Fossil

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Changes In Branch trunk Through [8f798279] Excluding Merge-Ins

This is equivalent to a diff from c06edd23 to 8f798279

2024-11-06
13:21
Increase the version number to 2.26 in order to start the next release cycle. Update the built-in SQLite to the latest 3.48.0 pre-release for testing. Add the 2_26 tag to the change log. ... (check-in: 66899f89 user: drh tags: trunk)
12:59
Version 2.25 ... (check-in: 8f798279 user: drh tags: trunk, release, version-2.25)
12:44
Mention the SQLite and OpenSSL versions in the change log for 2.25. ... (check-in: 5c8b6781 user: drh tags: trunk)
2010-05-16
19:16
Rename the "clear-title" branch as the new trunk. The trunk is now relicensed using the Simplified BSD License. ... (check-in: bf1c21ba user: drh tags: trunk)
19:08
Change from GPL to the Simplified BSD License. ... (Closed-Leaf check-in: c06edd23 user: drh tags: clear-title)
11:18
Pull the latest trunk changes into clear-title. ... (check-in: 96722b6d user: drh tags: clear-title)

Added .editorconfig.














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# EditorConfig (https://editorconfig.com) Configuration for Fossil
#
# Following https://fossil-scm.org/fossil/doc/trunk/www/style.wiki
#

# Defaults for all files
[*]
end_of_line = lf
insert_final_newline = true
indent_style = space
indent_size = 2

[{Makefile,Makefile.*,*.mk}]
indent_style = tab
Added .fossil-settings/binary-glob.













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*.gif
*.ico
*.jpg
*.odp
*.dia
*.pdf
*.png
*.wav
compat/zlib/contrib/blast/test.pk
compat/zlib/contrib/dotzlib/DotZLib.chm
compat/zlib/contrib/puff/zeros.raw
compat/zlib/zlib.3.pdf
extsrc/pikchr.wasm
Added .fossil-settings/clean-glob.




















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*.a
*.lib
*.manifest
*.o
*.obj
*.pdb
*.res
Makefile
autosetup/jimsh0
autosetup/jimsh0.exe
bld/*
msvcbld/*
wbld/*
win/*.c
win/*.h
win/*.exe
win/headers
win/linkopts
autoconfig.h
config.log
Added .fossil-settings/crlf-glob.





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compat/zlib/*
setup/fossil.iss
test/th1-docs-input.txt
test/th1-hooks-input.txt
win/buildmsvc.bat
Added .fossil-settings/encoding-glob.




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compat/zlib/contrib/dotzlib/DotZLib/*.cs
test/utf16be.txt
test/utf16le.txt
win/fossil.rc
Added .fossil-settings/ignore-glob.









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compat/openssl*
compat/tcl*
compat/zlib/contrib/ada/*
compat/zlib/doc/*
fossil
fossil.exe
win/fossil.exe
*shell-see.*
*sqlite3-see.*
Added .project.











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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
	<name>fossil</name>
	<comment></comment>
	<projects>
	</projects>
	<buildSpec>
	</buildSpec>
	<natures>
	</natures>
</projectDescription>
Added .settings/org.eclipse.core.resources.prefs.


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eclipse.preferences.version=1
encoding/<project>=UTF-8
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eclipse.preferences.version=1
line.separator=\n
Changes to BUILD.txt.
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All of the source code for fossil is contained in the src/ subdirectory.
But there is a lot of generated code, so you will probably want to
use the Makefile.  To do a complete build, just type:
To do a complete build, just type:

   make
   ./configure; make

The ./configure script builds Makefile from Makefile.in based on
your system and any options you select (run "./configure --help"
for a listing of the available options.)
That should work out-of-the-box on Macs and Linux systems. If you are
building on a Windows box, install MinGW as well as MinGW's make (or
MSYS). You can then type:

If you wish to use the original Makefile with no configuration, you can
instead use:

   make -f Makefile.classic

On a windows box, use one of the Makefiles in the win/ subdirectory,
according to your compiler and environment.  If you have MinGW or
MinGW-w64 installed on your system (Msys or Cygwin, or as
cross-compile environment on Linux or Darwin), then consider:

   make -f win/Makefile.mingw

If you have VC++ installed on your system, then consider:

   make -f Makefile.w32
   cd win; nmake /f Makefile.msc

If you have trouble, or you want to do something fancy, just look at
top level makefile. There are 6 configuration options that are all well
commented. Instead of editing the Makefile, consider copying the Makefile
to an alternative name such as "GNUMakefile", "BSDMakefile", or "makefile"
and editing the copy.
Makefile.classic. There are 6 configuration options that are all well
commented. Instead of editing the Makefile.classic, consider copying
Makefile.classic to an alternative name such as "GNUMakefile",
"BSDMakefile", or "makefile" and editing the copy.

Out of source builds?

--------------------------------------------------------------------------
BUILDING OUTSIDE THE SOURCE TREE

An out of source build is pretty easy:

  1. Make a new directory to do the builds in.
  2. Copy "Makefile" from the source into the build directory and
  modify the SRCDIR macro along the lines of:
  1. Make and change to a new directory to do the builds in.
  2. Run the "configure" script from this directory.
  3. Type: "make"

    SRCDIR=../src
For example:

  mkdir build
  cd build
  ../configure
  3. type: "make"
  make

This will now keep all generates files seperate from the maintained
This will now keep all generated files separate from the maintained
source code.

--------------------------------------------------------------------------

Here are some notes on what is happening behind the scenes:

* The configure script (if used) examines the options given
  and runs various tests with the C compiler to create Makefile
  from the Makefile.in template as well as autoconfig.h

* The Makefile just sets up a few macros and then invokes the
  real makefile in src/main.mk.  The src/main.mk makefile is
  automatically generated by a TCL script found at src/makemake.tcl.
  Do not edit src/main.mk directly.  Update src/makemake.tcl and
  automatically generated by a TCL script found at tools/makemake.tcl.
  Do not edit src/main.mk directly.  Update tools/makemake.tcl and
  then rerun it.

* The *.h header files are automatically generated using a program
  called "makeheaders".  Source code to the makeheaders program is
  found in src/makeheaders.c.  Documentation is found in 
  src/makeheaders.html.
  found in tools/makeheaders.c.  Documentation is found in
  tools/makeheaders.html.

* Most *.c source files are preprocessed using a program called
  "translate".  The sources to translate are found in src/translate.c.
  A header comment in src/translate.c explains in detail what it does.
  "translate".  The sources to translate are found in tools/translate.c.
  A header comment in tools/translate.c explains in detail what it does.

* The src/mkindex.c program generates some C code that implements
* The tools/mkindex.c program generates some C code that implements
  static lookup tables.  See the header comment in the source code
  for details on what it does.

Additional information on the build process is available from
http://fossil-scm.org/home/doc/trunk/www/makefile.wiki
Changes to COPYRIGHT-BSD2.txt.
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Copyright 2007 D. Richard Hipp. All rights reserved.

Redistribution and use in source and binary forms, with or 
without modification, are permitted provided that the 
Redistribution and use in source and binary forms, with or
without modification, are permitted provided that the
following conditions are met:

   1. Redistributions of source code must retain the above
      copyright notice, this list of conditions and the 
      copyright notice, this list of conditions and the
      following disclaimer.

   2. Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the
      following disclaimer in the documentation and/or other
      materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS 
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE 
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation 
are those of the authors and contributors and should not be interpreted 
The views and conclusions contained in the software and documentation
are those of the authors and contributors and should not be interpreted
as representing official policies, either expressed or implied, of anybody
else.
Added Dockerfile.



























































































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# syntax=docker/dockerfile:1.3
# See www/containers.md for documentation on how to use this file.

## ---------------------------------------------------------------------
## STAGE 1: Build static Fossil binary
## ---------------------------------------------------------------------

### We aren't pinning to a more stable version of Alpine because we want
### to build with the latest tools and libraries available in case they
### fixed something that matters to us since the last build.  Everything
### below depends on this layer, and so, alas, we toss this container's
### cache on Alpine's release schedule, roughly once a month.
FROM alpine:latest AS bld
WORKDIR /fsl

### Bake the basic Alpine Linux into a base layer so it only changes
### when the upstream image is updated or we change the package set.
RUN set -x                                                             \
    && apk update                                                      \
    && apk upgrade --no-cache                                          \
    && apk add --no-cache                                              \
         gcc make                                                      \
         linux-headers musl-dev                                        \
         openssl-dev openssl-libs-static                               \
         zlib-dev zlib-static

### Build Fossil as a separate layer so we don't have to rebuild the
### Alpine environment for each iteration of Fossil's dev cycle.
###
### We must cope with a bizarre ADD misfeature here: it unpacks tarballs
### automatically when you give it a local file name but not if you give
### it a /tarball URL!  It matters because we default to a URL in case
### you're building outside a Fossil checkout, but when building via the
### container-image target, we avoid a costly hit on fossil-scm.org
### by leveraging its DVCS nature via the "tarball" command and passing
### the resulting file's name in.
ARG FSLCFG=""
ARG FSLVER="trunk"
ARG FSLURL="https://fossil-scm.org/home/tarball/src?r=${FSLVER}"
ENV FSLSTB=/fsl/src.tar.gz
ADD $FSLURL $FSLSTB
RUN set -x                                                             \
    && if [ -d $FSLSTB ] ;                                             \
       then mv $FSLSTB/src . ;                                         \
       else tar -xf src.tar.gz ; fi                                    \
    && src/configure --static CFLAGS='-Os -s' $FSLCFG && make -j16


## ---------------------------------------------------------------------
## STAGE 2: Pare that back to the bare essentials.
## ---------------------------------------------------------------------

FROM busybox AS os
ARG UID=499

### Set up that base OS for our specific use without tying it to
### anything likely to change often.  So long as the user leaves
### UID alone, this layer will be durable.
RUN set -x                                                             \
    && mkdir e log museum                                              \
    && echo "root:x:0:0:Admin:/:/false"                   > /e/passwd  \
    && echo "root:x:0:root"                               > /e/group   \
    && echo "fossil:x:${UID}:${UID}:User:/museum:/false" >> /e/passwd  \
    && echo "fossil:x:${UID}:fossil"                     >> /e/group


## ---------------------------------------------------------------------
## STAGE 3: Drop BusyBox, too, now that we're done with its /bin/sh &c
## ---------------------------------------------------------------------

FROM scratch AS run
COPY --from=bld --chmod=755           /fsl/fossil /bin/
COPY --from=os  --chmod=600           /e/*        /etc/
COPY --from=os  --chmod=1777          /tmp        /tmp/
COPY --from=os  --chown=fossil:fossil /log        /log/
COPY --from=os  --chown=fossil:fossil /museum     /museum/


## ---------------------------------------------------------------------
## RUN!
## ---------------------------------------------------------------------

ENV PATH "/bin"
EXPOSE 8080/tcp
USER fossil
ENTRYPOINT [ "fossil", "server" ]
CMD [                       \
    "--create",             \
    "--jsmode", "bundled",  \
    "--user",   "admin",    \
    "museum/repo.fossil" ]
Deleted Makefile.
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#!/usr/bin/make
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src

#### The directory into which object code files should be written.
#
#
OBJDIR = ./obj

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = gcc -g -O2

#### The suffix to add to executable files.  ".exe" for windows.
#    Nothing for unix.
#
E =

#### C Compile and options for use in building executables that 
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
#TCC = gcc -O6
#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage
TCC = gcc -g -Os -Wall

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other dependencies.  We sometimes add the -static option here
#    so that we can build a static executable that will run in a
#    chroot jail.
#
LIB = -lz $(LDFLAGS)
# If you're on OpenSolaris:
# LIB += lsocket
# Solaris 10 needs:
# LIB += -lsocket -lnsl
# My assumption is that the Sol10 flags will work for Sol8/9 and possibly 11.
# 

#### Tcl shell for use in running the fossil testsuite.
#
TCLSH = tclsh

# You should not need to change anything below this line
###############################################################################
include $(SRCDIR)/main.mk
Added Makefile.classic.















































































































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#!/usr/bin/make
#
# This is the top-level makefile for Fossil when the build is occurring
# on a unix platform.  This works out-of-the-box on most unix platforms.
# But you are free to vary some of the definitions if desired.
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src
#### Upstream source files included directly in this repository.
#
SRCDIR_extsrc = ./extsrc
#### In-tree tools such as code generators and translators:
#
SRCDIR_tools = ./tools

#### The directory into which object code files should be written.
#
#
OBJDIR = ./bld

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = gcc
BCCFLAGS = $(CFLAGS)

#### The suffix to add to final executable file.  When cross-compiling
#    to windows, make this ".exe".  Otherwise leave it blank.
#
E =

#### C Compile and options for use in building executables that
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
#TCC = gcc -O6
#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage
TCC = gcc -g -Os -Wall

# To add support for HTTPS
TCC += -DFOSSIL_ENABLE_SSL

#### We sometimes add the -static option here so that we can build a
#    static executable that will run in a chroot jail.
#LIB = -static
TCC += -DFOSSIL_DYNAMIC_BUILD=1

TCCFLAGS = $(CFLAGS)

# We don't attempt to use libedit or libreadline in this simplified
# build system (contrast auto.def and Makefile.in) so use the included
# copy of linenoise.  MinGW can't make use of this, but linenoise is
# ifdef'd out elsewhere for that platform.  Note that this is a make
# flag handled in src/main.mk, not a C preprocessor flag.
USE_LINENOISE := 1

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other required dependencies.
ZLIB_LIB = -lz

# If using zlib:
LIB += $(ZLIB_LIB) $(LDFLAGS)

# If using HTTPS:
LIB += -lcrypto -lssl

# Many platforms put cos() needed by src/piechart.c in libm, rather than
# in libc.  We cannot enable this by default because libm doesn't exist
# everywhere.
#LIB += -lm

#### Tcl shell for use in running the fossil testsuite.  If you do not
#    care about testing the end result, this can be blank.
#
TCLSH = tclsh

CFLAGS += -fPIE
CPPFLAGS += -I. -I$(SRCDIR_extsrc) -I$(SRCDIR)
LIB = -lm -lz -lssl
INSTALLDIR = $(DESTDIR)$(prefix)/bin
SQLITE3_ORIGINAL = 0
USE_LINENOISE = 1


# You should not need to change anything below this line
###############################################################################
#
# Automatic platform-specific options.
HOST_OS_CMD = uname -s
HOST_OS = $(HOST_OS_CMD:sh)

LIB.SunOS= -lsocket -lnsl
LIB += $(LIB.$(HOST_OS))

TCC.DragonFly += -DUSE_PREAD
TCC.FreeBSD += -DUSE_PREAD
TCC.NetBSD += -DUSE_PREAD
TCC.OpenBSD += -DUSE_PREAD
TCC += $(TCC.$(HOST_OS))

APPNAME = fossil$(E)
.PHONY: all tags
include $(SRCDIR)/main.mk
Added Makefile.in.
















































































































































































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#!/usr/bin/make
#
# This is the top-level makefile for Fossil when the build is occurring
# on a unix platform.  This works out-of-the-box on most unix platforms.
# But you are free to vary some of the definitions if desired.
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = @srcdir@/src
TOPDIR = @srcdir@
#### Upstream source files included directly in this repository.
#
SRCDIR_extsrc = @srcdir@/extsrc
#### In-tree tools such as code generators and translators:
#
SRCDIR_tools = @srcdir@/tools

#### The directory into which object code files should be written.
#    Having a "./" prefix in the value of this variable breaks our use of the
#    "makeheaders" tool when running make on the MinGW platform, apparently
#    due to some command line argument manipulation performed automatically
#    by the shell.
#
#
OBJDIR = bld

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = @CC_FOR_BUILD@

#### The suffix to add to final executable file.  When cross-compiling
#    to windows, make this ".exe".  Otherwise leave it blank.
#
E = @EXEEXT@

TCC = @CC@

#### Tcl shell for use in running the fossil testsuite.  If you do not
#    care about testing the end result, this can be blank.
#
TCLSH = @TCLSH@

CFLAGS = @CFLAGS@
CFLAGS_INCLUDE = @CFLAGS_INCLUDE@
LIB =	@LDFLAGS@ @EXTRA_LDFLAGS@ @LIBS@
BCCFLAGS =	@CPPFLAGS@ $(CFLAGS)
TCCFLAGS =	@EXTRA_CFLAGS@ @CPPFLAGS@ $(CFLAGS) -DHAVE_AUTOCONFIG_H
#
# Fuzzing may be enable by appending -fsanitize=fuzzer -DFOSSIL_FUZZ
# to the TCCFLAGS variable.
# For more thorough (but also slower) investigation
#      -fsanitize=fuzzer,undefined,address
# might be more useful.

INSTALLDIR = $(DESTDIR)@prefix@/bin
USE_SYSTEM_SQLITE = @USE_SYSTEM_SQLITE@
SQLITE3_SRC.2 = @SQLITE3_SRC.2@
SQLITE3_OBJ.2 = @SQLITE3_OBJ.2@
SQLITE3_SHELL_SRC.2 = @SQLITE3_SHELL_SRC.2@
SQLITE3_ORIGIN = @SQLITE3_ORIGIN@
# SQLITE3_ORIGIN changes...
#  SQLITE3_SRC:
#   0=src/sqlite3.c, 1=src/sqlite3-see.c, 2=$(SQLITE3_SRC.2)
#  SQLITE3_SHELL_SRC:
#   0=src/shell.c, 1=src/shell-see.c, 2=$(SQLITE3_SHELL_SRC.2)
USE_LINENOISE = @USE_LINENOISE@
USE_MMAN_H = @USE_MMAN_H@
USE_SEE = @USE_SEE@
APPNAME = fossil
#
# APPNAME = fossil-fuzz
# may be more appropriate for fuzzing.

#### Emscripten stuff for optionally doing in-tree builds
# of any WASM components. We store precompiled WASM in the the SCM, so
# this is only useful for people who actively work on WASM
# components. EMSDK_ENV refers to the "environment" script which comes
# with the Emscripten SDK package:
# https://emscripten.org/docs/getting_started/downloads.html
EMSDK_HOME = @EMSDK_HOME@
EMSDK_ENV = @EMSDK_ENV@
EMCC_OPT = @EMCC_OPT@
EMCC_WRAPPER = $(SRCDIR_tools)/emcc.sh

# MAKE_COMPILATION_DB (yes/no) determines whether or not the
# compile_commands.json file will be generated.
MAKE_COMPILATION_DB = @MAKE_COMPILATION_DB@

.PHONY: all tags

include $(SRCDIR)/main.mk
SQLITE_OPTIONS += @SQLITE_OPTIONS_EXT@
SHELL_OPTIONS += @SQLITE_OPTIONS_EXT@
# ^^^ must come after main.mk is included

distclean: clean
	-rm -f autoconfig.h config.log Makefile
	-rm -f cscope.out tags

reconfig:
	@AUTOREMAKE@

tags:
	ctags -R @srcdir@/src
	@COLLECT_CSCOPE_DATA@

# Automatically reconfigure whenever an autosetup file or one of the
# make source files change.
#
# The "touch" is necessary to avoid a make loop due to a new upstream
# feature in autosetup (GH 0a71e3c3b7) which rewrites *.in outputs only
# if doing so will write different contents; otherwise, it leaves them
# alone so the mtime doesn't change.  This means that if you change one
# our depdendencies besides Makefile.in, we'll reconfigure but Makefile
# won't change, so this rule will remain out of date, so we'll reconfig
# but Makefile won't change, so we'll reconfig but... endlessly.
#
# This is also why we repeat the reconfig target's command here instead
# of delegating to it with "$(MAKE) reconfig": having children running
# around interfering makes this failure mode even worse.
Makefile: @srcdir@/Makefile.in $(SRCDIR)/main.mk @AUTODEPS@
	@AUTOREMAKE@
	touch @builddir@/Makefile

# Container stuff
SRCTB := src-@FOSSIL_CI_PFX@.tar.gz
IMGVER := fossil:@FOSSIL_CI_PFX@
CNTVER := fossil-@FOSSIL_CI_PFX@
CENGINE := docker
container:
	$(CENGINE) image inspect $(IMGVER) > /dev/null 2>&1 || \
		$(MAKE) container-image
	$(CENGINE) container inspect $(CNTVER) > /dev/null 2>&1 || \
		$(CENGINE) create \
			--name $(CNTVER) \
			--cap-drop AUDIT_WRITE \
			--cap-drop CHOWN \
			--cap-drop FSETID \
			--cap-drop KILL \
			--cap-drop MKNOD \
			--cap-drop NET_BIND_SERVICE \
			--cap-drop NET_RAW \
			--cap-drop SETFCAP \
			--cap-drop SETPCAP \
			--publish 8080:8080 \
			$(DCFLAGS) $(IMGVER) $(DCCMD)

container-clean:
	-$(CENGINE) container kill $(CNTVER)
	-$(CENGINE) container rm   $(CNTVER)
	-$(CENGINE) image     rm   $(IMGVER)

container-image:
	$(APPNAME) tarball --name src @FOSSIL_CI_PFX@ $(SRCTB)
	$(CENGINE) buildx build \
		--load \
		--tag $(IMGVER) \
		--build-arg FSLURL=$(SRCTB) \
		$(DBFLAGS) @srcdir@
	rm -f $(SRCTB)

container-run container-start: container
	$(CENGINE) start $(DSFLAGS) $(CNTVER)
	@sleep 1   # decrease likelihood of logging race condition
	$(CENGINE) container logs $(CNTVER)

container-stop:
	$(CENGINE) stop $(CNTVER)

container-version:
	@echo $(CNTVER)
Added Makefile.osx-jaguar.







































































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#!/usr/bin/make
#
# This is a specially modified version of the Makefile that will build
# Fossil on Mac OSX Jaguar (10.2) circa 2002.  This Makefile is used for
# testing on an old PPC iBook.  The use of this old platform helps to verify
# Fossil and SQLite running on big-endian hardware.
#
# To build with this Makefile, run:
#
#     make -f Makefile.osx-jaguar
#
#
# This is the top-level makefile for Fossil when the build is occurring
# on a unix platform.  This works out-of-the-box on most unix platforms.
# But you are free to vary some of the definitions if desired.
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src

#### The directory into which object code files should be written.
#    Having a "./" prefix in the value of this variable breaks our use of the
#    "makeheaders" tool when running make on the MinGW platform, apparently
#    due to some command line argument manipulation performed automatically
#    by the shell.
#
#
OBJDIR = bld

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = cc
BCCFLAGS = $(CFLAGS)

#### The suffix to add to final executable file.  When cross-compiling
#    to windows, make this ".exe".  Otherwise leave it blank.
#
E =

TCC = cc
TCCFLAGS = $(CFLAGS)

#### Tcl shell for use in running the fossil testsuite.  If you do not
#    care about testing the end result, this can be blank.
#
TCLSH = tclsh

# LIB =	  -lz
LIB = compat/zlib/libz.a
TCC +=	  -g -O0 -DHAVE_AUTOCONFIG_H
TCC += -Icompat/zlib
TCC += -DSQLITE_WITHOUT_ZONEMALLOC
TCC += -D_BSD_SOURCE=1
TCC += -DWITHOUT_ICONV
TCC += -Dsocklen_t=int
TCC += -DSQLITE_MAX_MMAP_SIZE=0
INSTALLDIR = $(DESTDIR)/usr/local/bin
USE_SYSTEM_SQLITE =
USE_LINENOISE = 1
# FOSSIL_ENABLE_TCL = @FOSSIL_ENABLE_TCL@
FOSSIL_ENABLE_TCL = 0

include $(SRCDIR)/main.mk

distclean: clean
	rm -f autoconfig.h config.log Makefile
Deleted Makefile.w32.
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#!/usr/bin/make
#
#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = ./src
OBJDIR = ./wobj

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = gcc -g -O2

#### The suffix to add to executable files.  ".exe" for windows.
#    Nothing for unix.
#
E = .exe

#### Enable HTTPS support via OpenSSL (links to libssl and libcrypto)
#
# FOSSIL_ENABLE_SSL=1

#### C Compile and options for use in building executables that 
#    will run on the target platform.  This is usually the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
#TCC = gcc -O6
#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage
#TCC = gcc -g -Os -Wall
#TCC = gcc -g -Os -Wall -DFOSSIL_I18N=0 -L/usr/local/lib -I/usr/local/include
TCC = gcc -Os -Wall -DFOSSIL_I18N=0 -L/mingw/lib -I/mingw/include

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -DFOSSIL_ENABLE_SSL=1
endif

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other dependencies.  We sometimes add the -static option here
#    so that we can build a static executable that will run in a
#    chroot jail.
#
#LIB = -lz
#LIB = -lz -lws2_32
LIB = -lmingwex -lz -lws2_32
# OpenSSL:
ifdef FOSSIL_ENABLE_SSL
LIB += -lcrypto -lssl
endif

#### Tcl shell for use in running the fossil testsuite.
#
TCLSH = tclsh

#### Include a configuration file that can override any one of these settings.
#
-include config.w32

# You should not need to change anything below this line
###############################################################################
include $(SRCDIR)/main.mk
Added README.md.















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# About Fossil

Fossil is a distributed version control system that has been widely
used since 2007.  Fossil was originally designed to support the
[SQLite](https://sqlite.org) project but has been adopted by many other
projects as well.

Fossil is self-hosting at <https://fossil-scm.org>.

If you are reading this on GitHub, then you are looking at a Git mirror
of the self-hosting Fossil repository.  The purpose of that mirror is to
test and exercise Fossil's ability to export a Git mirror.  Nobody much
uses the GitHub mirror, except to verify that the mirror logic works.  If
you want to know more about Fossil, visit the official self-hosting site
linked above.
Added VERSION.

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2.25
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Deleted art/CollRev2.dia.
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        <dia:attribute name="text">
          <dia:composite type="text">
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Deleted art/CollRev3.dia.
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Deleted art/CollRev4.dia.
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Deleted art/branching.odp.

cannot compute difference between binary files

Deleted art/concept1.dia.

cannot compute difference between binary files

Deleted art/concept2.dia.

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Deleted art/delta1.dia.
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Deleted art/delta2.dia.
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<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
  <dia:diagramdata>
    <dia:attribute name="background">
      <dia:color val="#ffffff"/>
    </dia:attribute>
    <dia:attribute name="pagebreak">
      <dia:color val="#000099"/>
    </dia:attribute>
    <dia:attribute name="paper">
      <dia:composite type="paper">
        <dia:attribute name="name">
          <dia:string>#Letter#</dia:string>
        </dia:attribute>
        <dia:attribute name="tmargin">
          <dia:real val="2.5399999618530273"/>
        </dia:attribute>
        <dia:attribute name="bmargin">
          <dia:real val="2.5399999618530273"/>
        </dia:attribute>
        <dia:attribute name="lmargin">
          <dia:real val="2.5399999618530273"/>
        </dia:attribute>
        <dia:attribute name="rmargin">
          <dia:real val="2.5399999618530273"/>
        </dia:attribute>
        <dia:attribute name="is_portrait">
          <dia:boolean val="true"/>
        </dia:attribute>
        <dia:attribute name="scaling">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="fitto">
          <dia:boolean val="false"/>
        </dia:attribute>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="grid">
      <dia:composite type="grid">
        <dia:attribute name="width_x">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="width_y">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_x">
          <dia:int val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_y">
          <dia:int val="1"/>
        </dia:attribute>
        <dia:composite type="color"/>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="color">
      <dia:color val="#d8e5e5"/>
    </dia:attribute>
    <dia:attribute name="guides">
      <dia:composite type="guides">
        <dia:attribute name="hguides"/>
        <dia:attribute name="vguides"/>
      </dia:composite>
    </dia:attribute>
  </dia:diagramdata>
  <dia:layer name="Background" visible="true">
    <dia:group>
      <dia:group>
        <dia:object type="Standard - Box" version="0" id="O0">
          <dia:attribute name="obj_pos">
            <dia:point val="4,7"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="3.95,6.95;9.05,9.05"/>
          </dia:attribute>
          <dia:attribute name="elem_corner">
            <dia:point val="4,7"/>
          </dia:attribute>
          <dia:attribute name="elem_width">
            <dia:real val="5"/>
          </dia:attribute>
          <dia:attribute name="elem_height">
            <dia:real val="2"/>
          </dia:attribute>
          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
          </dia:attribute>
        </dia:object>
        <dia:object type="Standard - Text" version="1" id="O1">
          <dia:attribute name="obj_pos">
            <dia:point val="4.73538,8.06397"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="4.73538,7.52147;8.24757,8.46147"/>
          </dia:attribute>
          <dia:attribute name="text">
            <dia:composite type="text">
              <dia:attribute name="string">
                <dia:string>#Copy Range#</dia:string>
              </dia:attribute>
              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
              </dia:attribute>
              <dia:attribute name="height">
                <dia:real val="0.80000000000000004"/>
              </dia:attribute>
              <dia:attribute name="pos">
                <dia:point val="4.73538,8.06397"/>
              </dia:attribute>
              <dia:attribute name="color">
                <dia:color val="#000000"/>
              </dia:attribute>
              <dia:attribute name="alignment">
                <dia:enum val="0"/>
              </dia:attribute>
            </dia:composite>
          </dia:attribute>
          <dia:attribute name="valign">
            <dia:enum val="3"/>
          </dia:attribute>
        </dia:object>
      </dia:group>
      <dia:group>
        <dia:object type="Standard - Box" version="0" id="O2">
          <dia:attribute name="obj_pos">
            <dia:point val="4,4"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="3.95,3.95;9.05,6.05"/>
          </dia:attribute>
          <dia:attribute name="elem_corner">
            <dia:point val="4,4"/>
          </dia:attribute>
          <dia:attribute name="elem_width">
            <dia:real val="5"/>
          </dia:attribute>
          <dia:attribute name="elem_height">
            <dia:real val="2"/>
          </dia:attribute>
          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
          </dia:attribute>
        </dia:object>
        <dia:object type="Standard - Text" version="1" id="O3">
          <dia:attribute name="obj_pos">
            <dia:point val="4.64772,5.06397"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="4.64772,4.52147;8.33522,5.46147"/>
          </dia:attribute>
          <dia:attribute name="text">
            <dia:composite type="text">
              <dia:attribute name="string">
                <dia:string>#Insert Literal#</dia:string>
              </dia:attribute>
              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
              </dia:attribute>
              <dia:attribute name="height">
                <dia:real val="0.80000000000000004"/>
              </dia:attribute>
              <dia:attribute name="pos">
                <dia:point val="4.64772,5.06397"/>
              </dia:attribute>
              <dia:attribute name="color">
                <dia:color val="#000000"/>
              </dia:attribute>
              <dia:attribute name="alignment">
                <dia:enum val="0"/>
              </dia:attribute>
            </dia:composite>
          </dia:attribute>
          <dia:attribute name="valign">
            <dia:enum val="3"/>
          </dia:attribute>
        </dia:object>
      </dia:group>
      <dia:object type="Standard - ZigZagLine" version="1" id="O4">
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        </dia:attribute>
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        </dia:attribute>
        <dia:attribute name="orth_points">
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          <dia:point val="2.5,5"/>
          <dia:point val="4,5"/>
        </dia:attribute>
        <dia:attribute name="orth_orient">
          <dia:enum val="1"/>
          <dia:enum val="0"/>
        </dia:attribute>
        <dia:attribute name="autorouting">
          <dia:boolean val="true"/>
        </dia:attribute>
        <dia:attribute name="end_arrow">
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        </dia:attribute>
        <dia:attribute name="end_arrow_length">
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        </dia:attribute>
        <dia:attribute name="end_arrow_width">
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        </dia:attribute>
      </dia:object>
      <dia:object type="Standard - ZigZagLine" version="1" id="O5">
        <dia:attribute name="obj_pos">
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        </dia:attribute>
        <dia:attribute name="obj_bb">
          <dia:rectangle val="2.45,2.95;4.05,8.5"/>
        </dia:attribute>
        <dia:attribute name="orth_points">
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          <dia:point val="2.5,8"/>
          <dia:point val="4,8"/>
        </dia:attribute>
        <dia:attribute name="orth_orient">
          <dia:enum val="1"/>
          <dia:enum val="0"/>
        </dia:attribute>
        <dia:attribute name="autorouting">
          <dia:boolean val="true"/>
        </dia:attribute>
        <dia:attribute name="end_arrow">
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        <dia:attribute name="end_arrow_length">
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        </dia:attribute>
        <dia:attribute name="end_arrow_width">
          <dia:real val="0.5"/>
        </dia:attribute>
      </dia:object>
      <dia:group>
        <dia:object type="Standard - Box" version="0" id="O6">
          <dia:attribute name="obj_pos">
            <dia:point val="1,1"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
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          </dia:attribute>
          <dia:attribute name="elem_corner">
            <dia:point val="1,1"/>
          </dia:attribute>
          <dia:attribute name="elem_width">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="elem_height">
            <dia:real val="2"/>
          </dia:attribute>
          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
          </dia:attribute>
        </dia:object>
        <dia:object type="Standard - Box" version="0" id="O7">
          <dia:attribute name="obj_pos">
            <dia:point val="2,1"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="1.95,0.95;3.05,3.05"/>
          </dia:attribute>
          <dia:attribute name="elem_corner">
            <dia:point val="2,1"/>
          </dia:attribute>
          <dia:attribute name="elem_width">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="elem_height">
            <dia:real val="2"/>
          </dia:attribute>
          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
          </dia:attribute>
        </dia:object>
        <dia:object type="Standard - Box" version="0" id="O8">
          <dia:attribute name="obj_pos">
            <dia:point val="3,1"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="2.95,0.95;4.05,3.05"/>
          </dia:attribute>
          <dia:attribute name="elem_corner">
            <dia:point val="3,1"/>
          </dia:attribute>
          <dia:attribute name="elem_width">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="elem_height">
            <dia:real val="2"/>
          </dia:attribute>
          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
          </dia:attribute>
        </dia:object>
        <dia:object type="Standard - Box" version="0" id="O9">
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          <dia:attribute name="obj_bb">
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          </dia:attribute>
          <dia:attribute name="elem_corner">
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          </dia:attribute>
          <dia:attribute name="elem_width">
            <dia:real val="1"/>
          </dia:attribute>
          <dia:attribute name="elem_height">
            <dia:real val="2"/>
          </dia:attribute>
          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
          </dia:attribute>
        </dia:object>
        <dia:object type="Standard - Text" version="1" id="O10">
          <dia:attribute name="obj_pos">
            <dia:point val="5,2.06397"/>
          </dia:attribute>
          <dia:attribute name="obj_bb">
            <dia:rectangle val="5,1.52147;5.8775,2.46147"/>
          </dia:attribute>
          <dia:attribute name="text">
            <dia:composite type="text">
              <dia:attribute name="string">
                <dia:string>#***#</dia:string>
              </dia:attribute>
              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
              </dia:attribute>
              <dia:attribute name="height">
                <dia:real val="0.80000000000000004"/>
              </dia:attribute>
              <dia:attribute name="pos">
                <dia:point val="5,2.06397"/>
              </dia:attribute>
              <dia:attribute name="color">
                <dia:color val="#000000"/>
              </dia:attribute>
              <dia:attribute name="alignment">
                <dia:enum val="0"/>
              </dia:attribute>
            </dia:composite>
          </dia:attribute>
          <dia:attribute name="valign">
            <dia:enum val="3"/>
          </dia:attribute>
        </dia:object>
      </dia:group>
    </dia:group>
  </dia:layer>
</dia:diagram>
Deleted art/delta3.dia.
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<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
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        <dia:attribute name="bmargin">
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        <dia:attribute name="lmargin">
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        <dia:attribute name="is_portrait">
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        <dia:attribute name="scaling">
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        <dia:attribute name="fitto">
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    </dia:attribute>
    <dia:attribute name="grid">
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        <dia:composite type="color"/>
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    <dia:attribute name="guides">
      <dia:composite type="guides">
        <dia:attribute name="hguides"/>
        <dia:attribute name="vguides"/>
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  </dia:diagramdata>
  <dia:layer name="Background" visible="true">
    <dia:group>
      <dia:group>
        <dia:object type="Standard - Box" version="0" id="O0">
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          </dia:attribute>
          <dia:attribute name="text">
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        <dia:object type="Standard - Text" version="1" id="O7">
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="11.64,1.52147;12.36,2.46147"/>
          </dia:attribute>
          <dia:attribute name="text">
            <dia:composite type="text">
              <dia:attribute name="string">
                <dia:string>#","#</dia:string>
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              <dia:attribute name="height">
                <dia:real val="0.80000000000000004"/>
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              <dia:attribute name="pos">
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        </dia:object>
      </dia:group>
    </dia:group>
  </dia:layer>
</dia:diagram>
Deleted art/delta4.dia.
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<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
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    <dia:attribute name="background">
      <dia:color val="#ffffff"/>
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    </dia:attribute>
    <dia:attribute name="paper">
      <dia:composite type="paper">
        <dia:attribute name="name">
          <dia:string>#Letter#</dia:string>
        </dia:attribute>
        <dia:attribute name="tmargin">
          <dia:real val="2.5399999618530273"/>
        </dia:attribute>
        <dia:attribute name="bmargin">
          <dia:real val="2.5399999618530273"/>
        </dia:attribute>
        <dia:attribute name="lmargin">
          <dia:real val="2.5399999618530273"/>
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        <dia:attribute name="rmargin">
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        </dia:attribute>
        <dia:attribute name="is_portrait">
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        <dia:attribute name="scaling">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="fitto">
          <dia:boolean val="false"/>
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      </dia:composite>
    </dia:attribute>
    <dia:attribute name="grid">
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        <dia:attribute name="width_x">
          <dia:real val="1"/>
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        <dia:attribute name="width_y">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_x">
          <dia:int val="1"/>
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        <dia:attribute name="visible_y">
          <dia:int val="1"/>
        </dia:attribute>
        <dia:composite type="color"/>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="color">
      <dia:color val="#d8e5e5"/>
    </dia:attribute>
    <dia:attribute name="guides">
      <dia:composite type="guides">
        <dia:attribute name="hguides"/>
        <dia:attribute name="vguides"/>
      </dia:composite>
    </dia:attribute>
  </dia:diagramdata>
  <dia:layer name="Background" visible="true">
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      <dia:group>
        <dia:object type="Standard - Box" version="0" id="O0">
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            <dia:rectangle val="0.95,0.95;5.05,3.05"/>
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          <dia:attribute name="elem_corner">
            <dia:point val="1,1"/>
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          <dia:attribute name="elem_width">
            <dia:real val="4"/>
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          <dia:attribute name="elem_height">
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          <dia:attribute name="show_background">
            <dia:boolean val="true"/>
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        </dia:object>
        <dia:object type="Standard - Text" version="1" id="O1">
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          <dia:attribute name="text">
            <dia:composite type="text">
              <dia:attribute name="string">
                <dia:string>#Length#</dia:string>
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              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
              </dia:attribute>
              <dia:attribute name="height">
                <dia:real val="0.80000000000000004"/>
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                <dia:point val="1.98659,2.0725"/>
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              <dia:attribute name="color">
                <dia:color val="#000000"/>
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              <dia:attribute name="alignment">
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            </dia:composite>
          </dia:attribute>
          <dia:attribute name="valign">
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        </dia:object>
      </dia:group>
      <dia:group>
        <dia:object type="Standard - Box" version="0" id="O2">
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="6.95,0.95;11.05,3.05"/>
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          </dia:attribute>
          <dia:attribute name="text">
            <dia:composite type="text">
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          <dia:attribute name="valign">
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        <dia:object type="Standard - Text" version="1" id="O5">
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              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
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              <dia:attribute name="height">
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              <dia:attribute name="pos">
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              <dia:attribute name="color">
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              <dia:attribute name="alignment">
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          <dia:attribute name="valign">
            <dia:enum val="3"/>
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        </dia:object>
      </dia:group>
    </dia:group>
  </dia:layer>
</dia:diagram>
Deleted art/delta5.dia.
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<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
  <dia:diagramdata>
    <dia:attribute name="background">
      <dia:color val="#ffffff"/>
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    <dia:attribute name="pagebreak">
      <dia:color val="#000099"/>
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    <dia:attribute name="paper">
      <dia:composite type="paper">
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          <dia:string>#Letter#</dia:string>
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        <dia:attribute name="tmargin">
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        <dia:attribute name="bmargin">
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        </dia:attribute>
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  </dia:layer>
</dia:diagram>
Deleted art/delta6.dia.
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<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
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          <dia:attribute name="show_background">
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          <dia:attribute name="text">
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          <dia:attribute name="valign">
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      <dia:group>
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          <dia:attribute name="show_background">
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    </dia:group>
  </dia:layer>
</dia:diagram>
Deleted art/encode1.tex.
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\LARGE A = (\sum_{i=0}^{NHASH-1} z_i) \bmod 2^{16}

Deleted art/encode10.dia.
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<?xml version="1.0" encoding="UTF-8"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
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    <dia:attribute name="paper">
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        <dia:composite type="color"/>
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    </dia:attribute>
    <dia:attribute name="color">
      <dia:color val="#d8e5e5"/>
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    <dia:attribute name="guides">
      <dia:composite type="guides">
        <dia:attribute name="hguides"/>
        <dia:attribute name="vguides"/>
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    </dia:attribute>
  </dia:diagramdata>
  <dia:layer name="Background" visible="true">
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      <dia:group>
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          <dia:attribute name="obj_bb">
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          <dia:attribute name="elem_corner">
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            <dia:attribute name="corner_radius">
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            <dia:attribute name="obj_bb">
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            </dia:attribute>
            <dia:attribute name="text">
              <dia:composite type="text">
                <dia:attribute name="string">
                  <dia:string>#Gap =&gt; Insert#</dia:string>
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                <dia:attribute name="font">
                  <dia:font family="sans" style="0" name="Helvetica"/>
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                <dia:attribute name="height">
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                <dia:attribute name="alignment">
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            <dia:attribute name="valign">
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            <dia:attribute name="elem_corner">
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            <dia:attribute name="border_width">
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            <dia:attribute name="inner_color">
              <dia:color val="#90ee90"/>
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            <dia:attribute name="show_background">
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            <dia:attribute name="corner_radius">
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          </dia:object>
          <dia:object type="Standard - Text" version="1" id="O4">
            <dia:attribute name="obj_pos">
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            <dia:attribute name="obj_bb">
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            <dia:attribute name="text">
              <dia:composite type="text">
                <dia:attribute name="string">
                  <dia:string>#Processed#</dia:string>
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                <dia:attribute name="font">
                  <dia:font family="sans" style="0" name="Helvetica"/>
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                <dia:attribute name="height">
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                <dia:attribute name="pos">
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            <dia:attribute name="inner_color">
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              <dia:real val="1.1754943508222875e-38"/>
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            <dia:attribute name="obj_bb">
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            <dia:attribute name="text">
              <dia:composite type="text">
                <dia:attribute name="string">
                  <dia:string>#Common =&gt; Copy#</dia:string>
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                <dia:attribute name="font">
                  <dia:font family="sans" style="0" name="Helvetica"/>
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                <dia:attribute name="height">
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            <dia:attribute name="inner_color">
              <dia:color val="#bfbfbf"/>
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            <dia:attribute name="show_background">
              <dia:boolean val="true"/>
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            <dia:attribute name="corner_radius">
              <dia:real val="1.1754943508222875e-38"/>
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          </dia:object>
          <dia:object type="Standard - Text" version="1" id="O8">
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              <dia:point val="4.95,11.9675"/>
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            <dia:attribute name="obj_bb">
              <dia:rectangle val="4.95,10.95;9.26848,12.71"/>
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            <dia:attribute name="text">
              <dia:composite type="text">
                <dia:attribute name="string">
                  <dia:string>#Window#</dia:string>
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                <dia:attribute name="font">
                  <dia:font family="sans" style="0" name="Helvetica"/>
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                <dia:attribute name="height">
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                <dia:attribute name="alignment">
                  <dia:enum val="0"/>
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              </dia:composite>
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            <dia:attribute name="valign">
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        </dia:group>
      </dia:group>
      <dia:group>
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            <dia:point val="18,2"/>
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="17.975,1.975;24.025,24.025"/>
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          <dia:attribute name="elem_corner">
            <dia:point val="18,2"/>
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          <dia:attribute name="elem_width">
            <dia:real val="6"/>
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        <dia:object type="Standard - Box" version="0" id="O10">
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            <dia:point val="18,5"/>
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="17.975,4.975;24.025,14.025"/>
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          <dia:attribute name="elem_corner">
            <dia:point val="18,5"/>
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          <dia:attribute name="elem_width">
            <dia:real val="6"/>
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          <dia:attribute name="elem_height">
            <dia:real val="9"/>
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          <dia:attribute name="border_width">
            <dia:real val="0.050000000000000003"/>
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          <dia:attribute name="inner_color">
            <dia:color val="#ffa500"/>
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            <dia:boolean val="true"/>
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          <dia:attribute name="corner_radius">
            <dia:real val="1.1754943508222875e-38"/>
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        <dia:object type="Standard - Text" version="1" id="O11">
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            <dia:point val="14,9"/>
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          <dia:attribute name="obj_bb">
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          <dia:attribute name="text">
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                <dia:string>#Signature#</dia:string>
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              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="11.95,9;18.05,13.05"/>
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            <dia:point val="12,13"/>
            <dia:point val="15,13"/>
            <dia:point val="15,9.5"/>
            <dia:point val="18,9.5"/>
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          <dia:attribute name="orth_orient">
            <dia:enum val="0"/>
            <dia:enum val="1"/>
            <dia:enum val="0"/>
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          <dia:attribute name="autorouting">
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          <dia:attribute name="end_arrow">
            <dia:enum val="22"/>
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          <dia:attribute name="end_arrow_length">
            <dia:real val="0.5"/>
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          <dia:attribute name="end_arrow_width">
            <dia:real val="0.5"/>
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        <dia:object type="Standard - Text" version="1" id="O13">
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            <dia:point val="2,8"/>
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="2,6.9825;4.6625,8.7425"/>
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          <dia:attribute name="text">
            <dia:composite type="text">
              <dia:attribute name="string">
                <dia:string>#Base#</dia:string>
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              <dia:attribute name="font">
                <dia:font family="sans" style="0" name="Helvetica"/>
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            <dia:rectangle val="4.95,7.5;6.05,8.5"/>
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          <dia:attribute name="conn_endpoints">
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          <dia:attribute name="numcp">
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            <dia:point val="1,11"/>
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="1,9.9825;3.6725,11.7425"/>
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            <dia:composite type="text">
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                <dia:string>#Slide#</dia:string>
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                <dia:font family="sans" style="0" name="Helvetica"/>
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              <dia:attribute name="pos">
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              <dia:attribute name="color">
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          <dia:attribute name="valign">
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            <dia:point val="4,11"/>
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          <dia:attribute name="obj_bb">
            <dia:rectangle val="3.95,10.5;5.05,11.5"/>
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          <dia:attribute name="conn_endpoints">
            <dia:point val="4,11"/>
            <dia:point val="5,11"/>
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          <dia:attribute name="numcp">
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          <dia:attribute name="end_arrow_width">
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        <dia:attribute name="obj_bb">
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        <dia:attribute name="text">
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              <dia:string>#Target#</dia:string>
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            <dia:attribute name="font">
              <dia:font family="sans" style="0" name="Helvetica"/>
            </dia:attribute>
            <dia:attribute name="height">
              <dia:real val="1.5"/>
            </dia:attribute>
            <dia:attribute name="pos">
              <dia:point val="6,2"/>
            </dia:attribute>
            <dia:attribute name="color">
              <dia:color val="#000000"/>
            </dia:attribute>
            <dia:attribute name="alignment">
              <dia:enum val="0"/>
            </dia:attribute>
          </dia:composite>
        </dia:attribute>
        <dia:attribute name="valign">
          <dia:enum val="3"/>
        </dia:attribute>
      </dia:object>
      <dia:object type="Standard - Text" version="1" id="O18">
        <dia:attribute name="obj_pos">
          <dia:point val="18,2"/>
        </dia:attribute>
        <dia:attribute name="obj_bb">
          <dia:rectangle val="18,0.9825;21.3125,2.7425"/>
        </dia:attribute>
        <dia:attribute name="text">
          <dia:composite type="text">
            <dia:attribute name="string">
              <dia:string>#Origin#</dia:string>
            </dia:attribute>
            <dia:attribute name="font">
              <dia:font family="sans" style="0" name="Helvetica"/>
            </dia:attribute>
            <dia:attribute name="height">
              <dia:real val="1.5"/>
            </dia:attribute>
            <dia:attribute name="pos">
              <dia:point val="18,2"/>
            </dia:attribute>
            <dia:attribute name="color">
              <dia:color val="#000000"/>
            </dia:attribute>
            <dia:attribute name="alignment">
              <dia:enum val="0"/>
            </dia:attribute>
          </dia:composite>
        </dia:attribute>
        <dia:attribute name="valign">
          <dia:enum val="3"/>
        </dia:attribute>
      </dia:object>
    </dia:group>
  </dia:layer>
</dia:diagram>
Deleted art/encode2.tex.
1

-
\LARGE B = (\sum_{i=0}^{NHASH-1} (NHASH-i)z_i) \bmod 2^{16}
Deleted art/encode3.tex.
1

-
\LARGE V = 2^{16}B + A
Deleted art/encode4.tex.
1

-
\LARGE z_0
Deleted art/encode5.tex.
1

-
\LARGE z_{new}
Deleted art/encode6.tex.
1

-
\LARGE A_{new} = (A - z_0 + z_{new}) \bmod 2^{16}
Deleted art/encode7.tex.
1

-
\LARGE B_{new} = (B - z_0 NHASH + A_{new}) \bmod 2^{16}
Deleted art/encode8.tex.
1

-
\LARGE V_{new} = 2^{16}B_{new} + A_{new}
Deleted art/encode9.tex.
1

-
\LARGE A_{new}
Added auto.def.




























































































































































































































































































































































































































































































































































































































































































































































































































































































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# System autoconfiguration. Try: ./configure --help

# This must be above "options" below because it implicitly brings in the
# default Autosetup options, things like --prefix.
use cc cc-lib

options {
    with-openssl:path|auto|tree|none
                         => {Look for OpenSSL in the given path, automatically, in the source tree, or none}
    with-zlib:path|auto|tree
                         => {Look for zlib in the given path, automatically, or in the source tree}
    with-sqlite:path|auto|tree
                         => {Look for sqlite in the given path, automatically, or in the source tree.}
    with-exec-rel-paths=0
                         => {Enable relative paths for external diff/gdiff}
    with-sanitizer:      => {Build with C compiler's -fsanitize=LIST; e.g. address,enum,null,undefined}
    with-th1-docs=0      => {Enable TH1 for embedded documentation pages}
    with-th1-hooks=0     => {Enable TH1 hooks for commands and web pages}
    with-tcl:path        => {Enable Tcl integration, with Tcl in the specified path}
    with-tcl-stubs=0     => {Enable Tcl integration via stubs library mechanism}
    with-tcl-private-stubs=0
                         => {Enable Tcl integration via private stubs mechanism}
    with-mman=0          => {Enable use of POSIX memory APIs from "sys/mman.h"}
    with-see=0           => {Enable the SQLite Encryption Extension (SEE)}
    print-minimum-sqlite-version=0
                         => {print the minimum SQLite version number required, and exit}
    internal-sqlite=1    => {Don't use the internal SQLite, use the system one}
    static=0             => {Link a static executable}
    fusefs=1             => {Disable the Fuse Filesystem}
    fossil-debug=0       => {Build with fossil debugging enabled}
    no-opt=0             => {Build without optimization}
    json=0               => {Build with fossil JSON API enabled}
    with-emsdk:path      => {Directory containing the Emscripten SDK}
    compile-commands=0 =>
      "Check for compile_commands.json support."
}

# Update the minimum required SQLite version number here, and also
# in src/main.c near the sqlite3_libversion_number() call.  Take care
# that both places agree!
define MINIMUM_SQLITE_VERSION "3.46.0"

# This is useful for people wanting Fossil to use an external SQLite library
# to compare the one they have against the minimum required
if {[opt-bool print-minimum-sqlite-version]} {
    puts [get-define MINIMUM_SQLITE_VERSION]
    exit 0
}

set outOfTreeBuild 0
if {![file exists fossil.1]} {
  puts "This appears to be an out-of-tree build."
  set outOfTreeBuild 1
}

# sqlite wants these types if possible
cc-with {-includes {stdint.h inttypes.h}} {
    cc-check-types uint32_t uint16_t int16_t uint8_t
}

# Use pread/pwrite system calls in place of seek + read/write if possible
define USE_PREAD [cc-check-functions pread]

# If we have cscope here, we'll use it in the "tags" target
if {[cc-check-progs cscope]} {
    define COLLECT_CSCOPE_DATA "cscope -bR $::autosetup(srcdir)/src/*.\[ch\]"
} else {
    define COLLECT_CSCOPE_DATA ""
}

# Find tclsh for the test suite.
#
# We can't use jimsh for this: the test suite uses features of Tcl that
# Jim doesn't support, either statically or due to the way it's built by
# autosetup.  For example, Jim supports `file normalize`, but only if
# you build it with HAVE_REALPATH, which won't ever be defined in this
# context because autosetup doesn't try to discover platform-specific
# details like that before it decides to build jimsh0.  Besides which,
# autosetup won't build jimsh0 at all if it can find tclsh itself.
# Ironically, this means we may right now be running under either jimsh0
# or a version of tclsh that we find unsuitable below!
cc-check-progs tclsh
set hbtd /usr/local/Cellar/tcl-tk
if {[string equal false [get-define TCLSH]]} {
    msg-result "WARNING: 'make test' will not run here."
} else {
    set v [exec /bin/sh -c "echo 'puts \$tcl_version' | tclsh"]
    if {[expr {$v >= 8.6}]} {
        msg-result "Found Tclsh version $v in the PATH."
        define TCLSH tclsh
    } elseif {[file isdirectory $hbtd]} {
        # This is a macOS system with the Homebrew version of Tcl/Tk
        # installed.  Select the newest version.  It won't normally be
        # in the PATH to avoid shadowing /usr/bin/tclsh, and even if it
        # were in the PATH, it's bad practice to put /usr/local/bin (the
        # Homebrew default) ahead of /usr/bin, especially given that
        # it's user-writeable by default with Homebrew.  Thus, we can be
        # pretty sure the only way to call it is with an absolute path.
        set v [exec ls -tr $hbtd | tail -1]
        set path "$hbtd/$v/bin/tclsh"
        define TCLSH $path
        msg-result "Using Homebrew Tcl/Tk version $path."
    } else {
        msg-result "WARNING: tclsh $v found; need >= 8.6 for 'make test'."
        define TCLSH false     ;# force "make test" failure via /usr/bin/false
    }
}

define CFLAGS [get-env CFLAGS "-g -O2"]
define EXTRA_CFLAGS "-Wall"
define EXTRA_LDFLAGS ""
define USE_SYSTEM_SQLITE 0
define USE_LINENOISE 0
define USE_MMAN_H 0
define USE_SEE 0
define SQLITE3_ORIGIN 0
# SQLITE3_ORIGIN 0 = src/sqlite3, 1=src/sqlite3-see.c, 2=client-provided
define SQLITE_OPTIONS_EXT ""
# SQLITE_OPTIONS_EXT => build-dependent CFLAGS for sqlite3.c and shell.c

# Maintain the C89/C90-style order of variable declarations before statements.
# Check if the compiler supports the respective warning flag.
if {[cctest -cflags -Wdeclaration-after-statement]} {
    define-append EXTRA_CFLAGS -Wdeclaration-after-statement
}


# This procedure is a customized version of "cc-check-function-in-lib",
# that does not modify the LIBS variable.  Its use prevents prematurely
# pulling in libraries that will be added later anyhow (e.g. "-ldl").
proc check-function-in-lib {function libs {otherlibs {}}} {
    if {[string length $otherlibs]} {
        msg-checking "Checking for $function in $libs with $otherlibs..."
    } else {
        msg-checking "Checking for $function in $libs..."
    }
    set found 0
    cc-with [list -libs $otherlibs] {
        if {[cctest_function $function]} {
            msg-result "none needed"
            define lib_$function ""
            incr found
        } else {
            foreach lib $libs {
                cc-with [list -libs -l$lib] {
                    if {[cctest_function $function]} {
                        msg-result -l$lib
                        define lib_$function -l$lib
                        incr found
                        break
                    }
                }
            }
        }
    }
    if {$found} {
        define [feature-define-name $function]
    } else {
        msg-result "no"
    }
    return $found
}

if {![opt-bool internal-sqlite]} {
  proc find_system_sqlite {} {

    # On some systems (slackware), libsqlite3 requires -ldl to link. So
    # search for the system SQLite once with -ldl, and once without. If
    # the library can only be found with $extralibs set to -ldl, then
    # the code below will append -ldl to LIBS.
    #
    foreach extralibs {{} {-ldl}} {

      # Locate the system SQLite by searching for sqlite3_open(). Then check
      # if sqlite3_stmt_isexplain can be found as well. If we can find open() but
      # not stmt_isexplain(), then the system SQLite is too old to link against
      # fossil.
      #
      if {[check-function-in-lib sqlite3_open sqlite3 $extralibs]} {
        # Success. Update symbols and return.
        #
        define USE_SYSTEM_SQLITE 1
        define-append LIBS -lsqlite3
        define-append LIBS $extralibs
        return
      }
    }
    user-error "system sqlite3 not found"
  }

  find_system_sqlite

  proc test_system_sqlite {} {
    # Check compatibility of the system SQLite library by running the
    # sqlcompttest.c program in the source tree passes
    # MINIMUM_SQLITE_VERSION set at the top of this file to
    # sqlcompttest.c
    #
    set cmdline {}
    lappend cmdline {*}[get-define CCACHE]
    lappend cmdline {*}[get-define CC] {*}[get-define CFLAGS]
    lappend cmdline $::autosetup(dir)/../tools/sqlcompattest.c -o conftest__
    lappend cmdline {*}[get-define LDFLAGS]
    lappend cmdline {*}[get-define LIBS]
    set sqlite-version [string cat "-D MINIMUM_SQLITE_VERSION=" [get-define MINIMUM_SQLITE_VERSION]]
    lappend cmdline {*}[set sqlite-version]
    set ok 1
    set err [catch {exec-with-stderr {*}$cmdline} result errinfo]
    if {$err} {
       configlog "Failed: [join $cmdline]"
       if {[string length $result]>0} {configlog $result}
       configlog "============"
       set ok 0
    } elseif {$::autosetup(debug)} {
       configlog "Compiled OK: [join $cmdline]"
       configlog "============"
    }
    if {!$ok} {
      user-error "unable to compile SQLite compatibility test program"
    }
    set err [catch {exec-with-stderr ./conftest__} result errinfo]
    if {[get-define build] eq [get-define host]} {
      set err [catch {exec-with-stderr ./conftest__} result errinfo]
      if {$err} {
        user-error $result
      }
    }
    file delete ./conftest__
  }
  test_system_sqlite

}

proc is_mingw {} {
    return [string match *mingw* [get-define host]]
}

if {[is_mingw]} {
    define-append EXTRA_CFLAGS -DBROKEN_MINGW_CMDLINE
    define-append LIBS -lkernel32 -lws2_32
} else {
    #
    # NOTE: All platforms except MinGW should use the linenoise
    #       package.  It is currently unsupported on Win32.
    #
    define USE_LINENOISE 1
}

if {[string match *-solaris* [get-define host]]} {
    define-append EXTRA_CFLAGS {-D__EXTENSIONS__}
}

if {[opt-bool fossil-debug]} {
    define CFLAGS {-g -O0 -Wall}
    define-append CFLAGS -DFOSSIL_DEBUG
    msg-result "Debugging support enabled"
}

if {[opt-bool no-opt]} {
    define CFLAGS {-g -O0 -Wall}
    msg-result "Builting without compiler optimization"
    if {[opt-bool fossil-debug]} {
        define-append CFLAGS -DFOSSIL_DEBUG
    }
}

if {[opt-bool with-mman]} {
    define-append EXTRA_CFLAGS -DUSE_MMAN_H
    define USE_MMAN_H 1
    msg-result "Enabling \"sys/mman.h\" support"
}

if {[opt-bool with-see]} {
    define-append EXTRA_CFLAGS -DUSE_SEE
    define USE_SEE 1
    define SQLITE3_ORIGIN 1
    msg-result "Enabling encryption support"
}

if {[opt-bool json]} {
    # Reminder/FIXME (stephan): FOSSIL_ENABLE_JSON
    # is required in the CFLAGS because json*.c
    # have #ifdef guards around the whole file without
    # reading config.h first.
    define-append EXTRA_CFLAGS -DFOSSIL_ENABLE_JSON
    define FOSSIL_ENABLE_JSON
    msg-result "JSON support enabled"
}

if {[opt-bool with-exec-rel-paths]} {
    define-append EXTRA_CFLAGS -DFOSSIL_ENABLE_EXEC_REL_PATHS
    define FOSSIL_ENABLE_EXEC_REL_PATHS
    msg-result "Relative paths in external diff/gdiff enabled"
}

if {[opt-bool with-th1-docs]} {
    define-append EXTRA_CFLAGS -DFOSSIL_ENABLE_TH1_DOCS
    define FOSSIL_ENABLE_TH1_DOCS
    msg-result "TH1 embedded documentation support enabled"
}

if {[opt-bool with-th1-hooks]} {
    define-append EXTRA_CFLAGS -DFOSSIL_ENABLE_TH1_HOOKS
    define FOSSIL_ENABLE_TH1_HOOKS
    msg-result "TH1 hooks support enabled"
}

#if {[opt-bool markdown]} {
#    # no-op.  Markdown is now enabled by default.
#    msg-result "Markdown support enabled"
#}

if {[opt-bool static]} {
    # XXX: This will not work on all systems.
    define-append EXTRA_LDFLAGS -static
    msg-result "Trying to link statically"
} else {
    define-append EXTRA_CFLAGS -DFOSSIL_DYNAMIC_BUILD=1
    define FOSSIL_DYNAMIC_BUILD
}

# Check for libraries that need to be sorted out early
cc-check-function-in-lib iconv iconv

# Helper for OpenSSL checking
proc check-for-openssl {msg {cflags {}} {libs {-lssl -lcrypto -lpthread}}} {
    msg-checking "Checking for $msg..."
    set rc 0
    if {[is_mingw]} {
        lappend libs -lgdi32 -lwsock32 -lcrypt32
    }
    if {[info exists ::zlib_lib]} {
        lappend libs $::zlib_lib
    }
    msg-quiet cc-with [list -cflags $cflags -libs $libs] {
        if {[cc-check-includes openssl/ssl.h] && \
                [cc-check-functions SSL_new]} {
            incr rc
        }
    }
    if {!$rc && ![is_mingw]} {
        # On some systems, OpenSSL appears to require -ldl to link.
        lappend libs -ldl
        msg-quiet cc-with [list -cflags $cflags -libs $libs] {
            if {[cc-check-includes openssl/ssl.h] && \
                    [cc-check-functions SSL_new]} {
                incr rc
            }
        }
    }
    if {$rc} {
        msg-result "ok"
        return 1
    } else {
        msg-result "no"
        return 0
    }
}

# Check for zlib, using the given location if specified
set zlibpath [opt-val with-zlib]
if {$zlibpath eq "tree"} {
  set zlibdir [file dirname $autosetup(dir)]/compat/zlib
  if {![file isdirectory $zlibdir]} {
    user-error "The zlib in source tree directory does not exist"
  } elseif { ([llength [glob -nocomplain -directory $zlibdir libz*]] == 0) } {
    user-error "With --with-zlib=tree, $zlibdir must be configured and built first."
  }
  cc-with [list -cflags "-I$zlibdir -L$zlibdir"]
  define-append EXTRA_CFLAGS -I$zlibdir
  define-append LIBS $zlibdir/libz.a
  set ::zlib_lib $zlibdir/libz.a
  msg-result "Using zlib in source tree"
} else {
  set cftry {""}
  set ldtry {""}
  if {$zlibpath ni {auto ""}} {
    lappend cftry "-I$zlibpath"
    lappend cftry "-I$zlibpath/include"
    lappend ldtry "-L$zlibpath"
    lappend ldtry "-L$zlibpath/lib"
  }

  # Reverse the list of tests so we check most-specific to least, else
  # platform devel files will shadow local --with-zlib overrides.
  foreach c [lreverse $cftry] {
    if {[cc-with [list -cflags $c] {cc-check-includes zlib.h}]} {
      if {$c eq ""} {
        msg-result "Found zlib.h in default include path"
      } else {
        define-append EXTRA_CFLAGS "$c"
        msg-result "Found zlib.h via $c"
      }
      set cfound $c
      break
    }
  }
  if {![info exists cfound]} {
    user-error "zlib.h not found; either install it or specify its location via --with-zlib"
  }
  foreach lcheck [lreverse $ldtry] {
    if {[cc-with [list -cflags "$cfound $lcheck"] {check-function-in-lib inflateEnd z}]} {
      if {$lcheck eq ""} {
        msg-result "Linked to zlib via default library path"
      } else {
        define-append EXTRA_LDFLAGS "$lcheck"
        msg-result "Linked to zlib via $lcheck"
      }
      if {![check-function-in-lib compressBound z]} {
        puts "Notice: disabling zlib compression in the SQL shell"
        define-append SQLITE_OPTIONS_EXT {-USQLITE_HAVE_ZLIB}
      }
      break
    }
  }
  set ::zlib_lib -lz
}

set ssldirs [opt-val with-openssl]
if {$ssldirs ne "none"} {
    set found 0
    if {$ssldirs eq "tree"} {
        set ssldir [file dirname $autosetup(dir)]/compat/openssl
        if {![file isdirectory $ssldir]} {
            user-error "The OpenSSL in source tree directory does not exist"
        }
        set msg "ssl in $ssldir"
        set cflags "-I$ssldir/include"
        set ldflags "-L$ssldir"
        set ssllibs "$ssldir/libssl.a $ssldir/libcrypto.a -lpthread"
        set found [check-for-openssl "ssl in source tree" "$cflags $ldflags" $ssllibs]
    } else {
        if {$ssldirs in {auto ""}} {
            catch {
                set cflags [exec pkg-config openssl --cflags-only-I]
                set ldflags [exec pkg-config openssl --libs-only-L]
                set found [check-for-openssl "ssl via pkg-config" "$cflags $ldflags"]
            } msg
            if {!$found} {
                set ssldirs "{} /usr/sfw /usr/local/ssl /usr/lib/ssl /usr/ssl \
                             /usr/pkg /usr/local /usr /usr/local/opt/openssl \
                             /opt/homebrew/opt/openssl"
            }
        }
        if {!$found} {
            foreach dir $ssldirs {
                if {$dir eq ""} {
                    set msg "system ssl"
                    set cflags ""
                    set ldflags ""
                } else {
                    set msg "ssl in $dir"
                    set cflags "-I$dir/include"
                    set ldflags "-L$dir/lib"
                }
                if {[check-for-openssl $msg "$cflags $ldflags"]} {
                    incr found
                    break
                }
            }
        }
    }
    if {$found} {
        define FOSSIL_ENABLE_SSL
        define-append EXTRA_CFLAGS $cflags
        define-append EXTRA_LDFLAGS $ldflags
        define-append CFLAGS $cflags
        define-append LDFLAGS $ldflags
        if {[info exists ssllibs]} {
            define-append LIBS $ssllibs
        } else {
            define-append LIBS -lssl -lcrypto
        }
        if {[info exists ::zlib_lib]} {
            define-append LIBS $::zlib_lib
        }
        if {[is_mingw]} {
            define-append LIBS -lgdi32 -lwsock32 -lcrypt32
        }
        msg-result "HTTPS support enabled"

        # Silence OpenSSL deprecation warnings on Mac OS X 10.7.
        if {[string match *-darwin* [get-define host]]} {
            if {[cctest -cflags {-Wdeprecated-declarations}]} {
                define-append EXTRA_CFLAGS -Wdeprecated-declarations
            }
        }
    } else {
        user-error "OpenSSL not found. Consider --with-openssl=none to disable HTTPS support"
    }
} else {
    if {[info exists ::zlib_lib]} {
        define-append LIBS $::zlib_lib
    }
}



########################################################################
# --with-sqlite=PATH checks for the first it finds of the following...
# - PATH/sqlite3.c and PATH/sqlite3.h
# - PATH/sqlite3.o (and assumes sqlite3.h is with it)
# - PATH/lib/libsqlite3* and PATH/include/sqlite3.h
define CFLAGS_INCLUDE {}
# ^^^ CFLAGS_INCLUDE is ONLY for -I... flags and their order is
# significant so that --with-sqlite=PATH's header can shadow our
# own. One caveat with this is that we cannot point --with-sqlite=PATH
# to the root of sqlite3's own build tree because that dir has a
# config.h which ends up shadowing src/config.h, breaking our build.
set sq3path [opt-val with-sqlite]
define SQLITE3_SRC.2 {}
define SQLITE3_OBJ.2 {}
define SQLITE3_SHELL_SRC.2 {$(SQLITE3_SHELL_SRC.0)}
if {$sq3path in {tree ""}} {
  msg-result "Using sqlite3.c from this source tree."
} else {
  # SQLITE3_ORIGIN:
  #   0 = local source tree
  #   1 = use external lib or sqlite3.o
  #   2 = use external sqlite3.c and (if found) shell.c
  define USE_SYSTEM_SQLITE 1
  define SQLITE3_ORIGIN 2
  if {$sq3path != "auto"} {
    if {([file exists $sq3path/sqlite3.c]) && \
        ([file exists $sq3path/sqlite3.h]) } {
      # Prefer sqlite3.[ch] if found.
      define SQLITE3_SRC.2 $sq3path/sqlite3.c
      define SQLITE3_OBJ.2 {$(SQLITE3_OBJ.0)}
      define USE_SYSTEM_SQLITE 2
      define SQLITE3_ORIGIN 2
      if {[file exists $sq3path/shell.c]} {
        define SQLITE3_SHELL_SRC.2 $sq3path/shell.c
      }
      define-append CFLAGS_INCLUDE -I$sq3path
      define-append EXTRA_LDFLAGS -lpthread
      # ^^^ additional -lXXX flags are conservative estimates
      msg-result "Using sqlite3.c and sqlite3.h from $sq3path"
    } elseif {[file exists $sq3path/sqlite3.o]} {
      # Use sqlite3.o if found.
      define SQLITE3_OBJ.2 $sq3path/sqlite3.o
      define-append CFLAGS_INCLUDE -I$sq3path
      define-append EXTRA_LDFLAGS $sq3path/sqlite3.o -lpthread
      # ^^^ additional -lXXX flags are conservative estimates
      msg-result "Using sqlite3.o from $sq3path"
    } elseif { ([llength [glob -nocomplain -directory $sq3path/lib libsqlite3*]] != 0) \
                 && ([file exists $sq3path/include/sqlite3.h]) } {
      # e.g. --with-sqlite=/usr/local. Try $sq3path/lib/libsqlite3*
      # and $sq3path/include/sqlite3.h
      define-append CFLAGS_INCLUDE -I$sq3path/include
      define-append EXTRA_LDFLAGS -L$sq3path/lib -lsqlite3 -lpthread
      # ^^^ additional -lXXX flags are conservative estimates
      msg-result "Using -lsqlite3 from $sq3path"
    } else {
      # Assume $sq3path holds both the lib and header
      cc-with [list -cflags "-I$sq3path -L$sq3path"]
      define-append CFLAGS_INCLUDE -I$sq3path
      define-append EXTRA_LDFLAGS -L$sq3path -lsqlite3 -lpthread
      # ^^^ additional -lXXX flags are conservative estimates
      msg-result "Using -lsqlite3 from $sq3path"
    }
  } elseif {![cc-check-includes sqlite3.h] || ![check-function-in-lib sqlite3_open_v2 sqlite3]} {
    user-error "libsqlite3 not found please install it or specify the location with --with-sqlite"
  }
}
define-append CFLAGS_INCLUDE {-I. -I$(SRCDIR) -I$(SRCDIR_extsrc)}

set tclpath [opt-val with-tcl]
if {$tclpath ne ""} {
    set tclprivatestubs [opt-bool with-tcl-private-stubs]
    # Note parse-tclconfig-sh is in autosetup/local.tcl
    if {$tclpath eq "1"} {
        set tcldir [file dirname $autosetup(dir)]/compat/tcl-8.6
        if {$tclprivatestubs} {
            set tclconfig(TCL_INCLUDE_SPEC) -I$tcldir/generic
            set tclconfig(TCL_VERSION) {Private Stubs}
            set tclconfig(TCL_PATCH_LEVEL) {}
            set tclconfig(TCL_PREFIX) $tcldir
            set tclconfig(TCL_LD_FLAGS) { }
        } else {
            # Use the system Tcl. Look in some likely places.
            array set tclconfig [parse-tclconfig-sh \
                $tcldir/unix $tcldir/win \
                /usr /usr/local /usr/share /opt/local]
            set msg "on your system"
        }
    } else {
        array set tclconfig [parse-tclconfig-sh $tclpath]
        set msg "at $tclpath"
    }
    if {[opt-bool static]} {
        set tclconfig(TCL_LD_FLAGS) { }
    }
    if {![info exists tclconfig(TCL_INCLUDE_SPEC)]} {
        user-error "Cannot find Tcl $msg"
    }
    set tclstubs [opt-bool with-tcl-stubs]
    if {$tclprivatestubs} {
        define FOSSIL_ENABLE_TCL_PRIVATE_STUBS
        define USE_TCL_STUBS
    } elseif {$tclstubs && $tclconfig(TCL_SUPPORTS_STUBS)} {
        set libs "$tclconfig(TCL_STUB_LIB_SPEC)"
        define FOSSIL_ENABLE_TCL_STUBS
        define USE_TCL_STUBS
    } else {
        set libs "$tclconfig(TCL_LIB_SPEC) $tclconfig(TCL_LIBS)"
    }
    set cflags $tclconfig(TCL_INCLUDE_SPEC)
    if {!$tclprivatestubs} {
        set foundtcl 0; # Did we find a working Tcl library?
        cc-with [list -cflags $cflags -libs $libs] {
            if {$tclstubs} {
                if {[cc-check-functions Tcl_InitStubs]} {
                    set foundtcl 1
                }
            } else {
                if {[cc-check-functions Tcl_CreateInterp]} {
                    set foundtcl 1
                }
            }
        }
        if {!$foundtcl && [string match *-lieee* $libs]} {
            # On some systems, using "-lieee" from TCL_LIB_SPEC appears
            # to cause issues.
            msg-result "Removing \"-lieee\" and retrying for Tcl..."
            set libs [string map [list -lieee ""] $libs]
            cc-with [list -cflags $cflags -libs $libs] {
                if {$tclstubs} {
                    if {[cc-check-functions Tcl_InitStubs]} {
                        set foundtcl 1
                    }
                } else {
                    if {[cc-check-functions Tcl_CreateInterp]} {
                        set foundtcl 1
                    }
                }
            }
        }
        if {!$foundtcl && ![string match *-lpthread* $libs]} {
            # On some systems, TCL_LIB_SPEC appears to be missing
            # "-lpthread".  Try adding it.
            msg-result "Adding \"-lpthread\" and retrying for Tcl..."
            set libs "$libs -lpthread"
            cc-with [list -cflags $cflags -libs $libs] {
                if {$tclstubs} {
                    if {[cc-check-functions Tcl_InitStubs]} {
                        set foundtcl 1
                    }
                } else {
                    if {[cc-check-functions Tcl_CreateInterp]} {
                        set foundtcl 1
                    }
                }
            }
        }
        if {!$foundtcl} {
            if {$tclstubs} {
                user-error "Cannot find a usable Tcl stubs library $msg"
            } else {
                user-error "Cannot find a usable Tcl library $msg"
            }
        }
    }
    set version $tclconfig(TCL_VERSION)$tclconfig(TCL_PATCH_LEVEL)
    msg-result "Found Tcl $version at $tclconfig(TCL_PREFIX)"
    if {!$tclprivatestubs} {
        define-append LIBS $libs
    }
    define-append EXTRA_CFLAGS $cflags
    define-append CFLAGS $cflags
    if {[info exists zlibpath] && $zlibpath eq "tree"} {
      #
      # NOTE: When using zlib in the source tree, prevent Tcl from
      #       pulling in the system one.
      #
      set tclconfig(TCL_LD_FLAGS) [string map [list -lz ""] \
          $tclconfig(TCL_LD_FLAGS)]
    }
    #
    # NOTE: Remove "-ldl" from the TCL_LD_FLAGS because it will be
    #       be checked for near the bottom of this file.
    #
    set tclconfig(TCL_LD_FLAGS) [string map [list -ldl ""] \
        $tclconfig(TCL_LD_FLAGS)]
    define-append EXTRA_LDFLAGS $tclconfig(TCL_LD_FLAGS)
    define FOSSIL_ENABLE_TCL
}

# Emscripten is a purely optional component used only for doing
# in-tree builds of WASM stuff, as opposed to WASM binaries we import
# from other places. This is only set up for Unix-style OSes and is
# untested anywhere but Linux.
set emsdkHome [opt-val with-emsdk]
define EMSDK_HOME ""
define EMSDK_ENV ""
define EMCC_OPT "-Oz"
if {$emsdkHome eq "" && [info exists ::env(EMSDK)]} {
  # Fall back to checking the environment. $EMSDK gets set
  # by sourcing emsdk_env.sh.
  set emsdkHome $::env(EMSDK)
}
if {$emsdkHome ne ""} {
  define EMSDK_HOME $emsdkHome
  set emsdkEnv "$emsdkHome/emsdk_env.sh"
  if {[file exists $emsdkEnv]} {
    puts "Using Emscripten SDK environment from $emsdkEnv."
    define EMSDK_ENV $emsdkEnv
    if {[info exists ::env(EMCC_OPT)]} {
      define EMCC_OPT $::env(EMCC_OPT)
    }
  } else {
    puts "emsdk_env.sh not found. Assuming emcc is in the PATH."
  }
}

# Network functions require libraries on some systems
cc-check-function-in-lib gethostbyname nsl
if {![cc-check-function-in-lib socket {socket network}]} {
    # Last resort, may be Windows
    if {[is_mingw]} {
        define-append LIBS -lwsock32
    }
}

# The SMTP module requires special libraries and headers for MX DNS
# record lookups and such.
cc-check-includes arpa/nameser.h
cc-include-needs bind/resolv.h netinet/in.h
cc-check-includes bind/resolv.h
cc-check-includes resolv.h
if {    !(([cc-check-function-in-lib dn_expand resolv] ||
           [cc-check-function-in-lib   ns_name_uncompress {bind resolv}] ||
           [cc-check-function-in-lib __ns_name_uncompress {bind resolv}]) &&
          ([cc-check-function-in-lib   ns_parserr {bind resolv}] ||
           [cc-check-function-in-lib __ns_parserr {bind resolv}]) &&
          ([cc-check-function-in-lib   res_query {bind resolv}] ||
           [cc-check-function-in-lib __res_query {bind resolv}]))} {
    msg-result "WARNING: SMTP feature will not be able to look up local MX."
}
cc-check-function-in-lib res_9_ns_initparse resolv

# Other nonstandard function checks
cc-check-functions utime
cc-check-functions usleep
cc-check-functions strchrnul
cc-check-functions pledge
cc-check-functions backtrace

# Termux on Android adds "getpass(char *)" to unistd.h, so check this so we
# guard against including it again; use cctest as cc-check-functions and 
# cctest_function check for "getpass()" with no args and fail
if {[cctest -link 1 -includes {unistd.h} -code "getpass(0);"]} {
    define FOSSIL_HAVE_GETPASS 1
    msg-result "Found getpass() with unistd.h"
}

# Check for getloadavg(), and if it doesn't exist, define FOSSIL_OMIT_LOAD_AVERAGE
if {![cc-check-functions getloadavg] ||
    ![cctest -link 1 -includes {unistd.h} -code "double a\[3\]; getloadavg(a,3);"]} {
  define FOSSIL_OMIT_LOAD_AVERAGE 1
  msg-result "Load average support unavailable"
}

# Check for getpassphrase() for Solaris 10 where getpass() truncates to 10 chars
if {![cc-check-functions getpassphrase]} {
    # Haiku needs this
    cc-check-function-in-lib getpass bsd
}
cc-check-function-in-lib sin m

# Check for the FuseFS library
if {[opt-bool fusefs]} {
  if {[opt-bool static]} {
     msg-result "FuseFS support disabled due to -static"
  } elseif {[cc-check-function-in-lib fuse_mount fuse]} {
     define-append EXTRA_CFLAGS -DFOSSIL_HAVE_FUSEFS
     define FOSSIL_HAVE_FUSEFS 1
     msg-result "FuseFS support enabled"
  }
}

########################################################################
# Checks the compiler for compile_commands.json support.
#
# Returns 1 if supported, else 0. Defines MAKE_COMPILATION_DB to "yes"
# if supported, "no" if not.
proc check-compile-commands {} {
    msg-checking "compile_commands.json support... "
    if {[cctest -lang c -cflags {/dev/null -MJ} -source {}]} {
        # This test reportedly incorrectly succeeds on one of
        # Martin G.'s older systems.
        msg-result "compiler supports compile_commands.json"
        define MAKE_COMPILATION_DB yes
        return 1
    } else {
        msg-result "compiler does not support compile_commands.json"
        define MAKE_COMPILATION_DB no
        return 0
    }
}

define MAKE_COMPILATION_DB no
if {!$outOfTreeBuild} {
  if {[opt-bool compile-commands]} {
    check-compile-commands
  } else {
    puts "Use --compile-commands to enable check for compile-commands-capable compiler."
  }
} else {
  puts "Disabling compile_commands.json check for out-of-tree build."
  # This is an attempt to resolve the problem reported at
  # https://fossil-scm.org/forum/forumpost/d19061d09a8179d0
}

# Add -fsanitize compile and link options late: we don't want the C
# checks above to run with those sanitizers enabled.  It can not only
# be pointless, it can actually break correct tests.
set fsan [opt-val with-sanitizer]
if {[string length $fsan]} {
    define-append  EXTRA_CFLAGS -fsanitize=$fsan
    define-append EXTRA_LDFLAGS -fsanitize=$fsan
    if {[string first "undefined" $fsan] != -1} {
        # We need to link with libubsan if we're compiling under
        # GCC with -fsanitize=undefined.
        cc-check-function-in-lib __ubsan_handle_add_overflow ubsan
    }
}

# Finally, append libraries that must be last. This matters more on some
# OSes than others, but is most broadly required for static linking.
if {[check-function-in-lib dlopen dl]} {
    # Some platforms (*BSD) have the dl functions already in libc and no libdl.
    # In such case we can link directly without -ldl.
    define-append LIBS [get-define lib_dlopen]
}
if {[opt-bool static]} {
    # Linux can only infer the dependency on pthread from OpenSSL when
    # doing dynamic linkage.
    define-append LIBS -lpthread
}

if {[get-define EMSDK_HOME] ne ""} {
  define EMCC_WRAPPER $::autosetup(dir)/../tools/emcc.sh
  make-template tools/emcc.sh.in
  catch {exec chmod u+x tools/emcc.sh}
} else {
  define EMCC_WRAPPER ""
  catch {exec rm -f tools/emcc.sh}
}

# Tag container builds with a prefix of the checkin ID of the version
# of Fossil each one contains.  This not only allows multiple images
# to coexist and multiple containers to be created unamgiguosly from
# them, it also changes the URL we fetch the source tarball from, so
# repeated builds of a given version generate and fetch the source
# tarball once only, keeping it in the local Docker/Podman cache.
set ci [readfile "$::autosetup(srcdir)/manifest.uuid"]
define FOSSIL_CI_PFX [string range $ci 0 11]

make-template Makefile.in
make-config-header autoconfig.h -auto {USE_* FOSSIL_*}
Added autosetup/LICENSE.



































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Unless explicitly stated, all files which form part of autosetup
are released under the following license:

---------------------------------------------------------------------
autosetup - A build environment "autoconfigurator"

Copyright (c) 2010-2011, WorkWare Systems <http://workware.net.au/>

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above
   copyright notice, this list of conditions and the following
   disclaimer in the documentation and/or other materials
   provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE WORKWARE SYSTEMS ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WORKWARE
SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation
are those of the authors and should not be interpreted as representing
official policies, either expressed or implied, of WorkWare Systems.
Added autosetup/README.autosetup.











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README.autosetup created by autosetup v0.7.2

This is the autosetup directory for a local install of autosetup.
It contains autosetup, support files and loadable modules.

*.tcl files in this directory are optional modules which
can be loaded with the 'use' directive.

*.auto files in this directory are auto-loaded.

For more information, see https://msteveb.github.io/autosetup/
Added autosetup/autosetup.








































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#!/bin/sh
# Copyright (c) 2006-2011 WorkWare Systems http://www.workware.net.au/
# All rights reserved
# vim:se syntax=tcl:
# \
dir=`dirname "$0"`; exec "`$dir/autosetup-find-tclsh`" "$0" "$@"

# Note that the version has a trailing + on unreleased versions
set autosetup(version) 0.7.2

# Can be set to 1 to debug early-init problems
set autosetup(debug) [expr {"--debug" in $argv}]

##################################################################
#
# Main flow of control, option handling
#
proc main {argv} {
	global autosetup define

	# There are 3 potential directories involved:
	# 1. The directory containing autosetup (this script)
	# 2. The directory containing auto.def
	# 3. The current directory

	# From this we need to determine:
	# a. The path to this script (and related support files)
	# b. The path to auto.def
	# c. The build directory, where output files are created

	# This is also complicated by the fact that autosetup may
	# have been run via the configure wrapper ([getenv WRAPPER] is set)

	# Here are the rules.
	# a. This script is $::argv0
	#    => dir, prog, exe, libdir
	# b. auto.def is in the directory containing the configure wrapper,
	#    otherwise it is in the current directory.
	#    => srcdir, autodef
	# c. The build directory is the current directory
	#    => builddir, [pwd]

	# 'misc' is needed before we can do anything, so set a temporary libdir
	# in case this is the development version
	set autosetup(libdir) [file dirname $::argv0]/lib
	use misc

	# (a)
	set autosetup(dir) [realdir [file dirname [realpath $::argv0]]]
	set autosetup(prog) [file join $autosetup(dir) [file tail $::argv0]]
	set autosetup(exe) [getenv WRAPPER $autosetup(prog)]
	if {$autosetup(installed)} {
		set autosetup(libdir) $autosetup(dir)
	} else {
		set autosetup(libdir) [file join $autosetup(dir) lib]
	}
	autosetup_add_dep $autosetup(prog)

	# (b)
	if {[getenv WRAPPER ""] eq ""} {
		# Invoked directly
		set autosetup(srcdir) [pwd]
	} else {
		# Invoked via the configure wrapper
		set autosetup(srcdir) [file-normalize [file dirname $autosetup(exe)]]
	}
	set autosetup(autodef) [relative-path $autosetup(srcdir)/auto.def]

	# (c)
	set autosetup(builddir) [pwd]

	set autosetup(argv) $argv
	set autosetup(cmdline) {}
	# options is a list of known options
	set autosetup(options) {}
	# optset is a dictionary of option values set by the user based on getopt
	set autosetup(optset) {}
	# optdefault is a dictionary of default values
	set autosetup(optdefault) {}
	# options-defaults is a dictionary of overrides for default values for options
	set autosetup(options-defaults) {}
	set autosetup(optionhelp) {}
	set autosetup(showhelp) 0

	use util

	# Parse options
	use getopt

	# At the is point we don't know what is a valid option
	# We simply parse anything that looks like an option
	set autosetup(getopt) [getopt argv]

	#"=Core Options:"
	options-add {
		help:=all       => "display help and options. Optional: module name, such as --help=system"
		licence license => "display the autosetup license"
		version         => "display the version of autosetup"
		ref:=text manual:=text
		reference:=text => "display the autosetup command reference. 'text', 'wiki', 'asciidoc' or 'markdown'"
		debug           => "display debugging output as autosetup runs"
		install:=.      => "install autosetup to the current or given directory"
	}
	if {$autosetup(installed)} {
		# hidden options so we can produce a nice error
		options-add {
			sysinstall:path
		}
	} else {
		options-add {
			sysinstall:path  => "install standalone autosetup to the given directory (e.g.: /usr/local)"
		}
	}
	options-add {
		force init:=help   => "create initial auto.def, etc.  Use --init=help for known types"
		# Undocumented options
		option-checking=1
		nopager
		quiet
		timing
		conf:
	}

	if {[opt-bool version]} {
		puts $autosetup(version)
		exit 0
	}

	# autosetup --conf=alternate-auto.def
	if {[opt-str conf o]} {
		set autosetup(autodef) $o
	}

	# Debugging output (set this early)
	incr autosetup(debug) [opt-bool debug]
	incr autosetup(force) [opt-bool force]
	incr autosetup(msg-quiet) [opt-bool quiet]
	incr autosetup(msg-timing) [opt-bool timing]

	# If the local module exists, source it now to allow for
	# project-local customisations
	if {[file exists $autosetup(libdir)/local.tcl]} {
		use local
	}

	# Now any auto-load modules
	autosetup_load_auto_modules

	if {[opt-str help o]} {
		incr autosetup(showhelp)
		use help
		autosetup_help $o
	}

	if {[opt-bool licence license]} {
		use help
		autosetup_show_license
		exit 0
	}

	if {[opt-str {manual ref reference} o]} {
		use help
		autosetup_reference $o
	}

	# Allow combining --install and --init
	set earlyexit 0
	if {[opt-str install o]} {
		use install
		autosetup_install $o
		incr earlyexit
	}

	if {[opt-str init o]} {
		use init
		autosetup_init $o
		incr earlyexit
	}

	if {$earlyexit} {
		exit 0
	}
	if {[opt-str sysinstall o]} {
		use install
		autosetup_install $o 1
		exit 0
	}

	if {![file exists $autosetup(autodef)]} {
		# Check for invalid option first
		options {}
		user-error "No auto.def found in \"$autosetup(srcdir)\" (use [file tail $::autosetup(exe)] --init to create one)"
	}

	# Parse extra arguments into autosetup(cmdline)
	foreach arg $argv {
		if {[regexp {([^=]*)=(.*)} $arg -> n v]} {
			dict set autosetup(cmdline) $n $v
			define $n $v
		} else {
			user-error "Unexpected parameter: $arg"
		}
	}

	autosetup_add_dep $autosetup(autodef)

	# Add $argv to CONFIGURE_OPTS
	define-append-argv CONFIGURE_OPTS {*}$autosetup(argv)
	# Set up AUTOREMAKE to reconfigure with the same args
	define-append-argv AUTOREMAKE {*}$autosetup(exe) {*}$autosetup(argv)

	# Log how we were invoked
	configlog "Invoked as: [getenv WRAPPER $::argv0] [quote-argv $autosetup(argv)]"
	configlog "Tclsh: [info nameofexecutable]"

	# Load auto.def as module "auto.def"
	autosetup_load_module auto.def source $autosetup(autodef)

	# Could warn here if options {} was not specified

	show-notices

	if {$autosetup(debug)} {
		msg-result "Writing all defines to config.log"
		configlog "================ defines ======================"
		foreach n [lsort [array names define]] {
			configlog "define $n $define($n)"
		}
	}

	exit 0
}

# @section Option Handling

# @opt-bool ?-nodefault? option ...
#
# Check each of the named, boolean options and if any have been explicitly enabled
# or disabled by the user, return 1 or 0 accordingly.
#
# If the option was specified more than once, the last value wins.
# e.g. With '--enable-foo --disable-foo', '[opt-bool foo]' will return 0
#
# If no value was specified by the user, returns the default value for the
# first option. If '-nodefault' is given, this behaviour changes and
# -1 is returned instead.
#
proc opt-bool {args} {
	set nodefault 0
	if {[lindex $args 0] eq "-nodefault"} {
		set nodefault 1
		set args [lrange $args 1 end]
	}
	option-check-names {*}$args

	foreach opt $args {
		if {[dict exists $::autosetup(optset) $opt]} {
			return [dict get $::autosetup(optset) $opt]
		}
	}

	if {$nodefault} {
		return -1
	}
	# Default value is the default for the first option
	return [dict get $::autosetup(optdefault) [lindex $args 0]]
}

# @opt-val optionlist ?default=""?
#
# Returns a list containing all the values given for the non-boolean options in '$optionlist'.
# There will be one entry in the list for each option given by the user, including if the
# same option was used multiple times.
#
# If no options were set, '$default' is returned (exactly, not as a list).
#
# Note: For most use cases, 'opt-str' should be preferred.
#
proc opt-val {names {default ""}} {
	option-check-names {*}$names

	foreach opt $names {
		if {[dict exists $::autosetup(optset) $opt]} {
			lappend result {*}[dict get $::autosetup(optset) $opt]
		}
	}
	if {[info exists result]} {
		return $result
	}
	return $default
}

# @opt-str optionlist varname ?default?
#
# Sets '$varname' in the callers scope to the value for one of the given options.
#
# For the list of options given in '$optionlist', if any value is set for any option,
# the option value is taken to be the *last* value of the last option (in the order given).
#
# If no option was given, and a default was specified with 'options-defaults',
# that value is used.
#
# If no 'options-defaults' value was given and '$default' was given, it is used.
#
# If none of the above provided a value, no value is set.
#
# The return value depends on whether '$default' was specified.
# If it was, the option value is returned.
# If it was not, 1 is returns if a value was set, or 0 if not.
#
# Typical usage is as follows:
#
## if {[opt-str {myopt altname} o]} {
##     do something with $o
## }
#
# Or:
## define myname [opt-str {myopt altname} o "/usr/local"]
#
proc opt-str {names varname args} {
	global autosetup

	option-check-names {*}$names
	upvar $varname value

	if {[llength $args]} {
		# A default was given, so always return the string value of the option
		set default [lindex $args 0]
		set retopt 1
	} else {
		# No default, so return 0 or 1 to indicate if a value was found
		set retopt 0
	}

	foreach opt $names {
		if {[dict exists $::autosetup(optset) $opt]} {
			set result [lindex [dict get $::autosetup(optset) $opt] end]
		}
	}

	if {![info exists result]} {
		# No user-specified value. Has options-defaults been set?
		foreach opt $names {
			if {[dict exists $::autosetup(optdefault) $opt]} {
				set result [dict get $autosetup(optdefault) $opt]
			}
		}
	}

	if {[info exists result]} {
		set value $result
		if {$retopt} {
			return $value
		}
		return 1
	}

	if {$retopt} {
		set value $default
		return $value
	}

	return 0
}

proc option-check-names {args} {
	foreach o $args {
		if {$o ni $::autosetup(options)} {
			autosetup-error "Request for undeclared option --$o"
		}
	}
}

# Parse the option definition in $opts and update
# ::autosetup(setoptions) and ::autosetup(optionhelp) appropriately
#
proc options-add {opts} {
	global autosetup

	# First weed out comment lines
	set realopts {}
	foreach line [split $opts \n] {
		if {![string match "#*" [string trimleft $line]]} {
			append realopts $line \n
		}
	}
	set opts $realopts

	for {set i 0} {$i < [llength $opts]} {incr i} {
		set opt [lindex $opts $i]
		if {[string match =* $opt]} {
			# This is a special heading
			lappend autosetup(optionhelp) [list $opt $autosetup(module)]
			continue
		}
		unset -nocomplain defaultvalue equal value

		#puts "i=$i, opt=$opt"
		regexp {^([^:=]*)(:)?(=)?(.*)$} $opt -> name colon equal value
		if {$name in $autosetup(options)} {
			autosetup-error "Option $name already specified"
		}

		#puts "$opt => $name $colon $equal $value"

		# Find the corresponding value in the user options
		# and set the default if necessary
		if {[string match "-*" $opt]} {
			# This is a documentation-only option, like "-C <dir>"
			set opthelp $opt
		} elseif {$colon eq ""} {
			# Boolean option
			lappend autosetup(options) $name

			# Check for override
			if {[dict exists $autosetup(options-defaults) $name]} {
				# A default was specified with options-defaults, so use it
				set value [dict get $autosetup(options-defaults) $name]
			}

			if {$value eq "1"} {
				set opthelp "--disable-$name"
			} else {
				set opthelp "--$name"
			}

			# Set the default
			if {$value eq ""} {
				set value 0
			}
			set defaultvalue $value
			dict set autosetup(optdefault) $name $defaultvalue

			if {[dict exists $autosetup(getopt) $name]} {
				# The option was specified by the user. Look at the last value.
				lassign [lindex [dict get $autosetup(getopt) $name] end] type setvalue
				if {$type eq "str"} {
					# Can we convert the value to a boolean?
					if {$setvalue in {1 enabled yes}} {
						set setvalue 1
					} elseif {$setvalue in {0 disabled no}} {
						set setvalue 0
					} else {
						user-error "Boolean option $name given as --$name=$setvalue"
					}
				}
				dict set autosetup(optset) $name $setvalue
				#puts "Found boolean option --$name=$setvalue"
			}
		} else {
			# String option.
			lappend autosetup(options) $name

			if {$equal ne "="} {
				# Was the option given as "name:value=default"?
				# If so, set $value to the display name and $defaultvalue to the default
				# (This is the preferred way to set a default value for a string option)
				if {[regexp {^([^=]+)=(.*)$} $value -> value defaultvalue]} {
					dict set autosetup(optdefault) $name $defaultvalue
				}
			}

			# Maybe override the default value
			if {[dict exists $autosetup(options-defaults) $name]} {
				# A default was specified with options-defaults, so use it
				set defaultvalue [dict get $autosetup(options-defaults) $name]
				dict set autosetup(optdefault) $name $defaultvalue
			} elseif {![info exists defaultvalue]} {
				# No default value was given by value=default or options-defaults
				# so use the value as the default when the plain option with no
				# value is given (.e.g. just --opt instead of --opt=value)
				set defaultvalue $value
			}

			if {$equal eq "="} {
				# String option with optional value
				set opthelp "--$name?=$value?"
			} else {
				# String option with required value
				set opthelp "--$name=$value"
			}

			# Get the values specified by the user
			if {[dict exists $autosetup(getopt) $name]} {
				set listvalue {}

				foreach pair [dict get $autosetup(getopt) $name] {
					lassign $pair type setvalue
					if {$type eq "bool" && $setvalue} {
						if {$equal ne "="} {
							user-error "Option --$name requires a value"
						}
						# If given as a boolean, use the default value
						set setvalue $defaultvalue
					}
					lappend listvalue $setvalue
				}

				#puts "Found string option --$name=$listvalue"
				dict set autosetup(optset) $name $listvalue
			}
		}

		# Now create the help for this option if appropriate
		if {[lindex $opts $i+1] eq "=>"} {
			set desc [lindex $opts $i+2]
			if {[info exists defaultvalue]} {
				set desc [string map [list @default@ $defaultvalue] $desc]
			}
			# A multi-line description
			lappend autosetup(optionhelp) [list $opthelp $autosetup(module) $desc]
			incr i 2
		}
	}
}

# @module-options optionlist
#
# Deprecated. Simply use 'options' from within a module.
proc module-options {opts} {
	options $opts
}

proc max {a b} {
	expr {$a > $b ? $a : $b}
}

proc options-wrap-desc {text length firstprefix nextprefix initial} {
	set len $initial
	set space $firstprefix
	foreach word [split $text] {
		set word [string trim $word]
		if {$word == ""} {
			continue
		}
		if {$len && [string length $space$word] + $len >= $length} {
			puts ""
			set len 0
			set space $nextprefix
		}
		incr len [string length $space$word]
		puts -nonewline $space$word
		set space " "
	}
	if {$len} {
		puts ""
	}
}

# Display options (from $autosetup(optionhelp)) for modules that match
# glob pattern $what
proc options-show {what} {
	set local 0
	# Determine the max option width
	set max 0
	foreach help $::autosetup(optionhelp) {
		lassign $help opt module desc
		if {![string match $what $module]} {
			continue
		}
		if {[string match =* $opt] || [string match \n* $desc]} {
			continue
		}
		set max [max $max [string length $opt]]
	}
	set indent [string repeat " " [expr {$max+4}]]
	set cols [getenv COLUMNS 80]
	catch {
		lassign [exec stty size] _ sttycols
		if {[string is integer -strict $sttycols]} {
			set cols $sttycols
		}
	}
	incr cols -1
	# Now output
	foreach help $::autosetup(optionhelp) {
		lassign $help opt module desc
		if {![string match $what $module]} {
			continue
		}
		if {$local == 0 && $module eq "auto.def"} {
			puts "Local Options:"
			incr local
		}
		if {[string match =* $opt]} {
			# Output a special heading line"
			puts [string range $opt 1 end]
			continue
		}
		puts -nonewline "  [format %-${max}s $opt]"
		if {[string match \n* $desc]} {
			# Output a pre-formatted help description as-is
			puts $desc
		} else {
			options-wrap-desc [string trim $desc] $cols "  " $indent [expr {$max+2}]
		}
	}
}

# @options optionspec
#
# Specifies configuration-time options which may be selected by the user
# and checked with 'opt-str' and 'opt-bool'. '$optionspec' contains a series
# of options specifications separated by newlines, as follows:
#
# A boolean option is of the form:
#
## name[=0|1]  => "Description of this boolean option"
#
# The default is 'name=0', meaning that the option is disabled by default.
# If 'name=1' is used to make the option enabled by default, the description should reflect
# that with text like "Disable support for ...".
#
# An argument option (one which takes a parameter) is of one of the following forms:
#
## name:value         => "Description of this option"
## name:value=default => "Description of this option with a default value"
## name:=value        => "Description of this option with an optional value"
#
# If the 'name:value' form is used, the value must be provided with the option (as '--name=myvalue').
# If the 'name:value=default' form is used, the option has the given default value even if not
# specified by the user.
# If the 'name:=value' form is used, the value is optional and the given value is used
# if it is not provided.
#
# The description may contain '@default@', in which case it will be replaced with the default
# value for the option (taking into account defaults specified with 'options-defaults'.
#
# Undocumented options are also supported by omitting the '=> description'.
# These options are not displayed with '--help' and can be useful for internal options or as aliases.
#
# For example, '--disable-lfs' is an alias for '--disable=largefile':
#
## lfs=1 largefile=1 => "Disable large file support"
#
proc options {optlist} {
	global autosetup

	options-add $optlist

	if {$autosetup(showhelp)} {
		# If --help, stop now to show help
		return -code break
	}

	if {$autosetup(module) eq "auto.def"} {
		# Check for invalid options
		if {[opt-bool option-checking]} {
			foreach o [dict keys $::autosetup(getopt)] {
				if {$o ni $::autosetup(options)} {
					user-error "Unknown option --$o"
				}
			}
		}
	}
}

# @options-defaults dictionary
#
# Specifies a dictionary of options and a new default value for each of those options.
# Use before any 'use' statements in 'auto.def' to change the defaults for
# subsequently included modules.
proc options-defaults {dict} {
	foreach {n v} $dict {
		dict set ::autosetup(options-defaults) $n $v
	}
}

proc config_guess {} {
	if {[file-isexec $::autosetup(dir)/autosetup-config.guess]} {
		if {[catch {exec-with-stderr sh $::autosetup(dir)/autosetup-config.guess} alias]} {
			user-error $alias
		}
		return $alias
	} else {
		configlog "No autosetup-config.guess, so using uname"
		string tolower [exec uname -p]-unknown-[exec uname -s][exec uname -r]
	}
}

proc config_sub {alias} {
	if {[file-isexec $::autosetup(dir)/autosetup-config.sub]} {
		if {[catch {exec-with-stderr sh $::autosetup(dir)/autosetup-config.sub $alias} alias]} {
			user-error $alias
		}
	}
	return $alias
}

# @section Variable Definitions (defines)

# @define name ?value=1?
#
# Defines the named variable to the given value.
# These (name, value) pairs represent the results of the configuration check
# and are available to be subsequently checked, modified and substituted.
#
proc define {name {value 1}} {
	set ::define($name) $value
	#dputs "$name <= $value"
}

# @define-push {name ...} script
#
# Save the values of the given defines, evaluation the script, then restore.
# For example, to avoid updating AS_FLAGS and AS_CXXFLAGS:
## define-push {AS_CFLAGS AS_CXXFLAGS} {
##   cc-check-flags -Wno-error
## }
proc define-push {names script} {
	array set unset {}
	foreach name $names {
		if {[is-defined $name]} {
			set save($name) [get-define $name]
		} else {
			set unset($name) 1
		}
	}
	uplevel 1 $script
	array set ::define [array get save]
	foreach name [array names unset] {
		unset -nocomplain ::define($name)
	}
}

# @undefine name
#
# Undefine the named variable.
#
proc undefine {name} {
	unset -nocomplain ::define($name)
	#dputs "$name <= <undef>"
}

# @define-append name value ...
#
# Appends the given value(s) to the given "defined" variable.
# If the variable is not defined or empty, it is set to '$value'.
# Otherwise the value is appended, separated by a space.
# Any extra values are similarly appended.
#
# Note that define-append is not designed to add values containing spaces.
# If values may contain spaces, consider define-append-argv instead.
#
proc define-append {name args} {
	if {[get-define $name ""] ne ""} {
		foreach arg $args {
			if {$arg eq ""} {
				continue
			}
			append ::define($name) " " $arg
		}
	} else {
		set ::define($name) [join $args]
	}
	#dputs "$name += [join $args] => $::define($name)"
}

# @define-append-argv name value ...
#
# Similar to define-append except designed to construct shell command
# lines, including correct handling of parameters with spaces.
#
# Each non-empty value is quoted if necessary and then appended to the given variable
# if it does not already exist.
#
proc define-append-argv {name args} {
	set seen {}
	set new {}
	foreach val [list {*}[get-define $name ""] {*}$args] {
		if {$val ne {} && ![dict exists $seen $val]} {
			lappend new [quote-if-needed $val]
			dict set seen $val 1
		}
	}
	set ::define($name) [join $new " "]
	#dputs "$name += [join $args] => $::define($name)"
}

# @get-define name ?default=0?
#
# Returns the current value of the "defined" variable, or '$default'
# if not set.
#
proc get-define {name {default 0}} {
	if {[info exists ::define($name)]} {
		#dputs "$name => $::define($name)"
		return $::define($name)
	}
	#dputs "$name => $default"
	return $default
}

# @is-defined name
#
# Returns 1 if the given variable is defined.
#
proc is-defined {name} {
	info exists ::define($name)
}

# @is-define-set name
#
# Returns 1 if the given variable is defined and is set
# to a value other than "" or 0
#
proc is-define-set {name} {
	if {[get-define $name] in {0 ""}} {
		return 0
	}
	return 1
}

# @all-defines
#
# Returns a dictionary (name, value list) of all defined variables.
#
# This is suitable for use with 'dict', 'array set' or 'foreach'
# and allows for arbitrary processing of the defined variables.
#
proc all-defines {} {
	array get ::define
}

# @section Environment/Helpers

# @get-env name default
#
# If '$name' was specified on the command line, return it.
# Otherwise if '$name' was set in the environment, return it.
# Otherwise return '$default'.
#
proc get-env {name default} {
	if {[dict exists $::autosetup(cmdline) $name]} {
		return [dict get $::autosetup(cmdline) $name]
	}
	getenv $name $default
}

# @env-is-set name
#
# Returns 1 if '$name' was specified on the command line or in the environment.
# Note that an empty environment variable is not considered to be set.
#
proc env-is-set {name} {
	if {[dict exists $::autosetup(cmdline) $name]} {
		return 1
	}
	if {[getenv $name ""] ne ""} {
		return 1
	}
	return 0
}

# @readfile filename ?default=""?
#
# Return the contents of the file, without the trailing newline.
# If the file doesn't exist or can't be read, returns '$default'.
#
proc readfile {filename {default_value ""}} {
	set result $default_value
	catch {
		set f [open $filename]
		set result [read -nonewline $f]
		close $f
	}
	return $result
}

# @writefile filename value
#
# Creates the given file containing '$value'.
# Does not add an extra newline.
#
proc writefile {filename value} {
	set f [open $filename w]
	puts -nonewline $f $value
	close $f
}

proc quote-if-needed {str} {
	if {[string match {*[\" ]*} $str]} {
		return \"[string map [list \" \\" \\ \\\\] $str]\"
	}
	return $str
}

proc quote-argv {argv} {
	set args {}
	foreach arg $argv {
		lappend args [quote-if-needed $arg]
	}
	join $args
}

# @list-non-empty list
#
# Returns a copy of the given list with empty elements removed
proc list-non-empty {list} {
	set result {}
	foreach p $list {
		if {$p ne ""} {
			lappend result $p
		}
	}
	return $result
}

# @section Paths, Searching

# @find-executable-path name
#
# Searches the path for an executable with the given name.
# Note that the name may include some parameters, e.g. 'cc -mbig-endian',
# in which case the parameters are ignored.
# Returns the full path to the executable if found, or "" if not found.
#
proc find-executable-path {name} {
	# Ignore any parameters
	set name [lindex $name 0]
	# The empty string is never a valid executable
	if {$name ne ""} {
		foreach p [split-path] {
			dputs "Looking for $name in $p"
			set exec [file join $p $name]
			if {[file-isexec $exec]} {
				dputs "Found $name -> $exec"
				return $exec
			}
		}
	}
	return {}
}

# @find-executable name
#
# Searches the path for an executable with the given name.
# Note that the name may include some parameters, e.g. 'cc -mbig-endian',
# in which case the parameters are ignored.
# Returns 1 if found, or 0 if not.
#
proc find-executable {name} {
	if {[find-executable-path $name] eq {}} {
		return 0
	}
	return 1
}

# @find-an-executable ?-required? name ...
#
# Given a list of possible executable names,
# searches for one of these on the path.
#
# Returns the name found, or "" if none found.
# If the first parameter is '-required', an error is generated
# if no executable is found.
#
proc find-an-executable {args} {
	set required 0
	if {[lindex $args 0] eq "-required"} {
		set args [lrange $args 1 end]
		incr required
	}
	foreach name $args {
		if {[find-executable $name]} {
			return $name
		}
	}
	if {$required} {
		if {[llength $args] == 1} {
			user-error "failed to find: [join $args]"
		} else {
			user-error "failed to find one of: [join $args]"
		}
	}
	return ""
}

# @section Logging, Messages and Errors

# @configlog msg
#
# Writes the given message to the configuration log, 'config.log'.
#
proc configlog {msg} {
	if {![info exists ::autosetup(logfh)]} {
		set ::autosetup(logfh) [open config.log w]
	}
	puts $::autosetup(logfh) $msg
}

# @msg-checking msg
#
# Writes the message with no newline to stdout.
#
proc msg-checking {msg} {
	if {$::autosetup(msg-quiet) == 0} {
		maybe-show-timestamp
		puts -nonewline $msg
		set ::autosetup(msg-checking) 1
	}
}

# @msg-result msg
#
# Writes the message to stdout.
#
proc msg-result {msg} {
	if {$::autosetup(msg-quiet) == 0} {
		maybe-show-timestamp
		puts $msg
		set ::autosetup(msg-checking) 0
		show-notices
	}
}

# @msg-quiet command ...
#
# 'msg-quiet' evaluates it's arguments as a command with output
# from 'msg-checking' and 'msg-result' suppressed.
#
# This is useful if a check needs to run a subcheck which isn't
# of interest to the user.
proc msg-quiet {args} {
	incr ::autosetup(msg-quiet)
	set rc [uplevel 1 $args]
	incr ::autosetup(msg-quiet) -1
	return $rc
}

# Will be overridden by 'use misc'
proc error-stacktrace {msg} {
	return $msg
}

proc error-location {msg} {
	return $msg
}

##################################################################
#
# Debugging output
#
proc dputs {msg} {
	if {$::autosetup(debug)} {
		puts $msg
	}
}

##################################################################
#
# User and system warnings and errors
#
# Usage errors such as wrong command line options

# @user-error msg
#
# Indicate incorrect usage to the user, including if required components
# or features are not found.
# 'autosetup' exits with a non-zero return code.
#
proc user-error {msg} {
	show-notices
	puts stderr "Error: $msg"
	puts stderr "Try: '[file tail $::autosetup(exe)] --help' for options"
	exit 1
}

# @user-notice msg
#
# Output the given message to stderr.
#
proc user-notice {msg} {
	lappend ::autosetup(notices) $msg
}

# Incorrect usage in the auto.def file. Identify the location.
proc autosetup-error {msg} {
	autosetup-full-error [error-location $msg]
}

# Like autosetup-error, except $msg is the full error message.
proc autosetup-full-error {msg} {
	show-notices
	puts stderr $msg
	exit 1
}

proc show-notices {} {
	if {$::autosetup(msg-checking)} {
		puts ""
		set ::autosetup(msg-checking) 0
	}
	flush stdout
	if {[info exists ::autosetup(notices)]} {
		puts stderr [join $::autosetup(notices) \n]
		unset ::autosetup(notices)
	}
}

proc maybe-show-timestamp {} {
	if {$::autosetup(msg-timing) && $::autosetup(msg-checking) == 0} {
		puts -nonewline [format {[%6.2f] } [expr {([clock millis] - $::autosetup(start)) % 10000 / 1000.0}]]
	}
}

# @autosetup-require-version required
#
# Checks the current version of 'autosetup' against '$required'.
# A fatal error is generated if the current version is less than that required.
#
proc autosetup-require-version {required} {
	if {[compare-versions $::autosetup(version) $required] < 0} {
		user-error "autosetup version $required is required, but this is $::autosetup(version)"
	}
}

proc autosetup_version {} {
	return "autosetup v$::autosetup(version)"
}

##################################################################
#
# Directory/path handling
#

proc realdir {dir} {
	set oldpwd [pwd]
	cd $dir
	set pwd [pwd]
	cd $oldpwd
	return $pwd
}

# Follow symlinks until we get to something which is not a symlink
proc realpath {path} {
	while {1} {
		if {[catch {
			set path [file readlink $path]
		}]} {
			# Not a link
			break
		}
	}
	return $path
}

# Convert absolute path, $path into a path relative
# to the given directory (or the current dir, if not given).
#
proc relative-path {path {pwd {}}} {
	set diff 0
	set same 0
	set newf {}
	set prefix {}
	set path [file-normalize $path]
	if {$pwd eq ""} {
		set pwd [pwd]
	} else {
		set pwd [file-normalize $pwd]
	}

	if {$path eq $pwd} {
		return .
	}

	# Try to make the filename relative to the current dir
	foreach p [split $pwd /] f [split $path /] {
		if {$p ne $f} {
			incr diff
		} elseif {!$diff} {
			incr same
		}
		if {$diff} {
			if {$p ne ""} {
				# Add .. for sibling or parent dir
				lappend prefix ..
			}
			if {$f ne ""} {
				lappend newf $f
			}
		}
	}
	if {$same == 1 || [llength $prefix] > 3} {
		return $path
	}

	file join [join $prefix /] [join $newf /]
}

# Add filename as a dependency to rerun autosetup
# The name will be normalised (converted to a full path)
#
proc autosetup_add_dep {filename} {
	lappend ::autosetup(deps) [file-normalize $filename]
}

# @section Modules Support

##################################################################
#
# Library module support
#

# @use module ...
#
# Load the given library modules.
# e.g. 'use cc cc-shared'
#
# Note that module 'X' is implemented in either 'autosetup/X.tcl'
# or 'autosetup/X/init.tcl'
#
# The latter form is useful for a complex module which requires additional
# support file. In this form, '$::usedir' is set to the module directory
# when it is loaded.
#
proc use {args} {
	global autosetup libmodule modsource

	set dirs [list $autosetup(libdir)]
	if {[info exists autosetup(srcdir)]} {
		lappend dirs $autosetup(srcdir)/autosetup
	}
	foreach m $args {
		if {[info exists libmodule($m)]} {
			continue
		}
		set libmodule($m) 1

		if {[info exists modsource(${m}.tcl)]} {
			autosetup_load_module $m eval $modsource(${m}.tcl)
		} else {
			set locs [list ${m}.tcl ${m}/init.tcl]
			set found 0
			foreach dir $dirs {
				foreach loc $locs {
					set source $dir/$loc
					if {[file exists $source]} {
						incr found
						break
					}
				}
				if {$found} {
					break
				}
			}
			if {$found} {
				# For the convenience of the "use" source, point to the directory
				# it is being loaded from
				set ::usedir [file dirname $source]
				autosetup_load_module $m source $source
				autosetup_add_dep $source
			} else {
				autosetup-error "use: No such module: $m"
			}
		}
	}
}

proc autosetup_load_auto_modules {} {
	global autosetup modsource
	# First load any embedded auto modules
	foreach mod [array names modsource *.auto] {
		autosetup_load_module $mod eval $modsource($mod)
	}
	# Now any external auto modules
	foreach file [glob -nocomplain $autosetup(libdir)/*.auto $autosetup(libdir)/*/*.auto] {
		autosetup_load_module [file tail $file] source $file
	}
}

# Load module source in the global scope by executing the given command
proc autosetup_load_module {module args} {
	global autosetup
	set prev $autosetup(module)
	set autosetup(module) $module

	if {[catch [list uplevel #0 $args] msg opts] ni {0 2 3}} {
		autosetup-full-error [error-dump $msg $opts $::autosetup(debug)]
	}
	set autosetup(module) $prev
}

# Initial settings
set autosetup(exe) $::argv0
set autosetup(istcl) 1
set autosetup(start) [clock millis]
set autosetup(installed) 0
set autosetup(sysinstall) 0
set autosetup(msg-checking) 0
set autosetup(msg-quiet) 0
set autosetup(inittypes) {}
set autosetup(module) autosetup

# Embedded modules are inserted below here
set autosetup(installed) 1
set autosetup(sysinstall) 0
# ----- @module asciidoc-formatting.tcl -----

set modsource(asciidoc-formatting.tcl) {
# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which provides text formatting
# asciidoc format

use formatting

proc para {text} {
    regsub -all "\[ \t\n\]+" [string trim $text] " "
}
proc title {text} {
    underline [para $text] =
    nl
}
proc p {text} {
    puts [para $text]
    nl
}
proc code {text} {
    foreach line [parse_code_block $text] {
        puts "    $line"
    }
    nl
}
proc codelines {lines} {
    foreach line $lines {
        puts "    $line"
    }
    nl
}
proc nl {} {
    puts ""
}
proc underline {text char} {
    regexp "^(\[ \t\]*)(.*)" $text -> indent words
    puts $text
    puts $indent[string repeat $char [string length $words]]
}
proc section {text} {
    underline "[para $text]" -
    nl
}
proc subsection {text} {
    underline "$text" ~
    nl
}
proc bullet {text} {
    puts "* [para $text]"
}
proc indent {text} {
    puts " :: "
    puts [para $text]
}
proc defn {first args} {
    set sep ""
    if {$first ne ""} {
        puts "${first}::"
    } else {
        puts " :: "
    }
    set defn [string trim [join $args \n]]
    regsub -all "\n\n" $defn "\n ::\n" defn
    puts $defn
}
}

# ----- @module formatting.tcl -----

set modsource(formatting.tcl) {
# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which provides common text formatting

# This is designed for documentation which looks like:
# code {...}
# or
# code {
#    ...
#    ...
# }
# In the second case, we need to work out the indenting
# and strip it from all lines but preserve the remaining indenting.
# Note that all lines need to be indented with the same initial
# spaces/tabs.
#
# Returns a list of lines with the indenting removed.
#
proc parse_code_block {text} {
    # If the text begins with newline, take the following text,
    # otherwise just return the original
    if {![regexp "^\n(.*)" $text -> text]} {
        return [list [string trim $text]]
    }

    # And trip spaces off the end
    set text [string trimright $text]

    set min 100
    # Examine each line to determine the minimum indent
    foreach line [split $text \n] {
        if {$line eq ""} {
            # Ignore empty lines for the indent calculation
            continue
        }
        regexp "^(\[ \t\]*)" $line -> indent
        set len [string length $indent]
        if {$len < $min} {
            set min $len
        }
    }

    # Now make a list of lines with this indent removed
    set lines {}
    foreach line [split $text \n] {
        lappend lines [string range $line $min end]
    }

    # Return the result
    return $lines
}
}

# ----- @module getopt.tcl -----

set modsource(getopt.tcl) {
# Copyright (c) 2006 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Simple getopt module

# Parse everything out of the argv list which looks like an option
# Everything which doesn't look like an option, or is after --, is left unchanged
# Understands --enable-xxx as a synonym for --xxx to enable the boolean option xxx.
# Understands --disable-xxx to disable the boolean option xxx.
#
# The returned value is a dictionary keyed by option name
# Each value is a list of {type value} ... where type is "bool" or "str".
# The value for a boolean option is 0 or 1. The value of a string option is the value given.
proc getopt {argvname} {
	upvar $argvname argv
	set nargv {}

	set opts {}

	for {set i 0} {$i < [llength $argv]} {incr i} {
		set arg [lindex $argv $i]

		#dputs arg=$arg

		if {$arg eq "--"} {
			# End of options
			incr i
			lappend nargv {*}[lrange $argv $i end]
			break
		}

		if {[regexp {^--([^=][^=]+)=(.*)$} $arg -> name value]} {
			# --name=value
			dict lappend opts $name [list str $value]
		} elseif {[regexp {^--(enable-|disable-)?([^=]*)$} $arg -> prefix name]} {
			if {$prefix in {enable- ""}} {
				set value 1
			} else {
				set value 0
			}
			dict lappend opts $name [list bool $value]
		} else {
			lappend nargv $arg
		}
	}

	#puts "getopt: argv=[join $argv] => [join $nargv]"
	#array set getopt $opts
	#parray getopt

	set argv $nargv

	return $opts
}
}

# ----- @module help.tcl -----

set modsource(help.tcl) {
# Copyright (c) 2010 WorkWare Systems http://workware.net.au/
# All rights reserved

# Module which provides usage, help and the command reference

proc autosetup_help {what} {
    use_pager

    puts "Usage: [file tail $::autosetup(exe)] \[options\] \[settings\]\n"
    puts "This is [autosetup_version], a build environment \"autoconfigurator\""
    puts "See the documentation online at https://msteveb.github.io/autosetup/\n"

    if {$what in {all local}} {
        # Need to load auto.def now
        if {[file exists $::autosetup(autodef)]} {
            # Load auto.def as module "auto.def"
            autosetup_load_module auto.def source $::autosetup(autodef)
        }
        if {$what eq "all"} {
            set what *
        } else {
            set what auto.def
        }
    } else {
        use $what
        puts "Options for module $what:"
    }
    options-show $what
    exit 0
}

proc autosetup_show_license {} {
    global modsource autosetup
    use_pager

    if {[info exists modsource(LICENSE)]} {
        puts $modsource(LICENSE)
        return
    }
    foreach dir [list $autosetup(libdir) $autosetup(srcdir)] {
        set path [file join $dir LICENSE]
        if {[file exists $path]} {
            puts [readfile $path]
            return
        }
    }
    puts "LICENSE not found"
}

# If not already paged and stdout is a tty, pipe the output through the pager
# This is done by reinvoking autosetup with --nopager added
proc use_pager {} {
    if {![opt-bool nopager] && [getenv PAGER ""] ne "" && [isatty? stdin] && [isatty? stdout]} {
        if {[catch {
            exec [info nameofexecutable] $::argv0 --nopager {*}$::argv |& {*}[getenv PAGER] >@stdout <@stdin 2>@stderr
        } msg opts] == 1} {
            if {[dict get $opts -errorcode] eq "NONE"} {
                # an internal/exec error
                puts stderr $msg
                exit 1
            }
        }
        exit 0
    }
}

# Outputs the autosetup references in one of several formats
proc autosetup_reference {{type text}} {

    use_pager

    switch -glob -- $type {
        wiki {use wiki-formatting}
        ascii* {use asciidoc-formatting}
        md - markdown {use markdown-formatting}
        default {use text-formatting}
    }

    title "[autosetup_version] -- Command Reference"

    section {Introduction}

    p {
        See https://msteveb.github.io/autosetup/ for the online documentation for 'autosetup'.
        This documentation can also be accessed locally with `autosetup --ref`.
    }

    p {
        'autosetup' provides a number of built-in commands which
        are documented below. These may be used from 'auto.def' to test
        for features, define variables, create files from templates and
        other similar actions.
    }

    automf_command_reference

    exit 0
}

proc autosetup_output_block {type lines} {
    if {[llength $lines]} {
        switch $type {
            section {
                section $lines
            }
            subsection {
                subsection $lines
            }
            code {
                codelines $lines
            }
            p {
                p [join $lines]
            }
            list {
                foreach line $lines {
                    bullet $line
                }
                nl
            }
        }
    }
}

# Generate a command reference from inline documentation
proc automf_command_reference {} {
    lappend files $::autosetup(prog)
    lappend files {*}[lsort [glob -nocomplain $::autosetup(libdir)/*.tcl]]

    # We want to process all non-module files before module files
    # and then modules in alphabetical order.
    # So examine all files and extract docs into doc($modulename) and doc(_core_)
    #
    # Each entry is a list of {type data} where $type is one of: section, subsection, code, list, p
    # and $data is a string for section, subsection or a list of text lines for other types.

    # XXX: Should commands be in alphabetical order too? Currently they are in file order.

    set doc(_core_) {}
    lappend doc(_core_) [list section "Core Commands"]

    foreach file $files {
        set modulename [file rootname [file tail $file]]
        set current _core_
        set f [open $file]
        while {![eof $f]} {
            set line [gets $f]

            if {[regexp {^#.*@section (.*)$} $line -> section]} {
                lappend doc($current) [list section $section]
				continue
			}

            # Find embedded module names
            if {[regexp {^#.*@module ([^ ]*)} $line -> modulename]} {
                continue
            }

            # Find lines starting with "# @*" and continuing through the remaining comment lines
            if {![regexp {^# @(.*)} $line -> cmd]} {
                continue
            }

            # Synopsis or command?
            if {$cmd eq "synopsis:"} {
                set current $modulename
                lappend doc($current) [list section "Module: $modulename"]
			} else {
                lappend doc($current) [list subsection $cmd]
            }

            set lines {}
            set type p

            # Now the description
            while {![eof $f]} {
                set line [gets $f]

                if {![regexp {^#(#)? ?(.*)} $line -> hash cmd]} {
                    break
                }
                if {$hash eq "#"} {
                    set t code
                } elseif {[regexp {^- (.*)} $cmd -> cmd]} {
                    set t list
                } else {
                    set t p
                }

                #puts "hash=$hash, oldhash=$oldhash, lines=[llength $lines], cmd=$cmd"

                if {$t ne $type || $cmd eq ""} {
                    # Finish the current block
                    lappend doc($current) [list $type $lines]
                    set lines {}
                    set type $t
                }
                if {$cmd ne ""} {
                    lappend lines $cmd
                }
            }

            lappend doc($current) [list $type $lines]
        }
        close $f
    }

    # Now format and output the results

    # _core_ will sort first
    foreach module [lsort [array names doc]] {
        foreach item $doc($module) {
            autosetup_output_block {*}$item
        }
    }
}
}

# ----- @module init.tcl -----

set modsource(init.tcl) {
# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module to help create auto.def and configure

proc autosetup_init {type} {
	set help 0
	if {$type in {? help}} {
		incr help
	} elseif {![dict exists $::autosetup(inittypes) $type]} {
		puts "Unknown type, --init=$type"
		incr help
	}
	if {$help} {
		puts "Use one of the following types (e.g. --init=make)\n"
		foreach type [lsort [dict keys $::autosetup(inittypes)]] {
			lassign [dict get $::autosetup(inittypes) $type] desc
			# XXX: Use the options-show code to wrap the description
			puts [format "%-10s %s" $type $desc]
		}
		return
	}
	lassign [dict get $::autosetup(inittypes) $type] desc script

	puts "Initialising $type: $desc\n"

	# All initialisations happens in the top level srcdir
	cd $::autosetup(srcdir)

	uplevel #0 $script
}

proc autosetup_add_init_type {type desc script} {
	dict set ::autosetup(inittypes) $type [list $desc $script]
}

# This is for in creating build-system init scripts
#
# If the file doesn't exist, create it containing $contents
# If the file does exist, only overwrite if --force is specified.
#
proc autosetup_check_create {filename contents} {
	if {[file exists $filename]} {
		if {!$::autosetup(force)} {
			puts "I see $filename already exists."
			return
		} else {
			puts "I will overwrite the existing $filename because you used --force."
		}
	} else {
		puts "I don't see $filename, so I will create it."
	}
	writefile $filename $contents
}
}

# ----- @module install.tcl -----

set modsource(install.tcl) {
# Copyright (c) 2006-2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which can install autosetup

# autosetup(installed)=1 means that autosetup is not running from source
# autosetup(sysinstall)=1 means that autosetup is running from a sysinstall version
# shared=1 means that we are trying to do a sysinstall. This is only possible from the development source.

proc autosetup_install {dir {shared 0}} {
	global autosetup
	if {$shared} {
		if {$autosetup(installed) || $autosetup(sysinstall)} {
			user-error "Can only --sysinstall from development sources"
		}
	} elseif {$autosetup(installed) && !$autosetup(sysinstall)} {
		user-error "Can't --install from project install"
	}

	if {$autosetup(sysinstall)} {
		# This is the sysinstall version, so install just uses references
		cd $dir

		puts "[autosetup_version] creating configure to use system-installed autosetup"
		autosetup_create_configure 1
		puts "Creating autosetup/README.autosetup"
		file mkdir autosetup
		autosetup_install_readme autosetup/README.autosetup 1
		return
	}

	if {[catch {
		if {$shared} {
			set target $dir/bin/autosetup
			set installedas $target
		} else {
			if {$dir eq "."} {
				set installedas autosetup
			} else {
				set installedas $dir/autosetup
			}
			cd $dir
			file mkdir autosetup
			set target autosetup/autosetup
		}
		set targetdir [file dirname $target]
		file mkdir $targetdir

		set f [open $target w]

		set publicmodules {}

		# First the main script, but only up until "CUT HERE"
		set in [open $autosetup(dir)/autosetup]
		while {[gets $in buf] >= 0} {
			if {$buf ne "##-- CUT HERE --##"} {
				puts $f $buf
				continue
			}

			# Insert the static modules here
			# i.e. those which don't contain @synopsis:
			# All modules are inserted if $shared is set
			puts $f "set autosetup(installed) 1"
			puts $f "set autosetup(sysinstall) $shared"
			foreach file [lsort [glob $autosetup(libdir)/*.{tcl,auto}]] {
				set modname [file tail $file]
				set ext [file ext $modname]
				set buf [readfile $file]
				if {!$shared} {
					if {$ext eq ".auto" || [string match "*\n# @synopsis:*" $buf]} {
						lappend publicmodules $file
						continue
					}
				}
				dputs "install: importing lib/[file tail $file]"
				puts $f "# ----- @module $modname -----"
				puts $f "\nset modsource($modname) \{"
				puts $f $buf
				puts $f "\}\n"
			}
			if {$shared} {
				foreach {srcname destname} [list $autosetup(libdir)/README.autosetup-lib README.autosetup \
						$autosetup(srcdir)/LICENSE LICENSE] {
					dputs "install: importing $srcname as $destname"
					puts $f "\nset modsource($destname) \\\n[list [readfile $srcname]\n]\n"
				}
			}
		}
		close $in
		close $f
		catch {exec chmod 755 $target}

		set installfiles {autosetup-config.guess autosetup-config.sub autosetup-test-tclsh}
		set removefiles {}

		if {!$shared} {
			autosetup_install_readme $targetdir/README.autosetup 0

			# Install public modules
			foreach file $publicmodules {
				set tail [file tail $file]
				autosetup_install_file $file $targetdir/$tail
			}
			lappend installfiles jimsh0.c autosetup-find-tclsh LICENSE
			lappend removefiles config.guess config.sub test-tclsh find-tclsh
		} else {
			lappend installfiles {sys-find-tclsh autosetup-find-tclsh}
		}

		# Install support files
		foreach fileinfo $installfiles {
			if {[llength $fileinfo] == 2} {
				lassign $fileinfo source dest
			} else {
				lassign $fileinfo source
				set dest $source
			}
			autosetup_install_file $autosetup(dir)/$source $targetdir/$dest
		}

		# Remove obsolete files
		foreach file $removefiles {
			if {[file exists $targetdir/$file]} {
				file delete $targetdir/$file
			}
		}
	} error]} {
		user-error "Failed to install autosetup: $error"
	}
	if {$shared} {
		set type "system"
	} else {
		set type "local"
	}
	puts "Installed $type [autosetup_version] to $installedas"

	if {!$shared} {
		# Now create 'configure' if necessary
		autosetup_create_configure 0
	}
}

proc autosetup_create_configure {shared} {
	if {[file exists configure]} {
		if {!$::autosetup(force)} {
			# Could this be an autosetup configure?
			if {![string match "*\nWRAPPER=*" [readfile configure]]} {
				puts "I see configure, but not created by autosetup, so I won't overwrite it."
				puts "Remove it or use --force to overwrite."
				return
			}
		} else {
			puts "I will overwrite the existing configure because you used --force."
		}
	} else {
		puts "I don't see configure, so I will create it."
	}
	if {$shared} {
		writefile configure \
{#!/bin/sh
WRAPPER="$0"; export WRAPPER; "autosetup" "$@"
}
	} else {
		writefile configure \
{#!/bin/sh
dir="`dirname "$0"`/autosetup"
#@@INITCHECK@@#
WRAPPER="$0"; export WRAPPER; exec "`"$dir/autosetup-find-tclsh"`" "$dir/autosetup" "$@"
}
	}
	catch {exec chmod 755 configure}
}

# Append the contents of $file to filehandle $f
proc autosetup_install_append {f file} {
	dputs "install: include $file"
	set in [open $file]
	puts $f [read $in]
	close $in
}

proc autosetup_install_file {source target} {
	dputs "install: $source => $target"
	if {![file exists $source]} {
		error "Missing installation file '$source'"
	}
	writefile $target [readfile $source]\n
	# If possible, copy the file mode
	file stat $source stat
	set mode [format %o [expr {$stat(mode) & 0x1ff}]]
	catch {exec chmod $mode $target}
}

proc autosetup_install_readme {target sysinstall} {
	set readme "README.autosetup created by [autosetup_version]\n\n"
	if {$sysinstall} {
		append readme \
{This is the autosetup directory for a system install of autosetup.
Loadable modules can be added here.
}
	} else {
		append readme \
{This is the autosetup directory for a local install of autosetup.
It contains autosetup, support files and loadable modules.
}
}

	append readme {
*.tcl files in this directory are optional modules which
can be loaded with the 'use' directive.

*.auto files in this directory are auto-loaded.

For more information, see https://msteveb.github.io/autosetup/
}
	dputs "install: autosetup/README.autosetup"
	writefile $target $readme
}
}

# ----- @module markdown-formatting.tcl -----

set modsource(markdown-formatting.tcl) {
# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which provides text formatting
# markdown format (kramdown syntax)

use formatting

proc para {text} {
    regsub -all "\[ \t\n\]+" [string trim $text] " " text
    regsub -all {([^a-zA-Z])'([^']*)'} $text {\1**`\2`**} text
    regsub -all {^'([^']*)'} $text {**`\1`**} text
    regsub -all {(http[^ \t\n]*)} $text {[\1](\1)} text
    return $text
}
proc title {text} {
    underline [para $text] =
    nl
}
proc p {text} {
    puts [para $text]
    nl
}
proc codelines {lines} {
    puts "~~~~~~~~~~~~"
    foreach line $lines {
        puts $line
    }
    puts "~~~~~~~~~~~~"
    nl
}
proc code {text} {
    puts "~~~~~~~~~~~~"
    foreach line [parse_code_block $text] {
        puts $line
    }
    puts "~~~~~~~~~~~~"
    nl
}
proc nl {} {
    puts ""
}
proc underline {text char} {
    regexp "^(\[ \t\]*)(.*)" $text -> indent words
    puts $text
    puts $indent[string repeat $char [string length $words]]
}
proc section {text} {
    underline "[para $text]" -
    nl
}
proc subsection {text} {
    puts "### `$text`"
    nl
}
proc bullet {text} {
    puts "* [para $text]"
}
proc defn {first args} {
    puts "^"
    set defn [string trim [join $args \n]]
    if {$first ne ""} {
        puts "**${first}**"
        puts -nonewline ": "
        regsub -all "\n\n" $defn "\n: " defn
    }
    puts "$defn"
}
}

# ----- @module misc.tcl -----

set modsource(misc.tcl) {
# Copyright (c) 2007-2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module containing misc procs useful to modules
# Largely for platform compatibility

set autosetup(istcl) [info exists ::tcl_library]
set autosetup(iswin) [string equal windows $tcl_platform(platform)]

if {$autosetup(iswin)} {
	# mingw/windows separates $PATH with semicolons
	# and doesn't have an executable bit
	proc split-path {} {
		split [getenv PATH .] {;}
	}
	proc file-isexec {exec} {
		# Basic test for windows. We ignore .bat
		if {[file isfile $exec] || [file isfile $exec.exe]} {
			return 1
		}
		return 0
	}
} else {
	# unix separates $PATH with colons and has and executable bit
	proc split-path {} {
		split [getenv PATH .] :
	}
	proc file-isexec {exec} {
		file executable $exec
	}
}

# Assume that exec can return stdout and stderr
proc exec-with-stderr {args} {
	exec {*}$args 2>@1
}

if {$autosetup(istcl)} {
	# Tcl doesn't have the env command
	proc getenv {name args} {
		if {[info exists ::env($name)]} {
			return $::env($name)
		}
		if {[llength $args]} {
			return [lindex $args 0]
		}
		return -code error "environment variable \"$name\" does not exist"
	}
	proc isatty? {channel} {
		dict exists [fconfigure $channel] -xchar
	}
	# Jim-compatible stacktrace using info frame
	proc stacktrace {} {
		set stacktrace {}
		# 2 to skip the current frame
		for {set i 2} {$i < [info frame]} {incr i} {
			set frame [info frame -$i]
			if {[dict exists $frame file]} {
				# We don't need proc, so use ""
				lappend stacktrace "" [dict get $frame file] [dict get $frame line]
			}
		}
		return $stacktrace
	}
} else {
	if {$autosetup(iswin)} {
		# On Windows, backslash convert all environment variables
		# (Assume that Tcl does this for us)
		proc getenv {name args} {
			string map {\\ /} [env $name {*}$args]
		}
	} else {
		# Jim on unix is simple
		alias getenv env
	}
	proc isatty? {channel} {
		set tty 0
		catch {
			# isatty is a recent addition to Jim Tcl
			set tty [$channel isatty]
		}
		return $tty
	}
}

# In case 'file normalize' doesn't exist
#
proc file-normalize {path} {
	if {[catch {file normalize $path} result]} {
		if {$path eq ""} {
			return ""
		}
		set oldpwd [pwd]
		if {[file isdir $path]} {
			cd $path
			set result [pwd]
		} else {
			cd [file dirname $path]
			set result [file join [pwd] [file tail $path]]
		}
		cd $oldpwd
	}
	return $result
}

# If everything is working properly, the only errors which occur
# should be generated in user code (e.g. auto.def).
# By default, we only want to show the error location in user code.
# We use [info frame] to achieve this, but it works differently on Tcl and Jim.
#
# This is designed to be called for incorrect usage in auto.def, via autosetup-error
#
proc error-location {msg} {
	if {$::autosetup(debug)} {
		return -code error $msg
	}
	# Search back through the stack trace for the first error in a .def file
	foreach {p f l} [stacktrace] {
		if {[string match *.def $f]} {
			return "[relative-path $f]:$l: Error: $msg"
		}
		#puts "Skipping $f:$l"
	}
	return $msg
}

# If everything is working properly, the only errors which occur
# should be generated in user code (e.g. auto.def).
# By default, we only want to show the error location in user code.
# We use [info frame] to achieve this, but it works differently on Tcl and Jim.
#
# This is designed to be called for incorrect usage in auto.def, via autosetup-error
#
proc error-stacktrace {msg} {
	if {$::autosetup(debug)} {
		return -code error $msg
	}
	# Search back through the stack trace for the first error in a .def file
	for {set i 1} {$i < [info level]} {incr i} {
		if {$::autosetup(istcl)} {
			array set info [info frame -$i]
		} else {
			lassign [info frame -$i] info(caller) info(file) info(line)
		}
		if {[string match *.def $info(file)]} {
			return "[relative-path $info(file)]:$info(line): Error: $msg"
		}
		#puts "Skipping $info(file):$info(line)"
	}
	return $msg
}

# Given the return from [catch {...} msg opts], returns an appropriate
# error message. A nice one for Jim and a less-nice one for Tcl.
# If 'fulltrace' is set, a full stack trace is provided.
# Otherwise a simple message is provided.
#
# This is designed for developer errors, e.g. in module code or auto.def code
#
#
proc error-dump {msg opts fulltrace} {
	if {$::autosetup(istcl)} {
		if {$fulltrace} {
			return "Error: [dict get $opts -errorinfo]"
		} else {
			return "Error: $msg"
		}
	} else {
		lassign $opts(-errorinfo) p f l
		if {$f ne ""} {
			set result "$f:$l: Error: "
		}
		append result "$msg\n"
		if {$fulltrace} {
			append result [stackdump $opts(-errorinfo)]
		}

		# Remove the trailing newline
		string trim $result
	}
}
}

# ----- @module text-formatting.tcl -----

set modsource(text-formatting.tcl) {
# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which provides text formatting

use formatting

proc wordwrap {text length {firstprefix ""} {nextprefix ""}} {
	set len 0
	set space $firstprefix

	foreach word [split $text] {
		set word [string trim $word]
		if {$word eq ""} {
			continue
		}
		if {[info exists partial]} {
			append partial " " $word
			if {[string first $quote $word] < 0} {
				# Haven't found end of quoted word
				continue
			}
			# Finished quoted word
			set word $partial
			unset partial
			unset quote
		} else {
			set quote [string index $word 0]
			if {$quote in {' *}} {
				if {[string first $quote $word 1] < 0} {
					# Haven't found end of quoted word
					# Not a whole word.
					set first [string index $word 0]
					# Start of quoted word
					set partial $word
					continue
				}
			}
		}

		if {$len && [string length $space$word] + $len >= $length} {
			puts ""
			set len 0
			set space $nextprefix
		}
		incr len [string length $space$word]

		# Use man-page conventions for highlighting 'quoted' and *quoted*
		# single words.
		# Use x^Hx for *bold* and _^Hx for 'underline'.
		#
		# less and more will both understand this.
		# Pipe through 'col -b' to remove them.
		if {[regexp {^'(.*)'(.*)} $word -> quoted after]} {
			set quoted [string map {~ " "} $quoted]
			regsub -all . $quoted "&\b&" quoted
			set word $quoted$after
		} elseif {[regexp {^[*](.*)[*](.*)} $word -> quoted after]} {
			set quoted [string map {~ " "} $quoted]
			regsub -all . $quoted "_\b&" quoted
			set word $quoted$after
		}
		puts -nonewline $space$word
		set space " "
	}
	if {[info exists partial]} {
		# Missing end of quote
		puts -nonewline $space$partial
	}
	if {$len} {
		puts ""
	}
}
proc title {text} {
	underline [string trim $text] =
	nl
}
proc p {text} {
	wordwrap $text 80
	nl
}
proc codelines {lines} {
	foreach line $lines {
		puts "	  $line"
	}
	nl
}
proc nl {} {
	puts ""
}
proc underline {text char} {
	regexp "^(\[ \t\]*)(.*)" $text -> indent words
	puts $text
	puts $indent[string repeat $char [string length $words]]
}
proc section {text} {
	underline "[string trim $text]" -
	nl
}
proc subsection {text} {
	underline "$text" ~
	nl
}
proc bullet {text} {
	wordwrap $text 76 "	 * " "	  "
}
proc indent {text} {
	wordwrap $text 76 "	   " "	  "
}
proc defn {first args} {
	if {$first ne ""} {
		underline "	   $first" ~
	}
	foreach p $args {
		if {$p ne ""} {
			indent $p
		}
	}
}
}

# ----- @module util.tcl -----

set modsource(util.tcl) {
# Copyright (c) 2012 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which contains miscellaneous utility functions

# @section Utilities

# @compare-versions version1 version2
#
# Versions are of the form 'a.b.c' (may be any number of numeric components)
#
# Compares the two versions and returns:
## -1 if v1 < v2
##  0 if v1 == v2
##  1 if v1 > v2
#
# If one version has fewer components than the other, 0 is substituted to the right. e.g.
## 0.2   <  0.3
## 0.2.5 >  0.2
## 1.1   == 1.1.0
#
proc compare-versions {v1 v2} {
	foreach c1 [split $v1 .] c2 [split $v2 .] {
		if {$c1 eq ""} {
			set c1 0
		}
		if {$c2 eq ""} {
			set c2 0
		}
		if {$c1 < $c2} {
			return -1
		}
		if {$c1 > $c2} {
			return 1
		}
	}
	return 0
}

# @suffix suf list
#
# Takes a list and returns a new list with '$suf' appended
# to each element
#
## suffix .c {a b c} => {a.c b.c c.c}
#
proc suffix {suf list} {
	set result {}
	foreach p $list {
		lappend result $p$suf
	}
	return $result
}

# @prefix pre list
#
# Takes a list and returns a new list with '$pre' prepended
# to each element
#
## prefix jim- {a.c b.c} => {jim-a.c jim-b.c}
#
proc prefix {pre list} {
	set result {}
	foreach p $list {
		lappend result $pre$p
	}
	return $result
}

# @lpop list
#
# Removes the last entry from the given list and returns it.
proc lpop {listname} {
	upvar $listname list
	set val [lindex $list end]
	set list [lrange $list 0 end-1]
	return $val
}
}

# ----- @module wiki-formatting.tcl -----

set modsource(wiki-formatting.tcl) {
# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Module which provides text formatting
# wiki.tcl.tk format output

use formatting

proc joinlines {text} {
    set lines {}
    foreach l [split [string trim $text] \n] {
        lappend lines [string trim $l]
    }
    join $lines
}
proc p {text} {
    puts [joinlines $text]
    puts ""
}
proc title {text} {
    puts "*** [joinlines $text] ***"
    puts ""
}
proc codelines {lines} {
    puts "======"
    foreach line $lines {
        puts "    $line"
    }
    puts "======"
}
proc code {text} {
    puts "======"
    foreach line [parse_code_block $text] {
        puts "    $line"
    }
    puts "======"
}
proc nl {} {
}
proc section {text} {
    puts "'''$text'''"
    puts ""
}
proc subsection {text} {
    puts "''$text''"
    puts ""
}
proc bullet {text} {
    puts "   * [joinlines $text]"
}
proc indent {text} {
    puts "    :    [joinlines $text]"
}
proc defn {first args} {
    if {$first ne ""} {
        indent '''$first'''
    }

    foreach p $args {
        p $p
    }
}
}


##################################################################
#
# Entry/Exit
#
if {$autosetup(debug)} {
	main $argv
}
if {[catch {main $argv} msg opts] == 1} {
	show-notices
	autosetup-full-error [error-dump $msg $opts $autosetup(debug)]
	if {!$autosetup(debug)} {
		puts stderr "Try: '[file tail $autosetup(exe)] --debug' for a full stack trace"
	}
	exit 1
}
Added autosetup/autosetup-config.guess.























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#! /bin/sh
# Attempt to guess a canonical system name.
#   Copyright 1992-2024 Free Software Foundation, Inc.

# shellcheck disable=SC2006,SC2268 # see below for rationale

timestamp='2024-07-27'

# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <https://www.gnu.org/licenses/>.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that
# program.  This Exception is an additional permission under section 7
# of the GNU General Public License, version 3 ("GPLv3").
#
# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
#
# You can get the latest version of this script from:
# https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
#
# Please send patches to <config-patches@gnu.org>.


# The "shellcheck disable" line above the timestamp inhibits complaints
# about features and limitations of the classic Bourne shell that were
# superseded or lifted in POSIX.  However, this script identifies a wide
# variety of pre-POSIX systems that do not have POSIX shells at all, and
# even some reasonably current systems (Solaris 10 as case-in-point) still
# have a pre-POSIX /bin/sh.


me=`echo "$0" | sed -e 's,.*/,,'`

usage="\
Usage: $0 [OPTION]

Output the configuration name of the system '$me' is run on.

Options:
  -h, --help         print this help, then exit
  -t, --time-stamp   print date of last modification, then exit
  -v, --version      print version number, then exit

Report bugs and patches to <config-patches@gnu.org>."

version="\
GNU config.guess ($timestamp)

Originally written by Per Bothner.
Copyright 1992-2024 Free Software Foundation, Inc.

This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."

help="
Try '$me --help' for more information."

# Parse command line
while test $# -gt 0 ; do
  case $1 in
    --time-stamp | --time* | -t )
       echo "$timestamp" ; exit ;;
    --version | -v )
       echo "$version" ; exit ;;
    --help | --h* | -h )
       echo "$usage"; exit ;;
    -- )     # Stop option processing
       shift; break ;;
    - )	# Use stdin as input.
       break ;;
    -* )
       echo "$me: invalid option $1$help" >&2
       exit 1 ;;
    * )
       break ;;
  esac
done

if test $# != 0; then
  echo "$me: too many arguments$help" >&2
  exit 1
fi

# Just in case it came from the environment.
GUESS=

# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
# compiler to aid in system detection is discouraged as it requires
# temporary files to be created and, as you can see below, it is a
# headache to deal with in a portable fashion.

# Historically, 'CC_FOR_BUILD' used to be named 'HOST_CC'. We still
# use 'HOST_CC' if defined, but it is deprecated.

# Portable tmp directory creation inspired by the Autoconf team.

tmp=
# shellcheck disable=SC2172
trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15

set_cc_for_build() {
    # prevent multiple calls if $tmp is already set
    test "$tmp" && return 0
    : "${TMPDIR=/tmp}"
    # shellcheck disable=SC2039,SC3028
    { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
	{ test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } ||
	{ tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } ||
	{ echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; }
    dummy=$tmp/dummy
    case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
	,,)    echo "int x;" > "$dummy.c"
	       for driver in cc gcc c17 c99 c89 ; do
		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
		       CC_FOR_BUILD=$driver
		       break
		   fi
	       done
	       if test x"$CC_FOR_BUILD" = x ; then
		   CC_FOR_BUILD=no_compiler_found
	       fi
	       ;;
	,,*)   CC_FOR_BUILD=$CC ;;
	,*,*)  CC_FOR_BUILD=$HOST_CC ;;
    esac
}

# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
# (ghazi@noc.rutgers.edu 1994-08-24)
if test -f /.attbin/uname ; then
	PATH=$PATH:/.attbin ; export PATH
fi

UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown

case $UNAME_SYSTEM in
Linux|GNU|GNU/*)
	LIBC=unknown

	set_cc_for_build
	cat <<-EOF > "$dummy.c"
	#if defined(__ANDROID__)
	LIBC=android
	#else
	#include <features.h>
	#if defined(__UCLIBC__)
	LIBC=uclibc
	#elif defined(__dietlibc__)
	LIBC=dietlibc
	#elif defined(__GLIBC__)
	LIBC=gnu
	#elif defined(__LLVM_LIBC__)
	LIBC=llvm
	#else
	#include <stdarg.h>
	/* First heuristic to detect musl libc.  */
	#ifdef __DEFINED_va_list
	LIBC=musl
	#endif
	#endif
	#endif
	EOF
	cc_set_libc=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g'`
	eval "$cc_set_libc"

	# Second heuristic to detect musl libc.
	if [ "$LIBC" = unknown ] &&
	   command -v ldd >/dev/null &&
	   ldd --version 2>&1 | grep -q ^musl; then
		LIBC=musl
	fi

	# If the system lacks a compiler, then just pick glibc.
	# We could probably try harder.
	if [ "$LIBC" = unknown ]; then
		LIBC=gnu
	fi
	;;
esac

# Note: order is significant - the case branches are not exclusive.

case $UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION in
    *:NetBSD:*:*)
	# NetBSD (nbsd) targets should (where applicable) match one or
	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
	# switched to ELF, *-*-netbsd* would select the old
	# object file format.  This provides both forward
	# compatibility and a consistent mechanism for selecting the
	# object file format.
	#
	# Note: NetBSD doesn't particularly care about the vendor
	# portion of the name.  We always set it to "unknown".
	UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
	    /sbin/sysctl -n hw.machine_arch 2>/dev/null || \
	    /usr/sbin/sysctl -n hw.machine_arch 2>/dev/null || \
	    echo unknown)`
	case $UNAME_MACHINE_ARCH in
	    aarch64eb) machine=aarch64_be-unknown ;;
	    armeb) machine=armeb-unknown ;;
	    arm*) machine=arm-unknown ;;
	    sh3el) machine=shl-unknown ;;
	    sh3eb) machine=sh-unknown ;;
	    sh5el) machine=sh5le-unknown ;;
	    earmv*)
		arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,'`
		endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p'`
		machine=${arch}${endian}-unknown
		;;
	    *) machine=$UNAME_MACHINE_ARCH-unknown ;;
	esac
	# The Operating System including object format, if it has switched
	# to ELF recently (or will in the future) and ABI.
	case $UNAME_MACHINE_ARCH in
	    earm*)
		os=netbsdelf
		;;
	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
		set_cc_for_build
		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
			| grep -q __ELF__
		then
		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
		    # Return netbsd for either.  FIX?
		    os=netbsd
		else
		    os=netbsdelf
		fi
		;;
	    *)
		os=netbsd
		;;
	esac
	# Determine ABI tags.
	case $UNAME_MACHINE_ARCH in
	    earm*)
		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
		abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"`
		;;
	esac
	# The OS release
	# Debian GNU/NetBSD machines have a different userland, and
	# thus, need a distinct triplet. However, they do not need
	# kernel version information, so it can be replaced with a
	# suitable tag, in the style of linux-gnu.
	case $UNAME_VERSION in
	    Debian*)
		release='-gnu'
		;;
	    *)
		release=`echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2`
		;;
	esac
	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
	# contains redundant information, the shorter form:
	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
	GUESS=$machine-${os}${release}${abi-}
	;;
    *:Bitrig:*:*)
	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
	GUESS=$UNAME_MACHINE_ARCH-unknown-bitrig$UNAME_RELEASE
	;;
    *:OpenBSD:*:*)
	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
	GUESS=$UNAME_MACHINE_ARCH-unknown-openbsd$UNAME_RELEASE
	;;
    *:SecBSD:*:*)
	UNAME_MACHINE_ARCH=`arch | sed 's/SecBSD.//'`
	GUESS=$UNAME_MACHINE_ARCH-unknown-secbsd$UNAME_RELEASE
	;;
    *:LibertyBSD:*:*)
	UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
	GUESS=$UNAME_MACHINE_ARCH-unknown-libertybsd$UNAME_RELEASE
	;;
    *:MidnightBSD:*:*)
	GUESS=$UNAME_MACHINE-unknown-midnightbsd$UNAME_RELEASE
	;;
    *:ekkoBSD:*:*)
	GUESS=$UNAME_MACHINE-unknown-ekkobsd$UNAME_RELEASE
	;;
    *:SolidBSD:*:*)
	GUESS=$UNAME_MACHINE-unknown-solidbsd$UNAME_RELEASE
	;;
    *:OS108:*:*)
	GUESS=$UNAME_MACHINE-unknown-os108_$UNAME_RELEASE
	;;
    macppc:MirBSD:*:*)
	GUESS=powerpc-unknown-mirbsd$UNAME_RELEASE
	;;
    *:MirBSD:*:*)
	GUESS=$UNAME_MACHINE-unknown-mirbsd$UNAME_RELEASE
	;;
    *:Sortix:*:*)
	GUESS=$UNAME_MACHINE-unknown-sortix
	;;
    *:Twizzler:*:*)
	GUESS=$UNAME_MACHINE-unknown-twizzler
	;;
    *:Redox:*:*)
	GUESS=$UNAME_MACHINE-unknown-redox
	;;
    mips:OSF1:*.*)
	GUESS=mips-dec-osf1
	;;
    alpha:OSF1:*:*)
	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
	trap '' 0
	case $UNAME_RELEASE in
	*4.0)
		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
		;;
	*5.*)
		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
		;;
	esac
	# According to Compaq, /usr/sbin/psrinfo has been available on
	# OSF/1 and Tru64 systems produced since 1995.  I hope that
	# covers most systems running today.  This code pipes the CPU
	# types through head -n 1, so we only detect the type of CPU 0.
	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
	case $ALPHA_CPU_TYPE in
	    "EV4 (21064)")
		UNAME_MACHINE=alpha ;;
	    "EV4.5 (21064)")
		UNAME_MACHINE=alpha ;;
	    "LCA4 (21066/21068)")
		UNAME_MACHINE=alpha ;;
	    "EV5 (21164)")
		UNAME_MACHINE=alphaev5 ;;
	    "EV5.6 (21164A)")
		UNAME_MACHINE=alphaev56 ;;
	    "EV5.6 (21164PC)")
		UNAME_MACHINE=alphapca56 ;;
	    "EV5.7 (21164PC)")
		UNAME_MACHINE=alphapca57 ;;
	    "EV6 (21264)")
		UNAME_MACHINE=alphaev6 ;;
	    "EV6.7 (21264A)")
		UNAME_MACHINE=alphaev67 ;;
	    "EV6.8CB (21264C)")
		UNAME_MACHINE=alphaev68 ;;
	    "EV6.8AL (21264B)")
		UNAME_MACHINE=alphaev68 ;;
	    "EV6.8CX (21264D)")
		UNAME_MACHINE=alphaev68 ;;
	    "EV6.9A (21264/EV69A)")
		UNAME_MACHINE=alphaev69 ;;
	    "EV7 (21364)")
		UNAME_MACHINE=alphaev7 ;;
	    "EV7.9 (21364A)")
		UNAME_MACHINE=alphaev79 ;;
	esac
	# A Pn.n version is a patched version.
	# A Vn.n version is a released version.
	# A Tn.n version is a released field test version.
	# A Xn.n version is an unreleased experimental baselevel.
	# 1.2 uses "1.2" for uname -r.
	OSF_REL=`echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
	GUESS=$UNAME_MACHINE-dec-osf$OSF_REL
	;;
    Amiga*:UNIX_System_V:4.0:*)
	GUESS=m68k-unknown-sysv4
	;;
    *:[Aa]miga[Oo][Ss]:*:*)
	GUESS=$UNAME_MACHINE-unknown-amigaos
	;;
    *:[Mm]orph[Oo][Ss]:*:*)
	GUESS=$UNAME_MACHINE-unknown-morphos
	;;
    *:OS/390:*:*)
	GUESS=i370-ibm-openedition
	;;
    *:z/VM:*:*)
	GUESS=s390-ibm-zvmoe
	;;
    *:OS400:*:*)
	GUESS=powerpc-ibm-os400
	;;
    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
	GUESS=arm-acorn-riscix$UNAME_RELEASE
	;;
    arm*:riscos:*:*|arm*:RISCOS:*:*)
	GUESS=arm-unknown-riscos
	;;
    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
	GUESS=hppa1.1-hitachi-hiuxmpp
	;;
    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
	case `(/bin/universe) 2>/dev/null` in
	    att) GUESS=pyramid-pyramid-sysv3 ;;
	    *)   GUESS=pyramid-pyramid-bsd   ;;
	esac
	;;
    NILE*:*:*:dcosx)
	GUESS=pyramid-pyramid-svr4
	;;
    DRS?6000:unix:4.0:6*)
	GUESS=sparc-icl-nx6
	;;
    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
	case `/usr/bin/uname -p` in
	    sparc) GUESS=sparc-icl-nx7 ;;
	esac
	;;
    s390x:SunOS:*:*)
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
	GUESS=$UNAME_MACHINE-ibm-solaris2$SUN_REL
	;;
    sun4H:SunOS:5.*:*)
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
	GUESS=sparc-hal-solaris2$SUN_REL
	;;
    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
	GUESS=sparc-sun-solaris2$SUN_REL
	;;
    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
	GUESS=i386-pc-auroraux$UNAME_RELEASE
	;;
    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
	set_cc_for_build
	SUN_ARCH=i386
	# If there is a compiler, see if it is configured for 64-bit objects.
	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
	# This test works for both compilers.
	if test "$CC_FOR_BUILD" != no_compiler_found; then
	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
		(CCOPTS="" $CC_FOR_BUILD -m64 -E - 2>/dev/null) | \
		grep IS_64BIT_ARCH >/dev/null
	    then
		SUN_ARCH=x86_64
	    fi
	fi
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
	GUESS=$SUN_ARCH-pc-solaris2$SUN_REL
	;;
    sun4*:SunOS:6*:*)
	# According to config.sub, this is the proper way to canonicalize
	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
	# it's likely to be more like Solaris than SunOS4.
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
	GUESS=sparc-sun-solaris3$SUN_REL
	;;
    sun4*:SunOS:*:*)
	case `/usr/bin/arch -k` in
	    Series*|S4*)
		UNAME_RELEASE=`uname -v`
		;;
	esac
	# Japanese Language versions have a version number like '4.1.3-JL'.
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/'`
	GUESS=sparc-sun-sunos$SUN_REL
	;;
    sun3*:SunOS:*:*)
	GUESS=m68k-sun-sunos$UNAME_RELEASE
	;;
    sun*:*:4.2BSD:*)
	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
	test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
	case `/bin/arch` in
	    sun3)
		GUESS=m68k-sun-sunos$UNAME_RELEASE
		;;
	    sun4)
		GUESS=sparc-sun-sunos$UNAME_RELEASE
		;;
	esac
	;;
    aushp:SunOS:*:*)
	GUESS=sparc-auspex-sunos$UNAME_RELEASE
	;;
    # The situation for MiNT is a little confusing.  The machine name
    # can be virtually everything (everything which is not
    # "atarist" or "atariste" at least should have a processor
    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
    # to the lowercase version "mint" (or "freemint").  Finally
    # the system name "TOS" denotes a system which is actually not
    # MiNT.  But MiNT is downward compatible to TOS, so this should
    # be no problem.
    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
	GUESS=m68k-atari-mint$UNAME_RELEASE
	;;
    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
	GUESS=m68k-atari-mint$UNAME_RELEASE
	;;
    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
	GUESS=m68k-atari-mint$UNAME_RELEASE
	;;
    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
	GUESS=m68k-milan-mint$UNAME_RELEASE
	;;
    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
	GUESS=m68k-hades-mint$UNAME_RELEASE
	;;
    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
	GUESS=m68k-unknown-mint$UNAME_RELEASE
	;;
    m68k:machten:*:*)
	GUESS=m68k-apple-machten$UNAME_RELEASE
	;;
    powerpc:machten:*:*)
	GUESS=powerpc-apple-machten$UNAME_RELEASE
	;;
    RISC*:Mach:*:*)
	GUESS=mips-dec-mach_bsd4.3
	;;
    RISC*:ULTRIX:*:*)
	GUESS=mips-dec-ultrix$UNAME_RELEASE
	;;
    VAX*:ULTRIX*:*:*)
	GUESS=vax-dec-ultrix$UNAME_RELEASE
	;;
    2020:CLIX:*:* | 2430:CLIX:*:*)
	GUESS=clipper-intergraph-clix$UNAME_RELEASE
	;;
    mips:*:*:UMIPS | mips:*:*:RISCos)
	set_cc_for_build
	sed 's/^	//' << EOF > "$dummy.c"
#ifdef __cplusplus
#include <stdio.h>  /* for printf() prototype */
	int main (int argc, char *argv[]) {
#else
	int main (argc, argv) int argc; char *argv[]; {
#endif
	#if defined (host_mips) && defined (MIPSEB)
	#if defined (SYSTYPE_SYSV)
	  printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0);
	#endif
	#if defined (SYSTYPE_SVR4)
	  printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0);
	#endif
	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
	  printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0);
	#endif
	#endif
	  exit (-1);
	}
EOF
	$CC_FOR_BUILD -o "$dummy" "$dummy.c" &&
	  dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` &&
	  SYSTEM_NAME=`"$dummy" "$dummyarg"` &&
	    { echo "$SYSTEM_NAME"; exit; }
	GUESS=mips-mips-riscos$UNAME_RELEASE
	;;
    Motorola:PowerMAX_OS:*:*)
	GUESS=powerpc-motorola-powermax
	;;
    Motorola:*:4.3:PL8-*)
	GUESS=powerpc-harris-powermax
	;;
    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
	GUESS=powerpc-harris-powermax
	;;
    Night_Hawk:Power_UNIX:*:*)
	GUESS=powerpc-harris-powerunix
	;;
    m88k:CX/UX:7*:*)
	GUESS=m88k-harris-cxux7
	;;
    m88k:*:4*:R4*)
	GUESS=m88k-motorola-sysv4
	;;
    m88k:*:3*:R3*)
	GUESS=m88k-motorola-sysv3
	;;
    AViiON:dgux:*:*)
	# DG/UX returns AViiON for all architectures
	UNAME_PROCESSOR=`/usr/bin/uname -p`
	if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110
	then
	    if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
	       test "$TARGET_BINARY_INTERFACE"x = x
	    then
		GUESS=m88k-dg-dgux$UNAME_RELEASE
	    else
		GUESS=m88k-dg-dguxbcs$UNAME_RELEASE
	    fi
	else
	    GUESS=i586-dg-dgux$UNAME_RELEASE
	fi
	;;
    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
	GUESS=m88k-dolphin-sysv3
	;;
    M88*:*:R3*:*)
	# Delta 88k system running SVR3
	GUESS=m88k-motorola-sysv3
	;;
    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
	GUESS=m88k-tektronix-sysv3
	;;
    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
	GUESS=m68k-tektronix-bsd
	;;
    *:IRIX*:*:*)
	IRIX_REL=`echo "$UNAME_RELEASE" | sed -e 's/-/_/g'`
	GUESS=mips-sgi-irix$IRIX_REL
	;;
    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
	GUESS=romp-ibm-aix    # uname -m gives an 8 hex-code CPU id
	;;                    # Note that: echo "'`uname -s`'" gives 'AIX '
    i*86:AIX:*:*)
	GUESS=i386-ibm-aix
	;;
    ia64:AIX:*:*)
	if test -x /usr/bin/oslevel ; then
		IBM_REV=`/usr/bin/oslevel`
	else
		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
	fi
	GUESS=$UNAME_MACHINE-ibm-aix$IBM_REV
	;;
    *:AIX:2:3)
	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
		set_cc_for_build
		sed 's/^		//' << EOF > "$dummy.c"
		#include <sys/systemcfg.h>

		int
		main ()
			{
			if (!__power_pc())
				exit(1);
			puts("powerpc-ibm-aix3.2.5");
			exit(0);
			}
EOF
		if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"`
		then
			GUESS=$SYSTEM_NAME
		else
			GUESS=rs6000-ibm-aix3.2.5
		fi
	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
		GUESS=rs6000-ibm-aix3.2.4
	else
		GUESS=rs6000-ibm-aix3.2
	fi
	;;
    *:AIX:*:[4567])
	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
	if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then
		IBM_ARCH=rs6000
	else
		IBM_ARCH=powerpc
	fi
	if test -x /usr/bin/lslpp ; then
		IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | \
			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
	else
		IBM_REV=$UNAME_VERSION.$UNAME_RELEASE
	fi
	GUESS=$IBM_ARCH-ibm-aix$IBM_REV
	;;
    *:AIX:*:*)
	GUESS=rs6000-ibm-aix
	;;
    ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
	GUESS=romp-ibm-bsd4.4
	;;
    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
	GUESS=romp-ibm-bsd$UNAME_RELEASE    # 4.3 with uname added to
	;;                                  # report: romp-ibm BSD 4.3
    *:BOSX:*:*)
	GUESS=rs6000-bull-bosx
	;;
    DPX/2?00:B.O.S.:*:*)
	GUESS=m68k-bull-sysv3
	;;
    9000/[34]??:4.3bsd:1.*:*)
	GUESS=m68k-hp-bsd
	;;
    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
	GUESS=m68k-hp-bsd4.4
	;;
    9000/[34678]??:HP-UX:*:*)
	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
	case $UNAME_MACHINE in
	    9000/31?)            HP_ARCH=m68000 ;;
	    9000/[34]??)         HP_ARCH=m68k ;;
	    9000/[678][0-9][0-9])
		if test -x /usr/bin/getconf; then
		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
		    case $sc_cpu_version in
		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
		      532)                      # CPU_PA_RISC2_0
			case $sc_kernel_bits in
			  32) HP_ARCH=hppa2.0n ;;
			  64) HP_ARCH=hppa2.0w ;;
			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
			esac ;;
		    esac
		fi
		if test "$HP_ARCH" = ""; then
		    set_cc_for_build
		    sed 's/^		//' << EOF > "$dummy.c"

		#define _HPUX_SOURCE
		#include <stdlib.h>
		#include <unistd.h>

		int
		main ()
		{
		#if defined(_SC_KERNEL_BITS)
		    long bits = sysconf(_SC_KERNEL_BITS);
		#endif
		    long cpu  = sysconf (_SC_CPU_VERSION);

		    switch (cpu)
			{
			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
			case CPU_PA_RISC2_0:
		#if defined(_SC_KERNEL_BITS)
			    switch (bits)
				{
				case 64: puts ("hppa2.0w"); break;
				case 32: puts ("hppa2.0n"); break;
				default: puts ("hppa2.0"); break;
				} break;
		#else  /* !defined(_SC_KERNEL_BITS) */
			    puts ("hppa2.0"); break;
		#endif
			default: puts ("hppa1.0"); break;
			}
		    exit (0);
		}
EOF
		    (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=`"$dummy"`
		    test -z "$HP_ARCH" && HP_ARCH=hppa
		fi ;;
	esac
	if test "$HP_ARCH" = hppa2.0w
	then
	    set_cc_for_build

	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
	    # generating 64-bit code.  GNU and HP use different nomenclature:
	    #
	    # $ CC_FOR_BUILD=cc ./config.guess
	    # => hppa2.0w-hp-hpux11.23
	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
	    # => hppa64-hp-hpux11.23

	    if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) |
		grep -q __LP64__
	    then
		HP_ARCH=hppa2.0w
	    else
		HP_ARCH=hppa64
	    fi
	fi
	GUESS=$HP_ARCH-hp-hpux$HPUX_REV
	;;
    ia64:HP-UX:*:*)
	HPUX_REV=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*.[0B]*//'`
	GUESS=ia64-hp-hpux$HPUX_REV
	;;
    3050*:HI-UX:*:*)
	set_cc_for_build
	sed 's/^	//' << EOF > "$dummy.c"
	#include <unistd.h>
	int
	main ()
	{
	  long cpu = sysconf (_SC_CPU_VERSION);
	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
	     results, however.  */
	  if (CPU_IS_PA_RISC (cpu))
	    {
	      switch (cpu)
		{
		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
		  default: puts ("hppa-hitachi-hiuxwe2"); break;
		}
	    }
	  else if (CPU_IS_HP_MC68K (cpu))
	    puts ("m68k-hitachi-hiuxwe2");
	  else puts ("unknown-hitachi-hiuxwe2");
	  exit (0);
	}
EOF
	$CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` &&
		{ echo "$SYSTEM_NAME"; exit; }
	GUESS=unknown-hitachi-hiuxwe2
	;;
    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
	GUESS=hppa1.1-hp-bsd
	;;
    9000/8??:4.3bsd:*:*)
	GUESS=hppa1.0-hp-bsd
	;;
    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
	GUESS=hppa1.0-hp-mpeix
	;;
    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
	GUESS=hppa1.1-hp-osf
	;;
    hp8??:OSF1:*:*)
	GUESS=hppa1.0-hp-osf
	;;
    i*86:OSF1:*:*)
	if test -x /usr/sbin/sysversion ; then
	    GUESS=$UNAME_MACHINE-unknown-osf1mk
	else
	    GUESS=$UNAME_MACHINE-unknown-osf1
	fi
	;;
    parisc*:Lites*:*:*)
	GUESS=hppa1.1-hp-lites
	;;
    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
	GUESS=c1-convex-bsd
	;;
    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
	if getsysinfo -f scalar_acc
	then echo c32-convex-bsd
	else echo c2-convex-bsd
	fi
	exit ;;
    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
	GUESS=c34-convex-bsd
	;;
    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
	GUESS=c38-convex-bsd
	;;
    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
	GUESS=c4-convex-bsd
	;;
    CRAY*Y-MP:*:*:*)
	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
	GUESS=ymp-cray-unicos$CRAY_REL
	;;
    CRAY*[A-Z]90:*:*:*)
	echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \
	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
	      -e 's/\.[^.]*$/.X/'
	exit ;;
    CRAY*TS:*:*:*)
	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
	GUESS=t90-cray-unicos$CRAY_REL
	;;
    CRAY*T3E:*:*:*)
	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
	GUESS=alphaev5-cray-unicosmk$CRAY_REL
	;;
    CRAY*SV1:*:*:*)
	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
	GUESS=sv1-cray-unicos$CRAY_REL
	;;
    *:UNICOS/mp:*:*)
	CRAY_REL=`echo "$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'`
	GUESS=craynv-cray-unicosmp$CRAY_REL
	;;
    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
	FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`
	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
	FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'`
	GUESS=${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
	;;
    5000:UNIX_System_V:4.*:*)
	FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
	FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
	GUESS=sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}
	;;
    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
	GUESS=$UNAME_MACHINE-pc-bsdi$UNAME_RELEASE
	;;
    sparc*:BSD/OS:*:*)
	GUESS=sparc-unknown-bsdi$UNAME_RELEASE
	;;
    *:BSD/OS:*:*)
	GUESS=$UNAME_MACHINE-unknown-bsdi$UNAME_RELEASE
	;;
    arm:FreeBSD:*:*)
	UNAME_PROCESSOR=`uname -p`
	set_cc_for_build
	if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
	    | grep -q __ARM_PCS_VFP
	then
	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabi
	else
	    FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
	    GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL-gnueabihf
	fi
	;;
    *:FreeBSD:*:*)
	UNAME_PROCESSOR=`uname -p`
	case $UNAME_PROCESSOR in
	    amd64)
		UNAME_PROCESSOR=x86_64 ;;
	    i386)
		UNAME_PROCESSOR=i586 ;;
	esac
	FREEBSD_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
	GUESS=$UNAME_PROCESSOR-unknown-freebsd$FREEBSD_REL
	;;
    i*:CYGWIN*:*)
	GUESS=$UNAME_MACHINE-pc-cygwin
	;;
    *:MINGW64*:*)
	GUESS=$UNAME_MACHINE-pc-mingw64
	;;
    *:MINGW*:*)
	GUESS=$UNAME_MACHINE-pc-mingw32
	;;
    *:MSYS*:*)
	GUESS=$UNAME_MACHINE-pc-msys
	;;
    i*:PW*:*)
	GUESS=$UNAME_MACHINE-pc-pw32
	;;
    *:SerenityOS:*:*)
        GUESS=$UNAME_MACHINE-pc-serenity
        ;;
    *:Interix*:*)
	case $UNAME_MACHINE in
	    x86)
		GUESS=i586-pc-interix$UNAME_RELEASE
		;;
	    authenticamd | genuineintel | EM64T)
		GUESS=x86_64-unknown-interix$UNAME_RELEASE
		;;
	    IA64)
		GUESS=ia64-unknown-interix$UNAME_RELEASE
		;;
	esac ;;
    i*:UWIN*:*)
	GUESS=$UNAME_MACHINE-pc-uwin
	;;
    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
	GUESS=x86_64-pc-cygwin
	;;
    prep*:SunOS:5.*:*)
	SUN_REL=`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`
	GUESS=powerpcle-unknown-solaris2$SUN_REL
	;;
    *:GNU:*:*)
	# the GNU system
	GNU_ARCH=`echo "$UNAME_MACHINE" | sed -e 's,[-/].*$,,'`
	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's,/.*$,,'`
	GUESS=$GNU_ARCH-unknown-$LIBC$GNU_REL
	;;
    *:GNU/*:*:*)
	# other systems with GNU libc and userland
	GNU_SYS=`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"`
	GNU_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
	GUESS=$UNAME_MACHINE-unknown-$GNU_SYS$GNU_REL-$LIBC
	;;
    x86_64:[Mm]anagarm:*:*|i?86:[Mm]anagarm:*:*)
	GUESS="$UNAME_MACHINE-pc-managarm-mlibc"
	;;
    *:[Mm]anagarm:*:*)
	GUESS="$UNAME_MACHINE-unknown-managarm-mlibc"
	;;
    *:Minix:*:*)
	GUESS=$UNAME_MACHINE-unknown-minix
	;;
    aarch64:Linux:*:*)
	set_cc_for_build
	CPU=$UNAME_MACHINE
	LIBCABI=$LIBC
	if test "$CC_FOR_BUILD" != no_compiler_found; then
	    ABI=64
	    sed 's/^	    //' << EOF > "$dummy.c"
	    #ifdef __ARM_EABI__
	    #ifdef __ARM_PCS_VFP
	    ABI=eabihf
	    #else
	    ABI=eabi
	    #endif
	    #endif
EOF
	    cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'`
	    eval "$cc_set_abi"
	    case $ABI in
		eabi | eabihf) CPU=armv8l; LIBCABI=$LIBC$ABI ;;
	    esac
	fi
	GUESS=$CPU-unknown-linux-$LIBCABI
	;;
    aarch64_be:Linux:*:*)
	UNAME_MACHINE=aarch64_be
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    alpha:Linux:*:*)
	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null` in
	  EV5)   UNAME_MACHINE=alphaev5 ;;
	  EV56)  UNAME_MACHINE=alphaev56 ;;
	  PCA56) UNAME_MACHINE=alphapca56 ;;
	  PCA57) UNAME_MACHINE=alphapca56 ;;
	  EV6)   UNAME_MACHINE=alphaev6 ;;
	  EV67)  UNAME_MACHINE=alphaev67 ;;
	  EV68*) UNAME_MACHINE=alphaev68 ;;
	esac
	objdump --private-headers /bin/sh | grep -q ld.so.1
	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    arc:Linux:*:* | arceb:Linux:*:* | arc32:Linux:*:* | arc64:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    arm*:Linux:*:*)
	set_cc_for_build
	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
	    | grep -q __ARM_EABI__
	then
	    GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	else
	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
		| grep -q __ARM_PCS_VFP
	    then
		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabi
	    else
		GUESS=$UNAME_MACHINE-unknown-linux-${LIBC}eabihf
	    fi
	fi
	;;
    avr32*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    cris:Linux:*:*)
	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
	;;
    crisv32:Linux:*:*)
	GUESS=$UNAME_MACHINE-axis-linux-$LIBC
	;;
    e2k:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    frv:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    hexagon:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    i*86:Linux:*:*)
	GUESS=$UNAME_MACHINE-pc-linux-$LIBC
	;;
    ia64:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    k1om:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    kvx:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    kvx:cos:*:*)
	GUESS=$UNAME_MACHINE-unknown-cos
	;;
    kvx:mbr:*:*)
	GUESS=$UNAME_MACHINE-unknown-mbr
	;;
    loongarch32:Linux:*:* | loongarch64:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    m32r*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    m68*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    mips:Linux:*:* | mips64:Linux:*:*)
	set_cc_for_build
	IS_GLIBC=0
	test x"${LIBC}" = xgnu && IS_GLIBC=1
	sed 's/^	//' << EOF > "$dummy.c"
	#undef CPU
	#undef mips
	#undef mipsel
	#undef mips64
	#undef mips64el
	#if ${IS_GLIBC} && defined(_ABI64)
	LIBCABI=gnuabi64
	#else
	#if ${IS_GLIBC} && defined(_ABIN32)
	LIBCABI=gnuabin32
	#else
	LIBCABI=${LIBC}
	#endif
	#endif

	#if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
	CPU=mipsisa64r6
	#else
	#if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
	CPU=mipsisa32r6
	#else
	#if defined(__mips64)
	CPU=mips64
	#else
	CPU=mips
	#endif
	#endif
	#endif

	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
	MIPS_ENDIAN=el
	#else
	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
	MIPS_ENDIAN=
	#else
	MIPS_ENDIAN=
	#endif
	#endif
EOF
	cc_set_vars=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI'`
	eval "$cc_set_vars"
	test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
	;;
    mips64el:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    openrisc*:Linux:*:*)
	GUESS=or1k-unknown-linux-$LIBC
	;;
    or32:Linux:*:* | or1k*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    padre:Linux:*:*)
	GUESS=sparc-unknown-linux-$LIBC
	;;
    parisc64:Linux:*:* | hppa64:Linux:*:*)
	GUESS=hppa64-unknown-linux-$LIBC
	;;
    parisc:Linux:*:* | hppa:Linux:*:*)
	# Look for CPU level
	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
	  PA7*) GUESS=hppa1.1-unknown-linux-$LIBC ;;
	  PA8*) GUESS=hppa2.0-unknown-linux-$LIBC ;;
	  *)    GUESS=hppa-unknown-linux-$LIBC ;;
	esac
	;;
    ppc64:Linux:*:*)
	GUESS=powerpc64-unknown-linux-$LIBC
	;;
    ppc:Linux:*:*)
	GUESS=powerpc-unknown-linux-$LIBC
	;;
    ppc64le:Linux:*:*)
	GUESS=powerpc64le-unknown-linux-$LIBC
	;;
    ppcle:Linux:*:*)
	GUESS=powerpcle-unknown-linux-$LIBC
	;;
    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    s390:Linux:*:* | s390x:Linux:*:*)
	GUESS=$UNAME_MACHINE-ibm-linux-$LIBC
	;;
    sh64*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    sh*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    sparc:Linux:*:* | sparc64:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    tile*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    vax:Linux:*:*)
	GUESS=$UNAME_MACHINE-dec-linux-$LIBC
	;;
    x86_64:Linux:*:*)
	set_cc_for_build
	CPU=$UNAME_MACHINE
	LIBCABI=$LIBC
	if test "$CC_FOR_BUILD" != no_compiler_found; then
	    ABI=64
	    sed 's/^	    //' << EOF > "$dummy.c"
	    #ifdef __i386__
	    ABI=x86
	    #else
	    #ifdef __ILP32__
	    ABI=x32
	    #endif
	    #endif
EOF
	    cc_set_abi=`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^ABI' | sed 's, ,,g'`
	    eval "$cc_set_abi"
	    case $ABI in
		x86) CPU=i686 ;;
		x32) LIBCABI=${LIBC}x32 ;;
	    esac
	fi
	GUESS=$CPU-pc-linux-$LIBCABI
	;;
    xtensa*:Linux:*:*)
	GUESS=$UNAME_MACHINE-unknown-linux-$LIBC
	;;
    i*86:DYNIX/ptx:4*:*)
	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
	# earlier versions are messed up and put the nodename in both
	# sysname and nodename.
	GUESS=i386-sequent-sysv4
	;;
    i*86:UNIX_SV:4.2MP:2.*)
	# Unixware is an offshoot of SVR4, but it has its own version
	# number series starting with 2...
	# I am not positive that other SVR4 systems won't match this,
	# I just have to hope.  -- rms.
	# Use sysv4.2uw... so that sysv4* matches it.
	GUESS=$UNAME_MACHINE-pc-sysv4.2uw$UNAME_VERSION
	;;
    i*86:OS/2:*:*)
	# If we were able to find 'uname', then EMX Unix compatibility
	# is probably installed.
	GUESS=$UNAME_MACHINE-pc-os2-emx
	;;
    i*86:XTS-300:*:STOP)
	GUESS=$UNAME_MACHINE-unknown-stop
	;;
    i*86:atheos:*:*)
	GUESS=$UNAME_MACHINE-unknown-atheos
	;;
    i*86:syllable:*:*)
	GUESS=$UNAME_MACHINE-pc-syllable
	;;
    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
	GUESS=i386-unknown-lynxos$UNAME_RELEASE
	;;
    i*86:*DOS:*:*)
	GUESS=$UNAME_MACHINE-pc-msdosdjgpp
	;;
    i*86:*:4.*:*)
	UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'`
	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
		GUESS=$UNAME_MACHINE-univel-sysv$UNAME_REL
	else
		GUESS=$UNAME_MACHINE-pc-sysv$UNAME_REL
	fi
	;;
    i*86:*:5:[678]*)
	# UnixWare 7.x, OpenUNIX and OpenServer 6.
	case `/bin/uname -X | grep "^Machine"` in
	    *486*)	     UNAME_MACHINE=i486 ;;
	    *Pentium)	     UNAME_MACHINE=i586 ;;
	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
	esac
	GUESS=$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
	;;
    i*86:*:3.2:*)
	if test -f /usr/options/cb.name; then
		UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
		GUESS=$UNAME_MACHINE-pc-isc$UNAME_REL
	elif /bin/uname -X 2>/dev/null >/dev/null ; then
		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
			&& UNAME_MACHINE=i586
		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
			&& UNAME_MACHINE=i686
		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
			&& UNAME_MACHINE=i686
		GUESS=$UNAME_MACHINE-pc-sco$UNAME_REL
	else
		GUESS=$UNAME_MACHINE-pc-sysv32
	fi
	;;
    pc:*:*:*)
	# Left here for compatibility:
	# uname -m prints for DJGPP always 'pc', but it prints nothing about
	# the processor, so we play safe by assuming i586.
	# Note: whatever this is, it MUST be the same as what config.sub
	# prints for the "djgpp" host, or else GDB configure will decide that
	# this is a cross-build.
	GUESS=i586-pc-msdosdjgpp
	;;
    Intel:Mach:3*:*)
	GUESS=i386-pc-mach3
	;;
    paragon:*:*:*)
	GUESS=i860-intel-osf1
	;;
    i860:*:4.*:*) # i860-SVR4
	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
	  GUESS=i860-stardent-sysv$UNAME_RELEASE    # Stardent Vistra i860-SVR4
	else # Add other i860-SVR4 vendors below as they are discovered.
	  GUESS=i860-unknown-sysv$UNAME_RELEASE     # Unknown i860-SVR4
	fi
	;;
    mini*:CTIX:SYS*5:*)
	# "miniframe"
	GUESS=m68010-convergent-sysv
	;;
    mc68k:UNIX:SYSTEM5:3.51m)
	GUESS=m68k-convergent-sysv
	;;
    M680?0:D-NIX:5.3:*)
	GUESS=m68k-diab-dnix
	;;
    M68*:*:R3V[5678]*:*)
	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
	OS_REL=''
	test -r /etc/.relid \
	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
	  && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
	  && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
	  && { echo i486-ncr-sysv4; exit; } ;;
    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
	OS_REL='.3'
	test -r /etc/.relid \
	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
	    && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; }
	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
	GUESS=m68k-unknown-lynxos$UNAME_RELEASE
	;;
    mc68030:UNIX_System_V:4.*:*)
	GUESS=m68k-atari-sysv4
	;;
    TSUNAMI:LynxOS:2.*:*)
	GUESS=sparc-unknown-lynxos$UNAME_RELEASE
	;;
    rs6000:LynxOS:2.*:*)
	GUESS=rs6000-unknown-lynxos$UNAME_RELEASE
	;;
    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
	GUESS=powerpc-unknown-lynxos$UNAME_RELEASE
	;;
    SM[BE]S:UNIX_SV:*:*)
	GUESS=mips-dde-sysv$UNAME_RELEASE
	;;
    RM*:ReliantUNIX-*:*:*)
	GUESS=mips-sni-sysv4
	;;
    RM*:SINIX-*:*:*)
	GUESS=mips-sni-sysv4
	;;
    *:SINIX-*:*:*)
	if uname -p 2>/dev/null >/dev/null ; then
		UNAME_MACHINE=`(uname -p) 2>/dev/null`
		GUESS=$UNAME_MACHINE-sni-sysv4
	else
		GUESS=ns32k-sni-sysv
	fi
	;;
    PENTIUM:*:4.0*:*)	# Unisys 'ClearPath HMP IX 4000' SVR4/MP effort
			# says <Richard.M.Bartel@ccMail.Census.GOV>
	GUESS=i586-unisys-sysv4
	;;
    *:UNIX_System_V:4*:FTX*)
	# From Gerald Hewes <hewes@openmarket.com>.
	# How about differentiating between stratus architectures? -djm
	GUESS=hppa1.1-stratus-sysv4
	;;
    *:*:*:FTX*)
	# From seanf@swdc.stratus.com.
	GUESS=i860-stratus-sysv4
	;;
    i*86:VOS:*:*)
	# From Paul.Green@stratus.com.
	GUESS=$UNAME_MACHINE-stratus-vos
	;;
    *:VOS:*:*)
	# From Paul.Green@stratus.com.
	GUESS=hppa1.1-stratus-vos
	;;
    mc68*:A/UX:*:*)
	GUESS=m68k-apple-aux$UNAME_RELEASE
	;;
    news*:NEWS-OS:6*:*)
	GUESS=mips-sony-newsos6
	;;
    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
	if test -d /usr/nec; then
		GUESS=mips-nec-sysv$UNAME_RELEASE
	else
		GUESS=mips-unknown-sysv$UNAME_RELEASE
	fi
	;;
    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
	GUESS=powerpc-be-beos
	;;
    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
	GUESS=powerpc-apple-beos
	;;
    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
	GUESS=i586-pc-beos
	;;
    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
	GUESS=i586-pc-haiku
	;;
    ppc:Haiku:*:*)	# Haiku running on Apple PowerPC
	GUESS=powerpc-apple-haiku
	;;
    *:Haiku:*:*)	# Haiku modern gcc (not bound by BeOS compat)
	GUESS=$UNAME_MACHINE-unknown-haiku
	;;
    SX-4:SUPER-UX:*:*)
	GUESS=sx4-nec-superux$UNAME_RELEASE
	;;
    SX-5:SUPER-UX:*:*)
	GUESS=sx5-nec-superux$UNAME_RELEASE
	;;
    SX-6:SUPER-UX:*:*)
	GUESS=sx6-nec-superux$UNAME_RELEASE
	;;
    SX-7:SUPER-UX:*:*)
	GUESS=sx7-nec-superux$UNAME_RELEASE
	;;
    SX-8:SUPER-UX:*:*)
	GUESS=sx8-nec-superux$UNAME_RELEASE
	;;
    SX-8R:SUPER-UX:*:*)
	GUESS=sx8r-nec-superux$UNAME_RELEASE
	;;
    SX-ACE:SUPER-UX:*:*)
	GUESS=sxace-nec-superux$UNAME_RELEASE
	;;
    Power*:Rhapsody:*:*)
	GUESS=powerpc-apple-rhapsody$UNAME_RELEASE
	;;
    *:Rhapsody:*:*)
	GUESS=$UNAME_MACHINE-apple-rhapsody$UNAME_RELEASE
	;;
    arm64:Darwin:*:*)
	GUESS=aarch64-apple-darwin$UNAME_RELEASE
	;;
    *:Darwin:*:*)
	UNAME_PROCESSOR=`uname -p`
	case $UNAME_PROCESSOR in
	    unknown) UNAME_PROCESSOR=powerpc ;;
	esac
	if command -v xcode-select > /dev/null 2> /dev/null && \
		! xcode-select --print-path > /dev/null 2> /dev/null ; then
	    # Avoid executing cc if there is no toolchain installed as
	    # cc will be a stub that puts up a graphical alert
	    # prompting the user to install developer tools.
	    CC_FOR_BUILD=no_compiler_found
	else
	    set_cc_for_build
	fi
	if test "$CC_FOR_BUILD" != no_compiler_found; then
	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
		   grep IS_64BIT_ARCH >/dev/null
	    then
		case $UNAME_PROCESSOR in
		    i386) UNAME_PROCESSOR=x86_64 ;;
		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
		esac
	    fi
	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
		   grep IS_PPC >/dev/null
	    then
		UNAME_PROCESSOR=powerpc
	    fi
	elif test "$UNAME_PROCESSOR" = i386 ; then
	    # uname -m returns i386 or x86_64
	    UNAME_PROCESSOR=$UNAME_MACHINE
	fi
	GUESS=$UNAME_PROCESSOR-apple-darwin$UNAME_RELEASE
	;;
    *:procnto*:*:* | *:QNX:[0123456789]*:*)
	UNAME_PROCESSOR=`uname -p`
	if test "$UNAME_PROCESSOR" = x86; then
		UNAME_PROCESSOR=i386
		UNAME_MACHINE=pc
	fi
	GUESS=$UNAME_PROCESSOR-$UNAME_MACHINE-nto-qnx$UNAME_RELEASE
	;;
    *:QNX:*:4*)
	GUESS=i386-pc-qnx
	;;
    NEO-*:NONSTOP_KERNEL:*:*)
	GUESS=neo-tandem-nsk$UNAME_RELEASE
	;;
    NSE-*:NONSTOP_KERNEL:*:*)
	GUESS=nse-tandem-nsk$UNAME_RELEASE
	;;
    NSR-*:NONSTOP_KERNEL:*:*)
	GUESS=nsr-tandem-nsk$UNAME_RELEASE
	;;
    NSV-*:NONSTOP_KERNEL:*:*)
	GUESS=nsv-tandem-nsk$UNAME_RELEASE
	;;
    NSX-*:NONSTOP_KERNEL:*:*)
	GUESS=nsx-tandem-nsk$UNAME_RELEASE
	;;
    *:NonStop-UX:*:*)
	GUESS=mips-compaq-nonstopux
	;;
    BS2000:POSIX*:*:*)
	GUESS=bs2000-siemens-sysv
	;;
    DS/*:UNIX_System_V:*:*)
	GUESS=$UNAME_MACHINE-$UNAME_SYSTEM-$UNAME_RELEASE
	;;
    *:Plan9:*:*)
	# "uname -m" is not consistent, so use $cputype instead. 386
	# is converted to i386 for consistency with other x86
	# operating systems.
	if test "${cputype-}" = 386; then
	    UNAME_MACHINE=i386
	elif test "x${cputype-}" != x; then
	    UNAME_MACHINE=$cputype
	fi
	GUESS=$UNAME_MACHINE-unknown-plan9
	;;
    *:TOPS-10:*:*)
	GUESS=pdp10-unknown-tops10
	;;
    *:TENEX:*:*)
	GUESS=pdp10-unknown-tenex
	;;
    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
	GUESS=pdp10-dec-tops20
	;;
    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
	GUESS=pdp10-xkl-tops20
	;;
    *:TOPS-20:*:*)
	GUESS=pdp10-unknown-tops20
	;;
    *:ITS:*:*)
	GUESS=pdp10-unknown-its
	;;
    SEI:*:*:SEIUX)
	GUESS=mips-sei-seiux$UNAME_RELEASE
	;;
    *:DragonFly:*:*)
	DRAGONFLY_REL=`echo "$UNAME_RELEASE" | sed -e 's/[-(].*//'`
	GUESS=$UNAME_MACHINE-unknown-dragonfly$DRAGONFLY_REL
	;;
    *:*VMS:*:*)
	UNAME_MACHINE=`(uname -p) 2>/dev/null`
	case $UNAME_MACHINE in
	    A*) GUESS=alpha-dec-vms ;;
	    I*) GUESS=ia64-dec-vms ;;
	    V*) GUESS=vax-dec-vms ;;
	esac ;;
    *:XENIX:*:SysV)
	GUESS=i386-pc-xenix
	;;
    i*86:skyos:*:*)
	SKYOS_REL=`echo "$UNAME_RELEASE" | sed -e 's/ .*$//'`
	GUESS=$UNAME_MACHINE-pc-skyos$SKYOS_REL
	;;
    i*86:rdos:*:*)
	GUESS=$UNAME_MACHINE-pc-rdos
	;;
    i*86:Fiwix:*:*)
	GUESS=$UNAME_MACHINE-pc-fiwix
	;;
    *:AROS:*:*)
	GUESS=$UNAME_MACHINE-unknown-aros
	;;
    x86_64:VMkernel:*:*)
	GUESS=$UNAME_MACHINE-unknown-esx
	;;
    amd64:Isilon\ OneFS:*:*)
	GUESS=x86_64-unknown-onefs
	;;
    *:Unleashed:*:*)
	GUESS=$UNAME_MACHINE-unknown-unleashed$UNAME_RELEASE
	;;
    *:Ironclad:*:*)
	GUESS=$UNAME_MACHINE-unknown-ironclad
	;;
esac

# Do we have a guess based on uname results?
if test "x$GUESS" != x; then
    echo "$GUESS"
    exit
fi

# No uname command or uname output not recognized.
set_cc_for_build
cat > "$dummy.c" <<EOF
#ifdef _SEQUENT_
#include <sys/types.h>
#include <sys/utsname.h>
#endif
#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
#include <signal.h>
#if defined(_SIZE_T_) || defined(SIGLOST)
#include <sys/utsname.h>
#endif
#endif
#endif
int
main ()
{
#if defined (sony)
#if defined (MIPSEB)
  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
     I don't know....  */
  printf ("mips-sony-bsd\n"); exit (0);
#else
#include <sys/param.h>
  printf ("m68k-sony-newsos%s\n",
#ifdef NEWSOS4
  "4"
#else
  ""
#endif
  ); exit (0);
#endif
#endif

#if defined (NeXT)
#if !defined (__ARCHITECTURE__)
#define __ARCHITECTURE__ "m68k"
#endif
  int version;
  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
  if (version < 4)
    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
  else
    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
  exit (0);
#endif

#if defined (MULTIMAX) || defined (n16)
#if defined (UMAXV)
  printf ("ns32k-encore-sysv\n"); exit (0);
#else
#if defined (CMU)
  printf ("ns32k-encore-mach\n"); exit (0);
#else
  printf ("ns32k-encore-bsd\n"); exit (0);
#endif
#endif
#endif

#if defined (__386BSD__)
  printf ("i386-pc-bsd\n"); exit (0);
#endif

#if defined (sequent)
#if defined (i386)
  printf ("i386-sequent-dynix\n"); exit (0);
#endif
#if defined (ns32000)
  printf ("ns32k-sequent-dynix\n"); exit (0);
#endif
#endif

#if defined (_SEQUENT_)
  struct utsname un;

  uname(&un);
  if (strncmp(un.version, "V2", 2) == 0) {
    printf ("i386-sequent-ptx2\n"); exit (0);
  }
  if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
    printf ("i386-sequent-ptx1\n"); exit (0);
  }
  printf ("i386-sequent-ptx\n"); exit (0);
#endif

#if defined (vax)
#if !defined (ultrix)
#include <sys/param.h>
#if defined (BSD)
#if BSD == 43
  printf ("vax-dec-bsd4.3\n"); exit (0);
#else
#if BSD == 199006
  printf ("vax-dec-bsd4.3reno\n"); exit (0);
#else
  printf ("vax-dec-bsd\n"); exit (0);
#endif
#endif
#else
  printf ("vax-dec-bsd\n"); exit (0);
#endif
#else
#if defined(_SIZE_T_) || defined(SIGLOST)
  struct utsname un;
  uname (&un);
  printf ("vax-dec-ultrix%s\n", un.release); exit (0);
#else
  printf ("vax-dec-ultrix\n"); exit (0);
#endif
#endif
#endif
#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
#if defined(_SIZE_T_) || defined(SIGLOST)
  struct utsname *un;
  uname (&un);
  printf ("mips-dec-ultrix%s\n", un.release); exit (0);
#else
  printf ("mips-dec-ultrix\n"); exit (0);
#endif
#endif
#endif

#if defined (alliant) && defined (i860)
  printf ("i860-alliant-bsd\n"); exit (0);
#endif

  exit (1);
}
EOF

$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`"$dummy"` &&
	{ echo "$SYSTEM_NAME"; exit; }

# Apollos put the system type in the environment.
test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; }

echo "$0: unable to guess system type" >&2

case $UNAME_MACHINE:$UNAME_SYSTEM in
    mips:Linux | mips64:Linux)
	# If we got here on MIPS GNU/Linux, output extra information.
	cat >&2 <<EOF

NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize
the system type. Please install a C compiler and try again.
EOF
	;;
esac

cat >&2 <<EOF

This script (version $timestamp), has failed to recognize the
operating system you are using. If your script is old, overwrite *all*
copies of config.guess and config.sub with the latest versions from:

  https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
and
  https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
EOF

our_year=`echo $timestamp | sed 's,-.*,,'`
thisyear=`date +%Y`
# shellcheck disable=SC2003
script_age=`expr "$thisyear" - "$our_year"`
if test "$script_age" -lt 3 ; then
   cat >&2 <<EOF

If $0 has already been updated, send the following data and any
information you think might be pertinent to config-patches@gnu.org to
provide the necessary information to handle your system.

config.guess timestamp = $timestamp

uname -m = `(uname -m) 2>/dev/null || echo unknown`
uname -r = `(uname -r) 2>/dev/null || echo unknown`
uname -s = `(uname -s) 2>/dev/null || echo unknown`
uname -v = `(uname -v) 2>/dev/null || echo unknown`

/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`

hostinfo               = `(hostinfo) 2>/dev/null`
/bin/universe          = `(/bin/universe) 2>/dev/null`
/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
/bin/arch              = `(/bin/arch) 2>/dev/null`
/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`

UNAME_MACHINE = "$UNAME_MACHINE"
UNAME_RELEASE = "$UNAME_RELEASE"
UNAME_SYSTEM  = "$UNAME_SYSTEM"
UNAME_VERSION = "$UNAME_VERSION"
EOF
fi

exit 1

# Local variables:
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "timestamp='"
# time-stamp-format: "%:y-%02m-%02d"
# time-stamp-end: "'"
# End:
Added autosetup/autosetup-config.sub.


















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#! /bin/sh
# Configuration validation subroutine script.
#   Copyright 1992-2024 Free Software Foundation, Inc.

# shellcheck disable=SC2006,SC2268,SC2162 # see below for rationale

timestamp='2024-05-27'

# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <https://www.gnu.org/licenses/>.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that
# program.  This Exception is an additional permission under section 7
# of the GNU General Public License, version 3 ("GPLv3").


# Please send patches to <config-patches@gnu.org>.
#
# Configuration subroutine to validate and canonicalize a configuration type.
# Supply the specified configuration type as an argument.
# If it is invalid, we print an error message on stderr and exit with code 1.
# Otherwise, we print the canonical config type on stdout and succeed.

# You can get the latest version of this script from:
# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub

# This file is supposed to be the same for all GNU packages
# and recognize all the CPU types, system types and aliases
# that are meaningful with *any* GNU software.
# Each package is responsible for reporting which valid configurations
# it does not support.  The user should be able to distinguish
# a failure to support a valid configuration from a meaningless
# configuration.

# The goal of this file is to map all the various variations of a given
# machine specification into a single specification in the form:
#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
# or in some cases, the newer four-part form:
#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
# It is wrong to echo any other type of specification.

# The "shellcheck disable" line above the timestamp inhibits complaints
# about features and limitations of the classic Bourne shell that were
# superseded or lifted in POSIX.  However, this script identifies a wide
# variety of pre-POSIX systems that do not have POSIX shells at all, and
# even some reasonably current systems (Solaris 10 as case-in-point) still
# have a pre-POSIX /bin/sh.

me=`echo "$0" | sed -e 's,.*/,,'`

usage="\
Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS

Canonicalize a configuration name.

Options:
  -h, --help         print this help, then exit
  -t, --time-stamp   print date of last modification, then exit
  -v, --version      print version number, then exit

Report bugs and patches to <config-patches@gnu.org>."

version="\
GNU config.sub ($timestamp)

Copyright 1992-2024 Free Software Foundation, Inc.

This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."

help="
Try '$me --help' for more information."

# Parse command line
while test $# -gt 0 ; do
  case $1 in
    --time-stamp | --time* | -t )
       echo "$timestamp" ; exit ;;
    --version | -v )
       echo "$version" ; exit ;;
    --help | --h* | -h )
       echo "$usage"; exit ;;
    -- )     # Stop option processing
       shift; break ;;
    - )	# Use stdin as input.
       break ;;
    -* )
       echo "$me: invalid option $1$help" >&2
       exit 1 ;;

    *local*)
       # First pass through any local machine types.
       echo "$1"
       exit ;;

    * )
       break ;;
  esac
done

case $# in
 0) echo "$me: missing argument$help" >&2
    exit 1;;
 1) ;;
 *) echo "$me: too many arguments$help" >&2
    exit 1;;
esac

# Split fields of configuration type
saved_IFS=$IFS
IFS="-" read field1 field2 field3 field4 <<EOF
$1
EOF
IFS=$saved_IFS

# Separate into logical components for further validation
case $1 in
	*-*-*-*-*)
		echo "Invalid configuration '$1': more than four components" >&2
		exit 1
		;;
	*-*-*-*)
		basic_machine=$field1-$field2
		basic_os=$field3-$field4
		;;
	*-*-*)
		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
		# parts
		maybe_os=$field2-$field3
		case $maybe_os in
			  cloudabi*-eabi* \
			| kfreebsd*-gnu* \
			| knetbsd*-gnu* \
			| kopensolaris*-gnu* \
			| linux-* \
			| managarm-* \
			| netbsd*-eabi* \
			| netbsd*-gnu* \
			| nto-qnx* \
			| os2-emx* \
			| rtmk-nova* \
			| storm-chaos* \
			| uclinux-gnu* \
			| uclinux-uclibc* \
			| windows-* )
				basic_machine=$field1
				basic_os=$maybe_os
				;;
			android-linux)
				basic_machine=$field1-unknown
				basic_os=linux-android
				;;
			*)
				basic_machine=$field1-$field2
				basic_os=$field3
				;;
		esac
		;;
	*-*)
		case $field1-$field2 in
			# Shorthands that happen to contain a single dash
			convex-c[12] | convex-c3[248])
				basic_machine=$field2-convex
				basic_os=
				;;
			decstation-3100)
				basic_machine=mips-dec
				basic_os=
				;;
			*-*)
				# Second component is usually, but not always the OS
				case $field2 in
					# Do not treat sunos as a manufacturer
					sun*os*)
						basic_machine=$field1
						basic_os=$field2
						;;
					# Manufacturers
					  3100* \
					| 32* \
					| 3300* \
					| 3600* \
					| 7300* \
					| acorn \
					| altos* \
					| apollo \
					| apple \
					| atari \
					| att* \
					| axis \
					| be \
					| bull \
					| cbm \
					| ccur \
					| cisco \
					| commodore \
					| convergent* \
					| convex* \
					| cray \
					| crds \
					| dec* \
					| delta* \
					| dg \
					| digital \
					| dolphin \
					| encore* \
					| gould \
					| harris \
					| highlevel \
					| hitachi* \
					| hp \
					| ibm* \
					| intergraph \
					| isi* \
					| knuth \
					| masscomp \
					| microblaze* \
					| mips* \
					| motorola* \
					| ncr* \
					| news \
					| next \
					| ns \
					| oki \
					| omron* \
					| pc533* \
					| rebel \
					| rom68k \
					| rombug \
					| semi \
					| sequent* \
					| siemens \
					| sgi* \
					| siemens \
					| sim \
					| sni \
					| sony* \
					| stratus \
					| sun \
					| sun[234]* \
					| tektronix \
					| tti* \
					| ultra \
					| unicom* \
					| wec \
					| winbond \
					| wrs)
						basic_machine=$field1-$field2
						basic_os=
						;;
					zephyr*)
						basic_machine=$field1-unknown
						basic_os=$field2
						;;
					*)
						basic_machine=$field1
						basic_os=$field2
						;;
				esac
			;;
		esac
		;;
	*)
		# Convert single-component short-hands not valid as part of
		# multi-component configurations.
		case $field1 in
			386bsd)
				basic_machine=i386-pc
				basic_os=bsd
				;;
			a29khif)
				basic_machine=a29k-amd
				basic_os=udi
				;;
			adobe68k)
				basic_machine=m68010-adobe
				basic_os=scout
				;;
			alliant)
				basic_machine=fx80-alliant
				basic_os=
				;;
			altos | altos3068)
				basic_machine=m68k-altos
				basic_os=
				;;
			am29k)
				basic_machine=a29k-none
				basic_os=bsd
				;;
			amdahl)
				basic_machine=580-amdahl
				basic_os=sysv
				;;
			amiga)
				basic_machine=m68k-unknown
				basic_os=
				;;
			amigaos | amigados)
				basic_machine=m68k-unknown
				basic_os=amigaos
				;;
			amigaunix | amix)
				basic_machine=m68k-unknown
				basic_os=sysv4
				;;
			apollo68)
				basic_machine=m68k-apollo
				basic_os=sysv
				;;
			apollo68bsd)
				basic_machine=m68k-apollo
				basic_os=bsd
				;;
			aros)
				basic_machine=i386-pc
				basic_os=aros
				;;
			aux)
				basic_machine=m68k-apple
				basic_os=aux
				;;
			balance)
				basic_machine=ns32k-sequent
				basic_os=dynix
				;;
			blackfin)
				basic_machine=bfin-unknown
				basic_os=linux
				;;
			cegcc)
				basic_machine=arm-unknown
				basic_os=cegcc
				;;
			cray)
				basic_machine=j90-cray
				basic_os=unicos
				;;
			crds | unos)
				basic_machine=m68k-crds
				basic_os=
				;;
			da30)
				basic_machine=m68k-da30
				basic_os=
				;;
			decstation | pmax | pmin | dec3100 | decstatn)
				basic_machine=mips-dec
				basic_os=
				;;
			delta88)
				basic_machine=m88k-motorola
				basic_os=sysv3
				;;
			dicos)
				basic_machine=i686-pc
				basic_os=dicos
				;;
			djgpp)
				basic_machine=i586-pc
				basic_os=msdosdjgpp
				;;
			ebmon29k)
				basic_machine=a29k-amd
				basic_os=ebmon
				;;
			es1800 | OSE68k | ose68k | ose | OSE)
				basic_machine=m68k-ericsson
				basic_os=ose
				;;
			gmicro)
				basic_machine=tron-gmicro
				basic_os=sysv
				;;
			go32)
				basic_machine=i386-pc
				basic_os=go32
				;;
			h8300hms)
				basic_machine=h8300-hitachi
				basic_os=hms
				;;
			h8300xray)
				basic_machine=h8300-hitachi
				basic_os=xray
				;;
			h8500hms)
				basic_machine=h8500-hitachi
				basic_os=hms
				;;
			harris)
				basic_machine=m88k-harris
				basic_os=sysv3
				;;
			hp300 | hp300hpux)
				basic_machine=m68k-hp
				basic_os=hpux
				;;
			hp300bsd)
				basic_machine=m68k-hp
				basic_os=bsd
				;;
			hppaosf)
				basic_machine=hppa1.1-hp
				basic_os=osf
				;;
			hppro)
				basic_machine=hppa1.1-hp
				basic_os=proelf
				;;
			i386mach)
				basic_machine=i386-mach
				basic_os=mach
				;;
			isi68 | isi)
				basic_machine=m68k-isi
				basic_os=sysv
				;;
			m68knommu)
				basic_machine=m68k-unknown
				basic_os=linux
				;;
			magnum | m3230)
				basic_machine=mips-mips
				basic_os=sysv
				;;
			merlin)
				basic_machine=ns32k-utek
				basic_os=sysv
				;;
			mingw64)
				basic_machine=x86_64-pc
				basic_os=mingw64
				;;
			mingw32)
				basic_machine=i686-pc
				basic_os=mingw32
				;;
			mingw32ce)
				basic_machine=arm-unknown
				basic_os=mingw32ce
				;;
			monitor)
				basic_machine=m68k-rom68k
				basic_os=coff
				;;
			morphos)
				basic_machine=powerpc-unknown
				basic_os=morphos
				;;
			moxiebox)
				basic_machine=moxie-unknown
				basic_os=moxiebox
				;;
			msdos)
				basic_machine=i386-pc
				basic_os=msdos
				;;
			msys)
				basic_machine=i686-pc
				basic_os=msys
				;;
			mvs)
				basic_machine=i370-ibm
				basic_os=mvs
				;;
			nacl)
				basic_machine=le32-unknown
				basic_os=nacl
				;;
			ncr3000)
				basic_machine=i486-ncr
				basic_os=sysv4
				;;
			netbsd386)
				basic_machine=i386-pc
				basic_os=netbsd
				;;
			netwinder)
				basic_machine=armv4l-rebel
				basic_os=linux
				;;
			news | news700 | news800 | news900)
				basic_machine=m68k-sony
				basic_os=newsos
				;;
			news1000)
				basic_machine=m68030-sony
				basic_os=newsos
				;;
			necv70)
				basic_machine=v70-nec
				basic_os=sysv
				;;
			nh3000)
				basic_machine=m68k-harris
				basic_os=cxux
				;;
			nh[45]000)
				basic_machine=m88k-harris
				basic_os=cxux
				;;
			nindy960)
				basic_machine=i960-intel
				basic_os=nindy
				;;
			mon960)
				basic_machine=i960-intel
				basic_os=mon960
				;;
			nonstopux)
				basic_machine=mips-compaq
				basic_os=nonstopux
				;;
			os400)
				basic_machine=powerpc-ibm
				basic_os=os400
				;;
			OSE68000 | ose68000)
				basic_machine=m68000-ericsson
				basic_os=ose
				;;
			os68k)
				basic_machine=m68k-none
				basic_os=os68k
				;;
			paragon)
				basic_machine=i860-intel
				basic_os=osf
				;;
			parisc)
				basic_machine=hppa-unknown
				basic_os=linux
				;;
			psp)
				basic_machine=mipsallegrexel-sony
				basic_os=psp
				;;
			pw32)
				basic_machine=i586-unknown
				basic_os=pw32
				;;
			rdos | rdos64)
				basic_machine=x86_64-pc
				basic_os=rdos
				;;
			rdos32)
				basic_machine=i386-pc
				basic_os=rdos
				;;
			rom68k)
				basic_machine=m68k-rom68k
				basic_os=coff
				;;
			sa29200)
				basic_machine=a29k-amd
				basic_os=udi
				;;
			sei)
				basic_machine=mips-sei
				basic_os=seiux
				;;
			sequent)
				basic_machine=i386-sequent
				basic_os=
				;;
			sps7)
				basic_machine=m68k-bull
				basic_os=sysv2
				;;
			st2000)
				basic_machine=m68k-tandem
				basic_os=
				;;
			stratus)
				basic_machine=i860-stratus
				basic_os=sysv4
				;;
			sun2)
				basic_machine=m68000-sun
				basic_os=
				;;
			sun2os3)
				basic_machine=m68000-sun
				basic_os=sunos3
				;;
			sun2os4)
				basic_machine=m68000-sun
				basic_os=sunos4
				;;
			sun3)
				basic_machine=m68k-sun
				basic_os=
				;;
			sun3os3)
				basic_machine=m68k-sun
				basic_os=sunos3
				;;
			sun3os4)
				basic_machine=m68k-sun
				basic_os=sunos4
				;;
			sun4)
				basic_machine=sparc-sun
				basic_os=
				;;
			sun4os3)
				basic_machine=sparc-sun
				basic_os=sunos3
				;;
			sun4os4)
				basic_machine=sparc-sun
				basic_os=sunos4
				;;
			sun4sol2)
				basic_machine=sparc-sun
				basic_os=solaris2
				;;
			sun386 | sun386i | roadrunner)
				basic_machine=i386-sun
				basic_os=
				;;
			sv1)
				basic_machine=sv1-cray
				basic_os=unicos
				;;
			symmetry)
				basic_machine=i386-sequent
				basic_os=dynix
				;;
			t3e)
				basic_machine=alphaev5-cray
				basic_os=unicos
				;;
			t90)
				basic_machine=t90-cray
				basic_os=unicos
				;;
			toad1)
				basic_machine=pdp10-xkl
				basic_os=tops20
				;;
			tpf)
				basic_machine=s390x-ibm
				basic_os=tpf
				;;
			udi29k)
				basic_machine=a29k-amd
				basic_os=udi
				;;
			ultra3)
				basic_machine=a29k-nyu
				basic_os=sym1
				;;
			v810 | necv810)
				basic_machine=v810-nec
				basic_os=none
				;;
			vaxv)
				basic_machine=vax-dec
				basic_os=sysv
				;;
			vms)
				basic_machine=vax-dec
				basic_os=vms
				;;
			vsta)
				basic_machine=i386-pc
				basic_os=vsta
				;;
			vxworks960)
				basic_machine=i960-wrs
				basic_os=vxworks
				;;
			vxworks68)
				basic_machine=m68k-wrs
				basic_os=vxworks
				;;
			vxworks29k)
				basic_machine=a29k-wrs
				basic_os=vxworks
				;;
			xbox)
				basic_machine=i686-pc
				basic_os=mingw32
				;;
			ymp)
				basic_machine=ymp-cray
				basic_os=unicos
				;;
			*)
				basic_machine=$1
				basic_os=
				;;
		esac
		;;
esac

# Decode 1-component or ad-hoc basic machines
case $basic_machine in
	# Here we handle the default manufacturer of certain CPU types.  It is in
	# some cases the only manufacturer, in others, it is the most popular.
	w89k)
		cpu=hppa1.1
		vendor=winbond
		;;
	op50n)
		cpu=hppa1.1
		vendor=oki
		;;
	op60c)
		cpu=hppa1.1
		vendor=oki
		;;
	ibm*)
		cpu=i370
		vendor=ibm
		;;
	orion105)
		cpu=clipper
		vendor=highlevel
		;;
	mac | mpw | mac-mpw)
		cpu=m68k
		vendor=apple
		;;
	pmac | pmac-mpw)
		cpu=powerpc
		vendor=apple
		;;

	# Recognize the various machine names and aliases which stand
	# for a CPU type and a company and sometimes even an OS.
	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
		cpu=m68000
		vendor=att
		;;
	3b*)
		cpu=we32k
		vendor=att
		;;
	bluegene*)
		cpu=powerpc
		vendor=ibm
		basic_os=cnk
		;;
	decsystem10* | dec10*)
		cpu=pdp10
		vendor=dec
		basic_os=tops10
		;;
	decsystem20* | dec20*)
		cpu=pdp10
		vendor=dec
		basic_os=tops20
		;;
	delta | 3300 | delta-motorola | 3300-motorola | motorola-delta | motorola-3300)
		cpu=m68k
		vendor=motorola
		;;
	# This used to be dpx2*, but that gets the RS6000-based
	# DPX/20 and the x86-based DPX/2-100 wrong.  See
	# https://oldskool.silicium.org/stations/bull_dpx20.htm
	# https://www.feb-patrimoine.com/english/bull_dpx2.htm
	# https://www.feb-patrimoine.com/english/unix_and_bull.htm
	dpx2 | dpx2[23]00 | dpx2[23]xx)
		cpu=m68k
		vendor=bull
		;;
	dpx2100 | dpx21xx)
		cpu=i386
		vendor=bull
		;;
	dpx20)
		cpu=rs6000
		vendor=bull
		;;
	encore | umax | mmax)
		cpu=ns32k
		vendor=encore
		;;
	elxsi)
		cpu=elxsi
		vendor=elxsi
		basic_os=${basic_os:-bsd}
		;;
	fx2800)
		cpu=i860
		vendor=alliant
		;;
	genix)
		cpu=ns32k
		vendor=ns
		;;
	h3050r* | hiux*)
		cpu=hppa1.1
		vendor=hitachi
		basic_os=hiuxwe2
		;;
	hp3k9[0-9][0-9] | hp9[0-9][0-9])
		cpu=hppa1.0
		vendor=hp
		;;
	hp9k2[0-9][0-9] | hp9k31[0-9])
		cpu=m68000
		vendor=hp
		;;
	hp9k3[2-9][0-9])
		cpu=m68k
		vendor=hp
		;;
	hp9k6[0-9][0-9] | hp6[0-9][0-9])
		cpu=hppa1.0
		vendor=hp
		;;
	hp9k7[0-79][0-9] | hp7[0-79][0-9])
		cpu=hppa1.1
		vendor=hp
		;;
	hp9k78[0-9] | hp78[0-9])
		# FIXME: really hppa2.0-hp
		cpu=hppa1.1
		vendor=hp
		;;
	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
		# FIXME: really hppa2.0-hp
		cpu=hppa1.1
		vendor=hp
		;;
	hp9k8[0-9][13679] | hp8[0-9][13679])
		cpu=hppa1.1
		vendor=hp
		;;
	hp9k8[0-9][0-9] | hp8[0-9][0-9])
		cpu=hppa1.0
		vendor=hp
		;;
	i*86v32)
		cpu=`echo "$1" | sed -e 's/86.*/86/'`
		vendor=pc
		basic_os=sysv32
		;;
	i*86v4*)
		cpu=`echo "$1" | sed -e 's/86.*/86/'`
		vendor=pc
		basic_os=sysv4
		;;
	i*86v)
		cpu=`echo "$1" | sed -e 's/86.*/86/'`
		vendor=pc
		basic_os=sysv
		;;
	i*86sol2)
		cpu=`echo "$1" | sed -e 's/86.*/86/'`
		vendor=pc
		basic_os=solaris2
		;;
	j90 | j90-cray)
		cpu=j90
		vendor=cray
		basic_os=${basic_os:-unicos}
		;;
	iris | iris4d)
		cpu=mips
		vendor=sgi
		case $basic_os in
		    irix*)
			;;
		    *)
			basic_os=irix4
			;;
		esac
		;;
	miniframe)
		cpu=m68000
		vendor=convergent
		;;
	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
		cpu=m68k
		vendor=atari
		basic_os=mint
		;;
	news-3600 | risc-news)
		cpu=mips
		vendor=sony
		basic_os=newsos
		;;
	next | m*-next)
		cpu=m68k
		vendor=next
		;;
	np1)
		cpu=np1
		vendor=gould
		;;
	op50n-* | op60c-*)
		cpu=hppa1.1
		vendor=oki
		basic_os=proelf
		;;
	pa-hitachi)
		cpu=hppa1.1
		vendor=hitachi
		basic_os=hiuxwe2
		;;
	pbd)
		cpu=sparc
		vendor=tti
		;;
	pbb)
		cpu=m68k
		vendor=tti
		;;
	pc532)
		cpu=ns32k
		vendor=pc532
		;;
	pn)
		cpu=pn
		vendor=gould
		;;
	power)
		cpu=power
		vendor=ibm
		;;
	ps2)
		cpu=i386
		vendor=ibm
		;;
	rm[46]00)
		cpu=mips
		vendor=siemens
		;;
	rtpc | rtpc-*)
		cpu=romp
		vendor=ibm
		;;
	sde)
		cpu=mipsisa32
		vendor=sde
		basic_os=${basic_os:-elf}
		;;
	simso-wrs)
		cpu=sparclite
		vendor=wrs
		basic_os=vxworks
		;;
	tower | tower-32)
		cpu=m68k
		vendor=ncr
		;;
	vpp*|vx|vx-*)
		cpu=f301
		vendor=fujitsu
		;;
	w65)
		cpu=w65
		vendor=wdc
		;;
	w89k-*)
		cpu=hppa1.1
		vendor=winbond
		basic_os=proelf
		;;
	none)
		cpu=none
		vendor=none
		;;
	leon|leon[3-9])
		cpu=sparc
		vendor=$basic_machine
		;;
	leon-*|leon[3-9]-*)
		cpu=sparc
		vendor=`echo "$basic_machine" | sed 's/-.*//'`
		;;

	*-*)
		saved_IFS=$IFS
		IFS="-" read cpu vendor <<EOF
$basic_machine
EOF
		IFS=$saved_IFS
		;;
	# We use 'pc' rather than 'unknown'
	# because (1) that's what they normally are, and
	# (2) the word "unknown" tends to confuse beginning users.
	i*86 | x86_64)
		cpu=$basic_machine
		vendor=pc
		;;
	# These rules are duplicated from below for sake of the special case above;
	# i.e. things that normalized to x86 arches should also default to "pc"
	pc98)
		cpu=i386
		vendor=pc
		;;
	x64 | amd64)
		cpu=x86_64
		vendor=pc
		;;
	# Recognize the basic CPU types without company name.
	*)
		cpu=$basic_machine
		vendor=unknown
		;;
esac

unset -v basic_machine

# Decode basic machines in the full and proper CPU-Company form.
case $cpu-$vendor in
	# Here we handle the default manufacturer of certain CPU types in canonical form.
	# It is in some cases the only manufacturer, in others, it is the most popular.
	c[12]-convex | c[12]-unknown | c3[248]-convex | c3[248]-unknown)
		vendor=convex
		basic_os=${basic_os:-bsd}
		;;
	craynv-unknown)
		vendor=cray
		basic_os=${basic_os:-unicosmp}
		;;
	c90-unknown | c90-cray)
		vendor=cray
		basic_os=${basic_os:-unicos}
		;;
	fx80-unknown)
		vendor=alliant
		;;
	romp-unknown)
		vendor=ibm
		;;
	mmix-unknown)
		vendor=knuth
		;;
	microblaze-unknown | microblazeel-unknown)
		vendor=xilinx
		;;
	rs6000-unknown)
		vendor=ibm
		;;
	vax-unknown)
		vendor=dec
		;;
	pdp11-unknown)
		vendor=dec
		;;
	we32k-unknown)
		vendor=att
		;;
	cydra-unknown)
		vendor=cydrome
		;;
	i370-ibm*)
		vendor=ibm
		;;
	orion-unknown)
		vendor=highlevel
		;;
	xps-unknown | xps100-unknown)
		cpu=xps100
		vendor=honeywell
		;;

	# Here we normalize CPU types with a missing or matching vendor
	armh-unknown | armh-alt)
		cpu=armv7l
		vendor=alt
		basic_os=${basic_os:-linux-gnueabihf}
		;;

	# Normalized CPU+vendor pairs that imply an OS, if not otherwise specified
	m68k-isi)
		basic_os=${basic_os:-sysv}
		;;
	m68k-sony)
		basic_os=${basic_os:-newsos}
		;;
	m68k-tektronix)
		basic_os=${basic_os:-bsd}
		;;
	m88k-harris)
		basic_os=${basic_os:-sysv3}
		;;
	i386-bull | m68k-bull)
		basic_os=${basic_os:-sysv3}
		;;
	rs6000-bull)
		basic_os=${basic_os:-bosx}
		;;
	mips-sni)
		basic_os=${basic_os:-sysv4}
		;;

	# Here we normalize CPU types irrespective of the vendor
	amd64-*)
		cpu=x86_64
		;;
	blackfin-*)
		cpu=bfin
		basic_os=${basic_os:-linux}
		;;
	c54x-*)
		cpu=tic54x
		;;
	c55x-*)
		cpu=tic55x
		;;
	c6x-*)
		cpu=tic6x
		;;
	e500v[12]-*)
		cpu=powerpc
		basic_os=${basic_os}"spe"
		;;
	mips3*-*)
		cpu=mips64
		;;
	ms1-*)
		cpu=mt
		;;
	m68knommu-*)
		cpu=m68k
		basic_os=${basic_os:-linux}
		;;
	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
		cpu=s12z
		;;
	openrisc-*)
		cpu=or32
		;;
	parisc-*)
		cpu=hppa
		basic_os=${basic_os:-linux}
		;;
	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
		cpu=i586
		;;
	pentiumpro-* | p6-* | 6x86-* | athlon-* | athlon_*-*)
		cpu=i686
		;;
	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
		cpu=i686
		;;
	pentium4-*)
		cpu=i786
		;;
	ppc-* | ppcbe-*)
		cpu=powerpc
		;;
	ppcle-* | powerpclittle-*)
		cpu=powerpcle
		;;
	ppc64-*)
		cpu=powerpc64
		;;
	ppc64le-* | powerpc64little-*)
		cpu=powerpc64le
		;;
	sb1-*)
		cpu=mipsisa64sb1
		;;
	sb1el-*)
		cpu=mipsisa64sb1el
		;;
	sh5e[lb]-*)
		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
		;;
	spur-*)
		cpu=spur
		;;
	strongarm-* | thumb-*)
		cpu=arm
		;;
	tx39-*)
		cpu=mipstx39
		;;
	tx39el-*)
		cpu=mipstx39el
		;;
	xscale-* | xscalee[bl]-*)
		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
		;;
	arm64-* | aarch64le-*)
		cpu=aarch64
		;;

	# Recognize the canonical CPU Types that limit and/or modify the
	# company names they are paired with.
	cr16-*)
		basic_os=${basic_os:-elf}
		;;
	crisv32-* | etraxfs*-*)
		cpu=crisv32
		vendor=axis
		;;
	cris-* | etrax*-*)
		cpu=cris
		vendor=axis
		;;
	crx-*)
		basic_os=${basic_os:-elf}
		;;
	neo-tandem)
		cpu=neo
		vendor=tandem
		;;
	nse-tandem)
		cpu=nse
		vendor=tandem
		;;
	nsr-tandem)
		cpu=nsr
		vendor=tandem
		;;
	nsv-tandem)
		cpu=nsv
		vendor=tandem
		;;
	nsx-tandem)
		cpu=nsx
		vendor=tandem
		;;
	mipsallegrexel-sony)
		cpu=mipsallegrexel
		vendor=sony
		;;
	tile*-*)
		basic_os=${basic_os:-linux-gnu}
		;;

	*)
		# Recognize the canonical CPU types that are allowed with any
		# company name.
		case $cpu in
			  1750a \
			| 580 \
			| [cjt]90 \
			| a29k \
			| aarch64 \
			| aarch64_be \
			| aarch64c \
			| abacus \
			| alpha \
			| alpha64 \
			| alpha64ev56 \
			| alpha64ev6[78] \
			| alpha64ev[4-8] \
			| alpha64pca5[67] \
			| alphaev56 \
			| alphaev6[78] \
			| alphaev[4-8] \
			| alphapca5[67] \
			| am33_2.0 \
			| amdgcn \
			| arc \
			| arc32 \
			| arc64 \
			| arceb \
			| arm \
			| arm64e \
			| arm64ec \
			| arm[lb]e \
			| arme[lb] \
			| armv* \
			| asmjs \
			| avr \
			| avr32 \
			| ba \
			| be32 \
			| be64 \
			| bfin \
			| bpf \
			| bs2000 \
			| c30 \
			| c4x \
			| c8051 \
			| c[123]* \
			| clipper \
			| craynv \
			| csky \
			| cydra \
			| d10v \
			| d30v \
			| dlx \
			| dsp16xx \
			| e2k \
			| elxsi \
			| epiphany \
			| f30[01] \
			| f700 \
			| fido \
			| fr30 \
			| frv \
			| ft32 \
			| fx80 \
			| h8300 \
			| h8500 \
			| hexagon \
			| hppa \
			| hppa1.[01] \
			| hppa2.0 \
			| hppa2.0[nw] \
			| hppa64 \
			| i*86 \
			| i370 \
			| i860 \
			| i960 \
			| ia16 \
			| ia64 \
			| ip2k \
			| iq2000 \
			| javascript \
			| k1om \
			| kvx \
			| le32 \
			| le64 \
			| lm32 \
			| loongarch32 \
			| loongarch64 \
			| m32c \
			| m32r \
			| m32rle \
			| m5200 \
			| m68000 \
			| m680[012346]0 \
			| m6811 \
			| m6812 \
			| m68360 \
			| m683?2 \
			| m68hc11 \
			| m68hc12 \
			| m68hcs12x \
			| m68k \
			| m88110 \
			| m88k \
			| maxq \
			| mb \
			| mcore \
			| mep \
			| metag \
			| microblaze \
			| microblazeel \
			| mips* \
			| mmix \
			| mn10200 \
			| mn10300 \
			| moxie \
			| msp430 \
			| mt \
			| nanomips* \
			| nds32 \
			| nds32be \
			| nds32le \
			| nfp \
			| nios \
			| nios2 \
			| nios2eb \
			| nios2el \
			| none \
			| np1 \
			| ns16k \
			| ns32k \
			| nvptx \
			| open8 \
			| or1k* \
			| or32 \
			| orion \
			| pdp10 \
			| pdp11 \
			| picochip \
			| pj \
			| pjl \
			| pn \
			| power \
			| powerpc \
			| powerpc64 \
			| powerpc64le \
			| powerpcle \
			| powerpcspe \
			| pru \
			| pyramid \
			| riscv \
			| riscv32 \
			| riscv32be \
			| riscv64 \
			| riscv64be \
			| rl78 \
			| romp \
			| rs6000 \
			| rx \
			| s390 \
			| s390x \
			| score \
			| sh \
			| sh64 \
			| sh64le \
			| sh[12345][lb]e \
			| sh[1234] \
			| sh[1234]e[lb] \
			| sh[23]e \
			| sh[23]ele \
			| sh[24]a \
			| sh[24]ae[lb] \
			| sh[lb]e \
			| she[lb] \
			| shl \
			| sparc \
			| sparc64 \
			| sparc64b \
			| sparc64v \
			| sparc86x \
			| sparclet \
			| sparclite \
			| sparcv8 \
			| sparcv9 \
			| sparcv9b \
			| sparcv9v \
			| spu \
			| sv1 \
			| sx* \
			| tahoe \
			| thumbv7* \
			| tic30 \
			| tic4x \
			| tic54x \
			| tic55x \
			| tic6x \
			| tic80 \
			| tron \
			| ubicom32 \
			| v70 \
			| v810 \
			| v850 \
			| v850e \
			| v850e1 \
			| v850e2 \
			| v850e2v3 \
			| v850es \
			| vax \
			| vc4 \
			| visium \
			| w65 \
			| wasm32 \
			| wasm64 \
			| we32k \
			| x86 \
			| x86_64 \
			| xc16x \
			| xgate \
			| xps100 \
			| xstormy16 \
			| xtensa* \
			| ymp \
			| z80 \
			| z8k)
				;;

			*)
				echo "Invalid configuration '$1': machine '$cpu-$vendor' not recognized" 1>&2
				exit 1
				;;
		esac
		;;
esac

# Here we canonicalize certain aliases for manufacturers.
case $vendor in
	digital*)
		vendor=dec
		;;
	commodore*)
		vendor=cbm
		;;
	*)
		;;
esac

# Decode manufacturer-specific aliases for certain operating systems.

if test x"$basic_os" != x
then

# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
# set os.
obj=
case $basic_os in
	gnu/linux*)
		kernel=linux
		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
		;;
	os2-emx)
		kernel=os2
		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
		;;
	nto-qnx*)
		kernel=nto
		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
		;;
	*-*)
		saved_IFS=$IFS
		IFS="-" read kernel os <<EOF
$basic_os
EOF
		IFS=$saved_IFS
		;;
	# Default OS when just kernel was specified
	nto*)
		kernel=nto
		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
		;;
	linux*)
		kernel=linux
		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
		;;
	managarm*)
		kernel=managarm
		os=`echo "$basic_os" | sed -e 's|managarm|mlibc|'`
		;;
	*)
		kernel=
		os=$basic_os
		;;
esac

# Now, normalize the OS (knowing we just have one component, it's not a kernel,
# etc.)
case $os in
	# First match some system type aliases that might get confused
	# with valid system types.
	# solaris* is a basic system type, with this one exception.
	auroraux)
		os=auroraux
		;;
	bluegene*)
		os=cnk
		;;
	solaris1 | solaris1.*)
		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
		;;
	solaris)
		os=solaris2
		;;
	unixware*)
		os=sysv4.2uw
		;;
	# The marketing names for NeXT's operating systems were
	# NeXTSTEP, NeXTSTEP 2, OpenSTEP 3, OpenSTEP 4.  'openstep' is
	# mapped to 'openstep3', but 'openstep1' and 'openstep2' are
	# mapped to 'nextstep' and 'nextstep2', consistent with the
	# treatment of SunOS/Solaris.
	ns | ns1 | nextstep | nextstep1 | openstep1)
		os=nextstep
		;;
	ns2 | nextstep2 | openstep2)
		os=nextstep2
		;;
	ns3 | nextstep3 | openstep | openstep3)
		os=openstep3
		;;
	ns4 | nextstep4 | openstep4)
		os=openstep4
		;;
	# es1800 is here to avoid being matched by es* (a different OS)
	es1800*)
		os=ose
		;;
	# Some version numbers need modification
	chorusos*)
		os=chorusos
		;;
	isc)
		os=isc2.2
		;;
	sco6)
		os=sco5v6
		;;
	sco5)
		os=sco3.2v5
		;;
	sco4)
		os=sco3.2v4
		;;
	sco3.2.[4-9]*)
		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
		;;
	sco*v* | scout)
		# Don't match below
		;;
	sco*)
		os=sco3.2v2
		;;
	psos*)
		os=psos
		;;
	qnx*)
		os=qnx
		;;
	hiux*)
		os=hiuxwe2
		;;
	lynx*178)
		os=lynxos178
		;;
	lynx*5)
		os=lynxos5
		;;
	lynxos*)
		# don't get caught up in next wildcard
		;;
	lynx*)
		os=lynxos
		;;
	mac[0-9]*)
		os=`echo "$os" | sed -e 's|mac|macos|'`
		;;
	opened*)
		os=openedition
		;;
	os400*)
		os=os400
		;;
	sunos5*)
		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
		;;
	sunos6*)
		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
		;;
	wince*)
		os=wince
		;;
	utek*)
		os=bsd
		vendor=`echo "$vendor" | sed -e 's|^unknown$|tektronix|'`
		;;
	dynix*)
		os=bsd
		;;
	acis*)
		os=aos
		;;
	atheos*)
		os=atheos
		;;
	syllable*)
		os=syllable
		;;
	386bsd)
		os=bsd
		;;
	ctix*)
		os=sysv
		vendor=`echo "$vendor" | sed -e 's|^unknown$|convergent|'`
		;;
	uts*)
		os=sysv
		;;
	nova*)
		kernel=rtmk
		os=nova
		;;
	# Preserve the version number of sinix5.
	sinix5.*)
		os=`echo "$os" | sed -e 's|sinix|sysv|'`
		vendor=`echo "$vendor" | sed -e 's|^unknown$|sni|'`
		;;
	sinix*)
		os=sysv4
		vendor=`echo "$vendor" | sed -e 's|^unknown$|sni|'`
		;;
	tpf*)
		os=tpf
		;;
	triton*)
		os=sysv3
		;;
	oss*)
		os=sysv3
		;;
	svr4*)
		os=sysv4
		;;
	svr3)
		os=sysv3
		;;
	sysvr4)
		os=sysv4
		;;
	ose*)
		os=ose
		;;
	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
		os=mint
		;;
	dicos*)
		os=dicos
		;;
	pikeos*)
		# Until real need of OS specific support for
		# particular features comes up, bare metal
		# configurations are quite functional.
		case $cpu in
		    arm*)
			os=eabi
			;;
		    *)
			os=
			obj=elf
			;;
		esac
		;;
	aout* | coff* | elf* | pe*)
		# These are machine code file formats, not OSes
		obj=$os
		os=
		;;
	*)
		# No normalization, but not necessarily accepted, that comes below.
		;;
esac

else

# Here we handle the default operating systems that come with various machines.
# The value should be what the vendor currently ships out the door with their
# machine or put another way, the most popular os provided with the machine.

# Note that if you're going to try to match "-MANUFACTURER" here (say,
# "-sun"), then you have to tell the case statement up towards the top
# that MANUFACTURER isn't an operating system.  Otherwise, code above
# will signal an error saying that MANUFACTURER isn't an operating
# system, and we'll never get to this point.

kernel=
obj=
case $cpu-$vendor in
	score-*)
		os=
		obj=elf
		;;
	spu-*)
		os=
		obj=elf
		;;
	*-acorn)
		os=riscix1.2
		;;
	arm*-rebel)
		kernel=linux
		os=gnu
		;;
	arm*-semi)
		os=
		obj=aout
		;;
	c4x-* | tic4x-*)
		os=
		obj=coff
		;;
	c8051-*)
		os=
		obj=elf
		;;
	clipper-intergraph)
		os=clix
		;;
	hexagon-*)
		os=
		obj=elf
		;;
	tic54x-*)
		os=
		obj=coff
		;;
	tic55x-*)
		os=
		obj=coff
		;;
	tic6x-*)
		os=
		obj=coff
		;;
	# This must come before the *-dec entry.
	pdp10-*)
		os=tops20
		;;
	pdp11-*)
		os=none
		;;
	*-dec | vax-*)
		os=ultrix4.2
		;;
	m68*-apollo)
		os=domain
		;;
	i386-sun)
		os=sunos4.0.2
		;;
	m68000-sun)
		os=sunos3
		;;
	m68*-cisco)
		os=
		obj=aout
		;;
	mep-*)
		os=
		obj=elf
		;;
	# The -sgi and -siemens entries must be before the mips- entry
	# or we get the wrong os.
	*-sgi)
		os=irix
		;;
	*-siemens)
		os=sysv4
		;;
	mips*-cisco)
		os=
		obj=elf
		;;
	mips*-*|nanomips*-*)
		os=
		obj=elf
		;;
	or32-*)
		os=
		obj=coff
		;;
	# This must be before the sparc-* entry or we get the wrong os.
	*-tti)
		os=sysv3
		;;
	sparc-* | *-sun)
		os=sunos4.1.1
		;;
	pru-*)
		os=
		obj=elf
		;;
	*-be)
		os=beos
		;;
	*-ibm)
		os=aix
		;;
	*-knuth)
		os=mmixware
		;;
	*-wec)
		os=proelf
		;;
	*-winbond)
		os=proelf
		;;
	*-oki)
		os=proelf
		;;
	*-hp)
		os=hpux
		;;
	*-hitachi)
		os=hiuxwe2
		;;
	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
		os=sysv
		;;
	*-cbm)
		os=amigaos
		;;
	*-dg)
		os=dgux
		;;
	*-dolphin)
		os=sysv3
		;;
	m68k-ccur)
		os=rtu
		;;
	m88k-omron*)
		os=luna
		;;
	*-next)
		os=nextstep
		;;
	*-sequent)
		os=ptx
		;;
	*-crds)
		os=unos
		;;
	*-ns)
		os=genix
		;;
	i370-*)
		os=mvs
		;;
	*-gould)
		os=sysv
		;;
	*-highlevel)
		os=bsd
		;;
	*-encore)
		os=bsd
		;;
	*-masscomp)
		os=rtu
		;;
	f30[01]-fujitsu | f700-fujitsu)
		os=uxpv
		;;
	*-rom68k)
		os=
		obj=coff
		;;
	*-*bug)
		os=
		obj=coff
		;;
	*-apple)
		os=macos
		;;
	*-atari*)
		os=mint
		;;
	*-wrs)
		os=vxworks
		;;
	*)
		os=none
		;;
esac

fi

# Now, validate our (potentially fixed-up) individual pieces (OS, OBJ).

case $os in
	# Sometimes we do "kernel-libc", so those need to count as OSes.
	llvm* | musl* | newlib* | relibc* | uclibc*)
		;;
	# Likewise for "kernel-abi"
	eabi* | gnueabi*)
		;;
	# VxWorks passes extra cpu info in the 4th filed.
	simlinux | simwindows | spe)
		;;
	# See `case $cpu-$os` validation below
	ghcjs)
		;;
	# Now accept the basic system types.
	# Each alternative MUST end in a * to match a version number.
	  abug \
	| aix* \
	| amdhsa* \
	| amigados* \
	| amigaos* \
	| android* \
	| aof* \
	| aos* \
	| aros* \
	| atheos* \
	| auroraux* \
	| aux* \
	| beos* \
	| bitrig* \
	| bme* \
	| bosx* \
	| bsd* \
	| cegcc* \
	| chorusos* \
	| chorusrdb* \
	| clix* \
	| cloudabi* \
	| cnk* \
	| conix* \
	| cos* \
	| cxux* \
	| cygwin* \
	| darwin* \
	| dgux* \
	| dicos* \
	| dnix* \
	| domain* \
	| dragonfly* \
	| drops* \
	| ebmon* \
	| ecoff* \
	| ekkobsd* \
	| emscripten* \
	| emx* \
	| es* \
	| fiwix* \
	| freebsd* \
	| fuchsia* \
	| genix* \
	| genode* \
	| glidix* \
	| gnu* \
	| go32* \
	| haiku* \
	| hcos* \
	| hiux* \
	| hms* \
	| hpux* \
	| ieee* \
	| interix* \
	| ios* \
	| iris* \
	| irix* \
	| ironclad* \
	| isc* \
	| its* \
	| l4re* \
	| libertybsd* \
	| lites* \
	| lnews* \
	| luna* \
	| lynxos* \
	| mach* \
	| macos* \
	| magic* \
	| mbr* \
	| midipix* \
	| midnightbsd* \
	| mingw32* \
	| mingw64* \
	| minix* \
	| mint* \
	| mirbsd* \
	| mks* \
	| mlibc* \
	| mmixware* \
	| mon960* \
	| morphos* \
	| moss* \
	| moxiebox* \
	| mpeix* \
	| mpw* \
	| msdos* \
	| msys* \
	| mvs* \
	| nacl* \
	| netbsd* \
	| netware* \
	| newsos* \
	| nextstep* \
	| nindy* \
	| nonstopux* \
	| nova* \
	| nsk* \
	| nucleus* \
	| nx6 \
	| nx7 \
	| oabi* \
	| ohos* \
	| onefs* \
	| openbsd* \
	| openedition* \
	| openstep* \
	| os108* \
	| os2* \
	| os400* \
	| os68k* \
	| os9* \
	| ose* \
	| osf* \
	| oskit* \
	| osx* \
	| palmos* \
	| phoenix* \
	| plan9* \
	| powermax* \
	| powerunix* \
	| proelf* \
	| psos* \
	| psp* \
	| ptx* \
	| pw32* \
	| qnx* \
	| rdos* \
	| redox* \
	| rhapsody* \
	| riscix* \
	| riscos* \
	| rtems* \
	| rtmk* \
	| rtu* \
	| scout* \
	| secbsd* \
	| sei* \
	| serenity* \
	| sim* \
	| skyos* \
	| solaris* \
	| solidbsd* \
	| sortix* \
	| storm-chaos* \
	| sunos \
	| sunos[34]* \
	| superux* \
	| syllable* \
	| sym* \
	| sysv* \
	| tenex* \
	| tirtos* \
	| toppers* \
	| tops10* \
	| tops20* \
	| tpf* \
	| tvos* \
	| twizzler* \
	| uclinux* \
	| udi* \
	| udk* \
	| ultrix* \
	| unicos* \
	| uniplus* \
	| unleashed* \
	| unos* \
	| uwin* \
	| uxpv* \
	| v88r* \
	|*vms* \
	| vos* \
	| vsta* \
	| vxsim* \
	| vxworks* \
	| wasi* \
	| watchos* \
	| wince* \
	| windiss* \
	| windows* \
	| winnt* \
	| xenix* \
	| xray* \
	| zephyr* \
	| zvmoe* )
		;;
	# This one is extra strict with allowed versions
	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
		# Don't forget version if it is 3.2v4 or newer.
		;;
	# This refers to builds using the UEFI calling convention
	# (which depends on the architecture) and PE file format.
	# Note that this is both a different calling convention and
	# different file format than that of GNU-EFI
	# (x86_64-w64-mingw32).
	uefi)
		;;
	none)
		;;
	kernel* | msvc* )
		# Restricted further below
		;;
	'')
		if test x"$obj" = x
		then
			echo "Invalid configuration '$1': Blank OS only allowed with explicit machine code file format" 1>&2
		fi
		;;
	*)
		echo "Invalid configuration '$1': OS '$os' not recognized" 1>&2
		exit 1
		;;
esac

case $obj in
	aout* | coff* | elf* | pe*)
		;;
	'')
		# empty is fine
		;;
	*)
		echo "Invalid configuration '$1': Machine code format '$obj' not recognized" 1>&2
		exit 1
		;;
esac

# Here we handle the constraint that a (synthetic) cpu and os are
# valid only in combination with each other and nowhere else.
case $cpu-$os in
	# The "javascript-unknown-ghcjs" triple is used by GHC; we
	# accept it here in order to tolerate that, but reject any
	# variations.
	javascript-ghcjs)
		;;
	javascript-* | *-ghcjs)
		echo "Invalid configuration '$1': cpu '$cpu' is not valid with os '$os$obj'" 1>&2
		exit 1
		;;
esac

# As a final step for OS-related things, validate the OS-kernel combination
# (given a valid OS), if there is a kernel.
case $kernel-$os-$obj in
	linux-gnu*- | linux-android*- | linux-dietlibc*- | linux-llvm*- \
		    | linux-mlibc*- | linux-musl*- | linux-newlib*- \
		    | linux-relibc*- | linux-uclibc*- | linux-ohos*- )
		;;
	uclinux-uclibc*- | uclinux-gnu*- )
		;;
	managarm-mlibc*- | managarm-kernel*- )
		;;
	windows*-msvc*-)
		;;
	-dietlibc*- | -llvm*- | -mlibc*- | -musl*- | -newlib*- | -relibc*- \
		    | -uclibc*- )
		# These are just libc implementations, not actual OSes, and thus
		# require a kernel.
		echo "Invalid configuration '$1': libc '$os' needs explicit kernel." 1>&2
		exit 1
		;;
	-kernel*- )
		echo "Invalid configuration '$1': '$os' needs explicit kernel." 1>&2
		exit 1
		;;
	*-kernel*- )
		echo "Invalid configuration '$1': '$kernel' does not support '$os'." 1>&2
		exit 1
		;;
	*-msvc*- )
		echo "Invalid configuration '$1': '$os' needs 'windows'." 1>&2
		exit 1
		;;
	kfreebsd*-gnu*- | knetbsd*-gnu*- | netbsd*-gnu*- | kopensolaris*-gnu*-)
		;;
	vxworks-simlinux- | vxworks-simwindows- | vxworks-spe-)
		;;
	nto-qnx*-)
		;;
	os2-emx-)
		;;
	rtmk-nova-)
		;;
	*-eabi*- | *-gnueabi*-)
		;;
	none--*)
		# None (no kernel, i.e. freestanding / bare metal),
		# can be paired with an machine code file format
		;;
	-*-)
		# Blank kernel with real OS is always fine.
		;;
	--*)
		# Blank kernel and OS with real machine code file format is always fine.
		;;
	*-*-*)
		echo "Invalid configuration '$1': Kernel '$kernel' not known to work with OS '$os'." 1>&2
		exit 1
		;;
esac

# Here we handle the case where we know the os, and the CPU type, but not the
# manufacturer.  We pick the logical manufacturer.
case $vendor in
	unknown)
		case $cpu-$os in
			*-riscix*)
				vendor=acorn
				;;
			*-sunos* | *-solaris*)
				vendor=sun
				;;
			*-cnk* | *-aix*)
				vendor=ibm
				;;
			*-beos*)
				vendor=be
				;;
			*-hpux*)
				vendor=hp
				;;
			*-mpeix*)
				vendor=hp
				;;
			*-hiux*)
				vendor=hitachi
				;;
			*-unos*)
				vendor=crds
				;;
			*-dgux*)
				vendor=dg
				;;
			*-luna*)
				vendor=omron
				;;
			*-genix*)
				vendor=ns
				;;
			*-clix*)
				vendor=intergraph
				;;
			*-mvs* | *-opened*)
				vendor=ibm
				;;
			*-os400*)
				vendor=ibm
				;;
			s390-* | s390x-*)
				vendor=ibm
				;;
			*-ptx*)
				vendor=sequent
				;;
			*-tpf*)
				vendor=ibm
				;;
			*-vxsim* | *-vxworks* | *-windiss*)
				vendor=wrs
				;;
			*-aux*)
				vendor=apple
				;;
			*-hms*)
				vendor=hitachi
				;;
			*-mpw* | *-macos*)
				vendor=apple
				;;
			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
				vendor=atari
				;;
			*-vos*)
				vendor=stratus
				;;
		esac
		;;
esac

echo "$cpu-$vendor${kernel:+-$kernel}${os:+-$os}${obj:+-$obj}"
exit

# Local variables:
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "timestamp='"
# time-stamp-format: "%:y-%02m-%02d"
# time-stamp-end: "'"
# End:
Added autosetup/autosetup-find-tclsh.
















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#!/bin/sh
# Looks for a suitable tclsh or jimsh in the PATH
# If not found, builds a bootstrap jimsh in current dir from source
# Prefer $autosetup_tclsh if is set in the environment (unless ./jimsh0 works)
# If an argument is given, use that as the test instead of autosetup-test-tclsh
d="`dirname "$0"`"
for tclsh in ./jimsh0 $autosetup_tclsh jimsh tclsh tclsh8.5 tclsh8.6 tclsh8.7; do
    { $tclsh "$d/${1-autosetup-test-tclsh}"; } 2>/dev/null && exit 0
done
echo 1>&2 "No installed jimsh or tclsh, building local bootstrap jimsh0"
for cc in ${CC_FOR_BUILD:-cc} gcc; do
    { $cc -o jimsh0 "$d/jimsh0.c"; } >/dev/null 2>&1 || continue
    ./jimsh0 "$d/${1-autosetup-test-tclsh}" && exit 0
done
echo 1>&2 "No working C compiler found. Tried ${CC_FOR_BUILD:-cc} and gcc."
echo false
Added autosetup/autosetup-test-tclsh.




















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# A small Tcl script to verify that the chosen
# interpreter works. Sometimes we might e.g. pick up
# an interpreter for a different arch.
# Outputs the full path to the interpreter

if {[catch {info version} version] == 0} {
	# This is Jim Tcl
	if {$version >= 0.72} {
		# Ensure that regexp works
		regexp (a.*?) a
		puts [info nameofexecutable]
		exit 0
	}
} elseif {[catch {info tclversion} version] == 0} {
	if {$version >= 8.5 && ![string match 8.5a* [info patchlevel]]} {
		puts [info nameofexecutable]
		exit 0
	}
}
exit 1
Added autosetup/cc-db.tcl.















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# Copyright (c) 2011 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# The 'cc-db' module provides a knowledge-base of system idiosyncrasies.
# In general, this module can always be included.

use cc

options {}

# openbsd needs sys/types.h to detect some system headers
cc-include-needs sys/socket.h sys/types.h
cc-include-needs netinet/in.h sys/types.h
Added autosetup/cc-lib.tcl.



























































































































































































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# Copyright (c) 2011 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# Provides a library of common tests on top of the 'cc' module.

use cc

# @cc-check-lfs
#
# The equivalent of the 'AC_SYS_LARGEFILE' macro.
#
# defines 'HAVE_LFS' if LFS is available,
# and defines '_FILE_OFFSET_BITS=64' if necessary
#
# Returns 1 if 'LFS' is available or 0 otherwise
#
proc cc-check-lfs {} {
	cc-check-includes sys/types.h
	msg-checking "Checking if -D_FILE_OFFSET_BITS=64 is needed..."
	set lfs 1
	if {[msg-quiet cc-with {-includes sys/types.h} {cc-check-sizeof off_t}] == 8} {
		msg-result no
	} elseif {[msg-quiet cc-with {-includes sys/types.h -cflags -D_FILE_OFFSET_BITS=64} {cc-check-sizeof off_t}] == 8} {
		define _FILE_OFFSET_BITS 64
		msg-result yes
	} else {
		set lfs 0
		msg-result none
	}
	define-feature lfs $lfs
	return $lfs
}

# @cc-check-endian
#
# The equivalent of the 'AC_C_BIGENDIAN' macro.
#
# defines 'HAVE_BIG_ENDIAN' if endian is known to be big,
# or 'HAVE_LITTLE_ENDIAN' if endian is known to be little.
#
# Returns 1 if determined, or 0 if not.
#
proc cc-check-endian {} {
	cc-check-includes sys/types.h sys/param.h
	set rc 0
	msg-checking "Checking endian..."
	cc-with {-includes {sys/types.h sys/param.h}} {
		if {[cctest -code {
			#if !defined(BIG_ENDIAN) || !defined(BYTE_ORDER)
				#error unknown
			#elif BYTE_ORDER != BIG_ENDIAN
				#error little
			#endif
		}]} {
			define-feature big-endian
			msg-result "big"
			set rc 1
		} elseif {[cctest -code {
			#if !defined(LITTLE_ENDIAN) || !defined(BYTE_ORDER)
				#error unknown
			#elif BYTE_ORDER != LITTLE_ENDIAN
				#error big
			#endif
		}]} {
			define-feature little-endian
			msg-result "little"
			set rc 1
		} else {
			msg-result "unknown"
		}
	}
	return $rc
}

# @cc-check-flags flag ?...?
#
# Checks whether the given C/C++ compiler flags can be used. Defines feature
# names prefixed with 'HAVE_CFLAG' and 'HAVE_CXXFLAG' respectively, and
# appends working flags to '-cflags' and 'AS_CFLAGS' or 'AS_CXXFLAGS'.
proc cc-check-flags {args} {
	set result 1
	array set opts [cc-get-settings]
	switch -exact -- $opts(-lang) {
		c++ {
			set lang C++
			set prefix CXXFLAG
		}
		c {
			set lang C
			set prefix CFLAG
		}
		default {
			autosetup-error "cc-check-flags failed with unknown language: $opts(-lang)"
		}
	}
	foreach flag $args {
		msg-checking "Checking whether the $lang compiler accepts $flag..."
		if {[cctest -cflags $flag]} {
			msg-result yes
			define-feature $prefix$flag
			cc-with [list -cflags [list $flag]]
			define-append AS_${prefix}S $flag
		} else {
			msg-result no
			set result 0
		}
	}
	return $result
}

# @cc-check-standards ver ?...?
#
# Checks whether the C/C++ compiler accepts one of the specified '-std=$ver'
# options, and appends the first working one to '-cflags' and 'AS_CFLAGS' or
# 'AS_CXXFLAGS'.
proc cc-check-standards {args} {
	array set opts [cc-get-settings]
	foreach std $args {
		if {[cc-check-flags -std=$std]} {
			return $std
		}
	}
	return ""
}

# Checks whether $keyword is usable as alignof
proc cctest_alignof {keyword} {
	msg-checking "Checking for $keyword..."
	if {[cctest -code "int x = ${keyword}(char), y = ${keyword}('x');"]} then {
		msg-result ok
		define-feature $keyword
	} else {
		msg-result "not found"
	}
}

# @cc-check-c11
#
# Checks for several C11/C++11 extensions and their alternatives. Currently
# checks for '_Static_assert', '_Alignof', '__alignof__', '__alignof'.
proc cc-check-c11 {} {
	msg-checking "Checking for _Static_assert..."
	if {[cctest -code {
		_Static_assert(1, "static assertions are available");
	}]} then {
		msg-result ok
		define-feature _Static_assert
	} else {
		msg-result "not found"
	}

	cctest_alignof _Alignof
	cctest_alignof __alignof__
	cctest_alignof __alignof
}

# @cc-check-alloca
#
# The equivalent of the 'AC_FUNC_ALLOCA' macro.
#
# Checks for the existence of 'alloca'
# defines 'HAVE_ALLOCA' and returns 1 if it exists.
proc cc-check-alloca {} {
	cc-check-some-feature alloca {
		cctest -includes alloca.h -code { alloca (2 * sizeof (int)); }
	}
}

# @cc-signal-return-type
#
# The equivalent of the 'AC_TYPE_SIGNAL' macro.
#
# defines 'RETSIGTYPE' to 'int' or 'void'.
proc cc-signal-return-type {} {
	msg-checking "Checking return type of signal handlers..."
	cc-with {-includes {sys/types.h signal.h}} {
		if {[cctest -code {return *(signal (0, 0)) (0) == 1;}]} {
				set type int
		} else {
				set type void
		}
		define RETSIGTYPE $type
		msg-result $type
	}
}
Added autosetup/cc-shared.tcl.

















































































































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# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# The 'cc-shared' module provides support for shared libraries and shared objects.
# It defines the following variables:
#
## SH_CFLAGS         Flags to use compiling sources destined for a shared library
## SH_LDFLAGS        Flags to use linking (creating) a shared library
## SH_SOPREFIX       Prefix to use to set the soname when creating a shared library
## SH_SOFULLPATH     Set to 1 if the shared library soname should include the full install path
## SH_SOEXT          Extension for shared libs
## SH_SOEXTVER       Format for versioned shared libs - %s = version
## SHOBJ_CFLAGS      Flags to use compiling sources destined for a shared object
## SHOBJ_LDFLAGS     Flags to use linking a shared object, undefined symbols allowed
## SHOBJ_LDFLAGS_R   - as above, but all symbols must be resolved
## SH_LINKRPATH      Format for setting the rpath when linking an executable, %s = path
## SH_LINKFLAGS      Flags to use linking an executable which will load shared objects
## LD_LIBRARY_PATH   Environment variable which specifies path to shared libraries
## STRIPLIBFLAGS     Arguments to strip a dynamic library

options {}

# Defaults: gcc on unix
define SHOBJ_CFLAGS -fPIC
define SHOBJ_LDFLAGS -shared
define SH_CFLAGS -fPIC
define SH_LDFLAGS -shared
define SH_LINKFLAGS -rdynamic
define SH_LINKRPATH "-Wl,-rpath -Wl,%s"
define SH_SOEXT .so
define SH_SOEXTVER .so.%s
define SH_SOPREFIX -Wl,-soname,
define LD_LIBRARY_PATH LD_LIBRARY_PATH
define STRIPLIBFLAGS --strip-unneeded

# Note: This is a helpful reference for identifying the toolchain
#       http://sourceforge.net/apps/mediawiki/predef/index.php?title=Compilers

switch -glob -- [get-define host] {
	*-*-darwin* {
		define SHOBJ_CFLAGS "-dynamic -fno-common"
		define SHOBJ_LDFLAGS "-bundle -undefined dynamic_lookup"
		define SHOBJ_LDFLAGS_R -bundle
		define SH_CFLAGS -dynamic
		define SH_LDFLAGS -dynamiclib
		define SH_LINKFLAGS ""
		define SH_SOEXT .dylib
		define SH_SOEXTVER .%s.dylib
		define SH_SOPREFIX -Wl,-install_name,
		define SH_SOFULLPATH
		define LD_LIBRARY_PATH DYLD_LIBRARY_PATH
		define STRIPLIBFLAGS -x
	}
	*-*-ming* - *-*-cygwin - *-*-msys {
		define SHOBJ_CFLAGS ""
		define SHOBJ_LDFLAGS -shared
		define SH_CFLAGS ""
		define SH_LDFLAGS -shared
		define SH_LINKRPATH ""
		define SH_LINKFLAGS ""
		define SH_SOEXT .dll
		define SH_SOEXTVER .dll
		define SH_SOPREFIX ""
		define LD_LIBRARY_PATH PATH
	}
	sparc* {
		if {[msg-quiet cc-check-decls __SUNPRO_C]} {
			msg-result "Found sun stdio compiler"
			# sun stdio compiler
			# XXX: These haven't been fully tested.
			define SHOBJ_CFLAGS -KPIC
			define SHOBJ_LDFLAGS "-G"
			define SH_CFLAGS -KPIC
			define SH_LINKFLAGS -Wl,-export-dynamic
			define SH_SOPREFIX -Wl,-h,
		}
	}
	*-*-solaris* {
		if {[msg-quiet cc-check-decls __SUNPRO_C]} {
			msg-result "Found sun stdio compiler"
			# sun stdio compiler
			# XXX: These haven't been fully tested.
			define SHOBJ_CFLAGS -KPIC
			define SHOBJ_LDFLAGS "-G"
			define SH_CFLAGS -KPIC
			define SH_LINKFLAGS -Wl,-export-dynamic
			define SH_SOPREFIX -Wl,-h,
		}
	}
	*-*-hpux {
		# XXX: These haven't been tested
		define SHOBJ_CFLAGS "+O3 +z"
		define SHOBJ_LDFLAGS -b
		define SH_CFLAGS +z
		define SH_LINKFLAGS -Wl,+s
		define LD_LIBRARY_PATH SHLIB_PATH
	}
	*-*-haiku {
		define SHOBJ_CFLAGS ""
		define SHOBJ_LDFLAGS -shared
		define SH_CFLAGS ""
		define SH_LDFLAGS -shared
		define SH_LINKFLAGS ""
		define SH_SOPREFIX ""
		define LD_LIBRARY_PATH LIBRARY_PATH
	}
}

if {![is-defined SHOBJ_LDFLAGS_R]} {
	define SHOBJ_LDFLAGS_R [get-define SHOBJ_LDFLAGS]
}
Added autosetup/cc.tcl.




















































































































































































































































































































































































































































































































































































































































































































































































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# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# The 'cc' module supports checking various 'features' of the C or C++
# compiler/linker environment. Common commands are 'cc-check-includes',
# 'cc-check-types', 'cc-check-functions', 'cc-with' and 'make-config-header'
#
# The following environment variables are used if set:
#
## CC       - C compiler
## CXX      - C++ compiler
## CPP      - C preprocessor
## CCACHE   - Set to "none" to disable automatic use of ccache
## CPPFLAGS  - Additional C preprocessor compiler flags (C and C++), before CFLAGS, CXXFLAGS
## CFLAGS   - Additional C compiler flags
## CXXFLAGS - Additional C++ compiler flags
## LDFLAGS  - Additional compiler flags during linking
## LINKFLAGS - ?How is this different from LDFLAGS?
## LIBS     - Additional libraries to use (for all tests)
## CROSS    - Tool prefix for cross compilation
#
# The following variables are defined from the corresponding
# environment variables if set.
#
## CC_FOR_BUILD
## LD

use system

options {}

# Checks for the existence of the given function by linking
#
proc cctest_function {function} {
	cctest -link 1 -declare "extern void $function\(void);" -code "$function\();"
}

# Checks for the existence of the given type by compiling
proc cctest_type {type} {
	cctest -code "$type _x;"
}

# Checks for the existence of the given type/structure member.
# e.g. "struct stat.st_mtime"
proc cctest_member {struct_member} {
	# split at the first dot
	regexp {^([^.]+)[.](.*)$} $struct_member -> struct member
	cctest -code "static $struct _s; return sizeof(_s.$member);"
}

# Checks for the existence of the given define by compiling
#
proc cctest_define {name} {
	cctest -code "#ifndef $name\n#error not defined\n#endif"
}

# Checks for the existence of the given name either as
# a macro (#define) or an rvalue (such as an enum)
#
proc cctest_decl {name} {
	cctest -code "#ifndef $name\n(void)$name;\n#endif"
}

# @cc-check-sizeof type ...
#
# Checks the size of the given types (between 1 and 32, inclusive).
# Defines a variable with the size determined, or 'unknown' otherwise.
# e.g. for type 'long long', defines 'SIZEOF_LONG_LONG'.
# Returns the size of the last type.
#
proc cc-check-sizeof {args} {
	foreach type $args {
		msg-checking "Checking for sizeof $type..."
		set size unknown
		# Try the most common sizes first
		foreach i {4 8 1 2 16 32} {
			if {[cctest -code "static int _x\[sizeof($type) == $i ? 1 : -1\] = { 1 };"]} {
				set size $i
				break
			}
		}
		msg-result $size
		set define [feature-define-name $type SIZEOF_]
		define $define $size
	}
	# Return the last result
	get-define $define
}

# Checks for each feature in $list by using the given script.
#
# When the script is evaluated, $each is set to the feature
# being checked, and $extra is set to any additional cctest args.
#
# Returns 1 if all features were found, or 0 otherwise.
proc cc-check-some-feature {list script} {
	set ret 1
	foreach each $list {
		if {![check-feature $each $script]} {
			set ret 0
		}
	}
	return $ret
}

# @cc-check-includes includes ...
#
# Checks that the given include files can be used.
proc cc-check-includes {args} {
	cc-check-some-feature $args {
		set with {}
		if {[dict exists $::autosetup(cc-include-deps) $each]} {
			set deps [dict keys [dict get $::autosetup(cc-include-deps) $each]]
			msg-quiet cc-check-includes {*}$deps
			foreach i $deps {
				if {[have-feature $i]} {
					lappend with $i
				}
			}
		}
		if {[llength $with]} {
			cc-with [list -includes $with] {
				cctest -includes $each
			}
		} else {
			cctest -includes $each
		}
	}
}

# @cc-include-needs include required ...
#
# Ensures that when checking for '$include', a check is first
# made for each '$required' file, and if found, it is included with '#include'.
proc cc-include-needs {file args} {
	foreach depfile $args {
		dict set ::autosetup(cc-include-deps) $file $depfile 1
	}
}

# @cc-check-types type ...
#
# Checks that the types exist.
proc cc-check-types {args} {
	cc-check-some-feature $args {
		cctest_type $each
	}
}

# @cc-check-defines define ...
#
# Checks that the given preprocessor symbols are defined.
proc cc-check-defines {args} {
	cc-check-some-feature $args {
		cctest_define $each
	}
}

# @cc-check-decls name ...
#
# Checks that each given name is either a preprocessor symbol or rvalue
# such as an enum. Note that the define used is 'HAVE_DECL_xxx'
# rather than 'HAVE_xxx'.
proc cc-check-decls {args} {
	set ret 1
	foreach name $args {
		msg-checking "Checking for $name..."
		set r [cctest_decl $name]
		define-feature "decl $name" $r
		if {$r} {
			msg-result "ok"
		} else {
			msg-result "not found"
			set ret 0
		}
	}
	return $ret
}

# @cc-check-functions function ...
#
# Checks that the given functions exist (can be linked).
proc cc-check-functions {args} {
	cc-check-some-feature $args {
		cctest_function $each
	}
}

# @cc-check-members type.member ...
#
# Checks that the given type/structure members exist.
# A structure member is of the form 'struct stat.st_mtime'.
proc cc-check-members {args} {
	cc-check-some-feature $args {
		cctest_member $each
	}
}

# @cc-check-function-in-lib function libs ?otherlibs?
#
# Checks that the given function can be found in one of the libs.
#
# First checks for no library required, then checks each of the libraries
# in turn.
#
# If the function is found, the feature is defined and 'lib_$function' is defined
# to '-l$lib' where the function was found, or "" if no library required.
# In addition, '-l$lib' is prepended to the 'LIBS' define.
#
# If additional libraries may be needed for linking, they should be specified
# with '$extralibs' as '-lotherlib1 -lotherlib2'.
# These libraries are not automatically added to 'LIBS'.
#
# Returns 1 if found or 0 if not.
#
proc cc-check-function-in-lib {function libs {otherlibs {}}} {
	msg-checking "Checking libs for $function..."
	set found 0
	cc-with [list -libs $otherlibs] {
		if {[cctest_function $function]} {
			msg-result "none needed"
			define lib_$function ""
			incr found
		} else {
			foreach lib $libs {
				cc-with [list -libs -l$lib] {
					if {[cctest_function $function]} {
						msg-result -l$lib
						define lib_$function -l$lib
						# prepend to LIBS
						define LIBS "-l$lib [get-define LIBS]"
						incr found
						break
					}
				}
			}
		}
	}
	define-feature $function $found
	if {!$found} {
		msg-result "no"
	}
	return $found
}

# @cc-check-tools tool ...
#
# Checks for existence of the given compiler tools, taking
# into account any cross compilation prefix.
#
# For example, when checking for 'ar', first 'AR' is checked on the command
# line and then in the environment. If not found, '${host}-ar' or
# simply 'ar' is assumed depending upon whether cross compiling.
# The path is searched for this executable, and if found 'AR' is defined
# to the executable name.
# Note that even when cross compiling, the simple 'ar' is used as a fallback,
# but a warning is generated. This is necessary for some toolchains.
#
# It is an error if the executable is not found.
#
proc cc-check-tools {args} {
	foreach tool $args {
		set TOOL [string toupper $tool]
		set exe [get-env $TOOL [get-define cross]$tool]
		if {[find-executable $exe]} {
			define $TOOL $exe
			continue
		}
		if {[find-executable $tool]} {
			msg-result "Warning: Failed to find $exe, falling back to $tool which may be incorrect"
			define $TOOL $tool
			continue
		}
		user-error "Failed to find $exe"
	}
}

# @cc-check-progs prog ...
#
# Checks for existence of the given executables on the path.
#
# For example, when checking for 'grep', the path is searched for
# the executable, 'grep', and if found 'GREP' is defined as 'grep'.
#
# If the executable is not found, the variable is defined as 'false'.
# Returns 1 if all programs were found, or 0 otherwise.
#
proc cc-check-progs {args} {
	set failed 0
	foreach prog $args {
		set PROG [string toupper $prog]
		msg-checking "Checking for $prog..."
		if {![find-executable $prog]} {
			msg-result no
			define $PROG false
			incr failed
		} else {
			msg-result ok
			define $PROG $prog
		}
	}
	expr {!$failed}
}

# @cc-path-progs prog ...
#
# Like cc-check-progs, but sets the define to the full path rather
# than just the program name.
#
proc cc-path-progs {args} {
	set failed 0
	foreach prog $args {
		set PROG [string toupper $prog]
		msg-checking "Checking for $prog..."
		set path [find-executable-path $prog]
		if {$path eq ""} {
			msg-result no
			define $PROG false
			incr failed
		} else {
			msg-result $path
			define $PROG $path
		}
	}
	expr {!$failed}
}

# Adds the given settings to $::autosetup(ccsettings) and
# returns the old settings.
#
proc cc-add-settings {settings} {
	if {[llength $settings] % 2} {
		autosetup-error "settings list is missing a value: $settings"
	}

	set prev [cc-get-settings]
	# workaround a bug in some versions of jimsh by forcing
	# conversion of $prev to a list
	llength $prev

	array set new $prev

	foreach {name value} $settings {
		switch -exact -- $name {
			-cflags - -includes {
				# These are given as lists
				lappend new($name) {*}[list-non-empty $value]
			}
			-declare {
				lappend new($name) $value
			}
			-libs {
				# Note that new libraries are added before previous libraries
				set new($name) [list {*}[list-non-empty $value] {*}$new($name)]
			}
			-link - -lang - -nooutput {
				set new($name) $value
			}
			-source - -sourcefile - -code {
				# XXX: These probably are only valid directly from cctest
				set new($name) $value
			}
			default {
				autosetup-error "unknown cctest setting: $name"
			}
		}
	}

	cc-store-settings [array get new]

	return $prev
}

proc cc-store-settings {new} {
	set ::autosetup(ccsettings) $new
}

proc cc-get-settings {} {
	return $::autosetup(ccsettings)
}

# Similar to cc-add-settings, but each given setting
# simply replaces the existing value.
#
# Returns the previous settings
proc cc-update-settings {args} {
	set prev [cc-get-settings]
	cc-store-settings [dict merge $prev $args]
	return $prev
}

# @cc-with settings ?{ script }?
#
# Sets the given 'cctest' settings and then runs the tests in '$script'.
# Note that settings such as '-lang' replace the current setting, while
# those such as '-includes' are appended to the existing setting.
#
# If no script is given, the settings become the default for the remainder
# of the 'auto.def' file.
#
## cc-with {-lang c++} {
##   # This will check with the C++ compiler
##   cc-check-types bool
##   cc-with {-includes signal.h} {
##     # This will check with the C++ compiler, signal.h and any existing includes.
##     ...
##   }
##   # back to just the C++ compiler
## }
#
# The '-libs' setting is special in that newer values are added *before* earlier ones.
#
## cc-with {-libs {-lc -lm}} {
##   cc-with {-libs -ldl} {
##     cctest -libs -lsocket ...
##     # libs will be in this order: -lsocket -ldl -lc -lm
##   }
## }
#
# If you wish to invoke something like cc-check-flags but not have -cflags updated,
# use the following idiom:
#
## cc-with {} {
##   cc-check-flags ...
## }
proc cc-with {settings args} {
	if {[llength $args] == 0} {
		cc-add-settings $settings
	} elseif {[llength $args] > 1} {
		autosetup-error "usage: cc-with settings ?script?"
	} else {
		set save [cc-add-settings $settings]
		set rc [catch {uplevel 1 [lindex $args 0]} result info]
		cc-store-settings $save
		if {$rc != 0} {
			return -code [dict get $info -code] $result
		}
		return $result
	}
}

# @cctest ?settings?
#
# Low level C/C++ compiler checker. Compiles and or links a small C program
# according to the arguments and returns 1 if OK, or 0 if not.
#
# Supported settings are:
#
## -cflags cflags      A list of flags to pass to the compiler
## -includes list      A list of includes, e.g. {stdlib.h stdio.h}
## -declare code       Code to declare before main()
## -link 1             Don't just compile, link too
## -lang c|c++         Use the C (default) or C++ compiler
## -libs liblist       List of libraries to link, e.g. {-ldl -lm}
## -code code          Code to compile in the body of main()
## -source code        Compile a complete program. Ignore -includes, -declare and -code
## -sourcefile file    Shorthand for -source [readfile [get-define srcdir]/$file]
## -nooutput 1         Treat any compiler output (e.g. a warning) as an error
#
# Unless '-source' or '-sourcefile' is specified, the C program looks like:
#
## #include <firstinclude>   /* same for remaining includes in the list */
## declare-code              /* any code in -declare, verbatim */
## int main(void) {
##   code                    /* any code in -code, verbatim */
##   return 0;
## }
#
# And the command line looks like:
#
## CC -cflags CFLAGS CPPFLAGS conftest.c -o conftest.o
## CXX -cflags CXXFLAGS CPPFLAGS conftest.cpp -o conftest.o
#
# And if linking:
#
## CC LDFLAGS -cflags CFLAGS conftest.c -o conftest -libs LIBS
## CXX LDFLAGS -cflags CXXFLAGS conftest.c -o conftest -libs LIBS
#
# Any failures are recorded in 'config.log'
#
proc cctest {args} {
	set tmp conftest__

	# Easiest way to merge in the settings
	cc-with $args {
		array set opts [cc-get-settings]
	}

	if {[info exists opts(-sourcefile)]} {
		set opts(-source) [readfile [get-define srcdir]/$opts(-sourcefile) "#error can't find $opts(-sourcefile)"]
	}
	if {[info exists opts(-source)]} {
		set lines $opts(-source)
	} else {
		foreach i $opts(-includes) {
			if {$opts(-code) ne "" && ![feature-checked $i]} {
				# Compiling real code with an unchecked header file
				# Quickly (and silently) check for it now

				# Remove all -includes from settings before checking
				set saveopts [cc-update-settings -includes {}]
				msg-quiet cc-check-includes $i
				cc-store-settings $saveopts
			}
			if {$opts(-code) eq "" || [have-feature $i]} {
				lappend source "#include <$i>"
			}
		}
		lappend source {*}$opts(-declare)
		lappend source "int main(void) {"
		lappend source $opts(-code)
		lappend source "return 0;"
		lappend source "}"

		set lines [join $source \n]
	}

	# Build the command line
	set cmdline {}
	lappend cmdline {*}[get-define CCACHE]
	switch -exact -- $opts(-lang) {
		c++ {
			set src conftest__.cpp
			lappend cmdline {*}[get-define CXX]
			set cflags [get-define CXXFLAGS]
		}
		c {
			set src conftest__.c
			lappend cmdline {*}[get-define CC]
			set cflags [get-define CFLAGS]
		}
		default {
			autosetup-error "cctest called with unknown language: $opts(-lang)"
		}
	}

	if {$opts(-link)} {
		lappend cmdline {*}[get-define LDFLAGS]
	} else {
		lappend cflags {*}[get-define CPPFLAGS]
		set tmp conftest__.o
		lappend cmdline -c
	}
	lappend cmdline {*}$opts(-cflags) {*}[get-define cc-default-debug ""] {*}$cflags
	lappend cmdline $src -o $tmp
	if {$opts(-link)} {
		lappend cmdline {*}$opts(-libs) {*}[get-define LIBS]
	}

	# At this point we have the complete command line and the
	# complete source to be compiled. Get the result from cache if
	# we can
	if {[info exists ::cc_cache($cmdline,$lines)]} {
		msg-checking "(cached) "
		set ok $::cc_cache($cmdline,$lines)
		if {$::autosetup(debug)} {
			configlog "From cache (ok=$ok): [join $cmdline]"
			configlog "============"
			configlog $lines
			configlog "============"
		}
		return $ok
	}

	writefile $src $lines\n

	set ok 1
	set err [catch {exec-with-stderr {*}$cmdline} result errinfo]
	if {$err || ($opts(-nooutput) && [string length $result])} {
		configlog "Failed: [join $cmdline]"
		configlog $result
		configlog "============"
		configlog "The failed code was:"
		configlog $lines
		configlog "============"
		set ok 0
	} elseif {$::autosetup(debug)} {
		configlog "Compiled OK: [join $cmdline]"
		configlog "============"
		configlog $lines
		configlog "============"
	}
	file delete $src
	file delete $tmp

	# cache it
	set ::cc_cache($cmdline,$lines) $ok

	return $ok
}

# @make-autoconf-h outfile ?auto-patterns=HAVE_*? ?bare-patterns=SIZEOF_*?
#
# Deprecated - see 'make-config-header'
proc make-autoconf-h {file {autopatterns {HAVE_*}} {barepatterns {SIZEOF_* HAVE_DECL_*}}} {
	user-notice "*** make-autoconf-h is deprecated -- use make-config-header instead"
	make-config-header $file -auto $autopatterns -bare $barepatterns
}

# @make-config-header outfile ?-auto patternlist? ?-bare patternlist? ?-none patternlist? ?-str patternlist? ...
#
# Examines all defined variables which match the given patterns
# and writes an include file, '$file', which defines each of these.
# Variables which match '-auto' are output as follows:
# - defines which have the value '0' are ignored.
# - defines which have integer values are defined as the integer value.
# - any other value is defined as a string, e.g. '"value"'
# Variables which match '-bare' are defined as-is.
# Variables which match '-str' are defined as a string, e.g. '"value"'
# Variables which match '-none' are omitted.
#
# Note that order is important. The first pattern that matches is selected.
# Default behaviour is:
#
##  -bare {SIZEOF_* HAVE_DECL_*} -auto HAVE_* -none *
#
# If the file would be unchanged, it is not written.
proc make-config-header {file args} {
	set guard _[string toupper [regsub -all {[^a-zA-Z0-9]} [file tail $file] _]]
	file mkdir [file dirname $file]
	set lines {}
	lappend lines "#ifndef $guard"
	lappend lines "#define $guard"

	# Add some defaults
	lappend args -bare {SIZEOF_* HAVE_DECL_*} -auto HAVE_*

	foreach n [lsort [dict keys [all-defines]]] {
		set value [get-define $n]
		set type [calc-define-output-type $n $args]
		switch -exact -- $type {
			-bare {
				# Just output the value unchanged
			}
			-none {
				continue
			}
			-str {
				set value \"[string map [list \\ \\\\ \" \\\"] $value]\"
			}
			-auto {
				# Automatically determine the type
				if {$value eq "0"} {
					lappend lines "/* #undef $n */"
					continue
				}
				if {![string is integer -strict $value]} {
					set value \"[string map [list \\ \\\\ \" \\\"] $value]\"
				}
			}
			"" {
				continue
			}
			default {
				autosetup-error "Unknown type in make-config-header: $type"
			}
		}
		lappend lines "#define $n $value"
	}
	lappend lines "#endif"
	set buf [join $lines \n]
	write-if-changed $file $buf {
		msg-result "Created $file"
	}
}

proc calc-define-output-type {name spec} {
	foreach {type patterns} $spec {
		foreach pattern $patterns {
			if {[string match $pattern $name]} {
				return $type
			}
		}
	}
	return ""
}

# Initialise some values from the environment or commandline or default settings
foreach i {LDFLAGS LIBS CPPFLAGS LINKFLAGS CFLAGS} {
	lassign $i var default
	define $var [get-env $var $default]
}

if {[env-is-set CC]} {
	# Set by the user, so don't try anything else
	set try [list [get-env CC ""]]
} else {
	# Try some reasonable options
	set try [list [get-define cross]cc [get-define cross]gcc]
}
define CC [find-an-executable {*}$try]
if {[get-define CC] eq ""} {
	user-error "Could not find a C compiler. Tried: [join $try ", "]"
}

define CPP [get-env CPP "[get-define CC] -E"]

# XXX: Could avoid looking for a C++ compiler until requested
# If CXX isn't found, it is set to the empty string.
if {[env-is-set CXX]} {
	define CXX [find-an-executable -required [get-env CXX ""]]
} else {
	define CXX [find-an-executable [get-define cross]c++ [get-define cross]g++]
}

# CXXFLAGS default to CFLAGS if not specified
define CXXFLAGS [get-env CXXFLAGS [get-define CFLAGS]]

# May need a CC_FOR_BUILD, so look for one
define CC_FOR_BUILD [find-an-executable [get-env CC_FOR_BUILD ""] cc gcc false]

if {[get-define CC] eq ""} {
	user-error "Could not find a C compiler. Tried: [join $try ", "]"
}

# These start empty and never come from the user or environment
define AS_CFLAGS ""
define AS_CPPFLAGS ""
define AS_CXXFLAGS ""

define CCACHE [find-an-executable [get-env CCACHE ccache]]

# If any of these are set in the environment, propagate them to the AUTOREMAKE commandline
foreach i {CC CXX CCACHE CPP CFLAGS CXXFLAGS CXXFLAGS LDFLAGS LIBS CROSS CPPFLAGS LINKFLAGS CC_FOR_BUILD LD} {
	if {[env-is-set $i]} {
		# Note: If the variable is set on the command line, get-env will return that value
		# so the command line will continue to override the environment
		define-append-argv AUTOREMAKE $i=[get-env $i ""]
	}
}

# Initial cctest settings
cc-store-settings {-cflags {} -includes {} -declare {} -link 0 -lang c -libs {} -code {} -nooutput 0}
set autosetup(cc-include-deps) {}

msg-result "C compiler...[get-define CCACHE] [get-define CC] [get-define CFLAGS] [get-define CPPFLAGS]"
if {[get-define CXX] ne "false"} {
	msg-result "C++ compiler...[get-define CCACHE] [get-define CXX] [get-define CXXFLAGS] [get-define CPPFLAGS]"
}
msg-result "Build C compiler...[get-define CC_FOR_BUILD]"

# On Darwin, we prefer to use -g0 to avoid creating .dSYM directories
# but some compilers may not support it, so test here.
switch -glob -- [get-define host] {
	*-*-darwin* {
		if {[cctest -cflags {-g0}]} {
			define cc-default-debug -g0
		}
	}
}

if {![cc-check-includes stdlib.h]} {
	user-error "Compiler does not work. See config.log"
}
Added autosetup/default.auto.

























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# Copyright (c) 2012 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Auto-load module for 'make' build system integration

use init

autosetup_add_init_type make {Simple "make" build system} {
	autosetup_check_create auto.def \
{# Initial auto.def created by 'autosetup --init=make'

use cc

# Add any user options here
options {
}

make-config-header config.h
make-template Makefile.in
}

	if {![file exists Makefile.in]} {
		puts "Note: I don't see Makefile.in. You will probably need to create one."
	}
}
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# For this project, disable the pager for --help and --ref
# The user can still enable by using --nopager=0 or --disable-nopager
dict set autosetup(optdefault) nopager 1

# Searches for a usable Tcl (prefer 8.6, 8.5, 8.4) in the given paths
# Returns a dictionary of the contents of the tclConfig.sh file, or
# empty if not found
proc parse-tclconfig-sh {args} {
	foreach p $args {
		# Allow pointing directly to the path containing tclConfig.sh
		if {[file exists $p/tclConfig.sh]} {
			return [parse-tclconfig-sh-file $p/tclConfig.sh]
		}
		# Some systems allow for multiple versions
		foreach libpath {lib/tcl8.6 lib/tcl8.5 lib/tcl8.4 lib/tcl tcl lib}  {
			if {[file exists $p/$libpath/tclConfig.sh]} {
				return [parse-tclconfig-sh-file $p/$libpath/tclConfig.sh]
			}
		}
	}
}

proc parse-tclconfig-sh-file {filename} {
	foreach line [split [readfile $filename] \n] {
		if {[regexp {^(TCL_[^=]*)=(.*)$} $line -> name value]} {
			set value [regsub -all {\$\{.*\}} $value ""]
			set tclconfig($name) [string trim $value ']
		}
	}
	return [array get tclconfig]
}
Added autosetup/pkg-config.tcl.








































































































































































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# Copyright (c) 2016 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# The 'pkg-config' module allows package information to be found via 'pkg-config'.
#
# If not cross-compiling, the package path should be determined automatically
# by 'pkg-config'.
# If cross-compiling, the default package path is the compiler sysroot.
# If the C compiler doesn't support '-print-sysroot', the path can be supplied
# by the '--sysroot' option or by defining 'SYSROOT'.
#
# 'PKG_CONFIG' may be set to use an alternative to 'pkg-config'.

use cc

options {
	sysroot:dir => "Override compiler sysroot for pkg-config search path"
}

# @pkg-config-init ?required?
#
# Initialises the 'pkg-config' system. Unless '$required' is set to 0,
# it is a fatal error if a usable 'pkg-config' is not found .
#
# This command will normally be called automatically as required,
# but it may be invoked explicitly if lack of 'pkg-config' is acceptable.
#
# Returns 1 if ok, or 0 if 'pkg-config' not found/usable (only if '$required' is 0).
#
proc pkg-config-init {{required 1}} {
	if {[is-defined HAVE_PKG_CONFIG]} {
		return [get-define HAVE_PKG_CONFIG]
	}
	set found 0

	define PKG_CONFIG [get-env PKG_CONFIG pkg-config]
	msg-checking "Checking for pkg-config..."

	if {[catch {exec [get-define PKG_CONFIG] --version} version]} {
		msg-result "[get-define PKG_CONFIG] (not found)"
		if {$required} {
			user-error "No usable pkg-config"
		}
	} else {
		msg-result $version
		define PKG_CONFIG_VERSION $version

		set found 1

		if {[opt-str sysroot o]} {
			define SYSROOT [file-normalize $o]
			msg-result "Using specified sysroot [get-define SYSROOT]"
		} elseif {[get-define build] ne [get-define host]} {
			if {[catch {exec-with-stderr {*}[get-define CC] -print-sysroot} result errinfo] == 0} {
				# Use the compiler sysroot, if there is one
				define SYSROOT $result
				msg-result "Found compiler sysroot $result"
			} else {
				configlog "[get-define CC] -print-sysroot: $result"
				set msg "pkg-config: Cross compiling, but no compiler sysroot and no --sysroot supplied"
				if {$required} {
					user-error $msg
				} else {
					msg-result $msg
				}
				set found 0
			}
		}
		if {[is-defined SYSROOT]} {
			set sysroot [get-define SYSROOT]

			# XXX: It's possible that these should be set only when invoking pkg-config
			global env
			set env(PKG_CONFIG_DIR) ""
			# Supposedly setting PKG_CONFIG_LIBDIR means that PKG_CONFIG_PATH is ignored,
			# but it doesn't seem to work that way in practice
			set env(PKG_CONFIG_PATH) ""
			# Do we need to try /usr/local as well or instead?
			set env(PKG_CONFIG_LIBDIR) $sysroot/usr/lib/pkgconfig:$sysroot/usr/share/pkgconfig
			set env(PKG_CONFIG_SYSROOT_DIR) $sysroot
		}
	}
	define HAVE_PKG_CONFIG $found
	return $found
}

# @pkg-config module ?requirements?
#
# Use 'pkg-config' to find the given module meeting the given requirements.
# e.g.
#
## pkg-config pango >= 1.37.0
#
# If found, returns 1 and sets 'HAVE_PKG_PANGO' to 1 along with:
#
## PKG_PANGO_VERSION to the found version
## PKG_PANGO_LIBS    to the required libs (--libs-only-l)
## PKG_PANGO_LDFLAGS to the required linker flags (--libs-only-L)
## PKG_PANGO_CFLAGS  to the required compiler flags (--cflags)
#
# If not found, returns 0.
#
proc pkg-config {module args} {
	set ok [pkg-config-init]

	msg-checking "Checking for $module $args..."

	if {!$ok} {
		msg-result "no pkg-config"
		return 0
	}

	set pkgconfig [get-define PKG_CONFIG]

	set ret [catch {exec $pkgconfig --modversion "$module $args"} version]
	configlog "$pkgconfig --modversion $module $args: $version"
	if {$ret} {
		msg-result "not found"
		return 0
	}
	# Sometimes --modversion succeeds but because of dependencies it isn't usable
	# This seems to show up with --cflags
	set ret [catch {exec $pkgconfig --cflags $module} cflags]
	if {$ret} {
		msg-result "unusable ($version - see config.log)"
		configlog "$pkgconfig --cflags $module"
		configlog $cflags
		return 0
	}
	msg-result $version
	set prefix [feature-define-name $module PKG_]
	define HAVE_${prefix}
	define ${prefix}_VERSION $version
	define ${prefix}_CFLAGS $cflags
	define ${prefix}_LIBS [exec $pkgconfig --libs-only-l $module]
	define ${prefix}_LDFLAGS [exec $pkgconfig --libs-only-L $module]
	return 1
}

# @pkg-config-get module setting
#
# Convenience access to the results of 'pkg-config'.
#
# For example, '[pkg-config-get pango CFLAGS]' returns
# the value of 'PKG_PANGO_CFLAGS', or '""' if not defined.
proc pkg-config-get {module name} {
	set prefix [feature-define-name $module PKG_]
	get-define ${prefix}_${name} ""
}

# @pkg-config-get-var module variable
#
# Return the value of the given variable from the given pkg-config module.
# The module must already have been successfully detected with pkg-config.
# e.g.
#
## if {[pkg-config harfbuzz >= 2.5]} {
##   define harfbuzz_libdir [pkg-config-get-var harfbuzz libdir]
## }
#
# Returns the empty string if the variable isn't defined.
proc pkg-config-get-var {module variable} {
	set pkgconfig [get-define PKG_CONFIG]
	set prefix [feature-define-name $module HAVE_PKG_]
	exec $pkgconfig $module --variable $variable
}
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# Copyright (c) 2010 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# This module supports common system interrogation and options
# such as '--host', '--build', '--prefix', and setting 'srcdir', 'builddir', and 'EXEEXT'.
#
# It also support the "feature" naming convention, where searching
# for a feature such as 'sys/type.h' defines 'HAVE_SYS_TYPES_H'.
#
# It defines the following variables, based on '--prefix' unless overridden by the user:
#
## datadir
## sysconfdir
## sharedstatedir
## localstatedir
## infodir
## mandir
## includedir
#
# If '--prefix' is not supplied, it defaults to '/usr/local' unless 'options-defaults { prefix ... }' is used *before*
# including the 'system' module.

if {[is-defined defaultprefix]} {
	user-notice "Note: defaultprefix is deprecated. Use options-defaults to set default options"
	options-defaults [list prefix [get-define defaultprefix]]
}

options {
	host:host-alias =>		{a complete or partial cpu-vendor-opsys for the system where
							the application will run (defaults to the same value as --build)}
	build:build-alias =>	{a complete or partial cpu-vendor-opsys for the system
							where the application will be built (defaults to the
							result of running config.guess)}
	prefix:dir=/usr/local => {the target directory for the build (default: '@default@')}

	# These (hidden) options are supported for autoconf/automake compatibility
	exec-prefix:
	bindir:
	sbindir:
	includedir:
	mandir:
	infodir:
	libexecdir:
	datadir:
	libdir:
	sysconfdir:
	sharedstatedir:
	localstatedir:
	runstatedir:
	maintainer-mode=0
	dependency-tracking=0
	silent-rules=0
	program-prefix:
	program-suffix:
	program-transform-name:
}

# @check-feature name { script }
#
# defines feature '$name' to the return value of '$script',
# which should be 1 if found or 0 if not found.
#
# e.g. the following will define 'HAVE_CONST' to 0 or 1.
#
## check-feature const {
##     cctest -code {const int _x = 0;}
## }
proc check-feature {name code} {
	msg-checking "Checking for $name..."
	set r [uplevel 1 $code]
	define-feature $name $r
	if {$r} {
		msg-result "ok"
	} else {
		msg-result "not found"
	}
	return $r
}

# @have-feature name ?default=0?
#
# Returns the value of feature '$name' if defined, or '$default' if not.
#
# See 'feature-define-name' for how the "feature" name
# is translated into the "define" name.
#
proc have-feature {name {default 0}} {
	get-define [feature-define-name $name] $default
}

# @define-feature name ?value=1?
#
# Sets the feature 'define' to '$value'.
#
# See 'feature-define-name' for how the "feature" name
# is translated into the "define" name.
#
proc define-feature {name {value 1}} {
	define [feature-define-name $name] $value
}

# @feature-checked name
#
# Returns 1 if feature '$name' has been checked, whether true or not.
#
proc feature-checked {name} {
	is-defined [feature-define-name $name]
}

# @feature-define-name name ?prefix=HAVE_?
#
# Converts a "feature" name to the corresponding "define",
# e.g. 'sys/stat.h' becomes 'HAVE_SYS_STAT_H'.
#
# Converts '*' to 'P' and all non-alphanumeric to underscore.
#
proc feature-define-name {name {prefix HAVE_}} {
	string toupper $prefix[regsub -all {[^a-zA-Z0-9]} [regsub -all {[*]} $name p] _]
}

# @write-if-changed filename contents ?script?
#
# If '$filename' doesn't exist, or it's contents are different to '$contents',
# the file is written and '$script' is evaluated.
#
# Otherwise a "file is unchanged" message is displayed.
proc write-if-changed {file buf {script {}}} {
	set old [readfile $file ""]
	if {$old eq $buf && [file exists $file]} {
		msg-result "$file is unchanged"
	} else {
		writefile $file $buf\n
		uplevel 1 $script
	}
}


# @include-file infile mapping
#
# The core of make-template, called recursively for each @include
# directive found within that template so that this proc's result
# is the fully-expanded template.
#
# The mapping parameter is how we expand @varname@ within the template.
# We do that inline within this step only for @include directives which
# can have variables in the filename arg.  A separate substitution pass
# happens when this recursive function returns, expanding the rest of
# the variables.
#
proc include-file {infile mapping} {
	# A stack of true/false conditions, one for each nested conditional
	# starting with "true"
	set condstack {1}
	set result {}
	set linenum 0
	foreach line [split [readfile $infile] \n] {
		incr linenum
		if {[regexp {^@(if|else|endif)(\s*)(.*)} $line -> condtype condspace condargs]} {
			if {$condtype eq "if"} {
				if {[string length $condspace] == 0} {
					autosetup-error "$infile:$linenum: Invalid expression: $line"
				}
				if {[llength $condargs] == 1} {
					# ABC => [get-define ABC] ni {0 ""}
					# !ABC => [get-define ABC] in {0 ""}
					lassign $condargs condvar
					if {[regexp {^!(.*)} $condvar -> condvar]} {
						set op in
					} else {
						set op ni
					}
					set condexpr "\[[list get-define $condvar]\] $op {0 {}}"
				} else {
					# Translate alphanumeric ABC into [get-define ABC] and leave the
					# rest of the expression untouched
					regsub -all {([A-Z][[:alnum:]_]*)} $condargs {[get-define \1]} condexpr
				}
				if {[catch [list expr $condexpr] condval]} {
					dputs $condval
					autosetup-error "$infile:$linenum: Invalid expression: $line"
				}
				dputs "@$condtype: $condexpr => $condval"
			}
			if {$condtype ne "if"} {
				if {[llength $condstack] <= 1} {
					autosetup-error "$infile:$linenum: Error: @$condtype missing @if"
				} elseif {[string length $condargs] && [string index $condargs 0] ne "#"} {
					autosetup-error "$infile:$linenum: Error: Extra arguments after @$condtype"
				}
			}
			switch -exact $condtype {
				if {
					# push condval
					lappend condstack $condval
				}
				else {
					# Toggle the last entry
					set condval [lpop condstack]
					set condval [expr {!$condval}]
					lappend condstack $condval
				}
				endif {
					if {[llength $condstack] == 0} {
						user-notice "$infile:$linenum: Error: @endif missing @if"
					}
					lpop condstack
				}
			}
			continue
		}
		# Only continue if the stack contains all "true"
		if {"0" in $condstack} {
			continue
		}
		if {[regexp {^@include\s+(.*)} $line -> filearg]} {
			set incfile [string map $mapping $filearg]
			if {[file exists $incfile]} {
				lappend ::autosetup(deps) [file-normalize $incfile]
				lappend result {*}[include-file $incfile $mapping]
			} else {
				user-error "$infile:$linenum: Include file $incfile is missing"
			}
			continue
		}
		if {[regexp {^@define\s+(\w+)\s+(.*)} $line -> var val]} {
			define $var $val
			continue
		}
		lappend result $line
	}
	return $result
}


# @make-template template ?outfile?
#
# Reads the input file '<srcdir>/$template' and writes the output file '$outfile'
# (unless unchanged).
# If '$outfile' is blank/omitted, '$template' should end with '.in' which
# is removed to create the output file name.
#
# Each pattern of the form '@define@' is replaced with the corresponding
# "define", if it exists, or left unchanged if not.
#
# The special value '@srcdir@' is substituted with the relative
# path to the source directory from the directory where the output
# file is created, while the special value '@top_srcdir@' is substituted
# with the relative path to the top level source directory.
#
# Conditional sections may be specified as follows:
## @if NAME eq "value"
## lines
## @else
## lines
## @endif
#
# Where 'NAME' is a defined variable name and '@else' is optional.
# Note that variables names *must* start with an uppercase letter.
# If the expression does not match, all lines through '@endif' are ignored.
#
# The alternative forms may also be used:
## @if NAME  (true if the variable is defined, but not empty and not "0")
## @if !NAME  (opposite of the form above)
## @if <general-tcl-expression>
#
# In the general Tcl expression, any words beginning with an uppercase letter
# are translated into [get-define NAME]
#
# Expressions may be nested
#
proc make-template {template {out {}}} {
	set infile [file join $::autosetup(srcdir) $template]

	if {![file exists $infile]} {
		user-error "Template $template is missing"
	}

	# Define this as late as possible
	define AUTODEPS $::autosetup(deps)

	if {$out eq ""} {
		if {[file ext $template] ne ".in"} {
			autosetup-error "make_template $template has no target file and can't guess"
		}
		set out [file rootname $template]
	}

	set outdir [file dirname $out]

	# Make sure the directory exists
	file mkdir $outdir

	# Set up srcdir and top_srcdir to be relative to the target dir
	define srcdir [relative-path [file join $::autosetup(srcdir) $outdir] $outdir]
	define top_srcdir [relative-path $::autosetup(srcdir) $outdir]

	# Build map from global defines to their values so they can be
	# substituted into @include file names.
	proc build-define-mapping {} {
		set mapping {}
		foreach {n v} [array get ::define] {
			lappend mapping @$n@ $v
		}
		return $mapping
	}
	set mapping [build-define-mapping]

	set result [include-file $infile $mapping]

	# Rebuild the define mapping in case we ran across @define
	# directives in the template or a file it @included, then
	# apply that mapping to the expanded template.
	set mapping [build-define-mapping]
	write-if-changed $out [string map $mapping [join $result \n]] {
		msg-result "Created [relative-path $out] from [relative-path $template]"
	}
}

# build/host tuples and cross-compilation prefix
opt-str build build ""
define build_alias $build
if {$build eq ""} {
	define build [config_guess]
} else {
	define build [config_sub $build]
}

opt-str host host ""
define host_alias $host
if {$host eq ""} {
	define host [get-define build]
	set cross ""
} else {
	define host [config_sub $host]
	set cross $host-
}
define cross [get-env CROSS $cross]

# build/host _cpu, _vendor and _os
foreach type {build host} {
	set v [get-define $type]
	if {![regexp {^([^-]+)-([^-]+)-(.*)$} $v -> cpu vendor os]} {
		user-error "Invalid canonical $type: $v"
	}
	define ${type}_cpu $cpu
	define ${type}_vendor $vendor
	define ${type}_os $os
}

opt-str prefix prefix /usr/local

# These are for compatibility with autoconf
define target [get-define host]
define prefix $prefix
define builddir $autosetup(builddir)
define srcdir $autosetup(srcdir)
define top_srcdir $autosetup(srcdir)
define abs_top_srcdir [file-normalize $autosetup(srcdir)]
define abs_top_builddir [file-normalize $autosetup(builddir)]

# autoconf supports all of these
define exec_prefix [opt-str exec-prefix exec_prefix $prefix]
foreach {name defpath} {
	bindir /bin
	sbindir /sbin
	libexecdir /libexec
	libdir /lib
} {
	define $name [opt-str $name o $exec_prefix$defpath]
}
foreach {name defpath} {
	datadir /share
	sharedstatedir /com
	infodir /share/info
	mandir /share/man
	includedir /include
} {
	define $name [opt-str $name o $prefix$defpath]
}
if {$prefix ne {/usr}} {
	opt-str sysconfdir sysconfdir $prefix/etc
} else {
	opt-str sysconfdir sysconfdir /etc
}
define sysconfdir $sysconfdir

define localstatedir [opt-str localstatedir o /var]
define runstatedir [opt-str runstatedir o /run]

define SHELL [get-env SHELL [find-an-executable sh bash ksh]]

# These could be used to generate Makefiles following some automake conventions
define AM_SILENT_RULES [opt-bool silent-rules]
define AM_MAINTAINER_MODE [opt-bool maintainer-mode]
define AM_DEPENDENCY_TRACKING [opt-bool dependency-tracking]

# Windows vs. non-Windows
switch -glob -- [get-define host] {
	*-*-ming* - *-*-cygwin - *-*-msys {
		define-feature windows
		define EXEEXT .exe
	}
	default {
		define EXEEXT ""
	}
}

# Display
msg-result "Host System...[get-define host]"
msg-result "Build System...[get-define build]"
Added autosetup/tmake.auto.









































































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# Copyright (c) 2016 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# Auto-load module for 'tmake' build system integration

use init

autosetup_add_init_type tmake "Tcl-based tmake build system" {
	autosetup_check_create auto.def \
{# Initial auto.def created by 'autosetup --init=tmake'
# vim:set syntax=tcl:

use cc cc-lib cc-db cc-shared
use tmake

# Add any user options here
# Really want a --configure that takes over the rest of the command line
options {
}

cc-check-tools ar ranlib

set objdir [get-env BUILDDIR objdir]

make-config-header $objdir/include/autoconf.h
make-tmake-settings $objdir/settings.conf {[A-Z]*} *dir lib_*
}

	autosetup_check_create project.spec \
{# Initial project.spec created by 'autosetup --init=tmake'

tmake-require-version 0.7.3

# vim:set syntax=tcl:
define? DESTDIR _install

# XXX If configure creates additional/different files than include/autoconf.h
#     that should be reflected here
Autosetup include/autoconf.h

# e.g. for autoconf.h
IncludePaths include

ifconfig !CONFIGURED {
	# Not configured, so don't process subdirs
	AutoSubDirs off
	# And don't process this file any further
	ifconfig false
}
}

	set configure [readfile configure]
	# XXX Do we need also need to support a system install of tmake?
	if {[string first {#@TMAKEUPDATED@} $configure] < 0} {
		if {[regsub {#@@INITCHECK@@#} $configure \
			{test -z "$TMAKE" -a -x "$dir/tmake" \&\& exec "$dir/tmake" --force --configure "$@"; #@TMAKEUPDATED@} configure]} {
			writefile configure $configure\n
			exec chmod +x configure
			puts "Updated configure to invoke local tmake."
			if {![file exec autosetup/tmake]} {
				puts "Warning: autosetup/tmake is missing."
				puts "   Install it with: tmake --install=autosetup"
			}
		} else {
			puts "Warning: configure isn't created by a recent autosetup, not updating."
		}
	} else {
		puts "I see configure for tmake already exists."
	}
	if {![file exists build.spec]} {
		puts "Note: I don't see build.spec. Try running: tmake --genie"
	}
}
Added autosetup/tmake.tcl.




















































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# Copyright (c) 2011 WorkWare Systems http://www.workware.net.au/
# All rights reserved

# @synopsis:
#
# The 'tmake' module makes it easy to support the tmake build system.
#
# The following variables are set:
#
## CONFIGURED  - to indicate that the project is configured

use system

options {}

define CONFIGURED

# @make-tmake-settings outfile patterns ...
#
# Examines all defined variables which match the given patterns (defaults to '*')
# and writes a tmake-compatible .conf file defining those variables.
# For example, if 'ABC' is '"3 monkeys"' and 'ABC' matches a pattern, then the file will include:
#
## define ABC {3 monkeys}
#
# If the file would be unchanged, it is not written.
#
# Typical usage is:
#
## make-tmake-settings [get-env BUILDDIR objdir]/settings.conf {[A-Z]*}
proc make-tmake-settings {file args} {
	file mkdir [file dirname $file]
	set lines {}

	if {[llength $args] == 0} {
		set args *
	}

	foreach n [lsort [dict keys [all-defines]]] {
		foreach p $args {
			if {[string match $p $n]} {
				set value [get-define $n]
				lappend lines "define $n [list $value]"
				break
			}
		}
	}
	set buf [join $lines \n]
	write-if-changed $file $buf {
		msg-result "Created $file"
	}
}
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===============================================================================

First experimental codes ...

tools/import-cvs.tcl
tools/lib/rcsparser.tcl

No actual import, right now only working on getting csets right. The
code uses CVSROOT/history as foundation, and augments that with data
from the individual RCS files (commit messages).

Statistics of a run ...
	3516 csets.

	1545 breaks on user change
	 558 breaks on file duplicate
	  13 breaks on branch/trunk change
	1402 breaks on commit message change

Time statistics ...
	3297 were processed in <= 1 seconds (93.77%)
	 217 were processed in between 2 seconds and 14 minutes.
	   1 was  processed in ~41 minutes
	   1 was  processed in ~22 hours

Time fuzz - Differences between csets range from 0 seconds to 66
days. Needs stats analysis to see if there is an obvious break. Even
so the times within csets and between csets overlap a great deal,
making time a bad criterium for cset separation, IMHO.

Leaving that topic, back to the current cset separator ...

It has a problem:
	The history file is not starting at the root!

Examples:
	The first three changesets are

	=============================/user
	M {Wed Nov 22 09:28:49 AM PST 2000} ericm 1.4 tcllib/modules/ftpd/ChangeLog
	M {Wed Nov 22 09:28:49 AM PST 2000} ericm 1.7 tcllib/modules/ftpd/ftpd.tcl
	files: 2
	delta: 0
	range: 0 seconds
	=============================/cmsg
	M {Wed Nov 29 02:14:33 PM PST 2000} ericm 1.3 tcllib/aclocal.m4
	files: 1
	delta: 
	range: 0 seconds
	=============================/cmsg
	M {Sun Feb 04 12:28:35 AM PST 2001} ericm 1.9 tcllib/modules/mime/ChangeLog
	M {Sun Feb 04 12:28:35 AM PST 2001} ericm 1.12 tcllib/modules/mime/mime.tcl
	files: 2
	delta: 0
	range: 0 seconds

All csets modify files which already have several revisions. We have
no csets from before that in the history, but these csets are in the
RCS files.

I wonder, is SF maybe removing old entries from the history when it
grows too large ?

This also affects incremental import ... I cannot assume that the
history always grows. It may shrink ... I cannot keep an offset, will
have to record the time of the last entry, or even the full entry
processed last, to allow me to skip ahead to anything not known yet.

I might have to try to implement the algorithm outlined below,
matching the revision trees of the individual RCS files to each other
to form the global tree of revisions. Maybe we can use the history to
help in the matchup, for the parts where we do have it.

Wait. This might be easier ... Take the delta information from the RCS
files and generate a fake history ... Actually, this might even allow
us to create a total history ... No, not quite, the merge entries the
actual history may contain will be missing. These we can mix in from
the actual history, as much as we have.

Still, lets try that, a fake history, and then run this script on it
to see if/where are differences.

===============================================================================


Notes about CVS import, regarding CVS.

- Problem: CVS does not really track changesets, but only individual
  revisions of files. To recover changesets it is necessary to look at
  author, branch, timestamp information, and the commit messages. Even
  so this is only heuristic, not foolproof.

  Existing tool: cvsps.

  Processes the output of 'cvs log' to recover changesets. Problem:
  Sees only a linear list of revisions, does not see branchpoints,
  etc. Cannot use the tree structure to help in making the decisions.

- Problem: CVS does not track merge-points at all. Recovery through
  heuristics is brittle at best, looking for keywords in commit
  messages which might indicate that a branch was merged with some
  other.


Ideas regarding an algorithm to recover changesets.

Key feature: Uses the per-file revision trees to help in uncovering
the underlying changesets and global revision tree G.

The per-file revision tree for a file X is in essence the global
revision tree with all nodes not pertaining to X removed from it. In
the reverse this allows us to built up the global revision tree from
the per-file trees by matching nodes to each other and extending.

Start with the per file revision tree of a single file as initial
approximation of the global tree. All nodes of this tree refer to the
revision of the file belonging to it, and through that the file
itself. At each step the global tree contains the nodes for a finite
set of files, and all nodes in the tree refer to revisions of all
files in the set, making the mapping total.

To add a file X to the tree take the per-file revision tree R and
performs the following actions:

- For each node N in R use the tuple <author, branch, commit message>
  to identify a set of nodes in G which may match N. Use the timestamp
  to locate the node nearest in time.

- This process will leave nodes in N unmapped. If there are unmapped
  nodes which have no neighbouring mapped nodes we have to
  abort.

  Otherwise take the nodes which have mapped neighbours. Trace the
  edges and see which of these nodes are connected in the local
  tree. Then look at the identified neighbours and trace their
  connections.

  If two global nodes have a direct connection, but a multi-edge
  connection in the local tree insert global nodes mapping to the
  local nodes and map them together. This expands the global tree to
  hold the revisions added by the new file.

  Otherwise, both sides have multi-edge connections then abort. This
  looks like a merge of two different branches, but there are no such
  in CVS ... Wait ... sort the nodes over time and fit the new nodes
  in between the other nodes, per the timestamps. We have overlapping
  / alternating changes to one file and others.

  A last possibility is that a node is only connected to a mapped
  parent. This may be a new branch, or again an alternating change on
  the given line. Symbols on the revisions will help to map this.

- We now have an extended global tree which incorporates the revisions
  of the new file. However new nodes will refer only to the new file,
  and old nodes may not refer to the new file. This has to be fixed,
  as all nodes have to refer to all files.

  Run over the tree and look at each parent/child pair. If a file is
  not referenced in the child, but the parent, then copy a reference
  to the file revision on the parent forward to the child. This
  signals that the file did not change in the given revision.

- After all files have been integrated in this manner we have global
  revision tree capturing all changesets, including the unchanged
  files per changeset.


This algorithm has to be refined to also take Attic/ files into
account.

-------------------------------------------------------------------------

Two archive files mapping to the same user file. How are they
interleaved ?

(a)	sqlite/src/os_unix.h,v
(b)	sqlite/src/Attic/os_unix.h,v

Problem: Max version of (a) is 1.9
	 Max version of (b) is 1.11
	 cvs co 1.10 -> no longer in the repository.

This seems to indicate that the non-Attic file is relevant.

--------------------------------------------------------------------------

tcllib - more problems - tklib/pie.tcl,v -

invalid change text in
/home/aku/Projects/Tcl/Fossil/Devel/Examples/cvs-tcllib/tklib/modules/tkpiechart/pie.tcl,v

Possibly braces ?
Deleted ci_fossil.txt.
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To perform CVS imports for fossil we need at least the ability to
parse CVS files, i.e. RCS files, with slight differences.

For the general architecture of the import facility we have two major
paths to choose between.

One is to use an external tool which processes a cvs repository and
drives fossil through its CLI to insert the found changesets.

The other is to integrate the whole facility into the fossil binary
itself.

I dislike the second choice. It may be faster, as the implementation
can use all internal functionality of fossil to perform the import,
however it will also bloat the binary with functionality not needed
most of the time. Which becomes especially obvious if more importers
are to be written, like for monotone, bazaar, mercurial, bitkeeper,
git, SVN, Arc, etc. Keeping all this out of the core fossil binary is
IMHO more beneficial in the long term, also from a maintenance point
of view. The tools can evolve separately. Especially important for CVS
as it will have to deal with lots of broken repositories, all
different.

However, nothing speaks against looking for common parts in all
possible import tools, and having these in the fossil core, as a
general backend all importer may use. Something like that has already
been proposed: The deconstruct|reconstruct methods. For us, actually
only reconstruct is important. Taking an unordered collection of files
(data, and manifests) it generates a proper fossil repository.  With
that method implemented all import tools only have to generate the
necessary collection and then leave the main work of filling the
database to fossil itself.

The disadvantage of this method is however that it will gobble up a
lot of temporary space in the filesystem to hold all unique revisions
of all files in their expanded form.

It might be worthwhile to consider an extension of 'reconstruct' which
is able to incrementally add a set of files to an existing fossil
repository already containing revisions. In that case the import tool
can be changed to incrementally generate the collection for a
particular revision, import it, and iterate over all revisions in the
origin repository. This is of course also dependent on the origin
repository itself, how well it supports such incremental export.

This also leads to a possible method for performing the import using
only existing functionality ('reconstruct' has not been implemented
yet). Instead generating an unordered collection for each revision
generate a properly setup workspace, simply commit it. This will
require use of rm, add and update methods as well, to remove old and
enter new files, and point the fossil repository to the correct parent
revision from the new revision is derived.

The relative efficiency (in time) of these incremental methods versus
importing a complete collection of files encoding the entire origin
repository however is not clear.

----------------------------------

reconstruct

The core logic for handling content is in the file "content.c", in
particular the functions 'content_put' and 'content_deltify'. One of
the main users of these functions is in the file "checkin.c", see the
function 'commit_cmd'.

The logic is clear. The new modified files are simply stored without
delta-compression, using 'content_put'. And should fosssil have an id
for the _previous_ revision of the committed file it uses
'content_deltify' to convert the already stored data for that revision
into a delta with the just stored new revision as origin.

In other words, fossil produces reverse deltas, with leaf revisions
stored just zip-compressed (plain) and older revisions using both zip-
and delta-compression.

Of note is that the underlying logic in 'content_deltify' gives up on
delta compression if the involved files are either not large enough,
or if the achieved compression factor was not high enough. In that
case the old revision of the file is left plain.

The scheme can thus be called a 'truncated reverse delta'.

The manifest is created and committed after the modified files. It
uses the same logic as for the regular files. The new leaf is stored
plain, and storage of the parent manifest is modified to be a delta
with the current as origin.

Further note that for a checkin of a merge result oonly the primary
parent is modified in that way. The secondary parent, the one merged
into the current revision is not touched. I.e. from the storage layer
point of view this revision is still a leaf and the data is kept
stored plain, not delta-compressed.



Now the "reconstruct" can be done like so:

- Scan the files in the indicated directory, and look for a manifest.

- When the manifest has been found parse its contents and follow the
  chain of parent links to locate the root manifest (no parent).

- Import the files referenced by the root manifest, then the manifest
  itself. This can be done using a modified form of the 'commit_cmd'
  which does not have to construct a manifest on its own from vfile,
  vmerge, etc.

- After that recursively apply the import of the previous step to the
  children of the root, and so on.

For an incremental "reconstruct" the collection of files would not be
a single tree with a root, but a forest, and the roots to look for are
not manifests without parent, but with a parent which is already
present in the repository. After one such root has been found and
processed the unprocessed files have to be searched further for more
roots, and only if no such are found anymore will the remaining files
be considered as superfluous.

We can use the functions in "manifest.c" for the parsing and following
the parental chain.

Hm. But we have no direct child information. So the above algorithm
has to be modified, we have to scan all manifests before we start
importing, and we have to create a reverse index, from manifest to
children so that we can perform the import from root to leaves.
Added compat/tcl-8.6/generic/tcl.h.





























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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+
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/*
 * tcl.h --
 *
 *	This header file describes the externally-visible facilities of the
 *	Tcl interpreter.
 *
 * Copyright (c) 1987-1994 The Regents of the University of California.
 * Copyright (c) 1993-1996 Lucent Technologies.
 * Copyright (c) 1994-1998 Sun Microsystems, Inc.
 * Copyright (c) 1998-2000 by Scriptics Corporation.
 * Copyright (c) 2002 by Kevin B. Kenny.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#ifndef _TCL
#define _TCL

/*
 * For C++ compilers, use extern "C"
 */

#ifdef __cplusplus
extern "C" {
#endif

/*
 * The following defines are used to indicate the various release levels.
 */

#define TCL_ALPHA_RELEASE	0
#define TCL_BETA_RELEASE	1
#define TCL_FINAL_RELEASE	2

/*
 * When version numbers change here, must also go into the following files and
 * update the version numbers:
 *
 * library/init.tcl	(1 LOC patch)
 * unix/configure.in	(2 LOC Major, 2 LOC minor, 1 LOC patch)
 * win/configure.in	(as above)
 * win/tcl.m4		(not patchlevel)
 * win/makefile.bc	(not patchlevel) 2 LOC
 * README		(sections 0 and 2, with and without separator)
 * macosx/Tcl.pbproj/project.pbxproj (not patchlevel) 1 LOC
 * macosx/Tcl.pbproj/default.pbxuser (not patchlevel) 1 LOC
 * macosx/Tcl.xcode/project.pbxproj (not patchlevel) 2 LOC
 * macosx/Tcl.xcode/default.pbxuser (not patchlevel) 1 LOC
 * macosx/Tcl-Common.xcconfig (not patchlevel) 1 LOC
 * win/README		(not patchlevel) (sections 0 and 2)
 * unix/tcl.spec	(1 LOC patch)
 * tools/tcl.hpj.in	(not patchlevel, for windows installer)
 */

#define TCL_MAJOR_VERSION   8
#define TCL_MINOR_VERSION   6
#define TCL_RELEASE_LEVEL   TCL_FINAL_RELEASE
#define TCL_RELEASE_SERIAL  0

#define TCL_VERSION	    "8.6"
#define TCL_PATCH_LEVEL	    "8.6.0"

/*
 *----------------------------------------------------------------------------
 * The following definitions set up the proper options for Windows compilers.
 * We use this method because there is no autoconf equivalent.
 */

#ifndef __WIN32__
#   if defined(_WIN32) || defined(WIN32) || defined(__MINGW32__) || defined(__BORLANDC__) || (defined(__WATCOMC__) && defined(__WINDOWS_386__))
#	define __WIN32__
#	ifndef WIN32
#	    define WIN32
#	endif
#	ifndef _WIN32
#	    define _WIN32
#	endif
#   endif
#endif

/*
 * STRICT: See MSDN Article Q83456
 */

#ifdef __WIN32__
#   ifndef STRICT
#	define STRICT
#   endif
#endif /* __WIN32__ */

/*
 * Utility macros: STRINGIFY takes an argument and wraps it in "" (double
 * quotation marks), JOIN joins two arguments.
 */

#ifndef STRINGIFY
#  define STRINGIFY(x) STRINGIFY1(x)
#  define STRINGIFY1(x) #x
#endif
#ifndef JOIN
#  define JOIN(a,b) JOIN1(a,b)
#  define JOIN1(a,b) a##b
#endif

/*
 * A special definition used to allow this header file to be included from
 * windows resource files so that they can obtain version information.
 * RC_INVOKED is defined by default by the windows RC tool.
 *
 * Resource compilers don't like all the C stuff, like typedefs and function
 * declarations, that occur below, so block them out.
 */

#ifndef RC_INVOKED

/*
 * Special macro to define mutexes, that doesn't do anything if we are not
 * using threads.
 */

#ifdef TCL_THREADS
#define TCL_DECLARE_MUTEX(name) static Tcl_Mutex name;
#else
#define TCL_DECLARE_MUTEX(name)
#endif

/*
 * Tcl's public routine Tcl_FSSeek() uses the values SEEK_SET, SEEK_CUR, and
 * SEEK_END, all #define'd by stdio.h .
 *
 * Also, many extensions need stdio.h, and they've grown accustomed to tcl.h
 * providing it for them rather than #include-ing it themselves as they
 * should, so also for their sake, we keep the #include to be consistent with
 * prior Tcl releases.
 */

#include <stdio.h>

/*
 *----------------------------------------------------------------------------
 * Support for functions with a variable number of arguments.
 *
 * The following TCL_VARARGS* macros are to support old extensions
 * written for older versions of Tcl where the macros permitted
 * support for the varargs.h system as well as stdarg.h .
 *
 * New code should just directly be written to use stdarg.h conventions.
 */

#include <stdarg.h>
#ifndef TCL_NO_DEPRECATED
#    define TCL_VARARGS(type, name) (type name, ...)
#    define TCL_VARARGS_DEF(type, name) (type name, ...)
#    define TCL_VARARGS_START(type, name, list) (va_start(list, name), name)
#endif
#if defined(__GNUC__) && (__GNUC__ > 2)
#   define TCL_FORMAT_PRINTF(a,b) __attribute__ ((__format__ (__printf__, a, b)))
#else
#   define TCL_FORMAT_PRINTF(a,b)
#endif

/*
 * Allow a part of Tcl's API to be explicitly marked as deprecated.
 *
 * Used to make TIP 330/336 generate moans even if people use the
 * compatibility macros. Change your code, guys! We won't support you forever.
 */

#if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
#   if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC__MINOR__ >= 5))
#	define TCL_DEPRECATED_API(msg)	__attribute__ ((__deprecated__ (msg)))
#   else
#	define TCL_DEPRECATED_API(msg)	__attribute__ ((__deprecated__))
#   endif
#else
#   define TCL_DEPRECATED_API(msg)	/* nothing portable */
#endif

/*
 *----------------------------------------------------------------------------
 * Macros used to declare a function to be exported by a DLL. Used by Windows,
 * maps to no-op declarations on non-Windows systems. The default build on
 * windows is for a DLL, which causes the DLLIMPORT and DLLEXPORT macros to be
 * nonempty. To build a static library, the macro STATIC_BUILD should be
 * defined.
 *
 * Note: when building static but linking dynamically to MSVCRT we must still
 *       correctly decorate the C library imported function.  Use CRTIMPORT
 *       for this purpose.  _DLL is defined by the compiler when linking to
 *       MSVCRT.
 */

#if (defined(__WIN32__) && (defined(_MSC_VER) || (__BORLANDC__ >= 0x0550) || defined(__LCC__) || defined(__WATCOMC__) || (defined(__GNUC__) && defined(__declspec))))
#   define HAVE_DECLSPEC 1
#   ifdef STATIC_BUILD
#       define DLLIMPORT
#       define DLLEXPORT
#       ifdef _DLL
#           define CRTIMPORT __declspec(dllimport)
#       else
#           define CRTIMPORT
#       endif
#   else
#       define DLLIMPORT __declspec(dllimport)
#       define DLLEXPORT __declspec(dllexport)
#       define CRTIMPORT __declspec(dllimport)
#   endif
#else
#   define DLLIMPORT
#   if defined(__GNUC__) && __GNUC__ > 3
#       define DLLEXPORT __attribute__ ((visibility("default")))
#   else
#       define DLLEXPORT
#   endif
#   define CRTIMPORT
#endif

/*
 * These macros are used to control whether functions are being declared for
 * import or export. If a function is being declared while it is being built
 * to be included in a shared library, then it should have the DLLEXPORT
 * storage class. If is being declared for use by a module that is going to
 * link against the shared library, then it should have the DLLIMPORT storage
 * class. If the symbol is beind declared for a static build or for use from a
 * stub library, then the storage class should be empty.
 *
 * The convention is that a macro called BUILD_xxxx, where xxxx is the name of
 * a library we are building, is set on the compile line for sources that are
 * to be placed in the library. When this macro is set, the storage class will
 * be set to DLLEXPORT. At the end of the header file, the storage class will
 * be reset to DLLIMPORT.
 */

#undef TCL_STORAGE_CLASS
#ifdef BUILD_tcl
#   define TCL_STORAGE_CLASS DLLEXPORT
#else
#   ifdef USE_TCL_STUBS
#      define TCL_STORAGE_CLASS
#   else
#      define TCL_STORAGE_CLASS DLLIMPORT
#   endif
#endif

/*
 * The following _ANSI_ARGS_ macro is to support old extensions
 * written for older versions of Tcl where it permitted support
 * for compilers written in the pre-prototype era of C.
 *
 * New code should use prototypes.
 */

#ifndef TCL_NO_DEPRECATED
#   undef _ANSI_ARGS_
#   define _ANSI_ARGS_(x)	x
#endif

/*
 * Definitions that allow this header file to be used either with or without
 * ANSI C features.
 */

#ifndef INLINE
#   define INLINE
#endif

#ifdef NO_CONST
#   ifndef const
#      define const
#   endif
#endif
#ifndef CONST
#   define CONST const
#endif

#ifdef USE_NON_CONST
#   ifdef USE_COMPAT_CONST
#      error define at most one of USE_NON_CONST and USE_COMPAT_CONST
#   endif
#   define CONST84
#   define CONST84_RETURN
#else
#   ifdef USE_COMPAT_CONST
#      define CONST84
#      define CONST84_RETURN const
#   else
#      define CONST84 const
#      define CONST84_RETURN const
#   endif
#endif

#ifndef CONST86
#      define CONST86 CONST84
#endif

/*
 * Make sure EXTERN isn't defined elsewhere.
 */

#ifdef EXTERN
#   undef EXTERN
#endif /* EXTERN */

#ifdef __cplusplus
#   define EXTERN extern "C" TCL_STORAGE_CLASS
#else
#   define EXTERN extern TCL_STORAGE_CLASS
#endif

/*
 *----------------------------------------------------------------------------
 * The following code is copied from winnt.h. If we don't replicate it here,
 * then <windows.h> can't be included after tcl.h, since tcl.h also defines
 * VOID. This block is skipped under Cygwin and Mingw.
 */

#if defined(__WIN32__) && !defined(HAVE_WINNT_IGNORE_VOID)
#ifndef VOID
#define VOID void
typedef char CHAR;
typedef short SHORT;
typedef long LONG;
#endif
#endif /* __WIN32__ && !HAVE_WINNT_IGNORE_VOID */

/*
 * Macro to use instead of "void" for arguments that must have type "void *"
 * in ANSI C; maps them to type "char *" in non-ANSI systems.
 */

#ifndef NO_VOID
#   define VOID void
#else
#   define VOID char
#endif

/*
 * Miscellaneous declarations.
 */

#ifndef _CLIENTDATA
#   ifndef NO_VOID
	typedef void *ClientData;
#   else
	typedef int *ClientData;
#   endif
#   define _CLIENTDATA
#endif

/*
 * Darwin specific configure overrides (to support fat compiles, where
 * configure runs only once for multiple architectures):
 */

#ifdef __APPLE__
#   ifdef __LP64__
#	undef TCL_WIDE_INT_TYPE
#	define TCL_WIDE_INT_IS_LONG 1
#	define TCL_CFG_DO64BIT 1
#    else /* !__LP64__ */
#	define TCL_WIDE_INT_TYPE long long
#	undef TCL_WIDE_INT_IS_LONG
#	undef TCL_CFG_DO64BIT
#    endif /* __LP64__ */
#    undef HAVE_STRUCT_STAT64
#endif /* __APPLE__ */

/*
 * Define Tcl_WideInt to be a type that is (at least) 64-bits wide, and define
 * Tcl_WideUInt to be the unsigned variant of that type (assuming that where
 * we have one, we can have the other.)
 *
 * Also defines the following macros:
 * TCL_WIDE_INT_IS_LONG - if wide ints are really longs (i.e. we're on a real
 *	64-bit system.)
 * Tcl_WideAsLong - forgetful converter from wideInt to long.
 * Tcl_LongAsWide - sign-extending converter from long to wideInt.
 * Tcl_WideAsDouble - converter from wideInt to double.
 * Tcl_DoubleAsWide - converter from double to wideInt.
 *
 * The following invariant should hold for any long value 'longVal':
 *	longVal == Tcl_WideAsLong(Tcl_LongAsWide(longVal))
 *
 * Note on converting between Tcl_WideInt and strings. This implementation (in
 * tclObj.c) depends on the function
 * sprintf(...,"%" TCL_LL_MODIFIER "d",...).
 */

#if !defined(TCL_WIDE_INT_TYPE)&&!defined(TCL_WIDE_INT_IS_LONG)
#   if defined(__WIN32__)
#      define TCL_WIDE_INT_TYPE __int64
#      ifdef __BORLANDC__
#         define TCL_LL_MODIFIER	"L"
#      else /* __BORLANDC__ */
#         define TCL_LL_MODIFIER	"I64"
#      endif /* __BORLANDC__ */
#   elif defined(__GNUC__)
#      define TCL_WIDE_INT_TYPE long long
#      define TCL_LL_MODIFIER	"ll"
#   else /* ! __WIN32__ && ! __GNUC__ */
/*
 * Don't know what platform it is and configure hasn't discovered what is
 * going on for us. Try to guess...
 */
#      ifdef NO_LIMITS_H
#	  error please define either TCL_WIDE_INT_TYPE or TCL_WIDE_INT_IS_LONG
#      else /* !NO_LIMITS_H */
#	  include <limits.h>
#	  if (INT_MAX < LONG_MAX)
#	     define TCL_WIDE_INT_IS_LONG	1
#	  else
#	     define TCL_WIDE_INT_TYPE long long
#         endif
#      endif /* NO_LIMITS_H */
#   endif /* __WIN32__ */
#endif /* !TCL_WIDE_INT_TYPE & !TCL_WIDE_INT_IS_LONG */
#ifdef TCL_WIDE_INT_IS_LONG
#   undef TCL_WIDE_INT_TYPE
#   define TCL_WIDE_INT_TYPE	long
#endif /* TCL_WIDE_INT_IS_LONG */

typedef TCL_WIDE_INT_TYPE		Tcl_WideInt;
typedef unsigned TCL_WIDE_INT_TYPE	Tcl_WideUInt;

#ifdef TCL_WIDE_INT_IS_LONG
#   define Tcl_WideAsLong(val)		((long)(val))
#   define Tcl_LongAsWide(val)		((long)(val))
#   define Tcl_WideAsDouble(val)	((double)((long)(val)))
#   define Tcl_DoubleAsWide(val)	((long)((double)(val)))
#   ifndef TCL_LL_MODIFIER
#      define TCL_LL_MODIFIER		"l"
#   endif /* !TCL_LL_MODIFIER */
#else /* TCL_WIDE_INT_IS_LONG */
/*
 * The next short section of defines are only done when not running on Windows
 * or some other strange platform.
 */
#   ifndef TCL_LL_MODIFIER
#      define TCL_LL_MODIFIER		"ll"
#   endif /* !TCL_LL_MODIFIER */
#   define Tcl_WideAsLong(val)		((long)((Tcl_WideInt)(val)))
#   define Tcl_LongAsWide(val)		((Tcl_WideInt)((long)(val)))
#   define Tcl_WideAsDouble(val)	((double)((Tcl_WideInt)(val)))
#   define Tcl_DoubleAsWide(val)	((Tcl_WideInt)((double)(val)))
#endif /* TCL_WIDE_INT_IS_LONG */

#if defined(__WIN32__)
#   ifdef __BORLANDC__
	typedef struct stati64 Tcl_StatBuf;
#   elif defined(_WIN64)
	typedef struct __stat64 Tcl_StatBuf;
#   elif (defined(_MSC_VER) && (_MSC_VER < 1400)) || defined(_USE_32BIT_TIME_T)
	typedef struct _stati64	Tcl_StatBuf;
#   else
	typedef struct _stat32i64 Tcl_StatBuf;
#   endif /* _MSC_VER < 1400 */
#elif defined(__CYGWIN__)
    typedef struct _stat32i64 {
	dev_t st_dev;
	unsigned short st_ino;
	unsigned short st_mode;
	short st_nlink;
	short st_uid;
	short st_gid;
	/* Here is a 2-byte gap */
	dev_t st_rdev;
	/* Here is a 4-byte gap */
	long long st_size;
	struct {long tv_sec;} st_atim;
	struct {long tv_sec;} st_mtim;
	struct {long tv_sec;} st_ctim;
	/* Here is a 4-byte gap */
    } Tcl_StatBuf;
#elif defined(HAVE_STRUCT_STAT64)
    typedef struct stat64 Tcl_StatBuf;
#else
    typedef struct stat Tcl_StatBuf;
#endif

/*
 *----------------------------------------------------------------------------
 * Data structures defined opaquely in this module. The definitions below just
 * provide dummy types. A few fields are made visible in Tcl_Interp
 * structures, namely those used for returning a string result from commands.
 * Direct access to the result field is discouraged in Tcl 8.0. The
 * interpreter result is either an object or a string, and the two values are
 * kept consistent unless some C code sets interp->result directly.
 * Programmers should use either the function Tcl_GetObjResult() or
 * Tcl_GetStringResult() to read the interpreter's result. See the SetResult
 * man page for details.
 *
 * Note: any change to the Tcl_Interp definition below must be mirrored in the
 * "real" definition in tclInt.h.
 *
 * Note: Tcl_ObjCmdProc functions do not directly set result and freeProc.
 * Instead, they set a Tcl_Obj member in the "real" structure that can be
 * accessed with Tcl_GetObjResult() and Tcl_SetObjResult().
 */

typedef struct Tcl_Interp
#ifndef TCL_NO_DEPRECATED
{
    /* TIP #330: Strongly discourage extensions from using the string
     * result. */
#ifdef USE_INTERP_RESULT
    char *result TCL_DEPRECATED_API("use Tcl_GetResult/Tcl_SetResult");
				/* If the last command returned a string
				 * result, this points to it. */
    void (*freeProc) (char *blockPtr)
	    TCL_DEPRECATED_API("use Tcl_GetResult/Tcl_SetResult");
				/* Zero means the string result is statically
				 * allocated. TCL_DYNAMIC means it was
				 * allocated with ckalloc and should be freed
				 * with ckfree. Other values give the address
				 * of function to invoke to free the result.
				 * Tcl_Eval must free it before executing next
				 * command. */
#else
    char *resultDontUse; /* Don't use in extensions! */
    void (*freeProcDontUse) (char *); /* Don't use in extensions! */
#endif
#ifdef USE_INTERP_ERRORLINE
    int errorLine TCL_DEPRECATED_API("use Tcl_GetErrorLine/Tcl_SetErrorLine");
				/* When TCL_ERROR is returned, this gives the
				 * line number within the command where the
				 * error occurred (1 if first line). */
#else
    int errorLineDontUse; /* Don't use in extensions! */
#endif
}
#endif /* TCL_NO_DEPRECATED */
Tcl_Interp;

typedef struct Tcl_AsyncHandler_ *Tcl_AsyncHandler;
typedef struct Tcl_Channel_ *Tcl_Channel;
typedef struct Tcl_ChannelTypeVersion_ *Tcl_ChannelTypeVersion;
typedef struct Tcl_Command_ *Tcl_Command;
typedef struct Tcl_Condition_ *Tcl_Condition;
typedef struct Tcl_Dict_ *Tcl_Dict;
typedef struct Tcl_EncodingState_ *Tcl_EncodingState;
typedef struct Tcl_Encoding_ *Tcl_Encoding;
typedef struct Tcl_Event Tcl_Event;
typedef struct Tcl_InterpState_ *Tcl_InterpState;
typedef struct Tcl_LoadHandle_ *Tcl_LoadHandle;
typedef struct Tcl_Mutex_ *Tcl_Mutex;
typedef struct Tcl_Pid_ *Tcl_Pid;
typedef struct Tcl_RegExp_ *Tcl_RegExp;
typedef struct Tcl_ThreadDataKey_ *Tcl_ThreadDataKey;
typedef struct Tcl_ThreadId_ *Tcl_ThreadId;
typedef struct Tcl_TimerToken_ *Tcl_TimerToken;
typedef struct Tcl_Trace_ *Tcl_Trace;
typedef struct Tcl_Var_ *Tcl_Var;
typedef struct Tcl_ZLibStream_ *Tcl_ZlibStream;

/*
 *----------------------------------------------------------------------------
 * Definition of the interface to functions implementing threads. A function
 * following this definition is given to each call of 'Tcl_CreateThread' and
 * will be called as the main fuction of the new thread created by that call.
 */

#if defined __WIN32__
typedef unsigned (__stdcall Tcl_ThreadCreateProc) (ClientData clientData);
#else
typedef void (Tcl_ThreadCreateProc) (ClientData clientData);
#endif

/*
 * Threading function return types used for abstracting away platform
 * differences when writing a Tcl_ThreadCreateProc. See the NewThread function
 * in generic/tclThreadTest.c for it's usage.
 */

#if defined __WIN32__
#   define Tcl_ThreadCreateType		unsigned __stdcall
#   define TCL_THREAD_CREATE_RETURN	return 0
#else
#   define Tcl_ThreadCreateType		void
#   define TCL_THREAD_CREATE_RETURN
#endif

/*
 * Definition of values for default stacksize and the possible flags to be
 * given to Tcl_CreateThread.
 */

#define TCL_THREAD_STACK_DEFAULT (0)    /* Use default size for stack. */
#define TCL_THREAD_NOFLAGS	 (0000) /* Standard flags, default
					 * behaviour. */
#define TCL_THREAD_JOINABLE	 (0001) /* Mark the thread as joinable. */

/*
 * Flag values passed to Tcl_StringCaseMatch.
 */

#define TCL_MATCH_NOCASE	(1<<0)

/*
 * Flag values passed to Tcl_GetRegExpFromObj.
 */

#define	TCL_REG_BASIC		000000	/* BREs (convenience). */
#define	TCL_REG_EXTENDED	000001	/* EREs. */
#define	TCL_REG_ADVF		000002	/* Advanced features in EREs. */
#define	TCL_REG_ADVANCED	000003	/* AREs (which are also EREs). */
#define	TCL_REG_QUOTE		000004	/* No special characters, none. */
#define	TCL_REG_NOCASE		000010	/* Ignore case. */
#define	TCL_REG_NOSUB		000020	/* Don't care about subexpressions. */
#define	TCL_REG_EXPANDED	000040	/* Expanded format, white space &
					 * comments. */
#define	TCL_REG_NLSTOP		000100  /* \n doesn't match . or [^ ] */
#define	TCL_REG_NLANCH		000200  /* ^ matches after \n, $ before. */
#define	TCL_REG_NEWLINE		000300  /* Newlines are line terminators. */
#define	TCL_REG_CANMATCH	001000  /* Report details on partial/limited
					 * matches. */

/*
 * Flags values passed to Tcl_RegExpExecObj.
 */

#define	TCL_REG_NOTBOL	0001	/* Beginning of string does not match ^.  */
#define	TCL_REG_NOTEOL	0002	/* End of string does not match $. */

/*
 * Structures filled in by Tcl_RegExpInfo. Note that all offset values are
 * relative to the start of the match string, not the beginning of the entire
 * string.
 */

typedef struct Tcl_RegExpIndices {
    long start;			/* Character offset of first character in
				 * match. */
    long end;			/* Character offset of first character after
				 * the match. */
} Tcl_RegExpIndices;

typedef struct Tcl_RegExpInfo {
    int nsubs;			/* Number of subexpressions in the compiled
				 * expression. */
    Tcl_RegExpIndices *matches;	/* Array of nsubs match offset pairs. */
    long extendStart;		/* The offset at which a subsequent match
				 * might begin. */
    long reserved;		/* Reserved for later use. */
} Tcl_RegExpInfo;

/*
 * Picky compilers complain if this typdef doesn't appear before the struct's
 * reference in tclDecls.h.
 */

typedef Tcl_StatBuf *Tcl_Stat_;
typedef struct stat *Tcl_OldStat_;

/*
 *----------------------------------------------------------------------------
 * When a TCL command returns, the interpreter contains a result from the
 * command. Programmers are strongly encouraged to use one of the functions
 * Tcl_GetObjResult() or Tcl_GetStringResult() to read the interpreter's
 * result. See the SetResult man page for details. Besides this result, the
 * command function returns an integer code, which is one of the following:
 *
 * TCL_OK		Command completed normally; the interpreter's result
 *			contains the command's result.
 * TCL_ERROR		The command couldn't be completed successfully; the
 *			interpreter's result describes what went wrong.
 * TCL_RETURN		The command requests that the current function return;
 *			the interpreter's result contains the function's
 *			return value.
 * TCL_BREAK		The command requests that the innermost loop be
 *			exited; the interpreter's result is meaningless.
 * TCL_CONTINUE		Go on to the next iteration of the current loop; the
 *			interpreter's result is meaningless.
 */

#define TCL_OK			0
#define TCL_ERROR		1
#define TCL_RETURN		2
#define TCL_BREAK		3
#define TCL_CONTINUE		4

#define TCL_RESULT_SIZE		200

/*
 *----------------------------------------------------------------------------
 * Flags to control what substitutions are performed by Tcl_SubstObj():
 */

#define TCL_SUBST_COMMANDS	001
#define TCL_SUBST_VARIABLES	002
#define TCL_SUBST_BACKSLASHES	004
#define TCL_SUBST_ALL		007

/*
 * Argument descriptors for math function callbacks in expressions:
 */

typedef enum {
    TCL_INT, TCL_DOUBLE, TCL_EITHER, TCL_WIDE_INT
} Tcl_ValueType;

typedef struct Tcl_Value {
    Tcl_ValueType type;		/* Indicates intValue or doubleValue is valid,
				 * or both. */
    long intValue;		/* Integer value. */
    double doubleValue;		/* Double-precision floating value. */
    Tcl_WideInt wideValue;	/* Wide (min. 64-bit) integer value. */
} Tcl_Value;

/*
 * Forward declaration of Tcl_Obj to prevent an error when the forward
 * reference to Tcl_Obj is encountered in the function types declared below.
 */

struct Tcl_Obj;

/*
 *----------------------------------------------------------------------------
 * Function types defined by Tcl:
 */

typedef int (Tcl_AppInitProc) (Tcl_Interp *interp);
typedef int (Tcl_AsyncProc) (ClientData clientData, Tcl_Interp *interp,
	int code);
typedef void (Tcl_ChannelProc) (ClientData clientData, int mask);
typedef void (Tcl_CloseProc) (ClientData data);
typedef void (Tcl_CmdDeleteProc) (ClientData clientData);
typedef int (Tcl_CmdProc) (ClientData clientData, Tcl_Interp *interp,
	int argc, CONST84 char *argv[]);
typedef void (Tcl_CmdTraceProc) (ClientData clientData, Tcl_Interp *interp,
	int level, char *command, Tcl_CmdProc *proc,
	ClientData cmdClientData, int argc, CONST84 char *argv[]);
typedef int (Tcl_CmdObjTraceProc) (ClientData clientData, Tcl_Interp *interp,
	int level, const char *command, Tcl_Command commandInfo, int objc,
	struct Tcl_Obj *const *objv);
typedef void (Tcl_CmdObjTraceDeleteProc) (ClientData clientData);
typedef void (Tcl_DupInternalRepProc) (struct Tcl_Obj *srcPtr,
	struct Tcl_Obj *dupPtr);
typedef int (Tcl_EncodingConvertProc) (ClientData clientData, const char *src,
	int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst,
	int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr);
typedef void (Tcl_EncodingFreeProc) (ClientData clientData);
typedef int (Tcl_EventProc) (Tcl_Event *evPtr, int flags);
typedef void (Tcl_EventCheckProc) (ClientData clientData, int flags);
typedef int (Tcl_EventDeleteProc) (Tcl_Event *evPtr, ClientData clientData);
typedef void (Tcl_EventSetupProc) (ClientData clientData, int flags);
typedef void (Tcl_ExitProc) (ClientData clientData);
typedef void (Tcl_FileProc) (ClientData clientData, int mask);
typedef void (Tcl_FileFreeProc) (ClientData clientData);
typedef void (Tcl_FreeInternalRepProc) (struct Tcl_Obj *objPtr);
typedef void (Tcl_FreeProc) (char *blockPtr);
typedef void (Tcl_IdleProc) (ClientData clientData);
typedef void (Tcl_InterpDeleteProc) (ClientData clientData,
	Tcl_Interp *interp);
typedef int (Tcl_MathProc) (ClientData clientData, Tcl_Interp *interp,
	Tcl_Value *args, Tcl_Value *resultPtr);
typedef void (Tcl_NamespaceDeleteProc) (ClientData clientData);
typedef int (Tcl_ObjCmdProc) (ClientData clientData, Tcl_Interp *interp,
	int objc, struct Tcl_Obj *const *objv);
typedef int (Tcl_PackageInitProc) (Tcl_Interp *interp);
typedef int (Tcl_PackageUnloadProc) (Tcl_Interp *interp, int flags);
typedef void (Tcl_PanicProc) (const char *format, ...);
typedef void (Tcl_TcpAcceptProc) (ClientData callbackData, Tcl_Channel chan,
	char *address, int port);
typedef void (Tcl_TimerProc) (ClientData clientData);
typedef int (Tcl_SetFromAnyProc) (Tcl_Interp *interp, struct Tcl_Obj *objPtr);
typedef void (Tcl_UpdateStringProc) (struct Tcl_Obj *objPtr);
typedef char * (Tcl_VarTraceProc) (ClientData clientData, Tcl_Interp *interp,
	CONST84 char *part1, CONST84 char *part2, int flags);
typedef void (Tcl_CommandTraceProc) (ClientData clientData, Tcl_Interp *interp,
	const char *oldName, const char *newName, int flags);
typedef void (Tcl_CreateFileHandlerProc) (int fd, int mask, Tcl_FileProc *proc,
	ClientData clientData);
typedef void (Tcl_DeleteFileHandlerProc) (int fd);
typedef void (Tcl_AlertNotifierProc) (ClientData clientData);
typedef void (Tcl_ServiceModeHookProc) (int mode);
typedef ClientData (Tcl_InitNotifierProc) (void);
typedef void (Tcl_FinalizeNotifierProc) (ClientData clientData);
typedef void (Tcl_MainLoopProc) (void);

/*
 *----------------------------------------------------------------------------
 * The following structure represents a type of object, which is a particular
 * internal representation for an object plus a set of functions that provide
 * standard operations on objects of that type.
 */

typedef struct Tcl_ObjType {
    const char *name;		/* Name of the type, e.g. "int". */
    Tcl_FreeInternalRepProc *freeIntRepProc;
				/* Called to free any storage for the type's
				 * internal rep. NULL if the internal rep does
				 * not need freeing. */
    Tcl_DupInternalRepProc *dupIntRepProc;
				/* Called to create a new object as a copy of
				 * an existing object. */
    Tcl_UpdateStringProc *updateStringProc;
				/* Called to update the string rep from the
				 * type's internal representation. */
    Tcl_SetFromAnyProc *setFromAnyProc;
				/* Called to convert the object's internal rep
				 * to this type. Frees the internal rep of the
				 * old type. Returns TCL_ERROR on failure. */
} Tcl_ObjType;

/*
 * One of the following structures exists for each object in the Tcl system.
 * An object stores a value as either a string, some internal representation,
 * or both.
 */

typedef struct Tcl_Obj {
    int refCount;		/* When 0 the object will be freed. */
    char *bytes;		/* This points to the first byte of the
				 * object's string representation. The array
				 * must be followed by a null byte (i.e., at
				 * offset length) but may also contain
				 * embedded null characters. The array's
				 * storage is allocated by ckalloc. NULL means
				 * the string rep is invalid and must be
				 * regenerated from the internal rep.  Clients
				 * should use Tcl_GetStringFromObj or
				 * Tcl_GetString to get a pointer to the byte
				 * array as a readonly value. */
    int length;			/* The number of bytes at *bytes, not
				 * including the terminating null. */
    const Tcl_ObjType *typePtr;	/* Denotes the object's type. Always
				 * corresponds to the type of the object's
				 * internal rep. NULL indicates the object has
				 * no internal rep (has no type). */
    union {			/* The internal representation: */
	long longValue;		/*   - an long integer value. */
	double doubleValue;	/*   - a double-precision floating value. */
	void *otherValuePtr;	/*   - another, type-specific value. */
	Tcl_WideInt wideValue;	/*   - a long long value. */
	struct {		/*   - internal rep as two pointers. */
	    void *ptr1;
	    void *ptr2;
	} twoPtrValue;
	struct {		/*   - internal rep as a pointer and a long,
				 *     the main use of which is a bignum's
				 *     tightly packed fields, where the alloc,
				 *     used and signum flags are packed into a
				 *     single word with everything else hung
				 *     off the pointer. */
	    void *ptr;
	    unsigned long value;
	} ptrAndLongRep;
    } internalRep;
} Tcl_Obj;

/*
 * Macros to increment and decrement a Tcl_Obj's reference count, and to test
 * whether an object is shared (i.e. has reference count > 1). Note: clients
 * should use Tcl_DecrRefCount() when they are finished using an object, and
 * should never call TclFreeObj() directly. TclFreeObj() is only defined and
 * made public in tcl.h to support Tcl_DecrRefCount's macro definition.
 */

void		Tcl_IncrRefCount(Tcl_Obj *objPtr);
void		Tcl_DecrRefCount(Tcl_Obj *objPtr);
int		Tcl_IsShared(Tcl_Obj *objPtr);

/*
 *----------------------------------------------------------------------------
 * The following structure contains the state needed by Tcl_SaveResult. No-one
 * outside of Tcl should access any of these fields. This structure is
 * typically allocated on the stack.
 */

typedef struct Tcl_SavedResult {
    char *result;
    Tcl_FreeProc *freeProc;
    Tcl_Obj *objResultPtr;
    char *appendResult;
    int appendAvl;
    int appendUsed;
    char resultSpace[TCL_RESULT_SIZE+1];
} Tcl_SavedResult;

/*
 *----------------------------------------------------------------------------
 * The following definitions support Tcl's namespace facility. Note: the first
 * five fields must match exactly the fields in a Namespace structure (see
 * tclInt.h).
 */

typedef struct Tcl_Namespace {
    char *name;			/* The namespace's name within its parent
				 * namespace. This contains no ::'s. The name
				 * of the global namespace is "" although "::"
				 * is an synonym. */
    char *fullName;		/* The namespace's fully qualified name. This
				 * starts with ::. */
    ClientData clientData;	/* Arbitrary value associated with this
				 * namespace. */
    Tcl_NamespaceDeleteProc *deleteProc;
				/* Function invoked when deleting the
				 * namespace to, e.g., free clientData. */
    struct Tcl_Namespace *parentPtr;
				/* Points to the namespace that contains this
				 * one. NULL if this is the global
				 * namespace. */
} Tcl_Namespace;

/*
 *----------------------------------------------------------------------------
 * The following structure represents a call frame, or activation record. A
 * call frame defines a naming context for a procedure call: its local scope
 * (for local variables) and its namespace scope (used for non-local
 * variables; often the global :: namespace). A call frame can also define the
 * naming context for a namespace eval or namespace inscope command: the
 * namespace in which the command's code should execute. The Tcl_CallFrame
 * structures exist only while procedures or namespace eval/inscope's are
 * being executed, and provide a Tcl call stack.
 *
 * A call frame is initialized and pushed using Tcl_PushCallFrame and popped
 * using Tcl_PopCallFrame. Storage for a Tcl_CallFrame must be provided by the
 * Tcl_PushCallFrame caller, and callers typically allocate them on the C call
 * stack for efficiency. For this reason, Tcl_CallFrame is defined as a
 * structure and not as an opaque token. However, most Tcl_CallFrame fields
 * are hidden since applications should not access them directly; others are
 * declared as "dummyX".
 *
 * WARNING!! The structure definition must be kept consistent with the
 * CallFrame structure in tclInt.h. If you change one, change the other.
 */

typedef struct Tcl_CallFrame {
    Tcl_Namespace *nsPtr;
    int dummy1;
    int dummy2;
    void *dummy3;
    void *dummy4;
    void *dummy5;
    int dummy6;
    void *dummy7;
    void *dummy8;
    int dummy9;
    void *dummy10;
    void *dummy11;
    void *dummy12;
    void *dummy13;
} Tcl_CallFrame;

/*
 *----------------------------------------------------------------------------
 * Information about commands that is returned by Tcl_GetCommandInfo and
 * passed to Tcl_SetCommandInfo. objProc is an objc/objv object-based command
 * function while proc is a traditional Tcl argc/argv string-based function.
 * Tcl_CreateObjCommand and Tcl_CreateCommand ensure that both objProc and
 * proc are non-NULL and can be called to execute the command. However, it may
 * be faster to call one instead of the other. The member isNativeObjectProc
 * is set to 1 if an object-based function was registered by
 * Tcl_CreateObjCommand, and to 0 if a string-based function was registered by
 * Tcl_CreateCommand. The other function is typically set to a compatibility
 * wrapper that does string-to-object or object-to-string argument conversions
 * then calls the other function.
 */

typedef struct Tcl_CmdInfo {
    int isNativeObjectProc;	/* 1 if objProc was registered by a call to
				 * Tcl_CreateObjCommand; 0 otherwise.
				 * Tcl_SetCmdInfo does not modify this
				 * field. */
    Tcl_ObjCmdProc *objProc;	/* Command's object-based function. */
    ClientData objClientData;	/* ClientData for object proc. */
    Tcl_CmdProc *proc;		/* Command's string-based function. */
    ClientData clientData;	/* ClientData for string proc. */
    Tcl_CmdDeleteProc *deleteProc;
				/* Function to call when command is
				 * deleted. */
    ClientData deleteData;	/* Value to pass to deleteProc (usually the
				 * same as clientData). */
    Tcl_Namespace *namespacePtr;/* Points to the namespace that contains this
				 * command. Note that Tcl_SetCmdInfo will not
				 * change a command's namespace; use
				 * TclRenameCommand or Tcl_Eval (of 'rename')
				 * to do that. */
} Tcl_CmdInfo;

/*
 *----------------------------------------------------------------------------
 * The structure defined below is used to hold dynamic strings. The only
 * fields that clients should use are string and length, accessible via the
 * macros Tcl_DStringValue and Tcl_DStringLength.
 */

#define TCL_DSTRING_STATIC_SIZE 200
typedef struct Tcl_DString {
    char *string;		/* Points to beginning of string: either
				 * staticSpace below or a malloced array. */
    int length;			/* Number of non-NULL characters in the
				 * string. */
    int spaceAvl;		/* Total number of bytes available for the
				 * string and its terminating NULL char. */
    char staticSpace[TCL_DSTRING_STATIC_SIZE];
				/* Space to use in common case where string is
				 * small. */
} Tcl_DString;

#define Tcl_DStringLength(dsPtr) ((dsPtr)->length)
#define Tcl_DStringValue(dsPtr) ((dsPtr)->string)
#define Tcl_DStringTrunc Tcl_DStringSetLength

/*
 * Definitions for the maximum number of digits of precision that may be
 * specified in the "tcl_precision" variable, and the number of bytes of
 * buffer space required by Tcl_PrintDouble.
 */

#define TCL_MAX_PREC		17
#define TCL_DOUBLE_SPACE	(TCL_MAX_PREC+10)

/*
 * Definition for a number of bytes of buffer space sufficient to hold the
 * string representation of an integer in base 10 (assuming the existence of
 * 64-bit integers).
 */

#define TCL_INTEGER_SPACE	24

/*
 * Flag values passed to Tcl_ConvertElement.
 * TCL_DONT_USE_BRACES forces it not to enclose the element in braces, but to
 *	use backslash quoting instead.
 * TCL_DONT_QUOTE_HASH disables the default quoting of the '#' character. It
 *	is safe to leave the hash unquoted when the element is not the first
 *	element of a list, and this flag can be used by the caller to indicate
 *	that condition.
 */

#define TCL_DONT_USE_BRACES	1
#define TCL_DONT_QUOTE_HASH	8

/*
 * Flag that may be passed to Tcl_GetIndexFromObj to force it to disallow
 * abbreviated strings.
 */

#define TCL_EXACT	1

/*
 *----------------------------------------------------------------------------
 * Flag values passed to Tcl_RecordAndEval, Tcl_EvalObj, Tcl_EvalObjv.
 * WARNING: these bit choices must not conflict with the bit choices for
 * evalFlag bits in tclInt.h!
 *
 * Meanings:
 *	TCL_NO_EVAL:		Just record this command
 *	TCL_EVAL_GLOBAL:	Execute script in global namespace
 *	TCL_EVAL_DIRECT:	Do not compile this script
 *	TCL_EVAL_INVOKE:	Magical Tcl_EvalObjv mode for aliases/ensembles
 *				o Run in iPtr->lookupNsPtr or global namespace
 *				o Cut out of error traces
 *				o Don't reset the flags controlling ensemble
 *				  error message rewriting.
 *	TCL_CANCEL_UNWIND:	Magical Tcl_CancelEval mode that causes the
 *				stack for the script in progress to be
 *				completely unwound.
 *	TCL_EVAL_NOERR:	Do no exception reporting at all, just return
 *				as the caller will report.
 */

#define TCL_NO_EVAL		0x010000
#define TCL_EVAL_GLOBAL		0x020000
#define TCL_EVAL_DIRECT		0x040000
#define TCL_EVAL_INVOKE		0x080000
#define TCL_CANCEL_UNWIND	0x100000
#define TCL_EVAL_NOERR          0x200000

/*
 * Special freeProc values that may be passed to Tcl_SetResult (see the man
 * page for details):
 */

#define TCL_VOLATILE		((Tcl_FreeProc *) 1)
#define TCL_STATIC		((Tcl_FreeProc *) 0)
#define TCL_DYNAMIC		((Tcl_FreeProc *) 3)

/*
 * Flag values passed to variable-related functions.
 * WARNING: these bit choices must not conflict with the bit choice for
 * TCL_CANCEL_UNWIND, above.
 */

#define TCL_GLOBAL_ONLY		 1
#define TCL_NAMESPACE_ONLY	 2
#define TCL_APPEND_VALUE	 4
#define TCL_LIST_ELEMENT	 8
#define TCL_TRACE_READS		 0x10
#define TCL_TRACE_WRITES	 0x20
#define TCL_TRACE_UNSETS	 0x40
#define TCL_TRACE_DESTROYED	 0x80
#define TCL_INTERP_DESTROYED	 0x100
#define TCL_LEAVE_ERR_MSG	 0x200
#define TCL_TRACE_ARRAY		 0x800
#ifndef TCL_REMOVE_OBSOLETE_TRACES
/* Required to support old variable/vdelete/vinfo traces. */
#define TCL_TRACE_OLD_STYLE	 0x1000
#endif
/* Indicate the semantics of the result of a trace. */
#define TCL_TRACE_RESULT_DYNAMIC 0x8000
#define TCL_TRACE_RESULT_OBJECT  0x10000

/*
 * Flag values for ensemble commands.
 */

#define TCL_ENSEMBLE_PREFIX 0x02/* Flag value to say whether to allow
				 * unambiguous prefixes of commands or to
				 * require exact matches for command names. */

/*
 * Flag values passed to command-related functions.
 */

#define TCL_TRACE_RENAME	0x2000
#define TCL_TRACE_DELETE	0x4000

#define TCL_ALLOW_INLINE_COMPILATION 0x20000

/*
 * The TCL_PARSE_PART1 flag is deprecated and has no effect. The part1 is now
 * always parsed whenever the part2 is NULL. (This is to avoid a common error
 * when converting code to use the new object based APIs and forgetting to
 * give the flag)
 */

#ifndef TCL_NO_DEPRECATED
#   define TCL_PARSE_PART1	0x400
#endif

/*
 * Types for linked variables:
 */

#define TCL_LINK_INT		1
#define TCL_LINK_DOUBLE		2
#define TCL_LINK_BOOLEAN	3
#define TCL_LINK_STRING		4
#define TCL_LINK_WIDE_INT	5
#define TCL_LINK_CHAR		6
#define TCL_LINK_UCHAR		7
#define TCL_LINK_SHORT		8
#define TCL_LINK_USHORT		9
#define TCL_LINK_UINT		10
#define TCL_LINK_LONG		11
#define TCL_LINK_ULONG		12
#define TCL_LINK_FLOAT		13
#define TCL_LINK_WIDE_UINT	14
#define TCL_LINK_READ_ONLY	0x80

/*
 *----------------------------------------------------------------------------
 * Forward declarations of Tcl_HashTable and related types.
 */

typedef struct Tcl_HashKeyType Tcl_HashKeyType;
typedef struct Tcl_HashTable Tcl_HashTable;
typedef struct Tcl_HashEntry Tcl_HashEntry;

typedef unsigned (Tcl_HashKeyProc) (Tcl_HashTable *tablePtr, void *keyPtr);
typedef int (Tcl_CompareHashKeysProc) (void *keyPtr, Tcl_HashEntry *hPtr);
typedef Tcl_HashEntry * (Tcl_AllocHashEntryProc) (Tcl_HashTable *tablePtr,
	void *keyPtr);
typedef void (Tcl_FreeHashEntryProc) (Tcl_HashEntry *hPtr);

/*
 * This flag controls whether the hash table stores the hash of a key, or
 * recalculates it. There should be no reason for turning this flag off as it
 * is completely binary and source compatible unless you directly access the
 * bucketPtr member of the Tcl_HashTableEntry structure. This member has been
 * removed and the space used to store the hash value.
 */

#ifndef TCL_HASH_KEY_STORE_HASH
#   define TCL_HASH_KEY_STORE_HASH 1
#endif

/*
 * Structure definition for an entry in a hash table. No-one outside Tcl
 * should access any of these fields directly; use the macros defined below.
 */

struct Tcl_HashEntry {
    Tcl_HashEntry *nextPtr;	/* Pointer to next entry in this hash bucket,
				 * or NULL for end of chain. */
    Tcl_HashTable *tablePtr;	/* Pointer to table containing entry. */
#if TCL_HASH_KEY_STORE_HASH
    void *hash;			/* Hash value, stored as pointer to ensure
				 * that the offsets of the fields in this
				 * structure are not changed. */
#else
    Tcl_HashEntry **bucketPtr;	/* Pointer to bucket that points to first
				 * entry in this entry's chain: used for
				 * deleting the entry. */
#endif
    ClientData clientData;	/* Application stores something here with
				 * Tcl_SetHashValue. */
    union {			/* Key has one of these forms: */
	char *oneWordValue;	/* One-word value for key. */
	Tcl_Obj *objPtr;	/* Tcl_Obj * key value. */
	int words[1];		/* Multiple integer words for key. The actual
				 * size will be as large as necessary for this
				 * table's keys. */
	char string[1];		/* String for key. The actual size will be as
				 * large as needed to hold the key. */
    } key;			/* MUST BE LAST FIELD IN RECORD!! */
};

/*
 * Flags used in Tcl_HashKeyType.
 *
 * TCL_HASH_KEY_RANDOMIZE_HASH -
 *				There are some things, pointers for example
 *				which don't hash well because they do not use
 *				the lower bits. If this flag is set then the
 *				hash table will attempt to rectify this by
 *				randomising the bits and then using the upper
 *				N bits as the index into the table.
 * TCL_HASH_KEY_SYSTEM_HASH -	If this flag is set then all memory internally
 *                              allocated for the hash table that is not for an
 *                              entry will use the system heap.
 */

#define TCL_HASH_KEY_RANDOMIZE_HASH 0x1
#define TCL_HASH_KEY_SYSTEM_HASH    0x2

/*
 * Structure definition for the methods associated with a hash table key type.
 */

#define TCL_HASH_KEY_TYPE_VERSION 1
struct Tcl_HashKeyType {
    int version;		/* Version of the table. If this structure is
				 * extended in future then the version can be
				 * used to distinguish between different
				 * structures. */
    int flags;			/* Flags, see above for details. */
    Tcl_HashKeyProc *hashKeyProc;
				/* Calculates a hash value for the key. If
				 * this is NULL then the pointer itself is
				 * used as a hash value. */
    Tcl_CompareHashKeysProc *compareKeysProc;
				/* Compares two keys and returns zero if they
				 * do not match, and non-zero if they do. If
				 * this is NULL then the pointers are
				 * compared. */
    Tcl_AllocHashEntryProc *allocEntryProc;
				/* Called to allocate memory for a new entry,
				 * i.e. if the key is a string then this could
				 * allocate a single block which contains
				 * enough space for both the entry and the
				 * string. Only the key field of the allocated
				 * Tcl_HashEntry structure needs to be filled
				 * in. If something else needs to be done to
				 * the key, i.e. incrementing a reference
				 * count then that should be done by this
				 * function. If this is NULL then Tcl_Alloc is
				 * used to allocate enough space for a
				 * Tcl_HashEntry and the key pointer is
				 * assigned to key.oneWordValue. */
    Tcl_FreeHashEntryProc *freeEntryProc;
				/* Called to free memory associated with an
				 * entry. If something else needs to be done
				 * to the key, i.e. decrementing a reference
				 * count then that should be done by this
				 * function. If this is NULL then Tcl_Free is
				 * used to free the Tcl_HashEntry. */
};

/*
 * Structure definition for a hash table.  Must be in tcl.h so clients can
 * allocate space for these structures, but clients should never access any
 * fields in this structure.
 */

#define TCL_SMALL_HASH_TABLE 4
struct Tcl_HashTable {
    Tcl_HashEntry **buckets;	/* Pointer to bucket array. Each element
				 * points to first entry in bucket's hash
				 * chain, or NULL. */
    Tcl_HashEntry *staticBuckets[TCL_SMALL_HASH_TABLE];
				/* Bucket array used for small tables (to
				 * avoid mallocs and frees). */
    int numBuckets;		/* Total number of buckets allocated at
				 * **bucketPtr. */
    int numEntries;		/* Total number of entries present in
				 * table. */
    int rebuildSize;		/* Enlarge table when numEntries gets to be
				 * this large. */
    int downShift;		/* Shift count used in hashing function.
				 * Designed to use high-order bits of
				 * randomized keys. */
    int mask;			/* Mask value used in hashing function. */
    int keyType;		/* Type of keys used in this table. It's
				 * either TCL_CUSTOM_KEYS, TCL_STRING_KEYS,
				 * TCL_ONE_WORD_KEYS, or an integer giving the
				 * number of ints that is the size of the
				 * key. */
    Tcl_HashEntry *(*findProc) (Tcl_HashTable *tablePtr, const char *key);
    Tcl_HashEntry *(*createProc) (Tcl_HashTable *tablePtr, const char *key,
	    int *newPtr);
    const Tcl_HashKeyType *typePtr;
				/* Type of the keys used in the
				 * Tcl_HashTable. */
};

/*
 * Structure definition for information used to keep track of searches through
 * hash tables:
 */

typedef struct Tcl_HashSearch {
    Tcl_HashTable *tablePtr;	/* Table being searched. */
    int nextIndex;		/* Index of next bucket to be enumerated after
				 * present one. */
    Tcl_HashEntry *nextEntryPtr;/* Next entry to be enumerated in the current
				 * bucket. */
} Tcl_HashSearch;

/*
 * Acceptable key types for hash tables:
 *
 * TCL_STRING_KEYS:		The keys are strings, they are copied into the
 *				entry.
 * TCL_ONE_WORD_KEYS:		The keys are pointers, the pointer is stored
 *				in the entry.
 * TCL_CUSTOM_TYPE_KEYS:	The keys are arbitrary types which are copied
 *				into the entry.
 * TCL_CUSTOM_PTR_KEYS:		The keys are pointers to arbitrary types, the
 *				pointer is stored in the entry.
 *
 * While maintaining binary compatability the above have to be distinct values
 * as they are used to differentiate between old versions of the hash table
 * which don't have a typePtr and new ones which do. Once binary compatability
 * is discarded in favour of making more wide spread changes TCL_STRING_KEYS
 * can be the same as TCL_CUSTOM_TYPE_KEYS, and TCL_ONE_WORD_KEYS can be the
 * same as TCL_CUSTOM_PTR_KEYS because they simply determine how the key is
 * accessed from the entry and not the behaviour.
 */

#define TCL_STRING_KEYS		(0)
#define TCL_ONE_WORD_KEYS	(1)
#define TCL_CUSTOM_TYPE_KEYS	(-2)
#define TCL_CUSTOM_PTR_KEYS	(-1)

/*
 * Structure definition for information used to keep track of searches through
 * dictionaries. These fields should not be accessed by code outside
 * tclDictObj.c
 */

typedef struct {
    void *next;			/* Search position for underlying hash
				 * table. */
    int epoch;			/* Epoch marker for dictionary being searched,
				 * or -1 if search has terminated. */
    Tcl_Dict dictionaryPtr;	/* Reference to dictionary being searched. */
} Tcl_DictSearch;

/*
 *----------------------------------------------------------------------------
 * Flag values to pass to Tcl_DoOneEvent to disable searches for some kinds of
 * events:
 */

#define TCL_DONT_WAIT		(1<<1)
#define TCL_WINDOW_EVENTS	(1<<2)
#define TCL_FILE_EVENTS		(1<<3)
#define TCL_TIMER_EVENTS	(1<<4)
#define TCL_IDLE_EVENTS		(1<<5)	/* WAS 0x10 ???? */
#define TCL_ALL_EVENTS		(~TCL_DONT_WAIT)

/*
 * The following structure defines a generic event for the Tcl event system.
 * These are the things that are queued in calls to Tcl_QueueEvent and
 * serviced later by Tcl_DoOneEvent. There can be many different kinds of
 * events with different fields, corresponding to window events, timer events,
 * etc. The structure for a particular event consists of a Tcl_Event header
 * followed by additional information specific to that event.
 */

struct Tcl_Event {
    Tcl_EventProc *proc;	/* Function to call to service this event. */
    struct Tcl_Event *nextPtr;	/* Next in list of pending events, or NULL. */
};

/*
 * Positions to pass to Tcl_QueueEvent:
 */

typedef enum {
    TCL_QUEUE_TAIL, TCL_QUEUE_HEAD, TCL_QUEUE_MARK
} Tcl_QueuePosition;

/*
 * Values to pass to Tcl_SetServiceMode to specify the behavior of notifier
 * event routines.
 */

#define TCL_SERVICE_NONE 0
#define TCL_SERVICE_ALL 1

/*
 * The following structure keeps is used to hold a time value, either as an
 * absolute time (the number of seconds from the epoch) or as an elapsed time.
 * On Unix systems the epoch is Midnight Jan 1, 1970 GMT.
 */

typedef struct Tcl_Time {
    long sec;			/* Seconds. */
    long usec;			/* Microseconds. */
} Tcl_Time;

typedef void (Tcl_SetTimerProc) (CONST86 Tcl_Time *timePtr);
typedef int (Tcl_WaitForEventProc) (CONST86 Tcl_Time *timePtr);

/*
 * TIP #233 (Virtualized Time)
 */

typedef void (Tcl_GetTimeProc)   (Tcl_Time *timebuf, ClientData clientData);
typedef void (Tcl_ScaleTimeProc) (Tcl_Time *timebuf, ClientData clientData);

/*
 *----------------------------------------------------------------------------
 * Bits to pass to Tcl_CreateFileHandler and Tcl_CreateChannelHandler to
 * indicate what sorts of events are of interest:
 */

#define TCL_READABLE		(1<<1)
#define TCL_WRITABLE		(1<<2)
#define TCL_EXCEPTION		(1<<3)

/*
 * Flag values to pass to Tcl_OpenCommandChannel to indicate the disposition
 * of the stdio handles. TCL_STDIN, TCL_STDOUT, TCL_STDERR, are also used in
 * Tcl_GetStdChannel.
 */

#define TCL_STDIN		(1<<1)
#define TCL_STDOUT		(1<<2)
#define TCL_STDERR		(1<<3)
#define TCL_ENFORCE_MODE	(1<<4)

/*
 * Bits passed to Tcl_DriverClose2Proc to indicate which side of a channel
 * should be closed.
 */

#define TCL_CLOSE_READ		(1<<1)
#define TCL_CLOSE_WRITE		(1<<2)

/*
 * Value to use as the closeProc for a channel that supports the close2Proc
 * interface.
 */

#define TCL_CLOSE2PROC		((Tcl_DriverCloseProc *) 1)

/*
 * Channel version tag. This was introduced in 8.3.2/8.4.
 */

#define TCL_CHANNEL_VERSION_1	((Tcl_ChannelTypeVersion) 0x1)
#define TCL_CHANNEL_VERSION_2	((Tcl_ChannelTypeVersion) 0x2)
#define TCL_CHANNEL_VERSION_3	((Tcl_ChannelTypeVersion) 0x3)
#define TCL_CHANNEL_VERSION_4	((Tcl_ChannelTypeVersion) 0x4)
#define TCL_CHANNEL_VERSION_5	((Tcl_ChannelTypeVersion) 0x5)

/*
 * TIP #218: Channel Actions, Ids for Tcl_DriverThreadActionProc.
 */

#define TCL_CHANNEL_THREAD_INSERT (0)
#define TCL_CHANNEL_THREAD_REMOVE (1)

/*
 * Typedefs for the various operations in a channel type:
 */

typedef int	(Tcl_DriverBlockModeProc) (ClientData instanceData, int mode);
typedef int	(Tcl_DriverCloseProc) (ClientData instanceData,
			Tcl_Interp *interp);
typedef int	(Tcl_DriverClose2Proc) (ClientData instanceData,
			Tcl_Interp *interp, int flags);
typedef int	(Tcl_DriverInputProc) (ClientData instanceData, char *buf,
			int toRead, int *errorCodePtr);
typedef int	(Tcl_DriverOutputProc) (ClientData instanceData,
			CONST84 char *buf, int toWrite, int *errorCodePtr);
typedef int	(Tcl_DriverSeekProc) (ClientData instanceData, long offset,
			int mode, int *errorCodePtr);
typedef int	(Tcl_DriverSetOptionProc) (ClientData instanceData,
			Tcl_Interp *interp, const char *optionName,
			const char *value);
typedef int	(Tcl_DriverGetOptionProc) (ClientData instanceData,
			Tcl_Interp *interp, CONST84 char *optionName,
			Tcl_DString *dsPtr);
typedef void	(Tcl_DriverWatchProc) (ClientData instanceData, int mask);
typedef int	(Tcl_DriverGetHandleProc) (ClientData instanceData,
			int direction, ClientData *handlePtr);
typedef int	(Tcl_DriverFlushProc) (ClientData instanceData);
typedef int	(Tcl_DriverHandlerProc) (ClientData instanceData,
			int interestMask);
typedef Tcl_WideInt (Tcl_DriverWideSeekProc) (ClientData instanceData,
			Tcl_WideInt offset, int mode, int *errorCodePtr);
/*
 * TIP #218, Channel Thread Actions
 */
typedef void	(Tcl_DriverThreadActionProc) (ClientData instanceData,
			int action);
/*
 * TIP #208, File Truncation (etc.)
 */
typedef int	(Tcl_DriverTruncateProc) (ClientData instanceData,
			Tcl_WideInt length);

/*
 * struct Tcl_ChannelType:
 *
 * One such structure exists for each type (kind) of channel. It collects
 * together in one place all the functions that are part of the specific
 * channel type.
 *
 * It is recommend that the Tcl_Channel* functions are used to access elements
 * of this structure, instead of direct accessing.
 */

typedef struct Tcl_ChannelType {
    const char *typeName;	/* The name of the channel type in Tcl
				 * commands. This storage is owned by channel
				 * type. */
    Tcl_ChannelTypeVersion version;
				/* Version of the channel type. */
    Tcl_DriverCloseProc *closeProc;
				/* Function to call to close the channel, or
				 * TCL_CLOSE2PROC if the close2Proc should be
				 * used instead. */
    Tcl_DriverInputProc *inputProc;
				/* Function to call for input on channel. */
    Tcl_DriverOutputProc *outputProc;
				/* Function to call for output on channel. */
    Tcl_DriverSeekProc *seekProc;
				/* Function to call to seek on the channel.
				 * May be NULL. */
    Tcl_DriverSetOptionProc *setOptionProc;
				/* Set an option on a channel. */
    Tcl_DriverGetOptionProc *getOptionProc;
				/* Get an option from a channel. */
    Tcl_DriverWatchProc *watchProc;
				/* Set up the notifier to watch for events on
				 * this channel. */
    Tcl_DriverGetHandleProc *getHandleProc;
				/* Get an OS handle from the channel or NULL
				 * if not supported. */
    Tcl_DriverClose2Proc *close2Proc;
				/* Function to call to close the channel if
				 * the device supports closing the read &
				 * write sides independently. */
    Tcl_DriverBlockModeProc *blockModeProc;
				/* Set blocking mode for the raw channel. May
				 * be NULL. */
    /*
     * Only valid in TCL_CHANNEL_VERSION_2 channels or later.
     */
    Tcl_DriverFlushProc *flushProc;
				/* Function to call to flush a channel. May be
				 * NULL. */
    Tcl_DriverHandlerProc *handlerProc;
				/* Function to call to handle a channel event.
				 * This will be passed up the stacked channel
				 * chain. */
    /*
     * Only valid in TCL_CHANNEL_VERSION_3 channels or later.
     */
    Tcl_DriverWideSeekProc *wideSeekProc;
				/* Function to call to seek on the channel
				 * which can handle 64-bit offsets. May be
				 * NULL, and must be NULL if seekProc is
				 * NULL. */
    /*
     * Only valid in TCL_CHANNEL_VERSION_4 channels or later.
     * TIP #218, Channel Thread Actions.
     */
    Tcl_DriverThreadActionProc *threadActionProc;
				/* Function to call to notify the driver of
				 * thread specific activity for a channel. May
				 * be NULL. */
    /*
     * Only valid in TCL_CHANNEL_VERSION_5 channels or later.
     * TIP #208, File Truncation.
     */
    Tcl_DriverTruncateProc *truncateProc;
				/* Function to call to truncate the underlying
				 * file to a particular length. May be NULL if
				 * the channel does not support truncation. */
} Tcl_ChannelType;

/*
 * The following flags determine whether the blockModeProc above should set
 * the channel into blocking or nonblocking mode. They are passed as arguments
 * to the blockModeProc function in the above structure.
 */

#define TCL_MODE_BLOCKING	0	/* Put channel into blocking mode. */
#define TCL_MODE_NONBLOCKING	1	/* Put channel into nonblocking
					 * mode. */

/*
 *----------------------------------------------------------------------------
 * Enum for different types of file paths.
 */

typedef enum Tcl_PathType {
    TCL_PATH_ABSOLUTE,
    TCL_PATH_RELATIVE,
    TCL_PATH_VOLUME_RELATIVE
} Tcl_PathType;

/*
 * The following structure is used to pass glob type data amongst the various
 * glob routines and Tcl_FSMatchInDirectory.
 */

typedef struct Tcl_GlobTypeData {
    int type;			/* Corresponds to bcdpfls as in 'find -t'. */
    int perm;			/* Corresponds to file permissions. */
    Tcl_Obj *macType;		/* Acceptable Mac type. */
    Tcl_Obj *macCreator;	/* Acceptable Mac creator. */
} Tcl_GlobTypeData;

/*
 * Type and permission definitions for glob command.
 */

#define TCL_GLOB_TYPE_BLOCK		(1<<0)
#define TCL_GLOB_TYPE_CHAR		(1<<1)
#define TCL_GLOB_TYPE_DIR		(1<<2)
#define TCL_GLOB_TYPE_PIPE		(1<<3)
#define TCL_GLOB_TYPE_FILE		(1<<4)
#define TCL_GLOB_TYPE_LINK		(1<<5)
#define TCL_GLOB_TYPE_SOCK		(1<<6)
#define TCL_GLOB_TYPE_MOUNT		(1<<7)

#define TCL_GLOB_PERM_RONLY		(1<<0)
#define TCL_GLOB_PERM_HIDDEN		(1<<1)
#define TCL_GLOB_PERM_R			(1<<2)
#define TCL_GLOB_PERM_W			(1<<3)
#define TCL_GLOB_PERM_X			(1<<4)

/*
 * Flags for the unload callback function.
 */

#define TCL_UNLOAD_DETACH_FROM_INTERPRETER	(1<<0)
#define TCL_UNLOAD_DETACH_FROM_PROCESS		(1<<1)

/*
 * Typedefs for the various filesystem operations:
 */

typedef int (Tcl_FSStatProc) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
typedef int (Tcl_FSAccessProc) (Tcl_Obj *pathPtr, int mode);
typedef Tcl_Channel (Tcl_FSOpenFileChannelProc) (Tcl_Interp *interp,
	Tcl_Obj *pathPtr, int mode, int permissions);
typedef int (Tcl_FSMatchInDirectoryProc) (Tcl_Interp *interp, Tcl_Obj *result,
	Tcl_Obj *pathPtr, const char *pattern, Tcl_GlobTypeData *types);
typedef Tcl_Obj * (Tcl_FSGetCwdProc) (Tcl_Interp *interp);
typedef int (Tcl_FSChdirProc) (Tcl_Obj *pathPtr);
typedef int (Tcl_FSLstatProc) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
typedef int (Tcl_FSCreateDirectoryProc) (Tcl_Obj *pathPtr);
typedef int (Tcl_FSDeleteFileProc) (Tcl_Obj *pathPtr);
typedef int (Tcl_FSCopyDirectoryProc) (Tcl_Obj *srcPathPtr,
	Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr);
typedef int (Tcl_FSCopyFileProc) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr);
typedef int (Tcl_FSRemoveDirectoryProc) (Tcl_Obj *pathPtr, int recursive,
	Tcl_Obj **errorPtr);
typedef int (Tcl_FSRenameFileProc) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr);
typedef void (Tcl_FSUnloadFileProc) (Tcl_LoadHandle loadHandle);
typedef Tcl_Obj * (Tcl_FSListVolumesProc) (void);
/* We have to declare the utime structure here. */
struct utimbuf;
typedef int (Tcl_FSUtimeProc) (Tcl_Obj *pathPtr, struct utimbuf *tval);
typedef int (Tcl_FSNormalizePathProc) (Tcl_Interp *interp, Tcl_Obj *pathPtr,
	int nextCheckpoint);
typedef int (Tcl_FSFileAttrsGetProc) (Tcl_Interp *interp, int index,
	Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef);
typedef const char *CONST86 * (Tcl_FSFileAttrStringsProc) (Tcl_Obj *pathPtr,
	Tcl_Obj **objPtrRef);
typedef int (Tcl_FSFileAttrsSetProc) (Tcl_Interp *interp, int index,
	Tcl_Obj *pathPtr, Tcl_Obj *objPtr);
typedef Tcl_Obj * (Tcl_FSLinkProc) (Tcl_Obj *pathPtr, Tcl_Obj *toPtr,
	int linkType);
typedef int (Tcl_FSLoadFileProc) (Tcl_Interp *interp, Tcl_Obj *pathPtr,
	Tcl_LoadHandle *handlePtr, Tcl_FSUnloadFileProc **unloadProcPtr);
typedef int (Tcl_FSPathInFilesystemProc) (Tcl_Obj *pathPtr,
	ClientData *clientDataPtr);
typedef Tcl_Obj * (Tcl_FSFilesystemPathTypeProc) (Tcl_Obj *pathPtr);
typedef Tcl_Obj * (Tcl_FSFilesystemSeparatorProc) (Tcl_Obj *pathPtr);
typedef void (Tcl_FSFreeInternalRepProc) (ClientData clientData);
typedef ClientData (Tcl_FSDupInternalRepProc) (ClientData clientData);
typedef Tcl_Obj * (Tcl_FSInternalToNormalizedProc) (ClientData clientData);
typedef ClientData (Tcl_FSCreateInternalRepProc) (Tcl_Obj *pathPtr);

typedef struct Tcl_FSVersion_ *Tcl_FSVersion;

/*
 *----------------------------------------------------------------------------
 * Data structures related to hooking into the filesystem
 */

/*
 * Filesystem version tag.  This was introduced in 8.4.
 */

#define TCL_FILESYSTEM_VERSION_1	((Tcl_FSVersion) 0x1)

/*
 * struct Tcl_Filesystem:
 *
 * One such structure exists for each type (kind) of filesystem. It collects
 * together in one place all the functions that are part of the specific
 * filesystem. Tcl always accesses the filesystem through one of these
 * structures.
 *
 * Not all entries need be non-NULL; any which are NULL are simply ignored.
 * However, a complete filesystem should provide all of these functions. The
 * explanations in the structure show the importance of each function.
 */

typedef struct Tcl_Filesystem {
    const char *typeName;	/* The name of the filesystem. */
    int structureLength;	/* Length of this structure, so future binary
				 * compatibility can be assured. */
    Tcl_FSVersion version;	/* Version of the filesystem type. */
    Tcl_FSPathInFilesystemProc *pathInFilesystemProc;
				/* Function to check whether a path is in this
				 * filesystem. This is the most important
				 * filesystem function. */
    Tcl_FSDupInternalRepProc *dupInternalRepProc;
				/* Function to duplicate internal fs rep. May
				 * be NULL (but then fs is less efficient). */
    Tcl_FSFreeInternalRepProc *freeInternalRepProc;
				/* Function to free internal fs rep. Must be
				 * implemented if internal representations
				 * need freeing, otherwise it can be NULL. */
    Tcl_FSInternalToNormalizedProc *internalToNormalizedProc;
				/* Function to convert internal representation
				 * to a normalized path. Only required if the
				 * fs creates pure path objects with no
				 * string/path representation. */
    Tcl_FSCreateInternalRepProc *createInternalRepProc;
				/* Function to create a filesystem-specific
				 * internal representation. May be NULL if
				 * paths have no internal representation, or
				 * if the Tcl_FSPathInFilesystemProc for this
				 * filesystem always immediately creates an
				 * internal representation for paths it
				 * accepts. */
    Tcl_FSNormalizePathProc *normalizePathProc;
				/* Function to normalize a path.  Should be
				 * implemented for all filesystems which can
				 * have multiple string representations for
				 * the same path object. */
    Tcl_FSFilesystemPathTypeProc *filesystemPathTypeProc;
				/* Function to determine the type of a path in
				 * this filesystem. May be NULL. */
    Tcl_FSFilesystemSeparatorProc *filesystemSeparatorProc;
				/* Function to return the separator
				 * character(s) for this filesystem. Must be
				 * implemented. */
    Tcl_FSStatProc *statProc;	/* Function to process a 'Tcl_FSStat()' call.
				 * Must be implemented for any reasonable
				 * filesystem. */
    Tcl_FSAccessProc *accessProc;
				/* Function to process a 'Tcl_FSAccess()'
				 * call. Must be implemented for any
				 * reasonable filesystem. */
    Tcl_FSOpenFileChannelProc *openFileChannelProc;
				/* Function to process a
				 * 'Tcl_FSOpenFileChannel()' call. Must be
				 * implemented for any reasonable
				 * filesystem. */
    Tcl_FSMatchInDirectoryProc *matchInDirectoryProc;
				/* Function to process a
				 * 'Tcl_FSMatchInDirectory()'.  If not
				 * implemented, then glob and recursive copy
				 * functionality will be lacking in the
				 * filesystem. */
    Tcl_FSUtimeProc *utimeProc;	/* Function to process a 'Tcl_FSUtime()' call.
				 * Required to allow setting (not reading) of
				 * times with 'file mtime', 'file atime' and
				 * the open-r/open-w/fcopy implementation of
				 * 'file copy'. */
    Tcl_FSLinkProc *linkProc;	/* Function to process a 'Tcl_FSLink()' call.
				 * Should be implemented only if the
				 * filesystem supports links (reading or
				 * creating). */
    Tcl_FSListVolumesProc *listVolumesProc;
				/* Function to list any filesystem volumes
				 * added by this filesystem. Should be
				 * implemented only if the filesystem adds
				 * volumes at the head of the filesystem. */
    Tcl_FSFileAttrStringsProc *fileAttrStringsProc;
				/* Function to list all attributes strings
				 * which are valid for this filesystem. If not
				 * implemented the filesystem will not support
				 * the 'file attributes' command. This allows
				 * arbitrary additional information to be
				 * attached to files in the filesystem. */
    Tcl_FSFileAttrsGetProc *fileAttrsGetProc;
				/* Function to process a
				 * 'Tcl_FSFileAttrsGet()' call, used by 'file
				 * attributes'. */
    Tcl_FSFileAttrsSetProc *fileAttrsSetProc;
				/* Function to process a
				 * 'Tcl_FSFileAttrsSet()' call, used by 'file
				 * attributes'.  */
    Tcl_FSCreateDirectoryProc *createDirectoryProc;
				/* Function to process a
				 * 'Tcl_FSCreateDirectory()' call. Should be
				 * implemented unless the FS is read-only. */
    Tcl_FSRemoveDirectoryProc *removeDirectoryProc;
				/* Function to process a
				 * 'Tcl_FSRemoveDirectory()' call. Should be
				 * implemented unless the FS is read-only. */
    Tcl_FSDeleteFileProc *deleteFileProc;
				/* Function to process a 'Tcl_FSDeleteFile()'
				 * call. Should be implemented unless the FS
				 * is read-only. */
    Tcl_FSCopyFileProc *copyFileProc;
				/* Function to process a 'Tcl_FSCopyFile()'
				 * call. If not implemented Tcl will fall back
				 * on open-r, open-w and fcopy as a copying
				 * mechanism, for copying actions initiated in
				 * Tcl (not C). */
    Tcl_FSRenameFileProc *renameFileProc;
				/* Function to process a 'Tcl_FSRenameFile()'
				 * call. If not implemented, Tcl will fall
				 * back on a copy and delete mechanism, for
				 * rename actions initiated in Tcl (not C). */
    Tcl_FSCopyDirectoryProc *copyDirectoryProc;
				/* Function to process a
				 * 'Tcl_FSCopyDirectory()' call. If not
				 * implemented, Tcl will fall back on a
				 * recursive create-dir, file copy mechanism,
				 * for copying actions initiated in Tcl (not
				 * C). */
    Tcl_FSLstatProc *lstatProc;	/* Function to process a 'Tcl_FSLstat()' call.
				 * If not implemented, Tcl will attempt to use
				 * the 'statProc' defined above instead. */
    Tcl_FSLoadFileProc *loadFileProc;
				/* Function to process a 'Tcl_FSLoadFile()'
				 * call. If not implemented, Tcl will fall
				 * back on a copy to native-temp followed by a
				 * Tcl_FSLoadFile on that temporary copy. */
    Tcl_FSGetCwdProc *getCwdProc;
				/* Function to process a 'Tcl_FSGetCwd()'
				 * call. Most filesystems need not implement
				 * this. It will usually only be called once,
				 * if 'getcwd' is called before 'chdir'. May
				 * be NULL. */
    Tcl_FSChdirProc *chdirProc;	/* Function to process a 'Tcl_FSChdir()' call.
				 * If filesystems do not implement this, it
				 * will be emulated by a series of directory
				 * access checks. Otherwise, virtual
				 * filesystems which do implement it need only
				 * respond with a positive return result if
				 * the dirName is a valid directory in their
				 * filesystem. They need not remember the
				 * result, since that will be automatically
				 * remembered for use by GetCwd. Real
				 * filesystems should carry out the correct
				 * action (i.e. call the correct system
				 * 'chdir' api). If not implemented, then 'cd'
				 * and 'pwd' will fail inside the
				 * filesystem. */
} Tcl_Filesystem;

/*
 * The following definitions are used as values for the 'linkAction' flag to
 * Tcl_FSLink, or the linkProc of any filesystem. Any combination of flags can
 * be given. For link creation, the linkProc should create a link which
 * matches any of the types given.
 *
 * TCL_CREATE_SYMBOLIC_LINK -	Create a symbolic or soft link.
 * TCL_CREATE_HARD_LINK -	Create a hard link.
 */

#define TCL_CREATE_SYMBOLIC_LINK	0x01
#define TCL_CREATE_HARD_LINK		0x02

/*
 *----------------------------------------------------------------------------
 * The following structure represents the Notifier functions that you can
 * override with the Tcl_SetNotifier call.
 */

typedef struct Tcl_NotifierProcs {
    Tcl_SetTimerProc *setTimerProc;
    Tcl_WaitForEventProc *waitForEventProc;
    Tcl_CreateFileHandlerProc *createFileHandlerProc;
    Tcl_DeleteFileHandlerProc *deleteFileHandlerProc;
    Tcl_InitNotifierProc *initNotifierProc;
    Tcl_FinalizeNotifierProc *finalizeNotifierProc;
    Tcl_AlertNotifierProc *alertNotifierProc;
    Tcl_ServiceModeHookProc *serviceModeHookProc;
} Tcl_NotifierProcs;

/*
 *----------------------------------------------------------------------------
 * The following data structures and declarations are for the new Tcl parser.
 *
 * For each word of a command, and for each piece of a word such as a variable
 * reference, one of the following structures is created to describe the
 * token.
 */

typedef struct Tcl_Token {
    int type;			/* Type of token, such as TCL_TOKEN_WORD; see
				 * below for valid types. */
    const char *start;		/* First character in token. */
    int size;			/* Number of bytes in token. */
    int numComponents;		/* If this token is composed of other tokens,
				 * this field tells how many of them there are
				 * (including components of components, etc.).
				 * The component tokens immediately follow
				 * this one. */
} Tcl_Token;

/*
 * Type values defined for Tcl_Token structures. These values are defined as
 * mask bits so that it's easy to check for collections of types.
 *
 * TCL_TOKEN_WORD -		The token describes one word of a command,
 *				from the first non-blank character of the word
 *				(which may be " or {) up to but not including
 *				the space, semicolon, or bracket that
 *				terminates the word. NumComponents counts the
 *				total number of sub-tokens that make up the
 *				word. This includes, for example, sub-tokens
 *				of TCL_TOKEN_VARIABLE tokens.
 * TCL_TOKEN_SIMPLE_WORD -	This token is just like TCL_TOKEN_WORD except
 *				that the word is guaranteed to consist of a
 *				single TCL_TOKEN_TEXT sub-token.
 * TCL_TOKEN_TEXT -		The token describes a range of literal text
 *				that is part of a word. NumComponents is
 *				always 0.
 * TCL_TOKEN_BS -		The token describes a backslash sequence that
 *				must be collapsed. NumComponents is always 0.
 * TCL_TOKEN_COMMAND -		The token describes a command whose result
 *				must be substituted into the word. The token
 *				includes the enclosing brackets. NumComponents
 *				is always 0.
 * TCL_TOKEN_VARIABLE -		The token describes a variable substitution,
 *				including the dollar sign, variable name, and
 *				array index (if there is one) up through the
 *				right parentheses. NumComponents tells how
 *				many additional tokens follow to represent the
 *				variable name. The first token will be a
 *				TCL_TOKEN_TEXT token that describes the
 *				variable name. If the variable is an array
 *				reference then there will be one or more
 *				additional tokens, of type TCL_TOKEN_TEXT,
 *				TCL_TOKEN_BS, TCL_TOKEN_COMMAND, and
 *				TCL_TOKEN_VARIABLE, that describe the array
 *				index; numComponents counts the total number
 *				of nested tokens that make up the variable
 *				reference, including sub-tokens of
 *				TCL_TOKEN_VARIABLE tokens.
 * TCL_TOKEN_SUB_EXPR -		The token describes one subexpression of an
 *				expression, from the first non-blank character
 *				of the subexpression up to but not including
 *				the space, brace, or bracket that terminates
 *				the subexpression. NumComponents counts the
 *				total number of following subtokens that make
 *				up the subexpression; this includes all
 *				subtokens for any nested TCL_TOKEN_SUB_EXPR
 *				tokens. For example, a numeric value used as a
 *				primitive operand is described by a
 *				TCL_TOKEN_SUB_EXPR token followed by a
 *				TCL_TOKEN_TEXT token. A binary subexpression
 *				is described by a TCL_TOKEN_SUB_EXPR token
 *				followed by the TCL_TOKEN_OPERATOR token for
 *				the operator, then TCL_TOKEN_SUB_EXPR tokens
 *				for the left then the right operands.
 * TCL_TOKEN_OPERATOR -		The token describes one expression operator.
 *				An operator might be the name of a math
 *				function such as "abs". A TCL_TOKEN_OPERATOR
 *				token is always preceeded by one
 *				TCL_TOKEN_SUB_EXPR token for the operator's
 *				subexpression, and is followed by zero or more
 *				TCL_TOKEN_SUB_EXPR tokens for the operator's
 *				operands. NumComponents is always 0.
 * TCL_TOKEN_EXPAND_WORD -	This token is just like TCL_TOKEN_WORD except
 *				that it marks a word that began with the
 *				literal character prefix "{*}". This word is
 *				marked to be expanded - that is, broken into
 *				words after substitution is complete.
 */

#define TCL_TOKEN_WORD		1
#define TCL_TOKEN_SIMPLE_WORD	2
#define TCL_TOKEN_TEXT		4
#define TCL_TOKEN_BS		8
#define TCL_TOKEN_COMMAND	16
#define TCL_TOKEN_VARIABLE	32
#define TCL_TOKEN_SUB_EXPR	64
#define TCL_TOKEN_OPERATOR	128
#define TCL_TOKEN_EXPAND_WORD	256

/*
 * Parsing error types. On any parsing error, one of these values will be
 * stored in the error field of the Tcl_Parse structure defined below.
 */

#define TCL_PARSE_SUCCESS		0
#define TCL_PARSE_QUOTE_EXTRA		1
#define TCL_PARSE_BRACE_EXTRA		2
#define TCL_PARSE_MISSING_BRACE		3
#define TCL_PARSE_MISSING_BRACKET	4
#define TCL_PARSE_MISSING_PAREN		5
#define TCL_PARSE_MISSING_QUOTE		6
#define TCL_PARSE_MISSING_VAR_BRACE	7
#define TCL_PARSE_SYNTAX		8
#define TCL_PARSE_BAD_NUMBER		9

/*
 * A structure of the following type is filled in by Tcl_ParseCommand. It
 * describes a single command parsed from an input string.
 */

#define NUM_STATIC_TOKENS 20

typedef struct Tcl_Parse {
    const char *commentStart;	/* Pointer to # that begins the first of one
				 * or more comments preceding the command. */
    int commentSize;		/* Number of bytes in comments (up through
				 * newline character that terminates the last
				 * comment). If there were no comments, this
				 * field is 0. */
    const char *commandStart;	/* First character in first word of
				 * command. */
    int commandSize;		/* Number of bytes in command, including first
				 * character of first word, up through the
				 * terminating newline, close bracket, or
				 * semicolon. */
    int numWords;		/* Total number of words in command. May be
				 * 0. */
    Tcl_Token *tokenPtr;	/* Pointer to first token representing the
				 * words of the command. Initially points to
				 * staticTokens, but may change to point to
				 * malloc-ed space if command exceeds space in
				 * staticTokens. */
    int numTokens;		/* Total number of tokens in command. */
    int tokensAvailable;	/* Total number of tokens available at
				 * *tokenPtr. */
    int errorType;		/* One of the parsing error types defined
				 * above. */

    /*
     * The fields below are intended only for the private use of the parser.
     * They should not be used by functions that invoke Tcl_ParseCommand.
     */

    const char *string;		/* The original command string passed to
				 * Tcl_ParseCommand. */
    const char *end;		/* Points to the character just after the last
				 * one in the command string. */
    Tcl_Interp *interp;		/* Interpreter to use for error reporting, or
				 * NULL. */
    const char *term;		/* Points to character in string that
				 * terminated most recent token. Filled in by
				 * ParseTokens. If an error occurs, points to
				 * beginning of region where the error
				 * occurred (e.g. the open brace if the close
				 * brace is missing). */
    int incomplete;		/* This field is set to 1 by Tcl_ParseCommand
				 * if the command appears to be incomplete.
				 * This information is used by
				 * Tcl_CommandComplete. */
    Tcl_Token staticTokens[NUM_STATIC_TOKENS];
				/* Initial space for tokens for command. This
				 * space should be large enough to accommodate
				 * most commands; dynamic space is allocated
				 * for very large commands that don't fit
				 * here. */
} Tcl_Parse;

/*
 *----------------------------------------------------------------------------
 * The following structure represents a user-defined encoding. It collects
 * together all the functions that are used by the specific encoding.
 */

typedef struct Tcl_EncodingType {
    const char *encodingName;	/* The name of the encoding, e.g. "euc-jp".
				 * This name is the unique key for this
				 * encoding type. */
    Tcl_EncodingConvertProc *toUtfProc;
				/* Function to convert from external encoding
				 * into UTF-8. */
    Tcl_EncodingConvertProc *fromUtfProc;
				/* Function to convert from UTF-8 into
				 * external encoding. */
    Tcl_EncodingFreeProc *freeProc;
				/* If non-NULL, function to call when this
				 * encoding is deleted. */
    ClientData clientData;	/* Arbitrary value associated with encoding
				 * type. Passed to conversion functions. */
    int nullSize;		/* Number of zero bytes that signify
				 * end-of-string in this encoding. This number
				 * is used to determine the source string
				 * length when the srcLen argument is
				 * negative. Must be 1 or 2. */
} Tcl_EncodingType;

/*
 * The following definitions are used as values for the conversion control
 * flags argument when converting text from one character set to another:
 *
 * TCL_ENCODING_START -		Signifies that the source buffer is the first
 *				block in a (potentially multi-block) input
 *				stream. Tells the conversion function to reset
 *				to an initial state and perform any
 *				initialization that needs to occur before the
 *				first byte is converted. If the source buffer
 *				contains the entire input stream to be
 *				converted, this flag should be set.
 * TCL_ENCODING_END -		Signifies that the source buffer is the last
 *				block in a (potentially multi-block) input
 *				stream. Tells the conversion routine to
 *				perform any finalization that needs to occur
 *				after the last byte is converted and then to
 *				reset to an initial state. If the source
 *				buffer contains the entire input stream to be
 *				converted, this flag should be set.
 * TCL_ENCODING_STOPONERROR -	If set, then the converter will return
 *				immediately upon encountering an invalid byte
 *				sequence or a source character that has no
 *				mapping in the target encoding. If clear, then
 *				the converter will skip the problem,
 *				substituting one or more "close" characters in
 *				the destination buffer and then continue to
 *				convert the source.
 */

#define TCL_ENCODING_START		0x01
#define TCL_ENCODING_END		0x02
#define TCL_ENCODING_STOPONERROR	0x04

/*
 * The following definitions are the error codes returned by the conversion
 * routines:
 *
 * TCL_OK -			All characters were converted.
 * TCL_CONVERT_NOSPACE -	The output buffer would not have been large
 *				enough for all of the converted data; as many
 *				characters as could fit were converted though.
 * TCL_CONVERT_MULTIBYTE -	The last few bytes in the source string were
 *				the beginning of a multibyte sequence, but
 *				more bytes were needed to complete this
 *				sequence. A subsequent call to the conversion
 *				routine should pass the beginning of this
 *				unconverted sequence plus additional bytes
 *				from the source stream to properly convert the
 *				formerly split-up multibyte sequence.
 * TCL_CONVERT_SYNTAX -		The source stream contained an invalid
 *				character sequence. This may occur if the
 *				input stream has been damaged or if the input
 *				encoding method was misidentified. This error
 *				is reported only if TCL_ENCODING_STOPONERROR
 *				was specified.
 * TCL_CONVERT_UNKNOWN -	The source string contained a character that
 *				could not be represented in the target
 *				encoding. This error is reported only if
 *				TCL_ENCODING_STOPONERROR was specified.
 */

#define TCL_CONVERT_MULTIBYTE	(-1)
#define TCL_CONVERT_SYNTAX	(-2)
#define TCL_CONVERT_UNKNOWN	(-3)
#define TCL_CONVERT_NOSPACE	(-4)

/*
 * The maximum number of bytes that are necessary to represent a single
 * Unicode character in UTF-8. The valid values should be 3, 4 or 6
 * (or perhaps 1 if we want to support a non-unicode enabled core). If 3 or
 * 4, then Tcl_UniChar must be 2-bytes in size (UCS-2) (the default). If 6,
 * then Tcl_UniChar must be 4-bytes in size (UCS-4). At this time UCS-2 mode
 * is the default and recommended mode. UCS-4 is experimental and not
 * recommended. It works for the core, but most extensions expect UCS-2.
 */

#ifndef TCL_UTF_MAX
#define TCL_UTF_MAX		3
#endif

/*
 * This represents a Unicode character. Any changes to this should also be
 * reflected in regcustom.h.
 */

#if TCL_UTF_MAX > 4
    /*
     * unsigned int isn't 100% accurate as it should be a strict 4-byte value
     * (perhaps wchar_t). 64-bit systems may have troubles. The size of this
     * value must be reflected correctly in regcustom.h and
     * in tclEncoding.c.
     * XXX: Tcl is currently UCS-2 and planning UTF-16 for the Unicode
     * XXX: string rep that Tcl_UniChar represents.  Changing the size
     * XXX: of Tcl_UniChar is /not/ supported.
     */
typedef unsigned int Tcl_UniChar;
#else
typedef unsigned short Tcl_UniChar;
#endif

/*
 *----------------------------------------------------------------------------
 * TIP #59: The following structure is used in calls 'Tcl_RegisterConfig' to
 * provide the system with the embedded configuration data.
 */

typedef struct Tcl_Config {
    const char *key;		/* Configuration key to register. ASCII
				 * encoded, thus UTF-8. */
    const char *value;		/* The value associated with the key. System
				 * encoding. */
} Tcl_Config;

/*
 *----------------------------------------------------------------------------
 * Flags for TIP#143 limits, detailing which limits are active in an
 * interpreter. Used for Tcl_{Add,Remove}LimitHandler type argument.
 */

#define TCL_LIMIT_COMMANDS	0x01
#define TCL_LIMIT_TIME		0x02

/*
 * Structure containing information about a limit handler to be called when a
 * command- or time-limit is exceeded by an interpreter.
 */

typedef void (Tcl_LimitHandlerProc) (ClientData clientData, Tcl_Interp *interp);
typedef void (Tcl_LimitHandlerDeleteProc) (ClientData clientData);

/*
 *----------------------------------------------------------------------------
 * Override definitions for libtommath.
 */

typedef struct mp_int mp_int;
#define MP_INT_DECLARED
typedef unsigned int mp_digit;
#define MP_DIGIT_DECLARED

/*
 *----------------------------------------------------------------------------
 * Definitions needed for Tcl_ParseArgvObj routines.
 * Based on tkArgv.c.
 * Modifications from the original are copyright (c) Sam Bromley 2006
 */

typedef struct {
    int type;			/* Indicates the option type; see below. */
    const char *keyStr;		/* The key string that flags the option in the
				 * argv array. */
    void *srcPtr;		/* Value to be used in setting dst; usage
				 * depends on type.*/
    void *dstPtr;		/* Address of value to be modified; usage
				 * depends on type.*/
    const char *helpStr;	/* Documentation message describing this
				 * option. */
    ClientData clientData;	/* Word to pass to function callbacks. */
} Tcl_ArgvInfo;

/*
 * Legal values for the type field of a Tcl_ArgInfo: see the user
 * documentation for details.
 */

#define TCL_ARGV_CONSTANT	15
#define TCL_ARGV_INT		16
#define TCL_ARGV_STRING		17
#define TCL_ARGV_REST		18
#define TCL_ARGV_FLOAT		19
#define TCL_ARGV_FUNC		20
#define TCL_ARGV_GENFUNC	21
#define TCL_ARGV_HELP		22
#define TCL_ARGV_END		23

/*
 * Types of callback functions for the TCL_ARGV_FUNC and TCL_ARGV_GENFUNC
 * argument types:
 */

typedef int (Tcl_ArgvFuncProc)(ClientData clientData, Tcl_Obj *objPtr,
	void *dstPtr);
typedef int (Tcl_ArgvGenFuncProc)(ClientData clientData, Tcl_Interp *interp,
	int objc, Tcl_Obj *const *objv, void *dstPtr);

/*
 * Shorthand for commonly used argTable entries.
 */

#define TCL_ARGV_AUTO_HELP \
    {TCL_ARGV_HELP,	"-help",	NULL,	NULL, \
	    "Print summary of command-line options and abort", NULL}
#define TCL_ARGV_AUTO_REST \
    {TCL_ARGV_REST,	"--",		NULL,	NULL, \
	    "Marks the end of the options", NULL}
#define TCL_ARGV_TABLE_END \
    {TCL_ARGV_END, NULL, NULL, NULL, NULL, NULL}

/*
 *----------------------------------------------------------------------------
 * Definitions needed for Tcl_Zlib routines. [TIP #234]
 *
 * Constants for the format flags describing what sort of data format is
 * desired/expected for the Tcl_ZlibDeflate, Tcl_ZlibInflate and
 * Tcl_ZlibStreamInit functions.
 */

#define TCL_ZLIB_FORMAT_RAW	1
#define TCL_ZLIB_FORMAT_ZLIB	2
#define TCL_ZLIB_FORMAT_GZIP	4
#define TCL_ZLIB_FORMAT_AUTO	8

/*
 * Constants that describe whether the stream is to operate in compressing or
 * decompressing mode.
 */

#define TCL_ZLIB_STREAM_DEFLATE	16
#define TCL_ZLIB_STREAM_INFLATE	32

/*
 * Constants giving compression levels. Use of TCL_ZLIB_COMPRESS_DEFAULT is
 * recommended.
 */

#define TCL_ZLIB_COMPRESS_NONE	0
#define TCL_ZLIB_COMPRESS_FAST	1
#define TCL_ZLIB_COMPRESS_BEST	9
#define TCL_ZLIB_COMPRESS_DEFAULT (-1)

/*
 * Constants for types of flushing, used with Tcl_ZlibFlush.
 */

#define TCL_ZLIB_NO_FLUSH	0
#define TCL_ZLIB_FLUSH		2
#define TCL_ZLIB_FULLFLUSH	3
#define TCL_ZLIB_FINALIZE	4

/*
 *----------------------------------------------------------------------------
 * Definitions needed for the Tcl_LoadFile function. [TIP #416]
 */

#define TCL_LOAD_GLOBAL 1
#define TCL_LOAD_LAZY 2

/*
 *----------------------------------------------------------------------------
 * Single public declaration for NRE.
 */

typedef int (Tcl_NRPostProc) (ClientData data[], Tcl_Interp *interp,
				int result);

/*
 *----------------------------------------------------------------------------
 * The following constant is used to test for older versions of Tcl in the
 * stubs tables.
 *
 * Jan Nijtman's plus patch uses 0xFCA1BACF, so we need to pick a different
 * value since the stubs tables don't match.
 */

#define TCL_STUB_MAGIC		((int) 0xFCA3BACF)

/*
 * The following function is required to be defined in all stubs aware
 * extensions. The function is actually implemented in the stub library, not
 * the main Tcl library, although there is a trivial implementation in the
 * main library in case an extension is statically linked into an application.
 */

const char *		Tcl_InitStubs(Tcl_Interp *interp, const char *version,
			    int exact);
const char *		TclTomMathInitializeStubs(Tcl_Interp *interp,
			    const char *version, int epoch, int revision);

/*
 * When not using stubs, make it a macro.
 */

#ifndef USE_TCL_STUBS
#define Tcl_InitStubs(interp, version, exact) \
    Tcl_PkgInitStubsCheck(interp, version, exact)
#endif

/*
 * TODO - tommath stubs export goes here!
 */

/*
 * Public functions that are not accessible via the stubs table.
 * Tcl_GetMemoryInfo is needed for AOLserver. [Bug 1868171]
 */

#define Tcl_Main(argc, argv, proc) Tcl_MainEx(argc, argv, proc, \
	    (Tcl_FindExecutable(argv[0]), (Tcl_CreateInterp)()))
EXTERN void		Tcl_MainEx(int argc, char **argv,
			    Tcl_AppInitProc *appInitProc, Tcl_Interp *interp);
EXTERN const char *	Tcl_PkgInitStubsCheck(Tcl_Interp *interp,
			    const char *version, int exact);
#if defined(TCL_THREADS) && defined(USE_THREAD_ALLOC)
EXTERN void		Tcl_GetMemoryInfo(Tcl_DString *dsPtr);
#endif

/*
 *----------------------------------------------------------------------------
 * Include the public function declarations that are accessible via the stubs
 * table.
 */

#include "tclDecls.h"

/*
 * Include platform specific public function declarations that are accessible
 * via the stubs table.
 */

#include "tclPlatDecls.h"

/*
 *----------------------------------------------------------------------------
 * The following declarations either map ckalloc and ckfree to malloc and
 * free, or they map them to functions with all sorts of debugging hooks
 * defined in tclCkalloc.c.
 */

#ifdef TCL_MEM_DEBUG

#   define ckalloc(x) \
    ((VOID *) Tcl_DbCkalloc((unsigned)(x), __FILE__, __LINE__))
#   define ckfree(x) \
    Tcl_DbCkfree((char *)(x), __FILE__, __LINE__)
#   define ckrealloc(x,y) \
    ((VOID *) Tcl_DbCkrealloc((char *)(x), (unsigned)(y), __FILE__, __LINE__))
#   define attemptckalloc(x) \
    ((VOID *) Tcl_AttemptDbCkalloc((unsigned)(x), __FILE__, __LINE__))
#   define attemptckrealloc(x,y) \
    ((VOID *) Tcl_AttemptDbCkrealloc((char *)(x), (unsigned)(y), __FILE__, __LINE__))

#else /* !TCL_MEM_DEBUG */

/*
 * If we are not using the debugging allocator, we should call the Tcl_Alloc,
 * et al. routines in order to guarantee that every module is using the same
 * memory allocator both inside and outside of the Tcl library.
 */

#   define ckalloc(x) \
    ((VOID *) Tcl_Alloc((unsigned)(x)))
#   define ckfree(x) \
    Tcl_Free((char *)(x))
#   define ckrealloc(x,y) \
    ((VOID *) Tcl_Realloc((char *)(x), (unsigned)(y)))
#   define attemptckalloc(x) \
    ((VOID *) Tcl_AttemptAlloc((unsigned)(x)))
#   define attemptckrealloc(x,y) \
    ((VOID *) Tcl_AttemptRealloc((char *)(x), (unsigned)(y)))
#   undef  Tcl_InitMemory
#   define Tcl_InitMemory(x)
#   undef  Tcl_DumpActiveMemory
#   define Tcl_DumpActiveMemory(x)
#   undef  Tcl_ValidateAllMemory
#   define Tcl_ValidateAllMemory(x,y)

#endif /* !TCL_MEM_DEBUG */

#ifdef TCL_MEM_DEBUG
#   define Tcl_IncrRefCount(objPtr) \
	Tcl_DbIncrRefCount(objPtr, __FILE__, __LINE__)
#   define Tcl_DecrRefCount(objPtr) \
	Tcl_DbDecrRefCount(objPtr, __FILE__, __LINE__)
#   define Tcl_IsShared(objPtr) \
	Tcl_DbIsShared(objPtr, __FILE__, __LINE__)
#else
#   define Tcl_IncrRefCount(objPtr) \
	++(objPtr)->refCount
    /*
     * Use do/while0 idiom for optimum correctness without compiler warnings.
     * http://c2.com/cgi/wiki?TrivialDoWhileLoop
     */
#   define Tcl_DecrRefCount(objPtr) \
	do { \
	    Tcl_Obj *_objPtr = (objPtr); \
	    if (--(_objPtr)->refCount <= 0) { \
		TclFreeObj(_objPtr); \
	    } \
	} while(0)
#   define Tcl_IsShared(objPtr) \
	((objPtr)->refCount > 1)
#endif

/*
 * Macros and definitions that help to debug the use of Tcl objects. When
 * TCL_MEM_DEBUG is defined, the Tcl_New declarations are overridden to call
 * debugging versions of the object creation functions.
 */

#ifdef TCL_MEM_DEBUG
#  undef  Tcl_NewBignumObj
#  define Tcl_NewBignumObj(val) \
     Tcl_DbNewBignumObj(val, __FILE__, __LINE__)
#  undef  Tcl_NewBooleanObj
#  define Tcl_NewBooleanObj(val) \
     Tcl_DbNewBooleanObj(val, __FILE__, __LINE__)
#  undef  Tcl_NewByteArrayObj
#  define Tcl_NewByteArrayObj(bytes, len) \
     Tcl_DbNewByteArrayObj(bytes, len, __FILE__, __LINE__)
#  undef  Tcl_NewDoubleObj
#  define Tcl_NewDoubleObj(val) \
     Tcl_DbNewDoubleObj(val, __FILE__, __LINE__)
#  undef  Tcl_NewIntObj
#  define Tcl_NewIntObj(val) \
     Tcl_DbNewLongObj(val, __FILE__, __LINE__)
#  undef  Tcl_NewListObj
#  define Tcl_NewListObj(objc, objv) \
     Tcl_DbNewListObj(objc, objv, __FILE__, __LINE__)
#  undef  Tcl_NewLongObj
#  define Tcl_NewLongObj(val) \
     Tcl_DbNewLongObj(val, __FILE__, __LINE__)
#  undef  Tcl_NewObj
#  define Tcl_NewObj() \
     Tcl_DbNewObj(__FILE__, __LINE__)
#  undef  Tcl_NewStringObj
#  define Tcl_NewStringObj(bytes, len) \
     Tcl_DbNewStringObj(bytes, len, __FILE__, __LINE__)
#  undef  Tcl_NewWideIntObj
#  define Tcl_NewWideIntObj(val) \
     Tcl_DbNewWideIntObj(val, __FILE__, __LINE__)
#endif /* TCL_MEM_DEBUG */

/*
 *----------------------------------------------------------------------------
 * Macros for clients to use to access fields of hash entries:
 */

#define Tcl_GetHashValue(h) ((h)->clientData)
#define Tcl_SetHashValue(h, value) ((h)->clientData = (ClientData) (value))
#define Tcl_GetHashKey(tablePtr, h) \
	((void *) (((tablePtr)->keyType == TCL_ONE_WORD_KEYS || \
		    (tablePtr)->keyType == TCL_CUSTOM_PTR_KEYS) \
		   ? (h)->key.oneWordValue \
		   : (h)->key.string))

/*
 * Macros to use for clients to use to invoke find and create functions for
 * hash tables:
 */

#undef  Tcl_FindHashEntry
#define Tcl_FindHashEntry(tablePtr, key) \
	(*((tablePtr)->findProc))(tablePtr, (const char *)(key))
#undef  Tcl_CreateHashEntry
#define Tcl_CreateHashEntry(tablePtr, key, newPtr) \
	(*((tablePtr)->createProc))(tablePtr, (const char *)(key), newPtr)

/*
 *----------------------------------------------------------------------------
 * Macros that eliminate the overhead of the thread synchronization functions
 * when compiling without thread support.
 */

#ifndef TCL_THREADS
#undef  Tcl_MutexLock
#define Tcl_MutexLock(mutexPtr)
#undef  Tcl_MutexUnlock
#define Tcl_MutexUnlock(mutexPtr)
#undef  Tcl_MutexFinalize
#define Tcl_MutexFinalize(mutexPtr)
#undef  Tcl_ConditionNotify
#define Tcl_ConditionNotify(condPtr)
#undef  Tcl_ConditionWait
#define Tcl_ConditionWait(condPtr, mutexPtr, timePtr)
#undef  Tcl_ConditionFinalize
#define Tcl_ConditionFinalize(condPtr)
#endif /* TCL_THREADS */

/*
 *----------------------------------------------------------------------------
 * Deprecated Tcl functions:
 */

#ifndef TCL_NO_DEPRECATED
#   undef  Tcl_EvalObj
#   define Tcl_EvalObj(interp,objPtr) \
	Tcl_EvalObjEx((interp),(objPtr),0)
#   undef  Tcl_GlobalEvalObj
#   define Tcl_GlobalEvalObj(interp,objPtr) \
	Tcl_EvalObjEx((interp),(objPtr),TCL_EVAL_GLOBAL)

/*
 * These function have been renamed. The old names are deprecated, but we
 * define these macros for backwards compatibilty.
 */

#   define Tcl_Ckalloc		Tcl_Alloc
#   define Tcl_Ckfree		Tcl_Free
#   define Tcl_Ckrealloc	Tcl_Realloc
#   define Tcl_Return		Tcl_SetResult
#   define Tcl_TildeSubst	Tcl_TranslateFileName
#   define panic		Tcl_Panic
#   define panicVA		Tcl_PanicVA
#endif /* !TCL_NO_DEPRECATED */

/*
 *----------------------------------------------------------------------------
 * Convenience declaration of Tcl_AppInit for backwards compatibility. This
 * function is not *implemented* by the tcl library, so the storage class is
 * neither DLLEXPORT nor DLLIMPORT.
 */

extern Tcl_AppInitProc Tcl_AppInit;

#endif /* RC_INVOKED */

/*
 * end block for C++
 */

#ifdef __cplusplus
}
#endif

#endif /* _TCL */

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */
Added compat/tcl-8.6/generic/tclDecls.h.






























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * tclDecls.h --
 *
 *	Declarations of functions in the platform independent public Tcl API.
 *
 * Copyright (c) 1998-1999 by Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#ifndef _TCLDECLS
#define _TCLDECLS

#undef TCL_STORAGE_CLASS
#ifdef BUILD_tcl
#   define TCL_STORAGE_CLASS DLLEXPORT
#else
#   ifdef USE_TCL_STUBS
#      define TCL_STORAGE_CLASS
#   else
#      define TCL_STORAGE_CLASS DLLIMPORT
#   endif
#endif

/*
 * WARNING: This file is automatically generated by the tools/genStubs.tcl
 * script.  Any modifications to the function declarations below should be made
 * in the generic/tcl.decls script.
 */

/* !BEGIN!: Do not edit below this line. */

/*
 * Exported function declarations:
 */

/* 0 */
EXTERN int		Tcl_PkgProvideEx(Tcl_Interp *interp,
				const char *name, const char *version,
				const void *clientData);
/* 1 */
EXTERN CONST84_RETURN char * Tcl_PkgRequireEx(Tcl_Interp *interp,
				const char *name, const char *version,
				int exact, void *clientDataPtr);
/* 2 */
EXTERN void		Tcl_Panic(const char *format, ...) TCL_FORMAT_PRINTF(1, 2);
/* 3 */
EXTERN char *		Tcl_Alloc(unsigned int size);
/* 4 */
EXTERN void		Tcl_Free(char *ptr);
/* 5 */
EXTERN char *		Tcl_Realloc(char *ptr, unsigned int size);
/* 6 */
EXTERN char *		Tcl_DbCkalloc(unsigned int size, const char *file,
				int line);
/* 7 */
EXTERN void		Tcl_DbCkfree(char *ptr, const char *file, int line);
/* 8 */
EXTERN char *		Tcl_DbCkrealloc(char *ptr, unsigned int size,
				const char *file, int line);
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
/* 9 */
EXTERN void		Tcl_CreateFileHandler(int fd, int mask,
				Tcl_FileProc *proc, ClientData clientData);
#endif /* UNIX */
#ifdef MAC_OSX_TCL /* MACOSX */
/* 9 */
EXTERN void		Tcl_CreateFileHandler(int fd, int mask,
				Tcl_FileProc *proc, ClientData clientData);
#endif /* MACOSX */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
/* 10 */
EXTERN void		Tcl_DeleteFileHandler(int fd);
#endif /* UNIX */
#ifdef MAC_OSX_TCL /* MACOSX */
/* 10 */
EXTERN void		Tcl_DeleteFileHandler(int fd);
#endif /* MACOSX */
/* 11 */
EXTERN void		Tcl_SetTimer(const Tcl_Time *timePtr);
/* 12 */
EXTERN void		Tcl_Sleep(int ms);
/* 13 */
EXTERN int		Tcl_WaitForEvent(const Tcl_Time *timePtr);
/* 14 */
EXTERN int		Tcl_AppendAllObjTypes(Tcl_Interp *interp,
				Tcl_Obj *objPtr);
/* 15 */
EXTERN void		Tcl_AppendStringsToObj(Tcl_Obj *objPtr, ...);
/* 16 */
EXTERN void		Tcl_AppendToObj(Tcl_Obj *objPtr, const char *bytes,
				int length);
/* 17 */
EXTERN Tcl_Obj *	Tcl_ConcatObj(int objc, Tcl_Obj *const objv[]);
/* 18 */
EXTERN int		Tcl_ConvertToType(Tcl_Interp *interp,
				Tcl_Obj *objPtr, const Tcl_ObjType *typePtr);
/* 19 */
EXTERN void		Tcl_DbDecrRefCount(Tcl_Obj *objPtr, const char *file,
				int line);
/* 20 */
EXTERN void		Tcl_DbIncrRefCount(Tcl_Obj *objPtr, const char *file,
				int line);
/* 21 */
EXTERN int		Tcl_DbIsShared(Tcl_Obj *objPtr, const char *file,
				int line);
/* 22 */
EXTERN Tcl_Obj *	Tcl_DbNewBooleanObj(int boolValue, const char *file,
				int line);
/* 23 */
EXTERN Tcl_Obj *	Tcl_DbNewByteArrayObj(const unsigned char *bytes,
				int length, const char *file, int line);
/* 24 */
EXTERN Tcl_Obj *	Tcl_DbNewDoubleObj(double doubleValue,
				const char *file, int line);
/* 25 */
EXTERN Tcl_Obj *	Tcl_DbNewListObj(int objc, Tcl_Obj *const *objv,
				const char *file, int line);
/* 26 */
EXTERN Tcl_Obj *	Tcl_DbNewLongObj(long longValue, const char *file,
				int line);
/* 27 */
EXTERN Tcl_Obj *	Tcl_DbNewObj(const char *file, int line);
/* 28 */
EXTERN Tcl_Obj *	Tcl_DbNewStringObj(const char *bytes, int length,
				const char *file, int line);
/* 29 */
EXTERN Tcl_Obj *	Tcl_DuplicateObj(Tcl_Obj *objPtr);
/* 30 */
EXTERN void		TclFreeObj(Tcl_Obj *objPtr);
/* 31 */
EXTERN int		Tcl_GetBoolean(Tcl_Interp *interp, const char *src,
				int *boolPtr);
/* 32 */
EXTERN int		Tcl_GetBooleanFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, int *boolPtr);
/* 33 */
EXTERN unsigned char *	Tcl_GetByteArrayFromObj(Tcl_Obj *objPtr,
				int *lengthPtr);
/* 34 */
EXTERN int		Tcl_GetDouble(Tcl_Interp *interp, const char *src,
				double *doublePtr);
/* 35 */
EXTERN int		Tcl_GetDoubleFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, double *doublePtr);
/* 36 */
EXTERN int		Tcl_GetIndexFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr,
				CONST84 char *const *tablePtr,
				const char *msg, int flags, int *indexPtr);
/* 37 */
EXTERN int		Tcl_GetInt(Tcl_Interp *interp, const char *src,
				int *intPtr);
/* 38 */
EXTERN int		Tcl_GetIntFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, int *intPtr);
/* 39 */
EXTERN int		Tcl_GetLongFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, long *longPtr);
/* 40 */
EXTERN CONST86 Tcl_ObjType * Tcl_GetObjType(const char *typeName);
/* 41 */
EXTERN char *		Tcl_GetStringFromObj(Tcl_Obj *objPtr, int *lengthPtr);
/* 42 */
EXTERN void		Tcl_InvalidateStringRep(Tcl_Obj *objPtr);
/* 43 */
EXTERN int		Tcl_ListObjAppendList(Tcl_Interp *interp,
				Tcl_Obj *listPtr, Tcl_Obj *elemListPtr);
/* 44 */
EXTERN int		Tcl_ListObjAppendElement(Tcl_Interp *interp,
				Tcl_Obj *listPtr, Tcl_Obj *objPtr);
/* 45 */
EXTERN int		Tcl_ListObjGetElements(Tcl_Interp *interp,
				Tcl_Obj *listPtr, int *objcPtr,
				Tcl_Obj ***objvPtr);
/* 46 */
EXTERN int		Tcl_ListObjIndex(Tcl_Interp *interp,
				Tcl_Obj *listPtr, int index,
				Tcl_Obj **objPtrPtr);
/* 47 */
EXTERN int		Tcl_ListObjLength(Tcl_Interp *interp,
				Tcl_Obj *listPtr, int *lengthPtr);
/* 48 */
EXTERN int		Tcl_ListObjReplace(Tcl_Interp *interp,
				Tcl_Obj *listPtr, int first, int count,
				int objc, Tcl_Obj *const objv[]);
/* 49 */
EXTERN Tcl_Obj *	Tcl_NewBooleanObj(int boolValue);
/* 50 */
EXTERN Tcl_Obj *	Tcl_NewByteArrayObj(const unsigned char *bytes,
				int length);
/* 51 */
EXTERN Tcl_Obj *	Tcl_NewDoubleObj(double doubleValue);
/* 52 */
EXTERN Tcl_Obj *	Tcl_NewIntObj(int intValue);
/* 53 */
EXTERN Tcl_Obj *	Tcl_NewListObj(int objc, Tcl_Obj *const objv[]);
/* 54 */
EXTERN Tcl_Obj *	Tcl_NewLongObj(long longValue);
/* 55 */
EXTERN Tcl_Obj *	Tcl_NewObj(void);
/* 56 */
EXTERN Tcl_Obj *	Tcl_NewStringObj(const char *bytes, int length);
/* 57 */
EXTERN void		Tcl_SetBooleanObj(Tcl_Obj *objPtr, int boolValue);
/* 58 */
EXTERN unsigned char *	Tcl_SetByteArrayLength(Tcl_Obj *objPtr, int length);
/* 59 */
EXTERN void		Tcl_SetByteArrayObj(Tcl_Obj *objPtr,
				const unsigned char *bytes, int length);
/* 60 */
EXTERN void		Tcl_SetDoubleObj(Tcl_Obj *objPtr, double doubleValue);
/* 61 */
EXTERN void		Tcl_SetIntObj(Tcl_Obj *objPtr, int intValue);
/* 62 */
EXTERN void		Tcl_SetListObj(Tcl_Obj *objPtr, int objc,
				Tcl_Obj *const objv[]);
/* 63 */
EXTERN void		Tcl_SetLongObj(Tcl_Obj *objPtr, long longValue);
/* 64 */
EXTERN void		Tcl_SetObjLength(Tcl_Obj *objPtr, int length);
/* 65 */
EXTERN void		Tcl_SetStringObj(Tcl_Obj *objPtr, const char *bytes,
				int length);
/* 66 */
EXTERN void		Tcl_AddErrorInfo(Tcl_Interp *interp,
				const char *message);
/* 67 */
EXTERN void		Tcl_AddObjErrorInfo(Tcl_Interp *interp,
				const char *message, int length);
/* 68 */
EXTERN void		Tcl_AllowExceptions(Tcl_Interp *interp);
/* 69 */
EXTERN void		Tcl_AppendElement(Tcl_Interp *interp,
				const char *element);
/* 70 */
EXTERN void		Tcl_AppendResult(Tcl_Interp *interp, ...);
/* 71 */
EXTERN Tcl_AsyncHandler	 Tcl_AsyncCreate(Tcl_AsyncProc *proc,
				ClientData clientData);
/* 72 */
EXTERN void		Tcl_AsyncDelete(Tcl_AsyncHandler async);
/* 73 */
EXTERN int		Tcl_AsyncInvoke(Tcl_Interp *interp, int code);
/* 74 */
EXTERN void		Tcl_AsyncMark(Tcl_AsyncHandler async);
/* 75 */
EXTERN int		Tcl_AsyncReady(void);
/* 76 */
EXTERN void		Tcl_BackgroundError(Tcl_Interp *interp);
/* 77 */
EXTERN char		Tcl_Backslash(const char *src, int *readPtr);
/* 78 */
EXTERN int		Tcl_BadChannelOption(Tcl_Interp *interp,
				const char *optionName,
				const char *optionList);
/* 79 */
EXTERN void		Tcl_CallWhenDeleted(Tcl_Interp *interp,
				Tcl_InterpDeleteProc *proc,
				ClientData clientData);
/* 80 */
EXTERN void		Tcl_CancelIdleCall(Tcl_IdleProc *idleProc,
				ClientData clientData);
/* 81 */
EXTERN int		Tcl_Close(Tcl_Interp *interp, Tcl_Channel chan);
/* 82 */
EXTERN int		Tcl_CommandComplete(const char *cmd);
/* 83 */
EXTERN char *		Tcl_Concat(int argc, CONST84 char *const *argv);
/* 84 */
EXTERN int		Tcl_ConvertElement(const char *src, char *dst,
				int flags);
/* 85 */
EXTERN int		Tcl_ConvertCountedElement(const char *src,
				int length, char *dst, int flags);
/* 86 */
EXTERN int		Tcl_CreateAlias(Tcl_Interp *slave,
				const char *slaveCmd, Tcl_Interp *target,
				const char *targetCmd, int argc,
				CONST84 char *const *argv);
/* 87 */
EXTERN int		Tcl_CreateAliasObj(Tcl_Interp *slave,
				const char *slaveCmd, Tcl_Interp *target,
				const char *targetCmd, int objc,
				Tcl_Obj *const objv[]);
/* 88 */
EXTERN Tcl_Channel	Tcl_CreateChannel(const Tcl_ChannelType *typePtr,
				const char *chanName,
				ClientData instanceData, int mask);
/* 89 */
EXTERN void		Tcl_CreateChannelHandler(Tcl_Channel chan, int mask,
				Tcl_ChannelProc *proc, ClientData clientData);
/* 90 */
EXTERN void		Tcl_CreateCloseHandler(Tcl_Channel chan,
				Tcl_CloseProc *proc, ClientData clientData);
/* 91 */
EXTERN Tcl_Command	Tcl_CreateCommand(Tcl_Interp *interp,
				const char *cmdName, Tcl_CmdProc *proc,
				ClientData clientData,
				Tcl_CmdDeleteProc *deleteProc);
/* 92 */
EXTERN void		Tcl_CreateEventSource(Tcl_EventSetupProc *setupProc,
				Tcl_EventCheckProc *checkProc,
				ClientData clientData);
/* 93 */
EXTERN void		Tcl_CreateExitHandler(Tcl_ExitProc *proc,
				ClientData clientData);
/* 94 */
EXTERN Tcl_Interp *	Tcl_CreateInterp(void);
/* 95 */
EXTERN void		Tcl_CreateMathFunc(Tcl_Interp *interp,
				const char *name, int numArgs,
				Tcl_ValueType *argTypes, Tcl_MathProc *proc,
				ClientData clientData);
/* 96 */
EXTERN Tcl_Command	Tcl_CreateObjCommand(Tcl_Interp *interp,
				const char *cmdName, Tcl_ObjCmdProc *proc,
				ClientData clientData,
				Tcl_CmdDeleteProc *deleteProc);
/* 97 */
EXTERN Tcl_Interp *	Tcl_CreateSlave(Tcl_Interp *interp,
				const char *slaveName, int isSafe);
/* 98 */
EXTERN Tcl_TimerToken	Tcl_CreateTimerHandler(int milliseconds,
				Tcl_TimerProc *proc, ClientData clientData);
/* 99 */
EXTERN Tcl_Trace	Tcl_CreateTrace(Tcl_Interp *interp, int level,
				Tcl_CmdTraceProc *proc,
				ClientData clientData);
/* 100 */
EXTERN void		Tcl_DeleteAssocData(Tcl_Interp *interp,
				const char *name);
/* 101 */
EXTERN void		Tcl_DeleteChannelHandler(Tcl_Channel chan,
				Tcl_ChannelProc *proc, ClientData clientData);
/* 102 */
EXTERN void		Tcl_DeleteCloseHandler(Tcl_Channel chan,
				Tcl_CloseProc *proc, ClientData clientData);
/* 103 */
EXTERN int		Tcl_DeleteCommand(Tcl_Interp *interp,
				const char *cmdName);
/* 104 */
EXTERN int		Tcl_DeleteCommandFromToken(Tcl_Interp *interp,
				Tcl_Command command);
/* 105 */
EXTERN void		Tcl_DeleteEvents(Tcl_EventDeleteProc *proc,
				ClientData clientData);
/* 106 */
EXTERN void		Tcl_DeleteEventSource(Tcl_EventSetupProc *setupProc,
				Tcl_EventCheckProc *checkProc,
				ClientData clientData);
/* 107 */
EXTERN void		Tcl_DeleteExitHandler(Tcl_ExitProc *proc,
				ClientData clientData);
/* 108 */
EXTERN void		Tcl_DeleteHashEntry(Tcl_HashEntry *entryPtr);
/* 109 */
EXTERN void		Tcl_DeleteHashTable(Tcl_HashTable *tablePtr);
/* 110 */
EXTERN void		Tcl_DeleteInterp(Tcl_Interp *interp);
/* 111 */
EXTERN void		Tcl_DetachPids(int numPids, Tcl_Pid *pidPtr);
/* 112 */
EXTERN void		Tcl_DeleteTimerHandler(Tcl_TimerToken token);
/* 113 */
EXTERN void		Tcl_DeleteTrace(Tcl_Interp *interp, Tcl_Trace trace);
/* 114 */
EXTERN void		Tcl_DontCallWhenDeleted(Tcl_Interp *interp,
				Tcl_InterpDeleteProc *proc,
				ClientData clientData);
/* 115 */
EXTERN int		Tcl_DoOneEvent(int flags);
/* 116 */
EXTERN void		Tcl_DoWhenIdle(Tcl_IdleProc *proc,
				ClientData clientData);
/* 117 */
EXTERN char *		Tcl_DStringAppend(Tcl_DString *dsPtr,
				const char *bytes, int length);
/* 118 */
EXTERN char *		Tcl_DStringAppendElement(Tcl_DString *dsPtr,
				const char *element);
/* 119 */
EXTERN void		Tcl_DStringEndSublist(Tcl_DString *dsPtr);
/* 120 */
EXTERN void		Tcl_DStringFree(Tcl_DString *dsPtr);
/* 121 */
EXTERN void		Tcl_DStringGetResult(Tcl_Interp *interp,
				Tcl_DString *dsPtr);
/* 122 */
EXTERN void		Tcl_DStringInit(Tcl_DString *dsPtr);
/* 123 */
EXTERN void		Tcl_DStringResult(Tcl_Interp *interp,
				Tcl_DString *dsPtr);
/* 124 */
EXTERN void		Tcl_DStringSetLength(Tcl_DString *dsPtr, int length);
/* 125 */
EXTERN void		Tcl_DStringStartSublist(Tcl_DString *dsPtr);
/* 126 */
EXTERN int		Tcl_Eof(Tcl_Channel chan);
/* 127 */
EXTERN CONST84_RETURN char * Tcl_ErrnoId(void);
/* 128 */
EXTERN CONST84_RETURN char * Tcl_ErrnoMsg(int err);
/* 129 */
EXTERN int		Tcl_Eval(Tcl_Interp *interp, const char *script);
/* 130 */
EXTERN int		Tcl_EvalFile(Tcl_Interp *interp,
				const char *fileName);
/* 131 */
EXTERN int		Tcl_EvalObj(Tcl_Interp *interp, Tcl_Obj *objPtr);
/* 132 */
EXTERN void		Tcl_EventuallyFree(ClientData clientData,
				Tcl_FreeProc *freeProc);
/* 133 */
EXTERN void		Tcl_Exit(int status);
/* 134 */
EXTERN int		Tcl_ExposeCommand(Tcl_Interp *interp,
				const char *hiddenCmdToken,
				const char *cmdName);
/* 135 */
EXTERN int		Tcl_ExprBoolean(Tcl_Interp *interp, const char *expr,
				int *ptr);
/* 136 */
EXTERN int		Tcl_ExprBooleanObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, int *ptr);
/* 137 */
EXTERN int		Tcl_ExprDouble(Tcl_Interp *interp, const char *expr,
				double *ptr);
/* 138 */
EXTERN int		Tcl_ExprDoubleObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, double *ptr);
/* 139 */
EXTERN int		Tcl_ExprLong(Tcl_Interp *interp, const char *expr,
				long *ptr);
/* 140 */
EXTERN int		Tcl_ExprLongObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
				long *ptr);
/* 141 */
EXTERN int		Tcl_ExprObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
				Tcl_Obj **resultPtrPtr);
/* 142 */
EXTERN int		Tcl_ExprString(Tcl_Interp *interp, const char *expr);
/* 143 */
EXTERN void		Tcl_Finalize(void);
/* 144 */
EXTERN void		Tcl_FindExecutable(const char *argv0);
/* 145 */
EXTERN Tcl_HashEntry *	Tcl_FirstHashEntry(Tcl_HashTable *tablePtr,
				Tcl_HashSearch *searchPtr);
/* 146 */
EXTERN int		Tcl_Flush(Tcl_Channel chan);
/* 147 */
EXTERN void		Tcl_FreeResult(Tcl_Interp *interp);
/* 148 */
EXTERN int		Tcl_GetAlias(Tcl_Interp *interp,
				const char *slaveCmd,
				Tcl_Interp **targetInterpPtr,
				CONST84 char **targetCmdPtr, int *argcPtr,
				CONST84 char ***argvPtr);
/* 149 */
EXTERN int		Tcl_GetAliasObj(Tcl_Interp *interp,
				const char *slaveCmd,
				Tcl_Interp **targetInterpPtr,
				CONST84 char **targetCmdPtr, int *objcPtr,
				Tcl_Obj ***objv);
/* 150 */
EXTERN ClientData	Tcl_GetAssocData(Tcl_Interp *interp,
				const char *name,
				Tcl_InterpDeleteProc **procPtr);
/* 151 */
EXTERN Tcl_Channel	Tcl_GetChannel(Tcl_Interp *interp,
				const char *chanName, int *modePtr);
/* 152 */
EXTERN int		Tcl_GetChannelBufferSize(Tcl_Channel chan);
/* 153 */
EXTERN int		Tcl_GetChannelHandle(Tcl_Channel chan, int direction,
				ClientData *handlePtr);
/* 154 */
EXTERN ClientData	Tcl_GetChannelInstanceData(Tcl_Channel chan);
/* 155 */
EXTERN int		Tcl_GetChannelMode(Tcl_Channel chan);
/* 156 */
EXTERN CONST84_RETURN char * Tcl_GetChannelName(Tcl_Channel chan);
/* 157 */
EXTERN int		Tcl_GetChannelOption(Tcl_Interp *interp,
				Tcl_Channel chan, const char *optionName,
				Tcl_DString *dsPtr);
/* 158 */
EXTERN CONST86 Tcl_ChannelType * Tcl_GetChannelType(Tcl_Channel chan);
/* 159 */
EXTERN int		Tcl_GetCommandInfo(Tcl_Interp *interp,
				const char *cmdName, Tcl_CmdInfo *infoPtr);
/* 160 */
EXTERN CONST84_RETURN char * Tcl_GetCommandName(Tcl_Interp *interp,
				Tcl_Command command);
/* 161 */
EXTERN int		Tcl_GetErrno(void);
/* 162 */
EXTERN CONST84_RETURN char * Tcl_GetHostName(void);
/* 163 */
EXTERN int		Tcl_GetInterpPath(Tcl_Interp *askInterp,
				Tcl_Interp *slaveInterp);
/* 164 */
EXTERN Tcl_Interp *	Tcl_GetMaster(Tcl_Interp *interp);
/* 165 */
EXTERN const char *	Tcl_GetNameOfExecutable(void);
/* 166 */
EXTERN Tcl_Obj *	Tcl_GetObjResult(Tcl_Interp *interp);
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
/* 167 */
EXTERN int		Tcl_GetOpenFile(Tcl_Interp *interp,
				const char *chanID, int forWriting,
				int checkUsage, ClientData *filePtr);
#endif /* UNIX */
#ifdef MAC_OSX_TCL /* MACOSX */
/* 167 */
EXTERN int		Tcl_GetOpenFile(Tcl_Interp *interp,
				const char *chanID, int forWriting,
				int checkUsage, ClientData *filePtr);
#endif /* MACOSX */
/* 168 */
EXTERN Tcl_PathType	Tcl_GetPathType(const char *path);
/* 169 */
EXTERN int		Tcl_Gets(Tcl_Channel chan, Tcl_DString *dsPtr);
/* 170 */
EXTERN int		Tcl_GetsObj(Tcl_Channel chan, Tcl_Obj *objPtr);
/* 171 */
EXTERN int		Tcl_GetServiceMode(void);
/* 172 */
EXTERN Tcl_Interp *	Tcl_GetSlave(Tcl_Interp *interp,
				const char *slaveName);
/* 173 */
EXTERN Tcl_Channel	Tcl_GetStdChannel(int type);
/* 174 */
EXTERN CONST84_RETURN char * Tcl_GetStringResult(Tcl_Interp *interp);
/* 175 */
EXTERN CONST84_RETURN char * Tcl_GetVar(Tcl_Interp *interp,
				const char *varName, int flags);
/* 176 */
EXTERN CONST84_RETURN char * Tcl_GetVar2(Tcl_Interp *interp,
				const char *part1, const char *part2,
				int flags);
/* 177 */
EXTERN int		Tcl_GlobalEval(Tcl_Interp *interp,
				const char *command);
/* 178 */
EXTERN int		Tcl_GlobalEvalObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr);
/* 179 */
EXTERN int		Tcl_HideCommand(Tcl_Interp *interp,
				const char *cmdName,
				const char *hiddenCmdToken);
/* 180 */
EXTERN int		Tcl_Init(Tcl_Interp *interp);
/* 181 */
EXTERN void		Tcl_InitHashTable(Tcl_HashTable *tablePtr,
				int keyType);
/* 182 */
EXTERN int		Tcl_InputBlocked(Tcl_Channel chan);
/* 183 */
EXTERN int		Tcl_InputBuffered(Tcl_Channel chan);
/* 184 */
EXTERN int		Tcl_InterpDeleted(Tcl_Interp *interp);
/* 185 */
EXTERN int		Tcl_IsSafe(Tcl_Interp *interp);
/* 186 */
EXTERN char *		Tcl_JoinPath(int argc, CONST84 char *const *argv,
				Tcl_DString *resultPtr);
/* 187 */
EXTERN int		Tcl_LinkVar(Tcl_Interp *interp, const char *varName,
				char *addr, int type);
/* Slot 188 is reserved */
/* 189 */
EXTERN Tcl_Channel	Tcl_MakeFileChannel(ClientData handle, int mode);
/* 190 */
EXTERN int		Tcl_MakeSafe(Tcl_Interp *interp);
/* 191 */
EXTERN Tcl_Channel	Tcl_MakeTcpClientChannel(ClientData tcpSocket);
/* 192 */
EXTERN char *		Tcl_Merge(int argc, CONST84 char *const *argv);
/* 193 */
EXTERN Tcl_HashEntry *	Tcl_NextHashEntry(Tcl_HashSearch *searchPtr);
/* 194 */
EXTERN void		Tcl_NotifyChannel(Tcl_Channel channel, int mask);
/* 195 */
EXTERN Tcl_Obj *	Tcl_ObjGetVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
				Tcl_Obj *part2Ptr, int flags);
/* 196 */
EXTERN Tcl_Obj *	Tcl_ObjSetVar2(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
				Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr,
				int flags);
/* 197 */
EXTERN Tcl_Channel	Tcl_OpenCommandChannel(Tcl_Interp *interp, int argc,
				CONST84 char **argv, int flags);
/* 198 */
EXTERN Tcl_Channel	Tcl_OpenFileChannel(Tcl_Interp *interp,
				const char *fileName, const char *modeString,
				int permissions);
/* 199 */
EXTERN Tcl_Channel	Tcl_OpenTcpClient(Tcl_Interp *interp, int port,
				const char *address, const char *myaddr,
				int myport, int async);
/* 200 */
EXTERN Tcl_Channel	Tcl_OpenTcpServer(Tcl_Interp *interp, int port,
				const char *host,
				Tcl_TcpAcceptProc *acceptProc,
				ClientData callbackData);
/* 201 */
EXTERN void		Tcl_Preserve(ClientData data);
/* 202 */
EXTERN void		Tcl_PrintDouble(Tcl_Interp *interp, double value,
				char *dst);
/* 203 */
EXTERN int		Tcl_PutEnv(const char *assignment);
/* 204 */
EXTERN CONST84_RETURN char * Tcl_PosixError(Tcl_Interp *interp);
/* 205 */
EXTERN void		Tcl_QueueEvent(Tcl_Event *evPtr,
				Tcl_QueuePosition position);
/* 206 */
EXTERN int		Tcl_Read(Tcl_Channel chan, char *bufPtr, int toRead);
/* 207 */
EXTERN void		Tcl_ReapDetachedProcs(void);
/* 208 */
EXTERN int		Tcl_RecordAndEval(Tcl_Interp *interp,
				const char *cmd, int flags);
/* 209 */
EXTERN int		Tcl_RecordAndEvalObj(Tcl_Interp *interp,
				Tcl_Obj *cmdPtr, int flags);
/* 210 */
EXTERN void		Tcl_RegisterChannel(Tcl_Interp *interp,
				Tcl_Channel chan);
/* 211 */
EXTERN void		Tcl_RegisterObjType(const Tcl_ObjType *typePtr);
/* 212 */
EXTERN Tcl_RegExp	Tcl_RegExpCompile(Tcl_Interp *interp,
				const char *pattern);
/* 213 */
EXTERN int		Tcl_RegExpExec(Tcl_Interp *interp, Tcl_RegExp regexp,
				const char *text, const char *start);
/* 214 */
EXTERN int		Tcl_RegExpMatch(Tcl_Interp *interp, const char *text,
				const char *pattern);
/* 215 */
EXTERN void		Tcl_RegExpRange(Tcl_RegExp regexp, int index,
				CONST84 char **startPtr,
				CONST84 char **endPtr);
/* 216 */
EXTERN void		Tcl_Release(ClientData clientData);
/* 217 */
EXTERN void		Tcl_ResetResult(Tcl_Interp *interp);
/* 218 */
EXTERN int		Tcl_ScanElement(const char *src, int *flagPtr);
/* 219 */
EXTERN int		Tcl_ScanCountedElement(const char *src, int length,
				int *flagPtr);
/* 220 */
EXTERN int		Tcl_SeekOld(Tcl_Channel chan, int offset, int mode);
/* 221 */
EXTERN int		Tcl_ServiceAll(void);
/* 222 */
EXTERN int		Tcl_ServiceEvent(int flags);
/* 223 */
EXTERN void		Tcl_SetAssocData(Tcl_Interp *interp,
				const char *name, Tcl_InterpDeleteProc *proc,
				ClientData clientData);
/* 224 */
EXTERN void		Tcl_SetChannelBufferSize(Tcl_Channel chan, int sz);
/* 225 */
EXTERN int		Tcl_SetChannelOption(Tcl_Interp *interp,
				Tcl_Channel chan, const char *optionName,
				const char *newValue);
/* 226 */
EXTERN int		Tcl_SetCommandInfo(Tcl_Interp *interp,
				const char *cmdName,
				const Tcl_CmdInfo *infoPtr);
/* 227 */
EXTERN void		Tcl_SetErrno(int err);
/* 228 */
EXTERN void		Tcl_SetErrorCode(Tcl_Interp *interp, ...);
/* 229 */
EXTERN void		Tcl_SetMaxBlockTime(const Tcl_Time *timePtr);
/* 230 */
EXTERN void		Tcl_SetPanicProc(Tcl_PanicProc *panicProc);
/* 231 */
EXTERN int		Tcl_SetRecursionLimit(Tcl_Interp *interp, int depth);
/* 232 */
EXTERN void		Tcl_SetResult(Tcl_Interp *interp, char *result,
				Tcl_FreeProc *freeProc);
/* 233 */
EXTERN int		Tcl_SetServiceMode(int mode);
/* 234 */
EXTERN void		Tcl_SetObjErrorCode(Tcl_Interp *interp,
				Tcl_Obj *errorObjPtr);
/* 235 */
EXTERN void		Tcl_SetObjResult(Tcl_Interp *interp,
				Tcl_Obj *resultObjPtr);
/* 236 */
EXTERN void		Tcl_SetStdChannel(Tcl_Channel channel, int type);
/* 237 */
EXTERN CONST84_RETURN char * Tcl_SetVar(Tcl_Interp *interp,
				const char *varName, const char *newValue,
				int flags);
/* 238 */
EXTERN CONST84_RETURN char * Tcl_SetVar2(Tcl_Interp *interp,
				const char *part1, const char *part2,
				const char *newValue, int flags);
/* 239 */
EXTERN CONST84_RETURN char * Tcl_SignalId(int sig);
/* 240 */
EXTERN CONST84_RETURN char * Tcl_SignalMsg(int sig);
/* 241 */
EXTERN void		Tcl_SourceRCFile(Tcl_Interp *interp);
/* 242 */
EXTERN int		Tcl_SplitList(Tcl_Interp *interp,
				const char *listStr, int *argcPtr,
				CONST84 char ***argvPtr);
/* 243 */
EXTERN void		Tcl_SplitPath(const char *path, int *argcPtr,
				CONST84 char ***argvPtr);
/* 244 */
EXTERN void		Tcl_StaticPackage(Tcl_Interp *interp,
				const char *pkgName,
				Tcl_PackageInitProc *initProc,
				Tcl_PackageInitProc *safeInitProc);
/* 245 */
EXTERN int		Tcl_StringMatch(const char *str, const char *pattern);
/* 246 */
EXTERN int		Tcl_TellOld(Tcl_Channel chan);
/* 247 */
EXTERN int		Tcl_TraceVar(Tcl_Interp *interp, const char *varName,
				int flags, Tcl_VarTraceProc *proc,
				ClientData clientData);
/* 248 */
EXTERN int		Tcl_TraceVar2(Tcl_Interp *interp, const char *part1,
				const char *part2, int flags,
				Tcl_VarTraceProc *proc,
				ClientData clientData);
/* 249 */
EXTERN char *		Tcl_TranslateFileName(Tcl_Interp *interp,
				const char *name, Tcl_DString *bufferPtr);
/* 250 */
EXTERN int		Tcl_Ungets(Tcl_Channel chan, const char *str,
				int len, int atHead);
/* 251 */
EXTERN void		Tcl_UnlinkVar(Tcl_Interp *interp,
				const char *varName);
/* 252 */
EXTERN int		Tcl_UnregisterChannel(Tcl_Interp *interp,
				Tcl_Channel chan);
/* 253 */
EXTERN int		Tcl_UnsetVar(Tcl_Interp *interp, const char *varName,
				int flags);
/* 254 */
EXTERN int		Tcl_UnsetVar2(Tcl_Interp *interp, const char *part1,
				const char *part2, int flags);
/* 255 */
EXTERN void		Tcl_UntraceVar(Tcl_Interp *interp,
				const char *varName, int flags,
				Tcl_VarTraceProc *proc,
				ClientData clientData);
/* 256 */
EXTERN void		Tcl_UntraceVar2(Tcl_Interp *interp,
				const char *part1, const char *part2,
				int flags, Tcl_VarTraceProc *proc,
				ClientData clientData);
/* 257 */
EXTERN void		Tcl_UpdateLinkedVar(Tcl_Interp *interp,
				const char *varName);
/* 258 */
EXTERN int		Tcl_UpVar(Tcl_Interp *interp, const char *frameName,
				const char *varName, const char *localName,
				int flags);
/* 259 */
EXTERN int		Tcl_UpVar2(Tcl_Interp *interp, const char *frameName,
				const char *part1, const char *part2,
				const char *localName, int flags);
/* 260 */
EXTERN int		Tcl_VarEval(Tcl_Interp *interp, ...);
/* 261 */
EXTERN ClientData	Tcl_VarTraceInfo(Tcl_Interp *interp,
				const char *varName, int flags,
				Tcl_VarTraceProc *procPtr,
				ClientData prevClientData);
/* 262 */
EXTERN ClientData	Tcl_VarTraceInfo2(Tcl_Interp *interp,
				const char *part1, const char *part2,
				int flags, Tcl_VarTraceProc *procPtr,
				ClientData prevClientData);
/* 263 */
EXTERN int		Tcl_Write(Tcl_Channel chan, const char *s, int slen);
/* 264 */
EXTERN void		Tcl_WrongNumArgs(Tcl_Interp *interp, int objc,
				Tcl_Obj *const objv[], const char *message);
/* 265 */
EXTERN int		Tcl_DumpActiveMemory(const char *fileName);
/* 266 */
EXTERN void		Tcl_ValidateAllMemory(const char *file, int line);
/* 267 */
EXTERN void		Tcl_AppendResultVA(Tcl_Interp *interp,
				va_list argList);
/* 268 */
EXTERN void		Tcl_AppendStringsToObjVA(Tcl_Obj *objPtr,
				va_list argList);
/* 269 */
EXTERN char *		Tcl_HashStats(Tcl_HashTable *tablePtr);
/* 270 */
EXTERN CONST84_RETURN char * Tcl_ParseVar(Tcl_Interp *interp,
				const char *start, CONST84 char **termPtr);
/* 271 */
EXTERN CONST84_RETURN char * Tcl_PkgPresent(Tcl_Interp *interp,
				const char *name, const char *version,
				int exact);
/* 272 */
EXTERN CONST84_RETURN char * Tcl_PkgPresentEx(Tcl_Interp *interp,
				const char *name, const char *version,
				int exact, void *clientDataPtr);
/* 273 */
EXTERN int		Tcl_PkgProvide(Tcl_Interp *interp, const char *name,
				const char *version);
/* 274 */
EXTERN CONST84_RETURN char * Tcl_PkgRequire(Tcl_Interp *interp,
				const char *name, const char *version,
				int exact);
/* 275 */
EXTERN void		Tcl_SetErrorCodeVA(Tcl_Interp *interp,
				va_list argList);
/* 276 */
EXTERN int		Tcl_VarEvalVA(Tcl_Interp *interp, va_list argList);
/* 277 */
EXTERN Tcl_Pid		Tcl_WaitPid(Tcl_Pid pid, int *statPtr, int options);
/* 278 */
EXTERN void		Tcl_PanicVA(const char *format, va_list argList);
/* 279 */
EXTERN void		Tcl_GetVersion(int *major, int *minor,
				int *patchLevel, int *type);
/* 280 */
EXTERN void		Tcl_InitMemory(Tcl_Interp *interp);
/* 281 */
EXTERN Tcl_Channel	Tcl_StackChannel(Tcl_Interp *interp,
				const Tcl_ChannelType *typePtr,
				ClientData instanceData, int mask,
				Tcl_Channel prevChan);
/* 282 */
EXTERN int		Tcl_UnstackChannel(Tcl_Interp *interp,
				Tcl_Channel chan);
/* 283 */
EXTERN Tcl_Channel	Tcl_GetStackedChannel(Tcl_Channel chan);
/* 284 */
EXTERN void		Tcl_SetMainLoop(Tcl_MainLoopProc *proc);
/* Slot 285 is reserved */
/* 286 */
EXTERN void		Tcl_AppendObjToObj(Tcl_Obj *objPtr,
				Tcl_Obj *appendObjPtr);
/* 287 */
EXTERN Tcl_Encoding	Tcl_CreateEncoding(const Tcl_EncodingType *typePtr);
/* 288 */
EXTERN void		Tcl_CreateThreadExitHandler(Tcl_ExitProc *proc,
				ClientData clientData);
/* 289 */
EXTERN void		Tcl_DeleteThreadExitHandler(Tcl_ExitProc *proc,
				ClientData clientData);
/* 290 */
EXTERN void		Tcl_DiscardResult(Tcl_SavedResult *statePtr);
/* 291 */
EXTERN int		Tcl_EvalEx(Tcl_Interp *interp, const char *script,
				int numBytes, int flags);
/* 292 */
EXTERN int		Tcl_EvalObjv(Tcl_Interp *interp, int objc,
				Tcl_Obj *const objv[], int flags);
/* 293 */
EXTERN int		Tcl_EvalObjEx(Tcl_Interp *interp, Tcl_Obj *objPtr,
				int flags);
/* 294 */
EXTERN void		Tcl_ExitThread(int status);
/* 295 */
EXTERN int		Tcl_ExternalToUtf(Tcl_Interp *interp,
				Tcl_Encoding encoding, const char *src,
				int srcLen, int flags,
				Tcl_EncodingState *statePtr, char *dst,
				int dstLen, int *srcReadPtr,
				int *dstWrotePtr, int *dstCharsPtr);
/* 296 */
EXTERN char *		Tcl_ExternalToUtfDString(Tcl_Encoding encoding,
				const char *src, int srcLen,
				Tcl_DString *dsPtr);
/* 297 */
EXTERN void		Tcl_FinalizeThread(void);
/* 298 */
EXTERN void		Tcl_FinalizeNotifier(ClientData clientData);
/* 299 */
EXTERN void		Tcl_FreeEncoding(Tcl_Encoding encoding);
/* 300 */
EXTERN Tcl_ThreadId	Tcl_GetCurrentThread(void);
/* 301 */
EXTERN Tcl_Encoding	Tcl_GetEncoding(Tcl_Interp *interp, const char *name);
/* 302 */
EXTERN CONST84_RETURN char * Tcl_GetEncodingName(Tcl_Encoding encoding);
/* 303 */
EXTERN void		Tcl_GetEncodingNames(Tcl_Interp *interp);
/* 304 */
EXTERN int		Tcl_GetIndexFromObjStruct(Tcl_Interp *interp,
				Tcl_Obj *objPtr, const void *tablePtr,
				int offset, const char *msg, int flags,
				int *indexPtr);
/* 305 */
EXTERN void *		Tcl_GetThreadData(Tcl_ThreadDataKey *keyPtr,
				int size);
/* 306 */
EXTERN Tcl_Obj *	Tcl_GetVar2Ex(Tcl_Interp *interp, const char *part1,
				const char *part2, int flags);
/* 307 */
EXTERN ClientData	Tcl_InitNotifier(void);
/* 308 */
EXTERN void		Tcl_MutexLock(Tcl_Mutex *mutexPtr);
/* 309 */
EXTERN void		Tcl_MutexUnlock(Tcl_Mutex *mutexPtr);
/* 310 */
EXTERN void		Tcl_ConditionNotify(Tcl_Condition *condPtr);
/* 311 */
EXTERN void		Tcl_ConditionWait(Tcl_Condition *condPtr,
				Tcl_Mutex *mutexPtr, const Tcl_Time *timePtr);
/* 312 */
EXTERN int		Tcl_NumUtfChars(const char *src, int length);
/* 313 */
EXTERN int		Tcl_ReadChars(Tcl_Channel channel, Tcl_Obj *objPtr,
				int charsToRead, int appendFlag);
/* 314 */
EXTERN void		Tcl_RestoreResult(Tcl_Interp *interp,
				Tcl_SavedResult *statePtr);
/* 315 */
EXTERN void		Tcl_SaveResult(Tcl_Interp *interp,
				Tcl_SavedResult *statePtr);
/* 316 */
EXTERN int		Tcl_SetSystemEncoding(Tcl_Interp *interp,
				const char *name);
/* 317 */
EXTERN Tcl_Obj *	Tcl_SetVar2Ex(Tcl_Interp *interp, const char *part1,
				const char *part2, Tcl_Obj *newValuePtr,
				int flags);
/* 318 */
EXTERN void		Tcl_ThreadAlert(Tcl_ThreadId threadId);
/* 319 */
EXTERN void		Tcl_ThreadQueueEvent(Tcl_ThreadId threadId,
				Tcl_Event *evPtr, Tcl_QueuePosition position);
/* 320 */
EXTERN Tcl_UniChar	Tcl_UniCharAtIndex(const char *src, int index);
/* 321 */
EXTERN Tcl_UniChar	Tcl_UniCharToLower(int ch);
/* 322 */
EXTERN Tcl_UniChar	Tcl_UniCharToTitle(int ch);
/* 323 */
EXTERN Tcl_UniChar	Tcl_UniCharToUpper(int ch);
/* 324 */
EXTERN int		Tcl_UniCharToUtf(int ch, char *buf);
/* 325 */
EXTERN CONST84_RETURN char * Tcl_UtfAtIndex(const char *src, int index);
/* 326 */
EXTERN int		Tcl_UtfCharComplete(const char *src, int length);
/* 327 */
EXTERN int		Tcl_UtfBackslash(const char *src, int *readPtr,
				char *dst);
/* 328 */
EXTERN CONST84_RETURN char * Tcl_UtfFindFirst(const char *src, int ch);
/* 329 */
EXTERN CONST84_RETURN char * Tcl_UtfFindLast(const char *src, int ch);
/* 330 */
EXTERN CONST84_RETURN char * Tcl_UtfNext(const char *src);
/* 331 */
EXTERN CONST84_RETURN char * Tcl_UtfPrev(const char *src, const char *start);
/* 332 */
EXTERN int		Tcl_UtfToExternal(Tcl_Interp *interp,
				Tcl_Encoding encoding, const char *src,
				int srcLen, int flags,
				Tcl_EncodingState *statePtr, char *dst,
				int dstLen, int *srcReadPtr,
				int *dstWrotePtr, int *dstCharsPtr);
/* 333 */
EXTERN char *		Tcl_UtfToExternalDString(Tcl_Encoding encoding,
				const char *src, int srcLen,
				Tcl_DString *dsPtr);
/* 334 */
EXTERN int		Tcl_UtfToLower(char *src);
/* 335 */
EXTERN int		Tcl_UtfToTitle(char *src);
/* 336 */
EXTERN int		Tcl_UtfToUniChar(const char *src, Tcl_UniChar *chPtr);
/* 337 */
EXTERN int		Tcl_UtfToUpper(char *src);
/* 338 */
EXTERN int		Tcl_WriteChars(Tcl_Channel chan, const char *src,
				int srcLen);
/* 339 */
EXTERN int		Tcl_WriteObj(Tcl_Channel chan, Tcl_Obj *objPtr);
/* 340 */
EXTERN char *		Tcl_GetString(Tcl_Obj *objPtr);
/* 341 */
EXTERN CONST84_RETURN char * Tcl_GetDefaultEncodingDir(void);
/* 342 */
EXTERN void		Tcl_SetDefaultEncodingDir(const char *path);
/* 343 */
EXTERN void		Tcl_AlertNotifier(ClientData clientData);
/* 344 */
EXTERN void		Tcl_ServiceModeHook(int mode);
/* 345 */
EXTERN int		Tcl_UniCharIsAlnum(int ch);
/* 346 */
EXTERN int		Tcl_UniCharIsAlpha(int ch);
/* 347 */
EXTERN int		Tcl_UniCharIsDigit(int ch);
/* 348 */
EXTERN int		Tcl_UniCharIsLower(int ch);
/* 349 */
EXTERN int		Tcl_UniCharIsSpace(int ch);
/* 350 */
EXTERN int		Tcl_UniCharIsUpper(int ch);
/* 351 */
EXTERN int		Tcl_UniCharIsWordChar(int ch);
/* 352 */
EXTERN int		Tcl_UniCharLen(const Tcl_UniChar *uniStr);
/* 353 */
EXTERN int		Tcl_UniCharNcmp(const Tcl_UniChar *ucs,
				const Tcl_UniChar *uct,
				unsigned long numChars);
/* 354 */
EXTERN char *		Tcl_UniCharToUtfDString(const Tcl_UniChar *uniStr,
				int uniLength, Tcl_DString *dsPtr);
/* 355 */
EXTERN Tcl_UniChar *	Tcl_UtfToUniCharDString(const char *src, int length,
				Tcl_DString *dsPtr);
/* 356 */
EXTERN Tcl_RegExp	Tcl_GetRegExpFromObj(Tcl_Interp *interp,
				Tcl_Obj *patObj, int flags);
/* 357 */
EXTERN Tcl_Obj *	Tcl_EvalTokens(Tcl_Interp *interp,
				Tcl_Token *tokenPtr, int count);
/* 358 */
EXTERN void		Tcl_FreeParse(Tcl_Parse *parsePtr);
/* 359 */
EXTERN void		Tcl_LogCommandInfo(Tcl_Interp *interp,
				const char *script, const char *command,
				int length);
/* 360 */
EXTERN int		Tcl_ParseBraces(Tcl_Interp *interp,
				const char *start, int numBytes,
				Tcl_Parse *parsePtr, int append,
				CONST84 char **termPtr);
/* 361 */
EXTERN int		Tcl_ParseCommand(Tcl_Interp *interp,
				const char *start, int numBytes, int nested,
				Tcl_Parse *parsePtr);
/* 362 */
EXTERN int		Tcl_ParseExpr(Tcl_Interp *interp, const char *start,
				int numBytes, Tcl_Parse *parsePtr);
/* 363 */
EXTERN int		Tcl_ParseQuotedString(Tcl_Interp *interp,
				const char *start, int numBytes,
				Tcl_Parse *parsePtr, int append,
				CONST84 char **termPtr);
/* 364 */
EXTERN int		Tcl_ParseVarName(Tcl_Interp *interp,
				const char *start, int numBytes,
				Tcl_Parse *parsePtr, int append);
/* 365 */
EXTERN char *		Tcl_GetCwd(Tcl_Interp *interp, Tcl_DString *cwdPtr);
/* 366 */
EXTERN int		Tcl_Chdir(const char *dirName);
/* 367 */
EXTERN int		Tcl_Access(const char *path, int mode);
/* 368 */
EXTERN int		Tcl_Stat(const char *path, struct stat *bufPtr);
/* 369 */
EXTERN int		Tcl_UtfNcmp(const char *s1, const char *s2,
				unsigned long n);
/* 370 */
EXTERN int		Tcl_UtfNcasecmp(const char *s1, const char *s2,
				unsigned long n);
/* 371 */
EXTERN int		Tcl_StringCaseMatch(const char *str,
				const char *pattern, int nocase);
/* 372 */
EXTERN int		Tcl_UniCharIsControl(int ch);
/* 373 */
EXTERN int		Tcl_UniCharIsGraph(int ch);
/* 374 */
EXTERN int		Tcl_UniCharIsPrint(int ch);
/* 375 */
EXTERN int		Tcl_UniCharIsPunct(int ch);
/* 376 */
EXTERN int		Tcl_RegExpExecObj(Tcl_Interp *interp,
				Tcl_RegExp regexp, Tcl_Obj *textObj,
				int offset, int nmatches, int flags);
/* 377 */
EXTERN void		Tcl_RegExpGetInfo(Tcl_RegExp regexp,
				Tcl_RegExpInfo *infoPtr);
/* 378 */
EXTERN Tcl_Obj *	Tcl_NewUnicodeObj(const Tcl_UniChar *unicode,
				int numChars);
/* 379 */
EXTERN void		Tcl_SetUnicodeObj(Tcl_Obj *objPtr,
				const Tcl_UniChar *unicode, int numChars);
/* 380 */
EXTERN int		Tcl_GetCharLength(Tcl_Obj *objPtr);
/* 381 */
EXTERN Tcl_UniChar	Tcl_GetUniChar(Tcl_Obj *objPtr, int index);
/* 382 */
EXTERN Tcl_UniChar *	Tcl_GetUnicode(Tcl_Obj *objPtr);
/* 383 */
EXTERN Tcl_Obj *	Tcl_GetRange(Tcl_Obj *objPtr, int first, int last);
/* 384 */
EXTERN void		Tcl_AppendUnicodeToObj(Tcl_Obj *objPtr,
				const Tcl_UniChar *unicode, int length);
/* 385 */
EXTERN int		Tcl_RegExpMatchObj(Tcl_Interp *interp,
				Tcl_Obj *textObj, Tcl_Obj *patternObj);
/* 386 */
EXTERN void		Tcl_SetNotifier(Tcl_NotifierProcs *notifierProcPtr);
/* 387 */
EXTERN Tcl_Mutex *	Tcl_GetAllocMutex(void);
/* 388 */
EXTERN int		Tcl_GetChannelNames(Tcl_Interp *interp);
/* 389 */
EXTERN int		Tcl_GetChannelNamesEx(Tcl_Interp *interp,
				const char *pattern);
/* 390 */
EXTERN int		Tcl_ProcObjCmd(ClientData clientData,
				Tcl_Interp *interp, int objc,
				Tcl_Obj *const objv[]);
/* 391 */
EXTERN void		Tcl_ConditionFinalize(Tcl_Condition *condPtr);
/* 392 */
EXTERN void		Tcl_MutexFinalize(Tcl_Mutex *mutex);
/* 393 */
EXTERN int		Tcl_CreateThread(Tcl_ThreadId *idPtr,
				Tcl_ThreadCreateProc *proc,
				ClientData clientData, int stackSize,
				int flags);
/* 394 */
EXTERN int		Tcl_ReadRaw(Tcl_Channel chan, char *dst,
				int bytesToRead);
/* 395 */
EXTERN int		Tcl_WriteRaw(Tcl_Channel chan, const char *src,
				int srcLen);
/* 396 */
EXTERN Tcl_Channel	Tcl_GetTopChannel(Tcl_Channel chan);
/* 397 */
EXTERN int		Tcl_ChannelBuffered(Tcl_Channel chan);
/* 398 */
EXTERN CONST84_RETURN char * Tcl_ChannelName(
				const Tcl_ChannelType *chanTypePtr);
/* 399 */
EXTERN Tcl_ChannelTypeVersion Tcl_ChannelVersion(
				const Tcl_ChannelType *chanTypePtr);
/* 400 */
EXTERN Tcl_DriverBlockModeProc * Tcl_ChannelBlockModeProc(
				const Tcl_ChannelType *chanTypePtr);
/* 401 */
EXTERN Tcl_DriverCloseProc * Tcl_ChannelCloseProc(
				const Tcl_ChannelType *chanTypePtr);
/* 402 */
EXTERN Tcl_DriverClose2Proc * Tcl_ChannelClose2Proc(
				const Tcl_ChannelType *chanTypePtr);
/* 403 */
EXTERN Tcl_DriverInputProc * Tcl_ChannelInputProc(
				const Tcl_ChannelType *chanTypePtr);
/* 404 */
EXTERN Tcl_DriverOutputProc * Tcl_ChannelOutputProc(
				const Tcl_ChannelType *chanTypePtr);
/* 405 */
EXTERN Tcl_DriverSeekProc * Tcl_ChannelSeekProc(
				const Tcl_ChannelType *chanTypePtr);
/* 406 */
EXTERN Tcl_DriverSetOptionProc * Tcl_ChannelSetOptionProc(
				const Tcl_ChannelType *chanTypePtr);
/* 407 */
EXTERN Tcl_DriverGetOptionProc * Tcl_ChannelGetOptionProc(
				const Tcl_ChannelType *chanTypePtr);
/* 408 */
EXTERN Tcl_DriverWatchProc * Tcl_ChannelWatchProc(
				const Tcl_ChannelType *chanTypePtr);
/* 409 */
EXTERN Tcl_DriverGetHandleProc * Tcl_ChannelGetHandleProc(
				const Tcl_ChannelType *chanTypePtr);
/* 410 */
EXTERN Tcl_DriverFlushProc * Tcl_ChannelFlushProc(
				const Tcl_ChannelType *chanTypePtr);
/* 411 */
EXTERN Tcl_DriverHandlerProc * Tcl_ChannelHandlerProc(
				const Tcl_ChannelType *chanTypePtr);
/* 412 */
EXTERN int		Tcl_JoinThread(Tcl_ThreadId threadId, int *result);
/* 413 */
EXTERN int		Tcl_IsChannelShared(Tcl_Channel channel);
/* 414 */
EXTERN int		Tcl_IsChannelRegistered(Tcl_Interp *interp,
				Tcl_Channel channel);
/* 415 */
EXTERN void		Tcl_CutChannel(Tcl_Channel channel);
/* 416 */
EXTERN void		Tcl_SpliceChannel(Tcl_Channel channel);
/* 417 */
EXTERN void		Tcl_ClearChannelHandlers(Tcl_Channel channel);
/* 418 */
EXTERN int		Tcl_IsChannelExisting(const char *channelName);
/* 419 */
EXTERN int		Tcl_UniCharNcasecmp(const Tcl_UniChar *ucs,
				const Tcl_UniChar *uct,
				unsigned long numChars);
/* 420 */
EXTERN int		Tcl_UniCharCaseMatch(const Tcl_UniChar *uniStr,
				const Tcl_UniChar *uniPattern, int nocase);
/* 421 */
EXTERN Tcl_HashEntry *	Tcl_FindHashEntry(Tcl_HashTable *tablePtr,
				const void *key);
/* 422 */
EXTERN Tcl_HashEntry *	Tcl_CreateHashEntry(Tcl_HashTable *tablePtr,
				const void *key, int *newPtr);
/* 423 */
EXTERN void		Tcl_InitCustomHashTable(Tcl_HashTable *tablePtr,
				int keyType, const Tcl_HashKeyType *typePtr);
/* 424 */
EXTERN void		Tcl_InitObjHashTable(Tcl_HashTable *tablePtr);
/* 425 */
EXTERN ClientData	Tcl_CommandTraceInfo(Tcl_Interp *interp,
				const char *varName, int flags,
				Tcl_CommandTraceProc *procPtr,
				ClientData prevClientData);
/* 426 */
EXTERN int		Tcl_TraceCommand(Tcl_Interp *interp,
				const char *varName, int flags,
				Tcl_CommandTraceProc *proc,
				ClientData clientData);
/* 427 */
EXTERN void		Tcl_UntraceCommand(Tcl_Interp *interp,
				const char *varName, int flags,
				Tcl_CommandTraceProc *proc,
				ClientData clientData);
/* 428 */
EXTERN char *		Tcl_AttemptAlloc(unsigned int size);
/* 429 */
EXTERN char *		Tcl_AttemptDbCkalloc(unsigned int size,
				const char *file, int line);
/* 430 */
EXTERN char *		Tcl_AttemptRealloc(char *ptr, unsigned int size);
/* 431 */
EXTERN char *		Tcl_AttemptDbCkrealloc(char *ptr, unsigned int size,
				const char *file, int line);
/* 432 */
EXTERN int		Tcl_AttemptSetObjLength(Tcl_Obj *objPtr, int length);
/* 433 */
EXTERN Tcl_ThreadId	Tcl_GetChannelThread(Tcl_Channel channel);
/* 434 */
EXTERN Tcl_UniChar *	Tcl_GetUnicodeFromObj(Tcl_Obj *objPtr,
				int *lengthPtr);
/* 435 */
EXTERN int		Tcl_GetMathFuncInfo(Tcl_Interp *interp,
				const char *name, int *numArgsPtr,
				Tcl_ValueType **argTypesPtr,
				Tcl_MathProc **procPtr,
				ClientData *clientDataPtr);
/* 436 */
EXTERN Tcl_Obj *	Tcl_ListMathFuncs(Tcl_Interp *interp,
				const char *pattern);
/* 437 */
EXTERN Tcl_Obj *	Tcl_SubstObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
				int flags);
/* 438 */
EXTERN int		Tcl_DetachChannel(Tcl_Interp *interp,
				Tcl_Channel channel);
/* 439 */
EXTERN int		Tcl_IsStandardChannel(Tcl_Channel channel);
/* 440 */
EXTERN int		Tcl_FSCopyFile(Tcl_Obj *srcPathPtr,
				Tcl_Obj *destPathPtr);
/* 441 */
EXTERN int		Tcl_FSCopyDirectory(Tcl_Obj *srcPathPtr,
				Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr);
/* 442 */
EXTERN int		Tcl_FSCreateDirectory(Tcl_Obj *pathPtr);
/* 443 */
EXTERN int		Tcl_FSDeleteFile(Tcl_Obj *pathPtr);
/* 444 */
EXTERN int		Tcl_FSLoadFile(Tcl_Interp *interp, Tcl_Obj *pathPtr,
				const char *sym1, const char *sym2,
				Tcl_PackageInitProc **proc1Ptr,
				Tcl_PackageInitProc **proc2Ptr,
				Tcl_LoadHandle *handlePtr,
				Tcl_FSUnloadFileProc **unloadProcPtr);
/* 445 */
EXTERN int		Tcl_FSMatchInDirectory(Tcl_Interp *interp,
				Tcl_Obj *result, Tcl_Obj *pathPtr,
				const char *pattern, Tcl_GlobTypeData *types);
/* 446 */
EXTERN Tcl_Obj *	Tcl_FSLink(Tcl_Obj *pathPtr, Tcl_Obj *toPtr,
				int linkAction);
/* 447 */
EXTERN int		Tcl_FSRemoveDirectory(Tcl_Obj *pathPtr,
				int recursive, Tcl_Obj **errorPtr);
/* 448 */
EXTERN int		Tcl_FSRenameFile(Tcl_Obj *srcPathPtr,
				Tcl_Obj *destPathPtr);
/* 449 */
EXTERN int		Tcl_FSLstat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
/* 450 */
EXTERN int		Tcl_FSUtime(Tcl_Obj *pathPtr, struct utimbuf *tval);
/* 451 */
EXTERN int		Tcl_FSFileAttrsGet(Tcl_Interp *interp, int index,
				Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef);
/* 452 */
EXTERN int		Tcl_FSFileAttrsSet(Tcl_Interp *interp, int index,
				Tcl_Obj *pathPtr, Tcl_Obj *objPtr);
/* 453 */
EXTERN const char *CONST86 * Tcl_FSFileAttrStrings(Tcl_Obj *pathPtr,
				Tcl_Obj **objPtrRef);
/* 454 */
EXTERN int		Tcl_FSStat(Tcl_Obj *pathPtr, Tcl_StatBuf *buf);
/* 455 */
EXTERN int		Tcl_FSAccess(Tcl_Obj *pathPtr, int mode);
/* 456 */
EXTERN Tcl_Channel	Tcl_FSOpenFileChannel(Tcl_Interp *interp,
				Tcl_Obj *pathPtr, const char *modeString,
				int permissions);
/* 457 */
EXTERN Tcl_Obj *	Tcl_FSGetCwd(Tcl_Interp *interp);
/* 458 */
EXTERN int		Tcl_FSChdir(Tcl_Obj *pathPtr);
/* 459 */
EXTERN int		Tcl_FSConvertToPathType(Tcl_Interp *interp,
				Tcl_Obj *pathPtr);
/* 460 */
EXTERN Tcl_Obj *	Tcl_FSJoinPath(Tcl_Obj *listObj, int elements);
/* 461 */
EXTERN Tcl_Obj *	Tcl_FSSplitPath(Tcl_Obj *pathPtr, int *lenPtr);
/* 462 */
EXTERN int		Tcl_FSEqualPaths(Tcl_Obj *firstPtr,
				Tcl_Obj *secondPtr);
/* 463 */
EXTERN Tcl_Obj *	Tcl_FSGetNormalizedPath(Tcl_Interp *interp,
				Tcl_Obj *pathPtr);
/* 464 */
EXTERN Tcl_Obj *	Tcl_FSJoinToPath(Tcl_Obj *pathPtr, int objc,
				Tcl_Obj *const objv[]);
/* 465 */
EXTERN ClientData	Tcl_FSGetInternalRep(Tcl_Obj *pathPtr,
				const Tcl_Filesystem *fsPtr);
/* 466 */
EXTERN Tcl_Obj *	Tcl_FSGetTranslatedPath(Tcl_Interp *interp,
				Tcl_Obj *pathPtr);
/* 467 */
EXTERN int		Tcl_FSEvalFile(Tcl_Interp *interp, Tcl_Obj *fileName);
/* 468 */
EXTERN Tcl_Obj *	Tcl_FSNewNativePath(
				const Tcl_Filesystem *fromFilesystem,
				ClientData clientData);
/* 469 */
EXTERN const void *	Tcl_FSGetNativePath(Tcl_Obj *pathPtr);
/* 470 */
EXTERN Tcl_Obj *	Tcl_FSFileSystemInfo(Tcl_Obj *pathPtr);
/* 471 */
EXTERN Tcl_Obj *	Tcl_FSPathSeparator(Tcl_Obj *pathPtr);
/* 472 */
EXTERN Tcl_Obj *	Tcl_FSListVolumes(void);
/* 473 */
EXTERN int		Tcl_FSRegister(ClientData clientData,
				const Tcl_Filesystem *fsPtr);
/* 474 */
EXTERN int		Tcl_FSUnregister(const Tcl_Filesystem *fsPtr);
/* 475 */
EXTERN ClientData	Tcl_FSData(const Tcl_Filesystem *fsPtr);
/* 476 */
EXTERN const char *	Tcl_FSGetTranslatedStringPath(Tcl_Interp *interp,
				Tcl_Obj *pathPtr);
/* 477 */
EXTERN CONST86 Tcl_Filesystem * Tcl_FSGetFileSystemForPath(Tcl_Obj *pathPtr);
/* 478 */
EXTERN Tcl_PathType	Tcl_FSGetPathType(Tcl_Obj *pathPtr);
/* 479 */
EXTERN int		Tcl_OutputBuffered(Tcl_Channel chan);
/* 480 */
EXTERN void		Tcl_FSMountsChanged(const Tcl_Filesystem *fsPtr);
/* 481 */
EXTERN int		Tcl_EvalTokensStandard(Tcl_Interp *interp,
				Tcl_Token *tokenPtr, int count);
/* 482 */
EXTERN void		Tcl_GetTime(Tcl_Time *timeBuf);
/* 483 */
EXTERN Tcl_Trace	Tcl_CreateObjTrace(Tcl_Interp *interp, int level,
				int flags, Tcl_CmdObjTraceProc *objProc,
				ClientData clientData,
				Tcl_CmdObjTraceDeleteProc *delProc);
/* 484 */
EXTERN int		Tcl_GetCommandInfoFromToken(Tcl_Command token,
				Tcl_CmdInfo *infoPtr);
/* 485 */
EXTERN int		Tcl_SetCommandInfoFromToken(Tcl_Command token,
				const Tcl_CmdInfo *infoPtr);
/* 486 */
EXTERN Tcl_Obj *	Tcl_DbNewWideIntObj(Tcl_WideInt wideValue,
				const char *file, int line);
/* 487 */
EXTERN int		Tcl_GetWideIntFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, Tcl_WideInt *widePtr);
/* 488 */
EXTERN Tcl_Obj *	Tcl_NewWideIntObj(Tcl_WideInt wideValue);
/* 489 */
EXTERN void		Tcl_SetWideIntObj(Tcl_Obj *objPtr,
				Tcl_WideInt wideValue);
/* 490 */
EXTERN Tcl_StatBuf *	Tcl_AllocStatBuf(void);
/* 491 */
EXTERN Tcl_WideInt	Tcl_Seek(Tcl_Channel chan, Tcl_WideInt offset,
				int mode);
/* 492 */
EXTERN Tcl_WideInt	Tcl_Tell(Tcl_Channel chan);
/* 493 */
EXTERN Tcl_DriverWideSeekProc * Tcl_ChannelWideSeekProc(
				const Tcl_ChannelType *chanTypePtr);
/* 494 */
EXTERN int		Tcl_DictObjPut(Tcl_Interp *interp, Tcl_Obj *dictPtr,
				Tcl_Obj *keyPtr, Tcl_Obj *valuePtr);
/* 495 */
EXTERN int		Tcl_DictObjGet(Tcl_Interp *interp, Tcl_Obj *dictPtr,
				Tcl_Obj *keyPtr, Tcl_Obj **valuePtrPtr);
/* 496 */
EXTERN int		Tcl_DictObjRemove(Tcl_Interp *interp,
				Tcl_Obj *dictPtr, Tcl_Obj *keyPtr);
/* 497 */
EXTERN int		Tcl_DictObjSize(Tcl_Interp *interp, Tcl_Obj *dictPtr,
				int *sizePtr);
/* 498 */
EXTERN int		Tcl_DictObjFirst(Tcl_Interp *interp,
				Tcl_Obj *dictPtr, Tcl_DictSearch *searchPtr,
				Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr,
				int *donePtr);
/* 499 */
EXTERN void		Tcl_DictObjNext(Tcl_DictSearch *searchPtr,
				Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr,
				int *donePtr);
/* 500 */
EXTERN void		Tcl_DictObjDone(Tcl_DictSearch *searchPtr);
/* 501 */
EXTERN int		Tcl_DictObjPutKeyList(Tcl_Interp *interp,
				Tcl_Obj *dictPtr, int keyc,
				Tcl_Obj *const *keyv, Tcl_Obj *valuePtr);
/* 502 */
EXTERN int		Tcl_DictObjRemoveKeyList(Tcl_Interp *interp,
				Tcl_Obj *dictPtr, int keyc,
				Tcl_Obj *const *keyv);
/* 503 */
EXTERN Tcl_Obj *	Tcl_NewDictObj(void);
/* 504 */
EXTERN Tcl_Obj *	Tcl_DbNewDictObj(const char *file, int line);
/* 505 */
EXTERN void		Tcl_RegisterConfig(Tcl_Interp *interp,
				const char *pkgName,
				const Tcl_Config *configuration,
				const char *valEncoding);
/* 506 */
EXTERN Tcl_Namespace *	Tcl_CreateNamespace(Tcl_Interp *interp,
				const char *name, ClientData clientData,
				Tcl_NamespaceDeleteProc *deleteProc);
/* 507 */
EXTERN void		Tcl_DeleteNamespace(Tcl_Namespace *nsPtr);
/* 508 */
EXTERN int		Tcl_AppendExportList(Tcl_Interp *interp,
				Tcl_Namespace *nsPtr, Tcl_Obj *objPtr);
/* 509 */
EXTERN int		Tcl_Export(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
				const char *pattern, int resetListFirst);
/* 510 */
EXTERN int		Tcl_Import(Tcl_Interp *interp, Tcl_Namespace *nsPtr,
				const char *pattern, int allowOverwrite);
/* 511 */
EXTERN int		Tcl_ForgetImport(Tcl_Interp *interp,
				Tcl_Namespace *nsPtr, const char *pattern);
/* 512 */
EXTERN Tcl_Namespace *	Tcl_GetCurrentNamespace(Tcl_Interp *interp);
/* 513 */
EXTERN Tcl_Namespace *	Tcl_GetGlobalNamespace(Tcl_Interp *interp);
/* 514 */
EXTERN Tcl_Namespace *	Tcl_FindNamespace(Tcl_Interp *interp,
				const char *name,
				Tcl_Namespace *contextNsPtr, int flags);
/* 515 */
EXTERN Tcl_Command	Tcl_FindCommand(Tcl_Interp *interp, const char *name,
				Tcl_Namespace *contextNsPtr, int flags);
/* 516 */
EXTERN Tcl_Command	Tcl_GetCommandFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr);
/* 517 */
EXTERN void		Tcl_GetCommandFullName(Tcl_Interp *interp,
				Tcl_Command command, Tcl_Obj *objPtr);
/* 518 */
EXTERN int		Tcl_FSEvalFileEx(Tcl_Interp *interp,
				Tcl_Obj *fileName, const char *encodingName);
/* 519 */
EXTERN Tcl_ExitProc *	Tcl_SetExitProc(Tcl_ExitProc *proc);
/* 520 */
EXTERN void		Tcl_LimitAddHandler(Tcl_Interp *interp, int type,
				Tcl_LimitHandlerProc *handlerProc,
				ClientData clientData,
				Tcl_LimitHandlerDeleteProc *deleteProc);
/* 521 */
EXTERN void		Tcl_LimitRemoveHandler(Tcl_Interp *interp, int type,
				Tcl_LimitHandlerProc *handlerProc,
				ClientData clientData);
/* 522 */
EXTERN int		Tcl_LimitReady(Tcl_Interp *interp);
/* 523 */
EXTERN int		Tcl_LimitCheck(Tcl_Interp *interp);
/* 524 */
EXTERN int		Tcl_LimitExceeded(Tcl_Interp *interp);
/* 525 */
EXTERN void		Tcl_LimitSetCommands(Tcl_Interp *interp,
				int commandLimit);
/* 526 */
EXTERN void		Tcl_LimitSetTime(Tcl_Interp *interp,
				Tcl_Time *timeLimitPtr);
/* 527 */
EXTERN void		Tcl_LimitSetGranularity(Tcl_Interp *interp, int type,
				int granularity);
/* 528 */
EXTERN int		Tcl_LimitTypeEnabled(Tcl_Interp *interp, int type);
/* 529 */
EXTERN int		Tcl_LimitTypeExceeded(Tcl_Interp *interp, int type);
/* 530 */
EXTERN void		Tcl_LimitTypeSet(Tcl_Interp *interp, int type);
/* 531 */
EXTERN void		Tcl_LimitTypeReset(Tcl_Interp *interp, int type);
/* 532 */
EXTERN int		Tcl_LimitGetCommands(Tcl_Interp *interp);
/* 533 */
EXTERN void		Tcl_LimitGetTime(Tcl_Interp *interp,
				Tcl_Time *timeLimitPtr);
/* 534 */
EXTERN int		Tcl_LimitGetGranularity(Tcl_Interp *interp, int type);
/* 535 */
EXTERN Tcl_InterpState	Tcl_SaveInterpState(Tcl_Interp *interp, int status);
/* 536 */
EXTERN int		Tcl_RestoreInterpState(Tcl_Interp *interp,
				Tcl_InterpState state);
/* 537 */
EXTERN void		Tcl_DiscardInterpState(Tcl_InterpState state);
/* 538 */
EXTERN int		Tcl_SetReturnOptions(Tcl_Interp *interp,
				Tcl_Obj *options);
/* 539 */
EXTERN Tcl_Obj *	Tcl_GetReturnOptions(Tcl_Interp *interp, int result);
/* 540 */
EXTERN int		Tcl_IsEnsemble(Tcl_Command token);
/* 541 */
EXTERN Tcl_Command	Tcl_CreateEnsemble(Tcl_Interp *interp,
				const char *name,
				Tcl_Namespace *namespacePtr, int flags);
/* 542 */
EXTERN Tcl_Command	Tcl_FindEnsemble(Tcl_Interp *interp,
				Tcl_Obj *cmdNameObj, int flags);
/* 543 */
EXTERN int		Tcl_SetEnsembleSubcommandList(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj *subcmdList);
/* 544 */
EXTERN int		Tcl_SetEnsembleMappingDict(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj *mapDict);
/* 545 */
EXTERN int		Tcl_SetEnsembleUnknownHandler(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj *unknownList);
/* 546 */
EXTERN int		Tcl_SetEnsembleFlags(Tcl_Interp *interp,
				Tcl_Command token, int flags);
/* 547 */
EXTERN int		Tcl_GetEnsembleSubcommandList(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj **subcmdListPtr);
/* 548 */
EXTERN int		Tcl_GetEnsembleMappingDict(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj **mapDictPtr);
/* 549 */
EXTERN int		Tcl_GetEnsembleUnknownHandler(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj **unknownListPtr);
/* 550 */
EXTERN int		Tcl_GetEnsembleFlags(Tcl_Interp *interp,
				Tcl_Command token, int *flagsPtr);
/* 551 */
EXTERN int		Tcl_GetEnsembleNamespace(Tcl_Interp *interp,
				Tcl_Command token,
				Tcl_Namespace **namespacePtrPtr);
/* 552 */
EXTERN void		Tcl_SetTimeProc(Tcl_GetTimeProc *getProc,
				Tcl_ScaleTimeProc *scaleProc,
				ClientData clientData);
/* 553 */
EXTERN void		Tcl_QueryTimeProc(Tcl_GetTimeProc **getProc,
				Tcl_ScaleTimeProc **scaleProc,
				ClientData *clientData);
/* 554 */
EXTERN Tcl_DriverThreadActionProc * Tcl_ChannelThreadActionProc(
				const Tcl_ChannelType *chanTypePtr);
/* 555 */
EXTERN Tcl_Obj *	Tcl_NewBignumObj(mp_int *value);
/* 556 */
EXTERN Tcl_Obj *	Tcl_DbNewBignumObj(mp_int *value, const char *file,
				int line);
/* 557 */
EXTERN void		Tcl_SetBignumObj(Tcl_Obj *obj, mp_int *value);
/* 558 */
EXTERN int		Tcl_GetBignumFromObj(Tcl_Interp *interp,
				Tcl_Obj *obj, mp_int *value);
/* 559 */
EXTERN int		Tcl_TakeBignumFromObj(Tcl_Interp *interp,
				Tcl_Obj *obj, mp_int *value);
/* 560 */
EXTERN int		Tcl_TruncateChannel(Tcl_Channel chan,
				Tcl_WideInt length);
/* 561 */
EXTERN Tcl_DriverTruncateProc * Tcl_ChannelTruncateProc(
				const Tcl_ChannelType *chanTypePtr);
/* 562 */
EXTERN void		Tcl_SetChannelErrorInterp(Tcl_Interp *interp,
				Tcl_Obj *msg);
/* 563 */
EXTERN void		Tcl_GetChannelErrorInterp(Tcl_Interp *interp,
				Tcl_Obj **msg);
/* 564 */
EXTERN void		Tcl_SetChannelError(Tcl_Channel chan, Tcl_Obj *msg);
/* 565 */
EXTERN void		Tcl_GetChannelError(Tcl_Channel chan, Tcl_Obj **msg);
/* 566 */
EXTERN int		Tcl_InitBignumFromDouble(Tcl_Interp *interp,
				double initval, mp_int *toInit);
/* 567 */
EXTERN Tcl_Obj *	Tcl_GetNamespaceUnknownHandler(Tcl_Interp *interp,
				Tcl_Namespace *nsPtr);
/* 568 */
EXTERN int		Tcl_SetNamespaceUnknownHandler(Tcl_Interp *interp,
				Tcl_Namespace *nsPtr, Tcl_Obj *handlerPtr);
/* 569 */
EXTERN int		Tcl_GetEncodingFromObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, Tcl_Encoding *encodingPtr);
/* 570 */
EXTERN Tcl_Obj *	Tcl_GetEncodingSearchPath(void);
/* 571 */
EXTERN int		Tcl_SetEncodingSearchPath(Tcl_Obj *searchPath);
/* 572 */
EXTERN const char *	Tcl_GetEncodingNameFromEnvironment(
				Tcl_DString *bufPtr);
/* 573 */
EXTERN int		Tcl_PkgRequireProc(Tcl_Interp *interp,
				const char *name, int objc,
				Tcl_Obj *const objv[], void *clientDataPtr);
/* 574 */
EXTERN void		Tcl_AppendObjToErrorInfo(Tcl_Interp *interp,
				Tcl_Obj *objPtr);
/* 575 */
EXTERN void		Tcl_AppendLimitedToObj(Tcl_Obj *objPtr,
				const char *bytes, int length, int limit,
				const char *ellipsis);
/* 576 */
EXTERN Tcl_Obj *	Tcl_Format(Tcl_Interp *interp, const char *format,
				int objc, Tcl_Obj *const objv[]);
/* 577 */
EXTERN int		Tcl_AppendFormatToObj(Tcl_Interp *interp,
				Tcl_Obj *objPtr, const char *format,
				int objc, Tcl_Obj *const objv[]);
/* 578 */
EXTERN Tcl_Obj *	Tcl_ObjPrintf(const char *format, ...) TCL_FORMAT_PRINTF(1, 2);
/* 579 */
EXTERN void		Tcl_AppendPrintfToObj(Tcl_Obj *objPtr,
				const char *format, ...) TCL_FORMAT_PRINTF(2, 3);
/* 580 */
EXTERN int		Tcl_CancelEval(Tcl_Interp *interp,
				Tcl_Obj *resultObjPtr, ClientData clientData,
				int flags);
/* 581 */
EXTERN int		Tcl_Canceled(Tcl_Interp *interp, int flags);
/* 582 */
EXTERN int		Tcl_CreatePipe(Tcl_Interp *interp,
				Tcl_Channel *rchan, Tcl_Channel *wchan,
				int flags);
/* 583 */
EXTERN Tcl_Command	Tcl_NRCreateCommand(Tcl_Interp *interp,
				const char *cmdName, Tcl_ObjCmdProc *proc,
				Tcl_ObjCmdProc *nreProc,
				ClientData clientData,
				Tcl_CmdDeleteProc *deleteProc);
/* 584 */
EXTERN int		Tcl_NREvalObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
				int flags);
/* 585 */
EXTERN int		Tcl_NREvalObjv(Tcl_Interp *interp, int objc,
				Tcl_Obj *const objv[], int flags);
/* 586 */
EXTERN int		Tcl_NRCmdSwap(Tcl_Interp *interp, Tcl_Command cmd,
				int objc, Tcl_Obj *const objv[], int flags);
/* 587 */
EXTERN void		Tcl_NRAddCallback(Tcl_Interp *interp,
				Tcl_NRPostProc *postProcPtr,
				ClientData data0, ClientData data1,
				ClientData data2, ClientData data3);
/* 588 */
EXTERN int		Tcl_NRCallObjProc(Tcl_Interp *interp,
				Tcl_ObjCmdProc *objProc,
				ClientData clientData, int objc,
				Tcl_Obj *const objv[]);
/* 589 */
EXTERN unsigned		Tcl_GetFSDeviceFromStat(const Tcl_StatBuf *statPtr);
/* 590 */
EXTERN unsigned		Tcl_GetFSInodeFromStat(const Tcl_StatBuf *statPtr);
/* 591 */
EXTERN unsigned		Tcl_GetModeFromStat(const Tcl_StatBuf *statPtr);
/* 592 */
EXTERN int		Tcl_GetLinkCountFromStat(const Tcl_StatBuf *statPtr);
/* 593 */
EXTERN int		Tcl_GetUserIdFromStat(const Tcl_StatBuf *statPtr);
/* 594 */
EXTERN int		Tcl_GetGroupIdFromStat(const Tcl_StatBuf *statPtr);
/* 595 */
EXTERN int		Tcl_GetDeviceTypeFromStat(const Tcl_StatBuf *statPtr);
/* 596 */
EXTERN Tcl_WideInt	Tcl_GetAccessTimeFromStat(const Tcl_StatBuf *statPtr);
/* 597 */
EXTERN Tcl_WideInt	Tcl_GetModificationTimeFromStat(
				const Tcl_StatBuf *statPtr);
/* 598 */
EXTERN Tcl_WideInt	Tcl_GetChangeTimeFromStat(const Tcl_StatBuf *statPtr);
/* 599 */
EXTERN Tcl_WideUInt	Tcl_GetSizeFromStat(const Tcl_StatBuf *statPtr);
/* 600 */
EXTERN Tcl_WideUInt	Tcl_GetBlocksFromStat(const Tcl_StatBuf *statPtr);
/* 601 */
EXTERN unsigned		Tcl_GetBlockSizeFromStat(const Tcl_StatBuf *statPtr);
/* 602 */
EXTERN int		Tcl_SetEnsembleParameterList(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj *paramList);
/* 603 */
EXTERN int		Tcl_GetEnsembleParameterList(Tcl_Interp *interp,
				Tcl_Command token, Tcl_Obj **paramListPtr);
/* 604 */
EXTERN int		Tcl_ParseArgsObjv(Tcl_Interp *interp,
				const Tcl_ArgvInfo *argTable, int *objcPtr,
				Tcl_Obj *const *objv, Tcl_Obj ***remObjv);
/* 605 */
EXTERN int		Tcl_GetErrorLine(Tcl_Interp *interp);
/* 606 */
EXTERN void		Tcl_SetErrorLine(Tcl_Interp *interp, int lineNum);
/* 607 */
EXTERN void		Tcl_TransferResult(Tcl_Interp *sourceInterp,
				int result, Tcl_Interp *targetInterp);
/* 608 */
EXTERN int		Tcl_InterpActive(Tcl_Interp *interp);
/* 609 */
EXTERN void		Tcl_BackgroundException(Tcl_Interp *interp, int code);
/* 610 */
EXTERN int		Tcl_ZlibDeflate(Tcl_Interp *interp, int format,
				Tcl_Obj *data, int level,
				Tcl_Obj *gzipHeaderDictObj);
/* 611 */
EXTERN int		Tcl_ZlibInflate(Tcl_Interp *interp, int format,
				Tcl_Obj *data, int buffersize,
				Tcl_Obj *gzipHeaderDictObj);
/* 612 */
EXTERN unsigned int	Tcl_ZlibCRC32(unsigned int crc,
				const unsigned char *buf, int len);
/* 613 */
EXTERN unsigned int	Tcl_ZlibAdler32(unsigned int adler,
				const unsigned char *buf, int len);
/* 614 */
EXTERN int		Tcl_ZlibStreamInit(Tcl_Interp *interp, int mode,
				int format, int level, Tcl_Obj *dictObj,
				Tcl_ZlibStream *zshandle);
/* 615 */
EXTERN Tcl_Obj *	Tcl_ZlibStreamGetCommandName(Tcl_ZlibStream zshandle);
/* 616 */
EXTERN int		Tcl_ZlibStreamEof(Tcl_ZlibStream zshandle);
/* 617 */
EXTERN int		Tcl_ZlibStreamChecksum(Tcl_ZlibStream zshandle);
/* 618 */
EXTERN int		Tcl_ZlibStreamPut(Tcl_ZlibStream zshandle,
				Tcl_Obj *data, int flush);
/* 619 */
EXTERN int		Tcl_ZlibStreamGet(Tcl_ZlibStream zshandle,
				Tcl_Obj *data, int count);
/* 620 */
EXTERN int		Tcl_ZlibStreamClose(Tcl_ZlibStream zshandle);
/* 621 */
EXTERN int		Tcl_ZlibStreamReset(Tcl_ZlibStream zshandle);
/* 622 */
EXTERN void		Tcl_SetStartupScript(Tcl_Obj *path,
				const char *encoding);
/* 623 */
EXTERN Tcl_Obj *	Tcl_GetStartupScript(const char **encodingPtr);
/* 624 */
EXTERN int		Tcl_CloseEx(Tcl_Interp *interp, Tcl_Channel chan,
				int flags);
/* 625 */
EXTERN int		Tcl_NRExprObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
				Tcl_Obj *resultPtr);
/* 626 */
EXTERN int		Tcl_NRSubstObj(Tcl_Interp *interp, Tcl_Obj *objPtr,
				int flags);
/* 627 */
EXTERN int		Tcl_LoadFile(Tcl_Interp *interp, Tcl_Obj *pathPtr,
				const char *const symv[], int flags,
				void *procPtrs, Tcl_LoadHandle *handlePtr);
/* 628 */
EXTERN void *		Tcl_FindSymbol(Tcl_Interp *interp,
				Tcl_LoadHandle handle, const char *symbol);
/* 629 */
EXTERN int		Tcl_FSUnloadFile(Tcl_Interp *interp,
				Tcl_LoadHandle handlePtr);
/* 630 */
EXTERN void		Tcl_ZlibStreamSetCompressionDictionary(
				Tcl_ZlibStream zhandle,
				Tcl_Obj *compressionDictionaryObj);

typedef struct {
    const struct TclPlatStubs *tclPlatStubs;
    const struct TclIntStubs *tclIntStubs;
    const struct TclIntPlatStubs *tclIntPlatStubs;
} TclStubHooks;

typedef struct TclStubs {
    int magic;
    const TclStubHooks *hooks;

    int (*tcl_PkgProvideEx) (Tcl_Interp *interp, const char *name, const char *version, const void *clientData); /* 0 */
    CONST84_RETURN char * (*tcl_PkgRequireEx) (Tcl_Interp *interp, const char *name, const char *version, int exact, void *clientDataPtr); /* 1 */
    void (*tcl_Panic) (const char *format, ...) TCL_FORMAT_PRINTF(1, 2); /* 2 */
    char * (*tcl_Alloc) (unsigned int size); /* 3 */
    void (*tcl_Free) (char *ptr); /* 4 */
    char * (*tcl_Realloc) (char *ptr, unsigned int size); /* 5 */
    char * (*tcl_DbCkalloc) (unsigned int size, const char *file, int line); /* 6 */
    void (*tcl_DbCkfree) (char *ptr, const char *file, int line); /* 7 */
    char * (*tcl_DbCkrealloc) (char *ptr, unsigned int size, const char *file, int line); /* 8 */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
    void (*tcl_CreateFileHandler) (int fd, int mask, Tcl_FileProc *proc, ClientData clientData); /* 9 */
#endif /* UNIX */
#if defined(__WIN32__) /* WIN */
    void (*reserved9)(void);
#endif /* WIN */
#ifdef MAC_OSX_TCL /* MACOSX */
    void (*tcl_CreateFileHandler) (int fd, int mask, Tcl_FileProc *proc, ClientData clientData); /* 9 */
#endif /* MACOSX */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
    void (*tcl_DeleteFileHandler) (int fd); /* 10 */
#endif /* UNIX */
#if defined(__WIN32__) /* WIN */
    void (*reserved10)(void);
#endif /* WIN */
#ifdef MAC_OSX_TCL /* MACOSX */
    void (*tcl_DeleteFileHandler) (int fd); /* 10 */
#endif /* MACOSX */
    void (*tcl_SetTimer) (const Tcl_Time *timePtr); /* 11 */
    void (*tcl_Sleep) (int ms); /* 12 */
    int (*tcl_WaitForEvent) (const Tcl_Time *timePtr); /* 13 */
    int (*tcl_AppendAllObjTypes) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 14 */
    void (*tcl_AppendStringsToObj) (Tcl_Obj *objPtr, ...); /* 15 */
    void (*tcl_AppendToObj) (Tcl_Obj *objPtr, const char *bytes, int length); /* 16 */
    Tcl_Obj * (*tcl_ConcatObj) (int objc, Tcl_Obj *const objv[]); /* 17 */
    int (*tcl_ConvertToType) (Tcl_Interp *interp, Tcl_Obj *objPtr, const Tcl_ObjType *typePtr); /* 18 */
    void (*tcl_DbDecrRefCount) (Tcl_Obj *objPtr, const char *file, int line); /* 19 */
    void (*tcl_DbIncrRefCount) (Tcl_Obj *objPtr, const char *file, int line); /* 20 */
    int (*tcl_DbIsShared) (Tcl_Obj *objPtr, const char *file, int line); /* 21 */
    Tcl_Obj * (*tcl_DbNewBooleanObj) (int boolValue, const char *file, int line); /* 22 */
    Tcl_Obj * (*tcl_DbNewByteArrayObj) (const unsigned char *bytes, int length, const char *file, int line); /* 23 */
    Tcl_Obj * (*tcl_DbNewDoubleObj) (double doubleValue, const char *file, int line); /* 24 */
    Tcl_Obj * (*tcl_DbNewListObj) (int objc, Tcl_Obj *const *objv, const char *file, int line); /* 25 */
    Tcl_Obj * (*tcl_DbNewLongObj) (long longValue, const char *file, int line); /* 26 */
    Tcl_Obj * (*tcl_DbNewObj) (const char *file, int line); /* 27 */
    Tcl_Obj * (*tcl_DbNewStringObj) (const char *bytes, int length, const char *file, int line); /* 28 */
    Tcl_Obj * (*tcl_DuplicateObj) (Tcl_Obj *objPtr); /* 29 */
    void (*tclFreeObj) (Tcl_Obj *objPtr); /* 30 */
    int (*tcl_GetBoolean) (Tcl_Interp *interp, const char *src, int *boolPtr); /* 31 */
    int (*tcl_GetBooleanFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int *boolPtr); /* 32 */
    unsigned char * (*tcl_GetByteArrayFromObj) (Tcl_Obj *objPtr, int *lengthPtr); /* 33 */
    int (*tcl_GetDouble) (Tcl_Interp *interp, const char *src, double *doublePtr); /* 34 */
    int (*tcl_GetDoubleFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, double *doublePtr); /* 35 */
    int (*tcl_GetIndexFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, CONST84 char *const *tablePtr, const char *msg, int flags, int *indexPtr); /* 36 */
    int (*tcl_GetInt) (Tcl_Interp *interp, const char *src, int *intPtr); /* 37 */
    int (*tcl_GetIntFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int *intPtr); /* 38 */
    int (*tcl_GetLongFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, long *longPtr); /* 39 */
    CONST86 Tcl_ObjType * (*tcl_GetObjType) (const char *typeName); /* 40 */
    char * (*tcl_GetStringFromObj) (Tcl_Obj *objPtr, int *lengthPtr); /* 41 */
    void (*tcl_InvalidateStringRep) (Tcl_Obj *objPtr); /* 42 */
    int (*tcl_ListObjAppendList) (Tcl_Interp *interp, Tcl_Obj *listPtr, Tcl_Obj *elemListPtr); /* 43 */
    int (*tcl_ListObjAppendElement) (Tcl_Interp *interp, Tcl_Obj *listPtr, Tcl_Obj *objPtr); /* 44 */
    int (*tcl_ListObjGetElements) (Tcl_Interp *interp, Tcl_Obj *listPtr, int *objcPtr, Tcl_Obj ***objvPtr); /* 45 */
    int (*tcl_ListObjIndex) (Tcl_Interp *interp, Tcl_Obj *listPtr, int index, Tcl_Obj **objPtrPtr); /* 46 */
    int (*tcl_ListObjLength) (Tcl_Interp *interp, Tcl_Obj *listPtr, int *lengthPtr); /* 47 */
    int (*tcl_ListObjReplace) (Tcl_Interp *interp, Tcl_Obj *listPtr, int first, int count, int objc, Tcl_Obj *const objv[]); /* 48 */
    Tcl_Obj * (*tcl_NewBooleanObj) (int boolValue); /* 49 */
    Tcl_Obj * (*tcl_NewByteArrayObj) (const unsigned char *bytes, int length); /* 50 */
    Tcl_Obj * (*tcl_NewDoubleObj) (double doubleValue); /* 51 */
    Tcl_Obj * (*tcl_NewIntObj) (int intValue); /* 52 */
    Tcl_Obj * (*tcl_NewListObj) (int objc, Tcl_Obj *const objv[]); /* 53 */
    Tcl_Obj * (*tcl_NewLongObj) (long longValue); /* 54 */
    Tcl_Obj * (*tcl_NewObj) (void); /* 55 */
    Tcl_Obj * (*tcl_NewStringObj) (const char *bytes, int length); /* 56 */
    void (*tcl_SetBooleanObj) (Tcl_Obj *objPtr, int boolValue); /* 57 */
    unsigned char * (*tcl_SetByteArrayLength) (Tcl_Obj *objPtr, int length); /* 58 */
    void (*tcl_SetByteArrayObj) (Tcl_Obj *objPtr, const unsigned char *bytes, int length); /* 59 */
    void (*tcl_SetDoubleObj) (Tcl_Obj *objPtr, double doubleValue); /* 60 */
    void (*tcl_SetIntObj) (Tcl_Obj *objPtr, int intValue); /* 61 */
    void (*tcl_SetListObj) (Tcl_Obj *objPtr, int objc, Tcl_Obj *const objv[]); /* 62 */
    void (*tcl_SetLongObj) (Tcl_Obj *objPtr, long longValue); /* 63 */
    void (*tcl_SetObjLength) (Tcl_Obj *objPtr, int length); /* 64 */
    void (*tcl_SetStringObj) (Tcl_Obj *objPtr, const char *bytes, int length); /* 65 */
    void (*tcl_AddErrorInfo) (Tcl_Interp *interp, const char *message); /* 66 */
    void (*tcl_AddObjErrorInfo) (Tcl_Interp *interp, const char *message, int length); /* 67 */
    void (*tcl_AllowExceptions) (Tcl_Interp *interp); /* 68 */
    void (*tcl_AppendElement) (Tcl_Interp *interp, const char *element); /* 69 */
    void (*tcl_AppendResult) (Tcl_Interp *interp, ...); /* 70 */
    Tcl_AsyncHandler (*tcl_AsyncCreate) (Tcl_AsyncProc *proc, ClientData clientData); /* 71 */
    void (*tcl_AsyncDelete) (Tcl_AsyncHandler async); /* 72 */
    int (*tcl_AsyncInvoke) (Tcl_Interp *interp, int code); /* 73 */
    void (*tcl_AsyncMark) (Tcl_AsyncHandler async); /* 74 */
    int (*tcl_AsyncReady) (void); /* 75 */
    void (*tcl_BackgroundError) (Tcl_Interp *interp); /* 76 */
    char (*tcl_Backslash) (const char *src, int *readPtr); /* 77 */
    int (*tcl_BadChannelOption) (Tcl_Interp *interp, const char *optionName, const char *optionList); /* 78 */
    void (*tcl_CallWhenDeleted) (Tcl_Interp *interp, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 79 */
    void (*tcl_CancelIdleCall) (Tcl_IdleProc *idleProc, ClientData clientData); /* 80 */
    int (*tcl_Close) (Tcl_Interp *interp, Tcl_Channel chan); /* 81 */
    int (*tcl_CommandComplete) (const char *cmd); /* 82 */
    char * (*tcl_Concat) (int argc, CONST84 char *const *argv); /* 83 */
    int (*tcl_ConvertElement) (const char *src, char *dst, int flags); /* 84 */
    int (*tcl_ConvertCountedElement) (const char *src, int length, char *dst, int flags); /* 85 */
    int (*tcl_CreateAlias) (Tcl_Interp *slave, const char *slaveCmd, Tcl_Interp *target, const char *targetCmd, int argc, CONST84 char *const *argv); /* 86 */
    int (*tcl_CreateAliasObj) (Tcl_Interp *slave, const char *slaveCmd, Tcl_Interp *target, const char *targetCmd, int objc, Tcl_Obj *const objv[]); /* 87 */
    Tcl_Channel (*tcl_CreateChannel) (const Tcl_ChannelType *typePtr, const char *chanName, ClientData instanceData, int mask); /* 88 */
    void (*tcl_CreateChannelHandler) (Tcl_Channel chan, int mask, Tcl_ChannelProc *proc, ClientData clientData); /* 89 */
    void (*tcl_CreateCloseHandler) (Tcl_Channel chan, Tcl_CloseProc *proc, ClientData clientData); /* 90 */
    Tcl_Command (*tcl_CreateCommand) (Tcl_Interp *interp, const char *cmdName, Tcl_CmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc); /* 91 */
    void (*tcl_CreateEventSource) (Tcl_EventSetupProc *setupProc, Tcl_EventCheckProc *checkProc, ClientData clientData); /* 92 */
    void (*tcl_CreateExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 93 */
    Tcl_Interp * (*tcl_CreateInterp) (void); /* 94 */
    void (*tcl_CreateMathFunc) (Tcl_Interp *interp, const char *name, int numArgs, Tcl_ValueType *argTypes, Tcl_MathProc *proc, ClientData clientData); /* 95 */
    Tcl_Command (*tcl_CreateObjCommand) (Tcl_Interp *interp, const char *cmdName, Tcl_ObjCmdProc *proc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc); /* 96 */
    Tcl_Interp * (*tcl_CreateSlave) (Tcl_Interp *interp, const char *slaveName, int isSafe); /* 97 */
    Tcl_TimerToken (*tcl_CreateTimerHandler) (int milliseconds, Tcl_TimerProc *proc, ClientData clientData); /* 98 */
    Tcl_Trace (*tcl_CreateTrace) (Tcl_Interp *interp, int level, Tcl_CmdTraceProc *proc, ClientData clientData); /* 99 */
    void (*tcl_DeleteAssocData) (Tcl_Interp *interp, const char *name); /* 100 */
    void (*tcl_DeleteChannelHandler) (Tcl_Channel chan, Tcl_ChannelProc *proc, ClientData clientData); /* 101 */
    void (*tcl_DeleteCloseHandler) (Tcl_Channel chan, Tcl_CloseProc *proc, ClientData clientData); /* 102 */
    int (*tcl_DeleteCommand) (Tcl_Interp *interp, const char *cmdName); /* 103 */
    int (*tcl_DeleteCommandFromToken) (Tcl_Interp *interp, Tcl_Command command); /* 104 */
    void (*tcl_DeleteEvents) (Tcl_EventDeleteProc *proc, ClientData clientData); /* 105 */
    void (*tcl_DeleteEventSource) (Tcl_EventSetupProc *setupProc, Tcl_EventCheckProc *checkProc, ClientData clientData); /* 106 */
    void (*tcl_DeleteExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 107 */
    void (*tcl_DeleteHashEntry) (Tcl_HashEntry *entryPtr); /* 108 */
    void (*tcl_DeleteHashTable) (Tcl_HashTable *tablePtr); /* 109 */
    void (*tcl_DeleteInterp) (Tcl_Interp *interp); /* 110 */
    void (*tcl_DetachPids) (int numPids, Tcl_Pid *pidPtr); /* 111 */
    void (*tcl_DeleteTimerHandler) (Tcl_TimerToken token); /* 112 */
    void (*tcl_DeleteTrace) (Tcl_Interp *interp, Tcl_Trace trace); /* 113 */
    void (*tcl_DontCallWhenDeleted) (Tcl_Interp *interp, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 114 */
    int (*tcl_DoOneEvent) (int flags); /* 115 */
    void (*tcl_DoWhenIdle) (Tcl_IdleProc *proc, ClientData clientData); /* 116 */
    char * (*tcl_DStringAppend) (Tcl_DString *dsPtr, const char *bytes, int length); /* 117 */
    char * (*tcl_DStringAppendElement) (Tcl_DString *dsPtr, const char *element); /* 118 */
    void (*tcl_DStringEndSublist) (Tcl_DString *dsPtr); /* 119 */
    void (*tcl_DStringFree) (Tcl_DString *dsPtr); /* 120 */
    void (*tcl_DStringGetResult) (Tcl_Interp *interp, Tcl_DString *dsPtr); /* 121 */
    void (*tcl_DStringInit) (Tcl_DString *dsPtr); /* 122 */
    void (*tcl_DStringResult) (Tcl_Interp *interp, Tcl_DString *dsPtr); /* 123 */
    void (*tcl_DStringSetLength) (Tcl_DString *dsPtr, int length); /* 124 */
    void (*tcl_DStringStartSublist) (Tcl_DString *dsPtr); /* 125 */
    int (*tcl_Eof) (Tcl_Channel chan); /* 126 */
    CONST84_RETURN char * (*tcl_ErrnoId) (void); /* 127 */
    CONST84_RETURN char * (*tcl_ErrnoMsg) (int err); /* 128 */
    int (*tcl_Eval) (Tcl_Interp *interp, const char *script); /* 129 */
    int (*tcl_EvalFile) (Tcl_Interp *interp, const char *fileName); /* 130 */
    int (*tcl_EvalObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 131 */
    void (*tcl_EventuallyFree) (ClientData clientData, Tcl_FreeProc *freeProc); /* 132 */
    void (*tcl_Exit) (int status); /* 133 */
    int (*tcl_ExposeCommand) (Tcl_Interp *interp, const char *hiddenCmdToken, const char *cmdName); /* 134 */
    int (*tcl_ExprBoolean) (Tcl_Interp *interp, const char *expr, int *ptr); /* 135 */
    int (*tcl_ExprBooleanObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int *ptr); /* 136 */
    int (*tcl_ExprDouble) (Tcl_Interp *interp, const char *expr, double *ptr); /* 137 */
    int (*tcl_ExprDoubleObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, double *ptr); /* 138 */
    int (*tcl_ExprLong) (Tcl_Interp *interp, const char *expr, long *ptr); /* 139 */
    int (*tcl_ExprLongObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, long *ptr); /* 140 */
    int (*tcl_ExprObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Obj **resultPtrPtr); /* 141 */
    int (*tcl_ExprString) (Tcl_Interp *interp, const char *expr); /* 142 */
    void (*tcl_Finalize) (void); /* 143 */
    void (*tcl_FindExecutable) (const char *argv0); /* 144 */
    Tcl_HashEntry * (*tcl_FirstHashEntry) (Tcl_HashTable *tablePtr, Tcl_HashSearch *searchPtr); /* 145 */
    int (*tcl_Flush) (Tcl_Channel chan); /* 146 */
    void (*tcl_FreeResult) (Tcl_Interp *interp); /* 147 */
    int (*tcl_GetAlias) (Tcl_Interp *interp, const char *slaveCmd, Tcl_Interp **targetInterpPtr, CONST84 char **targetCmdPtr, int *argcPtr, CONST84 char ***argvPtr); /* 148 */
    int (*tcl_GetAliasObj) (Tcl_Interp *interp, const char *slaveCmd, Tcl_Interp **targetInterpPtr, CONST84 char **targetCmdPtr, int *objcPtr, Tcl_Obj ***objv); /* 149 */
    ClientData (*tcl_GetAssocData) (Tcl_Interp *interp, const char *name, Tcl_InterpDeleteProc **procPtr); /* 150 */
    Tcl_Channel (*tcl_GetChannel) (Tcl_Interp *interp, const char *chanName, int *modePtr); /* 151 */
    int (*tcl_GetChannelBufferSize) (Tcl_Channel chan); /* 152 */
    int (*tcl_GetChannelHandle) (Tcl_Channel chan, int direction, ClientData *handlePtr); /* 153 */
    ClientData (*tcl_GetChannelInstanceData) (Tcl_Channel chan); /* 154 */
    int (*tcl_GetChannelMode) (Tcl_Channel chan); /* 155 */
    CONST84_RETURN char * (*tcl_GetChannelName) (Tcl_Channel chan); /* 156 */
    int (*tcl_GetChannelOption) (Tcl_Interp *interp, Tcl_Channel chan, const char *optionName, Tcl_DString *dsPtr); /* 157 */
    CONST86 Tcl_ChannelType * (*tcl_GetChannelType) (Tcl_Channel chan); /* 158 */
    int (*tcl_GetCommandInfo) (Tcl_Interp *interp, const char *cmdName, Tcl_CmdInfo *infoPtr); /* 159 */
    CONST84_RETURN char * (*tcl_GetCommandName) (Tcl_Interp *interp, Tcl_Command command); /* 160 */
    int (*tcl_GetErrno) (void); /* 161 */
    CONST84_RETURN char * (*tcl_GetHostName) (void); /* 162 */
    int (*tcl_GetInterpPath) (Tcl_Interp *askInterp, Tcl_Interp *slaveInterp); /* 163 */
    Tcl_Interp * (*tcl_GetMaster) (Tcl_Interp *interp); /* 164 */
    const char * (*tcl_GetNameOfExecutable) (void); /* 165 */
    Tcl_Obj * (*tcl_GetObjResult) (Tcl_Interp *interp); /* 166 */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
    int (*tcl_GetOpenFile) (Tcl_Interp *interp, const char *chanID, int forWriting, int checkUsage, ClientData *filePtr); /* 167 */
#endif /* UNIX */
#if defined(__WIN32__) /* WIN */
    void (*reserved167)(void);
#endif /* WIN */
#ifdef MAC_OSX_TCL /* MACOSX */
    int (*tcl_GetOpenFile) (Tcl_Interp *interp, const char *chanID, int forWriting, int checkUsage, ClientData *filePtr); /* 167 */
#endif /* MACOSX */
    Tcl_PathType (*tcl_GetPathType) (const char *path); /* 168 */
    int (*tcl_Gets) (Tcl_Channel chan, Tcl_DString *dsPtr); /* 169 */
    int (*tcl_GetsObj) (Tcl_Channel chan, Tcl_Obj *objPtr); /* 170 */
    int (*tcl_GetServiceMode) (void); /* 171 */
    Tcl_Interp * (*tcl_GetSlave) (Tcl_Interp *interp, const char *slaveName); /* 172 */
    Tcl_Channel (*tcl_GetStdChannel) (int type); /* 173 */
    CONST84_RETURN char * (*tcl_GetStringResult) (Tcl_Interp *interp); /* 174 */
    CONST84_RETURN char * (*tcl_GetVar) (Tcl_Interp *interp, const char *varName, int flags); /* 175 */
    CONST84_RETURN char * (*tcl_GetVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags); /* 176 */
    int (*tcl_GlobalEval) (Tcl_Interp *interp, const char *command); /* 177 */
    int (*tcl_GlobalEvalObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 178 */
    int (*tcl_HideCommand) (Tcl_Interp *interp, const char *cmdName, const char *hiddenCmdToken); /* 179 */
    int (*tcl_Init) (Tcl_Interp *interp); /* 180 */
    void (*tcl_InitHashTable) (Tcl_HashTable *tablePtr, int keyType); /* 181 */
    int (*tcl_InputBlocked) (Tcl_Channel chan); /* 182 */
    int (*tcl_InputBuffered) (Tcl_Channel chan); /* 183 */
    int (*tcl_InterpDeleted) (Tcl_Interp *interp); /* 184 */
    int (*tcl_IsSafe) (Tcl_Interp *interp); /* 185 */
    char * (*tcl_JoinPath) (int argc, CONST84 char *const *argv, Tcl_DString *resultPtr); /* 186 */
    int (*tcl_LinkVar) (Tcl_Interp *interp, const char *varName, char *addr, int type); /* 187 */
    void (*reserved188)(void);
    Tcl_Channel (*tcl_MakeFileChannel) (ClientData handle, int mode); /* 189 */
    int (*tcl_MakeSafe) (Tcl_Interp *interp); /* 190 */
    Tcl_Channel (*tcl_MakeTcpClientChannel) (ClientData tcpSocket); /* 191 */
    char * (*tcl_Merge) (int argc, CONST84 char *const *argv); /* 192 */
    Tcl_HashEntry * (*tcl_NextHashEntry) (Tcl_HashSearch *searchPtr); /* 193 */
    void (*tcl_NotifyChannel) (Tcl_Channel channel, int mask); /* 194 */
    Tcl_Obj * (*tcl_ObjGetVar2) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, int flags); /* 195 */
    Tcl_Obj * (*tcl_ObjSetVar2) (Tcl_Interp *interp, Tcl_Obj *part1Ptr, Tcl_Obj *part2Ptr, Tcl_Obj *newValuePtr, int flags); /* 196 */
    Tcl_Channel (*tcl_OpenCommandChannel) (Tcl_Interp *interp, int argc, CONST84 char **argv, int flags); /* 197 */
    Tcl_Channel (*tcl_OpenFileChannel) (Tcl_Interp *interp, const char *fileName, const char *modeString, int permissions); /* 198 */
    Tcl_Channel (*tcl_OpenTcpClient) (Tcl_Interp *interp, int port, const char *address, const char *myaddr, int myport, int async); /* 199 */
    Tcl_Channel (*tcl_OpenTcpServer) (Tcl_Interp *interp, int port, const char *host, Tcl_TcpAcceptProc *acceptProc, ClientData callbackData); /* 200 */
    void (*tcl_Preserve) (ClientData data); /* 201 */
    void (*tcl_PrintDouble) (Tcl_Interp *interp, double value, char *dst); /* 202 */
    int (*tcl_PutEnv) (const char *assignment); /* 203 */
    CONST84_RETURN char * (*tcl_PosixError) (Tcl_Interp *interp); /* 204 */
    void (*tcl_QueueEvent) (Tcl_Event *evPtr, Tcl_QueuePosition position); /* 205 */
    int (*tcl_Read) (Tcl_Channel chan, char *bufPtr, int toRead); /* 206 */
    void (*tcl_ReapDetachedProcs) (void); /* 207 */
    int (*tcl_RecordAndEval) (Tcl_Interp *interp, const char *cmd, int flags); /* 208 */
    int (*tcl_RecordAndEvalObj) (Tcl_Interp *interp, Tcl_Obj *cmdPtr, int flags); /* 209 */
    void (*tcl_RegisterChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 210 */
    void (*tcl_RegisterObjType) (const Tcl_ObjType *typePtr); /* 211 */
    Tcl_RegExp (*tcl_RegExpCompile) (Tcl_Interp *interp, const char *pattern); /* 212 */
    int (*tcl_RegExpExec) (Tcl_Interp *interp, Tcl_RegExp regexp, const char *text, const char *start); /* 213 */
    int (*tcl_RegExpMatch) (Tcl_Interp *interp, const char *text, const char *pattern); /* 214 */
    void (*tcl_RegExpRange) (Tcl_RegExp regexp, int index, CONST84 char **startPtr, CONST84 char **endPtr); /* 215 */
    void (*tcl_Release) (ClientData clientData); /* 216 */
    void (*tcl_ResetResult) (Tcl_Interp *interp); /* 217 */
    int (*tcl_ScanElement) (const char *src, int *flagPtr); /* 218 */
    int (*tcl_ScanCountedElement) (const char *src, int length, int *flagPtr); /* 219 */
    int (*tcl_SeekOld) (Tcl_Channel chan, int offset, int mode); /* 220 */
    int (*tcl_ServiceAll) (void); /* 221 */
    int (*tcl_ServiceEvent) (int flags); /* 222 */
    void (*tcl_SetAssocData) (Tcl_Interp *interp, const char *name, Tcl_InterpDeleteProc *proc, ClientData clientData); /* 223 */
    void (*tcl_SetChannelBufferSize) (Tcl_Channel chan, int sz); /* 224 */
    int (*tcl_SetChannelOption) (Tcl_Interp *interp, Tcl_Channel chan, const char *optionName, const char *newValue); /* 225 */
    int (*tcl_SetCommandInfo) (Tcl_Interp *interp, const char *cmdName, const Tcl_CmdInfo *infoPtr); /* 226 */
    void (*tcl_SetErrno) (int err); /* 227 */
    void (*tcl_SetErrorCode) (Tcl_Interp *interp, ...); /* 228 */
    void (*tcl_SetMaxBlockTime) (const Tcl_Time *timePtr); /* 229 */
    void (*tcl_SetPanicProc) (Tcl_PanicProc *panicProc); /* 230 */
    int (*tcl_SetRecursionLimit) (Tcl_Interp *interp, int depth); /* 231 */
    void (*tcl_SetResult) (Tcl_Interp *interp, char *result, Tcl_FreeProc *freeProc); /* 232 */
    int (*tcl_SetServiceMode) (int mode); /* 233 */
    void (*tcl_SetObjErrorCode) (Tcl_Interp *interp, Tcl_Obj *errorObjPtr); /* 234 */
    void (*tcl_SetObjResult) (Tcl_Interp *interp, Tcl_Obj *resultObjPtr); /* 235 */
    void (*tcl_SetStdChannel) (Tcl_Channel channel, int type); /* 236 */
    CONST84_RETURN char * (*tcl_SetVar) (Tcl_Interp *interp, const char *varName, const char *newValue, int flags); /* 237 */
    CONST84_RETURN char * (*tcl_SetVar2) (Tcl_Interp *interp, const char *part1, const char *part2, const char *newValue, int flags); /* 238 */
    CONST84_RETURN char * (*tcl_SignalId) (int sig); /* 239 */
    CONST84_RETURN char * (*tcl_SignalMsg) (int sig); /* 240 */
    void (*tcl_SourceRCFile) (Tcl_Interp *interp); /* 241 */
    int (*tcl_SplitList) (Tcl_Interp *interp, const char *listStr, int *argcPtr, CONST84 char ***argvPtr); /* 242 */
    void (*tcl_SplitPath) (const char *path, int *argcPtr, CONST84 char ***argvPtr); /* 243 */
    void (*tcl_StaticPackage) (Tcl_Interp *interp, const char *pkgName, Tcl_PackageInitProc *initProc, Tcl_PackageInitProc *safeInitProc); /* 244 */
    int (*tcl_StringMatch) (const char *str, const char *pattern); /* 245 */
    int (*tcl_TellOld) (Tcl_Channel chan); /* 246 */
    int (*tcl_TraceVar) (Tcl_Interp *interp, const char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 247 */
    int (*tcl_TraceVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 248 */
    char * (*tcl_TranslateFileName) (Tcl_Interp *interp, const char *name, Tcl_DString *bufferPtr); /* 249 */
    int (*tcl_Ungets) (Tcl_Channel chan, const char *str, int len, int atHead); /* 250 */
    void (*tcl_UnlinkVar) (Tcl_Interp *interp, const char *varName); /* 251 */
    int (*tcl_UnregisterChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 252 */
    int (*tcl_UnsetVar) (Tcl_Interp *interp, const char *varName, int flags); /* 253 */
    int (*tcl_UnsetVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags); /* 254 */
    void (*tcl_UntraceVar) (Tcl_Interp *interp, const char *varName, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 255 */
    void (*tcl_UntraceVar2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags, Tcl_VarTraceProc *proc, ClientData clientData); /* 256 */
    void (*tcl_UpdateLinkedVar) (Tcl_Interp *interp, const char *varName); /* 257 */
    int (*tcl_UpVar) (Tcl_Interp *interp, const char *frameName, const char *varName, const char *localName, int flags); /* 258 */
    int (*tcl_UpVar2) (Tcl_Interp *interp, const char *frameName, const char *part1, const char *part2, const char *localName, int flags); /* 259 */
    int (*tcl_VarEval) (Tcl_Interp *interp, ...); /* 260 */
    ClientData (*tcl_VarTraceInfo) (Tcl_Interp *interp, const char *varName, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData); /* 261 */
    ClientData (*tcl_VarTraceInfo2) (Tcl_Interp *interp, const char *part1, const char *part2, int flags, Tcl_VarTraceProc *procPtr, ClientData prevClientData); /* 262 */
    int (*tcl_Write) (Tcl_Channel chan, const char *s, int slen); /* 263 */
    void (*tcl_WrongNumArgs) (Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], const char *message); /* 264 */
    int (*tcl_DumpActiveMemory) (const char *fileName); /* 265 */
    void (*tcl_ValidateAllMemory) (const char *file, int line); /* 266 */
    void (*tcl_AppendResultVA) (Tcl_Interp *interp, va_list argList); /* 267 */
    void (*tcl_AppendStringsToObjVA) (Tcl_Obj *objPtr, va_list argList); /* 268 */
    char * (*tcl_HashStats) (Tcl_HashTable *tablePtr); /* 269 */
    CONST84_RETURN char * (*tcl_ParseVar) (Tcl_Interp *interp, const char *start, CONST84 char **termPtr); /* 270 */
    CONST84_RETURN char * (*tcl_PkgPresent) (Tcl_Interp *interp, const char *name, const char *version, int exact); /* 271 */
    CONST84_RETURN char * (*tcl_PkgPresentEx) (Tcl_Interp *interp, const char *name, const char *version, int exact, void *clientDataPtr); /* 272 */
    int (*tcl_PkgProvide) (Tcl_Interp *interp, const char *name, const char *version); /* 273 */
    CONST84_RETURN char * (*tcl_PkgRequire) (Tcl_Interp *interp, const char *name, const char *version, int exact); /* 274 */
    void (*tcl_SetErrorCodeVA) (Tcl_Interp *interp, va_list argList); /* 275 */
    int (*tcl_VarEvalVA) (Tcl_Interp *interp, va_list argList); /* 276 */
    Tcl_Pid (*tcl_WaitPid) (Tcl_Pid pid, int *statPtr, int options); /* 277 */
    void (*tcl_PanicVA) (const char *format, va_list argList); /* 278 */
    void (*tcl_GetVersion) (int *major, int *minor, int *patchLevel, int *type); /* 279 */
    void (*tcl_InitMemory) (Tcl_Interp *interp); /* 280 */
    Tcl_Channel (*tcl_StackChannel) (Tcl_Interp *interp, const Tcl_ChannelType *typePtr, ClientData instanceData, int mask, Tcl_Channel prevChan); /* 281 */
    int (*tcl_UnstackChannel) (Tcl_Interp *interp, Tcl_Channel chan); /* 282 */
    Tcl_Channel (*tcl_GetStackedChannel) (Tcl_Channel chan); /* 283 */
    void (*tcl_SetMainLoop) (Tcl_MainLoopProc *proc); /* 284 */
    void (*reserved285)(void);
    void (*tcl_AppendObjToObj) (Tcl_Obj *objPtr, Tcl_Obj *appendObjPtr); /* 286 */
    Tcl_Encoding (*tcl_CreateEncoding) (const Tcl_EncodingType *typePtr); /* 287 */
    void (*tcl_CreateThreadExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 288 */
    void (*tcl_DeleteThreadExitHandler) (Tcl_ExitProc *proc, ClientData clientData); /* 289 */
    void (*tcl_DiscardResult) (Tcl_SavedResult *statePtr); /* 290 */
    int (*tcl_EvalEx) (Tcl_Interp *interp, const char *script, int numBytes, int flags); /* 291 */
    int (*tcl_EvalObjv) (Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], int flags); /* 292 */
    int (*tcl_EvalObjEx) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 293 */
    void (*tcl_ExitThread) (int status); /* 294 */
    int (*tcl_ExternalToUtf) (Tcl_Interp *interp, Tcl_Encoding encoding, const char *src, int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst, int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr); /* 295 */
    char * (*tcl_ExternalToUtfDString) (Tcl_Encoding encoding, const char *src, int srcLen, Tcl_DString *dsPtr); /* 296 */
    void (*tcl_FinalizeThread) (void); /* 297 */
    void (*tcl_FinalizeNotifier) (ClientData clientData); /* 298 */
    void (*tcl_FreeEncoding) (Tcl_Encoding encoding); /* 299 */
    Tcl_ThreadId (*tcl_GetCurrentThread) (void); /* 300 */
    Tcl_Encoding (*tcl_GetEncoding) (Tcl_Interp *interp, const char *name); /* 301 */
    CONST84_RETURN char * (*tcl_GetEncodingName) (Tcl_Encoding encoding); /* 302 */
    void (*tcl_GetEncodingNames) (Tcl_Interp *interp); /* 303 */
    int (*tcl_GetIndexFromObjStruct) (Tcl_Interp *interp, Tcl_Obj *objPtr, const void *tablePtr, int offset, const char *msg, int flags, int *indexPtr); /* 304 */
    void * (*tcl_GetThreadData) (Tcl_ThreadDataKey *keyPtr, int size); /* 305 */
    Tcl_Obj * (*tcl_GetVar2Ex) (Tcl_Interp *interp, const char *part1, const char *part2, int flags); /* 306 */
    ClientData (*tcl_InitNotifier) (void); /* 307 */
    void (*tcl_MutexLock) (Tcl_Mutex *mutexPtr); /* 308 */
    void (*tcl_MutexUnlock) (Tcl_Mutex *mutexPtr); /* 309 */
    void (*tcl_ConditionNotify) (Tcl_Condition *condPtr); /* 310 */
    void (*tcl_ConditionWait) (Tcl_Condition *condPtr, Tcl_Mutex *mutexPtr, const Tcl_Time *timePtr); /* 311 */
    int (*tcl_NumUtfChars) (const char *src, int length); /* 312 */
    int (*tcl_ReadChars) (Tcl_Channel channel, Tcl_Obj *objPtr, int charsToRead, int appendFlag); /* 313 */
    void (*tcl_RestoreResult) (Tcl_Interp *interp, Tcl_SavedResult *statePtr); /* 314 */
    void (*tcl_SaveResult) (Tcl_Interp *interp, Tcl_SavedResult *statePtr); /* 315 */
    int (*tcl_SetSystemEncoding) (Tcl_Interp *interp, const char *name); /* 316 */
    Tcl_Obj * (*tcl_SetVar2Ex) (Tcl_Interp *interp, const char *part1, const char *part2, Tcl_Obj *newValuePtr, int flags); /* 317 */
    void (*tcl_ThreadAlert) (Tcl_ThreadId threadId); /* 318 */
    void (*tcl_ThreadQueueEvent) (Tcl_ThreadId threadId, Tcl_Event *evPtr, Tcl_QueuePosition position); /* 319 */
    Tcl_UniChar (*tcl_UniCharAtIndex) (const char *src, int index); /* 320 */
    Tcl_UniChar (*tcl_UniCharToLower) (int ch); /* 321 */
    Tcl_UniChar (*tcl_UniCharToTitle) (int ch); /* 322 */
    Tcl_UniChar (*tcl_UniCharToUpper) (int ch); /* 323 */
    int (*tcl_UniCharToUtf) (int ch, char *buf); /* 324 */
    CONST84_RETURN char * (*tcl_UtfAtIndex) (const char *src, int index); /* 325 */
    int (*tcl_UtfCharComplete) (const char *src, int length); /* 326 */
    int (*tcl_UtfBackslash) (const char *src, int *readPtr, char *dst); /* 327 */
    CONST84_RETURN char * (*tcl_UtfFindFirst) (const char *src, int ch); /* 328 */
    CONST84_RETURN char * (*tcl_UtfFindLast) (const char *src, int ch); /* 329 */
    CONST84_RETURN char * (*tcl_UtfNext) (const char *src); /* 330 */
    CONST84_RETURN char * (*tcl_UtfPrev) (const char *src, const char *start); /* 331 */
    int (*tcl_UtfToExternal) (Tcl_Interp *interp, Tcl_Encoding encoding, const char *src, int srcLen, int flags, Tcl_EncodingState *statePtr, char *dst, int dstLen, int *srcReadPtr, int *dstWrotePtr, int *dstCharsPtr); /* 332 */
    char * (*tcl_UtfToExternalDString) (Tcl_Encoding encoding, const char *src, int srcLen, Tcl_DString *dsPtr); /* 333 */
    int (*tcl_UtfToLower) (char *src); /* 334 */
    int (*tcl_UtfToTitle) (char *src); /* 335 */
    int (*tcl_UtfToUniChar) (const char *src, Tcl_UniChar *chPtr); /* 336 */
    int (*tcl_UtfToUpper) (char *src); /* 337 */
    int (*tcl_WriteChars) (Tcl_Channel chan, const char *src, int srcLen); /* 338 */
    int (*tcl_WriteObj) (Tcl_Channel chan, Tcl_Obj *objPtr); /* 339 */
    char * (*tcl_GetString) (Tcl_Obj *objPtr); /* 340 */
    CONST84_RETURN char * (*tcl_GetDefaultEncodingDir) (void); /* 341 */
    void (*tcl_SetDefaultEncodingDir) (const char *path); /* 342 */
    void (*tcl_AlertNotifier) (ClientData clientData); /* 343 */
    void (*tcl_ServiceModeHook) (int mode); /* 344 */
    int (*tcl_UniCharIsAlnum) (int ch); /* 345 */
    int (*tcl_UniCharIsAlpha) (int ch); /* 346 */
    int (*tcl_UniCharIsDigit) (int ch); /* 347 */
    int (*tcl_UniCharIsLower) (int ch); /* 348 */
    int (*tcl_UniCharIsSpace) (int ch); /* 349 */
    int (*tcl_UniCharIsUpper) (int ch); /* 350 */
    int (*tcl_UniCharIsWordChar) (int ch); /* 351 */
    int (*tcl_UniCharLen) (const Tcl_UniChar *uniStr); /* 352 */
    int (*tcl_UniCharNcmp) (const Tcl_UniChar *ucs, const Tcl_UniChar *uct, unsigned long numChars); /* 353 */
    char * (*tcl_UniCharToUtfDString) (const Tcl_UniChar *uniStr, int uniLength, Tcl_DString *dsPtr); /* 354 */
    Tcl_UniChar * (*tcl_UtfToUniCharDString) (const char *src, int length, Tcl_DString *dsPtr); /* 355 */
    Tcl_RegExp (*tcl_GetRegExpFromObj) (Tcl_Interp *interp, Tcl_Obj *patObj, int flags); /* 356 */
    Tcl_Obj * (*tcl_EvalTokens) (Tcl_Interp *interp, Tcl_Token *tokenPtr, int count); /* 357 */
    void (*tcl_FreeParse) (Tcl_Parse *parsePtr); /* 358 */
    void (*tcl_LogCommandInfo) (Tcl_Interp *interp, const char *script, const char *command, int length); /* 359 */
    int (*tcl_ParseBraces) (Tcl_Interp *interp, const char *start, int numBytes, Tcl_Parse *parsePtr, int append, CONST84 char **termPtr); /* 360 */
    int (*tcl_ParseCommand) (Tcl_Interp *interp, const char *start, int numBytes, int nested, Tcl_Parse *parsePtr); /* 361 */
    int (*tcl_ParseExpr) (Tcl_Interp *interp, const char *start, int numBytes, Tcl_Parse *parsePtr); /* 362 */
    int (*tcl_ParseQuotedString) (Tcl_Interp *interp, const char *start, int numBytes, Tcl_Parse *parsePtr, int append, CONST84 char **termPtr); /* 363 */
    int (*tcl_ParseVarName) (Tcl_Interp *interp, const char *start, int numBytes, Tcl_Parse *parsePtr, int append); /* 364 */
    char * (*tcl_GetCwd) (Tcl_Interp *interp, Tcl_DString *cwdPtr); /* 365 */
    int (*tcl_Chdir) (const char *dirName); /* 366 */
    int (*tcl_Access) (const char *path, int mode); /* 367 */
    int (*tcl_Stat) (const char *path, struct stat *bufPtr); /* 368 */
    int (*tcl_UtfNcmp) (const char *s1, const char *s2, unsigned long n); /* 369 */
    int (*tcl_UtfNcasecmp) (const char *s1, const char *s2, unsigned long n); /* 370 */
    int (*tcl_StringCaseMatch) (const char *str, const char *pattern, int nocase); /* 371 */
    int (*tcl_UniCharIsControl) (int ch); /* 372 */
    int (*tcl_UniCharIsGraph) (int ch); /* 373 */
    int (*tcl_UniCharIsPrint) (int ch); /* 374 */
    int (*tcl_UniCharIsPunct) (int ch); /* 375 */
    int (*tcl_RegExpExecObj) (Tcl_Interp *interp, Tcl_RegExp regexp, Tcl_Obj *textObj, int offset, int nmatches, int flags); /* 376 */
    void (*tcl_RegExpGetInfo) (Tcl_RegExp regexp, Tcl_RegExpInfo *infoPtr); /* 377 */
    Tcl_Obj * (*tcl_NewUnicodeObj) (const Tcl_UniChar *unicode, int numChars); /* 378 */
    void (*tcl_SetUnicodeObj) (Tcl_Obj *objPtr, const Tcl_UniChar *unicode, int numChars); /* 379 */
    int (*tcl_GetCharLength) (Tcl_Obj *objPtr); /* 380 */
    Tcl_UniChar (*tcl_GetUniChar) (Tcl_Obj *objPtr, int index); /* 381 */
    Tcl_UniChar * (*tcl_GetUnicode) (Tcl_Obj *objPtr); /* 382 */
    Tcl_Obj * (*tcl_GetRange) (Tcl_Obj *objPtr, int first, int last); /* 383 */
    void (*tcl_AppendUnicodeToObj) (Tcl_Obj *objPtr, const Tcl_UniChar *unicode, int length); /* 384 */
    int (*tcl_RegExpMatchObj) (Tcl_Interp *interp, Tcl_Obj *textObj, Tcl_Obj *patternObj); /* 385 */
    void (*tcl_SetNotifier) (Tcl_NotifierProcs *notifierProcPtr); /* 386 */
    Tcl_Mutex * (*tcl_GetAllocMutex) (void); /* 387 */
    int (*tcl_GetChannelNames) (Tcl_Interp *interp); /* 388 */
    int (*tcl_GetChannelNamesEx) (Tcl_Interp *interp, const char *pattern); /* 389 */
    int (*tcl_ProcObjCmd) (ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]); /* 390 */
    void (*tcl_ConditionFinalize) (Tcl_Condition *condPtr); /* 391 */
    void (*tcl_MutexFinalize) (Tcl_Mutex *mutex); /* 392 */
    int (*tcl_CreateThread) (Tcl_ThreadId *idPtr, Tcl_ThreadCreateProc *proc, ClientData clientData, int stackSize, int flags); /* 393 */
    int (*tcl_ReadRaw) (Tcl_Channel chan, char *dst, int bytesToRead); /* 394 */
    int (*tcl_WriteRaw) (Tcl_Channel chan, const char *src, int srcLen); /* 395 */
    Tcl_Channel (*tcl_GetTopChannel) (Tcl_Channel chan); /* 396 */
    int (*tcl_ChannelBuffered) (Tcl_Channel chan); /* 397 */
    CONST84_RETURN char * (*tcl_ChannelName) (const Tcl_ChannelType *chanTypePtr); /* 398 */
    Tcl_ChannelTypeVersion (*tcl_ChannelVersion) (const Tcl_ChannelType *chanTypePtr); /* 399 */
    Tcl_DriverBlockModeProc * (*tcl_ChannelBlockModeProc) (const Tcl_ChannelType *chanTypePtr); /* 400 */
    Tcl_DriverCloseProc * (*tcl_ChannelCloseProc) (const Tcl_ChannelType *chanTypePtr); /* 401 */
    Tcl_DriverClose2Proc * (*tcl_ChannelClose2Proc) (const Tcl_ChannelType *chanTypePtr); /* 402 */
    Tcl_DriverInputProc * (*tcl_ChannelInputProc) (const Tcl_ChannelType *chanTypePtr); /* 403 */
    Tcl_DriverOutputProc * (*tcl_ChannelOutputProc) (const Tcl_ChannelType *chanTypePtr); /* 404 */
    Tcl_DriverSeekProc * (*tcl_ChannelSeekProc) (const Tcl_ChannelType *chanTypePtr); /* 405 */
    Tcl_DriverSetOptionProc * (*tcl_ChannelSetOptionProc) (const Tcl_ChannelType *chanTypePtr); /* 406 */
    Tcl_DriverGetOptionProc * (*tcl_ChannelGetOptionProc) (const Tcl_ChannelType *chanTypePtr); /* 407 */
    Tcl_DriverWatchProc * (*tcl_ChannelWatchProc) (const Tcl_ChannelType *chanTypePtr); /* 408 */
    Tcl_DriverGetHandleProc * (*tcl_ChannelGetHandleProc) (const Tcl_ChannelType *chanTypePtr); /* 409 */
    Tcl_DriverFlushProc * (*tcl_ChannelFlushProc) (const Tcl_ChannelType *chanTypePtr); /* 410 */
    Tcl_DriverHandlerProc * (*tcl_ChannelHandlerProc) (const Tcl_ChannelType *chanTypePtr); /* 411 */
    int (*tcl_JoinThread) (Tcl_ThreadId threadId, int *result); /* 412 */
    int (*tcl_IsChannelShared) (Tcl_Channel channel); /* 413 */
    int (*tcl_IsChannelRegistered) (Tcl_Interp *interp, Tcl_Channel channel); /* 414 */
    void (*tcl_CutChannel) (Tcl_Channel channel); /* 415 */
    void (*tcl_SpliceChannel) (Tcl_Channel channel); /* 416 */
    void (*tcl_ClearChannelHandlers) (Tcl_Channel channel); /* 417 */
    int (*tcl_IsChannelExisting) (const char *channelName); /* 418 */
    int (*tcl_UniCharNcasecmp) (const Tcl_UniChar *ucs, const Tcl_UniChar *uct, unsigned long numChars); /* 419 */
    int (*tcl_UniCharCaseMatch) (const Tcl_UniChar *uniStr, const Tcl_UniChar *uniPattern, int nocase); /* 420 */
    Tcl_HashEntry * (*tcl_FindHashEntry) (Tcl_HashTable *tablePtr, const void *key); /* 421 */
    Tcl_HashEntry * (*tcl_CreateHashEntry) (Tcl_HashTable *tablePtr, const void *key, int *newPtr); /* 422 */
    void (*tcl_InitCustomHashTable) (Tcl_HashTable *tablePtr, int keyType, const Tcl_HashKeyType *typePtr); /* 423 */
    void (*tcl_InitObjHashTable) (Tcl_HashTable *tablePtr); /* 424 */
    ClientData (*tcl_CommandTraceInfo) (Tcl_Interp *interp, const char *varName, int flags, Tcl_CommandTraceProc *procPtr, ClientData prevClientData); /* 425 */
    int (*tcl_TraceCommand) (Tcl_Interp *interp, const char *varName, int flags, Tcl_CommandTraceProc *proc, ClientData clientData); /* 426 */
    void (*tcl_UntraceCommand) (Tcl_Interp *interp, const char *varName, int flags, Tcl_CommandTraceProc *proc, ClientData clientData); /* 427 */
    char * (*tcl_AttemptAlloc) (unsigned int size); /* 428 */
    char * (*tcl_AttemptDbCkalloc) (unsigned int size, const char *file, int line); /* 429 */
    char * (*tcl_AttemptRealloc) (char *ptr, unsigned int size); /* 430 */
    char * (*tcl_AttemptDbCkrealloc) (char *ptr, unsigned int size, const char *file, int line); /* 431 */
    int (*tcl_AttemptSetObjLength) (Tcl_Obj *objPtr, int length); /* 432 */
    Tcl_ThreadId (*tcl_GetChannelThread) (Tcl_Channel channel); /* 433 */
    Tcl_UniChar * (*tcl_GetUnicodeFromObj) (Tcl_Obj *objPtr, int *lengthPtr); /* 434 */
    int (*tcl_GetMathFuncInfo) (Tcl_Interp *interp, const char *name, int *numArgsPtr, Tcl_ValueType **argTypesPtr, Tcl_MathProc **procPtr, ClientData *clientDataPtr); /* 435 */
    Tcl_Obj * (*tcl_ListMathFuncs) (Tcl_Interp *interp, const char *pattern); /* 436 */
    Tcl_Obj * (*tcl_SubstObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 437 */
    int (*tcl_DetachChannel) (Tcl_Interp *interp, Tcl_Channel channel); /* 438 */
    int (*tcl_IsStandardChannel) (Tcl_Channel channel); /* 439 */
    int (*tcl_FSCopyFile) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr); /* 440 */
    int (*tcl_FSCopyDirectory) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr, Tcl_Obj **errorPtr); /* 441 */
    int (*tcl_FSCreateDirectory) (Tcl_Obj *pathPtr); /* 442 */
    int (*tcl_FSDeleteFile) (Tcl_Obj *pathPtr); /* 443 */
    int (*tcl_FSLoadFile) (Tcl_Interp *interp, Tcl_Obj *pathPtr, const char *sym1, const char *sym2, Tcl_PackageInitProc **proc1Ptr, Tcl_PackageInitProc **proc2Ptr, Tcl_LoadHandle *handlePtr, Tcl_FSUnloadFileProc **unloadProcPtr); /* 444 */
    int (*tcl_FSMatchInDirectory) (Tcl_Interp *interp, Tcl_Obj *result, Tcl_Obj *pathPtr, const char *pattern, Tcl_GlobTypeData *types); /* 445 */
    Tcl_Obj * (*tcl_FSLink) (Tcl_Obj *pathPtr, Tcl_Obj *toPtr, int linkAction); /* 446 */
    int (*tcl_FSRemoveDirectory) (Tcl_Obj *pathPtr, int recursive, Tcl_Obj **errorPtr); /* 447 */
    int (*tcl_FSRenameFile) (Tcl_Obj *srcPathPtr, Tcl_Obj *destPathPtr); /* 448 */
    int (*tcl_FSLstat) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf); /* 449 */
    int (*tcl_FSUtime) (Tcl_Obj *pathPtr, struct utimbuf *tval); /* 450 */
    int (*tcl_FSFileAttrsGet) (Tcl_Interp *interp, int index, Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef); /* 451 */
    int (*tcl_FSFileAttrsSet) (Tcl_Interp *interp, int index, Tcl_Obj *pathPtr, Tcl_Obj *objPtr); /* 452 */
    const char *CONST86 * (*tcl_FSFileAttrStrings) (Tcl_Obj *pathPtr, Tcl_Obj **objPtrRef); /* 453 */
    int (*tcl_FSStat) (Tcl_Obj *pathPtr, Tcl_StatBuf *buf); /* 454 */
    int (*tcl_FSAccess) (Tcl_Obj *pathPtr, int mode); /* 455 */
    Tcl_Channel (*tcl_FSOpenFileChannel) (Tcl_Interp *interp, Tcl_Obj *pathPtr, const char *modeString, int permissions); /* 456 */
    Tcl_Obj * (*tcl_FSGetCwd) (Tcl_Interp *interp); /* 457 */
    int (*tcl_FSChdir) (Tcl_Obj *pathPtr); /* 458 */
    int (*tcl_FSConvertToPathType) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 459 */
    Tcl_Obj * (*tcl_FSJoinPath) (Tcl_Obj *listObj, int elements); /* 460 */
    Tcl_Obj * (*tcl_FSSplitPath) (Tcl_Obj *pathPtr, int *lenPtr); /* 461 */
    int (*tcl_FSEqualPaths) (Tcl_Obj *firstPtr, Tcl_Obj *secondPtr); /* 462 */
    Tcl_Obj * (*tcl_FSGetNormalizedPath) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 463 */
    Tcl_Obj * (*tcl_FSJoinToPath) (Tcl_Obj *pathPtr, int objc, Tcl_Obj *const objv[]); /* 464 */
    ClientData (*tcl_FSGetInternalRep) (Tcl_Obj *pathPtr, const Tcl_Filesystem *fsPtr); /* 465 */
    Tcl_Obj * (*tcl_FSGetTranslatedPath) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 466 */
    int (*tcl_FSEvalFile) (Tcl_Interp *interp, Tcl_Obj *fileName); /* 467 */
    Tcl_Obj * (*tcl_FSNewNativePath) (const Tcl_Filesystem *fromFilesystem, ClientData clientData); /* 468 */
    const void * (*tcl_FSGetNativePath) (Tcl_Obj *pathPtr); /* 469 */
    Tcl_Obj * (*tcl_FSFileSystemInfo) (Tcl_Obj *pathPtr); /* 470 */
    Tcl_Obj * (*tcl_FSPathSeparator) (Tcl_Obj *pathPtr); /* 471 */
    Tcl_Obj * (*tcl_FSListVolumes) (void); /* 472 */
    int (*tcl_FSRegister) (ClientData clientData, const Tcl_Filesystem *fsPtr); /* 473 */
    int (*tcl_FSUnregister) (const Tcl_Filesystem *fsPtr); /* 474 */
    ClientData (*tcl_FSData) (const Tcl_Filesystem *fsPtr); /* 475 */
    const char * (*tcl_FSGetTranslatedStringPath) (Tcl_Interp *interp, Tcl_Obj *pathPtr); /* 476 */
    CONST86 Tcl_Filesystem * (*tcl_FSGetFileSystemForPath) (Tcl_Obj *pathPtr); /* 477 */
    Tcl_PathType (*tcl_FSGetPathType) (Tcl_Obj *pathPtr); /* 478 */
    int (*tcl_OutputBuffered) (Tcl_Channel chan); /* 479 */
    void (*tcl_FSMountsChanged) (const Tcl_Filesystem *fsPtr); /* 480 */
    int (*tcl_EvalTokensStandard) (Tcl_Interp *interp, Tcl_Token *tokenPtr, int count); /* 481 */
    void (*tcl_GetTime) (Tcl_Time *timeBuf); /* 482 */
    Tcl_Trace (*tcl_CreateObjTrace) (Tcl_Interp *interp, int level, int flags, Tcl_CmdObjTraceProc *objProc, ClientData clientData, Tcl_CmdObjTraceDeleteProc *delProc); /* 483 */
    int (*tcl_GetCommandInfoFromToken) (Tcl_Command token, Tcl_CmdInfo *infoPtr); /* 484 */
    int (*tcl_SetCommandInfoFromToken) (Tcl_Command token, const Tcl_CmdInfo *infoPtr); /* 485 */
    Tcl_Obj * (*tcl_DbNewWideIntObj) (Tcl_WideInt wideValue, const char *file, int line); /* 486 */
    int (*tcl_GetWideIntFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_WideInt *widePtr); /* 487 */
    Tcl_Obj * (*tcl_NewWideIntObj) (Tcl_WideInt wideValue); /* 488 */
    void (*tcl_SetWideIntObj) (Tcl_Obj *objPtr, Tcl_WideInt wideValue); /* 489 */
    Tcl_StatBuf * (*tcl_AllocStatBuf) (void); /* 490 */
    Tcl_WideInt (*tcl_Seek) (Tcl_Channel chan, Tcl_WideInt offset, int mode); /* 491 */
    Tcl_WideInt (*tcl_Tell) (Tcl_Channel chan); /* 492 */
    Tcl_DriverWideSeekProc * (*tcl_ChannelWideSeekProc) (const Tcl_ChannelType *chanTypePtr); /* 493 */
    int (*tcl_DictObjPut) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr, Tcl_Obj *valuePtr); /* 494 */
    int (*tcl_DictObjGet) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr, Tcl_Obj **valuePtrPtr); /* 495 */
    int (*tcl_DictObjRemove) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_Obj *keyPtr); /* 496 */
    int (*tcl_DictObjSize) (Tcl_Interp *interp, Tcl_Obj *dictPtr, int *sizePtr); /* 497 */
    int (*tcl_DictObjFirst) (Tcl_Interp *interp, Tcl_Obj *dictPtr, Tcl_DictSearch *searchPtr, Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr, int *donePtr); /* 498 */
    void (*tcl_DictObjNext) (Tcl_DictSearch *searchPtr, Tcl_Obj **keyPtrPtr, Tcl_Obj **valuePtrPtr, int *donePtr); /* 499 */
    void (*tcl_DictObjDone) (Tcl_DictSearch *searchPtr); /* 500 */
    int (*tcl_DictObjPutKeyList) (Tcl_Interp *interp, Tcl_Obj *dictPtr, int keyc, Tcl_Obj *const *keyv, Tcl_Obj *valuePtr); /* 501 */
    int (*tcl_DictObjRemoveKeyList) (Tcl_Interp *interp, Tcl_Obj *dictPtr, int keyc, Tcl_Obj *const *keyv); /* 502 */
    Tcl_Obj * (*tcl_NewDictObj) (void); /* 503 */
    Tcl_Obj * (*tcl_DbNewDictObj) (const char *file, int line); /* 504 */
    void (*tcl_RegisterConfig) (Tcl_Interp *interp, const char *pkgName, const Tcl_Config *configuration, const char *valEncoding); /* 505 */
    Tcl_Namespace * (*tcl_CreateNamespace) (Tcl_Interp *interp, const char *name, ClientData clientData, Tcl_NamespaceDeleteProc *deleteProc); /* 506 */
    void (*tcl_DeleteNamespace) (Tcl_Namespace *nsPtr); /* 507 */
    int (*tcl_AppendExportList) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *objPtr); /* 508 */
    int (*tcl_Export) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, const char *pattern, int resetListFirst); /* 509 */
    int (*tcl_Import) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, const char *pattern, int allowOverwrite); /* 510 */
    int (*tcl_ForgetImport) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, const char *pattern); /* 511 */
    Tcl_Namespace * (*tcl_GetCurrentNamespace) (Tcl_Interp *interp); /* 512 */
    Tcl_Namespace * (*tcl_GetGlobalNamespace) (Tcl_Interp *interp); /* 513 */
    Tcl_Namespace * (*tcl_FindNamespace) (Tcl_Interp *interp, const char *name, Tcl_Namespace *contextNsPtr, int flags); /* 514 */
    Tcl_Command (*tcl_FindCommand) (Tcl_Interp *interp, const char *name, Tcl_Namespace *contextNsPtr, int flags); /* 515 */
    Tcl_Command (*tcl_GetCommandFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 516 */
    void (*tcl_GetCommandFullName) (Tcl_Interp *interp, Tcl_Command command, Tcl_Obj *objPtr); /* 517 */
    int (*tcl_FSEvalFileEx) (Tcl_Interp *interp, Tcl_Obj *fileName, const char *encodingName); /* 518 */
    Tcl_ExitProc * (*tcl_SetExitProc) (Tcl_ExitProc *proc); /* 519 */
    void (*tcl_LimitAddHandler) (Tcl_Interp *interp, int type, Tcl_LimitHandlerProc *handlerProc, ClientData clientData, Tcl_LimitHandlerDeleteProc *deleteProc); /* 520 */
    void (*tcl_LimitRemoveHandler) (Tcl_Interp *interp, int type, Tcl_LimitHandlerProc *handlerProc, ClientData clientData); /* 521 */
    int (*tcl_LimitReady) (Tcl_Interp *interp); /* 522 */
    int (*tcl_LimitCheck) (Tcl_Interp *interp); /* 523 */
    int (*tcl_LimitExceeded) (Tcl_Interp *interp); /* 524 */
    void (*tcl_LimitSetCommands) (Tcl_Interp *interp, int commandLimit); /* 525 */
    void (*tcl_LimitSetTime) (Tcl_Interp *interp, Tcl_Time *timeLimitPtr); /* 526 */
    void (*tcl_LimitSetGranularity) (Tcl_Interp *interp, int type, int granularity); /* 527 */
    int (*tcl_LimitTypeEnabled) (Tcl_Interp *interp, int type); /* 528 */
    int (*tcl_LimitTypeExceeded) (Tcl_Interp *interp, int type); /* 529 */
    void (*tcl_LimitTypeSet) (Tcl_Interp *interp, int type); /* 530 */
    void (*tcl_LimitTypeReset) (Tcl_Interp *interp, int type); /* 531 */
    int (*tcl_LimitGetCommands) (Tcl_Interp *interp); /* 532 */
    void (*tcl_LimitGetTime) (Tcl_Interp *interp, Tcl_Time *timeLimitPtr); /* 533 */
    int (*tcl_LimitGetGranularity) (Tcl_Interp *interp, int type); /* 534 */
    Tcl_InterpState (*tcl_SaveInterpState) (Tcl_Interp *interp, int status); /* 535 */
    int (*tcl_RestoreInterpState) (Tcl_Interp *interp, Tcl_InterpState state); /* 536 */
    void (*tcl_DiscardInterpState) (Tcl_InterpState state); /* 537 */
    int (*tcl_SetReturnOptions) (Tcl_Interp *interp, Tcl_Obj *options); /* 538 */
    Tcl_Obj * (*tcl_GetReturnOptions) (Tcl_Interp *interp, int result); /* 539 */
    int (*tcl_IsEnsemble) (Tcl_Command token); /* 540 */
    Tcl_Command (*tcl_CreateEnsemble) (Tcl_Interp *interp, const char *name, Tcl_Namespace *namespacePtr, int flags); /* 541 */
    Tcl_Command (*tcl_FindEnsemble) (Tcl_Interp *interp, Tcl_Obj *cmdNameObj, int flags); /* 542 */
    int (*tcl_SetEnsembleSubcommandList) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *subcmdList); /* 543 */
    int (*tcl_SetEnsembleMappingDict) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *mapDict); /* 544 */
    int (*tcl_SetEnsembleUnknownHandler) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *unknownList); /* 545 */
    int (*tcl_SetEnsembleFlags) (Tcl_Interp *interp, Tcl_Command token, int flags); /* 546 */
    int (*tcl_GetEnsembleSubcommandList) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **subcmdListPtr); /* 547 */
    int (*tcl_GetEnsembleMappingDict) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **mapDictPtr); /* 548 */
    int (*tcl_GetEnsembleUnknownHandler) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **unknownListPtr); /* 549 */
    int (*tcl_GetEnsembleFlags) (Tcl_Interp *interp, Tcl_Command token, int *flagsPtr); /* 550 */
    int (*tcl_GetEnsembleNamespace) (Tcl_Interp *interp, Tcl_Command token, Tcl_Namespace **namespacePtrPtr); /* 551 */
    void (*tcl_SetTimeProc) (Tcl_GetTimeProc *getProc, Tcl_ScaleTimeProc *scaleProc, ClientData clientData); /* 552 */
    void (*tcl_QueryTimeProc) (Tcl_GetTimeProc **getProc, Tcl_ScaleTimeProc **scaleProc, ClientData *clientData); /* 553 */
    Tcl_DriverThreadActionProc * (*tcl_ChannelThreadActionProc) (const Tcl_ChannelType *chanTypePtr); /* 554 */
    Tcl_Obj * (*tcl_NewBignumObj) (mp_int *value); /* 555 */
    Tcl_Obj * (*tcl_DbNewBignumObj) (mp_int *value, const char *file, int line); /* 556 */
    void (*tcl_SetBignumObj) (Tcl_Obj *obj, mp_int *value); /* 557 */
    int (*tcl_GetBignumFromObj) (Tcl_Interp *interp, Tcl_Obj *obj, mp_int *value); /* 558 */
    int (*tcl_TakeBignumFromObj) (Tcl_Interp *interp, Tcl_Obj *obj, mp_int *value); /* 559 */
    int (*tcl_TruncateChannel) (Tcl_Channel chan, Tcl_WideInt length); /* 560 */
    Tcl_DriverTruncateProc * (*tcl_ChannelTruncateProc) (const Tcl_ChannelType *chanTypePtr); /* 561 */
    void (*tcl_SetChannelErrorInterp) (Tcl_Interp *interp, Tcl_Obj *msg); /* 562 */
    void (*tcl_GetChannelErrorInterp) (Tcl_Interp *interp, Tcl_Obj **msg); /* 563 */
    void (*tcl_SetChannelError) (Tcl_Channel chan, Tcl_Obj *msg); /* 564 */
    void (*tcl_GetChannelError) (Tcl_Channel chan, Tcl_Obj **msg); /* 565 */
    int (*tcl_InitBignumFromDouble) (Tcl_Interp *interp, double initval, mp_int *toInit); /* 566 */
    Tcl_Obj * (*tcl_GetNamespaceUnknownHandler) (Tcl_Interp *interp, Tcl_Namespace *nsPtr); /* 567 */
    int (*tcl_SetNamespaceUnknownHandler) (Tcl_Interp *interp, Tcl_Namespace *nsPtr, Tcl_Obj *handlerPtr); /* 568 */
    int (*tcl_GetEncodingFromObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Encoding *encodingPtr); /* 569 */
    Tcl_Obj * (*tcl_GetEncodingSearchPath) (void); /* 570 */
    int (*tcl_SetEncodingSearchPath) (Tcl_Obj *searchPath); /* 571 */
    const char * (*tcl_GetEncodingNameFromEnvironment) (Tcl_DString *bufPtr); /* 572 */
    int (*tcl_PkgRequireProc) (Tcl_Interp *interp, const char *name, int objc, Tcl_Obj *const objv[], void *clientDataPtr); /* 573 */
    void (*tcl_AppendObjToErrorInfo) (Tcl_Interp *interp, Tcl_Obj *objPtr); /* 574 */
    void (*tcl_AppendLimitedToObj) (Tcl_Obj *objPtr, const char *bytes, int length, int limit, const char *ellipsis); /* 575 */
    Tcl_Obj * (*tcl_Format) (Tcl_Interp *interp, const char *format, int objc, Tcl_Obj *const objv[]); /* 576 */
    int (*tcl_AppendFormatToObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, const char *format, int objc, Tcl_Obj *const objv[]); /* 577 */
    Tcl_Obj * (*tcl_ObjPrintf) (const char *format, ...) TCL_FORMAT_PRINTF(1, 2); /* 578 */
    void (*tcl_AppendPrintfToObj) (Tcl_Obj *objPtr, const char *format, ...) TCL_FORMAT_PRINTF(2, 3); /* 579 */
    int (*tcl_CancelEval) (Tcl_Interp *interp, Tcl_Obj *resultObjPtr, ClientData clientData, int flags); /* 580 */
    int (*tcl_Canceled) (Tcl_Interp *interp, int flags); /* 581 */
    int (*tcl_CreatePipe) (Tcl_Interp *interp, Tcl_Channel *rchan, Tcl_Channel *wchan, int flags); /* 582 */
    Tcl_Command (*tcl_NRCreateCommand) (Tcl_Interp *interp, const char *cmdName, Tcl_ObjCmdProc *proc, Tcl_ObjCmdProc *nreProc, ClientData clientData, Tcl_CmdDeleteProc *deleteProc); /* 583 */
    int (*tcl_NREvalObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 584 */
    int (*tcl_NREvalObjv) (Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], int flags); /* 585 */
    int (*tcl_NRCmdSwap) (Tcl_Interp *interp, Tcl_Command cmd, int objc, Tcl_Obj *const objv[], int flags); /* 586 */
    void (*tcl_NRAddCallback) (Tcl_Interp *interp, Tcl_NRPostProc *postProcPtr, ClientData data0, ClientData data1, ClientData data2, ClientData data3); /* 587 */
    int (*tcl_NRCallObjProc) (Tcl_Interp *interp, Tcl_ObjCmdProc *objProc, ClientData clientData, int objc, Tcl_Obj *const objv[]); /* 588 */
    unsigned (*tcl_GetFSDeviceFromStat) (const Tcl_StatBuf *statPtr); /* 589 */
    unsigned (*tcl_GetFSInodeFromStat) (const Tcl_StatBuf *statPtr); /* 590 */
    unsigned (*tcl_GetModeFromStat) (const Tcl_StatBuf *statPtr); /* 591 */
    int (*tcl_GetLinkCountFromStat) (const Tcl_StatBuf *statPtr); /* 592 */
    int (*tcl_GetUserIdFromStat) (const Tcl_StatBuf *statPtr); /* 593 */
    int (*tcl_GetGroupIdFromStat) (const Tcl_StatBuf *statPtr); /* 594 */
    int (*tcl_GetDeviceTypeFromStat) (const Tcl_StatBuf *statPtr); /* 595 */
    Tcl_WideInt (*tcl_GetAccessTimeFromStat) (const Tcl_StatBuf *statPtr); /* 596 */
    Tcl_WideInt (*tcl_GetModificationTimeFromStat) (const Tcl_StatBuf *statPtr); /* 597 */
    Tcl_WideInt (*tcl_GetChangeTimeFromStat) (const Tcl_StatBuf *statPtr); /* 598 */
    Tcl_WideUInt (*tcl_GetSizeFromStat) (const Tcl_StatBuf *statPtr); /* 599 */
    Tcl_WideUInt (*tcl_GetBlocksFromStat) (const Tcl_StatBuf *statPtr); /* 600 */
    unsigned (*tcl_GetBlockSizeFromStat) (const Tcl_StatBuf *statPtr); /* 601 */
    int (*tcl_SetEnsembleParameterList) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj *paramList); /* 602 */
    int (*tcl_GetEnsembleParameterList) (Tcl_Interp *interp, Tcl_Command token, Tcl_Obj **paramListPtr); /* 603 */
    int (*tcl_ParseArgsObjv) (Tcl_Interp *interp, const Tcl_ArgvInfo *argTable, int *objcPtr, Tcl_Obj *const *objv, Tcl_Obj ***remObjv); /* 604 */
    int (*tcl_GetErrorLine) (Tcl_Interp *interp); /* 605 */
    void (*tcl_SetErrorLine) (Tcl_Interp *interp, int lineNum); /* 606 */
    void (*tcl_TransferResult) (Tcl_Interp *sourceInterp, int result, Tcl_Interp *targetInterp); /* 607 */
    int (*tcl_InterpActive) (Tcl_Interp *interp); /* 608 */
    void (*tcl_BackgroundException) (Tcl_Interp *interp, int code); /* 609 */
    int (*tcl_ZlibDeflate) (Tcl_Interp *interp, int format, Tcl_Obj *data, int level, Tcl_Obj *gzipHeaderDictObj); /* 610 */
    int (*tcl_ZlibInflate) (Tcl_Interp *interp, int format, Tcl_Obj *data, int buffersize, Tcl_Obj *gzipHeaderDictObj); /* 611 */
    unsigned int (*tcl_ZlibCRC32) (unsigned int crc, const unsigned char *buf, int len); /* 612 */
    unsigned int (*tcl_ZlibAdler32) (unsigned int adler, const unsigned char *buf, int len); /* 613 */
    int (*tcl_ZlibStreamInit) (Tcl_Interp *interp, int mode, int format, int level, Tcl_Obj *dictObj, Tcl_ZlibStream *zshandle); /* 614 */
    Tcl_Obj * (*tcl_ZlibStreamGetCommandName) (Tcl_ZlibStream zshandle); /* 615 */
    int (*tcl_ZlibStreamEof) (Tcl_ZlibStream zshandle); /* 616 */
    int (*tcl_ZlibStreamChecksum) (Tcl_ZlibStream zshandle); /* 617 */
    int (*tcl_ZlibStreamPut) (Tcl_ZlibStream zshandle, Tcl_Obj *data, int flush); /* 618 */
    int (*tcl_ZlibStreamGet) (Tcl_ZlibStream zshandle, Tcl_Obj *data, int count); /* 619 */
    int (*tcl_ZlibStreamClose) (Tcl_ZlibStream zshandle); /* 620 */
    int (*tcl_ZlibStreamReset) (Tcl_ZlibStream zshandle); /* 621 */
    void (*tcl_SetStartupScript) (Tcl_Obj *path, const char *encoding); /* 622 */
    Tcl_Obj * (*tcl_GetStartupScript) (const char **encodingPtr); /* 623 */
    int (*tcl_CloseEx) (Tcl_Interp *interp, Tcl_Channel chan, int flags); /* 624 */
    int (*tcl_NRExprObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, Tcl_Obj *resultPtr); /* 625 */
    int (*tcl_NRSubstObj) (Tcl_Interp *interp, Tcl_Obj *objPtr, int flags); /* 626 */
    int (*tcl_LoadFile) (Tcl_Interp *interp, Tcl_Obj *pathPtr, const char *const symv[], int flags, void *procPtrs, Tcl_LoadHandle *handlePtr); /* 627 */
    void * (*tcl_FindSymbol) (Tcl_Interp *interp, Tcl_LoadHandle handle, const char *symbol); /* 628 */
    int (*tcl_FSUnloadFile) (Tcl_Interp *interp, Tcl_LoadHandle handlePtr); /* 629 */
    void (*tcl_ZlibStreamSetCompressionDictionary) (Tcl_ZlibStream zhandle, Tcl_Obj *compressionDictionaryObj); /* 630 */
} TclStubs;

#ifdef __cplusplus
extern "C" {
#endif
extern const TclStubs *tclStubsPtr;
#ifdef __cplusplus
}
#endif

#if defined(USE_TCL_STUBS)

/*
 * Inline function declarations:
 */

#define Tcl_PkgProvideEx \
	(tclStubsPtr->tcl_PkgProvideEx) /* 0 */
#define Tcl_PkgRequireEx \
	(tclStubsPtr->tcl_PkgRequireEx) /* 1 */
#define Tcl_Panic \
	(tclStubsPtr->tcl_Panic) /* 2 */
#define Tcl_Alloc \
	(tclStubsPtr->tcl_Alloc) /* 3 */
#define Tcl_Free \
	(tclStubsPtr->tcl_Free) /* 4 */
#define Tcl_Realloc \
	(tclStubsPtr->tcl_Realloc) /* 5 */
#define Tcl_DbCkalloc \
	(tclStubsPtr->tcl_DbCkalloc) /* 6 */
#define Tcl_DbCkfree \
	(tclStubsPtr->tcl_DbCkfree) /* 7 */
#define Tcl_DbCkrealloc \
	(tclStubsPtr->tcl_DbCkrealloc) /* 8 */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
#define Tcl_CreateFileHandler \
	(tclStubsPtr->tcl_CreateFileHandler) /* 9 */
#endif /* UNIX */
#ifdef MAC_OSX_TCL /* MACOSX */
#define Tcl_CreateFileHandler \
	(tclStubsPtr->tcl_CreateFileHandler) /* 9 */
#endif /* MACOSX */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
#define Tcl_DeleteFileHandler \
	(tclStubsPtr->tcl_DeleteFileHandler) /* 10 */
#endif /* UNIX */
#ifdef MAC_OSX_TCL /* MACOSX */
#define Tcl_DeleteFileHandler \
	(tclStubsPtr->tcl_DeleteFileHandler) /* 10 */
#endif /* MACOSX */
#define Tcl_SetTimer \
	(tclStubsPtr->tcl_SetTimer) /* 11 */
#define Tcl_Sleep \
	(tclStubsPtr->tcl_Sleep) /* 12 */
#define Tcl_WaitForEvent \
	(tclStubsPtr->tcl_WaitForEvent) /* 13 */
#define Tcl_AppendAllObjTypes \
	(tclStubsPtr->tcl_AppendAllObjTypes) /* 14 */
#define Tcl_AppendStringsToObj \
	(tclStubsPtr->tcl_AppendStringsToObj) /* 15 */
#define Tcl_AppendToObj \
	(tclStubsPtr->tcl_AppendToObj) /* 16 */
#define Tcl_ConcatObj \
	(tclStubsPtr->tcl_ConcatObj) /* 17 */
#define Tcl_ConvertToType \
	(tclStubsPtr->tcl_ConvertToType) /* 18 */
#define Tcl_DbDecrRefCount \
	(tclStubsPtr->tcl_DbDecrRefCount) /* 19 */
#define Tcl_DbIncrRefCount \
	(tclStubsPtr->tcl_DbIncrRefCount) /* 20 */
#define Tcl_DbIsShared \
	(tclStubsPtr->tcl_DbIsShared) /* 21 */
#define Tcl_DbNewBooleanObj \
	(tclStubsPtr->tcl_DbNewBooleanObj) /* 22 */
#define Tcl_DbNewByteArrayObj \
	(tclStubsPtr->tcl_DbNewByteArrayObj) /* 23 */
#define Tcl_DbNewDoubleObj \
	(tclStubsPtr->tcl_DbNewDoubleObj) /* 24 */
#define Tcl_DbNewListObj \
	(tclStubsPtr->tcl_DbNewListObj) /* 25 */
#define Tcl_DbNewLongObj \
	(tclStubsPtr->tcl_DbNewLongObj) /* 26 */
#define Tcl_DbNewObj \
	(tclStubsPtr->tcl_DbNewObj) /* 27 */
#define Tcl_DbNewStringObj \
	(tclStubsPtr->tcl_DbNewStringObj) /* 28 */
#define Tcl_DuplicateObj \
	(tclStubsPtr->tcl_DuplicateObj) /* 29 */
#define TclFreeObj \
	(tclStubsPtr->tclFreeObj) /* 30 */
#define Tcl_GetBoolean \
	(tclStubsPtr->tcl_GetBoolean) /* 31 */
#define Tcl_GetBooleanFromObj \
	(tclStubsPtr->tcl_GetBooleanFromObj) /* 32 */
#define Tcl_GetByteArrayFromObj \
	(tclStubsPtr->tcl_GetByteArrayFromObj) /* 33 */
#define Tcl_GetDouble \
	(tclStubsPtr->tcl_GetDouble) /* 34 */
#define Tcl_GetDoubleFromObj \
	(tclStubsPtr->tcl_GetDoubleFromObj) /* 35 */
#define Tcl_GetIndexFromObj \
	(tclStubsPtr->tcl_GetIndexFromObj) /* 36 */
#define Tcl_GetInt \
	(tclStubsPtr->tcl_GetInt) /* 37 */
#define Tcl_GetIntFromObj \
	(tclStubsPtr->tcl_GetIntFromObj) /* 38 */
#define Tcl_GetLongFromObj \
	(tclStubsPtr->tcl_GetLongFromObj) /* 39 */
#define Tcl_GetObjType \
	(tclStubsPtr->tcl_GetObjType) /* 40 */
#define Tcl_GetStringFromObj \
	(tclStubsPtr->tcl_GetStringFromObj) /* 41 */
#define Tcl_InvalidateStringRep \
	(tclStubsPtr->tcl_InvalidateStringRep) /* 42 */
#define Tcl_ListObjAppendList \
	(tclStubsPtr->tcl_ListObjAppendList) /* 43 */
#define Tcl_ListObjAppendElement \
	(tclStubsPtr->tcl_ListObjAppendElement) /* 44 */
#define Tcl_ListObjGetElements \
	(tclStubsPtr->tcl_ListObjGetElements) /* 45 */
#define Tcl_ListObjIndex \
	(tclStubsPtr->tcl_ListObjIndex) /* 46 */
#define Tcl_ListObjLength \
	(tclStubsPtr->tcl_ListObjLength) /* 47 */
#define Tcl_ListObjReplace \
	(tclStubsPtr->tcl_ListObjReplace) /* 48 */
#define Tcl_NewBooleanObj \
	(tclStubsPtr->tcl_NewBooleanObj) /* 49 */
#define Tcl_NewByteArrayObj \
	(tclStubsPtr->tcl_NewByteArrayObj) /* 50 */
#define Tcl_NewDoubleObj \
	(tclStubsPtr->tcl_NewDoubleObj) /* 51 */
#define Tcl_NewIntObj \
	(tclStubsPtr->tcl_NewIntObj) /* 52 */
#define Tcl_NewListObj \
	(tclStubsPtr->tcl_NewListObj) /* 53 */
#define Tcl_NewLongObj \
	(tclStubsPtr->tcl_NewLongObj) /* 54 */
#define Tcl_NewObj \
	(tclStubsPtr->tcl_NewObj) /* 55 */
#define Tcl_NewStringObj \
	(tclStubsPtr->tcl_NewStringObj) /* 56 */
#define Tcl_SetBooleanObj \
	(tclStubsPtr->tcl_SetBooleanObj) /* 57 */
#define Tcl_SetByteArrayLength \
	(tclStubsPtr->tcl_SetByteArrayLength) /* 58 */
#define Tcl_SetByteArrayObj \
	(tclStubsPtr->tcl_SetByteArrayObj) /* 59 */
#define Tcl_SetDoubleObj \
	(tclStubsPtr->tcl_SetDoubleObj) /* 60 */
#define Tcl_SetIntObj \
	(tclStubsPtr->tcl_SetIntObj) /* 61 */
#define Tcl_SetListObj \
	(tclStubsPtr->tcl_SetListObj) /* 62 */
#define Tcl_SetLongObj \
	(tclStubsPtr->tcl_SetLongObj) /* 63 */
#define Tcl_SetObjLength \
	(tclStubsPtr->tcl_SetObjLength) /* 64 */
#define Tcl_SetStringObj \
	(tclStubsPtr->tcl_SetStringObj) /* 65 */
#define Tcl_AddErrorInfo \
	(tclStubsPtr->tcl_AddErrorInfo) /* 66 */
#define Tcl_AddObjErrorInfo \
	(tclStubsPtr->tcl_AddObjErrorInfo) /* 67 */
#define Tcl_AllowExceptions \
	(tclStubsPtr->tcl_AllowExceptions) /* 68 */
#define Tcl_AppendElement \
	(tclStubsPtr->tcl_AppendElement) /* 69 */
#define Tcl_AppendResult \
	(tclStubsPtr->tcl_AppendResult) /* 70 */
#define Tcl_AsyncCreate \
	(tclStubsPtr->tcl_AsyncCreate) /* 71 */
#define Tcl_AsyncDelete \
	(tclStubsPtr->tcl_AsyncDelete) /* 72 */
#define Tcl_AsyncInvoke \
	(tclStubsPtr->tcl_AsyncInvoke) /* 73 */
#define Tcl_AsyncMark \
	(tclStubsPtr->tcl_AsyncMark) /* 74 */
#define Tcl_AsyncReady \
	(tclStubsPtr->tcl_AsyncReady) /* 75 */
#define Tcl_BackgroundError \
	(tclStubsPtr->tcl_BackgroundError) /* 76 */
#define Tcl_Backslash \
	(tclStubsPtr->tcl_Backslash) /* 77 */
#define Tcl_BadChannelOption \
	(tclStubsPtr->tcl_BadChannelOption) /* 78 */
#define Tcl_CallWhenDeleted \
	(tclStubsPtr->tcl_CallWhenDeleted) /* 79 */
#define Tcl_CancelIdleCall \
	(tclStubsPtr->tcl_CancelIdleCall) /* 80 */
#define Tcl_Close \
	(tclStubsPtr->tcl_Close) /* 81 */
#define Tcl_CommandComplete \
	(tclStubsPtr->tcl_CommandComplete) /* 82 */
#define Tcl_Concat \
	(tclStubsPtr->tcl_Concat) /* 83 */
#define Tcl_ConvertElement \
	(tclStubsPtr->tcl_ConvertElement) /* 84 */
#define Tcl_ConvertCountedElement \
	(tclStubsPtr->tcl_ConvertCountedElement) /* 85 */
#define Tcl_CreateAlias \
	(tclStubsPtr->tcl_CreateAlias) /* 86 */
#define Tcl_CreateAliasObj \
	(tclStubsPtr->tcl_CreateAliasObj) /* 87 */
#define Tcl_CreateChannel \
	(tclStubsPtr->tcl_CreateChannel) /* 88 */
#define Tcl_CreateChannelHandler \
	(tclStubsPtr->tcl_CreateChannelHandler) /* 89 */
#define Tcl_CreateCloseHandler \
	(tclStubsPtr->tcl_CreateCloseHandler) /* 90 */
#define Tcl_CreateCommand \
	(tclStubsPtr->tcl_CreateCommand) /* 91 */
#define Tcl_CreateEventSource \
	(tclStubsPtr->tcl_CreateEventSource) /* 92 */
#define Tcl_CreateExitHandler \
	(tclStubsPtr->tcl_CreateExitHandler) /* 93 */
#define Tcl_CreateInterp \
	(tclStubsPtr->tcl_CreateInterp) /* 94 */
#define Tcl_CreateMathFunc \
	(tclStubsPtr->tcl_CreateMathFunc) /* 95 */
#define Tcl_CreateObjCommand \
	(tclStubsPtr->tcl_CreateObjCommand) /* 96 */
#define Tcl_CreateSlave \
	(tclStubsPtr->tcl_CreateSlave) /* 97 */
#define Tcl_CreateTimerHandler \
	(tclStubsPtr->tcl_CreateTimerHandler) /* 98 */
#define Tcl_CreateTrace \
	(tclStubsPtr->tcl_CreateTrace) /* 99 */
#define Tcl_DeleteAssocData \
	(tclStubsPtr->tcl_DeleteAssocData) /* 100 */
#define Tcl_DeleteChannelHandler \
	(tclStubsPtr->tcl_DeleteChannelHandler) /* 101 */
#define Tcl_DeleteCloseHandler \
	(tclStubsPtr->tcl_DeleteCloseHandler) /* 102 */
#define Tcl_DeleteCommand \
	(tclStubsPtr->tcl_DeleteCommand) /* 103 */
#define Tcl_DeleteCommandFromToken \
	(tclStubsPtr->tcl_DeleteCommandFromToken) /* 104 */
#define Tcl_DeleteEvents \
	(tclStubsPtr->tcl_DeleteEvents) /* 105 */
#define Tcl_DeleteEventSource \
	(tclStubsPtr->tcl_DeleteEventSource) /* 106 */
#define Tcl_DeleteExitHandler \
	(tclStubsPtr->tcl_DeleteExitHandler) /* 107 */
#define Tcl_DeleteHashEntry \
	(tclStubsPtr->tcl_DeleteHashEntry) /* 108 */
#define Tcl_DeleteHashTable \
	(tclStubsPtr->tcl_DeleteHashTable) /* 109 */
#define Tcl_DeleteInterp \
	(tclStubsPtr->tcl_DeleteInterp) /* 110 */
#define Tcl_DetachPids \
	(tclStubsPtr->tcl_DetachPids) /* 111 */
#define Tcl_DeleteTimerHandler \
	(tclStubsPtr->tcl_DeleteTimerHandler) /* 112 */
#define Tcl_DeleteTrace \
	(tclStubsPtr->tcl_DeleteTrace) /* 113 */
#define Tcl_DontCallWhenDeleted \
	(tclStubsPtr->tcl_DontCallWhenDeleted) /* 114 */
#define Tcl_DoOneEvent \
	(tclStubsPtr->tcl_DoOneEvent) /* 115 */
#define Tcl_DoWhenIdle \
	(tclStubsPtr->tcl_DoWhenIdle) /* 116 */
#define Tcl_DStringAppend \
	(tclStubsPtr->tcl_DStringAppend) /* 117 */
#define Tcl_DStringAppendElement \
	(tclStubsPtr->tcl_DStringAppendElement) /* 118 */
#define Tcl_DStringEndSublist \
	(tclStubsPtr->tcl_DStringEndSublist) /* 119 */
#define Tcl_DStringFree \
	(tclStubsPtr->tcl_DStringFree) /* 120 */
#define Tcl_DStringGetResult \
	(tclStubsPtr->tcl_DStringGetResult) /* 121 */
#define Tcl_DStringInit \
	(tclStubsPtr->tcl_DStringInit) /* 122 */
#define Tcl_DStringResult \
	(tclStubsPtr->tcl_DStringResult) /* 123 */
#define Tcl_DStringSetLength \
	(tclStubsPtr->tcl_DStringSetLength) /* 124 */
#define Tcl_DStringStartSublist \
	(tclStubsPtr->tcl_DStringStartSublist) /* 125 */
#define Tcl_Eof \
	(tclStubsPtr->tcl_Eof) /* 126 */
#define Tcl_ErrnoId \
	(tclStubsPtr->tcl_ErrnoId) /* 127 */
#define Tcl_ErrnoMsg \
	(tclStubsPtr->tcl_ErrnoMsg) /* 128 */
#define Tcl_Eval \
	(tclStubsPtr->tcl_Eval) /* 129 */
#define Tcl_EvalFile \
	(tclStubsPtr->tcl_EvalFile) /* 130 */
#define Tcl_EvalObj \
	(tclStubsPtr->tcl_EvalObj) /* 131 */
#define Tcl_EventuallyFree \
	(tclStubsPtr->tcl_EventuallyFree) /* 132 */
#define Tcl_Exit \
	(tclStubsPtr->tcl_Exit) /* 133 */
#define Tcl_ExposeCommand \
	(tclStubsPtr->tcl_ExposeCommand) /* 134 */
#define Tcl_ExprBoolean \
	(tclStubsPtr->tcl_ExprBoolean) /* 135 */
#define Tcl_ExprBooleanObj \
	(tclStubsPtr->tcl_ExprBooleanObj) /* 136 */
#define Tcl_ExprDouble \
	(tclStubsPtr->tcl_ExprDouble) /* 137 */
#define Tcl_ExprDoubleObj \
	(tclStubsPtr->tcl_ExprDoubleObj) /* 138 */
#define Tcl_ExprLong \
	(tclStubsPtr->tcl_ExprLong) /* 139 */
#define Tcl_ExprLongObj \
	(tclStubsPtr->tcl_ExprLongObj) /* 140 */
#define Tcl_ExprObj \
	(tclStubsPtr->tcl_ExprObj) /* 141 */
#define Tcl_ExprString \
	(tclStubsPtr->tcl_ExprString) /* 142 */
#define Tcl_Finalize \
	(tclStubsPtr->tcl_Finalize) /* 143 */
#define Tcl_FindExecutable \
	(tclStubsPtr->tcl_FindExecutable) /* 144 */
#define Tcl_FirstHashEntry \
	(tclStubsPtr->tcl_FirstHashEntry) /* 145 */
#define Tcl_Flush \
	(tclStubsPtr->tcl_Flush) /* 146 */
#define Tcl_FreeResult \
	(tclStubsPtr->tcl_FreeResult) /* 147 */
#define Tcl_GetAlias \
	(tclStubsPtr->tcl_GetAlias) /* 148 */
#define Tcl_GetAliasObj \
	(tclStubsPtr->tcl_GetAliasObj) /* 149 */
#define Tcl_GetAssocData \
	(tclStubsPtr->tcl_GetAssocData) /* 150 */
#define Tcl_GetChannel \
	(tclStubsPtr->tcl_GetChannel) /* 151 */
#define Tcl_GetChannelBufferSize \
	(tclStubsPtr->tcl_GetChannelBufferSize) /* 152 */
#define Tcl_GetChannelHandle \
	(tclStubsPtr->tcl_GetChannelHandle) /* 153 */
#define Tcl_GetChannelInstanceData \
	(tclStubsPtr->tcl_GetChannelInstanceData) /* 154 */
#define Tcl_GetChannelMode \
	(tclStubsPtr->tcl_GetChannelMode) /* 155 */
#define Tcl_GetChannelName \
	(tclStubsPtr->tcl_GetChannelName) /* 156 */
#define Tcl_GetChannelOption \
	(tclStubsPtr->tcl_GetChannelOption) /* 157 */
#define Tcl_GetChannelType \
	(tclStubsPtr->tcl_GetChannelType) /* 158 */
#define Tcl_GetCommandInfo \
	(tclStubsPtr->tcl_GetCommandInfo) /* 159 */
#define Tcl_GetCommandName \
	(tclStubsPtr->tcl_GetCommandName) /* 160 */
#define Tcl_GetErrno \
	(tclStubsPtr->tcl_GetErrno) /* 161 */
#define Tcl_GetHostName \
	(tclStubsPtr->tcl_GetHostName) /* 162 */
#define Tcl_GetInterpPath \
	(tclStubsPtr->tcl_GetInterpPath) /* 163 */
#define Tcl_GetMaster \
	(tclStubsPtr->tcl_GetMaster) /* 164 */
#define Tcl_GetNameOfExecutable \
	(tclStubsPtr->tcl_GetNameOfExecutable) /* 165 */
#define Tcl_GetObjResult \
	(tclStubsPtr->tcl_GetObjResult) /* 166 */
#if !defined(__WIN32__) && !defined(MAC_OSX_TCL) /* UNIX */
#define Tcl_GetOpenFile \
	(tclStubsPtr->tcl_GetOpenFile) /* 167 */
#endif /* UNIX */
#ifdef MAC_OSX_TCL /* MACOSX */
#define Tcl_GetOpenFile \
	(tclStubsPtr->tcl_GetOpenFile) /* 167 */
#endif /* MACOSX */
#define Tcl_GetPathType \
	(tclStubsPtr->tcl_GetPathType) /* 168 */
#define Tcl_Gets \
	(tclStubsPtr->tcl_Gets) /* 169 */
#define Tcl_GetsObj \
	(tclStubsPtr->tcl_GetsObj) /* 170 */
#define Tcl_GetServiceMode \
	(tclStubsPtr->tcl_GetServiceMode) /* 171 */
#define Tcl_GetSlave \
	(tclStubsPtr->tcl_GetSlave) /* 172 */
#define Tcl_GetStdChannel \
	(tclStubsPtr->tcl_GetStdChannel) /* 173 */
#define Tcl_GetStringResult \
	(tclStubsPtr->tcl_GetStringResult) /* 174 */
#define Tcl_GetVar \
	(tclStubsPtr->tcl_GetVar) /* 175 */
#define Tcl_GetVar2 \
	(tclStubsPtr->tcl_GetVar2) /* 176 */
#define Tcl_GlobalEval \
	(tclStubsPtr->tcl_GlobalEval) /* 177 */
#define Tcl_GlobalEvalObj \
	(tclStubsPtr->tcl_GlobalEvalObj) /* 178 */
#define Tcl_HideCommand \
	(tclStubsPtr->tcl_HideCommand) /* 179 */
#define Tcl_Init \
	(tclStubsPtr->tcl_Init) /* 180 */
#define Tcl_InitHashTable \
	(tclStubsPtr->tcl_InitHashTable) /* 181 */
#define Tcl_InputBlocked \
	(tclStubsPtr->tcl_InputBlocked) /* 182 */
#define Tcl_InputBuffered \
	(tclStubsPtr->tcl_InputBuffered) /* 183 */
#define Tcl_InterpDeleted \
	(tclStubsPtr->tcl_InterpDeleted) /* 184 */
#define Tcl_IsSafe \
	(tclStubsPtr->tcl_IsSafe) /* 185 */
#define Tcl_JoinPath \
	(tclStubsPtr->tcl_JoinPath) /* 186 */
#define Tcl_LinkVar \
	(tclStubsPtr->tcl_LinkVar) /* 187 */
/* Slot 188 is reserved */
#define Tcl_MakeFileChannel \
	(tclStubsPtr->tcl_MakeFileChannel) /* 189 */
#define Tcl_MakeSafe \
	(tclStubsPtr->tcl_MakeSafe) /* 190 */
#define Tcl_MakeTcpClientChannel \
	(tclStubsPtr->tcl_MakeTcpClientChannel) /* 191 */
#define Tcl_Merge \
	(tclStubsPtr->tcl_Merge) /* 192 */
#define Tcl_NextHashEntry \
	(tclStubsPtr->tcl_NextHashEntry) /* 193 */
#define Tcl_NotifyChannel \
	(tclStubsPtr->tcl_NotifyChannel) /* 194 */
#define Tcl_ObjGetVar2 \
	(tclStubsPtr->tcl_ObjGetVar2) /* 195 */
#define Tcl_ObjSetVar2 \
	(tclStubsPtr->tcl_ObjSetVar2) /* 196 */
#define Tcl_OpenCommandChannel \
	(tclStubsPtr->tcl_OpenCommandChannel) /* 197 */
#define Tcl_OpenFileChannel \
	(tclStubsPtr->tcl_OpenFileChannel) /* 198 */
#define Tcl_OpenTcpClient \
	(tclStubsPtr->tcl_OpenTcpClient) /* 199 */
#define Tcl_OpenTcpServer \
	(tclStubsPtr->tcl_OpenTcpServer) /* 200 */
#define Tcl_Preserve \
	(tclStubsPtr->tcl_Preserve) /* 201 */
#define Tcl_PrintDouble \
	(tclStubsPtr->tcl_PrintDouble) /* 202 */
#define Tcl_PutEnv \
	(tclStubsPtr->tcl_PutEnv) /* 203 */
#define Tcl_PosixError \
	(tclStubsPtr->tcl_PosixError) /* 204 */
#define Tcl_QueueEvent \
	(tclStubsPtr->tcl_QueueEvent) /* 205 */
#define Tcl_Read \
	(tclStubsPtr->tcl_Read) /* 206 */
#define Tcl_ReapDetachedProcs \
	(tclStubsPtr->tcl_ReapDetachedProcs) /* 207 */
#define Tcl_RecordAndEval \
	(tclStubsPtr->tcl_RecordAndEval) /* 208 */
#define Tcl_RecordAndEvalObj \
	(tclStubsPtr->tcl_RecordAndEvalObj) /* 209 */
#define Tcl_RegisterChannel \
	(tclStubsPtr->tcl_RegisterChannel) /* 210 */
#define Tcl_RegisterObjType \
	(tclStubsPtr->tcl_RegisterObjType) /* 211 */
#define Tcl_RegExpCompile \
	(tclStubsPtr->tcl_RegExpCompile) /* 212 */
#define Tcl_RegExpExec \
	(tclStubsPtr->tcl_RegExpExec) /* 213 */
#define Tcl_RegExpMatch \
	(tclStubsPtr->tcl_RegExpMatch) /* 214 */
#define Tcl_RegExpRange \
	(tclStubsPtr->tcl_RegExpRange) /* 215 */
#define Tcl_Release \
	(tclStubsPtr->tcl_Release) /* 216 */
#define Tcl_ResetResult \
	(tclStubsPtr->tcl_ResetResult) /* 217 */
#define Tcl_ScanElement \
	(tclStubsPtr->tcl_ScanElement) /* 218 */
#define Tcl_ScanCountedElement \
	(tclStubsPtr->tcl_ScanCountedElement) /* 219 */
#define Tcl_SeekOld \
	(tclStubsPtr->tcl_SeekOld) /* 220 */
#define Tcl_ServiceAll \
	(tclStubsPtr->tcl_ServiceAll) /* 221 */
#define Tcl_ServiceEvent \
	(tclStubsPtr->tcl_ServiceEvent) /* 222 */
#define Tcl_SetAssocData \
	(tclStubsPtr->tcl_SetAssocData) /* 223 */
#define Tcl_SetChannelBufferSize \
	(tclStubsPtr->tcl_SetChannelBufferSize) /* 224 */
#define Tcl_SetChannelOption \
	(tclStubsPtr->tcl_SetChannelOption) /* 225 */
#define Tcl_SetCommandInfo \
	(tclStubsPtr->tcl_SetCommandInfo) /* 226 */
#define Tcl_SetErrno \
	(tclStubsPtr->tcl_SetErrno) /* 227 */
#define Tcl_SetErrorCode \
	(tclStubsPtr->tcl_SetErrorCode) /* 228 */
#define Tcl_SetMaxBlockTime \
	(tclStubsPtr->tcl_SetMaxBlockTime) /* 229 */
#define Tcl_SetPanicProc \
	(tclStubsPtr->tcl_SetPanicProc) /* 230 */
#define Tcl_SetRecursionLimit \
	(tclStubsPtr->tcl_SetRecursionLimit) /* 231 */
#define Tcl_SetResult \
	(tclStubsPtr->tcl_SetResult) /* 232 */
#define Tcl_SetServiceMode \
	(tclStubsPtr->tcl_SetServiceMode) /* 233 */
#define Tcl_SetObjErrorCode \
	(tclStubsPtr->tcl_SetObjErrorCode) /* 234 */
#define Tcl_SetObjResult \
	(tclStubsPtr->tcl_SetObjResult) /* 235 */
#define Tcl_SetStdChannel \
	(tclStubsPtr->tcl_SetStdChannel) /* 236 */
#define Tcl_SetVar \
	(tclStubsPtr->tcl_SetVar) /* 237 */
#define Tcl_SetVar2 \
	(tclStubsPtr->tcl_SetVar2) /* 238 */
#define Tcl_SignalId \
	(tclStubsPtr->tcl_SignalId) /* 239 */
#define Tcl_SignalMsg \
	(tclStubsPtr->tcl_SignalMsg) /* 240 */
#define Tcl_SourceRCFile \
	(tclStubsPtr->tcl_SourceRCFile) /* 241 */
#define Tcl_SplitList \
	(tclStubsPtr->tcl_SplitList) /* 242 */
#define Tcl_SplitPath \
	(tclStubsPtr->tcl_SplitPath) /* 243 */
#define Tcl_StaticPackage \
	(tclStubsPtr->tcl_StaticPackage) /* 244 */
#define Tcl_StringMatch \
	(tclStubsPtr->tcl_StringMatch) /* 245 */
#define Tcl_TellOld \
	(tclStubsPtr->tcl_TellOld) /* 246 */
#define Tcl_TraceVar \
	(tclStubsPtr->tcl_TraceVar) /* 247 */
#define Tcl_TraceVar2 \
	(tclStubsPtr->tcl_TraceVar2) /* 248 */
#define Tcl_TranslateFileName \
	(tclStubsPtr->tcl_TranslateFileName) /* 249 */
#define Tcl_Ungets \
	(tclStubsPtr->tcl_Ungets) /* 250 */
#define Tcl_UnlinkVar \
	(tclStubsPtr->tcl_UnlinkVar) /* 251 */
#define Tcl_UnregisterChannel \
	(tclStubsPtr->tcl_UnregisterChannel) /* 252 */
#define Tcl_UnsetVar \
	(tclStubsPtr->tcl_UnsetVar) /* 253 */
#define Tcl_UnsetVar2 \
	(tclStubsPtr->tcl_UnsetVar2) /* 254 */
#define Tcl_UntraceVar \
	(tclStubsPtr->tcl_UntraceVar) /* 255 */
#define Tcl_UntraceVar2 \
	(tclStubsPtr->tcl_UntraceVar2) /* 256 */
#define Tcl_UpdateLinkedVar \
	(tclStubsPtr->tcl_UpdateLinkedVar) /* 257 */
#define Tcl_UpVar \
	(tclStubsPtr->tcl_UpVar) /* 258 */
#define Tcl_UpVar2 \
	(tclStubsPtr->tcl_UpVar2) /* 259 */
#define Tcl_VarEval \
	(tclStubsPtr->tcl_VarEval) /* 260 */
#define Tcl_VarTraceInfo \
	(tclStubsPtr->tcl_VarTraceInfo) /* 261 */
#define Tcl_VarTraceInfo2 \
	(tclStubsPtr->tcl_VarTraceInfo2) /* 262 */
#define Tcl_Write \
	(tclStubsPtr->tcl_Write) /* 263 */
#define Tcl_WrongNumArgs \
	(tclStubsPtr->tcl_WrongNumArgs) /* 264 */
#define Tcl_DumpActiveMemory \
	(tclStubsPtr->tcl_DumpActiveMemory) /* 265 */
#define Tcl_ValidateAllMemory \
	(tclStubsPtr->tcl_ValidateAllMemory) /* 266 */
#define Tcl_AppendResultVA \
	(tclStubsPtr->tcl_AppendResultVA) /* 267 */
#define Tcl_AppendStringsToObjVA \
	(tclStubsPtr->tcl_AppendStringsToObjVA) /* 268 */
#define Tcl_HashStats \
	(tclStubsPtr->tcl_HashStats) /* 269 */
#define Tcl_ParseVar \
	(tclStubsPtr->tcl_ParseVar) /* 270 */
#define Tcl_PkgPresent \
	(tclStubsPtr->tcl_PkgPresent) /* 271 */
#define Tcl_PkgPresentEx \
	(tclStubsPtr->tcl_PkgPresentEx) /* 272 */
#define Tcl_PkgProvide \
	(tclStubsPtr->tcl_PkgProvide) /* 273 */
#define Tcl_PkgRequire \
	(tclStubsPtr->tcl_PkgRequire) /* 274 */
#define Tcl_SetErrorCodeVA \
	(tclStubsPtr->tcl_SetErrorCodeVA) /* 275 */
#define Tcl_VarEvalVA \
	(tclStubsPtr->tcl_VarEvalVA) /* 276 */
#define Tcl_WaitPid \
	(tclStubsPtr->tcl_WaitPid) /* 277 */
#define Tcl_PanicVA \
	(tclStubsPtr->tcl_PanicVA) /* 278 */
#define Tcl_GetVersion \
	(tclStubsPtr->tcl_GetVersion) /* 279 */
#define Tcl_InitMemory \
	(tclStubsPtr->tcl_InitMemory) /* 280 */
#define Tcl_StackChannel \
	(tclStubsPtr->tcl_StackChannel) /* 281 */
#define Tcl_UnstackChannel \
	(tclStubsPtr->tcl_UnstackChannel) /* 282 */
#define Tcl_GetStackedChannel \
	(tclStubsPtr->tcl_GetStackedChannel) /* 283 */
#define Tcl_SetMainLoop \
	(tclStubsPtr->tcl_SetMainLoop) /* 284 */
/* Slot 285 is reserved */
#define Tcl_AppendObjToObj \
	(tclStubsPtr->tcl_AppendObjToObj) /* 286 */
#define Tcl_CreateEncoding \
	(tclStubsPtr->tcl_CreateEncoding) /* 287 */
#define Tcl_CreateThreadExitHandler \
	(tclStubsPtr->tcl_CreateThreadExitHandler) /* 288 */
#define Tcl_DeleteThreadExitHandler \
	(tclStubsPtr->tcl_DeleteThreadExitHandler) /* 289 */
#define Tcl_DiscardResult \
	(tclStubsPtr->tcl_DiscardResult) /* 290 */
#define Tcl_EvalEx \
	(tclStubsPtr->tcl_EvalEx) /* 291 */
#define Tcl_EvalObjv \
	(tclStubsPtr->tcl_EvalObjv) /* 292 */
#define Tcl_EvalObjEx \
	(tclStubsPtr->tcl_EvalObjEx) /* 293 */
#define Tcl_ExitThread \
	(tclStubsPtr->tcl_ExitThread) /* 294 */
#define Tcl_ExternalToUtf \
	(tclStubsPtr->tcl_ExternalToUtf) /* 295 */
#define Tcl_ExternalToUtfDString \
	(tclStubsPtr->tcl_ExternalToUtfDString) /* 296 */
#define Tcl_FinalizeThread \
	(tclStubsPtr->tcl_FinalizeThread) /* 297 */
#define Tcl_FinalizeNotifier \
	(tclStubsPtr->tcl_FinalizeNotifier) /* 298 */
#define Tcl_FreeEncoding \
	(tclStubsPtr->tcl_FreeEncoding) /* 299 */
#define Tcl_GetCurrentThread \
	(tclStubsPtr->tcl_GetCurrentThread) /* 300 */
#define Tcl_GetEncoding \
	(tclStubsPtr->tcl_GetEncoding) /* 301 */
#define Tcl_GetEncodingName \
	(tclStubsPtr->tcl_GetEncodingName) /* 302 */
#define Tcl_GetEncodingNames \
	(tclStubsPtr->tcl_GetEncodingNames) /* 303 */
#define Tcl_GetIndexFromObjStruct \
	(tclStubsPtr->tcl_GetIndexFromObjStruct) /* 304 */
#define Tcl_GetThreadData \
	(tclStubsPtr->tcl_GetThreadData) /* 305 */
#define Tcl_GetVar2Ex \
	(tclStubsPtr->tcl_GetVar2Ex) /* 306 */
#define Tcl_InitNotifier \
	(tclStubsPtr->tcl_InitNotifier) /* 307 */
#define Tcl_MutexLock \
	(tclStubsPtr->tcl_MutexLock) /* 308 */
#define Tcl_MutexUnlock \
	(tclStubsPtr->tcl_MutexUnlock) /* 309 */
#define Tcl_ConditionNotify \
	(tclStubsPtr->tcl_ConditionNotify) /* 310 */
#define Tcl_ConditionWait \
	(tclStubsPtr->tcl_ConditionWait) /* 311 */
#define Tcl_NumUtfChars \
	(tclStubsPtr->tcl_NumUtfChars) /* 312 */
#define Tcl_ReadChars \
	(tclStubsPtr->tcl_ReadChars) /* 313 */
#define Tcl_RestoreResult \
	(tclStubsPtr->tcl_RestoreResult) /* 314 */
#define Tcl_SaveResult \
	(tclStubsPtr->tcl_SaveResult) /* 315 */
#define Tcl_SetSystemEncoding \
	(tclStubsPtr->tcl_SetSystemEncoding) /* 316 */
#define Tcl_SetVar2Ex \
	(tclStubsPtr->tcl_SetVar2Ex) /* 317 */
#define Tcl_ThreadAlert \
	(tclStubsPtr->tcl_ThreadAlert) /* 318 */
#define Tcl_ThreadQueueEvent \
	(tclStubsPtr->tcl_ThreadQueueEvent) /* 319 */
#define Tcl_UniCharAtIndex \
	(tclStubsPtr->tcl_UniCharAtIndex) /* 320 */
#define Tcl_UniCharToLower \
	(tclStubsPtr->tcl_UniCharToLower) /* 321 */
#define Tcl_UniCharToTitle \
	(tclStubsPtr->tcl_UniCharToTitle) /* 322 */
#define Tcl_UniCharToUpper \
	(tclStubsPtr->tcl_UniCharToUpper) /* 323 */
#define Tcl_UniCharToUtf \
	(tclStubsPtr->tcl_UniCharToUtf) /* 324 */
#define Tcl_UtfAtIndex \
	(tclStubsPtr->tcl_UtfAtIndex) /* 325 */
#define Tcl_UtfCharComplete \
	(tclStubsPtr->tcl_UtfCharComplete) /* 326 */
#define Tcl_UtfBackslash \
	(tclStubsPtr->tcl_UtfBackslash) /* 327 */
#define Tcl_UtfFindFirst \
	(tclStubsPtr->tcl_UtfFindFirst) /* 328 */
#define Tcl_UtfFindLast \
	(tclStubsPtr->tcl_UtfFindLast) /* 329 */
#define Tcl_UtfNext \
	(tclStubsPtr->tcl_UtfNext) /* 330 */
#define Tcl_UtfPrev \
	(tclStubsPtr->tcl_UtfPrev) /* 331 */
#define Tcl_UtfToExternal \
	(tclStubsPtr->tcl_UtfToExternal) /* 332 */
#define Tcl_UtfToExternalDString \
	(tclStubsPtr->tcl_UtfToExternalDString) /* 333 */
#define Tcl_UtfToLower \
	(tclStubsPtr->tcl_UtfToLower) /* 334 */
#define Tcl_UtfToTitle \
	(tclStubsPtr->tcl_UtfToTitle) /* 335 */
#define Tcl_UtfToUniChar \
	(tclStubsPtr->tcl_UtfToUniChar) /* 336 */
#define Tcl_UtfToUpper \
	(tclStubsPtr->tcl_UtfToUpper) /* 337 */
#define Tcl_WriteChars \
	(tclStubsPtr->tcl_WriteChars) /* 338 */
#define Tcl_WriteObj \
	(tclStubsPtr->tcl_WriteObj) /* 339 */
#define Tcl_GetString \
	(tclStubsPtr->tcl_GetString) /* 340 */
#define Tcl_GetDefaultEncodingDir \
	(tclStubsPtr->tcl_GetDefaultEncodingDir) /* 341 */
#define Tcl_SetDefaultEncodingDir \
	(tclStubsPtr->tcl_SetDefaultEncodingDir) /* 342 */
#define Tcl_AlertNotifier \
	(tclStubsPtr->tcl_AlertNotifier) /* 343 */
#define Tcl_ServiceModeHook \
	(tclStubsPtr->tcl_ServiceModeHook) /* 344 */
#define Tcl_UniCharIsAlnum \
	(tclStubsPtr->tcl_UniCharIsAlnum) /* 345 */
#define Tcl_UniCharIsAlpha \
	(tclStubsPtr->tcl_UniCharIsAlpha) /* 346 */
#define Tcl_UniCharIsDigit \
	(tclStubsPtr->tcl_UniCharIsDigit) /* 347 */
#define Tcl_UniCharIsLower \
	(tclStubsPtr->tcl_UniCharIsLower) /* 348 */
#define Tcl_UniCharIsSpace \
	(tclStubsPtr->tcl_UniCharIsSpace) /* 349 */
#define Tcl_UniCharIsUpper \
	(tclStubsPtr->tcl_UniCharIsUpper) /* 350 */
#define Tcl_UniCharIsWordChar \
	(tclStubsPtr->tcl_UniCharIsWordChar) /* 351 */
#define Tcl_UniCharLen \
	(tclStubsPtr->tcl_UniCharLen) /* 352 */
#define Tcl_UniCharNcmp \
	(tclStubsPtr->tcl_UniCharNcmp) /* 353 */
#define Tcl_UniCharToUtfDString \
	(tclStubsPtr->tcl_UniCharToUtfDString) /* 354 */
#define Tcl_UtfToUniCharDString \
	(tclStubsPtr->tcl_UtfToUniCharDString) /* 355 */
#define Tcl_GetRegExpFromObj \
	(tclStubsPtr->tcl_GetRegExpFromObj) /* 356 */
#define Tcl_EvalTokens \
	(tclStubsPtr->tcl_EvalTokens) /* 357 */
#define Tcl_FreeParse \
	(tclStubsPtr->tcl_FreeParse) /* 358 */
#define Tcl_LogCommandInfo \
	(tclStubsPtr->tcl_LogCommandInfo) /* 359 */
#define Tcl_ParseBraces \
	(tclStubsPtr->tcl_ParseBraces) /* 360 */
#define Tcl_ParseCommand \
	(tclStubsPtr->tcl_ParseCommand) /* 361 */
#define Tcl_ParseExpr \
	(tclStubsPtr->tcl_ParseExpr) /* 362 */
#define Tcl_ParseQuotedString \
	(tclStubsPtr->tcl_ParseQuotedString) /* 363 */
#define Tcl_ParseVarName \
	(tclStubsPtr->tcl_ParseVarName) /* 364 */
#define Tcl_GetCwd \
	(tclStubsPtr->tcl_GetCwd) /* 365 */
#define Tcl_Chdir \
	(tclStubsPtr->tcl_Chdir) /* 366 */
#define Tcl_Access \
	(tclStubsPtr->tcl_Access) /* 367 */
#define Tcl_Stat \
	(tclStubsPtr->tcl_Stat) /* 368 */
#define Tcl_UtfNcmp \
	(tclStubsPtr->tcl_UtfNcmp) /* 369 */
#define Tcl_UtfNcasecmp \
	(tclStubsPtr->tcl_UtfNcasecmp) /* 370 */
#define Tcl_StringCaseMatch \
	(tclStubsPtr->tcl_StringCaseMatch) /* 371 */
#define Tcl_UniCharIsControl \
	(tclStubsPtr->tcl_UniCharIsControl) /* 372 */
#define Tcl_UniCharIsGraph \
	(tclStubsPtr->tcl_UniCharIsGraph) /* 373 */
#define Tcl_UniCharIsPrint \
	(tclStubsPtr->tcl_UniCharIsPrint) /* 374 */
#define Tcl_UniCharIsPunct \
	(tclStubsPtr->tcl_UniCharIsPunct) /* 375 */
#define Tcl_RegExpExecObj \
	(tclStubsPtr->tcl_RegExpExecObj) /* 376 */
#define Tcl_RegExpGetInfo \
	(tclStubsPtr->tcl_RegExpGetInfo) /* 377 */
#define Tcl_NewUnicodeObj \
	(tclStubsPtr->tcl_NewUnicodeObj) /* 378 */
#define Tcl_SetUnicodeObj \
	(tclStubsPtr->tcl_SetUnicodeObj) /* 379 */
#define Tcl_GetCharLength \
	(tclStubsPtr->tcl_GetCharLength) /* 380 */
#define Tcl_GetUniChar \
	(tclStubsPtr->tcl_GetUniChar) /* 381 */
#define Tcl_GetUnicode \
	(tclStubsPtr->tcl_GetUnicode) /* 382 */
#define Tcl_GetRange \
	(tclStubsPtr->tcl_GetRange) /* 383 */
#define Tcl_AppendUnicodeToObj \
	(tclStubsPtr->tcl_AppendUnicodeToObj) /* 384 */
#define Tcl_RegExpMatchObj \
	(tclStubsPtr->tcl_RegExpMatchObj) /* 385 */
#define Tcl_SetNotifier \
	(tclStubsPtr->tcl_SetNotifier) /* 386 */
#define Tcl_GetAllocMutex \
	(tclStubsPtr->tcl_GetAllocMutex) /* 387 */
#define Tcl_GetChannelNames \
	(tclStubsPtr->tcl_GetChannelNames) /* 388 */
#define Tcl_GetChannelNamesEx \
	(tclStubsPtr->tcl_GetChannelNamesEx) /* 389 */
#define Tcl_ProcObjCmd \
	(tclStubsPtr->tcl_ProcObjCmd) /* 390 */
#define Tcl_ConditionFinalize \
	(tclStubsPtr->tcl_ConditionFinalize) /* 391 */
#define Tcl_MutexFinalize \
	(tclStubsPtr->tcl_MutexFinalize) /* 392 */
#define Tcl_CreateThread \
	(tclStubsPtr->tcl_CreateThread) /* 393 */
#define Tcl_ReadRaw \
	(tclStubsPtr->tcl_ReadRaw) /* 394 */
#define Tcl_WriteRaw \
	(tclStubsPtr->tcl_WriteRaw) /* 395 */
#define Tcl_GetTopChannel \
	(tclStubsPtr->tcl_GetTopChannel) /* 396 */
#define Tcl_ChannelBuffered \
	(tclStubsPtr->tcl_ChannelBuffered) /* 397 */
#define Tcl_ChannelName \
	(tclStubsPtr->tcl_ChannelName) /* 398 */
#define Tcl_ChannelVersion \
	(tclStubsPtr->tcl_ChannelVersion) /* 399 */
#define Tcl_ChannelBlockModeProc \
	(tclStubsPtr->tcl_ChannelBlockModeProc) /* 400 */
#define Tcl_ChannelCloseProc \
	(tclStubsPtr->tcl_ChannelCloseProc) /* 401 */
#define Tcl_ChannelClose2Proc \
	(tclStubsPtr->tcl_ChannelClose2Proc) /* 402 */
#define Tcl_ChannelInputProc \
	(tclStubsPtr->tcl_ChannelInputProc) /* 403 */
#define Tcl_ChannelOutputProc \
	(tclStubsPtr->tcl_ChannelOutputProc) /* 404 */
#define Tcl_ChannelSeekProc \
	(tclStubsPtr->tcl_ChannelSeekProc) /* 405 */
#define Tcl_ChannelSetOptionProc \
	(tclStubsPtr->tcl_ChannelSetOptionProc) /* 406 */
#define Tcl_ChannelGetOptionProc \
	(tclStubsPtr->tcl_ChannelGetOptionProc) /* 407 */
#define Tcl_ChannelWatchProc \
	(tclStubsPtr->tcl_ChannelWatchProc) /* 408 */
#define Tcl_ChannelGetHandleProc \
	(tclStubsPtr->tcl_ChannelGetHandleProc) /* 409 */
#define Tcl_ChannelFlushProc \
	(tclStubsPtr->tcl_ChannelFlushProc) /* 410 */
#define Tcl_ChannelHandlerProc \
	(tclStubsPtr->tcl_ChannelHandlerProc) /* 411 */
#define Tcl_JoinThread \
	(tclStubsPtr->tcl_JoinThread) /* 412 */
#define Tcl_IsChannelShared \
	(tclStubsPtr->tcl_IsChannelShared) /* 413 */
#define Tcl_IsChannelRegistered \
	(tclStubsPtr->tcl_IsChannelRegistered) /* 414 */
#define Tcl_CutChannel \
	(tclStubsPtr->tcl_CutChannel) /* 415 */
#define Tcl_SpliceChannel \
	(tclStubsPtr->tcl_SpliceChannel) /* 416 */
#define Tcl_ClearChannelHandlers \
	(tclStubsPtr->tcl_ClearChannelHandlers) /* 417 */
#define Tcl_IsChannelExisting \
	(tclStubsPtr->tcl_IsChannelExisting) /* 418 */
#define Tcl_UniCharNcasecmp \
	(tclStubsPtr->tcl_UniCharNcasecmp) /* 419 */
#define Tcl_UniCharCaseMatch \
	(tclStubsPtr->tcl_UniCharCaseMatch) /* 420 */
#define Tcl_FindHashEntry \
	(tclStubsPtr->tcl_FindHashEntry) /* 421 */
#define Tcl_CreateHashEntry \
	(tclStubsPtr->tcl_CreateHashEntry) /* 422 */
#define Tcl_InitCustomHashTable \
	(tclStubsPtr->tcl_InitCustomHashTable) /* 423 */
#define Tcl_InitObjHashTable \
	(tclStubsPtr->tcl_InitObjHashTable) /* 424 */
#define Tcl_CommandTraceInfo \
	(tclStubsPtr->tcl_CommandTraceInfo) /* 425 */
#define Tcl_TraceCommand \
	(tclStubsPtr->tcl_TraceCommand) /* 426 */
#define Tcl_UntraceCommand \
	(tclStubsPtr->tcl_UntraceCommand) /* 427 */
#define Tcl_AttemptAlloc \
	(tclStubsPtr->tcl_AttemptAlloc) /* 428 */
#define Tcl_AttemptDbCkalloc \
	(tclStubsPtr->tcl_AttemptDbCkalloc) /* 429 */
#define Tcl_AttemptRealloc \
	(tclStubsPtr->tcl_AttemptRealloc) /* 430 */
#define Tcl_AttemptDbCkrealloc \
	(tclStubsPtr->tcl_AttemptDbCkrealloc) /* 431 */
#define Tcl_AttemptSetObjLength \
	(tclStubsPtr->tcl_AttemptSetObjLength) /* 432 */
#define Tcl_GetChannelThread \
	(tclStubsPtr->tcl_GetChannelThread) /* 433 */
#define Tcl_GetUnicodeFromObj \
	(tclStubsPtr->tcl_GetUnicodeFromObj) /* 434 */
#define Tcl_GetMathFuncInfo \
	(tclStubsPtr->tcl_GetMathFuncInfo) /* 435 */
#define Tcl_ListMathFuncs \
	(tclStubsPtr->tcl_ListMathFuncs) /* 436 */
#define Tcl_SubstObj \
	(tclStubsPtr->tcl_SubstObj) /* 437 */
#define Tcl_DetachChannel \
	(tclStubsPtr->tcl_DetachChannel) /* 438 */
#define Tcl_IsStandardChannel \
	(tclStubsPtr->tcl_IsStandardChannel) /* 439 */
#define Tcl_FSCopyFile \
	(tclStubsPtr->tcl_FSCopyFile) /* 440 */
#define Tcl_FSCopyDirectory \
	(tclStubsPtr->tcl_FSCopyDirectory) /* 441 */
#define Tcl_FSCreateDirectory \
	(tclStubsPtr->tcl_FSCreateDirectory) /* 442 */
#define Tcl_FSDeleteFile \
	(tclStubsPtr->tcl_FSDeleteFile) /* 443 */
#define Tcl_FSLoadFile \
	(tclStubsPtr->tcl_FSLoadFile) /* 444 */
#define Tcl_FSMatchInDirectory \
	(tclStubsPtr->tcl_FSMatchInDirectory) /* 445 */
#define Tcl_FSLink \
	(tclStubsPtr->tcl_FSLink) /* 446 */
#define Tcl_FSRemoveDirectory \
	(tclStubsPtr->tcl_FSRemoveDirectory) /* 447 */
#define Tcl_FSRenameFile \
	(tclStubsPtr->tcl_FSRenameFile) /* 448 */
#define Tcl_FSLstat \
	(tclStubsPtr->tcl_FSLstat) /* 449 */
#define Tcl_FSUtime \
	(tclStubsPtr->tcl_FSUtime) /* 450 */
#define Tcl_FSFileAttrsGet \
	(tclStubsPtr->tcl_FSFileAttrsGet) /* 451 */
#define Tcl_FSFileAttrsSet \
	(tclStubsPtr->tcl_FSFileAttrsSet) /* 452 */
#define Tcl_FSFileAttrStrings \
	(tclStubsPtr->tcl_FSFileAttrStrings) /* 453 */
#define Tcl_FSStat \
	(tclStubsPtr->tcl_FSStat) /* 454 */
#define Tcl_FSAccess \
	(tclStubsPtr->tcl_FSAccess) /* 455 */
#define Tcl_FSOpenFileChannel \
	(tclStubsPtr->tcl_FSOpenFileChannel) /* 456 */
#define Tcl_FSGetCwd \
	(tclStubsPtr->tcl_FSGetCwd) /* 457 */
#define Tcl_FSChdir \
	(tclStubsPtr->tcl_FSChdir) /* 458 */
#define Tcl_FSConvertToPathType \
	(tclStubsPtr->tcl_FSConvertToPathType) /* 459 */
#define Tcl_FSJoinPath \
	(tclStubsPtr->tcl_FSJoinPath) /* 460 */
#define Tcl_FSSplitPath \
	(tclStubsPtr->tcl_FSSplitPath) /* 461 */
#define Tcl_FSEqualPaths \
	(tclStubsPtr->tcl_FSEqualPaths) /* 462 */
#define Tcl_FSGetNormalizedPath \
	(tclStubsPtr->tcl_FSGetNormalizedPath) /* 463 */
#define Tcl_FSJoinToPath \
	(tclStubsPtr->tcl_FSJoinToPath) /* 464 */
#define Tcl_FSGetInternalRep \
	(tclStubsPtr->tcl_FSGetInternalRep) /* 465 */
#define Tcl_FSGetTranslatedPath \
	(tclStubsPtr->tcl_FSGetTranslatedPath) /* 466 */
#define Tcl_FSEvalFile \
	(tclStubsPtr->tcl_FSEvalFile) /* 467 */
#define Tcl_FSNewNativePath \
	(tclStubsPtr->tcl_FSNewNativePath) /* 468 */
#define Tcl_FSGetNativePath \
	(tclStubsPtr->tcl_FSGetNativePath) /* 469 */
#define Tcl_FSFileSystemInfo \
	(tclStubsPtr->tcl_FSFileSystemInfo) /* 470 */
#define Tcl_FSPathSeparator \
	(tclStubsPtr->tcl_FSPathSeparator) /* 471 */
#define Tcl_FSListVolumes \
	(tclStubsPtr->tcl_FSListVolumes) /* 472 */
#define Tcl_FSRegister \
	(tclStubsPtr->tcl_FSRegister) /* 473 */
#define Tcl_FSUnregister \
	(tclStubsPtr->tcl_FSUnregister) /* 474 */
#define Tcl_FSData \
	(tclStubsPtr->tcl_FSData) /* 475 */
#define Tcl_FSGetTranslatedStringPath \
	(tclStubsPtr->tcl_FSGetTranslatedStringPath) /* 476 */
#define Tcl_FSGetFileSystemForPath \
	(tclStubsPtr->tcl_FSGetFileSystemForPath) /* 477 */
#define Tcl_FSGetPathType \
	(tclStubsPtr->tcl_FSGetPathType) /* 478 */
#define Tcl_OutputBuffered \
	(tclStubsPtr->tcl_OutputBuffered) /* 479 */
#define Tcl_FSMountsChanged \
	(tclStubsPtr->tcl_FSMountsChanged) /* 480 */
#define Tcl_EvalTokensStandard \
	(tclStubsPtr->tcl_EvalTokensStandard) /* 481 */
#define Tcl_GetTime \
	(tclStubsPtr->tcl_GetTime) /* 482 */
#define Tcl_CreateObjTrace \
	(tclStubsPtr->tcl_CreateObjTrace) /* 483 */
#define Tcl_GetCommandInfoFromToken \
	(tclStubsPtr->tcl_GetCommandInfoFromToken) /* 484 */
#define Tcl_SetCommandInfoFromToken \
	(tclStubsPtr->tcl_SetCommandInfoFromToken) /* 485 */
#define Tcl_DbNewWideIntObj \
	(tclStubsPtr->tcl_DbNewWideIntObj) /* 486 */
#define Tcl_GetWideIntFromObj \
	(tclStubsPtr->tcl_GetWideIntFromObj) /* 487 */
#define Tcl_NewWideIntObj \
	(tclStubsPtr->tcl_NewWideIntObj) /* 488 */
#define Tcl_SetWideIntObj \
	(tclStubsPtr->tcl_SetWideIntObj) /* 489 */
#define Tcl_AllocStatBuf \
	(tclStubsPtr->tcl_AllocStatBuf) /* 490 */
#define Tcl_Seek \
	(tclStubsPtr->tcl_Seek) /* 491 */
#define Tcl_Tell \
	(tclStubsPtr->tcl_Tell) /* 492 */
#define Tcl_ChannelWideSeekProc \
	(tclStubsPtr->tcl_ChannelWideSeekProc) /* 493 */
#define Tcl_DictObjPut \
	(tclStubsPtr->tcl_DictObjPut) /* 494 */
#define Tcl_DictObjGet \
	(tclStubsPtr->tcl_DictObjGet) /* 495 */
#define Tcl_DictObjRemove \
	(tclStubsPtr->tcl_DictObjRemove) /* 496 */
#define Tcl_DictObjSize \
	(tclStubsPtr->tcl_DictObjSize) /* 497 */
#define Tcl_DictObjFirst \
	(tclStubsPtr->tcl_DictObjFirst) /* 498 */
#define Tcl_DictObjNext \
	(tclStubsPtr->tcl_DictObjNext) /* 499 */
#define Tcl_DictObjDone \
	(tclStubsPtr->tcl_DictObjDone) /* 500 */
#define Tcl_DictObjPutKeyList \
	(tclStubsPtr->tcl_DictObjPutKeyList) /* 501 */
#define Tcl_DictObjRemoveKeyList \
	(tclStubsPtr->tcl_DictObjRemoveKeyList) /* 502 */
#define Tcl_NewDictObj \
	(tclStubsPtr->tcl_NewDictObj) /* 503 */
#define Tcl_DbNewDictObj \
	(tclStubsPtr->tcl_DbNewDictObj) /* 504 */
#define Tcl_RegisterConfig \
	(tclStubsPtr->tcl_RegisterConfig) /* 505 */
#define Tcl_CreateNamespace \
	(tclStubsPtr->tcl_CreateNamespace) /* 506 */
#define Tcl_DeleteNamespace \
	(tclStubsPtr->tcl_DeleteNamespace) /* 507 */
#define Tcl_AppendExportList \
	(tclStubsPtr->tcl_AppendExportList) /* 508 */
#define Tcl_Export \
	(tclStubsPtr->tcl_Export) /* 509 */
#define Tcl_Import \
	(tclStubsPtr->tcl_Import) /* 510 */
#define Tcl_ForgetImport \
	(tclStubsPtr->tcl_ForgetImport) /* 511 */
#define Tcl_GetCurrentNamespace \
	(tclStubsPtr->tcl_GetCurrentNamespace) /* 512 */
#define Tcl_GetGlobalNamespace \
	(tclStubsPtr->tcl_GetGlobalNamespace) /* 513 */
#define Tcl_FindNamespace \
	(tclStubsPtr->tcl_FindNamespace) /* 514 */
#define Tcl_FindCommand \
	(tclStubsPtr->tcl_FindCommand) /* 515 */
#define Tcl_GetCommandFromObj \
	(tclStubsPtr->tcl_GetCommandFromObj) /* 516 */
#define Tcl_GetCommandFullName \
	(tclStubsPtr->tcl_GetCommandFullName) /* 517 */
#define Tcl_FSEvalFileEx \
	(tclStubsPtr->tcl_FSEvalFileEx) /* 518 */
#define Tcl_SetExitProc \
	(tclStubsPtr->tcl_SetExitProc) /* 519 */
#define Tcl_LimitAddHandler \
	(tclStubsPtr->tcl_LimitAddHandler) /* 520 */
#define Tcl_LimitRemoveHandler \
	(tclStubsPtr->tcl_LimitRemoveHandler) /* 521 */
#define Tcl_LimitReady \
	(tclStubsPtr->tcl_LimitReady) /* 522 */
#define Tcl_LimitCheck \
	(tclStubsPtr->tcl_LimitCheck) /* 523 */
#define Tcl_LimitExceeded \
	(tclStubsPtr->tcl_LimitExceeded) /* 524 */
#define Tcl_LimitSetCommands \
	(tclStubsPtr->tcl_LimitSetCommands) /* 525 */
#define Tcl_LimitSetTime \
	(tclStubsPtr->tcl_LimitSetTime) /* 526 */
#define Tcl_LimitSetGranularity \
	(tclStubsPtr->tcl_LimitSetGranularity) /* 527 */
#define Tcl_LimitTypeEnabled \
	(tclStubsPtr->tcl_LimitTypeEnabled) /* 528 */
#define Tcl_LimitTypeExceeded \
	(tclStubsPtr->tcl_LimitTypeExceeded) /* 529 */
#define Tcl_LimitTypeSet \
	(tclStubsPtr->tcl_LimitTypeSet) /* 530 */
#define Tcl_LimitTypeReset \
	(tclStubsPtr->tcl_LimitTypeReset) /* 531 */
#define Tcl_LimitGetCommands \
	(tclStubsPtr->tcl_LimitGetCommands) /* 532 */
#define Tcl_LimitGetTime \
	(tclStubsPtr->tcl_LimitGetTime) /* 533 */
#define Tcl_LimitGetGranularity \
	(tclStubsPtr->tcl_LimitGetGranularity) /* 534 */
#define Tcl_SaveInterpState \
	(tclStubsPtr->tcl_SaveInterpState) /* 535 */
#define Tcl_RestoreInterpState \
	(tclStubsPtr->tcl_RestoreInterpState) /* 536 */
#define Tcl_DiscardInterpState \
	(tclStubsPtr->tcl_DiscardInterpState) /* 537 */
#define Tcl_SetReturnOptions \
	(tclStubsPtr->tcl_SetReturnOptions) /* 538 */
#define Tcl_GetReturnOptions \
	(tclStubsPtr->tcl_GetReturnOptions) /* 539 */
#define Tcl_IsEnsemble \
	(tclStubsPtr->tcl_IsEnsemble) /* 540 */
#define Tcl_CreateEnsemble \
	(tclStubsPtr->tcl_CreateEnsemble) /* 541 */
#define Tcl_FindEnsemble \
	(tclStubsPtr->tcl_FindEnsemble) /* 542 */
#define Tcl_SetEnsembleSubcommandList \
	(tclStubsPtr->tcl_SetEnsembleSubcommandList) /* 543 */
#define Tcl_SetEnsembleMappingDict \
	(tclStubsPtr->tcl_SetEnsembleMappingDict) /* 544 */
#define Tcl_SetEnsembleUnknownHandler \
	(tclStubsPtr->tcl_SetEnsembleUnknownHandler) /* 545 */
#define Tcl_SetEnsembleFlags \
	(tclStubsPtr->tcl_SetEnsembleFlags) /* 546 */
#define Tcl_GetEnsembleSubcommandList \
	(tclStubsPtr->tcl_GetEnsembleSubcommandList) /* 547 */
#define Tcl_GetEnsembleMappingDict \
	(tclStubsPtr->tcl_GetEnsembleMappingDict) /* 548 */
#define Tcl_GetEnsembleUnknownHandler \
	(tclStubsPtr->tcl_GetEnsembleUnknownHandler) /* 549 */
#define Tcl_GetEnsembleFlags \
	(tclStubsPtr->tcl_GetEnsembleFlags) /* 550 */
#define Tcl_GetEnsembleNamespace \
	(tclStubsPtr->tcl_GetEnsembleNamespace) /* 551 */
#define Tcl_SetTimeProc \
	(tclStubsPtr->tcl_SetTimeProc) /* 552 */
#define Tcl_QueryTimeProc \
	(tclStubsPtr->tcl_QueryTimeProc) /* 553 */
#define Tcl_ChannelThreadActionProc \
	(tclStubsPtr->tcl_ChannelThreadActionProc) /* 554 */
#define Tcl_NewBignumObj \
	(tclStubsPtr->tcl_NewBignumObj) /* 555 */
#define Tcl_DbNewBignumObj \
	(tclStubsPtr->tcl_DbNewBignumObj) /* 556 */
#define Tcl_SetBignumObj \
	(tclStubsPtr->tcl_SetBignumObj) /* 557 */
#define Tcl_GetBignumFromObj \
	(tclStubsPtr->tcl_GetBignumFromObj) /* 558 */
#define Tcl_TakeBignumFromObj \
	(tclStubsPtr->tcl_TakeBignumFromObj) /* 559 */
#define Tcl_TruncateChannel \
	(tclStubsPtr->tcl_TruncateChannel) /* 560 */
#define Tcl_ChannelTruncateProc \
	(tclStubsPtr->tcl_ChannelTruncateProc) /* 561 */
#define Tcl_SetChannelErrorInterp \
	(tclStubsPtr->tcl_SetChannelErrorInterp) /* 562 */
#define Tcl_GetChannelErrorInterp \
	(tclStubsPtr->tcl_GetChannelErrorInterp) /* 563 */
#define Tcl_SetChannelError \
	(tclStubsPtr->tcl_SetChannelError) /* 564 */
#define Tcl_GetChannelError \
	(tclStubsPtr->tcl_GetChannelError) /* 565 */
#define Tcl_InitBignumFromDouble \
	(tclStubsPtr->tcl_InitBignumFromDouble) /* 566 */
#define Tcl_GetNamespaceUnknownHandler \
	(tclStubsPtr->tcl_GetNamespaceUnknownHandler) /* 567 */
#define Tcl_SetNamespaceUnknownHandler \
	(tclStubsPtr->tcl_SetNamespaceUnknownHandler) /* 568 */
#define Tcl_GetEncodingFromObj \
	(tclStubsPtr->tcl_GetEncodingFromObj) /* 569 */
#define Tcl_GetEncodingSearchPath \
	(tclStubsPtr->tcl_GetEncodingSearchPath) /* 570 */
#define Tcl_SetEncodingSearchPath \
	(tclStubsPtr->tcl_SetEncodingSearchPath) /* 571 */
#define Tcl_GetEncodingNameFromEnvironment \
	(tclStubsPtr->tcl_GetEncodingNameFromEnvironment) /* 572 */
#define Tcl_PkgRequireProc \
	(tclStubsPtr->tcl_PkgRequireProc) /* 573 */
#define Tcl_AppendObjToErrorInfo \
	(tclStubsPtr->tcl_AppendObjToErrorInfo) /* 574 */
#define Tcl_AppendLimitedToObj \
	(tclStubsPtr->tcl_AppendLimitedToObj) /* 575 */
#define Tcl_Format \
	(tclStubsPtr->tcl_Format) /* 576 */
#define Tcl_AppendFormatToObj \
	(tclStubsPtr->tcl_AppendFormatToObj) /* 577 */
#define Tcl_ObjPrintf \
	(tclStubsPtr->tcl_ObjPrintf) /* 578 */
#define Tcl_AppendPrintfToObj \
	(tclStubsPtr->tcl_AppendPrintfToObj) /* 579 */
#define Tcl_CancelEval \
	(tclStubsPtr->tcl_CancelEval) /* 580 */
#define Tcl_Canceled \
	(tclStubsPtr->tcl_Canceled) /* 581 */
#define Tcl_CreatePipe \
	(tclStubsPtr->tcl_CreatePipe) /* 582 */
#define Tcl_NRCreateCommand \
	(tclStubsPtr->tcl_NRCreateCommand) /* 583 */
#define Tcl_NREvalObj \
	(tclStubsPtr->tcl_NREvalObj) /* 584 */
#define Tcl_NREvalObjv \
	(tclStubsPtr->tcl_NREvalObjv) /* 585 */
#define Tcl_NRCmdSwap \
	(tclStubsPtr->tcl_NRCmdSwap) /* 586 */
#define Tcl_NRAddCallback \
	(tclStubsPtr->tcl_NRAddCallback) /* 587 */
#define Tcl_NRCallObjProc \
	(tclStubsPtr->tcl_NRCallObjProc) /* 588 */
#define Tcl_GetFSDeviceFromStat \
	(tclStubsPtr->tcl_GetFSDeviceFromStat) /* 589 */
#define Tcl_GetFSInodeFromStat \
	(tclStubsPtr->tcl_GetFSInodeFromStat) /* 590 */
#define Tcl_GetModeFromStat \
	(tclStubsPtr->tcl_GetModeFromStat) /* 591 */
#define Tcl_GetLinkCountFromStat \
	(tclStubsPtr->tcl_GetLinkCountFromStat) /* 592 */
#define Tcl_GetUserIdFromStat \
	(tclStubsPtr->tcl_GetUserIdFromStat) /* 593 */
#define Tcl_GetGroupIdFromStat \
	(tclStubsPtr->tcl_GetGroupIdFromStat) /* 594 */
#define Tcl_GetDeviceTypeFromStat \
	(tclStubsPtr->tcl_GetDeviceTypeFromStat) /* 595 */
#define Tcl_GetAccessTimeFromStat \
	(tclStubsPtr->tcl_GetAccessTimeFromStat) /* 596 */
#define Tcl_GetModificationTimeFromStat \
	(tclStubsPtr->tcl_GetModificationTimeFromStat) /* 597 */
#define Tcl_GetChangeTimeFromStat \
	(tclStubsPtr->tcl_GetChangeTimeFromStat) /* 598 */
#define Tcl_GetSizeFromStat \
	(tclStubsPtr->tcl_GetSizeFromStat) /* 599 */
#define Tcl_GetBlocksFromStat \
	(tclStubsPtr->tcl_GetBlocksFromStat) /* 600 */
#define Tcl_GetBlockSizeFromStat \
	(tclStubsPtr->tcl_GetBlockSizeFromStat) /* 601 */
#define Tcl_SetEnsembleParameterList \
	(tclStubsPtr->tcl_SetEnsembleParameterList) /* 602 */
#define Tcl_GetEnsembleParameterList \
	(tclStubsPtr->tcl_GetEnsembleParameterList) /* 603 */
#define Tcl_ParseArgsObjv \
	(tclStubsPtr->tcl_ParseArgsObjv) /* 604 */
#define Tcl_GetErrorLine \
	(tclStubsPtr->tcl_GetErrorLine) /* 605 */
#define Tcl_SetErrorLine \
	(tclStubsPtr->tcl_SetErrorLine) /* 606 */
#define Tcl_TransferResult \
	(tclStubsPtr->tcl_TransferResult) /* 607 */
#define Tcl_InterpActive \
	(tclStubsPtr->tcl_InterpActive) /* 608 */
#define Tcl_BackgroundException \
	(tclStubsPtr->tcl_BackgroundException) /* 609 */
#define Tcl_ZlibDeflate \
	(tclStubsPtr->tcl_ZlibDeflate) /* 610 */
#define Tcl_ZlibInflate \
	(tclStubsPtr->tcl_ZlibInflate) /* 611 */
#define Tcl_ZlibCRC32 \
	(tclStubsPtr->tcl_ZlibCRC32) /* 612 */
#define Tcl_ZlibAdler32 \
	(tclStubsPtr->tcl_ZlibAdler32) /* 613 */
#define Tcl_ZlibStreamInit \
	(tclStubsPtr->tcl_ZlibStreamInit) /* 614 */
#define Tcl_ZlibStreamGetCommandName \
	(tclStubsPtr->tcl_ZlibStreamGetCommandName) /* 615 */
#define Tcl_ZlibStreamEof \
	(tclStubsPtr->tcl_ZlibStreamEof) /* 616 */
#define Tcl_ZlibStreamChecksum \
	(tclStubsPtr->tcl_ZlibStreamChecksum) /* 617 */
#define Tcl_ZlibStreamPut \
	(tclStubsPtr->tcl_ZlibStreamPut) /* 618 */
#define Tcl_ZlibStreamGet \
	(tclStubsPtr->tcl_ZlibStreamGet) /* 619 */
#define Tcl_ZlibStreamClose \
	(tclStubsPtr->tcl_ZlibStreamClose) /* 620 */
#define Tcl_ZlibStreamReset \
	(tclStubsPtr->tcl_ZlibStreamReset) /* 621 */
#define Tcl_SetStartupScript \
	(tclStubsPtr->tcl_SetStartupScript) /* 622 */
#define Tcl_GetStartupScript \
	(tclStubsPtr->tcl_GetStartupScript) /* 623 */
#define Tcl_CloseEx \
	(tclStubsPtr->tcl_CloseEx) /* 624 */
#define Tcl_NRExprObj \
	(tclStubsPtr->tcl_NRExprObj) /* 625 */
#define Tcl_NRSubstObj \
	(tclStubsPtr->tcl_NRSubstObj) /* 626 */
#define Tcl_LoadFile \
	(tclStubsPtr->tcl_LoadFile) /* 627 */
#define Tcl_FindSymbol \
	(tclStubsPtr->tcl_FindSymbol) /* 628 */
#define Tcl_FSUnloadFile \
	(tclStubsPtr->tcl_FSUnloadFile) /* 629 */
#define Tcl_ZlibStreamSetCompressionDictionary \
	(tclStubsPtr->tcl_ZlibStreamSetCompressionDictionary) /* 630 */

#endif /* defined(USE_TCL_STUBS) */

/* !END!: Do not edit above this line. */

#if defined(USE_TCL_STUBS)
#   undef Tcl_CreateInterp
#   undef Tcl_FindExecutable
#   undef Tcl_GetStringResult
#   undef Tcl_Init
#   undef Tcl_SetPanicProc
#   undef Tcl_SetVar
#   undef Tcl_StaticPackage
#   undef TclFSGetNativePath
#   define Tcl_CreateInterp() (tclStubsPtr->tcl_CreateInterp())
#   define Tcl_GetStringResult(interp) (tclStubsPtr->tcl_GetStringResult(interp))
#   define Tcl_Init(interp) (tclStubsPtr->tcl_Init(interp))
#   define Tcl_SetPanicProc(proc) (tclStubsPtr->tcl_SetPanicProc(proc))
#   define Tcl_SetVar(interp, varName, newValue, flags) \
	    (tclStubsPtr->tcl_SetVar(interp, varName, newValue, flags))
#endif

#if defined(_WIN32) && defined(UNICODE)
#   define Tcl_FindExecutable(arg) ((Tcl_FindExecutable)((const char *)(arg)))
#   define Tcl_MainEx Tcl_MainExW
    EXTERN void Tcl_MainExW(int argc, wchar_t **argv,
	    Tcl_AppInitProc *appInitProc, Tcl_Interp *interp);
#endif

#undef TCL_STORAGE_CLASS
#define TCL_STORAGE_CLASS DLLIMPORT

#endif /* _TCLDECLS */
Added compat/tcl-8.6/generic/tclPlatDecls.h.
























































































































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/*
 * tclPlatDecls.h --
 *
 *	Declarations of platform specific Tcl APIs.
 *
 * Copyright (c) 1998-1999 by Scriptics Corporation.
 * All rights reserved.
 */

#ifndef _TCLPLATDECLS
#define _TCLPLATDECLS

#undef TCL_STORAGE_CLASS
#ifdef BUILD_tcl
#   define TCL_STORAGE_CLASS DLLEXPORT
#else
#   ifdef USE_TCL_STUBS
#      define TCL_STORAGE_CLASS
#   else
#      define TCL_STORAGE_CLASS DLLIMPORT
#   endif
#endif

/*
 * WARNING: This file is automatically generated by the tools/genStubs.tcl
 * script.  Any modifications to the function declarations below should be made
 * in the generic/tcl.decls script.
 */

/*
 * TCHAR is needed here for win32, so if it is not defined yet do it here.
 * This way, we don't need to include <tchar.h> just for one define.
 */
#if (defined(_WIN32) || defined(__CYGWIN__)) && !defined(_TCHAR_DEFINED)
#   if defined(_UNICODE)
	typedef wchar_t TCHAR;
#   else
	typedef char TCHAR;
#   endif
#   define _TCHAR_DEFINED
#endif

/* !BEGIN!: Do not edit below this line. */

/*
 * Exported function declarations:
 */

#if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
/* 0 */
EXTERN TCHAR *		Tcl_WinUtfToTChar(const char *str, int len,
				Tcl_DString *dsPtr);
/* 1 */
EXTERN char *		Tcl_WinTCharToUtf(const TCHAR *str, int len,
				Tcl_DString *dsPtr);
#endif /* WIN */
#ifdef MAC_OSX_TCL /* MACOSX */
/* 0 */
EXTERN int		Tcl_MacOSXOpenBundleResources(Tcl_Interp *interp,
				const char *bundleName, int hasResourceFile,
				int maxPathLen, char *libraryPath);
/* 1 */
EXTERN int		Tcl_MacOSXOpenVersionedBundleResources(
				Tcl_Interp *interp, const char *bundleName,
				const char *bundleVersion,
				int hasResourceFile, int maxPathLen,
				char *libraryPath);
#endif /* MACOSX */

typedef struct TclPlatStubs {
    int magic;
    void *hooks;

#if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
    TCHAR * (*tcl_WinUtfToTChar) (const char *str, int len, Tcl_DString *dsPtr); /* 0 */
    char * (*tcl_WinTCharToUtf) (const TCHAR *str, int len, Tcl_DString *dsPtr); /* 1 */
#endif /* WIN */
#ifdef MAC_OSX_TCL /* MACOSX */
    int (*tcl_MacOSXOpenBundleResources) (Tcl_Interp *interp, const char *bundleName, int hasResourceFile, int maxPathLen, char *libraryPath); /* 0 */
    int (*tcl_MacOSXOpenVersionedBundleResources) (Tcl_Interp *interp, const char *bundleName, const char *bundleVersion, int hasResourceFile, int maxPathLen, char *libraryPath); /* 1 */
#endif /* MACOSX */
} TclPlatStubs;

#ifdef __cplusplus
extern "C" {
#endif
extern const TclPlatStubs *tclPlatStubsPtr;
#ifdef __cplusplus
}
#endif

#if defined(USE_TCL_STUBS)

/*
 * Inline function declarations:
 */

#if defined(__WIN32__) || defined(__CYGWIN__) /* WIN */
#define Tcl_WinUtfToTChar \
	(tclPlatStubsPtr->tcl_WinUtfToTChar) /* 0 */
#define Tcl_WinTCharToUtf \
	(tclPlatStubsPtr->tcl_WinTCharToUtf) /* 1 */
#endif /* WIN */
#ifdef MAC_OSX_TCL /* MACOSX */
#define Tcl_MacOSXOpenBundleResources \
	(tclPlatStubsPtr->tcl_MacOSXOpenBundleResources) /* 0 */
#define Tcl_MacOSXOpenVersionedBundleResources \
	(tclPlatStubsPtr->tcl_MacOSXOpenVersionedBundleResources) /* 1 */
#endif /* MACOSX */

#endif /* defined(USE_TCL_STUBS) */

/* !END!: Do not edit above this line. */

#undef TCL_STORAGE_CLASS
#define TCL_STORAGE_CLASS DLLIMPORT

#endif /* _TCLPLATDECLS */


Added compat/zlib/CMakeLists.txt.


























































































































































































































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cmake_minimum_required(VERSION 2.4.4...3.15.0)
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)

project(zlib C)

set(VERSION "1.3.1")

option(ZLIB_BUILD_EXAMPLES "Enable Zlib Examples" ON)

set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")

include(CheckTypeSize)
include(CheckFunctionExists)
include(CheckIncludeFile)
include(CheckCSourceCompiles)
enable_testing()

check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(stdint.h    HAVE_STDINT_H)
check_include_file(stddef.h    HAVE_STDDEF_H)

#
# Check to see if we have large file support
#
set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
# We add these other definitions here because CheckTypeSize.cmake
# in CMake 2.4.x does not automatically do so and we want
# compatibility with CMake 2.4.x.
if(HAVE_SYS_TYPES_H)
    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
endif()
if(HAVE_STDINT_H)
    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
endif()
if(HAVE_STDDEF_H)
    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
endif()
check_type_size(off64_t OFF64_T)
if(HAVE_OFF64_T)
   add_definitions(-D_LARGEFILE64_SOURCE=1)
endif()
set(CMAKE_REQUIRED_DEFINITIONS) # clear variable

#
# Check for fseeko
#
check_function_exists(fseeko HAVE_FSEEKO)
if(NOT HAVE_FSEEKO)
    add_definitions(-DNO_FSEEKO)
endif()

#
# Check for unistd.h
#
check_include_file(unistd.h Z_HAVE_UNISTD_H)

if(MSVC)
    set(CMAKE_DEBUG_POSTFIX "d")
    add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
    add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
    include_directories(${CMAKE_CURRENT_SOURCE_DIR})
endif()

if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
    # If we're doing an out of source build and the user has a zconf.h
    # in their source tree...
    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
        message(STATUS "Renaming")
        message(STATUS "    ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h")
        message(STATUS "to 'zconf.h.included' because this file is included with zlib")
        message(STATUS "but CMake generates it automatically in the build directory.")
        file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included)
  endif()
endif()

set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
		${ZLIB_PC} @ONLY)
configure_file(	${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
		${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})


#============================================================================
# zlib
#============================================================================

set(ZLIB_PUBLIC_HDRS
    ${CMAKE_CURRENT_BINARY_DIR}/zconf.h
    zlib.h
)
set(ZLIB_PRIVATE_HDRS
    crc32.h
    deflate.h
    gzguts.h
    inffast.h
    inffixed.h
    inflate.h
    inftrees.h
    trees.h
    zutil.h
)
set(ZLIB_SRCS
    adler32.c
    compress.c
    crc32.c
    deflate.c
    gzclose.c
    gzlib.c
    gzread.c
    gzwrite.c
    inflate.c
    infback.c
    inftrees.c
    inffast.c
    trees.c
    uncompr.c
    zutil.c
)

if(NOT MINGW)
    set(ZLIB_DLL_SRCS
        win32/zlib1.rc # If present will override custom build rule below.
    )
endif()

# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
    "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})

if(MINGW)
    # This gets us DLL resource information when compiling on MinGW.
    if(NOT CMAKE_RC_COMPILER)
        set(CMAKE_RC_COMPILER windres.exe)
    endif()

    add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
                       COMMAND ${CMAKE_RC_COMPILER}
                            -D GCC_WINDRES
                            -I ${CMAKE_CURRENT_SOURCE_DIR}
                            -I ${CMAKE_CURRENT_BINARY_DIR}
                            -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
                            -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
    set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
endif(MINGW)

add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
target_include_directories(zlib PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
target_include_directories(zlibstatic PUBLIC ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
set_target_properties(zlib PROPERTIES SOVERSION 1)

if(NOT CYGWIN)
    # This property causes shared libraries on Linux to have the full version
    # encoded into their final filename.  We disable this on Cygwin because
    # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
    # seems to be the default.
    #
    # This has no effect with MSVC, on that platform the version info for
    # the DLL comes from the resource file win32/zlib1.rc
    set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
endif()

if(UNIX)
    # On unix-like platforms the library is almost always called libz
   set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
   if(NOT APPLE AND NOT(CMAKE_SYSTEM_NAME STREQUAL AIX))
     set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
   endif()
elseif(BUILD_SHARED_LIBS AND WIN32)
    # Creates zlib1.dll when building shared library version
    set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
endif()

if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
    install(TARGETS zlib zlibstatic
        RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
        ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
        LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
    install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
    install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
    install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
endif()

#============================================================================
# Example binaries
#============================================================================
if(ZLIB_BUILD_EXAMPLES)
    add_executable(example test/example.c)
    target_link_libraries(example zlib)
    add_test(example example)

    add_executable(minigzip test/minigzip.c)
    target_link_libraries(minigzip zlib)

    if(HAVE_OFF64_T)
        add_executable(example64 test/example.c)
        target_link_libraries(example64 zlib)
        set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
        add_test(example64 example64)

        add_executable(minigzip64 test/minigzip.c)
        target_link_libraries(minigzip64 zlib)
        set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
    endif()
endif()
Added compat/zlib/ChangeLog.


















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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                ChangeLog file for zlib

Changes in 1.3.1 (22 Jan 2024)
- Reject overflows of zip header fields in minizip
- Fix bug in inflateSync() for data held in bit buffer
- Add LIT_MEM define to use more memory for a small deflate speedup
- Fix decision on the emission of Zip64 end records in minizip
- Add bounds checking to ERR_MSG() macro, used by zError()
- Neutralize zip file traversal attacks in miniunz
- Fix a bug in ZLIB_DEBUG compiles in check_match()
- Various portability and appearance improvements

Changes in 1.3 (18 Aug 2023)
- Remove K&R function definitions and zlib2ansi
- Fix bug in deflateBound() for level 0 and memLevel 9
- Fix bug when gzungetc() is used immediately after gzopen()
- Fix bug when using gzflush() with a very small buffer
- Fix crash when gzsetparams() attempted for transparent write
- Fix test/example.c to work with FORCE_STORED
- Rewrite of zran in examples (see zran.c version history)
- Fix minizip to allow it to open an empty zip file
- Fix reading disk number start on zip64 files in minizip
- Fix logic error in minizip argument processing
- Add minizip testing to Makefile
- Read multiple bytes instead of byte-by-byte in minizip unzip.c
- Add memory sanitizer to configure (--memory)
- Various portability improvements
- Various documentation improvements
- Various spelling and typo corrections

Changes in 1.2.13 (13 Oct 2022)
- Fix configure issue that discarded provided CC definition
- Correct incorrect inputs provided to the CRC functions
- Repair prototypes and exporting of new CRC functions
- Fix inflateBack to detect invalid input with distances too far
- Have infback() deliver all of the available output up to any error
- Fix a bug when getting a gzip header extra field with inflate()
- Fix bug in block type selection when Z_FIXED used
- Tighten deflateBound bounds
- Remove deleted assembler code references
- Various portability and appearance improvements

Changes in 1.2.12 (27 Mar 2022)
- Cygwin does not have _wopen(), so do not create gzopen_w() there
- Permit a deflateParams() parameter change as soon as possible
- Limit hash table inserts after switch from stored deflate
- Fix bug when window full in deflate_stored()
- Fix CLEAR_HASH macro to be usable as a single statement
- Avoid a conversion error in gzseek when off_t type too small
- Have Makefile return non-zero error code on test failure
- Avoid some conversion warnings in gzread.c and gzwrite.c
- Update use of errno for newer Windows CE versions
- Small speedup to inflate [psumbera]
- Return an error if the gzputs string length can't fit in an int
- Add address checking in clang to -w option of configure
- Don't compute check value for raw inflate if asked to validate
- Handle case where inflateSync used when header never processed
- Avoid the use of ptrdiff_t
- Avoid an undefined behavior of memcpy() in gzappend()
- Avoid undefined behaviors of memcpy() in gz*printf()
- Avoid an undefined behavior of memcpy() in _tr_stored_block()
- Make the names in functions declarations identical to definitions
- Remove old assembler code in which bugs have manifested
- Fix deflateEnd() to not report an error at start of raw deflate
- Add legal disclaimer to README
- Emphasize the need to continue decompressing gzip members
- Correct the initialization requirements for deflateInit2()
- Fix a bug that can crash deflate on some input when using Z_FIXED
- Assure that the number of bits for deflatePrime() is valid
- Use a structure to make globals in enough.c evident
- Use a macro for the printf format of big_t in enough.c
- Clean up code style in enough.c, update version
- Use inline function instead of macro for index in enough.c
- Clarify that prefix codes are counted in enough.c
- Show all the codes for the maximum tables size in enough.c
- Add gznorm.c example, which normalizes gzip files
- Fix the zran.c example to work on a multiple-member gzip file
- Add tables for crc32_combine(), to speed it up by a factor of 200
- Add crc32_combine_gen() and crc32_combine_op() for fast combines
- Speed up software CRC-32 computation by a factor of 1.5 to 3
- Use atomic test and set, if available, for dynamic CRC tables
- Don't bother computing check value after successful inflateSync()
- Correct comment in crc32.c
- Add use of the ARMv8 crc32 instructions when requested
- Use ARM crc32 instructions if the ARM architecture has them
- Explicitly note that the 32-bit check values are 32 bits
- Avoid adding empty gzip member after gzflush with Z_FINISH
- Fix memory leak on error in gzlog.c
- Fix error in comment on the polynomial representation of a byte
- Clarify gz* function interfaces, referring to parameter names
- Change macro name in inflate.c to avoid collision in VxWorks
- Correct typo in blast.c
- Improve portability of contrib/minizip
- Fix indentation in minizip's zip.c
- Replace black/white with allow/block. (theresa-m)
- minizip warning fix if MAXU32 already defined. (gvollant)
- Fix unztell64() in minizip to work past 4GB. (Daniël Hörchner)
- Clean up minizip to reduce warnings for testing
- Add fallthrough comments for gcc
- Eliminate use of ULL constants
- Separate out address sanitizing from warnings in configure
- Remove destructive aspects of make distclean
- Check for cc masquerading as gcc or clang in configure
- Fix crc32.c to compile local functions only if used

Changes in 1.2.11 (15 Jan 2017)
- Fix deflate stored bug when pulling last block from window
- Permit immediate deflateParams changes before any deflate input

Changes in 1.2.10 (2 Jan 2017)
- Avoid warnings on snprintf() return value
- Fix bug in deflate_stored() for zero-length input
- Fix bug in gzwrite.c that produced corrupt gzip files
- Remove files to be installed before copying them in Makefile.in
- Add warnings when compiling with assembler code

Changes in 1.2.9 (31 Dec 2016)
- Fix contrib/minizip to permit unzipping with desktop API [Zouzou]
- Improve contrib/blast to return unused bytes
- Assure that gzoffset() is correct when appending
- Improve compress() and uncompress() to support large lengths
- Fix bug in test/example.c where error code not saved
- Remedy Coverity warning [Randers-Pehrson]
- Improve speed of gzprintf() in transparent mode
- Fix inflateInit2() bug when windowBits is 16 or 32
- Change DEBUG macro to ZLIB_DEBUG
- Avoid uninitialized access by gzclose_w()
- Allow building zlib outside of the source directory
- Fix bug that accepted invalid zlib header when windowBits is zero
- Fix gzseek() problem on MinGW due to buggy _lseeki64 there
- Loop on write() calls in gzwrite.c in case of non-blocking I/O
- Add --warn (-w) option to ./configure for more compiler warnings
- Reject a window size of 256 bytes if not using the zlib wrapper
- Fix bug when level 0 used with Z_HUFFMAN or Z_RLE
- Add --debug (-d) option to ./configure to define ZLIB_DEBUG
- Fix bugs in creating a very large gzip header
- Add uncompress2() function, which returns the input size used
- Assure that deflateParams() will not switch functions mid-block
- Dramatically speed up deflation for level 0 (storing)
- Add gzfread(), duplicating the interface of fread()
- Add gzfwrite(), duplicating the interface of fwrite()
- Add deflateGetDictionary() function
- Use snprintf() for later versions of Microsoft C
- Fix *Init macros to use z_ prefix when requested
- Replace as400 with os400 for OS/400 support [Monnerat]
- Add crc32_z() and adler32_z() functions with size_t lengths
- Update Visual Studio project files [AraHaan]

Changes in 1.2.8 (28 Apr 2013)
- Update contrib/minizip/iowin32.c for Windows RT [Vollant]
- Do not force Z_CONST for C++
- Clean up contrib/vstudio [Roß]
- Correct spelling error in zlib.h
- Fix mixed line endings in contrib/vstudio

Changes in 1.2.7.3 (13 Apr 2013)
- Fix version numbers and DLL names in contrib/vstudio/*/zlib.rc

Changes in 1.2.7.2 (13 Apr 2013)
- Change check for a four-byte type back to hexadecimal
- Fix typo in win32/Makefile.msc
- Add casts in gzwrite.c for pointer differences

Changes in 1.2.7.1 (24 Mar 2013)
- Replace use of unsafe string functions with snprintf if available
- Avoid including stddef.h on Windows for Z_SOLO compile [Niessink]
- Fix gzgetc undefine when Z_PREFIX set [Turk]
- Eliminate use of mktemp in Makefile (not always available)
- Fix bug in 'F' mode for gzopen()
- Add inflateGetDictionary() function
- Correct comment in deflate.h
- Use _snprintf for snprintf in Microsoft C
- On Darwin, only use /usr/bin/libtool if libtool is not Apple
- Delete "--version" file if created by "ar --version" [Richard G.]
- Fix configure check for veracity of compiler error return codes
- Fix CMake compilation of static lib for MSVC2010 x64
- Remove unused variable in infback9.c
- Fix argument checks in gzlog_compress() and gzlog_write()
- Clean up the usage of z_const and respect const usage within zlib
- Clean up examples/gzlog.[ch] comparisons of different types
- Avoid shift equal to bits in type (caused endless loop)
- Fix uninitialized value bug in gzputc() introduced by const patches
- Fix memory allocation error in examples/zran.c [Nor]
- Fix bug where gzopen(), gzclose() would write an empty file
- Fix bug in gzclose() when gzwrite() runs out of memory
- Check for input buffer malloc failure in examples/gzappend.c
- Add note to contrib/blast to use binary mode in stdio
- Fix comparisons of differently signed integers in contrib/blast
- Check for invalid code length codes in contrib/puff
- Fix serious but very rare decompression bug in inftrees.c
- Update inflateBack() comments, since inflate() can be faster
- Use underscored I/O function names for WINAPI_FAMILY
- Add _tr_flush_bits to the external symbols prefixed by --zprefix
- Add contrib/vstudio/vc10 pre-build step for static only
- Quote --version-script argument in CMakeLists.txt
- Don't specify --version-script on Apple platforms in CMakeLists.txt
- Fix casting error in contrib/testzlib/testzlib.c
- Fix types in contrib/minizip to match result of get_crc_table()
- Simplify contrib/vstudio/vc10 with 'd' suffix
- Add TOP support to win32/Makefile.msc
- Support i686 and amd64 assembler builds in CMakeLists.txt
- Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h
- Add vc11 and vc12 build files to contrib/vstudio
- Add gzvprintf() as an undocumented function in zlib
- Fix configure for Sun shell
- Remove runtime check in configure for four-byte integer type
- Add casts and consts to ease user conversion to C++
- Add man pages for minizip and miniunzip
- In Makefile uninstall, don't rm if preceding cd fails
- Do not return Z_BUF_ERROR if deflateParam() has nothing to write

Changes in 1.2.7 (2 May 2012)
- Replace use of memmove() with a simple copy for portability
- Test for existence of strerror
- Restore gzgetc_ for backward compatibility with 1.2.6
- Fix build with non-GNU make on Solaris
- Require gcc 4.0 or later on Mac OS X to use the hidden attribute
- Include unistd.h for Watcom C
- Use __WATCOMC__ instead of __WATCOM__
- Do not use the visibility attribute if NO_VIZ defined
- Improve the detection of no hidden visibility attribute
- Avoid using __int64 for gcc or solo compilation
- Cast to char * in gzprintf to avoid warnings [Zinser]
- Fix make_vms.com for VAX [Zinser]
- Don't use library or built-in byte swaps
- Simplify test and use of gcc hidden attribute
- Fix bug in gzclose_w() when gzwrite() fails to allocate memory
- Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen()
- Fix bug in test/minigzip.c for configure --solo
- Fix contrib/vstudio project link errors [Mohanathas]
- Add ability to choose the builder in make_vms.com [Schweda]
- Add DESTDIR support to mingw32 win32/Makefile.gcc
- Fix comments in win32/Makefile.gcc for proper usage
- Allow overriding the default install locations for cmake
- Generate and install the pkg-config file with cmake
- Build both a static and a shared version of zlib with cmake
- Include version symbols for cmake builds
- If using cmake with MSVC, add the source directory to the includes
- Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc [Truta]
- Move obsolete emx makefile to old [Truta]
- Allow the use of -Wundef when compiling or using zlib
- Avoid the use of the -u option with mktemp
- Improve inflate() documentation on the use of Z_FINISH
- Recognize clang as gcc
- Add gzopen_w() in Windows for wide character path names
- Rename zconf.h in CMakeLists.txt to move it out of the way
- Add source directory in CMakeLists.txt for building examples
- Look in build directory for zlib.pc in CMakeLists.txt
- Remove gzflags from zlibvc.def in vc9 and vc10
- Fix contrib/minizip compilation in the MinGW environment
- Update ./configure for Solaris, support --64 [Mooney]
- Remove -R. from Solaris shared build (possible security issue)
- Avoid race condition for parallel make (-j) running example
- Fix type mismatch between get_crc_table() and crc_table
- Fix parsing of version with "-" in CMakeLists.txt [Snider, Ziegler]
- Fix the path to zlib.map in CMakeLists.txt
- Force the native libtool in Mac OS X to avoid GNU libtool [Beebe]
- Add instructions to win32/Makefile.gcc for shared install [Torri]

Changes in 1.2.6.1 (12 Feb 2012)
- Avoid the use of the Objective-C reserved name "id"
- Include io.h in gzguts.h for Microsoft compilers
- Fix problem with ./configure --prefix and gzgetc macro
- Include gz_header definition when compiling zlib solo
- Put gzflags() functionality back in zutil.c
- Avoid library header include in crc32.c for Z_SOLO
- Use name in GCC_CLASSIC as C compiler for coverage testing, if set
- Minor cleanup in contrib/minizip/zip.c [Vollant]
- Update make_vms.com [Zinser]
- Remove unnecessary gzgetc_ function
- Use optimized byte swap operations for Microsoft and GNU [Snyder]
- Fix minor typo in zlib.h comments [Rzesniowiecki]

Changes in 1.2.6 (29 Jan 2012)
- Update the Pascal interface in contrib/pascal
- Fix function numbers for gzgetc_ in zlibvc.def files
- Fix configure.ac for contrib/minizip [Schiffer]
- Fix large-entry detection in minizip on 64-bit systems [Schiffer]
- Have ./configure use the compiler return code for error indication
- Fix CMakeLists.txt for cross compilation [McClure]
- Fix contrib/minizip/zip.c for 64-bit architectures [Dalsnes]
- Fix compilation of contrib/minizip on FreeBSD [Marquez]
- Correct suggested usages in win32/Makefile.msc [Shachar, Horvath]
- Include io.h for Turbo C / Borland C on all platforms [Truta]
- Make version explicit in contrib/minizip/configure.ac [Bosmans]
- Avoid warning for no encryption in contrib/minizip/zip.c [Vollant]
- Minor cleanup up contrib/minizip/unzip.c [Vollant]
- Fix bug when compiling minizip with C++ [Vollant]
- Protect for long name and extra fields in contrib/minizip [Vollant]
- Avoid some warnings in contrib/minizip [Vollant]
- Add -I../.. -L../.. to CFLAGS for minizip and miniunzip
- Add missing libs to minizip linker command
- Add support for VPATH builds in contrib/minizip
- Add an --enable-demos option to contrib/minizip/configure
- Add the generation of configure.log by ./configure
- Exit when required parameters not provided to win32/Makefile.gcc
- Have gzputc return the character written instead of the argument
- Use the -m option on ldconfig for BSD systems [Tobias]
- Correct in zlib.map when deflateResetKeep was added

Changes in 1.2.5.3 (15 Jan 2012)
- Restore gzgetc function for binary compatibility
- Do not use _lseeki64 under Borland C++ [Truta]
- Update win32/Makefile.msc to build test/*.c [Truta]
- Remove old/visualc6 given CMakefile and other alternatives
- Update AS400 build files and documentation [Monnerat]
- Update win32/Makefile.gcc to build test/*.c [Truta]
- Permit stronger flushes after Z_BLOCK flushes
- Avoid extraneous empty blocks when doing empty flushes
- Permit Z_NULL arguments to deflatePending
- Allow deflatePrime() to insert bits in the middle of a stream
- Remove second empty static block for Z_PARTIAL_FLUSH
- Write out all of the available bits when using Z_BLOCK
- Insert the first two strings in the hash table after a flush

Changes in 1.2.5.2 (17 Dec 2011)
- fix ld error: unable to find version dependency 'ZLIB_1.2.5'
- use relative symlinks for shared libs
- Avoid searching past window for Z_RLE strategy
- Assure that high-water mark initialization is always applied in deflate
- Add assertions to fill_window() in deflate.c to match comments
- Update python link in README
- Correct spelling error in gzread.c
- Fix bug in gzgets() for a concatenated empty gzip stream
- Correct error in comment for gz_make()
- Change gzread() and related to ignore junk after gzip streams
- Allow gzread() and related to continue after gzclearerr()
- Allow gzrewind() and gzseek() after a premature end-of-file
- Simplify gzseek() now that raw after gzip is ignored
- Change gzgetc() to a macro for speed (~40% speedup in testing)
- Fix gzclose() to return the actual error last encountered
- Always add large file support for windows
- Include zconf.h for windows large file support
- Include zconf.h.cmakein for windows large file support
- Update zconf.h.cmakein on make distclean
- Merge vestigial vsnprintf determination from zutil.h to gzguts.h
- Clarify how gzopen() appends in zlib.h comments
- Correct documentation of gzdirect() since junk at end now ignored
- Add a transparent write mode to gzopen() when 'T' is in the mode
- Update python link in zlib man page
- Get inffixed.h and MAKEFIXED result to match
- Add a ./config --solo option to make zlib subset with no library use
- Add undocumented inflateResetKeep() function for CAB file decoding
- Add --cover option to ./configure for gcc coverage testing
- Add #define ZLIB_CONST option to use const in the z_stream interface
- Add comment to gzdopen() in zlib.h to use dup() when using fileno()
- Note behavior of uncompress() to provide as much data as it can
- Add files in contrib/minizip to aid in building libminizip
- Split off AR options in Makefile.in and configure
- Change ON macro to Z_ARG to avoid application conflicts
- Facilitate compilation with Borland C++ for pragmas and vsnprintf
- Include io.h for Turbo C / Borland C++
- Move example.c and minigzip.c to test/
- Simplify incomplete code table filling in inflate_table()
- Remove code from inflate.c and infback.c that is impossible to execute
- Test the inflate code with full coverage
- Allow deflateSetDictionary, inflateSetDictionary at any time (in raw)
- Add deflateResetKeep and fix inflateResetKeep to retain dictionary
- Fix gzwrite.c to accommodate reduced memory zlib compilation
- Have inflate() with Z_FINISH avoid the allocation of a window
- Do not set strm->adler when doing raw inflate
- Fix gzeof() to behave just like feof() when read is not past end of file
- Fix bug in gzread.c when end-of-file is reached
- Avoid use of Z_BUF_ERROR in gz* functions except for premature EOF
- Document gzread() capability to read concurrently written files
- Remove hard-coding of resource compiler in CMakeLists.txt [Blammo]

Changes in 1.2.5.1 (10 Sep 2011)
- Update FAQ entry on shared builds (#13)
- Avoid symbolic argument to chmod in Makefile.in
- Fix bug and add consts in contrib/puff [Oberhumer]
- Update contrib/puff/zeros.raw test file to have all block types
- Add full coverage test for puff in contrib/puff/Makefile
- Fix static-only-build install in Makefile.in
- Fix bug in unzGetCurrentFileInfo() in contrib/minizip [Kuno]
- Add libz.a dependency to shared in Makefile.in for parallel builds
- Spell out "number" (instead of "nb") in zlib.h for total_in, total_out
- Replace $(...) with `...` in configure for non-bash sh [Bowler]
- Add darwin* to Darwin* and solaris* to SunOS\ 5* in configure [Groffen]
- Add solaris* to Linux* in configure to allow gcc use [Groffen]
- Add *bsd* to Linux* case in configure [Bar-Lev]
- Add inffast.obj to dependencies in win32/Makefile.msc
- Correct spelling error in deflate.h [Kohler]
- Change libzdll.a again to libz.dll.a (!) in win32/Makefile.gcc
- Add test to configure for GNU C looking for gcc in output of $cc -v
- Add zlib.pc generation to win32/Makefile.gcc [Weigelt]
- Fix bug in zlib.h for _FILE_OFFSET_BITS set and _LARGEFILE64_SOURCE not
- Add comment in zlib.h that adler32_combine with len2 < 0 makes no sense
- Make NO_DIVIDE option in adler32.c much faster (thanks to John Reiser)
- Make stronger test in zconf.h to include unistd.h for LFS
- Apply Darwin patches for 64-bit file offsets to contrib/minizip [Slack]
- Fix zlib.h LFS support when Z_PREFIX used
- Add updated as400 support (removed from old) [Monnerat]
- Avoid deflate sensitivity to volatile input data
- Avoid division in adler32_combine for NO_DIVIDE
- Clarify the use of Z_FINISH with deflateBound() amount of space
- Set binary for output file in puff.c
- Use u4 type for crc_table to avoid conversion warnings
- Apply casts in zlib.h to avoid conversion warnings
- Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller]
- Improve inflateSync() documentation to note indeterminacy
- Add deflatePending() function to return the amount of pending output
- Correct the spelling of "specification" in FAQ [Randers-Pehrson]
- Add a check in configure for stdarg.h, use for gzprintf()
- Check that pointers fit in ints when gzprint() compiled old style
- Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler]
- Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt]
- Add debug records in assembler code [Londer]
- Update RFC references to use http://tools.ietf.org/html/... [Li]
- Add --archs option, use of libtool to configure for Mac OS X [Borstel]

Changes in 1.2.5 (19 Apr 2010)
- Disable visibility attribute in win32/Makefile.gcc [Bar-Lev]
- Default to libdir as sharedlibdir in configure [Nieder]
- Update copyright dates on modified source files
- Update trees.c to be able to generate modified trees.h
- Exit configure for MinGW, suggesting win32/Makefile.gcc
- Check for NULL path in gz_open [Homurlu]

Changes in 1.2.4.5 (18 Apr 2010)
- Set sharedlibdir in configure [Torok]
- Set LDFLAGS in Makefile.in [Bar-Lev]
- Avoid mkdir objs race condition in Makefile.in [Bowler]
- Add ZLIB_INTERNAL in front of internal inter-module functions and arrays
- Define ZLIB_INTERNAL to hide internal functions and arrays for GNU C
- Don't use hidden attribute when it is a warning generator (e.g. Solaris)

Changes in 1.2.4.4 (18 Apr 2010)
- Fix CROSS_PREFIX executable testing, CHOST extract, mingw* [Torok]
- Undefine _LARGEFILE64_SOURCE in zconf.h if it is zero, but not if empty
- Try to use bash or ksh regardless of functionality of /bin/sh
- Fix configure incompatibility with NetBSD sh
- Remove attempt to run under bash or ksh since have better NetBSD fix
- Fix win32/Makefile.gcc for MinGW [Bar-Lev]
- Add diagnostic messages when using CROSS_PREFIX in configure
- Added --sharedlibdir option to configure [Weigelt]
- Use hidden visibility attribute when available [Frysinger]

Changes in 1.2.4.3 (10 Apr 2010)
- Only use CROSS_PREFIX in configure for ar and ranlib if they exist
- Use CROSS_PREFIX for nm [Bar-Lev]
- Assume _LARGEFILE64_SOURCE defined is equivalent to true
- Avoid use of undefined symbols in #if with && and ||
- Make *64 prototypes in gzguts.h consistent with functions
- Add -shared load option for MinGW in configure [Bowler]
- Move z_off64_t to public interface, use instead of off64_t
- Remove ! from shell test in configure (not portable to Solaris)
- Change +0 macro tests to -0 for possibly increased portability

Changes in 1.2.4.2 (9 Apr 2010)
- Add consistent carriage returns to readme.txt's in masmx86 and masmx64
- Really provide prototypes for *64 functions when building without LFS
- Only define unlink() in minigzip.c if unistd.h not included
- Update README to point to contrib/vstudio project files
- Move projects/vc6 to old/ and remove projects/
- Include stdlib.h in minigzip.c for setmode() definition under WinCE
- Clean up assembler builds in win32/Makefile.msc [Rowe]
- Include sys/types.h for Microsoft for off_t definition
- Fix memory leak on error in gz_open()
- Symbolize nm as $NM in configure [Weigelt]
- Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt]
- Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined
- Fix bug in gzeof() to take into account unused input data
- Avoid initialization of structures with variables in puff.c
- Updated win32/README-WIN32.txt [Rowe]

Changes in 1.2.4.1 (28 Mar 2010)
- Remove the use of [a-z] constructs for sed in configure [gentoo 310225]
- Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech]
- Restore "for debugging" comment on sprintf() in gzlib.c
- Remove fdopen for MVS from gzguts.h
- Put new README-WIN32.txt in win32 [Rowe]
- Add check for shell to configure and invoke another shell if needed
- Fix big fat stinking bug in gzseek() on uncompressed files
- Remove vestigial F_OPEN64 define in zutil.h
- Set and check the value of _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE
- Avoid errors on non-LFS systems when applications define LFS macros
- Set EXE to ".exe" in configure for MINGW [Kahle]
- Match crc32() in crc32.c exactly to the prototype in zlib.h [Sherrill]
- Add prefix for cross-compilation in win32/makefile.gcc [Bar-Lev]
- Add DLL install in win32/makefile.gcc [Bar-Lev]
- Allow Linux* or linux* from uname in configure [Bar-Lev]
- Allow ldconfig to be redefined in configure and Makefile.in [Bar-Lev]
- Add cross-compilation prefixes to configure [Bar-Lev]
- Match type exactly in gz_load() invocation in gzread.c
- Match type exactly of zcalloc() in zutil.c to zlib.h alloc_func
- Provide prototypes for *64 functions when building zlib without LFS
- Don't use -lc when linking shared library on MinGW
- Remove errno.h check in configure and vestigial errno code in zutil.h

Changes in 1.2.4 (14 Mar 2010)
- Fix VER3 extraction in configure for no fourth subversion
- Update zlib.3, add docs to Makefile.in to make .pdf out of it
- Add zlib.3.pdf to distribution
- Don't set error code in gzerror() if passed pointer is NULL
- Apply destination directory fixes to CMakeLists.txt [Lowman]
- Move #cmakedefine's to a new zconf.in.cmakein
- Restore zconf.h for builds that don't use configure or cmake
- Add distclean to dummy Makefile for convenience
- Update and improve INDEX, README, and FAQ
- Update CMakeLists.txt for the return of zconf.h [Lowman]
- Update contrib/vstudio/vc9 and vc10 [Vollant]
- Change libz.dll.a back to libzdll.a in win32/Makefile.gcc
- Apply license and readme changes to contrib/asm686 [Raiter]
- Check file name lengths and add -c option in minigzip.c [Li]
- Update contrib/amd64 and contrib/masmx86/ [Vollant]
- Avoid use of "eof" parameter in trees.c to not shadow library variable
- Update make_vms.com for removal of zlibdefs.h [Zinser]
- Update assembler code and vstudio projects in contrib [Vollant]
- Remove outdated assembler code contrib/masm686 and contrib/asm586
- Remove old vc7 and vc8 from contrib/vstudio
- Update win32/Makefile.msc, add ZLIB_VER_SUBREVISION [Rowe]
- Fix memory leaks in gzclose_r() and gzclose_w(), file leak in gz_open()
- Add contrib/gcc_gvmat64 for longest_match and inflate_fast [Vollant]
- Remove *64 functions from win32/zlib.def (they're not 64-bit yet)
- Fix bug in void-returning vsprintf() case in gzwrite.c
- Fix name change from inflate.h in contrib/inflate86/inffas86.c
- Check if temporary file exists before removing in make_vms.com [Zinser]
- Fix make install and uninstall for --static option
- Fix usage of _MSC_VER in gzguts.h and zutil.h [Truta]
- Update readme.txt in contrib/masmx64 and masmx86 to assemble

Changes in 1.2.3.9 (21 Feb 2010)
- Expunge gzio.c
- Move as400 build information to old
- Fix updates in contrib/minizip and contrib/vstudio
- Add const to vsnprintf test in configure to avoid warnings [Weigelt]
- Delete zconf.h (made by configure) [Weigelt]
- Change zconf.in.h to zconf.h.in per convention [Weigelt]
- Check for NULL buf in gzgets()
- Return empty string for gzgets() with len == 1 (like fgets())
- Fix description of gzgets() in zlib.h for end-of-file, NULL return
- Update minizip to 1.1 [Vollant]
- Avoid MSVC loss of data warnings in gzread.c, gzwrite.c
- Note in zlib.h that gzerror() should be used to distinguish from EOF
- Remove use of snprintf() from gzlib.c
- Fix bug in gzseek()
- Update contrib/vstudio, adding vc9 and vc10 [Kuno, Vollant]
- Fix zconf.h generation in CMakeLists.txt [Lowman]
- Improve comments in zconf.h where modified by configure

Changes in 1.2.3.8 (13 Feb 2010)
- Clean up text files (tabs, trailing whitespace, etc.) [Oberhumer]
- Use z_off64_t in gz_zero() and gz_skip() to match state->skip
- Avoid comparison problem when sizeof(int) == sizeof(z_off64_t)
- Revert to Makefile.in from 1.2.3.6 (live with the clutter)
- Fix missing error return in gzflush(), add zlib.h note
- Add *64 functions to zlib.map [Levin]
- Fix signed/unsigned comparison in gz_comp()
- Use SFLAGS when testing shared linking in configure
- Add --64 option to ./configure to use -m64 with gcc
- Fix ./configure --help to correctly name options
- Have make fail if a test fails [Levin]
- Avoid buffer overrun in contrib/masmx64/gvmat64.asm [Simpson]
- Remove assembler object files from contrib

Changes in 1.2.3.7 (24 Jan 2010)
- Always gzopen() with O_LARGEFILE if available
- Fix gzdirect() to work immediately after gzopen() or gzdopen()
- Make gzdirect() more precise when the state changes while reading
- Improve zlib.h documentation in many places
- Catch memory allocation failure in gz_open()
- Complete close operation if seek forward in gzclose_w() fails
- Return Z_ERRNO from gzclose_r() if close() fails
- Return Z_STREAM_ERROR instead of EOF for gzclose() being passed NULL
- Return zero for gzwrite() errors to match zlib.h description
- Return -1 on gzputs() error to match zlib.h description
- Add zconf.in.h to allow recovery from configure modification [Weigelt]
- Fix static library permissions in Makefile.in [Weigelt]
- Avoid warnings in configure tests that hide functionality [Weigelt]
- Add *BSD and DragonFly to Linux case in configure [gentoo 123571]
- Change libzdll.a to libz.dll.a in win32/Makefile.gcc [gentoo 288212]
- Avoid access of uninitialized data for first inflateReset2 call [Gomes]
- Keep object files in subdirectories to reduce the clutter somewhat
- Remove default Makefile and zlibdefs.h, add dummy Makefile
- Add new external functions to Z_PREFIX, remove duplicates, z_z_ -> z_
- Remove zlibdefs.h completely -- modify zconf.h instead

Changes in 1.2.3.6 (17 Jan 2010)
- Avoid void * arithmetic in gzread.c and gzwrite.c
- Make compilers happier with const char * for gz_error message
- Avoid unused parameter warning in inflate.c
- Avoid signed-unsigned comparison warning in inflate.c
- Indent #pragma's for traditional C
- Fix usage of strwinerror() in glib.c, change to gz_strwinerror()
- Correct email address in configure for system options
- Update make_vms.com and add make_vms.com to contrib/minizip [Zinser]
- Update zlib.map [Brown]
- Fix Makefile.in for Solaris 10 make of example64 and minizip64 [Torok]
- Apply various fixes to CMakeLists.txt [Lowman]
- Add checks on len in gzread() and gzwrite()
- Add error message for no more room for gzungetc()
- Remove zlib version check in gzwrite()
- Defer compression of gzprintf() result until need to
- Use snprintf() in gzdopen() if available
- Remove USE_MMAP configuration determination (only used by minigzip)
- Remove examples/pigz.c (available separately)
- Update examples/gun.c to 1.6

Changes in 1.2.3.5 (8 Jan 2010)
- Add space after #if in zutil.h for some compilers
- Fix relatively harmless bug in deflate_fast() [Exarevsky]
- Fix same problem in deflate_slow()
- Add $(SHAREDLIBV) to LIBS in Makefile.in [Brown]
- Add deflate_rle() for faster Z_RLE strategy run-length encoding
- Add deflate_huff() for faster Z_HUFFMAN_ONLY encoding
- Change name of "write" variable in inffast.c to avoid library collisions
- Fix premature EOF from gzread() in gzio.c [Brown]
- Use zlib header window size if windowBits is 0 in inflateInit2()
- Remove compressBound() call in deflate.c to avoid linking compress.o
- Replace use of errno in gz* with functions, support WinCE [Alves]
- Provide alternative to perror() in minigzip.c for WinCE [Alves]
- Don't use _vsnprintf on later versions of MSVC [Lowman]
- Add CMake build script and input file [Lowman]
- Update contrib/minizip to 1.1 [Svensson, Vollant]
- Moved nintendods directory from contrib to root
- Replace gzio.c with a new set of routines with the same functionality
- Add gzbuffer(), gzoffset(), gzclose_r(), gzclose_w() as part of above
- Update contrib/minizip to 1.1b
- Change gzeof() to return 0 on error instead of -1 to agree with zlib.h

Changes in 1.2.3.4 (21 Dec 2009)
- Use old school .SUFFIXES in Makefile.in for FreeBSD compatibility
- Update comments in configure and Makefile.in for default --shared
- Fix test -z's in configure [Marquess]
- Build examplesh and minigzipsh when not testing
- Change NULL's to Z_NULL's in deflate.c and in comments in zlib.h
- Import LDFLAGS from the environment in configure
- Fix configure to populate SFLAGS with discovered CFLAGS options
- Adapt make_vms.com to the new Makefile.in [Zinser]
- Add zlib2ansi script for C++ compilation [Marquess]
- Add _FILE_OFFSET_BITS=64 test to make test (when applicable)
- Add AMD64 assembler code for longest match to contrib [Teterin]
- Include options from $SFLAGS when doing $LDSHARED
- Simplify 64-bit file support by introducing z_off64_t type
- Make shared object files in objs directory to work around old Sun cc
- Use only three-part version number for Darwin shared compiles
- Add rc option to ar in Makefile.in for when ./configure not run
- Add -WI,-rpath,. to LDFLAGS for OSF 1 V4*
- Set LD_LIBRARYN32_PATH for SGI IRIX shared compile
- Protect against _FILE_OFFSET_BITS being defined when compiling zlib
- Rename Makefile.in targets allstatic to static and allshared to shared
- Fix static and shared Makefile.in targets to be independent
- Correct error return bug in gz_open() by setting state [Brown]
- Put spaces before ;;'s in configure for better sh compatibility
- Add pigz.c (parallel implementation of gzip) to examples/
- Correct constant in crc32.c to UL [Leventhal]
- Reject negative lengths in crc32_combine()
- Add inflateReset2() function to work like inflateEnd()/inflateInit2()
- Include sys/types.h for _LARGEFILE64_SOURCE [Brown]
- Correct typo in doc/algorithm.txt [Janik]
- Fix bug in adler32_combine() [Zhu]
- Catch missing-end-of-block-code error in all inflates and in puff
    Assures that random input to inflate eventually results in an error
- Added enough.c (calculation of ENOUGH for inftrees.h) to examples/
- Update ENOUGH and its usage to reflect discovered bounds
- Fix gzerror() error report on empty input file [Brown]
- Add ush casts in trees.c to avoid pedantic runtime errors
- Fix typo in zlib.h uncompress() description [Reiss]
- Correct inflate() comments with regard to automatic header detection
- Remove deprecation comment on Z_PARTIAL_FLUSH (it stays)
- Put new version of gzlog (2.0) in examples with interruption recovery
- Add puff compile option to permit invalid distance-too-far streams
- Add puff TEST command options, ability to read piped input
- Prototype the *64 functions in zlib.h when _FILE_OFFSET_BITS == 64, but
  _LARGEFILE64_SOURCE not defined
- Fix Z_FULL_FLUSH to truly erase the past by resetting s->strstart
- Fix deflateSetDictionary() to use all 32K for output consistency
- Remove extraneous #define MIN_LOOKAHEAD in deflate.c (in deflate.h)
- Clear bytes after deflate lookahead to avoid use of uninitialized data
- Change a limit in inftrees.c to be more transparent to Coverity Prevent
- Update win32/zlib.def with exported symbols from zlib.h
- Correct spelling errors in zlib.h [Willem, Sobrado]
- Allow Z_BLOCK for deflate() to force a new block
- Allow negative bits in inflatePrime() to delete existing bit buffer
- Add Z_TREES flush option to inflate() to return at end of trees
- Add inflateMark() to return current state information for random access
- Add Makefile for NintendoDS to contrib [Costa]
- Add -w in configure compile tests to avoid spurious warnings [Beucler]
- Fix typos in zlib.h comments for deflateSetDictionary()
- Fix EOF detection in transparent gzread() [Maier]

Changes in 1.2.3.3 (2 October 2006)
- Make --shared the default for configure, add a --static option
- Add compile option to permit invalid distance-too-far streams
- Add inflateUndermine() function which is required to enable above
- Remove use of "this" variable name for C++ compatibility [Marquess]
- Add testing of shared library in make test, if shared library built
- Use ftello() and fseeko() if available instead of ftell() and fseek()
- Provide two versions of all functions that use the z_off_t type for
  binary compatibility -- a normal version and a 64-bit offset version,
  per the Large File Support Extension when _LARGEFILE64_SOURCE is
  defined; use the 64-bit versions by default when _FILE_OFFSET_BITS
  is defined to be 64
- Add a --uname= option to configure to perhaps help with cross-compiling

Changes in 1.2.3.2 (3 September 2006)
- Turn off silly Borland warnings [Hay]
- Use off64_t and define _LARGEFILE64_SOURCE when present
- Fix missing dependency on inffixed.h in Makefile.in
- Rig configure --shared to build both shared and static [Teredesai, Truta]
- Remove zconf.in.h and instead create a new zlibdefs.h file
- Fix contrib/minizip/unzip.c non-encrypted after encrypted [Vollant]
- Add treebuild.xml (see http://treebuild.metux.de/) [Weigelt]

Changes in 1.2.3.1 (16 August 2006)
- Add watcom directory with OpenWatcom make files [Daniel]
- Remove #undef of FAR in zconf.in.h for MVS [Fedtke]
- Update make_vms.com [Zinser]
- Use -fPIC for shared build in configure [Teredesai, Nicholson]
- Use only major version number for libz.so on IRIX and OSF1 [Reinholdtsen]
- Use fdopen() (not _fdopen()) for Interix in zutil.h [Bäck]
- Add some FAQ entries about the contrib directory
- Update the MVS question in the FAQ
- Avoid extraneous reads after EOF in gzio.c [Brown]
- Correct spelling of "successfully" in gzio.c [Randers-Pehrson]
- Add comments to zlib.h about gzerror() usage [Brown]
- Set extra flags in gzip header in gzopen() like deflate() does
- Make configure options more compatible with double-dash conventions
  [Weigelt]
- Clean up compilation under Solaris SunStudio cc [Rowe, Reinholdtsen]
- Fix uninstall target in Makefile.in [Truta]
- Add pkgconfig support [Weigelt]
- Use $(DESTDIR) macro in Makefile.in [Reinholdtsen, Weigelt]
- Replace set_data_type() with a more accurate detect_data_type() in
  trees.c, according to the txtvsbin.txt document [Truta]
- Swap the order of #include <stdio.h> and #include "zlib.h" in
  gzio.c, example.c and minigzip.c [Truta]
- Shut up annoying VS2005 warnings about standard C deprecation [Rowe,
  Truta] (where?)
- Fix target "clean" from win32/Makefile.bor [Truta]
- Create .pdb and .manifest files in win32/makefile.msc [Ziegler, Rowe]
- Update zlib www home address in win32/DLL_FAQ.txt [Truta]
- Update contrib/masmx86/inffas32.asm for VS2005 [Vollant, Van Wassenhove]
- Enable browse info in the "Debug" and "ASM Debug" configurations in
  the Visual C++ 6 project, and set (non-ASM) "Debug" as default [Truta]
- Add pkgconfig support [Weigelt]
- Add ZLIB_VER_MAJOR, ZLIB_VER_MINOR and ZLIB_VER_REVISION in zlib.h,
  for use in win32/zlib1.rc [Polushin, Rowe, Truta]
- Add a document that explains the new text detection scheme to
  doc/txtvsbin.txt [Truta]
- Add rfc1950.txt, rfc1951.txt and rfc1952.txt to doc/ [Truta]
- Move algorithm.txt into doc/ [Truta]
- Synchronize FAQ with website
- Fix compressBound(), was low for some pathological cases [Fearnley]
- Take into account wrapper variations in deflateBound()
- Set examples/zpipe.c input and output to binary mode for Windows
- Update examples/zlib_how.html with new zpipe.c (also web site)
- Fix some warnings in examples/gzlog.c and examples/zran.c (it seems
  that gcc became pickier in 4.0)
- Add zlib.map for Linux: "All symbols from zlib-1.1.4 remain
  un-versioned, the patch adds versioning only for symbols introduced in
  zlib-1.2.0 or later.  It also declares as local those symbols which are
  not designed to be exported." [Levin]
- Update Z_PREFIX list in zconf.in.h, add --zprefix option to configure
- Do not initialize global static by default in trees.c, add a response
  NO_INIT_GLOBAL_POINTERS to initialize them if needed [Marquess]
- Don't use strerror() in gzio.c under WinCE [Yakimov]
- Don't use errno.h in zutil.h under WinCE [Yakimov]
- Move arguments for AR to its usage to allow replacing ar [Marot]
- Add HAVE_VISIBILITY_PRAGMA in zconf.in.h for Mozilla [Randers-Pehrson]
- Improve inflateInit() and inflateInit2() documentation
- Fix structure size comment in inflate.h
- Change configure help option from --h* to --help [Santos]

Changes in 1.2.3 (18 July 2005)
- Apply security vulnerability fixes to contrib/infback9 as well
- Clean up some text files (carriage returns, trailing space)
- Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant]

Changes in 1.2.2.4 (11 July 2005)
- Add inflatePrime() function for starting inflation at bit boundary
- Avoid some Visual C warnings in deflate.c
- Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit
  compile
- Fix some spelling errors in comments [Betts]
- Correct inflateInit2() error return documentation in zlib.h
- Add zran.c example of compressed data random access to examples
  directory, shows use of inflatePrime()
- Fix cast for assignments to strm->state in inflate.c and infback.c
- Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer]
- Move declarations of gf2 functions to right place in crc32.c [Oberhumer]
- Add cast in trees.c t avoid a warning [Oberhumer]
- Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer]
- Update make_vms.com [Zinser]
- Initialize state->write in inflateReset() since copied in inflate_fast()
- Be more strict on incomplete code sets in inflate_table() and increase
  ENOUGH and MAXD -- this repairs a possible security vulnerability for
  invalid inflate input.  Thanks to Tavis Ormandy and Markus Oberhumer for
  discovering the vulnerability and providing test cases
- Add ia64 support to configure for HP-UX [Smith]
- Add error return to gzread() for format or i/o error [Levin]
- Use malloc.h for OS/2 [Necasek]

Changes in 1.2.2.3 (27 May 2005)
- Replace 1U constants in inflate.c and inftrees.c for 64-bit compile
- Typecast fread() return values in gzio.c [Vollant]
- Remove trailing space in minigzip.c outmode (VC++ can't deal with it)
- Fix crc check bug in gzread() after gzungetc() [Heiner]
- Add the deflateTune() function to adjust internal compression parameters
- Add a fast gzip decompressor, gun.c, to examples (use of inflateBack)
- Remove an incorrect assertion in examples/zpipe.c
- Add C++ wrapper in infback9.h [Donais]
- Fix bug in inflateCopy() when decoding fixed codes
- Note in zlib.h how much deflateSetDictionary() actually uses
- Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used)
- Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer]
- Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer]
- Add gzdirect() function to indicate transparent reads
- Update contrib/minizip [Vollant]
- Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer]
- Add casts in crc32.c to avoid warnings [Oberhumer]
- Add contrib/masmx64 [Vollant]
- Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant]

Changes in 1.2.2.2 (30 December 2004)
- Replace structure assignments in deflate.c and inflate.c with zmemcpy to
  avoid implicit memcpy calls (portability for no-library compilation)
- Increase sprintf() buffer size in gzdopen() to allow for large numbers
- Add INFLATE_STRICT to check distances against zlib header
- Improve WinCE errno handling and comments [Chang]
- Remove comment about no gzip header processing in FAQ
- Add Z_FIXED strategy option to deflateInit2() to force fixed trees
- Add updated make_vms.com [Coghlan], update README
- Create a new "examples" directory, move gzappend.c there, add zpipe.c,
  fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html
- Add FAQ entry and comments in deflate.c on uninitialized memory access
- Add Solaris 9 make options in configure [Gilbert]
- Allow strerror() usage in gzio.c for STDC
- Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer]
- Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant]
- Use z_off_t for adler32_combine() and crc32_combine() lengths
- Make adler32() much faster for small len
- Use OS_CODE in deflate() default gzip header

Changes in 1.2.2.1 (31 October 2004)
- Allow inflateSetDictionary() call for raw inflate
- Fix inflate header crc check bug for file names and comments
- Add deflateSetHeader() and gz_header structure for custom gzip headers
- Add inflateGetheader() to retrieve gzip headers
- Add crc32_combine() and adler32_combine() functions
- Add alloc_func, free_func, in_func, out_func to Z_PREFIX list
- Use zstreamp consistently in zlib.h (inflate_back functions)
- Remove GUNZIP condition from definition of inflate_mode in inflate.h
  and in contrib/inflate86/inffast.S [Truta, Anderson]
- Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]
- Update projects/README.projects and projects/visualc6 [Truta]
- Update win32/DLL_FAQ.txt [Truta]
- Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]
- Deprecate Z_ASCII; use Z_TEXT instead [Truta]
- Use a new algorithm for setting strm->data_type in trees.c [Truta]
- Do not define an exit() prototype in zutil.c unless DEBUG defined
- Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]
- Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()
- Fix Darwin build version identification [Peterson]

Changes in 1.2.2 (3 October 2004)
- Update zlib.h comments on gzip in-memory processing
- Set adler to 1 in inflateReset() to support Java test suite [Walles]
- Add contrib/dotzlib [Ravn]
- Update win32/DLL_FAQ.txt [Truta]
- Update contrib/minizip [Vollant]
- Move contrib/visual-basic.txt to old/ [Truta]
- Fix assembler builds in projects/visualc6/ [Truta]

Changes in 1.2.1.2 (9 September 2004)
- Update INDEX file
- Fix trees.c to update strm->data_type (no one ever noticed!)
- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]
- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)
- Add limited multitasking protection to DYNAMIC_CRC_TABLE
- Add NO_vsnprintf for VMS in zutil.h [Mozilla]
- Don't declare strerror() under VMS [Mozilla]
- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize
- Update contrib/ada [Anisimkov]
- Update contrib/minizip [Vollant]
- Fix configure to not hardcode directories for Darwin [Peterson]
- Fix gzio.c to not return error on empty files [Brown]
- Fix indentation; update version in contrib/delphi/ZLib.pas and
  contrib/pascal/zlibpas.pas [Truta]
- Update mkasm.bat in contrib/masmx86 [Truta]
- Update contrib/untgz [Truta]
- Add projects/README.projects [Truta]
- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]
- Update win32/DLL_FAQ.txt [Truta]
- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]
- Remove an unnecessary assignment to curr in inftrees.c [Truta]
- Add OS/2 to exe builds in configure [Poltorak]
- Remove err dummy parameter in zlib.h [Kientzle]

Changes in 1.2.1.1 (9 January 2004)
- Update email address in README
- Several FAQ updates
- Fix a big fat bug in inftrees.c that prevented decoding valid
  dynamic blocks with only literals and no distance codes --
  Thanks to "Hot Emu" for the bug report and sample file
- Add a note to puff.c on no distance codes case

Changes in 1.2.1 (17 November 2003)
- Remove a tab in contrib/gzappend/gzappend.c
- Update some interfaces in contrib for new zlib functions
- Update zlib version number in some contrib entries
- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
- Support shared libraries on Hurd and KFreeBSD [Brown]
- Fix error in NO_DIVIDE option of adler32.c

Changes in 1.2.0.8 (4 November 2003)
- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
- Add experimental NO_DIVIDE #define in adler32.c
    - Possibly faster on some processors (let me know if it is)
- Correct Z_BLOCK to not return on first inflate call if no wrap
- Fix strm->data_type on inflate() return to correctly indicate EOB
- Add deflatePrime() function for appending in the middle of a byte
- Add contrib/gzappend for an example of appending to a stream
- Update win32/DLL_FAQ.txt [Truta]
- Delete Turbo C comment in README [Truta]
- Improve some indentation in zconf.h [Truta]
- Fix infinite loop on bad input in configure script [Church]
- Fix gzeof() for concatenated gzip files [Johnson]
- Add example to contrib/visual-basic.txt [Michael B.]
- Add -p to mkdir's in Makefile.in [vda]
- Fix configure to properly detect presence or lack of printf functions
- Add AS400 support [Monnerat]
- Add a little Cygwin support [Wilson]

Changes in 1.2.0.7 (21 September 2003)
- Correct some debug formats in contrib/infback9
- Cast a type in a debug statement in trees.c
- Change search and replace delimiter in configure from % to # [Beebe]
- Update contrib/untgz to 0.2 with various fixes [Truta]
- Add build support for Amiga [Nikl]
- Remove some directories in old that have been updated to 1.2
- Add dylib building for Mac OS X in configure and Makefile.in
- Remove old distribution stuff from Makefile
- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
- Update links in README

Changes in 1.2.0.6 (13 September 2003)
- Minor FAQ updates
- Update contrib/minizip to 1.00 [Vollant]
- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
- Update POSTINC comment for 68060 [Nikl]
- Add contrib/infback9 with deflate64 decoding (unsupported)
- For MVS define NO_vsnprintf and undefine FAR [van Burik]
- Add pragma for fdopen on MVS [van Burik]

Changes in 1.2.0.5 (8 September 2003)
- Add OF to inflateBackEnd() declaration in zlib.h
- Remember start when using gzdopen in the middle of a file
- Use internal off_t counters in gz* functions to properly handle seeks
- Perform more rigorous check for distance-too-far in inffast.c
- Add Z_BLOCK flush option to return from inflate at block boundary
- Set strm->data_type on return from inflate
    - Indicate bits unused, if at block boundary, and if in last block
- Replace size_t with ptrdiff_t in crc32.c, and check for correct size
- Add condition so old NO_DEFLATE define still works for compatibility
- FAQ update regarding the Windows DLL [Truta]
- INDEX update: add qnx entry, remove aix entry [Truta]
- Install zlib.3 into mandir [Wilson]
- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
- Adapt the zlib interface to the new DLL convention guidelines [Truta]
- Introduce ZLIB_WINAPI macro to allow the export of functions using
  the WINAPI calling convention, for Visual Basic [Vollant, Truta]
- Update msdos and win32 scripts and makefiles [Truta]
- Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
- Add contrib/ada [Anisimkov]
- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
- Add contrib/masm686 [Truta]
- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
  [Truta, Vollant]
- Update contrib/delphi; rename to contrib/pascal; add example [Truta]
- Remove contrib/delphi2; add a new contrib/delphi [Truta]
- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
  and fix some method prototypes [Truta]
- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
  [Truta]
- Avoid the use of backslash (\) in contrib/minizip [Vollant]
- Fix file time handling in contrib/untgz; update makefiles [Truta]
- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
  [Vollant]
- Remove contrib/vstudio/vc15_16 [Vollant]
- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
- Update README.contrib [Truta]
- Invert the assignment order of match_head and s->prev[...] in
  INSERT_STRING [Truta]
- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
  [Truta]
- Compare function pointers with 0, not with NULL or Z_NULL [Truta]
- Fix prototype of syncsearch in inflate.c [Truta]
- Introduce ASMINF macro to be enabled when using an ASM implementation
  of inflate_fast [Truta]
- Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
- Modify test_gzio in example.c to take a single file name as a
  parameter [Truta]
- Exit the example.c program if gzopen fails [Truta]
- Add type casts around strlen in example.c [Truta]
- Remove casting to sizeof in minigzip.c; give a proper type
  to the variable compared with SUFFIX_LEN [Truta]
- Update definitions of STDC and STDC99 in zconf.h [Truta]
- Synchronize zconf.h with the new Windows DLL interface [Truta]
- Use SYS16BIT instead of __32BIT__ to distinguish between
  16- and 32-bit platforms [Truta]
- Use far memory allocators in small 16-bit memory models for
  Turbo C [Truta]
- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
  zlibCompileFlags [Truta]
- Cygwin has vsnprintf [Wilson]
- In Windows16, OS_CODE is 0, as in MSDOS [Truta]
- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]

Changes in 1.2.0.4 (10 August 2003)
- Minor FAQ updates
- Be more strict when checking inflateInit2's windowBits parameter
- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
- Add gzip wrapper option to deflateInit2 using windowBits
- Add updated QNX rule in configure and qnx directory [Bonnefoy]
- Make inflate distance-too-far checks more rigorous
- Clean up FAR usage in inflate
- Add casting to sizeof() in gzio.c and minigzip.c

Changes in 1.2.0.3 (19 July 2003)
- Fix silly error in gzungetc() implementation [Vollant]
- Update contrib/minizip and contrib/vstudio [Vollant]
- Fix printf format in example.c
- Correct cdecl support in zconf.in.h [Anisimkov]
- Minor FAQ updates

Changes in 1.2.0.2 (13 July 2003)
- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
- Attempt to avoid warnings in crc32.c for pointer-int conversion
- Add AIX to configure, remove aix directory [Bakker]
- Add some casts to minigzip.c
- Improve checking after insecure sprintf() or vsprintf() calls
- Remove #elif's from crc32.c
- Change leave label to inf_leave in inflate.c and infback.c to avoid
  library conflicts
- Remove inflate gzip decoding by default--only enable gzip decoding by
  special request for stricter backward compatibility
- Add zlibCompileFlags() function to return compilation information
- More typecasting in deflate.c to avoid warnings
- Remove leading underscore from _Capital #defines [Truta]
- Fix configure to link shared library when testing
- Add some Windows CE target adjustments [Mai]
- Remove #define ZLIB_DLL in zconf.h [Vollant]
- Add zlib.3 [Rodgers]
- Update RFC URL in deflate.c and algorithm.txt [Mai]
- Add zlib_dll_FAQ.txt to contrib [Truta]
- Add UL to some constants [Truta]
- Update minizip and vstudio [Vollant]
- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
- Expand use of NO_DUMMY_DECL to avoid all dummy structures
- Added iostream3 to contrib [Schwardt]
- Replace rewind() with fseek() for WinCE [Truta]
- Improve setting of zlib format compression level flags
    - Report 0 for huffman and rle strategies and for level == 0 or 1
    - Report 2 only for level == 6
- Only deal with 64K limit when necessary at compile time [Truta]
- Allow TOO_FAR check to be turned off at compile time [Truta]
- Add gzclearerr() function [Souza]
- Add gzungetc() function

Changes in 1.2.0.1 (17 March 2003)
- Add Z_RLE strategy for run-length encoding [Truta]
    - When Z_RLE requested, restrict matches to distance one
    - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE
- Correct FASTEST compilation to allow level == 0
- Clean up what gets compiled for FASTEST
- Incorporate changes to zconf.in.h [Vollant]
    - Refine detection of Turbo C need for dummy returns
    - Refine ZLIB_DLL compilation
    - Include additional header file on VMS for off_t typedef
- Try to use _vsnprintf where it supplants vsprintf [Vollant]
- Add some casts in inffast.c
- Enhance comments in zlib.h on what happens if gzprintf() tries to
  write more than 4095 bytes before compression
- Remove unused state from inflateBackEnd()
- Remove exit(0) from minigzip.c, example.c
- Get rid of all those darn tabs
- Add "check" target to Makefile.in that does the same thing as "test"
- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in
- Update contrib/inflate86 [Anderson]
- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]
- Add msdos and win32 directories with makefiles [Truta]
- More additions and improvements to the FAQ

Changes in 1.2.0 (9 March 2003)
- New and improved inflate code
    - About 20% faster
    - Does not allocate 32K window unless and until needed
    - Automatically detects and decompresses gzip streams
    - Raw inflate no longer needs an extra dummy byte at end
    - Added inflateBack functions using a callback interface--even faster
      than inflate, useful for file utilities (gzip, zip)
    - Added inflateCopy() function to record state for random access on
      externally generated deflate streams (e.g. in gzip files)
    - More readable code (I hope)
- New and improved crc32()
    - About 50% faster, thanks to suggestions from Rodney Brown
- Add deflateBound() and compressBound() functions
- Fix memory leak in deflateInit2()
- Permit setting dictionary for raw deflate (for parallel deflate)
- Fix const declaration for gzwrite()
- Check for some malloc() failures in gzio.c
- Fix bug in gzopen() on single-byte file 0x1f
- Fix bug in gzread() on concatenated file with 0x1f at end of buffer
  and next buffer doesn't start with 0x8b
- Fix uncompress() to return Z_DATA_ERROR on truncated input
- Free memory at end of example.c
- Remove MAX #define in trees.c (conflicted with some libraries)
- Fix static const's in deflate.c, gzio.c, and zutil.[ch]
- Declare malloc() and free() in gzio.c if STDC not defined
- Use malloc() instead of calloc() in zutil.c if int big enough
- Define STDC for AIX
- Add aix/ with approach for compiling shared library on AIX
- Add HP-UX support for shared libraries in configure
- Add OpenUNIX support for shared libraries in configure
- Use $cc instead of gcc to build shared library
- Make prefix directory if needed when installing
- Correct Macintosh avoidance of typedef Byte in zconf.h
- Correct Turbo C memory allocation when under Linux
- Use libz.a instead of -lz in Makefile (assure use of compiled library)
- Update configure to check for snprintf or vsnprintf functions and their
  return value, warn during make if using an insecure function
- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that
  is lost when library is used--resolution is to build new zconf.h
- Documentation improvements (in zlib.h):
    - Document raw deflate and inflate
    - Update RFCs URL
    - Point out that zlib and gzip formats are different
    - Note that Z_BUF_ERROR is not fatal
    - Document string limit for gzprintf() and possible buffer overflow
    - Note requirement on avail_out when flushing
    - Note permitted values of flush parameter of inflate()
- Add some FAQs (and even answers) to the FAQ
- Add contrib/inflate86/ for x86 faster inflate
- Add contrib/blast/ for PKWare Data Compression Library decompression
- Add contrib/puff/ simple inflate for deflate format description

Changes in 1.1.4 (11 March 2002)
- ZFREE was repeated on same allocation on some error conditions
  This creates a security problem described in
  http://www.zlib.org/advisory-2002-03-11.txt
- Returned incorrect error (Z_MEM_ERROR) on some invalid data
- Avoid accesses before window for invalid distances with inflate window
  less than 32K
- force windowBits > 8 to avoid a bug in the encoder for a window size
  of 256 bytes. (A complete fix will be available in 1.1.5)

Changes in 1.1.3 (9 July 1998)
- fix "an inflate input buffer bug that shows up on rare but persistent
  occasions" (Mark)
- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
- fix gzseek(..., SEEK_SET) in write mode
- fix crc check after a gzeek (Frank Faubert)
- fix miniunzip when the last entry in a zip file is itself a zip file
  (J Lillge)
- add contrib/asm586 and contrib/asm686 (Brian Raiter)
  See http://www.muppetlabs.com/~breadbox/software/assembly.html
- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
- added a FAQ file

- Support gzdopen on Mac with Metrowerks (Jason Linhart)
- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
- avoid some warnings with Borland C (Tom Tanner)
- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
- emulate utime() for WIN32 in contrib/untgz  (Gilles Vollant)
- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
- use libdir and includedir in Makefile.in (Tim Mooney)
- support shared libraries on OSF1 V4 (Tim Mooney)
- remove so_locations in "make clean"  (Tim Mooney)
- fix maketree.c compilation error (Glenn, Mark)
- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
- new Makefile.riscos (Rich Walker)
- initialize static descriptors in trees.c for embedded targets (Nick Smith)
- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
- fix maketree.c to allow clean compilation of inffixed.h (Mark)
- fix parameter check in deflateCopy (Gunther Nikl)
- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
- Many portability patches by Christian Spieler:
  . zutil.c, zutil.h: added "const" for zmem*
  . Make_vms.com: fixed some typos
  . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
  . msdos/Makefile.msc: remove "default rtl link library" info from obj files
  . msdos/Makefile.*: use model-dependent name for the built zlib library
  . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
     new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
- replace __far with _far for better portability (Christian Spieler, Tom Lane)
- fix test for errno.h in configure (Tim Newsham)

Changes in 1.1.2 (19 March 98)
- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
  See http://www.winimage.com/zLibDll/unzip.html
- preinitialize the inflate tables for fixed codes, to make the code
  completely thread safe (Mark)
- some simplifications and slight speed-up to the inflate code (Mark)
- fix gzeof on non-compressed files (Allan Schrum)
- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
- do not wrap extern "C" around system includes (Tom Lane)
- mention zlib binding for TCL in README (Andreas Kupries)
- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
- allow "configure --prefix $HOME" (Tim Mooney)
- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)
- move Makefile.sas to amiga/Makefile.sas

Changes in 1.1.1 (27 Feb 98)
- fix macros _tr_tally_* in deflate.h for debug mode  (Glenn Randers-Pehrson)
- remove block truncation heuristic which had very marginal effect for zlib
  (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the
  compression ratio on some files. This also allows inlining _tr_tally for
  matches in deflate_slow
- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)

Changes in 1.1.0 (24 Feb 98)
- do not return STREAM_END prematurely in inflate (John Bowler)
- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
- compile with -DFASTEST to get compression code optimized for speed only
- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
  on Sun but significant on HP)

- add a pointer to experimental unzip library in README (Gilles Vollant)
- initialize variable gcc in configure (Chris Herborth)

Changes in 1.0.9 (17 Feb 1998)
- added gzputs and gzgets functions
- do not clear eof flag in gzseek (Mark Diekhans)
- fix gzseek for files in transparent mode (Mark Diekhans)
- do not assume that vsprintf returns the number of bytes written (Jens Krinke)
- replace EXPORT with ZEXPORT to avoid conflict with other programs
- added compress2 in zconf.h, zlib.def, zlib.dnt
- new asm code from Gilles Vollant in contrib/asm386
- simplify the inflate code (Mark):
 . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
 . ZALLOC the length list in inflate_trees_fixed() instead of using stack
 . ZALLOC the value area for huft_build() instead of using stack
 . Simplify Z_FINISH check in inflate()

- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
  the declaration of FAR (Gilles Vollant)
- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
- read_buf buf parameter of type Bytef* instead of charf*
- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
- do not redeclare unlink in minigzip.c for WIN32 (John Bowler)
- fix check for presence of directories in "make install" (Ian Willis)

Changes in 1.0.8 (27 Jan 1998)
- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
- fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
- added compress2() to allow setting the compression level
- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
- use constant arrays for the static trees in trees.c instead of computing
  them at run time (thanks to Ken Raeburn for this suggestion). To create
  trees.h, compile with GEN_TREES_H and run "make test"
- check return code of example in "make test" and display result
- pass minigzip command line options to file_compress
- simplifying code of inflateSync to avoid gcc 2.8 bug

- support CC="gcc -Wall" in configure -s (QingLong)
- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)
- fix test for shared library support to avoid compiler warnings
- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)
- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)
- do not use fdopen for Metrowerks on Mac (Brad Pettit))
- add checks for gzputc and gzputc in example.c
- avoid warnings in gzio.c and deflate.c (Andreas Kleinert)
- use const for the CRC table (Ken Raeburn)
- fixed "make uninstall" for shared libraries
- use Tracev instead of Trace in infblock.c
- in example.c use correct compressed length for test_sync
- suppress +vnocompatwarnings in configure for HPUX (not always supported)

Changes in 1.0.7 (20 Jan 1998)
- fix gzseek which was broken in write mode
- return error for gzseek to negative absolute position
- fix configure for Linux (Chun-Chung Chen)
- increase stack space for MSC (Tim Wegner)
- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
- define EXPORTVA for gzprintf (Gilles Vollant)
- added man page zlib.3 (Rick Rodgers)
- for contrib/untgz, fix makedir() and improve Makefile

- check gzseek in write mode in example.c
- allocate extra buffer for seeks only if gzseek is actually called
- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)
- add inflateSyncPoint in zconf.h
- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def

Changes in 1.0.6 (19 Jan 1998)
- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and
  gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)
- Fix a deflate bug occurring only with compression level 0 (thanks to
  Andy Buckler for finding this one)
- In minigzip, pass transparently also the first byte for .Z files
- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()
- check Z_FINISH in inflate (thanks to Marc Schluper)
- Implement deflateCopy (thanks to Adam Costello)
- make static libraries by default in configure, add --shared option
- move MSDOS or Windows specific files to directory msdos
- suppress the notion of partial flush to simplify the interface
  (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)
- suppress history buffer provided by application to simplify the interface
  (this feature was not implemented anyway in 1.0.4)
- next_in and avail_in must be initialized before calling inflateInit or
  inflateInit2
- add EXPORT in all exported functions (for Windows DLL)
- added Makefile.nt (thanks to Stephen Williams)
- added the unsupported "contrib" directory:
   contrib/asm386/ by Gilles Vollant <info@winimage.com>
        386 asm code replacing longest_match()
   contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
        A C++ I/O streams interface to the zlib gz* functions
   contrib/iostream2/  by Tyge Løvset <Tyge.Lovset@cmr.no>
        Another C++ I/O streams interface
   contrib/untgz/  by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
        A very simple tar.gz file extractor using zlib
   contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
        How to use compress(), uncompress() and the gz* functions from VB
- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression
  level) in minigzip (thanks to Tom Lane)

- use const for rommable constants in deflate
- added test for gzseek and gztell in example.c
- add undocumented function inflateSyncPoint() (hack for Paul Mackerras)
- add undocumented function zError to convert error code to string
  (for Tim Smithers)
- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code
- Use default memcpy for Symantec MSDOS compiler
- Add EXPORT keyword for check_func (needed for Windows DLL)
- add current directory to LD_LIBRARY_PATH for "make test"
- create also a link for libz.so.1
- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)
- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)
- added -soname for Linux in configure (Chun-Chung Chen,
- assign numbers to the exported functions in zlib.def (for Windows DLL)
- add advice in zlib.h for best usage of deflateSetDictionary
- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)
- allow compilation with ANSI keywords only enabled for TurboC in large model
- avoid "versionString"[0] (Borland bug)
- add NEED_DUMMY_RETURN for Borland
- use variable z_verbose for tracing in debug mode (L. Peter Deutsch)
- allow compilation with CC
- defined STDC for OS/2 (David Charlap)
- limit external names to 8 chars for MVS (Thomas Lund)
- in minigzip.c, use static buffers only for 16-bit systems
- fix suffix check for "minigzip -d foo.gz"
- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)
- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)
- added makelcc.bat for lcc-win32 (Tom St Denis)
- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)
- Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion
- check for unistd.h in configure (for off_t)
- remove useless check parameter in inflate_blocks_free
- avoid useless assignment of s->check to itself in inflate_blocks_new
- do not flush twice in gzclose (thanks to Ken Raeburn)
- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h
- use NO_ERRNO_H instead of enumeration of operating systems with errno.h
- work around buggy fclose on pipes for HP/UX
- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)
- fix configure if CC is already equal to gcc

Changes in 1.0.5 (3 Jan 98)
- Fix inflate to terminate gracefully when fed corrupted or invalid data
- Use const for rommable constants in inflate
- Eliminate memory leaks on error conditions in inflate
- Removed some vestigial code in inflate
- Update web address in README

Changes in 1.0.4 (24 Jul 96)
- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF
  bit, so the decompressor could decompress all the correct data but went
  on to attempt decompressing extra garbage data. This affected minigzip too
- zlibVersion and gzerror return const char* (needed for DLL)
- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)
- use z_error only for DEBUG (avoid problem with DLLs)

Changes in 1.0.3 (2 Jul 96)
- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS
  small and medium models; this makes the library incompatible with previous
  versions for these models. (No effect in large model or on other systems.)
- return OK instead of BUF_ERROR if previous deflate call returned with
  avail_out as zero but there is nothing to do
- added memcmp for non STDC compilers
- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)
- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)
- better check for 16-bit mode MSC (avoids problem with Symantec)

Changes in 1.0.2 (23 May 96)
- added Windows DLL support
- added a function zlibVersion (for the DLL support)
- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)
- Bytef is define's instead of typedef'd only for Borland C
- avoid reading uninitialized memory in example.c
- mention in README that the zlib format is now RFC1950
- updated Makefile.dj2
- added algorithm.doc

Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
- fix array overlay in deflate.c which sometimes caused bad compressed data
- fix inflate bug with empty stored block
- fix MSDOS medium model which was broken in 0.99
- fix deflateParams() which could generate bad compressed data
- Bytef is define'd instead of typedef'ed (work around Borland bug)
- added an INDEX file
- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),
  Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)
- speed up adler32 for modern machines without auto-increment
- added -ansi for IRIX in configure
- static_init_done in trees.c is an int
- define unlink as delete for VMS
- fix configure for QNX
- add configure branch for SCO and HPUX
- avoid many warnings (unused variables, dead assignments, etc...)
- no fdopen for BeOS
- fix the Watcom fix for 32 bit mode (define FAR as empty)
- removed redefinition of Byte for MKWERKS
- work around an MWKERKS bug (incorrect merge of all .h files)

Changes in 0.99 (27 Jan 96)
- allow preset dictionary shared between compressor and decompressor
- allow compression level 0 (no compression)
- add deflateParams in zlib.h: allow dynamic change of compression level
  and compression strategy
- test large buffers and deflateParams in example.c
- add optional "configure" to build zlib as a shared library
- suppress Makefile.qnx, use configure instead
- fixed deflate for 64-bit systems (detected on Cray)
- fixed inflate_blocks for 64-bit systems (detected on Alpha)
- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)
- always return Z_BUF_ERROR when deflate() has nothing to do
- deflateInit and inflateInit are now macros to allow version checking
- prefix all global functions and types with z_ with -DZ_PREFIX
- make falloc completely reentrant (inftrees.c)
- fixed very unlikely race condition in ct_static_init
- free in reverse order of allocation to help memory manager
- use zlib-1.0/* instead of zlib/* inside the tar.gz
- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith
  -Wconversion -Wstrict-prototypes -Wmissing-prototypes"
- allow gzread on concatenated .gz files
- deflateEnd now returns Z_DATA_ERROR if it was premature
- deflate is finally (?) fully deterministic (no matches beyond end of input)
- Document Z_SYNC_FLUSH
- add uninstall in Makefile
- Check for __cpluplus in zlib.h
- Better test in ct_align for partial flush
- avoid harmless warnings for Borland C++
- initialize hash_head in deflate.c
- avoid warning on fdopen (gzio.c) for HP cc -Aa
- include stdlib.h for STDC compilers
- include errno.h for Cray
- ignore error if ranlib doesn't exist
- call ranlib twice for NeXTSTEP
- use exec_prefix instead of prefix for libz.a
- renamed ct_* as _tr_* to avoid conflict with applications
- clear z->msg in inflateInit2 before any error return
- initialize opaque in example.c, gzio.c, deflate.c and inflate.c
- fixed typo in zconf.h (_GNUC__ => __GNUC__)
- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)
- fix typo in Make_vms.com (f$trnlnm -> f$getsyi)
- in fcalloc, normalize pointer if size > 65520 bytes
- don't use special fcalloc for 32 bit Borland C++
- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc.
- use Z_BINARY instead of BINARY
- document that gzclose after gzdopen will close the file
- allow "a" as mode in gzopen
- fix error checking in gzread
- allow skipping .gz extra-field on pipes
- added reference to Perl interface in README
- put the crc table in FAR data (I dislike more and more the medium model :)
- added get_crc_table
- added a dimension to all arrays (Borland C can't count)
- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast
- guard against multiple inclusion of *.h (for precompiled header on Mac)
- Watcom C pretends to be Microsoft C small model even in 32 bit mode
- don't use unsized arrays to avoid silly warnings by Visual C++:
     warning C4746: 'inflate_mask' : unsized array treated as  '__far'
     (what's wrong with far data in far model?)
- define enum out of inflate_blocks_state to allow compilation with C++

Changes in 0.95 (16 Aug 95)
- fix MSDOS small and medium model (now easier to adapt to any compiler)
- inlined send_bits
- fix the final (:-) bug for deflate with flush (output was correct but
  not completely flushed in rare occasions)
- default window size is same for compression and decompression
  (it's now sufficient to set MAX_WBITS in zconf.h)
- voidp -> voidpf and voidnp -> voidp (for consistency with other
  typedefs and because voidnp was not near in large model)

Changes in 0.94 (13 Aug 95)
- support MSDOS medium model
- fix deflate with flush (could sometimes generate bad output)
- fix deflateReset (zlib header was incorrectly suppressed)
- added support for VMS
- allow a compression level in gzopen()
- gzflush now calls fflush
- For deflate with flush, flush even if no more input is provided
- rename libgz.a as libz.a
- avoid complex expression in infcodes.c triggering Turbo C bug
- work around a problem with gcc on Alpha (in INSERT_STRING)
- don't use inline functions (problem with some gcc versions)
- allow renaming of Byte, uInt, etc... with #define
- avoid warning about (unused) pointer before start of array in deflate.c
- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c
- avoid reserved word 'new' in trees.c

Changes in 0.93 (25 June 95)
- temporarily disable inline functions
- make deflate deterministic
- give enough lookahead for PARTIAL_FLUSH
- Set binary mode for stdin/stdout in minigzip.c for OS/2
- don't even use signed char in inflate (not portable enough)
- fix inflate memory leak for segmented architectures

Changes in 0.92 (3 May 95)
- don't assume that char is signed (problem on SGI)
- Clear bit buffer when starting a stored block
- no memcpy on Pyramid
- suppressed inftest.c
- optimized fill_window, put longest_match inline for gcc
- optimized inflate on stored blocks
- untabify all sources to simplify patches

Changes in 0.91 (2 May 95)
- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
- Document the memory requirements in zconf.h
- added "make install"
- fix sync search logic in inflateSync
- deflate(Z_FULL_FLUSH) now works even if output buffer too short
- after inflateSync, don't scare people with just "lo world"
- added support for DJGPP

Changes in 0.9 (1 May 95)
- don't assume that zalloc clears the allocated memory (the TurboC bug
  was Mark's bug after all :)
- let again gzread copy uncompressed data unchanged (was working in 0.71)
- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
- added a test of inflateSync in example.c
- moved MAX_WBITS to zconf.h because users might want to change that
- document explicitly that zalloc(64K) on MSDOS must return a normalized
  pointer (zero offset)
- added Makefiles for Microsoft C, Turbo C, Borland C++
- faster crc32()

Changes in 0.8 (29 April 95)
- added fast inflate (inffast.c)
- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this
  is incompatible with previous versions of zlib which returned Z_OK
- work around a TurboC compiler bug (bad code for b << 0, see infutil.h)
  (actually that was not a compiler bug, see 0.81 above)
- gzread no longer reads one extra byte in certain cases
- In gzio destroy(), don't reference a freed structure
- avoid many warnings for MSDOS
- avoid the ERROR symbol which is used by MS Windows

Changes in 0.71 (14 April 95)
- Fixed more MSDOS compilation problems :( There is still a bug with
  TurboC large model

Changes in 0.7 (14 April 95)
- Added full inflate support
- Simplified the crc32() interface. The pre- and post-conditioning
  (one's complement) is now done inside crc32(). WARNING: this is
  incompatible with previous versions; see zlib.h for the new usage

Changes in 0.61 (12 April 95)
- workaround for a bug in TurboC. example and minigzip now work on MSDOS

Changes in 0.6 (11 April 95)
- added minigzip.c
- added gzdopen to reopen a file descriptor as gzFile
- added transparent reading of non-gziped files in gzread
- fixed bug in gzread (don't read crc as data)
- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose)
- don't allocate big arrays in the stack (for MSDOS)
- fix some MSDOS compilation problems

Changes in 0.5:
- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but
  not yet Z_FULL_FLUSH
- support decompression but only in a single step (forced Z_FINISH)
- added opaque object for zalloc and zfree
- added deflateReset and inflateReset
- added a variable zlib_version for consistency checking
- renamed the 'filter' parameter of deflateInit2 as 'strategy'
  Added Z_FILTERED and Z_HUFFMAN_ONLY constants

Changes in 0.4:
- avoid "zip" everywhere, use zlib instead of ziplib
- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush
  if compression method == 8
- added adler32 and crc32
- renamed deflateOptions as deflateInit2, call one or the other but not both
- added the method parameter for deflateInit2
- added inflateInit2
- simplified considerably deflateInit and inflateInit by not supporting
  user-provided history buffer. This is supported only in deflateInit2
  and inflateInit2

Changes in 0.3:
- prefix all macro names with Z_
- use Z_FINISH instead of deflateEnd to finish compression
- added Z_HUFFMAN_ONLY
- added gzerror()
Added compat/zlib/FAQ.















































































































































































































































































































































































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                Frequently Asked Questions about zlib


If your question is not there, please check the zlib home page
http://zlib.net/ which may have more recent information.
The latest zlib FAQ is at http://zlib.net/zlib_faq.html


 1. Is zlib Y2K-compliant?

    Yes. zlib doesn't handle dates.

 2. Where can I get a Windows DLL version?

    The zlib sources can be compiled without change to produce a DLL.  See the
    file win32/DLL_FAQ.txt in the zlib distribution.

 3. Where can I get a Visual Basic interface to zlib?

    See
        * http://marknelson.us/1997/01/01/zlib-engine/
        * win32/DLL_FAQ.txt in the zlib distribution

 4. compress() returns Z_BUF_ERROR.

    Make sure that before the call of compress(), the length of the compressed
    buffer is equal to the available size of the compressed buffer and not
    zero.  For Visual Basic, check that this parameter is passed by reference
    ("as any"), not by value ("as long").

 5. deflate() or inflate() returns Z_BUF_ERROR.

    Before making the call, make sure that avail_in and avail_out are not zero.
    When setting the parameter flush equal to Z_FINISH, also make sure that
    avail_out is big enough to allow processing all pending input.  Note that a
    Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be
    made with more input or output space.  A Z_BUF_ERROR may in fact be
    unavoidable depending on how the functions are used, since it is not
    possible to tell whether or not there is more output pending when
    strm.avail_out returns with zero.  See http://zlib.net/zlib_how.html for a
    heavily annotated example.

 6. Where's the zlib documentation (man pages, etc.)?

    It's in zlib.h .  Examples of zlib usage are in the files test/example.c
    and test/minigzip.c, with more in examples/ .

 7. Why don't you use GNU autoconf or libtool or ...?

    Because we would like to keep zlib as a very small and simple package.
    zlib is rather portable and doesn't need much configuration.

 8. I found a bug in zlib.

    Most of the time, such problems are due to an incorrect usage of zlib.
    Please try to reproduce the problem with a small program and send the
    corresponding source to us at zlib@gzip.org .  Do not send multi-megabyte
    data files without prior agreement.

 9. Why do I get "undefined reference to gzputc"?

    If "make test" produces something like

       example.o(.text+0x154): undefined reference to `gzputc'

    check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
    /usr/X11R6/lib. Remove any old versions, then do "make install".

10. I need a Delphi interface to zlib.

    See the contrib/delphi directory in the zlib distribution.

11. Can zlib handle .zip archives?

    Not by itself, no.  See the directory contrib/minizip in the zlib
    distribution.

12. Can zlib handle .Z files?

    No, sorry.  You have to spawn an uncompress or gunzip subprocess, or adapt
    the code of uncompress on your own.

13. How can I make a Unix shared library?

    By default a shared (and a static) library is built for Unix.  So:

    make distclean
    ./configure
    make

14. How do I install a shared zlib library on Unix?

    After the above, then:

    make install

    However, many flavors of Unix come with a shared zlib already installed.
    Before going to the trouble of compiling a shared version of zlib and
    trying to install it, you may want to check if it's already there!  If you
    can #include <zlib.h>, it's there.  The -lz option will probably link to
    it.  You can check the version at the top of zlib.h or with the
    ZLIB_VERSION symbol defined in zlib.h .

15. I have a question about OttoPDF.

    We are not the authors of OttoPDF. The real author is on the OttoPDF web
    site: Joel Hainley, jhainley@myndkryme.com.

16. Can zlib decode Flate data in an Adobe PDF file?

    Yes. See http://www.pdflib.com/ . To modify PDF forms, see
    http://sourceforge.net/projects/acroformtool/ .

17. Why am I getting this "register_frame_info not found" error on Solaris?

    After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
    generates an error such as:

        ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
        symbol __register_frame_info: referenced symbol not found

    The symbol __register_frame_info is not part of zlib, it is generated by
    the C compiler (cc or gcc).  You must recompile applications using zlib
    which have this problem.  This problem is specific to Solaris.  See
    http://www.sunfreeware.com for Solaris versions of zlib and applications
    using zlib.

18. Why does gzip give an error on a file I make with compress/deflate?

    The compress and deflate functions produce data in the zlib format, which
    is different and incompatible with the gzip format.  The gz* functions in
    zlib on the other hand use the gzip format.  Both the zlib and gzip formats
    use the same compressed data format internally, but have different headers
    and trailers around the compressed data.

19. Ok, so why are there two different formats?

    The gzip format was designed to retain the directory information about a
    single file, such as the name and last modification date.  The zlib format
    on the other hand was designed for in-memory and communication channel
    applications, and has a much more compact header and trailer and uses a
    faster integrity check than gzip.

20. Well that's nice, but how do I make a gzip file in memory?

    You can request that deflate write the gzip format instead of the zlib
    format using deflateInit2().  You can also request that inflate decode the
    gzip format using inflateInit2().  Read zlib.h for more details.

21. Is zlib thread-safe?

    Yes.  However any library routines that zlib uses and any application-
    provided memory allocation routines must also be thread-safe.  zlib's gz*
    functions use stdio library routines, and most of zlib's functions use the
    library memory allocation routines by default.  zlib's *Init* functions
    allow for the application to provide custom memory allocation routines.

    Of course, you should only operate on any given zlib or gzip stream from a
    single thread at a time.

22. Can I use zlib in my commercial application?

    Yes.  Please read the license in zlib.h.

23. Is zlib under the GNU license?

    No.  Please read the license in zlib.h.

24. The license says that altered source versions must be "plainly marked". So
    what exactly do I need to do to meet that requirement?

    You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h.  In
    particular, the final version number needs to be changed to "f", and an
    identification string should be appended to ZLIB_VERSION.  Version numbers
    x.x.x.f are reserved for modifications to zlib by others than the zlib
    maintainers.  For example, if the version of the base zlib you are altering
    is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
    ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3".  You can also
    update the version strings in deflate.c and inftrees.c.

    For altered source distributions, you should also note the origin and
    nature of the changes in zlib.h, as well as in ChangeLog and README, along
    with the dates of the alterations.  The origin should include at least your
    name (or your company's name), and an email address to contact for help or
    issues with the library.

    Note that distributing a compiled zlib library along with zlib.h and
    zconf.h is also a source distribution, and so you should change
    ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
    in zlib.h as you would for a full source distribution.

25. Will zlib work on a big-endian or little-endian architecture, and can I
    exchange compressed data between them?

    Yes and yes.

26. Will zlib work on a 64-bit machine?

    Yes.  It has been tested on 64-bit machines, and has no dependence on any
    data types being limited to 32-bits in length.  If you have any
    difficulties, please provide a complete problem report to zlib@gzip.org

27. Will zlib decompress data from the PKWare Data Compression Library?

    No.  The PKWare DCL uses a completely different compressed data format than
    does PKZIP and zlib.  However, you can look in zlib's contrib/blast
    directory for a possible solution to your problem.

28. Can I access data randomly in a compressed stream?

    No, not without some preparation.  If when compressing you periodically use
    Z_FULL_FLUSH, carefully write all the pending data at those points, and
    keep an index of those locations, then you can start decompression at those
    points.  You have to be careful to not use Z_FULL_FLUSH too often, since it
    can significantly degrade compression.  Alternatively, you can scan a
    deflate stream once to generate an index, and then use that index for
    random access.  See examples/zran.c .

29. Does zlib work on MVS, OS/390, CICS, etc.?

    It has in the past, but we have not heard of any recent evidence.  There
    were working ports of zlib 1.1.4 to MVS, but those links no longer work.
    If you know of recent, successful applications of zlib on these operating
    systems, please let us know.  Thanks.

30. Is there some simpler, easier to read version of inflate I can look at to
    understand the deflate format?

    First off, you should read RFC 1951.  Second, yes.  Look in zlib's
    contrib/puff directory.

31. Does zlib infringe on any patents?

    As far as we know, no.  In fact, that was originally the whole point behind
    zlib.  Look here for some more information:

    http://www.gzip.org/#faq11

32. Can zlib work with greater than 4 GB of data?

    Yes.  inflate() and deflate() will process any amount of data correctly.
    Each call of inflate() or deflate() is limited to input and output chunks
    of the maximum value that can be stored in the compiler's "unsigned int"
    type, but there is no limit to the number of chunks.  Note however that the
    strm.total_in and strm_total_out counters may be limited to 4 GB.  These
    counters are provided as a convenience and are not used internally by
    inflate() or deflate().  The application can easily set up its own counters
    updated after each call of inflate() or deflate() to count beyond 4 GB.
    compress() and uncompress() may be limited to 4 GB, since they operate in a
    single call.  gzseek() and gztell() may be limited to 4 GB depending on how
    zlib is compiled.  See the zlibCompileFlags() function in zlib.h.

    The word "may" appears several times above since there is a 4 GB limit only
    if the compiler's "long" type is 32 bits.  If the compiler's "long" type is
    64 bits, then the limit is 16 exabytes.

33. Does zlib have any security vulnerabilities?

    The only one that we are aware of is potentially in gzprintf().  If zlib is
    compiled to use sprintf() or vsprintf(), then there is no protection
    against a buffer overflow of an 8K string space (or other value as set by
    gzbuffer()), other than the caller of gzprintf() assuring that the output
    will not exceed 8K.  On the other hand, if zlib is compiled to use
    snprintf() or vsnprintf(), which should normally be the case, then there is
    no vulnerability.  The ./configure script will display warnings if an
    insecure variation of sprintf() will be used by gzprintf().  Also the
    zlibCompileFlags() function will return information on what variant of
    sprintf() is used by gzprintf().

    If you don't have snprintf() or vsnprintf() and would like one, you can
    find a portable implementation here:

        http://www.ijs.si/software/snprintf/

    Note that you should be using the most recent version of zlib.  Versions
    1.1.3 and before were subject to a double-free vulnerability, and versions
    1.2.1 and 1.2.2 were subject to an access exception when decompressing
    invalid compressed data.

34. Is there a Java version of zlib?

    Probably what you want is to use zlib in Java. zlib is already included
    as part of the Java SDK in the java.util.zip package. If you really want
    a version of zlib written in the Java language, look on the zlib home
    page for links: http://zlib.net/ .

35. I get this or that compiler or source-code scanner warning when I crank it
    up to maximally-pedantic. Can't you guys write proper code?

    Many years ago, we gave up attempting to avoid warnings on every compiler
    in the universe.  It just got to be a waste of time, and some compilers
    were downright silly as well as contradicted each other.  So now, we simply
    make sure that the code always works.

36. Valgrind (or some similar memory access checker) says that deflate is
    performing a conditional jump that depends on an uninitialized value.
    Isn't that a bug?

    No.  That is intentional for performance reasons, and the output of deflate
    is not affected.  This only started showing up recently since zlib 1.2.x
    uses malloc() by default for allocations, whereas earlier versions used
    calloc(), which zeros out the allocated memory.  Even though the code was
    correct, versions 1.2.4 and later was changed to not stimulate these
    checkers.

37. Will zlib read the (insert any ancient or arcane format here) compressed
    data format?

    Probably not. Look in the comp.compression FAQ for pointers to various
    formats and associated software.

38. How can I encrypt/decrypt zip files with zlib?

    zlib doesn't support encryption.  The original PKZIP encryption is very
    weak and can be broken with freely available programs.  To get strong
    encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib
    compression.  For PKZIP compatible "encryption", look at
    http://www.info-zip.org/

39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?

    "gzip" is the gzip format, and "deflate" is the zlib format.  They should
    probably have called the second one "zlib" instead to avoid confusion with
    the raw deflate compressed data format.  While the HTTP 1.1 RFC 2616
    correctly points to the zlib specification in RFC 1950 for the "deflate"
    transfer encoding, there have been reports of servers and browsers that
    incorrectly produce or expect raw deflate data per the deflate
    specification in RFC 1951, most notably Microsoft.  So even though the
    "deflate" transfer encoding using the zlib format would be the more
    efficient approach (and in fact exactly what the zlib format was designed
    for), using the "gzip" transfer encoding is probably more reliable due to
    an unfortunate choice of name on the part of the HTTP 1.1 authors.

    Bottom line: use the gzip format for HTTP 1.1 encoding.

40. Does zlib support the new "Deflate64" format introduced by PKWare?

    No.  PKWare has apparently decided to keep that format proprietary, since
    they have not documented it as they have previous compression formats.  In
    any case, the compression improvements are so modest compared to other more
    modern approaches, that it's not worth the effort to implement.

41. I'm having a problem with the zip functions in zlib, can you help?

    There are no zip functions in zlib.  You are probably using minizip by
    Giles Vollant, which is found in the contrib directory of zlib.  It is not
    part of zlib.  In fact none of the stuff in contrib is part of zlib.  The
    files in there are not supported by the zlib authors.  You need to contact
    the authors of the respective contribution for help.

42. The match.asm code in contrib is under the GNU General Public License.
    Since it's part of zlib, doesn't that mean that all of zlib falls under the
    GNU GPL?

    No.  The files in contrib are not part of zlib.  They were contributed by
    other authors and are provided as a convenience to the user within the zlib
    distribution.  Each item in contrib has its own license.

43. Is zlib subject to export controls?  What is its ECCN?

    zlib is not subject to export controls, and so is classified as EAR99.

44. Can you please sign these lengthy legal documents and fax them back to us
    so that we can use your software in our product?

    No. Go away. Shoo.
Added compat/zlib/INDEX.




































































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CMakeLists.txt  cmake build file
ChangeLog       history of changes
FAQ             Frequently Asked Questions about zlib
INDEX           this file
Makefile        dummy Makefile that tells you to ./configure
Makefile.in     template for Unix Makefile
README          guess what
configure       configure script for Unix
make_vms.com    makefile for VMS
test/example.c  zlib usages examples for build testing
test/minigzip.c minimal gzip-like functionality for build testing
test/infcover.c inf*.c code coverage for build coverage testing
treebuild.xml   XML description of source file dependencies
zconf.h.cmakein zconf.h template for cmake
zconf.h.in      zconf.h template for configure
zlib.3          Man page for zlib
zlib.3.pdf      Man page in PDF format
zlib.map        Linux symbol information
zlib.pc.in      Template for pkg-config descriptor
zlib.pc.cmakein zlib.pc template for cmake
zlib2ansi       perl script to convert source files for C++ compilation

amiga/          makefiles for Amiga SAS C
as400/          makefiles for AS/400
doc/            documentation for formats and algorithms
msdos/          makefiles for MSDOS
nintendods/     makefile for Nintendo DS
old/            makefiles for various architectures and zlib documentation
                files that have not yet been updated for zlib 1.2.x
qnx/            makefiles for QNX
watcom/         makefiles for OpenWatcom
win32/          makefiles for Windows

                zlib public header files (required for library use):
zconf.h
zlib.h

                private source files used to build the zlib library:
adler32.c
compress.c
crc32.c
crc32.h
deflate.c
deflate.h
gzclose.c
gzguts.h
gzlib.c
gzread.c
gzwrite.c
infback.c
inffast.c
inffast.h
inffixed.h
inflate.c
inflate.h
inftrees.c
inftrees.h
trees.c
trees.h
uncompr.c
zutil.c
zutil.h

                source files for sample programs
See examples/README.examples

                unsupported contributions by third parties
See contrib/README.contrib
Added compat/zlib/LICENSE.






















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Copyright notice:

 (C) 1995-2022 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu
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distclean:
	make -f Makefile.in distclean
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# Makefile for zlib
# Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
# For conditions of distribution and use, see copyright notice in zlib.h

# To compile and test, type:
#    ./configure; make test
# Normally configure builds both a static and a shared library.
# If you want to build just a static library, use: ./configure --static

# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
#    make install
# To install in $HOME instead of /usr/local, use:
#    make install prefix=$HOME

CC=cc

CFLAGS=-O
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-g -DZLIB_DEBUG
#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
#           -Wstrict-prototypes -Wmissing-prototypes

SFLAGS=-O
LDFLAGS=
TEST_LIBS=-L. libz.a
LDSHARED=$(CC)
CPP=$(CC) -E

STATICLIB=libz.a
SHAREDLIB=libz.so
SHAREDLIBV=libz.so.1.3.1
SHAREDLIBM=libz.so.1
LIBS=$(STATICLIB) $(SHAREDLIBV)

AR=ar
ARFLAGS=rc
RANLIB=ranlib
LDCONFIG=ldconfig
LDSHAREDLIBC=-lc
TAR=tar
SHELL=/bin/sh
EXE=

prefix = /usr/local
exec_prefix = ${prefix}
libdir = ${exec_prefix}/lib
sharedlibdir = ${libdir}
includedir = ${prefix}/include
mandir = ${prefix}/share/man
man3dir = ${mandir}/man3
pkgconfigdir = ${libdir}/pkgconfig
SRCDIR=
ZINC=
ZINCOUT=-I.

OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o
OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o
OBJC = $(OBJZ) $(OBJG)

PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo
PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo
PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG)

# to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo
OBJA =
PIC_OBJA =

OBJS = $(OBJC) $(OBJA)

PIC_OBJS = $(PIC_OBJC) $(PIC_OBJA)

all: static shared

static: example$(EXE) minigzip$(EXE)

shared: examplesh$(EXE) minigzipsh$(EXE)

all64: example64$(EXE) minigzip64$(EXE)

check: test

test: all teststatic testshared

teststatic: static
	@TMPST=tmpst_$$; \
	if echo hello world | ${QEMU_RUN} ./minigzip | ${QEMU_RUN} ./minigzip -d && ${QEMU_RUN} ./example $$TMPST ; then \
	  echo '		*** zlib test OK ***'; \
	else \
	  echo '		*** zlib test FAILED ***'; false; \
	fi
	@rm -f tmpst_$$

testshared: shared
	@LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
	LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \
	DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
	SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
	TMPSH=tmpsh_$$; \
	if echo hello world | ${QEMU_RUN} ./minigzipsh | ${QEMU_RUN} ./minigzipsh -d && ${QEMU_RUN} ./examplesh $$TMPSH; then \
	  echo '		*** zlib shared test OK ***'; \
	else \
	  echo '		*** zlib shared test FAILED ***'; false; \
	fi
	@rm -f tmpsh_$$

test64: all64
	@TMP64=tmp64_$$; \
	if echo hello world | ${QEMU_RUN} ./minigzip64 | ${QEMU_RUN} ./minigzip64 -d && ${QEMU_RUN} ./example64 $$TMP64; then \
	  echo '		*** zlib 64-bit test OK ***'; \
	else \
	  echo '		*** zlib 64-bit test FAILED ***'; false; \
	fi
	@rm -f tmp64_$$

infcover.o: $(SRCDIR)test/infcover.c $(SRCDIR)zlib.h zconf.h
	$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/infcover.c

infcover: infcover.o libz.a
	$(CC) $(CFLAGS) -o $@ infcover.o libz.a

cover: infcover
	rm -f *.gcda
	${QEMU_RUN} ./infcover
	gcov inf*.c

libz.a: $(OBJS)
	$(AR) $(ARFLAGS) $@ $(OBJS)
	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1

match.o: match.S
	$(CPP) match.S > _match.s
	$(CC) -c _match.s
	mv _match.o match.o
	rm -f _match.s

match.lo: match.S
	$(CPP) match.S > _match.s
	$(CC) -c -fPIC _match.s
	mv _match.o match.lo
	rm -f _match.s

example.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h
	$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/example.c

minigzip.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h
	$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/minigzip.c

example64.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h
	$(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/example.c

minigzip64.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h
	$(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/minigzip.c


adler32.o: $(SRCDIR)adler32.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)adler32.c

crc32.o: $(SRCDIR)crc32.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)crc32.c

deflate.o: $(SRCDIR)deflate.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)deflate.c

infback.o: $(SRCDIR)infback.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)infback.c

inffast.o: $(SRCDIR)inffast.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inffast.c

inflate.o: $(SRCDIR)inflate.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inflate.c

inftrees.o: $(SRCDIR)inftrees.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inftrees.c

trees.o: $(SRCDIR)trees.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)trees.c

zutil.o: $(SRCDIR)zutil.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)zutil.c

compress.o: $(SRCDIR)compress.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)compress.c

uncompr.o: $(SRCDIR)uncompr.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)uncompr.c

gzclose.o: $(SRCDIR)gzclose.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzclose.c

gzlib.o: $(SRCDIR)gzlib.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzlib.c

gzread.o: $(SRCDIR)gzread.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzread.c

gzwrite.o: $(SRCDIR)gzwrite.c
	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzwrite.c


adler32.lo: $(SRCDIR)adler32.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/adler32.o $(SRCDIR)adler32.c
	-@mv objs/adler32.o $@

crc32.lo: $(SRCDIR)crc32.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/crc32.o $(SRCDIR)crc32.c
	-@mv objs/crc32.o $@

deflate.lo: $(SRCDIR)deflate.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/deflate.o $(SRCDIR)deflate.c
	-@mv objs/deflate.o $@

infback.lo: $(SRCDIR)infback.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/infback.o $(SRCDIR)infback.c
	-@mv objs/infback.o $@

inffast.lo: $(SRCDIR)inffast.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/inffast.o $(SRCDIR)inffast.c
	-@mv objs/inffast.o $@

inflate.lo: $(SRCDIR)inflate.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/inflate.o $(SRCDIR)inflate.c
	-@mv objs/inflate.o $@

inftrees.lo: $(SRCDIR)inftrees.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/inftrees.o $(SRCDIR)inftrees.c
	-@mv objs/inftrees.o $@

trees.lo: $(SRCDIR)trees.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/trees.o $(SRCDIR)trees.c
	-@mv objs/trees.o $@

zutil.lo: $(SRCDIR)zutil.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/zutil.o $(SRCDIR)zutil.c
	-@mv objs/zutil.o $@

compress.lo: $(SRCDIR)compress.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/compress.o $(SRCDIR)compress.c
	-@mv objs/compress.o $@

uncompr.lo: $(SRCDIR)uncompr.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/uncompr.o $(SRCDIR)uncompr.c
	-@mv objs/uncompr.o $@

gzclose.lo: $(SRCDIR)gzclose.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/gzclose.o $(SRCDIR)gzclose.c
	-@mv objs/gzclose.o $@

gzlib.lo: $(SRCDIR)gzlib.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/gzlib.o $(SRCDIR)gzlib.c
	-@mv objs/gzlib.o $@

gzread.lo: $(SRCDIR)gzread.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/gzread.o $(SRCDIR)gzread.c
	-@mv objs/gzread.o $@

gzwrite.lo: $(SRCDIR)gzwrite.c
	-@mkdir objs 2>/dev/null || test -d objs
	$(CC) $(SFLAGS) $(ZINC) -fPIC -c -o objs/gzwrite.o $(SRCDIR)gzwrite.c
	-@mv objs/gzwrite.o $@


placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a
	$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
	rm -f $(SHAREDLIB) $(SHAREDLIBM)
	ln -s $@ $(SHAREDLIB)
	ln -s $@ $(SHAREDLIBM)
	-@rmdir objs

example$(EXE): example.o $(STATICLIB)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ example.o $(TEST_LIBS)

minigzip$(EXE): minigzip.o $(STATICLIB)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ minigzip.o $(TEST_LIBS)

examplesh$(EXE): example.o $(SHAREDLIBV)
	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS) -L. $(SHAREDLIBV)

minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS) -L. $(SHAREDLIBV)

example64$(EXE): example64.o $(STATICLIB)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ example64.o $(TEST_LIBS)

minigzip64$(EXE): minigzip64.o $(STATICLIB)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ minigzip64.o $(TEST_LIBS)

install-libs: $(LIBS)
	-@if [ ! -d $(DESTDIR)$(exec_prefix)  ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi
	-@if [ ! -d $(DESTDIR)$(libdir)       ]; then mkdir -p $(DESTDIR)$(libdir); fi
	-@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi
	-@if [ ! -d $(DESTDIR)$(man3dir)      ]; then mkdir -p $(DESTDIR)$(man3dir); fi
	-@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi
	rm -f $(DESTDIR)$(libdir)/$(STATICLIB)
	cp $(STATICLIB) $(DESTDIR)$(libdir)
	chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB)
	-@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1
	-@if test -n "$(SHAREDLIBV)"; then \
	  rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
	  cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \
	  echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \
	  chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
	  echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \
	  rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
	  ($(LDCONFIG) || true)  >/dev/null 2>&1; \
	fi
	rm -f $(DESTDIR)$(man3dir)/zlib.3
	cp $(SRCDIR)zlib.3 $(DESTDIR)$(man3dir)
	chmod 644 $(DESTDIR)$(man3dir)/zlib.3
	rm -f $(DESTDIR)$(pkgconfigdir)/zlib.pc
	cp zlib.pc $(DESTDIR)$(pkgconfigdir)
	chmod 644 $(DESTDIR)$(pkgconfigdir)/zlib.pc
# The ranlib in install is needed on NeXTSTEP which checks file times
# ldconfig is for Linux

install: install-libs
	-@if [ ! -d $(DESTDIR)$(includedir)   ]; then mkdir -p $(DESTDIR)$(includedir); fi
	rm -f $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
	cp $(SRCDIR)zlib.h zconf.h $(DESTDIR)$(includedir)
	chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h

uninstall:
	cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h
	cd $(DESTDIR)$(libdir) && rm -f libz.a; \
	if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
	  rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
	fi
	cd $(DESTDIR)$(man3dir) && rm -f zlib.3
	cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc

docs: zlib.3.pdf

zlib.3.pdf: $(SRCDIR)zlib.3
	groff -mandoc -f H -T ps $(SRCDIR)zlib.3 | ps2pdf - $@

zconf.h.cmakein: $(SRCDIR)zconf.h.in
	-@ TEMPFILE=zconfh_$$; \
	echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\
	sed -f $$TEMPFILE $(SRCDIR)zconf.h.in > $@ &&\
	touch -r $(SRCDIR)zconf.h.in $@ &&\
	rm $$TEMPFILE

zconf: $(SRCDIR)zconf.h.in
	cp -p $(SRCDIR)zconf.h.in zconf.h

minizip-test: static
	cd contrib/minizip && { CC="$(CC)" CFLAGS="$(CFLAGS)" $(MAKE) test ; cd ../.. ; }

minizip-clean:
	cd contrib/minizip && { $(MAKE) clean ; cd ../.. ; }

mostlyclean: clean
clean: minizip-clean
	rm -f *.o *.lo *~ \
	   example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \
	   example64$(EXE) minigzip64$(EXE) \
	   infcover \
	   libz.* foo.gz so_locations \
	   _match.s maketree contrib/infback9/*.o
	rm -rf objs
	rm -f *.gcda *.gcno *.gcov
	rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov

maintainer-clean: distclean
distclean: clean zconf zconf.h.cmakein
	rm -f Makefile zlib.pc configure.log
	-@rm -f .DS_Store
	@if [ -f Makefile.in ]; then \
	printf 'all:\n\t-@echo "Please use ./configure first.  Thank you."\n' > Makefile ; \
	printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile ; \
	touch -r $(SRCDIR)Makefile.in Makefile ; fi

tags:
	etags $(SRCDIR)*.[ch]

adler32.o zutil.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
gzclose.o gzlib.o gzread.o gzwrite.o: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
compress.o example.o minigzip.o uncompr.o: $(SRCDIR)zlib.h zconf.h
crc32.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h
deflate.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
infback.o inflate.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h
inffast.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h
inftrees.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h
trees.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h

adler32.lo zutil.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
gzclose.lo gzlib.lo gzread.lo gzwrite.lo: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
compress.lo example.lo minigzip.lo uncompr.lo: $(SRCDIR)zlib.h zconf.h
crc32.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h
deflate.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
infback.lo inflate.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h
inffast.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h
inftrees.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h
trees.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h
Added compat/zlib/README.





















































































































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ZLIB DATA COMPRESSION LIBRARY

zlib 1.3.1 is a general purpose data compression library.  All the code is
thread safe.  The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
rfc1952 (gzip format).

All functions of the compression library are documented in the file zlib.h
(volunteer to write man pages welcome, contact zlib@gzip.org).  A usage example
of the library is given in the file test/example.c which also tests that
the library is working correctly.  Another example is given in the file
test/minigzip.c.  The compression library itself is composed of all source
files in the root directory.

To compile all files and run the test program, follow the instructions given at
the top of Makefile.in.  In short "./configure; make test", and if that goes
well, "make install" should work for most flavors of Unix.  For Windows, use
one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
make_vms.com.

Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
<info@winimage.com> for the Windows DLL version.  The zlib home page is
http://zlib.net/ .  Before reporting a problem, please check this site to
verify that you have the latest version of zlib; otherwise get the latest
version and check whether the problem still exists or not.

PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.

Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
issue of Dr.  Dobb's Journal; a copy of the article is available at
https://marknelson.us/posts/1997/01/01/zlib-engine.html .

The changes made in version 1.3.1 are documented in the file ChangeLog.

Unsupported third party contributions are provided in directory contrib/ .

zlib is available in Java using the java.util.zip package. Follow the API
Documentation link at: https://docs.oracle.com/search/?q=java.util.zip .

A Perl interface to zlib and bzip2 written by Paul Marquess <pmqs@cpan.org>
can be found at https://github.com/pmqs/IO-Compress .

A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
available in Python 1.5 and later versions, see
http://docs.python.org/library/zlib.html .

zlib is built into tcl: http://wiki.tcl.tk/4610 .

An experimental package to read and write files in .zip format, written on top
of zlib by Gilles Vollant <info@winimage.com>, is available in the
contrib/minizip directory of zlib.


Notes for some targets:

- For Windows DLL versions, please see win32/DLL_FAQ.txt

- For 64-bit Irix, deflate.c must be compiled without any optimization. With
  -O, one libpng test fails. The test works in 32 bit mode (with the -n32
  compiler flag). The compiler bug has been reported to SGI.

- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
  when compiled with cc.

- On Digital Unix 4.0D (formerly OSF/1) on AlphaServer, the cc option -std1 is
  necessary to get gzprintf working correctly. This is done by configure.

- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
  other compilers. Use "make test" to check your compiler.

- gzdopen is not supported on RISCOS or BEOS.

- For PalmOs, see http://palmzlib.sourceforge.net/


Acknowledgments:

  The deflate format used by zlib was defined by Phil Katz.  The deflate and
  zlib specifications were written by L.  Peter Deutsch.  Thanks to all the
  people who reported problems and suggested various improvements in zlib; they
  are too numerous to cite here.

Copyright notice:

 (C) 1995-2024 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu

If you use the zlib library in a product, we would appreciate *not* receiving
lengthy legal documents to sign.  The sources are provided for free but without
warranty of any kind.  The library has been entirely written by Jean-loup
Gailly and Mark Adler; it does not include third-party code.  We make all
contributions to and distributions of this project solely in our personal
capacity, and are not conveying any rights to any intellectual property of
any third parties.

If you redistribute modified sources, we would appreciate that you include in
the file ChangeLog history information documenting your changes.  Please read
the FAQ for more information on the distribution of modified source versions.
Added compat/zlib/adler32.c.




































































































































































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/* adler32.c -- compute the Adler-32 checksum of a data stream
 * Copyright (C) 1995-2011, 2016 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#include "zutil.h"

#define BASE 65521U     /* largest prime smaller than 65536 */
#define NMAX 5552
/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */

#define DO1(buf,i)  {adler += (buf)[i]; sum2 += adler;}
#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
#define DO16(buf)   DO8(buf,0); DO8(buf,8);

/* use NO_DIVIDE if your processor does not do division in hardware --
   try it both ways to see which is faster */
#ifdef NO_DIVIDE
/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
   (thank you to John Reiser for pointing this out) */
#  define CHOP(a) \
    do { \
        unsigned long tmp = a >> 16; \
        a &= 0xffffUL; \
        a += (tmp << 4) - tmp; \
    } while (0)
#  define MOD28(a) \
    do { \
        CHOP(a); \
        if (a >= BASE) a -= BASE; \
    } while (0)
#  define MOD(a) \
    do { \
        CHOP(a); \
        MOD28(a); \
    } while (0)
#  define MOD63(a) \
    do { /* this assumes a is not negative */ \
        z_off64_t tmp = a >> 32; \
        a &= 0xffffffffL; \
        a += (tmp << 8) - (tmp << 5) + tmp; \
        tmp = a >> 16; \
        a &= 0xffffL; \
        a += (tmp << 4) - tmp; \
        tmp = a >> 16; \
        a &= 0xffffL; \
        a += (tmp << 4) - tmp; \
        if (a >= BASE) a -= BASE; \
    } while (0)
#else
#  define MOD(a) a %= BASE
#  define MOD28(a) a %= BASE
#  define MOD63(a) a %= BASE
#endif

/* ========================================================================= */
uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) {
    unsigned long sum2;
    unsigned n;

    /* split Adler-32 into component sums */
    sum2 = (adler >> 16) & 0xffff;
    adler &= 0xffff;

    /* in case user likes doing a byte at a time, keep it fast */
    if (len == 1) {
        adler += buf[0];
        if (adler >= BASE)
            adler -= BASE;
        sum2 += adler;
        if (sum2 >= BASE)
            sum2 -= BASE;
        return adler | (sum2 << 16);
    }

    /* initial Adler-32 value (deferred check for len == 1 speed) */
    if (buf == Z_NULL)
        return 1L;

    /* in case short lengths are provided, keep it somewhat fast */
    if (len < 16) {
        while (len--) {
            adler += *buf++;
            sum2 += adler;
        }
        if (adler >= BASE)
            adler -= BASE;
        MOD28(sum2);            /* only added so many BASE's */
        return adler | (sum2 << 16);
    }

    /* do length NMAX blocks -- requires just one modulo operation */
    while (len >= NMAX) {
        len -= NMAX;
        n = NMAX / 16;          /* NMAX is divisible by 16 */
        do {
            DO16(buf);          /* 16 sums unrolled */
            buf += 16;
        } while (--n);
        MOD(adler);
        MOD(sum2);
    }

    /* do remaining bytes (less than NMAX, still just one modulo) */
    if (len) {                  /* avoid modulos if none remaining */
        while (len >= 16) {
            len -= 16;
            DO16(buf);
            buf += 16;
        }
        while (len--) {
            adler += *buf++;
            sum2 += adler;
        }
        MOD(adler);
        MOD(sum2);
    }

    /* return recombined sums */
    return adler | (sum2 << 16);
}

/* ========================================================================= */
uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len) {
    return adler32_z(adler, buf, len);
}

/* ========================================================================= */
local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2) {
    unsigned long sum1;
    unsigned long sum2;
    unsigned rem;

    /* for negative len, return invalid adler32 as a clue for debugging */
    if (len2 < 0)
        return 0xffffffffUL;

    /* the derivation of this formula is left as an exercise for the reader */
    MOD63(len2);                /* assumes len2 >= 0 */
    rem = (unsigned)len2;
    sum1 = adler1 & 0xffff;
    sum2 = rem * sum1;
    MOD(sum2);
    sum1 += (adler2 & 0xffff) + BASE - 1;
    sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
    if (sum1 >= BASE) sum1 -= BASE;
    if (sum1 >= BASE) sum1 -= BASE;
    if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
    if (sum2 >= BASE) sum2 -= BASE;
    return sum1 | (sum2 << 16);
}

/* ========================================================================= */
uLong ZEXPORT adler32_combine(uLong adler1, uLong adler2, z_off_t len2) {
    return adler32_combine_(adler1, adler2, len2);
}

uLong ZEXPORT adler32_combine64(uLong adler1, uLong adler2, z_off64_t len2) {
    return adler32_combine_(adler1, adler2, len2);
}
Added compat/zlib/amiga/Makefile.pup.





































































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# Amiga powerUP (TM) Makefile
# makefile for libpng and SAS C V6.58/7.00 PPC compiler
# Copyright (C) 1998 by Andreas R. Kleinert

LIBNAME	= libzip.a

CC	= scppc
CFLAGS	= NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
	  OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
AR	= ppc-amigaos-ar cr
RANLIB	= ppc-amigaos-ranlib
LD	= ppc-amigaos-ld -r
LDFLAGS	= -o
LDLIBS	= LIB:scppc.a LIB:end.o
RM	= delete quiet

OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
       uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o

TEST_OBJS = example.o minigzip.o

all: example minigzip

check: test
test: all
	example
	echo hello world | minigzip | minigzip -d

$(LIBNAME): $(OBJS)
	$(AR) $@ $(OBJS)
	-$(RANLIB) $@

example: example.o $(LIBNAME)
	$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)

minigzip: minigzip.o $(LIBNAME)
	$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)

mostlyclean: clean
clean:
	$(RM) *.o example minigzip $(LIBNAME) foo.gz

zip:
	zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
	  descrip.mms *.[ch]

tgz:
	cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
	  zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]

# DO NOT DELETE THIS LINE -- make depend depends on it.

adler32.o: zlib.h zconf.h
compress.o: zlib.h zconf.h
crc32.o: crc32.h zlib.h zconf.h
deflate.o: deflate.h zutil.h zlib.h zconf.h
example.o: zlib.h zconf.h
gzclose.o: zlib.h zconf.h gzguts.h
gzlib.o: zlib.h zconf.h gzguts.h
gzread.o: zlib.h zconf.h gzguts.h
gzwrite.o: zlib.h zconf.h gzguts.h
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
minigzip.o: zlib.h zconf.h
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
uncompr.o: zlib.h zconf.h
zutil.o: zutil.h zlib.h zconf.h
Added compat/zlib/amiga/Makefile.sas.




































































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# SMakefile for zlib
# Modified from the standard UNIX Makefile Copyright Jean-loup Gailly
# Osma Ahvenlampi <Osma.Ahvenlampi@hut.fi>
# Amiga, SAS/C 6.56 & Smake

CC=sc
CFLAGS=OPT
#CFLAGS=OPT CPU=68030
#CFLAGS=DEBUG=LINE
LDFLAGS=LIB z.lib

SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
       NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
       DEF=POSTINC

OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
       uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o

TEST_OBJS = example.o minigzip.o

all: SCOPTIONS example minigzip

check: test
test: all
	example
	echo hello world | minigzip | minigzip -d

install: z.lib
	copy clone zlib.h zconf.h INCLUDE:
	copy clone z.lib LIB:

z.lib: $(OBJS)
	oml z.lib r $(OBJS)

example: example.o z.lib
	$(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS)

minigzip: minigzip.o z.lib
	$(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)

mostlyclean: clean
clean:
	-delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS

SCOPTIONS: Makefile.sas
	copy to $@ <from <
$(SCOPTIONS)
<

# DO NOT DELETE THIS LINE -- make depend depends on it.

adler32.o: zlib.h zconf.h
compress.o: zlib.h zconf.h
crc32.o: crc32.h zlib.h zconf.h
deflate.o: deflate.h zutil.h zlib.h zconf.h
example.o: zlib.h zconf.h
gzclose.o: zlib.h zconf.h gzguts.h
gzlib.o: zlib.h zconf.h gzguts.h
gzread.o: zlib.h zconf.h gzguts.h
gzwrite.o: zlib.h zconf.h gzguts.h
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
minigzip.o: zlib.h zconf.h
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
uncompr.o: zlib.h zconf.h
zutil.o: zutil.h zlib.h zconf.h
Added compat/zlib/compress.c.











































































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/* compress.c -- compress a memory buffer
 * Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#define ZLIB_INTERNAL
#include "zlib.h"

/* ===========================================================================
     Compresses the source buffer into the destination buffer. The level
   parameter has the same meaning as in deflateInit.  sourceLen is the byte
   length of the source buffer. Upon entry, destLen is the total size of the
   destination buffer, which must be at least 0.1% larger than sourceLen plus
   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.

     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
   Z_STREAM_ERROR if the level parameter is invalid.
*/
int ZEXPORT compress2(Bytef *dest, uLongf *destLen, const Bytef *source,
                      uLong sourceLen, int level) {
    z_stream stream;
    int err;
    const uInt max = (uInt)-1;
    uLong left;

    left = *destLen;
    *destLen = 0;

    stream.zalloc = (alloc_func)0;
    stream.zfree = (free_func)0;
    stream.opaque = (voidpf)0;

    err = deflateInit(&stream, level);
    if (err != Z_OK) return err;

    stream.next_out = dest;
    stream.avail_out = 0;
    stream.next_in = (z_const Bytef *)source;
    stream.avail_in = 0;

    do {
        if (stream.avail_out == 0) {
            stream.avail_out = left > (uLong)max ? max : (uInt)left;
            left -= stream.avail_out;
        }
        if (stream.avail_in == 0) {
            stream.avail_in = sourceLen > (uLong)max ? max : (uInt)sourceLen;
            sourceLen -= stream.avail_in;
        }
        err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH);
    } while (err == Z_OK);

    *destLen = stream.total_out;
    deflateEnd(&stream);
    return err == Z_STREAM_END ? Z_OK : err;
}

/* ===========================================================================
 */
int ZEXPORT compress(Bytef *dest, uLongf *destLen, const Bytef *source,
                     uLong sourceLen) {
    return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}

/* ===========================================================================
     If the default memLevel or windowBits for deflateInit() is changed, then
   this function needs to be updated.
 */
uLong ZEXPORT compressBound(uLong sourceLen) {
    return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
           (sourceLen >> 25) + 13;
}
Added compat/zlib/configure.

































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#!/bin/sh
# configure script for zlib.
#
# Normally configure builds both a static and a shared library.
# If you want to build just a static library, use: ./configure --static
#
# To impose specific compiler or flags or install directory, use for example:
#    prefix=$HOME CC=cc CFLAGS="-O4" ./configure
# or for csh/tcsh users:
#    (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)

# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
# If you have problems, try without defining CC and CFLAGS before reporting
# an error.

# start off configure.log
echo -------------------- >> configure.log
echo $0 $* >> configure.log
date >> configure.log

# get source directory
SRCDIR=`dirname $0`
if test $SRCDIR = "."; then
    ZINC=""
    ZINCOUT="-I."
    SRCDIR=""
else
    ZINC='-I. -include zconf.h'
    ZINCOUT='-I. -I$(SRCDIR)'
    SRCDIR="$SRCDIR/"
fi

# set command prefix for cross-compilation
if [ -n "${CHOST}" ]; then
    uname=${CHOST}
    mname=${CHOST}
    CROSS_PREFIX="${CHOST}-"
else
    mname=`(uname -a || echo unknown) 2>/dev/null`
fi

# destination name for static library
STATICLIB=libz.a

# extract zlib version numbers from zlib.h
VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h`
VER3=`echo ${VER}|sed -n -e 's/\([0-9]\{1,\}\(\\.[0-9]\{1,\}\)\{1,2\}\).*/\1/p'`
VER1=`echo ${VER}|sed -n -e 's/\([0-9]\{1,\}\)\\..*/\1/p'`

# establish commands for library building
if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
    AR=${AR-"${CROSS_PREFIX}ar"}
    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
else
    AR=${AR-"ar"}
    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
fi
ARFLAGS=${ARFLAGS-"rc"}
if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
    RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
    test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
else
    RANLIB=${RANLIB-"ranlib"}
fi
if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
    NM=${NM-"${CROSS_PREFIX}nm"}
    test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
else
    NM=${NM-"nm"}
fi

# set defaults before processing command line options
LDCONFIG=${LDCONFIG-"ldconfig"}
LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
ARCHS=
prefix=${prefix-/usr/local}
exec_prefix=${exec_prefix-'${prefix}'}
libdir=${libdir-'${exec_prefix}/lib'}
sharedlibdir=${sharedlibdir-'${libdir}'}
includedir=${includedir-'${prefix}/include'}
mandir=${mandir-'${prefix}/share/man'}
shared_ext='.so'
shared=1
solo=0
cover=0
zprefix=0
zconst=0
build64=0
gcc=0
warn=0
debug=0
address=0
memory=0
old_cc="$CC"
old_cflags="$CFLAGS"
OBJC='$(OBJZ) $(OBJG)'
PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'

# leave this script, optionally in a bad way
leave()
{
  if test "$*" != "0"; then
    echo "** $0 aborting." | tee -a configure.log
  fi
  rm -rf $test.[co] $test $test$shared_ext $test.gcno $test.dSYM ./--version
  echo -------------------- >> configure.log
  echo >> configure.log
  echo >> configure.log
  exit $1
}

# process command line options
while test $# -ge 1
do
case "$1" in
    -h* | --help)
      echo 'usage:' | tee -a configure.log
      echo '  configure [--const] [--zprefix] [--prefix=PREFIX]  [--eprefix=EXPREFIX]' | tee -a configure.log
      echo '    [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
      echo '    [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
        exit 0 ;;
    -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
    -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
    -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
    --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
    -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
    -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
    -p* | --prefix) prefix="$2"; shift; shift ;;
    -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
    -l* | --libdir) libdir="$2"; shift; shift ;;
    -i* | --includedir) includedir="$2"; shift; shift ;;
    -s* | --shared | --enable-shared) shared=1; shift ;;
    -t | --static) shared=0; shift ;;
    --solo) solo=1; shift ;;
    --cover) cover=1; shift ;;
    -z* | --zprefix) zprefix=1; shift ;;
    -6* | --64) build64=1; shift ;;
    -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
    --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
    --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
    -c* | --const) zconst=1; shift ;;
    -w* | --warn) warn=1; shift ;;
    -d* | --debug) debug=1; shift ;;
    --sanitize) address=1; shift ;;
    --address) address=1; shift ;;
    --memory) memory=1; shift ;;
    *)
      echo "unknown option: $1" | tee -a configure.log
      echo "$0 --help for help" | tee -a configure.log
      leave 1;;
    esac
done

# temporary file name
test=ztest$$

# put arguments in log, also put test file in log if used in arguments
show()
{
  case "$*" in
    *$test.c*)
      echo === $test.c === >> configure.log
      cat $test.c >> configure.log
      echo === >> configure.log;;
  esac
  echo $* >> configure.log
}

# check for gcc vs. cc and set compile and link flags based on the system identified by uname
cat > $test.c <<EOF
extern int getchar();
int hello() {return getchar();}
EOF

if test -z "$CC"; then
  echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
  if ${CROSS_PREFIX}gcc -v >/dev/null 2>&1; then
    cc=${CROSS_PREFIX}gcc
  else
    cc=${CROSS_PREFIX}cc
  fi
else
  cc=${CC}
fi

case "$cc" in
  *gcc*) gcc=1 ;;
  *clang*) gcc=1 ;;
esac
case `$cc -v 2>&1` in
  *gcc*) gcc=1 ;;
  *clang*) gcc=1 ;;
esac

show $cc -c $test.c
if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
  echo ... using gcc >> configure.log
  CC="$cc"
  CFLAGS="${CFLAGS--O3}"
  SFLAGS="${CFLAGS--O3} -fPIC"
  if test "$ARCHS"; then
    CFLAGS="${CFLAGS} ${ARCHS}"
    LDFLAGS="${LDFLAGS} ${ARCHS}"
  fi
  if test $build64 -eq 1; then
    CFLAGS="${CFLAGS} -m64"
    SFLAGS="${SFLAGS} -m64"
  fi
  if test "$warn" -eq 1; then
    if test "$zconst" -eq 1; then
      CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -DZLIB_CONST"
    else
      CFLAGS="${CFLAGS} -Wall -Wextra"
    fi
  fi
  if test $address -eq 1; then
    CFLAGS="${CFLAGS} -g -fsanitize=address -fno-omit-frame-pointer"
  fi
  if test $memory -eq 1; then
    CFLAGS="${CFLAGS} -g -fsanitize=memory -fno-omit-frame-pointer"
  fi
  if test $debug -eq 1; then
    CFLAGS="${CFLAGS} -DZLIB_DEBUG"
    SFLAGS="${SFLAGS} -DZLIB_DEBUG"
  fi
  if test -z "$uname"; then
    uname=`(uname -s || echo unknown) 2>/dev/null`
  fi
  case "$uname" in
  Linux* | linux* | *-linux* | GNU | GNU/* | solaris*)
        case "$mname" in
        *sparc*)
            LDFLAGS="${LDFLAGS} -Wl,--no-warn-rwx-segments" ;;
        esac
        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
  *BSD | *bsd* | DragonFly)
        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
        LDCONFIG="ldconfig -m" ;;
  CYGWIN* | Cygwin* | cygwin* | *-cygwin* | OS/2*)
        EXE='.exe' ;;
  MINGW* | mingw* | *-mingw*)
        rm -f $test.[co] $test $test$shared_ext
        echo "If this doesn't work for you, try win32/Makefile.gcc." | tee -a configure.log
        LDSHARED=${LDSHARED-"$cc -shared"}
        LDSHAREDLIBC=""
        EXE='.exe' ;;
  QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
        # (alain.bonnefoy@icbt.com)
        LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
  HP-UX*)
        LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
        case `(uname -m || echo unknown) 2>/dev/null` in
        ia64)
            shared_ext='.so'
            SHAREDLIB='libz.so' ;;
        *)
            shared_ext='.sl'
            SHAREDLIB='libz.sl' ;;
        esac ;;
  AIX*)
        LDFLAGS="${LDFLAGS} -Wl,-brtl" ;;
  Darwin* | darwin* | *-darwin*)
        shared_ext='.dylib'
        SHAREDLIB=libz$shared_ext
        SHAREDLIBV=libz.$VER$shared_ext
        SHAREDLIBM=libz.$VER1$shared_ext
        LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
        if "${CROSS_PREFIX}libtool" -V 2>&1 | grep Apple > /dev/null; then
            AR="${CROSS_PREFIX}libtool"
        elif libtool -V 2>&1 | grep Apple > /dev/null; then
            AR="libtool"
        else
            AR="/usr/bin/libtool"
        fi
        ARFLAGS="-o" ;;
  *)
        LDSHARED=${LDSHARED-"$cc -shared"} ;;
  esac
else
  # find system name and corresponding cc options
  CC=${CC-cc}
  gcc=0
  echo ... using $CC >> configure.log
  if test -z "$uname"; then
    uname=`(uname -sr || echo unknown) 2>/dev/null`
  fi
  case "$uname" in
  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
             CFLAGS=${CFLAGS-"-O"}
#            LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
             LDSHARED=${LDSHARED-"ld -b"}
         case `(uname -m || echo unknown) 2>/dev/null` in
         ia64)
             shared_ext='.so'
             SHAREDLIB='libz.so' ;;
         *)
             shared_ext='.sl'
             SHAREDLIB='libz.sl' ;;
         esac ;;
  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
             CFLAGS=${CFLAGS-"-ansi -O2"}
             LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
             CFLAGS=${CFLAGS-"-O -std1"}
             LDFLAGS="${LDFLAGS} -Wl,-rpath,."
             LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
             CFLAGS=${CFLAGS-"-O -std1"}
             LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
             CFLAGS=${CFLAGS-"-4 -O"}
             LDSHARED=${LDSHARED-"cc"}
             RANLIB=${RANLIB-"true"}
             AR="cc"
             ARFLAGS="-A" ;;
  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
             CFLAGS=${CFLAGS-"-O3"}
             LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
  SunOS\ 5* | solaris*)
         LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
         SFLAGS=${CFLAGS-"-fast -KPIC"}
         CFLAGS=${CFLAGS-"-fast"}
         if test $build64 -eq 1; then
             # old versions of SunPRO/Workshop/Studio don't support -m64,
             # but newer ones do.  Check for it.
             flag64=`$CC -flags | egrep -- '^-m64'`
             if test x"$flag64" != x"" ; then
                 CFLAGS="${CFLAGS} -m64"
                 SFLAGS="${SFLAGS} -m64"
             else
                 case `(uname -m || echo unknown) 2>/dev/null` in
                   i86*)
                     SFLAGS="$SFLAGS -xarch=amd64"
                     CFLAGS="$CFLAGS -xarch=amd64" ;;
                   *)
                     SFLAGS="$SFLAGS -xarch=v9"
                     CFLAGS="$CFLAGS -xarch=v9" ;;
                 esac
             fi
         fi
         if test -n "$ZINC"; then
             ZINC='-I- -I. -I$(SRCDIR)'
         fi
         ;;
  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
             CFLAGS=${CFLAGS-"-O2"}
             LDSHARED=${LDSHARED-"ld"} ;;
  SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
             CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
             LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
  UNIX_System_V\ 4.2.0)
             SFLAGS=${CFLAGS-"-KPIC -O"}
             CFLAGS=${CFLAGS-"-O"}
             LDSHARED=${LDSHARED-"cc -G"} ;;
  UNIX_SV\ 4.2MP)
             SFLAGS=${CFLAGS-"-Kconform_pic -O"}
             CFLAGS=${CFLAGS-"-O"}
             LDSHARED=${LDSHARED-"cc -G"} ;;
  OpenUNIX\ 5)
             SFLAGS=${CFLAGS-"-KPIC -O"}
             CFLAGS=${CFLAGS-"-O"}
             LDSHARED=${LDSHARED-"cc -G"} ;;
  AIX*)  # Courtesy of dbakker@arrayasolutions.com
             SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
             CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
             LDSHARED=${LDSHARED-"xlc -G"} ;;
  # send working options for other systems to zlib@gzip.org
  *)         SFLAGS=${CFLAGS-"-O"}
             CFLAGS=${CFLAGS-"-O"}
             LDSHARED=${LDSHARED-"cc -shared"} ;;
  esac
fi

# destination names for shared library if not defined above
SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}

echo >> configure.log

# define functions for testing compiler and library characteristics and logging the results

cat > $test.c <<EOF
#error error
EOF
if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
  try()
  {
    show $*
    test "`( $* ) 2>&1 | tee -a configure.log`" = ""
  }
  echo - using any output from compiler to indicate an error >> configure.log
else
  try()
  {
    show $*
    got=`( $* ) 2>&1`
    ret=$?
    if test "$got" != ""; then
      printf "%s\n" "$got" >> configure.log
    fi
    if test $ret -ne 0; then
      echo "(exit code "$ret")" >> configure.log
    fi
    return $ret
  }
fi

tryboth()
{
  show $*
  got=`( $* ) 2>&1`
  ret=$?
  if test "$got" != ""; then
    printf "%s\n" "$got" >> configure.log
  fi
  if test $ret -ne 0; then
    echo "(exit code "$ret")" >> configure.log
    return $ret
  fi
  test "$got" = ""
}

cat > $test.c << EOF
int foo() { return 0; }
EOF
echo "Checking for obsessive-compulsive compiler options..." >> configure.log
if try $CC -c $CFLAGS $test.c; then
  :
else
  echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
  leave 1
fi

echo >> configure.log

# see if shared library build supported
cat > $test.c <<EOF
extern int getchar();
int hello() {return getchar();}
EOF
if test $shared -eq 1; then
  echo Checking for shared library support... | tee -a configure.log
  # we must test in two steps (cc then ld), required at least on SunOS 4.x
  if try $CC -c $SFLAGS $test.c &&
     try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
    echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
  elif test -z "$old_cc" -a -z "$old_cflags"; then
    echo No shared library support. | tee -a configure.log
    shared=0;
  else
    echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
    shared=0;
  fi
fi
if test $shared -eq 0; then
  LDSHARED="$CC"
  ALL="static"
  TEST="all teststatic"
  SHAREDLIB=""
  SHAREDLIBV=""
  SHAREDLIBM=""
  echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
else
  ALL="static shared"
  TEST="all teststatic testshared"
fi

echo >> configure.log

# check for size_t
cat > $test.c <<EOF
#include <stdio.h>
#include <stdlib.h>
size_t dummy = 0;
EOF
if try $CC -c $CFLAGS $test.c; then
  echo "Checking for size_t... Yes." | tee -a configure.log
else
  echo "Checking for size_t... No." | tee -a configure.log
  # find a size_t integer type
  # check for long long
  cat > $test.c << EOF
long long dummy = 0;
EOF
  if try $CC -c $CFLAGS $test.c; then
    echo "Checking for long long... Yes." | tee -a configure.log
    cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
    if (sizeof(void *) <= sizeof(int)) puts("int");
    else if (sizeof(void *) <= sizeof(long)) puts("long");
    else puts("z_longlong");
    return 0;
}
EOF
  else
    echo "Checking for long long... No." | tee -a configure.log
    cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
    if (sizeof(void *) <= sizeof(int)) puts("int");
    else puts("long");
    return 0;
}
EOF
  fi
  if try $CC $CFLAGS -o $test $test.c; then
    sizet=`./$test`
    echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
    CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
    SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
  else
    echo "Checking for a pointer-size integer type... not found." | tee -a configure.log
  fi
fi

echo >> configure.log

# check for large file support, and if none, check for fseeko()
cat > $test.c <<EOF
#include <sys/types.h>
off64_t dummy = 0;
EOF
if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
  CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
  SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
  ALL="${ALL} all64"
  TEST="${TEST} test64"
  echo "Checking for off64_t... Yes." | tee -a configure.log
  echo "Checking for fseeko... Yes." | tee -a configure.log
else
  echo "Checking for off64_t... No." | tee -a configure.log
  echo >> configure.log
  cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
  fseeko(NULL, 0, 0);
  return 0;
}
EOF
  if try $CC $CFLAGS -o $test $test.c; then
    echo "Checking for fseeko... Yes." | tee -a configure.log
  else
    CFLAGS="${CFLAGS} -DNO_FSEEKO"
    SFLAGS="${SFLAGS} -DNO_FSEEKO"
    echo "Checking for fseeko... No." | tee -a configure.log
  fi
fi

echo >> configure.log

# check for strerror() for use by gz* functions
cat > $test.c <<EOF
#include <string.h>
#include <errno.h>
int main() { return strlen(strerror(errno)); }
EOF
if try $CC $CFLAGS -o $test $test.c; then
  echo "Checking for strerror... Yes." | tee -a configure.log
else
  CFLAGS="${CFLAGS} -DNO_STRERROR"
  SFLAGS="${SFLAGS} -DNO_STRERROR"
  echo "Checking for strerror... No." | tee -a configure.log
fi

# copy clean zconf.h for subsequent edits
cp -p ${SRCDIR}zconf.h.in zconf.h

echo >> configure.log

# check for unistd.h and save result in zconf.h
cat > $test.c <<EOF
#include <unistd.h>
int main() { return 0; }
EOF
if try $CC -c $CFLAGS $test.c; then
  sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
  mv zconf.temp.h zconf.h
  echo "Checking for unistd.h... Yes." | tee -a configure.log
else
  echo "Checking for unistd.h... No." | tee -a configure.log
fi

echo >> configure.log

# check for stdarg.h and save result in zconf.h
cat > $test.c <<EOF
#include <stdarg.h>
int main() { return 0; }
EOF
if try $CC -c $CFLAGS $test.c; then
  sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
  mv zconf.temp.h zconf.h
  echo "Checking for stdarg.h... Yes." | tee -a configure.log
else
  echo "Checking for stdarg.h... No." | tee -a configure.log
fi

# if the z_ prefix was requested, save that in zconf.h
if test $zprefix -eq 1; then
  sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
  mv zconf.temp.h zconf.h
  echo >> configure.log
  echo "Using z_ prefix on all symbols." | tee -a configure.log
fi

# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
if test $solo -eq 1; then
  sed '/#define ZCONF_H/a\
#define Z_SOLO

' < zconf.h > zconf.temp.h
  mv zconf.temp.h zconf.h
OBJC='$(OBJZ)'
PIC_OBJC='$(PIC_OBJZ)'
fi

# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
if test $cover -eq 1; then
  CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
  if test -n "$GCC_CLASSIC"; then
    CC=$GCC_CLASSIC
  fi
fi

echo >> configure.log

# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
# return value.  The most secure result is vsnprintf() with a return value.  snprintf() with a
# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
cat > $test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
#include "zconf.h"
int main()
{
#ifndef STDC
  choke me
#endif
  return 0;
}
EOF
if try $CC -c $CFLAGS $test.c; then
  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log

  echo >> configure.log
  cat > $test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
int mytest(const char *fmt, ...)
{
  char buf[20];
  va_list ap;
  va_start(ap, fmt);
  vsnprintf(buf, sizeof(buf), fmt, ap);
  va_end(ap);
  return 0;
}
int main()
{
  return (mytest("Hello%d\n", 1));
}
EOF
  if try $CC $CFLAGS -o $test $test.c; then
    echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log

    echo >> configure.log
    cat >$test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
int mytest(const char *fmt, ...)
{
  int n;
  char buf[20];
  va_list ap;
  va_start(ap, fmt);
  n = vsnprintf(buf, sizeof(buf), fmt, ap);
  va_end(ap);
  return n;
}
int main()
{
  return (mytest("Hello%d\n", 1));
}
EOF

    if try $CC -c $CFLAGS $test.c; then
      echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
    else
      CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
      SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
      echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
      echo "  WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
      echo "  can build but will be open to possible string-format security" | tee -a configure.log
      echo "  vulnerabilities." | tee -a configure.log
    fi
  else
    CFLAGS="$CFLAGS -DNO_vsnprintf"
    SFLAGS="$SFLAGS -DNO_vsnprintf"
    echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
    echo "  WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
    echo "  vulnerabilities." | tee -a configure.log

    echo >> configure.log
    cat >$test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
int mytest(const char *fmt, ...)
{
  int n;
  char buf[20];
  va_list ap;
  va_start(ap, fmt);
  n = vsprintf(buf, fmt, ap);
  va_end(ap);
  return n;
}
int main()
{
  return (mytest("Hello%d\n", 1));
}
EOF

    if try $CC -c $CFLAGS $test.c; then
      echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
    else
      CFLAGS="$CFLAGS -DHAS_vsprintf_void"
      SFLAGS="$SFLAGS -DHAS_vsprintf_void"
      echo "Checking for return value of vsprintf()... No." | tee -a configure.log
      echo "  WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
      echo "  can build but will be open to possible string-format security" | tee -a configure.log
      echo "  vulnerabilities." | tee -a configure.log
    fi
  fi
else
  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log

  echo >> configure.log
  cat >$test.c <<EOF
#include <stdio.h>
int mytest()
{
  char buf[20];
  snprintf(buf, sizeof(buf), "%s", "foo");
  return 0;
}
int main()
{
  return (mytest());
}
EOF

  if try $CC $CFLAGS -o $test $test.c; then
    echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log

    echo >> configure.log
    cat >$test.c <<EOF
#include <stdio.h>
int mytest()
{
  char buf[20];
  return snprintf(buf, sizeof(buf), "%s", "foo");
}
int main()
{
  return (mytest());
}
EOF

    if try $CC -c $CFLAGS $test.c; then
      echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
    else
      CFLAGS="$CFLAGS -DHAS_snprintf_void"
      SFLAGS="$SFLAGS -DHAS_snprintf_void"
      echo "Checking for return value of snprintf()... No." | tee -a configure.log
      echo "  WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
      echo "  can build but will be open to possible string-format security" | tee -a configure.log
      echo "  vulnerabilities." | tee -a configure.log
    fi
  else
    CFLAGS="$CFLAGS -DNO_snprintf"
    SFLAGS="$SFLAGS -DNO_snprintf"
    echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
    echo "  WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
    echo "  vulnerabilities." | tee -a configure.log

    echo >> configure.log
    cat >$test.c <<EOF
#include <stdio.h>
int mytest()
{
  char buf[20];
  return sprintf(buf, "%s", "foo");
}
int main()
{
  return (mytest());
}
EOF

    if try $CC -c $CFLAGS $test.c; then
      echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
    else
      CFLAGS="$CFLAGS -DHAS_sprintf_void"
      SFLAGS="$SFLAGS -DHAS_sprintf_void"
      echo "Checking for return value of sprintf()... No." | tee -a configure.log
      echo "  WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
      echo "  can build but will be open to possible string-format security" | tee -a configure.log
      echo "  vulnerabilities." | tee -a configure.log
    fi
  fi
fi

# see if we can hide zlib internal symbols that are linked between separate source files
if test "$gcc" -eq 1; then
  echo >> configure.log
  cat > $test.c <<EOF
#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
int ZLIB_INTERNAL foo;
int main()
{
  return 0;
}
EOF
  if tryboth $CC -c $CFLAGS $test.c; then
    CFLAGS="$CFLAGS -DHAVE_HIDDEN"
    SFLAGS="$SFLAGS -DHAVE_HIDDEN"
    echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
  else
    echo "Checking for attribute(visibility) support... No." | tee -a configure.log
  fi
fi

# show the results in the log
echo >> configure.log
echo ALL = $ALL >> configure.log
echo AR = $AR >> configure.log
echo ARFLAGS = $ARFLAGS >> configure.log
echo CC = $CC >> configure.log
echo CFLAGS = $CFLAGS >> configure.log
echo CPP = $CPP >> configure.log
echo EXE = $EXE >> configure.log
echo LDCONFIG = $LDCONFIG >> configure.log
echo LDFLAGS = $LDFLAGS >> configure.log
echo LDSHARED = $LDSHARED >> configure.log
echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
echo OBJC = $OBJC >> configure.log
echo PIC_OBJC = $PIC_OBJC >> configure.log
echo RANLIB = $RANLIB >> configure.log
echo SFLAGS = $SFLAGS >> configure.log
echo SHAREDLIB = $SHAREDLIB >> configure.log
echo SHAREDLIBM = $SHAREDLIBM >> configure.log
echo SHAREDLIBV = $SHAREDLIBV >> configure.log
echo STATICLIB = $STATICLIB >> configure.log
echo TEST = $TEST >> configure.log
echo VER = $VER >> configure.log
echo SRCDIR = $SRCDIR >> configure.log
echo exec_prefix = $exec_prefix >> configure.log
echo includedir = $includedir >> configure.log
echo libdir = $libdir >> configure.log
echo mandir = $mandir >> configure.log
echo prefix = $prefix >> configure.log
echo sharedlibdir = $sharedlibdir >> configure.log
echo uname = $uname >> configure.log

# update Makefile with the configure results
sed < ${SRCDIR}Makefile.in "
/^CC *=/s#=.*#=$CC#
/^CFLAGS *=/s#=.*#=$CFLAGS#
/^SFLAGS *=/s#=.*#=$SFLAGS#
/^LDFLAGS *=/s#=.*#=$LDFLAGS#
/^LDSHARED *=/s#=.*#=$LDSHARED#
/^CPP *=/s#=.*#=$CPP#
/^STATICLIB *=/s#=.*#=$STATICLIB#
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
/^AR *=/s#=.*#=$AR#
/^ARFLAGS *=/s#=.*#=$ARFLAGS#
/^RANLIB *=/s#=.*#=$RANLIB#
/^LDCONFIG *=/s#=.*#=$LDCONFIG#
/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
/^EXE *=/s#=.*#=$EXE#
/^SRCDIR *=/s#=.*#=$SRCDIR#
/^ZINC *=/s#=.*#=$ZINC#
/^ZINCOUT *=/s#=.*#=$ZINCOUT#
/^prefix *=/s#=.*#=$prefix#
/^exec_prefix *=/s#=.*#=$exec_prefix#
/^libdir *=/s#=.*#=$libdir#
/^sharedlibdir *=/s#=.*#=$sharedlibdir#
/^includedir *=/s#=.*#=$includedir#
/^mandir *=/s#=.*#=$mandir#
/^OBJC *=/s#=.*#= $OBJC#
/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
/^all: */s#:.*#: $ALL#
/^test: */s#:.*#: $TEST#
" > Makefile

# create zlib.pc with the configure results
sed < ${SRCDIR}zlib.pc.in "
/^CC *=/s#=.*#=$CC#
/^CFLAGS *=/s#=.*#=$CFLAGS#
/^CPP *=/s#=.*#=$CPP#
/^LDSHARED *=/s#=.*#=$LDSHARED#
/^STATICLIB *=/s#=.*#=$STATICLIB#
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
/^AR *=/s#=.*#=$AR#
/^ARFLAGS *=/s#=.*#=$ARFLAGS#
/^RANLIB *=/s#=.*#=$RANLIB#
/^EXE *=/s#=.*#=$EXE#
/^prefix *=/s#=.*#=$prefix#
/^exec_prefix *=/s#=.*#=$exec_prefix#
/^libdir *=/s#=.*#=$libdir#
/^sharedlibdir *=/s#=.*#=$sharedlibdir#
/^includedir *=/s#=.*#=$includedir#
/^mandir *=/s#=.*#=$mandir#
/^LDFLAGS *=/s#=.*#=$LDFLAGS#
" | sed -e "
s/\@VERSION\@/$VER/g;
" > zlib.pc

# done
leave 0
Added compat/zlib/contrib/README.contrib.

























































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All files under this contrib directory are UNSUPPORTED. They were
provided by users of zlib and were not tested by the authors of zlib.
Use at your own risk. Please contact the authors of the contributions
for help about these, not the zlib authors. Thanks.


ada/        by Dmitriy Anisimkov <anisimkov@yahoo.com>
        Support for Ada
        See http://zlib-ada.sourceforge.net/

blast/      by Mark Adler <madler@alumni.caltech.edu>
        Decompressor for output of PKWare Data Compression Library (DCL)

delphi/     by Cosmin Truta <cosmint@cs.ubbcluj.ro>
        Support for Delphi and C++ Builder

dotzlib/    by Henrik Ravn <henrik@ravn.com>
        Support for Microsoft .Net and Visual C++ .Net

gcc_gvmat64/by Gilles Vollant <info@winimage.com>
        GCC Version of x86 64-bit (AMD64 and Intel EM64t) code for x64
        assembler to replace longest_match() and inflate_fast()

infback9/   by Mark Adler <madler@alumni.caltech.edu>
        Unsupported diffs to infback to decode the deflate64 format

iostream/   by Kevin Ruland <kevin@rodin.wustl.edu>
        A C++ I/O streams interface to the zlib gz* functions

iostream2/  by Tyge Løvset <Tyge.Lovset@cmr.no>
        Another C++ I/O streams interface

iostream3/  by Ludwig Schwardt <schwardt@sun.ac.za>
            and Kevin Ruland <kevin@rodin.wustl.edu>
        Yet another C++ I/O streams interface

minizip/    by Gilles Vollant <info@winimage.com>
        Mini zip and unzip based on zlib
        Includes Zip64 support by Mathias Svensson <mathias@result42.com>
        See http://www.winimage.com/zLibDll/minizip.html

pascal/     by Bob Dellaca <bobdl@xtra.co.nz> et al.
        Support for Pascal

puff/       by Mark Adler <madler@alumni.caltech.edu>
        Small, low memory usage inflate.  Also serves to provide an
        unambiguous description of the deflate format.

testzlib/   by Gilles Vollant <info@winimage.com>
        Example of the use of zlib

untgz/      by Pedro A. Aranda Gutierrez <paag@tid.es>
        A very simple tar.gz file extractor using zlib

vstudio/    by Gilles Vollant <info@winimage.com>
        Building a minizip-enhanced zlib with Microsoft Visual Studio
        Includes vc11 from kreuzerkrieg and vc12 from davispuh
Added compat/zlib/contrib/blast/Makefile.








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blast: blast.c blast.h
	cc -DTEST -o blast blast.c

test: blast
	blast < test.pk | cmp - test.txt

clean:
	rm -f blast blast.o
Added compat/zlib/contrib/blast/README.




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Read blast.h for purpose and usage.

Mark Adler
madler@alumni.caltech.edu
Added compat/zlib/contrib/blast/blast.c.


















































































































































































































































































































































































































































































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/* blast.c
 * Copyright (C) 2003, 2012, 2013 Mark Adler
 * For conditions of distribution and use, see copyright notice in blast.h
 * version 1.3, 24 Aug 2013
 *
 * blast.c decompresses data compressed by the PKWare Compression Library.
 * This function provides functionality similar to the explode() function of
 * the PKWare library, hence the name "blast".
 *
 * This decompressor is based on the excellent format description provided by
 * Ben Rudiak-Gould in comp.compression on August 13, 2001.  Interestingly, the
 * example Ben provided in the post is incorrect.  The distance 110001 should
 * instead be 111000.  When corrected, the example byte stream becomes:
 *
 *    00 04 82 24 25 8f 80 7f
 *
 * which decompresses to "AIAIAIAIAIAIA" (without the quotes).
 */

/*
 * Change history:
 *
 * 1.0  12 Feb 2003     - First version
 * 1.1  16 Feb 2003     - Fixed distance check for > 4 GB uncompressed data
 * 1.2  24 Oct 2012     - Add note about using binary mode in stdio
 *                      - Fix comparisons of differently signed integers
 * 1.3  24 Aug 2013     - Return unused input from blast()
 *                      - Fix test code to correctly report unused input
 *                      - Enable the provision of initial input to blast()
 */

#include <stddef.h>             /* for NULL */
#include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
#include "blast.h"              /* prototype for blast() */

#define local static            /* for local function definitions */
#define MAXBITS 13              /* maximum code length */
#define MAXWIN 4096             /* maximum window size */

/* input and output state */
struct state {
    /* input state */
    blast_in infun;             /* input function provided by user */
    void *inhow;                /* opaque information passed to infun() */
    unsigned char *in;          /* next input location */
    unsigned left;              /* available input at in */
    int bitbuf;                 /* bit buffer */
    int bitcnt;                 /* number of bits in bit buffer */

    /* input limit error return state for bits() and decode() */
    jmp_buf env;

    /* output state */
    blast_out outfun;           /* output function provided by user */
    void *outhow;               /* opaque information passed to outfun() */
    unsigned next;              /* index of next write location in out[] */
    int first;                  /* true to check distances (for first 4K) */
    unsigned char out[MAXWIN];  /* output buffer and sliding window */
};

/*
 * Return need bits from the input stream.  This always leaves less than
 * eight bits in the buffer.  bits() works properly for need == 0.
 *
 * Format notes:
 *
 * - Bits are stored in bytes from the least significant bit to the most
 *   significant bit.  Therefore bits are dropped from the bottom of the bit
 *   buffer, using shift right, and new bytes are appended to the top of the
 *   bit buffer, using shift left.
 */
local int bits(struct state *s, int need)
{
    int val;            /* bit accumulator */

    /* load at least need bits into val */
    val = s->bitbuf;
    while (s->bitcnt < need) {
        if (s->left == 0) {
            s->left = s->infun(s->inhow, &(s->in));
            if (s->left == 0) longjmp(s->env, 1);       /* out of input */
        }
        val |= (int)(*(s->in)++) << s->bitcnt;          /* load eight bits */
        s->left--;
        s->bitcnt += 8;
    }

    /* drop need bits and update buffer, always zero to seven bits left */
    s->bitbuf = val >> need;
    s->bitcnt -= need;

    /* return need bits, zeroing the bits above that */
    return val & ((1 << need) - 1);
}

/*
 * Huffman code decoding tables.  count[1..MAXBITS] is the number of symbols of
 * each length, which for a canonical code are stepped through in order.
 * symbol[] are the symbol values in canonical order, where the number of
 * entries is the sum of the counts in count[].  The decoding process can be
 * seen in the function decode() below.
 */
struct huffman {
    short *count;       /* number of symbols of each length */
    short *symbol;      /* canonically ordered symbols */
};

/*
 * Decode a code from the stream s using huffman table h.  Return the symbol or
 * a negative value if there is an error.  If all of the lengths are zero, i.e.
 * an empty code, or if the code is incomplete and an invalid code is received,
 * then -9 is returned after reading MAXBITS bits.
 *
 * Format notes:
 *
 * - The codes as stored in the compressed data are bit-reversed relative to
 *   a simple integer ordering of codes of the same lengths.  Hence below the
 *   bits are pulled from the compressed data one at a time and used to
 *   build the code value reversed from what is in the stream in order to
 *   permit simple integer comparisons for decoding.
 *
 * - The first code for the shortest length is all ones.  Subsequent codes of
 *   the same length are simply integer decrements of the previous code.  When
 *   moving up a length, a one bit is appended to the code.  For a complete
 *   code, the last code of the longest length will be all zeros.  To support
 *   this ordering, the bits pulled during decoding are inverted to apply the
 *   more "natural" ordering starting with all zeros and incrementing.
 */
local int decode(struct state *s, struct huffman *h)
{
    int len;            /* current number of bits in code */
    int code;           /* len bits being decoded */
    int first;          /* first code of length len */
    int count;          /* number of codes of length len */
    int index;          /* index of first code of length len in symbol table */
    int bitbuf;         /* bits from stream */
    int left;           /* bits left in next or left to process */
    short *next;        /* next number of codes */

    bitbuf = s->bitbuf;
    left = s->bitcnt;
    code = first = index = 0;
    len = 1;
    next = h->count + 1;
    while (1) {
        while (left--) {
            code |= (bitbuf & 1) ^ 1;   /* invert code */
            bitbuf >>= 1;
            count = *next++;
            if (code < first + count) { /* if length len, return symbol */
                s->bitbuf = bitbuf;
                s->bitcnt = (s->bitcnt - len) & 7;
                return h->symbol[index + (code - first)];
            }
            index += count;             /* else update for next length */
            first += count;
            first <<= 1;
            code <<= 1;
            len++;
        }
        left = (MAXBITS+1) - len;
        if (left == 0) break;
        if (s->left == 0) {
            s->left = s->infun(s->inhow, &(s->in));
            if (s->left == 0) longjmp(s->env, 1);       /* out of input */
        }
        bitbuf = *(s->in)++;
        s->left--;
        if (left > 8) left = 8;
    }
    return -9;                          /* ran out of codes */
}

/*
 * Given a list of repeated code lengths rep[0..n-1], where each byte is a
 * count (high four bits + 1) and a code length (low four bits), generate the
 * list of code lengths.  This compaction reduces the size of the object code.
 * Then given the list of code lengths length[0..n-1] representing a canonical
 * Huffman code for n symbols, construct the tables required to decode those
 * codes.  Those tables are the number of codes of each length, and the symbols
 * sorted by length, retaining their original order within each length.  The
 * return value is zero for a complete code set, negative for an over-
 * subscribed code set, and positive for an incomplete code set.  The tables
 * can be used if the return value is zero or positive, but they cannot be used
 * if the return value is negative.  If the return value is zero, it is not
 * possible for decode() using that table to return an error--any stream of
 * enough bits will resolve to a symbol.  If the return value is positive, then
 * it is possible for decode() using that table to return an error for received
 * codes past the end of the incomplete lengths.
 */
local int construct(struct huffman *h, const unsigned char *rep, int n)
{
    int symbol;         /* current symbol when stepping through length[] */
    int len;            /* current length when stepping through h->count[] */
    int left;           /* number of possible codes left of current length */
    short offs[MAXBITS+1];      /* offsets in symbol table for each length */
    short length[256];  /* code lengths */

    /* convert compact repeat counts into symbol bit length list */
    symbol = 0;
    do {
        len = *rep++;
        left = (len >> 4) + 1;
        len &= 15;
        do {
            length[symbol++] = len;
        } while (--left);
    } while (--n);
    n = symbol;

    /* count number of codes of each length */
    for (len = 0; len <= MAXBITS; len++)
        h->count[len] = 0;
    for (symbol = 0; symbol < n; symbol++)
        (h->count[length[symbol]])++;   /* assumes lengths are within bounds */
    if (h->count[0] == n)               /* no codes! */
        return 0;                       /* complete, but decode() will fail */

    /* check for an over-subscribed or incomplete set of lengths */
    left = 1;                           /* one possible code of zero length */
    for (len = 1; len <= MAXBITS; len++) {
        left <<= 1;                     /* one more bit, double codes left */
        left -= h->count[len];          /* deduct count from possible codes */
        if (left < 0) return left;      /* over-subscribed--return negative */
    }                                   /* left > 0 means incomplete */

    /* generate offsets into symbol table for each length for sorting */
    offs[1] = 0;
    for (len = 1; len < MAXBITS; len++)
        offs[len + 1] = offs[len] + h->count[len];

    /*
     * put symbols in table sorted by length, by symbol order within each
     * length
     */
    for (symbol = 0; symbol < n; symbol++)
        if (length[symbol] != 0)
            h->symbol[offs[length[symbol]]++] = symbol;

    /* return zero for complete set, positive for incomplete set */
    return left;
}

/*
 * Decode PKWare Compression Library stream.
 *
 * Format notes:
 *
 * - First byte is 0 if literals are uncoded or 1 if they are coded.  Second
 *   byte is 4, 5, or 6 for the number of extra bits in the distance code.
 *   This is the base-2 logarithm of the dictionary size minus six.
 *
 * - Compressed data is a combination of literals and length/distance pairs
 *   terminated by an end code.  Literals are either Huffman coded or
 *   uncoded bytes.  A length/distance pair is a coded length followed by a
 *   coded distance to represent a string that occurs earlier in the
 *   uncompressed data that occurs again at the current location.
 *
 * - A bit preceding a literal or length/distance pair indicates which comes
 *   next, 0 for literals, 1 for length/distance.
 *
 * - If literals are uncoded, then the next eight bits are the literal, in the
 *   normal bit order in the stream, i.e. no bit-reversal is needed. Similarly,
 *   no bit reversal is needed for either the length extra bits or the distance
 *   extra bits.
 *
 * - Literal bytes are simply written to the output.  A length/distance pair is
 *   an instruction to copy previously uncompressed bytes to the output.  The
 *   copy is from distance bytes back in the output stream, copying for length
 *   bytes.
 *
 * - Distances pointing before the beginning of the output data are not
 *   permitted.
 *
 * - Overlapped copies, where the length is greater than the distance, are
 *   allowed and common.  For example, a distance of one and a length of 518
 *   simply copies the last byte 518 times.  A distance of four and a length of
 *   twelve copies the last four bytes three times.  A simple forward copy
 *   ignoring whether the length is greater than the distance or not implements
 *   this correctly.
 */
local int decomp(struct state *s)
{
    int lit;            /* true if literals are coded */
    int dict;           /* log2(dictionary size) - 6 */
    int symbol;         /* decoded symbol, extra bits for distance */
    int len;            /* length for copy */
    unsigned dist;      /* distance for copy */
    int copy;           /* copy counter */
    unsigned char *from, *to;   /* copy pointers */
    static int virgin = 1;                              /* build tables once */
    static short litcnt[MAXBITS+1], litsym[256];        /* litcode memory */
    static short lencnt[MAXBITS+1], lensym[16];         /* lencode memory */
    static short distcnt[MAXBITS+1], distsym[64];       /* distcode memory */
    static struct huffman litcode = {litcnt, litsym};   /* length code */
    static struct huffman lencode = {lencnt, lensym};   /* length code */
    static struct huffman distcode = {distcnt, distsym};/* distance code */
        /* bit lengths of literal codes */
    static const unsigned char litlen[] = {
        11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
        9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
        7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
        8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
        44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
        44, 173};
        /* bit lengths of length codes 0..15 */
    static const unsigned char lenlen[] = {2, 35, 36, 53, 38, 23};
        /* bit lengths of distance codes 0..63 */
    static const unsigned char distlen[] = {2, 20, 53, 230, 247, 151, 248};
    static const short base[16] = {     /* base for length codes */
        3, 2, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 136, 264};
    static const char extra[16] = {     /* extra bits for length codes */
        0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8};

    /* set up decoding tables (once--might not be thread-safe) */
    if (virgin) {
        construct(&litcode, litlen, sizeof(litlen));
        construct(&lencode, lenlen, sizeof(lenlen));
        construct(&distcode, distlen, sizeof(distlen));
        virgin = 0;
    }

    /* read header */
    lit = bits(s, 8);
    if (lit > 1) return -1;
    dict = bits(s, 8);
    if (dict < 4 || dict > 6) return -2;

    /* decode literals and length/distance pairs */
    do {
        if (bits(s, 1)) {
            /* get length */
            symbol = decode(s, &lencode);
            len = base[symbol] + bits(s, extra[symbol]);
            if (len == 519) break;              /* end code */

            /* get distance */
            symbol = len == 2 ? 2 : dict;
            dist = decode(s, &distcode) << symbol;
            dist += bits(s, symbol);
            dist++;
            if (s->first && dist > s->next)
                return -3;              /* distance too far back */

            /* copy length bytes from distance bytes back */
            do {
                to = s->out + s->next;
                from = to - dist;
                copy = MAXWIN;
                if (s->next < dist) {
                    from += copy;
                    copy = dist;
                }
                copy -= s->next;
                if (copy > len) copy = len;
                len -= copy;
                s->next += copy;
                do {
                    *to++ = *from++;
                } while (--copy);
                if (s->next == MAXWIN) {
                    if (s->outfun(s->outhow, s->out, s->next)) return 1;
                    s->next = 0;
                    s->first = 0;
                }
            } while (len != 0);
        }
        else {
            /* get literal and write it */
            symbol = lit ? decode(s, &litcode) : bits(s, 8);
            s->out[s->next++] = symbol;
            if (s->next == MAXWIN) {
                if (s->outfun(s->outhow, s->out, s->next)) return 1;
                s->next = 0;
                s->first = 0;
            }
        }
    } while (1);
    return 0;
}

/* See comments in blast.h */
int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow,
          unsigned *left, unsigned char **in)
{
    struct state s;             /* input/output state */
    int err;                    /* return value */

    /* initialize input state */
    s.infun = infun;
    s.inhow = inhow;
    if (left != NULL && *left) {
        s.left = *left;
        s.in = *in;
    }
    else
        s.left = 0;
    s.bitbuf = 0;
    s.bitcnt = 0;

    /* initialize output state */
    s.outfun = outfun;
    s.outhow = outhow;
    s.next = 0;
    s.first = 1;

    /* return if bits() or decode() tries to read past available input */
    if (setjmp(s.env) != 0)             /* if came back here via longjmp(), */
        err = 2;                        /*  then skip decomp(), return error */
    else
        err = decomp(&s);               /* decompress */

    /* return unused input */
    if (left != NULL)
        *left = s.left;
    if (in != NULL)
        *in = s.left ? s.in : NULL;

    /* write any leftover output and update the error code if needed */
    if (err != 1 && s.next && s.outfun(s.outhow, s.out, s.next) && err == 0)
        err = 1;
    return err;
}

#ifdef TEST
/* Example of how to use blast() */
#include <stdio.h>
#include <stdlib.h>

#define CHUNK 16384

local unsigned inf(void *how, unsigned char **buf)
{
    static unsigned char hold[CHUNK];

    *buf = hold;
    return fread(hold, 1, CHUNK, (FILE *)how);
}

local int outf(void *how, unsigned char *buf, unsigned len)
{
    return fwrite(buf, 1, len, (FILE *)how) != len;
}

/* Decompress a PKWare Compression Library stream from stdin to stdout */
int main(void)
{
    int ret;
    unsigned left;

    /* decompress to stdout */
    left = 0;
    ret = blast(inf, stdin, outf, stdout, &left, NULL);
    if (ret != 0)
        fprintf(stderr, "blast error: %d\n", ret);

    /* count any leftover bytes */
    while (getchar() != EOF)
        left++;
    if (left)
        fprintf(stderr, "blast warning: %u unused bytes of input\n", left);

    /* return blast() error code */
    return ret;
}
#endif
Added compat/zlib/contrib/blast/blast.h.



















































































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/* blast.h -- interface for blast.c
  Copyright (C) 2003, 2012, 2013 Mark Adler
  version 1.3, 24 Aug 2013

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the author be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Mark Adler    madler@alumni.caltech.edu
 */


/*
 * blast() decompresses the PKWare Data Compression Library (DCL) compressed
 * format.  It provides the same functionality as the explode() function in
 * that library.  (Note: PKWare overused the "implode" verb, and the format
 * used by their library implode() function is completely different and
 * incompatible with the implode compression method supported by PKZIP.)
 *
 * The binary mode for stdio functions should be used to assure that the
 * compressed data is not corrupted when read or written.  For example:
 * fopen(..., "rb") and fopen(..., "wb").
 */


typedef unsigned (*blast_in)(void *how, unsigned char **buf);
typedef int (*blast_out)(void *how, unsigned char *buf, unsigned len);
/* Definitions for input/output functions passed to blast().  See below for
 * what the provided functions need to do.
 */


int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow,
          unsigned *left, unsigned char **in);
/* Decompress input to output using the provided infun() and outfun() calls.
 * On success, the return value of blast() is zero.  If there is an error in
 * the source data, i.e. it is not in the proper format, then a negative value
 * is returned.  If there is not enough input available or there is not enough
 * output space, then a positive error is returned.
 *
 * The input function is invoked: len = infun(how, &buf), where buf is set by
 * infun() to point to the input buffer, and infun() returns the number of
 * available bytes there.  If infun() returns zero, then blast() returns with
 * an input error.  (blast() only asks for input if it needs it.)  inhow is for
 * use by the application to pass an input descriptor to infun(), if desired.
 *
 * If left and in are not NULL and *left is not zero when blast() is called,
 * then the *left bytes at *in are consumed for input before infun() is used.
 *
 * The output function is invoked: err = outfun(how, buf, len), where the bytes
 * to be written are buf[0..len-1].  If err is not zero, then blast() returns
 * with an output error.  outfun() is always called with len <= 4096.  outhow
 * is for use by the application to pass an output descriptor to outfun(), if
 * desired.
 *
 * If there is any unused input, *left is set to the number of bytes that were
 * read and *in points to them.  Otherwise *left is set to zero and *in is set
 * to NULL.  If left or in are NULL, then they are not set.
 *
 * The return codes are:
 *
 *   2:  ran out of input before completing decompression
 *   1:  output error before completing decompression
 *   0:  successful decompression
 *  -1:  literal flag not zero or one
 *  -2:  dictionary size not in 4..6
 *  -3:  distance is too far back
 *
 * At the bottom of blast.c is an example program that uses blast() that can be
 * compiled to produce a command-line decompression filter by defining TEST.
 */
Added compat/zlib/contrib/blast/test.pk.

cannot compute difference between binary files

Added compat/zlib/contrib/blast/test.txt.

1
+
AIAIAIAIAIAIA
Added compat/zlib/contrib/delphi/ZLib.pas.













































































































































































































































































































































































































































































































































































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{*******************************************************}
{                                                       }
{       Borland Delphi Supplemental Components          }
{       ZLIB Data Compression Interface Unit            }
{                                                       }
{       Copyright (c) 1997,99 Borland Corporation       }
{                                                       }
{*******************************************************}

{ Updated for zlib 1.2.x by Cosmin Truta <cosmint@cs.ubbcluj.ro> }

unit ZLib;

interface

uses SysUtils, Classes;

type
  TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
  TFree = procedure (AppData, Block: Pointer); cdecl;

  // Internal structure.  Ignore.
  TZStreamRec = packed record
    next_in: PChar;       // next input byte
    avail_in: Integer;    // number of bytes available at next_in
    total_in: Longint;    // total nb of input bytes read so far

    next_out: PChar;      // next output byte should be put here
    avail_out: Integer;   // remaining free space at next_out
    total_out: Longint;   // total nb of bytes output so far

    msg: PChar;           // last error message, NULL if no error
    internal: Pointer;    // not visible by applications

    zalloc: TAlloc;       // used to allocate the internal state
    zfree: TFree;         // used to free the internal state
    AppData: Pointer;     // private data object passed to zalloc and zfree

    data_type: Integer;   // best guess about the data type: ascii or binary
    adler: Longint;       // adler32 value of the uncompressed data
    reserved: Longint;    // reserved for future use
  end;

  // Abstract ancestor class
  TCustomZlibStream = class(TStream)
  private
    FStrm: TStream;
    FStrmPos: Integer;
    FOnProgress: TNotifyEvent;
    FZRec: TZStreamRec;
    FBuffer: array [Word] of Char;
  protected
    procedure Progress(Sender: TObject); dynamic;
    property OnProgress: TNotifyEvent read FOnProgress write FOnProgress;
    constructor Create(Strm: TStream);
  end;

{ TCompressionStream compresses data on the fly as data is written to it, and
  stores the compressed data to another stream.

  TCompressionStream is write-only and strictly sequential. Reading from the
  stream will raise an exception. Using Seek to move the stream pointer
  will raise an exception.

  Output data is cached internally, written to the output stream only when
  the internal output buffer is full.  All pending output data is flushed
  when the stream is destroyed.

  The Position property returns the number of uncompressed bytes of
  data that have been written to the stream so far.

  CompressionRate returns the on-the-fly percentage by which the original
  data has been compressed:  (1 - (CompressedBytes / UncompressedBytes)) * 100
  If raw data size = 100 and compressed data size = 25, the CompressionRate
  is 75%

  The OnProgress event is called each time the output buffer is filled and
  written to the output stream.  This is useful for updating a progress
  indicator when you are writing a large chunk of data to the compression
  stream in a single call.}


  TCompressionLevel = (clNone, clFastest, clDefault, clMax);

  TCompressionStream = class(TCustomZlibStream)
  private
    function GetCompressionRate: Single;
  public
    constructor Create(CompressionLevel: TCompressionLevel; Dest: TStream);
    destructor Destroy; override;
    function Read(var Buffer; Count: Longint): Longint; override;
    function Write(const Buffer; Count: Longint): Longint; override;
    function Seek(Offset: Longint; Origin: Word): Longint; override;
    property CompressionRate: Single read GetCompressionRate;
    property OnProgress;
  end;

{ TDecompressionStream decompresses data on the fly as data is read from it.

  Compressed data comes from a separate source stream.  TDecompressionStream
  is read-only and unidirectional; you can seek forward in the stream, but not
  backwards.  The special case of setting the stream position to zero is
  allowed.  Seeking forward decompresses data until the requested position in
  the uncompressed data has been reached.  Seeking backwards, seeking relative
  to the end of the stream, requesting the size of the stream, and writing to
  the stream will raise an exception.

  The Position property returns the number of bytes of uncompressed data that
  have been read from the stream so far.

  The OnProgress event is called each time the internal input buffer of
  compressed data is exhausted and the next block is read from the input stream.
  This is useful for updating a progress indicator when you are reading a
  large chunk of data from the decompression stream in a single call.}

  TDecompressionStream = class(TCustomZlibStream)
  public
    constructor Create(Source: TStream);
    destructor Destroy; override;
    function Read(var Buffer; Count: Longint): Longint; override;
    function Write(const Buffer; Count: Longint): Longint; override;
    function Seek(Offset: Longint; Origin: Word): Longint; override;
    property OnProgress;
  end;



{ CompressBuf compresses data, buffer to buffer, in one call.
   In: InBuf = ptr to compressed data
       InBytes = number of bytes in InBuf
  Out: OutBuf = ptr to newly allocated buffer containing decompressed data
       OutBytes = number of bytes in OutBuf   }
procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
                      out OutBuf: Pointer; out OutBytes: Integer);


{ DecompressBuf decompresses data, buffer to buffer, in one call.
   In: InBuf = ptr to compressed data
       InBytes = number of bytes in InBuf
       OutEstimate = zero, or est. size of the decompressed data
  Out: OutBuf = ptr to newly allocated buffer containing decompressed data
       OutBytes = number of bytes in OutBuf   }
procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
 OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);

{ DecompressToUserBuf decompresses data, buffer to buffer, in one call.
   In: InBuf = ptr to compressed data
       InBytes = number of bytes in InBuf
  Out: OutBuf = ptr to user-allocated buffer to contain decompressed data
       BufSize = number of bytes in OutBuf   }
procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
  const OutBuf: Pointer; BufSize: Integer);

const
  zlib_version = '1.3.1';

type
  EZlibError = class(Exception);
  ECompressionError = class(EZlibError);
  EDecompressionError = class(EZlibError);

implementation

uses ZLibConst;

const
  Z_NO_FLUSH      = 0;
  Z_PARTIAL_FLUSH = 1;
  Z_SYNC_FLUSH    = 2;
  Z_FULL_FLUSH    = 3;
  Z_FINISH        = 4;

  Z_OK            = 0;
  Z_STREAM_END    = 1;
  Z_NEED_DICT     = 2;
  Z_ERRNO         = (-1);
  Z_STREAM_ERROR  = (-2);
  Z_DATA_ERROR    = (-3);
  Z_MEM_ERROR     = (-4);
  Z_BUF_ERROR     = (-5);
  Z_VERSION_ERROR = (-6);

  Z_NO_COMPRESSION       =   0;
  Z_BEST_SPEED           =   1;
  Z_BEST_COMPRESSION     =   9;
  Z_DEFAULT_COMPRESSION  = (-1);

  Z_FILTERED            = 1;
  Z_HUFFMAN_ONLY        = 2;
  Z_RLE                 = 3;
  Z_DEFAULT_STRATEGY    = 0;

  Z_BINARY   = 0;
  Z_ASCII    = 1;
  Z_UNKNOWN  = 2;

  Z_DEFLATED = 8;


{$L adler32.obj}
{$L compress.obj}
{$L crc32.obj}
{$L deflate.obj}
{$L infback.obj}
{$L inffast.obj}
{$L inflate.obj}
{$L inftrees.obj}
{$L trees.obj}
{$L uncompr.obj}
{$L zutil.obj}

procedure adler32; external;
procedure compressBound; external;
procedure crc32; external;
procedure deflateInit2_; external;
procedure deflateParams; external;

function _malloc(Size: Integer): Pointer; cdecl;
begin
  Result := AllocMem(Size);
end;

procedure _free(Block: Pointer); cdecl;
begin
  FreeMem(Block);
end;

procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
begin
  FillChar(P^, count, B);
end;

procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
begin
  Move(source^, dest^, count);
end;



// deflate compresses data
function deflateInit_(var strm: TZStreamRec; level: Integer; version: PChar;
  recsize: Integer): Integer; external;
function deflate(var strm: TZStreamRec; flush: Integer): Integer; external;
function deflateEnd(var strm: TZStreamRec): Integer; external;

// inflate decompresses data
function inflateInit_(var strm: TZStreamRec; version: PChar;
  recsize: Integer): Integer; external;
function inflate(var strm: TZStreamRec; flush: Integer): Integer; external;
function inflateEnd(var strm: TZStreamRec): Integer; external;
function inflateReset(var strm: TZStreamRec): Integer; external;


function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
begin
//  GetMem(Result, Items*Size);
  Result := AllocMem(Items * Size);
end;

procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
begin
  FreeMem(Block);
end;

{function zlibCheck(code: Integer): Integer;
begin
  Result := code;
  if code < 0 then
    raise EZlibError.Create('error');    //!!
end;}

function CCheck(code: Integer): Integer;
begin
  Result := code;
  if code < 0 then
    raise ECompressionError.Create('error'); //!!
end;

function DCheck(code: Integer): Integer;
begin
  Result := code;
  if code < 0 then
    raise EDecompressionError.Create('error');  //!!
end;

procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
                      out OutBuf: Pointer; out OutBytes: Integer);
var
  strm: TZStreamRec;
  P: Pointer;
begin
  FillChar(strm, sizeof(strm), 0);
  strm.zalloc := zlibAllocMem;
  strm.zfree := zlibFreeMem;
  OutBytes := ((InBytes + (InBytes div 10) + 12) + 255) and not 255;
  GetMem(OutBuf, OutBytes);
  try
    strm.next_in := InBuf;
    strm.avail_in := InBytes;
    strm.next_out := OutBuf;
    strm.avail_out := OutBytes;
    CCheck(deflateInit_(strm, Z_BEST_COMPRESSION, zlib_version, sizeof(strm)));
    try
      while CCheck(deflate(strm, Z_FINISH)) <> Z_STREAM_END do
      begin
        P := OutBuf;
        Inc(OutBytes, 256);
        ReallocMem(OutBuf, OutBytes);
        strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
        strm.avail_out := 256;
      end;
    finally
      CCheck(deflateEnd(strm));
    end;
    ReallocMem(OutBuf, strm.total_out);
    OutBytes := strm.total_out;
  except
    FreeMem(OutBuf);
    raise
  end;
end;


procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
  OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
var
  strm: TZStreamRec;
  P: Pointer;
  BufInc: Integer;
begin
  FillChar(strm, sizeof(strm), 0);
  strm.zalloc := zlibAllocMem;
  strm.zfree := zlibFreeMem;
  BufInc := (InBytes + 255) and not 255;
  if OutEstimate = 0 then
    OutBytes := BufInc
  else
    OutBytes := OutEstimate;
  GetMem(OutBuf, OutBytes);
  try
    strm.next_in := InBuf;
    strm.avail_in := InBytes;
    strm.next_out := OutBuf;
    strm.avail_out := OutBytes;
    DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
    try
      while DCheck(inflate(strm, Z_NO_FLUSH)) <> Z_STREAM_END do
      begin
        P := OutBuf;
        Inc(OutBytes, BufInc);
        ReallocMem(OutBuf, OutBytes);
        strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
        strm.avail_out := BufInc;
      end;
    finally
      DCheck(inflateEnd(strm));
    end;
    ReallocMem(OutBuf, strm.total_out);
    OutBytes := strm.total_out;
  except
    FreeMem(OutBuf);
    raise
  end;
end;

procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
  const OutBuf: Pointer; BufSize: Integer);
var
  strm: TZStreamRec;
begin
  FillChar(strm, sizeof(strm), 0);
  strm.zalloc := zlibAllocMem;
  strm.zfree := zlibFreeMem;
  strm.next_in := InBuf;
  strm.avail_in := InBytes;
  strm.next_out := OutBuf;
  strm.avail_out := BufSize;
  DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
  try
    if DCheck(inflate(strm, Z_FINISH)) <> Z_STREAM_END then
      raise EZlibError.CreateRes(@sTargetBufferTooSmall);
  finally
    DCheck(inflateEnd(strm));
  end;
end;

// TCustomZlibStream

constructor TCustomZLibStream.Create(Strm: TStream);
begin
  inherited Create;
  FStrm := Strm;
  FStrmPos := Strm.Position;
  FZRec.zalloc := zlibAllocMem;
  FZRec.zfree := zlibFreeMem;
end;

procedure TCustomZLibStream.Progress(Sender: TObject);
begin
  if Assigned(FOnProgress) then FOnProgress(Sender);
end;


// TCompressionStream

constructor TCompressionStream.Create(CompressionLevel: TCompressionLevel;
  Dest: TStream);
const
  Levels: array [TCompressionLevel] of ShortInt =
    (Z_NO_COMPRESSION, Z_BEST_SPEED, Z_DEFAULT_COMPRESSION, Z_BEST_COMPRESSION);
begin
  inherited Create(Dest);
  FZRec.next_out := FBuffer;
  FZRec.avail_out := sizeof(FBuffer);
  CCheck(deflateInit_(FZRec, Levels[CompressionLevel], zlib_version, sizeof(FZRec)));
end;

destructor TCompressionStream.Destroy;
begin
  FZRec.next_in := nil;
  FZRec.avail_in := 0;
  try
    if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
    while (CCheck(deflate(FZRec, Z_FINISH)) <> Z_STREAM_END)
      and (FZRec.avail_out = 0) do
    begin
      FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
      FZRec.next_out := FBuffer;
      FZRec.avail_out := sizeof(FBuffer);
    end;
    if FZRec.avail_out < sizeof(FBuffer) then
      FStrm.WriteBuffer(FBuffer, sizeof(FBuffer) - FZRec.avail_out);
  finally
    deflateEnd(FZRec);
  end;
  inherited Destroy;
end;

function TCompressionStream.Read(var Buffer; Count: Longint): Longint;
begin
  raise ECompressionError.CreateRes(@sInvalidStreamOp);
end;

function TCompressionStream.Write(const Buffer; Count: Longint): Longint;
begin
  FZRec.next_in := @Buffer;
  FZRec.avail_in := Count;
  if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
  while (FZRec.avail_in > 0) do
  begin
    CCheck(deflate(FZRec, 0));
    if FZRec.avail_out = 0 then
    begin
      FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
      FZRec.next_out := FBuffer;
      FZRec.avail_out := sizeof(FBuffer);
      FStrmPos := FStrm.Position;
      Progress(Self);
    end;
  end;
  Result := Count;
end;

function TCompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
begin
  if (Offset = 0) and (Origin = soFromCurrent) then
    Result := FZRec.total_in
  else
    raise ECompressionError.CreateRes(@sInvalidStreamOp);
end;

function TCompressionStream.GetCompressionRate: Single;
begin
  if FZRec.total_in = 0 then
    Result := 0
  else
    Result := (1.0 - (FZRec.total_out / FZRec.total_in)) * 100.0;
end;


// TDecompressionStream

constructor TDecompressionStream.Create(Source: TStream);
begin
  inherited Create(Source);
  FZRec.next_in := FBuffer;
  FZRec.avail_in := 0;
  DCheck(inflateInit_(FZRec, zlib_version, sizeof(FZRec)));
end;

destructor TDecompressionStream.Destroy;
begin
  FStrm.Seek(-FZRec.avail_in, 1);
  inflateEnd(FZRec);
  inherited Destroy;
end;

function TDecompressionStream.Read(var Buffer; Count: Longint): Longint;
begin
  FZRec.next_out := @Buffer;
  FZRec.avail_out := Count;
  if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
  while (FZRec.avail_out > 0) do
  begin
    if FZRec.avail_in = 0 then
    begin
      FZRec.avail_in := FStrm.Read(FBuffer, sizeof(FBuffer));
      if FZRec.avail_in = 0 then
      begin
        Result := Count - FZRec.avail_out;
        Exit;
      end;
      FZRec.next_in := FBuffer;
      FStrmPos := FStrm.Position;
      Progress(Self);
    end;
    CCheck(inflate(FZRec, 0));
  end;
  Result := Count;
end;

function TDecompressionStream.Write(const Buffer; Count: Longint): Longint;
begin
  raise EDecompressionError.CreateRes(@sInvalidStreamOp);
end;

function TDecompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
var
  I: Integer;
  Buf: array [0..4095] of Char;
begin
  if (Offset = 0) and (Origin = soFromBeginning) then
  begin
    DCheck(inflateReset(FZRec));
    FZRec.next_in := FBuffer;
    FZRec.avail_in := 0;
    FStrm.Position := 0;
    FStrmPos := 0;
  end
  else if ( (Offset >= 0) and (Origin = soFromCurrent)) or
          ( ((Offset - FZRec.total_out) > 0) and (Origin = soFromBeginning)) then
  begin
    if Origin = soFromBeginning then Dec(Offset, FZRec.total_out);
    if Offset > 0 then
    begin
      for I := 1 to Offset div sizeof(Buf) do
        ReadBuffer(Buf, sizeof(Buf));
      ReadBuffer(Buf, Offset mod sizeof(Buf));
    end;
  end
  else
    raise EDecompressionError.CreateRes(@sInvalidStreamOp);
  Result := FZRec.total_out;
end;


end.
Added compat/zlib/contrib/delphi/ZLibConst.pas.











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unit ZLibConst;

interface

resourcestring
  sTargetBufferTooSmall = 'ZLib error: target buffer may be too small';
  sInvalidStreamOp = 'Invalid stream operation';

implementation

end.
Added compat/zlib/contrib/delphi/readme.txt.












































































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Overview
========

This directory contains an update to the ZLib interface unit,
distributed by Borland as a Delphi supplemental component.

The original ZLib unit is Copyright (c) 1997,99 Borland Corp.,
and is based on zlib version 1.0.4.  There are a series of bugs
and security problems associated with that old zlib version, and
we recommend the users to update their ZLib unit.


Summary of modifications
========================

- Improved makefile, adapted to zlib version 1.2.1.

- Some field types from TZStreamRec are changed from Integer to
  Longint, for consistency with the zlib.h header, and for 64-bit
  readiness.

- The zlib_version constant is updated.

- The new Z_RLE strategy has its corresponding symbolic constant.

- The allocation and deallocation functions and function types
  (TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl,
  and _malloc and _free are added as C RTL stubs.  As a result,
  the original C sources of zlib can be compiled out of the box,
  and linked to the ZLib unit.


Suggestions for improvements
============================

Currently, the ZLib unit provides only a limited wrapper around
the zlib library, and much of the original zlib functionality is
missing.  Handling compressed file formats like ZIP/GZIP or PNG
cannot be implemented without having this functionality.
Applications that handle these formats are either using their own,
duplicated code, or not using the ZLib unit at all.

Here are a few suggestions:

- Checksum class wrappers around adler32() and crc32(), similar
  to the Java classes that implement the java.util.zip.Checksum
  interface.

- The ability to read and write raw deflate streams, without the
  zlib stream header and trailer.  Raw deflate streams are used
  in the ZIP file format.

- The ability to read and write gzip streams, used in the GZIP
  file format, and normally produced by the gzip program.

- The ability to select a different compression strategy, useful
  to PNG and MNG image compression, and to multimedia compression
  in general.  Besides the compression level

    TCompressionLevel = (clNone, clFastest, clDefault, clMax);

  which, in fact, could have used the 'z' prefix and avoided
  TColor-like symbols

    TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax);

  there could be a compression strategy

    TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle);

- ZIP and GZIP stream handling via TStreams.


--
Cosmin Truta <cosmint@cs.ubbcluj.ro>
Added compat/zlib/contrib/delphi/zlibd32.mak.



































































































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# Makefile for zlib
# For use with Delphi and C++ Builder under Win32
# Updated for zlib 1.2.x by Cosmin Truta

# ------------ Borland C++ ------------

# This project uses the Delphi (fastcall/register) calling convention:
LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl

CC = bcc32
LD = bcc32
AR = tlib
# do not use "-pr" in CFLAGS
CFLAGS = -a -d -k- -O2 $(LOC)
LDFLAGS =


# variables
ZLIB_LIB = zlib.lib

OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj


# targets
all: $(ZLIB_LIB) example.exe minigzip.exe

.c.obj:
	$(CC) -c $(CFLAGS) $*.c

adler32.obj: adler32.c zlib.h zconf.h

compress.obj: compress.c zlib.h zconf.h

crc32.obj: crc32.c zlib.h zconf.h crc32.h

deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h

gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h

gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h

gzread.obj: gzread.c zlib.h zconf.h gzguts.h

gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h

infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h

inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h

trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h

uncompr.obj: uncompr.c zlib.h zconf.h

zutil.obj: zutil.c zutil.h zlib.h zconf.h

example.obj: test/example.c zlib.h zconf.h

minigzip.obj: test/minigzip.c zlib.h zconf.h


# For the sake of the old Borland make,
# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
	-del $(ZLIB_LIB)
	$(AR) $(ZLIB_LIB) $(OBJP1)
	$(AR) $(ZLIB_LIB) $(OBJP2)


# testing
test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

example.exe: example.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)

minigzip.exe: minigzip.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)


# cleanup
clean:
	-del *.obj
	-del *.exe
	-del *.lib
	-del *.tds
	-del zlib.bak
	-del foo.gz

Added compat/zlib/contrib/dotzlib/DotZLib.build.

































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<?xml version="1.0" encoding="utf-8" ?>
<project name="DotZLib" default="build" basedir="./DotZLib">
	<description>A .Net wrapper library around ZLib1.dll</description>

	<property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />
	<property name="build.root" value="bin" />

	<property name="debug" value="true" />
	<property name="nunit" value="true" />

	<property name="build.folder" value="${build.root}/debug/" if="${debug}" />
	<property name="build.folder" value="${build.root}/release/" unless="${debug}" />

	<target name="clean" description="Remove all generated files">
		<delete dir="${build.root}" failonerror="false" />
	</target>

	<target name="build" description="compiles the source code">

		<mkdir dir="${build.folder}" />
		<csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">
			<references basedir="${nunit.location}">
				<includes if="${nunit}" name="nunit.framework.dll" />
			</references>
			<sources>
				<includes name="*.cs" />
				<excludes name="UnitTests.cs" unless="${nunit}" />
			</sources>
			<arg value="/d:nunit" if="${nunit}" />
		</csc>
	</target>

</project>
Added compat/zlib/contrib/dotzlib/DotZLib.chm.

cannot compute difference between binary files

Added compat/zlib/contrib/dotzlib/DotZLib.sln.





















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Microsoft Visual Studio Solution File, Format Version 8.00
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
	ProjectSection(ProjectDependencies) = postProject
	EndProjectSection
EndProject
Global
	GlobalSection(SolutionConfiguration) = preSolution
		Debug = Debug
		Release = Release
	EndGlobalSection
	GlobalSection(ProjectConfiguration) = postSolution
		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET
		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET
		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET
		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET
	EndGlobalSection
	GlobalSection(ExtensibilityGlobals) = postSolution
	EndGlobalSection
	GlobalSection(ExtensibilityAddIns) = postSolution
	EndGlobalSection
EndGlobal
Added compat/zlib/contrib/dotzlib/DotZLib/AssemblyInfo.cs.


























































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using System.Reflection;
using System.Runtime.CompilerServices;

//
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
//
[assembly: AssemblyTitle("DotZLib")]
[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("Henrik Ravn")]
[assembly: AssemblyProduct("")]
[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]

//
// Version information for an assembly consists of the following four values:
//
//      Major Version
//      Minor Version
//      Build Number
//      Revision
//
// You can specify all the values or you can default the Revision and Build Numbers
// by using the '*' as shown below:

[assembly: AssemblyVersion("1.0.*")]

//
// In order to sign your assembly you must specify a key to use. Refer to the
// Microsoft .NET Framework documentation for more information on assembly signing.
//
// Use the attributes below to control which key is used for signing.
//
// Notes:
//   (*) If no key is specified, the assembly is not signed.
//   (*) KeyName refers to a key that has been installed in the Crypto Service
//       Provider (CSP) on your machine. KeyFile refers to a file which contains
//       a key.
//   (*) If the KeyFile and the KeyName values are both specified, the
//       following processing occurs:
//       (1) If the KeyName can be found in the CSP, that key is used.
//       (2) If the KeyName does not exist and the KeyFile does exist, the key
//           in the KeyFile is installed into the CSP and used.
//   (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.
//       When specifying the KeyFile, the location of the KeyFile should be
//       relative to the project output directory which is
//       %Project Directory%\obj\<configuration>. For example, if your KeyFile is
//       located in the project directory, you would specify the AssemblyKeyFile
//       attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]
//   (*) Delay Signing is an advanced option - see the Microsoft .NET Framework
//       documentation for more information on this.
//
[assembly: AssemblyDelaySign(false)]
[assembly: AssemblyKeyFile("")]
[assembly: AssemblyKeyName("")]
Added compat/zlib/contrib/dotzlib/DotZLib/ChecksumImpl.cs.










































































































































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.Runtime.InteropServices;
using System.Text;


namespace DotZLib
{
    #region ChecksumGeneratorBase
    /// <summary>
    /// Implements the common functionality needed for all <see cref="ChecksumGenerator"/>s
    /// </summary>
    /// <example></example>
    public abstract class ChecksumGeneratorBase : ChecksumGenerator
    {
        /// <summary>
        /// The value of the current checksum
        /// </summary>
        protected uint _current;

        /// <summary>
        /// Initializes a new instance of the checksum generator base - the current checksum is
        /// set to zero
        /// </summary>
        public ChecksumGeneratorBase()
        {
            _current = 0;
        }

        /// <summary>
        /// Initializes a new instance of the checksum generator base with a specified value
        /// </summary>
        /// <param name="initialValue">The value to set the current checksum to</param>
        public ChecksumGeneratorBase(uint initialValue)
        {
            _current = initialValue;
        }

        /// <summary>
        /// Resets the current checksum to zero
        /// </summary>
        public void Reset() { _current = 0; }

        /// <summary>
        /// Gets the current checksum value
        /// </summary>
        public uint Value { get { return _current; } }

        /// <summary>
        /// Updates the current checksum with part of an array of bytes
        /// </summary>
        /// <param name="data">The data to update the checksum with</param>
        /// <param name="offset">Where in <c>data</c> to start updating</param>
        /// <param name="count">The number of bytes from <c>data</c> to use</param>
        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
        /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
        /// <remarks>All the other <c>Update</c> methods are implemented in terms of this one.
        /// This is therefore the only method a derived class has to implement</remarks>
        public abstract void Update(byte[] data, int offset, int count);

        /// <summary>
        /// Updates the current checksum with an array of bytes.
        /// </summary>
        /// <param name="data">The data to update the checksum with</param>
        public void Update(byte[] data)
        {
            Update(data, 0, data.Length);
        }

        /// <summary>
        /// Updates the current checksum with the data from a string
        /// </summary>
        /// <param name="data">The string to update the checksum with</param>
        /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
        public void Update(string data)
        {
			Update(Encoding.UTF8.GetBytes(data));
        }

        /// <summary>
        /// Updates the current checksum with the data from a string, using a specific encoding
        /// </summary>
        /// <param name="data">The string to update the checksum with</param>
        /// <param name="encoding">The encoding to use</param>
        public void Update(string data, Encoding encoding)
        {
            Update(encoding.GetBytes(data));
        }

    }
    #endregion

    #region CRC32
    /// <summary>
    /// Implements a CRC32 checksum generator
    /// </summary>
    public sealed class CRC32Checksum : ChecksumGeneratorBase
    {
        #region DLL imports

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern uint crc32(uint crc, int data, uint length);

        #endregion

        /// <summary>
        /// Initializes a new instance of the CRC32 checksum generator
        /// </summary>
        public CRC32Checksum() : base() {}

        /// <summary>
        /// Initializes a new instance of the CRC32 checksum generator with a specified value
        /// </summary>
        /// <param name="initialValue">The value to set the current checksum to</param>
        public CRC32Checksum(uint initialValue) : base(initialValue) {}

        /// <summary>
        /// Updates the current checksum with part of an array of bytes
        /// </summary>
        /// <param name="data">The data to update the checksum with</param>
        /// <param name="offset">Where in <c>data</c> to start updating</param>
        /// <param name="count">The number of bytes from <c>data</c> to use</param>
        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
        /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
        public override void Update(byte[] data, int offset, int count)
        {
            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
            if ((offset+count) > data.Length) throw new ArgumentException();
            GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
            try
            {
                _current = crc32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
            }
            finally
            {
                hData.Free();
            }
        }

    }
    #endregion

    #region Adler
    /// <summary>
    /// Implements a checksum generator that computes the Adler checksum on data
    /// </summary>
    public sealed class AdlerChecksum : ChecksumGeneratorBase
    {
        #region DLL imports

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern uint adler32(uint adler, int data, uint length);

        #endregion

        /// <summary>
        /// Initializes a new instance of the Adler checksum generator
        /// </summary>
        public AdlerChecksum() : base() {}

        /// <summary>
        /// Initializes a new instance of the Adler checksum generator with a specified value
        /// </summary>
        /// <param name="initialValue">The value to set the current checksum to</param>
        public AdlerChecksum(uint initialValue) : base(initialValue) {}

        /// <summary>
        /// Updates the current checksum with part of an array of bytes
        /// </summary>
        /// <param name="data">The data to update the checksum with</param>
        /// <param name="offset">Where in <c>data</c> to start updating</param>
        /// <param name="count">The number of bytes from <c>data</c> to use</param>
        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
        /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
        public override void Update(byte[] data, int offset, int count)
        {
            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
            if ((offset+count) > data.Length) throw new ArgumentException();
            GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
            try
            {
                _current = adler32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
            }
            finally
            {
                hData.Free();
            }
        }

    }
    #endregion

}
Added compat/zlib/contrib/dotzlib/DotZLib/CircularBuffer.cs.



















































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.Diagnostics;

namespace DotZLib
{

	/// <summary>
	/// This class implements a circular buffer
	/// </summary>
	internal class CircularBuffer
	{
        #region Private data
        private int _capacity;
        private int _head;
        private int _tail;
        private int _size;
        private byte[] _buffer;
        #endregion

        public CircularBuffer(int capacity)
        {
            Debug.Assert( capacity > 0 );
            _buffer = new byte[capacity];
            _capacity = capacity;
            _head = 0;
            _tail = 0;
            _size = 0;
        }

        public int Size { get { return _size; } }

        public int Put(byte[] source, int offset, int count)
        {
            Debug.Assert( count > 0 );
            int trueCount = Math.Min(count, _capacity - Size);
            for (int i = 0; i < trueCount; ++i)
                _buffer[(_tail+i) % _capacity] = source[offset+i];
            _tail += trueCount;
            _tail %= _capacity;
            _size += trueCount;
            return trueCount;
        }

        public bool Put(byte b)
        {
            if (Size == _capacity) // no room
                return false;
            _buffer[_tail++] = b;
            _tail %= _capacity;
            ++_size;
            return true;
        }

        public int Get(byte[] destination, int offset, int count)
        {
            int trueCount = Math.Min(count,Size);
            for (int i = 0; i < trueCount; ++i)
                destination[offset + i] = _buffer[(_head+i) % _capacity];
            _head += trueCount;
            _head %= _capacity;
            _size -= trueCount;
            return trueCount;
        }

        public int Get()
        {
            if (Size == 0)
                return -1;

            int result = (int)_buffer[_head++ % _capacity];
            --_size;
            return result;
        }

    }
}
Added compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs.






































































































































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.Runtime.InteropServices;

namespace DotZLib
{
	/// <summary>
	/// Implements the common functionality needed for all <see cref="Codec"/>s
	/// </summary>
	public abstract class CodecBase : Codec, IDisposable
	{

        #region Data members

        /// <summary>
        /// Instance of the internal zlib buffer structure that is
        /// passed to all functions in the zlib dll
        /// </summary>
        internal ZStream _ztream = new ZStream();

        /// <summary>
        /// True if the object instance has been disposed, false otherwise
        /// </summary>
        protected bool _isDisposed = false;

        /// <summary>
        /// The size of the internal buffers
        /// </summary>
        protected const int kBufferSize = 16384;

        private byte[] _outBuffer = new byte[kBufferSize];
        private byte[] _inBuffer = new byte[kBufferSize];

        private GCHandle _hInput;
        private GCHandle _hOutput;

        private uint _checksum = 0;

        #endregion

        /// <summary>
        /// Initializes a new instance of the <c>CodeBase</c> class.
        /// </summary>
		public CodecBase()
		{
            try
            {
                _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
                _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
            }
            catch (Exception)
            {
                CleanUp(false);
                throw;
            }
        }


        #region Codec Members

        /// <summary>
        /// Occurs when more processed data are available.
        /// </summary>
        public event DataAvailableHandler DataAvailable;

        /// <summary>
        /// Fires the <see cref="DataAvailable"/> event
        /// </summary>
        protected void OnDataAvailable()
        {
            if (_ztream.total_out > 0)
            {
                if (DataAvailable != null)
                    DataAvailable( _outBuffer, 0, (int)_ztream.total_out);
                resetOutput();
            }
        }

        /// <summary>
        /// Adds more data to the codec to be processed.
        /// </summary>
        /// <param name="data">Byte array containing the data to be added to the codec</param>
        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
        public void Add(byte[] data)
        {
            Add(data,0,data.Length);
        }

        /// <summary>
        /// Adds more data to the codec to be processed.
        /// </summary>
        /// <param name="data">Byte array containing the data to be added to the codec</param>
        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
        /// <param name="count">The number of bytes to add</param>
        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
        /// <remarks>This must be implemented by a derived class</remarks>
        public abstract void Add(byte[] data, int offset, int count);

        /// <summary>
        /// Finishes up any pending data that needs to be processed and handled.
        /// </summary>
        /// <remarks>This must be implemented by a derived class</remarks>
        public abstract void Finish();

        /// <summary>
        /// Gets the checksum of the data that has been added so far
        /// </summary>
        public uint Checksum { get { return _checksum; } }

        #endregion

        #region Destructor & IDisposable stuff

        /// <summary>
        /// Destroys this instance
        /// </summary>
        ~CodecBase()
        {
            CleanUp(false);
        }

        /// <summary>
        /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
        /// </summary>
        public void Dispose()
        {
            CleanUp(true);
        }

        /// <summary>
        /// Performs any codec specific cleanup
        /// </summary>
        /// <remarks>This must be implemented by a derived class</remarks>
        protected abstract void CleanUp();

        // performs the release of the handles and calls the derived CleanUp()
        private void CleanUp(bool isDisposing)
        {
            if (!_isDisposed)
            {
                CleanUp();
                if (_hInput.IsAllocated)
                    _hInput.Free();
                if (_hOutput.IsAllocated)
                    _hOutput.Free();

                _isDisposed = true;
            }
        }


        #endregion

        #region Helper methods

        /// <summary>
        /// Copies a number of bytes to the internal codec buffer - ready for processing
        /// </summary>
        /// <param name="data">The byte array that contains the data to copy</param>
        /// <param name="startIndex">The index of the first byte to copy</param>
        /// <param name="count">The number of bytes to copy from <c>data</c></param>
        protected void copyInput(byte[] data, int startIndex, int count)
        {
            Array.Copy(data, startIndex, _inBuffer,0, count);
            _ztream.next_in = _hInput.AddrOfPinnedObject();
            _ztream.total_in = 0;
            _ztream.avail_in = (uint)count;

        }

        /// <summary>
        /// Resets the internal output buffers to a known state - ready for processing
        /// </summary>
        protected void resetOutput()
        {
            _ztream.total_out = 0;
            _ztream.avail_out = kBufferSize;
            _ztream.next_out = _hOutput.AddrOfPinnedObject();
        }

        /// <summary>
        /// Updates the running checksum property
        /// </summary>
        /// <param name="newSum">The new checksum value</param>
        protected void setChecksum(uint newSum)
        {
            _checksum = newSum;
        }
        #endregion

    }
}
Added compat/zlib/contrib/dotzlib/DotZLib/Deflater.cs.










































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace DotZLib
{

    /// <summary>
    /// Implements a data compressor, using the deflate algorithm in the ZLib dll
    /// </summary>
	public sealed class Deflater : CodecBase
	{
        #region Dll imports
        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
        private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int deflate(ref ZStream sz, int flush);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int deflateReset(ref ZStream sz);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int deflateEnd(ref ZStream sz);
        #endregion

        /// <summary>
        /// Constructs an new instance of the <c>Deflater</c>
        /// </summary>
        /// <param name="level">The compression level to use for this <c>Deflater</c></param>
		public Deflater(CompressLevel level) : base()
		{
            int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
            if (retval != 0)
                throw new ZLibException(retval, "Could not initialize deflater");

            resetOutput();
		}

        /// <summary>
        /// Adds more data to the codec to be processed.
        /// </summary>
        /// <param name="data">Byte array containing the data to be added to the codec</param>
        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
        /// <param name="count">The number of bytes to add</param>
        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
        public override void Add(byte[] data, int offset, int count)
        {
            if (data == null) throw new ArgumentNullException();
            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
            if ((offset+count) > data.Length) throw new ArgumentException();

            int total = count;
            int inputIndex = offset;
            int err = 0;

            while (err >= 0 && inputIndex < total)
            {
                copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
                while (err >= 0 && _ztream.avail_in > 0)
                {
                    err = deflate(ref _ztream, (int)FlushTypes.None);
                    if (err == 0)
                        while (_ztream.avail_out == 0)
                        {
                            OnDataAvailable();
                            err = deflate(ref _ztream, (int)FlushTypes.None);
                        }
                    inputIndex += (int)_ztream.total_in;
                }
            }
            setChecksum( _ztream.adler );
        }


        /// <summary>
        /// Finishes up any pending data that needs to be processed and handled.
        /// </summary>
        public override void Finish()
        {
            int err;
            do
            {
                err = deflate(ref _ztream, (int)FlushTypes.Finish);
                OnDataAvailable();
            }
            while (err == 0);
            setChecksum( _ztream.adler );
            deflateReset(ref _ztream);
            resetOutput();
        }

        /// <summary>
        /// Closes the internal zlib deflate stream
        /// </summary>
        protected override void CleanUp() { deflateEnd(ref _ztream); }

    }
}
Added compat/zlib/contrib/dotzlib/DotZLib/DotZLib.cs.
































































































































































































































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;


namespace DotZLib
{

    #region Internal types

    /// <summary>
    /// Defines constants for the various flush types used with zlib
    /// </summary>
    internal enum FlushTypes
    {
        None,  Partial,  Sync,  Full,  Finish,  Block
    }

    #region ZStream structure
    // internal mapping of the zlib zstream structure for marshalling
    [StructLayoutAttribute(LayoutKind.Sequential, Pack=4, Size=0, CharSet=CharSet.Ansi)]
    internal struct ZStream
    {
        public IntPtr next_in;
        public uint avail_in;
        public uint total_in;

        public IntPtr next_out;
        public uint avail_out;
        public uint total_out;

        [MarshalAs(UnmanagedType.LPStr)]
        string msg;
        uint state;

        uint zalloc;
        uint zfree;
        uint opaque;

        int data_type;
        public uint adler;
        uint reserved;
    }

    #endregion

    #endregion

    #region Public enums
    /// <summary>
    /// Defines constants for the available compression levels in zlib
    /// </summary>
    public enum CompressLevel : int
    {
        /// <summary>
        /// The default compression level with a reasonable compromise between compression and speed
        /// </summary>
        Default = -1,
        /// <summary>
        /// No compression at all. The data are passed straight through.
        /// </summary>
        None = 0,
        /// <summary>
        /// The maximum compression rate available.
        /// </summary>
        Best = 9,
        /// <summary>
        /// The fastest available compression level.
        /// </summary>
        Fastest = 1
    }
    #endregion

    #region Exception classes
    /// <summary>
    /// The exception that is thrown when an error occurs on the zlib dll
    /// </summary>
    public class ZLibException : ApplicationException
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
        /// error message and error code
        /// </summary>
        /// <param name="errorCode">The zlib error code that caused the exception</param>
        /// <param name="msg">A message that (hopefully) describes the error</param>
        public ZLibException(int errorCode, string msg) : base(String.Format("ZLib error {0} {1}", errorCode, msg))
        {
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
        /// error code
        /// </summary>
        /// <param name="errorCode">The zlib error code that caused the exception</param>
        public ZLibException(int errorCode) : base(String.Format("ZLib error {0}", errorCode))
        {
        }
    }
    #endregion

    #region Interfaces

    /// <summary>
    /// Declares methods and properties that enables a running checksum to be calculated
    /// </summary>
    public interface ChecksumGenerator
    {
        /// <summary>
        /// Gets the current value of the checksum
        /// </summary>
        uint Value { get; }

        /// <summary>
        /// Clears the current checksum to 0
        /// </summary>
        void Reset();

        /// <summary>
        /// Updates the current checksum with an array of bytes
        /// </summary>
        /// <param name="data">The data to update the checksum with</param>
        void Update(byte[] data);

        /// <summary>
        /// Updates the current checksum with part of an array of bytes
        /// </summary>
        /// <param name="data">The data to update the checksum with</param>
        /// <param name="offset">Where in <c>data</c> to start updating</param>
        /// <param name="count">The number of bytes from <c>data</c> to use</param>
        /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
        /// <exception cref="ArgumentNullException"><c>data</c> is a null reference</exception>
        /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
        void Update(byte[] data, int offset, int count);

        /// <summary>
        /// Updates the current checksum with the data from a string
        /// </summary>
        /// <param name="data">The string to update the checksum with</param>
        /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
        void Update(string data);

        /// <summary>
        /// Updates the current checksum with the data from a string, using a specific encoding
        /// </summary>
        /// <param name="data">The string to update the checksum with</param>
        /// <param name="encoding">The encoding to use</param>
        void Update(string data, Encoding encoding);
    }


    /// <summary>
    /// Represents the method that will be called from a codec when new data
    /// are available.
    /// </summary>
    /// <paramref name="data">The byte array containing the processed data</paramref>
    /// <paramref name="startIndex">The index of the first processed byte in <c>data</c></paramref>
    /// <paramref name="count">The number of processed bytes available</paramref>
    /// <remarks>On return from this method, the data may be overwritten, so grab it while you can.
    /// You cannot assume that startIndex will be zero.
    /// </remarks>
    public delegate void DataAvailableHandler(byte[] data, int startIndex, int count);

    /// <summary>
    /// Declares methods and events for implementing compressors/decompressors
    /// </summary>
    public interface Codec
    {
        /// <summary>
        /// Occurs when more processed data are available.
        /// </summary>
        event DataAvailableHandler DataAvailable;

        /// <summary>
        /// Adds more data to the codec to be processed.
        /// </summary>
        /// <param name="data">Byte array containing the data to be added to the codec</param>
        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
        void Add(byte[] data);

        /// <summary>
        /// Adds more data to the codec to be processed.
        /// </summary>
        /// <param name="data">Byte array containing the data to be added to the codec</param>
        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
        /// <param name="count">The number of bytes to add</param>
        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
        void Add(byte[] data, int offset, int count);

        /// <summary>
        /// Finishes up any pending data that needs to be processed and handled.
        /// </summary>
        void Finish();

        /// <summary>
        /// Gets the checksum of the data that has been added so far
        /// </summary>
        uint Checksum { get; }


    }

    #endregion

    #region Classes
    /// <summary>
    /// Encapsulates general information about the ZLib library
    /// </summary>
    public class Info
    {
        #region DLL imports
        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern uint zlibCompileFlags();

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern string zlibVersion();
        #endregion

        #region Private stuff
        private uint _flags;

        // helper function that unpacks a bitsize mask
        private static int bitSize(uint bits)
        {
            switch (bits)
            {
                case 0: return 16;
                case 1: return 32;
                case 2: return 64;
            }
            return -1;
        }
        #endregion

        /// <summary>
        /// Constructs an instance of the <c>Info</c> class.
        /// </summary>
        public Info()
        {
            _flags = zlibCompileFlags();
        }

        /// <summary>
        /// True if the library is compiled with debug info
        /// </summary>
        public bool HasDebugInfo { get { return 0 != (_flags & 0x100); } }

        /// <summary>
        /// True if the library is compiled with assembly optimizations
        /// </summary>
        public bool UsesAssemblyCode { get { return 0 != (_flags & 0x200); } }

        /// <summary>
        /// Gets the size of the unsigned int that was compiled into Zlib
        /// </summary>
        public int SizeOfUInt { get { return bitSize(_flags & 3); } }

        /// <summary>
        /// Gets the size of the unsigned long that was compiled into Zlib
        /// </summary>
        public int SizeOfULong { get { return bitSize((_flags >> 2) & 3); } }

        /// <summary>
        /// Gets the size of the pointers that were compiled into Zlib
        /// </summary>
        public int SizeOfPointer { get { return bitSize((_flags >> 4) & 3); } }

        /// <summary>
        /// Gets the size of the z_off_t type that was compiled into Zlib
        /// </summary>
        public int SizeOfOffset { get { return bitSize((_flags >> 6) & 3); } }

        /// <summary>
        /// Gets the version of ZLib as a string, e.g. "1.2.1"
        /// </summary>
        public static string Version { get { return zlibVersion(); } }
    }

    #endregion

}
Added compat/zlib/contrib/dotzlib/DotZLib/DotZLib.csproj.













































































































































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<VisualStudioProject>
    <CSHARP
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    >
        <Build>
            <Settings
                ApplicationIcon = ""
                AssemblyKeyContainerName = ""
                AssemblyName = "DotZLib"
                AssemblyOriginatorKeyFile = ""
                DefaultClientScript = "JScript"
                DefaultHTMLPageLayout = "Grid"
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                DelaySign = "false"
                OutputType = "Library"
                PreBuildEvent = ""
                PostBuildEvent = ""
                RootNamespace = "DotZLib"
                RunPostBuildEvent = "OnBuildSuccess"
                StartupObject = ""
            >
                <Config
                    Name = "Debug"
                    AllowUnsafeBlocks = "false"
                    BaseAddress = "285212672"
                    CheckForOverflowUnderflow = "false"
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                    NoWarn = "1591"
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                    WarningLevel = "4"
                />
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                    AllowUnsafeBlocks = "false"
                    BaseAddress = "285212672"
                    CheckForOverflowUnderflow = "false"
                    ConfigurationOverrideFile = ""
                    DefineConstants = "TRACE"
                    DocumentationFile = "docs\DotZLib.xml"
                    DebugSymbols = "false"
                    FileAlignment = "4096"
                    IncrementalBuild = "false"
                    NoStdLib = "false"
                    NoWarn = ""
                    Optimize = "true"
                    OutputPath = "bin\Release\"
                    RegisterForComInterop = "false"
                    RemoveIntegerChecks = "false"
                    TreatWarningsAsErrors = "false"
                    WarningLevel = "4"
                />
            </Settings>
            <References>
                <Reference
                    Name = "System"
                    AssemblyName = "System"
                    HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.dll"
                />
                <Reference
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                    AssemblyName = "System.Data"
                    HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.Data.dll"
                />
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                    AssemblyName = "System.Xml"
                    HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.XML.dll"
                />
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                    AssemblyName = "nunit.framework"
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                    AssemblyFolderKey = "hklm\dn\nunit.framework"
                />
            </References>
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        <Files>
            <Include>
                <File
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                    BuildAction = "Compile"
                />
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                    SubType = "Code"
                    BuildAction = "Compile"
                />
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                    RelPath = "CircularBuffer.cs"
                    SubType = "Code"
                    BuildAction = "Compile"
                />
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                    SubType = "Code"
                    BuildAction = "Compile"
                />
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                    SubType = "Code"
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                />
                <File
                    RelPath = "DotZLib.cs"
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                />
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                />
                <File
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                />
                <File
                    RelPath = "UnitTests.cs"
                    SubType = "Code"
                    BuildAction = "Compile"
                />
            </Include>
        </Files>
    </CSHARP>
</VisualStudioProject>

Added compat/zlib/contrib/dotzlib/DotZLib/GZipStream.cs.













































































































































































































































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.IO;
using System.Runtime.InteropServices;

namespace DotZLib
{
	/// <summary>
	/// Implements a compressed <see cref="Stream"/>, in GZip (.gz) format.
	/// </summary>
	public class GZipStream : Stream, IDisposable
	{
        #region Dll Imports
        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
        private static extern IntPtr gzopen(string name, string mode);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int gzclose(IntPtr gzFile);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int gzwrite(IntPtr gzFile, int data, int length);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int gzread(IntPtr gzFile, int data, int length);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int gzgetc(IntPtr gzFile);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int gzputc(IntPtr gzFile, int c);

        #endregion

        #region Private data
        private IntPtr _gzFile;
        private bool _isDisposed = false;
        private bool _isWriting;
        #endregion

        #region Constructors
        /// <summary>
        /// Creates a new file as a writeable GZipStream
        /// </summary>
        /// <param name="fileName">The name of the compressed file to create</param>
        /// <param name="level">The compression level to use when adding data</param>
        /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
		public GZipStream(string fileName, CompressLevel level)
		{
            _isWriting = true;
            _gzFile = gzopen(fileName, String.Format("wb{0}", (int)level));
            if (_gzFile == IntPtr.Zero)
                throw new ZLibException(-1, "Could not open " + fileName);
		}

        /// <summary>
        /// Opens an existing file as a readable GZipStream
        /// </summary>
        /// <param name="fileName">The name of the file to open</param>
        /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
        public GZipStream(string fileName)
        {
            _isWriting = false;
            _gzFile = gzopen(fileName, "rb");
            if (_gzFile == IntPtr.Zero)
                throw new ZLibException(-1, "Could not open " + fileName);

        }
        #endregion

        #region Access properties
        /// <summary>
        /// Returns true of this stream can be read from, false otherwise
        /// </summary>
        public override bool CanRead
        {
            get
            {
                return !_isWriting;
            }
        }


        /// <summary>
        /// Returns false.
        /// </summary>
        public override bool CanSeek
        {
            get
            {
                return false;
            }
        }

        /// <summary>
        /// Returns true if this tsream is writeable, false otherwise
        /// </summary>
        public override bool CanWrite
        {
            get
            {
                return _isWriting;
            }
        }
        #endregion

        #region Destructor & IDispose stuff

        /// <summary>
        /// Destroys this instance
        /// </summary>
        ~GZipStream()
        {
            cleanUp(false);
        }

        /// <summary>
        /// Closes the external file handle
        /// </summary>
        public void Dispose()
        {
            cleanUp(true);
        }

        // Does the actual closing of the file handle.
        private void cleanUp(bool isDisposing)
        {
            if (!_isDisposed)
            {
                gzclose(_gzFile);
                _isDisposed = true;
            }
        }
        #endregion

        #region Basic reading and writing
        /// <summary>
        /// Attempts to read a number of bytes from the stream.
        /// </summary>
        /// <param name="buffer">The destination data buffer</param>
        /// <param name="offset">The index of the first destination byte in <c>buffer</c></param>
        /// <param name="count">The number of bytes requested</param>
        /// <returns>The number of bytes read</returns>
        /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
        /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
        /// <exception cref="ArgumentException">If <c>offset</c>  + <c>count</c> is &gt; buffer.Length</exception>
        /// <exception cref="NotSupportedException">If this stream is not readable.</exception>
        /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
        public override int Read(byte[] buffer, int offset, int count)
        {
            if (!CanRead) throw new NotSupportedException();
            if (buffer == null) throw new ArgumentNullException();
            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
            if ((offset+count) > buffer.Length) throw new ArgumentException();
            if (_isDisposed) throw new ObjectDisposedException("GZipStream");

            GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
            int result;
            try
            {
                result = gzread(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
                if (result < 0)
                    throw new IOException();
            }
            finally
            {
                h.Free();
            }
            return result;
        }

        /// <summary>
        /// Attempts to read a single byte from the stream.
        /// </summary>
        /// <returns>The byte that was read, or -1 in case of error or End-Of-File</returns>
        public override int ReadByte()
        {
            if (!CanRead) throw new NotSupportedException();
            if (_isDisposed) throw new ObjectDisposedException("GZipStream");
            return gzgetc(_gzFile);
        }

        /// <summary>
        /// Writes a number of bytes to the stream
        /// </summary>
        /// <param name="buffer"></param>
        /// <param name="offset"></param>
        /// <param name="count"></param>
        /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
        /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
        /// <exception cref="ArgumentException">If <c>offset</c>  + <c>count</c> is &gt; buffer.Length</exception>
        /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
        /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
        public override void Write(byte[] buffer, int offset, int count)
        {
            if (!CanWrite) throw new NotSupportedException();
            if (buffer == null) throw new ArgumentNullException();
            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
            if ((offset+count) > buffer.Length) throw new ArgumentException();
            if (_isDisposed) throw new ObjectDisposedException("GZipStream");

            GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
            try
            {
                int result = gzwrite(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
                if (result < 0)
                    throw new IOException();
            }
            finally
            {
                h.Free();
            }
        }

        /// <summary>
        /// Writes a single byte to the stream
        /// </summary>
        /// <param name="value">The byte to add to the stream.</param>
        /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
        /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
        public override void WriteByte(byte value)
        {
            if (!CanWrite) throw new NotSupportedException();
            if (_isDisposed) throw new ObjectDisposedException("GZipStream");

            int result = gzputc(_gzFile, (int)value);
            if (result < 0)
                throw new IOException();
        }
        #endregion

        #region Position & length stuff
        /// <summary>
        /// Not supported.
        /// </summary>
        /// <param name="value"></param>
        /// <exception cref="NotSupportedException">Always thrown</exception>
        public override void SetLength(long value)
        {
            throw new NotSupportedException();
        }

        /// <summary>
        ///  Not supported.
        /// </summary>
        /// <param name="offset"></param>
        /// <param name="origin"></param>
        /// <returns></returns>
        /// <exception cref="NotSupportedException">Always thrown</exception>
        public override long Seek(long offset, SeekOrigin origin)
        {
            throw new NotSupportedException();
        }

        /// <summary>
        /// Flushes the <c>GZipStream</c>.
        /// </summary>
        /// <remarks>In this implementation, this method does nothing. This is because excessive
        /// flushing may degrade the achievable compression rates.</remarks>
        public override void Flush()
        {
            // left empty on purpose
        }

        /// <summary>
        /// Gets/sets the current position in the <c>GZipStream</c>. Not supported.
        /// </summary>
        /// <remarks>In this implementation this property is not supported</remarks>
        /// <exception cref="NotSupportedException">Always thrown</exception>
        public override long Position
        {
            get
            {
                throw new NotSupportedException();
            }
            set
            {
                throw new NotSupportedException();
            }
        }

        /// <summary>
        /// Gets the size of the stream. Not supported.
        /// </summary>
        /// <remarks>In this implementation this property is not supported</remarks>
        /// <exception cref="NotSupportedException">Always thrown</exception>
        public override long Length
        {
            get
            {
                throw new NotSupportedException();
            }
        }
        #endregion
    }
}
Added compat/zlib/contrib/dotzlib/DotZLib/Inflater.cs.









































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace DotZLib
{

    /// <summary>
    /// Implements a data decompressor, using the inflate algorithm in the ZLib dll
    /// </summary>
    public class Inflater : CodecBase
	{
        #region Dll imports
        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
        private static extern int inflateInit_(ref ZStream sz, string vs, int size);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int inflate(ref ZStream sz, int flush);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int inflateReset(ref ZStream sz);

        [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
        private static extern int inflateEnd(ref ZStream sz);
        #endregion

        /// <summary>
        /// Constructs an new instance of the <c>Inflater</c>
        /// </summary>
        public Inflater() : base()
		{
            int retval = inflateInit_(ref _ztream, Info.Version, Marshal.SizeOf(_ztream));
            if (retval != 0)
                throw new ZLibException(retval, "Could not initialize inflater");

            resetOutput();
        }


        /// <summary>
        /// Adds more data to the codec to be processed.
        /// </summary>
        /// <param name="data">Byte array containing the data to be added to the codec</param>
        /// <param name="offset">The index of the first byte to add from <c>data</c></param>
        /// <param name="count">The number of bytes to add</param>
        /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
        public override void Add(byte[] data, int offset, int count)
        {
            if (data == null) throw new ArgumentNullException();
            if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
            if ((offset+count) > data.Length) throw new ArgumentException();

            int total = count;
            int inputIndex = offset;
            int err = 0;

            while (err >= 0 && inputIndex < total)
            {
                copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
                err = inflate(ref _ztream, (int)FlushTypes.None);
                if (err == 0)
                    while (_ztream.avail_out == 0)
                    {
                        OnDataAvailable();
                        err = inflate(ref _ztream, (int)FlushTypes.None);
                    }

                inputIndex += (int)_ztream.total_in;
            }
            setChecksum( _ztream.adler );
        }


        /// <summary>
        /// Finishes up any pending data that needs to be processed and handled.
        /// </summary>
        public override void Finish()
        {
            int err;
            do
            {
                err = inflate(ref _ztream, (int)FlushTypes.Finish);
                OnDataAvailable();
            }
            while (err == 0);
            setChecksum( _ztream.adler );
            inflateReset(ref _ztream);
            resetOutput();
        }

        /// <summary>
        /// Closes the internal zlib inflate stream
        /// </summary>
        protected override void CleanUp() { inflateEnd(ref _ztream); }


	}
}
Added compat/zlib/contrib/dotzlib/DotZLib/UnitTests.cs.


















































































































































































































































































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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

using System;
using System.Collections;
using System.IO;

// uncomment the define below to include unit tests
//#define nunit
#if nunit
using NUnit.Framework;

// Unit tests for the DotZLib class library
// ----------------------------------------
//
// Use this with NUnit 2 from http://www.nunit.org
//

namespace DotZLibTests
{
    using DotZLib;

    // helper methods
    internal class Utils
    {
        public static bool byteArrEqual( byte[] lhs, byte[] rhs )
        {
            if (lhs.Length != rhs.Length)
                return false;
            for (int i = lhs.Length-1; i >= 0; --i)
                if (lhs[i] != rhs[i])
                    return false;
            return true;
        }

    }


    [TestFixture]
    public class CircBufferTests
    {
        #region Circular buffer tests
        [Test]
        public void SinglePutGet()
        {
            CircularBuffer buf = new CircularBuffer(10);
            Assert.AreEqual( 0, buf.Size );
            Assert.AreEqual( -1, buf.Get() );

            Assert.IsTrue(buf.Put( 1 ));
            Assert.AreEqual( 1, buf.Size );
            Assert.AreEqual( 1, buf.Get() );
            Assert.AreEqual( 0, buf.Size );
            Assert.AreEqual( -1, buf.Get() );
        }

        [Test]
        public void BlockPutGet()
        {
            CircularBuffer buf = new CircularBuffer(10);
            byte[] arr = {1,2,3,4,5,6,7,8,9,10};
            Assert.AreEqual( 10, buf.Put(arr,0,10) );
            Assert.AreEqual( 10, buf.Size );
            Assert.IsFalse( buf.Put(11) );
            Assert.AreEqual( 1, buf.Get() );
            Assert.IsTrue( buf.Put(11) );

            byte[] arr2 = (byte[])arr.Clone();
            Assert.AreEqual( 9, buf.Get(arr2,1,9) );
            Assert.IsTrue( Utils.byteArrEqual(arr,arr2) );
        }

        #endregion
    }

    [TestFixture]
    public class ChecksumTests
    {
        #region CRC32 Tests
        [Test]
        public void CRC32_Null()
        {
            CRC32Checksum crc32 = new CRC32Checksum();
            Assert.AreEqual( 0, crc32.Value );

            crc32 = new CRC32Checksum(1);
            Assert.AreEqual( 1, crc32.Value );

            crc32 = new CRC32Checksum(556);
            Assert.AreEqual( 556, crc32.Value );
        }

        [Test]
        public void CRC32_Data()
        {
            CRC32Checksum crc32 = new CRC32Checksum();
            byte[] data = { 1,2,3,4,5,6,7 };
            crc32.Update(data);
            Assert.AreEqual( 0x70e46888, crc32.Value  );

            crc32 = new CRC32Checksum();
            crc32.Update("penguin");
            Assert.AreEqual( 0x0e5c1a120, crc32.Value );

            crc32 = new CRC32Checksum(1);
            crc32.Update("penguin");
            Assert.AreEqual(0x43b6aa94, crc32.Value);

        }
        #endregion

        #region Adler tests

        [Test]
        public void Adler_Null()
        {
            AdlerChecksum adler = new AdlerChecksum();
            Assert.AreEqual(0, adler.Value);

            adler = new AdlerChecksum(1);
            Assert.AreEqual( 1, adler.Value );

            adler = new AdlerChecksum(556);
            Assert.AreEqual( 556, adler.Value );
        }

        [Test]
        public void Adler_Data()
        {
            AdlerChecksum adler = new AdlerChecksum(1);
            byte[] data = { 1,2,3,4,5,6,7 };
            adler.Update(data);
            Assert.AreEqual( 0x5b001d, adler.Value  );

            adler = new AdlerChecksum();
            adler.Update("penguin");
            Assert.AreEqual(0x0bcf02f6, adler.Value );

            adler = new AdlerChecksum(1);
            adler.Update("penguin");
            Assert.AreEqual(0x0bd602f7, adler.Value);

        }
        #endregion
    }

    [TestFixture]
    public class InfoTests
    {
        #region Info tests
        [Test]
        public void Info_Version()
        {
            Info info = new Info();
            Assert.AreEqual("1.3.1", Info.Version);
            Assert.AreEqual(32, info.SizeOfUInt);
            Assert.AreEqual(32, info.SizeOfULong);
            Assert.AreEqual(32, info.SizeOfPointer);
            Assert.AreEqual(32, info.SizeOfOffset);
        }
        #endregion
    }

    [TestFixture]
    public class DeflateInflateTests
    {
        #region Deflate tests
        [Test]
        public void Deflate_Init()
        {
            using (Deflater def = new Deflater(CompressLevel.Default))
            {
            }
        }

        private ArrayList compressedData = new ArrayList();
        private uint adler1;

        private ArrayList uncompressedData = new ArrayList();
        private uint adler2;

        public void CDataAvail(byte[] data, int startIndex, int count)
        {
            for (int i = 0; i < count; ++i)
                compressedData.Add(data[i+startIndex]);
        }

        [Test]
        public void Deflate_Compress()
        {
            compressedData.Clear();

            byte[] testData = new byte[35000];
            for (int i = 0; i < testData.Length; ++i)
                testData[i] = 5;

            using (Deflater def = new Deflater((CompressLevel)5))
            {
                def.DataAvailable += new DataAvailableHandler(CDataAvail);
                def.Add(testData);
                def.Finish();
                adler1 = def.Checksum;
            }
        }
        #endregion

        #region Inflate tests
        [Test]
        public void Inflate_Init()
        {
            using (Inflater inf = new Inflater())
            {
            }
        }

        private void DDataAvail(byte[] data, int startIndex, int count)
        {
            for (int i = 0; i < count; ++i)
                uncompressedData.Add(data[i+startIndex]);
        }

        [Test]
        public void Inflate_Expand()
        {
            uncompressedData.Clear();

            using (Inflater inf = new Inflater())
            {
                inf.DataAvailable += new DataAvailableHandler(DDataAvail);
                inf.Add((byte[])compressedData.ToArray(typeof(byte)));
                inf.Finish();
                adler2 = inf.Checksum;
            }
            Assert.AreEqual( adler1, adler2 );
        }
        #endregion
    }

    [TestFixture]
    public class GZipStreamTests
    {
        #region GZipStream test
        [Test]
        public void GZipStream_WriteRead()
        {
            using (GZipStream gzOut = new GZipStream("gzstream.gz", CompressLevel.Best))
            {
                BinaryWriter writer = new BinaryWriter(gzOut);
                writer.Write("hi there");
                writer.Write(Math.PI);
                writer.Write(42);
            }

            using (GZipStream gzIn = new GZipStream("gzstream.gz"))
            {
                BinaryReader reader = new BinaryReader(gzIn);
                string s = reader.ReadString();
                Assert.AreEqual("hi there",s);
                double d = reader.ReadDouble();
                Assert.AreEqual(Math.PI, d);
                int i = reader.ReadInt32();
                Assert.AreEqual(42,i);
            }

        }
        #endregion
	}
}

#endif
Added compat/zlib/contrib/dotzlib/LICENSE_1_0.txt.























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Boost Software License - Version 1.0 - August 17th, 2003

Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:

The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
Added compat/zlib/contrib/dotzlib/readme.txt.


























































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This directory contains a .Net wrapper class library for the ZLib1.dll

The wrapper includes support for inflating/deflating memory buffers,
.Net streaming wrappers for the gz streams part of zlib, and wrappers
for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples.

Directory structure:
--------------------

LICENSE_1_0.txt       - License file.
readme.txt            - This file.
DotZLib.chm           - Class library documentation
DotZLib.build         - NAnt build file
DotZLib.sln           - Microsoft Visual Studio 2003 solution file

DotZLib\*.cs          - Source files for the class library

Unit tests:
-----------
The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher.
To include unit tests in the build, define nunit before building.


Build instructions:
-------------------

1. Using Visual Studio.Net 2003:
   Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll)
   will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on
   you are building the release or debug version of the library. Check
   DotZLib/UnitTests.cs for instructions on how to include unit tests in the
   build.

2. Using NAnt:
   Open a command prompt with access to the build environment and run nant
   in the same directory as the DotZLib.build file.
   You can define 2 properties on the nant command-line to control the build:
   debug={true|false} to toggle between release/debug builds (default=true).
   nunit={true|false} to include or exclude unit tests (default=true).
   Also the target clean will remove binaries.
   Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release
   or ./DotZLib/bin/debug, depending on whether you are building the release
   or debug version of the library.

   Examples:
     nant -D:debug=false -D:nunit=false
       will build a release mode version of the library without unit tests.
     nant
       will build a debug version of the library with unit tests
     nant clean
       will remove all previously built files.


---------------------------------
Copyright (c) Henrik Ravn 2004

Use, modification and distribution are subject to the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Added compat/zlib/contrib/gcc_gvmat64/gvmat64.S.






























































































































































































































































































































































































































































































































































































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/*
;uInt longest_match_x64(
;    deflate_state *s,
;    IPos cur_match);                             // current match 

; gvmat64.S -- Asm portion of the optimized longest_match for 32 bits x86_64
;  (AMD64 on Athlon 64, Opteron, Phenom
;     and Intel EM64T on Pentium 4 with EM64T, Pentium D, Core 2 Duo, Core I5/I7)
; this file is translation from gvmat64.asm to GCC 4.x (for Linux, Mac XCode)
; Copyright (C) 1995-2010 Jean-loup Gailly, Brian Raiter and Gilles Vollant.
;
; File written by Gilles Vollant, by converting to assembly the longest_match
;  from Jean-loup Gailly in deflate.c of zLib and infoZip zip.
;  and by taking inspiration on asm686 with masm, optimised assembly code
;        from Brian Raiter, written 1998
;
;  This software is provided 'as-is', without any express or implied
;  warranty.  In no event will the authors be held liable for any damages
;  arising from the use of this software.
;
;  Permission is granted to anyone to use this software for any purpose,
;  including commercial applications, and to alter it and redistribute it
;  freely, subject to the following restrictions:
;
;  1. The origin of this software must not be misrepresented; you must not
;     claim that you wrote the original software. If you use this software
;     in a product, an acknowledgment in the product documentation would be
;     appreciated but is not required.
;  2. Altered source versions must be plainly marked as such, and must not be
;     misrepresented as being the original software
;  3. This notice may not be removed or altered from any source distribution.
;
;         http://www.zlib.net
;         http://www.winimage.com/zLibDll
;         http://www.muppetlabs.com/~breadbox/software/assembly.html
;
; to compile this file for zLib, I use option:
;   gcc -c -arch x86_64 gvmat64.S


;uInt longest_match(s, cur_match)
;    deflate_state *s;
;    IPos cur_match;                             // current match /
;
; with XCode for Mac, I had strange error with some jump on intel syntax
; this is why BEFORE_JMP and AFTER_JMP are used
 */


#define BEFORE_JMP .att_syntax
#define AFTER_JMP .intel_syntax noprefix

#ifndef NO_UNDERLINE
#	define	match_init	_match_init
#	define	longest_match	_longest_match
#endif

.intel_syntax noprefix

.globl	match_init, longest_match
.text
longest_match:



#define LocalVarsSize 96
/*
; register used : rax,rbx,rcx,rdx,rsi,rdi,r8,r9,r10,r11,r12
; free register :  r14,r15
; register can be saved : rsp
*/

#define chainlenwmask     (rsp + 8 - LocalVarsSize)
#define nicematch         (rsp + 16 - LocalVarsSize)

#define save_rdi        (rsp + 24 - LocalVarsSize)
#define save_rsi        (rsp + 32 - LocalVarsSize)
#define save_rbx        (rsp + 40 - LocalVarsSize)
#define save_rbp        (rsp + 48 - LocalVarsSize)
#define save_r12        (rsp + 56 - LocalVarsSize)
#define save_r13        (rsp + 64 - LocalVarsSize)
#define save_r14        (rsp + 72 - LocalVarsSize)
#define save_r15        (rsp + 80 - LocalVarsSize)


/*
;  all the +4 offsets are due to the addition of pending_buf_size (in zlib
;  in the deflate_state structure since the asm code was first written
;  (if you compile with zlib 1.0.4 or older, remove the +4).
;  Note : these value are good with a 8 bytes boundary pack structure
*/

#define    MAX_MATCH              258
#define    MIN_MATCH              3
#define    MIN_LOOKAHEAD          (MAX_MATCH+MIN_MATCH+1)

/*
;;; Offsets for fields in the deflate_state structure. These numbers
;;; are calculated from the definition of deflate_state, with the
;;; assumption that the compiler will dword-align the fields. (Thus,
;;; changing the definition of deflate_state could easily cause this
;;; program to crash horribly, without so much as a warning at
;;; compile time. Sigh.)

;  all the +zlib1222add offsets are due to the addition of fields
;  in zlib in the deflate_state structure since the asm code was first written
;  (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
;  (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
;  if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
*/



/* you can check the structure offset by running

#include <stdlib.h>
#include <stdio.h>
#include "deflate.h"

void print_depl()
{
deflate_state ds;
deflate_state *s=&ds;
printf("size pointer=%u\n",(int)sizeof(void*));

printf("#define dsWSize         %u\n",(int)(((char*)&(s->w_size))-((char*)s)));
printf("#define dsWMask         %u\n",(int)(((char*)&(s->w_mask))-((char*)s)));
printf("#define dsWindow        %u\n",(int)(((char*)&(s->window))-((char*)s)));
printf("#define dsPrev          %u\n",(int)(((char*)&(s->prev))-((char*)s)));
printf("#define dsMatchLen      %u\n",(int)(((char*)&(s->match_length))-((char*)s)));
printf("#define dsPrevMatch     %u\n",(int)(((char*)&(s->prev_match))-((char*)s)));
printf("#define dsStrStart      %u\n",(int)(((char*)&(s->strstart))-((char*)s)));
printf("#define dsMatchStart    %u\n",(int)(((char*)&(s->match_start))-((char*)s)));
printf("#define dsLookahead     %u\n",(int)(((char*)&(s->lookahead))-((char*)s)));
printf("#define dsPrevLen       %u\n",(int)(((char*)&(s->prev_length))-((char*)s)));
printf("#define dsMaxChainLen   %u\n",(int)(((char*)&(s->max_chain_length))-((char*)s)));
printf("#define dsGoodMatch     %u\n",(int)(((char*)&(s->good_match))-((char*)s)));
printf("#define dsNiceMatch     %u\n",(int)(((char*)&(s->nice_match))-((char*)s)));
}
*/

#define dsWSize          68
#define dsWMask          76
#define dsWindow         80
#define dsPrev           96
#define dsMatchLen       144
#define dsPrevMatch      148
#define dsStrStart       156
#define dsMatchStart     160
#define dsLookahead      164
#define dsPrevLen        168
#define dsMaxChainLen    172
#define dsGoodMatch      188
#define dsNiceMatch      192

#define window_size      [ rcx + dsWSize]
#define WMask            [ rcx + dsWMask]
#define window_ad        [ rcx + dsWindow]
#define prev_ad          [ rcx + dsPrev]
#define strstart         [ rcx + dsStrStart]
#define match_start      [ rcx + dsMatchStart]
#define Lookahead        [ rcx + dsLookahead] //; 0ffffffffh on infozip
#define prev_length      [ rcx + dsPrevLen]
#define max_chain_length [ rcx + dsMaxChainLen]
#define good_match       [ rcx + dsGoodMatch]
#define nice_match       [ rcx + dsNiceMatch]

/*
; windows:
; parameter 1 in rcx(deflate state s), param 2 in rdx (cur match)

; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and
; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
;
; All registers must be preserved across the call, except for
;   rax, rcx, rdx, r8, r9, r10, and r11, which are scratch.

;
; gcc on macosx-linux:
; see http://www.x86-64.org/documentation/abi-0.99.pdf
; param 1 in rdi, param 2 in rsi
; rbx, rsp, rbp, r12 to r15 must be preserved

;;; Save registers that the compiler may be using, and adjust esp to
;;; make room for our stack frame.


;;; Retrieve the function arguments. r8d will hold cur_match
;;; throughout the entire function. edx will hold the pointer to the
;;; deflate_state structure during the function's setup (before
;;; entering the main loop.

; ms: parameter 1 in rcx (deflate_state* s), param 2 in edx -> r8 (cur match)
; mac: param 1 in rdi, param 2 rsi
; this clear high 32 bits of r8, which can be garbage in both r8 and rdx
*/
        mov [save_rbx],rbx
        mov [save_rbp],rbp


        mov rcx,rdi

        mov r8d,esi


        mov [save_r12],r12
        mov [save_r13],r13
        mov [save_r14],r14
        mov [save_r15],r15


//;;; uInt wmask = s->w_mask;
//;;; unsigned chain_length = s->max_chain_length;
//;;; if (s->prev_length >= s->good_match) {
//;;;     chain_length >>= 2;
//;;; }


        mov edi, prev_length
        mov esi, good_match
        mov eax, WMask
        mov ebx, max_chain_length
        cmp edi, esi
        jl  LastMatchGood
        shr ebx, 2
LastMatchGood:

//;;; chainlen is decremented once beforehand so that the function can
//;;; use the sign flag instead of the zero flag for the exit test.
//;;; It is then shifted into the high word, to make room for the wmask
//;;; value, which it will always accompany.

        dec ebx
        shl ebx, 16
        or  ebx, eax

//;;; on zlib only
//;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;



        mov eax, nice_match
        mov [chainlenwmask], ebx
        mov r10d, Lookahead
        cmp r10d, eax
        cmovnl r10d, eax
        mov [nicematch],r10d



//;;; register Bytef *scan = s->window + s->strstart;
        mov r10, window_ad
        mov ebp, strstart
        lea r13, [r10 + rbp]

//;;; Determine how many bytes the scan ptr is off from being
//;;; dword-aligned.

         mov r9,r13
         neg r13
         and r13,3

//;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
//;;;     s->strstart - (IPos)MAX_DIST(s) : NIL;


        mov eax, window_size
        sub eax, MIN_LOOKAHEAD


        xor edi,edi
        sub ebp, eax

        mov r11d, prev_length

        cmovng ebp,edi

//;;; int best_len = s->prev_length;


//;;; Store the sum of s->window + best_len in esi locally, and in esi.

       lea  rsi,[r10+r11]

//;;; register ush scan_start = *(ushf*)scan;
//;;; register ush scan_end   = *(ushf*)(scan+best_len-1);
//;;; Posf *prev = s->prev;

        movzx r12d,word ptr [r9]
        movzx ebx, word ptr [r9 + r11 - 1]

        mov rdi, prev_ad

//;;; Jump into the main loop.

        mov edx, [chainlenwmask]

        cmp bx,word ptr [rsi + r8 - 1]
        jz  LookupLoopIsZero
				
						
						
LookupLoop1:
        and r8d, edx

        movzx   r8d, word ptr [rdi + r8*2]
        cmp r8d, ebp
        jbe LeaveNow
		
		
		
        sub edx, 0x00010000
		BEFORE_JMP
        js  LeaveNow
		AFTER_JMP

LoopEntry1:
        cmp bx,word ptr [rsi + r8 - 1]
		BEFORE_JMP
        jz  LookupLoopIsZero
		AFTER_JMP

LookupLoop2:
        and r8d, edx

        movzx   r8d, word ptr [rdi + r8*2]
        cmp r8d, ebp
		BEFORE_JMP
        jbe LeaveNow
		AFTER_JMP
        sub edx, 0x00010000
		BEFORE_JMP
        js  LeaveNow
		AFTER_JMP

LoopEntry2:
        cmp bx,word ptr [rsi + r8 - 1]
		BEFORE_JMP
        jz  LookupLoopIsZero
		AFTER_JMP

LookupLoop4:
        and r8d, edx

        movzx   r8d, word ptr [rdi + r8*2]
        cmp r8d, ebp
		BEFORE_JMP
        jbe LeaveNow
		AFTER_JMP
        sub edx, 0x00010000
		BEFORE_JMP
        js  LeaveNow
		AFTER_JMP

LoopEntry4:

        cmp bx,word ptr [rsi + r8 - 1]
		BEFORE_JMP
        jnz LookupLoop1
        jmp LookupLoopIsZero
		AFTER_JMP
/*
;;; do {
;;;     match = s->window + cur_match;
;;;     if (*(ushf*)(match+best_len-1) != scan_end ||
;;;         *(ushf*)match != scan_start) continue;
;;;     [...]
;;; } while ((cur_match = prev[cur_match & wmask]) > limit
;;;          && --chain_length != 0);
;;;
;;; Here is the inner loop of the function. The function will spend the
;;; majority of its time in this loop, and majority of that time will
;;; be spent in the first ten instructions.
;;;
;;; Within this loop:
;;; ebx = scanend
;;; r8d = curmatch
;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
;;; esi = windowbestlen - i.e., (window + bestlen)
;;; edi = prev
;;; ebp = limit
*/
.balign 16
LookupLoop:
        and r8d, edx

        movzx   r8d, word ptr [rdi + r8*2]
        cmp r8d, ebp
		BEFORE_JMP
        jbe LeaveNow
		AFTER_JMP
        sub edx, 0x00010000
		BEFORE_JMP
        js  LeaveNow
		AFTER_JMP

LoopEntry:

        cmp bx,word ptr [rsi + r8 - 1]
		BEFORE_JMP
        jnz LookupLoop1
		AFTER_JMP
LookupLoopIsZero:
        cmp     r12w, word ptr [r10 + r8]
		BEFORE_JMP
        jnz LookupLoop1
		AFTER_JMP


//;;; Store the current value of chainlen.
        mov [chainlenwmask], edx
/*
;;; Point edi to the string under scrutiny, and esi to the string we
;;; are hoping to match it up with. In actuality, esi and edi are
;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is
;;; initialized to -(MAX_MATCH_8 - scanalign).
*/
        lea rsi,[r8+r10]
        mov rdx, 0xfffffffffffffef8 //; -(MAX_MATCH_8)
        lea rsi, [rsi + r13 + 0x0108] //;MAX_MATCH_8]
        lea rdi, [r9 + r13 + 0x0108] //;MAX_MATCH_8]

        prefetcht1 [rsi+rdx]
        prefetcht1 [rdi+rdx]

/*
;;; Test the strings for equality, 8 bytes at a time. At the end,
;;; adjust rdx so that it is offset to the exact byte that mismatched.
;;;
;;; We already know at this point that the first three bytes of the
;;; strings match each other, and they can be safely passed over before
;;; starting the compare loop. So what this code does is skip over 0-3
;;; bytes, as much as necessary in order to dword-align the edi
;;; pointer. (rsi will still be misaligned three times out of four.)
;;;
;;; It should be confessed that this loop usually does not represent
;;; much of the total running time. Replacing it with a more
;;; straightforward "rep cmpsb" would not drastically degrade
;;; performance.
*/

LoopCmps:
        mov rax, [rsi + rdx]
        xor rax, [rdi + rdx]
        jnz LeaveLoopCmps

        mov rax, [rsi + rdx + 8]
        xor rax, [rdi + rdx + 8]
        jnz LeaveLoopCmps8


        mov rax, [rsi + rdx + 8+8]
        xor rax, [rdi + rdx + 8+8]
        jnz LeaveLoopCmps16

        add rdx,8+8+8

		BEFORE_JMP
        jnz  LoopCmps
        jmp  LenMaximum
		AFTER_JMP
		
LeaveLoopCmps16: add rdx,8
LeaveLoopCmps8: add rdx,8
LeaveLoopCmps:

        test    eax, 0x0000FFFF
        jnz LenLower

        test eax,0xffffffff

        jnz LenLower32

        add rdx,4
        shr rax,32
        or ax,ax
		BEFORE_JMP
        jnz LenLower
		AFTER_JMP

LenLower32:
        shr eax,16
        add rdx,2
		
LenLower:		
        sub al, 1
        adc rdx, 0
//;;; Calculate the length of the match. If it is longer than MAX_MATCH,
//;;; then automatically accept it as the best possible match and leave.

        lea rax, [rdi + rdx]
        sub rax, r9
        cmp eax, MAX_MATCH
		BEFORE_JMP
        jge LenMaximum
		AFTER_JMP
/*
;;; If the length of the match is not longer than the best match we
;;; have so far, then forget it and return to the lookup loop.
;///////////////////////////////////
*/
        cmp eax, r11d
        jg  LongerMatch

        lea rsi,[r10+r11]

        mov rdi, prev_ad
        mov edx, [chainlenwmask]
		BEFORE_JMP
        jmp LookupLoop
		AFTER_JMP
/*
;;;         s->match_start = cur_match;
;;;         best_len = len;
;;;         if (len >= nice_match) break;
;;;         scan_end = *(ushf*)(scan+best_len-1);
*/
LongerMatch:
        mov r11d, eax
        mov match_start, r8d
        cmp eax, [nicematch]
		BEFORE_JMP
        jge LeaveNow
		AFTER_JMP

        lea rsi,[r10+rax]

        movzx   ebx, word ptr [r9 + rax - 1]
        mov rdi, prev_ad
        mov edx, [chainlenwmask]
		BEFORE_JMP
        jmp LookupLoop
		AFTER_JMP

//;;; Accept the current string, with the maximum possible length.

LenMaximum:
        mov r11d,MAX_MATCH
        mov match_start, r8d

//;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
//;;; return s->lookahead;

LeaveNow:
        mov eax, Lookahead
        cmp r11d, eax
        cmovng eax, r11d



//;;; Restore the stack and return from whence we came.


//        mov rsi,[save_rsi]
//        mov rdi,[save_rdi]
        mov rbx,[save_rbx]
        mov rbp,[save_rbp]
        mov r12,[save_r12]
        mov r13,[save_r13]
        mov r14,[save_r14]
        mov r15,[save_r15]


        ret 0
//; please don't remove this string !
//; Your can freely use gvmat64 in any free or commercial app
//; but it is far better don't remove the string in the binary!
 //   db     0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998, converted to amd 64 by Gilles Vollant 2005",0dh,0ah,0


match_init:
  ret 0


Added compat/zlib/contrib/infback9/README.

1
+
See infback9.h for what this is and how to use it.
Added compat/zlib/contrib/infback9/infback9.c.



























































































































































































































































































































































































































































































































































































































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/* infback9.c -- inflate deflate64 data using a call-back interface
 * Copyright (C) 1995-2008 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "zutil.h"
#include "infback9.h"
#include "inftree9.h"
#include "inflate9.h"

#define WSIZE 65536UL

/*
   strm provides memory allocation functions in zalloc and zfree, or
   Z_NULL to use the library memory allocation functions.

   window is a user-supplied window and output buffer that is 64K bytes.
 */
int ZEXPORT inflateBack9Init_(z_stream FAR *strm, unsigned char FAR *window,
                              const char *version, int stream_size) {
    struct inflate_state FAR *state;

    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
        stream_size != (int)(sizeof(z_stream)))
        return Z_VERSION_ERROR;
    if (strm == Z_NULL || window == Z_NULL)
        return Z_STREAM_ERROR;
    strm->msg = Z_NULL;                 /* in case we return an error */
    if (strm->zalloc == (alloc_func)0) {
        strm->zalloc = zcalloc;
        strm->opaque = (voidpf)0;
    }
    if (strm->zfree == (free_func)0) strm->zfree = zcfree;
    state = (struct inflate_state FAR *)ZALLOC(strm, 1,
                                               sizeof(struct inflate_state));
    if (state == Z_NULL) return Z_MEM_ERROR;
    Tracev((stderr, "inflate: allocated\n"));
    strm->state = (voidpf)state;
    state->window = window;
    return Z_OK;
}

/*
   Build and output length and distance decoding tables for fixed code
   decoding.
 */
#ifdef MAKEFIXED
#include <stdio.h>

void makefixed9(void) {
    unsigned sym, bits, low, size;
    code *next, *lenfix, *distfix;
    struct inflate_state state;
    code fixed[544];

    /* literal/length table */
    sym = 0;
    while (sym < 144) state.lens[sym++] = 8;
    while (sym < 256) state.lens[sym++] = 9;
    while (sym < 280) state.lens[sym++] = 7;
    while (sym < 288) state.lens[sym++] = 8;
    next = fixed;
    lenfix = next;
    bits = 9;
    inflate_table9(LENS, state.lens, 288, &(next), &(bits), state.work);

    /* distance table */
    sym = 0;
    while (sym < 32) state.lens[sym++] = 5;
    distfix = next;
    bits = 5;
    inflate_table9(DISTS, state.lens, 32, &(next), &(bits), state.work);

    /* write tables */
    puts("    /* inffix9.h -- table for decoding deflate64 fixed codes");
    puts("     * Generated automatically by makefixed9().");
    puts("     */");
    puts("");
    puts("    /* WARNING: this file should *not* be used by applications.");
    puts("       It is part of the implementation of this library and is");
    puts("       subject to change. Applications should only use zlib.h.");
    puts("     */");
    puts("");
    size = 1U << 9;
    printf("    static const code lenfix[%u] = {", size);
    low = 0;
    for (;;) {
        if ((low % 6) == 0) printf("\n        ");
        printf("{%u,%u,%d}", lenfix[low].op, lenfix[low].bits,
               lenfix[low].val);
        if (++low == size) break;
        putchar(',');
    }
    puts("\n    };");
    size = 1U << 5;
    printf("\n    static const code distfix[%u] = {", size);
    low = 0;
    for (;;) {
        if ((low % 5) == 0) printf("\n        ");
        printf("{%u,%u,%d}", distfix[low].op, distfix[low].bits,
               distfix[low].val);
        if (++low == size) break;
        putchar(',');
    }
    puts("\n    };");
}
#endif /* MAKEFIXED */

/* Macros for inflateBack(): */

/* Clear the input bit accumulator */
#define INITBITS() \
    do { \
        hold = 0; \
        bits = 0; \
    } while (0)

/* Assure that some input is available.  If input is requested, but denied,
   then return a Z_BUF_ERROR from inflateBack(). */
#define PULL() \
    do { \
        if (have == 0) { \
            have = in(in_desc, &next); \
            if (have == 0) { \
                next = Z_NULL; \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

/* Get a byte of input into the bit accumulator, or return from inflateBack()
   with an error if there is no input available. */
#define PULLBYTE() \
    do { \
        PULL(); \
        have--; \
        hold += (unsigned long)(*next++) << bits; \
        bits += 8; \
    } while (0)

/* Assure that there are at least n bits in the bit accumulator.  If there is
   not enough available input to do that, then return from inflateBack() with
   an error. */
#define NEEDBITS(n) \
    do { \
        while (bits < (unsigned)(n)) \
            PULLBYTE(); \
    } while (0)

/* Return the low n bits of the bit accumulator (n <= 16) */
#define BITS(n) \
    ((unsigned)hold & ((1U << (n)) - 1))

/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
    do { \
        hold >>= (n); \
        bits -= (unsigned)(n); \
    } while (0)

/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
    do { \
        hold >>= bits & 7; \
        bits -= bits & 7; \
    } while (0)

/* Assure that some output space is available, by writing out the window
   if it's full.  If the write fails, return from inflateBack() with a
   Z_BUF_ERROR. */
#define ROOM() \
    do { \
        if (left == 0) { \
            put = window; \
            left = WSIZE; \
            wrap = 1; \
            if (out(out_desc, put, (unsigned)left)) { \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

/*
   strm provides the memory allocation functions and window buffer on input,
   and provides information on the unused input on return.  For Z_DATA_ERROR
   returns, strm will also provide an error message.

   in() and out() are the call-back input and output functions.  When
   inflateBack() needs more input, it calls in().  When inflateBack() has
   filled the window with output, or when it completes with data in the
   window, it calls out() to write out the data.  The application must not
   change the provided input until in() is called again or inflateBack()
   returns.  The application must not change the window/output buffer until
   inflateBack() returns.

   in() and out() are called with a descriptor parameter provided in the
   inflateBack() call.  This parameter can be a structure that provides the
   information required to do the read or write, as well as accumulated
   information on the input and output such as totals and check values.

   in() should return zero on failure.  out() should return non-zero on
   failure.  If either in() or out() fails, than inflateBack() returns a
   Z_BUF_ERROR.  strm->next_in can be checked for Z_NULL to see whether it
   was in() or out() that caused in the error.  Otherwise,  inflateBack()
   returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
   error, or Z_MEM_ERROR if it could not allocate memory for the state.
   inflateBack() can also return Z_STREAM_ERROR if the input parameters
   are not correct, i.e. strm is Z_NULL or the state was not initialized.
 */
int ZEXPORT inflateBack9(z_stream FAR *strm, in_func in, void FAR *in_desc,
                         out_func out, void FAR *out_desc) {
    struct inflate_state FAR *state;
    z_const unsigned char FAR *next;    /* next input */
    unsigned char FAR *put;     /* next output */
    unsigned have;              /* available input */
    unsigned long left;         /* available output */
    inflate_mode mode;          /* current inflate mode */
    int lastblock;              /* true if processing last block */
    int wrap;                   /* true if the window has wrapped */
    unsigned char FAR *window;  /* allocated sliding window, if needed */
    unsigned long hold;         /* bit buffer */
    unsigned bits;              /* bits in bit buffer */
    unsigned extra;             /* extra bits needed */
    unsigned long length;       /* literal or length of data to copy */
    unsigned long offset;       /* distance back to copy string from */
    unsigned long copy;         /* number of stored or match bytes to copy */
    unsigned char FAR *from;    /* where to copy match bytes from */
    code const FAR *lencode;    /* starting table for length/literal codes */
    code const FAR *distcode;   /* starting table for distance codes */
    unsigned lenbits;           /* index bits for lencode */
    unsigned distbits;          /* index bits for distcode */
    code here;                  /* current decoding table entry */
    code last;                  /* parent table entry */
    unsigned len;               /* length to copy for repeats, bits to drop */
    int ret;                    /* return code */
    static const unsigned short order[19] = /* permutation of code lengths */
        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
#include "inffix9.h"

    /* Check that the strm exists and that the state was initialized */
    if (strm == Z_NULL || strm->state == Z_NULL)
        return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;

    /* Reset the state */
    strm->msg = Z_NULL;
    mode = TYPE;
    lastblock = 0;
    wrap = 0;
    window = state->window;
    next = strm->next_in;
    have = next != Z_NULL ? strm->avail_in : 0;
    hold = 0;
    bits = 0;
    put = window;
    left = WSIZE;
    lencode = Z_NULL;
    distcode = Z_NULL;

    /* Inflate until end of block marked as last */
    for (;;)
        switch (mode) {
        case TYPE:
            /* determine and dispatch block type */
            if (lastblock) {
                BYTEBITS();
                mode = DONE;
                break;
            }
            NEEDBITS(3);
            lastblock = BITS(1);
            DROPBITS(1);
            switch (BITS(2)) {
            case 0:                             /* stored block */
                Tracev((stderr, "inflate:     stored block%s\n",
                        lastblock ? " (last)" : ""));
                mode = STORED;
                break;
            case 1:                             /* fixed block */
                lencode = lenfix;
                lenbits = 9;
                distcode = distfix;
                distbits = 5;
                Tracev((stderr, "inflate:     fixed codes block%s\n",
                        lastblock ? " (last)" : ""));
                mode = LEN;                     /* decode codes */
                break;
            case 2:                             /* dynamic block */
                Tracev((stderr, "inflate:     dynamic codes block%s\n",
                        lastblock ? " (last)" : ""));
                mode = TABLE;
                break;
            case 3:
                strm->msg = (char *)"invalid block type";
                mode = BAD;
            }
            DROPBITS(2);
            break;

        case STORED:
            /* get and verify stored block length */
            BYTEBITS();                         /* go to byte boundary */
            NEEDBITS(32);
            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
                strm->msg = (char *)"invalid stored block lengths";
                mode = BAD;
                break;
            }
            length = (unsigned)hold & 0xffff;
            Tracev((stderr, "inflate:       stored length %lu\n",
                    length));
            INITBITS();

            /* copy stored block from input to output */
            while (length != 0) {
                copy = length;
                PULL();
                ROOM();
                if (copy > have) copy = have;
                if (copy > left) copy = left;
                zmemcpy(put, next, copy);
                have -= copy;
                next += copy;
                left -= copy;
                put += copy;
                length -= copy;
            }
            Tracev((stderr, "inflate:       stored end\n"));
            mode = TYPE;
            break;

        case TABLE:
            /* get dynamic table entries descriptor */
            NEEDBITS(14);
            state->nlen = BITS(5) + 257;
            DROPBITS(5);
            state->ndist = BITS(5) + 1;
            DROPBITS(5);
            state->ncode = BITS(4) + 4;
            DROPBITS(4);
            if (state->nlen > 286) {
                strm->msg = (char *)"too many length symbols";
                mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       table sizes ok\n"));

            /* get code length code lengths (not a typo) */
            state->have = 0;
            while (state->have < state->ncode) {
                NEEDBITS(3);
                state->lens[order[state->have++]] = (unsigned short)BITS(3);
                DROPBITS(3);
            }
            while (state->have < 19)
                state->lens[order[state->have++]] = 0;
            state->next = state->codes;
            lencode = (code const FAR *)(state->next);
            lenbits = 7;
            ret = inflate_table9(CODES, state->lens, 19, &(state->next),
                                &(lenbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid code lengths set";
                mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       code lengths ok\n"));

            /* get length and distance code code lengths */
            state->have = 0;
            while (state->have < state->nlen + state->ndist) {
                for (;;) {
                    here = lencode[BITS(lenbits)];
                    if ((unsigned)(here.bits) <= bits) break;
                    PULLBYTE();
                }
                if (here.val < 16) {
                    NEEDBITS(here.bits);
                    DROPBITS(here.bits);
                    state->lens[state->have++] = here.val;
                }
                else {
                    if (here.val == 16) {
                        NEEDBITS(here.bits + 2);
                        DROPBITS(here.bits);
                        if (state->have == 0) {
                            strm->msg = (char *)"invalid bit length repeat";
                            mode = BAD;
                            break;
                        }
                        len = (unsigned)(state->lens[state->have - 1]);
                        copy = 3 + BITS(2);
                        DROPBITS(2);
                    }
                    else if (here.val == 17) {
                        NEEDBITS(here.bits + 3);
                        DROPBITS(here.bits);
                        len = 0;
                        copy = 3 + BITS(3);
                        DROPBITS(3);
                    }
                    else {
                        NEEDBITS(here.bits + 7);
                        DROPBITS(here.bits);
                        len = 0;
                        copy = 11 + BITS(7);
                        DROPBITS(7);
                    }
                    if (state->have + copy > state->nlen + state->ndist) {
                        strm->msg = (char *)"invalid bit length repeat";
                        mode = BAD;
                        break;
                    }
                    while (copy--)
                        state->lens[state->have++] = (unsigned short)len;
                }
            }

            /* handle error breaks in while */
            if (mode == BAD) break;

            /* check for end-of-block code (better have one) */
            if (state->lens[256] == 0) {
                strm->msg = (char *)"invalid code -- missing end-of-block";
                mode = BAD;
                break;
            }

            /* build code tables -- note: do not change the lenbits or distbits
               values here (9 and 6) without reading the comments in inftree9.h
               concerning the ENOUGH constants, which depend on those values */
            state->next = state->codes;
            lencode = (code const FAR *)(state->next);
            lenbits = 9;
            ret = inflate_table9(LENS, state->lens, state->nlen,
                            &(state->next), &(lenbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid literal/lengths set";
                mode = BAD;
                break;
            }
            distcode = (code const FAR *)(state->next);
            distbits = 6;
            ret = inflate_table9(DISTS, state->lens + state->nlen,
                            state->ndist, &(state->next), &(distbits),
                            state->work);
            if (ret) {
                strm->msg = (char *)"invalid distances set";
                mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       codes ok\n"));
            mode = LEN;

        case LEN:
            /* get a literal, length, or end-of-block code */
            for (;;) {
                here = lencode[BITS(lenbits)];
                if ((unsigned)(here.bits) <= bits) break;
                PULLBYTE();
            }
            if (here.op && (here.op & 0xf0) == 0) {
                last = here;
                for (;;) {
                    here = lencode[last.val +
                            (BITS(last.bits + last.op) >> last.bits)];
                    if ((unsigned)(last.bits + here.bits) <= bits) break;
                    PULLBYTE();
                }
                DROPBITS(last.bits);
            }
            DROPBITS(here.bits);
            length = (unsigned)here.val;

            /* process literal */
            if (here.op == 0) {
                Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
                        "inflate:         literal '%c'\n" :
                        "inflate:         literal 0x%02x\n", here.val));
                ROOM();
                *put++ = (unsigned char)(length);
                left--;
                mode = LEN;
                break;
            }

            /* process end of block */
            if (here.op & 32) {
                Tracevv((stderr, "inflate:         end of block\n"));
                mode = TYPE;
                break;
            }

            /* invalid code */
            if (here.op & 64) {
                strm->msg = (char *)"invalid literal/length code";
                mode = BAD;
                break;
            }

            /* length code -- get extra bits, if any */
            extra = (unsigned)(here.op) & 31;
            if (extra != 0) {
                NEEDBITS(extra);
                length += BITS(extra);
                DROPBITS(extra);
            }
            Tracevv((stderr, "inflate:         length %lu\n", length));

            /* get distance code */
            for (;;) {
                here = distcode[BITS(distbits)];
                if ((unsigned)(here.bits) <= bits) break;
                PULLBYTE();
            }
            if ((here.op & 0xf0) == 0) {
                last = here;
                for (;;) {
                    here = distcode[last.val +
                            (BITS(last.bits + last.op) >> last.bits)];
                    if ((unsigned)(last.bits + here.bits) <= bits) break;
                    PULLBYTE();
                }
                DROPBITS(last.bits);
            }
            DROPBITS(here.bits);
            if (here.op & 64) {
                strm->msg = (char *)"invalid distance code";
                mode = BAD;
                break;
            }
            offset = (unsigned)here.val;

            /* get distance extra bits, if any */
            extra = (unsigned)(here.op) & 15;
            if (extra != 0) {
                NEEDBITS(extra);
                offset += BITS(extra);
                DROPBITS(extra);
            }
            if (offset > WSIZE - (wrap ? 0: left)) {
                strm->msg = (char *)"invalid distance too far back";
                mode = BAD;
                break;
            }
            Tracevv((stderr, "inflate:         distance %lu\n", offset));

            /* copy match from window to output */
            do {
                ROOM();
                copy = WSIZE - offset;
                if (copy < left) {
                    from = put + copy;
                    copy = left - copy;
                }
                else {
                    from = put - offset;
                    copy = left;
                }
                if (copy > length) copy = length;
                length -= copy;
                left -= copy;
                do {
                    *put++ = *from++;
                } while (--copy);
            } while (length != 0);
            break;

        case DONE:
            /* inflate stream terminated properly -- write leftover output */
            ret = Z_STREAM_END;
            if (left < WSIZE) {
                if (out(out_desc, window, (unsigned)(WSIZE - left)))
                    ret = Z_BUF_ERROR;
            }
            goto inf_leave;

        case BAD:
            ret = Z_DATA_ERROR;
            goto inf_leave;

        default:                /* can't happen, but makes compilers happy */
            ret = Z_STREAM_ERROR;
            goto inf_leave;
        }

    /* Return unused input */
  inf_leave:
    strm->next_in = next;
    strm->avail_in = have;
    return ret;
}

int ZEXPORT inflateBack9End(z_stream FAR *strm) {
    if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
        return Z_STREAM_ERROR;
    ZFREE(strm, strm->state);
    strm->state = Z_NULL;
    Tracev((stderr, "inflate: end\n"));
    return Z_OK;
}
Added compat/zlib/contrib/infback9/infback9.h.





































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/* infback9.h -- header for using inflateBack9 functions
 * Copyright (C) 2003 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/*
 * This header file and associated patches provide a decoder for PKWare's
 * undocumented deflate64 compression method (method 9).  Use with infback9.c,
 * inftree9.h, inftree9.c, and inffix9.h.  These patches are not supported.
 * This should be compiled with zlib, since it uses zutil.h and zutil.o.
 * This code has not yet been tested on 16-bit architectures.  See the
 * comments in zlib.h for inflateBack() usage.  These functions are used
 * identically, except that there is no windowBits parameter, and a 64K
 * window must be provided.  Also if int's are 16 bits, then a zero for
 * the third parameter of the "out" function actually means 65536UL.
 * zlib.h must be included before this header file.
 */

#ifdef __cplusplus
extern "C" {
#endif

ZEXTERN int ZEXPORT inflateBack9(z_stream FAR *strm,
                                 in_func in, void FAR *in_desc,
                                 out_func out, void FAR *out_desc);
ZEXTERN int ZEXPORT inflateBack9End(z_stream FAR *strm);
ZEXTERN int ZEXPORT inflateBack9Init_(z_stream FAR *strm,
                                      unsigned char FAR *window,
                                      const char *version,
                                      int stream_size);
#define inflateBack9Init(strm, window) \
        inflateBack9Init_((strm), (window), \
        ZLIB_VERSION, sizeof(z_stream))

#ifdef __cplusplus
}
#endif
Added compat/zlib/contrib/infback9/inffix9.h.











































































































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    /* inffix9.h -- table for decoding deflate64 fixed codes
     * Generated automatically by makefixed9().
     */

    /* WARNING: this file should *not* be used by applications.
       It is part of the implementation of this library and is
       subject to change. Applications should only use zlib.h.
     */

    static const code lenfix[512] = {
        {96,7,0},{0,8,80},{0,8,16},{132,8,115},{130,7,31},{0,8,112},
        {0,8,48},{0,9,192},{128,7,10},{0,8,96},{0,8,32},{0,9,160},
        {0,8,0},{0,8,128},{0,8,64},{0,9,224},{128,7,6},{0,8,88},
        {0,8,24},{0,9,144},{131,7,59},{0,8,120},{0,8,56},{0,9,208},
        {129,7,17},{0,8,104},{0,8,40},{0,9,176},{0,8,8},{0,8,136},
        {0,8,72},{0,9,240},{128,7,4},{0,8,84},{0,8,20},{133,8,227},
        {131,7,43},{0,8,116},{0,8,52},{0,9,200},{129,7,13},{0,8,100},
        {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},
        {128,7,8},{0,8,92},{0,8,28},{0,9,152},{132,7,83},{0,8,124},
        {0,8,60},{0,9,216},{130,7,23},{0,8,108},{0,8,44},{0,9,184},
        {0,8,12},{0,8,140},{0,8,76},{0,9,248},{128,7,3},{0,8,82},
        {0,8,18},{133,8,163},{131,7,35},{0,8,114},{0,8,50},{0,9,196},
        {129,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},{0,8,130},
        {0,8,66},{0,9,228},{128,7,7},{0,8,90},{0,8,26},{0,9,148},
        {132,7,67},{0,8,122},{0,8,58},{0,9,212},{130,7,19},{0,8,106},
        {0,8,42},{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},
        {128,7,5},{0,8,86},{0,8,22},{65,8,0},{131,7,51},{0,8,118},
        {0,8,54},{0,9,204},{129,7,15},{0,8,102},{0,8,38},{0,9,172},
        {0,8,6},{0,8,134},{0,8,70},{0,9,236},{128,7,9},{0,8,94},
        {0,8,30},{0,9,156},{132,7,99},{0,8,126},{0,8,62},{0,9,220},
        {130,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
        {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{133,8,131},
        {130,7,31},{0,8,113},{0,8,49},{0,9,194},{128,7,10},{0,8,97},
        {0,8,33},{0,9,162},{0,8,1},{0,8,129},{0,8,65},{0,9,226},
        {128,7,6},{0,8,89},{0,8,25},{0,9,146},{131,7,59},{0,8,121},
        {0,8,57},{0,9,210},{129,7,17},{0,8,105},{0,8,41},{0,9,178},
        {0,8,9},{0,8,137},{0,8,73},{0,9,242},{128,7,4},{0,8,85},
        {0,8,21},{144,8,3},{131,7,43},{0,8,117},{0,8,53},{0,9,202},
        {129,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},
        {0,8,69},{0,9,234},{128,7,8},{0,8,93},{0,8,29},{0,9,154},
        {132,7,83},{0,8,125},{0,8,61},{0,9,218},{130,7,23},{0,8,109},
        {0,8,45},{0,9,186},{0,8,13},{0,8,141},{0,8,77},{0,9,250},
        {128,7,3},{0,8,83},{0,8,19},{133,8,195},{131,7,35},{0,8,115},
        {0,8,51},{0,9,198},{129,7,11},{0,8,99},{0,8,35},{0,9,166},
        {0,8,3},{0,8,131},{0,8,67},{0,9,230},{128,7,7},{0,8,91},
        {0,8,27},{0,9,150},{132,7,67},{0,8,123},{0,8,59},{0,9,214},
        {130,7,19},{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},
        {0,8,75},{0,9,246},{128,7,5},{0,8,87},{0,8,23},{77,8,0},
        {131,7,51},{0,8,119},{0,8,55},{0,9,206},{129,7,15},{0,8,103},
        {0,8,39},{0,9,174},{0,8,7},{0,8,135},{0,8,71},{0,9,238},
        {128,7,9},{0,8,95},{0,8,31},{0,9,158},{132,7,99},{0,8,127},
        {0,8,63},{0,9,222},{130,7,27},{0,8,111},{0,8,47},{0,9,190},
        {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},
        {0,8,16},{132,8,115},{130,7,31},{0,8,112},{0,8,48},{0,9,193},
        {128,7,10},{0,8,96},{0,8,32},{0,9,161},{0,8,0},{0,8,128},
        {0,8,64},{0,9,225},{128,7,6},{0,8,88},{0,8,24},{0,9,145},
        {131,7,59},{0,8,120},{0,8,56},{0,9,209},{129,7,17},{0,8,104},
        {0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},{0,9,241},
        {128,7,4},{0,8,84},{0,8,20},{133,8,227},{131,7,43},{0,8,116},
        {0,8,52},{0,9,201},{129,7,13},{0,8,100},{0,8,36},{0,9,169},
        {0,8,4},{0,8,132},{0,8,68},{0,9,233},{128,7,8},{0,8,92},
        {0,8,28},{0,9,153},{132,7,83},{0,8,124},{0,8,60},{0,9,217},
        {130,7,23},{0,8,108},{0,8,44},{0,9,185},{0,8,12},{0,8,140},
        {0,8,76},{0,9,249},{128,7,3},{0,8,82},{0,8,18},{133,8,163},
        {131,7,35},{0,8,114},{0,8,50},{0,9,197},{129,7,11},{0,8,98},
        {0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
        {128,7,7},{0,8,90},{0,8,26},{0,9,149},{132,7,67},{0,8,122},
        {0,8,58},{0,9,213},{130,7,19},{0,8,106},{0,8,42},{0,9,181},
        {0,8,10},{0,8,138},{0,8,74},{0,9,245},{128,7,5},{0,8,86},
        {0,8,22},{65,8,0},{131,7,51},{0,8,118},{0,8,54},{0,9,205},
        {129,7,15},{0,8,102},{0,8,38},{0,9,173},{0,8,6},{0,8,134},
        {0,8,70},{0,9,237},{128,7,9},{0,8,94},{0,8,30},{0,9,157},
        {132,7,99},{0,8,126},{0,8,62},{0,9,221},{130,7,27},{0,8,110},
        {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},
        {96,7,0},{0,8,81},{0,8,17},{133,8,131},{130,7,31},{0,8,113},
        {0,8,49},{0,9,195},{128,7,10},{0,8,97},{0,8,33},{0,9,163},
        {0,8,1},{0,8,129},{0,8,65},{0,9,227},{128,7,6},{0,8,89},
        {0,8,25},{0,9,147},{131,7,59},{0,8,121},{0,8,57},{0,9,211},
        {129,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},{0,8,137},
        {0,8,73},{0,9,243},{128,7,4},{0,8,85},{0,8,21},{144,8,3},
        {131,7,43},{0,8,117},{0,8,53},{0,9,203},{129,7,13},{0,8,101},
        {0,8,37},{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},
        {128,7,8},{0,8,93},{0,8,29},{0,9,155},{132,7,83},{0,8,125},
        {0,8,61},{0,9,219},{130,7,23},{0,8,109},{0,8,45},{0,9,187},
        {0,8,13},{0,8,141},{0,8,77},{0,9,251},{128,7,3},{0,8,83},
        {0,8,19},{133,8,195},{131,7,35},{0,8,115},{0,8,51},{0,9,199},
        {129,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
        {0,8,67},{0,9,231},{128,7,7},{0,8,91},{0,8,27},{0,9,151},
        {132,7,67},{0,8,123},{0,8,59},{0,9,215},{130,7,19},{0,8,107},
        {0,8,43},{0,9,183},{0,8,11},{0,8,139},{0,8,75},{0,9,247},
        {128,7,5},{0,8,87},{0,8,23},{77,8,0},{131,7,51},{0,8,119},
        {0,8,55},{0,9,207},{129,7,15},{0,8,103},{0,8,39},{0,9,175},
        {0,8,7},{0,8,135},{0,8,71},{0,9,239},{128,7,9},{0,8,95},
        {0,8,31},{0,9,159},{132,7,99},{0,8,127},{0,8,63},{0,9,223},
        {130,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},
        {0,8,79},{0,9,255}
    };

    static const code distfix[32] = {
        {128,5,1},{135,5,257},{131,5,17},{139,5,4097},{129,5,5},
        {137,5,1025},{133,5,65},{141,5,16385},{128,5,3},{136,5,513},
        {132,5,33},{140,5,8193},{130,5,9},{138,5,2049},{134,5,129},
        {142,5,32769},{128,5,2},{135,5,385},{131,5,25},{139,5,6145},
        {129,5,7},{137,5,1537},{133,5,97},{141,5,24577},{128,5,4},
        {136,5,769},{132,5,49},{140,5,12289},{130,5,13},{138,5,3073},
        {134,5,193},{142,5,49153}
    };
Added compat/zlib/contrib/infback9/inflate9.h.















































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/* inflate9.h -- internal inflate state definition
 * Copyright (C) 1995-2003 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* Possible inflate modes between inflate() calls */
typedef enum {
        TYPE,       /* i: waiting for type bits, including last-flag bit */
        STORED,     /* i: waiting for stored size (length and complement) */
        TABLE,      /* i: waiting for dynamic block table lengths */
            LEN,        /* i: waiting for length/lit code */
    DONE,       /* finished check, done -- remain here until reset */
    BAD         /* got a data error -- remain here until reset */
} inflate_mode;

/*
    State transitions between above modes -

    (most modes can go to the BAD mode -- not shown for clarity)

    Read deflate blocks:
            TYPE -> STORED or TABLE or LEN or DONE
            STORED -> TYPE
            TABLE -> LENLENS -> CODELENS -> LEN
    Read deflate codes:
                LEN -> LEN or TYPE
 */

/* state maintained between inflate() calls.  Approximately 7K bytes. */
struct inflate_state {
        /* sliding window */
    unsigned char FAR *window;  /* allocated sliding window, if needed */
        /* dynamic table building */
    unsigned ncode;             /* number of code length code lengths */
    unsigned nlen;              /* number of length code lengths */
    unsigned ndist;             /* number of distance code lengths */
    unsigned have;              /* number of code lengths in lens[] */
    code FAR *next;             /* next available space in codes[] */
    unsigned short lens[320];   /* temporary storage for code lengths */
    unsigned short work[288];   /* work area for code table building */
    code codes[ENOUGH];         /* space for code tables */
};
Added compat/zlib/contrib/infback9/inftree9.c.































































































































































































































































































































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/* inftree9.c -- generate Huffman trees for efficient decoding
 * Copyright (C) 1995-2024 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "zutil.h"
#include "inftree9.h"

#define MAXBITS 15

const char inflate9_copyright[] =
   " inflate9 1.3.1 Copyright 1995-2024 Mark Adler ";
/*
  If you use the zlib library in a product, an acknowledgment is welcome
  in the documentation of your product. If for some reason you cannot
  include such an acknowledgment, I would appreciate that you keep this
  copyright string in the executable of your product.
 */

/*
   Build a set of tables to decode the provided canonical Huffman code.
   The code lengths are lens[0..codes-1].  The result starts at *table,
   whose indices are 0..2^bits-1.  work is a writable array of at least
   lens shorts, which is used as a work area.  type is the type of code
   to be generated, CODES, LENS, or DISTS.  On return, zero is success,
   -1 is an invalid code, and +1 means that ENOUGH isn't enough.  table
   on return points to the next available entry's address.  bits is the
   requested root table index bits, and on return it is the actual root
   table index bits.  It will differ if the request is greater than the
   longest code or if it is less than the shortest code.
 */
int inflate_table9(codetype type, unsigned short FAR *lens, unsigned codes,
                   code FAR * FAR *table, unsigned FAR *bits,
                   unsigned short FAR *work) {
    unsigned len;               /* a code's length in bits */
    unsigned sym;               /* index of code symbols */
    unsigned min, max;          /* minimum and maximum code lengths */
    unsigned root;              /* number of index bits for root table */
    unsigned curr;              /* number of index bits for current table */
    unsigned drop;              /* code bits to drop for sub-table */
    int left;                   /* number of prefix codes available */
    unsigned used;              /* code entries in table used */
    unsigned huff;              /* Huffman code */
    unsigned incr;              /* for incrementing code, index */
    unsigned fill;              /* index for replicating entries */
    unsigned low;               /* low bits for current root entry */
    unsigned mask;              /* mask for low root bits */
    code this;                  /* table entry for duplication */
    code FAR *next;             /* next available space in table */
    const unsigned short FAR *base;     /* base value table to use */
    const unsigned short FAR *extra;    /* extra bits table to use */
    int end;                    /* use base and extra for symbol > end */
    unsigned short count[MAXBITS+1];    /* number of codes of each length */
    unsigned short offs[MAXBITS+1];     /* offsets in table for each length */
    static const unsigned short lbase[31] = { /* Length codes 257..285 base */
        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17,
        19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115,
        131, 163, 195, 227, 3, 0, 0};
    static const unsigned short lext[31] = { /* Length codes 257..285 extra */
        128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
        130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
        133, 133, 133, 133, 144, 203, 77};
    static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
        65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
        4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153};
    static const unsigned short dext[32] = { /* Distance codes 0..31 extra */
        128, 128, 128, 128, 129, 129, 130, 130, 131, 131, 132, 132,
        133, 133, 134, 134, 135, 135, 136, 136, 137, 137, 138, 138,
        139, 139, 140, 140, 141, 141, 142, 142};

    /*
       Process a set of code lengths to create a canonical Huffman code.  The
       code lengths are lens[0..codes-1].  Each length corresponds to the
       symbols 0..codes-1.  The Huffman code is generated by first sorting the
       symbols by length from short to long, and retaining the symbol order
       for codes with equal lengths.  Then the code starts with all zero bits
       for the first code of the shortest length, and the codes are integer
       increments for the same length, and zeros are appended as the length
       increases.  For the deflate format, these bits are stored backwards
       from their more natural integer increment ordering, and so when the
       decoding tables are built in the large loop below, the integer codes
       are incremented backwards.

       This routine assumes, but does not check, that all of the entries in
       lens[] are in the range 0..MAXBITS.  The caller must assure this.
       1..MAXBITS is interpreted as that code length.  zero means that that
       symbol does not occur in this code.

       The codes are sorted by computing a count of codes for each length,
       creating from that a table of starting indices for each length in the
       sorted table, and then entering the symbols in order in the sorted
       table.  The sorted table is work[], with that space being provided by
       the caller.

       The length counts are used for other purposes as well, i.e. finding
       the minimum and maximum length codes, determining if there are any
       codes at all, checking for a valid set of lengths, and looking ahead
       at length counts to determine sub-table sizes when building the
       decoding tables.
     */

    /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
    for (len = 0; len <= MAXBITS; len++)
        count[len] = 0;
    for (sym = 0; sym < codes; sym++)
        count[lens[sym]]++;

    /* bound code lengths, force root to be within code lengths */
    root = *bits;
    for (max = MAXBITS; max >= 1; max--)
        if (count[max] != 0) break;
    if (root > max) root = max;
    if (max == 0) return -1;            /* no codes! */
    for (min = 1; min <= MAXBITS; min++)
        if (count[min] != 0) break;
    if (root < min) root = min;

    /* check for an over-subscribed or incomplete set of lengths */
    left = 1;
    for (len = 1; len <= MAXBITS; len++) {
        left <<= 1;
        left -= count[len];
        if (left < 0) return -1;        /* over-subscribed */
    }
    if (left > 0 && (type == CODES || max != 1))
        return -1;                      /* incomplete set */

    /* generate offsets into symbol table for each length for sorting */
    offs[1] = 0;
    for (len = 1; len < MAXBITS; len++)
        offs[len + 1] = offs[len] + count[len];

    /* sort symbols by length, by symbol order within each length */
    for (sym = 0; sym < codes; sym++)
        if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;

    /*
       Create and fill in decoding tables.  In this loop, the table being
       filled is at next and has curr index bits.  The code being used is huff
       with length len.  That code is converted to an index by dropping drop
       bits off of the bottom.  For codes where len is less than drop + curr,
       those top drop + curr - len bits are incremented through all values to
       fill the table with replicated entries.

       root is the number of index bits for the root table.  When len exceeds
       root, sub-tables are created pointed to by the root entry with an index
       of the low root bits of huff.  This is saved in low to check for when a
       new sub-table should be started.  drop is zero when the root table is
       being filled, and drop is root when sub-tables are being filled.

       When a new sub-table is needed, it is necessary to look ahead in the
       code lengths to determine what size sub-table is needed.  The length
       counts are used for this, and so count[] is decremented as codes are
       entered in the tables.

       used keeps track of how many table entries have been allocated from the
       provided *table space.  It is checked for LENS and DIST tables against
       the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
       the initial root table size constants.  See the comments in inftree9.h
       for more information.

       sym increments through all symbols, and the loop terminates when
       all codes of length max, i.e. all codes, have been processed.  This
       routine permits incomplete codes, so another loop after this one fills
       in the rest of the decoding tables with invalid code markers.
     */

    /* set up for code type */
    switch (type) {
    case CODES:
        base = extra = work;    /* dummy value--not used */
        end = 19;
        break;
    case LENS:
        base = lbase;
        base -= 257;
        extra = lext;
        extra -= 257;
        end = 256;
        break;
    default:            /* DISTS */
        base = dbase;
        extra = dext;
        end = -1;
    }

    /* initialize state for loop */
    huff = 0;                   /* starting code */
    sym = 0;                    /* starting code symbol */
    len = min;                  /* starting code length */
    next = *table;              /* current table to fill in */
    curr = root;                /* current table index bits */
    drop = 0;                   /* current bits to drop from code for index */
    low = (unsigned)(-1);       /* trigger new sub-table when len > root */
    used = 1U << root;          /* use root table entries */
    mask = used - 1;            /* mask for comparing low */

    /* check available table space */
    if ((type == LENS && used >= ENOUGH_LENS) ||
        (type == DISTS && used >= ENOUGH_DISTS))
        return 1;

    /* process all codes and make table entries */
    for (;;) {
        /* create table entry */
        this.bits = (unsigned char)(len - drop);
        if ((int)(work[sym]) < end) {
            this.op = (unsigned char)0;
            this.val = work[sym];
        }
        else if ((int)(work[sym]) > end) {
            this.op = (unsigned char)(extra[work[sym]]);
            this.val = base[work[sym]];
        }
        else {
            this.op = (unsigned char)(32 + 64);         /* end of block */
            this.val = 0;
        }

        /* replicate for those indices with low len bits equal to huff */
        incr = 1U << (len - drop);
        fill = 1U << curr;
        do {
            fill -= incr;
            next[(huff >> drop) + fill] = this;
        } while (fill != 0);

        /* backwards increment the len-bit code huff */
        incr = 1U << (len - 1);
        while (huff & incr)
            incr >>= 1;
        if (incr != 0) {
            huff &= incr - 1;
            huff += incr;
        }
        else
            huff = 0;

        /* go to next symbol, update count, len */
        sym++;
        if (--(count[len]) == 0) {
            if (len == max) break;
            len = lens[work[sym]];
        }

        /* create new sub-table if needed */
        if (len > root && (huff & mask) != low) {
            /* if first time, transition to sub-tables */
            if (drop == 0)
                drop = root;

            /* increment past last table */
            next += 1U << curr;

            /* determine length of next table */
            curr = len - drop;
            left = (int)(1 << curr);
            while (curr + drop < max) {
                left -= count[curr + drop];
                if (left <= 0) break;
                curr++;
                left <<= 1;
            }

            /* check for enough space */
            used += 1U << curr;
            if ((type == LENS && used >= ENOUGH_LENS) ||
                (type == DISTS && used >= ENOUGH_DISTS))
                return 1;

            /* point entry in root table to sub-table */
            low = huff & mask;
            (*table)[low].op = (unsigned char)curr;
            (*table)[low].bits = (unsigned char)root;
            (*table)[low].val = (unsigned short)(next - *table);
        }
    }

    /*
       Fill in rest of table for incomplete codes.  This loop is similar to the
       loop above in incrementing huff for table indices.  It is assumed that
       len is equal to curr + drop, so there is no loop needed to increment
       through high index bits.  When the current sub-table is filled, the loop
       drops back to the root table to fill in any remaining entries there.
     */
    this.op = (unsigned char)64;                /* invalid code marker */
    this.bits = (unsigned char)(len - drop);
    this.val = (unsigned short)0;
    while (huff != 0) {
        /* when done with sub-table, drop back to root table */
        if (drop != 0 && (huff & mask) != low) {
            drop = 0;
            len = root;
            next = *table;
            curr = root;
            this.bits = (unsigned char)len;
        }

        /* put invalid code marker in table */
        next[huff >> drop] = this;

        /* backwards increment the len-bit code huff */
        incr = 1U << (len - 1);
        while (huff & incr)
            incr >>= 1;
        if (incr != 0) {
            huff &= incr - 1;
            huff += incr;
        }
        else
            huff = 0;
    }

    /* set return parameters */
    *table += used;
    *bits = root;
    return 0;
}
Added compat/zlib/contrib/infback9/inftree9.h.





























































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/* inftree9.h -- header to use inftree9.c
 * Copyright (C) 1995-2008 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* Structure for decoding tables.  Each entry provides either the
   information needed to do the operation requested by the code that
   indexed that table entry, or it provides a pointer to another
   table that indexes more bits of the code.  op indicates whether
   the entry is a pointer to another table, a literal, a length or
   distance, an end-of-block, or an invalid code.  For a table
   pointer, the low four bits of op is the number of index bits of
   that table.  For a length or distance, the low four bits of op
   is the number of extra bits to get after the code.  bits is
   the number of bits in this code or part of the code to drop off
   of the bit buffer.  val is the actual byte to output in the case
   of a literal, the base length or distance, or the offset from
   the current table to the next table.  Each entry is four bytes. */
typedef struct {
    unsigned char op;           /* operation, extra bits, table bits */
    unsigned char bits;         /* bits in this part of the code */
    unsigned short val;         /* offset in table or code value */
} code;

/* op values as set by inflate_table():
    00000000 - literal
    0000tttt - table link, tttt != 0 is the number of table index bits
    100eeeee - length or distance, eeee is the number of extra bits
    01100000 - end of block
    01000000 - invalid code
 */

/* Maximum size of the dynamic table.  The maximum number of code structures is
   1446, which is the sum of 852 for literal/length codes and 594 for distance
   codes.  These values were found by exhaustive searches using the program
   examples/enough.c found in the zlib distribution.  The arguments to that
   program are the number of symbols, the initial root table size, and the
   maximum bit length of a code.  "enough 286 9 15" for literal/length codes
   returns 852, and "enough 32 6 15" for distance codes returns 594. The
   initial root table size (9 or 6) is found in the fifth argument of the
   inflate_table() calls in infback9.c.  If the root table size is changed,
   then these maximum sizes would be need to be recalculated and updated. */
#define ENOUGH_LENS 852
#define ENOUGH_DISTS 594
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)

/* Type of code to build for inflate_table9() */
typedef enum {
    CODES,
    LENS,
    DISTS
} codetype;

extern int inflate_table9(codetype type, unsigned short FAR *lens,
                          unsigned codes, code FAR * FAR *table,
                          unsigned FAR *bits, unsigned short FAR *work);
Added compat/zlib/contrib/iostream/test.cpp.
























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#include "zfstream.h"

int main() {

  // Construct a stream object with this filebuffer.  Anything sent
  // to this stream will go to standard out.
  gzofstream os( 1, ios::out );

  // This text is getting compressed and sent to stdout.
  // To prove this, run 'test | zcat'.
  os << "Hello, Mommy" << endl;

  os << setcompressionlevel( Z_NO_COMPRESSION );
  os << "hello, hello, hi, ho!" << endl;

  setcompressionlevel( os, Z_DEFAULT_COMPRESSION )
    << "I'm compressing again" << endl;

  os.close();

  return 0;

}
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#include "zfstream.h"

gzfilebuf::gzfilebuf() :
  file(NULL),
  mode(0),
  own_file_descriptor(0)
{ }

gzfilebuf::~gzfilebuf() {

  sync();
  if ( own_file_descriptor )
    close();

}

gzfilebuf *gzfilebuf::open( const char *name,
                            int io_mode ) {

  if ( is_open() )
    return NULL;

  char char_mode[10];
  char *p = char_mode;

  if ( io_mode & ios::in ) {
    mode = ios::in;
    *p++ = 'r';
  } else if ( io_mode & ios::app ) {
    mode = ios::app;
    *p++ = 'a';
  } else {
    mode = ios::out;
    *p++ = 'w';
  }

  if ( io_mode & ios::binary ) {
    mode |= ios::binary;
    *p++ = 'b';
  }

  // Hard code the compression level
  if ( io_mode & (ios::out|ios::app )) {
    *p++ = '9';
  }

  // Put the end-of-string indicator
  *p = '\0';

  if ( (file = gzopen(name, char_mode)) == NULL )
    return NULL;

  own_file_descriptor = 1;

  return this;

}

gzfilebuf *gzfilebuf::attach( int file_descriptor,
                              int io_mode ) {

  if ( is_open() )
    return NULL;

  char char_mode[10];
  char *p = char_mode;

  if ( io_mode & ios::in ) {
    mode = ios::in;
    *p++ = 'r';
  } else if ( io_mode & ios::app ) {
    mode = ios::app;
    *p++ = 'a';
  } else {
    mode = ios::out;
    *p++ = 'w';
  }

  if ( io_mode & ios::binary ) {
    mode |= ios::binary;
    *p++ = 'b';
  }

  // Hard code the compression level
  if ( io_mode & (ios::out|ios::app )) {
    *p++ = '9';
  }

  // Put the end-of-string indicator
  *p = '\0';

  if ( (file = gzdopen(file_descriptor, char_mode)) == NULL )
    return NULL;

  own_file_descriptor = 0;

  return this;

}

gzfilebuf *gzfilebuf::close() {

  if ( is_open() ) {

    sync();
    gzclose( file );
    file = NULL;

  }

  return this;

}

int gzfilebuf::setcompressionlevel( int comp_level ) {

  return gzsetparams(file, comp_level, -2);

}

int gzfilebuf::setcompressionstrategy( int comp_strategy ) {

  return gzsetparams(file, -2, comp_strategy);

}


streampos gzfilebuf::seekoff( streamoff off, ios::seek_dir dir, int which ) {

  return streampos(EOF);

}

int gzfilebuf::underflow() {

  // If the file hasn't been opened for reading, error.
  if ( !is_open() || !(mode & ios::in) )
    return EOF;

  // if a buffer doesn't exists, allocate one.
  if ( !base() ) {

    if ( (allocate()) == EOF )
      return EOF;
    setp(0,0);

  } else {

    if ( in_avail() )
      return (unsigned char) *gptr();

    if ( out_waiting() ) {
      if ( flushbuf() == EOF )
        return EOF;
    }

  }

  // Attempt to fill the buffer.

  int result = fillbuf();
  if ( result == EOF ) {
    // disable get area
    setg(0,0,0);
    return EOF;
  }

  return (unsigned char) *gptr();

}

int gzfilebuf::overflow( int c ) {

  if ( !is_open() || !(mode & ios::out) )
    return EOF;

  if ( !base() ) {
    if ( allocate() == EOF )
      return EOF;
    setg(0,0,0);
  } else {
    if (in_avail()) {
        return EOF;
    }
    if (out_waiting()) {
      if (flushbuf() == EOF)
        return EOF;
    }
  }

  int bl = blen();
  setp( base(), base() + bl);

  if ( c != EOF ) {

    *pptr() = c;
    pbump(1);

  }

  return 0;

}

int gzfilebuf::sync() {

  if ( !is_open() )
    return EOF;

  if ( out_waiting() )
    return flushbuf();

  return 0;

}

int gzfilebuf::flushbuf() {

  int n;
  char *q;

  q = pbase();
  n = pptr() - q;

  if ( gzwrite( file, q, n) < n )
    return EOF;

  setp(0,0);

  return 0;

}

int gzfilebuf::fillbuf() {

  int required;
  char *p;

  p = base();

  required = blen();

  int t = gzread( file, p, required );

  if ( t <= 0) return EOF;

  setg( base(), base(), base()+t);

  return t;

}

gzfilestream_common::gzfilestream_common() :
  ios( gzfilestream_common::rdbuf() )
{ }

gzfilestream_common::~gzfilestream_common()
{ }

void gzfilestream_common::attach( int fd, int io_mode ) {

  if ( !buffer.attach( fd, io_mode) )
    clear( ios::failbit | ios::badbit );
  else
    clear();

}

void gzfilestream_common::open( const char *name, int io_mode ) {

  if ( !buffer.open( name, io_mode ) )
    clear( ios::failbit | ios::badbit );
  else
    clear();

}

void gzfilestream_common::close() {

  if ( !buffer.close() )
    clear( ios::failbit | ios::badbit );

}

gzfilebuf *gzfilestream_common::rdbuf()
{
  return &buffer;
}

gzifstream::gzifstream() :
  ios( gzfilestream_common::rdbuf() )
{
  clear( ios::badbit );
}

gzifstream::gzifstream( const char *name, int io_mode ) :
  ios( gzfilestream_common::rdbuf() )
{
  gzfilestream_common::open( name, io_mode );
}

gzifstream::gzifstream( int fd, int io_mode ) :
  ios( gzfilestream_common::rdbuf() )
{
  gzfilestream_common::attach( fd, io_mode );
}

gzifstream::~gzifstream() { }

gzofstream::gzofstream() :
  ios( gzfilestream_common::rdbuf() )
{
  clear( ios::badbit );
}

gzofstream::gzofstream( const char *name, int io_mode ) :
  ios( gzfilestream_common::rdbuf() )
{
  gzfilestream_common::open( name, io_mode );
}

gzofstream::gzofstream( int fd, int io_mode ) :
  ios( gzfilestream_common::rdbuf() )
{
  gzfilestream_common::attach( fd, io_mode );
}

gzofstream::~gzofstream() { }
Added compat/zlib/contrib/iostream/zfstream.h.
































































































































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#ifndef zfstream_h
#define zfstream_h

#include <fstream.h>
#include "zlib.h"

class gzfilebuf : public streambuf {

public:

  gzfilebuf( );
  virtual ~gzfilebuf();

  gzfilebuf *open( const char *name, int io_mode );
  gzfilebuf *attach( int file_descriptor, int io_mode );
  gzfilebuf *close();

  int setcompressionlevel( int comp_level );
  int setcompressionstrategy( int comp_strategy );

  inline int is_open() const { return (file !=NULL); }

  virtual streampos seekoff( streamoff, ios::seek_dir, int );

  virtual int sync();

protected:

  virtual int underflow();
  virtual int overflow( int = EOF );

private:

  gzFile file;
  short mode;
  short own_file_descriptor;

  int flushbuf();
  int fillbuf();

};

class gzfilestream_common : virtual public ios {

  friend class gzifstream;
  friend class gzofstream;
  friend gzofstream &setcompressionlevel( gzofstream &, int );
  friend gzofstream &setcompressionstrategy( gzofstream &, int );

public:
  virtual ~gzfilestream_common();

  void attach( int fd, int io_mode );
  void open( const char *name, int io_mode );
  void close();

protected:
  gzfilestream_common();

private:
  gzfilebuf *rdbuf();

  gzfilebuf buffer;

};

class gzifstream : public gzfilestream_common, public istream {

public:

  gzifstream();
  gzifstream( const char *name, int io_mode = ios::in );
  gzifstream( int fd, int io_mode = ios::in );

  virtual ~gzifstream();

};

class gzofstream : public gzfilestream_common, public ostream {

public:

  gzofstream();
  gzofstream( const char *name, int io_mode = ios::out );
  gzofstream( int fd, int io_mode = ios::out );

  virtual ~gzofstream();

};

template<class T> class gzomanip {
  friend gzofstream &operator<<(gzofstream &, const gzomanip<T> &);
public:
  gzomanip(gzofstream &(*f)(gzofstream &, T), T v) : func(f), val(v) { }
private:
  gzofstream &(*func)(gzofstream &, T);
  T val;
};

template<class T> gzofstream &operator<<(gzofstream &s, const gzomanip<T> &m)
{
  return (*m.func)(s, m.val);
}

inline gzofstream &setcompressionlevel( gzofstream &s, int l )
{
  (s.rdbuf())->setcompressionlevel(l);
  return s;
}

inline gzofstream &setcompressionstrategy( gzofstream &s, int l )
{
  (s.rdbuf())->setcompressionstrategy(l);
  return s;
}

inline gzomanip<int> setcompressionlevel(int l)
{
  return gzomanip<int>(&setcompressionlevel,l);
}

inline gzomanip<int> setcompressionstrategy(int l)
{
  return gzomanip<int>(&setcompressionstrategy,l);
}

#endif
Added compat/zlib/contrib/iostream2/zstream.h.



















































































































































































































































































































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/*
 *
 * Copyright (c) 1997
 * Christian Michelsen Research AS
 * Advanced Computing
 * Fantoftvegen 38, 5036 BERGEN, Norway
 * http://www.cmr.no
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Christian Michelsen Research AS makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 */

#ifndef ZSTREAM__H
#define ZSTREAM__H

/*
 * zstream.h - C++ interface to the 'zlib' general purpose compression library
 * $Id: zstream.h 1.1 1997-06-25 12:00:56+02 tyge Exp tyge $
 */

#include <strstream.h>
#include <string.h>
#include <stdio.h>
#include "zlib.h"

#if defined(_WIN32)
#   include <fcntl.h>
#   include <io.h>
#   define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#   define SET_BINARY_MODE(file)
#endif

class zstringlen {
public:
    zstringlen(class izstream&);
    zstringlen(class ozstream&, const char*);
    size_t value() const { return val.word; }
private:
    struct Val { unsigned char byte; size_t word; } val;
};

//  ----------------------------- izstream -----------------------------

class izstream
{
    public:
        izstream() : m_fp(0) {}
        izstream(FILE* fp) : m_fp(0) { open(fp); }
        izstream(const char* name) : m_fp(0) { open(name); }
        ~izstream() { close(); }

        /* Opens a gzip (.gz) file for reading.
         * open() can be used to read a file which is not in gzip format;
         * in this case read() will directly read from the file without
         * decompression. errno can be checked to distinguish two error
         * cases (if errno is zero, the zlib error is Z_MEM_ERROR).
         */
        void open(const char* name) {
            if (m_fp) close();
            m_fp = ::gzopen(name, "rb");
        }

        void open(FILE* fp) {
            SET_BINARY_MODE(fp);
            if (m_fp) close();
            m_fp = ::gzdopen(fileno(fp), "rb");
        }

        /* Flushes all pending input if necessary, closes the compressed file
         * and deallocates all the (de)compression state. The return value is
         * the zlib error number (see function error() below).
         */
        int close() {
            int r = ::gzclose(m_fp);
            m_fp = 0; return r;
        }

        /* Binary read the given number of bytes from the compressed file.
         */
        int read(void* buf, size_t len) {
            return ::gzread(m_fp, buf, len);
        }

        /* Returns the error message for the last error which occurred on the
         * given compressed file. errnum is set to zlib error number. If an
         * error occurred in the file system and not in the compression library,
         * errnum is set to Z_ERRNO and the application may consult errno
         * to get the exact error code.
         */
        const char* error(int* errnum) {
            return ::gzerror(m_fp, errnum);
        }

        gzFile fp() { return m_fp; }

    private:
        gzFile m_fp;
};

/*
 * Binary read the given (array of) object(s) from the compressed file.
 * If the input file was not in gzip format, read() copies the objects number
 * of bytes into the buffer.
 * returns the number of uncompressed bytes actually read
 * (0 for end of file, -1 for error).
 */
template <class T, class Items>
inline int read(izstream& zs, T* x, Items items) {
    return ::gzread(zs.fp(), x, items*sizeof(T));
}

/*
 * Binary input with the '>' operator.
 */
template <class T>
inline izstream& operator>(izstream& zs, T& x) {
    ::gzread(zs.fp(), &x, sizeof(T));
    return zs;
}


inline zstringlen::zstringlen(izstream& zs) {
    zs > val.byte;
    if (val.byte == 255) zs > val.word;
    else val.word = val.byte;
}

/*
 * Read length of string + the string with the '>' operator.
 */
inline izstream& operator>(izstream& zs, char* x) {
    zstringlen len(zs);
    ::gzread(zs.fp(), x, len.value());
    x[len.value()] = '\0';
    return zs;
}

inline char* read_string(izstream& zs) {
    zstringlen len(zs);
    char* x = new char[len.value()+1];
    ::gzread(zs.fp(), x, len.value());
    x[len.value()] = '\0';
    return x;
}

// ----------------------------- ozstream -----------------------------

class ozstream
{
    public:
        ozstream() : m_fp(0), m_os(0) {
        }
        ozstream(FILE* fp, int level = Z_DEFAULT_COMPRESSION)
            : m_fp(0), m_os(0) {
            open(fp, level);
        }
        ozstream(const char* name, int level = Z_DEFAULT_COMPRESSION)
            : m_fp(0), m_os(0) {
            open(name, level);
        }
        ~ozstream() {
            close();
        }

        /* Opens a gzip (.gz) file for writing.
         * The compression level parameter should be in 0..9
         * errno can be checked to distinguish two error cases
         * (if errno is zero, the zlib error is Z_MEM_ERROR).
         */
        void open(const char* name, int level = Z_DEFAULT_COMPRESSION) {
            char mode[4] = "wb\0";
            if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
            if (m_fp) close();
            m_fp = ::gzopen(name, mode);
        }

        /* open from a FILE pointer.
         */
        void open(FILE* fp, int level = Z_DEFAULT_COMPRESSION) {
            SET_BINARY_MODE(fp);
            char mode[4] = "wb\0";
            if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
            if (m_fp) close();
            m_fp = ::gzdopen(fileno(fp), mode);
        }

        /* Flushes all pending output if necessary, closes the compressed file
         * and deallocates all the (de)compression state. The return value is
         * the zlib error number (see function error() below).
         */
        int close() {
            if (m_os) {
                ::gzwrite(m_fp, m_os->str(), m_os->pcount());
                delete[] m_os->str(); delete m_os; m_os = 0;
            }
            int r = ::gzclose(m_fp); m_fp = 0; return r;
        }

        /* Binary write the given number of bytes into the compressed file.
         */
        int write(const void* buf, size_t len) {
            return ::gzwrite(m_fp, (voidp) buf, len);
        }

        /* Flushes all pending output into the compressed file. The parameter
         * _flush is as in the deflate() function. The return value is the zlib
         * error number (see function gzerror below). flush() returns Z_OK if
         * the flush_ parameter is Z_FINISH and all output could be flushed.
         * flush() should be called only when strictly necessary because it can
         * degrade compression.
         */
        int flush(int _flush) {
            os_flush();
            return ::gzflush(m_fp, _flush);
        }

        /* Returns the error message for the last error which occurred on the
         * given compressed file. errnum is set to zlib error number. If an
         * error occurred in the file system and not in the compression library,
         * errnum is set to Z_ERRNO and the application may consult errno
         * to get the exact error code.
         */
        const char* error(int* errnum) {
            return ::gzerror(m_fp, errnum);
        }

        gzFile fp() { return m_fp; }

        ostream& os() {
            if (m_os == 0) m_os = new ostrstream;
            return *m_os;
        }

        void os_flush() {
            if (m_os && m_os->pcount()>0) {
                ostrstream* oss = new ostrstream;
                oss->fill(m_os->fill());
                oss->flags(m_os->flags());
                oss->precision(m_os->precision());
                oss->width(m_os->width());
                ::gzwrite(m_fp, m_os->str(), m_os->pcount());
                delete[] m_os->str(); delete m_os; m_os = oss;
            }
        }

    private:
        gzFile m_fp;
        ostrstream* m_os;
};

/*
 * Binary write the given (array of) object(s) into the compressed file.
 * returns the number of uncompressed bytes actually written
 * (0 in case of error).
 */
template <class T, class Items>
inline int write(ozstream& zs, const T* x, Items items) {
    return ::gzwrite(zs.fp(), (voidp) x, items*sizeof(T));
}

/*
 * Binary output with the '<' operator.
 */
template <class T>
inline ozstream& operator<(ozstream& zs, const T& x) {
    ::gzwrite(zs.fp(), (voidp) &x, sizeof(T));
    return zs;
}

inline zstringlen::zstringlen(ozstream& zs, const char* x) {
    val.byte = 255;  val.word = ::strlen(x);
    if (val.word < 255) zs < (val.byte = val.word);
    else zs < val;
}

/*
 * Write length of string + the string with the '<' operator.
 */
inline ozstream& operator<(ozstream& zs, const char* x) {
    zstringlen len(zs, x);
    ::gzwrite(zs.fp(), (voidp) x, len.value());
    return zs;
}

#ifdef _MSC_VER
inline ozstream& operator<(ozstream& zs, char* const& x) {
    return zs < (const char*) x;
}
#endif

/*
 * Ascii write with the << operator;
 */
template <class T>
inline ostream& operator<<(ozstream& zs, const T& x) {
    zs.os_flush();
    return zs.os() << x;
}

#endif
Added compat/zlib/contrib/iostream2/zstream_test.cpp.

























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#include "zstream.h"
#include <math.h>
#include <stdlib.h>
#include <iomanip.h>

void main() {
    char h[256] = "Hello";
    char* g = "Goodbye";
    ozstream out("temp.gz");
    out < "This works well" < h < g;
    out.close();

    izstream in("temp.gz"); // read it back
    char *x = read_string(in), *y = new char[256], z[256];
    in > y > z;
    in.close();
    cout << x << endl << y << endl << z << endl;

    out.open("temp.gz"); // try ascii output; zcat temp.gz to see the results
    out << setw(50) << setfill('#') << setprecision(20) << x << endl << y << endl << z << endl;
    out << z << endl << y << endl << x << endl;
    out << 1.1234567890123456789 << endl;

    delete[] x; delete[] y;
}
Added compat/zlib/contrib/iostream3/README.



































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These classes provide a C++ stream interface to the zlib library. It allows you
to do things like:

  gzofstream outf("blah.gz");
  outf << "These go into the gzip file " << 123 << endl;

It does this by deriving a specialized stream buffer for gzipped files, which is
the way Stroustrup would have done it. :->

The gzifstream and gzofstream classes were originally written by Kevin Ruland
and made available in the zlib contrib/iostream directory. The older version still
compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of
this version.

The new classes are as standard-compliant as possible, closely following the
approach of the standard library's fstream classes. It compiles under gcc versions
3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard
library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs
from the previous one in the following respects:
- added showmanyc
- added setbuf, with support for unbuffered output via setbuf(0,0)
- a few bug fixes of stream behavior
- gzipped output file opened with default compression level instead of maximum level
- setcompressionlevel()/strategy() members replaced by single setcompression()

The code is provided "as is", with the permission to use, copy, modify, distribute
and sell it for any purpose without fee.

Ludwig Schwardt
<schwardt@sun.ac.za>

DSP Lab
Electrical & Electronic Engineering Department
University of Stellenbosch
South Africa
Added compat/zlib/contrib/iostream3/TODO.

















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Possible upgrades to gzfilebuf:

- The ability to do putback (e.g. putbackfail)

- The ability to seek (zlib supports this, but could be slow/tricky)

- Simultaneous read/write access (does it make sense?)

- Support for ios_base::ate open mode

- Locale support?

- Check public interface to see which calls give problems
  (due to dependence on library internals)

- Override operator<<(ostream&, gzfilebuf*) to allow direct copying
  of stream buffer to stream ( i.e. os << is.rdbuf(); )
Added compat/zlib/contrib/iostream3/test.cc.


















































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/*
 * Test program for gzifstream and gzofstream
 *
 * by Ludwig Schwardt <schwardt@sun.ac.za>
 * original version by Kevin Ruland <kevin@rodin.wustl.edu>
 */

#include "zfstream.h"
#include <iostream>      // for cout

int main() {

  gzofstream outf;
  gzifstream inf;
  char buf[80];

  outf.open("test1.txt.gz");
  outf << "The quick brown fox sidestepped the lazy canine\n"
       << 1.3 << "\nPlan " << 9 << std::endl;
  outf.close();
  std::cout << "Wrote the following message to 'test1.txt.gz' (check with zcat or zless):\n"
            << "The quick brown fox sidestepped the lazy canine\n"
            << 1.3 << "\nPlan " << 9 << std::endl;

  std::cout << "\nReading 'test1.txt.gz' (buffered) produces:\n";
  inf.open("test1.txt.gz");
  while (inf.getline(buf,80,'\n')) {
    std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
  }
  inf.close();

  outf.rdbuf()->pubsetbuf(0,0);
  outf.open("test2.txt.gz");
  outf << setcompression(Z_NO_COMPRESSION)
       << "The quick brown fox sidestepped the lazy canine\n"
       << 1.3 << "\nPlan " << 9 << std::endl;
  outf.close();
  std::cout << "\nWrote the same message to 'test2.txt.gz' in uncompressed form";

  std::cout << "\nReading 'test2.txt.gz' (unbuffered) produces:\n";
  inf.rdbuf()->pubsetbuf(0,0);
  inf.open("test2.txt.gz");
  while (inf.getline(buf,80,'\n')) {
    std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
  }
  inf.close();

  return 0;

}
Added compat/zlib/contrib/iostream3/zfstream.cc.































































































































































































































































































































































































































































































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/*
 * A C++ I/O streams interface to the zlib gz* functions
 *
 * by Ludwig Schwardt <schwardt@sun.ac.za>
 * original version by Kevin Ruland <kevin@rodin.wustl.edu>
 *
 * This version is standard-compliant and compatible with gcc 3.x.
 */

#include "zfstream.h"
#include <cstring>          // for strcpy, strcat, strlen (mode strings)
#include <cstdio>           // for BUFSIZ

// Internal buffer sizes (default and "unbuffered" versions)
#define BIGBUFSIZE BUFSIZ
#define SMALLBUFSIZE 1

/*****************************************************************************/

// Default constructor
gzfilebuf::gzfilebuf()
: file(NULL), io_mode(std::ios_base::openmode(0)), own_fd(false),
  buffer(NULL), buffer_size(BIGBUFSIZE), own_buffer(true)
{
  // No buffers to start with
  this->disable_buffer();
}

// Destructor
gzfilebuf::~gzfilebuf()
{
  // Sync output buffer and close only if responsible for file
  // (i.e. attached streams should be left open at this stage)
  this->sync();
  if (own_fd)
    this->close();
  // Make sure internal buffer is deallocated
  this->disable_buffer();
}

// Set compression level and strategy
int
gzfilebuf::setcompression(int comp_level,
                          int comp_strategy)
{
  return gzsetparams(file, comp_level, comp_strategy);
}

// Open gzipped file
gzfilebuf*
gzfilebuf::open(const char *name,
                std::ios_base::openmode mode)
{
  // Fail if file already open
  if (this->is_open())
    return NULL;
  // Don't support simultaneous read/write access (yet)
  if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
    return NULL;

  // Build mode string for gzopen and check it [27.8.1.3.2]
  char char_mode[6] = "\0\0\0\0\0";
  if (!this->open_mode(mode, char_mode))
    return NULL;

  // Attempt to open file
  if ((file = gzopen(name, char_mode)) == NULL)
    return NULL;

  // On success, allocate internal buffer and set flags
  this->enable_buffer();
  io_mode = mode;
  own_fd = true;
  return this;
}

// Attach to gzipped file
gzfilebuf*
gzfilebuf::attach(int fd,
                  std::ios_base::openmode mode)
{
  // Fail if file already open
  if (this->is_open())
    return NULL;
  // Don't support simultaneous read/write access (yet)
  if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
    return NULL;

  // Build mode string for gzdopen and check it [27.8.1.3.2]
  char char_mode[6] = "\0\0\0\0\0";
  if (!this->open_mode(mode, char_mode))
    return NULL;

  // Attempt to attach to file
  if ((file = gzdopen(fd, char_mode)) == NULL)
    return NULL;

  // On success, allocate internal buffer and set flags
  this->enable_buffer();
  io_mode = mode;
  own_fd = false;
  return this;
}

// Close gzipped file
gzfilebuf*
gzfilebuf::close()
{
  // Fail immediately if no file is open
  if (!this->is_open())
    return NULL;
  // Assume success
  gzfilebuf* retval = this;
  // Attempt to sync and close gzipped file
  if (this->sync() == -1)
    retval = NULL;
  if (gzclose(file) < 0)
    retval = NULL;
  // File is now gone anyway (postcondition [27.8.1.3.8])
  file = NULL;
  own_fd = false;
  // Destroy internal buffer if it exists
  this->disable_buffer();
  return retval;
}

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

// Convert int open mode to mode string
bool
gzfilebuf::open_mode(std::ios_base::openmode mode,
                     char* c_mode) const
{
  bool testb = mode & std::ios_base::binary;
  bool testi = mode & std::ios_base::in;
  bool testo = mode & std::ios_base::out;
  bool testt = mode & std::ios_base::trunc;
  bool testa = mode & std::ios_base::app;

  // Check for valid flag combinations - see [27.8.1.3.2] (Table 92)
  // Original zfstream hardcoded the compression level to maximum here...
  // Double the time for less than 1% size improvement seems
  // excessive though - keeping it at the default level
  // To change back, just append "9" to the next three mode strings
  if (!testi && testo && !testt && !testa)
    strcpy(c_mode, "w");
  if (!testi && testo && !testt && testa)
    strcpy(c_mode, "a");
  if (!testi && testo && testt && !testa)
    strcpy(c_mode, "w");
  if (testi && !testo && !testt && !testa)
    strcpy(c_mode, "r");
  // No read/write mode yet
//  if (testi && testo && !testt && !testa)
//    strcpy(c_mode, "r+");
//  if (testi && testo && testt && !testa)
//    strcpy(c_mode, "w+");

  // Mode string should be empty for invalid combination of flags
  if (strlen(c_mode) == 0)
    return false;
  if (testb)
    strcat(c_mode, "b");
  return true;
}

// Determine number of characters in internal get buffer
std::streamsize
gzfilebuf::showmanyc()
{
  // Calls to underflow will fail if file not opened for reading
  if (!this->is_open() || !(io_mode & std::ios_base::in))
    return -1;
  // Make sure get area is in use
  if (this->gptr() && (this->gptr() < this->egptr()))
    return std::streamsize(this->egptr() - this->gptr());
  else
    return 0;
}

// Fill get area from gzipped file
gzfilebuf::int_type
gzfilebuf::underflow()
{
  // If something is left in the get area by chance, return it
  // (this shouldn't normally happen, as underflow is only supposed
  // to be called when gptr >= egptr, but it serves as error check)
  if (this->gptr() && (this->gptr() < this->egptr()))
    return traits_type::to_int_type(*(this->gptr()));

  // If the file hasn't been opened for reading, produce error
  if (!this->is_open() || !(io_mode & std::ios_base::in))
    return traits_type::eof();

  // Attempt to fill internal buffer from gzipped file
  // (buffer must be guaranteed to exist...)
  int bytes_read = gzread(file, buffer, buffer_size);
  // Indicates error or EOF
  if (bytes_read <= 0)
  {
    // Reset get area
    this->setg(buffer, buffer, buffer);
    return traits_type::eof();
  }
  // Make all bytes read from file available as get area
  this->setg(buffer, buffer, buffer + bytes_read);

  // Return next character in get area
  return traits_type::to_int_type(*(this->gptr()));
}

// Write put area to gzipped file
gzfilebuf::int_type
gzfilebuf::overflow(int_type c)
{
  // Determine whether put area is in use
  if (this->pbase())
  {
    // Double-check pointer range
    if (this->pptr() > this->epptr() || this->pptr() < this->pbase())
      return traits_type::eof();
    // Add extra character to buffer if not EOF
    if (!traits_type::eq_int_type(c, traits_type::eof()))
    {
      *(this->pptr()) = traits_type::to_char_type(c);
      this->pbump(1);
    }
    // Number of characters to write to file
    int bytes_to_write = this->pptr() - this->pbase();
    // Overflow doesn't fail if nothing is to be written
    if (bytes_to_write > 0)
    {
      // If the file hasn't been opened for writing, produce error
      if (!this->is_open() || !(io_mode & std::ios_base::out))
        return traits_type::eof();
      // If gzipped file won't accept all bytes written to it, fail
      if (gzwrite(file, this->pbase(), bytes_to_write) != bytes_to_write)
        return traits_type::eof();
      // Reset next pointer to point to pbase on success
      this->pbump(-bytes_to_write);
    }
  }
  // Write extra character to file if not EOF
  else if (!traits_type::eq_int_type(c, traits_type::eof()))
  {
    // If the file hasn't been opened for writing, produce error
    if (!this->is_open() || !(io_mode & std::ios_base::out))
      return traits_type::eof();
    // Impromptu char buffer (allows "unbuffered" output)
    char_type last_char = traits_type::to_char_type(c);
    // If gzipped file won't accept this character, fail
    if (gzwrite(file, &last_char, 1) != 1)
      return traits_type::eof();
  }

  // If you got here, you have succeeded (even if c was EOF)
  // The return value should therefore be non-EOF
  if (traits_type::eq_int_type(c, traits_type::eof()))
    return traits_type::not_eof(c);
  else
    return c;
}

// Assign new buffer
std::streambuf*
gzfilebuf::setbuf(char_type* p,
                  std::streamsize n)
{
  // First make sure stuff is sync'ed, for safety
  if (this->sync() == -1)
    return NULL;
  // If buffering is turned off on purpose via setbuf(0,0), still allocate one...
  // "Unbuffered" only really refers to put [27.8.1.4.10], while get needs at
  // least a buffer of size 1 (very inefficient though, therefore make it bigger?)
  // This follows from [27.5.2.4.3]/12 (gptr needs to point at something, it seems)
  if (!p || !n)
  {
    // Replace existing buffer (if any) with small internal buffer
    this->disable_buffer();
    buffer = NULL;
    buffer_size = 0;
    own_buffer = true;
    this->enable_buffer();
  }
  else
  {
    // Replace existing buffer (if any) with external buffer
    this->disable_buffer();
    buffer = p;
    buffer_size = n;
    own_buffer = false;
    this->enable_buffer();
  }
  return this;
}

// Write put area to gzipped file (i.e. ensures that put area is empty)
int
gzfilebuf::sync()
{
  return traits_type::eq_int_type(this->overflow(), traits_type::eof()) ? -1 : 0;
}

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

// Allocate internal buffer
void
gzfilebuf::enable_buffer()
{
  // If internal buffer required, allocate one
  if (own_buffer && !buffer)
  {
    // Check for buffered vs. "unbuffered"
    if (buffer_size > 0)
    {
      // Allocate internal buffer
      buffer = new char_type[buffer_size];
      // Get area starts empty and will be expanded by underflow as need arises
      this->setg(buffer, buffer, buffer);
      // Setup entire internal buffer as put area.
      // The one-past-end pointer actually points to the last element of the buffer,
      // so that overflow(c) can safely add the extra character c to the sequence.
      // These pointers remain in place for the duration of the buffer
      this->setp(buffer, buffer + buffer_size - 1);
    }
    else
    {
      // Even in "unbuffered" case, (small?) get buffer is still required
      buffer_size = SMALLBUFSIZE;
      buffer = new char_type[buffer_size];
      this->setg(buffer, buffer, buffer);
      // "Unbuffered" means no put buffer
      this->setp(0, 0);
    }
  }
  else
  {
    // If buffer already allocated, reset buffer pointers just to make sure no
    // stale chars are lying around
    this->setg(buffer, buffer, buffer);
    this->setp(buffer, buffer + buffer_size - 1);
  }
}

// Destroy internal buffer
void
gzfilebuf::disable_buffer()
{
  // If internal buffer exists, deallocate it
  if (own_buffer && buffer)
  {
    // Preserve unbuffered status by zeroing size
    if (!this->pbase())
      buffer_size = 0;
    delete[] buffer;
    buffer = NULL;
    this->setg(0, 0, 0);
    this->setp(0, 0);
  }
  else
  {
    // Reset buffer pointers to initial state if external buffer exists
    this->setg(buffer, buffer, buffer);
    if (buffer)
      this->setp(buffer, buffer + buffer_size - 1);
    else
      this->setp(0, 0);
  }
}

/*****************************************************************************/

// Default constructor initializes stream buffer
gzifstream::gzifstream()
: std::istream(NULL), sb()
{ this->init(&sb); }

// Initialize stream buffer and open file
gzifstream::gzifstream(const char* name,
                       std::ios_base::openmode mode)
: std::istream(NULL), sb()
{
  this->init(&sb);
  this->open(name, mode);
}

// Initialize stream buffer and attach to file
gzifstream::gzifstream(int fd,
                       std::ios_base::openmode mode)
: std::istream(NULL), sb()
{
  this->init(&sb);
  this->attach(fd, mode);
}

// Open file and go into fail() state if unsuccessful
void
gzifstream::open(const char* name,
                 std::ios_base::openmode mode)
{
  if (!sb.open(name, mode | std::ios_base::in))
    this->setstate(std::ios_base::failbit);
  else
    this->clear();
}

// Attach to file and go into fail() state if unsuccessful
void
gzifstream::attach(int fd,
                   std::ios_base::openmode mode)
{
  if (!sb.attach(fd, mode | std::ios_base::in))
    this->setstate(std::ios_base::failbit);
  else
    this->clear();
}

// Close file
void
gzifstream::close()
{
  if (!sb.close())
    this->setstate(std::ios_base::failbit);
}

/*****************************************************************************/

// Default constructor initializes stream buffer
gzofstream::gzofstream()
: std::ostream(NULL), sb()
{ this->init(&sb); }

// Initialize stream buffer and open file
gzofstream::gzofstream(const char* name,
                       std::ios_base::openmode mode)
: std::ostream(NULL), sb()
{
  this->init(&sb);
  this->open(name, mode);
}

// Initialize stream buffer and attach to file
gzofstream::gzofstream(int fd,
                       std::ios_base::openmode mode)
: std::ostream(NULL), sb()
{
  this->init(&sb);
  this->attach(fd, mode);
}

// Open file and go into fail() state if unsuccessful
void
gzofstream::open(const char* name,
                 std::ios_base::openmode mode)
{
  if (!sb.open(name, mode | std::ios_base::out))
    this->setstate(std::ios_base::failbit);
  else
    this->clear();
}

// Attach to file and go into fail() state if unsuccessful
void
gzofstream::attach(int fd,
                   std::ios_base::openmode mode)
{
  if (!sb.attach(fd, mode | std::ios_base::out))
    this->setstate(std::ios_base::failbit);
  else
    this->clear();
}

// Close file
void
gzofstream::close()
{
  if (!sb.close())
    this->setstate(std::ios_base::failbit);
}
Added compat/zlib/contrib/iostream3/zfstream.h.


















































































































































































































































































































































































































































































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/*
 * A C++ I/O streams interface to the zlib gz* functions
 *
 * by Ludwig Schwardt <schwardt@sun.ac.za>
 * original version by Kevin Ruland <kevin@rodin.wustl.edu>
 *
 * This version is standard-compliant and compatible with gcc 3.x.
 */

#ifndef ZFSTREAM_H
#define ZFSTREAM_H

#include <istream>  // not iostream, since we don't need cin/cout
#include <ostream>
#include "zlib.h"

/*****************************************************************************/

/**
 *  @brief  Gzipped file stream buffer class.
 *
 *  This class implements basic_filebuf for gzipped files. It doesn't yet support
 *  seeking (allowed by zlib but slow/limited), putback and read/write access
 *  (tricky). Otherwise, it attempts to be a drop-in replacement for the standard
 *  file streambuf.
*/
class gzfilebuf : public std::streambuf
{
public:
  //  Default constructor.
  gzfilebuf();

  //  Destructor.
  virtual
  ~gzfilebuf();

  /**
   *  @brief  Set compression level and strategy on the fly.
   *  @param  comp_level  Compression level (see zlib.h for allowed values)
   *  @param  comp_strategy  Compression strategy (see zlib.h for allowed values)
   *  @return  Z_OK on success, Z_STREAM_ERROR otherwise.
   *
   *  Unfortunately, these parameters cannot be modified separately, as the
   *  previous zfstream version assumed. Since the strategy is seldom changed,
   *  it can default and setcompression(level) then becomes like the old
   *  setcompressionlevel(level).
  */
  int
  setcompression(int comp_level,
                 int comp_strategy = Z_DEFAULT_STRATEGY);

  /**
   *  @brief  Check if file is open.
   *  @return  True if file is open.
  */
  bool
  is_open() const { return (file != NULL); }

  /**
   *  @brief  Open gzipped file.
   *  @param  name  File name.
   *  @param  mode  Open mode flags.
   *  @return  @c this on success, NULL on failure.
  */
  gzfilebuf*
  open(const char* name,
       std::ios_base::openmode mode);

  /**
   *  @brief  Attach to already open gzipped file.
   *  @param  fd  File descriptor.
   *  @param  mode  Open mode flags.
   *  @return  @c this on success, NULL on failure.
  */
  gzfilebuf*
  attach(int fd,
         std::ios_base::openmode mode);

  /**
   *  @brief  Close gzipped file.
   *  @return  @c this on success, NULL on failure.
  */
  gzfilebuf*
  close();

protected:
  /**
   *  @brief  Convert ios open mode int to mode string used by zlib.
   *  @return  True if valid mode flag combination.
  */
  bool
  open_mode(std::ios_base::openmode mode,
            char* c_mode) const;

  /**
   *  @brief  Number of characters available in stream buffer.
   *  @return  Number of characters.
   *
   *  This indicates number of characters in get area of stream buffer.
   *  These characters can be read without accessing the gzipped file.
  */
  virtual std::streamsize
  showmanyc();

  /**
   *  @brief  Fill get area from gzipped file.
   *  @return  First character in get area on success, EOF on error.
   *
   *  This actually reads characters from gzipped file to stream
   *  buffer. Always buffered.
  */
  virtual int_type
  underflow();

  /**
   *  @brief  Write put area to gzipped file.
   *  @param  c  Extra character to add to buffer contents.
   *  @return  Non-EOF on success, EOF on error.
   *
   *  This actually writes characters in stream buffer to
   *  gzipped file. With unbuffered output this is done one
   *  character at a time.
  */
  virtual int_type
  overflow(int_type c = traits_type::eof());

  /**
   *  @brief  Installs external stream buffer.
   *  @param  p  Pointer to char buffer.
   *  @param  n  Size of external buffer.
   *  @return  @c this on success, NULL on failure.
   *
   *  Call setbuf(0,0) to enable unbuffered output.
  */
  virtual std::streambuf*
  setbuf(char_type* p,
         std::streamsize n);

  /**
   *  @brief  Flush stream buffer to file.
   *  @return  0 on success, -1 on error.
   *
   *  This calls underflow(EOF) to do the job.
  */
  virtual int
  sync();

//
// Some future enhancements
//
//  virtual int_type uflow();
//  virtual int_type pbackfail(int_type c = traits_type::eof());
//  virtual pos_type
//  seekoff(off_type off,
//          std::ios_base::seekdir way,
//          std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
//  virtual pos_type
//  seekpos(pos_type sp,
//          std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);

private:
  /**
   *  @brief  Allocate internal buffer.
   *
   *  This function is safe to call multiple times. It will ensure
   *  that a proper internal buffer exists if it is required. If the
   *  buffer already exists or is external, the buffer pointers will be
   *  reset to their original state.
  */
  void
  enable_buffer();

  /**
   *  @brief  Destroy internal buffer.
   *
   *  This function is safe to call multiple times. It will ensure
   *  that the internal buffer is deallocated if it exists. In any
   *  case, it will also reset the buffer pointers.
  */
  void
  disable_buffer();

  /**
   *  Underlying file pointer.
  */
  gzFile file;

  /**
   *  Mode in which file was opened.
  */
  std::ios_base::openmode io_mode;

  /**
   *  @brief  True if this object owns file descriptor.
   *
   *  This makes the class responsible for closing the file
   *  upon destruction.
  */
  bool own_fd;

  /**
   *  @brief  Stream buffer.
   *
   *  For simplicity this remains allocated on the free store for the
   *  entire life span of the gzfilebuf object, unless replaced by setbuf.
  */
  char_type* buffer;

  /**
   *  @brief  Stream buffer size.
   *
   *  Defaults to system default buffer size (typically 8192 bytes).
   *  Modified by setbuf.
  */
  std::streamsize buffer_size;

  /**
   *  @brief  True if this object owns stream buffer.
   *
   *  This makes the class responsible for deleting the buffer
   *  upon destruction.
  */
  bool own_buffer;
};

/*****************************************************************************/

/**
 *  @brief  Gzipped file input stream class.
 *
 *  This class implements ifstream for gzipped files. Seeking and putback
 *  is not supported yet.
*/
class gzifstream : public std::istream
{
public:
  //  Default constructor
  gzifstream();

  /**
   *  @brief  Construct stream on gzipped file to be opened.
   *  @param  name  File name.
   *  @param  mode  Open mode flags (forced to contain ios::in).
  */
  explicit
  gzifstream(const char* name,
             std::ios_base::openmode mode = std::ios_base::in);

  /**
   *  @brief  Construct stream on already open gzipped file.
   *  @param  fd    File descriptor.
   *  @param  mode  Open mode flags (forced to contain ios::in).
  */
  explicit
  gzifstream(int fd,
             std::ios_base::openmode mode = std::ios_base::in);

  /**
   *  Obtain underlying stream buffer.
  */
  gzfilebuf*
  rdbuf() const
  { return const_cast<gzfilebuf*>(&sb); }

  /**
   *  @brief  Check if file is open.
   *  @return  True if file is open.
  */
  bool
  is_open() { return sb.is_open(); }

  /**
   *  @brief  Open gzipped file.
   *  @param  name  File name.
   *  @param  mode  Open mode flags (forced to contain ios::in).
   *
   *  Stream will be in state good() if file opens successfully;
   *  otherwise in state fail(). This differs from the behavior of
   *  ifstream, which never sets the state to good() and therefore
   *  won't allow you to reuse the stream for a second file unless
   *  you manually clear() the state. The choice is a matter of
   *  convenience.
  */
  void
  open(const char* name,
       std::ios_base::openmode mode = std::ios_base::in);

  /**
   *  @brief  Attach to already open gzipped file.
   *  @param  fd  File descriptor.
   *  @param  mode  Open mode flags (forced to contain ios::in).
   *
   *  Stream will be in state good() if attach succeeded; otherwise
   *  in state fail().
  */
  void
  attach(int fd,
         std::ios_base::openmode mode = std::ios_base::in);

  /**
   *  @brief  Close gzipped file.
   *
   *  Stream will be in state fail() if close failed.
  */
  void
  close();

private:
  /**
   *  Underlying stream buffer.
  */
  gzfilebuf sb;
};

/*****************************************************************************/

/**
 *  @brief  Gzipped file output stream class.
 *
 *  This class implements ofstream for gzipped files. Seeking and putback
 *  is not supported yet.
*/
class gzofstream : public std::ostream
{
public:
  //  Default constructor
  gzofstream();

  /**
   *  @brief  Construct stream on gzipped file to be opened.
   *  @param  name  File name.
   *  @param  mode  Open mode flags (forced to contain ios::out).
  */
  explicit
  gzofstream(const char* name,
             std::ios_base::openmode mode = std::ios_base::out);

  /**
   *  @brief  Construct stream on already open gzipped file.
   *  @param  fd    File descriptor.
   *  @param  mode  Open mode flags (forced to contain ios::out).
  */
  explicit
  gzofstream(int fd,
             std::ios_base::openmode mode = std::ios_base::out);

  /**
   *  Obtain underlying stream buffer.
  */
  gzfilebuf*
  rdbuf() const
  { return const_cast<gzfilebuf*>(&sb); }

  /**
   *  @brief  Check if file is open.
   *  @return  True if file is open.
  */
  bool
  is_open() { return sb.is_open(); }

  /**
   *  @brief  Open gzipped file.
   *  @param  name  File name.
   *  @param  mode  Open mode flags (forced to contain ios::out).
   *
   *  Stream will be in state good() if file opens successfully;
   *  otherwise in state fail(). This differs from the behavior of
   *  ofstream, which never sets the state to good() and therefore
   *  won't allow you to reuse the stream for a second file unless
   *  you manually clear() the state. The choice is a matter of
   *  convenience.
  */
  void
  open(const char* name,
       std::ios_base::openmode mode = std::ios_base::out);

  /**
   *  @brief  Attach to already open gzipped file.
   *  @param  fd  File descriptor.
   *  @param  mode  Open mode flags (forced to contain ios::out).
   *
   *  Stream will be in state good() if attach succeeded; otherwise
   *  in state fail().
  */
  void
  attach(int fd,
         std::ios_base::openmode mode = std::ios_base::out);

  /**
   *  @brief  Close gzipped file.
   *
   *  Stream will be in state fail() if close failed.
  */
  void
  close();

private:
  /**
   *  Underlying stream buffer.
  */
  gzfilebuf sb;
};

/*****************************************************************************/

/**
 *  @brief  Gzipped file output stream manipulator class.
 *
 *  This class defines a two-argument manipulator for gzofstream. It is used
 *  as base for the setcompression(int,int) manipulator.
*/
template<typename T1, typename T2>
  class gzomanip2
  {
  public:
    // Allows inserter to peek at internals
    template <typename Ta, typename Tb>
      friend gzofstream&
      operator<<(gzofstream&,
                 const gzomanip2<Ta,Tb>&);

    // Constructor
    gzomanip2(gzofstream& (*f)(gzofstream&, T1, T2),
              T1 v1,
              T2 v2);
  private:
    // Underlying manipulator function
    gzofstream&
    (*func)(gzofstream&, T1, T2);

    // Arguments for manipulator function
    T1 val1;
    T2 val2;
  };

/*****************************************************************************/

// Manipulator function thunks through to stream buffer
inline gzofstream&
setcompression(gzofstream &gzs, int l, int s = Z_DEFAULT_STRATEGY)
{
  (gzs.rdbuf())->setcompression(l, s);
  return gzs;
}

// Manipulator constructor stores arguments
template<typename T1, typename T2>
  inline
  gzomanip2<T1,T2>::gzomanip2(gzofstream &(*f)(gzofstream &, T1, T2),
                              T1 v1,
                              T2 v2)
  : func(f), val1(v1), val2(v2)
  { }

// Inserter applies underlying manipulator function to stream
template<typename T1, typename T2>
  inline gzofstream&
  operator<<(gzofstream& s, const gzomanip2<T1,T2>& m)
  { return (*m.func)(s, m.val1, m.val2); }

// Insert this onto stream to simplify setting of compression level
inline gzomanip2<int,int>
setcompression(int l, int s = Z_DEFAULT_STRATEGY)
{ return gzomanip2<int,int>(&setcompression, l, s); }

#endif // ZFSTREAM_H
Added compat/zlib/contrib/minizip/Makefile.





























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CC?=cc
CFLAGS := $(CFLAGS) -O -I../..

UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a
ZIP_OBJS = minizip.o zip.o   ioapi.o ../../libz.a

.c.o:
	$(CC) -c $(CFLAGS) $*.c

all: miniunz minizip

miniunz:  $(UNZ_OBJS)
	$(CC) $(CFLAGS) -o $@ $(UNZ_OBJS)

minizip:  $(ZIP_OBJS)
	$(CC) $(CFLAGS) -o $@ $(ZIP_OBJS)

test:	miniunz minizip
	@rm -f test.*
	@echo hello hello hello > test.txt
	./minizip test test.txt
	./miniunz -l test.zip
	@mv test.txt test.old
	./miniunz test.zip
	@cmp test.txt test.old
	@rm -f test.*

clean:
	/bin/rm -f *.o *~ minizip miniunz test.*
Added compat/zlib/contrib/minizip/Makefile.am.













































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lib_LTLIBRARIES = libminizip.la

if COND_DEMOS
bin_PROGRAMS = miniunzip minizip
endif

zlib_top_srcdir = $(top_srcdir)/../..
zlib_top_builddir = $(top_builddir)/../..

AM_CPPFLAGS = -I$(zlib_top_srcdir)
AM_LDFLAGS = -L$(zlib_top_builddir)

if WIN32
iowin32_src = iowin32.c
iowin32_h = iowin32.h
endif

libminizip_la_SOURCES = \
	ioapi.c \
	mztools.c \
	unzip.c \
	zip.c \
	${iowin32_src}

libminizip_la_LDFLAGS = $(AM_LDFLAGS) -version-info 1:0:0 -lz

minizip_includedir = $(includedir)/minizip
minizip_include_HEADERS = \
	crypt.h \
	ioapi.h \
	mztools.h \
	unzip.h \
	zip.h \
	${iowin32_h}

pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = minizip.pc

EXTRA_PROGRAMS = miniunzip minizip

miniunzip_SOURCES = miniunz.c
miniunzip_LDADD = libminizip.la

minizip_SOURCES = minizip.c
minizip_LDADD = libminizip.la -lz
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MiniZip 1.1 was derived from MiniZip at version 1.01f

Change in 1.0 (Okt 2009)
 - **TODO - Add history**

Added compat/zlib/contrib/minizip/MiniZip64_info.txt.










































































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MiniZip - Copyright (c) 1998-2010 - by Gilles Vollant - version 1.1 64 bits from Mathias Svensson

Introduction
---------------------
MiniZip 1.1 is built from MiniZip 1.0 by Gilles Vollant ( http://www.winimage.com/zLibDll/minizip.html )

When adding ZIP64 support into minizip it would result into risk of breaking compatibility with minizip 1.0.
All possible work was done for compatibility.


Background
---------------------
When adding ZIP64 support Mathias Svensson found that Even Rouault have added ZIP64 
support for unzip.c into minizip for a open source project called gdal ( http://www.gdal.org/ )

That was used as a starting point. And after that ZIP64 support was added to zip.c
some refactoring and code cleanup was also done.


Changed from MiniZip 1.0 to MiniZip 1.1
---------------------------------------
* Added ZIP64 support for unzip ( by Even Rouault )
* Added ZIP64 support for zip ( by Mathias Svensson )
* Reverted some changed that Even Rouault did.
* Bunch of patches received from Gulles Vollant that he received for MiniZip from various users.
* Added unzip patch for BZIP Compression method (patch create by Daniel Borca)
* Added BZIP Compress method for zip
* Did some refactoring and code cleanup


Credits

 Gilles Vollant    - Original MiniZip author
 Even Rouault      - ZIP64 unzip Support
 Daniel Borca      - BZip Compression method support in unzip
 Mathias Svensson  - ZIP64 zip support
 Mathias Svensson  - BZip Compression method support in zip

 Resources

 ZipLayout   http://result42.com/projects/ZipFileLayout
             Command line tool for Windows that shows the layout and information of the headers in a zip archive.
             Used when debugging and validating the creation of zip files using MiniZip64


 ZIP App Note  http://www.pkware.com/documents/casestudies/APPNOTE.TXT
               Zip File specification


Notes.
 * To be able to use BZip compression method in zip64.c or unzip64.c the BZIP2 lib is needed and HAVE_BZIP2 need to be defined.

License
----------------------------------------------------------
   Condition of use and distribution are the same than zlib :

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

----------------------------------------------------------

Added compat/zlib/contrib/minizip/configure.ac.
































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#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_INIT([minizip], [1.3.1], [bugzilla.redhat.com])
AC_CONFIG_SRCDIR([minizip.c])
AM_INIT_AUTOMAKE([foreign])
LT_INIT

AC_MSG_CHECKING([whether to build example programs])
AC_ARG_ENABLE([demos], AC_HELP_STRING([--enable-demos], [build example programs]))
AM_CONDITIONAL([COND_DEMOS], [test "$enable_demos" = yes])
if test "$enable_demos" = yes
then
	AC_MSG_RESULT([yes])
else
	AC_MSG_RESULT([no])
fi

case "${host}" in
	*-mingw* | mingw*)
		WIN32="yes"
		;;
	*)
		;;
esac
AM_CONDITIONAL([WIN32], [test "${WIN32}" = "yes"])


AC_SUBST([HAVE_UNISTD_H], [0])
AC_CHECK_HEADER([unistd.h], [HAVE_UNISTD_H=1], [])
AC_CONFIG_FILES([Makefile minizip.pc])
AC_OUTPUT
Added compat/zlib/contrib/minizip/crypt.h.
































































































































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/* crypt.h -- base code for crypt/uncrypt ZIPfile


   Version 1.01e, February 12th, 2005

   Copyright (C) 1998-2005 Gilles Vollant

   This code is a modified version of crypting code in Infozip distribution

   The encryption/decryption parts of this source code (as opposed to the
   non-echoing password parts) were originally written in Europe.  The
   whole source package can be freely distributed, including from the USA.
   (Prior to January 2000, re-export from the US was a violation of US law.)

   This encryption code is a direct transcription of the algorithm from
   Roger Schlafly, described by Phil Katz in the file appnote.txt.  This
   file (appnote.txt) is distributed with the PKZIP program (even in the
   version without encryption capabilities).

   If you don't need crypting in your application, just define symbols
   NOCRYPT and NOUNCRYPT.

   This code support the "Traditional PKWARE Encryption".

   The new AES encryption added on Zip format by Winzip (see the page
   http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong
   Encryption is not supported.
*/

#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))

/***********************************************************************
 * Return the next byte in the pseudo-random sequence
 */
static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab) {
    unsigned temp;  /* POTENTIAL BUG:  temp*(temp^1) may overflow in an
                     * unpredictable manner on 16-bit systems; not a problem
                     * with any known compiler so far, though */

    (void)pcrc_32_tab;
    temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2;
    return (int)(((temp * (temp ^ 1)) >> 8) & 0xff);
}

/***********************************************************************
 * Update the encryption keys with the next byte of plain text
 */
static int update_keys(unsigned long* pkeys, const z_crc_t* pcrc_32_tab, int c) {
    (*(pkeys+0)) = CRC32((*(pkeys+0)), c);
    (*(pkeys+1)) += (*(pkeys+0)) & 0xff;
    (*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
    {
      register int keyshift = (int)((*(pkeys+1)) >> 24);
      (*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift);
    }
    return c;
}


/***********************************************************************
 * Initialize the encryption keys and the random header according to
 * the given password.
 */
static void init_keys(const char* passwd, unsigned long* pkeys, const z_crc_t* pcrc_32_tab) {
    *(pkeys+0) = 305419896L;
    *(pkeys+1) = 591751049L;
    *(pkeys+2) = 878082192L;
    while (*passwd != '\0') {
        update_keys(pkeys,pcrc_32_tab,(int)*passwd);
        passwd++;
    }
}

#define zdecode(pkeys,pcrc_32_tab,c) \
    (update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))

#define zencode(pkeys,pcrc_32_tab,c,t) \
    (t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), (Byte)t^(c))

#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED

#define RAND_HEAD_LEN  12
   /* "last resort" source for second part of crypt seed pattern */
#  ifndef ZCR_SEED2
#    define ZCR_SEED2 3141592654UL      /* use PI as default pattern */
#  endif

static unsigned crypthead(const char* passwd,       /* password string */
                          unsigned char* buf,       /* where to write header */
                          int bufSize,
                          unsigned long* pkeys,
                          const z_crc_t* pcrc_32_tab,
                          unsigned long crcForCrypting) {
    unsigned n;                  /* index in random header */
    int t;                       /* temporary */
    int c;                       /* random byte */
    unsigned char header[RAND_HEAD_LEN-2]; /* random header */
    static unsigned calls = 0;   /* ensure different random header each time */

    if (bufSize<RAND_HEAD_LEN)
      return 0;

    /* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
     * output of rand() to get less predictability, since rand() is
     * often poorly implemented.
     */
    if (++calls == 1)
    {
        srand((unsigned)(time(NULL) ^ ZCR_SEED2));
    }
    init_keys(passwd, pkeys, pcrc_32_tab);
    for (n = 0; n < RAND_HEAD_LEN-2; n++)
    {
        c = (rand() >> 7) & 0xff;
        header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t);
    }
    /* Encrypt random header (last two bytes is high word of crc) */
    init_keys(passwd, pkeys, pcrc_32_tab);
    for (n = 0; n < RAND_HEAD_LEN-2; n++)
    {
        buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t);
    }
    buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t);
    buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t);
    return n;
}

#endif
Added compat/zlib/contrib/minizip/ioapi.c.







































































































































































































































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/* ioapi.h -- IO base function header for compress/uncompress .zip
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

*/

#if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
        #define _CRT_SECURE_NO_WARNINGS
#endif

#if defined(__APPLE__) || defined(IOAPI_NO_64) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
#define FTELLO_FUNC(stream) ftello(stream)
#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
#else
#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
#define FTELLO_FUNC(stream) ftello64(stream)
#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
#endif


#include "ioapi.h"

voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc, const void*filename, int mode) {
    if (pfilefunc->zfile_func64.zopen64_file != NULL)
        return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
    else
    {
        return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
    }
}

long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) {
    if (pfilefunc->zfile_func64.zseek64_file != NULL)
        return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
    else
    {
        uLong offsetTruncated = (uLong)offset;
        if (offsetTruncated != offset)
            return -1;
        else
            return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
    }
}

ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc, voidpf filestream) {
    if (pfilefunc->zfile_func64.zseek64_file != NULL)
        return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
    else
    {
        uLong tell_uLong = (uLong)(*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
        if ((tell_uLong) == MAXU32)
            return (ZPOS64_T)-1;
        else
            return tell_uLong;
    }
}

void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32, const zlib_filefunc_def* p_filefunc32) {
    p_filefunc64_32->zfile_func64.zopen64_file = NULL;
    p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
    p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
    p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
    p_filefunc64_32->zfile_func64.ztell64_file = NULL;
    p_filefunc64_32->zfile_func64.zseek64_file = NULL;
    p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
    p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
    p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
    p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
}



static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char* filename, int mode) {
    FILE* file = NULL;
    const char* mode_fopen = NULL;
    (void)opaque;
    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
        mode_fopen = "rb";
    else
    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
        mode_fopen = "r+b";
    else
    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
        mode_fopen = "wb";

    if ((filename!=NULL) && (mode_fopen != NULL))
        file = fopen(filename, mode_fopen);
    return file;
}

static voidpf ZCALLBACK fopen64_file_func(voidpf opaque, const void* filename, int mode) {
    FILE* file = NULL;
    const char* mode_fopen = NULL;
    (void)opaque;
    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
        mode_fopen = "rb";
    else
    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
        mode_fopen = "r+b";
    else
    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
        mode_fopen = "wb";

    if ((filename!=NULL) && (mode_fopen != NULL))
        file = FOPEN_FUNC((const char*)filename, mode_fopen);
    return file;
}


static uLong ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uLong size) {
    uLong ret;
    (void)opaque;
    ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
    return ret;
}

static uLong ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size) {
    uLong ret;
    (void)opaque;
    ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
    return ret;
}

static long ZCALLBACK ftell_file_func(voidpf opaque, voidpf stream) {
    long ret;
    (void)opaque;
    ret = ftell((FILE *)stream);
    return ret;
}


static ZPOS64_T ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream) {
    ZPOS64_T ret;
    (void)opaque;
    ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream);
    return ret;
}

static long ZCALLBACK fseek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin) {
    int fseek_origin=0;
    long ret;
    (void)opaque;
    switch (origin)
    {
    case ZLIB_FILEFUNC_SEEK_CUR :
        fseek_origin = SEEK_CUR;
        break;
    case ZLIB_FILEFUNC_SEEK_END :
        fseek_origin = SEEK_END;
        break;
    case ZLIB_FILEFUNC_SEEK_SET :
        fseek_origin = SEEK_SET;
        break;
    default: return -1;
    }
    ret = 0;
    if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0)
        ret = -1;
    return ret;
}

static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) {
    int fseek_origin=0;
    long ret;
    (void)opaque;
    switch (origin)
    {
    case ZLIB_FILEFUNC_SEEK_CUR :
        fseek_origin = SEEK_CUR;
        break;
    case ZLIB_FILEFUNC_SEEK_END :
        fseek_origin = SEEK_END;
        break;
    case ZLIB_FILEFUNC_SEEK_SET :
        fseek_origin = SEEK_SET;
        break;
    default: return -1;
    }
    ret = 0;

    if(FSEEKO_FUNC((FILE *)stream, (z_off64_t)offset, fseek_origin) != 0)
                        ret = -1;

    return ret;
}


static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream) {
    int ret;
    (void)opaque;
    ret = fclose((FILE *)stream);
    return ret;
}

static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream) {
    int ret;
    (void)opaque;
    ret = ferror((FILE *)stream);
    return ret;
}

void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def) {
    pzlib_filefunc_def->zopen_file = fopen_file_func;
    pzlib_filefunc_def->zread_file = fread_file_func;
    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
    pzlib_filefunc_def->ztell_file = ftell_file_func;
    pzlib_filefunc_def->zseek_file = fseek_file_func;
    pzlib_filefunc_def->zclose_file = fclose_file_func;
    pzlib_filefunc_def->zerror_file = ferror_file_func;
    pzlib_filefunc_def->opaque = NULL;
}

void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def) {
    pzlib_filefunc_def->zopen64_file = fopen64_file_func;
    pzlib_filefunc_def->zread_file = fread_file_func;
    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
    pzlib_filefunc_def->ztell64_file = ftell64_file_func;
    pzlib_filefunc_def->zseek64_file = fseek64_file_func;
    pzlib_filefunc_def->zclose_file = fclose_file_func;
    pzlib_filefunc_def->zerror_file = ferror_file_func;
    pzlib_filefunc_def->opaque = NULL;
}
Added compat/zlib/contrib/minizip/ioapi.h.


















































































































































































































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/* ioapi.h -- IO base function header for compress/uncompress .zip
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

         Changes

    Oct-2009 - Defined ZPOS64_T to fpos_t on windows and u_int64_t on linux. (might need to find a better why for this)
    Oct-2009 - Change to fseeko64, ftello64 and fopen64 so large files would work on linux.
               More if/def section may be needed to support other platforms
    Oct-2009 - Defined fxxxx64 calls to normal fopen/ftell/fseek so they would compile on windows.
                          (but you should use iowin32.c for windows instead)

*/

#ifndef _ZLIBIOAPI64_H
#define _ZLIBIOAPI64_H

#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))

  // Linux needs this to support file operation on files larger then 4+GB
  // But might need better if/def to select just the platforms that needs them.

        #ifndef __USE_FILE_OFFSET64
                #define __USE_FILE_OFFSET64
        #endif
        #ifndef __USE_LARGEFILE64
                #define __USE_LARGEFILE64
        #endif
        #ifndef _LARGEFILE64_SOURCE
                #define _LARGEFILE64_SOURCE
        #endif
        #ifndef _FILE_OFFSET_BIT
                #define _FILE_OFFSET_BIT 64
        #endif

#endif

#include <stdio.h>
#include <stdlib.h>
#include "zlib.h"

#if defined(USE_FILE32API)
#define fopen64 fopen
#define ftello64 ftell
#define fseeko64 fseek
#else
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
#define fopen64 fopen
#define ftello64 ftello
#define fseeko64 fseeko
#endif
#ifdef _MSC_VER
 #define fopen64 fopen
 #if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
  #define ftello64 _ftelli64
  #define fseeko64 _fseeki64
 #else // old MSC
  #define ftello64 ftell
  #define fseeko64 fseek
 #endif
#endif
#endif

/*
#ifndef ZPOS64_T
  #ifdef _WIN32
                #define ZPOS64_T fpos_t
  #else
    #include <stdint.h>
    #define ZPOS64_T uint64_t
  #endif
#endif
*/

#ifdef HAVE_MINIZIP64_CONF_H
#include "mz64conf.h"
#endif

/* a type chosen by DEFINE */
#ifdef HAVE_64BIT_INT_CUSTOM
typedef  64BIT_INT_CUSTOM_TYPE ZPOS64_T;
#else
#ifdef HAS_STDINT_H
#include "stdint.h"
typedef uint64_t ZPOS64_T;
#else



#if defined(_MSC_VER) || defined(__BORLANDC__)
typedef unsigned __int64 ZPOS64_T;
#else
typedef unsigned long long int ZPOS64_T;
#endif
#endif
#endif

/* Maximum unsigned 32-bit value used as placeholder for zip64 */
#ifndef MAXU32
#define MAXU32 (0xffffffff)
#endif

#ifdef __cplusplus
extern "C" {
#endif


#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)
#define ZLIB_FILEFUNC_SEEK_SET (0)

#define ZLIB_FILEFUNC_MODE_READ      (1)
#define ZLIB_FILEFUNC_MODE_WRITE     (2)
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)

#define ZLIB_FILEFUNC_MODE_EXISTING (4)
#define ZLIB_FILEFUNC_MODE_CREATE   (8)


#ifndef ZCALLBACK
 #if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
   #define ZCALLBACK CALLBACK
 #else
   #define ZCALLBACK
 #endif
#endif




typedef voidpf   (ZCALLBACK *open_file_func)      (voidpf opaque, const char* filename, int mode);
typedef uLong    (ZCALLBACK *read_file_func)      (voidpf opaque, voidpf stream, void* buf, uLong size);
typedef uLong    (ZCALLBACK *write_file_func)     (voidpf opaque, voidpf stream, const void* buf, uLong size);
typedef int      (ZCALLBACK *close_file_func)     (voidpf opaque, voidpf stream);
typedef int      (ZCALLBACK *testerror_file_func) (voidpf opaque, voidpf stream);

typedef long     (ZCALLBACK *tell_file_func)      (voidpf opaque, voidpf stream);
typedef long     (ZCALLBACK *seek_file_func)      (voidpf opaque, voidpf stream, uLong offset, int origin);


/* here is the "old" 32 bits structure */
typedef struct zlib_filefunc_def_s
{
    open_file_func      zopen_file;
    read_file_func      zread_file;
    write_file_func     zwrite_file;
    tell_file_func      ztell_file;
    seek_file_func      zseek_file;
    close_file_func     zclose_file;
    testerror_file_func zerror_file;
    voidpf              opaque;
} zlib_filefunc_def;

typedef ZPOS64_T (ZCALLBACK *tell64_file_func)    (voidpf opaque, voidpf stream);
typedef long     (ZCALLBACK *seek64_file_func)    (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin);
typedef voidpf   (ZCALLBACK *open64_file_func)    (voidpf opaque, const void* filename, int mode);

typedef struct zlib_filefunc64_def_s
{
    open64_file_func    zopen64_file;
    read_file_func      zread_file;
    write_file_func     zwrite_file;
    tell64_file_func    ztell64_file;
    seek64_file_func    zseek64_file;
    close_file_func     zclose_file;
    testerror_file_func zerror_file;
    voidpf              opaque;
} zlib_filefunc64_def;

void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def);
void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def);

/* now internal definition, only for zip.c and unzip.h */
typedef struct zlib_filefunc64_32_def_s
{
    zlib_filefunc64_def zfile_func64;
    open_file_func      zopen32_file;
    tell_file_func      ztell32_file;
    seek_file_func      zseek32_file;
} zlib_filefunc64_32_def;


#define ZREAD64(filefunc,filestream,buf,size)     ((*((filefunc).zfile_func64.zread_file))   ((filefunc).zfile_func64.opaque,filestream,buf,size))
#define ZWRITE64(filefunc,filestream,buf,size)    ((*((filefunc).zfile_func64.zwrite_file))  ((filefunc).zfile_func64.opaque,filestream,buf,size))
//#define ZTELL64(filefunc,filestream)            ((*((filefunc).ztell64_file)) ((filefunc).opaque,filestream))
//#define ZSEEK64(filefunc,filestream,pos,mode)   ((*((filefunc).zseek64_file)) ((filefunc).opaque,filestream,pos,mode))
#define ZCLOSE64(filefunc,filestream)             ((*((filefunc).zfile_func64.zclose_file))  ((filefunc).zfile_func64.opaque,filestream))
#define ZERROR64(filefunc,filestream)             ((*((filefunc).zfile_func64.zerror_file))  ((filefunc).zfile_func64.opaque,filestream))

voidpf call_zopen64(const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode);
long call_zseek64(const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin);
ZPOS64_T call_ztell64(const zlib_filefunc64_32_def* pfilefunc,voidpf filestream);

void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32);

#define ZOPEN64(filefunc,filename,mode)         (call_zopen64((&(filefunc)),(filename),(mode)))
#define ZTELL64(filefunc,filestream)            (call_ztell64((&(filefunc)),(filestream)))
#define ZSEEK64(filefunc,filestream,pos,mode)   (call_zseek64((&(filefunc)),(filestream),(pos),(mode)))

#ifdef __cplusplus
}
#endif

#endif
Added compat/zlib/contrib/minizip/iowin32.c.
























































































































































































































































































































































































































































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/* iowin32.c -- IO base function header for compress/uncompress .zip
     Version 1.1, February 14h, 2010
     part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

     For more info read MiniZip_info.txt

*/

#include <stdlib.h>

#include "zlib.h"
#include "ioapi.h"
#include "iowin32.h"

#ifndef INVALID_HANDLE_VALUE
#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
#endif

#ifndef INVALID_SET_FILE_POINTER
#define INVALID_SET_FILE_POINTER ((DWORD)-1)
#endif


// see Include/shared/winapifamily.h in the Windows Kit
#if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))

#if !defined(WINAPI_FAMILY_ONE_PARTITION)
#define WINAPI_FAMILY_ONE_PARTITION(PartitionSet, Partition) ((WINAPI_FAMILY & PartitionSet) == Partition)
#endif

#if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP)
#define IOWIN32_USING_WINRT_API 1
#endif
#endif

typedef struct
{
    HANDLE hf;
    int error;
} WIN32FILE_IOWIN;


static void win32_translate_open_mode(int mode,
                                      DWORD* lpdwDesiredAccess,
                                      DWORD* lpdwCreationDisposition,
                                      DWORD* lpdwShareMode,
                                      DWORD* lpdwFlagsAndAttributes) {
    *lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0;

    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
    {
        *lpdwDesiredAccess = GENERIC_READ;
        *lpdwCreationDisposition = OPEN_EXISTING;
        *lpdwShareMode = FILE_SHARE_READ;
    }
    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
    {
        *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
        *lpdwCreationDisposition = OPEN_EXISTING;
    }
    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
    {
        *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
        *lpdwCreationDisposition = CREATE_ALWAYS;
    }
}

static voidpf win32_build_iowin(HANDLE hFile) {
    voidpf ret=NULL;

    if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
    {
        WIN32FILE_IOWIN w32fiow;
        w32fiow.hf = hFile;
        w32fiow.error = 0;
        ret = malloc(sizeof(WIN32FILE_IOWIN));

        if (ret==NULL)
            CloseHandle(hFile);
        else
            *((WIN32FILE_IOWIN*)ret) = w32fiow;
    }
    return ret;
}

voidpf ZCALLBACK win32_open64_file_func(voidpf opaque, const void* filename, int mode) {
    const char* mode_fopen = NULL;
    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
    HANDLE hFile = NULL;

    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);

#ifdef IOWIN32_USING_WINRT_API
#ifdef UNICODE
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
#else
    if ((filename!=NULL) && (dwDesiredAccess != 0))
    {
        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
        MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
    }
#endif
#else
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
#endif

    return win32_build_iowin(hFile);
}


voidpf ZCALLBACK win32_open64_file_funcA(voidpf opaque, const void* filename, int mode) {
    const char* mode_fopen = NULL;
    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
    HANDLE hFile = NULL;

    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);

#ifdef IOWIN32_USING_WINRT_API
    if ((filename!=NULL) && (dwDesiredAccess != 0))
    {
        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
        MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
    }
#else
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
#endif

    return win32_build_iowin(hFile);
}


voidpf ZCALLBACK win32_open64_file_funcW(voidpf opaque, const void* filename, int mode) {
    const char* mode_fopen = NULL;
    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
    HANDLE hFile = NULL;

    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);

#ifdef IOWIN32_USING_WINRT_API
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFile2((LPCWSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition,NULL);
#else
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
#endif

    return win32_build_iowin(hFile);
}


voidpf ZCALLBACK win32_open_file_func(voidpf opaque, const char* filename, int mode) {
    const char* mode_fopen = NULL;
    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
    HANDLE hFile = NULL;

    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);

#ifdef IOWIN32_USING_WINRT_API
#ifdef UNICODE
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
#else
    if ((filename!=NULL) && (dwDesiredAccess != 0))
    {
        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
        MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
    }
#endif
#else
    if ((filename!=NULL) && (dwDesiredAccess != 0))
        hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
#endif

    return win32_build_iowin(hFile);
}


uLong ZCALLBACK win32_read_file_func(voidpf opaque, voidpf stream, void* buf,uLong size) {
    uLong ret=0;
    HANDLE hFile = NULL;
    if (stream!=NULL)
        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;

    if (hFile != NULL)
    {
        if (!ReadFile(hFile, buf, size, &ret, NULL))
        {
            DWORD dwErr = GetLastError();
            if (dwErr == ERROR_HANDLE_EOF)
                dwErr = 0;
            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
        }
    }

    return ret;
}


uLong ZCALLBACK win32_write_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size) {
    uLong ret=0;
    HANDLE hFile = NULL;
    if (stream!=NULL)
        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;

    if (hFile != NULL)
    {
        if (!WriteFile(hFile, buf, size, &ret, NULL))
        {
            DWORD dwErr = GetLastError();
            if (dwErr == ERROR_HANDLE_EOF)
                dwErr = 0;
            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
        }
    }

    return ret;
}

static BOOL MySetFilePointerEx(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *newPos, DWORD dwMoveMethod) {
#ifdef IOWIN32_USING_WINRT_API
    return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod);
#else
    LONG lHigh = pos.HighPart;
    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, dwMoveMethod);
    BOOL fOk = TRUE;
    if (dwNewPos == 0xFFFFFFFF)
        if (GetLastError() != NO_ERROR)
            fOk = FALSE;
    if ((newPos != NULL) && (fOk))
    {
        newPos->LowPart = dwNewPos;
        newPos->HighPart = lHigh;
    }
    return fOk;
#endif
}

long ZCALLBACK win32_tell_file_func(voidpf opaque, voidpf stream) {
    long ret=-1;
    HANDLE hFile = NULL;
    if (stream!=NULL)
        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
    if (hFile != NULL)
    {
        LARGE_INTEGER pos;
        pos.QuadPart = 0;

        if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT))
        {
            DWORD dwErr = GetLastError();
            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
            ret = -1;
        }
        else
            ret=(long)pos.LowPart;
    }
    return ret;
}

ZPOS64_T ZCALLBACK win32_tell64_file_func(voidpf opaque, voidpf stream) {
    ZPOS64_T ret= (ZPOS64_T)-1;
    HANDLE hFile = NULL;
    if (stream!=NULL)
        hFile = ((WIN32FILE_IOWIN*)stream)->hf;

    if (hFile)
    {
        LARGE_INTEGER pos;
        pos.QuadPart = 0;

        if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT))
        {
            DWORD dwErr = GetLastError();
            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
            ret = (ZPOS64_T)-1;
        }
        else
            ret=pos.QuadPart;
    }
    return ret;
}


long ZCALLBACK win32_seek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin) {
    DWORD dwMoveMethod=0xFFFFFFFF;
    HANDLE hFile = NULL;

    long ret=-1;
    if (stream!=NULL)
        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
    switch (origin)
    {
    case ZLIB_FILEFUNC_SEEK_CUR :
        dwMoveMethod = FILE_CURRENT;
        break;
    case ZLIB_FILEFUNC_SEEK_END :
        dwMoveMethod = FILE_END;
        break;
    case ZLIB_FILEFUNC_SEEK_SET :
        dwMoveMethod = FILE_BEGIN;
        break;
    default: return -1;
    }

    if (hFile != NULL)
    {
        LARGE_INTEGER pos;
        pos.QuadPart = offset;
        if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
        {
            DWORD dwErr = GetLastError();
            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
            ret = -1;
        }
        else
            ret=0;
    }
    return ret;
}

long ZCALLBACK win32_seek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) {
    DWORD dwMoveMethod=0xFFFFFFFF;
    HANDLE hFile = NULL;
    long ret=-1;

    if (stream!=NULL)
        hFile = ((WIN32FILE_IOWIN*)stream)->hf;

    switch (origin)
    {
        case ZLIB_FILEFUNC_SEEK_CUR :
            dwMoveMethod = FILE_CURRENT;
            break;
        case ZLIB_FILEFUNC_SEEK_END :
            dwMoveMethod = FILE_END;
            break;
        case ZLIB_FILEFUNC_SEEK_SET :
            dwMoveMethod = FILE_BEGIN;
            break;
        default: return -1;
    }

    if (hFile)
    {
        LARGE_INTEGER pos;
        pos.QuadPart = offset;
        if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
        {
            DWORD dwErr = GetLastError();
            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
            ret = -1;
        }
        else
            ret=0;
    }
    return ret;
}

int ZCALLBACK win32_close_file_func(voidpf opaque, voidpf stream) {
    int ret=-1;

    if (stream!=NULL)
    {
        HANDLE hFile;
        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
        if (hFile != NULL)
        {
            CloseHandle(hFile);
            ret=0;
        }
        free(stream);
    }
    return ret;
}

int ZCALLBACK win32_error_file_func(voidpf opaque, voidpf stream) {
    int ret=-1;
    if (stream!=NULL)
    {
        ret = ((WIN32FILE_IOWIN*)stream) -> error;
    }
    return ret;
}

void fill_win32_filefunc(zlib_filefunc_def* pzlib_filefunc_def) {
    pzlib_filefunc_def->zopen_file = win32_open_file_func;
    pzlib_filefunc_def->zread_file = win32_read_file_func;
    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
    pzlib_filefunc_def->ztell_file = win32_tell_file_func;
    pzlib_filefunc_def->zseek_file = win32_seek_file_func;
    pzlib_filefunc_def->zclose_file = win32_close_file_func;
    pzlib_filefunc_def->zerror_file = win32_error_file_func;
    pzlib_filefunc_def->opaque = NULL;
}

void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def) {
    pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
    pzlib_filefunc_def->zread_file = win32_read_file_func;
    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
    pzlib_filefunc_def->zclose_file = win32_close_file_func;
    pzlib_filefunc_def->zerror_file = win32_error_file_func;
    pzlib_filefunc_def->opaque = NULL;
}


void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def) {
    pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
    pzlib_filefunc_def->zread_file = win32_read_file_func;
    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
    pzlib_filefunc_def->zclose_file = win32_close_file_func;
    pzlib_filefunc_def->zerror_file = win32_error_file_func;
    pzlib_filefunc_def->opaque = NULL;
}


void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def) {
    pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
    pzlib_filefunc_def->zread_file = win32_read_file_func;
    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
    pzlib_filefunc_def->zclose_file = win32_close_file_func;
    pzlib_filefunc_def->zerror_file = win32_error_file_func;
    pzlib_filefunc_def->opaque = NULL;
}
Added compat/zlib/contrib/minizip/iowin32.h.




























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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
/* iowin32.h -- IO base function header for compress/uncompress .zip
     Version 1.1, February 14h, 2010
     part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

*/

#include <windows.h>


#ifdef __cplusplus
extern "C" {
#endif

void fill_win32_filefunc(zlib_filefunc_def* pzlib_filefunc_def);
void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def);
void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def);
void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def);

#ifdef __cplusplus
}
#endif
Added compat/zlib/contrib/minizip/make_vms.com.

























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$ if f$search("ioapi.h_orig") .eqs. "" then copy ioapi.h ioapi.h_orig
$ open/write zdef vmsdefs.h
$ copy sys$input: zdef
$ deck
#define unix
#define fill_zlib_filefunc64_32_def_from_filefunc32 fillzffunc64from
#define Write_Zip64EndOfCentralDirectoryLocator Write_Zip64EoDLocator
#define Write_Zip64EndOfCentralDirectoryRecord Write_Zip64EoDRecord
#define Write_EndOfCentralDirectoryRecord Write_EoDRecord
$ eod
$ close zdef
$ copy vmsdefs.h,ioapi.h_orig ioapi.h
$ cc/include=[--]/prefix=all ioapi.c
$ cc/include=[--]/prefix=all miniunz.c
$ cc/include=[--]/prefix=all unzip.c
$ cc/include=[--]/prefix=all minizip.c
$ cc/include=[--]/prefix=all zip.c
$ link miniunz,unzip,ioapi,[--]libz.olb/lib
$ link minizip,zip,ioapi,[--]libz.olb/lib
$ mcr []minizip test minizip_info.txt
$ mcr []miniunz -l test.zip
$ rename minizip_info.txt; minizip_info.txt_old
$ mcr []miniunz test.zip
$ delete test.zip;*
$exit
Added compat/zlib/contrib/minizip/miniunz.c.







































































































































































































































































































































































































































































































































































































































































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/*
   miniunz.c
   Version 1.1, February 14h, 2010
   sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications of Unzip for Zip64
         Copyright (C) 2007-2008 Even Rouault

         Modifications for Zip64 support on both zip and unzip
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
*/

#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
        #ifndef __USE_FILE_OFFSET64
                #define __USE_FILE_OFFSET64
        #endif
        #ifndef __USE_LARGEFILE64
                #define __USE_LARGEFILE64
        #endif
        #ifndef _LARGEFILE64_SOURCE
                #define _LARGEFILE64_SOURCE
        #endif
        #ifndef _FILE_OFFSET_BIT
                #define _FILE_OFFSET_BIT 64
        #endif
#endif

#if defined(__APPLE__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
#define FTELLO_FUNC(stream) ftello(stream)
#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
#else
#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
#define FTELLO_FUNC(stream) ftello64(stream)
#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
#endif


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>

#ifdef _WIN32
# include <direct.h>
# include <io.h>
#else
# include <unistd.h>
# include <utime.h>
#endif


#include "unzip.h"

#define CASESENSITIVITY (0)
#define WRITEBUFFERSIZE (8192)
#define MAXFILENAME (256)

#ifdef _WIN32
#define USEWIN32IOAPI
#include "iowin32.h"
#endif
/*
  mini unzip, demo of unzip package

  usage :
  Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]

  list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
    if it exists
*/


/* change_file_date : change the date/time of a file
    filename : the filename of the file where date/time must be modified
    dosdate : the new date at the MSDOS format (4 bytes)
    tmu_date : the SAME new date at the tm_unz format */
static void change_file_date(const char *filename, uLong dosdate, tm_unz tmu_date) {
#ifdef _WIN32
  HANDLE hFile;
  FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;

  hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE,
                      0,NULL,OPEN_EXISTING,0,NULL);
  GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
  DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
  LocalFileTimeToFileTime(&ftLocal,&ftm);
  SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
  CloseHandle(hFile);
#else
#if defined(unix) || defined(__APPLE__)
  (void)dosdate;
  struct utimbuf ut;
  struct tm newdate;
  newdate.tm_sec = tmu_date.tm_sec;
  newdate.tm_min=tmu_date.tm_min;
  newdate.tm_hour=tmu_date.tm_hour;
  newdate.tm_mday=tmu_date.tm_mday;
  newdate.tm_mon=tmu_date.tm_mon;
  if (tmu_date.tm_year > 1900)
      newdate.tm_year=tmu_date.tm_year - 1900;
  else
      newdate.tm_year=tmu_date.tm_year ;
  newdate.tm_isdst=-1;

  ut.actime=ut.modtime=mktime(&newdate);
  utime(filename,&ut);
#else
  (void)filename;
  (void)dosdate;
  (void)tmu_date;
#endif
#endif
}


/* mymkdir and change_file_date are not 100 % portable
   As I don't know well Unix, I wait feedback for the unix portion */

static int mymkdir(const char* dirname) {
    int ret=0;
#ifdef _WIN32
    ret = _mkdir(dirname);
#elif unix
    ret = mkdir (dirname,0775);
#elif __APPLE__
    ret = mkdir (dirname,0775);
#else
    (void)dirname;
#endif
    return ret;
}

static int makedir(const char *newdir) {
  char *buffer ;
  char *p;
  size_t len = strlen(newdir);

  if (len == 0)
    return 0;

  buffer = (char*)malloc(len+1);
        if (buffer==NULL)
        {
                printf("Error allocating memory\n");
                return UNZ_INTERNALERROR;
        }
  strcpy(buffer,newdir);

  if (buffer[len-1] == '/') {
    buffer[len-1] = '\0';
  }
  if (mymkdir(buffer) == 0)
    {
      free(buffer);
      return 1;
    }

  p = buffer+1;
  while (1)
    {
      char hold;

      while(*p && *p != '\\' && *p != '/')
        p++;
      hold = *p;
      *p = 0;
      if ((mymkdir(buffer) == -1) && (errno == ENOENT))
        {
          printf("couldn't create directory %s\n",buffer);
          free(buffer);
          return 0;
        }
      if (hold == 0)
        break;
      *p++ = hold;
    }
  free(buffer);
  return 1;
}

static void do_banner(void) {
    printf("MiniUnz 1.1, demo of zLib + Unz package written by Gilles Vollant\n");
    printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
}

static void do_help(void) {
    printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
           "  -e  Extract without pathname (junk paths)\n" \
           "  -x  Extract with pathname\n" \
           "  -v  list files\n" \
           "  -l  list files\n" \
           "  -d  directory to extract into\n" \
           "  -o  overwrite files without prompting\n" \
           "  -p  extract encrypted file using password\n\n");
}

static void Display64BitsSize(ZPOS64_T n, int size_char) {
  /* to avoid compatibility problem , we do here the conversion */
  char number[21];
  int offset=19;
  int pos_string = 19;
  number[20]=0;
  for (;;) {
      number[offset]=(char)((n%10)+'0');
      if (number[offset] != '0')
          pos_string=offset;
      n/=10;
      if (offset==0)
          break;
      offset--;
  }
  {
      int size_display_string = 19-pos_string;
      while (size_char > size_display_string)
      {
          size_char--;
          printf(" ");
      }
  }

  printf("%s",&number[pos_string]);
}

static int do_list(unzFile uf) {
    uLong i;
    unz_global_info64 gi;
    int err;

    err = unzGetGlobalInfo64(uf,&gi);
    if (err!=UNZ_OK)
        printf("error %d with zipfile in unzGetGlobalInfo \n",err);
    printf("  Length  Method     Size Ratio   Date    Time   CRC-32     Name\n");
    printf("  ------  ------     ---- -----   ----    ----   ------     ----\n");
    for (i=0;i<gi.number_entry;i++)
    {
        char filename_inzip[256];
        unz_file_info64 file_info;
        uLong ratio=0;
        const char *string_method = "";
        char charCrypt=' ';
        err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
        if (err!=UNZ_OK)
        {
            printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
            break;
        }
        if (file_info.uncompressed_size>0)
            ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);

        /* display a '*' if the file is encrypted */
        if ((file_info.flag & 1) != 0)
            charCrypt='*';

        if (file_info.compression_method==0)
            string_method="Stored";
        else
        if (file_info.compression_method==Z_DEFLATED)
        {
            uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
            if (iLevel==0)
              string_method="Defl:N";
            else if (iLevel==1)
              string_method="Defl:X";
            else if ((iLevel==2) || (iLevel==3))
              string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
        }
        else
        if (file_info.compression_method==Z_BZIP2ED)
        {
              string_method="BZip2 ";
        }
        else
            string_method="Unkn. ";

        Display64BitsSize(file_info.uncompressed_size,7);
        printf("  %6s%c",string_method,charCrypt);
        Display64BitsSize(file_info.compressed_size,7);
        printf(" %3lu%%  %2.2lu-%2.2lu-%2.2lu  %2.2lu:%2.2lu  %8.8lx   %s\n",
                ratio,
                (uLong)file_info.tmu_date.tm_mon + 1,
                (uLong)file_info.tmu_date.tm_mday,
                (uLong)file_info.tmu_date.tm_year % 100,
                (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
                (uLong)file_info.crc,filename_inzip);
        if ((i+1)<gi.number_entry)
        {
            err = unzGoToNextFile(uf);
            if (err!=UNZ_OK)
            {
                printf("error %d with zipfile in unzGoToNextFile\n",err);
                break;
            }
        }
    }

    return 0;
}


static int do_extract_currentfile(unzFile uf, const int* popt_extract_without_path, int* popt_overwrite, const char* password) {
    char filename_inzip[256];
    char* filename_withoutpath;
    char* p;
    int err=UNZ_OK;
    FILE *fout=NULL;
    void* buf;
    uInt size_buf;

    unz_file_info64 file_info;
    err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);

    if (err!=UNZ_OK)
    {
        printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
        return err;
    }

    size_buf = WRITEBUFFERSIZE;
    buf = (void*)malloc(size_buf);
    if (buf==NULL)
    {
        printf("Error allocating memory\n");
        return UNZ_INTERNALERROR;
    }

    p = filename_withoutpath = filename_inzip;
    while ((*p) != '\0')
    {
        if (((*p)=='/') || ((*p)=='\\'))
            filename_withoutpath = p+1;
        p++;
    }

    if ((*filename_withoutpath)=='\0')
    {
        if ((*popt_extract_without_path)==0)
        {
            printf("creating directory: %s\n",filename_inzip);
            mymkdir(filename_inzip);
        }
    }
    else
    {
        const char* write_filename;
        int skip=0;

        if ((*popt_extract_without_path)==0)
            write_filename = filename_inzip;
        else
            write_filename = filename_withoutpath;

        if (write_filename[0]!='\0')
        {
            const char* relative_check = write_filename;
            while (relative_check[1]!='\0')
            {
                if (relative_check[0]=='.' && relative_check[1]=='.')
                    write_filename = relative_check;
                relative_check++;
            }
        }

        while (write_filename[0]=='/' || write_filename[0]=='.')
            write_filename++;

        err = unzOpenCurrentFilePassword(uf,password);
        if (err!=UNZ_OK)
        {
            printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
        }

        if (((*popt_overwrite)==0) && (err==UNZ_OK))
        {
            char rep=0;
            FILE* ftestexist;
            ftestexist = FOPEN_FUNC(write_filename,"rb");
            if (ftestexist!=NULL)
            {
                fclose(ftestexist);
                do
                {
                    char answer[128];
                    int ret;

                    printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
                    ret = scanf("%1s",answer);
                    if (ret != 1)
                    {
                       exit(EXIT_FAILURE);
                    }
                    rep = answer[0] ;
                    if ((rep>='a') && (rep<='z'))
                        rep -= 0x20;
                }
                while ((rep!='Y') && (rep!='N') && (rep!='A'));
            }

            if (rep == 'N')
                skip = 1;

            if (rep == 'A')
                *popt_overwrite=1;
        }

        if ((skip==0) && (err==UNZ_OK))
        {
            fout=FOPEN_FUNC(write_filename,"wb");
            /* some zipfile don't contain directory alone before file */
            if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
                                (filename_withoutpath!=(char*)filename_inzip))
            {
                char c=*(filename_withoutpath-1);
                *(filename_withoutpath-1)='\0';
                makedir(write_filename);
                *(filename_withoutpath-1)=c;
                fout=FOPEN_FUNC(write_filename,"wb");
            }

            if (fout==NULL)
            {
                printf("error opening %s\n",write_filename);
            }
        }

        if (fout!=NULL)
        {
            printf(" extracting: %s\n",write_filename);

            do
            {
                err = unzReadCurrentFile(uf,buf,size_buf);
                if (err<0)
                {
                    printf("error %d with zipfile in unzReadCurrentFile\n",err);
                    break;
                }
                if (err>0)
                    if (fwrite(buf,(unsigned)err,1,fout)!=1)
                    {
                        printf("error in writing extracted file\n");
                        err=UNZ_ERRNO;
                        break;
                    }
            }
            while (err>0);
            if (fout)
                    fclose(fout);

            if (err==0)
                change_file_date(write_filename,file_info.dosDate,
                                 file_info.tmu_date);
        }

        if (err==UNZ_OK)
        {
            err = unzCloseCurrentFile (uf);
            if (err!=UNZ_OK)
            {
                printf("error %d with zipfile in unzCloseCurrentFile\n",err);
            }
        }
        else
            unzCloseCurrentFile(uf); /* don't lose the error */
    }

    free(buf);
    return err;
}


static int do_extract(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char* password) {
    uLong i;
    unz_global_info64 gi;
    int err;

    err = unzGetGlobalInfo64(uf,&gi);
    if (err!=UNZ_OK)
        printf("error %d with zipfile in unzGetGlobalInfo \n",err);

    for (i=0;i<gi.number_entry;i++)
    {
        if (do_extract_currentfile(uf,&opt_extract_without_path,
                                      &opt_overwrite,
                                      password) != UNZ_OK)
            break;

        if ((i+1)<gi.number_entry)
        {
            err = unzGoToNextFile(uf);
            if (err!=UNZ_OK)
            {
                printf("error %d with zipfile in unzGoToNextFile\n",err);
                break;
            }
        }
    }

    return 0;
}

static int do_extract_onefile(unzFile uf, const char* filename, int opt_extract_without_path, int opt_overwrite, const char* password) {
    if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
    {
        printf("file %s not found in the zipfile\n",filename);
        return 2;
    }

    if (do_extract_currentfile(uf,&opt_extract_without_path,
                                      &opt_overwrite,
                                      password) == UNZ_OK)
        return 0;
    else
        return 1;
}


int main(int argc, char *argv[]) {
    const char *zipfilename=NULL;
    const char *filename_to_extract=NULL;
    const char *password=NULL;
    char filename_try[MAXFILENAME+16] = "";
    int i;
    int ret_value=0;
    int opt_do_list=0;
    int opt_do_extract=1;
    int opt_do_extract_withoutpath=0;
    int opt_overwrite=0;
    int opt_extractdir=0;
    const char *dirname=NULL;
    unzFile uf=NULL;

    do_banner();
    if (argc==1)
    {
        do_help();
        return 0;
    }
    else
    {
        for (i=1;i<argc;i++)
        {
            if ((*argv[i])=='-')
            {
                const char *p=argv[i]+1;

                while ((*p)!='\0')
                {
                    char c=*(p++);
                    if ((c=='l') || (c=='L'))
                        opt_do_list = 1;
                    if ((c=='v') || (c=='V'))
                        opt_do_list = 1;
                    if ((c=='x') || (c=='X'))
                        opt_do_extract = 1;
                    if ((c=='e') || (c=='E'))
                        opt_do_extract = opt_do_extract_withoutpath = 1;
                    if ((c=='o') || (c=='O'))
                        opt_overwrite=1;
                    if ((c=='d') || (c=='D'))
                    {
                        opt_extractdir=1;
                        dirname=argv[i+1];
                    }

                    if (((c=='p') || (c=='P')) && (i+1<argc))
                    {
                        password=argv[i+1];
                        i++;
                    }
                }
            }
            else
            {
                if (zipfilename == NULL)
                    zipfilename = argv[i];
                else if ((filename_to_extract==NULL) && (!opt_extractdir))
                        filename_to_extract = argv[i] ;
            }
        }
    }

    if (zipfilename!=NULL)
    {

#        ifdef USEWIN32IOAPI
        zlib_filefunc64_def ffunc;
#        endif

        strncpy(filename_try, zipfilename,MAXFILENAME-1);
        /* strncpy doesn't append the trailing NULL, of the string is too long. */
        filename_try[ MAXFILENAME ] = '\0';

#        ifdef USEWIN32IOAPI
        fill_win32_filefunc64A(&ffunc);
        uf = unzOpen2_64(zipfilename,&ffunc);
#        else
        uf = unzOpen64(zipfilename);
#        endif
        if (uf==NULL)
        {
            strcat(filename_try,".zip");
#            ifdef USEWIN32IOAPI
            uf = unzOpen2_64(filename_try,&ffunc);
#            else
            uf = unzOpen64(filename_try);
#            endif
        }
    }

    if (uf==NULL)
    {
        printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
        return 1;
    }
    printf("%s opened\n",filename_try);

    if (opt_do_list==1)
        ret_value = do_list(uf);
    else if (opt_do_extract==1)
    {
#ifdef _WIN32
        if (opt_extractdir && _chdir(dirname))
#else
        if (opt_extractdir && chdir(dirname))
#endif
        {
          printf("Error changing into %s, aborting\n", dirname);
          exit(-1);
        }

        if (filename_to_extract == NULL)
            ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
        else
            ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
    }

    unzClose(uf);

    return ret_value;
}
Added compat/zlib/contrib/minizip/miniunzip.1.































































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.\"                                      Hey, EMACS: -*- nroff -*-
.TH miniunzip 1 "Nov 7, 2001"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
.\" .nh        disable hyphenation
.\" .hy        enable hyphenation
.\" .ad l      left justify
.\" .ad b      justify to both left and right margins
.\" .nf        disable filling
.\" .fi        enable filling
.\" .br        insert line break
.\" .sp <n>    insert n+1 empty lines
.\" for manpage-specific macros, see man(7)
.SH NAME
miniunzip - uncompress and examine ZIP archives
.SH SYNOPSIS
.B miniunzip
.RI [ -exvlo ]
zipfile [ files_to_extract ] [-d tempdir]
.SH DESCRIPTION
.B minizip
is a simple tool which allows the extraction of compressed file
archives in the ZIP format used by the MS-DOS utility PKZIP.  It was
written as a demonstration of the
.IR zlib (3)
library and therefore lack many of the features of the
.IR unzip (1)
program.
.SH OPTIONS
A number of options are supported.  With the exception of
.BI \-d\  tempdir
these must be supplied before any
other arguments and are:
.TP
.BI \-l\ ,\ \-\-v
List the files in the archive without extracting them.
.TP
.B \-o
Overwrite files without prompting for confirmation.
.TP
.B \-x
Extract files (default).
.PP
The
.I zipfile
argument is the name of the archive to process. The next argument can be used
to specify a single file to extract from the archive.

Lastly, the following option can be specified at the end of the command-line:
.TP
.BI \-d\  tempdir
Extract the archive in the directory
.I tempdir
rather than the current directory.
.SH SEE ALSO
.BR minizip (1),
.BR zlib (3),
.BR unzip (1).
.SH AUTHOR
This program was written by Gilles Vollant.  This manual page was
written by Mark Brown <broonie@sirena.org.uk>. The -d tempdir option
was added by Dirk Eddelbuettel <edd@debian.org>.
Added compat/zlib/contrib/minizip/minizip.1.














































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.\"                                      Hey, EMACS: -*- nroff -*-
.TH minizip 1 "May 2, 2001"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
.\" .nh        disable hyphenation
.\" .hy        enable hyphenation
.\" .ad l      left justify
.\" .ad b      justify to both left and right margins
.\" .nf        disable filling
.\" .fi        enable filling
.\" .br        insert line break
.\" .sp <n>    insert n+1 empty lines
.\" for manpage-specific macros, see man(7)
.SH NAME
minizip - create ZIP archives
.SH SYNOPSIS
.B minizip
.RI [ -o ]
zipfile [ " files" ... ]
.SH DESCRIPTION
.B minizip
is a simple tool which allows the creation of compressed file archives
in the ZIP format used by the MS-DOS utility PKZIP.  It was written as
a demonstration of the
.IR zlib (3)
library and therefore lack many of the features of the
.IR zip (1)
program.
.SH OPTIONS
The first argument supplied is the name of the ZIP archive to create or
.RI -o
in which case it is ignored and the second argument treated as the
name of the ZIP file.  If the ZIP file already exists it will be
overwritten.
.PP
Subsequent arguments specify a list of files to place in the ZIP
archive.  If none are specified then an empty archive will be created.
.SH SEE ALSO
.BR miniunzip (1),
.BR zlib (3),
.BR zip (1).
.SH AUTHOR
This program was written by Gilles Vollant.  This manual page was
written by Mark Brown <broonie@sirena.org.uk>.

Added compat/zlib/contrib/minizip/minizip.c.





























































































































































































































































































































































































































































































































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/*
   minizip.c
   Version 1.1, February 14h, 2010
   sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications of Unzip for Zip64
         Copyright (C) 2007-2008 Even Rouault

         Modifications for Zip64 support on both zip and unzip
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
*/


#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
        #ifndef __USE_FILE_OFFSET64
                #define __USE_FILE_OFFSET64
        #endif
        #ifndef __USE_LARGEFILE64
                #define __USE_LARGEFILE64
        #endif
        #ifndef _LARGEFILE64_SOURCE
                #define _LARGEFILE64_SOURCE
        #endif
        #ifndef _FILE_OFFSET_BIT
                #define _FILE_OFFSET_BIT 64
        #endif
#endif

#if defined(__APPLE__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
#define FTELLO_FUNC(stream) ftello(stream)
#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
#else
#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
#define FTELLO_FUNC(stream) ftello64(stream)
#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
#endif



#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <fcntl.h>

#ifdef _WIN32
# include <direct.h>
# include <io.h>
#else
# include <unistd.h>
# include <utime.h>
# include <sys/types.h>
# include <sys/stat.h>
#endif

#include "zip.h"

#ifdef _WIN32
        #define USEWIN32IOAPI
        #include "iowin32.h"
#endif



#define WRITEBUFFERSIZE (16384)
#define MAXFILENAME (256)

#ifdef _WIN32
/* f: name of file to get info on, tmzip: return value: access,
   modification and creation times, dt: dostime */
static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
  int ret = 0;
  {
      FILETIME ftLocal;
      HANDLE hFind;
      WIN32_FIND_DATAA ff32;

      hFind = FindFirstFileA(f,&ff32);
      if (hFind != INVALID_HANDLE_VALUE)
      {
        FileTimeToLocalFileTime(&(ff32.ftLastWriteTime),&ftLocal);
        FileTimeToDosDateTime(&ftLocal,((LPWORD)dt)+1,((LPWORD)dt)+0);
        FindClose(hFind);
        ret = 1;
      }
  }
  return ret;
}
#else
#if defined(unix) || defined(__APPLE__)
/* f: name of file to get info on, tmzip: return value: access,
   modification and creation times, dt: dostime */
static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
  (void)dt;
  int ret=0;
  struct stat s;        /* results of stat() */
  struct tm* filedate;
  time_t tm_t=0;

  if (strcmp(f,"-")!=0)
  {
    char name[MAXFILENAME+1];
    size_t len = strlen(f);
    if (len > MAXFILENAME)
      len = MAXFILENAME;

    strncpy(name, f,MAXFILENAME-1);
    /* strncpy doesn't append the trailing NULL, of the string is too long. */
    name[ MAXFILENAME ] = '\0';

    if (name[len - 1] == '/')
      name[len - 1] = '\0';
    /* not all systems allow stat'ing a file with / appended */
    if (stat(name,&s)==0)
    {
      tm_t = s.st_mtime;
      ret = 1;
    }
  }
  filedate = localtime(&tm_t);

  tmzip->tm_sec  = filedate->tm_sec;
  tmzip->tm_min  = filedate->tm_min;
  tmzip->tm_hour = filedate->tm_hour;
  tmzip->tm_mday = filedate->tm_mday;
  tmzip->tm_mon  = filedate->tm_mon ;
  tmzip->tm_year = filedate->tm_year;

  return ret;
}
#else
/* f: name of file to get info on, tmzip: return value: access,
   modification and creation times, dt: dostime */
static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
    (void)f;
    (void)tmzip;
    (void)dt;
    return 0;
}
#endif
#endif




static int check_exist_file(const char* filename) {
    FILE* ftestexist;
    int ret = 1;
    ftestexist = FOPEN_FUNC(filename,"rb");
    if (ftestexist==NULL)
        ret = 0;
    else
        fclose(ftestexist);
    return ret;
}

static void do_banner(void) {
    printf("MiniZip 1.1, demo of zLib + MiniZip64 package, written by Gilles Vollant\n");
    printf("more info on MiniZip at http://www.winimage.com/zLibDll/minizip.html\n\n");
}

static void do_help(void) {
    printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] [-j] file.zip [files_to_add]\n\n" \
           "  -o  Overwrite existing file.zip\n" \
           "  -a  Append to existing file.zip\n" \
           "  -0  Store only\n" \
           "  -1  Compress faster\n" \
           "  -9  Compress better\n\n" \
           "  -j  exclude path. store only the file name.\n\n");
}

/* calculate the CRC32 of a file,
   because to encrypt a file, we need known the CRC32 of the file before */
static int getFileCrc(const char* filenameinzip, void* buf, unsigned long size_buf, unsigned long* result_crc) {
   unsigned long calculate_crc=0;
   int err=ZIP_OK;
   FILE * fin = FOPEN_FUNC(filenameinzip,"rb");

   unsigned long size_read = 0;
   /* unsigned long total_read = 0; */
   if (fin==NULL)
   {
       err = ZIP_ERRNO;
   }

    if (err == ZIP_OK)
        do
        {
            err = ZIP_OK;
            size_read = fread(buf,1,size_buf,fin);
            if (size_read < size_buf)
                if (feof(fin)==0)
            {
                printf("error in reading %s\n",filenameinzip);
                err = ZIP_ERRNO;
            }

            if (size_read>0)
                calculate_crc = crc32_z(calculate_crc,buf,size_read);
            /* total_read += size_read; */

        } while ((err == ZIP_OK) && (size_read>0));

    if (fin)
        fclose(fin);

    *result_crc=calculate_crc;
    printf("file %s crc %lx\n", filenameinzip, calculate_crc);
    return err;
}

static int isLargeFile(const char* filename) {
  int largeFile = 0;
  ZPOS64_T pos = 0;
  FILE* pFile = FOPEN_FUNC(filename, "rb");

  if(pFile != NULL)
  {
    FSEEKO_FUNC(pFile, 0, SEEK_END);
    pos = (ZPOS64_T)FTELLO_FUNC(pFile);

                printf("File : %s is %llu bytes\n", filename, pos);

    if(pos >= 0xffffffff)
     largeFile = 1;

                fclose(pFile);
  }

 return largeFile;
}

int main(int argc, char *argv[]) {
    int i;
    int opt_overwrite=0;
    int opt_compress_level=Z_DEFAULT_COMPRESSION;
    int opt_exclude_path=0;
    int zipfilenamearg = 0;
    char filename_try[MAXFILENAME+16];
    int zipok;
    int err=0;
    size_t size_buf=0;
    void* buf=NULL;
    const char* password=NULL;


    do_banner();
    if (argc==1)
    {
        do_help();
        return 0;
    }
    else
    {
        for (i=1;i<argc;i++)
        {
            if ((*argv[i])=='-')
            {
                const char *p=argv[i]+1;

                while ((*p)!='\0')
                {
                    char c=*(p++);
                    if ((c=='o') || (c=='O'))
                        opt_overwrite = 1;
                    if ((c=='a') || (c=='A'))
                        opt_overwrite = 2;
                    if ((c>='0') && (c<='9'))
                        opt_compress_level = c-'0';
                    if ((c=='j') || (c=='J'))
                        opt_exclude_path = 1;

                    if (((c=='p') || (c=='P')) && (i+1<argc))
                    {
                        password=argv[i+1];
                        i++;
                    }
                }
            }
            else
            {
                if (zipfilenamearg == 0)
                {
                    zipfilenamearg = i ;
                }
            }
        }
    }

    size_buf = WRITEBUFFERSIZE;
    buf = (void*)malloc(size_buf);
    if (buf==NULL)
    {
        printf("Error allocating memory\n");
        return ZIP_INTERNALERROR;
    }

    if (zipfilenamearg==0)
    {
        zipok=0;
    }
    else
    {
        int i,len;
        int dot_found=0;

        zipok = 1 ;
        strncpy(filename_try, argv[zipfilenamearg],MAXFILENAME-1);
        /* strncpy doesn't append the trailing NULL, of the string is too long. */
        filename_try[ MAXFILENAME ] = '\0';

        len=(int)strlen(filename_try);
        for (i=0;i<len;i++)
            if (filename_try[i]=='.')
                dot_found=1;

        if (dot_found==0)
            strcat(filename_try,".zip");

        if (opt_overwrite==2)
        {
            /* if the file don't exist, we not append file */
            if (check_exist_file(filename_try)==0)
                opt_overwrite=1;
        }
        else
        if (opt_overwrite==0)
            if (check_exist_file(filename_try)!=0)
            {
                char rep=0;
                do
                {
                    char answer[128];
                    int ret;
                    printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
                    ret = scanf("%1s",answer);
                    if (ret != 1)
                    {
                       exit(EXIT_FAILURE);
                    }
                    rep = answer[0] ;
                    if ((rep>='a') && (rep<='z'))
                        rep -= 0x20;
                }
                while ((rep!='Y') && (rep!='N') && (rep!='A'));
                if (rep=='N')
                    zipok = 0;
                if (rep=='A')
                    opt_overwrite = 2;
            }
    }

    if (zipok==1)
    {
        zipFile zf;
        int errclose;
#        ifdef USEWIN32IOAPI
        zlib_filefunc64_def ffunc;
        fill_win32_filefunc64A(&ffunc);
        zf = zipOpen2_64(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc);
#        else
        zf = zipOpen64(filename_try,(opt_overwrite==2) ? 2 : 0);
#        endif

        if (zf == NULL)
        {
            printf("error opening %s\n",filename_try);
            err= ZIP_ERRNO;
        }
        else
            printf("creating %s\n",filename_try);

        for (i=zipfilenamearg+1;(i<argc) && (err==ZIP_OK);i++)
        {
            if (!((((*(argv[i]))=='-') || ((*(argv[i]))=='/')) &&
                  ((argv[i][1]=='o') || (argv[i][1]=='O') ||
                   (argv[i][1]=='a') || (argv[i][1]=='A') ||
                   (argv[i][1]=='p') || (argv[i][1]=='P') ||
                   ((argv[i][1]>='0') && (argv[i][1]<='9'))) &&
                  (strlen(argv[i]) == 2)))
            {
                FILE * fin = NULL;
                size_t size_read;
                const char* filenameinzip = argv[i];
                const char *savefilenameinzip;
                zip_fileinfo zi;
                unsigned long crcFile=0;
                int zip64 = 0;

                zi.tmz_date.tm_sec = zi.tmz_date.tm_min = zi.tmz_date.tm_hour =
                zi.tmz_date.tm_mday = zi.tmz_date.tm_mon = zi.tmz_date.tm_year = 0;
                zi.dosDate = 0;
                zi.internal_fa = 0;
                zi.external_fa = 0;
                filetime(filenameinzip,&zi.tmz_date,&zi.dosDate);

/*
                err = zipOpenNewFileInZip(zf,filenameinzip,&zi,
                                 NULL,0,NULL,0,NULL / * comment * /,
                                 (opt_compress_level != 0) ? Z_DEFLATED : 0,
                                 opt_compress_level);
*/
                if ((password != NULL) && (err==ZIP_OK))
                    err = getFileCrc(filenameinzip,buf,size_buf,&crcFile);

                zip64 = isLargeFile(filenameinzip);

                                                         /* The path name saved, should not include a leading slash. */
               /*if it did, windows/xp and dynazip couldn't read the zip file. */
                 savefilenameinzip = filenameinzip;
                 while( savefilenameinzip[0] == '\\' || savefilenameinzip[0] == '/' )
                 {
                     savefilenameinzip++;
                 }

                 /*should the zip file contain any path at all?*/
                 if( opt_exclude_path )
                 {
                     const char *tmpptr;
                     const char *lastslash = 0;
                     for( tmpptr = savefilenameinzip; *tmpptr; tmpptr++)
                     {
                         if( *tmpptr == '\\' || *tmpptr == '/')
                         {
                             lastslash = tmpptr;
                         }
                     }
                     if( lastslash != NULL )
                     {
                         savefilenameinzip = lastslash+1; // base filename follows last slash.
                     }
                 }

                 /**/
                err = zipOpenNewFileInZip3_64(zf,savefilenameinzip,&zi,
                                 NULL,0,NULL,0,NULL /* comment*/,
                                 (opt_compress_level != 0) ? Z_DEFLATED : 0,
                                 opt_compress_level,0,
                                 /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */
                                 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                 password,crcFile, zip64);

                if (err != ZIP_OK)
                    printf("error in opening %s in zipfile\n",filenameinzip);
                else
                {
                    fin = FOPEN_FUNC(filenameinzip,"rb");
                    if (fin==NULL)
                    {
                        err=ZIP_ERRNO;
                        printf("error in opening %s for reading\n",filenameinzip);
                    }
                }

                if (err == ZIP_OK)
                    do
                    {
                        err = ZIP_OK;
                        size_read = fread(buf,1,size_buf,fin);
                        if (size_read < size_buf)
                            if (feof(fin)==0)
                        {
                            printf("error in reading %s\n",filenameinzip);
                            err = ZIP_ERRNO;
                        }

                        if (size_read>0)
                        {
                            err = zipWriteInFileInZip (zf,buf,(unsigned)size_read);
                            if (err<0)
                            {
                                printf("error in writing %s in the zipfile\n",
                                                 filenameinzip);
                            }

                        }
                    } while ((err == ZIP_OK) && (size_read>0));

                if (fin)
                    fclose(fin);

                if (err<0)
                    err=ZIP_ERRNO;
                else
                {
                    err = zipCloseFileInZip(zf);
                    if (err!=ZIP_OK)
                        printf("error in closing %s in the zipfile\n",
                                    filenameinzip);
                }
            }
        }
        errclose = zipClose(zf,NULL);
        if (errclose != ZIP_OK)
            printf("error in closing %s\n",filename_try);
    }
    else
    {
       do_help();
    }

    free(buf);
    return 0;
}
Added compat/zlib/contrib/minizip/minizip.pc.in.












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prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@/minizip

Name: minizip
Description: Minizip zip file manipulation library
Requires:
Version: @PACKAGE_VERSION@
Libs: -L${libdir} -lminizip
Libs.private: -lz
Cflags: -I${includedir}
Added compat/zlib/contrib/minizip/mztools.c.





























































































































































































































































































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/*
  Additional tools for Minizip
  Code: Xavier Roche '2004
  License: Same as ZLIB (www.gzip.org)
*/

/* Code */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "zlib.h"
#include "unzip.h"

#define READ_8(adr)  ((unsigned char)*(adr))
#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )
#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) )

#define WRITE_8(buff, n) do { \
  *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \
} while(0)
#define WRITE_16(buff, n) do { \
  WRITE_8((unsigned char*)(buff), n); \
  WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \
} while(0)
#define WRITE_32(buff, n) do { \
  WRITE_16((unsigned char*)(buff), (n) & 0xffff); \
  WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \
} while(0)

extern int ZEXPORT unzRepair(const char* file, const char* fileOut, const char* fileOutTmp, uLong* nRecovered, uLong* bytesRecovered) {
  int err = Z_OK;
  FILE* fpZip = fopen(file, "rb");
  FILE* fpOut = fopen(fileOut, "wb");
  FILE* fpOutCD = fopen(fileOutTmp, "wb");
  if (fpZip != NULL &&  fpOut != NULL) {
    int entries = 0;
    uLong totalBytes = 0;
    char header[30];
    char filename[1024];
    char extra[1024];
    int offset = 0;
    int offsetCD = 0;
    while ( fread(header, 1, 30, fpZip) == 30 ) {
      int currentOffset = offset;

      /* File entry */
      if (READ_32(header) == 0x04034b50) {
        unsigned int version = READ_16(header + 4);
        unsigned int gpflag = READ_16(header + 6);
        unsigned int method = READ_16(header + 8);
        unsigned int filetime = READ_16(header + 10);
        unsigned int filedate = READ_16(header + 12);
        unsigned int crc = READ_32(header + 14); /* crc */
        unsigned int cpsize = READ_32(header + 18); /* compressed size */
        unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */
        unsigned int fnsize = READ_16(header + 26); /* file name length */
        unsigned int extsize = READ_16(header + 28); /* extra field length */
        filename[0] = extra[0] = '\0';

        /* Header */
        if (fwrite(header, 1, 30, fpOut) == 30) {
          offset += 30;
        } else {
          err = Z_ERRNO;
          break;
        }

        /* Filename */
        if (fnsize > 0) {
          if (fnsize < sizeof(filename)) {
            if (fread(filename, 1, fnsize, fpZip) == fnsize) {
                if (fwrite(filename, 1, fnsize, fpOut) == fnsize) {
                offset += fnsize;
              } else {
                err = Z_ERRNO;
                break;
              }
            } else {
              err = Z_ERRNO;
              break;
            }
          } else {
            err = Z_ERRNO;
            break;
          }
        } else {
          err = Z_STREAM_ERROR;
          break;
        }

        /* Extra field */
        if (extsize > 0) {
          if (extsize < sizeof(extra)) {
            if (fread(extra, 1, extsize, fpZip) == extsize) {
              if (fwrite(extra, 1, extsize, fpOut) == extsize) {
                offset += extsize;
                } else {
                err = Z_ERRNO;
                break;
              }
            } else {
              err = Z_ERRNO;
              break;
            }
          } else {
            err = Z_ERRNO;
            break;
          }
        }

        /* Data */
        {
          int dataSize = cpsize;
          if (dataSize == 0) {
            dataSize = uncpsize;
          }
          if (dataSize > 0) {
            char* data = malloc(dataSize);
            if (data != NULL) {
              if ((int)fread(data, 1, dataSize, fpZip) == dataSize) {
                if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) {
                  offset += dataSize;
                  totalBytes += dataSize;
                } else {
                  err = Z_ERRNO;
                }
              } else {
                err = Z_ERRNO;
              }
              free(data);
              if (err != Z_OK) {
                break;
              }
            } else {
              err = Z_MEM_ERROR;
              break;
            }
          }
        }

        /* Central directory entry */
        {
          char header[46];
          char* comment = "";
          int comsize = (int) strlen(comment);
          WRITE_32(header, 0x02014b50);
          WRITE_16(header + 4, version);
          WRITE_16(header + 6, version);
          WRITE_16(header + 8, gpflag);
          WRITE_16(header + 10, method);
          WRITE_16(header + 12, filetime);
          WRITE_16(header + 14, filedate);
          WRITE_32(header + 16, crc);
          WRITE_32(header + 20, cpsize);
          WRITE_32(header + 24, uncpsize);
          WRITE_16(header + 28, fnsize);
          WRITE_16(header + 30, extsize);
          WRITE_16(header + 32, comsize);
          WRITE_16(header + 34, 0);     /* disk # */
          WRITE_16(header + 36, 0);     /* int attrb */
          WRITE_32(header + 38, 0);     /* ext attrb */
          WRITE_32(header + 42, currentOffset);
          /* Header */
          if (fwrite(header, 1, 46, fpOutCD) == 46) {
            offsetCD += 46;

            /* Filename */
            if (fnsize > 0) {
              if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) {
                offsetCD += fnsize;
              } else {
                err = Z_ERRNO;
                break;
              }
            } else {
              err = Z_STREAM_ERROR;
              break;
            }

            /* Extra field */
            if (extsize > 0) {
              if (fwrite(extra, 1, extsize, fpOutCD) == extsize) {
                offsetCD += extsize;
              } else {
                err = Z_ERRNO;
                break;
              }
            }

            /* Comment field */
            if (comsize > 0) {
              if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) {
                offsetCD += comsize;
              } else {
                err = Z_ERRNO;
                break;
              }
            }


          } else {
            err = Z_ERRNO;
            break;
          }
        }

        /* Success */
        entries++;

      } else {
        break;
      }
    }

    /* Final central directory  */
    {
      int entriesZip = entries;
      char header[22];
      char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools";
      int comsize = (int) strlen(comment);
      if (entriesZip > 0xffff) {
        entriesZip = 0xffff;
      }
      WRITE_32(header, 0x06054b50);
      WRITE_16(header + 4, 0);    /* disk # */
      WRITE_16(header + 6, 0);    /* disk # */
      WRITE_16(header + 8, entriesZip);   /* hack */
      WRITE_16(header + 10, entriesZip);  /* hack */
      WRITE_32(header + 12, offsetCD);    /* size of CD */
      WRITE_32(header + 16, offset);      /* offset to CD */
      WRITE_16(header + 20, comsize);     /* comment */

      /* Header */
      if (fwrite(header, 1, 22, fpOutCD) == 22) {

        /* Comment field */
        if (comsize > 0) {
          if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) {
            err = Z_ERRNO;
          }
        }

      } else {
        err = Z_ERRNO;
      }
    }

    /* Final merge (file + central directory) */
    fclose(fpOutCD);
    if (err == Z_OK) {
      fpOutCD = fopen(fileOutTmp, "rb");
      if (fpOutCD != NULL) {
        int nRead;
        char buffer[8192];
        while ( (nRead = (int)fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) {
          if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) {
            err = Z_ERRNO;
            break;
          }
        }
        fclose(fpOutCD);
      }
    }

    /* Close */
    fclose(fpZip);
    fclose(fpOut);

    /* Wipe temporary file */
    (void)remove(fileOutTmp);

    /* Number of recovered entries */
    if (err == Z_OK) {
      if (nRecovered != NULL) {
        *nRecovered = entries;
      }
      if (bytesRecovered != NULL) {
        *bytesRecovered = totalBytes;
      }
    }
  } else {
    err = Z_STREAM_ERROR;
  }
  return err;
}
Added compat/zlib/contrib/minizip/mztools.h.





































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/*
  Additional tools for Minizip
  Code: Xavier Roche '2004
  License: Same as ZLIB (www.gzip.org)
*/

#ifndef _zip_tools_H
#define _zip_tools_H

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _ZLIB_H
#include "zlib.h"
#endif

#include "unzip.h"

/* Repair a ZIP file (missing central directory)
   file: file to recover
   fileOut: output file after recovery
   fileOutTmp: temporary file name used for recovery
*/
extern int ZEXPORT unzRepair(const char* file,
                             const char* fileOut,
                             const char* fileOutTmp,
                             uLong* nRecovered,
                             uLong* bytesRecovered);


#ifdef __cplusplus
}
#endif


#endif
Added compat/zlib/contrib/minizip/unzip.c.

































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* unzip.c -- IO for uncompress .zip files using zlib
   Version 1.1, February 14h, 2010
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications of Unzip for Zip64
         Copyright (C) 2007-2008 Even Rouault

         Modifications for Zip64 support on both zip and unzip
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt


  ------------------------------------------------------------------------------------
  Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of
  compatibility with older software. The following is from the original crypt.c.
  Code woven in by Terry Thorsen 1/2003.

  Copyright (c) 1990-2000 Info-ZIP.  All rights reserved.

  See the accompanying file LICENSE, version 2000-Apr-09 or later
  (the contents of which are also included in zip.h) for terms of use.
  If, for some reason, all these files are missing, the Info-ZIP license
  also may be found at:  ftp://ftp.info-zip.org/pub/infozip/license.html

        crypt.c (full version) by Info-ZIP.      Last revised:  [see crypt.h]

  The encryption/decryption parts of this source code (as opposed to the
  non-echoing password parts) were originally written in Europe.  The
  whole source package can be freely distributed, including from the USA.
  (Prior to January 2000, re-export from the US was a violation of US law.)

        This encryption code is a direct transcription of the algorithm from
  Roger Schlafly, described by Phil Katz in the file appnote.txt.  This
  file (appnote.txt) is distributed with the PKZIP program (even in the
  version without encryption capabilities).

        ------------------------------------------------------------------------------------

        Changes in unzip.c

        2007-2008 - Even Rouault - Addition of cpl_unzGetCurrentFileZStreamPos
  2007-2008 - Even Rouault - Decoration of symbol names unz* -> cpl_unz*
  2007-2008 - Even Rouault - Remove old C style function prototypes
  2007-2008 - Even Rouault - Add unzip support for ZIP64

        Copyright (C) 2007-2008 Even Rouault


  Oct-2009 - Mathias Svensson - Removed cpl_* from symbol names (Even Rouault added them but since this is now moved to a new project (minizip64) I renamed them again).
  Oct-2009 - Mathias Svensson - Fixed problem if uncompressed size was > 4G and compressed size was <4G
                                should only read the compressed/uncompressed size from the Zip64 format if
                                the size from normal header was 0xFFFFFFFF
  Oct-2009 - Mathias Svensson - Applied some bug fixes from patches received from Gilles Vollant
  Oct-2009 - Mathias Svensson - Applied support to unzip files with compression method BZIP2 (bzip2 lib is required)
                                Patch created by Daniel Borca

  Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer

  Copyright (C) 1998 - 2010 Gilles Vollant, Even Rouault, Mathias Svensson

*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifndef NOUNCRYPT
        #define NOUNCRYPT
#endif

#include "zlib.h"
#include "unzip.h"

#ifdef STDC
#  include <stddef.h>
#endif
#ifdef NO_ERRNO_H
    extern int errno;
#else
#   include <errno.h>
#endif


#ifndef local
#  define local static
#endif
/* compile with -Dlocal if your debugger can't find static symbols */


#ifndef CASESENSITIVITYDEFAULT_NO
#  if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES)
#    define CASESENSITIVITYDEFAULT_NO
#  endif
#endif


#ifndef UNZ_BUFSIZE
#define UNZ_BUFSIZE (16384)
#endif

#ifndef UNZ_MAXFILENAMEINZIP
#define UNZ_MAXFILENAMEINZIP (256)
#endif

#ifndef ALLOC
# define ALLOC(size) (malloc(size))
#endif

#define SIZECENTRALDIRITEM (0x2e)
#define SIZEZIPLOCALHEADER (0x1e)


const char unz_copyright[] =
   " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";

/* unz_file_info64_internal contain internal info about a file in zipfile*/
typedef struct unz_file_info64_internal_s
{
    ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */
} unz_file_info64_internal;


/* file_in_zip_read_info_s contain internal information about a file in zipfile,
    when reading and decompress it */
typedef struct
{
    char  *read_buffer;         /* internal buffer for compressed data */
    z_stream stream;            /* zLib stream structure for inflate */

#ifdef HAVE_BZIP2
    bz_stream bstream;          /* bzLib stream structure for bziped */
#endif

    ZPOS64_T pos_in_zipfile;       /* position in byte on the zipfile, for fseek*/
    uLong stream_initialised;   /* flag set if stream structure is initialised*/

    ZPOS64_T offset_local_extrafield;/* offset of the local extra field */
    uInt  size_local_extrafield;/* size of the local extra field */
    ZPOS64_T pos_local_extrafield;   /* position in the local extra field in read*/
    ZPOS64_T total_out_64;

    uLong crc32;                /* crc32 of all data uncompressed */
    uLong crc32_wait;           /* crc32 we must obtain after decompress all */
    ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */
    ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/
    zlib_filefunc64_32_def z_filefunc;
    voidpf filestream;        /* io structure of the zipfile */
    uLong compression_method;   /* compression method (0==store) */
    ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
    int   raw;
} file_in_zip64_read_info_s;


/* unz64_s contain internal information about the zipfile
*/
typedef struct
{
    zlib_filefunc64_32_def z_filefunc;
    int is64bitOpenFunction;
    voidpf filestream;        /* io structure of the zipfile */
    unz_global_info64 gi;       /* public global information */
    ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
    ZPOS64_T num_file;             /* number of the current file in the zipfile*/
    ZPOS64_T pos_in_central_dir;   /* pos of the current file in the central dir*/
    ZPOS64_T current_file_ok;      /* flag about the usability of the current file*/
    ZPOS64_T central_pos;          /* position of the beginning of the central dir*/

    ZPOS64_T size_central_dir;     /* size of the central directory  */
    ZPOS64_T offset_central_dir;   /* offset of start of central directory with
                                   respect to the starting disk number */

    unz_file_info64 cur_file_info; /* public info about the current file in zip*/
    unz_file_info64_internal cur_file_info_internal; /* private info about it*/
    file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current
                                        file if we are decompressing it */
    int encrypted;

    int isZip64;

#    ifndef NOUNCRYPT
    unsigned long keys[3];     /* keys defining the pseudo-random sequence */
    const z_crc_t* pcrc_32_tab;
#    endif
} unz64_s;


#ifndef NOUNCRYPT
#include "crypt.h"
#endif


/* ===========================================================================
   Reads a long in LSB order from the given gz_stream. Sets
*/

local int unz64local_getShort(const zlib_filefunc64_32_def* pzlib_filefunc_def,
                              voidpf filestream,
                              uLong *pX) {
    unsigned char c[2];
    int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,c,2);
    if (err==2)
    {
        *pX = c[0] | ((uLong)c[1] << 8);
        return UNZ_OK;
    }
    else
    {
        *pX = 0;
        if (ZERROR64(*pzlib_filefunc_def,filestream))
            return UNZ_ERRNO;
        else
            return UNZ_EOF;
    }
}

local int unz64local_getLong(const zlib_filefunc64_32_def* pzlib_filefunc_def,
                             voidpf filestream,
                             uLong *pX) {
    unsigned char c[4];
    int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,c,4);
    if (err==4)
    {
        *pX = c[0] | ((uLong)c[1] << 8) | ((uLong)c[2] << 16) | ((uLong)c[3] << 24);
        return UNZ_OK;
    }
    else
    {
        *pX = 0;
        if (ZERROR64(*pzlib_filefunc_def,filestream))
            return UNZ_ERRNO;
        else
            return UNZ_EOF;
    }
}


local int unz64local_getLong64(const zlib_filefunc64_32_def* pzlib_filefunc_def,
                               voidpf filestream,
                               ZPOS64_T *pX) {
    unsigned char c[8];
    int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,c,8);
    if (err==8)
    {
        *pX = c[0] | ((ZPOS64_T)c[1] << 8) | ((ZPOS64_T)c[2] << 16) | ((ZPOS64_T)c[3] << 24)
            | ((ZPOS64_T)c[4] << 32) | ((ZPOS64_T)c[5] << 40) | ((ZPOS64_T)c[6] << 48) | ((ZPOS64_T)c[7] << 56);
        return UNZ_OK;
    }
    else
    {
        *pX = 0;
        if (ZERROR64(*pzlib_filefunc_def,filestream))
            return UNZ_ERRNO;
        else
            return UNZ_EOF;
    }
}

/* My own strcmpi / strcasecmp */
local int strcmpcasenosensitive_internal(const char* fileName1, const char* fileName2) {
    for (;;)
    {
        char c1=*(fileName1++);
        char c2=*(fileName2++);
        if ((c1>='a') && (c1<='z'))
            c1 -= 0x20;
        if ((c2>='a') && (c2<='z'))
            c2 -= 0x20;
        if (c1=='\0')
            return ((c2=='\0') ? 0 : -1);
        if (c2=='\0')
            return 1;
        if (c1<c2)
            return -1;
        if (c1>c2)
            return 1;
    }
}


#ifdef  CASESENSITIVITYDEFAULT_NO
#define CASESENSITIVITYDEFAULTVALUE 2
#else
#define CASESENSITIVITYDEFAULTVALUE 1
#endif

#ifndef STRCMPCASENOSENTIVEFUNCTION
#define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal
#endif

/*
   Compare two filenames (fileName1,fileName2).
   If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
   If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
                                                                or strcasecmp)
   If iCaseSensitivity = 0, case sensitivity is default of your operating system
        (like 1 on Unix, 2 on Windows)

*/
extern int ZEXPORT unzStringFileNameCompare (const char*  fileName1,
                                             const char*  fileName2,
                                             int iCaseSensitivity) {
    if (iCaseSensitivity==0)
        iCaseSensitivity=CASESENSITIVITYDEFAULTVALUE;

    if (iCaseSensitivity==1)
        return strcmp(fileName1,fileName2);

    return STRCMPCASENOSENTIVEFUNCTION(fileName1,fileName2);
}

#ifndef BUFREADCOMMENT
#define BUFREADCOMMENT (0x400)
#endif

#ifndef CENTRALDIRINVALID
#define CENTRALDIRINVALID ((ZPOS64_T)(-1))
#endif

/*
  Locate the Central directory of a zipfile (at the end, just before
    the global comment)
*/
local ZPOS64_T unz64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) {
    unsigned char* buf;
    ZPOS64_T uSizeFile;
    ZPOS64_T uBackRead;
    ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
    ZPOS64_T uPosFound=CENTRALDIRINVALID;

    if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
        return CENTRALDIRINVALID;


    uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);

    if (uMaxBack>uSizeFile)
        uMaxBack = uSizeFile;

    buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
    if (buf==NULL)
        return CENTRALDIRINVALID;

    uBackRead = 4;
    while (uBackRead<uMaxBack)
    {
        uLong uReadSize;
        ZPOS64_T uReadPos ;
        int i;
        if (uBackRead+BUFREADCOMMENT>uMaxBack)
            uBackRead = uMaxBack;
        else
            uBackRead+=BUFREADCOMMENT;
        uReadPos = uSizeFile-uBackRead ;

        uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
                     (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
        if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
            break;

        if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
            break;

        for (i=(int)uReadSize-3; (i--)>0;)
            if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
                ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
            {
                uPosFound = uReadPos+(unsigned)i;
                break;
            }

        if (uPosFound!=CENTRALDIRINVALID)
            break;
    }
    free(buf);
    return uPosFound;
}


/*
  Locate the Central directory 64 of a zipfile (at the end, just before
    the global comment)
*/
local ZPOS64_T unz64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def,
                                             voidpf filestream) {
    unsigned char* buf;
    ZPOS64_T uSizeFile;
    ZPOS64_T uBackRead;
    ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
    ZPOS64_T uPosFound=CENTRALDIRINVALID;
    uLong uL;
                ZPOS64_T relativeOffset;

    if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
        return CENTRALDIRINVALID;


    uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);

    if (uMaxBack>uSizeFile)
        uMaxBack = uSizeFile;

    buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
    if (buf==NULL)
        return CENTRALDIRINVALID;

    uBackRead = 4;
    while (uBackRead<uMaxBack)
    {
        uLong uReadSize;
        ZPOS64_T uReadPos;
        int i;
        if (uBackRead+BUFREADCOMMENT>uMaxBack)
            uBackRead = uMaxBack;
        else
            uBackRead+=BUFREADCOMMENT;
        uReadPos = uSizeFile-uBackRead ;

        uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
                     (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
        if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
            break;

        if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
            break;

        for (i=(int)uReadSize-3; (i--)>0;)
            if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
                ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07))
            {
                uPosFound = uReadPos+(unsigned)i;
                break;
            }

        if (uPosFound!=CENTRALDIRINVALID)
            break;
    }
    free(buf);
    if (uPosFound == CENTRALDIRINVALID)
        return CENTRALDIRINVALID;

    /* Zip64 end of central directory locator */
    if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0)
        return CENTRALDIRINVALID;

    /* the signature, already checked */
    if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
        return CENTRALDIRINVALID;

    /* number of the disk with the start of the zip64 end of central directory */
    if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
        return CENTRALDIRINVALID;
    if (uL != 0)
        return CENTRALDIRINVALID;

    /* relative offset of the zip64 end of central directory record */
    if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK)
        return CENTRALDIRINVALID;

    /* total number of disks */
    if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
        return CENTRALDIRINVALID;
    if (uL != 1)
        return CENTRALDIRINVALID;

    /* Goto end of central directory record */
    if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0)
        return CENTRALDIRINVALID;

     /* the signature */
    if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
        return CENTRALDIRINVALID;

    if (uL != 0x06064b50)
        return CENTRALDIRINVALID;

    return relativeOffset;
}

/*
  Open a Zip file. path contain the full pathname (by example,
     on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer
     "zlib/zlib114.zip".
     If the zipfile cannot be opened (file doesn't exist or in not valid), the
       return value is NULL.
     Else, the return value is a unzFile Handle, usable with other function
       of this unzip package.
*/
local unzFile unzOpenInternal(const void *path,
                              zlib_filefunc64_32_def* pzlib_filefunc64_32_def,
                              int is64bitOpenFunction) {
    unz64_s us;
    unz64_s *s;
    ZPOS64_T central_pos;
    uLong   uL;

    uLong number_disk;          /* number of the current disk, used for
                                   spanning ZIP, unsupported, always 0*/
    uLong number_disk_with_CD;  /* number the disk with central dir, used
                                   for spanning ZIP, unsupported, always 0*/
    ZPOS64_T number_entry_CD;      /* total number of entries in
                                   the central dir
                                   (same than number_entry on nospan) */

    int err=UNZ_OK;

    if (unz_copyright[0]!=' ')
        return NULL;

    us.z_filefunc.zseek32_file = NULL;
    us.z_filefunc.ztell32_file = NULL;
    if (pzlib_filefunc64_32_def==NULL)
        fill_fopen64_filefunc(&us.z_filefunc.zfile_func64);
    else
        us.z_filefunc = *pzlib_filefunc64_32_def;
    us.is64bitOpenFunction = is64bitOpenFunction;



    us.filestream = ZOPEN64(us.z_filefunc,
                                                 path,
                                                 ZLIB_FILEFUNC_MODE_READ |
                                                 ZLIB_FILEFUNC_MODE_EXISTING);
    if (us.filestream==NULL)
        return NULL;

    central_pos = unz64local_SearchCentralDir64(&us.z_filefunc,us.filestream);
    if (central_pos!=CENTRALDIRINVALID)
    {
        uLong uS;
        ZPOS64_T uL64;

        us.isZip64 = 1;

        if (ZSEEK64(us.z_filefunc, us.filestream,
                                      central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
        err=UNZ_ERRNO;

        /* the signature, already checked */
        if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* size of zip64 end of central directory record */
        if (unz64local_getLong64(&us.z_filefunc, us.filestream,&uL64)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* version made by */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* version needed to extract */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&uS)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* number of this disk */
        if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* number of the disk with the start of the central directory */
        if (unz64local_getLong(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* total number of entries in the central directory on this disk */
        if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* total number of entries in the central directory */
        if (unz64local_getLong64(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK)
            err=UNZ_ERRNO;

        if ((number_entry_CD!=us.gi.number_entry) ||
            (number_disk_with_CD!=0) ||
            (number_disk!=0))
            err=UNZ_BADZIPFILE;

        /* size of the central directory */
        if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* offset of start of central directory with respect to the
          starting disk number */
        if (unz64local_getLong64(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
            err=UNZ_ERRNO;

        us.gi.size_comment = 0;
    }
    else
    {
        central_pos = unz64local_SearchCentralDir(&us.z_filefunc,us.filestream);
        if (central_pos==CENTRALDIRINVALID)
            err=UNZ_ERRNO;

        us.isZip64 = 0;

        if (ZSEEK64(us.z_filefunc, us.filestream,
                                        central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
            err=UNZ_ERRNO;

        /* the signature, already checked */
        if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* number of this disk */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* number of the disk with the start of the central directory */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
            err=UNZ_ERRNO;

        /* total number of entries in the central dir on this disk */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
            err=UNZ_ERRNO;
        us.gi.number_entry = uL;

        /* total number of entries in the central dir */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
            err=UNZ_ERRNO;
        number_entry_CD = uL;

        if ((number_entry_CD!=us.gi.number_entry) ||
            (number_disk_with_CD!=0) ||
            (number_disk!=0))
            err=UNZ_BADZIPFILE;

        /* size of the central directory */
        if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
            err=UNZ_ERRNO;
        us.size_central_dir = uL;

        /* offset of start of central directory with respect to the
            starting disk number */
        if (unz64local_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
            err=UNZ_ERRNO;
        us.offset_central_dir = uL;

        /* zipfile comment length */
        if (unz64local_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK)
            err=UNZ_ERRNO;
    }

    if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
        (err==UNZ_OK))
        err=UNZ_BADZIPFILE;

    if (err!=UNZ_OK)
    {
        ZCLOSE64(us.z_filefunc, us.filestream);
        return NULL;
    }

    us.byte_before_the_zipfile = central_pos -
                            (us.offset_central_dir+us.size_central_dir);
    us.central_pos = central_pos;
    us.pfile_in_zip_read = NULL;
    us.encrypted = 0;


    s=(unz64_s*)ALLOC(sizeof(unz64_s));
    if( s != NULL)
    {
        *s=us;
        unzGoToFirstFile((unzFile)s);
    }
    return (unzFile)s;
}


extern unzFile ZEXPORT unzOpen2(const char *path,
                                zlib_filefunc_def* pzlib_filefunc32_def) {
    if (pzlib_filefunc32_def != NULL)
    {
        zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
        fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def);
        return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 0);
    }
    else
        return unzOpenInternal(path, NULL, 0);
}

extern unzFile ZEXPORT unzOpen2_64(const void *path,
                                   zlib_filefunc64_def* pzlib_filefunc_def) {
    if (pzlib_filefunc_def != NULL)
    {
        zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
        zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
        zlib_filefunc64_32_def_fill.ztell32_file = NULL;
        zlib_filefunc64_32_def_fill.zseek32_file = NULL;
        return unzOpenInternal(path, &zlib_filefunc64_32_def_fill, 1);
    }
    else
        return unzOpenInternal(path, NULL, 1);
}

extern unzFile ZEXPORT unzOpen(const char *path) {
    return unzOpenInternal(path, NULL, 0);
}

extern unzFile ZEXPORT unzOpen64(const void *path) {
    return unzOpenInternal(path, NULL, 1);
}

/*
  Close a ZipFile opened with unzOpen.
  If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
    these files MUST be closed with unzCloseCurrentFile before call unzClose.
  return UNZ_OK if there is no problem. */
extern int ZEXPORT unzClose(unzFile file) {
    unz64_s* s;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;

    if (s->pfile_in_zip_read!=NULL)
        unzCloseCurrentFile(file);

    ZCLOSE64(s->z_filefunc, s->filestream);
    free(s);
    return UNZ_OK;
}


/*
  Write info about the ZipFile in the *pglobal_info structure.
  No preparation of the structure is needed
  return UNZ_OK if there is no problem. */
extern int ZEXPORT unzGetGlobalInfo64(unzFile file, unz_global_info64* pglobal_info) {
    unz64_s* s;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    *pglobal_info=s->gi;
    return UNZ_OK;
}

extern int ZEXPORT unzGetGlobalInfo(unzFile file, unz_global_info* pglobal_info32) {
    unz64_s* s;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    /* to do : check if number_entry is not truncated */
    pglobal_info32->number_entry = (uLong)s->gi.number_entry;
    pglobal_info32->size_comment = s->gi.size_comment;
    return UNZ_OK;
}
/*
   Translate date/time from Dos format to tm_unz (readable more easily)
*/
local void unz64local_DosDateToTmuDate(ZPOS64_T ulDosDate, tm_unz* ptm) {
    ZPOS64_T uDate;
    uDate = (ZPOS64_T)(ulDosDate>>16);
    ptm->tm_mday = (int)(uDate&0x1f) ;
    ptm->tm_mon =  (int)((((uDate)&0x1E0)/0x20)-1) ;
    ptm->tm_year = (int)(((uDate&0x0FE00)/0x0200)+1980) ;

    ptm->tm_hour = (int) ((ulDosDate &0xF800)/0x800);
    ptm->tm_min =  (int) ((ulDosDate&0x7E0)/0x20) ;
    ptm->tm_sec =  (int) (2*(ulDosDate&0x1f)) ;
}

/*
  Get Info about the current file in the zipfile, with internal only info
*/
local int unz64local_GetCurrentFileInfoInternal(unzFile file,
                                                unz_file_info64 *pfile_info,
                                                unz_file_info64_internal
                                                *pfile_info_internal,
                                                char *szFileName,
                                                uLong fileNameBufferSize,
                                                void *extraField,
                                                uLong extraFieldBufferSize,
                                                char *szComment,
                                                uLong commentBufferSize) {
    unz64_s* s;
    unz_file_info64 file_info;
    unz_file_info64_internal file_info_internal;
    int err=UNZ_OK;
    uLong uMagic;
    long lSeek=0;
    uLong uL;

    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    if (ZSEEK64(s->z_filefunc, s->filestream,
              s->pos_in_central_dir+s->byte_before_the_zipfile,
              ZLIB_FILEFUNC_SEEK_SET)!=0)
        err=UNZ_ERRNO;


    /* we check the magic */
    if (err==UNZ_OK)
    {
        if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
            err=UNZ_ERRNO;
        else if (uMagic!=0x02014b50)
            err=UNZ_BADZIPFILE;
    }

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.version_needed) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.flag) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.compression_method) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.dosDate) != UNZ_OK)
        err=UNZ_ERRNO;

    unz64local_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.crc) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
        err=UNZ_ERRNO;
    file_info.compressed_size = uL;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
        err=UNZ_ERRNO;
    file_info.uncompressed_size = uL;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_filename) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_extra) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.size_file_comment) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&file_info.internal_fa) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.external_fa) != UNZ_OK)
        err=UNZ_ERRNO;

                // relative offset of local header
    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uL) != UNZ_OK)
        err=UNZ_ERRNO;
    file_info_internal.offset_curfile = uL;

    lSeek+=file_info.size_filename;
    if ((err==UNZ_OK) && (szFileName!=NULL))
    {
        uLong uSizeRead ;
        if (file_info.size_filename<fileNameBufferSize)
        {
            *(szFileName+file_info.size_filename)='\0';
            uSizeRead = file_info.size_filename;
        }
        else
            uSizeRead = fileNameBufferSize;

        if ((file_info.size_filename>0) && (fileNameBufferSize>0))
            if (ZREAD64(s->z_filefunc, s->filestream,szFileName,uSizeRead)!=uSizeRead)
                err=UNZ_ERRNO;
        lSeek -= uSizeRead;
    }

    // Read extrafield
    if ((err==UNZ_OK) && (extraField!=NULL))
    {
        ZPOS64_T uSizeRead ;
        if (file_info.size_file_extra<extraFieldBufferSize)
            uSizeRead = file_info.size_file_extra;
        else
            uSizeRead = extraFieldBufferSize;

        if (lSeek!=0)
        {
            if (ZSEEK64(s->z_filefunc, s->filestream,(ZPOS64_T)lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
                lSeek=0;
            else
                err=UNZ_ERRNO;
        }

        if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
            if (ZREAD64(s->z_filefunc, s->filestream,extraField,(uLong)uSizeRead)!=uSizeRead)
                err=UNZ_ERRNO;

        lSeek += file_info.size_file_extra - (uLong)uSizeRead;
    }
    else
        lSeek += file_info.size_file_extra;


    if ((err==UNZ_OK) && (file_info.size_file_extra != 0))
    {
                                uLong acc = 0;

        // since lSeek now points to after the extra field we need to move back
        lSeek -= file_info.size_file_extra;

        if (lSeek!=0)
        {
            if (ZSEEK64(s->z_filefunc, s->filestream,(ZPOS64_T)lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
                lSeek=0;
            else
                err=UNZ_ERRNO;
        }

        while(acc < file_info.size_file_extra)
        {
            uLong headerId;
                                                uLong dataSize;

            if (unz64local_getShort(&s->z_filefunc, s->filestream,&headerId) != UNZ_OK)
                err=UNZ_ERRNO;

            if (unz64local_getShort(&s->z_filefunc, s->filestream,&dataSize) != UNZ_OK)
                err=UNZ_ERRNO;

            /* ZIP64 extra fields */
            if (headerId == 0x0001)
            {
                if(file_info.uncompressed_size == MAXU32)
                {
                    if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.uncompressed_size) != UNZ_OK)
                        err=UNZ_ERRNO;
                }

                if(file_info.compressed_size == MAXU32)
                {
                    if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info.compressed_size) != UNZ_OK)
                        err=UNZ_ERRNO;
                }

                if(file_info_internal.offset_curfile == MAXU32)
                {
                    /* Relative Header offset */
                    if (unz64local_getLong64(&s->z_filefunc, s->filestream,&file_info_internal.offset_curfile) != UNZ_OK)
                        err=UNZ_ERRNO;
                }

                if(file_info.disk_num_start == 0xffff)
                {
                    /* Disk Start Number */
                    if (unz64local_getLong(&s->z_filefunc, s->filestream,&file_info.disk_num_start) != UNZ_OK)
                        err=UNZ_ERRNO;
                }

            }
            else
            {
                if (ZSEEK64(s->z_filefunc, s->filestream,dataSize,ZLIB_FILEFUNC_SEEK_CUR)!=0)
                    err=UNZ_ERRNO;
            }

            acc += 2 + 2 + dataSize;
        }
    }

    if ((err==UNZ_OK) && (szComment!=NULL))
    {
        uLong uSizeRead ;
        if (file_info.size_file_comment<commentBufferSize)
        {
            *(szComment+file_info.size_file_comment)='\0';
            uSizeRead = file_info.size_file_comment;
        }
        else
            uSizeRead = commentBufferSize;

        if (lSeek!=0)
        {
            if (ZSEEK64(s->z_filefunc, s->filestream,(ZPOS64_T)lSeek,ZLIB_FILEFUNC_SEEK_CUR)==0)
                lSeek=0;
            else
                err=UNZ_ERRNO;
        }

        if ((file_info.size_file_comment>0) && (commentBufferSize>0))
            if (ZREAD64(s->z_filefunc, s->filestream,szComment,uSizeRead)!=uSizeRead)
                err=UNZ_ERRNO;
        lSeek+=file_info.size_file_comment - uSizeRead;
    }
    else
        lSeek+=file_info.size_file_comment;


    if ((err==UNZ_OK) && (pfile_info!=NULL))
        *pfile_info=file_info;

    if ((err==UNZ_OK) && (pfile_info_internal!=NULL))
        *pfile_info_internal=file_info_internal;

    return err;
}



/*
  Write info about the ZipFile in the *pglobal_info structure.
  No preparation of the structure is needed
  return UNZ_OK if there is no problem.
*/
extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file,
                                           unz_file_info64 * pfile_info,
                                           char * szFileName, uLong fileNameBufferSize,
                                           void *extraField, uLong extraFieldBufferSize,
                                           char* szComment,  uLong commentBufferSize) {
    return unz64local_GetCurrentFileInfoInternal(file,pfile_info,NULL,
                                                 szFileName,fileNameBufferSize,
                                                 extraField,extraFieldBufferSize,
                                                 szComment,commentBufferSize);
}

extern int ZEXPORT unzGetCurrentFileInfo(unzFile file,
                                         unz_file_info * pfile_info,
                                         char * szFileName, uLong fileNameBufferSize,
                                         void *extraField, uLong extraFieldBufferSize,
                                         char* szComment,  uLong commentBufferSize) {
    int err;
    unz_file_info64 file_info64;
    err = unz64local_GetCurrentFileInfoInternal(file,&file_info64,NULL,
                                                szFileName,fileNameBufferSize,
                                                extraField,extraFieldBufferSize,
                                                szComment,commentBufferSize);
    if ((err==UNZ_OK) && (pfile_info != NULL))
    {
        pfile_info->version = file_info64.version;
        pfile_info->version_needed = file_info64.version_needed;
        pfile_info->flag = file_info64.flag;
        pfile_info->compression_method = file_info64.compression_method;
        pfile_info->dosDate = file_info64.dosDate;
        pfile_info->crc = file_info64.crc;

        pfile_info->size_filename = file_info64.size_filename;
        pfile_info->size_file_extra = file_info64.size_file_extra;
        pfile_info->size_file_comment = file_info64.size_file_comment;

        pfile_info->disk_num_start = file_info64.disk_num_start;
        pfile_info->internal_fa = file_info64.internal_fa;
        pfile_info->external_fa = file_info64.external_fa;

        pfile_info->tmu_date = file_info64.tmu_date;


        pfile_info->compressed_size = (uLong)file_info64.compressed_size;
        pfile_info->uncompressed_size = (uLong)file_info64.uncompressed_size;

    }
    return err;
}
/*
  Set the current file of the zipfile to the first file.
  return UNZ_OK if there is no problem
*/
extern int ZEXPORT unzGoToFirstFile(unzFile file) {
    int err=UNZ_OK;
    unz64_s* s;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    s->pos_in_central_dir=s->offset_central_dir;
    s->num_file=0;
    err=unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
                                             &s->cur_file_info_internal,
                                             NULL,0,NULL,0,NULL,0);
    s->current_file_ok = (err == UNZ_OK);
    return err;
}

/*
  Set the current file of the zipfile to the next file.
  return UNZ_OK if there is no problem
  return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
*/
extern int ZEXPORT unzGoToNextFile(unzFile file) {
    unz64_s* s;
    int err;

    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    if (!s->current_file_ok)
        return UNZ_END_OF_LIST_OF_FILE;
    if (s->gi.number_entry != 0xffff)    /* 2^16 files overflow hack */
      if (s->num_file+1==s->gi.number_entry)
        return UNZ_END_OF_LIST_OF_FILE;

    s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
            s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment ;
    s->num_file++;
    err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
                                               &s->cur_file_info_internal,
                                               NULL,0,NULL,0,NULL,0);
    s->current_file_ok = (err == UNZ_OK);
    return err;
}


/*
  Try locate the file szFileName in the zipfile.
  For the iCaseSensitivity signification, see unzStringFileNameCompare

  return value :
  UNZ_OK if the file is found. It becomes the current file.
  UNZ_END_OF_LIST_OF_FILE if the file is not found
*/
extern int ZEXPORT unzLocateFile(unzFile file, const char *szFileName, int iCaseSensitivity) {
    unz64_s* s;
    int err;

    /* We remember the 'current' position in the file so that we can jump
     * back there if we fail.
     */
    unz_file_info64 cur_file_infoSaved;
    unz_file_info64_internal cur_file_info_internalSaved;
    ZPOS64_T num_fileSaved;
    ZPOS64_T pos_in_central_dirSaved;


    if (file==NULL)
        return UNZ_PARAMERROR;

    if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
        return UNZ_PARAMERROR;

    s=(unz64_s*)file;
    if (!s->current_file_ok)
        return UNZ_END_OF_LIST_OF_FILE;

    /* Save the current state */
    num_fileSaved = s->num_file;
    pos_in_central_dirSaved = s->pos_in_central_dir;
    cur_file_infoSaved = s->cur_file_info;
    cur_file_info_internalSaved = s->cur_file_info_internal;

    err = unzGoToFirstFile(file);

    while (err == UNZ_OK)
    {
        char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
        err = unzGetCurrentFileInfo64(file,NULL,
                                    szCurrentFileName,sizeof(szCurrentFileName)-1,
                                    NULL,0,NULL,0);
        if (err == UNZ_OK)
        {
            if (unzStringFileNameCompare(szCurrentFileName,
                                            szFileName,iCaseSensitivity)==0)
                return UNZ_OK;
            err = unzGoToNextFile(file);
        }
    }

    /* We failed, so restore the state of the 'current file' to where we
     * were.
     */
    s->num_file = num_fileSaved ;
    s->pos_in_central_dir = pos_in_central_dirSaved ;
    s->cur_file_info = cur_file_infoSaved;
    s->cur_file_info_internal = cur_file_info_internalSaved;
    return err;
}


/*
///////////////////////////////////////////
// Contributed by Ryan Haksi (mailto://cryogen@infoserve.net)
// I need random access
//
// Further optimization could be realized by adding an ability
// to cache the directory in memory. The goal being a single
// comprehensive file read to put the file I need in a memory.
*/

/*
typedef struct unz_file_pos_s
{
    ZPOS64_T pos_in_zip_directory;   // offset in file
    ZPOS64_T num_of_file;            // # of file
} unz_file_pos;
*/

extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos* file_pos) {
    unz64_s* s;

    if (file==NULL || file_pos==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    if (!s->current_file_ok)
        return UNZ_END_OF_LIST_OF_FILE;

    file_pos->pos_in_zip_directory  = s->pos_in_central_dir;
    file_pos->num_of_file           = s->num_file;

    return UNZ_OK;
}

extern int ZEXPORT unzGetFilePos(unzFile file, unz_file_pos* file_pos) {
    unz64_file_pos file_pos64;
    int err = unzGetFilePos64(file,&file_pos64);
    if (err==UNZ_OK)
    {
        file_pos->pos_in_zip_directory = (uLong)file_pos64.pos_in_zip_directory;
        file_pos->num_of_file = (uLong)file_pos64.num_of_file;
    }
    return err;
}

extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos* file_pos) {
    unz64_s* s;
    int err;

    if (file==NULL || file_pos==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;

    /* jump to the right spot */
    s->pos_in_central_dir = file_pos->pos_in_zip_directory;
    s->num_file           = file_pos->num_of_file;

    /* set the current file */
    err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
                                               &s->cur_file_info_internal,
                                               NULL,0,NULL,0,NULL,0);
    /* return results */
    s->current_file_ok = (err == UNZ_OK);
    return err;
}

extern int ZEXPORT unzGoToFilePos(unzFile file, unz_file_pos* file_pos) {
    unz64_file_pos file_pos64;
    if (file_pos == NULL)
        return UNZ_PARAMERROR;

    file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory;
    file_pos64.num_of_file = file_pos->num_of_file;
    return unzGoToFilePos64(file,&file_pos64);
}

/*
// Unzip Helper Functions - should be here?
///////////////////////////////////////////
*/

/*
  Read the local header of the current zipfile
  Check the coherency of the local header and info in the end of central
        directory about this file
  store in *piSizeVar the size of extra info in local header
        (filename and size of extra field data)
*/
local int unz64local_CheckCurrentFileCoherencyHeader(unz64_s* s, uInt* piSizeVar,
                                                     ZPOS64_T * poffset_local_extrafield,
                                                     uInt  * psize_local_extrafield) {
    uLong uMagic,uData,uFlags;
    uLong size_filename;
    uLong size_extra_field;
    int err=UNZ_OK;

    *piSizeVar = 0;
    *poffset_local_extrafield = 0;
    *psize_local_extrafield = 0;

    if (ZSEEK64(s->z_filefunc, s->filestream,s->cur_file_info_internal.offset_curfile +
                                s->byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
        return UNZ_ERRNO;


    if (err==UNZ_OK)
    {
        if (unz64local_getLong(&s->z_filefunc, s->filestream,&uMagic) != UNZ_OK)
            err=UNZ_ERRNO;
        else if (uMagic!=0x04034b50)
            err=UNZ_BADZIPFILE;
    }

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
        err=UNZ_ERRNO;
/*
    else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion))
        err=UNZ_BADZIPFILE;
*/
    if (unz64local_getShort(&s->z_filefunc, s->filestream,&uFlags) != UNZ_OK)
        err=UNZ_ERRNO;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&uData) != UNZ_OK)
        err=UNZ_ERRNO;
    else if ((err==UNZ_OK) && (uData!=s->cur_file_info.compression_method))
        err=UNZ_BADZIPFILE;

    if ((err==UNZ_OK) && (s->cur_file_info.compression_method!=0) &&
/* #ifdef HAVE_BZIP2 */
                         (s->cur_file_info.compression_method!=Z_BZIP2ED) &&
/* #endif */
                         (s->cur_file_info.compression_method!=Z_DEFLATED))
        err=UNZ_BADZIPFILE;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* date/time */
        err=UNZ_ERRNO;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* crc */
        err=UNZ_ERRNO;
    else if ((err==UNZ_OK) && (uData!=s->cur_file_info.crc) && ((uFlags & 8)==0))
        err=UNZ_BADZIPFILE;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size compr */
        err=UNZ_ERRNO;
    else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.compressed_size) && ((uFlags & 8)==0))
        err=UNZ_BADZIPFILE;

    if (unz64local_getLong(&s->z_filefunc, s->filestream,&uData) != UNZ_OK) /* size uncompr */
        err=UNZ_ERRNO;
    else if (uData != 0xFFFFFFFF && (err==UNZ_OK) && (uData!=s->cur_file_info.uncompressed_size) && ((uFlags & 8)==0))
        err=UNZ_BADZIPFILE;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_filename) != UNZ_OK)
        err=UNZ_ERRNO;
    else if ((err==UNZ_OK) && (size_filename!=s->cur_file_info.size_filename))
        err=UNZ_BADZIPFILE;

    *piSizeVar += (uInt)size_filename;

    if (unz64local_getShort(&s->z_filefunc, s->filestream,&size_extra_field) != UNZ_OK)
        err=UNZ_ERRNO;
    *poffset_local_extrafield= s->cur_file_info_internal.offset_curfile +
                                    SIZEZIPLOCALHEADER + size_filename;
    *psize_local_extrafield = (uInt)size_extra_field;

    *piSizeVar += (uInt)size_extra_field;

    return err;
}

/*
  Open for reading data the current file in the zipfile.
  If there is no error and the file is opened, the return value is UNZ_OK.
*/
extern int ZEXPORT unzOpenCurrentFile3(unzFile file, int* method,
                                       int* level, int raw, const char* password) {
    int err=UNZ_OK;
    uInt iSizeVar;
    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    ZPOS64_T offset_local_extrafield;  /* offset of the local extra field */
    uInt  size_local_extrafield;    /* size of the local extra field */
#    ifndef NOUNCRYPT
    char source[12];
#    else
    if (password != NULL)
        return UNZ_PARAMERROR;
#    endif

    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    if (!s->current_file_ok)
        return UNZ_PARAMERROR;

    if (s->pfile_in_zip_read != NULL)
        unzCloseCurrentFile(file);

    if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
        return UNZ_BADZIPFILE;

    pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s));
    if (pfile_in_zip_read_info==NULL)
        return UNZ_INTERNALERROR;

    pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
    pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
    pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
    pfile_in_zip_read_info->pos_local_extrafield=0;
    pfile_in_zip_read_info->raw=raw;

    if (pfile_in_zip_read_info->read_buffer==NULL)
    {
        free(pfile_in_zip_read_info);
        return UNZ_INTERNALERROR;
    }

    pfile_in_zip_read_info->stream_initialised=0;

    if (method!=NULL)
        *method = (int)s->cur_file_info.compression_method;

    if (level!=NULL)
    {
        *level = 6;
        switch (s->cur_file_info.flag & 0x06)
        {
          case 6 : *level = 1; break;
          case 4 : *level = 2; break;
          case 2 : *level = 9; break;
        }
    }

    if ((s->cur_file_info.compression_method!=0) &&
/* #ifdef HAVE_BZIP2 */
        (s->cur_file_info.compression_method!=Z_BZIP2ED) &&
/* #endif */
        (s->cur_file_info.compression_method!=Z_DEFLATED))

        err=UNZ_BADZIPFILE;

    pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
    pfile_in_zip_read_info->crc32=0;
    pfile_in_zip_read_info->total_out_64=0;
    pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method;
    pfile_in_zip_read_info->filestream=s->filestream;
    pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
    pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;

    pfile_in_zip_read_info->stream.total_out = 0;

    if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw))
    {
#ifdef HAVE_BZIP2
      pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0;
      pfile_in_zip_read_info->bstream.bzfree = (free_func)0;
      pfile_in_zip_read_info->bstream.opaque = (voidpf)0;
      pfile_in_zip_read_info->bstream.state = (voidpf)0;

      pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
      pfile_in_zip_read_info->stream.zfree = (free_func)0;
      pfile_in_zip_read_info->stream.opaque = (voidpf)0;
      pfile_in_zip_read_info->stream.next_in = (voidpf)0;
      pfile_in_zip_read_info->stream.avail_in = 0;

      err=BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0);
      if (err == Z_OK)
        pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED;
      else
      {
        free(pfile_in_zip_read_info->read_buffer);
        free(pfile_in_zip_read_info);
        return err;
      }
#else
      pfile_in_zip_read_info->raw=1;
#endif
    }
    else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw))
    {
      pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
      pfile_in_zip_read_info->stream.zfree = (free_func)0;
      pfile_in_zip_read_info->stream.opaque = (voidpf)0;
      pfile_in_zip_read_info->stream.next_in = 0;
      pfile_in_zip_read_info->stream.avail_in = 0;

      err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
      if (err == Z_OK)
        pfile_in_zip_read_info->stream_initialised=Z_DEFLATED;
      else
      {
        free(pfile_in_zip_read_info->read_buffer);
        free(pfile_in_zip_read_info);
        return err;
      }
        /* windowBits is passed < 0 to tell that there is no zlib header.
         * Note that in this case inflate *requires* an extra "dummy" byte
         * after the compressed stream in order to complete decompression and
         * return Z_STREAM_END.
         * In unzip, i don't wait absolutely Z_STREAM_END because I known the
         * size of both compressed and uncompressed data
         */
    }
    pfile_in_zip_read_info->rest_read_compressed =
            s->cur_file_info.compressed_size ;
    pfile_in_zip_read_info->rest_read_uncompressed =
            s->cur_file_info.uncompressed_size ;


    pfile_in_zip_read_info->pos_in_zipfile =
            s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
              iSizeVar;

    pfile_in_zip_read_info->stream.avail_in = (uInt)0;

    s->pfile_in_zip_read = pfile_in_zip_read_info;
                s->encrypted = 0;

#    ifndef NOUNCRYPT
    if (password != NULL)
    {
        int i;
        s->pcrc_32_tab = get_crc_table();
        init_keys(password,s->keys,s->pcrc_32_tab);
        if (ZSEEK64(s->z_filefunc, s->filestream,
                  s->pfile_in_zip_read->pos_in_zipfile +
                     s->pfile_in_zip_read->byte_before_the_zipfile,
                  SEEK_SET)!=0)
            return UNZ_INTERNALERROR;
        if(ZREAD64(s->z_filefunc, s->filestream,source, 12)<12)
            return UNZ_INTERNALERROR;

        for (i = 0; i<12; i++)
            zdecode(s->keys,s->pcrc_32_tab,source[i]);

        s->pfile_in_zip_read->pos_in_zipfile+=12;
        s->encrypted=1;
    }
#    endif


    return UNZ_OK;
}

extern int ZEXPORT unzOpenCurrentFile(unzFile file) {
    return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
}

extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file, const char* password) {
    return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
}

extern int ZEXPORT unzOpenCurrentFile2(unzFile file, int* method, int* level, int raw) {
    return unzOpenCurrentFile3(file, method, level, raw, NULL);
}

/** Addition for GDAL : START */

extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64(unzFile file) {
    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    s=(unz64_s*)file;
    if (file==NULL)
        return 0; //UNZ_PARAMERROR;
    pfile_in_zip_read_info=s->pfile_in_zip_read;
    if (pfile_in_zip_read_info==NULL)
        return 0; //UNZ_PARAMERROR;
    return pfile_in_zip_read_info->pos_in_zipfile +
                         pfile_in_zip_read_info->byte_before_the_zipfile;
}

/** Addition for GDAL : END */

/*
  Read bytes from the current file.
  buf contain buffer where data must be copied
  len the size of buf.

  return the number of byte copied if some bytes are copied
  return 0 if the end of file was reached
  return <0 with error code if there is an error
    (UNZ_ERRNO for IO error, or zLib error for uncompress error)
*/
extern int ZEXPORT unzReadCurrentFile(unzFile file, voidp buf, unsigned len) {
    int err=UNZ_OK;
    uInt iRead = 0;
    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    pfile_in_zip_read_info=s->pfile_in_zip_read;

    if (pfile_in_zip_read_info==NULL)
        return UNZ_PARAMERROR;


    if (pfile_in_zip_read_info->read_buffer == NULL)
        return UNZ_END_OF_LIST_OF_FILE;
    if (len==0)
        return 0;

    pfile_in_zip_read_info->stream.next_out = (Bytef*)buf;

    pfile_in_zip_read_info->stream.avail_out = (uInt)len;

    if ((len>pfile_in_zip_read_info->rest_read_uncompressed) &&
        (!(pfile_in_zip_read_info->raw)))
        pfile_in_zip_read_info->stream.avail_out =
            (uInt)pfile_in_zip_read_info->rest_read_uncompressed;

    if ((len>pfile_in_zip_read_info->rest_read_compressed+
           pfile_in_zip_read_info->stream.avail_in) &&
         (pfile_in_zip_read_info->raw))
        pfile_in_zip_read_info->stream.avail_out =
            (uInt)pfile_in_zip_read_info->rest_read_compressed+
            pfile_in_zip_read_info->stream.avail_in;

    while (pfile_in_zip_read_info->stream.avail_out>0)
    {
        if ((pfile_in_zip_read_info->stream.avail_in==0) &&
            (pfile_in_zip_read_info->rest_read_compressed>0))
        {
            uInt uReadThis = UNZ_BUFSIZE;
            if (pfile_in_zip_read_info->rest_read_compressed<uReadThis)
                uReadThis = (uInt)pfile_in_zip_read_info->rest_read_compressed;
            if (uReadThis == 0)
                return UNZ_EOF;
            if (ZSEEK64(pfile_in_zip_read_info->z_filefunc,
                      pfile_in_zip_read_info->filestream,
                      pfile_in_zip_read_info->pos_in_zipfile +
                         pfile_in_zip_read_info->byte_before_the_zipfile,
                         ZLIB_FILEFUNC_SEEK_SET)!=0)
                return UNZ_ERRNO;
            if (ZREAD64(pfile_in_zip_read_info->z_filefunc,
                      pfile_in_zip_read_info->filestream,
                      pfile_in_zip_read_info->read_buffer,
                      uReadThis)!=uReadThis)
                return UNZ_ERRNO;


#            ifndef NOUNCRYPT
            if(s->encrypted)
            {
                uInt i;
                for(i=0;i<uReadThis;i++)
                  pfile_in_zip_read_info->read_buffer[i] =
                      zdecode(s->keys,s->pcrc_32_tab,
                              pfile_in_zip_read_info->read_buffer[i]);
            }
#            endif


            pfile_in_zip_read_info->pos_in_zipfile += uReadThis;

            pfile_in_zip_read_info->rest_read_compressed-=uReadThis;

            pfile_in_zip_read_info->stream.next_in =
                (Bytef*)pfile_in_zip_read_info->read_buffer;
            pfile_in_zip_read_info->stream.avail_in = (uInt)uReadThis;
        }

        if ((pfile_in_zip_read_info->compression_method==0) || (pfile_in_zip_read_info->raw))
        {
            uInt uDoCopy,i ;

            if ((pfile_in_zip_read_info->stream.avail_in == 0) &&
                (pfile_in_zip_read_info->rest_read_compressed == 0))
                return (iRead==0) ? UNZ_EOF : (int)iRead;

            if (pfile_in_zip_read_info->stream.avail_out <
                            pfile_in_zip_read_info->stream.avail_in)
                uDoCopy = pfile_in_zip_read_info->stream.avail_out ;
            else
                uDoCopy = pfile_in_zip_read_info->stream.avail_in ;

            for (i=0;i<uDoCopy;i++)
                *(pfile_in_zip_read_info->stream.next_out+i) =
                        *(pfile_in_zip_read_info->stream.next_in+i);

            pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uDoCopy;

            pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,
                                pfile_in_zip_read_info->stream.next_out,
                                uDoCopy);
            pfile_in_zip_read_info->rest_read_uncompressed-=uDoCopy;
            pfile_in_zip_read_info->stream.avail_in -= uDoCopy;
            pfile_in_zip_read_info->stream.avail_out -= uDoCopy;
            pfile_in_zip_read_info->stream.next_out += uDoCopy;
            pfile_in_zip_read_info->stream.next_in += uDoCopy;
            pfile_in_zip_read_info->stream.total_out += uDoCopy;
            iRead += uDoCopy;
        }
        else if (pfile_in_zip_read_info->compression_method==Z_BZIP2ED)
        {
#ifdef HAVE_BZIP2
            uLong uTotalOutBefore,uTotalOutAfter;
            const Bytef *bufBefore;
            uLong uOutThis;

            pfile_in_zip_read_info->bstream.next_in        = (char*)pfile_in_zip_read_info->stream.next_in;
            pfile_in_zip_read_info->bstream.avail_in       = pfile_in_zip_read_info->stream.avail_in;
            pfile_in_zip_read_info->bstream.total_in_lo32  = pfile_in_zip_read_info->stream.total_in;
            pfile_in_zip_read_info->bstream.total_in_hi32  = 0;
            pfile_in_zip_read_info->bstream.next_out       = (char*)pfile_in_zip_read_info->stream.next_out;
            pfile_in_zip_read_info->bstream.avail_out      = pfile_in_zip_read_info->stream.avail_out;
            pfile_in_zip_read_info->bstream.total_out_lo32 = pfile_in_zip_read_info->stream.total_out;
            pfile_in_zip_read_info->bstream.total_out_hi32 = 0;

            uTotalOutBefore = pfile_in_zip_read_info->bstream.total_out_lo32;
            bufBefore = (const Bytef *)pfile_in_zip_read_info->bstream.next_out;

            err=BZ2_bzDecompress(&pfile_in_zip_read_info->bstream);

            uTotalOutAfter = pfile_in_zip_read_info->bstream.total_out_lo32;
            uOutThis = uTotalOutAfter-uTotalOutBefore;

            pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis;

            pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32,bufBefore, (uInt)(uOutThis));
            pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis;
            iRead += (uInt)(uTotalOutAfter - uTotalOutBefore);

            pfile_in_zip_read_info->stream.next_in   = (Bytef*)pfile_in_zip_read_info->bstream.next_in;
            pfile_in_zip_read_info->stream.avail_in  = pfile_in_zip_read_info->bstream.avail_in;
            pfile_in_zip_read_info->stream.total_in  = pfile_in_zip_read_info->bstream.total_in_lo32;
            pfile_in_zip_read_info->stream.next_out  = (Bytef*)pfile_in_zip_read_info->bstream.next_out;
            pfile_in_zip_read_info->stream.avail_out = pfile_in_zip_read_info->bstream.avail_out;
            pfile_in_zip_read_info->stream.total_out = pfile_in_zip_read_info->bstream.total_out_lo32;

            if (err==BZ_STREAM_END)
              return (iRead==0) ? UNZ_EOF : iRead;
            if (err!=BZ_OK)
              break;
#endif
        } // end Z_BZIP2ED
        else
        {
            ZPOS64_T uTotalOutBefore,uTotalOutAfter;
            const Bytef *bufBefore;
            ZPOS64_T uOutThis;
            int flush=Z_SYNC_FLUSH;

            uTotalOutBefore = pfile_in_zip_read_info->stream.total_out;
            bufBefore = pfile_in_zip_read_info->stream.next_out;

            /*
            if ((pfile_in_zip_read_info->rest_read_uncompressed ==
                     pfile_in_zip_read_info->stream.avail_out) &&
                (pfile_in_zip_read_info->rest_read_compressed == 0))
                flush = Z_FINISH;
            */
            err=inflate(&pfile_in_zip_read_info->stream,flush);

            if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL))
              err = Z_DATA_ERROR;

            uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
            /* Detect overflow, because z_stream.total_out is uLong (32 bits) */
            if (uTotalOutAfter<uTotalOutBefore)
                uTotalOutAfter += 1LL << 32; /* Add maximum value of uLong + 1 */
            uOutThis = uTotalOutAfter-uTotalOutBefore;

            pfile_in_zip_read_info->total_out_64 = pfile_in_zip_read_info->total_out_64 + uOutThis;

            pfile_in_zip_read_info->crc32 =
                crc32(pfile_in_zip_read_info->crc32,bufBefore,
                        (uInt)(uOutThis));

            pfile_in_zip_read_info->rest_read_uncompressed -=
                uOutThis;

            iRead += (uInt)(uTotalOutAfter - uTotalOutBefore);

            if (err==Z_STREAM_END)
                return (iRead==0) ? UNZ_EOF : (int)iRead;
            if (err!=Z_OK)
                break;
        }
    }

    if (err==Z_OK)
        return (int)iRead;
    return err;
}


/*
  Give the current position in uncompressed data
*/
extern z_off_t ZEXPORT unztell(unzFile file) {
    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    pfile_in_zip_read_info=s->pfile_in_zip_read;

    if (pfile_in_zip_read_info==NULL)
        return UNZ_PARAMERROR;

    return (z_off_t)pfile_in_zip_read_info->stream.total_out;
}

extern ZPOS64_T ZEXPORT unztell64(unzFile file) {

    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    if (file==NULL)
        return (ZPOS64_T)-1;
    s=(unz64_s*)file;
    pfile_in_zip_read_info=s->pfile_in_zip_read;

    if (pfile_in_zip_read_info==NULL)
        return (ZPOS64_T)-1;

    return pfile_in_zip_read_info->total_out_64;
}


/*
  return 1 if the end of file was reached, 0 elsewhere
*/
extern int ZEXPORT unzeof(unzFile file) {
    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    pfile_in_zip_read_info=s->pfile_in_zip_read;

    if (pfile_in_zip_read_info==NULL)
        return UNZ_PARAMERROR;

    if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
        return 1;
    else
        return 0;
}



/*
Read extra field from the current file (opened by unzOpenCurrentFile)
This is the local-header version of the extra field (sometimes, there is
more info in the local-header version than in the central-header)

  if buf==NULL, it return the size of the local extra field that can be read

  if buf!=NULL, len is the size of the buffer, the extra header is copied in
    buf.
  the return value is the number of bytes copied in buf, or (if <0)
    the error code
*/
extern int ZEXPORT unzGetLocalExtrafield(unzFile file, voidp buf, unsigned len) {
    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    uInt read_now;
    ZPOS64_T size_to_read;

    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    pfile_in_zip_read_info=s->pfile_in_zip_read;

    if (pfile_in_zip_read_info==NULL)
        return UNZ_PARAMERROR;

    size_to_read = (pfile_in_zip_read_info->size_local_extrafield -
                pfile_in_zip_read_info->pos_local_extrafield);

    if (buf==NULL)
        return (int)size_to_read;

    if (len>size_to_read)
        read_now = (uInt)size_to_read;
    else
        read_now = (uInt)len ;

    if (read_now==0)
        return 0;

    if (ZSEEK64(pfile_in_zip_read_info->z_filefunc,
              pfile_in_zip_read_info->filestream,
              pfile_in_zip_read_info->offset_local_extrafield +
              pfile_in_zip_read_info->pos_local_extrafield,
              ZLIB_FILEFUNC_SEEK_SET)!=0)
        return UNZ_ERRNO;

    if (ZREAD64(pfile_in_zip_read_info->z_filefunc,
              pfile_in_zip_read_info->filestream,
              buf,read_now)!=read_now)
        return UNZ_ERRNO;

    return (int)read_now;
}

/*
  Close the file in zip opened with unzOpenCurrentFile
  Return UNZ_CRCERROR if all the file was read but the CRC is not good
*/
extern int ZEXPORT unzCloseCurrentFile(unzFile file) {
    int err=UNZ_OK;

    unz64_s* s;
    file_in_zip64_read_info_s* pfile_in_zip_read_info;
    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;
    pfile_in_zip_read_info=s->pfile_in_zip_read;

    if (pfile_in_zip_read_info==NULL)
        return UNZ_PARAMERROR;


    if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
        (!pfile_in_zip_read_info->raw))
    {
        if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
            err=UNZ_CRCERROR;
    }


    free(pfile_in_zip_read_info->read_buffer);
    pfile_in_zip_read_info->read_buffer = NULL;
    if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED)
        inflateEnd(&pfile_in_zip_read_info->stream);
#ifdef HAVE_BZIP2
    else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED)
        BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream);
#endif


    pfile_in_zip_read_info->stream_initialised = 0;
    free(pfile_in_zip_read_info);

    s->pfile_in_zip_read=NULL;

    return err;
}


/*
  Get the global comment string of the ZipFile, in the szComment buffer.
  uSizeBuf is the size of the szComment buffer.
  return the number of byte copied or an error code <0
*/
extern int ZEXPORT unzGetGlobalComment(unzFile file, char * szComment, uLong uSizeBuf) {
    unz64_s* s;
    uLong uReadThis ;
    if (file==NULL)
        return (int)UNZ_PARAMERROR;
    s=(unz64_s*)file;

    uReadThis = uSizeBuf;
    if (uReadThis>s->gi.size_comment)
        uReadThis = s->gi.size_comment;

    if (ZSEEK64(s->z_filefunc,s->filestream,s->central_pos+22,ZLIB_FILEFUNC_SEEK_SET)!=0)
        return UNZ_ERRNO;

    if (uReadThis>0)
    {
      *szComment='\0';
      if (ZREAD64(s->z_filefunc,s->filestream,szComment,uReadThis)!=uReadThis)
        return UNZ_ERRNO;
    }

    if ((szComment != NULL) && (uSizeBuf > s->gi.size_comment))
        *(szComment+s->gi.size_comment)='\0';
    return (int)uReadThis;
}

/* Additions by RX '2004 */
extern ZPOS64_T ZEXPORT unzGetOffset64(unzFile file) {
    unz64_s* s;

    if (file==NULL)
          return 0; //UNZ_PARAMERROR;
    s=(unz64_s*)file;
    if (!s->current_file_ok)
      return 0;
    if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff)
      if (s->num_file==s->gi.number_entry)
         return 0;
    return s->pos_in_central_dir;
}

extern uLong ZEXPORT unzGetOffset(unzFile file) {
    ZPOS64_T offset64;

    if (file==NULL)
          return 0; //UNZ_PARAMERROR;
    offset64 = unzGetOffset64(file);
    return (uLong)offset64;
}

extern int ZEXPORT unzSetOffset64(unzFile file, ZPOS64_T pos) {
    unz64_s* s;
    int err;

    if (file==NULL)
        return UNZ_PARAMERROR;
    s=(unz64_s*)file;

    s->pos_in_central_dir = pos;
    s->num_file = s->gi.number_entry;      /* hack */
    err = unz64local_GetCurrentFileInfoInternal(file,&s->cur_file_info,
                                              &s->cur_file_info_internal,
                                              NULL,0,NULL,0,NULL,0);
    s->current_file_ok = (err == UNZ_OK);
    return err;
}

extern int ZEXPORT unzSetOffset (unzFile file, uLong pos) {
    return unzSetOffset64(file,pos);
}
Added compat/zlib/contrib/minizip/unzip.h.





















































































































































































































































































































































































































































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/* unzip.h -- IO for uncompress .zip files using zlib
   Version 1.1, February 14h, 2010
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications of Unzip for Zip64
         Copyright (C) 2007-2008 Even Rouault

         Modifications for Zip64 support on both zip and unzip
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

         ---------------------------------------------------------------------------------

        Condition of use and distribution are the same than zlib :

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  ---------------------------------------------------------------------------------

        Changes

        See header of unzip64.c

*/

#ifndef _unz64_H
#define _unz64_H

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _ZLIB_H
#include "zlib.h"
#endif

#ifndef  _ZLIBIOAPI_H
#include "ioapi.h"
#endif

#ifdef HAVE_BZIP2
#include "bzlib.h"
#endif

#define Z_BZIP2ED 12

#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
/* like the STRICT of WIN32, we define a pointer that cannot be converted
    from (void*) without cast */
typedef struct TagunzFile__ { int unused; } unzFile__;
typedef unzFile__ *unzFile;
#else
typedef voidp unzFile;
#endif


#define UNZ_OK                          (0)
#define UNZ_END_OF_LIST_OF_FILE         (-100)
#define UNZ_ERRNO                       (Z_ERRNO)
#define UNZ_EOF                         (0)
#define UNZ_PARAMERROR                  (-102)
#define UNZ_BADZIPFILE                  (-103)
#define UNZ_INTERNALERROR               (-104)
#define UNZ_CRCERROR                    (-105)

/* tm_unz contain date/time info */
typedef struct tm_unz_s
{
    int tm_sec;             /* seconds after the minute - [0,59] */
    int tm_min;             /* minutes after the hour - [0,59] */
    int tm_hour;            /* hours since midnight - [0,23] */
    int tm_mday;            /* day of the month - [1,31] */
    int tm_mon;             /* months since January - [0,11] */
    int tm_year;            /* years - [1980..2044] */
} tm_unz;

/* unz_global_info structure contain global data about the ZIPfile
   These data comes from the end of central dir */
typedef struct unz_global_info64_s
{
    ZPOS64_T number_entry;         /* total number of entries in
                                     the central dir on this disk */
    uLong size_comment;         /* size of the global comment of the zipfile */
} unz_global_info64;

typedef struct unz_global_info_s
{
    uLong number_entry;         /* total number of entries in
                                     the central dir on this disk */
    uLong size_comment;         /* size of the global comment of the zipfile */
} unz_global_info;

/* unz_file_info contain information about a file in the zipfile */
typedef struct unz_file_info64_s
{
    uLong version;              /* version made by                 2 bytes */
    uLong version_needed;       /* version needed to extract       2 bytes */
    uLong flag;                 /* general purpose bit flag        2 bytes */
    uLong compression_method;   /* compression method              2 bytes */
    uLong dosDate;              /* last mod file date in Dos fmt   4 bytes */
    uLong crc;                  /* crc-32                          4 bytes */
    ZPOS64_T compressed_size;   /* compressed size                 8 bytes */
    ZPOS64_T uncompressed_size; /* uncompressed size               8 bytes */
    uLong size_filename;        /* filename length                 2 bytes */
    uLong size_file_extra;      /* extra field length              2 bytes */
    uLong size_file_comment;    /* file comment length             2 bytes */

    uLong disk_num_start;       /* disk number start               2 bytes */
    uLong internal_fa;          /* internal file attributes        2 bytes */
    uLong external_fa;          /* external file attributes        4 bytes */

    tm_unz tmu_date;
} unz_file_info64;

typedef struct unz_file_info_s
{
    uLong version;              /* version made by                 2 bytes */
    uLong version_needed;       /* version needed to extract       2 bytes */
    uLong flag;                 /* general purpose bit flag        2 bytes */
    uLong compression_method;   /* compression method              2 bytes */
    uLong dosDate;              /* last mod file date in Dos fmt   4 bytes */
    uLong crc;                  /* crc-32                          4 bytes */
    uLong compressed_size;      /* compressed size                 4 bytes */
    uLong uncompressed_size;    /* uncompressed size               4 bytes */
    uLong size_filename;        /* filename length                 2 bytes */
    uLong size_file_extra;      /* extra field length              2 bytes */
    uLong size_file_comment;    /* file comment length             2 bytes */

    uLong disk_num_start;       /* disk number start               2 bytes */
    uLong internal_fa;          /* internal file attributes        2 bytes */
    uLong external_fa;          /* external file attributes        4 bytes */

    tm_unz tmu_date;
} unz_file_info;

extern int ZEXPORT unzStringFileNameCompare(const char* fileName1,
                                            const char* fileName2,
                                            int iCaseSensitivity);
/*
   Compare two filenames (fileName1,fileName2).
   If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
   If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
                                or strcasecmp)
   If iCaseSensitivity = 0, case sensitivity is default of your operating system
    (like 1 on Unix, 2 on Windows)
*/


extern unzFile ZEXPORT unzOpen(const char *path);
extern unzFile ZEXPORT unzOpen64(const void *path);
/*
  Open a Zip file. path contain the full pathname (by example,
     on a Windows XP computer "c:\\zlib\\zlib113.zip" or on an Unix computer
     "zlib/zlib113.zip".
     If the zipfile cannot be opened (file don't exist or in not valid), the
       return value is NULL.
     Else, the return value is a unzFile Handle, usable with other function
       of this unzip package.
     the "64" function take a const void* pointer, because the path is just the
       value passed to the open64_file_func callback.
     Under Windows, if UNICODE is defined, using fill_fopen64_filefunc, the path
       is a pointer to a wide unicode string (LPCTSTR is LPCWSTR), so const char*
       does not describe the reality
*/


extern unzFile ZEXPORT unzOpen2(const char *path,
                                zlib_filefunc_def* pzlib_filefunc_def);
/*
   Open a Zip file, like unzOpen, but provide a set of file low level API
      for read/write the zip file (see ioapi.h)
*/

extern unzFile ZEXPORT unzOpen2_64(const void *path,
                                   zlib_filefunc64_def* pzlib_filefunc_def);
/*
   Open a Zip file, like unz64Open, but provide a set of file low level API
      for read/write the zip file (see ioapi.h)
*/

extern int ZEXPORT unzClose(unzFile file);
/*
  Close a ZipFile opened with unzOpen.
  If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
    these files MUST be closed with unzCloseCurrentFile before call unzClose.
  return UNZ_OK if there is no problem. */

extern int ZEXPORT unzGetGlobalInfo(unzFile file,
                                    unz_global_info *pglobal_info);

extern int ZEXPORT unzGetGlobalInfo64(unzFile file,
                                      unz_global_info64 *pglobal_info);
/*
  Write info about the ZipFile in the *pglobal_info structure.
  No preparation of the structure is needed
  return UNZ_OK if there is no problem. */


extern int ZEXPORT unzGetGlobalComment(unzFile file,
                                       char *szComment,
                                       uLong uSizeBuf);
/*
  Get the global comment string of the ZipFile, in the szComment buffer.
  uSizeBuf is the size of the szComment buffer.
  return the number of byte copied or an error code <0
*/


/***************************************************************************/
/* Unzip package allow you browse the directory of the zipfile */

extern int ZEXPORT unzGoToFirstFile(unzFile file);
/*
  Set the current file of the zipfile to the first file.
  return UNZ_OK if there is no problem
*/

extern int ZEXPORT unzGoToNextFile(unzFile file);
/*
  Set the current file of the zipfile to the next file.
  return UNZ_OK if there is no problem
  return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
*/

extern int ZEXPORT unzLocateFile(unzFile file,
                                 const char *szFileName,
                                 int iCaseSensitivity);
/*
  Try locate the file szFileName in the zipfile.
  For the iCaseSensitivity signification, see unzStringFileNameCompare

  return value :
  UNZ_OK if the file is found. It becomes the current file.
  UNZ_END_OF_LIST_OF_FILE if the file is not found
*/


/* ****************************************** */
/* Ryan supplied functions */
/* unz_file_info contain information about a file in the zipfile */
typedef struct unz_file_pos_s
{
    uLong pos_in_zip_directory;   /* offset in zip file directory */
    uLong num_of_file;            /* # of file */
} unz_file_pos;

extern int ZEXPORT unzGetFilePos(
    unzFile file,
    unz_file_pos* file_pos);

extern int ZEXPORT unzGoToFilePos(
    unzFile file,
    unz_file_pos* file_pos);

typedef struct unz64_file_pos_s
{
    ZPOS64_T pos_in_zip_directory;   /* offset in zip file directory */
    ZPOS64_T num_of_file;            /* # of file */
} unz64_file_pos;

extern int ZEXPORT unzGetFilePos64(
    unzFile file,
    unz64_file_pos* file_pos);

extern int ZEXPORT unzGoToFilePos64(
    unzFile file,
    const unz64_file_pos* file_pos);

/* ****************************************** */

extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file,
                                           unz_file_info64 *pfile_info,
                                           char *szFileName,
                                           uLong fileNameBufferSize,
                                           void *extraField,
                                           uLong extraFieldBufferSize,
                                           char *szComment,
                                           uLong commentBufferSize);

extern int ZEXPORT unzGetCurrentFileInfo(unzFile file,
                                         unz_file_info *pfile_info,
                                         char *szFileName,
                                         uLong fileNameBufferSize,
                                         void *extraField,
                                         uLong extraFieldBufferSize,
                                         char *szComment,
                                         uLong commentBufferSize);
/*
  Get Info about the current file
  if pfile_info!=NULL, the *pfile_info structure will contain some info about
        the current file
  if szFileName!=NULL, the filename string will be copied in szFileName
            (fileNameBufferSize is the size of the buffer)
  if extraField!=NULL, the extra field information will be copied in extraField
            (extraFieldBufferSize is the size of the buffer).
            This is the Central-header version of the extra field
  if szComment!=NULL, the comment string of the file will be copied in szComment
            (commentBufferSize is the size of the buffer)
*/


/** Addition for GDAL : START */

extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64(unzFile file);

/** Addition for GDAL : END */


/***************************************************************************/
/* for reading the content of the current zipfile, you can open it, read data
   from it, and close it (you can close it before reading all the file)
   */

extern int ZEXPORT unzOpenCurrentFile(unzFile file);
/*
  Open for reading data the current file in the zipfile.
  If there is no error, the return value is UNZ_OK.
*/

extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file,
                                              const char* password);
/*
  Open for reading data the current file in the zipfile.
  password is a crypting password
  If there is no error, the return value is UNZ_OK.
*/

extern int ZEXPORT unzOpenCurrentFile2(unzFile file,
                                       int* method,
                                       int* level,
                                       int raw);
/*
  Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
    if raw==1
  *method will receive method of compression, *level will receive level of
     compression
  note : you can set level parameter as NULL (if you did not want known level,
         but you CANNOT set method parameter as NULL
*/

extern int ZEXPORT unzOpenCurrentFile3(unzFile file,
                                       int* method,
                                       int* level,
                                       int raw,
                                       const char* password);
/*
  Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
    if raw==1
  *method will receive method of compression, *level will receive level of
     compression
  note : you can set level parameter as NULL (if you did not want known level,
         but you CANNOT set method parameter as NULL
*/


extern int ZEXPORT unzCloseCurrentFile(unzFile file);
/*
  Close the file in zip opened with unzOpenCurrentFile
  Return UNZ_CRCERROR if all the file was read but the CRC is not good
*/

extern int ZEXPORT unzReadCurrentFile(unzFile file,
                                      voidp buf,
                                      unsigned len);
/*
  Read bytes from the current file (opened by unzOpenCurrentFile)
  buf contain buffer where data must be copied
  len the size of buf.

  return the number of byte copied if some bytes are copied
  return 0 if the end of file was reached
  return <0 with error code if there is an error
    (UNZ_ERRNO for IO error, or zLib error for uncompress error)
*/

extern z_off_t ZEXPORT unztell(unzFile file);

extern ZPOS64_T ZEXPORT unztell64(unzFile file);
/*
  Give the current position in uncompressed data
*/

extern int ZEXPORT unzeof(unzFile file);
/*
  return 1 if the end of file was reached, 0 elsewhere
*/

extern int ZEXPORT unzGetLocalExtrafield(unzFile file,
                                         voidp buf,
                                         unsigned len);
/*
  Read extra field from the current file (opened by unzOpenCurrentFile)
  This is the local-header version of the extra field (sometimes, there is
    more info in the local-header version than in the central-header)

  if buf==NULL, it return the size of the local extra field

  if buf!=NULL, len is the size of the buffer, the extra header is copied in
    buf.
  the return value is the number of bytes copied in buf, or (if <0)
    the error code
*/

/***************************************************************************/

/* Get the current file offset */
extern ZPOS64_T ZEXPORT unzGetOffset64 (unzFile file);
extern uLong ZEXPORT unzGetOffset (unzFile file);

/* Set the current file offset */
extern int ZEXPORT unzSetOffset64 (unzFile file, ZPOS64_T pos);
extern int ZEXPORT unzSetOffset (unzFile file, uLong pos);



#ifdef __cplusplus
}
#endif

#endif /* _unz64_H */
Added compat/zlib/contrib/minizip/zip.c.




































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* zip.c -- IO on .zip files using zlib
   Version 1.1, February 14h, 2010
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

         Changes
   Oct-2009 - Mathias Svensson - Remove old C style function prototypes
   Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives
   Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions.
   Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data
                                 It is used when recreating zip archive with RAW when deleting items from a zip.
                                 ZIP64 data is automatically added to items that needs it, and existing ZIP64 data need to be removed.
   Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required)
   Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer

*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <time.h>
#include "zlib.h"
#include "zip.h"

#ifdef STDC
#  include <stddef.h>
#endif
#ifdef NO_ERRNO_H
    extern int errno;
#else
#   include <errno.h>
#endif


#ifndef local
#  define local static
#endif
/* compile with -Dlocal if your debugger can't find static symbols */

#ifndef VERSIONMADEBY
# define VERSIONMADEBY   (0x0) /* platform dependent */
#endif

#ifndef Z_BUFSIZE
#define Z_BUFSIZE (64*1024) //(16384)
#endif

#ifndef Z_MAXFILENAMEINZIP
#define Z_MAXFILENAMEINZIP (256)
#endif

#ifndef ALLOC
# define ALLOC(size) (malloc(size))
#endif

/*
#define SIZECENTRALDIRITEM (0x2e)
#define SIZEZIPLOCALHEADER (0x1e)
*/

/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */


// NOT sure that this work on ALL platform
#define MAKEULONG64(a, b) ((ZPOS64_T)(((unsigned long)(a)) | ((ZPOS64_T)((unsigned long)(b))) << 32))

#ifndef SEEK_CUR
#define SEEK_CUR    1
#endif

#ifndef SEEK_END
#define SEEK_END    2
#endif

#ifndef SEEK_SET
#define SEEK_SET    0
#endif

#ifndef DEF_MEM_LEVEL
#if MAX_MEM_LEVEL >= 8
#  define DEF_MEM_LEVEL 8
#else
#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
#endif
#endif
const char zip_copyright[] =" zip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";


#define SIZEDATA_INDATABLOCK (4096-(4*4))

#define LOCALHEADERMAGIC    (0x04034b50)
#define CENTRALHEADERMAGIC  (0x02014b50)
#define ENDHEADERMAGIC      (0x06054b50)
#define ZIP64ENDHEADERMAGIC      (0x6064b50)
#define ZIP64ENDLOCHEADERMAGIC   (0x7064b50)

#define FLAG_LOCALHEADER_OFFSET (0x06)
#define CRC_LOCALHEADER_OFFSET  (0x0e)

#define SIZECENTRALHEADER (0x2e) /* 46 */

typedef struct linkedlist_datablock_internal_s
{
  struct linkedlist_datablock_internal_s* next_datablock;
  uLong  avail_in_this_block;
  uLong  filled_in_this_block;
  uLong  unused; /* for future use and alignment */
  unsigned char data[SIZEDATA_INDATABLOCK];
} linkedlist_datablock_internal;

typedef struct linkedlist_data_s
{
    linkedlist_datablock_internal* first_block;
    linkedlist_datablock_internal* last_block;
} linkedlist_data;


typedef struct
{
    z_stream stream;            /* zLib stream structure for inflate */
#ifdef HAVE_BZIP2
    bz_stream bstream;          /* bzLib stream structure for bziped */
#endif

    int  stream_initialised;    /* 1 is stream is initialised */
    uInt pos_in_buffered_data;  /* last written byte in buffered_data */

    ZPOS64_T pos_local_header;     /* offset of the local header of the file
                                     currently writing */
    char* central_header;       /* central header data for the current file */
    uLong size_centralExtra;
    uLong size_centralheader;   /* size of the central header for cur file */
    uLong size_centralExtraFree; /* Extra bytes allocated to the centralheader but that are not used */
    uLong flag;                 /* flag of the file currently writing */

    int  method;                /* compression method of file currently wr.*/
    int  raw;                   /* 1 for directly writing raw data */
    Byte buffered_data[Z_BUFSIZE];/* buffer contain compressed data to be writ*/
    uLong dosDate;
    uLong crc32;
    int  encrypt;
    int  zip64;               /* Add ZIP64 extended information in the extra field */
    ZPOS64_T pos_zip64extrainfo;
    ZPOS64_T totalCompressedData;
    ZPOS64_T totalUncompressedData;
#ifndef NOCRYPT
    unsigned long keys[3];     /* keys defining the pseudo-random sequence */
    const z_crc_t* pcrc_32_tab;
    unsigned crypt_header_size;
#endif
} curfile64_info;

typedef struct
{
    zlib_filefunc64_32_def z_filefunc;
    voidpf filestream;        /* io structure of the zipfile */
    linkedlist_data central_dir;/* datablock with central dir in construction*/
    int  in_opened_file_inzip;  /* 1 if a file in the zip is currently writ.*/
    curfile64_info ci;            /* info on the file currently writing */

    ZPOS64_T begin_pos;            /* position of the beginning of the zipfile */
    ZPOS64_T add_position_when_writing_offset;
    ZPOS64_T number_entry;

#ifndef NO_ADDFILEINEXISTINGZIP
    char *globalcomment;
#endif

} zip64_internal;


#ifndef NOCRYPT
#define INCLUDECRYPTINGCODE_IFCRYPTALLOWED
#include "crypt.h"
#endif

local linkedlist_datablock_internal* allocate_new_datablock(void) {
    linkedlist_datablock_internal* ldi;
    ldi = (linkedlist_datablock_internal*)
                 ALLOC(sizeof(linkedlist_datablock_internal));
    if (ldi!=NULL)
    {
        ldi->next_datablock = NULL ;
        ldi->filled_in_this_block = 0 ;
        ldi->avail_in_this_block = SIZEDATA_INDATABLOCK ;
    }
    return ldi;
}

local void free_datablock(linkedlist_datablock_internal* ldi) {
    while (ldi!=NULL)
    {
        linkedlist_datablock_internal* ldinext = ldi->next_datablock;
        free(ldi);
        ldi = ldinext;
    }
}

local void init_linkedlist(linkedlist_data* ll) {
    ll->first_block = ll->last_block = NULL;
}

local void free_linkedlist(linkedlist_data* ll) {
    free_datablock(ll->first_block);
    ll->first_block = ll->last_block = NULL;
}


local int add_data_in_datablock(linkedlist_data* ll, const void* buf, uLong len) {
    linkedlist_datablock_internal* ldi;
    const unsigned char* from_copy;

    if (ll==NULL)
        return ZIP_INTERNALERROR;

    if (ll->last_block == NULL)
    {
        ll->first_block = ll->last_block = allocate_new_datablock();
        if (ll->first_block == NULL)
            return ZIP_INTERNALERROR;
    }

    ldi = ll->last_block;
    from_copy = (const unsigned char*)buf;

    while (len>0)
    {
        uInt copy_this;
        uInt i;
        unsigned char* to_copy;

        if (ldi->avail_in_this_block==0)
        {
            ldi->next_datablock = allocate_new_datablock();
            if (ldi->next_datablock == NULL)
                return ZIP_INTERNALERROR;
            ldi = ldi->next_datablock ;
            ll->last_block = ldi;
        }

        if (ldi->avail_in_this_block < len)
            copy_this = (uInt)ldi->avail_in_this_block;
        else
            copy_this = (uInt)len;

        to_copy = &(ldi->data[ldi->filled_in_this_block]);

        for (i=0;i<copy_this;i++)
            *(to_copy+i)=*(from_copy+i);

        ldi->filled_in_this_block += copy_this;
        ldi->avail_in_this_block -= copy_this;
        from_copy += copy_this ;
        len -= copy_this;
    }
    return ZIP_OK;
}



/****************************************************************************/

#ifndef NO_ADDFILEINEXISTINGZIP
/* ===========================================================================
   Inputs a long in LSB order to the given file
   nbByte == 1, 2 ,4 or 8 (byte, short or long, ZPOS64_T)
*/

local int zip64local_putValue(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T x, int nbByte) {
    unsigned char buf[8];
    int n;
    for (n = 0; n < nbByte; n++)
    {
        buf[n] = (unsigned char)(x & 0xff);
        x >>= 8;
    }
    if (x != 0)
      {     /* data overflow - hack for ZIP64 (X Roche) */
      for (n = 0; n < nbByte; n++)
        {
          buf[n] = 0xff;
        }
      }

    if (ZWRITE64(*pzlib_filefunc_def,filestream,buf,(uLong)nbByte)!=(uLong)nbByte)
        return ZIP_ERRNO;
    else
        return ZIP_OK;
}

local void zip64local_putValue_inmemory (void* dest, ZPOS64_T x, int nbByte) {
    unsigned char* buf=(unsigned char*)dest;
    int n;
    for (n = 0; n < nbByte; n++) {
        buf[n] = (unsigned char)(x & 0xff);
        x >>= 8;
    }

    if (x != 0)
    {     /* data overflow - hack for ZIP64 */
       for (n = 0; n < nbByte; n++)
       {
          buf[n] = 0xff;
       }
    }
}

/****************************************************************************/


local uLong zip64local_TmzDateToDosDate(const tm_zip* ptm) {
    uLong year = (uLong)ptm->tm_year;
    if (year>=1980)
        year-=1980;
    else if (year>=80)
        year-=80;
    return
      (uLong) (((uLong)(ptm->tm_mday) + (32 * (uLong)(ptm->tm_mon+1)) + (512 * year)) << 16) |
        (((uLong)ptm->tm_sec/2) + (32 * (uLong)ptm->tm_min) + (2048 * (uLong)ptm->tm_hour));
}


/****************************************************************************/

local int zip64local_getByte(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, int* pi) {
    unsigned char c;
    int err = (int)ZREAD64(*pzlib_filefunc_def,filestream,&c,1);
    if (err==1)
    {
        *pi = (int)c;
        return ZIP_OK;
    }
    else
    {
        if (ZERROR64(*pzlib_filefunc_def,filestream))
            return ZIP_ERRNO;
        else
            return ZIP_EOF;
    }
}


/* ===========================================================================
   Reads a long in LSB order from the given gz_stream. Sets
*/
local int zip64local_getShort(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) {
    uLong x ;
    int i = 0;
    int err;

    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x = (uLong)i;

    if (err==ZIP_OK)
        err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((uLong)i)<<8;

    if (err==ZIP_OK)
        *pX = x;
    else
        *pX = 0;
    return err;
}

local int zip64local_getLong(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, uLong* pX) {
    uLong x ;
    int i = 0;
    int err;

    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x = (uLong)i;

    if (err==ZIP_OK)
        err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((uLong)i)<<8;

    if (err==ZIP_OK)
        err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((uLong)i)<<16;

    if (err==ZIP_OK)
        err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
    x += ((uLong)i)<<24;

    if (err==ZIP_OK)
        *pX = x;
    else
        *pX = 0;
    return err;
}


local int zip64local_getLong64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream, ZPOS64_T *pX) {
  ZPOS64_T x;
  int i = 0;
  int err;

  err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x = (ZPOS64_T)i;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<8;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<16;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<24;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<32;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<40;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<48;

  if (err==ZIP_OK)
    err = zip64local_getByte(pzlib_filefunc_def,filestream,&i);
  x += ((ZPOS64_T)i)<<56;

  if (err==ZIP_OK)
    *pX = x;
  else
    *pX = 0;

  return err;
}

#ifndef BUFREADCOMMENT
#define BUFREADCOMMENT (0x400)
#endif
/*
  Locate the Central directory of a zipfile (at the end, just before
    the global comment)
*/
local ZPOS64_T zip64local_SearchCentralDir(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) {
  unsigned char* buf;
  ZPOS64_T uSizeFile;
  ZPOS64_T uBackRead;
  ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
  ZPOS64_T uPosFound=0;

  if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
    return 0;


  uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);

  if (uMaxBack>uSizeFile)
    uMaxBack = uSizeFile;

  buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
  if (buf==NULL)
    return 0;

  uBackRead = 4;
  while (uBackRead<uMaxBack)
  {
    uLong uReadSize;
    ZPOS64_T uReadPos ;
    int i;
    if (uBackRead+BUFREADCOMMENT>uMaxBack)
      uBackRead = uMaxBack;
    else
      uBackRead+=BUFREADCOMMENT;
    uReadPos = uSizeFile-uBackRead ;

    uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
      (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
    if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
      break;

    if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
      break;

    for (i=(int)uReadSize-3; (i--)>0;)
      if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
        ((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
      {
        uPosFound = uReadPos+(unsigned)i;
        break;
      }

    if (uPosFound!=0)
      break;
  }
  free(buf);
  return uPosFound;
}

/*
Locate the End of Zip64 Central directory locator and from there find the CD of a zipfile (at the end, just before
the global comment)
*/
local ZPOS64_T zip64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def, voidpf filestream) {
  unsigned char* buf;
  ZPOS64_T uSizeFile;
  ZPOS64_T uBackRead;
  ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
  ZPOS64_T uPosFound=0;
  uLong uL;
  ZPOS64_T relativeOffset;

  if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
    return 0;

  uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);

  if (uMaxBack>uSizeFile)
    uMaxBack = uSizeFile;

  buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
  if (buf==NULL)
    return 0;

  uBackRead = 4;
  while (uBackRead<uMaxBack)
  {
    uLong uReadSize;
    ZPOS64_T uReadPos;
    int i;
    if (uBackRead+BUFREADCOMMENT>uMaxBack)
      uBackRead = uMaxBack;
    else
      uBackRead+=BUFREADCOMMENT;
    uReadPos = uSizeFile-uBackRead ;

    uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
      (BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
    if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
      break;

    if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
      break;

    for (i=(int)uReadSize-3; (i--)>0;)
    {
      // Signature "0x07064b50" Zip64 end of central directory locater
      if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) && ((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07))
      {
        uPosFound = uReadPos+(unsigned)i;
        break;
      }
    }

      if (uPosFound!=0)
        break;
  }

  free(buf);
  if (uPosFound == 0)
    return 0;

  /* Zip64 end of central directory locator */
  if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0)
    return 0;

  /* the signature, already checked */
  if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
    return 0;

  /* number of the disk with the start of the zip64 end of central directory */
  if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
    return 0;
  if (uL != 0)
    return 0;

  /* relative offset of the zip64 end of central directory record */
  if (zip64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=ZIP_OK)
    return 0;

  /* total number of disks */
  if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
    return 0;
  if (uL != 1)
    return 0;

  /* Goto Zip64 end of central directory record */
  if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0)
    return 0;

  /* the signature */
  if (zip64local_getLong(pzlib_filefunc_def,filestream,&uL)!=ZIP_OK)
    return 0;

  if (uL != 0x06064b50) // signature of 'Zip64 end of central directory'
    return 0;

  return relativeOffset;
}

local int LoadCentralDirectoryRecord(zip64_internal* pziinit) {
  int err=ZIP_OK;
  ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/

  ZPOS64_T size_central_dir;     /* size of the central directory  */
  ZPOS64_T offset_central_dir;   /* offset of start of central directory */
  ZPOS64_T central_pos;
  uLong uL;

  uLong number_disk;          /* number of the current disk, used for
                              spanning ZIP, unsupported, always 0*/
  uLong number_disk_with_CD;  /* number of the disk with central dir, used
                              for spanning ZIP, unsupported, always 0*/
  ZPOS64_T number_entry;
  ZPOS64_T number_entry_CD;      /* total number of entries in
                                the central dir
                                (same than number_entry on nospan) */
  uLong VersionMadeBy;
  uLong VersionNeeded;
  uLong size_comment;

  int hasZIP64Record = 0;

  // check first if we find a ZIP64 record
  central_pos = zip64local_SearchCentralDir64(&pziinit->z_filefunc,pziinit->filestream);
  if(central_pos > 0)
  {
    hasZIP64Record = 1;
  }
  else if(central_pos == 0)
  {
    central_pos = zip64local_SearchCentralDir(&pziinit->z_filefunc,pziinit->filestream);
  }

/* disable to allow appending to empty ZIP archive
        if (central_pos==0)
            err=ZIP_ERRNO;
*/

  if(hasZIP64Record)
  {
    ZPOS64_T sizeEndOfCentralDirectory;
    if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
      err=ZIP_ERRNO;

    /* the signature, already checked */
    if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* size of zip64 end of central directory record */
    if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &sizeEndOfCentralDirectory)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* version made by */
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionMadeBy)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* version needed to extract */
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &VersionNeeded)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* number of this disk */
    if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* number of the disk with the start of the central directory */
    if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* total number of entries in the central directory on this disk */
    if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream, &number_entry)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* total number of entries in the central directory */
    if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&number_entry_CD)!=ZIP_OK)
      err=ZIP_ERRNO;

    if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0))
      err=ZIP_BADZIPFILE;

    /* size of the central directory */
    if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&size_central_dir)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* offset of start of central directory with respect to the
    starting disk number */
    if (zip64local_getLong64(&pziinit->z_filefunc, pziinit->filestream,&offset_central_dir)!=ZIP_OK)
      err=ZIP_ERRNO;

    // TODO..
    // read the comment from the standard central header.
    size_comment = 0;
  }
  else
  {
    // Read End of central Directory info
    if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
      err=ZIP_ERRNO;

    /* the signature, already checked */
    if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream,&uL)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* number of this disk */
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* number of the disk with the start of the central directory */
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream,&number_disk_with_CD)!=ZIP_OK)
      err=ZIP_ERRNO;

    /* total number of entries in the central dir on this disk */
    number_entry = 0;
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
      err=ZIP_ERRNO;
    else
      number_entry = uL;

    /* total number of entries in the central dir */
    number_entry_CD = 0;
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
      err=ZIP_ERRNO;
    else
      number_entry_CD = uL;

    if ((number_entry_CD!=number_entry) || (number_disk_with_CD!=0) || (number_disk!=0))
      err=ZIP_BADZIPFILE;

    /* size of the central directory */
    size_central_dir = 0;
    if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
      err=ZIP_ERRNO;
    else
      size_central_dir = uL;

    /* offset of start of central directory with respect to the starting disk number */
    offset_central_dir = 0;
    if (zip64local_getLong(&pziinit->z_filefunc, pziinit->filestream, &uL)!=ZIP_OK)
      err=ZIP_ERRNO;
    else
      offset_central_dir = uL;


    /* zipfile global comment length */
    if (zip64local_getShort(&pziinit->z_filefunc, pziinit->filestream, &size_comment)!=ZIP_OK)
      err=ZIP_ERRNO;
  }

  if ((central_pos<offset_central_dir+size_central_dir) &&
    (err==ZIP_OK))
    err=ZIP_BADZIPFILE;

  if (err!=ZIP_OK)
  {
    ZCLOSE64(pziinit->z_filefunc, pziinit->filestream);
    return ZIP_ERRNO;
  }

  if (size_comment>0)
  {
    pziinit->globalcomment = (char*)ALLOC(size_comment+1);
    if (pziinit->globalcomment)
    {
      size_comment = ZREAD64(pziinit->z_filefunc, pziinit->filestream, pziinit->globalcomment,size_comment);
      pziinit->globalcomment[size_comment]=0;
    }
  }

  byte_before_the_zipfile = central_pos - (offset_central_dir+size_central_dir);
  pziinit->add_position_when_writing_offset = byte_before_the_zipfile;

  {
    ZPOS64_T size_central_dir_to_read = size_central_dir;
    size_t buf_size = SIZEDATA_INDATABLOCK;
    void* buf_read = (void*)ALLOC(buf_size);
    if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir + byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
      err=ZIP_ERRNO;

    while ((size_central_dir_to_read>0) && (err==ZIP_OK))
    {
      ZPOS64_T read_this = SIZEDATA_INDATABLOCK;
      if (read_this > size_central_dir_to_read)
        read_this = size_central_dir_to_read;

      if (ZREAD64(pziinit->z_filefunc, pziinit->filestream,buf_read,(uLong)read_this) != read_this)
        err=ZIP_ERRNO;

      if (err==ZIP_OK)
        err = add_data_in_datablock(&pziinit->central_dir,buf_read, (uLong)read_this);

      size_central_dir_to_read-=read_this;
    }
    free(buf_read);
  }
  pziinit->begin_pos = byte_before_the_zipfile;
  pziinit->number_entry = number_entry_CD;

  if (ZSEEK64(pziinit->z_filefunc, pziinit->filestream, offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET) != 0)
    err=ZIP_ERRNO;

  return err;
}


#endif /* !NO_ADDFILEINEXISTINGZIP*/


/************************************************************/
extern zipFile ZEXPORT zipOpen3(const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_32_def* pzlib_filefunc64_32_def) {
    zip64_internal ziinit;
    zip64_internal* zi;
    int err=ZIP_OK;

    ziinit.z_filefunc.zseek32_file = NULL;
    ziinit.z_filefunc.ztell32_file = NULL;
    if (pzlib_filefunc64_32_def==NULL)
        fill_fopen64_filefunc(&ziinit.z_filefunc.zfile_func64);
    else
        ziinit.z_filefunc = *pzlib_filefunc64_32_def;

    ziinit.filestream = ZOPEN64(ziinit.z_filefunc,
                  pathname,
                  (append == APPEND_STATUS_CREATE) ?
                  (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
                    (ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));

    if (ziinit.filestream == NULL)
        return NULL;

    if (append == APPEND_STATUS_CREATEAFTER)
        ZSEEK64(ziinit.z_filefunc,ziinit.filestream,0,SEEK_END);

    ziinit.begin_pos = ZTELL64(ziinit.z_filefunc,ziinit.filestream);
    ziinit.in_opened_file_inzip = 0;
    ziinit.ci.stream_initialised = 0;
    ziinit.number_entry = 0;
    ziinit.add_position_when_writing_offset = 0;
    init_linkedlist(&(ziinit.central_dir));



    zi = (zip64_internal*)ALLOC(sizeof(zip64_internal));
    if (zi==NULL)
    {
        ZCLOSE64(ziinit.z_filefunc,ziinit.filestream);
        return NULL;
    }

    /* now we add file in a zipfile */
#    ifndef NO_ADDFILEINEXISTINGZIP
    ziinit.globalcomment = NULL;
    if (append == APPEND_STATUS_ADDINZIP)
    {
      // Read and Cache Central Directory Records
      err = LoadCentralDirectoryRecord(&ziinit);
    }

    if (globalcomment)
    {
      *globalcomment = ziinit.globalcomment;
    }
#    endif /* !NO_ADDFILEINEXISTINGZIP*/

    if (err != ZIP_OK)
    {
#    ifndef NO_ADDFILEINEXISTINGZIP
        free(ziinit.globalcomment);
#    endif /* !NO_ADDFILEINEXISTINGZIP*/
        free(zi);
        return NULL;
    }
    else
    {
        *zi = ziinit;
        return (zipFile)zi;
    }
}

extern zipFile ZEXPORT zipOpen2(const char *pathname, int append, zipcharpc* globalcomment, zlib_filefunc_def* pzlib_filefunc32_def) {
    if (pzlib_filefunc32_def != NULL)
    {
        zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
        fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill,pzlib_filefunc32_def);
        return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill);
    }
    else
        return zipOpen3(pathname, append, globalcomment, NULL);
}

extern zipFile ZEXPORT zipOpen2_64(const void *pathname, int append, zipcharpc* globalcomment, zlib_filefunc64_def* pzlib_filefunc_def) {
    if (pzlib_filefunc_def != NULL)
    {
        zlib_filefunc64_32_def zlib_filefunc64_32_def_fill;
        zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
        zlib_filefunc64_32_def_fill.ztell32_file = NULL;
        zlib_filefunc64_32_def_fill.zseek32_file = NULL;
        return zipOpen3(pathname, append, globalcomment, &zlib_filefunc64_32_def_fill);
    }
    else
        return zipOpen3(pathname, append, globalcomment, NULL);
}



extern zipFile ZEXPORT zipOpen(const char* pathname, int append) {
    return zipOpen3((const void*)pathname,append,NULL,NULL);
}

extern zipFile ZEXPORT zipOpen64(const void* pathname, int append) {
    return zipOpen3(pathname,append,NULL,NULL);
}

local int Write_LocalFileHeader(zip64_internal* zi, const char* filename, uInt size_extrafield_local, const void* extrafield_local) {
  /* write the local header */
  int err;
  uInt size_filename = (uInt)strlen(filename);
  uInt size_extrafield = size_extrafield_local;

  err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC, 4);

  if (err==ZIP_OK)
  {
    if(zi->ci.zip64)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);/* version needed to extract */
    else
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
  }

  if (err==ZIP_OK)
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);

  if (err==ZIP_OK)
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);

  if (err==ZIP_OK)
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);

  // CRC / Compressed size / Uncompressed size will be filled in later and rewritten later
  if (err==ZIP_OK)
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
  if (err==ZIP_OK)
  {
    if(zi->ci.zip64)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* compressed size, unknown */
    else
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
  }
  if (err==ZIP_OK)
  {
    if(zi->ci.zip64)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xFFFFFFFF,4); /* uncompressed size, unknown */
    else
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
  }

  if (err==ZIP_OK)
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);

  if(zi->ci.zip64)
  {
    size_extrafield += 20;
  }

  if (err==ZIP_OK)
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield,2);

  if ((err==ZIP_OK) && (size_filename > 0))
  {
    if (ZWRITE64(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
      err = ZIP_ERRNO;
  }

  if ((err==ZIP_OK) && (size_extrafield_local > 0))
  {
    if (ZWRITE64(zi->z_filefunc, zi->filestream, extrafield_local, size_extrafield_local) != size_extrafield_local)
      err = ZIP_ERRNO;
  }


  if ((err==ZIP_OK) && (zi->ci.zip64))
  {
      // write the Zip64 extended info
      short HeaderID = 1;
      short DataSize = 16;
      ZPOS64_T CompressedSize = 0;
      ZPOS64_T UncompressedSize = 0;

      // Remember position of Zip64 extended info for the local file header. (needed when we update size after done with file)
      zi->ci.pos_zip64extrainfo = ZTELL64(zi->z_filefunc,zi->filestream);

      err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)HeaderID,2);
      err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)DataSize,2);

      err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)UncompressedSize,8);
      err = zip64local_putValue(&zi->z_filefunc, zi->filestream, (ZPOS64_T)CompressedSize,8);
  }

  return err;
}

/*
 NOTE.
 When writing RAW the ZIP64 extended information in extrafield_local and extrafield_global needs to be stripped
 before calling this function it can be done with zipRemoveExtraInfoBlock

 It is not done here because then we need to realloc a new buffer since parameters are 'const' and I want to minimize
 unnecessary allocations.
 */
extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                           const void* extrafield_local, uInt size_extrafield_local,
                                           const void* extrafield_global, uInt size_extrafield_global,
                                           const char* comment, int method, int level, int raw,
                                           int windowBits,int memLevel, int strategy,
                                           const char* password, uLong crcForCrypting,
                                           uLong versionMadeBy, uLong flagBase, int zip64) {
    zip64_internal* zi;
    uInt size_filename;
    uInt size_comment;
    uInt i;
    int err = ZIP_OK;

#    ifdef NOCRYPT
    (crcForCrypting);
    if (password != NULL)
        return ZIP_PARAMERROR;
#    endif

    if (file == NULL)
        return ZIP_PARAMERROR;

#ifdef HAVE_BZIP2
    if ((method!=0) && (method!=Z_DEFLATED) && (method!=Z_BZIP2ED))
      return ZIP_PARAMERROR;
#else
    if ((method!=0) && (method!=Z_DEFLATED))
      return ZIP_PARAMERROR;
#endif

    // The filename and comment length must fit in 16 bits.
    if ((filename!=NULL) && (strlen(filename)>0xffff))
        return ZIP_PARAMERROR;
    if ((comment!=NULL) && (strlen(comment)>0xffff))
        return ZIP_PARAMERROR;
    // The extra field length must fit in 16 bits. If the member also requires
    // a Zip64 extra block, that will also need to fit within that 16-bit
    // length, but that will be checked for later.
    if ((size_extrafield_local>0xffff) || (size_extrafield_global>0xffff))
        return ZIP_PARAMERROR;

    zi = (zip64_internal*)file;

    if (zi->in_opened_file_inzip == 1)
    {
        err = zipCloseFileInZip (file);
        if (err != ZIP_OK)
            return err;
    }

    if (filename==NULL)
        filename="-";

    if (comment==NULL)
        size_comment = 0;
    else
        size_comment = (uInt)strlen(comment);

    size_filename = (uInt)strlen(filename);

    if (zipfi == NULL)
        zi->ci.dosDate = 0;
    else
    {
        if (zipfi->dosDate != 0)
            zi->ci.dosDate = zipfi->dosDate;
        else
          zi->ci.dosDate = zip64local_TmzDateToDosDate(&zipfi->tmz_date);
    }

    zi->ci.flag = flagBase;
    if ((level==8) || (level==9))
      zi->ci.flag |= 2;
    if (level==2)
      zi->ci.flag |= 4;
    if (level==1)
      zi->ci.flag |= 6;
    if (password != NULL)
      zi->ci.flag |= 1;

    zi->ci.crc32 = 0;
    zi->ci.method = method;
    zi->ci.encrypt = 0;
    zi->ci.stream_initialised = 0;
    zi->ci.pos_in_buffered_data = 0;
    zi->ci.raw = raw;
    zi->ci.pos_local_header = ZTELL64(zi->z_filefunc,zi->filestream);

    zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename + size_extrafield_global + size_comment;
    zi->ci.size_centralExtraFree = 32; // Extra space we have reserved in case we need to add ZIP64 extra info data

    zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->ci.size_centralExtraFree);

    zi->ci.size_centralExtra = size_extrafield_global;
    zip64local_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
    /* version info */
    zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)versionMadeBy,2);
    zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
    zip64local_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
    zip64local_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
    zip64local_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
    zip64local_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
    zip64local_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
    zip64local_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
    zip64local_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
    zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
    zip64local_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
    zip64local_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/

    if (zipfi==NULL)
        zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
    else
        zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);

    if (zipfi==NULL)
        zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
    else
        zip64local_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);

    if(zi->ci.pos_local_header >= 0xffffffff)
      zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)0xffffffff,4);
    else
      zip64local_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header - zi->add_position_when_writing_offset,4);

    for (i=0;i<size_filename;i++)
        *(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);

    for (i=0;i<size_extrafield_global;i++)
        *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
              *(((const char*)extrafield_global)+i);

    for (i=0;i<size_comment;i++)
        *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
              size_extrafield_global+i) = *(comment+i);
    if (zi->ci.central_header == NULL)
        return ZIP_INTERNALERROR;

    zi->ci.zip64 = zip64;
    zi->ci.totalCompressedData = 0;
    zi->ci.totalUncompressedData = 0;
    zi->ci.pos_zip64extrainfo = 0;

    err = Write_LocalFileHeader(zi, filename, size_extrafield_local, extrafield_local);

#ifdef HAVE_BZIP2
    zi->ci.bstream.avail_in = (uInt)0;
    zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
    zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
    zi->ci.bstream.total_in_hi32 = 0;
    zi->ci.bstream.total_in_lo32 = 0;
    zi->ci.bstream.total_out_hi32 = 0;
    zi->ci.bstream.total_out_lo32 = 0;
#endif

    zi->ci.stream.avail_in = (uInt)0;
    zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
    zi->ci.stream.next_out = zi->ci.buffered_data;
    zi->ci.stream.total_in = 0;
    zi->ci.stream.total_out = 0;
    zi->ci.stream.data_type = Z_BINARY;

#ifdef HAVE_BZIP2
    if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED || zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
#else
    if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
#endif
    {
        if(zi->ci.method == Z_DEFLATED)
        {
          zi->ci.stream.zalloc = (alloc_func)0;
          zi->ci.stream.zfree = (free_func)0;
          zi->ci.stream.opaque = (voidpf)0;

          if (windowBits>0)
              windowBits = -windowBits;

          err = deflateInit2(&zi->ci.stream, level, Z_DEFLATED, windowBits, memLevel, strategy);

          if (err==Z_OK)
              zi->ci.stream_initialised = Z_DEFLATED;
        }
        else if(zi->ci.method == Z_BZIP2ED)
        {
#ifdef HAVE_BZIP2
            // Init BZip stuff here
          zi->ci.bstream.bzalloc = 0;
          zi->ci.bstream.bzfree = 0;
          zi->ci.bstream.opaque = (voidpf)0;

          err = BZ2_bzCompressInit(&zi->ci.bstream, level, 0,35);
          if(err == BZ_OK)
            zi->ci.stream_initialised = Z_BZIP2ED;
#endif
        }

    }

#    ifndef NOCRYPT
    zi->ci.crypt_header_size = 0;
    if ((err==Z_OK) && (password != NULL))
    {
        unsigned char bufHead[RAND_HEAD_LEN];
        unsigned int sizeHead;
        zi->ci.encrypt = 1;
        zi->ci.pcrc_32_tab = get_crc_table();
        /*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/

        sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
        zi->ci.crypt_header_size = sizeHead;

        if (ZWRITE64(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
                err = ZIP_ERRNO;
    }
#    endif

    if (err==Z_OK)
        zi->in_opened_file_inzip = 1;
    return err;
}

extern int ZEXPORT zipOpenNewFileInZip4(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                        const void* extrafield_local, uInt size_extrafield_local,
                                        const void* extrafield_global, uInt size_extrafield_global,
                                        const char* comment, int method, int level, int raw,
                                        int windowBits,int memLevel, int strategy,
                                        const char* password, uLong crcForCrypting,
                                        uLong versionMadeBy, uLong flagBase) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   windowBits, memLevel, strategy,
                                   password, crcForCrypting, versionMadeBy, flagBase, 0);
}

extern int ZEXPORT zipOpenNewFileInZip3(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                        const void* extrafield_local, uInt size_extrafield_local,
                                        const void* extrafield_global, uInt size_extrafield_global,
                                        const char* comment, int method, int level, int raw,
                                        int windowBits,int memLevel, int strategy,
                                        const char* password, uLong crcForCrypting) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   windowBits, memLevel, strategy,
                                   password, crcForCrypting, VERSIONMADEBY, 0, 0);
}

extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                         const void* extrafield_local, uInt size_extrafield_local,
                                         const void* extrafield_global, uInt size_extrafield_global,
                                         const char* comment, int method, int level, int raw,
                                         int windowBits,int memLevel, int strategy,
                                         const char* password, uLong crcForCrypting, int zip64) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   windowBits, memLevel, strategy,
                                   password, crcForCrypting, VERSIONMADEBY, 0, zip64);
}

extern int ZEXPORT zipOpenNewFileInZip2(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                        const void* extrafield_local, uInt size_extrafield_local,
                                        const void* extrafield_global, uInt size_extrafield_global,
                                        const char* comment, int method, int level, int raw) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, 0);
}

extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                           const void* extrafield_local, uInt size_extrafield_local,
                                           const void* extrafield_global, uInt size_extrafield_global,
                                           const char* comment, int method, int level, int raw, int zip64) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, raw,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, zip64);
}

extern int ZEXPORT zipOpenNewFileInZip64(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                         const void* extrafield_local, uInt size_extrafield_local,
                                         const void*extrafield_global, uInt size_extrafield_global,
                                         const char* comment, int method, int level, int zip64) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, 0,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, zip64);
}

extern int ZEXPORT zipOpenNewFileInZip(zipFile file, const char* filename, const zip_fileinfo* zipfi,
                                       const void* extrafield_local, uInt size_extrafield_local,
                                       const void*extrafield_global, uInt size_extrafield_global,
                                       const char* comment, int method, int level) {
    return zipOpenNewFileInZip4_64(file, filename, zipfi,
                                   extrafield_local, size_extrafield_local,
                                   extrafield_global, size_extrafield_global,
                                   comment, method, level, 0,
                                   -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
                                   NULL, 0, VERSIONMADEBY, 0, 0);
}

local int zip64FlushWriteBuffer(zip64_internal* zi) {
    int err=ZIP_OK;

    if (zi->ci.encrypt != 0)
    {
#ifndef NOCRYPT
        uInt i;
        int t;
        for (i=0;i<zi->ci.pos_in_buffered_data;i++)
            zi->ci.buffered_data[i] = zencode(zi->ci.keys, zi->ci.pcrc_32_tab, zi->ci.buffered_data[i],t);
#endif
    }

    if (ZWRITE64(zi->z_filefunc,zi->filestream,zi->ci.buffered_data,zi->ci.pos_in_buffered_data) != zi->ci.pos_in_buffered_data)
      err = ZIP_ERRNO;

    zi->ci.totalCompressedData += zi->ci.pos_in_buffered_data;

#ifdef HAVE_BZIP2
    if(zi->ci.method == Z_BZIP2ED)
    {
      zi->ci.totalUncompressedData += zi->ci.bstream.total_in_lo32;
      zi->ci.bstream.total_in_lo32 = 0;
      zi->ci.bstream.total_in_hi32 = 0;
    }
    else
#endif
    {
      zi->ci.totalUncompressedData += zi->ci.stream.total_in;
      zi->ci.stream.total_in = 0;
    }


    zi->ci.pos_in_buffered_data = 0;

    return err;
}

extern int ZEXPORT zipWriteInFileInZip(zipFile file, const void* buf, unsigned int len) {
    zip64_internal* zi;
    int err=ZIP_OK;

    if (file == NULL)
        return ZIP_PARAMERROR;
    zi = (zip64_internal*)file;

    if (zi->in_opened_file_inzip == 0)
        return ZIP_PARAMERROR;

    zi->ci.crc32 = crc32(zi->ci.crc32,buf,(uInt)len);

#ifdef HAVE_BZIP2
    if(zi->ci.method == Z_BZIP2ED && (!zi->ci.raw))
    {
      zi->ci.bstream.next_in = (void*)buf;
      zi->ci.bstream.avail_in = len;
      err = BZ_RUN_OK;

      while ((err==BZ_RUN_OK) && (zi->ci.bstream.avail_in>0))
      {
        if (zi->ci.bstream.avail_out == 0)
        {
          if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
            err = ZIP_ERRNO;
          zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
          zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
        }


        if(err != BZ_RUN_OK)
          break;

        if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
        {
          uLong uTotalOutBefore_lo = zi->ci.bstream.total_out_lo32;
//          uLong uTotalOutBefore_hi = zi->ci.bstream.total_out_hi32;
          err=BZ2_bzCompress(&zi->ci.bstream,  BZ_RUN);

          zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore_lo) ;
        }
      }

      if(err == BZ_RUN_OK)
        err = ZIP_OK;
    }
    else
#endif
    {
      zi->ci.stream.next_in = (Bytef*)(uintptr_t)buf;
      zi->ci.stream.avail_in = len;

      while ((err==ZIP_OK) && (zi->ci.stream.avail_in>0))
      {
          if (zi->ci.stream.avail_out == 0)
          {
              if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
                  err = ZIP_ERRNO;
              zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
              zi->ci.stream.next_out = zi->ci.buffered_data;
          }


          if(err != ZIP_OK)
              break;

          if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
          {
              uLong uTotalOutBefore = zi->ci.stream.total_out;
              err=deflate(&zi->ci.stream,  Z_NO_FLUSH);

              zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
          }
          else
          {
              uInt copy_this,i;
              if (zi->ci.stream.avail_in < zi->ci.stream.avail_out)
                  copy_this = zi->ci.stream.avail_in;
              else
                  copy_this = zi->ci.stream.avail_out;

              for (i = 0; i < copy_this; i++)
                  *(((char*)zi->ci.stream.next_out)+i) =
                      *(((const char*)zi->ci.stream.next_in)+i);
              {
                  zi->ci.stream.avail_in -= copy_this;
                  zi->ci.stream.avail_out-= copy_this;
                  zi->ci.stream.next_in+= copy_this;
                  zi->ci.stream.next_out+= copy_this;
                  zi->ci.stream.total_in+= copy_this;
                  zi->ci.stream.total_out+= copy_this;
                  zi->ci.pos_in_buffered_data += copy_this;
              }
          }
      }// while(...)
    }

    return err;
}

extern int ZEXPORT zipCloseFileInZipRaw(zipFile file, uLong uncompressed_size, uLong crc32) {
    return zipCloseFileInZipRaw64 (file, uncompressed_size, crc32);
}

extern int ZEXPORT zipCloseFileInZipRaw64(zipFile file, ZPOS64_T uncompressed_size, uLong crc32) {
    zip64_internal* zi;
    ZPOS64_T compressed_size;
    uLong invalidValue = 0xffffffff;
    unsigned datasize = 0;
    int err=ZIP_OK;

    if (file == NULL)
        return ZIP_PARAMERROR;
    zi = (zip64_internal*)file;

    if (zi->in_opened_file_inzip == 0)
        return ZIP_PARAMERROR;
    zi->ci.stream.avail_in = 0;

    if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
                {
                        while (err==ZIP_OK)
                        {
                                uLong uTotalOutBefore;
                                if (zi->ci.stream.avail_out == 0)
                                {
                                        if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
                                                err = ZIP_ERRNO;
                                        zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
                                        zi->ci.stream.next_out = zi->ci.buffered_data;
                                }
                                uTotalOutBefore = zi->ci.stream.total_out;
                                err=deflate(&zi->ci.stream,  Z_FINISH);
                                zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
                        }
                }
    else if ((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
    {
#ifdef HAVE_BZIP2
      err = BZ_FINISH_OK;
      while (err==BZ_FINISH_OK)
      {
        uLong uTotalOutBefore;
        if (zi->ci.bstream.avail_out == 0)
        {
          if (zip64FlushWriteBuffer(zi) == ZIP_ERRNO)
            err = ZIP_ERRNO;
          zi->ci.bstream.avail_out = (uInt)Z_BUFSIZE;
          zi->ci.bstream.next_out = (char*)zi->ci.buffered_data;
        }
        uTotalOutBefore = zi->ci.bstream.total_out_lo32;
        err=BZ2_bzCompress(&zi->ci.bstream,  BZ_FINISH);
        if(err == BZ_STREAM_END)
          err = Z_STREAM_END;

        zi->ci.pos_in_buffered_data += (uInt)(zi->ci.bstream.total_out_lo32 - uTotalOutBefore);
      }

      if(err == BZ_FINISH_OK)
        err = ZIP_OK;
#endif
    }

    if (err==Z_STREAM_END)
        err=ZIP_OK; /* this is normal */

    if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
                {
        if (zip64FlushWriteBuffer(zi)==ZIP_ERRNO)
            err = ZIP_ERRNO;
                }

    if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
    {
        int tmp_err = deflateEnd(&zi->ci.stream);
        if (err == ZIP_OK)
            err = tmp_err;
        zi->ci.stream_initialised = 0;
    }
#ifdef HAVE_BZIP2
    else if((zi->ci.method == Z_BZIP2ED) && (!zi->ci.raw))
    {
      int tmperr = BZ2_bzCompressEnd(&zi->ci.bstream);
                        if (err==ZIP_OK)
                                err = tmperr;
                        zi->ci.stream_initialised = 0;
    }
#endif

    if (!zi->ci.raw)
    {
        crc32 = (uLong)zi->ci.crc32;
        uncompressed_size = zi->ci.totalUncompressedData;
    }
    compressed_size = zi->ci.totalCompressedData;

#    ifndef NOCRYPT
    compressed_size += zi->ci.crypt_header_size;
#    endif

    // update Current Item crc and sizes,
    if(compressed_size >= 0xffffffff || uncompressed_size >= 0xffffffff || zi->ci.pos_local_header >= 0xffffffff)
    {
      /*version Made by*/
      zip64local_putValue_inmemory(zi->ci.central_header+4,(uLong)45,2);
      /*version needed*/
      zip64local_putValue_inmemory(zi->ci.central_header+6,(uLong)45,2);

    }

    zip64local_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/


    if(compressed_size >= 0xffffffff)
      zip64local_putValue_inmemory(zi->ci.central_header+20, invalidValue,4); /*compr size*/
    else
      zip64local_putValue_inmemory(zi->ci.central_header+20, compressed_size,4); /*compr size*/

    /// set internal file attributes field
    if (zi->ci.stream.data_type == Z_ASCII)
        zip64local_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);

    if(uncompressed_size >= 0xffffffff)
      zip64local_putValue_inmemory(zi->ci.central_header+24, invalidValue,4); /*uncompr size*/
    else
      zip64local_putValue_inmemory(zi->ci.central_header+24, uncompressed_size,4); /*uncompr size*/

    // Add ZIP64 extra info field for uncompressed size
    if(uncompressed_size >= 0xffffffff)
      datasize += 8;

    // Add ZIP64 extra info field for compressed size
    if(compressed_size >= 0xffffffff)
      datasize += 8;

    // Add ZIP64 extra info field for relative offset to local file header of current file
    if(zi->ci.pos_local_header >= 0xffffffff)
      datasize += 8;

    if(datasize > 0)
    {
      char* p = NULL;

      if((uLong)(datasize + 4) > zi->ci.size_centralExtraFree)
      {
        // we cannot write more data to the buffer that we have room for.
        return ZIP_BADZIPFILE;
      }

      p = zi->ci.central_header + zi->ci.size_centralheader;

      // Add Extra Information Header for 'ZIP64 information'
      zip64local_putValue_inmemory(p, 0x0001, 2); // HeaderID
      p += 2;
      zip64local_putValue_inmemory(p, datasize, 2); // DataSize
      p += 2;

      if(uncompressed_size >= 0xffffffff)
      {
        zip64local_putValue_inmemory(p, uncompressed_size, 8);
        p += 8;
      }

      if(compressed_size >= 0xffffffff)
      {
        zip64local_putValue_inmemory(p, compressed_size, 8);
        p += 8;
      }

      if(zi->ci.pos_local_header >= 0xffffffff)
      {
        zip64local_putValue_inmemory(p, zi->ci.pos_local_header, 8);
        p += 8;
      }

      // Update how much extra free space we got in the memory buffer
      // and increase the centralheader size so the new ZIP64 fields are included
      // ( 4 below is the size of HeaderID and DataSize field )
      zi->ci.size_centralExtraFree -= datasize + 4;
      zi->ci.size_centralheader += datasize + 4;

      // Update the extra info size field
      zi->ci.size_centralExtra += datasize + 4;
      zip64local_putValue_inmemory(zi->ci.central_header+30,(uLong)zi->ci.size_centralExtra,2);
    }

    if (err==ZIP_OK)
        err = add_data_in_datablock(&zi->central_dir, zi->ci.central_header, (uLong)zi->ci.size_centralheader);

    free(zi->ci.central_header);

    if (err==ZIP_OK)
    {
        // Update the LocalFileHeader with the new values.

        ZPOS64_T cur_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream);

        if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
            err = ZIP_ERRNO;

        if (err==ZIP_OK)
            err = zip64local_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */

        if(uncompressed_size >= 0xffffffff || compressed_size >= 0xffffffff )
        {
          if(zi->ci.pos_zip64extrainfo > 0)
          {
            // Update the size in the ZIP64 extended field.
            if (ZSEEK64(zi->z_filefunc,zi->filestream, zi->ci.pos_zip64extrainfo + 4,ZLIB_FILEFUNC_SEEK_SET)!=0)
              err = ZIP_ERRNO;

            if (err==ZIP_OK) /* compressed size, unknown */
              err = zip64local_putValue(&zi->z_filefunc, zi->filestream, uncompressed_size, 8);

            if (err==ZIP_OK) /* uncompressed size, unknown */
              err = zip64local_putValue(&zi->z_filefunc, zi->filestream, compressed_size, 8);
          }
          else
              err = ZIP_BADZIPFILE; // Caller passed zip64 = 0, so no room for zip64 info -> fatal
        }
        else
        {
          if (err==ZIP_OK) /* compressed size, unknown */
              err = zip64local_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);

          if (err==ZIP_OK) /* uncompressed size, unknown */
              err = zip64local_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
        }

        if (ZSEEK64(zi->z_filefunc,zi->filestream, cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
            err = ZIP_ERRNO;
    }

    zi->number_entry ++;
    zi->in_opened_file_inzip = 0;

    return err;
}

extern int ZEXPORT zipCloseFileInZip(zipFile file) {
    return zipCloseFileInZipRaw (file,0,0);
}

local int Write_Zip64EndOfCentralDirectoryLocator(zip64_internal* zi, ZPOS64_T zip64eocd_pos_inzip) {
  int err = ZIP_OK;
  ZPOS64_T pos = zip64eocd_pos_inzip - zi->add_position_when_writing_offset;

  err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDLOCHEADERMAGIC,4);

  /*num disks*/
    if (err==ZIP_OK) /* number of the disk with the start of the central directory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);

  /*relative offset*/
    if (err==ZIP_OK) /* Relative offset to the Zip64EndOfCentralDirectory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream, pos,8);

  /*total disks*/ /* Do not support spawning of disk so always say 1 here*/
    if (err==ZIP_OK) /* number of the disk with the start of the central directory */
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)1,4);

    return err;
}

local int Write_Zip64EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) {
  int err = ZIP_OK;

  uLong Zip64DataSize = 44;

  err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ZIP64ENDHEADERMAGIC,4);

  if (err==ZIP_OK) /* size of this 'zip64 end of central directory' */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)Zip64DataSize,8); // why ZPOS64_T of this ?

  if (err==ZIP_OK) /* version made by */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);

  if (err==ZIP_OK) /* version needed */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)45,2);

  if (err==ZIP_OK) /* number of this disk */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);

  if (err==ZIP_OK) /* number of the disk with the start of the central directory */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4);

  if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
    err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);

  if (err==ZIP_OK) /* total number of entries in the central dir */
    err = zip64local_putValue(&zi->z_filefunc, zi->filestream, zi->number_entry, 8);

  if (err==ZIP_OK) /* size of the central directory */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(ZPOS64_T)size_centraldir,8);

  if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */
  {
    ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (ZPOS64_T)pos,8);
  }
  return err;
}

local int Write_EndOfCentralDirectoryRecord(zip64_internal* zi, uLong size_centraldir, ZPOS64_T centraldir_pos_inzip) {
  int err = ZIP_OK;

  /*signature*/
  err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);

  if (err==ZIP_OK) /* number of this disk */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);

  if (err==ZIP_OK) /* number of the disk with the start of the central directory */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);

  if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
  {
    {
      if(zi->number_entry >= 0xFFFF)
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record
      else
        err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
    }
  }

  if (err==ZIP_OK) /* total number of entries in the central dir */
  {
    if(zi->number_entry >= 0xFFFF)
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)0xffff,2); // use value in ZIP64 record
    else
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
  }

  if (err==ZIP_OK) /* size of the central directory */
    err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);

  if (err==ZIP_OK) /* offset of start of central directory with respect to the starting disk number */
  {
    ZPOS64_T pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
    if(pos >= 0xffffffff)
    {
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)0xffffffff,4);
    }
    else
      err = zip64local_putValue(&zi->z_filefunc,zi->filestream, (uLong)(centraldir_pos_inzip - zi->add_position_when_writing_offset),4);
  }

   return err;
}

local int Write_GlobalComment(zip64_internal* zi, const char* global_comment) {
  int err = ZIP_OK;
  uInt size_global_comment = 0;

  if(global_comment != NULL)
    size_global_comment = (uInt)strlen(global_comment);

  err = zip64local_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);

  if (err == ZIP_OK && size_global_comment > 0)
  {
    if (ZWRITE64(zi->z_filefunc,zi->filestream, global_comment, size_global_comment) != size_global_comment)
      err = ZIP_ERRNO;
  }
  return err;
}

extern int ZEXPORT zipClose(zipFile file, const char* global_comment) {
    zip64_internal* zi;
    int err = 0;
    uLong size_centraldir = 0;
    ZPOS64_T centraldir_pos_inzip;
    ZPOS64_T pos;

    if (file == NULL)
        return ZIP_PARAMERROR;

    zi = (zip64_internal*)file;

    if (zi->in_opened_file_inzip == 1)
    {
        err = zipCloseFileInZip (file);
    }

#ifndef NO_ADDFILEINEXISTINGZIP
    if (global_comment==NULL)
        global_comment = zi->globalcomment;
#endif

    centraldir_pos_inzip = ZTELL64(zi->z_filefunc,zi->filestream);

    if (err==ZIP_OK)
    {
        linkedlist_datablock_internal* ldi = zi->central_dir.first_block;
        while (ldi!=NULL)
        {
            if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
            {
                if (ZWRITE64(zi->z_filefunc,zi->filestream, ldi->data, ldi->filled_in_this_block) != ldi->filled_in_this_block)
                    err = ZIP_ERRNO;
            }

            size_centraldir += ldi->filled_in_this_block;
            ldi = ldi->next_datablock;
        }
    }
    free_linkedlist(&(zi->central_dir));

    pos = centraldir_pos_inzip - zi->add_position_when_writing_offset;
    if(pos >= 0xffffffff || zi->number_entry >= 0xFFFF)
    {
      ZPOS64_T Zip64EOCDpos = ZTELL64(zi->z_filefunc,zi->filestream);
      Write_Zip64EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip);

      Write_Zip64EndOfCentralDirectoryLocator(zi, Zip64EOCDpos);
    }

    if (err==ZIP_OK)
      err = Write_EndOfCentralDirectoryRecord(zi, size_centraldir, centraldir_pos_inzip);

    if(err == ZIP_OK)
      err = Write_GlobalComment(zi, global_comment);

    if (ZCLOSE64(zi->z_filefunc,zi->filestream) != 0)
        if (err == ZIP_OK)
            err = ZIP_ERRNO;

#ifndef NO_ADDFILEINEXISTINGZIP
    free(zi->globalcomment);
#endif
    free(zi);

    return err;
}

extern int ZEXPORT zipRemoveExtraInfoBlock(char* pData, int* dataLen, short sHeader) {
  char* p = pData;
  int size = 0;
  char* pNewHeader;
  char* pTmp;
  short header;
  short dataSize;

  int retVal = ZIP_OK;

  if(pData == NULL || dataLen == NULL || *dataLen < 4)
    return ZIP_PARAMERROR;

  pNewHeader = (char*)ALLOC((unsigned)*dataLen);
  pTmp = pNewHeader;

  while(p < (pData + *dataLen))
  {
    header = *(short*)p;
    dataSize = *(((short*)p)+1);

    if( header == sHeader ) // Header found.
    {
      p += dataSize + 4; // skip it. do not copy to temp buffer
    }
    else
    {
      // Extra Info block should not be removed, So copy it to the temp buffer.
      memcpy(pTmp, p, dataSize + 4);
      p += dataSize + 4;
      size += dataSize + 4;
    }

  }

  if(size < *dataLen)
  {
    // clean old extra info block.
    memset(pData,0, *dataLen);

    // copy the new extra info block over the old
    if(size > 0)
      memcpy(pData, pNewHeader, size);

    // set the new extra info size
    *dataLen = size;

    retVal = ZIP_OK;
  }
  else
    retVal = ZIP_ERRNO;

  free(pNewHeader);

  return retVal;
}
Added compat/zlib/contrib/minizip/zip.h.












































































































































































































































































































































































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/* zip.h -- IO on .zip files using zlib
   Version 1.1, February 14h, 2010
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

         ---------------------------------------------------------------------------

   Condition of use and distribution are the same than zlib :

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

        ---------------------------------------------------------------------------

        Changes

        See header of zip.h

*/

#ifndef _zip12_H
#define _zip12_H

#ifdef __cplusplus
extern "C" {
#endif

//#define HAVE_BZIP2

#ifndef _ZLIB_H
#include "zlib.h"
#endif

#ifndef _ZLIBIOAPI_H
#include "ioapi.h"
#endif

#ifdef HAVE_BZIP2
#include "bzlib.h"
#endif

#define Z_BZIP2ED 12

#if defined(STRICTZIP) || defined(STRICTZIPUNZIP)
/* like the STRICT of WIN32, we define a pointer that cannot be converted
    from (void*) without cast */
typedef struct TagzipFile__ { int unused; } zipFile__;
typedef zipFile__ *zipFile;
#else
typedef voidp zipFile;
#endif

#define ZIP_OK                          (0)
#define ZIP_EOF                         (0)
#define ZIP_ERRNO                       (Z_ERRNO)
#define ZIP_PARAMERROR                  (-102)
#define ZIP_BADZIPFILE                  (-103)
#define ZIP_INTERNALERROR               (-104)

#ifndef DEF_MEM_LEVEL
#  if MAX_MEM_LEVEL >= 8
#    define DEF_MEM_LEVEL 8
#  else
#    define DEF_MEM_LEVEL  MAX_MEM_LEVEL
#  endif
#endif
/* default memLevel */

/* tm_zip contain date/time info */
typedef struct tm_zip_s
{
    int tm_sec;             /* seconds after the minute - [0,59] */
    int tm_min;             /* minutes after the hour - [0,59] */
    int tm_hour;            /* hours since midnight - [0,23] */
    int tm_mday;            /* day of the month - [1,31] */
    int tm_mon;             /* months since January - [0,11] */
    int tm_year;            /* years - [1980..2044] */
} tm_zip;

typedef struct
{
    tm_zip      tmz_date;       /* date in understandable format           */
    uLong       dosDate;       /* if dos_date == 0, tmu_date is used      */
/*    uLong       flag;        */   /* general purpose bit flag        2 bytes */

    uLong       internal_fa;    /* internal file attributes        2 bytes */
    uLong       external_fa;    /* external file attributes        4 bytes */
} zip_fileinfo;

typedef const char* zipcharpc;


#define APPEND_STATUS_CREATE        (0)
#define APPEND_STATUS_CREATEAFTER   (1)
#define APPEND_STATUS_ADDINZIP      (2)

extern zipFile ZEXPORT zipOpen(const char *pathname, int append);
extern zipFile ZEXPORT zipOpen64(const void *pathname, int append);
/*
  Create a zipfile.
     pathname contain on Windows XP a filename like "c:\\zlib\\zlib113.zip" or on
       an Unix computer "zlib/zlib113.zip".
     if the file pathname exist and append==APPEND_STATUS_CREATEAFTER, the zip
       will be created at the end of the file.
         (useful if the file contain a self extractor code)
     if the file pathname exist and append==APPEND_STATUS_ADDINZIP, we will
       add files in existing zip (be sure you don't add file that doesn't exist)
     If the zipfile cannot be opened, the return value is NULL.
     Else, the return value is a zipFile Handle, usable with other function
       of this zip package.
*/

/* Note : there is no delete function into a zipfile.
   If you want delete file into a zipfile, you must open a zipfile, and create another
   Of course, you can use RAW reading and writing to copy the file you did not want delete
*/

extern zipFile ZEXPORT zipOpen2(const char *pathname,
                                int append,
                                zipcharpc* globalcomment,
                                zlib_filefunc_def* pzlib_filefunc_def);

extern zipFile ZEXPORT zipOpen2_64(const void *pathname,
                                   int append,
                                   zipcharpc* globalcomment,
                                   zlib_filefunc64_def* pzlib_filefunc_def);

extern zipFile ZEXPORT zipOpen3(const void *pathname,
                                int append,
                                zipcharpc* globalcomment,
                                zlib_filefunc64_32_def* pzlib_filefunc64_32_def);

extern int ZEXPORT zipOpenNewFileInZip(zipFile file,
                                       const char* filename,
                                       const zip_fileinfo* zipfi,
                                       const void* extrafield_local,
                                       uInt size_extrafield_local,
                                       const void* extrafield_global,
                                       uInt size_extrafield_global,
                                       const char* comment,
                                       int method,
                                       int level);

extern int ZEXPORT zipOpenNewFileInZip64(zipFile file,
                                         const char* filename,
                                         const zip_fileinfo* zipfi,
                                         const void* extrafield_local,
                                         uInt size_extrafield_local,
                                         const void* extrafield_global,
                                         uInt size_extrafield_global,
                                         const char* comment,
                                         int method,
                                         int level,
                                         int zip64);

/*
  Open a file in the ZIP for writing.
  filename : the filename in zip (if NULL, '-' without quote will be used
  *zipfi contain supplemental information
  if extrafield_local!=NULL and size_extrafield_local>0, extrafield_local
    contains the extrafield data for the local header
  if extrafield_global!=NULL and size_extrafield_global>0, extrafield_global
    contains the extrafield data for the global header
  if comment != NULL, comment contain the comment string
  method contain the compression method (0 for store, Z_DEFLATED for deflate)
  level contain the level of compression (can be Z_DEFAULT_COMPRESSION)
  zip64 is set to 1 if a zip64 extended information block should be added to the local file header.
                    this MUST be '1' if the uncompressed size is >= 0xffffffff.

*/


extern int ZEXPORT zipOpenNewFileInZip2(zipFile file,
                                        const char* filename,
                                        const zip_fileinfo* zipfi,
                                        const void* extrafield_local,
                                        uInt size_extrafield_local,
                                        const void* extrafield_global,
                                        uInt size_extrafield_global,
                                        const char* comment,
                                        int method,
                                        int level,
                                        int raw);


extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file,
                                           const char* filename,
                                           const zip_fileinfo* zipfi,
                                           const void* extrafield_local,
                                           uInt size_extrafield_local,
                                           const void* extrafield_global,
                                           uInt size_extrafield_global,
                                           const char* comment,
                                           int method,
                                           int level,
                                           int raw,
                                           int zip64);
/*
  Same than zipOpenNewFileInZip, except if raw=1, we write raw file
 */

extern int ZEXPORT zipOpenNewFileInZip3(zipFile file,
                                        const char* filename,
                                        const zip_fileinfo* zipfi,
                                        const void* extrafield_local,
                                        uInt size_extrafield_local,
                                        const void* extrafield_global,
                                        uInt size_extrafield_global,
                                        const char* comment,
                                        int method,
                                        int level,
                                        int raw,
                                        int windowBits,
                                        int memLevel,
                                        int strategy,
                                        const char* password,
                                        uLong crcForCrypting);

extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file,
                                           const char* filename,
                                           const zip_fileinfo* zipfi,
                                           const void* extrafield_local,
                                           uInt size_extrafield_local,
                                           const void* extrafield_global,
                                           uInt size_extrafield_global,
                                           const char* comment,
                                           int method,
                                           int level,
                                           int raw,
                                           int windowBits,
                                           int memLevel,
                                           int strategy,
                                           const char* password,
                                           uLong crcForCrypting,
                                           int zip64);

/*
  Same than zipOpenNewFileInZip2, except
    windowBits,memLevel,,strategy : see parameter strategy in deflateInit2
    password : crypting password (NULL for no crypting)
    crcForCrypting : crc of file to compress (needed for crypting)
 */

extern int ZEXPORT zipOpenNewFileInZip4(zipFile file,
                                        const char* filename,
                                        const zip_fileinfo* zipfi,
                                        const void* extrafield_local,
                                        uInt size_extrafield_local,
                                        const void* extrafield_global,
                                        uInt size_extrafield_global,
                                        const char* comment,
                                        int method,
                                        int level,
                                        int raw,
                                        int windowBits,
                                        int memLevel,
                                        int strategy,
                                        const char* password,
                                        uLong crcForCrypting,
                                        uLong versionMadeBy,
                                        uLong flagBase);


extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file,
                                           const char* filename,
                                           const zip_fileinfo* zipfi,
                                           const void* extrafield_local,
                                           uInt size_extrafield_local,
                                           const void* extrafield_global,
                                           uInt size_extrafield_global,
                                           const char* comment,
                                           int method,
                                           int level,
                                           int raw,
                                           int windowBits,
                                           int memLevel,
                                           int strategy,
                                           const char* password,
                                           uLong crcForCrypting,
                                           uLong versionMadeBy,
                                           uLong flagBase,
                                           int zip64);
/*
  Same than zipOpenNewFileInZip4, except
    versionMadeBy : value for Version made by field
    flag : value for flag field (compression level info will be added)
 */


extern int ZEXPORT zipWriteInFileInZip(zipFile file,
                                       const void* buf,
                                       unsigned len);
/*
  Write data in the zipfile
*/

extern int ZEXPORT zipCloseFileInZip(zipFile file);
/*
  Close the current file in the zipfile
*/

extern int ZEXPORT zipCloseFileInZipRaw(zipFile file,
                                        uLong uncompressed_size,
                                        uLong crc32);

extern int ZEXPORT zipCloseFileInZipRaw64(zipFile file,
                                          ZPOS64_T uncompressed_size,
                                          uLong crc32);

/*
  Close the current file in the zipfile, for file opened with
    parameter raw=1 in zipOpenNewFileInZip2
  uncompressed_size and crc32 are value for the uncompressed size
*/

extern int ZEXPORT zipClose(zipFile file,
                            const char* global_comment);
/*
  Close the zipfile
*/


extern int ZEXPORT zipRemoveExtraInfoBlock(char* pData, int* dataLen, short sHeader);
/*
  zipRemoveExtraInfoBlock -  Added by Mathias Svensson

  Remove extra information block from a extra information data for the local file header or central directory header

  It is needed to remove ZIP64 extra information blocks when before data is written if using RAW mode.

  0x0001 is the signature header for the ZIP64 extra information blocks

  usage.
                        Remove ZIP64 Extra information from a central director extra field data
              zipRemoveExtraInfoBlock(pCenDirExtraFieldData, &nCenDirExtraFieldDataLen, 0x0001);

                        Remove ZIP64 Extra information from a Local File Header extra field data
        zipRemoveExtraInfoBlock(pLocalHeaderExtraFieldData, &nLocalHeaderExtraFieldDataLen, 0x0001);
*/

#ifdef __cplusplus
}
#endif

#endif /* _zip64_H */
Added compat/zlib/contrib/pascal/example.pas.























































































































































































































































































































































































































































































































































































































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(* example.c -- usage example of the zlib compression library
 * Copyright (C) 1995-2003 Jean-loup Gailly.
 * For conditions of distribution and use, see copyright notice in zlib.h
 *
 * Pascal translation
 * Copyright (C) 1998 by Jacques Nomssi Nzali.
 * For conditions of distribution and use, see copyright notice in readme.txt
 *
 * Adaptation to the zlibpas interface
 * Copyright (C) 2003 by Cosmin Truta.
 * For conditions of distribution and use, see copyright notice in readme.txt
 *)

program example;

{$DEFINE TEST_COMPRESS}
{DO NOT $DEFINE TEST_GZIO}
{$DEFINE TEST_DEFLATE}
{$DEFINE TEST_INFLATE}
{$DEFINE TEST_FLUSH}
{$DEFINE TEST_SYNC}
{$DEFINE TEST_DICT}

uses SysUtils, zlibpas;

const TESTFILE = 'foo.gz';

(* "hello world" would be more standard, but the repeated "hello"
 * stresses the compression code better, sorry...
 *)
const hello: PChar = 'hello, hello!';

const dictionary: PChar = 'hello';

var dictId: LongInt; (* Adler32 value of the dictionary *)

procedure CHECK_ERR(err: Integer; msg: String);
begin
  if err <> Z_OK then
  begin
    WriteLn(msg, ' error: ', err);
    Halt(1);
  end;
end;

procedure EXIT_ERR(const msg: String);
begin
  WriteLn('Error: ', msg);
  Halt(1);
end;

(* ===========================================================================
 * Test compress and uncompress
 *)
{$IFDEF TEST_COMPRESS}
procedure test_compress(compr: Pointer; comprLen: LongInt;
                        uncompr: Pointer; uncomprLen: LongInt);
var err: Integer;
    len: LongInt;
begin
  len := StrLen(hello)+1;

  err := compress(compr, comprLen, hello, len);
  CHECK_ERR(err, 'compress');

  StrCopy(PChar(uncompr), 'garbage');

  err := uncompress(uncompr, uncomprLen, compr, comprLen);
  CHECK_ERR(err, 'uncompress');

  if StrComp(PChar(uncompr), hello) <> 0 then
    EXIT_ERR('bad uncompress')
  else
    WriteLn('uncompress(): ', PChar(uncompr));
end;
{$ENDIF}

(* ===========================================================================
 * Test read/write of .gz files
 *)
{$IFDEF TEST_GZIO}
procedure test_gzio(const fname: PChar; (* compressed file name *)
                    uncompr: Pointer;
                    uncomprLen: LongInt);
var err: Integer;
    len: Integer;
    zfile: gzFile;
    pos: LongInt;
begin
  len := StrLen(hello)+1;

  zfile := gzopen(fname, 'wb');
  if zfile = NIL then
  begin
    WriteLn('gzopen error');
    Halt(1);
  end;
  gzputc(zfile, 'h');
  if gzputs(zfile, 'ello') <> 4 then
  begin
    WriteLn('gzputs err: ', gzerror(zfile, err));
    Halt(1);
  end;
  {$IFDEF GZ_FORMAT_STRING}
  if gzprintf(zfile, ', %s!', 'hello') <> 8 then
  begin
    WriteLn('gzprintf err: ', gzerror(zfile, err));
    Halt(1);
  end;
  {$ELSE}
  if gzputs(zfile, ', hello!') <> 8 then
  begin
    WriteLn('gzputs err: ', gzerror(zfile, err));
    Halt(1);
  end;
  {$ENDIF}
  gzseek(zfile, 1, SEEK_CUR); (* add one zero byte *)
  gzclose(zfile);

  zfile := gzopen(fname, 'rb');
  if zfile = NIL then
  begin
    WriteLn('gzopen error');
    Halt(1);
  end;

  StrCopy(PChar(uncompr), 'garbage');

  if gzread(zfile, uncompr, uncomprLen) <> len then
  begin
    WriteLn('gzread err: ', gzerror(zfile, err));
    Halt(1);
  end;
  if StrComp(PChar(uncompr), hello) <> 0 then
  begin
    WriteLn('bad gzread: ', PChar(uncompr));
    Halt(1);
  end
  else
    WriteLn('gzread(): ', PChar(uncompr));

  pos := gzseek(zfile, -8, SEEK_CUR);
  if (pos <> 6) or (gztell(zfile) <> pos) then
  begin
    WriteLn('gzseek error, pos=', pos, ', gztell=', gztell(zfile));
    Halt(1);
  end;

  if gzgetc(zfile) <> ' ' then
  begin
    WriteLn('gzgetc error');
    Halt(1);
  end;

  if gzungetc(' ', zfile) <> ' ' then
  begin
    WriteLn('gzungetc error');
    Halt(1);
  end;

  gzgets(zfile, PChar(uncompr), uncomprLen);
  uncomprLen := StrLen(PChar(uncompr));
  if uncomprLen <> 7 then (* " hello!" *)
  begin
    WriteLn('gzgets err after gzseek: ', gzerror(zfile, err));
    Halt(1);
  end;
  if StrComp(PChar(uncompr), hello + 6) <> 0 then
  begin
    WriteLn('bad gzgets after gzseek');
    Halt(1);
  end
  else
    WriteLn('gzgets() after gzseek: ', PChar(uncompr));

  gzclose(zfile);
end;
{$ENDIF}

(* ===========================================================================
 * Test deflate with small buffers
 *)
{$IFDEF TEST_DEFLATE}
procedure test_deflate(compr: Pointer; comprLen: LongInt);
var c_stream: z_stream; (* compression stream *)
    err: Integer;
    len: LongInt;
begin
  len := StrLen(hello)+1;

  c_stream.zalloc := NIL;
  c_stream.zfree := NIL;
  c_stream.opaque := NIL;

  err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
  CHECK_ERR(err, 'deflateInit');

  c_stream.next_in := hello;
  c_stream.next_out := compr;

  while (c_stream.total_in <> len) and
        (c_stream.total_out < comprLen) do
  begin
    c_stream.avail_out := 1; { force small buffers }
    c_stream.avail_in := 1;
    err := deflate(c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, 'deflate');
  end;

  (* Finish the stream, still forcing small buffers: *)
  while TRUE do
  begin
    c_stream.avail_out := 1;
    err := deflate(c_stream, Z_FINISH);
    if err = Z_STREAM_END then
      break;
    CHECK_ERR(err, 'deflate');
  end;

  err := deflateEnd(c_stream);
  CHECK_ERR(err, 'deflateEnd');
end;
{$ENDIF}

(* ===========================================================================
 * Test inflate with small buffers
 *)
{$IFDEF TEST_INFLATE}
procedure test_inflate(compr: Pointer; comprLen : LongInt;
                       uncompr: Pointer; uncomprLen : LongInt);
var err: Integer;
    d_stream: z_stream; (* decompression stream *)
begin
  StrCopy(PChar(uncompr), 'garbage');

  d_stream.zalloc := NIL;
  d_stream.zfree := NIL;
  d_stream.opaque := NIL;

  d_stream.next_in := compr;
  d_stream.avail_in := 0;
  d_stream.next_out := uncompr;

  err := inflateInit(d_stream);
  CHECK_ERR(err, 'inflateInit');

  while (d_stream.total_out < uncomprLen) and
        (d_stream.total_in < comprLen) do
  begin
    d_stream.avail_out := 1; (* force small buffers *)
    d_stream.avail_in := 1;
    err := inflate(d_stream, Z_NO_FLUSH);
    if err = Z_STREAM_END then
      break;
    CHECK_ERR(err, 'inflate');
  end;

  err := inflateEnd(d_stream);
  CHECK_ERR(err, 'inflateEnd');

  if StrComp(PChar(uncompr), hello) <> 0 then
    EXIT_ERR('bad inflate')
  else
    WriteLn('inflate(): ', PChar(uncompr));
end;
{$ENDIF}

(* ===========================================================================
 * Test deflate with large buffers and dynamic change of compression level
 *)
{$IFDEF TEST_DEFLATE}
procedure test_large_deflate(compr: Pointer; comprLen: LongInt;
                             uncompr: Pointer; uncomprLen: LongInt);
var c_stream: z_stream; (* compression stream *)
    err: Integer;
begin
  c_stream.zalloc := NIL;
  c_stream.zfree := NIL;
  c_stream.opaque := NIL;

  err := deflateInit(c_stream, Z_BEST_SPEED);
  CHECK_ERR(err, 'deflateInit');

  c_stream.next_out := compr;
  c_stream.avail_out := Integer(comprLen);

  (* At this point, uncompr is still mostly zeroes, so it should compress
   * very well:
   *)
  c_stream.next_in := uncompr;
  c_stream.avail_in := Integer(uncomprLen);
  err := deflate(c_stream, Z_NO_FLUSH);
  CHECK_ERR(err, 'deflate');
  if c_stream.avail_in <> 0 then
    EXIT_ERR('deflate not greedy');

  (* Feed in already compressed data and switch to no compression: *)
  deflateParams(c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
  c_stream.next_in := compr;
  c_stream.avail_in := Integer(comprLen div 2);
  err := deflate(c_stream, Z_NO_FLUSH);
  CHECK_ERR(err, 'deflate');

  (* Switch back to compressing mode: *)
  deflateParams(c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
  c_stream.next_in := uncompr;
  c_stream.avail_in := Integer(uncomprLen);
  err := deflate(c_stream, Z_NO_FLUSH);
  CHECK_ERR(err, 'deflate');

  err := deflate(c_stream, Z_FINISH);
  if err <> Z_STREAM_END then
    EXIT_ERR('deflate should report Z_STREAM_END');

  err := deflateEnd(c_stream);
  CHECK_ERR(err, 'deflateEnd');
end;
{$ENDIF}

(* ===========================================================================
 * Test inflate with large buffers
 *)
{$IFDEF TEST_INFLATE}
procedure test_large_inflate(compr: Pointer; comprLen: LongInt;
                             uncompr: Pointer; uncomprLen: LongInt);
var err: Integer;
    d_stream: z_stream; (* decompression stream *)
begin
  StrCopy(PChar(uncompr), 'garbage');

  d_stream.zalloc := NIL;
  d_stream.zfree := NIL;
  d_stream.opaque := NIL;

  d_stream.next_in := compr;
  d_stream.avail_in := Integer(comprLen);

  err := inflateInit(d_stream);
  CHECK_ERR(err, 'inflateInit');

  while TRUE do
  begin
    d_stream.next_out := uncompr;            (* discard the output *)
    d_stream.avail_out := Integer(uncomprLen);
    err := inflate(d_stream, Z_NO_FLUSH);
    if err = Z_STREAM_END then
      break;
    CHECK_ERR(err, 'large inflate');
  end;

  err := inflateEnd(d_stream);
  CHECK_ERR(err, 'inflateEnd');

  if d_stream.total_out <> 2 * uncomprLen + comprLen div 2 then
  begin
    WriteLn('bad large inflate: ', d_stream.total_out);
    Halt(1);
  end
  else
    WriteLn('large_inflate(): OK');
end;
{$ENDIF}

(* ===========================================================================
 * Test deflate with full flush
 *)
{$IFDEF TEST_FLUSH}
procedure test_flush(compr: Pointer; var comprLen : LongInt);
var c_stream: z_stream; (* compression stream *)
    err: Integer;
    len: Integer;
begin
  len := StrLen(hello)+1;

  c_stream.zalloc := NIL;
  c_stream.zfree := NIL;
  c_stream.opaque := NIL;

  err := deflateInit(c_stream, Z_DEFAULT_COMPRESSION);
  CHECK_ERR(err, 'deflateInit');

  c_stream.next_in := hello;
  c_stream.next_out := compr;
  c_stream.avail_in := 3;
  c_stream.avail_out := Integer(comprLen);
  err := deflate(c_stream, Z_FULL_FLUSH);
  CHECK_ERR(err, 'deflate');

  Inc(PByteArray(compr)^[3]); (* force an error in first compressed block *)
  c_stream.avail_in := len - 3;

  err := deflate(c_stream, Z_FINISH);
  if err <> Z_STREAM_END then
    CHECK_ERR(err, 'deflate');

  err := deflateEnd(c_stream);
  CHECK_ERR(err, 'deflateEnd');

  comprLen := c_stream.total_out;
end;
{$ENDIF}

(* ===========================================================================
 * Test inflateSync()
 *)
{$IFDEF TEST_SYNC}
procedure test_sync(compr: Pointer; comprLen: LongInt;
                    uncompr: Pointer; uncomprLen : LongInt);
var err: Integer;
    d_stream: z_stream; (* decompression stream *)
begin
  StrCopy(PChar(uncompr), 'garbage');

  d_stream.zalloc := NIL;
  d_stream.zfree := NIL;
  d_stream.opaque := NIL;

  d_stream.next_in := compr;
  d_stream.avail_in := 2; (* just read the zlib header *)

  err := inflateInit(d_stream);
  CHECK_ERR(err, 'inflateInit');

  d_stream.next_out := uncompr;
  d_stream.avail_out := Integer(uncomprLen);

  inflate(d_stream, Z_NO_FLUSH);
  CHECK_ERR(err, 'inflate');

  d_stream.avail_in := Integer(comprLen-2);   (* read all compressed data *)
  err := inflateSync(d_stream);               (* but skip the damaged part *)
  CHECK_ERR(err, 'inflateSync');

  err := inflate(d_stream, Z_FINISH);
  if err <> Z_DATA_ERROR then
    EXIT_ERR('inflate should report DATA_ERROR');
    (* Because of incorrect adler32 *)

  err := inflateEnd(d_stream);
  CHECK_ERR(err, 'inflateEnd');

  WriteLn('after inflateSync(): hel', PChar(uncompr));
end;
{$ENDIF}

(* ===========================================================================
 * Test deflate with preset dictionary
 *)
{$IFDEF TEST_DICT}
procedure test_dict_deflate(compr: Pointer; comprLen: LongInt);
var c_stream: z_stream; (* compression stream *)
    err: Integer;
begin
  c_stream.zalloc := NIL;
  c_stream.zfree := NIL;
  c_stream.opaque := NIL;

  err := deflateInit(c_stream, Z_BEST_COMPRESSION);
  CHECK_ERR(err, 'deflateInit');

  err := deflateSetDictionary(c_stream, dictionary, StrLen(dictionary));
  CHECK_ERR(err, 'deflateSetDictionary');

  dictId := c_stream.adler;
  c_stream.next_out := compr;
  c_stream.avail_out := Integer(comprLen);

  c_stream.next_in := hello;
  c_stream.avail_in := StrLen(hello)+1;

  err := deflate(c_stream, Z_FINISH);
  if err <> Z_STREAM_END then
    EXIT_ERR('deflate should report Z_STREAM_END');

  err := deflateEnd(c_stream);
  CHECK_ERR(err, 'deflateEnd');
end;
{$ENDIF}

(* ===========================================================================
 * Test inflate with a preset dictionary
 *)
{$IFDEF TEST_DICT}
procedure test_dict_inflate(compr: Pointer; comprLen: LongInt;
                            uncompr: Pointer; uncomprLen: LongInt);
var err: Integer;
    d_stream: z_stream; (* decompression stream *)
begin
  StrCopy(PChar(uncompr), 'garbage');

  d_stream.zalloc := NIL;
  d_stream.zfree := NIL;
  d_stream.opaque := NIL;

  d_stream.next_in := compr;
  d_stream.avail_in := Integer(comprLen);

  err := inflateInit(d_stream);
  CHECK_ERR(err, 'inflateInit');

  d_stream.next_out := uncompr;
  d_stream.avail_out := Integer(uncomprLen);

  while TRUE do
  begin
    err := inflate(d_stream, Z_NO_FLUSH);
    if err = Z_STREAM_END then
      break;
    if err = Z_NEED_DICT then
    begin
      if d_stream.adler <> dictId then
        EXIT_ERR('unexpected dictionary');
      err := inflateSetDictionary(d_stream, dictionary, StrLen(dictionary));
    end;
    CHECK_ERR(err, 'inflate with dict');
  end;

  err := inflateEnd(d_stream);
  CHECK_ERR(err, 'inflateEnd');

  if StrComp(PChar(uncompr), hello) <> 0 then
    EXIT_ERR('bad inflate with dict')
  else
    WriteLn('inflate with dictionary: ', PChar(uncompr));
end;
{$ENDIF}

var compr, uncompr: Pointer;
    comprLen, uncomprLen: LongInt;

begin
  if zlibVersion^ <> ZLIB_VERSION[1] then
    EXIT_ERR('Incompatible zlib version');

  WriteLn('zlib version: ', zlibVersion);
  WriteLn('zlib compile flags: ', Format('0x%x', [zlibCompileFlags]));

  comprLen := 10000 * SizeOf(Integer); (* don't overflow on MSDOS *)
  uncomprLen := comprLen;
  GetMem(compr, comprLen);
  GetMem(uncompr, uncomprLen);
  if (compr = NIL) or (uncompr = NIL) then
    EXIT_ERR('Out of memory');
  (* compr and uncompr are cleared to avoid reading uninitialized
   * data and to ensure that uncompr compresses well.
   *)
  FillChar(compr^, comprLen, 0);
  FillChar(uncompr^, uncomprLen, 0);

  {$IFDEF TEST_COMPRESS}
  WriteLn('** Testing compress');
  test_compress(compr, comprLen, uncompr, uncomprLen);
  {$ENDIF}

  {$IFDEF TEST_GZIO}
  WriteLn('** Testing gzio');
  if ParamCount >= 1 then
    test_gzio(ParamStr(1), uncompr, uncomprLen)
  else
    test_gzio(TESTFILE, uncompr, uncomprLen);
  {$ENDIF}

  {$IFDEF TEST_DEFLATE}
  WriteLn('** Testing deflate with small buffers');
  test_deflate(compr, comprLen);
  {$ENDIF}
  {$IFDEF TEST_INFLATE}
  WriteLn('** Testing inflate with small buffers');
  test_inflate(compr, comprLen, uncompr, uncomprLen);
  {$ENDIF}

  {$IFDEF TEST_DEFLATE}
  WriteLn('** Testing deflate with large buffers');
  test_large_deflate(compr, comprLen, uncompr, uncomprLen);
  {$ENDIF}
  {$IFDEF TEST_INFLATE}
  WriteLn('** Testing inflate with large buffers');
  test_large_inflate(compr, comprLen, uncompr, uncomprLen);
  {$ENDIF}

  {$IFDEF TEST_FLUSH}
  WriteLn('** Testing deflate with full flush');
  test_flush(compr, comprLen);
  {$ENDIF}
  {$IFDEF TEST_SYNC}
  WriteLn('** Testing inflateSync');
  test_sync(compr, comprLen, uncompr, uncomprLen);
  {$ENDIF}
  comprLen := uncomprLen;

  {$IFDEF TEST_DICT}
  WriteLn('** Testing deflate and inflate with preset dictionary');
  test_dict_deflate(compr, comprLen);
  test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
  {$ENDIF}

  FreeMem(compr, comprLen);
  FreeMem(uncompr, uncomprLen);
end.
Added compat/zlib/contrib/pascal/readme.txt.












































































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This directory contains a Pascal (Delphi, Kylix) interface to the
zlib data compression library.


Directory listing
=================

zlibd32.mak     makefile for Borland C++
example.pas     usage example of zlib
zlibpas.pas     the Pascal interface to zlib
readme.txt      this file


Compatibility notes
===================

- Although the name "zlib" would have been more normal for the
  zlibpas unit, this name is already taken by Borland's ZLib unit.
  This is somehow unfortunate, because that unit is not a genuine
  interface to the full-fledged zlib functionality, but a suite of
  class wrappers around zlib streams.  Other essential features,
  such as checksums, are missing.
  It would have been more appropriate for that unit to have a name
  like "ZStreams", or something similar.

- The C and zlib-supplied types int, uInt, long, uLong, etc. are
  translated directly into Pascal types of similar sizes (Integer,
  LongInt, etc.), to avoid namespace pollution.  In particular,
  there is no conversion of unsigned int into a Pascal unsigned
  integer.  The Word type is non-portable and has the same size
  (16 bits) both in a 16-bit and in a 32-bit environment, unlike
  Integer.  Even if there is a 32-bit Cardinal type, there is no
  real need for unsigned int in zlib under a 32-bit environment.

- Except for the callbacks, the zlib function interfaces are
  assuming the calling convention normally used in Pascal
  (__pascal for DOS and Windows16, __fastcall for Windows32).
  Since the cdecl keyword is used, the old Turbo Pascal does
  not work with this interface.

- The gz* function interfaces are not translated, to avoid
  interfacing problems with the C runtime library.  Besides,
    gzprintf(gzFile file, const char *format, ...)
  cannot be translated into Pascal.


Legal issues
============

The zlibpas interface is:
  Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler.
  Copyright (C) 1998 by Bob Dellaca.
  Copyright (C) 2003 by Cosmin Truta.

The example program is:
  Copyright (C) 1995-2003 by Jean-loup Gailly.
  Copyright (C) 1998,1999,2000 by Jacques Nomssi Nzali.
  Copyright (C) 2003 by Cosmin Truta.

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the author be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

Added compat/zlib/contrib/pascal/zlibd32.mak.



































































































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# Makefile for zlib
# For use with Delphi and C++ Builder under Win32
# Updated for zlib 1.2.x by Cosmin Truta

# ------------ Borland C++ ------------

# This project uses the Delphi (fastcall/register) calling convention:
LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl

CC = bcc32
LD = bcc32
AR = tlib
# do not use "-pr" in CFLAGS
CFLAGS = -a -d -k- -O2 $(LOC)
LDFLAGS =


# variables
ZLIB_LIB = zlib.lib

OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj


# targets
all: $(ZLIB_LIB) example.exe minigzip.exe

.c.obj:
	$(CC) -c $(CFLAGS) $*.c

adler32.obj: adler32.c zlib.h zconf.h

compress.obj: compress.c zlib.h zconf.h

crc32.obj: crc32.c zlib.h zconf.h crc32.h

deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h

gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h

gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h

gzread.obj: gzread.c zlib.h zconf.h gzguts.h

gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h

infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h

inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h

trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h

uncompr.obj: uncompr.c zlib.h zconf.h

zutil.obj: zutil.c zutil.h zlib.h zconf.h

example.obj: test/example.c zlib.h zconf.h

minigzip.obj: test/minigzip.c zlib.h zconf.h


# For the sake of the old Borland make,
# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
	-del $(ZLIB_LIB)
	$(AR) $(ZLIB_LIB) $(OBJP1)
	$(AR) $(ZLIB_LIB) $(OBJP2)


# testing
test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

example.exe: example.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)

minigzip.exe: minigzip.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)


# cleanup
clean:
	-del *.obj
	-del *.exe
	-del *.lib
	-del *.tds
	-del zlib.bak
	-del foo.gz

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(* zlibpas -- Pascal interface to the zlib data compression library
 *
 * Copyright (C) 2003 Cosmin Truta.
 * Derived from original sources by Bob Dellaca.
 * For conditions of distribution and use, see copyright notice in readme.txt
 *)

unit zlibpas;

interface

const
  ZLIB_VERSION = '1.3.1';
  ZLIB_VERNUM  = $12a0;

type
  alloc_func = function(opaque: Pointer; items, size: Integer): Pointer;
                 cdecl;
  free_func  = procedure(opaque, address: Pointer);
                 cdecl;

  in_func    = function(opaque: Pointer; var buf: PByte): Integer;
                 cdecl;
  out_func   = function(opaque: Pointer; buf: PByte; size: Integer): Integer;
                 cdecl;

  z_streamp = ^z_stream;
  z_stream = packed record
    next_in: PChar;       (* next input byte *)
    avail_in: Integer;    (* number of bytes available at next_in *)
    total_in: LongInt;    (* total nb of input bytes read so far *)

    next_out: PChar;      (* next output byte should be put there *)
    avail_out: Integer;   (* remaining free space at next_out *)
    total_out: LongInt;   (* total nb of bytes output so far *)

    msg: PChar;           (* last error message, NULL if no error *)
    state: Pointer;       (* not visible by applications *)

    zalloc: alloc_func;   (* used to allocate the internal state *)
    zfree: free_func;     (* used to free the internal state *)
    opaque: Pointer;      (* private data object passed to zalloc and zfree *)

    data_type: Integer;   (* best guess about the data type: ascii or binary *)
    adler: LongInt;       (* adler32 value of the uncompressed data *)
    reserved: LongInt;    (* reserved for future use *)
  end;

  gz_headerp = ^gz_header;
  gz_header = packed record
    text: Integer;        (* true if compressed data believed to be text *)
    time: LongInt;        (* modification time *)
    xflags: Integer;      (* extra flags (not used when writing a gzip file) *)
    os: Integer;          (* operating system *)
    extra: PChar;         (* pointer to extra field or Z_NULL if none *)
    extra_len: Integer;   (* extra field length (valid if extra != Z_NULL) *)
    extra_max: Integer;   (* space at extra (only when reading header) *)
    name: PChar;          (* pointer to zero-terminated file name or Z_NULL *)
    name_max: Integer;    (* space at name (only when reading header) *)
    comment: PChar;       (* pointer to zero-terminated comment or Z_NULL *)
    comm_max: Integer;    (* space at comment (only when reading header) *)
    hcrc: Integer;        (* true if there was or will be a header crc *)
    done: Integer;        (* true when done reading gzip header *)
  end;

(* constants *)
const
  Z_NO_FLUSH      = 0;
  Z_PARTIAL_FLUSH = 1;
  Z_SYNC_FLUSH    = 2;
  Z_FULL_FLUSH    = 3;
  Z_FINISH        = 4;
  Z_BLOCK         = 5;
  Z_TREES         = 6;

  Z_OK            =  0;
  Z_STREAM_END    =  1;
  Z_NEED_DICT     =  2;
  Z_ERRNO         = -1;
  Z_STREAM_ERROR  = -2;
  Z_DATA_ERROR    = -3;
  Z_MEM_ERROR     = -4;
  Z_BUF_ERROR     = -5;
  Z_VERSION_ERROR = -6;

  Z_NO_COMPRESSION       =  0;
  Z_BEST_SPEED           =  1;
  Z_BEST_COMPRESSION     =  9;
  Z_DEFAULT_COMPRESSION  = -1;

  Z_FILTERED            = 1;
  Z_HUFFMAN_ONLY        = 2;
  Z_RLE                 = 3;
  Z_FIXED               = 4;
  Z_DEFAULT_STRATEGY    = 0;

  Z_BINARY   = 0;
  Z_TEXT     = 1;
  Z_ASCII    = 1;
  Z_UNKNOWN  = 2;

  Z_DEFLATED = 8;

(* basic functions *)
function zlibVersion: PChar;
function deflateInit(var strm: z_stream; level: Integer): Integer;
function deflate(var strm: z_stream; flush: Integer): Integer;
function deflateEnd(var strm: z_stream): Integer;
function inflateInit(var strm: z_stream): Integer;
function inflate(var strm: z_stream; flush: Integer): Integer;
function inflateEnd(var strm: z_stream): Integer;

(* advanced functions *)
function deflateInit2(var strm: z_stream; level, method, windowBits,
                      memLevel, strategy: Integer): Integer;
function deflateSetDictionary(var strm: z_stream; const dictionary: PChar;
                              dictLength: Integer): Integer;
function deflateCopy(var dest, source: z_stream): Integer;
function deflateReset(var strm: z_stream): Integer;
function deflateParams(var strm: z_stream; level, strategy: Integer): Integer;
function deflateTune(var strm: z_stream; good_length, max_lazy, nice_length, max_chain: Integer): Integer;
function deflateBound(var strm: z_stream; sourceLen: LongInt): LongInt;
function deflatePending(var strm: z_stream; var pending: Integer; var bits: Integer): Integer;
function deflatePrime(var strm: z_stream; bits, value: Integer): Integer;
function deflateSetHeader(var strm: z_stream; head: gz_header): Integer;
function inflateInit2(var strm: z_stream; windowBits: Integer): Integer;
function inflateSetDictionary(var strm: z_stream; const dictionary: PChar;
                              dictLength: Integer): Integer;
function inflateSync(var strm: z_stream): Integer;
function inflateCopy(var dest, source: z_stream): Integer;
function inflateReset(var strm: z_stream): Integer;
function inflateReset2(var strm: z_stream; windowBits: Integer): Integer;
function inflatePrime(var strm: z_stream; bits, value: Integer): Integer;
function inflateMark(var strm: z_stream): LongInt;
function inflateGetHeader(var strm: z_stream; var head: gz_header): Integer;
function inflateBackInit(var strm: z_stream;
                         windowBits: Integer; window: PChar): Integer;
function inflateBack(var strm: z_stream; in_fn: in_func; in_desc: Pointer;
                     out_fn: out_func; out_desc: Pointer): Integer;
function inflateBackEnd(var strm: z_stream): Integer;
function zlibCompileFlags: LongInt;

(* utility functions *)
function compress(dest: PChar; var destLen: LongInt;
                  const source: PChar; sourceLen: LongInt): Integer;
function compress2(dest: PChar; var destLen: LongInt;
                  const source: PChar; sourceLen: LongInt;
                  level: Integer): Integer;
function compressBound(sourceLen: LongInt): LongInt;
function uncompress(dest: PChar; var destLen: LongInt;
                    const source: PChar; sourceLen: LongInt): Integer;

(* checksum functions *)
function adler32(adler: LongInt; const buf: PChar; len: Integer): LongInt;
function adler32_combine(adler1, adler2, len2: LongInt): LongInt;
function crc32(crc: LongInt; const buf: PChar; len: Integer): LongInt;
function crc32_combine(crc1, crc2, len2: LongInt): LongInt;

(* various hacks, don't look :) *)
function deflateInit_(var strm: z_stream; level: Integer;
                      const version: PChar; stream_size: Integer): Integer;
function inflateInit_(var strm: z_stream; const version: PChar;
                      stream_size: Integer): Integer;
function deflateInit2_(var strm: z_stream;
                       level, method, windowBits, memLevel, strategy: Integer;
                       const version: PChar; stream_size: Integer): Integer;
function inflateInit2_(var strm: z_stream; windowBits: Integer;
                       const version: PChar; stream_size: Integer): Integer;
function inflateBackInit_(var strm: z_stream;
                          windowBits: Integer; window: PChar;
                          const version: PChar; stream_size: Integer): Integer;


implementation

{$L adler32.obj}
{$L compress.obj}
{$L crc32.obj}
{$L deflate.obj}
{$L infback.obj}
{$L inffast.obj}
{$L inflate.obj}
{$L inftrees.obj}
{$L trees.obj}
{$L uncompr.obj}
{$L zutil.obj}

function adler32; external;
function adler32_combine; external;
function compress; external;
function compress2; external;
function compressBound; external;
function crc32; external;
function crc32_combine; external;
function deflate; external;
function deflateBound; external;
function deflateCopy; external;
function deflateEnd; external;
function deflateInit_; external;
function deflateInit2_; external;
function deflateParams; external;
function deflatePending; external;
function deflatePrime; external;
function deflateReset; external;
function deflateSetDictionary; external;
function deflateSetHeader; external;
function deflateTune; external;
function inflate; external;
function inflateBack; external;
function inflateBackEnd; external;
function inflateBackInit_; external;
function inflateCopy; external;
function inflateEnd; external;
function inflateGetHeader; external;
function inflateInit_; external;
function inflateInit2_; external;
function inflateMark; external;
function inflatePrime; external;
function inflateReset; external;
function inflateReset2; external;
function inflateSetDictionary; external;
function inflateSync; external;
function uncompress; external;
function zlibCompileFlags; external;
function zlibVersion; external;

function deflateInit(var strm: z_stream; level: Integer): Integer;
begin
  Result := deflateInit_(strm, level, ZLIB_VERSION, sizeof(z_stream));
end;

function deflateInit2(var strm: z_stream; level, method, windowBits, memLevel,
                      strategy: Integer): Integer;
begin
  Result := deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
                          ZLIB_VERSION, sizeof(z_stream));
end;

function inflateInit(var strm: z_stream): Integer;
begin
  Result := inflateInit_(strm, ZLIB_VERSION, sizeof(z_stream));
end;

function inflateInit2(var strm: z_stream; windowBits: Integer): Integer;
begin
  Result := inflateInit2_(strm, windowBits, ZLIB_VERSION, sizeof(z_stream));
end;

function inflateBackInit(var strm: z_stream;
                         windowBits: Integer; window: PChar): Integer;
begin
  Result := inflateBackInit_(strm, windowBits, window,
                             ZLIB_VERSION, sizeof(z_stream));
end;

function _malloc(Size: Integer): Pointer; cdecl;
begin
  GetMem(Result, Size);
end;

procedure _free(Block: Pointer); cdecl;
begin
  FreeMem(Block);
end;

procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
begin
  FillChar(P^, count, B);
end;

procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
begin
  Move(source^, dest^, count);
end;

end.
Added compat/zlib/contrib/puff/Makefile.










































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CFLAGS=-O

puff: puff.o pufftest.o

puff.o: puff.h

pufftest.o: puff.h

test: puff
	puff zeros.raw

puft: puff.c puff.h pufftest.o
	cc -fprofile-arcs -ftest-coverage -o puft puff.c pufftest.o

# puff full coverage test (should say 100%)
cov: puft
	@rm -f *.gcov *.gcda
	@puft -w zeros.raw 2>&1 | cat > /dev/null
	@echo '04' | xxd -r -p | puft 2> /dev/null || test $$? -eq 2
	@echo '00' | xxd -r -p | puft 2> /dev/null || test $$? -eq 2
	@echo '00 00 00 00 00' | xxd -r -p | puft 2> /dev/null || test $$? -eq 254
	@echo '00 01 00 fe ff' | xxd -r -p | puft 2> /dev/null || test $$? -eq 2
	@echo '01 01 00 fe ff 0a' | xxd -r -p | puft -f 2>&1 | cat > /dev/null
	@echo '02 7e ff ff' | xxd -r -p | puft 2> /dev/null || test $$? -eq 246
	@echo '02' | xxd -r -p | puft 2> /dev/null || test $$? -eq 2
	@echo '04 80 49 92 24 49 92 24 0f b4 ff ff c3 04' | xxd -r -p | puft 2> /dev/null || test $$? -eq 2
	@echo '04 80 49 92 24 49 92 24 71 ff ff 93 11 00' | xxd -r -p | puft 2> /dev/null || test $$? -eq 249
	@echo '04 c0 81 08 00 00 00 00 20 7f eb 0b 00 00' | xxd -r -p | puft 2> /dev/null || test $$? -eq 246
	@echo '0b 00 00' | xxd -r -p | puft -f 2>&1 | cat > /dev/null
	@echo '1a 07' | xxd -r -p | puft 2> /dev/null || test $$? -eq 246
	@echo '0c c0 81 00 00 00 00 00 90 ff 6b 04' | xxd -r -p | puft 2> /dev/null || test $$? -eq 245
	@puft -f zeros.raw 2>&1 | cat > /dev/null
	@echo 'fc 00 00' | xxd -r -p | puft 2> /dev/null || test $$? -eq 253
	@echo '04 00 fe ff' | xxd -r -p | puft 2> /dev/null || test $$? -eq 252
	@echo '04 00 24 49' | xxd -r -p | puft 2> /dev/null || test $$? -eq 251
	@echo '04 80 49 92 24 49 92 24 0f b4 ff ff c3 84' | xxd -r -p | puft 2> /dev/null || test $$? -eq 248
	@echo '04 00 24 e9 ff ff' | xxd -r -p | puft 2> /dev/null || test $$? -eq 250
	@echo '04 00 24 e9 ff 6d' | xxd -r -p | puft 2> /dev/null || test $$? -eq 247
	@gcov -n puff.c

clean:
	rm -f puff puft *.o *.gc*
Added compat/zlib/contrib/puff/README.































































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Puff -- A Simple Inflate
3 Mar 2003
Mark Adler
madler@alumni.caltech.edu

What this is --

puff.c provides the routine puff() to decompress the deflate data format.  It
does so more slowly than zlib, but the code is about one-fifth the size of the
inflate code in zlib, and written to be very easy to read.

Why I wrote this --

puff.c was written to document the deflate format unambiguously, by virtue of
being working C code.  It is meant to supplement RFC 1951, which formally
describes the deflate format.  I have received many questions on details of the
deflate format, and I hope that reading this code will answer those questions.
puff.c is heavily commented with details of the deflate format, especially
those little nooks and cranies of the format that might not be obvious from a
specification.

puff.c may also be useful in applications where code size or memory usage is a
very limited resource, and speed is not as important.

How to use it --

Well, most likely you should just be reading puff.c and using zlib for actual
applications, but if you must ...

Include puff.h in your code, which provides this prototype:

int puff(unsigned char *dest,           /* pointer to destination pointer */
         unsigned long *destlen,        /* amount of output space */
         unsigned char *source,         /* pointer to source data pointer */
         unsigned long *sourcelen);     /* amount of input available */

Then you can call puff() to decompress a deflate stream that is in memory in
its entirety at source, to a sufficiently sized block of memory for the
decompressed data at dest.  puff() is the only external symbol in puff.c  The
only C library functions that puff.c needs are setjmp() and longjmp(), which
are used to simplify error checking in the code to improve readability.  puff.c
does no memory allocation, and uses less than 2K bytes off of the stack.

If destlen is not enough space for the uncompressed data, then inflate will
return an error without writing more than destlen bytes.  Note that this means
that in order to decompress the deflate data successfully, you need to know
the size of the uncompressed data ahead of time.

If needed, puff() can determine the size of the uncompressed data with no
output space.  This is done by passing dest equal to (unsigned char *)0.  Then
the initial value of *destlen is ignored and *destlen is set to the length of
the uncompressed data.  So if the size of the uncompressed data is not known,
then two passes of puff() can be used--first to determine the size, and second
to do the actual inflation after allocating the appropriate memory.  Not
pretty, but it works.  (This is one of the reasons you should be using zlib.)

The deflate format is self-terminating.  If the deflate stream does not end
in *sourcelen bytes, puff() will return an error without reading at or past
endsource.

On return, *sourcelen is updated to the amount of input data consumed, and
*destlen is updated to the size of the uncompressed data.  See the comments
in puff.c for the possible return codes for puff().
Added compat/zlib/contrib/puff/puff.c.








































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * puff.c
 * Copyright (C) 2002-2013 Mark Adler
 * For conditions of distribution and use, see copyright notice in puff.h
 * version 2.3, 21 Jan 2013
 *
 * puff.c is a simple inflate written to be an unambiguous way to specify the
 * deflate format.  It is not written for speed but rather simplicity.  As a
 * side benefit, this code might actually be useful when small code is more
 * important than speed, such as bootstrap applications.  For typical deflate
 * data, zlib's inflate() is about four times as fast as puff().  zlib's
 * inflate compiles to around 20K on my machine, whereas puff.c compiles to
 * around 4K on my machine (a PowerPC using GNU cc).  If the faster decode()
 * function here is used, then puff() is only twice as slow as zlib's
 * inflate().
 *
 * All dynamically allocated memory comes from the stack.  The stack required
 * is less than 2K bytes.  This code is compatible with 16-bit int's and
 * assumes that long's are at least 32 bits.  puff.c uses the short data type,
 * assumed to be 16 bits, for arrays in order to conserve memory.  The code
 * works whether integers are stored big endian or little endian.
 *
 * In the comments below are "Format notes" that describe the inflate process
 * and document some of the less obvious aspects of the format.  This source
 * code is meant to supplement RFC 1951, which formally describes the deflate
 * format:
 *
 *    http://www.zlib.org/rfc-deflate.html
 */

/*
 * Change history:
 *
 * 1.0  10 Feb 2002     - First version
 * 1.1  17 Feb 2002     - Clarifications of some comments and notes
 *                      - Update puff() dest and source pointers on negative
 *                        errors to facilitate debugging deflators
 *                      - Remove longest from struct huffman -- not needed
 *                      - Simplify offs[] index in construct()
 *                      - Add input size and checking, using longjmp() to
 *                        maintain easy readability
 *                      - Use short data type for large arrays
 *                      - Use pointers instead of long to specify source and
 *                        destination sizes to avoid arbitrary 4 GB limits
 * 1.2  17 Mar 2002     - Add faster version of decode(), doubles speed (!),
 *                        but leave simple version for readability
 *                      - Make sure invalid distances detected if pointers
 *                        are 16 bits
 *                      - Fix fixed codes table error
 *                      - Provide a scanning mode for determining size of
 *                        uncompressed data
 * 1.3  20 Mar 2002     - Go back to lengths for puff() parameters [Gailly]
 *                      - Add a puff.h file for the interface
 *                      - Add braces in puff() for else do [Gailly]
 *                      - Use indexes instead of pointers for readability
 * 1.4  31 Mar 2002     - Simplify construct() code set check
 *                      - Fix some comments
 *                      - Add FIXLCODES #define
 * 1.5   6 Apr 2002     - Minor comment fixes
 * 1.6   7 Aug 2002     - Minor format changes
 * 1.7   3 Mar 2003     - Added test code for distribution
 *                      - Added zlib-like license
 * 1.8   9 Jan 2004     - Added some comments on no distance codes case
 * 1.9  21 Feb 2008     - Fix bug on 16-bit integer architectures [Pohland]
 *                      - Catch missing end-of-block symbol error
 * 2.0  25 Jul 2008     - Add #define to permit distance too far back
 *                      - Add option in TEST code for puff to write the data
 *                      - Add option in TEST code to skip input bytes
 *                      - Allow TEST code to read from piped stdin
 * 2.1   4 Apr 2010     - Avoid variable initialization for happier compilers
 *                      - Avoid unsigned comparisons for even happier compilers
 * 2.2  25 Apr 2010     - Fix bug in variable initializations [Oberhumer]
 *                      - Add const where appropriate [Oberhumer]
 *                      - Split if's and ?'s for coverage testing
 *                      - Break out test code to separate file
 *                      - Move NIL to puff.h
 *                      - Allow incomplete code only if single code length is 1
 *                      - Add full code coverage test to Makefile
 * 2.3  21 Jan 2013     - Check for invalid code length codes in dynamic blocks
 */

#include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
#include "puff.h"               /* prototype for puff() */

#define local static            /* for local function definitions */

/*
 * Maximums for allocations and loops.  It is not useful to change these --
 * they are fixed by the deflate format.
 */
#define MAXBITS 15              /* maximum bits in a code */
#define MAXLCODES 286           /* maximum number of literal/length codes */
#define MAXDCODES 30            /* maximum number of distance codes */
#define MAXCODES (MAXLCODES+MAXDCODES)  /* maximum codes lengths to read */
#define FIXLCODES 288           /* number of fixed literal/length codes */

/* input and output state */
struct state {
    /* output state */
    unsigned char *out;         /* output buffer */
    unsigned long outlen;       /* available space at out */
    unsigned long outcnt;       /* bytes written to out so far */

    /* input state */
    const unsigned char *in;    /* input buffer */
    unsigned long inlen;        /* available input at in */
    unsigned long incnt;        /* bytes read so far */
    int bitbuf;                 /* bit buffer */
    int bitcnt;                 /* number of bits in bit buffer */

    /* input limit error return state for bits() and decode() */
    jmp_buf env;
};

/*
 * Return need bits from the input stream.  This always leaves less than
 * eight bits in the buffer.  bits() works properly for need == 0.
 *
 * Format notes:
 *
 * - Bits are stored in bytes from the least significant bit to the most
 *   significant bit.  Therefore bits are dropped from the bottom of the bit
 *   buffer, using shift right, and new bytes are appended to the top of the
 *   bit buffer, using shift left.
 */
local int bits(struct state *s, int need)
{
    long val;           /* bit accumulator (can use up to 20 bits) */

    /* load at least need bits into val */
    val = s->bitbuf;
    while (s->bitcnt < need) {
        if (s->incnt == s->inlen)
            longjmp(s->env, 1);         /* out of input */
        val |= (long)(s->in[s->incnt++]) << s->bitcnt;  /* load eight bits */
        s->bitcnt += 8;
    }

    /* drop need bits and update buffer, always zero to seven bits left */
    s->bitbuf = (int)(val >> need);
    s->bitcnt -= need;

    /* return need bits, zeroing the bits above that */
    return (int)(val & ((1L << need) - 1));
}

/*
 * Process a stored block.
 *
 * Format notes:
 *
 * - After the two-bit stored block type (00), the stored block length and
 *   stored bytes are byte-aligned for fast copying.  Therefore any leftover
 *   bits in the byte that has the last bit of the type, as many as seven, are
 *   discarded.  The value of the discarded bits are not defined and should not
 *   be checked against any expectation.
 *
 * - The second inverted copy of the stored block length does not have to be
 *   checked, but it's probably a good idea to do so anyway.
 *
 * - A stored block can have zero length.  This is sometimes used to byte-align
 *   subsets of the compressed data for random access or partial recovery.
 */
local int stored(struct state *s)
{
    unsigned len;       /* length of stored block */

    /* discard leftover bits from current byte (assumes s->bitcnt < 8) */
    s->bitbuf = 0;
    s->bitcnt = 0;

    /* get length and check against its one's complement */
    if (s->incnt + 4 > s->inlen)
        return 2;                               /* not enough input */
    len = s->in[s->incnt++];
    len |= s->in[s->incnt++] << 8;
    if (s->in[s->incnt++] != (~len & 0xff) ||
        s->in[s->incnt++] != ((~len >> 8) & 0xff))
        return -2;                              /* didn't match complement! */

    /* copy len bytes from in to out */
    if (s->incnt + len > s->inlen)
        return 2;                               /* not enough input */
    if (s->out != NIL) {
        if (s->outcnt + len > s->outlen)
            return 1;                           /* not enough output space */
        while (len--)
            s->out[s->outcnt++] = s->in[s->incnt++];
    }
    else {                                      /* just scanning */
        s->outcnt += len;
        s->incnt += len;
    }

    /* done with a valid stored block */
    return 0;
}

/*
 * Huffman code decoding tables.  count[1..MAXBITS] is the number of symbols of
 * each length, which for a canonical code are stepped through in order.
 * symbol[] are the symbol values in canonical order, where the number of
 * entries is the sum of the counts in count[].  The decoding process can be
 * seen in the function decode() below.
 */
struct huffman {
    short *count;       /* number of symbols of each length */
    short *symbol;      /* canonically ordered symbols */
};

/*
 * Decode a code from the stream s using huffman table h.  Return the symbol or
 * a negative value if there is an error.  If all of the lengths are zero, i.e.
 * an empty code, or if the code is incomplete and an invalid code is received,
 * then -10 is returned after reading MAXBITS bits.
 *
 * Format notes:
 *
 * - The codes as stored in the compressed data are bit-reversed relative to
 *   a simple integer ordering of codes of the same lengths.  Hence below the
 *   bits are pulled from the compressed data one at a time and used to
 *   build the code value reversed from what is in the stream in order to
 *   permit simple integer comparisons for decoding.  A table-based decoding
 *   scheme (as used in zlib) does not need to do this reversal.
 *
 * - The first code for the shortest length is all zeros.  Subsequent codes of
 *   the same length are simply integer increments of the previous code.  When
 *   moving up a length, a zero bit is appended to the code.  For a complete
 *   code, the last code of the longest length will be all ones.
 *
 * - Incomplete codes are handled by this decoder, since they are permitted
 *   in the deflate format.  See the format notes for fixed() and dynamic().
 */
#ifdef SLOW
local int decode(struct state *s, const struct huffman *h)
{
    int len;            /* current number of bits in code */
    int code;           /* len bits being decoded */
    int first;          /* first code of length len */
    int count;          /* number of codes of length len */
    int index;          /* index of first code of length len in symbol table */

    code = first = index = 0;
    for (len = 1; len <= MAXBITS; len++) {
        code |= bits(s, 1);             /* get next bit */
        count = h->count[len];
        if (code - count < first)       /* if length len, return symbol */
            return h->symbol[index + (code - first)];
        index += count;                 /* else update for next length */
        first += count;
        first <<= 1;
        code <<= 1;
    }
    return -10;                         /* ran out of codes */
}

/*
 * A faster version of decode() for real applications of this code.   It's not
 * as readable, but it makes puff() twice as fast.  And it only makes the code
 * a few percent larger.
 */
#else /* !SLOW */
local int decode(struct state *s, const struct huffman *h)
{
    int len;            /* current number of bits in code */
    int code;           /* len bits being decoded */
    int first;          /* first code of length len */
    int count;          /* number of codes of length len */
    int index;          /* index of first code of length len in symbol table */
    int bitbuf;         /* bits from stream */
    int left;           /* bits left in next or left to process */
    short *next;        /* next number of codes */

    bitbuf = s->bitbuf;
    left = s->bitcnt;
    code = first = index = 0;
    len = 1;
    next = h->count + 1;
    while (1) {
        while (left--) {
            code |= bitbuf & 1;
            bitbuf >>= 1;
            count = *next++;
            if (code - count < first) { /* if length len, return symbol */
                s->bitbuf = bitbuf;
                s->bitcnt = (s->bitcnt - len) & 7;
                return h->symbol[index + (code - first)];
            }
            index += count;             /* else update for next length */
            first += count;
            first <<= 1;
            code <<= 1;
            len++;
        }
        left = (MAXBITS+1) - len;
        if (left == 0)
            break;
        if (s->incnt == s->inlen)
            longjmp(s->env, 1);         /* out of input */
        bitbuf = s->in[s->incnt++];
        if (left > 8)
            left = 8;
    }
    return -10;                         /* ran out of codes */
}
#endif /* SLOW */

/*
 * Given the list of code lengths length[0..n-1] representing a canonical
 * Huffman code for n symbols, construct the tables required to decode those
 * codes.  Those tables are the number of codes of each length, and the symbols
 * sorted by length, retaining their original order within each length.  The
 * return value is zero for a complete code set, negative for an over-
 * subscribed code set, and positive for an incomplete code set.  The tables
 * can be used if the return value is zero or positive, but they cannot be used
 * if the return value is negative.  If the return value is zero, it is not
 * possible for decode() using that table to return an error--any stream of
 * enough bits will resolve to a symbol.  If the return value is positive, then
 * it is possible for decode() using that table to return an error for received
 * codes past the end of the incomplete lengths.
 *
 * Not used by decode(), but used for error checking, h->count[0] is the number
 * of the n symbols not in the code.  So n - h->count[0] is the number of
 * codes.  This is useful for checking for incomplete codes that have more than
 * one symbol, which is an error in a dynamic block.
 *
 * Assumption: for all i in 0..n-1, 0 <= length[i] <= MAXBITS
 * This is assured by the construction of the length arrays in dynamic() and
 * fixed() and is not verified by construct().
 *
 * Format notes:
 *
 * - Permitted and expected examples of incomplete codes are one of the fixed
 *   codes and any code with a single symbol which in deflate is coded as one
 *   bit instead of zero bits.  See the format notes for fixed() and dynamic().
 *
 * - Within a given code length, the symbols are kept in ascending order for
 *   the code bits definition.
 */
local int construct(struct huffman *h, const short *length, int n)
{
    int symbol;         /* current symbol when stepping through length[] */
    int len;            /* current length when stepping through h->count[] */
    int left;           /* number of possible codes left of current length */
    short offs[MAXBITS+1];      /* offsets in symbol table for each length */

    /* count number of codes of each length */
    for (len = 0; len <= MAXBITS; len++)
        h->count[len] = 0;
    for (symbol = 0; symbol < n; symbol++)
        (h->count[length[symbol]])++;   /* assumes lengths are within bounds */
    if (h->count[0] == n)               /* no codes! */
        return 0;                       /* complete, but decode() will fail */

    /* check for an over-subscribed or incomplete set of lengths */
    left = 1;                           /* one possible code of zero length */
    for (len = 1; len <= MAXBITS; len++) {
        left <<= 1;                     /* one more bit, double codes left */
        left -= h->count[len];          /* deduct count from possible codes */
        if (left < 0)
            return left;                /* over-subscribed--return negative */
    }                                   /* left > 0 means incomplete */

    /* generate offsets into symbol table for each length for sorting */
    offs[1] = 0;
    for (len = 1; len < MAXBITS; len++)
        offs[len + 1] = offs[len] + h->count[len];

    /*
     * put symbols in table sorted by length, by symbol order within each
     * length
     */
    for (symbol = 0; symbol < n; symbol++)
        if (length[symbol] != 0)
            h->symbol[offs[length[symbol]]++] = symbol;

    /* return zero for complete set, positive for incomplete set */
    return left;
}

/*
 * Decode literal/length and distance codes until an end-of-block code.
 *
 * Format notes:
 *
 * - Compressed data that is after the block type if fixed or after the code
 *   description if dynamic is a combination of literals and length/distance
 *   pairs terminated by and end-of-block code.  Literals are simply Huffman
 *   coded bytes.  A length/distance pair is a coded length followed by a
 *   coded distance to represent a string that occurs earlier in the
 *   uncompressed data that occurs again at the current location.
 *
 * - Literals, lengths, and the end-of-block code are combined into a single
 *   code of up to 286 symbols.  They are 256 literals (0..255), 29 length
 *   symbols (257..285), and the end-of-block symbol (256).
 *
 * - There are 256 possible lengths (3..258), and so 29 symbols are not enough
 *   to represent all of those.  Lengths 3..10 and 258 are in fact represented
 *   by just a length symbol.  Lengths 11..257 are represented as a symbol and
 *   some number of extra bits that are added as an integer to the base length
 *   of the length symbol.  The number of extra bits is determined by the base
 *   length symbol.  These are in the static arrays below, lens[] for the base
 *   lengths and lext[] for the corresponding number of extra bits.
 *
 * - The reason that 258 gets its own symbol is that the longest length is used
 *   often in highly redundant files.  Note that 258 can also be coded as the
 *   base value 227 plus the maximum extra value of 31.  While a good deflate
 *   should never do this, it is not an error, and should be decoded properly.
 *
 * - If a length is decoded, including its extra bits if any, then it is
 *   followed a distance code.  There are up to 30 distance symbols.  Again
 *   there are many more possible distances (1..32768), so extra bits are added
 *   to a base value represented by the symbol.  The distances 1..4 get their
 *   own symbol, but the rest require extra bits.  The base distances and
 *   corresponding number of extra bits are below in the static arrays dist[]
 *   and dext[].
 *
 * - Literal bytes are simply written to the output.  A length/distance pair is
 *   an instruction to copy previously uncompressed bytes to the output.  The
 *   copy is from distance bytes back in the output stream, copying for length
 *   bytes.
 *
 * - Distances pointing before the beginning of the output data are not
 *   permitted.
 *
 * - Overlapped copies, where the length is greater than the distance, are
 *   allowed and common.  For example, a distance of one and a length of 258
 *   simply copies the last byte 258 times.  A distance of four and a length of
 *   twelve copies the last four bytes three times.  A simple forward copy
 *   ignoring whether the length is greater than the distance or not implements
 *   this correctly.  You should not use memcpy() since its behavior is not
 *   defined for overlapped arrays.  You should not use memmove() or bcopy()
 *   since though their behavior -is- defined for overlapping arrays, it is
 *   defined to do the wrong thing in this case.
 */
local int codes(struct state *s,
                const struct huffman *lencode,
                const struct huffman *distcode)
{
    int symbol;         /* decoded symbol */
    int len;            /* length for copy */
    unsigned dist;      /* distance for copy */
    static const short lens[29] = { /* Size base for length codes 257..285 */
        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258};
    static const short lext[29] = { /* Extra bits for length codes 257..285 */
        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
        3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
    static const short dists[30] = { /* Offset base for distance codes 0..29 */
        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
        8193, 12289, 16385, 24577};
    static const short dext[30] = { /* Extra bits for distance codes 0..29 */
        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
        7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
        12, 12, 13, 13};

    /* decode literals and length/distance pairs */
    do {
        symbol = decode(s, lencode);
        if (symbol < 0)
            return symbol;              /* invalid symbol */
        if (symbol < 256) {             /* literal: symbol is the byte */
            /* write out the literal */
            if (s->out != NIL) {
                if (s->outcnt == s->outlen)
                    return 1;
                s->out[s->outcnt] = symbol;
            }
            s->outcnt++;
        }
        else if (symbol > 256) {        /* length */
            /* get and compute length */
            symbol -= 257;
            if (symbol >= 29)
                return -10;             /* invalid fixed code */
            len = lens[symbol] + bits(s, lext[symbol]);

            /* get and check distance */
            symbol = decode(s, distcode);
            if (symbol < 0)
                return symbol;          /* invalid symbol */
            dist = dists[symbol] + bits(s, dext[symbol]);
#ifndef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
            if (dist > s->outcnt)
                return -11;     /* distance too far back */
#endif

            /* copy length bytes from distance bytes back */
            if (s->out != NIL) {
                if (s->outcnt + len > s->outlen)
                    return 1;
                while (len--) {
                    s->out[s->outcnt] =
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
                        dist > s->outcnt ?
                            0 :
#endif
                            s->out[s->outcnt - dist];
                    s->outcnt++;
                }
            }
            else
                s->outcnt += len;
        }
    } while (symbol != 256);            /* end of block symbol */

    /* done with a valid fixed or dynamic block */
    return 0;
}

/*
 * Process a fixed codes block.
 *
 * Format notes:
 *
 * - This block type can be useful for compressing small amounts of data for
 *   which the size of the code descriptions in a dynamic block exceeds the
 *   benefit of custom codes for that block.  For fixed codes, no bits are
 *   spent on code descriptions.  Instead the code lengths for literal/length
 *   codes and distance codes are fixed.  The specific lengths for each symbol
 *   can be seen in the "for" loops below.
 *
 * - The literal/length code is complete, but has two symbols that are invalid
 *   and should result in an error if received.  This cannot be implemented
 *   simply as an incomplete code since those two symbols are in the "middle"
 *   of the code.  They are eight bits long and the longest literal/length\
 *   code is nine bits.  Therefore the code must be constructed with those
 *   symbols, and the invalid symbols must be detected after decoding.
 *
 * - The fixed distance codes also have two invalid symbols that should result
 *   in an error if received.  Since all of the distance codes are the same
 *   length, this can be implemented as an incomplete code.  Then the invalid
 *   codes are detected while decoding.
 */
local int fixed(struct state *s)
{
    static int virgin = 1;
    static short lencnt[MAXBITS+1], lensym[FIXLCODES];
    static short distcnt[MAXBITS+1], distsym[MAXDCODES];
    static struct huffman lencode, distcode;

    /* build fixed huffman tables if first call (may not be thread safe) */
    if (virgin) {
        int symbol;
        short lengths[FIXLCODES];

        /* construct lencode and distcode */
        lencode.count = lencnt;
        lencode.symbol = lensym;
        distcode.count = distcnt;
        distcode.symbol = distsym;

        /* literal/length table */
        for (symbol = 0; symbol < 144; symbol++)
            lengths[symbol] = 8;
        for (; symbol < 256; symbol++)
            lengths[symbol] = 9;
        for (; symbol < 280; symbol++)
            lengths[symbol] = 7;
        for (; symbol < FIXLCODES; symbol++)
            lengths[symbol] = 8;
        construct(&lencode, lengths, FIXLCODES);

        /* distance table */
        for (symbol = 0; symbol < MAXDCODES; symbol++)
            lengths[symbol] = 5;
        construct(&distcode, lengths, MAXDCODES);

        /* do this just once */
        virgin = 0;
    }

    /* decode data until end-of-block code */
    return codes(s, &lencode, &distcode);
}

/*
 * Process a dynamic codes block.
 *
 * Format notes:
 *
 * - A dynamic block starts with a description of the literal/length and
 *   distance codes for that block.  New dynamic blocks allow the compressor to
 *   rapidly adapt to changing data with new codes optimized for that data.
 *
 * - The codes used by the deflate format are "canonical", which means that
 *   the actual bits of the codes are generated in an unambiguous way simply
 *   from the number of bits in each code.  Therefore the code descriptions
 *   are simply a list of code lengths for each symbol.
 *
 * - The code lengths are stored in order for the symbols, so lengths are
 *   provided for each of the literal/length symbols, and for each of the
 *   distance symbols.
 *
 * - If a symbol is not used in the block, this is represented by a zero as the
 *   code length.  This does not mean a zero-length code, but rather that no
 *   code should be created for this symbol.  There is no way in the deflate
 *   format to represent a zero-length code.
 *
 * - The maximum number of bits in a code is 15, so the possible lengths for
 *   any code are 1..15.
 *
 * - The fact that a length of zero is not permitted for a code has an
 *   interesting consequence.  Normally if only one symbol is used for a given
 *   code, then in fact that code could be represented with zero bits.  However
 *   in deflate, that code has to be at least one bit.  So for example, if
 *   only a single distance base symbol appears in a block, then it will be
 *   represented by a single code of length one, in particular one 0 bit.  This
 *   is an incomplete code, since if a 1 bit is received, it has no meaning,
 *   and should result in an error.  So incomplete distance codes of one symbol
 *   should be permitted, and the receipt of invalid codes should be handled.
 *
 * - It is also possible to have a single literal/length code, but that code
 *   must be the end-of-block code, since every dynamic block has one.  This
 *   is not the most efficient way to create an empty block (an empty fixed
 *   block is fewer bits), but it is allowed by the format.  So incomplete
 *   literal/length codes of one symbol should also be permitted.
 *
 * - If there are only literal codes and no lengths, then there are no distance
 *   codes.  This is represented by one distance code with zero bits.
 *
 * - The list of up to 286 length/literal lengths and up to 30 distance lengths
 *   are themselves compressed using Huffman codes and run-length encoding.  In
 *   the list of code lengths, a 0 symbol means no code, a 1..15 symbol means
 *   that length, and the symbols 16, 17, and 18 are run-length instructions.
 *   Each of 16, 17, and 18 are followed by extra bits to define the length of
 *   the run.  16 copies the last length 3 to 6 times.  17 represents 3 to 10
 *   zero lengths, and 18 represents 11 to 138 zero lengths.  Unused symbols
 *   are common, hence the special coding for zero lengths.
 *
 * - The symbols for 0..18 are Huffman coded, and so that code must be
 *   described first.  This is simply a sequence of up to 19 three-bit values
 *   representing no code (0) or the code length for that symbol (1..7).
 *
 * - A dynamic block starts with three fixed-size counts from which is computed
 *   the number of literal/length code lengths, the number of distance code
 *   lengths, and the number of code length code lengths (ok, you come up with
 *   a better name!) in the code descriptions.  For the literal/length and
 *   distance codes, lengths after those provided are considered zero, i.e. no
 *   code.  The code length code lengths are received in a permuted order (see
 *   the order[] array below) to make a short code length code length list more
 *   likely.  As it turns out, very short and very long codes are less likely
 *   to be seen in a dynamic code description, hence what may appear initially
 *   to be a peculiar ordering.
 *
 * - Given the number of literal/length code lengths (nlen) and distance code
 *   lengths (ndist), then they are treated as one long list of nlen + ndist
 *   code lengths.  Therefore run-length coding can and often does cross the
 *   boundary between the two sets of lengths.
 *
 * - So to summarize, the code description at the start of a dynamic block is
 *   three counts for the number of code lengths for the literal/length codes,
 *   the distance codes, and the code length codes.  This is followed by the
 *   code length code lengths, three bits each.  This is used to construct the
 *   code length code which is used to read the remainder of the lengths.  Then
 *   the literal/length code lengths and distance lengths are read as a single
 *   set of lengths using the code length codes.  Codes are constructed from
 *   the resulting two sets of lengths, and then finally you can start
 *   decoding actual compressed data in the block.
 *
 * - For reference, a "typical" size for the code description in a dynamic
 *   block is around 80 bytes.
 */
local int dynamic(struct state *s)
{
    int nlen, ndist, ncode;             /* number of lengths in descriptor */
    int index;                          /* index of lengths[] */
    int err;                            /* construct() return value */
    short lengths[MAXCODES];            /* descriptor code lengths */
    short lencnt[MAXBITS+1], lensym[MAXLCODES];         /* lencode memory */
    short distcnt[MAXBITS+1], distsym[MAXDCODES];       /* distcode memory */
    struct huffman lencode, distcode;   /* length and distance codes */
    static const short order[19] =      /* permutation of code length codes */
        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};

    /* construct lencode and distcode */
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;

    /* get number of lengths in each table, check lengths */
    nlen = bits(s, 5) + 257;
    ndist = bits(s, 5) + 1;
    ncode = bits(s, 4) + 4;
    if (nlen > MAXLCODES || ndist > MAXDCODES)
        return -3;                      /* bad counts */

    /* read code length code lengths (really), missing lengths are zero */
    for (index = 0; index < ncode; index++)
        lengths[order[index]] = bits(s, 3);
    for (; index < 19; index++)
        lengths[order[index]] = 0;

    /* build huffman table for code lengths codes (use lencode temporarily) */
    err = construct(&lencode, lengths, 19);
    if (err != 0)               /* require complete code set here */
        return -4;

    /* read length/literal and distance code length tables */
    index = 0;
    while (index < nlen + ndist) {
        int symbol;             /* decoded value */
        int len;                /* last length to repeat */

        symbol = decode(s, &lencode);
        if (symbol < 0)
            return symbol;          /* invalid symbol */
        if (symbol < 16)                /* length in 0..15 */
            lengths[index++] = symbol;
        else {                          /* repeat instruction */
            len = 0;                    /* assume repeating zeros */
            if (symbol == 16) {         /* repeat last length 3..6 times */
                if (index == 0)
                    return -5;          /* no last length! */
                len = lengths[index - 1];       /* last length */
                symbol = 3 + bits(s, 2);
            }
            else if (symbol == 17)      /* repeat zero 3..10 times */
                symbol = 3 + bits(s, 3);
            else                        /* == 18, repeat zero 11..138 times */
                symbol = 11 + bits(s, 7);
            if (index + symbol > nlen + ndist)
                return -6;              /* too many lengths! */
            while (symbol--)            /* repeat last or zero symbol times */
                lengths[index++] = len;
        }
    }

    /* check for end-of-block code -- there better be one! */
    if (lengths[256] == 0)
        return -9;

    /* build huffman table for literal/length codes */
    err = construct(&lencode, lengths, nlen);
    if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
        return -7;      /* incomplete code ok only for single length 1 code */

    /* build huffman table for distance codes */
    err = construct(&distcode, lengths + nlen, ndist);
    if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
        return -8;      /* incomplete code ok only for single length 1 code */

    /* decode data until end-of-block code */
    return codes(s, &lencode, &distcode);
}

/*
 * Inflate source to dest.  On return, destlen and sourcelen are updated to the
 * size of the uncompressed data and the size of the deflate data respectively.
 * On success, the return value of puff() is zero.  If there is an error in the
 * source data, i.e. it is not in the deflate format, then a negative value is
 * returned.  If there is not enough input available or there is not enough
 * output space, then a positive error is returned.  In that case, destlen and
 * sourcelen are not updated to facilitate retrying from the beginning with the
 * provision of more input data or more output space.  In the case of invalid
 * inflate data (a negative error), the dest and source pointers are updated to
 * facilitate the debugging of deflators.
 *
 * puff() also has a mode to determine the size of the uncompressed output with
 * no output written.  For this dest must be (unsigned char *)0.  In this case,
 * the input value of *destlen is ignored, and on return *destlen is set to the
 * size of the uncompressed output.
 *
 * The return codes are:
 *
 *   2:  available inflate data did not terminate
 *   1:  output space exhausted before completing inflate
 *   0:  successful inflate
 *  -1:  invalid block type (type == 3)
 *  -2:  stored block length did not match one's complement
 *  -3:  dynamic block code description: too many length or distance codes
 *  -4:  dynamic block code description: code lengths codes incomplete
 *  -5:  dynamic block code description: repeat lengths with no first length
 *  -6:  dynamic block code description: repeat more than specified lengths
 *  -7:  dynamic block code description: invalid literal/length code lengths
 *  -8:  dynamic block code description: invalid distance code lengths
 *  -9:  dynamic block code description: missing end-of-block code
 * -10:  invalid literal/length or distance code in fixed or dynamic block
 * -11:  distance is too far back in fixed or dynamic block
 *
 * Format notes:
 *
 * - Three bits are read for each block to determine the kind of block and
 *   whether or not it is the last block.  Then the block is decoded and the
 *   process repeated if it was not the last block.
 *
 * - The leftover bits in the last byte of the deflate data after the last
 *   block (if it was a fixed or dynamic block) are undefined and have no
 *   expected values to check.
 */
int puff(unsigned char *dest,           /* pointer to destination pointer */
         unsigned long *destlen,        /* amount of output space */
         const unsigned char *source,   /* pointer to source data pointer */
         unsigned long *sourcelen)      /* amount of input available */
{
    struct state s;             /* input/output state */
    int last, type;             /* block information */
    int err;                    /* return value */

    /* initialize output state */
    s.out = dest;
    s.outlen = *destlen;                /* ignored if dest is NIL */
    s.outcnt = 0;

    /* initialize input state */
    s.in = source;
    s.inlen = *sourcelen;
    s.incnt = 0;
    s.bitbuf = 0;
    s.bitcnt = 0;

    /* return if bits() or decode() tries to read past available input */
    if (setjmp(s.env) != 0)             /* if came back here via longjmp() */
        err = 2;                        /* then skip do-loop, return error */
    else {
        /* process blocks until last block or error */
        do {
            last = bits(&s, 1);         /* one if last block */
            type = bits(&s, 2);         /* block type 0..3 */
            err = type == 0 ?
                    stored(&s) :
                    (type == 1 ?
                        fixed(&s) :
                        (type == 2 ?
                            dynamic(&s) :
                            -1));       /* type == 3, invalid */
            if (err != 0)
                break;                  /* return with error */
        } while (!last);
    }

    /* update the lengths and return */
    if (err <= 0) {
        *destlen = s.outcnt;
        *sourcelen = s.incnt;
    }
    return err;
}
Added compat/zlib/contrib/puff/puff.h.



































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/* puff.h
  Copyright (C) 2002-2013 Mark Adler, all rights reserved
  version 2.3, 21 Jan 2013

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the author be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Mark Adler    madler@alumni.caltech.edu
 */


/*
 * See puff.c for purpose and usage.
 */
#ifndef NIL
#  define NIL ((unsigned char *)0)      /* for no output option */
#endif

int puff(unsigned char *dest,           /* pointer to destination pointer */
         unsigned long *destlen,        /* amount of output space */
         const unsigned char *source,   /* pointer to source data pointer */
         unsigned long *sourcelen);     /* amount of input available */
Added compat/zlib/contrib/puff/pufftest.c.





































































































































































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/*
 * pufftest.c
 * Copyright (C) 2002-2013 Mark Adler
 * For conditions of distribution and use, see copyright notice in puff.h
 * version 2.3, 21 Jan 2013
 */

/* Example of how to use puff().

   Usage: puff [-w] [-f] [-nnn] file
          ... | puff [-w] [-f] [-nnn]

   where file is the input file with deflate data, nnn is the number of bytes
   of input to skip before inflating (e.g. to skip a zlib or gzip header), and
   -w is used to write the decompressed data to stdout.  -f is for coverage
   testing, and causes pufftest to fail with not enough output space (-f does
   a write like -w, so -w is not required). */

#include <stdio.h>
#include <stdlib.h>
#include "puff.h"

#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
#  include <fcntl.h>
#  include <io.h>
#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#  define SET_BINARY_MODE(file)
#endif

#define local static

/* Return size times approximately the cube root of 2, keeping the result as 1,
   3, or 5 times a power of 2 -- the result is always > size, until the result
   is the maximum value of an unsigned long, where it remains.  This is useful
   to keep reallocations less than ~33% over the actual data. */
local size_t bythirds(size_t size)
{
    int n;
    size_t m;

    m = size;
    for (n = 0; m; n++)
        m >>= 1;
    if (n < 3)
        return size + 1;
    n -= 3;
    m = size >> n;
    m += m == 6 ? 2 : 1;
    m <<= n;
    return m > size ? m : (size_t)(-1);
}

/* Read the input file *name, or stdin if name is NULL, into allocated memory.
   Reallocate to larger buffers until the entire file is read in.  Return a
   pointer to the allocated data, or NULL if there was a memory allocation
   failure.  *len is the number of bytes of data read from the input file (even
   if load() returns NULL).  If the input file was empty or could not be opened
   or read, *len is zero. */
local void *load(const char *name, size_t *len)
{
    size_t size;
    void *buf, *swap;
    FILE *in;

    *len = 0;
    buf = malloc(size = 4096);
    if (buf == NULL)
        return NULL;
    in = name == NULL ? stdin : fopen(name, "rb");
    if (in != NULL) {
        for (;;) {
            *len += fread((char *)buf + *len, 1, size - *len, in);
            if (*len < size) break;
            size = bythirds(size);
            if (size == *len || (swap = realloc(buf, size)) == NULL) {
                free(buf);
                buf = NULL;
                break;
            }
            buf = swap;
        }
        fclose(in);
    }
    return buf;
}

int main(int argc, char **argv)
{
    int ret, put = 0, fail = 0;
    unsigned skip = 0;
    char *arg, *name = NULL;
    unsigned char *source = NULL, *dest;
    size_t len = 0;
    unsigned long sourcelen, destlen;

    /* process arguments */
    while (arg = *++argv, --argc)
        if (arg[0] == '-') {
            if (arg[1] == 'w' && arg[2] == 0)
                put = 1;
            else if (arg[1] == 'f' && arg[2] == 0)
                fail = 1, put = 1;
            else if (arg[1] >= '0' && arg[1] <= '9')
                skip = (unsigned)atoi(arg + 1);
            else {
                fprintf(stderr, "invalid option %s\n", arg);
                return 3;
            }
        }
        else if (name != NULL) {
            fprintf(stderr, "only one file name allowed\n");
            return 3;
        }
        else
            name = arg;
    source = load(name, &len);
    if (source == NULL) {
        fprintf(stderr, "memory allocation failure\n");
        return 4;
    }
    if (len == 0) {
        fprintf(stderr, "could not read %s, or it was empty\n",
                name == NULL ? "<stdin>" : name);
        free(source);
        return 3;
    }
    if (skip >= len) {
        fprintf(stderr, "skip request of %d leaves no input\n", skip);
        free(source);
        return 3;
    }

    /* test inflate data with offset skip */
    len -= skip;
    sourcelen = (unsigned long)len;
    ret = puff(NIL, &destlen, source + skip, &sourcelen);
    if (ret)
        fprintf(stderr, "puff() failed with return code %d\n", ret);
    else {
        fprintf(stderr, "puff() succeeded uncompressing %lu bytes\n", destlen);
        if (sourcelen < len) fprintf(stderr, "%lu compressed bytes unused\n",
                                     len - sourcelen);
    }

    /* if requested, inflate again and write decompressed data to stdout */
    if (put && ret == 0) {
        if (fail)
            destlen >>= 1;
        dest = malloc(destlen);
        if (dest == NULL) {
            fprintf(stderr, "memory allocation failure\n");
            free(source);
            return 4;
        }
        puff(dest, &destlen, source + skip, &sourcelen);
        SET_BINARY_MODE(stdout);
        fwrite(dest, 1, destlen, stdout);
        free(dest);
    }

    /* clean up */
    free(source);
    return ret;
}
Added compat/zlib/contrib/puff/zeros.raw.

cannot compute difference between binary files

Added compat/zlib/contrib/testzlib/testzlib.c.



















































































































































































































































































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#include <stdio.h>
#include <stdlib.h>
#include <windows.h>

#include "zlib.h"


void MyDoMinus64(LARGE_INTEGER *R,LARGE_INTEGER A,LARGE_INTEGER B)
{
    R->HighPart = A.HighPart - B.HighPart;
    if (A.LowPart >= B.LowPart)
        R->LowPart = A.LowPart - B.LowPart;
    else
    {
        R->LowPart = A.LowPart - B.LowPart;
        R->HighPart --;
    }
}

#ifdef _M_X64
// see http://msdn2.microsoft.com/library/twchhe95(en-us,vs.80).aspx for __rdtsc
unsigned __int64 __rdtsc(void);
void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64)
{
 //   printf("rdtsc = %I64x\n",__rdtsc());
   pbeginTime64->QuadPart=__rdtsc();
}

LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)
{
    LARGE_INTEGER LIres;
    unsigned _int64 res=__rdtsc()-((unsigned _int64)(beginTime64.QuadPart));
    LIres.QuadPart=res;
   // printf("rdtsc = %I64x\n",__rdtsc());
    return LIres;
}
#else
#ifdef _M_IX86
void myGetRDTSC32(LARGE_INTEGER * pbeginTime64)
{
    DWORD dwEdx,dwEax;
    _asm
    {
        rdtsc
        mov dwEax,eax
        mov dwEdx,edx
    }
    pbeginTime64->LowPart=dwEax;
    pbeginTime64->HighPart=dwEdx;
}

void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64)
{
    myGetRDTSC32(pbeginTime64);
}

LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)
{
    LARGE_INTEGER LIres,endTime64;
    myGetRDTSC32(&endTime64);

    LIres.LowPart=LIres.HighPart=0;
    MyDoMinus64(&LIres,endTime64,beginTime64);
    return LIres;
}
#else
void myGetRDTSC32(LARGE_INTEGER * pbeginTime64)
{
}

void BeginCountRdtsc(LARGE_INTEGER * pbeginTime64)
{
}

LARGE_INTEGER GetResRdtsc(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)
{
    LARGE_INTEGER lr;
    lr.QuadPart=0;
    return lr;
}
#endif
#endif

void BeginCountPerfCounter(LARGE_INTEGER * pbeginTime64,BOOL fComputeTimeQueryPerf)
{
    if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(pbeginTime64)))
    {
        pbeginTime64->LowPart = GetTickCount();
        pbeginTime64->HighPart = 0;
    }
}

DWORD GetMsecSincePerfCounter(LARGE_INTEGER beginTime64,BOOL fComputeTimeQueryPerf)
{
    LARGE_INTEGER endTime64,ticksPerSecond,ticks;
    DWORDLONG ticksShifted,tickSecShifted;
    DWORD dwLog=16+0;
    DWORD dwRet;
    if ((!fComputeTimeQueryPerf) || (!QueryPerformanceCounter(&endTime64)))
        dwRet = (GetTickCount() - beginTime64.LowPart)*1;
    else
    {
        MyDoMinus64(&ticks,endTime64,beginTime64);
        QueryPerformanceFrequency(&ticksPerSecond);


        {
            ticksShifted = Int64ShrlMod32(*(DWORDLONG*)&ticks,dwLog);
            tickSecShifted = Int64ShrlMod32(*(DWORDLONG*)&ticksPerSecond,dwLog);

        }

        dwRet = (DWORD)((((DWORD)ticksShifted)*1000)/(DWORD)(tickSecShifted));
        dwRet *=1;
    }
    return dwRet;
}

int ReadFileMemory(const char* filename,long* plFileSize,unsigned char** pFilePtr)
{
    FILE* stream;
    unsigned char* ptr;
    int retVal=1;
    stream=fopen(filename, "rb");
    if (stream==NULL)
        return 0;

    fseek(stream,0,SEEK_END);

    *plFileSize=ftell(stream);
    fseek(stream,0,SEEK_SET);
    ptr=malloc((*plFileSize)+1);
    if (ptr==NULL)
        retVal=0;
    else
    {
        if (fread(ptr, 1, *plFileSize,stream) != (*plFileSize))
            retVal=0;
    }
    fclose(stream);
    *pFilePtr=ptr;
    return retVal;
}

int main(int argc, char *argv[])
{
    int BlockSizeCompress=0x8000;
    int BlockSizeUncompress=0x8000;
    int cprLevel=Z_DEFAULT_COMPRESSION ;
    long lFileSize;
    unsigned char* FilePtr;
    long lBufferSizeCpr;
    long lBufferSizeUncpr;
    long lCompressedSize=0;
    unsigned char* CprPtr;
    unsigned char* UncprPtr;
    long lSizeCpr,lSizeUncpr;
    DWORD dwGetTick,dwMsecQP;
    LARGE_INTEGER li_qp,li_rdtsc,dwResRdtsc;

    if (argc<=1)
    {
        printf("run TestZlib <File> [BlockSizeCompress] [BlockSizeUncompress] [compres. level]\n");
        return 0;
    }

    if (ReadFileMemory(argv[1],&lFileSize,&FilePtr)==0)
    {
        printf("error reading %s\n",argv[1]);
        return 1;
    }
    else printf("file %s read, %ld bytes\n",argv[1],lFileSize);

    if (argc>=3)
        BlockSizeCompress=atol(argv[2]);

    if (argc>=4)
        BlockSizeUncompress=atol(argv[3]);

    if (argc>=5)
        cprLevel=(int)atol(argv[4]);

    lBufferSizeCpr = lFileSize + (lFileSize/0x10) + 0x200;
    lBufferSizeUncpr = lBufferSizeCpr;

    CprPtr=(unsigned char*)malloc(lBufferSizeCpr + BlockSizeCompress);

    BeginCountPerfCounter(&li_qp,TRUE);
    dwGetTick=GetTickCount();
    BeginCountRdtsc(&li_rdtsc);
    {
        z_stream zcpr;
        int ret=Z_OK;
        long lOrigToDo = lFileSize;
        long lOrigDone = 0;
        int step=0;
        memset(&zcpr,0,sizeof(z_stream));
        deflateInit(&zcpr,cprLevel);

        zcpr.next_in = FilePtr;
        zcpr.next_out = CprPtr;


        do
        {
            long all_read_before = zcpr.total_in;
            zcpr.avail_in = min(lOrigToDo,BlockSizeCompress);
            zcpr.avail_out = BlockSizeCompress;
            ret=deflate(&zcpr,(zcpr.avail_in==lOrigToDo) ? Z_FINISH : Z_SYNC_FLUSH);
            lOrigDone += (zcpr.total_in-all_read_before);
            lOrigToDo -= (zcpr.total_in-all_read_before);
            step++;
        } while (ret==Z_OK);

        lSizeCpr=zcpr.total_out;
        deflateEnd(&zcpr);
        dwGetTick=GetTickCount()-dwGetTick;
        dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE);
        dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE);
        printf("total compress size = %u, in %u step\n",lSizeCpr,step);
        printf("time = %u msec = %f sec\n",dwGetTick,dwGetTick/(double)1000.);
        printf("defcpr time QP = %u msec = %f sec\n",dwMsecQP,dwMsecQP/(double)1000.);
        printf("defcpr result rdtsc = %I64x\n\n",dwResRdtsc.QuadPart);
    }

    CprPtr=(unsigned char*)realloc(CprPtr,lSizeCpr);
    UncprPtr=(unsigned char*)malloc(lBufferSizeUncpr + BlockSizeUncompress);

    BeginCountPerfCounter(&li_qp,TRUE);
    dwGetTick=GetTickCount();
    BeginCountRdtsc(&li_rdtsc);
    {
        z_stream zcpr;
        int ret=Z_OK;
        long lOrigToDo = lSizeCpr;
        long lOrigDone = 0;
        int step=0;
        memset(&zcpr,0,sizeof(z_stream));
        inflateInit(&zcpr);

        zcpr.next_in = CprPtr;
        zcpr.next_out = UncprPtr;


        do
        {
            long all_read_before = zcpr.total_in;
            zcpr.avail_in = min(lOrigToDo,BlockSizeUncompress);
            zcpr.avail_out = BlockSizeUncompress;
            ret=inflate(&zcpr,Z_SYNC_FLUSH);
            lOrigDone += (zcpr.total_in-all_read_before);
            lOrigToDo -= (zcpr.total_in-all_read_before);
            step++;
        } while (ret==Z_OK);

        lSizeUncpr=zcpr.total_out;
        inflateEnd(&zcpr);
        dwGetTick=GetTickCount()-dwGetTick;
        dwMsecQP=GetMsecSincePerfCounter(li_qp,TRUE);
        dwResRdtsc=GetResRdtsc(li_rdtsc,TRUE);
        printf("total uncompress size = %u, in %u step\n",lSizeUncpr,step);
        printf("time = %u msec = %f sec\n",dwGetTick,dwGetTick/(double)1000.);
        printf("uncpr  time QP = %u msec = %f sec\n",dwMsecQP,dwMsecQP/(double)1000.);
        printf("uncpr  result rdtsc = %I64x\n\n",dwResRdtsc.QuadPart);
    }

    if (lSizeUncpr==lFileSize)
    {
        if (memcmp(FilePtr,UncprPtr,lFileSize)==0)
            printf("compare ok\n");

    }

    return 0;
}
Added compat/zlib/contrib/testzlib/testzlib.txt.










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To build testzLib with Visual Studio 2005:

copy to a directory file from :
- root of zLib tree
- contrib/testzlib
- contrib/masmx86
- contrib/masmx64
- contrib/vstudio/vc7

and open testzlib8.sln
Added compat/zlib/contrib/untgz/Makefile.














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CC=cc
CFLAGS=-g

untgz: untgz.o ../../libz.a
	$(CC) $(CFLAGS) -o untgz untgz.o -L../.. -lz

untgz.o: untgz.c ../../zlib.h
	$(CC) $(CFLAGS) -c -I../.. untgz.c

../../libz.a:
	cd ../..; ./configure; make

clean:
	rm -f untgz untgz.o *~
Added compat/zlib/contrib/untgz/Makefile.msc.

















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CC=cl
CFLAGS=-MD

untgz.exe: untgz.obj ..\..\zlib.lib
	$(CC) $(CFLAGS) untgz.obj ..\..\zlib.lib

untgz.obj: untgz.c ..\..\zlib.h
	$(CC) $(CFLAGS) -c -I..\.. untgz.c

..\..\zlib.lib:
	cd ..\..
	$(MAKE) -f win32\makefile.msc
	cd contrib\untgz

clean:
	-del untgz.obj
	-del untgz.exe
Added compat/zlib/contrib/untgz/untgz.c.



























































































































































































































































































































































































































































































































































































































































































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/*
 * untgz.c -- Display contents and extract files from a gzip'd TAR file
 *
 * written by Pedro A. Aranda Gutierrez <paag@tid.es>
 * adaptation to Unix by Jean-loup Gailly <jloup@gzip.org>
 * various fixes by Cosmin Truta <cosmint@cs.ubbcluj.ro>
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <errno.h>

#include "zlib.h"

#ifdef _WIN32
#  include <direct.h>
#  include <io.h>
#  include <windows.h>
#  ifndef F_OK
#    define F_OK  0
#  endif
#  define mkdir(dirname,mode)   _mkdir(dirname)
#  ifdef _MSC_VER
#    define access(path,mode)   _access(path,mode)
#    define chmod(path,mode)    _chmod(path,mode)
#    define strdup(str)         _strdup(str)
#  endif
#else
#  include <sys/stat.h>
#  include <unistd.h>
#  include <utime.h>
#endif


/* values used in typeflag field */

#define REGTYPE  '0'            /* regular file */
#define AREGTYPE '\0'           /* regular file */
#define LNKTYPE  '1'            /* link */
#define SYMTYPE  '2'            /* reserved */
#define CHRTYPE  '3'            /* character special */
#define BLKTYPE  '4'            /* block special */
#define DIRTYPE  '5'            /* directory */
#define FIFOTYPE '6'            /* FIFO special */
#define CONTTYPE '7'            /* reserved */

/* GNU tar extensions */

#define GNUTYPE_DUMPDIR  'D'    /* file names from dumped directory */
#define GNUTYPE_LONGLINK 'K'    /* long link name */
#define GNUTYPE_LONGNAME 'L'    /* long file name */
#define GNUTYPE_MULTIVOL 'M'    /* continuation of file from another volume */
#define GNUTYPE_NAMES    'N'    /* file name that does not fit into main hdr */
#define GNUTYPE_SPARSE   'S'    /* sparse file */
#define GNUTYPE_VOLHDR   'V'    /* tape/volume header */


/* tar header */

#define BLOCKSIZE     512
#define SHORTNAMESIZE 100

struct tar_header
{                               /* byte offset */
  char name[100];               /*   0 */
  char mode[8];                 /* 100 */
  char uid[8];                  /* 108 */
  char gid[8];                  /* 116 */
  char size[12];                /* 124 */
  char mtime[12];               /* 136 */
  char chksum[8];               /* 148 */
  char typeflag;                /* 156 */
  char linkname[100];           /* 157 */
  char magic[6];                /* 257 */
  char version[2];              /* 263 */
  char uname[32];               /* 265 */
  char gname[32];               /* 297 */
  char devmajor[8];             /* 329 */
  char devminor[8];             /* 337 */
  char prefix[155];             /* 345 */
                                /* 500 */
};

union tar_buffer
{
  char               buffer[BLOCKSIZE];
  struct tar_header  header;
};

struct attr_item
{
  struct attr_item  *next;
  char              *fname;
  int                mode;
  time_t             time;
};

enum { TGZ_EXTRACT, TGZ_LIST, TGZ_INVALID };

char *prog;

void error(const char *msg)
{
  fprintf(stderr, "%s: %s\n", prog, msg);
  exit(1);
}

const char *TGZsuffix[] = { "\0", ".tar", ".tar.gz", ".taz", ".tgz", NULL };

/* return the file name of the TGZ archive */
/* or NULL if it does not exist */

char *TGZfname (const char *arcname)
{
  static char buffer[1024];
  int origlen,i;

  strcpy(buffer,arcname);
  origlen = strlen(buffer);

  for (i=0; TGZsuffix[i]; i++)
    {
       strcpy(buffer+origlen,TGZsuffix[i]);
       if (access(buffer,F_OK) == 0)
         return buffer;
    }
  return NULL;
}


/* error message for the filename */

void TGZnotfound (const char *arcname)
{
  int i;

  fprintf(stderr,"%s: Couldn't find ",prog);
  for (i=0;TGZsuffix[i];i++)
    fprintf(stderr,(TGZsuffix[i+1]) ? "%s%s, " : "or %s%s\n",
            arcname,
            TGZsuffix[i]);
  exit(1);
}


/* convert octal digits to int */
/* on error return -1 */

int getoct (char *p,int width)
{
  int result = 0;
  char c;

  while (width--)
    {
      c = *p++;
      if (c == 0)
        break;
      if (c == ' ')
        continue;
      if (c < '0' || c > '7')
        return -1;
      result = result * 8 + (c - '0');
    }
  return result;
}


/* convert time_t to string */
/* use the "YYYY/MM/DD hh:mm:ss" format */

char *strtime (time_t *t)
{
  struct tm   *local;
  static char result[32];

  local = localtime(t);
  sprintf(result,"%4d/%02d/%02d %02d:%02d:%02d",
          local->tm_year+1900, local->tm_mon+1, local->tm_mday,
          local->tm_hour, local->tm_min, local->tm_sec);
  return result;
}


/* set file time */

int setfiletime (char *fname,time_t ftime)
{
#ifdef _WIN32
  static int isWinNT = -1;
  SYSTEMTIME st;
  FILETIME locft, modft;
  struct tm *loctm;
  HANDLE hFile;
  int result;

  loctm = localtime(&ftime);
  if (loctm == NULL)
    return -1;

  st.wYear         = (WORD)loctm->tm_year + 1900;
  st.wMonth        = (WORD)loctm->tm_mon + 1;
  st.wDayOfWeek    = (WORD)loctm->tm_wday;
  st.wDay          = (WORD)loctm->tm_mday;
  st.wHour         = (WORD)loctm->tm_hour;
  st.wMinute       = (WORD)loctm->tm_min;
  st.wSecond       = (WORD)loctm->tm_sec;
  st.wMilliseconds = 0;
  if (!SystemTimeToFileTime(&st, &locft) ||
      !LocalFileTimeToFileTime(&locft, &modft))
    return -1;

  if (isWinNT < 0)
    isWinNT = (GetVersion() < 0x80000000) ? 1 : 0;
  hFile = CreateFile(fname, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
                     (isWinNT ? FILE_FLAG_BACKUP_SEMANTICS : 0),
                     NULL);
  if (hFile == INVALID_HANDLE_VALUE)
    return -1;
  result = SetFileTime(hFile, NULL, NULL, &modft) ? 0 : -1;
  CloseHandle(hFile);
  return result;
#else
  struct utimbuf settime;

  settime.actime = settime.modtime = ftime;
  return utime(fname,&settime);
#endif
}


/* push file attributes */

void push_attr(struct attr_item **list,char *fname,int mode,time_t time)
{
  struct attr_item *item;

  item = (struct attr_item *)malloc(sizeof(struct attr_item));
  if (item == NULL)
    error("Out of memory");
  item->fname = strdup(fname);
  item->mode  = mode;
  item->time  = time;
  item->next  = *list;
  *list       = item;
}


/* restore file attributes */

void restore_attr(struct attr_item **list)
{
  struct attr_item *item, *prev;

  for (item = *list; item != NULL; )
    {
      setfiletime(item->fname,item->time);
      chmod(item->fname,item->mode);
      prev = item;
      item = item->next;
      free(prev);
    }
  *list = NULL;
}


/* match regular expression */

#define ISSPECIAL(c) (((c) == '*') || ((c) == '/'))

int ExprMatch (char *string,char *expr)
{
  while (1)
    {
      if (ISSPECIAL(*expr))
        {
          if (*expr == '/')
            {
              if (*string != '\\' && *string != '/')
                return 0;
              string ++; expr++;
            }
          else if (*expr == '*')
            {
              if (*expr ++ == 0)
                return 1;
              while (*++string != *expr)
                if (*string == 0)
                  return 0;
            }
        }
      else
        {
          if (*string != *expr)
            return 0;
          if (*expr++ == 0)
            return 1;
          string++;
        }
    }
}


/* recursive mkdir */
/* abort on ENOENT; ignore other errors like "directory already exists" */
/* return 1 if OK */
/*        0 on error */

int makedir (char *newdir)
{
  char *buffer = strdup(newdir);
  char *p;
  int  len = strlen(buffer);

  if (len <= 0) {
    free(buffer);
    return 0;
  }
  if (buffer[len-1] == '/') {
    buffer[len-1] = '\0';
  }
  if (mkdir(buffer, 0755) == 0)
    {
      free(buffer);
      return 1;
    }

  p = buffer+1;
  while (1)
    {
      char hold;

      while(*p && *p != '\\' && *p != '/')
        p++;
      hold = *p;
      *p = 0;
      if ((mkdir(buffer, 0755) == -1) && (errno == ENOENT))
        {
          fprintf(stderr,"%s: Couldn't create directory %s\n",prog,buffer);
          free(buffer);
          return 0;
        }
      if (hold == 0)
        break;
      *p++ = hold;
    }
  free(buffer);
  return 1;
}


int matchname (int arg,int argc,char **argv,char *fname)
{
  if (arg == argc)      /* no arguments given (untgz tgzarchive) */
    return 1;

  while (arg < argc)
    if (ExprMatch(fname,argv[arg++]))
      return 1;

  return 0; /* ignore this for the moment being */
}


/* tar file list or extract */

int tar (gzFile in,int action,int arg,int argc,char **argv)
{
  union  tar_buffer buffer;
  int    len;
  int    err;
  int    getheader = 1;
  int    remaining = 0;
  FILE   *outfile = NULL;
  char   fname[BLOCKSIZE];
  int    tarmode;
  time_t tartime;
  struct attr_item *attributes = NULL;

  if (action == TGZ_LIST)
    printf("    date      time     size                       file\n"
           " ---------- -------- --------- -------------------------------------\n");
  while (1)
    {
      len = gzread(in, &buffer, BLOCKSIZE);
      if (len < 0)
        error(gzerror(in, &err));
      /*
       * Always expect complete blocks to process
       * the tar information.
       */
      if (len != BLOCKSIZE)
        {
          action = TGZ_INVALID; /* force error exit */
          remaining = 0;        /* force I/O cleanup */
        }

      /*
       * If we have to get a tar header
       */
      if (getheader >= 1)
        {
          /*
           * if we met the end of the tar
           * or the end-of-tar block,
           * we are done
           */
          if (len == 0 || buffer.header.name[0] == 0)
            break;

          tarmode = getoct(buffer.header.mode,8);
          tartime = (time_t)getoct(buffer.header.mtime,12);
          if (tarmode == -1 || tartime == (time_t)-1)
            {
              buffer.header.name[0] = 0;
              action = TGZ_INVALID;
            }

          if (getheader == 1)
            {
              strncpy(fname,buffer.header.name,SHORTNAMESIZE);
              if (fname[SHORTNAMESIZE-1] != 0)
                  fname[SHORTNAMESIZE] = 0;
            }
          else
            {
              /*
               * The file name is longer than SHORTNAMESIZE
               */
              if (strncmp(fname,buffer.header.name,SHORTNAMESIZE-1) != 0)
                  error("bad long name");
              getheader = 1;
            }

          /*
           * Act according to the type flag
           */
          switch (buffer.header.typeflag)
            {
            case DIRTYPE:
              if (action == TGZ_LIST)
                printf(" %s     <dir> %s\n",strtime(&tartime),fname);
              if (action == TGZ_EXTRACT)
                {
                  makedir(fname);
                  push_attr(&attributes,fname,tarmode,tartime);
                }
              break;
            case REGTYPE:
            case AREGTYPE:
              remaining = getoct(buffer.header.size,12);
              if (remaining == -1)
                {
                  action = TGZ_INVALID;
                  break;
                }
              if (action == TGZ_LIST)
                printf(" %s %9d %s\n",strtime(&tartime),remaining,fname);
              else if (action == TGZ_EXTRACT)
                {
                  if (matchname(arg,argc,argv,fname))
                    {
                      outfile = fopen(fname,"wb");
                      if (outfile == NULL) {
                        /* try creating directory */
                        char *p = strrchr(fname, '/');
                        if (p != NULL) {
                          *p = '\0';
                          makedir(fname);
                          *p = '/';
                          outfile = fopen(fname,"wb");
                        }
                      }
                      if (outfile != NULL)
                        printf("Extracting %s\n",fname);
                      else
                        fprintf(stderr, "%s: Couldn't create %s",prog,fname);
                    }
                  else
                    outfile = NULL;
                }
              getheader = 0;
              break;
            case GNUTYPE_LONGLINK:
            case GNUTYPE_LONGNAME:
              remaining = getoct(buffer.header.size,12);
              if (remaining < 0 || remaining >= BLOCKSIZE)
                {
                  action = TGZ_INVALID;
                  break;
                }
              len = gzread(in, fname, BLOCKSIZE);
              if (len < 0)
                error(gzerror(in, &err));
              if (fname[BLOCKSIZE-1] != 0 || (int)strlen(fname) > remaining)
                {
                  action = TGZ_INVALID;
                  break;
                }
              getheader = 2;
              break;
            default:
              if (action == TGZ_LIST)
                printf(" %s     <---> %s\n",strtime(&tartime),fname);
              break;
            }
        }
      else
        {
          unsigned int bytes = (remaining > BLOCKSIZE) ? BLOCKSIZE : remaining;

          if (outfile != NULL)
            {
              if (fwrite(&buffer,sizeof(char),bytes,outfile) != bytes)
                {
                  fprintf(stderr,
                    "%s: Error writing %s -- skipping\n",prog,fname);
                  fclose(outfile);
                  outfile = NULL;
                  remove(fname);
                }
            }
          remaining -= bytes;
        }

      if (remaining == 0)
        {
          getheader = 1;
          if (outfile != NULL)
            {
              fclose(outfile);
              outfile = NULL;
              if (action != TGZ_INVALID)
                push_attr(&attributes,fname,tarmode,tartime);
            }
        }

      /*
       * Abandon if errors are found
       */
      if (action == TGZ_INVALID)
        {
          error("broken archive");
          break;
        }
    }

  /*
   * Restore file modes and time stamps
   */
  restore_attr(&attributes);

  if (gzclose(in) != Z_OK)
    error("failed gzclose");

  return 0;
}


/* ============================================================ */

void help(int exitval)
{
  printf("untgz version 0.2.1\n"
         "  using zlib version %s\n\n",
         zlibVersion());
  printf("Usage: untgz file.tgz            extract all files\n"
         "       untgz file.tgz fname ...  extract selected files\n"
         "       untgz -l file.tgz         list archive contents\n"
         "       untgz -h                  display this help\n");
  exit(exitval);
}


/* ============================================================ */

#if defined(WIN32) && defined(__GNUC__)
int _CRT_glob = 0;      /* disable argument globbing in MinGW */
#endif

int main(int argc,char **argv)
{
    int         action = TGZ_EXTRACT;
    int         arg = 1;
    char        *TGZfile;
    gzFile      f;

    prog = strrchr(argv[0],'\\');
    if (prog == NULL)
      {
        prog = strrchr(argv[0],'/');
        if (prog == NULL)
          {
            prog = strrchr(argv[0],':');
            if (prog == NULL)
              prog = argv[0];
            else
              prog++;
          }
        else
          prog++;
      }
    else
      prog++;

    if (argc == 1)
      help(0);

    if (strcmp(argv[arg],"-l") == 0)
      {
        action = TGZ_LIST;
        if (argc == ++arg)
          help(0);
      }
    else if (strcmp(argv[arg],"-h") == 0)
      {
        help(0);
      }

    if ((TGZfile = TGZfname(argv[arg])) == NULL)
      TGZnotfound(argv[arg]);

    ++arg;
    if ((action == TGZ_LIST) && (arg != argc))
      help(1);

/*
 *  Process the TGZ file
 */
    switch(action)
      {
      case TGZ_LIST:
      case TGZ_EXTRACT:
        f = gzopen(TGZfile,"rb");
        if (f == NULL)
          {
            fprintf(stderr,"%s: Couldn't gzopen %s\n",prog,TGZfile);
            return 1;
          }
        exit(tar(f, action, arg, argc, argv));
      break;

      default:
        error("Unknown option");
        exit(1);
      }

    return 0;
}
Added compat/zlib/contrib/vstudio/readme.txt.

















































































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Building instructions for the DLL versions of Zlib 1.3.1
========================================================

This directory contains projects that build zlib and minizip using
Microsoft Visual C++ 9.0/10.0.

You don't need to build these projects yourself. You can download the
binaries from:
  http://www.winimage.com/zLibDll

More information can be found at this site.





Build instructions for Visual Studio 2008 (32 bits or 64 bits)
--------------------------------------------------------------
- Decompress current zlib, including all contrib/* files
- Open contrib\vstudio\vc9\zlibvc.sln with Microsoft Visual C++ 2008
- Or run: vcbuild /rebuild contrib\vstudio\vc9\zlibvc.sln "Release|Win32"

Build instructions for Visual Studio 2010 (32 bits or 64 bits)
--------------------------------------------------------------
- Decompress current zlib, including all contrib/* files
- Open contrib\vstudio\vc10\zlibvc.sln with Microsoft Visual C++ 2010

Build instructions for Visual Studio 2012 (32 bits or 64 bits)
--------------------------------------------------------------
- Decompress current zlib, including all contrib/* files
- Open contrib\vstudio\vc11\zlibvc.sln with Microsoft Visual C++ 2012

Build instructions for Visual Studio 2013 (32 bits or 64 bits)
--------------------------------------------------------------
- Decompress current zlib, including all contrib/* files
- Open contrib\vstudio\vc12\zlibvc.sln with Microsoft Visual C++ 2013

Build instructions for Visual Studio 2015 (32 bits or 64 bits)
--------------------------------------------------------------
- Decompress current zlib, including all contrib/* files
- Open contrib\vstudio\vc14\zlibvc.sln with Microsoft Visual C++ 2015

Build instructions for Visual Studio 2022 (64 bits)
--------------------------------------------------------------
- Decompress current zlib, including all contrib/* files
- Open contrib\vstudio\vc143\zlibvc.sln with Microsoft Visual C++ 2022



Important
---------
- To use zlibwapi.dll in your application, you must define the
  macro ZLIB_WINAPI when compiling your application's source files.


Additional notes
----------------
- This DLL, named zlibwapi.dll, is compatible to the old zlib.dll built
  by Gilles Vollant from the zlib 1.1.x sources, and distributed at
    http://www.winimage.com/zLibDll
  It uses the WINAPI calling convention for the exported functions, and
  includes the minizip functionality. If your application needs that
  particular build of zlib.dll, you can rename zlibwapi.dll to zlib.dll.

- The new DLL was renamed because there exist several incompatible
  versions of zlib.dll on the Internet.

- There is also an official DLL build of zlib, named zlib1.dll. This one
  is exporting the functions using the CDECL convention. See the file
  win32\DLL_FAQ.txt found in this zlib distribution.

- There used to be a ZLIB_DLL macro in zlib 1.1.x, but now this symbol
  has a slightly different effect. To avoid compatibility problems, do
  not define it here.


Gilles Vollant
info@winimage.com

Visual Studio 2013, 2015, and 2022 Projects from Sean Hunt
seandhunt_7@yahoo.com
Added compat/zlib/contrib/vstudio/vc10/miniunz.vcxproj.






















































































































































































































































































































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Added compat/zlib/contrib/vstudio/vc10/miniunz.vcxproj.filters.






















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Added compat/zlib/contrib/vstudio/vc10/minizip.vcxproj.



















































































































































































































































































































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      <BasicRuntimeChecks>Default</BasicRuntimeChecks>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeader>
      </PrecompiledHeader>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <WarningLevel>Level3</WarningLevel>
      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
    </ClCompile>
    <Link>
      <AdditionalDependencies>x64\ZlibDllRelease\zlibwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>$(OutDir)testzlibdll.exe</OutputFile>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <SubSystem>Console</SubSystem>
      <OptimizeReferences>true</OptimizeReferences>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <TargetMachine>MachineX64</TargetMachine>
    </Link>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
    <Midl>
      <TargetEnvironment>Itanium</TargetEnvironment>
    </Midl>
    <ClCompile>
      <Optimization>MaxSpeed</Optimization>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <OmitFramePointers>true</OmitFramePointers>
      <AdditionalIncludeDirectories>..\..\..;..\..\minizip;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <BasicRuntimeChecks>Default</BasicRuntimeChecks>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeader>
      </PrecompiledHeader>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <WarningLevel>Level3</WarningLevel>
      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
    </ClCompile>
    <Link>
      <AdditionalDependencies>ia64\ZlibDllRelease\zlibwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>$(OutDir)testzlibdll.exe</OutputFile>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <SubSystem>Console</SubSystem>
      <OptimizeReferences>true</OptimizeReferences>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <TargetMachine>MachineIA64</TargetMachine>
    </Link>
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\testzlib\testzlib.c" />
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  <ItemGroup>
    <ProjectReference Include="zlibvc.vcxproj">
      <Project>{8fd826f8-3739-44e6-8cc8-997122e53b8d}</Project>
    </ProjectReference>
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
</Project>
Added compat/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj.filters.






















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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup>
    <Filter Include="Source Files">
      <UniqueIdentifier>{fa61a89f-93fc-4c89-b29e-36224b7592f4}</UniqueIdentifier>
      <Extensions>cpp;c;cxx;def;odl;idl;hpj;bat</Extensions>
    </Filter>
    <Filter Include="Header Files">
      <UniqueIdentifier>{d4b85da0-2ba2-4934-b57f-e2584e3848ee}</UniqueIdentifier>
      <Extensions>h;hpp;hxx;hm;inl;inc</Extensions>
    </Filter>
    <Filter Include="Resource Files">
      <UniqueIdentifier>{e573e075-00bd-4a7d-bd67-a8cc9bfc5aca}</UniqueIdentifier>
      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe</Extensions>
    </Filter>
  </ItemGroup>
  <ItemGroup>
    <ClCompile Include="..\..\testzlib\testzlib.c">
      <Filter>Source Files</Filter>
    </ClCompile>
  </ItemGroup>
</Project>
Added compat/zlib/contrib/vstudio/vc10/zlib.rc.
































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#include <windows.h>

#define IDR_VERSION1  1
IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
  FILEVERSION	 1, 3, 1, 0
  PRODUCTVERSION 1, 3, 1, 0
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
  FILETYPE	VFT_DLL
  FILESUBTYPE	0	// not used
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904E4"
    //language ID = U.S. English, char set = Windows, Multilingual

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
      VALUE "FileVersion",	"1.3.1\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlibwapi.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
      VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
      VALUE "LegalCopyright", "(C) 1995-2024 Jean-loup Gailly & Mark Adler\0"
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x0409, 1252
  END
END
Added compat/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.

































































































































































































































































































































































































































































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<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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      <Configuration>Release</Configuration>
      <Platform>x64</Platform>
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  <ImportGroup Label="ExtensionTargets">
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</Project>
Added compat/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.filters.










































































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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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</Project>
Added compat/zlib/contrib/vstudio/vc10/zlibvc.def.






























































































































































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LIBRARY
; zlib data compression and ZIP file I/O library

VERSION		1.3.1

EXPORTS
        adler32                                  @1
        compress                                 @2
        crc32                                    @3
        deflate                                  @4
        deflateCopy                              @5
        deflateEnd                               @6
        deflateInit2_                            @7
        deflateInit_                             @8
        deflateParams                            @9
        deflateReset                             @10
        deflateSetDictionary                     @11
        gzclose                                  @12
        gzdopen                                  @13
        gzerror                                  @14
        gzflush                                  @15
        gzopen                                   @16
        gzread                                   @17
        gzwrite                                  @18
        inflate                                  @19
        inflateEnd                               @20
        inflateInit2_                            @21
        inflateInit_                             @22
        inflateReset                             @23
        inflateSetDictionary                     @24
        inflateSync                              @25
        uncompress                               @26
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
        gzeof                                    @34
        gzsetparams                              @35
        zError                                   @36
        inflateSyncPoint                         @37
        get_crc_table                            @38
        compress2                                @39
        gzputs                                   @40
        gzgets                                   @41
        inflateCopy                              @42
        inflateBackInit_                         @43
        inflateBack                              @44
        inflateBackEnd                           @45
        compressBound                            @46
        deflateBound                             @47
        gzclearerr                               @48
        gzungetc                                 @49
        zlibCompileFlags                         @50
        deflatePrime                             @51
        deflatePending                           @52

        unzOpen                                  @61
        unzClose                                 @62
        unzGetGlobalInfo                         @63
        unzGetCurrentFileInfo                    @64
        unzGoToFirstFile                         @65
        unzGoToNextFile                          @66
        unzOpenCurrentFile                       @67
        unzReadCurrentFile                       @68
        unzOpenCurrentFile3                      @69
        unztell                                  @70
        unzeof                                   @71
        unzCloseCurrentFile                      @72
        unzGetGlobalComment                      @73
        unzStringFileNameCompare                 @74
        unzLocateFile                            @75
        unzGetLocalExtrafield                    @76
        unzOpen2                                 @77
        unzOpenCurrentFile2                      @78
        unzOpenCurrentFilePassword               @79

        zipOpen                                  @80
        zipOpenNewFileInZip                      @81
        zipWriteInFileInZip                      @82
        zipCloseFileInZip                        @83
        zipClose                                 @84
        zipOpenNewFileInZip2                     @86
        zipCloseFileInZipRaw                     @87
        zipOpen2                                 @88
        zipOpenNewFileInZip3                     @89

        unzGetFilePos                            @100
        unzGoToFilePos                           @101

        fill_win32_filefunc                      @110

; zlibwapi v1.2.4 added:
        fill_win32_filefunc64                   @111
        fill_win32_filefunc64A                  @112
        fill_win32_filefunc64W                  @113

        unzOpen64                               @120
        unzOpen2_64                             @121
        unzGetGlobalInfo64                      @122
        unzGetCurrentFileInfo64                 @124
        unzGetCurrentFileZStreamPos64           @125
        unztell64                               @126
        unzGetFilePos64                         @127
        unzGoToFilePos64                        @128

        zipOpen64                               @130
        zipOpen2_64                             @131
        zipOpenNewFileInZip64                   @132
        zipOpenNewFileInZip2_64                 @133
        zipOpenNewFileInZip3_64                 @134
        zipOpenNewFileInZip4_64                 @135
        zipCloseFileInZipRaw64                  @136

; zlib1 v1.2.4 added:
        adler32_combine                         @140
        crc32_combine                           @142
        deflateSetHeader                        @144
        deflateTune                             @145
        gzbuffer                                @146
        gzclose_r                               @147
        gzclose_w                               @148
        gzdirect                                @149
        gzoffset                                @150
        inflateGetHeader                        @156
        inflateMark                             @157
        inflatePrime                            @158
        inflateReset2                           @159
        inflateUndermine                        @160

; zlib1 v1.2.6 added:
        gzgetc_                                 @161
        inflateResetKeep                        @163
        deflateResetKeep                        @164

; zlib1 v1.2.7 added:
        gzopen_w                                @165

; zlib1 v1.2.8 added:
        inflateGetDictionary                    @166
        gzvprintf                               @167

; zlib1 v1.2.9 added:
        inflateCodesUsed                        @168
        inflateValidate                         @169
        uncompress2                             @170
        gzfread                                 @171
        gzfwrite                                @172
        deflateGetDictionary                    @173
        adler32_z                               @174
        crc32_z                                 @175

; zlib1 v1.2.12 added:
		crc32_combine_gen						@176
		crc32_combine_gen64						@177
		crc32_combine_op						@178
Added compat/zlib/contrib/vstudio/vc10/zlibvc.sln.







































































































































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Microsoft Visual Studio Solution File, Format Version 11.00
# Visual Studio 2010
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibvc", "zlibvc.vcxproj", "{8FD826F8-3739-44E6-8CC8-997122E53B8D}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibstat", "zlibstat.vcxproj", "{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlib", "testzlib.vcxproj", "{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlibdll", "testzlibdll.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694366A}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minizip", "minizip.vcxproj", "{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miniunz", "miniunz.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694382A}"
EndProject
Global
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		Debug|x64 = Debug|x64
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		Release|Win32 = Release|Win32
		Release|x64 = Release|x64
		ReleaseWithoutAsm|Itanium = ReleaseWithoutAsm|Itanium
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	EndGlobalSection
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		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Itanium.Build.0 = Debug|Itanium
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	EndGlobalSection
	GlobalSection(SolutionProperties) = preSolution
		HideSolutionNode = FALSE
	EndGlobalSection
EndGlobal
Added compat/zlib/contrib/vstudio/vc10/zlibvc.vcxproj.

























































































































































































































































































































































































































































































































































































































































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Added compat/zlib/contrib/vstudio/vc11/zlib.rc.
































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#include <windows.h>

#define IDR_VERSION1  1
IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
  FILEVERSION	 1, 3, 1, 0
  PRODUCTVERSION 1, 3, 1, 0
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
  FILETYPE	VFT_DLL
  FILESUBTYPE	0	// not used
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904E4"
    //language ID = U.S. English, char set = Windows, Multilingual

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
      VALUE "FileVersion",	"1.3.1\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlibwapi.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
      VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
      VALUE "LegalCopyright", "(C) 1995-2024 Jean-loup Gailly & Mark Adler\0"
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x0409, 1252
  END
END
Added compat/zlib/contrib/vstudio/vc11/zlibstat.vcxproj.








































































































































































































































































































































































































































































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      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:IA64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\..\adler32.c" />
    <ClCompile Include="..\..\..\compress.c" />
    <ClCompile Include="..\..\..\crc32.c" />
    <ClCompile Include="..\..\..\deflate.c" />
    <ClCompile Include="..\..\..\gzclose.c" />
    <ClCompile Include="..\..\..\gzlib.c" />
    <ClCompile Include="..\..\..\gzread.c" />
    <ClCompile Include="..\..\..\gzwrite.c" />
    <ClCompile Include="..\..\..\infback.c" />
    <ClCompile Include="..\..\..\inffast.c" />
    <ClCompile Include="..\..\..\inflate.c" />
    <ClCompile Include="..\..\..\inftrees.c" />
    <ClCompile Include="..\..\minizip\ioapi.c" />
    <ClCompile Include="..\..\..\trees.c" />
    <ClCompile Include="..\..\..\uncompr.c" />
    <ClCompile Include="..\..\minizip\unzip.c" />
    <ClCompile Include="..\..\minizip\zip.c" />
    <ClCompile Include="..\..\..\zutil.c" />
  </ItemGroup>
  <ItemGroup>
    <ResourceCompile Include="zlib.rc" />
  </ItemGroup>
  <ItemGroup>
    <None Include="zlibvc.def" />
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
</Project>
Added compat/zlib/contrib/vstudio/vc11/zlibvc.def.






























































































































































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LIBRARY
; zlib data compression and ZIP file I/O library

VERSION		1.3.1

EXPORTS
        adler32                                  @1
        compress                                 @2
        crc32                                    @3
        deflate                                  @4
        deflateCopy                              @5
        deflateEnd                               @6
        deflateInit2_                            @7
        deflateInit_                             @8
        deflateParams                            @9
        deflateReset                             @10
        deflateSetDictionary                     @11
        gzclose                                  @12
        gzdopen                                  @13
        gzerror                                  @14
        gzflush                                  @15
        gzopen                                   @16
        gzread                                   @17
        gzwrite                                  @18
        inflate                                  @19
        inflateEnd                               @20
        inflateInit2_                            @21
        inflateInit_                             @22
        inflateReset                             @23
        inflateSetDictionary                     @24
        inflateSync                              @25
        uncompress                               @26
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
        gzeof                                    @34
        gzsetparams                              @35
        zError                                   @36
        inflateSyncPoint                         @37
        get_crc_table                            @38
        compress2                                @39
        gzputs                                   @40
        gzgets                                   @41
        inflateCopy                              @42
        inflateBackInit_                         @43
        inflateBack                              @44
        inflateBackEnd                           @45
        compressBound                            @46
        deflateBound                             @47
        gzclearerr                               @48
        gzungetc                                 @49
        zlibCompileFlags                         @50
        deflatePrime                             @51
        deflatePending                           @52

        unzOpen                                  @61
        unzClose                                 @62
        unzGetGlobalInfo                         @63
        unzGetCurrentFileInfo                    @64
        unzGoToFirstFile                         @65
        unzGoToNextFile                          @66
        unzOpenCurrentFile                       @67
        unzReadCurrentFile                       @68
        unzOpenCurrentFile3                      @69
        unztell                                  @70
        unzeof                                   @71
        unzCloseCurrentFile                      @72
        unzGetGlobalComment                      @73
        unzStringFileNameCompare                 @74
        unzLocateFile                            @75
        unzGetLocalExtrafield                    @76
        unzOpen2                                 @77
        unzOpenCurrentFile2                      @78
        unzOpenCurrentFilePassword               @79

        zipOpen                                  @80
        zipOpenNewFileInZip                      @81
        zipWriteInFileInZip                      @82
        zipCloseFileInZip                        @83
        zipClose                                 @84
        zipOpenNewFileInZip2                     @86
        zipCloseFileInZipRaw                     @87
        zipOpen2                                 @88
        zipOpenNewFileInZip3                     @89

        unzGetFilePos                            @100
        unzGoToFilePos                           @101

        fill_win32_filefunc                      @110

; zlibwapi v1.2.4 added:
        fill_win32_filefunc64                   @111
        fill_win32_filefunc64A                  @112
        fill_win32_filefunc64W                  @113

        unzOpen64                               @120
        unzOpen2_64                             @121
        unzGetGlobalInfo64                      @122
        unzGetCurrentFileInfo64                 @124
        unzGetCurrentFileZStreamPos64           @125
        unztell64                               @126
        unzGetFilePos64                         @127
        unzGoToFilePos64                        @128

        zipOpen64                               @130
        zipOpen2_64                             @131
        zipOpenNewFileInZip64                   @132
        zipOpenNewFileInZip2_64                 @133
        zipOpenNewFileInZip3_64                 @134
        zipOpenNewFileInZip4_64                 @135
        zipCloseFileInZipRaw64                  @136

; zlib1 v1.2.4 added:
        adler32_combine                         @140
        crc32_combine                           @142
        deflateSetHeader                        @144
        deflateTune                             @145
        gzbuffer                                @146
        gzclose_r                               @147
        gzclose_w                               @148
        gzdirect                                @149
        gzoffset                                @150
        inflateGetHeader                        @156
        inflateMark                             @157
        inflatePrime                            @158
        inflateReset2                           @159
        inflateUndermine                        @160

; zlib1 v1.2.6 added:
        gzgetc_                                 @161
        inflateResetKeep                        @163
        deflateResetKeep                        @164

; zlib1 v1.2.7 added:
        gzopen_w                                @165

; zlib1 v1.2.8 added:
        inflateGetDictionary                    @166
        gzvprintf                               @167

; zlib1 v1.2.9 added:
        inflateCodesUsed                        @168
        inflateValidate                         @169
        uncompress2                             @170
        gzfread                                 @171
        gzfwrite                                @172
        deflateGetDictionary                    @173
        adler32_z                               @174
        crc32_z                                 @175

; zlib1 v1.2.12 added:
		crc32_combine_gen						@176
		crc32_combine_gen64						@177
		crc32_combine_op						@178
Added compat/zlib/contrib/vstudio/vc11/zlibvc.sln.





















































































































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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2012
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibvc", "zlibvc.vcxproj", "{8FD826F8-3739-44E6-8CC8-997122E53B8D}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibstat", "zlibstat.vcxproj", "{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlib", "testzlib.vcxproj", "{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlibdll", "testzlibdll.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694366A}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minizip", "minizip.vcxproj", "{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miniunz", "miniunz.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694382A}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Itanium = Debug|Itanium
		Debug|Win32 = Debug|Win32
		Debug|x64 = Debug|x64
		Release|Itanium = Release|Itanium
		Release|Win32 = Release|Win32
		Release|x64 = Release|x64
		ReleaseWithoutAsm|Itanium = ReleaseWithoutAsm|Itanium
		ReleaseWithoutAsm|Win32 = ReleaseWithoutAsm|Win32
		ReleaseWithoutAsm|x64 = ReleaseWithoutAsm|x64
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Itanium.ActiveCfg = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.ActiveCfg = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.Build.0 = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.ActiveCfg = Debug|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.Build.0 = Debug|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Itanium.ActiveCfg = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.ActiveCfg = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.Build.0 = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.ActiveCfg = Release|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.Build.0 = Release|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|x64.ActiveCfg = ReleaseWithoutAsm|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|x64.Build.0 = ReleaseWithoutAsm|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Itanium.ActiveCfg = Debug|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Win32.ActiveCfg = Debug|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Win32.Build.0 = Debug|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|x64.ActiveCfg = Debug|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|x64.Build.0 = Debug|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|Itanium.ActiveCfg = Release|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|Win32.ActiveCfg = Release|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|Win32.Build.0 = Release|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|x64.ActiveCfg = Release|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|x64.Build.0 = Release|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|x64.ActiveCfg = ReleaseWithoutAsm|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|x64.Build.0 = ReleaseWithoutAsm|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Itanium.ActiveCfg = Debug|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.ActiveCfg = Debug|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.Build.0 = Debug|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|x64.ActiveCfg = Debug|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|x64.Build.0 = Debug|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|Itanium.ActiveCfg = Release|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|Win32.ActiveCfg = Release|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|Win32.Build.0 = Release|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|x64.ActiveCfg = Release|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|x64.Build.0 = Release|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|x64.ActiveCfg = ReleaseWithoutAsm|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|x64.Build.0 = ReleaseWithoutAsm|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|Itanium.ActiveCfg = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|Win32.ActiveCfg = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|Win32.Build.0 = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|x64.ActiveCfg = Debug|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|x64.Build.0 = Debug|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Release|Itanium.ActiveCfg = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Release|Win32.ActiveCfg = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Release|Win32.Build.0 = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Release|x64.ActiveCfg = Release|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Release|x64.Build.0 = Release|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.ReleaseWithoutAsm|Itanium.ActiveCfg = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.ReleaseWithoutAsm|Win32.ActiveCfg = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.ReleaseWithoutAsm|x64.ActiveCfg = Release|x64
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug|Itanium.ActiveCfg = Debug|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.ActiveCfg = Debug|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.Build.0 = Debug|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug|x64.ActiveCfg = Debug|x64
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Debug|x64.Build.0 = Debug|x64
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release|Itanium.ActiveCfg = Release|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release|Win32.ActiveCfg = Release|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release|Win32.Build.0 = Release|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release|x64.ActiveCfg = Release|x64
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.Release|x64.Build.0 = Release|x64
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Itanium.ActiveCfg = Release|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Win32.ActiveCfg = Release|Win32
		{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|x64.ActiveCfg = Release|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Debug|Itanium.ActiveCfg = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Debug|Win32.ActiveCfg = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Debug|Win32.Build.0 = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Debug|x64.ActiveCfg = Debug|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Debug|x64.Build.0 = Debug|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Release|Itanium.ActiveCfg = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Release|Win32.ActiveCfg = Release|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694382A}.Release|Win32.Build.0 = Release|Win32
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Added compat/zlib/contrib/vstudio/vc12/zlib.rc.
































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#include <windows.h>

#define IDR_VERSION1  1
IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
  FILEVERSION	 1, 3, 1, 0
  PRODUCTVERSION 1, 3, 1, 0
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
  FILETYPE	VFT_DLL
  FILESUBTYPE	0	// not used
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904E4"
    //language ID = U.S. English, char set = Windows, Multilingual

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
      VALUE "FileVersion",	"1.3.1\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlibwapi.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
      VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
      VALUE "LegalCopyright", "(C) 1995-2024 Jean-loup Gailly & Mark Adler\0"
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x0409, 1252
  END
END
Added compat/zlib/contrib/vstudio/vc12/zlibstat.vcxproj.











































































































































































































































































































































































































































































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      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
    <Midl>
      <TargetEnvironment>Itanium</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:IA64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">
    <Midl>
      <TargetEnvironment>X64</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">
    <Midl>
      <TargetEnvironment>Itanium</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:IA64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\..\adler32.c" />
    <ClCompile Include="..\..\..\compress.c" />
    <ClCompile Include="..\..\..\crc32.c" />
    <ClCompile Include="..\..\..\deflate.c" />
    <ClCompile Include="..\..\..\gzclose.c" />
    <ClCompile Include="..\..\..\gzlib.c" />
    <ClCompile Include="..\..\..\gzread.c" />
    <ClCompile Include="..\..\..\gzwrite.c" />
    <ClCompile Include="..\..\..\infback.c" />
    <ClCompile Include="..\..\..\inffast.c" />
    <ClCompile Include="..\..\..\inflate.c" />
    <ClCompile Include="..\..\..\inftrees.c" />
    <ClCompile Include="..\..\minizip\ioapi.c" />
    <ClCompile Include="..\..\..\trees.c" />
    <ClCompile Include="..\..\..\uncompr.c" />
    <ClCompile Include="..\..\minizip\unzip.c" />
    <ClCompile Include="..\..\minizip\zip.c" />
    <ClCompile Include="..\..\..\zutil.c" />
  </ItemGroup>
  <ItemGroup>
    <ResourceCompile Include="zlib.rc" />
  </ItemGroup>
  <ItemGroup>
    <None Include="zlibvc.def" />
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
</Project>
Added compat/zlib/contrib/vstudio/vc12/zlibvc.def.






























































































































































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LIBRARY
; zlib data compression and ZIP file I/O library

VERSION		1.3.1

EXPORTS
        adler32                                  @1
        compress                                 @2
        crc32                                    @3
        deflate                                  @4
        deflateCopy                              @5
        deflateEnd                               @6
        deflateInit2_                            @7
        deflateInit_                             @8
        deflateParams                            @9
        deflateReset                             @10
        deflateSetDictionary                     @11
        gzclose                                  @12
        gzdopen                                  @13
        gzerror                                  @14
        gzflush                                  @15
        gzopen                                   @16
        gzread                                   @17
        gzwrite                                  @18
        inflate                                  @19
        inflateEnd                               @20
        inflateInit2_                            @21
        inflateInit_                             @22
        inflateReset                             @23
        inflateSetDictionary                     @24
        inflateSync                              @25
        uncompress                               @26
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
        gzeof                                    @34
        gzsetparams                              @35
        zError                                   @36
        inflateSyncPoint                         @37
        get_crc_table                            @38
        compress2                                @39
        gzputs                                   @40
        gzgets                                   @41
        inflateCopy                              @42
        inflateBackInit_                         @43
        inflateBack                              @44
        inflateBackEnd                           @45
        compressBound                            @46
        deflateBound                             @47
        gzclearerr                               @48
        gzungetc                                 @49
        zlibCompileFlags                         @50
        deflatePrime                             @51
        deflatePending                           @52

        unzOpen                                  @61
        unzClose                                 @62
        unzGetGlobalInfo                         @63
        unzGetCurrentFileInfo                    @64
        unzGoToFirstFile                         @65
        unzGoToNextFile                          @66
        unzOpenCurrentFile                       @67
        unzReadCurrentFile                       @68
        unzOpenCurrentFile3                      @69
        unztell                                  @70
        unzeof                                   @71
        unzCloseCurrentFile                      @72
        unzGetGlobalComment                      @73
        unzStringFileNameCompare                 @74
        unzLocateFile                            @75
        unzGetLocalExtrafield                    @76
        unzOpen2                                 @77
        unzOpenCurrentFile2                      @78
        unzOpenCurrentFilePassword               @79

        zipOpen                                  @80
        zipOpenNewFileInZip                      @81
        zipWriteInFileInZip                      @82
        zipCloseFileInZip                        @83
        zipClose                                 @84
        zipOpenNewFileInZip2                     @86
        zipCloseFileInZipRaw                     @87
        zipOpen2                                 @88
        zipOpenNewFileInZip3                     @89

        unzGetFilePos                            @100
        unzGoToFilePos                           @101

        fill_win32_filefunc                      @110

; zlibwapi v1.2.4 added:
        fill_win32_filefunc64                   @111
        fill_win32_filefunc64A                  @112
        fill_win32_filefunc64W                  @113

        unzOpen64                               @120
        unzOpen2_64                             @121
        unzGetGlobalInfo64                      @122
        unzGetCurrentFileInfo64                 @124
        unzGetCurrentFileZStreamPos64           @125
        unztell64                               @126
        unzGetFilePos64                         @127
        unzGoToFilePos64                        @128

        zipOpen64                               @130
        zipOpen2_64                             @131
        zipOpenNewFileInZip64                   @132
        zipOpenNewFileInZip2_64                 @133
        zipOpenNewFileInZip3_64                 @134
        zipOpenNewFileInZip4_64                 @135
        zipCloseFileInZipRaw64                  @136

; zlib1 v1.2.4 added:
        adler32_combine                         @140
        crc32_combine                           @142
        deflateSetHeader                        @144
        deflateTune                             @145
        gzbuffer                                @146
        gzclose_r                               @147
        gzclose_w                               @148
        gzdirect                                @149
        gzoffset                                @150
        inflateGetHeader                        @156
        inflateMark                             @157
        inflatePrime                            @158
        inflateReset2                           @159
        inflateUndermine                        @160

; zlib1 v1.2.6 added:
        gzgetc_                                 @161
        inflateResetKeep                        @163
        deflateResetKeep                        @164

; zlib1 v1.2.7 added:
        gzopen_w                                @165

; zlib1 v1.2.8 added:
        inflateGetDictionary                    @166
        gzvprintf                               @167

; zlib1 v1.2.9 added:
        inflateCodesUsed                        @168
        inflateValidate                         @169
        uncompress2                             @170
        gzfread                                 @171
        gzfwrite                                @172
        deflateGetDictionary                    @173
        adler32_z                               @174
        crc32_z                                 @175

; zlib1 v1.2.12 added:
		crc32_combine_gen						@176
		crc32_combine_gen64						@177
		crc32_combine_op						@178
Added compat/zlib/contrib/vstudio/vc12/zlibvc.sln.























































































































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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 2013
VisualStudioVersion = 12.0.40629.0
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibvc", "zlibvc.vcxproj", "{8FD826F8-3739-44E6-8CC8-997122E53B8D}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibstat", "zlibstat.vcxproj", "{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlib", "testzlib.vcxproj", "{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlibdll", "testzlibdll.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694366A}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minizip", "minizip.vcxproj", "{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miniunz", "miniunz.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694382A}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Itanium = Debug|Itanium
		Debug|Win32 = Debug|Win32
		Debug|x64 = Debug|x64
		Release|Itanium = Release|Itanium
		Release|Win32 = Release|Win32
		Release|x64 = Release|x64
		ReleaseWithoutAsm|Itanium = ReleaseWithoutAsm|Itanium
		ReleaseWithoutAsm|Win32 = ReleaseWithoutAsm|Win32
		ReleaseWithoutAsm|x64 = ReleaseWithoutAsm|x64
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Itanium.ActiveCfg = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.ActiveCfg = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.Build.0 = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.ActiveCfg = Debug|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.Build.0 = Debug|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Itanium.ActiveCfg = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.ActiveCfg = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.Build.0 = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.ActiveCfg = Release|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.Build.0 = Release|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|x64.ActiveCfg = ReleaseWithoutAsm|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|x64.Build.0 = ReleaseWithoutAsm|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Itanium.ActiveCfg = Debug|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Win32.ActiveCfg = Debug|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|Win32.Build.0 = Debug|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|x64.ActiveCfg = Debug|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Debug|x64.Build.0 = Debug|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|Itanium.ActiveCfg = Release|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|Win32.ActiveCfg = Release|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|Win32.Build.0 = Release|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|x64.ActiveCfg = Release|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.Release|x64.Build.0 = Release|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|x64.ActiveCfg = ReleaseWithoutAsm|x64
		{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}.ReleaseWithoutAsm|x64.Build.0 = ReleaseWithoutAsm|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Itanium.ActiveCfg = Debug|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.ActiveCfg = Debug|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.Build.0 = Debug|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|x64.ActiveCfg = Debug|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|x64.Build.0 = Debug|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|Itanium.ActiveCfg = Release|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|Win32.ActiveCfg = Release|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|Win32.Build.0 = Release|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|x64.ActiveCfg = Release|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Release|x64.Build.0 = Release|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|x64.ActiveCfg = ReleaseWithoutAsm|x64
		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.ReleaseWithoutAsm|x64.Build.0 = ReleaseWithoutAsm|x64
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|Itanium.ActiveCfg = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|Win32.ActiveCfg = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|Win32.Build.0 = Debug|Win32
		{C52F9E7B-498A-42BE-8DB4-85A15694366A}.Debug|x64.ActiveCfg = Debug|x64
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Added compat/zlib/contrib/vstudio/vc14/miniunz.vcxproj.




























































































































































































































































































































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Added compat/zlib/contrib/vstudio/vc14/minizip.vcxproj.

























































































































































































































































































































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Added compat/zlib/contrib/vstudio/vc14/testzlib.vcxproj.






































































































































































































































































































































































































































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Added compat/zlib/contrib/vstudio/vc14/testzlibdll.vcxproj.




























































































































































































































































































































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      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <WarningLevel>Level3</WarningLevel>
      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
    </ClCompile>
    <Link>
      <AdditionalDependencies>ia64\ZlibDllRelease\zlibwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>$(OutDir)testzlibdll.exe</OutputFile>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <SubSystem>Console</SubSystem>
      <OptimizeReferences>true</OptimizeReferences>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <TargetMachine>MachineIA64</TargetMachine>
    </Link>
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\testzlib\testzlib.c" />
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="zlibvc.vcxproj">
      <Project>{8fd826f8-3739-44e6-8cc8-997122e53b8d}</Project>
    </ProjectReference>
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
</Project>
Added compat/zlib/contrib/vstudio/vc14/zlib.rc.
































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#include <windows.h>

#define IDR_VERSION1  1
IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
  FILEVERSION	 1, 3, 1, 0
  PRODUCTVERSION 1, 3, 1, 0
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
  FILETYPE	VFT_DLL
  FILESUBTYPE	0	// not used
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904E4"
    //language ID = U.S. English, char set = Windows, Multilingual

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
      VALUE "FileVersion",	"1.3.1\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlibwapi.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
      VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
      VALUE "LegalCopyright", "(C) 1995-2024 Jean-loup Gailly & Mark Adler\0"
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x0409, 1252
  END
END
Added compat/zlib/contrib/vstudio/vc14/zlibstat.vcxproj.











































































































































































































































































































































































































































































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<?xml version="1.0" encoding="utf-8"?>
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      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:X86 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
    <Midl>
      <TargetEnvironment>X64</TargetEnvironment>
    </Midl>
    <ClCompile>
      <Optimization>Disabled</Optimization>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <DebugInformationFormat>OldStyle</DebugInformationFormat>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Itanium'">
    <Midl>
      <TargetEnvironment>Itanium</TargetEnvironment>
    </Midl>
    <ClCompile>
      <Optimization>Disabled</Optimization>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
      <DebugInformationFormat>OldStyle</DebugInformationFormat>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:IA64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
    <Midl>
      <TargetEnvironment>X64</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Itanium'">
    <Midl>
      <TargetEnvironment>Itanium</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:IA64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|x64'">
    <Midl>
      <TargetEnvironment>X64</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:AMD64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithoutAsm|Itanium'">
    <Midl>
      <TargetEnvironment>Itanium</TargetEnvironment>
    </Midl>
    <ClCompile>
      <InlineFunctionExpansion>OnlyExplicitInline</InlineFunctionExpansion>
      <AdditionalIncludeDirectories>..\..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <PreprocessorDefinitions>ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <StringPooling>true</StringPooling>
      <ExceptionHandling>
      </ExceptionHandling>
      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
      <BufferSecurityCheck>false</BufferSecurityCheck>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <PrecompiledHeaderOutputFile>$(IntDir)zlibstat.pch</PrecompiledHeaderOutputFile>
      <AssemblerListingLocation>$(IntDir)</AssemblerListingLocation>
      <ObjectFileName>$(IntDir)</ObjectFileName>
      <ProgramDataBaseFileName>$(OutDir)</ProgramDataBaseFileName>
      <WarningLevel>Level3</WarningLevel>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </ClCompile>
    <ResourceCompile>
      <Culture>0x040c</Culture>
    </ResourceCompile>
    <Lib>
      <AdditionalOptions>/MACHINE:IA64 /NODEFAULTLIB %(AdditionalOptions)</AdditionalOptions>
      <OutputFile>$(OutDir)zlibstat.lib</OutputFile>
      <SuppressStartupBanner>true</SuppressStartupBanner>
    </Lib>
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\..\adler32.c" />
    <ClCompile Include="..\..\..\compress.c" />
    <ClCompile Include="..\..\..\crc32.c" />
    <ClCompile Include="..\..\..\deflate.c" />
    <ClCompile Include="..\..\..\gzclose.c" />
    <ClCompile Include="..\..\..\gzlib.c" />
    <ClCompile Include="..\..\..\gzread.c" />
    <ClCompile Include="..\..\..\gzwrite.c" />
    <ClCompile Include="..\..\..\infback.c" />
    <ClCompile Include="..\..\..\inffast.c" />
    <ClCompile Include="..\..\..\inflate.c" />
    <ClCompile Include="..\..\..\inftrees.c" />
    <ClCompile Include="..\..\minizip\ioapi.c" />
    <ClCompile Include="..\..\..\trees.c" />
    <ClCompile Include="..\..\..\uncompr.c" />
    <ClCompile Include="..\..\minizip\unzip.c" />
    <ClCompile Include="..\..\minizip\zip.c" />
    <ClCompile Include="..\..\..\zutil.c" />
  </ItemGroup>
  <ItemGroup>
    <ResourceCompile Include="zlib.rc" />
  </ItemGroup>
  <ItemGroup>
    <None Include="zlibvc.def" />
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
</Project>
Added compat/zlib/contrib/vstudio/vc14/zlibvc.def.






























































































































































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LIBRARY
; zlib data compression and ZIP file I/O library

VERSION		1.3.1

EXPORTS
        adler32                                  @1
        compress                                 @2
        crc32                                    @3
        deflate                                  @4
        deflateCopy                              @5
        deflateEnd                               @6
        deflateInit2_                            @7
        deflateInit_                             @8
        deflateParams                            @9
        deflateReset                             @10
        deflateSetDictionary                     @11
        gzclose                                  @12
        gzdopen                                  @13
        gzerror                                  @14
        gzflush                                  @15
        gzopen                                   @16
        gzread                                   @17
        gzwrite                                  @18
        inflate                                  @19
        inflateEnd                               @20
        inflateInit2_                            @21
        inflateInit_                             @22
        inflateReset                             @23
        inflateSetDictionary                     @24
        inflateSync                              @25
        uncompress                               @26
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
        gzeof                                    @34
        gzsetparams                              @35
        zError                                   @36
        inflateSyncPoint                         @37
        get_crc_table                            @38
        compress2                                @39
        gzputs                                   @40
        gzgets                                   @41
        inflateCopy                              @42
        inflateBackInit_                         @43
        inflateBack                              @44
        inflateBackEnd                           @45
        compressBound                            @46
        deflateBound                             @47
        gzclearerr                               @48
        gzungetc                                 @49
        zlibCompileFlags                         @50
        deflatePrime                             @51
        deflatePending                           @52

        unzOpen                                  @61
        unzClose                                 @62
        unzGetGlobalInfo                         @63
        unzGetCurrentFileInfo                    @64
        unzGoToFirstFile                         @65
        unzGoToNextFile                          @66
        unzOpenCurrentFile                       @67
        unzReadCurrentFile                       @68
        unzOpenCurrentFile3                      @69
        unztell                                  @70
        unzeof                                   @71
        unzCloseCurrentFile                      @72
        unzGetGlobalComment                      @73
        unzStringFileNameCompare                 @74
        unzLocateFile                            @75
        unzGetLocalExtrafield                    @76
        unzOpen2                                 @77
        unzOpenCurrentFile2                      @78
        unzOpenCurrentFilePassword               @79

        zipOpen                                  @80
        zipOpenNewFileInZip                      @81
        zipWriteInFileInZip                      @82
        zipCloseFileInZip                        @83
        zipClose                                 @84
        zipOpenNewFileInZip2                     @86
        zipCloseFileInZipRaw                     @87
        zipOpen2                                 @88
        zipOpenNewFileInZip3                     @89

        unzGetFilePos                            @100
        unzGoToFilePos                           @101

        fill_win32_filefunc                      @110

; zlibwapi v1.2.4 added:
        fill_win32_filefunc64                   @111
        fill_win32_filefunc64A                  @112
        fill_win32_filefunc64W                  @113

        unzOpen64                               @120
        unzOpen2_64                             @121
        unzGetGlobalInfo64                      @122
        unzGetCurrentFileInfo64                 @124
        unzGetCurrentFileZStreamPos64           @125
        unztell64                               @126
        unzGetFilePos64                         @127
        unzGoToFilePos64                        @128

        zipOpen64                               @130
        zipOpen2_64                             @131
        zipOpenNewFileInZip64                   @132
        zipOpenNewFileInZip2_64                 @133
        zipOpenNewFileInZip3_64                 @134
        zipOpenNewFileInZip4_64                 @135
        zipCloseFileInZipRaw64                  @136

; zlib1 v1.2.4 added:
        adler32_combine                         @140
        crc32_combine                           @142
        deflateSetHeader                        @144
        deflateTune                             @145
        gzbuffer                                @146
        gzclose_r                               @147
        gzclose_w                               @148
        gzdirect                                @149
        gzoffset                                @150
        inflateGetHeader                        @156
        inflateMark                             @157
        inflatePrime                            @158
        inflateReset2                           @159
        inflateUndermine                        @160

; zlib1 v1.2.6 added:
        gzgetc_                                 @161
        inflateResetKeep                        @163
        deflateResetKeep                        @164

; zlib1 v1.2.7 added:
        gzopen_w                                @165

; zlib1 v1.2.8 added:
        inflateGetDictionary                    @166
        gzvprintf                               @167

; zlib1 v1.2.9 added:
        inflateCodesUsed                        @168
        inflateValidate                         @169
        uncompress2                             @170
        gzfread                                 @171
        gzfwrite                                @172
        deflateGetDictionary                    @173
        adler32_z                               @174
        crc32_z                                 @175

; zlib1 v1.2.12 added:
		crc32_combine_gen						@176
		crc32_combine_gen64						@177
		crc32_combine_op						@178
Added compat/zlib/contrib/vstudio/vc14/zlibvc.sln.























































































































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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 14
VisualStudioVersion = 14.0.25420.1
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibvc", "zlibvc.vcxproj", "{8FD826F8-3739-44E6-8CC8-997122E53B8D}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibstat", "zlibstat.vcxproj", "{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlib", "testzlib.vcxproj", "{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlibdll", "testzlibdll.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694366A}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minizip", "minizip.vcxproj", "{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miniunz", "miniunz.vcxproj", "{C52F9E7B-498A-42BE-8DB4-85A15694382A}"
EndProject
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Itanium = Debug|Itanium
		Debug|Win32 = Debug|Win32
		Debug|x64 = Debug|x64
		Release|Itanium = Release|Itanium
		Release|Win32 = Release|Win32
		Release|x64 = Release|x64
		ReleaseWithoutAsm|Itanium = ReleaseWithoutAsm|Itanium
		ReleaseWithoutAsm|Win32 = ReleaseWithoutAsm|Win32
		ReleaseWithoutAsm|x64 = ReleaseWithoutAsm|x64
	EndGlobalSection
	GlobalSection(ProjectConfigurationPlatforms) = postSolution
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Itanium.ActiveCfg = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.ActiveCfg = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|Win32.Build.0 = Debug|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.ActiveCfg = Debug|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Debug|x64.Build.0 = Debug|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Itanium.ActiveCfg = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.ActiveCfg = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|Win32.Build.0 = Release|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.ActiveCfg = Release|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.Release|x64.Build.0 = Release|x64
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Itanium.ActiveCfg = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.ActiveCfg = ReleaseWithoutAsm|Win32
		{8FD826F8-3739-44E6-8CC8-997122E53B8D}.ReleaseWithoutAsm|Win32.Build.0 = ReleaseWithoutAsm|Win32
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Added compat/zlib/contrib/vstudio/vc9/miniunz.vcproj.





















































































































































































































































































































































































































































































































































































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				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x64\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/miniunz.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/miniunz.pdb"
				SubSystem="1"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|Itanium"
			OutputDirectory="ia64\MiniUnzip$(ConfigurationName)"
			IntermediateDirectory="ia64\MiniUnzip$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="ia64\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/miniunz.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/miniunz.pdb"
				SubSystem="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|x64"
			OutputDirectory="x64\MiniUnzip$(ConfigurationName)"
			IntermediateDirectory="x64\MiniUnzip$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x64\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/miniunz.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Itanium"
			OutputDirectory="ia64\MiniUnzip$(ConfigurationName)"
			IntermediateDirectory="ia64\MiniUnzip$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="ia64\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/miniunz.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
	</Configurations>
	<References>
	</References>
	<Files>
		<Filter
			Name="Source Files"
			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
			>
			<File
				RelativePath="..\..\minizip\miniunz.c"
				>
			</File>
		</Filter>
		<Filter
			Name="Header Files"
			Filter="h;hpp;hxx;hm;inl;inc"
			>
		</Filter>
		<Filter
			Name="Resource Files"
			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
			>
		</Filter>
	</Files>
	<Globals>
	</Globals>
</VisualStudioProject>
Added compat/zlib/contrib/vstudio/vc9/minizip.vcproj.


















































































































































































































































































































































































































































































































































































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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
	ProjectType="Visual C++"
	Version="9.00"
	Name="minizip"
	ProjectGUID="{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"
	Keyword="Win32Proj"
	TargetFrameworkVersion="131072"
	>
	<Platforms>
		<Platform
			Name="Win32"
		/>
		<Platform
			Name="x64"
		/>
		<Platform
			Name="Itanium"
		/>
	</Platforms>
	<ToolFiles>
	</ToolFiles>
	<Configurations>
		<Configuration
			Name="Debug|Win32"
			OutputDirectory="x86\MiniZip$(ConfigurationName)"
			IntermediateDirectory="x86\MiniZip$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="1"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="4"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x86\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/minizip.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/minizip.pdb"
				SubSystem="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Win32"
			OutputDirectory="x86\MiniZip$(ConfigurationName)"
			IntermediateDirectory="x86\MiniZip$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x86\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/minizip.exe"
				LinkIncremental="1"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|x64"
			OutputDirectory="x64\$(ConfigurationName)"
			IntermediateDirectory="x64\$(ConfigurationName)"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x64\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/minizip.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/minizip.pdb"
				SubSystem="1"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|Itanium"
			OutputDirectory="ia64\$(ConfigurationName)"
			IntermediateDirectory="ia64\$(ConfigurationName)"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="ia64\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/minizip.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/minizip.pdb"
				SubSystem="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|x64"
			OutputDirectory="x64\$(ConfigurationName)"
			IntermediateDirectory="x64\$(ConfigurationName)"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x64\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/minizip.exe"
				LinkIncremental="1"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Itanium"
			OutputDirectory="ia64\$(ConfigurationName)"
			IntermediateDirectory="ia64\$(ConfigurationName)"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="ia64\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/minizip.exe"
				LinkIncremental="1"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
	</Configurations>
	<References>
	</References>
	<Files>
		<Filter
			Name="Source Files"
			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
			>
			<File
				RelativePath="..\..\minizip\minizip.c"
				>
			</File>
		</Filter>
		<Filter
			Name="Header Files"
			Filter="h;hpp;hxx;hm;inl;inc"
			>
		</Filter>
		<Filter
			Name="Resource Files"
			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
			>
		</Filter>
	</Files>
	<Globals>
	</Globals>
</VisualStudioProject>
Added compat/zlib/contrib/vstudio/vc9/testzlib.vcproj.




























































































































































































































































































































































































































































































































































































































































































































































































































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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
	ProjectType="Visual C++"
	Version="9,00"
	Name="testzlib"
	ProjectGUID="{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"
	RootNamespace="testzlib"
	Keyword="Win32Proj"
	TargetFrameworkVersion="131072"
	>
	<Platforms>
		<Platform
			Name="Win32"
		/>
		<Platform
			Name="x64"
		/>
		<Platform
			Name="Itanium"
		/>
	</Platforms>
	<ToolFiles>
	</ToolFiles>
	<Configurations>
		<Configuration
			Name="Debug|Win32"
			OutputDirectory="x86\TestZlib$(ConfigurationName)"
			IntermediateDirectory="x86\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="1"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerOutput="4"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="4"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/testzlib.pdb"
				SubSystem="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|x64"
			OutputDirectory="x64\TestZlib$(ConfigurationName)"
			IntermediateDirectory="x64\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				AssemblerListingLocation="$(IntDir)\"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				GenerateManifest="false"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|Itanium"
			OutputDirectory="ia64\TestZlib$(ConfigurationName)"
			IntermediateDirectory="ia64\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_DEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerOutput="4"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/testzlib.pdb"
				SubSystem="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="ReleaseWithoutAsm|Win32"
			OutputDirectory="x86\TestZlib$(ConfigurationName)"
			IntermediateDirectory="x86\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			CharacterSet="2"
			WholeProgramOptimization="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="ReleaseWithoutAsm|x64"
			OutputDirectory="x64\TestZlib$(ConfigurationName)"
			IntermediateDirectory="x64\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			WholeProgramOptimization="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				AssemblerListingLocation="$(IntDir)\"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies=""
				GenerateManifest="false"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="ReleaseWithoutAsm|Itanium"
			OutputDirectory="ia64\TestZlib$(ConfigurationName)"
			IntermediateDirectory="ia64\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			CharacterSet="2"
			WholeProgramOptimization="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Win32"
			OutputDirectory="x86\TestZlib$(ConfigurationName)"
			IntermediateDirectory="x86\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			CharacterSet="2"
			WholeProgramOptimization="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|x64"
			OutputDirectory="x64\TestZlib$(ConfigurationName)"
			IntermediateDirectory="x64\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			WholeProgramOptimization="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				BasicRuntimeChecks="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				AssemblerListingLocation="$(IntDir)\"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				GenerateManifest="false"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Itanium"
			OutputDirectory="ia64\TestZlib$(ConfigurationName)"
			IntermediateDirectory="ia64\TestZlib$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			CharacterSet="2"
			WholeProgramOptimization="1"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;NDEBUG;_CONSOLE;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
	</Configurations>
	<References>
	</References>
	<Files>
		<Filter
			Name="Source Files"
			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
			>
			<File
				RelativePath="..\..\..\adler32.c"
				>
			</File>
			<File
				RelativePath="..\..\..\compress.c"
				>
			</File>
			<File
				RelativePath="..\..\..\crc32.c"
				>
			</File>
			<File
				RelativePath="..\..\..\deflate.c"
				>
			</File>
			<File
				RelativePath="..\..\..\infback.c"
				>
			</File>
			<File
				RelativePath="..\..\..\inffast.c"
				>
			</File>
			<File
				RelativePath="..\..\..\inflate.c"
				>
			</File>
			<File
				RelativePath="..\..\..\inftrees.c"
				>
			</File>
			<File
				RelativePath="..\..\testzlib\testzlib.c"
				>
			</File>
			<File
				RelativePath="..\..\..\trees.c"
				>
			</File>
			<File
				RelativePath="..\..\..\uncompr.c"
				>
			</File>
			<File
				RelativePath="..\..\..\zutil.c"
				>
			</File>
		</Filter>
		<Filter
			Name="Header Files"
			Filter="h;hpp;hxx;hm;inl;inc"
			>
		</Filter>
		<Filter
			Name="Resource Files"
			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
			>
		</Filter>
	</Files>
	<Globals>
	</Globals>
</VisualStudioProject>
Added compat/zlib/contrib/vstudio/vc9/testzlibdll.vcproj.





















































































































































































































































































































































































































































































































































































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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
	ProjectType="Visual C++"
	Version="9.00"
	Name="TestZlibDll"
	ProjectGUID="{C52F9E7B-498A-42BE-8DB4-85A15694366A}"
	Keyword="Win32Proj"
	TargetFrameworkVersion="131072"
	>
	<Platforms>
		<Platform
			Name="Win32"
		/>
		<Platform
			Name="x64"
		/>
		<Platform
			Name="Itanium"
		/>
	</Platforms>
	<ToolFiles>
	</ToolFiles>
	<Configurations>
		<Configuration
			Name="Debug|Win32"
			OutputDirectory="x86\TestZlibDll$(ConfigurationName)"
			IntermediateDirectory="x86\TestZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="1"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="4"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x86\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/testzlib.pdb"
				SubSystem="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Win32"
			OutputDirectory="x86\TestZlibDll$(ConfigurationName)"
			IntermediateDirectory="x86\TestZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x86\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|x64"
			OutputDirectory="x64\TestZlibDll$(ConfigurationName)"
			IntermediateDirectory="x64\TestZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x64\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/testzlib.pdb"
				SubSystem="1"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|Itanium"
			OutputDirectory="ia64\TestZlibDll$(ConfigurationName)"
			IntermediateDirectory="ia64\TestZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;_DEBUG;_CONSOLE;WIN64"
				MinimalRebuild="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="ia64\ZlibDllDebug\zlibwapi.lib"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="2"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/testzlib.pdb"
				SubSystem="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|x64"
			OutputDirectory="x64\TestZlibDll$(ConfigurationName)"
			IntermediateDirectory="x64\TestZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="x64\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Itanium"
			OutputDirectory="ia64\TestZlibDll$(ConfigurationName)"
			IntermediateDirectory="ia64\TestZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="1"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="1"
				OmitFramePointers="true"
				AdditionalIncludeDirectories="..\..\..;..\..\minizip"
				PreprocessorDefinitions="_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;ZLIB_WINAPI;NDEBUG;_CONSOLE;WIN64"
				StringPooling="true"
				BasicRuntimeChecks="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				UsePrecompiledHeader="0"
				AssemblerListingLocation="$(IntDir)\"
				WarningLevel="3"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="ia64\ZlibDllRelease\zlibwapi.lib"
				OutputFile="$(OutDir)/testzlib.exe"
				LinkIncremental="1"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				SubSystem="1"
				OptimizeReferences="2"
				EnableCOMDATFolding="2"
				OptimizeForWindows98="1"
				TargetMachine="5"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCWebDeploymentTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
	</Configurations>
	<References>
	</References>
	<Files>
		<Filter
			Name="Source Files"
			Filter="cpp;c;cxx;def;odl;idl;hpj;bat"
			>
			<File
				RelativePath="..\..\testzlib\testzlib.c"
				>
			</File>
		</Filter>
		<Filter
			Name="Header Files"
			Filter="h;hpp;hxx;hm;inl;inc"
			>
		</Filter>
		<Filter
			Name="Resource Files"
			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
			>
		</Filter>
	</Files>
	<Globals>
	</Globals>
</VisualStudioProject>
Added compat/zlib/contrib/vstudio/vc9/zlib.rc.
































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#include <windows.h>

#define IDR_VERSION1  1
IDR_VERSION1	VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
  FILEVERSION	 1, 3, 1, 0
  PRODUCTVERSION 1, 3, 1, 0
  FILEFLAGSMASK	VS_FFI_FILEFLAGSMASK
  FILEFLAGS	0
  FILEOS	VOS_DOS_WINDOWS32
  FILETYPE	VFT_DLL
  FILESUBTYPE	0	// not used
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904E4"
    //language ID = U.S. English, char set = Windows, Multilingual

    BEGIN
      VALUE "FileDescription", "zlib data compression and ZIP file I/O library\0"
      VALUE "FileVersion",	"1.3.1\0"
      VALUE "InternalName",	"zlib\0"
      VALUE "OriginalFilename",	"zlibwapi.dll\0"
      VALUE "ProductName",	"ZLib.DLL\0"
      VALUE "Comments","DLL support by Alessandro Iacopetti & Gilles Vollant\0"
      VALUE "LegalCopyright", "(C) 1995-2024 Jean-loup Gailly & Mark Adler\0"
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x0409, 1252
  END
END
Added compat/zlib/contrib/vstudio/vc9/zlibstat.vcproj.













































































































































































































































































































































































































































































































































































































































































































































































































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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
	ProjectType="Visual C++"
	Version="9,00"
	Name="zlibstat"
	ProjectGUID="{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"
	TargetFrameworkVersion="131072"
	>
	<Platforms>
		<Platform
			Name="Win32"
		/>
		<Platform
			Name="x64"
		/>
		<Platform
			Name="Itanium"
		/>
	</Platforms>
	<ToolFiles>
	</ToolFiles>
	<Configurations>
		<Configuration
			Name="Debug|Win32"
			OutputDirectory="x86\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="x86\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				ExceptionHandling="0"
				RuntimeLibrary="1"
				BufferSecurityCheck="false"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="1"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:X86 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|x64"
			OutputDirectory="x64\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="x64\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				ExceptionHandling="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="1"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:AMD64 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|Itanium"
			OutputDirectory="ia64\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="ia64\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				ExceptionHandling="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
				Detect64BitPortabilityProblems="true"
				DebugInformationFormat="1"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:IA64 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Win32"
			OutputDirectory="x86\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="x86\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				InlineFunctionExpansion="1"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				StringPooling="true"
				ExceptionHandling="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:X86 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|x64"
			OutputDirectory="x64\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="x64\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				InlineFunctionExpansion="1"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				StringPooling="true"
				ExceptionHandling="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:AMD64 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Itanium"
			OutputDirectory="ia64\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="ia64\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				InlineFunctionExpansion="1"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				StringPooling="true"
				ExceptionHandling="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:IA64 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="ReleaseWithoutAsm|Win32"
			OutputDirectory="x86\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="x86\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
			/>
			<Tool
				Name="VCCLCompilerTool"
				InlineFunctionExpansion="1"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS"
				StringPooling="true"
				ExceptionHandling="0"
				RuntimeLibrary="0"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:X86 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="ReleaseWithoutAsm|x64"
			OutputDirectory="x64\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="x64\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="3"
			/>
			<Tool
				Name="VCCLCompilerTool"
				InlineFunctionExpansion="1"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				StringPooling="true"
				ExceptionHandling="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:AMD64 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="ReleaseWithoutAsm|Itanium"
			OutputDirectory="ia64\ZlibStat$(ConfigurationName)"
			IntermediateDirectory="ia64\ZlibStat$(ConfigurationName)\Tmp"
			ConfigurationType="4"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				TargetEnvironment="2"
			/>
			<Tool
				Name="VCCLCompilerTool"
				InlineFunctionExpansion="1"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="ZLIB_WINAPI;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;WIN64"
				StringPooling="true"
				ExceptionHandling="0"
				RuntimeLibrary="2"
				BufferSecurityCheck="false"
				EnableFunctionLevelLinking="true"
				PrecompiledHeaderFile="$(IntDir)/zlibstat.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				WarningLevel="3"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLibrarianTool"
				AdditionalOptions="/MACHINE:IA64 /NODEFAULTLIB"
				OutputFile="$(OutDir)\zlibstat.lib"
				SuppressStartupBanner="true"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
	</Configurations>
	<References>
	</References>
	<Files>
		<Filter
			Name="Source Files"
			>
			<File
				RelativePath="..\..\..\adler32.c"
				>
			</File>
			<File
				RelativePath="..\..\..\compress.c"
				>
			</File>
			<File
				RelativePath="..\..\..\crc32.c"
				>
			</File>
			<File
				RelativePath="..\..\..\deflate.c"
				>
			</File>
			<File
				RelativePath="..\..\..\gzclose.c"
				>
			</File>
			<File
				RelativePath="..\..\..\gzguts.h"
				>
			</File>
			<File
				RelativePath="..\..\..\gzlib.c"
				>
			</File>
			<File
				RelativePath="..\..\..\gzread.c"
				>
			</File>
			<File
				RelativePath="..\..\..\gzwrite.c"
				>
			</File>
			<File
				RelativePath="..\..\..\infback.c"
				>
			</File>
			<File
				RelativePath="..\..\..\inffast.c"
				>
			</File>
			<File
				RelativePath="..\..\..\inflate.c"
				>
			</File>
			<File
				RelativePath="..\..\..\inftrees.c"
				>
			</File>
			<File
				RelativePath="..\..\minizip\ioapi.c"
				>
			</File>
			<File
				RelativePath="..\..\..\trees.c"
				>
			</File>
			<File
				RelativePath="..\..\..\uncompr.c"
				>
			</File>
			<File
				RelativePath="..\..\minizip\unzip.c"
				>
			</File>
			<File
				RelativePath="..\..\minizip\zip.c"
				>
			</File>
			<File
				RelativePath=".\zlib.rc"
				>
			</File>
			<File
				RelativePath=".\zlibvc.def"
				>
			</File>
			<File
				RelativePath="..\..\..\zutil.c"
				>
			</File>
		</Filter>
	</Files>
	<Globals>
	</Globals>
</VisualStudioProject>
Added compat/zlib/contrib/vstudio/vc9/zlibvc.def.






























































































































































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LIBRARY
; zlib data compression and ZIP file I/O library

VERSION		1.3.1

EXPORTS
        adler32                                  @1
        compress                                 @2
        crc32                                    @3
        deflate                                  @4
        deflateCopy                              @5
        deflateEnd                               @6
        deflateInit2_                            @7
        deflateInit_                             @8
        deflateParams                            @9
        deflateReset                             @10
        deflateSetDictionary                     @11
        gzclose                                  @12
        gzdopen                                  @13
        gzerror                                  @14
        gzflush                                  @15
        gzopen                                   @16
        gzread                                   @17
        gzwrite                                  @18
        inflate                                  @19
        inflateEnd                               @20
        inflateInit2_                            @21
        inflateInit_                             @22
        inflateReset                             @23
        inflateSetDictionary                     @24
        inflateSync                              @25
        uncompress                               @26
        zlibVersion                              @27
        gzprintf                                 @28
        gzputc                                   @29
        gzgetc                                   @30
        gzseek                                   @31
        gzrewind                                 @32
        gztell                                   @33
        gzeof                                    @34
        gzsetparams                              @35
        zError                                   @36
        inflateSyncPoint                         @37
        get_crc_table                            @38
        compress2                                @39
        gzputs                                   @40
        gzgets                                   @41
        inflateCopy                              @42
        inflateBackInit_                         @43
        inflateBack                              @44
        inflateBackEnd                           @45
        compressBound                            @46
        deflateBound                             @47
        gzclearerr                               @48
        gzungetc                                 @49
        zlibCompileFlags                         @50
        deflatePrime                             @51
        deflatePending                           @52

        unzOpen                                  @61
        unzClose                                 @62
        unzGetGlobalInfo                         @63
        unzGetCurrentFileInfo                    @64
        unzGoToFirstFile                         @65
        unzGoToNextFile                          @66
        unzOpenCurrentFile                       @67
        unzReadCurrentFile                       @68
        unzOpenCurrentFile3                      @69
        unztell                                  @70
        unzeof                                   @71
        unzCloseCurrentFile                      @72
        unzGetGlobalComment                      @73
        unzStringFileNameCompare                 @74
        unzLocateFile                            @75
        unzGetLocalExtrafield                    @76
        unzOpen2                                 @77
        unzOpenCurrentFile2                      @78
        unzOpenCurrentFilePassword               @79

        zipOpen                                  @80
        zipOpenNewFileInZip                      @81
        zipWriteInFileInZip                      @82
        zipCloseFileInZip                        @83
        zipClose                                 @84
        zipOpenNewFileInZip2                     @86
        zipCloseFileInZipRaw                     @87
        zipOpen2                                 @88
        zipOpenNewFileInZip3                     @89

        unzGetFilePos                            @100
        unzGoToFilePos                           @101

        fill_win32_filefunc                      @110

; zlibwapi v1.2.4 added:
        fill_win32_filefunc64                   @111
        fill_win32_filefunc64A                  @112
        fill_win32_filefunc64W                  @113

        unzOpen64                               @120
        unzOpen2_64                             @121
        unzGetGlobalInfo64                      @122
        unzGetCurrentFileInfo64                 @124
        unzGetCurrentFileZStreamPos64           @125
        unztell64                               @126
        unzGetFilePos64                         @127
        unzGoToFilePos64                        @128

        zipOpen64                               @130
        zipOpen2_64                             @131
        zipOpenNewFileInZip64                   @132
        zipOpenNewFileInZip2_64                 @133
        zipOpenNewFileInZip3_64                 @134
        zipOpenNewFileInZip4_64                 @135
        zipCloseFileInZipRaw64                  @136

; zlib1 v1.2.4 added:
        adler32_combine                         @140
        crc32_combine                           @142
        deflateSetHeader                        @144
        deflateTune                             @145
        gzbuffer                                @146
        gzclose_r                               @147
        gzclose_w                               @148
        gzdirect                                @149
        gzoffset                                @150
        inflateGetHeader                        @156
        inflateMark                             @157
        inflatePrime                            @158
        inflateReset2                           @159
        inflateUndermine                        @160

; zlib1 v1.2.6 added:
        gzgetc_                                 @161
        inflateResetKeep                        @163
        deflateResetKeep                        @164

; zlib1 v1.2.7 added:
        gzopen_w                                @165

; zlib1 v1.2.8 added:
        inflateGetDictionary                    @166
        gzvprintf                               @167

; zlib1 v1.2.9 added:
        inflateCodesUsed                        @168
        inflateValidate                         @169
        uncompress2                             @170
        gzfread                                 @171
        gzfwrite                                @172
        deflateGetDictionary                    @173
        adler32_z                               @174
        crc32_z                                 @175

; zlib1 v1.2.12 added:
		crc32_combine_gen						@176
		crc32_combine_gen64						@177
		crc32_combine_op						@178
Added compat/zlib/contrib/vstudio/vc9/zlibvc.sln.
















































































































































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Microsoft Visual Studio Solution File, Format Version 10.00
# Visual Studio 2008
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibvc", "zlibvc.vcproj", "{8FD826F8-3739-44E6-8CC8-997122E53B8D}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlibstat", "zlibstat.vcproj", "{745DEC58-EBB3-47A9-A9B8-4C6627C01BF8}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "testzlib", "testzlib.vcproj", "{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "TestZlibDll", "testzlibdll.vcproj", "{C52F9E7B-498A-42BE-8DB4-85A15694366A}"
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	EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "minizip", "minizip.vcproj", "{48CDD9DC-E09F-4135-9C0C-4FE50C3C654B}"
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		{8FD826F8-3739-44E6-8CC8-997122E53B8D} = {8FD826F8-3739-44E6-8CC8-997122E53B8D}
	EndProjectSection
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "miniunz", "miniunz.vcproj", "{C52F9E7B-498A-42BE-8DB4-85A15694382A}"
	ProjectSection(ProjectDependencies) = postProject
		{8FD826F8-3739-44E6-8CC8-997122E53B8D} = {8FD826F8-3739-44E6-8CC8-997122E53B8D}
	EndProjectSection
EndProject
Global
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		Release|x64 = Release|x64
		ReleaseWithoutAsm|Itanium = ReleaseWithoutAsm|Itanium
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		ReleaseWithoutAsm|x64 = ReleaseWithoutAsm|x64
	EndGlobalSection
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		{AA6666AA-E09F-4135-9C0C-4FE50C3C654B}.Debug|Win32.Build.0 = Debug|Win32
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	EndGlobalSection
	GlobalSection(SolutionProperties) = preSolution
		HideSolutionNode = FALSE
	EndGlobalSection
EndGlobal
Added compat/zlib/contrib/vstudio/vc9/zlibvc.vcproj.












































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
	ProjectType="Visual C++"
	Version="9,00"
	Name="zlibvc"
	ProjectGUID="{8FD826F8-3739-44E6-8CC8-997122E53B8D}"
	RootNamespace="zlibvc"
	TargetFrameworkVersion="131072"
	>
	<Platforms>
		<Platform
			Name="Win32"
		/>
		<Platform
			Name="x64"
		/>
		<Platform
			Name="Itanium"
		/>
	</Platforms>
	<ToolFiles>
	</ToolFiles>
	<Configurations>
		<Configuration
			Name="Debug|Win32"
			OutputDirectory="x86\ZlibDll$(ConfigurationName)"
			IntermediateDirectory="x86\ZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="2"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				PreprocessorDefinitions="_DEBUG"
				MkTypLibCompatible="true"
				SuppressStartupBanner="true"
				TargetEnvironment="1"
				TypeLibraryName="$(OutDir)/zlibvc.tlb"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI"
				ExceptionHandling="0"
				RuntimeLibrary="1"
				BufferSecurityCheck="false"
				PrecompiledHeaderFile="$(IntDir)/zlibvc.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				BrowseInformation="0"
				WarningLevel="3"
				SuppressStartupBanner="true"
				DebugInformationFormat="4"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				PreprocessorDefinitions="_DEBUG"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalOptions="/MACHINE:I386"
				OutputFile="$(OutDir)\zlibwapi.dll"
				LinkIncremental="2"
				SuppressStartupBanner="true"
				GenerateManifest="false"
				ModuleDefinitionFile=".\zlibvc.def"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/zlibwapi.pdb"
				GenerateMapFile="true"
				MapFileName="$(OutDir)/zlibwapi.map"
				SubSystem="2"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				ImportLibrary="$(OutDir)/zlibwapi.lib"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|x64"
			OutputDirectory="x64\ZlibDll$(ConfigurationName)"
			IntermediateDirectory="x64\ZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="2"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				PreprocessorDefinitions="_DEBUG"
				MkTypLibCompatible="true"
				SuppressStartupBanner="true"
				TargetEnvironment="3"
				TypeLibraryName="$(OutDir)/zlibvc.tlb"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
				ExceptionHandling="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				PrecompiledHeaderFile="$(IntDir)/zlibvc.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				BrowseInformation="0"
				WarningLevel="3"
				SuppressStartupBanner="true"
				DebugInformationFormat="3"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				PreprocessorDefinitions="_DEBUG"
				Culture="1036"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				OutputFile="$(OutDir)\zlibwapi.dll"
				LinkIncremental="2"
				SuppressStartupBanner="true"
				GenerateManifest="false"
				ModuleDefinitionFile=".\zlibvc.def"
				GenerateDebugInformation="true"
				ProgramDatabaseFile="$(OutDir)/zlibwapi.pdb"
				GenerateMapFile="true"
				MapFileName="$(OutDir)/zlibwapi.map"
				SubSystem="2"
				ImportLibrary="$(OutDir)/zlibwapi.lib"
				TargetMachine="17"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
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				Name="VCBscMakeTool"
			/>
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				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Debug|Itanium"
			OutputDirectory="ia64\ZlibDll$(ConfigurationName)"
			IntermediateDirectory="ia64\ZlibDll$(ConfigurationName)\Tmp"
			ConfigurationType="2"
			InheritedPropertySheets="UpgradeFromVC70.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				PreprocessorDefinitions="_DEBUG"
				MkTypLibCompatible="true"
				SuppressStartupBanner="true"
				TargetEnvironment="2"
				TypeLibraryName="$(OutDir)/zlibvc.tlb"
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				AdditionalIncludeDirectories="..\..\.."
				PreprocessorDefinitions="WIN32;_CRT_NONSTDC_NO_DEPRECATE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_WARNINGS;ZLIB_WINAPI;WIN64"
				ExceptionHandling="0"
				RuntimeLibrary="3"
				BufferSecurityCheck="false"
				PrecompiledHeaderFile="$(IntDir)/zlibvc.pch"
				AssemblerListingLocation="$(IntDir)\"
				ObjectFile="$(IntDir)\"
				ProgramDataBaseFileName="$(OutDir)\"
				BrowseInformation="0"
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		</Filter>
		<Filter
			Name="Resource Files"
			Filter="ico;cur;bmp;dlg;rc2;rct;bin;cnt;rtf;gif;jpg;jpeg;jpe"
			>
		</Filter>
	</Files>
	<Globals>
	</Globals>
</VisualStudioProject>
Added compat/zlib/crc32.c.

























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* crc32.c -- compute the CRC-32 of a data stream
 * Copyright (C) 1995-2022 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 *
 * This interleaved implementation of a CRC makes use of pipelined multiple
 * arithmetic-logic units, commonly found in modern CPU cores. It is due to
 * Kadatch and Jenkins (2010). See doc/crc-doc.1.0.pdf in this distribution.
 */

/* @(#) $Id$ */

/*
  Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
  protection on the static variables used to control the first-use generation
  of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
  first call get_crc_table() to initialize the tables before allowing more than
  one thread to use crc32().

  MAKECRCH can be #defined to write out crc32.h. A main() routine is also
  produced, so that this one source file can be compiled to an executable.
 */

#ifdef MAKECRCH
#  include <stdio.h>
#  ifndef DYNAMIC_CRC_TABLE
#    define DYNAMIC_CRC_TABLE
#  endif /* !DYNAMIC_CRC_TABLE */
#endif /* MAKECRCH */

#include "zutil.h"      /* for Z_U4, Z_U8, z_crc_t, and FAR definitions */

 /*
  A CRC of a message is computed on N braids of words in the message, where
  each word consists of W bytes (4 or 8). If N is 3, for example, then three
  running sparse CRCs are calculated respectively on each braid, at these
  indices in the array of words: 0, 3, 6, ..., 1, 4, 7, ..., and 2, 5, 8, ...
  This is done starting at a word boundary, and continues until as many blocks
  of N * W bytes as are available have been processed. The results are combined
  into a single CRC at the end. For this code, N must be in the range 1..6 and
  W must be 4 or 8. The upper limit on N can be increased if desired by adding
  more #if blocks, extending the patterns apparent in the code. In addition,
  crc32.h would need to be regenerated, if the maximum N value is increased.

  N and W are chosen empirically by benchmarking the execution time on a given
  processor. The choices for N and W below were based on testing on Intel Kaby
  Lake i7, AMD Ryzen 7, ARM Cortex-A57, Sparc64-VII, PowerPC POWER9, and MIPS64
  Octeon II processors. The Intel, AMD, and ARM processors were all fastest
  with N=5, W=8. The Sparc, PowerPC, and MIPS64 were all fastest at N=5, W=4.
  They were all tested with either gcc or clang, all using the -O3 optimization
  level. Your mileage may vary.
 */

/* Define N */
#ifdef Z_TESTN
#  define N Z_TESTN
#else
#  define N 5
#endif
#if N < 1 || N > 6
#  error N must be in 1..6
#endif

/*
  z_crc_t must be at least 32 bits. z_word_t must be at least as long as
  z_crc_t. It is assumed here that z_word_t is either 32 bits or 64 bits, and
  that bytes are eight bits.
 */

/*
  Define W and the associated z_word_t type. If W is not defined, then a
  braided calculation is not used, and the associated tables and code are not
  compiled.
 */
#ifdef Z_TESTW
#  if Z_TESTW-1 != -1
#    define W Z_TESTW
#  endif
#else
#  ifdef MAKECRCH
#    define W 8         /* required for MAKECRCH */
#  else
#    if defined(__x86_64__) || defined(__aarch64__)
#      define W 8
#    else
#      define W 4
#    endif
#  endif
#endif
#ifdef W
#  if W == 8 && defined(Z_U8)
     typedef Z_U8 z_word_t;
#  elif defined(Z_U4)
#    undef W
#    define W 4
     typedef Z_U4 z_word_t;
#  else
#    undef W
#  endif
#endif

/* If available, use the ARM processor CRC32 instruction. */
#if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
#  define ARMCRC32
#endif

#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
/*
  Swap the bytes in a z_word_t to convert between little and big endian. Any
  self-respecting compiler will optimize this to a single machine byte-swap
  instruction, if one is available. This assumes that word_t is either 32 bits
  or 64 bits.
 */
local z_word_t byte_swap(z_word_t word) {
#  if W == 8
    return
        (word & 0xff00000000000000) >> 56 |
        (word & 0xff000000000000) >> 40 |
        (word & 0xff0000000000) >> 24 |
        (word & 0xff00000000) >> 8 |
        (word & 0xff000000) << 8 |
        (word & 0xff0000) << 24 |
        (word & 0xff00) << 40 |
        (word & 0xff) << 56;
#  else   /* W == 4 */
    return
        (word & 0xff000000) >> 24 |
        (word & 0xff0000) >> 8 |
        (word & 0xff00) << 8 |
        (word & 0xff) << 24;
#  endif
}
#endif

#ifdef DYNAMIC_CRC_TABLE
/* =========================================================================
 * Table of powers of x for combining CRC-32s, filled in by make_crc_table()
 * below.
 */
   local z_crc_t FAR x2n_table[32];
#else
/* =========================================================================
 * Tables for byte-wise and braided CRC-32 calculations, and a table of powers
 * of x for combining CRC-32s, all made by make_crc_table().
 */
#  include "crc32.h"
#endif

/* CRC polynomial. */
#define POLY 0xedb88320         /* p(x) reflected, with x^32 implied */

/*
  Return a(x) multiplied by b(x) modulo p(x), where p(x) is the CRC polynomial,
  reflected. For speed, this requires that a not be zero.
 */
local z_crc_t multmodp(z_crc_t a, z_crc_t b) {
    z_crc_t m, p;

    m = (z_crc_t)1 << 31;
    p = 0;
    for (;;) {
        if (a & m) {
            p ^= b;
            if ((a & (m - 1)) == 0)
                break;
        }
        m >>= 1;
        b = b & 1 ? (b >> 1) ^ POLY : b >> 1;
    }
    return p;
}

/*
  Return x^(n * 2^k) modulo p(x). Requires that x2n_table[] has been
  initialized.
 */
local z_crc_t x2nmodp(z_off64_t n, unsigned k) {
    z_crc_t p;

    p = (z_crc_t)1 << 31;           /* x^0 == 1 */
    while (n) {
        if (n & 1)
            p = multmodp(x2n_table[k & 31], p);
        n >>= 1;
        k++;
    }
    return p;
}

#ifdef DYNAMIC_CRC_TABLE
/* =========================================================================
 * Build the tables for byte-wise and braided CRC-32 calculations, and a table
 * of powers of x for combining CRC-32s.
 */
local z_crc_t FAR crc_table[256];
#ifdef W
   local z_word_t FAR crc_big_table[256];
   local z_crc_t FAR crc_braid_table[W][256];
   local z_word_t FAR crc_braid_big_table[W][256];
   local void braid(z_crc_t [][256], z_word_t [][256], int, int);
#endif
#ifdef MAKECRCH
   local void write_table(FILE *, const z_crc_t FAR *, int);
   local void write_table32hi(FILE *, const z_word_t FAR *, int);
   local void write_table64(FILE *, const z_word_t FAR *, int);
#endif /* MAKECRCH */

/*
  Define a once() function depending on the availability of atomics. If this is
  compiled with DYNAMIC_CRC_TABLE defined, and if CRCs will be computed in
  multiple threads, and if atomics are not available, then get_crc_table() must
  be called to initialize the tables and must return before any threads are
  allowed to compute or combine CRCs.
 */

/* Definition of once functionality. */
typedef struct once_s once_t;

/* Check for the availability of atomics. */
#if defined(__STDC__) && __STDC_VERSION__ >= 201112L && \
    !defined(__STDC_NO_ATOMICS__)

#include <stdatomic.h>

/* Structure for once(), which must be initialized with ONCE_INIT. */
struct once_s {
    atomic_flag begun;
    atomic_int done;
};
#define ONCE_INIT {ATOMIC_FLAG_INIT, 0}

/*
  Run the provided init() function exactly once, even if multiple threads
  invoke once() at the same time. The state must be a once_t initialized with
  ONCE_INIT.
 */
local void once(once_t *state, void (*init)(void)) {
    if (!atomic_load(&state->done)) {
        if (atomic_flag_test_and_set(&state->begun))
            while (!atomic_load(&state->done))
                ;
        else {
            init();
            atomic_store(&state->done, 1);
        }
    }
}

#else   /* no atomics */

/* Structure for once(), which must be initialized with ONCE_INIT. */
struct once_s {
    volatile int begun;
    volatile int done;
};
#define ONCE_INIT {0, 0}

/* Test and set. Alas, not atomic, but tries to minimize the period of
   vulnerability. */
local int test_and_set(int volatile *flag) {
    int was;

    was = *flag;
    *flag = 1;
    return was;
}

/* Run the provided init() function once. This is not thread-safe. */
local void once(once_t *state, void (*init)(void)) {
    if (!state->done) {
        if (test_and_set(&state->begun))
            while (!state->done)
                ;
        else {
            init();
            state->done = 1;
        }
    }
}

#endif

/* State for once(). */
local once_t made = ONCE_INIT;

/*
  Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
  x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.

  Polynomials over GF(2) are represented in binary, one bit per coefficient,
  with the lowest powers in the most significant bit. Then adding polynomials
  is just exclusive-or, and multiplying a polynomial by x is a right shift by
  one. If we call the above polynomial p, and represent a byte as the
  polynomial q, also with the lowest power in the most significant bit (so the
  byte 0xb1 is the polynomial x^7+x^3+x^2+1), then the CRC is (q*x^32) mod p,
  where a mod b means the remainder after dividing a by b.

  This calculation is done using the shift-register method of multiplying and
  taking the remainder. The register is initialized to zero, and for each
  incoming bit, x^32 is added mod p to the register if the bit is a one (where
  x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by x
  (which is shifting right by one and adding x^32 mod p if the bit shifted out
  is a one). We start with the highest power (least significant bit) of q and
  repeat for all eight bits of q.

  The table is simply the CRC of all possible eight bit values. This is all the
  information needed to generate CRCs on data a byte at a time for all
  combinations of CRC register values and incoming bytes.
 */

local void make_crc_table(void) {
    unsigned i, j, n;
    z_crc_t p;

    /* initialize the CRC of bytes tables */
    for (i = 0; i < 256; i++) {
        p = i;
        for (j = 0; j < 8; j++)
            p = p & 1 ? (p >> 1) ^ POLY : p >> 1;
        crc_table[i] = p;
#ifdef W
        crc_big_table[i] = byte_swap(p);
#endif
    }

    /* initialize the x^2^n mod p(x) table */
    p = (z_crc_t)1 << 30;         /* x^1 */
    x2n_table[0] = p;
    for (n = 1; n < 32; n++)
        x2n_table[n] = p = multmodp(p, p);

#ifdef W
    /* initialize the braiding tables -- needs x2n_table[] */
    braid(crc_braid_table, crc_braid_big_table, N, W);
#endif

#ifdef MAKECRCH
    {
        /*
          The crc32.h header file contains tables for both 32-bit and 64-bit
          z_word_t's, and so requires a 64-bit type be available. In that case,
          z_word_t must be defined to be 64-bits. This code then also generates
          and writes out the tables for the case that z_word_t is 32 bits.
         */
#if !defined(W) || W != 8
#  error Need a 64-bit integer type in order to generate crc32.h.
#endif
        FILE *out;
        int k, n;
        z_crc_t ltl[8][256];
        z_word_t big[8][256];

        out = fopen("crc32.h", "w");
        if (out == NULL) return;

        /* write out little-endian CRC table to crc32.h */
        fprintf(out,
            "/* crc32.h -- tables for rapid CRC calculation\n"
            " * Generated automatically by crc32.c\n */\n"
            "\n"
            "local const z_crc_t FAR crc_table[] = {\n"
            "    ");
        write_table(out, crc_table, 256);
        fprintf(out,
            "};\n");

        /* write out big-endian CRC table for 64-bit z_word_t to crc32.h */
        fprintf(out,
            "\n"
            "#ifdef W\n"
            "\n"
            "#if W == 8\n"
            "\n"
            "local const z_word_t FAR crc_big_table[] = {\n"
            "    ");
        write_table64(out, crc_big_table, 256);
        fprintf(out,
            "};\n");

        /* write out big-endian CRC table for 32-bit z_word_t to crc32.h */
        fprintf(out,
            "\n"
            "#else /* W == 4 */\n"
            "\n"
            "local const z_word_t FAR crc_big_table[] = {\n"
            "    ");
        write_table32hi(out, crc_big_table, 256);
        fprintf(out,
            "};\n"
            "\n"
            "#endif\n");

        /* write out braid tables for each value of N */
        for (n = 1; n <= 6; n++) {
            fprintf(out,
            "\n"
            "#if N == %d\n", n);

            /* compute braid tables for this N and 64-bit word_t */
            braid(ltl, big, n, 8);

            /* write out braid tables for 64-bit z_word_t to crc32.h */
            fprintf(out,
            "\n"
            "#if W == 8\n"
            "\n"
            "local const z_crc_t FAR crc_braid_table[][256] = {\n");
            for (k = 0; k < 8; k++) {
                fprintf(out, "   {");
                write_table(out, ltl[k], 256);
                fprintf(out, "}%s", k < 7 ? ",\n" : "");
            }
            fprintf(out,
            "};\n"
            "\n"
            "local const z_word_t FAR crc_braid_big_table[][256] = {\n");
            for (k = 0; k < 8; k++) {
                fprintf(out, "   {");
                write_table64(out, big[k], 256);
                fprintf(out, "}%s", k < 7 ? ",\n" : "");
            }
            fprintf(out,
            "};\n");

            /* compute braid tables for this N and 32-bit word_t */
            braid(ltl, big, n, 4);

            /* write out braid tables for 32-bit z_word_t to crc32.h */
            fprintf(out,
            "\n"
            "#else /* W == 4 */\n"
            "\n"
            "local const z_crc_t FAR crc_braid_table[][256] = {\n");
            for (k = 0; k < 4; k++) {
                fprintf(out, "   {");
                write_table(out, ltl[k], 256);
                fprintf(out, "}%s", k < 3 ? ",\n" : "");
            }
            fprintf(out,
            "};\n"
            "\n"
            "local const z_word_t FAR crc_braid_big_table[][256] = {\n");
            for (k = 0; k < 4; k++) {
                fprintf(out, "   {");
                write_table32hi(out, big[k], 256);
                fprintf(out, "}%s", k < 3 ? ",\n" : "");
            }
            fprintf(out,
            "};\n"
            "\n"
            "#endif\n"
            "\n"
            "#endif\n");
        }
        fprintf(out,
            "\n"
            "#endif\n");

        /* write out zeros operator table to crc32.h */
        fprintf(out,
            "\n"
            "local const z_crc_t FAR x2n_table[] = {\n"
            "    ");
        write_table(out, x2n_table, 32);
        fprintf(out,
            "};\n");
        fclose(out);
    }
#endif /* MAKECRCH */
}

#ifdef MAKECRCH

/*
   Write the 32-bit values in table[0..k-1] to out, five per line in
   hexadecimal separated by commas.
 */
local void write_table(FILE *out, const z_crc_t FAR *table, int k) {
    int n;

    for (n = 0; n < k; n++)
        fprintf(out, "%s0x%08lx%s", n == 0 || n % 5 ? "" : "    ",
                (unsigned long)(table[n]),
                n == k - 1 ? "" : (n % 5 == 4 ? ",\n" : ", "));
}

/*
   Write the high 32-bits of each value in table[0..k-1] to out, five per line
   in hexadecimal separated by commas.
 */
local void write_table32hi(FILE *out, const z_word_t FAR *table, int k) {
    int n;

    for (n = 0; n < k; n++)
        fprintf(out, "%s0x%08lx%s", n == 0 || n % 5 ? "" : "    ",
                (unsigned long)(table[n] >> 32),
                n == k - 1 ? "" : (n % 5 == 4 ? ",\n" : ", "));
}

/*
  Write the 64-bit values in table[0..k-1] to out, three per line in
  hexadecimal separated by commas. This assumes that if there is a 64-bit
  type, then there is also a long long integer type, and it is at least 64
  bits. If not, then the type cast and format string can be adjusted
  accordingly.
 */
local void write_table64(FILE *out, const z_word_t FAR *table, int k) {
    int n;

    for (n = 0; n < k; n++)
        fprintf(out, "%s0x%016llx%s", n == 0 || n % 3 ? "" : "    ",
                (unsigned long long)(table[n]),
                n == k - 1 ? "" : (n % 3 == 2 ? ",\n" : ", "));
}

/* Actually do the deed. */
int main(void) {
    make_crc_table();
    return 0;
}

#endif /* MAKECRCH */

#ifdef W
/*
  Generate the little and big-endian braid tables for the given n and z_word_t
  size w. Each array must have room for w blocks of 256 elements.
 */
local void braid(z_crc_t ltl[][256], z_word_t big[][256], int n, int w) {
    int k;
    z_crc_t i, p, q;
    for (k = 0; k < w; k++) {
        p = x2nmodp((n * w + 3 - k) << 3, 0);
        ltl[k][0] = 0;
        big[w - 1 - k][0] = 0;
        for (i = 1; i < 256; i++) {
            ltl[k][i] = q = multmodp(i << 24, p);
            big[w - 1 - k][i] = byte_swap(q);
        }
    }
}
#endif

#endif /* DYNAMIC_CRC_TABLE */

/* =========================================================================
 * This function can be used by asm versions of crc32(), and to force the
 * generation of the CRC tables in a threaded application.
 */
const z_crc_t FAR * ZEXPORT get_crc_table(void) {
#ifdef DYNAMIC_CRC_TABLE
    once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */
    return (const z_crc_t FAR *)crc_table;
}

/* =========================================================================
 * Use ARM machine instructions if available. This will compute the CRC about
 * ten times faster than the braided calculation. This code does not check for
 * the presence of the CRC instruction at run time. __ARM_FEATURE_CRC32 will
 * only be defined if the compilation specifies an ARM processor architecture
 * that has the instructions. For example, compiling with -march=armv8.1-a or
 * -march=armv8-a+crc, or -march=native if the compile machine has the crc32
 * instructions.
 */
#ifdef ARMCRC32

/*
   Constants empirically determined to maximize speed. These values are from
   measurements on a Cortex-A57. Your mileage may vary.
 */
#define Z_BATCH 3990                /* number of words in a batch */
#define Z_BATCH_ZEROS 0xa10d3d0c    /* computed from Z_BATCH = 3990 */
#define Z_BATCH_MIN 800             /* fewest words in a final batch */

unsigned long ZEXPORT crc32_z(unsigned long crc, const unsigned char FAR *buf,
                              z_size_t len) {
    z_crc_t val;
    z_word_t crc1, crc2;
    const z_word_t *word;
    z_word_t val0, val1, val2;
    z_size_t last, last2, i;
    z_size_t num;

    /* Return initial CRC, if requested. */
    if (buf == Z_NULL) return 0;

#ifdef DYNAMIC_CRC_TABLE
    once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */

    /* Pre-condition the CRC */
    crc = (~crc) & 0xffffffff;

    /* Compute the CRC up to a word boundary. */
    while (len && ((z_size_t)buf & 7) != 0) {
        len--;
        val = *buf++;
        __asm__ volatile("crc32b %w0, %w0, %w1" : "+r"(crc) : "r"(val));
    }

    /* Prepare to compute the CRC on full 64-bit words word[0..num-1]. */
    word = (z_word_t const *)buf;
    num = len >> 3;
    len &= 7;

    /* Do three interleaved CRCs to realize the throughput of one crc32x
       instruction per cycle. Each CRC is calculated on Z_BATCH words. The
       three CRCs are combined into a single CRC after each set of batches. */
    while (num >= 3 * Z_BATCH) {
        crc1 = 0;
        crc2 = 0;
        for (i = 0; i < Z_BATCH; i++) {
            val0 = word[i];
            val1 = word[i + Z_BATCH];
            val2 = word[i + 2 * Z_BATCH];
            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc) : "r"(val0));
            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc1) : "r"(val1));
            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc2) : "r"(val2));
        }
        word += 3 * Z_BATCH;
        num -= 3 * Z_BATCH;
        crc = multmodp(Z_BATCH_ZEROS, crc) ^ crc1;
        crc = multmodp(Z_BATCH_ZEROS, crc) ^ crc2;
    }

    /* Do one last smaller batch with the remaining words, if there are enough
       to pay for the combination of CRCs. */
    last = num / 3;
    if (last >= Z_BATCH_MIN) {
        last2 = last << 1;
        crc1 = 0;
        crc2 = 0;
        for (i = 0; i < last; i++) {
            val0 = word[i];
            val1 = word[i + last];
            val2 = word[i + last2];
            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc) : "r"(val0));
            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc1) : "r"(val1));
            __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc2) : "r"(val2));
        }
        word += 3 * last;
        num -= 3 * last;
        val = x2nmodp(last, 6);
        crc = multmodp(val, crc) ^ crc1;
        crc = multmodp(val, crc) ^ crc2;
    }

    /* Compute the CRC on any remaining words. */
    for (i = 0; i < num; i++) {
        val0 = word[i];
        __asm__ volatile("crc32x %w0, %w0, %x1" : "+r"(crc) : "r"(val0));
    }
    word += num;

    /* Complete the CRC on any remaining bytes. */
    buf = (const unsigned char FAR *)word;
    while (len) {
        len--;
        val = *buf++;
        __asm__ volatile("crc32b %w0, %w0, %w1" : "+r"(crc) : "r"(val));
    }

    /* Return the CRC, post-conditioned. */
    return crc ^ 0xffffffff;
}

#else

#ifdef W

/*
  Return the CRC of the W bytes in the word_t data, taking the
  least-significant byte of the word as the first byte of data, without any pre
  or post conditioning. This is used to combine the CRCs of each braid.
 */
local z_crc_t crc_word(z_word_t data) {
    int k;
    for (k = 0; k < W; k++)
        data = (data >> 8) ^ crc_table[data & 0xff];
    return (z_crc_t)data;
}

local z_word_t crc_word_big(z_word_t data) {
    int k;
    for (k = 0; k < W; k++)
        data = (data << 8) ^
            crc_big_table[(data >> ((W - 1) << 3)) & 0xff];
    return data;
}

#endif

/* ========================================================================= */
unsigned long ZEXPORT crc32_z(unsigned long crc, const unsigned char FAR *buf,
                              z_size_t len) {
    /* Return initial CRC, if requested. */
    if (buf == Z_NULL) return 0;

#ifdef DYNAMIC_CRC_TABLE
    once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */

    /* Pre-condition the CRC */
    crc = (~crc) & 0xffffffff;

#ifdef W

    /* If provided enough bytes, do a braided CRC calculation. */
    if (len >= N * W + W - 1) {
        z_size_t blks;
        z_word_t const *words;
        unsigned endian;
        int k;

        /* Compute the CRC up to a z_word_t boundary. */
        while (len && ((z_size_t)buf & (W - 1)) != 0) {
            len--;
            crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        }

        /* Compute the CRC on as many N z_word_t blocks as are available. */
        blks = len / (N * W);
        len -= blks * N * W;
        words = (z_word_t const *)buf;

        /* Do endian check at execution time instead of compile time, since ARM
           processors can change the endianness at execution time. If the
           compiler knows what the endianness will be, it can optimize out the
           check and the unused branch. */
        endian = 1;
        if (*(unsigned char *)&endian) {
            /* Little endian. */

            z_crc_t crc0;
            z_word_t word0;
#if N > 1
            z_crc_t crc1;
            z_word_t word1;
#if N > 2
            z_crc_t crc2;
            z_word_t word2;
#if N > 3
            z_crc_t crc3;
            z_word_t word3;
#if N > 4
            z_crc_t crc4;
            z_word_t word4;
#if N > 5
            z_crc_t crc5;
            z_word_t word5;
#endif
#endif
#endif
#endif
#endif

            /* Initialize the CRC for each braid. */
            crc0 = crc;
#if N > 1
            crc1 = 0;
#if N > 2
            crc2 = 0;
#if N > 3
            crc3 = 0;
#if N > 4
            crc4 = 0;
#if N > 5
            crc5 = 0;
#endif
#endif
#endif
#endif
#endif

            /*
              Process the first blks-1 blocks, computing the CRCs on each braid
              independently.
             */
            while (--blks) {
                /* Load the word for each braid into registers. */
                word0 = crc0 ^ words[0];
#if N > 1
                word1 = crc1 ^ words[1];
#if N > 2
                word2 = crc2 ^ words[2];
#if N > 3
                word3 = crc3 ^ words[3];
#if N > 4
                word4 = crc4 ^ words[4];
#if N > 5
                word5 = crc5 ^ words[5];
#endif
#endif
#endif
#endif
#endif
                words += N;

                /* Compute and update the CRC for each word. The loop should
                   get unrolled. */
                crc0 = crc_braid_table[0][word0 & 0xff];
#if N > 1
                crc1 = crc_braid_table[0][word1 & 0xff];
#if N > 2
                crc2 = crc_braid_table[0][word2 & 0xff];
#if N > 3
                crc3 = crc_braid_table[0][word3 & 0xff];
#if N > 4
                crc4 = crc_braid_table[0][word4 & 0xff];
#if N > 5
                crc5 = crc_braid_table[0][word5 & 0xff];
#endif
#endif
#endif
#endif
#endif
                for (k = 1; k < W; k++) {
                    crc0 ^= crc_braid_table[k][(word0 >> (k << 3)) & 0xff];
#if N > 1
                    crc1 ^= crc_braid_table[k][(word1 >> (k << 3)) & 0xff];
#if N > 2
                    crc2 ^= crc_braid_table[k][(word2 >> (k << 3)) & 0xff];
#if N > 3
                    crc3 ^= crc_braid_table[k][(word3 >> (k << 3)) & 0xff];
#if N > 4
                    crc4 ^= crc_braid_table[k][(word4 >> (k << 3)) & 0xff];
#if N > 5
                    crc5 ^= crc_braid_table[k][(word5 >> (k << 3)) & 0xff];
#endif
#endif
#endif
#endif
#endif
                }
            }

            /*
              Process the last block, combining the CRCs of the N braids at the
              same time.
             */
            crc = crc_word(crc0 ^ words[0]);
#if N > 1
            crc = crc_word(crc1 ^ words[1] ^ crc);
#if N > 2
            crc = crc_word(crc2 ^ words[2] ^ crc);
#if N > 3
            crc = crc_word(crc3 ^ words[3] ^ crc);
#if N > 4
            crc = crc_word(crc4 ^ words[4] ^ crc);
#if N > 5
            crc = crc_word(crc5 ^ words[5] ^ crc);
#endif
#endif
#endif
#endif
#endif
            words += N;
        }
        else {
            /* Big endian. */

            z_word_t crc0, word0, comb;
#if N > 1
            z_word_t crc1, word1;
#if N > 2
            z_word_t crc2, word2;
#if N > 3
            z_word_t crc3, word3;
#if N > 4
            z_word_t crc4, word4;
#if N > 5
            z_word_t crc5, word5;
#endif
#endif
#endif
#endif
#endif

            /* Initialize the CRC for each braid. */
            crc0 = byte_swap(crc);
#if N > 1
            crc1 = 0;
#if N > 2
            crc2 = 0;
#if N > 3
            crc3 = 0;
#if N > 4
            crc4 = 0;
#if N > 5
            crc5 = 0;
#endif
#endif
#endif
#endif
#endif

            /*
              Process the first blks-1 blocks, computing the CRCs on each braid
              independently.
             */
            while (--blks) {
                /* Load the word for each braid into registers. */
                word0 = crc0 ^ words[0];
#if N > 1
                word1 = crc1 ^ words[1];
#if N > 2
                word2 = crc2 ^ words[2];
#if N > 3
                word3 = crc3 ^ words[3];
#if N > 4
                word4 = crc4 ^ words[4];
#if N > 5
                word5 = crc5 ^ words[5];
#endif
#endif
#endif
#endif
#endif
                words += N;

                /* Compute and update the CRC for each word. The loop should
                   get unrolled. */
                crc0 = crc_braid_big_table[0][word0 & 0xff];
#if N > 1
                crc1 = crc_braid_big_table[0][word1 & 0xff];
#if N > 2
                crc2 = crc_braid_big_table[0][word2 & 0xff];
#if N > 3
                crc3 = crc_braid_big_table[0][word3 & 0xff];
#if N > 4
                crc4 = crc_braid_big_table[0][word4 & 0xff];
#if N > 5
                crc5 = crc_braid_big_table[0][word5 & 0xff];
#endif
#endif
#endif
#endif
#endif
                for (k = 1; k < W; k++) {
                    crc0 ^= crc_braid_big_table[k][(word0 >> (k << 3)) & 0xff];
#if N > 1
                    crc1 ^= crc_braid_big_table[k][(word1 >> (k << 3)) & 0xff];
#if N > 2
                    crc2 ^= crc_braid_big_table[k][(word2 >> (k << 3)) & 0xff];
#if N > 3
                    crc3 ^= crc_braid_big_table[k][(word3 >> (k << 3)) & 0xff];
#if N > 4
                    crc4 ^= crc_braid_big_table[k][(word4 >> (k << 3)) & 0xff];
#if N > 5
                    crc5 ^= crc_braid_big_table[k][(word5 >> (k << 3)) & 0xff];
#endif
#endif
#endif
#endif
#endif
                }
            }

            /*
              Process the last block, combining the CRCs of the N braids at the
              same time.
             */
            comb = crc_word_big(crc0 ^ words[0]);
#if N > 1
            comb = crc_word_big(crc1 ^ words[1] ^ comb);
#if N > 2
            comb = crc_word_big(crc2 ^ words[2] ^ comb);
#if N > 3
            comb = crc_word_big(crc3 ^ words[3] ^ comb);
#if N > 4
            comb = crc_word_big(crc4 ^ words[4] ^ comb);
#if N > 5
            comb = crc_word_big(crc5 ^ words[5] ^ comb);
#endif
#endif
#endif
#endif
#endif
            words += N;
            crc = byte_swap(comb);
        }

        /*
          Update the pointer to the remaining bytes to process.
         */
        buf = (unsigned char const *)words;
    }

#endif /* W */

    /* Complete the computation of the CRC on any remaining bytes. */
    while (len >= 8) {
        len -= 8;
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
    }
    while (len) {
        len--;
        crc = (crc >> 8) ^ crc_table[(crc ^ *buf++) & 0xff];
    }

    /* Return the CRC, post-conditioned. */
    return crc ^ 0xffffffff;
}

#endif

/* ========================================================================= */
unsigned long ZEXPORT crc32(unsigned long crc, const unsigned char FAR *buf,
                            uInt len) {
    return crc32_z(crc, buf, len);
}

/* ========================================================================= */
uLong ZEXPORT crc32_combine64(uLong crc1, uLong crc2, z_off64_t len2) {
#ifdef DYNAMIC_CRC_TABLE
    once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */
    return multmodp(x2nmodp(len2, 3), crc1) ^ (crc2 & 0xffffffff);
}

/* ========================================================================= */
uLong ZEXPORT crc32_combine(uLong crc1, uLong crc2, z_off_t len2) {
    return crc32_combine64(crc1, crc2, (z_off64_t)len2);
}

/* ========================================================================= */
uLong ZEXPORT crc32_combine_gen64(z_off64_t len2) {
#ifdef DYNAMIC_CRC_TABLE
    once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */
    return x2nmodp(len2, 3);
}

/* ========================================================================= */
uLong ZEXPORT crc32_combine_gen(z_off_t len2) {
    return crc32_combine_gen64((z_off64_t)len2);
}

/* ========================================================================= */
uLong ZEXPORT crc32_combine_op(uLong crc1, uLong crc2, uLong op) {
    return multmodp(op, crc1) ^ (crc2 & 0xffffffff);
}
Added compat/zlib/crc32.h.



















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* crc32.h -- tables for rapid CRC calculation
 * Generated automatically by crc32.c
 */

local const z_crc_t FAR crc_table[] = {
    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
    0x2d02ef8d};

#ifdef W

#if W == 8

local const z_word_t FAR crc_big_table[] = {
    0x0000000000000000, 0x9630077700000000, 0x2c610eee00000000,
    0xba51099900000000, 0x19c46d0700000000, 0x8ff46a7000000000,
    0x35a563e900000000, 0xa395649e00000000, 0x3288db0e00000000,
    0xa4b8dc7900000000, 0x1ee9d5e000000000, 0x88d9d29700000000,
    0x2b4cb60900000000, 0xbd7cb17e00000000, 0x072db8e700000000,
    0x911dbf9000000000, 0x6410b71d00000000, 0xf220b06a00000000,
    0x4871b9f300000000, 0xde41be8400000000, 0x7dd4da1a00000000,
    0xebe4dd6d00000000, 0x51b5d4f400000000, 0xc785d38300000000,
    0x56986c1300000000, 0xc0a86b6400000000, 0x7af962fd00000000,
    0xecc9658a00000000, 0x4f5c011400000000, 0xd96c066300000000,
    0x633d0ffa00000000, 0xf50d088d00000000, 0xc8206e3b00000000,
    0x5e10694c00000000, 0xe44160d500000000, 0x727167a200000000,
    0xd1e4033c00000000, 0x47d4044b00000000, 0xfd850dd200000000,
    0x6bb50aa500000000, 0xfaa8b53500000000, 0x6c98b24200000000,
    0xd6c9bbdb00000000, 0x40f9bcac00000000, 0xe36cd83200000000,
    0x755cdf4500000000, 0xcf0dd6dc00000000, 0x593dd1ab00000000,
    0xac30d92600000000, 0x3a00de5100000000, 0x8051d7c800000000,
    0x1661d0bf00000000, 0xb5f4b42100000000, 0x23c4b35600000000,
    0x9995bacf00000000, 0x0fa5bdb800000000, 0x9eb8022800000000,
    0x0888055f00000000, 0xb2d90cc600000000, 0x24e90bb100000000,
    0x877c6f2f00000000, 0x114c685800000000, 0xab1d61c100000000,
    0x3d2d66b600000000, 0x9041dc7600000000, 0x0671db0100000000,
    0xbc20d29800000000, 0x2a10d5ef00000000, 0x8985b17100000000,
    0x1fb5b60600000000, 0xa5e4bf9f00000000, 0x33d4b8e800000000,
    0xa2c9077800000000, 0x34f9000f00000000, 0x8ea8099600000000,
    0x18980ee100000000, 0xbb0d6a7f00000000, 0x2d3d6d0800000000,
    0x976c649100000000, 0x015c63e600000000, 0xf4516b6b00000000,
    0x62616c1c00000000, 0xd830658500000000, 0x4e0062f200000000,
    0xed95066c00000000, 0x7ba5011b00000000, 0xc1f4088200000000,
    0x57c40ff500000000, 0xc6d9b06500000000, 0x50e9b71200000000,
    0xeab8be8b00000000, 0x7c88b9fc00000000, 0xdf1ddd6200000000,
    0x492dda1500000000, 0xf37cd38c00000000, 0x654cd4fb00000000,
    0x5861b24d00000000, 0xce51b53a00000000, 0x7400bca300000000,
    0xe230bbd400000000, 0x41a5df4a00000000, 0xd795d83d00000000,
    0x6dc4d1a400000000, 0xfbf4d6d300000000, 0x6ae9694300000000,
    0xfcd96e3400000000, 0x468867ad00000000, 0xd0b860da00000000,
    0x732d044400000000, 0xe51d033300000000, 0x5f4c0aaa00000000,
    0xc97c0ddd00000000, 0x3c71055000000000, 0xaa41022700000000,
    0x10100bbe00000000, 0x86200cc900000000, 0x25b5685700000000,
    0xb3856f2000000000, 0x09d466b900000000, 0x9fe461ce00000000,
    0x0ef9de5e00000000, 0x98c9d92900000000, 0x2298d0b000000000,
    0xb4a8d7c700000000, 0x173db35900000000, 0x810db42e00000000,
    0x3b5cbdb700000000, 0xad6cbac000000000, 0x2083b8ed00000000,
    0xb6b3bf9a00000000, 0x0ce2b60300000000, 0x9ad2b17400000000,
    0x3947d5ea00000000, 0xaf77d29d00000000, 0x1526db0400000000,
    0x8316dc7300000000, 0x120b63e300000000, 0x843b649400000000,
    0x3e6a6d0d00000000, 0xa85a6a7a00000000, 0x0bcf0ee400000000,
    0x9dff099300000000, 0x27ae000a00000000, 0xb19e077d00000000,
    0x44930ff000000000, 0xd2a3088700000000, 0x68f2011e00000000,
    0xfec2066900000000, 0x5d5762f700000000, 0xcb67658000000000,
    0x71366c1900000000, 0xe7066b6e00000000, 0x761bd4fe00000000,
    0xe02bd38900000000, 0x5a7ada1000000000, 0xcc4add6700000000,
    0x6fdfb9f900000000, 0xf9efbe8e00000000, 0x43beb71700000000,
    0xd58eb06000000000, 0xe8a3d6d600000000, 0x7e93d1a100000000,
    0xc4c2d83800000000, 0x52f2df4f00000000, 0xf167bbd100000000,
    0x6757bca600000000, 0xdd06b53f00000000, 0x4b36b24800000000,
    0xda2b0dd800000000, 0x4c1b0aaf00000000, 0xf64a033600000000,
    0x607a044100000000, 0xc3ef60df00000000, 0x55df67a800000000,
    0xef8e6e3100000000, 0x79be694600000000, 0x8cb361cb00000000,
    0x1a8366bc00000000, 0xa0d26f2500000000, 0x36e2685200000000,
    0x95770ccc00000000, 0x03470bbb00000000, 0xb916022200000000,
    0x2f26055500000000, 0xbe3bbac500000000, 0x280bbdb200000000,
    0x925ab42b00000000, 0x046ab35c00000000, 0xa7ffd7c200000000,
    0x31cfd0b500000000, 0x8b9ed92c00000000, 0x1daede5b00000000,
    0xb0c2649b00000000, 0x26f263ec00000000, 0x9ca36a7500000000,
    0x0a936d0200000000, 0xa906099c00000000, 0x3f360eeb00000000,
    0x8567077200000000, 0x1357000500000000, 0x824abf9500000000,
    0x147ab8e200000000, 0xae2bb17b00000000, 0x381bb60c00000000,
    0x9b8ed29200000000, 0x0dbed5e500000000, 0xb7efdc7c00000000,
    0x21dfdb0b00000000, 0xd4d2d38600000000, 0x42e2d4f100000000,
    0xf8b3dd6800000000, 0x6e83da1f00000000, 0xcd16be8100000000,
    0x5b26b9f600000000, 0xe177b06f00000000, 0x7747b71800000000,
    0xe65a088800000000, 0x706a0fff00000000, 0xca3b066600000000,
    0x5c0b011100000000, 0xff9e658f00000000, 0x69ae62f800000000,
    0xd3ff6b6100000000, 0x45cf6c1600000000, 0x78e20aa000000000,
    0xeed20dd700000000, 0x5483044e00000000, 0xc2b3033900000000,
    0x612667a700000000, 0xf71660d000000000, 0x4d47694900000000,
    0xdb776e3e00000000, 0x4a6ad1ae00000000, 0xdc5ad6d900000000,
    0x660bdf4000000000, 0xf03bd83700000000, 0x53aebca900000000,
    0xc59ebbde00000000, 0x7fcfb24700000000, 0xe9ffb53000000000,
    0x1cf2bdbd00000000, 0x8ac2baca00000000, 0x3093b35300000000,
    0xa6a3b42400000000, 0x0536d0ba00000000, 0x9306d7cd00000000,
    0x2957de5400000000, 0xbf67d92300000000, 0x2e7a66b300000000,
    0xb84a61c400000000, 0x021b685d00000000, 0x942b6f2a00000000,
    0x37be0bb400000000, 0xa18e0cc300000000, 0x1bdf055a00000000,
    0x8def022d00000000};

#else /* W == 4 */

local const z_word_t FAR crc_big_table[] = {
    0x00000000, 0x96300777, 0x2c610eee, 0xba510999, 0x19c46d07,
    0x8ff46a70, 0x35a563e9, 0xa395649e, 0x3288db0e, 0xa4b8dc79,
    0x1ee9d5e0, 0x88d9d297, 0x2b4cb609, 0xbd7cb17e, 0x072db8e7,
    0x911dbf90, 0x6410b71d, 0xf220b06a, 0x4871b9f3, 0xde41be84,
    0x7dd4da1a, 0xebe4dd6d, 0x51b5d4f4, 0xc785d383, 0x56986c13,
    0xc0a86b64, 0x7af962fd, 0xecc9658a, 0x4f5c0114, 0xd96c0663,
    0x633d0ffa, 0xf50d088d, 0xc8206e3b, 0x5e10694c, 0xe44160d5,
    0x727167a2, 0xd1e4033c, 0x47d4044b, 0xfd850dd2, 0x6bb50aa5,
    0xfaa8b535, 0x6c98b242, 0xd6c9bbdb, 0x40f9bcac, 0xe36cd832,
    0x755cdf45, 0xcf0dd6dc, 0x593dd1ab, 0xac30d926, 0x3a00de51,
    0x8051d7c8, 0x1661d0bf, 0xb5f4b421, 0x23c4b356, 0x9995bacf,
    0x0fa5bdb8, 0x9eb80228, 0x0888055f, 0xb2d90cc6, 0x24e90bb1,
    0x877c6f2f, 0x114c6858, 0xab1d61c1, 0x3d2d66b6, 0x9041dc76,
    0x0671db01, 0xbc20d298, 0x2a10d5ef, 0x8985b171, 0x1fb5b606,
    0xa5e4bf9f, 0x33d4b8e8, 0xa2c90778, 0x34f9000f, 0x8ea80996,
    0x18980ee1, 0xbb0d6a7f, 0x2d3d6d08, 0x976c6491, 0x015c63e6,
    0xf4516b6b, 0x62616c1c, 0xd8306585, 0x4e0062f2, 0xed95066c,
    0x7ba5011b, 0xc1f40882, 0x57c40ff5, 0xc6d9b065, 0x50e9b712,
    0xeab8be8b, 0x7c88b9fc, 0xdf1ddd62, 0x492dda15, 0xf37cd38c,
    0x654cd4fb, 0x5861b24d, 0xce51b53a, 0x7400bca3, 0xe230bbd4,
    0x41a5df4a, 0xd795d83d, 0x6dc4d1a4, 0xfbf4d6d3, 0x6ae96943,
    0xfcd96e34, 0x468867ad, 0xd0b860da, 0x732d0444, 0xe51d0333,
    0x5f4c0aaa, 0xc97c0ddd, 0x3c710550, 0xaa410227, 0x10100bbe,
    0x86200cc9, 0x25b56857, 0xb3856f20, 0x09d466b9, 0x9fe461ce,
    0x0ef9de5e, 0x98c9d929, 0x2298d0b0, 0xb4a8d7c7, 0x173db359,
    0x810db42e, 0x3b5cbdb7, 0xad6cbac0, 0x2083b8ed, 0xb6b3bf9a,
    0x0ce2b603, 0x9ad2b174, 0x3947d5ea, 0xaf77d29d, 0x1526db04,
    0x8316dc73, 0x120b63e3, 0x843b6494, 0x3e6a6d0d, 0xa85a6a7a,
    0x0bcf0ee4, 0x9dff0993, 0x27ae000a, 0xb19e077d, 0x44930ff0,
    0xd2a30887, 0x68f2011e, 0xfec20669, 0x5d5762f7, 0xcb676580,
    0x71366c19, 0xe7066b6e, 0x761bd4fe, 0xe02bd389, 0x5a7ada10,
    0xcc4add67, 0x6fdfb9f9, 0xf9efbe8e, 0x43beb717, 0xd58eb060,
    0xe8a3d6d6, 0x7e93d1a1, 0xc4c2d838, 0x52f2df4f, 0xf167bbd1,
    0x6757bca6, 0xdd06b53f, 0x4b36b248, 0xda2b0dd8, 0x4c1b0aaf,
    0xf64a0336, 0x607a0441, 0xc3ef60df, 0x55df67a8, 0xef8e6e31,
    0x79be6946, 0x8cb361cb, 0x1a8366bc, 0xa0d26f25, 0x36e26852,
    0x95770ccc, 0x03470bbb, 0xb9160222, 0x2f260555, 0xbe3bbac5,
    0x280bbdb2, 0x925ab42b, 0x046ab35c, 0xa7ffd7c2, 0x31cfd0b5,
    0x8b9ed92c, 0x1daede5b, 0xb0c2649b, 0x26f263ec, 0x9ca36a75,
    0x0a936d02, 0xa906099c, 0x3f360eeb, 0x85670772, 0x13570005,
    0x824abf95, 0x147ab8e2, 0xae2bb17b, 0x381bb60c, 0x9b8ed292,
    0x0dbed5e5, 0xb7efdc7c, 0x21dfdb0b, 0xd4d2d386, 0x42e2d4f1,
    0xf8b3dd68, 0x6e83da1f, 0xcd16be81, 0x5b26b9f6, 0xe177b06f,
    0x7747b718, 0xe65a0888, 0x706a0fff, 0xca3b0666, 0x5c0b0111,
    0xff9e658f, 0x69ae62f8, 0xd3ff6b61, 0x45cf6c16, 0x78e20aa0,
    0xeed20dd7, 0x5483044e, 0xc2b30339, 0x612667a7, 0xf71660d0,
    0x4d476949, 0xdb776e3e, 0x4a6ad1ae, 0xdc5ad6d9, 0x660bdf40,
    0xf03bd837, 0x53aebca9, 0xc59ebbde, 0x7fcfb247, 0xe9ffb530,
    0x1cf2bdbd, 0x8ac2baca, 0x3093b353, 0xa6a3b424, 0x0536d0ba,
    0x9306d7cd, 0x2957de54, 0xbf67d923, 0x2e7a66b3, 0xb84a61c4,
    0x021b685d, 0x942b6f2a, 0x37be0bb4, 0xa18e0cc3, 0x1bdf055a,
    0x8def022d};

#endif

#if N == 1

#if W == 8

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xccaa009e, 0x4225077d, 0x8e8f07e3, 0x844a0efa,
    0x48e00e64, 0xc66f0987, 0x0ac50919, 0xd3e51bb5, 0x1f4f1b2b,
    0x91c01cc8, 0x5d6a1c56, 0x57af154f, 0x9b0515d1, 0x158a1232,
    0xd92012ac, 0x7cbb312b, 0xb01131b5, 0x3e9e3656, 0xf23436c8,
    0xf8f13fd1, 0x345b3f4f, 0xbad438ac, 0x767e3832, 0xaf5e2a9e,
    0x63f42a00, 0xed7b2de3, 0x21d12d7d, 0x2b142464, 0xe7be24fa,
    0x69312319, 0xa59b2387, 0xf9766256, 0x35dc62c8, 0xbb53652b,
    0x77f965b5, 0x7d3c6cac, 0xb1966c32, 0x3f196bd1, 0xf3b36b4f,
    0x2a9379e3, 0xe639797d, 0x68b67e9e, 0xa41c7e00, 0xaed97719,
    0x62737787, 0xecfc7064, 0x205670fa, 0x85cd537d, 0x496753e3,
    0xc7e85400, 0x0b42549e, 0x01875d87, 0xcd2d5d19, 0x43a25afa,
    0x8f085a64, 0x562848c8, 0x9a824856, 0x140d4fb5, 0xd8a74f2b,
    0xd2624632, 0x1ec846ac, 0x9047414f, 0x5ced41d1, 0x299dc2ed,
    0xe537c273, 0x6bb8c590, 0xa712c50e, 0xadd7cc17, 0x617dcc89,
    0xeff2cb6a, 0x2358cbf4, 0xfa78d958, 0x36d2d9c6, 0xb85dde25,
    0x74f7debb, 0x7e32d7a2, 0xb298d73c, 0x3c17d0df, 0xf0bdd041,
    0x5526f3c6, 0x998cf358, 0x1703f4bb, 0xdba9f425, 0xd16cfd3c,
    0x1dc6fda2, 0x9349fa41, 0x5fe3fadf, 0x86c3e873, 0x4a69e8ed,
    0xc4e6ef0e, 0x084cef90, 0x0289e689, 0xce23e617, 0x40ace1f4,
    0x8c06e16a, 0xd0eba0bb, 0x1c41a025, 0x92cea7c6, 0x5e64a758,
    0x54a1ae41, 0x980baedf, 0x1684a93c, 0xda2ea9a2, 0x030ebb0e,
    0xcfa4bb90, 0x412bbc73, 0x8d81bced, 0x8744b5f4, 0x4beeb56a,
    0xc561b289, 0x09cbb217, 0xac509190, 0x60fa910e, 0xee7596ed,
    0x22df9673, 0x281a9f6a, 0xe4b09ff4, 0x6a3f9817, 0xa6959889,
    0x7fb58a25, 0xb31f8abb, 0x3d908d58, 0xf13a8dc6, 0xfbff84df,
    0x37558441, 0xb9da83a2, 0x7570833c, 0x533b85da, 0x9f918544,
    0x111e82a7, 0xddb48239, 0xd7718b20, 0x1bdb8bbe, 0x95548c5d,
    0x59fe8cc3, 0x80de9e6f, 0x4c749ef1, 0xc2fb9912, 0x0e51998c,
    0x04949095, 0xc83e900b, 0x46b197e8, 0x8a1b9776, 0x2f80b4f1,
    0xe32ab46f, 0x6da5b38c, 0xa10fb312, 0xabcaba0b, 0x6760ba95,
    0xe9efbd76, 0x2545bde8, 0xfc65af44, 0x30cfafda, 0xbe40a839,
    0x72eaa8a7, 0x782fa1be, 0xb485a120, 0x3a0aa6c3, 0xf6a0a65d,
    0xaa4de78c, 0x66e7e712, 0xe868e0f1, 0x24c2e06f, 0x2e07e976,
    0xe2ade9e8, 0x6c22ee0b, 0xa088ee95, 0x79a8fc39, 0xb502fca7,
    0x3b8dfb44, 0xf727fbda, 0xfde2f2c3, 0x3148f25d, 0xbfc7f5be,
    0x736df520, 0xd6f6d6a7, 0x1a5cd639, 0x94d3d1da, 0x5879d144,
    0x52bcd85d, 0x9e16d8c3, 0x1099df20, 0xdc33dfbe, 0x0513cd12,
    0xc9b9cd8c, 0x4736ca6f, 0x8b9ccaf1, 0x8159c3e8, 0x4df3c376,
    0xc37cc495, 0x0fd6c40b, 0x7aa64737, 0xb60c47a9, 0x3883404a,
    0xf42940d4, 0xfeec49cd, 0x32464953, 0xbcc94eb0, 0x70634e2e,
    0xa9435c82, 0x65e95c1c, 0xeb665bff, 0x27cc5b61, 0x2d095278,
    0xe1a352e6, 0x6f2c5505, 0xa386559b, 0x061d761c, 0xcab77682,
    0x44387161, 0x889271ff, 0x825778e6, 0x4efd7878, 0xc0727f9b,
    0x0cd87f05, 0xd5f86da9, 0x19526d37, 0x97dd6ad4, 0x5b776a4a,
    0x51b26353, 0x9d1863cd, 0x1397642e, 0xdf3d64b0, 0x83d02561,
    0x4f7a25ff, 0xc1f5221c, 0x0d5f2282, 0x079a2b9b, 0xcb302b05,
    0x45bf2ce6, 0x89152c78, 0x50353ed4, 0x9c9f3e4a, 0x121039a9,
    0xdeba3937, 0xd47f302e, 0x18d530b0, 0x965a3753, 0x5af037cd,
    0xff6b144a, 0x33c114d4, 0xbd4e1337, 0x71e413a9, 0x7b211ab0,
    0xb78b1a2e, 0x39041dcd, 0xf5ae1d53, 0x2c8e0fff, 0xe0240f61,
    0x6eab0882, 0xa201081c, 0xa8c40105, 0x646e019b, 0xeae10678,
    0x264b06e6},
   {0x00000000, 0xa6770bb4, 0x979f1129, 0x31e81a9d, 0xf44f2413,
    0x52382fa7, 0x63d0353a, 0xc5a73e8e, 0x33ef4e67, 0x959845d3,
    0xa4705f4e, 0x020754fa, 0xc7a06a74, 0x61d761c0, 0x503f7b5d,
    0xf64870e9, 0x67de9cce, 0xc1a9977a, 0xf0418de7, 0x56368653,
    0x9391b8dd, 0x35e6b369, 0x040ea9f4, 0xa279a240, 0x5431d2a9,
    0xf246d91d, 0xc3aec380, 0x65d9c834, 0xa07ef6ba, 0x0609fd0e,
    0x37e1e793, 0x9196ec27, 0xcfbd399c, 0x69ca3228, 0x582228b5,
    0xfe552301, 0x3bf21d8f, 0x9d85163b, 0xac6d0ca6, 0x0a1a0712,
    0xfc5277fb, 0x5a257c4f, 0x6bcd66d2, 0xcdba6d66, 0x081d53e8,
    0xae6a585c, 0x9f8242c1, 0x39f54975, 0xa863a552, 0x0e14aee6,
    0x3ffcb47b, 0x998bbfcf, 0x5c2c8141, 0xfa5b8af5, 0xcbb39068,
    0x6dc49bdc, 0x9b8ceb35, 0x3dfbe081, 0x0c13fa1c, 0xaa64f1a8,
    0x6fc3cf26, 0xc9b4c492, 0xf85cde0f, 0x5e2bd5bb, 0x440b7579,
    0xe27c7ecd, 0xd3946450, 0x75e36fe4, 0xb044516a, 0x16335ade,
    0x27db4043, 0x81ac4bf7, 0x77e43b1e, 0xd19330aa, 0xe07b2a37,
    0x460c2183, 0x83ab1f0d, 0x25dc14b9, 0x14340e24, 0xb2430590,
    0x23d5e9b7, 0x85a2e203, 0xb44af89e, 0x123df32a, 0xd79acda4,
    0x71edc610, 0x4005dc8d, 0xe672d739, 0x103aa7d0, 0xb64dac64,
    0x87a5b6f9, 0x21d2bd4d, 0xe47583c3, 0x42028877, 0x73ea92ea,
    0xd59d995e, 0x8bb64ce5, 0x2dc14751, 0x1c295dcc, 0xba5e5678,
    0x7ff968f6, 0xd98e6342, 0xe86679df, 0x4e11726b, 0xb8590282,
    0x1e2e0936, 0x2fc613ab, 0x89b1181f, 0x4c162691, 0xea612d25,
    0xdb8937b8, 0x7dfe3c0c, 0xec68d02b, 0x4a1fdb9f, 0x7bf7c102,
    0xdd80cab6, 0x1827f438, 0xbe50ff8c, 0x8fb8e511, 0x29cfeea5,
    0xdf879e4c, 0x79f095f8, 0x48188f65, 0xee6f84d1, 0x2bc8ba5f,
    0x8dbfb1eb, 0xbc57ab76, 0x1a20a0c2, 0x8816eaf2, 0x2e61e146,
    0x1f89fbdb, 0xb9fef06f, 0x7c59cee1, 0xda2ec555, 0xebc6dfc8,
    0x4db1d47c, 0xbbf9a495, 0x1d8eaf21, 0x2c66b5bc, 0x8a11be08,
    0x4fb68086, 0xe9c18b32, 0xd82991af, 0x7e5e9a1b, 0xefc8763c,
    0x49bf7d88, 0x78576715, 0xde206ca1, 0x1b87522f, 0xbdf0599b,
    0x8c184306, 0x2a6f48b2, 0xdc27385b, 0x7a5033ef, 0x4bb82972,
    0xedcf22c6, 0x28681c48, 0x8e1f17fc, 0xbff70d61, 0x198006d5,
    0x47abd36e, 0xe1dcd8da, 0xd034c247, 0x7643c9f3, 0xb3e4f77d,
    0x1593fcc9, 0x247be654, 0x820cede0, 0x74449d09, 0xd23396bd,
    0xe3db8c20, 0x45ac8794, 0x800bb91a, 0x267cb2ae, 0x1794a833,
    0xb1e3a387, 0x20754fa0, 0x86024414, 0xb7ea5e89, 0x119d553d,
    0xd43a6bb3, 0x724d6007, 0x43a57a9a, 0xe5d2712e, 0x139a01c7,
    0xb5ed0a73, 0x840510ee, 0x22721b5a, 0xe7d525d4, 0x41a22e60,
    0x704a34fd, 0xd63d3f49, 0xcc1d9f8b, 0x6a6a943f, 0x5b828ea2,
    0xfdf58516, 0x3852bb98, 0x9e25b02c, 0xafcdaab1, 0x09baa105,
    0xfff2d1ec, 0x5985da58, 0x686dc0c5, 0xce1acb71, 0x0bbdf5ff,
    0xadcafe4b, 0x9c22e4d6, 0x3a55ef62, 0xabc30345, 0x0db408f1,
    0x3c5c126c, 0x9a2b19d8, 0x5f8c2756, 0xf9fb2ce2, 0xc813367f,
    0x6e643dcb, 0x982c4d22, 0x3e5b4696, 0x0fb35c0b, 0xa9c457bf,
    0x6c636931, 0xca146285, 0xfbfc7818, 0x5d8b73ac, 0x03a0a617,
    0xa5d7ada3, 0x943fb73e, 0x3248bc8a, 0xf7ef8204, 0x519889b0,
    0x6070932d, 0xc6079899, 0x304fe870, 0x9638e3c4, 0xa7d0f959,
    0x01a7f2ed, 0xc400cc63, 0x6277c7d7, 0x539fdd4a, 0xf5e8d6fe,
    0x647e3ad9, 0xc209316d, 0xf3e12bf0, 0x55962044, 0x90311eca,
    0x3646157e, 0x07ae0fe3, 0xa1d90457, 0x579174be, 0xf1e67f0a,
    0xc00e6597, 0x66796e23, 0xa3de50ad, 0x05a95b19, 0x34414184,
    0x92364a30},
   {0x00000000, 0xcb5cd3a5, 0x4dc8a10b, 0x869472ae, 0x9b914216,
    0x50cd91b3, 0xd659e31d, 0x1d0530b8, 0xec53826d, 0x270f51c8,
    0xa19b2366, 0x6ac7f0c3, 0x77c2c07b, 0xbc9e13de, 0x3a0a6170,
    0xf156b2d5, 0x03d6029b, 0xc88ad13e, 0x4e1ea390, 0x85427035,
    0x9847408d, 0x531b9328, 0xd58fe186, 0x1ed33223, 0xef8580f6,
    0x24d95353, 0xa24d21fd, 0x6911f258, 0x7414c2e0, 0xbf481145,
    0x39dc63eb, 0xf280b04e, 0x07ac0536, 0xccf0d693, 0x4a64a43d,
    0x81387798, 0x9c3d4720, 0x57619485, 0xd1f5e62b, 0x1aa9358e,
    0xebff875b, 0x20a354fe, 0xa6372650, 0x6d6bf5f5, 0x706ec54d,
    0xbb3216e8, 0x3da66446, 0xf6fab7e3, 0x047a07ad, 0xcf26d408,
    0x49b2a6a6, 0x82ee7503, 0x9feb45bb, 0x54b7961e, 0xd223e4b0,
    0x197f3715, 0xe82985c0, 0x23755665, 0xa5e124cb, 0x6ebdf76e,
    0x73b8c7d6, 0xb8e41473, 0x3e7066dd, 0xf52cb578, 0x0f580a6c,
    0xc404d9c9, 0x4290ab67, 0x89cc78c2, 0x94c9487a, 0x5f959bdf,
    0xd901e971, 0x125d3ad4, 0xe30b8801, 0x28575ba4, 0xaec3290a,
    0x659ffaaf, 0x789aca17, 0xb3c619b2, 0x35526b1c, 0xfe0eb8b9,
    0x0c8e08f7, 0xc7d2db52, 0x4146a9fc, 0x8a1a7a59, 0x971f4ae1,
    0x5c439944, 0xdad7ebea, 0x118b384f, 0xe0dd8a9a, 0x2b81593f,
    0xad152b91, 0x6649f834, 0x7b4cc88c, 0xb0101b29, 0x36846987,
    0xfdd8ba22, 0x08f40f5a, 0xc3a8dcff, 0x453cae51, 0x8e607df4,
    0x93654d4c, 0x58399ee9, 0xdeadec47, 0x15f13fe2, 0xe4a78d37,
    0x2ffb5e92, 0xa96f2c3c, 0x6233ff99, 0x7f36cf21, 0xb46a1c84,
    0x32fe6e2a, 0xf9a2bd8f, 0x0b220dc1, 0xc07ede64, 0x46eaacca,
    0x8db67f6f, 0x90b34fd7, 0x5bef9c72, 0xdd7beedc, 0x16273d79,
    0xe7718fac, 0x2c2d5c09, 0xaab92ea7, 0x61e5fd02, 0x7ce0cdba,
    0xb7bc1e1f, 0x31286cb1, 0xfa74bf14, 0x1eb014d8, 0xd5ecc77d,
    0x5378b5d3, 0x98246676, 0x852156ce, 0x4e7d856b, 0xc8e9f7c5,
    0x03b52460, 0xf2e396b5, 0x39bf4510, 0xbf2b37be, 0x7477e41b,
    0x6972d4a3, 0xa22e0706, 0x24ba75a8, 0xefe6a60d, 0x1d661643,
    0xd63ac5e6, 0x50aeb748, 0x9bf264ed, 0x86f75455, 0x4dab87f0,
    0xcb3ff55e, 0x006326fb, 0xf135942e, 0x3a69478b, 0xbcfd3525,
    0x77a1e680, 0x6aa4d638, 0xa1f8059d, 0x276c7733, 0xec30a496,
    0x191c11ee, 0xd240c24b, 0x54d4b0e5, 0x9f886340, 0x828d53f8,
    0x49d1805d, 0xcf45f2f3, 0x04192156, 0xf54f9383, 0x3e134026,
    0xb8873288, 0x73dbe12d, 0x6eded195, 0xa5820230, 0x2316709e,
    0xe84aa33b, 0x1aca1375, 0xd196c0d0, 0x5702b27e, 0x9c5e61db,
    0x815b5163, 0x4a0782c6, 0xcc93f068, 0x07cf23cd, 0xf6999118,
    0x3dc542bd, 0xbb513013, 0x700de3b6, 0x6d08d30e, 0xa65400ab,
    0x20c07205, 0xeb9ca1a0, 0x11e81eb4, 0xdab4cd11, 0x5c20bfbf,
    0x977c6c1a, 0x8a795ca2, 0x41258f07, 0xc7b1fda9, 0x0ced2e0c,
    0xfdbb9cd9, 0x36e74f7c, 0xb0733dd2, 0x7b2fee77, 0x662adecf,
    0xad760d6a, 0x2be27fc4, 0xe0beac61, 0x123e1c2f, 0xd962cf8a,
    0x5ff6bd24, 0x94aa6e81, 0x89af5e39, 0x42f38d9c, 0xc467ff32,
    0x0f3b2c97, 0xfe6d9e42, 0x35314de7, 0xb3a53f49, 0x78f9ecec,
    0x65fcdc54, 0xaea00ff1, 0x28347d5f, 0xe368aefa, 0x16441b82,
    0xdd18c827, 0x5b8cba89, 0x90d0692c, 0x8dd55994, 0x46898a31,
    0xc01df89f, 0x0b412b3a, 0xfa1799ef, 0x314b4a4a, 0xb7df38e4,
    0x7c83eb41, 0x6186dbf9, 0xaada085c, 0x2c4e7af2, 0xe712a957,
    0x15921919, 0xdececabc, 0x585ab812, 0x93066bb7, 0x8e035b0f,
    0x455f88aa, 0xc3cbfa04, 0x089729a1, 0xf9c19b74, 0x329d48d1,
    0xb4093a7f, 0x7f55e9da, 0x6250d962, 0xa90c0ac7, 0x2f987869,
    0xe4c4abcc},
   {0x00000000, 0x3d6029b0, 0x7ac05360, 0x47a07ad0, 0xf580a6c0,
    0xc8e08f70, 0x8f40f5a0, 0xb220dc10, 0x30704bc1, 0x0d106271,
    0x4ab018a1, 0x77d03111, 0xc5f0ed01, 0xf890c4b1, 0xbf30be61,
    0x825097d1, 0x60e09782, 0x5d80be32, 0x1a20c4e2, 0x2740ed52,
    0x95603142, 0xa80018f2, 0xefa06222, 0xd2c04b92, 0x5090dc43,
    0x6df0f5f3, 0x2a508f23, 0x1730a693, 0xa5107a83, 0x98705333,
    0xdfd029e3, 0xe2b00053, 0xc1c12f04, 0xfca106b4, 0xbb017c64,
    0x866155d4, 0x344189c4, 0x0921a074, 0x4e81daa4, 0x73e1f314,
    0xf1b164c5, 0xccd14d75, 0x8b7137a5, 0xb6111e15, 0x0431c205,
    0x3951ebb5, 0x7ef19165, 0x4391b8d5, 0xa121b886, 0x9c419136,
    0xdbe1ebe6, 0xe681c256, 0x54a11e46, 0x69c137f6, 0x2e614d26,
    0x13016496, 0x9151f347, 0xac31daf7, 0xeb91a027, 0xd6f18997,
    0x64d15587, 0x59b17c37, 0x1e1106e7, 0x23712f57, 0x58f35849,
    0x659371f9, 0x22330b29, 0x1f532299, 0xad73fe89, 0x9013d739,
    0xd7b3ade9, 0xead38459, 0x68831388, 0x55e33a38, 0x124340e8,
    0x2f236958, 0x9d03b548, 0xa0639cf8, 0xe7c3e628, 0xdaa3cf98,
    0x3813cfcb, 0x0573e67b, 0x42d39cab, 0x7fb3b51b, 0xcd93690b,
    0xf0f340bb, 0xb7533a6b, 0x8a3313db, 0x0863840a, 0x3503adba,
    0x72a3d76a, 0x4fc3feda, 0xfde322ca, 0xc0830b7a, 0x872371aa,
    0xba43581a, 0x9932774d, 0xa4525efd, 0xe3f2242d, 0xde920d9d,
    0x6cb2d18d, 0x51d2f83d, 0x167282ed, 0x2b12ab5d, 0xa9423c8c,
    0x9422153c, 0xd3826fec, 0xeee2465c, 0x5cc29a4c, 0x61a2b3fc,
    0x2602c92c, 0x1b62e09c, 0xf9d2e0cf, 0xc4b2c97f, 0x8312b3af,
    0xbe729a1f, 0x0c52460f, 0x31326fbf, 0x7692156f, 0x4bf23cdf,
    0xc9a2ab0e, 0xf4c282be, 0xb362f86e, 0x8e02d1de, 0x3c220dce,
    0x0142247e, 0x46e25eae, 0x7b82771e, 0xb1e6b092, 0x8c869922,
    0xcb26e3f2, 0xf646ca42, 0x44661652, 0x79063fe2, 0x3ea64532,
    0x03c66c82, 0x8196fb53, 0xbcf6d2e3, 0xfb56a833, 0xc6368183,
    0x74165d93, 0x49767423, 0x0ed60ef3, 0x33b62743, 0xd1062710,
    0xec660ea0, 0xabc67470, 0x96a65dc0, 0x248681d0, 0x19e6a860,
    0x5e46d2b0, 0x6326fb00, 0xe1766cd1, 0xdc164561, 0x9bb63fb1,
    0xa6d61601, 0x14f6ca11, 0x2996e3a1, 0x6e369971, 0x5356b0c1,
    0x70279f96, 0x4d47b626, 0x0ae7ccf6, 0x3787e546, 0x85a73956,
    0xb8c710e6, 0xff676a36, 0xc2074386, 0x4057d457, 0x7d37fde7,
    0x3a978737, 0x07f7ae87, 0xb5d77297, 0x88b75b27, 0xcf1721f7,
    0xf2770847, 0x10c70814, 0x2da721a4, 0x6a075b74, 0x576772c4,
    0xe547aed4, 0xd8278764, 0x9f87fdb4, 0xa2e7d404, 0x20b743d5,
    0x1dd76a65, 0x5a7710b5, 0x67173905, 0xd537e515, 0xe857cca5,
    0xaff7b675, 0x92979fc5, 0xe915e8db, 0xd475c16b, 0x93d5bbbb,
    0xaeb5920b, 0x1c954e1b, 0x21f567ab, 0x66551d7b, 0x5b3534cb,
    0xd965a31a, 0xe4058aaa, 0xa3a5f07a, 0x9ec5d9ca, 0x2ce505da,
    0x11852c6a, 0x562556ba, 0x6b457f0a, 0x89f57f59, 0xb49556e9,
    0xf3352c39, 0xce550589, 0x7c75d999, 0x4115f029, 0x06b58af9,
    0x3bd5a349, 0xb9853498, 0x84e51d28, 0xc34567f8, 0xfe254e48,
    0x4c059258, 0x7165bbe8, 0x36c5c138, 0x0ba5e888, 0x28d4c7df,
    0x15b4ee6f, 0x521494bf, 0x6f74bd0f, 0xdd54611f, 0xe03448af,
    0xa794327f, 0x9af41bcf, 0x18a48c1e, 0x25c4a5ae, 0x6264df7e,
    0x5f04f6ce, 0xed242ade, 0xd044036e, 0x97e479be, 0xaa84500e,
    0x4834505d, 0x755479ed, 0x32f4033d, 0x0f942a8d, 0xbdb4f69d,
    0x80d4df2d, 0xc774a5fd, 0xfa148c4d, 0x78441b9c, 0x4524322c,
    0x028448fc, 0x3fe4614c, 0x8dc4bd5c, 0xb0a494ec, 0xf704ee3c,
    0xca64c78c},
   {0x00000000, 0xb8bc6765, 0xaa09c88b, 0x12b5afee, 0x8f629757,
    0x37def032, 0x256b5fdc, 0x9dd738b9, 0xc5b428ef, 0x7d084f8a,
    0x6fbde064, 0xd7018701, 0x4ad6bfb8, 0xf26ad8dd, 0xe0df7733,
    0x58631056, 0x5019579f, 0xe8a530fa, 0xfa109f14, 0x42acf871,
    0xdf7bc0c8, 0x67c7a7ad, 0x75720843, 0xcdce6f26, 0x95ad7f70,
    0x2d111815, 0x3fa4b7fb, 0x8718d09e, 0x1acfe827, 0xa2738f42,
    0xb0c620ac, 0x087a47c9, 0xa032af3e, 0x188ec85b, 0x0a3b67b5,
    0xb28700d0, 0x2f503869, 0x97ec5f0c, 0x8559f0e2, 0x3de59787,
    0x658687d1, 0xdd3ae0b4, 0xcf8f4f5a, 0x7733283f, 0xeae41086,
    0x525877e3, 0x40edd80d, 0xf851bf68, 0xf02bf8a1, 0x48979fc4,
    0x5a22302a, 0xe29e574f, 0x7f496ff6, 0xc7f50893, 0xd540a77d,
    0x6dfcc018, 0x359fd04e, 0x8d23b72b, 0x9f9618c5, 0x272a7fa0,
    0xbafd4719, 0x0241207c, 0x10f48f92, 0xa848e8f7, 0x9b14583d,
    0x23a83f58, 0x311d90b6, 0x89a1f7d3, 0x1476cf6a, 0xaccaa80f,
    0xbe7f07e1, 0x06c36084, 0x5ea070d2, 0xe61c17b7, 0xf4a9b859,
    0x4c15df3c, 0xd1c2e785, 0x697e80e0, 0x7bcb2f0e, 0xc377486b,
    0xcb0d0fa2, 0x73b168c7, 0x6104c729, 0xd9b8a04c, 0x446f98f5,
    0xfcd3ff90, 0xee66507e, 0x56da371b, 0x0eb9274d, 0xb6054028,
    0xa4b0efc6, 0x1c0c88a3, 0x81dbb01a, 0x3967d77f, 0x2bd27891,
    0x936e1ff4, 0x3b26f703, 0x839a9066, 0x912f3f88, 0x299358ed,
    0xb4446054, 0x0cf80731, 0x1e4da8df, 0xa6f1cfba, 0xfe92dfec,
    0x462eb889, 0x549b1767, 0xec277002, 0x71f048bb, 0xc94c2fde,
    0xdbf98030, 0x6345e755, 0x6b3fa09c, 0xd383c7f9, 0xc1366817,
    0x798a0f72, 0xe45d37cb, 0x5ce150ae, 0x4e54ff40, 0xf6e89825,
    0xae8b8873, 0x1637ef16, 0x048240f8, 0xbc3e279d, 0x21e91f24,
    0x99557841, 0x8be0d7af, 0x335cb0ca, 0xed59b63b, 0x55e5d15e,
    0x47507eb0, 0xffec19d5, 0x623b216c, 0xda874609, 0xc832e9e7,
    0x708e8e82, 0x28ed9ed4, 0x9051f9b1, 0x82e4565f, 0x3a58313a,
    0xa78f0983, 0x1f336ee6, 0x0d86c108, 0xb53aa66d, 0xbd40e1a4,
    0x05fc86c1, 0x1749292f, 0xaff54e4a, 0x322276f3, 0x8a9e1196,
    0x982bbe78, 0x2097d91d, 0x78f4c94b, 0xc048ae2e, 0xd2fd01c0,
    0x6a4166a5, 0xf7965e1c, 0x4f2a3979, 0x5d9f9697, 0xe523f1f2,
    0x4d6b1905, 0xf5d77e60, 0xe762d18e, 0x5fdeb6eb, 0xc2098e52,
    0x7ab5e937, 0x680046d9, 0xd0bc21bc, 0x88df31ea, 0x3063568f,
    0x22d6f961, 0x9a6a9e04, 0x07bda6bd, 0xbf01c1d8, 0xadb46e36,
    0x15080953, 0x1d724e9a, 0xa5ce29ff, 0xb77b8611, 0x0fc7e174,
    0x9210d9cd, 0x2aacbea8, 0x38191146, 0x80a57623, 0xd8c66675,
    0x607a0110, 0x72cfaefe, 0xca73c99b, 0x57a4f122, 0xef189647,
    0xfdad39a9, 0x45115ecc, 0x764dee06, 0xcef18963, 0xdc44268d,
    0x64f841e8, 0xf92f7951, 0x41931e34, 0x5326b1da, 0xeb9ad6bf,
    0xb3f9c6e9, 0x0b45a18c, 0x19f00e62, 0xa14c6907, 0x3c9b51be,
    0x842736db, 0x96929935, 0x2e2efe50, 0x2654b999, 0x9ee8defc,
    0x8c5d7112, 0x34e11677, 0xa9362ece, 0x118a49ab, 0x033fe645,
    0xbb838120, 0xe3e09176, 0x5b5cf613, 0x49e959fd, 0xf1553e98,
    0x6c820621, 0xd43e6144, 0xc68bceaa, 0x7e37a9cf, 0xd67f4138,
    0x6ec3265d, 0x7c7689b3, 0xc4caeed6, 0x591dd66f, 0xe1a1b10a,
    0xf3141ee4, 0x4ba87981, 0x13cb69d7, 0xab770eb2, 0xb9c2a15c,
    0x017ec639, 0x9ca9fe80, 0x241599e5, 0x36a0360b, 0x8e1c516e,
    0x866616a7, 0x3eda71c2, 0x2c6fde2c, 0x94d3b949, 0x090481f0,
    0xb1b8e695, 0xa30d497b, 0x1bb12e1e, 0x43d23e48, 0xfb6e592d,
    0xe9dbf6c3, 0x516791a6, 0xccb0a91f, 0x740cce7a, 0x66b96194,
    0xde0506f1},
   {0x00000000, 0x01c26a37, 0x0384d46e, 0x0246be59, 0x0709a8dc,
    0x06cbc2eb, 0x048d7cb2, 0x054f1685, 0x0e1351b8, 0x0fd13b8f,
    0x0d9785d6, 0x0c55efe1, 0x091af964, 0x08d89353, 0x0a9e2d0a,
    0x0b5c473d, 0x1c26a370, 0x1de4c947, 0x1fa2771e, 0x1e601d29,
    0x1b2f0bac, 0x1aed619b, 0x18abdfc2, 0x1969b5f5, 0x1235f2c8,
    0x13f798ff, 0x11b126a6, 0x10734c91, 0x153c5a14, 0x14fe3023,
    0x16b88e7a, 0x177ae44d, 0x384d46e0, 0x398f2cd7, 0x3bc9928e,
    0x3a0bf8b9, 0x3f44ee3c, 0x3e86840b, 0x3cc03a52, 0x3d025065,
    0x365e1758, 0x379c7d6f, 0x35dac336, 0x3418a901, 0x3157bf84,
    0x3095d5b3, 0x32d36bea, 0x331101dd, 0x246be590, 0x25a98fa7,
    0x27ef31fe, 0x262d5bc9, 0x23624d4c, 0x22a0277b, 0x20e69922,
    0x2124f315, 0x2a78b428, 0x2bbade1f, 0x29fc6046, 0x283e0a71,
    0x2d711cf4, 0x2cb376c3, 0x2ef5c89a, 0x2f37a2ad, 0x709a8dc0,
    0x7158e7f7, 0x731e59ae, 0x72dc3399, 0x7793251c, 0x76514f2b,
    0x7417f172, 0x75d59b45, 0x7e89dc78, 0x7f4bb64f, 0x7d0d0816,
    0x7ccf6221, 0x798074a4, 0x78421e93, 0x7a04a0ca, 0x7bc6cafd,
    0x6cbc2eb0, 0x6d7e4487, 0x6f38fade, 0x6efa90e9, 0x6bb5866c,
    0x6a77ec5b, 0x68315202, 0x69f33835, 0x62af7f08, 0x636d153f,
    0x612bab66, 0x60e9c151, 0x65a6d7d4, 0x6464bde3, 0x662203ba,
    0x67e0698d, 0x48d7cb20, 0x4915a117, 0x4b531f4e, 0x4a917579,
    0x4fde63fc, 0x4e1c09cb, 0x4c5ab792, 0x4d98dda5, 0x46c49a98,
    0x4706f0af, 0x45404ef6, 0x448224c1, 0x41cd3244, 0x400f5873,
    0x4249e62a, 0x438b8c1d, 0x54f16850, 0x55330267, 0x5775bc3e,
    0x56b7d609, 0x53f8c08c, 0x523aaabb, 0x507c14e2, 0x51be7ed5,
    0x5ae239e8, 0x5b2053df, 0x5966ed86, 0x58a487b1, 0x5deb9134,
    0x5c29fb03, 0x5e6f455a, 0x5fad2f6d, 0xe1351b80, 0xe0f771b7,
    0xe2b1cfee, 0xe373a5d9, 0xe63cb35c, 0xe7fed96b, 0xe5b86732,
    0xe47a0d05, 0xef264a38, 0xeee4200f, 0xeca29e56, 0xed60f461,
    0xe82fe2e4, 0xe9ed88d3, 0xebab368a, 0xea695cbd, 0xfd13b8f0,
    0xfcd1d2c7, 0xfe976c9e, 0xff5506a9, 0xfa1a102c, 0xfbd87a1b,
    0xf99ec442, 0xf85cae75, 0xf300e948, 0xf2c2837f, 0xf0843d26,
    0xf1465711, 0xf4094194, 0xf5cb2ba3, 0xf78d95fa, 0xf64fffcd,
    0xd9785d60, 0xd8ba3757, 0xdafc890e, 0xdb3ee339, 0xde71f5bc,
    0xdfb39f8b, 0xddf521d2, 0xdc374be5, 0xd76b0cd8, 0xd6a966ef,
    0xd4efd8b6, 0xd52db281, 0xd062a404, 0xd1a0ce33, 0xd3e6706a,
    0xd2241a5d, 0xc55efe10, 0xc49c9427, 0xc6da2a7e, 0xc7184049,
    0xc25756cc, 0xc3953cfb, 0xc1d382a2, 0xc011e895, 0xcb4dafa8,
    0xca8fc59f, 0xc8c97bc6, 0xc90b11f1, 0xcc440774, 0xcd866d43,
    0xcfc0d31a, 0xce02b92d, 0x91af9640, 0x906dfc77, 0x922b422e,
    0x93e92819, 0x96a63e9c, 0x976454ab, 0x9522eaf2, 0x94e080c5,
    0x9fbcc7f8, 0x9e7eadcf, 0x9c381396, 0x9dfa79a1, 0x98b56f24,
    0x99770513, 0x9b31bb4a, 0x9af3d17d, 0x8d893530, 0x8c4b5f07,
    0x8e0de15e, 0x8fcf8b69, 0x8a809dec, 0x8b42f7db, 0x89044982,
    0x88c623b5, 0x839a6488, 0x82580ebf, 0x801eb0e6, 0x81dcdad1,
    0x8493cc54, 0x8551a663, 0x8717183a, 0x86d5720d, 0xa9e2d0a0,
    0xa820ba97, 0xaa6604ce, 0xaba46ef9, 0xaeeb787c, 0xaf29124b,
    0xad6fac12, 0xacadc625, 0xa7f18118, 0xa633eb2f, 0xa4755576,
    0xa5b73f41, 0xa0f829c4, 0xa13a43f3, 0xa37cfdaa, 0xa2be979d,
    0xb5c473d0, 0xb40619e7, 0xb640a7be, 0xb782cd89, 0xb2cddb0c,
    0xb30fb13b, 0xb1490f62, 0xb08b6555, 0xbbd72268, 0xba15485f,
    0xb853f606, 0xb9919c31, 0xbcde8ab4, 0xbd1ce083, 0xbf5a5eda,
    0xbe9834ed},
   {0x00000000, 0x191b3141, 0x32366282, 0x2b2d53c3, 0x646cc504,
    0x7d77f445, 0x565aa786, 0x4f4196c7, 0xc8d98a08, 0xd1c2bb49,
    0xfaefe88a, 0xe3f4d9cb, 0xacb54f0c, 0xb5ae7e4d, 0x9e832d8e,
    0x87981ccf, 0x4ac21251, 0x53d92310, 0x78f470d3, 0x61ef4192,
    0x2eaed755, 0x37b5e614, 0x1c98b5d7, 0x05838496, 0x821b9859,
    0x9b00a918, 0xb02dfadb, 0xa936cb9a, 0xe6775d5d, 0xff6c6c1c,
    0xd4413fdf, 0xcd5a0e9e, 0x958424a2, 0x8c9f15e3, 0xa7b24620,
    0xbea97761, 0xf1e8e1a6, 0xe8f3d0e7, 0xc3de8324, 0xdac5b265,
    0x5d5daeaa, 0x44469feb, 0x6f6bcc28, 0x7670fd69, 0x39316bae,
    0x202a5aef, 0x0b07092c, 0x121c386d, 0xdf4636f3, 0xc65d07b2,
    0xed705471, 0xf46b6530, 0xbb2af3f7, 0xa231c2b6, 0x891c9175,
    0x9007a034, 0x179fbcfb, 0x0e848dba, 0x25a9de79, 0x3cb2ef38,
    0x73f379ff, 0x6ae848be, 0x41c51b7d, 0x58de2a3c, 0xf0794f05,
    0xe9627e44, 0xc24f2d87, 0xdb541cc6, 0x94158a01, 0x8d0ebb40,
    0xa623e883, 0xbf38d9c2, 0x38a0c50d, 0x21bbf44c, 0x0a96a78f,
    0x138d96ce, 0x5ccc0009, 0x45d73148, 0x6efa628b, 0x77e153ca,
    0xbabb5d54, 0xa3a06c15, 0x888d3fd6, 0x91960e97, 0xded79850,
    0xc7cca911, 0xece1fad2, 0xf5facb93, 0x7262d75c, 0x6b79e61d,
    0x4054b5de, 0x594f849f, 0x160e1258, 0x0f152319, 0x243870da,
    0x3d23419b, 0x65fd6ba7, 0x7ce65ae6, 0x57cb0925, 0x4ed03864,
    0x0191aea3, 0x188a9fe2, 0x33a7cc21, 0x2abcfd60, 0xad24e1af,
    0xb43fd0ee, 0x9f12832d, 0x8609b26c, 0xc94824ab, 0xd05315ea,
    0xfb7e4629, 0xe2657768, 0x2f3f79f6, 0x362448b7, 0x1d091b74,
    0x04122a35, 0x4b53bcf2, 0x52488db3, 0x7965de70, 0x607eef31,
    0xe7e6f3fe, 0xfefdc2bf, 0xd5d0917c, 0xcccba03d, 0x838a36fa,
    0x9a9107bb, 0xb1bc5478, 0xa8a76539, 0x3b83984b, 0x2298a90a,
    0x09b5fac9, 0x10aecb88, 0x5fef5d4f, 0x46f46c0e, 0x6dd93fcd,
    0x74c20e8c, 0xf35a1243, 0xea412302, 0xc16c70c1, 0xd8774180,
    0x9736d747, 0x8e2de606, 0xa500b5c5, 0xbc1b8484, 0x71418a1a,
    0x685abb5b, 0x4377e898, 0x5a6cd9d9, 0x152d4f1e, 0x0c367e5f,
    0x271b2d9c, 0x3e001cdd, 0xb9980012, 0xa0833153, 0x8bae6290,
    0x92b553d1, 0xddf4c516, 0xc4eff457, 0xefc2a794, 0xf6d996d5,
    0xae07bce9, 0xb71c8da8, 0x9c31de6b, 0x852aef2a, 0xca6b79ed,
    0xd37048ac, 0xf85d1b6f, 0xe1462a2e, 0x66de36e1, 0x7fc507a0,
    0x54e85463, 0x4df36522, 0x02b2f3e5, 0x1ba9c2a4, 0x30849167,
    0x299fa026, 0xe4c5aeb8, 0xfdde9ff9, 0xd6f3cc3a, 0xcfe8fd7b,
    0x80a96bbc, 0x99b25afd, 0xb29f093e, 0xab84387f, 0x2c1c24b0,
    0x350715f1, 0x1e2a4632, 0x07317773, 0x4870e1b4, 0x516bd0f5,
    0x7a468336, 0x635db277, 0xcbfad74e, 0xd2e1e60f, 0xf9ccb5cc,
    0xe0d7848d, 0xaf96124a, 0xb68d230b, 0x9da070c8, 0x84bb4189,
    0x03235d46, 0x1a386c07, 0x31153fc4, 0x280e0e85, 0x674f9842,
    0x7e54a903, 0x5579fac0, 0x4c62cb81, 0x8138c51f, 0x9823f45e,
    0xb30ea79d, 0xaa1596dc, 0xe554001b, 0xfc4f315a, 0xd7626299,
    0xce7953d8, 0x49e14f17, 0x50fa7e56, 0x7bd72d95, 0x62cc1cd4,
    0x2d8d8a13, 0x3496bb52, 0x1fbbe891, 0x06a0d9d0, 0x5e7ef3ec,
    0x4765c2ad, 0x6c48916e, 0x7553a02f, 0x3a1236e8, 0x230907a9,
    0x0824546a, 0x113f652b, 0x96a779e4, 0x8fbc48a5, 0xa4911b66,
    0xbd8a2a27, 0xf2cbbce0, 0xebd08da1, 0xc0fdde62, 0xd9e6ef23,
    0x14bce1bd, 0x0da7d0fc, 0x268a833f, 0x3f91b27e, 0x70d024b9,
    0x69cb15f8, 0x42e6463b, 0x5bfd777a, 0xdc656bb5, 0xc57e5af4,
    0xee530937, 0xf7483876, 0xb809aeb1, 0xa1129ff0, 0x8a3fcc33,
    0x9324fd72},
   {0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
    0x2d02ef8d}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x0000000000000000, 0x9630077700000000, 0x2c610eee00000000,
    0xba51099900000000, 0x19c46d0700000000, 0x8ff46a7000000000,
    0x35a563e900000000, 0xa395649e00000000, 0x3288db0e00000000,
    0xa4b8dc7900000000, 0x1ee9d5e000000000, 0x88d9d29700000000,
    0x2b4cb60900000000, 0xbd7cb17e00000000, 0x072db8e700000000,
    0x911dbf9000000000, 0x6410b71d00000000, 0xf220b06a00000000,
    0x4871b9f300000000, 0xde41be8400000000, 0x7dd4da1a00000000,
    0xebe4dd6d00000000, 0x51b5d4f400000000, 0xc785d38300000000,
    0x56986c1300000000, 0xc0a86b6400000000, 0x7af962fd00000000,
    0xecc9658a00000000, 0x4f5c011400000000, 0xd96c066300000000,
    0x633d0ffa00000000, 0xf50d088d00000000, 0xc8206e3b00000000,
    0x5e10694c00000000, 0xe44160d500000000, 0x727167a200000000,
    0xd1e4033c00000000, 0x47d4044b00000000, 0xfd850dd200000000,
    0x6bb50aa500000000, 0xfaa8b53500000000, 0x6c98b24200000000,
    0xd6c9bbdb00000000, 0x40f9bcac00000000, 0xe36cd83200000000,
    0x755cdf4500000000, 0xcf0dd6dc00000000, 0x593dd1ab00000000,
    0xac30d92600000000, 0x3a00de5100000000, 0x8051d7c800000000,
    0x1661d0bf00000000, 0xb5f4b42100000000, 0x23c4b35600000000,
    0x9995bacf00000000, 0x0fa5bdb800000000, 0x9eb8022800000000,
    0x0888055f00000000, 0xb2d90cc600000000, 0x24e90bb100000000,
    0x877c6f2f00000000, 0x114c685800000000, 0xab1d61c100000000,
    0x3d2d66b600000000, 0x9041dc7600000000, 0x0671db0100000000,
    0xbc20d29800000000, 0x2a10d5ef00000000, 0x8985b17100000000,
    0x1fb5b60600000000, 0xa5e4bf9f00000000, 0x33d4b8e800000000,
    0xa2c9077800000000, 0x34f9000f00000000, 0x8ea8099600000000,
    0x18980ee100000000, 0xbb0d6a7f00000000, 0x2d3d6d0800000000,
    0x976c649100000000, 0x015c63e600000000, 0xf4516b6b00000000,
    0x62616c1c00000000, 0xd830658500000000, 0x4e0062f200000000,
    0xed95066c00000000, 0x7ba5011b00000000, 0xc1f4088200000000,
    0x57c40ff500000000, 0xc6d9b06500000000, 0x50e9b71200000000,
    0xeab8be8b00000000, 0x7c88b9fc00000000, 0xdf1ddd6200000000,
    0x492dda1500000000, 0xf37cd38c00000000, 0x654cd4fb00000000,
    0x5861b24d00000000, 0xce51b53a00000000, 0x7400bca300000000,
    0xe230bbd400000000, 0x41a5df4a00000000, 0xd795d83d00000000,
    0x6dc4d1a400000000, 0xfbf4d6d300000000, 0x6ae9694300000000,
    0xfcd96e3400000000, 0x468867ad00000000, 0xd0b860da00000000,
    0x732d044400000000, 0xe51d033300000000, 0x5f4c0aaa00000000,
    0xc97c0ddd00000000, 0x3c71055000000000, 0xaa41022700000000,
    0x10100bbe00000000, 0x86200cc900000000, 0x25b5685700000000,
    0xb3856f2000000000, 0x09d466b900000000, 0x9fe461ce00000000,
    0x0ef9de5e00000000, 0x98c9d92900000000, 0x2298d0b000000000,
    0xb4a8d7c700000000, 0x173db35900000000, 0x810db42e00000000,
    0x3b5cbdb700000000, 0xad6cbac000000000, 0x2083b8ed00000000,
    0xb6b3bf9a00000000, 0x0ce2b60300000000, 0x9ad2b17400000000,
    0x3947d5ea00000000, 0xaf77d29d00000000, 0x1526db0400000000,
    0x8316dc7300000000, 0x120b63e300000000, 0x843b649400000000,
    0x3e6a6d0d00000000, 0xa85a6a7a00000000, 0x0bcf0ee400000000,
    0x9dff099300000000, 0x27ae000a00000000, 0xb19e077d00000000,
    0x44930ff000000000, 0xd2a3088700000000, 0x68f2011e00000000,
    0xfec2066900000000, 0x5d5762f700000000, 0xcb67658000000000,
    0x71366c1900000000, 0xe7066b6e00000000, 0x761bd4fe00000000,
    0xe02bd38900000000, 0x5a7ada1000000000, 0xcc4add6700000000,
    0x6fdfb9f900000000, 0xf9efbe8e00000000, 0x43beb71700000000,
    0xd58eb06000000000, 0xe8a3d6d600000000, 0x7e93d1a100000000,
    0xc4c2d83800000000, 0x52f2df4f00000000, 0xf167bbd100000000,
    0x6757bca600000000, 0xdd06b53f00000000, 0x4b36b24800000000,
    0xda2b0dd800000000, 0x4c1b0aaf00000000, 0xf64a033600000000,
    0x607a044100000000, 0xc3ef60df00000000, 0x55df67a800000000,
    0xef8e6e3100000000, 0x79be694600000000, 0x8cb361cb00000000,
    0x1a8366bc00000000, 0xa0d26f2500000000, 0x36e2685200000000,
    0x95770ccc00000000, 0x03470bbb00000000, 0xb916022200000000,
    0x2f26055500000000, 0xbe3bbac500000000, 0x280bbdb200000000,
    0x925ab42b00000000, 0x046ab35c00000000, 0xa7ffd7c200000000,
    0x31cfd0b500000000, 0x8b9ed92c00000000, 0x1daede5b00000000,
    0xb0c2649b00000000, 0x26f263ec00000000, 0x9ca36a7500000000,
    0x0a936d0200000000, 0xa906099c00000000, 0x3f360eeb00000000,
    0x8567077200000000, 0x1357000500000000, 0x824abf9500000000,
    0x147ab8e200000000, 0xae2bb17b00000000, 0x381bb60c00000000,
    0x9b8ed29200000000, 0x0dbed5e500000000, 0xb7efdc7c00000000,
    0x21dfdb0b00000000, 0xd4d2d38600000000, 0x42e2d4f100000000,
    0xf8b3dd6800000000, 0x6e83da1f00000000, 0xcd16be8100000000,
    0x5b26b9f600000000, 0xe177b06f00000000, 0x7747b71800000000,
    0xe65a088800000000, 0x706a0fff00000000, 0xca3b066600000000,
    0x5c0b011100000000, 0xff9e658f00000000, 0x69ae62f800000000,
    0xd3ff6b6100000000, 0x45cf6c1600000000, 0x78e20aa000000000,
    0xeed20dd700000000, 0x5483044e00000000, 0xc2b3033900000000,
    0x612667a700000000, 0xf71660d000000000, 0x4d47694900000000,
    0xdb776e3e00000000, 0x4a6ad1ae00000000, 0xdc5ad6d900000000,
    0x660bdf4000000000, 0xf03bd83700000000, 0x53aebca900000000,
    0xc59ebbde00000000, 0x7fcfb24700000000, 0xe9ffb53000000000,
    0x1cf2bdbd00000000, 0x8ac2baca00000000, 0x3093b35300000000,
    0xa6a3b42400000000, 0x0536d0ba00000000, 0x9306d7cd00000000,
    0x2957de5400000000, 0xbf67d92300000000, 0x2e7a66b300000000,
    0xb84a61c400000000, 0x021b685d00000000, 0x942b6f2a00000000,
    0x37be0bb400000000, 0xa18e0cc300000000, 0x1bdf055a00000000,
    0x8def022d00000000},
   {0x0000000000000000, 0x41311b1900000000, 0x8262363200000000,
    0xc3532d2b00000000, 0x04c56c6400000000, 0x45f4777d00000000,
    0x86a75a5600000000, 0xc796414f00000000, 0x088ad9c800000000,
    0x49bbc2d100000000, 0x8ae8effa00000000, 0xcbd9f4e300000000,
    0x0c4fb5ac00000000, 0x4d7eaeb500000000, 0x8e2d839e00000000,
    0xcf1c988700000000, 0x5112c24a00000000, 0x1023d95300000000,
    0xd370f47800000000, 0x9241ef6100000000, 0x55d7ae2e00000000,
    0x14e6b53700000000, 0xd7b5981c00000000, 0x9684830500000000,
    0x59981b8200000000, 0x18a9009b00000000, 0xdbfa2db000000000,
    0x9acb36a900000000, 0x5d5d77e600000000, 0x1c6c6cff00000000,
    0xdf3f41d400000000, 0x9e0e5acd00000000, 0xa224849500000000,
    0xe3159f8c00000000, 0x2046b2a700000000, 0x6177a9be00000000,
    0xa6e1e8f100000000, 0xe7d0f3e800000000, 0x2483dec300000000,
    0x65b2c5da00000000, 0xaaae5d5d00000000, 0xeb9f464400000000,
    0x28cc6b6f00000000, 0x69fd707600000000, 0xae6b313900000000,
    0xef5a2a2000000000, 0x2c09070b00000000, 0x6d381c1200000000,
    0xf33646df00000000, 0xb2075dc600000000, 0x715470ed00000000,
    0x30656bf400000000, 0xf7f32abb00000000, 0xb6c231a200000000,
    0x75911c8900000000, 0x34a0079000000000, 0xfbbc9f1700000000,
    0xba8d840e00000000, 0x79dea92500000000, 0x38efb23c00000000,
    0xff79f37300000000, 0xbe48e86a00000000, 0x7d1bc54100000000,
    0x3c2ade5800000000, 0x054f79f000000000, 0x447e62e900000000,
    0x872d4fc200000000, 0xc61c54db00000000, 0x018a159400000000,
    0x40bb0e8d00000000, 0x83e823a600000000, 0xc2d938bf00000000,
    0x0dc5a03800000000, 0x4cf4bb2100000000, 0x8fa7960a00000000,
    0xce968d1300000000, 0x0900cc5c00000000, 0x4831d74500000000,
    0x8b62fa6e00000000, 0xca53e17700000000, 0x545dbbba00000000,
    0x156ca0a300000000, 0xd63f8d8800000000, 0x970e969100000000,
    0x5098d7de00000000, 0x11a9ccc700000000, 0xd2fae1ec00000000,
    0x93cbfaf500000000, 0x5cd7627200000000, 0x1de6796b00000000,
    0xdeb5544000000000, 0x9f844f5900000000, 0x58120e1600000000,
    0x1923150f00000000, 0xda70382400000000, 0x9b41233d00000000,
    0xa76bfd6500000000, 0xe65ae67c00000000, 0x2509cb5700000000,
    0x6438d04e00000000, 0xa3ae910100000000, 0xe29f8a1800000000,
    0x21cca73300000000, 0x60fdbc2a00000000, 0xafe124ad00000000,
    0xeed03fb400000000, 0x2d83129f00000000, 0x6cb2098600000000,
    0xab2448c900000000, 0xea1553d000000000, 0x29467efb00000000,
    0x687765e200000000, 0xf6793f2f00000000, 0xb748243600000000,
    0x741b091d00000000, 0x352a120400000000, 0xf2bc534b00000000,
    0xb38d485200000000, 0x70de657900000000, 0x31ef7e6000000000,
    0xfef3e6e700000000, 0xbfc2fdfe00000000, 0x7c91d0d500000000,
    0x3da0cbcc00000000, 0xfa368a8300000000, 0xbb07919a00000000,
    0x7854bcb100000000, 0x3965a7a800000000, 0x4b98833b00000000,
    0x0aa9982200000000, 0xc9fab50900000000, 0x88cbae1000000000,
    0x4f5def5f00000000, 0x0e6cf44600000000, 0xcd3fd96d00000000,
    0x8c0ec27400000000, 0x43125af300000000, 0x022341ea00000000,
    0xc1706cc100000000, 0x804177d800000000, 0x47d7369700000000,
    0x06e62d8e00000000, 0xc5b500a500000000, 0x84841bbc00000000,
    0x1a8a417100000000, 0x5bbb5a6800000000, 0x98e8774300000000,
    0xd9d96c5a00000000, 0x1e4f2d1500000000, 0x5f7e360c00000000,
    0x9c2d1b2700000000, 0xdd1c003e00000000, 0x120098b900000000,
    0x533183a000000000, 0x9062ae8b00000000, 0xd153b59200000000,
    0x16c5f4dd00000000, 0x57f4efc400000000, 0x94a7c2ef00000000,
    0xd596d9f600000000, 0xe9bc07ae00000000, 0xa88d1cb700000000,
    0x6bde319c00000000, 0x2aef2a8500000000, 0xed796bca00000000,
    0xac4870d300000000, 0x6f1b5df800000000, 0x2e2a46e100000000,
    0xe136de6600000000, 0xa007c57f00000000, 0x6354e85400000000,
    0x2265f34d00000000, 0xe5f3b20200000000, 0xa4c2a91b00000000,
    0x6791843000000000, 0x26a09f2900000000, 0xb8aec5e400000000,
    0xf99fdefd00000000, 0x3accf3d600000000, 0x7bfde8cf00000000,
    0xbc6ba98000000000, 0xfd5ab29900000000, 0x3e099fb200000000,
    0x7f3884ab00000000, 0xb0241c2c00000000, 0xf115073500000000,
    0x32462a1e00000000, 0x7377310700000000, 0xb4e1704800000000,
    0xf5d06b5100000000, 0x3683467a00000000, 0x77b25d6300000000,
    0x4ed7facb00000000, 0x0fe6e1d200000000, 0xccb5ccf900000000,
    0x8d84d7e000000000, 0x4a1296af00000000, 0x0b238db600000000,
    0xc870a09d00000000, 0x8941bb8400000000, 0x465d230300000000,
    0x076c381a00000000, 0xc43f153100000000, 0x850e0e2800000000,
    0x42984f6700000000, 0x03a9547e00000000, 0xc0fa795500000000,
    0x81cb624c00000000, 0x1fc5388100000000, 0x5ef4239800000000,
    0x9da70eb300000000, 0xdc9615aa00000000, 0x1b0054e500000000,
    0x5a314ffc00000000, 0x996262d700000000, 0xd85379ce00000000,
    0x174fe14900000000, 0x567efa5000000000, 0x952dd77b00000000,
    0xd41ccc6200000000, 0x138a8d2d00000000, 0x52bb963400000000,
    0x91e8bb1f00000000, 0xd0d9a00600000000, 0xecf37e5e00000000,
    0xadc2654700000000, 0x6e91486c00000000, 0x2fa0537500000000,
    0xe836123a00000000, 0xa907092300000000, 0x6a54240800000000,
    0x2b653f1100000000, 0xe479a79600000000, 0xa548bc8f00000000,
    0x661b91a400000000, 0x272a8abd00000000, 0xe0bccbf200000000,
    0xa18dd0eb00000000, 0x62defdc000000000, 0x23efe6d900000000,
    0xbde1bc1400000000, 0xfcd0a70d00000000, 0x3f838a2600000000,
    0x7eb2913f00000000, 0xb924d07000000000, 0xf815cb6900000000,
    0x3b46e64200000000, 0x7a77fd5b00000000, 0xb56b65dc00000000,
    0xf45a7ec500000000, 0x370953ee00000000, 0x763848f700000000,
    0xb1ae09b800000000, 0xf09f12a100000000, 0x33cc3f8a00000000,
    0x72fd249300000000},
   {0x0000000000000000, 0x376ac20100000000, 0x6ed4840300000000,
    0x59be460200000000, 0xdca8090700000000, 0xebc2cb0600000000,
    0xb27c8d0400000000, 0x85164f0500000000, 0xb851130e00000000,
    0x8f3bd10f00000000, 0xd685970d00000000, 0xe1ef550c00000000,
    0x64f91a0900000000, 0x5393d80800000000, 0x0a2d9e0a00000000,
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    0xaffa9f6500000000, 0x17ca9a7800000000, 0xb219c6b300000000,
    0x1c6b523500000000, 0xb9b80efe00000000, 0xf7088e0c00000000,
    0x52dbd2c700000000, 0xfca9464100000000, 0x597a1a8a00000000,
    0xe14a1f9700000000, 0x4499435c00000000, 0xeaebd7da00000000,
    0x4f388b1100000000, 0x9a8adde000000000, 0x3f59812b00000000,
    0x912b15ad00000000, 0x34f8496600000000, 0x8cc84c7b00000000,
    0x291b10b000000000, 0x8769843600000000, 0x22bad8fd00000000,
    0x5a0ff40800000000, 0xffdca8c300000000, 0x51ae3c4500000000,
    0xf47d608e00000000, 0x4c4d659300000000, 0xe99e395800000000,
    0x47ecadde00000000, 0xe23ff11500000000, 0x378da7e400000000,
    0x925efb2f00000000, 0x3c2c6fa900000000, 0x99ff336200000000,
    0x21cf367f00000000, 0x841c6ab400000000, 0x2a6efe3200000000,
    0x8fbda2f900000000, 0xc10d220b00000000, 0x64de7ec000000000,
    0xcaacea4600000000, 0x6f7fb68d00000000, 0xd74fb39000000000,
    0x729cef5b00000000, 0xdcee7bdd00000000, 0x793d271600000000,
    0xac8f71e700000000, 0x095c2d2c00000000, 0xa72eb9aa00000000,
    0x02fde56100000000, 0xbacde07c00000000, 0x1f1ebcb700000000,
    0xb16c283100000000, 0x14bf74fa00000000, 0xd814b01e00000000,
    0x7dc7ecd500000000, 0xd3b5785300000000, 0x7666249800000000,
    0xce56218500000000, 0x6b857d4e00000000, 0xc5f7e9c800000000,
    0x6024b50300000000, 0xb596e3f200000000, 0x1045bf3900000000,
    0xbe372bbf00000000, 0x1be4777400000000, 0xa3d4726900000000,
    0x06072ea200000000, 0xa875ba2400000000, 0x0da6e6ef00000000,
    0x4316661d00000000, 0xe6c53ad600000000, 0x48b7ae5000000000,
    0xed64f29b00000000, 0x5554f78600000000, 0xf087ab4d00000000,
    0x5ef53fcb00000000, 0xfb26630000000000, 0x2e9435f100000000,
    0x8b47693a00000000, 0x2535fdbc00000000, 0x80e6a17700000000,
    0x38d6a46a00000000, 0x9d05f8a100000000, 0x33776c2700000000,
    0x96a430ec00000000, 0xee111c1900000000, 0x4bc240d200000000,
    0xe5b0d45400000000, 0x4063889f00000000, 0xf8538d8200000000,
    0x5d80d14900000000, 0xf3f245cf00000000, 0x5621190400000000,
    0x83934ff500000000, 0x2640133e00000000, 0x883287b800000000,
    0x2de1db7300000000, 0x95d1de6e00000000, 0x300282a500000000,
    0x9e70162300000000, 0x3ba34ae800000000, 0x7513ca1a00000000,
    0xd0c096d100000000, 0x7eb2025700000000, 0xdb615e9c00000000,
    0x63515b8100000000, 0xc682074a00000000, 0x68f093cc00000000,
    0xcd23cf0700000000, 0x189199f600000000, 0xbd42c53d00000000,
    0x133051bb00000000, 0xb6e30d7000000000, 0x0ed3086d00000000,
    0xab0054a600000000, 0x0572c02000000000, 0xa0a19ceb00000000,
    0xb41ee81100000000, 0x11cdb4da00000000, 0xbfbf205c00000000,
    0x1a6c7c9700000000, 0xa25c798a00000000, 0x078f254100000000,
    0xa9fdb1c700000000, 0x0c2eed0c00000000, 0xd99cbbfd00000000,
    0x7c4fe73600000000, 0xd23d73b000000000, 0x77ee2f7b00000000,
    0xcfde2a6600000000, 0x6a0d76ad00000000, 0xc47fe22b00000000,
    0x61acbee000000000, 0x2f1c3e1200000000, 0x8acf62d900000000,
    0x24bdf65f00000000, 0x816eaa9400000000, 0x395eaf8900000000,
    0x9c8df34200000000, 0x32ff67c400000000, 0x972c3b0f00000000,
    0x429e6dfe00000000, 0xe74d313500000000, 0x493fa5b300000000,
    0xececf97800000000, 0x54dcfc6500000000, 0xf10fa0ae00000000,
    0x5f7d342800000000, 0xfaae68e300000000, 0x821b441600000000,
    0x27c818dd00000000, 0x89ba8c5b00000000, 0x2c69d09000000000,
    0x9459d58d00000000, 0x318a894600000000, 0x9ff81dc000000000,
    0x3a2b410b00000000, 0xef9917fa00000000, 0x4a4a4b3100000000,
    0xe438dfb700000000, 0x41eb837c00000000, 0xf9db866100000000,
    0x5c08daaa00000000, 0xf27a4e2c00000000, 0x57a912e700000000,
    0x1919921500000000, 0xbccacede00000000, 0x12b85a5800000000,
    0xb76b069300000000, 0x0f5b038e00000000, 0xaa885f4500000000,
    0x04facbc300000000, 0xa129970800000000, 0x749bc1f900000000,
    0xd1489d3200000000, 0x7f3a09b400000000, 0xdae9557f00000000,
    0x62d9506200000000, 0xc70a0ca900000000, 0x6978982f00000000,
    0xccabc4e400000000},
   {0x0000000000000000, 0xb40b77a600000000, 0x29119f9700000000,
    0x9d1ae83100000000, 0x13244ff400000000, 0xa72f385200000000,
    0x3a35d06300000000, 0x8e3ea7c500000000, 0x674eef3300000000,
    0xd345989500000000, 0x4e5f70a400000000, 0xfa54070200000000,
    0x746aa0c700000000, 0xc061d76100000000, 0x5d7b3f5000000000,
    0xe97048f600000000, 0xce9cde6700000000, 0x7a97a9c100000000,
    0xe78d41f000000000, 0x5386365600000000, 0xddb8919300000000,
    0x69b3e63500000000, 0xf4a90e0400000000, 0x40a279a200000000,
    0xa9d2315400000000, 0x1dd946f200000000, 0x80c3aec300000000,
    0x34c8d96500000000, 0xbaf67ea000000000, 0x0efd090600000000,
    0x93e7e13700000000, 0x27ec969100000000, 0x9c39bdcf00000000,
    0x2832ca6900000000, 0xb528225800000000, 0x012355fe00000000,
    0x8f1df23b00000000, 0x3b16859d00000000, 0xa60c6dac00000000,
    0x12071a0a00000000, 0xfb7752fc00000000, 0x4f7c255a00000000,
    0xd266cd6b00000000, 0x666dbacd00000000, 0xe8531d0800000000,
    0x5c586aae00000000, 0xc142829f00000000, 0x7549f53900000000,
    0x52a563a800000000, 0xe6ae140e00000000, 0x7bb4fc3f00000000,
    0xcfbf8b9900000000, 0x41812c5c00000000, 0xf58a5bfa00000000,
    0x6890b3cb00000000, 0xdc9bc46d00000000, 0x35eb8c9b00000000,
    0x81e0fb3d00000000, 0x1cfa130c00000000, 0xa8f164aa00000000,
    0x26cfc36f00000000, 0x92c4b4c900000000, 0x0fde5cf800000000,
    0xbbd52b5e00000000, 0x79750b4400000000, 0xcd7e7ce200000000,
    0x506494d300000000, 0xe46fe37500000000, 0x6a5144b000000000,
    0xde5a331600000000, 0x4340db2700000000, 0xf74bac8100000000,
    0x1e3be47700000000, 0xaa3093d100000000, 0x372a7be000000000,
    0x83210c4600000000, 0x0d1fab8300000000, 0xb914dc2500000000,
    0x240e341400000000, 0x900543b200000000, 0xb7e9d52300000000,
    0x03e2a28500000000, 0x9ef84ab400000000, 0x2af33d1200000000,
    0xa4cd9ad700000000, 0x10c6ed7100000000, 0x8ddc054000000000,
    0x39d772e600000000, 0xd0a73a1000000000, 0x64ac4db600000000,
    0xf9b6a58700000000, 0x4dbdd22100000000, 0xc38375e400000000,
    0x7788024200000000, 0xea92ea7300000000, 0x5e999dd500000000,
    0xe54cb68b00000000, 0x5147c12d00000000, 0xcc5d291c00000000,
    0x78565eba00000000, 0xf668f97f00000000, 0x42638ed900000000,
    0xdf7966e800000000, 0x6b72114e00000000, 0x820259b800000000,
    0x36092e1e00000000, 0xab13c62f00000000, 0x1f18b18900000000,
    0x9126164c00000000, 0x252d61ea00000000, 0xb83789db00000000,
    0x0c3cfe7d00000000, 0x2bd068ec00000000, 0x9fdb1f4a00000000,
    0x02c1f77b00000000, 0xb6ca80dd00000000, 0x38f4271800000000,
    0x8cff50be00000000, 0x11e5b88f00000000, 0xa5eecf2900000000,
    0x4c9e87df00000000, 0xf895f07900000000, 0x658f184800000000,
    0xd1846fee00000000, 0x5fbac82b00000000, 0xebb1bf8d00000000,
    0x76ab57bc00000000, 0xc2a0201a00000000, 0xf2ea168800000000,
    0x46e1612e00000000, 0xdbfb891f00000000, 0x6ff0feb900000000,
    0xe1ce597c00000000, 0x55c52eda00000000, 0xc8dfc6eb00000000,
    0x7cd4b14d00000000, 0x95a4f9bb00000000, 0x21af8e1d00000000,
    0xbcb5662c00000000, 0x08be118a00000000, 0x8680b64f00000000,
    0x328bc1e900000000, 0xaf9129d800000000, 0x1b9a5e7e00000000,
    0x3c76c8ef00000000, 0x887dbf4900000000, 0x1567577800000000,
    0xa16c20de00000000, 0x2f52871b00000000, 0x9b59f0bd00000000,
    0x0643188c00000000, 0xb2486f2a00000000, 0x5b3827dc00000000,
    0xef33507a00000000, 0x7229b84b00000000, 0xc622cfed00000000,
    0x481c682800000000, 0xfc171f8e00000000, 0x610df7bf00000000,
    0xd506801900000000, 0x6ed3ab4700000000, 0xdad8dce100000000,
    0x47c234d000000000, 0xf3c9437600000000, 0x7df7e4b300000000,
    0xc9fc931500000000, 0x54e67b2400000000, 0xe0ed0c8200000000,
    0x099d447400000000, 0xbd9633d200000000, 0x208cdbe300000000,
    0x9487ac4500000000, 0x1ab90b8000000000, 0xaeb27c2600000000,
    0x33a8941700000000, 0x87a3e3b100000000, 0xa04f752000000000,
    0x1444028600000000, 0x895eeab700000000, 0x3d559d1100000000,
    0xb36b3ad400000000, 0x07604d7200000000, 0x9a7aa54300000000,
    0x2e71d2e500000000, 0xc7019a1300000000, 0x730aedb500000000,
    0xee10058400000000, 0x5a1b722200000000, 0xd425d5e700000000,
    0x602ea24100000000, 0xfd344a7000000000, 0x493f3dd600000000,
    0x8b9f1dcc00000000, 0x3f946a6a00000000, 0xa28e825b00000000,
    0x1685f5fd00000000, 0x98bb523800000000, 0x2cb0259e00000000,
    0xb1aacdaf00000000, 0x05a1ba0900000000, 0xecd1f2ff00000000,
    0x58da855900000000, 0xc5c06d6800000000, 0x71cb1ace00000000,
    0xfff5bd0b00000000, 0x4bfecaad00000000, 0xd6e4229c00000000,
    0x62ef553a00000000, 0x4503c3ab00000000, 0xf108b40d00000000,
    0x6c125c3c00000000, 0xd8192b9a00000000, 0x56278c5f00000000,
    0xe22cfbf900000000, 0x7f3613c800000000, 0xcb3d646e00000000,
    0x224d2c9800000000, 0x96465b3e00000000, 0x0b5cb30f00000000,
    0xbf57c4a900000000, 0x3169636c00000000, 0x856214ca00000000,
    0x1878fcfb00000000, 0xac738b5d00000000, 0x17a6a00300000000,
    0xa3add7a500000000, 0x3eb73f9400000000, 0x8abc483200000000,
    0x0482eff700000000, 0xb089985100000000, 0x2d93706000000000,
    0x999807c600000000, 0x70e84f3000000000, 0xc4e3389600000000,
    0x59f9d0a700000000, 0xedf2a70100000000, 0x63cc00c400000000,
    0xd7c7776200000000, 0x4add9f5300000000, 0xfed6e8f500000000,
    0xd93a7e6400000000, 0x6d3109c200000000, 0xf02be1f300000000,
    0x4420965500000000, 0xca1e319000000000, 0x7e15463600000000,
    0xe30fae0700000000, 0x5704d9a100000000, 0xbe74915700000000,
    0x0a7fe6f100000000, 0x97650ec000000000, 0x236e796600000000,
    0xad50dea300000000, 0x195ba90500000000, 0x8441413400000000,
    0x304a369200000000},
   {0x0000000000000000, 0x9e00aacc00000000, 0x7d07254200000000,
    0xe3078f8e00000000, 0xfa0e4a8400000000, 0x640ee04800000000,
    0x87096fc600000000, 0x1909c50a00000000, 0xb51be5d300000000,
    0x2b1b4f1f00000000, 0xc81cc09100000000, 0x561c6a5d00000000,
    0x4f15af5700000000, 0xd115059b00000000, 0x32128a1500000000,
    0xac1220d900000000, 0x2b31bb7c00000000, 0xb53111b000000000,
    0x56369e3e00000000, 0xc83634f200000000, 0xd13ff1f800000000,
    0x4f3f5b3400000000, 0xac38d4ba00000000, 0x32387e7600000000,
    0x9e2a5eaf00000000, 0x002af46300000000, 0xe32d7bed00000000,
    0x7d2dd12100000000, 0x6424142b00000000, 0xfa24bee700000000,
    0x1923316900000000, 0x87239ba500000000, 0x566276f900000000,
    0xc862dc3500000000, 0x2b6553bb00000000, 0xb565f97700000000,
    0xac6c3c7d00000000, 0x326c96b100000000, 0xd16b193f00000000,
    0x4f6bb3f300000000, 0xe379932a00000000, 0x7d7939e600000000,
    0x9e7eb66800000000, 0x007e1ca400000000, 0x1977d9ae00000000,
    0x8777736200000000, 0x6470fcec00000000, 0xfa70562000000000,
    0x7d53cd8500000000, 0xe353674900000000, 0x0054e8c700000000,
    0x9e54420b00000000, 0x875d870100000000, 0x195d2dcd00000000,
    0xfa5aa24300000000, 0x645a088f00000000, 0xc848285600000000,
    0x5648829a00000000, 0xb54f0d1400000000, 0x2b4fa7d800000000,
    0x324662d200000000, 0xac46c81e00000000, 0x4f41479000000000,
    0xd141ed5c00000000, 0xedc29d2900000000, 0x73c237e500000000,
    0x90c5b86b00000000, 0x0ec512a700000000, 0x17ccd7ad00000000,
    0x89cc7d6100000000, 0x6acbf2ef00000000, 0xf4cb582300000000,
    0x58d978fa00000000, 0xc6d9d23600000000, 0x25de5db800000000,
    0xbbdef77400000000, 0xa2d7327e00000000, 0x3cd798b200000000,
    0xdfd0173c00000000, 0x41d0bdf000000000, 0xc6f3265500000000,
    0x58f38c9900000000, 0xbbf4031700000000, 0x25f4a9db00000000,
    0x3cfd6cd100000000, 0xa2fdc61d00000000, 0x41fa499300000000,
    0xdffae35f00000000, 0x73e8c38600000000, 0xede8694a00000000,
    0x0eefe6c400000000, 0x90ef4c0800000000, 0x89e6890200000000,
    0x17e623ce00000000, 0xf4e1ac4000000000, 0x6ae1068c00000000,
    0xbba0ebd000000000, 0x25a0411c00000000, 0xc6a7ce9200000000,
    0x58a7645e00000000, 0x41aea15400000000, 0xdfae0b9800000000,
    0x3ca9841600000000, 0xa2a92eda00000000, 0x0ebb0e0300000000,
    0x90bba4cf00000000, 0x73bc2b4100000000, 0xedbc818d00000000,
    0xf4b5448700000000, 0x6ab5ee4b00000000, 0x89b261c500000000,
    0x17b2cb0900000000, 0x909150ac00000000, 0x0e91fa6000000000,
    0xed9675ee00000000, 0x7396df2200000000, 0x6a9f1a2800000000,
    0xf49fb0e400000000, 0x17983f6a00000000, 0x899895a600000000,
    0x258ab57f00000000, 0xbb8a1fb300000000, 0x588d903d00000000,
    0xc68d3af100000000, 0xdf84fffb00000000, 0x4184553700000000,
    0xa283dab900000000, 0x3c83707500000000, 0xda853b5300000000,
    0x4485919f00000000, 0xa7821e1100000000, 0x3982b4dd00000000,
    0x208b71d700000000, 0xbe8bdb1b00000000, 0x5d8c549500000000,
    0xc38cfe5900000000, 0x6f9ede8000000000, 0xf19e744c00000000,
    0x1299fbc200000000, 0x8c99510e00000000, 0x9590940400000000,
    0x0b903ec800000000, 0xe897b14600000000, 0x76971b8a00000000,
    0xf1b4802f00000000, 0x6fb42ae300000000, 0x8cb3a56d00000000,
    0x12b30fa100000000, 0x0bbacaab00000000, 0x95ba606700000000,
    0x76bdefe900000000, 0xe8bd452500000000, 0x44af65fc00000000,
    0xdaafcf3000000000, 0x39a840be00000000, 0xa7a8ea7200000000,
    0xbea12f7800000000, 0x20a185b400000000, 0xc3a60a3a00000000,
    0x5da6a0f600000000, 0x8ce74daa00000000, 0x12e7e76600000000,
    0xf1e068e800000000, 0x6fe0c22400000000, 0x76e9072e00000000,
    0xe8e9ade200000000, 0x0bee226c00000000, 0x95ee88a000000000,
    0x39fca87900000000, 0xa7fc02b500000000, 0x44fb8d3b00000000,
    0xdafb27f700000000, 0xc3f2e2fd00000000, 0x5df2483100000000,
    0xbef5c7bf00000000, 0x20f56d7300000000, 0xa7d6f6d600000000,
    0x39d65c1a00000000, 0xdad1d39400000000, 0x44d1795800000000,
    0x5dd8bc5200000000, 0xc3d8169e00000000, 0x20df991000000000,
    0xbedf33dc00000000, 0x12cd130500000000, 0x8ccdb9c900000000,
    0x6fca364700000000, 0xf1ca9c8b00000000, 0xe8c3598100000000,
    0x76c3f34d00000000, 0x95c47cc300000000, 0x0bc4d60f00000000,
    0x3747a67a00000000, 0xa9470cb600000000, 0x4a40833800000000,
    0xd44029f400000000, 0xcd49ecfe00000000, 0x5349463200000000,
    0xb04ec9bc00000000, 0x2e4e637000000000, 0x825c43a900000000,
    0x1c5ce96500000000, 0xff5b66eb00000000, 0x615bcc2700000000,
    0x7852092d00000000, 0xe652a3e100000000, 0x05552c6f00000000,
    0x9b5586a300000000, 0x1c761d0600000000, 0x8276b7ca00000000,
    0x6171384400000000, 0xff71928800000000, 0xe678578200000000,
    0x7878fd4e00000000, 0x9b7f72c000000000, 0x057fd80c00000000,
    0xa96df8d500000000, 0x376d521900000000, 0xd46add9700000000,
    0x4a6a775b00000000, 0x5363b25100000000, 0xcd63189d00000000,
    0x2e64971300000000, 0xb0643ddf00000000, 0x6125d08300000000,
    0xff257a4f00000000, 0x1c22f5c100000000, 0x82225f0d00000000,
    0x9b2b9a0700000000, 0x052b30cb00000000, 0xe62cbf4500000000,
    0x782c158900000000, 0xd43e355000000000, 0x4a3e9f9c00000000,
    0xa939101200000000, 0x3739bade00000000, 0x2e307fd400000000,
    0xb030d51800000000, 0x53375a9600000000, 0xcd37f05a00000000,
    0x4a146bff00000000, 0xd414c13300000000, 0x37134ebd00000000,
    0xa913e47100000000, 0xb01a217b00000000, 0x2e1a8bb700000000,
    0xcd1d043900000000, 0x531daef500000000, 0xff0f8e2c00000000,
    0x610f24e000000000, 0x8208ab6e00000000, 0x1c0801a200000000,
    0x0501c4a800000000, 0x9b016e6400000000, 0x7806e1ea00000000,
    0xe6064b2600000000}};

#else /* W == 4 */

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xb8bc6765, 0xaa09c88b, 0x12b5afee, 0x8f629757,
    0x37def032, 0x256b5fdc, 0x9dd738b9, 0xc5b428ef, 0x7d084f8a,
    0x6fbde064, 0xd7018701, 0x4ad6bfb8, 0xf26ad8dd, 0xe0df7733,
    0x58631056, 0x5019579f, 0xe8a530fa, 0xfa109f14, 0x42acf871,
    0xdf7bc0c8, 0x67c7a7ad, 0x75720843, 0xcdce6f26, 0x95ad7f70,
    0x2d111815, 0x3fa4b7fb, 0x8718d09e, 0x1acfe827, 0xa2738f42,
    0xb0c620ac, 0x087a47c9, 0xa032af3e, 0x188ec85b, 0x0a3b67b5,
    0xb28700d0, 0x2f503869, 0x97ec5f0c, 0x8559f0e2, 0x3de59787,
    0x658687d1, 0xdd3ae0b4, 0xcf8f4f5a, 0x7733283f, 0xeae41086,
    0x525877e3, 0x40edd80d, 0xf851bf68, 0xf02bf8a1, 0x48979fc4,
    0x5a22302a, 0xe29e574f, 0x7f496ff6, 0xc7f50893, 0xd540a77d,
    0x6dfcc018, 0x359fd04e, 0x8d23b72b, 0x9f9618c5, 0x272a7fa0,
    0xbafd4719, 0x0241207c, 0x10f48f92, 0xa848e8f7, 0x9b14583d,
    0x23a83f58, 0x311d90b6, 0x89a1f7d3, 0x1476cf6a, 0xaccaa80f,
    0xbe7f07e1, 0x06c36084, 0x5ea070d2, 0xe61c17b7, 0xf4a9b859,
    0x4c15df3c, 0xd1c2e785, 0x697e80e0, 0x7bcb2f0e, 0xc377486b,
    0xcb0d0fa2, 0x73b168c7, 0x6104c729, 0xd9b8a04c, 0x446f98f5,
    0xfcd3ff90, 0xee66507e, 0x56da371b, 0x0eb9274d, 0xb6054028,
    0xa4b0efc6, 0x1c0c88a3, 0x81dbb01a, 0x3967d77f, 0x2bd27891,
    0x936e1ff4, 0x3b26f703, 0x839a9066, 0x912f3f88, 0x299358ed,
    0xb4446054, 0x0cf80731, 0x1e4da8df, 0xa6f1cfba, 0xfe92dfec,
    0x462eb889, 0x549b1767, 0xec277002, 0x71f048bb, 0xc94c2fde,
    0xdbf98030, 0x6345e755, 0x6b3fa09c, 0xd383c7f9, 0xc1366817,
    0x798a0f72, 0xe45d37cb, 0x5ce150ae, 0x4e54ff40, 0xf6e89825,
    0xae8b8873, 0x1637ef16, 0x048240f8, 0xbc3e279d, 0x21e91f24,
    0x99557841, 0x8be0d7af, 0x335cb0ca, 0xed59b63b, 0x55e5d15e,
    0x47507eb0, 0xffec19d5, 0x623b216c, 0xda874609, 0xc832e9e7,
    0x708e8e82, 0x28ed9ed4, 0x9051f9b1, 0x82e4565f, 0x3a58313a,
    0xa78f0983, 0x1f336ee6, 0x0d86c108, 0xb53aa66d, 0xbd40e1a4,
    0x05fc86c1, 0x1749292f, 0xaff54e4a, 0x322276f3, 0x8a9e1196,
    0x982bbe78, 0x2097d91d, 0x78f4c94b, 0xc048ae2e, 0xd2fd01c0,
    0x6a4166a5, 0xf7965e1c, 0x4f2a3979, 0x5d9f9697, 0xe523f1f2,
    0x4d6b1905, 0xf5d77e60, 0xe762d18e, 0x5fdeb6eb, 0xc2098e52,
    0x7ab5e937, 0x680046d9, 0xd0bc21bc, 0x88df31ea, 0x3063568f,
    0x22d6f961, 0x9a6a9e04, 0x07bda6bd, 0xbf01c1d8, 0xadb46e36,
    0x15080953, 0x1d724e9a, 0xa5ce29ff, 0xb77b8611, 0x0fc7e174,
    0x9210d9cd, 0x2aacbea8, 0x38191146, 0x80a57623, 0xd8c66675,
    0x607a0110, 0x72cfaefe, 0xca73c99b, 0x57a4f122, 0xef189647,
    0xfdad39a9, 0x45115ecc, 0x764dee06, 0xcef18963, 0xdc44268d,
    0x64f841e8, 0xf92f7951, 0x41931e34, 0x5326b1da, 0xeb9ad6bf,
    0xb3f9c6e9, 0x0b45a18c, 0x19f00e62, 0xa14c6907, 0x3c9b51be,
    0x842736db, 0x96929935, 0x2e2efe50, 0x2654b999, 0x9ee8defc,
    0x8c5d7112, 0x34e11677, 0xa9362ece, 0x118a49ab, 0x033fe645,
    0xbb838120, 0xe3e09176, 0x5b5cf613, 0x49e959fd, 0xf1553e98,
    0x6c820621, 0xd43e6144, 0xc68bceaa, 0x7e37a9cf, 0xd67f4138,
    0x6ec3265d, 0x7c7689b3, 0xc4caeed6, 0x591dd66f, 0xe1a1b10a,
    0xf3141ee4, 0x4ba87981, 0x13cb69d7, 0xab770eb2, 0xb9c2a15c,
    0x017ec639, 0x9ca9fe80, 0x241599e5, 0x36a0360b, 0x8e1c516e,
    0x866616a7, 0x3eda71c2, 0x2c6fde2c, 0x94d3b949, 0x090481f0,
    0xb1b8e695, 0xa30d497b, 0x1bb12e1e, 0x43d23e48, 0xfb6e592d,
    0xe9dbf6c3, 0x516791a6, 0xccb0a91f, 0x740cce7a, 0x66b96194,
    0xde0506f1},
   {0x00000000, 0x01c26a37, 0x0384d46e, 0x0246be59, 0x0709a8dc,
    0x06cbc2eb, 0x048d7cb2, 0x054f1685, 0x0e1351b8, 0x0fd13b8f,
    0x0d9785d6, 0x0c55efe1, 0x091af964, 0x08d89353, 0x0a9e2d0a,
    0x0b5c473d, 0x1c26a370, 0x1de4c947, 0x1fa2771e, 0x1e601d29,
    0x1b2f0bac, 0x1aed619b, 0x18abdfc2, 0x1969b5f5, 0x1235f2c8,
    0x13f798ff, 0x11b126a6, 0x10734c91, 0x153c5a14, 0x14fe3023,
    0x16b88e7a, 0x177ae44d, 0x384d46e0, 0x398f2cd7, 0x3bc9928e,
    0x3a0bf8b9, 0x3f44ee3c, 0x3e86840b, 0x3cc03a52, 0x3d025065,
    0x365e1758, 0x379c7d6f, 0x35dac336, 0x3418a901, 0x3157bf84,
    0x3095d5b3, 0x32d36bea, 0x331101dd, 0x246be590, 0x25a98fa7,
    0x27ef31fe, 0x262d5bc9, 0x23624d4c, 0x22a0277b, 0x20e69922,
    0x2124f315, 0x2a78b428, 0x2bbade1f, 0x29fc6046, 0x283e0a71,
    0x2d711cf4, 0x2cb376c3, 0x2ef5c89a, 0x2f37a2ad, 0x709a8dc0,
    0x7158e7f7, 0x731e59ae, 0x72dc3399, 0x7793251c, 0x76514f2b,
    0x7417f172, 0x75d59b45, 0x7e89dc78, 0x7f4bb64f, 0x7d0d0816,
    0x7ccf6221, 0x798074a4, 0x78421e93, 0x7a04a0ca, 0x7bc6cafd,
    0x6cbc2eb0, 0x6d7e4487, 0x6f38fade, 0x6efa90e9, 0x6bb5866c,
    0x6a77ec5b, 0x68315202, 0x69f33835, 0x62af7f08, 0x636d153f,
    0x612bab66, 0x60e9c151, 0x65a6d7d4, 0x6464bde3, 0x662203ba,
    0x67e0698d, 0x48d7cb20, 0x4915a117, 0x4b531f4e, 0x4a917579,
    0x4fde63fc, 0x4e1c09cb, 0x4c5ab792, 0x4d98dda5, 0x46c49a98,
    0x4706f0af, 0x45404ef6, 0x448224c1, 0x41cd3244, 0x400f5873,
    0x4249e62a, 0x438b8c1d, 0x54f16850, 0x55330267, 0x5775bc3e,
    0x56b7d609, 0x53f8c08c, 0x523aaabb, 0x507c14e2, 0x51be7ed5,
    0x5ae239e8, 0x5b2053df, 0x5966ed86, 0x58a487b1, 0x5deb9134,
    0x5c29fb03, 0x5e6f455a, 0x5fad2f6d, 0xe1351b80, 0xe0f771b7,
    0xe2b1cfee, 0xe373a5d9, 0xe63cb35c, 0xe7fed96b, 0xe5b86732,
    0xe47a0d05, 0xef264a38, 0xeee4200f, 0xeca29e56, 0xed60f461,
    0xe82fe2e4, 0xe9ed88d3, 0xebab368a, 0xea695cbd, 0xfd13b8f0,
    0xfcd1d2c7, 0xfe976c9e, 0xff5506a9, 0xfa1a102c, 0xfbd87a1b,
    0xf99ec442, 0xf85cae75, 0xf300e948, 0xf2c2837f, 0xf0843d26,
    0xf1465711, 0xf4094194, 0xf5cb2ba3, 0xf78d95fa, 0xf64fffcd,
    0xd9785d60, 0xd8ba3757, 0xdafc890e, 0xdb3ee339, 0xde71f5bc,
    0xdfb39f8b, 0xddf521d2, 0xdc374be5, 0xd76b0cd8, 0xd6a966ef,
    0xd4efd8b6, 0xd52db281, 0xd062a404, 0xd1a0ce33, 0xd3e6706a,
    0xd2241a5d, 0xc55efe10, 0xc49c9427, 0xc6da2a7e, 0xc7184049,
    0xc25756cc, 0xc3953cfb, 0xc1d382a2, 0xc011e895, 0xcb4dafa8,
    0xca8fc59f, 0xc8c97bc6, 0xc90b11f1, 0xcc440774, 0xcd866d43,
    0xcfc0d31a, 0xce02b92d, 0x91af9640, 0x906dfc77, 0x922b422e,
    0x93e92819, 0x96a63e9c, 0x976454ab, 0x9522eaf2, 0x94e080c5,
    0x9fbcc7f8, 0x9e7eadcf, 0x9c381396, 0x9dfa79a1, 0x98b56f24,
    0x99770513, 0x9b31bb4a, 0x9af3d17d, 0x8d893530, 0x8c4b5f07,
    0x8e0de15e, 0x8fcf8b69, 0x8a809dec, 0x8b42f7db, 0x89044982,
    0x88c623b5, 0x839a6488, 0x82580ebf, 0x801eb0e6, 0x81dcdad1,
    0x8493cc54, 0x8551a663, 0x8717183a, 0x86d5720d, 0xa9e2d0a0,
    0xa820ba97, 0xaa6604ce, 0xaba46ef9, 0xaeeb787c, 0xaf29124b,
    0xad6fac12, 0xacadc625, 0xa7f18118, 0xa633eb2f, 0xa4755576,
    0xa5b73f41, 0xa0f829c4, 0xa13a43f3, 0xa37cfdaa, 0xa2be979d,
    0xb5c473d0, 0xb40619e7, 0xb640a7be, 0xb782cd89, 0xb2cddb0c,
    0xb30fb13b, 0xb1490f62, 0xb08b6555, 0xbbd72268, 0xba15485f,
    0xb853f606, 0xb9919c31, 0xbcde8ab4, 0xbd1ce083, 0xbf5a5eda,
    0xbe9834ed},
   {0x00000000, 0x191b3141, 0x32366282, 0x2b2d53c3, 0x646cc504,
    0x7d77f445, 0x565aa786, 0x4f4196c7, 0xc8d98a08, 0xd1c2bb49,
    0xfaefe88a, 0xe3f4d9cb, 0xacb54f0c, 0xb5ae7e4d, 0x9e832d8e,
    0x87981ccf, 0x4ac21251, 0x53d92310, 0x78f470d3, 0x61ef4192,
    0x2eaed755, 0x37b5e614, 0x1c98b5d7, 0x05838496, 0x821b9859,
    0x9b00a918, 0xb02dfadb, 0xa936cb9a, 0xe6775d5d, 0xff6c6c1c,
    0xd4413fdf, 0xcd5a0e9e, 0x958424a2, 0x8c9f15e3, 0xa7b24620,
    0xbea97761, 0xf1e8e1a6, 0xe8f3d0e7, 0xc3de8324, 0xdac5b265,
    0x5d5daeaa, 0x44469feb, 0x6f6bcc28, 0x7670fd69, 0x39316bae,
    0x202a5aef, 0x0b07092c, 0x121c386d, 0xdf4636f3, 0xc65d07b2,
    0xed705471, 0xf46b6530, 0xbb2af3f7, 0xa231c2b6, 0x891c9175,
    0x9007a034, 0x179fbcfb, 0x0e848dba, 0x25a9de79, 0x3cb2ef38,
    0x73f379ff, 0x6ae848be, 0x41c51b7d, 0x58de2a3c, 0xf0794f05,
    0xe9627e44, 0xc24f2d87, 0xdb541cc6, 0x94158a01, 0x8d0ebb40,
    0xa623e883, 0xbf38d9c2, 0x38a0c50d, 0x21bbf44c, 0x0a96a78f,
    0x138d96ce, 0x5ccc0009, 0x45d73148, 0x6efa628b, 0x77e153ca,
    0xbabb5d54, 0xa3a06c15, 0x888d3fd6, 0x91960e97, 0xded79850,
    0xc7cca911, 0xece1fad2, 0xf5facb93, 0x7262d75c, 0x6b79e61d,
    0x4054b5de, 0x594f849f, 0x160e1258, 0x0f152319, 0x243870da,
    0x3d23419b, 0x65fd6ba7, 0x7ce65ae6, 0x57cb0925, 0x4ed03864,
    0x0191aea3, 0x188a9fe2, 0x33a7cc21, 0x2abcfd60, 0xad24e1af,
    0xb43fd0ee, 0x9f12832d, 0x8609b26c, 0xc94824ab, 0xd05315ea,
    0xfb7e4629, 0xe2657768, 0x2f3f79f6, 0x362448b7, 0x1d091b74,
    0x04122a35, 0x4b53bcf2, 0x52488db3, 0x7965de70, 0x607eef31,
    0xe7e6f3fe, 0xfefdc2bf, 0xd5d0917c, 0xcccba03d, 0x838a36fa,
    0x9a9107bb, 0xb1bc5478, 0xa8a76539, 0x3b83984b, 0x2298a90a,
    0x09b5fac9, 0x10aecb88, 0x5fef5d4f, 0x46f46c0e, 0x6dd93fcd,
    0x74c20e8c, 0xf35a1243, 0xea412302, 0xc16c70c1, 0xd8774180,
    0x9736d747, 0x8e2de606, 0xa500b5c5, 0xbc1b8484, 0x71418a1a,
    0x685abb5b, 0x4377e898, 0x5a6cd9d9, 0x152d4f1e, 0x0c367e5f,
    0x271b2d9c, 0x3e001cdd, 0xb9980012, 0xa0833153, 0x8bae6290,
    0x92b553d1, 0xddf4c516, 0xc4eff457, 0xefc2a794, 0xf6d996d5,
    0xae07bce9, 0xb71c8da8, 0x9c31de6b, 0x852aef2a, 0xca6b79ed,
    0xd37048ac, 0xf85d1b6f, 0xe1462a2e, 0x66de36e1, 0x7fc507a0,
    0x54e85463, 0x4df36522, 0x02b2f3e5, 0x1ba9c2a4, 0x30849167,
    0x299fa026, 0xe4c5aeb8, 0xfdde9ff9, 0xd6f3cc3a, 0xcfe8fd7b,
    0x80a96bbc, 0x99b25afd, 0xb29f093e, 0xab84387f, 0x2c1c24b0,
    0x350715f1, 0x1e2a4632, 0x07317773, 0x4870e1b4, 0x516bd0f5,
    0x7a468336, 0x635db277, 0xcbfad74e, 0xd2e1e60f, 0xf9ccb5cc,
    0xe0d7848d, 0xaf96124a, 0xb68d230b, 0x9da070c8, 0x84bb4189,
    0x03235d46, 0x1a386c07, 0x31153fc4, 0x280e0e85, 0x674f9842,
    0x7e54a903, 0x5579fac0, 0x4c62cb81, 0x8138c51f, 0x9823f45e,
    0xb30ea79d, 0xaa1596dc, 0xe554001b, 0xfc4f315a, 0xd7626299,
    0xce7953d8, 0x49e14f17, 0x50fa7e56, 0x7bd72d95, 0x62cc1cd4,
    0x2d8d8a13, 0x3496bb52, 0x1fbbe891, 0x06a0d9d0, 0x5e7ef3ec,
    0x4765c2ad, 0x6c48916e, 0x7553a02f, 0x3a1236e8, 0x230907a9,
    0x0824546a, 0x113f652b, 0x96a779e4, 0x8fbc48a5, 0xa4911b66,
    0xbd8a2a27, 0xf2cbbce0, 0xebd08da1, 0xc0fdde62, 0xd9e6ef23,
    0x14bce1bd, 0x0da7d0fc, 0x268a833f, 0x3f91b27e, 0x70d024b9,
    0x69cb15f8, 0x42e6463b, 0x5bfd777a, 0xdc656bb5, 0xc57e5af4,
    0xee530937, 0xf7483876, 0xb809aeb1, 0xa1129ff0, 0x8a3fcc33,
    0x9324fd72},
   {0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
    0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
    0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
    0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
    0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
    0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
    0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
    0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
    0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
    0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
    0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
    0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
    0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
    0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
    0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
    0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
    0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
    0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
    0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
    0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
    0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
    0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
    0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
    0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
    0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
    0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
    0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
    0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
    0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
    0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
    0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
    0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
    0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
    0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
    0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
    0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
    0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
    0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
    0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
    0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
    0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
    0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
    0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
    0x2d02ef8d}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x00000000, 0x96300777, 0x2c610eee, 0xba510999, 0x19c46d07,
    0x8ff46a70, 0x35a563e9, 0xa395649e, 0x3288db0e, 0xa4b8dc79,
    0x1ee9d5e0, 0x88d9d297, 0x2b4cb609, 0xbd7cb17e, 0x072db8e7,
    0x911dbf90, 0x6410b71d, 0xf220b06a, 0x4871b9f3, 0xde41be84,
    0x7dd4da1a, 0xebe4dd6d, 0x51b5d4f4, 0xc785d383, 0x56986c13,
    0xc0a86b64, 0x7af962fd, 0xecc9658a, 0x4f5c0114, 0xd96c0663,
    0x633d0ffa, 0xf50d088d, 0xc8206e3b, 0x5e10694c, 0xe44160d5,
    0x727167a2, 0xd1e4033c, 0x47d4044b, 0xfd850dd2, 0x6bb50aa5,
    0xfaa8b535, 0x6c98b242, 0xd6c9bbdb, 0x40f9bcac, 0xe36cd832,
    0x755cdf45, 0xcf0dd6dc, 0x593dd1ab, 0xac30d926, 0x3a00de51,
    0x8051d7c8, 0x1661d0bf, 0xb5f4b421, 0x23c4b356, 0x9995bacf,
    0x0fa5bdb8, 0x9eb80228, 0x0888055f, 0xb2d90cc6, 0x24e90bb1,
    0x877c6f2f, 0x114c6858, 0xab1d61c1, 0x3d2d66b6, 0x9041dc76,
    0x0671db01, 0xbc20d298, 0x2a10d5ef, 0x8985b171, 0x1fb5b606,
    0xa5e4bf9f, 0x33d4b8e8, 0xa2c90778, 0x34f9000f, 0x8ea80996,
    0x18980ee1, 0xbb0d6a7f, 0x2d3d6d08, 0x976c6491, 0x015c63e6,
    0xf4516b6b, 0x62616c1c, 0xd8306585, 0x4e0062f2, 0xed95066c,
    0x7ba5011b, 0xc1f40882, 0x57c40ff5, 0xc6d9b065, 0x50e9b712,
    0xeab8be8b, 0x7c88b9fc, 0xdf1ddd62, 0x492dda15, 0xf37cd38c,
    0x654cd4fb, 0x5861b24d, 0xce51b53a, 0x7400bca3, 0xe230bbd4,
    0x41a5df4a, 0xd795d83d, 0x6dc4d1a4, 0xfbf4d6d3, 0x6ae96943,
    0xfcd96e34, 0x468867ad, 0xd0b860da, 0x732d0444, 0xe51d0333,
    0x5f4c0aaa, 0xc97c0ddd, 0x3c710550, 0xaa410227, 0x10100bbe,
    0x86200cc9, 0x25b56857, 0xb3856f20, 0x09d466b9, 0x9fe461ce,
    0x0ef9de5e, 0x98c9d929, 0x2298d0b0, 0xb4a8d7c7, 0x173db359,
    0x810db42e, 0x3b5cbdb7, 0xad6cbac0, 0x2083b8ed, 0xb6b3bf9a,
    0x0ce2b603, 0x9ad2b174, 0x3947d5ea, 0xaf77d29d, 0x1526db04,
    0x8316dc73, 0x120b63e3, 0x843b6494, 0x3e6a6d0d, 0xa85a6a7a,
    0x0bcf0ee4, 0x9dff0993, 0x27ae000a, 0xb19e077d, 0x44930ff0,
    0xd2a30887, 0x68f2011e, 0xfec20669, 0x5d5762f7, 0xcb676580,
    0x71366c19, 0xe7066b6e, 0x761bd4fe, 0xe02bd389, 0x5a7ada10,
    0xcc4add67, 0x6fdfb9f9, 0xf9efbe8e, 0x43beb717, 0xd58eb060,
    0xe8a3d6d6, 0x7e93d1a1, 0xc4c2d838, 0x52f2df4f, 0xf167bbd1,
    0x6757bca6, 0xdd06b53f, 0x4b36b248, 0xda2b0dd8, 0x4c1b0aaf,
    0xf64a0336, 0x607a0441, 0xc3ef60df, 0x55df67a8, 0xef8e6e31,
    0x79be6946, 0x8cb361cb, 0x1a8366bc, 0xa0d26f25, 0x36e26852,
    0x95770ccc, 0x03470bbb, 0xb9160222, 0x2f260555, 0xbe3bbac5,
    0x280bbdb2, 0x925ab42b, 0x046ab35c, 0xa7ffd7c2, 0x31cfd0b5,
    0x8b9ed92c, 0x1daede5b, 0xb0c2649b, 0x26f263ec, 0x9ca36a75,
    0x0a936d02, 0xa906099c, 0x3f360eeb, 0x85670772, 0x13570005,
    0x824abf95, 0x147ab8e2, 0xae2bb17b, 0x381bb60c, 0x9b8ed292,
    0x0dbed5e5, 0xb7efdc7c, 0x21dfdb0b, 0xd4d2d386, 0x42e2d4f1,
    0xf8b3dd68, 0x6e83da1f, 0xcd16be81, 0x5b26b9f6, 0xe177b06f,
    0x7747b718, 0xe65a0888, 0x706a0fff, 0xca3b0666, 0x5c0b0111,
    0xff9e658f, 0x69ae62f8, 0xd3ff6b61, 0x45cf6c16, 0x78e20aa0,
    0xeed20dd7, 0x5483044e, 0xc2b30339, 0x612667a7, 0xf71660d0,
    0x4d476949, 0xdb776e3e, 0x4a6ad1ae, 0xdc5ad6d9, 0x660bdf40,
    0xf03bd837, 0x53aebca9, 0xc59ebbde, 0x7fcfb247, 0xe9ffb530,
    0x1cf2bdbd, 0x8ac2baca, 0x3093b353, 0xa6a3b424, 0x0536d0ba,
    0x9306d7cd, 0x2957de54, 0xbf67d923, 0x2e7a66b3, 0xb84a61c4,
    0x021b685d, 0x942b6f2a, 0x37be0bb4, 0xa18e0cc3, 0x1bdf055a,
    0x8def022d},
   {0x00000000, 0x41311b19, 0x82623632, 0xc3532d2b, 0x04c56c64,
    0x45f4777d, 0x86a75a56, 0xc796414f, 0x088ad9c8, 0x49bbc2d1,
    0x8ae8effa, 0xcbd9f4e3, 0x0c4fb5ac, 0x4d7eaeb5, 0x8e2d839e,
    0xcf1c9887, 0x5112c24a, 0x1023d953, 0xd370f478, 0x9241ef61,
    0x55d7ae2e, 0x14e6b537, 0xd7b5981c, 0x96848305, 0x59981b82,
    0x18a9009b, 0xdbfa2db0, 0x9acb36a9, 0x5d5d77e6, 0x1c6c6cff,
    0xdf3f41d4, 0x9e0e5acd, 0xa2248495, 0xe3159f8c, 0x2046b2a7,
    0x6177a9be, 0xa6e1e8f1, 0xe7d0f3e8, 0x2483dec3, 0x65b2c5da,
    0xaaae5d5d, 0xeb9f4644, 0x28cc6b6f, 0x69fd7076, 0xae6b3139,
    0xef5a2a20, 0x2c09070b, 0x6d381c12, 0xf33646df, 0xb2075dc6,
    0x715470ed, 0x30656bf4, 0xf7f32abb, 0xb6c231a2, 0x75911c89,
    0x34a00790, 0xfbbc9f17, 0xba8d840e, 0x79dea925, 0x38efb23c,
    0xff79f373, 0xbe48e86a, 0x7d1bc541, 0x3c2ade58, 0x054f79f0,
    0x447e62e9, 0x872d4fc2, 0xc61c54db, 0x018a1594, 0x40bb0e8d,
    0x83e823a6, 0xc2d938bf, 0x0dc5a038, 0x4cf4bb21, 0x8fa7960a,
    0xce968d13, 0x0900cc5c, 0x4831d745, 0x8b62fa6e, 0xca53e177,
    0x545dbbba, 0x156ca0a3, 0xd63f8d88, 0x970e9691, 0x5098d7de,
    0x11a9ccc7, 0xd2fae1ec, 0x93cbfaf5, 0x5cd76272, 0x1de6796b,
    0xdeb55440, 0x9f844f59, 0x58120e16, 0x1923150f, 0xda703824,
    0x9b41233d, 0xa76bfd65, 0xe65ae67c, 0x2509cb57, 0x6438d04e,
    0xa3ae9101, 0xe29f8a18, 0x21cca733, 0x60fdbc2a, 0xafe124ad,
    0xeed03fb4, 0x2d83129f, 0x6cb20986, 0xab2448c9, 0xea1553d0,
    0x29467efb, 0x687765e2, 0xf6793f2f, 0xb7482436, 0x741b091d,
    0x352a1204, 0xf2bc534b, 0xb38d4852, 0x70de6579, 0x31ef7e60,
    0xfef3e6e7, 0xbfc2fdfe, 0x7c91d0d5, 0x3da0cbcc, 0xfa368a83,
    0xbb07919a, 0x7854bcb1, 0x3965a7a8, 0x4b98833b, 0x0aa99822,
    0xc9fab509, 0x88cbae10, 0x4f5def5f, 0x0e6cf446, 0xcd3fd96d,
    0x8c0ec274, 0x43125af3, 0x022341ea, 0xc1706cc1, 0x804177d8,
    0x47d73697, 0x06e62d8e, 0xc5b500a5, 0x84841bbc, 0x1a8a4171,
    0x5bbb5a68, 0x98e87743, 0xd9d96c5a, 0x1e4f2d15, 0x5f7e360c,
    0x9c2d1b27, 0xdd1c003e, 0x120098b9, 0x533183a0, 0x9062ae8b,
    0xd153b592, 0x16c5f4dd, 0x57f4efc4, 0x94a7c2ef, 0xd596d9f6,
    0xe9bc07ae, 0xa88d1cb7, 0x6bde319c, 0x2aef2a85, 0xed796bca,
    0xac4870d3, 0x6f1b5df8, 0x2e2a46e1, 0xe136de66, 0xa007c57f,
    0x6354e854, 0x2265f34d, 0xe5f3b202, 0xa4c2a91b, 0x67918430,
    0x26a09f29, 0xb8aec5e4, 0xf99fdefd, 0x3accf3d6, 0x7bfde8cf,
    0xbc6ba980, 0xfd5ab299, 0x3e099fb2, 0x7f3884ab, 0xb0241c2c,
    0xf1150735, 0x32462a1e, 0x73773107, 0xb4e17048, 0xf5d06b51,
    0x3683467a, 0x77b25d63, 0x4ed7facb, 0x0fe6e1d2, 0xccb5ccf9,
    0x8d84d7e0, 0x4a1296af, 0x0b238db6, 0xc870a09d, 0x8941bb84,
    0x465d2303, 0x076c381a, 0xc43f1531, 0x850e0e28, 0x42984f67,
    0x03a9547e, 0xc0fa7955, 0x81cb624c, 0x1fc53881, 0x5ef42398,
    0x9da70eb3, 0xdc9615aa, 0x1b0054e5, 0x5a314ffc, 0x996262d7,
    0xd85379ce, 0x174fe149, 0x567efa50, 0x952dd77b, 0xd41ccc62,
    0x138a8d2d, 0x52bb9634, 0x91e8bb1f, 0xd0d9a006, 0xecf37e5e,
    0xadc26547, 0x6e91486c, 0x2fa05375, 0xe836123a, 0xa9070923,
    0x6a542408, 0x2b653f11, 0xe479a796, 0xa548bc8f, 0x661b91a4,
    0x272a8abd, 0xe0bccbf2, 0xa18dd0eb, 0x62defdc0, 0x23efe6d9,
    0xbde1bc14, 0xfcd0a70d, 0x3f838a26, 0x7eb2913f, 0xb924d070,
    0xf815cb69, 0x3b46e642, 0x7a77fd5b, 0xb56b65dc, 0xf45a7ec5,
    0x370953ee, 0x763848f7, 0xb1ae09b8, 0xf09f12a1, 0x33cc3f8a,
    0x72fd2493},
   {0x00000000, 0x376ac201, 0x6ed48403, 0x59be4602, 0xdca80907,
    0xebc2cb06, 0xb27c8d04, 0x85164f05, 0xb851130e, 0x8f3bd10f,
    0xd685970d, 0xe1ef550c, 0x64f91a09, 0x5393d808, 0x0a2d9e0a,
    0x3d475c0b, 0x70a3261c, 0x47c9e41d, 0x1e77a21f, 0x291d601e,
    0xac0b2f1b, 0x9b61ed1a, 0xc2dfab18, 0xf5b56919, 0xc8f23512,
    0xff98f713, 0xa626b111, 0x914c7310, 0x145a3c15, 0x2330fe14,
    0x7a8eb816, 0x4de47a17, 0xe0464d38, 0xd72c8f39, 0x8e92c93b,
    0xb9f80b3a, 0x3cee443f, 0x0b84863e, 0x523ac03c, 0x6550023d,
    0x58175e36, 0x6f7d9c37, 0x36c3da35, 0x01a91834, 0x84bf5731,
    0xb3d59530, 0xea6bd332, 0xdd011133, 0x90e56b24, 0xa78fa925,
    0xfe31ef27, 0xc95b2d26, 0x4c4d6223, 0x7b27a022, 0x2299e620,
    0x15f32421, 0x28b4782a, 0x1fdeba2b, 0x4660fc29, 0x710a3e28,
    0xf41c712d, 0xc376b32c, 0x9ac8f52e, 0xada2372f, 0xc08d9a70,
    0xf7e75871, 0xae591e73, 0x9933dc72, 0x1c259377, 0x2b4f5176,
    0x72f11774, 0x459bd575, 0x78dc897e, 0x4fb64b7f, 0x16080d7d,
    0x2162cf7c, 0xa4748079, 0x931e4278, 0xcaa0047a, 0xfdcac67b,
    0xb02ebc6c, 0x87447e6d, 0xdefa386f, 0xe990fa6e, 0x6c86b56b,
    0x5bec776a, 0x02523168, 0x3538f369, 0x087faf62, 0x3f156d63,
    0x66ab2b61, 0x51c1e960, 0xd4d7a665, 0xe3bd6464, 0xba032266,
    0x8d69e067, 0x20cbd748, 0x17a11549, 0x4e1f534b, 0x7975914a,
    0xfc63de4f, 0xcb091c4e, 0x92b75a4c, 0xa5dd984d, 0x989ac446,
    0xaff00647, 0xf64e4045, 0xc1248244, 0x4432cd41, 0x73580f40,
    0x2ae64942, 0x1d8c8b43, 0x5068f154, 0x67023355, 0x3ebc7557,
    0x09d6b756, 0x8cc0f853, 0xbbaa3a52, 0xe2147c50, 0xd57ebe51,
    0xe839e25a, 0xdf53205b, 0x86ed6659, 0xb187a458, 0x3491eb5d,
    0x03fb295c, 0x5a456f5e, 0x6d2fad5f, 0x801b35e1, 0xb771f7e0,
    0xeecfb1e2, 0xd9a573e3, 0x5cb33ce6, 0x6bd9fee7, 0x3267b8e5,
    0x050d7ae4, 0x384a26ef, 0x0f20e4ee, 0x569ea2ec, 0x61f460ed,
    0xe4e22fe8, 0xd388ede9, 0x8a36abeb, 0xbd5c69ea, 0xf0b813fd,
    0xc7d2d1fc, 0x9e6c97fe, 0xa90655ff, 0x2c101afa, 0x1b7ad8fb,
    0x42c49ef9, 0x75ae5cf8, 0x48e900f3, 0x7f83c2f2, 0x263d84f0,
    0x115746f1, 0x944109f4, 0xa32bcbf5, 0xfa958df7, 0xcdff4ff6,
    0x605d78d9, 0x5737bad8, 0x0e89fcda, 0x39e33edb, 0xbcf571de,
    0x8b9fb3df, 0xd221f5dd, 0xe54b37dc, 0xd80c6bd7, 0xef66a9d6,
    0xb6d8efd4, 0x81b22dd5, 0x04a462d0, 0x33cea0d1, 0x6a70e6d3,
    0x5d1a24d2, 0x10fe5ec5, 0x27949cc4, 0x7e2adac6, 0x494018c7,
    0xcc5657c2, 0xfb3c95c3, 0xa282d3c1, 0x95e811c0, 0xa8af4dcb,
    0x9fc58fca, 0xc67bc9c8, 0xf1110bc9, 0x740744cc, 0x436d86cd,
    0x1ad3c0cf, 0x2db902ce, 0x4096af91, 0x77fc6d90, 0x2e422b92,
    0x1928e993, 0x9c3ea696, 0xab546497, 0xf2ea2295, 0xc580e094,
    0xf8c7bc9f, 0xcfad7e9e, 0x9613389c, 0xa179fa9d, 0x246fb598,
    0x13057799, 0x4abb319b, 0x7dd1f39a, 0x3035898d, 0x075f4b8c,
    0x5ee10d8e, 0x698bcf8f, 0xec9d808a, 0xdbf7428b, 0x82490489,
    0xb523c688, 0x88649a83, 0xbf0e5882, 0xe6b01e80, 0xd1dadc81,
    0x54cc9384, 0x63a65185, 0x3a181787, 0x0d72d586, 0xa0d0e2a9,
    0x97ba20a8, 0xce0466aa, 0xf96ea4ab, 0x7c78ebae, 0x4b1229af,
    0x12ac6fad, 0x25c6adac, 0x1881f1a7, 0x2feb33a6, 0x765575a4,
    0x413fb7a5, 0xc429f8a0, 0xf3433aa1, 0xaafd7ca3, 0x9d97bea2,
    0xd073c4b5, 0xe71906b4, 0xbea740b6, 0x89cd82b7, 0x0cdbcdb2,
    0x3bb10fb3, 0x620f49b1, 0x55658bb0, 0x6822d7bb, 0x5f4815ba,
    0x06f653b8, 0x319c91b9, 0xb48adebc, 0x83e01cbd, 0xda5e5abf,
    0xed3498be},
   {0x00000000, 0x6567bcb8, 0x8bc809aa, 0xeeafb512, 0x5797628f,
    0x32f0de37, 0xdc5f6b25, 0xb938d79d, 0xef28b4c5, 0x8a4f087d,
    0x64e0bd6f, 0x018701d7, 0xb8bfd64a, 0xddd86af2, 0x3377dfe0,
    0x56106358, 0x9f571950, 0xfa30a5e8, 0x149f10fa, 0x71f8ac42,
    0xc8c07bdf, 0xada7c767, 0x43087275, 0x266fcecd, 0x707fad95,
    0x1518112d, 0xfbb7a43f, 0x9ed01887, 0x27e8cf1a, 0x428f73a2,
    0xac20c6b0, 0xc9477a08, 0x3eaf32a0, 0x5bc88e18, 0xb5673b0a,
    0xd00087b2, 0x6938502f, 0x0c5fec97, 0xe2f05985, 0x8797e53d,
    0xd1878665, 0xb4e03add, 0x5a4f8fcf, 0x3f283377, 0x8610e4ea,
    0xe3775852, 0x0dd8ed40, 0x68bf51f8, 0xa1f82bf0, 0xc49f9748,
    0x2a30225a, 0x4f579ee2, 0xf66f497f, 0x9308f5c7, 0x7da740d5,
    0x18c0fc6d, 0x4ed09f35, 0x2bb7238d, 0xc518969f, 0xa07f2a27,
    0x1947fdba, 0x7c204102, 0x928ff410, 0xf7e848a8, 0x3d58149b,
    0x583fa823, 0xb6901d31, 0xd3f7a189, 0x6acf7614, 0x0fa8caac,
    0xe1077fbe, 0x8460c306, 0xd270a05e, 0xb7171ce6, 0x59b8a9f4,
    0x3cdf154c, 0x85e7c2d1, 0xe0807e69, 0x0e2fcb7b, 0x6b4877c3,
    0xa20f0dcb, 0xc768b173, 0x29c70461, 0x4ca0b8d9, 0xf5986f44,
    0x90ffd3fc, 0x7e5066ee, 0x1b37da56, 0x4d27b90e, 0x284005b6,
    0xc6efb0a4, 0xa3880c1c, 0x1ab0db81, 0x7fd76739, 0x9178d22b,
    0xf41f6e93, 0x03f7263b, 0x66909a83, 0x883f2f91, 0xed589329,
    0x546044b4, 0x3107f80c, 0xdfa84d1e, 0xbacff1a6, 0xecdf92fe,
    0x89b82e46, 0x67179b54, 0x027027ec, 0xbb48f071, 0xde2f4cc9,
    0x3080f9db, 0x55e74563, 0x9ca03f6b, 0xf9c783d3, 0x176836c1,
    0x720f8a79, 0xcb375de4, 0xae50e15c, 0x40ff544e, 0x2598e8f6,
    0x73888bae, 0x16ef3716, 0xf8408204, 0x9d273ebc, 0x241fe921,
    0x41785599, 0xafd7e08b, 0xcab05c33, 0x3bb659ed, 0x5ed1e555,
    0xb07e5047, 0xd519ecff, 0x6c213b62, 0x094687da, 0xe7e932c8,
    0x828e8e70, 0xd49eed28, 0xb1f95190, 0x5f56e482, 0x3a31583a,
    0x83098fa7, 0xe66e331f, 0x08c1860d, 0x6da63ab5, 0xa4e140bd,
    0xc186fc05, 0x2f294917, 0x4a4ef5af, 0xf3762232, 0x96119e8a,
    0x78be2b98, 0x1dd99720, 0x4bc9f478, 0x2eae48c0, 0xc001fdd2,
    0xa566416a, 0x1c5e96f7, 0x79392a4f, 0x97969f5d, 0xf2f123e5,
    0x05196b4d, 0x607ed7f5, 0x8ed162e7, 0xebb6de5f, 0x528e09c2,
    0x37e9b57a, 0xd9460068, 0xbc21bcd0, 0xea31df88, 0x8f566330,
    0x61f9d622, 0x049e6a9a, 0xbda6bd07, 0xd8c101bf, 0x366eb4ad,
    0x53090815, 0x9a4e721d, 0xff29cea5, 0x11867bb7, 0x74e1c70f,
    0xcdd91092, 0xa8beac2a, 0x46111938, 0x2376a580, 0x7566c6d8,
    0x10017a60, 0xfeaecf72, 0x9bc973ca, 0x22f1a457, 0x479618ef,
    0xa939adfd, 0xcc5e1145, 0x06ee4d76, 0x6389f1ce, 0x8d2644dc,
    0xe841f864, 0x51792ff9, 0x341e9341, 0xdab12653, 0xbfd69aeb,
    0xe9c6f9b3, 0x8ca1450b, 0x620ef019, 0x07694ca1, 0xbe519b3c,
    0xdb362784, 0x35999296, 0x50fe2e2e, 0x99b95426, 0xfcdee89e,
    0x12715d8c, 0x7716e134, 0xce2e36a9, 0xab498a11, 0x45e63f03,
    0x208183bb, 0x7691e0e3, 0x13f65c5b, 0xfd59e949, 0x983e55f1,
    0x2106826c, 0x44613ed4, 0xaace8bc6, 0xcfa9377e, 0x38417fd6,
    0x5d26c36e, 0xb389767c, 0xd6eecac4, 0x6fd61d59, 0x0ab1a1e1,
    0xe41e14f3, 0x8179a84b, 0xd769cb13, 0xb20e77ab, 0x5ca1c2b9,
    0x39c67e01, 0x80fea99c, 0xe5991524, 0x0b36a036, 0x6e511c8e,
    0xa7166686, 0xc271da3e, 0x2cde6f2c, 0x49b9d394, 0xf0810409,
    0x95e6b8b1, 0x7b490da3, 0x1e2eb11b, 0x483ed243, 0x2d596efb,
    0xc3f6dbe9, 0xa6916751, 0x1fa9b0cc, 0x7ace0c74, 0x9461b966,
    0xf10605de}};

#endif

#endif

#if N == 2

#if W == 8

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xae689191, 0x87a02563, 0x29c8b4f2, 0xd4314c87,
    0x7a59dd16, 0x539169e4, 0xfdf9f875, 0x73139f4f, 0xdd7b0ede,
    0xf4b3ba2c, 0x5adb2bbd, 0xa722d3c8, 0x094a4259, 0x2082f6ab,
    0x8eea673a, 0xe6273e9e, 0x484faf0f, 0x61871bfd, 0xcfef8a6c,
    0x32167219, 0x9c7ee388, 0xb5b6577a, 0x1bdec6eb, 0x9534a1d1,
    0x3b5c3040, 0x129484b2, 0xbcfc1523, 0x4105ed56, 0xef6d7cc7,
    0xc6a5c835, 0x68cd59a4, 0x173f7b7d, 0xb957eaec, 0x909f5e1e,
    0x3ef7cf8f, 0xc30e37fa, 0x6d66a66b, 0x44ae1299, 0xeac68308,
    0x642ce432, 0xca4475a3, 0xe38cc151, 0x4de450c0, 0xb01da8b5,
    0x1e753924, 0x37bd8dd6, 0x99d51c47, 0xf11845e3, 0x5f70d472,
    0x76b86080, 0xd8d0f111, 0x25290964, 0x8b4198f5, 0xa2892c07,
    0x0ce1bd96, 0x820bdaac, 0x2c634b3d, 0x05abffcf, 0xabc36e5e,
    0x563a962b, 0xf85207ba, 0xd19ab348, 0x7ff222d9, 0x2e7ef6fa,
    0x8016676b, 0xa9ded399, 0x07b64208, 0xfa4fba7d, 0x54272bec,
    0x7def9f1e, 0xd3870e8f, 0x5d6d69b5, 0xf305f824, 0xdacd4cd6,
    0x74a5dd47, 0x895c2532, 0x2734b4a3, 0x0efc0051, 0xa09491c0,
    0xc859c864, 0x663159f5, 0x4ff9ed07, 0xe1917c96, 0x1c6884e3,
    0xb2001572, 0x9bc8a180, 0x35a03011, 0xbb4a572b, 0x1522c6ba,
    0x3cea7248, 0x9282e3d9, 0x6f7b1bac, 0xc1138a3d, 0xe8db3ecf,
    0x46b3af5e, 0x39418d87, 0x97291c16, 0xbee1a8e4, 0x10893975,
    0xed70c100, 0x43185091, 0x6ad0e463, 0xc4b875f2, 0x4a5212c8,
    0xe43a8359, 0xcdf237ab, 0x639aa63a, 0x9e635e4f, 0x300bcfde,
    0x19c37b2c, 0xb7abeabd, 0xdf66b319, 0x710e2288, 0x58c6967a,
    0xf6ae07eb, 0x0b57ff9e, 0xa53f6e0f, 0x8cf7dafd, 0x229f4b6c,
    0xac752c56, 0x021dbdc7, 0x2bd50935, 0x85bd98a4, 0x784460d1,
    0xd62cf140, 0xffe445b2, 0x518cd423, 0x5cfdedf4, 0xf2957c65,
    0xdb5dc897, 0x75355906, 0x88cca173, 0x26a430e2, 0x0f6c8410,
    0xa1041581, 0x2fee72bb, 0x8186e32a, 0xa84e57d8, 0x0626c649,
    0xfbdf3e3c, 0x55b7afad, 0x7c7f1b5f, 0xd2178ace, 0xbadad36a,
    0x14b242fb, 0x3d7af609, 0x93126798, 0x6eeb9fed, 0xc0830e7c,
    0xe94bba8e, 0x47232b1f, 0xc9c94c25, 0x67a1ddb4, 0x4e696946,
    0xe001f8d7, 0x1df800a2, 0xb3909133, 0x9a5825c1, 0x3430b450,
    0x4bc29689, 0xe5aa0718, 0xcc62b3ea, 0x620a227b, 0x9ff3da0e,
    0x319b4b9f, 0x1853ff6d, 0xb63b6efc, 0x38d109c6, 0x96b99857,
    0xbf712ca5, 0x1119bd34, 0xece04541, 0x4288d4d0, 0x6b406022,
    0xc528f1b3, 0xade5a817, 0x038d3986, 0x2a458d74, 0x842d1ce5,
    0x79d4e490, 0xd7bc7501, 0xfe74c1f3, 0x501c5062, 0xdef63758,
    0x709ea6c9, 0x5956123b, 0xf73e83aa, 0x0ac77bdf, 0xa4afea4e,
    0x8d675ebc, 0x230fcf2d, 0x72831b0e, 0xdceb8a9f, 0xf5233e6d,
    0x5b4baffc, 0xa6b25789, 0x08dac618, 0x211272ea, 0x8f7ae37b,
    0x01908441, 0xaff815d0, 0x8630a122, 0x285830b3, 0xd5a1c8c6,
    0x7bc95957, 0x5201eda5, 0xfc697c34, 0x94a42590, 0x3accb401,
    0x130400f3, 0xbd6c9162, 0x40956917, 0xeefdf886, 0xc7354c74,
    0x695ddde5, 0xe7b7badf, 0x49df2b4e, 0x60179fbc, 0xce7f0e2d,
    0x3386f658, 0x9dee67c9, 0xb426d33b, 0x1a4e42aa, 0x65bc6073,
    0xcbd4f1e2, 0xe21c4510, 0x4c74d481, 0xb18d2cf4, 0x1fe5bd65,
    0x362d0997, 0x98459806, 0x16afff3c, 0xb8c76ead, 0x910fda5f,
    0x3f674bce, 0xc29eb3bb, 0x6cf6222a, 0x453e96d8, 0xeb560749,
    0x839b5eed, 0x2df3cf7c, 0x043b7b8e, 0xaa53ea1f, 0x57aa126a,
    0xf9c283fb, 0xd00a3709, 0x7e62a698, 0xf088c1a2, 0x5ee05033,
    0x7728e4c1, 0xd9407550, 0x24b98d25, 0x8ad11cb4, 0xa319a846,
    0x0d7139d7},
   {0x00000000, 0xb9fbdbe8, 0xa886b191, 0x117d6a79, 0x8a7c6563,
    0x3387be8b, 0x22fad4f2, 0x9b010f1a, 0xcf89cc87, 0x7672176f,
    0x670f7d16, 0xdef4a6fe, 0x45f5a9e4, 0xfc0e720c, 0xed731875,
    0x5488c39d, 0x44629f4f, 0xfd9944a7, 0xece42ede, 0x551ff536,
    0xce1efa2c, 0x77e521c4, 0x66984bbd, 0xdf639055, 0x8beb53c8,
    0x32108820, 0x236de259, 0x9a9639b1, 0x019736ab, 0xb86ced43,
    0xa911873a, 0x10ea5cd2, 0x88c53e9e, 0x313ee576, 0x20438f0f,
    0x99b854e7, 0x02b95bfd, 0xbb428015, 0xaa3fea6c, 0x13c43184,
    0x474cf219, 0xfeb729f1, 0xefca4388, 0x56319860, 0xcd30977a,
    0x74cb4c92, 0x65b626eb, 0xdc4dfd03, 0xcca7a1d1, 0x755c7a39,
    0x64211040, 0xdddacba8, 0x46dbc4b2, 0xff201f5a, 0xee5d7523,
    0x57a6aecb, 0x032e6d56, 0xbad5b6be, 0xaba8dcc7, 0x1253072f,
    0x89520835, 0x30a9d3dd, 0x21d4b9a4, 0x982f624c, 0xcafb7b7d,
    0x7300a095, 0x627dcaec, 0xdb861104, 0x40871e1e, 0xf97cc5f6,
    0xe801af8f, 0x51fa7467, 0x0572b7fa, 0xbc896c12, 0xadf4066b,
    0x140fdd83, 0x8f0ed299, 0x36f50971, 0x27886308, 0x9e73b8e0,
    0x8e99e432, 0x37623fda, 0x261f55a3, 0x9fe48e4b, 0x04e58151,
    0xbd1e5ab9, 0xac6330c0, 0x1598eb28, 0x411028b5, 0xf8ebf35d,
    0xe9969924, 0x506d42cc, 0xcb6c4dd6, 0x7297963e, 0x63eafc47,
    0xda1127af, 0x423e45e3, 0xfbc59e0b, 0xeab8f472, 0x53432f9a,
    0xc8422080, 0x71b9fb68, 0x60c49111, 0xd93f4af9, 0x8db78964,
    0x344c528c, 0x253138f5, 0x9ccae31d, 0x07cbec07, 0xbe3037ef,
    0xaf4d5d96, 0x16b6867e, 0x065cdaac, 0xbfa70144, 0xaeda6b3d,
    0x1721b0d5, 0x8c20bfcf, 0x35db6427, 0x24a60e5e, 0x9d5dd5b6,
    0xc9d5162b, 0x702ecdc3, 0x6153a7ba, 0xd8a87c52, 0x43a97348,
    0xfa52a8a0, 0xeb2fc2d9, 0x52d41931, 0x4e87f0bb, 0xf77c2b53,
    0xe601412a, 0x5ffa9ac2, 0xc4fb95d8, 0x7d004e30, 0x6c7d2449,
    0xd586ffa1, 0x810e3c3c, 0x38f5e7d4, 0x29888dad, 0x90735645,
    0x0b72595f, 0xb28982b7, 0xa3f4e8ce, 0x1a0f3326, 0x0ae56ff4,
    0xb31eb41c, 0xa263de65, 0x1b98058d, 0x80990a97, 0x3962d17f,
    0x281fbb06, 0x91e460ee, 0xc56ca373, 0x7c97789b, 0x6dea12e2,
    0xd411c90a, 0x4f10c610, 0xf6eb1df8, 0xe7967781, 0x5e6dac69,
    0xc642ce25, 0x7fb915cd, 0x6ec47fb4, 0xd73fa45c, 0x4c3eab46,
    0xf5c570ae, 0xe4b81ad7, 0x5d43c13f, 0x09cb02a2, 0xb030d94a,
    0xa14db333, 0x18b668db, 0x83b767c1, 0x3a4cbc29, 0x2b31d650,
    0x92ca0db8, 0x8220516a, 0x3bdb8a82, 0x2aa6e0fb, 0x935d3b13,
    0x085c3409, 0xb1a7efe1, 0xa0da8598, 0x19215e70, 0x4da99ded,
    0xf4524605, 0xe52f2c7c, 0x5cd4f794, 0xc7d5f88e, 0x7e2e2366,
    0x6f53491f, 0xd6a892f7, 0x847c8bc6, 0x3d87502e, 0x2cfa3a57,
    0x9501e1bf, 0x0e00eea5, 0xb7fb354d, 0xa6865f34, 0x1f7d84dc,
    0x4bf54741, 0xf20e9ca9, 0xe373f6d0, 0x5a882d38, 0xc1892222,
    0x7872f9ca, 0x690f93b3, 0xd0f4485b, 0xc01e1489, 0x79e5cf61,
    0x6898a518, 0xd1637ef0, 0x4a6271ea, 0xf399aa02, 0xe2e4c07b,
    0x5b1f1b93, 0x0f97d80e, 0xb66c03e6, 0xa711699f, 0x1eeab277,
    0x85ebbd6d, 0x3c106685, 0x2d6d0cfc, 0x9496d714, 0x0cb9b558,
    0xb5426eb0, 0xa43f04c9, 0x1dc4df21, 0x86c5d03b, 0x3f3e0bd3,
    0x2e4361aa, 0x97b8ba42, 0xc33079df, 0x7acba237, 0x6bb6c84e,
    0xd24d13a6, 0x494c1cbc, 0xf0b7c754, 0xe1caad2d, 0x583176c5,
    0x48db2a17, 0xf120f1ff, 0xe05d9b86, 0x59a6406e, 0xc2a74f74,
    0x7b5c949c, 0x6a21fee5, 0xd3da250d, 0x8752e690, 0x3ea93d78,
    0x2fd45701, 0x962f8ce9, 0x0d2e83f3, 0xb4d5581b, 0xa5a83262,
    0x1c53e98a},
   {0x00000000, 0x9d0fe176, 0xe16ec4ad, 0x7c6125db, 0x19ac8f1b,
    0x84a36e6d, 0xf8c24bb6, 0x65cdaac0, 0x33591e36, 0xae56ff40,
    0xd237da9b, 0x4f383bed, 0x2af5912d, 0xb7fa705b, 0xcb9b5580,
    0x5694b4f6, 0x66b23c6c, 0xfbbddd1a, 0x87dcf8c1, 0x1ad319b7,
    0x7f1eb377, 0xe2115201, 0x9e7077da, 0x037f96ac, 0x55eb225a,
    0xc8e4c32c, 0xb485e6f7, 0x298a0781, 0x4c47ad41, 0xd1484c37,
    0xad2969ec, 0x3026889a, 0xcd6478d8, 0x506b99ae, 0x2c0abc75,
    0xb1055d03, 0xd4c8f7c3, 0x49c716b5, 0x35a6336e, 0xa8a9d218,
    0xfe3d66ee, 0x63328798, 0x1f53a243, 0x825c4335, 0xe791e9f5,
    0x7a9e0883, 0x06ff2d58, 0x9bf0cc2e, 0xabd644b4, 0x36d9a5c2,
    0x4ab88019, 0xd7b7616f, 0xb27acbaf, 0x2f752ad9, 0x53140f02,
    0xce1bee74, 0x988f5a82, 0x0580bbf4, 0x79e19e2f, 0xe4ee7f59,
    0x8123d599, 0x1c2c34ef, 0x604d1134, 0xfd42f042, 0x41b9f7f1,
    0xdcb61687, 0xa0d7335c, 0x3dd8d22a, 0x581578ea, 0xc51a999c,
    0xb97bbc47, 0x24745d31, 0x72e0e9c7, 0xefef08b1, 0x938e2d6a,
    0x0e81cc1c, 0x6b4c66dc, 0xf64387aa, 0x8a22a271, 0x172d4307,
    0x270bcb9d, 0xba042aeb, 0xc6650f30, 0x5b6aee46, 0x3ea74486,
    0xa3a8a5f0, 0xdfc9802b, 0x42c6615d, 0x1452d5ab, 0x895d34dd,
    0xf53c1106, 0x6833f070, 0x0dfe5ab0, 0x90f1bbc6, 0xec909e1d,
    0x719f7f6b, 0x8cdd8f29, 0x11d26e5f, 0x6db34b84, 0xf0bcaaf2,
    0x95710032, 0x087ee144, 0x741fc49f, 0xe91025e9, 0xbf84911f,
    0x228b7069, 0x5eea55b2, 0xc3e5b4c4, 0xa6281e04, 0x3b27ff72,
    0x4746daa9, 0xda493bdf, 0xea6fb345, 0x77605233, 0x0b0177e8,
    0x960e969e, 0xf3c33c5e, 0x6eccdd28, 0x12adf8f3, 0x8fa21985,
    0xd936ad73, 0x44394c05, 0x385869de, 0xa55788a8, 0xc09a2268,
    0x5d95c31e, 0x21f4e6c5, 0xbcfb07b3, 0x8373efe2, 0x1e7c0e94,
    0x621d2b4f, 0xff12ca39, 0x9adf60f9, 0x07d0818f, 0x7bb1a454,
    0xe6be4522, 0xb02af1d4, 0x2d2510a2, 0x51443579, 0xcc4bd40f,
    0xa9867ecf, 0x34899fb9, 0x48e8ba62, 0xd5e75b14, 0xe5c1d38e,
    0x78ce32f8, 0x04af1723, 0x99a0f655, 0xfc6d5c95, 0x6162bde3,
    0x1d039838, 0x800c794e, 0xd698cdb8, 0x4b972cce, 0x37f60915,
    0xaaf9e863, 0xcf3442a3, 0x523ba3d5, 0x2e5a860e, 0xb3556778,
    0x4e17973a, 0xd318764c, 0xaf795397, 0x3276b2e1, 0x57bb1821,
    0xcab4f957, 0xb6d5dc8c, 0x2bda3dfa, 0x7d4e890c, 0xe041687a,
    0x9c204da1, 0x012facd7, 0x64e20617, 0xf9ede761, 0x858cc2ba,
    0x188323cc, 0x28a5ab56, 0xb5aa4a20, 0xc9cb6ffb, 0x54c48e8d,
    0x3109244d, 0xac06c53b, 0xd067e0e0, 0x4d680196, 0x1bfcb560,
    0x86f35416, 0xfa9271cd, 0x679d90bb, 0x02503a7b, 0x9f5fdb0d,
    0xe33efed6, 0x7e311fa0, 0xc2ca1813, 0x5fc5f965, 0x23a4dcbe,
    0xbeab3dc8, 0xdb669708, 0x4669767e, 0x3a0853a5, 0xa707b2d3,
    0xf1930625, 0x6c9ce753, 0x10fdc288, 0x8df223fe, 0xe83f893e,
    0x75306848, 0x09514d93, 0x945eace5, 0xa478247f, 0x3977c509,
    0x4516e0d2, 0xd81901a4, 0xbdd4ab64, 0x20db4a12, 0x5cba6fc9,
    0xc1b58ebf, 0x97213a49, 0x0a2edb3f, 0x764ffee4, 0xeb401f92,
    0x8e8db552, 0x13825424, 0x6fe371ff, 0xf2ec9089, 0x0fae60cb,
    0x92a181bd, 0xeec0a466, 0x73cf4510, 0x1602efd0, 0x8b0d0ea6,
    0xf76c2b7d, 0x6a63ca0b, 0x3cf77efd, 0xa1f89f8b, 0xdd99ba50,
    0x40965b26, 0x255bf1e6, 0xb8541090, 0xc435354b, 0x593ad43d,
    0x691c5ca7, 0xf413bdd1, 0x8872980a, 0x157d797c, 0x70b0d3bc,
    0xedbf32ca, 0x91de1711, 0x0cd1f667, 0x5a454291, 0xc74aa3e7,
    0xbb2b863c, 0x2624674a, 0x43e9cd8a, 0xdee62cfc, 0xa2870927,
    0x3f88e851},
   {0x00000000, 0xdd96d985, 0x605cb54b, 0xbdca6cce, 0xc0b96a96,
    0x1d2fb313, 0xa0e5dfdd, 0x7d730658, 0x5a03d36d, 0x87950ae8,
    0x3a5f6626, 0xe7c9bfa3, 0x9abab9fb, 0x472c607e, 0xfae60cb0,
    0x2770d535, 0xb407a6da, 0x69917f5f, 0xd45b1391, 0x09cdca14,
    0x74becc4c, 0xa92815c9, 0x14e27907, 0xc974a082, 0xee0475b7,
    0x3392ac32, 0x8e58c0fc, 0x53ce1979, 0x2ebd1f21, 0xf32bc6a4,
    0x4ee1aa6a, 0x937773ef, 0xb37e4bf5, 0x6ee89270, 0xd322febe,
    0x0eb4273b, 0x73c72163, 0xae51f8e6, 0x139b9428, 0xce0d4dad,
    0xe97d9898, 0x34eb411d, 0x89212dd3, 0x54b7f456, 0x29c4f20e,
    0xf4522b8b, 0x49984745, 0x940e9ec0, 0x0779ed2f, 0xdaef34aa,
    0x67255864, 0xbab381e1, 0xc7c087b9, 0x1a565e3c, 0xa79c32f2,
    0x7a0aeb77, 0x5d7a3e42, 0x80ece7c7, 0x3d268b09, 0xe0b0528c,
    0x9dc354d4, 0x40558d51, 0xfd9fe19f, 0x2009381a, 0xbd8d91ab,
    0x601b482e, 0xddd124e0, 0x0047fd65, 0x7d34fb3d, 0xa0a222b8,
    0x1d684e76, 0xc0fe97f3, 0xe78e42c6, 0x3a189b43, 0x87d2f78d,
    0x5a442e08, 0x27372850, 0xfaa1f1d5, 0x476b9d1b, 0x9afd449e,
    0x098a3771, 0xd41ceef4, 0x69d6823a, 0xb4405bbf, 0xc9335de7,
    0x14a58462, 0xa96fe8ac, 0x74f93129, 0x5389e41c, 0x8e1f3d99,
    0x33d55157, 0xee4388d2, 0x93308e8a, 0x4ea6570f, 0xf36c3bc1,
    0x2efae244, 0x0ef3da5e, 0xd36503db, 0x6eaf6f15, 0xb339b690,
    0xce4ab0c8, 0x13dc694d, 0xae160583, 0x7380dc06, 0x54f00933,
    0x8966d0b6, 0x34acbc78, 0xe93a65fd, 0x944963a5, 0x49dfba20,
    0xf415d6ee, 0x29830f6b, 0xbaf47c84, 0x6762a501, 0xdaa8c9cf,
    0x073e104a, 0x7a4d1612, 0xa7dbcf97, 0x1a11a359, 0xc7877adc,
    0xe0f7afe9, 0x3d61766c, 0x80ab1aa2, 0x5d3dc327, 0x204ec57f,
    0xfdd81cfa, 0x40127034, 0x9d84a9b1, 0xa06a2517, 0x7dfcfc92,
    0xc036905c, 0x1da049d9, 0x60d34f81, 0xbd459604, 0x008ffaca,
    0xdd19234f, 0xfa69f67a, 0x27ff2fff, 0x9a354331, 0x47a39ab4,
    0x3ad09cec, 0xe7464569, 0x5a8c29a7, 0x871af022, 0x146d83cd,
    0xc9fb5a48, 0x74313686, 0xa9a7ef03, 0xd4d4e95b, 0x094230de,
    0xb4885c10, 0x691e8595, 0x4e6e50a0, 0x93f88925, 0x2e32e5eb,
    0xf3a43c6e, 0x8ed73a36, 0x5341e3b3, 0xee8b8f7d, 0x331d56f8,
    0x13146ee2, 0xce82b767, 0x7348dba9, 0xaede022c, 0xd3ad0474,
    0x0e3bddf1, 0xb3f1b13f, 0x6e6768ba, 0x4917bd8f, 0x9481640a,
    0x294b08c4, 0xf4ddd141, 0x89aed719, 0x54380e9c, 0xe9f26252,
    0x3464bbd7, 0xa713c838, 0x7a8511bd, 0xc74f7d73, 0x1ad9a4f6,
    0x67aaa2ae, 0xba3c7b2b, 0x07f617e5, 0xda60ce60, 0xfd101b55,
    0x2086c2d0, 0x9d4cae1e, 0x40da779b, 0x3da971c3, 0xe03fa846,
    0x5df5c488, 0x80631d0d, 0x1de7b4bc, 0xc0716d39, 0x7dbb01f7,
    0xa02dd872, 0xdd5ede2a, 0x00c807af, 0xbd026b61, 0x6094b2e4,
    0x47e467d1, 0x9a72be54, 0x27b8d29a, 0xfa2e0b1f, 0x875d0d47,
    0x5acbd4c2, 0xe701b80c, 0x3a976189, 0xa9e01266, 0x7476cbe3,
    0xc9bca72d, 0x142a7ea8, 0x695978f0, 0xb4cfa175, 0x0905cdbb,
    0xd493143e, 0xf3e3c10b, 0x2e75188e, 0x93bf7440, 0x4e29adc5,
    0x335aab9d, 0xeecc7218, 0x53061ed6, 0x8e90c753, 0xae99ff49,
    0x730f26cc, 0xcec54a02, 0x13539387, 0x6e2095df, 0xb3b64c5a,
    0x0e7c2094, 0xd3eaf911, 0xf49a2c24, 0x290cf5a1, 0x94c6996f,
    0x495040ea, 0x342346b2, 0xe9b59f37, 0x547ff3f9, 0x89e92a7c,
    0x1a9e5993, 0xc7088016, 0x7ac2ecd8, 0xa754355d, 0xda273305,
    0x07b1ea80, 0xba7b864e, 0x67ed5fcb, 0x409d8afe, 0x9d0b537b,
    0x20c13fb5, 0xfd57e630, 0x8024e068, 0x5db239ed, 0xe0785523,
    0x3dee8ca6},
   {0x00000000, 0x9ba54c6f, 0xec3b9e9f, 0x779ed2f0, 0x03063b7f,
    0x98a37710, 0xef3da5e0, 0x7498e98f, 0x060c76fe, 0x9da93a91,
    0xea37e861, 0x7192a40e, 0x050a4d81, 0x9eaf01ee, 0xe931d31e,
    0x72949f71, 0x0c18edfc, 0x97bda193, 0xe0237363, 0x7b863f0c,
    0x0f1ed683, 0x94bb9aec, 0xe325481c, 0x78800473, 0x0a149b02,
    0x91b1d76d, 0xe62f059d, 0x7d8a49f2, 0x0912a07d, 0x92b7ec12,
    0xe5293ee2, 0x7e8c728d, 0x1831dbf8, 0x83949797, 0xf40a4567,
    0x6faf0908, 0x1b37e087, 0x8092ace8, 0xf70c7e18, 0x6ca93277,
    0x1e3dad06, 0x8598e169, 0xf2063399, 0x69a37ff6, 0x1d3b9679,
    0x869eda16, 0xf10008e6, 0x6aa54489, 0x14293604, 0x8f8c7a6b,
    0xf812a89b, 0x63b7e4f4, 0x172f0d7b, 0x8c8a4114, 0xfb1493e4,
    0x60b1df8b, 0x122540fa, 0x89800c95, 0xfe1ede65, 0x65bb920a,
    0x11237b85, 0x8a8637ea, 0xfd18e51a, 0x66bda975, 0x3063b7f0,
    0xabc6fb9f, 0xdc58296f, 0x47fd6500, 0x33658c8f, 0xa8c0c0e0,
    0xdf5e1210, 0x44fb5e7f, 0x366fc10e, 0xadca8d61, 0xda545f91,
    0x41f113fe, 0x3569fa71, 0xaeccb61e, 0xd95264ee, 0x42f72881,
    0x3c7b5a0c, 0xa7de1663, 0xd040c493, 0x4be588fc, 0x3f7d6173,
    0xa4d82d1c, 0xd346ffec, 0x48e3b383, 0x3a772cf2, 0xa1d2609d,
    0xd64cb26d, 0x4de9fe02, 0x3971178d, 0xa2d45be2, 0xd54a8912,
    0x4eefc57d, 0x28526c08, 0xb3f72067, 0xc469f297, 0x5fccbef8,
    0x2b545777, 0xb0f11b18, 0xc76fc9e8, 0x5cca8587, 0x2e5e1af6,
    0xb5fb5699, 0xc2658469, 0x59c0c806, 0x2d582189, 0xb6fd6de6,
    0xc163bf16, 0x5ac6f379, 0x244a81f4, 0xbfefcd9b, 0xc8711f6b,
    0x53d45304, 0x274cba8b, 0xbce9f6e4, 0xcb772414, 0x50d2687b,
    0x2246f70a, 0xb9e3bb65, 0xce7d6995, 0x55d825fa, 0x2140cc75,
    0xbae5801a, 0xcd7b52ea, 0x56de1e85, 0x60c76fe0, 0xfb62238f,
    0x8cfcf17f, 0x1759bd10, 0x63c1549f, 0xf86418f0, 0x8ffaca00,
    0x145f866f, 0x66cb191e, 0xfd6e5571, 0x8af08781, 0x1155cbee,
    0x65cd2261, 0xfe686e0e, 0x89f6bcfe, 0x1253f091, 0x6cdf821c,
    0xf77ace73, 0x80e41c83, 0x1b4150ec, 0x6fd9b963, 0xf47cf50c,
    0x83e227fc, 0x18476b93, 0x6ad3f4e2, 0xf176b88d, 0x86e86a7d,
    0x1d4d2612, 0x69d5cf9d, 0xf27083f2, 0x85ee5102, 0x1e4b1d6d,
    0x78f6b418, 0xe353f877, 0x94cd2a87, 0x0f6866e8, 0x7bf08f67,
    0xe055c308, 0x97cb11f8, 0x0c6e5d97, 0x7efac2e6, 0xe55f8e89,
    0x92c15c79, 0x09641016, 0x7dfcf999, 0xe659b5f6, 0x91c76706,
    0x0a622b69, 0x74ee59e4, 0xef4b158b, 0x98d5c77b, 0x03708b14,
    0x77e8629b, 0xec4d2ef4, 0x9bd3fc04, 0x0076b06b, 0x72e22f1a,
    0xe9476375, 0x9ed9b185, 0x057cfdea, 0x71e41465, 0xea41580a,
    0x9ddf8afa, 0x067ac695, 0x50a4d810, 0xcb01947f, 0xbc9f468f,
    0x273a0ae0, 0x53a2e36f, 0xc807af00, 0xbf997df0, 0x243c319f,
    0x56a8aeee, 0xcd0de281, 0xba933071, 0x21367c1e, 0x55ae9591,
    0xce0bd9fe, 0xb9950b0e, 0x22304761, 0x5cbc35ec, 0xc7197983,
    0xb087ab73, 0x2b22e71c, 0x5fba0e93, 0xc41f42fc, 0xb381900c,
    0x2824dc63, 0x5ab04312, 0xc1150f7d, 0xb68bdd8d, 0x2d2e91e2,
    0x59b6786d, 0xc2133402, 0xb58de6f2, 0x2e28aa9d, 0x489503e8,
    0xd3304f87, 0xa4ae9d77, 0x3f0bd118, 0x4b933897, 0xd03674f8,
    0xa7a8a608, 0x3c0dea67, 0x4e997516, 0xd53c3979, 0xa2a2eb89,
    0x3907a7e6, 0x4d9f4e69, 0xd63a0206, 0xa1a4d0f6, 0x3a019c99,
    0x448dee14, 0xdf28a27b, 0xa8b6708b, 0x33133ce4, 0x478bd56b,
    0xdc2e9904, 0xabb04bf4, 0x3015079b, 0x428198ea, 0xd924d485,
    0xaeba0675, 0x351f4a1a, 0x4187a395, 0xda22effa, 0xadbc3d0a,
    0x36197165},
   {0x00000000, 0xc18edfc0, 0x586cb9c1, 0x99e26601, 0xb0d97382,
    0x7157ac42, 0xe8b5ca43, 0x293b1583, 0xbac3e145, 0x7b4d3e85,
    0xe2af5884, 0x23218744, 0x0a1a92c7, 0xcb944d07, 0x52762b06,
    0x93f8f4c6, 0xaef6c4cb, 0x6f781b0b, 0xf69a7d0a, 0x3714a2ca,
    0x1e2fb749, 0xdfa16889, 0x46430e88, 0x87cdd148, 0x1435258e,
    0xd5bbfa4e, 0x4c599c4f, 0x8dd7438f, 0xa4ec560c, 0x656289cc,
    0xfc80efcd, 0x3d0e300d, 0x869c8fd7, 0x47125017, 0xdef03616,
    0x1f7ee9d6, 0x3645fc55, 0xf7cb2395, 0x6e294594, 0xafa79a54,
    0x3c5f6e92, 0xfdd1b152, 0x6433d753, 0xa5bd0893, 0x8c861d10,
    0x4d08c2d0, 0xd4eaa4d1, 0x15647b11, 0x286a4b1c, 0xe9e494dc,
    0x7006f2dd, 0xb1882d1d, 0x98b3389e, 0x593de75e, 0xc0df815f,
    0x01515e9f, 0x92a9aa59, 0x53277599, 0xcac51398, 0x0b4bcc58,
    0x2270d9db, 0xe3fe061b, 0x7a1c601a, 0xbb92bfda, 0xd64819ef,
    0x17c6c62f, 0x8e24a02e, 0x4faa7fee, 0x66916a6d, 0xa71fb5ad,
    0x3efdd3ac, 0xff730c6c, 0x6c8bf8aa, 0xad05276a, 0x34e7416b,
    0xf5699eab, 0xdc528b28, 0x1ddc54e8, 0x843e32e9, 0x45b0ed29,
    0x78bedd24, 0xb93002e4, 0x20d264e5, 0xe15cbb25, 0xc867aea6,
    0x09e97166, 0x900b1767, 0x5185c8a7, 0xc27d3c61, 0x03f3e3a1,
    0x9a1185a0, 0x5b9f5a60, 0x72a44fe3, 0xb32a9023, 0x2ac8f622,
    0xeb4629e2, 0x50d49638, 0x915a49f8, 0x08b82ff9, 0xc936f039,
    0xe00de5ba, 0x21833a7a, 0xb8615c7b, 0x79ef83bb, 0xea17777d,
    0x2b99a8bd, 0xb27bcebc, 0x73f5117c, 0x5ace04ff, 0x9b40db3f,
    0x02a2bd3e, 0xc32c62fe, 0xfe2252f3, 0x3fac8d33, 0xa64eeb32,
    0x67c034f2, 0x4efb2171, 0x8f75feb1, 0x169798b0, 0xd7194770,
    0x44e1b3b6, 0x856f6c76, 0x1c8d0a77, 0xdd03d5b7, 0xf438c034,
    0x35b61ff4, 0xac5479f5, 0x6ddaa635, 0x77e1359f, 0xb66fea5f,
    0x2f8d8c5e, 0xee03539e, 0xc738461d, 0x06b699dd, 0x9f54ffdc,
    0x5eda201c, 0xcd22d4da, 0x0cac0b1a, 0x954e6d1b, 0x54c0b2db,
    0x7dfba758, 0xbc757898, 0x25971e99, 0xe419c159, 0xd917f154,
    0x18992e94, 0x817b4895, 0x40f59755, 0x69ce82d6, 0xa8405d16,
    0x31a23b17, 0xf02ce4d7, 0x63d41011, 0xa25acfd1, 0x3bb8a9d0,
    0xfa367610, 0xd30d6393, 0x1283bc53, 0x8b61da52, 0x4aef0592,
    0xf17dba48, 0x30f36588, 0xa9110389, 0x689fdc49, 0x41a4c9ca,
    0x802a160a, 0x19c8700b, 0xd846afcb, 0x4bbe5b0d, 0x8a3084cd,
    0x13d2e2cc, 0xd25c3d0c, 0xfb67288f, 0x3ae9f74f, 0xa30b914e,
    0x62854e8e, 0x5f8b7e83, 0x9e05a143, 0x07e7c742, 0xc6691882,
    0xef520d01, 0x2edcd2c1, 0xb73eb4c0, 0x76b06b00, 0xe5489fc6,
    0x24c64006, 0xbd242607, 0x7caaf9c7, 0x5591ec44, 0x941f3384,
    0x0dfd5585, 0xcc738a45, 0xa1a92c70, 0x6027f3b0, 0xf9c595b1,
    0x384b4a71, 0x11705ff2, 0xd0fe8032, 0x491ce633, 0x889239f3,
    0x1b6acd35, 0xdae412f5, 0x430674f4, 0x8288ab34, 0xabb3beb7,
    0x6a3d6177, 0xf3df0776, 0x3251d8b6, 0x0f5fe8bb, 0xced1377b,
    0x5733517a, 0x96bd8eba, 0xbf869b39, 0x7e0844f9, 0xe7ea22f8,
    0x2664fd38, 0xb59c09fe, 0x7412d63e, 0xedf0b03f, 0x2c7e6fff,
    0x05457a7c, 0xc4cba5bc, 0x5d29c3bd, 0x9ca71c7d, 0x2735a3a7,
    0xe6bb7c67, 0x7f591a66, 0xbed7c5a6, 0x97ecd025, 0x56620fe5,
    0xcf8069e4, 0x0e0eb624, 0x9df642e2, 0x5c789d22, 0xc59afb23,
    0x041424e3, 0x2d2f3160, 0xeca1eea0, 0x754388a1, 0xb4cd5761,
    0x89c3676c, 0x484db8ac, 0xd1afdead, 0x1021016d, 0x391a14ee,
    0xf894cb2e, 0x6176ad2f, 0xa0f872ef, 0x33008629, 0xf28e59e9,
    0x6b6c3fe8, 0xaae2e028, 0x83d9f5ab, 0x42572a6b, 0xdbb54c6a,
    0x1a3b93aa},
   {0x00000000, 0xefc26b3e, 0x04f5d03d, 0xeb37bb03, 0x09eba07a,
    0xe629cb44, 0x0d1e7047, 0xe2dc1b79, 0x13d740f4, 0xfc152bca,
    0x172290c9, 0xf8e0fbf7, 0x1a3ce08e, 0xf5fe8bb0, 0x1ec930b3,
    0xf10b5b8d, 0x27ae81e8, 0xc86cead6, 0x235b51d5, 0xcc993aeb,
    0x2e452192, 0xc1874aac, 0x2ab0f1af, 0xc5729a91, 0x3479c11c,
    0xdbbbaa22, 0x308c1121, 0xdf4e7a1f, 0x3d926166, 0xd2500a58,
    0x3967b15b, 0xd6a5da65, 0x4f5d03d0, 0xa09f68ee, 0x4ba8d3ed,
    0xa46ab8d3, 0x46b6a3aa, 0xa974c894, 0x42437397, 0xad8118a9,
    0x5c8a4324, 0xb348281a, 0x587f9319, 0xb7bdf827, 0x5561e35e,
    0xbaa38860, 0x51943363, 0xbe56585d, 0x68f38238, 0x8731e906,
    0x6c065205, 0x83c4393b, 0x61182242, 0x8eda497c, 0x65edf27f,
    0x8a2f9941, 0x7b24c2cc, 0x94e6a9f2, 0x7fd112f1, 0x901379cf,
    0x72cf62b6, 0x9d0d0988, 0x763ab28b, 0x99f8d9b5, 0x9eba07a0,
    0x71786c9e, 0x9a4fd79d, 0x758dbca3, 0x9751a7da, 0x7893cce4,
    0x93a477e7, 0x7c661cd9, 0x8d6d4754, 0x62af2c6a, 0x89989769,
    0x665afc57, 0x8486e72e, 0x6b448c10, 0x80733713, 0x6fb15c2d,
    0xb9148648, 0x56d6ed76, 0xbde15675, 0x52233d4b, 0xb0ff2632,
    0x5f3d4d0c, 0xb40af60f, 0x5bc89d31, 0xaac3c6bc, 0x4501ad82,
    0xae361681, 0x41f47dbf, 0xa32866c6, 0x4cea0df8, 0xa7ddb6fb,
    0x481fddc5, 0xd1e70470, 0x3e256f4e, 0xd512d44d, 0x3ad0bf73,
    0xd80ca40a, 0x37cecf34, 0xdcf97437, 0x333b1f09, 0xc2304484,
    0x2df22fba, 0xc6c594b9, 0x2907ff87, 0xcbdbe4fe, 0x24198fc0,
    0xcf2e34c3, 0x20ec5ffd, 0xf6498598, 0x198beea6, 0xf2bc55a5,
    0x1d7e3e9b, 0xffa225e2, 0x10604edc, 0xfb57f5df, 0x14959ee1,
    0xe59ec56c, 0x0a5cae52, 0xe16b1551, 0x0ea97e6f, 0xec756516,
    0x03b70e28, 0xe880b52b, 0x0742de15, 0xe6050901, 0x09c7623f,
    0xe2f0d93c, 0x0d32b202, 0xefeea97b, 0x002cc245, 0xeb1b7946,
    0x04d91278, 0xf5d249f5, 0x1a1022cb, 0xf12799c8, 0x1ee5f2f6,
    0xfc39e98f, 0x13fb82b1, 0xf8cc39b2, 0x170e528c, 0xc1ab88e9,
    0x2e69e3d7, 0xc55e58d4, 0x2a9c33ea, 0xc8402893, 0x278243ad,
    0xccb5f8ae, 0x23779390, 0xd27cc81d, 0x3dbea323, 0xd6891820,
    0x394b731e, 0xdb976867, 0x34550359, 0xdf62b85a, 0x30a0d364,
    0xa9580ad1, 0x469a61ef, 0xadaddaec, 0x426fb1d2, 0xa0b3aaab,
    0x4f71c195, 0xa4467a96, 0x4b8411a8, 0xba8f4a25, 0x554d211b,
    0xbe7a9a18, 0x51b8f126, 0xb364ea5f, 0x5ca68161, 0xb7913a62,
    0x5853515c, 0x8ef68b39, 0x6134e007, 0x8a035b04, 0x65c1303a,
    0x871d2b43, 0x68df407d, 0x83e8fb7e, 0x6c2a9040, 0x9d21cbcd,
    0x72e3a0f3, 0x99d41bf0, 0x761670ce, 0x94ca6bb7, 0x7b080089,
    0x903fbb8a, 0x7ffdd0b4, 0x78bf0ea1, 0x977d659f, 0x7c4ade9c,
    0x9388b5a2, 0x7154aedb, 0x9e96c5e5, 0x75a17ee6, 0x9a6315d8,
    0x6b684e55, 0x84aa256b, 0x6f9d9e68, 0x805ff556, 0x6283ee2f,
    0x8d418511, 0x66763e12, 0x89b4552c, 0x5f118f49, 0xb0d3e477,
    0x5be45f74, 0xb426344a, 0x56fa2f33, 0xb938440d, 0x520fff0e,
    0xbdcd9430, 0x4cc6cfbd, 0xa304a483, 0x48331f80, 0xa7f174be,
    0x452d6fc7, 0xaaef04f9, 0x41d8bffa, 0xae1ad4c4, 0x37e20d71,
    0xd820664f, 0x3317dd4c, 0xdcd5b672, 0x3e09ad0b, 0xd1cbc635,
    0x3afc7d36, 0xd53e1608, 0x24354d85, 0xcbf726bb, 0x20c09db8,
    0xcf02f686, 0x2ddeedff, 0xc21c86c1, 0x292b3dc2, 0xc6e956fc,
    0x104c8c99, 0xff8ee7a7, 0x14b95ca4, 0xfb7b379a, 0x19a72ce3,
    0xf66547dd, 0x1d52fcde, 0xf29097e0, 0x039bcc6d, 0xec59a753,
    0x076e1c50, 0xe8ac776e, 0x0a706c17, 0xe5b20729, 0x0e85bc2a,
    0xe147d714},
   {0x00000000, 0x177b1443, 0x2ef62886, 0x398d3cc5, 0x5dec510c,
    0x4a97454f, 0x731a798a, 0x64616dc9, 0xbbd8a218, 0xaca3b65b,
    0x952e8a9e, 0x82559edd, 0xe634f314, 0xf14fe757, 0xc8c2db92,
    0xdfb9cfd1, 0xacc04271, 0xbbbb5632, 0x82366af7, 0x954d7eb4,
    0xf12c137d, 0xe657073e, 0xdfda3bfb, 0xc8a12fb8, 0x1718e069,
    0x0063f42a, 0x39eec8ef, 0x2e95dcac, 0x4af4b165, 0x5d8fa526,
    0x640299e3, 0x73798da0, 0x82f182a3, 0x958a96e0, 0xac07aa25,
    0xbb7cbe66, 0xdf1dd3af, 0xc866c7ec, 0xf1ebfb29, 0xe690ef6a,
    0x392920bb, 0x2e5234f8, 0x17df083d, 0x00a41c7e, 0x64c571b7,
    0x73be65f4, 0x4a335931, 0x5d484d72, 0x2e31c0d2, 0x394ad491,
    0x00c7e854, 0x17bcfc17, 0x73dd91de, 0x64a6859d, 0x5d2bb958,
    0x4a50ad1b, 0x95e962ca, 0x82927689, 0xbb1f4a4c, 0xac645e0f,
    0xc80533c6, 0xdf7e2785, 0xe6f31b40, 0xf1880f03, 0xde920307,
    0xc9e91744, 0xf0642b81, 0xe71f3fc2, 0x837e520b, 0x94054648,
    0xad887a8d, 0xbaf36ece, 0x654aa11f, 0x7231b55c, 0x4bbc8999,
    0x5cc79dda, 0x38a6f013, 0x2fdde450, 0x1650d895, 0x012bccd6,
    0x72524176, 0x65295535, 0x5ca469f0, 0x4bdf7db3, 0x2fbe107a,
    0x38c50439, 0x014838fc, 0x16332cbf, 0xc98ae36e, 0xdef1f72d,
    0xe77ccbe8, 0xf007dfab, 0x9466b262, 0x831da621, 0xba909ae4,
    0xadeb8ea7, 0x5c6381a4, 0x4b1895e7, 0x7295a922, 0x65eebd61,
    0x018fd0a8, 0x16f4c4eb, 0x2f79f82e, 0x3802ec6d, 0xe7bb23bc,
    0xf0c037ff, 0xc94d0b3a, 0xde361f79, 0xba5772b0, 0xad2c66f3,
    0x94a15a36, 0x83da4e75, 0xf0a3c3d5, 0xe7d8d796, 0xde55eb53,
    0xc92eff10, 0xad4f92d9, 0xba34869a, 0x83b9ba5f, 0x94c2ae1c,
    0x4b7b61cd, 0x5c00758e, 0x658d494b, 0x72f65d08, 0x169730c1,
    0x01ec2482, 0x38611847, 0x2f1a0c04, 0x6655004f, 0x712e140c,
    0x48a328c9, 0x5fd83c8a, 0x3bb95143, 0x2cc24500, 0x154f79c5,
    0x02346d86, 0xdd8da257, 0xcaf6b614, 0xf37b8ad1, 0xe4009e92,
    0x8061f35b, 0x971ae718, 0xae97dbdd, 0xb9eccf9e, 0xca95423e,
    0xddee567d, 0xe4636ab8, 0xf3187efb, 0x97791332, 0x80020771,
    0xb98f3bb4, 0xaef42ff7, 0x714de026, 0x6636f465, 0x5fbbc8a0,
    0x48c0dce3, 0x2ca1b12a, 0x3bdaa569, 0x025799ac, 0x152c8def,
    0xe4a482ec, 0xf3df96af, 0xca52aa6a, 0xdd29be29, 0xb948d3e0,
    0xae33c7a3, 0x97befb66, 0x80c5ef25, 0x5f7c20f4, 0x480734b7,
    0x718a0872, 0x66f11c31, 0x029071f8, 0x15eb65bb, 0x2c66597e,
    0x3b1d4d3d, 0x4864c09d, 0x5f1fd4de, 0x6692e81b, 0x71e9fc58,
    0x15889191, 0x02f385d2, 0x3b7eb917, 0x2c05ad54, 0xf3bc6285,
    0xe4c776c6, 0xdd4a4a03, 0xca315e40, 0xae503389, 0xb92b27ca,
    0x80a61b0f, 0x97dd0f4c, 0xb8c70348, 0xafbc170b, 0x96312bce,
    0x814a3f8d, 0xe52b5244, 0xf2504607, 0xcbdd7ac2, 0xdca66e81,
    0x031fa150, 0x1464b513, 0x2de989d6, 0x3a929d95, 0x5ef3f05c,
    0x4988e41f, 0x7005d8da, 0x677ecc99, 0x14074139, 0x037c557a,
    0x3af169bf, 0x2d8a7dfc, 0x49eb1035, 0x5e900476, 0x671d38b3,
    0x70662cf0, 0xafdfe321, 0xb8a4f762, 0x8129cba7, 0x9652dfe4,
    0xf233b22d, 0xe548a66e, 0xdcc59aab, 0xcbbe8ee8, 0x3a3681eb,
    0x2d4d95a8, 0x14c0a96d, 0x03bbbd2e, 0x67dad0e7, 0x70a1c4a4,
    0x492cf861, 0x5e57ec22, 0x81ee23f3, 0x969537b0, 0xaf180b75,
    0xb8631f36, 0xdc0272ff, 0xcb7966bc, 0xf2f45a79, 0xe58f4e3a,
    0x96f6c39a, 0x818dd7d9, 0xb800eb1c, 0xaf7bff5f, 0xcb1a9296,
    0xdc6186d5, 0xe5ecba10, 0xf297ae53, 0x2d2e6182, 0x3a5575c1,
    0x03d84904, 0x14a35d47, 0x70c2308e, 0x67b924cd, 0x5e341808,
    0x494f0c4b}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x0000000000000000, 0x43147b1700000000, 0x8628f62e00000000,
    0xc53c8d3900000000, 0x0c51ec5d00000000, 0x4f45974a00000000,
    0x8a791a7300000000, 0xc96d616400000000, 0x18a2d8bb00000000,
    0x5bb6a3ac00000000, 0x9e8a2e9500000000, 0xdd9e558200000000,
    0x14f334e600000000, 0x57e74ff100000000, 0x92dbc2c800000000,
    0xd1cfb9df00000000, 0x7142c0ac00000000, 0x3256bbbb00000000,
    0xf76a368200000000, 0xb47e4d9500000000, 0x7d132cf100000000,
    0x3e0757e600000000, 0xfb3bdadf00000000, 0xb82fa1c800000000,
    0x69e0181700000000, 0x2af4630000000000, 0xefc8ee3900000000,
    0xacdc952e00000000, 0x65b1f44a00000000, 0x26a58f5d00000000,
    0xe399026400000000, 0xa08d797300000000, 0xa382f18200000000,
    0xe0968a9500000000, 0x25aa07ac00000000, 0x66be7cbb00000000,
    0xafd31ddf00000000, 0xecc766c800000000, 0x29fbebf100000000,
    0x6aef90e600000000, 0xbb20293900000000, 0xf834522e00000000,
    0x3d08df1700000000, 0x7e1ca40000000000, 0xb771c56400000000,
    0xf465be7300000000, 0x3159334a00000000, 0x724d485d00000000,
    0xd2c0312e00000000, 0x91d44a3900000000, 0x54e8c70000000000,
    0x17fcbc1700000000, 0xde91dd7300000000, 0x9d85a66400000000,
    0x58b92b5d00000000, 0x1bad504a00000000, 0xca62e99500000000,
    0x8976928200000000, 0x4c4a1fbb00000000, 0x0f5e64ac00000000,
    0xc63305c800000000, 0x85277edf00000000, 0x401bf3e600000000,
    0x030f88f100000000, 0x070392de00000000, 0x4417e9c900000000,
    0x812b64f000000000, 0xc23f1fe700000000, 0x0b527e8300000000,
    0x4846059400000000, 0x8d7a88ad00000000, 0xce6ef3ba00000000,
    0x1fa14a6500000000, 0x5cb5317200000000, 0x9989bc4b00000000,
    0xda9dc75c00000000, 0x13f0a63800000000, 0x50e4dd2f00000000,
    0x95d8501600000000, 0xd6cc2b0100000000, 0x7641527200000000,
    0x3555296500000000, 0xf069a45c00000000, 0xb37ddf4b00000000,
    0x7a10be2f00000000, 0x3904c53800000000, 0xfc38480100000000,
    0xbf2c331600000000, 0x6ee38ac900000000, 0x2df7f1de00000000,
    0xe8cb7ce700000000, 0xabdf07f000000000, 0x62b2669400000000,
    0x21a61d8300000000, 0xe49a90ba00000000, 0xa78eebad00000000,
    0xa481635c00000000, 0xe795184b00000000, 0x22a9957200000000,
    0x61bdee6500000000, 0xa8d08f0100000000, 0xebc4f41600000000,
    0x2ef8792f00000000, 0x6dec023800000000, 0xbc23bbe700000000,
    0xff37c0f000000000, 0x3a0b4dc900000000, 0x791f36de00000000,
    0xb07257ba00000000, 0xf3662cad00000000, 0x365aa19400000000,
    0x754eda8300000000, 0xd5c3a3f000000000, 0x96d7d8e700000000,
    0x53eb55de00000000, 0x10ff2ec900000000, 0xd9924fad00000000,
    0x9a8634ba00000000, 0x5fbab98300000000, 0x1caec29400000000,
    0xcd617b4b00000000, 0x8e75005c00000000, 0x4b498d6500000000,
    0x085df67200000000, 0xc130971600000000, 0x8224ec0100000000,
    0x4718613800000000, 0x040c1a2f00000000, 0x4f00556600000000,
    0x0c142e7100000000, 0xc928a34800000000, 0x8a3cd85f00000000,
    0x4351b93b00000000, 0x0045c22c00000000, 0xc5794f1500000000,
    0x866d340200000000, 0x57a28ddd00000000, 0x14b6f6ca00000000,
    0xd18a7bf300000000, 0x929e00e400000000, 0x5bf3618000000000,
    0x18e71a9700000000, 0xdddb97ae00000000, 0x9ecfecb900000000,
    0x3e4295ca00000000, 0x7d56eedd00000000, 0xb86a63e400000000,
    0xfb7e18f300000000, 0x3213799700000000, 0x7107028000000000,
    0xb43b8fb900000000, 0xf72ff4ae00000000, 0x26e04d7100000000,
    0x65f4366600000000, 0xa0c8bb5f00000000, 0xe3dcc04800000000,
    0x2ab1a12c00000000, 0x69a5da3b00000000, 0xac99570200000000,
    0xef8d2c1500000000, 0xec82a4e400000000, 0xaf96dff300000000,
    0x6aaa52ca00000000, 0x29be29dd00000000, 0xe0d348b900000000,
    0xa3c733ae00000000, 0x66fbbe9700000000, 0x25efc58000000000,
    0xf4207c5f00000000, 0xb734074800000000, 0x72088a7100000000,
    0x311cf16600000000, 0xf871900200000000, 0xbb65eb1500000000,
    0x7e59662c00000000, 0x3d4d1d3b00000000, 0x9dc0644800000000,
    0xded41f5f00000000, 0x1be8926600000000, 0x58fce97100000000,
    0x9191881500000000, 0xd285f30200000000, 0x17b97e3b00000000,
    0x54ad052c00000000, 0x8562bcf300000000, 0xc676c7e400000000,
    0x034a4add00000000, 0x405e31ca00000000, 0x893350ae00000000,
    0xca272bb900000000, 0x0f1ba68000000000, 0x4c0fdd9700000000,
    0x4803c7b800000000, 0x0b17bcaf00000000, 0xce2b319600000000,
    0x8d3f4a8100000000, 0x44522be500000000, 0x074650f200000000,
    0xc27addcb00000000, 0x816ea6dc00000000, 0x50a11f0300000000,
    0x13b5641400000000, 0xd689e92d00000000, 0x959d923a00000000,
    0x5cf0f35e00000000, 0x1fe4884900000000, 0xdad8057000000000,
    0x99cc7e6700000000, 0x3941071400000000, 0x7a557c0300000000,
    0xbf69f13a00000000, 0xfc7d8a2d00000000, 0x3510eb4900000000,
    0x7604905e00000000, 0xb3381d6700000000, 0xf02c667000000000,
    0x21e3dfaf00000000, 0x62f7a4b800000000, 0xa7cb298100000000,
    0xe4df529600000000, 0x2db233f200000000, 0x6ea648e500000000,
    0xab9ac5dc00000000, 0xe88ebecb00000000, 0xeb81363a00000000,
    0xa8954d2d00000000, 0x6da9c01400000000, 0x2ebdbb0300000000,
    0xe7d0da6700000000, 0xa4c4a17000000000, 0x61f82c4900000000,
    0x22ec575e00000000, 0xf323ee8100000000, 0xb037959600000000,
    0x750b18af00000000, 0x361f63b800000000, 0xff7202dc00000000,
    0xbc6679cb00000000, 0x795af4f200000000, 0x3a4e8fe500000000,
    0x9ac3f69600000000, 0xd9d78d8100000000, 0x1ceb00b800000000,
    0x5fff7baf00000000, 0x96921acb00000000, 0xd58661dc00000000,
    0x10baece500000000, 0x53ae97f200000000, 0x82612e2d00000000,
    0xc175553a00000000, 0x0449d80300000000, 0x475da31400000000,
    0x8e30c27000000000, 0xcd24b96700000000, 0x0818345e00000000,
    0x4b0c4f4900000000},
   {0x0000000000000000, 0x3e6bc2ef00000000, 0x3dd0f50400000000,
    0x03bb37eb00000000, 0x7aa0eb0900000000, 0x44cb29e600000000,
    0x47701e0d00000000, 0x791bdce200000000, 0xf440d71300000000,
    0xca2b15fc00000000, 0xc990221700000000, 0xf7fbe0f800000000,
    0x8ee03c1a00000000, 0xb08bfef500000000, 0xb330c91e00000000,
    0x8d5b0bf100000000, 0xe881ae2700000000, 0xd6ea6cc800000000,
    0xd5515b2300000000, 0xeb3a99cc00000000, 0x9221452e00000000,
    0xac4a87c100000000, 0xaff1b02a00000000, 0x919a72c500000000,
    0x1cc1793400000000, 0x22aabbdb00000000, 0x21118c3000000000,
    0x1f7a4edf00000000, 0x6661923d00000000, 0x580a50d200000000,
    0x5bb1673900000000, 0x65daa5d600000000, 0xd0035d4f00000000,
    0xee689fa000000000, 0xedd3a84b00000000, 0xd3b86aa400000000,
    0xaaa3b64600000000, 0x94c874a900000000, 0x9773434200000000,
    0xa91881ad00000000, 0x24438a5c00000000, 0x1a2848b300000000,
    0x19937f5800000000, 0x27f8bdb700000000, 0x5ee3615500000000,
    0x6088a3ba00000000, 0x6333945100000000, 0x5d5856be00000000,
    0x3882f36800000000, 0x06e9318700000000, 0x0552066c00000000,
    0x3b39c48300000000, 0x4222186100000000, 0x7c49da8e00000000,
    0x7ff2ed6500000000, 0x41992f8a00000000, 0xccc2247b00000000,
    0xf2a9e69400000000, 0xf112d17f00000000, 0xcf79139000000000,
    0xb662cf7200000000, 0x88090d9d00000000, 0x8bb23a7600000000,
    0xb5d9f89900000000, 0xa007ba9e00000000, 0x9e6c787100000000,
    0x9dd74f9a00000000, 0xa3bc8d7500000000, 0xdaa7519700000000,
    0xe4cc937800000000, 0xe777a49300000000, 0xd91c667c00000000,
    0x54476d8d00000000, 0x6a2caf6200000000, 0x6997988900000000,
    0x57fc5a6600000000, 0x2ee7868400000000, 0x108c446b00000000,
    0x1337738000000000, 0x2d5cb16f00000000, 0x488614b900000000,
    0x76edd65600000000, 0x7556e1bd00000000, 0x4b3d235200000000,
    0x3226ffb000000000, 0x0c4d3d5f00000000, 0x0ff60ab400000000,
    0x319dc85b00000000, 0xbcc6c3aa00000000, 0x82ad014500000000,
    0x811636ae00000000, 0xbf7df44100000000, 0xc66628a300000000,
    0xf80dea4c00000000, 0xfbb6dda700000000, 0xc5dd1f4800000000,
    0x7004e7d100000000, 0x4e6f253e00000000, 0x4dd412d500000000,
    0x73bfd03a00000000, 0x0aa40cd800000000, 0x34cfce3700000000,
    0x3774f9dc00000000, 0x091f3b3300000000, 0x844430c200000000,
    0xba2ff22d00000000, 0xb994c5c600000000, 0x87ff072900000000,
    0xfee4dbcb00000000, 0xc08f192400000000, 0xc3342ecf00000000,
    0xfd5fec2000000000, 0x988549f600000000, 0xa6ee8b1900000000,
    0xa555bcf200000000, 0x9b3e7e1d00000000, 0xe225a2ff00000000,
    0xdc4e601000000000, 0xdff557fb00000000, 0xe19e951400000000,
    0x6cc59ee500000000, 0x52ae5c0a00000000, 0x51156be100000000,
    0x6f7ea90e00000000, 0x166575ec00000000, 0x280eb70300000000,
    0x2bb580e800000000, 0x15de420700000000, 0x010905e600000000,
    0x3f62c70900000000, 0x3cd9f0e200000000, 0x02b2320d00000000,
    0x7ba9eeef00000000, 0x45c22c0000000000, 0x46791beb00000000,
    0x7812d90400000000, 0xf549d2f500000000, 0xcb22101a00000000,
    0xc89927f100000000, 0xf6f2e51e00000000, 0x8fe939fc00000000,
    0xb182fb1300000000, 0xb239ccf800000000, 0x8c520e1700000000,
    0xe988abc100000000, 0xd7e3692e00000000, 0xd4585ec500000000,
    0xea339c2a00000000, 0x932840c800000000, 0xad43822700000000,
    0xaef8b5cc00000000, 0x9093772300000000, 0x1dc87cd200000000,
    0x23a3be3d00000000, 0x201889d600000000, 0x1e734b3900000000,
    0x676897db00000000, 0x5903553400000000, 0x5ab862df00000000,
    0x64d3a03000000000, 0xd10a58a900000000, 0xef619a4600000000,
    0xecdaadad00000000, 0xd2b16f4200000000, 0xabaab3a000000000,
    0x95c1714f00000000, 0x967a46a400000000, 0xa811844b00000000,
    0x254a8fba00000000, 0x1b214d5500000000, 0x189a7abe00000000,
    0x26f1b85100000000, 0x5fea64b300000000, 0x6181a65c00000000,
    0x623a91b700000000, 0x5c51535800000000, 0x398bf68e00000000,
    0x07e0346100000000, 0x045b038a00000000, 0x3a30c16500000000,
    0x432b1d8700000000, 0x7d40df6800000000, 0x7efbe88300000000,
    0x40902a6c00000000, 0xcdcb219d00000000, 0xf3a0e37200000000,
    0xf01bd49900000000, 0xce70167600000000, 0xb76bca9400000000,
    0x8900087b00000000, 0x8abb3f9000000000, 0xb4d0fd7f00000000,
    0xa10ebf7800000000, 0x9f657d9700000000, 0x9cde4a7c00000000,
    0xa2b5889300000000, 0xdbae547100000000, 0xe5c5969e00000000,
    0xe67ea17500000000, 0xd815639a00000000, 0x554e686b00000000,
    0x6b25aa8400000000, 0x689e9d6f00000000, 0x56f55f8000000000,
    0x2fee836200000000, 0x1185418d00000000, 0x123e766600000000,
    0x2c55b48900000000, 0x498f115f00000000, 0x77e4d3b000000000,
    0x745fe45b00000000, 0x4a3426b400000000, 0x332ffa5600000000,
    0x0d4438b900000000, 0x0eff0f5200000000, 0x3094cdbd00000000,
    0xbdcfc64c00000000, 0x83a404a300000000, 0x801f334800000000,
    0xbe74f1a700000000, 0xc76f2d4500000000, 0xf904efaa00000000,
    0xfabfd84100000000, 0xc4d41aae00000000, 0x710de23700000000,
    0x4f6620d800000000, 0x4cdd173300000000, 0x72b6d5dc00000000,
    0x0bad093e00000000, 0x35c6cbd100000000, 0x367dfc3a00000000,
    0x08163ed500000000, 0x854d352400000000, 0xbb26f7cb00000000,
    0xb89dc02000000000, 0x86f602cf00000000, 0xffedde2d00000000,
    0xc1861cc200000000, 0xc23d2b2900000000, 0xfc56e9c600000000,
    0x998c4c1000000000, 0xa7e78eff00000000, 0xa45cb91400000000,
    0x9a377bfb00000000, 0xe32ca71900000000, 0xdd4765f600000000,
    0xdefc521d00000000, 0xe09790f200000000, 0x6dcc9b0300000000,
    0x53a759ec00000000, 0x501c6e0700000000, 0x6e77ace800000000,
    0x176c700a00000000, 0x2907b2e500000000, 0x2abc850e00000000,
    0x14d747e100000000},
   {0x0000000000000000, 0xc0df8ec100000000, 0xc1b96c5800000000,
    0x0166e29900000000, 0x8273d9b000000000, 0x42ac577100000000,
    0x43cab5e800000000, 0x83153b2900000000, 0x45e1c3ba00000000,
    0x853e4d7b00000000, 0x8458afe200000000, 0x4487212300000000,
    0xc7921a0a00000000, 0x074d94cb00000000, 0x062b765200000000,
    0xc6f4f89300000000, 0xcbc4f6ae00000000, 0x0b1b786f00000000,
    0x0a7d9af600000000, 0xcaa2143700000000, 0x49b72f1e00000000,
    0x8968a1df00000000, 0x880e434600000000, 0x48d1cd8700000000,
    0x8e25351400000000, 0x4efabbd500000000, 0x4f9c594c00000000,
    0x8f43d78d00000000, 0x0c56eca400000000, 0xcc89626500000000,
    0xcdef80fc00000000, 0x0d300e3d00000000, 0xd78f9c8600000000,
    0x1750124700000000, 0x1636f0de00000000, 0xd6e97e1f00000000,
    0x55fc453600000000, 0x9523cbf700000000, 0x9445296e00000000,
    0x549aa7af00000000, 0x926e5f3c00000000, 0x52b1d1fd00000000,
    0x53d7336400000000, 0x9308bda500000000, 0x101d868c00000000,
    0xd0c2084d00000000, 0xd1a4ead400000000, 0x117b641500000000,
    0x1c4b6a2800000000, 0xdc94e4e900000000, 0xddf2067000000000,
    0x1d2d88b100000000, 0x9e38b39800000000, 0x5ee73d5900000000,
    0x5f81dfc000000000, 0x9f5e510100000000, 0x59aaa99200000000,
    0x9975275300000000, 0x9813c5ca00000000, 0x58cc4b0b00000000,
    0xdbd9702200000000, 0x1b06fee300000000, 0x1a601c7a00000000,
    0xdabf92bb00000000, 0xef1948d600000000, 0x2fc6c61700000000,
    0x2ea0248e00000000, 0xee7faa4f00000000, 0x6d6a916600000000,
    0xadb51fa700000000, 0xacd3fd3e00000000, 0x6c0c73ff00000000,
    0xaaf88b6c00000000, 0x6a2705ad00000000, 0x6b41e73400000000,
    0xab9e69f500000000, 0x288b52dc00000000, 0xe854dc1d00000000,
    0xe9323e8400000000, 0x29edb04500000000, 0x24ddbe7800000000,
    0xe40230b900000000, 0xe564d22000000000, 0x25bb5ce100000000,
    0xa6ae67c800000000, 0x6671e90900000000, 0x67170b9000000000,
    0xa7c8855100000000, 0x613c7dc200000000, 0xa1e3f30300000000,
    0xa085119a00000000, 0x605a9f5b00000000, 0xe34fa47200000000,
    0x23902ab300000000, 0x22f6c82a00000000, 0xe22946eb00000000,
    0x3896d45000000000, 0xf8495a9100000000, 0xf92fb80800000000,
    0x39f036c900000000, 0xbae50de000000000, 0x7a3a832100000000,
    0x7b5c61b800000000, 0xbb83ef7900000000, 0x7d7717ea00000000,
    0xbda8992b00000000, 0xbcce7bb200000000, 0x7c11f57300000000,
    0xff04ce5a00000000, 0x3fdb409b00000000, 0x3ebda20200000000,
    0xfe622cc300000000, 0xf35222fe00000000, 0x338dac3f00000000,
    0x32eb4ea600000000, 0xf234c06700000000, 0x7121fb4e00000000,
    0xb1fe758f00000000, 0xb098971600000000, 0x704719d700000000,
    0xb6b3e14400000000, 0x766c6f8500000000, 0x770a8d1c00000000,
    0xb7d503dd00000000, 0x34c038f400000000, 0xf41fb63500000000,
    0xf57954ac00000000, 0x35a6da6d00000000, 0x9f35e17700000000,
    0x5fea6fb600000000, 0x5e8c8d2f00000000, 0x9e5303ee00000000,
    0x1d4638c700000000, 0xdd99b60600000000, 0xdcff549f00000000,
    0x1c20da5e00000000, 0xdad422cd00000000, 0x1a0bac0c00000000,
    0x1b6d4e9500000000, 0xdbb2c05400000000, 0x58a7fb7d00000000,
    0x987875bc00000000, 0x991e972500000000, 0x59c119e400000000,
    0x54f117d900000000, 0x942e991800000000, 0x95487b8100000000,
    0x5597f54000000000, 0xd682ce6900000000, 0x165d40a800000000,
    0x173ba23100000000, 0xd7e42cf000000000, 0x1110d46300000000,
    0xd1cf5aa200000000, 0xd0a9b83b00000000, 0x107636fa00000000,
    0x93630dd300000000, 0x53bc831200000000, 0x52da618b00000000,
    0x9205ef4a00000000, 0x48ba7df100000000, 0x8865f33000000000,
    0x890311a900000000, 0x49dc9f6800000000, 0xcac9a44100000000,
    0x0a162a8000000000, 0x0b70c81900000000, 0xcbaf46d800000000,
    0x0d5bbe4b00000000, 0xcd84308a00000000, 0xcce2d21300000000,
    0x0c3d5cd200000000, 0x8f2867fb00000000, 0x4ff7e93a00000000,
    0x4e910ba300000000, 0x8e4e856200000000, 0x837e8b5f00000000,
    0x43a1059e00000000, 0x42c7e70700000000, 0x821869c600000000,
    0x010d52ef00000000, 0xc1d2dc2e00000000, 0xc0b43eb700000000,
    0x006bb07600000000, 0xc69f48e500000000, 0x0640c62400000000,
    0x072624bd00000000, 0xc7f9aa7c00000000, 0x44ec915500000000,
    0x84331f9400000000, 0x8555fd0d00000000, 0x458a73cc00000000,
    0x702ca9a100000000, 0xb0f3276000000000, 0xb195c5f900000000,
    0x714a4b3800000000, 0xf25f701100000000, 0x3280fed000000000,
    0x33e61c4900000000, 0xf339928800000000, 0x35cd6a1b00000000,
    0xf512e4da00000000, 0xf474064300000000, 0x34ab888200000000,
    0xb7beb3ab00000000, 0x77613d6a00000000, 0x7607dff300000000,
    0xb6d8513200000000, 0xbbe85f0f00000000, 0x7b37d1ce00000000,
    0x7a51335700000000, 0xba8ebd9600000000, 0x399b86bf00000000,
    0xf944087e00000000, 0xf822eae700000000, 0x38fd642600000000,
    0xfe099cb500000000, 0x3ed6127400000000, 0x3fb0f0ed00000000,
    0xff6f7e2c00000000, 0x7c7a450500000000, 0xbca5cbc400000000,
    0xbdc3295d00000000, 0x7d1ca79c00000000, 0xa7a3352700000000,
    0x677cbbe600000000, 0x661a597f00000000, 0xa6c5d7be00000000,
    0x25d0ec9700000000, 0xe50f625600000000, 0xe46980cf00000000,
    0x24b60e0e00000000, 0xe242f69d00000000, 0x229d785c00000000,
    0x23fb9ac500000000, 0xe324140400000000, 0x60312f2d00000000,
    0xa0eea1ec00000000, 0xa188437500000000, 0x6157cdb400000000,
    0x6c67c38900000000, 0xacb84d4800000000, 0xaddeafd100000000,
    0x6d01211000000000, 0xee141a3900000000, 0x2ecb94f800000000,
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    0x8843caef00000000, 0x6098315600000000, 0x7a9730cd00000000,
    0x924ccb7400000000, 0xeb26b66500000000, 0x03fd4ddc00000000,
    0xd1a1a7cc00000000, 0x397a5c7500000000, 0x4010216400000000,
    0xa8cbdadd00000000, 0xb2c4db4600000000, 0x5a1f20ff00000000,
    0x23755dee00000000, 0xcbaea65700000000, 0x566d2e0300000000,
    0xbeb6d5ba00000000, 0xc7dca8ab00000000, 0x2f07531200000000,
    0x3508528900000000, 0xddd3a93000000000, 0xa4b9d42100000000,
    0x4c622f9800000000, 0x7d7bfbca00000000, 0x95a0007300000000,
    0xecca7d6200000000, 0x041186db00000000, 0x1e1e874000000000,
    0xf6c57cf900000000, 0x8faf01e800000000, 0x6774fa5100000000,
    0xfab7720500000000, 0x126c89bc00000000, 0x6b06f4ad00000000,
    0x83dd0f1400000000, 0x99d20e8f00000000, 0x7109f53600000000,
    0x0863882700000000, 0xe0b8739e00000000, 0x32e4998e00000000,
    0xda3f623700000000, 0xa3551f2600000000, 0x4b8ee49f00000000,
    0x5181e50400000000, 0xb95a1ebd00000000, 0xc03063ac00000000,
    0x28eb981500000000, 0xb528104100000000, 0x5df3ebf800000000,
    0x249996e900000000, 0xcc426d5000000000, 0xd64d6ccb00000000,
    0x3e96977200000000, 0x47fcea6300000000, 0xaf2711da00000000,
    0xe3453e4200000000, 0x0b9ec5fb00000000, 0x72f4b8ea00000000,
    0x9a2f435300000000, 0x802042c800000000, 0x68fbb97100000000,
    0x1191c46000000000, 0xf94a3fd900000000, 0x6489b78d00000000,
    0x8c524c3400000000, 0xf538312500000000, 0x1de3ca9c00000000,
    0x07eccb0700000000, 0xef3730be00000000, 0x965d4daf00000000,
    0x7e86b61600000000, 0xacda5c0600000000, 0x4401a7bf00000000,
    0x3d6bdaae00000000, 0xd5b0211700000000, 0xcfbf208c00000000,
    0x2764db3500000000, 0x5e0ea62400000000, 0xb6d55d9d00000000,
    0x2b16d5c900000000, 0xc3cd2e7000000000, 0xbaa7536100000000,
    0x527ca8d800000000, 0x4873a94300000000, 0xa0a852fa00000000,
    0xd9c22feb00000000, 0x3119d45200000000, 0xbbf0874e00000000,
    0x532b7cf700000000, 0x2a4101e600000000, 0xc29afa5f00000000,
    0xd895fbc400000000, 0x304e007d00000000, 0x49247d6c00000000,
    0xa1ff86d500000000, 0x3c3c0e8100000000, 0xd4e7f53800000000,
    0xad8d882900000000, 0x4556739000000000, 0x5f59720b00000000,
    0xb78289b200000000, 0xcee8f4a300000000, 0x26330f1a00000000,
    0xf46fe50a00000000, 0x1cb41eb300000000, 0x65de63a200000000,
    0x8d05981b00000000, 0x970a998000000000, 0x7fd1623900000000,
    0x06bb1f2800000000, 0xee60e49100000000, 0x73a36cc500000000,
    0x9b78977c00000000, 0xe212ea6d00000000, 0x0ac911d400000000,
    0x10c6104f00000000, 0xf81debf600000000, 0x817796e700000000,
    0x69ac6d5e00000000, 0x25ce42c600000000, 0xcd15b97f00000000,
    0xb47fc46e00000000, 0x5ca43fd700000000, 0x46ab3e4c00000000,
    0xae70c5f500000000, 0xd71ab8e400000000, 0x3fc1435d00000000,
    0xa202cb0900000000, 0x4ad930b000000000, 0x33b34da100000000,
    0xdb68b61800000000, 0xc167b78300000000, 0x29bc4c3a00000000,
    0x50d6312b00000000, 0xb80dca9200000000, 0x6a51208200000000,
    0x828adb3b00000000, 0xfbe0a62a00000000, 0x133b5d9300000000,
    0x09345c0800000000, 0xe1efa7b100000000, 0x9885daa000000000,
    0x705e211900000000, 0xed9da94d00000000, 0x054652f400000000,
    0x7c2c2fe500000000, 0x94f7d45c00000000, 0x8ef8d5c700000000,
    0x66232e7e00000000, 0x1f49536f00000000, 0xf792a8d600000000,
    0xc68b7c8400000000, 0x2e50873d00000000, 0x573afa2c00000000,
    0xbfe1019500000000, 0xa5ee000e00000000, 0x4d35fbb700000000,
    0x345f86a600000000, 0xdc847d1f00000000, 0x4147f54b00000000,
    0xa99c0ef200000000, 0xd0f673e300000000, 0x382d885a00000000,
    0x222289c100000000, 0xcaf9727800000000, 0xb3930f6900000000,
    0x5b48f4d000000000, 0x89141ec000000000, 0x61cfe57900000000,
    0x18a5986800000000, 0xf07e63d100000000, 0xea71624a00000000,
    0x02aa99f300000000, 0x7bc0e4e200000000, 0x931b1f5b00000000,
    0x0ed8970f00000000, 0xe6036cb600000000, 0x9f6911a700000000,
    0x77b2ea1e00000000, 0x6dbdeb8500000000, 0x8566103c00000000,
    0xfc0c6d2d00000000, 0x14d7969400000000, 0x58b5b90c00000000,
    0xb06e42b500000000, 0xc9043fa400000000, 0x21dfc41d00000000,
    0x3bd0c58600000000, 0xd30b3e3f00000000, 0xaa61432e00000000,
    0x42bab89700000000, 0xdf7930c300000000, 0x37a2cb7a00000000,
    0x4ec8b66b00000000, 0xa6134dd200000000, 0xbc1c4c4900000000,
    0x54c7b7f000000000, 0x2dadcae100000000, 0xc576315800000000,
    0x172adb4800000000, 0xfff120f100000000, 0x869b5de000000000,
    0x6e40a65900000000, 0x744fa7c200000000, 0x9c945c7b00000000,
    0xe5fe216a00000000, 0x0d25dad300000000, 0x90e6528700000000,
    0x783da93e00000000, 0x0157d42f00000000, 0xe98c2f9600000000,
    0xf3832e0d00000000, 0x1b58d5b400000000, 0x6232a8a500000000,
    0x8ae9531c00000000},
   {0x0000000000000000, 0x919168ae00000000, 0x6325a08700000000,
    0xf2b4c82900000000, 0x874c31d400000000, 0x16dd597a00000000,
    0xe469915300000000, 0x75f8f9fd00000000, 0x4f9f137300000000,
    0xde0e7bdd00000000, 0x2cbab3f400000000, 0xbd2bdb5a00000000,
    0xc8d322a700000000, 0x59424a0900000000, 0xabf6822000000000,
    0x3a67ea8e00000000, 0x9e3e27e600000000, 0x0faf4f4800000000,
    0xfd1b876100000000, 0x6c8aefcf00000000, 0x1972163200000000,
    0x88e37e9c00000000, 0x7a57b6b500000000, 0xebc6de1b00000000,
    0xd1a1349500000000, 0x40305c3b00000000, 0xb284941200000000,
    0x2315fcbc00000000, 0x56ed054100000000, 0xc77c6def00000000,
    0x35c8a5c600000000, 0xa459cd6800000000, 0x7d7b3f1700000000,
    0xecea57b900000000, 0x1e5e9f9000000000, 0x8fcff73e00000000,
    0xfa370ec300000000, 0x6ba6666d00000000, 0x9912ae4400000000,
    0x0883c6ea00000000, 0x32e42c6400000000, 0xa37544ca00000000,
    0x51c18ce300000000, 0xc050e44d00000000, 0xb5a81db000000000,
    0x2439751e00000000, 0xd68dbd3700000000, 0x471cd59900000000,
    0xe34518f100000000, 0x72d4705f00000000, 0x8060b87600000000,
    0x11f1d0d800000000, 0x6409292500000000, 0xf598418b00000000,
    0x072c89a200000000, 0x96bde10c00000000, 0xacda0b8200000000,
    0x3d4b632c00000000, 0xcfffab0500000000, 0x5e6ec3ab00000000,
    0x2b963a5600000000, 0xba0752f800000000, 0x48b39ad100000000,
    0xd922f27f00000000, 0xfaf67e2e00000000, 0x6b67168000000000,
    0x99d3dea900000000, 0x0842b60700000000, 0x7dba4ffa00000000,
    0xec2b275400000000, 0x1e9fef7d00000000, 0x8f0e87d300000000,
    0xb5696d5d00000000, 0x24f805f300000000, 0xd64ccdda00000000,
    0x47dda57400000000, 0x32255c8900000000, 0xa3b4342700000000,
    0x5100fc0e00000000, 0xc09194a000000000, 0x64c859c800000000,
    0xf559316600000000, 0x07edf94f00000000, 0x967c91e100000000,
    0xe384681c00000000, 0x721500b200000000, 0x80a1c89b00000000,
    0x1130a03500000000, 0x2b574abb00000000, 0xbac6221500000000,
    0x4872ea3c00000000, 0xd9e3829200000000, 0xac1b7b6f00000000,
    0x3d8a13c100000000, 0xcf3edbe800000000, 0x5eafb34600000000,
    0x878d413900000000, 0x161c299700000000, 0xe4a8e1be00000000,
    0x7539891000000000, 0x00c170ed00000000, 0x9150184300000000,
    0x63e4d06a00000000, 0xf275b8c400000000, 0xc812524a00000000,
    0x59833ae400000000, 0xab37f2cd00000000, 0x3aa69a6300000000,
    0x4f5e639e00000000, 0xdecf0b3000000000, 0x2c7bc31900000000,
    0xbdeaabb700000000, 0x19b366df00000000, 0x88220e7100000000,
    0x7a96c65800000000, 0xeb07aef600000000, 0x9eff570b00000000,
    0x0f6e3fa500000000, 0xfddaf78c00000000, 0x6c4b9f2200000000,
    0x562c75ac00000000, 0xc7bd1d0200000000, 0x3509d52b00000000,
    0xa498bd8500000000, 0xd160447800000000, 0x40f12cd600000000,
    0xb245e4ff00000000, 0x23d48c5100000000, 0xf4edfd5c00000000,
    0x657c95f200000000, 0x97c85ddb00000000, 0x0659357500000000,
    0x73a1cc8800000000, 0xe230a42600000000, 0x10846c0f00000000,
    0x811504a100000000, 0xbb72ee2f00000000, 0x2ae3868100000000,
    0xd8574ea800000000, 0x49c6260600000000, 0x3c3edffb00000000,
    0xadafb75500000000, 0x5f1b7f7c00000000, 0xce8a17d200000000,
    0x6ad3daba00000000, 0xfb42b21400000000, 0x09f67a3d00000000,
    0x9867129300000000, 0xed9feb6e00000000, 0x7c0e83c000000000,
    0x8eba4be900000000, 0x1f2b234700000000, 0x254cc9c900000000,
    0xb4dda16700000000, 0x4669694e00000000, 0xd7f801e000000000,
    0xa200f81d00000000, 0x339190b300000000, 0xc125589a00000000,
    0x50b4303400000000, 0x8996c24b00000000, 0x1807aae500000000,
    0xeab362cc00000000, 0x7b220a6200000000, 0x0edaf39f00000000,
    0x9f4b9b3100000000, 0x6dff531800000000, 0xfc6e3bb600000000,
    0xc609d13800000000, 0x5798b99600000000, 0xa52c71bf00000000,
    0x34bd191100000000, 0x4145e0ec00000000, 0xd0d4884200000000,
    0x2260406b00000000, 0xb3f128c500000000, 0x17a8e5ad00000000,
    0x86398d0300000000, 0x748d452a00000000, 0xe51c2d8400000000,
    0x90e4d47900000000, 0x0175bcd700000000, 0xf3c174fe00000000,
    0x62501c5000000000, 0x5837f6de00000000, 0xc9a69e7000000000,
    0x3b12565900000000, 0xaa833ef700000000, 0xdf7bc70a00000000,
    0x4eeaafa400000000, 0xbc5e678d00000000, 0x2dcf0f2300000000,
    0x0e1b837200000000, 0x9f8aebdc00000000, 0x6d3e23f500000000,
    0xfcaf4b5b00000000, 0x8957b2a600000000, 0x18c6da0800000000,
    0xea72122100000000, 0x7be37a8f00000000, 0x4184900100000000,
    0xd015f8af00000000, 0x22a1308600000000, 0xb330582800000000,
    0xc6c8a1d500000000, 0x5759c97b00000000, 0xa5ed015200000000,
    0x347c69fc00000000, 0x9025a49400000000, 0x01b4cc3a00000000,
    0xf300041300000000, 0x62916cbd00000000, 0x1769954000000000,
    0x86f8fdee00000000, 0x744c35c700000000, 0xe5dd5d6900000000,
    0xdfbab7e700000000, 0x4e2bdf4900000000, 0xbc9f176000000000,
    0x2d0e7fce00000000, 0x58f6863300000000, 0xc967ee9d00000000,
    0x3bd326b400000000, 0xaa424e1a00000000, 0x7360bc6500000000,
    0xe2f1d4cb00000000, 0x10451ce200000000, 0x81d4744c00000000,
    0xf42c8db100000000, 0x65bde51f00000000, 0x97092d3600000000,
    0x0698459800000000, 0x3cffaf1600000000, 0xad6ec7b800000000,
    0x5fda0f9100000000, 0xce4b673f00000000, 0xbbb39ec200000000,
    0x2a22f66c00000000, 0xd8963e4500000000, 0x490756eb00000000,
    0xed5e9b8300000000, 0x7ccff32d00000000, 0x8e7b3b0400000000,
    0x1fea53aa00000000, 0x6a12aa5700000000, 0xfb83c2f900000000,
    0x09370ad000000000, 0x98a6627e00000000, 0xa2c188f000000000,
    0x3350e05e00000000, 0xc1e4287700000000, 0x507540d900000000,
    0x258db92400000000, 0xb41cd18a00000000, 0x46a819a300000000,
    0xd739710d00000000}};

#else /* W == 4 */

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xccaa009e, 0x4225077d, 0x8e8f07e3, 0x844a0efa,
    0x48e00e64, 0xc66f0987, 0x0ac50919, 0xd3e51bb5, 0x1f4f1b2b,
    0x91c01cc8, 0x5d6a1c56, 0x57af154f, 0x9b0515d1, 0x158a1232,
    0xd92012ac, 0x7cbb312b, 0xb01131b5, 0x3e9e3656, 0xf23436c8,
    0xf8f13fd1, 0x345b3f4f, 0xbad438ac, 0x767e3832, 0xaf5e2a9e,
    0x63f42a00, 0xed7b2de3, 0x21d12d7d, 0x2b142464, 0xe7be24fa,
    0x69312319, 0xa59b2387, 0xf9766256, 0x35dc62c8, 0xbb53652b,
    0x77f965b5, 0x7d3c6cac, 0xb1966c32, 0x3f196bd1, 0xf3b36b4f,
    0x2a9379e3, 0xe639797d, 0x68b67e9e, 0xa41c7e00, 0xaed97719,
    0x62737787, 0xecfc7064, 0x205670fa, 0x85cd537d, 0x496753e3,
    0xc7e85400, 0x0b42549e, 0x01875d87, 0xcd2d5d19, 0x43a25afa,
    0x8f085a64, 0x562848c8, 0x9a824856, 0x140d4fb5, 0xd8a74f2b,
    0xd2624632, 0x1ec846ac, 0x9047414f, 0x5ced41d1, 0x299dc2ed,
    0xe537c273, 0x6bb8c590, 0xa712c50e, 0xadd7cc17, 0x617dcc89,
    0xeff2cb6a, 0x2358cbf4, 0xfa78d958, 0x36d2d9c6, 0xb85dde25,
    0x74f7debb, 0x7e32d7a2, 0xb298d73c, 0x3c17d0df, 0xf0bdd041,
    0x5526f3c6, 0x998cf358, 0x1703f4bb, 0xdba9f425, 0xd16cfd3c,
    0x1dc6fda2, 0x9349fa41, 0x5fe3fadf, 0x86c3e873, 0x4a69e8ed,
    0xc4e6ef0e, 0x084cef90, 0x0289e689, 0xce23e617, 0x40ace1f4,
    0x8c06e16a, 0xd0eba0bb, 0x1c41a025, 0x92cea7c6, 0x5e64a758,
    0x54a1ae41, 0x980baedf, 0x1684a93c, 0xda2ea9a2, 0x030ebb0e,
    0xcfa4bb90, 0x412bbc73, 0x8d81bced, 0x8744b5f4, 0x4beeb56a,
    0xc561b289, 0x09cbb217, 0xac509190, 0x60fa910e, 0xee7596ed,
    0x22df9673, 0x281a9f6a, 0xe4b09ff4, 0x6a3f9817, 0xa6959889,
    0x7fb58a25, 0xb31f8abb, 0x3d908d58, 0xf13a8dc6, 0xfbff84df,
    0x37558441, 0xb9da83a2, 0x7570833c, 0x533b85da, 0x9f918544,
    0x111e82a7, 0xddb48239, 0xd7718b20, 0x1bdb8bbe, 0x95548c5d,
    0x59fe8cc3, 0x80de9e6f, 0x4c749ef1, 0xc2fb9912, 0x0e51998c,
    0x04949095, 0xc83e900b, 0x46b197e8, 0x8a1b9776, 0x2f80b4f1,
    0xe32ab46f, 0x6da5b38c, 0xa10fb312, 0xabcaba0b, 0x6760ba95,
    0xe9efbd76, 0x2545bde8, 0xfc65af44, 0x30cfafda, 0xbe40a839,
    0x72eaa8a7, 0x782fa1be, 0xb485a120, 0x3a0aa6c3, 0xf6a0a65d,
    0xaa4de78c, 0x66e7e712, 0xe868e0f1, 0x24c2e06f, 0x2e07e976,
    0xe2ade9e8, 0x6c22ee0b, 0xa088ee95, 0x79a8fc39, 0xb502fca7,
    0x3b8dfb44, 0xf727fbda, 0xfde2f2c3, 0x3148f25d, 0xbfc7f5be,
    0x736df520, 0xd6f6d6a7, 0x1a5cd639, 0x94d3d1da, 0x5879d144,
    0x52bcd85d, 0x9e16d8c3, 0x1099df20, 0xdc33dfbe, 0x0513cd12,
    0xc9b9cd8c, 0x4736ca6f, 0x8b9ccaf1, 0x8159c3e8, 0x4df3c376,
    0xc37cc495, 0x0fd6c40b, 0x7aa64737, 0xb60c47a9, 0x3883404a,
    0xf42940d4, 0xfeec49cd, 0x32464953, 0xbcc94eb0, 0x70634e2e,
    0xa9435c82, 0x65e95c1c, 0xeb665bff, 0x27cc5b61, 0x2d095278,
    0xe1a352e6, 0x6f2c5505, 0xa386559b, 0x061d761c, 0xcab77682,
    0x44387161, 0x889271ff, 0x825778e6, 0x4efd7878, 0xc0727f9b,
    0x0cd87f05, 0xd5f86da9, 0x19526d37, 0x97dd6ad4, 0x5b776a4a,
    0x51b26353, 0x9d1863cd, 0x1397642e, 0xdf3d64b0, 0x83d02561,
    0x4f7a25ff, 0xc1f5221c, 0x0d5f2282, 0x079a2b9b, 0xcb302b05,
    0x45bf2ce6, 0x89152c78, 0x50353ed4, 0x9c9f3e4a, 0x121039a9,
    0xdeba3937, 0xd47f302e, 0x18d530b0, 0x965a3753, 0x5af037cd,
    0xff6b144a, 0x33c114d4, 0xbd4e1337, 0x71e413a9, 0x7b211ab0,
    0xb78b1a2e, 0x39041dcd, 0xf5ae1d53, 0x2c8e0fff, 0xe0240f61,
    0x6eab0882, 0xa201081c, 0xa8c40105, 0x646e019b, 0xeae10678,
    0x264b06e6},
   {0x00000000, 0xa6770bb4, 0x979f1129, 0x31e81a9d, 0xf44f2413,
    0x52382fa7, 0x63d0353a, 0xc5a73e8e, 0x33ef4e67, 0x959845d3,
    0xa4705f4e, 0x020754fa, 0xc7a06a74, 0x61d761c0, 0x503f7b5d,
    0xf64870e9, 0x67de9cce, 0xc1a9977a, 0xf0418de7, 0x56368653,
    0x9391b8dd, 0x35e6b369, 0x040ea9f4, 0xa279a240, 0x5431d2a9,
    0xf246d91d, 0xc3aec380, 0x65d9c834, 0xa07ef6ba, 0x0609fd0e,
    0x37e1e793, 0x9196ec27, 0xcfbd399c, 0x69ca3228, 0x582228b5,
    0xfe552301, 0x3bf21d8f, 0x9d85163b, 0xac6d0ca6, 0x0a1a0712,
    0xfc5277fb, 0x5a257c4f, 0x6bcd66d2, 0xcdba6d66, 0x081d53e8,
    0xae6a585c, 0x9f8242c1, 0x39f54975, 0xa863a552, 0x0e14aee6,
    0x3ffcb47b, 0x998bbfcf, 0x5c2c8141, 0xfa5b8af5, 0xcbb39068,
    0x6dc49bdc, 0x9b8ceb35, 0x3dfbe081, 0x0c13fa1c, 0xaa64f1a8,
    0x6fc3cf26, 0xc9b4c492, 0xf85cde0f, 0x5e2bd5bb, 0x440b7579,
    0xe27c7ecd, 0xd3946450, 0x75e36fe4, 0xb044516a, 0x16335ade,
    0x27db4043, 0x81ac4bf7, 0x77e43b1e, 0xd19330aa, 0xe07b2a37,
    0x460c2183, 0x83ab1f0d, 0x25dc14b9, 0x14340e24, 0xb2430590,
    0x23d5e9b7, 0x85a2e203, 0xb44af89e, 0x123df32a, 0xd79acda4,
    0x71edc610, 0x4005dc8d, 0xe672d739, 0x103aa7d0, 0xb64dac64,
    0x87a5b6f9, 0x21d2bd4d, 0xe47583c3, 0x42028877, 0x73ea92ea,
    0xd59d995e, 0x8bb64ce5, 0x2dc14751, 0x1c295dcc, 0xba5e5678,
    0x7ff968f6, 0xd98e6342, 0xe86679df, 0x4e11726b, 0xb8590282,
    0x1e2e0936, 0x2fc613ab, 0x89b1181f, 0x4c162691, 0xea612d25,
    0xdb8937b8, 0x7dfe3c0c, 0xec68d02b, 0x4a1fdb9f, 0x7bf7c102,
    0xdd80cab6, 0x1827f438, 0xbe50ff8c, 0x8fb8e511, 0x29cfeea5,
    0xdf879e4c, 0x79f095f8, 0x48188f65, 0xee6f84d1, 0x2bc8ba5f,
    0x8dbfb1eb, 0xbc57ab76, 0x1a20a0c2, 0x8816eaf2, 0x2e61e146,
    0x1f89fbdb, 0xb9fef06f, 0x7c59cee1, 0xda2ec555, 0xebc6dfc8,
    0x4db1d47c, 0xbbf9a495, 0x1d8eaf21, 0x2c66b5bc, 0x8a11be08,
    0x4fb68086, 0xe9c18b32, 0xd82991af, 0x7e5e9a1b, 0xefc8763c,
    0x49bf7d88, 0x78576715, 0xde206ca1, 0x1b87522f, 0xbdf0599b,
    0x8c184306, 0x2a6f48b2, 0xdc27385b, 0x7a5033ef, 0x4bb82972,
    0xedcf22c6, 0x28681c48, 0x8e1f17fc, 0xbff70d61, 0x198006d5,
    0x47abd36e, 0xe1dcd8da, 0xd034c247, 0x7643c9f3, 0xb3e4f77d,
    0x1593fcc9, 0x247be654, 0x820cede0, 0x74449d09, 0xd23396bd,
    0xe3db8c20, 0x45ac8794, 0x800bb91a, 0x267cb2ae, 0x1794a833,
    0xb1e3a387, 0x20754fa0, 0x86024414, 0xb7ea5e89, 0x119d553d,
    0xd43a6bb3, 0x724d6007, 0x43a57a9a, 0xe5d2712e, 0x139a01c7,
    0xb5ed0a73, 0x840510ee, 0x22721b5a, 0xe7d525d4, 0x41a22e60,
    0x704a34fd, 0xd63d3f49, 0xcc1d9f8b, 0x6a6a943f, 0x5b828ea2,
    0xfdf58516, 0x3852bb98, 0x9e25b02c, 0xafcdaab1, 0x09baa105,
    0xfff2d1ec, 0x5985da58, 0x686dc0c5, 0xce1acb71, 0x0bbdf5ff,
    0xadcafe4b, 0x9c22e4d6, 0x3a55ef62, 0xabc30345, 0x0db408f1,
    0x3c5c126c, 0x9a2b19d8, 0x5f8c2756, 0xf9fb2ce2, 0xc813367f,
    0x6e643dcb, 0x982c4d22, 0x3e5b4696, 0x0fb35c0b, 0xa9c457bf,
    0x6c636931, 0xca146285, 0xfbfc7818, 0x5d8b73ac, 0x03a0a617,
    0xa5d7ada3, 0x943fb73e, 0x3248bc8a, 0xf7ef8204, 0x519889b0,
    0x6070932d, 0xc6079899, 0x304fe870, 0x9638e3c4, 0xa7d0f959,
    0x01a7f2ed, 0xc400cc63, 0x6277c7d7, 0x539fdd4a, 0xf5e8d6fe,
    0x647e3ad9, 0xc209316d, 0xf3e12bf0, 0x55962044, 0x90311eca,
    0x3646157e, 0x07ae0fe3, 0xa1d90457, 0x579174be, 0xf1e67f0a,
    0xc00e6597, 0x66796e23, 0xa3de50ad, 0x05a95b19, 0x34414184,
    0x92364a30},
   {0x00000000, 0xcb5cd3a5, 0x4dc8a10b, 0x869472ae, 0x9b914216,
    0x50cd91b3, 0xd659e31d, 0x1d0530b8, 0xec53826d, 0x270f51c8,
    0xa19b2366, 0x6ac7f0c3, 0x77c2c07b, 0xbc9e13de, 0x3a0a6170,
    0xf156b2d5, 0x03d6029b, 0xc88ad13e, 0x4e1ea390, 0x85427035,
    0x9847408d, 0x531b9328, 0xd58fe186, 0x1ed33223, 0xef8580f6,
    0x24d95353, 0xa24d21fd, 0x6911f258, 0x7414c2e0, 0xbf481145,
    0x39dc63eb, 0xf280b04e, 0x07ac0536, 0xccf0d693, 0x4a64a43d,
    0x81387798, 0x9c3d4720, 0x57619485, 0xd1f5e62b, 0x1aa9358e,
    0xebff875b, 0x20a354fe, 0xa6372650, 0x6d6bf5f5, 0x706ec54d,
    0xbb3216e8, 0x3da66446, 0xf6fab7e3, 0x047a07ad, 0xcf26d408,
    0x49b2a6a6, 0x82ee7503, 0x9feb45bb, 0x54b7961e, 0xd223e4b0,
    0x197f3715, 0xe82985c0, 0x23755665, 0xa5e124cb, 0x6ebdf76e,
    0x73b8c7d6, 0xb8e41473, 0x3e7066dd, 0xf52cb578, 0x0f580a6c,
    0xc404d9c9, 0x4290ab67, 0x89cc78c2, 0x94c9487a, 0x5f959bdf,
    0xd901e971, 0x125d3ad4, 0xe30b8801, 0x28575ba4, 0xaec3290a,
    0x659ffaaf, 0x789aca17, 0xb3c619b2, 0x35526b1c, 0xfe0eb8b9,
    0x0c8e08f7, 0xc7d2db52, 0x4146a9fc, 0x8a1a7a59, 0x971f4ae1,
    0x5c439944, 0xdad7ebea, 0x118b384f, 0xe0dd8a9a, 0x2b81593f,
    0xad152b91, 0x6649f834, 0x7b4cc88c, 0xb0101b29, 0x36846987,
    0xfdd8ba22, 0x08f40f5a, 0xc3a8dcff, 0x453cae51, 0x8e607df4,
    0x93654d4c, 0x58399ee9, 0xdeadec47, 0x15f13fe2, 0xe4a78d37,
    0x2ffb5e92, 0xa96f2c3c, 0x6233ff99, 0x7f36cf21, 0xb46a1c84,
    0x32fe6e2a, 0xf9a2bd8f, 0x0b220dc1, 0xc07ede64, 0x46eaacca,
    0x8db67f6f, 0x90b34fd7, 0x5bef9c72, 0xdd7beedc, 0x16273d79,
    0xe7718fac, 0x2c2d5c09, 0xaab92ea7, 0x61e5fd02, 0x7ce0cdba,
    0xb7bc1e1f, 0x31286cb1, 0xfa74bf14, 0x1eb014d8, 0xd5ecc77d,
    0x5378b5d3, 0x98246676, 0x852156ce, 0x4e7d856b, 0xc8e9f7c5,
    0x03b52460, 0xf2e396b5, 0x39bf4510, 0xbf2b37be, 0x7477e41b,
    0x6972d4a3, 0xa22e0706, 0x24ba75a8, 0xefe6a60d, 0x1d661643,
    0xd63ac5e6, 0x50aeb748, 0x9bf264ed, 0x86f75455, 0x4dab87f0,
    0xcb3ff55e, 0x006326fb, 0xf135942e, 0x3a69478b, 0xbcfd3525,
    0x77a1e680, 0x6aa4d638, 0xa1f8059d, 0x276c7733, 0xec30a496,
    0x191c11ee, 0xd240c24b, 0x54d4b0e5, 0x9f886340, 0x828d53f8,
    0x49d1805d, 0xcf45f2f3, 0x04192156, 0xf54f9383, 0x3e134026,
    0xb8873288, 0x73dbe12d, 0x6eded195, 0xa5820230, 0x2316709e,
    0xe84aa33b, 0x1aca1375, 0xd196c0d0, 0x5702b27e, 0x9c5e61db,
    0x815b5163, 0x4a0782c6, 0xcc93f068, 0x07cf23cd, 0xf6999118,
    0x3dc542bd, 0xbb513013, 0x700de3b6, 0x6d08d30e, 0xa65400ab,
    0x20c07205, 0xeb9ca1a0, 0x11e81eb4, 0xdab4cd11, 0x5c20bfbf,
    0x977c6c1a, 0x8a795ca2, 0x41258f07, 0xc7b1fda9, 0x0ced2e0c,
    0xfdbb9cd9, 0x36e74f7c, 0xb0733dd2, 0x7b2fee77, 0x662adecf,
    0xad760d6a, 0x2be27fc4, 0xe0beac61, 0x123e1c2f, 0xd962cf8a,
    0x5ff6bd24, 0x94aa6e81, 0x89af5e39, 0x42f38d9c, 0xc467ff32,
    0x0f3b2c97, 0xfe6d9e42, 0x35314de7, 0xb3a53f49, 0x78f9ecec,
    0x65fcdc54, 0xaea00ff1, 0x28347d5f, 0xe368aefa, 0x16441b82,
    0xdd18c827, 0x5b8cba89, 0x90d0692c, 0x8dd55994, 0x46898a31,
    0xc01df89f, 0x0b412b3a, 0xfa1799ef, 0x314b4a4a, 0xb7df38e4,
    0x7c83eb41, 0x6186dbf9, 0xaada085c, 0x2c4e7af2, 0xe712a957,
    0x15921919, 0xdececabc, 0x585ab812, 0x93066bb7, 0x8e035b0f,
    0x455f88aa, 0xc3cbfa04, 0x089729a1, 0xf9c19b74, 0x329d48d1,
    0xb4093a7f, 0x7f55e9da, 0x6250d962, 0xa90c0ac7, 0x2f987869,
    0xe4c4abcc},
   {0x00000000, 0x3d6029b0, 0x7ac05360, 0x47a07ad0, 0xf580a6c0,
    0xc8e08f70, 0x8f40f5a0, 0xb220dc10, 0x30704bc1, 0x0d106271,
    0x4ab018a1, 0x77d03111, 0xc5f0ed01, 0xf890c4b1, 0xbf30be61,
    0x825097d1, 0x60e09782, 0x5d80be32, 0x1a20c4e2, 0x2740ed52,
    0x95603142, 0xa80018f2, 0xefa06222, 0xd2c04b92, 0x5090dc43,
    0x6df0f5f3, 0x2a508f23, 0x1730a693, 0xa5107a83, 0x98705333,
    0xdfd029e3, 0xe2b00053, 0xc1c12f04, 0xfca106b4, 0xbb017c64,
    0x866155d4, 0x344189c4, 0x0921a074, 0x4e81daa4, 0x73e1f314,
    0xf1b164c5, 0xccd14d75, 0x8b7137a5, 0xb6111e15, 0x0431c205,
    0x3951ebb5, 0x7ef19165, 0x4391b8d5, 0xa121b886, 0x9c419136,
    0xdbe1ebe6, 0xe681c256, 0x54a11e46, 0x69c137f6, 0x2e614d26,
    0x13016496, 0x9151f347, 0xac31daf7, 0xeb91a027, 0xd6f18997,
    0x64d15587, 0x59b17c37, 0x1e1106e7, 0x23712f57, 0x58f35849,
    0x659371f9, 0x22330b29, 0x1f532299, 0xad73fe89, 0x9013d739,
    0xd7b3ade9, 0xead38459, 0x68831388, 0x55e33a38, 0x124340e8,
    0x2f236958, 0x9d03b548, 0xa0639cf8, 0xe7c3e628, 0xdaa3cf98,
    0x3813cfcb, 0x0573e67b, 0x42d39cab, 0x7fb3b51b, 0xcd93690b,
    0xf0f340bb, 0xb7533a6b, 0x8a3313db, 0x0863840a, 0x3503adba,
    0x72a3d76a, 0x4fc3feda, 0xfde322ca, 0xc0830b7a, 0x872371aa,
    0xba43581a, 0x9932774d, 0xa4525efd, 0xe3f2242d, 0xde920d9d,
    0x6cb2d18d, 0x51d2f83d, 0x167282ed, 0x2b12ab5d, 0xa9423c8c,
    0x9422153c, 0xd3826fec, 0xeee2465c, 0x5cc29a4c, 0x61a2b3fc,
    0x2602c92c, 0x1b62e09c, 0xf9d2e0cf, 0xc4b2c97f, 0x8312b3af,
    0xbe729a1f, 0x0c52460f, 0x31326fbf, 0x7692156f, 0x4bf23cdf,
    0xc9a2ab0e, 0xf4c282be, 0xb362f86e, 0x8e02d1de, 0x3c220dce,
    0x0142247e, 0x46e25eae, 0x7b82771e, 0xb1e6b092, 0x8c869922,
    0xcb26e3f2, 0xf646ca42, 0x44661652, 0x79063fe2, 0x3ea64532,
    0x03c66c82, 0x8196fb53, 0xbcf6d2e3, 0xfb56a833, 0xc6368183,
    0x74165d93, 0x49767423, 0x0ed60ef3, 0x33b62743, 0xd1062710,
    0xec660ea0, 0xabc67470, 0x96a65dc0, 0x248681d0, 0x19e6a860,
    0x5e46d2b0, 0x6326fb00, 0xe1766cd1, 0xdc164561, 0x9bb63fb1,
    0xa6d61601, 0x14f6ca11, 0x2996e3a1, 0x6e369971, 0x5356b0c1,
    0x70279f96, 0x4d47b626, 0x0ae7ccf6, 0x3787e546, 0x85a73956,
    0xb8c710e6, 0xff676a36, 0xc2074386, 0x4057d457, 0x7d37fde7,
    0x3a978737, 0x07f7ae87, 0xb5d77297, 0x88b75b27, 0xcf1721f7,
    0xf2770847, 0x10c70814, 0x2da721a4, 0x6a075b74, 0x576772c4,
    0xe547aed4, 0xd8278764, 0x9f87fdb4, 0xa2e7d404, 0x20b743d5,
    0x1dd76a65, 0x5a7710b5, 0x67173905, 0xd537e515, 0xe857cca5,
    0xaff7b675, 0x92979fc5, 0xe915e8db, 0xd475c16b, 0x93d5bbbb,
    0xaeb5920b, 0x1c954e1b, 0x21f567ab, 0x66551d7b, 0x5b3534cb,
    0xd965a31a, 0xe4058aaa, 0xa3a5f07a, 0x9ec5d9ca, 0x2ce505da,
    0x11852c6a, 0x562556ba, 0x6b457f0a, 0x89f57f59, 0xb49556e9,
    0xf3352c39, 0xce550589, 0x7c75d999, 0x4115f029, 0x06b58af9,
    0x3bd5a349, 0xb9853498, 0x84e51d28, 0xc34567f8, 0xfe254e48,
    0x4c059258, 0x7165bbe8, 0x36c5c138, 0x0ba5e888, 0x28d4c7df,
    0x15b4ee6f, 0x521494bf, 0x6f74bd0f, 0xdd54611f, 0xe03448af,
    0xa794327f, 0x9af41bcf, 0x18a48c1e, 0x25c4a5ae, 0x6264df7e,
    0x5f04f6ce, 0xed242ade, 0xd044036e, 0x97e479be, 0xaa84500e,
    0x4834505d, 0x755479ed, 0x32f4033d, 0x0f942a8d, 0xbdb4f69d,
    0x80d4df2d, 0xc774a5fd, 0xfa148c4d, 0x78441b9c, 0x4524322c,
    0x028448fc, 0x3fe4614c, 0x8dc4bd5c, 0xb0a494ec, 0xf704ee3c,
    0xca64c78c}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x00000000, 0xb029603d, 0x6053c07a, 0xd07aa047, 0xc0a680f5,
    0x708fe0c8, 0xa0f5408f, 0x10dc20b2, 0xc14b7030, 0x7162100d,
    0xa118b04a, 0x1131d077, 0x01edf0c5, 0xb1c490f8, 0x61be30bf,
    0xd1975082, 0x8297e060, 0x32be805d, 0xe2c4201a, 0x52ed4027,
    0x42316095, 0xf21800a8, 0x2262a0ef, 0x924bc0d2, 0x43dc9050,
    0xf3f5f06d, 0x238f502a, 0x93a63017, 0x837a10a5, 0x33537098,
    0xe329d0df, 0x5300b0e2, 0x042fc1c1, 0xb406a1fc, 0x647c01bb,
    0xd4556186, 0xc4894134, 0x74a02109, 0xa4da814e, 0x14f3e173,
    0xc564b1f1, 0x754dd1cc, 0xa537718b, 0x151e11b6, 0x05c23104,
    0xb5eb5139, 0x6591f17e, 0xd5b89143, 0x86b821a1, 0x3691419c,
    0xe6ebe1db, 0x56c281e6, 0x461ea154, 0xf637c169, 0x264d612e,
    0x96640113, 0x47f35191, 0xf7da31ac, 0x27a091eb, 0x9789f1d6,
    0x8755d164, 0x377cb159, 0xe706111e, 0x572f7123, 0x4958f358,
    0xf9719365, 0x290b3322, 0x9922531f, 0x89fe73ad, 0x39d71390,
    0xe9adb3d7, 0x5984d3ea, 0x88138368, 0x383ae355, 0xe8404312,
    0x5869232f, 0x48b5039d, 0xf89c63a0, 0x28e6c3e7, 0x98cfa3da,
    0xcbcf1338, 0x7be67305, 0xab9cd342, 0x1bb5b37f, 0x0b6993cd,
    0xbb40f3f0, 0x6b3a53b7, 0xdb13338a, 0x0a846308, 0xbaad0335,
    0x6ad7a372, 0xdafec34f, 0xca22e3fd, 0x7a0b83c0, 0xaa712387,
    0x1a5843ba, 0x4d773299, 0xfd5e52a4, 0x2d24f2e3, 0x9d0d92de,
    0x8dd1b26c, 0x3df8d251, 0xed827216, 0x5dab122b, 0x8c3c42a9,
    0x3c152294, 0xec6f82d3, 0x5c46e2ee, 0x4c9ac25c, 0xfcb3a261,
    0x2cc90226, 0x9ce0621b, 0xcfe0d2f9, 0x7fc9b2c4, 0xafb31283,
    0x1f9a72be, 0x0f46520c, 0xbf6f3231, 0x6f159276, 0xdf3cf24b,
    0x0eaba2c9, 0xbe82c2f4, 0x6ef862b3, 0xded1028e, 0xce0d223c,
    0x7e244201, 0xae5ee246, 0x1e77827b, 0x92b0e6b1, 0x2299868c,
    0xf2e326cb, 0x42ca46f6, 0x52166644, 0xe23f0679, 0x3245a63e,
    0x826cc603, 0x53fb9681, 0xe3d2f6bc, 0x33a856fb, 0x838136c6,
    0x935d1674, 0x23747649, 0xf30ed60e, 0x4327b633, 0x102706d1,
    0xa00e66ec, 0x7074c6ab, 0xc05da696, 0xd0818624, 0x60a8e619,
    0xb0d2465e, 0x00fb2663, 0xd16c76e1, 0x614516dc, 0xb13fb69b,
    0x0116d6a6, 0x11caf614, 0xa1e39629, 0x7199366e, 0xc1b05653,
    0x969f2770, 0x26b6474d, 0xf6cce70a, 0x46e58737, 0x5639a785,
    0xe610c7b8, 0x366a67ff, 0x864307c2, 0x57d45740, 0xe7fd377d,
    0x3787973a, 0x87aef707, 0x9772d7b5, 0x275bb788, 0xf72117cf,
    0x470877f2, 0x1408c710, 0xa421a72d, 0x745b076a, 0xc4726757,
    0xd4ae47e5, 0x648727d8, 0xb4fd879f, 0x04d4e7a2, 0xd543b720,
    0x656ad71d, 0xb510775a, 0x05391767, 0x15e537d5, 0xa5cc57e8,
    0x75b6f7af, 0xc59f9792, 0xdbe815e9, 0x6bc175d4, 0xbbbbd593,
    0x0b92b5ae, 0x1b4e951c, 0xab67f521, 0x7b1d5566, 0xcb34355b,
    0x1aa365d9, 0xaa8a05e4, 0x7af0a5a3, 0xcad9c59e, 0xda05e52c,
    0x6a2c8511, 0xba562556, 0x0a7f456b, 0x597ff589, 0xe95695b4,
    0x392c35f3, 0x890555ce, 0x99d9757c, 0x29f01541, 0xf98ab506,
    0x49a3d53b, 0x983485b9, 0x281de584, 0xf86745c3, 0x484e25fe,
    0x5892054c, 0xe8bb6571, 0x38c1c536, 0x88e8a50b, 0xdfc7d428,
    0x6feeb415, 0xbf941452, 0x0fbd746f, 0x1f6154dd, 0xaf4834e0,
    0x7f3294a7, 0xcf1bf49a, 0x1e8ca418, 0xaea5c425, 0x7edf6462,
    0xcef6045f, 0xde2a24ed, 0x6e0344d0, 0xbe79e497, 0x0e5084aa,
    0x5d503448, 0xed795475, 0x3d03f432, 0x8d2a940f, 0x9df6b4bd,
    0x2ddfd480, 0xfda574c7, 0x4d8c14fa, 0x9c1b4478, 0x2c322445,
    0xfc488402, 0x4c61e43f, 0x5cbdc48d, 0xec94a4b0, 0x3cee04f7,
    0x8cc764ca},
   {0x00000000, 0xa5d35ccb, 0x0ba1c84d, 0xae729486, 0x1642919b,
    0xb391cd50, 0x1de359d6, 0xb830051d, 0x6d8253ec, 0xc8510f27,
    0x66239ba1, 0xc3f0c76a, 0x7bc0c277, 0xde139ebc, 0x70610a3a,
    0xd5b256f1, 0x9b02d603, 0x3ed18ac8, 0x90a31e4e, 0x35704285,
    0x8d404798, 0x28931b53, 0x86e18fd5, 0x2332d31e, 0xf68085ef,
    0x5353d924, 0xfd214da2, 0x58f21169, 0xe0c21474, 0x451148bf,
    0xeb63dc39, 0x4eb080f2, 0x3605ac07, 0x93d6f0cc, 0x3da4644a,
    0x98773881, 0x20473d9c, 0x85946157, 0x2be6f5d1, 0x8e35a91a,
    0x5b87ffeb, 0xfe54a320, 0x502637a6, 0xf5f56b6d, 0x4dc56e70,
    0xe81632bb, 0x4664a63d, 0xe3b7faf6, 0xad077a04, 0x08d426cf,
    0xa6a6b249, 0x0375ee82, 0xbb45eb9f, 0x1e96b754, 0xb0e423d2,
    0x15377f19, 0xc08529e8, 0x65567523, 0xcb24e1a5, 0x6ef7bd6e,
    0xd6c7b873, 0x7314e4b8, 0xdd66703e, 0x78b52cf5, 0x6c0a580f,
    0xc9d904c4, 0x67ab9042, 0xc278cc89, 0x7a48c994, 0xdf9b955f,
    0x71e901d9, 0xd43a5d12, 0x01880be3, 0xa45b5728, 0x0a29c3ae,
    0xaffa9f65, 0x17ca9a78, 0xb219c6b3, 0x1c6b5235, 0xb9b80efe,
    0xf7088e0c, 0x52dbd2c7, 0xfca94641, 0x597a1a8a, 0xe14a1f97,
    0x4499435c, 0xeaebd7da, 0x4f388b11, 0x9a8adde0, 0x3f59812b,
    0x912b15ad, 0x34f84966, 0x8cc84c7b, 0x291b10b0, 0x87698436,
    0x22bad8fd, 0x5a0ff408, 0xffdca8c3, 0x51ae3c45, 0xf47d608e,
    0x4c4d6593, 0xe99e3958, 0x47ecadde, 0xe23ff115, 0x378da7e4,
    0x925efb2f, 0x3c2c6fa9, 0x99ff3362, 0x21cf367f, 0x841c6ab4,
    0x2a6efe32, 0x8fbda2f9, 0xc10d220b, 0x64de7ec0, 0xcaacea46,
    0x6f7fb68d, 0xd74fb390, 0x729cef5b, 0xdcee7bdd, 0x793d2716,
    0xac8f71e7, 0x095c2d2c, 0xa72eb9aa, 0x02fde561, 0xbacde07c,
    0x1f1ebcb7, 0xb16c2831, 0x14bf74fa, 0xd814b01e, 0x7dc7ecd5,
    0xd3b57853, 0x76662498, 0xce562185, 0x6b857d4e, 0xc5f7e9c8,
    0x6024b503, 0xb596e3f2, 0x1045bf39, 0xbe372bbf, 0x1be47774,
    0xa3d47269, 0x06072ea2, 0xa875ba24, 0x0da6e6ef, 0x4316661d,
    0xe6c53ad6, 0x48b7ae50, 0xed64f29b, 0x5554f786, 0xf087ab4d,
    0x5ef53fcb, 0xfb266300, 0x2e9435f1, 0x8b47693a, 0x2535fdbc,
    0x80e6a177, 0x38d6a46a, 0x9d05f8a1, 0x33776c27, 0x96a430ec,
    0xee111c19, 0x4bc240d2, 0xe5b0d454, 0x4063889f, 0xf8538d82,
    0x5d80d149, 0xf3f245cf, 0x56211904, 0x83934ff5, 0x2640133e,
    0x883287b8, 0x2de1db73, 0x95d1de6e, 0x300282a5, 0x9e701623,
    0x3ba34ae8, 0x7513ca1a, 0xd0c096d1, 0x7eb20257, 0xdb615e9c,
    0x63515b81, 0xc682074a, 0x68f093cc, 0xcd23cf07, 0x189199f6,
    0xbd42c53d, 0x133051bb, 0xb6e30d70, 0x0ed3086d, 0xab0054a6,
    0x0572c020, 0xa0a19ceb, 0xb41ee811, 0x11cdb4da, 0xbfbf205c,
    0x1a6c7c97, 0xa25c798a, 0x078f2541, 0xa9fdb1c7, 0x0c2eed0c,
    0xd99cbbfd, 0x7c4fe736, 0xd23d73b0, 0x77ee2f7b, 0xcfde2a66,
    0x6a0d76ad, 0xc47fe22b, 0x61acbee0, 0x2f1c3e12, 0x8acf62d9,
    0x24bdf65f, 0x816eaa94, 0x395eaf89, 0x9c8df342, 0x32ff67c4,
    0x972c3b0f, 0x429e6dfe, 0xe74d3135, 0x493fa5b3, 0xececf978,
    0x54dcfc65, 0xf10fa0ae, 0x5f7d3428, 0xfaae68e3, 0x821b4416,
    0x27c818dd, 0x89ba8c5b, 0x2c69d090, 0x9459d58d, 0x318a8946,
    0x9ff81dc0, 0x3a2b410b, 0xef9917fa, 0x4a4a4b31, 0xe438dfb7,
    0x41eb837c, 0xf9db8661, 0x5c08daaa, 0xf27a4e2c, 0x57a912e7,
    0x19199215, 0xbccacede, 0x12b85a58, 0xb76b0693, 0x0f5b038e,
    0xaa885f45, 0x04facbc3, 0xa1299708, 0x749bc1f9, 0xd1489d32,
    0x7f3a09b4, 0xdae9557f, 0x62d95062, 0xc70a0ca9, 0x6978982f,
    0xccabc4e4},
   {0x00000000, 0xb40b77a6, 0x29119f97, 0x9d1ae831, 0x13244ff4,
    0xa72f3852, 0x3a35d063, 0x8e3ea7c5, 0x674eef33, 0xd3459895,
    0x4e5f70a4, 0xfa540702, 0x746aa0c7, 0xc061d761, 0x5d7b3f50,
    0xe97048f6, 0xce9cde67, 0x7a97a9c1, 0xe78d41f0, 0x53863656,
    0xddb89193, 0x69b3e635, 0xf4a90e04, 0x40a279a2, 0xa9d23154,
    0x1dd946f2, 0x80c3aec3, 0x34c8d965, 0xbaf67ea0, 0x0efd0906,
    0x93e7e137, 0x27ec9691, 0x9c39bdcf, 0x2832ca69, 0xb5282258,
    0x012355fe, 0x8f1df23b, 0x3b16859d, 0xa60c6dac, 0x12071a0a,
    0xfb7752fc, 0x4f7c255a, 0xd266cd6b, 0x666dbacd, 0xe8531d08,
    0x5c586aae, 0xc142829f, 0x7549f539, 0x52a563a8, 0xe6ae140e,
    0x7bb4fc3f, 0xcfbf8b99, 0x41812c5c, 0xf58a5bfa, 0x6890b3cb,
    0xdc9bc46d, 0x35eb8c9b, 0x81e0fb3d, 0x1cfa130c, 0xa8f164aa,
    0x26cfc36f, 0x92c4b4c9, 0x0fde5cf8, 0xbbd52b5e, 0x79750b44,
    0xcd7e7ce2, 0x506494d3, 0xe46fe375, 0x6a5144b0, 0xde5a3316,
    0x4340db27, 0xf74bac81, 0x1e3be477, 0xaa3093d1, 0x372a7be0,
    0x83210c46, 0x0d1fab83, 0xb914dc25, 0x240e3414, 0x900543b2,
    0xb7e9d523, 0x03e2a285, 0x9ef84ab4, 0x2af33d12, 0xa4cd9ad7,
    0x10c6ed71, 0x8ddc0540, 0x39d772e6, 0xd0a73a10, 0x64ac4db6,
    0xf9b6a587, 0x4dbdd221, 0xc38375e4, 0x77880242, 0xea92ea73,
    0x5e999dd5, 0xe54cb68b, 0x5147c12d, 0xcc5d291c, 0x78565eba,
    0xf668f97f, 0x42638ed9, 0xdf7966e8, 0x6b72114e, 0x820259b8,
    0x36092e1e, 0xab13c62f, 0x1f18b189, 0x9126164c, 0x252d61ea,
    0xb83789db, 0x0c3cfe7d, 0x2bd068ec, 0x9fdb1f4a, 0x02c1f77b,
    0xb6ca80dd, 0x38f42718, 0x8cff50be, 0x11e5b88f, 0xa5eecf29,
    0x4c9e87df, 0xf895f079, 0x658f1848, 0xd1846fee, 0x5fbac82b,
    0xebb1bf8d, 0x76ab57bc, 0xc2a0201a, 0xf2ea1688, 0x46e1612e,
    0xdbfb891f, 0x6ff0feb9, 0xe1ce597c, 0x55c52eda, 0xc8dfc6eb,
    0x7cd4b14d, 0x95a4f9bb, 0x21af8e1d, 0xbcb5662c, 0x08be118a,
    0x8680b64f, 0x328bc1e9, 0xaf9129d8, 0x1b9a5e7e, 0x3c76c8ef,
    0x887dbf49, 0x15675778, 0xa16c20de, 0x2f52871b, 0x9b59f0bd,
    0x0643188c, 0xb2486f2a, 0x5b3827dc, 0xef33507a, 0x7229b84b,
    0xc622cfed, 0x481c6828, 0xfc171f8e, 0x610df7bf, 0xd5068019,
    0x6ed3ab47, 0xdad8dce1, 0x47c234d0, 0xf3c94376, 0x7df7e4b3,
    0xc9fc9315, 0x54e67b24, 0xe0ed0c82, 0x099d4474, 0xbd9633d2,
    0x208cdbe3, 0x9487ac45, 0x1ab90b80, 0xaeb27c26, 0x33a89417,
    0x87a3e3b1, 0xa04f7520, 0x14440286, 0x895eeab7, 0x3d559d11,
    0xb36b3ad4, 0x07604d72, 0x9a7aa543, 0x2e71d2e5, 0xc7019a13,
    0x730aedb5, 0xee100584, 0x5a1b7222, 0xd425d5e7, 0x602ea241,
    0xfd344a70, 0x493f3dd6, 0x8b9f1dcc, 0x3f946a6a, 0xa28e825b,
    0x1685f5fd, 0x98bb5238, 0x2cb0259e, 0xb1aacdaf, 0x05a1ba09,
    0xecd1f2ff, 0x58da8559, 0xc5c06d68, 0x71cb1ace, 0xfff5bd0b,
    0x4bfecaad, 0xd6e4229c, 0x62ef553a, 0x4503c3ab, 0xf108b40d,
    0x6c125c3c, 0xd8192b9a, 0x56278c5f, 0xe22cfbf9, 0x7f3613c8,
    0xcb3d646e, 0x224d2c98, 0x96465b3e, 0x0b5cb30f, 0xbf57c4a9,
    0x3169636c, 0x856214ca, 0x1878fcfb, 0xac738b5d, 0x17a6a003,
    0xa3add7a5, 0x3eb73f94, 0x8abc4832, 0x0482eff7, 0xb0899851,
    0x2d937060, 0x999807c6, 0x70e84f30, 0xc4e33896, 0x59f9d0a7,
    0xedf2a701, 0x63cc00c4, 0xd7c77762, 0x4add9f53, 0xfed6e8f5,
    0xd93a7e64, 0x6d3109c2, 0xf02be1f3, 0x44209655, 0xca1e3190,
    0x7e154636, 0xe30fae07, 0x5704d9a1, 0xbe749157, 0x0a7fe6f1,
    0x97650ec0, 0x236e7966, 0xad50dea3, 0x195ba905, 0x84414134,
    0x304a3692},
   {0x00000000, 0x9e00aacc, 0x7d072542, 0xe3078f8e, 0xfa0e4a84,
    0x640ee048, 0x87096fc6, 0x1909c50a, 0xb51be5d3, 0x2b1b4f1f,
    0xc81cc091, 0x561c6a5d, 0x4f15af57, 0xd115059b, 0x32128a15,
    0xac1220d9, 0x2b31bb7c, 0xb53111b0, 0x56369e3e, 0xc83634f2,
    0xd13ff1f8, 0x4f3f5b34, 0xac38d4ba, 0x32387e76, 0x9e2a5eaf,
    0x002af463, 0xe32d7bed, 0x7d2dd121, 0x6424142b, 0xfa24bee7,
    0x19233169, 0x87239ba5, 0x566276f9, 0xc862dc35, 0x2b6553bb,
    0xb565f977, 0xac6c3c7d, 0x326c96b1, 0xd16b193f, 0x4f6bb3f3,
    0xe379932a, 0x7d7939e6, 0x9e7eb668, 0x007e1ca4, 0x1977d9ae,
    0x87777362, 0x6470fcec, 0xfa705620, 0x7d53cd85, 0xe3536749,
    0x0054e8c7, 0x9e54420b, 0x875d8701, 0x195d2dcd, 0xfa5aa243,
    0x645a088f, 0xc8482856, 0x5648829a, 0xb54f0d14, 0x2b4fa7d8,
    0x324662d2, 0xac46c81e, 0x4f414790, 0xd141ed5c, 0xedc29d29,
    0x73c237e5, 0x90c5b86b, 0x0ec512a7, 0x17ccd7ad, 0x89cc7d61,
    0x6acbf2ef, 0xf4cb5823, 0x58d978fa, 0xc6d9d236, 0x25de5db8,
    0xbbdef774, 0xa2d7327e, 0x3cd798b2, 0xdfd0173c, 0x41d0bdf0,
    0xc6f32655, 0x58f38c99, 0xbbf40317, 0x25f4a9db, 0x3cfd6cd1,
    0xa2fdc61d, 0x41fa4993, 0xdffae35f, 0x73e8c386, 0xede8694a,
    0x0eefe6c4, 0x90ef4c08, 0x89e68902, 0x17e623ce, 0xf4e1ac40,
    0x6ae1068c, 0xbba0ebd0, 0x25a0411c, 0xc6a7ce92, 0x58a7645e,
    0x41aea154, 0xdfae0b98, 0x3ca98416, 0xa2a92eda, 0x0ebb0e03,
    0x90bba4cf, 0x73bc2b41, 0xedbc818d, 0xf4b54487, 0x6ab5ee4b,
    0x89b261c5, 0x17b2cb09, 0x909150ac, 0x0e91fa60, 0xed9675ee,
    0x7396df22, 0x6a9f1a28, 0xf49fb0e4, 0x17983f6a, 0x899895a6,
    0x258ab57f, 0xbb8a1fb3, 0x588d903d, 0xc68d3af1, 0xdf84fffb,
    0x41845537, 0xa283dab9, 0x3c837075, 0xda853b53, 0x4485919f,
    0xa7821e11, 0x3982b4dd, 0x208b71d7, 0xbe8bdb1b, 0x5d8c5495,
    0xc38cfe59, 0x6f9ede80, 0xf19e744c, 0x1299fbc2, 0x8c99510e,
    0x95909404, 0x0b903ec8, 0xe897b146, 0x76971b8a, 0xf1b4802f,
    0x6fb42ae3, 0x8cb3a56d, 0x12b30fa1, 0x0bbacaab, 0x95ba6067,
    0x76bdefe9, 0xe8bd4525, 0x44af65fc, 0xdaafcf30, 0x39a840be,
    0xa7a8ea72, 0xbea12f78, 0x20a185b4, 0xc3a60a3a, 0x5da6a0f6,
    0x8ce74daa, 0x12e7e766, 0xf1e068e8, 0x6fe0c224, 0x76e9072e,
    0xe8e9ade2, 0x0bee226c, 0x95ee88a0, 0x39fca879, 0xa7fc02b5,
    0x44fb8d3b, 0xdafb27f7, 0xc3f2e2fd, 0x5df24831, 0xbef5c7bf,
    0x20f56d73, 0xa7d6f6d6, 0x39d65c1a, 0xdad1d394, 0x44d17958,
    0x5dd8bc52, 0xc3d8169e, 0x20df9910, 0xbedf33dc, 0x12cd1305,
    0x8ccdb9c9, 0x6fca3647, 0xf1ca9c8b, 0xe8c35981, 0x76c3f34d,
    0x95c47cc3, 0x0bc4d60f, 0x3747a67a, 0xa9470cb6, 0x4a408338,
    0xd44029f4, 0xcd49ecfe, 0x53494632, 0xb04ec9bc, 0x2e4e6370,
    0x825c43a9, 0x1c5ce965, 0xff5b66eb, 0x615bcc27, 0x7852092d,
    0xe652a3e1, 0x05552c6f, 0x9b5586a3, 0x1c761d06, 0x8276b7ca,
    0x61713844, 0xff719288, 0xe6785782, 0x7878fd4e, 0x9b7f72c0,
    0x057fd80c, 0xa96df8d5, 0x376d5219, 0xd46add97, 0x4a6a775b,
    0x5363b251, 0xcd63189d, 0x2e649713, 0xb0643ddf, 0x6125d083,
    0xff257a4f, 0x1c22f5c1, 0x82225f0d, 0x9b2b9a07, 0x052b30cb,
    0xe62cbf45, 0x782c1589, 0xd43e3550, 0x4a3e9f9c, 0xa9391012,
    0x3739bade, 0x2e307fd4, 0xb030d518, 0x53375a96, 0xcd37f05a,
    0x4a146bff, 0xd414c133, 0x37134ebd, 0xa913e471, 0xb01a217b,
    0x2e1a8bb7, 0xcd1d0439, 0x531daef5, 0xff0f8e2c, 0x610f24e0,
    0x8208ab6e, 0x1c0801a2, 0x0501c4a8, 0x9b016e64, 0x7806e1ea,
    0xe6064b26}};

#endif

#endif

#if N == 3

#if W == 8

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0x81256527, 0xd93bcc0f, 0x581ea928, 0x69069e5f,
    0xe823fb78, 0xb03d5250, 0x31183777, 0xd20d3cbe, 0x53285999,
    0x0b36f0b1, 0x8a139596, 0xbb0ba2e1, 0x3a2ec7c6, 0x62306eee,
    0xe3150bc9, 0x7f6b7f3d, 0xfe4e1a1a, 0xa650b332, 0x2775d615,
    0x166de162, 0x97488445, 0xcf562d6d, 0x4e73484a, 0xad664383,
    0x2c4326a4, 0x745d8f8c, 0xf578eaab, 0xc460dddc, 0x4545b8fb,
    0x1d5b11d3, 0x9c7e74f4, 0xfed6fe7a, 0x7ff39b5d, 0x27ed3275,
    0xa6c85752, 0x97d06025, 0x16f50502, 0x4eebac2a, 0xcfcec90d,
    0x2cdbc2c4, 0xadfea7e3, 0xf5e00ecb, 0x74c56bec, 0x45dd5c9b,
    0xc4f839bc, 0x9ce69094, 0x1dc3f5b3, 0x81bd8147, 0x0098e460,
    0x58864d48, 0xd9a3286f, 0xe8bb1f18, 0x699e7a3f, 0x3180d317,
    0xb0a5b630, 0x53b0bdf9, 0xd295d8de, 0x8a8b71f6, 0x0bae14d1,
    0x3ab623a6, 0xbb934681, 0xe38defa9, 0x62a88a8e, 0x26dcfab5,
    0xa7f99f92, 0xffe736ba, 0x7ec2539d, 0x4fda64ea, 0xceff01cd,
    0x96e1a8e5, 0x17c4cdc2, 0xf4d1c60b, 0x75f4a32c, 0x2dea0a04,
    0xaccf6f23, 0x9dd75854, 0x1cf23d73, 0x44ec945b, 0xc5c9f17c,
    0x59b78588, 0xd892e0af, 0x808c4987, 0x01a92ca0, 0x30b11bd7,
    0xb1947ef0, 0xe98ad7d8, 0x68afb2ff, 0x8bbab936, 0x0a9fdc11,
    0x52817539, 0xd3a4101e, 0xe2bc2769, 0x6399424e, 0x3b87eb66,
    0xbaa28e41, 0xd80a04cf, 0x592f61e8, 0x0131c8c0, 0x8014ade7,
    0xb10c9a90, 0x3029ffb7, 0x6837569f, 0xe91233b8, 0x0a073871,
    0x8b225d56, 0xd33cf47e, 0x52199159, 0x6301a62e, 0xe224c309,
    0xba3a6a21, 0x3b1f0f06, 0xa7617bf2, 0x26441ed5, 0x7e5ab7fd,
    0xff7fd2da, 0xce67e5ad, 0x4f42808a, 0x175c29a2, 0x96794c85,
    0x756c474c, 0xf449226b, 0xac578b43, 0x2d72ee64, 0x1c6ad913,
    0x9d4fbc34, 0xc551151c, 0x4474703b, 0x4db9f56a, 0xcc9c904d,
    0x94823965, 0x15a75c42, 0x24bf6b35, 0xa59a0e12, 0xfd84a73a,
    0x7ca1c21d, 0x9fb4c9d4, 0x1e91acf3, 0x468f05db, 0xc7aa60fc,
    0xf6b2578b, 0x779732ac, 0x2f899b84, 0xaeacfea3, 0x32d28a57,
    0xb3f7ef70, 0xebe94658, 0x6acc237f, 0x5bd41408, 0xdaf1712f,
    0x82efd807, 0x03cabd20, 0xe0dfb6e9, 0x61fad3ce, 0x39e47ae6,
    0xb8c11fc1, 0x89d928b6, 0x08fc4d91, 0x50e2e4b9, 0xd1c7819e,
    0xb36f0b10, 0x324a6e37, 0x6a54c71f, 0xeb71a238, 0xda69954f,
    0x5b4cf068, 0x03525940, 0x82773c67, 0x616237ae, 0xe0475289,
    0xb859fba1, 0x397c9e86, 0x0864a9f1, 0x8941ccd6, 0xd15f65fe,
    0x507a00d9, 0xcc04742d, 0x4d21110a, 0x153fb822, 0x941add05,
    0xa502ea72, 0x24278f55, 0x7c39267d, 0xfd1c435a, 0x1e094893,
    0x9f2c2db4, 0xc732849c, 0x4617e1bb, 0x770fd6cc, 0xf62ab3eb,
    0xae341ac3, 0x2f117fe4, 0x6b650fdf, 0xea406af8, 0xb25ec3d0,
    0x337ba6f7, 0x02639180, 0x8346f4a7, 0xdb585d8f, 0x5a7d38a8,
    0xb9683361, 0x384d5646, 0x6053ff6e, 0xe1769a49, 0xd06ead3e,
    0x514bc819, 0x09556131, 0x88700416, 0x140e70e2, 0x952b15c5,
    0xcd35bced, 0x4c10d9ca, 0x7d08eebd, 0xfc2d8b9a, 0xa43322b2,
    0x25164795, 0xc6034c5c, 0x4726297b, 0x1f388053, 0x9e1de574,
    0xaf05d203, 0x2e20b724, 0x763e1e0c, 0xf71b7b2b, 0x95b3f1a5,
    0x14969482, 0x4c883daa, 0xcdad588d, 0xfcb56ffa, 0x7d900add,
    0x258ea3f5, 0xa4abc6d2, 0x47becd1b, 0xc69ba83c, 0x9e850114,
    0x1fa06433, 0x2eb85344, 0xaf9d3663, 0xf7839f4b, 0x76a6fa6c,
    0xead88e98, 0x6bfdebbf, 0x33e34297, 0xb2c627b0, 0x83de10c7,
    0x02fb75e0, 0x5ae5dcc8, 0xdbc0b9ef, 0x38d5b226, 0xb9f0d701,
    0xe1ee7e29, 0x60cb1b0e, 0x51d32c79, 0xd0f6495e, 0x88e8e076,
    0x09cd8551},
   {0x00000000, 0x9b73ead4, 0xed96d3e9, 0x76e5393d, 0x005ca193,
    0x9b2f4b47, 0xedca727a, 0x76b998ae, 0x00b94326, 0x9bcaa9f2,
    0xed2f90cf, 0x765c7a1b, 0x00e5e2b5, 0x9b960861, 0xed73315c,
    0x7600db88, 0x0172864c, 0x9a016c98, 0xece455a5, 0x7797bf71,
    0x012e27df, 0x9a5dcd0b, 0xecb8f436, 0x77cb1ee2, 0x01cbc56a,
    0x9ab82fbe, 0xec5d1683, 0x772efc57, 0x019764f9, 0x9ae48e2d,
    0xec01b710, 0x77725dc4, 0x02e50c98, 0x9996e64c, 0xef73df71,
    0x740035a5, 0x02b9ad0b, 0x99ca47df, 0xef2f7ee2, 0x745c9436,
    0x025c4fbe, 0x992fa56a, 0xefca9c57, 0x74b97683, 0x0200ee2d,
    0x997304f9, 0xef963dc4, 0x74e5d710, 0x03978ad4, 0x98e46000,
    0xee01593d, 0x7572b3e9, 0x03cb2b47, 0x98b8c193, 0xee5df8ae,
    0x752e127a, 0x032ec9f2, 0x985d2326, 0xeeb81a1b, 0x75cbf0cf,
    0x03726861, 0x980182b5, 0xeee4bb88, 0x7597515c, 0x05ca1930,
    0x9eb9f3e4, 0xe85ccad9, 0x732f200d, 0x0596b8a3, 0x9ee55277,
    0xe8006b4a, 0x7373819e, 0x05735a16, 0x9e00b0c2, 0xe8e589ff,
    0x7396632b, 0x052ffb85, 0x9e5c1151, 0xe8b9286c, 0x73cac2b8,
    0x04b89f7c, 0x9fcb75a8, 0xe92e4c95, 0x725da641, 0x04e43eef,
    0x9f97d43b, 0xe972ed06, 0x720107d2, 0x0401dc5a, 0x9f72368e,
    0xe9970fb3, 0x72e4e567, 0x045d7dc9, 0x9f2e971d, 0xe9cbae20,
    0x72b844f4, 0x072f15a8, 0x9c5cff7c, 0xeab9c641, 0x71ca2c95,
    0x0773b43b, 0x9c005eef, 0xeae567d2, 0x71968d06, 0x0796568e,
    0x9ce5bc5a, 0xea008567, 0x71736fb3, 0x07caf71d, 0x9cb91dc9,
    0xea5c24f4, 0x712fce20, 0x065d93e4, 0x9d2e7930, 0xebcb400d,
    0x70b8aad9, 0x06013277, 0x9d72d8a3, 0xeb97e19e, 0x70e40b4a,
    0x06e4d0c2, 0x9d973a16, 0xeb72032b, 0x7001e9ff, 0x06b87151,
    0x9dcb9b85, 0xeb2ea2b8, 0x705d486c, 0x0b943260, 0x90e7d8b4,
    0xe602e189, 0x7d710b5d, 0x0bc893f3, 0x90bb7927, 0xe65e401a,
    0x7d2daace, 0x0b2d7146, 0x905e9b92, 0xe6bba2af, 0x7dc8487b,
    0x0b71d0d5, 0x90023a01, 0xe6e7033c, 0x7d94e9e8, 0x0ae6b42c,
    0x91955ef8, 0xe77067c5, 0x7c038d11, 0x0aba15bf, 0x91c9ff6b,
    0xe72cc656, 0x7c5f2c82, 0x0a5ff70a, 0x912c1dde, 0xe7c924e3,
    0x7cbace37, 0x0a035699, 0x9170bc4d, 0xe7958570, 0x7ce66fa4,
    0x09713ef8, 0x9202d42c, 0xe4e7ed11, 0x7f9407c5, 0x092d9f6b,
    0x925e75bf, 0xe4bb4c82, 0x7fc8a656, 0x09c87dde, 0x92bb970a,
    0xe45eae37, 0x7f2d44e3, 0x0994dc4d, 0x92e73699, 0xe4020fa4,
    0x7f71e570, 0x0803b8b4, 0x93705260, 0xe5956b5d, 0x7ee68189,
    0x085f1927, 0x932cf3f3, 0xe5c9cace, 0x7eba201a, 0x08bafb92,
    0x93c91146, 0xe52c287b, 0x7e5fc2af, 0x08e65a01, 0x9395b0d5,
    0xe57089e8, 0x7e03633c, 0x0e5e2b50, 0x952dc184, 0xe3c8f8b9,
    0x78bb126d, 0x0e028ac3, 0x95716017, 0xe394592a, 0x78e7b3fe,
    0x0ee76876, 0x959482a2, 0xe371bb9f, 0x7802514b, 0x0ebbc9e5,
    0x95c82331, 0xe32d1a0c, 0x785ef0d8, 0x0f2cad1c, 0x945f47c8,
    0xe2ba7ef5, 0x79c99421, 0x0f700c8f, 0x9403e65b, 0xe2e6df66,
    0x799535b2, 0x0f95ee3a, 0x94e604ee, 0xe2033dd3, 0x7970d707,
    0x0fc94fa9, 0x94baa57d, 0xe25f9c40, 0x792c7694, 0x0cbb27c8,
    0x97c8cd1c, 0xe12df421, 0x7a5e1ef5, 0x0ce7865b, 0x97946c8f,
    0xe17155b2, 0x7a02bf66, 0x0c0264ee, 0x97718e3a, 0xe194b707,
    0x7ae75dd3, 0x0c5ec57d, 0x972d2fa9, 0xe1c81694, 0x7abbfc40,
    0x0dc9a184, 0x96ba4b50, 0xe05f726d, 0x7b2c98b9, 0x0d950017,
    0x96e6eac3, 0xe003d3fe, 0x7b70392a, 0x0d70e2a2, 0x96030876,
    0xe0e6314b, 0x7b95db9f, 0x0d2c4331, 0x965fa9e5, 0xe0ba90d8,
    0x7bc97a0c},
   {0x00000000, 0x172864c0, 0x2e50c980, 0x3978ad40, 0x5ca19300,
    0x4b89f7c0, 0x72f15a80, 0x65d93e40, 0xb9432600, 0xae6b42c0,
    0x9713ef80, 0x803b8b40, 0xe5e2b500, 0xf2cad1c0, 0xcbb27c80,
    0xdc9a1840, 0xa9f74a41, 0xbedf2e81, 0x87a783c1, 0x908fe701,
    0xf556d941, 0xe27ebd81, 0xdb0610c1, 0xcc2e7401, 0x10b46c41,
    0x079c0881, 0x3ee4a5c1, 0x29ccc101, 0x4c15ff41, 0x5b3d9b81,
    0x624536c1, 0x756d5201, 0x889f92c3, 0x9fb7f603, 0xa6cf5b43,
    0xb1e73f83, 0xd43e01c3, 0xc3166503, 0xfa6ec843, 0xed46ac83,
    0x31dcb4c3, 0x26f4d003, 0x1f8c7d43, 0x08a41983, 0x6d7d27c3,
    0x7a554303, 0x432dee43, 0x54058a83, 0x2168d882, 0x3640bc42,
    0x0f381102, 0x181075c2, 0x7dc94b82, 0x6ae12f42, 0x53998202,
    0x44b1e6c2, 0x982bfe82, 0x8f039a42, 0xb67b3702, 0xa15353c2,
    0xc48a6d82, 0xd3a20942, 0xeadaa402, 0xfdf2c0c2, 0xca4e23c7,
    0xdd664707, 0xe41eea47, 0xf3368e87, 0x96efb0c7, 0x81c7d407,
    0xb8bf7947, 0xaf971d87, 0x730d05c7, 0x64256107, 0x5d5dcc47,
    0x4a75a887, 0x2fac96c7, 0x3884f207, 0x01fc5f47, 0x16d43b87,
    0x63b96986, 0x74910d46, 0x4de9a006, 0x5ac1c4c6, 0x3f18fa86,
    0x28309e46, 0x11483306, 0x066057c6, 0xdafa4f86, 0xcdd22b46,
    0xf4aa8606, 0xe382e2c6, 0x865bdc86, 0x9173b846, 0xa80b1506,
    0xbf2371c6, 0x42d1b104, 0x55f9d5c4, 0x6c817884, 0x7ba91c44,
    0x1e702204, 0x095846c4, 0x3020eb84, 0x27088f44, 0xfb929704,
    0xecbaf3c4, 0xd5c25e84, 0xc2ea3a44, 0xa7330404, 0xb01b60c4,
    0x8963cd84, 0x9e4ba944, 0xeb26fb45, 0xfc0e9f85, 0xc57632c5,
    0xd25e5605, 0xb7876845, 0xa0af0c85, 0x99d7a1c5, 0x8effc505,
    0x5265dd45, 0x454db985, 0x7c3514c5, 0x6b1d7005, 0x0ec44e45,
    0x19ec2a85, 0x209487c5, 0x37bce305, 0x4fed41cf, 0x58c5250f,
    0x61bd884f, 0x7695ec8f, 0x134cd2cf, 0x0464b60f, 0x3d1c1b4f,
    0x2a347f8f, 0xf6ae67cf, 0xe186030f, 0xd8feae4f, 0xcfd6ca8f,
    0xaa0ff4cf, 0xbd27900f, 0x845f3d4f, 0x9377598f, 0xe61a0b8e,
    0xf1326f4e, 0xc84ac20e, 0xdf62a6ce, 0xbabb988e, 0xad93fc4e,
    0x94eb510e, 0x83c335ce, 0x5f592d8e, 0x4871494e, 0x7109e40e,
    0x662180ce, 0x03f8be8e, 0x14d0da4e, 0x2da8770e, 0x3a8013ce,
    0xc772d30c, 0xd05ab7cc, 0xe9221a8c, 0xfe0a7e4c, 0x9bd3400c,
    0x8cfb24cc, 0xb583898c, 0xa2abed4c, 0x7e31f50c, 0x691991cc,
    0x50613c8c, 0x4749584c, 0x2290660c, 0x35b802cc, 0x0cc0af8c,
    0x1be8cb4c, 0x6e85994d, 0x79adfd8d, 0x40d550cd, 0x57fd340d,
    0x32240a4d, 0x250c6e8d, 0x1c74c3cd, 0x0b5ca70d, 0xd7c6bf4d,
    0xc0eedb8d, 0xf99676cd, 0xeebe120d, 0x8b672c4d, 0x9c4f488d,
    0xa537e5cd, 0xb21f810d, 0x85a36208, 0x928b06c8, 0xabf3ab88,
    0xbcdbcf48, 0xd902f108, 0xce2a95c8, 0xf7523888, 0xe07a5c48,
    0x3ce04408, 0x2bc820c8, 0x12b08d88, 0x0598e948, 0x6041d708,
    0x7769b3c8, 0x4e111e88, 0x59397a48, 0x2c542849, 0x3b7c4c89,
    0x0204e1c9, 0x152c8509, 0x70f5bb49, 0x67dddf89, 0x5ea572c9,
    0x498d1609, 0x95170e49, 0x823f6a89, 0xbb47c7c9, 0xac6fa309,
    0xc9b69d49, 0xde9ef989, 0xe7e654c9, 0xf0ce3009, 0x0d3cf0cb,
    0x1a14940b, 0x236c394b, 0x34445d8b, 0x519d63cb, 0x46b5070b,
    0x7fcdaa4b, 0x68e5ce8b, 0xb47fd6cb, 0xa357b20b, 0x9a2f1f4b,
    0x8d077b8b, 0xe8de45cb, 0xfff6210b, 0xc68e8c4b, 0xd1a6e88b,
    0xa4cbba8a, 0xb3e3de4a, 0x8a9b730a, 0x9db317ca, 0xf86a298a,
    0xef424d4a, 0xd63ae00a, 0xc11284ca, 0x1d889c8a, 0x0aa0f84a,
    0x33d8550a, 0x24f031ca, 0x41290f8a, 0x56016b4a, 0x6f79c60a,
    0x7851a2ca},
   {0x00000000, 0x9fda839e, 0xe4c4017d, 0x7b1e82e3, 0x12f904bb,
    0x8d238725, 0xf63d05c6, 0x69e78658, 0x25f20976, 0xba288ae8,
    0xc136080b, 0x5eec8b95, 0x370b0dcd, 0xa8d18e53, 0xd3cf0cb0,
    0x4c158f2e, 0x4be412ec, 0xd43e9172, 0xaf201391, 0x30fa900f,
    0x591d1657, 0xc6c795c9, 0xbdd9172a, 0x220394b4, 0x6e161b9a,
    0xf1cc9804, 0x8ad21ae7, 0x15089979, 0x7cef1f21, 0xe3359cbf,
    0x982b1e5c, 0x07f19dc2, 0x97c825d8, 0x0812a646, 0x730c24a5,
    0xecd6a73b, 0x85312163, 0x1aeba2fd, 0x61f5201e, 0xfe2fa380,
    0xb23a2cae, 0x2de0af30, 0x56fe2dd3, 0xc924ae4d, 0xa0c32815,
    0x3f19ab8b, 0x44072968, 0xdbddaaf6, 0xdc2c3734, 0x43f6b4aa,
    0x38e83649, 0xa732b5d7, 0xced5338f, 0x510fb011, 0x2a1132f2,
    0xb5cbb16c, 0xf9de3e42, 0x6604bddc, 0x1d1a3f3f, 0x82c0bca1,
    0xeb273af9, 0x74fdb967, 0x0fe33b84, 0x9039b81a, 0xf4e14df1,
    0x6b3bce6f, 0x10254c8c, 0x8fffcf12, 0xe618494a, 0x79c2cad4,
    0x02dc4837, 0x9d06cba9, 0xd1134487, 0x4ec9c719, 0x35d745fa,
    0xaa0dc664, 0xc3ea403c, 0x5c30c3a2, 0x272e4141, 0xb8f4c2df,
    0xbf055f1d, 0x20dfdc83, 0x5bc15e60, 0xc41bddfe, 0xadfc5ba6,
    0x3226d838, 0x49385adb, 0xd6e2d945, 0x9af7566b, 0x052dd5f5,
    0x7e335716, 0xe1e9d488, 0x880e52d0, 0x17d4d14e, 0x6cca53ad,
    0xf310d033, 0x63296829, 0xfcf3ebb7, 0x87ed6954, 0x1837eaca,
    0x71d06c92, 0xee0aef0c, 0x95146def, 0x0aceee71, 0x46db615f,
    0xd901e2c1, 0xa21f6022, 0x3dc5e3bc, 0x542265e4, 0xcbf8e67a,
    0xb0e66499, 0x2f3ce707, 0x28cd7ac5, 0xb717f95b, 0xcc097bb8,
    0x53d3f826, 0x3a347e7e, 0xa5eefde0, 0xdef07f03, 0x412afc9d,
    0x0d3f73b3, 0x92e5f02d, 0xe9fb72ce, 0x7621f150, 0x1fc67708,
    0x801cf496, 0xfb027675, 0x64d8f5eb, 0x32b39da3, 0xad691e3d,
    0xd6779cde, 0x49ad1f40, 0x204a9918, 0xbf901a86, 0xc48e9865,
    0x5b541bfb, 0x174194d5, 0x889b174b, 0xf38595a8, 0x6c5f1636,
    0x05b8906e, 0x9a6213f0, 0xe17c9113, 0x7ea6128d, 0x79578f4f,
    0xe68d0cd1, 0x9d938e32, 0x02490dac, 0x6bae8bf4, 0xf474086a,
    0x8f6a8a89, 0x10b00917, 0x5ca58639, 0xc37f05a7, 0xb8618744,
    0x27bb04da, 0x4e5c8282, 0xd186011c, 0xaa9883ff, 0x35420061,
    0xa57bb87b, 0x3aa13be5, 0x41bfb906, 0xde653a98, 0xb782bcc0,
    0x28583f5e, 0x5346bdbd, 0xcc9c3e23, 0x8089b10d, 0x1f533293,
    0x644db070, 0xfb9733ee, 0x9270b5b6, 0x0daa3628, 0x76b4b4cb,
    0xe96e3755, 0xee9faa97, 0x71452909, 0x0a5babea, 0x95812874,
    0xfc66ae2c, 0x63bc2db2, 0x18a2af51, 0x87782ccf, 0xcb6da3e1,
    0x54b7207f, 0x2fa9a29c, 0xb0732102, 0xd994a75a, 0x464e24c4,
    0x3d50a627, 0xa28a25b9, 0xc652d052, 0x598853cc, 0x2296d12f,
    0xbd4c52b1, 0xd4abd4e9, 0x4b715777, 0x306fd594, 0xafb5560a,
    0xe3a0d924, 0x7c7a5aba, 0x0764d859, 0x98be5bc7, 0xf159dd9f,
    0x6e835e01, 0x159ddce2, 0x8a475f7c, 0x8db6c2be, 0x126c4120,
    0x6972c3c3, 0xf6a8405d, 0x9f4fc605, 0x0095459b, 0x7b8bc778,
    0xe45144e6, 0xa844cbc8, 0x379e4856, 0x4c80cab5, 0xd35a492b,
    0xbabdcf73, 0x25674ced, 0x5e79ce0e, 0xc1a34d90, 0x519af58a,
    0xce407614, 0xb55ef4f7, 0x2a847769, 0x4363f131, 0xdcb972af,
    0xa7a7f04c, 0x387d73d2, 0x7468fcfc, 0xebb27f62, 0x90acfd81,
    0x0f767e1f, 0x6691f847, 0xf94b7bd9, 0x8255f93a, 0x1d8f7aa4,
    0x1a7ee766, 0x85a464f8, 0xfebae61b, 0x61606585, 0x0887e3dd,
    0x975d6043, 0xec43e2a0, 0x7399613e, 0x3f8cee10, 0xa0566d8e,
    0xdb48ef6d, 0x44926cf3, 0x2d75eaab, 0xb2af6935, 0xc9b1ebd6,
    0x566b6848},
   {0x00000000, 0x65673b46, 0xcace768c, 0xafa94dca, 0x4eedeb59,
    0x2b8ad01f, 0x84239dd5, 0xe144a693, 0x9ddbd6b2, 0xf8bcedf4,
    0x5715a03e, 0x32729b78, 0xd3363deb, 0xb65106ad, 0x19f84b67,
    0x7c9f7021, 0xe0c6ab25, 0x85a19063, 0x2a08dda9, 0x4f6fe6ef,
    0xae2b407c, 0xcb4c7b3a, 0x64e536f0, 0x01820db6, 0x7d1d7d97,
    0x187a46d1, 0xb7d30b1b, 0xd2b4305d, 0x33f096ce, 0x5697ad88,
    0xf93ee042, 0x9c59db04, 0x1afc500b, 0x7f9b6b4d, 0xd0322687,
    0xb5551dc1, 0x5411bb52, 0x31768014, 0x9edfcdde, 0xfbb8f698,
    0x872786b9, 0xe240bdff, 0x4de9f035, 0x288ecb73, 0xc9ca6de0,
    0xacad56a6, 0x03041b6c, 0x6663202a, 0xfa3afb2e, 0x9f5dc068,
    0x30f48da2, 0x5593b6e4, 0xb4d71077, 0xd1b02b31, 0x7e1966fb,
    0x1b7e5dbd, 0x67e12d9c, 0x028616da, 0xad2f5b10, 0xc8486056,
    0x290cc6c5, 0x4c6bfd83, 0xe3c2b049, 0x86a58b0f, 0x35f8a016,
    0x509f9b50, 0xff36d69a, 0x9a51eddc, 0x7b154b4f, 0x1e727009,
    0xb1db3dc3, 0xd4bc0685, 0xa82376a4, 0xcd444de2, 0x62ed0028,
    0x078a3b6e, 0xe6ce9dfd, 0x83a9a6bb, 0x2c00eb71, 0x4967d037,
    0xd53e0b33, 0xb0593075, 0x1ff07dbf, 0x7a9746f9, 0x9bd3e06a,
    0xfeb4db2c, 0x511d96e6, 0x347aada0, 0x48e5dd81, 0x2d82e6c7,
    0x822bab0d, 0xe74c904b, 0x060836d8, 0x636f0d9e, 0xccc64054,
    0xa9a17b12, 0x2f04f01d, 0x4a63cb5b, 0xe5ca8691, 0x80adbdd7,
    0x61e91b44, 0x048e2002, 0xab276dc8, 0xce40568e, 0xb2df26af,
    0xd7b81de9, 0x78115023, 0x1d766b65, 0xfc32cdf6, 0x9955f6b0,
    0x36fcbb7a, 0x539b803c, 0xcfc25b38, 0xaaa5607e, 0x050c2db4,
    0x606b16f2, 0x812fb061, 0xe4488b27, 0x4be1c6ed, 0x2e86fdab,
    0x52198d8a, 0x377eb6cc, 0x98d7fb06, 0xfdb0c040, 0x1cf466d3,
    0x79935d95, 0xd63a105f, 0xb35d2b19, 0x6bf1402c, 0x0e967b6a,
    0xa13f36a0, 0xc4580de6, 0x251cab75, 0x407b9033, 0xefd2ddf9,
    0x8ab5e6bf, 0xf62a969e, 0x934dadd8, 0x3ce4e012, 0x5983db54,
    0xb8c77dc7, 0xdda04681, 0x72090b4b, 0x176e300d, 0x8b37eb09,
    0xee50d04f, 0x41f99d85, 0x249ea6c3, 0xc5da0050, 0xa0bd3b16,
    0x0f1476dc, 0x6a734d9a, 0x16ec3dbb, 0x738b06fd, 0xdc224b37,
    0xb9457071, 0x5801d6e2, 0x3d66eda4, 0x92cfa06e, 0xf7a89b28,
    0x710d1027, 0x146a2b61, 0xbbc366ab, 0xdea45ded, 0x3fe0fb7e,
    0x5a87c038, 0xf52e8df2, 0x9049b6b4, 0xecd6c695, 0x89b1fdd3,
    0x2618b019, 0x437f8b5f, 0xa23b2dcc, 0xc75c168a, 0x68f55b40,
    0x0d926006, 0x91cbbb02, 0xf4ac8044, 0x5b05cd8e, 0x3e62f6c8,
    0xdf26505b, 0xba416b1d, 0x15e826d7, 0x708f1d91, 0x0c106db0,
    0x697756f6, 0xc6de1b3c, 0xa3b9207a, 0x42fd86e9, 0x279abdaf,
    0x8833f065, 0xed54cb23, 0x5e09e03a, 0x3b6edb7c, 0x94c796b6,
    0xf1a0adf0, 0x10e40b63, 0x75833025, 0xda2a7def, 0xbf4d46a9,
    0xc3d23688, 0xa6b50dce, 0x091c4004, 0x6c7b7b42, 0x8d3fddd1,
    0xe858e697, 0x47f1ab5d, 0x2296901b, 0xbecf4b1f, 0xdba87059,
    0x74013d93, 0x116606d5, 0xf022a046, 0x95459b00, 0x3aecd6ca,
    0x5f8bed8c, 0x23149dad, 0x4673a6eb, 0xe9daeb21, 0x8cbdd067,
    0x6df976f4, 0x089e4db2, 0xa7370078, 0xc2503b3e, 0x44f5b031,
    0x21928b77, 0x8e3bc6bd, 0xeb5cfdfb, 0x0a185b68, 0x6f7f602e,
    0xc0d62de4, 0xa5b116a2, 0xd92e6683, 0xbc495dc5, 0x13e0100f,
    0x76872b49, 0x97c38dda, 0xf2a4b69c, 0x5d0dfb56, 0x386ac010,
    0xa4331b14, 0xc1542052, 0x6efd6d98, 0x0b9a56de, 0xeadef04d,
    0x8fb9cb0b, 0x201086c1, 0x4577bd87, 0x39e8cda6, 0x5c8ff6e0,
    0xf326bb2a, 0x9641806c, 0x770526ff, 0x12621db9, 0xbdcb5073,
    0xd8ac6b35},
   {0x00000000, 0xd7e28058, 0x74b406f1, 0xa35686a9, 0xe9680de2,
    0x3e8a8dba, 0x9ddc0b13, 0x4a3e8b4b, 0x09a11d85, 0xde439ddd,
    0x7d151b74, 0xaaf79b2c, 0xe0c91067, 0x372b903f, 0x947d1696,
    0x439f96ce, 0x13423b0a, 0xc4a0bb52, 0x67f63dfb, 0xb014bda3,
    0xfa2a36e8, 0x2dc8b6b0, 0x8e9e3019, 0x597cb041, 0x1ae3268f,
    0xcd01a6d7, 0x6e57207e, 0xb9b5a026, 0xf38b2b6d, 0x2469ab35,
    0x873f2d9c, 0x50ddadc4, 0x26847614, 0xf166f64c, 0x523070e5,
    0x85d2f0bd, 0xcfec7bf6, 0x180efbae, 0xbb587d07, 0x6cbafd5f,
    0x2f256b91, 0xf8c7ebc9, 0x5b916d60, 0x8c73ed38, 0xc64d6673,
    0x11afe62b, 0xb2f96082, 0x651be0da, 0x35c64d1e, 0xe224cd46,
    0x41724bef, 0x9690cbb7, 0xdcae40fc, 0x0b4cc0a4, 0xa81a460d,
    0x7ff8c655, 0x3c67509b, 0xeb85d0c3, 0x48d3566a, 0x9f31d632,
    0xd50f5d79, 0x02eddd21, 0xa1bb5b88, 0x7659dbd0, 0x4d08ec28,
    0x9aea6c70, 0x39bcead9, 0xee5e6a81, 0xa460e1ca, 0x73826192,
    0xd0d4e73b, 0x07366763, 0x44a9f1ad, 0x934b71f5, 0x301df75c,
    0xe7ff7704, 0xadc1fc4f, 0x7a237c17, 0xd975fabe, 0x0e977ae6,
    0x5e4ad722, 0x89a8577a, 0x2afed1d3, 0xfd1c518b, 0xb722dac0,
    0x60c05a98, 0xc396dc31, 0x14745c69, 0x57ebcaa7, 0x80094aff,
    0x235fcc56, 0xf4bd4c0e, 0xbe83c745, 0x6961471d, 0xca37c1b4,
    0x1dd541ec, 0x6b8c9a3c, 0xbc6e1a64, 0x1f389ccd, 0xc8da1c95,
    0x82e497de, 0x55061786, 0xf650912f, 0x21b21177, 0x622d87b9,
    0xb5cf07e1, 0x16998148, 0xc17b0110, 0x8b458a5b, 0x5ca70a03,
    0xfff18caa, 0x28130cf2, 0x78cea136, 0xaf2c216e, 0x0c7aa7c7,
    0xdb98279f, 0x91a6acd4, 0x46442c8c, 0xe512aa25, 0x32f02a7d,
    0x716fbcb3, 0xa68d3ceb, 0x05dbba42, 0xd2393a1a, 0x9807b151,
    0x4fe53109, 0xecb3b7a0, 0x3b5137f8, 0x9a11d850, 0x4df35808,
    0xeea5dea1, 0x39475ef9, 0x7379d5b2, 0xa49b55ea, 0x07cdd343,
    0xd02f531b, 0x93b0c5d5, 0x4452458d, 0xe704c324, 0x30e6437c,
    0x7ad8c837, 0xad3a486f, 0x0e6ccec6, 0xd98e4e9e, 0x8953e35a,
    0x5eb16302, 0xfde7e5ab, 0x2a0565f3, 0x603beeb8, 0xb7d96ee0,
    0x148fe849, 0xc36d6811, 0x80f2fedf, 0x57107e87, 0xf446f82e,
    0x23a47876, 0x699af33d, 0xbe787365, 0x1d2ef5cc, 0xcacc7594,
    0xbc95ae44, 0x6b772e1c, 0xc821a8b5, 0x1fc328ed, 0x55fda3a6,
    0x821f23fe, 0x2149a557, 0xf6ab250f, 0xb534b3c1, 0x62d63399,
    0xc180b530, 0x16623568, 0x5c5cbe23, 0x8bbe3e7b, 0x28e8b8d2,
    0xff0a388a, 0xafd7954e, 0x78351516, 0xdb6393bf, 0x0c8113e7,
    0x46bf98ac, 0x915d18f4, 0x320b9e5d, 0xe5e91e05, 0xa67688cb,
    0x71940893, 0xd2c28e3a, 0x05200e62, 0x4f1e8529, 0x98fc0571,
    0x3baa83d8, 0xec480380, 0xd7193478, 0x00fbb420, 0xa3ad3289,
    0x744fb2d1, 0x3e71399a, 0xe993b9c2, 0x4ac53f6b, 0x9d27bf33,
    0xdeb829fd, 0x095aa9a5, 0xaa0c2f0c, 0x7deeaf54, 0x37d0241f,
    0xe032a447, 0x436422ee, 0x9486a2b6, 0xc45b0f72, 0x13b98f2a,
    0xb0ef0983, 0x670d89db, 0x2d330290, 0xfad182c8, 0x59870461,
    0x8e658439, 0xcdfa12f7, 0x1a1892af, 0xb94e1406, 0x6eac945e,
    0x24921f15, 0xf3709f4d, 0x502619e4, 0x87c499bc, 0xf19d426c,
    0x267fc234, 0x8529449d, 0x52cbc4c5, 0x18f54f8e, 0xcf17cfd6,
    0x6c41497f, 0xbba3c927, 0xf83c5fe9, 0x2fdedfb1, 0x8c885918,
    0x5b6ad940, 0x1154520b, 0xc6b6d253, 0x65e054fa, 0xb202d4a2,
    0xe2df7966, 0x353df93e, 0x966b7f97, 0x4189ffcf, 0x0bb77484,
    0xdc55f4dc, 0x7f037275, 0xa8e1f22d, 0xeb7e64e3, 0x3c9ce4bb,
    0x9fca6212, 0x4828e24a, 0x02166901, 0xd5f4e959, 0x76a26ff0,
    0xa140efa8},
   {0x00000000, 0xef52b6e1, 0x05d46b83, 0xea86dd62, 0x0ba8d706,
    0xe4fa61e7, 0x0e7cbc85, 0xe12e0a64, 0x1751ae0c, 0xf80318ed,
    0x1285c58f, 0xfdd7736e, 0x1cf9790a, 0xf3abcfeb, 0x192d1289,
    0xf67fa468, 0x2ea35c18, 0xc1f1eaf9, 0x2b77379b, 0xc425817a,
    0x250b8b1e, 0xca593dff, 0x20dfe09d, 0xcf8d567c, 0x39f2f214,
    0xd6a044f5, 0x3c269997, 0xd3742f76, 0x325a2512, 0xdd0893f3,
    0x378e4e91, 0xd8dcf870, 0x5d46b830, 0xb2140ed1, 0x5892d3b3,
    0xb7c06552, 0x56ee6f36, 0xb9bcd9d7, 0x533a04b5, 0xbc68b254,
    0x4a17163c, 0xa545a0dd, 0x4fc37dbf, 0xa091cb5e, 0x41bfc13a,
    0xaeed77db, 0x446baab9, 0xab391c58, 0x73e5e428, 0x9cb752c9,
    0x76318fab, 0x9963394a, 0x784d332e, 0x971f85cf, 0x7d9958ad,
    0x92cbee4c, 0x64b44a24, 0x8be6fcc5, 0x616021a7, 0x8e329746,
    0x6f1c9d22, 0x804e2bc3, 0x6ac8f6a1, 0x859a4040, 0xba8d7060,
    0x55dfc681, 0xbf591be3, 0x500bad02, 0xb125a766, 0x5e771187,
    0xb4f1cce5, 0x5ba37a04, 0xaddcde6c, 0x428e688d, 0xa808b5ef,
    0x475a030e, 0xa674096a, 0x4926bf8b, 0xa3a062e9, 0x4cf2d408,
    0x942e2c78, 0x7b7c9a99, 0x91fa47fb, 0x7ea8f11a, 0x9f86fb7e,
    0x70d44d9f, 0x9a5290fd, 0x7500261c, 0x837f8274, 0x6c2d3495,
    0x86abe9f7, 0x69f95f16, 0x88d75572, 0x6785e393, 0x8d033ef1,
    0x62518810, 0xe7cbc850, 0x08997eb1, 0xe21fa3d3, 0x0d4d1532,
    0xec631f56, 0x0331a9b7, 0xe9b774d5, 0x06e5c234, 0xf09a665c,
    0x1fc8d0bd, 0xf54e0ddf, 0x1a1cbb3e, 0xfb32b15a, 0x146007bb,
    0xfee6dad9, 0x11b46c38, 0xc9689448, 0x263a22a9, 0xccbcffcb,
    0x23ee492a, 0xc2c0434e, 0x2d92f5af, 0xc71428cd, 0x28469e2c,
    0xde393a44, 0x316b8ca5, 0xdbed51c7, 0x34bfe726, 0xd591ed42,
    0x3ac35ba3, 0xd04586c1, 0x3f173020, 0xae6be681, 0x41395060,
    0xabbf8d02, 0x44ed3be3, 0xa5c33187, 0x4a918766, 0xa0175a04,
    0x4f45ece5, 0xb93a488d, 0x5668fe6c, 0xbcee230e, 0x53bc95ef,
    0xb2929f8b, 0x5dc0296a, 0xb746f408, 0x581442e9, 0x80c8ba99,
    0x6f9a0c78, 0x851cd11a, 0x6a4e67fb, 0x8b606d9f, 0x6432db7e,
    0x8eb4061c, 0x61e6b0fd, 0x97991495, 0x78cba274, 0x924d7f16,
    0x7d1fc9f7, 0x9c31c393, 0x73637572, 0x99e5a810, 0x76b71ef1,
    0xf32d5eb1, 0x1c7fe850, 0xf6f93532, 0x19ab83d3, 0xf88589b7,
    0x17d73f56, 0xfd51e234, 0x120354d5, 0xe47cf0bd, 0x0b2e465c,
    0xe1a89b3e, 0x0efa2ddf, 0xefd427bb, 0x0086915a, 0xea004c38,
    0x0552fad9, 0xdd8e02a9, 0x32dcb448, 0xd85a692a, 0x3708dfcb,
    0xd626d5af, 0x3974634e, 0xd3f2be2c, 0x3ca008cd, 0xcadfaca5,
    0x258d1a44, 0xcf0bc726, 0x205971c7, 0xc1777ba3, 0x2e25cd42,
    0xc4a31020, 0x2bf1a6c1, 0x14e696e1, 0xfbb42000, 0x1132fd62,
    0xfe604b83, 0x1f4e41e7, 0xf01cf706, 0x1a9a2a64, 0xf5c89c85,
    0x03b738ed, 0xece58e0c, 0x0663536e, 0xe931e58f, 0x081fefeb,
    0xe74d590a, 0x0dcb8468, 0xe2993289, 0x3a45caf9, 0xd5177c18,
    0x3f91a17a, 0xd0c3179b, 0x31ed1dff, 0xdebfab1e, 0x3439767c,
    0xdb6bc09d, 0x2d1464f5, 0xc246d214, 0x28c00f76, 0xc792b997,
    0x26bcb3f3, 0xc9ee0512, 0x2368d870, 0xcc3a6e91, 0x49a02ed1,
    0xa6f29830, 0x4c744552, 0xa326f3b3, 0x4208f9d7, 0xad5a4f36,
    0x47dc9254, 0xa88e24b5, 0x5ef180dd, 0xb1a3363c, 0x5b25eb5e,
    0xb4775dbf, 0x555957db, 0xba0be13a, 0x508d3c58, 0xbfdf8ab9,
    0x670372c9, 0x8851c428, 0x62d7194a, 0x8d85afab, 0x6caba5cf,
    0x83f9132e, 0x697fce4c, 0x862d78ad, 0x7052dcc5, 0x9f006a24,
    0x7586b746, 0x9ad401a7, 0x7bfa0bc3, 0x94a8bd22, 0x7e2e6040,
    0x917cd6a1},
   {0x00000000, 0x87a6cb43, 0xd43c90c7, 0x539a5b84, 0x730827cf,
    0xf4aeec8c, 0xa734b708, 0x20927c4b, 0xe6104f9e, 0x61b684dd,
    0x322cdf59, 0xb58a141a, 0x95186851, 0x12bea312, 0x4124f896,
    0xc68233d5, 0x1751997d, 0x90f7523e, 0xc36d09ba, 0x44cbc2f9,
    0x6459beb2, 0xe3ff75f1, 0xb0652e75, 0x37c3e536, 0xf141d6e3,
    0x76e71da0, 0x257d4624, 0xa2db8d67, 0x8249f12c, 0x05ef3a6f,
    0x567561eb, 0xd1d3aaa8, 0x2ea332fa, 0xa905f9b9, 0xfa9fa23d,
    0x7d39697e, 0x5dab1535, 0xda0dde76, 0x899785f2, 0x0e314eb1,
    0xc8b37d64, 0x4f15b627, 0x1c8feda3, 0x9b2926e0, 0xbbbb5aab,
    0x3c1d91e8, 0x6f87ca6c, 0xe821012f, 0x39f2ab87, 0xbe5460c4,
    0xedce3b40, 0x6a68f003, 0x4afa8c48, 0xcd5c470b, 0x9ec61c8f,
    0x1960d7cc, 0xdfe2e419, 0x58442f5a, 0x0bde74de, 0x8c78bf9d,
    0xaceac3d6, 0x2b4c0895, 0x78d65311, 0xff709852, 0x5d4665f4,
    0xdae0aeb7, 0x897af533, 0x0edc3e70, 0x2e4e423b, 0xa9e88978,
    0xfa72d2fc, 0x7dd419bf, 0xbb562a6a, 0x3cf0e129, 0x6f6abaad,
    0xe8cc71ee, 0xc85e0da5, 0x4ff8c6e6, 0x1c629d62, 0x9bc45621,
    0x4a17fc89, 0xcdb137ca, 0x9e2b6c4e, 0x198da70d, 0x391fdb46,
    0xbeb91005, 0xed234b81, 0x6a8580c2, 0xac07b317, 0x2ba17854,
    0x783b23d0, 0xff9de893, 0xdf0f94d8, 0x58a95f9b, 0x0b33041f,
    0x8c95cf5c, 0x73e5570e, 0xf4439c4d, 0xa7d9c7c9, 0x207f0c8a,
    0x00ed70c1, 0x874bbb82, 0xd4d1e006, 0x53772b45, 0x95f51890,
    0x1253d3d3, 0x41c98857, 0xc66f4314, 0xe6fd3f5f, 0x615bf41c,
    0x32c1af98, 0xb56764db, 0x64b4ce73, 0xe3120530, 0xb0885eb4,
    0x372e95f7, 0x17bce9bc, 0x901a22ff, 0xc380797b, 0x4426b238,
    0x82a481ed, 0x05024aae, 0x5698112a, 0xd13eda69, 0xf1aca622,
    0x760a6d61, 0x259036e5, 0xa236fda6, 0xba8ccbe8, 0x3d2a00ab,
    0x6eb05b2f, 0xe916906c, 0xc984ec27, 0x4e222764, 0x1db87ce0,
    0x9a1eb7a3, 0x5c9c8476, 0xdb3a4f35, 0x88a014b1, 0x0f06dff2,
    0x2f94a3b9, 0xa83268fa, 0xfba8337e, 0x7c0ef83d, 0xaddd5295,
    0x2a7b99d6, 0x79e1c252, 0xfe470911, 0xded5755a, 0x5973be19,
    0x0ae9e59d, 0x8d4f2ede, 0x4bcd1d0b, 0xcc6bd648, 0x9ff18dcc,
    0x1857468f, 0x38c53ac4, 0xbf63f187, 0xecf9aa03, 0x6b5f6140,
    0x942ff912, 0x13893251, 0x401369d5, 0xc7b5a296, 0xe727dedd,
    0x6081159e, 0x331b4e1a, 0xb4bd8559, 0x723fb68c, 0xf5997dcf,
    0xa603264b, 0x21a5ed08, 0x01379143, 0x86915a00, 0xd50b0184,
    0x52adcac7, 0x837e606f, 0x04d8ab2c, 0x5742f0a8, 0xd0e43beb,
    0xf07647a0, 0x77d08ce3, 0x244ad767, 0xa3ec1c24, 0x656e2ff1,
    0xe2c8e4b2, 0xb152bf36, 0x36f47475, 0x1666083e, 0x91c0c37d,
    0xc25a98f9, 0x45fc53ba, 0xe7caae1c, 0x606c655f, 0x33f63edb,
    0xb450f598, 0x94c289d3, 0x13644290, 0x40fe1914, 0xc758d257,
    0x01dae182, 0x867c2ac1, 0xd5e67145, 0x5240ba06, 0x72d2c64d,
    0xf5740d0e, 0xa6ee568a, 0x21489dc9, 0xf09b3761, 0x773dfc22,
    0x24a7a7a6, 0xa3016ce5, 0x839310ae, 0x0435dbed, 0x57af8069,
    0xd0094b2a, 0x168b78ff, 0x912db3bc, 0xc2b7e838, 0x4511237b,
    0x65835f30, 0xe2259473, 0xb1bfcff7, 0x361904b4, 0xc9699ce6,
    0x4ecf57a5, 0x1d550c21, 0x9af3c762, 0xba61bb29, 0x3dc7706a,
    0x6e5d2bee, 0xe9fbe0ad, 0x2f79d378, 0xa8df183b, 0xfb4543bf,
    0x7ce388fc, 0x5c71f4b7, 0xdbd73ff4, 0x884d6470, 0x0febaf33,
    0xde38059b, 0x599eced8, 0x0a04955c, 0x8da25e1f, 0xad302254,
    0x2a96e917, 0x790cb293, 0xfeaa79d0, 0x38284a05, 0xbf8e8146,
    0xec14dac2, 0x6bb21181, 0x4b206dca, 0xcc86a689, 0x9f1cfd0d,
    0x18ba364e}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x0000000000000000, 0x43cba68700000000, 0xc7903cd400000000,
    0x845b9a5300000000, 0xcf27087300000000, 0x8cecaef400000000,
    0x08b734a700000000, 0x4b7c922000000000, 0x9e4f10e600000000,
    0xdd84b66100000000, 0x59df2c3200000000, 0x1a148ab500000000,
    0x5168189500000000, 0x12a3be1200000000, 0x96f8244100000000,
    0xd53382c600000000, 0x7d99511700000000, 0x3e52f79000000000,
    0xba096dc300000000, 0xf9c2cb4400000000, 0xb2be596400000000,
    0xf175ffe300000000, 0x752e65b000000000, 0x36e5c33700000000,
    0xe3d641f100000000, 0xa01de77600000000, 0x24467d2500000000,
    0x678ddba200000000, 0x2cf1498200000000, 0x6f3aef0500000000,
    0xeb61755600000000, 0xa8aad3d100000000, 0xfa32a32e00000000,
    0xb9f905a900000000, 0x3da29ffa00000000, 0x7e69397d00000000,
    0x3515ab5d00000000, 0x76de0dda00000000, 0xf285978900000000,
    0xb14e310e00000000, 0x647db3c800000000, 0x27b6154f00000000,
    0xa3ed8f1c00000000, 0xe026299b00000000, 0xab5abbbb00000000,
    0xe8911d3c00000000, 0x6cca876f00000000, 0x2f0121e800000000,
    0x87abf23900000000, 0xc46054be00000000, 0x403bceed00000000,
    0x03f0686a00000000, 0x488cfa4a00000000, 0x0b475ccd00000000,
    0x8f1cc69e00000000, 0xccd7601900000000, 0x19e4e2df00000000,
    0x5a2f445800000000, 0xde74de0b00000000, 0x9dbf788c00000000,
    0xd6c3eaac00000000, 0x95084c2b00000000, 0x1153d67800000000,
    0x529870ff00000000, 0xf465465d00000000, 0xb7aee0da00000000,
    0x33f57a8900000000, 0x703edc0e00000000, 0x3b424e2e00000000,
    0x7889e8a900000000, 0xfcd272fa00000000, 0xbf19d47d00000000,
    0x6a2a56bb00000000, 0x29e1f03c00000000, 0xadba6a6f00000000,
    0xee71cce800000000, 0xa50d5ec800000000, 0xe6c6f84f00000000,
    0x629d621c00000000, 0x2156c49b00000000, 0x89fc174a00000000,
    0xca37b1cd00000000, 0x4e6c2b9e00000000, 0x0da78d1900000000,
    0x46db1f3900000000, 0x0510b9be00000000, 0x814b23ed00000000,
    0xc280856a00000000, 0x17b307ac00000000, 0x5478a12b00000000,
    0xd0233b7800000000, 0x93e89dff00000000, 0xd8940fdf00000000,
    0x9b5fa95800000000, 0x1f04330b00000000, 0x5ccf958c00000000,
    0x0e57e57300000000, 0x4d9c43f400000000, 0xc9c7d9a700000000,
    0x8a0c7f2000000000, 0xc170ed0000000000, 0x82bb4b8700000000,
    0x06e0d1d400000000, 0x452b775300000000, 0x9018f59500000000,
    0xd3d3531200000000, 0x5788c94100000000, 0x14436fc600000000,
    0x5f3ffde600000000, 0x1cf45b6100000000, 0x98afc13200000000,
    0xdb6467b500000000, 0x73ceb46400000000, 0x300512e300000000,
    0xb45e88b000000000, 0xf7952e3700000000, 0xbce9bc1700000000,
    0xff221a9000000000, 0x7b7980c300000000, 0x38b2264400000000,
    0xed81a48200000000, 0xae4a020500000000, 0x2a11985600000000,
    0x69da3ed100000000, 0x22a6acf100000000, 0x616d0a7600000000,
    0xe536902500000000, 0xa6fd36a200000000, 0xe8cb8cba00000000,
    0xab002a3d00000000, 0x2f5bb06e00000000, 0x6c9016e900000000,
    0x27ec84c900000000, 0x6427224e00000000, 0xe07cb81d00000000,
    0xa3b71e9a00000000, 0x76849c5c00000000, 0x354f3adb00000000,
    0xb114a08800000000, 0xf2df060f00000000, 0xb9a3942f00000000,
    0xfa6832a800000000, 0x7e33a8fb00000000, 0x3df80e7c00000000,
    0x9552ddad00000000, 0xd6997b2a00000000, 0x52c2e17900000000,
    0x110947fe00000000, 0x5a75d5de00000000, 0x19be735900000000,
    0x9de5e90a00000000, 0xde2e4f8d00000000, 0x0b1dcd4b00000000,
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    0xe1a20bbb00000000, 0xc6c72e3a00000000, 0xee6e306200000000,
    0xc90b15e300000000, 0x3d7f6b7f00000000, 0x1a1a4efe00000000,
    0x32b350a600000000, 0x15d6752700000000, 0x62e16d1600000000,
    0x4584489700000000, 0x6d2d56cf00000000, 0x4a48734e00000000,
    0x834366ad00000000, 0xa426432c00000000, 0x8c8f5d7400000000,
    0xabea78f500000000, 0xdcdd60c400000000, 0xfbb8454500000000,
    0xd3115b1d00000000, 0xf4747e9c00000000, 0x7afed6fe00000000,
    0x5d9bf37f00000000, 0x7532ed2700000000, 0x5257c8a600000000,
    0x2560d09700000000, 0x0205f51600000000, 0x2aaceb4e00000000,
    0x0dc9cecf00000000, 0xc4c2db2c00000000, 0xe3a7fead00000000,
    0xcb0ee0f500000000, 0xec6bc57400000000, 0x9b5cdd4500000000,
    0xbc39f8c400000000, 0x9490e69c00000000, 0xb3f5c31d00000000,
    0x4781bd8100000000, 0x60e4980000000000, 0x484d865800000000,
    0x6f28a3d900000000, 0x181fbbe800000000, 0x3f7a9e6900000000,
    0x17d3803100000000, 0x30b6a5b000000000, 0xf9bdb05300000000,
    0xded895d200000000, 0xf6718b8a00000000, 0xd114ae0b00000000,
    0xa623b63a00000000, 0x814693bb00000000, 0xa9ef8de300000000,
    0x8e8aa86200000000, 0xb5fadc2600000000, 0x929ff9a700000000,
    0xba36e7ff00000000, 0x9d53c27e00000000, 0xea64da4f00000000,
    0xcd01ffce00000000, 0xe5a8e19600000000, 0xc2cdc41700000000,
    0x0bc6d1f400000000, 0x2ca3f47500000000, 0x040aea2d00000000,
    0x236fcfac00000000, 0x5458d79d00000000, 0x733df21c00000000,
    0x5b94ec4400000000, 0x7cf1c9c500000000, 0x8885b75900000000,
    0xafe092d800000000, 0x87498c8000000000, 0xa02ca90100000000,
    0xd71bb13000000000, 0xf07e94b100000000, 0xd8d78ae900000000,
    0xffb2af6800000000, 0x36b9ba8b00000000, 0x11dc9f0a00000000,
    0x3975815200000000, 0x1e10a4d300000000, 0x6927bce200000000,
    0x4e42996300000000, 0x66eb873b00000000, 0x418ea2ba00000000,
    0xcf040ad800000000, 0xe8612f5900000000, 0xc0c8310100000000,
    0xe7ad148000000000, 0x909a0cb100000000, 0xb7ff293000000000,
    0x9f56376800000000, 0xb83312e900000000, 0x7138070a00000000,
    0x565d228b00000000, 0x7ef43cd300000000, 0x5991195200000000,
    0x2ea6016300000000, 0x09c324e200000000, 0x216a3aba00000000,
    0x060f1f3b00000000, 0xf27b61a700000000, 0xd51e442600000000,
    0xfdb75a7e00000000, 0xdad27fff00000000, 0xade567ce00000000,
    0x8a80424f00000000, 0xa2295c1700000000, 0x854c799600000000,
    0x4c476c7500000000, 0x6b2249f400000000, 0x438b57ac00000000,
    0x64ee722d00000000, 0x13d96a1c00000000, 0x34bc4f9d00000000,
    0x1c1551c500000000, 0x3b70744400000000, 0x6af5b94d00000000,
    0x4d909ccc00000000, 0x6539829400000000, 0x425ca71500000000,
    0x356bbf2400000000, 0x120e9aa500000000, 0x3aa784fd00000000,
    0x1dc2a17c00000000, 0xd4c9b49f00000000, 0xf3ac911e00000000,
    0xdb058f4600000000, 0xfc60aac700000000, 0x8b57b2f600000000,
    0xac32977700000000, 0x849b892f00000000, 0xa3feacae00000000,
    0x578ad23200000000, 0x70eff7b300000000, 0x5846e9eb00000000,
    0x7f23cc6a00000000, 0x0814d45b00000000, 0x2f71f1da00000000,
    0x07d8ef8200000000, 0x20bdca0300000000, 0xe9b6dfe000000000,
    0xced3fa6100000000, 0xe67ae43900000000, 0xc11fc1b800000000,
    0xb628d98900000000, 0x914dfc0800000000, 0xb9e4e25000000000,
    0x9e81c7d100000000, 0x100b6fb300000000, 0x376e4a3200000000,
    0x1fc7546a00000000, 0x38a271eb00000000, 0x4f9569da00000000,
    0x68f04c5b00000000, 0x4059520300000000, 0x673c778200000000,
    0xae37626100000000, 0x895247e000000000, 0xa1fb59b800000000,
    0x869e7c3900000000, 0xf1a9640800000000, 0xd6cc418900000000,
    0xfe655fd100000000, 0xd9007a5000000000, 0x2d7404cc00000000,
    0x0a11214d00000000, 0x22b83f1500000000, 0x05dd1a9400000000,
    0x72ea02a500000000, 0x558f272400000000, 0x7d26397c00000000,
    0x5a431cfd00000000, 0x9348091e00000000, 0xb42d2c9f00000000,
    0x9c8432c700000000, 0xbbe1174600000000, 0xccd60f7700000000,
    0xebb32af600000000, 0xc31a34ae00000000, 0xe47f112f00000000,
    0xdf0f656b00000000, 0xf86a40ea00000000, 0xd0c35eb200000000,
    0xf7a67b3300000000, 0x8091630200000000, 0xa7f4468300000000,
    0x8f5d58db00000000, 0xa8387d5a00000000, 0x613368b900000000,
    0x46564d3800000000, 0x6eff536000000000, 0x499a76e100000000,
    0x3ead6ed000000000, 0x19c84b5100000000, 0x3161550900000000,
    0x1604708800000000, 0xe2700e1400000000, 0xc5152b9500000000,
    0xedbc35cd00000000, 0xcad9104c00000000, 0xbdee087d00000000,
    0x9a8b2dfc00000000, 0xb22233a400000000, 0x9547162500000000,
    0x5c4c03c600000000, 0x7b29264700000000, 0x5380381f00000000,
    0x74e51d9e00000000, 0x03d205af00000000, 0x24b7202e00000000,
    0x0c1e3e7600000000, 0x2b7b1bf700000000, 0xa5f1b39500000000,
    0x8294961400000000, 0xaa3d884c00000000, 0x8d58adcd00000000,
    0xfa6fb5fc00000000, 0xdd0a907d00000000, 0xf5a38e2500000000,
    0xd2c6aba400000000, 0x1bcdbe4700000000, 0x3ca89bc600000000,
    0x1401859e00000000, 0x3364a01f00000000, 0x4453b82e00000000,
    0x63369daf00000000, 0x4b9f83f700000000, 0x6cfaa67600000000,
    0x988ed8ea00000000, 0xbfebfd6b00000000, 0x9742e33300000000,
    0xb027c6b200000000, 0xc710de8300000000, 0xe075fb0200000000,
    0xc8dce55a00000000, 0xefb9c0db00000000, 0x26b2d53800000000,
    0x01d7f0b900000000, 0x297eeee100000000, 0x0e1bcb6000000000,
    0x792cd35100000000, 0x5e49f6d000000000, 0x76e0e88800000000,
    0x5185cd0900000000}};

#else /* W == 4 */

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0x9ba54c6f, 0xec3b9e9f, 0x779ed2f0, 0x03063b7f,
    0x98a37710, 0xef3da5e0, 0x7498e98f, 0x060c76fe, 0x9da93a91,
    0xea37e861, 0x7192a40e, 0x050a4d81, 0x9eaf01ee, 0xe931d31e,
    0x72949f71, 0x0c18edfc, 0x97bda193, 0xe0237363, 0x7b863f0c,
    0x0f1ed683, 0x94bb9aec, 0xe325481c, 0x78800473, 0x0a149b02,
    0x91b1d76d, 0xe62f059d, 0x7d8a49f2, 0x0912a07d, 0x92b7ec12,
    0xe5293ee2, 0x7e8c728d, 0x1831dbf8, 0x83949797, 0xf40a4567,
    0x6faf0908, 0x1b37e087, 0x8092ace8, 0xf70c7e18, 0x6ca93277,
    0x1e3dad06, 0x8598e169, 0xf2063399, 0x69a37ff6, 0x1d3b9679,
    0x869eda16, 0xf10008e6, 0x6aa54489, 0x14293604, 0x8f8c7a6b,
    0xf812a89b, 0x63b7e4f4, 0x172f0d7b, 0x8c8a4114, 0xfb1493e4,
    0x60b1df8b, 0x122540fa, 0x89800c95, 0xfe1ede65, 0x65bb920a,
    0x11237b85, 0x8a8637ea, 0xfd18e51a, 0x66bda975, 0x3063b7f0,
    0xabc6fb9f, 0xdc58296f, 0x47fd6500, 0x33658c8f, 0xa8c0c0e0,
    0xdf5e1210, 0x44fb5e7f, 0x366fc10e, 0xadca8d61, 0xda545f91,
    0x41f113fe, 0x3569fa71, 0xaeccb61e, 0xd95264ee, 0x42f72881,
    0x3c7b5a0c, 0xa7de1663, 0xd040c493, 0x4be588fc, 0x3f7d6173,
    0xa4d82d1c, 0xd346ffec, 0x48e3b383, 0x3a772cf2, 0xa1d2609d,
    0xd64cb26d, 0x4de9fe02, 0x3971178d, 0xa2d45be2, 0xd54a8912,
    0x4eefc57d, 0x28526c08, 0xb3f72067, 0xc469f297, 0x5fccbef8,
    0x2b545777, 0xb0f11b18, 0xc76fc9e8, 0x5cca8587, 0x2e5e1af6,
    0xb5fb5699, 0xc2658469, 0x59c0c806, 0x2d582189, 0xb6fd6de6,
    0xc163bf16, 0x5ac6f379, 0x244a81f4, 0xbfefcd9b, 0xc8711f6b,
    0x53d45304, 0x274cba8b, 0xbce9f6e4, 0xcb772414, 0x50d2687b,
    0x2246f70a, 0xb9e3bb65, 0xce7d6995, 0x55d825fa, 0x2140cc75,
    0xbae5801a, 0xcd7b52ea, 0x56de1e85, 0x60c76fe0, 0xfb62238f,
    0x8cfcf17f, 0x1759bd10, 0x63c1549f, 0xf86418f0, 0x8ffaca00,
    0x145f866f, 0x66cb191e, 0xfd6e5571, 0x8af08781, 0x1155cbee,
    0x65cd2261, 0xfe686e0e, 0x89f6bcfe, 0x1253f091, 0x6cdf821c,
    0xf77ace73, 0x80e41c83, 0x1b4150ec, 0x6fd9b963, 0xf47cf50c,
    0x83e227fc, 0x18476b93, 0x6ad3f4e2, 0xf176b88d, 0x86e86a7d,
    0x1d4d2612, 0x69d5cf9d, 0xf27083f2, 0x85ee5102, 0x1e4b1d6d,
    0x78f6b418, 0xe353f877, 0x94cd2a87, 0x0f6866e8, 0x7bf08f67,
    0xe055c308, 0x97cb11f8, 0x0c6e5d97, 0x7efac2e6, 0xe55f8e89,
    0x92c15c79, 0x09641016, 0x7dfcf999, 0xe659b5f6, 0x91c76706,
    0x0a622b69, 0x74ee59e4, 0xef4b158b, 0x98d5c77b, 0x03708b14,
    0x77e8629b, 0xec4d2ef4, 0x9bd3fc04, 0x0076b06b, 0x72e22f1a,
    0xe9476375, 0x9ed9b185, 0x057cfdea, 0x71e41465, 0xea41580a,
    0x9ddf8afa, 0x067ac695, 0x50a4d810, 0xcb01947f, 0xbc9f468f,
    0x273a0ae0, 0x53a2e36f, 0xc807af00, 0xbf997df0, 0x243c319f,
    0x56a8aeee, 0xcd0de281, 0xba933071, 0x21367c1e, 0x55ae9591,
    0xce0bd9fe, 0xb9950b0e, 0x22304761, 0x5cbc35ec, 0xc7197983,
    0xb087ab73, 0x2b22e71c, 0x5fba0e93, 0xc41f42fc, 0xb381900c,
    0x2824dc63, 0x5ab04312, 0xc1150f7d, 0xb68bdd8d, 0x2d2e91e2,
    0x59b6786d, 0xc2133402, 0xb58de6f2, 0x2e28aa9d, 0x489503e8,
    0xd3304f87, 0xa4ae9d77, 0x3f0bd118, 0x4b933897, 0xd03674f8,
    0xa7a8a608, 0x3c0dea67, 0x4e997516, 0xd53c3979, 0xa2a2eb89,
    0x3907a7e6, 0x4d9f4e69, 0xd63a0206, 0xa1a4d0f6, 0x3a019c99,
    0x448dee14, 0xdf28a27b, 0xa8b6708b, 0x33133ce4, 0x478bd56b,
    0xdc2e9904, 0xabb04bf4, 0x3015079b, 0x428198ea, 0xd924d485,
    0xaeba0675, 0x351f4a1a, 0x4187a395, 0xda22effa, 0xadbc3d0a,
    0x36197165},
   {0x00000000, 0xc18edfc0, 0x586cb9c1, 0x99e26601, 0xb0d97382,
    0x7157ac42, 0xe8b5ca43, 0x293b1583, 0xbac3e145, 0x7b4d3e85,
    0xe2af5884, 0x23218744, 0x0a1a92c7, 0xcb944d07, 0x52762b06,
    0x93f8f4c6, 0xaef6c4cb, 0x6f781b0b, 0xf69a7d0a, 0x3714a2ca,
    0x1e2fb749, 0xdfa16889, 0x46430e88, 0x87cdd148, 0x1435258e,
    0xd5bbfa4e, 0x4c599c4f, 0x8dd7438f, 0xa4ec560c, 0x656289cc,
    0xfc80efcd, 0x3d0e300d, 0x869c8fd7, 0x47125017, 0xdef03616,
    0x1f7ee9d6, 0x3645fc55, 0xf7cb2395, 0x6e294594, 0xafa79a54,
    0x3c5f6e92, 0xfdd1b152, 0x6433d753, 0xa5bd0893, 0x8c861d10,
    0x4d08c2d0, 0xd4eaa4d1, 0x15647b11, 0x286a4b1c, 0xe9e494dc,
    0x7006f2dd, 0xb1882d1d, 0x98b3389e, 0x593de75e, 0xc0df815f,
    0x01515e9f, 0x92a9aa59, 0x53277599, 0xcac51398, 0x0b4bcc58,
    0x2270d9db, 0xe3fe061b, 0x7a1c601a, 0xbb92bfda, 0xd64819ef,
    0x17c6c62f, 0x8e24a02e, 0x4faa7fee, 0x66916a6d, 0xa71fb5ad,
    0x3efdd3ac, 0xff730c6c, 0x6c8bf8aa, 0xad05276a, 0x34e7416b,
    0xf5699eab, 0xdc528b28, 0x1ddc54e8, 0x843e32e9, 0x45b0ed29,
    0x78bedd24, 0xb93002e4, 0x20d264e5, 0xe15cbb25, 0xc867aea6,
    0x09e97166, 0x900b1767, 0x5185c8a7, 0xc27d3c61, 0x03f3e3a1,
    0x9a1185a0, 0x5b9f5a60, 0x72a44fe3, 0xb32a9023, 0x2ac8f622,
    0xeb4629e2, 0x50d49638, 0x915a49f8, 0x08b82ff9, 0xc936f039,
    0xe00de5ba, 0x21833a7a, 0xb8615c7b, 0x79ef83bb, 0xea17777d,
    0x2b99a8bd, 0xb27bcebc, 0x73f5117c, 0x5ace04ff, 0x9b40db3f,
    0x02a2bd3e, 0xc32c62fe, 0xfe2252f3, 0x3fac8d33, 0xa64eeb32,
    0x67c034f2, 0x4efb2171, 0x8f75feb1, 0x169798b0, 0xd7194770,
    0x44e1b3b6, 0x856f6c76, 0x1c8d0a77, 0xdd03d5b7, 0xf438c034,
    0x35b61ff4, 0xac5479f5, 0x6ddaa635, 0x77e1359f, 0xb66fea5f,
    0x2f8d8c5e, 0xee03539e, 0xc738461d, 0x06b699dd, 0x9f54ffdc,
    0x5eda201c, 0xcd22d4da, 0x0cac0b1a, 0x954e6d1b, 0x54c0b2db,
    0x7dfba758, 0xbc757898, 0x25971e99, 0xe419c159, 0xd917f154,
    0x18992e94, 0x817b4895, 0x40f59755, 0x69ce82d6, 0xa8405d16,
    0x31a23b17, 0xf02ce4d7, 0x63d41011, 0xa25acfd1, 0x3bb8a9d0,
    0xfa367610, 0xd30d6393, 0x1283bc53, 0x8b61da52, 0x4aef0592,
    0xf17dba48, 0x30f36588, 0xa9110389, 0x689fdc49, 0x41a4c9ca,
    0x802a160a, 0x19c8700b, 0xd846afcb, 0x4bbe5b0d, 0x8a3084cd,
    0x13d2e2cc, 0xd25c3d0c, 0xfb67288f, 0x3ae9f74f, 0xa30b914e,
    0x62854e8e, 0x5f8b7e83, 0x9e05a143, 0x07e7c742, 0xc6691882,
    0xef520d01, 0x2edcd2c1, 0xb73eb4c0, 0x76b06b00, 0xe5489fc6,
    0x24c64006, 0xbd242607, 0x7caaf9c7, 0x5591ec44, 0x941f3384,
    0x0dfd5585, 0xcc738a45, 0xa1a92c70, 0x6027f3b0, 0xf9c595b1,
    0x384b4a71, 0x11705ff2, 0xd0fe8032, 0x491ce633, 0x889239f3,
    0x1b6acd35, 0xdae412f5, 0x430674f4, 0x8288ab34, 0xabb3beb7,
    0x6a3d6177, 0xf3df0776, 0x3251d8b6, 0x0f5fe8bb, 0xced1377b,
    0x5733517a, 0x96bd8eba, 0xbf869b39, 0x7e0844f9, 0xe7ea22f8,
    0x2664fd38, 0xb59c09fe, 0x7412d63e, 0xedf0b03f, 0x2c7e6fff,
    0x05457a7c, 0xc4cba5bc, 0x5d29c3bd, 0x9ca71c7d, 0x2735a3a7,
    0xe6bb7c67, 0x7f591a66, 0xbed7c5a6, 0x97ecd025, 0x56620fe5,
    0xcf8069e4, 0x0e0eb624, 0x9df642e2, 0x5c789d22, 0xc59afb23,
    0x041424e3, 0x2d2f3160, 0xeca1eea0, 0x754388a1, 0xb4cd5761,
    0x89c3676c, 0x484db8ac, 0xd1afdead, 0x1021016d, 0x391a14ee,
    0xf894cb2e, 0x6176ad2f, 0xa0f872ef, 0x33008629, 0xf28e59e9,
    0x6b6c3fe8, 0xaae2e028, 0x83d9f5ab, 0x42572a6b, 0xdbb54c6a,
    0x1a3b93aa},
   {0x00000000, 0xefc26b3e, 0x04f5d03d, 0xeb37bb03, 0x09eba07a,
    0xe629cb44, 0x0d1e7047, 0xe2dc1b79, 0x13d740f4, 0xfc152bca,
    0x172290c9, 0xf8e0fbf7, 0x1a3ce08e, 0xf5fe8bb0, 0x1ec930b3,
    0xf10b5b8d, 0x27ae81e8, 0xc86cead6, 0x235b51d5, 0xcc993aeb,
    0x2e452192, 0xc1874aac, 0x2ab0f1af, 0xc5729a91, 0x3479c11c,
    0xdbbbaa22, 0x308c1121, 0xdf4e7a1f, 0x3d926166, 0xd2500a58,
    0x3967b15b, 0xd6a5da65, 0x4f5d03d0, 0xa09f68ee, 0x4ba8d3ed,
    0xa46ab8d3, 0x46b6a3aa, 0xa974c894, 0x42437397, 0xad8118a9,
    0x5c8a4324, 0xb348281a, 0x587f9319, 0xb7bdf827, 0x5561e35e,
    0xbaa38860, 0x51943363, 0xbe56585d, 0x68f38238, 0x8731e906,
    0x6c065205, 0x83c4393b, 0x61182242, 0x8eda497c, 0x65edf27f,
    0x8a2f9941, 0x7b24c2cc, 0x94e6a9f2, 0x7fd112f1, 0x901379cf,
    0x72cf62b6, 0x9d0d0988, 0x763ab28b, 0x99f8d9b5, 0x9eba07a0,
    0x71786c9e, 0x9a4fd79d, 0x758dbca3, 0x9751a7da, 0x7893cce4,
    0x93a477e7, 0x7c661cd9, 0x8d6d4754, 0x62af2c6a, 0x89989769,
    0x665afc57, 0x8486e72e, 0x6b448c10, 0x80733713, 0x6fb15c2d,
    0xb9148648, 0x56d6ed76, 0xbde15675, 0x52233d4b, 0xb0ff2632,
    0x5f3d4d0c, 0xb40af60f, 0x5bc89d31, 0xaac3c6bc, 0x4501ad82,
    0xae361681, 0x41f47dbf, 0xa32866c6, 0x4cea0df8, 0xa7ddb6fb,
    0x481fddc5, 0xd1e70470, 0x3e256f4e, 0xd512d44d, 0x3ad0bf73,
    0xd80ca40a, 0x37cecf34, 0xdcf97437, 0x333b1f09, 0xc2304484,
    0x2df22fba, 0xc6c594b9, 0x2907ff87, 0xcbdbe4fe, 0x24198fc0,
    0xcf2e34c3, 0x20ec5ffd, 0xf6498598, 0x198beea6, 0xf2bc55a5,
    0x1d7e3e9b, 0xffa225e2, 0x10604edc, 0xfb57f5df, 0x14959ee1,
    0xe59ec56c, 0x0a5cae52, 0xe16b1551, 0x0ea97e6f, 0xec756516,
    0x03b70e28, 0xe880b52b, 0x0742de15, 0xe6050901, 0x09c7623f,
    0xe2f0d93c, 0x0d32b202, 0xefeea97b, 0x002cc245, 0xeb1b7946,
    0x04d91278, 0xf5d249f5, 0x1a1022cb, 0xf12799c8, 0x1ee5f2f6,
    0xfc39e98f, 0x13fb82b1, 0xf8cc39b2, 0x170e528c, 0xc1ab88e9,
    0x2e69e3d7, 0xc55e58d4, 0x2a9c33ea, 0xc8402893, 0x278243ad,
    0xccb5f8ae, 0x23779390, 0xd27cc81d, 0x3dbea323, 0xd6891820,
    0x394b731e, 0xdb976867, 0x34550359, 0xdf62b85a, 0x30a0d364,
    0xa9580ad1, 0x469a61ef, 0xadaddaec, 0x426fb1d2, 0xa0b3aaab,
    0x4f71c195, 0xa4467a96, 0x4b8411a8, 0xba8f4a25, 0x554d211b,
    0xbe7a9a18, 0x51b8f126, 0xb364ea5f, 0x5ca68161, 0xb7913a62,
    0x5853515c, 0x8ef68b39, 0x6134e007, 0x8a035b04, 0x65c1303a,
    0x871d2b43, 0x68df407d, 0x83e8fb7e, 0x6c2a9040, 0x9d21cbcd,
    0x72e3a0f3, 0x99d41bf0, 0x761670ce, 0x94ca6bb7, 0x7b080089,
    0x903fbb8a, 0x7ffdd0b4, 0x78bf0ea1, 0x977d659f, 0x7c4ade9c,
    0x9388b5a2, 0x7154aedb, 0x9e96c5e5, 0x75a17ee6, 0x9a6315d8,
    0x6b684e55, 0x84aa256b, 0x6f9d9e68, 0x805ff556, 0x6283ee2f,
    0x8d418511, 0x66763e12, 0x89b4552c, 0x5f118f49, 0xb0d3e477,
    0x5be45f74, 0xb426344a, 0x56fa2f33, 0xb938440d, 0x520fff0e,
    0xbdcd9430, 0x4cc6cfbd, 0xa304a483, 0x48331f80, 0xa7f174be,
    0x452d6fc7, 0xaaef04f9, 0x41d8bffa, 0xae1ad4c4, 0x37e20d71,
    0xd820664f, 0x3317dd4c, 0xdcd5b672, 0x3e09ad0b, 0xd1cbc635,
    0x3afc7d36, 0xd53e1608, 0x24354d85, 0xcbf726bb, 0x20c09db8,
    0xcf02f686, 0x2ddeedff, 0xc21c86c1, 0x292b3dc2, 0xc6e956fc,
    0x104c8c99, 0xff8ee7a7, 0x14b95ca4, 0xfb7b379a, 0x19a72ce3,
    0xf66547dd, 0x1d52fcde, 0xf29097e0, 0x039bcc6d, 0xec59a753,
    0x076e1c50, 0xe8ac776e, 0x0a706c17, 0xe5b20729, 0x0e85bc2a,
    0xe147d714},
   {0x00000000, 0x177b1443, 0x2ef62886, 0x398d3cc5, 0x5dec510c,
    0x4a97454f, 0x731a798a, 0x64616dc9, 0xbbd8a218, 0xaca3b65b,
    0x952e8a9e, 0x82559edd, 0xe634f314, 0xf14fe757, 0xc8c2db92,
    0xdfb9cfd1, 0xacc04271, 0xbbbb5632, 0x82366af7, 0x954d7eb4,
    0xf12c137d, 0xe657073e, 0xdfda3bfb, 0xc8a12fb8, 0x1718e069,
    0x0063f42a, 0x39eec8ef, 0x2e95dcac, 0x4af4b165, 0x5d8fa526,
    0x640299e3, 0x73798da0, 0x82f182a3, 0x958a96e0, 0xac07aa25,
    0xbb7cbe66, 0xdf1dd3af, 0xc866c7ec, 0xf1ebfb29, 0xe690ef6a,
    0x392920bb, 0x2e5234f8, 0x17df083d, 0x00a41c7e, 0x64c571b7,
    0x73be65f4, 0x4a335931, 0x5d484d72, 0x2e31c0d2, 0x394ad491,
    0x00c7e854, 0x17bcfc17, 0x73dd91de, 0x64a6859d, 0x5d2bb958,
    0x4a50ad1b, 0x95e962ca, 0x82927689, 0xbb1f4a4c, 0xac645e0f,
    0xc80533c6, 0xdf7e2785, 0xe6f31b40, 0xf1880f03, 0xde920307,
    0xc9e91744, 0xf0642b81, 0xe71f3fc2, 0x837e520b, 0x94054648,
    0xad887a8d, 0xbaf36ece, 0x654aa11f, 0x7231b55c, 0x4bbc8999,
    0x5cc79dda, 0x38a6f013, 0x2fdde450, 0x1650d895, 0x012bccd6,
    0x72524176, 0x65295535, 0x5ca469f0, 0x4bdf7db3, 0x2fbe107a,
    0x38c50439, 0x014838fc, 0x16332cbf, 0xc98ae36e, 0xdef1f72d,
    0xe77ccbe8, 0xf007dfab, 0x9466b262, 0x831da621, 0xba909ae4,
    0xadeb8ea7, 0x5c6381a4, 0x4b1895e7, 0x7295a922, 0x65eebd61,
    0x018fd0a8, 0x16f4c4eb, 0x2f79f82e, 0x3802ec6d, 0xe7bb23bc,
    0xf0c037ff, 0xc94d0b3a, 0xde361f79, 0xba5772b0, 0xad2c66f3,
    0x94a15a36, 0x83da4e75, 0xf0a3c3d5, 0xe7d8d796, 0xde55eb53,
    0xc92eff10, 0xad4f92d9, 0xba34869a, 0x83b9ba5f, 0x94c2ae1c,
    0x4b7b61cd, 0x5c00758e, 0x658d494b, 0x72f65d08, 0x169730c1,
    0x01ec2482, 0x38611847, 0x2f1a0c04, 0x6655004f, 0x712e140c,
    0x48a328c9, 0x5fd83c8a, 0x3bb95143, 0x2cc24500, 0x154f79c5,
    0x02346d86, 0xdd8da257, 0xcaf6b614, 0xf37b8ad1, 0xe4009e92,
    0x8061f35b, 0x971ae718, 0xae97dbdd, 0xb9eccf9e, 0xca95423e,
    0xddee567d, 0xe4636ab8, 0xf3187efb, 0x97791332, 0x80020771,
    0xb98f3bb4, 0xaef42ff7, 0x714de026, 0x6636f465, 0x5fbbc8a0,
    0x48c0dce3, 0x2ca1b12a, 0x3bdaa569, 0x025799ac, 0x152c8def,
    0xe4a482ec, 0xf3df96af, 0xca52aa6a, 0xdd29be29, 0xb948d3e0,
    0xae33c7a3, 0x97befb66, 0x80c5ef25, 0x5f7c20f4, 0x480734b7,
    0x718a0872, 0x66f11c31, 0x029071f8, 0x15eb65bb, 0x2c66597e,
    0x3b1d4d3d, 0x4864c09d, 0x5f1fd4de, 0x6692e81b, 0x71e9fc58,
    0x15889191, 0x02f385d2, 0x3b7eb917, 0x2c05ad54, 0xf3bc6285,
    0xe4c776c6, 0xdd4a4a03, 0xca315e40, 0xae503389, 0xb92b27ca,
    0x80a61b0f, 0x97dd0f4c, 0xb8c70348, 0xafbc170b, 0x96312bce,
    0x814a3f8d, 0xe52b5244, 0xf2504607, 0xcbdd7ac2, 0xdca66e81,
    0x031fa150, 0x1464b513, 0x2de989d6, 0x3a929d95, 0x5ef3f05c,
    0x4988e41f, 0x7005d8da, 0x677ecc99, 0x14074139, 0x037c557a,
    0x3af169bf, 0x2d8a7dfc, 0x49eb1035, 0x5e900476, 0x671d38b3,
    0x70662cf0, 0xafdfe321, 0xb8a4f762, 0x8129cba7, 0x9652dfe4,
    0xf233b22d, 0xe548a66e, 0xdcc59aab, 0xcbbe8ee8, 0x3a3681eb,
    0x2d4d95a8, 0x14c0a96d, 0x03bbbd2e, 0x67dad0e7, 0x70a1c4a4,
    0x492cf861, 0x5e57ec22, 0x81ee23f3, 0x969537b0, 0xaf180b75,
    0xb8631f36, 0xdc0272ff, 0xcb7966bc, 0xf2f45a79, 0xe58f4e3a,
    0x96f6c39a, 0x818dd7d9, 0xb800eb1c, 0xaf7bff5f, 0xcb1a9296,
    0xdc6186d5, 0xe5ecba10, 0xf297ae53, 0x2d2e6182, 0x3a5575c1,
    0x03d84904, 0x14a35d47, 0x70c2308e, 0x67b924cd, 0x5e341808,
    0x494f0c4b}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x00000000, 0x43147b17, 0x8628f62e, 0xc53c8d39, 0x0c51ec5d,
    0x4f45974a, 0x8a791a73, 0xc96d6164, 0x18a2d8bb, 0x5bb6a3ac,
    0x9e8a2e95, 0xdd9e5582, 0x14f334e6, 0x57e74ff1, 0x92dbc2c8,
    0xd1cfb9df, 0x7142c0ac, 0x3256bbbb, 0xf76a3682, 0xb47e4d95,
    0x7d132cf1, 0x3e0757e6, 0xfb3bdadf, 0xb82fa1c8, 0x69e01817,
    0x2af46300, 0xefc8ee39, 0xacdc952e, 0x65b1f44a, 0x26a58f5d,
    0xe3990264, 0xa08d7973, 0xa382f182, 0xe0968a95, 0x25aa07ac,
    0x66be7cbb, 0xafd31ddf, 0xecc766c8, 0x29fbebf1, 0x6aef90e6,
    0xbb202939, 0xf834522e, 0x3d08df17, 0x7e1ca400, 0xb771c564,
    0xf465be73, 0x3159334a, 0x724d485d, 0xd2c0312e, 0x91d44a39,
    0x54e8c700, 0x17fcbc17, 0xde91dd73, 0x9d85a664, 0x58b92b5d,
    0x1bad504a, 0xca62e995, 0x89769282, 0x4c4a1fbb, 0x0f5e64ac,
    0xc63305c8, 0x85277edf, 0x401bf3e6, 0x030f88f1, 0x070392de,
    0x4417e9c9, 0x812b64f0, 0xc23f1fe7, 0x0b527e83, 0x48460594,
    0x8d7a88ad, 0xce6ef3ba, 0x1fa14a65, 0x5cb53172, 0x9989bc4b,
    0xda9dc75c, 0x13f0a638, 0x50e4dd2f, 0x95d85016, 0xd6cc2b01,
    0x76415272, 0x35552965, 0xf069a45c, 0xb37ddf4b, 0x7a10be2f,
    0x3904c538, 0xfc384801, 0xbf2c3316, 0x6ee38ac9, 0x2df7f1de,
    0xe8cb7ce7, 0xabdf07f0, 0x62b26694, 0x21a61d83, 0xe49a90ba,
    0xa78eebad, 0xa481635c, 0xe795184b, 0x22a99572, 0x61bdee65,
    0xa8d08f01, 0xebc4f416, 0x2ef8792f, 0x6dec0238, 0xbc23bbe7,
    0xff37c0f0, 0x3a0b4dc9, 0x791f36de, 0xb07257ba, 0xf3662cad,
    0x365aa194, 0x754eda83, 0xd5c3a3f0, 0x96d7d8e7, 0x53eb55de,
    0x10ff2ec9, 0xd9924fad, 0x9a8634ba, 0x5fbab983, 0x1caec294,
    0xcd617b4b, 0x8e75005c, 0x4b498d65, 0x085df672, 0xc1309716,
    0x8224ec01, 0x47186138, 0x040c1a2f, 0x4f005566, 0x0c142e71,
    0xc928a348, 0x8a3cd85f, 0x4351b93b, 0x0045c22c, 0xc5794f15,
    0x866d3402, 0x57a28ddd, 0x14b6f6ca, 0xd18a7bf3, 0x929e00e4,
    0x5bf36180, 0x18e71a97, 0xdddb97ae, 0x9ecfecb9, 0x3e4295ca,
    0x7d56eedd, 0xb86a63e4, 0xfb7e18f3, 0x32137997, 0x71070280,
    0xb43b8fb9, 0xf72ff4ae, 0x26e04d71, 0x65f43666, 0xa0c8bb5f,
    0xe3dcc048, 0x2ab1a12c, 0x69a5da3b, 0xac995702, 0xef8d2c15,
    0xec82a4e4, 0xaf96dff3, 0x6aaa52ca, 0x29be29dd, 0xe0d348b9,
    0xa3c733ae, 0x66fbbe97, 0x25efc580, 0xf4207c5f, 0xb7340748,
    0x72088a71, 0x311cf166, 0xf8719002, 0xbb65eb15, 0x7e59662c,
    0x3d4d1d3b, 0x9dc06448, 0xded41f5f, 0x1be89266, 0x58fce971,
    0x91918815, 0xd285f302, 0x17b97e3b, 0x54ad052c, 0x8562bcf3,
    0xc676c7e4, 0x034a4add, 0x405e31ca, 0x893350ae, 0xca272bb9,
    0x0f1ba680, 0x4c0fdd97, 0x4803c7b8, 0x0b17bcaf, 0xce2b3196,
    0x8d3f4a81, 0x44522be5, 0x074650f2, 0xc27addcb, 0x816ea6dc,
    0x50a11f03, 0x13b56414, 0xd689e92d, 0x959d923a, 0x5cf0f35e,
    0x1fe48849, 0xdad80570, 0x99cc7e67, 0x39410714, 0x7a557c03,
    0xbf69f13a, 0xfc7d8a2d, 0x3510eb49, 0x7604905e, 0xb3381d67,
    0xf02c6670, 0x21e3dfaf, 0x62f7a4b8, 0xa7cb2981, 0xe4df5296,
    0x2db233f2, 0x6ea648e5, 0xab9ac5dc, 0xe88ebecb, 0xeb81363a,
    0xa8954d2d, 0x6da9c014, 0x2ebdbb03, 0xe7d0da67, 0xa4c4a170,
    0x61f82c49, 0x22ec575e, 0xf323ee81, 0xb0379596, 0x750b18af,
    0x361f63b8, 0xff7202dc, 0xbc6679cb, 0x795af4f2, 0x3a4e8fe5,
    0x9ac3f696, 0xd9d78d81, 0x1ceb00b8, 0x5fff7baf, 0x96921acb,
    0xd58661dc, 0x10baece5, 0x53ae97f2, 0x82612e2d, 0xc175553a,
    0x0449d803, 0x475da314, 0x8e30c270, 0xcd24b967, 0x0818345e,
    0x4b0c4f49},
   {0x00000000, 0x3e6bc2ef, 0x3dd0f504, 0x03bb37eb, 0x7aa0eb09,
    0x44cb29e6, 0x47701e0d, 0x791bdce2, 0xf440d713, 0xca2b15fc,
    0xc9902217, 0xf7fbe0f8, 0x8ee03c1a, 0xb08bfef5, 0xb330c91e,
    0x8d5b0bf1, 0xe881ae27, 0xd6ea6cc8, 0xd5515b23, 0xeb3a99cc,
    0x9221452e, 0xac4a87c1, 0xaff1b02a, 0x919a72c5, 0x1cc17934,
    0x22aabbdb, 0x21118c30, 0x1f7a4edf, 0x6661923d, 0x580a50d2,
    0x5bb16739, 0x65daa5d6, 0xd0035d4f, 0xee689fa0, 0xedd3a84b,
    0xd3b86aa4, 0xaaa3b646, 0x94c874a9, 0x97734342, 0xa91881ad,
    0x24438a5c, 0x1a2848b3, 0x19937f58, 0x27f8bdb7, 0x5ee36155,
    0x6088a3ba, 0x63339451, 0x5d5856be, 0x3882f368, 0x06e93187,
    0x0552066c, 0x3b39c483, 0x42221861, 0x7c49da8e, 0x7ff2ed65,
    0x41992f8a, 0xccc2247b, 0xf2a9e694, 0xf112d17f, 0xcf791390,
    0xb662cf72, 0x88090d9d, 0x8bb23a76, 0xb5d9f899, 0xa007ba9e,
    0x9e6c7871, 0x9dd74f9a, 0xa3bc8d75, 0xdaa75197, 0xe4cc9378,
    0xe777a493, 0xd91c667c, 0x54476d8d, 0x6a2caf62, 0x69979889,
    0x57fc5a66, 0x2ee78684, 0x108c446b, 0x13377380, 0x2d5cb16f,
    0x488614b9, 0x76edd656, 0x7556e1bd, 0x4b3d2352, 0x3226ffb0,
    0x0c4d3d5f, 0x0ff60ab4, 0x319dc85b, 0xbcc6c3aa, 0x82ad0145,
    0x811636ae, 0xbf7df441, 0xc66628a3, 0xf80dea4c, 0xfbb6dda7,
    0xc5dd1f48, 0x7004e7d1, 0x4e6f253e, 0x4dd412d5, 0x73bfd03a,
    0x0aa40cd8, 0x34cfce37, 0x3774f9dc, 0x091f3b33, 0x844430c2,
    0xba2ff22d, 0xb994c5c6, 0x87ff0729, 0xfee4dbcb, 0xc08f1924,
    0xc3342ecf, 0xfd5fec20, 0x988549f6, 0xa6ee8b19, 0xa555bcf2,
    0x9b3e7e1d, 0xe225a2ff, 0xdc4e6010, 0xdff557fb, 0xe19e9514,
    0x6cc59ee5, 0x52ae5c0a, 0x51156be1, 0x6f7ea90e, 0x166575ec,
    0x280eb703, 0x2bb580e8, 0x15de4207, 0x010905e6, 0x3f62c709,
    0x3cd9f0e2, 0x02b2320d, 0x7ba9eeef, 0x45c22c00, 0x46791beb,
    0x7812d904, 0xf549d2f5, 0xcb22101a, 0xc89927f1, 0xf6f2e51e,
    0x8fe939fc, 0xb182fb13, 0xb239ccf8, 0x8c520e17, 0xe988abc1,
    0xd7e3692e, 0xd4585ec5, 0xea339c2a, 0x932840c8, 0xad438227,
    0xaef8b5cc, 0x90937723, 0x1dc87cd2, 0x23a3be3d, 0x201889d6,
    0x1e734b39, 0x676897db, 0x59035534, 0x5ab862df, 0x64d3a030,
    0xd10a58a9, 0xef619a46, 0xecdaadad, 0xd2b16f42, 0xabaab3a0,
    0x95c1714f, 0x967a46a4, 0xa811844b, 0x254a8fba, 0x1b214d55,
    0x189a7abe, 0x26f1b851, 0x5fea64b3, 0x6181a65c, 0x623a91b7,
    0x5c515358, 0x398bf68e, 0x07e03461, 0x045b038a, 0x3a30c165,
    0x432b1d87, 0x7d40df68, 0x7efbe883, 0x40902a6c, 0xcdcb219d,
    0xf3a0e372, 0xf01bd499, 0xce701676, 0xb76bca94, 0x8900087b,
    0x8abb3f90, 0xb4d0fd7f, 0xa10ebf78, 0x9f657d97, 0x9cde4a7c,
    0xa2b58893, 0xdbae5471, 0xe5c5969e, 0xe67ea175, 0xd815639a,
    0x554e686b, 0x6b25aa84, 0x689e9d6f, 0x56f55f80, 0x2fee8362,
    0x1185418d, 0x123e7666, 0x2c55b489, 0x498f115f, 0x77e4d3b0,
    0x745fe45b, 0x4a3426b4, 0x332ffa56, 0x0d4438b9, 0x0eff0f52,
    0x3094cdbd, 0xbdcfc64c, 0x83a404a3, 0x801f3348, 0xbe74f1a7,
    0xc76f2d45, 0xf904efaa, 0xfabfd841, 0xc4d41aae, 0x710de237,
    0x4f6620d8, 0x4cdd1733, 0x72b6d5dc, 0x0bad093e, 0x35c6cbd1,
    0x367dfc3a, 0x08163ed5, 0x854d3524, 0xbb26f7cb, 0xb89dc020,
    0x86f602cf, 0xffedde2d, 0xc1861cc2, 0xc23d2b29, 0xfc56e9c6,
    0x998c4c10, 0xa7e78eff, 0xa45cb914, 0x9a377bfb, 0xe32ca719,
    0xdd4765f6, 0xdefc521d, 0xe09790f2, 0x6dcc9b03, 0x53a759ec,
    0x501c6e07, 0x6e77ace8, 0x176c700a, 0x2907b2e5, 0x2abc850e,
    0x14d747e1},
   {0x00000000, 0xc0df8ec1, 0xc1b96c58, 0x0166e299, 0x8273d9b0,
    0x42ac5771, 0x43cab5e8, 0x83153b29, 0x45e1c3ba, 0x853e4d7b,
    0x8458afe2, 0x44872123, 0xc7921a0a, 0x074d94cb, 0x062b7652,
    0xc6f4f893, 0xcbc4f6ae, 0x0b1b786f, 0x0a7d9af6, 0xcaa21437,
    0x49b72f1e, 0x8968a1df, 0x880e4346, 0x48d1cd87, 0x8e253514,
    0x4efabbd5, 0x4f9c594c, 0x8f43d78d, 0x0c56eca4, 0xcc896265,
    0xcdef80fc, 0x0d300e3d, 0xd78f9c86, 0x17501247, 0x1636f0de,
    0xd6e97e1f, 0x55fc4536, 0x9523cbf7, 0x9445296e, 0x549aa7af,
    0x926e5f3c, 0x52b1d1fd, 0x53d73364, 0x9308bda5, 0x101d868c,
    0xd0c2084d, 0xd1a4ead4, 0x117b6415, 0x1c4b6a28, 0xdc94e4e9,
    0xddf20670, 0x1d2d88b1, 0x9e38b398, 0x5ee73d59, 0x5f81dfc0,
    0x9f5e5101, 0x59aaa992, 0x99752753, 0x9813c5ca, 0x58cc4b0b,
    0xdbd97022, 0x1b06fee3, 0x1a601c7a, 0xdabf92bb, 0xef1948d6,
    0x2fc6c617, 0x2ea0248e, 0xee7faa4f, 0x6d6a9166, 0xadb51fa7,
    0xacd3fd3e, 0x6c0c73ff, 0xaaf88b6c, 0x6a2705ad, 0x6b41e734,
    0xab9e69f5, 0x288b52dc, 0xe854dc1d, 0xe9323e84, 0x29edb045,
    0x24ddbe78, 0xe40230b9, 0xe564d220, 0x25bb5ce1, 0xa6ae67c8,
    0x6671e909, 0x67170b90, 0xa7c88551, 0x613c7dc2, 0xa1e3f303,
    0xa085119a, 0x605a9f5b, 0xe34fa472, 0x23902ab3, 0x22f6c82a,
    0xe22946eb, 0x3896d450, 0xf8495a91, 0xf92fb808, 0x39f036c9,
    0xbae50de0, 0x7a3a8321, 0x7b5c61b8, 0xbb83ef79, 0x7d7717ea,
    0xbda8992b, 0xbcce7bb2, 0x7c11f573, 0xff04ce5a, 0x3fdb409b,
    0x3ebda202, 0xfe622cc3, 0xf35222fe, 0x338dac3f, 0x32eb4ea6,
    0xf234c067, 0x7121fb4e, 0xb1fe758f, 0xb0989716, 0x704719d7,
    0xb6b3e144, 0x766c6f85, 0x770a8d1c, 0xb7d503dd, 0x34c038f4,
    0xf41fb635, 0xf57954ac, 0x35a6da6d, 0x9f35e177, 0x5fea6fb6,
    0x5e8c8d2f, 0x9e5303ee, 0x1d4638c7, 0xdd99b606, 0xdcff549f,
    0x1c20da5e, 0xdad422cd, 0x1a0bac0c, 0x1b6d4e95, 0xdbb2c054,
    0x58a7fb7d, 0x987875bc, 0x991e9725, 0x59c119e4, 0x54f117d9,
    0x942e9918, 0x95487b81, 0x5597f540, 0xd682ce69, 0x165d40a8,
    0x173ba231, 0xd7e42cf0, 0x1110d463, 0xd1cf5aa2, 0xd0a9b83b,
    0x107636fa, 0x93630dd3, 0x53bc8312, 0x52da618b, 0x9205ef4a,
    0x48ba7df1, 0x8865f330, 0x890311a9, 0x49dc9f68, 0xcac9a441,
    0x0a162a80, 0x0b70c819, 0xcbaf46d8, 0x0d5bbe4b, 0xcd84308a,
    0xcce2d213, 0x0c3d5cd2, 0x8f2867fb, 0x4ff7e93a, 0x4e910ba3,
    0x8e4e8562, 0x837e8b5f, 0x43a1059e, 0x42c7e707, 0x821869c6,
    0x010d52ef, 0xc1d2dc2e, 0xc0b43eb7, 0x006bb076, 0xc69f48e5,
    0x0640c624, 0x072624bd, 0xc7f9aa7c, 0x44ec9155, 0x84331f94,
    0x8555fd0d, 0x458a73cc, 0x702ca9a1, 0xb0f32760, 0xb195c5f9,
    0x714a4b38, 0xf25f7011, 0x3280fed0, 0x33e61c49, 0xf3399288,
    0x35cd6a1b, 0xf512e4da, 0xf4740643, 0x34ab8882, 0xb7beb3ab,
    0x77613d6a, 0x7607dff3, 0xb6d85132, 0xbbe85f0f, 0x7b37d1ce,
    0x7a513357, 0xba8ebd96, 0x399b86bf, 0xf944087e, 0xf822eae7,
    0x38fd6426, 0xfe099cb5, 0x3ed61274, 0x3fb0f0ed, 0xff6f7e2c,
    0x7c7a4505, 0xbca5cbc4, 0xbdc3295d, 0x7d1ca79c, 0xa7a33527,
    0x677cbbe6, 0x661a597f, 0xa6c5d7be, 0x25d0ec97, 0xe50f6256,
    0xe46980cf, 0x24b60e0e, 0xe242f69d, 0x229d785c, 0x23fb9ac5,
    0xe3241404, 0x60312f2d, 0xa0eea1ec, 0xa1884375, 0x6157cdb4,
    0x6c67c389, 0xacb84d48, 0xaddeafd1, 0x6d012110, 0xee141a39,
    0x2ecb94f8, 0x2fad7661, 0xef72f8a0, 0x29860033, 0xe9598ef2,
    0xe83f6c6b, 0x28e0e2aa, 0xabf5d983, 0x6b2a5742, 0x6a4cb5db,
    0xaa933b1a},
   {0x00000000, 0x6f4ca59b, 0x9f9e3bec, 0xf0d29e77, 0x7f3b0603,
    0x1077a398, 0xe0a53def, 0x8fe99874, 0xfe760c06, 0x913aa99d,
    0x61e837ea, 0x0ea49271, 0x814d0a05, 0xee01af9e, 0x1ed331e9,
    0x719f9472, 0xfced180c, 0x93a1bd97, 0x637323e0, 0x0c3f867b,
    0x83d61e0f, 0xec9abb94, 0x1c4825e3, 0x73048078, 0x029b140a,
    0x6dd7b191, 0x9d052fe6, 0xf2498a7d, 0x7da01209, 0x12ecb792,
    0xe23e29e5, 0x8d728c7e, 0xf8db3118, 0x97979483, 0x67450af4,
    0x0809af6f, 0x87e0371b, 0xe8ac9280, 0x187e0cf7, 0x7732a96c,
    0x06ad3d1e, 0x69e19885, 0x993306f2, 0xf67fa369, 0x79963b1d,
    0x16da9e86, 0xe60800f1, 0x8944a56a, 0x04362914, 0x6b7a8c8f,
    0x9ba812f8, 0xf4e4b763, 0x7b0d2f17, 0x14418a8c, 0xe49314fb,
    0x8bdfb160, 0xfa402512, 0x950c8089, 0x65de1efe, 0x0a92bb65,
    0x857b2311, 0xea37868a, 0x1ae518fd, 0x75a9bd66, 0xf0b76330,
    0x9ffbc6ab, 0x6f2958dc, 0x0065fd47, 0x8f8c6533, 0xe0c0c0a8,
    0x10125edf, 0x7f5efb44, 0x0ec16f36, 0x618dcaad, 0x915f54da,
    0xfe13f141, 0x71fa6935, 0x1eb6ccae, 0xee6452d9, 0x8128f742,
    0x0c5a7b3c, 0x6316dea7, 0x93c440d0, 0xfc88e54b, 0x73617d3f,
    0x1c2dd8a4, 0xecff46d3, 0x83b3e348, 0xf22c773a, 0x9d60d2a1,
    0x6db24cd6, 0x02fee94d, 0x8d177139, 0xe25bd4a2, 0x12894ad5,
    0x7dc5ef4e, 0x086c5228, 0x6720f7b3, 0x97f269c4, 0xf8becc5f,
    0x7757542b, 0x181bf1b0, 0xe8c96fc7, 0x8785ca5c, 0xf61a5e2e,
    0x9956fbb5, 0x698465c2, 0x06c8c059, 0x8921582d, 0xe66dfdb6,
    0x16bf63c1, 0x79f3c65a, 0xf4814a24, 0x9bcdefbf, 0x6b1f71c8,
    0x0453d453, 0x8bba4c27, 0xe4f6e9bc, 0x142477cb, 0x7b68d250,
    0x0af74622, 0x65bbe3b9, 0x95697dce, 0xfa25d855, 0x75cc4021,
    0x1a80e5ba, 0xea527bcd, 0x851ede56, 0xe06fc760, 0x8f2362fb,
    0x7ff1fc8c, 0x10bd5917, 0x9f54c163, 0xf01864f8, 0x00cafa8f,
    0x6f865f14, 0x1e19cb66, 0x71556efd, 0x8187f08a, 0xeecb5511,
    0x6122cd65, 0x0e6e68fe, 0xfebcf689, 0x91f05312, 0x1c82df6c,
    0x73ce7af7, 0x831ce480, 0xec50411b, 0x63b9d96f, 0x0cf57cf4,
    0xfc27e283, 0x936b4718, 0xe2f4d36a, 0x8db876f1, 0x7d6ae886,
    0x12264d1d, 0x9dcfd569, 0xf28370f2, 0x0251ee85, 0x6d1d4b1e,
    0x18b4f678, 0x77f853e3, 0x872acd94, 0xe866680f, 0x678ff07b,
    0x08c355e0, 0xf811cb97, 0x975d6e0c, 0xe6c2fa7e, 0x898e5fe5,
    0x795cc192, 0x16106409, 0x99f9fc7d, 0xf6b559e6, 0x0667c791,
    0x692b620a, 0xe459ee74, 0x8b154bef, 0x7bc7d598, 0x148b7003,
    0x9b62e877, 0xf42e4dec, 0x04fcd39b, 0x6bb07600, 0x1a2fe272,
    0x756347e9, 0x85b1d99e, 0xeafd7c05, 0x6514e471, 0x0a5841ea,
    0xfa8adf9d, 0x95c67a06, 0x10d8a450, 0x7f9401cb, 0x8f469fbc,
    0xe00a3a27, 0x6fe3a253, 0x00af07c8, 0xf07d99bf, 0x9f313c24,
    0xeeaea856, 0x81e20dcd, 0x713093ba, 0x1e7c3621, 0x9195ae55,
    0xfed90bce, 0x0e0b95b9, 0x61473022, 0xec35bc5c, 0x837919c7,
    0x73ab87b0, 0x1ce7222b, 0x930eba5f, 0xfc421fc4, 0x0c9081b3,
    0x63dc2428, 0x1243b05a, 0x7d0f15c1, 0x8ddd8bb6, 0xe2912e2d,
    0x6d78b659, 0x023413c2, 0xf2e68db5, 0x9daa282e, 0xe8039548,
    0x874f30d3, 0x779daea4, 0x18d10b3f, 0x9738934b, 0xf87436d0,
    0x08a6a8a7, 0x67ea0d3c, 0x1675994e, 0x79393cd5, 0x89eba2a2,
    0xe6a70739, 0x694e9f4d, 0x06023ad6, 0xf6d0a4a1, 0x999c013a,
    0x14ee8d44, 0x7ba228df, 0x8b70b6a8, 0xe43c1333, 0x6bd58b47,
    0x04992edc, 0xf44bb0ab, 0x9b071530, 0xea988142, 0x85d424d9,
    0x7506baae, 0x1a4a1f35, 0x95a38741, 0xfaef22da, 0x0a3dbcad,
    0x65711936}};

#endif

#endif

#if N == 4

#if W == 8

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xf1da05aa, 0x38c50d15, 0xc91f08bf, 0x718a1a2a,
    0x80501f80, 0x494f173f, 0xb8951295, 0xe3143454, 0x12ce31fe,
    0xdbd13941, 0x2a0b3ceb, 0x929e2e7e, 0x63442bd4, 0xaa5b236b,
    0x5b8126c1, 0x1d596ee9, 0xec836b43, 0x259c63fc, 0xd4466656,
    0x6cd374c3, 0x9d097169, 0x541679d6, 0xa5cc7c7c, 0xfe4d5abd,
    0x0f975f17, 0xc68857a8, 0x37525202, 0x8fc74097, 0x7e1d453d,
    0xb7024d82, 0x46d84828, 0x3ab2ddd2, 0xcb68d878, 0x0277d0c7,
    0xf3add56d, 0x4b38c7f8, 0xbae2c252, 0x73fdcaed, 0x8227cf47,
    0xd9a6e986, 0x287cec2c, 0xe163e493, 0x10b9e139, 0xa82cf3ac,
    0x59f6f606, 0x90e9feb9, 0x6133fb13, 0x27ebb33b, 0xd631b691,
    0x1f2ebe2e, 0xeef4bb84, 0x5661a911, 0xa7bbacbb, 0x6ea4a404,
    0x9f7ea1ae, 0xc4ff876f, 0x352582c5, 0xfc3a8a7a, 0x0de08fd0,
    0xb5759d45, 0x44af98ef, 0x8db09050, 0x7c6a95fa, 0x7565bba4,
    0x84bfbe0e, 0x4da0b6b1, 0xbc7ab31b, 0x04efa18e, 0xf535a424,
    0x3c2aac9b, 0xcdf0a931, 0x96718ff0, 0x67ab8a5a, 0xaeb482e5,
    0x5f6e874f, 0xe7fb95da, 0x16219070, 0xdf3e98cf, 0x2ee49d65,
    0x683cd54d, 0x99e6d0e7, 0x50f9d858, 0xa123ddf2, 0x19b6cf67,
    0xe86ccacd, 0x2173c272, 0xd0a9c7d8, 0x8b28e119, 0x7af2e4b3,
    0xb3edec0c, 0x4237e9a6, 0xfaa2fb33, 0x0b78fe99, 0xc267f626,
    0x33bdf38c, 0x4fd76676, 0xbe0d63dc, 0x77126b63, 0x86c86ec9,
    0x3e5d7c5c, 0xcf8779f6, 0x06987149, 0xf74274e3, 0xacc35222,
    0x5d195788, 0x94065f37, 0x65dc5a9d, 0xdd494808, 0x2c934da2,
    0xe58c451d, 0x145640b7, 0x528e089f, 0xa3540d35, 0x6a4b058a,
    0x9b910020, 0x230412b5, 0xd2de171f, 0x1bc11fa0, 0xea1b1a0a,
    0xb19a3ccb, 0x40403961, 0x895f31de, 0x78853474, 0xc01026e1,
    0x31ca234b, 0xf8d52bf4, 0x090f2e5e, 0xeacb7748, 0x1b1172e2,
    0xd20e7a5d, 0x23d47ff7, 0x9b416d62, 0x6a9b68c8, 0xa3846077,
    0x525e65dd, 0x09df431c, 0xf80546b6, 0x311a4e09, 0xc0c04ba3,
    0x78555936, 0x898f5c9c, 0x40905423, 0xb14a5189, 0xf79219a1,
    0x06481c0b, 0xcf5714b4, 0x3e8d111e, 0x8618038b, 0x77c20621,
    0xbedd0e9e, 0x4f070b34, 0x14862df5, 0xe55c285f, 0x2c4320e0,
    0xdd99254a, 0x650c37df, 0x94d63275, 0x5dc93aca, 0xac133f60,
    0xd079aa9a, 0x21a3af30, 0xe8bca78f, 0x1966a225, 0xa1f3b0b0,
    0x5029b51a, 0x9936bda5, 0x68ecb80f, 0x336d9ece, 0xc2b79b64,
    0x0ba893db, 0xfa729671, 0x42e784e4, 0xb33d814e, 0x7a2289f1,
    0x8bf88c5b, 0xcd20c473, 0x3cfac1d9, 0xf5e5c966, 0x043fcccc,
    0xbcaade59, 0x4d70dbf3, 0x846fd34c, 0x75b5d6e6, 0x2e34f027,
    0xdfeef58d, 0x16f1fd32, 0xe72bf898, 0x5fbeea0d, 0xae64efa7,
    0x677be718, 0x96a1e2b2, 0x9faeccec, 0x6e74c946, 0xa76bc1f9,
    0x56b1c453, 0xee24d6c6, 0x1ffed36c, 0xd6e1dbd3, 0x273bde79,
    0x7cbaf8b8, 0x8d60fd12, 0x447ff5ad, 0xb5a5f007, 0x0d30e292,
    0xfceae738, 0x35f5ef87, 0xc42fea2d, 0x82f7a205, 0x732da7af,
    0xba32af10, 0x4be8aaba, 0xf37db82f, 0x02a7bd85, 0xcbb8b53a,
    0x3a62b090, 0x61e39651, 0x903993fb, 0x59269b44, 0xa8fc9eee,
    0x10698c7b, 0xe1b389d1, 0x28ac816e, 0xd97684c4, 0xa51c113e,
    0x54c61494, 0x9dd91c2b, 0x6c031981, 0xd4960b14, 0x254c0ebe,
    0xec530601, 0x1d8903ab, 0x4608256a, 0xb7d220c0, 0x7ecd287f,
    0x8f172dd5, 0x37823f40, 0xc6583aea, 0x0f473255, 0xfe9d37ff,
    0xb8457fd7, 0x499f7a7d, 0x808072c2, 0x715a7768, 0xc9cf65fd,
    0x38156057, 0xf10a68e8, 0x00d06d42, 0x5b514b83, 0xaa8b4e29,
    0x63944696, 0x924e433c, 0x2adb51a9, 0xdb015403, 0x121e5cbc,
    0xe3c45916},
   {0x00000000, 0x0ee7e8d1, 0x1dcfd1a2, 0x13283973, 0x3b9fa344,
    0x35784b95, 0x265072e6, 0x28b79a37, 0x773f4688, 0x79d8ae59,
    0x6af0972a, 0x64177ffb, 0x4ca0e5cc, 0x42470d1d, 0x516f346e,
    0x5f88dcbf, 0xee7e8d10, 0xe09965c1, 0xf3b15cb2, 0xfd56b463,
    0xd5e12e54, 0xdb06c685, 0xc82efff6, 0xc6c91727, 0x9941cb98,
    0x97a62349, 0x848e1a3a, 0x8a69f2eb, 0xa2de68dc, 0xac39800d,
    0xbf11b97e, 0xb1f651af, 0x078c1c61, 0x096bf4b0, 0x1a43cdc3,
    0x14a42512, 0x3c13bf25, 0x32f457f4, 0x21dc6e87, 0x2f3b8656,
    0x70b35ae9, 0x7e54b238, 0x6d7c8b4b, 0x639b639a, 0x4b2cf9ad,
    0x45cb117c, 0x56e3280f, 0x5804c0de, 0xe9f29171, 0xe71579a0,
    0xf43d40d3, 0xfadaa802, 0xd26d3235, 0xdc8adae4, 0xcfa2e397,
    0xc1450b46, 0x9ecdd7f9, 0x902a3f28, 0x8302065b, 0x8de5ee8a,
    0xa55274bd, 0xabb59c6c, 0xb89da51f, 0xb67a4dce, 0x0f1838c2,
    0x01ffd013, 0x12d7e960, 0x1c3001b1, 0x34879b86, 0x3a607357,
    0x29484a24, 0x27afa2f5, 0x78277e4a, 0x76c0969b, 0x65e8afe8,
    0x6b0f4739, 0x43b8dd0e, 0x4d5f35df, 0x5e770cac, 0x5090e47d,
    0xe166b5d2, 0xef815d03, 0xfca96470, 0xf24e8ca1, 0xdaf91696,
    0xd41efe47, 0xc736c734, 0xc9d12fe5, 0x9659f35a, 0x98be1b8b,
    0x8b9622f8, 0x8571ca29, 0xadc6501e, 0xa321b8cf, 0xb00981bc,
    0xbeee696d, 0x089424a3, 0x0673cc72, 0x155bf501, 0x1bbc1dd0,
    0x330b87e7, 0x3dec6f36, 0x2ec45645, 0x2023be94, 0x7fab622b,
    0x714c8afa, 0x6264b389, 0x6c835b58, 0x4434c16f, 0x4ad329be,
    0x59fb10cd, 0x571cf81c, 0xe6eaa9b3, 0xe80d4162, 0xfb257811,
    0xf5c290c0, 0xdd750af7, 0xd392e226, 0xc0badb55, 0xce5d3384,
    0x91d5ef3b, 0x9f3207ea, 0x8c1a3e99, 0x82fdd648, 0xaa4a4c7f,
    0xa4ada4ae, 0xb7859ddd, 0xb962750c, 0x1e307184, 0x10d79955,
    0x03ffa026, 0x0d1848f7, 0x25afd2c0, 0x2b483a11, 0x38600362,
    0x3687ebb3, 0x690f370c, 0x67e8dfdd, 0x74c0e6ae, 0x7a270e7f,
    0x52909448, 0x5c777c99, 0x4f5f45ea, 0x41b8ad3b, 0xf04efc94,
    0xfea91445, 0xed812d36, 0xe366c5e7, 0xcbd15fd0, 0xc536b701,
    0xd61e8e72, 0xd8f966a3, 0x8771ba1c, 0x899652cd, 0x9abe6bbe,
    0x9459836f, 0xbcee1958, 0xb209f189, 0xa121c8fa, 0xafc6202b,
    0x19bc6de5, 0x175b8534, 0x0473bc47, 0x0a945496, 0x2223cea1,
    0x2cc42670, 0x3fec1f03, 0x310bf7d2, 0x6e832b6d, 0x6064c3bc,
    0x734cfacf, 0x7dab121e, 0x551c8829, 0x5bfb60f8, 0x48d3598b,
    0x4634b15a, 0xf7c2e0f5, 0xf9250824, 0xea0d3157, 0xe4ead986,
    0xcc5d43b1, 0xc2baab60, 0xd1929213, 0xdf757ac2, 0x80fda67d,
    0x8e1a4eac, 0x9d3277df, 0x93d59f0e, 0xbb620539, 0xb585ede8,
    0xa6add49b, 0xa84a3c4a, 0x11284946, 0x1fcfa197, 0x0ce798e4,
    0x02007035, 0x2ab7ea02, 0x245002d3, 0x37783ba0, 0x399fd371,
    0x66170fce, 0x68f0e71f, 0x7bd8de6c, 0x753f36bd, 0x5d88ac8a,
    0x536f445b, 0x40477d28, 0x4ea095f9, 0xff56c456, 0xf1b12c87,
    0xe29915f4, 0xec7efd25, 0xc4c96712, 0xca2e8fc3, 0xd906b6b0,
    0xd7e15e61, 0x886982de, 0x868e6a0f, 0x95a6537c, 0x9b41bbad,
    0xb3f6219a, 0xbd11c94b, 0xae39f038, 0xa0de18e9, 0x16a45527,
    0x1843bdf6, 0x0b6b8485, 0x058c6c54, 0x2d3bf663, 0x23dc1eb2,
    0x30f427c1, 0x3e13cf10, 0x619b13af, 0x6f7cfb7e, 0x7c54c20d,
    0x72b32adc, 0x5a04b0eb, 0x54e3583a, 0x47cb6149, 0x492c8998,
    0xf8dad837, 0xf63d30e6, 0xe5150995, 0xebf2e144, 0xc3457b73,
    0xcda293a2, 0xde8aaad1, 0xd06d4200, 0x8fe59ebf, 0x8102766e,
    0x922a4f1d, 0x9ccda7cc, 0xb47a3dfb, 0xba9dd52a, 0xa9b5ec59,
    0xa7520488},
   {0x00000000, 0x3c60e308, 0x78c1c610, 0x44a12518, 0xf1838c20,
    0xcde36f28, 0x89424a30, 0xb522a938, 0x38761e01, 0x0416fd09,
    0x40b7d811, 0x7cd73b19, 0xc9f59221, 0xf5957129, 0xb1345431,
    0x8d54b739, 0x70ec3c02, 0x4c8cdf0a, 0x082dfa12, 0x344d191a,
    0x816fb022, 0xbd0f532a, 0xf9ae7632, 0xc5ce953a, 0x489a2203,
    0x74fac10b, 0x305be413, 0x0c3b071b, 0xb919ae23, 0x85794d2b,
    0xc1d86833, 0xfdb88b3b, 0xe1d87804, 0xddb89b0c, 0x9919be14,
    0xa5795d1c, 0x105bf424, 0x2c3b172c, 0x689a3234, 0x54fad13c,
    0xd9ae6605, 0xe5ce850d, 0xa16fa015, 0x9d0f431d, 0x282dea25,
    0x144d092d, 0x50ec2c35, 0x6c8ccf3d, 0x91344406, 0xad54a70e,
    0xe9f58216, 0xd595611e, 0x60b7c826, 0x5cd72b2e, 0x18760e36,
    0x2416ed3e, 0xa9425a07, 0x9522b90f, 0xd1839c17, 0xede37f1f,
    0x58c1d627, 0x64a1352f, 0x20001037, 0x1c60f33f, 0x18c1f649,
    0x24a11541, 0x60003059, 0x5c60d351, 0xe9427a69, 0xd5229961,
    0x9183bc79, 0xade35f71, 0x20b7e848, 0x1cd70b40, 0x58762e58,
    0x6416cd50, 0xd1346468, 0xed548760, 0xa9f5a278, 0x95954170,
    0x682dca4b, 0x544d2943, 0x10ec0c5b, 0x2c8cef53, 0x99ae466b,
    0xa5cea563, 0xe16f807b, 0xdd0f6373, 0x505bd44a, 0x6c3b3742,
    0x289a125a, 0x14faf152, 0xa1d8586a, 0x9db8bb62, 0xd9199e7a,
    0xe5797d72, 0xf9198e4d, 0xc5796d45, 0x81d8485d, 0xbdb8ab55,
    0x089a026d, 0x34fae165, 0x705bc47d, 0x4c3b2775, 0xc16f904c,
    0xfd0f7344, 0xb9ae565c, 0x85ceb554, 0x30ec1c6c, 0x0c8cff64,
    0x482dda7c, 0x744d3974, 0x89f5b24f, 0xb5955147, 0xf134745f,
    0xcd549757, 0x78763e6f, 0x4416dd67, 0x00b7f87f, 0x3cd71b77,
    0xb183ac4e, 0x8de34f46, 0xc9426a5e, 0xf5228956, 0x4000206e,
    0x7c60c366, 0x38c1e67e, 0x04a10576, 0x3183ec92, 0x0de30f9a,
    0x49422a82, 0x7522c98a, 0xc00060b2, 0xfc6083ba, 0xb8c1a6a2,
    0x84a145aa, 0x09f5f293, 0x3595119b, 0x71343483, 0x4d54d78b,
    0xf8767eb3, 0xc4169dbb, 0x80b7b8a3, 0xbcd75bab, 0x416fd090,
    0x7d0f3398, 0x39ae1680, 0x05cef588, 0xb0ec5cb0, 0x8c8cbfb8,
    0xc82d9aa0, 0xf44d79a8, 0x7919ce91, 0x45792d99, 0x01d80881,
    0x3db8eb89, 0x889a42b1, 0xb4faa1b9, 0xf05b84a1, 0xcc3b67a9,
    0xd05b9496, 0xec3b779e, 0xa89a5286, 0x94fab18e, 0x21d818b6,
    0x1db8fbbe, 0x5919dea6, 0x65793dae, 0xe82d8a97, 0xd44d699f,
    0x90ec4c87, 0xac8caf8f, 0x19ae06b7, 0x25cee5bf, 0x616fc0a7,
    0x5d0f23af, 0xa0b7a894, 0x9cd74b9c, 0xd8766e84, 0xe4168d8c,
    0x513424b4, 0x6d54c7bc, 0x29f5e2a4, 0x159501ac, 0x98c1b695,
    0xa4a1559d, 0xe0007085, 0xdc60938d, 0x69423ab5, 0x5522d9bd,
    0x1183fca5, 0x2de31fad, 0x29421adb, 0x1522f9d3, 0x5183dccb,
    0x6de33fc3, 0xd8c196fb, 0xe4a175f3, 0xa00050eb, 0x9c60b3e3,
    0x113404da, 0x2d54e7d2, 0x69f5c2ca, 0x559521c2, 0xe0b788fa,
    0xdcd76bf2, 0x98764eea, 0xa416ade2, 0x59ae26d9, 0x65cec5d1,
    0x216fe0c9, 0x1d0f03c1, 0xa82daaf9, 0x944d49f1, 0xd0ec6ce9,
    0xec8c8fe1, 0x61d838d8, 0x5db8dbd0, 0x1919fec8, 0x25791dc0,
    0x905bb4f8, 0xac3b57f0, 0xe89a72e8, 0xd4fa91e0, 0xc89a62df,
    0xf4fa81d7, 0xb05ba4cf, 0x8c3b47c7, 0x3919eeff, 0x05790df7,
    0x41d828ef, 0x7db8cbe7, 0xf0ec7cde, 0xcc8c9fd6, 0x882dbace,
    0xb44d59c6, 0x016ff0fe, 0x3d0f13f6, 0x79ae36ee, 0x45ced5e6,
    0xb8765edd, 0x8416bdd5, 0xc0b798cd, 0xfcd77bc5, 0x49f5d2fd,
    0x759531f5, 0x313414ed, 0x0d54f7e5, 0x800040dc, 0xbc60a3d4,
    0xf8c186cc, 0xc4a165c4, 0x7183ccfc, 0x4de32ff4, 0x09420aec,
    0x3522e9e4},
   {0x00000000, 0x6307d924, 0xc60fb248, 0xa5086b6c, 0x576e62d1,
    0x3469bbf5, 0x9161d099, 0xf26609bd, 0xaedcc5a2, 0xcddb1c86,
    0x68d377ea, 0x0bd4aece, 0xf9b2a773, 0x9ab57e57, 0x3fbd153b,
    0x5cbacc1f, 0x86c88d05, 0xe5cf5421, 0x40c73f4d, 0x23c0e669,
    0xd1a6efd4, 0xb2a136f0, 0x17a95d9c, 0x74ae84b8, 0x281448a7,
    0x4b139183, 0xee1bfaef, 0x8d1c23cb, 0x7f7a2a76, 0x1c7df352,
    0xb975983e, 0xda72411a, 0xd6e01c4b, 0xb5e7c56f, 0x10efae03,
    0x73e87727, 0x818e7e9a, 0xe289a7be, 0x4781ccd2, 0x248615f6,
    0x783cd9e9, 0x1b3b00cd, 0xbe336ba1, 0xdd34b285, 0x2f52bb38,
    0x4c55621c, 0xe95d0970, 0x8a5ad054, 0x5028914e, 0x332f486a,
    0x96272306, 0xf520fa22, 0x0746f39f, 0x64412abb, 0xc14941d7,
    0xa24e98f3, 0xfef454ec, 0x9df38dc8, 0x38fbe6a4, 0x5bfc3f80,
    0xa99a363d, 0xca9def19, 0x6f958475, 0x0c925d51, 0x76b13ed7,
    0x15b6e7f3, 0xb0be8c9f, 0xd3b955bb, 0x21df5c06, 0x42d88522,
    0xe7d0ee4e, 0x84d7376a, 0xd86dfb75, 0xbb6a2251, 0x1e62493d,
    0x7d659019, 0x8f0399a4, 0xec044080, 0x490c2bec, 0x2a0bf2c8,
    0xf079b3d2, 0x937e6af6, 0x3676019a, 0x5571d8be, 0xa717d103,
    0xc4100827, 0x6118634b, 0x021fba6f, 0x5ea57670, 0x3da2af54,
    0x98aac438, 0xfbad1d1c, 0x09cb14a1, 0x6acccd85, 0xcfc4a6e9,
    0xacc37fcd, 0xa051229c, 0xc356fbb8, 0x665e90d4, 0x055949f0,
    0xf73f404d, 0x94389969, 0x3130f205, 0x52372b21, 0x0e8de73e,
    0x6d8a3e1a, 0xc8825576, 0xab858c52, 0x59e385ef, 0x3ae45ccb,
    0x9fec37a7, 0xfcebee83, 0x2699af99, 0x459e76bd, 0xe0961dd1,
    0x8391c4f5, 0x71f7cd48, 0x12f0146c, 0xb7f87f00, 0xd4ffa624,
    0x88456a3b, 0xeb42b31f, 0x4e4ad873, 0x2d4d0157, 0xdf2b08ea,
    0xbc2cd1ce, 0x1924baa2, 0x7a236386, 0xed627dae, 0x8e65a48a,
    0x2b6dcfe6, 0x486a16c2, 0xba0c1f7f, 0xd90bc65b, 0x7c03ad37,
    0x1f047413, 0x43beb80c, 0x20b96128, 0x85b10a44, 0xe6b6d360,
    0x14d0dadd, 0x77d703f9, 0xd2df6895, 0xb1d8b1b1, 0x6baaf0ab,
    0x08ad298f, 0xada542e3, 0xcea29bc7, 0x3cc4927a, 0x5fc34b5e,
    0xfacb2032, 0x99ccf916, 0xc5763509, 0xa671ec2d, 0x03798741,
    0x607e5e65, 0x921857d8, 0xf11f8efc, 0x5417e590, 0x37103cb4,
    0x3b8261e5, 0x5885b8c1, 0xfd8dd3ad, 0x9e8a0a89, 0x6cec0334,
    0x0febda10, 0xaae3b17c, 0xc9e46858, 0x955ea447, 0xf6597d63,
    0x5351160f, 0x3056cf2b, 0xc230c696, 0xa1371fb2, 0x043f74de,
    0x6738adfa, 0xbd4aece0, 0xde4d35c4, 0x7b455ea8, 0x1842878c,
    0xea248e31, 0x89235715, 0x2c2b3c79, 0x4f2ce55d, 0x13962942,
    0x7091f066, 0xd5999b0a, 0xb69e422e, 0x44f84b93, 0x27ff92b7,
    0x82f7f9db, 0xe1f020ff, 0x9bd34379, 0xf8d49a5d, 0x5ddcf131,
    0x3edb2815, 0xccbd21a8, 0xafbaf88c, 0x0ab293e0, 0x69b54ac4,
    0x350f86db, 0x56085fff, 0xf3003493, 0x9007edb7, 0x6261e40a,
    0x01663d2e, 0xa46e5642, 0xc7698f66, 0x1d1bce7c, 0x7e1c1758,
    0xdb147c34, 0xb813a510, 0x4a75acad, 0x29727589, 0x8c7a1ee5,
    0xef7dc7c1, 0xb3c70bde, 0xd0c0d2fa, 0x75c8b996, 0x16cf60b2,
    0xe4a9690f, 0x87aeb02b, 0x22a6db47, 0x41a10263, 0x4d335f32,
    0x2e348616, 0x8b3ced7a, 0xe83b345e, 0x1a5d3de3, 0x795ae4c7,
    0xdc528fab, 0xbf55568f, 0xe3ef9a90, 0x80e843b4, 0x25e028d8,
    0x46e7f1fc, 0xb481f841, 0xd7862165, 0x728e4a09, 0x1189932d,
    0xcbfbd237, 0xa8fc0b13, 0x0df4607f, 0x6ef3b95b, 0x9c95b0e6,
    0xff9269c2, 0x5a9a02ae, 0x399ddb8a, 0x65271795, 0x0620ceb1,
    0xa328a5dd, 0xc02f7cf9, 0x32497544, 0x514eac60, 0xf446c70c,
    0x97411e28},
   {0x00000000, 0x01b5fd1d, 0x036bfa3a, 0x02de0727, 0x06d7f474,
    0x07620969, 0x05bc0e4e, 0x0409f353, 0x0dafe8e8, 0x0c1a15f5,
    0x0ec412d2, 0x0f71efcf, 0x0b781c9c, 0x0acde181, 0x0813e6a6,
    0x09a61bbb, 0x1b5fd1d0, 0x1aea2ccd, 0x18342bea, 0x1981d6f7,
    0x1d8825a4, 0x1c3dd8b9, 0x1ee3df9e, 0x1f562283, 0x16f03938,
    0x1745c425, 0x159bc302, 0x142e3e1f, 0x1027cd4c, 0x11923051,
    0x134c3776, 0x12f9ca6b, 0x36bfa3a0, 0x370a5ebd, 0x35d4599a,
    0x3461a487, 0x306857d4, 0x31ddaac9, 0x3303adee, 0x32b650f3,
    0x3b104b48, 0x3aa5b655, 0x387bb172, 0x39ce4c6f, 0x3dc7bf3c,
    0x3c724221, 0x3eac4506, 0x3f19b81b, 0x2de07270, 0x2c558f6d,
    0x2e8b884a, 0x2f3e7557, 0x2b378604, 0x2a827b19, 0x285c7c3e,
    0x29e98123, 0x204f9a98, 0x21fa6785, 0x232460a2, 0x22919dbf,
    0x26986eec, 0x272d93f1, 0x25f394d6, 0x244669cb, 0x6d7f4740,
    0x6ccaba5d, 0x6e14bd7a, 0x6fa14067, 0x6ba8b334, 0x6a1d4e29,
    0x68c3490e, 0x6976b413, 0x60d0afa8, 0x616552b5, 0x63bb5592,
    0x620ea88f, 0x66075bdc, 0x67b2a6c1, 0x656ca1e6, 0x64d95cfb,
    0x76209690, 0x77956b8d, 0x754b6caa, 0x74fe91b7, 0x70f762e4,
    0x71429ff9, 0x739c98de, 0x722965c3, 0x7b8f7e78, 0x7a3a8365,
    0x78e48442, 0x7951795f, 0x7d588a0c, 0x7ced7711, 0x7e337036,
    0x7f868d2b, 0x5bc0e4e0, 0x5a7519fd, 0x58ab1eda, 0x591ee3c7,
    0x5d171094, 0x5ca2ed89, 0x5e7ceaae, 0x5fc917b3, 0x566f0c08,
    0x57daf115, 0x5504f632, 0x54b10b2f, 0x50b8f87c, 0x510d0561,
    0x53d30246, 0x5266ff5b, 0x409f3530, 0x412ac82d, 0x43f4cf0a,
    0x42413217, 0x4648c144, 0x47fd3c59, 0x45233b7e, 0x4496c663,
    0x4d30ddd8, 0x4c8520c5, 0x4e5b27e2, 0x4feedaff, 0x4be729ac,
    0x4a52d4b1, 0x488cd396, 0x49392e8b, 0xdafe8e80, 0xdb4b739d,
    0xd99574ba, 0xd82089a7, 0xdc297af4, 0xdd9c87e9, 0xdf4280ce,
    0xdef77dd3, 0xd7516668, 0xd6e49b75, 0xd43a9c52, 0xd58f614f,
    0xd186921c, 0xd0336f01, 0xd2ed6826, 0xd358953b, 0xc1a15f50,
    0xc014a24d, 0xc2caa56a, 0xc37f5877, 0xc776ab24, 0xc6c35639,
    0xc41d511e, 0xc5a8ac03, 0xcc0eb7b8, 0xcdbb4aa5, 0xcf654d82,
    0xced0b09f, 0xcad943cc, 0xcb6cbed1, 0xc9b2b9f6, 0xc80744eb,
    0xec412d20, 0xedf4d03d, 0xef2ad71a, 0xee9f2a07, 0xea96d954,
    0xeb232449, 0xe9fd236e, 0xe848de73, 0xe1eec5c8, 0xe05b38d5,
    0xe2853ff2, 0xe330c2ef, 0xe73931bc, 0xe68ccca1, 0xe452cb86,
    0xe5e7369b, 0xf71efcf0, 0xf6ab01ed, 0xf47506ca, 0xf5c0fbd7,
    0xf1c90884, 0xf07cf599, 0xf2a2f2be, 0xf3170fa3, 0xfab11418,
    0xfb04e905, 0xf9daee22, 0xf86f133f, 0xfc66e06c, 0xfdd31d71,
    0xff0d1a56, 0xfeb8e74b, 0xb781c9c0, 0xb63434dd, 0xb4ea33fa,
    0xb55fcee7, 0xb1563db4, 0xb0e3c0a9, 0xb23dc78e, 0xb3883a93,
    0xba2e2128, 0xbb9bdc35, 0xb945db12, 0xb8f0260f, 0xbcf9d55c,
    0xbd4c2841, 0xbf922f66, 0xbe27d27b, 0xacde1810, 0xad6be50d,
    0xafb5e22a, 0xae001f37, 0xaa09ec64, 0xabbc1179, 0xa962165e,
    0xa8d7eb43, 0xa171f0f8, 0xa0c40de5, 0xa21a0ac2, 0xa3aff7df,
    0xa7a6048c, 0xa613f991, 0xa4cdfeb6, 0xa57803ab, 0x813e6a60,
    0x808b977d, 0x8255905a, 0x83e06d47, 0x87e99e14, 0x865c6309,
    0x8482642e, 0x85379933, 0x8c918288, 0x8d247f95, 0x8ffa78b2,
    0x8e4f85af, 0x8a4676fc, 0x8bf38be1, 0x892d8cc6, 0x889871db,
    0x9a61bbb0, 0x9bd446ad, 0x990a418a, 0x98bfbc97, 0x9cb64fc4,
    0x9d03b2d9, 0x9fddb5fe, 0x9e6848e3, 0x97ce5358, 0x967bae45,
    0x94a5a962, 0x9510547f, 0x9119a72c, 0x90ac5a31, 0x92725d16,
    0x93c7a00b},
   {0x00000000, 0x6e8c1b41, 0xdd183682, 0xb3942dc3, 0x61416b45,
    0x0fcd7004, 0xbc595dc7, 0xd2d54686, 0xc282d68a, 0xac0ecdcb,
    0x1f9ae008, 0x7116fb49, 0xa3c3bdcf, 0xcd4fa68e, 0x7edb8b4d,
    0x1057900c, 0x5e74ab55, 0x30f8b014, 0x836c9dd7, 0xede08696,
    0x3f35c010, 0x51b9db51, 0xe22df692, 0x8ca1edd3, 0x9cf67ddf,
    0xf27a669e, 0x41ee4b5d, 0x2f62501c, 0xfdb7169a, 0x933b0ddb,
    0x20af2018, 0x4e233b59, 0xbce956aa, 0xd2654deb, 0x61f16028,
    0x0f7d7b69, 0xdda83def, 0xb32426ae, 0x00b00b6d, 0x6e3c102c,
    0x7e6b8020, 0x10e79b61, 0xa373b6a2, 0xcdffade3, 0x1f2aeb65,
    0x71a6f024, 0xc232dde7, 0xacbec6a6, 0xe29dfdff, 0x8c11e6be,
    0x3f85cb7d, 0x5109d03c, 0x83dc96ba, 0xed508dfb, 0x5ec4a038,
    0x3048bb79, 0x201f2b75, 0x4e933034, 0xfd071df7, 0x938b06b6,
    0x415e4030, 0x2fd25b71, 0x9c4676b2, 0xf2ca6df3, 0xa2a3ab15,
    0xcc2fb054, 0x7fbb9d97, 0x113786d6, 0xc3e2c050, 0xad6edb11,
    0x1efaf6d2, 0x7076ed93, 0x60217d9f, 0x0ead66de, 0xbd394b1d,
    0xd3b5505c, 0x016016da, 0x6fec0d9b, 0xdc782058, 0xb2f43b19,
    0xfcd70040, 0x925b1b01, 0x21cf36c2, 0x4f432d83, 0x9d966b05,
    0xf31a7044, 0x408e5d87, 0x2e0246c6, 0x3e55d6ca, 0x50d9cd8b,
    0xe34de048, 0x8dc1fb09, 0x5f14bd8f, 0x3198a6ce, 0x820c8b0d,
    0xec80904c, 0x1e4afdbf, 0x70c6e6fe, 0xc352cb3d, 0xadded07c,
    0x7f0b96fa, 0x11878dbb, 0xa213a078, 0xcc9fbb39, 0xdcc82b35,
    0xb2443074, 0x01d01db7, 0x6f5c06f6, 0xbd894070, 0xd3055b31,
    0x609176f2, 0x0e1d6db3, 0x403e56ea, 0x2eb24dab, 0x9d266068,
    0xf3aa7b29, 0x217f3daf, 0x4ff326ee, 0xfc670b2d, 0x92eb106c,
    0x82bc8060, 0xec309b21, 0x5fa4b6e2, 0x3128ada3, 0xe3fdeb25,
    0x8d71f064, 0x3ee5dda7, 0x5069c6e6, 0x9e36506b, 0xf0ba4b2a,
    0x432e66e9, 0x2da27da8, 0xff773b2e, 0x91fb206f, 0x226f0dac,
    0x4ce316ed, 0x5cb486e1, 0x32389da0, 0x81acb063, 0xef20ab22,
    0x3df5eda4, 0x5379f6e5, 0xe0eddb26, 0x8e61c067, 0xc042fb3e,
    0xaecee07f, 0x1d5acdbc, 0x73d6d6fd, 0xa103907b, 0xcf8f8b3a,
    0x7c1ba6f9, 0x1297bdb8, 0x02c02db4, 0x6c4c36f5, 0xdfd81b36,
    0xb1540077, 0x638146f1, 0x0d0d5db0, 0xbe997073, 0xd0156b32,
    0x22df06c1, 0x4c531d80, 0xffc73043, 0x914b2b02, 0x439e6d84,
    0x2d1276c5, 0x9e865b06, 0xf00a4047, 0xe05dd04b, 0x8ed1cb0a,
    0x3d45e6c9, 0x53c9fd88, 0x811cbb0e, 0xef90a04f, 0x5c048d8c,
    0x328896cd, 0x7cabad94, 0x1227b6d5, 0xa1b39b16, 0xcf3f8057,
    0x1deac6d1, 0x7366dd90, 0xc0f2f053, 0xae7eeb12, 0xbe297b1e,
    0xd0a5605f, 0x63314d9c, 0x0dbd56dd, 0xdf68105b, 0xb1e40b1a,
    0x027026d9, 0x6cfc3d98, 0x3c95fb7e, 0x5219e03f, 0xe18dcdfc,
    0x8f01d6bd, 0x5dd4903b, 0x33588b7a, 0x80cca6b9, 0xee40bdf8,
    0xfe172df4, 0x909b36b5, 0x230f1b76, 0x4d830037, 0x9f5646b1,
    0xf1da5df0, 0x424e7033, 0x2cc26b72, 0x62e1502b, 0x0c6d4b6a,
    0xbff966a9, 0xd1757de8, 0x03a03b6e, 0x6d2c202f, 0xdeb80dec,
    0xb03416ad, 0xa06386a1, 0xceef9de0, 0x7d7bb023, 0x13f7ab62,
    0xc122ede4, 0xafaef6a5, 0x1c3adb66, 0x72b6c027, 0x807cadd4,
    0xeef0b695, 0x5d649b56, 0x33e88017, 0xe13dc691, 0x8fb1ddd0,
    0x3c25f013, 0x52a9eb52, 0x42fe7b5e, 0x2c72601f, 0x9fe64ddc,
    0xf16a569d, 0x23bf101b, 0x4d330b5a, 0xfea72699, 0x902b3dd8,
    0xde080681, 0xb0841dc0, 0x03103003, 0x6d9c2b42, 0xbf496dc4,
    0xd1c57685, 0x62515b46, 0x0cdd4007, 0x1c8ad00b, 0x7206cb4a,
    0xc192e689, 0xaf1efdc8, 0x7dcbbb4e, 0x1347a00f, 0xa0d38dcc,
    0xce5f968d},
   {0x00000000, 0xe71da697, 0x154a4b6f, 0xf257edf8, 0x2a9496de,
    0xcd893049, 0x3fdeddb1, 0xd8c37b26, 0x55292dbc, 0xb2348b2b,
    0x406366d3, 0xa77ec044, 0x7fbdbb62, 0x98a01df5, 0x6af7f00d,
    0x8dea569a, 0xaa525b78, 0x4d4ffdef, 0xbf181017, 0x5805b680,
    0x80c6cda6, 0x67db6b31, 0x958c86c9, 0x7291205e, 0xff7b76c4,
    0x1866d053, 0xea313dab, 0x0d2c9b3c, 0xd5efe01a, 0x32f2468d,
    0xc0a5ab75, 0x27b80de2, 0x8fd5b0b1, 0x68c81626, 0x9a9ffbde,
    0x7d825d49, 0xa541266f, 0x425c80f8, 0xb00b6d00, 0x5716cb97,
    0xdafc9d0d, 0x3de13b9a, 0xcfb6d662, 0x28ab70f5, 0xf0680bd3,
    0x1775ad44, 0xe52240bc, 0x023fe62b, 0x2587ebc9, 0xc29a4d5e,
    0x30cda0a6, 0xd7d00631, 0x0f137d17, 0xe80edb80, 0x1a593678,
    0xfd4490ef, 0x70aec675, 0x97b360e2, 0x65e48d1a, 0x82f92b8d,
    0x5a3a50ab, 0xbd27f63c, 0x4f701bc4, 0xa86dbd53, 0xc4da6723,
    0x23c7c1b4, 0xd1902c4c, 0x368d8adb, 0xee4ef1fd, 0x0953576a,
    0xfb04ba92, 0x1c191c05, 0x91f34a9f, 0x76eeec08, 0x84b901f0,
    0x63a4a767, 0xbb67dc41, 0x5c7a7ad6, 0xae2d972e, 0x493031b9,
    0x6e883c5b, 0x89959acc, 0x7bc27734, 0x9cdfd1a3, 0x441caa85,
    0xa3010c12, 0x5156e1ea, 0xb64b477d, 0x3ba111e7, 0xdcbcb770,
    0x2eeb5a88, 0xc9f6fc1f, 0x11358739, 0xf62821ae, 0x047fcc56,
    0xe3626ac1, 0x4b0fd792, 0xac127105, 0x5e459cfd, 0xb9583a6a,
    0x619b414c, 0x8686e7db, 0x74d10a23, 0x93ccacb4, 0x1e26fa2e,
    0xf93b5cb9, 0x0b6cb141, 0xec7117d6, 0x34b26cf0, 0xd3afca67,
    0x21f8279f, 0xc6e58108, 0xe15d8cea, 0x06402a7d, 0xf417c785,
    0x130a6112, 0xcbc91a34, 0x2cd4bca3, 0xde83515b, 0x399ef7cc,
    0xb474a156, 0x536907c1, 0xa13eea39, 0x46234cae, 0x9ee03788,
    0x79fd911f, 0x8baa7ce7, 0x6cb7da70, 0x52c5c807, 0xb5d86e90,
    0x478f8368, 0xa09225ff, 0x78515ed9, 0x9f4cf84e, 0x6d1b15b6,
    0x8a06b321, 0x07ece5bb, 0xe0f1432c, 0x12a6aed4, 0xf5bb0843,
    0x2d787365, 0xca65d5f2, 0x3832380a, 0xdf2f9e9d, 0xf897937f,
    0x1f8a35e8, 0xedddd810, 0x0ac07e87, 0xd20305a1, 0x351ea336,
    0xc7494ece, 0x2054e859, 0xadbebec3, 0x4aa31854, 0xb8f4f5ac,
    0x5fe9533b, 0x872a281d, 0x60378e8a, 0x92606372, 0x757dc5e5,
    0xdd1078b6, 0x3a0dde21, 0xc85a33d9, 0x2f47954e, 0xf784ee68,
    0x109948ff, 0xe2cea507, 0x05d30390, 0x8839550a, 0x6f24f39d,
    0x9d731e65, 0x7a6eb8f2, 0xa2adc3d4, 0x45b06543, 0xb7e788bb,
    0x50fa2e2c, 0x774223ce, 0x905f8559, 0x620868a1, 0x8515ce36,
    0x5dd6b510, 0xbacb1387, 0x489cfe7f, 0xaf8158e8, 0x226b0e72,
    0xc576a8e5, 0x3721451d, 0xd03ce38a, 0x08ff98ac, 0xefe23e3b,
    0x1db5d3c3, 0xfaa87554, 0x961faf24, 0x710209b3, 0x8355e44b,
    0x644842dc, 0xbc8b39fa, 0x5b969f6d, 0xa9c17295, 0x4edcd402,
    0xc3368298, 0x242b240f, 0xd67cc9f7, 0x31616f60, 0xe9a21446,
    0x0ebfb2d1, 0xfce85f29, 0x1bf5f9be, 0x3c4df45c, 0xdb5052cb,
    0x2907bf33, 0xce1a19a4, 0x16d96282, 0xf1c4c415, 0x039329ed,
    0xe48e8f7a, 0x6964d9e0, 0x8e797f77, 0x7c2e928f, 0x9b333418,
    0x43f04f3e, 0xa4ede9a9, 0x56ba0451, 0xb1a7a2c6, 0x19ca1f95,
    0xfed7b902, 0x0c8054fa, 0xeb9df26d, 0x335e894b, 0xd4432fdc,
    0x2614c224, 0xc10964b3, 0x4ce33229, 0xabfe94be, 0x59a97946,
    0xbeb4dfd1, 0x6677a4f7, 0x816a0260, 0x733def98, 0x9420490f,
    0xb39844ed, 0x5485e27a, 0xa6d20f82, 0x41cfa915, 0x990cd233,
    0x7e1174a4, 0x8c46995c, 0x6b5b3fcb, 0xe6b16951, 0x01accfc6,
    0xf3fb223e, 0x14e684a9, 0xcc25ff8f, 0x2b385918, 0xd96fb4e0,
    0x3e721277},
   {0x00000000, 0xa58b900e, 0x9066265d, 0x35edb653, 0xfbbd4afb,
    0x5e36daf5, 0x6bdb6ca6, 0xce50fca8, 0x2c0b93b7, 0x898003b9,
    0xbc6db5ea, 0x19e625e4, 0xd7b6d94c, 0x723d4942, 0x47d0ff11,
    0xe25b6f1f, 0x5817276e, 0xfd9cb760, 0xc8710133, 0x6dfa913d,
    0xa3aa6d95, 0x0621fd9b, 0x33cc4bc8, 0x9647dbc6, 0x741cb4d9,
    0xd19724d7, 0xe47a9284, 0x41f1028a, 0x8fa1fe22, 0x2a2a6e2c,
    0x1fc7d87f, 0xba4c4871, 0xb02e4edc, 0x15a5ded2, 0x20486881,
    0x85c3f88f, 0x4b930427, 0xee189429, 0xdbf5227a, 0x7e7eb274,
    0x9c25dd6b, 0x39ae4d65, 0x0c43fb36, 0xa9c86b38, 0x67989790,
    0xc213079e, 0xf7feb1cd, 0x527521c3, 0xe83969b2, 0x4db2f9bc,
    0x785f4fef, 0xddd4dfe1, 0x13842349, 0xb60fb347, 0x83e20514,
    0x2669951a, 0xc432fa05, 0x61b96a0b, 0x5454dc58, 0xf1df4c56,
    0x3f8fb0fe, 0x9a0420f0, 0xafe996a3, 0x0a6206ad, 0xbb2d9bf9,
    0x1ea60bf7, 0x2b4bbda4, 0x8ec02daa, 0x4090d102, 0xe51b410c,
    0xd0f6f75f, 0x757d6751, 0x9726084e, 0x32ad9840, 0x07402e13,
    0xa2cbbe1d, 0x6c9b42b5, 0xc910d2bb, 0xfcfd64e8, 0x5976f4e6,
    0xe33abc97, 0x46b12c99, 0x735c9aca, 0xd6d70ac4, 0x1887f66c,
    0xbd0c6662, 0x88e1d031, 0x2d6a403f, 0xcf312f20, 0x6ababf2e,
    0x5f57097d, 0xfadc9973, 0x348c65db, 0x9107f5d5, 0xa4ea4386,
    0x0161d388, 0x0b03d525, 0xae88452b, 0x9b65f378, 0x3eee6376,
    0xf0be9fde, 0x55350fd0, 0x60d8b983, 0xc553298d, 0x27084692,
    0x8283d69c, 0xb76e60cf, 0x12e5f0c1, 0xdcb50c69, 0x793e9c67,
    0x4cd32a34, 0xe958ba3a, 0x5314f24b, 0xf69f6245, 0xc372d416,
    0x66f94418, 0xa8a9b8b0, 0x0d2228be, 0x38cf9eed, 0x9d440ee3,
    0x7f1f61fc, 0xda94f1f2, 0xef7947a1, 0x4af2d7af, 0x84a22b07,
    0x2129bb09, 0x14c40d5a, 0xb14f9d54, 0xad2a31b3, 0x08a1a1bd,
    0x3d4c17ee, 0x98c787e0, 0x56977b48, 0xf31ceb46, 0xc6f15d15,
    0x637acd1b, 0x8121a204, 0x24aa320a, 0x11478459, 0xb4cc1457,
    0x7a9ce8ff, 0xdf1778f1, 0xeafacea2, 0x4f715eac, 0xf53d16dd,
    0x50b686d3, 0x655b3080, 0xc0d0a08e, 0x0e805c26, 0xab0bcc28,
    0x9ee67a7b, 0x3b6dea75, 0xd936856a, 0x7cbd1564, 0x4950a337,
    0xecdb3339, 0x228bcf91, 0x87005f9f, 0xb2ede9cc, 0x176679c2,
    0x1d047f6f, 0xb88fef61, 0x8d625932, 0x28e9c93c, 0xe6b93594,
    0x4332a59a, 0x76df13c9, 0xd35483c7, 0x310fecd8, 0x94847cd6,
    0xa169ca85, 0x04e25a8b, 0xcab2a623, 0x6f39362d, 0x5ad4807e,
    0xff5f1070, 0x45135801, 0xe098c80f, 0xd5757e5c, 0x70feee52,
    0xbeae12fa, 0x1b2582f4, 0x2ec834a7, 0x8b43a4a9, 0x6918cbb6,
    0xcc935bb8, 0xf97eedeb, 0x5cf57de5, 0x92a5814d, 0x372e1143,
    0x02c3a710, 0xa748371e, 0x1607aa4a, 0xb38c3a44, 0x86618c17,
    0x23ea1c19, 0xedbae0b1, 0x483170bf, 0x7ddcc6ec, 0xd85756e2,
    0x3a0c39fd, 0x9f87a9f3, 0xaa6a1fa0, 0x0fe18fae, 0xc1b17306,
    0x643ae308, 0x51d7555b, 0xf45cc555, 0x4e108d24, 0xeb9b1d2a,
    0xde76ab79, 0x7bfd3b77, 0xb5adc7df, 0x102657d1, 0x25cbe182,
    0x8040718c, 0x621b1e93, 0xc7908e9d, 0xf27d38ce, 0x57f6a8c0,
    0x99a65468, 0x3c2dc466, 0x09c07235, 0xac4be23b, 0xa629e496,
    0x03a27498, 0x364fc2cb, 0x93c452c5, 0x5d94ae6d, 0xf81f3e63,
    0xcdf28830, 0x6879183e, 0x8a227721, 0x2fa9e72f, 0x1a44517c,
    0xbfcfc172, 0x719f3dda, 0xd414add4, 0xe1f91b87, 0x44728b89,
    0xfe3ec3f8, 0x5bb553f6, 0x6e58e5a5, 0xcbd375ab, 0x05838903,
    0xa008190d, 0x95e5af5e, 0x306e3f50, 0xd235504f, 0x77bec041,
    0x42537612, 0xe7d8e61c, 0x29881ab4, 0x8c038aba, 0xb9ee3ce9,
    0x1c65ace7}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x0000000000000000, 0x0e908ba500000000, 0x5d26669000000000,
    0x53b6ed3500000000, 0xfb4abdfb00000000, 0xf5da365e00000000,
    0xa66cdb6b00000000, 0xa8fc50ce00000000, 0xb7930b2c00000000,
    0xb903808900000000, 0xeab56dbc00000000, 0xe425e61900000000,
    0x4cd9b6d700000000, 0x42493d7200000000, 0x11ffd04700000000,
    0x1f6f5be200000000, 0x6e27175800000000, 0x60b79cfd00000000,
    0x330171c800000000, 0x3d91fa6d00000000, 0x956daaa300000000,
    0x9bfd210600000000, 0xc84bcc3300000000, 0xc6db479600000000,
    0xd9b41c7400000000, 0xd72497d100000000, 0x84927ae400000000,
    0x8a02f14100000000, 0x22fea18f00000000, 0x2c6e2a2a00000000,
    0x7fd8c71f00000000, 0x71484cba00000000, 0xdc4e2eb000000000,
    0xd2dea51500000000, 0x8168482000000000, 0x8ff8c38500000000,
    0x2704934b00000000, 0x299418ee00000000, 0x7a22f5db00000000,
    0x74b27e7e00000000, 0x6bdd259c00000000, 0x654dae3900000000,
    0x36fb430c00000000, 0x386bc8a900000000, 0x9097986700000000,
    0x9e0713c200000000, 0xcdb1fef700000000, 0xc321755200000000,
    0xb26939e800000000, 0xbcf9b24d00000000, 0xef4f5f7800000000,
    0xe1dfd4dd00000000, 0x4923841300000000, 0x47b30fb600000000,
    0x1405e28300000000, 0x1a95692600000000, 0x05fa32c400000000,
    0x0b6ab96100000000, 0x58dc545400000000, 0x564cdff100000000,
    0xfeb08f3f00000000, 0xf020049a00000000, 0xa396e9af00000000,
    0xad06620a00000000, 0xf99b2dbb00000000, 0xf70ba61e00000000,
    0xa4bd4b2b00000000, 0xaa2dc08e00000000, 0x02d1904000000000,
    0x0c411be500000000, 0x5ff7f6d000000000, 0x51677d7500000000,
    0x4e08269700000000, 0x4098ad3200000000, 0x132e400700000000,
    0x1dbecba200000000, 0xb5429b6c00000000, 0xbbd210c900000000,
    0xe864fdfc00000000, 0xe6f4765900000000, 0x97bc3ae300000000,
    0x992cb14600000000, 0xca9a5c7300000000, 0xc40ad7d600000000,
    0x6cf6871800000000, 0x62660cbd00000000, 0x31d0e18800000000,
    0x3f406a2d00000000, 0x202f31cf00000000, 0x2ebfba6a00000000,
    0x7d09575f00000000, 0x7399dcfa00000000, 0xdb658c3400000000,
    0xd5f5079100000000, 0x8643eaa400000000, 0x88d3610100000000,
    0x25d5030b00000000, 0x2b4588ae00000000, 0x78f3659b00000000,
    0x7663ee3e00000000, 0xde9fbef000000000, 0xd00f355500000000,
    0x83b9d86000000000, 0x8d2953c500000000, 0x9246082700000000,
    0x9cd6838200000000, 0xcf606eb700000000, 0xc1f0e51200000000,
    0x690cb5dc00000000, 0x679c3e7900000000, 0x342ad34c00000000,
    0x3aba58e900000000, 0x4bf2145300000000, 0x45629ff600000000,
    0x16d472c300000000, 0x1844f96600000000, 0xb0b8a9a800000000,
    0xbe28220d00000000, 0xed9ecf3800000000, 0xe30e449d00000000,
    0xfc611f7f00000000, 0xf2f194da00000000, 0xa14779ef00000000,
    0xafd7f24a00000000, 0x072ba28400000000, 0x09bb292100000000,
    0x5a0dc41400000000, 0x549d4fb100000000, 0xb3312aad00000000,
    0xbda1a10800000000, 0xee174c3d00000000, 0xe087c79800000000,
    0x487b975600000000, 0x46eb1cf300000000, 0x155df1c600000000,
    0x1bcd7a6300000000, 0x04a2218100000000, 0x0a32aa2400000000,
    0x5984471100000000, 0x5714ccb400000000, 0xffe89c7a00000000,
    0xf17817df00000000, 0xa2cefaea00000000, 0xac5e714f00000000,
    0xdd163df500000000, 0xd386b65000000000, 0x80305b6500000000,
    0x8ea0d0c000000000, 0x265c800e00000000, 0x28cc0bab00000000,
    0x7b7ae69e00000000, 0x75ea6d3b00000000, 0x6a8536d900000000,
    0x6415bd7c00000000, 0x37a3504900000000, 0x3933dbec00000000,
    0x91cf8b2200000000, 0x9f5f008700000000, 0xcce9edb200000000,
    0xc279661700000000, 0x6f7f041d00000000, 0x61ef8fb800000000,
    0x3259628d00000000, 0x3cc9e92800000000, 0x9435b9e600000000,
    0x9aa5324300000000, 0xc913df7600000000, 0xc78354d300000000,
    0xd8ec0f3100000000, 0xd67c849400000000, 0x85ca69a100000000,
    0x8b5ae20400000000, 0x23a6b2ca00000000, 0x2d36396f00000000,
    0x7e80d45a00000000, 0x70105fff00000000, 0x0158134500000000,
    0x0fc898e000000000, 0x5c7e75d500000000, 0x52eefe7000000000,
    0xfa12aebe00000000, 0xf482251b00000000, 0xa734c82e00000000,
    0xa9a4438b00000000, 0xb6cb186900000000, 0xb85b93cc00000000,
    0xebed7ef900000000, 0xe57df55c00000000, 0x4d81a59200000000,
    0x43112e3700000000, 0x10a7c30200000000, 0x1e3748a700000000,
    0x4aaa071600000000, 0x443a8cb300000000, 0x178c618600000000,
    0x191cea2300000000, 0xb1e0baed00000000, 0xbf70314800000000,
    0xecc6dc7d00000000, 0xe25657d800000000, 0xfd390c3a00000000,
    0xf3a9879f00000000, 0xa01f6aaa00000000, 0xae8fe10f00000000,
    0x0673b1c100000000, 0x08e33a6400000000, 0x5b55d75100000000,
    0x55c55cf400000000, 0x248d104e00000000, 0x2a1d9beb00000000,
    0x79ab76de00000000, 0x773bfd7b00000000, 0xdfc7adb500000000,
    0xd157261000000000, 0x82e1cb2500000000, 0x8c71408000000000,
    0x931e1b6200000000, 0x9d8e90c700000000, 0xce387df200000000,
    0xc0a8f65700000000, 0x6854a69900000000, 0x66c42d3c00000000,
    0x3572c00900000000, 0x3be24bac00000000, 0x96e429a600000000,
    0x9874a20300000000, 0xcbc24f3600000000, 0xc552c49300000000,
    0x6dae945d00000000, 0x633e1ff800000000, 0x3088f2cd00000000,
    0x3e18796800000000, 0x2177228a00000000, 0x2fe7a92f00000000,
    0x7c51441a00000000, 0x72c1cfbf00000000, 0xda3d9f7100000000,
    0xd4ad14d400000000, 0x871bf9e100000000, 0x898b724400000000,
    0xf8c33efe00000000, 0xf653b55b00000000, 0xa5e5586e00000000,
    0xab75d3cb00000000, 0x0389830500000000, 0x0d1908a000000000,
    0x5eafe59500000000, 0x503f6e3000000000, 0x4f5035d200000000,
    0x41c0be7700000000, 0x1276534200000000, 0x1ce6d8e700000000,
    0xb41a882900000000, 0xba8a038c00000000, 0xe93ceeb900000000,
    0xe7ac651c00000000},
   {0x0000000000000000, 0x97a61de700000000, 0x6f4b4a1500000000,
    0xf8ed57f200000000, 0xde96942a00000000, 0x493089cd00000000,
    0xb1ddde3f00000000, 0x267bc3d800000000, 0xbc2d295500000000,
    0x2b8b34b200000000, 0xd366634000000000, 0x44c07ea700000000,
    0x62bbbd7f00000000, 0xf51da09800000000, 0x0df0f76a00000000,
    0x9a56ea8d00000000, 0x785b52aa00000000, 0xeffd4f4d00000000,
    0x171018bf00000000, 0x80b6055800000000, 0xa6cdc68000000000,
    0x316bdb6700000000, 0xc9868c9500000000, 0x5e20917200000000,
    0xc4767bff00000000, 0x53d0661800000000, 0xab3d31ea00000000,
    0x3c9b2c0d00000000, 0x1ae0efd500000000, 0x8d46f23200000000,
    0x75aba5c000000000, 0xe20db82700000000, 0xb1b0d58f00000000,
    0x2616c86800000000, 0xdefb9f9a00000000, 0x495d827d00000000,
    0x6f2641a500000000, 0xf8805c4200000000, 0x006d0bb000000000,
    0x97cb165700000000, 0x0d9dfcda00000000, 0x9a3be13d00000000,
    0x62d6b6cf00000000, 0xf570ab2800000000, 0xd30b68f000000000,
    0x44ad751700000000, 0xbc4022e500000000, 0x2be63f0200000000,
    0xc9eb872500000000, 0x5e4d9ac200000000, 0xa6a0cd3000000000,
    0x3106d0d700000000, 0x177d130f00000000, 0x80db0ee800000000,
    0x7836591a00000000, 0xef9044fd00000000, 0x75c6ae7000000000,
    0xe260b39700000000, 0x1a8de46500000000, 0x8d2bf98200000000,
    0xab503a5a00000000, 0x3cf627bd00000000, 0xc41b704f00000000,
    0x53bd6da800000000, 0x2367dac400000000, 0xb4c1c72300000000,
    0x4c2c90d100000000, 0xdb8a8d3600000000, 0xfdf14eee00000000,
    0x6a57530900000000, 0x92ba04fb00000000, 0x051c191c00000000,
    0x9f4af39100000000, 0x08ecee7600000000, 0xf001b98400000000,
    0x67a7a46300000000, 0x41dc67bb00000000, 0xd67a7a5c00000000,
    0x2e972dae00000000, 0xb931304900000000, 0x5b3c886e00000000,
    0xcc9a958900000000, 0x3477c27b00000000, 0xa3d1df9c00000000,
    0x85aa1c4400000000, 0x120c01a300000000, 0xeae1565100000000,
    0x7d474bb600000000, 0xe711a13b00000000, 0x70b7bcdc00000000,
    0x885aeb2e00000000, 0x1ffcf6c900000000, 0x3987351100000000,
    0xae2128f600000000, 0x56cc7f0400000000, 0xc16a62e300000000,
    0x92d70f4b00000000, 0x057112ac00000000, 0xfd9c455e00000000,
    0x6a3a58b900000000, 0x4c419b6100000000, 0xdbe7868600000000,
    0x230ad17400000000, 0xb4accc9300000000, 0x2efa261e00000000,
    0xb95c3bf900000000, 0x41b16c0b00000000, 0xd61771ec00000000,
    0xf06cb23400000000, 0x67caafd300000000, 0x9f27f82100000000,
    0x0881e5c600000000, 0xea8c5de100000000, 0x7d2a400600000000,
    0x85c717f400000000, 0x12610a1300000000, 0x341ac9cb00000000,
    0xa3bcd42c00000000, 0x5b5183de00000000, 0xccf79e3900000000,
    0x56a174b400000000, 0xc107695300000000, 0x39ea3ea100000000,
    0xae4c234600000000, 0x8837e09e00000000, 0x1f91fd7900000000,
    0xe77caa8b00000000, 0x70dab76c00000000, 0x07c8c55200000000,
    0x906ed8b500000000, 0x68838f4700000000, 0xff2592a000000000,
    0xd95e517800000000, 0x4ef84c9f00000000, 0xb6151b6d00000000,
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    0xe8680af100000000, 0x426dd00000000000, 0x834b515b00000000,
    0x294e8baa00000000, 0x9646946300000000, 0x3c434e9200000000,
    0xa951db2a00000000, 0x035401db00000000, 0xbc5c1e1200000000,
    0x1659c4e300000000}};

#else /* W == 4 */

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xae689191, 0x87a02563, 0x29c8b4f2, 0xd4314c87,
    0x7a59dd16, 0x539169e4, 0xfdf9f875, 0x73139f4f, 0xdd7b0ede,
    0xf4b3ba2c, 0x5adb2bbd, 0xa722d3c8, 0x094a4259, 0x2082f6ab,
    0x8eea673a, 0xe6273e9e, 0x484faf0f, 0x61871bfd, 0xcfef8a6c,
    0x32167219, 0x9c7ee388, 0xb5b6577a, 0x1bdec6eb, 0x9534a1d1,
    0x3b5c3040, 0x129484b2, 0xbcfc1523, 0x4105ed56, 0xef6d7cc7,
    0xc6a5c835, 0x68cd59a4, 0x173f7b7d, 0xb957eaec, 0x909f5e1e,
    0x3ef7cf8f, 0xc30e37fa, 0x6d66a66b, 0x44ae1299, 0xeac68308,
    0x642ce432, 0xca4475a3, 0xe38cc151, 0x4de450c0, 0xb01da8b5,
    0x1e753924, 0x37bd8dd6, 0x99d51c47, 0xf11845e3, 0x5f70d472,
    0x76b86080, 0xd8d0f111, 0x25290964, 0x8b4198f5, 0xa2892c07,
    0x0ce1bd96, 0x820bdaac, 0x2c634b3d, 0x05abffcf, 0xabc36e5e,
    0x563a962b, 0xf85207ba, 0xd19ab348, 0x7ff222d9, 0x2e7ef6fa,
    0x8016676b, 0xa9ded399, 0x07b64208, 0xfa4fba7d, 0x54272bec,
    0x7def9f1e, 0xd3870e8f, 0x5d6d69b5, 0xf305f824, 0xdacd4cd6,
    0x74a5dd47, 0x895c2532, 0x2734b4a3, 0x0efc0051, 0xa09491c0,
    0xc859c864, 0x663159f5, 0x4ff9ed07, 0xe1917c96, 0x1c6884e3,
    0xb2001572, 0x9bc8a180, 0x35a03011, 0xbb4a572b, 0x1522c6ba,
    0x3cea7248, 0x9282e3d9, 0x6f7b1bac, 0xc1138a3d, 0xe8db3ecf,
    0x46b3af5e, 0x39418d87, 0x97291c16, 0xbee1a8e4, 0x10893975,
    0xed70c100, 0x43185091, 0x6ad0e463, 0xc4b875f2, 0x4a5212c8,
    0xe43a8359, 0xcdf237ab, 0x639aa63a, 0x9e635e4f, 0x300bcfde,
    0x19c37b2c, 0xb7abeabd, 0xdf66b319, 0x710e2288, 0x58c6967a,
    0xf6ae07eb, 0x0b57ff9e, 0xa53f6e0f, 0x8cf7dafd, 0x229f4b6c,
    0xac752c56, 0x021dbdc7, 0x2bd50935, 0x85bd98a4, 0x784460d1,
    0xd62cf140, 0xffe445b2, 0x518cd423, 0x5cfdedf4, 0xf2957c65,
    0xdb5dc897, 0x75355906, 0x88cca173, 0x26a430e2, 0x0f6c8410,
    0xa1041581, 0x2fee72bb, 0x8186e32a, 0xa84e57d8, 0x0626c649,
    0xfbdf3e3c, 0x55b7afad, 0x7c7f1b5f, 0xd2178ace, 0xbadad36a,
    0x14b242fb, 0x3d7af609, 0x93126798, 0x6eeb9fed, 0xc0830e7c,
    0xe94bba8e, 0x47232b1f, 0xc9c94c25, 0x67a1ddb4, 0x4e696946,
    0xe001f8d7, 0x1df800a2, 0xb3909133, 0x9a5825c1, 0x3430b450,
    0x4bc29689, 0xe5aa0718, 0xcc62b3ea, 0x620a227b, 0x9ff3da0e,
    0x319b4b9f, 0x1853ff6d, 0xb63b6efc, 0x38d109c6, 0x96b99857,
    0xbf712ca5, 0x1119bd34, 0xece04541, 0x4288d4d0, 0x6b406022,
    0xc528f1b3, 0xade5a817, 0x038d3986, 0x2a458d74, 0x842d1ce5,
    0x79d4e490, 0xd7bc7501, 0xfe74c1f3, 0x501c5062, 0xdef63758,
    0x709ea6c9, 0x5956123b, 0xf73e83aa, 0x0ac77bdf, 0xa4afea4e,
    0x8d675ebc, 0x230fcf2d, 0x72831b0e, 0xdceb8a9f, 0xf5233e6d,
    0x5b4baffc, 0xa6b25789, 0x08dac618, 0x211272ea, 0x8f7ae37b,
    0x01908441, 0xaff815d0, 0x8630a122, 0x285830b3, 0xd5a1c8c6,
    0x7bc95957, 0x5201eda5, 0xfc697c34, 0x94a42590, 0x3accb401,
    0x130400f3, 0xbd6c9162, 0x40956917, 0xeefdf886, 0xc7354c74,
    0x695ddde5, 0xe7b7badf, 0x49df2b4e, 0x60179fbc, 0xce7f0e2d,
    0x3386f658, 0x9dee67c9, 0xb426d33b, 0x1a4e42aa, 0x65bc6073,
    0xcbd4f1e2, 0xe21c4510, 0x4c74d481, 0xb18d2cf4, 0x1fe5bd65,
    0x362d0997, 0x98459806, 0x16afff3c, 0xb8c76ead, 0x910fda5f,
    0x3f674bce, 0xc29eb3bb, 0x6cf6222a, 0x453e96d8, 0xeb560749,
    0x839b5eed, 0x2df3cf7c, 0x043b7b8e, 0xaa53ea1f, 0x57aa126a,
    0xf9c283fb, 0xd00a3709, 0x7e62a698, 0xf088c1a2, 0x5ee05033,
    0x7728e4c1, 0xd9407550, 0x24b98d25, 0x8ad11cb4, 0xa319a846,
    0x0d7139d7},
   {0x00000000, 0xb9fbdbe8, 0xa886b191, 0x117d6a79, 0x8a7c6563,
    0x3387be8b, 0x22fad4f2, 0x9b010f1a, 0xcf89cc87, 0x7672176f,
    0x670f7d16, 0xdef4a6fe, 0x45f5a9e4, 0xfc0e720c, 0xed731875,
    0x5488c39d, 0x44629f4f, 0xfd9944a7, 0xece42ede, 0x551ff536,
    0xce1efa2c, 0x77e521c4, 0x66984bbd, 0xdf639055, 0x8beb53c8,
    0x32108820, 0x236de259, 0x9a9639b1, 0x019736ab, 0xb86ced43,
    0xa911873a, 0x10ea5cd2, 0x88c53e9e, 0x313ee576, 0x20438f0f,
    0x99b854e7, 0x02b95bfd, 0xbb428015, 0xaa3fea6c, 0x13c43184,
    0x474cf219, 0xfeb729f1, 0xefca4388, 0x56319860, 0xcd30977a,
    0x74cb4c92, 0x65b626eb, 0xdc4dfd03, 0xcca7a1d1, 0x755c7a39,
    0x64211040, 0xdddacba8, 0x46dbc4b2, 0xff201f5a, 0xee5d7523,
    0x57a6aecb, 0x032e6d56, 0xbad5b6be, 0xaba8dcc7, 0x1253072f,
    0x89520835, 0x30a9d3dd, 0x21d4b9a4, 0x982f624c, 0xcafb7b7d,
    0x7300a095, 0x627dcaec, 0xdb861104, 0x40871e1e, 0xf97cc5f6,
    0xe801af8f, 0x51fa7467, 0x0572b7fa, 0xbc896c12, 0xadf4066b,
    0x140fdd83, 0x8f0ed299, 0x36f50971, 0x27886308, 0x9e73b8e0,
    0x8e99e432, 0x37623fda, 0x261f55a3, 0x9fe48e4b, 0x04e58151,
    0xbd1e5ab9, 0xac6330c0, 0x1598eb28, 0x411028b5, 0xf8ebf35d,
    0xe9969924, 0x506d42cc, 0xcb6c4dd6, 0x7297963e, 0x63eafc47,
    0xda1127af, 0x423e45e3, 0xfbc59e0b, 0xeab8f472, 0x53432f9a,
    0xc8422080, 0x71b9fb68, 0x60c49111, 0xd93f4af9, 0x8db78964,
    0x344c528c, 0x253138f5, 0x9ccae31d, 0x07cbec07, 0xbe3037ef,
    0xaf4d5d96, 0x16b6867e, 0x065cdaac, 0xbfa70144, 0xaeda6b3d,
    0x1721b0d5, 0x8c20bfcf, 0x35db6427, 0x24a60e5e, 0x9d5dd5b6,
    0xc9d5162b, 0x702ecdc3, 0x6153a7ba, 0xd8a87c52, 0x43a97348,
    0xfa52a8a0, 0xeb2fc2d9, 0x52d41931, 0x4e87f0bb, 0xf77c2b53,
    0xe601412a, 0x5ffa9ac2, 0xc4fb95d8, 0x7d004e30, 0x6c7d2449,
    0xd586ffa1, 0x810e3c3c, 0x38f5e7d4, 0x29888dad, 0x90735645,
    0x0b72595f, 0xb28982b7, 0xa3f4e8ce, 0x1a0f3326, 0x0ae56ff4,
    0xb31eb41c, 0xa263de65, 0x1b98058d, 0x80990a97, 0x3962d17f,
    0x281fbb06, 0x91e460ee, 0xc56ca373, 0x7c97789b, 0x6dea12e2,
    0xd411c90a, 0x4f10c610, 0xf6eb1df8, 0xe7967781, 0x5e6dac69,
    0xc642ce25, 0x7fb915cd, 0x6ec47fb4, 0xd73fa45c, 0x4c3eab46,
    0xf5c570ae, 0xe4b81ad7, 0x5d43c13f, 0x09cb02a2, 0xb030d94a,
    0xa14db333, 0x18b668db, 0x83b767c1, 0x3a4cbc29, 0x2b31d650,
    0x92ca0db8, 0x8220516a, 0x3bdb8a82, 0x2aa6e0fb, 0x935d3b13,
    0x085c3409, 0xb1a7efe1, 0xa0da8598, 0x19215e70, 0x4da99ded,
    0xf4524605, 0xe52f2c7c, 0x5cd4f794, 0xc7d5f88e, 0x7e2e2366,
    0x6f53491f, 0xd6a892f7, 0x847c8bc6, 0x3d87502e, 0x2cfa3a57,
    0x9501e1bf, 0x0e00eea5, 0xb7fb354d, 0xa6865f34, 0x1f7d84dc,
    0x4bf54741, 0xf20e9ca9, 0xe373f6d0, 0x5a882d38, 0xc1892222,
    0x7872f9ca, 0x690f93b3, 0xd0f4485b, 0xc01e1489, 0x79e5cf61,
    0x6898a518, 0xd1637ef0, 0x4a6271ea, 0xf399aa02, 0xe2e4c07b,
    0x5b1f1b93, 0x0f97d80e, 0xb66c03e6, 0xa711699f, 0x1eeab277,
    0x85ebbd6d, 0x3c106685, 0x2d6d0cfc, 0x9496d714, 0x0cb9b558,
    0xb5426eb0, 0xa43f04c9, 0x1dc4df21, 0x86c5d03b, 0x3f3e0bd3,
    0x2e4361aa, 0x97b8ba42, 0xc33079df, 0x7acba237, 0x6bb6c84e,
    0xd24d13a6, 0x494c1cbc, 0xf0b7c754, 0xe1caad2d, 0x583176c5,
    0x48db2a17, 0xf120f1ff, 0xe05d9b86, 0x59a6406e, 0xc2a74f74,
    0x7b5c949c, 0x6a21fee5, 0xd3da250d, 0x8752e690, 0x3ea93d78,
    0x2fd45701, 0x962f8ce9, 0x0d2e83f3, 0xb4d5581b, 0xa5a83262,
    0x1c53e98a},
   {0x00000000, 0x9d0fe176, 0xe16ec4ad, 0x7c6125db, 0x19ac8f1b,
    0x84a36e6d, 0xf8c24bb6, 0x65cdaac0, 0x33591e36, 0xae56ff40,
    0xd237da9b, 0x4f383bed, 0x2af5912d, 0xb7fa705b, 0xcb9b5580,
    0x5694b4f6, 0x66b23c6c, 0xfbbddd1a, 0x87dcf8c1, 0x1ad319b7,
    0x7f1eb377, 0xe2115201, 0x9e7077da, 0x037f96ac, 0x55eb225a,
    0xc8e4c32c, 0xb485e6f7, 0x298a0781, 0x4c47ad41, 0xd1484c37,
    0xad2969ec, 0x3026889a, 0xcd6478d8, 0x506b99ae, 0x2c0abc75,
    0xb1055d03, 0xd4c8f7c3, 0x49c716b5, 0x35a6336e, 0xa8a9d218,
    0xfe3d66ee, 0x63328798, 0x1f53a243, 0x825c4335, 0xe791e9f5,
    0x7a9e0883, 0x06ff2d58, 0x9bf0cc2e, 0xabd644b4, 0x36d9a5c2,
    0x4ab88019, 0xd7b7616f, 0xb27acbaf, 0x2f752ad9, 0x53140f02,
    0xce1bee74, 0x988f5a82, 0x0580bbf4, 0x79e19e2f, 0xe4ee7f59,
    0x8123d599, 0x1c2c34ef, 0x604d1134, 0xfd42f042, 0x41b9f7f1,
    0xdcb61687, 0xa0d7335c, 0x3dd8d22a, 0x581578ea, 0xc51a999c,
    0xb97bbc47, 0x24745d31, 0x72e0e9c7, 0xefef08b1, 0x938e2d6a,
    0x0e81cc1c, 0x6b4c66dc, 0xf64387aa, 0x8a22a271, 0x172d4307,
    0x270bcb9d, 0xba042aeb, 0xc6650f30, 0x5b6aee46, 0x3ea74486,
    0xa3a8a5f0, 0xdfc9802b, 0x42c6615d, 0x1452d5ab, 0x895d34dd,
    0xf53c1106, 0x6833f070, 0x0dfe5ab0, 0x90f1bbc6, 0xec909e1d,
    0x719f7f6b, 0x8cdd8f29, 0x11d26e5f, 0x6db34b84, 0xf0bcaaf2,
    0x95710032, 0x087ee144, 0x741fc49f, 0xe91025e9, 0xbf84911f,
    0x228b7069, 0x5eea55b2, 0xc3e5b4c4, 0xa6281e04, 0x3b27ff72,
    0x4746daa9, 0xda493bdf, 0xea6fb345, 0x77605233, 0x0b0177e8,
    0x960e969e, 0xf3c33c5e, 0x6eccdd28, 0x12adf8f3, 0x8fa21985,
    0xd936ad73, 0x44394c05, 0x385869de, 0xa55788a8, 0xc09a2268,
    0x5d95c31e, 0x21f4e6c5, 0xbcfb07b3, 0x8373efe2, 0x1e7c0e94,
    0x621d2b4f, 0xff12ca39, 0x9adf60f9, 0x07d0818f, 0x7bb1a454,
    0xe6be4522, 0xb02af1d4, 0x2d2510a2, 0x51443579, 0xcc4bd40f,
    0xa9867ecf, 0x34899fb9, 0x48e8ba62, 0xd5e75b14, 0xe5c1d38e,
    0x78ce32f8, 0x04af1723, 0x99a0f655, 0xfc6d5c95, 0x6162bde3,
    0x1d039838, 0x800c794e, 0xd698cdb8, 0x4b972cce, 0x37f60915,
    0xaaf9e863, 0xcf3442a3, 0x523ba3d5, 0x2e5a860e, 0xb3556778,
    0x4e17973a, 0xd318764c, 0xaf795397, 0x3276b2e1, 0x57bb1821,
    0xcab4f957, 0xb6d5dc8c, 0x2bda3dfa, 0x7d4e890c, 0xe041687a,
    0x9c204da1, 0x012facd7, 0x64e20617, 0xf9ede761, 0x858cc2ba,
    0x188323cc, 0x28a5ab56, 0xb5aa4a20, 0xc9cb6ffb, 0x54c48e8d,
    0x3109244d, 0xac06c53b, 0xd067e0e0, 0x4d680196, 0x1bfcb560,
    0x86f35416, 0xfa9271cd, 0x679d90bb, 0x02503a7b, 0x9f5fdb0d,
    0xe33efed6, 0x7e311fa0, 0xc2ca1813, 0x5fc5f965, 0x23a4dcbe,
    0xbeab3dc8, 0xdb669708, 0x4669767e, 0x3a0853a5, 0xa707b2d3,
    0xf1930625, 0x6c9ce753, 0x10fdc288, 0x8df223fe, 0xe83f893e,
    0x75306848, 0x09514d93, 0x945eace5, 0xa478247f, 0x3977c509,
    0x4516e0d2, 0xd81901a4, 0xbdd4ab64, 0x20db4a12, 0x5cba6fc9,
    0xc1b58ebf, 0x97213a49, 0x0a2edb3f, 0x764ffee4, 0xeb401f92,
    0x8e8db552, 0x13825424, 0x6fe371ff, 0xf2ec9089, 0x0fae60cb,
    0x92a181bd, 0xeec0a466, 0x73cf4510, 0x1602efd0, 0x8b0d0ea6,
    0xf76c2b7d, 0x6a63ca0b, 0x3cf77efd, 0xa1f89f8b, 0xdd99ba50,
    0x40965b26, 0x255bf1e6, 0xb8541090, 0xc435354b, 0x593ad43d,
    0x691c5ca7, 0xf413bdd1, 0x8872980a, 0x157d797c, 0x70b0d3bc,
    0xedbf32ca, 0x91de1711, 0x0cd1f667, 0x5a454291, 0xc74aa3e7,
    0xbb2b863c, 0x2624674a, 0x43e9cd8a, 0xdee62cfc, 0xa2870927,
    0x3f88e851},
   {0x00000000, 0xdd96d985, 0x605cb54b, 0xbdca6cce, 0xc0b96a96,
    0x1d2fb313, 0xa0e5dfdd, 0x7d730658, 0x5a03d36d, 0x87950ae8,
    0x3a5f6626, 0xe7c9bfa3, 0x9abab9fb, 0x472c607e, 0xfae60cb0,
    0x2770d535, 0xb407a6da, 0x69917f5f, 0xd45b1391, 0x09cdca14,
    0x74becc4c, 0xa92815c9, 0x14e27907, 0xc974a082, 0xee0475b7,
    0x3392ac32, 0x8e58c0fc, 0x53ce1979, 0x2ebd1f21, 0xf32bc6a4,
    0x4ee1aa6a, 0x937773ef, 0xb37e4bf5, 0x6ee89270, 0xd322febe,
    0x0eb4273b, 0x73c72163, 0xae51f8e6, 0x139b9428, 0xce0d4dad,
    0xe97d9898, 0x34eb411d, 0x89212dd3, 0x54b7f456, 0x29c4f20e,
    0xf4522b8b, 0x49984745, 0x940e9ec0, 0x0779ed2f, 0xdaef34aa,
    0x67255864, 0xbab381e1, 0xc7c087b9, 0x1a565e3c, 0xa79c32f2,
    0x7a0aeb77, 0x5d7a3e42, 0x80ece7c7, 0x3d268b09, 0xe0b0528c,
    0x9dc354d4, 0x40558d51, 0xfd9fe19f, 0x2009381a, 0xbd8d91ab,
    0x601b482e, 0xddd124e0, 0x0047fd65, 0x7d34fb3d, 0xa0a222b8,
    0x1d684e76, 0xc0fe97f3, 0xe78e42c6, 0x3a189b43, 0x87d2f78d,
    0x5a442e08, 0x27372850, 0xfaa1f1d5, 0x476b9d1b, 0x9afd449e,
    0x098a3771, 0xd41ceef4, 0x69d6823a, 0xb4405bbf, 0xc9335de7,
    0x14a58462, 0xa96fe8ac, 0x74f93129, 0x5389e41c, 0x8e1f3d99,
    0x33d55157, 0xee4388d2, 0x93308e8a, 0x4ea6570f, 0xf36c3bc1,
    0x2efae244, 0x0ef3da5e, 0xd36503db, 0x6eaf6f15, 0xb339b690,
    0xce4ab0c8, 0x13dc694d, 0xae160583, 0x7380dc06, 0x54f00933,
    0x8966d0b6, 0x34acbc78, 0xe93a65fd, 0x944963a5, 0x49dfba20,
    0xf415d6ee, 0x29830f6b, 0xbaf47c84, 0x6762a501, 0xdaa8c9cf,
    0x073e104a, 0x7a4d1612, 0xa7dbcf97, 0x1a11a359, 0xc7877adc,
    0xe0f7afe9, 0x3d61766c, 0x80ab1aa2, 0x5d3dc327, 0x204ec57f,
    0xfdd81cfa, 0x40127034, 0x9d84a9b1, 0xa06a2517, 0x7dfcfc92,
    0xc036905c, 0x1da049d9, 0x60d34f81, 0xbd459604, 0x008ffaca,
    0xdd19234f, 0xfa69f67a, 0x27ff2fff, 0x9a354331, 0x47a39ab4,
    0x3ad09cec, 0xe7464569, 0x5a8c29a7, 0x871af022, 0x146d83cd,
    0xc9fb5a48, 0x74313686, 0xa9a7ef03, 0xd4d4e95b, 0x094230de,
    0xb4885c10, 0x691e8595, 0x4e6e50a0, 0x93f88925, 0x2e32e5eb,
    0xf3a43c6e, 0x8ed73a36, 0x5341e3b3, 0xee8b8f7d, 0x331d56f8,
    0x13146ee2, 0xce82b767, 0x7348dba9, 0xaede022c, 0xd3ad0474,
    0x0e3bddf1, 0xb3f1b13f, 0x6e6768ba, 0x4917bd8f, 0x9481640a,
    0x294b08c4, 0xf4ddd141, 0x89aed719, 0x54380e9c, 0xe9f26252,
    0x3464bbd7, 0xa713c838, 0x7a8511bd, 0xc74f7d73, 0x1ad9a4f6,
    0x67aaa2ae, 0xba3c7b2b, 0x07f617e5, 0xda60ce60, 0xfd101b55,
    0x2086c2d0, 0x9d4cae1e, 0x40da779b, 0x3da971c3, 0xe03fa846,
    0x5df5c488, 0x80631d0d, 0x1de7b4bc, 0xc0716d39, 0x7dbb01f7,
    0xa02dd872, 0xdd5ede2a, 0x00c807af, 0xbd026b61, 0x6094b2e4,
    0x47e467d1, 0x9a72be54, 0x27b8d29a, 0xfa2e0b1f, 0x875d0d47,
    0x5acbd4c2, 0xe701b80c, 0x3a976189, 0xa9e01266, 0x7476cbe3,
    0xc9bca72d, 0x142a7ea8, 0x695978f0, 0xb4cfa175, 0x0905cdbb,
    0xd493143e, 0xf3e3c10b, 0x2e75188e, 0x93bf7440, 0x4e29adc5,
    0x335aab9d, 0xeecc7218, 0x53061ed6, 0x8e90c753, 0xae99ff49,
    0x730f26cc, 0xcec54a02, 0x13539387, 0x6e2095df, 0xb3b64c5a,
    0x0e7c2094, 0xd3eaf911, 0xf49a2c24, 0x290cf5a1, 0x94c6996f,
    0x495040ea, 0x342346b2, 0xe9b59f37, 0x547ff3f9, 0x89e92a7c,
    0x1a9e5993, 0xc7088016, 0x7ac2ecd8, 0xa754355d, 0xda273305,
    0x07b1ea80, 0xba7b864e, 0x67ed5fcb, 0x409d8afe, 0x9d0b537b,
    0x20c13fb5, 0xfd57e630, 0x8024e068, 0x5db239ed, 0xe0785523,
    0x3dee8ca6}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x00000000, 0x85d996dd, 0x4bb55c60, 0xce6ccabd, 0x966ab9c0,
    0x13b32f1d, 0xdddfe5a0, 0x5806737d, 0x6dd3035a, 0xe80a9587,
    0x26665f3a, 0xa3bfc9e7, 0xfbb9ba9a, 0x7e602c47, 0xb00ce6fa,
    0x35d57027, 0xdaa607b4, 0x5f7f9169, 0x91135bd4, 0x14cacd09,
    0x4cccbe74, 0xc91528a9, 0x0779e214, 0x82a074c9, 0xb77504ee,
    0x32ac9233, 0xfcc0588e, 0x7919ce53, 0x211fbd2e, 0xa4c62bf3,
    0x6aaae14e, 0xef737793, 0xf54b7eb3, 0x7092e86e, 0xbefe22d3,
    0x3b27b40e, 0x6321c773, 0xe6f851ae, 0x28949b13, 0xad4d0dce,
    0x98987de9, 0x1d41eb34, 0xd32d2189, 0x56f4b754, 0x0ef2c429,
    0x8b2b52f4, 0x45479849, 0xc09e0e94, 0x2fed7907, 0xaa34efda,
    0x64582567, 0xe181b3ba, 0xb987c0c7, 0x3c5e561a, 0xf2329ca7,
    0x77eb0a7a, 0x423e7a5d, 0xc7e7ec80, 0x098b263d, 0x8c52b0e0,
    0xd454c39d, 0x518d5540, 0x9fe19ffd, 0x1a380920, 0xab918dbd,
    0x2e481b60, 0xe024d1dd, 0x65fd4700, 0x3dfb347d, 0xb822a2a0,
    0x764e681d, 0xf397fec0, 0xc6428ee7, 0x439b183a, 0x8df7d287,
    0x082e445a, 0x50283727, 0xd5f1a1fa, 0x1b9d6b47, 0x9e44fd9a,
    0x71378a09, 0xf4ee1cd4, 0x3a82d669, 0xbf5b40b4, 0xe75d33c9,
    0x6284a514, 0xace86fa9, 0x2931f974, 0x1ce48953, 0x993d1f8e,
    0x5751d533, 0xd28843ee, 0x8a8e3093, 0x0f57a64e, 0xc13b6cf3,
    0x44e2fa2e, 0x5edaf30e, 0xdb0365d3, 0x156faf6e, 0x90b639b3,
    0xc8b04ace, 0x4d69dc13, 0x830516ae, 0x06dc8073, 0x3309f054,
    0xb6d06689, 0x78bcac34, 0xfd653ae9, 0xa5634994, 0x20badf49,
    0xeed615f4, 0x6b0f8329, 0x847cf4ba, 0x01a56267, 0xcfc9a8da,
    0x4a103e07, 0x12164d7a, 0x97cfdba7, 0x59a3111a, 0xdc7a87c7,
    0xe9aff7e0, 0x6c76613d, 0xa21aab80, 0x27c33d5d, 0x7fc54e20,
    0xfa1cd8fd, 0x34701240, 0xb1a9849d, 0x17256aa0, 0x92fcfc7d,
    0x5c9036c0, 0xd949a01d, 0x814fd360, 0x049645bd, 0xcafa8f00,
    0x4f2319dd, 0x7af669fa, 0xff2fff27, 0x3143359a, 0xb49aa347,
    0xec9cd03a, 0x694546e7, 0xa7298c5a, 0x22f01a87, 0xcd836d14,
    0x485afbc9, 0x86363174, 0x03efa7a9, 0x5be9d4d4, 0xde304209,
    0x105c88b4, 0x95851e69, 0xa0506e4e, 0x2589f893, 0xebe5322e,
    0x6e3ca4f3, 0x363ad78e, 0xb3e34153, 0x7d8f8bee, 0xf8561d33,
    0xe26e1413, 0x67b782ce, 0xa9db4873, 0x2c02deae, 0x7404add3,
    0xf1dd3b0e, 0x3fb1f1b3, 0xba68676e, 0x8fbd1749, 0x0a648194,
    0xc4084b29, 0x41d1ddf4, 0x19d7ae89, 0x9c0e3854, 0x5262f2e9,
    0xd7bb6434, 0x38c813a7, 0xbd11857a, 0x737d4fc7, 0xf6a4d91a,
    0xaea2aa67, 0x2b7b3cba, 0xe517f607, 0x60ce60da, 0x551b10fd,
    0xd0c28620, 0x1eae4c9d, 0x9b77da40, 0xc371a93d, 0x46a83fe0,
    0x88c4f55d, 0x0d1d6380, 0xbcb4e71d, 0x396d71c0, 0xf701bb7d,
    0x72d82da0, 0x2ade5edd, 0xaf07c800, 0x616b02bd, 0xe4b29460,
    0xd167e447, 0x54be729a, 0x9ad2b827, 0x1f0b2efa, 0x470d5d87,
    0xc2d4cb5a, 0x0cb801e7, 0x8961973a, 0x6612e0a9, 0xe3cb7674,
    0x2da7bcc9, 0xa87e2a14, 0xf0785969, 0x75a1cfb4, 0xbbcd0509,
    0x3e1493d4, 0x0bc1e3f3, 0x8e18752e, 0x4074bf93, 0xc5ad294e,
    0x9dab5a33, 0x1872ccee, 0xd61e0653, 0x53c7908e, 0x49ff99ae,
    0xcc260f73, 0x024ac5ce, 0x87935313, 0xdf95206e, 0x5a4cb6b3,
    0x94207c0e, 0x11f9ead3, 0x242c9af4, 0xa1f50c29, 0x6f99c694,
    0xea405049, 0xb2462334, 0x379fb5e9, 0xf9f37f54, 0x7c2ae989,
    0x93599e1a, 0x168008c7, 0xd8ecc27a, 0x5d3554a7, 0x053327da,
    0x80eab107, 0x4e867bba, 0xcb5fed67, 0xfe8a9d40, 0x7b530b9d,
    0xb53fc120, 0x30e657fd, 0x68e02480, 0xed39b25d, 0x235578e0,
    0xa68cee3d},
   {0x00000000, 0x76e10f9d, 0xadc46ee1, 0xdb25617c, 0x1b8fac19,
    0x6d6ea384, 0xb64bc2f8, 0xc0aacd65, 0x361e5933, 0x40ff56ae,
    0x9bda37d2, 0xed3b384f, 0x2d91f52a, 0x5b70fab7, 0x80559bcb,
    0xf6b49456, 0x6c3cb266, 0x1addbdfb, 0xc1f8dc87, 0xb719d31a,
    0x77b31e7f, 0x015211e2, 0xda77709e, 0xac967f03, 0x5a22eb55,
    0x2cc3e4c8, 0xf7e685b4, 0x81078a29, 0x41ad474c, 0x374c48d1,
    0xec6929ad, 0x9a882630, 0xd87864cd, 0xae996b50, 0x75bc0a2c,
    0x035d05b1, 0xc3f7c8d4, 0xb516c749, 0x6e33a635, 0x18d2a9a8,
    0xee663dfe, 0x98873263, 0x43a2531f, 0x35435c82, 0xf5e991e7,
    0x83089e7a, 0x582dff06, 0x2eccf09b, 0xb444d6ab, 0xc2a5d936,
    0x1980b84a, 0x6f61b7d7, 0xafcb7ab2, 0xd92a752f, 0x020f1453,
    0x74ee1bce, 0x825a8f98, 0xf4bb8005, 0x2f9ee179, 0x597feee4,
    0x99d52381, 0xef342c1c, 0x34114d60, 0x42f042fd, 0xf1f7b941,
    0x8716b6dc, 0x5c33d7a0, 0x2ad2d83d, 0xea781558, 0x9c991ac5,
    0x47bc7bb9, 0x315d7424, 0xc7e9e072, 0xb108efef, 0x6a2d8e93,
    0x1ccc810e, 0xdc664c6b, 0xaa8743f6, 0x71a2228a, 0x07432d17,
    0x9dcb0b27, 0xeb2a04ba, 0x300f65c6, 0x46ee6a5b, 0x8644a73e,
    0xf0a5a8a3, 0x2b80c9df, 0x5d61c642, 0xabd55214, 0xdd345d89,
    0x06113cf5, 0x70f03368, 0xb05afe0d, 0xc6bbf190, 0x1d9e90ec,
    0x6b7f9f71, 0x298fdd8c, 0x5f6ed211, 0x844bb36d, 0xf2aabcf0,
    0x32007195, 0x44e17e08, 0x9fc41f74, 0xe92510e9, 0x1f9184bf,
    0x69708b22, 0xb255ea5e, 0xc4b4e5c3, 0x041e28a6, 0x72ff273b,
    0xa9da4647, 0xdf3b49da, 0x45b36fea, 0x33526077, 0xe877010b,
    0x9e960e96, 0x5e3cc3f3, 0x28ddcc6e, 0xf3f8ad12, 0x8519a28f,
    0x73ad36d9, 0x054c3944, 0xde695838, 0xa88857a5, 0x68229ac0,
    0x1ec3955d, 0xc5e6f421, 0xb307fbbc, 0xe2ef7383, 0x940e7c1e,
    0x4f2b1d62, 0x39ca12ff, 0xf960df9a, 0x8f81d007, 0x54a4b17b,
    0x2245bee6, 0xd4f12ab0, 0xa210252d, 0x79354451, 0x0fd44bcc,
    0xcf7e86a9, 0xb99f8934, 0x62bae848, 0x145be7d5, 0x8ed3c1e5,
    0xf832ce78, 0x2317af04, 0x55f6a099, 0x955c6dfc, 0xe3bd6261,
    0x3898031d, 0x4e790c80, 0xb8cd98d6, 0xce2c974b, 0x1509f637,
    0x63e8f9aa, 0xa34234cf, 0xd5a33b52, 0x0e865a2e, 0x786755b3,
    0x3a97174e, 0x4c7618d3, 0x975379af, 0xe1b27632, 0x2118bb57,
    0x57f9b4ca, 0x8cdcd5b6, 0xfa3dda2b, 0x0c894e7d, 0x7a6841e0,
    0xa14d209c, 0xd7ac2f01, 0x1706e264, 0x61e7edf9, 0xbac28c85,
    0xcc238318, 0x56aba528, 0x204aaab5, 0xfb6fcbc9, 0x8d8ec454,
    0x4d240931, 0x3bc506ac, 0xe0e067d0, 0x9601684d, 0x60b5fc1b,
    0x1654f386, 0xcd7192fa, 0xbb909d67, 0x7b3a5002, 0x0ddb5f9f,
    0xd6fe3ee3, 0xa01f317e, 0x1318cac2, 0x65f9c55f, 0xbedca423,
    0xc83dabbe, 0x089766db, 0x7e766946, 0xa553083a, 0xd3b207a7,
    0x250693f1, 0x53e79c6c, 0x88c2fd10, 0xfe23f28d, 0x3e893fe8,
    0x48683075, 0x934d5109, 0xe5ac5e94, 0x7f2478a4, 0x09c57739,
    0xd2e01645, 0xa40119d8, 0x64abd4bd, 0x124adb20, 0xc96fba5c,
    0xbf8eb5c1, 0x493a2197, 0x3fdb2e0a, 0xe4fe4f76, 0x921f40eb,
    0x52b58d8e, 0x24548213, 0xff71e36f, 0x8990ecf2, 0xcb60ae0f,
    0xbd81a192, 0x66a4c0ee, 0x1045cf73, 0xd0ef0216, 0xa60e0d8b,
    0x7d2b6cf7, 0x0bca636a, 0xfd7ef73c, 0x8b9ff8a1, 0x50ba99dd,
    0x265b9640, 0xe6f15b25, 0x901054b8, 0x4b3535c4, 0x3dd43a59,
    0xa75c1c69, 0xd1bd13f4, 0x0a987288, 0x7c797d15, 0xbcd3b070,
    0xca32bfed, 0x1117de91, 0x67f6d10c, 0x9142455a, 0xe7a34ac7,
    0x3c862bbb, 0x4a672426, 0x8acde943, 0xfc2ce6de, 0x270987a2,
    0x51e8883f},
   {0x00000000, 0xe8dbfbb9, 0x91b186a8, 0x796a7d11, 0x63657c8a,
    0x8bbe8733, 0xf2d4fa22, 0x1a0f019b, 0x87cc89cf, 0x6f177276,
    0x167d0f67, 0xfea6f4de, 0xe4a9f545, 0x0c720efc, 0x751873ed,
    0x9dc38854, 0x4f9f6244, 0xa74499fd, 0xde2ee4ec, 0x36f51f55,
    0x2cfa1ece, 0xc421e577, 0xbd4b9866, 0x559063df, 0xc853eb8b,
    0x20881032, 0x59e26d23, 0xb139969a, 0xab369701, 0x43ed6cb8,
    0x3a8711a9, 0xd25cea10, 0x9e3ec588, 0x76e53e31, 0x0f8f4320,
    0xe754b899, 0xfd5bb902, 0x158042bb, 0x6cea3faa, 0x8431c413,
    0x19f24c47, 0xf129b7fe, 0x8843caef, 0x60983156, 0x7a9730cd,
    0x924ccb74, 0xeb26b665, 0x03fd4ddc, 0xd1a1a7cc, 0x397a5c75,
    0x40102164, 0xa8cbdadd, 0xb2c4db46, 0x5a1f20ff, 0x23755dee,
    0xcbaea657, 0x566d2e03, 0xbeb6d5ba, 0xc7dca8ab, 0x2f075312,
    0x35085289, 0xddd3a930, 0xa4b9d421, 0x4c622f98, 0x7d7bfbca,
    0x95a00073, 0xecca7d62, 0x041186db, 0x1e1e8740, 0xf6c57cf9,
    0x8faf01e8, 0x6774fa51, 0xfab77205, 0x126c89bc, 0x6b06f4ad,
    0x83dd0f14, 0x99d20e8f, 0x7109f536, 0x08638827, 0xe0b8739e,
    0x32e4998e, 0xda3f6237, 0xa3551f26, 0x4b8ee49f, 0x5181e504,
    0xb95a1ebd, 0xc03063ac, 0x28eb9815, 0xb5281041, 0x5df3ebf8,
    0x249996e9, 0xcc426d50, 0xd64d6ccb, 0x3e969772, 0x47fcea63,
    0xaf2711da, 0xe3453e42, 0x0b9ec5fb, 0x72f4b8ea, 0x9a2f4353,
    0x802042c8, 0x68fbb971, 0x1191c460, 0xf94a3fd9, 0x6489b78d,
    0x8c524c34, 0xf5383125, 0x1de3ca9c, 0x07eccb07, 0xef3730be,
    0x965d4daf, 0x7e86b616, 0xacda5c06, 0x4401a7bf, 0x3d6bdaae,
    0xd5b02117, 0xcfbf208c, 0x2764db35, 0x5e0ea624, 0xb6d55d9d,
    0x2b16d5c9, 0xc3cd2e70, 0xbaa75361, 0x527ca8d8, 0x4873a943,
    0xa0a852fa, 0xd9c22feb, 0x3119d452, 0xbbf0874e, 0x532b7cf7,
    0x2a4101e6, 0xc29afa5f, 0xd895fbc4, 0x304e007d, 0x49247d6c,
    0xa1ff86d5, 0x3c3c0e81, 0xd4e7f538, 0xad8d8829, 0x45567390,
    0x5f59720b, 0xb78289b2, 0xcee8f4a3, 0x26330f1a, 0xf46fe50a,
    0x1cb41eb3, 0x65de63a2, 0x8d05981b, 0x970a9980, 0x7fd16239,
    0x06bb1f28, 0xee60e491, 0x73a36cc5, 0x9b78977c, 0xe212ea6d,
    0x0ac911d4, 0x10c6104f, 0xf81debf6, 0x817796e7, 0x69ac6d5e,
    0x25ce42c6, 0xcd15b97f, 0xb47fc46e, 0x5ca43fd7, 0x46ab3e4c,
    0xae70c5f5, 0xd71ab8e4, 0x3fc1435d, 0xa202cb09, 0x4ad930b0,
    0x33b34da1, 0xdb68b618, 0xc167b783, 0x29bc4c3a, 0x50d6312b,
    0xb80dca92, 0x6a512082, 0x828adb3b, 0xfbe0a62a, 0x133b5d93,
    0x09345c08, 0xe1efa7b1, 0x9885daa0, 0x705e2119, 0xed9da94d,
    0x054652f4, 0x7c2c2fe5, 0x94f7d45c, 0x8ef8d5c7, 0x66232e7e,
    0x1f49536f, 0xf792a8d6, 0xc68b7c84, 0x2e50873d, 0x573afa2c,
    0xbfe10195, 0xa5ee000e, 0x4d35fbb7, 0x345f86a6, 0xdc847d1f,
    0x4147f54b, 0xa99c0ef2, 0xd0f673e3, 0x382d885a, 0x222289c1,
    0xcaf97278, 0xb3930f69, 0x5b48f4d0, 0x89141ec0, 0x61cfe579,
    0x18a59868, 0xf07e63d1, 0xea71624a, 0x02aa99f3, 0x7bc0e4e2,
    0x931b1f5b, 0x0ed8970f, 0xe6036cb6, 0x9f6911a7, 0x77b2ea1e,
    0x6dbdeb85, 0x8566103c, 0xfc0c6d2d, 0x14d79694, 0x58b5b90c,
    0xb06e42b5, 0xc9043fa4, 0x21dfc41d, 0x3bd0c586, 0xd30b3e3f,
    0xaa61432e, 0x42bab897, 0xdf7930c3, 0x37a2cb7a, 0x4ec8b66b,
    0xa6134dd2, 0xbc1c4c49, 0x54c7b7f0, 0x2dadcae1, 0xc5763158,
    0x172adb48, 0xfff120f1, 0x869b5de0, 0x6e40a659, 0x744fa7c2,
    0x9c945c7b, 0xe5fe216a, 0x0d25dad3, 0x90e65287, 0x783da93e,
    0x0157d42f, 0xe98c2f96, 0xf3832e0d, 0x1b58d5b4, 0x6232a8a5,
    0x8ae9531c},
   {0x00000000, 0x919168ae, 0x6325a087, 0xf2b4c829, 0x874c31d4,
    0x16dd597a, 0xe4699153, 0x75f8f9fd, 0x4f9f1373, 0xde0e7bdd,
    0x2cbab3f4, 0xbd2bdb5a, 0xc8d322a7, 0x59424a09, 0xabf68220,
    0x3a67ea8e, 0x9e3e27e6, 0x0faf4f48, 0xfd1b8761, 0x6c8aefcf,
    0x19721632, 0x88e37e9c, 0x7a57b6b5, 0xebc6de1b, 0xd1a13495,
    0x40305c3b, 0xb2849412, 0x2315fcbc, 0x56ed0541, 0xc77c6def,
    0x35c8a5c6, 0xa459cd68, 0x7d7b3f17, 0xecea57b9, 0x1e5e9f90,
    0x8fcff73e, 0xfa370ec3, 0x6ba6666d, 0x9912ae44, 0x0883c6ea,
    0x32e42c64, 0xa37544ca, 0x51c18ce3, 0xc050e44d, 0xb5a81db0,
    0x2439751e, 0xd68dbd37, 0x471cd599, 0xe34518f1, 0x72d4705f,
    0x8060b876, 0x11f1d0d8, 0x64092925, 0xf598418b, 0x072c89a2,
    0x96bde10c, 0xacda0b82, 0x3d4b632c, 0xcfffab05, 0x5e6ec3ab,
    0x2b963a56, 0xba0752f8, 0x48b39ad1, 0xd922f27f, 0xfaf67e2e,
    0x6b671680, 0x99d3dea9, 0x0842b607, 0x7dba4ffa, 0xec2b2754,
    0x1e9fef7d, 0x8f0e87d3, 0xb5696d5d, 0x24f805f3, 0xd64ccdda,
    0x47dda574, 0x32255c89, 0xa3b43427, 0x5100fc0e, 0xc09194a0,
    0x64c859c8, 0xf5593166, 0x07edf94f, 0x967c91e1, 0xe384681c,
    0x721500b2, 0x80a1c89b, 0x1130a035, 0x2b574abb, 0xbac62215,
    0x4872ea3c, 0xd9e38292, 0xac1b7b6f, 0x3d8a13c1, 0xcf3edbe8,
    0x5eafb346, 0x878d4139, 0x161c2997, 0xe4a8e1be, 0x75398910,
    0x00c170ed, 0x91501843, 0x63e4d06a, 0xf275b8c4, 0xc812524a,
    0x59833ae4, 0xab37f2cd, 0x3aa69a63, 0x4f5e639e, 0xdecf0b30,
    0x2c7bc319, 0xbdeaabb7, 0x19b366df, 0x88220e71, 0x7a96c658,
    0xeb07aef6, 0x9eff570b, 0x0f6e3fa5, 0xfddaf78c, 0x6c4b9f22,
    0x562c75ac, 0xc7bd1d02, 0x3509d52b, 0xa498bd85, 0xd1604478,
    0x40f12cd6, 0xb245e4ff, 0x23d48c51, 0xf4edfd5c, 0x657c95f2,
    0x97c85ddb, 0x06593575, 0x73a1cc88, 0xe230a426, 0x10846c0f,
    0x811504a1, 0xbb72ee2f, 0x2ae38681, 0xd8574ea8, 0x49c62606,
    0x3c3edffb, 0xadafb755, 0x5f1b7f7c, 0xce8a17d2, 0x6ad3daba,
    0xfb42b214, 0x09f67a3d, 0x98671293, 0xed9feb6e, 0x7c0e83c0,
    0x8eba4be9, 0x1f2b2347, 0x254cc9c9, 0xb4dda167, 0x4669694e,
    0xd7f801e0, 0xa200f81d, 0x339190b3, 0xc125589a, 0x50b43034,
    0x8996c24b, 0x1807aae5, 0xeab362cc, 0x7b220a62, 0x0edaf39f,
    0x9f4b9b31, 0x6dff5318, 0xfc6e3bb6, 0xc609d138, 0x5798b996,
    0xa52c71bf, 0x34bd1911, 0x4145e0ec, 0xd0d48842, 0x2260406b,
    0xb3f128c5, 0x17a8e5ad, 0x86398d03, 0x748d452a, 0xe51c2d84,
    0x90e4d479, 0x0175bcd7, 0xf3c174fe, 0x62501c50, 0x5837f6de,
    0xc9a69e70, 0x3b125659, 0xaa833ef7, 0xdf7bc70a, 0x4eeaafa4,
    0xbc5e678d, 0x2dcf0f23, 0x0e1b8372, 0x9f8aebdc, 0x6d3e23f5,
    0xfcaf4b5b, 0x8957b2a6, 0x18c6da08, 0xea721221, 0x7be37a8f,
    0x41849001, 0xd015f8af, 0x22a13086, 0xb3305828, 0xc6c8a1d5,
    0x5759c97b, 0xa5ed0152, 0x347c69fc, 0x9025a494, 0x01b4cc3a,
    0xf3000413, 0x62916cbd, 0x17699540, 0x86f8fdee, 0x744c35c7,
    0xe5dd5d69, 0xdfbab7e7, 0x4e2bdf49, 0xbc9f1760, 0x2d0e7fce,
    0x58f68633, 0xc967ee9d, 0x3bd326b4, 0xaa424e1a, 0x7360bc65,
    0xe2f1d4cb, 0x10451ce2, 0x81d4744c, 0xf42c8db1, 0x65bde51f,
    0x97092d36, 0x06984598, 0x3cffaf16, 0xad6ec7b8, 0x5fda0f91,
    0xce4b673f, 0xbbb39ec2, 0x2a22f66c, 0xd8963e45, 0x490756eb,
    0xed5e9b83, 0x7ccff32d, 0x8e7b3b04, 0x1fea53aa, 0x6a12aa57,
    0xfb83c2f9, 0x09370ad0, 0x98a6627e, 0xa2c188f0, 0x3350e05e,
    0xc1e42877, 0x507540d9, 0x258db924, 0xb41cd18a, 0x46a819a3,
    0xd739710d}};

#endif

#endif

#if N == 5

#if W == 8

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0xaf449247, 0x85f822cf, 0x2abcb088, 0xd08143df,
    0x7fc5d198, 0x55796110, 0xfa3df357, 0x7a7381ff, 0xd53713b8,
    0xff8ba330, 0x50cf3177, 0xaaf2c220, 0x05b65067, 0x2f0ae0ef,
    0x804e72a8, 0xf4e703fe, 0x5ba391b9, 0x711f2131, 0xde5bb376,
    0x24664021, 0x8b22d266, 0xa19e62ee, 0x0edaf0a9, 0x8e948201,
    0x21d01046, 0x0b6ca0ce, 0xa4283289, 0x5e15c1de, 0xf1515399,
    0xdbede311, 0x74a97156, 0x32bf01bd, 0x9dfb93fa, 0xb7472372,
    0x1803b135, 0xe23e4262, 0x4d7ad025, 0x67c660ad, 0xc882f2ea,
    0x48cc8042, 0xe7881205, 0xcd34a28d, 0x627030ca, 0x984dc39d,
    0x370951da, 0x1db5e152, 0xb2f17315, 0xc6580243, 0x691c9004,
    0x43a0208c, 0xece4b2cb, 0x16d9419c, 0xb99dd3db, 0x93216353,
    0x3c65f114, 0xbc2b83bc, 0x136f11fb, 0x39d3a173, 0x96973334,
    0x6caac063, 0xc3ee5224, 0xe952e2ac, 0x461670eb, 0x657e037a,
    0xca3a913d, 0xe08621b5, 0x4fc2b3f2, 0xb5ff40a5, 0x1abbd2e2,
    0x3007626a, 0x9f43f02d, 0x1f0d8285, 0xb04910c2, 0x9af5a04a,
    0x35b1320d, 0xcf8cc15a, 0x60c8531d, 0x4a74e395, 0xe53071d2,
    0x91990084, 0x3edd92c3, 0x1461224b, 0xbb25b00c, 0x4118435b,
    0xee5cd11c, 0xc4e06194, 0x6ba4f3d3, 0xebea817b, 0x44ae133c,
    0x6e12a3b4, 0xc15631f3, 0x3b6bc2a4, 0x942f50e3, 0xbe93e06b,
    0x11d7722c, 0x57c102c7, 0xf8859080, 0xd2392008, 0x7d7db24f,
    0x87404118, 0x2804d35f, 0x02b863d7, 0xadfcf190, 0x2db28338,
    0x82f6117f, 0xa84aa1f7, 0x070e33b0, 0xfd33c0e7, 0x527752a0,
    0x78cbe228, 0xd78f706f, 0xa3260139, 0x0c62937e, 0x26de23f6,
    0x899ab1b1, 0x73a742e6, 0xdce3d0a1, 0xf65f6029, 0x591bf26e,
    0xd95580c6, 0x76111281, 0x5cada209, 0xf3e9304e, 0x09d4c319,
    0xa690515e, 0x8c2ce1d6, 0x23687391, 0xcafc06f4, 0x65b894b3,
    0x4f04243b, 0xe040b67c, 0x1a7d452b, 0xb539d76c, 0x9f8567e4,
    0x30c1f5a3, 0xb08f870b, 0x1fcb154c, 0x3577a5c4, 0x9a333783,
    0x600ec4d4, 0xcf4a5693, 0xe5f6e61b, 0x4ab2745c, 0x3e1b050a,
    0x915f974d, 0xbbe327c5, 0x14a7b582, 0xee9a46d5, 0x41ded492,
    0x6b62641a, 0xc426f65d, 0x446884f5, 0xeb2c16b2, 0xc190a63a,
    0x6ed4347d, 0x94e9c72a, 0x3bad556d, 0x1111e5e5, 0xbe5577a2,
    0xf8430749, 0x5707950e, 0x7dbb2586, 0xd2ffb7c1, 0x28c24496,
    0x8786d6d1, 0xad3a6659, 0x027ef41e, 0x823086b6, 0x2d7414f1,
    0x07c8a479, 0xa88c363e, 0x52b1c569, 0xfdf5572e, 0xd749e7a6,
    0x780d75e1, 0x0ca404b7, 0xa3e096f0, 0x895c2678, 0x2618b43f,
    0xdc254768, 0x7361d52f, 0x59dd65a7, 0xf699f7e0, 0x76d78548,
    0xd993170f, 0xf32fa787, 0x5c6b35c0, 0xa656c697, 0x091254d0,
    0x23aee458, 0x8cea761f, 0xaf82058e, 0x00c697c9, 0x2a7a2741,
    0x853eb506, 0x7f034651, 0xd047d416, 0xfafb649e, 0x55bff6d9,
    0xd5f18471, 0x7ab51636, 0x5009a6be, 0xff4d34f9, 0x0570c7ae,
    0xaa3455e9, 0x8088e561, 0x2fcc7726, 0x5b650670, 0xf4219437,
    0xde9d24bf, 0x71d9b6f8, 0x8be445af, 0x24a0d7e8, 0x0e1c6760,
    0xa158f527, 0x2116878f, 0x8e5215c8, 0xa4eea540, 0x0baa3707,
    0xf197c450, 0x5ed35617, 0x746fe69f, 0xdb2b74d8, 0x9d3d0433,
    0x32799674, 0x18c526fc, 0xb781b4bb, 0x4dbc47ec, 0xe2f8d5ab,
    0xc8446523, 0x6700f764, 0xe74e85cc, 0x480a178b, 0x62b6a703,
    0xcdf23544, 0x37cfc613, 0x988b5454, 0xb237e4dc, 0x1d73769b,
    0x69da07cd, 0xc69e958a, 0xec222502, 0x4366b745, 0xb95b4412,
    0x161fd655, 0x3ca366dd, 0x93e7f49a, 0x13a98632, 0xbced1475,
    0x9651a4fd, 0x391536ba, 0xc328c5ed, 0x6c6c57aa, 0x46d0e722,
    0xe9947565},
   {0x00000000, 0x4e890ba9, 0x9d121752, 0xd39b1cfb, 0xe15528e5,
    0xafdc234c, 0x7c473fb7, 0x32ce341e, 0x19db578b, 0x57525c22,
    0x84c940d9, 0xca404b70, 0xf88e7f6e, 0xb60774c7, 0x659c683c,
    0x2b156395, 0x33b6af16, 0x7d3fa4bf, 0xaea4b844, 0xe02db3ed,
    0xd2e387f3, 0x9c6a8c5a, 0x4ff190a1, 0x01789b08, 0x2a6df89d,
    0x64e4f334, 0xb77fefcf, 0xf9f6e466, 0xcb38d078, 0x85b1dbd1,
    0x562ac72a, 0x18a3cc83, 0x676d5e2c, 0x29e45585, 0xfa7f497e,
    0xb4f642d7, 0x863876c9, 0xc8b17d60, 0x1b2a619b, 0x55a36a32,
    0x7eb609a7, 0x303f020e, 0xe3a41ef5, 0xad2d155c, 0x9fe32142,
    0xd16a2aeb, 0x02f13610, 0x4c783db9, 0x54dbf13a, 0x1a52fa93,
    0xc9c9e668, 0x8740edc1, 0xb58ed9df, 0xfb07d276, 0x289cce8d,
    0x6615c524, 0x4d00a6b1, 0x0389ad18, 0xd012b1e3, 0x9e9bba4a,
    0xac558e54, 0xe2dc85fd, 0x31479906, 0x7fce92af, 0xcedabc58,
    0x8053b7f1, 0x53c8ab0a, 0x1d41a0a3, 0x2f8f94bd, 0x61069f14,
    0xb29d83ef, 0xfc148846, 0xd701ebd3, 0x9988e07a, 0x4a13fc81,
    0x049af728, 0x3654c336, 0x78ddc89f, 0xab46d464, 0xe5cfdfcd,
    0xfd6c134e, 0xb3e518e7, 0x607e041c, 0x2ef70fb5, 0x1c393bab,
    0x52b03002, 0x812b2cf9, 0xcfa22750, 0xe4b744c5, 0xaa3e4f6c,
    0x79a55397, 0x372c583e, 0x05e26c20, 0x4b6b6789, 0x98f07b72,
    0xd67970db, 0xa9b7e274, 0xe73ee9dd, 0x34a5f526, 0x7a2cfe8f,
    0x48e2ca91, 0x066bc138, 0xd5f0ddc3, 0x9b79d66a, 0xb06cb5ff,
    0xfee5be56, 0x2d7ea2ad, 0x63f7a904, 0x51399d1a, 0x1fb096b3,
    0xcc2b8a48, 0x82a281e1, 0x9a014d62, 0xd48846cb, 0x07135a30,
    0x499a5199, 0x7b546587, 0x35dd6e2e, 0xe64672d5, 0xa8cf797c,
    0x83da1ae9, 0xcd531140, 0x1ec80dbb, 0x50410612, 0x628f320c,
    0x2c0639a5, 0xff9d255e, 0xb1142ef7, 0x46c47ef1, 0x084d7558,
    0xdbd669a3, 0x955f620a, 0xa7915614, 0xe9185dbd, 0x3a834146,
    0x740a4aef, 0x5f1f297a, 0x119622d3, 0xc20d3e28, 0x8c843581,
    0xbe4a019f, 0xf0c30a36, 0x235816cd, 0x6dd11d64, 0x7572d1e7,
    0x3bfbda4e, 0xe860c6b5, 0xa6e9cd1c, 0x9427f902, 0xdaaef2ab,
    0x0935ee50, 0x47bce5f9, 0x6ca9866c, 0x22208dc5, 0xf1bb913e,
    0xbf329a97, 0x8dfcae89, 0xc375a520, 0x10eeb9db, 0x5e67b272,
    0x21a920dd, 0x6f202b74, 0xbcbb378f, 0xf2323c26, 0xc0fc0838,
    0x8e750391, 0x5dee1f6a, 0x136714c3, 0x38727756, 0x76fb7cff,
    0xa5606004, 0xebe96bad, 0xd9275fb3, 0x97ae541a, 0x443548e1,
    0x0abc4348, 0x121f8fcb, 0x5c968462, 0x8f0d9899, 0xc1849330,
    0xf34aa72e, 0xbdc3ac87, 0x6e58b07c, 0x20d1bbd5, 0x0bc4d840,
    0x454dd3e9, 0x96d6cf12, 0xd85fc4bb, 0xea91f0a5, 0xa418fb0c,
    0x7783e7f7, 0x390aec5e, 0x881ec2a9, 0xc697c900, 0x150cd5fb,
    0x5b85de52, 0x694bea4c, 0x27c2e1e5, 0xf459fd1e, 0xbad0f6b7,
    0x91c59522, 0xdf4c9e8b, 0x0cd78270, 0x425e89d9, 0x7090bdc7,
    0x3e19b66e, 0xed82aa95, 0xa30ba13c, 0xbba86dbf, 0xf5216616,
    0x26ba7aed, 0x68337144, 0x5afd455a, 0x14744ef3, 0xc7ef5208,
    0x896659a1, 0xa2733a34, 0xecfa319d, 0x3f612d66, 0x71e826cf,
    0x432612d1, 0x0daf1978, 0xde340583, 0x90bd0e2a, 0xef739c85,
    0xa1fa972c, 0x72618bd7, 0x3ce8807e, 0x0e26b460, 0x40afbfc9,
    0x9334a332, 0xddbda89b, 0xf6a8cb0e, 0xb821c0a7, 0x6bbadc5c,
    0x2533d7f5, 0x17fde3eb, 0x5974e842, 0x8aeff4b9, 0xc466ff10,
    0xdcc53393, 0x924c383a, 0x41d724c1, 0x0f5e2f68, 0x3d901b76,
    0x731910df, 0xa0820c24, 0xee0b078d, 0xc51e6418, 0x8b976fb1,
    0x580c734a, 0x168578e3, 0x244b4cfd, 0x6ac24754, 0xb9595baf,
    0xf7d05006},
   {0x00000000, 0x8d88fde2, 0xc060fd85, 0x4de80067, 0x5bb0fd4b,
    0xd63800a9, 0x9bd000ce, 0x1658fd2c, 0xb761fa96, 0x3ae90774,
    0x77010713, 0xfa89faf1, 0xecd107dd, 0x6159fa3f, 0x2cb1fa58,
    0xa13907ba, 0xb5b2f36d, 0x383a0e8f, 0x75d20ee8, 0xf85af30a,
    0xee020e26, 0x638af3c4, 0x2e62f3a3, 0xa3ea0e41, 0x02d309fb,
    0x8f5bf419, 0xc2b3f47e, 0x4f3b099c, 0x5963f4b0, 0xd4eb0952,
    0x99030935, 0x148bf4d7, 0xb014e09b, 0x3d9c1d79, 0x70741d1e,
    0xfdfce0fc, 0xeba41dd0, 0x662ce032, 0x2bc4e055, 0xa64c1db7,
    0x07751a0d, 0x8afde7ef, 0xc715e788, 0x4a9d1a6a, 0x5cc5e746,
    0xd14d1aa4, 0x9ca51ac3, 0x112de721, 0x05a613f6, 0x882eee14,
    0xc5c6ee73, 0x484e1391, 0x5e16eebd, 0xd39e135f, 0x9e761338,
    0x13feeeda, 0xb2c7e960, 0x3f4f1482, 0x72a714e5, 0xff2fe907,
    0xe977142b, 0x64ffe9c9, 0x2917e9ae, 0xa49f144c, 0xbb58c777,
    0x36d03a95, 0x7b383af2, 0xf6b0c710, 0xe0e83a3c, 0x6d60c7de,
    0x2088c7b9, 0xad003a5b, 0x0c393de1, 0x81b1c003, 0xcc59c064,
    0x41d13d86, 0x5789c0aa, 0xda013d48, 0x97e93d2f, 0x1a61c0cd,
    0x0eea341a, 0x8362c9f8, 0xce8ac99f, 0x4302347d, 0x555ac951,
    0xd8d234b3, 0x953a34d4, 0x18b2c936, 0xb98bce8c, 0x3403336e,
    0x79eb3309, 0xf463ceeb, 0xe23b33c7, 0x6fb3ce25, 0x225bce42,
    0xafd333a0, 0x0b4c27ec, 0x86c4da0e, 0xcb2cda69, 0x46a4278b,
    0x50fcdaa7, 0xdd742745, 0x909c2722, 0x1d14dac0, 0xbc2ddd7a,
    0x31a52098, 0x7c4d20ff, 0xf1c5dd1d, 0xe79d2031, 0x6a15ddd3,
    0x27fdddb4, 0xaa752056, 0xbefed481, 0x33762963, 0x7e9e2904,
    0xf316d4e6, 0xe54e29ca, 0x68c6d428, 0x252ed44f, 0xa8a629ad,
    0x099f2e17, 0x8417d3f5, 0xc9ffd392, 0x44772e70, 0x522fd35c,
    0xdfa72ebe, 0x924f2ed9, 0x1fc7d33b, 0xadc088af, 0x2048754d,
    0x6da0752a, 0xe02888c8, 0xf67075e4, 0x7bf88806, 0x36108861,
    0xbb987583, 0x1aa17239, 0x97298fdb, 0xdac18fbc, 0x5749725e,
    0x41118f72, 0xcc997290, 0x817172f7, 0x0cf98f15, 0x18727bc2,
    0x95fa8620, 0xd8128647, 0x559a7ba5, 0x43c28689, 0xce4a7b6b,
    0x83a27b0c, 0x0e2a86ee, 0xaf138154, 0x229b7cb6, 0x6f737cd1,
    0xe2fb8133, 0xf4a37c1f, 0x792b81fd, 0x34c3819a, 0xb94b7c78,
    0x1dd46834, 0x905c95d6, 0xddb495b1, 0x503c6853, 0x4664957f,
    0xcbec689d, 0x860468fa, 0x0b8c9518, 0xaab592a2, 0x273d6f40,
    0x6ad56f27, 0xe75d92c5, 0xf1056fe9, 0x7c8d920b, 0x3165926c,
    0xbced6f8e, 0xa8669b59, 0x25ee66bb, 0x680666dc, 0xe58e9b3e,
    0xf3d66612, 0x7e5e9bf0, 0x33b69b97, 0xbe3e6675, 0x1f0761cf,
    0x928f9c2d, 0xdf679c4a, 0x52ef61a8, 0x44b79c84, 0xc93f6166,
    0x84d76101, 0x095f9ce3, 0x16984fd8, 0x9b10b23a, 0xd6f8b25d,
    0x5b704fbf, 0x4d28b293, 0xc0a04f71, 0x8d484f16, 0x00c0b2f4,
    0xa1f9b54e, 0x2c7148ac, 0x619948cb, 0xec11b529, 0xfa494805,
    0x77c1b5e7, 0x3a29b580, 0xb7a14862, 0xa32abcb5, 0x2ea24157,
    0x634a4130, 0xeec2bcd2, 0xf89a41fe, 0x7512bc1c, 0x38fabc7b,
    0xb5724199, 0x144b4623, 0x99c3bbc1, 0xd42bbba6, 0x59a34644,
    0x4ffbbb68, 0xc273468a, 0x8f9b46ed, 0x0213bb0f, 0xa68caf43,
    0x2b0452a1, 0x66ec52c6, 0xeb64af24, 0xfd3c5208, 0x70b4afea,
    0x3d5caf8d, 0xb0d4526f, 0x11ed55d5, 0x9c65a837, 0xd18da850,
    0x5c0555b2, 0x4a5da89e, 0xc7d5557c, 0x8a3d551b, 0x07b5a8f9,
    0x133e5c2e, 0x9eb6a1cc, 0xd35ea1ab, 0x5ed65c49, 0x488ea165,
    0xc5065c87, 0x88ee5ce0, 0x0566a102, 0xa45fa6b8, 0x29d75b5a,
    0x643f5b3d, 0xe9b7a6df, 0xffef5bf3, 0x7267a611, 0x3f8fa676,
    0xb2075b94},
   {0x00000000, 0x80f0171f, 0xda91287f, 0x5a613f60, 0x6e5356bf,
    0xeea341a0, 0xb4c27ec0, 0x343269df, 0xdca6ad7e, 0x5c56ba61,
    0x06378501, 0x86c7921e, 0xb2f5fbc1, 0x3205ecde, 0x6864d3be,
    0xe894c4a1, 0x623c5cbd, 0xe2cc4ba2, 0xb8ad74c2, 0x385d63dd,
    0x0c6f0a02, 0x8c9f1d1d, 0xd6fe227d, 0x560e3562, 0xbe9af1c3,
    0x3e6ae6dc, 0x640bd9bc, 0xe4fbcea3, 0xd0c9a77c, 0x5039b063,
    0x0a588f03, 0x8aa8981c, 0xc478b97a, 0x4488ae65, 0x1ee99105,
    0x9e19861a, 0xaa2befc5, 0x2adbf8da, 0x70bac7ba, 0xf04ad0a5,
    0x18de1404, 0x982e031b, 0xc24f3c7b, 0x42bf2b64, 0x768d42bb,
    0xf67d55a4, 0xac1c6ac4, 0x2cec7ddb, 0xa644e5c7, 0x26b4f2d8,
    0x7cd5cdb8, 0xfc25daa7, 0xc817b378, 0x48e7a467, 0x12869b07,
    0x92768c18, 0x7ae248b9, 0xfa125fa6, 0xa07360c6, 0x208377d9,
    0x14b11e06, 0x94410919, 0xce203679, 0x4ed02166, 0x538074b5,
    0xd37063aa, 0x89115cca, 0x09e14bd5, 0x3dd3220a, 0xbd233515,
    0xe7420a75, 0x67b21d6a, 0x8f26d9cb, 0x0fd6ced4, 0x55b7f1b4,
    0xd547e6ab, 0xe1758f74, 0x6185986b, 0x3be4a70b, 0xbb14b014,
    0x31bc2808, 0xb14c3f17, 0xeb2d0077, 0x6bdd1768, 0x5fef7eb7,
    0xdf1f69a8, 0x857e56c8, 0x058e41d7, 0xed1a8576, 0x6dea9269,
    0x378bad09, 0xb77bba16, 0x8349d3c9, 0x03b9c4d6, 0x59d8fbb6,
    0xd928eca9, 0x97f8cdcf, 0x1708dad0, 0x4d69e5b0, 0xcd99f2af,
    0xf9ab9b70, 0x795b8c6f, 0x233ab30f, 0xa3caa410, 0x4b5e60b1,
    0xcbae77ae, 0x91cf48ce, 0x113f5fd1, 0x250d360e, 0xa5fd2111,
    0xff9c1e71, 0x7f6c096e, 0xf5c49172, 0x7534866d, 0x2f55b90d,
    0xafa5ae12, 0x9b97c7cd, 0x1b67d0d2, 0x4106efb2, 0xc1f6f8ad,
    0x29623c0c, 0xa9922b13, 0xf3f31473, 0x7303036c, 0x47316ab3,
    0xc7c17dac, 0x9da042cc, 0x1d5055d3, 0xa700e96a, 0x27f0fe75,
    0x7d91c115, 0xfd61d60a, 0xc953bfd5, 0x49a3a8ca, 0x13c297aa,
    0x933280b5, 0x7ba64414, 0xfb56530b, 0xa1376c6b, 0x21c77b74,
    0x15f512ab, 0x950505b4, 0xcf643ad4, 0x4f942dcb, 0xc53cb5d7,
    0x45cca2c8, 0x1fad9da8, 0x9f5d8ab7, 0xab6fe368, 0x2b9ff477,
    0x71fecb17, 0xf10edc08, 0x199a18a9, 0x996a0fb6, 0xc30b30d6,
    0x43fb27c9, 0x77c94e16, 0xf7395909, 0xad586669, 0x2da87176,
    0x63785010, 0xe388470f, 0xb9e9786f, 0x39196f70, 0x0d2b06af,
    0x8ddb11b0, 0xd7ba2ed0, 0x574a39cf, 0xbfdefd6e, 0x3f2eea71,
    0x654fd511, 0xe5bfc20e, 0xd18dabd1, 0x517dbcce, 0x0b1c83ae,
    0x8bec94b1, 0x01440cad, 0x81b41bb2, 0xdbd524d2, 0x5b2533cd,
    0x6f175a12, 0xefe74d0d, 0xb586726d, 0x35766572, 0xdde2a1d3,
    0x5d12b6cc, 0x077389ac, 0x87839eb3, 0xb3b1f76c, 0x3341e073,
    0x6920df13, 0xe9d0c80c, 0xf4809ddf, 0x74708ac0, 0x2e11b5a0,
    0xaee1a2bf, 0x9ad3cb60, 0x1a23dc7f, 0x4042e31f, 0xc0b2f400,
    0x282630a1, 0xa8d627be, 0xf2b718de, 0x72470fc1, 0x4675661e,
    0xc6857101, 0x9ce44e61, 0x1c14597e, 0x96bcc162, 0x164cd67d,
    0x4c2de91d, 0xccddfe02, 0xf8ef97dd, 0x781f80c2, 0x227ebfa2,
    0xa28ea8bd, 0x4a1a6c1c, 0xcaea7b03, 0x908b4463, 0x107b537c,
    0x24493aa3, 0xa4b92dbc, 0xfed812dc, 0x7e2805c3, 0x30f824a5,
    0xb00833ba, 0xea690cda, 0x6a991bc5, 0x5eab721a, 0xde5b6505,
    0x843a5a65, 0x04ca4d7a, 0xec5e89db, 0x6cae9ec4, 0x36cfa1a4,
    0xb63fb6bb, 0x820ddf64, 0x02fdc87b, 0x589cf71b, 0xd86ce004,
    0x52c47818, 0xd2346f07, 0x88555067, 0x08a54778, 0x3c972ea7,
    0xbc6739b8, 0xe60606d8, 0x66f611c7, 0x8e62d566, 0x0e92c279,
    0x54f3fd19, 0xd403ea06, 0xe03183d9, 0x60c194c6, 0x3aa0aba6,
    0xba50bcb9},
   {0x00000000, 0x9570d495, 0xf190af6b, 0x64e07bfe, 0x38505897,
    0xad208c02, 0xc9c0f7fc, 0x5cb02369, 0x70a0b12e, 0xe5d065bb,
    0x81301e45, 0x1440cad0, 0x48f0e9b9, 0xdd803d2c, 0xb96046d2,
    0x2c109247, 0xe141625c, 0x7431b6c9, 0x10d1cd37, 0x85a119a2,
    0xd9113acb, 0x4c61ee5e, 0x288195a0, 0xbdf14135, 0x91e1d372,
    0x049107e7, 0x60717c19, 0xf501a88c, 0xa9b18be5, 0x3cc15f70,
    0x5821248e, 0xcd51f01b, 0x19f3c2f9, 0x8c83166c, 0xe8636d92,
    0x7d13b907, 0x21a39a6e, 0xb4d34efb, 0xd0333505, 0x4543e190,
    0x695373d7, 0xfc23a742, 0x98c3dcbc, 0x0db30829, 0x51032b40,
    0xc473ffd5, 0xa093842b, 0x35e350be, 0xf8b2a0a5, 0x6dc27430,
    0x09220fce, 0x9c52db5b, 0xc0e2f832, 0x55922ca7, 0x31725759,
    0xa40283cc, 0x8812118b, 0x1d62c51e, 0x7982bee0, 0xecf26a75,
    0xb042491c, 0x25329d89, 0x41d2e677, 0xd4a232e2, 0x33e785f2,
    0xa6975167, 0xc2772a99, 0x5707fe0c, 0x0bb7dd65, 0x9ec709f0,
    0xfa27720e, 0x6f57a69b, 0x434734dc, 0xd637e049, 0xb2d79bb7,
    0x27a74f22, 0x7b176c4b, 0xee67b8de, 0x8a87c320, 0x1ff717b5,
    0xd2a6e7ae, 0x47d6333b, 0x233648c5, 0xb6469c50, 0xeaf6bf39,
    0x7f866bac, 0x1b661052, 0x8e16c4c7, 0xa2065680, 0x37768215,
    0x5396f9eb, 0xc6e62d7e, 0x9a560e17, 0x0f26da82, 0x6bc6a17c,
    0xfeb675e9, 0x2a14470b, 0xbf64939e, 0xdb84e860, 0x4ef43cf5,
    0x12441f9c, 0x8734cb09, 0xe3d4b0f7, 0x76a46462, 0x5ab4f625,
    0xcfc422b0, 0xab24594e, 0x3e548ddb, 0x62e4aeb2, 0xf7947a27,
    0x937401d9, 0x0604d54c, 0xcb552557, 0x5e25f1c2, 0x3ac58a3c,
    0xafb55ea9, 0xf3057dc0, 0x6675a955, 0x0295d2ab, 0x97e5063e,
    0xbbf59479, 0x2e8540ec, 0x4a653b12, 0xdf15ef87, 0x83a5ccee,
    0x16d5187b, 0x72356385, 0xe745b710, 0x67cf0be4, 0xf2bfdf71,
    0x965fa48f, 0x032f701a, 0x5f9f5373, 0xcaef87e6, 0xae0ffc18,
    0x3b7f288d, 0x176fbaca, 0x821f6e5f, 0xe6ff15a1, 0x738fc134,
    0x2f3fe25d, 0xba4f36c8, 0xdeaf4d36, 0x4bdf99a3, 0x868e69b8,
    0x13febd2d, 0x771ec6d3, 0xe26e1246, 0xbede312f, 0x2baee5ba,
    0x4f4e9e44, 0xda3e4ad1, 0xf62ed896, 0x635e0c03, 0x07be77fd,
    0x92cea368, 0xce7e8001, 0x5b0e5494, 0x3fee2f6a, 0xaa9efbff,
    0x7e3cc91d, 0xeb4c1d88, 0x8fac6676, 0x1adcb2e3, 0x466c918a,
    0xd31c451f, 0xb7fc3ee1, 0x228cea74, 0x0e9c7833, 0x9becaca6,
    0xff0cd758, 0x6a7c03cd, 0x36cc20a4, 0xa3bcf431, 0xc75c8fcf,
    0x522c5b5a, 0x9f7dab41, 0x0a0d7fd4, 0x6eed042a, 0xfb9dd0bf,
    0xa72df3d6, 0x325d2743, 0x56bd5cbd, 0xc3cd8828, 0xefdd1a6f,
    0x7aadcefa, 0x1e4db504, 0x8b3d6191, 0xd78d42f8, 0x42fd966d,
    0x261ded93, 0xb36d3906, 0x54288e16, 0xc1585a83, 0xa5b8217d,
    0x30c8f5e8, 0x6c78d681, 0xf9080214, 0x9de879ea, 0x0898ad7f,
    0x24883f38, 0xb1f8ebad, 0xd5189053, 0x406844c6, 0x1cd867af,
    0x89a8b33a, 0xed48c8c4, 0x78381c51, 0xb569ec4a, 0x201938df,
    0x44f94321, 0xd18997b4, 0x8d39b4dd, 0x18496048, 0x7ca91bb6,
    0xe9d9cf23, 0xc5c95d64, 0x50b989f1, 0x3459f20f, 0xa129269a,
    0xfd9905f3, 0x68e9d166, 0x0c09aa98, 0x99797e0d, 0x4ddb4cef,
    0xd8ab987a, 0xbc4be384, 0x293b3711, 0x758b1478, 0xe0fbc0ed,
    0x841bbb13, 0x116b6f86, 0x3d7bfdc1, 0xa80b2954, 0xcceb52aa,
    0x599b863f, 0x052ba556, 0x905b71c3, 0xf4bb0a3d, 0x61cbdea8,
    0xac9a2eb3, 0x39eafa26, 0x5d0a81d8, 0xc87a554d, 0x94ca7624,
    0x01baa2b1, 0x655ad94f, 0xf02a0dda, 0xdc3a9f9d, 0x494a4b08,
    0x2daa30f6, 0xb8dae463, 0xe46ac70a, 0x711a139f, 0x15fa6861,
    0x808abcf4},
   {0x00000000, 0xcf9e17c8, 0x444d29d1, 0x8bd33e19, 0x889a53a2,
    0x4704446a, 0xccd77a73, 0x03496dbb, 0xca45a105, 0x05dbb6cd,
    0x8e0888d4, 0x41969f1c, 0x42dff2a7, 0x8d41e56f, 0x0692db76,
    0xc90cccbe, 0x4ffa444b, 0x80645383, 0x0bb76d9a, 0xc4297a52,
    0xc76017e9, 0x08fe0021, 0x832d3e38, 0x4cb329f0, 0x85bfe54e,
    0x4a21f286, 0xc1f2cc9f, 0x0e6cdb57, 0x0d25b6ec, 0xc2bba124,
    0x49689f3d, 0x86f688f5, 0x9ff48896, 0x506a9f5e, 0xdbb9a147,
    0x1427b68f, 0x176edb34, 0xd8f0ccfc, 0x5323f2e5, 0x9cbde52d,
    0x55b12993, 0x9a2f3e5b, 0x11fc0042, 0xde62178a, 0xdd2b7a31,
    0x12b56df9, 0x996653e0, 0x56f84428, 0xd00eccdd, 0x1f90db15,
    0x9443e50c, 0x5bddf2c4, 0x58949f7f, 0x970a88b7, 0x1cd9b6ae,
    0xd347a166, 0x1a4b6dd8, 0xd5d57a10, 0x5e064409, 0x919853c1,
    0x92d13e7a, 0x5d4f29b2, 0xd69c17ab, 0x19020063, 0xe498176d,
    0x2b0600a5, 0xa0d53ebc, 0x6f4b2974, 0x6c0244cf, 0xa39c5307,
    0x284f6d1e, 0xe7d17ad6, 0x2eddb668, 0xe143a1a0, 0x6a909fb9,
    0xa50e8871, 0xa647e5ca, 0x69d9f202, 0xe20acc1b, 0x2d94dbd3,
    0xab625326, 0x64fc44ee, 0xef2f7af7, 0x20b16d3f, 0x23f80084,
    0xec66174c, 0x67b52955, 0xa82b3e9d, 0x6127f223, 0xaeb9e5eb,
    0x256adbf2, 0xeaf4cc3a, 0xe9bda181, 0x2623b649, 0xadf08850,
    0x626e9f98, 0x7b6c9ffb, 0xb4f28833, 0x3f21b62a, 0xf0bfa1e2,
    0xf3f6cc59, 0x3c68db91, 0xb7bbe588, 0x7825f240, 0xb1293efe,
    0x7eb72936, 0xf564172f, 0x3afa00e7, 0x39b36d5c, 0xf62d7a94,
    0x7dfe448d, 0xb2605345, 0x3496dbb0, 0xfb08cc78, 0x70dbf261,
    0xbf45e5a9, 0xbc0c8812, 0x73929fda, 0xf841a1c3, 0x37dfb60b,
    0xfed37ab5, 0x314d6d7d, 0xba9e5364, 0x750044ac, 0x76492917,
    0xb9d73edf, 0x320400c6, 0xfd9a170e, 0x1241289b, 0xdddf3f53,
    0x560c014a, 0x99921682, 0x9adb7b39, 0x55456cf1, 0xde9652e8,
    0x11084520, 0xd804899e, 0x179a9e56, 0x9c49a04f, 0x53d7b787,
    0x509eda3c, 0x9f00cdf4, 0x14d3f3ed, 0xdb4de425, 0x5dbb6cd0,
    0x92257b18, 0x19f64501, 0xd66852c9, 0xd5213f72, 0x1abf28ba,
    0x916c16a3, 0x5ef2016b, 0x97fecdd5, 0x5860da1d, 0xd3b3e404,
    0x1c2df3cc, 0x1f649e77, 0xd0fa89bf, 0x5b29b7a6, 0x94b7a06e,
    0x8db5a00d, 0x422bb7c5, 0xc9f889dc, 0x06669e14, 0x052ff3af,
    0xcab1e467, 0x4162da7e, 0x8efccdb6, 0x47f00108, 0x886e16c0,
    0x03bd28d9, 0xcc233f11, 0xcf6a52aa, 0x00f44562, 0x8b277b7b,
    0x44b96cb3, 0xc24fe446, 0x0dd1f38e, 0x8602cd97, 0x499cda5f,
    0x4ad5b7e4, 0x854ba02c, 0x0e989e35, 0xc10689fd, 0x080a4543,
    0xc794528b, 0x4c476c92, 0x83d97b5a, 0x809016e1, 0x4f0e0129,
    0xc4dd3f30, 0x0b4328f8, 0xf6d93ff6, 0x3947283e, 0xb2941627,
    0x7d0a01ef, 0x7e436c54, 0xb1dd7b9c, 0x3a0e4585, 0xf590524d,
    0x3c9c9ef3, 0xf302893b, 0x78d1b722, 0xb74fa0ea, 0xb406cd51,
    0x7b98da99, 0xf04be480, 0x3fd5f348, 0xb9237bbd, 0x76bd6c75,
    0xfd6e526c, 0x32f045a4, 0x31b9281f, 0xfe273fd7, 0x75f401ce,
    0xba6a1606, 0x7366dab8, 0xbcf8cd70, 0x372bf369, 0xf8b5e4a1,
    0xfbfc891a, 0x34629ed2, 0xbfb1a0cb, 0x702fb703, 0x692db760,
    0xa6b3a0a8, 0x2d609eb1, 0xe2fe8979, 0xe1b7e4c2, 0x2e29f30a,
    0xa5facd13, 0x6a64dadb, 0xa3681665, 0x6cf601ad, 0xe7253fb4,
    0x28bb287c, 0x2bf245c7, 0xe46c520f, 0x6fbf6c16, 0xa0217bde,
    0x26d7f32b, 0xe949e4e3, 0x629adafa, 0xad04cd32, 0xae4da089,
    0x61d3b741, 0xea008958, 0x259e9e90, 0xec92522e, 0x230c45e6,
    0xa8df7bff, 0x67416c37, 0x6408018c, 0xab961644, 0x2045285d,
    0xefdb3f95},
   {0x00000000, 0x24825136, 0x4904a26c, 0x6d86f35a, 0x920944d8,
    0xb68b15ee, 0xdb0de6b4, 0xff8fb782, 0xff638ff1, 0xdbe1dec7,
    0xb6672d9d, 0x92e57cab, 0x6d6acb29, 0x49e89a1f, 0x246e6945,
    0x00ec3873, 0x25b619a3, 0x01344895, 0x6cb2bbcf, 0x4830eaf9,
    0xb7bf5d7b, 0x933d0c4d, 0xfebbff17, 0xda39ae21, 0xdad59652,
    0xfe57c764, 0x93d1343e, 0xb7536508, 0x48dcd28a, 0x6c5e83bc,
    0x01d870e6, 0x255a21d0, 0x4b6c3346, 0x6fee6270, 0x0268912a,
    0x26eac01c, 0xd965779e, 0xfde726a8, 0x9061d5f2, 0xb4e384c4,
    0xb40fbcb7, 0x908ded81, 0xfd0b1edb, 0xd9894fed, 0x2606f86f,
    0x0284a959, 0x6f025a03, 0x4b800b35, 0x6eda2ae5, 0x4a587bd3,
    0x27de8889, 0x035cd9bf, 0xfcd36e3d, 0xd8513f0b, 0xb5d7cc51,
    0x91559d67, 0x91b9a514, 0xb53bf422, 0xd8bd0778, 0xfc3f564e,
    0x03b0e1cc, 0x2732b0fa, 0x4ab443a0, 0x6e361296, 0x96d8668c,
    0xb25a37ba, 0xdfdcc4e0, 0xfb5e95d6, 0x04d12254, 0x20537362,
    0x4dd58038, 0x6957d10e, 0x69bbe97d, 0x4d39b84b, 0x20bf4b11,
    0x043d1a27, 0xfbb2ada5, 0xdf30fc93, 0xb2b60fc9, 0x96345eff,
    0xb36e7f2f, 0x97ec2e19, 0xfa6add43, 0xdee88c75, 0x21673bf7,
    0x05e56ac1, 0x6863999b, 0x4ce1c8ad, 0x4c0df0de, 0x688fa1e8,
    0x050952b2, 0x218b0384, 0xde04b406, 0xfa86e530, 0x9700166a,
    0xb382475c, 0xddb455ca, 0xf93604fc, 0x94b0f7a6, 0xb032a690,
    0x4fbd1112, 0x6b3f4024, 0x06b9b37e, 0x223be248, 0x22d7da3b,
    0x06558b0d, 0x6bd37857, 0x4f512961, 0xb0de9ee3, 0x945ccfd5,
    0xf9da3c8f, 0xdd586db9, 0xf8024c69, 0xdc801d5f, 0xb106ee05,
    0x9584bf33, 0x6a0b08b1, 0x4e895987, 0x230faadd, 0x078dfbeb,
    0x0761c398, 0x23e392ae, 0x4e6561f4, 0x6ae730c2, 0x95688740,
    0xb1ead676, 0xdc6c252c, 0xf8ee741a, 0xf6c1cb59, 0xd2439a6f,
    0xbfc56935, 0x9b473803, 0x64c88f81, 0x404adeb7, 0x2dcc2ded,
    0x094e7cdb, 0x09a244a8, 0x2d20159e, 0x40a6e6c4, 0x6424b7f2,
    0x9bab0070, 0xbf295146, 0xd2afa21c, 0xf62df32a, 0xd377d2fa,
    0xf7f583cc, 0x9a737096, 0xbef121a0, 0x417e9622, 0x65fcc714,
    0x087a344e, 0x2cf86578, 0x2c145d0b, 0x08960c3d, 0x6510ff67,
    0x4192ae51, 0xbe1d19d3, 0x9a9f48e5, 0xf719bbbf, 0xd39bea89,
    0xbdadf81f, 0x992fa929, 0xf4a95a73, 0xd02b0b45, 0x2fa4bcc7,
    0x0b26edf1, 0x66a01eab, 0x42224f9d, 0x42ce77ee, 0x664c26d8,
    0x0bcad582, 0x2f4884b4, 0xd0c73336, 0xf4456200, 0x99c3915a,
    0xbd41c06c, 0x981be1bc, 0xbc99b08a, 0xd11f43d0, 0xf59d12e6,
    0x0a12a564, 0x2e90f452, 0x43160708, 0x6794563e, 0x67786e4d,
    0x43fa3f7b, 0x2e7ccc21, 0x0afe9d17, 0xf5712a95, 0xd1f37ba3,
    0xbc7588f9, 0x98f7d9cf, 0x6019add5, 0x449bfce3, 0x291d0fb9,
    0x0d9f5e8f, 0xf210e90d, 0xd692b83b, 0xbb144b61, 0x9f961a57,
    0x9f7a2224, 0xbbf87312, 0xd67e8048, 0xf2fcd17e, 0x0d7366fc,
    0x29f137ca, 0x4477c490, 0x60f595a6, 0x45afb476, 0x612de540,
    0x0cab161a, 0x2829472c, 0xd7a6f0ae, 0xf324a198, 0x9ea252c2,
    0xba2003f4, 0xbacc3b87, 0x9e4e6ab1, 0xf3c899eb, 0xd74ac8dd,
    0x28c57f5f, 0x0c472e69, 0x61c1dd33, 0x45438c05, 0x2b759e93,
    0x0ff7cfa5, 0x62713cff, 0x46f36dc9, 0xb97cda4b, 0x9dfe8b7d,
    0xf0787827, 0xd4fa2911, 0xd4161162, 0xf0944054, 0x9d12b30e,
    0xb990e238, 0x461f55ba, 0x629d048c, 0x0f1bf7d6, 0x2b99a6e0,
    0x0ec38730, 0x2a41d606, 0x47c7255c, 0x6345746a, 0x9ccac3e8,
    0xb84892de, 0xd5ce6184, 0xf14c30b2, 0xf1a008c1, 0xd52259f7,
    0xb8a4aaad, 0x9c26fb9b, 0x63a94c19, 0x472b1d2f, 0x2aadee75,
    0x0e2fbf43},
   {0x00000000, 0x36f290f3, 0x6de521e6, 0x5b17b115, 0xdbca43cc,
    0xed38d33f, 0xb62f622a, 0x80ddf2d9, 0x6ce581d9, 0x5a17112a,
    0x0100a03f, 0x37f230cc, 0xb72fc215, 0x81dd52e6, 0xdacae3f3,
    0xec387300, 0xd9cb03b2, 0xef399341, 0xb42e2254, 0x82dcb2a7,
    0x0201407e, 0x34f3d08d, 0x6fe46198, 0x5916f16b, 0xb52e826b,
    0x83dc1298, 0xd8cba38d, 0xee39337e, 0x6ee4c1a7, 0x58165154,
    0x0301e041, 0x35f370b2, 0x68e70125, 0x5e1591d6, 0x050220c3,
    0x33f0b030, 0xb32d42e9, 0x85dfd21a, 0xdec8630f, 0xe83af3fc,
    0x040280fc, 0x32f0100f, 0x69e7a11a, 0x5f1531e9, 0xdfc8c330,
    0xe93a53c3, 0xb22de2d6, 0x84df7225, 0xb12c0297, 0x87de9264,
    0xdcc92371, 0xea3bb382, 0x6ae6415b, 0x5c14d1a8, 0x070360bd,
    0x31f1f04e, 0xddc9834e, 0xeb3b13bd, 0xb02ca2a8, 0x86de325b,
    0x0603c082, 0x30f15071, 0x6be6e164, 0x5d147197, 0xd1ce024a,
    0xe73c92b9, 0xbc2b23ac, 0x8ad9b35f, 0x0a044186, 0x3cf6d175,
    0x67e16060, 0x5113f093, 0xbd2b8393, 0x8bd91360, 0xd0cea275,
    0xe63c3286, 0x66e1c05f, 0x501350ac, 0x0b04e1b9, 0x3df6714a,
    0x080501f8, 0x3ef7910b, 0x65e0201e, 0x5312b0ed, 0xd3cf4234,
    0xe53dd2c7, 0xbe2a63d2, 0x88d8f321, 0x64e08021, 0x521210d2,
    0x0905a1c7, 0x3ff73134, 0xbf2ac3ed, 0x89d8531e, 0xd2cfe20b,
    0xe43d72f8, 0xb929036f, 0x8fdb939c, 0xd4cc2289, 0xe23eb27a,
    0x62e340a3, 0x5411d050, 0x0f066145, 0x39f4f1b6, 0xd5cc82b6,
    0xe33e1245, 0xb829a350, 0x8edb33a3, 0x0e06c17a, 0x38f45189,
    0x63e3e09c, 0x5511706f, 0x60e200dd, 0x5610902e, 0x0d07213b,
    0x3bf5b1c8, 0xbb284311, 0x8ddad3e2, 0xd6cd62f7, 0xe03ff204,
    0x0c078104, 0x3af511f7, 0x61e2a0e2, 0x57103011, 0xd7cdc2c8,
    0xe13f523b, 0xba28e32e, 0x8cda73dd, 0x78ed02d5, 0x4e1f9226,
    0x15082333, 0x23fab3c0, 0xa3274119, 0x95d5d1ea, 0xcec260ff,
    0xf830f00c, 0x1408830c, 0x22fa13ff, 0x79eda2ea, 0x4f1f3219,
    0xcfc2c0c0, 0xf9305033, 0xa227e126, 0x94d571d5, 0xa1260167,
    0x97d49194, 0xccc32081, 0xfa31b072, 0x7aec42ab, 0x4c1ed258,
    0x1709634d, 0x21fbf3be, 0xcdc380be, 0xfb31104d, 0xa026a158,
    0x96d431ab, 0x1609c372, 0x20fb5381, 0x7bece294, 0x4d1e7267,
    0x100a03f0, 0x26f89303, 0x7def2216, 0x4b1db2e5, 0xcbc0403c,
    0xfd32d0cf, 0xa62561da, 0x90d7f129, 0x7cef8229, 0x4a1d12da,
    0x110aa3cf, 0x27f8333c, 0xa725c1e5, 0x91d75116, 0xcac0e003,
    0xfc3270f0, 0xc9c10042, 0xff3390b1, 0xa42421a4, 0x92d6b157,
    0x120b438e, 0x24f9d37d, 0x7fee6268, 0x491cf29b, 0xa524819b,
    0x93d61168, 0xc8c1a07d, 0xfe33308e, 0x7eeec257, 0x481c52a4,
    0x130be3b1, 0x25f97342, 0xa923009f, 0x9fd1906c, 0xc4c62179,
    0xf234b18a, 0x72e94353, 0x441bd3a0, 0x1f0c62b5, 0x29fef246,
    0xc5c68146, 0xf33411b5, 0xa823a0a0, 0x9ed13053, 0x1e0cc28a,
    0x28fe5279, 0x73e9e36c, 0x451b739f, 0x70e8032d, 0x461a93de,
    0x1d0d22cb, 0x2bffb238, 0xab2240e1, 0x9dd0d012, 0xc6c76107,
    0xf035f1f4, 0x1c0d82f4, 0x2aff1207, 0x71e8a312, 0x471a33e1,
    0xc7c7c138, 0xf13551cb, 0xaa22e0de, 0x9cd0702d, 0xc1c401ba,
    0xf7369149, 0xac21205c, 0x9ad3b0af, 0x1a0e4276, 0x2cfcd285,
    0x77eb6390, 0x4119f363, 0xad218063, 0x9bd31090, 0xc0c4a185,
    0xf6363176, 0x76ebc3af, 0x4019535c, 0x1b0ee249, 0x2dfc72ba,
    0x180f0208, 0x2efd92fb, 0x75ea23ee, 0x4318b31d, 0xc3c541c4,
    0xf537d137, 0xae206022, 0x98d2f0d1, 0x74ea83d1, 0x42181322,
    0x190fa237, 0x2ffd32c4, 0xaf20c01d, 0x99d250ee, 0xc2c5e1fb,
    0xf4377108}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x0000000000000000, 0xf390f23600000000, 0xe621e56d00000000,
    0x15b1175b00000000, 0xcc43cadb00000000, 0x3fd338ed00000000,
    0x2a622fb600000000, 0xd9f2dd8000000000, 0xd981e56c00000000,
    0x2a11175a00000000, 0x3fa0000100000000, 0xcc30f23700000000,
    0x15c22fb700000000, 0xe652dd8100000000, 0xf3e3cada00000000,
    0x007338ec00000000, 0xb203cbd900000000, 0x419339ef00000000,
    0x54222eb400000000, 0xa7b2dc8200000000, 0x7e40010200000000,
    0x8dd0f33400000000, 0x9861e46f00000000, 0x6bf1165900000000,
    0x6b822eb500000000, 0x9812dc8300000000, 0x8da3cbd800000000,
    0x7e3339ee00000000, 0xa7c1e46e00000000, 0x5451165800000000,
    0x41e0010300000000, 0xb270f33500000000, 0x2501e76800000000,
    0xd691155e00000000, 0xc320020500000000, 0x30b0f03300000000,
    0xe9422db300000000, 0x1ad2df8500000000, 0x0f63c8de00000000,
    0xfcf33ae800000000, 0xfc80020400000000, 0x0f10f03200000000,
    0x1aa1e76900000000, 0xe931155f00000000, 0x30c3c8df00000000,
    0xc3533ae900000000, 0xd6e22db200000000, 0x2572df8400000000,
    0x97022cb100000000, 0x6492de8700000000, 0x7123c9dc00000000,
    0x82b33bea00000000, 0x5b41e66a00000000, 0xa8d1145c00000000,
    0xbd60030700000000, 0x4ef0f13100000000, 0x4e83c9dd00000000,
    0xbd133beb00000000, 0xa8a22cb000000000, 0x5b32de8600000000,
    0x82c0030600000000, 0x7150f13000000000, 0x64e1e66b00000000,
    0x9771145d00000000, 0x4a02ced100000000, 0xb9923ce700000000,
    0xac232bbc00000000, 0x5fb3d98a00000000, 0x8641040a00000000,
    0x75d1f63c00000000, 0x6060e16700000000, 0x93f0135100000000,
    0x93832bbd00000000, 0x6013d98b00000000, 0x75a2ced000000000,
    0x86323ce600000000, 0x5fc0e16600000000, 0xac50135000000000,
    0xb9e1040b00000000, 0x4a71f63d00000000, 0xf801050800000000,
    0x0b91f73e00000000, 0x1e20e06500000000, 0xedb0125300000000,
    0x3442cfd300000000, 0xc7d23de500000000, 0xd2632abe00000000,
    0x21f3d88800000000, 0x2180e06400000000, 0xd210125200000000,
    0xc7a1050900000000, 0x3431f73f00000000, 0xedc32abf00000000,
    0x1e53d88900000000, 0x0be2cfd200000000, 0xf8723de400000000,
    0x6f0329b900000000, 0x9c93db8f00000000, 0x8922ccd400000000,
    0x7ab23ee200000000, 0xa340e36200000000, 0x50d0115400000000,
    0x4561060f00000000, 0xb6f1f43900000000, 0xb682ccd500000000,
    0x45123ee300000000, 0x50a329b800000000, 0xa333db8e00000000,
    0x7ac1060e00000000, 0x8951f43800000000, 0x9ce0e36300000000,
    0x6f70115500000000, 0xdd00e26000000000, 0x2e90105600000000,
    0x3b21070d00000000, 0xc8b1f53b00000000, 0x114328bb00000000,
    0xe2d3da8d00000000, 0xf762cdd600000000, 0x04f23fe000000000,
    0x0481070c00000000, 0xf711f53a00000000, 0xe2a0e26100000000,
    0x1130105700000000, 0xc8c2cdd700000000, 0x3b523fe100000000,
    0x2ee328ba00000000, 0xdd73da8c00000000, 0xd502ed7800000000,
    0x26921f4e00000000, 0x3323081500000000, 0xc0b3fa2300000000,
    0x194127a300000000, 0xead1d59500000000, 0xff60c2ce00000000,
    0x0cf030f800000000, 0x0c83081400000000, 0xff13fa2200000000,
    0xeaa2ed7900000000, 0x19321f4f00000000, 0xc0c0c2cf00000000,
    0x335030f900000000, 0x26e127a200000000, 0xd571d59400000000,
    0x670126a100000000, 0x9491d49700000000, 0x8120c3cc00000000,
    0x72b031fa00000000, 0xab42ec7a00000000, 0x58d21e4c00000000,
    0x4d63091700000000, 0xbef3fb2100000000, 0xbe80c3cd00000000,
    0x4d1031fb00000000, 0x58a126a000000000, 0xab31d49600000000,
    0x72c3091600000000, 0x8153fb2000000000, 0x94e2ec7b00000000,
    0x67721e4d00000000, 0xf0030a1000000000, 0x0393f82600000000,
    0x1622ef7d00000000, 0xe5b21d4b00000000, 0x3c40c0cb00000000,
    0xcfd032fd00000000, 0xda6125a600000000, 0x29f1d79000000000,
    0x2982ef7c00000000, 0xda121d4a00000000, 0xcfa30a1100000000,
    0x3c33f82700000000, 0xe5c125a700000000, 0x1651d79100000000,
    0x03e0c0ca00000000, 0xf07032fc00000000, 0x4200c1c900000000,
    0xb19033ff00000000, 0xa42124a400000000, 0x57b1d69200000000,
    0x8e430b1200000000, 0x7dd3f92400000000, 0x6862ee7f00000000,
    0x9bf21c4900000000, 0x9b8124a500000000, 0x6811d69300000000,
    0x7da0c1c800000000, 0x8e3033fe00000000, 0x57c2ee7e00000000,
    0xa4521c4800000000, 0xb1e30b1300000000, 0x4273f92500000000,
    0x9f0023a900000000, 0x6c90d19f00000000, 0x7921c6c400000000,
    0x8ab134f200000000, 0x5343e97200000000, 0xa0d31b4400000000,
    0xb5620c1f00000000, 0x46f2fe2900000000, 0x4681c6c500000000,
    0xb51134f300000000, 0xa0a023a800000000, 0x5330d19e00000000,
    0x8ac20c1e00000000, 0x7952fe2800000000, 0x6ce3e97300000000,
    0x9f731b4500000000, 0x2d03e87000000000, 0xde931a4600000000,
    0xcb220d1d00000000, 0x38b2ff2b00000000, 0xe14022ab00000000,
    0x12d0d09d00000000, 0x0761c7c600000000, 0xf4f135f000000000,
    0xf4820d1c00000000, 0x0712ff2a00000000, 0x12a3e87100000000,
    0xe1331a4700000000, 0x38c1c7c700000000, 0xcb5135f100000000,
    0xdee022aa00000000, 0x2d70d09c00000000, 0xba01c4c100000000,
    0x499136f700000000, 0x5c2021ac00000000, 0xafb0d39a00000000,
    0x76420e1a00000000, 0x85d2fc2c00000000, 0x9063eb7700000000,
    0x63f3194100000000, 0x638021ad00000000, 0x9010d39b00000000,
    0x85a1c4c000000000, 0x763136f600000000, 0xafc3eb7600000000,
    0x5c53194000000000, 0x49e20e1b00000000, 0xba72fc2d00000000,
    0x08020f1800000000, 0xfb92fd2e00000000, 0xee23ea7500000000,
    0x1db3184300000000, 0xc441c5c300000000, 0x37d137f500000000,
    0x226020ae00000000, 0xd1f0d29800000000, 0xd183ea7400000000,
    0x2213184200000000, 0x37a20f1900000000, 0xc432fd2f00000000,
    0x1dc020af00000000, 0xee50d29900000000, 0xfbe1c5c200000000,
    0x087137f400000000},
   {0x0000000000000000, 0x3651822400000000, 0x6ca2044900000000,
    0x5af3866d00000000, 0xd844099200000000, 0xee158bb600000000,
    0xb4e60ddb00000000, 0x82b78fff00000000, 0xf18f63ff00000000,
    0xc7dee1db00000000, 0x9d2d67b600000000, 0xab7ce59200000000,
    0x29cb6a6d00000000, 0x1f9ae84900000000, 0x45696e2400000000,
    0x7338ec0000000000, 0xa319b62500000000, 0x9548340100000000,
    0xcfbbb26c00000000, 0xf9ea304800000000, 0x7b5dbfb700000000,
    0x4d0c3d9300000000, 0x17ffbbfe00000000, 0x21ae39da00000000,
    0x5296d5da00000000, 0x64c757fe00000000, 0x3e34d19300000000,
    0x086553b700000000, 0x8ad2dc4800000000, 0xbc835e6c00000000,
    0xe670d80100000000, 0xd0215a2500000000, 0x46336c4b00000000,
    0x7062ee6f00000000, 0x2a91680200000000, 0x1cc0ea2600000000,
    0x9e7765d900000000, 0xa826e7fd00000000, 0xf2d5619000000000,
    0xc484e3b400000000, 0xb7bc0fb400000000, 0x81ed8d9000000000,
    0xdb1e0bfd00000000, 0xed4f89d900000000, 0x6ff8062600000000,
    0x59a9840200000000, 0x035a026f00000000, 0x350b804b00000000,
    0xe52ada6e00000000, 0xd37b584a00000000, 0x8988de2700000000,
    0xbfd95c0300000000, 0x3d6ed3fc00000000, 0x0b3f51d800000000,
    0x51ccd7b500000000, 0x679d559100000000, 0x14a5b99100000000,
    0x22f43bb500000000, 0x7807bdd800000000, 0x4e563ffc00000000,
    0xcce1b00300000000, 0xfab0322700000000, 0xa043b44a00000000,
    0x9612366e00000000, 0x8c66d89600000000, 0xba375ab200000000,
    0xe0c4dcdf00000000, 0xd6955efb00000000, 0x5422d10400000000,
    0x6273532000000000, 0x3880d54d00000000, 0x0ed1576900000000,
    0x7de9bb6900000000, 0x4bb8394d00000000, 0x114bbf2000000000,
    0x271a3d0400000000, 0xa5adb2fb00000000, 0x93fc30df00000000,
    0xc90fb6b200000000, 0xff5e349600000000, 0x2f7f6eb300000000,
    0x192eec9700000000, 0x43dd6afa00000000, 0x758ce8de00000000,
    0xf73b672100000000, 0xc16ae50500000000, 0x9b99636800000000,
    0xadc8e14c00000000, 0xdef00d4c00000000, 0xe8a18f6800000000,
    0xb252090500000000, 0x84038b2100000000, 0x06b404de00000000,
    0x30e586fa00000000, 0x6a16009700000000, 0x5c4782b300000000,
    0xca55b4dd00000000, 0xfc0436f900000000, 0xa6f7b09400000000,
    0x90a632b000000000, 0x1211bd4f00000000, 0x24403f6b00000000,
    0x7eb3b90600000000, 0x48e23b2200000000, 0x3bdad72200000000,
    0x0d8b550600000000, 0x5778d36b00000000, 0x6129514f00000000,
    0xe39edeb000000000, 0xd5cf5c9400000000, 0x8f3cdaf900000000,
    0xb96d58dd00000000, 0x694c02f800000000, 0x5f1d80dc00000000,
    0x05ee06b100000000, 0x33bf849500000000, 0xb1080b6a00000000,
    0x8759894e00000000, 0xddaa0f2300000000, 0xebfb8d0700000000,
    0x98c3610700000000, 0xae92e32300000000, 0xf461654e00000000,
    0xc230e76a00000000, 0x4087689500000000, 0x76d6eab100000000,
    0x2c256cdc00000000, 0x1a74eef800000000, 0x59cbc1f600000000,
    0x6f9a43d200000000, 0x3569c5bf00000000, 0x0338479b00000000,
    0x818fc86400000000, 0xb7de4a4000000000, 0xed2dcc2d00000000,
    0xdb7c4e0900000000, 0xa844a20900000000, 0x9e15202d00000000,
    0xc4e6a64000000000, 0xf2b7246400000000, 0x7000ab9b00000000,
    0x465129bf00000000, 0x1ca2afd200000000, 0x2af32df600000000,
    0xfad277d300000000, 0xcc83f5f700000000, 0x9670739a00000000,
    0xa021f1be00000000, 0x22967e4100000000, 0x14c7fc6500000000,
    0x4e347a0800000000, 0x7865f82c00000000, 0x0b5d142c00000000,
    0x3d0c960800000000, 0x67ff106500000000, 0x51ae924100000000,
    0xd3191dbe00000000, 0xe5489f9a00000000, 0xbfbb19f700000000,
    0x89ea9bd300000000, 0x1ff8adbd00000000, 0x29a92f9900000000,
    0x735aa9f400000000, 0x450b2bd000000000, 0xc7bca42f00000000,
    0xf1ed260b00000000, 0xab1ea06600000000, 0x9d4f224200000000,
    0xee77ce4200000000, 0xd8264c6600000000, 0x82d5ca0b00000000,
    0xb484482f00000000, 0x3633c7d000000000, 0x006245f400000000,
    0x5a91c39900000000, 0x6cc041bd00000000, 0xbce11b9800000000,
    0x8ab099bc00000000, 0xd0431fd100000000, 0xe6129df500000000,
    0x64a5120a00000000, 0x52f4902e00000000, 0x0807164300000000,
    0x3e56946700000000, 0x4d6e786700000000, 0x7b3ffa4300000000,
    0x21cc7c2e00000000, 0x179dfe0a00000000, 0x952a71f500000000,
    0xa37bf3d100000000, 0xf98875bc00000000, 0xcfd9f79800000000,
    0xd5ad196000000000, 0xe3fc9b4400000000, 0xb90f1d2900000000,
    0x8f5e9f0d00000000, 0x0de910f200000000, 0x3bb892d600000000,
    0x614b14bb00000000, 0x571a969f00000000, 0x24227a9f00000000,
    0x1273f8bb00000000, 0x48807ed600000000, 0x7ed1fcf200000000,
    0xfc66730d00000000, 0xca37f12900000000, 0x90c4774400000000,
    0xa695f56000000000, 0x76b4af4500000000, 0x40e52d6100000000,
    0x1a16ab0c00000000, 0x2c47292800000000, 0xaef0a6d700000000,
    0x98a124f300000000, 0xc252a29e00000000, 0xf40320ba00000000,
    0x873bccba00000000, 0xb16a4e9e00000000, 0xeb99c8f300000000,
    0xddc84ad700000000, 0x5f7fc52800000000, 0x692e470c00000000,
    0x33ddc16100000000, 0x058c434500000000, 0x939e752b00000000,
    0xa5cff70f00000000, 0xff3c716200000000, 0xc96df34600000000,
    0x4bda7cb900000000, 0x7d8bfe9d00000000, 0x277878f000000000,
    0x1129fad400000000, 0x621116d400000000, 0x544094f000000000,
    0x0eb3129d00000000, 0x38e290b900000000, 0xba551f4600000000,
    0x8c049d6200000000, 0xd6f71b0f00000000, 0xe0a6992b00000000,
    0x3087c30e00000000, 0x06d6412a00000000, 0x5c25c74700000000,
    0x6a74456300000000, 0xe8c3ca9c00000000, 0xde9248b800000000,
    0x8461ced500000000, 0xb2304cf100000000, 0xc108a0f100000000,
    0xf75922d500000000, 0xadaaa4b800000000, 0x9bfb269c00000000,
    0x194ca96300000000, 0x2f1d2b4700000000, 0x75eead2a00000000,
    0x43bf2f0e00000000},
   {0x0000000000000000, 0xc8179ecf00000000, 0xd1294d4400000000,
    0x193ed38b00000000, 0xa2539a8800000000, 0x6a44044700000000,
    0x737ad7cc00000000, 0xbb6d490300000000, 0x05a145ca00000000,
    0xcdb6db0500000000, 0xd488088e00000000, 0x1c9f964100000000,
    0xa7f2df4200000000, 0x6fe5418d00000000, 0x76db920600000000,
    0xbecc0cc900000000, 0x4b44fa4f00000000, 0x8353648000000000,
    0x9a6db70b00000000, 0x527a29c400000000, 0xe91760c700000000,
    0x2100fe0800000000, 0x383e2d8300000000, 0xf029b34c00000000,
    0x4ee5bf8500000000, 0x86f2214a00000000, 0x9fccf2c100000000,
    0x57db6c0e00000000, 0xecb6250d00000000, 0x24a1bbc200000000,
    0x3d9f684900000000, 0xf588f68600000000, 0x9688f49f00000000,
    0x5e9f6a5000000000, 0x47a1b9db00000000, 0x8fb6271400000000,
    0x34db6e1700000000, 0xfcccf0d800000000, 0xe5f2235300000000,
    0x2de5bd9c00000000, 0x9329b15500000000, 0x5b3e2f9a00000000,
    0x4200fc1100000000, 0x8a1762de00000000, 0x317a2bdd00000000,
    0xf96db51200000000, 0xe053669900000000, 0x2844f85600000000,
    0xddcc0ed000000000, 0x15db901f00000000, 0x0ce5439400000000,
    0xc4f2dd5b00000000, 0x7f9f945800000000, 0xb7880a9700000000,
    0xaeb6d91c00000000, 0x66a147d300000000, 0xd86d4b1a00000000,
    0x107ad5d500000000, 0x0944065e00000000, 0xc153989100000000,
    0x7a3ed19200000000, 0xb2294f5d00000000, 0xab179cd600000000,
    0x6300021900000000, 0x6d1798e400000000, 0xa500062b00000000,
    0xbc3ed5a000000000, 0x74294b6f00000000, 0xcf44026c00000000,
    0x07539ca300000000, 0x1e6d4f2800000000, 0xd67ad1e700000000,
    0x68b6dd2e00000000, 0xa0a143e100000000, 0xb99f906a00000000,
    0x71880ea500000000, 0xcae547a600000000, 0x02f2d96900000000,
    0x1bcc0ae200000000, 0xd3db942d00000000, 0x265362ab00000000,
    0xee44fc6400000000, 0xf77a2fef00000000, 0x3f6db12000000000,
    0x8400f82300000000, 0x4c1766ec00000000, 0x5529b56700000000,
    0x9d3e2ba800000000, 0x23f2276100000000, 0xebe5b9ae00000000,
    0xf2db6a2500000000, 0x3accf4ea00000000, 0x81a1bde900000000,
    0x49b6232600000000, 0x5088f0ad00000000, 0x989f6e6200000000,
    0xfb9f6c7b00000000, 0x3388f2b400000000, 0x2ab6213f00000000,
    0xe2a1bff000000000, 0x59ccf6f300000000, 0x91db683c00000000,
    0x88e5bbb700000000, 0x40f2257800000000, 0xfe3e29b100000000,
    0x3629b77e00000000, 0x2f1764f500000000, 0xe700fa3a00000000,
    0x5c6db33900000000, 0x947a2df600000000, 0x8d44fe7d00000000,
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    0xa292b5aa00000000, 0x406f3d2700000000, 0x276fd56a00000000,
    0xc5925de700000000, 0xe96f05f100000000, 0x0b928d7c00000000,
    0x6c92653100000000, 0x8e6fedbc00000000, 0x599b66a800000000,
    0xbb66ee2500000000, 0xdc66066800000000, 0x3e9b8ee500000000,
    0x1266d6f300000000, 0xf09b5e7e00000000, 0x979bb63300000000,
    0x75663ebe00000000, 0xcf61071f00000000, 0x2d9c8f9200000000,
    0x4a9c67df00000000, 0xa861ef5200000000, 0x849cb74400000000,
    0x66613fc900000000, 0x0161d78400000000, 0xe39c5f0900000000,
    0xd84f981600000000, 0x3ab2109b00000000, 0x5db2f8d600000000,
    0xbf4f705b00000000, 0x93b2284d00000000, 0x714fa0c000000000,
    0x164f488d00000000, 0xf4b2c00000000000, 0x4eb5f9a100000000,
    0xac48712c00000000, 0xcb48996100000000, 0x29b511ec00000000,
    0x054849fa00000000, 0xe7b5c17700000000, 0x80b5293a00000000,
    0x6248a1b700000000, 0xb5bc2aa300000000, 0x5741a22e00000000,
    0x30414a6300000000, 0xd2bcc2ee00000000, 0xfe419af800000000,
    0x1cbc127500000000, 0x7bbcfa3800000000, 0x994172b500000000,
    0x23464b1400000000, 0xc1bbc39900000000, 0xa6bb2bd400000000,
    0x4446a35900000000, 0x68bbfb4f00000000, 0x8a4673c200000000,
    0xed469b8f00000000, 0x0fbb130200000000, 0x43af8ca600000000,
    0xa152042b00000000, 0xc652ec6600000000, 0x24af64eb00000000,
    0x08523cfd00000000, 0xeaafb47000000000, 0x8daf5c3d00000000,
    0x6f52d4b000000000, 0xd555ed1100000000, 0x37a8659c00000000,
    0x50a88dd100000000, 0xb255055c00000000, 0x9ea85d4a00000000,
    0x7c55d5c700000000, 0x1b553d8a00000000, 0xf9a8b50700000000,
    0x2e5c3e1300000000, 0xcca1b69e00000000, 0xaba15ed300000000,
    0x495cd65e00000000, 0x65a18e4800000000, 0x875c06c500000000,
    0xe05cee8800000000, 0x02a1660500000000, 0xb8a65fa400000000,
    0x5a5bd72900000000, 0x3d5b3f6400000000, 0xdfa6b7e900000000,
    0xf35befff00000000, 0x11a6677200000000, 0x76a68f3f00000000,
    0x945b07b200000000},
   {0x0000000000000000, 0xa90b894e00000000, 0x5217129d00000000,
    0xfb1c9bd300000000, 0xe52855e100000000, 0x4c23dcaf00000000,
    0xb73f477c00000000, 0x1e34ce3200000000, 0x8b57db1900000000,
    0x225c525700000000, 0xd940c98400000000, 0x704b40ca00000000,
    0x6e7f8ef800000000, 0xc77407b600000000, 0x3c689c6500000000,
    0x9563152b00000000, 0x16afb63300000000, 0xbfa43f7d00000000,
    0x44b8a4ae00000000, 0xedb32de000000000, 0xf387e3d200000000,
    0x5a8c6a9c00000000, 0xa190f14f00000000, 0x089b780100000000,
    0x9df86d2a00000000, 0x34f3e46400000000, 0xcfef7fb700000000,
    0x66e4f6f900000000, 0x78d038cb00000000, 0xd1dbb18500000000,
    0x2ac72a5600000000, 0x83cca31800000000, 0x2c5e6d6700000000,
    0x8555e42900000000, 0x7e497ffa00000000, 0xd742f6b400000000,
    0xc976388600000000, 0x607db1c800000000, 0x9b612a1b00000000,
    0x326aa35500000000, 0xa709b67e00000000, 0x0e023f3000000000,
    0xf51ea4e300000000, 0x5c152dad00000000, 0x4221e39f00000000,
    0xeb2a6ad100000000, 0x1036f10200000000, 0xb93d784c00000000,
    0x3af1db5400000000, 0x93fa521a00000000, 0x68e6c9c900000000,
    0xc1ed408700000000, 0xdfd98eb500000000, 0x76d207fb00000000,
    0x8dce9c2800000000, 0x24c5156600000000, 0xb1a6004d00000000,
    0x18ad890300000000, 0xe3b112d000000000, 0x4aba9b9e00000000,
    0x548e55ac00000000, 0xfd85dce200000000, 0x0699473100000000,
    0xaf92ce7f00000000, 0x58bcdace00000000, 0xf1b7538000000000,
    0x0aabc85300000000, 0xa3a0411d00000000, 0xbd948f2f00000000,
    0x149f066100000000, 0xef839db200000000, 0x468814fc00000000,
    0xd3eb01d700000000, 0x7ae0889900000000, 0x81fc134a00000000,
    0x28f79a0400000000, 0x36c3543600000000, 0x9fc8dd7800000000,
    0x64d446ab00000000, 0xcddfcfe500000000, 0x4e136cfd00000000,
    0xe718e5b300000000, 0x1c047e6000000000, 0xb50ff72e00000000,
    0xab3b391c00000000, 0x0230b05200000000, 0xf92c2b8100000000,
    0x5027a2cf00000000, 0xc544b7e400000000, 0x6c4f3eaa00000000,
    0x9753a57900000000, 0x3e582c3700000000, 0x206ce20500000000,
    0x89676b4b00000000, 0x727bf09800000000, 0xdb7079d600000000,
    0x74e2b7a900000000, 0xdde93ee700000000, 0x26f5a53400000000,
    0x8ffe2c7a00000000, 0x91cae24800000000, 0x38c16b0600000000,
    0xc3ddf0d500000000, 0x6ad6799b00000000, 0xffb56cb000000000,
    0x56bee5fe00000000, 0xada27e2d00000000, 0x04a9f76300000000,
    0x1a9d395100000000, 0xb396b01f00000000, 0x488a2bcc00000000,
    0xe181a28200000000, 0x624d019a00000000, 0xcb4688d400000000,
    0x305a130700000000, 0x99519a4900000000, 0x8765547b00000000,
    0x2e6edd3500000000, 0xd57246e600000000, 0x7c79cfa800000000,
    0xe91ada8300000000, 0x401153cd00000000, 0xbb0dc81e00000000,
    0x1206415000000000, 0x0c328f6200000000, 0xa539062c00000000,
    0x5e259dff00000000, 0xf72e14b100000000, 0xf17ec44600000000,
    0x58754d0800000000, 0xa369d6db00000000, 0x0a625f9500000000,
    0x145691a700000000, 0xbd5d18e900000000, 0x4641833a00000000,
    0xef4a0a7400000000, 0x7a291f5f00000000, 0xd322961100000000,
    0x283e0dc200000000, 0x8135848c00000000, 0x9f014abe00000000,
    0x360ac3f000000000, 0xcd16582300000000, 0x641dd16d00000000,
    0xe7d1727500000000, 0x4edafb3b00000000, 0xb5c660e800000000,
    0x1ccde9a600000000, 0x02f9279400000000, 0xabf2aeda00000000,
    0x50ee350900000000, 0xf9e5bc4700000000, 0x6c86a96c00000000,
    0xc58d202200000000, 0x3e91bbf100000000, 0x979a32bf00000000,
    0x89aefc8d00000000, 0x20a575c300000000, 0xdbb9ee1000000000,
    0x72b2675e00000000, 0xdd20a92100000000, 0x742b206f00000000,
    0x8f37bbbc00000000, 0x263c32f200000000, 0x3808fcc000000000,
    0x9103758e00000000, 0x6a1fee5d00000000, 0xc314671300000000,
    0x5677723800000000, 0xff7cfb7600000000, 0x046060a500000000,
    0xad6be9eb00000000, 0xb35f27d900000000, 0x1a54ae9700000000,
    0xe148354400000000, 0x4843bc0a00000000, 0xcb8f1f1200000000,
    0x6284965c00000000, 0x99980d8f00000000, 0x309384c100000000,
    0x2ea74af300000000, 0x87acc3bd00000000, 0x7cb0586e00000000,
    0xd5bbd12000000000, 0x40d8c40b00000000, 0xe9d34d4500000000,
    0x12cfd69600000000, 0xbbc45fd800000000, 0xa5f091ea00000000,
    0x0cfb18a400000000, 0xf7e7837700000000, 0x5eec0a3900000000,
    0xa9c21e8800000000, 0x00c997c600000000, 0xfbd50c1500000000,
    0x52de855b00000000, 0x4cea4b6900000000, 0xe5e1c22700000000,
    0x1efd59f400000000, 0xb7f6d0ba00000000, 0x2295c59100000000,
    0x8b9e4cdf00000000, 0x7082d70c00000000, 0xd9895e4200000000,
    0xc7bd907000000000, 0x6eb6193e00000000, 0x95aa82ed00000000,
    0x3ca10ba300000000, 0xbf6da8bb00000000, 0x166621f500000000,
    0xed7aba2600000000, 0x4471336800000000, 0x5a45fd5a00000000,
    0xf34e741400000000, 0x0852efc700000000, 0xa159668900000000,
    0x343a73a200000000, 0x9d31faec00000000, 0x662d613f00000000,
    0xcf26e87100000000, 0xd112264300000000, 0x7819af0d00000000,
    0x830534de00000000, 0x2a0ebd9000000000, 0x859c73ef00000000,
    0x2c97faa100000000, 0xd78b617200000000, 0x7e80e83c00000000,
    0x60b4260e00000000, 0xc9bfaf4000000000, 0x32a3349300000000,
    0x9ba8bddd00000000, 0x0ecba8f600000000, 0xa7c021b800000000,
    0x5cdcba6b00000000, 0xf5d7332500000000, 0xebe3fd1700000000,
    0x42e8745900000000, 0xb9f4ef8a00000000, 0x10ff66c400000000,
    0x9333c5dc00000000, 0x3a384c9200000000, 0xc124d74100000000,
    0x682f5e0f00000000, 0x761b903d00000000, 0xdf10197300000000,
    0x240c82a000000000, 0x8d070bee00000000, 0x18641ec500000000,
    0xb16f978b00000000, 0x4a730c5800000000, 0xe378851600000000,
    0xfd4c4b2400000000, 0x5447c26a00000000, 0xaf5b59b900000000,
    0x0650d0f700000000},
   {0x0000000000000000, 0x479244af00000000, 0xcf22f88500000000,
    0x88b0bc2a00000000, 0xdf4381d000000000, 0x98d1c57f00000000,
    0x1061795500000000, 0x57f33dfa00000000, 0xff81737a00000000,
    0xb81337d500000000, 0x30a38bff00000000, 0x7731cf5000000000,
    0x20c2f2aa00000000, 0x6750b60500000000, 0xefe00a2f00000000,
    0xa8724e8000000000, 0xfe03e7f400000000, 0xb991a35b00000000,
    0x31211f7100000000, 0x76b35bde00000000, 0x2140662400000000,
    0x66d2228b00000000, 0xee629ea100000000, 0xa9f0da0e00000000,
    0x0182948e00000000, 0x4610d02100000000, 0xcea06c0b00000000,
    0x893228a400000000, 0xdec1155e00000000, 0x995351f100000000,
    0x11e3eddb00000000, 0x5671a97400000000, 0xbd01bf3200000000,
    0xfa93fb9d00000000, 0x722347b700000000, 0x35b1031800000000,
    0x62423ee200000000, 0x25d07a4d00000000, 0xad60c66700000000,
    0xeaf282c800000000, 0x4280cc4800000000, 0x051288e700000000,
    0x8da234cd00000000, 0xca30706200000000, 0x9dc34d9800000000,
    0xda51093700000000, 0x52e1b51d00000000, 0x1573f1b200000000,
    0x430258c600000000, 0x04901c6900000000, 0x8c20a04300000000,
    0xcbb2e4ec00000000, 0x9c41d91600000000, 0xdbd39db900000000,
    0x5363219300000000, 0x14f1653c00000000, 0xbc832bbc00000000,
    0xfb116f1300000000, 0x73a1d33900000000, 0x3433979600000000,
    0x63c0aa6c00000000, 0x2452eec300000000, 0xace252e900000000,
    0xeb70164600000000, 0x7a037e6500000000, 0x3d913aca00000000,
    0xb52186e000000000, 0xf2b3c24f00000000, 0xa540ffb500000000,
    0xe2d2bb1a00000000, 0x6a62073000000000, 0x2df0439f00000000,
    0x85820d1f00000000, 0xc21049b000000000, 0x4aa0f59a00000000,
    0x0d32b13500000000, 0x5ac18ccf00000000, 0x1d53c86000000000,
    0x95e3744a00000000, 0xd27130e500000000, 0x8400999100000000,
    0xc392dd3e00000000, 0x4b22611400000000, 0x0cb025bb00000000,
    0x5b43184100000000, 0x1cd15cee00000000, 0x9461e0c400000000,
    0xd3f3a46b00000000, 0x7b81eaeb00000000, 0x3c13ae4400000000,
    0xb4a3126e00000000, 0xf33156c100000000, 0xa4c26b3b00000000,
    0xe3502f9400000000, 0x6be093be00000000, 0x2c72d71100000000,
    0xc702c15700000000, 0x809085f800000000, 0x082039d200000000,
    0x4fb27d7d00000000, 0x1841408700000000, 0x5fd3042800000000,
    0xd763b80200000000, 0x90f1fcad00000000, 0x3883b22d00000000,
    0x7f11f68200000000, 0xf7a14aa800000000, 0xb0330e0700000000,
    0xe7c033fd00000000, 0xa052775200000000, 0x28e2cb7800000000,
    0x6f708fd700000000, 0x390126a300000000, 0x7e93620c00000000,
    0xf623de2600000000, 0xb1b19a8900000000, 0xe642a77300000000,
    0xa1d0e3dc00000000, 0x29605ff600000000, 0x6ef21b5900000000,
    0xc68055d900000000, 0x8112117600000000, 0x09a2ad5c00000000,
    0x4e30e9f300000000, 0x19c3d40900000000, 0x5e5190a600000000,
    0xd6e12c8c00000000, 0x9173682300000000, 0xf406fcca00000000,
    0xb394b86500000000, 0x3b24044f00000000, 0x7cb640e000000000,
    0x2b457d1a00000000, 0x6cd739b500000000, 0xe467859f00000000,
    0xa3f5c13000000000, 0x0b878fb000000000, 0x4c15cb1f00000000,
    0xc4a5773500000000, 0x8337339a00000000, 0xd4c40e6000000000,
    0x93564acf00000000, 0x1be6f6e500000000, 0x5c74b24a00000000,
    0x0a051b3e00000000, 0x4d975f9100000000, 0xc527e3bb00000000,
    0x82b5a71400000000, 0xd5469aee00000000, 0x92d4de4100000000,
    0x1a64626b00000000, 0x5df626c400000000, 0xf584684400000000,
    0xb2162ceb00000000, 0x3aa690c100000000, 0x7d34d46e00000000,
    0x2ac7e99400000000, 0x6d55ad3b00000000, 0xe5e5111100000000,
    0xa27755be00000000, 0x490743f800000000, 0x0e95075700000000,
    0x8625bb7d00000000, 0xc1b7ffd200000000, 0x9644c22800000000,
    0xd1d6868700000000, 0x59663aad00000000, 0x1ef47e0200000000,
    0xb686308200000000, 0xf114742d00000000, 0x79a4c80700000000,
    0x3e368ca800000000, 0x69c5b15200000000, 0x2e57f5fd00000000,
    0xa6e749d700000000, 0xe1750d7800000000, 0xb704a40c00000000,
    0xf096e0a300000000, 0x78265c8900000000, 0x3fb4182600000000,
    0x684725dc00000000, 0x2fd5617300000000, 0xa765dd5900000000,
    0xe0f799f600000000, 0x4885d77600000000, 0x0f1793d900000000,
    0x87a72ff300000000, 0xc0356b5c00000000, 0x97c656a600000000,
    0xd054120900000000, 0x58e4ae2300000000, 0x1f76ea8c00000000,
    0x8e0582af00000000, 0xc997c60000000000, 0x41277a2a00000000,
    0x06b53e8500000000, 0x5146037f00000000, 0x16d447d000000000,
    0x9e64fbfa00000000, 0xd9f6bf5500000000, 0x7184f1d500000000,
    0x3616b57a00000000, 0xbea6095000000000, 0xf9344dff00000000,
    0xaec7700500000000, 0xe95534aa00000000, 0x61e5888000000000,
    0x2677cc2f00000000, 0x7006655b00000000, 0x379421f400000000,
    0xbf249dde00000000, 0xf8b6d97100000000, 0xaf45e48b00000000,
    0xe8d7a02400000000, 0x60671c0e00000000, 0x27f558a100000000,
    0x8f87162100000000, 0xc815528e00000000, 0x40a5eea400000000,
    0x0737aa0b00000000, 0x50c497f100000000, 0x1756d35e00000000,
    0x9fe66f7400000000, 0xd8742bdb00000000, 0x33043d9d00000000,
    0x7496793200000000, 0xfc26c51800000000, 0xbbb481b700000000,
    0xec47bc4d00000000, 0xabd5f8e200000000, 0x236544c800000000,
    0x64f7006700000000, 0xcc854ee700000000, 0x8b170a4800000000,
    0x03a7b66200000000, 0x4435f2cd00000000, 0x13c6cf3700000000,
    0x54548b9800000000, 0xdce437b200000000, 0x9b76731d00000000,
    0xcd07da6900000000, 0x8a959ec600000000, 0x022522ec00000000,
    0x45b7664300000000, 0x12445bb900000000, 0x55d61f1600000000,
    0xdd66a33c00000000, 0x9af4e79300000000, 0x3286a91300000000,
    0x7514edbc00000000, 0xfda4519600000000, 0xba36153900000000,
    0xedc528c300000000, 0xaa576c6c00000000, 0x22e7d04600000000,
    0x657594e900000000}};

#else /* W == 4 */

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0x65673b46, 0xcace768c, 0xafa94dca, 0x4eedeb59,
    0x2b8ad01f, 0x84239dd5, 0xe144a693, 0x9ddbd6b2, 0xf8bcedf4,
    0x5715a03e, 0x32729b78, 0xd3363deb, 0xb65106ad, 0x19f84b67,
    0x7c9f7021, 0xe0c6ab25, 0x85a19063, 0x2a08dda9, 0x4f6fe6ef,
    0xae2b407c, 0xcb4c7b3a, 0x64e536f0, 0x01820db6, 0x7d1d7d97,
    0x187a46d1, 0xb7d30b1b, 0xd2b4305d, 0x33f096ce, 0x5697ad88,
    0xf93ee042, 0x9c59db04, 0x1afc500b, 0x7f9b6b4d, 0xd0322687,
    0xb5551dc1, 0x5411bb52, 0x31768014, 0x9edfcdde, 0xfbb8f698,
    0x872786b9, 0xe240bdff, 0x4de9f035, 0x288ecb73, 0xc9ca6de0,
    0xacad56a6, 0x03041b6c, 0x6663202a, 0xfa3afb2e, 0x9f5dc068,
    0x30f48da2, 0x5593b6e4, 0xb4d71077, 0xd1b02b31, 0x7e1966fb,
    0x1b7e5dbd, 0x67e12d9c, 0x028616da, 0xad2f5b10, 0xc8486056,
    0x290cc6c5, 0x4c6bfd83, 0xe3c2b049, 0x86a58b0f, 0x35f8a016,
    0x509f9b50, 0xff36d69a, 0x9a51eddc, 0x7b154b4f, 0x1e727009,
    0xb1db3dc3, 0xd4bc0685, 0xa82376a4, 0xcd444de2, 0x62ed0028,
    0x078a3b6e, 0xe6ce9dfd, 0x83a9a6bb, 0x2c00eb71, 0x4967d037,
    0xd53e0b33, 0xb0593075, 0x1ff07dbf, 0x7a9746f9, 0x9bd3e06a,
    0xfeb4db2c, 0x511d96e6, 0x347aada0, 0x48e5dd81, 0x2d82e6c7,
    0x822bab0d, 0xe74c904b, 0x060836d8, 0x636f0d9e, 0xccc64054,
    0xa9a17b12, 0x2f04f01d, 0x4a63cb5b, 0xe5ca8691, 0x80adbdd7,
    0x61e91b44, 0x048e2002, 0xab276dc8, 0xce40568e, 0xb2df26af,
    0xd7b81de9, 0x78115023, 0x1d766b65, 0xfc32cdf6, 0x9955f6b0,
    0x36fcbb7a, 0x539b803c, 0xcfc25b38, 0xaaa5607e, 0x050c2db4,
    0x606b16f2, 0x812fb061, 0xe4488b27, 0x4be1c6ed, 0x2e86fdab,
    0x52198d8a, 0x377eb6cc, 0x98d7fb06, 0xfdb0c040, 0x1cf466d3,
    0x79935d95, 0xd63a105f, 0xb35d2b19, 0x6bf1402c, 0x0e967b6a,
    0xa13f36a0, 0xc4580de6, 0x251cab75, 0x407b9033, 0xefd2ddf9,
    0x8ab5e6bf, 0xf62a969e, 0x934dadd8, 0x3ce4e012, 0x5983db54,
    0xb8c77dc7, 0xdda04681, 0x72090b4b, 0x176e300d, 0x8b37eb09,
    0xee50d04f, 0x41f99d85, 0x249ea6c3, 0xc5da0050, 0xa0bd3b16,
    0x0f1476dc, 0x6a734d9a, 0x16ec3dbb, 0x738b06fd, 0xdc224b37,
    0xb9457071, 0x5801d6e2, 0x3d66eda4, 0x92cfa06e, 0xf7a89b28,
    0x710d1027, 0x146a2b61, 0xbbc366ab, 0xdea45ded, 0x3fe0fb7e,
    0x5a87c038, 0xf52e8df2, 0x9049b6b4, 0xecd6c695, 0x89b1fdd3,
    0x2618b019, 0x437f8b5f, 0xa23b2dcc, 0xc75c168a, 0x68f55b40,
    0x0d926006, 0x91cbbb02, 0xf4ac8044, 0x5b05cd8e, 0x3e62f6c8,
    0xdf26505b, 0xba416b1d, 0x15e826d7, 0x708f1d91, 0x0c106db0,
    0x697756f6, 0xc6de1b3c, 0xa3b9207a, 0x42fd86e9, 0x279abdaf,
    0x8833f065, 0xed54cb23, 0x5e09e03a, 0x3b6edb7c, 0x94c796b6,
    0xf1a0adf0, 0x10e40b63, 0x75833025, 0xda2a7def, 0xbf4d46a9,
    0xc3d23688, 0xa6b50dce, 0x091c4004, 0x6c7b7b42, 0x8d3fddd1,
    0xe858e697, 0x47f1ab5d, 0x2296901b, 0xbecf4b1f, 0xdba87059,
    0x74013d93, 0x116606d5, 0xf022a046, 0x95459b00, 0x3aecd6ca,
    0x5f8bed8c, 0x23149dad, 0x4673a6eb, 0xe9daeb21, 0x8cbdd067,
    0x6df976f4, 0x089e4db2, 0xa7370078, 0xc2503b3e, 0x44f5b031,
    0x21928b77, 0x8e3bc6bd, 0xeb5cfdfb, 0x0a185b68, 0x6f7f602e,
    0xc0d62de4, 0xa5b116a2, 0xd92e6683, 0xbc495dc5, 0x13e0100f,
    0x76872b49, 0x97c38dda, 0xf2a4b69c, 0x5d0dfb56, 0x386ac010,
    0xa4331b14, 0xc1542052, 0x6efd6d98, 0x0b9a56de, 0xeadef04d,
    0x8fb9cb0b, 0x201086c1, 0x4577bd87, 0x39e8cda6, 0x5c8ff6e0,
    0xf326bb2a, 0x9641806c, 0x770526ff, 0x12621db9, 0xbdcb5073,
    0xd8ac6b35},
   {0x00000000, 0xd7e28058, 0x74b406f1, 0xa35686a9, 0xe9680de2,
    0x3e8a8dba, 0x9ddc0b13, 0x4a3e8b4b, 0x09a11d85, 0xde439ddd,
    0x7d151b74, 0xaaf79b2c, 0xe0c91067, 0x372b903f, 0x947d1696,
    0x439f96ce, 0x13423b0a, 0xc4a0bb52, 0x67f63dfb, 0xb014bda3,
    0xfa2a36e8, 0x2dc8b6b0, 0x8e9e3019, 0x597cb041, 0x1ae3268f,
    0xcd01a6d7, 0x6e57207e, 0xb9b5a026, 0xf38b2b6d, 0x2469ab35,
    0x873f2d9c, 0x50ddadc4, 0x26847614, 0xf166f64c, 0x523070e5,
    0x85d2f0bd, 0xcfec7bf6, 0x180efbae, 0xbb587d07, 0x6cbafd5f,
    0x2f256b91, 0xf8c7ebc9, 0x5b916d60, 0x8c73ed38, 0xc64d6673,
    0x11afe62b, 0xb2f96082, 0x651be0da, 0x35c64d1e, 0xe224cd46,
    0x41724bef, 0x9690cbb7, 0xdcae40fc, 0x0b4cc0a4, 0xa81a460d,
    0x7ff8c655, 0x3c67509b, 0xeb85d0c3, 0x48d3566a, 0x9f31d632,
    0xd50f5d79, 0x02eddd21, 0xa1bb5b88, 0x7659dbd0, 0x4d08ec28,
    0x9aea6c70, 0x39bcead9, 0xee5e6a81, 0xa460e1ca, 0x73826192,
    0xd0d4e73b, 0x07366763, 0x44a9f1ad, 0x934b71f5, 0x301df75c,
    0xe7ff7704, 0xadc1fc4f, 0x7a237c17, 0xd975fabe, 0x0e977ae6,
    0x5e4ad722, 0x89a8577a, 0x2afed1d3, 0xfd1c518b, 0xb722dac0,
    0x60c05a98, 0xc396dc31, 0x14745c69, 0x57ebcaa7, 0x80094aff,
    0x235fcc56, 0xf4bd4c0e, 0xbe83c745, 0x6961471d, 0xca37c1b4,
    0x1dd541ec, 0x6b8c9a3c, 0xbc6e1a64, 0x1f389ccd, 0xc8da1c95,
    0x82e497de, 0x55061786, 0xf650912f, 0x21b21177, 0x622d87b9,
    0xb5cf07e1, 0x16998148, 0xc17b0110, 0x8b458a5b, 0x5ca70a03,
    0xfff18caa, 0x28130cf2, 0x78cea136, 0xaf2c216e, 0x0c7aa7c7,
    0xdb98279f, 0x91a6acd4, 0x46442c8c, 0xe512aa25, 0x32f02a7d,
    0x716fbcb3, 0xa68d3ceb, 0x05dbba42, 0xd2393a1a, 0x9807b151,
    0x4fe53109, 0xecb3b7a0, 0x3b5137f8, 0x9a11d850, 0x4df35808,
    0xeea5dea1, 0x39475ef9, 0x7379d5b2, 0xa49b55ea, 0x07cdd343,
    0xd02f531b, 0x93b0c5d5, 0x4452458d, 0xe704c324, 0x30e6437c,
    0x7ad8c837, 0xad3a486f, 0x0e6ccec6, 0xd98e4e9e, 0x8953e35a,
    0x5eb16302, 0xfde7e5ab, 0x2a0565f3, 0x603beeb8, 0xb7d96ee0,
    0x148fe849, 0xc36d6811, 0x80f2fedf, 0x57107e87, 0xf446f82e,
    0x23a47876, 0x699af33d, 0xbe787365, 0x1d2ef5cc, 0xcacc7594,
    0xbc95ae44, 0x6b772e1c, 0xc821a8b5, 0x1fc328ed, 0x55fda3a6,
    0x821f23fe, 0x2149a557, 0xf6ab250f, 0xb534b3c1, 0x62d63399,
    0xc180b530, 0x16623568, 0x5c5cbe23, 0x8bbe3e7b, 0x28e8b8d2,
    0xff0a388a, 0xafd7954e, 0x78351516, 0xdb6393bf, 0x0c8113e7,
    0x46bf98ac, 0x915d18f4, 0x320b9e5d, 0xe5e91e05, 0xa67688cb,
    0x71940893, 0xd2c28e3a, 0x05200e62, 0x4f1e8529, 0x98fc0571,
    0x3baa83d8, 0xec480380, 0xd7193478, 0x00fbb420, 0xa3ad3289,
    0x744fb2d1, 0x3e71399a, 0xe993b9c2, 0x4ac53f6b, 0x9d27bf33,
    0xdeb829fd, 0x095aa9a5, 0xaa0c2f0c, 0x7deeaf54, 0x37d0241f,
    0xe032a447, 0x436422ee, 0x9486a2b6, 0xc45b0f72, 0x13b98f2a,
    0xb0ef0983, 0x670d89db, 0x2d330290, 0xfad182c8, 0x59870461,
    0x8e658439, 0xcdfa12f7, 0x1a1892af, 0xb94e1406, 0x6eac945e,
    0x24921f15, 0xf3709f4d, 0x502619e4, 0x87c499bc, 0xf19d426c,
    0x267fc234, 0x8529449d, 0x52cbc4c5, 0x18f54f8e, 0xcf17cfd6,
    0x6c41497f, 0xbba3c927, 0xf83c5fe9, 0x2fdedfb1, 0x8c885918,
    0x5b6ad940, 0x1154520b, 0xc6b6d253, 0x65e054fa, 0xb202d4a2,
    0xe2df7966, 0x353df93e, 0x966b7f97, 0x4189ffcf, 0x0bb77484,
    0xdc55f4dc, 0x7f037275, 0xa8e1f22d, 0xeb7e64e3, 0x3c9ce4bb,
    0x9fca6212, 0x4828e24a, 0x02166901, 0xd5f4e959, 0x76a26ff0,
    0xa140efa8},
   {0x00000000, 0xef52b6e1, 0x05d46b83, 0xea86dd62, 0x0ba8d706,
    0xe4fa61e7, 0x0e7cbc85, 0xe12e0a64, 0x1751ae0c, 0xf80318ed,
    0x1285c58f, 0xfdd7736e, 0x1cf9790a, 0xf3abcfeb, 0x192d1289,
    0xf67fa468, 0x2ea35c18, 0xc1f1eaf9, 0x2b77379b, 0xc425817a,
    0x250b8b1e, 0xca593dff, 0x20dfe09d, 0xcf8d567c, 0x39f2f214,
    0xd6a044f5, 0x3c269997, 0xd3742f76, 0x325a2512, 0xdd0893f3,
    0x378e4e91, 0xd8dcf870, 0x5d46b830, 0xb2140ed1, 0x5892d3b3,
    0xb7c06552, 0x56ee6f36, 0xb9bcd9d7, 0x533a04b5, 0xbc68b254,
    0x4a17163c, 0xa545a0dd, 0x4fc37dbf, 0xa091cb5e, 0x41bfc13a,
    0xaeed77db, 0x446baab9, 0xab391c58, 0x73e5e428, 0x9cb752c9,
    0x76318fab, 0x9963394a, 0x784d332e, 0x971f85cf, 0x7d9958ad,
    0x92cbee4c, 0x64b44a24, 0x8be6fcc5, 0x616021a7, 0x8e329746,
    0x6f1c9d22, 0x804e2bc3, 0x6ac8f6a1, 0x859a4040, 0xba8d7060,
    0x55dfc681, 0xbf591be3, 0x500bad02, 0xb125a766, 0x5e771187,
    0xb4f1cce5, 0x5ba37a04, 0xaddcde6c, 0x428e688d, 0xa808b5ef,
    0x475a030e, 0xa674096a, 0x4926bf8b, 0xa3a062e9, 0x4cf2d408,
    0x942e2c78, 0x7b7c9a99, 0x91fa47fb, 0x7ea8f11a, 0x9f86fb7e,
    0x70d44d9f, 0x9a5290fd, 0x7500261c, 0x837f8274, 0x6c2d3495,
    0x86abe9f7, 0x69f95f16, 0x88d75572, 0x6785e393, 0x8d033ef1,
    0x62518810, 0xe7cbc850, 0x08997eb1, 0xe21fa3d3, 0x0d4d1532,
    0xec631f56, 0x0331a9b7, 0xe9b774d5, 0x06e5c234, 0xf09a665c,
    0x1fc8d0bd, 0xf54e0ddf, 0x1a1cbb3e, 0xfb32b15a, 0x146007bb,
    0xfee6dad9, 0x11b46c38, 0xc9689448, 0x263a22a9, 0xccbcffcb,
    0x23ee492a, 0xc2c0434e, 0x2d92f5af, 0xc71428cd, 0x28469e2c,
    0xde393a44, 0x316b8ca5, 0xdbed51c7, 0x34bfe726, 0xd591ed42,
    0x3ac35ba3, 0xd04586c1, 0x3f173020, 0xae6be681, 0x41395060,
    0xabbf8d02, 0x44ed3be3, 0xa5c33187, 0x4a918766, 0xa0175a04,
    0x4f45ece5, 0xb93a488d, 0x5668fe6c, 0xbcee230e, 0x53bc95ef,
    0xb2929f8b, 0x5dc0296a, 0xb746f408, 0x581442e9, 0x80c8ba99,
    0x6f9a0c78, 0x851cd11a, 0x6a4e67fb, 0x8b606d9f, 0x6432db7e,
    0x8eb4061c, 0x61e6b0fd, 0x97991495, 0x78cba274, 0x924d7f16,
    0x7d1fc9f7, 0x9c31c393, 0x73637572, 0x99e5a810, 0x76b71ef1,
    0xf32d5eb1, 0x1c7fe850, 0xf6f93532, 0x19ab83d3, 0xf88589b7,
    0x17d73f56, 0xfd51e234, 0x120354d5, 0xe47cf0bd, 0x0b2e465c,
    0xe1a89b3e, 0x0efa2ddf, 0xefd427bb, 0x0086915a, 0xea004c38,
    0x0552fad9, 0xdd8e02a9, 0x32dcb448, 0xd85a692a, 0x3708dfcb,
    0xd626d5af, 0x3974634e, 0xd3f2be2c, 0x3ca008cd, 0xcadfaca5,
    0x258d1a44, 0xcf0bc726, 0x205971c7, 0xc1777ba3, 0x2e25cd42,
    0xc4a31020, 0x2bf1a6c1, 0x14e696e1, 0xfbb42000, 0x1132fd62,
    0xfe604b83, 0x1f4e41e7, 0xf01cf706, 0x1a9a2a64, 0xf5c89c85,
    0x03b738ed, 0xece58e0c, 0x0663536e, 0xe931e58f, 0x081fefeb,
    0xe74d590a, 0x0dcb8468, 0xe2993289, 0x3a45caf9, 0xd5177c18,
    0x3f91a17a, 0xd0c3179b, 0x31ed1dff, 0xdebfab1e, 0x3439767c,
    0xdb6bc09d, 0x2d1464f5, 0xc246d214, 0x28c00f76, 0xc792b997,
    0x26bcb3f3, 0xc9ee0512, 0x2368d870, 0xcc3a6e91, 0x49a02ed1,
    0xa6f29830, 0x4c744552, 0xa326f3b3, 0x4208f9d7, 0xad5a4f36,
    0x47dc9254, 0xa88e24b5, 0x5ef180dd, 0xb1a3363c, 0x5b25eb5e,
    0xb4775dbf, 0x555957db, 0xba0be13a, 0x508d3c58, 0xbfdf8ab9,
    0x670372c9, 0x8851c428, 0x62d7194a, 0x8d85afab, 0x6caba5cf,
    0x83f9132e, 0x697fce4c, 0x862d78ad, 0x7052dcc5, 0x9f006a24,
    0x7586b746, 0x9ad401a7, 0x7bfa0bc3, 0x94a8bd22, 0x7e2e6040,
    0x917cd6a1},
   {0x00000000, 0x87a6cb43, 0xd43c90c7, 0x539a5b84, 0x730827cf,
    0xf4aeec8c, 0xa734b708, 0x20927c4b, 0xe6104f9e, 0x61b684dd,
    0x322cdf59, 0xb58a141a, 0x95186851, 0x12bea312, 0x4124f896,
    0xc68233d5, 0x1751997d, 0x90f7523e, 0xc36d09ba, 0x44cbc2f9,
    0x6459beb2, 0xe3ff75f1, 0xb0652e75, 0x37c3e536, 0xf141d6e3,
    0x76e71da0, 0x257d4624, 0xa2db8d67, 0x8249f12c, 0x05ef3a6f,
    0x567561eb, 0xd1d3aaa8, 0x2ea332fa, 0xa905f9b9, 0xfa9fa23d,
    0x7d39697e, 0x5dab1535, 0xda0dde76, 0x899785f2, 0x0e314eb1,
    0xc8b37d64, 0x4f15b627, 0x1c8feda3, 0x9b2926e0, 0xbbbb5aab,
    0x3c1d91e8, 0x6f87ca6c, 0xe821012f, 0x39f2ab87, 0xbe5460c4,
    0xedce3b40, 0x6a68f003, 0x4afa8c48, 0xcd5c470b, 0x9ec61c8f,
    0x1960d7cc, 0xdfe2e419, 0x58442f5a, 0x0bde74de, 0x8c78bf9d,
    0xaceac3d6, 0x2b4c0895, 0x78d65311, 0xff709852, 0x5d4665f4,
    0xdae0aeb7, 0x897af533, 0x0edc3e70, 0x2e4e423b, 0xa9e88978,
    0xfa72d2fc, 0x7dd419bf, 0xbb562a6a, 0x3cf0e129, 0x6f6abaad,
    0xe8cc71ee, 0xc85e0da5, 0x4ff8c6e6, 0x1c629d62, 0x9bc45621,
    0x4a17fc89, 0xcdb137ca, 0x9e2b6c4e, 0x198da70d, 0x391fdb46,
    0xbeb91005, 0xed234b81, 0x6a8580c2, 0xac07b317, 0x2ba17854,
    0x783b23d0, 0xff9de893, 0xdf0f94d8, 0x58a95f9b, 0x0b33041f,
    0x8c95cf5c, 0x73e5570e, 0xf4439c4d, 0xa7d9c7c9, 0x207f0c8a,
    0x00ed70c1, 0x874bbb82, 0xd4d1e006, 0x53772b45, 0x95f51890,
    0x1253d3d3, 0x41c98857, 0xc66f4314, 0xe6fd3f5f, 0x615bf41c,
    0x32c1af98, 0xb56764db, 0x64b4ce73, 0xe3120530, 0xb0885eb4,
    0x372e95f7, 0x17bce9bc, 0x901a22ff, 0xc380797b, 0x4426b238,
    0x82a481ed, 0x05024aae, 0x5698112a, 0xd13eda69, 0xf1aca622,
    0x760a6d61, 0x259036e5, 0xa236fda6, 0xba8ccbe8, 0x3d2a00ab,
    0x6eb05b2f, 0xe916906c, 0xc984ec27, 0x4e222764, 0x1db87ce0,
    0x9a1eb7a3, 0x5c9c8476, 0xdb3a4f35, 0x88a014b1, 0x0f06dff2,
    0x2f94a3b9, 0xa83268fa, 0xfba8337e, 0x7c0ef83d, 0xaddd5295,
    0x2a7b99d6, 0x79e1c252, 0xfe470911, 0xded5755a, 0x5973be19,
    0x0ae9e59d, 0x8d4f2ede, 0x4bcd1d0b, 0xcc6bd648, 0x9ff18dcc,
    0x1857468f, 0x38c53ac4, 0xbf63f187, 0xecf9aa03, 0x6b5f6140,
    0x942ff912, 0x13893251, 0x401369d5, 0xc7b5a296, 0xe727dedd,
    0x6081159e, 0x331b4e1a, 0xb4bd8559, 0x723fb68c, 0xf5997dcf,
    0xa603264b, 0x21a5ed08, 0x01379143, 0x86915a00, 0xd50b0184,
    0x52adcac7, 0x837e606f, 0x04d8ab2c, 0x5742f0a8, 0xd0e43beb,
    0xf07647a0, 0x77d08ce3, 0x244ad767, 0xa3ec1c24, 0x656e2ff1,
    0xe2c8e4b2, 0xb152bf36, 0x36f47475, 0x1666083e, 0x91c0c37d,
    0xc25a98f9, 0x45fc53ba, 0xe7caae1c, 0x606c655f, 0x33f63edb,
    0xb450f598, 0x94c289d3, 0x13644290, 0x40fe1914, 0xc758d257,
    0x01dae182, 0x867c2ac1, 0xd5e67145, 0x5240ba06, 0x72d2c64d,
    0xf5740d0e, 0xa6ee568a, 0x21489dc9, 0xf09b3761, 0x773dfc22,
    0x24a7a7a6, 0xa3016ce5, 0x839310ae, 0x0435dbed, 0x57af8069,
    0xd0094b2a, 0x168b78ff, 0x912db3bc, 0xc2b7e838, 0x4511237b,
    0x65835f30, 0xe2259473, 0xb1bfcff7, 0x361904b4, 0xc9699ce6,
    0x4ecf57a5, 0x1d550c21, 0x9af3c762, 0xba61bb29, 0x3dc7706a,
    0x6e5d2bee, 0xe9fbe0ad, 0x2f79d378, 0xa8df183b, 0xfb4543bf,
    0x7ce388fc, 0x5c71f4b7, 0xdbd73ff4, 0x884d6470, 0x0febaf33,
    0xde38059b, 0x599eced8, 0x0a04955c, 0x8da25e1f, 0xad302254,
    0x2a96e917, 0x790cb293, 0xfeaa79d0, 0x38284a05, 0xbf8e8146,
    0xec14dac2, 0x6bb21181, 0x4b206dca, 0xcc86a689, 0x9f1cfd0d,
    0x18ba364e}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x00000000, 0x43cba687, 0xc7903cd4, 0x845b9a53, 0xcf270873,
    0x8cecaef4, 0x08b734a7, 0x4b7c9220, 0x9e4f10e6, 0xdd84b661,
    0x59df2c32, 0x1a148ab5, 0x51681895, 0x12a3be12, 0x96f82441,
    0xd53382c6, 0x7d995117, 0x3e52f790, 0xba096dc3, 0xf9c2cb44,
    0xb2be5964, 0xf175ffe3, 0x752e65b0, 0x36e5c337, 0xe3d641f1,
    0xa01de776, 0x24467d25, 0x678ddba2, 0x2cf14982, 0x6f3aef05,
    0xeb617556, 0xa8aad3d1, 0xfa32a32e, 0xb9f905a9, 0x3da29ffa,
    0x7e69397d, 0x3515ab5d, 0x76de0dda, 0xf2859789, 0xb14e310e,
    0x647db3c8, 0x27b6154f, 0xa3ed8f1c, 0xe026299b, 0xab5abbbb,
    0xe8911d3c, 0x6cca876f, 0x2f0121e8, 0x87abf239, 0xc46054be,
    0x403bceed, 0x03f0686a, 0x488cfa4a, 0x0b475ccd, 0x8f1cc69e,
    0xccd76019, 0x19e4e2df, 0x5a2f4458, 0xde74de0b, 0x9dbf788c,
    0xd6c3eaac, 0x95084c2b, 0x1153d678, 0x529870ff, 0xf465465d,
    0xb7aee0da, 0x33f57a89, 0x703edc0e, 0x3b424e2e, 0x7889e8a9,
    0xfcd272fa, 0xbf19d47d, 0x6a2a56bb, 0x29e1f03c, 0xadba6a6f,
    0xee71cce8, 0xa50d5ec8, 0xe6c6f84f, 0x629d621c, 0x2156c49b,
    0x89fc174a, 0xca37b1cd, 0x4e6c2b9e, 0x0da78d19, 0x46db1f39,
    0x0510b9be, 0x814b23ed, 0xc280856a, 0x17b307ac, 0x5478a12b,
    0xd0233b78, 0x93e89dff, 0xd8940fdf, 0x9b5fa958, 0x1f04330b,
    0x5ccf958c, 0x0e57e573, 0x4d9c43f4, 0xc9c7d9a7, 0x8a0c7f20,
    0xc170ed00, 0x82bb4b87, 0x06e0d1d4, 0x452b7753, 0x9018f595,
    0xd3d35312, 0x5788c941, 0x14436fc6, 0x5f3ffde6, 0x1cf45b61,
    0x98afc132, 0xdb6467b5, 0x73ceb464, 0x300512e3, 0xb45e88b0,
    0xf7952e37, 0xbce9bc17, 0xff221a90, 0x7b7980c3, 0x38b22644,
    0xed81a482, 0xae4a0205, 0x2a119856, 0x69da3ed1, 0x22a6acf1,
    0x616d0a76, 0xe5369025, 0xa6fd36a2, 0xe8cb8cba, 0xab002a3d,
    0x2f5bb06e, 0x6c9016e9, 0x27ec84c9, 0x6427224e, 0xe07cb81d,
    0xa3b71e9a, 0x76849c5c, 0x354f3adb, 0xb114a088, 0xf2df060f,
    0xb9a3942f, 0xfa6832a8, 0x7e33a8fb, 0x3df80e7c, 0x9552ddad,
    0xd6997b2a, 0x52c2e179, 0x110947fe, 0x5a75d5de, 0x19be7359,
    0x9de5e90a, 0xde2e4f8d, 0x0b1dcd4b, 0x48d66bcc, 0xcc8df19f,
    0x8f465718, 0xc43ac538, 0x87f163bf, 0x03aaf9ec, 0x40615f6b,
    0x12f92f94, 0x51328913, 0xd5691340, 0x96a2b5c7, 0xddde27e7,
    0x9e158160, 0x1a4e1b33, 0x5985bdb4, 0x8cb63f72, 0xcf7d99f5,
    0x4b2603a6, 0x08eda521, 0x43913701, 0x005a9186, 0x84010bd5,
    0xc7caad52, 0x6f607e83, 0x2cabd804, 0xa8f04257, 0xeb3be4d0,
    0xa04776f0, 0xe38cd077, 0x67d74a24, 0x241ceca3, 0xf12f6e65,
    0xb2e4c8e2, 0x36bf52b1, 0x7574f436, 0x3e086616, 0x7dc3c091,
    0xf9985ac2, 0xba53fc45, 0x1caecae7, 0x5f656c60, 0xdb3ef633,
    0x98f550b4, 0xd389c294, 0x90426413, 0x1419fe40, 0x57d258c7,
    0x82e1da01, 0xc12a7c86, 0x4571e6d5, 0x06ba4052, 0x4dc6d272,
    0x0e0d74f5, 0x8a56eea6, 0xc99d4821, 0x61379bf0, 0x22fc3d77,
    0xa6a7a724, 0xe56c01a3, 0xae109383, 0xeddb3504, 0x6980af57,
    0x2a4b09d0, 0xff788b16, 0xbcb32d91, 0x38e8b7c2, 0x7b231145,
    0x305f8365, 0x739425e2, 0xf7cfbfb1, 0xb4041936, 0xe69c69c9,
    0xa557cf4e, 0x210c551d, 0x62c7f39a, 0x29bb61ba, 0x6a70c73d,
    0xee2b5d6e, 0xade0fbe9, 0x78d3792f, 0x3b18dfa8, 0xbf4345fb,
    0xfc88e37c, 0xb7f4715c, 0xf43fd7db, 0x70644d88, 0x33afeb0f,
    0x9b0538de, 0xd8ce9e59, 0x5c95040a, 0x1f5ea28d, 0x542230ad,
    0x17e9962a, 0x93b20c79, 0xd079aafe, 0x054a2838, 0x46818ebf,
    0xc2da14ec, 0x8111b26b, 0xca6d204b, 0x89a686cc, 0x0dfd1c9f,
    0x4e36ba18},
   {0x00000000, 0xe1b652ef, 0x836bd405, 0x62dd86ea, 0x06d7a80b,
    0xe761fae4, 0x85bc7c0e, 0x640a2ee1, 0x0cae5117, 0xed1803f8,
    0x8fc58512, 0x6e73d7fd, 0x0a79f91c, 0xebcfabf3, 0x89122d19,
    0x68a47ff6, 0x185ca32e, 0xf9eaf1c1, 0x9b37772b, 0x7a8125c4,
    0x1e8b0b25, 0xff3d59ca, 0x9de0df20, 0x7c568dcf, 0x14f2f239,
    0xf544a0d6, 0x9799263c, 0x762f74d3, 0x12255a32, 0xf39308dd,
    0x914e8e37, 0x70f8dcd8, 0x30b8465d, 0xd10e14b2, 0xb3d39258,
    0x5265c0b7, 0x366fee56, 0xd7d9bcb9, 0xb5043a53, 0x54b268bc,
    0x3c16174a, 0xdda045a5, 0xbf7dc34f, 0x5ecb91a0, 0x3ac1bf41,
    0xdb77edae, 0xb9aa6b44, 0x581c39ab, 0x28e4e573, 0xc952b79c,
    0xab8f3176, 0x4a396399, 0x2e334d78, 0xcf851f97, 0xad58997d,
    0x4ceecb92, 0x244ab464, 0xc5fce68b, 0xa7216061, 0x4697328e,
    0x229d1c6f, 0xc32b4e80, 0xa1f6c86a, 0x40409a85, 0x60708dba,
    0x81c6df55, 0xe31b59bf, 0x02ad0b50, 0x66a725b1, 0x8711775e,
    0xe5ccf1b4, 0x047aa35b, 0x6cdedcad, 0x8d688e42, 0xefb508a8,
    0x0e035a47, 0x6a0974a6, 0x8bbf2649, 0xe962a0a3, 0x08d4f24c,
    0x782c2e94, 0x999a7c7b, 0xfb47fa91, 0x1af1a87e, 0x7efb869f,
    0x9f4dd470, 0xfd90529a, 0x1c260075, 0x74827f83, 0x95342d6c,
    0xf7e9ab86, 0x165ff969, 0x7255d788, 0x93e38567, 0xf13e038d,
    0x10885162, 0x50c8cbe7, 0xb17e9908, 0xd3a31fe2, 0x32154d0d,
    0x561f63ec, 0xb7a93103, 0xd574b7e9, 0x34c2e506, 0x5c669af0,
    0xbdd0c81f, 0xdf0d4ef5, 0x3ebb1c1a, 0x5ab132fb, 0xbb076014,
    0xd9dae6fe, 0x386cb411, 0x489468c9, 0xa9223a26, 0xcbffbccc,
    0x2a49ee23, 0x4e43c0c2, 0xaff5922d, 0xcd2814c7, 0x2c9e4628,
    0x443a39de, 0xa58c6b31, 0xc751eddb, 0x26e7bf34, 0x42ed91d5,
    0xa35bc33a, 0xc18645d0, 0x2030173f, 0x81e66bae, 0x60503941,
    0x028dbfab, 0xe33bed44, 0x8731c3a5, 0x6687914a, 0x045a17a0,
    0xe5ec454f, 0x8d483ab9, 0x6cfe6856, 0x0e23eebc, 0xef95bc53,
    0x8b9f92b2, 0x6a29c05d, 0x08f446b7, 0xe9421458, 0x99bac880,
    0x780c9a6f, 0x1ad11c85, 0xfb674e6a, 0x9f6d608b, 0x7edb3264,
    0x1c06b48e, 0xfdb0e661, 0x95149997, 0x74a2cb78, 0x167f4d92,
    0xf7c91f7d, 0x93c3319c, 0x72756373, 0x10a8e599, 0xf11eb776,
    0xb15e2df3, 0x50e87f1c, 0x3235f9f6, 0xd383ab19, 0xb78985f8,
    0x563fd717, 0x34e251fd, 0xd5540312, 0xbdf07ce4, 0x5c462e0b,
    0x3e9ba8e1, 0xdf2dfa0e, 0xbb27d4ef, 0x5a918600, 0x384c00ea,
    0xd9fa5205, 0xa9028edd, 0x48b4dc32, 0x2a695ad8, 0xcbdf0837,
    0xafd526d6, 0x4e637439, 0x2cbef2d3, 0xcd08a03c, 0xa5acdfca,
    0x441a8d25, 0x26c70bcf, 0xc7715920, 0xa37b77c1, 0x42cd252e,
    0x2010a3c4, 0xc1a6f12b, 0xe196e614, 0x0020b4fb, 0x62fd3211,
    0x834b60fe, 0xe7414e1f, 0x06f71cf0, 0x642a9a1a, 0x859cc8f5,
    0xed38b703, 0x0c8ee5ec, 0x6e536306, 0x8fe531e9, 0xebef1f08,
    0x0a594de7, 0x6884cb0d, 0x893299e2, 0xf9ca453a, 0x187c17d5,
    0x7aa1913f, 0x9b17c3d0, 0xff1ded31, 0x1eabbfde, 0x7c763934,
    0x9dc06bdb, 0xf564142d, 0x14d246c2, 0x760fc028, 0x97b992c7,
    0xf3b3bc26, 0x1205eec9, 0x70d86823, 0x916e3acc, 0xd12ea049,
    0x3098f2a6, 0x5245744c, 0xb3f326a3, 0xd7f90842, 0x364f5aad,
    0x5492dc47, 0xb5248ea8, 0xdd80f15e, 0x3c36a3b1, 0x5eeb255b,
    0xbf5d77b4, 0xdb575955, 0x3ae10bba, 0x583c8d50, 0xb98adfbf,
    0xc9720367, 0x28c45188, 0x4a19d762, 0xabaf858d, 0xcfa5ab6c,
    0x2e13f983, 0x4cce7f69, 0xad782d86, 0xc5dc5270, 0x246a009f,
    0x46b78675, 0xa701d49a, 0xc30bfa7b, 0x22bda894, 0x40602e7e,
    0xa1d67c91},
   {0x00000000, 0x5880e2d7, 0xf106b474, 0xa98656a3, 0xe20d68e9,
    0xba8d8a3e, 0x130bdc9d, 0x4b8b3e4a, 0x851da109, 0xdd9d43de,
    0x741b157d, 0x2c9bf7aa, 0x6710c9e0, 0x3f902b37, 0x96167d94,
    0xce969f43, 0x0a3b4213, 0x52bba0c4, 0xfb3df667, 0xa3bd14b0,
    0xe8362afa, 0xb0b6c82d, 0x19309e8e, 0x41b07c59, 0x8f26e31a,
    0xd7a601cd, 0x7e20576e, 0x26a0b5b9, 0x6d2b8bf3, 0x35ab6924,
    0x9c2d3f87, 0xc4addd50, 0x14768426, 0x4cf666f1, 0xe5703052,
    0xbdf0d285, 0xf67beccf, 0xaefb0e18, 0x077d58bb, 0x5ffdba6c,
    0x916b252f, 0xc9ebc7f8, 0x606d915b, 0x38ed738c, 0x73664dc6,
    0x2be6af11, 0x8260f9b2, 0xdae01b65, 0x1e4dc635, 0x46cd24e2,
    0xef4b7241, 0xb7cb9096, 0xfc40aedc, 0xa4c04c0b, 0x0d461aa8,
    0x55c6f87f, 0x9b50673c, 0xc3d085eb, 0x6a56d348, 0x32d6319f,
    0x795d0fd5, 0x21dded02, 0x885bbba1, 0xd0db5976, 0x28ec084d,
    0x706cea9a, 0xd9eabc39, 0x816a5eee, 0xcae160a4, 0x92618273,
    0x3be7d4d0, 0x63673607, 0xadf1a944, 0xf5714b93, 0x5cf71d30,
    0x0477ffe7, 0x4ffcc1ad, 0x177c237a, 0xbefa75d9, 0xe67a970e,
    0x22d74a5e, 0x7a57a889, 0xd3d1fe2a, 0x8b511cfd, 0xc0da22b7,
    0x985ac060, 0x31dc96c3, 0x695c7414, 0xa7caeb57, 0xff4a0980,
    0x56cc5f23, 0x0e4cbdf4, 0x45c783be, 0x1d476169, 0xb4c137ca,
    0xec41d51d, 0x3c9a8c6b, 0x641a6ebc, 0xcd9c381f, 0x951cdac8,
    0xde97e482, 0x86170655, 0x2f9150f6, 0x7711b221, 0xb9872d62,
    0xe107cfb5, 0x48819916, 0x10017bc1, 0x5b8a458b, 0x030aa75c,
    0xaa8cf1ff, 0xf20c1328, 0x36a1ce78, 0x6e212caf, 0xc7a77a0c,
    0x9f2798db, 0xd4aca691, 0x8c2c4446, 0x25aa12e5, 0x7d2af032,
    0xb3bc6f71, 0xeb3c8da6, 0x42badb05, 0x1a3a39d2, 0x51b10798,
    0x0931e54f, 0xa0b7b3ec, 0xf837513b, 0x50d8119a, 0x0858f34d,
    0xa1dea5ee, 0xf95e4739, 0xb2d57973, 0xea559ba4, 0x43d3cd07,
    0x1b532fd0, 0xd5c5b093, 0x8d455244, 0x24c304e7, 0x7c43e630,
    0x37c8d87a, 0x6f483aad, 0xc6ce6c0e, 0x9e4e8ed9, 0x5ae35389,
    0x0263b15e, 0xabe5e7fd, 0xf365052a, 0xb8ee3b60, 0xe06ed9b7,
    0x49e88f14, 0x11686dc3, 0xdffef280, 0x877e1057, 0x2ef846f4,
    0x7678a423, 0x3df39a69, 0x657378be, 0xccf52e1d, 0x9475ccca,
    0x44ae95bc, 0x1c2e776b, 0xb5a821c8, 0xed28c31f, 0xa6a3fd55,
    0xfe231f82, 0x57a54921, 0x0f25abf6, 0xc1b334b5, 0x9933d662,
    0x30b580c1, 0x68356216, 0x23be5c5c, 0x7b3ebe8b, 0xd2b8e828,
    0x8a380aff, 0x4e95d7af, 0x16153578, 0xbf9363db, 0xe713810c,
    0xac98bf46, 0xf4185d91, 0x5d9e0b32, 0x051ee9e5, 0xcb8876a6,
    0x93089471, 0x3a8ec2d2, 0x620e2005, 0x29851e4f, 0x7105fc98,
    0xd883aa3b, 0x800348ec, 0x783419d7, 0x20b4fb00, 0x8932ada3,
    0xd1b24f74, 0x9a39713e, 0xc2b993e9, 0x6b3fc54a, 0x33bf279d,
    0xfd29b8de, 0xa5a95a09, 0x0c2f0caa, 0x54afee7d, 0x1f24d037,
    0x47a432e0, 0xee226443, 0xb6a28694, 0x720f5bc4, 0x2a8fb913,
    0x8309efb0, 0xdb890d67, 0x9002332d, 0xc882d1fa, 0x61048759,
    0x3984658e, 0xf712facd, 0xaf92181a, 0x06144eb9, 0x5e94ac6e,
    0x151f9224, 0x4d9f70f3, 0xe4192650, 0xbc99c487, 0x6c429df1,
    0x34c27f26, 0x9d442985, 0xc5c4cb52, 0x8e4ff518, 0xd6cf17cf,
    0x7f49416c, 0x27c9a3bb, 0xe95f3cf8, 0xb1dfde2f, 0x1859888c,
    0x40d96a5b, 0x0b525411, 0x53d2b6c6, 0xfa54e065, 0xa2d402b2,
    0x6679dfe2, 0x3ef93d35, 0x977f6b96, 0xcfff8941, 0x8474b70b,
    0xdcf455dc, 0x7572037f, 0x2df2e1a8, 0xe3647eeb, 0xbbe49c3c,
    0x1262ca9f, 0x4ae22848, 0x01691602, 0x59e9f4d5, 0xf06fa276,
    0xa8ef40a1},
   {0x00000000, 0x463b6765, 0x8c76ceca, 0xca4da9af, 0x59ebed4e,
    0x1fd08a2b, 0xd59d2384, 0x93a644e1, 0xb2d6db9d, 0xf4edbcf8,
    0x3ea01557, 0x789b7232, 0xeb3d36d3, 0xad0651b6, 0x674bf819,
    0x21709f7c, 0x25abc6e0, 0x6390a185, 0xa9dd082a, 0xefe66f4f,
    0x7c402bae, 0x3a7b4ccb, 0xf036e564, 0xb60d8201, 0x977d1d7d,
    0xd1467a18, 0x1b0bd3b7, 0x5d30b4d2, 0xce96f033, 0x88ad9756,
    0x42e03ef9, 0x04db599c, 0x0b50fc1a, 0x4d6b9b7f, 0x872632d0,
    0xc11d55b5, 0x52bb1154, 0x14807631, 0xdecddf9e, 0x98f6b8fb,
    0xb9862787, 0xffbd40e2, 0x35f0e94d, 0x73cb8e28, 0xe06dcac9,
    0xa656adac, 0x6c1b0403, 0x2a206366, 0x2efb3afa, 0x68c05d9f,
    0xa28df430, 0xe4b69355, 0x7710d7b4, 0x312bb0d1, 0xfb66197e,
    0xbd5d7e1b, 0x9c2de167, 0xda168602, 0x105b2fad, 0x566048c8,
    0xc5c60c29, 0x83fd6b4c, 0x49b0c2e3, 0x0f8ba586, 0x16a0f835,
    0x509b9f50, 0x9ad636ff, 0xdced519a, 0x4f4b157b, 0x0970721e,
    0xc33ddbb1, 0x8506bcd4, 0xa47623a8, 0xe24d44cd, 0x2800ed62,
    0x6e3b8a07, 0xfd9dcee6, 0xbba6a983, 0x71eb002c, 0x37d06749,
    0x330b3ed5, 0x753059b0, 0xbf7df01f, 0xf946977a, 0x6ae0d39b,
    0x2cdbb4fe, 0xe6961d51, 0xa0ad7a34, 0x81dde548, 0xc7e6822d,
    0x0dab2b82, 0x4b904ce7, 0xd8360806, 0x9e0d6f63, 0x5440c6cc,
    0x127ba1a9, 0x1df0042f, 0x5bcb634a, 0x9186cae5, 0xd7bdad80,
    0x441be961, 0x02208e04, 0xc86d27ab, 0x8e5640ce, 0xaf26dfb2,
    0xe91db8d7, 0x23501178, 0x656b761d, 0xf6cd32fc, 0xb0f65599,
    0x7abbfc36, 0x3c809b53, 0x385bc2cf, 0x7e60a5aa, 0xb42d0c05,
    0xf2166b60, 0x61b02f81, 0x278b48e4, 0xedc6e14b, 0xabfd862e,
    0x8a8d1952, 0xccb67e37, 0x06fbd798, 0x40c0b0fd, 0xd366f41c,
    0x955d9379, 0x5f103ad6, 0x192b5db3, 0x2c40f16b, 0x6a7b960e,
    0xa0363fa1, 0xe60d58c4, 0x75ab1c25, 0x33907b40, 0xf9ddd2ef,
    0xbfe6b58a, 0x9e962af6, 0xd8ad4d93, 0x12e0e43c, 0x54db8359,
    0xc77dc7b8, 0x8146a0dd, 0x4b0b0972, 0x0d306e17, 0x09eb378b,
    0x4fd050ee, 0x859df941, 0xc3a69e24, 0x5000dac5, 0x163bbda0,
    0xdc76140f, 0x9a4d736a, 0xbb3dec16, 0xfd068b73, 0x374b22dc,
    0x717045b9, 0xe2d60158, 0xa4ed663d, 0x6ea0cf92, 0x289ba8f7,
    0x27100d71, 0x612b6a14, 0xab66c3bb, 0xed5da4de, 0x7efbe03f,
    0x38c0875a, 0xf28d2ef5, 0xb4b64990, 0x95c6d6ec, 0xd3fdb189,
    0x19b01826, 0x5f8b7f43, 0xcc2d3ba2, 0x8a165cc7, 0x405bf568,
    0x0660920d, 0x02bbcb91, 0x4480acf4, 0x8ecd055b, 0xc8f6623e,
    0x5b5026df, 0x1d6b41ba, 0xd726e815, 0x911d8f70, 0xb06d100c,
    0xf6567769, 0x3c1bdec6, 0x7a20b9a3, 0xe986fd42, 0xafbd9a27,
    0x65f03388, 0x23cb54ed, 0x3ae0095e, 0x7cdb6e3b, 0xb696c794,
    0xf0ada0f1, 0x630be410, 0x25308375, 0xef7d2ada, 0xa9464dbf,
    0x8836d2c3, 0xce0db5a6, 0x04401c09, 0x427b7b6c, 0xd1dd3f8d,
    0x97e658e8, 0x5dabf147, 0x1b909622, 0x1f4bcfbe, 0x5970a8db,
    0x933d0174, 0xd5066611, 0x46a022f0, 0x009b4595, 0xcad6ec3a,
    0x8ced8b5f, 0xad9d1423, 0xeba67346, 0x21ebdae9, 0x67d0bd8c,
    0xf476f96d, 0xb24d9e08, 0x780037a7, 0x3e3b50c2, 0x31b0f544,
    0x778b9221, 0xbdc63b8e, 0xfbfd5ceb, 0x685b180a, 0x2e607f6f,
    0xe42dd6c0, 0xa216b1a5, 0x83662ed9, 0xc55d49bc, 0x0f10e013,
    0x492b8776, 0xda8dc397, 0x9cb6a4f2, 0x56fb0d5d, 0x10c06a38,
    0x141b33a4, 0x522054c1, 0x986dfd6e, 0xde569a0b, 0x4df0deea,
    0x0bcbb98f, 0xc1861020, 0x87bd7745, 0xa6cde839, 0xe0f68f5c,
    0x2abb26f3, 0x6c804196, 0xff260577, 0xb91d6212, 0x7350cbbd,
    0x356bacd8}};

#endif

#endif

#if N == 6

#if W == 8

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0x3db1ecdc, 0x7b63d9b8, 0x46d23564, 0xf6c7b370,
    0xcb765fac, 0x8da46ac8, 0xb0158614, 0x36fe60a1, 0x0b4f8c7d,
    0x4d9db919, 0x702c55c5, 0xc039d3d1, 0xfd883f0d, 0xbb5a0a69,
    0x86ebe6b5, 0x6dfcc142, 0x504d2d9e, 0x169f18fa, 0x2b2ef426,
    0x9b3b7232, 0xa68a9eee, 0xe058ab8a, 0xdde94756, 0x5b02a1e3,
    0x66b34d3f, 0x2061785b, 0x1dd09487, 0xadc51293, 0x9074fe4f,
    0xd6a6cb2b, 0xeb1727f7, 0xdbf98284, 0xe6486e58, 0xa09a5b3c,
    0x9d2bb7e0, 0x2d3e31f4, 0x108fdd28, 0x565de84c, 0x6bec0490,
    0xed07e225, 0xd0b60ef9, 0x96643b9d, 0xabd5d741, 0x1bc05155,
    0x2671bd89, 0x60a388ed, 0x5d126431, 0xb60543c6, 0x8bb4af1a,
    0xcd669a7e, 0xf0d776a2, 0x40c2f0b6, 0x7d731c6a, 0x3ba1290e,
    0x0610c5d2, 0x80fb2367, 0xbd4acfbb, 0xfb98fadf, 0xc6291603,
    0x763c9017, 0x4b8d7ccb, 0x0d5f49af, 0x30eea573, 0x6c820349,
    0x5133ef95, 0x17e1daf1, 0x2a50362d, 0x9a45b039, 0xa7f45ce5,
    0xe1266981, 0xdc97855d, 0x5a7c63e8, 0x67cd8f34, 0x211fba50,
    0x1cae568c, 0xacbbd098, 0x910a3c44, 0xd7d80920, 0xea69e5fc,
    0x017ec20b, 0x3ccf2ed7, 0x7a1d1bb3, 0x47acf76f, 0xf7b9717b,
    0xca089da7, 0x8cdaa8c3, 0xb16b441f, 0x3780a2aa, 0x0a314e76,
    0x4ce37b12, 0x715297ce, 0xc14711da, 0xfcf6fd06, 0xba24c862,
    0x879524be, 0xb77b81cd, 0x8aca6d11, 0xcc185875, 0xf1a9b4a9,
    0x41bc32bd, 0x7c0dde61, 0x3adfeb05, 0x076e07d9, 0x8185e16c,
    0xbc340db0, 0xfae638d4, 0xc757d408, 0x7742521c, 0x4af3bec0,
    0x0c218ba4, 0x31906778, 0xda87408f, 0xe736ac53, 0xa1e49937,
    0x9c5575eb, 0x2c40f3ff, 0x11f11f23, 0x57232a47, 0x6a92c69b,
    0xec79202e, 0xd1c8ccf2, 0x971af996, 0xaaab154a, 0x1abe935e,
    0x270f7f82, 0x61dd4ae6, 0x5c6ca63a, 0xd9040692, 0xe4b5ea4e,
    0xa267df2a, 0x9fd633f6, 0x2fc3b5e2, 0x1272593e, 0x54a06c5a,
    0x69118086, 0xeffa6633, 0xd24b8aef, 0x9499bf8b, 0xa9285357,
    0x193dd543, 0x248c399f, 0x625e0cfb, 0x5fefe027, 0xb4f8c7d0,
    0x89492b0c, 0xcf9b1e68, 0xf22af2b4, 0x423f74a0, 0x7f8e987c,
    0x395cad18, 0x04ed41c4, 0x8206a771, 0xbfb74bad, 0xf9657ec9,
    0xc4d49215, 0x74c11401, 0x4970f8dd, 0x0fa2cdb9, 0x32132165,
    0x02fd8416, 0x3f4c68ca, 0x799e5dae, 0x442fb172, 0xf43a3766,
    0xc98bdbba, 0x8f59eede, 0xb2e80202, 0x3403e4b7, 0x09b2086b,
    0x4f603d0f, 0x72d1d1d3, 0xc2c457c7, 0xff75bb1b, 0xb9a78e7f,
    0x841662a3, 0x6f014554, 0x52b0a988, 0x14629cec, 0x29d37030,
    0x99c6f624, 0xa4771af8, 0xe2a52f9c, 0xdf14c340, 0x59ff25f5,
    0x644ec929, 0x229cfc4d, 0x1f2d1091, 0xaf389685, 0x92897a59,
    0xd45b4f3d, 0xe9eaa3e1, 0xb58605db, 0x8837e907, 0xcee5dc63,
    0xf35430bf, 0x4341b6ab, 0x7ef05a77, 0x38226f13, 0x059383cf,
    0x8378657a, 0xbec989a6, 0xf81bbcc2, 0xc5aa501e, 0x75bfd60a,
    0x480e3ad6, 0x0edc0fb2, 0x336de36e, 0xd87ac499, 0xe5cb2845,
    0xa3191d21, 0x9ea8f1fd, 0x2ebd77e9, 0x130c9b35, 0x55deae51,
    0x686f428d, 0xee84a438, 0xd33548e4, 0x95e77d80, 0xa856915c,
    0x18431748, 0x25f2fb94, 0x6320cef0, 0x5e91222c, 0x6e7f875f,
    0x53ce6b83, 0x151c5ee7, 0x28adb23b, 0x98b8342f, 0xa509d8f3,
    0xe3dbed97, 0xde6a014b, 0x5881e7fe, 0x65300b22, 0x23e23e46,
    0x1e53d29a, 0xae46548e, 0x93f7b852, 0xd5258d36, 0xe89461ea,
    0x0383461d, 0x3e32aac1, 0x78e09fa5, 0x45517379, 0xf544f56d,
    0xc8f519b1, 0x8e272cd5, 0xb396c009, 0x357d26bc, 0x08ccca60,
    0x4e1eff04, 0x73af13d8, 0xc3ba95cc, 0xfe0b7910, 0xb8d94c74,
    0x8568a0a8},
   {0x00000000, 0x69790b65, 0xd2f216ca, 0xbb8b1daf, 0x7e952bd5,
    0x17ec20b0, 0xac673d1f, 0xc51e367a, 0xfd2a57aa, 0x94535ccf,
    0x2fd84160, 0x46a14a05, 0x83bf7c7f, 0xeac6771a, 0x514d6ab5,
    0x383461d0, 0x2125a915, 0x485ca270, 0xf3d7bfdf, 0x9aaeb4ba,
    0x5fb082c0, 0x36c989a5, 0x8d42940a, 0xe43b9f6f, 0xdc0ffebf,
    0xb576f5da, 0x0efde875, 0x6784e310, 0xa29ad56a, 0xcbe3de0f,
    0x7068c3a0, 0x1911c8c5, 0x424b522a, 0x2b32594f, 0x90b944e0,
    0xf9c04f85, 0x3cde79ff, 0x55a7729a, 0xee2c6f35, 0x87556450,
    0xbf610580, 0xd6180ee5, 0x6d93134a, 0x04ea182f, 0xc1f42e55,
    0xa88d2530, 0x1306389f, 0x7a7f33fa, 0x636efb3f, 0x0a17f05a,
    0xb19cedf5, 0xd8e5e690, 0x1dfbd0ea, 0x7482db8f, 0xcf09c620,
    0xa670cd45, 0x9e44ac95, 0xf73da7f0, 0x4cb6ba5f, 0x25cfb13a,
    0xe0d18740, 0x89a88c25, 0x3223918a, 0x5b5a9aef, 0x8496a454,
    0xedefaf31, 0x5664b29e, 0x3f1db9fb, 0xfa038f81, 0x937a84e4,
    0x28f1994b, 0x4188922e, 0x79bcf3fe, 0x10c5f89b, 0xab4ee534,
    0xc237ee51, 0x0729d82b, 0x6e50d34e, 0xd5dbcee1, 0xbca2c584,
    0xa5b30d41, 0xccca0624, 0x77411b8b, 0x1e3810ee, 0xdb262694,
    0xb25f2df1, 0x09d4305e, 0x60ad3b3b, 0x58995aeb, 0x31e0518e,
    0x8a6b4c21, 0xe3124744, 0x260c713e, 0x4f757a5b, 0xf4fe67f4,
    0x9d876c91, 0xc6ddf67e, 0xafa4fd1b, 0x142fe0b4, 0x7d56ebd1,
    0xb848ddab, 0xd131d6ce, 0x6abacb61, 0x03c3c004, 0x3bf7a1d4,
    0x528eaab1, 0xe905b71e, 0x807cbc7b, 0x45628a01, 0x2c1b8164,
    0x97909ccb, 0xfee997ae, 0xe7f85f6b, 0x8e81540e, 0x350a49a1,
    0x5c7342c4, 0x996d74be, 0xf0147fdb, 0x4b9f6274, 0x22e66911,
    0x1ad208c1, 0x73ab03a4, 0xc8201e0b, 0xa159156e, 0x64472314,
    0x0d3e2871, 0xb6b535de, 0xdfcc3ebb, 0xd25c4ee9, 0xbb25458c,
    0x00ae5823, 0x69d75346, 0xacc9653c, 0xc5b06e59, 0x7e3b73f6,
    0x17427893, 0x2f761943, 0x460f1226, 0xfd840f89, 0x94fd04ec,
    0x51e33296, 0x389a39f3, 0x8311245c, 0xea682f39, 0xf379e7fc,
    0x9a00ec99, 0x218bf136, 0x48f2fa53, 0x8deccc29, 0xe495c74c,
    0x5f1edae3, 0x3667d186, 0x0e53b056, 0x672abb33, 0xdca1a69c,
    0xb5d8adf9, 0x70c69b83, 0x19bf90e6, 0xa2348d49, 0xcb4d862c,
    0x90171cc3, 0xf96e17a6, 0x42e50a09, 0x2b9c016c, 0xee823716,
    0x87fb3c73, 0x3c7021dc, 0x55092ab9, 0x6d3d4b69, 0x0444400c,
    0xbfcf5da3, 0xd6b656c6, 0x13a860bc, 0x7ad16bd9, 0xc15a7676,
    0xa8237d13, 0xb132b5d6, 0xd84bbeb3, 0x63c0a31c, 0x0ab9a879,
    0xcfa79e03, 0xa6de9566, 0x1d5588c9, 0x742c83ac, 0x4c18e27c,
    0x2561e919, 0x9eeaf4b6, 0xf793ffd3, 0x328dc9a9, 0x5bf4c2cc,
    0xe07fdf63, 0x8906d406, 0x56caeabd, 0x3fb3e1d8, 0x8438fc77,
    0xed41f712, 0x285fc168, 0x4126ca0d, 0xfaadd7a2, 0x93d4dcc7,
    0xabe0bd17, 0xc299b672, 0x7912abdd, 0x106ba0b8, 0xd57596c2,
    0xbc0c9da7, 0x07878008, 0x6efe8b6d, 0x77ef43a8, 0x1e9648cd,
    0xa51d5562, 0xcc645e07, 0x097a687d, 0x60036318, 0xdb887eb7,
    0xb2f175d2, 0x8ac51402, 0xe3bc1f67, 0x583702c8, 0x314e09ad,
    0xf4503fd7, 0x9d2934b2, 0x26a2291d, 0x4fdb2278, 0x1481b897,
    0x7df8b3f2, 0xc673ae5d, 0xaf0aa538, 0x6a149342, 0x036d9827,
    0xb8e68588, 0xd19f8eed, 0xe9abef3d, 0x80d2e458, 0x3b59f9f7,
    0x5220f292, 0x973ec4e8, 0xfe47cf8d, 0x45ccd222, 0x2cb5d947,
    0x35a41182, 0x5cdd1ae7, 0xe7560748, 0x8e2f0c2d, 0x4b313a57,
    0x22483132, 0x99c32c9d, 0xf0ba27f8, 0xc88e4628, 0xa1f74d4d,
    0x1a7c50e2, 0x73055b87, 0xb61b6dfd, 0xdf626698, 0x64e97b37,
    0x0d907052},
   {0x00000000, 0x7fc99b93, 0xff933726, 0x805aacb5, 0x2457680d,
    0x5b9ef39e, 0xdbc45f2b, 0xa40dc4b8, 0x48aed01a, 0x37674b89,
    0xb73de73c, 0xc8f47caf, 0x6cf9b817, 0x13302384, 0x936a8f31,
    0xeca314a2, 0x915da034, 0xee943ba7, 0x6ece9712, 0x11070c81,
    0xb50ac839, 0xcac353aa, 0x4a99ff1f, 0x3550648c, 0xd9f3702e,
    0xa63aebbd, 0x26604708, 0x59a9dc9b, 0xfda41823, 0x826d83b0,
    0x02372f05, 0x7dfeb496, 0xf9ca4629, 0x8603ddba, 0x0659710f,
    0x7990ea9c, 0xdd9d2e24, 0xa254b5b7, 0x220e1902, 0x5dc78291,
    0xb1649633, 0xcead0da0, 0x4ef7a115, 0x313e3a86, 0x9533fe3e,
    0xeafa65ad, 0x6aa0c918, 0x1569528b, 0x6897e61d, 0x175e7d8e,
    0x9704d13b, 0xe8cd4aa8, 0x4cc08e10, 0x33091583, 0xb353b936,
    0xcc9a22a5, 0x20393607, 0x5ff0ad94, 0xdfaa0121, 0xa0639ab2,
    0x046e5e0a, 0x7ba7c599, 0xfbfd692c, 0x8434f2bf, 0x28e58a13,
    0x572c1180, 0xd776bd35, 0xa8bf26a6, 0x0cb2e21e, 0x737b798d,
    0xf321d538, 0x8ce84eab, 0x604b5a09, 0x1f82c19a, 0x9fd86d2f,
    0xe011f6bc, 0x441c3204, 0x3bd5a997, 0xbb8f0522, 0xc4469eb1,
    0xb9b82a27, 0xc671b1b4, 0x462b1d01, 0x39e28692, 0x9def422a,
    0xe226d9b9, 0x627c750c, 0x1db5ee9f, 0xf116fa3d, 0x8edf61ae,
    0x0e85cd1b, 0x714c5688, 0xd5419230, 0xaa8809a3, 0x2ad2a516,
    0x551b3e85, 0xd12fcc3a, 0xaee657a9, 0x2ebcfb1c, 0x5175608f,
    0xf578a437, 0x8ab13fa4, 0x0aeb9311, 0x75220882, 0x99811c20,
    0xe64887b3, 0x66122b06, 0x19dbb095, 0xbdd6742d, 0xc21fefbe,
    0x4245430b, 0x3d8cd898, 0x40726c0e, 0x3fbbf79d, 0xbfe15b28,
    0xc028c0bb, 0x64250403, 0x1bec9f90, 0x9bb63325, 0xe47fa8b6,
    0x08dcbc14, 0x77152787, 0xf74f8b32, 0x888610a1, 0x2c8bd419,
    0x53424f8a, 0xd318e33f, 0xacd178ac, 0x51cb1426, 0x2e028fb5,
    0xae582300, 0xd191b893, 0x759c7c2b, 0x0a55e7b8, 0x8a0f4b0d,
    0xf5c6d09e, 0x1965c43c, 0x66ac5faf, 0xe6f6f31a, 0x993f6889,
    0x3d32ac31, 0x42fb37a2, 0xc2a19b17, 0xbd680084, 0xc096b412,
    0xbf5f2f81, 0x3f058334, 0x40cc18a7, 0xe4c1dc1f, 0x9b08478c,
    0x1b52eb39, 0x649b70aa, 0x88386408, 0xf7f1ff9b, 0x77ab532e,
    0x0862c8bd, 0xac6f0c05, 0xd3a69796, 0x53fc3b23, 0x2c35a0b0,
    0xa801520f, 0xd7c8c99c, 0x57926529, 0x285bfeba, 0x8c563a02,
    0xf39fa191, 0x73c50d24, 0x0c0c96b7, 0xe0af8215, 0x9f661986,
    0x1f3cb533, 0x60f52ea0, 0xc4f8ea18, 0xbb31718b, 0x3b6bdd3e,
    0x44a246ad, 0x395cf23b, 0x469569a8, 0xc6cfc51d, 0xb9065e8e,
    0x1d0b9a36, 0x62c201a5, 0xe298ad10, 0x9d513683, 0x71f22221,
    0x0e3bb9b2, 0x8e611507, 0xf1a88e94, 0x55a54a2c, 0x2a6cd1bf,
    0xaa367d0a, 0xd5ffe699, 0x792e9e35, 0x06e705a6, 0x86bda913,
    0xf9743280, 0x5d79f638, 0x22b06dab, 0xa2eac11e, 0xdd235a8d,
    0x31804e2f, 0x4e49d5bc, 0xce137909, 0xb1dae29a, 0x15d72622,
    0x6a1ebdb1, 0xea441104, 0x958d8a97, 0xe8733e01, 0x97baa592,
    0x17e00927, 0x682992b4, 0xcc24560c, 0xb3edcd9f, 0x33b7612a,
    0x4c7efab9, 0xa0ddee1b, 0xdf147588, 0x5f4ed93d, 0x208742ae,
    0x848a8616, 0xfb431d85, 0x7b19b130, 0x04d02aa3, 0x80e4d81c,
    0xff2d438f, 0x7f77ef3a, 0x00be74a9, 0xa4b3b011, 0xdb7a2b82,
    0x5b208737, 0x24e91ca4, 0xc84a0806, 0xb7839395, 0x37d93f20,
    0x4810a4b3, 0xec1d600b, 0x93d4fb98, 0x138e572d, 0x6c47ccbe,
    0x11b97828, 0x6e70e3bb, 0xee2a4f0e, 0x91e3d49d, 0x35ee1025,
    0x4a278bb6, 0xca7d2703, 0xb5b4bc90, 0x5917a832, 0x26de33a1,
    0xa6849f14, 0xd94d0487, 0x7d40c03f, 0x02895bac, 0x82d3f719,
    0xfd1a6c8a},
   {0x00000000, 0xa396284c, 0x9c5d56d9, 0x3fcb7e95, 0xe3cbabf3,
    0x405d83bf, 0x7f96fd2a, 0xdc00d566, 0x1ce651a7, 0xbf7079eb,
    0x80bb077e, 0x232d2f32, 0xff2dfa54, 0x5cbbd218, 0x6370ac8d,
    0xc0e684c1, 0x39cca34e, 0x9a5a8b02, 0xa591f597, 0x0607dddb,
    0xda0708bd, 0x799120f1, 0x465a5e64, 0xe5cc7628, 0x252af2e9,
    0x86bcdaa5, 0xb977a430, 0x1ae18c7c, 0xc6e1591a, 0x65777156,
    0x5abc0fc3, 0xf92a278f, 0x7399469c, 0xd00f6ed0, 0xefc41045,
    0x4c523809, 0x9052ed6f, 0x33c4c523, 0x0c0fbbb6, 0xaf9993fa,
    0x6f7f173b, 0xcce93f77, 0xf32241e2, 0x50b469ae, 0x8cb4bcc8,
    0x2f229484, 0x10e9ea11, 0xb37fc25d, 0x4a55e5d2, 0xe9c3cd9e,
    0xd608b30b, 0x759e9b47, 0xa99e4e21, 0x0a08666d, 0x35c318f8,
    0x965530b4, 0x56b3b475, 0xf5259c39, 0xcaeee2ac, 0x6978cae0,
    0xb5781f86, 0x16ee37ca, 0x2925495f, 0x8ab36113, 0xe7328d38,
    0x44a4a574, 0x7b6fdbe1, 0xd8f9f3ad, 0x04f926cb, 0xa76f0e87,
    0x98a47012, 0x3b32585e, 0xfbd4dc9f, 0x5842f4d3, 0x67898a46,
    0xc41fa20a, 0x181f776c, 0xbb895f20, 0x844221b5, 0x27d409f9,
    0xdefe2e76, 0x7d68063a, 0x42a378af, 0xe13550e3, 0x3d358585,
    0x9ea3adc9, 0xa168d35c, 0x02fefb10, 0xc2187fd1, 0x618e579d,
    0x5e452908, 0xfdd30144, 0x21d3d422, 0x8245fc6e, 0xbd8e82fb,
    0x1e18aab7, 0x94abcba4, 0x373de3e8, 0x08f69d7d, 0xab60b531,
    0x77606057, 0xd4f6481b, 0xeb3d368e, 0x48ab1ec2, 0x884d9a03,
    0x2bdbb24f, 0x1410ccda, 0xb786e496, 0x6b8631f0, 0xc81019bc,
    0xf7db6729, 0x544d4f65, 0xad6768ea, 0x0ef140a6, 0x313a3e33,
    0x92ac167f, 0x4eacc319, 0xed3aeb55, 0xd2f195c0, 0x7167bd8c,
    0xb181394d, 0x12171101, 0x2ddc6f94, 0x8e4a47d8, 0x524a92be,
    0xf1dcbaf2, 0xce17c467, 0x6d81ec2b, 0x15141c31, 0xb682347d,
    0x89494ae8, 0x2adf62a4, 0xf6dfb7c2, 0x55499f8e, 0x6a82e11b,
    0xc914c957, 0x09f24d96, 0xaa6465da, 0x95af1b4f, 0x36393303,
    0xea39e665, 0x49afce29, 0x7664b0bc, 0xd5f298f0, 0x2cd8bf7f,
    0x8f4e9733, 0xb085e9a6, 0x1313c1ea, 0xcf13148c, 0x6c853cc0,
    0x534e4255, 0xf0d86a19, 0x303eeed8, 0x93a8c694, 0xac63b801,
    0x0ff5904d, 0xd3f5452b, 0x70636d67, 0x4fa813f2, 0xec3e3bbe,
    0x668d5aad, 0xc51b72e1, 0xfad00c74, 0x59462438, 0x8546f15e,
    0x26d0d912, 0x191ba787, 0xba8d8fcb, 0x7a6b0b0a, 0xd9fd2346,
    0xe6365dd3, 0x45a0759f, 0x99a0a0f9, 0x3a3688b5, 0x05fdf620,
    0xa66bde6c, 0x5f41f9e3, 0xfcd7d1af, 0xc31caf3a, 0x608a8776,
    0xbc8a5210, 0x1f1c7a5c, 0x20d704c9, 0x83412c85, 0x43a7a844,
    0xe0318008, 0xdffafe9d, 0x7c6cd6d1, 0xa06c03b7, 0x03fa2bfb,
    0x3c31556e, 0x9fa77d22, 0xf2269109, 0x51b0b945, 0x6e7bc7d0,
    0xcdedef9c, 0x11ed3afa, 0xb27b12b6, 0x8db06c23, 0x2e26446f,
    0xeec0c0ae, 0x4d56e8e2, 0x729d9677, 0xd10bbe3b, 0x0d0b6b5d,
    0xae9d4311, 0x91563d84, 0x32c015c8, 0xcbea3247, 0x687c1a0b,
    0x57b7649e, 0xf4214cd2, 0x282199b4, 0x8bb7b1f8, 0xb47ccf6d,
    0x17eae721, 0xd70c63e0, 0x749a4bac, 0x4b513539, 0xe8c71d75,
    0x34c7c813, 0x9751e05f, 0xa89a9eca, 0x0b0cb686, 0x81bfd795,
    0x2229ffd9, 0x1de2814c, 0xbe74a900, 0x62747c66, 0xc1e2542a,
    0xfe292abf, 0x5dbf02f3, 0x9d598632, 0x3ecfae7e, 0x0104d0eb,
    0xa292f8a7, 0x7e922dc1, 0xdd04058d, 0xe2cf7b18, 0x41595354,
    0xb87374db, 0x1be55c97, 0x242e2202, 0x87b80a4e, 0x5bb8df28,
    0xf82ef764, 0xc7e589f1, 0x6473a1bd, 0xa495257c, 0x07030d30,
    0x38c873a5, 0x9b5e5be9, 0x475e8e8f, 0xe4c8a6c3, 0xdb03d856,
    0x7895f01a},
   {0x00000000, 0x2a283862, 0x545070c4, 0x7e7848a6, 0xa8a0e188,
    0x8288d9ea, 0xfcf0914c, 0xd6d8a92e, 0x8a30c551, 0xa018fd33,
    0xde60b595, 0xf4488df7, 0x229024d9, 0x08b81cbb, 0x76c0541d,
    0x5ce86c7f, 0xcf108ce3, 0xe538b481, 0x9b40fc27, 0xb168c445,
    0x67b06d6b, 0x4d985509, 0x33e01daf, 0x19c825cd, 0x452049b2,
    0x6f0871d0, 0x11703976, 0x3b580114, 0xed80a83a, 0xc7a89058,
    0xb9d0d8fe, 0x93f8e09c, 0x45501f87, 0x6f7827e5, 0x11006f43,
    0x3b285721, 0xedf0fe0f, 0xc7d8c66d, 0xb9a08ecb, 0x9388b6a9,
    0xcf60dad6, 0xe548e2b4, 0x9b30aa12, 0xb1189270, 0x67c03b5e,
    0x4de8033c, 0x33904b9a, 0x19b873f8, 0x8a409364, 0xa068ab06,
    0xde10e3a0, 0xf438dbc2, 0x22e072ec, 0x08c84a8e, 0x76b00228,
    0x5c983a4a, 0x00705635, 0x2a586e57, 0x542026f1, 0x7e081e93,
    0xa8d0b7bd, 0x82f88fdf, 0xfc80c779, 0xd6a8ff1b, 0x8aa03f0e,
    0xa088076c, 0xdef04fca, 0xf4d877a8, 0x2200de86, 0x0828e6e4,
    0x7650ae42, 0x5c789620, 0x0090fa5f, 0x2ab8c23d, 0x54c08a9b,
    0x7ee8b2f9, 0xa8301bd7, 0x821823b5, 0xfc606b13, 0xd6485371,
    0x45b0b3ed, 0x6f988b8f, 0x11e0c329, 0x3bc8fb4b, 0xed105265,
    0xc7386a07, 0xb94022a1, 0x93681ac3, 0xcf8076bc, 0xe5a84ede,
    0x9bd00678, 0xb1f83e1a, 0x67209734, 0x4d08af56, 0x3370e7f0,
    0x1958df92, 0xcff02089, 0xe5d818eb, 0x9ba0504d, 0xb188682f,
    0x6750c101, 0x4d78f963, 0x3300b1c5, 0x192889a7, 0x45c0e5d8,
    0x6fe8ddba, 0x1190951c, 0x3bb8ad7e, 0xed600450, 0xc7483c32,
    0xb9307494, 0x93184cf6, 0x00e0ac6a, 0x2ac89408, 0x54b0dcae,
    0x7e98e4cc, 0xa8404de2, 0x82687580, 0xfc103d26, 0xd6380544,
    0x8ad0693b, 0xa0f85159, 0xde8019ff, 0xf4a8219d, 0x227088b3,
    0x0858b0d1, 0x7620f877, 0x5c08c015, 0xce31785d, 0xe419403f,
    0x9a610899, 0xb04930fb, 0x669199d5, 0x4cb9a1b7, 0x32c1e911,
    0x18e9d173, 0x4401bd0c, 0x6e29856e, 0x1051cdc8, 0x3a79f5aa,
    0xeca15c84, 0xc68964e6, 0xb8f12c40, 0x92d91422, 0x0121f4be,
    0x2b09ccdc, 0x5571847a, 0x7f59bc18, 0xa9811536, 0x83a92d54,
    0xfdd165f2, 0xd7f95d90, 0x8b1131ef, 0xa139098d, 0xdf41412b,
    0xf5697949, 0x23b1d067, 0x0999e805, 0x77e1a0a3, 0x5dc998c1,
    0x8b6167da, 0xa1495fb8, 0xdf31171e, 0xf5192f7c, 0x23c18652,
    0x09e9be30, 0x7791f696, 0x5db9cef4, 0x0151a28b, 0x2b799ae9,
    0x5501d24f, 0x7f29ea2d, 0xa9f14303, 0x83d97b61, 0xfda133c7,
    0xd7890ba5, 0x4471eb39, 0x6e59d35b, 0x10219bfd, 0x3a09a39f,
    0xecd10ab1, 0xc6f932d3, 0xb8817a75, 0x92a94217, 0xce412e68,
    0xe469160a, 0x9a115eac, 0xb03966ce, 0x66e1cfe0, 0x4cc9f782,
    0x32b1bf24, 0x18998746, 0x44914753, 0x6eb97f31, 0x10c13797,
    0x3ae90ff5, 0xec31a6db, 0xc6199eb9, 0xb861d61f, 0x9249ee7d,
    0xcea18202, 0xe489ba60, 0x9af1f2c6, 0xb0d9caa4, 0x6601638a,
    0x4c295be8, 0x3251134e, 0x18792b2c, 0x8b81cbb0, 0xa1a9f3d2,
    0xdfd1bb74, 0xf5f98316, 0x23212a38, 0x0909125a, 0x77715afc,
    0x5d59629e, 0x01b10ee1, 0x2b993683, 0x55e17e25, 0x7fc94647,
    0xa911ef69, 0x8339d70b, 0xfd419fad, 0xd769a7cf, 0x01c158d4,
    0x2be960b6, 0x55912810, 0x7fb91072, 0xa961b95c, 0x8349813e,
    0xfd31c998, 0xd719f1fa, 0x8bf19d85, 0xa1d9a5e7, 0xdfa1ed41,
    0xf589d523, 0x23517c0d, 0x0979446f, 0x77010cc9, 0x5d2934ab,
    0xced1d437, 0xe4f9ec55, 0x9a81a4f3, 0xb0a99c91, 0x667135bf,
    0x4c590ddd, 0x3221457b, 0x18097d19, 0x44e11166, 0x6ec92904,
    0x10b161a2, 0x3a9959c0, 0xec41f0ee, 0xc669c88c, 0xb811802a,
    0x9239b848},
   {0x00000000, 0x4713f6fb, 0x8e27edf6, 0xc9341b0d, 0xc73eddad,
    0x802d2b56, 0x4919305b, 0x0e0ac6a0, 0x550cbd1b, 0x121f4be0,
    0xdb2b50ed, 0x9c38a616, 0x923260b6, 0xd521964d, 0x1c158d40,
    0x5b067bbb, 0xaa197a36, 0xed0a8ccd, 0x243e97c0, 0x632d613b,
    0x6d27a79b, 0x2a345160, 0xe3004a6d, 0xa413bc96, 0xff15c72d,
    0xb80631d6, 0x71322adb, 0x3621dc20, 0x382b1a80, 0x7f38ec7b,
    0xb60cf776, 0xf11f018d, 0x8f43f22d, 0xc85004d6, 0x01641fdb,
    0x4677e920, 0x487d2f80, 0x0f6ed97b, 0xc65ac276, 0x8149348d,
    0xda4f4f36, 0x9d5cb9cd, 0x5468a2c0, 0x137b543b, 0x1d71929b,
    0x5a626460, 0x93567f6d, 0xd4458996, 0x255a881b, 0x62497ee0,
    0xab7d65ed, 0xec6e9316, 0xe26455b6, 0xa577a34d, 0x6c43b840,
    0x2b504ebb, 0x70563500, 0x3745c3fb, 0xfe71d8f6, 0xb9622e0d,
    0xb768e8ad, 0xf07b1e56, 0x394f055b, 0x7e5cf3a0, 0xc5f6e21b,
    0x82e514e0, 0x4bd10fed, 0x0cc2f916, 0x02c83fb6, 0x45dbc94d,
    0x8cefd240, 0xcbfc24bb, 0x90fa5f00, 0xd7e9a9fb, 0x1eddb2f6,
    0x59ce440d, 0x57c482ad, 0x10d77456, 0xd9e36f5b, 0x9ef099a0,
    0x6fef982d, 0x28fc6ed6, 0xe1c875db, 0xa6db8320, 0xa8d14580,
    0xefc2b37b, 0x26f6a876, 0x61e55e8d, 0x3ae32536, 0x7df0d3cd,
    0xb4c4c8c0, 0xf3d73e3b, 0xfdddf89b, 0xbace0e60, 0x73fa156d,
    0x34e9e396, 0x4ab51036, 0x0da6e6cd, 0xc492fdc0, 0x83810b3b,
    0x8d8bcd9b, 0xca983b60, 0x03ac206d, 0x44bfd696, 0x1fb9ad2d,
    0x58aa5bd6, 0x919e40db, 0xd68db620, 0xd8877080, 0x9f94867b,
    0x56a09d76, 0x11b36b8d, 0xe0ac6a00, 0xa7bf9cfb, 0x6e8b87f6,
    0x2998710d, 0x2792b7ad, 0x60814156, 0xa9b55a5b, 0xeea6aca0,
    0xb5a0d71b, 0xf2b321e0, 0x3b873aed, 0x7c94cc16, 0x729e0ab6,
    0x358dfc4d, 0xfcb9e740, 0xbbaa11bb, 0x509cc277, 0x178f348c,
    0xdebb2f81, 0x99a8d97a, 0x97a21fda, 0xd0b1e921, 0x1985f22c,
    0x5e9604d7, 0x05907f6c, 0x42838997, 0x8bb7929a, 0xcca46461,
    0xc2aea2c1, 0x85bd543a, 0x4c894f37, 0x0b9ab9cc, 0xfa85b841,
    0xbd964eba, 0x74a255b7, 0x33b1a34c, 0x3dbb65ec, 0x7aa89317,
    0xb39c881a, 0xf48f7ee1, 0xaf89055a, 0xe89af3a1, 0x21aee8ac,
    0x66bd1e57, 0x68b7d8f7, 0x2fa42e0c, 0xe6903501, 0xa183c3fa,
    0xdfdf305a, 0x98ccc6a1, 0x51f8ddac, 0x16eb2b57, 0x18e1edf7,
    0x5ff21b0c, 0x96c60001, 0xd1d5f6fa, 0x8ad38d41, 0xcdc07bba,
    0x04f460b7, 0x43e7964c, 0x4ded50ec, 0x0afea617, 0xc3cabd1a,
    0x84d94be1, 0x75c64a6c, 0x32d5bc97, 0xfbe1a79a, 0xbcf25161,
    0xb2f897c1, 0xf5eb613a, 0x3cdf7a37, 0x7bcc8ccc, 0x20caf777,
    0x67d9018c, 0xaeed1a81, 0xe9feec7a, 0xe7f42ada, 0xa0e7dc21,
    0x69d3c72c, 0x2ec031d7, 0x956a206c, 0xd279d697, 0x1b4dcd9a,
    0x5c5e3b61, 0x5254fdc1, 0x15470b3a, 0xdc731037, 0x9b60e6cc,
    0xc0669d77, 0x87756b8c, 0x4e417081, 0x0952867a, 0x075840da,
    0x404bb621, 0x897fad2c, 0xce6c5bd7, 0x3f735a5a, 0x7860aca1,
    0xb154b7ac, 0xf6474157, 0xf84d87f7, 0xbf5e710c, 0x766a6a01,
    0x31799cfa, 0x6a7fe741, 0x2d6c11ba, 0xe4580ab7, 0xa34bfc4c,
    0xad413aec, 0xea52cc17, 0x2366d71a, 0x647521e1, 0x1a29d241,
    0x5d3a24ba, 0x940e3fb7, 0xd31dc94c, 0xdd170fec, 0x9a04f917,
    0x5330e21a, 0x142314e1, 0x4f256f5a, 0x083699a1, 0xc10282ac,
    0x86117457, 0x881bb2f7, 0xcf08440c, 0x063c5f01, 0x412fa9fa,
    0xb030a877, 0xf7235e8c, 0x3e174581, 0x7904b37a, 0x770e75da,
    0x301d8321, 0xf929982c, 0xbe3a6ed7, 0xe53c156c, 0xa22fe397,
    0x6b1bf89a, 0x2c080e61, 0x2202c8c1, 0x65113e3a, 0xac252537,
    0xeb36d3cc},
   {0x00000000, 0xa13984ee, 0x99020f9d, 0x383b8b73, 0xe975197b,
    0x484c9d95, 0x707716e6, 0xd14e9208, 0x099b34b7, 0xa8a2b059,
    0x90993b2a, 0x31a0bfc4, 0xe0ee2dcc, 0x41d7a922, 0x79ec2251,
    0xd8d5a6bf, 0x1336696e, 0xb20fed80, 0x8a3466f3, 0x2b0de21d,
    0xfa437015, 0x5b7af4fb, 0x63417f88, 0xc278fb66, 0x1aad5dd9,
    0xbb94d937, 0x83af5244, 0x2296d6aa, 0xf3d844a2, 0x52e1c04c,
    0x6ada4b3f, 0xcbe3cfd1, 0x266cd2dc, 0x87555632, 0xbf6edd41,
    0x1e5759af, 0xcf19cba7, 0x6e204f49, 0x561bc43a, 0xf72240d4,
    0x2ff7e66b, 0x8ece6285, 0xb6f5e9f6, 0x17cc6d18, 0xc682ff10,
    0x67bb7bfe, 0x5f80f08d, 0xfeb97463, 0x355abbb2, 0x94633f5c,
    0xac58b42f, 0x0d6130c1, 0xdc2fa2c9, 0x7d162627, 0x452dad54,
    0xe41429ba, 0x3cc18f05, 0x9df80beb, 0xa5c38098, 0x04fa0476,
    0xd5b4967e, 0x748d1290, 0x4cb699e3, 0xed8f1d0d, 0x4cd9a5b8,
    0xede02156, 0xd5dbaa25, 0x74e22ecb, 0xa5acbcc3, 0x0495382d,
    0x3caeb35e, 0x9d9737b0, 0x4542910f, 0xe47b15e1, 0xdc409e92,
    0x7d791a7c, 0xac378874, 0x0d0e0c9a, 0x353587e9, 0x940c0307,
    0x5fefccd6, 0xfed64838, 0xc6edc34b, 0x67d447a5, 0xb69ad5ad,
    0x17a35143, 0x2f98da30, 0x8ea15ede, 0x5674f861, 0xf74d7c8f,
    0xcf76f7fc, 0x6e4f7312, 0xbf01e11a, 0x1e3865f4, 0x2603ee87,
    0x873a6a69, 0x6ab57764, 0xcb8cf38a, 0xf3b778f9, 0x528efc17,
    0x83c06e1f, 0x22f9eaf1, 0x1ac26182, 0xbbfbe56c, 0x632e43d3,
    0xc217c73d, 0xfa2c4c4e, 0x5b15c8a0, 0x8a5b5aa8, 0x2b62de46,
    0x13595535, 0xb260d1db, 0x79831e0a, 0xd8ba9ae4, 0xe0811197,
    0x41b89579, 0x90f60771, 0x31cf839f, 0x09f408ec, 0xa8cd8c02,
    0x70182abd, 0xd121ae53, 0xe91a2520, 0x4823a1ce, 0x996d33c6,
    0x3854b728, 0x006f3c5b, 0xa156b8b5, 0x99b34b70, 0x388acf9e,
    0x00b144ed, 0xa188c003, 0x70c6520b, 0xd1ffd6e5, 0xe9c45d96,
    0x48fdd978, 0x90287fc7, 0x3111fb29, 0x092a705a, 0xa813f4b4,
    0x795d66bc, 0xd864e252, 0xe05f6921, 0x4166edcf, 0x8a85221e,
    0x2bbca6f0, 0x13872d83, 0xb2bea96d, 0x63f03b65, 0xc2c9bf8b,
    0xfaf234f8, 0x5bcbb016, 0x831e16a9, 0x22279247, 0x1a1c1934,
    0xbb259dda, 0x6a6b0fd2, 0xcb528b3c, 0xf369004f, 0x525084a1,
    0xbfdf99ac, 0x1ee61d42, 0x26dd9631, 0x87e412df, 0x56aa80d7,
    0xf7930439, 0xcfa88f4a, 0x6e910ba4, 0xb644ad1b, 0x177d29f5,
    0x2f46a286, 0x8e7f2668, 0x5f31b460, 0xfe08308e, 0xc633bbfd,
    0x670a3f13, 0xace9f0c2, 0x0dd0742c, 0x35ebff5f, 0x94d27bb1,
    0x459ce9b9, 0xe4a56d57, 0xdc9ee624, 0x7da762ca, 0xa572c475,
    0x044b409b, 0x3c70cbe8, 0x9d494f06, 0x4c07dd0e, 0xed3e59e0,
    0xd505d293, 0x743c567d, 0xd56aeec8, 0x74536a26, 0x4c68e155,
    0xed5165bb, 0x3c1ff7b3, 0x9d26735d, 0xa51df82e, 0x04247cc0,
    0xdcf1da7f, 0x7dc85e91, 0x45f3d5e2, 0xe4ca510c, 0x3584c304,
    0x94bd47ea, 0xac86cc99, 0x0dbf4877, 0xc65c87a6, 0x67650348,
    0x5f5e883b, 0xfe670cd5, 0x2f299edd, 0x8e101a33, 0xb62b9140,
    0x171215ae, 0xcfc7b311, 0x6efe37ff, 0x56c5bc8c, 0xf7fc3862,
    0x26b2aa6a, 0x878b2e84, 0xbfb0a5f7, 0x1e892119, 0xf3063c14,
    0x523fb8fa, 0x6a043389, 0xcb3db767, 0x1a73256f, 0xbb4aa181,
    0x83712af2, 0x2248ae1c, 0xfa9d08a3, 0x5ba48c4d, 0x639f073e,
    0xc2a683d0, 0x13e811d8, 0xb2d19536, 0x8aea1e45, 0x2bd39aab,
    0xe030557a, 0x4109d194, 0x79325ae7, 0xd80bde09, 0x09454c01,
    0xa87cc8ef, 0x9047439c, 0x317ec772, 0xe9ab61cd, 0x4892e523,
    0x70a96e50, 0xd190eabe, 0x00de78b6, 0xa1e7fc58, 0x99dc772b,
    0x38e5f3c5},
   {0x00000000, 0xe81790a1, 0x0b5e2703, 0xe349b7a2, 0x16bc4e06,
    0xfeabdea7, 0x1de26905, 0xf5f5f9a4, 0x2d789c0c, 0xc56f0cad,
    0x2626bb0f, 0xce312bae, 0x3bc4d20a, 0xd3d342ab, 0x309af509,
    0xd88d65a8, 0x5af13818, 0xb2e6a8b9, 0x51af1f1b, 0xb9b88fba,
    0x4c4d761e, 0xa45ae6bf, 0x4713511d, 0xaf04c1bc, 0x7789a414,
    0x9f9e34b5, 0x7cd78317, 0x94c013b6, 0x6135ea12, 0x89227ab3,
    0x6a6bcd11, 0x827c5db0, 0xb5e27030, 0x5df5e091, 0xbebc5733,
    0x56abc792, 0xa35e3e36, 0x4b49ae97, 0xa8001935, 0x40178994,
    0x989aec3c, 0x708d7c9d, 0x93c4cb3f, 0x7bd35b9e, 0x8e26a23a,
    0x6631329b, 0x85788539, 0x6d6f1598, 0xef134828, 0x0704d889,
    0xe44d6f2b, 0x0c5aff8a, 0xf9af062e, 0x11b8968f, 0xf2f1212d,
    0x1ae6b18c, 0xc26bd424, 0x2a7c4485, 0xc935f327, 0x21226386,
    0xd4d79a22, 0x3cc00a83, 0xdf89bd21, 0x379e2d80, 0xb0b5e621,
    0x58a27680, 0xbbebc122, 0x53fc5183, 0xa609a827, 0x4e1e3886,
    0xad578f24, 0x45401f85, 0x9dcd7a2d, 0x75daea8c, 0x96935d2e,
    0x7e84cd8f, 0x8b71342b, 0x6366a48a, 0x802f1328, 0x68388389,
    0xea44de39, 0x02534e98, 0xe11af93a, 0x090d699b, 0xfcf8903f,
    0x14ef009e, 0xf7a6b73c, 0x1fb1279d, 0xc73c4235, 0x2f2bd294,
    0xcc626536, 0x2475f597, 0xd1800c33, 0x39979c92, 0xdade2b30,
    0x32c9bb91, 0x05579611, 0xed4006b0, 0x0e09b112, 0xe61e21b3,
    0x13ebd817, 0xfbfc48b6, 0x18b5ff14, 0xf0a26fb5, 0x282f0a1d,
    0xc0389abc, 0x23712d1e, 0xcb66bdbf, 0x3e93441b, 0xd684d4ba,
    0x35cd6318, 0xdddaf3b9, 0x5fa6ae09, 0xb7b13ea8, 0x54f8890a,
    0xbcef19ab, 0x491ae00f, 0xa10d70ae, 0x4244c70c, 0xaa5357ad,
    0x72de3205, 0x9ac9a2a4, 0x79801506, 0x919785a7, 0x64627c03,
    0x8c75eca2, 0x6f3c5b00, 0x872bcba1, 0xba1aca03, 0x520d5aa2,
    0xb144ed00, 0x59537da1, 0xaca68405, 0x44b114a4, 0xa7f8a306,
    0x4fef33a7, 0x9762560f, 0x7f75c6ae, 0x9c3c710c, 0x742be1ad,
    0x81de1809, 0x69c988a8, 0x8a803f0a, 0x6297afab, 0xe0ebf21b,
    0x08fc62ba, 0xebb5d518, 0x03a245b9, 0xf657bc1d, 0x1e402cbc,
    0xfd099b1e, 0x151e0bbf, 0xcd936e17, 0x2584feb6, 0xc6cd4914,
    0x2edad9b5, 0xdb2f2011, 0x3338b0b0, 0xd0710712, 0x386697b3,
    0x0ff8ba33, 0xe7ef2a92, 0x04a69d30, 0xecb10d91, 0x1944f435,
    0xf1536494, 0x121ad336, 0xfa0d4397, 0x2280263f, 0xca97b69e,
    0x29de013c, 0xc1c9919d, 0x343c6839, 0xdc2bf898, 0x3f624f3a,
    0xd775df9b, 0x5509822b, 0xbd1e128a, 0x5e57a528, 0xb6403589,
    0x43b5cc2d, 0xaba25c8c, 0x48ebeb2e, 0xa0fc7b8f, 0x78711e27,
    0x90668e86, 0x732f3924, 0x9b38a985, 0x6ecd5021, 0x86dac080,
    0x65937722, 0x8d84e783, 0x0aaf2c22, 0xe2b8bc83, 0x01f10b21,
    0xe9e69b80, 0x1c136224, 0xf404f285, 0x174d4527, 0xff5ad586,
    0x27d7b02e, 0xcfc0208f, 0x2c89972d, 0xc49e078c, 0x316bfe28,
    0xd97c6e89, 0x3a35d92b, 0xd222498a, 0x505e143a, 0xb849849b,
    0x5b003339, 0xb317a398, 0x46e25a3c, 0xaef5ca9d, 0x4dbc7d3f,
    0xa5abed9e, 0x7d268836, 0x95311897, 0x7678af35, 0x9e6f3f94,
    0x6b9ac630, 0x838d5691, 0x60c4e133, 0x88d37192, 0xbf4d5c12,
    0x575accb3, 0xb4137b11, 0x5c04ebb0, 0xa9f11214, 0x41e682b5,
    0xa2af3517, 0x4ab8a5b6, 0x9235c01e, 0x7a2250bf, 0x996be71d,
    0x717c77bc, 0x84898e18, 0x6c9e1eb9, 0x8fd7a91b, 0x67c039ba,
    0xe5bc640a, 0x0dabf4ab, 0xeee24309, 0x06f5d3a8, 0xf3002a0c,
    0x1b17baad, 0xf85e0d0f, 0x10499dae, 0xc8c4f806, 0x20d368a7,
    0xc39adf05, 0x2b8d4fa4, 0xde78b600, 0x366f26a1, 0xd5269103,
    0x3d3101a2}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x0000000000000000, 0xa19017e800000000, 0x03275e0b00000000,
    0xa2b749e300000000, 0x064ebc1600000000, 0xa7deabfe00000000,
    0x0569e21d00000000, 0xa4f9f5f500000000, 0x0c9c782d00000000,
    0xad0c6fc500000000, 0x0fbb262600000000, 0xae2b31ce00000000,
    0x0ad2c43b00000000, 0xab42d3d300000000, 0x09f59a3000000000,
    0xa8658dd800000000, 0x1838f15a00000000, 0xb9a8e6b200000000,
    0x1b1faf5100000000, 0xba8fb8b900000000, 0x1e764d4c00000000,
    0xbfe65aa400000000, 0x1d51134700000000, 0xbcc104af00000000,
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    0x890f84fd00000000, 0xec04fd9400000000, 0x9632e35100000000,
    0xf3399a3800000000, 0x5c24118300000000, 0x392f68ea00000000,
    0xfce779f300000000, 0x99ec009a00000000, 0x36f18b2100000000,
    0x53faf24800000000, 0x29ccec8d00000000, 0x4cc795e400000000,
    0xe3da1e5f00000000, 0x86d1673600000000, 0x56b0530e00000000,
    0x33bb2a6700000000, 0x9ca6a1dc00000000, 0xf9add8b500000000,
    0x839bc67000000000, 0xe690bf1900000000, 0x498d34a200000000,
    0x2c864dcb00000000, 0xc31c179000000000, 0xa6176ef900000000,
    0x090ae54200000000, 0x6c019c2b00000000, 0x163782ee00000000,
    0x733cfb8700000000, 0xdc21703c00000000, 0xb92a095500000000,
    0x694b3d6d00000000, 0x0c40440400000000, 0xa35dcfbf00000000,
    0xc656b6d600000000, 0xbc60a81300000000, 0xd96bd17a00000000,
    0x76765ac100000000, 0x137d23a800000000, 0xd6b532b100000000,
    0xb3be4bd800000000, 0x1ca3c06300000000, 0x79a8b90a00000000,
    0x039ea7cf00000000, 0x6695dea600000000, 0xc988551d00000000,
    0xac832c7400000000, 0x7ce2184c00000000, 0x19e9612500000000,
    0xb6f4ea9e00000000, 0xd3ff93f700000000, 0xa9c98d3200000000,
    0xccc2f45b00000000, 0x63df7fe000000000, 0x06d4068900000000,
    0xbdeaca5600000000, 0xd8e1b33f00000000, 0x77fc388400000000,
    0x12f741ed00000000, 0x68c15f2800000000, 0x0dca264100000000,
    0xa2d7adfa00000000, 0xc7dcd49300000000, 0x17bde0ab00000000,
    0x72b699c200000000, 0xddab127900000000, 0xb8a06b1000000000,
    0xc29675d500000000, 0xa79d0cbc00000000, 0x0880870700000000,
    0x6d8bfe6e00000000, 0xa843ef7700000000, 0xcd48961e00000000,
    0x62551da500000000, 0x075e64cc00000000, 0x7d687a0900000000,
    0x1863036000000000, 0xb77e88db00000000, 0xd275f1b200000000,
    0x0214c58a00000000, 0x671fbce300000000, 0xc802375800000000,
    0xad094e3100000000, 0xd73f50f400000000, 0xb234299d00000000,
    0x1d29a22600000000, 0x7822db4f00000000, 0x97b8811400000000,
    0xf2b3f87d00000000, 0x5dae73c600000000, 0x38a50aaf00000000,
    0x4293146a00000000, 0x27986d0300000000, 0x8885e6b800000000,
    0xed8e9fd100000000, 0x3defabe900000000, 0x58e4d28000000000,
    0xf7f9593b00000000, 0x92f2205200000000, 0xe8c43e9700000000,
    0x8dcf47fe00000000, 0x22d2cc4500000000, 0x47d9b52c00000000,
    0x8211a43500000000, 0xe71add5c00000000, 0x480756e700000000,
    0x2d0c2f8e00000000, 0x573a314b00000000, 0x3231482200000000,
    0x9d2cc39900000000, 0xf827baf000000000, 0x28468ec800000000,
    0x4d4df7a100000000, 0xe2507c1a00000000, 0x875b057300000000,
    0xfd6d1bb600000000, 0x986662df00000000, 0x377be96400000000,
    0x5270900d00000000},
   {0x0000000000000000, 0xdcecb13d00000000, 0xb8d9637b00000000,
    0x6435d24600000000, 0x70b3c7f600000000, 0xac5f76cb00000000,
    0xc86aa48d00000000, 0x148615b000000000, 0xa160fe3600000000,
    0x7d8c4f0b00000000, 0x19b99d4d00000000, 0xc5552c7000000000,
    0xd1d339c000000000, 0x0d3f88fd00000000, 0x690a5abb00000000,
    0xb5e6eb8600000000, 0x42c1fc6d00000000, 0x9e2d4d5000000000,
    0xfa189f1600000000, 0x26f42e2b00000000, 0x32723b9b00000000,
    0xee9e8aa600000000, 0x8aab58e000000000, 0x5647e9dd00000000,
    0xe3a1025b00000000, 0x3f4db36600000000, 0x5b78612000000000,
    0x8794d01d00000000, 0x9312c5ad00000000, 0x4ffe749000000000,
    0x2bcba6d600000000, 0xf72717eb00000000, 0x8482f9db00000000,
    0x586e48e600000000, 0x3c5b9aa000000000, 0xe0b72b9d00000000,
    0xf4313e2d00000000, 0x28dd8f1000000000, 0x4ce85d5600000000,
    0x9004ec6b00000000, 0x25e207ed00000000, 0xf90eb6d000000000,
    0x9d3b649600000000, 0x41d7d5ab00000000, 0x5551c01b00000000,
    0x89bd712600000000, 0xed88a36000000000, 0x3164125d00000000,
    0xc64305b600000000, 0x1aafb48b00000000, 0x7e9a66cd00000000,
    0xa276d7f000000000, 0xb6f0c24000000000, 0x6a1c737d00000000,
    0x0e29a13b00000000, 0xd2c5100600000000, 0x6723fb8000000000,
    0xbbcf4abd00000000, 0xdffa98fb00000000, 0x031629c600000000,
    0x17903c7600000000, 0xcb7c8d4b00000000, 0xaf495f0d00000000,
    0x73a5ee3000000000, 0x4903826c00000000, 0x95ef335100000000,
    0xf1dae11700000000, 0x2d36502a00000000, 0x39b0459a00000000,
    0xe55cf4a700000000, 0x816926e100000000, 0x5d8597dc00000000,
    0xe8637c5a00000000, 0x348fcd6700000000, 0x50ba1f2100000000,
    0x8c56ae1c00000000, 0x98d0bbac00000000, 0x443c0a9100000000,
    0x2009d8d700000000, 0xfce569ea00000000, 0x0bc27e0100000000,
    0xd72ecf3c00000000, 0xb31b1d7a00000000, 0x6ff7ac4700000000,
    0x7b71b9f700000000, 0xa79d08ca00000000, 0xc3a8da8c00000000,
    0x1f446bb100000000, 0xaaa2803700000000, 0x764e310a00000000,
    0x127be34c00000000, 0xce97527100000000, 0xda1147c100000000,
    0x06fdf6fc00000000, 0x62c824ba00000000, 0xbe24958700000000,
    0xcd817bb700000000, 0x116dca8a00000000, 0x755818cc00000000,
    0xa9b4a9f100000000, 0xbd32bc4100000000, 0x61de0d7c00000000,
    0x05ebdf3a00000000, 0xd9076e0700000000, 0x6ce1858100000000,
    0xb00d34bc00000000, 0xd438e6fa00000000, 0x08d457c700000000,
    0x1c52427700000000, 0xc0bef34a00000000, 0xa48b210c00000000,
    0x7867903100000000, 0x8f4087da00000000, 0x53ac36e700000000,
    0x3799e4a100000000, 0xeb75559c00000000, 0xfff3402c00000000,
    0x231ff11100000000, 0x472a235700000000, 0x9bc6926a00000000,
    0x2e2079ec00000000, 0xf2ccc8d100000000, 0x96f91a9700000000,
    0x4a15abaa00000000, 0x5e93be1a00000000, 0x827f0f2700000000,
    0xe64add6100000000, 0x3aa66c5c00000000, 0x920604d900000000,
    0x4eeab5e400000000, 0x2adf67a200000000, 0xf633d69f00000000,
    0xe2b5c32f00000000, 0x3e59721200000000, 0x5a6ca05400000000,
    0x8680116900000000, 0x3366faef00000000, 0xef8a4bd200000000,
    0x8bbf999400000000, 0x575328a900000000, 0x43d53d1900000000,
    0x9f398c2400000000, 0xfb0c5e6200000000, 0x27e0ef5f00000000,
    0xd0c7f8b400000000, 0x0c2b498900000000, 0x681e9bcf00000000,
    0xb4f22af200000000, 0xa0743f4200000000, 0x7c988e7f00000000,
    0x18ad5c3900000000, 0xc441ed0400000000, 0x71a7068200000000,
    0xad4bb7bf00000000, 0xc97e65f900000000, 0x1592d4c400000000,
    0x0114c17400000000, 0xddf8704900000000, 0xb9cda20f00000000,
    0x6521133200000000, 0x1684fd0200000000, 0xca684c3f00000000,
    0xae5d9e7900000000, 0x72b12f4400000000, 0x66373af400000000,
    0xbadb8bc900000000, 0xdeee598f00000000, 0x0202e8b200000000,
    0xb7e4033400000000, 0x6b08b20900000000, 0x0f3d604f00000000,
    0xd3d1d17200000000, 0xc757c4c200000000, 0x1bbb75ff00000000,
    0x7f8ea7b900000000, 0xa362168400000000, 0x5445016f00000000,
    0x88a9b05200000000, 0xec9c621400000000, 0x3070d32900000000,
    0x24f6c69900000000, 0xf81a77a400000000, 0x9c2fa5e200000000,
    0x40c314df00000000, 0xf525ff5900000000, 0x29c94e6400000000,
    0x4dfc9c2200000000, 0x91102d1f00000000, 0x859638af00000000,
    0x597a899200000000, 0x3d4f5bd400000000, 0xe1a3eae900000000,
    0xdb0586b500000000, 0x07e9378800000000, 0x63dce5ce00000000,
    0xbf3054f300000000, 0xabb6414300000000, 0x775af07e00000000,
    0x136f223800000000, 0xcf83930500000000, 0x7a65788300000000,
    0xa689c9be00000000, 0xc2bc1bf800000000, 0x1e50aac500000000,
    0x0ad6bf7500000000, 0xd63a0e4800000000, 0xb20fdc0e00000000,
    0x6ee36d3300000000, 0x99c47ad800000000, 0x4528cbe500000000,
    0x211d19a300000000, 0xfdf1a89e00000000, 0xe977bd2e00000000,
    0x359b0c1300000000, 0x51aede5500000000, 0x8d426f6800000000,
    0x38a484ee00000000, 0xe44835d300000000, 0x807de79500000000,
    0x5c9156a800000000, 0x4817431800000000, 0x94fbf22500000000,
    0xf0ce206300000000, 0x2c22915e00000000, 0x5f877f6e00000000,
    0x836bce5300000000, 0xe75e1c1500000000, 0x3bb2ad2800000000,
    0x2f34b89800000000, 0xf3d809a500000000, 0x97eddbe300000000,
    0x4b016ade00000000, 0xfee7815800000000, 0x220b306500000000,
    0x463ee22300000000, 0x9ad2531e00000000, 0x8e5446ae00000000,
    0x52b8f79300000000, 0x368d25d500000000, 0xea6194e800000000,
    0x1d46830300000000, 0xc1aa323e00000000, 0xa59fe07800000000,
    0x7973514500000000, 0x6df544f500000000, 0xb119f5c800000000,
    0xd52c278e00000000, 0x09c096b300000000, 0xbc267d3500000000,
    0x60cacc0800000000, 0x04ff1e4e00000000, 0xd813af7300000000,
    0xcc95bac300000000, 0x10790bfe00000000, 0x744cd9b800000000,
    0xa8a0688500000000}};

#else /* W == 4 */

local const z_crc_t FAR crc_braid_table[][256] = {
   {0x00000000, 0x81256527, 0xd93bcc0f, 0x581ea928, 0x69069e5f,
    0xe823fb78, 0xb03d5250, 0x31183777, 0xd20d3cbe, 0x53285999,
    0x0b36f0b1, 0x8a139596, 0xbb0ba2e1, 0x3a2ec7c6, 0x62306eee,
    0xe3150bc9, 0x7f6b7f3d, 0xfe4e1a1a, 0xa650b332, 0x2775d615,
    0x166de162, 0x97488445, 0xcf562d6d, 0x4e73484a, 0xad664383,
    0x2c4326a4, 0x745d8f8c, 0xf578eaab, 0xc460dddc, 0x4545b8fb,
    0x1d5b11d3, 0x9c7e74f4, 0xfed6fe7a, 0x7ff39b5d, 0x27ed3275,
    0xa6c85752, 0x97d06025, 0x16f50502, 0x4eebac2a, 0xcfcec90d,
    0x2cdbc2c4, 0xadfea7e3, 0xf5e00ecb, 0x74c56bec, 0x45dd5c9b,
    0xc4f839bc, 0x9ce69094, 0x1dc3f5b3, 0x81bd8147, 0x0098e460,
    0x58864d48, 0xd9a3286f, 0xe8bb1f18, 0x699e7a3f, 0x3180d317,
    0xb0a5b630, 0x53b0bdf9, 0xd295d8de, 0x8a8b71f6, 0x0bae14d1,
    0x3ab623a6, 0xbb934681, 0xe38defa9, 0x62a88a8e, 0x26dcfab5,
    0xa7f99f92, 0xffe736ba, 0x7ec2539d, 0x4fda64ea, 0xceff01cd,
    0x96e1a8e5, 0x17c4cdc2, 0xf4d1c60b, 0x75f4a32c, 0x2dea0a04,
    0xaccf6f23, 0x9dd75854, 0x1cf23d73, 0x44ec945b, 0xc5c9f17c,
    0x59b78588, 0xd892e0af, 0x808c4987, 0x01a92ca0, 0x30b11bd7,
    0xb1947ef0, 0xe98ad7d8, 0x68afb2ff, 0x8bbab936, 0x0a9fdc11,
    0x52817539, 0xd3a4101e, 0xe2bc2769, 0x6399424e, 0x3b87eb66,
    0xbaa28e41, 0xd80a04cf, 0x592f61e8, 0x0131c8c0, 0x8014ade7,
    0xb10c9a90, 0x3029ffb7, 0x6837569f, 0xe91233b8, 0x0a073871,
    0x8b225d56, 0xd33cf47e, 0x52199159, 0x6301a62e, 0xe224c309,
    0xba3a6a21, 0x3b1f0f06, 0xa7617bf2, 0x26441ed5, 0x7e5ab7fd,
    0xff7fd2da, 0xce67e5ad, 0x4f42808a, 0x175c29a2, 0x96794c85,
    0x756c474c, 0xf449226b, 0xac578b43, 0x2d72ee64, 0x1c6ad913,
    0x9d4fbc34, 0xc551151c, 0x4474703b, 0x4db9f56a, 0xcc9c904d,
    0x94823965, 0x15a75c42, 0x24bf6b35, 0xa59a0e12, 0xfd84a73a,
    0x7ca1c21d, 0x9fb4c9d4, 0x1e91acf3, 0x468f05db, 0xc7aa60fc,
    0xf6b2578b, 0x779732ac, 0x2f899b84, 0xaeacfea3, 0x32d28a57,
    0xb3f7ef70, 0xebe94658, 0x6acc237f, 0x5bd41408, 0xdaf1712f,
    0x82efd807, 0x03cabd20, 0xe0dfb6e9, 0x61fad3ce, 0x39e47ae6,
    0xb8c11fc1, 0x89d928b6, 0x08fc4d91, 0x50e2e4b9, 0xd1c7819e,
    0xb36f0b10, 0x324a6e37, 0x6a54c71f, 0xeb71a238, 0xda69954f,
    0x5b4cf068, 0x03525940, 0x82773c67, 0x616237ae, 0xe0475289,
    0xb859fba1, 0x397c9e86, 0x0864a9f1, 0x8941ccd6, 0xd15f65fe,
    0x507a00d9, 0xcc04742d, 0x4d21110a, 0x153fb822, 0x941add05,
    0xa502ea72, 0x24278f55, 0x7c39267d, 0xfd1c435a, 0x1e094893,
    0x9f2c2db4, 0xc732849c, 0x4617e1bb, 0x770fd6cc, 0xf62ab3eb,
    0xae341ac3, 0x2f117fe4, 0x6b650fdf, 0xea406af8, 0xb25ec3d0,
    0x337ba6f7, 0x02639180, 0x8346f4a7, 0xdb585d8f, 0x5a7d38a8,
    0xb9683361, 0x384d5646, 0x6053ff6e, 0xe1769a49, 0xd06ead3e,
    0x514bc819, 0x09556131, 0x88700416, 0x140e70e2, 0x952b15c5,
    0xcd35bced, 0x4c10d9ca, 0x7d08eebd, 0xfc2d8b9a, 0xa43322b2,
    0x25164795, 0xc6034c5c, 0x4726297b, 0x1f388053, 0x9e1de574,
    0xaf05d203, 0x2e20b724, 0x763e1e0c, 0xf71b7b2b, 0x95b3f1a5,
    0x14969482, 0x4c883daa, 0xcdad588d, 0xfcb56ffa, 0x7d900add,
    0x258ea3f5, 0xa4abc6d2, 0x47becd1b, 0xc69ba83c, 0x9e850114,
    0x1fa06433, 0x2eb85344, 0xaf9d3663, 0xf7839f4b, 0x76a6fa6c,
    0xead88e98, 0x6bfdebbf, 0x33e34297, 0xb2c627b0, 0x83de10c7,
    0x02fb75e0, 0x5ae5dcc8, 0xdbc0b9ef, 0x38d5b226, 0xb9f0d701,
    0xe1ee7e29, 0x60cb1b0e, 0x51d32c79, 0xd0f6495e, 0x88e8e076,
    0x09cd8551},
   {0x00000000, 0x9b73ead4, 0xed96d3e9, 0x76e5393d, 0x005ca193,
    0x9b2f4b47, 0xedca727a, 0x76b998ae, 0x00b94326, 0x9bcaa9f2,
    0xed2f90cf, 0x765c7a1b, 0x00e5e2b5, 0x9b960861, 0xed73315c,
    0x7600db88, 0x0172864c, 0x9a016c98, 0xece455a5, 0x7797bf71,
    0x012e27df, 0x9a5dcd0b, 0xecb8f436, 0x77cb1ee2, 0x01cbc56a,
    0x9ab82fbe, 0xec5d1683, 0x772efc57, 0x019764f9, 0x9ae48e2d,
    0xec01b710, 0x77725dc4, 0x02e50c98, 0x9996e64c, 0xef73df71,
    0x740035a5, 0x02b9ad0b, 0x99ca47df, 0xef2f7ee2, 0x745c9436,
    0x025c4fbe, 0x992fa56a, 0xefca9c57, 0x74b97683, 0x0200ee2d,
    0x997304f9, 0xef963dc4, 0x74e5d710, 0x03978ad4, 0x98e46000,
    0xee01593d, 0x7572b3e9, 0x03cb2b47, 0x98b8c193, 0xee5df8ae,
    0x752e127a, 0x032ec9f2, 0x985d2326, 0xeeb81a1b, 0x75cbf0cf,
    0x03726861, 0x980182b5, 0xeee4bb88, 0x7597515c, 0x05ca1930,
    0x9eb9f3e4, 0xe85ccad9, 0x732f200d, 0x0596b8a3, 0x9ee55277,
    0xe8006b4a, 0x7373819e, 0x05735a16, 0x9e00b0c2, 0xe8e589ff,
    0x7396632b, 0x052ffb85, 0x9e5c1151, 0xe8b9286c, 0x73cac2b8,
    0x04b89f7c, 0x9fcb75a8, 0xe92e4c95, 0x725da641, 0x04e43eef,
    0x9f97d43b, 0xe972ed06, 0x720107d2, 0x0401dc5a, 0x9f72368e,
    0xe9970fb3, 0x72e4e567, 0x045d7dc9, 0x9f2e971d, 0xe9cbae20,
    0x72b844f4, 0x072f15a8, 0x9c5cff7c, 0xeab9c641, 0x71ca2c95,
    0x0773b43b, 0x9c005eef, 0xeae567d2, 0x71968d06, 0x0796568e,
    0x9ce5bc5a, 0xea008567, 0x71736fb3, 0x07caf71d, 0x9cb91dc9,
    0xea5c24f4, 0x712fce20, 0x065d93e4, 0x9d2e7930, 0xebcb400d,
    0x70b8aad9, 0x06013277, 0x9d72d8a3, 0xeb97e19e, 0x70e40b4a,
    0x06e4d0c2, 0x9d973a16, 0xeb72032b, 0x7001e9ff, 0x06b87151,
    0x9dcb9b85, 0xeb2ea2b8, 0x705d486c, 0x0b943260, 0x90e7d8b4,
    0xe602e189, 0x7d710b5d, 0x0bc893f3, 0x90bb7927, 0xe65e401a,
    0x7d2daace, 0x0b2d7146, 0x905e9b92, 0xe6bba2af, 0x7dc8487b,
    0x0b71d0d5, 0x90023a01, 0xe6e7033c, 0x7d94e9e8, 0x0ae6b42c,
    0x91955ef8, 0xe77067c5, 0x7c038d11, 0x0aba15bf, 0x91c9ff6b,
    0xe72cc656, 0x7c5f2c82, 0x0a5ff70a, 0x912c1dde, 0xe7c924e3,
    0x7cbace37, 0x0a035699, 0x9170bc4d, 0xe7958570, 0x7ce66fa4,
    0x09713ef8, 0x9202d42c, 0xe4e7ed11, 0x7f9407c5, 0x092d9f6b,
    0x925e75bf, 0xe4bb4c82, 0x7fc8a656, 0x09c87dde, 0x92bb970a,
    0xe45eae37, 0x7f2d44e3, 0x0994dc4d, 0x92e73699, 0xe4020fa4,
    0x7f71e570, 0x0803b8b4, 0x93705260, 0xe5956b5d, 0x7ee68189,
    0x085f1927, 0x932cf3f3, 0xe5c9cace, 0x7eba201a, 0x08bafb92,
    0x93c91146, 0xe52c287b, 0x7e5fc2af, 0x08e65a01, 0x9395b0d5,
    0xe57089e8, 0x7e03633c, 0x0e5e2b50, 0x952dc184, 0xe3c8f8b9,
    0x78bb126d, 0x0e028ac3, 0x95716017, 0xe394592a, 0x78e7b3fe,
    0x0ee76876, 0x959482a2, 0xe371bb9f, 0x7802514b, 0x0ebbc9e5,
    0x95c82331, 0xe32d1a0c, 0x785ef0d8, 0x0f2cad1c, 0x945f47c8,
    0xe2ba7ef5, 0x79c99421, 0x0f700c8f, 0x9403e65b, 0xe2e6df66,
    0x799535b2, 0x0f95ee3a, 0x94e604ee, 0xe2033dd3, 0x7970d707,
    0x0fc94fa9, 0x94baa57d, 0xe25f9c40, 0x792c7694, 0x0cbb27c8,
    0x97c8cd1c, 0xe12df421, 0x7a5e1ef5, 0x0ce7865b, 0x97946c8f,
    0xe17155b2, 0x7a02bf66, 0x0c0264ee, 0x97718e3a, 0xe194b707,
    0x7ae75dd3, 0x0c5ec57d, 0x972d2fa9, 0xe1c81694, 0x7abbfc40,
    0x0dc9a184, 0x96ba4b50, 0xe05f726d, 0x7b2c98b9, 0x0d950017,
    0x96e6eac3, 0xe003d3fe, 0x7b70392a, 0x0d70e2a2, 0x96030876,
    0xe0e6314b, 0x7b95db9f, 0x0d2c4331, 0x965fa9e5, 0xe0ba90d8,
    0x7bc97a0c},
   {0x00000000, 0x172864c0, 0x2e50c980, 0x3978ad40, 0x5ca19300,
    0x4b89f7c0, 0x72f15a80, 0x65d93e40, 0xb9432600, 0xae6b42c0,
    0x9713ef80, 0x803b8b40, 0xe5e2b500, 0xf2cad1c0, 0xcbb27c80,
    0xdc9a1840, 0xa9f74a41, 0xbedf2e81, 0x87a783c1, 0x908fe701,
    0xf556d941, 0xe27ebd81, 0xdb0610c1, 0xcc2e7401, 0x10b46c41,
    0x079c0881, 0x3ee4a5c1, 0x29ccc101, 0x4c15ff41, 0x5b3d9b81,
    0x624536c1, 0x756d5201, 0x889f92c3, 0x9fb7f603, 0xa6cf5b43,
    0xb1e73f83, 0xd43e01c3, 0xc3166503, 0xfa6ec843, 0xed46ac83,
    0x31dcb4c3, 0x26f4d003, 0x1f8c7d43, 0x08a41983, 0x6d7d27c3,
    0x7a554303, 0x432dee43, 0x54058a83, 0x2168d882, 0x3640bc42,
    0x0f381102, 0x181075c2, 0x7dc94b82, 0x6ae12f42, 0x53998202,
    0x44b1e6c2, 0x982bfe82, 0x8f039a42, 0xb67b3702, 0xa15353c2,
    0xc48a6d82, 0xd3a20942, 0xeadaa402, 0xfdf2c0c2, 0xca4e23c7,
    0xdd664707, 0xe41eea47, 0xf3368e87, 0x96efb0c7, 0x81c7d407,
    0xb8bf7947, 0xaf971d87, 0x730d05c7, 0x64256107, 0x5d5dcc47,
    0x4a75a887, 0x2fac96c7, 0x3884f207, 0x01fc5f47, 0x16d43b87,
    0x63b96986, 0x74910d46, 0x4de9a006, 0x5ac1c4c6, 0x3f18fa86,
    0x28309e46, 0x11483306, 0x066057c6, 0xdafa4f86, 0xcdd22b46,
    0xf4aa8606, 0xe382e2c6, 0x865bdc86, 0x9173b846, 0xa80b1506,
    0xbf2371c6, 0x42d1b104, 0x55f9d5c4, 0x6c817884, 0x7ba91c44,
    0x1e702204, 0x095846c4, 0x3020eb84, 0x27088f44, 0xfb929704,
    0xecbaf3c4, 0xd5c25e84, 0xc2ea3a44, 0xa7330404, 0xb01b60c4,
    0x8963cd84, 0x9e4ba944, 0xeb26fb45, 0xfc0e9f85, 0xc57632c5,
    0xd25e5605, 0xb7876845, 0xa0af0c85, 0x99d7a1c5, 0x8effc505,
    0x5265dd45, 0x454db985, 0x7c3514c5, 0x6b1d7005, 0x0ec44e45,
    0x19ec2a85, 0x209487c5, 0x37bce305, 0x4fed41cf, 0x58c5250f,
    0x61bd884f, 0x7695ec8f, 0x134cd2cf, 0x0464b60f, 0x3d1c1b4f,
    0x2a347f8f, 0xf6ae67cf, 0xe186030f, 0xd8feae4f, 0xcfd6ca8f,
    0xaa0ff4cf, 0xbd27900f, 0x845f3d4f, 0x9377598f, 0xe61a0b8e,
    0xf1326f4e, 0xc84ac20e, 0xdf62a6ce, 0xbabb988e, 0xad93fc4e,
    0x94eb510e, 0x83c335ce, 0x5f592d8e, 0x4871494e, 0x7109e40e,
    0x662180ce, 0x03f8be8e, 0x14d0da4e, 0x2da8770e, 0x3a8013ce,
    0xc772d30c, 0xd05ab7cc, 0xe9221a8c, 0xfe0a7e4c, 0x9bd3400c,
    0x8cfb24cc, 0xb583898c, 0xa2abed4c, 0x7e31f50c, 0x691991cc,
    0x50613c8c, 0x4749584c, 0x2290660c, 0x35b802cc, 0x0cc0af8c,
    0x1be8cb4c, 0x6e85994d, 0x79adfd8d, 0x40d550cd, 0x57fd340d,
    0x32240a4d, 0x250c6e8d, 0x1c74c3cd, 0x0b5ca70d, 0xd7c6bf4d,
    0xc0eedb8d, 0xf99676cd, 0xeebe120d, 0x8b672c4d, 0x9c4f488d,
    0xa537e5cd, 0xb21f810d, 0x85a36208, 0x928b06c8, 0xabf3ab88,
    0xbcdbcf48, 0xd902f108, 0xce2a95c8, 0xf7523888, 0xe07a5c48,
    0x3ce04408, 0x2bc820c8, 0x12b08d88, 0x0598e948, 0x6041d708,
    0x7769b3c8, 0x4e111e88, 0x59397a48, 0x2c542849, 0x3b7c4c89,
    0x0204e1c9, 0x152c8509, 0x70f5bb49, 0x67dddf89, 0x5ea572c9,
    0x498d1609, 0x95170e49, 0x823f6a89, 0xbb47c7c9, 0xac6fa309,
    0xc9b69d49, 0xde9ef989, 0xe7e654c9, 0xf0ce3009, 0x0d3cf0cb,
    0x1a14940b, 0x236c394b, 0x34445d8b, 0x519d63cb, 0x46b5070b,
    0x7fcdaa4b, 0x68e5ce8b, 0xb47fd6cb, 0xa357b20b, 0x9a2f1f4b,
    0x8d077b8b, 0xe8de45cb, 0xfff6210b, 0xc68e8c4b, 0xd1a6e88b,
    0xa4cbba8a, 0xb3e3de4a, 0x8a9b730a, 0x9db317ca, 0xf86a298a,
    0xef424d4a, 0xd63ae00a, 0xc11284ca, 0x1d889c8a, 0x0aa0f84a,
    0x33d8550a, 0x24f031ca, 0x41290f8a, 0x56016b4a, 0x6f79c60a,
    0x7851a2ca},
   {0x00000000, 0x9fda839e, 0xe4c4017d, 0x7b1e82e3, 0x12f904bb,
    0x8d238725, 0xf63d05c6, 0x69e78658, 0x25f20976, 0xba288ae8,
    0xc136080b, 0x5eec8b95, 0x370b0dcd, 0xa8d18e53, 0xd3cf0cb0,
    0x4c158f2e, 0x4be412ec, 0xd43e9172, 0xaf201391, 0x30fa900f,
    0x591d1657, 0xc6c795c9, 0xbdd9172a, 0x220394b4, 0x6e161b9a,
    0xf1cc9804, 0x8ad21ae7, 0x15089979, 0x7cef1f21, 0xe3359cbf,
    0x982b1e5c, 0x07f19dc2, 0x97c825d8, 0x0812a646, 0x730c24a5,
    0xecd6a73b, 0x85312163, 0x1aeba2fd, 0x61f5201e, 0xfe2fa380,
    0xb23a2cae, 0x2de0af30, 0x56fe2dd3, 0xc924ae4d, 0xa0c32815,
    0x3f19ab8b, 0x44072968, 0xdbddaaf6, 0xdc2c3734, 0x43f6b4aa,
    0x38e83649, 0xa732b5d7, 0xced5338f, 0x510fb011, 0x2a1132f2,
    0xb5cbb16c, 0xf9de3e42, 0x6604bddc, 0x1d1a3f3f, 0x82c0bca1,
    0xeb273af9, 0x74fdb967, 0x0fe33b84, 0x9039b81a, 0xf4e14df1,
    0x6b3bce6f, 0x10254c8c, 0x8fffcf12, 0xe618494a, 0x79c2cad4,
    0x02dc4837, 0x9d06cba9, 0xd1134487, 0x4ec9c719, 0x35d745fa,
    0xaa0dc664, 0xc3ea403c, 0x5c30c3a2, 0x272e4141, 0xb8f4c2df,
    0xbf055f1d, 0x20dfdc83, 0x5bc15e60, 0xc41bddfe, 0xadfc5ba6,
    0x3226d838, 0x49385adb, 0xd6e2d945, 0x9af7566b, 0x052dd5f5,
    0x7e335716, 0xe1e9d488, 0x880e52d0, 0x17d4d14e, 0x6cca53ad,
    0xf310d033, 0x63296829, 0xfcf3ebb7, 0x87ed6954, 0x1837eaca,
    0x71d06c92, 0xee0aef0c, 0x95146def, 0x0aceee71, 0x46db615f,
    0xd901e2c1, 0xa21f6022, 0x3dc5e3bc, 0x542265e4, 0xcbf8e67a,
    0xb0e66499, 0x2f3ce707, 0x28cd7ac5, 0xb717f95b, 0xcc097bb8,
    0x53d3f826, 0x3a347e7e, 0xa5eefde0, 0xdef07f03, 0x412afc9d,
    0x0d3f73b3, 0x92e5f02d, 0xe9fb72ce, 0x7621f150, 0x1fc67708,
    0x801cf496, 0xfb027675, 0x64d8f5eb, 0x32b39da3, 0xad691e3d,
    0xd6779cde, 0x49ad1f40, 0x204a9918, 0xbf901a86, 0xc48e9865,
    0x5b541bfb, 0x174194d5, 0x889b174b, 0xf38595a8, 0x6c5f1636,
    0x05b8906e, 0x9a6213f0, 0xe17c9113, 0x7ea6128d, 0x79578f4f,
    0xe68d0cd1, 0x9d938e32, 0x02490dac, 0x6bae8bf4, 0xf474086a,
    0x8f6a8a89, 0x10b00917, 0x5ca58639, 0xc37f05a7, 0xb8618744,
    0x27bb04da, 0x4e5c8282, 0xd186011c, 0xaa9883ff, 0x35420061,
    0xa57bb87b, 0x3aa13be5, 0x41bfb906, 0xde653a98, 0xb782bcc0,
    0x28583f5e, 0x5346bdbd, 0xcc9c3e23, 0x8089b10d, 0x1f533293,
    0x644db070, 0xfb9733ee, 0x9270b5b6, 0x0daa3628, 0x76b4b4cb,
    0xe96e3755, 0xee9faa97, 0x71452909, 0x0a5babea, 0x95812874,
    0xfc66ae2c, 0x63bc2db2, 0x18a2af51, 0x87782ccf, 0xcb6da3e1,
    0x54b7207f, 0x2fa9a29c, 0xb0732102, 0xd994a75a, 0x464e24c4,
    0x3d50a627, 0xa28a25b9, 0xc652d052, 0x598853cc, 0x2296d12f,
    0xbd4c52b1, 0xd4abd4e9, 0x4b715777, 0x306fd594, 0xafb5560a,
    0xe3a0d924, 0x7c7a5aba, 0x0764d859, 0x98be5bc7, 0xf159dd9f,
    0x6e835e01, 0x159ddce2, 0x8a475f7c, 0x8db6c2be, 0x126c4120,
    0x6972c3c3, 0xf6a8405d, 0x9f4fc605, 0x0095459b, 0x7b8bc778,
    0xe45144e6, 0xa844cbc8, 0x379e4856, 0x4c80cab5, 0xd35a492b,
    0xbabdcf73, 0x25674ced, 0x5e79ce0e, 0xc1a34d90, 0x519af58a,
    0xce407614, 0xb55ef4f7, 0x2a847769, 0x4363f131, 0xdcb972af,
    0xa7a7f04c, 0x387d73d2, 0x7468fcfc, 0xebb27f62, 0x90acfd81,
    0x0f767e1f, 0x6691f847, 0xf94b7bd9, 0x8255f93a, 0x1d8f7aa4,
    0x1a7ee766, 0x85a464f8, 0xfebae61b, 0x61606585, 0x0887e3dd,
    0x975d6043, 0xec43e2a0, 0x7399613e, 0x3f8cee10, 0xa0566d8e,
    0xdb48ef6d, 0x44926cf3, 0x2d75eaab, 0xb2af6935, 0xc9b1ebd6,
    0x566b6848}};

local const z_word_t FAR crc_braid_big_table[][256] = {
   {0x00000000, 0x9e83da9f, 0x7d01c4e4, 0xe3821e7b, 0xbb04f912,
    0x2587238d, 0xc6053df6, 0x5886e769, 0x7609f225, 0xe88a28ba,
    0x0b0836c1, 0x958bec5e, 0xcd0d0b37, 0x538ed1a8, 0xb00ccfd3,
    0x2e8f154c, 0xec12e44b, 0x72913ed4, 0x911320af, 0x0f90fa30,
    0x57161d59, 0xc995c7c6, 0x2a17d9bd, 0xb4940322, 0x9a1b166e,
    0x0498ccf1, 0xe71ad28a, 0x79990815, 0x211fef7c, 0xbf9c35e3,
    0x5c1e2b98, 0xc29df107, 0xd825c897, 0x46a61208, 0xa5240c73,
    0x3ba7d6ec, 0x63213185, 0xfda2eb1a, 0x1e20f561, 0x80a32ffe,
    0xae2c3ab2, 0x30afe02d, 0xd32dfe56, 0x4dae24c9, 0x1528c3a0,
    0x8bab193f, 0x68290744, 0xf6aadddb, 0x34372cdc, 0xaab4f643,
    0x4936e838, 0xd7b532a7, 0x8f33d5ce, 0x11b00f51, 0xf232112a,
    0x6cb1cbb5, 0x423edef9, 0xdcbd0466, 0x3f3f1a1d, 0xa1bcc082,
    0xf93a27eb, 0x67b9fd74, 0x843be30f, 0x1ab83990, 0xf14de1f4,
    0x6fce3b6b, 0x8c4c2510, 0x12cfff8f, 0x4a4918e6, 0xd4cac279,
    0x3748dc02, 0xa9cb069d, 0x874413d1, 0x19c7c94e, 0xfa45d735,
    0x64c60daa, 0x3c40eac3, 0xa2c3305c, 0x41412e27, 0xdfc2f4b8,
    0x1d5f05bf, 0x83dcdf20, 0x605ec15b, 0xfedd1bc4, 0xa65bfcad,
    0x38d82632, 0xdb5a3849, 0x45d9e2d6, 0x6b56f79a, 0xf5d52d05,
    0x1657337e, 0x88d4e9e1, 0xd0520e88, 0x4ed1d417, 0xad53ca6c,
    0x33d010f3, 0x29682963, 0xb7ebf3fc, 0x5469ed87, 0xcaea3718,
    0x926cd071, 0x0cef0aee, 0xef6d1495, 0x71eece0a, 0x5f61db46,
    0xc1e201d9, 0x22601fa2, 0xbce3c53d, 0xe4652254, 0x7ae6f8cb,
    0x9964e6b0, 0x07e73c2f, 0xc57acd28, 0x5bf917b7, 0xb87b09cc,
    0x26f8d353, 0x7e7e343a, 0xe0fdeea5, 0x037ff0de, 0x9dfc2a41,
    0xb3733f0d, 0x2df0e592, 0xce72fbe9, 0x50f12176, 0x0877c61f,
    0x96f41c80, 0x757602fb, 0xebf5d864, 0xa39db332, 0x3d1e69ad,
    0xde9c77d6, 0x401fad49, 0x18994a20, 0x861a90bf, 0x65988ec4,
    0xfb1b545b, 0xd5944117, 0x4b179b88, 0xa89585f3, 0x36165f6c,
    0x6e90b805, 0xf013629a, 0x13917ce1, 0x8d12a67e, 0x4f8f5779,
    0xd10c8de6, 0x328e939d, 0xac0d4902, 0xf48bae6b, 0x6a0874f4,
    0x898a6a8f, 0x1709b010, 0x3986a55c, 0xa7057fc3, 0x448761b8,
    0xda04bb27, 0x82825c4e, 0x1c0186d1, 0xff8398aa, 0x61004235,
    0x7bb87ba5, 0xe53ba13a, 0x06b9bf41, 0x983a65de, 0xc0bc82b7,
    0x5e3f5828, 0xbdbd4653, 0x233e9ccc, 0x0db18980, 0x9332531f,
    0x70b04d64, 0xee3397fb, 0xb6b57092, 0x2836aa0d, 0xcbb4b476,
    0x55376ee9, 0x97aa9fee, 0x09294571, 0xeaab5b0a, 0x74288195,
    0x2cae66fc, 0xb22dbc63, 0x51afa218, 0xcf2c7887, 0xe1a36dcb,
    0x7f20b754, 0x9ca2a92f, 0x022173b0, 0x5aa794d9, 0xc4244e46,
    0x27a6503d, 0xb9258aa2, 0x52d052c6, 0xcc538859, 0x2fd19622,
    0xb1524cbd, 0xe9d4abd4, 0x7757714b, 0x94d56f30, 0x0a56b5af,
    0x24d9a0e3, 0xba5a7a7c, 0x59d86407, 0xc75bbe98, 0x9fdd59f1,
    0x015e836e, 0xe2dc9d15, 0x7c5f478a, 0xbec2b68d, 0x20416c12,
    0xc3c37269, 0x5d40a8f6, 0x05c64f9f, 0x9b459500, 0x78c78b7b,
    0xe64451e4, 0xc8cb44a8, 0x56489e37, 0xb5ca804c, 0x2b495ad3,
    0x73cfbdba, 0xed4c6725, 0x0ece795e, 0x904da3c1, 0x8af59a51,
    0x147640ce, 0xf7f45eb5, 0x6977842a, 0x31f16343, 0xaf72b9dc,
    0x4cf0a7a7, 0xd2737d38, 0xfcfc6874, 0x627fb2eb, 0x81fdac90,
    0x1f7e760f, 0x47f89166, 0xd97b4bf9, 0x3af95582, 0xa47a8f1d,
    0x66e77e1a, 0xf864a485, 0x1be6bafe, 0x85656061, 0xdde38708,
    0x43605d97, 0xa0e243ec, 0x3e619973, 0x10ee8c3f, 0x8e6d56a0,
    0x6def48db, 0xf36c9244, 0xabea752d, 0x3569afb2, 0xd6ebb1c9,
    0x48686b56},
   {0x00000000, 0xc0642817, 0x80c9502e, 0x40ad7839, 0x0093a15c,
    0xc0f7894b, 0x805af172, 0x403ed965, 0x002643b9, 0xc0426bae,
    0x80ef1397, 0x408b3b80, 0x00b5e2e5, 0xc0d1caf2, 0x807cb2cb,
    0x40189adc, 0x414af7a9, 0x812edfbe, 0xc183a787, 0x01e78f90,
    0x41d956f5, 0x81bd7ee2, 0xc11006db, 0x01742ecc, 0x416cb410,
    0x81089c07, 0xc1a5e43e, 0x01c1cc29, 0x41ff154c, 0x819b3d5b,
    0xc1364562, 0x01526d75, 0xc3929f88, 0x03f6b79f, 0x435bcfa6,
    0x833fe7b1, 0xc3013ed4, 0x036516c3, 0x43c86efa, 0x83ac46ed,
    0xc3b4dc31, 0x03d0f426, 0x437d8c1f, 0x8319a408, 0xc3277d6d,
    0x0343557a, 0x43ee2d43, 0x838a0554, 0x82d86821, 0x42bc4036,
    0x0211380f, 0xc2751018, 0x824bc97d, 0x422fe16a, 0x02829953,
    0xc2e6b144, 0x82fe2b98, 0x429a038f, 0x02377bb6, 0xc25353a1,
    0x826d8ac4, 0x4209a2d3, 0x02a4daea, 0xc2c0f2fd, 0xc7234eca,
    0x074766dd, 0x47ea1ee4, 0x878e36f3, 0xc7b0ef96, 0x07d4c781,
    0x4779bfb8, 0x871d97af, 0xc7050d73, 0x07612564, 0x47cc5d5d,
    0x87a8754a, 0xc796ac2f, 0x07f28438, 0x475ffc01, 0x873bd416,
    0x8669b963, 0x460d9174, 0x06a0e94d, 0xc6c4c15a, 0x86fa183f,
    0x469e3028, 0x06334811, 0xc6576006, 0x864ffada, 0x462bd2cd,
    0x0686aaf4, 0xc6e282e3, 0x86dc5b86, 0x46b87391, 0x06150ba8,
    0xc67123bf, 0x04b1d142, 0xc4d5f955, 0x8478816c, 0x441ca97b,
    0x0422701e, 0xc4465809, 0x84eb2030, 0x448f0827, 0x049792fb,
    0xc4f3baec, 0x845ec2d5, 0x443aeac2, 0x040433a7, 0xc4601bb0,
    0x84cd6389, 0x44a94b9e, 0x45fb26eb, 0x859f0efc, 0xc53276c5,
    0x05565ed2, 0x456887b7, 0x850cafa0, 0xc5a1d799, 0x05c5ff8e,
    0x45dd6552, 0x85b94d45, 0xc514357c, 0x05701d6b, 0x454ec40e,
    0x852aec19, 0xc5879420, 0x05e3bc37, 0xcf41ed4f, 0x0f25c558,
    0x4f88bd61, 0x8fec9576, 0xcfd24c13, 0x0fb66404, 0x4f1b1c3d,
    0x8f7f342a, 0xcf67aef6, 0x0f0386e1, 0x4faefed8, 0x8fcad6cf,
    0xcff40faa, 0x0f9027bd, 0x4f3d5f84, 0x8f597793, 0x8e0b1ae6,
    0x4e6f32f1, 0x0ec24ac8, 0xcea662df, 0x8e98bbba, 0x4efc93ad,
    0x0e51eb94, 0xce35c383, 0x8e2d595f, 0x4e497148, 0x0ee40971,
    0xce802166, 0x8ebef803, 0x4edad014, 0x0e77a82d, 0xce13803a,
    0x0cd372c7, 0xccb75ad0, 0x8c1a22e9, 0x4c7e0afe, 0x0c40d39b,
    0xcc24fb8c, 0x8c8983b5, 0x4cedaba2, 0x0cf5317e, 0xcc911969,
    0x8c3c6150, 0x4c584947, 0x0c669022, 0xcc02b835, 0x8cafc00c,
    0x4ccbe81b, 0x4d99856e, 0x8dfdad79, 0xcd50d540, 0x0d34fd57,
    0x4d0a2432, 0x8d6e0c25, 0xcdc3741c, 0x0da75c0b, 0x4dbfc6d7,
    0x8ddbeec0, 0xcd7696f9, 0x0d12beee, 0x4d2c678b, 0x8d484f9c,
    0xcde537a5, 0x0d811fb2, 0x0862a385, 0xc8068b92, 0x88abf3ab,
    0x48cfdbbc, 0x08f102d9, 0xc8952ace, 0x883852f7, 0x485c7ae0,
    0x0844e03c, 0xc820c82b, 0x888db012, 0x48e99805, 0x08d74160,
    0xc8b36977, 0x881e114e, 0x487a3959, 0x4928542c, 0x894c7c3b,
    0xc9e10402, 0x09852c15, 0x49bbf570, 0x89dfdd67, 0xc972a55e,
    0x09168d49, 0x490e1795, 0x896a3f82, 0xc9c747bb, 0x09a36fac,
    0x499db6c9, 0x89f99ede, 0xc954e6e7, 0x0930cef0, 0xcbf03c0d,
    0x0b94141a, 0x4b396c23, 0x8b5d4434, 0xcb639d51, 0x0b07b546,
    0x4baacd7f, 0x8bcee568, 0xcbd67fb4, 0x0bb257a3, 0x4b1f2f9a,
    0x8b7b078d, 0xcb45dee8, 0x0b21f6ff, 0x4b8c8ec6, 0x8be8a6d1,
    0x8abacba4, 0x4adee3b3, 0x0a739b8a, 0xca17b39d, 0x8a296af8,
    0x4a4d42ef, 0x0ae03ad6, 0xca8412c1, 0x8a9c881d, 0x4af8a00a,
    0x0a55d833, 0xca31f024, 0x8a0f2941, 0x4a6b0156, 0x0ac6796f,
    0xcaa25178},
   {0x00000000, 0xd4ea739b, 0xe9d396ed, 0x3d39e576, 0x93a15c00,
    0x474b2f9b, 0x7a72caed, 0xae98b976, 0x2643b900, 0xf2a9ca9b,
    0xcf902fed, 0x1b7a5c76, 0xb5e2e500, 0x6108969b, 0x5c3173ed,
    0x88db0076, 0x4c867201, 0x986c019a, 0xa555e4ec, 0x71bf9777,
    0xdf272e01, 0x0bcd5d9a, 0x36f4b8ec, 0xe21ecb77, 0x6ac5cb01,
    0xbe2fb89a, 0x83165dec, 0x57fc2e77, 0xf9649701, 0x2d8ee49a,
    0x10b701ec, 0xc45d7277, 0x980ce502, 0x4ce69699, 0x71df73ef,
    0xa5350074, 0x0badb902, 0xdf47ca99, 0xe27e2fef, 0x36945c74,
    0xbe4f5c02, 0x6aa52f99, 0x579ccaef, 0x8376b974, 0x2dee0002,
    0xf9047399, 0xc43d96ef, 0x10d7e574, 0xd48a9703, 0x0060e498,
    0x3d5901ee, 0xe9b37275, 0x472bcb03, 0x93c1b898, 0xaef85dee,
    0x7a122e75, 0xf2c92e03, 0x26235d98, 0x1b1ab8ee, 0xcff0cb75,
    0x61687203, 0xb5820198, 0x88bbe4ee, 0x5c519775, 0x3019ca05,
    0xe4f3b99e, 0xd9ca5ce8, 0x0d202f73, 0xa3b89605, 0x7752e59e,
    0x4a6b00e8, 0x9e817373, 0x165a7305, 0xc2b0009e, 0xff89e5e8,
    0x2b639673, 0x85fb2f05, 0x51115c9e, 0x6c28b9e8, 0xb8c2ca73,
    0x7c9fb804, 0xa875cb9f, 0x954c2ee9, 0x41a65d72, 0xef3ee404,
    0x3bd4979f, 0x06ed72e9, 0xd2070172, 0x5adc0104, 0x8e36729f,
    0xb30f97e9, 0x67e5e472, 0xc97d5d04, 0x1d972e9f, 0x20aecbe9,
    0xf444b872, 0xa8152f07, 0x7cff5c9c, 0x41c6b9ea, 0x952cca71,
    0x3bb47307, 0xef5e009c, 0xd267e5ea, 0x068d9671, 0x8e569607,
    0x5abce59c, 0x678500ea, 0xb36f7371, 0x1df7ca07, 0xc91db99c,
    0xf4245cea, 0x20ce2f71, 0xe4935d06, 0x30792e9d, 0x0d40cbeb,
    0xd9aab870, 0x77320106, 0xa3d8729d, 0x9ee197eb, 0x4a0be470,
    0xc2d0e406, 0x163a979d, 0x2b0372eb, 0xffe90170, 0x5171b806,
    0x859bcb9d, 0xb8a22eeb, 0x6c485d70, 0x6032940b, 0xb4d8e790,
    0x89e102e6, 0x5d0b717d, 0xf393c80b, 0x2779bb90, 0x1a405ee6,
    0xceaa2d7d, 0x46712d0b, 0x929b5e90, 0xafa2bbe6, 0x7b48c87d,
    0xd5d0710b, 0x013a0290, 0x3c03e7e6, 0xe8e9947d, 0x2cb4e60a,
    0xf85e9591, 0xc56770e7, 0x118d037c, 0xbf15ba0a, 0x6bffc991,
    0x56c62ce7, 0x822c5f7c, 0x0af75f0a, 0xde1d2c91, 0xe324c9e7,
    0x37ceba7c, 0x9956030a, 0x4dbc7091, 0x708595e7, 0xa46fe67c,
    0xf83e7109, 0x2cd40292, 0x11ede7e4, 0xc507947f, 0x6b9f2d09,
    0xbf755e92, 0x824cbbe4, 0x56a6c87f, 0xde7dc809, 0x0a97bb92,
    0x37ae5ee4, 0xe3442d7f, 0x4ddc9409, 0x9936e792, 0xa40f02e4,
    0x70e5717f, 0xb4b80308, 0x60527093, 0x5d6b95e5, 0x8981e67e,
    0x27195f08, 0xf3f32c93, 0xcecac9e5, 0x1a20ba7e, 0x92fbba08,
    0x4611c993, 0x7b282ce5, 0xafc25f7e, 0x015ae608, 0xd5b09593,
    0xe88970e5, 0x3c63037e, 0x502b5e0e, 0x84c12d95, 0xb9f8c8e3,
    0x6d12bb78, 0xc38a020e, 0x17607195, 0x2a5994e3, 0xfeb3e778,
    0x7668e70e, 0xa2829495, 0x9fbb71e3, 0x4b510278, 0xe5c9bb0e,
    0x3123c895, 0x0c1a2de3, 0xd8f05e78, 0x1cad2c0f, 0xc8475f94,
    0xf57ebae2, 0x2194c979, 0x8f0c700f, 0x5be60394, 0x66dfe6e2,
    0xb2359579, 0x3aee950f, 0xee04e694, 0xd33d03e2, 0x07d77079,
    0xa94fc90f, 0x7da5ba94, 0x409c5fe2, 0x94762c79, 0xc827bb0c,
    0x1ccdc897, 0x21f42de1, 0xf51e5e7a, 0x5b86e70c, 0x8f6c9497,
    0xb25571e1, 0x66bf027a, 0xee64020c, 0x3a8e7197, 0x07b794e1,
    0xd35de77a, 0x7dc55e0c, 0xa92f2d97, 0x9416c8e1, 0x40fcbb7a,
    0x84a1c90d, 0x504bba96, 0x6d725fe0, 0xb9982c7b, 0x1700950d,
    0xc3eae696, 0xfed303e0, 0x2a39707b, 0xa2e2700d, 0x76080396,
    0x4b31e6e0, 0x9fdb957b, 0x31432c0d, 0xe5a95f96, 0xd890bae0,
    0x0c7ac97b},
   {0x00000000, 0x27652581, 0x0fcc3bd9, 0x28a91e58, 0x5f9e0669,
    0x78fb23e8, 0x50523db0, 0x77371831, 0xbe3c0dd2, 0x99592853,
    0xb1f0360b, 0x9695138a, 0xe1a20bbb, 0xc6c72e3a, 0xee6e3062,
    0xc90b15e3, 0x3d7f6b7f, 0x1a1a4efe, 0x32b350a6, 0x15d67527,
    0x62e16d16, 0x45844897, 0x6d2d56cf, 0x4a48734e, 0x834366ad,
    0xa426432c, 0x8c8f5d74, 0xabea78f5, 0xdcdd60c4, 0xfbb84545,
    0xd3115b1d, 0xf4747e9c, 0x7afed6fe, 0x5d9bf37f, 0x7532ed27,
    0x5257c8a6, 0x2560d097, 0x0205f516, 0x2aaceb4e, 0x0dc9cecf,
    0xc4c2db2c, 0xe3a7fead, 0xcb0ee0f5, 0xec6bc574, 0x9b5cdd45,
    0xbc39f8c4, 0x9490e69c, 0xb3f5c31d, 0x4781bd81, 0x60e49800,
    0x484d8658, 0x6f28a3d9, 0x181fbbe8, 0x3f7a9e69, 0x17d38031,
    0x30b6a5b0, 0xf9bdb053, 0xded895d2, 0xf6718b8a, 0xd114ae0b,
    0xa623b63a, 0x814693bb, 0xa9ef8de3, 0x8e8aa862, 0xb5fadc26,
    0x929ff9a7, 0xba36e7ff, 0x9d53c27e, 0xea64da4f, 0xcd01ffce,
    0xe5a8e196, 0xc2cdc417, 0x0bc6d1f4, 0x2ca3f475, 0x040aea2d,
    0x236fcfac, 0x5458d79d, 0x733df21c, 0x5b94ec44, 0x7cf1c9c5,
    0x8885b759, 0xafe092d8, 0x87498c80, 0xa02ca901, 0xd71bb130,
    0xf07e94b1, 0xd8d78ae9, 0xffb2af68, 0x36b9ba8b, 0x11dc9f0a,
    0x39758152, 0x1e10a4d3, 0x6927bce2, 0x4e429963, 0x66eb873b,
    0x418ea2ba, 0xcf040ad8, 0xe8612f59, 0xc0c83101, 0xe7ad1480,
    0x909a0cb1, 0xb7ff2930, 0x9f563768, 0xb83312e9, 0x7138070a,
    0x565d228b, 0x7ef43cd3, 0x59911952, 0x2ea60163, 0x09c324e2,
    0x216a3aba, 0x060f1f3b, 0xf27b61a7, 0xd51e4426, 0xfdb75a7e,
    0xdad27fff, 0xade567ce, 0x8a80424f, 0xa2295c17, 0x854c7996,
    0x4c476c75, 0x6b2249f4, 0x438b57ac, 0x64ee722d, 0x13d96a1c,
    0x34bc4f9d, 0x1c1551c5, 0x3b707444, 0x6af5b94d, 0x4d909ccc,
    0x65398294, 0x425ca715, 0x356bbf24, 0x120e9aa5, 0x3aa784fd,
    0x1dc2a17c, 0xd4c9b49f, 0xf3ac911e, 0xdb058f46, 0xfc60aac7,
    0x8b57b2f6, 0xac329777, 0x849b892f, 0xa3feacae, 0x578ad232,
    0x70eff7b3, 0x5846e9eb, 0x7f23cc6a, 0x0814d45b, 0x2f71f1da,
    0x07d8ef82, 0x20bdca03, 0xe9b6dfe0, 0xced3fa61, 0xe67ae439,
    0xc11fc1b8, 0xb628d989, 0x914dfc08, 0xb9e4e250, 0x9e81c7d1,
    0x100b6fb3, 0x376e4a32, 0x1fc7546a, 0x38a271eb, 0x4f9569da,
    0x68f04c5b, 0x40595203, 0x673c7782, 0xae376261, 0x895247e0,
    0xa1fb59b8, 0x869e7c39, 0xf1a96408, 0xd6cc4189, 0xfe655fd1,
    0xd9007a50, 0x2d7404cc, 0x0a11214d, 0x22b83f15, 0x05dd1a94,
    0x72ea02a5, 0x558f2724, 0x7d26397c, 0x5a431cfd, 0x9348091e,
    0xb42d2c9f, 0x9c8432c7, 0xbbe11746, 0xccd60f77, 0xebb32af6,
    0xc31a34ae, 0xe47f112f, 0xdf0f656b, 0xf86a40ea, 0xd0c35eb2,
    0xf7a67b33, 0x80916302, 0xa7f44683, 0x8f5d58db, 0xa8387d5a,
    0x613368b9, 0x46564d38, 0x6eff5360, 0x499a76e1, 0x3ead6ed0,
    0x19c84b51, 0x31615509, 0x16047088, 0xe2700e14, 0xc5152b95,
    0xedbc35cd, 0xcad9104c, 0xbdee087d, 0x9a8b2dfc, 0xb22233a4,
    0x95471625, 0x5c4c03c6, 0x7b292647, 0x5380381f, 0x74e51d9e,
    0x03d205af, 0x24b7202e, 0x0c1e3e76, 0x2b7b1bf7, 0xa5f1b395,
    0x82949614, 0xaa3d884c, 0x8d58adcd, 0xfa6fb5fc, 0xdd0a907d,
    0xf5a38e25, 0xd2c6aba4, 0x1bcdbe47, 0x3ca89bc6, 0x1401859e,
    0x3364a01f, 0x4453b82e, 0x63369daf, 0x4b9f83f7, 0x6cfaa676,
    0x988ed8ea, 0xbfebfd6b, 0x9742e333, 0xb027c6b2, 0xc710de83,
    0xe075fb02, 0xc8dce55a, 0xefb9c0db, 0x26b2d538, 0x01d7f0b9,
    0x297eeee1, 0x0e1bcb60, 0x792cd351, 0x5e49f6d0, 0x76e0e888,
    0x5185cd09}};

#endif

#endif

#endif

local const z_crc_t FAR x2n_table[] = {
    0x40000000, 0x20000000, 0x08000000, 0x00800000, 0x00008000,
    0xedb88320, 0xb1e6b092, 0xa06a2517, 0xed627dae, 0x88d14467,
    0xd7bbfe6a, 0xec447f11, 0x8e7ea170, 0x6427800e, 0x4d47bae0,
    0x09fe548f, 0x83852d0f, 0x30362f1a, 0x7b5a9cc3, 0x31fec169,
    0x9fec022a, 0x6c8dedc4, 0x15d6874d, 0x5fde7a4e, 0xbad90e37,
    0x2e4e5eef, 0x4eaba214, 0xa8a472c0, 0x429a969e, 0x148d302a,
    0xc40ba6d0, 0xc4e22c3c};
Added compat/zlib/deflate.c.



























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* deflate.c -- compress data using the deflation algorithm
 * Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/*
 *  ALGORITHM
 *
 *      The "deflation" process depends on being able to identify portions
 *      of the input text which are identical to earlier input (within a
 *      sliding window trailing behind the input currently being processed).
 *
 *      The most straightforward technique turns out to be the fastest for
 *      most input files: try all possible matches and select the longest.
 *      The key feature of this algorithm is that insertions into the string
 *      dictionary are very simple and thus fast, and deletions are avoided
 *      completely. Insertions are performed at each input character, whereas
 *      string matches are performed only when the previous match ends. So it
 *      is preferable to spend more time in matches to allow very fast string
 *      insertions and avoid deletions. The matching algorithm for small
 *      strings is inspired from that of Rabin & Karp. A brute force approach
 *      is used to find longer strings when a small match has been found.
 *      A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
 *      (by Leonid Broukhis).
 *         A previous version of this file used a more sophisticated algorithm
 *      (by Fiala and Greene) which is guaranteed to run in linear amortized
 *      time, but has a larger average cost, uses more memory and is patented.
 *      However the F&G algorithm may be faster for some highly redundant
 *      files if the parameter max_chain_length (described below) is too large.
 *
 *  ACKNOWLEDGEMENTS
 *
 *      The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
 *      I found it in 'freeze' written by Leonid Broukhis.
 *      Thanks to many people for bug reports and testing.
 *
 *  REFERENCES
 *
 *      Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
 *      Available in http://tools.ietf.org/html/rfc1951
 *
 *      A description of the Rabin and Karp algorithm is given in the book
 *         "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
 *
 *      Fiala,E.R., and Greene,D.H.
 *         Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
 *
 */

/* @(#) $Id$ */

#include "deflate.h"

const char deflate_copyright[] =
   " deflate 1.3.1 Copyright 1995-2024 Jean-loup Gailly and Mark Adler ";
/*
  If you use the zlib library in a product, an acknowledgment is welcome
  in the documentation of your product. If for some reason you cannot
  include such an acknowledgment, I would appreciate that you keep this
  copyright string in the executable of your product.
 */

typedef enum {
    need_more,      /* block not completed, need more input or more output */
    block_done,     /* block flush performed */
    finish_started, /* finish started, need only more output at next deflate */
    finish_done     /* finish done, accept no more input or output */
} block_state;

typedef block_state (*compress_func)(deflate_state *s, int flush);
/* Compression function. Returns the block state after the call. */

local block_state deflate_stored(deflate_state *s, int flush);
local block_state deflate_fast(deflate_state *s, int flush);
#ifndef FASTEST
local block_state deflate_slow(deflate_state *s, int flush);
#endif
local block_state deflate_rle(deflate_state *s, int flush);
local block_state deflate_huff(deflate_state *s, int flush);

/* ===========================================================================
 * Local data
 */

#define NIL 0
/* Tail of hash chains */

#ifndef TOO_FAR
#  define TOO_FAR 4096
#endif
/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */

/* Values for max_lazy_match, good_match and max_chain_length, depending on
 * the desired pack level (0..9). The values given below have been tuned to
 * exclude worst case performance for pathological files. Better values may be
 * found for specific files.
 */
typedef struct config_s {
   ush good_length; /* reduce lazy search above this match length */
   ush max_lazy;    /* do not perform lazy search above this match length */
   ush nice_length; /* quit search above this match length */
   ush max_chain;
   compress_func func;
} config;

#ifdef FASTEST
local const config configuration_table[2] = {
/*      good lazy nice chain */
/* 0 */ {0,    0,  0,    0, deflate_stored},  /* store only */
/* 1 */ {4,    4,  8,    4, deflate_fast}}; /* max speed, no lazy matches */
#else
local const config configuration_table[10] = {
/*      good lazy nice chain */
/* 0 */ {0,    0,  0,    0, deflate_stored},  /* store only */
/* 1 */ {4,    4,  8,    4, deflate_fast}, /* max speed, no lazy matches */
/* 2 */ {4,    5, 16,    8, deflate_fast},
/* 3 */ {4,    6, 32,   32, deflate_fast},

/* 4 */ {4,    4, 16,   16, deflate_slow},  /* lazy matches */
/* 5 */ {8,   16, 32,   32, deflate_slow},
/* 6 */ {8,   16, 128, 128, deflate_slow},
/* 7 */ {8,   32, 128, 256, deflate_slow},
/* 8 */ {32, 128, 258, 1024, deflate_slow},
/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */
#endif

/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
 * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
 * meaning.
 */

/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
#define RANK(f) (((f) * 2) - ((f) > 4 ? 9 : 0))

/* ===========================================================================
 * Update a hash value with the given input byte
 * IN  assertion: all calls to UPDATE_HASH are made with consecutive input
 *    characters, so that a running hash key can be computed from the previous
 *    key instead of complete recalculation each time.
 */
#define UPDATE_HASH(s,h,c) (h = (((h) << s->hash_shift) ^ (c)) & s->hash_mask)


/* ===========================================================================
 * Insert string str in the dictionary and set match_head to the previous head
 * of the hash chain (the most recent string with same hash key). Return
 * the previous length of the hash chain.
 * If this file is compiled with -DFASTEST, the compression level is forced
 * to 1, and no hash chains are maintained.
 * IN  assertion: all calls to INSERT_STRING are made with consecutive input
 *    characters and the first MIN_MATCH bytes of str are valid (except for
 *    the last MIN_MATCH-1 bytes of the input file).
 */
#ifdef FASTEST
#define INSERT_STRING(s, str, match_head) \
   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
    match_head = s->head[s->ins_h], \
    s->head[s->ins_h] = (Pos)(str))
#else
#define INSERT_STRING(s, str, match_head) \
   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
    match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \
    s->head[s->ins_h] = (Pos)(str))
#endif

/* ===========================================================================
 * Initialize the hash table (avoiding 64K overflow for 16 bit systems).
 * prev[] will be initialized on the fly.
 */
#define CLEAR_HASH(s) \
    do { \
        s->head[s->hash_size - 1] = NIL; \
        zmemzero((Bytef *)s->head, \
                 (unsigned)(s->hash_size - 1)*sizeof(*s->head)); \
    } while (0)

/* ===========================================================================
 * Slide the hash table when sliding the window down (could be avoided with 32
 * bit values at the expense of memory usage). We slide even when level == 0 to
 * keep the hash table consistent if we switch back to level > 0 later.
 */
#if defined(__has_feature)
#  if __has_feature(memory_sanitizer)
     __attribute__((no_sanitize("memory")))
#  endif
#endif
local void slide_hash(deflate_state *s) {
    unsigned n, m;
    Posf *p;
    uInt wsize = s->w_size;

    n = s->hash_size;
    p = &s->head[n];
    do {
        m = *--p;
        *p = (Pos)(m >= wsize ? m - wsize : NIL);
    } while (--n);
    n = wsize;
#ifndef FASTEST
    p = &s->prev[n];
    do {
        m = *--p;
        *p = (Pos)(m >= wsize ? m - wsize : NIL);
        /* If n is not on any hash chain, prev[n] is garbage but
         * its value will never be used.
         */
    } while (--n);
#endif
}

/* ===========================================================================
 * Read a new buffer from the current input stream, update the adler32
 * and total number of bytes read.  All deflate() input goes through
 * this function so some applications may wish to modify it to avoid
 * allocating a large strm->next_in buffer and copying from it.
 * (See also flush_pending()).
 */
local unsigned read_buf(z_streamp strm, Bytef *buf, unsigned size) {
    unsigned len = strm->avail_in;

    if (len > size) len = size;
    if (len == 0) return 0;

    strm->avail_in  -= len;

    zmemcpy(buf, strm->next_in, len);
    if (strm->state->wrap == 1) {
        strm->adler = adler32(strm->adler, buf, len);
    }
#ifdef GZIP
    else if (strm->state->wrap == 2) {
        strm->adler = crc32(strm->adler, buf, len);
    }
#endif
    strm->next_in  += len;
    strm->total_in += len;

    return len;
}

/* ===========================================================================
 * Fill the window when the lookahead becomes insufficient.
 * Updates strstart and lookahead.
 *
 * IN assertion: lookahead < MIN_LOOKAHEAD
 * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
 *    At least one byte has been read, or avail_in == 0; reads are
 *    performed for at least two bytes (required for the zip translate_eol
 *    option -- not supported here).
 */
local void fill_window(deflate_state *s) {
    unsigned n;
    unsigned more;    /* Amount of free space at the end of the window. */
    uInt wsize = s->w_size;

    Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");

    do {
        more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);

        /* Deal with !@#$% 64K limit: */
        if (sizeof(int) <= 2) {
            if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
                more = wsize;

            } else if (more == (unsigned)(-1)) {
                /* Very unlikely, but possible on 16 bit machine if
                 * strstart == 0 && lookahead == 1 (input done a byte at time)
                 */
                more--;
            }
        }

        /* If the window is almost full and there is insufficient lookahead,
         * move the upper half to the lower one to make room in the upper half.
         */
        if (s->strstart >= wsize + MAX_DIST(s)) {

            zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
            s->match_start -= wsize;
            s->strstart    -= wsize; /* we now have strstart >= MAX_DIST */
            s->block_start -= (long) wsize;
            if (s->insert > s->strstart)
                s->insert = s->strstart;
            slide_hash(s);
            more += wsize;
        }
        if (s->strm->avail_in == 0) break;

        /* If there was no sliding:
         *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
         *    more == window_size - lookahead - strstart
         * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
         * => more >= window_size - 2*WSIZE + 2
         * In the BIG_MEM or MMAP case (not yet supported),
         *   window_size == input_size + MIN_LOOKAHEAD  &&
         *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
         * Otherwise, window_size == 2*WSIZE so more >= 2.
         * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
         */
        Assert(more >= 2, "more < 2");

        n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
        s->lookahead += n;

        /* Initialize the hash value now that we have some input: */
        if (s->lookahead + s->insert >= MIN_MATCH) {
            uInt str = s->strstart - s->insert;
            s->ins_h = s->window[str];
            UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
#if MIN_MATCH != 3
            Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
            while (s->insert) {
                UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
#ifndef FASTEST
                s->prev[str & s->w_mask] = s->head[s->ins_h];
#endif
                s->head[s->ins_h] = (Pos)str;
                str++;
                s->insert--;
                if (s->lookahead + s->insert < MIN_MATCH)
                    break;
            }
        }
        /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
         * but this is not important since only literal bytes will be emitted.
         */

    } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);

    /* If the WIN_INIT bytes after the end of the current data have never been
     * written, then zero those bytes in order to avoid memory check reports of
     * the use of uninitialized (or uninitialised as Julian writes) bytes by
     * the longest match routines.  Update the high water mark for the next
     * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
     * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
     */
    if (s->high_water < s->window_size) {
        ulg curr = s->strstart + (ulg)(s->lookahead);
        ulg init;

        if (s->high_water < curr) {
            /* Previous high water mark below current data -- zero WIN_INIT
             * bytes or up to end of window, whichever is less.
             */
            init = s->window_size - curr;
            if (init > WIN_INIT)
                init = WIN_INIT;
            zmemzero(s->window + curr, (unsigned)init);
            s->high_water = curr + init;
        }
        else if (s->high_water < (ulg)curr + WIN_INIT) {
            /* High water mark at or above current data, but below current data
             * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
             * to end of window, whichever is less.
             */
            init = (ulg)curr + WIN_INIT - s->high_water;
            if (init > s->window_size - s->high_water)
                init = s->window_size - s->high_water;
            zmemzero(s->window + s->high_water, (unsigned)init);
            s->high_water += init;
        }
    }

    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
           "not enough room for search");
}

/* ========================================================================= */
int ZEXPORT deflateInit_(z_streamp strm, int level, const char *version,
                         int stream_size) {
    return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
                         Z_DEFAULT_STRATEGY, version, stream_size);
    /* To do: ignore strm->next_in if we use it as window */
}

/* ========================================================================= */
int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
                          int windowBits, int memLevel, int strategy,
                          const char *version, int stream_size) {
    deflate_state *s;
    int wrap = 1;
    static const char my_version[] = ZLIB_VERSION;

    if (version == Z_NULL || version[0] != my_version[0] ||
        stream_size != sizeof(z_stream)) {
        return Z_VERSION_ERROR;
    }
    if (strm == Z_NULL) return Z_STREAM_ERROR;

    strm->msg = Z_NULL;
    if (strm->zalloc == (alloc_func)0) {
#ifdef Z_SOLO
        return Z_STREAM_ERROR;
#else
        strm->zalloc = zcalloc;
        strm->opaque = (voidpf)0;
#endif
    }
    if (strm->zfree == (free_func)0)
#ifdef Z_SOLO
        return Z_STREAM_ERROR;
#else
        strm->zfree = zcfree;
#endif

#ifdef FASTEST
    if (level != 0) level = 1;
#else
    if (level == Z_DEFAULT_COMPRESSION) level = 6;
#endif

    if (windowBits < 0) { /* suppress zlib wrapper */
        wrap = 0;
        if (windowBits < -15)
            return Z_STREAM_ERROR;
        windowBits = -windowBits;
    }
#ifdef GZIP
    else if (windowBits > 15) {
        wrap = 2;       /* write gzip wrapper instead */
        windowBits -= 16;
    }
#endif
    if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
        windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
        strategy < 0 || strategy > Z_FIXED || (windowBits == 8 && wrap != 1)) {
        return Z_STREAM_ERROR;
    }
    if (windowBits == 8) windowBits = 9;  /* until 256-byte window bug fixed */
    s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
    if (s == Z_NULL) return Z_MEM_ERROR;
    strm->state = (struct internal_state FAR *)s;
    s->strm = strm;
    s->status = INIT_STATE;     /* to pass state test in deflateReset() */

    s->wrap = wrap;
    s->gzhead = Z_NULL;
    s->w_bits = (uInt)windowBits;
    s->w_size = 1 << s->w_bits;
    s->w_mask = s->w_size - 1;

    s->hash_bits = (uInt)memLevel + 7;
    s->hash_size = 1 << s->hash_bits;
    s->hash_mask = s->hash_size - 1;
    s->hash_shift =  ((s->hash_bits + MIN_MATCH-1) / MIN_MATCH);

    s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
    s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
    s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));

    s->high_water = 0;      /* nothing written to s->window yet */

    s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */

    /* We overlay pending_buf and sym_buf. This works since the average size
     * for length/distance pairs over any compressed block is assured to be 31
     * bits or less.
     *
     * Analysis: The longest fixed codes are a length code of 8 bits plus 5
     * extra bits, for lengths 131 to 257. The longest fixed distance codes are
     * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest
     * possible fixed-codes length/distance pair is then 31 bits total.
     *
     * sym_buf starts one-fourth of the way into pending_buf. So there are
     * three bytes in sym_buf for every four bytes in pending_buf. Each symbol
     * in sym_buf is three bytes -- two for the distance and one for the
     * literal/length. As each symbol is consumed, the pointer to the next
     * sym_buf value to read moves forward three bytes. From that symbol, up to
     * 31 bits are written to pending_buf. The closest the written pending_buf
     * bits gets to the next sym_buf symbol to read is just before the last
     * code is written. At that time, 31*(n - 2) bits have been written, just
     * after 24*(n - 2) bits have been consumed from sym_buf. sym_buf starts at
     * 8*n bits into pending_buf. (Note that the symbol buffer fills when n - 1
     * symbols are written.) The closest the writing gets to what is unread is
     * then n + 14 bits. Here n is lit_bufsize, which is 16384 by default, and
     * can range from 128 to 32768.
     *
     * Therefore, at a minimum, there are 142 bits of space between what is
     * written and what is read in the overlain buffers, so the symbols cannot
     * be overwritten by the compressed data. That space is actually 139 bits,
     * due to the three-bit fixed-code block header.
     *
     * That covers the case where either Z_FIXED is specified, forcing fixed
     * codes, or when the use of fixed codes is chosen, because that choice
     * results in a smaller compressed block than dynamic codes. That latter
     * condition then assures that the above analysis also covers all dynamic
     * blocks. A dynamic-code block will only be chosen to be emitted if it has
     * fewer bits than a fixed-code block would for the same set of symbols.
     * Therefore its average symbol length is assured to be less than 31. So
     * the compressed data for a dynamic block also cannot overwrite the
     * symbols from which it is being constructed.
     */

    s->pending_buf = (uchf *) ZALLOC(strm, s->lit_bufsize, LIT_BUFS);
    s->pending_buf_size = (ulg)s->lit_bufsize * 4;

    if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
        s->pending_buf == Z_NULL) {
        s->status = FINISH_STATE;
        strm->msg = ERR_MSG(Z_MEM_ERROR);
        deflateEnd (strm);
        return Z_MEM_ERROR;
    }
#ifdef LIT_MEM
    s->d_buf = (ushf *)(s->pending_buf + (s->lit_bufsize << 1));
    s->l_buf = s->pending_buf + (s->lit_bufsize << 2);
    s->sym_end = s->lit_bufsize - 1;
#else
    s->sym_buf = s->pending_buf + s->lit_bufsize;
    s->sym_end = (s->lit_bufsize - 1) * 3;
#endif
    /* We avoid equality with lit_bufsize*3 because of wraparound at 64K
     * on 16 bit machines and because stored blocks are restricted to
     * 64K-1 bytes.
     */

    s->level = level;
    s->strategy = strategy;
    s->method = (Byte)method;

    return deflateReset(strm);
}

/* =========================================================================
 * Check for a valid deflate stream state. Return 0 if ok, 1 if not.
 */
local int deflateStateCheck(z_streamp strm) {
    deflate_state *s;
    if (strm == Z_NULL ||
        strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
        return 1;
    s = strm->state;
    if (s == Z_NULL || s->strm != strm || (s->status != INIT_STATE &&
#ifdef GZIP
                                           s->status != GZIP_STATE &&
#endif
                                           s->status != EXTRA_STATE &&
                                           s->status != NAME_STATE &&
                                           s->status != COMMENT_STATE &&
                                           s->status != HCRC_STATE &&
                                           s->status != BUSY_STATE &&
                                           s->status != FINISH_STATE))
        return 1;
    return 0;
}

/* ========================================================================= */
int ZEXPORT deflateSetDictionary(z_streamp strm, const Bytef *dictionary,
                                 uInt  dictLength) {
    deflate_state *s;
    uInt str, n;
    int wrap;
    unsigned avail;
    z_const unsigned char *next;

    if (deflateStateCheck(strm) || dictionary == Z_NULL)
        return Z_STREAM_ERROR;
    s = strm->state;
    wrap = s->wrap;
    if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead)
        return Z_STREAM_ERROR;

    /* when using zlib wrappers, compute Adler-32 for provided dictionary */
    if (wrap == 1)
        strm->adler = adler32(strm->adler, dictionary, dictLength);
    s->wrap = 0;                    /* avoid computing Adler-32 in read_buf */

    /* if dictionary would fill window, just replace the history */
    if (dictLength >= s->w_size) {
        if (wrap == 0) {            /* already empty otherwise */
            CLEAR_HASH(s);
            s->strstart = 0;
            s->block_start = 0L;
            s->insert = 0;
        }
        dictionary += dictLength - s->w_size;  /* use the tail */
        dictLength = s->w_size;
    }

    /* insert dictionary into window and hash */
    avail = strm->avail_in;
    next = strm->next_in;
    strm->avail_in = dictLength;
    strm->next_in = (z_const Bytef *)dictionary;
    fill_window(s);
    while (s->lookahead >= MIN_MATCH) {
        str = s->strstart;
        n = s->lookahead - (MIN_MATCH-1);
        do {
            UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
#ifndef FASTEST
            s->prev[str & s->w_mask] = s->head[s->ins_h];
#endif
            s->head[s->ins_h] = (Pos)str;
            str++;
        } while (--n);
        s->strstart = str;
        s->lookahead = MIN_MATCH-1;
        fill_window(s);
    }
    s->strstart += s->lookahead;
    s->block_start = (long)s->strstart;
    s->insert = s->lookahead;
    s->lookahead = 0;
    s->match_length = s->prev_length = MIN_MATCH-1;
    s->match_available = 0;
    strm->next_in = next;
    strm->avail_in = avail;
    s->wrap = wrap;
    return Z_OK;
}

/* ========================================================================= */
int ZEXPORT deflateGetDictionary(z_streamp strm, Bytef *dictionary,
                                 uInt *dictLength) {
    deflate_state *s;
    uInt len;

    if (deflateStateCheck(strm))
        return Z_STREAM_ERROR;
    s = strm->state;
    len = s->strstart + s->lookahead;
    if (len > s->w_size)
        len = s->w_size;
    if (dictionary != Z_NULL && len)
        zmemcpy(dictionary, s->window + s->strstart + s->lookahead - len, len);
    if (dictLength != Z_NULL)
        *dictLength = len;
    return Z_OK;
}

/* ========================================================================= */
int ZEXPORT deflateResetKeep(z_streamp strm) {
    deflate_state *s;

    if (deflateStateCheck(strm)) {
        return Z_STREAM_ERROR;
    }

    strm->total_in = strm->total_out = 0;
    strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
    strm->data_type = Z_UNKNOWN;

    s = (deflate_state *)strm->state;
    s->pending = 0;
    s->pending_out = s->pending_buf;

    if (s->wrap < 0) {
        s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
    }
    s->status =
#ifdef GZIP
        s->wrap == 2 ? GZIP_STATE :
#endif
        INIT_STATE;
    strm->adler =
#ifdef GZIP
        s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
#endif
        adler32(0L, Z_NULL, 0);
    s->last_flush = -2;

    _tr_init(s);

    return Z_OK;
}

/* ===========================================================================
 * Initialize the "longest match" routines for a new zlib stream
 */
local void lm_init(deflate_state *s) {
    s->window_size = (ulg)2L*s->w_size;

    CLEAR_HASH(s);

    /* Set the default configuration parameters:
     */
    s->max_lazy_match   = configuration_table[s->level].max_lazy;
    s->good_match       = configuration_table[s->level].good_length;
    s->nice_match       = configuration_table[s->level].nice_length;
    s->max_chain_length = configuration_table[s->level].max_chain;

    s->strstart = 0;
    s->block_start = 0L;
    s->lookahead = 0;
    s->insert = 0;
    s->match_length = s->prev_length = MIN_MATCH-1;
    s->match_available = 0;
    s->ins_h = 0;
}

/* ========================================================================= */
int ZEXPORT deflateReset(z_streamp strm) {
    int ret;

    ret = deflateResetKeep(strm);
    if (ret == Z_OK)
        lm_init(strm->state);
    return ret;
}

/* ========================================================================= */
int ZEXPORT deflateSetHeader(z_streamp strm, gz_headerp head) {
    if (deflateStateCheck(strm) || strm->state->wrap != 2)
        return Z_STREAM_ERROR;
    strm->state->gzhead = head;
    return Z_OK;
}

/* ========================================================================= */
int ZEXPORT deflatePending(z_streamp strm, unsigned *pending, int *bits) {
    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
    if (pending != Z_NULL)
        *pending = strm->state->pending;
    if (bits != Z_NULL)
        *bits = strm->state->bi_valid;
    return Z_OK;
}

/* ========================================================================= */
int ZEXPORT deflatePrime(z_streamp strm, int bits, int value) {
    deflate_state *s;
    int put;

    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
    s = strm->state;
#ifdef LIT_MEM
    if (bits < 0 || bits > 16 ||
        (uchf *)s->d_buf < s->pending_out + ((Buf_size + 7) >> 3))
        return Z_BUF_ERROR;
#else
    if (bits < 0 || bits > 16 ||
        s->sym_buf < s->pending_out + ((Buf_size + 7) >> 3))
        return Z_BUF_ERROR;
#endif
    do {
        put = Buf_size - s->bi_valid;
        if (put > bits)
            put = bits;
        s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid);
        s->bi_valid += put;
        _tr_flush_bits(s);
        value >>= put;
        bits -= put;
    } while (bits);
    return Z_OK;
}

/* ========================================================================= */
int ZEXPORT deflateParams(z_streamp strm, int level, int strategy) {
    deflate_state *s;
    compress_func func;

    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
    s = strm->state;

#ifdef FASTEST
    if (level != 0) level = 1;
#else
    if (level == Z_DEFAULT_COMPRESSION) level = 6;
#endif
    if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) {
        return Z_STREAM_ERROR;
    }
    func = configuration_table[s->level].func;

    if ((strategy != s->strategy || func != configuration_table[level].func) &&
        s->last_flush != -2) {
        /* Flush the last buffer: */
        int err = deflate(strm, Z_BLOCK);
        if (err == Z_STREAM_ERROR)
            return err;
        if (strm->avail_in || (s->strstart - s->block_start) + s->lookahead)
            return Z_BUF_ERROR;
    }
    if (s->level != level) {
        if (s->level == 0 && s->matches != 0) {
            if (s->matches == 1)
                slide_hash(s);
            else
                CLEAR_HASH(s);
            s->matches = 0;
        }
        s->level = level;
        s->max_lazy_match   = configuration_table[level].max_lazy;
        s->good_match       = configuration_table[level].good_length;
        s->nice_match       = configuration_table[level].nice_length;
        s->max_chain_length = configuration_table[level].max_chain;
    }
    s->strategy = strategy;
    return Z_OK;
}

/* ========================================================================= */
int ZEXPORT deflateTune(z_streamp strm, int good_length, int max_lazy,
                        int nice_length, int max_chain) {
    deflate_state *s;

    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
    s = strm->state;
    s->good_match = (uInt)good_length;
    s->max_lazy_match = (uInt)max_lazy;
    s->nice_match = nice_length;
    s->max_chain_length = (uInt)max_chain;
    return Z_OK;
}

/* =========================================================================
 * For the default windowBits of 15 and memLevel of 8, this function returns a
 * close to exact, as well as small, upper bound on the compressed size. This
 * is an expansion of ~0.03%, plus a small constant.
 *
 * For any setting other than those defaults for windowBits and memLevel, one
 * of two worst case bounds is returned. This is at most an expansion of ~4% or
 * ~13%, plus a small constant.
 *
 * Both the 0.03% and 4% derive from the overhead of stored blocks. The first
 * one is for stored blocks of 16383 bytes (memLevel == 8), whereas the second
 * is for stored blocks of 127 bytes (the worst case memLevel == 1). The
 * expansion results from five bytes of header for each stored block.
 *
 * The larger expansion of 13% results from a window size less than or equal to
 * the symbols buffer size (windowBits <= memLevel + 7). In that case some of
 * the data being compressed may have slid out of the sliding window, impeding
 * a stored block from being emitted. Then the only choice is a fixed or
 * dynamic block, where a fixed block limits the maximum expansion to 9 bits
 * per 8-bit byte, plus 10 bits for every block. The smallest block size for
 * which this can occur is 255 (memLevel == 2).
 *
 * Shifts are used to approximate divisions, for speed.
 */
uLong ZEXPORT deflateBound(z_streamp strm, uLong sourceLen) {
    deflate_state *s;
    uLong fixedlen, storelen, wraplen;

    /* upper bound for fixed blocks with 9-bit literals and length 255
       (memLevel == 2, which is the lowest that may not use stored blocks) --
       ~13% overhead plus a small constant */
    fixedlen = sourceLen + (sourceLen >> 3) + (sourceLen >> 8) +
               (sourceLen >> 9) + 4;

    /* upper bound for stored blocks with length 127 (memLevel == 1) --
       ~4% overhead plus a small constant */
    storelen = sourceLen + (sourceLen >> 5) + (sourceLen >> 7) +
               (sourceLen >> 11) + 7;

    /* if can't get parameters, return larger bound plus a zlib wrapper */
    if (deflateStateCheck(strm))
        return (fixedlen > storelen ? fixedlen : storelen) + 6;

    /* compute wrapper length */
    s = strm->state;
    switch (s->wrap) {
    case 0:                                 /* raw deflate */
        wraplen = 0;
        break;
    case 1:                                 /* zlib wrapper */
        wraplen = 6 + (s->strstart ? 4 : 0);
        break;
#ifdef GZIP
    case 2:                                 /* gzip wrapper */
        wraplen = 18;
        if (s->gzhead != Z_NULL) {          /* user-supplied gzip header */
            Bytef *str;
            if (s->gzhead->extra != Z_NULL)
                wraplen += 2 + s->gzhead->extra_len;
            str = s->gzhead->name;
            if (str != Z_NULL)
                do {
                    wraplen++;
                } while (*str++);
            str = s->gzhead->comment;
            if (str != Z_NULL)
                do {
                    wraplen++;
                } while (*str++);
            if (s->gzhead->hcrc)
                wraplen += 2;
        }
        break;
#endif
    default:                                /* for compiler happiness */
        wraplen = 6;
    }

    /* if not default parameters, return one of the conservative bounds */
    if (s->w_bits != 15 || s->hash_bits != 8 + 7)
        return (s->w_bits <= s->hash_bits && s->level ? fixedlen : storelen) +
               wraplen;

    /* default settings: return tight bound for that case -- ~0.03% overhead
       plus a small constant */
    return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
           (sourceLen >> 25) + 13 - 6 + wraplen;
}

/* =========================================================================
 * Put a short in the pending buffer. The 16-bit value is put in MSB order.
 * IN assertion: the stream state is correct and there is enough room in
 * pending_buf.
 */
local void putShortMSB(deflate_state *s, uInt b) {
    put_byte(s, (Byte)(b >> 8));
    put_byte(s, (Byte)(b & 0xff));
}

/* =========================================================================
 * Flush as much pending output as possible. All deflate() output, except for
 * some deflate_stored() output, goes through this function so some
 * applications may wish to modify it to avoid allocating a large
 * strm->next_out buffer and copying into it. (See also read_buf()).
 */
local void flush_pending(z_streamp strm) {
    unsigned len;
    deflate_state *s = strm->state;

    _tr_flush_bits(s);
    len = s->pending;
    if (len > strm->avail_out) len = strm->avail_out;
    if (len == 0) return;

    zmemcpy(strm->next_out, s->pending_out, len);
    strm->next_out  += len;
    s->pending_out  += len;
    strm->total_out += len;
    strm->avail_out -= len;
    s->pending      -= len;
    if (s->pending == 0) {
        s->pending_out = s->pending_buf;
    }
}

/* ===========================================================================
 * Update the header CRC with the bytes s->pending_buf[beg..s->pending - 1].
 */
#define HCRC_UPDATE(beg) \
    do { \
        if (s->gzhead->hcrc && s->pending > (beg)) \
            strm->adler = crc32(strm->adler, s->pending_buf + (beg), \
                                s->pending - (beg)); \
    } while (0)

/* ========================================================================= */
int ZEXPORT deflate(z_streamp strm, int flush) {
    int old_flush; /* value of flush param for previous deflate call */
    deflate_state *s;

    if (deflateStateCheck(strm) || flush > Z_BLOCK || flush < 0) {
        return Z_STREAM_ERROR;
    }
    s = strm->state;

    if (strm->next_out == Z_NULL ||
        (strm->avail_in != 0 && strm->next_in == Z_NULL) ||
        (s->status == FINISH_STATE && flush != Z_FINISH)) {
        ERR_RETURN(strm, Z_STREAM_ERROR);
    }
    if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);

    old_flush = s->last_flush;
    s->last_flush = flush;

    /* Flush as much pending output as possible */
    if (s->pending != 0) {
        flush_pending(strm);
        if (strm->avail_out == 0) {
            /* Since avail_out is 0, deflate will be called again with
             * more output space, but possibly with both pending and
             * avail_in equal to zero. There won't be anything to do,
             * but this is not an error situation so make sure we
             * return OK instead of BUF_ERROR at next call of deflate:
             */
            s->last_flush = -1;
            return Z_OK;
        }

    /* Make sure there is something to do and avoid duplicate consecutive
     * flushes. For repeated and useless calls with Z_FINISH, we keep
     * returning Z_STREAM_END instead of Z_BUF_ERROR.
     */
    } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
               flush != Z_FINISH) {
        ERR_RETURN(strm, Z_BUF_ERROR);
    }

    /* User must not provide more input after the first FINISH: */
    if (s->status == FINISH_STATE && strm->avail_in != 0) {
        ERR_RETURN(strm, Z_BUF_ERROR);
    }

    /* Write the header */
    if (s->status == INIT_STATE && s->wrap == 0)
        s->status = BUSY_STATE;
    if (s->status == INIT_STATE) {
        /* zlib header */
        uInt header = (Z_DEFLATED + ((s->w_bits - 8) << 4)) << 8;
        uInt level_flags;

        if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
            level_flags = 0;
        else if (s->level < 6)
            level_flags = 1;
        else if (s->level == 6)
            level_flags = 2;
        else
            level_flags = 3;
        header |= (level_flags << 6);
        if (s->strstart != 0) header |= PRESET_DICT;
        header += 31 - (header % 31);

        putShortMSB(s, header);

        /* Save the adler32 of the preset dictionary: */
        if (s->strstart != 0) {
            putShortMSB(s, (uInt)(strm->adler >> 16));
            putShortMSB(s, (uInt)(strm->adler & 0xffff));
        }
        strm->adler = adler32(0L, Z_NULL, 0);
        s->status = BUSY_STATE;

        /* Compression must start with an empty pending buffer */
        flush_pending(strm);
        if (s->pending != 0) {
            s->last_flush = -1;
            return Z_OK;
        }
    }
#ifdef GZIP
    if (s->status == GZIP_STATE) {
        /* gzip header */
        strm->adler = crc32(0L, Z_NULL, 0);
        put_byte(s, 31);
        put_byte(s, 139);
        put_byte(s, 8);
        if (s->gzhead == Z_NULL) {
            put_byte(s, 0);
            put_byte(s, 0);
            put_byte(s, 0);
            put_byte(s, 0);
            put_byte(s, 0);
            put_byte(s, s->level == 9 ? 2 :
                     (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
                      4 : 0));
            put_byte(s, OS_CODE);
            s->status = BUSY_STATE;

            /* Compression must start with an empty pending buffer */
            flush_pending(strm);
            if (s->pending != 0) {
                s->last_flush = -1;
                return Z_OK;
            }
        }
        else {
            put_byte(s, (s->gzhead->text ? 1 : 0) +
                     (s->gzhead->hcrc ? 2 : 0) +
                     (s->gzhead->extra == Z_NULL ? 0 : 4) +
                     (s->gzhead->name == Z_NULL ? 0 : 8) +
                     (s->gzhead->comment == Z_NULL ? 0 : 16)
                     );
            put_byte(s, (Byte)(s->gzhead->time & 0xff));
            put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));
            put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));
            put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));
            put_byte(s, s->level == 9 ? 2 :
                     (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
                      4 : 0));
            put_byte(s, s->gzhead->os & 0xff);
            if (s->gzhead->extra != Z_NULL) {
                put_byte(s, s->gzhead->extra_len & 0xff);
                put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
            }
            if (s->gzhead->hcrc)
                strm->adler = crc32(strm->adler, s->pending_buf,
                                    s->pending);
            s->gzindex = 0;
            s->status = EXTRA_STATE;
        }
    }
    if (s->status == EXTRA_STATE) {
        if (s->gzhead->extra != Z_NULL) {
            ulg beg = s->pending;   /* start of bytes to update crc */
            uInt left = (s->gzhead->extra_len & 0xffff) - s->gzindex;
            while (s->pending + left > s->pending_buf_size) {
                uInt copy = s->pending_buf_size - s->pending;
                zmemcpy(s->pending_buf + s->pending,
                        s->gzhead->extra + s->gzindex, copy);
                s->pending = s->pending_buf_size;
                HCRC_UPDATE(beg);
                s->gzindex += copy;
                flush_pending(strm);
                if (s->pending != 0) {
                    s->last_flush = -1;
                    return Z_OK;
                }
                beg = 0;
                left -= copy;
            }
            zmemcpy(s->pending_buf + s->pending,
                    s->gzhead->extra + s->gzindex, left);
            s->pending += left;
            HCRC_UPDATE(beg);
            s->gzindex = 0;
        }
        s->status = NAME_STATE;
    }
    if (s->status == NAME_STATE) {
        if (s->gzhead->name != Z_NULL) {
            ulg beg = s->pending;   /* start of bytes to update crc */
            int val;
            do {
                if (s->pending == s->pending_buf_size) {
                    HCRC_UPDATE(beg);
                    flush_pending(strm);
                    if (s->pending != 0) {
                        s->last_flush = -1;
                        return Z_OK;
                    }
                    beg = 0;
                }
                val = s->gzhead->name[s->gzindex++];
                put_byte(s, val);
            } while (val != 0);
            HCRC_UPDATE(beg);
            s->gzindex = 0;
        }
        s->status = COMMENT_STATE;
    }
    if (s->status == COMMENT_STATE) {
        if (s->gzhead->comment != Z_NULL) {
            ulg beg = s->pending;   /* start of bytes to update crc */
            int val;
            do {
                if (s->pending == s->pending_buf_size) {
                    HCRC_UPDATE(beg);
                    flush_pending(strm);
                    if (s->pending != 0) {
                        s->last_flush = -1;
                        return Z_OK;
                    }
                    beg = 0;
                }
                val = s->gzhead->comment[s->gzindex++];
                put_byte(s, val);
            } while (val != 0);
            HCRC_UPDATE(beg);
        }
        s->status = HCRC_STATE;
    }
    if (s->status == HCRC_STATE) {
        if (s->gzhead->hcrc) {
            if (s->pending + 2 > s->pending_buf_size) {
                flush_pending(strm);
                if (s->pending != 0) {
                    s->last_flush = -1;
                    return Z_OK;
                }
            }
            put_byte(s, (Byte)(strm->adler & 0xff));
            put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
            strm->adler = crc32(0L, Z_NULL, 0);
        }
        s->status = BUSY_STATE;

        /* Compression must start with an empty pending buffer */
        flush_pending(strm);
        if (s->pending != 0) {
            s->last_flush = -1;
            return Z_OK;
        }
    }
#endif

    /* Start a new block or continue the current one.
     */
    if (strm->avail_in != 0 || s->lookahead != 0 ||
        (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
        block_state bstate;

        bstate = s->level == 0 ? deflate_stored(s, flush) :
                 s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
                 s->strategy == Z_RLE ? deflate_rle(s, flush) :
                 (*(configuration_table[s->level].func))(s, flush);

        if (bstate == finish_started || bstate == finish_done) {
            s->status = FINISH_STATE;
        }
        if (bstate == need_more || bstate == finish_started) {
            if (strm->avail_out == 0) {
                s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
            }
            return Z_OK;
            /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
             * of deflate should use the same flush parameter to make sure
             * that the flush is complete. So we don't have to output an
             * empty block here, this will be done at next call. This also
             * ensures that for a very small output buffer, we emit at most
             * one empty block.
             */
        }
        if (bstate == block_done) {
            if (flush == Z_PARTIAL_FLUSH) {
                _tr_align(s);
            } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
                _tr_stored_block(s, (char*)0, 0L, 0);
                /* For a full flush, this empty block will be recognized
                 * as a special marker by inflate_sync().
                 */
                if (flush == Z_FULL_FLUSH) {
                    CLEAR_HASH(s);             /* forget history */
                    if (s->lookahead == 0) {
                        s->strstart = 0;
                        s->block_start = 0L;
                        s->insert = 0;
                    }
                }
            }
            flush_pending(strm);
            if (strm->avail_out == 0) {
              s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
              return Z_OK;
            }
        }
    }

    if (flush != Z_FINISH) return Z_OK;
    if (s->wrap <= 0) return Z_STREAM_END;

    /* Write the trailer */
#ifdef GZIP
    if (s->wrap == 2) {
        put_byte(s, (Byte)(strm->adler & 0xff));
        put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
        put_byte(s, (Byte)((strm->adler >> 16) & 0xff));
        put_byte(s, (Byte)((strm->adler >> 24) & 0xff));
        put_byte(s, (Byte)(strm->total_in & 0xff));
        put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));
        put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));
        put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));
    }
    else
#endif
    {
        putShortMSB(s, (uInt)(strm->adler >> 16));
        putShortMSB(s, (uInt)(strm->adler & 0xffff));
    }
    flush_pending(strm);
    /* If avail_out is zero, the application will call deflate again
     * to flush the rest.
     */
    if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */
    return s->pending != 0 ? Z_OK : Z_STREAM_END;
}

/* ========================================================================= */
int ZEXPORT deflateEnd(z_streamp strm) {
    int status;

    if (deflateStateCheck(strm)) return Z_STREAM_ERROR;

    status = strm->state->status;

    /* Deallocate in reverse order of allocations: */
    TRY_FREE(strm, strm->state->pending_buf);
    TRY_FREE(strm, strm->state->head);
    TRY_FREE(strm, strm->state->prev);
    TRY_FREE(strm, strm->state->window);

    ZFREE(strm, strm->state);
    strm->state = Z_NULL;

    return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
}

/* =========================================================================
 * Copy the source state to the destination state.
 * To simplify the source, this is not supported for 16-bit MSDOS (which
 * doesn't have enough memory anyway to duplicate compression states).
 */
int ZEXPORT deflateCopy(z_streamp dest, z_streamp source) {
#ifdef MAXSEG_64K
    (void)dest;
    (void)source;
    return Z_STREAM_ERROR;
#else
    deflate_state *ds;
    deflate_state *ss;


    if (deflateStateCheck(source) || dest == Z_NULL) {
        return Z_STREAM_ERROR;
    }

    ss = source->state;

    zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));

    ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
    if (ds == Z_NULL) return Z_MEM_ERROR;
    dest->state = (struct internal_state FAR *) ds;
    zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state));
    ds->strm = dest;

    ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
    ds->prev   = (Posf *)  ZALLOC(dest, ds->w_size, sizeof(Pos));
    ds->head   = (Posf *)  ZALLOC(dest, ds->hash_size, sizeof(Pos));
    ds->pending_buf = (uchf *) ZALLOC(dest, ds->lit_bufsize, LIT_BUFS);

    if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
        ds->pending_buf == Z_NULL) {
        deflateEnd (dest);
        return Z_MEM_ERROR;
    }
    /* following zmemcpy do not work for 16-bit MSDOS */
    zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
    zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
    zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
    zmemcpy(ds->pending_buf, ss->pending_buf, ds->lit_bufsize * LIT_BUFS);

    ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
#ifdef LIT_MEM
    ds->d_buf = (ushf *)(ds->pending_buf + (ds->lit_bufsize << 1));
    ds->l_buf = ds->pending_buf + (ds->lit_bufsize << 2);
#else
    ds->sym_buf = ds->pending_buf + ds->lit_bufsize;
#endif

    ds->l_desc.dyn_tree = ds->dyn_ltree;
    ds->d_desc.dyn_tree = ds->dyn_dtree;
    ds->bl_desc.dyn_tree = ds->bl_tree;

    return Z_OK;
#endif /* MAXSEG_64K */
}

#ifndef FASTEST
/* ===========================================================================
 * Set match_start to the longest match starting at the given string and
 * return its length. Matches shorter or equal to prev_length are discarded,
 * in which case the result is equal to prev_length and match_start is
 * garbage.
 * IN assertions: cur_match is the head of the hash chain for the current
 *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
 * OUT assertion: the match length is not greater than s->lookahead.
 */
local uInt longest_match(deflate_state *s, IPos cur_match) {
    unsigned chain_length = s->max_chain_length;/* max hash chain length */
    register Bytef *scan = s->window + s->strstart; /* current string */
    register Bytef *match;                      /* matched string */
    register int len;                           /* length of current match */
    int best_len = (int)s->prev_length;         /* best match length so far */
    int nice_match = s->nice_match;             /* stop if match long enough */
    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
        s->strstart - (IPos)MAX_DIST(s) : NIL;
    /* Stop when cur_match becomes <= limit. To simplify the code,
     * we prevent matches with the string of window index 0.
     */
    Posf *prev = s->prev;
    uInt wmask = s->w_mask;

#ifdef UNALIGNED_OK
    /* Compare two bytes at a time. Note: this is not always beneficial.
     * Try with and without -DUNALIGNED_OK to check.
     */
    register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
    register ush scan_start = *(ushf*)scan;
    register ush scan_end   = *(ushf*)(scan + best_len - 1);
#else
    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
    register Byte scan_end1  = scan[best_len - 1];
    register Byte scan_end   = scan[best_len];
#endif

    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
     * It is easy to get rid of this optimization if necessary.
     */
    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

    /* Do not waste too much time if we already have a good match: */
    if (s->prev_length >= s->good_match) {
        chain_length >>= 2;
    }
    /* Do not look for matches beyond the end of the input. This is necessary
     * to make deflate deterministic.
     */
    if ((uInt)nice_match > s->lookahead) nice_match = (int)s->lookahead;

    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
           "need lookahead");

    do {
        Assert(cur_match < s->strstart, "no future");
        match = s->window + cur_match;

        /* Skip to next match if the match length cannot increase
         * or if the match length is less than 2.  Note that the checks below
         * for insufficient lookahead only occur occasionally for performance
         * reasons.  Therefore uninitialized memory will be accessed, and
         * conditional jumps will be made that depend on those values.
         * However the length of the match is limited to the lookahead, so
         * the output of deflate is not affected by the uninitialized values.
         */
#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
        /* This code assumes sizeof(unsigned short) == 2. Do not use
         * UNALIGNED_OK if your compiler uses a different size.
         */
        if (*(ushf*)(match + best_len - 1) != scan_end ||
            *(ushf*)match != scan_start) continue;

        /* It is not necessary to compare scan[2] and match[2] since they are
         * always equal when the other bytes match, given that the hash keys
         * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
         * strstart + 3, + 5, up to strstart + 257. We check for insufficient
         * lookahead only every 4th comparison; the 128th check will be made
         * at strstart + 257. If MAX_MATCH-2 is not a multiple of 8, it is
         * necessary to put more guard bytes at the end of the window, or
         * to check more often for insufficient lookahead.
         */
        Assert(scan[2] == match[2], "scan[2]?");
        scan++, match++;
        do {
        } while (*(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
                 *(ushf*)(scan += 2) == *(ushf*)(match += 2) &&
                 scan < strend);
        /* The funny "do {}" generates better code on most compilers */

        /* Here, scan <= window + strstart + 257 */
        Assert(scan <= s->window + (unsigned)(s->window_size - 1),
               "wild scan");
        if (*scan == *match) scan++;

        len = (MAX_MATCH - 1) - (int)(strend - scan);
        scan = strend - (MAX_MATCH-1);

#else /* UNALIGNED_OK */

        if (match[best_len]     != scan_end  ||
            match[best_len - 1] != scan_end1 ||
            *match              != *scan     ||
            *++match            != scan[1])      continue;

        /* The check at best_len - 1 can be removed because it will be made
         * again later. (This heuristic is not always a win.)
         * It is not necessary to compare scan[2] and match[2] since they
         * are always equal when the other bytes match, given that
         * the hash keys are equal and that HASH_BITS >= 8.
         */
        scan += 2, match++;
        Assert(*scan == *match, "match[2]?");

        /* We check for insufficient lookahead only every 8th comparison;
         * the 256th check will be made at strstart + 258.
         */
        do {
        } while (*++scan == *++match && *++scan == *++match &&
                 *++scan == *++match && *++scan == *++match &&
                 *++scan == *++match && *++scan == *++match &&
                 *++scan == *++match && *++scan == *++match &&
                 scan < strend);

        Assert(scan <= s->window + (unsigned)(s->window_size - 1),
               "wild scan");

        len = MAX_MATCH - (int)(strend - scan);
        scan = strend - MAX_MATCH;

#endif /* UNALIGNED_OK */

        if (len > best_len) {
            s->match_start = cur_match;
            best_len = len;
            if (len >= nice_match) break;
#ifdef UNALIGNED_OK
            scan_end = *(ushf*)(scan + best_len - 1);
#else
            scan_end1  = scan[best_len - 1];
            scan_end   = scan[best_len];
#endif
        }
    } while ((cur_match = prev[cur_match & wmask]) > limit
             && --chain_length != 0);

    if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
    return s->lookahead;
}

#else /* FASTEST */

/* ---------------------------------------------------------------------------
 * Optimized version for FASTEST only
 */
local uInt longest_match(deflate_state *s, IPos cur_match) {
    register Bytef *scan = s->window + s->strstart; /* current string */
    register Bytef *match;                       /* matched string */
    register int len;                           /* length of current match */
    register Bytef *strend = s->window + s->strstart + MAX_MATCH;

    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
     * It is easy to get rid of this optimization if necessary.
     */
    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");

    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
           "need lookahead");

    Assert(cur_match < s->strstart, "no future");

    match = s->window + cur_match;

    /* Return failure if the match length is less than 2:
     */
    if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;

    /* The check at best_len - 1 can be removed because it will be made
     * again later. (This heuristic is not always a win.)
     * It is not necessary to compare scan[2] and match[2] since they
     * are always equal when the other bytes match, given that
     * the hash keys are equal and that HASH_BITS >= 8.
     */
    scan += 2, match += 2;
    Assert(*scan == *match, "match[2]?");

    /* We check for insufficient lookahead only every 8th comparison;
     * the 256th check will be made at strstart + 258.
     */
    do {
    } while (*++scan == *++match && *++scan == *++match &&
             *++scan == *++match && *++scan == *++match &&
             *++scan == *++match && *++scan == *++match &&
             *++scan == *++match && *++scan == *++match &&
             scan < strend);

    Assert(scan <= s->window + (unsigned)(s->window_size - 1), "wild scan");

    len = MAX_MATCH - (int)(strend - scan);

    if (len < MIN_MATCH) return MIN_MATCH - 1;

    s->match_start = cur_match;
    return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;
}

#endif /* FASTEST */

#ifdef ZLIB_DEBUG

#define EQUAL 0
/* result of memcmp for equal strings */

/* ===========================================================================
 * Check that the match at match_start is indeed a match.
 */
local void check_match(deflate_state *s, IPos start, IPos match, int length) {
    /* check that the match is indeed a match */
    Bytef *back = s->window + (int)match, *here = s->window + start;
    IPos len = length;
    if (match == (IPos)-1) {
        /* match starts one byte before the current window -- just compare the
           subsequent length-1 bytes */
        back++;
        here++;
        len--;
    }
    if (zmemcmp(back, here, len) != EQUAL) {
        fprintf(stderr, " start %u, match %d, length %d\n",
                start, (int)match, length);
        do {
            fprintf(stderr, "(%02x %02x)", *back++, *here++);
        } while (--len != 0);
        z_error("invalid match");
    }
    if (z_verbose > 1) {
        fprintf(stderr,"\\[%d,%d]", start - match, length);
        do { putc(s->window[start++], stderr); } while (--length != 0);
    }
}
#else
#  define check_match(s, start, match, length)
#endif /* ZLIB_DEBUG */

/* ===========================================================================
 * Flush the current block, with given end-of-file flag.
 * IN assertion: strstart is set to the end of the current match.
 */
#define FLUSH_BLOCK_ONLY(s, last) { \
   _tr_flush_block(s, (s->block_start >= 0L ? \
                   (charf *)&s->window[(unsigned)s->block_start] : \
                   (charf *)Z_NULL), \
                (ulg)((long)s->strstart - s->block_start), \
                (last)); \
   s->block_start = s->strstart; \
   flush_pending(s->strm); \
   Tracev((stderr,"[FLUSH]")); \
}

/* Same but force premature exit if necessary. */
#define FLUSH_BLOCK(s, last) { \
   FLUSH_BLOCK_ONLY(s, last); \
   if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \
}

/* Maximum stored block length in deflate format (not including header). */
#define MAX_STORED 65535

/* Minimum of a and b. */
#define MIN(a, b) ((a) > (b) ? (b) : (a))

/* ===========================================================================
 * Copy without compression as much as possible from the input stream, return
 * the current block state.
 *
 * In case deflateParams() is used to later switch to a non-zero compression
 * level, s->matches (otherwise unused when storing) keeps track of the number
 * of hash table slides to perform. If s->matches is 1, then one hash table
 * slide will be done when switching. If s->matches is 2, the maximum value
 * allowed here, then the hash table will be cleared, since two or more slides
 * is the same as a clear.
 *
 * deflate_stored() is written to minimize the number of times an input byte is
 * copied. It is most efficient with large input and output buffers, which
 * maximizes the opportunities to have a single copy from next_in to next_out.
 */
local block_state deflate_stored(deflate_state *s, int flush) {
    /* Smallest worthy block size when not flushing or finishing. By default
     * this is 32K. This can be as small as 507 bytes for memLevel == 1. For
     * large input and output buffers, the stored block size will be larger.
     */
    unsigned min_block = MIN(s->pending_buf_size - 5, s->w_size);

    /* Copy as many min_block or larger stored blocks directly to next_out as
     * possible. If flushing, copy the remaining available input to next_out as
     * stored blocks, if there is enough space.
     */
    unsigned len, left, have, last = 0;
    unsigned used = s->strm->avail_in;
    do {
        /* Set len to the maximum size block that we can copy directly with the
         * available input data and output space. Set left to how much of that
         * would be copied from what's left in the window.
         */
        len = MAX_STORED;       /* maximum deflate stored block length */
        have = (s->bi_valid + 42) >> 3;         /* number of header bytes */
        if (s->strm->avail_out < have)          /* need room for header */
            break;
            /* maximum stored block length that will fit in avail_out: */
        have = s->strm->avail_out - have;
        left = s->strstart - s->block_start;    /* bytes left in window */
        if (len > (ulg)left + s->strm->avail_in)
            len = left + s->strm->avail_in;     /* limit len to the input */
        if (len > have)
            len = have;                         /* limit len to the output */

        /* If the stored block would be less than min_block in length, or if
         * unable to copy all of the available input when flushing, then try
         * copying to the window and the pending buffer instead. Also don't
         * write an empty block when flushing -- deflate() does that.
         */
        if (len < min_block && ((len == 0 && flush != Z_FINISH) ||
                                flush == Z_NO_FLUSH ||
                                len != left + s->strm->avail_in))
            break;

        /* Make a dummy stored block in pending to get the header bytes,
         * including any pending bits. This also updates the debugging counts.
         */
        last = flush == Z_FINISH && len == left + s->strm->avail_in ? 1 : 0;
        _tr_stored_block(s, (char *)0, 0L, last);

        /* Replace the lengths in the dummy stored block with len. */
        s->pending_buf[s->pending - 4] = len;
        s->pending_buf[s->pending - 3] = len >> 8;
        s->pending_buf[s->pending - 2] = ~len;
        s->pending_buf[s->pending - 1] = ~len >> 8;

        /* Write the stored block header bytes. */
        flush_pending(s->strm);

#ifdef ZLIB_DEBUG
        /* Update debugging counts for the data about to be copied. */
        s->compressed_len += len << 3;
        s->bits_sent += len << 3;
#endif

        /* Copy uncompressed bytes from the window to next_out. */
        if (left) {
            if (left > len)
                left = len;
            zmemcpy(s->strm->next_out, s->window + s->block_start, left);
            s->strm->next_out += left;
            s->strm->avail_out -= left;
            s->strm->total_out += left;
            s->block_start += left;
            len -= left;
        }

        /* Copy uncompressed bytes directly from next_in to next_out, updating
         * the check value.
         */
        if (len) {
            read_buf(s->strm, s->strm->next_out, len);
            s->strm->next_out += len;
            s->strm->avail_out -= len;
            s->strm->total_out += len;
        }
    } while (last == 0);

    /* Update the sliding window with the last s->w_size bytes of the copied
     * data, or append all of the copied data to the existing window if less
     * than s->w_size bytes were copied. Also update the number of bytes to
     * insert in the hash tables, in the event that deflateParams() switches to
     * a non-zero compression level.
     */
    used -= s->strm->avail_in;      /* number of input bytes directly copied */
    if (used) {
        /* If any input was used, then no unused input remains in the window,
         * therefore s->block_start == s->strstart.
         */
        if (used >= s->w_size) {    /* supplant the previous history */
            s->matches = 2;         /* clear hash */
            zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);
            s->strstart = s->w_size;
            s->insert = s->strstart;
        }
        else {
            if (s->window_size - s->strstart <= used) {
                /* Slide the window down. */
                s->strstart -= s->w_size;
                zmemcpy(s->window, s->window + s->w_size, s->strstart);
                if (s->matches < 2)
                    s->matches++;   /* add a pending slide_hash() */
                if (s->insert > s->strstart)
                    s->insert = s->strstart;
            }
            zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);
            s->strstart += used;
            s->insert += MIN(used, s->w_size - s->insert);
        }
        s->block_start = s->strstart;
    }
    if (s->high_water < s->strstart)
        s->high_water = s->strstart;

    /* If the last block was written to next_out, then done. */
    if (last)
        return finish_done;

    /* If flushing and all input has been consumed, then done. */
    if (flush != Z_NO_FLUSH && flush != Z_FINISH &&
        s->strm->avail_in == 0 && (long)s->strstart == s->block_start)
        return block_done;

    /* Fill the window with any remaining input. */
    have = s->window_size - s->strstart;
    if (s->strm->avail_in > have && s->block_start >= (long)s->w_size) {
        /* Slide the window down. */
        s->block_start -= s->w_size;
        s->strstart -= s->w_size;
        zmemcpy(s->window, s->window + s->w_size, s->strstart);
        if (s->matches < 2)
            s->matches++;           /* add a pending slide_hash() */
        have += s->w_size;          /* more space now */
        if (s->insert > s->strstart)
            s->insert = s->strstart;
    }
    if (have > s->strm->avail_in)
        have = s->strm->avail_in;
    if (have) {
        read_buf(s->strm, s->window + s->strstart, have);
        s->strstart += have;
        s->insert += MIN(have, s->w_size - s->insert);
    }
    if (s->high_water < s->strstart)
        s->high_water = s->strstart;

    /* There was not enough avail_out to write a complete worthy or flushed
     * stored block to next_out. Write a stored block to pending instead, if we
     * have enough input for a worthy block, or if flushing and there is enough
     * room for the remaining input as a stored block in the pending buffer.
     */
    have = (s->bi_valid + 42) >> 3;         /* number of header bytes */
        /* maximum stored block length that will fit in pending: */
    have = MIN(s->pending_buf_size - have, MAX_STORED);
    min_block = MIN(have, s->w_size);
    left = s->strstart - s->block_start;
    if (left >= min_block ||
        ((left || flush == Z_FINISH) && flush != Z_NO_FLUSH &&
         s->strm->avail_in == 0 && left <= have)) {
        len = MIN(left, have);
        last = flush == Z_FINISH && s->strm->avail_in == 0 &&
               len == left ? 1 : 0;
        _tr_stored_block(s, (charf *)s->window + s->block_start, len, last);
        s->block_start += len;
        flush_pending(s->strm);
    }

    /* We've done all we can with the available input and output. */
    return last ? finish_started : need_more;
}

/* ===========================================================================
 * Compress as much as possible from the input stream, return the current
 * block state.
 * This function does not perform lazy evaluation of matches and inserts
 * new strings in the dictionary only for unmatched strings or for short
 * matches. It is used only for the fast compression options.
 */
local block_state deflate_fast(deflate_state *s, int flush) {
    IPos hash_head;       /* head of the hash chain */
    int bflush;           /* set if current block must be flushed */

    for (;;) {
        /* Make sure that we always have enough lookahead, except
         * at the end of the input file. We need MAX_MATCH bytes
         * for the next match, plus MIN_MATCH bytes to insert the
         * string following the next match.
         */
        if (s->lookahead < MIN_LOOKAHEAD) {
            fill_window(s);
            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
                return need_more;
            }
            if (s->lookahead == 0) break; /* flush the current block */
        }

        /* Insert the string window[strstart .. strstart + 2] in the
         * dictionary, and set hash_head to the head of the hash chain:
         */
        hash_head = NIL;
        if (s->lookahead >= MIN_MATCH) {
            INSERT_STRING(s, s->strstart, hash_head);
        }

        /* Find the longest match, discarding those <= prev_length.
         * At this point we have always match_length < MIN_MATCH
         */
        if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
            /* To simplify the code, we prevent matches with the string
             * of window index 0 (in particular we have to avoid a match
             * of the string with itself at the start of the input file).
             */
            s->match_length = longest_match (s, hash_head);
            /* longest_match() sets match_start */
        }
        if (s->match_length >= MIN_MATCH) {
            check_match(s, s->strstart, s->match_start, s->match_length);

            _tr_tally_dist(s, s->strstart - s->match_start,
                           s->match_length - MIN_MATCH, bflush);

            s->lookahead -= s->match_length;

            /* Insert new strings in the hash table only if the match length
             * is not too large. This saves time but degrades compression.
             */
#ifndef FASTEST
            if (s->match_length <= s->max_insert_length &&
                s->lookahead >= MIN_MATCH) {
                s->match_length--; /* string at strstart already in table */
                do {
                    s->strstart++;
                    INSERT_STRING(s, s->strstart, hash_head);
                    /* strstart never exceeds WSIZE-MAX_MATCH, so there are
                     * always MIN_MATCH bytes ahead.
                     */
                } while (--s->match_length != 0);
                s->strstart++;
            } else
#endif
            {
                s->strstart += s->match_length;
                s->match_length = 0;
                s->ins_h = s->window[s->strstart];
                UPDATE_HASH(s, s->ins_h, s->window[s->strstart + 1]);
#if MIN_MATCH != 3
                Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
                /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
                 * matter since it will be recomputed at next deflate call.
                 */
            }
        } else {
            /* No match, output a literal byte */
            Tracevv((stderr,"%c", s->window[s->strstart]));
            _tr_tally_lit(s, s->window[s->strstart], bflush);
            s->lookahead--;
            s->strstart++;
        }
        if (bflush) FLUSH_BLOCK(s, 0);
    }
    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
    if (flush == Z_FINISH) {
        FLUSH_BLOCK(s, 1);
        return finish_done;
    }
    if (s->sym_next)
        FLUSH_BLOCK(s, 0);
    return block_done;
}

#ifndef FASTEST
/* ===========================================================================
 * Same as above, but achieves better compression. We use a lazy
 * evaluation for matches: a match is finally adopted only if there is
 * no better match at the next window position.
 */
local block_state deflate_slow(deflate_state *s, int flush) {
    IPos hash_head;          /* head of hash chain */
    int bflush;              /* set if current block must be flushed */

    /* Process the input block. */
    for (;;) {
        /* Make sure that we always have enough lookahead, except
         * at the end of the input file. We need MAX_MATCH bytes
         * for the next match, plus MIN_MATCH bytes to insert the
         * string following the next match.
         */
        if (s->lookahead < MIN_LOOKAHEAD) {
            fill_window(s);
            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
                return need_more;
            }
            if (s->lookahead == 0) break; /* flush the current block */
        }

        /* Insert the string window[strstart .. strstart + 2] in the
         * dictionary, and set hash_head to the head of the hash chain:
         */
        hash_head = NIL;
        if (s->lookahead >= MIN_MATCH) {
            INSERT_STRING(s, s->strstart, hash_head);
        }

        /* Find the longest match, discarding those <= prev_length.
         */
        s->prev_length = s->match_length, s->prev_match = s->match_start;
        s->match_length = MIN_MATCH-1;

        if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
            s->strstart - hash_head <= MAX_DIST(s)) {
            /* To simplify the code, we prevent matches with the string
             * of window index 0 (in particular we have to avoid a match
             * of the string with itself at the start of the input file).
             */
            s->match_length = longest_match (s, hash_head);
            /* longest_match() sets match_start */

            if (s->match_length <= 5 && (s->strategy == Z_FILTERED
#if TOO_FAR <= 32767
                || (s->match_length == MIN_MATCH &&
                    s->strstart - s->match_start > TOO_FAR)
#endif
                )) {

                /* If prev_match is also MIN_MATCH, match_start is garbage
                 * but we will ignore the current match anyway.
                 */
                s->match_length = MIN_MATCH-1;
            }
        }
        /* If there was a match at the previous step and the current
         * match is not better, output the previous match:
         */
        if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
            uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
            /* Do not insert strings in hash table beyond this. */

            check_match(s, s->strstart - 1, s->prev_match, s->prev_length);

            _tr_tally_dist(s, s->strstart - 1 - s->prev_match,
                           s->prev_length - MIN_MATCH, bflush);

            /* Insert in hash table all strings up to the end of the match.
             * strstart - 1 and strstart are already inserted. If there is not
             * enough lookahead, the last two strings are not inserted in
             * the hash table.
             */
            s->lookahead -= s->prev_length - 1;
            s->prev_length -= 2;
            do {
                if (++s->strstart <= max_insert) {
                    INSERT_STRING(s, s->strstart, hash_head);
                }
            } while (--s->prev_length != 0);
            s->match_available = 0;
            s->match_length = MIN_MATCH-1;
            s->strstart++;

            if (bflush) FLUSH_BLOCK(s, 0);

        } else if (s->match_available) {
            /* If there was no match at the previous position, output a
             * single literal. If there was a match but the current match
             * is longer, truncate the previous match to a single literal.
             */
            Tracevv((stderr,"%c", s->window[s->strstart - 1]));
            _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
            if (bflush) {
                FLUSH_BLOCK_ONLY(s, 0);
            }
            s->strstart++;
            s->lookahead--;
            if (s->strm->avail_out == 0) return need_more;
        } else {
            /* There is no previous match to compare with, wait for
             * the next step to decide.
             */
            s->match_available = 1;
            s->strstart++;
            s->lookahead--;
        }
    }
    Assert (flush != Z_NO_FLUSH, "no flush?");
    if (s->match_available) {
        Tracevv((stderr,"%c", s->window[s->strstart - 1]));
        _tr_tally_lit(s, s->window[s->strstart - 1], bflush);
        s->match_available = 0;
    }
    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
    if (flush == Z_FINISH) {
        FLUSH_BLOCK(s, 1);
        return finish_done;
    }
    if (s->sym_next)
        FLUSH_BLOCK(s, 0);
    return block_done;
}
#endif /* FASTEST */

/* ===========================================================================
 * For Z_RLE, simply look for runs of bytes, generate matches only of distance
 * one.  Do not maintain a hash table.  (It will be regenerated if this run of
 * deflate switches away from Z_RLE.)
 */
local block_state deflate_rle(deflate_state *s, int flush) {
    int bflush;             /* set if current block must be flushed */
    uInt prev;              /* byte at distance one to match */
    Bytef *scan, *strend;   /* scan goes up to strend for length of run */

    for (;;) {
        /* Make sure that we always have enough lookahead, except
         * at the end of the input file. We need MAX_MATCH bytes
         * for the longest run, plus one for the unrolled loop.
         */
        if (s->lookahead <= MAX_MATCH) {
            fill_window(s);
            if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) {
                return need_more;
            }
            if (s->lookahead == 0) break; /* flush the current block */
        }

        /* See how many times the previous byte repeats */
        s->match_length = 0;
        if (s->lookahead >= MIN_MATCH && s->strstart > 0) {
            scan = s->window + s->strstart - 1;
            prev = *scan;
            if (prev == *++scan && prev == *++scan && prev == *++scan) {
                strend = s->window + s->strstart + MAX_MATCH;
                do {
                } while (prev == *++scan && prev == *++scan &&
                         prev == *++scan && prev == *++scan &&
                         prev == *++scan && prev == *++scan &&
                         prev == *++scan && prev == *++scan &&
                         scan < strend);
                s->match_length = MAX_MATCH - (uInt)(strend - scan);
                if (s->match_length > s->lookahead)
                    s->match_length = s->lookahead;
            }
            Assert(scan <= s->window + (uInt)(s->window_size - 1),
                   "wild scan");
        }

        /* Emit match if have run of MIN_MATCH or longer, else emit literal */
        if (s->match_length >= MIN_MATCH) {
            check_match(s, s->strstart, s->strstart - 1, s->match_length);

            _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush);

            s->lookahead -= s->match_length;
            s->strstart += s->match_length;
            s->match_length = 0;
        } else {
            /* No match, output a literal byte */
            Tracevv((stderr,"%c", s->window[s->strstart]));
            _tr_tally_lit(s, s->window[s->strstart], bflush);
            s->lookahead--;
            s->strstart++;
        }
        if (bflush) FLUSH_BLOCK(s, 0);
    }
    s->insert = 0;
    if (flush == Z_FINISH) {
        FLUSH_BLOCK(s, 1);
        return finish_done;
    }
    if (s->sym_next)
        FLUSH_BLOCK(s, 0);
    return block_done;
}

/* ===========================================================================
 * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
 * (It will be regenerated if this run of deflate switches away from Huffman.)
 */
local block_state deflate_huff(deflate_state *s, int flush) {
    int bflush;             /* set if current block must be flushed */

    for (;;) {
        /* Make sure that we have a literal to write. */
        if (s->lookahead == 0) {
            fill_window(s);
            if (s->lookahead == 0) {
                if (flush == Z_NO_FLUSH)
                    return need_more;
                break;      /* flush the current block */
            }
        }

        /* Output a literal byte */
        s->match_length = 0;
        Tracevv((stderr,"%c", s->window[s->strstart]));
        _tr_tally_lit(s, s->window[s->strstart], bflush);
        s->lookahead--;
        s->strstart++;
        if (bflush) FLUSH_BLOCK(s, 0);
    }
    s->insert = 0;
    if (flush == Z_FINISH) {
        FLUSH_BLOCK(s, 1);
        return finish_done;
    }
    if (s->sym_next)
        FLUSH_BLOCK(s, 0);
    return block_done;
}
Added compat/zlib/deflate.h.

























































































































































































































































































































































































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/* deflate.h -- internal compression state
 * Copyright (C) 1995-2024 Jean-loup Gailly
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* @(#) $Id$ */

#ifndef DEFLATE_H
#define DEFLATE_H

#include "zutil.h"

/* define NO_GZIP when compiling if you want to disable gzip header and
   trailer creation by deflate().  NO_GZIP would be used to avoid linking in
   the crc code when it is not needed.  For shared libraries, gzip encoding
   should be left enabled. */
#ifndef NO_GZIP
#  define GZIP
#endif

/* define LIT_MEM to slightly increase the speed of deflate (order 1% to 2%) at
   the cost of a larger memory footprint */
/* #define LIT_MEM */

/* ===========================================================================
 * Internal compression state.
 */

#define LENGTH_CODES 29
/* number of length codes, not counting the special END_BLOCK code */

#define LITERALS  256
/* number of literal bytes 0..255 */

#define L_CODES (LITERALS+1+LENGTH_CODES)
/* number of Literal or Length codes, including the END_BLOCK code */

#define D_CODES   30
/* number of distance codes */

#define BL_CODES  19
/* number of codes used to transfer the bit lengths */

#define HEAP_SIZE (2*L_CODES+1)
/* maximum heap size */

#define MAX_BITS 15
/* All codes must not exceed MAX_BITS bits */

#define Buf_size 16
/* size of bit buffer in bi_buf */

#define INIT_STATE    42    /* zlib header -> BUSY_STATE */
#ifdef GZIP
#  define GZIP_STATE  57    /* gzip header -> BUSY_STATE | EXTRA_STATE */
#endif
#define EXTRA_STATE   69    /* gzip extra block -> NAME_STATE */
#define NAME_STATE    73    /* gzip file name -> COMMENT_STATE */
#define COMMENT_STATE 91    /* gzip comment -> HCRC_STATE */
#define HCRC_STATE   103    /* gzip header CRC -> BUSY_STATE */
#define BUSY_STATE   113    /* deflate -> FINISH_STATE */
#define FINISH_STATE 666    /* stream complete */
/* Stream status */


/* Data structure describing a single value and its code string. */
typedef struct ct_data_s {
    union {
        ush  freq;       /* frequency count */
        ush  code;       /* bit string */
    } fc;
    union {
        ush  dad;        /* father node in Huffman tree */
        ush  len;        /* length of bit string */
    } dl;
} FAR ct_data;

#define Freq fc.freq
#define Code fc.code
#define Dad  dl.dad
#define Len  dl.len

typedef struct static_tree_desc_s  static_tree_desc;

typedef struct tree_desc_s {
    ct_data *dyn_tree;           /* the dynamic tree */
    int     max_code;            /* largest code with non zero frequency */
    const static_tree_desc *stat_desc;  /* the corresponding static tree */
} FAR tree_desc;

typedef ush Pos;
typedef Pos FAR Posf;
typedef unsigned IPos;

/* A Pos is an index in the character window. We use short instead of int to
 * save space in the various tables. IPos is used only for parameter passing.
 */

typedef struct internal_state {
    z_streamp strm;      /* pointer back to this zlib stream */
    int   status;        /* as the name implies */
    Bytef *pending_buf;  /* output still pending */
    ulg   pending_buf_size; /* size of pending_buf */
    Bytef *pending_out;  /* next pending byte to output to the stream */
    ulg   pending;       /* nb of bytes in the pending buffer */
    int   wrap;          /* bit 0 true for zlib, bit 1 true for gzip */
    gz_headerp  gzhead;  /* gzip header information to write */
    ulg   gzindex;       /* where in extra, name, or comment */
    Byte  method;        /* can only be DEFLATED */
    int   last_flush;    /* value of flush param for previous deflate call */

                /* used by deflate.c: */

    uInt  w_size;        /* LZ77 window size (32K by default) */
    uInt  w_bits;        /* log2(w_size)  (8..16) */
    uInt  w_mask;        /* w_size - 1 */

    Bytef *window;
    /* Sliding window. Input bytes are read into the second half of the window,
     * and move to the first half later to keep a dictionary of at least wSize
     * bytes. With this organization, matches are limited to a distance of
     * wSize-MAX_MATCH bytes, but this ensures that IO is always
     * performed with a length multiple of the block size. Also, it limits
     * the window size to 64K, which is quite useful on MSDOS.
     * To do: use the user input buffer as sliding window.
     */

    ulg window_size;
    /* Actual size of window: 2*wSize, except when the user input buffer
     * is directly used as sliding window.
     */

    Posf *prev;
    /* Link to older string with same hash index. To limit the size of this
     * array to 64K, this link is maintained only for the last 32K strings.
     * An index in this array is thus a window index modulo 32K.
     */

    Posf *head; /* Heads of the hash chains or NIL. */

    uInt  ins_h;          /* hash index of string to be inserted */
    uInt  hash_size;      /* number of elements in hash table */
    uInt  hash_bits;      /* log2(hash_size) */
    uInt  hash_mask;      /* hash_size-1 */

    uInt  hash_shift;
    /* Number of bits by which ins_h must be shifted at each input
     * step. It must be such that after MIN_MATCH steps, the oldest
     * byte no longer takes part in the hash key, that is:
     *   hash_shift * MIN_MATCH >= hash_bits
     */

    long block_start;
    /* Window position at the beginning of the current output block. Gets
     * negative when the window is moved backwards.
     */

    uInt match_length;           /* length of best match */
    IPos prev_match;             /* previous match */
    int match_available;         /* set if previous match exists */
    uInt strstart;               /* start of string to insert */
    uInt match_start;            /* start of matching string */
    uInt lookahead;              /* number of valid bytes ahead in window */

    uInt prev_length;
    /* Length of the best match at previous step. Matches not greater than this
     * are discarded. This is used in the lazy match evaluation.
     */

    uInt max_chain_length;
    /* To speed up deflation, hash chains are never searched beyond this
     * length.  A higher limit improves compression ratio but degrades the
     * speed.
     */

    uInt max_lazy_match;
    /* Attempt to find a better match only when the current match is strictly
     * smaller than this value. This mechanism is used only for compression
     * levels >= 4.
     */
#   define max_insert_length  max_lazy_match
    /* Insert new strings in the hash table only if the match length is not
     * greater than this length. This saves time but degrades compression.
     * max_insert_length is used only for compression levels <= 3.
     */

    int level;    /* compression level (1..9) */
    int strategy; /* favor or force Huffman coding*/

    uInt good_match;
    /* Use a faster search when the previous match is longer than this */

    int nice_match; /* Stop searching when current match exceeds this */

                /* used by trees.c: */
    /* Didn't use ct_data typedef below to suppress compiler warning */
    struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
    struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
    struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */

    struct tree_desc_s l_desc;               /* desc. for literal tree */
    struct tree_desc_s d_desc;               /* desc. for distance tree */
    struct tree_desc_s bl_desc;              /* desc. for bit length tree */

    ush bl_count[MAX_BITS+1];
    /* number of codes at each bit length for an optimal tree */

    int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
    int heap_len;               /* number of elements in the heap */
    int heap_max;               /* element of largest frequency */
    /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
     * The same heap array is used to build all trees.
     */

    uch depth[2*L_CODES+1];
    /* Depth of each subtree used as tie breaker for trees of equal frequency
     */

#ifdef LIT_MEM
#   define LIT_BUFS 5
    ushf *d_buf;          /* buffer for distances */
    uchf *l_buf;          /* buffer for literals/lengths */
#else
#   define LIT_BUFS 4
    uchf *sym_buf;        /* buffer for distances and literals/lengths */
#endif

    uInt  lit_bufsize;
    /* Size of match buffer for literals/lengths.  There are 4 reasons for
     * limiting lit_bufsize to 64K:
     *   - frequencies can be kept in 16 bit counters
     *   - if compression is not successful for the first block, all input
     *     data is still in the window so we can still emit a stored block even
     *     when input comes from standard input.  (This can also be done for
     *     all blocks if lit_bufsize is not greater than 32K.)
     *   - if compression is not successful for a file smaller than 64K, we can
     *     even emit a stored file instead of a stored block (saving 5 bytes).
     *     This is applicable only for zip (not gzip or zlib).
     *   - creating new Huffman trees less frequently may not provide fast
     *     adaptation to changes in the input data statistics. (Take for
     *     example a binary file with poorly compressible code followed by
     *     a highly compressible string table.) Smaller buffer sizes give
     *     fast adaptation but have of course the overhead of transmitting
     *     trees more frequently.
     *   - I can't count above 4
     */

    uInt sym_next;      /* running index in symbol buffer */
    uInt sym_end;       /* symbol table full when sym_next reaches this */

    ulg opt_len;        /* bit length of current block with optimal trees */
    ulg static_len;     /* bit length of current block with static trees */
    uInt matches;       /* number of string matches in current block */
    uInt insert;        /* bytes at end of window left to insert */

#ifdef ZLIB_DEBUG
    ulg compressed_len; /* total bit length of compressed file mod 2^32 */
    ulg bits_sent;      /* bit length of compressed data sent mod 2^32 */
#endif

    ush bi_buf;
    /* Output buffer. bits are inserted starting at the bottom (least
     * significant bits).
     */
    int bi_valid;
    /* Number of valid bits in bi_buf.  All bits above the last valid bit
     * are always zero.
     */

    ulg high_water;
    /* High water mark offset in window for initialized bytes -- bytes above
     * this are set to zero in order to avoid memory check warnings when
     * longest match routines access bytes past the input.  This is then
     * updated to the new high water mark.
     */

} FAR deflate_state;

/* Output a byte on the stream.
 * IN assertion: there is enough room in pending_buf.
 */
#define put_byte(s, c) {s->pending_buf[s->pending++] = (Bytef)(c);}


#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
/* Minimum amount of lookahead, except at the end of the input file.
 * See deflate.c for comments about the MIN_MATCH+1.
 */

#define MAX_DIST(s)  ((s)->w_size-MIN_LOOKAHEAD)
/* In order to simplify the code, particularly on 16 bit machines, match
 * distances are limited to MAX_DIST instead of WSIZE.
 */

#define WIN_INIT MAX_MATCH
/* Number of bytes after end of data in window to initialize in order to avoid
   memory checker errors from longest match routines */

        /* in trees.c */
void ZLIB_INTERNAL _tr_init(deflate_state *s);
int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc);
void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
                                   ulg stored_len, int last);
void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s);
void ZLIB_INTERNAL _tr_align(deflate_state *s);
void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
                                    ulg stored_len, int last);

#define d_code(dist) \
   ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
/* Mapping from a distance to a distance code. dist is the distance - 1 and
 * must not have side effects. _dist_code[256] and _dist_code[257] are never
 * used.
 */

#ifndef ZLIB_DEBUG
/* Inline versions of _tr_tally for speed: */

#if defined(GEN_TREES_H) || !defined(STDC)
  extern uch ZLIB_INTERNAL _length_code[];
  extern uch ZLIB_INTERNAL _dist_code[];
#else
  extern const uch ZLIB_INTERNAL _length_code[];
  extern const uch ZLIB_INTERNAL _dist_code[];
#endif

#ifdef LIT_MEM
# define _tr_tally_lit(s, c, flush) \
  { uch cc = (c); \
    s->d_buf[s->sym_next] = 0; \
    s->l_buf[s->sym_next++] = cc; \
    s->dyn_ltree[cc].Freq++; \
    flush = (s->sym_next == s->sym_end); \
   }
# define _tr_tally_dist(s, distance, length, flush) \
  { uch len = (uch)(length); \
    ush dist = (ush)(distance); \
    s->d_buf[s->sym_next] = dist; \
    s->l_buf[s->sym_next++] = len; \
    dist--; \
    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
    s->dyn_dtree[d_code(dist)].Freq++; \
    flush = (s->sym_next == s->sym_end); \
  }
#else
# define _tr_tally_lit(s, c, flush) \
  { uch cc = (c); \
    s->sym_buf[s->sym_next++] = 0; \
    s->sym_buf[s->sym_next++] = 0; \
    s->sym_buf[s->sym_next++] = cc; \
    s->dyn_ltree[cc].Freq++; \
    flush = (s->sym_next == s->sym_end); \
   }
# define _tr_tally_dist(s, distance, length, flush) \
  { uch len = (uch)(length); \
    ush dist = (ush)(distance); \
    s->sym_buf[s->sym_next++] = (uch)dist; \
    s->sym_buf[s->sym_next++] = (uch)(dist >> 8); \
    s->sym_buf[s->sym_next++] = len; \
    dist--; \
    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
    s->dyn_dtree[d_code(dist)].Freq++; \
    flush = (s->sym_next == s->sym_end); \
  }
#endif
#else
# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
# define _tr_tally_dist(s, distance, length, flush) \
              flush = _tr_tally(s, distance, length)
#endif

#endif /* DEFLATE_H */
Added compat/zlib/examples/README.examples.






















































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This directory contains examples of the use of zlib and other relevant
programs and documentation.

enough.c
    calculation and justification of ENOUGH parameter in inftrees.h
    - calculates the maximum table space used in inflate tree
      construction over all possible Huffman codes

fitblk.c
    compress just enough input to nearly fill a requested output size
    - zlib isn't designed to do this, but fitblk does it anyway

gun.c
    uncompress a gzip file
    - illustrates the use of inflateBack() for high speed file-to-file
      decompression using call-back functions
    - is approximately twice as fast as gzip -d
    - also provides Unix uncompress functionality, again twice as fast

gzappend.c
    append to a gzip file
    - illustrates the use of the Z_BLOCK flush parameter for inflate()
    - illustrates the use of deflatePrime() to start at any bit

gzjoin.c
    join gzip files without recalculating the crc or recompressing
    - illustrates the use of the Z_BLOCK flush parameter for inflate()
    - illustrates the use of crc32_combine()

gzlog.c
gzlog.h
    efficiently and robustly maintain a message log file in gzip format
    - illustrates use of raw deflate, Z_PARTIAL_FLUSH, deflatePrime(),
      and deflateSetDictionary()
    - illustrates use of a gzip header extra field

gznorm.c
    normalize a gzip file by combining members into a single member
    - demonstrates how to concatenate deflate streams using Z_BLOCK

zlib_how.html
    painfully comprehensive description of zpipe.c (see below)
    - describes in excruciating detail the use of deflate() and inflate()

zpipe.c
    reads and writes zlib streams from stdin to stdout
    - illustrates the proper use of deflate() and inflate()
    - deeply commented in zlib_how.html (see above)

zran.c
zran.h
    index a zlib or gzip stream and randomly access it
    - illustrates the use of Z_BLOCK, inflatePrime(), and
      inflateSetDictionary() to provide random access
Added compat/zlib/examples/enough.c.





















































































































































































































































































































































































































































































































































































































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/* enough.c -- determine the maximum size of inflate's Huffman code tables over
 * all possible valid and complete prefix codes, subject to a length limit.
 * Copyright (C) 2007, 2008, 2012, 2018 Mark Adler
 * Version 1.5  5 August 2018  Mark Adler
 */

/* Version history:
   1.0   3 Jan 2007  First version (derived from codecount.c version 1.4)
   1.1   4 Jan 2007  Use faster incremental table usage computation
                     Prune examine() search on previously visited states
   1.2   5 Jan 2007  Comments clean up
                     As inflate does, decrease root for short codes
                     Refuse cases where inflate would increase root
   1.3  17 Feb 2008  Add argument for initial root table size
                     Fix bug for initial root table size == max - 1
                     Use a macro to compute the history index
   1.4  18 Aug 2012  Avoid shifts more than bits in type (caused endless loop!)
                     Clean up comparisons of different types
                     Clean up code indentation
   1.5   5 Aug 2018  Clean up code style, formatting, and comments
                     Show all the codes for the maximum, and only the maximum
 */

/*
   Examine all possible prefix codes for a given number of symbols and a
   maximum code length in bits to determine the maximum table size for zlib's
   inflate. Only complete prefix codes are counted.

   Two codes are considered distinct if the vectors of the number of codes per
   length are not identical. So permutations of the symbol assignments result
   in the same code for the counting, as do permutations of the assignments of
   the bit values to the codes (i.e. only canonical codes are counted).

   We build a code from shorter to longer lengths, determining how many symbols
   are coded at each length. At each step, we have how many symbols remain to
   be coded, what the last code length used was, and how many bit patterns of
   that length remain unused. Then we add one to the code length and double the
   number of unused patterns to graduate to the next code length. We then
   assign all portions of the remaining symbols to that code length that
   preserve the properties of a correct and eventually complete code. Those
   properties are: we cannot use more bit patterns than are available; and when
   all the symbols are used, there are exactly zero possible bit patterns left
   unused.

   The inflate Huffman decoding algorithm uses two-level lookup tables for
   speed. There is a single first-level table to decode codes up to root bits
   in length (root == 9 for literal/length codes and root == 6 for distance
   codes, in the current inflate implementation). The base table has 1 << root
   entries and is indexed by the next root bits of input. Codes shorter than
   root bits have replicated table entries, so that the correct entry is
   pointed to regardless of the bits that follow the short code. If the code is
   longer than root bits, then the table entry points to a second-level table.
   The size of that table is determined by the longest code with that root-bit
   prefix. If that longest code has length len, then the table has size 1 <<
   (len - root), to index the remaining bits in that set of codes. Each
   subsequent root-bit prefix then has its own sub-table. The total number of
   table entries required by the code is calculated incrementally as the number
   of codes at each bit length is populated. When all of the codes are shorter
   than root bits, then root is reduced to the longest code length, resulting
   in a single, smaller, one-level table.

   The inflate algorithm also provides for small values of root (relative to
   the log2 of the number of symbols), where the shortest code has more bits
   than root. In that case, root is increased to the length of the shortest
   code. This program, by design, does not handle that case, so it is verified
   that the number of symbols is less than 1 << (root + 1).

   In order to speed up the examination (by about ten orders of magnitude for
   the default arguments), the intermediate states in the build-up of a code
   are remembered and previously visited branches are pruned. The memory
   required for this will increase rapidly with the total number of symbols and
   the maximum code length in bits. However this is a very small price to pay
   for the vast speedup.

   First, all of the possible prefix codes are counted, and reachable
   intermediate states are noted by a non-zero count in a saved-results array.
   Second, the intermediate states that lead to (root + 1) bit or longer codes
   are used to look at all sub-codes from those junctures for their inflate
   memory usage. (The amount of memory used is not affected by the number of
   codes of root bits or less in length.)  Third, the visited states in the
   construction of those sub-codes and the associated calculation of the table
   size is recalled in order to avoid recalculating from the same juncture.
   Beginning the code examination at (root + 1) bit codes, which is enabled by
   identifying the reachable nodes, accounts for about six of the orders of
   magnitude of improvement for the default arguments. About another four
   orders of magnitude come from not revisiting previous states. Out of
   approximately 2x10^16 possible prefix codes, only about 2x10^6 sub-codes
   need to be examined to cover all of the possible table memory usage cases
   for the default arguments of 286 symbols limited to 15-bit codes.

   Note that the uintmax_t type is used for counting. It is quite easy to
   exceed the capacity of an eight-byte integer with a large number of symbols
   and a large maximum code length, so multiple-precision arithmetic would need
   to replace the integer arithmetic in that case. This program will abort if
   an overflow occurs. The big_t type identifies where the counting takes
   place.

   The uintmax_t type is also used for calculating the number of possible codes
   remaining at the maximum length. This limits the maximum code length to the
   number of bits in a long long minus the number of bits needed to represent
   the symbols in a flat code. The code_t type identifies where the bit-pattern
   counting takes place.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdint.h>
#include <assert.h>

#define local static

// Special data types.
typedef uintmax_t big_t;    // type for code counting
#define PRIbig "ju"         // printf format for big_t
typedef uintmax_t code_t;   // type for bit pattern counting
struct tab {                // type for been-here check
    size_t len;             // allocated length of bit vector in octets
    char *vec;              // allocated bit vector
};

/* The array for saving results, num[], is indexed with this triplet:

      syms: number of symbols remaining to code
      left: number of available bit patterns at length len
      len: number of bits in the codes currently being assigned

   Those indices are constrained thusly when saving results:

      syms: 3..totsym (totsym == total symbols to code)
      left: 2..syms - 1, but only the evens (so syms == 8 -> 2, 4, 6)
      len: 1..max - 1 (max == maximum code length in bits)

   syms == 2 is not saved since that immediately leads to a single code. left
   must be even, since it represents the number of available bit patterns at
   the current length, which is double the number at the previous length. left
   ends at syms-1 since left == syms immediately results in a single code.
   (left > sym is not allowed since that would result in an incomplete code.)
   len is less than max, since the code completes immediately when len == max.

   The offset into the array is calculated for the three indices with the first
   one (syms) being outermost, and the last one (len) being innermost. We build
   the array with length max-1 lists for the len index, with syms-3 of those
   for each symbol. There are totsym-2 of those, with each one varying in
   length as a function of sym. See the calculation of index in map() for the
   index, and the calculation of size in main() for the size of the array.

   For the deflate example of 286 symbols limited to 15-bit codes, the array
   has 284,284 entries, taking up 2.17 MB for an 8-byte big_t. More than half
   of the space allocated for saved results is actually used -- not all
   possible triplets are reached in the generation of valid prefix codes.
 */

/* The array for tracking visited states, done[], is itself indexed identically
   to the num[] array as described above for the (syms, left, len) triplet.
   Each element in the array is further indexed by the (mem, rem) doublet,
   where mem is the amount of inflate table space used so far, and rem is the
   remaining unused entries in the current inflate sub-table. Each indexed
   element is simply one bit indicating whether the state has been visited or
   not. Since the ranges for mem and rem are not known a priori, each bit
   vector is of a variable size, and grows as needed to accommodate the visited
   states. mem and rem are used to calculate a single index in a triangular
   array. Since the range of mem is expected in the default case to be about
   ten times larger than the range of rem, the array is skewed to reduce the
   memory usage, with eight times the range for mem than for rem. See the
   calculations for offset and bit in been_here() for the details.

   For the deflate example of 286 symbols limited to 15-bit codes, the bit
   vectors grow to total 5.5 MB, in addition to the 4.3 MB done array itself.
 */

// Type for a variable-length, allocated string.
typedef struct {
    char *str;          // pointer to allocated string
    size_t size;        // size of allocation
    size_t len;         // length of string, not including terminating zero
} string_t;

// Clear a string_t.
local void string_clear(string_t *s) {
    s->str[0] = 0;
    s->len = 0;
}

// Initialize a string_t.
local void string_init(string_t *s) {
    s->size = 16;
    s->str = malloc(s->size);
    assert(s->str != NULL && "out of memory");
    string_clear(s);
}

// Release the allocation of a string_t.
local void string_free(string_t *s) {
    free(s->str);
    s->str = NULL;
    s->size = 0;
    s->len = 0;
}

// Save the results of printf with fmt and the subsequent argument list to s.
// Each call appends to s. The allocated space for s is increased as needed.
local void string_printf(string_t *s, char *fmt, ...) {
    va_list ap;
    va_start(ap, fmt);
    size_t len = s->len;
    int ret = vsnprintf(s->str + len, s->size - len, fmt, ap);
    assert(ret >= 0 && "out of memory");
    s->len += ret;
    if (s->size < s->len + 1) {
        do {
            s->size <<= 1;
            assert(s->size != 0 && "overflow");
        } while (s->size < s->len + 1);
        s->str = realloc(s->str, s->size);
        assert(s->str != NULL && "out of memory");
        vsnprintf(s->str + len, s->size - len, fmt, ap);
    }
    va_end(ap);
}

// Globals to avoid propagating constants or constant pointers recursively.
struct {
    int max;            // maximum allowed bit length for the codes
    int root;           // size of base code table in bits
    int large;          // largest code table so far
    size_t size;        // number of elements in num and done
    big_t tot;          // total number of codes with maximum tables size
    string_t out;       // display of subcodes for maximum tables size
    int *code;          // number of symbols assigned to each bit length
    big_t *num;         // saved results array for code counting
    struct tab *done;   // states already evaluated array
} g;

// Index function for num[] and done[].
local inline size_t map(int syms, int left, int len) {
    return ((size_t)((syms - 1) >> 1) * ((syms - 2) >> 1) +
            (left >> 1) - 1) * (g.max - 1) +
           len - 1;
}

// Free allocated space in globals.
local void cleanup(void) {
    if (g.done != NULL) {
        for (size_t n = 0; n < g.size; n++)
            if (g.done[n].len)
                free(g.done[n].vec);
        g.size = 0;
        free(g.done);   g.done = NULL;
    }
    free(g.num);    g.num = NULL;
    free(g.code);   g.code = NULL;
    string_free(&g.out);
}

// Return the number of possible prefix codes using bit patterns of lengths len
// through max inclusive, coding syms symbols, with left bit patterns of length
// len unused -- return -1 if there is an overflow in the counting. Keep a
// record of previous results in num to prevent repeating the same calculation.
local big_t count(int syms, int left, int len) {
    // see if only one possible code
    if (syms == left)
        return 1;

    // note and verify the expected state
    assert(syms > left && left > 0 && len < g.max);

    // see if we've done this one already
    size_t index = map(syms, left, len);
    big_t got = g.num[index];
    if (got)
        return got;         // we have -- return the saved result

    // we need to use at least this many bit patterns so that the code won't be
    // incomplete at the next length (more bit patterns than symbols)
    int least = (left << 1) - syms;
    if (least < 0)
        least = 0;

    // we can use at most this many bit patterns, lest there not be enough
    // available for the remaining symbols at the maximum length (if there were
    // no limit to the code length, this would become: most = left - 1)
    int most = (((code_t)left << (g.max - len)) - syms) /
               (((code_t)1 << (g.max - len)) - 1);

    // count all possible codes from this juncture and add them up
    big_t sum = 0;
    for (int use = least; use <= most; use++) {
        got = count(syms - use, (left - use) << 1, len + 1);
        sum += got;
        if (got == (big_t)-1 || sum < got)      // overflow
            return (big_t)-1;
    }

    // verify that all recursive calls are productive
    assert(sum != 0);

    // save the result and return it
    g.num[index] = sum;
    return sum;
}

// Return true if we've been here before, set to true if not. Set a bit in a
// bit vector to indicate visiting this state. Each (syms,len,left) state has a
// variable size bit vector indexed by (mem,rem). The bit vector is lengthened
// as needed to allow setting the (mem,rem) bit.
local int been_here(int syms, int left, int len, int mem, int rem) {
    // point to vector for (syms,left,len), bit in vector for (mem,rem)
    size_t index = map(syms, left, len);
    mem -= 1 << g.root;             // mem always includes the root table
    mem >>= 1;                      // mem and rem are always even
    rem >>= 1;
    size_t offset = (mem >> 3) + rem;
    offset = ((offset * (offset + 1)) >> 1) + rem;
    int bit = 1 << (mem & 7);

    // see if we've been here
    size_t length = g.done[index].len;
    if (offset < length && (g.done[index].vec[offset] & bit) != 0)
        return 1;       // done this!

    // we haven't been here before -- set the bit to show we have now

    // see if we need to lengthen the vector in order to set the bit
    if (length <= offset) {
        // if we have one already, enlarge it, zero out the appended space
        char *vector;
        if (length) {
            do {
                length <<= 1;
            } while (length <= offset);
            vector = realloc(g.done[index].vec, length);
            assert(vector != NULL && "out of memory");
            memset(vector + g.done[index].len, 0, length - g.done[index].len);
        }

        // otherwise we need to make a new vector and zero it out
        else {
            length = 16;
            while (length <= offset)
                length <<= 1;
            vector = calloc(length, 1);
            assert(vector != NULL && "out of memory");
        }

        // install the new vector
        g.done[index].len = length;
        g.done[index].vec = vector;
    }

    // set the bit
    g.done[index].vec[offset] |= bit;
    return 0;
}

// Examine all possible codes from the given node (syms, len, left). Compute
// the amount of memory required to build inflate's decoding tables, where the
// number of code structures used so far is mem, and the number remaining in
// the current sub-table is rem.
local void examine(int syms, int left, int len, int mem, int rem) {
    // see if we have a complete code
    if (syms == left) {
        // set the last code entry
        g.code[len] = left;

        // complete computation of memory used by this code
        while (rem < left) {
            left -= rem;
            rem = 1 << (len - g.root);
            mem += rem;
        }
        assert(rem == left);

        // if this is at the maximum, show the sub-code
        if (mem >= g.large) {
            // if this is a new maximum, update the maximum and clear out the
            // printed sub-codes from the previous maximum
            if (mem > g.large) {
                g.large = mem;
                string_clear(&g.out);
            }

            // compute the starting state for this sub-code
            syms = 0;
            left = 1 << g.max;
            for (int bits = g.max; bits > g.root; bits--) {
                syms += g.code[bits];
                left -= g.code[bits];
                assert((left & 1) == 0);
                left >>= 1;
            }

            // print the starting state and the resulting sub-code to g.out
            string_printf(&g.out, "<%u, %u, %u>:",
                          syms, g.root + 1, ((1 << g.root) - left) << 1);
            for (int bits = g.root + 1; bits <= g.max; bits++)
                if (g.code[bits])
                    string_printf(&g.out, " %d[%d]", g.code[bits], bits);
            string_printf(&g.out, "\n");
        }

        // remove entries as we drop back down in the recursion
        g.code[len] = 0;
        return;
    }

    // prune the tree if we can
    if (been_here(syms, left, len, mem, rem))
        return;

    // we need to use at least this many bit patterns so that the code won't be
    // incomplete at the next length (more bit patterns than symbols)
    int least = (left << 1) - syms;
    if (least < 0)
        least = 0;

    // we can use at most this many bit patterns, lest there not be enough
    // available for the remaining symbols at the maximum length (if there were
    // no limit to the code length, this would become: most = left - 1)
    int most = (((code_t)left << (g.max - len)) - syms) /
               (((code_t)1 << (g.max - len)) - 1);

    // occupy least table spaces, creating new sub-tables as needed
    int use = least;
    while (rem < use) {
        use -= rem;
        rem = 1 << (len - g.root);
        mem += rem;
    }
    rem -= use;

    // examine codes from here, updating table space as we go
    for (use = least; use <= most; use++) {
        g.code[len] = use;
        examine(syms - use, (left - use) << 1, len + 1,
                mem + (rem ? 1 << (len - g.root) : 0), rem << 1);
        if (rem == 0) {
            rem = 1 << (len - g.root);
            mem += rem;
        }
        rem--;
    }

    // remove entries as we drop back down in the recursion
    g.code[len] = 0;
}

// Look at all sub-codes starting with root + 1 bits. Look at only the valid
// intermediate code states (syms, left, len). For each completed code,
// calculate the amount of memory required by inflate to build the decoding
// tables. Find the maximum amount of memory required and show the codes that
// require that maximum.
local void enough(int syms) {
    // clear code
    for (int n = 0; n <= g.max; n++)
        g.code[n] = 0;

    // look at all (root + 1) bit and longer codes
    string_clear(&g.out);           // empty saved results
    g.large = 1 << g.root;          // base table
    if (g.root < g.max)             // otherwise, there's only a base table
        for (int n = 3; n <= syms; n++)
            for (int left = 2; left < n; left += 2) {
                // look at all reachable (root + 1) bit nodes, and the
                // resulting codes (complete at root + 2 or more)
                size_t index = map(n, left, g.root + 1);
                if (g.root + 1 < g.max && g.num[index]) // reachable node
                    examine(n, left, g.root + 1, 1 << g.root, 0);

                // also look at root bit codes with completions at root + 1
                // bits (not saved in num, since complete), just in case
                if (g.num[index - 1] && n <= left << 1)
                    examine((n - left) << 1, (n - left) << 1, g.root + 1,
                            1 << g.root, 0);
            }

    // done
    printf("maximum of %d table entries for root = %d\n", g.large, g.root);
    fputs(g.out.str, stdout);
}

// Examine and show the total number of possible prefix codes for a given
// maximum number of symbols, initial root table size, and maximum code length
// in bits -- those are the command arguments in that order. The default values
// are 286, 9, and 15 respectively, for the deflate literal/length code. The
// possible codes are counted for each number of coded symbols from two to the
// maximum. The counts for each of those and the total number of codes are
// shown. The maximum number of inflate table entries is then calculated across
// all possible codes. Each new maximum number of table entries and the
// associated sub-code (starting at root + 1 == 10 bits) is shown.
//
// To count and examine prefix codes that are not length-limited, provide a
// maximum length equal to the number of symbols minus one.
//
// For the deflate literal/length code, use "enough". For the deflate distance
// code, use "enough 30 6".
int main(int argc, char **argv) {
    // set up globals for cleanup()
    g.code = NULL;
    g.num = NULL;
    g.done = NULL;
    string_init(&g.out);

    // get arguments -- default to the deflate literal/length code
    int syms = 286;
    g.root = 9;
    g.max = 15;
    if (argc > 1) {
        syms = atoi(argv[1]);
        if (argc > 2) {
            g.root = atoi(argv[2]);
            if (argc > 3)
                g.max = atoi(argv[3]);
        }
    }
    if (argc > 4 || syms < 2 || g.root < 1 || g.max < 1) {
        fputs("invalid arguments, need: [sym >= 2 [root >= 1 [max >= 1]]]\n",
              stderr);
        return 1;
    }

    // if not restricting the code length, the longest is syms - 1
    if (g.max > syms - 1)
        g.max = syms - 1;

    // determine the number of bits in a code_t
    int bits = 0;
    for (code_t word = 1; word; word <<= 1)
        bits++;

    // make sure that the calculation of most will not overflow
    if (g.max > bits || (code_t)(syms - 2) >= ((code_t)-1 >> (g.max - 1))) {
        fputs("abort: code length too long for internal types\n", stderr);
        return 1;
    }

    // reject impossible code requests
    if ((code_t)(syms - 1) > ((code_t)1 << g.max) - 1) {
        fprintf(stderr, "%d symbols cannot be coded in %d bits\n",
                syms, g.max);
        return 1;
    }

    // allocate code vector
    g.code = calloc(g.max + 1, sizeof(int));
    assert(g.code != NULL && "out of memory");

    // determine size of saved results array, checking for overflows,
    // allocate and clear the array (set all to zero with calloc())
    if (syms == 2)              // iff max == 1
        g.num = NULL;           // won't be saving any results
    else {
        g.size = syms >> 1;
        int n = (syms - 1) >> 1;
        assert(g.size <= (size_t)-1 / n && "overflow");
        g.size *= n;
        n = g.max - 1;
        assert(g.size <= (size_t)-1 / n && "overflow");
        g.size *= n;
        g.num = calloc(g.size, sizeof(big_t));
        assert(g.num != NULL && "out of memory");
    }

    // count possible codes for all numbers of symbols, add up counts
    big_t sum = 0;
    for (int n = 2; n <= syms; n++) {
        big_t got = count(n, 2, 1);
        sum += got;
        assert(got != (big_t)-1 && sum >= got && "overflow");
    }
    printf("%"PRIbig" total codes for 2 to %d symbols", sum, syms);
    if (g.max < syms - 1)
        printf(" (%d-bit length limit)\n", g.max);
    else
        puts(" (no length limit)");

    // allocate and clear done array for been_here()
    if (syms == 2)
        g.done = NULL;
    else {
        g.done = calloc(g.size, sizeof(struct tab));
        assert(g.done != NULL && "out of memory");
    }

    // find and show maximum inflate table usage
    if (g.root > g.max)             // reduce root to max length
        g.root = g.max;
    if ((code_t)syms < ((code_t)1 << (g.root + 1)))
        enough(syms);
    else
        fputs("cannot handle minimum code lengths > root", stderr);

    // done
    cleanup();
    return 0;
}
Added compat/zlib/examples/fitblk.c.









































































































































































































































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/* fitblk.c: example of fitting compressed output to a specified size
   Not copyrighted -- provided to the public domain
   Version 1.1  25 November 2004  Mark Adler */

/* Version history:
   1.0  24 Nov 2004  First version
   1.1  25 Nov 2004  Change deflateInit2() to deflateInit()
                     Use fixed-size, stack-allocated raw buffers
                     Simplify code moving compression to subroutines
                     Use assert() for internal errors
                     Add detailed description of approach
 */

/* Approach to just fitting a requested compressed size:

   fitblk performs three compression passes on a portion of the input
   data in order to determine how much of that input will compress to
   nearly the requested output block size.  The first pass generates
   enough deflate blocks to produce output to fill the requested
   output size plus a specified excess amount (see the EXCESS define
   below).  The last deflate block may go quite a bit past that, but
   is discarded.  The second pass decompresses and recompresses just
   the compressed data that fit in the requested plus excess sized
   buffer.  The deflate process is terminated after that amount of
   input, which is less than the amount consumed on the first pass.
   The last deflate block of the result will be of a comparable size
   to the final product, so that the header for that deflate block and
   the compression ratio for that block will be about the same as in
   the final product.  The third compression pass decompresses the
   result of the second step, but only the compressed data up to the
   requested size minus an amount to allow the compressed stream to
   complete (see the MARGIN define below).  That will result in a
   final compressed stream whose length is less than or equal to the
   requested size.  Assuming sufficient input and a requested size
   greater than a few hundred bytes, the shortfall will typically be
   less than ten bytes.

   If the input is short enough that the first compression completes
   before filling the requested output size, then that compressed
   stream is return with no recompression.

   EXCESS is chosen to be just greater than the shortfall seen in a
   two pass approach similar to the above.  That shortfall is due to
   the last deflate block compressing more efficiently with a smaller
   header on the second pass.  EXCESS is set to be large enough so
   that there is enough uncompressed data for the second pass to fill
   out the requested size, and small enough so that the final deflate
   block of the second pass will be close in size to the final deflate
   block of the third and final pass.  MARGIN is chosen to be just
   large enough to assure that the final compression has enough room
   to complete in all cases.
 */

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "zlib.h"

#define local static

/* print nastygram and leave */
local void quit(char *why)
{
    fprintf(stderr, "fitblk abort: %s\n", why);
    exit(1);
}

#define RAWLEN 4096    /* intermediate uncompressed buffer size */

/* compress from file to def until provided buffer is full or end of
   input reached; return last deflate() return value, or Z_ERRNO if
   there was read error on the file */
local int partcompress(FILE *in, z_streamp def)
{
    int ret, flush;
    unsigned char raw[RAWLEN];

    flush = Z_NO_FLUSH;
    do {
        def->avail_in = fread(raw, 1, RAWLEN, in);
        if (ferror(in))
            return Z_ERRNO;
        def->next_in = raw;
        if (feof(in))
            flush = Z_FINISH;
        ret = deflate(def, flush);
        assert(ret != Z_STREAM_ERROR);
    } while (def->avail_out != 0 && flush == Z_NO_FLUSH);
    return ret;
}

/* recompress from inf's input to def's output; the input for inf and
   the output for def are set in those structures before calling;
   return last deflate() return value, or Z_MEM_ERROR if inflate()
   was not able to allocate enough memory when it needed to */
local int recompress(z_streamp inf, z_streamp def)
{
    int ret, flush;
    unsigned char raw[RAWLEN];

    flush = Z_NO_FLUSH;
    do {
        /* decompress */
        inf->avail_out = RAWLEN;
        inf->next_out = raw;
        ret = inflate(inf, Z_NO_FLUSH);
        assert(ret != Z_STREAM_ERROR && ret != Z_DATA_ERROR &&
               ret != Z_NEED_DICT);
        if (ret == Z_MEM_ERROR)
            return ret;

        /* compress what was decompressed until done or no room */
        def->avail_in = RAWLEN - inf->avail_out;
        def->next_in = raw;
        if (inf->avail_out != 0)
            flush = Z_FINISH;
        ret = deflate(def, flush);
        assert(ret != Z_STREAM_ERROR);
    } while (ret != Z_STREAM_END && def->avail_out != 0);
    return ret;
}

#define EXCESS 256      /* empirically determined stream overage */
#define MARGIN 8        /* amount to back off for completion */

/* compress from stdin to fixed-size block on stdout */
int main(int argc, char **argv)
{
    int ret;                /* return code */
    unsigned size;          /* requested fixed output block size */
    unsigned have;          /* bytes written by deflate() call */
    unsigned char *blk;     /* intermediate and final stream */
    unsigned char *tmp;     /* close to desired size stream */
    z_stream def, inf;      /* zlib deflate and inflate states */

    /* get requested output size */
    if (argc != 2)
        quit("need one argument: size of output block");
    ret = strtol(argv[1], argv + 1, 10);
    if (argv[1][0] != 0)
        quit("argument must be a number");
    if (ret < 8)            /* 8 is minimum zlib stream size */
        quit("need positive size of 8 or greater");
    size = (unsigned)ret;

    /* allocate memory for buffers and compression engine */
    blk = malloc(size + EXCESS);
    def.zalloc = Z_NULL;
    def.zfree = Z_NULL;
    def.opaque = Z_NULL;
    ret = deflateInit(&def, Z_DEFAULT_COMPRESSION);
    if (ret != Z_OK || blk == NULL)
        quit("out of memory");

    /* compress from stdin until output full, or no more input */
    def.avail_out = size + EXCESS;
    def.next_out = blk;
    ret = partcompress(stdin, &def);
    if (ret == Z_ERRNO)
        quit("error reading input");

    /* if it all fit, then size was undersubscribed -- done! */
    if (ret == Z_STREAM_END && def.avail_out >= EXCESS) {
        /* write block to stdout */
        have = size + EXCESS - def.avail_out;
        if (fwrite(blk, 1, have, stdout) != have || ferror(stdout))
            quit("error writing output");

        /* clean up and print results to stderr */
        ret = deflateEnd(&def);
        assert(ret != Z_STREAM_ERROR);
        free(blk);
        fprintf(stderr,
                "%u bytes unused out of %u requested (all input)\n",
                size - have, size);
        return 0;
    }

    /* it didn't all fit -- set up for recompression */
    inf.zalloc = Z_NULL;
    inf.zfree = Z_NULL;
    inf.opaque = Z_NULL;
    inf.avail_in = 0;
    inf.next_in = Z_NULL;
    ret = inflateInit(&inf);
    tmp = malloc(size + EXCESS);
    if (ret != Z_OK || tmp == NULL)
        quit("out of memory");
    ret = deflateReset(&def);
    assert(ret != Z_STREAM_ERROR);

    /* do first recompression close to the right amount */
    inf.avail_in = size + EXCESS;
    inf.next_in = blk;
    def.avail_out = size + EXCESS;
    def.next_out = tmp;
    ret = recompress(&inf, &def);
    if (ret == Z_MEM_ERROR)
        quit("out of memory");

    /* set up for next recompression */
    ret = inflateReset(&inf);
    assert(ret != Z_STREAM_ERROR);
    ret = deflateReset(&def);
    assert(ret != Z_STREAM_ERROR);

    /* do second and final recompression (third compression) */
    inf.avail_in = size - MARGIN;   /* assure stream will complete */
    inf.next_in = tmp;
    def.avail_out = size;
    def.next_out = blk;
    ret = recompress(&inf, &def);
    if (ret == Z_MEM_ERROR)
        quit("out of memory");
    assert(ret == Z_STREAM_END);    /* otherwise MARGIN too small */

    /* done -- write block to stdout */
    have = size - def.avail_out;
    if (fwrite(blk, 1, have, stdout) != have || ferror(stdout))
        quit("error writing output");

    /* clean up and print results to stderr */
    free(tmp);
    ret = inflateEnd(&inf);
    assert(ret != Z_STREAM_ERROR);
    ret = deflateEnd(&def);
    assert(ret != Z_STREAM_ERROR);
    free(blk);
    fprintf(stderr,
            "%u bytes unused out of %u requested (%lu input)\n",
            size - have, size, def.total_in);
    return 0;
}
Added compat/zlib/examples/gun.c.






























































































































































































































































































































































































































































































































































































































































































































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/* gun.c -- simple gunzip to give an example of the use of inflateBack()
 * Copyright (C) 2003, 2005, 2008, 2010, 2012 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
   Version 1.7  12 August 2012  Mark Adler */

/* Version history:
   1.0  16 Feb 2003  First version for testing of inflateBack()
   1.1  21 Feb 2005  Decompress concatenated gzip streams
                     Remove use of "this" variable (C++ keyword)
                     Fix return value for in()
                     Improve allocation failure checking
                     Add typecasting for void * structures
                     Add -h option for command version and usage
                     Add a bunch of comments
   1.2  20 Mar 2005  Add Unix compress (LZW) decompression
                     Copy file attributes from input file to output file
   1.3  12 Jun 2005  Add casts for error messages [Oberhumer]
   1.4   8 Dec 2006  LZW decompression speed improvements
   1.5   9 Feb 2008  Avoid warning in latest version of gcc
   1.6  17 Jan 2010  Avoid signed/unsigned comparison warnings
   1.7  12 Aug 2012  Update for z_const usage in zlib 1.2.8
 */

/*
   gun [ -t ] [ name ... ]

   decompresses the data in the named gzip files.  If no arguments are given,
   gun will decompress from stdin to stdout.  The names must end in .gz, -gz,
   .z, -z, _z, or .Z.  The uncompressed data will be written to a file name
   with the suffix stripped.  On success, the original file is deleted.  On
   failure, the output file is deleted.  For most failures, the command will
   continue to process the remaining names on the command line.  A memory
   allocation failure will abort the command.  If -t is specified, then the
   listed files or stdin will be tested as gzip files for integrity (without
   checking for a proper suffix), no output will be written, and no files
   will be deleted.

   Like gzip, gun allows concatenated gzip streams and will decompress them,
   writing all of the uncompressed data to the output.  Unlike gzip, gun allows
   an empty file on input, and will produce no error writing an empty output
   file.

   gun will also decompress files made by Unix compress, which uses LZW
   compression.  These files are automatically detected by virtue of their
   magic header bytes.  Since the end of Unix compress stream is marked by the
   end-of-file, they cannot be concatenated.  If a Unix compress stream is
   encountered in an input file, it is the last stream in that file.

   Like gunzip and uncompress, the file attributes of the original compressed
   file are maintained in the final uncompressed file, to the extent that the
   user permissions allow it.

   On my Mac OS X PowerPC G4, gun is almost twice as fast as gunzip (version
   1.2.4) is on the same file, when gun is linked with zlib 1.2.2.  Also the
   LZW decompression provided by gun is about twice as fast as the standard
   Unix uncompress command.
 */

/* external functions and related types and constants */
#include <stdio.h>          /* fprintf() */
#include <stdlib.h>         /* malloc(), free() */
#include <string.h>         /* strerror(), strcmp(), strlen(), memcpy() */
#include <errno.h>          /* errno */
#include <fcntl.h>          /* open() */
#include <unistd.h>         /* read(), write(), close(), chown(), unlink() */
#include <sys/types.h>
#include <sys/stat.h>       /* stat(), chmod() */
#include <utime.h>          /* utime() */
#include "zlib.h"           /* inflateBackInit(), inflateBack(), */
                            /* inflateBackEnd(), crc32() */

/* function declaration */
#define local static

/* buffer constants */
#define SIZE 32768U         /* input and output buffer sizes */
#define PIECE 16384         /* limits i/o chunks for 16-bit int case */

/* structure for infback() to pass to input function in() -- it maintains the
   input file and a buffer of size SIZE */
struct ind {
    int infile;
    unsigned char *inbuf;
};

/* Load input buffer, assumed to be empty, and return bytes loaded and a
   pointer to them.  read() is called until the buffer is full, or until it
   returns end-of-file or error.  Return 0 on error. */
local unsigned in(void *in_desc, z_const unsigned char **buf)
{
    int ret;
    unsigned len;
    unsigned char *next;
    struct ind *me = (struct ind *)in_desc;

    next = me->inbuf;
    *buf = next;
    len = 0;
    do {
        ret = PIECE;
        if ((unsigned)ret > SIZE - len)
            ret = (int)(SIZE - len);
        ret = (int)read(me->infile, next, ret);
        if (ret == -1) {
            len = 0;
            break;
        }
        next += ret;
        len += ret;
    } while (ret != 0 && len < SIZE);
    return len;
}

/* structure for infback() to pass to output function out() -- it maintains the
   output file, a running CRC-32 check on the output and the total number of
   bytes output, both for checking against the gzip trailer.  (The length in
   the gzip trailer is stored modulo 2^32, so it's ok if a long is 32 bits and
   the output is greater than 4 GB.) */
struct outd {
    int outfile;
    int check;                  /* true if checking crc and total */
    unsigned long crc;
    unsigned long total;
};

/* Write output buffer and update the CRC-32 and total bytes written.  write()
   is called until all of the output is written or an error is encountered.
   On success out() returns 0.  For a write failure, out() returns 1.  If the
   output file descriptor is -1, then nothing is written.
 */
local int out(void *out_desc, unsigned char *buf, unsigned len)
{
    int ret;
    struct outd *me = (struct outd *)out_desc;

    if (me->check) {
        me->crc = crc32(me->crc, buf, len);
        me->total += len;
    }
    if (me->outfile != -1)
        do {
            ret = PIECE;
            if ((unsigned)ret > len)
                ret = (int)len;
            ret = (int)write(me->outfile, buf, ret);
            if (ret == -1)
                return 1;
            buf += ret;
            len -= ret;
        } while (len != 0);
    return 0;
}

/* next input byte macro for use inside lunpipe() and gunpipe() */
#define NEXT() (have ? 0 : (have = in(indp, &next)), \
                last = have ? (have--, (int)(*next++)) : -1)

/* memory for gunpipe() and lunpipe() --
   the first 256 entries of prefix[] and suffix[] are never used, could
   have offset the index, but it's faster to waste the memory */
unsigned char inbuf[SIZE];              /* input buffer */
unsigned char outbuf[SIZE];             /* output buffer */
unsigned short prefix[65536];           /* index to LZW prefix string */
unsigned char suffix[65536];            /* one-character LZW suffix */
unsigned char match[65280 + 2];         /* buffer for reversed match or gzip
                                           32K sliding window */

/* throw out what's left in the current bits byte buffer (this is a vestigial
   aspect of the compressed data format derived from an implementation that
   made use of a special VAX machine instruction!) */
#define FLUSHCODE() \
    do { \
        left = 0; \
        rem = 0; \
        if (chunk > have) { \
            chunk -= have; \
            have = 0; \
            if (NEXT() == -1) \
                break; \
            chunk--; \
            if (chunk > have) { \
                chunk = have = 0; \
                break; \
            } \
        } \
        have -= chunk; \
        next += chunk; \
        chunk = 0; \
    } while (0)

/* Decompress a compress (LZW) file from indp to outfile.  The compress magic
   header (two bytes) has already been read and verified.  There are have bytes
   of buffered input at next.  strm is used for passing error information back
   to gunpipe().

   lunpipe() will return Z_OK on success, Z_BUF_ERROR for an unexpected end of
   file, read error, or write error (a write error indicated by strm->next_in
   not equal to Z_NULL), or Z_DATA_ERROR for invalid input.
 */
local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp,
                  int outfile, z_stream *strm)
{
    int last;                   /* last byte read by NEXT(), or -1 if EOF */
    unsigned chunk;             /* bytes left in current chunk */
    int left;                   /* bits left in rem */
    unsigned rem;               /* unused bits from input */
    int bits;                   /* current bits per code */
    unsigned code;              /* code, table traversal index */
    unsigned mask;              /* mask for current bits codes */
    int max;                    /* maximum bits per code for this stream */
    unsigned flags;             /* compress flags, then block compress flag */
    unsigned end;               /* last valid entry in prefix/suffix tables */
    unsigned temp;              /* current code */
    unsigned prev;              /* previous code */
    unsigned final;             /* last character written for previous code */
    unsigned stack;             /* next position for reversed string */
    unsigned outcnt;            /* bytes in output buffer */
    struct outd outd;           /* output structure */
    unsigned char *p;

    /* set up output */
    outd.outfile = outfile;
    outd.check = 0;

    /* process remainder of compress header -- a flags byte */
    flags = NEXT();
    if (last == -1)
        return Z_BUF_ERROR;
    if (flags & 0x60) {
        strm->msg = (char *)"unknown lzw flags set";
        return Z_DATA_ERROR;
    }
    max = flags & 0x1f;
    if (max < 9 || max > 16) {
        strm->msg = (char *)"lzw bits out of range";
        return Z_DATA_ERROR;
    }
    if (max == 9)                           /* 9 doesn't really mean 9 */
        max = 10;
    flags &= 0x80;                          /* true if block compress */

    /* clear table */
    bits = 9;
    mask = 0x1ff;
    end = flags ? 256 : 255;

    /* set up: get first 9-bit code, which is the first decompressed byte, but
       don't create a table entry until the next code */
    if (NEXT() == -1)                       /* no compressed data is ok */
        return Z_OK;
    final = prev = (unsigned)last;          /* low 8 bits of code */
    if (NEXT() == -1)                       /* missing a bit */
        return Z_BUF_ERROR;
    if (last & 1) {                         /* code must be < 256 */
        strm->msg = (char *)"invalid lzw code";
        return Z_DATA_ERROR;
    }
    rem = (unsigned)last >> 1;              /* remaining 7 bits */
    left = 7;
    chunk = bits - 2;                       /* 7 bytes left in this chunk */
    outbuf[0] = (unsigned char)final;       /* write first decompressed byte */
    outcnt = 1;

    /* decode codes */
    stack = 0;
    for (;;) {
        /* if the table will be full after this, increment the code size */
        if (end >= mask && bits < max) {
            FLUSHCODE();
            bits++;
            mask <<= 1;
            mask++;
        }

        /* get a code of length bits */
        if (chunk == 0)                     /* decrement chunk modulo bits */
            chunk = bits;
        code = rem;                         /* low bits of code */
        if (NEXT() == -1) {                 /* EOF is end of compressed data */
            /* write remaining buffered output */
            if (outcnt && out(&outd, outbuf, outcnt)) {
                strm->next_in = outbuf;     /* signal write error */
                return Z_BUF_ERROR;
            }
            return Z_OK;
        }
        code += (unsigned)last << left;     /* middle (or high) bits of code */
        left += 8;
        chunk--;
        if (bits > left) {                  /* need more bits */
            if (NEXT() == -1)               /* can't end in middle of code */
                return Z_BUF_ERROR;
            code += (unsigned)last << left; /* high bits of code */
            left += 8;
            chunk--;
        }
        code &= mask;                       /* mask to current code length */
        left -= bits;                       /* number of unused bits */
        rem = (unsigned)last >> (8 - left); /* unused bits from last byte */

        /* process clear code (256) */
        if (code == 256 && flags) {
            FLUSHCODE();
            bits = 9;                       /* initialize bits and mask */
            mask = 0x1ff;
            end = 255;                      /* empty table */
            continue;                       /* get next code */
        }

        /* special code to reuse last match */
        temp = code;                        /* save the current code */
        if (code > end) {
            /* Be picky on the allowed code here, and make sure that the code
               we drop through (prev) will be a valid index so that random
               input does not cause an exception.  The code != end + 1 check is
               empirically derived, and not checked in the original uncompress
               code.  If this ever causes a problem, that check could be safely
               removed.  Leaving this check in greatly improves gun's ability
               to detect random or corrupted input after a compress header.
               In any case, the prev > end check must be retained. */
            if (code != end + 1 || prev > end) {
                strm->msg = (char *)"invalid lzw code";
                return Z_DATA_ERROR;
            }
            match[stack++] = (unsigned char)final;
            code = prev;
        }

        /* walk through linked list to generate output in reverse order */
        p = match + stack;
        while (code >= 256) {
            *p++ = suffix[code];
            code = prefix[code];
        }
        stack = p - match;
        match[stack++] = (unsigned char)code;
        final = code;

        /* link new table entry */
        if (end < mask) {
            end++;
            prefix[end] = (unsigned short)prev;
            suffix[end] = (unsigned char)final;
        }

        /* set previous code for next iteration */
        prev = temp;

        /* write output in forward order */
        while (stack > SIZE - outcnt) {
            while (outcnt < SIZE)
                outbuf[outcnt++] = match[--stack];
            if (out(&outd, outbuf, outcnt)) {
                strm->next_in = outbuf; /* signal write error */
                return Z_BUF_ERROR;
            }
            outcnt = 0;
        }
        p = match + stack;
        do {
            outbuf[outcnt++] = *--p;
        } while (p > match);
        stack = 0;

        /* loop for next code with final and prev as the last match, rem and
           left provide the first 0..7 bits of the next code, end is the last
           valid table entry */
    }
}

/* Decompress a gzip file from infile to outfile.  strm is assumed to have been
   successfully initialized with inflateBackInit().  The input file may consist
   of a series of gzip streams, in which case all of them will be decompressed
   to the output file.  If outfile is -1, then the gzip stream(s) integrity is
   checked and nothing is written.

   The return value is a zlib error code: Z_MEM_ERROR if out of memory,
   Z_DATA_ERROR if the header or the compressed data is invalid, or if the
   trailer CRC-32 check or length doesn't match, Z_BUF_ERROR if the input ends
   prematurely or a write error occurs, or Z_ERRNO if junk (not a another gzip
   stream) follows a valid gzip stream.
 */
local int gunpipe(z_stream *strm, int infile, int outfile)
{
    int ret, first, last;
    unsigned have, flags, len;
    z_const unsigned char *next = NULL;
    struct ind ind, *indp;
    struct outd outd;

    /* setup input buffer */
    ind.infile = infile;
    ind.inbuf = inbuf;
    indp = &ind;

    /* decompress concatenated gzip streams */
    have = 0;                               /* no input data read in yet */
    first = 1;                              /* looking for first gzip header */
    strm->next_in = Z_NULL;                 /* so Z_BUF_ERROR means EOF */
    for (;;) {
        /* look for the two magic header bytes for a gzip stream */
        if (NEXT() == -1) {
            ret = Z_OK;
            break;                          /* empty gzip stream is ok */
        }
        if (last != 31 || (NEXT() != 139 && last != 157)) {
            strm->msg = (char *)"incorrect header check";
            ret = first ? Z_DATA_ERROR : Z_ERRNO;
            break;                          /* not a gzip or compress header */
        }
        first = 0;                          /* next non-header is junk */

        /* process a compress (LZW) file -- can't be concatenated after this */
        if (last == 157) {
            ret = lunpipe(have, next, indp, outfile, strm);
            break;
        }

        /* process remainder of gzip header */
        ret = Z_BUF_ERROR;
        if (NEXT() != 8) {                  /* only deflate method allowed */
            if (last == -1) break;
            strm->msg = (char *)"unknown compression method";
            ret = Z_DATA_ERROR;
            break;
        }
        flags = NEXT();                     /* header flags */
        NEXT();                             /* discard mod time, xflgs, os */
        NEXT();
        NEXT();
        NEXT();
        NEXT();
        NEXT();
        if (last == -1) break;
        if (flags & 0xe0) {
            strm->msg = (char *)"unknown header flags set";
            ret = Z_DATA_ERROR;
            break;
        }
        if (flags & 4) {                    /* extra field */
            len = NEXT();
            len += (unsigned)(NEXT()) << 8;
            if (last == -1) break;
            while (len > have) {
                len -= have;
                have = 0;
                if (NEXT() == -1) break;
                len--;
            }
            if (last == -1) break;
            have -= len;
            next += len;
        }
        if (flags & 8)                      /* file name */
            while (NEXT() != 0 && last != -1)
                ;
        if (flags & 16)                     /* comment */
            while (NEXT() != 0 && last != -1)
                ;
        if (flags & 2) {                    /* header crc */
            NEXT();
            NEXT();
        }
        if (last == -1) break;

        /* set up output */
        outd.outfile = outfile;
        outd.check = 1;
        outd.crc = crc32(0L, Z_NULL, 0);
        outd.total = 0;

        /* decompress data to output */
        strm->next_in = next;
        strm->avail_in = have;
        ret = inflateBack(strm, in, indp, out, &outd);
        if (ret != Z_STREAM_END) break;
        next = strm->next_in;
        have = strm->avail_in;
        strm->next_in = Z_NULL;             /* so Z_BUF_ERROR means EOF */

        /* check trailer */
        ret = Z_BUF_ERROR;
        if (NEXT() != (int)(outd.crc & 0xff) ||
            NEXT() != (int)((outd.crc >> 8) & 0xff) ||
            NEXT() != (int)((outd.crc >> 16) & 0xff) ||
            NEXT() != (int)((outd.crc >> 24) & 0xff)) {
            /* crc error */
            if (last != -1) {
                strm->msg = (char *)"incorrect data check";
                ret = Z_DATA_ERROR;
            }
            break;
        }
        if (NEXT() != (int)(outd.total & 0xff) ||
            NEXT() != (int)((outd.total >> 8) & 0xff) ||
            NEXT() != (int)((outd.total >> 16) & 0xff) ||
            NEXT() != (int)((outd.total >> 24) & 0xff)) {
            /* length error */
            if (last != -1) {
                strm->msg = (char *)"incorrect length check";
                ret = Z_DATA_ERROR;
            }
            break;
        }

        /* go back and look for another gzip stream */
    }

    /* clean up and return */
    return ret;
}

/* Copy file attributes, from -> to, as best we can.  This is best effort, so
   no errors are reported.  The mode bits, including suid, sgid, and the sticky
   bit are copied (if allowed), the owner's user id and group id are copied
   (again if allowed), and the access and modify times are copied. */
local void copymeta(char *from, char *to)
{
    struct stat was;
    struct utimbuf when;

    /* get all of from's Unix meta data, return if not a regular file */
    if (stat(from, &was) != 0 || (was.st_mode & S_IFMT) != S_IFREG)
        return;

    /* set to's mode bits, ignore errors */
    (void)chmod(to, was.st_mode & 07777);

    /* copy owner's user and group, ignore errors */
    (void)chown(to, was.st_uid, was.st_gid);

    /* copy access and modify times, ignore errors */
    when.actime = was.st_atime;
    when.modtime = was.st_mtime;
    (void)utime(to, &when);
}

/* Decompress the file inname to the file outnname, of if test is true, just
   decompress without writing and check the gzip trailer for integrity.  If
   inname is NULL or an empty string, read from stdin.  If outname is NULL or
   an empty string, write to stdout.  strm is a pre-initialized inflateBack
   structure.  When appropriate, copy the file attributes from inname to
   outname.

   gunzip() returns 1 if there is an out-of-memory error or an unexpected
   return code from gunpipe().  Otherwise it returns 0.
 */
local int gunzip(z_stream *strm, char *inname, char *outname, int test)
{
    int ret;
    int infile, outfile;

    /* open files */
    if (inname == NULL || *inname == 0) {
        inname = "-";
        infile = 0;     /* stdin */
    }
    else {
        infile = open(inname, O_RDONLY, 0);
        if (infile == -1) {
            fprintf(stderr, "gun cannot open %s\n", inname);
            return 0;
        }
    }
    if (test)
        outfile = -1;
    else if (outname == NULL || *outname == 0) {
        outname = "-";
        outfile = 1;    /* stdout */
    }
    else {
        outfile = open(outname, O_CREAT | O_TRUNC | O_WRONLY, 0666);
        if (outfile == -1) {
            close(infile);
            fprintf(stderr, "gun cannot create %s\n", outname);
            return 0;
        }
    }
    errno = 0;

    /* decompress */
    ret = gunpipe(strm, infile, outfile);
    if (outfile > 2) close(outfile);
    if (infile > 2) close(infile);

    /* interpret result */
    switch (ret) {
    case Z_OK:
    case Z_ERRNO:
        if (infile > 2 && outfile > 2) {
            copymeta(inname, outname);          /* copy attributes */
            unlink(inname);
        }
        if (ret == Z_ERRNO)
            fprintf(stderr, "gun warning: trailing garbage ignored in %s\n",
                    inname);
        break;
    case Z_DATA_ERROR:
        if (outfile > 2) unlink(outname);
        fprintf(stderr, "gun data error on %s: %s\n", inname, strm->msg);
        break;
    case Z_MEM_ERROR:
        if (outfile > 2) unlink(outname);
        fprintf(stderr, "gun out of memory error--aborting\n");
        return 1;
    case Z_BUF_ERROR:
        if (outfile > 2) unlink(outname);
        if (strm->next_in != Z_NULL) {
            fprintf(stderr, "gun write error on %s: %s\n",
                    outname, strerror(errno));
        }
        else if (errno) {
            fprintf(stderr, "gun read error on %s: %s\n",
                    inname, strerror(errno));
        }
        else {
            fprintf(stderr, "gun unexpected end of file on %s\n",
                    inname);
        }
        break;
    default:
        if (outfile > 2) unlink(outname);
        fprintf(stderr, "gun internal error--aborting\n");
        return 1;
    }
    return 0;
}

/* Process the gun command line arguments.  See the command syntax near the
   beginning of this source file. */
int main(int argc, char **argv)
{
    int ret, len, test;
    char *outname;
    unsigned char *window;
    z_stream strm;

    /* initialize inflateBack state for repeated use */
    window = match;                         /* reuse LZW match buffer */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    ret = inflateBackInit(&strm, 15, window);
    if (ret != Z_OK) {
        fprintf(stderr, "gun out of memory error--aborting\n");
        return 1;
    }

    /* decompress each file to the same name with the suffix removed */
    argc--;
    argv++;
    test = 0;
    if (argc && strcmp(*argv, "-h") == 0) {
        fprintf(stderr, "gun 1.6 (17 Jan 2010)\n");
        fprintf(stderr, "Copyright (C) 2003-2010 Mark Adler\n");
        fprintf(stderr, "usage: gun [-t] [file1.gz [file2.Z ...]]\n");
        return 0;
    }
    if (argc && strcmp(*argv, "-t") == 0) {
        test = 1;
        argc--;
        argv++;
    }
    if (argc)
        do {
            if (test)
                outname = NULL;
            else {
                len = (int)strlen(*argv);
                if (strcmp(*argv + len - 3, ".gz") == 0 ||
                    strcmp(*argv + len - 3, "-gz") == 0)
                    len -= 3;
                else if (strcmp(*argv + len - 2, ".z") == 0 ||
                    strcmp(*argv + len - 2, "-z") == 0 ||
                    strcmp(*argv + len - 2, "_z") == 0 ||
                    strcmp(*argv + len - 2, ".Z") == 0)
                    len -= 2;
                else {
                    fprintf(stderr, "gun error: no gz type on %s--skipping\n",
                            *argv);
                    continue;
                }
                outname = malloc(len + 1);
                if (outname == NULL) {
                    fprintf(stderr, "gun out of memory error--aborting\n");
                    ret = 1;
                    break;
                }
                memcpy(outname, *argv, len);
                outname[len] = 0;
            }
            ret = gunzip(&strm, *argv, outname, test);
            if (outname != NULL) free(outname);
            if (ret) break;
        } while (argv++, --argc);
    else
        ret = gunzip(&strm, NULL, NULL, test);

    /* clean up */
    inflateBackEnd(&strm);
    return ret;
}
Added compat/zlib/examples/gzappend.c.
























































































































































































































































































































































































































































































































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/* gzappend -- command to append to a gzip file

  Copyright (C) 2003, 2012 Mark Adler, all rights reserved
  version 1.2, 11 Oct 2012

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the author be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Mark Adler    madler@alumni.caltech.edu
 */

/*
 * Change history:
 *
 * 1.0  19 Oct 2003     - First version
 * 1.1   4 Nov 2003     - Expand and clarify some comments and notes
 *                      - Add version and copyright to help
 *                      - Send help to stdout instead of stderr
 *                      - Add some preemptive typecasts
 *                      - Add L to constants in lseek() calls
 *                      - Remove some debugging information in error messages
 *                      - Use new data_type definition for zlib 1.2.1
 *                      - Simplify and unify file operations
 *                      - Finish off gzip file in gztack()
 *                      - Use deflatePrime() instead of adding empty blocks
 *                      - Keep gzip file clean on appended file read errors
 *                      - Use in-place rotate instead of auxiliary buffer
 *                        (Why you ask?  Because it was fun to write!)
 * 1.2  11 Oct 2012     - Fix for proper z_const usage
 *                      - Check for input buffer malloc failure
 */

/*
   gzappend takes a gzip file and appends to it, compressing files from the
   command line or data from stdin.  The gzip file is written to directly, to
   avoid copying that file, in case it's large.  Note that this results in the
   unfriendly behavior that if gzappend fails, the gzip file is corrupted.

   This program was written to illustrate the use of the new Z_BLOCK option of
   zlib 1.2.x's inflate() function.  This option returns from inflate() at each
   block boundary to facilitate locating and modifying the last block bit at
   the start of the final deflate block.  Also whether using Z_BLOCK or not,
   another required feature of zlib 1.2.x is that inflate() now provides the
   number of unused bits in the last input byte used.  gzappend will not work
   with versions of zlib earlier than 1.2.1.

   gzappend first decompresses the gzip file internally, discarding all but
   the last 32K of uncompressed data, and noting the location of the last block
   bit and the number of unused bits in the last byte of the compressed data.
   The gzip trailer containing the CRC-32 and length of the uncompressed data
   is verified.  This trailer will be later overwritten.

   Then the last block bit is cleared by seeking back in the file and rewriting
   the byte that contains it.  Seeking forward, the last byte of the compressed
   data is saved along with the number of unused bits to initialize deflate.

   A deflate process is initialized, using the last 32K of the uncompressed
   data from the gzip file to initialize the dictionary.  If the total
   uncompressed data was less than 32K, then all of it is used to initialize
   the dictionary.  The deflate output bit buffer is also initialized with the
   last bits from the original deflate stream.  From here on, the data to
   append is simply compressed using deflate, and written to the gzip file.
   When that is complete, the new CRC-32 and uncompressed length are written
   as the trailer of the gzip file.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include "zlib.h"

#define local static
#define LGCHUNK 14
#define CHUNK (1U << LGCHUNK)
#define DSIZE 32768U

/* print an error message and terminate with extreme prejudice */
local void bye(char *msg1, char *msg2)
{
    fprintf(stderr, "gzappend error: %s%s\n", msg1, msg2);
    exit(1);
}

/* return the greatest common divisor of a and b using Euclid's algorithm,
   modified to be fast when one argument much greater than the other, and
   coded to avoid unnecessary swapping */
local unsigned gcd(unsigned a, unsigned b)
{
    unsigned c;

    while (a && b)
        if (a > b) {
            c = b;
            while (a - c >= c)
                c <<= 1;
            a -= c;
        }
        else {
            c = a;
            while (b - c >= c)
                c <<= 1;
            b -= c;
        }
    return a + b;
}

/* rotate list[0..len-1] left by rot positions, in place */
local void rotate(unsigned char *list, unsigned len, unsigned rot)
{
    unsigned char tmp;
    unsigned cycles;
    unsigned char *start, *last, *to, *from;

    /* normalize rot and handle degenerate cases */
    if (len < 2) return;
    if (rot >= len) rot %= len;
    if (rot == 0) return;

    /* pointer to last entry in list */
    last = list + (len - 1);

    /* do simple left shift by one */
    if (rot == 1) {
        tmp = *list;
        memmove(list, list + 1, len - 1);
        *last = tmp;
        return;
    }

    /* do simple right shift by one */
    if (rot == len - 1) {
        tmp = *last;
        memmove(list + 1, list, len - 1);
        *list = tmp;
        return;
    }

    /* otherwise do rotate as a set of cycles in place */
    cycles = gcd(len, rot);             /* number of cycles */
    do {
        start = from = list + cycles;   /* start index is arbitrary */
        tmp = *from;                    /* save entry to be overwritten */
        for (;;) {
            to = from;                  /* next step in cycle */
            from += rot;                /* go right rot positions */
            if (from > last) from -= len;   /* (pointer better not wrap) */
            if (from == start) break;   /* all but one shifted */
            *to = *from;                /* shift left */
        }
        *to = tmp;                      /* complete the circle */
    } while (--cycles);
}

/* structure for gzip file read operations */
typedef struct {
    int fd;                     /* file descriptor */
    int size;                   /* 1 << size is bytes in buf */
    unsigned left;              /* bytes available at next */
    unsigned char *buf;         /* buffer */
    z_const unsigned char *next;    /* next byte in buffer */
    char *name;                 /* file name for error messages */
} file;

/* reload buffer */
local int readin(file *in)
{
    int len;

    len = read(in->fd, in->buf, 1 << in->size);
    if (len == -1) bye("error reading ", in->name);
    in->left = (unsigned)len;
    in->next = in->buf;
    return len;
}

/* read from file in, exit if end-of-file */
local int readmore(file *in)
{
    if (readin(in) == 0) bye("unexpected end of ", in->name);
    return 0;
}

#define read1(in) (in->left == 0 ? readmore(in) : 0, \
                   in->left--, *(in->next)++)

/* skip over n bytes of in */
local void skip(file *in, unsigned n)
{
    unsigned bypass;

    if (n > in->left) {
        n -= in->left;
        bypass = n & ~((1U << in->size) - 1);
        if (bypass) {
            if (lseek(in->fd, (off_t)bypass, SEEK_CUR) == -1)
                bye("seeking ", in->name);
            n -= bypass;
        }
        readmore(in);
        if (n > in->left)
            bye("unexpected end of ", in->name);
    }
    in->left -= n;
    in->next += n;
}

/* read a four-byte unsigned integer, little-endian, from in */
unsigned long read4(file *in)
{
    unsigned long val;

    val = read1(in);
    val += (unsigned)read1(in) << 8;
    val += (unsigned long)read1(in) << 16;
    val += (unsigned long)read1(in) << 24;
    return val;
}

/* skip over gzip header */
local void gzheader(file *in)
{
    int flags;
    unsigned n;

    if (read1(in) != 31 || read1(in) != 139) bye(in->name, " not a gzip file");
    if (read1(in) != 8) bye("unknown compression method in", in->name);
    flags = read1(in);
    if (flags & 0xe0) bye("unknown header flags set in", in->name);
    skip(in, 6);
    if (flags & 4) {
        n = read1(in);
        n += (unsigned)(read1(in)) << 8;
        skip(in, n);
    }
    if (flags & 8) while (read1(in) != 0) ;
    if (flags & 16) while (read1(in) != 0) ;
    if (flags & 2) skip(in, 2);
}

/* decompress gzip file "name", return strm with a deflate stream ready to
   continue compression of the data in the gzip file, and return a file
   descriptor pointing to where to write the compressed data -- the deflate
   stream is initialized to compress using level "level" */
local int gzscan(char *name, z_stream *strm, int level)
{
    int ret, lastbit, left, full;
    unsigned have;
    unsigned long crc, tot;
    unsigned char *window;
    off_t lastoff, end;
    file gz;

    /* open gzip file */
    gz.name = name;
    gz.fd = open(name, O_RDWR, 0);
    if (gz.fd == -1) bye("cannot open ", name);
    gz.buf = malloc(CHUNK);
    if (gz.buf == NULL) bye("out of memory", "");
    gz.size = LGCHUNK;
    gz.left = 0;

    /* skip gzip header */
    gzheader(&gz);

    /* prepare to decompress */
    window = malloc(DSIZE);
    if (window == NULL) bye("out of memory", "");
    strm->zalloc = Z_NULL;
    strm->zfree = Z_NULL;
    strm->opaque = Z_NULL;
    ret = inflateInit2(strm, -15);
    if (ret != Z_OK) bye("out of memory", " or library mismatch");

    /* decompress the deflate stream, saving append information */
    lastbit = 0;
    lastoff = lseek(gz.fd, 0L, SEEK_CUR) - gz.left;
    left = 0;
    strm->avail_in = gz.left;
    strm->next_in = gz.next;
    crc = crc32(0L, Z_NULL, 0);
    have = full = 0;
    do {
        /* if needed, get more input */
        if (strm->avail_in == 0) {
            readmore(&gz);
            strm->avail_in = gz.left;
            strm->next_in = gz.next;
        }

        /* set up output to next available section of sliding window */
        strm->avail_out = DSIZE - have;
        strm->next_out = window + have;

        /* inflate and check for errors */
        ret = inflate(strm, Z_BLOCK);
        if (ret == Z_STREAM_ERROR) bye("internal stream error!", "");
        if (ret == Z_MEM_ERROR) bye("out of memory", "");
        if (ret == Z_DATA_ERROR)
            bye("invalid compressed data--format violated in", name);

        /* update crc and sliding window pointer */
        crc = crc32(crc, window + have, DSIZE - have - strm->avail_out);
        if (strm->avail_out)
            have = DSIZE - strm->avail_out;
        else {
            have = 0;
            full = 1;
        }

        /* process end of block */
        if (strm->data_type & 128) {
            if (strm->data_type & 64)
                left = strm->data_type & 0x1f;
            else {
                lastbit = strm->data_type & 0x1f;
                lastoff = lseek(gz.fd, 0L, SEEK_CUR) - strm->avail_in;
            }
        }
    } while (ret != Z_STREAM_END);
    inflateEnd(strm);
    gz.left = strm->avail_in;
    gz.next = strm->next_in;

    /* save the location of the end of the compressed data */
    end = lseek(gz.fd, 0L, SEEK_CUR) - gz.left;

    /* check gzip trailer and save total for deflate */
    if (crc != read4(&gz))
        bye("invalid compressed data--crc mismatch in ", name);
    tot = strm->total_out;
    if ((tot & 0xffffffffUL) != read4(&gz))
        bye("invalid compressed data--length mismatch in", name);

    /* if not at end of file, warn */
    if (gz.left || readin(&gz))
        fprintf(stderr,
            "gzappend warning: junk at end of gzip file overwritten\n");

    /* clear last block bit */
    lseek(gz.fd, lastoff - (lastbit != 0), SEEK_SET);
    if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name);
    *gz.buf = (unsigned char)(*gz.buf ^ (1 << ((8 - lastbit) & 7)));
    lseek(gz.fd, -1L, SEEK_CUR);
    if (write(gz.fd, gz.buf, 1) != 1) bye("writing after seek to ", name);

    /* if window wrapped, build dictionary from window by rotating */
    if (full) {
        rotate(window, DSIZE, have);
        have = DSIZE;
    }

    /* set up deflate stream with window, crc, total_in, and leftover bits */
    ret = deflateInit2(strm, level, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY);
    if (ret != Z_OK) bye("out of memory", "");
    deflateSetDictionary(strm, window, have);
    strm->adler = crc;
    strm->total_in = tot;
    if (left) {
        lseek(gz.fd, --end, SEEK_SET);
        if (read(gz.fd, gz.buf, 1) != 1) bye("reading after seek on ", name);
        deflatePrime(strm, 8 - left, *gz.buf);
    }
    lseek(gz.fd, end, SEEK_SET);

    /* clean up and return */
    free(window);
    free(gz.buf);
    return gz.fd;
}

/* append file "name" to gzip file gd using deflate stream strm -- if last
   is true, then finish off the deflate stream at the end */
local void gztack(char *name, int gd, z_stream *strm, int last)
{
    int fd, len, ret;
    unsigned left;
    unsigned char *in, *out;

    /* open file to compress and append */
    fd = 0;
    if (name != NULL) {
        fd = open(name, O_RDONLY, 0);
        if (fd == -1)
            fprintf(stderr, "gzappend warning: %s not found, skipping ...\n",
                    name);
    }

    /* allocate buffers */
    in = malloc(CHUNK);
    out = malloc(CHUNK);
    if (in == NULL || out == NULL) bye("out of memory", "");

    /* compress input file and append to gzip file */
    do {
        /* get more input */
        len = read(fd, in, CHUNK);
        if (len == -1) {
            fprintf(stderr,
                    "gzappend warning: error reading %s, skipping rest ...\n",
                    name);
            len = 0;
        }
        strm->avail_in = (unsigned)len;
        strm->next_in = in;
        if (len) strm->adler = crc32(strm->adler, in, (unsigned)len);

        /* compress and write all available output */
        do {
            strm->avail_out = CHUNK;
            strm->next_out = out;
            ret = deflate(strm, last && len == 0 ? Z_FINISH : Z_NO_FLUSH);
            left = CHUNK - strm->avail_out;
            while (left) {
                len = write(gd, out + CHUNK - strm->avail_out - left, left);
                if (len == -1) bye("writing gzip file", "");
                left -= (unsigned)len;
            }
        } while (strm->avail_out == 0 && ret != Z_STREAM_END);
    } while (len != 0);

    /* write trailer after last entry */
    if (last) {
        deflateEnd(strm);
        out[0] = (unsigned char)(strm->adler);
        out[1] = (unsigned char)(strm->adler >> 8);
        out[2] = (unsigned char)(strm->adler >> 16);
        out[3] = (unsigned char)(strm->adler >> 24);
        out[4] = (unsigned char)(strm->total_in);
        out[5] = (unsigned char)(strm->total_in >> 8);
        out[6] = (unsigned char)(strm->total_in >> 16);
        out[7] = (unsigned char)(strm->total_in >> 24);
        len = 8;
        do {
            ret = write(gd, out + 8 - len, len);
            if (ret == -1) bye("writing gzip file", "");
            len -= ret;
        } while (len);
        close(gd);
    }

    /* clean up and return */
    free(out);
    free(in);
    if (fd > 0) close(fd);
}

/* process the compression level option if present, scan the gzip file, and
   append the specified files, or append the data from stdin if no other file
   names are provided on the command line -- the gzip file must be writable
   and seekable */
int main(int argc, char **argv)
{
    int gd, level;
    z_stream strm;

    /* ignore command name */
    argc--; argv++;

    /* provide usage if no arguments */
    if (*argv == NULL) {
        printf(
            "gzappend 1.2 (11 Oct 2012) Copyright (C) 2003, 2012 Mark Adler\n"
               );
        printf(
            "usage: gzappend [-level] file.gz [ addthis [ andthis ... ]]\n");
        return 0;
    }

    /* set compression level */
    level = Z_DEFAULT_COMPRESSION;
    if (argv[0][0] == '-') {
        if (argv[0][1] < '0' || argv[0][1] > '9' || argv[0][2] != 0)
            bye("invalid compression level", "");
        level = argv[0][1] - '0';
        if (*++argv == NULL) bye("no gzip file name after options", "");
    }

    /* prepare to append to gzip file */
    gd = gzscan(*argv++, &strm, level);

    /* append files on command line, or from stdin if none */
    if (*argv == NULL)
        gztack(NULL, gd, &strm, 1);
    else
        do {
            gztack(*argv, gd, &strm, argv[1] == NULL);
        } while (*++argv != NULL);
    return 0;
}
Added compat/zlib/examples/gzjoin.c.

































































































































































































































































































































































































































































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/* gzjoin -- command to join gzip files into one gzip file

  Copyright (C) 2004, 2005, 2012 Mark Adler, all rights reserved
  version 1.2, 14 Aug 2012

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the author be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Mark Adler    madler@alumni.caltech.edu
 */

/*
 * Change history:
 *
 * 1.0  11 Dec 2004     - First version
 * 1.1  12 Jun 2005     - Changed ssize_t to long for portability
 * 1.2  14 Aug 2012     - Clean up for z_const usage
 */

/*
   gzjoin takes one or more gzip files on the command line and writes out a
   single gzip file that will uncompress to the concatenation of the
   uncompressed data from the individual gzip files.  gzjoin does this without
   having to recompress any of the data and without having to calculate a new
   crc32 for the concatenated uncompressed data.  gzjoin does however have to
   decompress all of the input data in order to find the bits in the compressed
   data that need to be modified to concatenate the streams.

   gzjoin does not do an integrity check on the input gzip files other than
   checking the gzip header and decompressing the compressed data.  They are
   otherwise assumed to be complete and correct.

   Each joint between gzip files removes at least 18 bytes of previous trailer
   and subsequent header, and inserts an average of about three bytes to the
   compressed data in order to connect the streams.  The output gzip file
   has a minimal ten-byte gzip header with no file name or modification time.

   This program was written to illustrate the use of the Z_BLOCK option of
   inflate() and the crc32_combine() function.  gzjoin will not compile with
   versions of zlib earlier than 1.2.3.
 */

#include <stdio.h>      /* fputs(), fprintf(), fwrite(), putc() */
#include <stdlib.h>     /* exit(), malloc(), free() */
#include <fcntl.h>      /* open() */
#include <unistd.h>     /* close(), read(), lseek() */
#include "zlib.h"
    /* crc32(), crc32_combine(), inflateInit2(), inflate(), inflateEnd() */

#define local static

/* exit with an error (return a value to allow use in an expression) */
local int bail(char *why1, char *why2)
{
    fprintf(stderr, "gzjoin error: %s%s, output incomplete\n", why1, why2);
    exit(1);
    return 0;
}

/* -- simple buffered file input with access to the buffer -- */

#define CHUNK 32768         /* must be a power of two and fit in unsigned */

/* bin buffered input file type */
typedef struct {
    char *name;             /* name of file for error messages */
    int fd;                 /* file descriptor */
    unsigned left;          /* bytes remaining at next */
    unsigned char *next;    /* next byte to read */
    unsigned char *buf;     /* allocated buffer of length CHUNK */
} bin;

/* close a buffered file and free allocated memory */
local void bclose(bin *in)
{
    if (in != NULL) {
        if (in->fd != -1)
            close(in->fd);
        if (in->buf != NULL)
            free(in->buf);
        free(in);
    }
}

/* open a buffered file for input, return a pointer to type bin, or NULL on
   failure */
local bin *bopen(char *name)
{
    bin *in;

    in = malloc(sizeof(bin));
    if (in == NULL)
        return NULL;
    in->buf = malloc(CHUNK);
    in->fd = open(name, O_RDONLY, 0);
    if (in->buf == NULL || in->fd == -1) {
        bclose(in);
        return NULL;
    }
    in->left = 0;
    in->next = in->buf;
    in->name = name;
    return in;
}

/* load buffer from file, return -1 on read error, 0 or 1 on success, with
   1 indicating that end-of-file was reached */
local int bload(bin *in)
{
    long len;

    if (in == NULL)
        return -1;
    if (in->left != 0)
        return 0;
    in->next = in->buf;
    do {
        len = (long)read(in->fd, in->buf + in->left, CHUNK - in->left);
        if (len < 0)
            return -1;
        in->left += (unsigned)len;
    } while (len != 0 && in->left < CHUNK);
    return len == 0 ? 1 : 0;
}

/* get a byte from the file, bail if end of file */
#define bget(in) (in->left ? 0 : bload(in), \
                  in->left ? (in->left--, *(in->next)++) : \
                    bail("unexpected end of file on ", in->name))

/* get a four-byte little-endian unsigned integer from file */
local unsigned long bget4(bin *in)
{
    unsigned long val;

    val = bget(in);
    val += (unsigned long)(bget(in)) << 8;
    val += (unsigned long)(bget(in)) << 16;
    val += (unsigned long)(bget(in)) << 24;
    return val;
}

/* skip bytes in file */
local void bskip(bin *in, unsigned skip)
{
    /* check pointer */
    if (in == NULL)
        return;

    /* easy case -- skip bytes in buffer */
    if (skip <= in->left) {
        in->left -= skip;
        in->next += skip;
        return;
    }

    /* skip what's in buffer, discard buffer contents */
    skip -= in->left;
    in->left = 0;

    /* seek past multiples of CHUNK bytes */
    if (skip > CHUNK) {
        unsigned left;

        left = skip & (CHUNK - 1);
        if (left == 0) {
            /* exact number of chunks: seek all the way minus one byte to check
               for end-of-file with a read */
            lseek(in->fd, skip - 1, SEEK_CUR);
            if (read(in->fd, in->buf, 1) != 1)
                bail("unexpected end of file on ", in->name);
            return;
        }

        /* skip the integral chunks, update skip with remainder */
        lseek(in->fd, skip - left, SEEK_CUR);
        skip = left;
    }

    /* read more input and skip remainder */
    bload(in);
    if (skip > in->left)
        bail("unexpected end of file on ", in->name);
    in->left -= skip;
    in->next += skip;
}

/* -- end of buffered input functions -- */

/* skip the gzip header from file in */
local void gzhead(bin *in)
{
    int flags;

    /* verify gzip magic header and compression method */
    if (bget(in) != 0x1f || bget(in) != 0x8b || bget(in) != 8)
        bail(in->name, " is not a valid gzip file");

    /* get and verify flags */
    flags = bget(in);
    if ((flags & 0xe0) != 0)
        bail("unknown reserved bits set in ", in->name);

    /* skip modification time, extra flags, and os */
    bskip(in, 6);

    /* skip extra field if present */
    if (flags & 4) {
        unsigned len;

        len = bget(in);
        len += (unsigned)(bget(in)) << 8;
        bskip(in, len);
    }

    /* skip file name if present */
    if (flags & 8)
        while (bget(in) != 0)
            ;

    /* skip comment if present */
    if (flags & 16)
        while (bget(in) != 0)
            ;

    /* skip header crc if present */
    if (flags & 2)
        bskip(in, 2);
}

/* write a four-byte little-endian unsigned integer to out */
local void put4(unsigned long val, FILE *out)
{
    putc(val & 0xff, out);
    putc((val >> 8) & 0xff, out);
    putc((val >> 16) & 0xff, out);
    putc((val >> 24) & 0xff, out);
}

/* Load up zlib stream from buffered input, bail if end of file */
local void zpull(z_streamp strm, bin *in)
{
    if (in->left == 0)
        bload(in);
    if (in->left == 0)
        bail("unexpected end of file on ", in->name);
    strm->avail_in = in->left;
    strm->next_in = in->next;
}

/* Write header for gzip file to out and initialize trailer. */
local void gzinit(unsigned long *crc, unsigned long *tot, FILE *out)
{
    fwrite("\x1f\x8b\x08\0\0\0\0\0\0\xff", 1, 10, out);
    *crc = crc32(0L, Z_NULL, 0);
    *tot = 0;
}

/* Copy the compressed data from name, zeroing the last block bit of the last
   block if clr is true, and adding empty blocks as needed to get to a byte
   boundary.  If clr is false, then the last block becomes the last block of
   the output, and the gzip trailer is written.  crc and tot maintains the
   crc and length (modulo 2^32) of the output for the trailer.  The resulting
   gzip file is written to out.  gzinit() must be called before the first call
   of gzcopy() to write the gzip header and to initialize crc and tot. */
local void gzcopy(char *name, int clr, unsigned long *crc, unsigned long *tot,
                  FILE *out)
{
    int ret;                /* return value from zlib functions */
    int pos;                /* where the "last block" bit is in byte */
    int last;               /* true if processing the last block */
    bin *in;                /* buffered input file */
    unsigned char *start;   /* start of compressed data in buffer */
    unsigned char *junk;    /* buffer for uncompressed data -- discarded */
    z_off_t len;            /* length of uncompressed data (support > 4 GB) */
    z_stream strm;          /* zlib inflate stream */

    /* open gzip file and skip header */
    in = bopen(name);
    if (in == NULL)
        bail("could not open ", name);
    gzhead(in);

    /* allocate buffer for uncompressed data and initialize raw inflate
       stream */
    junk = malloc(CHUNK);
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit2(&strm, -15);
    if (junk == NULL || ret != Z_OK)
        bail("out of memory", "");

    /* inflate and copy compressed data, clear last-block bit if requested */
    len = 0;
    zpull(&strm, in);
    start = in->next;
    last = start[0] & 1;
    if (last && clr)
        start[0] &= ~1;
    strm.avail_out = 0;
    for (;;) {
        /* if input used and output done, write used input and get more */
        if (strm.avail_in == 0 && strm.avail_out != 0) {
            fwrite(start, 1, strm.next_in - start, out);
            start = in->buf;
            in->left = 0;
            zpull(&strm, in);
        }

        /* decompress -- return early when end-of-block reached */
        strm.avail_out = CHUNK;
        strm.next_out = junk;
        ret = inflate(&strm, Z_BLOCK);
        switch (ret) {
        case Z_MEM_ERROR:
            bail("out of memory", "");
        case Z_DATA_ERROR:
            bail("invalid compressed data in ", in->name);
        }

        /* update length of uncompressed data */
        len += CHUNK - strm.avail_out;

        /* check for block boundary (only get this when block copied out) */
        if (strm.data_type & 128) {
            /* if that was the last block, then done */
            if (last)
                break;

            /* number of unused bits in last byte */
            pos = strm.data_type & 7;

            /* find the next last-block bit */
            if (pos != 0) {
                /* next last-block bit is in last used byte */
                pos = 0x100 >> pos;
                last = strm.next_in[-1] & pos;
                if (last && clr)
                    in->buf[strm.next_in - in->buf - 1] &= ~pos;
            }
            else {
                /* next last-block bit is in next unused byte */
                if (strm.avail_in == 0) {
                    /* don't have that byte yet -- get it */
                    fwrite(start, 1, strm.next_in - start, out);
                    start = in->buf;
                    in->left = 0;
                    zpull(&strm, in);
                }
                last = strm.next_in[0] & 1;
                if (last && clr)
                    in->buf[strm.next_in - in->buf] &= ~1;
            }
        }
    }

    /* update buffer with unused input */
    in->left = strm.avail_in;
    in->next = in->buf + (strm.next_in - in->buf);

    /* copy used input, write empty blocks to get to byte boundary */
    pos = strm.data_type & 7;
    fwrite(start, 1, in->next - start - 1, out);
    last = in->next[-1];
    if (pos == 0 || !clr)
        /* already at byte boundary, or last file: write last byte */
        putc(last, out);
    else {
        /* append empty blocks to last byte */
        last &= ((0x100 >> pos) - 1);       /* assure unused bits are zero */
        if (pos & 1) {
            /* odd -- append an empty stored block */
            putc(last, out);
            if (pos == 1)
                putc(0, out);               /* two more bits in block header */
            fwrite("\0\0\xff\xff", 1, 4, out);
        }
        else {
            /* even -- append 1, 2, or 3 empty fixed blocks */
            switch (pos) {
            case 6:
                putc(last | 8, out);
                last = 0;
            case 4:
                putc(last | 0x20, out);
                last = 0;
            case 2:
                putc(last | 0x80, out);
                putc(0, out);
            }
        }
    }

    /* update crc and tot */
    *crc = crc32_combine(*crc, bget4(in), len);
    *tot += (unsigned long)len;

    /* clean up */
    inflateEnd(&strm);
    free(junk);
    bclose(in);

    /* write trailer if this is the last gzip file */
    if (!clr) {
        put4(*crc, out);
        put4(*tot, out);
    }
}

/* join the gzip files on the command line, write result to stdout */
int main(int argc, char **argv)
{
    unsigned long crc, tot;     /* running crc and total uncompressed length */

    /* skip command name */
    argc--;
    argv++;

    /* show usage if no arguments */
    if (argc == 0) {
        fputs("gzjoin usage: gzjoin f1.gz [f2.gz [f3.gz ...]] > fjoin.gz\n",
              stderr);
        return 0;
    }

    /* join gzip files on command line and write to stdout */
    gzinit(&crc, &tot, stdout);
    while (argc--)
        gzcopy(*argv++, argc, &crc, &tot, stdout);

    /* done */
    return 0;
}
Added compat/zlib/examples/gzlog.c.





































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * gzlog.c
 * Copyright (C) 2004, 2008, 2012, 2016, 2019 Mark Adler, all rights reserved
 * For conditions of distribution and use, see copyright notice in gzlog.h
 * version 2.3, 25 May 2019
 */

/*
   gzlog provides a mechanism for frequently appending short strings to a gzip
   file that is efficient both in execution time and compression ratio.  The
   strategy is to write the short strings in an uncompressed form to the end of
   the gzip file, only compressing when the amount of uncompressed data has
   reached a given threshold.

   gzlog also provides protection against interruptions in the process due to
   system crashes.  The status of the operation is recorded in an extra field
   in the gzip file, and is only updated once the gzip file is brought to a
   valid state.  The last data to be appended or compressed is saved in an
   auxiliary file, so that if the operation is interrupted, it can be completed
   the next time an append operation is attempted.

   gzlog maintains another auxiliary file with the last 32K of data from the
   compressed portion, which is preloaded for the compression of the subsequent
   data.  This minimizes the impact to the compression ratio of appending.
 */

/*
   Operations Concept:

   Files (log name "foo"):
   foo.gz -- gzip file with the complete log
   foo.add -- last message to append or last data to compress
   foo.dict -- dictionary of the last 32K of data for next compression
   foo.temp -- temporary dictionary file for compression after this one
   foo.lock -- lock file for reading and writing the other files
   foo.repairs -- log file for log file recovery operations (not compressed)

   gzip file structure:
   - fixed-length (no file name) header with extra field (see below)
   - compressed data ending initially with empty stored block
   - uncompressed data filling out originally empty stored block and
     subsequent stored blocks as needed (16K max each)
   - gzip trailer
   - no junk at end (no other gzip streams)

   When appending data, the information in the first three items above plus the
   foo.add file are sufficient to recover an interrupted append operation.  The
   extra field has the necessary information to restore the start of the last
   stored block and determine where to append the data in the foo.add file, as
   well as the crc and length of the gzip data before the append operation.

   The foo.add file is created before the gzip file is marked for append, and
   deleted after the gzip file is marked as complete.  So if the append
   operation is interrupted, the data to add will still be there.  If due to
   some external force, the foo.add file gets deleted between when the append
   operation was interrupted and when recovery is attempted, the gzip file will
   still be restored, but without the appended data.

   When compressing data, the information in the first two items above plus the
   foo.add file are sufficient to recover an interrupted compress operation.
   The extra field has the necessary information to find the end of the
   compressed data, and contains both the crc and length of just the compressed
   data and of the complete set of data including the contents of the foo.add
   file.

   Again, the foo.add file is maintained during the compress operation in case
   of an interruption.  If in the unlikely event the foo.add file with the data
   to be compressed is missing due to some external force, a gzip file with
   just the previous compressed data will be reconstructed.  In this case, all
   of the data that was to be compressed is lost (approximately one megabyte).
   This will not occur if all that happened was an interruption of the compress
   operation.

   The third state that is marked is the replacement of the old dictionary with
   the new dictionary after a compress operation.  Once compression is
   complete, the gzip file is marked as being in the replace state.  This
   completes the gzip file, so an interrupt after being so marked does not
   result in recompression.  Then the dictionary file is replaced, and the gzip
   file is marked as completed.  This state prevents the possibility of
   restarting compression with the wrong dictionary file.

   All three operations are wrapped by a lock/unlock procedure.  In order to
   gain exclusive access to the log files, first a foo.lock file must be
   exclusively created.  When all operations are complete, the lock is
   released by deleting the foo.lock file.  If when attempting to create the
   lock file, it already exists and the modify time of the lock file is more
   than five minutes old (set by the PATIENCE define below), then the old
   lock file is considered stale and deleted, and the exclusive creation of
   the lock file is retried.  To assure that there are no false assessments
   of the staleness of the lock file, the operations periodically touch the
   lock file to update the modified date.

   Following is the definition of the extra field with all of the information
   required to enable the above append and compress operations and their
   recovery if interrupted.  Multi-byte values are stored little endian
   (consistent with the gzip format).  File pointers are eight bytes long.
   The crc's and lengths for the gzip trailer are four bytes long.  (Note that
   the length at the end of a gzip file is used for error checking only, and
   for large files is actually the length modulo 2^32.)  The stored block
   length is two bytes long.  The gzip extra field two-byte identification is
   "ap" for append.  It is assumed that writing the extra field to the file is
   an "atomic" operation.  That is, either all of the extra field is written
   to the file, or none of it is, if the operation is interrupted right at the
   point of updating the extra field.  This is a reasonable assumption, since
   the extra field is within the first 52 bytes of the file, which is smaller
   than any expected block size for a mass storage device (usually 512 bytes or
   larger).

   Extra field (35 bytes):
   - Pointer to first stored block length -- this points to the two-byte length
     of the first stored block, which is followed by the two-byte, one's
     complement of that length.  The stored block length is preceded by the
     three-bit header of the stored block, which is the actual start of the
     stored block in the deflate format.  See the bit offset field below.
   - Pointer to the last stored block length.  This is the same as above, but
     for the last stored block of the uncompressed data in the gzip file.
     Initially this is the same as the first stored block length pointer.
     When the stored block gets to 16K (see the MAX_STORE define), then a new
     stored block as added, at which point the last stored block length pointer
     is different from the first stored block length pointer.  When they are
     different, the first bit of the last stored block header is eight bits, or
     one byte back from the block length.
   - Compressed data crc and length.  This is the crc and length of the data
     that is in the compressed portion of the deflate stream.  These are used
     only in the event that the foo.add file containing the data to compress is
     lost after a compress operation is interrupted.
   - Total data crc and length.  This is the crc and length of all of the data
     stored in the gzip file, compressed and uncompressed.  It is used to
     reconstruct the gzip trailer when compressing, as well as when recovering
     interrupted operations.
   - Final stored block length.  This is used to quickly find where to append,
     and allows the restoration of the original final stored block state when
     an append operation is interrupted.
   - First stored block start as the number of bits back from the final stored
     block first length byte.  This value is in the range of 3..10, and is
     stored as the low three bits of the final byte of the extra field after
     subtracting three (0..7).  This allows the last-block bit of the stored
     block header to be updated when a new stored block is added, for the case
     when the first stored block and the last stored block are the same.  (When
     they are different, the numbers of bits back is known to be eight.)  This
     also allows for new compressed data to be appended to the old compressed
     data in the compress operation, overwriting the previous first stored
     block, or for the compressed data to be terminated and a valid gzip file
     reconstructed on the off chance that a compression operation was
     interrupted and the data to compress in the foo.add file was deleted.
   - The operation in process.  This is the next two bits in the last byte (the
     bits under the mask 0x18).  The are interpreted as 0: nothing in process,
     1: append in process, 2: compress in process, 3: replace in process.
   - The top three bits of the last byte in the extra field are reserved and
     are currently set to zero.

   Main procedure:
   - Exclusively create the foo.lock file using the O_CREAT and O_EXCL modes of
     the system open() call.  If the modify time of an existing lock file is
     more than PATIENCE seconds old, then the lock file is deleted and the
     exclusive create is retried.
   - Load the extra field from the foo.gz file, and see if an operation was in
     progress but not completed.  If so, apply the recovery procedure below.
   - Perform the append procedure with the provided data.
   - If the uncompressed data in the foo.gz file is 1MB or more, apply the
     compress procedure.
   - Delete the foo.lock file.

   Append procedure:
   - Put what to append in the foo.add file so that the operation can be
     restarted if this procedure is interrupted.
   - Mark the foo.gz extra field with the append operation in progress.
   + Restore the original last-block bit and stored block length of the last
     stored block from the information in the extra field, in case a previous
     append operation was interrupted.
   - Append the provided data to the last stored block, creating new stored
     blocks as needed and updating the stored blocks last-block bits and
     lengths.
   - Update the crc and length with the new data, and write the gzip trailer.
   - Write over the extra field (with a single write operation) with the new
     pointers, lengths, and crc's, and mark the gzip file as not in process.
     Though there is still a foo.add file, it will be ignored since nothing
     is in process.  If a foo.add file is leftover from a previously
     completed operation, it is truncated when writing new data to it.
   - Delete the foo.add file.

   Compress and replace procedures:
   - Read all of the uncompressed data in the stored blocks in foo.gz and write
     it to foo.add.  Also write foo.temp with the last 32K of that data to
     provide a dictionary for the next invocation of this procedure.
   - Rewrite the extra field marking foo.gz with a compression in process.
   * If there is no data provided to compress (due to a missing foo.add file
     when recovering), reconstruct and truncate the foo.gz file to contain
     only the previous compressed data and proceed to the step after the next
     one.  Otherwise ...
   - Compress the data with the dictionary in foo.dict, and write to the
     foo.gz file starting at the bit immediately following the last previously
     compressed block.  If there is no foo.dict, proceed anyway with the
     compression at slightly reduced efficiency.  (For the foo.dict file to be
     missing requires some external failure beyond simply the interruption of
     a compress operation.)  During this process, the foo.lock file is
     periodically touched to assure that that file is not considered stale by
     another process before we're done.  The deflation is terminated with a
     non-last empty static block (10 bits long), that is then located and
     written over by a last-bit-set empty stored block.
   - Append the crc and length of the data in the gzip file (previously
     calculated during the append operations).
   - Write over the extra field with the updated stored block offsets, bits
     back, crc's, and lengths, and mark foo.gz as in process for a replacement
     of the dictionary.
   @ Delete the foo.add file.
   - Replace foo.dict with foo.temp.
   - Write over the extra field, marking foo.gz as complete.

   Recovery procedure:
   - If not a replace recovery, read in the foo.add file, and provide that data
     to the appropriate recovery below.  If there is no foo.add file, provide
     a zero data length to the recovery.  In that case, the append recovery
     restores the foo.gz to the previous compressed + uncompressed data state.
     For the compress recovery, a missing foo.add file results in foo.gz being
     restored to the previous compressed-only data state.
   - Append recovery:
     - Pick up append at + step above
   - Compress recovery:
     - Pick up compress at * step above
   - Replace recovery:
     - Pick up compress at @ step above
   - Log the repair with a date stamp in foo.repairs
 */

#include <sys/types.h>
#include <stdio.h>      /* rename, fopen, fprintf, fclose */
#include <stdlib.h>     /* malloc, free */
#include <string.h>     /* strlen, strrchr, strcpy, strncpy, strcmp */
#include <fcntl.h>      /* open */
#include <unistd.h>     /* lseek, read, write, close, unlink, sleep, */
                        /* ftruncate, fsync */
#include <errno.h>      /* errno */
#include <time.h>       /* time, ctime */
#include <sys/stat.h>   /* stat */
#include <sys/time.h>   /* utimes */
#include "zlib.h"       /* crc32 */

#include "gzlog.h"      /* header for external access */

#define local static
typedef unsigned int uint;
typedef unsigned long ulong;

/* Macro for debugging to deterministically force recovery operations */
#ifdef GZLOG_DEBUG
    #include <setjmp.h>         /* longjmp */
    jmp_buf gzlog_jump;         /* where to go back to */
    int gzlog_bail = 0;         /* which point to bail at (1..8) */
    int gzlog_count = -1;       /* number of times through to wait */
#   define BAIL(n) do { if (n == gzlog_bail && gzlog_count-- == 0) \
                            longjmp(gzlog_jump, gzlog_bail); } while (0)
#else
#   define BAIL(n)
#endif

/* how old the lock file can be in seconds before considering it stale */
#define PATIENCE 300

/* maximum stored block size in Kbytes -- must be in 1..63 */
#define MAX_STORE 16

/* number of stored Kbytes to trigger compression (must be >= 32 to allow
   dictionary construction, and <= 204 * MAX_STORE, in order for >> 10 to
   discard the stored block headers contribution of five bytes each) */
#define TRIGGER 1024

/* size of a deflate dictionary (this cannot be changed) */
#define DICT 32768U

/* values for the operation (2 bits) */
#define NO_OP 0
#define APPEND_OP 1
#define COMPRESS_OP 2
#define REPLACE_OP 3

/* macros to extract little-endian integers from an unsigned byte buffer */
#define PULL2(p) ((p)[0]+((uint)((p)[1])<<8))
#define PULL4(p) (PULL2(p)+((ulong)PULL2(p+2)<<16))
#define PULL8(p) (PULL4(p)+((off_t)PULL4(p+4)<<32))

/* macros to store integers into a byte buffer in little-endian order */
#define PUT2(p,a) do {(p)[0]=a;(p)[1]=(a)>>8;} while(0)
#define PUT4(p,a) do {PUT2(p,a);PUT2(p+2,a>>16);} while(0)
#define PUT8(p,a) do {PUT4(p,a);PUT4(p+4,a>>32);} while(0)

/* internal structure for log information */
#define LOGID "\106\035\172"    /* should be three non-zero characters */
struct log {
    char id[4];     /* contains LOGID to detect inadvertent overwrites */
    int fd;         /* file descriptor for .gz file, opened read/write */
    char *path;     /* allocated path, e.g. "/var/log/foo" or "foo" */
    char *end;      /* end of path, for appending suffices such as ".gz" */
    off_t first;    /* offset of first stored block first length byte */
    int back;       /* location of first block id in bits back from first */
    uint stored;    /* bytes currently in last stored block */
    off_t last;     /* offset of last stored block first length byte */
    ulong ccrc;     /* crc of compressed data */
    ulong clen;     /* length (modulo 2^32) of compressed data */
    ulong tcrc;     /* crc of total data */
    ulong tlen;     /* length (modulo 2^32) of total data */
    time_t lock;    /* last modify time of our lock file */
};

/* gzip header for gzlog */
local unsigned char log_gzhead[] = {
    0x1f, 0x8b,                 /* magic gzip id */
    8,                          /* compression method is deflate */
    4,                          /* there is an extra field (no file name) */
    0, 0, 0, 0,                 /* no modification time provided */
    0, 0xff,                    /* no extra flags, no OS specified */
    39, 0, 'a', 'p', 35, 0      /* extra field with "ap" subfield */
                                /* 35 is EXTRA, 39 is EXTRA + 4 */
};

#define HEAD sizeof(log_gzhead)     /* should be 16 */

/* initial gzip extra field content (52 == HEAD + EXTRA + 1) */
local unsigned char log_gzext[] = {
    52, 0, 0, 0, 0, 0, 0, 0,    /* offset of first stored block length */
    52, 0, 0, 0, 0, 0, 0, 0,    /* offset of last stored block length */
    0, 0, 0, 0, 0, 0, 0, 0,     /* compressed data crc and length */
    0, 0, 0, 0, 0, 0, 0, 0,     /* total data crc and length */
    0, 0,                       /* final stored block data length */
    5                           /* op is NO_OP, last bit 8 bits back */
};

#define EXTRA sizeof(log_gzext)     /* should be 35 */

/* initial gzip data and trailer */
local unsigned char log_gzbody[] = {
    1, 0, 0, 0xff, 0xff,        /* empty stored block (last) */
    0, 0, 0, 0,                 /* crc */
    0, 0, 0, 0                  /* uncompressed length */
};

#define BODY sizeof(log_gzbody)

/* Exclusively create foo.lock in order to negotiate exclusive access to the
   foo.* files.  If the modify time of an existing lock file is greater than
   PATIENCE seconds in the past, then consider the lock file to have been
   abandoned, delete it, and try the exclusive create again.  Save the lock
   file modify time for verification of ownership.  Return 0 on success, or -1
   on failure, usually due to an access restriction or invalid path.  Note that
   if stat() or unlink() fails, it may be due to another process noticing the
   abandoned lock file a smidge sooner and deleting it, so those are not
   flagged as an error. */
local int log_lock(struct log *log)
{
    int fd;
    struct stat st;

    strcpy(log->end, ".lock");
    while ((fd = open(log->path, O_CREAT | O_EXCL, 0644)) < 0) {
        if (errno != EEXIST)
            return -1;
        if (stat(log->path, &st) == 0 && time(NULL) - st.st_mtime > PATIENCE) {
            unlink(log->path);
            continue;
        }
        sleep(2);       /* relinquish the CPU for two seconds while waiting */
    }
    close(fd);
    if (stat(log->path, &st) == 0)
        log->lock = st.st_mtime;
    return 0;
}

/* Update the modify time of the lock file to now, in order to prevent another
   task from thinking that the lock is stale.  Save the lock file modify time
   for verification of ownership. */
local void log_touch(struct log *log)
{
    struct stat st;

    strcpy(log->end, ".lock");
    utimes(log->path, NULL);
    if (stat(log->path, &st) == 0)
        log->lock = st.st_mtime;
}

/* Check the log file modify time against what is expected.  Return true if
   this is not our lock.  If it is our lock, touch it to keep it. */
local int log_check(struct log *log)
{
    struct stat st;

    strcpy(log->end, ".lock");
    if (stat(log->path, &st) || st.st_mtime != log->lock)
        return 1;
    log_touch(log);
    return 0;
}

/* Unlock a previously acquired lock, but only if it's ours. */
local void log_unlock(struct log *log)
{
    if (log_check(log))
        return;
    strcpy(log->end, ".lock");
    unlink(log->path);
    log->lock = 0;
}

/* Check the gzip header and read in the extra field, filling in the values in
   the log structure.  Return op on success or -1 if the gzip header was not as
   expected.  op is the current operation in progress last written to the extra
   field.  This assumes that the gzip file has already been opened, with the
   file descriptor log->fd. */
local int log_head(struct log *log)
{
    int op;
    unsigned char buf[HEAD + EXTRA];

    if (lseek(log->fd, 0, SEEK_SET) < 0 ||
        read(log->fd, buf, HEAD + EXTRA) != HEAD + EXTRA ||
        memcmp(buf, log_gzhead, HEAD)) {
        return -1;
    }
    log->first = PULL8(buf + HEAD);
    log->last = PULL8(buf + HEAD + 8);
    log->ccrc = PULL4(buf + HEAD + 16);
    log->clen = PULL4(buf + HEAD + 20);
    log->tcrc = PULL4(buf + HEAD + 24);
    log->tlen = PULL4(buf + HEAD + 28);
    log->stored = PULL2(buf + HEAD + 32);
    log->back = 3 + (buf[HEAD + 34] & 7);
    op = (buf[HEAD + 34] >> 3) & 3;
    return op;
}

/* Write over the extra field contents, marking the operation as op.  Use fsync
   to assure that the device is written to, and in the requested order.  This
   operation, and only this operation, is assumed to be atomic in order to
   assure that the log is recoverable in the event of an interruption at any
   point in the process.  Return -1 if the write to foo.gz failed. */
local int log_mark(struct log *log, int op)
{
    int ret;
    unsigned char ext[EXTRA];

    PUT8(ext, log->first);
    PUT8(ext + 8, log->last);
    PUT4(ext + 16, log->ccrc);
    PUT4(ext + 20, log->clen);
    PUT4(ext + 24, log->tcrc);
    PUT4(ext + 28, log->tlen);
    PUT2(ext + 32, log->stored);
    ext[34] = log->back - 3 + (op << 3);
    fsync(log->fd);
    ret = lseek(log->fd, HEAD, SEEK_SET) < 0 ||
          write(log->fd, ext, EXTRA) != EXTRA ? -1 : 0;
    fsync(log->fd);
    return ret;
}

/* Rewrite the last block header bits and subsequent zero bits to get to a byte
   boundary, setting the last block bit if last is true, and then write the
   remainder of the stored block header (length and one's complement).  Leave
   the file pointer after the end of the last stored block data.  Return -1 if
   there is a read or write failure on the foo.gz file */
local int log_last(struct log *log, int last)
{
    int back, len, mask;
    unsigned char buf[6];

    /* determine the locations of the bytes and bits to modify */
    back = log->last == log->first ? log->back : 8;
    len = back > 8 ? 2 : 1;                 /* bytes back from log->last */
    mask = 0x80 >> ((back - 1) & 7);        /* mask for block last-bit */

    /* get the byte to modify (one or two back) into buf[0] -- don't need to
       read the byte if the last-bit is eight bits back, since in that case
       the entire byte will be modified */
    buf[0] = 0;
    if (back != 8 && (lseek(log->fd, log->last - len, SEEK_SET) < 0 ||
                      read(log->fd, buf, 1) != 1))
        return -1;

    /* change the last-bit of the last stored block as requested -- note
       that all bits above the last-bit are set to zero, per the type bits
       of a stored block being 00 and per the convention that the bits to
       bring the stream to a byte boundary are also zeros */
    buf[1] = 0;
    buf[2 - len] = (*buf & (mask - 1)) + (last ? mask : 0);

    /* write the modified stored block header and lengths, move the file
       pointer to after the last stored block data */
    PUT2(buf + 2, log->stored);
    PUT2(buf + 4, log->stored ^ 0xffff);
    return lseek(log->fd, log->last - len, SEEK_SET) < 0 ||
           write(log->fd, buf + 2 - len, len + 4) != len + 4 ||
           lseek(log->fd, log->stored, SEEK_CUR) < 0 ? -1 : 0;
}

/* Append len bytes from data to the locked and open log file.  len may be zero
   if recovering and no .add file was found.  In that case, the previous state
   of the foo.gz file is restored.  The data is appended uncompressed in
   deflate stored blocks.  Return -1 if there was an error reading or writing
   the foo.gz file. */
local int log_append(struct log *log, unsigned char *data, size_t len)
{
    uint put;
    off_t end;
    unsigned char buf[8];

    /* set the last block last-bit and length, in case recovering an
       interrupted append, then position the file pointer to append to the
       block */
    if (log_last(log, 1))
        return -1;

    /* append, adding stored blocks and updating the offset of the last stored
       block as needed, and update the total crc and length */
    while (len) {
        /* append as much as we can to the last block */
        put = (MAX_STORE << 10) - log->stored;
        if (put > len)
            put = (uint)len;
        if (put) {
            if (write(log->fd, data, put) != put)
                return -1;
            BAIL(1);
            log->tcrc = crc32(log->tcrc, data, put);
            log->tlen += put;
            log->stored += put;
            data += put;
            len -= put;
        }

        /* if we need to, add a new empty stored block */
        if (len) {
            /* mark current block as not last */
            if (log_last(log, 0))
                return -1;

            /* point to new, empty stored block */
            log->last += 4 + log->stored + 1;
            log->stored = 0;
        }

        /* mark last block as last, update its length */
        if (log_last(log, 1))
            return -1;
        BAIL(2);
    }

    /* write the new crc and length trailer, and truncate just in case (could
       be recovering from partial append with a missing foo.add file) */
    PUT4(buf, log->tcrc);
    PUT4(buf + 4, log->tlen);
    if (write(log->fd, buf, 8) != 8 ||
        (end = lseek(log->fd, 0, SEEK_CUR)) < 0 || ftruncate(log->fd, end))
        return -1;

    /* write the extra field, marking the log file as done, delete .add file */
    if (log_mark(log, NO_OP))
        return -1;
    strcpy(log->end, ".add");
    unlink(log->path);          /* ignore error, since may not exist */
    return 0;
}

/* Replace the foo.dict file with the foo.temp file.  Also delete the foo.add
   file, since the compress operation may have been interrupted before that was
   done.  Returns 1 if memory could not be allocated, or -1 if reading or
   writing foo.gz fails, or if the rename fails for some reason other than
   foo.temp not existing.  foo.temp not existing is a permitted error, since
   the replace operation may have been interrupted after the rename is done,
   but before foo.gz is marked as complete. */
local int log_replace(struct log *log)
{
    int ret;
    char *dest;

    /* delete foo.add file */
    strcpy(log->end, ".add");
    unlink(log->path);         /* ignore error, since may not exist */
    BAIL(3);

    /* rename foo.name to foo.dict, replacing foo.dict if it exists */
    strcpy(log->end, ".dict");
    dest = malloc(strlen(log->path) + 1);
    if (dest == NULL)
        return -2;
    strcpy(dest, log->path);
    strcpy(log->end, ".temp");
    ret = rename(log->path, dest);
    free(dest);
    if (ret && errno != ENOENT)
        return -1;
    BAIL(4);

    /* mark the foo.gz file as done */
    return log_mark(log, NO_OP);
}

/* Compress the len bytes at data and append the compressed data to the
   foo.gz deflate data immediately after the previous compressed data.  This
   overwrites the previous uncompressed data, which was stored in foo.add
   and is the data provided in data[0..len-1].  If this operation is
   interrupted, it picks up at the start of this routine, with the foo.add
   file read in again.  If there is no data to compress (len == 0), then we
   simply terminate the foo.gz file after the previously compressed data,
   appending a final empty stored block and the gzip trailer.  Return -1 if
   reading or writing the log.gz file failed, or -2 if there was a memory
   allocation failure. */
local int log_compress(struct log *log, unsigned char *data, size_t len)
{
    int fd;
    uint got, max;
    ssize_t dict;
    off_t end;
    z_stream strm;
    unsigned char buf[DICT];

    /* compress and append compressed data */
    if (len) {
        /* set up for deflate, allocating memory */
        strm.zalloc = Z_NULL;
        strm.zfree = Z_NULL;
        strm.opaque = Z_NULL;
        if (deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -15, 8,
                         Z_DEFAULT_STRATEGY) != Z_OK)
            return -2;

        /* read in dictionary (last 32K of data that was compressed) */
        strcpy(log->end, ".dict");
        fd = open(log->path, O_RDONLY, 0);
        if (fd >= 0) {
            dict = read(fd, buf, DICT);
            close(fd);
            if (dict < 0) {
                deflateEnd(&strm);
                return -1;
            }
            if (dict)
                deflateSetDictionary(&strm, buf, (uint)dict);
        }
        log_touch(log);

        /* prime deflate with last bits of previous block, position write
           pointer to write those bits and overwrite what follows */
        if (lseek(log->fd, log->first - (log->back > 8 ? 2 : 1),
                SEEK_SET) < 0 ||
            read(log->fd, buf, 1) != 1 || lseek(log->fd, -1, SEEK_CUR) < 0) {
            deflateEnd(&strm);
            return -1;
        }
        deflatePrime(&strm, (8 - log->back) & 7, *buf);

        /* compress, finishing with a partial non-last empty static block */
        strm.next_in = data;
        max = (((uint)0 - 1) >> 1) + 1; /* in case int smaller than size_t */
        do {
            strm.avail_in = len > max ? max : (uint)len;
            len -= strm.avail_in;
            do {
                strm.avail_out = DICT;
                strm.next_out = buf;
                deflate(&strm, len ? Z_NO_FLUSH : Z_PARTIAL_FLUSH);
                got = DICT - strm.avail_out;
                if (got && write(log->fd, buf, got) != got) {
                    deflateEnd(&strm);
                    return -1;
                }
                log_touch(log);
            } while (strm.avail_out == 0);
        } while (len);
        deflateEnd(&strm);
        BAIL(5);

        /* find start of empty static block -- scanning backwards the first one
           bit is the second bit of the block, if the last byte is zero, then
           we know the byte before that has a one in the top bit, since an
           empty static block is ten bits long */
        if ((log->first = lseek(log->fd, -1, SEEK_CUR)) < 0 ||
            read(log->fd, buf, 1) != 1)
            return -1;
        log->first++;
        if (*buf) {
            log->back = 1;
            while ((*buf & ((uint)1 << (8 - log->back++))) == 0)
                ;       /* guaranteed to terminate, since *buf != 0 */
        }
        else
            log->back = 10;

        /* update compressed crc and length */
        log->ccrc = log->tcrc;
        log->clen = log->tlen;
    }
    else {
        /* no data to compress -- fix up existing gzip stream */
        log->tcrc = log->ccrc;
        log->tlen = log->clen;
    }

    /* complete and truncate gzip stream */
    log->last = log->first;
    log->stored = 0;
    PUT4(buf, log->tcrc);
    PUT4(buf + 4, log->tlen);
    if (log_last(log, 1) || write(log->fd, buf, 8) != 8 ||
        (end = lseek(log->fd, 0, SEEK_CUR)) < 0 || ftruncate(log->fd, end))
        return -1;
    BAIL(6);

    /* mark as being in the replace operation */
    if (log_mark(log, REPLACE_OP))
        return -1;

    /* execute the replace operation and mark the file as done */
    return log_replace(log);
}

/* log a repair record to the .repairs file */
local void log_log(struct log *log, int op, char *record)
{
    time_t now;
    FILE *rec;

    now = time(NULL);
    strcpy(log->end, ".repairs");
    rec = fopen(log->path, "a");
    if (rec == NULL)
        return;
    fprintf(rec, "%.24s %s recovery: %s\n", ctime(&now), op == APPEND_OP ?
            "append" : (op == COMPRESS_OP ? "compress" : "replace"), record);
    fclose(rec);
    return;
}

/* Recover the interrupted operation op.  First read foo.add for recovering an
   append or compress operation.  Return -1 if there was an error reading or
   writing foo.gz or reading an existing foo.add, or -2 if there was a memory
   allocation failure. */
local int log_recover(struct log *log, int op)
{
    int fd, ret = 0;
    unsigned char *data = NULL;
    size_t len = 0;
    struct stat st;

    /* log recovery */
    log_log(log, op, "start");

    /* load foo.add file if expected and present */
    if (op == APPEND_OP || op == COMPRESS_OP) {
        strcpy(log->end, ".add");
        if (stat(log->path, &st) == 0 && st.st_size) {
            len = (size_t)(st.st_size);
            if ((off_t)len != st.st_size ||
                    (data = malloc(st.st_size)) == NULL) {
                log_log(log, op, "allocation failure");
                return -2;
            }
            if ((fd = open(log->path, O_RDONLY, 0)) < 0) {
                free(data);
                log_log(log, op, ".add file read failure");
                return -1;
            }
            ret = (size_t)read(fd, data, len) != len;
            close(fd);
            if (ret) {
                free(data);
                log_log(log, op, ".add file read failure");
                return -1;
            }
            log_log(log, op, "loaded .add file");
        }
        else
            log_log(log, op, "missing .add file!");
    }

    /* recover the interrupted operation */
    switch (op) {
    case APPEND_OP:
        ret = log_append(log, data, len);
        break;
    case COMPRESS_OP:
        ret = log_compress(log, data, len);
        break;
    case REPLACE_OP:
        ret = log_replace(log);
    }

    /* log status */
    log_log(log, op, ret ? "failure" : "complete");

    /* clean up */
    if (data != NULL)
        free(data);
    return ret;
}

/* Close the foo.gz file (if open) and release the lock. */
local void log_close(struct log *log)
{
    if (log->fd >= 0)
        close(log->fd);
    log->fd = -1;
    log_unlock(log);
}

/* Open foo.gz, verify the header, and load the extra field contents, after
   first creating the foo.lock file to gain exclusive access to the foo.*
   files.  If foo.gz does not exist or is empty, then write the initial header,
   extra, and body content of an empty foo.gz log file.  If there is an error
   creating the lock file due to access restrictions, or an error reading or
   writing the foo.gz file, or if the foo.gz file is not a proper log file for
   this object (e.g. not a gzip file or does not contain the expected extra
   field), then return true.  If there is an error, the lock is released.
   Otherwise, the lock is left in place. */
local int log_open(struct log *log)
{
    int op;

    /* release open file resource if left over -- can occur if lock lost
       between gzlog_open() and gzlog_write() */
    if (log->fd >= 0)
        close(log->fd);
    log->fd = -1;

    /* negotiate exclusive access */
    if (log_lock(log) < 0)
        return -1;

    /* open the log file, foo.gz */
    strcpy(log->end, ".gz");
    log->fd = open(log->path, O_RDWR | O_CREAT, 0644);
    if (log->fd < 0) {
        log_close(log);
        return -1;
    }

    /* if new, initialize foo.gz with an empty log, delete old dictionary */
    if (lseek(log->fd, 0, SEEK_END) == 0) {
        if (write(log->fd, log_gzhead, HEAD) != HEAD ||
            write(log->fd, log_gzext, EXTRA) != EXTRA ||
            write(log->fd, log_gzbody, BODY) != BODY) {
            log_close(log);
            return -1;
        }
        strcpy(log->end, ".dict");
        unlink(log->path);
    }

    /* verify log file and load extra field information */
    if ((op = log_head(log)) < 0) {
        log_close(log);
        return -1;
    }

    /* check for interrupted process and if so, recover */
    if (op != NO_OP && log_recover(log, op)) {
        log_close(log);
        return -1;
    }

    /* touch the lock file to prevent another process from grabbing it */
    log_touch(log);
    return 0;
}

/* See gzlog.h for the description of the external methods below */
gzlog *gzlog_open(char *path)
{
    size_t n;
    struct log *log;

    /* check arguments */
    if (path == NULL || *path == 0)
        return NULL;

    /* allocate and initialize log structure */
    log = malloc(sizeof(struct log));
    if (log == NULL)
        return NULL;
    strcpy(log->id, LOGID);
    log->fd = -1;

    /* save path and end of path for name construction */
    n = strlen(path);
    log->path = malloc(n + 9);              /* allow for ".repairs" */
    if (log->path == NULL) {
        free(log);
        return NULL;
    }
    strcpy(log->path, path);
    log->end = log->path + n;

    /* gain exclusive access and verify log file -- may perform a
       recovery operation if needed */
    if (log_open(log)) {
        free(log->path);
        free(log);
        return NULL;
    }

    /* return pointer to log structure */
    return log;
}

/* gzlog_compress() return values:
    0: all good
   -1: file i/o error (usually access issue)
   -2: memory allocation failure
   -3: invalid log pointer argument */
int gzlog_compress(gzlog *logd)
{
    int fd, ret;
    uint block;
    size_t len, next;
    unsigned char *data, buf[5];
    struct log *log = logd;

    /* check arguments */
    if (log == NULL || strcmp(log->id, LOGID))
        return -3;

    /* see if we lost the lock -- if so get it again and reload the extra
       field information (it probably changed), recover last operation if
       necessary */
    if (log_check(log) && log_open(log))
        return -1;

    /* create space for uncompressed data */
    len = ((size_t)(log->last - log->first) & ~(((size_t)1 << 10) - 1)) +
          log->stored;
    if ((data = malloc(len)) == NULL)
        return -2;

    /* do statement here is just a cheap trick for error handling */
    do {
        /* read in the uncompressed data */
        if (lseek(log->fd, log->first - 1, SEEK_SET) < 0)
            break;
        next = 0;
        while (next < len) {
            if (read(log->fd, buf, 5) != 5)
                break;
            block = PULL2(buf + 1);
            if (next + block > len ||
                read(log->fd, (char *)data + next, block) != block)
                break;
            next += block;
        }
        if (lseek(log->fd, 0, SEEK_CUR) != log->last + 4 + log->stored)
            break;
        log_touch(log);

        /* write the uncompressed data to the .add file */
        strcpy(log->end, ".add");
        fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
        if (fd < 0)
            break;
        ret = (size_t)write(fd, data, len) != len;
        if (ret | close(fd))
            break;
        log_touch(log);

        /* write the dictionary for the next compress to the .temp file */
        strcpy(log->end, ".temp");
        fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
        if (fd < 0)
            break;
        next = DICT > len ? len : DICT;
        ret = (size_t)write(fd, (char *)data + len - next, next) != next;
        if (ret | close(fd))
            break;
        log_touch(log);

        /* roll back to compressed data, mark the compress in progress */
        log->last = log->first;
        log->stored = 0;
        if (log_mark(log, COMPRESS_OP))
            break;
        BAIL(7);

        /* compress and append the data (clears mark) */
        ret = log_compress(log, data, len);
        free(data);
        return ret;
    } while (0);

    /* broke out of do above on i/o error */
    free(data);
    return -1;
}

/* gzlog_write() return values:
    0: all good
   -1: file i/o error (usually access issue)
   -2: memory allocation failure
   -3: invalid log pointer argument */
int gzlog_write(gzlog *logd, void *data, size_t len)
{
    int fd, ret;
    struct log *log = logd;

    /* check arguments */
    if (log == NULL || strcmp(log->id, LOGID))
        return -3;
    if (data == NULL || len <= 0)
        return 0;

    /* see if we lost the lock -- if so get it again and reload the extra
       field information (it probably changed), recover last operation if
       necessary */
    if (log_check(log) && log_open(log))
        return -1;

    /* create and write .add file */
    strcpy(log->end, ".add");
    fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
    if (fd < 0)
        return -1;
    ret = (size_t)write(fd, data, len) != len;
    if (ret | close(fd))
        return -1;
    log_touch(log);

    /* mark log file with append in progress */
    if (log_mark(log, APPEND_OP))
        return -1;
    BAIL(8);

    /* append data (clears mark) */
    if (log_append(log, data, len))
        return -1;

    /* check to see if it's time to compress -- if not, then done */
    if (((log->last - log->first) >> 10) + (log->stored >> 10) < TRIGGER)
        return 0;

    /* time to compress */
    return gzlog_compress(log);
}

/* gzlog_close() return values:
    0: ok
   -3: invalid log pointer argument */
int gzlog_close(gzlog *logd)
{
    struct log *log = logd;

    /* check arguments */
    if (log == NULL || strcmp(log->id, LOGID))
        return -3;

    /* close the log file and release the lock */
    log_close(log);

    /* free structure and return */
    if (log->path != NULL)
        free(log->path);
    strcpy(log->id, "bad");
    free(log);
    return 0;
}
Added compat/zlib/examples/gzlog.h.



























































































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/* gzlog.h
  Copyright (C) 2004, 2008, 2012 Mark Adler, all rights reserved
  version 2.2, 14 Aug 2012

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the author be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Mark Adler    madler@alumni.caltech.edu
 */

/* Version History:
   1.0  26 Nov 2004  First version
   2.0  25 Apr 2008  Complete redesign for recovery of interrupted operations
                     Interface changed slightly in that now path is a prefix
                     Compression now occurs as needed during gzlog_write()
                     gzlog_write() now always leaves the log file as valid gzip
   2.1   8 Jul 2012  Fix argument checks in gzlog_compress() and gzlog_write()
   2.2  14 Aug 2012  Clean up signed comparisons
 */

/*
   The gzlog object allows writing short messages to a gzipped log file,
   opening the log file locked for small bursts, and then closing it.  The log
   object works by appending stored (uncompressed) data to the gzip file until
   1 MB has been accumulated.  At that time, the stored data is compressed, and
   replaces the uncompressed data in the file.  The log file is truncated to
   its new size at that time.  After each write operation, the log file is a
   valid gzip file that can decompressed to recover what was written.

   The gzlog operations can be interrupted at any point due to an application or
   system crash, and the log file will be recovered the next time the log is
   opened with gzlog_open().
 */

#ifndef GZLOG_H
#define GZLOG_H

/* gzlog object type */
typedef void gzlog;

/* Open a gzlog object, creating the log file if it does not exist.  Return
   NULL on error.  Note that gzlog_open() could take a while to complete if it
   has to wait to verify that a lock is stale (possibly for five minutes), or
   if there is significant contention with other instantiations of this object
   when locking the resource.  path is the prefix of the file names created by
   this object.  If path is "foo", then the log file will be "foo.gz", and
   other auxiliary files will be created and destroyed during the process:
   "foo.dict" for a compression dictionary, "foo.temp" for a temporary (next)
   dictionary, "foo.add" for data being added or compressed, "foo.lock" for the
   lock file, and "foo.repairs" to log recovery operations performed due to
   interrupted gzlog operations.  A gzlog_open() followed by a gzlog_close()
   will recover a previously interrupted operation, if any. */
gzlog *gzlog_open(char *path);

/* Write to a gzlog object.  Return zero on success, -1 if there is a file i/o
   error on any of the gzlog files (this should not happen if gzlog_open()
   succeeded, unless the device has run out of space or leftover auxiliary
   files have permissions or ownership that prevent their use), -2 if there is
   a memory allocation failure, or -3 if the log argument is invalid (e.g. if
   it was not created by gzlog_open()).  This function will write data to the
   file uncompressed, until 1 MB has been accumulated, at which time that data
   will be compressed.  The log file will be a valid gzip file upon successful
   return. */
int gzlog_write(gzlog *log, void *data, size_t len);

/* Force compression of any uncompressed data in the log.  This should be used
   sparingly, if at all.  The main application would be when a log file will
   not be appended to again.  If this is used to compress frequently while
   appending, it will both significantly increase the execution time and
   reduce the compression ratio.  The return codes are the same as for
   gzlog_write(). */
int gzlog_compress(gzlog *log);

/* Close a gzlog object.  Return zero on success, -3 if the log argument is
   invalid.  The log object is freed, and so cannot be referenced again. */
int gzlog_close(gzlog *log);

#endif
Added compat/zlib/examples/gznorm.c.






















































































































































































































































































































































































































































































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/* gznorm.c -- normalize a gzip stream
 * Copyright (C) 2018 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 * Version 1.0  7 Oct 2018  Mark Adler */

// gznorm takes a gzip stream, potentially containing multiple members, and
// converts it to a gzip stream with a single member. In addition the gzip
// header is normalized, removing the file name and time stamp, and setting the
// other header contents (XFL, OS) to fixed values. gznorm does not recompress
// the data, so it is fast, but no advantage is gained from the history that
// could be available across member boundaries.

#include <stdio.h>      // fread, fwrite, putc, fflush, ferror, fprintf,
                        // vsnprintf, stdout, stderr, NULL, FILE
#include <stdlib.h>     // malloc, free
#include <string.h>     // strerror
#include <errno.h>      // errno
#include <stdarg.h>     // va_list, va_start, va_end
#include "zlib.h"       // inflateInit2, inflate, inflateReset, inflateEnd,
                        // z_stream, z_off_t, crc32_combine, Z_NULL, Z_BLOCK,
                        // Z_OK, Z_STREAM_END, Z_BUF_ERROR, Z_DATA_ERROR,
                        // Z_MEM_ERROR

#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
#  include <fcntl.h>
#  include <io.h>
#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#  define SET_BINARY_MODE(file)
#endif

#define local static

// printf to an allocated string. Return the string, or NULL if the printf or
// allocation fails.
local char *aprintf(char *fmt, ...) {
    // Get the length of the result of the printf.
    va_list args;
    va_start(args, fmt);
    int len = vsnprintf(NULL, 0, fmt, args);
    va_end(args);
    if (len < 0)
        return NULL;

    // Allocate the required space and printf to it.
    char *str = malloc(len + 1);
    if (str == NULL)
        return NULL;
    va_start(args, fmt);
    vsnprintf(str, len + 1, fmt, args);
    va_end(args);
    return str;
}

// Return with an error, putting an allocated error message in *err. Doing an
// inflateEnd() on an already ended state, or one with state set to Z_NULL, is
// permitted.
#define BYE(...) \
    do { \
        inflateEnd(&strm); \
        *err = aprintf(__VA_ARGS__); \
        return 1; \
    } while (0)

// Chunk size for buffered reads and for decompression. Twice this many bytes
// will be allocated on the stack by gzip_normalize(). Must fit in an unsigned.
#define CHUNK 16384

// Read a gzip stream from in and write an equivalent normalized gzip stream to
// out. If given no input, an empty gzip stream will be written. If successful,
// 0 is returned, and *err is set to NULL. On error, 1 is returned, where the
// details of the error are returned in *err, a pointer to an allocated string.
//
// The input may be a stream with multiple gzip members, which is converted to
// a single gzip member on the output. Each gzip member is decompressed at the
// level of deflate blocks. This enables clearing the last-block bit, shifting
// the compressed data to concatenate to the previous member's compressed data,
// which can end at an arbitrary bit boundary, and identifying stored blocks in
// order to resynchronize those to byte boundaries. The deflate compressed data
// is terminated with a 10-bit empty fixed block. If any members on the input
// end with a 10-bit empty fixed block, then that block is excised from the
// stream. This avoids appending empty fixed blocks for every normalization,
// and assures that gzip_normalize applied a second time will not change the
// input. The pad bits after stored block headers and after the final deflate
// block are all forced to zeros.
local int gzip_normalize(FILE *in, FILE *out, char **err) {
    // initialize the inflate engine to process a gzip member
    z_stream strm;
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    if (inflateInit2(&strm, 15 + 16) != Z_OK)
        BYE("out of memory");

    // State while processing the input gzip stream.
    enum {              // BETWEEN -> HEAD -> BLOCK -> TAIL -> BETWEEN -> ...
        BETWEEN,        // between gzip members (must end in this state)
        HEAD,           // reading a gzip header
        BLOCK,          // reading deflate blocks
        TAIL            // reading a gzip trailer
    } state = BETWEEN;              // current component being processed
    unsigned long crc = 0;          // accumulated CRC of uncompressed data
    unsigned long len = 0;          // accumulated length of uncompressed data
    unsigned long buf = 0;          // deflate stream bit buffer of num bits
    int num = 0;                    // number of bits in buf (at bottom)

    // Write a canonical gzip header (no mod time, file name, comment, extra
    // block, or extra flags, and OS is marked as unknown).
    fwrite("\x1f\x8b\x08\0\0\0\0\0\0\xff", 1, 10, out);

    // Process the gzip stream from in until reaching the end of the input,
    // encountering invalid input, or experiencing an i/o error.
    int more;                       // true if not at the end of the input
    do {
        // State inside this loop.
        unsigned char *put;         // next input buffer location to process
        int prev;                   // number of bits from previous block in
                                    // the bit buffer, or -1 if not at the
                                    // start of a block
        unsigned long long memb;    // uncompressed length of member
        size_t tail;                // number of trailer bytes read (0..8)
        unsigned long part;         // accumulated trailer component

        // Get the next chunk of input from in.
        unsigned char dat[CHUNK];
        strm.avail_in = fread(dat, 1, CHUNK, in);
        if (strm.avail_in == 0)
            break;
        more = strm.avail_in == CHUNK;
        strm.next_in = put = dat;

        // Run that chunk of input through the inflate engine to exhaustion.
        do {
            // At this point it is assured that strm.avail_in > 0.

            // Inflate until the end of a gzip component (header, deflate
            // block, trailer) is reached, or until all of the chunk is
            // consumed. The resulting decompressed data is discarded, though
            // the total size of the decompressed data in each member is
            // tracked, for the calculation of the total CRC.
            do {
                // inflate and handle any errors
                unsigned char scrap[CHUNK];
                strm.avail_out = CHUNK;
                strm.next_out = scrap;
                int ret = inflate(&strm, Z_BLOCK);
                if (ret == Z_MEM_ERROR)
                    BYE("out of memory");
                if (ret == Z_DATA_ERROR)
                    BYE("input invalid: %s", strm.msg);
                if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_STREAM_END)
                    BYE("internal error");

                // Update the number of uncompressed bytes generated in this
                // member. The actual count (not modulo 2^32) is required to
                // correctly compute the total CRC.
                unsigned got = CHUNK - strm.avail_out;
                memb += got;
                if (memb < got)
                    BYE("overflow error");

                // Continue to process this chunk until it is consumed, or
                // until the end of a component (header, deflate block, or
                // trailer) is reached.
            } while (strm.avail_out == 0 && (strm.data_type & 0x80) == 0);

            // Since strm.avail_in was > 0 for the inflate call, some input was
            // just consumed. It is therefore assured that put < strm.next_in.

            // Disposition the consumed component or part of a component.
            switch (state) {
                case BETWEEN:
                    state = HEAD;
                    // Fall through to HEAD when some or all of the header is
                    // processed.

                case HEAD:
                    // Discard the header.
                    if (strm.data_type & 0x80) {
                        // End of header reached -- deflate blocks follow.
                        put = strm.next_in;
                        prev = num;
                        memb = 0;
                        state = BLOCK;
                    }
                    break;

                case BLOCK:
                    // Copy the deflate stream to the output, but with the
                    // last-block-bit cleared. Re-synchronize stored block
                    // headers to the output byte boundaries. The bytes at
                    // put..strm.next_in-1 is the compressed data that has been
                    // processed and is ready to be copied to the output.

                    // At this point, it is assured that new compressed data is
                    // available, i.e., put < strm.next_in. If prev is -1, then
                    // that compressed data starts in the middle of a deflate
                    // block. If prev is not -1, then the bits in the bit
                    // buffer, possibly combined with the bits in *put, contain
                    // the three-bit header of the new deflate block. In that
                    // case, prev is the number of bits from the previous block
                    // that remain in the bit buffer. Since num is the number
                    // of bits in the bit buffer, we have that num - prev is
                    // the number of bits from the new block currently in the
                    // bit buffer.

                    // If strm.data_type & 0xc0 is 0x80, then the last byte of
                    // the available compressed data includes the last bits of
                    // the end of a deflate block. In that case, that last byte
                    // also has strm.data_type & 0x1f bits of the next deflate
                    // block, in the range 0..7. If strm.data_type & 0xc0 is
                    // 0xc0, then the last byte of the compressed data is the
                    // end of the deflate stream, followed by strm.data_type &
                    // 0x1f pad bits, also in the range 0..7.

                    // Set bits to the number of bits not yet consumed from the
                    // last byte. If we are at the end of the block, bits is
                    // either the number of bits in the last byte belonging to
                    // the next block, or the number of pad bits after the
                    // final block. In either of those cases, bits is in the
                    // range 0..7.
                    ;                   // (required due to C syntax oddity)
                    int bits = strm.data_type & 0x1f;

                    if (prev != -1) {
                        // We are at the start of a new block. Clear the last
                        // block bit, and check for special cases. If it is a
                        // stored block, then emit the header and pad to the
                        // next byte boundary. If it is a final, empty fixed
                        // block, then excise it.

                        // Some or all of the three header bits for this block
                        // may already be in the bit buffer. Load any remaining
                        // header bits into the bit buffer.
                        if (num - prev < 3) {
                            buf += (unsigned long)*put++ << num;
                            num += 8;
                        }

                        // Set last to have a 1 in the position of the last
                        // block bit in the bit buffer.
                        unsigned long last = (unsigned long)1 << prev;

                        if (((buf >> prev) & 7) == 3) {
                            // This is a final fixed block. Load at least ten
                            // bits from this block, including the header, into
                            // the bit buffer. We already have at least three,
                            // so at most one more byte needs to be loaded.
                            if (num - prev < 10) {
                                if (put == strm.next_in)
                                    // Need to go get and process more input.
                                    // We'll end up back here to finish this.
                                    break;
                                buf += (unsigned long)*put++ << num;
                                num += 8;
                            }
                            if (((buf >> prev) & 0x3ff) == 3) {
                                // That final fixed block is empty. Delete it
                                // to avoid adding an empty block every time a
                                // gzip stream is normalized.
                                num = prev;
                                buf &= last - 1;    // zero the pad bits
                            }
                        }
                        else if (((buf >> prev) & 6) == 0) {
                            // This is a stored block. Flush to the next
                            // byte boundary after the three-bit header.
                            num = (prev + 10) & ~7;
                            buf &= last - 1;        // zero the pad bits
                        }

                        // Clear the last block bit.
                        buf &= ~last;

                        // Write out complete bytes in the bit buffer.
                        while (num >= 8) {
                            putc(buf, out);
                            buf >>= 8;
                            num -= 8;
                        }

                        // If no more bytes left to process, then we have
                        // consumed the byte that had bits from the next block.
                        if (put == strm.next_in)
                            bits = 0;
                    }

                    // We are done handling the deflate block header. Now copy
                    // all or almost all of the remaining compressed data that
                    // has been processed so far. Don't copy one byte at the
                    // end if it contains bits from the next deflate block or
                    // pad bits at the end of a deflate block.

                    // mix is 1 if we are at the end of a deflate block, and if
                    // some of the bits in the last byte follow this block. mix
                    // is 0 if we are in the middle of a deflate block, if the
                    // deflate block ended on a byte boundary, or if all of the
                    // compressed data processed so far has been consumed.
                    int mix = (strm.data_type & 0x80) && bits;

                    // Copy all of the processed compressed data to the output,
                    // except for the last byte if it contains bits from the
                    // next deflate block or pad bits at the end of the deflate
                    // stream. Copy the data after shifting in num bits from
                    // buf in front of it, leaving num bits from the end of the
                    // compressed data in buf when done.
                    unsigned char *end = strm.next_in - mix;
                    if (put < end) {
                        if (num)
                            // Insert num bits from buf before the data being
                            // copied.
                            do {
                                buf += (unsigned)(*put++) << num;
                                putc(buf, out);
                                buf >>= 8;
                            } while (put < end);
                        else {
                            // No shifting needed -- write directly.
                            fwrite(put, 1, end - put, out);
                            put = end;
                        }
                    }

                    // Process the last processed byte if it wasn't written.
                    if (mix) {
                        // Load the last byte into the bit buffer.
                        buf += (unsigned)(*put++) << num;
                        num += 8;

                        if (strm.data_type & 0x40) {
                            // We are at the end of the deflate stream and
                            // there are bits pad bits. Discard the pad bits
                            // and write a byte to the output, if available.
                            // Leave the num bits left over in buf to prepend
                            // to the next deflate stream.
                            num -= bits;
                            if (num >= 8) {
                                putc(buf, out);
                                num -= 8;
                                buf >>= 8;
                            }

                            // Force the pad bits in the bit buffer to zeros.
                            buf &= ((unsigned long)1 << num) - 1;

                            // Don't need to set prev here since going to TAIL.
                        }
                        else
                            // At the end of an internal deflate block. Leave
                            // the last byte in the bit buffer to examine on
                            // the next entry to BLOCK, when more bits from the
                            // next block will be available.
                            prev = num - bits;      // number of bits in buffer
                                                    // from current block
                    }

                    // Don't have a byte left over, so we are in the middle of
                    // a deflate block, or the deflate block ended on a byte
                    // boundary. Set prev appropriately for the next entry into
                    // BLOCK.
                    else if (strm.data_type & 0x80)
                        // The block ended on a byte boundary, so no header
                        // bits are in the bit buffer.
                        prev = num;
                    else
                        // In the middle of a deflate block, so no header here.
                        prev = -1;

                    // Check for the end of the deflate stream.
                    if ((strm.data_type & 0xc0) == 0xc0) {
                        // That ends the deflate stream on the input side, the
                        // pad bits were discarded, and any remaining bits from
                        // the last block in the stream are saved in the bit
                        // buffer to prepend to the next stream. Process the
                        // gzip trailer next.
                        tail = 0;
                        part = 0;
                        state = TAIL;
                    }
                    break;

                case TAIL:
                    // Accumulate available trailer bytes to update the total
                    // CRC and the total uncompressed length.
                    do {
                        part = (part >> 8) + ((unsigned long)(*put++) << 24);
                        tail++;
                        if (tail == 4) {
                            // Update the total CRC.
                            z_off_t len2 = memb;
                            if (len2 < 0 || (unsigned long long)len2 != memb)
                                BYE("overflow error");
                            crc = crc ? crc32_combine(crc, part, len2) : part;
                            part = 0;
                        }
                        else if (tail == 8) {
                            // Update the total uncompressed length. (It's ok
                            // if this sum is done modulo 2^32.)
                            len += part;

                            // At the end of a member. Set up to inflate an
                            // immediately following gzip member. (If we made
                            // it this far, then the trailer was valid.)
                            if (inflateReset(&strm) != Z_OK)
                                BYE("internal error");
                            state = BETWEEN;
                            break;
                        }
                    } while (put < strm.next_in);
                    break;
            }

            // Process the input buffer until completely consumed.
        } while (strm.avail_in > 0);

        // Process input until end of file, invalid input, or i/o error.
    } while (more);

    // Done with the inflate engine.
    inflateEnd(&strm);

    // Verify the validity of the input.
    if (state != BETWEEN)
        BYE("input invalid: incomplete gzip stream");

    // Write the remaining deflate stream bits, followed by a terminating
    // deflate fixed block.
    buf += (unsigned long)3 << num;
    putc(buf, out);
    putc(buf >> 8, out);
    if (num > 6)
        putc(0, out);

    // Write the gzip trailer, which is the CRC and the uncompressed length
    // modulo 2^32, both in little-endian order.
    putc(crc, out);
    putc(crc >> 8, out);
    putc(crc >> 16, out);
    putc(crc >> 24, out);
    putc(len, out);
    putc(len >> 8, out);
    putc(len >> 16, out);
    putc(len >> 24, out);
    fflush(out);

    // Check for any i/o errors.
    if (ferror(in) || ferror(out))
        BYE("i/o error: %s", strerror(errno));

    // All good!
    *err = NULL;
    return 0;
}

// Normalize the gzip stream on stdin, writing the result to stdout.
int main(void) {
    // Avoid end-of-line conversions on evil operating systems.
    SET_BINARY_MODE(stdin);
    SET_BINARY_MODE(stdout);

    // Normalize from stdin to stdout, returning 1 on error, 0 if ok.
    char *err;
    int ret = gzip_normalize(stdin, stdout, &err);
    if (ret)
        fprintf(stderr, "gznorm error: %s\n", err);
    free(err);
    return ret;
}
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>zlib Usage Example</title>
<!--  Copyright (c) 2004-2023 Mark Adler.  -->
</head>
<body bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#00A000">
<h2 align="center"> zlib Usage Example </h2>
We often get questions about how the <tt>deflate()</tt> and <tt>inflate()</tt> functions should be used.
Users wonder when they should provide more input, when they should use more output,
what to do with a <tt>Z_BUF_ERROR</tt>, how to make sure the process terminates properly, and
so on.  So for those who have read <tt>zlib.h</tt> (a few times), and
would like further edification, below is an annotated example in C of simple routines to compress and decompress
from an input file to an output file using <tt>deflate()</tt> and <tt>inflate()</tt> respectively.  The
annotations are interspersed between lines of the code.  So please read between the lines.
We hope this helps explain some of the intricacies of <em>zlib</em>.
<p>
Without further ado, here is the program <a href="zpipe.c"><tt>zpipe.c</tt></a>:
<pre><b>
/* zpipe.c: example of proper use of zlib's inflate() and deflate()
   Not copyrighted -- provided to the public domain
   Version 1.4  11 December 2005  Mark Adler */

/* Version history:
   1.0  30 Oct 2004  First version
   1.1   8 Nov 2004  Add void casting for unused return values
                     Use switch statement for inflate() return values
   1.2   9 Nov 2004  Add assertions to document zlib guarantees
   1.3   6 Apr 2005  Remove incorrect assertion in inf()
   1.4  11 Dec 2005  Add hack to avoid MSDOS end-of-line conversions
                     Avoid some compiler warnings for input and output buffers
 */
</b></pre><!-- -->
We now include the header files for the required definitions.  From
<tt>stdio.h</tt> we use <tt>fopen()</tt>, <tt>fread()</tt>, <tt>fwrite()</tt>,
<tt>feof()</tt>, <tt>ferror()</tt>, and <tt>fclose()</tt> for file i/o, and
<tt>fputs()</tt> for error messages.  From <tt>string.h</tt> we use
<tt>strcmp()</tt> for command line argument processing.
From <tt>assert.h</tt> we use the <tt>assert()</tt> macro.
From <tt>zlib.h</tt>
we use the basic compression functions <tt>deflateInit()</tt>,
<tt>deflate()</tt>, and <tt>deflateEnd()</tt>, and the basic decompression
functions <tt>inflateInit()</tt>, <tt>inflate()</tt>, and
<tt>inflateEnd()</tt>.
<pre><b>
#include &lt;stdio.h&gt;
#include &lt;string.h&gt;
#include &lt;assert.h&gt;
#include "zlib.h"
</b></pre><!-- -->
This is an ugly hack required to avoid corruption of the input and output data on
Windows/MS-DOS systems.  Without this, those systems would assume that the input and output
files are text, and try to convert the end-of-line characters from one standard to
another.  That would corrupt binary data, and in particular would render the compressed data unusable.
This sets the input and output to binary which suppresses the end-of-line conversions.
<tt>SET_BINARY_MODE()</tt> will be used later on <tt>stdin</tt> and <tt>stdout</tt>, at the beginning of <tt>main()</tt>.
<pre><b>
#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
#  include &lt;fcntl.h&gt;
#  include &lt;io.h&gt;
#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#  define SET_BINARY_MODE(file)
#endif
</b></pre><!-- -->
<tt>CHUNK</tt> is simply the buffer size for feeding data to and pulling data
from the <em>zlib</em> routines.  Larger buffer sizes would be more efficient,
especially for <tt>inflate()</tt>.  If the memory is available, buffers sizes
on the order of 128K or 256K bytes should be used.
<pre><b>
#define CHUNK 16384
</b></pre><!-- -->
The <tt>def()</tt> routine compresses data from an input file to an output file.  The output data
will be in the <em>zlib</em> format, which is different from the <em>gzip</em> or <em>zip</em>
formats.  The <em>zlib</em> format has a very small header of only two bytes to identify it as
a <em>zlib</em> stream and to provide decoding information, and a four-byte trailer with a fast
check value to verify the integrity of the uncompressed data after decoding.
<pre><b>
/* Compress from file source to file dest until EOF on source.
   def() returns Z_OK on success, Z_MEM_ERROR if memory could not be
   allocated for processing, Z_STREAM_ERROR if an invalid compression
   level is supplied, Z_VERSION_ERROR if the version of zlib.h and the
   version of the library linked do not match, or Z_ERRNO if there is
   an error reading or writing the files. */
int def(FILE *source, FILE *dest, int level)
{
</b></pre>
Here are the local variables for <tt>def()</tt>.  <tt>ret</tt> will be used for <em>zlib</em>
return codes.  <tt>flush</tt> will keep track of the current flushing state for <tt>deflate()</tt>,
which is either no flushing, or flush to completion after the end of the input file is reached.
<tt>have</tt> is the amount of data returned from <tt>deflate()</tt>.  The <tt>strm</tt> structure
is used to pass information to and from the <em>zlib</em> routines, and to maintain the
<tt>deflate()</tt> state.  <tt>in</tt> and <tt>out</tt> are the input and output buffers for
<tt>deflate()</tt>.
<pre><b>
    int ret, flush;
    unsigned have;
    z_stream strm;
    unsigned char in[CHUNK];
    unsigned char out[CHUNK];
</b></pre><!-- -->
The first thing we do is to initialize the <em>zlib</em> state for compression using
<tt>deflateInit()</tt>.  This must be done before the first use of <tt>deflate()</tt>.
The <tt>zalloc</tt>, <tt>zfree</tt>, and <tt>opaque</tt> fields in the <tt>strm</tt>
structure must be initialized before calling <tt>deflateInit()</tt>.  Here they are
set to the <em>zlib</em> constant <tt>Z_NULL</tt> to request that <em>zlib</em> use
the default memory allocation routines.  An application may also choose to provide
custom memory allocation routines here.  <tt>deflateInit()</tt> will allocate on the
order of 256K bytes for the internal state.
(See <a href="zlib_tech.html"><em>zlib Technical Details</em></a>.)
<p>
<tt>deflateInit()</tt> is called with a pointer to the structure to be initialized and
the compression level, which is an integer in the range of -1 to 9.  Lower compression
levels result in faster execution, but less compression.  Higher levels result in
greater compression, but slower execution.  The <em>zlib</em> constant Z_DEFAULT_COMPRESSION,
equal to -1,
provides a good compromise between compression and speed and is equivalent to level 6.
Level 0 actually does no compression at all, and in fact expands the data slightly to produce
the <em>zlib</em> format (it is not a byte-for-byte copy of the input).
More advanced applications of <em>zlib</em>
may use <tt>deflateInit2()</tt> here instead.  Such an application may want to reduce how
much memory will be used, at some price in compression.  Or it may need to request a
<em>gzip</em> header and trailer instead of a <em>zlib</em> header and trailer, or raw
encoding with no header or trailer at all.
<p>
We must check the return value of <tt>deflateInit()</tt> against the <em>zlib</em> constant
<tt>Z_OK</tt> to make sure that it was able to
allocate memory for the internal state, and that the provided arguments were valid.
<tt>deflateInit()</tt> will also check that the version of <em>zlib</em> that the <tt>zlib.h</tt>
file came from matches the version of <em>zlib</em> actually linked with the program.  This
is especially important for environments in which <em>zlib</em> is a shared library.
<p>
Note that an application can initialize multiple, independent <em>zlib</em> streams, which can
operate in parallel.  The state information maintained in the structure allows the <em>zlib</em>
routines to be reentrant.
<pre><b>
    /* allocate deflate state */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    ret = deflateInit(&amp;strm, level);
    if (ret != Z_OK)
        return ret;
</b></pre><!-- -->
With the pleasantries out of the way, now we can get down to business.  The outer <tt>do</tt>-loop
reads all of the input file and exits at the bottom of the loop once end-of-file is reached.
This loop contains the only call of <tt>deflate()</tt>.  So we must make sure that all of the
input data has been processed and that all of the output data has been generated and consumed
before we fall out of the loop at the bottom.
<pre><b>
    /* compress until end of file */
    do {
</b></pre>
We start off by reading data from the input file.  The number of bytes read is put directly
into <tt>avail_in</tt>, and a pointer to those bytes is put into <tt>next_in</tt>.  We also
check to see if end-of-file on the input has been reached using feof().
If we are at the end of file, then <tt>flush</tt> is set to the
<em>zlib</em> constant <tt>Z_FINISH</tt>, which is later passed to <tt>deflate()</tt> to
indicate that this is the last chunk of input data to compress.
If we are not yet at the end of the input, then the <em>zlib</em>
constant <tt>Z_NO_FLUSH</tt> will be passed to <tt>deflate</tt> to indicate that we are still
in the middle of the uncompressed data.
<p>
If there is an error in reading from the input file, the process is aborted with
<tt>deflateEnd()</tt> being called to free the allocated <em>zlib</em> state before returning
the error.  We wouldn't want a memory leak, now would we?  <tt>deflateEnd()</tt> can be called
at any time after the state has been initialized.  Once that's done, <tt>deflateInit()</tt> (or
<tt>deflateInit2()</tt>) would have to be called to start a new compression process.  There is
no point here in checking the <tt>deflateEnd()</tt> return code.  The deallocation can't fail.
<pre><b>
        strm.avail_in = fread(in, 1, CHUNK, source);
        if (ferror(source)) {
            (void)deflateEnd(&amp;strm);
            return Z_ERRNO;
        }
        flush = feof(source) ? Z_FINISH : Z_NO_FLUSH;
        strm.next_in = in;
</b></pre><!-- -->
The inner <tt>do</tt>-loop passes our chunk of input data to <tt>deflate()</tt>, and then
keeps calling <tt>deflate()</tt> until it is done producing output.  Once there is no more
new output, <tt>deflate()</tt> is guaranteed to have consumed all of the input, i.e.,
<tt>avail_in</tt> will be zero.
<pre><b>
        /* run deflate() on input until output buffer not full, finish
           compression if all of source has been read in */
        do {
</b></pre>
Output space is provided to <tt>deflate()</tt> by setting <tt>avail_out</tt> to the number
of available output bytes and <tt>next_out</tt> to a pointer to that space.
<pre><b>
            strm.avail_out = CHUNK;
            strm.next_out = out;
</b></pre>
Now we call the compression engine itself, <tt>deflate()</tt>.  It takes as many of the
<tt>avail_in</tt> bytes at <tt>next_in</tt> as it can process, and writes as many as
<tt>avail_out</tt> bytes to <tt>next_out</tt>.  Those counters and pointers are then
updated past the input data consumed and the output data written.  It is the amount of
output space available that may limit how much input is consumed.
Hence the inner loop to make sure that
all of the input is consumed by providing more output space each time.  Since <tt>avail_in</tt>
and <tt>next_in</tt> are updated by <tt>deflate()</tt>, we don't have to mess with those
between <tt>deflate()</tt> calls until it's all used up.
<p>
The parameters to <tt>deflate()</tt> are a pointer to the <tt>strm</tt> structure containing
the input and output information and the internal compression engine state, and a parameter
indicating whether and how to flush data to the output.  Normally <tt>deflate</tt> will consume
several K bytes of input data before producing any output (except for the header), in order
to accumulate statistics on the data for optimum compression.  It will then put out a burst of
compressed data, and proceed to consume more input before the next burst.  Eventually,
<tt>deflate()</tt>
must be told to terminate the stream, complete the compression with provided input data, and
write out the trailer check value.  <tt>deflate()</tt> will continue to compress normally as long
as the flush parameter is <tt>Z_NO_FLUSH</tt>.  Once the <tt>Z_FINISH</tt> parameter is provided,
<tt>deflate()</tt> will begin to complete the compressed output stream.  However depending on how
much output space is provided, <tt>deflate()</tt> may have to be called several times until it
has provided the complete compressed stream, even after it has consumed all of the input.  The flush
parameter must continue to be <tt>Z_FINISH</tt> for those subsequent calls.
<p>
There are other values of the flush parameter that are used in more advanced applications.  You can
force <tt>deflate()</tt> to produce a burst of output that encodes all of the input data provided
so far, even if it wouldn't have otherwise, for example to control data latency on a link with
compressed data.  You can also ask that <tt>deflate()</tt> do that as well as erase any history up to
that point so that what follows can be decompressed independently, for example for random access
applications.  Both requests will degrade compression by an amount depending on how often such
requests are made.
<p>
<tt>deflate()</tt> has a return value that can indicate errors, yet we do not check it here.  Why
not?  Well, it turns out that <tt>deflate()</tt> can do no wrong here.  Let's go through
<tt>deflate()</tt>'s return values and dispense with them one by one.  The possible values are
<tt>Z_OK</tt>, <tt>Z_STREAM_END</tt>, <tt>Z_STREAM_ERROR</tt>, or <tt>Z_BUF_ERROR</tt>.  <tt>Z_OK</tt>
is, well, ok.  <tt>Z_STREAM_END</tt> is also ok and will be returned for the last call of
<tt>deflate()</tt>.  This is already guaranteed by calling <tt>deflate()</tt> with <tt>Z_FINISH</tt>
until it has no more output.  <tt>Z_STREAM_ERROR</tt> is only possible if the stream is not
initialized properly, but we did initialize it properly.  There is no harm in checking for
<tt>Z_STREAM_ERROR</tt> here, for example to check for the possibility that some
other part of the application inadvertently clobbered the memory containing the <em>zlib</em> state.
<tt>Z_BUF_ERROR</tt> will be explained further below, but
suffice it to say that this is simply an indication that <tt>deflate()</tt> could not consume
more input or produce more output.  <tt>deflate()</tt> can be called again with more output space
or more available input, which it will be in this code.
<pre><b>
            ret = deflate(&amp;strm, flush);    /* no bad return value */
            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
</b></pre>
Now we compute how much output <tt>deflate()</tt> provided on the last call, which is the
difference between how much space was provided before the call, and how much output space
is still available after the call.  Then that data, if any, is written to the output file.
We can then reuse the output buffer for the next call of <tt>deflate()</tt>.  Again if there
is a file i/o error, we call <tt>deflateEnd()</tt> before returning to avoid a memory leak.
<pre><b>
            have = CHUNK - strm.avail_out;
            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
                (void)deflateEnd(&amp;strm);
                return Z_ERRNO;
            }
</b></pre>
The inner <tt>do</tt>-loop is repeated until the last <tt>deflate()</tt> call fails to fill the
provided output buffer.  Then we know that <tt>deflate()</tt> has done as much as it can with
the provided input, and that all of that input has been consumed.  We can then fall out of this
loop and reuse the input buffer.
<p>
The way we tell that <tt>deflate()</tt> has no more output is by seeing that it did not fill
the output buffer, leaving <tt>avail_out</tt> greater than zero.  However suppose that
<tt>deflate()</tt> has no more output, but just so happened to exactly fill the output buffer!
<tt>avail_out</tt> is zero, and we can't tell that <tt>deflate()</tt> has done all it can.
As far as we know, <tt>deflate()</tt>
has more output for us.  So we call it again.  But now <tt>deflate()</tt> produces no output
at all, and <tt>avail_out</tt> remains unchanged as <tt>CHUNK</tt>.  That <tt>deflate()</tt> call
wasn't able to do anything, either consume input or produce output, and so it returns
<tt>Z_BUF_ERROR</tt>.  (See, I told you I'd cover this later.)  However this is not a problem at
all.  Now we finally have the desired indication that <tt>deflate()</tt> is really done,
and so we drop out of the inner loop to provide more input to <tt>deflate()</tt>.
<p>
With <tt>flush</tt> set to <tt>Z_FINISH</tt>, this final set of <tt>deflate()</tt> calls will
complete the output stream.  Once that is done, subsequent calls of <tt>deflate()</tt> would return
<tt>Z_STREAM_ERROR</tt> if the flush parameter is not <tt>Z_FINISH</tt>, and do no more processing
until the state is reinitialized.
<p>
Some applications of <em>zlib</em> have two loops that call <tt>deflate()</tt>
instead of the single inner loop we have here.  The first loop would call
without flushing and feed all of the data to <tt>deflate()</tt>.  The second loop would call
<tt>deflate()</tt> with no more
data and the <tt>Z_FINISH</tt> parameter to complete the process.  As you can see from this
example, that can be avoided by simply keeping track of the current flush state.
<pre><b>
        } while (strm.avail_out == 0);
        assert(strm.avail_in == 0);     /* all input will be used */
</b></pre><!-- -->
Now we check to see if we have already processed all of the input file.  That information was
saved in the <tt>flush</tt> variable, so we see if that was set to <tt>Z_FINISH</tt>.  If so,
then we're done and we fall out of the outer loop.  We're guaranteed to get <tt>Z_STREAM_END</tt>
from the last <tt>deflate()</tt> call, since we ran it until the last chunk of input was
consumed and all of the output was generated.
<pre><b>
        /* done when last data in file processed */
    } while (flush != Z_FINISH);
    assert(ret == Z_STREAM_END);        /* stream will be complete */
</b></pre><!-- -->
The process is complete, but we still need to deallocate the state to avoid a memory leak
(or rather more like a memory hemorrhage if you didn't do this).  Then
finally we can return with a happy return value.
<pre><b>
    /* clean up and return */
    (void)deflateEnd(&amp;strm);
    return Z_OK;
}
</b></pre><!-- -->
Now we do the same thing for decompression in the <tt>inf()</tt> routine. <tt>inf()</tt>
decompresses what is hopefully a valid <em>zlib</em> stream from the input file and writes the
uncompressed data to the output file.  Much of the discussion above for <tt>def()</tt>
applies to <tt>inf()</tt> as well, so the discussion here will focus on the differences between
the two.
<pre><b>
/* Decompress from file source to file dest until stream ends or EOF.
   inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
   allocated for processing, Z_DATA_ERROR if the deflate data is
   invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
   the version of the library linked do not match, or Z_ERRNO if there
   is an error reading or writing the files. */
int inf(FILE *source, FILE *dest)
{
</b></pre>
The local variables have the same functionality as they do for <tt>def()</tt>.  The
only difference is that there is no <tt>flush</tt> variable, since <tt>inflate()</tt>
can tell from the <em>zlib</em> stream itself when the stream is complete.
<pre><b>
    int ret;
    unsigned have;
    z_stream strm;
    unsigned char in[CHUNK];
    unsigned char out[CHUNK];
</b></pre><!-- -->
The initialization of the state is the same, except that there is no compression level,
of course, and two more elements of the structure are initialized.  <tt>avail_in</tt>
and <tt>next_in</tt> must be initialized before calling <tt>inflateInit()</tt>.  This
is because the application has the option to provide the start of the zlib stream in
order for <tt>inflateInit()</tt> to have access to information about the compression
method to aid in memory allocation.  In the current implementation of <em>zlib</em>
(up through versions 1.2.x), the method-dependent memory allocations are deferred to the first call of
<tt>inflate()</tt> anyway.  However those fields must be initialized since later versions
of <em>zlib</em> that provide more compression methods may take advantage of this interface.
In any case, no decompression is performed by <tt>inflateInit()</tt>, so the
<tt>avail_out</tt> and <tt>next_out</tt> fields do not need to be initialized before calling.
<p>
Here <tt>avail_in</tt> is set to zero and <tt>next_in</tt> is set to <tt>Z_NULL</tt> to
indicate that no input data is being provided.
<pre><b>
    /* allocate inflate state */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit(&amp;strm);
    if (ret != Z_OK)
        return ret;
</b></pre><!-- -->
The outer <tt>do</tt>-loop decompresses input until <tt>inflate()</tt> indicates
that it has reached the end of the compressed data and has produced all of the uncompressed
output.  This is in contrast to <tt>def()</tt> which processes all of the input file.
If end-of-file is reached before the compressed data self-terminates, then the compressed
data is incomplete and an error is returned.
<pre><b>
    /* decompress until deflate stream ends or end of file */
    do {
</b></pre>
We read input data and set the <tt>strm</tt> structure accordingly.  If we've reached the
end of the input file, then we leave the outer loop and report an error, since the
compressed data is incomplete.  Note that we may read more data than is eventually consumed
by <tt>inflate()</tt>, if the input file continues past the <em>zlib</em> stream.
For applications where <em>zlib</em> streams are embedded in other data, this routine would
need to be modified to return the unused data, or at least indicate how much of the input
data was not used, so the application would know where to pick up after the <em>zlib</em> stream.
<pre><b>
        strm.avail_in = fread(in, 1, CHUNK, source);
        if (ferror(source)) {
            (void)inflateEnd(&amp;strm);
            return Z_ERRNO;
        }
        if (strm.avail_in == 0)
            break;
        strm.next_in = in;
</b></pre><!-- -->
The inner <tt>do</tt>-loop has the same function it did in <tt>def()</tt>, which is to
keep calling <tt>inflate()</tt> until has generated all of the output it can with the
provided input.
<pre><b>
        /* run inflate() on input until output buffer not full */
        do {
</b></pre>
Just like in <tt>def()</tt>, the same output space is provided for each call of <tt>inflate()</tt>.
<pre><b>
            strm.avail_out = CHUNK;
            strm.next_out = out;
</b></pre>
Now we run the decompression engine itself.  There is no need to adjust the flush parameter, since
the <em>zlib</em> format is self-terminating. The main difference here is that there are
return values that we need to pay attention to.  <tt>Z_DATA_ERROR</tt>
indicates that <tt>inflate()</tt> detected an error in the <em>zlib</em> compressed data format,
which means that either the data is not a <em>zlib</em> stream to begin with, or that the data was
corrupted somewhere along the way since it was compressed.  The other error to be processed is
<tt>Z_MEM_ERROR</tt>, which can occur since memory allocation is deferred until <tt>inflate()</tt>
needs it, unlike <tt>deflate()</tt>, whose memory is allocated at the start by <tt>deflateInit()</tt>.
<p>
Advanced applications may use
<tt>deflateSetDictionary()</tt> to prime <tt>deflate()</tt> with a set of likely data to improve the
first 32K or so of compression.  This is noted in the <em>zlib</em> header, so <tt>inflate()</tt>
requests that that dictionary be provided before it can start to decompress.  Without the dictionary,
correct decompression is not possible.  For this routine, we have no idea what the dictionary is,
so the <tt>Z_NEED_DICT</tt> indication is converted to a <tt>Z_DATA_ERROR</tt>.
<p>
<tt>inflate()</tt> can also return <tt>Z_STREAM_ERROR</tt>, which should not be possible here,
but could be checked for as noted above for <tt>def()</tt>.  <tt>Z_BUF_ERROR</tt> does not need to be
checked for here, for the same reasons noted for <tt>def()</tt>.  <tt>Z_STREAM_END</tt> will be
checked for later.
<pre><b>
            ret = inflate(&amp;strm, Z_NO_FLUSH);
            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
            switch (ret) {
            case Z_NEED_DICT:
                ret = Z_DATA_ERROR;     /* and fall through */
            case Z_DATA_ERROR:
            case Z_MEM_ERROR:
                (void)inflateEnd(&amp;strm);
                return ret;
            }
</b></pre>
The output of <tt>inflate()</tt> is handled identically to that of <tt>deflate()</tt>.
<pre><b>
            have = CHUNK - strm.avail_out;
            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
                (void)inflateEnd(&amp;strm);
                return Z_ERRNO;
            }
</b></pre>
The inner <tt>do</tt>-loop ends when <tt>inflate()</tt> has no more output as indicated
by not filling the output buffer, just as for <tt>deflate()</tt>.  In this case, we cannot
assert that <tt>strm.avail_in</tt> will be zero, since the deflate stream may end before the file
does.
<pre><b>
        } while (strm.avail_out == 0);
</b></pre><!-- -->
The outer <tt>do</tt>-loop ends when <tt>inflate()</tt> reports that it has reached the
end of the input <em>zlib</em> stream, has completed the decompression and integrity
check, and has provided all of the output.  This is indicated by the <tt>inflate()</tt>
return value <tt>Z_STREAM_END</tt>.  The inner loop is guaranteed to leave <tt>ret</tt>
equal to <tt>Z_STREAM_END</tt> if the last chunk of the input file read contained the end
of the <em>zlib</em> stream.  So if the return value is not <tt>Z_STREAM_END</tt>, the
loop continues to read more input.
<pre><b>
        /* done when inflate() says it's done */
    } while (ret != Z_STREAM_END);
</b></pre><!-- -->
At this point, decompression successfully completed, or we broke out of the loop due to no
more data being available from the input file.  If the last <tt>inflate()</tt> return value
is not <tt>Z_STREAM_END</tt>, then the <em>zlib</em> stream was incomplete and a data error
is returned.  Otherwise, we return with a happy return value.  Of course, <tt>inflateEnd()</tt>
is called first to avoid a memory leak.
<pre><b>
    /* clean up and return */
    (void)inflateEnd(&amp;strm);
    return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
}
</b></pre><!-- -->
That ends the routines that directly use <em>zlib</em>.  The following routines make this
a command-line program by running data through the above routines from <tt>stdin</tt> to
<tt>stdout</tt>, and handling any errors reported by <tt>def()</tt> or <tt>inf()</tt>.
<p>
<tt>zerr()</tt> is used to interpret the possible error codes from <tt>def()</tt>
and <tt>inf()</tt>, as detailed in their comments above, and print out an error message.
Note that these are only a subset of the possible return values from <tt>deflate()</tt>
and <tt>inflate()</tt>.
<pre><b>
/* report a zlib or i/o error */
void zerr(int ret)
{
    fputs("zpipe: ", stderr);
    switch (ret) {
    case Z_ERRNO:
        if (ferror(stdin))
            fputs("error reading stdin\n", stderr);
        if (ferror(stdout))
            fputs("error writing stdout\n", stderr);
        break;
    case Z_STREAM_ERROR:
        fputs("invalid compression level\n", stderr);
        break;
    case Z_DATA_ERROR:
        fputs("invalid or incomplete deflate data\n", stderr);
        break;
    case Z_MEM_ERROR:
        fputs("out of memory\n", stderr);
        break;
    case Z_VERSION_ERROR:
        fputs("zlib version mismatch!\n", stderr);
    }
}
</b></pre><!-- -->
Here is the <tt>main()</tt> routine used to test <tt>def()</tt> and <tt>inf()</tt>.  The
<tt>zpipe</tt> command is simply a compression pipe from <tt>stdin</tt> to <tt>stdout</tt>, if
no arguments are given, or it is a decompression pipe if <tt>zpipe -d</tt> is used.  If any other
arguments are provided, no compression or decompression is performed.  Instead a usage
message is displayed.  Examples are <tt>zpipe < foo.txt > foo.txt.z</tt> to compress, and
<tt>zpipe -d < foo.txt.z > foo.txt</tt> to decompress.
<pre><b>
/* compress or decompress from stdin to stdout */
int main(int argc, char **argv)
{
    int ret;

    /* avoid end-of-line conversions */
    SET_BINARY_MODE(stdin);
    SET_BINARY_MODE(stdout);

    /* do compression if no arguments */
    if (argc == 1) {
        ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION);
        if (ret != Z_OK)
            zerr(ret);
        return ret;
    }

    /* do decompression if -d specified */
    else if (argc == 2 &amp;&amp; strcmp(argv[1], "-d") == 0) {
        ret = inf(stdin, stdout);
        if (ret != Z_OK)
            zerr(ret);
        return ret;
    }

    /* otherwise, report usage */
    else {
        fputs("zpipe usage: zpipe [-d] &lt; source &gt; dest\n", stderr);
        return 1;
    }
}
</b></pre>
<hr>
<i>Last modified 24 January 2023<br>
Copyright &#169; 2004-2023 Mark Adler</i><br>
<a rel="license" href="http://creativecommons.org/licenses/by-nd/4.0/">
<img alt="Creative Commons License" style="border-width:0"
src="https://i.creativecommons.org/l/by-nd/4.0/88x31.png"></a>
<a rel="license" href="http://creativecommons.org/licenses/by-nd/4.0/">
Creative Commons Attribution-NoDerivatives 4.0 International License</a>.
</body>
</html>
Added compat/zlib/examples/zpipe.c.













































































































































































































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/* zpipe.c: example of proper use of zlib's inflate() and deflate()
   Not copyrighted -- provided to the public domain
   Version 1.4  11 December 2005  Mark Adler */

/* Version history:
   1.0  30 Oct 2004  First version
   1.1   8 Nov 2004  Add void casting for unused return values
                     Use switch statement for inflate() return values
   1.2   9 Nov 2004  Add assertions to document zlib guarantees
   1.3   6 Apr 2005  Remove incorrect assertion in inf()
   1.4  11 Dec 2005  Add hack to avoid MSDOS end-of-line conversions
                     Avoid some compiler warnings for input and output buffers
 */

#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "zlib.h"

#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
#  include <fcntl.h>
#  include <io.h>
#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#  define SET_BINARY_MODE(file)
#endif

#define CHUNK 16384

/* Compress from file source to file dest until EOF on source.
   def() returns Z_OK on success, Z_MEM_ERROR if memory could not be
   allocated for processing, Z_STREAM_ERROR if an invalid compression
   level is supplied, Z_VERSION_ERROR if the version of zlib.h and the
   version of the library linked do not match, or Z_ERRNO if there is
   an error reading or writing the files. */
int def(FILE *source, FILE *dest, int level)
{
    int ret, flush;
    unsigned have;
    z_stream strm;
    unsigned char in[CHUNK];
    unsigned char out[CHUNK];

    /* allocate deflate state */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    ret = deflateInit(&strm, level);
    if (ret != Z_OK)
        return ret;

    /* compress until end of file */
    do {
        strm.avail_in = fread(in, 1, CHUNK, source);
        if (ferror(source)) {
            (void)deflateEnd(&strm);
            return Z_ERRNO;
        }
        flush = feof(source) ? Z_FINISH : Z_NO_FLUSH;
        strm.next_in = in;

        /* run deflate() on input until output buffer not full, finish
           compression if all of source has been read in */
        do {
            strm.avail_out = CHUNK;
            strm.next_out = out;
            ret = deflate(&strm, flush);    /* no bad return value */
            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
            have = CHUNK - strm.avail_out;
            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
                (void)deflateEnd(&strm);
                return Z_ERRNO;
            }
        } while (strm.avail_out == 0);
        assert(strm.avail_in == 0);     /* all input will be used */

        /* done when last data in file processed */
    } while (flush != Z_FINISH);
    assert(ret == Z_STREAM_END);        /* stream will be complete */

    /* clean up and return */
    (void)deflateEnd(&strm);
    return Z_OK;
}

/* Decompress from file source to file dest until stream ends or EOF.
   inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
   allocated for processing, Z_DATA_ERROR if the deflate data is
   invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
   the version of the library linked do not match, or Z_ERRNO if there
   is an error reading or writing the files. */
int inf(FILE *source, FILE *dest)
{
    int ret;
    unsigned have;
    z_stream strm;
    unsigned char in[CHUNK];
    unsigned char out[CHUNK];

    /* allocate inflate state */
    strm.zalloc = Z_NULL;
    strm.zfree = Z_NULL;
    strm.opaque = Z_NULL;
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit(&strm);
    if (ret != Z_OK)
        return ret;

    /* decompress until deflate stream ends or end of file */
    do {
        strm.avail_in = fread(in, 1, CHUNK, source);
        if (ferror(source)) {
            (void)inflateEnd(&strm);
            return Z_ERRNO;
        }
        if (strm.avail_in == 0)
            break;
        strm.next_in = in;

        /* run inflate() on input until output buffer not full */
        do {
            strm.avail_out = CHUNK;
            strm.next_out = out;
            ret = inflate(&strm, Z_NO_FLUSH);
            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
            switch (ret) {
            case Z_NEED_DICT:
                ret = Z_DATA_ERROR;     /* and fall through */
            case Z_DATA_ERROR:
            case Z_MEM_ERROR:
                (void)inflateEnd(&strm);
                return ret;
            }
            have = CHUNK - strm.avail_out;
            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
                (void)inflateEnd(&strm);
                return Z_ERRNO;
            }
        } while (strm.avail_out == 0);

        /* done when inflate() says it's done */
    } while (ret != Z_STREAM_END);

    /* clean up and return */
    (void)inflateEnd(&strm);
    return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
}

/* report a zlib or i/o error */
void zerr(int ret)
{
    fputs("zpipe: ", stderr);
    switch (ret) {
    case Z_ERRNO:
        if (ferror(stdin))
            fputs("error reading stdin\n", stderr);
        if (ferror(stdout))
            fputs("error writing stdout\n", stderr);
        break;
    case Z_STREAM_ERROR:
        fputs("invalid compression level\n", stderr);
        break;
    case Z_DATA_ERROR:
        fputs("invalid or incomplete deflate data\n", stderr);
        break;
    case Z_MEM_ERROR:
        fputs("out of memory\n", stderr);
        break;
    case Z_VERSION_ERROR:
        fputs("zlib version mismatch!\n", stderr);
    }
}

/* compress or decompress from stdin to stdout */
int main(int argc, char **argv)
{
    int ret;

    /* avoid end-of-line conversions */
    SET_BINARY_MODE(stdin);
    SET_BINARY_MODE(stdout);

    /* do compression if no arguments */
    if (argc == 1) {
        ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION);
        if (ret != Z_OK)
            zerr(ret);
        return ret;
    }

    /* do decompression if -d specified */
    else if (argc == 2 && strcmp(argv[1], "-d") == 0) {
        ret = inf(stdin, stdout);
        if (ret != Z_OK)
            zerr(ret);
        return ret;
    }

    /* otherwise, report usage */
    else {
        fputs("zpipe usage: zpipe [-d] < source > dest\n", stderr);
        return 1;
    }
}
Added compat/zlib/examples/zran.c.





















































































































































































































































































































































































































































































































































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/* zran.c -- example of deflate stream indexing and random access
 * Copyright (C) 2005, 2012, 2018, 2023 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 * Version 1.4  13 Apr 2023  Mark Adler */

/* Version History:
 1.0  29 May 2005  First version
 1.1  29 Sep 2012  Fix memory reallocation error
 1.2  14 Oct 2018  Handle gzip streams with multiple members
                   Add a header file to facilitate usage in applications
 1.3  18 Feb 2023  Permit raw deflate streams as well as zlib and gzip
                   Permit crossing gzip member boundaries when extracting
                   Support a size_t size when extracting (was an int)
                   Do a binary search over the index for an access point
                   Expose the access point type to enable save and load
 1.4  13 Apr 2023  Add a NOPRIME define to not use inflatePrime()
 */

// Illustrate the use of Z_BLOCK, inflatePrime(), and inflateSetDictionary()
// for random access of a compressed file. A file containing a raw deflate
// stream is provided on the command line. The compressed stream is decoded in
// its entirety, and an index built with access points about every SPAN bytes
// in the uncompressed output. The compressed file is left open, and can then
// be read randomly, having to decompress on the average SPAN/2 uncompressed
// bytes before getting to the desired block of data.
//
// An access point can be created at the start of any deflate block, by saving
// the starting file offset and bit of that block, and the 32K bytes of
// uncompressed data that precede that block. Also the uncompressed offset of
// that block is saved to provide a reference for locating a desired starting
// point in the uncompressed stream. deflate_index_build() decompresses the
// input raw deflate stream a block at a time, and at the end of each block
// decides if enough uncompressed data has gone by to justify the creation of a
// new access point. If so, that point is saved in a data structure that grows
// as needed to accommodate the points.
//
// To use the index, an offset in the uncompressed data is provided, for which
// the latest access point at or preceding that offset is located in the index.
// The input file is positioned to the specified location in the index, and if
// necessary the first few bits of the compressed data is read from the file.
// inflate is initialized with those bits and the 32K of uncompressed data, and
// decompression then proceeds until the desired offset in the file is reached.
// Then decompression continues to read the requested uncompressed data from
// the file.
//
// There is some fair bit of overhead to starting inflation for the random
// access, mainly copying the 32K byte dictionary. If small pieces of the file
// are being accessed, it would make sense to implement a cache to hold some
// lookahead to avoid many calls to deflate_index_extract() for small lengths.
//
// Another way to build an index would be to use inflateCopy(). That would not
// be constrained to have access points at block boundaries, but would require
// more memory per access point, and could not be saved to a file due to the
// use of pointers in the state. The approach here allows for storage of the
// index in a file.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "zlib.h"
#include "zran.h"

#define WINSIZE 32768U      // sliding window size
#define CHUNK 16384         // file input buffer size

// See comments in zran.h.
void deflate_index_free(struct deflate_index *index) {
    if (index != NULL) {
        free(index->list);
        free(index);
    }
}

// Add an access point to the list. If out of memory, deallocate the existing
// list and return NULL. index->mode is temporarily the allocated number of
// access points, until it is time for deflate_index_build() to return. Then
// index->mode is set to the mode of inflation.
static struct deflate_index *add_point(struct deflate_index *index, int bits,
                                       off_t in, off_t out, unsigned left,
                                       unsigned char *window) {
    if (index == NULL) {
        // The list is empty. Create it, starting with eight access points.
        index = malloc(sizeof(struct deflate_index));
        if (index == NULL)
            return NULL;
        index->have = 0;
        index->mode = 8;
        index->list = malloc(sizeof(point_t) * index->mode);
        if (index->list == NULL) {
            free(index);
            return NULL;
        }
    }

    else if (index->have == index->mode) {
        // The list is full. Make it bigger.
        index->mode <<= 1;
        point_t *next = realloc(index->list, sizeof(point_t) * index->mode);
        if (next == NULL) {
            deflate_index_free(index);
            return NULL;
        }
        index->list = next;
    }

    // Fill in the access point and increment how many we have.
    point_t *next = (point_t *)(index->list) + index->have++;
    if (index->have < 0) {
        // Overflowed the int!
        deflate_index_free(index);
        return NULL;
    }
    next->out = out;
    next->in = in;
    next->bits = bits;
    if (left)
        memcpy(next->window, window + WINSIZE - left, left);
    if (left < WINSIZE)
        memcpy(next->window + left, window, WINSIZE - left);

    // Return the index, which may have been newly allocated or destroyed.
    return index;
}

// Decompression modes. These are the inflateInit2() windowBits parameter.
#define RAW -15
#define ZLIB 15
#define GZIP 31

// See comments in zran.h.
int deflate_index_build(FILE *in, off_t span, struct deflate_index **built) {
    // Set up inflation state.
    z_stream strm = {0};        // inflate engine (gets fired up later)
    unsigned char buf[CHUNK];   // input buffer
    unsigned char win[WINSIZE] = {0};   // output sliding window
    off_t totin = 0;            // total bytes read from input
    off_t totout = 0;           // total bytes uncompressed
    int mode = 0;               // mode: RAW, ZLIB, or GZIP (0 => not set yet)

    // Decompress from in, generating access points along the way.
    int ret;                    // the return value from zlib, or Z_ERRNO
    off_t last;                 // last access point uncompressed offset
    struct deflate_index *index = NULL;     // list of access points
    do {
        // Assure available input, at least until reaching EOF.
        if (strm.avail_in == 0) {
            strm.avail_in = fread(buf, 1, sizeof(buf), in);
            totin += strm.avail_in;
            strm.next_in = buf;
            if (strm.avail_in < sizeof(buf) && ferror(in)) {
                ret = Z_ERRNO;
                break;
            }

            if (mode == 0) {
                // At the start of the input -- determine the type. Assume raw
                // if it is neither zlib nor gzip. This could in theory result
                // in a false positive for zlib, but in practice the fill bits
                // after a stored block are always zeros, so a raw stream won't
                // start with an 8 in the low nybble.
                mode = strm.avail_in == 0 ? RAW :       // empty -- will fail
                       (strm.next_in[0] & 0xf) == 8 ? ZLIB :
                       strm.next_in[0] == 0x1f ? GZIP :
                       /* else */ RAW;
                ret = inflateInit2(&strm, mode);
                if (ret != Z_OK)
                    break;
            }
        }

        // Assure available output. This rotates the output through, for use as
        // a sliding window on the uncompressed data.
        if (strm.avail_out == 0) {
            strm.avail_out = sizeof(win);
            strm.next_out = win;
        }

        if (mode == RAW && index == NULL)
            // We skip the inflate() call at the start of raw deflate data in
            // order generate an access point there. Set data_type to imitate
            // the end of a header.
            strm.data_type = 0x80;
        else {
            // Inflate and update the number of uncompressed bytes.
            unsigned before = strm.avail_out;
            ret = inflate(&strm, Z_BLOCK);
            totout += before - strm.avail_out;
        }

        if ((strm.data_type & 0xc0) == 0x80 &&
            (index == NULL || totout - last >= span)) {
            // We are at the end of a header or a non-last deflate block, so we
            // can add an access point here. Furthermore, we are either at the
            // very start for the first access point, or there has been span or
            // more uncompressed bytes since the last access point, so we want
            // to add an access point here.
            index = add_point(index, strm.data_type & 7, totin - strm.avail_in,
                              totout, strm.avail_out, win);
            if (index == NULL) {
                ret = Z_MEM_ERROR;
                break;
            }
            last = totout;
        }

        if (ret == Z_STREAM_END && mode == GZIP &&
            (strm.avail_in || ungetc(getc(in), in) != EOF))
            // There is more input after the end of a gzip member. Reset the
            // inflate state to read another gzip member. On success, this will
            // set ret to Z_OK to continue decompressing.
            ret = inflateReset2(&strm, GZIP);

        // Keep going until Z_STREAM_END or error. If the compressed data ends
        // prematurely without a file read error, Z_BUF_ERROR is returned.
    } while (ret == Z_OK);
    inflateEnd(&strm);

    if (ret != Z_STREAM_END) {
        // An error was encountered. Discard the index and return a negative
        // error code.
        deflate_index_free(index);
        return ret == Z_NEED_DICT ? Z_DATA_ERROR : ret;
    }

    // Shrink the index to only the occupied access points and return it.
    index->mode = mode;
    index->length = totout;
    point_t *list = realloc(index->list, sizeof(point_t) * index->have);
    if (list == NULL) {
        // Seems like a realloc() to make something smaller should always work,
        // but just in case.
        deflate_index_free(index);
        return Z_MEM_ERROR;
    }
    index->list = list;
    *built = index;
    return index->have;
}

#ifdef NOPRIME
// Support zlib versions before 1.2.3 (July 2005), or incomplete zlib clones
// that do not have inflatePrime().

#  define INFLATEPRIME inflatePreface

// Append the low bits bits of value to in[] at bit position *have, updating
// *have. value must be zero above its low bits bits. bits must be positive.
// This assumes that any bits above the *have bits in the last byte are zeros.
// That assumption is preserved on return, as any bits above *have + bits in
// the last byte written will be set to zeros.
static inline void append_bits(unsigned value, int bits,
                               unsigned char *in, int *have) {
    in += *have >> 3;           // where the first bits from value will go
    int k = *have & 7;          // the number of bits already there
    *have += bits;
    if (k)
        *in |= value << k;      // write value above the low k bits
    else
        *in = value;
    k = 8 - k;                  // the number of bits just appended
    while (bits > k) {
        value >>= k;            // drop the bits appended
        bits -= k;
        k = 8;                  // now at a byte boundary
        *++in = value;
    }
}

// Insert enough bits in the form of empty deflate blocks in front of the
// low bits bits of value, in order to bring the sequence to a byte boundary.
// Then feed that to inflate(). This does what inflatePrime() does, except that
// a negative value of bits is not supported. bits must be in 0..16. If the
// arguments are invalid, Z_STREAM_ERROR is returned. Otherwise the return
// value from inflate() is returned.
static int inflatePreface(z_stream *strm, int bits, int value) {
    // Check input.
    if (strm == Z_NULL || bits < 0 || bits > 16)
        return Z_STREAM_ERROR;
    if (bits == 0)
        return Z_OK;
    value &= (2 << (bits - 1)) - 1;

    // An empty dynamic block with an odd number of bits (95). The high bit of
    // the last byte is unused.
    static const unsigned char dyn[] = {
        4, 0xe0, 0x81, 8, 0, 0, 0, 0, 0x20, 0xa8, 0xab, 0x1f
    };
    const int dynlen = 95;          // number of bits in the block

    // Build an input buffer for inflate that is a multiple of eight bits in
    // length, and that ends with the low bits bits of value.
    unsigned char in[(dynlen + 3 * 10 + 16 + 7) / 8];
    int have = 0;
    if (bits & 1) {
        // Insert an empty dynamic block to get to an odd number of bits, so
        // when bits bits from value are appended, we are at an even number of
        // bits.
        memcpy(in, dyn, sizeof(dyn));
        have = dynlen;
    }
    while ((have + bits) & 7)
        // Insert empty fixed blocks until appending bits bits would put us on
        // a byte boundary. This will insert at most three fixed blocks.
        append_bits(2, 10, in, &have);

    // Append the bits bits from value, which takes us to a byte boundary.
    append_bits(value, bits, in, &have);

    // Deliver the input to inflate(). There is no output space provided, but
    // inflate() can't get stuck waiting on output not ingesting all of the
    // provided input. The reason is that there will be at most 16 bits of
    // input from value after the empty deflate blocks (which themselves
    // generate no output). At least ten bits are needed to generate the first
    // output byte from a fixed block. The last two bytes of the buffer have to
    // be ingested in order to get ten bits, which is the most that value can
    // occupy.
    strm->avail_in = have >> 3;
    strm->next_in = in;
    strm->avail_out = 0;
    strm->next_out = in;                // not used, but can't be NULL
    return inflate(strm, Z_NO_FLUSH);
}

#else
#  define INFLATEPRIME inflatePrime
#endif

// See comments in zran.h.
ptrdiff_t deflate_index_extract(FILE *in, struct deflate_index *index,
                                off_t offset, unsigned char *buf, size_t len) {
    // Do a quick sanity check on the index.
    if (index == NULL || index->have < 1 || index->list[0].out != 0)
        return Z_STREAM_ERROR;

    // If nothing to extract, return zero bytes extracted.
    if (len == 0 || offset < 0 || offset >= index->length)
        return 0;

    // Find the access point closest to but not after offset.
    int lo = -1, hi = index->have;
    point_t *point = index->list;
    while (hi - lo > 1) {
        int mid = (lo + hi) >> 1;
        if (offset < point[mid].out)
            hi = mid;
        else
            lo = mid;
    }
    point += lo;

    // Initialize the input file and prime the inflate engine to start there.
    int ret = fseeko(in, point->in - (point->bits ? 1 : 0), SEEK_SET);
    if (ret == -1)
        return Z_ERRNO;
    int ch = 0;
    if (point->bits && (ch = getc(in)) == EOF)
        return ferror(in) ? Z_ERRNO : Z_BUF_ERROR;
    z_stream strm = {0};
    ret = inflateInit2(&strm, RAW);
    if (ret != Z_OK)
        return ret;
    if (point->bits)
        INFLATEPRIME(&strm, point->bits, ch >> (8 - point->bits));
    inflateSetDictionary(&strm, point->window, WINSIZE);

    // Skip uncompressed bytes until offset reached, then satisfy request.
    unsigned char input[CHUNK];
    unsigned char discard[WINSIZE];
    offset -= point->out;       // number of bytes to skip to get to offset
    size_t left = len;          // number of bytes left to read after offset
    do {
        if (offset) {
            // Discard up to offset uncompressed bytes.
            strm.avail_out = offset < WINSIZE ? (unsigned)offset : WINSIZE;
            strm.next_out = discard;
        }
        else {
            // Uncompress up to left bytes into buf.
            strm.avail_out = left < UINT_MAX ? (unsigned)left : UINT_MAX;
            strm.next_out = buf + len - left;
        }

        // Uncompress, setting got to the number of bytes uncompressed.
        if (strm.avail_in == 0) {
            // Assure available input.
            strm.avail_in = fread(input, 1, CHUNK, in);
            if (strm.avail_in < CHUNK && ferror(in)) {
                ret = Z_ERRNO;
                break;
            }
            strm.next_in = input;
        }
        unsigned got = strm.avail_out;
        ret = inflate(&strm, Z_NO_FLUSH);
        got -= strm.avail_out;

        // Update the appropriate count.
        if (offset)
            offset -= got;
        else
            left -= got;

        // If we're at the end of a gzip member and there's more to read,
        // continue to the next gzip member.
        if (ret == Z_STREAM_END && index->mode == GZIP) {
            // Discard the gzip trailer.
            unsigned drop = 8;              // length of gzip trailer
            if (strm.avail_in >= drop) {
                strm.avail_in -= drop;
                strm.next_in += drop;
            }
            else {
                // Read and discard the remainder of the gzip trailer.
                drop -= strm.avail_in;
                strm.avail_in = 0;
                do {
                    if (getc(in) == EOF)
                        // The input does not have a complete trailer.
                        return ferror(in) ? Z_ERRNO : Z_BUF_ERROR;
                } while (--drop);
            }

            if (strm.avail_in || ungetc(getc(in), in) != EOF) {
                // There's more after the gzip trailer. Use inflate to skip the
                // gzip header and resume the raw inflate there.
                inflateReset2(&strm, GZIP);
                do {
                    if (strm.avail_in == 0) {
                        strm.avail_in = fread(input, 1, CHUNK, in);
                        if (strm.avail_in < CHUNK && ferror(in)) {
                            ret = Z_ERRNO;
                            break;
                        }
                        strm.next_in = input;
                    }
                    strm.avail_out = WINSIZE;
                    strm.next_out = discard;
                    ret = inflate(&strm, Z_BLOCK);  // stop at end of header
                } while (ret == Z_OK && (strm.data_type & 0x80) == 0);
                if (ret != Z_OK)
                    break;
                inflateReset2(&strm, RAW);
            }
        }

        // Continue until we have the requested data, the deflate data has
        // ended, or an error is encountered.
    } while (ret == Z_OK && left);
    inflateEnd(&strm);

    // Return the number of uncompressed bytes read into buf, or the error.
    return ret == Z_OK || ret == Z_STREAM_END ? len - left : ret;
}

#ifdef TEST

#define SPAN 1048576L       // desired distance between access points
#define LEN 16384           // number of bytes to extract

// Demonstrate the use of deflate_index_build() and deflate_index_extract() by
// processing the file provided on the command line, and extracting LEN bytes
// from 2/3rds of the way through the uncompressed output, writing that to
// stdout. An offset can be provided as the second argument, in which case the
// data is extracted from there instead.
int main(int argc, char **argv) {
    // Open the input file.
    if (argc < 2 || argc > 3) {
        fprintf(stderr, "usage: zran file.raw [offset]\n");
        return 1;
    }
    FILE *in = fopen(argv[1], "rb");
    if (in == NULL) {
        fprintf(stderr, "zran: could not open %s for reading\n", argv[1]);
        return 1;
    }

    // Get optional offset.
    off_t offset = -1;
    if (argc == 3) {
        char *end;
        offset = strtoll(argv[2], &end, 10);
        if (*end || offset < 0) {
            fprintf(stderr, "zran: %s is not a valid offset\n", argv[2]);
            return 1;
        }
    }

    // Build index.
    struct deflate_index *index = NULL;
    int len = deflate_index_build(in, SPAN, &index);
    if (len < 0) {
        fclose(in);
        switch (len) {
        case Z_MEM_ERROR:
            fprintf(stderr, "zran: out of memory\n");
            break;
        case Z_BUF_ERROR:
            fprintf(stderr, "zran: %s ended prematurely\n", argv[1]);
            break;
        case Z_DATA_ERROR:
            fprintf(stderr, "zran: compressed data error in %s\n", argv[1]);
            break;
        case Z_ERRNO:
            fprintf(stderr, "zran: read error on %s\n", argv[1]);
            break;
        default:
            fprintf(stderr, "zran: error %d while building index\n", len);
        }
        return 1;
    }
    fprintf(stderr, "zran: built index with %d access points\n", len);

    // Use index by reading some bytes from an arbitrary offset.
    unsigned char buf[LEN];
    if (offset == -1)
        offset = ((index->length + 1) << 1) / 3;
    ptrdiff_t got = deflate_index_extract(in, index, offset, buf, LEN);
    if (got < 0)
        fprintf(stderr, "zran: extraction failed: %s error\n",
                got == Z_MEM_ERROR ? "out of memory" : "input corrupted");
    else {
        fwrite(buf, 1, got, stdout);
        fprintf(stderr, "zran: extracted %ld bytes at %lld\n", got, offset);
    }

    // Clean up and exit.
    deflate_index_free(index);
    fclose(in);
    return 0;
}

#endif
Added compat/zlib/examples/zran.h.



















































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/* zran.h -- example of deflated stream indexing and random access
 * Copyright (C) 2005, 2012, 2018, 2023 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 * Version 1.3  18 Feb 2023  Mark Adler */

#include <stdio.h>
#include "zlib.h"

// Access point.
typedef struct point {
    off_t out;          // offset in uncompressed data
    off_t in;           // offset in compressed file of first full byte
    int bits;           // 0, or number of bits (1-7) from byte at in-1
    unsigned char window[32768];    // preceding 32K of uncompressed data
} point_t;

// Access point list.
struct deflate_index {
    int have;           // number of access points in list
    int mode;           // -15 for raw, 15 for zlib, or 31 for gzip
    off_t length;       // total length of uncompressed data
    point_t *list;      // allocated list of access points
};

// Make one pass through a zlib, gzip, or raw deflate compressed stream and
// build an index, with access points about every span bytes of uncompressed
// output. gzip files with multiple members are fully indexed. span should be
// chosen to balance the speed of random access against the memory requirements
// of the list, which is about 32K bytes per access point. The return value is
// the number of access points on success (>= 1), Z_MEM_ERROR for out of
// memory, Z_BUF_ERROR for a premature end of input, Z_DATA_ERROR for a format
// or verification error in the input file, or Z_ERRNO for a file read error.
// On success, *built points to the resulting index.
int deflate_index_build(FILE *in, off_t span, struct deflate_index **built);

// Use the index to read len bytes from offset into buf. Return the number of
// bytes read or a negative error code. If data is requested past the end of
// the uncompressed data, then deflate_index_extract() will return a value less
// than len, indicating how much was actually read into buf. If given a valid
// index, this function should not return an error unless the file was modified
// somehow since the index was generated, given that deflate_index_build() had
// validated all of the input. If nevertheless there is a failure, Z_BUF_ERROR
// is returned if the compressed data ends prematurely, Z_DATA_ERROR if the
// deflate compressed data is not valid, Z_MEM_ERROR if out of memory,
// Z_STREAM_ERROR if the index is not valid, or Z_ERRNO if there is an error
// reading or seeking on the input file.
ptrdiff_t deflate_index_extract(FILE *in, struct deflate_index *index,
                                off_t offset, unsigned char *buf, size_t len);

// Deallocate an index built by deflate_index_build().
void deflate_index_free(struct deflate_index *index);
Added compat/zlib/gzclose.c.























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/* gzclose.c -- zlib gzclose() function
 * Copyright (C) 2004, 2010 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "gzguts.h"

/* gzclose() is in a separate file so that it is linked in only if it is used.
   That way the other gzclose functions can be used instead to avoid linking in
   unneeded compression or decompression routines. */
int ZEXPORT gzclose(gzFile file) {
#ifndef NO_GZCOMPRESS
    gz_statep state;

    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;

    return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
#else
    return gzclose_r(file);
#endif
}
Added compat/zlib/gzguts.h.






















































































































































































































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/* gzguts.h -- zlib internal header definitions for gz* operations
 * Copyright (C) 2004-2024 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#ifdef _LARGEFILE64_SOURCE
#  ifndef _LARGEFILE_SOURCE
#    define _LARGEFILE_SOURCE 1
#  endif
#  undef _FILE_OFFSET_BITS
#  undef _TIME_BITS
#endif

#ifdef HAVE_HIDDEN
#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
#  define ZLIB_INTERNAL
#endif

#include <stdio.h>
#include "zlib.h"
#ifdef STDC
#  include <string.h>
#  include <stdlib.h>
#  include <limits.h>
#endif

#ifndef _POSIX_SOURCE
#  define _POSIX_SOURCE
#endif
#include <fcntl.h>

#ifdef _WIN32
#  include <stddef.h>
#endif

#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
#  include <io.h>
#endif

#if defined(_WIN32)
#  define WIDECHAR
#endif

#ifdef WINAPI_FAMILY
#  define open _open
#  define read _read
#  define write _write
#  define close _close
#endif

#ifdef NO_DEFLATE       /* for compatibility with old definition */
#  define NO_GZCOMPRESS
#endif

#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
#  ifndef HAVE_VSNPRINTF
#    define HAVE_VSNPRINTF
#  endif
#endif

#if defined(__CYGWIN__)
#  ifndef HAVE_VSNPRINTF
#    define HAVE_VSNPRINTF
#  endif
#endif

#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
#  ifndef HAVE_VSNPRINTF
#    define HAVE_VSNPRINTF
#  endif
#endif

#ifndef HAVE_VSNPRINTF
#  ifdef MSDOS
/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
   but for now we just assume it doesn't. */
#    define NO_vsnprintf
#  endif
#  ifdef __TURBOC__
#    define NO_vsnprintf
#  endif
#  ifdef WIN32
/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
#      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
#         define vsnprintf _vsnprintf
#      endif
#    endif
#  endif
#  ifdef __SASC
#    define NO_vsnprintf
#  endif
#  ifdef VMS
#    define NO_vsnprintf
#  endif
#  ifdef __OS400__
#    define NO_vsnprintf
#  endif
#  ifdef __MVS__
#    define NO_vsnprintf
#  endif
#endif

/* unlike snprintf (which is required in C99), _snprintf does not guarantee
   null termination of the result -- however this is only used in gzlib.c where
   the result is assured to fit in the space provided */
#if defined(_MSC_VER) && _MSC_VER < 1900
#  define snprintf _snprintf
#endif

#ifndef local
#  define local static
#endif
/* since "static" is used to mean two completely different things in C, we
   define "local" for the non-static meaning of "static", for readability
   (compile with -Dlocal if your debugger can't find static symbols) */

/* gz* functions always use library allocation functions */
#ifndef STDC
  extern voidp  malloc(uInt size);
  extern void   free(voidpf ptr);
#endif

/* get errno and strerror definition */
#if defined UNDER_CE
#  include <windows.h>
#  define zstrerror() gz_strwinerror((DWORD)GetLastError())
#else
#  ifndef NO_STRERROR
#    include <errno.h>
#    define zstrerror() strerror(errno)
#  else
#    define zstrerror() "stdio error (consult errno)"
#  endif
#endif

/* provide prototypes for these when building zlib without LFS */
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
    ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
    ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int);
    ZEXTERN z_off64_t ZEXPORT gztell64(gzFile);
    ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile);
#endif

/* default memLevel */
#if MAX_MEM_LEVEL >= 8
#  define DEF_MEM_LEVEL 8
#else
#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
#endif

/* default i/o buffer size -- double this for output when reading (this and
   twice this must be able to fit in an unsigned type) */
#define GZBUFSIZE 8192

/* gzip modes, also provide a little integrity check on the passed structure */
#define GZ_NONE 0
#define GZ_READ 7247
#define GZ_WRITE 31153
#define GZ_APPEND 1     /* mode set to GZ_WRITE after the file is opened */

/* values for gz_state how */
#define LOOK 0      /* look for a gzip header */
#define COPY 1      /* copy input directly */
#define GZIP 2      /* decompress a gzip stream */

/* internal gzip file state data structure */
typedef struct {
        /* exposed contents for gzgetc() macro */
    struct gzFile_s x;      /* "x" for exposed */
                            /* x.have: number of bytes available at x.next */
                            /* x.next: next output data to deliver or write */
                            /* x.pos: current position in uncompressed data */
        /* used for both reading and writing */
    int mode;               /* see gzip modes above */
    int fd;                 /* file descriptor */
    char *path;             /* path or fd for error messages */
    unsigned size;          /* buffer size, zero if not allocated yet */
    unsigned want;          /* requested buffer size, default is GZBUFSIZE */
    unsigned char *in;      /* input buffer (double-sized when writing) */
    unsigned char *out;     /* output buffer (double-sized when reading) */
    int direct;             /* 0 if processing gzip, 1 if transparent */
        /* just for reading */
    int how;                /* 0: get header, 1: copy, 2: decompress */
    z_off64_t start;        /* where the gzip data started, for rewinding */
    int eof;                /* true if end of input file reached */
    int past;               /* true if read requested past end */
        /* just for writing */
    int level;              /* compression level */
    int strategy;           /* compression strategy */
    int reset;              /* true if a reset is pending after a Z_FINISH */
        /* seek request */
    z_off64_t skip;         /* amount to skip (already rewound if backwards) */
    int seek;               /* true if seek request pending */
        /* error information */
    int err;                /* error code */
    char *msg;              /* error message */
        /* zlib inflate or deflate stream */
    z_stream strm;          /* stream structure in-place (not a pointer) */
} gz_state;
typedef gz_state FAR *gz_statep;

/* shared functions */
void ZLIB_INTERNAL gz_error(gz_statep, int, const char *);
#if defined UNDER_CE
char ZLIB_INTERNAL *gz_strwinerror(DWORD error);
#endif

/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
   value -- needed when comparing unsigned to z_off64_t, which is signed
   (possible z_off64_t types off_t, off64_t, and long are all signed) */
unsigned ZLIB_INTERNAL gz_intmax(void);
#define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
Added compat/zlib/gzlib.c.






































































































































































































































































































































































































































































































































































































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/* gzlib.c -- zlib functions common to reading and writing gzip files
 * Copyright (C) 2004-2024 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "gzguts.h"

#if defined(_WIN32) && !defined(__BORLANDC__)
#  define LSEEK _lseeki64
#else
#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
#  define LSEEK lseek64
#else
#  define LSEEK lseek
#endif
#endif

#if defined UNDER_CE

/* Map the Windows error number in ERROR to a locale-dependent error message
   string and return a pointer to it.  Typically, the values for ERROR come
   from GetLastError.

   The string pointed to shall not be modified by the application, but may be
   overwritten by a subsequent call to gz_strwinerror

   The gz_strwinerror function does not change the current setting of
   GetLastError. */
char ZLIB_INTERNAL *gz_strwinerror(DWORD error) {
    static char buf[1024];

    wchar_t *msgbuf;
    DWORD lasterr = GetLastError();
    DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
        NULL,
        error,
        0, /* Default language */
        (LPVOID)&msgbuf,
        0,
        NULL);
    if (chars != 0) {
        /* If there is an \r\n appended, zap it.  */
        if (chars >= 2
            && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
            chars -= 2;
            msgbuf[chars] = 0;
        }

        if (chars > sizeof (buf) - 1) {
            chars = sizeof (buf) - 1;
            msgbuf[chars] = 0;
        }

        wcstombs(buf, msgbuf, chars + 1);
        LocalFree(msgbuf);
    }
    else {
        sprintf(buf, "unknown win32 error (%ld)", error);
    }

    SetLastError(lasterr);
    return buf;
}

#endif /* UNDER_CE */

/* Reset gzip file state */
local void gz_reset(gz_statep state) {
    state->x.have = 0;              /* no output data available */
    if (state->mode == GZ_READ) {   /* for reading ... */
        state->eof = 0;             /* not at end of file */
        state->past = 0;            /* have not read past end yet */
        state->how = LOOK;          /* look for gzip header */
    }
    else                            /* for writing ... */
        state->reset = 0;           /* no deflateReset pending */
    state->seek = 0;                /* no seek request pending */
    gz_error(state, Z_OK, NULL);    /* clear error */
    state->x.pos = 0;               /* no uncompressed data yet */
    state->strm.avail_in = 0;       /* no input data yet */
}

/* Open a gzip file either by name or file descriptor. */
local gzFile gz_open(const void *path, int fd, const char *mode) {
    gz_statep state;
    z_size_t len;
    int oflag;
#ifdef O_CLOEXEC
    int cloexec = 0;
#endif
#ifdef O_EXCL
    int exclusive = 0;
#endif

    /* check input */
    if (path == NULL)
        return NULL;

    /* allocate gzFile structure to return */
    state = (gz_statep)malloc(sizeof(gz_state));
    if (state == NULL)
        return NULL;
    state->size = 0;            /* no buffers allocated yet */
    state->want = GZBUFSIZE;    /* requested buffer size */
    state->msg = NULL;          /* no error message yet */

    /* interpret mode */
    state->mode = GZ_NONE;
    state->level = Z_DEFAULT_COMPRESSION;
    state->strategy = Z_DEFAULT_STRATEGY;
    state->direct = 0;
    while (*mode) {
        if (*mode >= '0' && *mode <= '9')
            state->level = *mode - '0';
        else
            switch (*mode) {
            case 'r':
                state->mode = GZ_READ;
                break;
#ifndef NO_GZCOMPRESS
            case 'w':
                state->mode = GZ_WRITE;
                break;
            case 'a':
                state->mode = GZ_APPEND;
                break;
#endif
            case '+':       /* can't read and write at the same time */
                free(state);
                return NULL;
            case 'b':       /* ignore -- will request binary anyway */
                break;
#ifdef O_CLOEXEC
            case 'e':
                cloexec = 1;
                break;
#endif
#ifdef O_EXCL
            case 'x':
                exclusive = 1;
                break;
#endif
            case 'f':
                state->strategy = Z_FILTERED;
                break;
            case 'h':
                state->strategy = Z_HUFFMAN_ONLY;
                break;
            case 'R':
                state->strategy = Z_RLE;
                break;
            case 'F':
                state->strategy = Z_FIXED;
                break;
            case 'T':
                state->direct = 1;
                break;
            default:        /* could consider as an error, but just ignore */
                ;
            }
        mode++;
    }

    /* must provide an "r", "w", or "a" */
    if (state->mode == GZ_NONE) {
        free(state);
        return NULL;
    }

    /* can't force transparent read */
    if (state->mode == GZ_READ) {
        if (state->direct) {
            free(state);
            return NULL;
        }
        state->direct = 1;      /* for empty file */
    }

    /* save the path name for error messages */
#ifdef WIDECHAR
    if (fd == -2) {
        len = wcstombs(NULL, path, 0);
        if (len == (z_size_t)-1)
            len = 0;
    }
    else
#endif
        len = strlen((const char *)path);
    state->path = (char *)malloc(len + 1);
    if (state->path == NULL) {
        free(state);
        return NULL;
    }
#ifdef WIDECHAR
    if (fd == -2)
        if (len)
            wcstombs(state->path, path, len + 1);
        else
            *(state->path) = 0;
    else
#endif
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
        (void)snprintf(state->path, len + 1, "%s", (const char *)path);
#else
        strcpy(state->path, path);
#endif

    /* compute the flags for open() */
    oflag =
#ifdef O_LARGEFILE
        O_LARGEFILE |
#endif
#ifdef O_BINARY
        O_BINARY |
#endif
#ifdef O_CLOEXEC
        (cloexec ? O_CLOEXEC : 0) |
#endif
        (state->mode == GZ_READ ?
         O_RDONLY :
         (O_WRONLY | O_CREAT |
#ifdef O_EXCL
          (exclusive ? O_EXCL : 0) |
#endif
          (state->mode == GZ_WRITE ?
           O_TRUNC :
           O_APPEND)));

    /* open the file with the appropriate flags (or just use fd) */
    state->fd = fd > -1 ? fd : (
#ifdef WIDECHAR
        fd == -2 ? _wopen(path, oflag, 0666) :
#endif
        open((const char *)path, oflag, 0666));
    if (state->fd == -1) {
        free(state->path);
        free(state);
        return NULL;
    }
    if (state->mode == GZ_APPEND) {
        LSEEK(state->fd, 0, SEEK_END);  /* so gzoffset() is correct */
        state->mode = GZ_WRITE;         /* simplify later checks */
    }

    /* save the current position for rewinding (only if reading) */
    if (state->mode == GZ_READ) {
        state->start = LSEEK(state->fd, 0, SEEK_CUR);
        if (state->start == -1) state->start = 0;
    }

    /* initialize stream */
    gz_reset(state);

    /* return stream */
    return (gzFile)state;
}

/* -- see zlib.h -- */
gzFile ZEXPORT gzopen(const char *path, const char *mode) {
    return gz_open(path, -1, mode);
}

/* -- see zlib.h -- */
gzFile ZEXPORT gzopen64(const char *path, const char *mode) {
    return gz_open(path, -1, mode);
}

/* -- see zlib.h -- */
gzFile ZEXPORT gzdopen(int fd, const char *mode) {
    char *path;         /* identifier for error messages */
    gzFile gz;

    if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
        return NULL;
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
    (void)snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd);
#else
    sprintf(path, "<fd:%d>", fd);   /* for debugging */
#endif
    gz = gz_open(path, fd, mode);
    free(path);
    return gz;
}

/* -- see zlib.h -- */
#ifdef WIDECHAR
gzFile ZEXPORT gzopen_w(const wchar_t *path, const char *mode) {
    return gz_open(path, -2, mode);
}
#endif

/* -- see zlib.h -- */
int ZEXPORT gzbuffer(gzFile file, unsigned size) {
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return -1;

    /* make sure we haven't already allocated memory */
    if (state->size != 0)
        return -1;

    /* check and set requested size */
    if ((size << 1) < size)
        return -1;              /* need to be able to double it */
    if (size < 8)
        size = 8;               /* needed to behave well with flushing */
    state->want = size;
    return 0;
}

/* -- see zlib.h -- */
int ZEXPORT gzrewind(gzFile file) {
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;

    /* check that we're reading and that there's no error */
    if (state->mode != GZ_READ ||
            (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return -1;

    /* back up and start over */
    if (LSEEK(state->fd, state->start, SEEK_SET) == -1)
        return -1;
    gz_reset(state);
    return 0;
}

/* -- see zlib.h -- */
z_off64_t ZEXPORT gzseek64(gzFile file, z_off64_t offset, int whence) {
    unsigned n;
    z_off64_t ret;
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return -1;

    /* check that there's no error */
    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
        return -1;

    /* can only seek from start or relative to current position */
    if (whence != SEEK_SET && whence != SEEK_CUR)
        return -1;

    /* normalize offset to a SEEK_CUR specification */
    if (whence == SEEK_SET)
        offset -= state->x.pos;
    else if (state->seek)
        offset += state->skip;
    state->seek = 0;

    /* if within raw area while reading, just go there */
    if (state->mode == GZ_READ && state->how == COPY &&
            state->x.pos + offset >= 0) {
        ret = LSEEK(state->fd, offset - (z_off64_t)state->x.have, SEEK_CUR);
        if (ret == -1)
            return -1;
        state->x.have = 0;
        state->eof = 0;
        state->past = 0;
        state->seek = 0;
        gz_error(state, Z_OK, NULL);
        state->strm.avail_in = 0;
        state->x.pos += offset;
        return state->x.pos;
    }

    /* calculate skip amount, rewinding if needed for back seek when reading */
    if (offset < 0) {
        if (state->mode != GZ_READ)         /* writing -- can't go backwards */
            return -1;
        offset += state->x.pos;
        if (offset < 0)                     /* before start of file! */
            return -1;
        if (gzrewind(file) == -1)           /* rewind, then skip to offset */
            return -1;
    }

    /* if reading, skip what's in output buffer (one less gzgetc() check) */
    if (state->mode == GZ_READ) {
        n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?
            (unsigned)offset : state->x.have;
        state->x.have -= n;
        state->x.next += n;
        state->x.pos += n;
        offset -= n;
    }

    /* request skip (if not zero) */
    if (offset) {
        state->seek = 1;
        state->skip = offset;
    }
    return state->x.pos + offset;
}

/* -- see zlib.h -- */
z_off_t ZEXPORT gzseek(gzFile file, z_off_t offset, int whence) {
    z_off64_t ret;

    ret = gzseek64(file, (z_off64_t)offset, whence);
    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
}

/* -- see zlib.h -- */
z_off64_t ZEXPORT gztell64(gzFile file) {
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return -1;

    /* return position */
    return state->x.pos + (state->seek ? state->skip : 0);
}

/* -- see zlib.h -- */
z_off_t ZEXPORT gztell(gzFile file) {
    z_off64_t ret;

    ret = gztell64(file);
    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
}

/* -- see zlib.h -- */
z_off64_t ZEXPORT gzoffset64(gzFile file) {
    z_off64_t offset;
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return -1;

    /* compute and return effective offset in file */
    offset = LSEEK(state->fd, 0, SEEK_CUR);
    if (offset == -1)
        return -1;
    if (state->mode == GZ_READ)             /* reading */
        offset -= state->strm.avail_in;     /* don't count buffered input */
    return offset;
}

/* -- see zlib.h -- */
z_off_t ZEXPORT gzoffset(gzFile file) {
    z_off64_t ret;

    ret = gzoffset64(file);
    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
}

/* -- see zlib.h -- */
int ZEXPORT gzeof(gzFile file) {
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return 0;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return 0;

    /* return end-of-file state */
    return state->mode == GZ_READ ? state->past : 0;
}

/* -- see zlib.h -- */
const char * ZEXPORT gzerror(gzFile file, int *errnum) {
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return NULL;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return NULL;

    /* return error information */
    if (errnum != NULL)
        *errnum = state->err;
    return state->err == Z_MEM_ERROR ? "out of memory" :
                                       (state->msg == NULL ? "" : state->msg);
}

/* -- see zlib.h -- */
void ZEXPORT gzclearerr(gzFile file) {
    gz_statep state;

    /* get internal structure and check integrity */
    if (file == NULL)
        return;
    state = (gz_statep)file;
    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
        return;

    /* clear error and end-of-file */
    if (state->mode == GZ_READ) {
        state->eof = 0;
        state->past = 0;
    }
    gz_error(state, Z_OK, NULL);
}

/* Create an error message in allocated memory and set state->err and
   state->msg accordingly.  Free any previous error message already there.  Do
   not try to free or allocate space if the error is Z_MEM_ERROR (out of
   memory).  Simply save the error message as a static string.  If there is an
   allocation failure constructing the error message, then convert the error to
   out of memory. */
void ZLIB_INTERNAL gz_error(gz_statep state, int err, const char *msg) {
    /* free previously allocated message and clear */
    if (state->msg != NULL) {
        if (state->err != Z_MEM_ERROR)
            free(state->msg);
        state->msg = NULL;
    }

    /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */
    if (err != Z_OK && err != Z_BUF_ERROR)
        state->x.have = 0;

    /* set error code, and if no message, then done */
    state->err = err;
    if (msg == NULL)
        return;

    /* for an out of memory error, return literal string when requested */
    if (err == Z_MEM_ERROR)
        return;

    /* construct error message with path */
    if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
            NULL) {
        state->err = Z_MEM_ERROR;
        return;
    }
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
    (void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
                   "%s%s%s", state->path, ": ", msg);
#else
    strcpy(state->msg, state->path);
    strcat(state->msg, ": ");
    strcat(state->msg, msg);
#endif
}

/* portably return maximum value for an int (when limits.h presumed not
   available) -- we need to do this to cover cases where 2's complement not
   used, since C standard permits 1's complement and sign-bit representations,
   otherwise we could just use ((unsigned)-1) >> 1 */
unsigned ZLIB_INTERNAL gz_intmax(void) {
#ifdef INT_MAX
    return INT_MAX;
#else
    unsigned p = 1, q;
    do {
        q = p;
        p <<= 1;
        p++;
    } while (p > q);
    return q >> 1;
#endif
}
Added compat/zlib/gzread.c.


























































































































































































































































































































































































































































































































































































































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/* gzread.c -- zlib functions for reading gzip files
 * Copyright (C) 2004-2017 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "gzguts.h"

/* Use read() to load a buffer -- return -1 on error, otherwise 0.  Read from
   state->fd, and update state->eof, state->err, and state->msg as appropriate.
   This function needs to loop on read(), since read() is not guaranteed to
   read the number of bytes requested, depending on the type of descriptor. */
local int gz_load(gz_statep state, unsigned char *buf, unsigned len,
                  unsigned *have) {
    int ret;
    unsigned get, max = ((unsigned)-1 >> 2) + 1;

    *have = 0;
    do {
        get = len - *have;
        if (get > max)
            get = max;
        ret = read(state->fd, buf + *have, get);
        if (ret <= 0)
            break;
        *have += (unsigned)ret;
    } while (*have < len);
    if (ret < 0) {
        gz_error(state, Z_ERRNO, zstrerror());
        return -1;
    }
    if (ret == 0)
        state->eof = 1;
    return 0;
}

/* Load up input buffer and set eof flag if last data loaded -- return -1 on
   error, 0 otherwise.  Note that the eof flag is set when the end of the input
   file is reached, even though there may be unused data in the buffer.  Once
   that data has been used, no more attempts will be made to read the file.
   If strm->avail_in != 0, then the current data is moved to the beginning of
   the input buffer, and then the remainder of the buffer is loaded with the
   available data from the input file. */
local int gz_avail(gz_statep state) {
    unsigned got;
    z_streamp strm = &(state->strm);

    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
        return -1;
    if (state->eof == 0) {
        if (strm->avail_in) {       /* copy what's there to the start */
            unsigned char *p = state->in;
            unsigned const char *q = strm->next_in;
            unsigned n = strm->avail_in;
            do {
                *p++ = *q++;
            } while (--n);
        }
        if (gz_load(state, state->in + strm->avail_in,
                    state->size - strm->avail_in, &got) == -1)
            return -1;
        strm->avail_in += got;
        strm->next_in = state->in;
    }
    return 0;
}

/* Look for gzip header, set up for inflate or copy.  state->x.have must be 0.
   If this is the first time in, allocate required memory.  state->how will be
   left unchanged if there is no more input data available, will be set to COPY
   if there is no gzip header and direct copying will be performed, or it will
   be set to GZIP for decompression.  If direct copying, then leftover input
   data from the input buffer will be copied to the output buffer.  In that
   case, all further file reads will be directly to either the output buffer or
   a user buffer.  If decompressing, the inflate state will be initialized.
   gz_look() will return 0 on success or -1 on failure. */
local int gz_look(gz_statep state) {
    z_streamp strm = &(state->strm);

    /* allocate read buffers and inflate memory */
    if (state->size == 0) {
        /* allocate buffers */
        state->in = (unsigned char *)malloc(state->want);
        state->out = (unsigned char *)malloc(state->want << 1);
        if (state->in == NULL || state->out == NULL) {
            free(state->out);
            free(state->in);
            gz_error(state, Z_MEM_ERROR, "out of memory");
            return -1;
        }
        state->size = state->want;

        /* allocate inflate memory */
        state->strm.zalloc = Z_NULL;
        state->strm.zfree = Z_NULL;
        state->strm.opaque = Z_NULL;
        state->strm.avail_in = 0;
        state->strm.next_in = Z_NULL;
        if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) {    /* gunzip */
            free(state->out);
            free(state->in);
            state->size = 0;
            gz_error(state, Z_MEM_ERROR, "out of memory");
            return -1;
        }
    }

    /* get at least the magic bytes in the input buffer */
    if (strm->avail_in < 2) {
        if (gz_avail(state) == -1)
            return -1;
        if (strm->avail_in == 0)
            return 0;
    }

    /* look for gzip magic bytes -- if there, do gzip decoding (note: there is
       a logical dilemma here when considering the case of a partially written
       gzip file, to wit, if a single 31 byte is written, then we cannot tell
       whether this is a single-byte file, or just a partially written gzip
       file -- for here we assume that if a gzip file is being written, then
       the header will be written in a single operation, so that reading a
       single byte is sufficient indication that it is not a gzip file) */
    if (strm->avail_in > 1 &&
            strm->next_in[0] == 31 && strm->next_in[1] == 139) {
        inflateReset(strm);
        state->how = GZIP;
        state->direct = 0;
        return 0;
    }

    /* no gzip header -- if we were decoding gzip before, then this is trailing
       garbage.  Ignore the trailing garbage and finish. */
    if (state->direct == 0) {
        strm->avail_in = 0;
        state->eof = 1;
        state->x.have = 0;
        return 0;
    }

    /* doing raw i/o, copy any leftover input to output -- this assumes that
       the output buffer is larger than the input buffer, which also assures
       space for gzungetc() */
    state->x.next = state->out;
    memcpy(state->x.next, strm->next_in, strm->avail_in);
    state->x.have = strm->avail_in;
    strm->avail_in = 0;
    state->how = COPY;
    state->direct = 1;
    return 0;
}

/* Decompress from input to the provided next_out and avail_out in the state.
   On return, state->x.have and state->x.next point to the just decompressed
   data.  If the gzip stream completes, state->how is reset to LOOK to look for
   the next gzip stream or raw data, once state->x.have is depleted.  Returns 0
   on success, -1 on failure. */
local int gz_decomp(gz_statep state) {
    int ret = Z_OK;
    unsigned had;
    z_streamp strm = &(state->strm);

    /* fill output buffer up to end of deflate stream */
    had = strm->avail_out;
    do {
        /* get more input for inflate() */
        if (strm->avail_in == 0 && gz_avail(state) == -1)
            return -1;
        if (strm->avail_in == 0) {
            gz_error(state, Z_BUF_ERROR, "unexpected end of file");
            break;
        }

        /* decompress and handle errors */
        ret = inflate(strm, Z_NO_FLUSH);
        if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
            gz_error(state, Z_STREAM_ERROR,
                     "internal error: inflate stream corrupt");
            return -1;
        }
        if (ret == Z_MEM_ERROR) {
            gz_error(state, Z_MEM_ERROR, "out of memory");
            return -1;
        }
        if (ret == Z_DATA_ERROR) {              /* deflate stream invalid */
            gz_error(state, Z_DATA_ERROR,
                     strm->msg == NULL ? "compressed data error" : strm->msg);
            return -1;
        }
    } while (strm->avail_out && ret != Z_STREAM_END);

    /* update available output */
    state->x.have = had - strm->avail_out;
    state->x.next = strm->next_out - state->x.have;

    /* if the gzip stream completed successfully, look for another */
    if (ret == Z_STREAM_END)
        state->how = LOOK;

    /* good decompression */
    return 0;
}

/* Fetch data and put it in the output buffer.  Assumes state->x.have is 0.
   Data is either copied from the input file or decompressed from the input
   file depending on state->how.  If state->how is LOOK, then a gzip header is
   looked for to determine whether to copy or decompress.  Returns -1 on error,
   otherwise 0.  gz_fetch() will leave state->how as COPY or GZIP unless the
   end of the input file has been reached and all data has been processed.  */
local int gz_fetch(gz_statep state) {
    z_streamp strm = &(state->strm);

    do {
        switch(state->how) {
        case LOOK:      /* -> LOOK, COPY (only if never GZIP), or GZIP */
            if (gz_look(state) == -1)
                return -1;
            if (state->how == LOOK)
                return 0;
            break;
        case COPY:      /* -> COPY */
            if (gz_load(state, state->out, state->size << 1, &(state->x.have))
                    == -1)
                return -1;
            state->x.next = state->out;
            return 0;
        case GZIP:      /* -> GZIP or LOOK (if end of gzip stream) */
            strm->avail_out = state->size << 1;
            strm->next_out = state->out;
            if (gz_decomp(state) == -1)
                return -1;
        }
    } while (state->x.have == 0 && (!state->eof || strm->avail_in));
    return 0;
}

/* Skip len uncompressed bytes of output.  Return -1 on error, 0 on success. */
local int gz_skip(gz_statep state, z_off64_t len) {
    unsigned n;

    /* skip over len bytes or reach end-of-file, whichever comes first */
    while (len)
        /* skip over whatever is in output buffer */
        if (state->x.have) {
            n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ?
                (unsigned)len : state->x.have;
            state->x.have -= n;
            state->x.next += n;
            state->x.pos += n;
            len -= n;
        }

        /* output buffer empty -- return if we're at the end of the input */
        else if (state->eof && state->strm.avail_in == 0)
            break;

        /* need more data to skip -- load up output buffer */
        else {
            /* get more output, looking for header if required */
            if (gz_fetch(state) == -1)
                return -1;
        }
    return 0;
}

/* Read len bytes into buf from file, or less than len up to the end of the
   input.  Return the number of bytes read.  If zero is returned, either the
   end of file was reached, or there was an error.  state->err must be
   consulted in that case to determine which. */
local z_size_t gz_read(gz_statep state, voidp buf, z_size_t len) {
    z_size_t got;
    unsigned n;

    /* if len is zero, avoid unnecessary operations */
    if (len == 0)
        return 0;

    /* process a skip request */
    if (state->seek) {
        state->seek = 0;
        if (gz_skip(state, state->skip) == -1)
            return 0;
    }

    /* get len bytes to buf, or less than len if at the end */
    got = 0;
    do {
        /* set n to the maximum amount of len that fits in an unsigned int */
        n = (unsigned)-1;
        if (n > len)
            n = (unsigned)len;

        /* first just try copying data from the output buffer */
        if (state->x.have) {
            if (state->x.have < n)
                n = state->x.have;
            memcpy(buf, state->x.next, n);
            state->x.next += n;
            state->x.have -= n;
        }

        /* output buffer empty -- return if we're at the end of the input */
        else if (state->eof && state->strm.avail_in == 0) {
            state->past = 1;        /* tried to read past end */
            break;
        }

        /* need output data -- for small len or new stream load up our output
           buffer */
        else if (state->how == LOOK || n < (state->size << 1)) {
            /* get more output, looking for header if required */
            if (gz_fetch(state) == -1)
                return 0;
            continue;       /* no progress yet -- go back to copy above */
            /* the copy above assures that we will leave with space in the
               output buffer, allowing at least one gzungetc() to succeed */
        }

        /* large len -- read directly into user buffer */
        else if (state->how == COPY) {      /* read directly */
            if (gz_load(state, (unsigned char *)buf, n, &n) == -1)
                return 0;
        }

        /* large len -- decompress directly into user buffer */
        else {  /* state->how == GZIP */
            state->strm.avail_out = n;
            state->strm.next_out = (unsigned char *)buf;
            if (gz_decomp(state) == -1)
                return 0;
            n = state->x.have;
            state->x.have = 0;
        }

        /* update progress */
        len -= n;
        buf = (char *)buf + n;
        got += n;
        state->x.pos += n;
    } while (len);

    /* return number of bytes read into user buffer */
    return got;
}

/* -- see zlib.h -- */
int ZEXPORT gzread(gzFile file, voidp buf, unsigned len) {
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;

    /* check that we're reading and that there's no (serious) error */
    if (state->mode != GZ_READ ||
            (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return -1;

    /* since an int is returned, make sure len fits in one, otherwise return
       with an error (this avoids a flaw in the interface) */
    if ((int)len < 0) {
        gz_error(state, Z_STREAM_ERROR, "request does not fit in an int");
        return -1;
    }

    /* read len or fewer bytes to buf */
    len = (unsigned)gz_read(state, buf, len);

    /* check for an error */
    if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR)
        return -1;

    /* return the number of bytes read (this is assured to fit in an int) */
    return (int)len;
}

/* -- see zlib.h -- */
z_size_t ZEXPORT gzfread(voidp buf, z_size_t size, z_size_t nitems, gzFile file) {
    z_size_t len;
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return 0;
    state = (gz_statep)file;

    /* check that we're reading and that there's no (serious) error */
    if (state->mode != GZ_READ ||
            (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return 0;

    /* compute bytes to read -- error on overflow */
    len = nitems * size;
    if (size && len / size != nitems) {
        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
        return 0;
    }

    /* read len or fewer bytes to buf, return the number of full items read */
    return len ? gz_read(state, buf, len) / size : 0;
}

/* -- see zlib.h -- */
#ifdef Z_PREFIX_SET
#  undef z_gzgetc
#else
#  undef gzgetc
#endif
int ZEXPORT gzgetc(gzFile file) {
    unsigned char buf[1];
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;

    /* check that we're reading and that there's no (serious) error */
    if (state->mode != GZ_READ ||
        (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return -1;

    /* try output buffer (no need to check for skip request) */
    if (state->x.have) {
        state->x.have--;
        state->x.pos++;
        return *(state->x.next)++;
    }

    /* nothing there -- try gz_read() */
    return gz_read(state, buf, 1) < 1 ? -1 : buf[0];
}

int ZEXPORT gzgetc_(gzFile file) {
    return gzgetc(file);
}

/* -- see zlib.h -- */
int ZEXPORT gzungetc(int c, gzFile file) {
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;

    /* in case this was just opened, set up the input buffer */
    if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
        (void)gz_look(state);

    /* check that we're reading and that there's no (serious) error */
    if (state->mode != GZ_READ ||
        (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return -1;

    /* process a skip request */
    if (state->seek) {
        state->seek = 0;
        if (gz_skip(state, state->skip) == -1)
            return -1;
    }

    /* can't push EOF */
    if (c < 0)
        return -1;

    /* if output buffer empty, put byte at end (allows more pushing) */
    if (state->x.have == 0) {
        state->x.have = 1;
        state->x.next = state->out + (state->size << 1) - 1;
        state->x.next[0] = (unsigned char)c;
        state->x.pos--;
        state->past = 0;
        return c;
    }

    /* if no room, give up (must have already done a gzungetc()) */
    if (state->x.have == (state->size << 1)) {
        gz_error(state, Z_DATA_ERROR, "out of room to push characters");
        return -1;
    }

    /* slide output data if needed and insert byte before existing data */
    if (state->x.next == state->out) {
        unsigned char *src = state->out + state->x.have;
        unsigned char *dest = state->out + (state->size << 1);
        while (src > state->out)
            *--dest = *--src;
        state->x.next = dest;
    }
    state->x.have++;
    state->x.next--;
    state->x.next[0] = (unsigned char)c;
    state->x.pos--;
    state->past = 0;
    return c;
}

/* -- see zlib.h -- */
char * ZEXPORT gzgets(gzFile file, char *buf, int len) {
    unsigned left, n;
    char *str;
    unsigned char *eol;
    gz_statep state;

    /* check parameters and get internal structure */
    if (file == NULL || buf == NULL || len < 1)
        return NULL;
    state = (gz_statep)file;

    /* check that we're reading and that there's no (serious) error */
    if (state->mode != GZ_READ ||
        (state->err != Z_OK && state->err != Z_BUF_ERROR))
        return NULL;

    /* process a skip request */
    if (state->seek) {
        state->seek = 0;
        if (gz_skip(state, state->skip) == -1)
            return NULL;
    }

    /* copy output bytes up to new line or len - 1, whichever comes first --
       append a terminating zero to the string (we don't check for a zero in
       the contents, let the user worry about that) */
    str = buf;
    left = (unsigned)len - 1;
    if (left) do {
        /* assure that something is in the output buffer */
        if (state->x.have == 0 && gz_fetch(state) == -1)
            return NULL;                /* error */
        if (state->x.have == 0) {       /* end of file */
            state->past = 1;            /* read past end */
            break;                      /* return what we have */
        }

        /* look for end-of-line in current output buffer */
        n = state->x.have > left ? left : state->x.have;
        eol = (unsigned char *)memchr(state->x.next, '\n', n);
        if (eol != NULL)
            n = (unsigned)(eol - state->x.next) + 1;

        /* copy through end-of-line, or remainder if not found */
        memcpy(buf, state->x.next, n);
        state->x.have -= n;
        state->x.next += n;
        state->x.pos += n;
        left -= n;
        buf += n;
    } while (left && eol == NULL);

    /* return terminated string, or if nothing, end of file */
    if (buf == str)
        return NULL;
    buf[0] = 0;
    return str;
}

/* -- see zlib.h -- */
int ZEXPORT gzdirect(gzFile file) {
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return 0;
    state = (gz_statep)file;

    /* if the state is not known, but we can find out, then do so (this is
       mainly for right after a gzopen() or gzdopen()) */
    if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
        (void)gz_look(state);

    /* return 1 if transparent, 0 if processing a gzip stream */
    return state->direct;
}

/* -- see zlib.h -- */
int ZEXPORT gzclose_r(gzFile file) {
    int ret, err;
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;

    /* check that we're reading */
    if (state->mode != GZ_READ)
        return Z_STREAM_ERROR;

    /* free memory and close file */
    if (state->size) {
        inflateEnd(&(state->strm));
        free(state->out);
        free(state->in);
    }
    err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK;
    gz_error(state, Z_OK, NULL);
    free(state->path);
    ret = close(state->fd);
    free(state);
    return ret ? Z_ERRNO : err;
}
Added compat/zlib/gzwrite.c.























































































































































































































































































































































































































































































































































































































































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/* gzwrite.c -- zlib functions for writing gzip files
 * Copyright (C) 2004-2019 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "gzguts.h"

/* Initialize state for writing a gzip file.  Mark initialization by setting
   state->size to non-zero.  Return -1 on a memory allocation failure, or 0 on
   success. */
local int gz_init(gz_statep state) {
    int ret;
    z_streamp strm = &(state->strm);

    /* allocate input buffer (double size for gzprintf) */
    state->in = (unsigned char *)malloc(state->want << 1);
    if (state->in == NULL) {
        gz_error(state, Z_MEM_ERROR, "out of memory");
        return -1;
    }

    /* only need output buffer and deflate state if compressing */
    if (!state->direct) {
        /* allocate output buffer */
        state->out = (unsigned char *)malloc(state->want);
        if (state->out == NULL) {
            free(state->in);
            gz_error(state, Z_MEM_ERROR, "out of memory");
            return -1;
        }

        /* allocate deflate memory, set up for gzip compression */
        strm->zalloc = Z_NULL;
        strm->zfree = Z_NULL;
        strm->opaque = Z_NULL;
        ret = deflateInit2(strm, state->level, Z_DEFLATED,
                           MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
        if (ret != Z_OK) {
            free(state->out);
            free(state->in);
            gz_error(state, Z_MEM_ERROR, "out of memory");
            return -1;
        }
        strm->next_in = NULL;
    }

    /* mark state as initialized */
    state->size = state->want;

    /* initialize write buffer if compressing */
    if (!state->direct) {
        strm->avail_out = state->size;
        strm->next_out = state->out;
        state->x.next = strm->next_out;
    }
    return 0;
}

/* Compress whatever is at avail_in and next_in and write to the output file.
   Return -1 if there is an error writing to the output file or if gz_init()
   fails to allocate memory, otherwise 0.  flush is assumed to be a valid
   deflate() flush value.  If flush is Z_FINISH, then the deflate() state is
   reset to start a new gzip stream.  If gz->direct is true, then simply write
   to the output file without compressing, and ignore flush. */
local int gz_comp(gz_statep state, int flush) {
    int ret, writ;
    unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
    z_streamp strm = &(state->strm);

    /* allocate memory if this is the first time through */
    if (state->size == 0 && gz_init(state) == -1)
        return -1;

    /* write directly if requested */
    if (state->direct) {
        while (strm->avail_in) {
            put = strm->avail_in > max ? max : strm->avail_in;
            writ = write(state->fd, strm->next_in, put);
            if (writ < 0) {
                gz_error(state, Z_ERRNO, zstrerror());
                return -1;
            }
            strm->avail_in -= (unsigned)writ;
            strm->next_in += writ;
        }
        return 0;
    }

    /* check for a pending reset */
    if (state->reset) {
        /* don't start a new gzip member unless there is data to write */
        if (strm->avail_in == 0)
            return 0;
        deflateReset(strm);
        state->reset = 0;
    }

    /* run deflate() on provided input until it produces no more output */
    ret = Z_OK;
    do {
        /* write out current buffer contents if full, or if flushing, but if
           doing Z_FINISH then don't write until we get to Z_STREAM_END */
        if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
            (flush != Z_FINISH || ret == Z_STREAM_END))) {
            while (strm->next_out > state->x.next) {
                put = strm->next_out - state->x.next > (int)max ? max :
                      (unsigned)(strm->next_out - state->x.next);
                writ = write(state->fd, state->x.next, put);
                if (writ < 0) {
                    gz_error(state, Z_ERRNO, zstrerror());
                    return -1;
                }
                state->x.next += writ;
            }
            if (strm->avail_out == 0) {
                strm->avail_out = state->size;
                strm->next_out = state->out;
                state->x.next = state->out;
            }
        }

        /* compress */
        have = strm->avail_out;
        ret = deflate(strm, flush);
        if (ret == Z_STREAM_ERROR) {
            gz_error(state, Z_STREAM_ERROR,
                      "internal error: deflate stream corrupt");
            return -1;
        }
        have -= strm->avail_out;
    } while (have);

    /* if that completed a deflate stream, allow another to start */
    if (flush == Z_FINISH)
        state->reset = 1;

    /* all done, no errors */
    return 0;
}

/* Compress len zeros to output.  Return -1 on a write error or memory
   allocation failure by gz_comp(), or 0 on success. */
local int gz_zero(gz_statep state, z_off64_t len) {
    int first;
    unsigned n;
    z_streamp strm = &(state->strm);

    /* consume whatever's left in the input buffer */
    if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
        return -1;

    /* compress len zeros (len guaranteed > 0) */
    first = 1;
    while (len) {
        n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
            (unsigned)len : state->size;
        if (first) {
            memset(state->in, 0, n);
            first = 0;
        }
        strm->avail_in = n;
        strm->next_in = state->in;
        state->x.pos += n;
        if (gz_comp(state, Z_NO_FLUSH) == -1)
            return -1;
        len -= n;
    }
    return 0;
}

/* Write len bytes from buf to file.  Return the number of bytes written.  If
   the returned value is less than len, then there was an error. */
local z_size_t gz_write(gz_statep state, voidpc buf, z_size_t len) {
    z_size_t put = len;

    /* if len is zero, avoid unnecessary operations */
    if (len == 0)
        return 0;

    /* allocate memory if this is the first time through */
    if (state->size == 0 && gz_init(state) == -1)
        return 0;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            return 0;
    }

    /* for small len, copy to input buffer, otherwise compress directly */
    if (len < state->size) {
        /* copy to input buffer, compress when full */
        do {
            unsigned have, copy;

            if (state->strm.avail_in == 0)
                state->strm.next_in = state->in;
            have = (unsigned)((state->strm.next_in + state->strm.avail_in) -
                              state->in);
            copy = state->size - have;
            if (copy > len)
                copy = (unsigned)len;
            memcpy(state->in + have, buf, copy);
            state->strm.avail_in += copy;
            state->x.pos += copy;
            buf = (const char *)buf + copy;
            len -= copy;
            if (len && gz_comp(state, Z_NO_FLUSH) == -1)
                return 0;
        } while (len);
    }
    else {
        /* consume whatever's left in the input buffer */
        if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
            return 0;

        /* directly compress user buffer to file */
        state->strm.next_in = (z_const Bytef *)buf;
        do {
            unsigned n = (unsigned)-1;
            if (n > len)
                n = (unsigned)len;
            state->strm.avail_in = n;
            state->x.pos += n;
            if (gz_comp(state, Z_NO_FLUSH) == -1)
                return 0;
            len -= n;
        } while (len);
    }

    /* input was all buffered or compressed */
    return put;
}

/* -- see zlib.h -- */
int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len) {
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return 0;
    state = (gz_statep)file;

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return 0;

    /* since an int is returned, make sure len fits in one, otherwise return
       with an error (this avoids a flaw in the interface) */
    if ((int)len < 0) {
        gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
        return 0;
    }

    /* write len bytes from buf (the return value will fit in an int) */
    return (int)gz_write(state, buf, len);
}

/* -- see zlib.h -- */
z_size_t ZEXPORT gzfwrite(voidpc buf, z_size_t size, z_size_t nitems,
                          gzFile file) {
    z_size_t len;
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return 0;
    state = (gz_statep)file;

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return 0;

    /* compute bytes to read -- error on overflow */
    len = nitems * size;
    if (size && len / size != nitems) {
        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
        return 0;
    }

    /* write len bytes to buf, return the number of full items written */
    return len ? gz_write(state, buf, len) / size : 0;
}

/* -- see zlib.h -- */
int ZEXPORT gzputc(gzFile file, int c) {
    unsigned have;
    unsigned char buf[1];
    gz_statep state;
    z_streamp strm;

    /* get internal structure */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;
    strm = &(state->strm);

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return -1;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            return -1;
    }

    /* try writing to input buffer for speed (state->size == 0 if buffer not
       initialized) */
    if (state->size) {
        if (strm->avail_in == 0)
            strm->next_in = state->in;
        have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
        if (have < state->size) {
            state->in[have] = (unsigned char)c;
            strm->avail_in++;
            state->x.pos++;
            return c & 0xff;
        }
    }

    /* no room in buffer or not initialized, use gz_write() */
    buf[0] = (unsigned char)c;
    if (gz_write(state, buf, 1) != 1)
        return -1;
    return c & 0xff;
}

/* -- see zlib.h -- */
int ZEXPORT gzputs(gzFile file, const char *s) {
    z_size_t len, put;
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return -1;
    state = (gz_statep)file;

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return -1;

    /* write string */
    len = strlen(s);
    if ((int)len < 0 || (unsigned)len != len) {
        gz_error(state, Z_STREAM_ERROR, "string length does not fit in int");
        return -1;
    }
    put = gz_write(state, s, len);
    return put < len ? -1 : (int)len;
}

#if defined(STDC) || defined(Z_HAVE_STDARG_H)
#include <stdarg.h>

/* -- see zlib.h -- */
int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va) {
    int len;
    unsigned left;
    char *next;
    gz_statep state;
    z_streamp strm;

    /* get internal structure */
    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;
    strm = &(state->strm);

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return Z_STREAM_ERROR;

    /* make sure we have some buffer space */
    if (state->size == 0 && gz_init(state) == -1)
        return state->err;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            return state->err;
    }

    /* do the printf() into the input buffer, put length in len -- the input
       buffer is double-sized just for this function, so there is guaranteed to
       be state->size bytes available after the current contents */
    if (strm->avail_in == 0)
        strm->next_in = state->in;
    next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in);
    next[state->size - 1] = 0;
#ifdef NO_vsnprintf
#  ifdef HAS_vsprintf_void
    (void)vsprintf(next, format, va);
    for (len = 0; len < state->size; len++)
        if (next[len] == 0) break;
#  else
    len = vsprintf(next, format, va);
#  endif
#else
#  ifdef HAS_vsnprintf_void
    (void)vsnprintf(next, state->size, format, va);
    len = strlen(next);
#  else
    len = vsnprintf(next, state->size, format, va);
#  endif
#endif

    /* check that printf() results fit in buffer */
    if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0)
        return 0;

    /* update buffer and position, compress first half if past that */
    strm->avail_in += (unsigned)len;
    state->x.pos += len;
    if (strm->avail_in >= state->size) {
        left = strm->avail_in - state->size;
        strm->avail_in = state->size;
        if (gz_comp(state, Z_NO_FLUSH) == -1)
            return state->err;
        memmove(state->in, state->in + state->size, left);
        strm->next_in = state->in;
        strm->avail_in = left;
    }
    return len;
}

int ZEXPORTVA gzprintf(gzFile file, const char *format, ...) {
    va_list va;
    int ret;

    va_start(va, format);
    ret = gzvprintf(file, format, va);
    va_end(va);
    return ret;
}

#else /* !STDC && !Z_HAVE_STDARG_H */

/* -- see zlib.h -- */
int ZEXPORTVA gzprintf(gzFile file, const char *format, int a1, int a2, int a3,
                       int a4, int a5, int a6, int a7, int a8, int a9, int a10,
                       int a11, int a12, int a13, int a14, int a15, int a16,
                       int a17, int a18, int a19, int a20) {
    unsigned len, left;
    char *next;
    gz_statep state;
    z_streamp strm;

    /* get internal structure */
    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;
    strm = &(state->strm);

    /* check that can really pass pointer in ints */
    if (sizeof(int) != sizeof(void *))
        return Z_STREAM_ERROR;

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return Z_STREAM_ERROR;

    /* make sure we have some buffer space */
    if (state->size == 0 && gz_init(state) == -1)
        return state->error;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            return state->error;
    }

    /* do the printf() into the input buffer, put length in len -- the input
       buffer is double-sized just for this function, so there is guaranteed to
       be state->size bytes available after the current contents */
    if (strm->avail_in == 0)
        strm->next_in = state->in;
    next = (char *)(strm->next_in + strm->avail_in);
    next[state->size - 1] = 0;
#ifdef NO_snprintf
#  ifdef HAS_sprintf_void
    sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12,
            a13, a14, a15, a16, a17, a18, a19, a20);
    for (len = 0; len < size; len++)
        if (next[len] == 0)
            break;
#  else
    len = sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11,
                  a12, a13, a14, a15, a16, a17, a18, a19, a20);
#  endif
#else
#  ifdef HAS_snprintf_void
    snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9,
             a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
    len = strlen(next);
#  else
    len = snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8,
                   a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
#  endif
#endif

    /* check that printf() results fit in buffer */
    if (len == 0 || len >= state->size || next[state->size - 1] != 0)
        return 0;

    /* update buffer and position, compress first half if past that */
    strm->avail_in += len;
    state->x.pos += len;
    if (strm->avail_in >= state->size) {
        left = strm->avail_in - state->size;
        strm->avail_in = state->size;
        if (gz_comp(state, Z_NO_FLUSH) == -1)
            return state->err;
        memmove(state->in, state->in + state->size, left);
        strm->next_in = state->in;
        strm->avail_in = left;
    }
    return (int)len;
}

#endif

/* -- see zlib.h -- */
int ZEXPORT gzflush(gzFile file, int flush) {
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK)
        return Z_STREAM_ERROR;

    /* check flush parameter */
    if (flush < 0 || flush > Z_FINISH)
        return Z_STREAM_ERROR;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            return state->err;
    }

    /* compress remaining data with requested flush */
    (void)gz_comp(state, flush);
    return state->err;
}

/* -- see zlib.h -- */
int ZEXPORT gzsetparams(gzFile file, int level, int strategy) {
    gz_statep state;
    z_streamp strm;

    /* get internal structure */
    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;
    strm = &(state->strm);

    /* check that we're writing and that there's no error */
    if (state->mode != GZ_WRITE || state->err != Z_OK || state->direct)
        return Z_STREAM_ERROR;

    /* if no change is requested, then do nothing */
    if (level == state->level && strategy == state->strategy)
        return Z_OK;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            return state->err;
    }

    /* change compression parameters for subsequent input */
    if (state->size) {
        /* flush previous input with previous parameters before changing */
        if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1)
            return state->err;
        deflateParams(strm, level, strategy);
    }
    state->level = level;
    state->strategy = strategy;
    return Z_OK;
}

/* -- see zlib.h -- */
int ZEXPORT gzclose_w(gzFile file) {
    int ret = Z_OK;
    gz_statep state;

    /* get internal structure */
    if (file == NULL)
        return Z_STREAM_ERROR;
    state = (gz_statep)file;

    /* check that we're writing */
    if (state->mode != GZ_WRITE)
        return Z_STREAM_ERROR;

    /* check for seek request */
    if (state->seek) {
        state->seek = 0;
        if (gz_zero(state, state->skip) == -1)
            ret = state->err;
    }

    /* flush, free memory, and close file */
    if (gz_comp(state, Z_FINISH) == -1)
        ret = state->err;
    if (state->size) {
        if (!state->direct) {
            (void)deflateEnd(&(state->strm));
            free(state->out);
        }
        free(state->in);
    }
    gz_error(state, Z_OK, NULL);
    free(state->path);
    if (close(state->fd) == -1)
        ret = Z_ERRNO;
    free(state);
    return ret;
}
Added compat/zlib/infback.c.




















































































































































































































































































































































































































































































































































































































































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/* infback.c -- inflate using a call-back interface
 * Copyright (C) 1995-2022 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/*
   This code is largely copied from inflate.c.  Normally either infback.o or
   inflate.o would be linked into an application--not both.  The interface
   with inffast.c is retained so that optimized assembler-coded versions of
   inflate_fast() can be used with either inflate.c or infback.c.
 */

#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"

/*
   strm provides memory allocation functions in zalloc and zfree, or
   Z_NULL to use the library memory allocation functions.

   windowBits is in the range 8..15, and window is a user-supplied
   window and output buffer that is 2**windowBits bytes.
 */
int ZEXPORT inflateBackInit_(z_streamp strm, int windowBits,
                             unsigned char FAR *window, const char *version,
                             int stream_size) {
    struct inflate_state FAR *state;

    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
        stream_size != (int)(sizeof(z_stream)))
        return Z_VERSION_ERROR;
    if (strm == Z_NULL || window == Z_NULL ||
        windowBits < 8 || windowBits > 15)
        return Z_STREAM_ERROR;
    strm->msg = Z_NULL;                 /* in case we return an error */
    if (strm->zalloc == (alloc_func)0) {
#ifdef Z_SOLO
        return Z_STREAM_ERROR;
#else
        strm->zalloc = zcalloc;
        strm->opaque = (voidpf)0;
#endif
    }
    if (strm->zfree == (free_func)0)
#ifdef Z_SOLO
        return Z_STREAM_ERROR;
#else
    strm->zfree = zcfree;
#endif
    state = (struct inflate_state FAR *)ZALLOC(strm, 1,
                                               sizeof(struct inflate_state));
    if (state == Z_NULL) return Z_MEM_ERROR;
    Tracev((stderr, "inflate: allocated\n"));
    strm->state = (struct internal_state FAR *)state;
    state->dmax = 32768U;
    state->wbits = (uInt)windowBits;
    state->wsize = 1U << windowBits;
    state->window = window;
    state->wnext = 0;
    state->whave = 0;
    state->sane = 1;
    return Z_OK;
}

/*
   Return state with length and distance decoding tables and index sizes set to
   fixed code decoding.  Normally this returns fixed tables from inffixed.h.
   If BUILDFIXED is defined, then instead this routine builds the tables the
   first time it's called, and returns those tables the first time and
   thereafter.  This reduces the size of the code by about 2K bytes, in
   exchange for a little execution time.  However, BUILDFIXED should not be
   used for threaded applications, since the rewriting of the tables and virgin
   may not be thread-safe.
 */
local void fixedtables(struct inflate_state FAR *state) {
#ifdef BUILDFIXED
    static int virgin = 1;
    static code *lenfix, *distfix;
    static code fixed[544];

    /* build fixed huffman tables if first call (may not be thread safe) */
    if (virgin) {
        unsigned sym, bits;
        static code *next;

        /* literal/length table */
        sym = 0;
        while (sym < 144) state->lens[sym++] = 8;
        while (sym < 256) state->lens[sym++] = 9;
        while (sym < 280) state->lens[sym++] = 7;
        while (sym < 288) state->lens[sym++] = 8;
        next = fixed;
        lenfix = next;
        bits = 9;
        inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);

        /* distance table */
        sym = 0;
        while (sym < 32) state->lens[sym++] = 5;
        distfix = next;
        bits = 5;
        inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);

        /* do this just once */
        virgin = 0;
    }
#else /* !BUILDFIXED */
#   include "inffixed.h"
#endif /* BUILDFIXED */
    state->lencode = lenfix;
    state->lenbits = 9;
    state->distcode = distfix;
    state->distbits = 5;
}

/* Macros for inflateBack(): */

/* Load returned state from inflate_fast() */
#define LOAD() \
    do { \
        put = strm->next_out; \
        left = strm->avail_out; \
        next = strm->next_in; \
        have = strm->avail_in; \
        hold = state->hold; \
        bits = state->bits; \
    } while (0)

/* Set state from registers for inflate_fast() */
#define RESTORE() \
    do { \
        strm->next_out = put; \
        strm->avail_out = left; \
        strm->next_in = next; \
        strm->avail_in = have; \
        state->hold = hold; \
        state->bits = bits; \
    } while (0)

/* Clear the input bit accumulator */
#define INITBITS() \
    do { \
        hold = 0; \
        bits = 0; \
    } while (0)

/* Assure that some input is available.  If input is requested, but denied,
   then return a Z_BUF_ERROR from inflateBack(). */
#define PULL() \
    do { \
        if (have == 0) { \
            have = in(in_desc, &next); \
            if (have == 0) { \
                next = Z_NULL; \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

/* Get a byte of input into the bit accumulator, or return from inflateBack()
   with an error if there is no input available. */
#define PULLBYTE() \
    do { \
        PULL(); \
        have--; \
        hold += (unsigned long)(*next++) << bits; \
        bits += 8; \
    } while (0)

/* Assure that there are at least n bits in the bit accumulator.  If there is
   not enough available input to do that, then return from inflateBack() with
   an error. */
#define NEEDBITS(n) \
    do { \
        while (bits < (unsigned)(n)) \
            PULLBYTE(); \
    } while (0)

/* Return the low n bits of the bit accumulator (n < 16) */
#define BITS(n) \
    ((unsigned)hold & ((1U << (n)) - 1))

/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
    do { \
        hold >>= (n); \
        bits -= (unsigned)(n); \
    } while (0)

/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
    do { \
        hold >>= bits & 7; \
        bits -= bits & 7; \
    } while (0)

/* Assure that some output space is available, by writing out the window
   if it's full.  If the write fails, return from inflateBack() with a
   Z_BUF_ERROR. */
#define ROOM() \
    do { \
        if (left == 0) { \
            put = state->window; \
            left = state->wsize; \
            state->whave = left; \
            if (out(out_desc, put, left)) { \
                ret = Z_BUF_ERROR; \
                goto inf_leave; \
            } \
        } \
    } while (0)

/*
   strm provides the memory allocation functions and window buffer on input,
   and provides information on the unused input on return.  For Z_DATA_ERROR
   returns, strm will also provide an error message.

   in() and out() are the call-back input and output functions.  When
   inflateBack() needs more input, it calls in().  When inflateBack() has
   filled the window with output, or when it completes with data in the
   window, it calls out() to write out the data.  The application must not
   change the provided input until in() is called again or inflateBack()
   returns.  The application must not change the window/output buffer until
   inflateBack() returns.

   in() and out() are called with a descriptor parameter provided in the
   inflateBack() call.  This parameter can be a structure that provides the
   information required to do the read or write, as well as accumulated
   information on the input and output such as totals and check values.

   in() should return zero on failure.  out() should return non-zero on
   failure.  If either in() or out() fails, than inflateBack() returns a
   Z_BUF_ERROR.  strm->next_in can be checked for Z_NULL to see whether it
   was in() or out() that caused in the error.  Otherwise,  inflateBack()
   returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
   error, or Z_MEM_ERROR if it could not allocate memory for the state.
   inflateBack() can also return Z_STREAM_ERROR if the input parameters
   are not correct, i.e. strm is Z_NULL or the state was not initialized.
 */
int ZEXPORT inflateBack(z_streamp strm, in_func in, void FAR *in_desc,
                        out_func out, void FAR *out_desc) {
    struct inflate_state FAR *state;
    z_const unsigned char FAR *next;    /* next input */
    unsigned char FAR *put;     /* next output */
    unsigned have, left;        /* available input and output */
    unsigned long hold;         /* bit buffer */
    unsigned bits;              /* bits in bit buffer */
    unsigned copy;              /* number of stored or match bytes to copy */
    unsigned char FAR *from;    /* where to copy match bytes from */
    code here;                  /* current decoding table entry */
    code last;                  /* parent table entry */
    unsigned len;               /* length to copy for repeats, bits to drop */
    int ret;                    /* return code */
    static const unsigned short order[19] = /* permutation of code lengths */
        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};

    /* Check that the strm exists and that the state was initialized */
    if (strm == Z_NULL || strm->state == Z_NULL)
        return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;

    /* Reset the state */
    strm->msg = Z_NULL;
    state->mode = TYPE;
    state->last = 0;
    state->whave = 0;
    next = strm->next_in;
    have = next != Z_NULL ? strm->avail_in : 0;
    hold = 0;
    bits = 0;
    put = state->window;
    left = state->wsize;

    /* Inflate until end of block marked as last */
    for (;;)
        switch (state->mode) {
        case TYPE:
            /* determine and dispatch block type */
            if (state->last) {
                BYTEBITS();
                state->mode = DONE;
                break;
            }
            NEEDBITS(3);
            state->last = BITS(1);
            DROPBITS(1);
            switch (BITS(2)) {
            case 0:                             /* stored block */
                Tracev((stderr, "inflate:     stored block%s\n",
                        state->last ? " (last)" : ""));
                state->mode = STORED;
                break;
            case 1:                             /* fixed block */
                fixedtables(state);
                Tracev((stderr, "inflate:     fixed codes block%s\n",
                        state->last ? " (last)" : ""));
                state->mode = LEN;              /* decode codes */
                break;
            case 2:                             /* dynamic block */
                Tracev((stderr, "inflate:     dynamic codes block%s\n",
                        state->last ? " (last)" : ""));
                state->mode = TABLE;
                break;
            case 3:
                strm->msg = (char *)"invalid block type";
                state->mode = BAD;
            }
            DROPBITS(2);
            break;

        case STORED:
            /* get and verify stored block length */
            BYTEBITS();                         /* go to byte boundary */
            NEEDBITS(32);
            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
                strm->msg = (char *)"invalid stored block lengths";
                state->mode = BAD;
                break;
            }
            state->length = (unsigned)hold & 0xffff;
            Tracev((stderr, "inflate:       stored length %u\n",
                    state->length));
            INITBITS();

            /* copy stored block from input to output */
            while (state->length != 0) {
                copy = state->length;
                PULL();
                ROOM();
                if (copy > have) copy = have;
                if (copy > left) copy = left;
                zmemcpy(put, next, copy);
                have -= copy;
                next += copy;
                left -= copy;
                put += copy;
                state->length -= copy;
            }
            Tracev((stderr, "inflate:       stored end\n"));
            state->mode = TYPE;
            break;

        case TABLE:
            /* get dynamic table entries descriptor */
            NEEDBITS(14);
            state->nlen = BITS(5) + 257;
            DROPBITS(5);
            state->ndist = BITS(5) + 1;
            DROPBITS(5);
            state->ncode = BITS(4) + 4;
            DROPBITS(4);
#ifndef PKZIP_BUG_WORKAROUND
            if (state->nlen > 286 || state->ndist > 30) {
                strm->msg = (char *)"too many length or distance symbols";
                state->mode = BAD;
                break;
            }
#endif
            Tracev((stderr, "inflate:       table sizes ok\n"));

            /* get code length code lengths (not a typo) */
            state->have = 0;
            while (state->have < state->ncode) {
                NEEDBITS(3);
                state->lens[order[state->have++]] = (unsigned short)BITS(3);
                DROPBITS(3);
            }
            while (state->have < 19)
                state->lens[order[state->have++]] = 0;
            state->next = state->codes;
            state->lencode = (code const FAR *)(state->next);
            state->lenbits = 7;
            ret = inflate_table(CODES, state->lens, 19, &(state->next),
                                &(state->lenbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid code lengths set";
                state->mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       code lengths ok\n"));

            /* get length and distance code code lengths */
            state->have = 0;
            while (state->have < state->nlen + state->ndist) {
                for (;;) {
                    here = state->lencode[BITS(state->lenbits)];
                    if ((unsigned)(here.bits) <= bits) break;
                    PULLBYTE();
                }
                if (here.val < 16) {
                    DROPBITS(here.bits);
                    state->lens[state->have++] = here.val;
                }
                else {
                    if (here.val == 16) {
                        NEEDBITS(here.bits + 2);
                        DROPBITS(here.bits);
                        if (state->have == 0) {
                            strm->msg = (char *)"invalid bit length repeat";
                            state->mode = BAD;
                            break;
                        }
                        len = (unsigned)(state->lens[state->have - 1]);
                        copy = 3 + BITS(2);
                        DROPBITS(2);
                    }
                    else if (here.val == 17) {
                        NEEDBITS(here.bits + 3);
                        DROPBITS(here.bits);
                        len = 0;
                        copy = 3 + BITS(3);
                        DROPBITS(3);
                    }
                    else {
                        NEEDBITS(here.bits + 7);
                        DROPBITS(here.bits);
                        len = 0;
                        copy = 11 + BITS(7);
                        DROPBITS(7);
                    }
                    if (state->have + copy > state->nlen + state->ndist) {
                        strm->msg = (char *)"invalid bit length repeat";
                        state->mode = BAD;
                        break;
                    }
                    while (copy--)
                        state->lens[state->have++] = (unsigned short)len;
                }
            }

            /* handle error breaks in while */
            if (state->mode == BAD) break;

            /* check for end-of-block code (better have one) */
            if (state->lens[256] == 0) {
                strm->msg = (char *)"invalid code -- missing end-of-block";
                state->mode = BAD;
                break;
            }

            /* build code tables -- note: do not change the lenbits or distbits
               values here (9 and 6) without reading the comments in inftrees.h
               concerning the ENOUGH constants, which depend on those values */
            state->next = state->codes;
            state->lencode = (code const FAR *)(state->next);
            state->lenbits = 9;
            ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
                                &(state->lenbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid literal/lengths set";
                state->mode = BAD;
                break;
            }
            state->distcode = (code const FAR *)(state->next);
            state->distbits = 6;
            ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
                            &(state->next), &(state->distbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid distances set";
                state->mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       codes ok\n"));
            state->mode = LEN;
                /* fallthrough */

        case LEN:
            /* use inflate_fast() if we have enough input and output */
            if (have >= 6 && left >= 258) {
                RESTORE();
                if (state->whave < state->wsize)
                    state->whave = state->wsize - left;
                inflate_fast(strm, state->wsize);
                LOAD();
                break;
            }

            /* get a literal, length, or end-of-block code */
            for (;;) {
                here = state->lencode[BITS(state->lenbits)];
                if ((unsigned)(here.bits) <= bits) break;
                PULLBYTE();
            }
            if (here.op && (here.op & 0xf0) == 0) {
                last = here;
                for (;;) {
                    here = state->lencode[last.val +
                            (BITS(last.bits + last.op) >> last.bits)];
                    if ((unsigned)(last.bits + here.bits) <= bits) break;
                    PULLBYTE();
                }
                DROPBITS(last.bits);
            }
            DROPBITS(here.bits);
            state->length = (unsigned)here.val;

            /* process literal */
            if (here.op == 0) {
                Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
                        "inflate:         literal '%c'\n" :
                        "inflate:         literal 0x%02x\n", here.val));
                ROOM();
                *put++ = (unsigned char)(state->length);
                left--;
                state->mode = LEN;
                break;
            }

            /* process end of block */
            if (here.op & 32) {
                Tracevv((stderr, "inflate:         end of block\n"));
                state->mode = TYPE;
                break;
            }

            /* invalid code */
            if (here.op & 64) {
                strm->msg = (char *)"invalid literal/length code";
                state->mode = BAD;
                break;
            }

            /* length code -- get extra bits, if any */
            state->extra = (unsigned)(here.op) & 15;
            if (state->extra != 0) {
                NEEDBITS(state->extra);
                state->length += BITS(state->extra);
                DROPBITS(state->extra);
            }
            Tracevv((stderr, "inflate:         length %u\n", state->length));

            /* get distance code */
            for (;;) {
                here = state->distcode[BITS(state->distbits)];
                if ((unsigned)(here.bits) <= bits) break;
                PULLBYTE();
            }
            if ((here.op & 0xf0) == 0) {
                last = here;
                for (;;) {
                    here = state->distcode[last.val +
                            (BITS(last.bits + last.op) >> last.bits)];
                    if ((unsigned)(last.bits + here.bits) <= bits) break;
                    PULLBYTE();
                }
                DROPBITS(last.bits);
            }
            DROPBITS(here.bits);
            if (here.op & 64) {
                strm->msg = (char *)"invalid distance code";
                state->mode = BAD;
                break;
            }
            state->offset = (unsigned)here.val;

            /* get distance extra bits, if any */
            state->extra = (unsigned)(here.op) & 15;
            if (state->extra != 0) {
                NEEDBITS(state->extra);
                state->offset += BITS(state->extra);
                DROPBITS(state->extra);
            }
            if (state->offset > state->wsize - (state->whave < state->wsize ?
                                                left : 0)) {
                strm->msg = (char *)"invalid distance too far back";
                state->mode = BAD;
                break;
            }
            Tracevv((stderr, "inflate:         distance %u\n", state->offset));

            /* copy match from window to output */
            do {
                ROOM();
                copy = state->wsize - state->offset;
                if (copy < left) {
                    from = put + copy;
                    copy = left - copy;
                }
                else {
                    from = put - state->offset;
                    copy = left;
                }
                if (copy > state->length) copy = state->length;
                state->length -= copy;
                left -= copy;
                do {
                    *put++ = *from++;
                } while (--copy);
            } while (state->length != 0);
            break;

        case DONE:
            /* inflate stream terminated properly */
            ret = Z_STREAM_END;
            goto inf_leave;

        case BAD:
            ret = Z_DATA_ERROR;
            goto inf_leave;

        default:
            /* can't happen, but makes compilers happy */
            ret = Z_STREAM_ERROR;
            goto inf_leave;
        }

    /* Write leftover output and return unused input */
  inf_leave:
    if (left < state->wsize) {
        if (out(out_desc, state->window, state->wsize - left) &&
            ret == Z_STREAM_END)
            ret = Z_BUF_ERROR;
    }
    strm->next_in = next;
    strm->avail_in = have;
    return ret;
}

int ZEXPORT inflateBackEnd(z_streamp strm) {
    if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
        return Z_STREAM_ERROR;
    ZFREE(strm, strm->state);
    strm->state = Z_NULL;
    Tracev((stderr, "inflate: end\n"));
    return Z_OK;
}
Added compat/zlib/inffast.c.
































































































































































































































































































































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/* inffast.c -- fast decoding
 * Copyright (C) 1995-2017 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"

#ifdef ASMINF
#  pragma message("Assembler code may have bugs -- use at your own risk")
#else

/*
   Decode literal, length, and distance codes and write out the resulting
   literal and match bytes until either not enough input or output is
   available, an end-of-block is encountered, or a data error is encountered.
   When large enough input and output buffers are supplied to inflate(), for
   example, a 16K input buffer and a 64K output buffer, more than 95% of the
   inflate execution time is spent in this routine.

   Entry assumptions:

        state->mode == LEN
        strm->avail_in >= 6
        strm->avail_out >= 258
        start >= strm->avail_out
        state->bits < 8

   On return, state->mode is one of:

        LEN -- ran out of enough output space or enough available input
        TYPE -- reached end of block code, inflate() to interpret next block
        BAD -- error in block data

   Notes:

    - The maximum input bits used by a length/distance pair is 15 bits for the
      length code, 5 bits for the length extra, 15 bits for the distance code,
      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
      Therefore if strm->avail_in >= 6, then there is enough input to avoid
      checking for available input while decoding.

    - The maximum bytes that a single length/distance pair can output is 258
      bytes, which is the maximum length that can be coded.  inflate_fast()
      requires strm->avail_out >= 258 for each loop to avoid checking for
      output space.
 */
void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
    struct inflate_state FAR *state;
    z_const unsigned char FAR *in;      /* local strm->next_in */
    z_const unsigned char FAR *last;    /* have enough input while in < last */
    unsigned char FAR *out;     /* local strm->next_out */
    unsigned char FAR *beg;     /* inflate()'s initial strm->next_out */
    unsigned char FAR *end;     /* while out < end, enough space available */
#ifdef INFLATE_STRICT
    unsigned dmax;              /* maximum distance from zlib header */
#endif
    unsigned wsize;             /* window size or zero if not using window */
    unsigned whave;             /* valid bytes in the window */
    unsigned wnext;             /* window write index */
    unsigned char FAR *window;  /* allocated sliding window, if wsize != 0 */
    unsigned long hold;         /* local strm->hold */
    unsigned bits;              /* local strm->bits */
    code const FAR *lcode;      /* local strm->lencode */
    code const FAR *dcode;      /* local strm->distcode */
    unsigned lmask;             /* mask for first level of length codes */
    unsigned dmask;             /* mask for first level of distance codes */
    code const *here;           /* retrieved table entry */
    unsigned op;                /* code bits, operation, extra bits, or */
                                /*  window position, window bytes to copy */
    unsigned len;               /* match length, unused bytes */
    unsigned dist;              /* match distance */
    unsigned char FAR *from;    /* where to copy match from */

    /* copy state to local variables */
    state = (struct inflate_state FAR *)strm->state;
    in = strm->next_in;
    last = in + (strm->avail_in - 5);
    out = strm->next_out;
    beg = out - (start - strm->avail_out);
    end = out + (strm->avail_out - 257);
#ifdef INFLATE_STRICT
    dmax = state->dmax;
#endif
    wsize = state->wsize;
    whave = state->whave;
    wnext = state->wnext;
    window = state->window;
    hold = state->hold;
    bits = state->bits;
    lcode = state->lencode;
    dcode = state->distcode;
    lmask = (1U << state->lenbits) - 1;
    dmask = (1U << state->distbits) - 1;

    /* decode literals and length/distances until end-of-block or not enough
       input data or output space */
    do {
        if (bits < 15) {
            hold += (unsigned long)(*in++) << bits;
            bits += 8;
            hold += (unsigned long)(*in++) << bits;
            bits += 8;
        }
        here = lcode + (hold & lmask);
      dolen:
        op = (unsigned)(here->bits);
        hold >>= op;
        bits -= op;
        op = (unsigned)(here->op);
        if (op == 0) {                          /* literal */
            Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ?
                    "inflate:         literal '%c'\n" :
                    "inflate:         literal 0x%02x\n", here->val));
            *out++ = (unsigned char)(here->val);
        }
        else if (op & 16) {                     /* length base */
            len = (unsigned)(here->val);
            op &= 15;                           /* number of extra bits */
            if (op) {
                if (bits < op) {
                    hold += (unsigned long)(*in++) << bits;
                    bits += 8;
                }
                len += (unsigned)hold & ((1U << op) - 1);
                hold >>= op;
                bits -= op;
            }
            Tracevv((stderr, "inflate:         length %u\n", len));
            if (bits < 15) {
                hold += (unsigned long)(*in++) << bits;
                bits += 8;
                hold += (unsigned long)(*in++) << bits;
                bits += 8;
            }
            here = dcode + (hold & dmask);
          dodist:
            op = (unsigned)(here->bits);
            hold >>= op;
            bits -= op;
            op = (unsigned)(here->op);
            if (op & 16) {                      /* distance base */
                dist = (unsigned)(here->val);
                op &= 15;                       /* number of extra bits */
                if (bits < op) {
                    hold += (unsigned long)(*in++) << bits;
                    bits += 8;
                    if (bits < op) {
                        hold += (unsigned long)(*in++) << bits;
                        bits += 8;
                    }
                }
                dist += (unsigned)hold & ((1U << op) - 1);
#ifdef INFLATE_STRICT
                if (dist > dmax) {
                    strm->msg = (char *)"invalid distance too far back";
                    state->mode = BAD;
                    break;
                }
#endif
                hold >>= op;
                bits -= op;
                Tracevv((stderr, "inflate:         distance %u\n", dist));
                op = (unsigned)(out - beg);     /* max distance in output */
                if (dist > op) {                /* see if copy from window */
                    op = dist - op;             /* distance back in window */
                    if (op > whave) {
                        if (state->sane) {
                            strm->msg =
                                (char *)"invalid distance too far back";
                            state->mode = BAD;
                            break;
                        }
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
                        if (len <= op - whave) {
                            do {
                                *out++ = 0;
                            } while (--len);
                            continue;
                        }
                        len -= op - whave;
                        do {
                            *out++ = 0;
                        } while (--op > whave);
                        if (op == 0) {
                            from = out - dist;
                            do {
                                *out++ = *from++;
                            } while (--len);
                            continue;
                        }
#endif
                    }
                    from = window;
                    if (wnext == 0) {           /* very common case */
                        from += wsize - op;
                        if (op < len) {         /* some from window */
                            len -= op;
                            do {
                                *out++ = *from++;
                            } while (--op);
                            from = out - dist;  /* rest from output */
                        }
                    }
                    else if (wnext < op) {      /* wrap around window */
                        from += wsize + wnext - op;
                        op -= wnext;
                        if (op < len) {         /* some from end of window */
                            len -= op;
                            do {
                                *out++ = *from++;
                            } while (--op);
                            from = window;
                            if (wnext < len) {  /* some from start of window */
                                op = wnext;
                                len -= op;
                                do {
                                    *out++ = *from++;
                                } while (--op);
                                from = out - dist;      /* rest from output */
                            }
                        }
                    }
                    else {                      /* contiguous in window */
                        from += wnext - op;
                        if (op < len) {         /* some from window */
                            len -= op;
                            do {
                                *out++ = *from++;
                            } while (--op);
                            from = out - dist;  /* rest from output */
                        }
                    }
                    while (len > 2) {
                        *out++ = *from++;
                        *out++ = *from++;
                        *out++ = *from++;
                        len -= 3;
                    }
                    if (len) {
                        *out++ = *from++;
                        if (len > 1)
                            *out++ = *from++;
                    }
                }
                else {
                    from = out - dist;          /* copy direct from output */
                    do {                        /* minimum length is three */
                        *out++ = *from++;
                        *out++ = *from++;
                        *out++ = *from++;
                        len -= 3;
                    } while (len > 2);
                    if (len) {
                        *out++ = *from++;
                        if (len > 1)
                            *out++ = *from++;
                    }
                }
            }
            else if ((op & 64) == 0) {          /* 2nd level distance code */
                here = dcode + here->val + (hold & ((1U << op) - 1));
                goto dodist;
            }
            else {
                strm->msg = (char *)"invalid distance code";
                state->mode = BAD;
                break;
            }
        }
        else if ((op & 64) == 0) {              /* 2nd level length code */
            here = lcode + here->val + (hold & ((1U << op) - 1));
            goto dolen;
        }
        else if (op & 32) {                     /* end-of-block */
            Tracevv((stderr, "inflate:         end of block\n"));
            state->mode = TYPE;
            break;
        }
        else {
            strm->msg = (char *)"invalid literal/length code";
            state->mode = BAD;
            break;
        }
    } while (in < last && out < end);

    /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
    len = bits >> 3;
    in -= len;
    bits -= len << 3;
    hold &= (1U << bits) - 1;

    /* update state and return */
    strm->next_in = in;
    strm->next_out = out;
    strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
    strm->avail_out = (unsigned)(out < end ?
                                 257 + (end - out) : 257 - (out - end));
    state->hold = hold;
    state->bits = bits;
    return;
}

/*
   inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
   - Using bit fields for code structure
   - Different op definition to avoid & for extra bits (do & for table bits)
   - Three separate decoding do-loops for direct, window, and wnext == 0
   - Special case for distance > 1 copies to do overlapped load and store copy
   - Explicit branch predictions (based on measured branch probabilities)
   - Deferring match copy and interspersed it with decoding subsequent codes
   - Swapping literal/length else
   - Swapping window/direct else
   - Larger unrolled copy loops (three is about right)
   - Moving len -= 3 statement into middle of loop
 */

#endif /* !ASMINF */
Added compat/zlib/inffast.h.











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/* inffast.h -- header to use inffast.c
 * Copyright (C) 1995-2003, 2010 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start);
Added compat/zlib/inffixed.h.






























































































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    /* inffixed.h -- table for decoding fixed codes
     * Generated automatically by makefixed().
     */

    /* WARNING: this file should *not* be used by applications.
       It is part of the implementation of this library and is
       subject to change. Applications should only use zlib.h.
     */

    static const code lenfix[512] = {
        {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
        {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
        {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
        {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
        {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
        {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
        {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
        {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
        {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
        {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
        {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
        {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
        {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
        {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
        {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
        {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
        {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
        {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
        {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
        {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
        {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
        {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
        {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
        {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
        {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
        {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
        {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
        {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
        {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
        {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
        {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
        {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
        {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
        {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
        {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
        {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
        {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
        {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
        {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
        {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
        {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
        {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
        {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
        {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
        {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
        {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
        {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
        {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
        {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
        {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
        {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
        {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
        {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
        {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
        {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
        {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
        {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
        {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
        {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
        {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
        {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
        {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
        {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
        {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
        {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
        {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
        {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
        {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
        {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
        {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
        {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
        {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
        {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
        {0,9,255}
    };

    static const code distfix[32] = {
        {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
        {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
        {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
        {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
        {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
        {22,5,193},{64,5,0}
    };
Added compat/zlib/inflate.c.






















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* inflate.c -- zlib decompression
 * Copyright (C) 1995-2022 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/*
 * Change history:
 *
 * 1.2.beta0    24 Nov 2002
 * - First version -- complete rewrite of inflate to simplify code, avoid
 *   creation of window when not needed, minimize use of window when it is
 *   needed, make inffast.c even faster, implement gzip decoding, and to
 *   improve code readability and style over the previous zlib inflate code
 *
 * 1.2.beta1    25 Nov 2002
 * - Use pointers for available input and output checking in inffast.c
 * - Remove input and output counters in inffast.c
 * - Change inffast.c entry and loop from avail_in >= 7 to >= 6
 * - Remove unnecessary second byte pull from length extra in inffast.c
 * - Unroll direct copy to three copies per loop in inffast.c
 *
 * 1.2.beta2    4 Dec 2002
 * - Change external routine names to reduce potential conflicts
 * - Correct filename to inffixed.h for fixed tables in inflate.c
 * - Make hbuf[] unsigned char to match parameter type in inflate.c
 * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)
 *   to avoid negation problem on Alphas (64 bit) in inflate.c
 *
 * 1.2.beta3    22 Dec 2002
 * - Add comments on state->bits assertion in inffast.c
 * - Add comments on op field in inftrees.h
 * - Fix bug in reuse of allocated window after inflateReset()
 * - Remove bit fields--back to byte structure for speed
 * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths
 * - Change post-increments to pre-increments in inflate_fast(), PPC biased?
 * - Add compile time option, POSTINC, to use post-increments instead (Intel?)
 * - Make MATCH copy in inflate() much faster for when inflate_fast() not used
 * - Use local copies of stream next and avail values, as well as local bit
 *   buffer and bit count in inflate()--for speed when inflate_fast() not used
 *
 * 1.2.beta4    1 Jan 2003
 * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings
 * - Move a comment on output buffer sizes from inffast.c to inflate.c
 * - Add comments in inffast.c to introduce the inflate_fast() routine
 * - Rearrange window copies in inflate_fast() for speed and simplification
 * - Unroll last copy for window match in inflate_fast()
 * - Use local copies of window variables in inflate_fast() for speed
 * - Pull out common wnext == 0 case for speed in inflate_fast()
 * - Make op and len in inflate_fast() unsigned for consistency
 * - Add FAR to lcode and dcode declarations in inflate_fast()
 * - Simplified bad distance check in inflate_fast()
 * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new
 *   source file infback.c to provide a call-back interface to inflate for
 *   programs like gzip and unzip -- uses window as output buffer to avoid
 *   window copying
 *
 * 1.2.beta5    1 Jan 2003
 * - Improved inflateBack() interface to allow the caller to provide initial
 *   input in strm.
 * - Fixed stored blocks bug in inflateBack()
 *
 * 1.2.beta6    4 Jan 2003
 * - Added comments in inffast.c on effectiveness of POSTINC
 * - Typecasting all around to reduce compiler warnings
 * - Changed loops from while (1) or do {} while (1) to for (;;), again to
 *   make compilers happy
 * - Changed type of window in inflateBackInit() to unsigned char *
 *
 * 1.2.beta7    27 Jan 2003
 * - Changed many types to unsigned or unsigned short to avoid warnings
 * - Added inflateCopy() function
 *
 * 1.2.0        9 Mar 2003
 * - Changed inflateBack() interface to provide separate opaque descriptors
 *   for the in() and out() functions
 * - Changed inflateBack() argument and in_func typedef to swap the length
 *   and buffer address return values for the input function
 * - Check next_in and next_out for Z_NULL on entry to inflate()
 *
 * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.
 */

#include "zutil.h"
#include "inftrees.h"
#include "inflate.h"
#include "inffast.h"

#ifdef MAKEFIXED
#  ifndef BUILDFIXED
#    define BUILDFIXED
#  endif
#endif

local int inflateStateCheck(z_streamp strm) {
    struct inflate_state FAR *state;
    if (strm == Z_NULL ||
        strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
        return 1;
    state = (struct inflate_state FAR *)strm->state;
    if (state == Z_NULL || state->strm != strm ||
        state->mode < HEAD || state->mode > SYNC)
        return 1;
    return 0;
}

int ZEXPORT inflateResetKeep(z_streamp strm) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    strm->total_in = strm->total_out = state->total = 0;
    strm->msg = Z_NULL;
    if (state->wrap)        /* to support ill-conceived Java test suite */
        strm->adler = state->wrap & 1;
    state->mode = HEAD;
    state->last = 0;
    state->havedict = 0;
    state->flags = -1;
    state->dmax = 32768U;
    state->head = Z_NULL;
    state->hold = 0;
    state->bits = 0;
    state->lencode = state->distcode = state->next = state->codes;
    state->sane = 1;
    state->back = -1;
    Tracev((stderr, "inflate: reset\n"));
    return Z_OK;
}

int ZEXPORT inflateReset(z_streamp strm) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    state->wsize = 0;
    state->whave = 0;
    state->wnext = 0;
    return inflateResetKeep(strm);
}

int ZEXPORT inflateReset2(z_streamp strm, int windowBits) {
    int wrap;
    struct inflate_state FAR *state;

    /* get the state */
    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;

    /* extract wrap request from windowBits parameter */
    if (windowBits < 0) {
        if (windowBits < -15)
            return Z_STREAM_ERROR;
        wrap = 0;
        windowBits = -windowBits;
    }
    else {
        wrap = (windowBits >> 4) + 5;
#ifdef GUNZIP
        if (windowBits < 48)
            windowBits &= 15;
#endif
    }

    /* set number of window bits, free window if different */
    if (windowBits && (windowBits < 8 || windowBits > 15))
        return Z_STREAM_ERROR;
    if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) {
        ZFREE(strm, state->window);
        state->window = Z_NULL;
    }

    /* update state and reset the rest of it */
    state->wrap = wrap;
    state->wbits = (unsigned)windowBits;
    return inflateReset(strm);
}

int ZEXPORT inflateInit2_(z_streamp strm, int windowBits,
                          const char *version, int stream_size) {
    int ret;
    struct inflate_state FAR *state;

    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
        stream_size != (int)(sizeof(z_stream)))
        return Z_VERSION_ERROR;
    if (strm == Z_NULL) return Z_STREAM_ERROR;
    strm->msg = Z_NULL;                 /* in case we return an error */
    if (strm->zalloc == (alloc_func)0) {
#ifdef Z_SOLO
        return Z_STREAM_ERROR;
#else
        strm->zalloc = zcalloc;
        strm->opaque = (voidpf)0;
#endif
    }
    if (strm->zfree == (free_func)0)
#ifdef Z_SOLO
        return Z_STREAM_ERROR;
#else
        strm->zfree = zcfree;
#endif
    state = (struct inflate_state FAR *)
            ZALLOC(strm, 1, sizeof(struct inflate_state));
    if (state == Z_NULL) return Z_MEM_ERROR;
    Tracev((stderr, "inflate: allocated\n"));
    strm->state = (struct internal_state FAR *)state;
    state->strm = strm;
    state->window = Z_NULL;
    state->mode = HEAD;     /* to pass state test in inflateReset2() */
    ret = inflateReset2(strm, windowBits);
    if (ret != Z_OK) {
        ZFREE(strm, state);
        strm->state = Z_NULL;
    }
    return ret;
}

int ZEXPORT inflateInit_(z_streamp strm, const char *version,
                         int stream_size) {
    return inflateInit2_(strm, DEF_WBITS, version, stream_size);
}

int ZEXPORT inflatePrime(z_streamp strm, int bits, int value) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    if (bits == 0)
        return Z_OK;
    state = (struct inflate_state FAR *)strm->state;
    if (bits < 0) {
        state->hold = 0;
        state->bits = 0;
        return Z_OK;
    }
    if (bits > 16 || state->bits + (uInt)bits > 32) return Z_STREAM_ERROR;
    value &= (1L << bits) - 1;
    state->hold += (unsigned)value << state->bits;
    state->bits += (uInt)bits;
    return Z_OK;
}

/*
   Return state with length and distance decoding tables and index sizes set to
   fixed code decoding.  Normally this returns fixed tables from inffixed.h.
   If BUILDFIXED is defined, then instead this routine builds the tables the
   first time it's called, and returns those tables the first time and
   thereafter.  This reduces the size of the code by about 2K bytes, in
   exchange for a little execution time.  However, BUILDFIXED should not be
   used for threaded applications, since the rewriting of the tables and virgin
   may not be thread-safe.
 */
local void fixedtables(struct inflate_state FAR *state) {
#ifdef BUILDFIXED
    static int virgin = 1;
    static code *lenfix, *distfix;
    static code fixed[544];

    /* build fixed huffman tables if first call (may not be thread safe) */
    if (virgin) {
        unsigned sym, bits;
        static code *next;

        /* literal/length table */
        sym = 0;
        while (sym < 144) state->lens[sym++] = 8;
        while (sym < 256) state->lens[sym++] = 9;
        while (sym < 280) state->lens[sym++] = 7;
        while (sym < 288) state->lens[sym++] = 8;
        next = fixed;
        lenfix = next;
        bits = 9;
        inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);

        /* distance table */
        sym = 0;
        while (sym < 32) state->lens[sym++] = 5;
        distfix = next;
        bits = 5;
        inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);

        /* do this just once */
        virgin = 0;
    }
#else /* !BUILDFIXED */
#   include "inffixed.h"
#endif /* BUILDFIXED */
    state->lencode = lenfix;
    state->lenbits = 9;
    state->distcode = distfix;
    state->distbits = 5;
}

#ifdef MAKEFIXED
#include <stdio.h>

/*
   Write out the inffixed.h that is #include'd above.  Defining MAKEFIXED also
   defines BUILDFIXED, so the tables are built on the fly.  makefixed() writes
   those tables to stdout, which would be piped to inffixed.h.  A small program
   can simply call makefixed to do this:

    void makefixed(void);

    int main(void)
    {
        makefixed();
        return 0;
    }

   Then that can be linked with zlib built with MAKEFIXED defined and run:

    a.out > inffixed.h
 */
void makefixed(void)
{
    unsigned low, size;
    struct inflate_state state;

    fixedtables(&state);
    puts("    /* inffixed.h -- table for decoding fixed codes");
    puts("     * Generated automatically by makefixed().");
    puts("     */");
    puts("");
    puts("    /* WARNING: this file should *not* be used by applications.");
    puts("       It is part of the implementation of this library and is");
    puts("       subject to change. Applications should only use zlib.h.");
    puts("     */");
    puts("");
    size = 1U << 9;
    printf("    static const code lenfix[%u] = {", size);
    low = 0;
    for (;;) {
        if ((low % 7) == 0) printf("\n        ");
        printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
               state.lencode[low].bits, state.lencode[low].val);
        if (++low == size) break;
        putchar(',');
    }
    puts("\n    };");
    size = 1U << 5;
    printf("\n    static const code distfix[%u] = {", size);
    low = 0;
    for (;;) {
        if ((low % 6) == 0) printf("\n        ");
        printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,
               state.distcode[low].val);
        if (++low == size) break;
        putchar(',');
    }
    puts("\n    };");
}
#endif /* MAKEFIXED */

/*
   Update the window with the last wsize (normally 32K) bytes written before
   returning.  If window does not exist yet, create it.  This is only called
   when a window is already in use, or when output has been written during this
   inflate call, but the end of the deflate stream has not been reached yet.
   It is also called to create a window for dictionary data when a dictionary
   is loaded.

   Providing output buffers larger than 32K to inflate() should provide a speed
   advantage, since only the last 32K of output is copied to the sliding window
   upon return from inflate(), and since all distances after the first 32K of
   output will fall in the output data, making match copies simpler and faster.
   The advantage may be dependent on the size of the processor's data caches.
 */
local int updatewindow(z_streamp strm, const Bytef *end, unsigned copy) {
    struct inflate_state FAR *state;
    unsigned dist;

    state = (struct inflate_state FAR *)strm->state;

    /* if it hasn't been done already, allocate space for the window */
    if (state->window == Z_NULL) {
        state->window = (unsigned char FAR *)
                        ZALLOC(strm, 1U << state->wbits,
                               sizeof(unsigned char));
        if (state->window == Z_NULL) return 1;
    }

    /* if window not in use yet, initialize */
    if (state->wsize == 0) {
        state->wsize = 1U << state->wbits;
        state->wnext = 0;
        state->whave = 0;
    }

    /* copy state->wsize or less output bytes into the circular window */
    if (copy >= state->wsize) {
        zmemcpy(state->window, end - state->wsize, state->wsize);
        state->wnext = 0;
        state->whave = state->wsize;
    }
    else {
        dist = state->wsize - state->wnext;
        if (dist > copy) dist = copy;
        zmemcpy(state->window + state->wnext, end - copy, dist);
        copy -= dist;
        if (copy) {
            zmemcpy(state->window, end - copy, copy);
            state->wnext = copy;
            state->whave = state->wsize;
        }
        else {
            state->wnext += dist;
            if (state->wnext == state->wsize) state->wnext = 0;
            if (state->whave < state->wsize) state->whave += dist;
        }
    }
    return 0;
}

/* Macros for inflate(): */

/* check function to use adler32() for zlib or crc32() for gzip */
#ifdef GUNZIP
#  define UPDATE_CHECK(check, buf, len) \
    (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
#else
#  define UPDATE_CHECK(check, buf, len) adler32(check, buf, len)
#endif

/* check macros for header crc */
#ifdef GUNZIP
#  define CRC2(check, word) \
    do { \
        hbuf[0] = (unsigned char)(word); \
        hbuf[1] = (unsigned char)((word) >> 8); \
        check = crc32(check, hbuf, 2); \
    } while (0)

#  define CRC4(check, word) \
    do { \
        hbuf[0] = (unsigned char)(word); \
        hbuf[1] = (unsigned char)((word) >> 8); \
        hbuf[2] = (unsigned char)((word) >> 16); \
        hbuf[3] = (unsigned char)((word) >> 24); \
        check = crc32(check, hbuf, 4); \
    } while (0)
#endif

/* Load registers with state in inflate() for speed */
#define LOAD() \
    do { \
        put = strm->next_out; \
        left = strm->avail_out; \
        next = strm->next_in; \
        have = strm->avail_in; \
        hold = state->hold; \
        bits = state->bits; \
    } while (0)

/* Restore state from registers in inflate() */
#define RESTORE() \
    do { \
        strm->next_out = put; \
        strm->avail_out = left; \
        strm->next_in = next; \
        strm->avail_in = have; \
        state->hold = hold; \
        state->bits = bits; \
    } while (0)

/* Clear the input bit accumulator */
#define INITBITS() \
    do { \
        hold = 0; \
        bits = 0; \
    } while (0)

/* Get a byte of input into the bit accumulator, or return from inflate()
   if there is no input available. */
#define PULLBYTE() \
    do { \
        if (have == 0) goto inf_leave; \
        have--; \
        hold += (unsigned long)(*next++) << bits; \
        bits += 8; \
    } while (0)

/* Assure that there are at least n bits in the bit accumulator.  If there is
   not enough available input to do that, then return from inflate(). */
#define NEEDBITS(n) \
    do { \
        while (bits < (unsigned)(n)) \
            PULLBYTE(); \
    } while (0)

/* Return the low n bits of the bit accumulator (n < 16) */
#define BITS(n) \
    ((unsigned)hold & ((1U << (n)) - 1))

/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
    do { \
        hold >>= (n); \
        bits -= (unsigned)(n); \
    } while (0)

/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
    do { \
        hold >>= bits & 7; \
        bits -= bits & 7; \
    } while (0)

/*
   inflate() uses a state machine to process as much input data and generate as
   much output data as possible before returning.  The state machine is
   structured roughly as follows:

    for (;;) switch (state) {
    ...
    case STATEn:
        if (not enough input data or output space to make progress)
            return;
        ... make progress ...
        state = STATEm;
        break;
    ...
    }

   so when inflate() is called again, the same case is attempted again, and
   if the appropriate resources are provided, the machine proceeds to the
   next state.  The NEEDBITS() macro is usually the way the state evaluates
   whether it can proceed or should return.  NEEDBITS() does the return if
   the requested bits are not available.  The typical use of the BITS macros
   is:

        NEEDBITS(n);
        ... do something with BITS(n) ...
        DROPBITS(n);

   where NEEDBITS(n) either returns from inflate() if there isn't enough
   input left to load n bits into the accumulator, or it continues.  BITS(n)
   gives the low n bits in the accumulator.  When done, DROPBITS(n) drops
   the low n bits off the accumulator.  INITBITS() clears the accumulator
   and sets the number of available bits to zero.  BYTEBITS() discards just
   enough bits to put the accumulator on a byte boundary.  After BYTEBITS()
   and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.

   NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
   if there is no input available.  The decoding of variable length codes uses
   PULLBYTE() directly in order to pull just enough bytes to decode the next
   code, and no more.

   Some states loop until they get enough input, making sure that enough
   state information is maintained to continue the loop where it left off
   if NEEDBITS() returns in the loop.  For example, want, need, and keep
   would all have to actually be part of the saved state in case NEEDBITS()
   returns:

    case STATEw:
        while (want < need) {
            NEEDBITS(n);
            keep[want++] = BITS(n);
            DROPBITS(n);
        }
        state = STATEx;
    case STATEx:

   As shown above, if the next state is also the next case, then the break
   is omitted.

   A state may also return if there is not enough output space available to
   complete that state.  Those states are copying stored data, writing a
   literal byte, and copying a matching string.

   When returning, a "goto inf_leave" is used to update the total counters,
   update the check value, and determine whether any progress has been made
   during that inflate() call in order to return the proper return code.
   Progress is defined as a change in either strm->avail_in or strm->avail_out.
   When there is a window, goto inf_leave will update the window with the last
   output written.  If a goto inf_leave occurs in the middle of decompression
   and there is no window currently, goto inf_leave will create one and copy
   output to the window for the next call of inflate().

   In this implementation, the flush parameter of inflate() only affects the
   return code (per zlib.h).  inflate() always writes as much as possible to
   strm->next_out, given the space available and the provided input--the effect
   documented in zlib.h of Z_SYNC_FLUSH.  Furthermore, inflate() always defers
   the allocation of and copying into a sliding window until necessary, which
   provides the effect documented in zlib.h for Z_FINISH when the entire input
   stream available.  So the only thing the flush parameter actually does is:
   when flush is set to Z_FINISH, inflate() cannot return Z_OK.  Instead it
   will return Z_BUF_ERROR if it has not reached the end of the stream.
 */

int ZEXPORT inflate(z_streamp strm, int flush) {
    struct inflate_state FAR *state;
    z_const unsigned char FAR *next;    /* next input */
    unsigned char FAR *put;     /* next output */
    unsigned have, left;        /* available input and output */
    unsigned long hold;         /* bit buffer */
    unsigned bits;              /* bits in bit buffer */
    unsigned in, out;           /* save starting available input and output */
    unsigned copy;              /* number of stored or match bytes to copy */
    unsigned char FAR *from;    /* where to copy match bytes from */
    code here;                  /* current decoding table entry */
    code last;                  /* parent table entry */
    unsigned len;               /* length to copy for repeats, bits to drop */
    int ret;                    /* return code */
#ifdef GUNZIP
    unsigned char hbuf[4];      /* buffer for gzip header crc calculation */
#endif
    static const unsigned short order[19] = /* permutation of code lengths */
        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};

    if (inflateStateCheck(strm) || strm->next_out == Z_NULL ||
        (strm->next_in == Z_NULL && strm->avail_in != 0))
        return Z_STREAM_ERROR;

    state = (struct inflate_state FAR *)strm->state;
    if (state->mode == TYPE) state->mode = TYPEDO;      /* skip check */
    LOAD();
    in = have;
    out = left;
    ret = Z_OK;
    for (;;)
        switch (state->mode) {
        case HEAD:
            if (state->wrap == 0) {
                state->mode = TYPEDO;
                break;
            }
            NEEDBITS(16);
#ifdef GUNZIP
            if ((state->wrap & 2) && hold == 0x8b1f) {  /* gzip header */
                if (state->wbits == 0)
                    state->wbits = 15;
                state->check = crc32(0L, Z_NULL, 0);
                CRC2(state->check, hold);
                INITBITS();
                state->mode = FLAGS;
                break;
            }
            if (state->head != Z_NULL)
                state->head->done = -1;
            if (!(state->wrap & 1) ||   /* check if zlib header allowed */
#else
            if (
#endif
                ((BITS(8) << 8) + (hold >> 8)) % 31) {
                strm->msg = (char *)"incorrect header check";
                state->mode = BAD;
                break;
            }
            if (BITS(4) != Z_DEFLATED) {
                strm->msg = (char *)"unknown compression method";
                state->mode = BAD;
                break;
            }
            DROPBITS(4);
            len = BITS(4) + 8;
            if (state->wbits == 0)
                state->wbits = len;
            if (len > 15 || len > state->wbits) {
                strm->msg = (char *)"invalid window size";
                state->mode = BAD;
                break;
            }
            state->dmax = 1U << len;
            state->flags = 0;               /* indicate zlib header */
            Tracev((stderr, "inflate:   zlib header ok\n"));
            strm->adler = state->check = adler32(0L, Z_NULL, 0);
            state->mode = hold & 0x200 ? DICTID : TYPE;
            INITBITS();
            break;
#ifdef GUNZIP
        case FLAGS:
            NEEDBITS(16);
            state->flags = (int)(hold);
            if ((state->flags & 0xff) != Z_DEFLATED) {
                strm->msg = (char *)"unknown compression method";
                state->mode = BAD;
                break;
            }
            if (state->flags & 0xe000) {
                strm->msg = (char *)"unknown header flags set";
                state->mode = BAD;
                break;
            }
            if (state->head != Z_NULL)
                state->head->text = (int)((hold >> 8) & 1);
            if ((state->flags & 0x0200) && (state->wrap & 4))
                CRC2(state->check, hold);
            INITBITS();
            state->mode = TIME;
                /* fallthrough */
        case TIME:
            NEEDBITS(32);
            if (state->head != Z_NULL)
                state->head->time = hold;
            if ((state->flags & 0x0200) && (state->wrap & 4))
                CRC4(state->check, hold);
            INITBITS();
            state->mode = OS;
                /* fallthrough */
        case OS:
            NEEDBITS(16);
            if (state->head != Z_NULL) {
                state->head->xflags = (int)(hold & 0xff);
                state->head->os = (int)(hold >> 8);
            }
            if ((state->flags & 0x0200) && (state->wrap & 4))
                CRC2(state->check, hold);
            INITBITS();
            state->mode = EXLEN;
                /* fallthrough */
        case EXLEN:
            if (state->flags & 0x0400) {
                NEEDBITS(16);
                state->length = (unsigned)(hold);
                if (state->head != Z_NULL)
                    state->head->extra_len = (unsigned)hold;
                if ((state->flags & 0x0200) && (state->wrap & 4))
                    CRC2(state->check, hold);
                INITBITS();
            }
            else if (state->head != Z_NULL)
                state->head->extra = Z_NULL;
            state->mode = EXTRA;
                /* fallthrough */
        case EXTRA:
            if (state->flags & 0x0400) {
                copy = state->length;
                if (copy > have) copy = have;
                if (copy) {
                    if (state->head != Z_NULL &&
                        state->head->extra != Z_NULL &&
                        (len = state->head->extra_len - state->length) <
                            state->head->extra_max) {
                        zmemcpy(state->head->extra + len, next,
                                len + copy > state->head->extra_max ?
                                state->head->extra_max - len : copy);
                    }
                    if ((state->flags & 0x0200) && (state->wrap & 4))
                        state->check = crc32(state->check, next, copy);
                    have -= copy;
                    next += copy;
                    state->length -= copy;
                }
                if (state->length) goto inf_leave;
            }
            state->length = 0;
            state->mode = NAME;
                /* fallthrough */
        case NAME:
            if (state->flags & 0x0800) {
                if (have == 0) goto inf_leave;
                copy = 0;
                do {
                    len = (unsigned)(next[copy++]);
                    if (state->head != Z_NULL &&
                            state->head->name != Z_NULL &&
                            state->length < state->head->name_max)
                        state->head->name[state->length++] = (Bytef)len;
                } while (len && copy < have);
                if ((state->flags & 0x0200) && (state->wrap & 4))
                    state->check = crc32(state->check, next, copy);
                have -= copy;
                next += copy;
                if (len) goto inf_leave;
            }
            else if (state->head != Z_NULL)
                state->head->name = Z_NULL;
            state->length = 0;
            state->mode = COMMENT;
                /* fallthrough */
        case COMMENT:
            if (state->flags & 0x1000) {
                if (have == 0) goto inf_leave;
                copy = 0;
                do {
                    len = (unsigned)(next[copy++]);
                    if (state->head != Z_NULL &&
                            state->head->comment != Z_NULL &&
                            state->length < state->head->comm_max)
                        state->head->comment[state->length++] = (Bytef)len;
                } while (len && copy < have);
                if ((state->flags & 0x0200) && (state->wrap & 4))
                    state->check = crc32(state->check, next, copy);
                have -= copy;
                next += copy;
                if (len) goto inf_leave;
            }
            else if (state->head != Z_NULL)
                state->head->comment = Z_NULL;
            state->mode = HCRC;
                /* fallthrough */
        case HCRC:
            if (state->flags & 0x0200) {
                NEEDBITS(16);
                if ((state->wrap & 4) && hold != (state->check & 0xffff)) {
                    strm->msg = (char *)"header crc mismatch";
                    state->mode = BAD;
                    break;
                }
                INITBITS();
            }
            if (state->head != Z_NULL) {
                state->head->hcrc = (int)((state->flags >> 9) & 1);
                state->head->done = 1;
            }
            strm->adler = state->check = crc32(0L, Z_NULL, 0);
            state->mode = TYPE;
            break;
#endif
        case DICTID:
            NEEDBITS(32);
            strm->adler = state->check = ZSWAP32(hold);
            INITBITS();
            state->mode = DICT;
                /* fallthrough */
        case DICT:
            if (state->havedict == 0) {
                RESTORE();
                return Z_NEED_DICT;
            }
            strm->adler = state->check = adler32(0L, Z_NULL, 0);
            state->mode = TYPE;
                /* fallthrough */
        case TYPE:
            if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;
                /* fallthrough */
        case TYPEDO:
            if (state->last) {
                BYTEBITS();
                state->mode = CHECK;
                break;
            }
            NEEDBITS(3);
            state->last = BITS(1);
            DROPBITS(1);
            switch (BITS(2)) {
            case 0:                             /* stored block */
                Tracev((stderr, "inflate:     stored block%s\n",
                        state->last ? " (last)" : ""));
                state->mode = STORED;
                break;
            case 1:                             /* fixed block */
                fixedtables(state);
                Tracev((stderr, "inflate:     fixed codes block%s\n",
                        state->last ? " (last)" : ""));
                state->mode = LEN_;             /* decode codes */
                if (flush == Z_TREES) {
                    DROPBITS(2);
                    goto inf_leave;
                }
                break;
            case 2:                             /* dynamic block */
                Tracev((stderr, "inflate:     dynamic codes block%s\n",
                        state->last ? " (last)" : ""));
                state->mode = TABLE;
                break;
            case 3:
                strm->msg = (char *)"invalid block type";
                state->mode = BAD;
            }
            DROPBITS(2);
            break;
        case STORED:
            BYTEBITS();                         /* go to byte boundary */
            NEEDBITS(32);
            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
                strm->msg = (char *)"invalid stored block lengths";
                state->mode = BAD;
                break;
            }
            state->length = (unsigned)hold & 0xffff;
            Tracev((stderr, "inflate:       stored length %u\n",
                    state->length));
            INITBITS();
            state->mode = COPY_;
            if (flush == Z_TREES) goto inf_leave;
                /* fallthrough */
        case COPY_:
            state->mode = COPY;
                /* fallthrough */
        case COPY:
            copy = state->length;
            if (copy) {
                if (copy > have) copy = have;
                if (copy > left) copy = left;
                if (copy == 0) goto inf_leave;
                zmemcpy(put, next, copy);
                have -= copy;
                next += copy;
                left -= copy;
                put += copy;
                state->length -= copy;
                break;
            }
            Tracev((stderr, "inflate:       stored end\n"));
            state->mode = TYPE;
            break;
        case TABLE:
            NEEDBITS(14);
            state->nlen = BITS(5) + 257;
            DROPBITS(5);
            state->ndist = BITS(5) + 1;
            DROPBITS(5);
            state->ncode = BITS(4) + 4;
            DROPBITS(4);
#ifndef PKZIP_BUG_WORKAROUND
            if (state->nlen > 286 || state->ndist > 30) {
                strm->msg = (char *)"too many length or distance symbols";
                state->mode = BAD;
                break;
            }
#endif
            Tracev((stderr, "inflate:       table sizes ok\n"));
            state->have = 0;
            state->mode = LENLENS;
                /* fallthrough */
        case LENLENS:
            while (state->have < state->ncode) {
                NEEDBITS(3);
                state->lens[order[state->have++]] = (unsigned short)BITS(3);
                DROPBITS(3);
            }
            while (state->have < 19)
                state->lens[order[state->have++]] = 0;
            state->next = state->codes;
            state->lencode = (const code FAR *)(state->next);
            state->lenbits = 7;
            ret = inflate_table(CODES, state->lens, 19, &(state->next),
                                &(state->lenbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid code lengths set";
                state->mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       code lengths ok\n"));
            state->have = 0;
            state->mode = CODELENS;
                /* fallthrough */
        case CODELENS:
            while (state->have < state->nlen + state->ndist) {
                for (;;) {
                    here = state->lencode[BITS(state->lenbits)];
                    if ((unsigned)(here.bits) <= bits) break;
                    PULLBYTE();
                }
                if (here.val < 16) {
                    DROPBITS(here.bits);
                    state->lens[state->have++] = here.val;
                }
                else {
                    if (here.val == 16) {
                        NEEDBITS(here.bits + 2);
                        DROPBITS(here.bits);
                        if (state->have == 0) {
                            strm->msg = (char *)"invalid bit length repeat";
                            state->mode = BAD;
                            break;
                        }
                        len = state->lens[state->have - 1];
                        copy = 3 + BITS(2);
                        DROPBITS(2);
                    }
                    else if (here.val == 17) {
                        NEEDBITS(here.bits + 3);
                        DROPBITS(here.bits);
                        len = 0;
                        copy = 3 + BITS(3);
                        DROPBITS(3);
                    }
                    else {
                        NEEDBITS(here.bits + 7);
                        DROPBITS(here.bits);
                        len = 0;
                        copy = 11 + BITS(7);
                        DROPBITS(7);
                    }
                    if (state->have + copy > state->nlen + state->ndist) {
                        strm->msg = (char *)"invalid bit length repeat";
                        state->mode = BAD;
                        break;
                    }
                    while (copy--)
                        state->lens[state->have++] = (unsigned short)len;
                }
            }

            /* handle error breaks in while */
            if (state->mode == BAD) break;

            /* check for end-of-block code (better have one) */
            if (state->lens[256] == 0) {
                strm->msg = (char *)"invalid code -- missing end-of-block";
                state->mode = BAD;
                break;
            }

            /* build code tables -- note: do not change the lenbits or distbits
               values here (9 and 6) without reading the comments in inftrees.h
               concerning the ENOUGH constants, which depend on those values */
            state->next = state->codes;
            state->lencode = (const code FAR *)(state->next);
            state->lenbits = 9;
            ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
                                &(state->lenbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid literal/lengths set";
                state->mode = BAD;
                break;
            }
            state->distcode = (const code FAR *)(state->next);
            state->distbits = 6;
            ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
                            &(state->next), &(state->distbits), state->work);
            if (ret) {
                strm->msg = (char *)"invalid distances set";
                state->mode = BAD;
                break;
            }
            Tracev((stderr, "inflate:       codes ok\n"));
            state->mode = LEN_;
            if (flush == Z_TREES) goto inf_leave;
                /* fallthrough */
        case LEN_:
            state->mode = LEN;
                /* fallthrough */
        case LEN:
            if (have >= 6 && left >= 258) {
                RESTORE();
                inflate_fast(strm, out);
                LOAD();
                if (state->mode == TYPE)
                    state->back = -1;
                break;
            }
            state->back = 0;
            for (;;) {
                here = state->lencode[BITS(state->lenbits)];
                if ((unsigned)(here.bits) <= bits) break;
                PULLBYTE();
            }
            if (here.op && (here.op & 0xf0) == 0) {
                last = here;
                for (;;) {
                    here = state->lencode[last.val +
                            (BITS(last.bits + last.op) >> last.bits)];
                    if ((unsigned)(last.bits + here.bits) <= bits) break;
                    PULLBYTE();
                }
                DROPBITS(last.bits);
                state->back += last.bits;
            }
            DROPBITS(here.bits);
            state->back += here.bits;
            state->length = (unsigned)here.val;
            if ((int)(here.op) == 0) {
                Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
                        "inflate:         literal '%c'\n" :
                        "inflate:         literal 0x%02x\n", here.val));
                state->mode = LIT;
                break;
            }
            if (here.op & 32) {
                Tracevv((stderr, "inflate:         end of block\n"));
                state->back = -1;
                state->mode = TYPE;
                break;
            }
            if (here.op & 64) {
                strm->msg = (char *)"invalid literal/length code";
                state->mode = BAD;
                break;
            }
            state->extra = (unsigned)(here.op) & 15;
            state->mode = LENEXT;
                /* fallthrough */
        case LENEXT:
            if (state->extra) {
                NEEDBITS(state->extra);
                state->length += BITS(state->extra);
                DROPBITS(state->extra);
                state->back += state->extra;
            }
            Tracevv((stderr, "inflate:         length %u\n", state->length));
            state->was = state->length;
            state->mode = DIST;
                /* fallthrough */
        case DIST:
            for (;;) {
                here = state->distcode[BITS(state->distbits)];
                if ((unsigned)(here.bits) <= bits) break;
                PULLBYTE();
            }
            if ((here.op & 0xf0) == 0) {
                last = here;
                for (;;) {
                    here = state->distcode[last.val +
                            (BITS(last.bits + last.op) >> last.bits)];
                    if ((unsigned)(last.bits + here.bits) <= bits) break;
                    PULLBYTE();
                }
                DROPBITS(last.bits);
                state->back += last.bits;
            }
            DROPBITS(here.bits);
            state->back += here.bits;
            if (here.op & 64) {
                strm->msg = (char *)"invalid distance code";
                state->mode = BAD;
                break;
            }
            state->offset = (unsigned)here.val;
            state->extra = (unsigned)(here.op) & 15;
            state->mode = DISTEXT;
                /* fallthrough */
        case DISTEXT:
            if (state->extra) {
                NEEDBITS(state->extra);
                state->offset += BITS(state->extra);
                DROPBITS(state->extra);
                state->back += state->extra;
            }
#ifdef INFLATE_STRICT
            if (state->offset > state->dmax) {
                strm->msg = (char *)"invalid distance too far back";
                state->mode = BAD;
                break;
            }
#endif
            Tracevv((stderr, "inflate:         distance %u\n", state->offset));
            state->mode = MATCH;
                /* fallthrough */
        case MATCH:
            if (left == 0) goto inf_leave;
            copy = out - left;
            if (state->offset > copy) {         /* copy from window */
                copy = state->offset - copy;
                if (copy > state->whave) {
                    if (state->sane) {
                        strm->msg = (char *)"invalid distance too far back";
                        state->mode = BAD;
                        break;
                    }
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
                    Trace((stderr, "inflate.c too far\n"));
                    copy -= state->whave;
                    if (copy > state->length) copy = state->length;
                    if (copy > left) copy = left;
                    left -= copy;
                    state->length -= copy;
                    do {
                        *put++ = 0;
                    } while (--copy);
                    if (state->length == 0) state->mode = LEN;
                    break;
#endif
                }
                if (copy > state->wnext) {
                    copy -= state->wnext;
                    from = state->window + (state->wsize - copy);
                }
                else
                    from = state->window + (state->wnext - copy);
                if (copy > state->length) copy = state->length;
            }
            else {                              /* copy from output */
                from = put - state->offset;
                copy = state->length;
            }
            if (copy > left) copy = left;
            left -= copy;
            state->length -= copy;
            do {
                *put++ = *from++;
            } while (--copy);
            if (state->length == 0) state->mode = LEN;
            break;
        case LIT:
            if (left == 0) goto inf_leave;
            *put++ = (unsigned char)(state->length);
            left--;
            state->mode = LEN;
            break;
        case CHECK:
            if (state->wrap) {
                NEEDBITS(32);
                out -= left;
                strm->total_out += out;
                state->total += out;
                if ((state->wrap & 4) && out)
                    strm->adler = state->check =
                        UPDATE_CHECK(state->check, put - out, out);
                out = left;
                if ((state->wrap & 4) && (
#ifdef GUNZIP
                     state->flags ? hold :
#endif
                     ZSWAP32(hold)) != state->check) {
                    strm->msg = (char *)"incorrect data check";
                    state->mode = BAD;
                    break;
                }
                INITBITS();
                Tracev((stderr, "inflate:   check matches trailer\n"));
            }
#ifdef GUNZIP
            state->mode = LENGTH;
                /* fallthrough */
        case LENGTH:
            if (state->wrap && state->flags) {
                NEEDBITS(32);
                if ((state->wrap & 4) && hold != (state->total & 0xffffffff)) {
                    strm->msg = (char *)"incorrect length check";
                    state->mode = BAD;
                    break;
                }
                INITBITS();
                Tracev((stderr, "inflate:   length matches trailer\n"));
            }
#endif
            state->mode = DONE;
                /* fallthrough */
        case DONE:
            ret = Z_STREAM_END;
            goto inf_leave;
        case BAD:
            ret = Z_DATA_ERROR;
            goto inf_leave;
        case MEM:
            return Z_MEM_ERROR;
        case SYNC:
                /* fallthrough */
        default:
            return Z_STREAM_ERROR;
        }

    /*
       Return from inflate(), updating the total counts and the check value.
       If there was no progress during the inflate() call, return a buffer
       error.  Call updatewindow() to create and/or update the window state.
       Note: a memory error from inflate() is non-recoverable.
     */
  inf_leave:
    RESTORE();
    if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
            (state->mode < CHECK || flush != Z_FINISH)))
        if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
            state->mode = MEM;
            return Z_MEM_ERROR;
        }
    in -= strm->avail_in;
    out -= strm->avail_out;
    strm->total_in += in;
    strm->total_out += out;
    state->total += out;
    if ((state->wrap & 4) && out)
        strm->adler = state->check =
            UPDATE_CHECK(state->check, strm->next_out - out, out);
    strm->data_type = (int)state->bits + (state->last ? 64 : 0) +
                      (state->mode == TYPE ? 128 : 0) +
                      (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0);
    if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
        ret = Z_BUF_ERROR;
    return ret;
}

int ZEXPORT inflateEnd(z_streamp strm) {
    struct inflate_state FAR *state;
    if (inflateStateCheck(strm))
        return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    if (state->window != Z_NULL) ZFREE(strm, state->window);
    ZFREE(strm, strm->state);
    strm->state = Z_NULL;
    Tracev((stderr, "inflate: end\n"));
    return Z_OK;
}

int ZEXPORT inflateGetDictionary(z_streamp strm, Bytef *dictionary,
                                 uInt *dictLength) {
    struct inflate_state FAR *state;

    /* check state */
    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;

    /* copy dictionary */
    if (state->whave && dictionary != Z_NULL) {
        zmemcpy(dictionary, state->window + state->wnext,
                state->whave - state->wnext);
        zmemcpy(dictionary + state->whave - state->wnext,
                state->window, state->wnext);
    }
    if (dictLength != Z_NULL)
        *dictLength = state->whave;
    return Z_OK;
}

int ZEXPORT inflateSetDictionary(z_streamp strm, const Bytef *dictionary,
                                 uInt dictLength) {
    struct inflate_state FAR *state;
    unsigned long dictid;
    int ret;

    /* check state */
    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    if (state->wrap != 0 && state->mode != DICT)
        return Z_STREAM_ERROR;

    /* check for correct dictionary identifier */
    if (state->mode == DICT) {
        dictid = adler32(0L, Z_NULL, 0);
        dictid = adler32(dictid, dictionary, dictLength);
        if (dictid != state->check)
            return Z_DATA_ERROR;
    }

    /* copy dictionary to window using updatewindow(), which will amend the
       existing dictionary if appropriate */
    ret = updatewindow(strm, dictionary + dictLength, dictLength);
    if (ret) {
        state->mode = MEM;
        return Z_MEM_ERROR;
    }
    state->havedict = 1;
    Tracev((stderr, "inflate:   dictionary set\n"));
    return Z_OK;
}

int ZEXPORT inflateGetHeader(z_streamp strm, gz_headerp head) {
    struct inflate_state FAR *state;

    /* check state */
    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;

    /* save header structure */
    state->head = head;
    head->done = 0;
    return Z_OK;
}

/*
   Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff.  Return when found
   or when out of input.  When called, *have is the number of pattern bytes
   found in order so far, in 0..3.  On return *have is updated to the new
   state.  If on return *have equals four, then the pattern was found and the
   return value is how many bytes were read including the last byte of the
   pattern.  If *have is less than four, then the pattern has not been found
   yet and the return value is len.  In the latter case, syncsearch() can be
   called again with more data and the *have state.  *have is initialized to
   zero for the first call.
 */
local unsigned syncsearch(unsigned FAR *have, const unsigned char FAR *buf,
                          unsigned len) {
    unsigned got;
    unsigned next;

    got = *have;
    next = 0;
    while (next < len && got < 4) {
        if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
            got++;
        else if (buf[next])
            got = 0;
        else
            got = 4 - got;
        next++;
    }
    *have = got;
    return next;
}

int ZEXPORT inflateSync(z_streamp strm) {
    unsigned len;               /* number of bytes to look at or looked at */
    int flags;                  /* temporary to save header status */
    unsigned long in, out;      /* temporary to save total_in and total_out */
    unsigned char buf[4];       /* to restore bit buffer to byte string */
    struct inflate_state FAR *state;

    /* check parameters */
    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;

    /* if first time, start search in bit buffer */
    if (state->mode != SYNC) {
        state->mode = SYNC;
        state->hold >>= state->bits & 7;
        state->bits -= state->bits & 7;
        len = 0;
        while (state->bits >= 8) {
            buf[len++] = (unsigned char)(state->hold);
            state->hold >>= 8;
            state->bits -= 8;
        }
        state->have = 0;
        syncsearch(&(state->have), buf, len);
    }

    /* search available input */
    len = syncsearch(&(state->have), strm->next_in, strm->avail_in);
    strm->avail_in -= len;
    strm->next_in += len;
    strm->total_in += len;

    /* return no joy or set up to restart inflate() on a new block */
    if (state->have != 4) return Z_DATA_ERROR;
    if (state->flags == -1)
        state->wrap = 0;    /* if no header yet, treat as raw */
    else
        state->wrap &= ~4;  /* no point in computing a check value now */
    flags = state->flags;
    in = strm->total_in;  out = strm->total_out;
    inflateReset(strm);
    strm->total_in = in;  strm->total_out = out;
    state->flags = flags;
    state->mode = TYPE;
    return Z_OK;
}

/*
   Returns true if inflate is currently at the end of a block generated by
   Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
   implementation to provide an additional safety check. PPP uses
   Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored
   block. When decompressing, PPP checks that at the end of input packet,
   inflate is waiting for these length bytes.
 */
int ZEXPORT inflateSyncPoint(z_streamp strm) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    return state->mode == STORED && state->bits == 0;
}

int ZEXPORT inflateCopy(z_streamp dest, z_streamp source) {
    struct inflate_state FAR *state;
    struct inflate_state FAR *copy;
    unsigned char FAR *window;
    unsigned wsize;

    /* check input */
    if (inflateStateCheck(source) || dest == Z_NULL)
        return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)source->state;

    /* allocate space */
    copy = (struct inflate_state FAR *)
           ZALLOC(source, 1, sizeof(struct inflate_state));
    if (copy == Z_NULL) return Z_MEM_ERROR;
    window = Z_NULL;
    if (state->window != Z_NULL) {
        window = (unsigned char FAR *)
                 ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));
        if (window == Z_NULL) {
            ZFREE(source, copy);
            return Z_MEM_ERROR;
        }
    }

    /* copy state */
    zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
    zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
    copy->strm = dest;
    if (state->lencode >= state->codes &&
        state->lencode <= state->codes + ENOUGH - 1) {
        copy->lencode = copy->codes + (state->lencode - state->codes);
        copy->distcode = copy->codes + (state->distcode - state->codes);
    }
    copy->next = copy->codes + (state->next - state->codes);
    if (window != Z_NULL) {
        wsize = 1U << state->wbits;
        zmemcpy(window, state->window, wsize);
    }
    copy->window = window;
    dest->state = (struct internal_state FAR *)copy;
    return Z_OK;
}

int ZEXPORT inflateUndermine(z_streamp strm, int subvert) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
    state->sane = !subvert;
    return Z_OK;
#else
    (void)subvert;
    state->sane = 1;
    return Z_DATA_ERROR;
#endif
}

int ZEXPORT inflateValidate(z_streamp strm, int check) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
    state = (struct inflate_state FAR *)strm->state;
    if (check && state->wrap)
        state->wrap |= 4;
    else
        state->wrap &= ~4;
    return Z_OK;
}

long ZEXPORT inflateMark(z_streamp strm) {
    struct inflate_state FAR *state;

    if (inflateStateCheck(strm))
        return -(1L << 16);
    state = (struct inflate_state FAR *)strm->state;
    return (long)(((unsigned long)((long)state->back)) << 16) +
        (state->mode == COPY ? state->length :
            (state->mode == MATCH ? state->was - state->length : 0));
}

unsigned long ZEXPORT inflateCodesUsed(z_streamp strm) {
    struct inflate_state FAR *state;
    if (inflateStateCheck(strm)) return (unsigned long)-1;
    state = (struct inflate_state FAR *)strm->state;
    return (unsigned long)(state->next - state->codes);
}
Added compat/zlib/inflate.h.






























































































































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/* inflate.h -- internal inflate state definition
 * Copyright (C) 1995-2019 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* define NO_GZIP when compiling if you want to disable gzip header and
   trailer decoding by inflate().  NO_GZIP would be used to avoid linking in
   the crc code when it is not needed.  For shared libraries, gzip decoding
   should be left enabled. */
#ifndef NO_GZIP
#  define GUNZIP
#endif

/* Possible inflate modes between inflate() calls */
typedef enum {
    HEAD = 16180,   /* i: waiting for magic header */
    FLAGS,      /* i: waiting for method and flags (gzip) */
    TIME,       /* i: waiting for modification time (gzip) */
    OS,         /* i: waiting for extra flags and operating system (gzip) */
    EXLEN,      /* i: waiting for extra length (gzip) */
    EXTRA,      /* i: waiting for extra bytes (gzip) */
    NAME,       /* i: waiting for end of file name (gzip) */
    COMMENT,    /* i: waiting for end of comment (gzip) */
    HCRC,       /* i: waiting for header crc (gzip) */
    DICTID,     /* i: waiting for dictionary check value */
    DICT,       /* waiting for inflateSetDictionary() call */
        TYPE,       /* i: waiting for type bits, including last-flag bit */
        TYPEDO,     /* i: same, but skip check to exit inflate on new block */
        STORED,     /* i: waiting for stored size (length and complement) */
        COPY_,      /* i/o: same as COPY below, but only first time in */
        COPY,       /* i/o: waiting for input or output to copy stored block */
        TABLE,      /* i: waiting for dynamic block table lengths */
        LENLENS,    /* i: waiting for code length code lengths */
        CODELENS,   /* i: waiting for length/lit and distance code lengths */
            LEN_,       /* i: same as LEN below, but only first time in */
            LEN,        /* i: waiting for length/lit/eob code */
            LENEXT,     /* i: waiting for length extra bits */
            DIST,       /* i: waiting for distance code */
            DISTEXT,    /* i: waiting for distance extra bits */
            MATCH,      /* o: waiting for output space to copy string */
            LIT,        /* o: waiting for output space to write literal */
    CHECK,      /* i: waiting for 32-bit check value */
    LENGTH,     /* i: waiting for 32-bit length (gzip) */
    DONE,       /* finished check, done -- remain here until reset */
    BAD,        /* got a data error -- remain here until reset */
    MEM,        /* got an inflate() memory error -- remain here until reset */
    SYNC        /* looking for synchronization bytes to restart inflate() */
} inflate_mode;

/*
    State transitions between above modes -

    (most modes can go to BAD or MEM on error -- not shown for clarity)

    Process header:
        HEAD -> (gzip) or (zlib) or (raw)
        (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
                  HCRC -> TYPE
        (zlib) -> DICTID or TYPE
        DICTID -> DICT -> TYPE
        (raw) -> TYPEDO
    Read deflate blocks:
            TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
            STORED -> COPY_ -> COPY -> TYPE
            TABLE -> LENLENS -> CODELENS -> LEN_
            LEN_ -> LEN
    Read deflate codes in fixed or dynamic block:
                LEN -> LENEXT or LIT or TYPE
                LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
                LIT -> LEN
    Process trailer:
        CHECK -> LENGTH -> DONE
 */

/* State maintained between inflate() calls -- approximately 7K bytes, not
   including the allocated sliding window, which is up to 32K bytes. */
struct inflate_state {
    z_streamp strm;             /* pointer back to this zlib stream */
    inflate_mode mode;          /* current inflate mode */
    int last;                   /* true if processing last block */
    int wrap;                   /* bit 0 true for zlib, bit 1 true for gzip,
                                   bit 2 true to validate check value */
    int havedict;               /* true if dictionary provided */
    int flags;                  /* gzip header method and flags, 0 if zlib, or
                                   -1 if raw or no header yet */
    unsigned dmax;              /* zlib header max distance (INFLATE_STRICT) */
    unsigned long check;        /* protected copy of check value */
    unsigned long total;        /* protected copy of output count */
    gz_headerp head;            /* where to save gzip header information */
        /* sliding window */
    unsigned wbits;             /* log base 2 of requested window size */
    unsigned wsize;             /* window size or zero if not using window */
    unsigned whave;             /* valid bytes in the window */
    unsigned wnext;             /* window write index */
    unsigned char FAR *window;  /* allocated sliding window, if needed */
        /* bit accumulator */
    unsigned long hold;         /* input bit accumulator */
    unsigned bits;              /* number of bits in "in" */
        /* for string and stored block copying */
    unsigned length;            /* literal or length of data to copy */
    unsigned offset;            /* distance back to copy string from */
        /* for table and code decoding */
    unsigned extra;             /* extra bits needed */
        /* fixed and dynamic code tables */
    code const FAR *lencode;    /* starting table for length/literal codes */
    code const FAR *distcode;   /* starting table for distance codes */
    unsigned lenbits;           /* index bits for lencode */
    unsigned distbits;          /* index bits for distcode */
        /* dynamic table building */
    unsigned ncode;             /* number of code length code lengths */
    unsigned nlen;              /* number of length code lengths */
    unsigned ndist;             /* number of distance code lengths */
    unsigned have;              /* number of code lengths in lens[] */
    code FAR *next;             /* next available space in codes[] */
    unsigned short lens[320];   /* temporary storage for code lengths */
    unsigned short work[288];   /* work area for code table building */
    code codes[ENOUGH];         /* space for code tables */
    int sane;                   /* if false, allow invalid distance too far */
    int back;                   /* bits back of last unprocessed length/lit */
    unsigned was;               /* initial length of match */
};
Added compat/zlib/inftrees.c.











































































































































































































































































































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/* inftrees.c -- generate Huffman trees for efficient decoding
 * Copyright (C) 1995-2024 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "zutil.h"
#include "inftrees.h"

#define MAXBITS 15

const char inflate_copyright[] =
   " inflate 1.3.1 Copyright 1995-2024 Mark Adler ";
/*
  If you use the zlib library in a product, an acknowledgment is welcome
  in the documentation of your product. If for some reason you cannot
  include such an acknowledgment, I would appreciate that you keep this
  copyright string in the executable of your product.
 */

/*
   Build a set of tables to decode the provided canonical Huffman code.
   The code lengths are lens[0..codes-1].  The result starts at *table,
   whose indices are 0..2^bits-1.  work is a writable array of at least
   lens shorts, which is used as a work area.  type is the type of code
   to be generated, CODES, LENS, or DISTS.  On return, zero is success,
   -1 is an invalid code, and +1 means that ENOUGH isn't enough.  table
   on return points to the next available entry's address.  bits is the
   requested root table index bits, and on return it is the actual root
   table index bits.  It will differ if the request is greater than the
   longest code or if it is less than the shortest code.
 */
int ZLIB_INTERNAL inflate_table(codetype type, unsigned short FAR *lens,
                                unsigned codes, code FAR * FAR *table,
                                unsigned FAR *bits, unsigned short FAR *work) {
    unsigned len;               /* a code's length in bits */
    unsigned sym;               /* index of code symbols */
    unsigned min, max;          /* minimum and maximum code lengths */
    unsigned root;              /* number of index bits for root table */
    unsigned curr;              /* number of index bits for current table */
    unsigned drop;              /* code bits to drop for sub-table */
    int left;                   /* number of prefix codes available */
    unsigned used;              /* code entries in table used */
    unsigned huff;              /* Huffman code */
    unsigned incr;              /* for incrementing code, index */
    unsigned fill;              /* index for replicating entries */
    unsigned low;               /* low bits for current root entry */
    unsigned mask;              /* mask for low root bits */
    code here;                  /* table entry for duplication */
    code FAR *next;             /* next available space in table */
    const unsigned short FAR *base;     /* base value table to use */
    const unsigned short FAR *extra;    /* extra bits table to use */
    unsigned match;             /* use base and extra for symbol >= match */
    unsigned short count[MAXBITS+1];    /* number of codes of each length */
    unsigned short offs[MAXBITS+1];     /* offsets in table for each length */
    static const unsigned short lbase[31] = { /* Length codes 257..285 base */
        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
    static const unsigned short lext[31] = { /* Length codes 257..285 extra */
        16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 203, 77};
    static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
        8193, 12289, 16385, 24577, 0, 0};
    static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
        16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
        23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
        28, 28, 29, 29, 64, 64};

    /*
       Process a set of code lengths to create a canonical Huffman code.  The
       code lengths are lens[0..codes-1].  Each length corresponds to the
       symbols 0..codes-1.  The Huffman code is generated by first sorting the
       symbols by length from short to long, and retaining the symbol order
       for codes with equal lengths.  Then the code starts with all zero bits
       for the first code of the shortest length, and the codes are integer
       increments for the same length, and zeros are appended as the length
       increases.  For the deflate format, these bits are stored backwards
       from their more natural integer increment ordering, and so when the
       decoding tables are built in the large loop below, the integer codes
       are incremented backwards.

       This routine assumes, but does not check, that all of the entries in
       lens[] are in the range 0..MAXBITS.  The caller must assure this.
       1..MAXBITS is interpreted as that code length.  zero means that that
       symbol does not occur in this code.

       The codes are sorted by computing a count of codes for each length,
       creating from that a table of starting indices for each length in the
       sorted table, and then entering the symbols in order in the sorted
       table.  The sorted table is work[], with that space being provided by
       the caller.

       The length counts are used for other purposes as well, i.e. finding
       the minimum and maximum length codes, determining if there are any
       codes at all, checking for a valid set of lengths, and looking ahead
       at length counts to determine sub-table sizes when building the
       decoding tables.
     */

    /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
    for (len = 0; len <= MAXBITS; len++)
        count[len] = 0;
    for (sym = 0; sym < codes; sym++)
        count[lens[sym]]++;

    /* bound code lengths, force root to be within code lengths */
    root = *bits;
    for (max = MAXBITS; max >= 1; max--)
        if (count[max] != 0) break;
    if (root > max) root = max;
    if (max == 0) {                     /* no symbols to code at all */
        here.op = (unsigned char)64;    /* invalid code marker */
        here.bits = (unsigned char)1;
        here.val = (unsigned short)0;
        *(*table)++ = here;             /* make a table to force an error */
        *(*table)++ = here;
        *bits = 1;
        return 0;     /* no symbols, but wait for decoding to report error */
    }
    for (min = 1; min < max; min++)
        if (count[min] != 0) break;
    if (root < min) root = min;

    /* check for an over-subscribed or incomplete set of lengths */
    left = 1;
    for (len = 1; len <= MAXBITS; len++) {
        left <<= 1;
        left -= count[len];
        if (left < 0) return -1;        /* over-subscribed */
    }
    if (left > 0 && (type == CODES || max != 1))
        return -1;                      /* incomplete set */

    /* generate offsets into symbol table for each length for sorting */
    offs[1] = 0;
    for (len = 1; len < MAXBITS; len++)
        offs[len + 1] = offs[len] + count[len];

    /* sort symbols by length, by symbol order within each length */
    for (sym = 0; sym < codes; sym++)
        if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;

    /*
       Create and fill in decoding tables.  In this loop, the table being
       filled is at next and has curr index bits.  The code being used is huff
       with length len.  That code is converted to an index by dropping drop
       bits off of the bottom.  For codes where len is less than drop + curr,
       those top drop + curr - len bits are incremented through all values to
       fill the table with replicated entries.

       root is the number of index bits for the root table.  When len exceeds
       root, sub-tables are created pointed to by the root entry with an index
       of the low root bits of huff.  This is saved in low to check for when a
       new sub-table should be started.  drop is zero when the root table is
       being filled, and drop is root when sub-tables are being filled.

       When a new sub-table is needed, it is necessary to look ahead in the
       code lengths to determine what size sub-table is needed.  The length
       counts are used for this, and so count[] is decremented as codes are
       entered in the tables.

       used keeps track of how many table entries have been allocated from the
       provided *table space.  It is checked for LENS and DIST tables against
       the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
       the initial root table size constants.  See the comments in inftrees.h
       for more information.

       sym increments through all symbols, and the loop terminates when
       all codes of length max, i.e. all codes, have been processed.  This
       routine permits incomplete codes, so another loop after this one fills
       in the rest of the decoding tables with invalid code markers.
     */

    /* set up for code type */
    switch (type) {
    case CODES:
        base = extra = work;    /* dummy value--not used */
        match = 20;
        break;
    case LENS:
        base = lbase;
        extra = lext;
        match = 257;
        break;
    default:    /* DISTS */
        base = dbase;
        extra = dext;
        match = 0;
    }

    /* initialize state for loop */
    huff = 0;                   /* starting code */
    sym = 0;                    /* starting code symbol */
    len = min;                  /* starting code length */
    next = *table;              /* current table to fill in */
    curr = root;                /* current table index bits */
    drop = 0;                   /* current bits to drop from code for index */
    low = (unsigned)(-1);       /* trigger new sub-table when len > root */
    used = 1U << root;          /* use root table entries */
    mask = used - 1;            /* mask for comparing low */

    /* check available table space */
    if ((type == LENS && used > ENOUGH_LENS) ||
        (type == DISTS && used > ENOUGH_DISTS))
        return 1;

    /* process all codes and make table entries */
    for (;;) {
        /* create table entry */
        here.bits = (unsigned char)(len - drop);
        if (work[sym] + 1U < match) {
            here.op = (unsigned char)0;
            here.val = work[sym];
        }
        else if (work[sym] >= match) {
            here.op = (unsigned char)(extra[work[sym] - match]);
            here.val = base[work[sym] - match];
        }
        else {
            here.op = (unsigned char)(32 + 64);         /* end of block */
            here.val = 0;
        }

        /* replicate for those indices with low len bits equal to huff */
        incr = 1U << (len - drop);
        fill = 1U << curr;
        min = fill;                 /* save offset to next table */
        do {
            fill -= incr;
            next[(huff >> drop) + fill] = here;
        } while (fill != 0);

        /* backwards increment the len-bit code huff */
        incr = 1U << (len - 1);
        while (huff & incr)
            incr >>= 1;
        if (incr != 0) {
            huff &= incr - 1;
            huff += incr;
        }
        else
            huff = 0;

        /* go to next symbol, update count, len */
        sym++;
        if (--(count[len]) == 0) {
            if (len == max) break;
            len = lens[work[sym]];
        }

        /* create new sub-table if needed */
        if (len > root && (huff & mask) != low) {
            /* if first time, transition to sub-tables */
            if (drop == 0)
                drop = root;

            /* increment past last table */
            next += min;            /* here min is 1 << curr */

            /* determine length of next table */
            curr = len - drop;
            left = (int)(1 << curr);
            while (curr + drop < max) {
                left -= count[curr + drop];
                if (left <= 0) break;
                curr++;
                left <<= 1;
            }

            /* check for enough space */
            used += 1U << curr;
            if ((type == LENS && used > ENOUGH_LENS) ||
                (type == DISTS && used > ENOUGH_DISTS))
                return 1;

            /* point entry in root table to sub-table */
            low = huff & mask;
            (*table)[low].op = (unsigned char)curr;
            (*table)[low].bits = (unsigned char)root;
            (*table)[low].val = (unsigned short)(next - *table);
        }
    }

    /* fill in remaining table entry if code is incomplete (guaranteed to have
       at most one remaining entry, since if the code is incomplete, the
       maximum code length that was allowed to get this far is one bit) */
    if (huff != 0) {
        here.op = (unsigned char)64;            /* invalid code marker */
        here.bits = (unsigned char)(len - drop);
        here.val = (unsigned short)0;
        next[huff] = here;
    }

    /* set return parameters */
    *table += used;
    *bits = root;
    return 0;
}
Added compat/zlib/inftrees.h.






























































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/* inftrees.h -- header to use inftrees.c
 * Copyright (C) 1995-2005, 2010 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* Structure for decoding tables.  Each entry provides either the
   information needed to do the operation requested by the code that
   indexed that table entry, or it provides a pointer to another
   table that indexes more bits of the code.  op indicates whether
   the entry is a pointer to another table, a literal, a length or
   distance, an end-of-block, or an invalid code.  For a table
   pointer, the low four bits of op is the number of index bits of
   that table.  For a length or distance, the low four bits of op
   is the number of extra bits to get after the code.  bits is
   the number of bits in this code or part of the code to drop off
   of the bit buffer.  val is the actual byte to output in the case
   of a literal, the base length or distance, or the offset from
   the current table to the next table.  Each entry is four bytes. */
typedef struct {
    unsigned char op;           /* operation, extra bits, table bits */
    unsigned char bits;         /* bits in this part of the code */
    unsigned short val;         /* offset in table or code value */
} code;

/* op values as set by inflate_table():
    00000000 - literal
    0000tttt - table link, tttt != 0 is the number of table index bits
    0001eeee - length or distance, eeee is the number of extra bits
    01100000 - end of block
    01000000 - invalid code
 */

/* Maximum size of the dynamic table.  The maximum number of code structures is
   1444, which is the sum of 852 for literal/length codes and 592 for distance
   codes.  These values were found by exhaustive searches using the program
   examples/enough.c found in the zlib distribution.  The arguments to that
   program are the number of symbols, the initial root table size, and the
   maximum bit length of a code.  "enough 286 9 15" for literal/length codes
   returns 852, and "enough 30 6 15" for distance codes returns 592. The
   initial root table size (9 or 6) is found in the fifth argument of the
   inflate_table() calls in inflate.c and infback.c.  If the root table size is
   changed, then these maximum sizes would be need to be recalculated and
   updated. */
#define ENOUGH_LENS 852
#define ENOUGH_DISTS 592
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)

/* Type of code to build for inflate_table() */
typedef enum {
    CODES,
    LENS,
    DISTS
} codetype;

int ZLIB_INTERNAL inflate_table(codetype type, unsigned short FAR *lens,
                                unsigned codes, code FAR * FAR *table,
                                unsigned FAR *bits, unsigned short FAR *work);
Added compat/zlib/make_vms.com.



































































































































































































































































































































































































































































































































































































































































































































































































































































































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$! make libz under VMS written by
$! Martin P.J. Zinser
$!
$! In case of problems with the install you might contact me at
$! zinser@zinser.no-ip.info(preferred) or
$! martin.zinser@eurexchange.com (work)
$!
$! Make procedure history for Zlib
$!
$!------------------------------------------------------------------------------
$! Version history
$! 0.01 20060120 First version to receive a number
$! 0.02 20061008 Adapt to new Makefile.in
$! 0.03 20091224 Add support for large file check
$! 0.04 20100110 Add new gzclose, gzlib, gzread, gzwrite
$! 0.05 20100221 Exchange zlibdefs.h by zconf.h.in
$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new examples
$!               subdir path, update module search in makefile.in
$! 0.07 20120115 Triggered by work done by Alexey Chupahin completely redesigned
$!               shared image creation
$! 0.08 20120219 Make it work on VAX again, pre-load missing symbols to shared
$!               image
$! 0.09 20120305 SMS.  P1 sets builder ("MMK", "MMS", " " (built-in)).
$!               "" -> automatic, preference: MMK, MMS, built-in.
$!
$ on error then goto err_exit
$!
$ true  = 1
$ false = 0
$ tmpnam = "temp_" + f$getjpi("","pid")
$ tt = tmpnam + ".txt"
$ tc = tmpnam + ".c"
$ th = tmpnam + ".h"
$ define/nolog tconfig 'th'
$ its_decc = false
$ its_vaxc = false
$ its_gnuc = false
$ s_case   = False
$!
$! Setup variables holding "config" information
$!
$ Make    = "''p1'"
$ name     = "Zlib"
$ version  = "?.?.?"
$ v_string = "ZLIB_VERSION"
$ v_file   = "zlib.h"
$ ccopt   = "/include = []"
$ lopts   = ""
$ dnsrl   = ""
$ aconf_in_file = "zconf.h.in#zconf.h_in#zconf_h.in"
$ conf_check_string = ""
$ linkonly = false
$ optfile  = name + ".opt"
$ mapfile  = name + ".map"
$ libdefs  = ""
$ vax      = f$getsyi("HW_MODEL").lt.1024
$ axp      = f$getsyi("HW_MODEL").ge.1024 .and. f$getsyi("HW_MODEL").lt.4096
$ ia64     = f$getsyi("HW_MODEL").ge.4096
$!
$! 2012-03-05 SMS.
$! Why is this needed?  And if it is needed, why not simply ".not. vax"?
$!
$!!! if axp .or. ia64 then  set proc/parse=extended
$!
$ whoami = f$parse(f$environment("Procedure"),,,,"NO_CONCEAL")
$ mydef  = F$parse(whoami,,,"DEVICE")
$ mydir  = f$parse(whoami,,,"DIRECTORY") - "]["
$ myproc = f$parse(whoami,,,"Name") + f$parse(whoami,,,"type")
$!
$! Check for MMK/MMS
$!
$ if (Make .eqs. "")
$ then
$   If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
$   If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
$ else
$   Make = f$edit( Make, "trim")
$ endif
$!
$ gosub find_version
$!
$  open/write topt tmp.opt
$  open/write optf 'optfile'
$!
$ gosub check_opts
$!
$! Look for the compiler used
$!
$ gosub check_compiler
$ close topt
$ close optf
$!
$ if its_decc
$ then
$   ccopt = "/prefix=all" + ccopt
$   if f$trnlnm("SYS") .eqs. ""
$   then
$     if axp
$     then
$       define sys sys$library:
$     else
$       ccopt = "/decc" + ccopt
$       define sys decc$library_include:
$     endif
$   endif
$!
$! 2012-03-05 SMS.
$! Why /NAMES = AS_IS?  Why not simply ".not. vax"?  And why not on VAX?
$!
$   if axp .or. ia64
$   then
$       ccopt = ccopt + "/name=as_is/opt=(inline=speed)"
$       s_case = true
$   endif
$ endif
$ if its_vaxc .or. its_gnuc
$ then
$    if f$trnlnm("SYS").eqs."" then define sys sys$library:
$ endif
$!
$! Build a fake configure input header
$!
$ open/write conf_hin config.hin
$ write conf_hin "#undef _LARGEFILE64_SOURCE"
$ close conf_hin
$!
$!
$ i = 0
$FIND_ACONF:
$ fname = f$element(i,"#",aconf_in_file)
$ if fname .eqs. "#" then goto AMISS_ERR
$ if f$search(fname) .eqs. ""
$ then
$   i = i + 1
$   goto find_aconf
$ endif
$ open/read/err=aconf_err aconf_in 'fname'
$ open/write aconf zconf.h
$ACONF_LOOP:
$ read/end_of_file=aconf_exit aconf_in line
$ work = f$edit(line, "compress,trim")
$ if f$extract(0,6,work) .nes. "#undef"
$ then
$   if f$extract(0,12,work) .nes. "#cmakedefine"
$   then
$       write aconf line
$   endif
$ else
$   cdef = f$element(1," ",work)
$   gosub check_config
$ endif
$ goto aconf_loop
$ACONF_EXIT:
$ write aconf ""
$ write aconf "/* VMS specifics added by make_vms.com: */"
$ write aconf "#define VMS 1"
$ write aconf "#include <unistd.h>"
$ write aconf "#include <unixio.h>"
$ write aconf "#ifdef _LARGEFILE"
$ write aconf "# define off64_t __off64_t"
$ write aconf "# define fopen64 fopen"
$ write aconf "# define fseeko64 fseeko"
$ write aconf "# define lseek64 lseek"
$ write aconf "# define ftello64 ftell"
$ write aconf "#endif"
$ write aconf "#if !defined( __VAX) && (__CRTL_VER >= 70312000)"
$ write aconf "# define HAVE_VSNPRINTF"
$ write aconf "#endif"
$ close aconf_in
$ close aconf
$ if f$search("''th'") .nes. "" then delete 'th';*
$! Build the thing plain or with mms
$!
$ write sys$output "Compiling Zlib sources ..."
$ if make.eqs.""
$ then
$   if (f$search( "example.obj;*") .nes. "") then delete example.obj;*
$   if (f$search( "minigzip.obj;*") .nes. "") then delete minigzip.obj;*
$   CALL MAKE adler32.OBJ "CC ''CCOPT' adler32" -
                adler32.c zlib.h zconf.h
$   CALL MAKE compress.OBJ "CC ''CCOPT' compress" -
                compress.c zlib.h zconf.h
$   CALL MAKE crc32.OBJ "CC ''CCOPT' crc32" -
                crc32.c zlib.h zconf.h
$   CALL MAKE deflate.OBJ "CC ''CCOPT' deflate" -
                deflate.c deflate.h zutil.h zlib.h zconf.h
$   CALL MAKE gzclose.OBJ "CC ''CCOPT' gzclose" -
                gzclose.c zutil.h zlib.h zconf.h
$   CALL MAKE gzlib.OBJ "CC ''CCOPT' gzlib" -
                gzlib.c zutil.h zlib.h zconf.h
$   CALL MAKE gzread.OBJ "CC ''CCOPT' gzread" -
                gzread.c zutil.h zlib.h zconf.h
$   CALL MAKE gzwrite.OBJ "CC ''CCOPT' gzwrite" -
                gzwrite.c zutil.h zlib.h zconf.h
$   CALL MAKE infback.OBJ "CC ''CCOPT' infback" -
                infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h
$   CALL MAKE inffast.OBJ "CC ''CCOPT' inffast" -
                inffast.c zutil.h zlib.h zconf.h inffast.h
$   CALL MAKE inflate.OBJ "CC ''CCOPT' inflate" -
                inflate.c zutil.h zlib.h zconf.h infblock.h
$   CALL MAKE inftrees.OBJ "CC ''CCOPT' inftrees" -
                inftrees.c zutil.h zlib.h zconf.h inftrees.h
$   CALL MAKE trees.OBJ "CC ''CCOPT' trees" -
                trees.c deflate.h zutil.h zlib.h zconf.h
$   CALL MAKE uncompr.OBJ "CC ''CCOPT' uncompr" -
                uncompr.c zlib.h zconf.h
$   CALL MAKE zutil.OBJ "CC ''CCOPT' zutil" -
                zutil.c zutil.h zlib.h zconf.h
$   write sys$output "Building Zlib ..."
$   CALL MAKE libz.OLB "lib/crea libz.olb *.obj" *.OBJ
$   write sys$output "Building example..."
$   CALL MAKE example.OBJ "CC ''CCOPT' [.test]example" -
                [.test]example.c zlib.h zconf.h
$   call make example.exe "LINK example,libz.olb/lib" example.obj libz.olb
$   write sys$output "Building minigzip..."
$   CALL MAKE minigzip.OBJ "CC ''CCOPT' [.test]minigzip" -
              [.test]minigzip.c zlib.h zconf.h
$   call make minigzip.exe -
              "LINK minigzip,libz.olb/lib" -
              minigzip.obj libz.olb
$ else
$   gosub crea_mms
$   write sys$output "Make ''name' ''version' with ''Make' "
$   'make'
$ endif
$!
$! Create shareable image
$!
$ gosub crea_olist
$ write sys$output "Creating libzshr.exe"
$ call map_2_shopt 'mapfile' 'optfile'
$ LINK_'lopts'/SHARE=libzshr.exe modules.opt/opt,'optfile'/opt
$ write sys$output "Zlib build completed"
$ delete/nolog tmp.opt;*
$ exit
$AMISS_ERR:
$ write sys$output "No source for config.hin found."
$ write sys$output "Tried any of ''aconf_in_file'"
$ goto err_exit
$CC_ERR:
$ write sys$output "C compiler required to build ''name'"
$ goto err_exit
$ERR_EXIT:
$ set message/facil/ident/sever/text
$ close/nolog optf
$ close/nolog topt
$ close/nolog aconf_in
$ close/nolog aconf
$ close/nolog out
$ close/nolog min
$ close/nolog mod
$ close/nolog h_in
$ write sys$output "Exiting..."
$ exit 2
$!
$!
$MAKE: SUBROUTINE   !SUBROUTINE TO CHECK DEPENDENCIES
$ V = 'F$Verify(0)
$! P1 = What we are trying to make
$! P2 = Command to make it
$! P3 - P8  What it depends on
$
$ If F$Search(P1) .Eqs. "" Then Goto Makeit
$ Time = F$CvTime(F$File(P1,"RDT"))
$arg=3
$Loop:
$       Argument = P'arg
$       If Argument .Eqs. "" Then Goto Exit
$       El=0
$Loop2:
$       File = F$Element(El," ",Argument)
$       If File .Eqs. " " Then Goto Endl
$       AFile = ""
$Loop3:
$       OFile = AFile
$       AFile = F$Search(File)
$       If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl
$       If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit
$       Goto Loop3
$NextEL:
$       El = El + 1
$       Goto Loop2
$EndL:
$ arg=arg+1
$ If arg .Le. 8 Then Goto Loop
$ Goto Exit
$
$Makeit:
$ VV=F$VERIFY(0)
$ write sys$output P2
$ 'P2
$ VV='F$Verify(VV)
$Exit:
$ If V Then Set Verify
$ENDSUBROUTINE
$!------------------------------------------------------------------------------
$!
$! Check command line options and set symbols accordingly
$!
$!------------------------------------------------------------------------------
$! Version history
$! 0.01 20041206 First version to receive a number
$! 0.02 20060126 Add new "HELP" target
$ CHECK_OPTS:
$ i = 1
$ OPT_LOOP:
$ if i .lt. 9
$ then
$   cparm = f$edit(p'i',"upcase")
$!
$! Check if parameter actually contains something
$!
$   if f$edit(cparm,"trim") .nes. ""
$   then
$     if cparm .eqs. "DEBUG"
$     then
$       ccopt = ccopt + "/noopt/deb"
$       lopts = lopts + "/deb"
$     endif
$     if f$locate("CCOPT=",cparm) .lt. f$length(cparm)
$     then
$       start = f$locate("=",cparm) + 1
$       len   = f$length(cparm) - start
$       ccopt = ccopt + f$extract(start,len,cparm)
$       if f$locate("AS_IS",f$edit(ccopt,"UPCASE")) .lt. f$length(ccopt) -
          then s_case = true
$     endif
$     if cparm .eqs. "LINK" then linkonly = true
$     if f$locate("LOPTS=",cparm) .lt. f$length(cparm)
$     then
$       start = f$locate("=",cparm) + 1
$       len   = f$length(cparm) - start
$       lopts = lopts + f$extract(start,len,cparm)
$     endif
$     if f$locate("CC=",cparm) .lt. f$length(cparm)
$     then
$       start  = f$locate("=",cparm) + 1
$       len    = f$length(cparm) - start
$       cc_com = f$extract(start,len,cparm)
        if (cc_com .nes. "DECC") .and. -
           (cc_com .nes. "VAXC") .and. -
           (cc_com .nes. "GNUC")
$       then
$         write sys$output "Unsupported compiler choice ''cc_com' ignored"
$         write sys$output "Use DECC, VAXC, or GNUC instead"
$       else
$         if cc_com .eqs. "DECC" then its_decc = true
$         if cc_com .eqs. "VAXC" then its_vaxc = true
$         if cc_com .eqs. "GNUC" then its_gnuc = true
$       endif
$     endif
$     if f$locate("MAKE=",cparm) .lt. f$length(cparm)
$     then
$       start  = f$locate("=",cparm) + 1
$       len    = f$length(cparm) - start
$       mmks = f$extract(start,len,cparm)
$       if (mmks .eqs. "MMK") .or. (mmks .eqs. "MMS")
$       then
$         make = mmks
$       else
$         write sys$output "Unsupported make choice ''mmks' ignored"
$         write sys$output "Use MMK or MMS instead"
$       endif
$     endif
$     if cparm .eqs. "HELP" then gosub bhelp
$   endif
$   i = i + 1
$   goto opt_loop
$ endif
$ return
$!------------------------------------------------------------------------------
$!
$! Look for the compiler used
$!
$! Version history
$! 0.01 20040223 First version to receive a number
$! 0.02 20040229 Save/set value of decc$no_rooted_search_lists
$! 0.03 20060202 Extend handling of GNU C
$! 0.04 20090402 Compaq -> hp
$CHECK_COMPILER:
$ if (.not. (its_decc .or. its_vaxc .or. its_gnuc))
$ then
$   its_decc = (f$search("SYS$SYSTEM:DECC$COMPILER.EXE") .nes. "")
$   its_vaxc = .not. its_decc .and. (F$Search("SYS$System:VAXC.Exe") .nes. "")
$   its_gnuc = .not. (its_decc .or. its_vaxc) .and. (f$trnlnm("gnu_cc") .nes. "")
$ endif
$!
$! Exit if no compiler available
$!
$ if (.not. (its_decc .or. its_vaxc .or. its_gnuc))
$ then goto CC_ERR
$ else
$   if its_decc
$   then
$     write sys$output "CC compiler check ... hp C"
$     if f$trnlnm("decc$no_rooted_search_lists") .nes. ""
$     then
$       dnrsl = f$trnlnm("decc$no_rooted_search_lists")
$     endif
$     define/nolog decc$no_rooted_search_lists 1
$   else
$     if its_vaxc then write sys$output "CC compiler check ... VAX C"
$     if its_gnuc
$     then
$         write sys$output "CC compiler check ... GNU C"
$         if f$trnlnm(topt) then write topt "gnu_cc:[000000]gcclib.olb/lib"
$         if f$trnlnm(optf) then write optf "gnu_cc:[000000]gcclib.olb/lib"
$         cc = "gcc"
$     endif
$     if f$trnlnm(topt) then write topt "sys$share:vaxcrtl.exe/share"
$     if f$trnlnm(optf) then write optf "sys$share:vaxcrtl.exe/share"
$   endif
$ endif
$ return
$!------------------------------------------------------------------------------
$!
$! If MMS/MMK are available dump out the descrip.mms if required
$!
$CREA_MMS:
$ write sys$output "Creating descrip.mms..."
$ create descrip.mms
$ open/append out descrip.mms
$ copy sys$input: out
$ deck
# descrip.mms: MMS description file for building zlib on VMS
# written by Martin P.J. Zinser
# <zinser@zinser.no-ip.info or martin.zinser@eurexchange.com>

OBJS = adler32.obj, compress.obj, crc32.obj, gzclose.obj, gzlib.obj\
       gzread.obj, gzwrite.obj, uncompr.obj, infback.obj\
       deflate.obj, trees.obj, zutil.obj, inflate.obj, \
       inftrees.obj, inffast.obj

$ eod
$ write out "CFLAGS=", ccopt
$ write out "LOPTS=", lopts
$ write out "all : example.exe minigzip.exe libz.olb"
$ copy sys$input: out
$ deck
        @ write sys$output " Example applications available"

libz.olb : libz.olb($(OBJS))
	@ write sys$output " libz available"

example.exe : example.obj libz.olb
              link $(LOPTS) example,libz.olb/lib

minigzip.exe : minigzip.obj libz.olb
              link $(LOPTS) minigzip,libz.olb/lib

clean :
	delete *.obj;*,libz.olb;*,*.opt;*,*.exe;*


# Other dependencies.
adler32.obj  : adler32.c zutil.h zlib.h zconf.h
compress.obj : compress.c zlib.h zconf.h
crc32.obj    : crc32.c zutil.h zlib.h zconf.h
deflate.obj  : deflate.c deflate.h zutil.h zlib.h zconf.h
example.obj  : [.test]example.c zlib.h zconf.h
gzclose.obj  : gzclose.c zutil.h zlib.h zconf.h
gzlib.obj    : gzlib.c zutil.h zlib.h zconf.h
gzread.obj   : gzread.c zutil.h zlib.h zconf.h
gzwrite.obj  : gzwrite.c zutil.h zlib.h zconf.h
inffast.obj  : inffast.c zutil.h zlib.h zconf.h inftrees.h inffast.h
inflate.obj  : inflate.c zutil.h zlib.h zconf.h
inftrees.obj : inftrees.c zutil.h zlib.h zconf.h inftrees.h
minigzip.obj : [.test]minigzip.c zlib.h zconf.h
trees.obj    : trees.c deflate.h zutil.h zlib.h zconf.h
uncompr.obj  : uncompr.c zlib.h zconf.h
zutil.obj    : zutil.c zutil.h zlib.h zconf.h
infback.obj  : infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h
$ eod
$ close out
$ return
$!------------------------------------------------------------------------------
$!
$! Read list of core library sources from makefile.in and create options
$! needed to build shareable image
$!
$CREA_OLIST:
$ open/read min makefile.in
$ open/write mod modules.opt
$ src_check_list = "OBJZ =#OBJG ="
$MRLOOP:
$ read/end=mrdone min rec
$ i = 0
$SRC_CHECK_LOOP:
$ src_check = f$element(i, "#", src_check_list)
$ i = i+1
$ if src_check .eqs. "#" then goto mrloop
$ if (f$extract(0,6,rec) .nes. src_check) then goto src_check_loop
$ rec = rec - src_check
$ gosub extra_filnam
$ if (f$element(1,"\",rec) .eqs. "\") then goto mrloop
$MRSLOOP:
$ read/end=mrdone min rec
$ gosub extra_filnam
$ if (f$element(1,"\",rec) .nes. "\") then goto mrsloop
$MRDONE:
$ close min
$ close mod
$ return
$!------------------------------------------------------------------------------
$!
$! Take record extracted in crea_olist and split it into single filenames
$!
$EXTRA_FILNAM:
$ myrec = f$edit(rec - "\", "trim,compress")
$ i = 0
$FELOOP:
$ srcfil = f$element(i," ", myrec)
$ if (srcfil .nes. " ")
$ then
$   write mod f$parse(srcfil,,,"NAME"), ".obj"
$   i = i + 1
$   goto feloop
$ endif
$ return
$!------------------------------------------------------------------------------
$!
$! Find current Zlib version number
$!
$FIND_VERSION:
$ open/read h_in 'v_file'
$hloop:
$ read/end=hdone h_in rec
$ rec = f$edit(rec,"TRIM")
$ if (f$extract(0,1,rec) .nes. "#") then goto hloop
$ rec = f$edit(rec - "#", "TRIM")
$ if f$element(0," ",rec) .nes. "define" then goto hloop
$ if f$element(1," ",rec) .eqs. v_string
$ then
$   version = 'f$element(2," ",rec)'
$   goto hdone
$ endif
$ goto hloop
$hdone:
$ close h_in
$ return
$!------------------------------------------------------------------------------
$!
$CHECK_CONFIG:
$!
$ in_ldef = f$locate(cdef,libdefs)
$ if (in_ldef .lt. f$length(libdefs))
$ then
$   write aconf "#define ''cdef' 1"
$   libdefs = f$extract(0,in_ldef,libdefs) + -
              f$extract(in_ldef + f$length(cdef) + 1, -
                        f$length(libdefs) - in_ldef - f$length(cdef) - 1, -
                        libdefs)
$ else
$   if (f$type('cdef') .eqs. "INTEGER")
$   then
$     write aconf "#define ''cdef' ", 'cdef'
$   else
$     if (f$type('cdef') .eqs. "STRING")
$     then
$       write aconf "#define ''cdef' ", """", '''cdef'', """"
$     else
$       gosub check_cc_def
$     endif
$   endif
$ endif
$ return
$!------------------------------------------------------------------------------
$!
$! Check if this is a define relating to the properties of the C/C++
$! compiler
$!
$ CHECK_CC_DEF:
$ if (cdef .eqs. "_LARGEFILE64_SOURCE")
$ then
$   copy sys$input: 'tc'
$   deck
#include "tconfig"
#define _LARGEFILE
#include <stdio.h>

int main(){
FILE *fp;
  fp = fopen("temp.txt","r");
  fseeko(fp,1,SEEK_SET);
  fclose(fp);
}

$   eod
$   test_inv = false
$   comm_h = false
$   gosub cc_prop_check
$   return
$ endif
$ write aconf "/* ", line, " */"
$ return
$!------------------------------------------------------------------------------
$!
$! Check for properties of C/C++ compiler
$!
$! Version history
$! 0.01 20031020 First version to receive a number
$! 0.02 20031022 Added logic for defines with value
$! 0.03 20040309 Make sure local config file gets not deleted
$! 0.04 20041230 Also write include for configure run
$! 0.05 20050103 Add processing of "comment defines"
$CC_PROP_CHECK:
$ cc_prop = true
$ is_need = false
$ is_need = (f$extract(0,4,cdef) .eqs. "NEED") .or. (test_inv .eq. true)
$ if f$search(th) .eqs. "" then create 'th'
$ set message/nofac/noident/nosever/notext
$ on error then continue
$ cc 'tmpnam'
$ if .not. ($status)  then cc_prop = false
$ on error then continue
$! The headers might lie about the capabilities of the RTL
$ link 'tmpnam',tmp.opt/opt
$ if .not. ($status)  then cc_prop = false
$ set message/fac/ident/sever/text
$ on error then goto err_exit
$ delete/nolog 'tmpnam'.*;*/exclude='th'
$ if (cc_prop .and. .not. is_need) .or. -
     (.not. cc_prop .and. is_need)
$ then
$   write sys$output "Checking for ''cdef'... yes"
$   if f$type('cdef_val'_yes) .nes. ""
$   then
$     if f$type('cdef_val'_yes) .eqs. "INTEGER" -
         then call write_config f$fao("#define !AS !UL",cdef,'cdef_val'_yes)
$     if f$type('cdef_val'_yes) .eqs. "STRING" -
         then call write_config f$fao("#define !AS !AS",cdef,'cdef_val'_yes)
$   else
$     call write_config f$fao("#define !AS 1",cdef)
$   endif
$   if (cdef .eqs. "HAVE_FSEEKO") .or. (cdef .eqs. "_LARGE_FILES") .or. -
       (cdef .eqs. "_LARGEFILE64_SOURCE") then -
      call write_config f$string("#define _LARGEFILE 1")
$ else
$   write sys$output "Checking for ''cdef'... no"
$   if (comm_h)
$   then
      call write_config f$fao("/* !AS */",line)
$   else
$     if f$type('cdef_val'_no) .nes. ""
$     then
$       if f$type('cdef_val'_no) .eqs. "INTEGER" -
           then call write_config f$fao("#define !AS !UL",cdef,'cdef_val'_no)
$       if f$type('cdef_val'_no) .eqs. "STRING" -
           then call write_config f$fao("#define !AS !AS",cdef,'cdef_val'_no)
$     else
$       call write_config f$fao("#undef !AS",cdef)
$     endif
$   endif
$ endif
$ return
$!------------------------------------------------------------------------------
$!
$! Check for properties of C/C++ compiler with multiple result values
$!
$! Version history
$! 0.01 20040127 First version
$! 0.02 20050103 Reconcile changes from cc_prop up to version 0.05
$CC_MPROP_CHECK:
$ cc_prop = true
$ i    = 1
$ idel = 1
$ MT_LOOP:
$ if f$type(result_'i') .eqs. "STRING"
$ then
$   set message/nofac/noident/nosever/notext
$   on error then continue
$   cc 'tmpnam'_'i'
$   if .not. ($status)  then cc_prop = false
$   on error then continue
$! The headers might lie about the capabilities of the RTL
$   link 'tmpnam'_'i',tmp.opt/opt
$   if .not. ($status)  then cc_prop = false
$   set message/fac/ident/sever/text
$   on error then goto err_exit
$   delete/nolog 'tmpnam'_'i'.*;*
$   if (cc_prop)
$   then
$     write sys$output "Checking for ''cdef'... ", mdef_'i'
$     if f$type(mdef_'i') .eqs. "INTEGER" -
         then call write_config f$fao("#define !AS !UL",cdef,mdef_'i')
$     if f$type('cdef_val'_yes) .eqs. "STRING" -
         then call write_config f$fao("#define !AS !AS",cdef,mdef_'i')
$     goto msym_clean
$   else
$     i = i + 1
$     goto mt_loop
$   endif
$ endif
$ write sys$output "Checking for ''cdef'... no"
$ call write_config f$fao("#undef !AS",cdef)
$ MSYM_CLEAN:
$ if (idel .le. msym_max)
$ then
$   delete/sym mdef_'idel'
$   idel = idel + 1
$   goto msym_clean
$ endif
$ return
$!------------------------------------------------------------------------------
$!
$! Write configuration to both permanent and temporary config file
$!
$! Version history
$! 0.01 20031029 First version to receive a number
$!
$WRITE_CONFIG: SUBROUTINE
$  write aconf 'p1'
$  open/append confh 'th'
$  write confh 'p1'
$  close confh
$ENDSUBROUTINE
$!------------------------------------------------------------------------------
$!
$! Analyze the project map file and create the symbol vector for a shareable
$! image from it
$!
$! Version history
$! 0.01 20120128 First version
$! 0.02 20120226 Add pre-load logic
$!
$ MAP_2_SHOPT: Subroutine
$!
$ SAY := "WRITE_ SYS$OUTPUT"
$!
$ IF F$SEARCH("''P1'") .EQS. ""
$ THEN
$    SAY "MAP_2_SHOPT-E-NOSUCHFILE:  Error, inputfile ''p1' not available"
$    goto exit_m2s
$ ENDIF
$ IF "''P2'" .EQS. ""
$ THEN
$    SAY "MAP_2_SHOPT:  Error, no output file provided"
$    goto exit_m2s
$ ENDIF
$!
$ module1 = "deflate#deflateEnd#deflateInit_#deflateParams#deflateSetDictionary"
$ module2 = "gzclose#gzerror#gzgetc#gzgets#gzopen#gzprintf#gzputc#gzputs#gzread"
$ module3 = "gzseek#gztell#inflate#inflateEnd#inflateInit_#inflateSetDictionary"
$ module4 = "inflateSync#uncompress#zlibVersion#compress"
$ open/read map 'p1
$ if axp .or. ia64
$ then
$     open/write aopt a.opt
$     open/write bopt b.opt
$     write aopt " CASE_SENSITIVE=YES"
$     write bopt "SYMBOL_VECTOR= (-"
$     mod_sym_num = 1
$ MOD_SYM_LOOP:
$     if f$type(module'mod_sym_num') .nes. ""
$     then
$         mod_in = 0
$ MOD_SYM_IN:
$         shared_proc = f$element(mod_in, "#", module'mod_sym_num')
$         if shared_proc .nes. "#"
$         then
$             write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",-
        		       f$edit(shared_proc,"upcase"),shared_proc)
$             write bopt f$fao("!AS=PROCEDURE,-",shared_proc)
$             mod_in = mod_in + 1
$             goto mod_sym_in
$         endif
$         mod_sym_num = mod_sym_num + 1
$         goto mod_sym_loop
$     endif
$MAP_LOOP:
$     read/end=map_end map line
$     if (f$locate("{",line).lt. f$length(line)) .or. -
         (f$locate("global:", line) .lt. f$length(line))
$     then
$         proc = true
$         goto map_loop
$     endif
$     if f$locate("}",line).lt. f$length(line) then proc = false
$     if f$locate("local:", line) .lt. f$length(line) then proc = false
$     if proc
$     then
$         shared_proc = f$edit(line,"collapse")
$         chop_semi = f$locate(";", shared_proc)
$         if chop_semi .lt. f$length(shared_proc) then -
              shared_proc = f$extract(0, chop_semi, shared_proc)
$         write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",-
        			 f$edit(shared_proc,"upcase"),shared_proc)
$         write bopt f$fao("!AS=PROCEDURE,-",shared_proc)
$     endif
$     goto map_loop
$MAP_END:
$     close/nolog aopt
$     close/nolog bopt
$     open/append libopt 'p2'
$     open/read aopt a.opt
$     open/read bopt b.opt
$ALOOP:
$     read/end=aloop_end aopt line
$     write libopt line
$     goto aloop
$ALOOP_END:
$     close/nolog aopt
$     sv = ""
$BLOOP:
$     read/end=bloop_end bopt svn
$     if (svn.nes."")
$     then
$        if (sv.nes."") then write libopt sv
$        sv = svn
$     endif
$     goto bloop
$BLOOP_END:
$     write libopt f$extract(0,f$length(sv)-2,sv), "-"
$     write libopt ")"
$     close/nolog bopt
$     delete/nolog/noconf a.opt;*,b.opt;*
$ else
$     if vax
$     then
$     open/append libopt 'p2'
$     mod_sym_num = 1
$ VMOD_SYM_LOOP:
$     if f$type(module'mod_sym_num') .nes. ""
$     then
$         mod_in = 0
$ VMOD_SYM_IN:
$         shared_proc = f$element(mod_in, "#", module'mod_sym_num')
$         if shared_proc .nes. "#"
$         then
$     	      write libopt f$fao("UNIVERSAL=!AS",-
      	  			     f$edit(shared_proc,"upcase"))
$             mod_in = mod_in + 1
$             goto vmod_sym_in
$         endif
$         mod_sym_num = mod_sym_num + 1
$         goto vmod_sym_loop
$     endif
$VMAP_LOOP:
$     	  read/end=vmap_end map line
$     	  if (f$locate("{",line).lt. f$length(line)) .or. -
   	      (f$locate("global:", line) .lt. f$length(line))
$     	  then
$     	      proc = true
$     	      goto vmap_loop
$     	  endif
$     	  if f$locate("}",line).lt. f$length(line) then proc = false
$     	  if f$locate("local:", line) .lt. f$length(line) then proc = false
$     	  if proc
$     	  then
$     	      shared_proc = f$edit(line,"collapse")
$     	      chop_semi = f$locate(";", shared_proc)
$     	      if chop_semi .lt. f$length(shared_proc) then -
      	  	  shared_proc = f$extract(0, chop_semi, shared_proc)
$     	      write libopt f$fao("UNIVERSAL=!AS",-
      	  			     f$edit(shared_proc,"upcase"))
$     	  endif
$     	  goto vmap_loop
$VMAP_END:
$     else
$         write sys$output "Unknown Architecture (Not VAX, AXP, or IA64)"
$         write sys$output "No options file created"
$     endif
$ endif
$ EXIT_M2S:
$ close/nolog map
$ close/nolog libopt
$ endsubroutine
Added compat/zlib/msdos/Makefile.bor.



















































































































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# Makefile for zlib
# Borland C++
# Last updated: 15-Mar-2003

# To use, do "make -fmakefile.bor"
# To compile in small model, set below: MODEL=s

# WARNING: the small model is supported but only for small values of
# MAX_WBITS and MAX_MEM_LEVEL. For example:
#    -DMAX_WBITS=11 -DDEF_WBITS=11 -DMAX_MEM_LEVEL=3
# If you wish to reduce the memory requirements (default 256K for big
# objects plus a few K), you can add to the LOC macro below:
#   -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14
# See zconf.h for details about the memory requirements.

# ------------ Turbo C++, Borland C++ ------------

#    Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7)
#    should be added to the environment via "set LOCAL_ZLIB=-DFOO" or added
#    to the declaration of LOC here:
LOC = $(LOCAL_ZLIB)

# type for CPU required: 0: 8086, 1: 80186, 2: 80286, 3: 80386, etc.
CPU_TYP = 0

# memory model: one of s, m, c, l (small, medium, compact, large)
MODEL=l

# replace bcc with tcc for Turbo C++ 1.0, with bcc32 for the 32 bit version
CC=bcc
LD=bcc
AR=tlib

# compiler flags
# replace "-O2" by "-O -G -a -d" for Turbo C++ 1.0
CFLAGS=-O2 -Z -m$(MODEL) $(LOC)

LDFLAGS=-m$(MODEL) -f-


# variables
ZLIB_LIB = zlib_$(MODEL).lib

OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj


# targets
all: $(ZLIB_LIB) example.exe minigzip.exe

.c.obj:
	$(CC) -c $(CFLAGS) $*.c

adler32.obj: adler32.c zlib.h zconf.h

compress.obj: compress.c zlib.h zconf.h

crc32.obj: crc32.c zlib.h zconf.h crc32.h

deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h

gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h

gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h

gzread.obj: gzread.c zlib.h zconf.h gzguts.h

gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h

infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h

inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h

trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h

uncompr.obj: uncompr.c zlib.h zconf.h

zutil.obj: zutil.c zutil.h zlib.h zconf.h

example.obj: test/example.c zlib.h zconf.h

minigzip.obj: test/minigzip.c zlib.h zconf.h


# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
	-del $(ZLIB_LIB)
	$(AR) $(ZLIB_LIB) $(OBJP1)
	$(AR) $(ZLIB_LIB) $(OBJP2)

example.exe: example.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)

minigzip.exe: minigzip.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)

test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

clean:
	-del *.obj
	-del *.lib
	-del *.exe
	-del zlib_*.bak
	-del foo.gz
Added compat/zlib/msdos/Makefile.dj2.








































































































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# Makefile for zlib.  Modified for djgpp v2.0 by F. J. Donahoe, 3/15/96.
# Copyright (C) 1995-1998 Jean-loup Gailly.
# For conditions of distribution and use, see copyright notice in zlib.h

# To compile, or to compile and test, type:
#
#   make -fmakefile.dj2;  make test -fmakefile.dj2
#
# To install libz.a, zconf.h and zlib.h in the djgpp directories, type:
#
#    make install -fmakefile.dj2
#
# after first defining LIBRARY_PATH and INCLUDE_PATH in djgpp.env as
# in the sample below if the pattern of the DJGPP distribution is to
# be followed.  Remember that, while <sp>'es around <=> are ignored in
# makefiles, they are *not* in batch files or in djgpp.env.
# - - - - -
# [make]
# INCLUDE_PATH=%\>;INCLUDE_PATH%%\DJDIR%\include
# LIBRARY_PATH=%\>;LIBRARY_PATH%%\DJDIR%\lib
# BUTT=-m486
# - - - - -
# Alternately, these variables may be defined below, overriding the values
# in djgpp.env, as
# INCLUDE_PATH=c:\usr\include
# LIBRARY_PATH=c:\usr\lib

CC=gcc

#CFLAGS=-MMD -O
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-MMD -g -DZLIB_DEBUG
CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
             -Wstrict-prototypes -Wmissing-prototypes

# If cp.exe is available, replace "copy /Y" with "cp -fp" .
CP=copy /Y
# If gnu install.exe is available, replace $(CP) with ginstall.
INSTALL=$(CP)
# The default value of RM is "rm -f."  If "rm.exe" is found, comment out:
RM=del
LDLIBS=-L. -lz
LD=$(CC) -s -o
LDSHARED=$(CC)

INCL=zlib.h zconf.h
LIBS=libz.a

AR=ar rcs

prefix=/usr/local
exec_prefix = $(prefix)

OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
       uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o

OBJA =
# to use the asm code: make OBJA=match.o

TEST_OBJS = example.o minigzip.o

all: example.exe minigzip.exe

check: test
test: all
	./example
	echo hello world | .\minigzip | .\minigzip -d

%.o : %.c
	$(CC) $(CFLAGS) -c $< -o $@

libz.a: $(OBJS) $(OBJA)
	$(AR) $@ $(OBJS) $(OBJA)

%.exe : %.o $(LIBS)
	$(LD) $@ $< $(LDLIBS)

# INCLUDE_PATH and LIBRARY_PATH were set for [make] in djgpp.env .

.PHONY : uninstall clean

install: $(INCL) $(LIBS)
	-@if not exist $(INCLUDE_PATH)\nul mkdir $(INCLUDE_PATH)
	-@if not exist $(LIBRARY_PATH)\nul mkdir $(LIBRARY_PATH)
	$(INSTALL) zlib.h $(INCLUDE_PATH)
	$(INSTALL) zconf.h $(INCLUDE_PATH)
	$(INSTALL) libz.a $(LIBRARY_PATH)

uninstall:
	$(RM) $(INCLUDE_PATH)\zlib.h
	$(RM) $(INCLUDE_PATH)\zconf.h
	$(RM) $(LIBRARY_PATH)\libz.a

clean:
	$(RM) *.d
	$(RM) *.o
	$(RM) *.exe
	$(RM) libz.a
	$(RM) foo.gz

DEPS := $(wildcard *.d)
ifneq ($(DEPS),)
include $(DEPS)
endif
Added compat/zlib/msdos/Makefile.emx.





































































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# Makefile for zlib.  Modified for emx 0.9c by Chr. Spieler, 6/17/98.
# Copyright (C) 1995-1998 Jean-loup Gailly.
# For conditions of distribution and use, see copyright notice in zlib.h

# To compile, or to compile and test, type:
#
#   make -fmakefile.emx;  make test -fmakefile.emx
#

CC=gcc

#CFLAGS=-MMD -O
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-MMD -g -DZLIB_DEBUG
CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
             -Wstrict-prototypes -Wmissing-prototypes

# If cp.exe is available, replace "copy /Y" with "cp -fp" .
CP=copy /Y
# If gnu install.exe is available, replace $(CP) with ginstall.
INSTALL=$(CP)
# The default value of RM is "rm -f."  If "rm.exe" is found, comment out:
RM=del
LDLIBS=-L. -lzlib
LD=$(CC) -s -o
LDSHARED=$(CC)

INCL=zlib.h zconf.h
LIBS=zlib.a

AR=ar rcs

prefix=/usr/local
exec_prefix = $(prefix)

OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
       uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o

TEST_OBJS = example.o minigzip.o

all: example.exe minigzip.exe

test: all
	./example
	echo hello world | .\minigzip | .\minigzip -d

%.o : %.c
	$(CC) $(CFLAGS) -c $< -o $@

zlib.a: $(OBJS)
	$(AR) $@ $(OBJS)

%.exe : %.o $(LIBS)
	$(LD) $@ $< $(LDLIBS)


.PHONY : clean

clean:
	$(RM) *.d
	$(RM) *.o
	$(RM) *.exe
	$(RM) zlib.a
	$(RM) foo.gz

DEPS := $(wildcard *.d)
ifneq ($(DEPS),)
include $(DEPS)
endif
Added compat/zlib/msdos/Makefile.msc.
















































































































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# Makefile for zlib
# Microsoft C 5.1 or later
# Last updated: 19-Mar-2003

# To use, do "make makefile.msc"
# To compile in small model, set below: MODEL=S

# If you wish to reduce the memory requirements (default 256K for big
# objects plus a few K), you can add to the LOC macro below:
#   -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14
# See zconf.h for details about the memory requirements.

# ------------- Microsoft C 5.1 and later -------------

#    Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7)
#    should be added to the environment via "set LOCAL_ZLIB=-DFOO" or added
#    to the declaration of LOC here:
LOC = $(LOCAL_ZLIB)

# Type for CPU required: 0: 8086, 1: 80186, 2: 80286, 3: 80386, etc.
CPU_TYP = 0

# Memory model: one of S, M, C, L (small, medium, compact, large)
MODEL=L

CC=cl
CFLAGS=-nologo -A$(MODEL) -G$(CPU_TYP) -W3 -Oait -Gs $(LOC)
#-Ox generates bad code with MSC 5.1
LIB_CFLAGS=-Zl $(CFLAGS)

LD=link
LDFLAGS=/noi/e/st:0x1500/noe/farcall/packcode
# "/farcall/packcode" are only useful for `large code' memory models
# but should be a "no-op" for small code models.


# variables
ZLIB_LIB = zlib_$(MODEL).lib

OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj


# targets
all:  $(ZLIB_LIB) example.exe minigzip.exe

.c.obj:
	$(CC) -c $(LIB_CFLAGS) $*.c

adler32.obj: adler32.c zlib.h zconf.h

compress.obj: compress.c zlib.h zconf.h

crc32.obj: crc32.c zlib.h zconf.h crc32.h

deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h

gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h

gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h

gzread.obj: gzread.c zlib.h zconf.h gzguts.h

gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h

infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h

inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h

trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h

uncompr.obj: uncompr.c zlib.h zconf.h

zutil.obj: zutil.c zutil.h zlib.h zconf.h

example.obj: test/example.c zlib.h zconf.h
	$(CC) -c $(CFLAGS) $*.c

minigzip.obj: test/minigzip.c zlib.h zconf.h
	$(CC) -c $(CFLAGS) $*.c


# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
	if exist $(ZLIB_LIB) del $(ZLIB_LIB)
	lib $(ZLIB_LIB) $(OBJ1);
	lib $(ZLIB_LIB) $(OBJ2);

example.exe: example.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) example.obj,,,$(ZLIB_LIB);

minigzip.exe: minigzip.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) minigzip.obj,,,$(ZLIB_LIB);

test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

clean:
	-del *.obj
	-del *.lib
	-del *.exe
	-del *.map
	-del zlib_*.bak
	-del foo.gz
Added compat/zlib/msdos/Makefile.tc.




































































































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# Makefile for zlib
# Turbo C 2.01, Turbo C++ 1.01
# Last updated: 15-Mar-2003

# To use, do "make -fmakefile.tc"
# To compile in small model, set below: MODEL=s

# WARNING: the small model is supported but only for small values of
# MAX_WBITS and MAX_MEM_LEVEL. For example:
#    -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
# If you wish to reduce the memory requirements (default 256K for big
# objects plus a few K), you can add to CFLAGS below:
#   -DMAX_MEM_LEVEL=7 -DMAX_WBITS=14
# See zconf.h for details about the memory requirements.

# ------------ Turbo C 2.01, Turbo C++ 1.01 ------------
MODEL=l
CC=tcc
LD=tcc
AR=tlib
# CFLAGS=-O2 -G -Z -m$(MODEL) -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
CFLAGS=-O2 -G -Z -m$(MODEL)
LDFLAGS=-m$(MODEL) -f-


# variables
ZLIB_LIB = zlib_$(MODEL).lib

OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj


# targets
all: $(ZLIB_LIB) example.exe minigzip.exe

.c.obj:
	$(CC) -c $(CFLAGS) $*.c

adler32.obj: adler32.c zlib.h zconf.h

compress.obj: compress.c zlib.h zconf.h

crc32.obj: crc32.c zlib.h zconf.h crc32.h

deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h

gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h

gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h

gzread.obj: gzread.c zlib.h zconf.h gzguts.h

gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h

infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h

inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h

trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h

uncompr.obj: uncompr.c zlib.h zconf.h

zutil.obj: zutil.c zutil.h zlib.h zconf.h

example.obj: test/example.c zlib.h zconf.h

minigzip.obj: test/minigzip.c zlib.h zconf.h


# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
	-del $(ZLIB_LIB)
	$(AR) $(ZLIB_LIB) $(OBJP1)
	$(AR) $(ZLIB_LIB) $(OBJP2)

example.exe: example.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)

minigzip.exe: minigzip.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)

test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

clean:
	-del *.obj
	-del *.lib
	-del *.exe
	-del zlib_*.bak
	-del foo.gz
Added compat/zlib/nintendods/Makefile.






























































































































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#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif

include $(DEVKITARM)/ds_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
#---------------------------------------------------------------------------------
TARGET		:=	$(shell basename $(CURDIR))
BUILD		:=	build
SOURCES		:=	../../
DATA		:=	data
INCLUDES	:=	include

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH	:=	-mthumb -mthumb-interwork

CFLAGS	:=	-Wall -O2\
		-march=armv5te -mtune=arm946e-s \
		-fomit-frame-pointer -ffast-math \
		$(ARCH)

CFLAGS	+=	$(INCLUDE) -DARM9
CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions

ASFLAGS	:=	$(ARCH) -march=armv5te -mtune=arm946e-s
LDFLAGS	=	-specs=ds_arm9.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS	:=	$(LIBNDS)

#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT	:=	$(CURDIR)/lib/libz.a

export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
			$(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR	:=	$(CURDIR)/$(BUILD)

CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
	export LD	:=	$(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
	export LD	:=	$(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES	:=	$(addsuffix .o,$(BINFILES)) \
			$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)

export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
			$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
			-I$(CURDIR)/$(BUILD)

.PHONY: $(BUILD) clean all

#---------------------------------------------------------------------------------
all: $(BUILD)
	@[ -d $@ ] || mkdir -p include
	@cp ../../*.h include

lib:
	@[ -d $@ ] || mkdir -p $@
	
$(BUILD): lib
	@[ -d $@ ] || mkdir -p $@
	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
	@echo clean ...
	@rm -fr $(BUILD) lib

#---------------------------------------------------------------------------------
else

DEPENDS	:=	$(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT)	:	$(OFILES)

#---------------------------------------------------------------------------------
%.bin.o	:	%.bin
#---------------------------------------------------------------------------------
	@echo $(notdir $<)
	@$(bin2o)


-include $(DEPENDS)

#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------
Added compat/zlib/nintendods/README.





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This Makefile requires devkitARM (http://www.devkitpro.org/category/devkitarm/) and works inside "contrib/nds". It is based on a devkitARM template.

Eduardo Costa <eduardo.m.costa@gmail.com>
January 3, 2009

Added compat/zlib/old/Makefile.emx.





































































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# Makefile for zlib.  Modified for emx/rsxnt by Chr. Spieler, 6/16/98.
# Copyright (C) 1995-1998 Jean-loup Gailly.
# For conditions of distribution and use, see copyright notice in zlib.h

# To compile, or to compile and test, type:
#
#   make -fmakefile.emx;  make test -fmakefile.emx
#

CC=gcc -Zwin32

#CFLAGS=-MMD -O
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-MMD -g -DZLIB_DEBUG
CFLAGS=-MMD -O3 $(BUTT) -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
             -Wstrict-prototypes -Wmissing-prototypes

# If cp.exe is available, replace "copy /Y" with "cp -fp" .
CP=copy /Y
# If gnu install.exe is available, replace $(CP) with ginstall.
INSTALL=$(CP)
# The default value of RM is "rm -f."  If "rm.exe" is found, comment out:
RM=del
LDLIBS=-L. -lzlib
LD=$(CC) -s -o
LDSHARED=$(CC)

INCL=zlib.h zconf.h
LIBS=zlib.a

AR=ar rcs

prefix=/usr/local
exec_prefix = $(prefix)

OBJS = adler32.o compress.o crc32.o deflate.o gzclose.o gzlib.o gzread.o \
       gzwrite.o infback.o inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o

TEST_OBJS = example.o minigzip.o

all: example.exe minigzip.exe

test: all
	./example
	echo hello world | .\minigzip | .\minigzip -d

%.o : %.c
	$(CC) $(CFLAGS) -c $< -o $@

zlib.a: $(OBJS)
	$(AR) $@ $(OBJS)

%.exe : %.o $(LIBS)
	$(LD) $@ $< $(LDLIBS)


.PHONY : clean

clean:
	$(RM) *.d
	$(RM) *.o
	$(RM) *.exe
	$(RM) zlib.a
	$(RM) foo.gz

DEPS := $(wildcard *.d)
ifneq ($(DEPS),)
include $(DEPS)
endif
Added compat/zlib/old/Makefile.riscos.























































































































































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# Project:   zlib_1_03
# Patched for zlib 1.1.2 rw@shadow.org.uk 19980430
# test works out-of-the-box, installs `somewhere' on demand

# Toolflags:
CCflags = -c -depend !Depend -IC: -g -throwback  -DRISCOS  -fah
C++flags = -c -depend !Depend -IC: -throwback
Linkflags = -aif -c++ -o $@
ObjAsmflags = -throwback -NoCache -depend !Depend
CMHGflags =
LibFileflags = -c -l -o $@
Squeezeflags = -o $@

# change the line below to where _you_ want the library installed.
libdest = lib:zlib

# Final targets:
@.lib:   @.o.adler32 @.o.compress @.o.crc32 @.o.deflate @.o.gzio \
        @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil @.o.trees \
        @.o.uncompr @.o.zutil
        LibFile $(LibFileflags) @.o.adler32 @.o.compress @.o.crc32 @.o.deflate \
        @.o.gzio @.o.infblock @.o.infcodes @.o.inffast @.o.inflate @.o.inftrees @.o.infutil \
        @.o.trees @.o.uncompr @.o.zutil
test:   @.minigzip @.example @.lib
	@copy @.lib @.libc  A~C~DF~L~N~P~Q~RS~TV
	@echo running tests: hang on.
	@/@.minigzip -f -9 libc
	@/@.minigzip -d libc-gz
	@/@.minigzip -f -1 libc
	@/@.minigzip -d libc-gz
	@/@.minigzip -h -9 libc
	@/@.minigzip -d libc-gz
	@/@.minigzip -h -1 libc
	@/@.minigzip -d libc-gz
	@/@.minigzip -9 libc
	@/@.minigzip -d libc-gz
	@/@.minigzip -1 libc
	@/@.minigzip -d libc-gz
	@diff @.lib @.libc
	@echo that should have reported '@.lib and @.libc identical' if you have diff.
	@/@.example @.fred @.fred
	@echo that will have given lots of hello!'s.

@.minigzip:   @.o.minigzip @.lib C:o.Stubs
        Link $(Linkflags) @.o.minigzip @.lib C:o.Stubs
@.example:   @.o.example @.lib C:o.Stubs
        Link $(Linkflags) @.o.example @.lib C:o.Stubs

install: @.lib
	cdir $(libdest)
	cdir $(libdest).h
	@copy @.h.zlib $(libdest).h.zlib A~C~DF~L~N~P~Q~RS~TV
	@copy @.h.zconf $(libdest).h.zconf A~C~DF~L~N~P~Q~RS~TV
	@copy @.lib $(libdest).lib  A~C~DF~L~N~P~Q~RS~TV
	@echo okay, installed zlib in $(libdest)

clean:; remove @.minigzip
	remove @.example
	remove @.libc
	-wipe @.o.* F~r~cV
	remove @.fred

# User-editable dependencies:
.c.o:
        cc $(ccflags) -o $@ $<

# Static dependencies:

# Dynamic dependencies:
o.example:	c.example
o.example:	h.zlib
o.example:	h.zconf
o.minigzip:	c.minigzip
o.minigzip:	h.zlib
o.minigzip:	h.zconf
o.adler32:	c.adler32
o.adler32:	h.zlib
o.adler32:	h.zconf
o.compress:	c.compress
o.compress:	h.zlib
o.compress:	h.zconf
o.crc32:	c.crc32
o.crc32:	h.zlib
o.crc32:	h.zconf
o.deflate:	c.deflate
o.deflate:	h.deflate
o.deflate:	h.zutil
o.deflate:	h.zlib
o.deflate:	h.zconf
o.gzio:	c.gzio
o.gzio:	h.zutil
o.gzio:	h.zlib
o.gzio:	h.zconf
o.infblock:	c.infblock
o.infblock:	h.zutil
o.infblock:	h.zlib
o.infblock:	h.zconf
o.infblock:	h.infblock
o.infblock:	h.inftrees
o.infblock:	h.infcodes
o.infblock:	h.infutil
o.infcodes:	c.infcodes
o.infcodes:	h.zutil
o.infcodes:	h.zlib
o.infcodes:	h.zconf
o.infcodes:	h.inftrees
o.infcodes:	h.infblock
o.infcodes:	h.infcodes
o.infcodes:	h.infutil
o.infcodes:	h.inffast
o.inffast:	c.inffast
o.inffast:	h.zutil
o.inffast:	h.zlib
o.inffast:	h.zconf
o.inffast:	h.inftrees
o.inffast:	h.infblock
o.inffast:	h.infcodes
o.inffast:	h.infutil
o.inffast:	h.inffast
o.inflate:	c.inflate
o.inflate:	h.zutil
o.inflate:	h.zlib
o.inflate:	h.zconf
o.inflate:	h.infblock
o.inftrees:	c.inftrees
o.inftrees:	h.zutil
o.inftrees:	h.zlib
o.inftrees:	h.zconf
o.inftrees:	h.inftrees
o.inftrees:	h.inffixed
o.infutil:	c.infutil
o.infutil:	h.zutil
o.infutil:	h.zlib
o.infutil:	h.zconf
o.infutil:	h.infblock
o.infutil:	h.inftrees
o.infutil:	h.infcodes
o.infutil:	h.infutil
o.trees:	c.trees
o.trees:	h.deflate
o.trees:	h.zutil
o.trees:	h.zlib
o.trees:	h.zconf
o.trees:	h.trees
o.uncompr:	c.uncompr
o.uncompr:	h.zlib
o.uncompr:	h.zconf
o.zutil:	c.zutil
o.zutil:	h.zutil
o.zutil:	h.zlib
o.zutil:	h.zconf
Added compat/zlib/old/README.



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This directory contains files that have not been updated for zlib 1.2.x

(Volunteers are encouraged to help clean this up.  Thanks.)
Added compat/zlib/old/descrip.mms.
















































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# descrip.mms: MMS description file for building zlib on VMS
# written by Martin P.J. Zinser <m.zinser@gsi.de>

cc_defs =
c_deb =

.ifdef __DECC__
pref = /prefix=all
.endif

OBJS = adler32.obj, compress.obj, crc32.obj, gzio.obj, uncompr.obj,\
       deflate.obj, trees.obj, zutil.obj, inflate.obj, infblock.obj,\
       inftrees.obj, infcodes.obj, infutil.obj, inffast.obj

CFLAGS= $(C_DEB) $(CC_DEFS) $(PREF)

all : example.exe minigzip.exe
        @ write sys$output " Example applications available"
libz.olb : libz.olb($(OBJS))
	@ write sys$output " libz available"

example.exe : example.obj libz.olb
              link example,libz.olb/lib

minigzip.exe : minigzip.obj libz.olb
              link minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib

clean :
	delete *.obj;*,libz.olb;*


# Other dependencies.
adler32.obj : zutil.h zlib.h zconf.h
compress.obj : zlib.h zconf.h
crc32.obj : zutil.h zlib.h zconf.h
deflate.obj : deflate.h zutil.h zlib.h zconf.h
example.obj : zlib.h zconf.h
gzio.obj : zutil.h zlib.h zconf.h
infblock.obj : zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h
infcodes.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h infcodes.h inffast.h
inffast.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h inffast.h
inflate.obj : zutil.h zlib.h zconf.h infblock.h
inftrees.obj : zutil.h zlib.h zconf.h inftrees.h
infutil.obj : zutil.h zlib.h zconf.h inftrees.h infutil.h
minigzip.obj : zlib.h zconf.h
trees.obj : deflate.h zutil.h zlib.h zconf.h
uncompr.obj : zlib.h zconf.h
zutil.obj : zutil.h zlib.h zconf.h
Added compat/zlib/old/os2/Makefile.os2.








































































































































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# Makefile for zlib under OS/2 using GCC (PGCC)
# For conditions of distribution and use, see copyright notice in zlib.h

# To compile and test, type:
#   cp Makefile.os2 ..
#   cd ..
#   make -f Makefile.os2 test

# This makefile will build a static library z.lib, a shared library
# z.dll and a import library zdll.lib. You can use either z.lib or
# zdll.lib by specifying either -lz or -lzdll on gcc's command line

CC=gcc -Zomf -s

CFLAGS=-O6 -Wall
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-g -DZLIB_DEBUG
#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
#           -Wstrict-prototypes -Wmissing-prototypes

#################### BUG WARNING: #####################
## infcodes.c hits a bug in pgcc-1.0, so you have to use either
## -O# where # <= 4 or one of (-fno-ommit-frame-pointer or -fno-force-mem)
## This bug is reportedly fixed in pgcc >1.0, but this was not tested
CFLAGS+=-fno-force-mem

LDFLAGS=-s -L. -lzdll -Zcrtdll
LDSHARED=$(CC) -s -Zomf -Zdll -Zcrtdll

VER=1.1.0
ZLIB=z.lib
SHAREDLIB=z.dll
SHAREDLIBIMP=zdll.lib
LIBS=$(ZLIB) $(SHAREDLIB) $(SHAREDLIBIMP)

AR=emxomfar cr
IMPLIB=emximp
RANLIB=echo
TAR=tar
SHELL=bash

prefix=/usr/local
exec_prefix = $(prefix)

OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
       zutil.o inflate.o infblock.o inftrees.o infcodes.o infutil.o inffast.o

TEST_OBJS = example.o minigzip.o

DISTFILES = README INDEX ChangeLog configure Make*[a-z0-9] *.[ch] descrip.mms \
  algorithm.txt zlib.3 msdos/Make*[a-z0-9] msdos/zlib.def msdos/zlib.rc \
  nt/Makefile.nt nt/zlib.dnt  contrib/README.contrib contrib/*.txt \
  contrib/asm386/*.asm contrib/asm386/*.c \
  contrib/asm386/*.bat contrib/asm386/zlibvc.d?? contrib/iostream/*.cpp \
  contrib/iostream/*.h  contrib/iostream2/*.h contrib/iostream2/*.cpp \
  contrib/untgz/Makefile contrib/untgz/*.c contrib/untgz/*.w32

all: example.exe minigzip.exe

test: all
	@LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
	echo hello world | ./minigzip | ./minigzip -d || \
	  echo '		*** minigzip test FAILED ***' ; \
	if ./example; then \
	  echo '		*** zlib test OK ***'; \
	else \
	  echo '		*** zlib test FAILED ***'; \
	fi

$(ZLIB): $(OBJS)
	$(AR) $@ $(OBJS)
	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1

$(SHAREDLIB): $(OBJS) os2/z.def
	$(LDSHARED) -o $@ $^

$(SHAREDLIBIMP): os2/z.def
	$(IMPLIB) -o $@ $^

example.exe: example.o $(LIBS)
	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)

minigzip.exe: minigzip.o $(LIBS)
	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)

clean:
	rm -f *.o *~ example minigzip libz.a libz.so* foo.gz

distclean:	clean

zip:
	mv Makefile Makefile~; cp -p Makefile.in Makefile
	rm -f test.c ztest*.c
	v=`sed -n -e 's/\.//g' -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
	zip -ul9 zlib$$v $(DISTFILES)
	mv Makefile~ Makefile

dist:
	mv Makefile Makefile~; cp -p Makefile.in Makefile
	rm -f test.c ztest*.c
	d=zlib-`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
	rm -f $$d.tar.gz; \
	if test ! -d ../$$d; then rm -f ../$$d; ln -s `pwd` ../$$d; fi; \
	files=""; \
	for f in $(DISTFILES); do files="$$files $$d/$$f"; done; \
	cd ..; \
	GZIP=-9 $(TAR) chofz $$d/$$d.tar.gz $$files; \
	if test ! -d $$d; then rm -f $$d; fi
	mv Makefile~ Makefile

tags:
	etags *.[ch]

depend:
	makedepend -- $(CFLAGS) -- *.[ch]

# DO NOT DELETE THIS LINE -- make depend depends on it.

adler32.o: zlib.h zconf.h
compress.o: zlib.h zconf.h
crc32.o: zlib.h zconf.h
deflate.o: deflate.h zutil.h zlib.h zconf.h
example.o: zlib.h zconf.h
gzio.o: zutil.h zlib.h zconf.h
infblock.o: infblock.h inftrees.h infcodes.h infutil.h zutil.h zlib.h zconf.h
infcodes.o: zutil.h zlib.h zconf.h
infcodes.o: inftrees.h infblock.h infcodes.h infutil.h inffast.h
inffast.o: zutil.h zlib.h zconf.h inftrees.h
inffast.o: infblock.h infcodes.h infutil.h inffast.h
inflate.o: zutil.h zlib.h zconf.h infblock.h
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
infutil.o: zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h
minigzip.o: zlib.h zconf.h
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
uncompr.o: zlib.h zconf.h
zutil.o: zutil.h zlib.h zconf.h
Added compat/zlib/old/os2/zlib.def.



















































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;
; Slightly modified version of ../nt/zlib.dnt :-)
;

LIBRARY		Z
DESCRIPTION	"Zlib compression library for OS/2"
CODE		PRELOAD MOVEABLE DISCARDABLE
DATA		PRELOAD MOVEABLE MULTIPLE

EXPORTS
    adler32
    compress
    crc32
    deflate
    deflateCopy
    deflateEnd
    deflateInit2_
    deflateInit_
    deflateParams
    deflateReset
    deflateSetDictionary
    gzclose
    gzdopen
    gzerror
    gzflush
    gzopen
    gzread
    gzwrite
    inflate
    inflateEnd
    inflateInit2_
    inflateInit_
    inflateReset
    inflateSetDictionary
    inflateSync
    uncompress
    zlibVersion
    gzprintf
    gzputc
    gzgetc
    gzseek
    gzrewind
    gztell
    gzeof
    gzsetparams
    zError
    inflateSyncPoint
    get_crc_table
    compress2
    gzputs
    gzgets
Added compat/zlib/old/visual-basic.txt.
































































































































































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See below some functions declarations for Visual Basic.

Frequently Asked Question:

Q: Each time I use the compress function I get the -5 error (not enough
   room in the output buffer).

A: Make sure that the length of the compressed buffer is passed by
   reference ("as any"), not by value ("as long"). Also check that
   before the call of compress this length is equal to the total size of
   the compressed buffer and not zero.


From: "Jon Caruana" <jon-net@usa.net>
Subject: Re: How to port zlib declares to vb?
Date: Mon, 28 Oct 1996 18:33:03 -0600

Got the answer! (I haven't had time to check this but it's what I got, and
looks correct):

He has the following routines working:
        compress
        uncompress
        gzopen
        gzwrite
        gzread
        gzclose

Declares follow: (Quoted from Carlos Rios <c_rios@sonda.cl>, in Vb4 form)

#If Win16 Then   'Use Win16 calls.
Declare Function compress Lib "ZLIB.DLL" (ByVal compr As
        String, comprLen As Any, ByVal buf As String, ByVal buflen
        As Long) As Integer
Declare Function uncompress Lib "ZLIB.DLL" (ByVal uncompr
        As String, uncomprLen As Any, ByVal compr As String, ByVal
        lcompr As Long) As Integer
Declare Function gzopen Lib "ZLIB.DLL" (ByVal filePath As
        String, ByVal mode As String) As Long
Declare Function gzread Lib "ZLIB.DLL" (ByVal file As
        Long, ByVal uncompr As String, ByVal uncomprLen As Integer)
        As Integer
Declare Function gzwrite Lib "ZLIB.DLL" (ByVal file As
        Long, ByVal uncompr As String, ByVal uncomprLen As Integer)
        As Integer
Declare Function gzclose Lib "ZLIB.DLL" (ByVal file As
        Long) As Integer
#Else
Declare Function compress Lib "ZLIB32.DLL"
        (ByVal compr As String, comprLen As Any, ByVal buf As
        String, ByVal buflen As Long) As Integer
Declare Function uncompress Lib "ZLIB32.DLL"
        (ByVal uncompr As String, uncomprLen As Any, ByVal compr As
        String, ByVal lcompr As Long) As Long
Declare Function gzopen Lib "ZLIB32.DLL"
        (ByVal file As String, ByVal mode As String) As Long
Declare Function gzread Lib "ZLIB32.DLL"
        (ByVal file As Long, ByVal uncompr As String, ByVal
        uncomprLen As Long) As Long
Declare Function gzwrite Lib "ZLIB32.DLL"
        (ByVal file As Long, ByVal uncompr As String, ByVal
        uncomprLen As Long) As Long
Declare Function gzclose Lib "ZLIB32.DLL"
        (ByVal file As Long) As Long
#End If

-Jon Caruana
jon-net@usa.net
Microsoft Sitebuilder Network Level 1 Member - HTML Writer's Guild Member


Here is another example from Michael <michael_borgsys@hotmail.com> that he
says conforms to the VB guidelines, and that solves the problem of not
knowing the uncompressed size by storing it at the end of the file:

'Calling the functions:
'bracket meaning: <parameter> [optional] {Range of possible values}
'Call subCompressFile(<path with filename to compress> [, <path with
filename to write to>, [level of compression {1..9}]])
'Call subUncompressFile(<path with filename to compress>)

Option Explicit
Private lngpvtPcnSml As Long 'Stores value for 'lngPercentSmaller'
Private Const SUCCESS As Long = 0
Private Const strFilExt As String = ".cpr"
Private Declare Function lngfncCpr Lib "zlib.dll" Alias "compress2" (ByRef
dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long,
ByVal level As Integer) As Long
Private Declare Function lngfncUcp Lib "zlib.dll" Alias "uncompress" (ByRef
dest As Any, ByRef destLen As Any, ByRef src As Any, ByVal srcLen As Long)
As Long

Public Sub subCompressFile(ByVal strargOriFilPth As String, Optional ByVal
strargCprFilPth As String, Optional ByVal intLvl As Integer = 9)
    Dim strCprPth As String
    Dim lngOriSiz As Long
    Dim lngCprSiz As Long
    Dim bytaryOri() As Byte
    Dim bytaryCpr() As Byte
    lngOriSiz = FileLen(strargOriFilPth)
    ReDim bytaryOri(lngOriSiz - 1)
    Open strargOriFilPth For Binary Access Read As #1
        Get #1, , bytaryOri()
    Close #1
    strCprPth = IIf(strargCprFilPth = "", strargOriFilPth, strargCprFilPth)
'Select file path and name
    strCprPth = strCprPth & IIf(Right(strCprPth, Len(strFilExt)) =
strFilExt, "", strFilExt) 'Add file extension if not exists
    lngCprSiz = (lngOriSiz * 1.01) + 12 'Compression needs temporary a bit
more space then original file size
    ReDim bytaryCpr(lngCprSiz - 1)
    If lngfncCpr(bytaryCpr(0), lngCprSiz, bytaryOri(0), lngOriSiz, intLvl) =
SUCCESS Then
        lngpvtPcnSml = (1# - (lngCprSiz / lngOriSiz)) * 100
        ReDim Preserve bytaryCpr(lngCprSiz - 1)
        Open strCprPth For Binary Access Write As #1
            Put #1, , bytaryCpr()
            Put #1, , lngOriSiz 'Add the original size value to the end
(last 4 bytes)
        Close #1
    Else
        MsgBox "Compression error"
    End If
    Erase bytaryCpr
    Erase bytaryOri
End Sub

Public Sub subUncompressFile(ByVal strargFilPth As String)
    Dim bytaryCpr() As Byte
    Dim bytaryOri() As Byte
    Dim lngOriSiz As Long
    Dim lngCprSiz As Long
    Dim strOriPth As String
    lngCprSiz = FileLen(strargFilPth)
    ReDim bytaryCpr(lngCprSiz - 1)
    Open strargFilPth For Binary Access Read As #1
        Get #1, , bytaryCpr()
    Close #1
    'Read the original file size value:
    lngOriSiz = bytaryCpr(lngCprSiz - 1) * (2 ^ 24) _
              + bytaryCpr(lngCprSiz - 2) * (2 ^ 16) _
              + bytaryCpr(lngCprSiz - 3) * (2 ^ 8) _
              + bytaryCpr(lngCprSiz - 4)
    ReDim Preserve bytaryCpr(lngCprSiz - 5) 'Cut of the original size value
    ReDim bytaryOri(lngOriSiz - 1)
    If lngfncUcp(bytaryOri(0), lngOriSiz, bytaryCpr(0), lngCprSiz) = SUCCESS
Then
        strOriPth = Left(strargFilPth, Len(strargFilPth) - Len(strFilExt))
        Open strOriPth For Binary Access Write As #1
            Put #1, , bytaryOri()
        Close #1
    Else
        MsgBox "Uncompression error"
    End If
    Erase bytaryCpr
    Erase bytaryOri
End Sub
Public Property Get lngPercentSmaller() As Long
    lngPercentSmaller = lngpvtPcnSml
End Property
Added compat/zlib/os400/README400.
















































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        ZLIB version 1.3.1 for OS/400 installation instructions

1) Download and unpack the zlib tarball to some IFS directory.
   (i.e.: /path/to/the/zlib/ifs/source/directory)

   If the installed IFS command supports gzip format, this is straightforward,
else you have to unpack first to some directory on a system supporting it,
then move the whole directory to the IFS via the network (via SMB or FTP).

2) Edit the configuration parameters in the compilation script.

        EDTF STMF('/path/to/the/zlib/ifs/source/directory/os400/make.sh')

Tune the parameters according to your needs if not matching the defaults.
Save the file and exit after edition.

3) Enter qshell, then work in the zlib OS/400 specific directory.

        QSH
        cd /path/to/the/zlib/ifs/source/directory/os400

4) Compile and install

        sh make.sh

The script will:
- create the libraries, objects and IFS directories for the zlib environment,
- compile all modules,
- create a service program,
- create a static and a dynamic binding directory,
- install header files for C/C++ and for ILE/RPG, both for compilation in
  DB2 and IFS environments.

That's all. 


Notes:  For OS/400 ILE RPG programmers, a /copy member defining the ZLIB
                API prototypes for ILE RPG can be found in ZLIB/H(ZLIB.INC).
                In the ILE environment, the same definitions are available from
                file zlib.inc located in the same IFS include directory as the
                C/C++ header files.
                Please read comments in this member for more information.

        Remember that most foreign textual data are ASCII coded: this
                implementation does not handle conversion from/to ASCII, so
                text data code conversions must be done explicitly.

        Mainly for the reason above, always open zipped files in binary mode.
Added compat/zlib/os400/bndsrc.































































































































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STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.1.3 entry points.                                    */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("adler32")
  EXPORT SYMBOL("compress")
  EXPORT SYMBOL("compress2")
  EXPORT SYMBOL("crc32")
  EXPORT SYMBOL("get_crc_table")
  EXPORT SYMBOL("deflate")
  EXPORT SYMBOL("deflateEnd")
  EXPORT SYMBOL("deflateSetDictionary")
  EXPORT SYMBOL("deflateCopy")
  EXPORT SYMBOL("deflateReset")
  EXPORT SYMBOL("deflateParams")
  EXPORT SYMBOL("deflatePrime")
  EXPORT SYMBOL("deflateInit_")
  EXPORT SYMBOL("deflateInit2_")
  EXPORT SYMBOL("gzopen")
  EXPORT SYMBOL("gzdopen")
  EXPORT SYMBOL("gzsetparams")
  EXPORT SYMBOL("gzread")
  EXPORT SYMBOL("gzwrite")
  EXPORT SYMBOL("gzprintf")
  EXPORT SYMBOL("gzputs")
  EXPORT SYMBOL("gzgets")
  EXPORT SYMBOL("gzputc")
  EXPORT SYMBOL("gzgetc")
  EXPORT SYMBOL("gzflush")
  EXPORT SYMBOL("gzseek")
  EXPORT SYMBOL("gzrewind")
  EXPORT SYMBOL("gztell")
  EXPORT SYMBOL("gzeof")
  EXPORT SYMBOL("gzclose")
  EXPORT SYMBOL("gzerror")
  EXPORT SYMBOL("inflate")
  EXPORT SYMBOL("inflateEnd")
  EXPORT SYMBOL("inflateSetDictionary")
  EXPORT SYMBOL("inflateSync")
  EXPORT SYMBOL("inflateReset")
  EXPORT SYMBOL("inflateInit_")
  EXPORT SYMBOL("inflateInit2_")
  EXPORT SYMBOL("inflateSyncPoint")
  EXPORT SYMBOL("uncompress")
  EXPORT SYMBOL("zlibVersion")
  EXPORT SYMBOL("zError")
  EXPORT SYMBOL("z_errmsg")

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.2.1 additional entry points.                         */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("compressBound")
  EXPORT SYMBOL("deflateBound")
  EXPORT SYMBOL("deflatePending")
  EXPORT SYMBOL("gzungetc")
  EXPORT SYMBOL("gzclearerr")
  EXPORT SYMBOL("inflateBack")
  EXPORT SYMBOL("inflateBackEnd")
  EXPORT SYMBOL("inflateBackInit_")
  EXPORT SYMBOL("inflateCopy")
  EXPORT SYMBOL("zlibCompileFlags")

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.2.4 additional entry points.                         */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("adler32_combine")
  EXPORT SYMBOL("adler32_combine64")
  EXPORT SYMBOL("crc32_combine")
  EXPORT SYMBOL("crc32_combine64")
  EXPORT SYMBOL("deflateSetHeader")
  EXPORT SYMBOL("deflateTune")
  EXPORT SYMBOL("gzbuffer")
  EXPORT SYMBOL("gzclose_r")
  EXPORT SYMBOL("gzclose_w")
  EXPORT SYMBOL("gzdirect")
  EXPORT SYMBOL("gzoffset")
  EXPORT SYMBOL("gzoffset64")
  EXPORT SYMBOL("gzopen64")
  EXPORT SYMBOL("gzseek64")
  EXPORT SYMBOL("gztell64")
  EXPORT SYMBOL("inflateGetHeader")
  EXPORT SYMBOL("inflateMark")
  EXPORT SYMBOL("inflatePrime")
  EXPORT SYMBOL("inflateReset2")
  EXPORT SYMBOL("inflateUndermine")

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.2.6 additional entry points.                         */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("deflateResetKeep")
  EXPORT SYMBOL("gzgetc_")
  EXPORT SYMBOL("inflateResetKeep")

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.2.8 additional entry points.                         */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("gzvprintf")
  EXPORT SYMBOL("inflateGetDictionary")

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.2.9 additional entry points.                         */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("adler32_z")
  EXPORT SYMBOL("crc32_z")
  EXPORT SYMBOL("deflateGetDictionary")
  EXPORT SYMBOL("gzfread")
  EXPORT SYMBOL("gzfwrite")
  EXPORT SYMBOL("inflateCodesUsed")
  EXPORT SYMBOL("inflateValidate")
  EXPORT SYMBOL("uncompress2")

/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*   Version 1.2.12 additional entry points.                        */
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

  EXPORT SYMBOL("crc32_combine_gen64")
  EXPORT SYMBOL("crc32_combine_gen")
  EXPORT SYMBOL("crc32_combine_op")

ENDPGMEXP
Added compat/zlib/os400/make.sh.














































































































































































































































































































































































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#!/bin/sh
#
#       ZLIB compilation script for the OS/400.
#
#
#       This is a shell script since make is not a standard component of OS/400.


################################################################################
#
#                       Tunable configuration parameters.
#
################################################################################

TARGETLIB='ZLIB'                # Target OS/400 program library
STATBNDDIR='ZLIB_A'             # Static binding directory.
DYNBNDDIR='ZLIB'                # Dynamic binding directory.
SRVPGM="ZLIB"                   # Service program.
IFSDIR='/zlib'                  # IFS support base directory.
TGTCCSID='500'                  # Target CCSID of objects
DEBUG='*NONE'                   # Debug level
OPTIMIZE='40'                   # Optimisation level
OUTPUT='*NONE'                  # Compilation output option.
TGTRLS='V6R1M0'                 # Target OS release

export TARGETLIB STATBNDDIR DYNBNDDIR SRVPGM IFSDIR
export TGTCCSID DEBUG OPTIMIZE OUTPUT TGTRLS


################################################################################
#
#                       OS/400 specific definitions.
#
################################################################################

LIBIFSNAME="/QSYS.LIB/${TARGETLIB}.LIB"


################################################################################
#
#                               Procedures.
#
################################################################################

#       action_needed dest [src]
#
#       dest is an object to build
#       if specified, src is an object on which dest depends.
#
#       exit 0 (succeeds) if some action has to be taken, else 1.

action_needed()

{
        [ ! -e "${1}" ] && return 0
        [ "${2}" ] || return 1
        [ "${1}" -ot "${2}" ] && return 0
        return 1
}


#       make_module module_name source_name [additional_definitions]
#
#       Compile source name into module if needed.
#       As side effect, append the module name to variable MODULES.
#       Set LINK to "YES" if the module has been compiled.

make_module()

{
    MODULES="${MODULES} ${1}"
    MODIFSNAME="${LIBIFSNAME}/${1}.MODULE"
    CSRC="`basename \"${2}\"`"

    if action_needed "${MODIFSNAME}" "${2}"
    then    :
    elif [ ! "`sed -e \"/<source name=\\\"${CSRC}\\\">/,/<\\\\/source>/!d\" \
      -e '/<depend /!d'                                                 \
      -e 's/.* name=\"\\([^\"]*\\)\".*/\\1/' < \"${TOPDIR}/treebuild.xml\" |
        while read HDR
        do      if action_needed \"${MODIFSNAME}\" \"${IFSDIR}/include/${HDR}\"
                then    echo recompile
                        break
                fi
        done`" ]
    then    return 0
    fi

    CMD="CRTCMOD MODULE(${TARGETLIB}/${1}) SRCSTMF('${2}')"
    CMD="${CMD} SYSIFCOPT(*IFS64IO) OPTION(*INCDIRFIRST)"
    CMD="${CMD} LOCALETYPE(*LOCALE) FLAG(10)"
    CMD="${CMD} INCDIR('${IFSDIR}/include' ${INCLUDES})"
    CMD="${CMD} TGTCCSID(${TGTCCSID}) TGTRLS(${TGTRLS})"
    CMD="${CMD} OUTPUT(${OUTPUT})"
    CMD="${CMD} OPTIMIZE(${OPTIMIZE})"
    CMD="${CMD} DBGVIEW(${DEBUG})"
    system "${CMD}"
    LINK=YES
}


#       Determine DB2 object name from IFS name.

db2_name()

{
        basename "${1}"                                                 |
        tr 'a-z-' 'A-Z_'                                                |
        sed -e 's/\..*//'                                               \
            -e 's/^\(.\).*\(.........\)$/\1\2/'
}


#       Force enumeration types to be the same size as integers.

copy_hfile()

{
        sed -e '1i\
#pragma enum(int)\
' "${@}" -e '$a\
#pragma enum(pop)\
'
}


################################################################################
#
#                             Script initialization.
#
################################################################################

SCRIPTDIR=`dirname "${0}"`

case "${SCRIPTDIR}" in
/*)     ;;
*)      SCRIPTDIR="`pwd`/${SCRIPTDIR}"
esac

while true
do      case "${SCRIPTDIR}" in
        */.)    SCRIPTDIR="${SCRIPTDIR%/.}";;
        *)      break;;
        esac
done

#  The script directory is supposed to be in ${TOPDIR}/os400.

TOPDIR=`dirname "${SCRIPTDIR}"`
export SCRIPTDIR TOPDIR
cd "${TOPDIR}"


#  Extract the version from the master compilation XML file.

VERSION=`sed -e '/^<package /!d'                                        \
            -e 's/^.* version="\([0-9.]*\)".*$/\1/' -e 'q'              \
            < treebuild.xml`
export VERSION

################################################################################


#       Create the OS/400 library if it does not exist.

if action_needed "${LIBIFSNAME}"
then    CMD="CRTLIB LIB(${TARGETLIB}) TEXT('ZLIB: Data compression API')"
        system "${CMD}"
fi


#       Create the DOCS source file if it does not exist.

if action_needed "${LIBIFSNAME}/DOCS.FILE"
then    CMD="CRTSRCPF FILE(${TARGETLIB}/DOCS) RCDLEN(112)"
        CMD="${CMD} CCSID(${TGTCCSID}) TEXT('Documentation texts')"
        system "${CMD}"
fi

#       Copy some documentation files if needed.

for TEXT in "${TOPDIR}/ChangeLog" "${TOPDIR}/FAQ"                       \
    "${TOPDIR}/README" "${SCRIPTDIR}/README400"
do      MEMBER="${LIBIFSNAME}/DOCS.FILE/`db2_name \"${TEXT}\"`.MBR"

        if action_needed "${MEMBER}" "${TEXT}"
        then    CMD="CPY OBJ('${TEXT}') TOOBJ('${MEMBER}') TOCCSID(${TGTCCSID})"
                CMD="${CMD} DTAFMT(*TEXT) REPLACE(*YES)"
                system "${CMD}"
        fi
done


#       Create the OS/400 source program file for the C header files.

SRCPF="${LIBIFSNAME}/H.FILE"

if action_needed "${SRCPF}"
then    CMD="CRTSRCPF FILE(${TARGETLIB}/H) RCDLEN(112)"
        CMD="${CMD} CCSID(${TGTCCSID}) TEXT('ZLIB: C/C++ header files')"
        system "${CMD}"
fi


#       Create the IFS directory for the C header files.

if action_needed "${IFSDIR}/include"
then    mkdir -p "${IFSDIR}/include"
fi

#       Copy the header files to DB2 library. Link from IFS include directory.

for HFILE in "${TOPDIR}/"*.h
do      DEST="${SRCPF}/`db2_name \"${HFILE}\"`.MBR"

        if action_needed "${DEST}" "${HFILE}"
        then    copy_hfile < "${HFILE}" > tmphdrfile

                #       Need to translate to target CCSID.

                CMD="CPY OBJ('`pwd`/tmphdrfile') TOOBJ('${DEST}')"
                CMD="${CMD} TOCCSID(${TGTCCSID}) DTAFMT(*TEXT) REPLACE(*YES)"
                system "${CMD}"
                # touch -r "${HFILE}" "${DEST}"
                rm -f tmphdrfile
        fi

        IFSFILE="${IFSDIR}/include/`basename \"${HFILE}\"`"

        if action_needed "${IFSFILE}" "${DEST}"
        then    rm -f "${IFSFILE}"
                ln -s "${DEST}" "${IFSFILE}"
        fi
done


#       Install the ILE/RPG header file.


HFILE="${SCRIPTDIR}/zlib.inc"
DEST="${SRCPF}/ZLIB.INC.MBR"

if action_needed "${DEST}" "${HFILE}"
then    CMD="CPY OBJ('${HFILE}') TOOBJ('${DEST}')"
        CMD="${CMD} TOCCSID(${TGTCCSID}) DTAFMT(*TEXT) REPLACE(*YES)"
        system "${CMD}"
        # touch -r "${HFILE}" "${DEST}"
fi

IFSFILE="${IFSDIR}/include/`basename \"${HFILE}\"`"

if action_needed "${IFSFILE}" "${DEST}"
then    rm -f "${IFSFILE}"
        ln -s "${DEST}" "${IFSFILE}"
fi


#      Create and compile the identification source file.

echo '#pragma comment(user, "ZLIB version '"${VERSION}"'")' > os400.c
echo '#pragma comment(user, __DATE__)' >> os400.c
echo '#pragma comment(user, __TIME__)' >> os400.c
echo '#pragma comment(copyright, "Copyright (C) 1995-2017 Jean-Loup Gailly, Mark Adler. OS/400 version by P. Monnerat.")' >> os400.c
make_module     OS400           os400.c
LINK=                           # No need to rebuild service program yet.
MODULES=


#       Get source list.

CSOURCES=`sed -e '/<source name="/!d'                                   \
    -e 's/.* name="\([^"]*\)".*/\1/' < treebuild.xml`

#       Compile the sources into modules.

for SRC in ${CSOURCES}
do      MODULE=`db2_name "${SRC}"`
        make_module "${MODULE}" "${SRC}"
done


#       If needed, (re)create the static binding directory.

if action_needed "${LIBIFSNAME}/${STATBNDDIR}.BNDDIR"
then    LINK=YES
fi

if [ "${LINK}" ]
then    rm -rf "${LIBIFSNAME}/${STATBNDDIR}.BNDDIR"
        CMD="CRTBNDDIR BNDDIR(${TARGETLIB}/${STATBNDDIR})"
        CMD="${CMD} TEXT('ZLIB static binding directory')"
        system "${CMD}"

        for MODULE in ${MODULES}
        do      CMD="ADDBNDDIRE BNDDIR(${TARGETLIB}/${STATBNDDIR})"
                CMD="${CMD} OBJ((${TARGETLIB}/${MODULE} *MODULE))"
                system "${CMD}"
        done
fi


#       The exportation file for service program creation must be in a DB2
#               source file, so make sure it exists.

if action_needed "${LIBIFSNAME}/TOOLS.FILE"
then    CMD="CRTSRCPF FILE(${TARGETLIB}/TOOLS) RCDLEN(112)"
        CMD="${CMD} CCSID(${TGTCCSID}) TEXT('ZLIB: build tools')"
        system "${CMD}"
fi


DEST="${LIBIFSNAME}/TOOLS.FILE/BNDSRC.MBR"

if action_needed "${SCRIPTDIR}/bndsrc" "${DEST}"
then    CMD="CPY OBJ('${SCRIPTDIR}/bndsrc') TOOBJ('${DEST}')"
        CMD="${CMD} TOCCSID(${TGTCCSID}) DTAFMT(*TEXT) REPLACE(*YES)"
        system "${CMD}"
        # touch -r "${SCRIPTDIR}/bndsrc" "${DEST}"
        LINK=YES
fi


#       Build the service program if needed.

if action_needed "${LIBIFSNAME}/${SRVPGM}.SRVPGM"
then    LINK=YES
fi

if [ "${LINK}" ]
then    CMD="CRTSRVPGM SRVPGM(${TARGETLIB}/${SRVPGM})"
        CMD="${CMD} SRCFILE(${TARGETLIB}/TOOLS) SRCMBR(BNDSRC)"
        CMD="${CMD} MODULE(${TARGETLIB}/OS400)"
        CMD="${CMD} BNDDIR(${TARGETLIB}/${STATBNDDIR})"
        CMD="${CMD} TEXT('ZLIB ${VERSION} dynamic library')"
        CMD="${CMD} TGTRLS(${TGTRLS})"
        system "${CMD}"
        LINK=YES

        #       Duplicate the service program for a versioned backup.

        BACKUP=`echo "${SRVPGM}${VERSION}"                              |
                sed -e 's/.*\(..........\)$/\1/' -e 's/\./_/g'`
        BACKUP="`db2_name \"${BACKUP}\"`"
        BKUPIFSNAME="${LIBIFSNAME}/${BACKUP}.SRVPGM"
        rm -f "${BKUPIFSNAME}"
        CMD="CRTDUPOBJ OBJ(${SRVPGM}) FROMLIB(${TARGETLIB})"
        CMD="${CMD} OBJTYPE(*SRVPGM) NEWOBJ(${BACKUP})"
        system "${CMD}"
fi


#       If needed, (re)create the dynamic binding directory.

if action_needed "${LIBIFSNAME}/${DYNBNDDIR}.BNDDIR"
then    LINK=YES
fi

if [ "${LINK}" ]
then    rm -rf "${LIBIFSNAME}/${DYNBNDDIR}.BNDDIR"
        CMD="CRTBNDDIR BNDDIR(${TARGETLIB}/${DYNBNDDIR})"
        CMD="${CMD} TEXT('ZLIB dynamic binding directory')"
        system "${CMD}"
        CMD="ADDBNDDIRE BNDDIR(${TARGETLIB}/${DYNBNDDIR})"
        CMD="${CMD} OBJ((*LIBL/${SRVPGM} *SRVPGM))"
        system "${CMD}"
fi
Added compat/zlib/os400/zlib.inc.















































































































































































































































































































































































































































































































































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      *  ZLIB.INC - Interface to the general purpose compression library
      *
      *  ILE RPG400 version by Patrick Monnerat, DATASPHERE.
      *  Version 1.3.1
      *
      *
      *  WARNING:
      *     Procedures inflateInit(), inflateInit2(), deflateInit(),
      *         deflateInit2() and inflateBackInit() need to be called with
      *         two additional arguments:
      *         the package version string and the stream control structure.
      *         size. This is needed because RPG lacks some macro feature.
      *         Call these procedures as:
      *             inflateInit(...: ZLIB_VERSION: %size(z_stream))
      *
      /if not defined(ZLIB_H_)
      /define ZLIB_H_
      *
      **************************************************************************
      *                               Constants
      **************************************************************************
      *
      *  Versioning information.
      *
     D ZLIB_VERSION    C                   '1.3.1'
     D ZLIB_VERNUM     C                   X'12a0'
     D ZLIB_VER_MAJOR  C                   1
     D ZLIB_VER_MINOR  C                   3
     D ZLIB_VER_REVISION...
     D                 C                   1
     D ZLIB_VER_SUBREVISION...
     D                 C                   0
      *
      *  Other equates.
      *
     D Z_NO_FLUSH      C                   0
     D Z_PARTIAL_FLUSH...
     D                 C                   1
     D Z_SYNC_FLUSH    C                   2
     D Z_FULL_FLUSH    C                   3
     D Z_FINISH        C                   4
     D Z_BLOCK         C                   5
     D Z_TREES         C                   6
      *
     D Z_OK            C                   0
     D Z_STREAM_END    C                   1
     D Z_NEED_DICT     C                   2
     D Z_ERRNO         C                   -1
     D Z_STREAM_ERROR  C                   -2
     D Z_DATA_ERROR    C                   -3
     D Z_MEM_ERROR     C                   -4
     D Z_BUF_ERROR     C                   -5
     D Z_VERSION_ERROR C                   -6
      *
     D Z_NO_COMPRESSION...
     D                 C                   0
     D Z_BEST_SPEED    C                   1
     D Z_BEST_COMPRESSION...
     D                 C                   9
     D Z_DEFAULT_COMPRESSION...
     D                 C                   -1
      *
     D Z_FILTERED      C                   1
     D Z_HUFFMAN_ONLY  C                   2
     D Z_RLE           C                   3
     D Z_DEFAULT_STRATEGY...
     D                 C                   0
      *
     D Z_BINARY        C                   0
     D Z_ASCII         C                   1
     D Z_UNKNOWN       C                   2
      *
     D Z_DEFLATED      C                   8
      *
     D Z_NULL          C                   0
      *
      **************************************************************************
      *                                 Types
      **************************************************************************
      *
     D z_streamp       S               *                                        Stream struct ptr
     D gzFile          S               *                                        File pointer
     D gz_headerp      S               *
     D z_off_t         S             10i 0                                      Stream offsets
     D z_off64_t       S             20i 0                                      Stream offsets
      *
      **************************************************************************
      *                               Structures
      **************************************************************************
      *
      *  The GZIP encode/decode stream support structure.
      *
     D z_stream        DS                  align based(z_streamp)
     D  zs_next_in                     *                                        Next input byte
     D  zs_avail_in                  10U 0                                      Byte cnt at next_in
     D  zs_total_in                  10U 0                                      Total bytes read
     D  zs_next_out                    *                                        Output buffer ptr
     D  zs_avail_out                 10U 0                                      Room left @ next_out
     D  zs_total_out                 10U 0                                      Total bytes written
     D  zs_msg                         *                                        Last errmsg or null
     D  zs_state                       *                                        Internal state
     D  zs_zalloc                      *   procptr                              Int. state allocator
     D  zs_free                        *   procptr                              Int. state dealloc.
     D  zs_opaque                      *                                        Private alloc. data
     D  zs_data_type                 10i 0                                      ASC/BIN best guess
     D  zs_adler                     10u 0                                      Uncompr. adler32 val
     D                               10U 0                                      Reserved
     D                               10U 0                                      Ptr. alignment
      *
      **************************************************************************
      *                     Utility function prototypes
      **************************************************************************
      *
     D compress        PR            10I 0 extproc('compress')
     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10u 0 value                                Source length
      *
     D compress2       PR            10I 0 extproc('compress2')
     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10U 0 value                                Source length
     D  level                        10I 0 value                                Compression level
      *
     D compressBound   PR            10U 0 extproc('compressBound')
     D  sourceLen                    10U 0 value
      *
     D uncompress      PR            10I 0 extproc('uncompress')
     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10U 0 value                                Source length
      *
     D uncompress2     PR            10I 0 extproc('uncompress2')
     D  dest                      65535    options(*varsize)                    Destination buffer
     D  destLen                      10U 0                                      Destination length
     D  source                    65535    const options(*varsize)              Source buffer
     D  sourceLen                    10U 0                                      Source length
      *
      /if not defined(LARGE_FILES)
     D gzopen          PR                  extproc('gzopen')
     D                                     like(gzFile)
     D  path                           *   value options(*string)               File pathname
     D  mode                           *   value options(*string)               Open mode
      /else
     D gzopen          PR                  extproc('gzopen64')
     D                                     like(gzFile)
     D  path                           *   value options(*string)               File pathname
     D  mode                           *   value options(*string)               Open mode
      *
     D gzopen64        PR                  extproc('gzopen64')
     D                                     like(gzFile)
     D  path                           *   value options(*string)               File pathname
     D  mode                           *   value options(*string)               Open mode
      /endif
      *
     D gzdopen         PR                  extproc('gzdopen')
     D                                     like(gzFile)
     D  fd                           10I 0 value                                File descriptor
     D  mode                           *   value options(*string)               Open mode
      *
     D gzbuffer        PR            10I 0 extproc('gzbuffer')
     D  file                               value like(gzFile)                   File pointer
     D  size                         10U 0 value
      *
     D gzsetparams     PR            10I 0 extproc('gzsetparams')
     D  file                               value like(gzFile)                   File pointer
     D  level                        10I 0 value
     D  strategy                     10I 0 value
      *
     D gzread          PR            10I 0 extproc('gzread')
     D  file                               value like(gzFile)                   File pointer
     D  buf                       65535    options(*varsize)                    Buffer
     D  len                          10u 0 value                                Buffer length
      *
     D gzfread          PR           20I 0 extproc('gzfread')
     D  buf                       65535    options(*varsize)                    Buffer
     D  size                         20u 0 value                                Buffer length
     D  nitems                       20u 0 value                                Buffer length
     D  file                               value like(gzFile)                   File pointer
      *
     D gzwrite         PR            10I 0 extproc('gzwrite')
     D  file                               value like(gzFile)                   File pointer
     D  buf                       65535    const options(*varsize)              Buffer
     D  len                          10u 0 value                                Buffer length
      *
     D gzfwrite         PR           20I 0 extproc('gzfwrite')
     D  buf                       65535    options(*varsize)                    Buffer
     D  size                         20u 0 value                                Buffer length
     D  nitems                       20u 0 value                                Buffer length
     D  file                               value like(gzFile)                   File pointer
      *
     D gzputs          PR            10I 0 extproc('gzputs')
     D  file                               value like(gzFile)                   File pointer
     D  s                              *   value options(*string)               String to output
      *
     D gzgets          PR              *   extproc('gzgets')
     D  file                               value like(gzFile)                   File pointer
     D  buf                       65535    options(*varsize)                    Read buffer
     D  len                          10i 0 value                                Buffer length
      *
     D gzputc          PR            10i 0 extproc('gzputc')
     D  file                               value like(gzFile)                   File pointer
     D  c                            10I 0 value                                Character to write
      *
     D gzgetc          PR            10i 0 extproc('gzgetc')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzgetc_         PR            10i 0 extproc('gzgetc_')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzungetc        PR            10i 0 extproc('gzungetc')
     D  c                            10I 0 value                                Character to push
     D  file                               value like(gzFile)                   File pointer
      *
     D gzflush         PR            10i 0 extproc('gzflush')
     D  file                               value like(gzFile)                   File pointer
     D  flush                        10I 0 value                                Type of flush
      *
      /if not defined(LARGE_FILES)
     D gzseek          PR                  extproc('gzseek')
     D                                     like(z_off_t)
     D  file                               value like(gzFile)                   File pointer
     D  offset                             value like(z_off_t)                  Offset
     D  whence                       10i 0 value                                Origin
      /else
     D gzseek          PR                  extproc('gzseek64')
     D                                     like(z_off_t)
     D  file                               value like(gzFile)                   File pointer
     D  offset                             value like(z_off_t)                  Offset
     D  whence                       10i 0 value                                Origin
      *
     D gzseek64        PR                  extproc('gzseek64')
     D                                     like(z_off64_t)
     D  file                               value like(gzFile)                   File pointer
     D  offset                             value like(z_off64_t)                Offset
     D  whence                       10i 0 value                                Origin
      /endif
      *
     D gzrewind        PR            10i 0 extproc('gzrewind')
     D  file                               value like(gzFile)                   File pointer
      *
      /if not defined(LARGE_FILES)
     D gztell          PR                  extproc('gztell')
     D                                     like(z_off_t)
     D  file                               value like(gzFile)                   File pointer
      /else
     D gztell          PR                  extproc('gztell64')
     D                                     like(z_off_t)
     D  file                               value like(gzFile)                   File pointer
      *
     D gztell64        PR                  extproc('gztell64')
     D                                     like(z_off64_t)
     D  file                               value like(gzFile)                   File pointer
      /endif
      *
      /if not defined(LARGE_FILES)
     D gzoffset        PR                  extproc('gzoffset')
     D                                     like(z_off_t)
     D  file                               value like(gzFile)                   File pointer
      /else
     D gzoffset        PR                  extproc('gzoffset64')
     D                                     like(z_off_t)
     D  file                               value like(gzFile)                   File pointer
      *
     D gzoffset64      PR                  extproc('gzoffset64')
     D                                     like(z_off64_t)
     D  file                               value like(gzFile)                   File pointer
      /endif
      *
     D gzeof           PR            10i 0 extproc('gzeof')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzdirect        PR            10i 0 extproc('gzdirect')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzclose_r       PR            10i 0 extproc('gzclose_r')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzclose_w       PR            10i 0 extproc('gzclose_w')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzclose         PR            10i 0 extproc('gzclose')
     D  file                               value like(gzFile)                   File pointer
      *
     D gzerror         PR              *   extproc('gzerror')                   Error string
     D  file                               value like(gzFile)                   File pointer
     D  errnum                       10I 0                                      Error code
      *
     D gzclearerr      PR                  extproc('gzclearerr')
     D  file                               value like(gzFile)                   File pointer
      *
      **************************************************************************
      *                        Basic function prototypes
      **************************************************************************
      *
     D zlibVersion     PR              *   extproc('zlibVersion')               Version string
      *
     D deflateInit     PR            10I 0 extproc('deflateInit_')              Init. compression
     D  strm                               like(z_stream)                       Compression stream
     D  level                        10I 0 value                                Compression level
     D  version                        *   value options(*string)               Version string
     D  stream_size                  10i 0 value                                Stream struct. size
      *
     D deflate         PR            10I 0 extproc('deflate')                   Compress data
     D  strm                               like(z_stream)                       Compression stream
     D  flush                        10I 0 value                                Flush type required
      *
     D deflateEnd      PR            10I 0 extproc('deflateEnd')                Termin. compression
     D  strm                               like(z_stream)                       Compression stream
      *
     D inflateInit     PR            10I 0 extproc('inflateInit_')              Init. expansion
     D  strm                               like(z_stream)                       Expansion stream
     D  version                        *   value options(*string)               Version string
     D  stream_size                  10i 0 value                                Stream struct. size
      *
     D inflate         PR            10I 0 extproc('inflate')                   Expand data
     D  strm                               like(z_stream)                       Expansion stream
     D  flush                        10I 0 value                                Flush type required
      *
     D inflateEnd      PR            10I 0 extproc('inflateEnd')                Termin. expansion
     D  strm                               like(z_stream)                       Expansion stream
      *
      **************************************************************************
      *                        Advanced function prototypes
      **************************************************************************
      *
     D deflateInit2    PR            10I 0 extproc('deflateInit2_')             Init. compression
     D  strm                               like(z_stream)                       Compression stream
     D  level                        10I 0 value                                Compression level
     D  method                       10I 0 value                                Compression method
     D  windowBits                   10I 0 value                                log2(window size)
     D  memLevel                     10I 0 value                                Mem/cmpress tradeoff
     D  strategy                     10I 0 value                                Compression strategy
     D  version                        *   value options(*string)               Version string
     D  stream_size                  10i 0 value                                Stream struct. size
      *
     D deflateSetDictionary...
     D                 PR            10I 0 extproc('deflateSetDictionary')      Init. dictionary
     D  strm                               like(z_stream)                       Compression stream
     D  dictionary                65535    const options(*varsize)              Dictionary bytes
     D  dictLength                   10U 0 value                                Dictionary length
      *
     D deflateCopy     PR            10I 0 extproc('deflateCopy')               Compress strm 2 strm
     D  dest                               like(z_stream)                       Destination stream
     D  source                             like(z_stream)                       Source stream
      *
     D deflateReset    PR            10I 0 extproc('deflateReset')              End and init. stream
     D  strm                               like(z_stream)                       Compression stream
      *
     D deflateParams   PR            10I 0 extproc('deflateParams')             Change level & strat
     D  strm                               like(z_stream)                       Compression stream
     D  level                        10I 0 value                                Compression level
     D  strategy                     10I 0 value                                Compression strategy
      *
     D deflateTune     PR            10I 0 extproc('deflateTune')
     D  strm                               like(z_stream)                       Compression stream
     D  good                         10I 0 value
     D  lazy                         10I 0 value
     D  nice                         10I 0 value
     D  chain                        10I 0 value
      *
     D deflateBound    PR            10U 0 extproc('deflateBound')              Change level & strat
     D  strm                               like(z_stream)                       Compression stream
     D  sourcelen                    10U 0 value                                Compression level
      *
     D deflatePending  PR            10I 0 extproc('deflatePending')            Change level & strat
     D  strm                               like(z_stream)                       Compression stream
     D  pending                      10U 0                                      Pending bytes
     D  bits                         10I 0                                      Pending bits
      *
     D deflatePrime    PR            10I 0 extproc('deflatePrime')              Change level & strat
     D  strm                               like(z_stream)                       Compression stream
     D  bits                         10I 0 value                                # of bits to insert
     D  value                        10I 0 value                                Bits to insert
      *
     D inflateInit2    PR            10I 0 extproc('inflateInit2_')             Init. expansion
     D  strm                               like(z_stream)                       Expansion stream
     D  windowBits                   10I 0 value                                log2(window size)
     D  version                        *   value options(*string)               Version string
     D  stream_size                  10i 0 value                                Stream struct. size
      *
     D inflateSetDictionary...
     D                 PR            10I 0 extproc('inflateSetDictionary')      Init. dictionary
     D  strm                               like(z_stream)                       Expansion stream
     D  dictionary                65535    const options(*varsize)              Dictionary bytes
     D  dictLength                   10U 0 value                                Dictionary length
      *
     D inflateGetDictionary...
     D                 PR            10I 0 extproc('inflateGetDictionary')      Get dictionary
     D  strm                               like(z_stream)                       Expansion stream
     D  dictionary                65535    options(*varsize)                    Dictionary bytes
     D  dictLength                   10U 0                                      Dictionary length
      *
     D deflateGetDictionary...
     D                 PR            10I 0 extproc('deflateGetDictionary')      Get dictionary
     D  strm                               like(z_stream)                       Expansion stream
     D  dictionary                65535    options(*varsize)                    Dictionary bytes
     D  dictLength                   10U 0                                      Dictionary length
      *
     D inflateSync     PR            10I 0 extproc('inflateSync')               Sync. expansion
     D  strm                               like(z_stream)                       Expansion stream
      *
     D inflateCopy     PR            10I 0 extproc('inflateCopy')
     D  dest                               like(z_stream)                       Destination stream
     D  source                             like(z_stream)                       Source stream
      *
     D inflateReset    PR            10I 0 extproc('inflateReset')              End and init. stream
     D  strm                               like(z_stream)                       Expansion stream
      *
     D inflateReset2   PR            10I 0 extproc('inflateReset2')             End and init. stream
     D  strm                               like(z_stream)                       Expansion stream
     D  windowBits                   10I 0 value                                Log2(buffer size)
      *
     D inflatePrime    PR            10I 0 extproc('inflatePrime')              Insert bits
     D  strm                               like(z_stream)                       Expansion stream
     D  bits                         10I 0 value                                Bit count
     D  value                        10I 0 value                                Bits to insert
      *
     D inflateMark     PR            10I 0 extproc('inflateMark')               Get inflate info
     D  strm                               like(z_stream)                       Expansion stream
      *
     D inflateCodesUsed...
                       PR            20U 0 extproc('inflateCodesUsed')
     D  strm                               like(z_stream)                       Expansion stream
      *
     D inflateValidate...
                       PR            20U 0 extproc('inflateValidate')
     D  strm                               like(z_stream)                       Expansion stream
     D  check                        10I 0 value
      *
     D inflateGetHeader...
                       PR            10U 0 extproc('inflateGetHeader')
     D  strm                               like(z_stream)                       Expansion stream
     D  head                               like(gz_headerp)
      *
     D deflateSetHeader...
                       PR            10U 0 extproc('deflateSetHeader')
     D  strm                               like(z_stream)                       Expansion stream
     D  head                               like(gz_headerp)
      *
     D inflateBackInit...
     D                 PR            10I 0 extproc('inflateBackInit_')
     D  strm                               like(z_stream)                       Expansion stream
     D  windowBits                   10I 0 value                                Log2(buffer size)
     D  window                    65535    options(*varsize)                    Buffer
     D  version                        *   value options(*string)               Version string
     D  stream_size                  10i 0 value                                Stream struct. size
      *
     D inflateBack     PR            10I 0 extproc('inflateBack')
     D  strm                               like(z_stream)                       Expansion stream
     D  in                             *   value procptr                        Input function
     D  in_desc                        *   value                                Input descriptor
     D  out                            *   value procptr                        Output function
     D  out_desc                       *   value                                Output descriptor
      *
     D inflateBackEnd  PR            10I 0 extproc('inflateBackEnd')
     D  strm                               like(z_stream)                       Expansion stream
      *
     D zlibCompileFlags...
     D                 PR            10U 0 extproc('zlibCompileFlags')
      *
      **************************************************************************
      *                        Checksum function prototypes
      **************************************************************************
      *
     D adler32         PR            10U 0 extproc('adler32')                   New checksum
     D  adler                        10U 0 value                                Old checksum
     D  buf                       65535    const options(*varsize)              Bytes to accumulate
     D  len                          10U 0 value                                Buffer length
      *
     D adler32_combine...
                       PR            10U 0 extproc('adler32_combine')           New checksum
     D  adler1                       10U 0 value                                Old checksum
     D  adler2                       10U 0 value                                Old checksum
     D  len2                         20U 0 value                                Buffer length
      *
     D adler32_z       PR            10U 0 extproc('adler32_z')                 New checksum
     D  adler                        10U 0 value                                Old checksum
     D  buf                       65535    const options(*varsize)              Bytes to accumulate
     D  len                          20U 0 value                                Buffer length
      *
     D crc32           PR            10U 0 extproc('crc32')                     New checksum
     D  crc                          10U 0 value                                Old checksum
     D  buf                       65535    const options(*varsize)              Bytes to accumulate
     D  len                          10U 0 value                                Buffer length
      *
     D crc32_combine...
                       PR            10U 0 extproc('crc32_combine')             New checksum
     D  crc1                         10U 0 value                                Old checksum
     D  crc2                         10U 0 value                                Old checksum
     D  len2                         20U 0 value                                Buffer length
      *
     D crc32_z         PR            10U 0 extproc('crc32_z')                   New checksum
     D  crc                          10U 0 value                                Old checksum
     D  buf                       65535    const options(*varsize)              Bytes to accumulate
     D  len                          20U 0 value                                Buffer length
      *
      **************************************************************************
      *                     Miscellaneous function prototypes
      **************************************************************************
      *
     D zError          PR              *   extproc('zError')                    Error string
     D  err                          10I 0 value                                Error code
      *
     D inflateSyncPoint...
     D                 PR            10I 0 extproc('inflateSyncPoint')
     D  strm                               like(z_stream)                       Expansion stream
      *
     D get_crc_table   PR              *   extproc('get_crc_table')             Ptr to ulongs
      *
     D inflateUndermine...
     D                 PR            10I 0 extproc('inflateUndermine')
     D  strm                               like(z_stream)                       Expansion stream
     D  arg                          10I 0 value                                Error code
      *
     D inflateResetKeep...
     D                 PR            10I 0 extproc('inflateResetKeep')          End and init. stream
     D  strm                               like(z_stream)                       Expansion stream
      *
     D deflateResetKeep...
     D                 PR            10I 0 extproc('deflateResetKeep')          End and init. stream
     D  strm                               like(z_stream)                       Expansion stream
      *
      /endif
Added compat/zlib/qnx/package.qpg.













































































































































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<QPG:Generation>
   <QPG:Options>
      <QPG:User unattended="no" verbosity="2" listfiles="yes"/>
      <QPG:Defaults type="qnx_package"/>
      <QPG:Source></QPG:Source>
      <QPG:Release number="+"/>
      <QPG:Build></QPG:Build>
      <QPG:FileSorting strip="yes"/>
      <QPG:Package targets="combine"/>
      <QPG:Repository generate="yes"/>
      <QPG:FinalDir></QPG:FinalDir>
      <QPG:Cleanup></QPG:Cleanup>
   </QPG:Options>

   <QPG:Responsible>
      <QPG:Company></QPG:Company>
      <QPG:Department></QPG:Department>
      <QPG:Group></QPG:Group>
      <QPG:Team></QPG:Team>
      <QPG:Employee></QPG:Employee>
      <QPG:EmailAddress></QPG:EmailAddress>
   </QPG:Responsible>

   <QPG:Values>
      <QPG:Files>
         <QPG:Add file="../zconf.h" install="/opt/include/" user="root:sys" permission="644"/>
         <QPG:Add file="../zlib.h" install="/opt/include/" user="root:sys" permission="644"/>
         <QPG:Add file="../libz.so.1.3.1" install="/opt/lib/" user="root:bin" permission="644"/>
         <QPG:Add file="libz.so" install="/opt/lib/" component="dev" filetype="symlink" linkto="libz.so.1.3.1"/>
         <QPG:Add file="libz.so.1" install="/opt/lib/" filetype="symlink" linkto="libz.so.1.3.1"/>
         <QPG:Add file="../libz.so.1.3.1" install="/opt/lib/" component="slib"/>
      </QPG:Files>

      <QPG:PackageFilter>
         <QPM:PackageManifest>
            <QPM:PackageDescription>
               <QPM:PackageType>Library</QPM:PackageType>
               <QPM:PackageReleaseNotes></QPM:PackageReleaseNotes>
               <QPM:PackageReleaseUrgency>Medium</QPM:PackageReleaseUrgency>
               <QPM:PackageRepository></QPM:PackageRepository>
               <QPM:FileVersion>2.0</QPM:FileVersion>
            </QPM:PackageDescription>

            <QPM:ProductDescription>
               <QPM:ProductName>zlib</QPM:ProductName>
               <QPM:ProductIdentifier>zlib</QPM:ProductIdentifier>
               <QPM:ProductEmail>alain.bonnefoy@icbt.com</QPM:ProductEmail>
               <QPM:VendorName>Public</QPM:VendorName>
               <QPM:VendorInstallName>public</QPM:VendorInstallName>
               <QPM:VendorURL>www.gzip.org/zlib</QPM:VendorURL>
               <QPM:VendorEmbedURL></QPM:VendorEmbedURL>
               <QPM:VendorEmail></QPM:VendorEmail>
               <QPM:AuthorName>Jean-Loup Gailly,Mark Adler</QPM:AuthorName>
               <QPM:AuthorURL>www.gzip.org/zlib</QPM:AuthorURL>
               <QPM:AuthorEmbedURL></QPM:AuthorEmbedURL>
               <QPM:AuthorEmail>zlib@gzip.org</QPM:AuthorEmail>
               <QPM:ProductIconSmall></QPM:ProductIconSmall>
               <QPM:ProductIconLarge></QPM:ProductIconLarge>
               <QPM:ProductDescriptionShort>A massively spiffy yet delicately unobtrusive compression library.</QPM:ProductDescriptionShort>
               <QPM:ProductDescriptionLong>zlib is designed to be a free, general-purpose, legally unencumbered, lossless data compression library for use on virtually any computer hardware and operating system.</QPM:ProductDescriptionLong>
               <QPM:ProductDescriptionURL>http://www.gzip.org/zlib</QPM:ProductDescriptionURL>
               <QPM:ProductDescriptionEmbedURL></QPM:ProductDescriptionEmbedURL>
            </QPM:ProductDescription>

            <QPM:ReleaseDescription>
               <QPM:ReleaseVersion>1.3.1</QPM:ReleaseVersion>
               <QPM:ReleaseUrgency>Medium</QPM:ReleaseUrgency>
               <QPM:ReleaseStability>Stable</QPM:ReleaseStability>
               <QPM:ReleaseNoteMinor></QPM:ReleaseNoteMinor>
               <QPM:ReleaseNoteMajor></QPM:ReleaseNoteMajor>
               <QPM:ExcludeCountries>
                  <QPM:Country></QPM:Country>
               </QPM:ExcludeCountries>

               <QPM:ReleaseCopyright>No License</QPM:ReleaseCopyright>
            </QPM:ReleaseDescription>

            <QPM:ContentDescription>
               <QPM:ContentTopic xmlmultiple="true">Software Development/Libraries and Extensions/C Libraries</QPM:ContentTopic>
               <QPM:ContentKeyword>zlib,compression</QPM:ContentKeyword>
               <QPM:TargetOS>qnx6</QPM:TargetOS>
               <QPM:HostOS>qnx6</QPM:HostOS>
               <QPM:DisplayEnvironment xmlmultiple="true">None</QPM:DisplayEnvironment>
               <QPM:TargetAudience xmlmultiple="true">Developer</QPM:TargetAudience>
            </QPM:ContentDescription>
         </QPM:PackageManifest>
      </QPG:PackageFilter>

      <QPG:PackageFilter proc="none" target="none">
         <QPM:PackageManifest>
            <QPM:ProductInstallationDependencies>
               <QPM:ProductRequirements></QPM:ProductRequirements>
            </QPM:ProductInstallationDependencies>

            <QPM:ProductInstallationProcedure>
               <QPM:Script xmlmultiple="true">
                  <QPM:ScriptName></QPM:ScriptName>
                  <QPM:ScriptType>Install</QPM:ScriptType>
                  <QPM:ScriptTiming>Post</QPM:ScriptTiming>
                  <QPM:ScriptBlocking>No</QPM:ScriptBlocking>
                  <QPM:ScriptResult>Ignore</QPM:ScriptResult>
                  <QPM:ShortDescription></QPM:ShortDescription>
                  <QPM:UseBinaries>No</QPM:UseBinaries>
                  <QPM:Priority>Optional</QPM:Priority>
               </QPM:Script>
            </QPM:ProductInstallationProcedure>
         </QPM:PackageManifest>

         <QPM:Launch>
         </QPM:Launch>
      </QPG:PackageFilter>

      <QPG:PackageFilter type="core" component="none">
         <QPM:PackageManifest>
            <QPM:ProductInstallationProcedure>
	       <QPM:OrderDependency xmlmultiple="true">
	          <QPM:Order>InstallOver</QPM:Order>
	          <QPM:Product>zlib</QPM:Product>
	       </QPM:OrderDependency>
            </QPM:ProductInstallationProcedure>
         </QPM:PackageManifest>

         <QPM:Launch>
         </QPM:Launch>
      </QPG:PackageFilter>

      <QPG:PackageFilter type="core" component="dev">
         <QPM:PackageManifest>
            <QPM:ProductInstallationProcedure>
	       <QPM:OrderDependency xmlmultiple="true">
	          <QPM:Order>InstallOver</QPM:Order>
	          <QPM:Product>zlib-dev</QPM:Product>
	       </QPM:OrderDependency>
            </QPM:ProductInstallationProcedure>
         </QPM:PackageManifest>

         <QPM:Launch>
         </QPM:Launch>
      </QPG:PackageFilter>
   </QPG:Values>
</QPG:Generation>
Added compat/zlib/test/example.c.


































































































































































































































































































































































































































































































































































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/* example.c -- usage example of the zlib compression library
 * Copyright (C) 1995-2006, 2011, 2016 Jean-loup Gailly
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#include "zlib.h"
#include <stdio.h>

#ifdef STDC
#  include <string.h>
#  include <stdlib.h>
#endif

#if defined(VMS) || defined(RISCOS)
#  define TESTFILE "foo-gz"
#else
#  define TESTFILE "foo.gz"
#endif

#define CHECK_ERR(err, msg) { \
    if (err != Z_OK) { \
        fprintf(stderr, "%s error: %d\n", msg, err); \
        exit(1); \
    } \
}

static z_const char hello[] = "hello, hello!";
/* "hello world" would be more standard, but the repeated "hello"
 * stresses the compression code better, sorry...
 */

static const char dictionary[] = "hello";
static uLong dictId;    /* Adler32 value of the dictionary */

#ifdef Z_SOLO

static void *myalloc(void *q, unsigned n, unsigned m) {
    (void)q;
    return calloc(n, m);
}

static void myfree(void *q, void *p) {
    (void)q;
    free(p);
}

static alloc_func zalloc = myalloc;
static free_func zfree = myfree;

#else /* !Z_SOLO */

static alloc_func zalloc = (alloc_func)0;
static free_func zfree = (free_func)0;

/* ===========================================================================
 * Test compress() and uncompress()
 */
static void test_compress(Byte *compr, uLong comprLen, Byte *uncompr,
                   uLong uncomprLen) {
    int err;
    uLong len = (uLong)strlen(hello)+1;

    err = compress(compr, &comprLen, (const Bytef*)hello, len);
    CHECK_ERR(err, "compress");

    strcpy((char*)uncompr, "garbage");

    err = uncompress(uncompr, &uncomprLen, compr, comprLen);
    CHECK_ERR(err, "uncompress");

    if (strcmp((char*)uncompr, hello)) {
        fprintf(stderr, "bad uncompress\n");
        exit(1);
    } else {
        printf("uncompress(): %s\n", (char *)uncompr);
    }
}

/* ===========================================================================
 * Test read/write of .gz files
 */
static void test_gzio(const char *fname, Byte *uncompr, uLong uncomprLen) {
#ifdef NO_GZCOMPRESS
    fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n");
#else
    int err;
    int len = (int)strlen(hello)+1;
    gzFile file;
    z_off_t pos;

    file = gzopen(fname, "wb");
    if (file == NULL) {
        fprintf(stderr, "gzopen error\n");
        exit(1);
    }
    gzputc(file, 'h');
    if (gzputs(file, "ello") != 4) {
        fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err));
        exit(1);
    }
    if (gzprintf(file, ", %s!", "hello") != 8) {
        fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err));
        exit(1);
    }
    gzseek(file, 1L, SEEK_CUR); /* add one zero byte */
    gzclose(file);

    file = gzopen(fname, "rb");
    if (file == NULL) {
        fprintf(stderr, "gzopen error\n");
        exit(1);
    }
    strcpy((char*)uncompr, "garbage");

    if (gzread(file, uncompr, (unsigned)uncomprLen) != len) {
        fprintf(stderr, "gzread err: %s\n", gzerror(file, &err));
        exit(1);
    }
    if (strcmp((char*)uncompr, hello)) {
        fprintf(stderr, "bad gzread: %s\n", (char*)uncompr);
        exit(1);
    } else {
        printf("gzread(): %s\n", (char*)uncompr);
    }

    pos = gzseek(file, -8L, SEEK_CUR);
    if (pos != 6 || gztell(file) != pos) {
        fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n",
                (long)pos, (long)gztell(file));
        exit(1);
    }

    if (gzgetc(file) != ' ') {
        fprintf(stderr, "gzgetc error\n");
        exit(1);
    }

    if (gzungetc(' ', file) != ' ') {
        fprintf(stderr, "gzungetc error\n");
        exit(1);
    }

    gzgets(file, (char*)uncompr, (int)uncomprLen);
    if (strlen((char*)uncompr) != 7) { /* " hello!" */
        fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err));
        exit(1);
    }
    if (strcmp((char*)uncompr, hello + 6)) {
        fprintf(stderr, "bad gzgets after gzseek\n");
        exit(1);
    } else {
        printf("gzgets() after gzseek: %s\n", (char*)uncompr);
    }

    gzclose(file);
#endif
}

#endif /* Z_SOLO */

/* ===========================================================================
 * Test deflate() with small buffers
 */
static void test_deflate(Byte *compr, uLong comprLen) {
    z_stream c_stream; /* compression stream */
    int err;
    uLong len = (uLong)strlen(hello)+1;

    c_stream.zalloc = zalloc;
    c_stream.zfree = zfree;
    c_stream.opaque = (voidpf)0;

    err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
    CHECK_ERR(err, "deflateInit");

    c_stream.next_in  = (z_const unsigned char *)hello;
    c_stream.next_out = compr;

    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
        err = deflate(&c_stream, Z_NO_FLUSH);
        CHECK_ERR(err, "deflate");
    }
    /* Finish the stream, still forcing small buffers: */
    for (;;) {
        c_stream.avail_out = 1;
        err = deflate(&c_stream, Z_FINISH);
        if (err == Z_STREAM_END) break;
        CHECK_ERR(err, "deflate");
    }

    err = deflateEnd(&c_stream);
    CHECK_ERR(err, "deflateEnd");
}

/* ===========================================================================
 * Test inflate() with small buffers
 */
static void test_inflate(Byte *compr, uLong comprLen, Byte *uncompr,
                  uLong uncomprLen) {
    int err;
    z_stream d_stream; /* decompression stream */

    strcpy((char*)uncompr, "garbage");

    d_stream.zalloc = zalloc;
    d_stream.zfree = zfree;
    d_stream.opaque = (voidpf)0;

    d_stream.next_in  = compr;
    d_stream.avail_in = 0;
    d_stream.next_out = uncompr;

    err = inflateInit(&d_stream);
    CHECK_ERR(err, "inflateInit");

    while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) {
        d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */
        err = inflate(&d_stream, Z_NO_FLUSH);
        if (err == Z_STREAM_END) break;
        CHECK_ERR(err, "inflate");
    }

    err = inflateEnd(&d_stream);
    CHECK_ERR(err, "inflateEnd");

    if (strcmp((char*)uncompr, hello)) {
        fprintf(stderr, "bad inflate\n");
        exit(1);
    } else {
        printf("inflate(): %s\n", (char *)uncompr);
    }
}

/* ===========================================================================
 * Test deflate() with large buffers and dynamic change of compression level
 */
static void test_large_deflate(Byte *compr, uLong comprLen, Byte *uncompr,
                        uLong uncomprLen) {
    z_stream c_stream; /* compression stream */
    int err;

    c_stream.zalloc = zalloc;
    c_stream.zfree = zfree;
    c_stream.opaque = (voidpf)0;

    err = deflateInit(&c_stream, Z_BEST_SPEED);
    CHECK_ERR(err, "deflateInit");

    c_stream.next_out = compr;
    c_stream.avail_out = (uInt)comprLen;

    /* At this point, uncompr is still mostly zeroes, so it should compress
     * very well:
     */
    c_stream.next_in = uncompr;
    c_stream.avail_in = (uInt)uncomprLen;
    err = deflate(&c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "deflate");
    if (c_stream.avail_in != 0) {
        fprintf(stderr, "deflate not greedy\n");
        exit(1);
    }

    /* Feed in already compressed data and switch to no compression: */
    deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
    c_stream.next_in = compr;
    c_stream.avail_in = (uInt)uncomprLen/2;
    err = deflate(&c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "deflate");

    /* Switch back to compressing mode: */
    deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
    c_stream.next_in = uncompr;
    c_stream.avail_in = (uInt)uncomprLen;
    err = deflate(&c_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "deflate");

    err = deflate(&c_stream, Z_FINISH);
    if (err != Z_STREAM_END) {
        fprintf(stderr, "deflate should report Z_STREAM_END\n");
        exit(1);
    }
    err = deflateEnd(&c_stream);
    CHECK_ERR(err, "deflateEnd");
}

/* ===========================================================================
 * Test inflate() with large buffers
 */
static void test_large_inflate(Byte *compr, uLong comprLen, Byte *uncompr,
                        uLong uncomprLen) {
    int err;
    z_stream d_stream; /* decompression stream */

    strcpy((char*)uncompr, "garbage");

    d_stream.zalloc = zalloc;
    d_stream.zfree = zfree;
    d_stream.opaque = (voidpf)0;

    d_stream.next_in  = compr;
    d_stream.avail_in = (uInt)comprLen;

    err = inflateInit(&d_stream);
    CHECK_ERR(err, "inflateInit");

    for (;;) {
        d_stream.next_out = uncompr;            /* discard the output */
        d_stream.avail_out = (uInt)uncomprLen;
        err = inflate(&d_stream, Z_NO_FLUSH);
        if (err == Z_STREAM_END) break;
        CHECK_ERR(err, "large inflate");
    }

    err = inflateEnd(&d_stream);
    CHECK_ERR(err, "inflateEnd");

    if (d_stream.total_out != 2*uncomprLen + uncomprLen/2) {
        fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out);
        exit(1);
    } else {
        printf("large_inflate(): OK\n");
    }
}

/* ===========================================================================
 * Test deflate() with full flush
 */
static void test_flush(Byte *compr, uLong *comprLen) {
    z_stream c_stream; /* compression stream */
    int err;
    uInt len = (uInt)strlen(hello)+1;

    c_stream.zalloc = zalloc;
    c_stream.zfree = zfree;
    c_stream.opaque = (voidpf)0;

    err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
    CHECK_ERR(err, "deflateInit");

    c_stream.next_in  = (z_const unsigned char *)hello;
    c_stream.next_out = compr;
    c_stream.avail_in = 3;
    c_stream.avail_out = (uInt)*comprLen;
    err = deflate(&c_stream, Z_FULL_FLUSH);
    CHECK_ERR(err, "deflate");

    compr[3]++; /* force an error in first compressed block */
    c_stream.avail_in = len - 3;

    err = deflate(&c_stream, Z_FINISH);
    if (err != Z_STREAM_END) {
        CHECK_ERR(err, "deflate");
    }
    err = deflateEnd(&c_stream);
    CHECK_ERR(err, "deflateEnd");

    *comprLen = c_stream.total_out;
}

/* ===========================================================================
 * Test inflateSync()
 */
static void test_sync(Byte *compr, uLong comprLen, Byte *uncompr,
                      uLong uncomprLen) {
    int err;
    z_stream d_stream; /* decompression stream */

    strcpy((char*)uncompr, "garbage");

    d_stream.zalloc = zalloc;
    d_stream.zfree = zfree;
    d_stream.opaque = (voidpf)0;

    d_stream.next_in  = compr;
    d_stream.avail_in = 2; /* just read the zlib header */

    err = inflateInit(&d_stream);
    CHECK_ERR(err, "inflateInit");

    d_stream.next_out = uncompr;
    d_stream.avail_out = (uInt)uncomprLen;

    err = inflate(&d_stream, Z_NO_FLUSH);
    CHECK_ERR(err, "inflate");

    d_stream.avail_in = (uInt)comprLen-2;   /* read all compressed data */
    err = inflateSync(&d_stream);           /* but skip the damaged part */
    CHECK_ERR(err, "inflateSync");

    err = inflate(&d_stream, Z_FINISH);
    if (err != Z_STREAM_END) {
        fprintf(stderr, "inflate should report Z_STREAM_END\n");
        exit(1);
    }
    err = inflateEnd(&d_stream);
    CHECK_ERR(err, "inflateEnd");

    printf("after inflateSync(): hel%s\n", (char *)uncompr);
}

/* ===========================================================================
 * Test deflate() with preset dictionary
 */
static void test_dict_deflate(Byte *compr, uLong comprLen) {
    z_stream c_stream; /* compression stream */
    int err;

    c_stream.zalloc = zalloc;
    c_stream.zfree = zfree;
    c_stream.opaque = (voidpf)0;

    err = deflateInit(&c_stream, Z_BEST_COMPRESSION);
    CHECK_ERR(err, "deflateInit");

    err = deflateSetDictionary(&c_stream,
                (const Bytef*)dictionary, (int)sizeof(dictionary));
    CHECK_ERR(err, "deflateSetDictionary");

    dictId = c_stream.adler;
    c_stream.next_out = compr;
    c_stream.avail_out = (uInt)comprLen;

    c_stream.next_in = (z_const unsigned char *)hello;
    c_stream.avail_in = (uInt)strlen(hello)+1;

    err = deflate(&c_stream, Z_FINISH);
    if (err != Z_STREAM_END) {
        fprintf(stderr, "deflate should report Z_STREAM_END\n");
        exit(1);
    }
    err = deflateEnd(&c_stream);
    CHECK_ERR(err, "deflateEnd");
}

/* ===========================================================================
 * Test inflate() with a preset dictionary
 */
static void test_dict_inflate(Byte *compr, uLong comprLen, Byte *uncompr,
                       uLong uncomprLen) {
    int err;
    z_stream d_stream; /* decompression stream */

    strcpy((char*)uncompr, "garbage");

    d_stream.zalloc = zalloc;
    d_stream.zfree = zfree;
    d_stream.opaque = (voidpf)0;

    d_stream.next_in  = compr;
    d_stream.avail_in = (uInt)comprLen;

    err = inflateInit(&d_stream);
    CHECK_ERR(err, "inflateInit");

    d_stream.next_out = uncompr;
    d_stream.avail_out = (uInt)uncomprLen;

    for (;;) {
        err = inflate(&d_stream, Z_NO_FLUSH);
        if (err == Z_STREAM_END) break;
        if (err == Z_NEED_DICT) {
            if (d_stream.adler != dictId) {
                fprintf(stderr, "unexpected dictionary");
                exit(1);
            }
            err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary,
                                       (int)sizeof(dictionary));
        }
        CHECK_ERR(err, "inflate with dict");
    }

    err = inflateEnd(&d_stream);
    CHECK_ERR(err, "inflateEnd");

    if (strcmp((char*)uncompr, hello)) {
        fprintf(stderr, "bad inflate with dict\n");
        exit(1);
    } else {
        printf("inflate with dictionary: %s\n", (char *)uncompr);
    }
}

/* ===========================================================================
 * Usage:  example [output.gz  [input.gz]]
 */

int main(int argc, char *argv[]) {
    Byte *compr, *uncompr;
    uLong uncomprLen = 20000;
    uLong comprLen = 3 * uncomprLen;
    static const char* myVersion = ZLIB_VERSION;

    if (zlibVersion()[0] != myVersion[0]) {
        fprintf(stderr, "incompatible zlib version\n");
        exit(1);

    } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) {
        fprintf(stderr, "warning: different zlib version linked: %s\n",
                zlibVersion());
    }

    printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n",
            ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags());

    compr    = (Byte*)calloc((uInt)comprLen, 1);
    uncompr  = (Byte*)calloc((uInt)uncomprLen, 1);
    /* compr and uncompr are cleared to avoid reading uninitialized
     * data and to ensure that uncompr compresses well.
     */
    if (compr == Z_NULL || uncompr == Z_NULL) {
        printf("out of memory\n");
        exit(1);
    }

#ifdef Z_SOLO
    (void)argc;
    (void)argv;
#else
    test_compress(compr, comprLen, uncompr, uncomprLen);

    test_gzio((argc > 1 ? argv[1] : TESTFILE),
              uncompr, uncomprLen);
#endif

    test_deflate(compr, comprLen);
    test_inflate(compr, comprLen, uncompr, uncomprLen);

    test_large_deflate(compr, comprLen, uncompr, uncomprLen);
    test_large_inflate(compr, comprLen, uncompr, uncomprLen);

    test_flush(compr, &comprLen);
    test_sync(compr, comprLen, uncompr, uncomprLen);
    comprLen = 3 * uncomprLen;

    test_dict_deflate(compr, comprLen);
    test_dict_inflate(compr, comprLen, uncompr, uncomprLen);

    free(compr);
    free(uncompr);

    return 0;
}
Added compat/zlib/test/infcover.c.
































































































































































































































































































































































































































































































































































































































































































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/* infcover.c -- test zlib's inflate routines with full code coverage
 * Copyright (C) 2011, 2016 Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* to use, do: ./configure --cover && make cover */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "zlib.h"

/* get definition of internal structure so we can mess with it (see pull()),
   and so we can call inflate_trees() (see cover5()) */
#define ZLIB_INTERNAL
#include "inftrees.h"
#include "inflate.h"

#define local static

/* -- memory tracking routines -- */

/*
   These memory tracking routines are provided to zlib and track all of zlib's
   allocations and deallocations, check for LIFO operations, keep a current
   and high water mark of total bytes requested, optionally set a limit on the
   total memory that can be allocated, and when done check for memory leaks.

   They are used as follows:

   z_stream strm;
   mem_setup(&strm)         initializes the memory tracking and sets the
                            zalloc, zfree, and opaque members of strm to use
                            memory tracking for all zlib operations on strm
   mem_limit(&strm, limit)  sets a limit on the total bytes requested -- a
                            request that exceeds this limit will result in an
                            allocation failure (returns NULL) -- setting the
                            limit to zero means no limit, which is the default
                            after mem_setup()
   mem_used(&strm, "msg")   prints to stderr "msg" and the total bytes used
   mem_high(&strm, "msg")   prints to stderr "msg" and the high water mark
   mem_done(&strm, "msg")   ends memory tracking, releases all allocations
                            for the tracking as well as leaked zlib blocks, if
                            any.  If there was anything unusual, such as leaked
                            blocks, non-FIFO frees, or frees of addresses not
                            allocated, then "msg" and information about the
                            problem is printed to stderr.  If everything is
                            normal, nothing is printed. mem_done resets the
                            strm members to Z_NULL to use the default memory
                            allocation routines on the next zlib initialization
                            using strm.
 */

/* these items are strung together in a linked list, one for each allocation */
struct mem_item {
    void *ptr;                  /* pointer to allocated memory */
    size_t size;                /* requested size of allocation */
    struct mem_item *next;      /* pointer to next item in list, or NULL */
};

/* this structure is at the root of the linked list, and tracks statistics */
struct mem_zone {
    struct mem_item *first;     /* pointer to first item in list, or NULL */
    size_t total, highwater;    /* total allocations, and largest total */
    size_t limit;               /* memory allocation limit, or 0 if no limit */
    int notlifo, rogue;         /* counts of non-LIFO frees and rogue frees */
};

/* memory allocation routine to pass to zlib */
local void *mem_alloc(void *mem, unsigned count, unsigned size)
{
    void *ptr;
    struct mem_item *item;
    struct mem_zone *zone = mem;
    size_t len = count * (size_t)size;

    /* induced allocation failure */
    if (zone == NULL || (zone->limit && zone->total + len > zone->limit))
        return NULL;

    /* perform allocation using the standard library, fill memory with a
       non-zero value to make sure that the code isn't depending on zeros */
    ptr = malloc(len);
    if (ptr == NULL)
        return NULL;
    memset(ptr, 0xa5, len);

    /* create a new item for the list */
    item = malloc(sizeof(struct mem_item));
    if (item == NULL) {
        free(ptr);
        return NULL;
    }
    item->ptr = ptr;
    item->size = len;

    /* insert item at the beginning of the list */
    item->next = zone->first;
    zone->first = item;

    /* update the statistics */
    zone->total += item->size;
    if (zone->total > zone->highwater)
        zone->highwater = zone->total;

    /* return the allocated memory */
    return ptr;
}

/* memory free routine to pass to zlib */
local void mem_free(void *mem, void *ptr)
{
    struct mem_item *item, *next;
    struct mem_zone *zone = mem;

    /* if no zone, just do a free */
    if (zone == NULL) {
        free(ptr);
        return;
    }

    /* point next to the item that matches ptr, or NULL if not found -- remove
       the item from the linked list if found */
    next = zone->first;
    if (next) {
        if (next->ptr == ptr)
            zone->first = next->next;   /* first one is it, remove from list */
        else {
            do {                        /* search the linked list */
                item = next;
                next = item->next;
            } while (next != NULL && next->ptr != ptr);
            if (next) {                 /* if found, remove from linked list */
                item->next = next->next;
                zone->notlifo++;        /* not a LIFO free */
            }

        }
    }

    /* if found, update the statistics and free the item */
    if (next) {
        zone->total -= next->size;
        free(next);
    }

    /* if not found, update the rogue count */
    else
        zone->rogue++;

    /* in any case, do the requested free with the standard library function */
    free(ptr);
}

/* set up a controlled memory allocation space for monitoring, set the stream
   parameters to the controlled routines, with opaque pointing to the space */
local void mem_setup(z_stream *strm)
{
    struct mem_zone *zone;

    zone = malloc(sizeof(struct mem_zone));
    assert(zone != NULL);
    zone->first = NULL;
    zone->total = 0;
    zone->highwater = 0;
    zone->limit = 0;
    zone->notlifo = 0;
    zone->rogue = 0;
    strm->opaque = zone;
    strm->zalloc = mem_alloc;
    strm->zfree = mem_free;
}

/* set a limit on the total memory allocation, or 0 to remove the limit */
local void mem_limit(z_stream *strm, size_t limit)
{
    struct mem_zone *zone = strm->opaque;

    zone->limit = limit;
}

/* show the current total requested allocations in bytes */
local void mem_used(z_stream *strm, char *prefix)
{
    struct mem_zone *zone = strm->opaque;

    fprintf(stderr, "%s: %lu allocated\n", prefix, zone->total);
}

/* show the high water allocation in bytes */
local void mem_high(z_stream *strm, char *prefix)
{
    struct mem_zone *zone = strm->opaque;

    fprintf(stderr, "%s: %lu high water mark\n", prefix, zone->highwater);
}

/* release the memory allocation zone -- if there are any surprises, notify */
local void mem_done(z_stream *strm, char *prefix)
{
    int count = 0;
    struct mem_item *item, *next;
    struct mem_zone *zone = strm->opaque;

    /* show high water mark */
    mem_high(strm, prefix);

    /* free leftover allocations and item structures, if any */
    item = zone->first;
    while (item != NULL) {
        free(item->ptr);
        next = item->next;
        free(item);
        item = next;
        count++;
    }

    /* issue alerts about anything unexpected */
    if (count || zone->total)
        fprintf(stderr, "** %s: %lu bytes in %d blocks not freed\n",
                prefix, zone->total, count);
    if (zone->notlifo)
        fprintf(stderr, "** %s: %d frees not LIFO\n", prefix, zone->notlifo);
    if (zone->rogue)
        fprintf(stderr, "** %s: %d frees not recognized\n",
                prefix, zone->rogue);

    /* free the zone and delete from the stream */
    free(zone);
    strm->opaque = Z_NULL;
    strm->zalloc = Z_NULL;
    strm->zfree = Z_NULL;
}

/* -- inflate test routines -- */

/* Decode a hexadecimal string, set *len to length, in[] to the bytes.  This
   decodes liberally, in that hex digits can be adjacent, in which case two in
   a row writes a byte.  Or they can be delimited by any non-hex character,
   where the delimiters are ignored except when a single hex digit is followed
   by a delimiter, where that single digit writes a byte.  The returned data is
   allocated and must eventually be freed.  NULL is returned if out of memory.
   If the length is not needed, then len can be NULL. */
local unsigned char *h2b(const char *hex, unsigned *len)
{
    unsigned char *in, *re;
    unsigned next, val;

    in = malloc((strlen(hex) + 1) >> 1);
    if (in == NULL)
        return NULL;
    next = 0;
    val = 1;
    do {
        if (*hex >= '0' && *hex <= '9')
            val = (val << 4) + *hex - '0';
        else if (*hex >= 'A' && *hex <= 'F')
            val = (val << 4) + *hex - 'A' + 10;
        else if (*hex >= 'a' && *hex <= 'f')
            val = (val << 4) + *hex - 'a' + 10;
        else if (val != 1 && val < 32)  /* one digit followed by delimiter */
            val += 240;                 /* make it look like two digits */
        if (val > 255) {                /* have two digits */
            in[next++] = val & 0xff;    /* save the decoded byte */
            val = 1;                    /* start over */
        }
    } while (*hex++);       /* go through the loop with the terminating null */
    if (len != NULL)
        *len = next;
    re = realloc(in, next);
    return re == NULL ? in : re;
}

/* generic inflate() run, where hex is the hexadecimal input data, what is the
   text to include in an error message, step is how much input data to feed
   inflate() on each call, or zero to feed it all, win is the window bits
   parameter to inflateInit2(), len is the size of the output buffer, and err
   is the error code expected from the first inflate() call (the second
   inflate() call is expected to return Z_STREAM_END).  If win is 47, then
   header information is collected with inflateGetHeader().  If a zlib stream
   is looking for a dictionary, then an empty dictionary is provided.
   inflate() is run until all of the input data is consumed. */
local void inf(char *hex, char *what, unsigned step, int win, unsigned len,
               int err)
{
    int ret;
    unsigned have;
    unsigned char *in, *out;
    z_stream strm, copy;
    gz_header head;

    mem_setup(&strm);
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit2(&strm, win);
    if (ret != Z_OK) {
        mem_done(&strm, what);
        return;
    }
    out = malloc(len);                          assert(out != NULL);
    if (win == 47) {
        head.extra = out;
        head.extra_max = len;
        head.name = out;
        head.name_max = len;
        head.comment = out;
        head.comm_max = len;
        ret = inflateGetHeader(&strm, &head);   assert(ret == Z_OK);
    }
    in = h2b(hex, &have);                       assert(in != NULL);
    if (step == 0 || step > have)
        step = have;
    strm.avail_in = step;
    have -= step;
    strm.next_in = in;
    do {
        strm.avail_out = len;
        strm.next_out = out;
        ret = inflate(&strm, Z_NO_FLUSH);       assert(err == 9 || ret == err);
        if (ret != Z_OK && ret != Z_BUF_ERROR && ret != Z_NEED_DICT)
            break;
        if (ret == Z_NEED_DICT) {
            ret = inflateSetDictionary(&strm, in, 1);
                                                assert(ret == Z_DATA_ERROR);
            mem_limit(&strm, 1);
            ret = inflateSetDictionary(&strm, out, 0);
                                                assert(ret == Z_MEM_ERROR);
            mem_limit(&strm, 0);
            ((struct inflate_state *)strm.state)->mode = DICT;
            ret = inflateSetDictionary(&strm, out, 0);
                                                assert(ret == Z_OK);
            ret = inflate(&strm, Z_NO_FLUSH);   assert(ret == Z_BUF_ERROR);
        }
        ret = inflateCopy(&copy, &strm);        assert(ret == Z_OK);
        ret = inflateEnd(&copy);                assert(ret == Z_OK);
        err = 9;                        /* don't care next time around */
        have += strm.avail_in;
        strm.avail_in = step > have ? have : step;
        have -= strm.avail_in;
    } while (strm.avail_in);
    free(in);
    free(out);
    ret = inflateReset2(&strm, -8);             assert(ret == Z_OK);
    ret = inflateEnd(&strm);                    assert(ret == Z_OK);
    mem_done(&strm, what);
}

/* cover all of the lines in inflate.c up to inflate() */
local void cover_support(void)
{
    int ret;
    z_stream strm;

    mem_setup(&strm);
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit(&strm);                   assert(ret == Z_OK);
    mem_used(&strm, "inflate init");
    ret = inflatePrime(&strm, 5, 31);           assert(ret == Z_OK);
    ret = inflatePrime(&strm, -1, 0);           assert(ret == Z_OK);
    ret = inflateSetDictionary(&strm, Z_NULL, 0);
                                                assert(ret == Z_STREAM_ERROR);
    ret = inflateEnd(&strm);                    assert(ret == Z_OK);
    mem_done(&strm, "prime");

    inf("63 0", "force window allocation", 0, -15, 1, Z_OK);
    inf("63 18 5", "force window replacement", 0, -8, 259, Z_OK);
    inf("63 18 68 30 d0 0 0", "force split window update", 4, -8, 259, Z_OK);
    inf("3 0", "use fixed blocks", 0, -15, 1, Z_STREAM_END);
    inf("", "bad window size", 0, 1, 0, Z_STREAM_ERROR);

    mem_setup(&strm);
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit_(&strm, "!", (int)sizeof(z_stream));
                                                assert(ret == Z_VERSION_ERROR);
    mem_done(&strm, "wrong version");

    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit(&strm);                   assert(ret == Z_OK);
    ret = inflateEnd(&strm);                    assert(ret == Z_OK);
    fputs("inflate built-in memory routines\n", stderr);
}

/* cover all inflate() header and trailer cases and code after inflate() */
local void cover_wrap(void)
{
    int ret;
    z_stream strm, copy;
    unsigned char dict[257];

    ret = inflate(Z_NULL, 0);                   assert(ret == Z_STREAM_ERROR);
    ret = inflateEnd(Z_NULL);                   assert(ret == Z_STREAM_ERROR);
    ret = inflateCopy(Z_NULL, Z_NULL);          assert(ret == Z_STREAM_ERROR);
    fputs("inflate bad parameters\n", stderr);

    inf("1f 8b 0 0", "bad gzip method", 0, 31, 0, Z_DATA_ERROR);
    inf("1f 8b 8 80", "bad gzip flags", 0, 31, 0, Z_DATA_ERROR);
    inf("77 85", "bad zlib method", 0, 15, 0, Z_DATA_ERROR);
    inf("8 99", "set window size from header", 0, 0, 0, Z_OK);
    inf("78 9c", "bad zlib window size", 0, 8, 0, Z_DATA_ERROR);
    inf("78 9c 63 0 0 0 1 0 1", "check adler32", 0, 15, 1, Z_STREAM_END);
    inf("1f 8b 8 1e 0 0 0 0 0 0 1 0 0 0 0 0 0", "bad header crc", 0, 47, 1,
        Z_DATA_ERROR);
    inf("1f 8b 8 2 0 0 0 0 0 0 1d 26 3 0 0 0 0 0 0 0 0 0", "check gzip length",
        0, 47, 0, Z_STREAM_END);
    inf("78 90", "bad zlib header check", 0, 47, 0, Z_DATA_ERROR);
    inf("8 b8 0 0 0 1", "need dictionary", 0, 8, 0, Z_NEED_DICT);
    inf("78 9c 63 0", "compute adler32", 0, 15, 1, Z_OK);

    mem_setup(&strm);
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit2(&strm, -8);
    strm.avail_in = 2;
    strm.next_in = (void *)"\x63";
    strm.avail_out = 1;
    strm.next_out = (void *)&ret;
    mem_limit(&strm, 1);
    ret = inflate(&strm, Z_NO_FLUSH);           assert(ret == Z_MEM_ERROR);
    ret = inflate(&strm, Z_NO_FLUSH);           assert(ret == Z_MEM_ERROR);
    mem_limit(&strm, 0);
    memset(dict, 0, 257);
    ret = inflateSetDictionary(&strm, dict, 257);
                                                assert(ret == Z_OK);
    mem_limit(&strm, (sizeof(struct inflate_state) << 1) + 256);
    ret = inflatePrime(&strm, 16, 0);           assert(ret == Z_OK);
    strm.avail_in = 2;
    strm.next_in = (void *)"\x80";
    ret = inflateSync(&strm);                   assert(ret == Z_DATA_ERROR);
    ret = inflate(&strm, Z_NO_FLUSH);           assert(ret == Z_STREAM_ERROR);
    strm.avail_in = 4;
    strm.next_in = (void *)"\0\0\xff\xff";
    ret = inflateSync(&strm);                   assert(ret == Z_OK);
    (void)inflateSyncPoint(&strm);
    ret = inflateCopy(&copy, &strm);            assert(ret == Z_MEM_ERROR);
    mem_limit(&strm, 0);
    ret = inflateUndermine(&strm, 1);           assert(ret == Z_DATA_ERROR);
    (void)inflateMark(&strm);
    ret = inflateEnd(&strm);                    assert(ret == Z_OK);
    mem_done(&strm, "miscellaneous, force memory errors");
}

/* input and output functions for inflateBack() */
local unsigned pull(void *desc, unsigned char **buf)
{
    static unsigned int next = 0;
    static unsigned char dat[] = {0x63, 0, 2, 0};
    struct inflate_state *state;

    if (desc == Z_NULL) {
        next = 0;
        return 0;   /* no input (already provided at next_in) */
    }
    state = (void *)((z_stream *)desc)->state;
    if (state != Z_NULL)
        state->mode = SYNC;     /* force an otherwise impossible situation */
    return next < sizeof(dat) ? (*buf = dat + next++, 1) : 0;
}

local int push(void *desc, unsigned char *buf, unsigned len)
{
    (void)buf;
    (void)len;
    return desc != Z_NULL;      /* force error if desc not null */
}

/* cover inflateBack() up to common deflate data cases and after those */
local void cover_back(void)
{
    int ret;
    z_stream strm;
    unsigned char win[32768];

    ret = inflateBackInit_(Z_NULL, 0, win, 0, 0);
                                                assert(ret == Z_VERSION_ERROR);
    ret = inflateBackInit(Z_NULL, 0, win);      assert(ret == Z_STREAM_ERROR);
    ret = inflateBack(Z_NULL, Z_NULL, Z_NULL, Z_NULL, Z_NULL);
                                                assert(ret == Z_STREAM_ERROR);
    ret = inflateBackEnd(Z_NULL);               assert(ret == Z_STREAM_ERROR);
    fputs("inflateBack bad parameters\n", stderr);

    mem_setup(&strm);
    ret = inflateBackInit(&strm, 15, win);      assert(ret == Z_OK);
    strm.avail_in = 2;
    strm.next_in = (void *)"\x03";
    ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL);
                                                assert(ret == Z_STREAM_END);
        /* force output error */
    strm.avail_in = 3;
    strm.next_in = (void *)"\x63\x00";
    ret = inflateBack(&strm, pull, Z_NULL, push, &strm);
                                                assert(ret == Z_BUF_ERROR);
        /* force mode error by mucking with state */
    ret = inflateBack(&strm, pull, &strm, push, Z_NULL);
                                                assert(ret == Z_STREAM_ERROR);
    ret = inflateBackEnd(&strm);                assert(ret == Z_OK);
    mem_done(&strm, "inflateBack bad state");

    ret = inflateBackInit(&strm, 15, win);      assert(ret == Z_OK);
    ret = inflateBackEnd(&strm);                assert(ret == Z_OK);
    fputs("inflateBack built-in memory routines\n", stderr);
}

/* do a raw inflate of data in hexadecimal with both inflate and inflateBack */
local int try(char *hex, char *id, int err)
{
    int ret;
    unsigned len, size;
    unsigned char *in, *out, *win;
    char *prefix;
    z_stream strm;

    /* convert to hex */
    in = h2b(hex, &len);
    assert(in != NULL);

    /* allocate work areas */
    size = len << 3;
    out = malloc(size);
    assert(out != NULL);
    win = malloc(32768);
    assert(win != NULL);
    prefix = malloc(strlen(id) + 6);
    assert(prefix != NULL);

    /* first with inflate */
    strcpy(prefix, id);
    strcat(prefix, "-late");
    mem_setup(&strm);
    strm.avail_in = 0;
    strm.next_in = Z_NULL;
    ret = inflateInit2(&strm, err < 0 ? 47 : -15);
    assert(ret == Z_OK);
    strm.avail_in = len;
    strm.next_in = in;
    do {
        strm.avail_out = size;
        strm.next_out = out;
        ret = inflate(&strm, Z_TREES);
        assert(ret != Z_STREAM_ERROR && ret != Z_MEM_ERROR);
        if (ret == Z_DATA_ERROR || ret == Z_NEED_DICT)
            break;
    } while (strm.avail_in || strm.avail_out == 0);
    if (err) {
        assert(ret == Z_DATA_ERROR);
        assert(strcmp(id, strm.msg) == 0);
    }
    inflateEnd(&strm);
    mem_done(&strm, prefix);

    /* then with inflateBack */
    if (err >= 0) {
        strcpy(prefix, id);
        strcat(prefix, "-back");
        mem_setup(&strm);
        ret = inflateBackInit(&strm, 15, win);
        assert(ret == Z_OK);
        strm.avail_in = len;
        strm.next_in = in;
        ret = inflateBack(&strm, pull, Z_NULL, push, Z_NULL);
        assert(ret != Z_STREAM_ERROR);
        if (err) {
            assert(ret == Z_DATA_ERROR);
            assert(strcmp(id, strm.msg) == 0);
        }
        inflateBackEnd(&strm);
        mem_done(&strm, prefix);
    }

    /* clean up */
    free(prefix);
    free(win);
    free(out);
    free(in);
    return ret;
}

/* cover deflate data cases in both inflate() and inflateBack() */
local void cover_inflate(void)
{
    try("0 0 0 0 0", "invalid stored block lengths", 1);
    try("3 0", "fixed", 0);
    try("6", "invalid block type", 1);
    try("1 1 0 fe ff 0", "stored", 0);
    try("fc 0 0", "too many length or distance symbols", 1);
    try("4 0 fe ff", "invalid code lengths set", 1);
    try("4 0 24 49 0", "invalid bit length repeat", 1);
    try("4 0 24 e9 ff ff", "invalid bit length repeat", 1);
    try("4 0 24 e9 ff 6d", "invalid code -- missing end-of-block", 1);
    try("4 80 49 92 24 49 92 24 71 ff ff 93 11 0",
        "invalid literal/lengths set", 1);
    try("4 80 49 92 24 49 92 24 f b4 ff ff c3 84", "invalid distances set", 1);
    try("4 c0 81 8 0 0 0 0 20 7f eb b 0 0", "invalid literal/length code", 1);
    try("2 7e ff ff", "invalid distance code", 1);
    try("c c0 81 0 0 0 0 0 90 ff 6b 4 0", "invalid distance too far back", 1);

    /* also trailer mismatch just in inflate() */
    try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 1", "incorrect data check", -1);
    try("1f 8b 8 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 1",
        "incorrect length check", -1);
    try("5 c0 21 d 0 0 0 80 b0 fe 6d 2f 91 6c", "pull 17", 0);
    try("5 e0 81 91 24 cb b2 2c 49 e2 f 2e 8b 9a 47 56 9f fb fe ec d2 ff 1f",
        "long code", 0);
    try("ed c0 1 1 0 0 0 40 20 ff 57 1b 42 2c 4f", "length extra", 0);
    try("ed cf c1 b1 2c 47 10 c4 30 fa 6f 35 1d 1 82 59 3d fb be 2e 2a fc f c",
        "long distance and extra", 0);
    try("ed c0 81 0 0 0 0 80 a0 fd a9 17 a9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 "
        "0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6", "window end", 0);
    inf("2 8 20 80 0 3 0", "inflate_fast TYPE return", 0, -15, 258,
        Z_STREAM_END);
    inf("63 18 5 40 c 0", "window wrap", 3, -8, 300, Z_OK);
}

/* cover remaining lines in inftrees.c */
local void cover_trees(void)
{
    int ret;
    unsigned bits;
    unsigned short lens[16], work[16];
    code *next, table[ENOUGH_DISTS];

    /* we need to call inflate_table() directly in order to manifest not-
       enough errors, since zlib insures that enough is always enough */
    for (bits = 0; bits < 15; bits++)
        lens[bits] = (unsigned short)(bits + 1);
    lens[15] = 15;
    next = table;
    bits = 15;
    ret = inflate_table(DISTS, lens, 16, &next, &bits, work);
                                                assert(ret == 1);
    next = table;
    bits = 1;
    ret = inflate_table(DISTS, lens, 16, &next, &bits, work);
                                                assert(ret == 1);
    fputs("inflate_table not enough errors\n", stderr);
}

/* cover remaining inffast.c decoding and window copying */
local void cover_fast(void)
{
    inf("e5 e0 81 ad 6d cb b2 2c c9 01 1e 59 63 ae 7d ee fb 4d fd b5 35 41 68"
        " ff 7f 0f 0 0 0", "fast length extra bits", 0, -8, 258, Z_DATA_ERROR);
    inf("25 fd 81 b5 6d 59 b6 6a 49 ea af 35 6 34 eb 8c b9 f6 b9 1e ef 67 49"
        " 50 fe ff ff 3f 0 0", "fast distance extra bits", 0, -8, 258,
        Z_DATA_ERROR);
    inf("3 7e 0 0 0 0 0", "fast invalid distance code", 0, -8, 258,
        Z_DATA_ERROR);
    inf("1b 7 0 0 0 0 0", "fast invalid literal/length code", 0, -8, 258,
        Z_DATA_ERROR);
    inf("d c7 1 ae eb 38 c 4 41 a0 87 72 de df fb 1f b8 36 b1 38 5d ff ff 0",
        "fast 2nd level codes and too far back", 0, -8, 258, Z_DATA_ERROR);
    inf("63 18 5 8c 10 8 0 0 0 0", "very common case", 0, -8, 259, Z_OK);
    inf("63 60 60 18 c9 0 8 18 18 18 26 c0 28 0 29 0 0 0",
        "contiguous and wrap around window", 6, -8, 259, Z_OK);
    inf("63 0 3 0 0 0 0 0", "copy direct from output", 0, -8, 259,
        Z_STREAM_END);
}

int main(void)
{
    fprintf(stderr, "%s\n", zlibVersion());
    cover_support();
    cover_wrap();
    cover_back();
    cover_inflate();
    cover_trees();
    cover_fast();
    return 0;
}
Added compat/zlib/test/minigzip.c.



































































































































































































































































































































































































































































































































































































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/* minigzip.c -- simulate gzip using the zlib compression library
 * Copyright (C) 1995-2006, 2010, 2011, 2016 Jean-loup Gailly
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/*
 * minigzip is a minimal implementation of the gzip utility. This is
 * only an example of using zlib and isn't meant to replace the
 * full-featured gzip. No attempt is made to deal with file systems
 * limiting names to 14 or 8+3 characters, etc... Error checking is
 * very limited. So use minigzip only for testing; use gzip for the
 * real thing. On MSDOS, use only on file names without extension
 * or in pipe mode.
 */

/* @(#) $Id$ */

#include "zlib.h"
#include <stdio.h>

#ifdef STDC
#  include <string.h>
#  include <stdlib.h>
#endif

#ifdef USE_MMAP
#  include <sys/types.h>
#  include <sys/mman.h>
#  include <sys/stat.h>
#endif

#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
#  include <fcntl.h>
#  include <io.h>
#  ifdef UNDER_CE
#    include <stdlib.h>
#  endif
#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
#else
#  define SET_BINARY_MODE(file)
#endif

#if defined(_MSC_VER) && _MSC_VER < 1900
#  define snprintf _snprintf
#endif

#ifdef VMS
#  define unlink delete
#  define GZ_SUFFIX "-gz"
#endif
#ifdef RISCOS
#  define unlink remove
#  define GZ_SUFFIX "-gz"
#  define fileno(file) file->__file
#endif
#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
#  include <unix.h> /* for fileno */
#endif

#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE)
#ifndef WIN32 /* unlink already in stdio.h for WIN32 */
  extern int unlink(const char *);
#endif
#endif

#if defined(UNDER_CE)
#  include <windows.h>
#  define perror(s) pwinerror(s)

/* Map the Windows error number in ERROR to a locale-dependent error
   message string and return a pointer to it.  Typically, the values
   for ERROR come from GetLastError.

   The string pointed to shall not be modified by the application,
   but may be overwritten by a subsequent call to strwinerror

   The strwinerror function does not change the current setting
   of GetLastError.  */

static char *strwinerror (error)
     DWORD error;
{
    static char buf[1024];

    wchar_t *msgbuf;
    DWORD lasterr = GetLastError();
    DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
        NULL,
        error,
        0, /* Default language */
        (LPVOID)&msgbuf,
        0,
        NULL);
    if (chars != 0) {
        /* If there is an \r\n appended, zap it.  */
        if (chars >= 2
            && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
            chars -= 2;
            msgbuf[chars] = 0;
        }

        if (chars > sizeof (buf) - 1) {
            chars = sizeof (buf) - 1;
            msgbuf[chars] = 0;
        }

        wcstombs(buf, msgbuf, chars + 1);
        LocalFree(msgbuf);
    }
    else {
        sprintf(buf, "unknown win32 error (%ld)", error);
    }

    SetLastError(lasterr);
    return buf;
}

static void pwinerror (s)
    const char *s;
{
    if (s && *s)
        fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ()));
    else
        fprintf(stderr, "%s\n", strwinerror(GetLastError ()));
}

#endif /* UNDER_CE */

#ifndef GZ_SUFFIX
#  define GZ_SUFFIX ".gz"
#endif
#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1)

#define BUFLEN      16384
#define MAX_NAME_LEN 1024

#ifdef MAXSEG_64K
#  define local static
   /* Needed for systems with limitation on stack size. */
#else
#  define local
#endif

#ifdef Z_SOLO
/* for Z_SOLO, create simplified gz* functions using deflate and inflate */

#if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE)
#  include <unistd.h>       /* for unlink() */
#endif

static void *myalloc(void *q, unsigned n, unsigned m) {
    (void)q;
    return calloc(n, m);
}

static void myfree(void *q, void *p) {
    (void)q;
    free(p);
}

typedef struct gzFile_s {
    FILE *file;
    int write;
    int err;
    char *msg;
    z_stream strm;
} *gzFile;

static gzFile gz_open(const char *path, int fd, const char *mode) {
    gzFile gz;
    int ret;

    gz = malloc(sizeof(struct gzFile_s));
    if (gz == NULL)
        return NULL;
    gz->write = strchr(mode, 'w') != NULL;
    gz->strm.zalloc = myalloc;
    gz->strm.zfree = myfree;
    gz->strm.opaque = Z_NULL;
    if (gz->write)
        ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0);
    else {
        gz->strm.next_in = 0;
        gz->strm.avail_in = Z_NULL;
        ret = inflateInit2(&(gz->strm), 15 + 16);
    }
    if (ret != Z_OK) {
        free(gz);
        return NULL;
    }
    gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") :
                              fopen(path, gz->write ? "wb" : "rb");
    if (gz->file == NULL) {
        gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm));
        free(gz);
        return NULL;
    }
    gz->err = 0;
    gz->msg = "";
    return gz;
}

static gzFile gzopen(const char *path, const char *mode) {
    return gz_open(path, -1, mode);
}

static gzFile gzdopen(int fd, const char *mode) {
    return gz_open(NULL, fd, mode);
}

static int gzwrite(gzFile gz, const void *buf, unsigned len) {
    z_stream *strm;
    unsigned char out[BUFLEN];

    if (gz == NULL || !gz->write)
        return 0;
    strm = &(gz->strm);
    strm->next_in = (void *)buf;
    strm->avail_in = len;
    do {
        strm->next_out = out;
        strm->avail_out = BUFLEN;
        (void)deflate(strm, Z_NO_FLUSH);
        fwrite(out, 1, BUFLEN - strm->avail_out, gz->file);
    } while (strm->avail_out == 0);
    return len;
}

static int gzread(gzFile gz, void *buf, unsigned len) {
    int ret;
    unsigned got;
    unsigned char in[1];
    z_stream *strm;

    if (gz == NULL || gz->write)
        return 0;
    if (gz->err)
        return 0;
    strm = &(gz->strm);
    strm->next_out = (void *)buf;
    strm->avail_out = len;
    do {
        got = fread(in, 1, 1, gz->file);
        if (got == 0)
            break;
        strm->next_in = in;
        strm->avail_in = 1;
        ret = inflate(strm, Z_NO_FLUSH);
        if (ret == Z_DATA_ERROR) {
            gz->err = Z_DATA_ERROR;
            gz->msg = strm->msg;
            return 0;
        }
        if (ret == Z_STREAM_END)
            inflateReset(strm);
    } while (strm->avail_out);
    return len - strm->avail_out;
}

static int gzclose(gzFile gz) {
    z_stream *strm;
    unsigned char out[BUFLEN];

    if (gz == NULL)
        return Z_STREAM_ERROR;
    strm = &(gz->strm);
    if (gz->write) {
        strm->next_in = Z_NULL;
        strm->avail_in = 0;
        do {
            strm->next_out = out;
            strm->avail_out = BUFLEN;
            (void)deflate(strm, Z_FINISH);
            fwrite(out, 1, BUFLEN - strm->avail_out, gz->file);
        } while (strm->avail_out == 0);
        deflateEnd(strm);
    }
    else
        inflateEnd(strm);
    fclose(gz->file);
    free(gz);
    return Z_OK;
}

static const char *gzerror(gzFile gz, int *err) {
    *err = gz->err;
    return gz->msg;
}

#endif

static char *prog;

/* ===========================================================================
 * Display error message and exit
 */
static void error(const char *msg) {
    fprintf(stderr, "%s: %s\n", prog, msg);
    exit(1);
}

#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */

/* Try compressing the input file at once using mmap. Return Z_OK if
 * success, Z_ERRNO otherwise.
 */
static int gz_compress_mmap(FILE *in, gzFile out) {
    int len;
    int err;
    int ifd = fileno(in);
    caddr_t buf;    /* mmap'ed buffer for the entire input file */
    off_t buf_len;  /* length of the input file */
    struct stat sb;

    /* Determine the size of the file, needed for mmap: */
    if (fstat(ifd, &sb) < 0) return Z_ERRNO;
    buf_len = sb.st_size;
    if (buf_len <= 0) return Z_ERRNO;

    /* Now do the actual mmap: */
    buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0);
    if (buf == (caddr_t)(-1)) return Z_ERRNO;

    /* Compress the whole file at once: */
    len = gzwrite(out, (char *)buf, (unsigned)buf_len);

    if (len != (int)buf_len) error(gzerror(out, &err));

    munmap(buf, buf_len);
    fclose(in);
    if (gzclose(out) != Z_OK) error("failed gzclose");
    return Z_OK;
}
#endif /* USE_MMAP */

/* ===========================================================================
 * Compress input to output then close both files.
 */

static void gz_compress(FILE *in, gzFile out) {
    local char buf[BUFLEN];
    int len;
    int err;

#ifdef USE_MMAP
    /* Try first compressing with mmap. If mmap fails (minigzip used in a
     * pipe), use the normal fread loop.
     */
    if (gz_compress_mmap(in, out) == Z_OK) return;
#endif
    for (;;) {
        len = (int)fread(buf, 1, sizeof(buf), in);
        if (ferror(in)) {
            perror("fread");
            exit(1);
        }
        if (len == 0) break;

        if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err));
    }
    fclose(in);
    if (gzclose(out) != Z_OK) error("failed gzclose");
}

/* ===========================================================================
 * Uncompress input to output then close both files.
 */
static void gz_uncompress(gzFile in, FILE *out) {
    local char buf[BUFLEN];
    int len;
    int err;

    for (;;) {
        len = gzread(in, buf, sizeof(buf));
        if (len < 0) error (gzerror(in, &err));
        if (len == 0) break;

        if ((int)fwrite(buf, 1, (unsigned)len, out) != len) {
            error("failed fwrite");
        }
    }
    if (fclose(out)) error("failed fclose");

    if (gzclose(in) != Z_OK) error("failed gzclose");
}


/* ===========================================================================
 * Compress the given file: create a corresponding .gz file and remove the
 * original.
 */
static void file_compress(char *file, char *mode) {
    local char outfile[MAX_NAME_LEN];
    FILE  *in;
    gzFile out;

    if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) {
        fprintf(stderr, "%s: filename too long\n", prog);
        exit(1);
    }

#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
    snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX);
#else
    strcpy(outfile, file);
    strcat(outfile, GZ_SUFFIX);
#endif

    in = fopen(file, "rb");
    if (in == NULL) {
        perror(file);
        exit(1);
    }
    out = gzopen(outfile, mode);
    if (out == NULL) {
        fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile);
        exit(1);
    }
    gz_compress(in, out);

    unlink(file);
}


/* ===========================================================================
 * Uncompress the given file and remove the original.
 */
static void file_uncompress(char *file) {
    local char buf[MAX_NAME_LEN];
    char *infile, *outfile;
    FILE  *out;
    gzFile in;
    z_size_t len = strlen(file);

    if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) {
        fprintf(stderr, "%s: filename too long\n", prog);
        exit(1);
    }

#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
    snprintf(buf, sizeof(buf), "%s", file);
#else
    strcpy(buf, file);
#endif

    if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) {
        infile = file;
        outfile = buf;
        outfile[len-3] = '\0';
    } else {
        outfile = file;
        infile = buf;
#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
        snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX);
#else
        strcat(infile, GZ_SUFFIX);
#endif
    }
    in = gzopen(infile, "rb");
    if (in == NULL) {
        fprintf(stderr, "%s: can't gzopen %s\n", prog, infile);
        exit(1);
    }
    out = fopen(outfile, "wb");
    if (out == NULL) {
        perror(file);
        exit(1);
    }

    gz_uncompress(in, out);

    unlink(infile);
}


/* ===========================================================================
 * Usage:  minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...]
 *   -c : write to standard output
 *   -d : decompress
 *   -f : compress with Z_FILTERED
 *   -h : compress with Z_HUFFMAN_ONLY
 *   -r : compress with Z_RLE
 *   -1 to -9 : compression level
 */

int main(int argc, char *argv[]) {
    int copyout = 0;
    int uncompr = 0;
    gzFile file;
    char *bname, outmode[20];

#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
    snprintf(outmode, sizeof(outmode), "%s", "wb6 ");
#else
    strcpy(outmode, "wb6 ");
#endif

    prog = argv[0];
    bname = strrchr(argv[0], '/');
    if (bname)
      bname++;
    else
      bname = argv[0];
    argc--, argv++;

    if (!strcmp(bname, "gunzip"))
      uncompr = 1;
    else if (!strcmp(bname, "zcat"))
      copyout = uncompr = 1;

    while (argc > 0) {
      if (strcmp(*argv, "-c") == 0)
        copyout = 1;
      else if (strcmp(*argv, "-d") == 0)
        uncompr = 1;
      else if (strcmp(*argv, "-f") == 0)
        outmode[3] = 'f';
      else if (strcmp(*argv, "-h") == 0)
        outmode[3] = 'h';
      else if (strcmp(*argv, "-r") == 0)
        outmode[3] = 'R';
      else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' &&
               (*argv)[2] == 0)
        outmode[2] = (*argv)[1];
      else
        break;
      argc--, argv++;
    }
    if (outmode[3] == ' ')
        outmode[3] = 0;
    if (argc == 0) {
        SET_BINARY_MODE(stdin);
        SET_BINARY_MODE(stdout);
        if (uncompr) {
            file = gzdopen(fileno(stdin), "rb");
            if (file == NULL) error("can't gzdopen stdin");
            gz_uncompress(file, stdout);
        } else {
            file = gzdopen(fileno(stdout), outmode);
            if (file == NULL) error("can't gzdopen stdout");
            gz_compress(stdin, file);
        }
    } else {
        if (copyout) {
            SET_BINARY_MODE(stdout);
        }
        do {
            if (uncompr) {
                if (copyout) {
                    file = gzopen(*argv, "rb");
                    if (file == NULL)
                        fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv);
                    else
                        gz_uncompress(file, stdout);
                } else {
                    file_uncompress(*argv);
                }
            } else {
                if (copyout) {
                    FILE * in = fopen(*argv, "rb");

                    if (in == NULL) {
                        perror(*argv);
                    } else {
                        file = gzdopen(fileno(stdout), outmode);
                        if (file == NULL) error("can't gzdopen stdout");

                        gz_compress(in, file);
                    }

                } else {
                    file_compress(*argv, outmode);
                }
            }
        } while (argv++, --argc);
    }
    return 0;
}
Added compat/zlib/treebuild.xml.




















































































































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<?xml version="1.0" ?>
<package name="zlib" version="1.3.1">
    <library name="zlib" dlversion="1.3.1" dlname="z">
	<property name="description"> zip compression library </property>
	<property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />

	<!-- fixme: not implemented yet -->
	<property name="compiler/c/inline" value="yes" />

	<include-file name="zlib.h" scope="public" mode="644" />
	<include-file name="zconf.h" scope="public" mode="644" />

	<source name="adler32.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	</source>
	<source name="compress.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	</source>
	<source name="crc32.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="crc32.h" />
	</source>
	<source name="gzclose.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="gzguts.h" />
	</source>
	<source name="gzlib.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="gzguts.h" />
	</source>
	<source name="gzread.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="gzguts.h" />
	</source>
	<source name="gzwrite.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="gzguts.h" />
	</source>
	<source name="uncompr.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	</source>
	<source name="deflate.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	    <depend name="deflate.h" />
	</source>
	<source name="trees.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	    <depend name="deflate.h" />
	    <depend name="trees.h" />
	</source>
	<source name="zutil.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	</source>
	<source name="inflate.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	    <depend name="inftrees.h" />
	    <depend name="inflate.h" />
	    <depend name="inffast.h" />
	</source>
	<source name="infback.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	    <depend name="inftrees.h" />
	    <depend name="inflate.h" />
	    <depend name="inffast.h" />
	</source>
	<source name="inftrees.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	    <depend name="inftrees.h" />
	</source>
	<source name="inffast.c">
	    <depend name="zlib.h" />
	    <depend name="zconf.h" />
	    <depend name="zutil.h" />
	    <depend name="inftrees.h" />
	    <depend name="inflate.h" />
	    <depend name="inffast.h" />
	</source>
    </library>
</package>

<!--
CFLAGS=-O
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-g -DZLIB_DEBUG
#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
#           -Wstrict-prototypes -Wmissing-prototypes

# OBJA =
# to use the asm code: make OBJA=match.o
#
match.o: match.S
	$(CPP) match.S > _match.s
	$(CC) -c _match.s
	mv _match.o match.o
	rm -f _match.s
-->
Added compat/zlib/trees.c.





























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* trees.c -- output deflated data using Huffman coding
 * Copyright (C) 1995-2024 Jean-loup Gailly
 * detect_data_type() function provided freely by Cosmin Truta, 2006
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/*
 *  ALGORITHM
 *
 *      The "deflation" process uses several Huffman trees. The more
 *      common source values are represented by shorter bit sequences.
 *
 *      Each code tree is stored in a compressed form which is itself
 * a Huffman encoding of the lengths of all the code strings (in
 * ascending order by source values).  The actual code strings are
 * reconstructed from the lengths in the inflate process, as described
 * in the deflate specification.
 *
 *  REFERENCES
 *
 *      Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
 *      Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
 *
 *      Storer, James A.
 *          Data Compression:  Methods and Theory, pp. 49-50.
 *          Computer Science Press, 1988.  ISBN 0-7167-8156-5.
 *
 *      Sedgewick, R.
 *          Algorithms, p290.
 *          Addison-Wesley, 1983. ISBN 0-201-06672-6.
 */

/* @(#) $Id$ */

/* #define GEN_TREES_H */

#include "deflate.h"

#ifdef ZLIB_DEBUG
#  include <ctype.h>
#endif

/* ===========================================================================
 * Constants
 */

#define MAX_BL_BITS 7
/* Bit length codes must not exceed MAX_BL_BITS bits */

#define END_BLOCK 256
/* end of block literal code */

#define REP_3_6      16
/* repeat previous bit length 3-6 times (2 bits of repeat count) */

#define REPZ_3_10    17
/* repeat a zero length 3-10 times  (3 bits of repeat count) */

#define REPZ_11_138  18
/* repeat a zero length 11-138 times  (7 bits of repeat count) */

local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
   = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};

local const int extra_dbits[D_CODES] /* extra bits for each distance code */
   = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};

local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
   = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};

local const uch bl_order[BL_CODES]
   = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
/* The lengths of the bit length codes are sent in order of decreasing
 * probability, to avoid transmitting the lengths for unused bit length codes.
 */

/* ===========================================================================
 * Local data. These are initialized only once.
 */

#define DIST_CODE_LEN  512 /* see definition of array dist_code below */

#if defined(GEN_TREES_H) || !defined(STDC)
/* non ANSI compilers may not accept trees.h */

local ct_data static_ltree[L_CODES+2];
/* The static literal tree. Since the bit lengths are imposed, there is no
 * need for the L_CODES extra codes used during heap construction. However
 * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
 * below).
 */

local ct_data static_dtree[D_CODES];
/* The static distance tree. (Actually a trivial tree since all codes use
 * 5 bits.)
 */

uch _dist_code[DIST_CODE_LEN];
/* Distance codes. The first 256 values correspond to the distances
 * 3 .. 258, the last 256 values correspond to the top 8 bits of
 * the 15 bit distances.
 */

uch _length_code[MAX_MATCH-MIN_MATCH+1];
/* length code for each normalized match length (0 == MIN_MATCH) */

local int base_length[LENGTH_CODES];
/* First normalized length for each code (0 = MIN_MATCH) */

local int base_dist[D_CODES];
/* First normalized distance for each code (0 = distance of 1) */

#else
#  include "trees.h"
#endif /* GEN_TREES_H */

struct static_tree_desc_s {
    const ct_data *static_tree;  /* static tree or NULL */
    const intf *extra_bits;      /* extra bits for each code or NULL */
    int     extra_base;          /* base index for extra_bits */
    int     elems;               /* max number of elements in the tree */
    int     max_length;          /* max bit length for the codes */
};

#ifdef NO_INIT_GLOBAL_POINTERS
#  define TCONST
#else
#  define TCONST const
#endif

local TCONST static_tree_desc static_l_desc =
{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};

local TCONST static_tree_desc static_d_desc =
{static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS};

local TCONST static_tree_desc static_bl_desc =
{(const ct_data *)0, extra_blbits, 0,   BL_CODES, MAX_BL_BITS};

/* ===========================================================================
 * Output a short LSB first on the stream.
 * IN assertion: there is enough room in pendingBuf.
 */
#define put_short(s, w) { \
    put_byte(s, (uch)((w) & 0xff)); \
    put_byte(s, (uch)((ush)(w) >> 8)); \
}

/* ===========================================================================
 * Reverse the first len bits of a code, using straightforward code (a faster
 * method would use a table)
 * IN assertion: 1 <= len <= 15
 */
local unsigned bi_reverse(unsigned code, int len) {
    register unsigned res = 0;
    do {
        res |= code & 1;
        code >>= 1, res <<= 1;
    } while (--len > 0);
    return res >> 1;
}

/* ===========================================================================
 * Flush the bit buffer, keeping at most 7 bits in it.
 */
local void bi_flush(deflate_state *s) {
    if (s->bi_valid == 16) {
        put_short(s, s->bi_buf);
        s->bi_buf = 0;
        s->bi_valid = 0;
    } else if (s->bi_valid >= 8) {
        put_byte(s, (Byte)s->bi_buf);
        s->bi_buf >>= 8;
        s->bi_valid -= 8;
    }
}

/* ===========================================================================
 * Flush the bit buffer and align the output on a byte boundary
 */
local void bi_windup(deflate_state *s) {
    if (s->bi_valid > 8) {
        put_short(s, s->bi_buf);
    } else if (s->bi_valid > 0) {
        put_byte(s, (Byte)s->bi_buf);
    }
    s->bi_buf = 0;
    s->bi_valid = 0;
#ifdef ZLIB_DEBUG
    s->bits_sent = (s->bits_sent + 7) & ~7;
#endif
}

/* ===========================================================================
 * Generate the codes for a given tree and bit counts (which need not be
 * optimal).
 * IN assertion: the array bl_count contains the bit length statistics for
 * the given tree and the field len is set for all tree elements.
 * OUT assertion: the field code is set for all tree elements of non
 *     zero code length.
 */
local void gen_codes(ct_data *tree, int max_code, ushf *bl_count) {
    ush next_code[MAX_BITS+1]; /* next code value for each bit length */
    unsigned code = 0;         /* running code value */
    int bits;                  /* bit index */
    int n;                     /* code index */

    /* The distribution counts are first used to generate the code values
     * without bit reversal.
     */
    for (bits = 1; bits <= MAX_BITS; bits++) {
        code = (code + bl_count[bits - 1]) << 1;
        next_code[bits] = (ush)code;
    }
    /* Check that the bit counts in bl_count are consistent. The last code
     * must be all ones.
     */
    Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
            "inconsistent bit counts");
    Tracev((stderr,"\ngen_codes: max_code %d ", max_code));

    for (n = 0;  n <= max_code; n++) {
        int len = tree[n].Len;
        if (len == 0) continue;
        /* Now reverse the bits */
        tree[n].Code = (ush)bi_reverse(next_code[len]++, len);

        Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
            n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
    }
}

#ifdef GEN_TREES_H
local void gen_trees_header(void);
#endif

#ifndef ZLIB_DEBUG
#  define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
   /* Send a code of the given tree. c and tree must not have side effects */

#else /* !ZLIB_DEBUG */
#  define send_code(s, c, tree) \
     { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
       send_bits(s, tree[c].Code, tree[c].Len); }
#endif

/* ===========================================================================
 * Send a value on a given number of bits.
 * IN assertion: length <= 16 and value fits in length bits.
 */
#ifdef ZLIB_DEBUG
local void send_bits(deflate_state *s, int value, int length) {
    Tracevv((stderr," l %2d v %4x ", length, value));
    Assert(length > 0 && length <= 15, "invalid length");
    s->bits_sent += (ulg)length;

    /* If not enough room in bi_buf, use (valid) bits from bi_buf and
     * (16 - bi_valid) bits from value, leaving (width - (16 - bi_valid))
     * unused bits in value.
     */
    if (s->bi_valid > (int)Buf_size - length) {
        s->bi_buf |= (ush)value << s->bi_valid;
        put_short(s, s->bi_buf);
        s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
        s->bi_valid += length - Buf_size;
    } else {
        s->bi_buf |= (ush)value << s->bi_valid;
        s->bi_valid += length;
    }
}
#else /* !ZLIB_DEBUG */

#define send_bits(s, value, length) \
{ int len = length;\
  if (s->bi_valid > (int)Buf_size - len) {\
    int val = (int)value;\
    s->bi_buf |= (ush)val << s->bi_valid;\
    put_short(s, s->bi_buf);\
    s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
    s->bi_valid += len - Buf_size;\
  } else {\
    s->bi_buf |= (ush)(value) << s->bi_valid;\
    s->bi_valid += len;\
  }\
}
#endif /* ZLIB_DEBUG */


/* the arguments must not have side effects */

/* ===========================================================================
 * Initialize the various 'constant' tables.
 */
local void tr_static_init(void) {
#if defined(GEN_TREES_H) || !defined(STDC)
    static int static_init_done = 0;
    int n;        /* iterates over tree elements */
    int bits;     /* bit counter */
    int length;   /* length value */
    int code;     /* code value */
    int dist;     /* distance index */
    ush bl_count[MAX_BITS+1];
    /* number of codes at each bit length for an optimal tree */

    if (static_init_done) return;

    /* For some embedded targets, global variables are not initialized: */
#ifdef NO_INIT_GLOBAL_POINTERS
    static_l_desc.static_tree = static_ltree;
    static_l_desc.extra_bits = extra_lbits;
    static_d_desc.static_tree = static_dtree;
    static_d_desc.extra_bits = extra_dbits;
    static_bl_desc.extra_bits = extra_blbits;
#endif

    /* Initialize the mapping length (0..255) -> length code (0..28) */
    length = 0;
    for (code = 0; code < LENGTH_CODES-1; code++) {
        base_length[code] = length;
        for (n = 0; n < (1 << extra_lbits[code]); n++) {
            _length_code[length++] = (uch)code;
        }
    }
    Assert (length == 256, "tr_static_init: length != 256");
    /* Note that the length 255 (match length 258) can be represented
     * in two different ways: code 284 + 5 bits or code 285, so we
     * overwrite length_code[255] to use the best encoding:
     */
    _length_code[length - 1] = (uch)code;

    /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
    dist = 0;
    for (code = 0 ; code < 16; code++) {
        base_dist[code] = dist;
        for (n = 0; n < (1 << extra_dbits[code]); n++) {
            _dist_code[dist++] = (uch)code;
        }
    }
    Assert (dist == 256, "tr_static_init: dist != 256");
    dist >>= 7; /* from now on, all distances are divided by 128 */
    for ( ; code < D_CODES; code++) {
        base_dist[code] = dist << 7;
        for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
            _dist_code[256 + dist++] = (uch)code;
        }
    }
    Assert (dist == 256, "tr_static_init: 256 + dist != 512");

    /* Construct the codes of the static literal tree */
    for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
    n = 0;
    while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
    while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
    while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
    while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
    /* Codes 286 and 287 do not exist, but we must include them in the
     * tree construction to get a canonical Huffman tree (longest code
     * all ones)
     */
    gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);

    /* The static distance tree is trivial: */
    for (n = 0; n < D_CODES; n++) {
        static_dtree[n].Len = 5;
        static_dtree[n].Code = bi_reverse((unsigned)n, 5);
    }
    static_init_done = 1;

#  ifdef GEN_TREES_H
    gen_trees_header();
#  endif
#endif /* defined(GEN_TREES_H) || !defined(STDC) */
}

/* ===========================================================================
 * Generate the file trees.h describing the static trees.
 */
#ifdef GEN_TREES_H
#  ifndef ZLIB_DEBUG
#    include <stdio.h>
#  endif

#  define SEPARATOR(i, last, width) \
      ((i) == (last)? "\n};\n\n" :    \
       ((i) % (width) == (width) - 1 ? ",\n" : ", "))

void gen_trees_header(void) {
    FILE *header = fopen("trees.h", "w");
    int i;

    Assert (header != NULL, "Can't open trees.h");
    fprintf(header,
            "/* header created automatically with -DGEN_TREES_H */\n\n");

    fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
    for (i = 0; i < L_CODES+2; i++) {
        fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
                static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
    }

    fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
    for (i = 0; i < D_CODES; i++) {
        fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
                static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
    }

    fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n");
    for (i = 0; i < DIST_CODE_LEN; i++) {
        fprintf(header, "%2u%s", _dist_code[i],
                SEPARATOR(i, DIST_CODE_LEN-1, 20));
    }

    fprintf(header,
        "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
    for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
        fprintf(header, "%2u%s", _length_code[i],
                SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
    }

    fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
    for (i = 0; i < LENGTH_CODES; i++) {
        fprintf(header, "%1u%s", base_length[i],
                SEPARATOR(i, LENGTH_CODES-1, 20));
    }

    fprintf(header, "local const int base_dist[D_CODES] = {\n");
    for (i = 0; i < D_CODES; i++) {
        fprintf(header, "%5u%s", base_dist[i],
                SEPARATOR(i, D_CODES-1, 10));
    }

    fclose(header);
}
#endif /* GEN_TREES_H */

/* ===========================================================================
 * Initialize a new block.
 */
local void init_block(deflate_state *s) {
    int n; /* iterates over tree elements */

    /* Initialize the trees. */
    for (n = 0; n < L_CODES;  n++) s->dyn_ltree[n].Freq = 0;
    for (n = 0; n < D_CODES;  n++) s->dyn_dtree[n].Freq = 0;
    for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;

    s->dyn_ltree[END_BLOCK].Freq = 1;
    s->opt_len = s->static_len = 0L;
    s->sym_next = s->matches = 0;
}

/* ===========================================================================
 * Initialize the tree data structures for a new zlib stream.
 */
void ZLIB_INTERNAL _tr_init(deflate_state *s) {
    tr_static_init();

    s->l_desc.dyn_tree = s->dyn_ltree;
    s->l_desc.stat_desc = &static_l_desc;

    s->d_desc.dyn_tree = s->dyn_dtree;
    s->d_desc.stat_desc = &static_d_desc;

    s->bl_desc.dyn_tree = s->bl_tree;
    s->bl_desc.stat_desc = &static_bl_desc;

    s->bi_buf = 0;
    s->bi_valid = 0;
#ifdef ZLIB_DEBUG
    s->compressed_len = 0L;
    s->bits_sent = 0L;
#endif

    /* Initialize the first block of the first file: */
    init_block(s);
}

#define SMALLEST 1
/* Index within the heap array of least frequent node in the Huffman tree */


/* ===========================================================================
 * Remove the smallest element from the heap and recreate the heap with
 * one less element. Updates heap and heap_len.
 */
#define pqremove(s, tree, top) \
{\
    top = s->heap[SMALLEST]; \
    s->heap[SMALLEST] = s->heap[s->heap_len--]; \
    pqdownheap(s, tree, SMALLEST); \
}

/* ===========================================================================
 * Compares to subtrees, using the tree depth as tie breaker when
 * the subtrees have equal frequency. This minimizes the worst case length.
 */
#define smaller(tree, n, m, depth) \
   (tree[n].Freq < tree[m].Freq || \
   (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))

/* ===========================================================================
 * Restore the heap property by moving down the tree starting at node k,
 * exchanging a node with the smallest of its two sons if necessary, stopping
 * when the heap property is re-established (each father smaller than its
 * two sons).
 */
local void pqdownheap(deflate_state *s, ct_data *tree, int k) {
    int v = s->heap[k];
    int j = k << 1;  /* left son of k */
    while (j <= s->heap_len) {
        /* Set j to the smallest of the two sons: */
        if (j < s->heap_len &&
            smaller(tree, s->heap[j + 1], s->heap[j], s->depth)) {
            j++;
        }
        /* Exit if v is smaller than both sons */
        if (smaller(tree, v, s->heap[j], s->depth)) break;

        /* Exchange v with the smallest son */
        s->heap[k] = s->heap[j];  k = j;

        /* And continue down the tree, setting j to the left son of k */
        j <<= 1;
    }
    s->heap[k] = v;
}

/* ===========================================================================
 * Compute the optimal bit lengths for a tree and update the total bit length
 * for the current block.
 * IN assertion: the fields freq and dad are set, heap[heap_max] and
 *    above are the tree nodes sorted by increasing frequency.
 * OUT assertions: the field len is set to the optimal bit length, the
 *     array bl_count contains the frequencies for each bit length.
 *     The length opt_len is updated; static_len is also updated if stree is
 *     not null.
 */
local void gen_bitlen(deflate_state *s, tree_desc *desc) {
    ct_data *tree        = desc->dyn_tree;
    int max_code         = desc->max_code;
    const ct_data *stree = desc->stat_desc->static_tree;
    const intf *extra    = desc->stat_desc->extra_bits;
    int base             = desc->stat_desc->extra_base;
    int max_length       = desc->stat_desc->max_length;
    int h;              /* heap index */
    int n, m;           /* iterate over the tree elements */
    int bits;           /* bit length */
    int xbits;          /* extra bits */
    ush f;              /* frequency */
    int overflow = 0;   /* number of elements with bit length too large */

    for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;

    /* In a first pass, compute the optimal bit lengths (which may
     * overflow in the case of the bit length tree).
     */
    tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */

    for (h = s->heap_max + 1; h < HEAP_SIZE; h++) {
        n = s->heap[h];
        bits = tree[tree[n].Dad].Len + 1;
        if (bits > max_length) bits = max_length, overflow++;
        tree[n].Len = (ush)bits;
        /* We overwrite tree[n].Dad which is no longer needed */

        if (n > max_code) continue; /* not a leaf node */

        s->bl_count[bits]++;
        xbits = 0;
        if (n >= base) xbits = extra[n - base];
        f = tree[n].Freq;
        s->opt_len += (ulg)f * (unsigned)(bits + xbits);
        if (stree) s->static_len += (ulg)f * (unsigned)(stree[n].Len + xbits);
    }
    if (overflow == 0) return;

    Tracev((stderr,"\nbit length overflow\n"));
    /* This happens for example on obj2 and pic of the Calgary corpus */

    /* Find the first bit length which could increase: */
    do {
        bits = max_length - 1;
        while (s->bl_count[bits] == 0) bits--;
        s->bl_count[bits]--;        /* move one leaf down the tree */
        s->bl_count[bits + 1] += 2; /* move one overflow item as its brother */
        s->bl_count[max_length]--;
        /* The brother of the overflow item also moves one step up,
         * but this does not affect bl_count[max_length]
         */
        overflow -= 2;
    } while (overflow > 0);

    /* Now recompute all bit lengths, scanning in increasing frequency.
     * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
     * lengths instead of fixing only the wrong ones. This idea is taken
     * from 'ar' written by Haruhiko Okumura.)
     */
    for (bits = max_length; bits != 0; bits--) {
        n = s->bl_count[bits];
        while (n != 0) {
            m = s->heap[--h];
            if (m > max_code) continue;
            if ((unsigned) tree[m].Len != (unsigned) bits) {
                Tracev((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
                s->opt_len += ((ulg)bits - tree[m].Len) * tree[m].Freq;
                tree[m].Len = (ush)bits;
            }
            n--;
        }
    }
}

#ifdef DUMP_BL_TREE
#  include <stdio.h>
#endif

/* ===========================================================================
 * Construct one Huffman tree and assigns the code bit strings and lengths.
 * Update the total bit length for the current block.
 * IN assertion: the field freq is set for all tree elements.
 * OUT assertions: the fields len and code are set to the optimal bit length
 *     and corresponding code. The length opt_len is updated; static_len is
 *     also updated if stree is not null. The field max_code is set.
 */
local void build_tree(deflate_state *s, tree_desc *desc) {
    ct_data *tree         = desc->dyn_tree;
    const ct_data *stree  = desc->stat_desc->static_tree;
    int elems             = desc->stat_desc->elems;
    int n, m;          /* iterate over heap elements */
    int max_code = -1; /* largest code with non zero frequency */
    int node;          /* new node being created */

    /* Construct the initial heap, with least frequent element in
     * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n + 1].
     * heap[0] is not used.
     */
    s->heap_len = 0, s->heap_max = HEAP_SIZE;

    for (n = 0; n < elems; n++) {
        if (tree[n].Freq != 0) {
            s->heap[++(s->heap_len)] = max_code = n;
            s->depth[n] = 0;
        } else {
            tree[n].Len = 0;
        }
    }

    /* The pkzip format requires that at least one distance code exists,
     * and that at least one bit should be sent even if there is only one
     * possible code. So to avoid special checks later on we force at least
     * two codes of non zero frequency.
     */
    while (s->heap_len < 2) {
        node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
        tree[node].Freq = 1;
        s->depth[node] = 0;
        s->opt_len--; if (stree) s->static_len -= stree[node].Len;
        /* node is 0 or 1 so it does not have extra bits */
    }
    desc->max_code = max_code;

    /* The elements heap[heap_len/2 + 1 .. heap_len] are leaves of the tree,
     * establish sub-heaps of increasing lengths:
     */
    for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);

    /* Construct the Huffman tree by repeatedly combining the least two
     * frequent nodes.
     */
    node = elems;              /* next internal node of the tree */
    do {
        pqremove(s, tree, n);  /* n = node of least frequency */
        m = s->heap[SMALLEST]; /* m = node of next least frequency */

        s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
        s->heap[--(s->heap_max)] = m;

        /* Create a new node father of n and m */
        tree[node].Freq = tree[n].Freq + tree[m].Freq;
        s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?
                                s->depth[n] : s->depth[m]) + 1);
        tree[n].Dad = tree[m].Dad = (ush)node;
#ifdef DUMP_BL_TREE
        if (tree == s->bl_tree) {
            fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
                    node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
        }
#endif
        /* and insert the new node in the heap */
        s->heap[SMALLEST] = node++;
        pqdownheap(s, tree, SMALLEST);

    } while (s->heap_len >= 2);

    s->heap[--(s->heap_max)] = s->heap[SMALLEST];

    /* At this point, the fields freq and dad are set. We can now
     * generate the bit lengths.
     */
    gen_bitlen(s, (tree_desc *)desc);

    /* The field len is now set, we can generate the bit codes */
    gen_codes ((ct_data *)tree, max_code, s->bl_count);
}

/* ===========================================================================
 * Scan a literal or distance tree to determine the frequencies of the codes
 * in the bit length tree.
 */
local void scan_tree(deflate_state *s, ct_data *tree, int max_code) {
    int n;                     /* iterates over all tree elements */
    int prevlen = -1;          /* last emitted length */
    int curlen;                /* length of current code */
    int nextlen = tree[0].Len; /* length of next code */
    int count = 0;             /* repeat count of the current code */
    int max_count = 7;         /* max repeat count */
    int min_count = 4;         /* min repeat count */

    if (nextlen == 0) max_count = 138, min_count = 3;
    tree[max_code + 1].Len = (ush)0xffff; /* guard */

    for (n = 0; n <= max_code; n++) {
        curlen = nextlen; nextlen = tree[n + 1].Len;
        if (++count < max_count && curlen == nextlen) {
            continue;
        } else if (count < min_count) {
            s->bl_tree[curlen].Freq += count;
        } else if (curlen != 0) {
            if (curlen != prevlen) s->bl_tree[curlen].Freq++;
            s->bl_tree[REP_3_6].Freq++;
        } else if (count <= 10) {
            s->bl_tree[REPZ_3_10].Freq++;
        } else {
            s->bl_tree[REPZ_11_138].Freq++;
        }
        count = 0; prevlen = curlen;
        if (nextlen == 0) {
            max_count = 138, min_count = 3;
        } else if (curlen == nextlen) {
            max_count = 6, min_count = 3;
        } else {
            max_count = 7, min_count = 4;
        }
    }
}

/* ===========================================================================
 * Send a literal or distance tree in compressed form, using the codes in
 * bl_tree.
 */
local void send_tree(deflate_state *s, ct_data *tree, int max_code) {
    int n;                     /* iterates over all tree elements */
    int prevlen = -1;          /* last emitted length */
    int curlen;                /* length of current code */
    int nextlen = tree[0].Len; /* length of next code */
    int count = 0;             /* repeat count of the current code */
    int max_count = 7;         /* max repeat count */
    int min_count = 4;         /* min repeat count */

    /* tree[max_code + 1].Len = -1; */  /* guard already set */
    if (nextlen == 0) max_count = 138, min_count = 3;

    for (n = 0; n <= max_code; n++) {
        curlen = nextlen; nextlen = tree[n + 1].Len;
        if (++count < max_count && curlen == nextlen) {
            continue;
        } else if (count < min_count) {
            do { send_code(s, curlen, s->bl_tree); } while (--count != 0);

        } else if (curlen != 0) {
            if (curlen != prevlen) {
                send_code(s, curlen, s->bl_tree); count--;
            }
            Assert(count >= 3 && count <= 6, " 3_6?");
            send_code(s, REP_3_6, s->bl_tree); send_bits(s, count - 3, 2);

        } else if (count <= 10) {
            send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count - 3, 3);

        } else {
            send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count - 11, 7);
        }
        count = 0; prevlen = curlen;
        if (nextlen == 0) {
            max_count = 138, min_count = 3;
        } else if (curlen == nextlen) {
            max_count = 6, min_count = 3;
        } else {
            max_count = 7, min_count = 4;
        }
    }
}

/* ===========================================================================
 * Construct the Huffman tree for the bit lengths and return the index in
 * bl_order of the last bit length code to send.
 */
local int build_bl_tree(deflate_state *s) {
    int max_blindex;  /* index of last bit length code of non zero freq */

    /* Determine the bit length frequencies for literal and distance trees */
    scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
    scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);

    /* Build the bit length tree: */
    build_tree(s, (tree_desc *)(&(s->bl_desc)));
    /* opt_len now includes the length of the tree representations, except the
     * lengths of the bit lengths codes and the 5 + 5 + 4 bits for the counts.
     */

    /* Determine the number of bit length codes to send. The pkzip format
     * requires that at least 4 bit length codes be sent. (appnote.txt says
     * 3 but the actual value used is 4.)
     */
    for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
        if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
    }
    /* Update opt_len to include the bit length tree and counts */
    s->opt_len += 3*((ulg)max_blindex + 1) + 5 + 5 + 4;
    Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
            s->opt_len, s->static_len));

    return max_blindex;
}

/* ===========================================================================
 * Send the header for a block using dynamic Huffman trees: the counts, the
 * lengths of the bit length codes, the literal tree and the distance tree.
 * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
 */
local void send_all_trees(deflate_state *s, int lcodes, int dcodes,
                          int blcodes) {
    int rank;                    /* index in bl_order */

    Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
    Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
            "too many codes");
    Tracev((stderr, "\nbl counts: "));
    send_bits(s, lcodes - 257, 5);  /* not +255 as stated in appnote.txt */
    send_bits(s, dcodes - 1,   5);
    send_bits(s, blcodes - 4,  4);  /* not -3 as stated in appnote.txt */
    for (rank = 0; rank < blcodes; rank++) {
        Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
        send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
    }
    Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));

    send_tree(s, (ct_data *)s->dyn_ltree, lcodes - 1);  /* literal tree */
    Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));

    send_tree(s, (ct_data *)s->dyn_dtree, dcodes - 1);  /* distance tree */
    Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
}

/* ===========================================================================
 * Send a stored block
 */
void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
                                    ulg stored_len, int last) {
    send_bits(s, (STORED_BLOCK<<1) + last, 3);  /* send block type */
    bi_windup(s);        /* align on byte boundary */
    put_short(s, (ush)stored_len);
    put_short(s, (ush)~stored_len);
    if (stored_len)
        zmemcpy(s->pending_buf + s->pending, (Bytef *)buf, stored_len);
    s->pending += stored_len;
#ifdef ZLIB_DEBUG
    s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
    s->compressed_len += (stored_len + 4) << 3;
    s->bits_sent += 2*16;
    s->bits_sent += stored_len << 3;
#endif
}

/* ===========================================================================
 * Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
 */
void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s) {
    bi_flush(s);
}

/* ===========================================================================
 * Send one empty static block to give enough lookahead for inflate.
 * This takes 10 bits, of which 7 may remain in the bit buffer.
 */
void ZLIB_INTERNAL _tr_align(deflate_state *s) {
    send_bits(s, STATIC_TREES<<1, 3);
    send_code(s, END_BLOCK, static_ltree);
#ifdef ZLIB_DEBUG
    s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
#endif
    bi_flush(s);
}

/* ===========================================================================
 * Send the block data compressed using the given Huffman trees
 */
local void compress_block(deflate_state *s, const ct_data *ltree,
                          const ct_data *dtree) {
    unsigned dist;      /* distance of matched string */
    int lc;             /* match length or unmatched char (if dist == 0) */
    unsigned sx = 0;    /* running index in symbol buffers */
    unsigned code;      /* the code to send */
    int extra;          /* number of extra bits to send */

    if (s->sym_next != 0) do {
#ifdef LIT_MEM
        dist = s->d_buf[sx];
        lc = s->l_buf[sx++];
#else
        dist = s->sym_buf[sx++] & 0xff;
        dist += (unsigned)(s->sym_buf[sx++] & 0xff) << 8;
        lc = s->sym_buf[sx++];
#endif
        if (dist == 0) {
            send_code(s, lc, ltree); /* send a literal byte */
            Tracecv(isgraph(lc), (stderr," '%c' ", lc));
        } else {
            /* Here, lc is the match length - MIN_MATCH */
            code = _length_code[lc];
            send_code(s, code + LITERALS + 1, ltree);   /* send length code */
            extra = extra_lbits[code];
            if (extra != 0) {
                lc -= base_length[code];
                send_bits(s, lc, extra);       /* send the extra length bits */
            }
            dist--; /* dist is now the match distance - 1 */
            code = d_code(dist);
            Assert (code < D_CODES, "bad d_code");

            send_code(s, code, dtree);       /* send the distance code */
            extra = extra_dbits[code];
            if (extra != 0) {
                dist -= (unsigned)base_dist[code];
                send_bits(s, dist, extra);   /* send the extra distance bits */
            }
        } /* literal or match pair ? */

        /* Check for no overlay of pending_buf on needed symbols */
#ifdef LIT_MEM
        Assert(s->pending < 2 * (s->lit_bufsize + sx), "pendingBuf overflow");
#else
        Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
#endif

    } while (sx < s->sym_next);

    send_code(s, END_BLOCK, ltree);
}

/* ===========================================================================
 * Check if the data type is TEXT or BINARY, using the following algorithm:
 * - TEXT if the two conditions below are satisfied:
 *    a) There are no non-portable control characters belonging to the
 *       "block list" (0..6, 14..25, 28..31).
 *    b) There is at least one printable character belonging to the
 *       "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
 * - BINARY otherwise.
 * - The following partially-portable control characters form a
 *   "gray list" that is ignored in this detection algorithm:
 *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
 * IN assertion: the fields Freq of dyn_ltree are set.
 */
local int detect_data_type(deflate_state *s) {
    /* block_mask is the bit mask of block-listed bytes
     * set bits 0..6, 14..25, and 28..31
     * 0xf3ffc07f = binary 11110011111111111100000001111111
     */
    unsigned long block_mask = 0xf3ffc07fUL;
    int n;

    /* Check for non-textual ("block-listed") bytes. */
    for (n = 0; n <= 31; n++, block_mask >>= 1)
        if ((block_mask & 1) && (s->dyn_ltree[n].Freq != 0))
            return Z_BINARY;

    /* Check for textual ("allow-listed") bytes. */
    if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
            || s->dyn_ltree[13].Freq != 0)
        return Z_TEXT;
    for (n = 32; n < LITERALS; n++)
        if (s->dyn_ltree[n].Freq != 0)
            return Z_TEXT;

    /* There are no "block-listed" or "allow-listed" bytes:
     * this stream either is empty or has tolerated ("gray-listed") bytes only.
     */
    return Z_BINARY;
}

/* ===========================================================================
 * Determine the best encoding for the current block: dynamic trees, static
 * trees or store, and write out the encoded block.
 */
void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
                                   ulg stored_len, int last) {
    ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
    int max_blindex = 0;  /* index of last bit length code of non zero freq */

    /* Build the Huffman trees unless a stored block is forced */
    if (s->level > 0) {

        /* Check if the file is binary or text */
        if (s->strm->data_type == Z_UNKNOWN)
            s->strm->data_type = detect_data_type(s);

        /* Construct the literal and distance trees */
        build_tree(s, (tree_desc *)(&(s->l_desc)));
        Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
                s->static_len));

        build_tree(s, (tree_desc *)(&(s->d_desc)));
        Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
                s->static_len));
        /* At this point, opt_len and static_len are the total bit lengths of
         * the compressed block data, excluding the tree representations.
         */

        /* Build the bit length tree for the above two trees, and get the index
         * in bl_order of the last bit length code to send.
         */
        max_blindex = build_bl_tree(s);

        /* Determine the best encoding. Compute the block lengths in bytes. */
        opt_lenb = (s->opt_len + 3 + 7) >> 3;
        static_lenb = (s->static_len + 3 + 7) >> 3;

        Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
                opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
                s->sym_next / 3));

#ifndef FORCE_STATIC
        if (static_lenb <= opt_lenb || s->strategy == Z_FIXED)
#endif
            opt_lenb = static_lenb;

    } else {
        Assert(buf != (char*)0, "lost buf");
        opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
    }

#ifdef FORCE_STORED
    if (buf != (char*)0) { /* force stored block */
#else
    if (stored_len + 4 <= opt_lenb && buf != (char*)0) {
                       /* 4: two words for the lengths */
#endif
        /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
         * Otherwise we can't have processed more than WSIZE input bytes since
         * the last block flush, because compression would have been
         * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
         * transform a block into a stored block.
         */
        _tr_stored_block(s, buf, stored_len, last);

    } else if (static_lenb == opt_lenb) {
        send_bits(s, (STATIC_TREES<<1) + last, 3);
        compress_block(s, (const ct_data *)static_ltree,
                       (const ct_data *)static_dtree);
#ifdef ZLIB_DEBUG
        s->compressed_len += 3 + s->static_len;
#endif
    } else {
        send_bits(s, (DYN_TREES<<1) + last, 3);
        send_all_trees(s, s->l_desc.max_code + 1, s->d_desc.max_code + 1,
                       max_blindex + 1);
        compress_block(s, (const ct_data *)s->dyn_ltree,
                       (const ct_data *)s->dyn_dtree);
#ifdef ZLIB_DEBUG
        s->compressed_len += 3 + s->opt_len;
#endif
    }
    Assert (s->compressed_len == s->bits_sent, "bad compressed size");
    /* The above check is made mod 2^32, for files larger than 512 MB
     * and uLong implemented on 32 bits.
     */
    init_block(s);

    if (last) {
        bi_windup(s);
#ifdef ZLIB_DEBUG
        s->compressed_len += 7;  /* align on byte boundary */
#endif
    }
    Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len >> 3,
           s->compressed_len - 7*last));
}

/* ===========================================================================
 * Save the match info and tally the frequency counts. Return true if
 * the current block must be flushed.
 */
int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc) {
#ifdef LIT_MEM
    s->d_buf[s->sym_next] = (ush)dist;
    s->l_buf[s->sym_next++] = (uch)lc;
#else
    s->sym_buf[s->sym_next++] = (uch)dist;
    s->sym_buf[s->sym_next++] = (uch)(dist >> 8);
    s->sym_buf[s->sym_next++] = (uch)lc;
#endif
    if (dist == 0) {
        /* lc is the unmatched char */
        s->dyn_ltree[lc].Freq++;
    } else {
        s->matches++;
        /* Here, lc is the match length - MIN_MATCH */
        dist--;             /* dist = match distance - 1 */
        Assert((ush)dist < (ush)MAX_DIST(s) &&
               (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
               (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");

        s->dyn_ltree[_length_code[lc] + LITERALS + 1].Freq++;
        s->dyn_dtree[d_code(dist)].Freq++;
    }
    return (s->sym_next == s->sym_end);
}
Added compat/zlib/trees.h.
































































































































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/* header created automatically with -DGEN_TREES_H */

local const ct_data static_ltree[L_CODES+2] = {
{{ 12},{  8}}, {{140},{  8}}, {{ 76},{  8}}, {{204},{  8}}, {{ 44},{  8}},
{{172},{  8}}, {{108},{  8}}, {{236},{  8}}, {{ 28},{  8}}, {{156},{  8}},
{{ 92},{  8}}, {{220},{  8}}, {{ 60},{  8}}, {{188},{  8}}, {{124},{  8}},
{{252},{  8}}, {{  2},{  8}}, {{130},{  8}}, {{ 66},{  8}}, {{194},{  8}},
{{ 34},{  8}}, {{162},{  8}}, {{ 98},{  8}}, {{226},{  8}}, {{ 18},{  8}},
{{146},{  8}}, {{ 82},{  8}}, {{210},{  8}}, {{ 50},{  8}}, {{178},{  8}},
{{114},{  8}}, {{242},{  8}}, {{ 10},{  8}}, {{138},{  8}}, {{ 74},{  8}},
{{202},{  8}}, {{ 42},{  8}}, {{170},{  8}}, {{106},{  8}}, {{234},{  8}},
{{ 26},{  8}}, {{154},{  8}}, {{ 90},{  8}}, {{218},{  8}}, {{ 58},{  8}},
{{186},{  8}}, {{122},{  8}}, {{250},{  8}}, {{  6},{  8}}, {{134},{  8}},
{{ 70},{  8}}, {{198},{  8}}, {{ 38},{  8}}, {{166},{  8}}, {{102},{  8}},
{{230},{  8}}, {{ 22},{  8}}, {{150},{  8}}, {{ 86},{  8}}, {{214},{  8}},
{{ 54},{  8}}, {{182},{  8}}, {{118},{  8}}, {{246},{  8}}, {{ 14},{  8}},
{{142},{  8}}, {{ 78},{  8}}, {{206},{  8}}, {{ 46},{  8}}, {{174},{  8}},
{{110},{  8}}, {{238},{  8}}, {{ 30},{  8}}, {{158},{  8}}, {{ 94},{  8}},
{{222},{  8}}, {{ 62},{  8}}, {{190},{  8}}, {{126},{  8}}, {{254},{  8}},
{{  1},{  8}}, {{129},{  8}}, {{ 65},{  8}}, {{193},{  8}}, {{ 33},{  8}},
{{161},{  8}}, {{ 97},{  8}}, {{225},{  8}}, {{ 17},{  8}}, {{145},{  8}},
{{ 81},{  8}}, {{209},{  8}}, {{ 49},{  8}}, {{177},{  8}}, {{113},{  8}},
{{241},{  8}}, {{  9},{  8}}, {{137},{  8}}, {{ 73},{  8}}, {{201},{  8}},
{{ 41},{  8}}, {{169},{  8}}, {{105},{  8}}, {{233},{  8}}, {{ 25},{  8}},
{{153},{  8}}, {{ 89},{  8}}, {{217},{  8}}, {{ 57},{  8}}, {{185},{  8}},
{{121},{  8}}, {{249},{  8}}, {{  5},{  8}}, {{133},{  8}}, {{ 69},{  8}},
{{197},{  8}}, {{ 37},{  8}}, {{165},{  8}}, {{101},{  8}}, {{229},{  8}},
{{ 21},{  8}}, {{149},{  8}}, {{ 85},{  8}}, {{213},{  8}}, {{ 53},{  8}},
{{181},{  8}}, {{117},{  8}}, {{245},{  8}}, {{ 13},{  8}}, {{141},{  8}},
{{ 77},{  8}}, {{205},{  8}}, {{ 45},{  8}}, {{173},{  8}}, {{109},{  8}},
{{237},{  8}}, {{ 29},{  8}}, {{157},{  8}}, {{ 93},{  8}}, {{221},{  8}},
{{ 61},{  8}}, {{189},{  8}}, {{125},{  8}}, {{253},{  8}}, {{ 19},{  9}},
{{275},{  9}}, {{147},{  9}}, {{403},{  9}}, {{ 83},{  9}}, {{339},{  9}},
{{211},{  9}}, {{467},{  9}}, {{ 51},{  9}}, {{307},{  9}}, {{179},{  9}},
{{435},{  9}}, {{115},{  9}}, {{371},{  9}}, {{243},{  9}}, {{499},{  9}},
{{ 11},{  9}}, {{267},{  9}}, {{139},{  9}}, {{395},{  9}}, {{ 75},{  9}},
{{331},{  9}}, {{203},{  9}}, {{459},{  9}}, {{ 43},{  9}}, {{299},{  9}},
{{171},{  9}}, {{427},{  9}}, {{107},{  9}}, {{363},{  9}}, {{235},{  9}},
{{491},{  9}}, {{ 27},{  9}}, {{283},{  9}}, {{155},{  9}}, {{411},{  9}},
{{ 91},{  9}}, {{347},{  9}}, {{219},{  9}}, {{475},{  9}}, {{ 59},{  9}},
{{315},{  9}}, {{187},{  9}}, {{443},{  9}}, {{123},{  9}}, {{379},{  9}},
{{251},{  9}}, {{507},{  9}}, {{  7},{  9}}, {{263},{  9}}, {{135},{  9}},
{{391},{  9}}, {{ 71},{  9}}, {{327},{  9}}, {{199},{  9}}, {{455},{  9}},
{{ 39},{  9}}, {{295},{  9}}, {{167},{  9}}, {{423},{  9}}, {{103},{  9}},
{{359},{  9}}, {{231},{  9}}, {{487},{  9}}, {{ 23},{  9}}, {{279},{  9}},
{{151},{  9}}, {{407},{  9}}, {{ 87},{  9}}, {{343},{  9}}, {{215},{  9}},
{{471},{  9}}, {{ 55},{  9}}, {{311},{  9}}, {{183},{  9}}, {{439},{  9}},
{{119},{  9}}, {{375},{  9}}, {{247},{  9}}, {{503},{  9}}, {{ 15},{  9}},
{{271},{  9}}, {{143},{  9}}, {{399},{  9}}, {{ 79},{  9}}, {{335},{  9}},
{{207},{  9}}, {{463},{  9}}, {{ 47},{  9}}, {{303},{  9}}, {{175},{  9}},
{{431},{  9}}, {{111},{  9}}, {{367},{  9}}, {{239},{  9}}, {{495},{  9}},
{{ 31},{  9}}, {{287},{  9}}, {{159},{  9}}, {{415},{  9}}, {{ 95},{  9}},
{{351},{  9}}, {{223},{  9}}, {{479},{  9}}, {{ 63},{  9}}, {{319},{  9}},
{{191},{  9}}, {{447},{  9}}, {{127},{  9}}, {{383},{  9}}, {{255},{  9}},
{{511},{  9}}, {{  0},{  7}}, {{ 64},{  7}}, {{ 32},{  7}}, {{ 96},{  7}},
{{ 16},{  7}}, {{ 80},{  7}}, {{ 48},{  7}}, {{112},{  7}}, {{  8},{  7}},
{{ 72},{  7}}, {{ 40},{  7}}, {{104},{  7}}, {{ 24},{  7}}, {{ 88},{  7}},
{{ 56},{  7}}, {{120},{  7}}, {{  4},{  7}}, {{ 68},{  7}}, {{ 36},{  7}},
{{100},{  7}}, {{ 20},{  7}}, {{ 84},{  7}}, {{ 52},{  7}}, {{116},{  7}},
{{  3},{  8}}, {{131},{  8}}, {{ 67},{  8}}, {{195},{  8}}, {{ 35},{  8}},
{{163},{  8}}, {{ 99},{  8}}, {{227},{  8}}
};

local const ct_data static_dtree[D_CODES] = {
{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
};

const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {
 0,  1,  2,  3,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,
 8,  8,  8,  8,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,  0,  0, 16, 17,
18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
};

const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {
 0,  1,  2,  3,  4,  5,  6,  7,  8,  8,  9,  9, 10, 10, 11, 11, 12, 12, 12, 12,
13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
};

local const int base_length[LENGTH_CODES] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
64, 80, 96, 112, 128, 160, 192, 224, 0
};

local const int base_dist[D_CODES] = {
    0,     1,     2,     3,     4,     6,     8,    12,    16,    24,
   32,    48,    64,    96,   128,   192,   256,   384,   512,   768,
 1024,  1536,  2048,  3072,  4096,  6144,  8192, 12288, 16384, 24576
};

Added compat/zlib/uncompr.c.





















































































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/* uncompr.c -- decompress a memory buffer
 * Copyright (C) 1995-2003, 2010, 2014, 2016 Jean-loup Gailly, Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#define ZLIB_INTERNAL
#include "zlib.h"

/* ===========================================================================
     Decompresses the source buffer into the destination buffer.  *sourceLen is
   the byte length of the source buffer. Upon entry, *destLen is the total size
   of the destination buffer, which must be large enough to hold the entire
   uncompressed data. (The size of the uncompressed data must have been saved
   previously by the compressor and transmitted to the decompressor by some
   mechanism outside the scope of this compression library.) Upon exit,
   *destLen is the size of the decompressed data and *sourceLen is the number
   of source bytes consumed. Upon return, source + *sourceLen points to the
   first unused input byte.

     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_BUF_ERROR if there was not enough room in the output buffer, or
   Z_DATA_ERROR if the input data was corrupted, including if the input data is
   an incomplete zlib stream.
*/
int ZEXPORT uncompress2(Bytef *dest, uLongf *destLen, const Bytef *source,
                        uLong *sourceLen) {
    z_stream stream;
    int err;
    const uInt max = (uInt)-1;
    uLong len, left;
    Byte buf[1];    /* for detection of incomplete stream when *destLen == 0 */

    len = *sourceLen;
    if (*destLen) {
        left = *destLen;
        *destLen = 0;
    }
    else {
        left = 1;
        dest = buf;
    }

    stream.next_in = (z_const Bytef *)source;
    stream.avail_in = 0;
    stream.zalloc = (alloc_func)0;
    stream.zfree = (free_func)0;
    stream.opaque = (voidpf)0;

    err = inflateInit(&stream);
    if (err != Z_OK) return err;

    stream.next_out = dest;
    stream.avail_out = 0;

    do {
        if (stream.avail_out == 0) {
            stream.avail_out = left > (uLong)max ? max : (uInt)left;
            left -= stream.avail_out;
        }
        if (stream.avail_in == 0) {
            stream.avail_in = len > (uLong)max ? max : (uInt)len;
            len -= stream.avail_in;
        }
        err = inflate(&stream, Z_NO_FLUSH);
    } while (err == Z_OK);

    *sourceLen -= len + stream.avail_in;
    if (dest != buf)
        *destLen = stream.total_out;
    else if (stream.total_out && err == Z_BUF_ERROR)
        left = 1;

    inflateEnd(&stream);
    return err == Z_STREAM_END ? Z_OK :
           err == Z_NEED_DICT ? Z_DATA_ERROR  :
           err == Z_BUF_ERROR && left + stream.avail_out ? Z_DATA_ERROR :
           err;
}

int ZEXPORT uncompress(Bytef *dest, uLongf *destLen, const Bytef *source,
                       uLong sourceLen) {
    return uncompress2(dest, destLen, source, &sourceLen);
}
Added compat/zlib/watcom/watcom_f.mak.











































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# Makefile for zlib
# OpenWatcom flat model
# Last updated: 28-Dec-2005

# To use, do "wmake -f watcom_f.mak"

C_SOURCE =  adler32.c  compress.c crc32.c   deflate.c    &
	    gzclose.c  gzlib.c    gzread.c  gzwrite.c    &
            infback.c  inffast.c  inflate.c inftrees.c   &
            trees.c    uncompr.c  zutil.c

OBJS =      adler32.obj  compress.obj crc32.obj   deflate.obj    &
	    gzclose.obj  gzlib.obj    gzread.obj  gzwrite.obj    &
            infback.obj  inffast.obj  inflate.obj inftrees.obj   &
            trees.obj    uncompr.obj  zutil.obj

CC       = wcc386
LINKER   = wcl386
CFLAGS   = -zq -mf -3r -fp3 -s -bt=dos -oilrtfm -fr=nul -wx
ZLIB_LIB = zlib_f.lib

.C.OBJ:
        $(CC) $(CFLAGS) $[@

all: $(ZLIB_LIB) example.exe minigzip.exe

$(ZLIB_LIB): $(OBJS)
	wlib -b -c $(ZLIB_LIB) -+adler32.obj  -+compress.obj -+crc32.obj
	wlib -b -c $(ZLIB_LIB) -+gzclose.obj  -+gzlib.obj    -+gzread.obj   -+gzwrite.obj
        wlib -b -c $(ZLIB_LIB) -+deflate.obj  -+infback.obj
        wlib -b -c $(ZLIB_LIB) -+inffast.obj  -+inflate.obj  -+inftrees.obj
        wlib -b -c $(ZLIB_LIB) -+trees.obj    -+uncompr.obj  -+zutil.obj

example.exe: $(ZLIB_LIB) example.obj
	$(LINKER) -ldos32a -fe=example.exe example.obj $(ZLIB_LIB)

minigzip.exe: $(ZLIB_LIB) minigzip.obj
	$(LINKER) -ldos32a -fe=minigzip.exe minigzip.obj $(ZLIB_LIB)

clean: .SYMBOLIC
          del *.obj
          del $(ZLIB_LIB)
          @echo Cleaning done
Added compat/zlib/watcom/watcom_l.mak.











































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# Makefile for zlib
# OpenWatcom large model
# Last updated: 28-Dec-2005

# To use, do "wmake -f watcom_l.mak"

C_SOURCE =  adler32.c  compress.c crc32.c   deflate.c    &
	    gzclose.c  gzlib.c    gzread.c  gzwrite.c    &
            infback.c  inffast.c  inflate.c inftrees.c   &
            trees.c    uncompr.c  zutil.c

OBJS =      adler32.obj  compress.obj crc32.obj   deflate.obj    &
	    gzclose.obj  gzlib.obj    gzread.obj  gzwrite.obj    &
            infback.obj  inffast.obj  inflate.obj inftrees.obj   &
            trees.obj    uncompr.obj  zutil.obj

CC       = wcc
LINKER   = wcl
CFLAGS   = -zq -ml -s -bt=dos -oilrtfm -fr=nul -wx
ZLIB_LIB = zlib_l.lib

.C.OBJ:
        $(CC) $(CFLAGS) $[@

all: $(ZLIB_LIB) example.exe minigzip.exe

$(ZLIB_LIB): $(OBJS)
	wlib -b -c $(ZLIB_LIB) -+adler32.obj  -+compress.obj -+crc32.obj
	wlib -b -c $(ZLIB_LIB) -+gzclose.obj  -+gzlib.obj    -+gzread.obj   -+gzwrite.obj
        wlib -b -c $(ZLIB_LIB) -+deflate.obj  -+infback.obj
        wlib -b -c $(ZLIB_LIB) -+inffast.obj  -+inflate.obj  -+inftrees.obj
        wlib -b -c $(ZLIB_LIB) -+trees.obj    -+uncompr.obj  -+zutil.obj

example.exe: $(ZLIB_LIB) example.obj
	$(LINKER) -fe=example.exe example.obj $(ZLIB_LIB)

minigzip.exe: $(ZLIB_LIB) minigzip.obj
	$(LINKER) -fe=minigzip.exe minigzip.obj $(ZLIB_LIB)

clean: .SYMBOLIC
          del *.obj
          del $(ZLIB_LIB)
          @echo Cleaning done
Added compat/zlib/win32/DLL_FAQ.txt.





























































































































































































































































































































































































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            Frequently Asked Questions about ZLIB1.DLL


This document describes the design, the rationale, and the usage
of the common DLL build of zlib, named ZLIB1.DLL.  If you have
general questions about zlib, you should see the file "FAQ" found
in the zlib distribution, or at the following location:
  http://www.gzip.org/zlib/zlib_faq.html


 1. What is ZLIB1.DLL, and how can I get it?

  - ZLIB1.DLL is the common build of zlib as a DLL.
    (Please remark the character '1' in the name.)

    Applications that link to ZLIB1.DLL can rely on the following
    specification:

    * The exported symbols are exclusively defined in the source
      files "zlib.h" and "zlib.def", found in an official zlib
      source distribution.
    * The symbols are exported by name, not by ordinal.
    * The exported names are undecorated.
    * The calling convention of functions is "C" (CDECL).
    * The ZLIB1.DLL binary is linked to MSVCRT.DLL.

    The archive in which ZLIB1.DLL is bundled contains compiled
    test programs that must run with a valid build of ZLIB1.DLL.
    It is recommended to download the prebuilt DLL from the zlib
    web site, instead of building it yourself, to avoid potential
    incompatibilities that could be introduced by your compiler
    and build settings.  If you do build the DLL yourself, please
    make sure that it complies with all the above requirements,
    and it runs with the precompiled test programs, bundled with
    the original ZLIB1.DLL distribution.

    If, for any reason, you need to build an incompatible DLL,
    please use a different file name.


 2. Why did you change the name of the DLL to ZLIB1.DLL?
    What happened to the old ZLIB.DLL?

  - The old ZLIB.DLL, built from zlib-1.1.4 or earlier, required
    compilation settings that were incompatible to those used by
    a static build.  The DLL settings were supposed to be enabled
    by defining the macro ZLIB_DLL, before including "zlib.h".
    Incorrect handling of this macro was silently accepted at
    build time, resulting in two major problems:

    * ZLIB_DLL was missing from the old makefile.  When building
      the DLL, not all people added it to the build options.  In
      consequence, incompatible incarnations of ZLIB.DLL started
      to circulate around the net.

    * When switching from using the static library to using the
      DLL, applications had to define the ZLIB_DLL macro and
      to recompile all the sources that contained calls to zlib
      functions.  Failure to do so resulted in creating binaries
      that were unable to run with the official ZLIB.DLL build.

    The only possible solution that we could foresee was to make
    a binary-incompatible change in the DLL interface, in order to
    remove the dependency on the ZLIB_DLL macro, and to release
    the new DLL under a different name.

    We chose the name ZLIB1.DLL, where '1' indicates the major
    zlib version number.  We hope that we will not have to break
    the binary compatibility again, at least not as long as the
    zlib-1.x series will last.

    There is still a ZLIB_DLL macro, that can trigger a more
    efficient build and use of the DLL, but compatibility no
    longer dependents on it.


 3. Can I build ZLIB.DLL from the new zlib sources, and replace
    an old ZLIB.DLL, that was built from zlib-1.1.4 or earlier?

  - In principle, you can do it by assigning calling convention
    keywords to the macros ZEXPORT and ZEXPORTVA.  In practice,
    it depends on what you mean by "an old ZLIB.DLL", because the
    old DLL exists in several mutually-incompatible versions.
    You have to find out first what kind of calling convention is
    being used in your particular ZLIB.DLL build, and to use the
    same one in the new build.  If you don't know what this is all
    about, you might be better off if you would just leave the old
    DLL intact.


 4. Can I compile my application using the new zlib interface, and
    link it to an old ZLIB.DLL, that was built from zlib-1.1.4 or
    earlier?

  - The official answer is "no"; the real answer depends again on
    what kind of ZLIB.DLL you have.  Even if you are lucky, this
    course of action is unreliable.

    If you rebuild your application and you intend to use a newer
    version of zlib (post- 1.1.4), it is strongly recommended to
    link it to the new ZLIB1.DLL.


 5. Why are the zlib symbols exported by name, and not by ordinal?

  - Although exporting symbols by ordinal is a little faster, it
    is risky.  Any single glitch in the maintenance or use of the
    DEF file that contains the ordinals can result in incompatible
    builds and frustrating crashes.  Simply put, the benefits of
    exporting symbols by ordinal do not justify the risks.

    Technically, it should be possible to maintain ordinals in
    the DEF file, and still export the symbols by name.  Ordinals
    exist in every DLL, and even if the dynamic linking performed
    at the DLL startup is searching for names, ordinals serve as
    hints, for a faster name lookup.  However, if the DEF file
    contains ordinals, the Microsoft linker automatically builds
    an implib that will cause the executables linked to it to use
    those ordinals, and not the names.  It is interesting to
    notice that the GNU linker for Win32 does not suffer from this
    problem.

    It is possible to avoid the DEF file if the exported symbols
    are accompanied by a "__declspec(dllexport)" attribute in the
    source files.  You can do this in zlib by predefining the
    ZLIB_DLL macro.


 6. I see that the ZLIB1.DLL functions use the "C" (CDECL) calling
    convention.  Why not use the STDCALL convention?
    STDCALL is the standard convention in Win32, and I need it in
    my Visual Basic project!

    (For readability, we use CDECL to refer to the convention
     triggered by the "__cdecl" keyword, STDCALL to refer to
     the convention triggered by "__stdcall", and FASTCALL to
     refer to the convention triggered by "__fastcall".)

  - Most of the native Windows API functions (without varargs) use
    indeed the WINAPI convention (which translates to STDCALL in
    Win32), but the standard C functions use CDECL.  If a user
    application is intrinsically tied to the Windows API (e.g.
    it calls native Windows API functions such as CreateFile()),
    sometimes it makes sense to decorate its own functions with
    WINAPI.  But if ANSI C or POSIX portability is a goal (e.g.
    it calls standard C functions such as fopen()), it is not a
    sound decision to request the inclusion of <windows.h>, or to
    use non-ANSI constructs, for the sole purpose to make the user
    functions STDCALL-able.

    The functionality offered by zlib is not in the category of
    "Windows functionality", but is more like "C functionality".

    Technically, STDCALL is not bad; in fact, it is slightly
    faster than CDECL, and it works with variable-argument
    functions, just like CDECL.  It is unfortunate that, in spite
    of using STDCALL in the Windows API, it is not the default
    convention used by the C compilers that run under Windows.
    The roots of the problem reside deep inside the unsafety of
    the K&R-style function prototypes, where the argument types
    are not specified; but that is another story for another day.

    The remaining fact is that CDECL is the default convention.
    Even if an explicit convention is hard-coded into the function
    prototypes inside C headers, problems may appear.  The
    necessity to expose the convention in users' callbacks is one
    of these problems.

    The calling convention issues are also important when using
    zlib in other programming languages.  Some of them, like Ada
    (GNAT) and Fortran (GNU G77), have C bindings implemented
    initially on Unix, and relying on the C calling convention.
    On the other hand, the pre- .NET versions of Microsoft Visual
    Basic require STDCALL, while Borland Delphi prefers, although
    it does not require, FASTCALL.

    In fairness to all possible uses of zlib outside the C
    programming language, we choose the default "C" convention.
    Anyone interested in different bindings or conventions is
    encouraged to maintain specialized projects.  The "contrib/"
    directory from the zlib distribution already holds a couple
    of foreign bindings, such as Ada, C++, and Delphi.


 7. I need a DLL for my Visual Basic project.  What can I do?

  - Define the ZLIB_WINAPI macro before including "zlib.h", when
    building both the DLL and the user application (except that
    you don't need to define anything when using the DLL in Visual
    Basic).  The ZLIB_WINAPI macro will switch on the WINAPI
    (STDCALL) convention.  The name of this DLL must be different
    than the official ZLIB1.DLL.

    Gilles Vollant has contributed a build named ZLIBWAPI.DLL,
    with the ZLIB_WINAPI macro turned on, and with the minizip
    functionality built in.  For more information, please read
    the notes inside "contrib/vstudio/readme.txt", found in the
    zlib distribution.


 8. I need to use zlib in my Microsoft .NET project.  What can I
    do?

  - Henrik Ravn has contributed a .NET wrapper around zlib.  Look
    into contrib/dotzlib/, inside the zlib distribution.


 9. If my application uses ZLIB1.DLL, should I link it to
    MSVCRT.DLL?  Why?

  - It is not required, but it is recommended to link your
    application to MSVCRT.DLL, if it uses ZLIB1.DLL.

    The executables (.EXE, .DLL, etc.) that are involved in the
    same process and are using the C run-time library (i.e. they
    are calling standard C functions), must link to the same
    library.  There are several libraries in the Win32 system:
    CRTDLL.DLL, MSVCRT.DLL, the static C libraries, etc.
    Since ZLIB1.DLL is linked to MSVCRT.DLL, the executables that
    depend on it should also be linked to MSVCRT.DLL.


10. Why are you saying that ZLIB1.DLL and my application should
    be linked to the same C run-time (CRT) library?  I linked my
    application and my DLLs to different C libraries (e.g. my
    application to a static library, and my DLLs to MSVCRT.DLL),
    and everything works fine.

  - If a user library invokes only pure Win32 API (accessible via
    <windows.h> and the related headers), its DLL build will work
    in any context.  But if this library invokes standard C API,
    things get more complicated.

    There is a single Win32 library in a Win32 system.  Every
    function in this library resides in a single DLL module, that
    is safe to call from anywhere.  On the other hand, there are
    multiple versions of the C library, and each of them has its
    own separate internal state.  Standalone executables and user
    DLLs that call standard C functions must link to a C run-time
    (CRT) library, be it static or shared (DLL).  Intermixing
    occurs when an executable (not necessarily standalone) and a
    DLL are linked to different CRTs, and both are running in the
    same process.

    Intermixing multiple CRTs is possible, as long as their
    internal states are kept intact.  The Microsoft Knowledge Base
    articles KB94248 "HOWTO: Use the C Run-Time" and KB140584
    "HOWTO: Link with the Correct C Run-Time (CRT) Library"
    mention the potential problems raised by intermixing.

    If intermixing works for you, it's because your application
    and DLLs are avoiding the corruption of each of the CRTs'
    internal states, maybe by careful design, or maybe by fortune.

    Also note that linking ZLIB1.DLL to non-Microsoft CRTs, such
    as those provided by Borland, raises similar problems.


11. Why are you linking ZLIB1.DLL to MSVCRT.DLL?

  - MSVCRT.DLL exists on every Windows 95 with a new service pack
    installed, or with Microsoft Internet Explorer 4 or later, and
    on all other Windows 4.x or later (Windows 98, Windows NT 4,
    or later).  It is freely distributable; if not present in the
    system, it can be downloaded from Microsoft or from other
    software provider for free.

    The fact that MSVCRT.DLL does not exist on a virgin Windows 95
    is not so problematic.  Windows 95 is scarcely found nowadays,
    Microsoft ended its support a long time ago, and many recent
    applications from various vendors, including Microsoft, do not
    even run on it.  Furthermore, no serious user should run
    Windows 95 without a proper update installed.


12. Why are you not linking ZLIB1.DLL to
    <<my favorite C run-time library>> ?

  - We considered and abandoned the following alternatives:

    * Linking ZLIB1.DLL to a static C library (LIBC.LIB, or
      LIBCMT.LIB) is not a good option.  People are using the DLL
      mainly to save disk space.  If you are linking your program
      to a static C library, you may as well consider linking zlib
      in statically, too.

    * Linking ZLIB1.DLL to CRTDLL.DLL looks appealing, because
      CRTDLL.DLL is present on every Win32 installation.
      Unfortunately, it has a series of problems: it does not
      work properly with Microsoft's C++ libraries, it does not
      provide support for 64-bit file offsets, (and so on...),
      and Microsoft discontinued its support a long time ago.

    * Linking ZLIB1.DLL to MSVCR70.DLL or MSVCR71.DLL, supplied
      with the Microsoft .NET platform, and Visual C++ 7.0/7.1,
      raises problems related to the status of ZLIB1.DLL as a
      system component.  According to the Microsoft Knowledge Base
      article KB326922 "INFO: Redistribution of the Shared C
      Runtime Component in Visual C++ .NET", MSVCR70.DLL and
      MSVCR71.DLL are not supposed to function as system DLLs,
      because they may clash with MSVCRT.DLL.  Instead, the
      application's installer is supposed to put these DLLs
      (if needed) in the application's private directory.
      If ZLIB1.DLL depends on a non-system runtime, it cannot
      function as a redistributable system component.

    * Linking ZLIB1.DLL to non-Microsoft runtimes, such as
      Borland's, or Cygwin's, raises problems related to the
      reliable presence of these runtimes on Win32 systems.
      It's easier to let the DLL build of zlib up to the people
      who distribute these runtimes, and who may proceed as
      explained in the answer to Question 14.


13. If ZLIB1.DLL cannot be linked to MSVCR70.DLL or MSVCR71.DLL,
    how can I build/use ZLIB1.DLL in Microsoft Visual C++ 7.0
    (Visual Studio .NET) or newer?

  - Due to the problems explained in the Microsoft Knowledge Base
    article KB326922 (see the previous answer), the C runtime that
    comes with the VC7 environment is no longer considered a
    system component.  That is, it should not be assumed that this
    runtime exists, or may be installed in a system directory.
    Since ZLIB1.DLL is supposed to be a system component, it may
    not depend on a non-system component.

    In order to link ZLIB1.DLL and your application to MSVCRT.DLL
    in VC7, you need the library of Visual C++ 6.0 or older.  If
    you don't have this library at hand, it's probably best not to
    use ZLIB1.DLL.

    We are hoping that, in the future, Microsoft will provide a
    way to build applications linked to a proper system runtime,
    from the Visual C++ environment.  Until then, you have a
    couple of alternatives, such as linking zlib in statically.
    If your application requires dynamic linking, you may proceed
    as explained in the answer to Question 14.


14. I need to link my own DLL build to a CRT different than
    MSVCRT.DLL.  What can I do?

  - Feel free to rebuild the DLL from the zlib sources, and link
    it the way you want.  You should, however, clearly state that
    your build is unofficial.  You should give it a different file
    name, and/or install it in a private directory that can be
    accessed by your application only, and is not visible to the
    others (i.e. it's neither in the PATH, nor in the SYSTEM or
    SYSTEM32 directories).  Otherwise, your build may clash with
    applications that link to the official build.

    For example, in Cygwin, zlib is linked to the Cygwin runtime
    CYGWIN1.DLL, and it is distributed under the name CYGZ.DLL.


15. May I include additional pieces of code that I find useful,
    link them in ZLIB1.DLL, and export them?

  - No.  A legitimate build of ZLIB1.DLL must not include code
    that does not originate from the official zlib source code.
    But you can make your own private DLL build, under a different
    file name, as suggested in the previous answer.

    For example, zlib is a part of the VCL library, distributed
    with Borland Delphi and C++ Builder.  The DLL build of VCL
    is a redistributable file, named VCLxx.DLL.


16. May I remove some functionality out of ZLIB1.DLL, by enabling
    macros like NO_GZCOMPRESS or NO_GZIP at compile time?

  - No.  A legitimate build of ZLIB1.DLL must provide the complete
    zlib functionality, as implemented in the official zlib source
    code.  But you can make your own private DLL build, under a
    different file name, as suggested in the previous answer.

**

This document is written and maintained by
Cosmin Truta <cosmint@cs.ubbcluj.ro>
Added compat/zlib/win32/Makefile.bor.













































































































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# Makefile for zlib
# Borland C++ for Win32
#
# Usage:
#  make -f win32/Makefile.bor

# ------------ Borland C++ ------------

# Optional nonstandard preprocessor flags (e.g. -DMAX_MEM_LEVEL=7)
# should be added to the environment via "set LOCAL_ZLIB=-DFOO" or
# added to the declaration of LOC here:
LOC = $(LOCAL_ZLIB)

CC = bcc32
AS = bcc32
LD = bcc32
AR = tlib
CFLAGS  = -a -d -k- -O2 $(LOC)
ASFLAGS = $(LOC)
LDFLAGS = $(LOC)


# variables
ZLIB_LIB = zlib.lib

OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
#OBJA =
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
#OBJPA=


# targets
all: $(ZLIB_LIB) example.exe minigzip.exe

.c.obj:
	$(CC) -c $(CFLAGS) $<

.asm.obj:
	$(AS) -c $(ASFLAGS) $<

adler32.obj: adler32.c zlib.h zconf.h

compress.obj: compress.c zlib.h zconf.h

crc32.obj: crc32.c zlib.h zconf.h crc32.h

deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h

gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h

gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h

gzread.obj: gzread.c zlib.h zconf.h gzguts.h

gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h

infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h

inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
 inffast.h inffixed.h

inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h

trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h

uncompr.obj: uncompr.c zlib.h zconf.h

zutil.obj: zutil.c zutil.h zlib.h zconf.h

example.obj: test/example.c zlib.h zconf.h

minigzip.obj: test/minigzip.c zlib.h zconf.h


# For the sake of the old Borland make,
# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2) $(OBJA)
	-del $(ZLIB_LIB)
	$(AR) $(ZLIB_LIB) $(OBJP1)
	$(AR) $(ZLIB_LIB) $(OBJP2)
	$(AR) $(ZLIB_LIB) $(OBJPA)


# testing
test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

example.exe: example.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)

minigzip.exe: minigzip.obj $(ZLIB_LIB)
	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)


# cleanup
clean:
	-del $(ZLIB_LIB)
	-del *.obj
	-del *.exe
	-del *.tds
	-del zlib.bak
	-del foo.gz
Added compat/zlib/win32/Makefile.gcc.

















































































































































































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# Makefile for zlib, derived from Makefile.dj2.
# Modified for mingw32 by C. Spieler, 6/16/98.
# Updated for zlib 1.2.x by Christian Spieler and Cosmin Truta, Mar-2003.
# Last updated: Mar 2012.
# Tested under Cygwin and MinGW.

# Copyright (C) 1995-2003 Jean-loup Gailly.
# For conditions of distribution and use, see copyright notice in zlib.h

# To compile, or to compile and test, type from the top level zlib directory:
#
#   make -fwin32/Makefile.gcc;  make test testdll -fwin32/Makefile.gcc
#
# To install libz.a, zconf.h and zlib.h in the system directories, type:
#
#   make install -fwin32/Makefile.gcc
#
# BINARY_PATH, INCLUDE_PATH and LIBRARY_PATH must be set.
#
# To install the shared lib, append SHARED_MODE=1 to the make command :
#
#   make install -fwin32/Makefile.gcc SHARED_MODE=1

# Note:
# If the platform is *not* MinGW (e.g. it is Cygwin or UWIN),
# the DLL name should be changed from "zlib1.dll".

STATICLIB = libz.a
SHAREDLIB = zlib1.dll
IMPLIB    = libz.dll.a

#
# Set to 1 if shared object needs to be installed
#
SHARED_MODE=0

#LOC = -DZLIB_DEBUG -g

PREFIX =
CC = $(PREFIX)gcc
CFLAGS = $(LOC) -O3 -Wall

AS = $(CC)
ASFLAGS = $(LOC) -Wall

LD = $(CC)
LDFLAGS = $(LOC)

AR = $(PREFIX)ar
ARFLAGS = rcs

RC = $(PREFIX)windres
RCFLAGS = --define GCC_WINDRES

STRIP = $(PREFIX)strip

CP = cp -fp
# If GNU install is available, replace $(CP) with install.
INSTALL = $(CP)
RM = rm -f

prefix ?= /usr/local
exec_prefix = $(prefix)

OBJS = adler32.o compress.o crc32.o deflate.o gzclose.o gzlib.o gzread.o \
       gzwrite.o infback.o inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o
OBJA =

all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) example.exe minigzip.exe example_d.exe minigzip_d.exe

test: example.exe minigzip.exe
	./example
	echo hello world | ./minigzip | ./minigzip -d

testdll: example_d.exe minigzip_d.exe
	./example_d
	echo hello world | ./minigzip_d | ./minigzip_d -d

.c.o:
	$(CC) $(CFLAGS) -c -o $@ $<

.S.o:
	$(AS) $(ASFLAGS) -c -o $@ $<

$(STATICLIB): $(OBJS) $(OBJA)
	$(AR) $(ARFLAGS) $@ $(OBJS) $(OBJA)

$(IMPLIB): $(SHAREDLIB)

$(SHAREDLIB): win32/zlib.def $(OBJS) $(OBJA) zlibrc.o
	$(CC) -shared -Wl,--out-implib,$(IMPLIB) $(LDFLAGS) \
	-o $@ win32/zlib.def $(OBJS) $(OBJA) zlibrc.o
	$(STRIP) $@

example.exe: example.o $(STATICLIB)
	$(LD) $(LDFLAGS) -o $@ example.o $(STATICLIB)
	$(STRIP) $@

minigzip.exe: minigzip.o $(STATICLIB)
	$(LD) $(LDFLAGS) -o $@ minigzip.o $(STATICLIB)
	$(STRIP) $@

example_d.exe: example.o $(IMPLIB)
	$(LD) $(LDFLAGS) -o $@ example.o $(IMPLIB)
	$(STRIP) $@

minigzip_d.exe: minigzip.o $(IMPLIB)
	$(LD) $(LDFLAGS) -o $@ minigzip.o $(IMPLIB)
	$(STRIP) $@

example.o: test/example.c zlib.h zconf.h
	$(CC) $(CFLAGS) -I. -c -o $@ test/example.c

minigzip.o: test/minigzip.c zlib.h zconf.h
	$(CC) $(CFLAGS) -I. -c -o $@ test/minigzip.c

zlibrc.o: win32/zlib1.rc
	$(RC) $(RCFLAGS) -o $@ win32/zlib1.rc

.PHONY: install uninstall clean

install: zlib.h zconf.h $(STATICLIB) $(IMPLIB)
	@if test -z "$(DESTDIR)$(INCLUDE_PATH)" -o -z "$(DESTDIR)$(LIBRARY_PATH)" -o -z "$(DESTDIR)$(BINARY_PATH)"; then \
		echo INCLUDE_PATH, LIBRARY_PATH, and BINARY_PATH must be specified; \
		exit 1; \
	fi
	-@mkdir -p '$(DESTDIR)$(INCLUDE_PATH)'
	-@mkdir -p '$(DESTDIR)$(LIBRARY_PATH)' '$(DESTDIR)$(LIBRARY_PATH)'/pkgconfig
	-if [ "$(SHARED_MODE)" = "1" ]; then \
		mkdir -p '$(DESTDIR)$(BINARY_PATH)'; \
		$(INSTALL) $(SHAREDLIB) '$(DESTDIR)$(BINARY_PATH)'; \
		$(INSTALL) $(IMPLIB) '$(DESTDIR)$(LIBRARY_PATH)'; \
	fi
	-$(INSTALL) zlib.h '$(DESTDIR)$(INCLUDE_PATH)'
	-$(INSTALL) zconf.h '$(DESTDIR)$(INCLUDE_PATH)'
	-$(INSTALL) $(STATICLIB) '$(DESTDIR)$(LIBRARY_PATH)'
	sed \
		-e 's|@prefix@|${prefix}|g' \
		-e 's|@exec_prefix@|${exec_prefix}|g' \
		-e 's|@libdir@|$(LIBRARY_PATH)|g' \
		-e 's|@sharedlibdir@|$(LIBRARY_PATH)|g' \
		-e 's|@includedir@|$(INCLUDE_PATH)|g' \
		-e 's|@VERSION@|'`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' zlib.h`'|g' \
		zlib.pc.in > '$(DESTDIR)$(LIBRARY_PATH)'/pkgconfig/zlib.pc

uninstall:
	-if [ "$(SHARED_MODE)" = "1" ]; then \
		$(RM) '$(DESTDIR)$(BINARY_PATH)'/$(SHAREDLIB); \
		$(RM) '$(DESTDIR)$(LIBRARY_PATH)'/$(IMPLIB); \
	fi
	-$(RM) '$(DESTDIR)$(INCLUDE_PATH)'/zlib.h
	-$(RM) '$(DESTDIR)$(INCLUDE_PATH)'/zconf.h
	-$(RM) '$(DESTDIR)$(LIBRARY_PATH)'/$(STATICLIB)

clean:
	-$(RM) $(STATICLIB)
	-$(RM) $(SHAREDLIB)
	-$(RM) $(IMPLIB)
	-$(RM) *.o
	-$(RM) *.exe
	-$(RM) foo.gz

adler32.o: zlib.h zconf.h
compress.o: zlib.h zconf.h
crc32.o: crc32.h zlib.h zconf.h
deflate.o: deflate.h zutil.h zlib.h zconf.h
gzclose.o: zlib.h zconf.h gzguts.h
gzlib.o: zlib.h zconf.h gzguts.h
gzread.o: zlib.h zconf.h gzguts.h
gzwrite.o: zlib.h zconf.h gzguts.h
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
uncompr.o: zlib.h zconf.h
zutil.o: zutil.h zlib.h zconf.h
Added compat/zlib/win32/Makefile.msc.































































































































































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# Makefile for zlib using Microsoft (Visual) C
# zlib is copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
#
# Usage:
#   nmake -f win32/Makefile.msc                          (standard build)
#   nmake -f win32/Makefile.msc LOC=-DFOO                (nonstandard build)

# The toplevel directory of the source tree.
#
TOP = .

# optional build flags
LOC =

# variables
STATICLIB = zlib.lib
SHAREDLIB = zlib1.dll
IMPLIB    = zdll.lib

CC = cl
AS = ml
LD = link
AR = lib
RC = rc
CFLAGS  = -nologo -MT -W3 -O2 -Oy- -Zi -Fd"zlib" $(LOC)
WFLAGS  = -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE
ASFLAGS = -coff -Zi $(LOC)
LDFLAGS = -nologo -debug -incremental:no -opt:ref
ARFLAGS = -nologo
RCFLAGS = /dWIN32 /r

OBJS = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj \
       gzwrite.obj infback.obj inflate.obj inftrees.obj inffast.obj trees.obj uncompr.obj zutil.obj
OBJA =


# targets
all: $(STATICLIB) $(SHAREDLIB) $(IMPLIB) \
     example.exe minigzip.exe example_d.exe minigzip_d.exe

$(STATICLIB): $(OBJS) $(OBJA)
	$(AR) $(ARFLAGS) -out:$@ $(OBJS) $(OBJA)

$(IMPLIB): $(SHAREDLIB)

$(SHAREDLIB): $(TOP)/win32/zlib.def $(OBJS) $(OBJA) zlib1.res
	$(LD) $(LDFLAGS) -def:$(TOP)/win32/zlib.def -dll -implib:$(IMPLIB) \
	  -out:$@ -base:0x5A4C0000 $(OBJS) $(OBJA) zlib1.res
	if exist $@.manifest \
	  mt -nologo -manifest $@.manifest -outputresource:$@;2

example.exe: example.obj $(STATICLIB)
	$(LD) $(LDFLAGS) example.obj $(STATICLIB)
	if exist $@.manifest \
	  mt -nologo -manifest $@.manifest -outputresource:$@;1

minigzip.exe: minigzip.obj $(STATICLIB)
	$(LD) $(LDFLAGS) minigzip.obj $(STATICLIB)
	if exist $@.manifest \
	  mt -nologo -manifest $@.manifest -outputresource:$@;1

example_d.exe: example.obj $(IMPLIB)
	$(LD) $(LDFLAGS) -out:$@ example.obj $(IMPLIB)
	if exist $@.manifest \
	  mt -nologo -manifest $@.manifest -outputresource:$@;1

minigzip_d.exe: minigzip.obj $(IMPLIB)
	$(LD) $(LDFLAGS) -out:$@ minigzip.obj $(IMPLIB)
	if exist $@.manifest \
	  mt -nologo -manifest $@.manifest -outputresource:$@;1

{$(TOP)}.c.obj:
	$(CC) -c $(WFLAGS) $(CFLAGS) $<

{$(TOP)/test}.c.obj:
	$(CC) -c -I$(TOP) $(WFLAGS) $(CFLAGS) $<

{$(TOP)/contrib/masmx64}.c.obj:
	$(CC) -c $(WFLAGS) $(CFLAGS) $<

{$(TOP)/contrib/masmx64}.asm.obj:
	$(AS) -c $(ASFLAGS) $<

{$(TOP)/contrib/masmx86}.asm.obj:
	$(AS) -c $(ASFLAGS) $<

adler32.obj: $(TOP)/adler32.c $(TOP)/zlib.h $(TOP)/zconf.h

compress.obj: $(TOP)/compress.c $(TOP)/zlib.h $(TOP)/zconf.h

crc32.obj: $(TOP)/crc32.c $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/crc32.h

deflate.obj: $(TOP)/deflate.c $(TOP)/deflate.h $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h

gzclose.obj: $(TOP)/gzclose.c $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/gzguts.h

gzlib.obj: $(TOP)/gzlib.c $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/gzguts.h

gzread.obj: $(TOP)/gzread.c $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/gzguts.h

gzwrite.obj: $(TOP)/gzwrite.c $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/gzguts.h

infback.obj: $(TOP)/infback.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/inftrees.h $(TOP)/inflate.h \
             $(TOP)/inffast.h $(TOP)/inffixed.h

inffast.obj: $(TOP)/inffast.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/inftrees.h $(TOP)/inflate.h \
             $(TOP)/inffast.h

inflate.obj: $(TOP)/inflate.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/inftrees.h $(TOP)/inflate.h \
             $(TOP)/inffast.h $(TOP)/inffixed.h

inftrees.obj: $(TOP)/inftrees.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/inftrees.h

trees.obj: $(TOP)/trees.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h $(TOP)/deflate.h $(TOP)/trees.h

uncompr.obj: $(TOP)/uncompr.c $(TOP)/zlib.h $(TOP)/zconf.h

zutil.obj: $(TOP)/zutil.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h

gvmat64.obj: $(TOP)/contrib\masmx64\gvmat64.asm

inffasx64.obj: $(TOP)/contrib\masmx64\inffasx64.asm

inffas8664.obj: $(TOP)/contrib\masmx64\inffas8664.c $(TOP)/zutil.h $(TOP)/zlib.h $(TOP)/zconf.h \
		$(TOP)/inftrees.h $(TOP)/inflate.h $(TOP)/inffast.h

inffas32.obj: $(TOP)/contrib\masmx86\inffas32.asm

match686.obj: $(TOP)/contrib\masmx86\match686.asm

example.obj: $(TOP)/test/example.c $(TOP)/zlib.h $(TOP)/zconf.h

minigzip.obj: $(TOP)/test/minigzip.c $(TOP)/zlib.h $(TOP)/zconf.h

zlib1.res: $(TOP)/win32/zlib1.rc
	$(RC) $(RCFLAGS) /fo$@ $(TOP)/win32/zlib1.rc

# testing
test: example.exe minigzip.exe
	example
	echo hello world | minigzip | minigzip -d

testdll: example_d.exe minigzip_d.exe
	example_d
	echo hello world | minigzip_d | minigzip_d -d


# cleanup
clean:
	-del $(STATICLIB)
	-del $(SHAREDLIB)
	-del $(IMPLIB)
	-del *.obj
	-del *.res
	-del *.exp
	-del *.exe
	-del *.pdb
	-del *.manifest
	-del foo.gz
Added compat/zlib/win32/README-WIN32.txt.







































































































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ZLIB DATA COMPRESSION LIBRARY

zlib 1.3.1 is a general purpose data compression library.  All the code is
thread safe.  The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
and rfc1952.txt (gzip format).

All functions of the compression library are documented in the file zlib.h
(volunteer to write man pages welcome, contact zlib@gzip.org).  Two compiled
examples are distributed in this package, example and minigzip.  The example_d
and minigzip_d flavors validate that the zlib1.dll file is working correctly.

Questions about zlib should be sent to <zlib@gzip.org>.  The zlib home page
is http://zlib.net/ .  Before reporting a problem, please check this site to
verify that you have the latest version of zlib; otherwise get the latest
version and check whether the problem still exists or not.

PLEASE read DLL_FAQ.txt, and the zlib FAQ http://zlib.net/zlib_faq.html before
asking for help.


Manifest:

The package zlib-1.3.1-win32-x86.zip will contain the following files:

  README-WIN32.txt This document
  ChangeLog        Changes since previous zlib packages
  DLL_FAQ.txt      Frequently asked questions about zlib1.dll
  zlib.3.pdf       Documentation of this library in Adobe Acrobat format

  example.exe      A statically-bound example (using zlib.lib, not the dll)
  example.pdb      Symbolic information for debugging example.exe

  example_d.exe    A zlib1.dll bound example (using zdll.lib)
  example_d.pdb    Symbolic information for debugging example_d.exe

  minigzip.exe     A statically-bound test program (using zlib.lib, not the dll)
  minigzip.pdb     Symbolic information for debugging minigzip.exe

  minigzip_d.exe   A zlib1.dll bound test program (using zdll.lib)
  minigzip_d.pdb   Symbolic information for debugging minigzip_d.exe

  zlib.h           Install these files into the compilers' INCLUDE path to
  zconf.h          compile programs which use zlib.lib or zdll.lib

  zdll.lib         Install these files into the compilers' LIB path if linking
  zdll.exp         a compiled program to the zlib1.dll binary

  zlib.lib         Install these files into the compilers' LIB path to link zlib
  zlib.pdb         into compiled programs, without zlib1.dll runtime dependency
                   (zlib.pdb provides debugging info to the compile time linker)

  zlib1.dll        Install this binary shared library into the system PATH, or
                   the program's runtime directory (where the .exe resides)
  zlib1.pdb        Install in the same directory as zlib1.dll, in order to debug
                   an application crash using WinDbg or similar tools.

All .pdb files above are entirely optional, but are very useful to a developer
attempting to diagnose program misbehavior or a crash.  Many additional
important files for developers can be found in the zlib127.zip source package
available from http://zlib.net/ - review that package's README file for details.


Acknowledgments:

The deflate format used by zlib was defined by Phil Katz.  The deflate and
zlib specifications were written by L.  Peter Deutsch.  Thanks to all the
people who reported problems and suggested various improvements in zlib; they
are too numerous to cite here.


Copyright notice:

  (C) 1995-2017 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu

If you use the zlib library in a product, we would appreciate *not* receiving
lengthy legal documents to sign.  The sources are provided for free but without
warranty of any kind.  The library has been entirely written by Jean-loup
Gailly and Mark Adler; it does not include third-party code.

If you redistribute modified sources, we would appreciate that you include in
the file ChangeLog history information documenting your changes.  Please read
the FAQ for more information on the distribution of modified source versions.
Added compat/zlib/win32/VisualC.txt.



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To build zlib using the Microsoft Visual C++ environment,
use the appropriate project from the contrib/vstudio/ directory.
Added compat/zlib/win32/zlib.def.

































































































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; zlib data compression library
EXPORTS
; basic functions
    zlibVersion
    deflate
    deflateEnd
    inflate
    inflateEnd
; advanced functions
    deflateSetDictionary
    deflateGetDictionary
    deflateCopy
    deflateReset
    deflateParams
    deflateTune
    deflateBound
    deflatePending
    deflatePrime
    deflateSetHeader
    inflateSetDictionary
    inflateGetDictionary
    inflateSync
    inflateCopy
    inflateReset
    inflateReset2
    inflatePrime
    inflateMark
    inflateGetHeader
    inflateBack
    inflateBackEnd
    zlibCompileFlags
; utility functions
    compress
    compress2
    compressBound
    uncompress
    uncompress2
    gzopen
    gzdopen
    gzbuffer
    gzsetparams
    gzread
    gzfread
    gzwrite
    gzfwrite
    gzprintf
    gzvprintf
    gzputs
    gzgets
    gzputc
    gzgetc
    gzungetc
    gzflush
    gzseek
    gzrewind
    gztell
    gzoffset
    gzeof
    gzdirect
    gzclose
    gzclose_r
    gzclose_w
    gzerror
    gzclearerr
; large file functions
    gzopen64
    gzseek64
    gztell64
    gzoffset64
    adler32_combine64
    crc32_combine64
    crc32_combine_gen64
; checksum functions
    adler32
    adler32_z
    crc32
    crc32_z
    adler32_combine
    crc32_combine
    crc32_combine_gen
    crc32_combine_op
; various hacks, don't look :)
    deflateInit_
    deflateInit2_
    inflateInit_
    inflateInit2_
    inflateBackInit_
    gzgetc_
    zError
    inflateSyncPoint
    get_crc_table
    inflateUndermine
    inflateValidate
    inflateCodesUsed
    inflateResetKeep
    deflateResetKeep
    gzopen_w
Added compat/zlib/win32/zlib1.rc.








































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#include <winver.h>
#include "../zlib.h"

#ifdef GCC_WINDRES
VS_VERSION_INFO		VERSIONINFO
#else
VS_VERSION_INFO		VERSIONINFO	MOVEABLE IMPURE LOADONCALL DISCARDABLE
#endif
  FILEVERSION		ZLIB_VER_MAJOR,ZLIB_VER_MINOR,ZLIB_VER_REVISION,0
  PRODUCTVERSION	ZLIB_VER_MAJOR,ZLIB_VER_MINOR,ZLIB_VER_REVISION,0
  FILEFLAGSMASK		VS_FFI_FILEFLAGSMASK
#ifdef _DEBUG
  FILEFLAGS		1
#else
  FILEFLAGS		0
#endif
  FILEOS		VOS__WINDOWS32
  FILETYPE		VFT_DLL
  FILESUBTYPE		0	// not used
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904E4"
    //language ID = U.S. English, char set = Windows, Multilingual
    BEGIN
      VALUE "FileDescription",	"zlib data compression library\0"
      VALUE "FileVersion",	ZLIB_VERSION "\0"
      VALUE "InternalName",	"zlib1.dll\0"
      VALUE "LegalCopyright",	"(C) 1995-2022 Jean-loup Gailly & Mark Adler\0"
      VALUE "OriginalFilename",	"zlib1.dll\0"
      VALUE "ProductName",	"zlib\0"
      VALUE "ProductVersion",	ZLIB_VERSION "\0"
      VALUE "Comments",		"For more information visit http://www.zlib.net/\0"
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x0409, 1252
  END
END
Added compat/zlib/zconf.h.































































































































































































































































































































































































































































































































































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/* zconf.h -- configuration of the zlib compression library
 * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#ifndef ZCONF_H
#define ZCONF_H

/*
 * If you *really* need a unique prefix for all types and library functions,
 * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
 * Even better than compiling with -DZ_PREFIX would be to use configure to set
 * this permanently in zconf.h using "./configure --zprefix".
 */
#ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
#  define Z_PREFIX_SET

/* all linked symbols and init macros */
#  define _dist_code            z__dist_code
#  define _length_code          z__length_code
#  define _tr_align             z__tr_align
#  define _tr_flush_bits        z__tr_flush_bits
#  define _tr_flush_block       z__tr_flush_block
#  define _tr_init              z__tr_init
#  define _tr_stored_block      z__tr_stored_block
#  define _tr_tally             z__tr_tally
#  define adler32               z_adler32
#  define adler32_combine       z_adler32_combine
#  define adler32_combine64     z_adler32_combine64
#  define adler32_z             z_adler32_z
#  ifndef Z_SOLO
#    define compress              z_compress
#    define compress2             z_compress2
#    define compressBound         z_compressBound
#  endif
#  define crc32                 z_crc32
#  define crc32_combine         z_crc32_combine
#  define crc32_combine64       z_crc32_combine64
#  define crc32_combine_gen     z_crc32_combine_gen
#  define crc32_combine_gen64   z_crc32_combine_gen64
#  define crc32_combine_op      z_crc32_combine_op
#  define crc32_z               z_crc32_z
#  define deflate               z_deflate
#  define deflateBound          z_deflateBound
#  define deflateCopy           z_deflateCopy
#  define deflateEnd            z_deflateEnd
#  define deflateGetDictionary  z_deflateGetDictionary
#  define deflateInit           z_deflateInit
#  define deflateInit2          z_deflateInit2
#  define deflateInit2_         z_deflateInit2_
#  define deflateInit_          z_deflateInit_
#  define deflateParams         z_deflateParams
#  define deflatePending        z_deflatePending
#  define deflatePrime          z_deflatePrime
#  define deflateReset          z_deflateReset
#  define deflateResetKeep      z_deflateResetKeep
#  define deflateSetDictionary  z_deflateSetDictionary
#  define deflateSetHeader      z_deflateSetHeader
#  define deflateTune           z_deflateTune
#  define deflate_copyright     z_deflate_copyright
#  define get_crc_table         z_get_crc_table
#  ifndef Z_SOLO
#    define gz_error              z_gz_error
#    define gz_intmax             z_gz_intmax
#    define gz_strwinerror        z_gz_strwinerror
#    define gzbuffer              z_gzbuffer
#    define gzclearerr            z_gzclearerr
#    define gzclose               z_gzclose
#    define gzclose_r             z_gzclose_r
#    define gzclose_w             z_gzclose_w
#    define gzdirect              z_gzdirect
#    define gzdopen               z_gzdopen
#    define gzeof                 z_gzeof
#    define gzerror               z_gzerror
#    define gzflush               z_gzflush
#    define gzfread               z_gzfread
#    define gzfwrite              z_gzfwrite
#    define gzgetc                z_gzgetc
#    define gzgetc_               z_gzgetc_
#    define gzgets                z_gzgets
#    define gzoffset              z_gzoffset
#    define gzoffset64            z_gzoffset64
#    define gzopen                z_gzopen
#    define gzopen64              z_gzopen64
#    ifdef _WIN32
#      define gzopen_w              z_gzopen_w
#    endif
#    define gzprintf              z_gzprintf
#    define gzputc                z_gzputc
#    define gzputs                z_gzputs
#    define gzread                z_gzread
#    define gzrewind              z_gzrewind
#    define gzseek                z_gzseek
#    define gzseek64              z_gzseek64
#    define gzsetparams           z_gzsetparams
#    define gztell                z_gztell
#    define gztell64              z_gztell64
#    define gzungetc              z_gzungetc
#    define gzvprintf             z_gzvprintf
#    define gzwrite               z_gzwrite
#  endif
#  define inflate               z_inflate
#  define inflateBack           z_inflateBack
#  define inflateBackEnd        z_inflateBackEnd
#  define inflateBackInit       z_inflateBackInit
#  define inflateBackInit_      z_inflateBackInit_
#  define inflateCodesUsed      z_inflateCodesUsed
#  define inflateCopy           z_inflateCopy
#  define inflateEnd            z_inflateEnd
#  define inflateGetDictionary  z_inflateGetDictionary
#  define inflateGetHeader      z_inflateGetHeader
#  define inflateInit           z_inflateInit
#  define inflateInit2          z_inflateInit2
#  define inflateInit2_         z_inflateInit2_
#  define inflateInit_          z_inflateInit_
#  define inflateMark           z_inflateMark
#  define inflatePrime          z_inflatePrime
#  define inflateReset          z_inflateReset
#  define inflateReset2         z_inflateReset2
#  define inflateResetKeep      z_inflateResetKeep
#  define inflateSetDictionary  z_inflateSetDictionary
#  define inflateSync           z_inflateSync
#  define inflateSyncPoint      z_inflateSyncPoint
#  define inflateUndermine      z_inflateUndermine
#  define inflateValidate       z_inflateValidate
#  define inflate_copyright     z_inflate_copyright
#  define inflate_fast          z_inflate_fast
#  define inflate_table         z_inflate_table
#  ifndef Z_SOLO
#    define uncompress            z_uncompress
#    define uncompress2           z_uncompress2
#  endif
#  define zError                z_zError
#  ifndef Z_SOLO
#    define zcalloc               z_zcalloc
#    define zcfree                z_zcfree
#  endif
#  define zlibCompileFlags      z_zlibCompileFlags
#  define zlibVersion           z_zlibVersion

/* all zlib typedefs in zlib.h and zconf.h */
#  define Byte                  z_Byte
#  define Bytef                 z_Bytef
#  define alloc_func            z_alloc_func
#  define charf                 z_charf
#  define free_func             z_free_func
#  ifndef Z_SOLO
#    define gzFile                z_gzFile
#  endif
#  define gz_header             z_gz_header
#  define gz_headerp            z_gz_headerp
#  define in_func               z_in_func
#  define intf                  z_intf
#  define out_func              z_out_func
#  define uInt                  z_uInt
#  define uIntf                 z_uIntf
#  define uLong                 z_uLong
#  define uLongf                z_uLongf
#  define voidp                 z_voidp
#  define voidpc                z_voidpc
#  define voidpf                z_voidpf

/* all zlib structs in zlib.h and zconf.h */
#  define gz_header_s           z_gz_header_s
#  define internal_state        z_internal_state

#endif

#if defined(__MSDOS__) && !defined(MSDOS)
#  define MSDOS
#endif
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
#  define OS2
#endif
#if defined(_WINDOWS) && !defined(WINDOWS)
#  define WINDOWS
#endif
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
#  ifndef WIN32
#    define WIN32
#  endif
#endif
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
#    ifndef SYS16BIT
#      define SYS16BIT
#    endif
#  endif
#endif

/*
 * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
 * than 64k bytes at a time (needed on systems with 16-bit int).
 */
#ifdef SYS16BIT
#  define MAXSEG_64K
#endif
#ifdef MSDOS
#  define UNALIGNED_OK
#endif

#ifdef __STDC_VERSION__
#  ifndef STDC
#    define STDC
#  endif
#  if __STDC_VERSION__ >= 199901L
#    ifndef STDC99
#      define STDC99
#    endif
#  endif
#endif
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
#  define STDC
#endif
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
#  define STDC
#endif
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
#  define STDC
#endif
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
#  define STDC
#endif

#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
#  define STDC
#endif

#ifndef STDC
#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
#    define const       /* note: need a more gentle solution here */
#  endif
#endif

#if defined(ZLIB_CONST) && !defined(z_const)
#  define z_const const
#else
#  define z_const
#endif

#ifdef Z_SOLO
#  ifdef _WIN64
     typedef unsigned long long z_size_t;
#  else
     typedef unsigned long z_size_t;
#  endif
#else
#  define z_longlong long long
#  if defined(NO_SIZE_T)
     typedef unsigned NO_SIZE_T z_size_t;
#  elif defined(STDC)
#    include <stddef.h>
     typedef size_t z_size_t;
#  else
     typedef unsigned long z_size_t;
#  endif
#  undef z_longlong
#endif

/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
#  ifdef MAXSEG_64K
#    define MAX_MEM_LEVEL 8
#  else
#    define MAX_MEM_LEVEL 9
#  endif
#endif

/* Maximum value for windowBits in deflateInit2 and inflateInit2.
 * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
 * created by gzip. (Files created by minigzip can still be extracted by
 * gzip.)
 */
#ifndef MAX_WBITS
#  define MAX_WBITS   15 /* 32K LZ77 window */
#endif

/* The memory requirements for deflate are (in bytes):
            (1 << (windowBits+2)) +  (1 << (memLevel+9))
 that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
 plus a few kilobytes for small objects. For example, if you want to reduce
 the default memory requirements from 256K to 128K, compile with
     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
 Of course this will generally degrade compression (there's no free lunch).

   The memory requirements for inflate are (in bytes) 1 << windowBits
 that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
 for small objects.
*/

                        /* Type declarations */

#ifndef OF /* function prototypes */
#  ifdef STDC
#    define OF(args)  args
#  else
#    define OF(args)  ()
#  endif
#endif

/* The following definitions for FAR are needed only for MSDOS mixed
 * model programming (small or medium model with some far allocations).
 * This was tested only with MSC; for other MSDOS compilers you may have
 * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
 * just define FAR to be empty.
 */
#ifdef SYS16BIT
#  if defined(M_I86SM) || defined(M_I86MM)
     /* MSC small or medium model */
#    define SMALL_MEDIUM
#    ifdef _MSC_VER
#      define FAR _far
#    else
#      define FAR far
#    endif
#  endif
#  if (defined(__SMALL__) || defined(__MEDIUM__))
     /* Turbo C small or medium model */
#    define SMALL_MEDIUM
#    ifdef __BORLANDC__
#      define FAR _far
#    else
#      define FAR far
#    endif
#  endif
#endif

#if defined(WINDOWS) || defined(WIN32)
   /* If building or using zlib as a DLL, define ZLIB_DLL.
    * This is not mandatory, but it offers a little performance increase.
    */
#  ifdef ZLIB_DLL
#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
#      ifdef ZLIB_INTERNAL
#        define ZEXTERN extern __declspec(dllexport)
#      else
#        define ZEXTERN extern __declspec(dllimport)
#      endif
#    endif
#  endif  /* ZLIB_DLL */
   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
    * define ZLIB_WINAPI.
    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
    */
#  ifdef ZLIB_WINAPI
#    ifdef FAR
#      undef FAR
#    endif
#    ifndef WIN32_LEAN_AND_MEAN
#      define WIN32_LEAN_AND_MEAN
#    endif
#    include <windows.h>
     /* No need for _export, use ZLIB.DEF instead. */
     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
#    define ZEXPORT WINAPI
#    ifdef WIN32
#      define ZEXPORTVA WINAPIV
#    else
#      define ZEXPORTVA FAR CDECL
#    endif
#  endif
#endif

#if defined (__BEOS__)
#  ifdef ZLIB_DLL
#    ifdef ZLIB_INTERNAL
#      define ZEXPORT   __declspec(dllexport)
#      define ZEXPORTVA __declspec(dllexport)
#    else
#      define ZEXPORT   __declspec(dllimport)
#      define ZEXPORTVA __declspec(dllimport)
#    endif
#  endif
#endif

#ifndef ZEXTERN
#  define ZEXTERN extern
#endif
#ifndef ZEXPORT
#  define ZEXPORT
#endif
#ifndef ZEXPORTVA
#  define ZEXPORTVA
#endif

#ifndef FAR
#  define FAR
#endif

#if !defined(__MACTYPES__)
typedef unsigned char  Byte;  /* 8 bits */
#endif
typedef unsigned int   uInt;  /* 16 bits or more */
typedef unsigned long  uLong; /* 32 bits or more */

#ifdef SMALL_MEDIUM
   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
#  define Bytef Byte FAR
#else
   typedef Byte  FAR Bytef;
#endif
typedef char  FAR charf;
typedef int   FAR intf;
typedef uInt  FAR uIntf;
typedef uLong FAR uLongf;

#ifdef STDC
   typedef void const *voidpc;
   typedef void FAR   *voidpf;
   typedef void       *voidp;
#else
   typedef Byte const *voidpc;
   typedef Byte FAR   *voidpf;
   typedef Byte       *voidp;
#endif

#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
#  include <limits.h>
#  if (UINT_MAX == 0xffffffffUL)
#    define Z_U4 unsigned
#  elif (ULONG_MAX == 0xffffffffUL)
#    define Z_U4 unsigned long
#  elif (USHRT_MAX == 0xffffffffUL)
#    define Z_U4 unsigned short
#  endif
#endif

#ifdef Z_U4
   typedef Z_U4 z_crc_t;
#else
   typedef unsigned long z_crc_t;
#endif

#ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
#  define Z_HAVE_UNISTD_H
#endif

#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
#  define Z_HAVE_STDARG_H
#endif

#ifdef STDC
#  ifndef Z_SOLO
#    include <sys/types.h>      /* for off_t */
#  endif
#endif

#if defined(STDC) || defined(Z_HAVE_STDARG_H)
#  ifndef Z_SOLO
#    include <stdarg.h>         /* for va_list */
#  endif
#endif

#ifdef _WIN32
#  ifndef Z_SOLO
#    include <stddef.h>         /* for wchar_t */
#  endif
#endif

/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
 * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
 * though the former does not conform to the LFS document), but considering
 * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
 * equivalently requesting no 64-bit operations
 */
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
#  undef _LARGEFILE64_SOURCE
#endif

#ifndef Z_HAVE_UNISTD_H
#  ifdef __WATCOMC__
#    define Z_HAVE_UNISTD_H
#  endif
#endif
#ifndef Z_HAVE_UNISTD_H
#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
#    define Z_HAVE_UNISTD_H
#  endif
#endif
#ifndef Z_SOLO
#  if defined(Z_HAVE_UNISTD_H)
#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
#    ifdef VMS
#      include <unixio.h>       /* for off_t */
#    endif
#    ifndef z_off_t
#      define z_off_t off_t
#    endif
#  endif
#endif

#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
#  define Z_LFS64
#endif

#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
#  define Z_LARGE64
#endif

#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
#  define Z_WANT64
#endif

#if !defined(SEEK_SET) && !defined(Z_SOLO)
#  define SEEK_SET        0       /* Seek from beginning of file.  */
#  define SEEK_CUR        1       /* Seek from current position.  */
#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
#endif

#ifndef z_off_t
#  define z_off_t long
#endif

#if !defined(_WIN32) && defined(Z_LARGE64)
#  define z_off64_t off64_t
#else
#  if defined(_WIN32) && !defined(__GNUC__)
#    define z_off64_t __int64
#  else
#    define z_off64_t z_off_t
#  endif
#endif

/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
  #pragma map(deflateInit_,"DEIN")
  #pragma map(deflateInit2_,"DEIN2")
  #pragma map(deflateEnd,"DEEND")
  #pragma map(deflateBound,"DEBND")
  #pragma map(inflateInit_,"ININ")
  #pragma map(inflateInit2_,"ININ2")
  #pragma map(inflateEnd,"INEND")
  #pragma map(inflateSync,"INSY")
  #pragma map(inflateSetDictionary,"INSEDI")
  #pragma map(compressBound,"CMBND")
  #pragma map(inflate_table,"INTABL")
  #pragma map(inflate_fast,"INFA")
  #pragma map(inflate_copyright,"INCOPY")
#endif

#endif /* ZCONF_H */
Added compat/zlib/zconf.h.cmakein.

































































































































































































































































































































































































































































































































































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/* zconf.h -- configuration of the zlib compression library
 * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#ifndef ZCONF_H
#define ZCONF_H
#cmakedefine Z_PREFIX
#cmakedefine Z_HAVE_UNISTD_H

/*
 * If you *really* need a unique prefix for all types and library functions,
 * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
 * Even better than compiling with -DZ_PREFIX would be to use configure to set
 * this permanently in zconf.h using "./configure --zprefix".
 */
#ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
#  define Z_PREFIX_SET

/* all linked symbols and init macros */
#  define _dist_code            z__dist_code
#  define _length_code          z__length_code
#  define _tr_align             z__tr_align
#  define _tr_flush_bits        z__tr_flush_bits
#  define _tr_flush_block       z__tr_flush_block
#  define _tr_init              z__tr_init
#  define _tr_stored_block      z__tr_stored_block
#  define _tr_tally             z__tr_tally
#  define adler32               z_adler32
#  define adler32_combine       z_adler32_combine
#  define adler32_combine64     z_adler32_combine64
#  define adler32_z             z_adler32_z
#  ifndef Z_SOLO
#    define compress              z_compress
#    define compress2             z_compress2
#    define compressBound         z_compressBound
#  endif
#  define crc32                 z_crc32
#  define crc32_combine         z_crc32_combine
#  define crc32_combine64       z_crc32_combine64
#  define crc32_combine_gen     z_crc32_combine_gen
#  define crc32_combine_gen64   z_crc32_combine_gen64
#  define crc32_combine_op      z_crc32_combine_op
#  define crc32_z               z_crc32_z
#  define deflate               z_deflate
#  define deflateBound          z_deflateBound
#  define deflateCopy           z_deflateCopy
#  define deflateEnd            z_deflateEnd
#  define deflateGetDictionary  z_deflateGetDictionary
#  define deflateInit           z_deflateInit
#  define deflateInit2          z_deflateInit2
#  define deflateInit2_         z_deflateInit2_
#  define deflateInit_          z_deflateInit_
#  define deflateParams         z_deflateParams
#  define deflatePending        z_deflatePending
#  define deflatePrime          z_deflatePrime
#  define deflateReset          z_deflateReset
#  define deflateResetKeep      z_deflateResetKeep
#  define deflateSetDictionary  z_deflateSetDictionary
#  define deflateSetHeader      z_deflateSetHeader
#  define deflateTune           z_deflateTune
#  define deflate_copyright     z_deflate_copyright
#  define get_crc_table         z_get_crc_table
#  ifndef Z_SOLO
#    define gz_error              z_gz_error
#    define gz_intmax             z_gz_intmax
#    define gz_strwinerror        z_gz_strwinerror
#    define gzbuffer              z_gzbuffer
#    define gzclearerr            z_gzclearerr
#    define gzclose               z_gzclose
#    define gzclose_r             z_gzclose_r
#    define gzclose_w             z_gzclose_w
#    define gzdirect              z_gzdirect
#    define gzdopen               z_gzdopen
#    define gzeof                 z_gzeof
#    define gzerror               z_gzerror
#    define gzflush               z_gzflush
#    define gzfread               z_gzfread
#    define gzfwrite              z_gzfwrite
#    define gzgetc                z_gzgetc
#    define gzgetc_               z_gzgetc_
#    define gzgets                z_gzgets
#    define gzoffset              z_gzoffset
#    define gzoffset64            z_gzoffset64
#    define gzopen                z_gzopen
#    define gzopen64              z_gzopen64
#    ifdef _WIN32
#      define gzopen_w              z_gzopen_w
#    endif
#    define gzprintf              z_gzprintf
#    define gzputc                z_gzputc
#    define gzputs                z_gzputs
#    define gzread                z_gzread
#    define gzrewind              z_gzrewind
#    define gzseek                z_gzseek
#    define gzseek64              z_gzseek64
#    define gzsetparams           z_gzsetparams
#    define gztell                z_gztell
#    define gztell64              z_gztell64
#    define gzungetc              z_gzungetc
#    define gzvprintf             z_gzvprintf
#    define gzwrite               z_gzwrite
#  endif
#  define inflate               z_inflate
#  define inflateBack           z_inflateBack
#  define inflateBackEnd        z_inflateBackEnd
#  define inflateBackInit       z_inflateBackInit
#  define inflateBackInit_      z_inflateBackInit_
#  define inflateCodesUsed      z_inflateCodesUsed
#  define inflateCopy           z_inflateCopy
#  define inflateEnd            z_inflateEnd
#  define inflateGetDictionary  z_inflateGetDictionary
#  define inflateGetHeader      z_inflateGetHeader
#  define inflateInit           z_inflateInit
#  define inflateInit2          z_inflateInit2
#  define inflateInit2_         z_inflateInit2_
#  define inflateInit_          z_inflateInit_
#  define inflateMark           z_inflateMark
#  define inflatePrime          z_inflatePrime
#  define inflateReset          z_inflateReset
#  define inflateReset2         z_inflateReset2
#  define inflateResetKeep      z_inflateResetKeep
#  define inflateSetDictionary  z_inflateSetDictionary
#  define inflateSync           z_inflateSync
#  define inflateSyncPoint      z_inflateSyncPoint
#  define inflateUndermine      z_inflateUndermine
#  define inflateValidate       z_inflateValidate
#  define inflate_copyright     z_inflate_copyright
#  define inflate_fast          z_inflate_fast
#  define inflate_table         z_inflate_table
#  ifndef Z_SOLO
#    define uncompress            z_uncompress
#    define uncompress2           z_uncompress2
#  endif
#  define zError                z_zError
#  ifndef Z_SOLO
#    define zcalloc               z_zcalloc
#    define zcfree                z_zcfree
#  endif
#  define zlibCompileFlags      z_zlibCompileFlags
#  define zlibVersion           z_zlibVersion

/* all zlib typedefs in zlib.h and zconf.h */
#  define Byte                  z_Byte
#  define Bytef                 z_Bytef
#  define alloc_func            z_alloc_func
#  define charf                 z_charf
#  define free_func             z_free_func
#  ifndef Z_SOLO
#    define gzFile                z_gzFile
#  endif
#  define gz_header             z_gz_header
#  define gz_headerp            z_gz_headerp
#  define in_func               z_in_func
#  define intf                  z_intf
#  define out_func              z_out_func
#  define uInt                  z_uInt
#  define uIntf                 z_uIntf
#  define uLong                 z_uLong
#  define uLongf                z_uLongf
#  define voidp                 z_voidp
#  define voidpc                z_voidpc
#  define voidpf                z_voidpf

/* all zlib structs in zlib.h and zconf.h */
#  define gz_header_s           z_gz_header_s
#  define internal_state        z_internal_state

#endif

#if defined(__MSDOS__) && !defined(MSDOS)
#  define MSDOS
#endif
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
#  define OS2
#endif
#if defined(_WINDOWS) && !defined(WINDOWS)
#  define WINDOWS
#endif
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
#  ifndef WIN32
#    define WIN32
#  endif
#endif
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
#    ifndef SYS16BIT
#      define SYS16BIT
#    endif
#  endif
#endif

/*
 * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
 * than 64k bytes at a time (needed on systems with 16-bit int).
 */
#ifdef SYS16BIT
#  define MAXSEG_64K
#endif
#ifdef MSDOS
#  define UNALIGNED_OK
#endif

#ifdef __STDC_VERSION__
#  ifndef STDC
#    define STDC
#  endif
#  if __STDC_VERSION__ >= 199901L
#    ifndef STDC99
#      define STDC99
#    endif
#  endif
#endif
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
#  define STDC
#endif
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
#  define STDC
#endif
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
#  define STDC
#endif
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
#  define STDC
#endif

#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
#  define STDC
#endif

#ifndef STDC
#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
#    define const       /* note: need a more gentle solution here */
#  endif
#endif

#if defined(ZLIB_CONST) && !defined(z_const)
#  define z_const const
#else
#  define z_const
#endif

#ifdef Z_SOLO
#  ifdef _WIN64
     typedef unsigned long long z_size_t;
#  else
     typedef unsigned long z_size_t;
#  endif
#else
#  define z_longlong long long
#  if defined(NO_SIZE_T)
     typedef unsigned NO_SIZE_T z_size_t;
#  elif defined(STDC)
#    include <stddef.h>
     typedef size_t z_size_t;
#  else
     typedef unsigned long z_size_t;
#  endif
#  undef z_longlong
#endif

/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
#  ifdef MAXSEG_64K
#    define MAX_MEM_LEVEL 8
#  else
#    define MAX_MEM_LEVEL 9
#  endif
#endif

/* Maximum value for windowBits in deflateInit2 and inflateInit2.
 * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
 * created by gzip. (Files created by minigzip can still be extracted by
 * gzip.)
 */
#ifndef MAX_WBITS
#  define MAX_WBITS   15 /* 32K LZ77 window */
#endif

/* The memory requirements for deflate are (in bytes):
            (1 << (windowBits+2)) +  (1 << (memLevel+9))
 that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
 plus a few kilobytes for small objects. For example, if you want to reduce
 the default memory requirements from 256K to 128K, compile with
     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
 Of course this will generally degrade compression (there's no free lunch).

   The memory requirements for inflate are (in bytes) 1 << windowBits
 that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
 for small objects.
*/

                        /* Type declarations */

#ifndef OF /* function prototypes */
#  ifdef STDC
#    define OF(args)  args
#  else
#    define OF(args)  ()
#  endif
#endif

/* The following definitions for FAR are needed only for MSDOS mixed
 * model programming (small or medium model with some far allocations).
 * This was tested only with MSC; for other MSDOS compilers you may have
 * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
 * just define FAR to be empty.
 */
#ifdef SYS16BIT
#  if defined(M_I86SM) || defined(M_I86MM)
     /* MSC small or medium model */
#    define SMALL_MEDIUM
#    ifdef _MSC_VER
#      define FAR _far
#    else
#      define FAR far
#    endif
#  endif
#  if (defined(__SMALL__) || defined(__MEDIUM__))
     /* Turbo C small or medium model */
#    define SMALL_MEDIUM
#    ifdef __BORLANDC__
#      define FAR _far
#    else
#      define FAR far
#    endif
#  endif
#endif

#if defined(WINDOWS) || defined(WIN32)
   /* If building or using zlib as a DLL, define ZLIB_DLL.
    * This is not mandatory, but it offers a little performance increase.
    */
#  ifdef ZLIB_DLL
#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
#      ifdef ZLIB_INTERNAL
#        define ZEXTERN extern __declspec(dllexport)
#      else
#        define ZEXTERN extern __declspec(dllimport)
#      endif
#    endif
#  endif  /* ZLIB_DLL */
   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
    * define ZLIB_WINAPI.
    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
    */
#  ifdef ZLIB_WINAPI
#    ifdef FAR
#      undef FAR
#    endif
#    ifndef WIN32_LEAN_AND_MEAN
#      define WIN32_LEAN_AND_MEAN
#    endif
#    include <windows.h>
     /* No need for _export, use ZLIB.DEF instead. */
     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
#    define ZEXPORT WINAPI
#    ifdef WIN32
#      define ZEXPORTVA WINAPIV
#    else
#      define ZEXPORTVA FAR CDECL
#    endif
#  endif
#endif

#if defined (__BEOS__)
#  ifdef ZLIB_DLL
#    ifdef ZLIB_INTERNAL
#      define ZEXPORT   __declspec(dllexport)
#      define ZEXPORTVA __declspec(dllexport)
#    else
#      define ZEXPORT   __declspec(dllimport)
#      define ZEXPORTVA __declspec(dllimport)
#    endif
#  endif
#endif

#ifndef ZEXTERN
#  define ZEXTERN extern
#endif
#ifndef ZEXPORT
#  define ZEXPORT
#endif
#ifndef ZEXPORTVA
#  define ZEXPORTVA
#endif

#ifndef FAR
#  define FAR
#endif

#if !defined(__MACTYPES__)
typedef unsigned char  Byte;  /* 8 bits */
#endif
typedef unsigned int   uInt;  /* 16 bits or more */
typedef unsigned long  uLong; /* 32 bits or more */

#ifdef SMALL_MEDIUM
   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
#  define Bytef Byte FAR
#else
   typedef Byte  FAR Bytef;
#endif
typedef char  FAR charf;
typedef int   FAR intf;
typedef uInt  FAR uIntf;
typedef uLong FAR uLongf;

#ifdef STDC
   typedef void const *voidpc;
   typedef void FAR   *voidpf;
   typedef void       *voidp;
#else
   typedef Byte const *voidpc;
   typedef Byte FAR   *voidpf;
   typedef Byte       *voidp;
#endif

#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
#  include <limits.h>
#  if (UINT_MAX == 0xffffffffUL)
#    define Z_U4 unsigned
#  elif (ULONG_MAX == 0xffffffffUL)
#    define Z_U4 unsigned long
#  elif (USHRT_MAX == 0xffffffffUL)
#    define Z_U4 unsigned short
#  endif
#endif

#ifdef Z_U4
   typedef Z_U4 z_crc_t;
#else
   typedef unsigned long z_crc_t;
#endif

#ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
#  define Z_HAVE_UNISTD_H
#endif

#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
#  define Z_HAVE_STDARG_H
#endif

#ifdef STDC
#  ifndef Z_SOLO
#    include <sys/types.h>      /* for off_t */
#  endif
#endif

#if defined(STDC) || defined(Z_HAVE_STDARG_H)
#  ifndef Z_SOLO
#    include <stdarg.h>         /* for va_list */
#  endif
#endif

#ifdef _WIN32
#  ifndef Z_SOLO
#    include <stddef.h>         /* for wchar_t */
#  endif
#endif

/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
 * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
 * though the former does not conform to the LFS document), but considering
 * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
 * equivalently requesting no 64-bit operations
 */
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
#  undef _LARGEFILE64_SOURCE
#endif

#ifndef Z_HAVE_UNISTD_H
#  ifdef __WATCOMC__
#    define Z_HAVE_UNISTD_H
#  endif
#endif
#ifndef Z_HAVE_UNISTD_H
#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
#    define Z_HAVE_UNISTD_H
#  endif
#endif
#ifndef Z_SOLO
#  if defined(Z_HAVE_UNISTD_H)
#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
#    ifdef VMS
#      include <unixio.h>       /* for off_t */
#    endif
#    ifndef z_off_t
#      define z_off_t off_t
#    endif
#  endif
#endif

#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
#  define Z_LFS64
#endif

#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
#  define Z_LARGE64
#endif

#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
#  define Z_WANT64
#endif

#if !defined(SEEK_SET) && !defined(Z_SOLO)
#  define SEEK_SET        0       /* Seek from beginning of file.  */
#  define SEEK_CUR        1       /* Seek from current position.  */
#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
#endif

#ifndef z_off_t
#  define z_off_t long
#endif

#if !defined(_WIN32) && defined(Z_LARGE64)
#  define z_off64_t off64_t
#else
#  if defined(_WIN32) && !defined(__GNUC__)
#    define z_off64_t __int64
#  else
#    define z_off64_t z_off_t
#  endif
#endif

/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
  #pragma map(deflateInit_,"DEIN")
  #pragma map(deflateInit2_,"DEIN2")
  #pragma map(deflateEnd,"DEEND")
  #pragma map(deflateBound,"DEBND")
  #pragma map(inflateInit_,"ININ")
  #pragma map(inflateInit2_,"ININ2")
  #pragma map(inflateEnd,"INEND")
  #pragma map(inflateSync,"INSY")
  #pragma map(inflateSetDictionary,"INSEDI")
  #pragma map(compressBound,"CMBND")
  #pragma map(inflate_table,"INTABL")
  #pragma map(inflate_fast,"INFA")
  #pragma map(inflate_copyright,"INCOPY")
#endif

#endif /* ZCONF_H */
Added compat/zlib/zconf.h.in.































































































































































































































































































































































































































































































































































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/* zconf.h -- configuration of the zlib compression library
 * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#ifndef ZCONF_H
#define ZCONF_H

/*
 * If you *really* need a unique prefix for all types and library functions,
 * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
 * Even better than compiling with -DZ_PREFIX would be to use configure to set
 * this permanently in zconf.h using "./configure --zprefix".
 */
#ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
#  define Z_PREFIX_SET

/* all linked symbols and init macros */
#  define _dist_code            z__dist_code
#  define _length_code          z__length_code
#  define _tr_align             z__tr_align
#  define _tr_flush_bits        z__tr_flush_bits
#  define _tr_flush_block       z__tr_flush_block
#  define _tr_init              z__tr_init
#  define _tr_stored_block      z__tr_stored_block
#  define _tr_tally             z__tr_tally
#  define adler32               z_adler32
#  define adler32_combine       z_adler32_combine
#  define adler32_combine64     z_adler32_combine64
#  define adler32_z             z_adler32_z
#  ifndef Z_SOLO
#    define compress              z_compress
#    define compress2             z_compress2
#    define compressBound         z_compressBound
#  endif
#  define crc32                 z_crc32
#  define crc32_combine         z_crc32_combine
#  define crc32_combine64       z_crc32_combine64
#  define crc32_combine_gen     z_crc32_combine_gen
#  define crc32_combine_gen64   z_crc32_combine_gen64
#  define crc32_combine_op      z_crc32_combine_op
#  define crc32_z               z_crc32_z
#  define deflate               z_deflate
#  define deflateBound          z_deflateBound
#  define deflateCopy           z_deflateCopy
#  define deflateEnd            z_deflateEnd
#  define deflateGetDictionary  z_deflateGetDictionary
#  define deflateInit           z_deflateInit
#  define deflateInit2          z_deflateInit2
#  define deflateInit2_         z_deflateInit2_
#  define deflateInit_          z_deflateInit_
#  define deflateParams         z_deflateParams
#  define deflatePending        z_deflatePending
#  define deflatePrime          z_deflatePrime
#  define deflateReset          z_deflateReset
#  define deflateResetKeep      z_deflateResetKeep
#  define deflateSetDictionary  z_deflateSetDictionary
#  define deflateSetHeader      z_deflateSetHeader
#  define deflateTune           z_deflateTune
#  define deflate_copyright     z_deflate_copyright
#  define get_crc_table         z_get_crc_table
#  ifndef Z_SOLO
#    define gz_error              z_gz_error
#    define gz_intmax             z_gz_intmax
#    define gz_strwinerror        z_gz_strwinerror
#    define gzbuffer              z_gzbuffer
#    define gzclearerr            z_gzclearerr
#    define gzclose               z_gzclose
#    define gzclose_r             z_gzclose_r
#    define gzclose_w             z_gzclose_w
#    define gzdirect              z_gzdirect
#    define gzdopen               z_gzdopen
#    define gzeof                 z_gzeof
#    define gzerror               z_gzerror
#    define gzflush               z_gzflush
#    define gzfread               z_gzfread
#    define gzfwrite              z_gzfwrite
#    define gzgetc                z_gzgetc
#    define gzgetc_               z_gzgetc_
#    define gzgets                z_gzgets
#    define gzoffset              z_gzoffset
#    define gzoffset64            z_gzoffset64
#    define gzopen                z_gzopen
#    define gzopen64              z_gzopen64
#    ifdef _WIN32
#      define gzopen_w              z_gzopen_w
#    endif
#    define gzprintf              z_gzprintf
#    define gzputc                z_gzputc
#    define gzputs                z_gzputs
#    define gzread                z_gzread
#    define gzrewind              z_gzrewind
#    define gzseek                z_gzseek
#    define gzseek64              z_gzseek64
#    define gzsetparams           z_gzsetparams
#    define gztell                z_gztell
#    define gztell64              z_gztell64
#    define gzungetc              z_gzungetc
#    define gzvprintf             z_gzvprintf
#    define gzwrite               z_gzwrite
#  endif
#  define inflate               z_inflate
#  define inflateBack           z_inflateBack
#  define inflateBackEnd        z_inflateBackEnd
#  define inflateBackInit       z_inflateBackInit
#  define inflateBackInit_      z_inflateBackInit_
#  define inflateCodesUsed      z_inflateCodesUsed
#  define inflateCopy           z_inflateCopy
#  define inflateEnd            z_inflateEnd
#  define inflateGetDictionary  z_inflateGetDictionary
#  define inflateGetHeader      z_inflateGetHeader
#  define inflateInit           z_inflateInit
#  define inflateInit2          z_inflateInit2
#  define inflateInit2_         z_inflateInit2_
#  define inflateInit_          z_inflateInit_
#  define inflateMark           z_inflateMark
#  define inflatePrime          z_inflatePrime
#  define inflateReset          z_inflateReset
#  define inflateReset2         z_inflateReset2
#  define inflateResetKeep      z_inflateResetKeep
#  define inflateSetDictionary  z_inflateSetDictionary
#  define inflateSync           z_inflateSync
#  define inflateSyncPoint      z_inflateSyncPoint
#  define inflateUndermine      z_inflateUndermine
#  define inflateValidate       z_inflateValidate
#  define inflate_copyright     z_inflate_copyright
#  define inflate_fast          z_inflate_fast
#  define inflate_table         z_inflate_table
#  ifndef Z_SOLO
#    define uncompress            z_uncompress
#    define uncompress2           z_uncompress2
#  endif
#  define zError                z_zError
#  ifndef Z_SOLO
#    define zcalloc               z_zcalloc
#    define zcfree                z_zcfree
#  endif
#  define zlibCompileFlags      z_zlibCompileFlags
#  define zlibVersion           z_zlibVersion

/* all zlib typedefs in zlib.h and zconf.h */
#  define Byte                  z_Byte
#  define Bytef                 z_Bytef
#  define alloc_func            z_alloc_func
#  define charf                 z_charf
#  define free_func             z_free_func
#  ifndef Z_SOLO
#    define gzFile                z_gzFile
#  endif
#  define gz_header             z_gz_header
#  define gz_headerp            z_gz_headerp
#  define in_func               z_in_func
#  define intf                  z_intf
#  define out_func              z_out_func
#  define uInt                  z_uInt
#  define uIntf                 z_uIntf
#  define uLong                 z_uLong
#  define uLongf                z_uLongf
#  define voidp                 z_voidp
#  define voidpc                z_voidpc
#  define voidpf                z_voidpf

/* all zlib structs in zlib.h and zconf.h */
#  define gz_header_s           z_gz_header_s
#  define internal_state        z_internal_state

#endif

#if defined(__MSDOS__) && !defined(MSDOS)
#  define MSDOS
#endif
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
#  define OS2
#endif
#if defined(_WINDOWS) && !defined(WINDOWS)
#  define WINDOWS
#endif
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
#  ifndef WIN32
#    define WIN32
#  endif
#endif
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
#    ifndef SYS16BIT
#      define SYS16BIT
#    endif
#  endif
#endif

/*
 * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
 * than 64k bytes at a time (needed on systems with 16-bit int).
 */
#ifdef SYS16BIT
#  define MAXSEG_64K
#endif
#ifdef MSDOS
#  define UNALIGNED_OK
#endif

#ifdef __STDC_VERSION__
#  ifndef STDC
#    define STDC
#  endif
#  if __STDC_VERSION__ >= 199901L
#    ifndef STDC99
#      define STDC99
#    endif
#  endif
#endif
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
#  define STDC
#endif
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
#  define STDC
#endif
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
#  define STDC
#endif
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
#  define STDC
#endif

#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
#  define STDC
#endif

#ifndef STDC
#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
#    define const       /* note: need a more gentle solution here */
#  endif
#endif

#if defined(ZLIB_CONST) && !defined(z_const)
#  define z_const const
#else
#  define z_const
#endif

#ifdef Z_SOLO
#  ifdef _WIN64
     typedef unsigned long long z_size_t;
#  else
     typedef unsigned long z_size_t;
#  endif
#else
#  define z_longlong long long
#  if defined(NO_SIZE_T)
     typedef unsigned NO_SIZE_T z_size_t;
#  elif defined(STDC)
#    include <stddef.h>
     typedef size_t z_size_t;
#  else
     typedef unsigned long z_size_t;
#  endif
#  undef z_longlong
#endif

/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
#  ifdef MAXSEG_64K
#    define MAX_MEM_LEVEL 8
#  else
#    define MAX_MEM_LEVEL 9
#  endif
#endif

/* Maximum value for windowBits in deflateInit2 and inflateInit2.
 * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
 * created by gzip. (Files created by minigzip can still be extracted by
 * gzip.)
 */
#ifndef MAX_WBITS
#  define MAX_WBITS   15 /* 32K LZ77 window */
#endif

/* The memory requirements for deflate are (in bytes):
            (1 << (windowBits+2)) +  (1 << (memLevel+9))
 that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
 plus a few kilobytes for small objects. For example, if you want to reduce
 the default memory requirements from 256K to 128K, compile with
     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
 Of course this will generally degrade compression (there's no free lunch).

   The memory requirements for inflate are (in bytes) 1 << windowBits
 that is, 32K for windowBits=15 (default value) plus about 7 kilobytes
 for small objects.
*/

                        /* Type declarations */

#ifndef OF /* function prototypes */
#  ifdef STDC
#    define OF(args)  args
#  else
#    define OF(args)  ()
#  endif
#endif

/* The following definitions for FAR are needed only for MSDOS mixed
 * model programming (small or medium model with some far allocations).
 * This was tested only with MSC; for other MSDOS compilers you may have
 * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
 * just define FAR to be empty.
 */
#ifdef SYS16BIT
#  if defined(M_I86SM) || defined(M_I86MM)
     /* MSC small or medium model */
#    define SMALL_MEDIUM
#    ifdef _MSC_VER
#      define FAR _far
#    else
#      define FAR far
#    endif
#  endif
#  if (defined(__SMALL__) || defined(__MEDIUM__))
     /* Turbo C small or medium model */
#    define SMALL_MEDIUM
#    ifdef __BORLANDC__
#      define FAR _far
#    else
#      define FAR far
#    endif
#  endif
#endif

#if defined(WINDOWS) || defined(WIN32)
   /* If building or using zlib as a DLL, define ZLIB_DLL.
    * This is not mandatory, but it offers a little performance increase.
    */
#  ifdef ZLIB_DLL
#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
#      ifdef ZLIB_INTERNAL
#        define ZEXTERN extern __declspec(dllexport)
#      else
#        define ZEXTERN extern __declspec(dllimport)
#      endif
#    endif
#  endif  /* ZLIB_DLL */
   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
    * define ZLIB_WINAPI.
    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
    */
#  ifdef ZLIB_WINAPI
#    ifdef FAR
#      undef FAR
#    endif
#    ifndef WIN32_LEAN_AND_MEAN
#      define WIN32_LEAN_AND_MEAN
#    endif
#    include <windows.h>
     /* No need for _export, use ZLIB.DEF instead. */
     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
#    define ZEXPORT WINAPI
#    ifdef WIN32
#      define ZEXPORTVA WINAPIV
#    else
#      define ZEXPORTVA FAR CDECL
#    endif
#  endif
#endif

#if defined (__BEOS__)
#  ifdef ZLIB_DLL
#    ifdef ZLIB_INTERNAL
#      define ZEXPORT   __declspec(dllexport)
#      define ZEXPORTVA __declspec(dllexport)
#    else
#      define ZEXPORT   __declspec(dllimport)
#      define ZEXPORTVA __declspec(dllimport)
#    endif
#  endif
#endif

#ifndef ZEXTERN
#  define ZEXTERN extern
#endif
#ifndef ZEXPORT
#  define ZEXPORT
#endif
#ifndef ZEXPORTVA
#  define ZEXPORTVA
#endif

#ifndef FAR
#  define FAR
#endif

#if !defined(__MACTYPES__)
typedef unsigned char  Byte;  /* 8 bits */
#endif
typedef unsigned int   uInt;  /* 16 bits or more */
typedef unsigned long  uLong; /* 32 bits or more */

#ifdef SMALL_MEDIUM
   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
#  define Bytef Byte FAR
#else
   typedef Byte  FAR Bytef;
#endif
typedef char  FAR charf;
typedef int   FAR intf;
typedef uInt  FAR uIntf;
typedef uLong FAR uLongf;

#ifdef STDC
   typedef void const *voidpc;
   typedef void FAR   *voidpf;
   typedef void       *voidp;
#else
   typedef Byte const *voidpc;
   typedef Byte FAR   *voidpf;
   typedef Byte       *voidp;
#endif

#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
#  include <limits.h>
#  if (UINT_MAX == 0xffffffffUL)
#    define Z_U4 unsigned
#  elif (ULONG_MAX == 0xffffffffUL)
#    define Z_U4 unsigned long
#  elif (USHRT_MAX == 0xffffffffUL)
#    define Z_U4 unsigned short
#  endif
#endif

#ifdef Z_U4
   typedef Z_U4 z_crc_t;
#else
   typedef unsigned long z_crc_t;
#endif

#ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
#  define Z_HAVE_UNISTD_H
#endif

#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
#  define Z_HAVE_STDARG_H
#endif

#ifdef STDC
#  ifndef Z_SOLO
#    include <sys/types.h>      /* for off_t */
#  endif
#endif

#if defined(STDC) || defined(Z_HAVE_STDARG_H)
#  ifndef Z_SOLO
#    include <stdarg.h>         /* for va_list */
#  endif
#endif

#ifdef _WIN32
#  ifndef Z_SOLO
#    include <stddef.h>         /* for wchar_t */
#  endif
#endif

/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
 * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
 * though the former does not conform to the LFS document), but considering
 * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
 * equivalently requesting no 64-bit operations
 */
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
#  undef _LARGEFILE64_SOURCE
#endif

#ifndef Z_HAVE_UNISTD_H
#  ifdef __WATCOMC__
#    define Z_HAVE_UNISTD_H
#  endif
#endif
#ifndef Z_HAVE_UNISTD_H
#  if defined(_LARGEFILE64_SOURCE) && !defined(_WIN32)
#    define Z_HAVE_UNISTD_H
#  endif
#endif
#ifndef Z_SOLO
#  if defined(Z_HAVE_UNISTD_H)
#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
#    ifdef VMS
#      include <unixio.h>       /* for off_t */
#    endif
#    ifndef z_off_t
#      define z_off_t off_t
#    endif
#  endif
#endif

#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
#  define Z_LFS64
#endif

#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
#  define Z_LARGE64
#endif

#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
#  define Z_WANT64
#endif

#if !defined(SEEK_SET) && !defined(Z_SOLO)
#  define SEEK_SET        0       /* Seek from beginning of file.  */
#  define SEEK_CUR        1       /* Seek from current position.  */
#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
#endif

#ifndef z_off_t
#  define z_off_t long
#endif

#if !defined(_WIN32) && defined(Z_LARGE64)
#  define z_off64_t off64_t
#else
#  if defined(_WIN32) && !defined(__GNUC__)
#    define z_off64_t __int64
#  else
#    define z_off64_t z_off_t
#  endif
#endif

/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
  #pragma map(deflateInit_,"DEIN")
  #pragma map(deflateInit2_,"DEIN2")
  #pragma map(deflateEnd,"DEEND")
  #pragma map(deflateBound,"DEBND")
  #pragma map(inflateInit_,"ININ")
  #pragma map(inflateInit2_,"ININ2")
  #pragma map(inflateEnd,"INEND")
  #pragma map(inflateSync,"INSY")
  #pragma map(inflateSetDictionary,"INSEDI")
  #pragma map(compressBound,"CMBND")
  #pragma map(inflate_table,"INTABL")
  #pragma map(inflate_fast,"INFA")
  #pragma map(inflate_copyright,"INCOPY")
#endif

#endif /* ZCONF_H */
Added compat/zlib/zlib.3.





















































































































































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.TH ZLIB 3 "22 Jan 2024"
.SH NAME
zlib \- compression/decompression library
.SH SYNOPSIS
[see
.I zlib.h
for full description]
.SH DESCRIPTION
The
.I zlib
library is a general purpose data compression library.
The code is thread safe, assuming that the standard library functions
used are thread safe, such as memory allocation routines.
It provides in-memory compression and decompression functions,
including integrity checks of the uncompressed data.
This version of the library supports only one compression method (deflation)
but other algorithms may be added later
with the same stream interface.
.LP
Compression can be done in a single step if the buffers are large enough
or can be done by repeated calls of the compression function.
In the latter case,
the application must provide more input and/or consume the output
(providing more output space) before each call.
.LP
The library also supports reading and writing files in
.IR gzip (1)
(.gz) format
with an interface similar to that of stdio.
.LP
The library does not install any signal handler.
The decoder checks the consistency of the compressed data,
so the library should never crash even in the case of corrupted input.
.LP
All functions of the compression library are documented in the file
.IR zlib.h .
The distribution source includes examples of use of the library
in the files
.I test/example.c
and
.IR test/minigzip.c,
as well as other examples in the
.IR examples/
directory.
.LP
Changes to this version are documented in the file
.I ChangeLog
that accompanies the source.
.LP
.I zlib
is built in to many languages and operating systems, including but not limited to
Java, Python, .NET, PHP, Perl, Ruby, Swift, and Go.
.LP
An experimental package to read and write files in the .zip format,
written on top of
.I zlib
by Gilles Vollant (info@winimage.com),
is available at:
.IP
http://www.winimage.com/zLibDll/minizip.html
and also in the
.I contrib/minizip
directory of the main
.I zlib
source distribution.
.SH "SEE ALSO"
The
.I zlib
web site can be found at:
.IP
http://zlib.net/
.LP
The data format used by the
.I zlib
library is described by RFC
(Request for Comments) 1950 to 1952 in the files:
.IP
http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format)
.br
http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format)
.br
http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format)
.LP
Mark Nelson wrote an article about
.I zlib
for the Jan. 1997 issue of  Dr. Dobb's Journal;
a copy of the article is available at:
.IP
http://marknelson.us/1997/01/01/zlib-engine/
.SH "REPORTING PROBLEMS"
Before reporting a problem,
please check the
.I zlib
web site to verify that you have the latest version of
.IR zlib ;
otherwise,
obtain the latest version and see if the problem still exists.
Please read the
.I zlib
FAQ at:
.IP
http://zlib.net/zlib_faq.html
.LP
before asking for help.
Send questions and/or comments to zlib@gzip.org,
or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
.SH AUTHORS AND LICENSE
Version 1.3.1
.LP
Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
.LP
This software is provided 'as-is', without any express or implied
warranty.  In no event will the authors be held liable for any damages
arising from the use of this software.
.LP
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
.LP
.nr step 1 1
.IP \n[step]. 3
The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
.IP \n+[step].
Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
.IP \n+[step].
This notice may not be removed or altered from any source distribution.
.LP
Jean-loup Gailly        Mark Adler
.br
jloup@gzip.org          madler@alumni.caltech.edu
.LP
The deflate format used by
.I zlib
was defined by Phil Katz.
The deflate and
.I zlib
specifications were written by L. Peter Deutsch.
Thanks to all the people who reported problems and suggested various
improvements in
.IR zlib ;
who are too numerous to cite here.
.LP
UNIX manual page by R. P. C. Rodgers,
U.S. National Library of Medicine (rodgers@nlm.nih.gov).
.\" end of man page
Added compat/zlib/zlib.3.pdf.

cannot compute difference between binary files

Added compat/zlib/zlib.h.


















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* zlib.h -- interface of the 'zlib' general purpose compression library
  version 1.3.1, January 22nd, 2024

  Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu


  The data format used by the zlib library is described by RFCs (Request for
  Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
  (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
*/

#ifndef ZLIB_H
#define ZLIB_H

#include "zconf.h"

#ifdef __cplusplus
extern "C" {
#endif

#define ZLIB_VERSION "1.3.1"
#define ZLIB_VERNUM 0x1310
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 3
#define ZLIB_VER_REVISION 1
#define ZLIB_VER_SUBREVISION 0

/*
    The 'zlib' compression library provides in-memory compression and
  decompression functions, including integrity checks of the uncompressed data.
  This version of the library supports only one compression method (deflation)
  but other algorithms will be added later and will have the same stream
  interface.

    Compression can be done in a single step if the buffers are large enough,
  or can be done by repeated calls of the compression function.  In the latter
  case, the application must provide more input and/or consume the output
  (providing more output space) before each call.

    The compressed data format used by default by the in-memory functions is
  the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
  around a deflate stream, which is itself documented in RFC 1951.

    The library also supports reading and writing files in gzip (.gz) format
  with an interface similar to that of stdio using the functions that start
  with "gz".  The gzip format is different from the zlib format.  gzip is a
  gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.

    This library can optionally read and write gzip and raw deflate streams in
  memory as well.

    The zlib format was designed to be compact and fast for use in memory
  and on communications channels.  The gzip format was designed for single-
  file compression on file systems, has a larger header than zlib to maintain
  directory information, and uses a different, slower check method than zlib.

    The library does not install any signal handler.  The decoder checks
  the consistency of the compressed data, so the library should never crash
  even in the case of corrupted input.
*/

typedef voidpf (*alloc_func)(voidpf opaque, uInt items, uInt size);
typedef void   (*free_func)(voidpf opaque, voidpf address);

struct internal_state;

typedef struct z_stream_s {
    z_const Bytef *next_in;     /* next input byte */
    uInt     avail_in;  /* number of bytes available at next_in */
    uLong    total_in;  /* total number of input bytes read so far */

    Bytef    *next_out; /* next output byte will go here */
    uInt     avail_out; /* remaining free space at next_out */
    uLong    total_out; /* total number of bytes output so far */

    z_const char *msg;  /* last error message, NULL if no error */
    struct internal_state FAR *state; /* not visible by applications */

    alloc_func zalloc;  /* used to allocate the internal state */
    free_func  zfree;   /* used to free the internal state */
    voidpf     opaque;  /* private data object passed to zalloc and zfree */

    int     data_type;  /* best guess about the data type: binary or text
                           for deflate, or the decoding state for inflate */
    uLong   adler;      /* Adler-32 or CRC-32 value of the uncompressed data */
    uLong   reserved;   /* reserved for future use */
} z_stream;

typedef z_stream FAR *z_streamp;

/*
     gzip header information passed to and from zlib routines.  See RFC 1952
  for more details on the meanings of these fields.
*/
typedef struct gz_header_s {
    int     text;       /* true if compressed data believed to be text */
    uLong   time;       /* modification time */
    int     xflags;     /* extra flags (not used when writing a gzip file) */
    int     os;         /* operating system */
    Bytef   *extra;     /* pointer to extra field or Z_NULL if none */
    uInt    extra_len;  /* extra field length (valid if extra != Z_NULL) */
    uInt    extra_max;  /* space at extra (only when reading header) */
    Bytef   *name;      /* pointer to zero-terminated file name or Z_NULL */
    uInt    name_max;   /* space at name (only when reading header) */
    Bytef   *comment;   /* pointer to zero-terminated comment or Z_NULL */
    uInt    comm_max;   /* space at comment (only when reading header) */
    int     hcrc;       /* true if there was or will be a header crc */
    int     done;       /* true when done reading gzip header (not used
                           when writing a gzip file) */
} gz_header;

typedef gz_header FAR *gz_headerp;

/*
     The application must update next_in and avail_in when avail_in has dropped
   to zero.  It must update next_out and avail_out when avail_out has dropped
   to zero.  The application must initialize zalloc, zfree and opaque before
   calling the init function.  All other fields are set by the compression
   library and must not be updated by the application.

     The opaque value provided by the application will be passed as the first
   parameter for calls of zalloc and zfree.  This can be useful for custom
   memory management.  The compression library attaches no meaning to the
   opaque value.

     zalloc must return Z_NULL if there is not enough memory for the object.
   If zlib is used in a multi-threaded application, zalloc and zfree must be
   thread safe.  In that case, zlib is thread-safe.  When zalloc and zfree are
   Z_NULL on entry to the initialization function, they are set to internal
   routines that use the standard library functions malloc() and free().

     On 16-bit systems, the functions zalloc and zfree must be able to allocate
   exactly 65536 bytes, but will not be required to allocate more than this if
   the symbol MAXSEG_64K is defined (see zconf.h).  WARNING: On MSDOS, pointers
   returned by zalloc for objects of exactly 65536 bytes *must* have their
   offset normalized to zero.  The default allocation function provided by this
   library ensures this (see zutil.c).  To reduce memory requirements and avoid
   any allocation of 64K objects, at the expense of compression ratio, compile
   the library with -DMAX_WBITS=14 (see zconf.h).

     The fields total_in and total_out can be used for statistics or progress
   reports.  After compression, total_in holds the total size of the
   uncompressed data and may be saved for use by the decompressor (particularly
   if the decompressor wants to decompress everything in a single step).
*/

                        /* constants */

#define Z_NO_FLUSH      0
#define Z_PARTIAL_FLUSH 1
#define Z_SYNC_FLUSH    2
#define Z_FULL_FLUSH    3
#define Z_FINISH        4
#define Z_BLOCK         5
#define Z_TREES         6
/* Allowed flush values; see deflate() and inflate() below for details */

#define Z_OK            0
#define Z_STREAM_END    1
#define Z_NEED_DICT     2
#define Z_ERRNO        (-1)
#define Z_STREAM_ERROR (-2)
#define Z_DATA_ERROR   (-3)
#define Z_MEM_ERROR    (-4)
#define Z_BUF_ERROR    (-5)
#define Z_VERSION_ERROR (-6)
/* Return codes for the compression/decompression functions. Negative values
 * are errors, positive values are used for special but normal events.
 */

#define Z_NO_COMPRESSION         0
#define Z_BEST_SPEED             1
#define Z_BEST_COMPRESSION       9
#define Z_DEFAULT_COMPRESSION  (-1)
/* compression levels */

#define Z_FILTERED            1
#define Z_HUFFMAN_ONLY        2
#define Z_RLE                 3
#define Z_FIXED               4
#define Z_DEFAULT_STRATEGY    0
/* compression strategy; see deflateInit2() below for details */

#define Z_BINARY   0
#define Z_TEXT     1
#define Z_ASCII    Z_TEXT   /* for compatibility with 1.2.2 and earlier */
#define Z_UNKNOWN  2
/* Possible values of the data_type field for deflate() */

#define Z_DEFLATED   8
/* The deflate compression method (the only one supported in this version) */

#define Z_NULL  0  /* for initializing zalloc, zfree, opaque */

#define zlib_version zlibVersion()
/* for compatibility with versions < 1.0.2 */


                        /* basic functions */

ZEXTERN const char * ZEXPORT zlibVersion(void);
/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
   If the first character differs, the library code actually used is not
   compatible with the zlib.h header file used by the application.  This check
   is automatically made by deflateInit and inflateInit.
 */

/*
ZEXTERN int ZEXPORT deflateInit(z_streamp strm, int level);

     Initializes the internal stream state for compression.  The fields
   zalloc, zfree and opaque must be initialized before by the caller.  If
   zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
   allocation functions.  total_in, total_out, adler, and msg are initialized.

     The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
   1 gives best speed, 9 gives best compression, 0 gives no compression at all
   (the input data is simply copied a block at a time).  Z_DEFAULT_COMPRESSION
   requests a default compromise between speed and compression (currently
   equivalent to level 6).

     deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_STREAM_ERROR if level is not a valid compression level, or
   Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
   with the version assumed by the caller (ZLIB_VERSION).  msg is set to null
   if there is no error message.  deflateInit does not perform any compression:
   this will be done by deflate().
*/


ZEXTERN int ZEXPORT deflate(z_streamp strm, int flush);
/*
    deflate compresses as much data as possible, and stops when the input
  buffer becomes empty or the output buffer becomes full.  It may introduce
  some output latency (reading input without producing any output) except when
  forced to flush.

    The detailed semantics are as follows.  deflate performs one or both of the
  following actions:

  - Compress more input starting at next_in and update next_in and avail_in
    accordingly.  If not all input can be processed (because there is not
    enough room in the output buffer), next_in and avail_in are updated and
    processing will resume at this point for the next call of deflate().

  - Generate more output starting at next_out and update next_out and avail_out
    accordingly.  This action is forced if the parameter flush is non zero.
    Forcing flush frequently degrades the compression ratio, so this parameter
    should be set only when necessary.  Some output may be provided even if
    flush is zero.

    Before the call of deflate(), the application should ensure that at least
  one of the actions is possible, by providing more input and/or consuming more
  output, and updating avail_in or avail_out accordingly; avail_out should
  never be zero before the call.  The application can consume the compressed
  output when it wants, for example when the output buffer is full (avail_out
  == 0), or after each call of deflate().  If deflate returns Z_OK and with
  zero avail_out, it must be called again after making room in the output
  buffer because there might be more output pending. See deflatePending(),
  which can be used if desired to determine whether or not there is more output
  in that case.

    Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
  decide how much data to accumulate before producing output, in order to
  maximize compression.

    If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
  flushed to the output buffer and the output is aligned on a byte boundary, so
  that the decompressor can get all input data available so far.  (In
  particular avail_in is zero after the call if enough output space has been
  provided before the call.) Flushing may degrade compression for some
  compression algorithms and so it should be used only when necessary.  This
  completes the current deflate block and follows it with an empty stored block
  that is three bits plus filler bits to the next byte, followed by four bytes
  (00 00 ff ff).

    If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the
  output buffer, but the output is not aligned to a byte boundary.  All of the
  input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.
  This completes the current deflate block and follows it with an empty fixed
  codes block that is 10 bits long.  This assures that enough bytes are output
  in order for the decompressor to finish the block before the empty fixed
  codes block.

    If flush is set to Z_BLOCK, a deflate block is completed and emitted, as
  for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to
  seven bits of the current block are held to be written as the next byte after
  the next deflate block is completed.  In this case, the decompressor may not
  be provided enough bits at this point in order to complete decompression of
  the data provided so far to the compressor.  It may need to wait for the next
  block to be emitted.  This is for advanced applications that need to control
  the emission of deflate blocks.

    If flush is set to Z_FULL_FLUSH, all output is flushed as with
  Z_SYNC_FLUSH, and the compression state is reset so that decompression can
  restart from this point if previous compressed data has been damaged or if
  random access is desired.  Using Z_FULL_FLUSH too often can seriously degrade
  compression.

    If deflate returns with avail_out == 0, this function must be called again
  with the same value of the flush parameter and more output space (updated
  avail_out), until the flush is complete (deflate returns with non-zero
  avail_out).  In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
  avail_out is greater than six when the flush marker begins, in order to avoid
  repeated flush markers upon calling deflate() again when avail_out == 0.

    If the parameter flush is set to Z_FINISH, pending input is processed,
  pending output is flushed and deflate returns with Z_STREAM_END if there was
  enough output space.  If deflate returns with Z_OK or Z_BUF_ERROR, this
  function must be called again with Z_FINISH and more output space (updated
  avail_out) but no more input data, until it returns with Z_STREAM_END or an
  error.  After deflate has returned Z_STREAM_END, the only possible operations
  on the stream are deflateReset or deflateEnd.

    Z_FINISH can be used in the first deflate call after deflateInit if all the
  compression is to be done in a single step.  In order to complete in one
  call, avail_out must be at least the value returned by deflateBound (see
  below).  Then deflate is guaranteed to return Z_STREAM_END.  If not enough
  output space is provided, deflate will not return Z_STREAM_END, and it must
  be called again as described above.

    deflate() sets strm->adler to the Adler-32 checksum of all input read
  so far (that is, total_in bytes).  If a gzip stream is being generated, then
  strm->adler will be the CRC-32 checksum of the input read so far.  (See
  deflateInit2 below.)

    deflate() may update strm->data_type if it can make a good guess about
  the input data type (Z_BINARY or Z_TEXT).  If in doubt, the data is
  considered binary.  This field is only for information purposes and does not
  affect the compression algorithm in any manner.

    deflate() returns Z_OK if some progress has been made (more input
  processed or more output produced), Z_STREAM_END if all input has been
  consumed and all output has been produced (only when flush is set to
  Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
  if next_in or next_out was Z_NULL or the state was inadvertently written over
  by the application), or Z_BUF_ERROR if no progress is possible (for example
  avail_in or avail_out was zero).  Note that Z_BUF_ERROR is not fatal, and
  deflate() can be called again with more input and more output space to
  continue compressing.
*/


ZEXTERN int ZEXPORT deflateEnd(z_streamp strm);
/*
     All dynamically allocated data structures for this stream are freed.
   This function discards any unprocessed input and does not flush any pending
   output.

     deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
   stream state was inconsistent, Z_DATA_ERROR if the stream was freed
   prematurely (some input or output was discarded).  In the error case, msg
   may be set but then points to a static string (which must not be
   deallocated).
*/


/*
ZEXTERN int ZEXPORT inflateInit(z_streamp strm);

     Initializes the internal stream state for decompression.  The fields
   next_in, avail_in, zalloc, zfree and opaque must be initialized before by
   the caller.  In the current version of inflate, the provided input is not
   read or consumed.  The allocation of a sliding window will be deferred to
   the first call of inflate (if the decompression does not complete on the
   first call).  If zalloc and zfree are set to Z_NULL, inflateInit updates
   them to use default allocation functions.  total_in, total_out, adler, and
   msg are initialized.

     inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
   version assumed by the caller, or Z_STREAM_ERROR if the parameters are
   invalid, such as a null pointer to the structure.  msg is set to null if
   there is no error message.  inflateInit does not perform any decompression.
   Actual decompression will be done by inflate().  So next_in, and avail_in,
   next_out, and avail_out are unused and unchanged.  The current
   implementation of inflateInit() does not process any header information --
   that is deferred until inflate() is called.
*/


ZEXTERN int ZEXPORT inflate(z_streamp strm, int flush);
/*
    inflate decompresses as much data as possible, and stops when the input
  buffer becomes empty or the output buffer becomes full.  It may introduce
  some output latency (reading input without producing any output) except when
  forced to flush.

  The detailed semantics are as follows.  inflate performs one or both of the
  following actions:

  - Decompress more input starting at next_in and update next_in and avail_in
    accordingly.  If not all input can be processed (because there is not
    enough room in the output buffer), then next_in and avail_in are updated
    accordingly, and processing will resume at this point for the next call of
    inflate().

  - Generate more output starting at next_out and update next_out and avail_out
    accordingly.  inflate() provides as much output as possible, until there is
    no more input data or no more space in the output buffer (see below about
    the flush parameter).

    Before the call of inflate(), the application should ensure that at least
  one of the actions is possible, by providing more input and/or consuming more
  output, and updating the next_* and avail_* values accordingly.  If the
  caller of inflate() does not provide both available input and available
  output space, it is possible that there will be no progress made.  The
  application can consume the uncompressed output when it wants, for example
  when the output buffer is full (avail_out == 0), or after each call of
  inflate().  If inflate returns Z_OK and with zero avail_out, it must be
  called again after making room in the output buffer because there might be
  more output pending.

    The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,
  Z_BLOCK, or Z_TREES.  Z_SYNC_FLUSH requests that inflate() flush as much
  output as possible to the output buffer.  Z_BLOCK requests that inflate()
  stop if and when it gets to the next deflate block boundary.  When decoding
  the zlib or gzip format, this will cause inflate() to return immediately
  after the header and before the first block.  When doing a raw inflate,
  inflate() will go ahead and process the first block, and will return when it
  gets to the end of that block, or when it runs out of data.

    The Z_BLOCK option assists in appending to or combining deflate streams.
  To assist in this, on return inflate() always sets strm->data_type to the
  number of unused bits in the last byte taken from strm->next_in, plus 64 if
  inflate() is currently decoding the last block in the deflate stream, plus
  128 if inflate() returned immediately after decoding an end-of-block code or
  decoding the complete header up to just before the first byte of the deflate
  stream.  The end-of-block will not be indicated until all of the uncompressed
  data from that block has been written to strm->next_out.  The number of
  unused bits may in general be greater than seven, except when bit 7 of
  data_type is set, in which case the number of unused bits will be less than
  eight.  data_type is set as noted here every time inflate() returns for all
  flush options, and so can be used to determine the amount of currently
  consumed input in bits.

    The Z_TREES option behaves as Z_BLOCK does, but it also returns when the
  end of each deflate block header is reached, before any actual data in that
  block is decoded.  This allows the caller to determine the length of the
  deflate block header for later use in random access within a deflate block.
  256 is added to the value of strm->data_type when inflate() returns
  immediately after reaching the end of the deflate block header.

    inflate() should normally be called until it returns Z_STREAM_END or an
  error.  However if all decompression is to be performed in a single step (a
  single call of inflate), the parameter flush should be set to Z_FINISH.  In
  this case all pending input is processed and all pending output is flushed;
  avail_out must be large enough to hold all of the uncompressed data for the
  operation to complete.  (The size of the uncompressed data may have been
  saved by the compressor for this purpose.)  The use of Z_FINISH is not
  required to perform an inflation in one step.  However it may be used to
  inform inflate that a faster approach can be used for the single inflate()
  call.  Z_FINISH also informs inflate to not maintain a sliding window if the
  stream completes, which reduces inflate's memory footprint.  If the stream
  does not complete, either because not all of the stream is provided or not
  enough output space is provided, then a sliding window will be allocated and
  inflate() can be called again to continue the operation as if Z_NO_FLUSH had
  been used.

     In this implementation, inflate() always flushes as much output as
  possible to the output buffer, and always uses the faster approach on the
  first call.  So the effects of the flush parameter in this implementation are
  on the return value of inflate() as noted below, when inflate() returns early
  when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of
  memory for a sliding window when Z_FINISH is used.

     If a preset dictionary is needed after this call (see inflateSetDictionary
  below), inflate sets strm->adler to the Adler-32 checksum of the dictionary
  chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
  strm->adler to the Adler-32 checksum of all output produced so far (that is,
  total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
  below.  At the end of the stream, inflate() checks that its computed Adler-32
  checksum is equal to that saved by the compressor and returns Z_STREAM_END
  only if the checksum is correct.

    inflate() can decompress and check either zlib-wrapped or gzip-wrapped
  deflate data.  The header type is detected automatically, if requested when
  initializing with inflateInit2().  Any information contained in the gzip
  header is not retained unless inflateGetHeader() is used.  When processing
  gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output
  produced so far.  The CRC-32 is checked against the gzip trailer, as is the
  uncompressed length, modulo 2^32.

    inflate() returns Z_OK if some progress has been made (more input processed
  or more output produced), Z_STREAM_END if the end of the compressed data has
  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
  corrupted (input stream not conforming to the zlib format or incorrect check
  value, in which case strm->msg points to a string with a more specific
  error), Z_STREAM_ERROR if the stream structure was inconsistent (for example
  next_in or next_out was Z_NULL, or the state was inadvertently written over
  by the application), Z_MEM_ERROR if there was not enough memory, Z_BUF_ERROR
  if no progress was possible or if there was not enough room in the output
  buffer when Z_FINISH is used.  Note that Z_BUF_ERROR is not fatal, and
  inflate() can be called again with more input and more output space to
  continue decompressing.  If Z_DATA_ERROR is returned, the application may
  then call inflateSync() to look for a good compression block if a partial
  recovery of the data is to be attempted.
*/


ZEXTERN int ZEXPORT inflateEnd(z_streamp strm);
/*
     All dynamically allocated data structures for this stream are freed.
   This function discards any unprocessed input and does not flush any pending
   output.

     inflateEnd returns Z_OK if success, or Z_STREAM_ERROR if the stream state
   was inconsistent.
*/


                        /* Advanced functions */

/*
    The following functions are needed only in some special applications.
*/

/*
ZEXTERN int ZEXPORT deflateInit2(z_streamp strm,
                                 int level,
                                 int method,
                                 int windowBits,
                                 int memLevel,
                                 int strategy);

     This is another version of deflateInit with more compression options.  The
   fields zalloc, zfree and opaque must be initialized before by the caller.

     The method parameter is the compression method.  It must be Z_DEFLATED in
   this version of the library.

     The windowBits parameter is the base two logarithm of the window size
   (the size of the history buffer).  It should be in the range 8..15 for this
   version of the library.  Larger values of this parameter result in better
   compression at the expense of memory usage.  The default value is 15 if
   deflateInit is used instead.

     For the current implementation of deflate(), a windowBits value of 8 (a
   window size of 256 bytes) is not supported.  As a result, a request for 8
   will result in 9 (a 512-byte window).  In that case, providing 8 to
   inflateInit2() will result in an error when the zlib header with 9 is
   checked against the initialization of inflate().  The remedy is to not use 8
   with deflateInit2() with this initialization, or at least in that case use 9
   with inflateInit2().

     windowBits can also be -8..-15 for raw deflate.  In this case, -windowBits
   determines the window size.  deflate() will then generate raw deflate data
   with no zlib header or trailer, and will not compute a check value.

     windowBits can also be greater than 15 for optional gzip encoding.  Add
   16 to windowBits to write a simple gzip header and trailer around the
   compressed data instead of a zlib wrapper.  The gzip header will have no
   file name, no extra data, no comment, no modification time (set to zero), no
   header crc, and the operating system will be set to the appropriate value,
   if the operating system was determined at compile time.  If a gzip stream is
   being written, strm->adler is a CRC-32 instead of an Adler-32.

     For raw deflate or gzip encoding, a request for a 256-byte window is
   rejected as invalid, since only the zlib header provides a means of
   transmitting the window size to the decompressor.

     The memLevel parameter specifies how much memory should be allocated
   for the internal compression state.  memLevel=1 uses minimum memory but is
   slow and reduces compression ratio; memLevel=9 uses maximum memory for
   optimal speed.  The default value is 8.  See zconf.h for total memory usage
   as a function of windowBits and memLevel.

     The strategy parameter is used to tune the compression algorithm.  Use the
   value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
   filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
   string match), or Z_RLE to limit match distances to one (run-length
   encoding).  Filtered data consists mostly of small values with a somewhat
   random distribution.  In this case, the compression algorithm is tuned to
   compress them better.  The effect of Z_FILTERED is to force more Huffman
   coding and less string matching; it is somewhat intermediate between
   Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY.  Z_RLE is designed to be almost as
   fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data.  The
   strategy parameter only affects the compression ratio but not the
   correctness of the compressed output even if it is not set appropriately.
   Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler
   decoder for special applications.

     deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid
   method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is
   incompatible with the version assumed by the caller (ZLIB_VERSION).  msg is
   set to null if there is no error message.  deflateInit2 does not perform any
   compression: this will be done by deflate().
*/

ZEXTERN int ZEXPORT deflateSetDictionary(z_streamp strm,
                                         const Bytef *dictionary,
                                         uInt  dictLength);
/*
     Initializes the compression dictionary from the given byte sequence
   without producing any compressed output.  When using the zlib format, this
   function must be called immediately after deflateInit, deflateInit2 or
   deflateReset, and before any call of deflate.  When doing raw deflate, this
   function must be called either before any call of deflate, or immediately
   after the completion of a deflate block, i.e. after all input has been
   consumed and all output has been delivered when using any of the flush
   options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH.  The
   compressor and decompressor must use exactly the same dictionary (see
   inflateSetDictionary).

     The dictionary should consist of strings (byte sequences) that are likely
   to be encountered later in the data to be compressed, with the most commonly
   used strings preferably put towards the end of the dictionary.  Using a
   dictionary is most useful when the data to be compressed is short and can be
   predicted with good accuracy; the data can then be compressed better than
   with the default empty dictionary.

     Depending on the size of the compression data structures selected by
   deflateInit or deflateInit2, a part of the dictionary may in effect be
   discarded, for example if the dictionary is larger than the window size
   provided in deflateInit or deflateInit2.  Thus the strings most likely to be
   useful should be put at the end of the dictionary, not at the front.  In
   addition, the current implementation of deflate will use at most the window
   size minus 262 bytes of the provided dictionary.

     Upon return of this function, strm->adler is set to the Adler-32 value
   of the dictionary; the decompressor may later use this value to determine
   which dictionary has been used by the compressor.  (The Adler-32 value
   applies to the whole dictionary even if only a subset of the dictionary is
   actually used by the compressor.) If a raw deflate was requested, then the
   Adler-32 value is not computed and strm->adler is not set.

     deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
   parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
   inconsistent (for example if deflate has already been called for this stream
   or if not at a block boundary for raw deflate).  deflateSetDictionary does
   not perform any compression: this will be done by deflate().
*/

ZEXTERN int ZEXPORT deflateGetDictionary(z_streamp strm,
                                         Bytef *dictionary,
                                         uInt  *dictLength);
/*
     Returns the sliding dictionary being maintained by deflate.  dictLength is
   set to the number of bytes in the dictionary, and that many bytes are copied
   to dictionary.  dictionary must have enough space, where 32768 bytes is
   always enough.  If deflateGetDictionary() is called with dictionary equal to
   Z_NULL, then only the dictionary length is returned, and nothing is copied.
   Similarly, if dictLength is Z_NULL, then it is not set.

     deflateGetDictionary() may return a length less than the window size, even
   when more than the window size in input has been provided. It may return up
   to 258 bytes less in that case, due to how zlib's implementation of deflate
   manages the sliding window and lookahead for matches, where matches can be
   up to 258 bytes long. If the application needs the last window-size bytes of
   input, then that would need to be saved by the application outside of zlib.

     deflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
   stream state is inconsistent.
*/

ZEXTERN int ZEXPORT deflateCopy(z_streamp dest,
                                z_streamp source);
/*
     Sets the destination stream as a complete copy of the source stream.

     This function can be useful when several compression strategies will be
   tried, for example when there are several ways of pre-processing the input
   data with a filter.  The streams that will be discarded should then be freed
   by calling deflateEnd.  Note that deflateCopy duplicates the internal
   compression state which can be quite large, so this strategy is slow and can
   consume lots of memory.

     deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
   (such as zalloc being Z_NULL).  msg is left unchanged in both source and
   destination.
*/

ZEXTERN int ZEXPORT deflateReset(z_streamp strm);
/*
     This function is equivalent to deflateEnd followed by deflateInit, but
   does not free and reallocate the internal compression state.  The stream
   will leave the compression level and any other attributes that may have been
   set unchanged.  total_in, total_out, adler, and msg are initialized.

     deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent (such as zalloc or state being Z_NULL).
*/

ZEXTERN int ZEXPORT deflateParams(z_streamp strm,
                                  int level,
                                  int strategy);
/*
     Dynamically update the compression level and compression strategy.  The
   interpretation of level and strategy is as in deflateInit2().  This can be
   used to switch between compression and straight copy of the input data, or
   to switch to a different kind of input data requiring a different strategy.
   If the compression approach (which is a function of the level) or the
   strategy is changed, and if there have been any deflate() calls since the
   state was initialized or reset, then the input available so far is
   compressed with the old level and strategy using deflate(strm, Z_BLOCK).
   There are three approaches for the compression levels 0, 1..3, and 4..9
   respectively.  The new level and strategy will take effect at the next call
   of deflate().

     If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does
   not have enough output space to complete, then the parameter change will not
   take effect.  In this case, deflateParams() can be called again with the
   same parameters and more output space to try again.

     In order to assure a change in the parameters on the first try, the
   deflate stream should be flushed using deflate() with Z_BLOCK or other flush
   request until strm.avail_out is not zero, before calling deflateParams().
   Then no more input data should be provided before the deflateParams() call.
   If this is done, the old level and strategy will be applied to the data
   compressed before deflateParams(), and the new level and strategy will be
   applied to the data compressed after deflateParams().

     deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream
   state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if
   there was not enough output space to complete the compression of the
   available input data before a change in the strategy or approach.  Note that
   in the case of a Z_BUF_ERROR, the parameters are not changed.  A return
   value of Z_BUF_ERROR is not fatal, in which case deflateParams() can be
   retried with more output space.
*/

ZEXTERN int ZEXPORT deflateTune(z_streamp strm,
                                int good_length,
                                int max_lazy,
                                int nice_length,
                                int max_chain);
/*
     Fine tune deflate's internal compression parameters.  This should only be
   used by someone who understands the algorithm used by zlib's deflate for
   searching for the best matching string, and even then only by the most
   fanatic optimizer trying to squeeze out the last compressed bit for their
   specific input data.  Read the deflate.c source code for the meaning of the
   max_lazy, good_length, nice_length, and max_chain parameters.

     deflateTune() can be called after deflateInit() or deflateInit2(), and
   returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
 */

ZEXTERN uLong ZEXPORT deflateBound(z_streamp strm,
                                   uLong sourceLen);
/*
     deflateBound() returns an upper bound on the compressed size after
   deflation of sourceLen bytes.  It must be called after deflateInit() or
   deflateInit2(), and after deflateSetHeader(), if used.  This would be used
   to allocate an output buffer for deflation in a single pass, and so would be
   called before deflate().  If that first deflate() call is provided the
   sourceLen input bytes, an output buffer allocated to the size returned by
   deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed
   to return Z_STREAM_END.  Note that it is possible for the compressed size to
   be larger than the value returned by deflateBound() if flush options other
   than Z_FINISH or Z_NO_FLUSH are used.
*/

ZEXTERN int ZEXPORT deflatePending(z_streamp strm,
                                   unsigned *pending,
                                   int *bits);
/*
     deflatePending() returns the number of bytes and bits of output that have
   been generated, but not yet provided in the available output.  The bytes not
   provided would be due to the available output space having being consumed.
   The number of bits of output not provided are between 0 and 7, where they
   await more bits to join them in order to fill out a full byte.  If pending
   or bits are Z_NULL, then those values are not set.

     deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent.
 */

ZEXTERN int ZEXPORT deflatePrime(z_streamp strm,
                                 int bits,
                                 int value);
/*
     deflatePrime() inserts bits in the deflate output stream.  The intent
   is that this function is used to start off the deflate output with the bits
   leftover from a previous deflate stream when appending to it.  As such, this
   function can only be used for raw deflate, and must be used before the first
   deflate() call after a deflateInit2() or deflateReset().  bits must be less
   than or equal to 16, and that many of the least significant bits of value
   will be inserted in the output.

     deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
   room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
   source stream state was inconsistent.
*/

ZEXTERN int ZEXPORT deflateSetHeader(z_streamp strm,
                                     gz_headerp head);
/*
     deflateSetHeader() provides gzip header information for when a gzip
   stream is requested by deflateInit2().  deflateSetHeader() may be called
   after deflateInit2() or deflateReset() and before the first call of
   deflate().  The text, time, os, extra field, name, and comment information
   in the provided gz_header structure are written to the gzip header (xflag is
   ignored -- the extra flags are set according to the compression level).  The
   caller must assure that, if not Z_NULL, name and comment are terminated with
   a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
   available there.  If hcrc is true, a gzip header crc is included.  Note that
   the current versions of the command-line version of gzip (up through version
   1.3.x) do not support header crc's, and will report that it is a "multi-part
   gzip file" and give up.

     If deflateSetHeader is not used, the default gzip header has text false,
   the time set to zero, and os set to the current operating system, with no
   extra, name, or comment fields.  The gzip header is returned to the default
   state by deflateReset().

     deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent.
*/

/*
ZEXTERN int ZEXPORT inflateInit2(z_streamp strm,
                                 int windowBits);

     This is another version of inflateInit with an extra parameter.  The
   fields next_in, avail_in, zalloc, zfree and opaque must be initialized
   before by the caller.

     The windowBits parameter is the base two logarithm of the maximum window
   size (the size of the history buffer).  It should be in the range 8..15 for
   this version of the library.  The default value is 15 if inflateInit is used
   instead.  windowBits must be greater than or equal to the windowBits value
   provided to deflateInit2() while compressing, or it must be equal to 15 if
   deflateInit2() was not used.  If a compressed stream with a larger window
   size is given as input, inflate() will return with the error code
   Z_DATA_ERROR instead of trying to allocate a larger window.

     windowBits can also be zero to request that inflate use the window size in
   the zlib header of the compressed stream.

     windowBits can also be -8..-15 for raw inflate.  In this case, -windowBits
   determines the window size.  inflate() will then process raw deflate data,
   not looking for a zlib or gzip header, not generating a check value, and not
   looking for any check values for comparison at the end of the stream.  This
   is for use with other formats that use the deflate compressed data format
   such as zip.  Those formats provide their own check values.  If a custom
   format is developed using the raw deflate format for compressed data, it is
   recommended that a check value such as an Adler-32 or a CRC-32 be applied to
   the uncompressed data as is done in the zlib, gzip, and zip formats.  For
   most applications, the zlib format should be used as is.  Note that comments
   above on the use in deflateInit2() applies to the magnitude of windowBits.

     windowBits can also be greater than 15 for optional gzip decoding.  Add
   32 to windowBits to enable zlib and gzip decoding with automatic header
   detection, or add 16 to decode only the gzip format (the zlib format will
   return a Z_DATA_ERROR).  If a gzip stream is being decoded, strm->adler is a
   CRC-32 instead of an Adler-32.  Unlike the gunzip utility and gzread() (see
   below), inflate() will *not* automatically decode concatenated gzip members.
   inflate() will return Z_STREAM_END at the end of the gzip member.  The state
   would need to be reset to continue decoding a subsequent gzip member.  This
   *must* be done if there is more data after a gzip member, in order for the
   decompression to be compliant with the gzip standard (RFC 1952).

     inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
   version assumed by the caller, or Z_STREAM_ERROR if the parameters are
   invalid, such as a null pointer to the structure.  msg is set to null if
   there is no error message.  inflateInit2 does not perform any decompression
   apart from possibly reading the zlib header if present: actual decompression
   will be done by inflate().  (So next_in and avail_in may be modified, but
   next_out and avail_out are unused and unchanged.) The current implementation
   of inflateInit2() does not process any header information -- that is
   deferred until inflate() is called.
*/

ZEXTERN int ZEXPORT inflateSetDictionary(z_streamp strm,
                                         const Bytef *dictionary,
                                         uInt  dictLength);
/*
     Initializes the decompression dictionary from the given uncompressed byte
   sequence.  This function must be called immediately after a call of inflate,
   if that call returned Z_NEED_DICT.  The dictionary chosen by the compressor
   can be determined from the Adler-32 value returned by that call of inflate.
   The compressor and decompressor must use exactly the same dictionary (see
   deflateSetDictionary).  For raw inflate, this function can be called at any
   time to set the dictionary.  If the provided dictionary is smaller than the
   window and there is already data in the window, then the provided dictionary
   will amend what's there.  The application must insure that the dictionary
   that was used for compression is provided.

     inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
   parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
   inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
   expected one (incorrect Adler-32 value).  inflateSetDictionary does not
   perform any decompression: this will be done by subsequent calls of
   inflate().
*/

ZEXTERN int ZEXPORT inflateGetDictionary(z_streamp strm,
                                         Bytef *dictionary,
                                         uInt  *dictLength);
/*
     Returns the sliding dictionary being maintained by inflate.  dictLength is
   set to the number of bytes in the dictionary, and that many bytes are copied
   to dictionary.  dictionary must have enough space, where 32768 bytes is
   always enough.  If inflateGetDictionary() is called with dictionary equal to
   Z_NULL, then only the dictionary length is returned, and nothing is copied.
   Similarly, if dictLength is Z_NULL, then it is not set.

     inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
   stream state is inconsistent.
*/

ZEXTERN int ZEXPORT inflateSync(z_streamp strm);
/*
     Skips invalid compressed data until a possible full flush point (see above
   for the description of deflate with Z_FULL_FLUSH) can be found, or until all
   available input is skipped.  No output is provided.

     inflateSync searches for a 00 00 FF FF pattern in the compressed data.
   All full flush points have this pattern, but not all occurrences of this
   pattern are full flush points.

     inflateSync returns Z_OK if a possible full flush point has been found,
   Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
   has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
   In the success case, the application may save the current value of total_in
   which indicates where valid compressed data was found.  In the error case,
   the application may repeatedly call inflateSync, providing more input each
   time, until success or end of the input data.
*/

ZEXTERN int ZEXPORT inflateCopy(z_streamp dest,
                                z_streamp source);
/*
     Sets the destination stream as a complete copy of the source stream.

     This function can be useful when randomly accessing a large stream.  The
   first pass through the stream can periodically record the inflate state,
   allowing restarting inflate at those points when randomly accessing the
   stream.

     inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
   (such as zalloc being Z_NULL).  msg is left unchanged in both source and
   destination.
*/

ZEXTERN int ZEXPORT inflateReset(z_streamp strm);
/*
     This function is equivalent to inflateEnd followed by inflateInit,
   but does not free and reallocate the internal decompression state.  The
   stream will keep attributes that may have been set by inflateInit2.
   total_in, total_out, adler, and msg are initialized.

     inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent (such as zalloc or state being Z_NULL).
*/

ZEXTERN int ZEXPORT inflateReset2(z_streamp strm,
                                  int windowBits);
/*
     This function is the same as inflateReset, but it also permits changing
   the wrap and window size requests.  The windowBits parameter is interpreted
   the same as it is for inflateInit2.  If the window size is changed, then the
   memory allocated for the window is freed, and the window will be reallocated
   by inflate() if needed.

     inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent (such as zalloc or state being Z_NULL), or if
   the windowBits parameter is invalid.
*/

ZEXTERN int ZEXPORT inflatePrime(z_streamp strm,
                                 int bits,
                                 int value);
/*
     This function inserts bits in the inflate input stream.  The intent is
   that this function is used to start inflating at a bit position in the
   middle of a byte.  The provided bits will be used before any bytes are used
   from next_in.  This function should only be used with raw inflate, and
   should be used before the first inflate() call after inflateInit2() or
   inflateReset().  bits must be less than or equal to 16, and that many of the
   least significant bits of value will be inserted in the input.

     If bits is negative, then the input stream bit buffer is emptied.  Then
   inflatePrime() can be called again to put bits in the buffer.  This is used
   to clear out bits leftover after feeding inflate a block description prior
   to feeding inflate codes.

     inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent.
*/

ZEXTERN long ZEXPORT inflateMark(z_streamp strm);
/*
     This function returns two values, one in the lower 16 bits of the return
   value, and the other in the remaining upper bits, obtained by shifting the
   return value down 16 bits.  If the upper value is -1 and the lower value is
   zero, then inflate() is currently decoding information outside of a block.
   If the upper value is -1 and the lower value is non-zero, then inflate is in
   the middle of a stored block, with the lower value equaling the number of
   bytes from the input remaining to copy.  If the upper value is not -1, then
   it is the number of bits back from the current bit position in the input of
   the code (literal or length/distance pair) currently being processed.  In
   that case the lower value is the number of bytes already emitted for that
   code.

     A code is being processed if inflate is waiting for more input to complete
   decoding of the code, or if it has completed decoding but is waiting for
   more output space to write the literal or match data.

     inflateMark() is used to mark locations in the input data for random
   access, which may be at bit positions, and to note those cases where the
   output of a code may span boundaries of random access blocks.  The current
   location in the input stream can be determined from avail_in and data_type
   as noted in the description for the Z_BLOCK flush parameter for inflate.

     inflateMark returns the value noted above, or -65536 if the provided
   source stream state was inconsistent.
*/

ZEXTERN int ZEXPORT inflateGetHeader(z_streamp strm,
                                     gz_headerp head);
/*
     inflateGetHeader() requests that gzip header information be stored in the
   provided gz_header structure.  inflateGetHeader() may be called after
   inflateInit2() or inflateReset(), and before the first call of inflate().
   As inflate() processes the gzip stream, head->done is zero until the header
   is completed, at which time head->done is set to one.  If a zlib stream is
   being decoded, then head->done is set to -1 to indicate that there will be
   no gzip header information forthcoming.  Note that Z_BLOCK or Z_TREES can be
   used to force inflate() to return immediately after header processing is
   complete and before any actual data is decompressed.

     The text, time, xflags, and os fields are filled in with the gzip header
   contents.  hcrc is set to true if there is a header CRC.  (The header CRC
   was valid if done is set to one.) If extra is not Z_NULL, then extra_max
   contains the maximum number of bytes to write to extra.  Once done is true,
   extra_len contains the actual extra field length, and extra contains the
   extra field, or that field truncated if extra_max is less than extra_len.
   If name is not Z_NULL, then up to name_max characters are written there,
   terminated with a zero unless the length is greater than name_max.  If
   comment is not Z_NULL, then up to comm_max characters are written there,
   terminated with a zero unless the length is greater than comm_max.  When any
   of extra, name, or comment are not Z_NULL and the respective field is not
   present in the header, then that field is set to Z_NULL to signal its
   absence.  This allows the use of deflateSetHeader() with the returned
   structure to duplicate the header.  However if those fields are set to
   allocated memory, then the application will need to save those pointers
   elsewhere so that they can be eventually freed.

     If inflateGetHeader is not used, then the header information is simply
   discarded.  The header is always checked for validity, including the header
   CRC if present.  inflateReset() will reset the process to discard the header
   information.  The application would need to call inflateGetHeader() again to
   retrieve the header from the next gzip stream.

     inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
   stream state was inconsistent.
*/

/*
ZEXTERN int ZEXPORT inflateBackInit(z_streamp strm, int windowBits,
                                    unsigned char FAR *window);

     Initialize the internal stream state for decompression using inflateBack()
   calls.  The fields zalloc, zfree and opaque in strm must be initialized
   before the call.  If zalloc and zfree are Z_NULL, then the default library-
   derived memory allocation routines are used.  windowBits is the base two
   logarithm of the window size, in the range 8..15.  window is a caller
   supplied buffer of that size.  Except for special applications where it is
   assured that deflate was used with small window sizes, windowBits must be 15
   and a 32K byte window must be supplied to be able to decompress general
   deflate streams.

     See inflateBack() for the usage of these routines.

     inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
   the parameters are invalid, Z_MEM_ERROR if the internal state could not be
   allocated, or Z_VERSION_ERROR if the version of the library does not match
   the version of the header file.
*/

typedef unsigned (*in_func)(void FAR *,
                            z_const unsigned char FAR * FAR *);
typedef int (*out_func)(void FAR *, unsigned char FAR *, unsigned);

ZEXTERN int ZEXPORT inflateBack(z_streamp strm,
                                in_func in, void FAR *in_desc,
                                out_func out, void FAR *out_desc);
/*
     inflateBack() does a raw inflate with a single call using a call-back
   interface for input and output.  This is potentially more efficient than
   inflate() for file i/o applications, in that it avoids copying between the
   output and the sliding window by simply making the window itself the output
   buffer.  inflate() can be faster on modern CPUs when used with large
   buffers.  inflateBack() trusts the application to not change the output
   buffer passed by the output function, at least until inflateBack() returns.

     inflateBackInit() must be called first to allocate the internal state
   and to initialize the state with the user-provided window buffer.
   inflateBack() may then be used multiple times to inflate a complete, raw
   deflate stream with each call.  inflateBackEnd() is then called to free the
   allocated state.

     A raw deflate stream is one with no zlib or gzip header or trailer.
   This routine would normally be used in a utility that reads zip or gzip
   files and writes out uncompressed files.  The utility would decode the
   header and process the trailer on its own, hence this routine expects only
   the raw deflate stream to decompress.  This is different from the default
   behavior of inflate(), which expects a zlib header and trailer around the
   deflate stream.

     inflateBack() uses two subroutines supplied by the caller that are then
   called by inflateBack() for input and output.  inflateBack() calls those
   routines until it reads a complete deflate stream and writes out all of the
   uncompressed data, or until it encounters an error.  The function's
   parameters and return types are defined above in the in_func and out_func
   typedefs.  inflateBack() will call in(in_desc, &buf) which should return the
   number of bytes of provided input, and a pointer to that input in buf.  If
   there is no input available, in() must return zero -- buf is ignored in that
   case -- and inflateBack() will return a buffer error.  inflateBack() will
   call out(out_desc, buf, len) to write the uncompressed data buf[0..len-1].
   out() should return zero on success, or non-zero on failure.  If out()
   returns non-zero, inflateBack() will return with an error.  Neither in() nor
   out() are permitted to change the contents of the window provided to
   inflateBackInit(), which is also the buffer that out() uses to write from.
   The length written by out() will be at most the window size.  Any non-zero
   amount of input may be provided by in().

     For convenience, inflateBack() can be provided input on the first call by
   setting strm->next_in and strm->avail_in.  If that input is exhausted, then
   in() will be called.  Therefore strm->next_in must be initialized before
   calling inflateBack().  If strm->next_in is Z_NULL, then in() will be called
   immediately for input.  If strm->next_in is not Z_NULL, then strm->avail_in
   must also be initialized, and then if strm->avail_in is not zero, input will
   initially be taken from strm->next_in[0 ..  strm->avail_in - 1].

     The in_desc and out_desc parameters of inflateBack() is passed as the
   first parameter of in() and out() respectively when they are called.  These
   descriptors can be optionally used to pass any information that the caller-
   supplied in() and out() functions need to do their job.

     On return, inflateBack() will set strm->next_in and strm->avail_in to
   pass back any unused input that was provided by the last in() call.  The
   return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
   if in() or out() returned an error, Z_DATA_ERROR if there was a format error
   in the deflate stream (in which case strm->msg is set to indicate the nature
   of the error), or Z_STREAM_ERROR if the stream was not properly initialized.
   In the case of Z_BUF_ERROR, an input or output error can be distinguished
   using strm->next_in which will be Z_NULL only if in() returned an error.  If
   strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
   non-zero.  (in() will always be called before out(), so strm->next_in is
   assured to be defined if out() returns non-zero.)  Note that inflateBack()
   cannot return Z_OK.
*/

ZEXTERN int ZEXPORT inflateBackEnd(z_streamp strm);
/*
     All memory allocated by inflateBackInit() is freed.

     inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
   state was inconsistent.
*/

ZEXTERN uLong ZEXPORT zlibCompileFlags(void);
/* Return flags indicating compile-time options.

    Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
     1.0: size of uInt
     3.2: size of uLong
     5.4: size of voidpf (pointer)
     7.6: size of z_off_t

    Compiler, assembler, and debug options:
     8: ZLIB_DEBUG
     9: ASMV or ASMINF -- use ASM code
     10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
     11: 0 (reserved)

    One-time table building (smaller code, but not thread-safe if true):
     12: BUILDFIXED -- build static block decoding tables when needed
     13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
     14,15: 0 (reserved)

    Library content (indicates missing functionality):
     16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
                          deflate code when not needed)
     17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
                    and decode gzip streams (to avoid linking crc code)
     18-19: 0 (reserved)

    Operation variations (changes in library functionality):
     20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
     21: FASTEST -- deflate algorithm with only one, lowest compression level
     22,23: 0 (reserved)

    The sprintf variant used by gzprintf (zero is best):
     24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
     25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
     26: 0 = returns value, 1 = void -- 1 means inferred string length returned

    Remainder:
     27-31: 0 (reserved)
 */

#ifndef Z_SOLO

                        /* utility functions */

/*
     The following utility functions are implemented on top of the basic
   stream-oriented functions.  To simplify the interface, some default options
   are assumed (compression level and memory usage, standard memory allocation
   functions).  The source code of these utility functions can be modified if
   you need special options.
*/

ZEXTERN int ZEXPORT compress(Bytef *dest,   uLongf *destLen,
                             const Bytef *source, uLong sourceLen);
/*
     Compresses the source buffer into the destination buffer.  sourceLen is
   the byte length of the source buffer.  Upon entry, destLen is the total size
   of the destination buffer, which must be at least the value returned by
   compressBound(sourceLen).  Upon exit, destLen is the actual size of the
   compressed data.  compress() is equivalent to compress2() with a level
   parameter of Z_DEFAULT_COMPRESSION.

     compress returns Z_OK if success, Z_MEM_ERROR if there was not
   enough memory, Z_BUF_ERROR if there was not enough room in the output
   buffer.
*/

ZEXTERN int ZEXPORT compress2(Bytef *dest,   uLongf *destLen,
                              const Bytef *source, uLong sourceLen,
                              int level);
/*
     Compresses the source buffer into the destination buffer.  The level
   parameter has the same meaning as in deflateInit.  sourceLen is the byte
   length of the source buffer.  Upon entry, destLen is the total size of the
   destination buffer, which must be at least the value returned by
   compressBound(sourceLen).  Upon exit, destLen is the actual size of the
   compressed data.

     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
   Z_STREAM_ERROR if the level parameter is invalid.
*/

ZEXTERN uLong ZEXPORT compressBound(uLong sourceLen);
/*
     compressBound() returns an upper bound on the compressed size after
   compress() or compress2() on sourceLen bytes.  It would be used before a
   compress() or compress2() call to allocate the destination buffer.
*/

ZEXTERN int ZEXPORT uncompress(Bytef *dest,   uLongf *destLen,
                               const Bytef *source, uLong sourceLen);
/*
     Decompresses the source buffer into the destination buffer.  sourceLen is
   the byte length of the source buffer.  Upon entry, destLen is the total size
   of the destination buffer, which must be large enough to hold the entire
   uncompressed data.  (The size of the uncompressed data must have been saved
   previously by the compressor and transmitted to the decompressor by some
   mechanism outside the scope of this compression library.) Upon exit, destLen
   is the actual size of the uncompressed data.

     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
   enough memory, Z_BUF_ERROR if there was not enough room in the output
   buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.  In
   the case where there is not enough room, uncompress() will fill the output
   buffer with the uncompressed data up to that point.
*/

ZEXTERN int ZEXPORT uncompress2(Bytef *dest,   uLongf *destLen,
                                const Bytef *source, uLong *sourceLen);
/*
     Same as uncompress, except that sourceLen is a pointer, where the
   length of the source is *sourceLen.  On return, *sourceLen is the number of
   source bytes consumed.
*/

                        /* gzip file access functions */

/*
     This library supports reading and writing files in gzip (.gz) format with
   an interface similar to that of stdio, using the functions that start with
   "gz".  The gzip format is different from the zlib format.  gzip is a gzip
   wrapper, documented in RFC 1952, wrapped around a deflate stream.
*/

typedef struct gzFile_s *gzFile;    /* semi-opaque gzip file descriptor */

/*
ZEXTERN gzFile ZEXPORT gzopen(const char *path, const char *mode);

     Open the gzip (.gz) file at path for reading and decompressing, or
   compressing and writing.  The mode parameter is as in fopen ("rb" or "wb")
   but can also include a compression level ("wb9") or a strategy: 'f' for
   filtered data as in "wb6f", 'h' for Huffman-only compression as in "wb1h",
   'R' for run-length encoding as in "wb1R", or 'F' for fixed code compression
   as in "wb9F".  (See the description of deflateInit2 for more information
   about the strategy parameter.)  'T' will request transparent writing or
   appending with no compression and not using the gzip format.

     "a" can be used instead of "w" to request that the gzip stream that will
   be written be appended to the file.  "+" will result in an error, since
   reading and writing to the same gzip file is not supported.  The addition of
   "x" when writing will create the file exclusively, which fails if the file
   already exists.  On systems that support it, the addition of "e" when
   reading or writing will set the flag to close the file on an execve() call.

     These functions, as well as gzip, will read and decode a sequence of gzip
   streams in a file.  The append function of gzopen() can be used to create
   such a file.  (Also see gzflush() for another way to do this.)  When
   appending, gzopen does not test whether the file begins with a gzip stream,
   nor does it look for the end of the gzip streams to begin appending.  gzopen
   will simply append a gzip stream to the existing file.

     gzopen can be used to read a file which is not in gzip format; in this
   case gzread will directly read from the file without decompression.  When
   reading, this will be detected automatically by looking for the magic two-
   byte gzip header.

     gzopen returns NULL if the file could not be opened, if there was
   insufficient memory to allocate the gzFile state, or if an invalid mode was
   specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).
   errno can be checked to determine if the reason gzopen failed was that the
   file could not be opened.
*/

ZEXTERN gzFile ZEXPORT gzdopen(int fd, const char *mode);
/*
     Associate a gzFile with the file descriptor fd.  File descriptors are
   obtained from calls like open, dup, creat, pipe or fileno (if the file has
   been previously opened with fopen).  The mode parameter is as in gzopen.

     The next call of gzclose on the returned gzFile will also close the file
   descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
   fd.  If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
   mode);.  The duplicated descriptor should be saved to avoid a leak, since
   gzdopen does not close fd if it fails.  If you are using fileno() to get the
   file descriptor from a FILE *, then you will have to use dup() to avoid
   double-close()ing the file descriptor.  Both gzclose() and fclose() will
   close the associated file descriptor, so they need to have different file
   descriptors.

     gzdopen returns NULL if there was insufficient memory to allocate the
   gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
   provided, or '+' was provided), or if fd is -1.  The file descriptor is not
   used until the next gz* read, write, seek, or close operation, so gzdopen
   will not detect if fd is invalid (unless fd is -1).
*/

ZEXTERN int ZEXPORT gzbuffer(gzFile file, unsigned size);
/*
     Set the internal buffer size used by this library's functions for file to
   size.  The default buffer size is 8192 bytes.  This function must be called
   after gzopen() or gzdopen(), and before any other calls that read or write
   the file.  The buffer memory allocation is always deferred to the first read
   or write.  Three times that size in buffer space is allocated.  A larger
   buffer size of, for example, 64K or 128K bytes will noticeably increase the
   speed of decompression (reading).

     The new buffer size also affects the maximum length for gzprintf().

     gzbuffer() returns 0 on success, or -1 on failure, such as being called
   too late.
*/

ZEXTERN int ZEXPORT gzsetparams(gzFile file, int level, int strategy);
/*
     Dynamically update the compression level and strategy for file.  See the
   description of deflateInit2 for the meaning of these parameters. Previously
   provided data is flushed before applying the parameter changes.

     gzsetparams returns Z_OK if success, Z_STREAM_ERROR if the file was not
   opened for writing, Z_ERRNO if there is an error writing the flushed data,
   or Z_MEM_ERROR if there is a memory allocation error.
*/

ZEXTERN int ZEXPORT gzread(gzFile file, voidp buf, unsigned len);
/*
     Read and decompress up to len uncompressed bytes from file into buf.  If
   the input file is not in gzip format, gzread copies the given number of
   bytes into the buffer directly from the file.

     After reaching the end of a gzip stream in the input, gzread will continue
   to read, looking for another gzip stream.  Any number of gzip streams may be
   concatenated in the input file, and will all be decompressed by gzread().
   If something other than a gzip stream is encountered after a gzip stream,
   that remaining trailing garbage is ignored (and no error is returned).

     gzread can be used to read a gzip file that is being concurrently written.
   Upon reaching the end of the input, gzread will return with the available
   data.  If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then
   gzclearerr can be used to clear the end of file indicator in order to permit
   gzread to be tried again.  Z_OK indicates that a gzip stream was completed
   on the last gzread.  Z_BUF_ERROR indicates that the input file ended in the
   middle of a gzip stream.  Note that gzread does not return -1 in the event
   of an incomplete gzip stream.  This error is deferred until gzclose(), which
   will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip
   stream.  Alternatively, gzerror can be used before gzclose to detect this
   case.

     gzread returns the number of uncompressed bytes actually read, less than
   len for end of file, or -1 for error.  If len is too large to fit in an int,
   then nothing is read, -1 is returned, and the error state is set to
   Z_STREAM_ERROR.
*/

ZEXTERN z_size_t ZEXPORT gzfread(voidp buf, z_size_t size, z_size_t nitems,
                                 gzFile file);
/*
     Read and decompress up to nitems items of size size from file into buf,
   otherwise operating as gzread() does.  This duplicates the interface of
   stdio's fread(), with size_t request and return types.  If the library
   defines size_t, then z_size_t is identical to size_t.  If not, then z_size_t
   is an unsigned integer type that can contain a pointer.

     gzfread() returns the number of full items read of size size, or zero if
   the end of the file was reached and a full item could not be read, or if
   there was an error.  gzerror() must be consulted if zero is returned in
   order to determine if there was an error.  If the multiplication of size and
   nitems overflows, i.e. the product does not fit in a z_size_t, then nothing
   is read, zero is returned, and the error state is set to Z_STREAM_ERROR.

     In the event that the end of file is reached and only a partial item is
   available at the end, i.e. the remaining uncompressed data length is not a
   multiple of size, then the final partial item is nevertheless read into buf
   and the end-of-file flag is set.  The length of the partial item read is not
   provided, but could be inferred from the result of gztell().  This behavior
   is the same as the behavior of fread() implementations in common libraries,
   but it prevents the direct use of gzfread() to read a concurrently written
   file, resetting and retrying on end-of-file, when size is not 1.
*/

ZEXTERN int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len);
/*
     Compress and write the len uncompressed bytes at buf to file. gzwrite
   returns the number of uncompressed bytes written or 0 in case of error.
*/

ZEXTERN z_size_t ZEXPORT gzfwrite(voidpc buf, z_size_t size,
                                  z_size_t nitems, gzFile file);
/*
     Compress and write nitems items of size size from buf to file, duplicating
   the interface of stdio's fwrite(), with size_t request and return types.  If
   the library defines size_t, then z_size_t is identical to size_t.  If not,
   then z_size_t is an unsigned integer type that can contain a pointer.

     gzfwrite() returns the number of full items written of size size, or zero
   if there was an error.  If the multiplication of size and nitems overflows,
   i.e. the product does not fit in a z_size_t, then nothing is written, zero
   is returned, and the error state is set to Z_STREAM_ERROR.
*/

ZEXTERN int ZEXPORTVA gzprintf(gzFile file, const char *format, ...);
/*
     Convert, format, compress, and write the arguments (...) to file under
   control of the string format, as in fprintf.  gzprintf returns the number of
   uncompressed bytes actually written, or a negative zlib error code in case
   of error.  The number of uncompressed bytes written is limited to 8191, or
   one less than the buffer size given to gzbuffer().  The caller should assure
   that this limit is not exceeded.  If it is exceeded, then gzprintf() will
   return an error (0) with nothing written.  In this case, there may also be a
   buffer overflow with unpredictable consequences, which is possible only if
   zlib was compiled with the insecure functions sprintf() or vsprintf(),
   because the secure snprintf() or vsnprintf() functions were not available.
   This can be determined using zlibCompileFlags().
*/

ZEXTERN int ZEXPORT gzputs(gzFile file, const char *s);
/*
     Compress and write the given null-terminated string s to file, excluding
   the terminating null character.

     gzputs returns the number of characters written, or -1 in case of error.
*/

ZEXTERN char * ZEXPORT gzgets(gzFile file, char *buf, int len);
/*
     Read and decompress bytes from file into buf, until len-1 characters are
   read, or until a newline character is read and transferred to buf, or an
   end-of-file condition is encountered.  If any characters are read or if len
   is one, the string is terminated with a null character.  If no characters
   are read due to an end-of-file or len is less than one, then the buffer is
   left untouched.

     gzgets returns buf which is a null-terminated string, or it returns NULL
   for end-of-file or in case of error.  If there was an error, the contents at
   buf are indeterminate.
*/

ZEXTERN int ZEXPORT gzputc(gzFile file, int c);
/*
     Compress and write c, converted to an unsigned char, into file.  gzputc
   returns the value that was written, or -1 in case of error.
*/

ZEXTERN int ZEXPORT gzgetc(gzFile file);
/*
     Read and decompress one byte from file.  gzgetc returns this byte or -1
   in case of end of file or error.  This is implemented as a macro for speed.
   As such, it does not do all of the checking the other functions do.  I.e.
   it does not check to see if file is NULL, nor whether the structure file
   points to has been clobbered or not.
*/

ZEXTERN int ZEXPORT gzungetc(int c, gzFile file);
/*
     Push c back onto the stream for file to be read as the first character on
   the next read.  At least one character of push-back is always allowed.
   gzungetc() returns the character pushed, or -1 on failure.  gzungetc() will
   fail if c is -1, and may fail if a character has been pushed but not read
   yet.  If gzungetc is used immediately after gzopen or gzdopen, at least the
   output buffer size of pushed characters is allowed.  (See gzbuffer above.)
   The pushed character will be discarded if the stream is repositioned with
   gzseek() or gzrewind().
*/

ZEXTERN int ZEXPORT gzflush(gzFile file, int flush);
/*
     Flush all pending output to file.  The parameter flush is as in the
   deflate() function.  The return value is the zlib error number (see function
   gzerror below).  gzflush is only permitted when writing.

     If the flush parameter is Z_FINISH, the remaining data is written and the
   gzip stream is completed in the output.  If gzwrite() is called again, a new
   gzip stream will be started in the output.  gzread() is able to read such
   concatenated gzip streams.

     gzflush should be called only when strictly necessary because it will
   degrade compression if called too often.
*/

/*
ZEXTERN z_off_t ZEXPORT gzseek(gzFile file,
                               z_off_t offset, int whence);

     Set the starting position to offset relative to whence for the next gzread
   or gzwrite on file.  The offset represents a number of bytes in the
   uncompressed data stream.  The whence parameter is defined as in lseek(2);
   the value SEEK_END is not supported.

     If the file is opened for reading, this function is emulated but can be
   extremely slow.  If the file is opened for writing, only forward seeks are
   supported; gzseek then compresses a sequence of zeroes up to the new
   starting position.

     gzseek returns the resulting offset location as measured in bytes from
   the beginning of the uncompressed stream, or -1 in case of error, in
   particular if the file is opened for writing and the new starting position
   would be before the current position.
*/

ZEXTERN int ZEXPORT    gzrewind(gzFile file);
/*
     Rewind file. This function is supported only for reading.

     gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET).
*/

/*
ZEXTERN z_off_t ZEXPORT    gztell(gzFile file);

     Return the starting position for the next gzread or gzwrite on file.
   This position represents a number of bytes in the uncompressed data stream,
   and is zero when starting, even if appending or reading a gzip stream from
   the middle of a file using gzdopen().

     gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
*/

/*
ZEXTERN z_off_t ZEXPORT gzoffset(gzFile file);

     Return the current compressed (actual) read or write offset of file.  This
   offset includes the count of bytes that precede the gzip stream, for example
   when appending or when using gzdopen() for reading.  When reading, the
   offset does not include as yet unused buffered input.  This information can
   be used for a progress indicator.  On error, gzoffset() returns -1.
*/

ZEXTERN int ZEXPORT gzeof(gzFile file);
/*
     Return true (1) if the end-of-file indicator for file has been set while
   reading, false (0) otherwise.  Note that the end-of-file indicator is set
   only if the read tried to go past the end of the input, but came up short.
   Therefore, just like feof(), gzeof() may return false even if there is no
   more data to read, in the event that the last read request was for the exact
   number of bytes remaining in the input file.  This will happen if the input
   file size is an exact multiple of the buffer size.

     If gzeof() returns true, then the read functions will return no more data,
   unless the end-of-file indicator is reset by gzclearerr() and the input file
   has grown since the previous end of file was detected.
*/

ZEXTERN int ZEXPORT gzdirect(gzFile file);
/*
     Return true (1) if file is being copied directly while reading, or false
   (0) if file is a gzip stream being decompressed.

     If the input file is empty, gzdirect() will return true, since the input
   does not contain a gzip stream.

     If gzdirect() is used immediately after gzopen() or gzdopen() it will
   cause buffers to be allocated to allow reading the file to determine if it
   is a gzip file.  Therefore if gzbuffer() is used, it should be called before
   gzdirect().

     When writing, gzdirect() returns true (1) if transparent writing was
   requested ("wT" for the gzopen() mode), or false (0) otherwise.  (Note:
   gzdirect() is not needed when writing.  Transparent writing must be
   explicitly requested, so the application already knows the answer.  When
   linking statically, using gzdirect() will include all of the zlib code for
   gzip file reading and decompression, which may not be desired.)
*/

ZEXTERN int ZEXPORT    gzclose(gzFile file);
/*
     Flush all pending output for file, if necessary, close file and
   deallocate the (de)compression state.  Note that once file is closed, you
   cannot call gzerror with file, since its structures have been deallocated.
   gzclose must not be called more than once on the same file, just as free
   must not be called more than once on the same allocation.

     gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
   file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the
   last read ended in the middle of a gzip stream, or Z_OK on success.
*/

ZEXTERN int ZEXPORT gzclose_r(gzFile file);
ZEXTERN int ZEXPORT gzclose_w(gzFile file);
/*
     Same as gzclose(), but gzclose_r() is only for use when reading, and
   gzclose_w() is only for use when writing or appending.  The advantage to
   using these instead of gzclose() is that they avoid linking in zlib
   compression or decompression code that is not used when only reading or only
   writing respectively.  If gzclose() is used, then both compression and
   decompression code will be included the application when linking to a static
   zlib library.
*/

ZEXTERN const char * ZEXPORT gzerror(gzFile file, int *errnum);
/*
     Return the error message for the last error which occurred on file.
   errnum is set to zlib error number.  If an error occurred in the file system
   and not in the compression library, errnum is set to Z_ERRNO and the
   application may consult errno to get the exact error code.

     The application must not modify the returned string.  Future calls to
   this function may invalidate the previously returned string.  If file is
   closed, then the string previously returned by gzerror will no longer be
   available.

     gzerror() should be used to distinguish errors from end-of-file for those
   functions above that do not distinguish those cases in their return values.
*/

ZEXTERN void ZEXPORT gzclearerr(gzFile file);
/*
     Clear the error and end-of-file flags for file.  This is analogous to the
   clearerr() function in stdio.  This is useful for continuing to read a gzip
   file that is being written concurrently.
*/

#endif /* !Z_SOLO */

                        /* checksum functions */

/*
     These functions are not related to compression but are exported
   anyway because they might be useful in applications using the compression
   library.
*/

ZEXTERN uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len);
/*
     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
   return the updated checksum. An Adler-32 value is in the range of a 32-bit
   unsigned integer. If buf is Z_NULL, this function returns the required
   initial value for the checksum.

     An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed
   much faster.

   Usage example:

     uLong adler = adler32(0L, Z_NULL, 0);

     while (read_buffer(buffer, length) != EOF) {
       adler = adler32(adler, buffer, length);
     }
     if (adler != original_adler) error();
*/

ZEXTERN uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf,
                                z_size_t len);
/*
     Same as adler32(), but with a size_t length.
*/

/*
ZEXTERN uLong ZEXPORT adler32_combine(uLong adler1, uLong adler2,
                                      z_off_t len2);

     Combine two Adler-32 checksums into one.  For two sequences of bytes, seq1
   and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
   each, adler1 and adler2.  adler32_combine() returns the Adler-32 checksum of
   seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.  Note
   that the z_off_t type (like off_t) is a signed integer.  If len2 is
   negative, the result has no meaning or utility.
*/

ZEXTERN uLong ZEXPORT crc32(uLong crc, const Bytef *buf, uInt len);
/*
     Update a running CRC-32 with the bytes buf[0..len-1] and return the
   updated CRC-32. A CRC-32 value is in the range of a 32-bit unsigned integer.
   If buf is Z_NULL, this function returns the required initial value for the
   crc. Pre- and post-conditioning (one's complement) is performed within this
   function so it shouldn't be done by the application.

   Usage example:

     uLong crc = crc32(0L, Z_NULL, 0);

     while (read_buffer(buffer, length) != EOF) {
       crc = crc32(crc, buffer, length);
     }
     if (crc != original_crc) error();
*/

ZEXTERN uLong ZEXPORT crc32_z(uLong crc, const Bytef *buf,
                              z_size_t len);
/*
     Same as crc32(), but with a size_t length.
*/

/*
ZEXTERN uLong ZEXPORT crc32_combine(uLong crc1, uLong crc2, z_off_t len2);

     Combine two CRC-32 check values into one.  For two sequences of bytes,
   seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
   calculated for each, crc1 and crc2.  crc32_combine() returns the CRC-32
   check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
   len2. len2 must be non-negative.
*/

/*
ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t len2);

     Return the operator corresponding to length len2, to be used with
   crc32_combine_op(). len2 must be non-negative.
*/

ZEXTERN uLong ZEXPORT crc32_combine_op(uLong crc1, uLong crc2, uLong op);
/*
     Give the same result as crc32_combine(), using op in place of len2. op is
   is generated from len2 by crc32_combine_gen(). This will be faster than
   crc32_combine() if the generated op is used more than once.
*/


                        /* various hacks, don't look :) */

/* deflateInit and inflateInit are macros to allow checking the zlib version
 * and the compiler's view of z_stream:
 */
ZEXTERN int ZEXPORT deflateInit_(z_streamp strm, int level,
                                 const char *version, int stream_size);
ZEXTERN int ZEXPORT inflateInit_(z_streamp strm,
                                 const char *version, int stream_size);
ZEXTERN int ZEXPORT deflateInit2_(z_streamp strm, int  level, int  method,
                                  int windowBits, int memLevel,
                                  int strategy, const char *version,
                                  int stream_size);
ZEXTERN int ZEXPORT inflateInit2_(z_streamp strm, int  windowBits,
                                  const char *version, int stream_size);
ZEXTERN int ZEXPORT inflateBackInit_(z_streamp strm, int windowBits,
                                     unsigned char FAR *window,
                                     const char *version,
                                     int stream_size);
#ifdef Z_PREFIX_SET
#  define z_deflateInit(strm, level) \
          deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
#  define z_inflateInit(strm) \
          inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
#  define z_deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
          deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
                        (strategy), ZLIB_VERSION, (int)sizeof(z_stream))
#  define z_inflateInit2(strm, windowBits) \
          inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
                        (int)sizeof(z_stream))
#  define z_inflateBackInit(strm, windowBits, window) \
          inflateBackInit_((strm), (windowBits), (window), \
                           ZLIB_VERSION, (int)sizeof(z_stream))
#else
#  define deflateInit(strm, level) \
          deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
#  define inflateInit(strm) \
          inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
#  define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
          deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
                        (strategy), ZLIB_VERSION, (int)sizeof(z_stream))
#  define inflateInit2(strm, windowBits) \
          inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
                        (int)sizeof(z_stream))
#  define inflateBackInit(strm, windowBits, window) \
          inflateBackInit_((strm), (windowBits), (window), \
                           ZLIB_VERSION, (int)sizeof(z_stream))
#endif

#ifndef Z_SOLO

/* gzgetc() macro and its supporting function and exposed data structure.  Note
 * that the real internal state is much larger than the exposed structure.
 * This abbreviated structure exposes just enough for the gzgetc() macro.  The
 * user should not mess with these exposed elements, since their names or
 * behavior could change in the future, perhaps even capriciously.  They can
 * only be used by the gzgetc() macro.  You have been warned.
 */
struct gzFile_s {
    unsigned have;
    unsigned char *next;
    z_off64_t pos;
};
ZEXTERN int ZEXPORT gzgetc_(gzFile file);       /* backward compatibility */
#ifdef Z_PREFIX_SET
#  undef z_gzgetc
#  define z_gzgetc(g) \
          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
#else
#  define gzgetc(g) \
          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
#endif

/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
 * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
 * both are true, the application gets the *64 functions, and the regular
 * functions are changed to 64 bits) -- in case these are set on systems
 * without large file support, _LFS64_LARGEFILE must also be true
 */
#ifdef Z_LARGE64
   ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
   ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int);
   ZEXTERN z_off64_t ZEXPORT gztell64(gzFile);
   ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile);
   ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off64_t);
   ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off64_t);
   ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off64_t);
#endif

#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
#  ifdef Z_PREFIX_SET
#    define z_gzopen z_gzopen64
#    define z_gzseek z_gzseek64
#    define z_gztell z_gztell64
#    define z_gzoffset z_gzoffset64
#    define z_adler32_combine z_adler32_combine64
#    define z_crc32_combine z_crc32_combine64
#    define z_crc32_combine_gen z_crc32_combine_gen64
#  else
#    define gzopen gzopen64
#    define gzseek gzseek64
#    define gztell gztell64
#    define gzoffset gzoffset64
#    define adler32_combine adler32_combine64
#    define crc32_combine crc32_combine64
#    define crc32_combine_gen crc32_combine_gen64
#  endif
#  ifndef Z_LARGE64
     ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
     ZEXTERN z_off_t ZEXPORT gzseek64(gzFile, z_off_t, int);
     ZEXTERN z_off_t ZEXPORT gztell64(gzFile);
     ZEXTERN z_off_t ZEXPORT gzoffset64(gzFile);
     ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t);
     ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t);
     ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t);
#  endif
#else
   ZEXTERN gzFile ZEXPORT gzopen(const char *, const char *);
   ZEXTERN z_off_t ZEXPORT gzseek(gzFile, z_off_t, int);
   ZEXTERN z_off_t ZEXPORT gztell(gzFile);
   ZEXTERN z_off_t ZEXPORT gzoffset(gzFile);
   ZEXTERN uLong ZEXPORT adler32_combine(uLong, uLong, z_off_t);
   ZEXTERN uLong ZEXPORT crc32_combine(uLong, uLong, z_off_t);
   ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t);
#endif

#else /* Z_SOLO */

   ZEXTERN uLong ZEXPORT adler32_combine(uLong, uLong, z_off_t);
   ZEXTERN uLong ZEXPORT crc32_combine(uLong, uLong, z_off_t);
   ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t);

#endif /* !Z_SOLO */

/* undocumented functions */
ZEXTERN const char   * ZEXPORT zError(int);
ZEXTERN int            ZEXPORT inflateSyncPoint(z_streamp);
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table(void);
ZEXTERN int            ZEXPORT inflateUndermine(z_streamp, int);
ZEXTERN int            ZEXPORT inflateValidate(z_streamp, int);
ZEXTERN unsigned long  ZEXPORT inflateCodesUsed(z_streamp);
ZEXTERN int            ZEXPORT inflateResetKeep(z_streamp);
ZEXTERN int            ZEXPORT deflateResetKeep(z_streamp);
#if defined(_WIN32) && !defined(Z_SOLO)
ZEXTERN gzFile         ZEXPORT gzopen_w(const wchar_t *path,
                                        const char *mode);
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
#  ifndef Z_SOLO
ZEXTERN int            ZEXPORTVA gzvprintf(gzFile file,
                                           const char *format,
                                           va_list va);
#  endif
#endif

#ifdef __cplusplus
}
#endif

#endif /* ZLIB_H */
Added compat/zlib/zlib.map.




































































































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ZLIB_1.2.0 {
  global:
    compressBound;
    deflateBound;
    inflateBack;
    inflateBackEnd;
    inflateBackInit_;
    inflateCopy;
  local:
    deflate_copyright;
    inflate_copyright;
    inflate_fast;
    inflate_table;
    zcalloc;
    zcfree;
    z_errmsg;
    gz_error;
    gz_intmax;
    _*;
};

ZLIB_1.2.0.2 {
    gzclearerr;
    gzungetc;
    zlibCompileFlags;
} ZLIB_1.2.0;

ZLIB_1.2.0.8 {
    deflatePrime;
} ZLIB_1.2.0.2;

ZLIB_1.2.2 {
    adler32_combine;
    crc32_combine;
    deflateSetHeader;
    inflateGetHeader;
} ZLIB_1.2.0.8;

ZLIB_1.2.2.3 {
    deflateTune;
    gzdirect;
} ZLIB_1.2.2;

ZLIB_1.2.2.4 {
    inflatePrime;
} ZLIB_1.2.2.3;

ZLIB_1.2.3.3 {
    adler32_combine64;
    crc32_combine64;
    gzopen64;
    gzseek64;
    gztell64;
    inflateUndermine;
} ZLIB_1.2.2.4;

ZLIB_1.2.3.4 {
    inflateReset2;
    inflateMark;
} ZLIB_1.2.3.3;

ZLIB_1.2.3.5 {
    gzbuffer;
    gzoffset;
    gzoffset64;
    gzclose_r;
    gzclose_w;
} ZLIB_1.2.3.4;

ZLIB_1.2.5.1 {
    deflatePending;
} ZLIB_1.2.3.5;

ZLIB_1.2.5.2 {
    deflateResetKeep;
    gzgetc_;
    inflateResetKeep;
} ZLIB_1.2.5.1;

ZLIB_1.2.7.1 {
    inflateGetDictionary;
    gzvprintf;
} ZLIB_1.2.5.2;

ZLIB_1.2.9 {
    inflateCodesUsed;
    inflateValidate;
    uncompress2;
    gzfread;
    gzfwrite;
    deflateGetDictionary;
    adler32_z;
    crc32_z;
} ZLIB_1.2.7.1;

ZLIB_1.2.12 {
	crc32_combine_gen;
	crc32_combine_gen64;
	crc32_combine_op;
} ZLIB_1.2.9;
Added compat/zlib/zlib.pc.cmakein.













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prefix=@CMAKE_INSTALL_PREFIX@
exec_prefix=@CMAKE_INSTALL_PREFIX@
libdir=@INSTALL_LIB_DIR@
sharedlibdir=@INSTALL_LIB_DIR@
includedir=@INSTALL_INC_DIR@

Name: zlib
Description: zlib compression library
Version: @VERSION@

Requires:
Libs: -L${libdir} -L${sharedlibdir} -lz
Cflags: -I${includedir}
Added compat/zlib/zlib.pc.in.













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prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
sharedlibdir=@sharedlibdir@
includedir=@includedir@

Name: zlib
Description: zlib compression library
Version: @VERSION@

Requires:
Libs: -L${libdir} -L${sharedlibdir} -lz
Cflags: -I${includedir}
Added compat/zlib/zutil.c.











































































































































































































































































































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/* zutil.c -- target dependent utility functions for the compression library
 * Copyright (C) 1995-2017 Jean-loup Gailly
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* @(#) $Id$ */

#include "zutil.h"
#ifndef Z_SOLO
#  include "gzguts.h"
#endif

z_const char * const z_errmsg[10] = {
    (z_const char *)"need dictionary",     /* Z_NEED_DICT       2  */
    (z_const char *)"stream end",          /* Z_STREAM_END      1  */
    (z_const char *)"",                    /* Z_OK              0  */
    (z_const char *)"file error",          /* Z_ERRNO         (-1) */
    (z_const char *)"stream error",        /* Z_STREAM_ERROR  (-2) */
    (z_const char *)"data error",          /* Z_DATA_ERROR    (-3) */
    (z_const char *)"insufficient memory", /* Z_MEM_ERROR     (-4) */
    (z_const char *)"buffer error",        /* Z_BUF_ERROR     (-5) */
    (z_const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */
    (z_const char *)""
};


const char * ZEXPORT zlibVersion(void) {
    return ZLIB_VERSION;
}

uLong ZEXPORT zlibCompileFlags(void) {
    uLong flags;

    flags = 0;
    switch ((int)(sizeof(uInt))) {
    case 2:     break;
    case 4:     flags += 1;     break;
    case 8:     flags += 2;     break;
    default:    flags += 3;
    }
    switch ((int)(sizeof(uLong))) {
    case 2:     break;
    case 4:     flags += 1 << 2;        break;
    case 8:     flags += 2 << 2;        break;
    default:    flags += 3 << 2;
    }
    switch ((int)(sizeof(voidpf))) {
    case 2:     break;
    case 4:     flags += 1 << 4;        break;
    case 8:     flags += 2 << 4;        break;
    default:    flags += 3 << 4;
    }
    switch ((int)(sizeof(z_off_t))) {
    case 2:     break;
    case 4:     flags += 1 << 6;        break;
    case 8:     flags += 2 << 6;        break;
    default:    flags += 3 << 6;
    }
#ifdef ZLIB_DEBUG
    flags += 1 << 8;
#endif
    /*
#if defined(ASMV) || defined(ASMINF)
    flags += 1 << 9;
#endif
     */
#ifdef ZLIB_WINAPI
    flags += 1 << 10;
#endif
#ifdef BUILDFIXED
    flags += 1 << 12;
#endif
#ifdef DYNAMIC_CRC_TABLE
    flags += 1 << 13;
#endif
#ifdef NO_GZCOMPRESS
    flags += 1L << 16;
#endif
#ifdef NO_GZIP
    flags += 1L << 17;
#endif
#ifdef PKZIP_BUG_WORKAROUND
    flags += 1L << 20;
#endif
#ifdef FASTEST
    flags += 1L << 21;
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
#  ifdef NO_vsnprintf
    flags += 1L << 25;
#    ifdef HAS_vsprintf_void
    flags += 1L << 26;
#    endif
#  else
#    ifdef HAS_vsnprintf_void
    flags += 1L << 26;
#    endif
#  endif
#else
    flags += 1L << 24;
#  ifdef NO_snprintf
    flags += 1L << 25;
#    ifdef HAS_sprintf_void
    flags += 1L << 26;
#    endif
#  else
#    ifdef HAS_snprintf_void
    flags += 1L << 26;
#    endif
#  endif
#endif
    return flags;
}

#ifdef ZLIB_DEBUG
#include <stdlib.h>
#  ifndef verbose
#    define verbose 0
#  endif
int ZLIB_INTERNAL z_verbose = verbose;

void ZLIB_INTERNAL z_error(char *m) {
    fprintf(stderr, "%s\n", m);
    exit(1);
}
#endif

/* exported to allow conversion of error code to string for compress() and
 * uncompress()
 */
const char * ZEXPORT zError(int err) {
    return ERR_MSG(err);
}

#if defined(_WIN32_WCE) && _WIN32_WCE < 0x800
    /* The older Microsoft C Run-Time Library for Windows CE doesn't have
     * errno.  We define it as a global variable to simplify porting.
     * Its value is always 0 and should not be used.
     */
    int errno = 0;
#endif

#ifndef HAVE_MEMCPY

void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len) {
    if (len == 0) return;
    do {
        *dest++ = *source++; /* ??? to be unrolled */
    } while (--len != 0);
}

int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len) {
    uInt j;

    for (j = 0; j < len; j++) {
        if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
    }
    return 0;
}

void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len) {
    if (len == 0) return;
    do {
        *dest++ = 0;  /* ??? to be unrolled */
    } while (--len != 0);
}
#endif

#ifndef Z_SOLO

#ifdef SYS16BIT

#ifdef __TURBOC__
/* Turbo C in 16-bit mode */

#  define MY_ZCALLOC

/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
 * and farmalloc(64K) returns a pointer with an offset of 8, so we
 * must fix the pointer. Warning: the pointer must be put back to its
 * original form in order to free it, use zcfree().
 */

#define MAX_PTR 10
/* 10*64K = 640K */

local int next_ptr = 0;

typedef struct ptr_table_s {
    voidpf org_ptr;
    voidpf new_ptr;
} ptr_table;

local ptr_table table[MAX_PTR];
/* This table is used to remember the original form of pointers
 * to large buffers (64K). Such pointers are normalized with a zero offset.
 * Since MSDOS is not a preemptive multitasking OS, this table is not
 * protected from concurrent access. This hack doesn't work anyway on
 * a protected system like OS/2. Use Microsoft C instead.
 */

voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size) {
    voidpf buf;
    ulg bsize = (ulg)items*size;

    (void)opaque;

    /* If we allocate less than 65520 bytes, we assume that farmalloc
     * will return a usable pointer which doesn't have to be normalized.
     */
    if (bsize < 65520L) {
        buf = farmalloc(bsize);
        if (*(ush*)&buf != 0) return buf;
    } else {
        buf = farmalloc(bsize + 16L);
    }
    if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
    table[next_ptr].org_ptr = buf;

    /* Normalize the pointer to seg:0 */
    *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
    *(ush*)&buf = 0;
    table[next_ptr++].new_ptr = buf;
    return buf;
}

void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr) {
    int n;

    (void)opaque;

    if (*(ush*)&ptr != 0) { /* object < 64K */
        farfree(ptr);
        return;
    }
    /* Find the original pointer */
    for (n = 0; n < next_ptr; n++) {
        if (ptr != table[n].new_ptr) continue;

        farfree(table[n].org_ptr);
        while (++n < next_ptr) {
            table[n-1] = table[n];
        }
        next_ptr--;
        return;
    }
    Assert(0, "zcfree: ptr not found");
}

#endif /* __TURBOC__ */


#ifdef M_I86
/* Microsoft C in 16-bit mode */

#  define MY_ZCALLOC

#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
#  define _halloc  halloc
#  define _hfree   hfree
#endif

voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size) {
    (void)opaque;
    return _halloc((long)items, size);
}

void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr) {
    (void)opaque;
    _hfree(ptr);
}

#endif /* M_I86 */

#endif /* SYS16BIT */


#ifndef MY_ZCALLOC /* Any system without a special alloc function */

#ifndef STDC
extern voidp malloc(uInt size);
extern voidp calloc(uInt items, uInt size);
extern void free(voidpf ptr);
#endif

voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size) {
    (void)opaque;
    return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
                              (voidpf)calloc(items, size);
}

void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr) {
    (void)opaque;
    free(ptr);
}

#endif /* MY_ZCALLOC */

#endif /* !Z_SOLO */
Added compat/zlib/zutil.h.






























































































































































































































































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/* zutil.h -- internal interface and configuration of the compression library
 * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

/* WARNING: this file should *not* be used by applications. It is
   part of the implementation of the compression library and is
   subject to change. Applications should only use zlib.h.
 */

/* @(#) $Id$ */

#ifndef ZUTIL_H
#define ZUTIL_H

#ifdef HAVE_HIDDEN
#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
#else
#  define ZLIB_INTERNAL
#endif

#include "zlib.h"

#if defined(STDC) && !defined(Z_SOLO)
#  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
#    include <stddef.h>
#  endif
#  include <string.h>
#  include <stdlib.h>
#endif

#ifndef local
#  define local static
#endif
/* since "static" is used to mean two completely different things in C, we
   define "local" for the non-static meaning of "static", for readability
   (compile with -Dlocal if your debugger can't find static symbols) */

typedef unsigned char  uch;
typedef uch FAR uchf;
typedef unsigned short ush;
typedef ush FAR ushf;
typedef unsigned long  ulg;

#if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
#  include <limits.h>
#  if (ULONG_MAX == 0xffffffffffffffff)
#    define Z_U8 unsigned long
#  elif (ULLONG_MAX == 0xffffffffffffffff)
#    define Z_U8 unsigned long long
#  elif (UINT_MAX == 0xffffffffffffffff)
#    define Z_U8 unsigned
#  endif
#endif

extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
/* (size given to avoid silly warnings with Visual C++) */

#define ERR_MSG(err) z_errmsg[(err) < -6 || (err) > 2 ? 9 : 2 - (err)]

#define ERR_RETURN(strm,err) \
  return (strm->msg = ERR_MSG(err), (err))
/* To be used only when the state is known to be valid */

        /* common constants */

#ifndef DEF_WBITS
#  define DEF_WBITS MAX_WBITS
#endif
/* default windowBits for decompression. MAX_WBITS is for compression only */

#if MAX_MEM_LEVEL >= 8
#  define DEF_MEM_LEVEL 8
#else
#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
#endif
/* default memLevel */

#define STORED_BLOCK 0
#define STATIC_TREES 1
#define DYN_TREES    2
/* The three kinds of block type */

#define MIN_MATCH  3
#define MAX_MATCH  258
/* The minimum and maximum match lengths */

#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */

        /* target dependencies */

#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
#  define OS_CODE  0x00
#  ifndef Z_SOLO
#    if defined(__TURBOC__) || defined(__BORLANDC__)
#      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
         /* Allow compilation with ANSI keywords only enabled */
         void _Cdecl farfree( void *block );
         void *_Cdecl farmalloc( unsigned long nbytes );
#      else
#        include <alloc.h>
#      endif
#    else /* MSC or DJGPP */
#      include <malloc.h>
#    endif
#  endif
#endif

#ifdef AMIGA
#  define OS_CODE  1
#endif

#if defined(VAXC) || defined(VMS)
#  define OS_CODE  2
#  define F_OPEN(name, mode) \
     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
#endif

#ifdef __370__
#  if __TARGET_LIB__ < 0x20000000
#    define OS_CODE 4
#  elif __TARGET_LIB__ < 0x40000000
#    define OS_CODE 11
#  else
#    define OS_CODE 8
#  endif
#endif

#if defined(ATARI) || defined(atarist)
#  define OS_CODE  5
#endif

#ifdef OS2
#  define OS_CODE  6
#  if defined(M_I86) && !defined(Z_SOLO)
#    include <malloc.h>
#  endif
#endif

#if defined(MACOS)
#  define OS_CODE  7
#endif

#ifdef __acorn
#  define OS_CODE 13
#endif

#if defined(WIN32) && !defined(__CYGWIN__)
#  define OS_CODE  10
#endif

#ifdef _BEOS_
#  define OS_CODE  16
#endif

#ifdef __TOS_OS400__
#  define OS_CODE 18
#endif

#ifdef __APPLE__
#  define OS_CODE 19
#endif

#if defined(__BORLANDC__) && !defined(MSDOS)
  #pragma warn -8004
  #pragma warn -8008
  #pragma warn -8066
#endif

/* provide prototypes for these when building zlib without LFS */
#if !defined(_WIN32) && \
    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
    ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t);
    ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t);
    ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t);
#endif

        /* common defaults */

#ifndef OS_CODE
#  define OS_CODE  3     /* assume Unix */
#endif

#ifndef F_OPEN
#  define F_OPEN(name, mode) fopen((name), (mode))
#endif

         /* functions */

#if defined(pyr) || defined(Z_SOLO)
#  define NO_MEMCPY
#endif
#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
 /* Use our own functions for small and medium model with MSC <= 5.0.
  * You may have to use the same strategy for Borland C (untested).
  * The __SC__ check is for Symantec.
  */
#  define NO_MEMCPY
#endif
#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
#  define HAVE_MEMCPY
#endif
#ifdef HAVE_MEMCPY
#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
#    define zmemcpy _fmemcpy
#    define zmemcmp _fmemcmp
#    define zmemzero(dest, len) _fmemset(dest, 0, len)
#  else
#    define zmemcpy memcpy
#    define zmemcmp memcmp
#    define zmemzero(dest, len) memset(dest, 0, len)
#  endif
#else
   void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len);
   int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len);
   void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len);
#endif

/* Diagnostic functions */
#ifdef ZLIB_DEBUG
#  include <stdio.h>
   extern int ZLIB_INTERNAL z_verbose;
   extern void ZLIB_INTERNAL z_error(char *m);
#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
#else
#  define Assert(cond,msg)
#  define Trace(x)
#  define Tracev(x)
#  define Tracevv(x)
#  define Tracec(c,x)
#  define Tracecv(c,x)
#endif

#ifndef Z_SOLO
   voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items,
                                unsigned size);
   void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr);
#endif

#define ZALLOC(strm, items, size) \
           (*((strm)->zalloc))((strm)->opaque, (items), (size))
#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}

/* Reverse the bytes in a 32-bit value */
#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
                    (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))

#endif /* ZUTIL_H */
Added configure.




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#!/bin/sh
dir="`dirname "$0"`/autosetup"
#@@INITCHECK@@#
WRAPPER="$0"; export WRAPPER; exec "`"$dir/autosetup-find-tclsh"`" "$dir/autosetup" "$@"
Deleted cvs2fossil.txt.
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Known problems and areas to work on
===================================

*	Not yet able to handle the specification of multiple projects
	for one CVS repository. I.e. I can, for example, import all of
	tcllib, or a single subproject of tcllib, like tklib, but not
	multiple sub-projects in one go.

*	Consider to rework the breaker- and sort-passes so that they
        do not need all changesets as objects in memory.

	Current memory consumption after all changesets are loaded:

	bwidget		 6971627    6.6
	cvs-memchan	 4634049    4.4
	cvs-sqlite	45674501   43.6
	cvs-trf		 8781289    8.4
	faqs		 2835116    2.7
	libtommath	 4405066    4.2
	mclistbox	 3350190    3.2 
	newclock	 5020460    4.8
	oocore		 4064574    3.9
	sampleextension	 4729932    4.5
	tclapps		 8482135    8.1
	tclbench	 4116887    3.9
	tcl_bignum	 2545192    2.4
	tclconfig	 4105042    3.9
	tcllib		31707688   30.2
	tcltutorial	 3512048    3.3
	tcl	       109926382  104.8
	thread		 8953139    8.5
	tklib		13935220   13.3
	tk		66149870   63.1
	widget		 2625609    2.5

*	Look at the dependencies on external packages and consider
	which of them can be moved into the importer, either as a
	simple utility command, or wholesale.

	struct::list
		assign, map, reverse, filter

		Very few and self-contained commands.

	struct::set
		size, empty, contains, add, include, exclude,
		intersect, subsetof

		Most of the core commands.

	fileutil
		cat, appendToFile, writeFile,
		tempfile, stripPath, test

	fileutil::traverse
		In toto

	struct::graph
		In toto

	snit
		In toto

	sqlite3
		In toto
Changes to debian/makedeb.sh.
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#!/bin/bash
# A quick hack to generate a Debian package of fossil. i took most of this
# from Martin Krafft's "The Debian System" book.

DEB_REV=${1-1} # .deb package build/revision number.
PACKAGE_DEBNAME=fossil-scm
PACKAGE_DEBNAME=fossil
THISDIR=${PWD}

if uname -a | grep -i nexenta &>/dev/null; then
# Assume NexentaOS/GnuSolaris:
    DEB_PLATFORM=nexenta
    DEB_ARCH_NAME=solaris-i386
    DEB_ARCH_PKGDEPENDS="sunwcsl" # for -lsocket
else
    DEB_PLATFORM=${DEB_PLATFORM-ubuntu-gutsy}
    DEB_ARCH_NAME=i386
    DEB_ARCH_NAME=$(dpkg --print-architecture)
fi

SRCDIR=$(cd ..; pwd)
test -e ${SRCDIR}/fossil || {
    echo "This script must be run from a BUILT copy of the source tree."
    exit 1
}
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-
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rm -fr DEBIAN
mkdir DEBIAN

PACKAGE_VERSION=$(date +%Y.%m.%d)
PACKAGE_DEB_VERSION=${PACKAGE_VERSION}-${DEB_REV}
DEBFILE=${THISDIR}/${PACKAGE_DEBNAME}-${PACKAGE_DEB_VERSION}-dev-${DEB_ARCH_NAME}-${DEB_PLATFORM}.deb
DEBFILE=${THISDIR}/${PACKAGE_DEBNAME}-${PACKAGE_DEB_VERSION}-dev-${DEB_ARCH_NAME}.deb
PACKAGE_TIME=$(/bin/date)

rm -f ${DEBFILE}
echo "Creating .deb package [${DEBFILE}]..."

echo "Generating md5 sums..."
find ${DEBLOCALPREFIX} -type f -exec md5sum {} \; > DEBIAN/md5sums

true && {
    echo "Generating Debian-specific files..."
    COPYRIGHT=${DEBLOCALPREFIX}/share/doc/${PACKAGE_DEBNAME}/copyright
    cat <<EOF > ${COPYRIGHT}
This package was created by stephan beal <stephan@s11n.net>
This package was created by fossil-scm <fossil-dev@lists.fossil-scm.org>
on ${PACKAGE_TIME}.

The original sources for fossil can be downloaded for free from:

http://www.fossil-scm.org/
http://fossil-scm.org/

fossil is released under the terms of the GNU General Public License.
fossil is released under the terms of the 2-clause BSD License.

EOF
}

true && {
    CHANGELOG=${DEBLOCALPREFIX}/share/doc/${PACKAGE_DEBNAME}/changelog.gz
    cat <<EOF | gzip -c > ${CHANGELOG}
${PACKAGE_DEBNAME} ${PACKAGE_DEB_VERSION}; urgency=low

This release has no changes over the core source distribution. It has
simply been Debianized.

Packaged by stephan beal <stephan@s11n.net> on
Packaged by fossil-dev <fossil-dev@lists.fossil-scm.org> on
${PACKAGE_TIME}.

EOF

}


true && {
    CONTROL=DEBIAN/control
    echo "Generating ${CONTROL}..."
    cat <<EOF > ${CONTROL}
Package: ${PACKAGE_DEBNAME}
Section: devel
Section: vcs
Priority: optional
Maintainer: stephan beal <stephan@s11n.net>
Maintainer: fossil-dev <fossil-dev@lists.fossil-scm.org>
Architecture: ${DEB_ARCH_NAME}
Depends: libc6-dev ${DEB_ARCH_PKGDEPENDS+, }${DEB_ARCH_PKGDEPENDS}
Depends: libc6 ${DEB_ARCH_PKGDEPENDS+, }${DEB_ARCH_PKGDEPENDS}
Version: ${PACKAGE_DEB_VERSION}
Description: Fossil is a unique SCM (Software Configuration Management) system.
 This package contains the Fossil binary for *buntu/Debian systems.
 Fossil is a unique SCM program which supports distributed source control
 management using local repositories, access over HTTP CGI, or using the
 built-in HTTP server. It has a built-in wiki, file browsing, etc.
 Fossil home page: http://fossil-scm.org
 Fossil author: D. Richard Hipp
 License: GNU GPLv2
 License: 2-clause BSD
EOF

}


true && {
#    GZ_CONTROL=control.tar.gz
Added extsrc/cson_amalgamation.c.












































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/* auto-generated! Do not edit! */
#include "cson_amalgamation.h"
/* begin file parser/JSON_parser.h */
/* See JSON_parser.c for copyright information and licensing. */

#ifndef JSON_PARSER_H
#define JSON_PARSER_H

/* JSON_parser.h */


#include <stddef.h>

/* Windows DLL stuff */
#ifdef JSON_PARSER_DLL
#   ifdef _MSC_VER
#	    ifdef JSON_PARSER_DLL_EXPORTS
#		    define JSON_PARSER_DLL_API __declspec(dllexport)
#	    else
#		    define JSON_PARSER_DLL_API __declspec(dllimport)
#       endif
#   else
#	    define JSON_PARSER_DLL_API 
#   endif
#else
#	define JSON_PARSER_DLL_API 
#endif

/* Determine the integer type use to parse non-floating point numbers */
#ifdef _WIN32
typedef __int64 JSON_int_t;
#define JSON_PARSER_INTEGER_SSCANF_TOKEN "%I64d"
#define JSON_PARSER_INTEGER_SPRINTF_TOKEN "%I64d"
#elif (__STDC_VERSION__ >= 199901L) || (HAVE_LONG_LONG == 1)
typedef long long JSON_int_t;
#define JSON_PARSER_INTEGER_SSCANF_TOKEN "%lld"
#define JSON_PARSER_INTEGER_SPRINTF_TOKEN "%lld"
#else 
typedef long JSON_int_t;
#define JSON_PARSER_INTEGER_SSCANF_TOKEN "%ld"
#define JSON_PARSER_INTEGER_SPRINTF_TOKEN "%ld"
#endif


#ifdef __cplusplus
extern "C" {
#endif 

typedef enum 
{
    JSON_E_NONE = 0,
    JSON_E_INVALID_CHAR,
    JSON_E_INVALID_KEYWORD,
    JSON_E_INVALID_ESCAPE_SEQUENCE,
    JSON_E_INVALID_UNICODE_SEQUENCE,
    JSON_E_INVALID_NUMBER,
    JSON_E_NESTING_DEPTH_REACHED,
    JSON_E_UNBALANCED_COLLECTION,
    JSON_E_EXPECTED_KEY,
    JSON_E_EXPECTED_COLON,
    JSON_E_OUT_OF_MEMORY
} JSON_error;

typedef enum 
{
    JSON_T_NONE = 0,
    JSON_T_ARRAY_BEGIN,
    JSON_T_ARRAY_END,
    JSON_T_OBJECT_BEGIN,
    JSON_T_OBJECT_END,
    JSON_T_INTEGER,
    JSON_T_FLOAT,
    JSON_T_NULL,
    JSON_T_TRUE,
    JSON_T_FALSE,
    JSON_T_STRING,
    JSON_T_KEY,
    JSON_T_MAX
} JSON_type;

typedef struct JSON_value_struct {
    union {
        JSON_int_t integer_value;
        
        double float_value;
        
        struct {
            const char* value;
            size_t length;
        } str;
    } vu;
} JSON_value;

typedef struct JSON_parser_struct* JSON_parser;

/*! \brief JSON parser callback 

    \param ctx The pointer passed to new_JSON_parser.
    \param type An element of JSON_type but not JSON_T_NONE.    
    \param value A representation of the parsed value. This parameter is NULL for
        JSON_T_ARRAY_BEGIN, JSON_T_ARRAY_END, JSON_T_OBJECT_BEGIN, JSON_T_OBJECT_END,
        JSON_T_NULL, JSON_T_TRUE, and JSON_T_FALSE. String values are always returned
        as zero-terminated C strings.

    \return Non-zero if parsing should continue, else zero.
*/    
typedef int (*JSON_parser_callback)(void* ctx, int type, const JSON_value* value);


/**
   A typedef for allocator functions semantically compatible with malloc().
*/
typedef void* (*JSON_malloc_t)(size_t n);
/**
   A typedef for deallocator functions semantically compatible with free().
*/
typedef void (*JSON_free_t)(void* mem);

/*! \brief The structure used to configure a JSON parser object 
*/
typedef struct {
    /** Pointer to a callback, called when the parser has something to tell
        the user. This parameter may be NULL. In this case the input is
        merely checked for validity.
    */
    JSON_parser_callback    callback;
    /**
       Callback context - client-specified data to pass to the
       callback function. This parameter may be NULL.
    */
    void*                   callback_ctx;
    /** Specifies the levels of nested JSON to allow. Negative numbers yield unlimited nesting.
        If negative, the parser can parse arbitrary levels of JSON, otherwise
        the depth is the limit.
    */
    int                     depth;
    /**
       To allow C style comments in JSON, set to non-zero.
    */
    int                     allow_comments;
    /**
       To decode floating point numbers manually set this parameter to
       non-zero.
    */
    int                     handle_floats_manually;
    /**
       The memory allocation routine, which must be semantically
       compatible with malloc(3). If set to NULL, malloc(3) is used.

       If this is set to a non-NULL value then the 'free' member MUST be
       set to the proper deallocation counterpart for this function.
       Failure to do so results in undefined behaviour at deallocation
       time.
    */
    JSON_malloc_t       malloc;
    /**
       The memory deallocation routine, which must be semantically
       compatible with free(3). If set to NULL, free(3) is used.

       If this is set to a non-NULL value then the 'alloc' member MUST be
       set to the proper allocation counterpart for this function.
       Failure to do so results in undefined behaviour at deallocation
       time.
    */
    JSON_free_t         free;
} JSON_config;

/*! \brief Initializes the JSON parser configuration structure to default values.

    The default configuration is
    - 127 levels of nested JSON (depends on JSON_PARSER_STACK_SIZE, see json_parser.c)
    - no parsing, just checking for JSON syntax
    - no comments
    - Uses realloc() for memory de/allocation.

    \param config. Used to configure the parser.
*/
JSON_PARSER_DLL_API void init_JSON_config(JSON_config * config);

/*! \brief Create a JSON parser object 

    \param config. Used to configure the parser. Set to NULL to use
        the default configuration. See init_JSON_config.  Its contents are
        copied by this function, so it need not outlive the returned
        object.
    
    \return The parser object, which is owned by the caller and must eventually
    be freed by calling delete_JSON_parser().
*/
JSON_PARSER_DLL_API JSON_parser new_JSON_parser(JSON_config const* config);

/*! \brief Destroy a previously created JSON parser object. */
JSON_PARSER_DLL_API void delete_JSON_parser(JSON_parser jc);

/*! \brief Parse a character.

    \return Non-zero, if all characters passed to this function are part of are valid JSON.
*/
JSON_PARSER_DLL_API int JSON_parser_char(JSON_parser jc, int next_char);

/*! \brief Finalize parsing.

    Call this method once after all input characters have been consumed.
    
    \return Non-zero, if all parsed characters are valid JSON, zero otherwise.
*/
JSON_PARSER_DLL_API int JSON_parser_done(JSON_parser jc);

/*! \brief Determine if a given string is valid JSON white space 

    \return Non-zero if the string is valid, zero otherwise.
*/
JSON_PARSER_DLL_API int JSON_parser_is_legal_white_space_string(const char* s);

/*! \brief Gets the last error that occurred during the use of JSON_parser.

    \return A value from the JSON_error enum.
*/
JSON_PARSER_DLL_API int JSON_parser_get_last_error(JSON_parser jc);

/*! \brief Re-sets the parser to prepare it for another parse run.

    \return True (non-zero) on success, 0 on error (e.g. !jc).
*/
JSON_PARSER_DLL_API int JSON_parser_reset(JSON_parser jc);


#ifdef __cplusplus
}
#endif 
    

#endif /* JSON_PARSER_H */
/* end file parser/JSON_parser.h */
/* begin file parser/JSON_parser.c */
/*
Copyright (c) 2007-2013 Jean Gressmann (jean@0x42.de)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

/*
    Changelog:
        2013-09-08
            Updated license to to be compatible with Debian license requirements.

        2012-06-06
            Fix for invalid UTF16 characters and some comment fixex (thomas.h.moog@intel.com).

        2010-11-25
            Support for custom memory allocation (sgbeal@googlemail.com).

        2010-05-07
            Added error handling for memory allocation failure (sgbeal@googlemail.com).
            Added diagnosis errors for invalid JSON.

        2010-03-25
            Fixed buffer overrun in grow_parse_buffer & cleaned up code.

        2009-10-19
            Replaced long double in JSON_value_struct with double after reports
            of strtold being broken on some platforms (charles@transmissionbt.com).

        2009-05-17
            Incorporated benrudiak@googlemail.com fix for UTF16 decoding.

        2009-05-14
            Fixed float parsing bug related to a locale being set that didn't
            use '.' as decimal point character (charles@transmissionbt.com).

        2008-10-14
            Renamed states.IN to states.IT to avoid name clash which IN macro
            defined in windef.h (alexey.pelykh@gmail.com)

        2008-07-19
            Removed some duplicate code & debugging variable (charles@transmissionbt.com)

        2008-05-28
            Made JSON_value structure ansi C compliant. This bug was report by
            trisk@acm.jhu.edu

        2008-05-20
            Fixed bug reported by charles@transmissionbt.com where the switching
            from static to dynamic parse buffer did not copy the static parse
            buffer's content.
*/



#include <assert.h>
#include <ctype.h>
#include <float.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>


#ifdef _MSC_VER
#   if _MSC_VER >= 1400 /* Visual Studio 2005 and up */
#      pragma warning(disable:4996) /* unsecure sscanf */
#      pragma warning(disable:4127) /* conditional expression is constant */
#   endif
#endif


#define true  1
#define false 0
#define XX   -1     /* the universal error code */

/* values chosen so that the object size is approx equal to one page (4K) */
#ifndef JSON_PARSER_STACK_SIZE
#   define JSON_PARSER_STACK_SIZE 128
#endif

#ifndef JSON_PARSER_PARSE_BUFFER_SIZE
#   define JSON_PARSER_PARSE_BUFFER_SIZE 3500
#endif

typedef void* (*JSON_debug_malloc_t)(size_t bytes, const char* reason);

#ifdef JSON_PARSER_DEBUG_MALLOC
#   define JSON_parser_malloc(func, bytes, reason) ((JSON_debug_malloc_t)func)(bytes, reason)
#else
#   define JSON_parser_malloc(func, bytes, reason) func(bytes)
#endif

typedef unsigned short UTF16;

struct JSON_parser_struct {
    JSON_parser_callback callback;
    void* ctx;
    signed char state, before_comment_state, type, escaped, comment, allow_comments, handle_floats_manually, error;
    char decimal_point;
    UTF16 utf16_high_surrogate;
    int current_char;
    int depth;
    int top;
    int stack_capacity;
    signed char* stack;
    char* parse_buffer;
    size_t parse_buffer_capacity;
    size_t parse_buffer_count;
    signed char static_stack[JSON_PARSER_STACK_SIZE];
    char static_parse_buffer[JSON_PARSER_PARSE_BUFFER_SIZE];
    JSON_malloc_t malloc;
    JSON_free_t free;
};

#define COUNTOF(x) (sizeof(x)/sizeof(x[0]))

/*
    Characters are mapped into these character classes. This allows for
    a significant reduction in the size of the state transition table.
*/



enum classes {
    C_SPACE,  /* space */
    C_WHITE,  /* other whitespace */
    C_LCURB,  /* {  */
    C_RCURB,  /* } */
    C_LSQRB,  /* [ */
    C_RSQRB,  /* ] */
    C_COLON,  /* : */
    C_COMMA,  /* , */
    C_QUOTE,  /* " */
    C_BACKS,  /* \ */
    C_SLASH,  /* / */
    C_PLUS,   /* + */
    C_MINUS,  /* - */
    C_POINT,  /* . */
    C_ZERO ,  /* 0 */
    C_DIGIT,  /* 123456789 */
    C_LOW_A,  /* a */
    C_LOW_B,  /* b */
    C_LOW_C,  /* c */
    C_LOW_D,  /* d */
    C_LOW_E,  /* e */
    C_LOW_F,  /* f */
    C_LOW_L,  /* l */
    C_LOW_N,  /* n */
    C_LOW_R,  /* r */
    C_LOW_S,  /* s */
    C_LOW_T,  /* t */
    C_LOW_U,  /* u */
    C_ABCDF,  /* ABCDF */
    C_E,      /* E */
    C_ETC,    /* everything else */
    C_STAR,   /* * */
    NR_CLASSES
};

static const signed char ascii_class[128] = {
/*
    This array maps the 128 ASCII characters into character classes.
    The remaining Unicode characters should be mapped to C_ETC.
    Non-whitespace control characters are errors.
*/
    XX,      XX,      XX,      XX,      XX,      XX,      XX,      XX,
    XX,      C_WHITE, C_WHITE, XX,      XX,      C_WHITE, XX,      XX,
    XX,      XX,      XX,      XX,      XX,      XX,      XX,      XX,
    XX,      XX,      XX,      XX,      XX,      XX,      XX,      XX,

    C_SPACE, C_ETC,   C_QUOTE, C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
    C_ETC,   C_ETC,   C_STAR,   C_PLUS, C_COMMA, C_MINUS, C_POINT, C_SLASH,
    C_ZERO,  C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT, C_DIGIT,
    C_DIGIT, C_DIGIT, C_COLON, C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,

    C_ETC,   C_ABCDF, C_ABCDF, C_ABCDF, C_ABCDF, C_E,     C_ABCDF, C_ETC,
    C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
    C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_ETC,
    C_ETC,   C_ETC,   C_ETC,   C_LSQRB, C_BACKS, C_RSQRB, C_ETC,   C_ETC,

    C_ETC,   C_LOW_A, C_LOW_B, C_LOW_C, C_LOW_D, C_LOW_E, C_LOW_F, C_ETC,
    C_ETC,   C_ETC,   C_ETC,   C_ETC,   C_LOW_L, C_ETC,   C_LOW_N, C_ETC,
    C_ETC,   C_ETC,   C_LOW_R, C_LOW_S, C_LOW_T, C_LOW_U, C_ETC,   C_ETC,
    C_ETC,   C_ETC,   C_ETC,   C_LCURB, C_ETC,   C_RCURB, C_ETC,   C_ETC
};


/*
    The state codes.
*/
enum states {
    GO,  /* start    */
    OK,  /* ok       */
    OB,  /* object   */
    KE,  /* key      */
    CO,  /* colon    */
    VA,  /* value    */
    AR,  /* array    */
    ST,  /* string   */
    ESC,  /* escape   */
    U1,  /* u1       */
    U2,  /* u2       */
    U3,  /* u3       */
    U4,  /* u4       */
    MI,  /* minus    */
    ZE,  /* zero     */
    IT,  /* integer  */
    FR,  /* fraction */
    E1,  /* e        */
    E2,  /* ex       */
    E3,  /* exp      */
    T1,  /* tr       */
    T2,  /* tru      */
    T3,  /* true     */
    F1,  /* fa       */
    F2,  /* fal      */
    F3,  /* fals     */
    F4,  /* false    */
    N1,  /* nu       */
    N2,  /* nul      */
    N3,  /* null     */
    C1,  /* /        */
    C2,  /* / *     */
    C3,  /* *        */
    FX,  /* *.* *eE* */
    D1,  /* second UTF-16 character decoding started by \ */
    D2,  /* second UTF-16 character proceeded by u */
    NR_STATES
};

enum actions
{
    CB = -10, /* comment begin */
    CE = -11, /* comment end */
    FA = -12, /* false */
    TR = -13, /* false */
    NU = -14, /* null */
    DE = -15, /* double detected by exponent e E */
    DF = -16, /* double detected by fraction . */
    SB = -17, /* string begin */
    MX = -18, /* integer detected by minus */
    ZX = -19, /* integer detected by zero */
    IX = -20, /* integer detected by 1-9 */
    EX = -21, /* next char is escaped */
    UC = -22  /* Unicode character read */
};


static const signed char state_transition_table[NR_STATES][NR_CLASSES] = {
/*
    The state transition table takes the current state and the current symbol,
    and returns either a new state or an action. An action is represented as a
    negative number. A JSON text is accepted if at the end of the text the
    state is OK and if the mode is MODE_DONE.

                 white                                      1-9                                   ABCDF  etc
             space |  {  }  [  ]  :  ,  "  \  /  +  -  .  0  |  a  b  c  d  e  f  l  n  r  s  t  u  |  E  |  * */
/*start  GO*/ {GO,GO,-6,XX,-5,XX,XX,XX,XX,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*ok     OK*/ {OK,OK,XX,-8,XX,-7,XX,-3,XX,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*object OB*/ {OB,OB,XX,-9,XX,XX,XX,XX,SB,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*key    KE*/ {KE,KE,XX,XX,XX,XX,XX,XX,SB,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*colon  CO*/ {CO,CO,XX,XX,XX,XX,-2,XX,XX,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*value  VA*/ {VA,VA,-6,XX,-5,XX,XX,XX,SB,XX,CB,XX,MX,XX,ZX,IX,XX,XX,XX,XX,XX,FA,XX,NU,XX,XX,TR,XX,XX,XX,XX,XX},
/*array  AR*/ {AR,AR,-6,XX,-5,-7,XX,XX,SB,XX,CB,XX,MX,XX,ZX,IX,XX,XX,XX,XX,XX,FA,XX,NU,XX,XX,TR,XX,XX,XX,XX,XX},
/*string ST*/ {ST,XX,ST,ST,ST,ST,ST,ST,-4,EX,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST,ST},
/*escape ES*/ {XX,XX,XX,XX,XX,XX,XX,XX,ST,ST,ST,XX,XX,XX,XX,XX,XX,ST,XX,XX,XX,ST,XX,ST,ST,XX,ST,U1,XX,XX,XX,XX},
/*u1     U1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,U2,U2,U2,U2,U2,U2,U2,U2,XX,XX,XX,XX,XX,XX,U2,U2,XX,XX},
/*u2     U2*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,U3,U3,U3,U3,U3,U3,U3,U3,XX,XX,XX,XX,XX,XX,U3,U3,XX,XX},
/*u3     U3*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,U4,U4,U4,U4,U4,U4,U4,U4,XX,XX,XX,XX,XX,XX,U4,U4,XX,XX},
/*u4     U4*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,UC,UC,UC,UC,UC,UC,UC,UC,XX,XX,XX,XX,XX,XX,UC,UC,XX,XX},
/*minus  MI*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,ZE,IT,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*zero   ZE*/ {OK,OK,XX,-8,XX,-7,XX,-3,XX,XX,CB,XX,XX,DF,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*int    IT*/ {OK,OK,XX,-8,XX,-7,XX,-3,XX,XX,CB,XX,XX,DF,IT,IT,XX,XX,XX,XX,DE,XX,XX,XX,XX,XX,XX,XX,XX,DE,XX,XX},
/*frac   FR*/ {OK,OK,XX,-8,XX,-7,XX,-3,XX,XX,CB,XX,XX,XX,FR,FR,XX,XX,XX,XX,E1,XX,XX,XX,XX,XX,XX,XX,XX,E1,XX,XX},
/*e      E1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,E2,E2,XX,E3,E3,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*ex     E2*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,E3,E3,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*exp    E3*/ {OK,OK,XX,-8,XX,-7,XX,-3,XX,XX,XX,XX,XX,XX,E3,E3,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*tr     T1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,T2,XX,XX,XX,XX,XX,XX,XX},
/*tru    T2*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,T3,XX,XX,XX,XX},
/*true   T3*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,OK,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*fa     F1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,F2,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*fal    F2*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,F3,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*fals   F3*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,F4,XX,XX,XX,XX,XX,XX},
/*false  F4*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,OK,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*nu     N1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,N2,XX,XX,XX,XX},
/*nul    N2*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,N3,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*null   N3*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,CB,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,OK,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*/      C1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,C2},
/*/star  C2*/ {C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C3},
/**      C3*/ {C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,CE,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C2,C3},
/*_.     FX*/ {OK,OK,XX,-8,XX,-7,XX,-3,XX,XX,XX,XX,XX,XX,FR,FR,XX,XX,XX,XX,E1,XX,XX,XX,XX,XX,XX,XX,XX,E1,XX,XX},
/*\      D1*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,D2,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX},
/*\      D2*/ {XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,XX,U1,XX,XX,XX,XX},
};


/*
    These modes can be pushed on the stack.
*/
enum modes {
    MODE_ARRAY = 1,
    MODE_DONE = 2,
    MODE_KEY = 3,
    MODE_OBJECT = 4
};

static void set_error(JSON_parser jc)
{
    switch (jc->state) {
        case GO:
            switch (jc->current_char) {
            case '{': case '}': case '[': case ']':
                jc->error = JSON_E_UNBALANCED_COLLECTION;
                break;
            default:
                jc->error = JSON_E_INVALID_CHAR;
                break;
            }
            break;
        case OB:
            jc->error = JSON_E_EXPECTED_KEY;
            break;
        case AR:
            jc->error = JSON_E_UNBALANCED_COLLECTION;
            break;
        case CO:
            jc->error = JSON_E_EXPECTED_COLON;
            break;
        case KE:
            jc->error = JSON_E_EXPECTED_KEY;
            break;
        /* \uXXXX\uYYYY */
        case U1: case U2: case U3: case U4: case D1: case D2:
            jc->error = JSON_E_INVALID_UNICODE_SEQUENCE;
            break;
        /* true, false, null */
        case T1: case T2: case T3: case F1: case F2: case F3: case F4: case N1: case N2: case N3:
            jc->error = JSON_E_INVALID_KEYWORD;
            break;
        /* minus, integer, fraction, exponent */
        case MI: case ZE: case IT: case FR: case E1: case E2: case E3:
            jc->error = JSON_E_INVALID_NUMBER;
            break;
        default:
            jc->error = JSON_E_INVALID_CHAR;
            break;
    }
}

static int
push(JSON_parser jc, int mode)
{
/*
    Push a mode onto the stack. Return false if there is overflow.
*/
    assert(jc->top <= jc->stack_capacity);

    if (jc->depth < 0) {
        if (jc->top == jc->stack_capacity) {
            const size_t bytes_to_copy = jc->stack_capacity * sizeof(jc->stack[0]);
            const size_t new_capacity = jc->stack_capacity * 2;
            const size_t bytes_to_allocate = new_capacity * sizeof(jc->stack[0]);
            void* mem = JSON_parser_malloc(jc->malloc, bytes_to_allocate, "stack");
            if (!mem) {
                jc->error = JSON_E_OUT_OF_MEMORY;
                return false;
            }
            jc->stack_capacity = (int)new_capacity;
            memcpy(mem, jc->stack, bytes_to_copy);
            if (jc->stack != &jc->static_stack[0]) {
                jc->free(jc->stack);
            }
            jc->stack = (signed char*)mem;
        }
    } else {
        if (jc->top == jc->depth) {
            jc->error = JSON_E_NESTING_DEPTH_REACHED;
            return false;
        }
    }
    jc->stack[++jc->top] = (signed char)mode;
    return true;
}


static int
pop(JSON_parser jc, int mode)
{
/*
    Pop the stack, assuring that the current mode matches the expectation.
    Return false if there is underflow or if the modes mismatch.
*/
    if (jc->top < 0 || jc->stack[jc->top] != mode) {
        return false;
    }
    jc->top -= 1;
    return true;
}


#define parse_buffer_clear(jc) \
    do {\
        jc->parse_buffer_count = 0;\
        jc->parse_buffer[0] = 0;\
    } while (0)

#define parse_buffer_pop_back_char(jc)\
    do {\
        assert(jc->parse_buffer_count >= 1);\
        --jc->parse_buffer_count;\
        jc->parse_buffer[jc->parse_buffer_count] = 0;\
    } while (0)



void delete_JSON_parser(JSON_parser jc)
{
    if (jc) {
        if (jc->stack != &jc->static_stack[0]) {
            jc->free((void*)jc->stack);
        }
        if (jc->parse_buffer != &jc->static_parse_buffer[0]) {
            jc->free((void*)jc->parse_buffer);
        }
        jc->free((void*)jc);
     }
}

int JSON_parser_reset(JSON_parser jc)
{
    if (NULL == jc) {
        return false;
    }

    jc->state = GO;
    jc->top = -1;

    /* parser has been used previously? */
    if (NULL == jc->parse_buffer) {

        /* Do we want non-bound stack? */
        if (jc->depth > 0) {
            jc->stack_capacity = jc->depth;
            if (jc->depth <= (int)COUNTOF(jc->static_stack)) {
                jc->stack = &jc->static_stack[0];
            } else {
                const size_t bytes_to_alloc = jc->stack_capacity * sizeof(jc->stack[0]);
                jc->stack = (signed char*)JSON_parser_malloc(jc->malloc, bytes_to_alloc, "stack");
                if (jc->stack == NULL) {
                    return false;
                }
            }
        } else {
            jc->stack_capacity = (int)COUNTOF(jc->static_stack);
            jc->depth = -1;
            jc->stack = &jc->static_stack[0];
        }

        /* set up the parse buffer */
        jc->parse_buffer = &jc->static_parse_buffer[0];
        jc->parse_buffer_capacity = COUNTOF(jc->static_parse_buffer);
    }

    /* set parser to start */
    push(jc, MODE_DONE);
    parse_buffer_clear(jc);

    return true;
}

JSON_parser
new_JSON_parser(JSON_config const * config)
{
/*
    new_JSON_parser starts the checking process by constructing a JSON_parser
    object. It takes a depth parameter that restricts the level of maximum
    nesting.

    To continue the process, call JSON_parser_char for each character in the
    JSON text, and then call JSON_parser_done to obtain the final result.
    These functions are fully reentrant.
*/

    int use_std_malloc = false;
    JSON_config default_config;
    JSON_parser jc;
    JSON_malloc_t alloc;

    /* set to default configuration if none was provided */
    if (NULL == config) {
        /* initialize configuration */
        init_JSON_config(&default_config);
        config = &default_config;
    }

    /* use std malloc if either the allocator or deallocator function isn't set */
    use_std_malloc = NULL == config->malloc || NULL == config->free;

    alloc = use_std_malloc ? malloc : config->malloc;

    jc = (JSON_parser)JSON_parser_malloc(alloc, sizeof(*jc), "parser");

    if (NULL == jc) {
        return NULL;
    }

    /* configure the parser */
    memset(jc, 0, sizeof(*jc));
    jc->malloc = alloc;
    jc->free = use_std_malloc ? free : config->free;
    jc->callback = config->callback;
    jc->ctx = config->callback_ctx;
    jc->allow_comments = (signed char)(config->allow_comments != 0);
    jc->handle_floats_manually = (signed char)(config->handle_floats_manually != 0);
    jc->decimal_point = *localeconv()->decimal_point;
    /* We need to be able to push at least one object */
    jc->depth = config->depth == 0 ? 1 : config->depth;

    /* reset the parser */
    if (!JSON_parser_reset(jc)) {
        jc->free(jc);
        return NULL;
    }

    return jc;
}

static int parse_buffer_grow(JSON_parser jc)
{
    const size_t bytes_to_copy = jc->parse_buffer_count * sizeof(jc->parse_buffer[0]);
    const size_t new_capacity = jc->parse_buffer_capacity * 2;
    const size_t bytes_to_allocate = new_capacity * sizeof(jc->parse_buffer[0]);
    void* mem = JSON_parser_malloc(jc->malloc, bytes_to_allocate, "parse buffer");

    if (mem == NULL) {
        jc->error = JSON_E_OUT_OF_MEMORY;
        return false;
    }

    assert(new_capacity > 0);
    memcpy(mem, jc->parse_buffer, bytes_to_copy);

    if (jc->parse_buffer != &jc->static_parse_buffer[0]) {
        jc->free(jc->parse_buffer);
    }

    jc->parse_buffer = (char*)mem;
    jc->parse_buffer_capacity = new_capacity;

    return true;
}

static int parse_buffer_reserve_for(JSON_parser jc, unsigned chars)
{
    while (jc->parse_buffer_count + chars + 1 > jc->parse_buffer_capacity) {
        if (!parse_buffer_grow(jc)) {
            assert(jc->error == JSON_E_OUT_OF_MEMORY);
            return false;
        }
    }

    return true;
}

#define parse_buffer_has_space_for(jc, count) \
    (jc->parse_buffer_count + (count) + 1 <= jc->parse_buffer_capacity)

#define parse_buffer_push_back_char(jc, c)\
    do {\
        assert(parse_buffer_has_space_for(jc, 1)); \
        jc->parse_buffer[jc->parse_buffer_count++] = c;\
        jc->parse_buffer[jc->parse_buffer_count]   = 0;\
    } while (0)

#define assert_is_non_container_type(jc) \
    assert( \
        jc->type == JSON_T_NULL || \
        jc->type == JSON_T_FALSE || \
        jc->type == JSON_T_TRUE || \
        jc->type == JSON_T_FLOAT || \
        jc->type == JSON_T_INTEGER || \
        jc->type == JSON_T_STRING)


static int parse_parse_buffer(JSON_parser jc)
{
    if (jc->callback) {
        JSON_value value, *arg = NULL;

        if (jc->type != JSON_T_NONE) {
            assert_is_non_container_type(jc);

            switch(jc->type) {
                case JSON_T_FLOAT:
                    arg = &value;
                    if (jc->handle_floats_manually) {
                        value.vu.str.value = jc->parse_buffer;
                        value.vu.str.length = jc->parse_buffer_count;
                    } else {
                        /* not checking with end pointer b/c there may be trailing ws */
                        value.vu.float_value = strtod(jc->parse_buffer, NULL);
                    }
                    break;
                case JSON_T_INTEGER:
                    arg = &value;
                    sscanf(jc->parse_buffer, JSON_PARSER_INTEGER_SSCANF_TOKEN, &value.vu.integer_value);
                    break;
                case JSON_T_STRING:
                    arg = &value;
                    value.vu.str.value = jc->parse_buffer;
                    value.vu.str.length = jc->parse_buffer_count;
                    break;
            }

            if (!(*jc->callback)(jc->ctx, jc->type, arg)) {
                return false;
            }
        }
    }

    parse_buffer_clear(jc);

    return true;
}

#define IS_HIGH_SURROGATE(uc) (((uc) & 0xFC00) == 0xD800)
#define IS_LOW_SURROGATE(uc)  (((uc) & 0xFC00) == 0xDC00)
#define DECODE_SURROGATE_PAIR(hi,lo) ((((hi) & 0x3FF) << 10) + ((lo) & 0x3FF) + 0x10000)
static const unsigned char utf8_lead_bits[4] = { 0x00, 0xC0, 0xE0, 0xF0 };

static int decode_unicode_char(JSON_parser jc)
{
    int i;
    unsigned uc = 0;
    char* p;
    int trail_bytes;

    assert(jc->parse_buffer_count >= 6);

    p = &jc->parse_buffer[jc->parse_buffer_count - 4];

    for (i = 12; i >= 0; i -= 4, ++p) {
        unsigned x = *p;

        if (x >= 'a') {
            x -= ('a' - 10);
        } else if (x >= 'A') {
            x -= ('A' - 10);
        } else {
            x &= ~0x30u;
        }

        assert(x < 16);

        uc |= x << i;
    }

    /* clear UTF-16 char from buffer */
    jc->parse_buffer_count -= 6;
    jc->parse_buffer[jc->parse_buffer_count] = 0;

    if (uc == 0xffff || uc == 0xfffe) {
        return false;
    }

    /* attempt decoding ... */
    if (jc->utf16_high_surrogate) {
        if (IS_LOW_SURROGATE(uc)) {
            uc = DECODE_SURROGATE_PAIR(jc->utf16_high_surrogate, uc);
            trail_bytes = 3;
            jc->utf16_high_surrogate = 0;
        } else {
            /* high surrogate without a following low surrogate */
            return false;
        }
    } else {
        if (uc < 0x80) {
            trail_bytes = 0;
        } else if (uc < 0x800) {
            trail_bytes = 1;
        } else if (IS_HIGH_SURROGATE(uc)) {
            /* save the high surrogate and wait for the low surrogate */
            jc->utf16_high_surrogate = (UTF16)uc;
            return true;
        } else if (IS_LOW_SURROGATE(uc)) {
            /* low surrogate without a preceding high surrogate */
            return false;
        } else {
            trail_bytes = 2;
        }
    }

    jc->parse_buffer[jc->parse_buffer_count++] = (char) ((uc >> (trail_bytes * 6)) | utf8_lead_bits[trail_bytes]);

    for (i = trail_bytes * 6 - 6; i >= 0; i -= 6) {
        jc->parse_buffer[jc->parse_buffer_count++] = (char) (((uc >> i) & 0x3F) | 0x80);
    }

    jc->parse_buffer[jc->parse_buffer_count] = 0;

    return true;
}

static int add_escaped_char_to_parse_buffer(JSON_parser jc, int next_char)
{
    assert(parse_buffer_has_space_for(jc, 1));

    jc->escaped = 0;
    /* remove the backslash */
    parse_buffer_pop_back_char(jc);
    switch(next_char) {
        case 'b':
            parse_buffer_push_back_char(jc, '\b');
            break;
        case 'f':
            parse_buffer_push_back_char(jc, '\f');
            break;
        case 'n':
            parse_buffer_push_back_char(jc, '\n');
            break;
        case 'r':
            parse_buffer_push_back_char(jc, '\r');
            break;
        case 't':
            parse_buffer_push_back_char(jc, '\t');
            break;
        case '"':
            parse_buffer_push_back_char(jc, '"');
            break;
        case '\\':
            parse_buffer_push_back_char(jc, '\\');
            break;
        case '/':
            parse_buffer_push_back_char(jc, '/');
            break;
        case 'u':
            parse_buffer_push_back_char(jc, '\\');
            parse_buffer_push_back_char(jc, 'u');
            break;
        default:
            return false;
    }

    return true;
}

static int add_char_to_parse_buffer(JSON_parser jc, int next_char, int next_class)
{
    if (!parse_buffer_reserve_for(jc, 1)) {
        assert(JSON_E_OUT_OF_MEMORY == jc->error);
        return false;
    }

    if (jc->escaped) {
        if (!add_escaped_char_to_parse_buffer(jc, next_char)) {
            jc->error = JSON_E_INVALID_ESCAPE_SEQUENCE;
            return false;
        }
    } else if (!jc->comment) {
        if ((jc->type != JSON_T_NONE) | !((next_class == C_SPACE) | (next_class == C_WHITE)) /* non-white-space */) {
            parse_buffer_push_back_char(jc, (char)next_char);
        }
    }

    return true;
}

#define assert_type_isnt_string_null_or_bool(jc) \
    assert(jc->type != JSON_T_FALSE); \
    assert(jc->type != JSON_T_TRUE); \
    assert(jc->type != JSON_T_NULL); \
    assert(jc->type != JSON_T_STRING)


int
JSON_parser_char(JSON_parser jc, int next_char)
{
/*
    After calling new_JSON_parser, call this function for each character (or
    partial character) in your JSON text. It can accept UTF-8, UTF-16, or
    UTF-32. It returns true if things are looking ok so far. If it rejects the
    text, it returns false.
*/
    int next_class, next_state;

/*
    Store the current char for error handling
*/
    jc->current_char = next_char;

/*
    Determine the character's class.
*/
    if (next_char < 0) {
        jc->error = JSON_E_INVALID_CHAR;
        return false;
    }
    if (next_char >= 128) {
        next_class = C_ETC;
    } else {
        next_class = ascii_class[next_char];
        if (next_class <= XX) {
            set_error(jc);
            return false;
        }
    }

    if (!add_char_to_parse_buffer(jc, next_char, next_class)) {
        return false;
    }

/*
    Get the next state from the state transition table.
*/
    next_state = state_transition_table[jc->state][next_class];
    if (next_state >= 0) {
/*
    Change the state.
*/
        jc->state = (signed char)next_state;
    } else {
/*
    Or perform one of the actions.
*/
        switch (next_state) {
/* Unicode character */
        case UC:
            if(!decode_unicode_char(jc)) {
                jc->error = JSON_E_INVALID_UNICODE_SEQUENCE;
                return false;
            }
            /* check if we need to read a second UTF-16 char */
            if (jc->utf16_high_surrogate) {
                jc->state = D1;
            } else {
                jc->state = ST;
            }
            break;
/* escaped char */
        case EX:
            jc->escaped = 1;
            jc->state = ESC;
            break;
/* integer detected by minus */
        case MX:
            jc->type = JSON_T_INTEGER;
            jc->state = MI;
            break;
/* integer detected by zero */
        case ZX:
            jc->type = JSON_T_INTEGER;
            jc->state = ZE;
            break;
/* integer detected by 1-9 */
        case IX:
            jc->type = JSON_T_INTEGER;
            jc->state = IT;
            break;

/* floating point number detected by exponent*/
        case DE:
            assert_type_isnt_string_null_or_bool(jc);
            jc->type = JSON_T_FLOAT;
            jc->state = E1;
            break;

/* floating point number detected by fraction */
        case DF:
            assert_type_isnt_string_null_or_bool(jc);
            if (!jc->handle_floats_manually) {
/*
    Some versions of strtod (which underlies sscanf) don't support converting
    C-locale formated floating point values.
*/
                assert(jc->parse_buffer[jc->parse_buffer_count-1] == '.');
                jc->parse_buffer[jc->parse_buffer_count-1] = jc->decimal_point;
            }
            jc->type = JSON_T_FLOAT;
            jc->state = FX;
            break;
/* string begin " */
        case SB:
            parse_buffer_clear(jc);
            assert(jc->type == JSON_T_NONE);
            jc->type = JSON_T_STRING;
            jc->state = ST;
            break;

/* n */
        case NU:
            assert(jc->type == JSON_T_NONE);
            jc->type = JSON_T_NULL;
            jc->state = N1;
            break;
/* f */
        case FA:
            assert(jc->type == JSON_T_NONE);
            jc->type = JSON_T_FALSE;
            jc->state = F1;
            break;
/* t */
        case TR:
            assert(jc->type == JSON_T_NONE);
            jc->type = JSON_T_TRUE;
            jc->state = T1;
            break;

/* closing comment */
        case CE:
            jc->comment = 0;
            assert(jc->parse_buffer_count == 0);
            assert(jc->type == JSON_T_NONE);
            jc->state = jc->before_comment_state;
            break;

/* opening comment  */
        case CB:
            if (!jc->allow_comments) {
                return false;
            }
            parse_buffer_pop_back_char(jc);
            if (!parse_parse_buffer(jc)) {
                return false;
            }
            assert(jc->parse_buffer_count == 0);
            assert(jc->type != JSON_T_STRING);
            switch (jc->stack[jc->top]) {
            case MODE_ARRAY:
            case MODE_OBJECT:
                switch(jc->state) {
                case VA:
                case AR:
                    jc->before_comment_state = jc->state;
                    break;
                default:
                    jc->before_comment_state = OK;
                    break;
                }
                break;
            default:
                jc->before_comment_state = jc->state;
                break;
            }
            jc->type = JSON_T_NONE;
            jc->state = C1;
            jc->comment = 1;
            break;
/* empty } */
        case -9:
            parse_buffer_clear(jc);
            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_END, NULL)) {
                return false;
            }
            if (!pop(jc, MODE_KEY)) {
                return false;
            }
            jc->state = OK;
            break;

/* } */ case -8:
            parse_buffer_pop_back_char(jc);
            if (!parse_parse_buffer(jc)) {
                return false;
            }
            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_END, NULL)) {
                return false;
            }
            if (!pop(jc, MODE_OBJECT)) {
                jc->error = JSON_E_UNBALANCED_COLLECTION;
                return false;
            }
            jc->type = JSON_T_NONE;
            jc->state = OK;
            break;

/* ] */ case -7:
            parse_buffer_pop_back_char(jc);
            if (!parse_parse_buffer(jc)) {
                return false;
            }
            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_ARRAY_END, NULL)) {
                return false;
            }
            if (!pop(jc, MODE_ARRAY)) {
                jc->error = JSON_E_UNBALANCED_COLLECTION;
                return false;
            }

            jc->type = JSON_T_NONE;
            jc->state = OK;
            break;

/* { */ case -6:
            parse_buffer_pop_back_char(jc);
            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_OBJECT_BEGIN, NULL)) {
                return false;
            }
            if (!push(jc, MODE_KEY)) {
                return false;
            }
            assert(jc->type == JSON_T_NONE);
            jc->state = OB;
            break;

/* [ */ case -5:
            parse_buffer_pop_back_char(jc);
            if (jc->callback && !(*jc->callback)(jc->ctx, JSON_T_ARRAY_BEGIN, NULL)) {
                return false;
            }
            if (!push(jc, MODE_ARRAY)) {
                return false;
            }
            assert(jc->type == JSON_T_NONE);
            jc->state = AR;
            break;

/* string end " */ case -4:
            parse_buffer_pop_back_char(jc);
            switch (jc->stack[jc->top]) {
            case MODE_KEY:
                assert(jc->type == JSON_T_STRING);
                jc->type = JSON_T_NONE;
                jc->state = CO;

                if (jc->callback) {
                    JSON_value value;
                    value.vu.str.value = jc->parse_buffer;
                    value.vu.str.length = jc->parse_buffer_count;
                    if (!(*jc->callback)(jc->ctx, JSON_T_KEY, &value)) {
                        return false;
                    }
                }
                parse_buffer_clear(jc);
                break;
            case MODE_ARRAY:
            case MODE_OBJECT:
                assert(jc->type == JSON_T_STRING);
                if (!parse_parse_buffer(jc)) {
                    return false;
                }
                jc->type = JSON_T_NONE;
                jc->state = OK;
                break;
            default:
                return false;
            }
            break;

/* , */ case -3:
            parse_buffer_pop_back_char(jc);
            if (!parse_parse_buffer(jc)) {
                return false;
            }
            switch (jc->stack[jc->top]) {
            case MODE_OBJECT:
/*
    A comma causes a flip from object mode to key mode.
*/
                if (!pop(jc, MODE_OBJECT) || !push(jc, MODE_KEY)) {
                    return false;
                }
                assert(jc->type != JSON_T_STRING);
                jc->type = JSON_T_NONE;
                jc->state = KE;
                break;
            case MODE_ARRAY:
                assert(jc->type != JSON_T_STRING);
                jc->type = JSON_T_NONE;
                jc->state = VA;
                break;
            default:
                return false;
            }
            break;

/* : */ case -2:
/*
    A colon causes a flip from key mode to object mode.
*/
            parse_buffer_pop_back_char(jc);
            if (!pop(jc, MODE_KEY) || !push(jc, MODE_OBJECT)) {
                return false;
            }
            assert(jc->type == JSON_T_NONE);
            jc->state = VA;
            break;
/*
    Bad action.
*/
        default:
            set_error(jc);
            return false;
        }
    }
    return true;
}

int
JSON_parser_done(JSON_parser jc)
{
    if ((jc->state == OK || jc->state == GO) && pop(jc, MODE_DONE))
    {
        return true;
    }

    jc->error = JSON_E_UNBALANCED_COLLECTION;
    return false;
}


int JSON_parser_is_legal_white_space_string(const char* s)
{
    int c, char_class;

    if (s == NULL) {
        return false;
    }

    for (; *s; ++s) {
        c = *s;

        if (c < 0 || c >= 128) {
            return false;
        }

        char_class = ascii_class[c];

        if (char_class != C_SPACE && char_class != C_WHITE) {
            return false;
        }
    }

    return true;
}

int JSON_parser_get_last_error(JSON_parser jc)
{
    return jc->error;
}


void init_JSON_config(JSON_config* config)
{
    if (config) {
        memset(config, 0, sizeof(*config));

        config->depth = JSON_PARSER_STACK_SIZE - 1;
        config->malloc = malloc;
        config->free = free;
    }
}

#undef XX
#undef COUNTOF
#undef parse_buffer_clear
#undef parse_buffer_pop_back_char
/* end file parser/JSON_parser.c */
/* begin file ./cson.c */
#include <assert.h>
#include <stdlib.h> /* malloc()/free() */
#include <string.h>
#include <errno.h>

#ifdef _MSC_VER
#   if _MSC_VER >= 1400 /* Visual Studio 2005 and up */
#     pragma warning( push )
#     pragma warning(disable:4996) /* unsecure sscanf (but snscanf() isn't in c89) */
#     pragma warning(disable:4244) /* complaining about data loss due
                                      to integer precision in the
                                      sqlite3 utf decoding routines */
#   endif
#endif

#if 1
#include <stdio.h>
#define MARKER if(1) printf("MARKER: %s:%d:%s():\t",__FILE__,__LINE__,__func__); if(1) printf
#else
static void noop_printf(char const * fmt, ...) {}
#define MARKER if(0) printf
#endif

#if defined(__cplusplus)
extern "C" {
#endif


/**
   This type holds the "vtbl" for type-specific operations when
   working with cson_value objects.

   All cson_values of a given logical type share a pointer to a single
   library-internal instance of this class.
*/
struct cson_value_api
{
    /**
       The logical JavaScript/JSON type associated with
       this object.
     */
    const cson_type_id typeID;
    /**
       Must free any memory associated with self,
       but not free self. If self is NULL then
       this function must do nothing.
    */
    void (*cleanup)( cson_value * self );
    /**
       POSSIBLE TODOs:

       // Deep copy.
       int (*clone)( cson_value const * self, cson_value ** tgt );

       // Using JS semantics for true/value
       char (*bool_value)( cson_value const * self );

       // memcmp() return value semantics
       int (*compare)( cson_value const * self, cson_value const * other );
     */
};

typedef struct cson_value_api cson_value_api;

/**
   Empty-initialized cson_value_api object.
*/
#define cson_value_api_empty_m {           \
        CSON_TYPE_UNDEF/*typeID*/,         \
        NULL/*cleanup*/\
      }
/**
   Empty-initialized cson_value_api object.
*/
/*static const cson_value_api cson_value_api_empty = cson_value_api_empty_m;*/


typedef unsigned int cson_counter_t;
struct cson_value
{
    /** The "vtbl" of type-specific operations. All instances
        of a given logical value type share a single api instance.

        Results are undefined if this value is NULL.
    */
    cson_value_api const * api;

    /** The raw value. Its interpretation depends on the value of the
        api member. Some value types require dynamically-allocated
        memory, so one must always call cson_value_free() to destroy a
        value when it is no longer needed. For stack-allocated values
        (which client could SHOULD NOT USE unless they are intimately
        familiar with the memory management rules and don't mind an
        occasional leak or crash), use cson_value_clean() instead of
        cson_value_free().
    */
    void * value;

    /**
       We use this to allow us to store cson_value instances in
       multiple containers or multiple times within a single container
       (provided no cycles are introduced).

       Notes about the rc implementation:

       - The refcount is for the cson_value instance itself, not its
       value pointer.

       - Instances start out with a refcount of 0 (not 1). Adding them
       to a container will increase the refcount. Cleaning up the container
       will decrement the count.

       - cson_value_free() decrements the refcount (if it is not already
       0) and cleans/frees the value only when the refcount is 0.

       - Some places in the internals add an "extra" reference to
       objects to avoid a premature deletion. Don't try this at home.
    */
    cson_counter_t refcount;
};


/**
   Empty-initialized cson_value object.
*/
const cson_parse_opt cson_parse_opt_empty = cson_parse_opt_empty_m;
const cson_output_opt cson_output_opt_empty = cson_output_opt_empty_m;
const cson_object_iterator cson_object_iterator_empty = cson_object_iterator_empty_m;
const cson_buffer cson_buffer_empty = cson_buffer_empty_m;
const cson_parse_info cson_parse_info_empty = cson_parse_info_empty_m;

static void cson_value_destroy_zero_it( cson_value * self );
static void cson_value_destroy_object( cson_value * self );
/**
   If self is-a array then this function destroys its contents,
   else this function does nothing.
*/
static void cson_value_destroy_array( cson_value * self );

static const cson_value_api cson_value_api_null = { CSON_TYPE_NULL, cson_value_destroy_zero_it };
static const cson_value_api cson_value_api_undef = { CSON_TYPE_UNDEF, cson_value_destroy_zero_it };
static const cson_value_api cson_value_api_bool = { CSON_TYPE_BOOL, cson_value_destroy_zero_it };
static const cson_value_api cson_value_api_integer = { CSON_TYPE_INTEGER, cson_value_destroy_zero_it };
static const cson_value_api cson_value_api_double = { CSON_TYPE_DOUBLE, cson_value_destroy_zero_it };
static const cson_value_api cson_value_api_string = { CSON_TYPE_STRING, cson_value_destroy_zero_it };
static const cson_value_api cson_value_api_array = { CSON_TYPE_ARRAY, cson_value_destroy_array };
static const cson_value_api cson_value_api_object = { CSON_TYPE_OBJECT, cson_value_destroy_object };

static const cson_value cson_value_undef = { &cson_value_api_undef, NULL, 0 };
static const cson_value cson_value_integer_empty = { &cson_value_api_integer, NULL, 0 };
static const cson_value cson_value_double_empty = { &cson_value_api_double, NULL, 0 };
static const cson_value cson_value_string_empty = { &cson_value_api_string, NULL, 0 };
static const cson_value cson_value_array_empty = { &cson_value_api_array, NULL, 0 };
static const cson_value cson_value_object_empty = { &cson_value_api_object, NULL, 0 };

/**
   Strings are allocated as an instances of this class with N+1
   trailing bytes, where N is the length of the string being
   allocated. To convert a cson_string to c-string we simply increment
   the cson_string pointer. To do the opposite we use (cstr -
   sizeof(cson_string)). Zero-length strings are a special case
   handled by a couple of the cson_string functions.
*/
struct cson_string
{
    unsigned int length;
};
#define cson_string_empty_m {0/*length*/}
static const cson_string cson_string_empty = cson_string_empty_m;


/**
   Assumes V is a (cson_value*) ans V->value is a (T*). Returns
   V->value cast to a (T*).
*/
#define CSON_CAST(T,V) ((T*)((V)->value))
/**
   Assumes V is a pointer to memory which is allocated as part of a
   cson_value instance (the bytes immediately after that part).
   Returns a pointer a a cson_value by subtracting sizeof(cson_value)
   from that address and casting it to a (cson_value*)
*/
#define CSON_VCAST(V) ((cson_value *)(((unsigned char *)(V))-sizeof(cson_value)))

/**
   CSON_INT(V) assumes that V is a (cson_value*) of type
   CSON_TYPE_INTEGER. This macro returns a (cson_int_t*) representing
   its value (how that is stored depends on whether we are running in
   32- or 64-bit mode).
 */
#if CSON_VOID_PTR_IS_BIG
#  define CSON_INT(V) ((cson_int_t*)(&((V)->value)))
#else
#  define CSON_INT(V) ((cson_int_t*)(V)->value)
#endif

#define CSON_DBL(V) CSON_CAST(cson_double_t,(V))
#define CSON_STR(V) CSON_CAST(cson_string,(V))
#define CSON_OBJ(V) CSON_CAST(cson_object,(V))
#define CSON_ARRAY(V) CSON_CAST(cson_array,(V))

/**
 Holds special shared "constant" (though they are non-const)
 values. 
*/
static struct CSON_EMPTY_HOLDER_
{
    char trueValue;
    cson_string stringValue;
} CSON_EMPTY_HOLDER = {
    1/*trueValue*/,
    cson_string_empty_m
};

/**
    Indexes into the CSON_SPECIAL_VALUES array.
    
    If this enum changes in any way,
    makes damned sure that CSON_SPECIAL_VALUES is updated
    to match!!!
*/
enum CSON_INTERNAL_VALUES {
    
    CSON_VAL_UNDEF = 0,
    CSON_VAL_NULL = 1,
    CSON_VAL_TRUE = 2,
    CSON_VAL_FALSE = 3,
    CSON_VAL_INT_0 = 4,
    CSON_VAL_DBL_0 = 5,
    CSON_VAL_STR_EMPTY = 6,
    CSON_INTERNAL_VALUES_LENGTH
};

/**
  Some "special" shared cson_value instances.

  These values MUST be initialized in the order specified
  by the CSON_INTERNAL_VALUES enum.
   
  Note that they are not const because they are used as
  shared-allocation objects in non-const contexts. However, the
  public API provides no way to modifying them, and clients who
  modify values directly are subject to The Wrath of Undefined
  Behaviour.
*/
static cson_value CSON_SPECIAL_VALUES[] = {
{ &cson_value_api_undef, NULL, 0 }, /* UNDEF */
{ &cson_value_api_null, NULL, 0 }, /* NULL */
{ &cson_value_api_bool, &CSON_EMPTY_HOLDER.trueValue, 0 }, /* TRUE */
{ &cson_value_api_bool, NULL, 0 }, /* FALSE */
{ &cson_value_api_integer, NULL, 0 }, /* INT_0 */
{ &cson_value_api_double, NULL, 0 }, /* DBL_0 */
{ &cson_value_api_string, &CSON_EMPTY_HOLDER.stringValue, 0 }, /* STR_EMPTY */
{ NULL, NULL, 0 }
};


/**
    Returns non-0 (true) if m is one of our special
    "built-in" values, e.g. from CSON_SPECIAL_VALUES and some
    "empty" values.
     
    If this returns true, m MUST NOT be free()d!
 */
static char cson_value_is_builtin( void const * m )
{
    if((m >= (void const *)&CSON_EMPTY_HOLDER)
        && ( m < (void const *)(&CSON_EMPTY_HOLDER+1)))
        return 1;
    else return
        ((m >= (void const *)&CSON_SPECIAL_VALUES[0])
        && ( m < (void const *)&CSON_SPECIAL_VALUES[CSON_INTERNAL_VALUES_LENGTH]) )
        ? 1
        : 0;
}

char const * cson_rc_string(int rc)
{
    switch(rc){
#define CHECK(N) case CSON_RC_##N: return #N;
    CHECK(OK);
    CHECK(ArgError);
    CHECK(RangeError);
    CHECK(TypeError);
    CHECK(IOError);
    CHECK(AllocError);
    CHECK(NYIError);
    CHECK(InternalError);
    CHECK(UnsupportedError);
    CHECK(NotFoundError);
    CHECK(UnknownError);
    CHECK(Parse_INVALID_CHAR);
    CHECK(Parse_INVALID_KEYWORD);
    CHECK(Parse_INVALID_ESCAPE_SEQUENCE);
    CHECK(Parse_INVALID_UNICODE_SEQUENCE);
    CHECK(Parse_INVALID_NUMBER);
    CHECK(Parse_NESTING_DEPTH_REACHED);
    CHECK(Parse_UNBALANCED_COLLECTION);
    CHECK(Parse_EXPECTED_KEY);
    CHECK(Parse_EXPECTED_COLON);
    default: return "UnknownError";
    }
#undef CHECK
}

/**
   If CSON_LOG_ALLOC is true then the cson_malloc/realloc/free() routines
   will log a message to stderr.
*/
#define CSON_LOG_ALLOC 0


/**
   CSON_FOSSIL_MODE is only for use in the Fossil
   source tree, so that we can plug in to its allocators.
   We can't do this by, e.g., defining macros for the
   malloc/free funcs because fossil's lack of header files
   means we would have to #include "main.c" here to
   get the declarations.
 */
#if defined(CSON_FOSSIL_MODE)
extern void *fossil_malloc(size_t n);
extern void fossil_free(void *p);
extern void *fossil_realloc(void *p, size_t n);
#  define CSON_MALLOC_IMPL fossil_malloc
#  define CSON_FREE_IMPL fossil_free
#  define CSON_REALLOC_IMPL fossil_realloc
#endif

#if !defined CSON_MALLOC_IMPL
#  define CSON_MALLOC_IMPL malloc
#endif
#if !defined CSON_FREE_IMPL
#  define CSON_FREE_IMPL free
#endif
#if !defined CSON_REALLOC_IMPL
#  define CSON_REALLOC_IMPL realloc
#endif

/**
   A test/debug macro for simulating an OOM after the given number of
   bytes have been allocated.
*/
#define CSON_SIMULATE_OOM 0
#if CSON_SIMULATE_OOM
static unsigned int cson_totalAlloced = 0;
#endif

/** Simple proxy for malloc(). descr is a description of the allocation. */
static void * cson_malloc( size_t n, char const * descr )
{
#if CSON_LOG_ALLOC
    fprintf(stderr, "Allocating %u bytes [%s].\n", (unsigned int)n, descr);
#endif
#if CSON_SIMULATE_OOM
    cson_totalAlloced += n;
    if( cson_totalAlloced > CSON_SIMULATE_OOM )
    {
        return NULL;
    }
#endif
    return CSON_MALLOC_IMPL(n);
}

/** Simple proxy for free(). descr is a description of the memory being freed. */
static void cson_free( void * p, char const * descr )
{
#if CSON_LOG_ALLOC
    fprintf(stderr, "Freeing @%p [%s].\n", p, descr);
#endif
    if( !cson_value_is_builtin(p) )
    {
        CSON_FREE_IMPL( p );
    }
}
/** Simple proxy for realloc(). descr is a description of the (re)allocation. */
static void * cson_realloc( void * hint, size_t n, char const * descr )
{
#if CSON_LOG_ALLOC
    fprintf(stderr, "%sllocating %u bytes [%s].\n",
            hint ? "Rea" : "A",
            (unsigned int)n, descr);
#endif
#if CSON_SIMULATE_OOM
    cson_totalAlloced += n;
    if( cson_totalAlloced > CSON_SIMULATE_OOM )
    {
        return NULL;
    }
#endif
    if( 0==n )
    {
         cson_free(hint, descr);
         return NULL;
    }
    else
    {
        return CSON_REALLOC_IMPL( hint, n );
    }
}


#undef CSON_LOG_ALLOC
#undef CSON_SIMULATE_OOM



/**
   CLIENTS CODE SHOULD NEVER USE THIS because it opens up doors to
   memory leaks if it is not used in very controlled circumstances.
   Users must be very aware of how the underlying memory management
   works.

   Frees any resources owned by val, but does not free val itself
   (which may be stack-allocated). If !val or val->api or
   val->api->cleanup are NULL then this is a no-op.

   If v is a container type (object or array) its children are also
   cleaned up, recursively.

   After calling this, val will have the special "undefined" type.
*/
static void cson_value_clean( cson_value * val );

/**
   Increments cv's reference count by 1.  As a special case, values
   for which cson_value_is_builtin() returns true are not
   modified. assert()s if (NULL==cv).
*/
static void cson_refcount_incr( cson_value * cv )
{
    assert( NULL != cv );
    if( cson_value_is_builtin( cv ) )
    { /* do nothing: we do not want to modify the shared
         instances.
      */
        return;
    }
    else
    {
        ++cv->refcount;
    }
}

#if 0
int cson_value_refcount_set( cson_value * cv, unsigned short rc )
{
    if( NULL == cv ) return CSON_RC_ArgError;
    else
    {
        cv->refcount = rc;
        return 0;
    }
}
#endif

int cson_value_add_reference( cson_value * cv )
{
    if( NULL == cv ) return CSON_RC_ArgError;
    else if( (cv->refcount+1) < cv->refcount )
    {
        return CSON_RC_RangeError;
    }
    else
    {
        cson_refcount_incr( cv );
        return 0;
    }
}

/**
   If cv is NULL or cson_value_is_builtin(cv) returns true then this
   function does nothing and returns 0, otherwise...  If
   cv->refcount is 0 or 1 then cson_value_clean(cv) is called, cv is
   freed, and 0 is returned. If cv->refcount is any other value then
   it is decremented and the new value is returned.
*/
static cson_counter_t cson_refcount_decr( cson_value * cv )
{
    if( (NULL == cv) || cson_value_is_builtin(cv) ) return 0;
    else if( (0 == cv->refcount) || (0 == --cv->refcount) )
    {
        cson_value_clean(cv);
        cson_free(cv,"cson_value::refcount=0");
        return 0;
    }
    else return cv->refcount;
}

unsigned int cson_string_length_bytes( cson_string const * str )
{
    return str ? str->length : 0;
}


/**
   Fetches v's string value as a non-const string.

   cson_strings are intended to be immutable, but this form provides
   access to the immutable bits, which are v->length bytes long. A
   length-0 string is returned as NULL from here, as opposed to
   "". (This is a side-effect of the string allocation mechanism.)
   Returns NULL if !v or if v is the internal empty-string singleton.
*/
static char * cson_string_str(cson_string *v)
{
    /*
      See http://groups.google.com/group/comp.lang.c.moderated/browse_thread/thread/2e0c0df5e8a0cd6a
    */
#if 1
    if( !v || (&CSON_EMPTY_HOLDER.stringValue == v) ) return NULL;
    else return (char *)((unsigned char *)( v+1 ));
#else
    static char empty[2] = {0,0};
    return ( NULL == v )
        ? NULL
        : (v->length
           ? (char *) (((unsigned char *)v) + sizeof(cson_string))
           : empty)
        ;
#endif
}

/**
   Fetches v's string value as a const string.
*/
char const * cson_string_cstr(cson_string const *v)
{
    /*
      See http://groups.google.com/group/comp.lang.c.moderated/browse_thread/thread/2e0c0df5e8a0cd6a
    */
#if 1
    if( ! v ) return NULL;
    else if( v == &CSON_EMPTY_HOLDER.stringValue ) return "";
    else {
        assert((0 < v->length) && "How do we have a non-singleton empty string?");
        return (char const *)((unsigned char const *)(v+1));
    }
#else
    return (NULL == v)
        ? NULL
        : (v->length
           ? (char const *) ((unsigned char const *)(v+1))
           : "");
#endif
}


#if 0
/**
   Just like strndup(3), in that neither are C89/C99-standard and both
   are documented in detail in strndup(3).
*/
static char * cson_strdup( char const * src, size_t n )
{
    char * rc = (char *)cson_malloc(n+1, "cson_strdup");
    if( ! rc ) return NULL;
    memset( rc, 0, n+1 );
    rc[n] = 0;
    return strncpy( rc, src, n );
}
#endif

int cson_string_cmp_cstr_n( cson_string const * str, char const * other, unsigned int otherLen )
{
    if( ! other && !str ) return 0;
    else if( other && !str ) return 1;
    else if( str && !other ) return -1;
    else if( !otherLen ) return  str->length ? 1 : 0;
    else if( !str->length ) return otherLen ? -1 : 0;
    else
    {
        unsigned const int max = (otherLen > str->length) ? otherLen : str->length;
        int const rc = strncmp( cson_string_cstr(str), other, max );
        return ( (0 == rc) && (otherLen != str->length) )
            ? (str->length < otherLen) ? -1 : 1
            : rc;
    }
}

int cson_string_cmp_cstr( cson_string const * lhs, char const * rhs )
{
    return cson_string_cmp_cstr_n( lhs, rhs, (rhs&&*rhs) ? strlen(rhs) : 0 );
}
int cson_string_cmp( cson_string const * lhs, cson_string const * rhs )
{
    return cson_string_cmp_cstr_n( lhs, cson_string_cstr(rhs), rhs ? rhs->length : 0 );
}


/**
   If self is not NULL, *self is overwritten to have the undefined
   type. self is not cleaned up or freed.
*/
void cson_value_destroy_zero_it( cson_value * self )
{
    if( self )
    {
        *self = cson_value_undef;
    }
}

/**
   A key/value pair collection.

   Each of these objects owns its key/value pointers, and they
   are cleaned up by cson_kvp_clean().
*/
struct cson_kvp
{
    cson_value * key;
    cson_value * value;
};
#define cson_kvp_empty_m {NULL,NULL}
static const cson_kvp cson_kvp_empty = cson_kvp_empty_m;

/** @def CSON_OBJECT_PROPS_SORT

    Don't use this - it has not been updated to account for internal
    changes in cson_object.

   If CSON_OBJECT_PROPS_SORT is set to a true value then
   qsort() and bsearch() are used to sort (upon insertion)
   and search cson_object::kvp property lists. This costs us
   a re-sort on each insertion but searching is O(log n)
   average/worst case (and O(1) best-case).

   i'm not yet convinced that the overhead of the qsort() justifies
   the potentially decreased search times - it has not been
   measured. Object property lists tend to be relatively short in
   JSON, and a linear search which uses the cson_string::length
   property as a quick check is quite fast when one compares it with
   the sort overhead required by the bsearch() approach.
*/
#define CSON_OBJECT_PROPS_SORT 0

/** @def CSON_OBJECT_PROPS_SORT_USE_LENGTH

    Don't use this - i'm not sure that it works how i'd like.

    If CSON_OBJECT_PROPS_SORT_USE_LENGTH is true then
    we use string lengths as quick checks when sorting
    property keys. This leads to a non-intuitive sorting
    order but "should" be faster.

    This is ignored if CSON_OBJECT_PROPS_SORT is false.

*/
#define CSON_OBJECT_PROPS_SORT_USE_LENGTH 0

#if CSON_OBJECT_PROPS_SORT

/**
   cson_kvp comparator for use with qsort(). ALMOST compares with
   strcmp() semantics, but it uses the strings' lengths as a quicker
   approach. This might give non-intuitive results, but it's faster.
 */
static int cson_kvp_cmp( void const * lhs, void const * rhs )
{
    cson_kvp const * lk = *((cson_kvp const * const*)lhs);
    cson_kvp const * rk = *((cson_kvp const * const*)rhs);
    cson_string const * l = cson_string_value(lk->key);
    cson_string const * r = cson_string_value(rk->key);
#if CSON_OBJECT_PROPS_SORT_USE_LENGTH
    if( l->length < r->length ) return -1;
    else if( l->length > r->length ) return 1;
    else return strcmp( cson_string_cstr( l ), cson_string_cstr( r ) );
#else
    return strcmp( cson_string_cstr( l ),
                   cson_string_cstr( r ) );
#endif /*CSON_OBJECT_PROPS_SORT_USE_LENGTH*/
}
#endif /*CSON_OBJECT_PROPS_SORT*/


#if CSON_OBJECT_PROPS_SORT
#error "Need to rework this for cson_string-to-cson_value refactoring"
/**
   A bsearch() comparison function which requires that lhs be a (char
   const *) and rhs be-a (cson_kvp const * const *). It compares lhs
   to rhs->key's value, using strcmp() semantics.
 */
static int cson_kvp_cmp_vs_cstr( void const * lhs, void const * rhs )
{
    char const * lk = (char const *)lhs;
    cson_kvp const * rk =
        *((cson_kvp const * const*)rhs)
        ;
#if CSON_OBJECT_PROPS_SORT_USE_LENGTH
    unsigned int llen = strlen(lk);
    if( llen < rk->key->length ) return -1;
    else if( llen > rk->key->length ) return 1;
    else return strcmp( lk, cson_string_cstr( rk->key ) );
#else
    return strcmp( lk, cson_string_cstr( rk->key ) );
#endif /*CSON_OBJECT_PROPS_SORT_USE_LENGTH*/
}
#endif /*CSON_OBJECT_PROPS_SORT*/


struct cson_kvp_list
{
    cson_kvp ** list;
    unsigned int count;
    unsigned int alloced;
};
typedef struct cson_kvp_list cson_kvp_list;
#define cson_kvp_list_empty_m {NULL/*list*/,0/*count*/,0/*alloced*/}
/*static const cson_kvp_list cson_kvp_list_empty = cson_kvp_list_empty_m;*/

struct cson_object
{
    cson_kvp_list kvp;
};
/*typedef struct cson_object cson_object;*/
#define cson_object_empty_m { cson_kvp_list_empty_m/*kvp*/ }
static const cson_object cson_object_empty = cson_object_empty_m;

struct cson_value_list
{
    cson_value ** list;
    unsigned int count;
    unsigned int alloced;
};
typedef struct cson_value_list cson_value_list;
#define cson_value_list_empty_m {NULL/*list*/,0/*count*/,0/*alloced*/}
static const cson_value_list cson_value_list_empty = cson_value_list_empty_m;

struct cson_array
{
    cson_value_list list;
};
/*typedef struct cson_array cson_array;*/
#define cson_array_empty_m { cson_value_list_empty_m/*list*/ }
static const cson_array cson_array_empty = cson_array_empty_m;


struct cson_parser
{
    JSON_parser p;
    cson_value * root;
    cson_value * node;
    cson_array stack;
    cson_string * ckey;
    int errNo;
    unsigned int totalKeyCount;
    unsigned int totalValueCount;
};
typedef struct cson_parser cson_parser;
static const cson_parser cson_parser_empty = {
NULL/*p*/,
NULL/*root*/,
NULL/*node*/,
cson_array_empty_m/*stack*/,
NULL/*ckey*/,
0/*errNo*/,
0/*totalKeyCount*/,
0/*totalValueCount*/
};

#if 1
/* The following funcs are declared in generated code (cson_lists.h),
   but we need early access to their decls for the Amalgamation build.
*/
static unsigned int cson_value_list_reserve( cson_value_list * self, unsigned int n );
static unsigned int cson_kvp_list_reserve( cson_kvp_list * self, unsigned int n );
static int cson_kvp_list_append( cson_kvp_list * self, cson_kvp * cp );
static void cson_kvp_list_clean( cson_kvp_list * self,
                                 void (*cleaner)(cson_kvp * obj) );
#if 0
static int cson_value_list_append( cson_value_list * self, cson_value * cp );
static void cson_value_list_clean( cson_value_list * self, void (*cleaner)(cson_value * obj));
static int cson_kvp_list_visit( cson_kvp_list * self,
                                int (*visitor)(cson_kvp * obj, void * visitorState ),
                                void * visitorState );
static int cson_value_list_visit( cson_value_list * self,
                                  int (*visitor)(cson_value * obj, void * visitorState ),
                                  void * visitorState );
#endif
#endif
    
#if 0
#  define LIST_T cson_value_list
#  define VALUE_T cson_value *
#  define VALUE_T_IS_PTR 1
#  define LIST_T cson_kvp_list
#  define VALUE_T cson_kvp *
#  define VALUE_T_IS_PTR 1
#else
#endif

/**
   Allocates a new value of the specified type. Ownership is
   transfered to the caller, who must eventually free it by passing it
   to cson_value_free() or transfering ownership to a container.

   extra is only valid for type CSON_TYPE_STRING, and must be the length
   of the string to allocate + 1 byte (for the NUL).

   The returned value->api member will be set appropriately and
   val->value will be set to point to the memory allocated to hold the
   native value type. Use the internal CSON_CAST() family of macros to
   convert the cson_values to their corresponding native
   representation.

   Returns NULL on allocation error.

   @see cson_value_new_array()
   @see cson_value_new_object()
   @see cson_value_new_string()
   @see cson_value_new_integer()
   @see cson_value_new_double()
   @see cson_value_new_bool()
   @see cson_value_free()
*/
static cson_value * cson_value_new(cson_type_id t, size_t extra)
{
    static const size_t vsz = sizeof(cson_value);
    const size_t sz = vsz + extra;
    size_t tx = 0;
    cson_value def = cson_value_undef;
    cson_value * v = NULL;
    char const * reason = "cson_value_new";
    switch(t)
    {
      case CSON_TYPE_ARRAY:
          assert( 0 == extra );
          def = cson_value_array_empty;
          tx = sizeof(cson_array);
          reason = "cson_value:array";
          break;
      case CSON_TYPE_DOUBLE:
          assert( 0 == extra );
          def = cson_value_double_empty;
          tx = sizeof(cson_double_t);
          reason = "cson_value:double";
          break;
      case CSON_TYPE_INTEGER:
          assert( 0 == extra );
          def = cson_value_integer_empty;
#if !CSON_VOID_PTR_IS_BIG
          tx = sizeof(cson_int_t);
#endif
          reason = "cson_value:int";
          break;
      case CSON_TYPE_STRING:
          assert( 0 != extra );
          def = cson_value_string_empty;
          tx = sizeof(cson_string);
          reason = "cson_value:string";
          break;
      case CSON_TYPE_OBJECT:
          assert( 0 == extra );
          def = cson_value_object_empty;
          tx = sizeof(cson_object);
          reason = "cson_value:object";
          break;
      default:
          assert(0 && "Unhandled type in cson_value_new()!");
          return NULL;
    }
    assert( def.api->typeID != CSON_TYPE_UNDEF );
    v = (cson_value *)cson_malloc(sz+tx, reason);
    if( v ) {
        *v = def;
        if(tx || extra){
            memset(v+1, 0, tx + extra);
            v->value = (void *)(v+1);
        }
    }
    return v;
}

void cson_value_free(cson_value *v)
{
    cson_refcount_decr( v );
}

#if 0 /* we might actually want this later on. */
/** Returns true if v is not NULL and has the given type ID. */
static char cson_value_is_a( cson_value const * v, cson_type_id is )
{
    return (v && v->api && (v->api->typeID == is)) ? 1 : 0;
}
#endif

cson_type_id cson_value_type_id( cson_value const * v )
{
    return (v && v->api) ? v->api->typeID : CSON_TYPE_UNDEF;
}

char cson_value_is_undef( cson_value const * v )
{
    return ( !v || !v->api || (v->api==&cson_value_api_undef))
        ? 1 : 0;
}
#define ISA(T,TID) char cson_value_is_##T( cson_value const * v ) {       \
        /*return (v && v->api) ? cson_value_is_a(v,CSON_TYPE_##TID) : 0;*/ \
        return (v && (v->api == &cson_value_api_##T)) ? 1 : 0; \
    } extern char bogusPlaceHolderForEmacsIndention##TID
ISA(null,NULL);
ISA(bool,BOOL);
ISA(integer,INTEGER);
ISA(double,DOUBLE);
ISA(string,STRING);
ISA(array,ARRAY);
ISA(object,OBJECT);
#undef ISA
char cson_value_is_number( cson_value const * v )
{
    return cson_value_is_integer(v) || cson_value_is_double(v);
}


void cson_value_clean( cson_value * val )
{
    if( val && val->api && val->api->cleanup )
    {
        if( ! cson_value_is_builtin( val ) )
        {
            cson_counter_t const rc = val->refcount;
            val->api->cleanup(val);
            *val = cson_value_undef;
            val->refcount = rc;
        }
    }
}

static cson_value * cson_value_array_alloc(void)
{
    cson_value * v = cson_value_new(CSON_TYPE_ARRAY,0);
    if( NULL != v )
    {
        cson_array * ar = CSON_ARRAY(v);
        assert(NULL != ar);
        *ar = cson_array_empty;
    }
    return v;
}

static cson_value * cson_value_object_alloc(void)
{
    cson_value * v = cson_value_new(CSON_TYPE_OBJECT,0);
    if( NULL != v )
    {
        cson_object * obj = CSON_OBJ(v);
        assert(NULL != obj);
        *obj = cson_object_empty;
    }
    return v;
}

cson_value * cson_value_new_object(void)
{
    return cson_value_object_alloc();
}

cson_object * cson_new_object(void)
{
    
    return cson_value_get_object( cson_value_new_object() );
}

cson_value * cson_value_new_array(void)
{
    return cson_value_array_alloc();
}


cson_array * cson_new_array(void)
{
    return cson_value_get_array( cson_value_new_array() );
}

/**
   Frees kvp->key and kvp->value and sets them to NULL, but does not free
   kvp. If !kvp then this is a no-op.
*/
static void cson_kvp_clean( cson_kvp * kvp )
{
    if( kvp )
    {
        if(kvp->key)
        {
            cson_value_free(kvp->key);
            kvp->key = NULL;
        }
        if(kvp->value)
        {
            cson_value_free( kvp->value );
            kvp->value = NULL;
        }
    }
}

cson_string * cson_kvp_key( cson_kvp const * kvp )
{
    return kvp ? cson_value_get_string(kvp->key) : NULL;
}
cson_value * cson_kvp_value( cson_kvp const * kvp )
{
    return kvp ? kvp->value : NULL;
}


/**
   Calls cson_kvp_clean(kvp) and then frees kvp.
*/
static void cson_kvp_free( cson_kvp * kvp )
{
    if( kvp )
    {
        cson_kvp_clean(kvp);
        cson_free(kvp,"cson_kvp");
    }
}


/**
   cson_value_api::destroy_value() impl for Object
   values. Cleans up self-owned memory and overwrites
   self to have the undefined value, but does not
   free self.
*/
static void cson_value_destroy_object( cson_value * self )
{
    if(self && self->value) {
        cson_object * obj = (cson_object *)self->value;
        assert( self->value == obj );
        cson_kvp_list_clean( &obj->kvp, cson_kvp_free );
        *self = cson_value_undef;
    }
}

/**
   Cleans up the contents of ar->list, but does not free ar.

   After calling this, ar will have a length of 0.

   If properlyCleanValues is 1 then cson_value_free() is called on
   each non-NULL item, otherwise the outer list is destroyed but the
   individual items are assumed to be owned by someone else and are
   not freed.
*/
static void cson_array_clean( cson_array * ar, char properlyCleanValues )
{
    if( ar )
    {
        unsigned int i = 0;
        cson_value * val = NULL;
        for( ; i < ar->list.count; ++i )
        {
            val = ar->list.list[i];
            if(val)
            {
                ar->list.list[i] = NULL;
                if( properlyCleanValues )
                {
                    cson_value_free( val );
                }
            }
        }
        cson_value_list_reserve(&ar->list,0);
        ar->list = cson_value_list_empty
            /* Pedantic note: reserve(0) already clears the list-specific
               fields, but we do this just in case we ever add new fields
               to cson_value_list which are not used in the reserve() impl.
             */
            ;
    }
}

/**
   cson_value_api::destroy_value() impl for Array
   values. Cleans up self-owned memory and overwrites
   self to have the undefined value, but does not
   free self.
*/
static void cson_value_destroy_array( cson_value * self )
{
    cson_array * ar = cson_value_get_array(self);
    if(ar) {
        assert( self->value == ar );
        cson_array_clean( ar, 1 );
        *self = cson_value_undef;
    }
}

int cson_buffer_fill_from( cson_buffer * dest, cson_data_source_f src, void * state )
{
    int rc;
    enum { BufSize = 1024 * 4 };
    char rbuf[BufSize];
    size_t total = 0;
    unsigned int rlen = 0;
    if( ! dest || ! src ) return CSON_RC_ArgError;
    dest->used = 0;
    while(1)
    {
        rlen = BufSize;
        rc = src( state, rbuf, &rlen );
        if( rc ) break;
        total += rlen;
        if( dest->capacity < (total+1) )
        {
            rc = cson_buffer_reserve( dest, total + 1);
            if( 0 != rc ) break;
        }
        memcpy( dest->mem + dest->used, rbuf, rlen );
        dest->used += rlen;
        if( rlen < BufSize ) break;
    }
    if( !rc && dest->used )
    {
        assert( dest->used < dest->capacity );
        dest->mem[dest->used] = 0;
    }
    return rc;
}

int cson_data_source_FILE( void * state, void * dest, unsigned int * n )
{
    FILE * f = (FILE*) state;
    if( ! state || ! n || !dest ) return CSON_RC_ArgError;
    else if( !*n ) return CSON_RC_RangeError;
    *n = (unsigned int)fread( dest, 1, *n, f );
    if( !*n )
    {
        return feof(f) ? 0 : CSON_RC_IOError;
    }
    return 0;
}

int cson_parse_FILE( cson_value ** tgt, FILE * src,
                     cson_parse_opt const * opt, cson_parse_info * err )
{
    return cson_parse( tgt, cson_data_source_FILE, src, opt, err );
}


int cson_value_fetch_bool( cson_value const * val, char * v )
{
    /**
       FIXME: move the to-bool operation into cson_value_api, like we
       do in the C++ API.
     */
    if( ! val || !val->api ) return CSON_RC_ArgError;
    else
    {
        int rc = 0;
        char b = 0;
        switch( val->api->typeID )
        {
          case CSON_TYPE_ARRAY:
          case CSON_TYPE_OBJECT:
              b = 1;
              break;
          case CSON_TYPE_STRING: {
              char const * str = cson_string_cstr(cson_value_get_string(val));
              b = (str && *str) ? 1 : 0;
              break;
          }
          case CSON_TYPE_UNDEF:
          case CSON_TYPE_NULL:
              break;
          case CSON_TYPE_BOOL:
              b = (NULL==val->value) ? 0 : 1;
              break;
          case CSON_TYPE_INTEGER: {
              cson_int_t i = 0;
              cson_value_fetch_integer( val, &i );
              b = i ? 1 : 0;
              break;
          }
          case CSON_TYPE_DOUBLE: {
              cson_double_t d = 0.0;
              cson_value_fetch_double( val, &d );
              b = (0.0==d) ? 0 : 1;
              break;
          }
          default:
              rc = CSON_RC_TypeError;
              break;
        }
        if( v ) *v = b;
        return rc;
    }
}

char cson_value_get_bool( cson_value const * val )
{
    char i = 0;
    cson_value_fetch_bool( val, &i );
    return i;
}

int cson_value_fetch_integer( cson_value const * val, cson_int_t * v )
{
    if( ! val || !val->api ) return CSON_RC_ArgError;
    else
    {
        cson_int_t i = 0;
        int rc = 0;
        switch(val->api->typeID)
        {
            case CSON_TYPE_UNDEF: 
            case CSON_TYPE_NULL:
              i = 0;
              break;
            case CSON_TYPE_BOOL: {
              char b = 0;
              cson_value_fetch_bool( val, &b );
              i = b;
              break;
            }
            case CSON_TYPE_INTEGER: {
                cson_int_t const * x = CSON_INT(val);
                if(!x)
                {
                    assert( val == &CSON_SPECIAL_VALUES[CSON_VAL_INT_0] );
                }
                i = x ? *x : 0;
                break;
            }
            case CSON_TYPE_DOUBLE: {
              cson_double_t d = 0.0;
              cson_value_fetch_double( val, &d );
              i = (cson_int_t)d;
              break;
            }
            case CSON_TYPE_STRING:
            case CSON_TYPE_ARRAY:
            case CSON_TYPE_OBJECT:
            default:
                rc = CSON_RC_TypeError;
                break;
        }
        if(!rc && v) *v = i;
        return rc;
    }
}

cson_int_t cson_value_get_integer( cson_value const * val )
{
    cson_int_t i = 0;
    cson_value_fetch_integer( val, &i );
    return i;
}

int cson_value_fetch_double( cson_value const * val, cson_double_t * v )
{
    if( ! val || !val->api ) return CSON_RC_ArgError;
    else
    {
        cson_double_t d = 0.0;
        int rc = 0;
        switch(val->api->typeID)
        {
          case CSON_TYPE_UNDEF: 
          case CSON_TYPE_NULL:
              d = 0;
              break;
          case CSON_TYPE_BOOL: {
              char b = 0;
              cson_value_fetch_bool( val, &b );
              d = b ? 1.0 : 0.0;
              break;
          }
          case CSON_TYPE_INTEGER: {
              cson_int_t i = 0;
              cson_value_fetch_integer( val, &i );
              d = i;
              break;
          }
          case CSON_TYPE_DOUBLE: {
              cson_double_t const* dv = CSON_DBL(val);
              d = dv ? *dv : 0.0;
              break;
          }
          default:
              rc = CSON_RC_TypeError;
              break;
        }
        if(v) *v = d;
        return rc;
    }
}

cson_double_t cson_value_get_double( cson_value const * val )
{
    cson_double_t i = 0.0;
    cson_value_fetch_double( val, &i );
    return i;
}

int cson_value_fetch_string( cson_value const * val, cson_string ** dest )
{
    if( ! val || ! dest ) return CSON_RC_ArgError;
    else if( ! cson_value_is_string(val) ) return CSON_RC_TypeError;
    else
    {
        if( dest ) *dest = CSON_STR(val);
        return 0;
    }
}

cson_string * cson_value_get_string( cson_value const * val )
{
    cson_string * rc = NULL;
    cson_value_fetch_string( val, &rc );
    return rc;
}

char const * cson_value_get_cstr( cson_value const * val )
{
    return cson_string_cstr( cson_value_get_string(val) );
}

int cson_value_fetch_object( cson_value const * val, cson_object ** obj )
{
    if( ! val ) return CSON_RC_ArgError;
    else if( ! cson_value_is_object(val) ) return CSON_RC_TypeError;
    else
    {
        if(obj) *obj = CSON_OBJ(val);
        return 0;
    }
}
cson_object * cson_value_get_object( cson_value const * v )
{
    cson_object * obj = NULL;
    cson_value_fetch_object( v, &obj );
    return obj;
}

int cson_value_fetch_array( cson_value const * val, cson_array ** ar)
{
    if( ! val ) return CSON_RC_ArgError;
    else if( !cson_value_is_array(val) ) return CSON_RC_TypeError;
    else
    {
        if(ar) *ar = CSON_ARRAY(val);
        return 0;
    }
}

cson_array * cson_value_get_array( cson_value const * v )
{
    cson_array * ar = NULL;
    cson_value_fetch_array( v, &ar );
    return ar;
}

cson_kvp * cson_kvp_alloc(void)
{
    cson_kvp * kvp = (cson_kvp*)cson_malloc(sizeof(cson_kvp),"cson_kvp");
    if( kvp )
    {
        *kvp = cson_kvp_empty;
    }
    return kvp;
}



int cson_array_append( cson_array * ar, cson_value * v )
{
    if( !ar || !v ) return CSON_RC_ArgError;
    else if( (ar->list.count+1) < ar->list.count ) return CSON_RC_RangeError;
    else
    {
        if( !ar->list.alloced || (ar->list.count == ar->list.alloced-1))
        {
            unsigned int const n = ar->list.count ? (ar->list.count*2) : 7;
            if( n > cson_value_list_reserve( &ar->list, n ) )
            {
                return CSON_RC_AllocError;
            }
        }
        return cson_array_set( ar, ar->list.count, v );
    }
}

#if 0
/**
   Removes and returns the last value from the given array,
   shrinking its size by 1. Returns NULL if ar is NULL,
   ar->list.count is 0, or the element at that index is NULL.
   

   If removeRef is true then cson_value_free() is called to remove
   ar's reference count for the value. In that case NULL is returned,
   even if the object still has live references. If removeRef is false
   then the caller takes over ownership of that reference count point.

   If removeRef is false then the caller takes over ownership
   of the return value, otherwise ownership is effectively
   determined by any remaining references for the returned
   value.
*/
static cson_value * cson_array_pop_back( cson_array * ar,
                                         char removeRef )
{
    if( !ar ) return NULL;
    else if( ! ar->list.count ) return NULL;
    else
    {
        unsigned int const ndx = --ar->list.count;
        cson_value * v = ar->list.list[ndx];
        ar->list.list[ndx] = NULL;
        if( removeRef )
        {
            cson_value_free( v );
            v = NULL;
        }
        return v;
    }
}
#endif

cson_value * cson_value_new_bool( char v )
{
    return v ? &CSON_SPECIAL_VALUES[CSON_VAL_TRUE] : &CSON_SPECIAL_VALUES[CSON_VAL_FALSE];
}

cson_value * cson_value_true(void)
{
    return &CSON_SPECIAL_VALUES[CSON_VAL_TRUE];
}
cson_value * cson_value_false(void)
{
    return &CSON_SPECIAL_VALUES[CSON_VAL_FALSE];
}

cson_value * cson_value_null(void)
{
    return &CSON_SPECIAL_VALUES[CSON_VAL_NULL];
}

cson_value * cson_new_int( cson_int_t v )
{
    return cson_value_new_integer(v);
}

cson_value * cson_value_new_integer( cson_int_t v )
{
    if( 0 == v ) return &CSON_SPECIAL_VALUES[CSON_VAL_INT_0];
    else
    {
        cson_value * c = cson_value_new(CSON_TYPE_INTEGER,0);
#if !defined(NDEBUG) && CSON_VOID_PTR_IS_BIG
        assert( sizeof(cson_int_t) <= sizeof(void *) );
#endif
        if( c )
        {
            memcpy( CSON_INT(c), &v, sizeof(v) );
        }
        return c;
    }
}

cson_value * cson_new_double( cson_double_t v )
{
    return cson_value_new_double(v);
}

cson_value * cson_value_new_double( cson_double_t v )
{
    if( 0.0 == v ) return &CSON_SPECIAL_VALUES[CSON_VAL_DBL_0];
    else
    {
        cson_value * c = cson_value_new(CSON_TYPE_DOUBLE,0);
        if( c )
        {
            memcpy( CSON_DBL(c), &v, sizeof(v) );
        }
        return c;
    }
}

cson_string * cson_new_string(char const * str, unsigned int len)
{
    if( !str || !*str || !len ) return &CSON_EMPTY_HOLDER.stringValue;
    else
    {
        cson_value * c = cson_value_new(CSON_TYPE_STRING, len + 1/*NUL byte*/);
        cson_string * s = NULL;
        if( c )
        {
            char * dest = NULL;
            s = CSON_STR(c);
            *s = cson_string_empty;
            assert( NULL != s );
            s->length = len;
            dest = cson_string_str(s);
            assert( NULL != dest );
            memcpy( dest, str, len );
            dest[len] = 0;
        }
        return s;
    }
}

cson_value * cson_value_new_string( char const * str, unsigned int len )
{
    return cson_string_value( cson_new_string(str, len) );
}

int cson_array_value_fetch( cson_array const * ar, unsigned int pos, cson_value ** v )
{
    if( !ar) return CSON_RC_ArgError;
    if( pos >= ar->list.count ) return CSON_RC_RangeError;
    else
    {
        if(v) *v = ar->list.list[pos];
        return 0;
    }
}

cson_value * cson_array_get( cson_array const * ar, unsigned int pos )
{
    cson_value *v = NULL;
    cson_array_value_fetch(ar, pos, &v);
    return v;
}

int cson_array_length_fetch( cson_array const * ar, unsigned int * v )
{
    if( ! ar || !v ) return CSON_RC_ArgError;
    else
    {
        if(v) *v = ar->list.count;
        return 0;
    }
}

unsigned int cson_array_length_get( cson_array const * ar )
{
    unsigned int i = 0;
    cson_array_length_fetch(ar, &i);
    return i;
}

int cson_array_reserve( cson_array * ar, unsigned int size )
{
    if( ! ar ) return CSON_RC_ArgError;
    else if( size <= ar->list.alloced )
    {
        /* We don't want to introduce a can of worms by trying to
           handle the cleanup from here.
        */
        return 0;
    }
    else
    {
        return (ar->list.alloced > cson_value_list_reserve( &ar->list, size ))
            ? CSON_RC_AllocError
            : 0
            ;
    }
}

int cson_array_set( cson_array * ar, unsigned int ndx, cson_value * v )
{
    if( !ar || !v ) return CSON_RC_ArgError;
    else if( (ndx+1) < ndx) /* overflow */return CSON_RC_RangeError;
    else
    {
        unsigned const int len = cson_value_list_reserve( &ar->list, ndx+1 );
        if( len <= ndx ) return CSON_RC_AllocError;
        else
        {
            cson_value * old = ar->list.list[ndx];
            if( old )
            {
                if(old == v) return 0;
                else cson_value_free(old);
            }
            cson_refcount_incr( v );
            ar->list.list[ndx] = v;
            if( ndx >= ar->list.count )
            {
                ar->list.count = ndx+1;
            }
            return 0;
        }
    }
}

/** @internal

   Searchs for the given key in the given object.

   Returns the found item on success, NULL on error.  If ndx is not
   NULL, it is set to the index (in obj->kvp.list) of the found
   item. *ndx is not modified if no entry is found.
*/
static cson_kvp * cson_object_search_impl( cson_object const * obj, char const * key, unsigned int * ndx )
{
    if( obj && key && *key && obj->kvp.count)
    {
#if CSON_OBJECT_PROPS_SORT
        cson_kvp ** s = (cson_kvp**)
            bsearch( key, obj->kvp.list,
                     obj->kvp.count, sizeof(cson_kvp*),
                     cson_kvp_cmp_vs_cstr );
        if( ndx && s )
        { /* index of found record is required by
             cson_object_unset(). Calculate the offset based on s...*/
#if 0
            *ndx = (((unsigned char const *)s - ((unsigned char const *)obj->kvp.list))
                   / sizeof(cson_kvp*));
#else
            *ndx = s - obj->kvp.list;
#endif
        }
        return s ? *s : NULL;
#else
        cson_kvp_list const * li = &obj->kvp;
        unsigned int i = 0;
        cson_kvp * kvp;
        const unsigned int klen = strlen(key);
        for( ; i < li->count; ++i )
        {
            cson_string const * sKey;
            kvp = li->list[i];
            assert( kvp && kvp->key );
            sKey = cson_value_get_string(kvp->key);
            assert(sKey);
            if( sKey->length != klen ) continue;
            else if(0==strcmp(key,cson_string_cstr(sKey)))
            {
                if(ndx) *ndx = i;
                return kvp;
            }
        }
#endif
    }
    return NULL;
}

cson_value * cson_object_get( cson_object const * obj, char const * key )
{
    cson_kvp * kvp = cson_object_search_impl( obj, key, NULL );
    return kvp ? kvp->value : NULL;
}

cson_value * cson_object_get_s( cson_object const * obj, cson_string const *key )
{
    cson_kvp * kvp = cson_object_search_impl( obj, cson_string_cstr(key), NULL );
    return kvp ? kvp->value : NULL;
}


#if CSON_OBJECT_PROPS_SORT
static void cson_object_sort_props( cson_object * obj )
{
    assert( NULL != obj );
    if( obj->kvp.count )
    {
        qsort( obj->kvp.list, obj->kvp.count, sizeof(cson_kvp*),
               cson_kvp_cmp );
    }

}
#endif    

int cson_object_unset( cson_object * obj, char const * key )
{
    if( ! obj || !key || !*key ) return CSON_RC_ArgError;
    else
    {
        unsigned int ndx = 0;
        cson_kvp * kvp = cson_object_search_impl( obj, key, &ndx );
        if( ! kvp )
        {
            return CSON_RC_NotFoundError;
        }
        assert( obj->kvp.count > 0 );
        assert( obj->kvp.list[ndx] == kvp );
        cson_kvp_free( kvp );
        obj->kvp.list[ndx] = NULL;
        { /* if my brain were bigger i'd use memmove(). */
            unsigned int i = ndx;
            for( ; i < obj->kvp.count; ++i )
            {
                obj->kvp.list[i] =
                    (i < (obj->kvp.alloced-1))
                    ? obj->kvp.list[i+1]
                    : NULL;
            }
        }
        obj->kvp.list[--obj->kvp.count] = NULL;
#if CSON_OBJECT_PROPS_SORT
        cson_object_sort_props( obj );
#endif
        return 0;
    }
}

int cson_object_set_s( cson_object * obj, cson_string * key, cson_value * v )
{
    if( !obj || !key ) return CSON_RC_ArgError;
    else if( NULL == v ) return cson_object_unset( obj, cson_string_cstr(key) );
    else
    {
        char const * cKey;
        cson_value * vKey;
        cson_kvp * kvp;
        vKey = cson_string_value(key);
        assert(vKey && (key==CSON_STR(vKey)));
        if( vKey == CSON_VCAST(obj) ){
            return CSON_RC_ArgError;
        }
        cKey =  cson_string_cstr(key);
        kvp = cson_object_search_impl( obj, cKey, NULL );
        if( kvp )
        { /* "I told 'em we've already got one!" */
            if( kvp->key != vKey ){
                cson_value_free( kvp->key );
                cson_refcount_incr(vKey);
                kvp->key = vKey;
            }
            if(kvp->value != v){
                cson_value_free( kvp->value );
                cson_refcount_incr( v );
                kvp->value = v;
            }
            return 0;
        }
        if( !obj->kvp.alloced || (obj->kvp.count == obj->kvp.alloced-1))
        { /* reserve space */
            unsigned int const n = obj->kvp.count ? (obj->kvp.count*2) : 6;
            if( n > cson_kvp_list_reserve( &obj->kvp, n ) )
            {
                return CSON_RC_AllocError;
            }
        }
        { /* insert new item... */
            int rc = 0;
            kvp = cson_kvp_alloc();
            if( ! kvp )
            {
                return CSON_RC_AllocError;
            }
            rc = cson_kvp_list_append( &obj->kvp, kvp );
            if( 0 != rc )
            {
                cson_kvp_free(kvp);
            }
            else
            {
                cson_refcount_incr(vKey);
                cson_refcount_incr(v);
                kvp->key = vKey;
                kvp->value = v;
#if CSON_OBJECT_PROPS_SORT
                cson_object_sort_props( obj );
#endif
            }
            return rc;
        }
    }

}
int cson_object_set( cson_object * obj, char const * key, cson_value * v )
{
    if( ! obj || !key || !*key ) return CSON_RC_ArgError;
    else if( NULL == v )
    {
        return cson_object_unset( obj, key );
    }
    else
    {
        cson_string * cs = cson_new_string(key,strlen(key));
        if(!cs) return CSON_RC_AllocError;
        else
        {
            int const rc = cson_object_set_s(obj, cs, v);
            if(rc) cson_value_free(cson_string_value(cs));
            return rc;
        }
    }
}

cson_value * cson_object_take( cson_object * obj, char const * key )
{
    if( ! obj || !key || !*key ) return NULL;
    else
    {
        /* FIXME: this is 90% identical to cson_object_unset(),
           only with different refcount handling.
           Consolidate them.
        */
        unsigned int ndx = 0;
        cson_kvp * kvp = cson_object_search_impl( obj, key, &ndx );
        cson_value * rc = NULL;
        if( ! kvp )
        {
            return NULL;
        }
        assert( obj->kvp.count > 0 );
        assert( obj->kvp.list[ndx] == kvp );
        rc = kvp->value;
        assert( rc );
        kvp->value = NULL;
        cson_kvp_free( kvp );
        assert( rc->refcount > 0 );
        --rc->refcount;
        obj->kvp.list[ndx] = NULL;
        { /* if my brain were bigger i'd use memmove(). */
            unsigned int i = ndx;
            for( ; i < obj->kvp.count; ++i )
            {
                obj->kvp.list[i] =
                    (i < (obj->kvp.alloced-1))
                    ? obj->kvp.list[i+1]
                    : NULL;
            }
        }
        obj->kvp.list[--obj->kvp.count] = NULL;
#if CSON_OBJECT_PROPS_SORT
        cson_object_sort_props( obj );
#endif
        return rc;
    }
}
/** @internal

   If p->node is-a Object then value is inserted into the object
   using p->key. In any other case CSON_RC_InternalError is returned.

   Returns CSON_RC_AllocError if an allocation fails.

   Returns 0 on success. On error, parsing must be ceased immediately.
   
   Ownership of val is ALWAYS TRANSFERED to this function. If this
   function fails, val will be cleaned up and destroyed. (This
   simplifies error handling in the core parser.)
*/
static int cson_parser_set_key( cson_parser * p, cson_value * val )
{
    assert( p && val );

    if( p->ckey && cson_value_is_object(p->node) )
    {
        int rc;
        cson_object * obj = cson_value_get_object(p->node);
        cson_kvp * kvp = NULL;
        assert( obj && (p->node->value == obj) );
        /**
           FIXME? Use cson_object_set() instead of our custom
           finagling with the object? We do it this way to avoid an
           extra alloc/strcpy of the key data.
        */
        if( !obj->kvp.alloced || (obj->kvp.count == obj->kvp.alloced-1))
        {
            if( obj->kvp.alloced > cson_kvp_list_reserve( &obj->kvp, obj->kvp.count ? (obj->kvp.count*2) : 5 ) )
            {
                cson_value_free(val);
                return CSON_RC_AllocError;
            }
        }
        kvp = cson_kvp_alloc();
        if( ! kvp )
        {
            cson_value_free(val);
            return CSON_RC_AllocError;
        }
        kvp->key = cson_string_value(p->ckey)/*transfer ownership*/;
        assert(0 == kvp->key->refcount);
        cson_refcount_incr(kvp->key);
        p->ckey = NULL;
        kvp->value = val;
        cson_refcount_incr( val );
        rc = cson_kvp_list_append( &obj->kvp, kvp );
        if( 0 != rc )
        {
            cson_kvp_free( kvp );
        }
        else
        {
            ++p->totalValueCount;
        }
        return rc;
    }
    else
    {
        if(val) cson_value_free(val);
        return p->errNo = CSON_RC_InternalError;
    }

}

/** @internal

    Pushes val into the current object/array parent node, depending on the
    internal state of the parser.

    Ownership of val is always transfered to this function, regardless of
    success or failure.

    Returns 0 on success. On error, parsing must be ceased immediately.
*/
static int cson_parser_push_value( cson_parser * p, cson_value * val )
{
    if( p->ckey )
    { /* we're in Object mode */
        assert( cson_value_is_object( p->node ) );
        return cson_parser_set_key( p, val );
    }
    else if( cson_value_is_array( p->node ) )
    { /* we're in Array mode */
        cson_array * ar = cson_value_get_array( p->node );
        int rc;
        assert( ar && (ar == p->node->value) );
        rc = cson_array_append( ar, val );
        if( 0 != rc )
        {
            cson_value_free(val);
        }
        else
        {
            ++p->totalValueCount;
        }
        return rc;
    }
    else
    { /* WTF? */
        assert( 0 && "Internal error in cson_parser code" );
        return p->errNo = CSON_RC_InternalError;
    }
}

/**
   Callback for JSON_parser API. Reminder: it returns 0 (meaning false)
   on error!
*/
static int cson_parse_callback( void * cx, int type, JSON_value const * value )
{
    cson_parser * p = (cson_parser *)cx;
    int rc = 0;
#define ALLOC_V(T,V) cson_value * v = cson_value_new_##T(V); if( ! v ) { rc = CSON_RC_AllocError; break; }
    switch(type) {
      case JSON_T_ARRAY_BEGIN:
      case JSON_T_OBJECT_BEGIN: {
          cson_value * obja = (JSON_T_ARRAY_BEGIN == type)
              ? cson_value_new_array()
              : cson_value_new_object();
          if( ! obja )
          {
              p->errNo = CSON_RC_AllocError;
              break;
          }
          if( 0 != rc ) break;
          if( ! p->root )
          {
              p->root = p->node = obja;
              rc = cson_array_append( &p->stack, obja );
              if( 0 != rc )
              { /* work around a (potential) corner case in the cleanup code. */
                  cson_value_free( p->root );
                  p->root = NULL;
              }
              else
              {
                  cson_refcount_incr( p->root )
                      /* simplifies cleanup later on. */
                      ;
                  ++p->totalValueCount;
              }
          }
          else
          {
              rc = cson_array_append( &p->stack, obja );
              if(rc) cson_value_free( obja );
              else
              {
                  rc = cson_parser_push_value( p, obja );
                  if( 0 == rc ) p->node = obja;
              }
          }
          break;
      }
      case JSON_T_ARRAY_END:
      case JSON_T_OBJECT_END: {
          if( 0 == p->stack.list.count )
          {
              rc = CSON_RC_RangeError;
              break;
          }
#if CSON_OBJECT_PROPS_SORT
          if( cson_value_is_object(p->node) )
          {/* kludge: the parser uses custom cson_object property
              insertion as a malloc/strcpy-reduction optimization.
              Because of that, we have to sort the property list
              ourselves...
           */
              cson_object * obj = cson_value_get_object(p->node);
              assert( NULL != obj );
              cson_object_sort_props( obj );
          }
#endif

#if 1
          /* Reminder: do not use cson_array_pop_back( &p->stack )
             because that will clean up the object, and we don't want
             that.  We just want to forget this reference
             to it. The object is either the root or was pushed into
             an object/array in the parse tree (and is owned by that
             object/array).
          */
          --p->stack.list.count;
          assert( p->node == p->stack.list.list[p->stack.list.count] );
          cson_refcount_decr( p->node )
              /* p->node might be owned by an outer object but we
                 need to remove the list's reference. For the
                 root node we manually add a reference to
                 avoid a special case here. Thus when we close
                 the root node, its refcount is still 1.
              */;
          p->stack.list.list[p->stack.list.count] = NULL;
          if( p->stack.list.count )
          {
              p->node = p->stack.list.list[p->stack.list.count-1];
          }
          else
          {
              p->node = p->root;
          }
#else
          /*
             Causing a leak?
           */
          cson_array_pop_back( &p->stack, 1 );
          if( p->stack.list.count )
          {
              p->node = p->stack.list.list[p->stack.list.count-1];
          }
          else
          {
              p->node = p->root;
          }
          assert( p->node && (1==p->node->refcount) );
#endif
          break;
      }
      case JSON_T_INTEGER: {
          ALLOC_V(integer, value->vu.integer_value );
          rc = cson_parser_push_value( p, v );
          break;
      }
      case JSON_T_FLOAT: {
          ALLOC_V(double, value->vu.float_value );
          rc =  cson_parser_push_value( p, v );
          break;
      }
      case JSON_T_NULL: {
          rc = cson_parser_push_value( p, cson_value_null() );
          break;
      }
      case JSON_T_TRUE: {
          rc = cson_parser_push_value( p, cson_value_true() );
          break;
      }
      case JSON_T_FALSE: {
          rc = cson_parser_push_value( p, cson_value_false() );
          break;
      }
      case JSON_T_KEY: {
          assert(!p->ckey);
          p->ckey = cson_new_string( value->vu.str.value, value->vu.str.length );
          if( ! p->ckey )
          {
              rc = CSON_RC_AllocError;
              break;
          }
          ++p->totalKeyCount;
          break;
      }
      case JSON_T_STRING: {
          cson_value * v = cson_value_new_string( value->vu.str.value, value->vu.str.length );
          rc = ( NULL == v ) 
            ? CSON_RC_AllocError
            : cson_parser_push_value( p, v );
          break;
      }
      default:
          assert(0);
          rc = CSON_RC_InternalError;
          break;
    }
#undef ALLOC_V
    return ((p->errNo = rc)) ? 0 : 1;
}


/**
   Converts a JSON_error code to one of the cson_rc values.
*/
static int cson_json_err_to_rc( JSON_error jrc )
{
    switch(jrc)
    {
      case JSON_E_NONE: return 0;
      case JSON_E_INVALID_CHAR: return CSON_RC_Parse_INVALID_CHAR;
      case JSON_E_INVALID_KEYWORD: return CSON_RC_Parse_INVALID_KEYWORD;
      case JSON_E_INVALID_ESCAPE_SEQUENCE: return CSON_RC_Parse_INVALID_ESCAPE_SEQUENCE;
      case JSON_E_INVALID_UNICODE_SEQUENCE: return CSON_RC_Parse_INVALID_UNICODE_SEQUENCE;
      case JSON_E_INVALID_NUMBER: return CSON_RC_Parse_INVALID_NUMBER;
      case JSON_E_NESTING_DEPTH_REACHED: return CSON_RC_Parse_NESTING_DEPTH_REACHED;
      case JSON_E_UNBALANCED_COLLECTION: return CSON_RC_Parse_UNBALANCED_COLLECTION;
      case JSON_E_EXPECTED_KEY: return CSON_RC_Parse_EXPECTED_KEY;
      case JSON_E_EXPECTED_COLON: return CSON_RC_Parse_EXPECTED_COLON;
      case JSON_E_OUT_OF_MEMORY: return CSON_RC_AllocError;
      default:
          return CSON_RC_InternalError;
    }
}

/** @internal

   Cleans up all contents of p but does not free p.

   To properly take over ownership of the parser's root node on a
   successful parse:

   - Copy p->root's pointer and set p->root to NULL.
   - Eventually free up p->root with cson_value_free().
   
   If you do not set p->root to NULL, p->root will be freed along with
   any other items inserted into it (or under it) during the parsing
   process.
*/
static int cson_parser_clean( cson_parser * p )
{
    if( ! p ) return CSON_RC_ArgError;
    else
    {
        if( p->p )
        {
            delete_JSON_parser(p->p);
            p->p = NULL;
        }
        if( p->ckey ){
            cson_value_free(cson_string_value(p->ckey));
        }
        cson_array_clean( &p->stack, 1 );
        if( p->root )
        {
            cson_value_free( p->root );
        }
        *p = cson_parser_empty;
        return 0;
    }
}


int cson_parse( cson_value ** tgt, cson_data_source_f src, void * state,
                cson_parse_opt const * opt_, cson_parse_info * info_ )
{
    unsigned char ch[2] = {0,0};
    cson_parse_opt const opt = opt_ ? *opt_ : cson_parse_opt_empty;
    int rc = 0;
    unsigned int len = 1;
    cson_parse_info info = info_ ? *info_ : cson_parse_info_empty;
    cson_parser p = cson_parser_empty;
    if( ! tgt || ! src ) return CSON_RC_ArgError;
    
    {
        JSON_config jopt = {0};
        init_JSON_config( &jopt );
        jopt.allow_comments = opt.allowComments;
        jopt.depth = opt.maxDepth;
        jopt.callback_ctx = &p;
        jopt.handle_floats_manually = 0;
        jopt.callback = cson_parse_callback;
        p.p = new_JSON_parser(&jopt);
        if( ! p.p )
        {
            return CSON_RC_AllocError;
        }
    }

    do
    { /* FIXME: buffer the input in multi-kb chunks. */
        len = 1;
        ch[0] = 0;
        rc = src( state, ch, &len );
        if( 0 != rc ) break;
        else if( !len /* EOF */ ) break;
        ++info.length;
        if('\n' == ch[0])
        {
            ++info.line;
            info.col = 0;
        }
        if( ! JSON_parser_char(p.p, ch[0]) )
        {
            rc = cson_json_err_to_rc( JSON_parser_get_last_error(p.p) );
            if(0==rc) rc = p.errNo;
            if(0==rc) rc = CSON_RC_InternalError;
            info.errorCode = rc;
            break;
        }
        if( '\n' != ch[0]) ++info.col;
    } while(1);
    if( info_ )
    {
        info.totalKeyCount = p.totalKeyCount;
        info.totalValueCount = p.totalValueCount;
        *info_ = info;
    }
    if( 0 != rc )
    {
        cson_parser_clean(&p);
        return rc;
    }
    if( ! JSON_parser_done(p.p) )
    {
        rc = cson_json_err_to_rc( JSON_parser_get_last_error(p.p) );
        cson_parser_clean(&p);
        if(0==rc) rc = p.errNo;
        if(0==rc) rc = CSON_RC_InternalError;
    }
    else
    {
        cson_value * root = p.root;
        p.root = NULL;
        cson_parser_clean(&p);
        if( root )
        {
            assert( (1 == root->refcount) && "Detected memory mismanagement in the parser." );
            root->refcount = 0
                /* HUGE KLUDGE! Avoids having one too many references
                   in some client code, leading to a leak. Here we're
                   accommodating a memory management workaround in the
                   parser code which manually adds a reference to the
                   root node to keep it from being cleaned up
                   prematurely.
                */;
            *tgt = root;
        }
        else
        { /* then can happen on empty input. */
            rc = CSON_RC_UnknownError;
        }
    }
    return rc;
}

/**
   The UTF code was originally taken from sqlite3's public-domain
   source code (http://sqlite.org), modified only slightly for use
   here. This code generates some "possible data loss" warnings on
   MSVC, but if this code is good enough for sqlite3 then it's damned
   well good enough for me, so we disable that warning for Windows
   builds.
*/

/*
** This lookup table is used to help decode the first byte of
** a multi-byte UTF8 character.
*/
static const unsigned char cson_utfTrans1[] = {
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
  0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x00, 0x00
};


/*
** Translate a single UTF-8 character.  Return the unicode value.
**
** During translation, assume that the byte that zTerm points
** is a 0x00.
**
** Write a pointer to the next unread byte back into *pzNext.
**
** Notes On Invalid UTF-8:
**
**  *  This routine never allows a 7-bit character (0x00 through 0x7f) to
**     be encoded as a multi-byte character.  Any multi-byte character that
**     attempts to encode a value between 0x00 and 0x7f is rendered as 0xfffd.
**
**  *  This routine never allows a UTF16 surrogate value to be encoded.
**     If a multi-byte character attempts to encode a value between
**     0xd800 and 0xe000 then it is rendered as 0xfffd.
**
**  *  Bytes in the range of 0x80 through 0xbf which occur as the first
**     byte of a character are interpreted as single-byte characters
**     and rendered as themselves even though they are technically
**     invalid characters.
**
**  *  This routine accepts an infinite number of different UTF8 encodings
**     for unicode values 0x80 and greater.  It do not change over-length
**     encodings to 0xfffd as some systems recommend.
*/
#define READ_UTF8(zIn, zTerm, c)                           \
  c = *(zIn++);                                            \
  if( c>=0xc0 ){                                           \
    c = cson_utfTrans1[c-0xc0];                          \
    while( zIn!=zTerm && (*zIn & 0xc0)==0x80 ){            \
      c = (c<<6) + (0x3f & *(zIn++));                      \
    }                                                      \
    if( c<0x80                                             \
        || (c&0xFFFFF800)==0xD800                          \
        || (c&0xFFFFFFFE)==0xFFFE ){  c = 0xFFFD; }        \
  }
static int cson_utf8Read(
  const unsigned char *z,         /* First byte of UTF-8 character */
  const unsigned char *zTerm,     /* Pretend this byte is 0x00 */
  const unsigned char **pzNext    /* Write first byte past UTF-8 char here */
){
  int c;
  READ_UTF8(z, zTerm, c);
  *pzNext = z;
  return c;
}
#undef READ_UTF8

#ifdef _MSC_VER
#  if _MSC_VER >= 1400 /* Visual Studio 2005 and up */
#    pragma warning( pop )
#  endif
#endif

unsigned int cson_string_length_utf8( cson_string const * str )
{
    if( ! str ) return 0;
    else
    {
        char unsigned const * pos = (char unsigned const *)cson_string_cstr(str);
        char unsigned const * end = pos + str->length;
        unsigned int rc = 0;
        for( ; (pos < end) && cson_utf8Read(pos, end, &pos);
            ++rc )
        {
        };
        return rc;
    }
}

/**
   Escapes the first len bytes of the given string as JSON and sends
   it to the given output function (which will be called often - once
   for each logical character). The output is also surrounded by
   double-quotes.

   A NULL str will be escaped as an empty string, though we should
   arguably export it as "null" (without quotes). We do this because
   in JavaScript (typeof null === "object"), and by outputing null
   here we would effectively change the data type from string to
   object.
*/
static int cson_str_to_json( char const * str, unsigned int len,
                             char escapeFwdSlash,
                             cson_data_dest_f f, void * state )
{
    if( NULL == f ) return CSON_RC_ArgError;
    else if( !str || !*str || (0 == len) )
    { /* special case for 0-length strings. */
        return f( state, "\"\"", 2 );
    }
    else
    {
        unsigned char const * pos = (unsigned char const *)str;
        unsigned char const * end = (unsigned char const *)(str ? (str + len) : NULL);
        unsigned char const * next = NULL;
        int ch;
        unsigned char clen = 0;
        char escChar[3] = {'\\',0,0};
        enum { UBLen = 20 };
        char ubuf[UBLen];
        int rc = 0;
        rc = f(state, "\"", 1 );
        for( ; (pos < end) && (0 == rc); pos += clen )
        {
            ch = cson_utf8Read(pos, end, &next);
            if( 0 == ch ) break;
            assert( next > pos );
            clen = next - pos;
            assert( clen );
            if( 1 == clen )
            { /* ASCII */
#if defined(CSON_FOSSIL_MODE)
                /* Workaround for fossil repo artifact
                   f460839cff85d4e4f1360b366bb2858cef1411ea,
                   which has what appears to be latin1-encoded
                   text. file(1) thinks it's a FORTRAN program.
                */
                if(0xfffd==ch){
                    assert(*pos != ch);
                    /* MARKER("ch=%04x, *pos=%04x\n", ch, *pos); */
                    ch = *pos
                        /* We should arguably translate to '?', and
                           will if this problem ever comes up with a
                           non-latin1 encoding. For latin1 this
                           workaround incidentally corrects the output
                           to proper UTF8-escaped characters, and only
                           for that reason is it being kept around.
                        */;
                    goto assume_latin1;
                }
#endif
                assert( (*pos == ch) && "Invalid UTF8" );
                escChar[1] = 0;
                switch(ch)
                {
                  case '\t': escChar[1] = 't'; break;
                  case '\r': escChar[1] = 'r'; break;
                  case '\n': escChar[1] = 'n'; break;
                  case '\f': escChar[1] = 'f'; break;
                  case '\b': escChar[1] = 'b'; break;
                  case '/':
      /*
        Regarding escaping of forward-slashes. See the main exchange below...

        --------------
        From: Douglas Crockford <douglas@crockford.com>
        To: Stephan Beal <sgbeal@googlemail.com>
        Subject: Re: Is escaping of forward slashes required?

        It is allowed, not required. It is allowed so that JSON can be safely
        embedded in HTML, which can freak out when seeing strings containing
        "</". JSON tolerates "<\/" for this reason.

        On 4/8/2011 2:09 PM, Stephan Beal wrote:
        > Hello, Jsonites,
        >
        > i'm a bit confused on a small grammatic detail of JSON:
        >
        > if i'm reading the grammar chart on http://www.json.org/ correctly,
        > forward slashes (/) are supposed to be escaped in JSON. However, the
        > JSON class provided with my browsers (Chrome and FF, both of which i
        > assume are fairly standards/RFC-compliant) do not escape such characters.
        >
        > Is backslash-escaping forward slashes required? If so, what is the
        > justification for it? (i ask because i find it unnecessary and hard to
        > look at.)
        --------------
      */
                      if( escapeFwdSlash ) escChar[1] = '/';
                      break;
                  case '\\': escChar[1] = '\\'; break;
                  case '"': escChar[1] = '"'; break;
                  default: break;
                }
                if( escChar[1])
                {
                    rc = f(state, escChar, 2);
                }
                else
                {
                    rc = f(state, (char const *)pos, clen);
                }
                continue;
            }
            else
            { /* UTF: transform it to \uXXXX */
#if defined(CSON_FOSSIL_MODE)
                assume_latin1:
#endif
                memset(ubuf,0,UBLen);
                if(ch <= 0xFFFF){
                    rc = snprintf(ubuf, (size_t)UBLen, "\\u%04x",ch);
                    if( rc != 6 )
                    {
                        rc = CSON_RC_RangeError;
                        break;
                    }
                    rc = f( state, ubuf, 6 );
                }else{ /* encode as a UTF16 surrogate pair */
                    /* http://unicodebook.readthedocs.org/en/latest/unicode_encodings.html#surrogates */
                    ch -= 0x10000;
                    rc = snprintf(ubuf, (size_t)UBLen, "\\u%04x\\u%04x",
                                  (0xd800 | (ch>>10)),
                                  (0xdc00 | (ch & 0x3ff)));
                    if( rc != 12 )
                    {
                        rc = CSON_RC_RangeError;
                        break;
                    }
                    rc = f( state, ubuf, 12 );
                }
                continue;
            }
        }
        if( 0 == rc )
        {
            rc = f(state, "\"", 1 );
        }
        return rc;
    }
}

int cson_object_iter_init( cson_object const * obj, cson_object_iterator * iter )
{
    if( ! obj || !iter ) return CSON_RC_ArgError;
    else
    {
        iter->obj = obj;
        iter->pos = 0;
        return 0;
    }
}

cson_kvp * cson_object_iter_next( cson_object_iterator * iter )
{
    if( ! iter || !iter->obj ) return NULL;
    else if( iter->pos >= iter->obj->kvp.count ) return NULL;
    else
    {
        cson_kvp * rc = iter->obj->kvp.list[iter->pos++];
        while( (NULL==rc) && (iter->pos < iter->obj->kvp.count))
        {
            rc = iter->obj->kvp.list[iter->pos++];
        }
        return rc;
    }
}

static int cson_output_null( cson_data_dest_f f, void * state )
{
    if( !f ) return CSON_RC_ArgError;
    else
    {
        return f(state, "null", 4);
    }
}

static int cson_output_bool( cson_value const * src, cson_data_dest_f f, void * state )
{
    if( !f ) return CSON_RC_ArgError;
    else
    {
        char const v = cson_value_get_bool(src);
        return f(state, v ? "true" : "false", v ? 4 : 5);
    }
}

static int cson_output_integer( cson_value const * src, cson_data_dest_f f, void * state )
{
    if( !f ) return CSON_RC_ArgError;
    else if( !cson_value_is_integer(src) ) return CSON_RC_TypeError;
    else
    {
        enum { BufLen = 100 };
        char b[BufLen];
        int rc;
        memset( b, 0, BufLen );
        rc = snprintf( b, (size_t)BufLen, "%"CSON_INT_T_PFMT,
                       cson_value_get_integer(src) );
        return ( rc<=0 )
            ? CSON_RC_RangeError
            : f( state, b, (unsigned int)rc )
            ;
    }
}

static int cson_output_double( cson_value const * src, cson_data_dest_f f, void * state )
{
    if( !f ) return CSON_RC_ArgError;
    else if( !cson_value_is_double(src) ) return CSON_RC_TypeError;
    else
    {
        enum { BufLen = 128 /* this must be relatively large or huge
                               doubles can cause us to overrun here,
                               resulting in stack-smashing errors.
                            */};
        char b[BufLen];
        int rc;
        memset( b, 0, BufLen );
        rc = snprintf( b, (size_t)BufLen, "%"CSON_DOUBLE_T_PFMT,
                       cson_value_get_double(src) );
        if( rc<=0 ) return CSON_RC_RangeError;
        else if(1)
        { /* Strip trailing zeroes before passing it on... */
            unsigned int urc = (unsigned int)rc;
            char * pos = b + urc - 1;
            for( ; ('0' == *pos) && urc && (*(pos-1) != '.'); --pos, --urc )
            {
                *pos = 0;
            }
            assert(urc && *pos);
            return f( state, b, urc );
        }
        else
        {
            unsigned int urc = (unsigned int)rc;
            return f( state, b, urc );
        }
        return 0;
    }
}

static int cson_output_string( cson_value const * src, char escapeFwdSlash, cson_data_dest_f f, void * state )
{
    if( !f ) return CSON_RC_ArgError;
    else if( ! cson_value_is_string(src) ) return CSON_RC_TypeError;
    else
    {
        cson_string const * str = cson_value_get_string(src);
        assert( NULL != str );
        return cson_str_to_json(cson_string_cstr(str), str->length, escapeFwdSlash, f, state);
    }
}


/**
   Outputs indention spacing to f().

   blanks: (0)=no indentation, (1)=1 TAB per/level, (>1)=n spaces/level

   depth is the current depth of the output tree, and determines how much
   indentation to generate.

   If blanks is 0 this is a no-op. Returns non-0 on error, and the
   error code will always come from f().
*/
static int cson_output_indent( cson_data_dest_f f, void * state,
                               unsigned char blanks, unsigned int depth )
{
    if( 0 == blanks ) return 0;
    else
    {
#if 0
        /* FIXME: stuff the indention into the buffer and make a single
           call to f().
        */
        enum { BufLen = 200 };
        char buf[BufLen];
#endif
        unsigned int i;
        unsigned int x;
        char const ch = (1==blanks) ? '\t' : ' ';
        int rc = f(state, "\n", 1 );
        for( i = 0; (i < depth) && (0 == rc); ++i )
        {
            for( x = 0; (x < blanks) && (0 == rc); ++x )
            {
                rc = f(state, &ch, 1);
            }
        }
        return rc;
    }
}

static int cson_output_array( cson_value const * src, cson_data_dest_f f, void * state,
                              cson_output_opt const * fmt, unsigned int level );
static int cson_output_object( cson_value const * src, cson_data_dest_f f, void * state,
                               cson_output_opt const * fmt, unsigned int level );
/**
   Main cson_output() implementation. Dispatches to a different impl depending
   on src->api->typeID.

   Returns 0 on success.
*/
static int cson_output_impl( cson_value const * src, cson_data_dest_f f, void * state,
                             cson_output_opt const * fmt, unsigned int level )
{
    if( ! src || !f || !src->api ) return CSON_RC_ArgError;
    else
    {
        int rc = 0;
        assert(fmt);
        switch( src->api->typeID )
        {
          case CSON_TYPE_UNDEF:
          case CSON_TYPE_NULL:
              rc = cson_output_null(f, state);
              break;
          case CSON_TYPE_BOOL:
              rc = cson_output_bool(src, f, state);
              break;
          case CSON_TYPE_INTEGER:
              rc = cson_output_integer(src, f, state);
              break;
          case CSON_TYPE_DOUBLE:
              rc = cson_output_double(src, f, state);
              break;
          case CSON_TYPE_STRING:
              rc = cson_output_string(src, fmt->escapeForwardSlashes, f, state);
              break;
          case CSON_TYPE_ARRAY:
              rc = cson_output_array( src, f, state, fmt, level );
              break;
          case CSON_TYPE_OBJECT:
              rc = cson_output_object( src, f, state, fmt, level );
              break;
          default:
              rc = CSON_RC_TypeError;
              break;
        }
        return rc;
    }
}


static int cson_output_array( cson_value const * src, cson_data_dest_f f, void * state,
                              cson_output_opt const * fmt, unsigned int level )
{
    if( !src || !f || !fmt ) return CSON_RC_ArgError;
    else if( ! cson_value_is_array(src) ) return CSON_RC_TypeError;
    else if( level > fmt->maxDepth ) return CSON_RC_RangeError;
    else
    {
        int rc;
        unsigned int i;
        cson_value const * v;
        char doIndent = fmt->indentation ? 1 : 0;
        cson_array const * ar = cson_value_get_array(src);
        assert( NULL != ar );
        if( 0 == ar->list.count )
        {
            return f(state, "[]", 2 );
        }
        else if( (1 == ar->list.count) && !fmt->indentSingleMemberValues ) doIndent = 0;
        rc = f(state, "[", 1);
        ++level;
        if( doIndent )
        {
            rc = cson_output_indent( f, state, fmt->indentation, level );
        }
        for( i = 0; (i < ar->list.count) && (0 == rc); ++i )
        {
            v = ar->list.list[i];
            if( v )
            {
                rc = cson_output_impl( v, f, state, fmt, level );
            }
            else
            {
                rc = cson_output_null( f, state );
            }
            if( 0 == rc )
            {
                if(i < (ar->list.count-1))
                {
                    rc = f(state, ",", 1);
                    if( 0 == rc )
                    {
                        rc = doIndent
                            ? cson_output_indent( f, state, fmt->indentation, level )
                            : 0 /*f( state, " ", 1 )*/;
                    }
                }
            }
        }
        --level;
        if( doIndent && (0 == rc) )
        {
            rc = cson_output_indent( f, state, fmt->indentation, level );
        }
        return (0 == rc)
            ? f(state, "]", 1)
            : rc;
    }
}

static int cson_output_object( cson_value const * src, cson_data_dest_f f, void * state,
                               cson_output_opt const * fmt, unsigned int level )
{
    if( !src || !f || !fmt ) return CSON_RC_ArgError;
    else if( ! cson_value_is_object(src) ) return CSON_RC_TypeError;
    else if( level > fmt->maxDepth ) return CSON_RC_RangeError;
    else
    {
        int rc;
        unsigned int i;
        cson_kvp const * kvp;
        char doIndent = fmt->indentation ? 1 : 0;
        cson_object const * obj = cson_value_get_object(src);
        assert( (NULL != obj) && (NULL != fmt));
        if( 0 == obj->kvp.count )
        {
            return f(state, "{}", 2 );
        }
        else if( (1 == obj->kvp.count) && !fmt->indentSingleMemberValues ) doIndent = 0;
        rc = f(state, "{", 1);
        ++level;
        if( doIndent )
        {
            rc = cson_output_indent( f, state, fmt->indentation, level );
        }
        for( i = 0; (i < obj->kvp.count) && (0 == rc); ++i )
        {
            kvp = obj->kvp.list[i];
            if( kvp && kvp->key )
            {
                cson_string const * sKey = cson_value_get_string(kvp->key);
                char const * cKey = cson_string_cstr(sKey);
                rc = cson_str_to_json(cKey, sKey->length,
                                      fmt->escapeForwardSlashes, f, state);
                if( 0 == rc )
                {
                    rc = fmt->addSpaceAfterColon
                        ? f(state, ": ", 2 )
                        : f(state, ":", 1 )
                        ;
                }
                if( 0 == rc)
                {
                    rc = ( kvp->value )
                        ? cson_output_impl( kvp->value, f, state, fmt, level )
                        : cson_output_null( f, state );
                }
            }
            else
            {
                assert( 0 && "Possible internal error." );
                continue /* internal error? */;
            }
            if( 0 == rc )
            {
                if(i < (obj->kvp.count-1))
                {
                    rc = f(state, ",", 1);
                    if( 0 == rc )
                    {
                        rc = doIndent
                            ? cson_output_indent( f, state, fmt->indentation, level )
                            : 0 /*f( state, " ", 1 )*/;
                    }
                }
            }
        }
        --level;
        if( doIndent && (0 == rc) )
        {
            rc = cson_output_indent( f, state, fmt->indentation, level );
        }
        return (0 == rc)
            ? f(state, "}", 1)
            : rc;
    }
}

int cson_output( cson_value const * src, cson_data_dest_f f,
                 void * state, cson_output_opt const * fmt )
{
    int rc;
    if(! fmt ) fmt = &cson_output_opt_empty;
    rc = cson_output_impl(src, f, state, fmt, 0 );
    if( (0 == rc) && fmt->addNewline )
    {
        rc = f(state, "\n", 1);
    }
    return rc;
}

int cson_data_dest_FILE( void * state, void const * src, unsigned int n )
{
    if( ! state ) return CSON_RC_ArgError;
    else if( !src || !n ) return 0;
    else
    {
        return ( 1 == fwrite( src, n, 1, (FILE*) state ) )
            ? 0
            : CSON_RC_IOError;
    }
}

int cson_output_FILE( cson_value const * src, FILE * dest, cson_output_opt const * fmt )
{
    int rc = 0;
    if( fmt )
    {
        rc = cson_output( src, cson_data_dest_FILE, dest, fmt );
    }
    else
    {
        /* We normally want a newline on FILE output. */
        cson_output_opt opt = cson_output_opt_empty;
        opt.addNewline = 1;
        rc = cson_output( src, cson_data_dest_FILE, dest, &opt );
    }
    if( 0 == rc )
    {
        fflush( dest );
    }
    return rc;
}

int cson_output_filename( cson_value const * src, char const * dest, cson_output_opt const * fmt )
{
    if( !src || !dest ) return CSON_RC_ArgError;
    else
    {
        FILE * f = fopen(dest,"wb");
        if( !f ) return CSON_RC_IOError;
        else
        {
            int const rc = cson_output_FILE( src, f, fmt );
            fclose(f);
            return rc;
        }
    }
}

int cson_parse_filename( cson_value ** tgt, char const * src,
                         cson_parse_opt const * opt, cson_parse_info * err )
{
    if( !src || !tgt ) return CSON_RC_ArgError;
    else
    {
        FILE * f = fopen(src, "r");
        if( !f ) return CSON_RC_IOError;
        else
        {
            int const rc = cson_parse_FILE( tgt, f, opt, err );
            fclose(f);
            return rc;
        }
    }
}

/** Internal type to hold state for a JSON input string.
 */
typedef struct cson_data_source_StringSource_
{
    /** Start of input string. */
    char const * str;
    /** Current iteration position. Must initially be == str. */
    char const * pos;
    /** Logical EOF, one-past-the-end of str. */
    char const * end;
}  cson_data_source_StringSource_t;

/**
   A cson_data_source_f() implementation which requires the state argument
   to be a properly populated (cson_data_source_StringSource_t*).
*/
static int cson_data_source_StringSource( void * state, void * dest, unsigned int * n )
{
    if( !state || !n || !dest ) return CSON_RC_ArgError;
    else if( !*n ) return 0 /* ignore this */;
    else
    {
        unsigned int i;
        cson_data_source_StringSource_t * ss = (cson_data_source_StringSource_t*) state;
        unsigned char * tgt = (unsigned char *)dest;
        for( i = 0; (i < *n) && (ss->pos < ss->end); ++i, ++ss->pos, ++tgt )
        {
            *tgt = *ss->pos;
        }
        *n = i;
        return 0;
    }
}

int cson_parse_string( cson_value ** tgt, char const * src, unsigned int len,
                       cson_parse_opt const * opt, cson_parse_info * err )
{
    if( ! tgt || !src ) return CSON_RC_ArgError;
    else if( !*src || (len<2/*2==len of {} and []*/) ) return CSON_RC_RangeError;
    else
    {
        cson_data_source_StringSource_t ss;
        ss.str = ss.pos = src;
        ss.end = src + len;
        return cson_parse( tgt, cson_data_source_StringSource, &ss, opt, err );
    }

}

int cson_parse_buffer( cson_value ** tgt,
                       cson_buffer const * buf,
                       cson_parse_opt const * opt,
                       cson_parse_info * err )
{
    return ( !tgt || !buf || !buf->mem || !buf->used )
        ? CSON_RC_ArgError
        : cson_parse_string( tgt, (char const *)buf->mem,
                             buf->used, opt, err );
}

int cson_buffer_reserve( cson_buffer * buf, cson_size_t n )
{
    if( ! buf ) return CSON_RC_ArgError;
    else if( 0 == n )
    {
        cson_free(buf->mem, "cson_buffer::mem");
        *buf = cson_buffer_empty;
        return 0;
    }
    else if( buf->capacity >= n )
    {
        return 0;
    }
    else
    {
        unsigned char * x = (unsigned char *)cson_realloc( buf->mem, n, "cson_buffer::mem" );
        if( ! x ) return CSON_RC_AllocError;
        memset( x + buf->used, 0, n - buf->used );
        buf->mem = x;
        buf->capacity = n;
        ++buf->timesExpanded;
        return 0;
    }
}

cson_size_t cson_buffer_fill( cson_buffer * buf, char c )
{
    if( !buf || !buf->capacity || !buf->mem ) return 0;
    else
    {
        memset( buf->mem, c, buf->capacity );
        return buf->capacity;
    }
}

/**
   cson_data_dest_f() implementation, used by cson_output_buffer().

   arg MUST be a (cson_buffer*). This function appends n bytes at
   position arg->used, expanding the buffer as necessary.
*/
static int cson_data_dest_cson_buffer( void * arg, void const * data_, unsigned int n )
{
    if( !arg ) return CSON_RC_ArgError;
    else if( ! n ) return 0;
    else
    {
        cson_buffer * sb = (cson_buffer*)arg;
        char const * data = (char const *)data_;
        cson_size_t npos = sb->used + n;
        unsigned int i;
        if( npos >= sb->capacity )
        {
            const cson_size_t oldCap = sb->capacity;
            const cson_size_t asz = npos * 2;
            if( asz < npos ) return CSON_RC_ArgError; /* overflow */
            else if( 0 != cson_buffer_reserve( sb, asz ) ) return CSON_RC_AllocError;
            assert( (sb->capacity > oldCap) && "Internal error in memory buffer management!" );
            /* make sure it gets NUL terminated. */
            memset( sb->mem + oldCap, 0, (sb->capacity - oldCap) );
        }
        for( i = 0; i < n; ++i, ++sb->used )
        {
            sb->mem[sb->used] = data[i];
        }
        return 0;
    }
}


int cson_output_buffer( cson_value const * v, cson_buffer * buf,
                        cson_output_opt const * opt )
{
    int rc = cson_output( v, cson_data_dest_cson_buffer, buf, opt );
    if( 0 == rc )
    { /* Ensure that the buffer is null-terminated. */
        rc = cson_buffer_reserve( buf, buf->used + 1 );
        if( 0 == rc )
        {
            buf->mem[buf->used] = 0;
        }
    }
    return rc;
}

/** @internal

Tokenizes an input string on a given separator. Inputs are:

- (inp) = is a pointer to the pointer to the start of the input.

- (separator) = the separator character

- (end) = a pointer to NULL. i.e. (*end == NULL)

This function scans *inp for the given separator char or a NUL char.
Successive separators at the start of *inp are skipped. The effect is
that, when this function is called in a loop, all neighboring
separators are ignored. e.g. the string "aa.bb...cc" will tokenize to
the list (aa,bb,cc) if the separator is '.' and to (aa.,...cc) if the
separator is 'b'.

Returns 0 (false) if it finds no token, else non-0 (true).

Output:

- (*inp) will be set to the first character of the next token.

- (*end) will point to the one-past-the-end point of the token.

If (*inp == *end) then the end of the string has been reached
without finding a token.

Post-conditions:

- (*end == *inp) if no token is found.

- (*end > *inp) if a token is found.

It is intolerant of NULL values for (inp, end), and will assert() in
debug builds if passed NULL as either parameter.
*/
static char cson_next_token( char const ** inp, char separator, char const ** end )
{
    char const * pos = NULL;
    assert( inp && end && *inp );
    if( *inp == *end ) return 0;
    pos = *inp;
    if( !*pos )
    {
        *end = pos;
        return 0;
    }
    for( ; *pos && (*pos == separator); ++pos) { /* skip preceeding splitters */ }
    *inp = pos;
    for( ; *pos && (*pos != separator); ++pos) { /* find next splitter */ }
    *end = pos;
    return (pos > *inp) ? 1 : 0;
}

int cson_object_fetch_sub2( cson_object const * obj, cson_value ** tgt, char const * path )
{
    if( ! obj || !path ) return CSON_RC_ArgError;
    else if( !*path || !*(1+path) ) return CSON_RC_RangeError;
    else return cson_object_fetch_sub(obj, tgt, path+1, *path);
}

int cson_object_fetch_sub( cson_object const * obj, cson_value ** tgt, char const * path, char sep )
{
    if( ! obj || !path ) return CSON_RC_ArgError;
    else if( !*path || !sep ) return CSON_RC_RangeError;
    else
    {
        char const * beg = path;
        char const * end = NULL;
        int rc;
        unsigned int i, len;
        unsigned int tokenCount = 0;
        cson_value * cv = NULL;
        cson_object const * curObj = obj;
        enum { BufSize = 128 };
        char buf[BufSize];
        memset( buf, 0, BufSize );

        while( cson_next_token( &beg, sep, &end ) )
        {
            if( beg == end ) break;
            else
            {
                ++tokenCount;
                beg = end;
                end = NULL;
            }
        }
        if( 0 == tokenCount ) return CSON_RC_RangeError;
        beg = path;
        end = NULL;
        for( i = 0; i < tokenCount; ++i, beg=end, end=NULL )
        {
            rc = cson_next_token( &beg, sep, &end );
            assert( 1 == rc );
            assert( beg != end );
            assert( end > beg );
            len = end - beg;
            if( len > (BufSize-1) ) return CSON_RC_RangeError;
            memset( buf, 0, len + 1 );
            memcpy( buf, beg, len );
            buf[len] = 0;
            cv = cson_object_get( curObj, buf );
            if( NULL == cv ) return CSON_RC_NotFoundError;
            else if( i == (tokenCount-1) )
            {
                if(tgt) *tgt = cv;
                return 0;
            }
            else if( cson_value_is_object(cv) )
            {
                curObj = cson_value_get_object(cv);
                assert((NULL != curObj) && "Detected mis-management of internal memory!");
            }
            /* TODO: arrays. Requires numeric parsing for the index. */
            else
            {
                return CSON_RC_NotFoundError;
            }
        }
        assert( i == tokenCount );
        return CSON_RC_NotFoundError;
    }
}

cson_value * cson_object_get_sub( cson_object const * obj, char const * path, char sep )
{
    cson_value * v = NULL;
    cson_object_fetch_sub( obj, &v, path, sep );
    return v;
}

cson_value * cson_object_get_sub2( cson_object const * obj, char const * path )
{
    cson_value * v = NULL;
    cson_object_fetch_sub2( obj, &v, path );
    return v;
}


/**
   If v is-a Object or Array then this function returns a deep
   clone, otherwise it returns v. In either case, the refcount
   of the returned value is increased by 1 by this call.
*/
static cson_value * cson_value_clone_ref( cson_value * v )
{
    cson_value * rc = NULL;
#define TRY_SHARING 1
#if TRY_SHARING
    if(!v ) return rc;
    else if( cson_value_is_object(v)
             || cson_value_is_array(v))
    {
        rc = cson_value_clone( v );
    }
    else
    {
        rc = v;
    }
#else
    rc = cson_value_clone(v);
#endif
#undef TRY_SHARING
    cson_value_add_reference(rc);
    return rc;
}
    
static cson_value * cson_value_clone_array( cson_value const * orig )
{
    unsigned int i = 0;
    cson_array const * asrc = cson_value_get_array( orig );
    unsigned int alen = cson_array_length_get( asrc );
    cson_value * destV = NULL;
    cson_array * destA = NULL;
    assert( orig && asrc );
    destV = cson_value_new_array();
    if( NULL == destV ) return NULL;
    destA = cson_value_get_array( destV );
    assert( destA );
    if( 0 != cson_array_reserve( destA, alen ) )
    {
        cson_value_free( destV );
        return NULL;
    }
    for( ; i < alen; ++i )
    {
        cson_value * ch = cson_array_get( asrc, i );
        if( NULL != ch )
        {
            cson_value * cl = cson_value_clone_ref( ch );
            if( NULL == cl )
            {
                cson_value_free( destV );
                return NULL;
            }
            if( 0 != cson_array_set( destA, i, cl ) )
            {
                cson_value_free( cl );
                cson_value_free( destV );
                return NULL;
            }
            cson_value_free(cl)/*remove our artificial reference */;
        }
    }
    return destV;
}
    
static cson_value * cson_value_clone_object( cson_value const * orig )
{
    cson_object const * src = cson_value_get_object( orig );
    cson_value * destV = NULL;
    cson_object * dest = NULL;
    cson_kvp const * kvp = NULL;
    cson_object_iterator iter = cson_object_iterator_empty;
    assert( orig && src );
    if( 0 != cson_object_iter_init( src, &iter ) )
    {
        return NULL;
    }
    destV = cson_value_new_object();
    if( NULL == destV ) return NULL;
    dest = cson_value_get_object( destV );
    assert( dest );
    if( src->kvp.count > cson_kvp_list_reserve( &dest->kvp, src->kvp.count ) ){
        cson_value_free( destV );
        return NULL;
    }
    while( (kvp = cson_object_iter_next( &iter )) )
    {
        cson_value * key = NULL;
        cson_value * val = NULL;
        assert( kvp->key && (kvp->key->refcount>0) );
        key = cson_value_clone_ref(kvp->key);
        val = key ? cson_value_clone_ref(kvp->value) : NULL;
        if( ! key || !val ){
            goto error;
        }
        assert( CSON_STR(key) );
        if( 0 != cson_object_set_s( dest, CSON_STR(key), val ) )
        {
            goto error;
        }
        /* remove our references */
        cson_value_free(key);
        cson_value_free(val);
        continue;
        error:
        cson_value_free(key);
        cson_value_free(val);
        cson_value_free(destV);
        destV = NULL;
        break;
    }
    return destV;
}

cson_value * cson_value_clone( cson_value const * orig )
{
    if( NULL == orig ) return NULL;
    else
    {
        switch( orig->api->typeID )
        {
          case CSON_TYPE_UNDEF:
              assert(0 && "This should never happen.");
              return NULL;
          case CSON_TYPE_NULL:
              return cson_value_null();
          case CSON_TYPE_BOOL:
              return cson_value_new_bool( cson_value_get_bool( orig ) );
          case CSON_TYPE_INTEGER:
              return cson_value_new_integer( cson_value_get_integer( orig ) );
              break;
          case CSON_TYPE_DOUBLE:
              return cson_value_new_double( cson_value_get_double( orig ) );
              break;
          case CSON_TYPE_STRING: {
              cson_string const * str = cson_value_get_string( orig );
              return cson_value_new_string( cson_string_cstr( str ),
                                            cson_string_length_bytes( str ) );
          }
          case CSON_TYPE_ARRAY:
              return cson_value_clone_array( orig );
          case CSON_TYPE_OBJECT:
              return cson_value_clone_object( orig );
        }
        assert( 0 && "We can't get this far." );
        return NULL;
    }
}

cson_value * cson_string_value(cson_string const * s)
{
#define MT CSON_SPECIAL_VALUES[CSON_VAL_STR_EMPTY]
    return s
        ? ((s==MT.value) ? &MT : CSON_VCAST(s))
        : NULL;
#undef MT
}

cson_value * cson_object_value(cson_object const * s)
{
    return s
        ? CSON_VCAST(s)
        : NULL;
}


cson_value * cson_array_value(cson_array const * s)
{
    return s
        ? CSON_VCAST(s)
        : NULL;
}

void cson_free_object(cson_object *x)
{
    if(x) cson_value_free(cson_object_value(x));
}
void cson_free_array(cson_array *x)
{
    if(x) cson_value_free(cson_array_value(x));
}

void cson_free_string(cson_string *x)
{
    if(x) cson_value_free(cson_string_value(x));
}
void cson_free_value(cson_value *x)
{
    if(x) cson_value_free(x);
}


#if 0
/* i'm not happy with this... */
char * cson_pod_to_string( cson_value const * orig )
{
    if( ! orig ) return NULL;
    else
    {
        enum { BufSize = 64 };
        char * v = NULL;
        switch( orig->api->typeID )
        {
          case CSON_TYPE_BOOL: {
              char const bv = cson_value_get_bool(orig);
              v = cson_strdup( bv ? "true" : "false",
                               bv ? 4 : 5 );
              break;
          }
          case CSON_TYPE_UNDEF:
          case CSON_TYPE_NULL: {
              v = cson_strdup( "null", 4 );
              break;
          }
          case CSON_TYPE_STRING: {
              cson_string const * jstr = cson_value_get_string(orig);
              unsigned const int slen = cson_string_length_bytes( jstr );
              assert( NULL != jstr );
              v = cson_strdup( cson_string_cstr( jstr ), slen );
              break;
          }
          case CSON_TYPE_INTEGER: {
              char buf[BufSize] = {0};
              if( 0 < snprintf( v, (size_t)BufSize, "%"CSON_INT_T_PFMT,
                                cson_value_get_integer(orig)) )
              {
                  v = cson_strdup( buf, strlen(buf) );
              }
              break;
          }
          case CSON_TYPE_DOUBLE: {
              char buf[BufSize] = {0};
              if( 0 < snprintf( v, (size_t)BufSize, "%"CSON_DOUBLE_T_PFMT,
                                cson_value_get_double(orig)) )
              {
                  v = cson_strdup( buf, strlen(buf) );
              }
              break;
          }
          default:
              break;
        }
        return v;
    }
}
#endif

#if 0
/* i'm not happy with this... */
char * cson_pod_to_string( cson_value const * orig )
{
    if( ! orig ) return NULL;
    else
    {
        enum { BufSize = 64 };
        char * v = NULL;
        switch( orig->api->typeID )
        {
          case CSON_TYPE_BOOL: {
              char const bv = cson_value_get_bool(orig);
              v = cson_strdup( bv ? "true" : "false",
                               bv ? 4 : 5 );
              break;
          }
          case CSON_TYPE_UNDEF:
          case CSON_TYPE_NULL: {
              v = cson_strdup( "null", 4 );
              break;
          }
          case CSON_TYPE_STRING: {
              cson_string const * jstr = cson_value_get_string(orig);
              unsigned const int slen = cson_string_length_bytes( jstr );
              assert( NULL != jstr );
              v = cson_strdup( cson_string_cstr( jstr ), slen );
              break;
          }
          case CSON_TYPE_INTEGER: {
              char buf[BufSize] = {0};
              if( 0 < snprintf( v, (size_t)BufSize, "%"CSON_INT_T_PFMT,
                               cson_value_get_integer(orig)) )
              {
                  v = cson_strdup( buf, strlen(buf) );
              }
              break;
          }
          case CSON_TYPE_DOUBLE: {
              char buf[BufSize] = {0};
              if( 0 < snprintf( v, (size_t)BufSize, "%"CSON_DOUBLE_T_PFMT,
                                cson_value_get_double(orig)) )
              {
                  v = cson_strdup( buf, strlen(buf) );
              }
              break;
          }
          default:
              break;
        }
        return v;
    }
}
#endif

unsigned int cson_value_msize(cson_value const * v)
{
    if(!v) return 0;
    else if( cson_value_is_builtin(v) ) return 0;
    else {
        unsigned int rc = sizeof(cson_value);
        assert(NULL != v->api);
        switch(v->api->typeID){
          case CSON_TYPE_INTEGER:
              assert( v != &CSON_SPECIAL_VALUES[CSON_VAL_INT_0]);
              rc += sizeof(cson_int_t);
              break;
          case CSON_TYPE_DOUBLE:
              assert( v != &CSON_SPECIAL_VALUES[CSON_VAL_DBL_0]);
              rc += sizeof(cson_double_t);
              break;
          case CSON_TYPE_STRING:
              rc += sizeof(cson_string)
                  + CSON_STR(v)->length + 1/*NUL*/;
              break;
          case CSON_TYPE_ARRAY:{
              cson_array const * ar = CSON_ARRAY(v);
              cson_value_list const * li;
              unsigned int i = 0;
              assert( NULL != ar );
              li = &ar->list;
              rc += sizeof(cson_array)
                  + (li->alloced * sizeof(cson_value *));
              for( ; i < li->count; ++i ){
                  cson_value const * e = ar->list.list[i];
                  if( e ) rc += cson_value_msize( e );
              }
              break;
          }
          case CSON_TYPE_OBJECT:{
              cson_object const * obj = CSON_OBJ(v);
              unsigned int i = 0;
              cson_kvp_list const * kl;
              assert(NULL != obj);
              kl = &obj->kvp;
              rc += sizeof(cson_object)
                  + (kl->alloced * sizeof(cson_kvp*));
              for( ; i < kl->count; ++i ){
                  cson_kvp const * kvp = kl->list[i];
                  assert(NULL != kvp);
                  rc += cson_value_msize(kvp->key);
                  rc += cson_value_msize(kvp->value);
              }
              break;
          }
          case CSON_TYPE_UNDEF:
          case CSON_TYPE_NULL:
          case CSON_TYPE_BOOL:
              assert( 0 && "Should have been caught by is-builtin check!" );
              break;
          default:
              assert(0 && "Invalid typeID!");
              return 0;
#undef RCCHECK
        }
        return rc;
    }
}

int cson_object_merge( cson_object * dest, cson_object const * src, int flags ){
    cson_object_iterator iter = cson_object_iterator_empty;
    int rc;
    char const replace = (flags & CSON_MERGE_REPLACE);
    char const recurse = !(flags & CSON_MERGE_NO_RECURSE);
    cson_kvp const * kvp;
    if((!dest || !src) || (dest==src)) return CSON_RC_ArgError;
    rc = cson_object_iter_init( src, &iter );
    if(rc) return rc;
    while( (kvp = cson_object_iter_next(&iter) ) )
    {
        cson_string * key = cson_kvp_key(kvp);
        cson_value * val = cson_kvp_value(kvp);
        cson_value * check = cson_object_get_s( dest, key );
        if(!check){
            cson_object_set_s( dest, key, val );
            continue;
        }
        else if(!replace && !recurse) continue;
        else if(replace && !recurse){
            cson_object_set_s( dest, key, val );
            continue;
        }
        else if( recurse ){
            if( cson_value_is_object(check) &&
                cson_value_is_object(val) ){
                rc = cson_object_merge( cson_value_get_object(check),
                                        cson_value_get_object(val),
                                        flags );
                if(rc) return rc;
                else continue;
            }
            else continue;
        }
        else continue;
    }
    return 0;
}

static cson_value * cson_guess_arg_type(char const *arg){
    char * end = NULL;
    if(!arg || !*arg) return cson_value_null();
    else if(('0'>*arg) || ('9'<*arg)){
        goto do_string;
    }
    else{ /* try numbers... */
        long const val = strtol(arg, &end, 10);
        if(!*end){
            return cson_value_new_integer( (cson_int_t)val);
        }
        else if( '.' != *end ) {
            goto do_string;
        }
        else {
            double const val = strtod(arg, &end);
            if(!*end){
                return cson_value_new_double(val);
            }
        }
    }
    do_string:
    return cson_value_new_string(arg, strlen(arg));
}


int cson_parse_argv_flags( int argc, char const * const * argv,
                           cson_object ** tgt, unsigned int * count ){
    cson_object * o = NULL;
    int rc = 0;
    int i = 0;
    if(argc<1 || !argc || !tgt) return CSON_RC_ArgError;
    o = *tgt ? *tgt : cson_new_object();
    if(count) *count = 0;
    for( i = 0; i < argc; ++i ){
        char const * arg = argv[i];
        char const * key = arg;
        char const * pos;
        cson_string * k = NULL;
        cson_value * v = NULL;
        if('-' != *arg) continue;
        while('-'==*key) ++key;
        if(!*key) continue;
        pos = key;
        while( *pos && ('=' != *pos)) ++pos;
        k = cson_new_string(key, pos-key);
        if(!k){
            rc = CSON_RC_AllocError;
            break;
        }
        if(!*pos){ /** --key */
            v = cson_value_true();
        }else{ /** --key=...*/
            assert('=' == *pos);
            ++pos /*skip '='*/;
            v = cson_guess_arg_type(pos);
        }
        if(0 != (rc=cson_object_set_s(o, k, v))){
            cson_free_string(k);
            cson_value_free(v);
            break;
        }
        else if(count) ++*count;
    }
    if(o != *tgt){
        if(rc) cson_free_object(o);
        else *tgt = o;
    }
    return rc;
}

#if defined(__cplusplus)
} /*extern "C"*/
#endif

#undef MARKER
#undef CSON_OBJECT_PROPS_SORT
#undef CSON_OBJECT_PROPS_SORT_USE_LENGTH
#undef CSON_CAST
#undef CSON_INT
#undef CSON_DBL
#undef CSON_STR
#undef CSON_OBJ
#undef CSON_ARRAY
#undef CSON_VCAST
#undef CSON_MALLOC_IMPL
#undef CSON_FREE_IMPL
#undef CSON_REALLOC_IMPL
/* end file ./cson.c */
/* begin file ./cson_lists.h */
/* Auto-generated from cson_list.h. Edit at your own risk! */
unsigned int cson_value_list_reserve( cson_value_list * self, unsigned int n )
{
    if( !self ) return 0;
    else if(0 == n)
    {
        if(0 == self->alloced) return 0;
        cson_free(self->list, "cson_value_list_reserve");
        self->list = NULL;
        self->alloced = self->count = 0;
        return 0;
    }
    else if( self->alloced >= n )
    {
        return self->alloced;
    }
    else
    {
        size_t const sz = sizeof(cson_value *) * n;
        cson_value * * m = (cson_value **)cson_realloc( self->list, sz, "cson_value_list_reserve" );
        if( ! m ) return self->alloced;

        memset( m + self->alloced, 0, (sizeof(cson_value *)*(n-self->alloced)));
        self->alloced = n;
        self->list = m;
        return n;
    }
}
int cson_value_list_append( cson_value_list * self, cson_value * cp )
{
    if( !self || !cp ) return cson_rc.ArgError;
    else if( self->alloced > cson_value_list_reserve(self, self->count+1) )
    {
        return cson_rc.AllocError;
    }
    else
    {
        self->list[self->count++] = cp;
        return 0;
    }
}
int cson_value_list_visit( cson_value_list * self,

                        int (*visitor)(cson_value * obj, void * visitorState ),



                        void * visitorState )
{
    int rc = cson_rc.ArgError;
    if( self && visitor )
    {
        unsigned int i = 0;
        for( rc = 0; (i < self->count) && (0 == rc); ++i )
        {

            cson_value * obj = self->list[i];



            if(obj) rc = visitor( obj, visitorState );
        }
    }
    return rc;
}
void cson_value_list_clean( cson_value_list * self,

                         void (*cleaner)(cson_value * obj)



                         )
{
    if( self && cleaner && self->count )
    {
        unsigned int i = 0;
        for( ; i < self->count; ++i )
        {

            cson_value * obj = self->list[i];



            if(obj) cleaner(obj);
        }
    }
    cson_value_list_reserve(self,0);
}
unsigned int cson_kvp_list_reserve( cson_kvp_list * self, unsigned int n )
{
    if( !self ) return 0;
    else if(0 == n)
    {
        if(0 == self->alloced) return 0;
        cson_free(self->list, "cson_kvp_list_reserve");
        self->list = NULL;
        self->alloced = self->count = 0;
        return 0;
    }
    else if( self->alloced >= n )
    {
        return self->alloced;
    }
    else
    {
        size_t const sz = sizeof(cson_kvp *) * n;
        cson_kvp * * m = (cson_kvp **)cson_realloc( self->list, sz, "cson_kvp_list_reserve" );
        if( ! m ) return self->alloced;

        memset( m + self->alloced, 0, (sizeof(cson_kvp *)*(n-self->alloced)));
        self->alloced = n;
        self->list = m;
        return n;
    }
}
int cson_kvp_list_append( cson_kvp_list * self, cson_kvp * cp )
{
    if( !self || !cp ) return cson_rc.ArgError;
    else if( self->alloced > cson_kvp_list_reserve(self, self->count+1) )
    {
        return cson_rc.AllocError;
    }
    else
    {
        self->list[self->count++] = cp;
        return 0;
    }
}
int cson_kvp_list_visit( cson_kvp_list * self,

                        int (*visitor)(cson_kvp * obj, void * visitorState ),



                        void * visitorState )
{
    int rc = cson_rc.ArgError;
    if( self && visitor )
    {
        unsigned int i = 0;
        for( rc = 0; (i < self->count) && (0 == rc); ++i )
        {

            cson_kvp * obj = self->list[i];



            if(obj) rc = visitor( obj, visitorState );
        }
    }
    return rc;
}
void cson_kvp_list_clean( cson_kvp_list * self,

                         void (*cleaner)(cson_kvp * obj)



                         )
{
    if( self && cleaner && self->count )
    {
        unsigned int i = 0;
        for( ; i < self->count; ++i )
        {

            cson_kvp * obj = self->list[i];



            if(obj) cleaner(obj);
        }
    }
    cson_kvp_list_reserve(self,0);
}
/* end file ./cson_lists.h */
/* begin file ./cson_sqlite3.c */
/** @file cson_sqlite3.c

This file contains the implementation code for the cson
sqlite3-to-JSON API.

License: the same as the cson core library.

Author: Stephan Beal (http://wanderinghorse.net/home/stephan)
*/
#if CSON_ENABLE_SQLITE3 /* we do this here for the sake of the amalgamation build */
#include <assert.h>
#include <string.h> /* strlen() */

#if 0
#include <stdio.h>
#define MARKER if(1) printf("MARKER: %s:%d:%s():\t",__FILE__,__LINE__,__func__); if(1) printf
#else
#define MARKER if(0) printf
#endif

#if defined(__cplusplus)
extern "C" {
#endif

cson_value * cson_sqlite3_column_to_value( sqlite3_stmt * st, int col )
{
    if( ! st ) return NULL;
    else
    {
#if 0
        sqlite3_value * val = sqlite3_column_type(st,col);
        int const vtype = val ? sqlite3_value_type(val) : -1;
        if( ! val ) return cson_value_null();
#else
        int const vtype = sqlite3_column_type(st,col);
#endif
        switch( vtype )
        {
          case SQLITE_NULL:
              return cson_value_null();
          case SQLITE_INTEGER:
              /* FIXME: for large integers fall back to Double instead. */
              return cson_value_new_integer( (cson_int_t) sqlite3_column_int64(st, col)  );
          case SQLITE_FLOAT:
              return cson_value_new_double( sqlite3_column_double(st, col) );
          case SQLITE_BLOB: /* arguably fall through... */
          case SQLITE_TEXT: {
              char const * str = (char const *)sqlite3_column_text(st,col);
              return cson_value_new_string(str, str ? strlen(str) : 0);
          }
          default:
              return NULL;
        }
    }
}

cson_value * cson_sqlite3_column_names( sqlite3_stmt * st )
{
    cson_value * aryV = NULL;
    cson_array * ary = NULL;
    char const * colName = NULL;
    int i = 0;
    int rc = 0;
    int colCount = 0;
    assert(st);
    colCount = sqlite3_column_count(st);
    if( colCount <= 0 ) return NULL;
    
    aryV = cson_value_new_array();
    if( ! aryV ) return NULL;
    ary = cson_value_get_array(aryV);
    assert(ary);
    for( i = 0; (0 ==rc) && (i < colCount); ++i )
    {
        colName = sqlite3_column_name( st, i );
        if( ! colName ) rc = cson_rc.AllocError;
        else
        {
            rc = cson_array_set( ary, (unsigned int)i,
                    cson_value_new_string(colName, strlen(colName)) );
        }
    }
    if( 0 == rc ) return aryV;
    else
    {
        cson_value_free(aryV);
        return NULL;
    }
}


cson_value * cson_sqlite3_row_to_object2( sqlite3_stmt * st,
                                          cson_array * colNames )
{
    cson_value * rootV = NULL;
    cson_object * root = NULL;
    cson_string * colName = NULL;
    int i = 0;
    int rc = 0;
    cson_value * currentValue = NULL;
    int const colCount = sqlite3_column_count(st);
    if( !colCount || (colCount>cson_array_length_get(colNames)) ) {
        return NULL;
    }
    rootV = cson_value_new_object();
    if(!rootV) return NULL;
    root = cson_value_get_object(rootV);
    for( i = 0; i < colCount; ++i )
    {
        colName = cson_value_get_string( cson_array_get( colNames, i ) );
        if( ! colName ) goto error;
        currentValue = cson_sqlite3_column_to_value(st,i);
        if( ! currentValue ) currentValue = cson_value_null();
        rc = cson_object_set_s( root, colName, currentValue );
        if( 0 != rc )
        {
            cson_value_free( currentValue );
            goto error;
        }
    }
    goto end;
    error:
    cson_value_free( rootV );
    rootV = NULL;
    end:
    return rootV;
}


cson_value * cson_sqlite3_row_to_object( sqlite3_stmt * st )
{
#if 0
    cson_value * arV = cson_sqlite3_column_names(st);
    cson_array * ar = NULL;
    cson_value * rc = NULL;
    if(!arV) return NULL;
    ar = cson_value_get_array(arV);
    assert( NULL != ar );
    rc = cson_sqlite3_row_to_object2(st, ar);
    cson_value_free(arV);
    return rc;
#else
    cson_value * rootV = NULL;
    cson_object * root = NULL;
    char const * colName = NULL;
    int i = 0;
    int rc = 0;
    cson_value * currentValue = NULL;
    int const colCount = sqlite3_column_count(st);
    if( !colCount ) return NULL;
    rootV = cson_value_new_object();
    if(!rootV) return NULL;
    root = cson_value_get_object(rootV);
    for( i = 0; i < colCount; ++i )
    {
        colName = sqlite3_column_name( st, i );
        if( ! colName ) goto error;
        currentValue = cson_sqlite3_column_to_value(st,i);
        if( ! currentValue ) currentValue = cson_value_null();
        rc = cson_object_set( root, colName, currentValue );
        if( 0 != rc )
        {
            cson_value_free( currentValue );
            goto error;
        }
    }
    goto end;
    error:
    cson_value_free( rootV );
    rootV = NULL;
    end:
    return rootV;
#endif
}

cson_value * cson_sqlite3_row_to_array( sqlite3_stmt * st )
{
    cson_value * aryV = NULL;
    cson_array * ary = NULL;
    int i = 0;
    int rc = 0;
    int const colCount = sqlite3_column_count(st);
    if( ! colCount ) return NULL;
    aryV = cson_value_new_array();
    if( ! aryV ) return NULL;
    ary = cson_value_get_array(aryV);
    rc = cson_array_reserve(ary, (unsigned int) colCount );
    if( 0 != rc ) goto error;

    for( i = 0; i < colCount; ++i ){
        cson_value * elem = cson_sqlite3_column_to_value(st,i);
        if( ! elem ) goto error;
        rc = cson_array_append(ary,elem);
        if(0!=rc)
        {
            cson_value_free( elem );
            goto end;
        }
    }
    goto end;
    error:
    cson_value_free(aryV);
    aryV = NULL;
    end:
    return aryV;
}

    
/**
    Internal impl of cson_sqlite3_stmt_to_json() when the 'fat'
    parameter is non-0.
*/
static int cson_sqlite3_stmt_to_json_fat( sqlite3_stmt * st, cson_value ** tgt )
{
#define RETURN(RC) { if(rootV) cson_value_free(rootV); return RC; }
    if( ! tgt || !st ) return cson_rc.ArgError;
    else
    {
        cson_value * rootV = NULL;
        cson_object * root = NULL;
        cson_value * colsV = NULL;
        cson_array * cols = NULL;
        cson_value * rowsV = NULL;
        cson_array * rows = NULL;
        cson_value * objV = NULL;
        int rc = 0;
        int const colCount = sqlite3_column_count(st);
        if( colCount <= 0 ) return cson_rc.ArgError;
        rootV = cson_value_new_object();
        if( ! rootV ) return cson_rc.AllocError;
        colsV = cson_sqlite3_column_names(st);
        if( ! colsV )
        {
            cson_value_free( rootV );
            RETURN(cson_rc.AllocError);
        }
        cols = cson_value_get_array(colsV);
        assert(NULL != cols);
        root = cson_value_get_object(rootV);
        rc = cson_object_set( root, "columns", colsV );
        if( rc )
        {
            cson_value_free( colsV );
            RETURN(rc);
        }
        rowsV = cson_value_new_array();
        if( ! rowsV ) RETURN(cson_rc.AllocError);
        rc = cson_object_set( root, "rows", rowsV );
        if( rc )
        {
            cson_value_free( rowsV );
            RETURN(rc);
        }
        rows = cson_value_get_array(rowsV);
        assert(rows);
        while( SQLITE_ROW == sqlite3_step(st) )
        {
            objV = cson_sqlite3_row_to_object2(st, cols);
            if( ! objV ) RETURN(cson_rc.UnknownError);
            rc = cson_array_append( rows, objV );
            if( rc )
            {
                cson_value_free( objV );
                RETURN(rc);
            }
        }
        *tgt = rootV;
        return 0;
    }
#undef RETURN
}

/**
    Internal impl of cson_sqlite3_stmt_to_json() when the 'fat'
    parameter is 0.
*/
static int cson_sqlite3_stmt_to_json_slim( sqlite3_stmt * st, cson_value ** tgt )
{
#define RETURN(RC) { if(rootV) cson_value_free(rootV); return RC; }
    if( ! tgt || !st ) return cson_rc.ArgError;
    else
    {
        cson_value * rootV = NULL;
        cson_object * root = NULL;
        cson_value * aryV = NULL;
        cson_value * rowsV = NULL;
        cson_array * rows = NULL;
        int rc = 0;
        int const colCount = sqlite3_column_count(st);
        if( colCount <= 0 ) return cson_rc.ArgError;
        rootV = cson_value_new_object();
        if( ! rootV ) return cson_rc.AllocError;
        aryV = cson_sqlite3_column_names(st);
        if( ! aryV )
        {
            cson_value_free( rootV );
            RETURN(cson_rc.AllocError);
        }
        root = cson_value_get_object(rootV);
        rc = cson_object_set( root, "columns", aryV );
        if( rc )
        {
            cson_value_free( aryV );
            RETURN(rc);
        }
        aryV = NULL;
        rowsV = cson_value_new_array();
        if( ! rowsV ) RETURN(cson_rc.AllocError);
        rc = cson_object_set( root, "rows", rowsV );
        if( 0 != rc )
        {
            cson_value_free( rowsV );
            RETURN(rc);
        }
        rows = cson_value_get_array(rowsV);
        assert(rows);
        while( SQLITE_ROW == sqlite3_step(st) )
        {
            aryV = cson_sqlite3_row_to_array(st);
            if( ! aryV ) RETURN(cson_rc.UnknownError);
            rc = cson_array_append( rows, aryV );
            if( 0 != rc )
            {
                cson_value_free( aryV );
                RETURN(rc);
            }
        }
        *tgt = rootV;
        return 0;
    }
#undef RETURN
}

int cson_sqlite3_stmt_to_json( sqlite3_stmt * st, cson_value ** tgt, char fat )
{
    return fat
        ? cson_sqlite3_stmt_to_json_fat(st,tgt)
        : cson_sqlite3_stmt_to_json_slim(st,tgt)
        ;
}

int cson_sqlite3_sql_to_json( sqlite3 * db, cson_value ** tgt, char const * sql, char fat )
{
    if( !db || !tgt || !sql || !*sql ) return cson_rc.ArgError;
    else
    {
        sqlite3_stmt * st = NULL;
        int rc = sqlite3_prepare_v2( db, sql, -1, &st, NULL );
        if( 0 != rc ) return cson_rc.IOError /* FIXME: Better error code? */;
        rc = cson_sqlite3_stmt_to_json( st, tgt, fat );
        sqlite3_finalize( st );
        return rc;
    }        
}

int cson_sqlite3_bind_value( sqlite3_stmt * st, int ndx, cson_value const * v )
{
    int rc = 0;
    char convertErr = 0;
    if(!st) return cson_rc.ArgError;
    else if( ndx < 1 ) {
        rc = cson_rc.RangeError;
    }
    else if( cson_value_is_array(v) ){
        cson_array * ar = cson_value_get_array(v);
        unsigned int len = cson_array_length_get(ar);
        unsigned int i;
        assert(NULL != ar);
        for( i = 0; !rc && (i < len); ++i ){
            rc = cson_sqlite3_bind_value( st, (int)i+ndx,
                                          cson_array_get(ar, i));
        }
    }
    else if(!v || cson_value_is_null(v)){
        rc = sqlite3_bind_null(st,ndx);
        convertErr = 1;
    }
    else if( cson_value_is_double(v) ){
        rc = sqlite3_bind_double( st, ndx, cson_value_get_double(v) );
        convertErr = 1;
    }
    else if( cson_value_is_bool(v) ){
        rc = sqlite3_bind_int( st, ndx, cson_value_get_bool(v) ? 1 : 0 );
        convertErr = 1;
    }
    else if( cson_value_is_integer(v) ){
        rc = sqlite3_bind_int64( st, ndx, cson_value_get_integer(v) );
        convertErr = 1;
    }
    else if( cson_value_is_string(v) ){
        cson_string const * s = cson_value_get_string(v);
        rc = sqlite3_bind_text( st, ndx,
                                cson_string_cstr(s),
                                cson_string_length_bytes(s),
                                SQLITE_TRANSIENT);
        convertErr = 1;
    }
    else {
        rc = cson_rc.TypeError;
    }
    if(convertErr && rc) switch(rc){
      case SQLITE_TOOBIG:
      case SQLITE_RANGE: rc = cson_rc.RangeError; break;
      case SQLITE_NOMEM: rc = cson_rc.AllocError; break;
      case SQLITE_IOERR: rc = cson_rc.IOError; break;
      default: rc = cson_rc.UnknownError; break;
    };
    return rc;
}


#if defined(__cplusplus)
} /*extern "C"*/
#endif
#undef MARKER
#endif /* CSON_ENABLE_SQLITE3 */
/* end file ./cson_sqlite3.c */
#endif /* FOSSIL_ENABLE_JSON */
Added extsrc/cson_amalgamation.h.























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
#ifndef CSON_FOSSIL_MODE
#define CSON_FOSSIL_MODE
#endif
/* auto-generated! Do not edit! */
/* begin file include/wh/cson/cson.h */
#if !defined(WANDERINGHORSE_NET_CSON_H_INCLUDED)
#define WANDERINGHORSE_NET_CSON_H_INCLUDED 1

/*#include <stdint.h> C99: fixed-size int types. */
#include <stdio.h> /* FILE decl */

#include <stdarg.h>

/** @page page_cson cson JSON API

cson (pronounced "season") is an object-oriented C API for generating
and consuming JSON (http://www.json.org) data.

Its main claim to fame is that it can parse JSON from, and output it
to, damned near anywhere. The i/o routines use a callback function to
fetch/emit JSON data, allowing clients to easily plug in their own
implementations. Implementations are provided for string- and
FILE-based i/o.

Project home page: https://fossil.wanderinghorse.net/r/cson

Author: Stephan Beal (https://www.wanderinghorse.net/home/stephan/)

License: Dual Public Domain/MIT

The full license text is at the bottom of the main header file
(cson.h).

Examples of how to use the library are scattered throughout
the API documentation, in the test.c file in the source repo,
and in the wiki on the project's home page.
*/

#if defined(__cplusplus)
extern "C" {
#endif

#if defined(_WIN32) || defined(_WIN64)
#  define CSON_ENABLE_UNIX 0
#else
#  define CSON_ENABLE_UNIX 1
#endif


/** @typedef some_long_int_type cson_int_t

Typedef for JSON-like integer types. This is (long long) where feasible,
otherwise (long).
*/
#ifdef _WIN32
typedef __int64 cson_int_t;
#define CSON_INT_T_SFMT "I64d"
#define CSON_INT_T_PFMT "I64d"
#elif (__STDC_VERSION__ >= 199901L) || (HAVE_LONG_LONG == 1)
typedef long long cson_int_t;
#define CSON_INT_T_SFMT "lld"
#define CSON_INT_T_PFMT "lld"
#else 
typedef long cson_int_t;
#define CSON_INT_T_SFMT "ld"
#define CSON_INT_T_PFMT "ld"
#endif

/** @typedef double_or_long_double cson_double_t

    This is the type of double value used by the library.
    It is only lightly tested with long double, and when using
    long double the memory requirements for such values goes
    up.

    Note that by default cson uses C-API defaults for numeric
    precision. To use a custom precision throughout the library, one
    needs to define the macros CSON_DOUBLE_T_SFMT and/or
    CSON_DOUBLE_T_PFMT macros to include their desired precision, and
    must build BOTH cson AND the client using these same values. For
    example:

    @code
    #define CSON_DOUBLE_T_PFMT ".8Lf" // for Modified Julian Day values
    #define HAVE_LONG_DOUBLE
    @endcode

    (Only CSON_DOUBLE_T_PFTM should be needed for most
    purposes.)
*/

#if defined(HAVE_LONG_DOUBLE)
   typedef long double cson_double_t;
#  ifndef CSON_DOUBLE_T_SFMT
#    define CSON_DOUBLE_T_SFMT "Lf"
#  endif
#  ifndef CSON_DOUBLE_T_PFMT
#    define CSON_DOUBLE_T_PFMT "Lf"
#  endif
#else
   typedef double cson_double_t;
#  ifndef CSON_DOUBLE_T_SFMT
#    define CSON_DOUBLE_T_SFMT "f"
#  endif
#  ifndef CSON_DOUBLE_T_PFMT
#    define CSON_DOUBLE_T_PFMT "f"
#  endif
#endif

/** @def CSON_VOID_PTR_IS_BIG

ONLY define this to a true value if you know that

(sizeof(cson_int_t) <= sizeof(void*))

If that is the case, cson does not need to dynamically
allocate integers. However, enabling this may cause
compilation warnings in 32-bit builds even though the code
being warned about cannot ever be called. To get around such
warnings, when building on a 64-bit environment you can define
this to 1 to get "big" integer support. HOWEVER, all clients must
also use the same value for this macro. If i knew a halfway reliable
way to determine this automatically at preprocessor-time, i would
automate this. We might be able to do halfway reliably by looking
for a large INT_MAX value?
*/
#if !defined(CSON_VOID_PTR_IS_BIG)

/* Largely taken from http://predef.sourceforge.net/prearch.html

See also: http://poshlib.hookatooka.com/poshlib/trac.cgi/browser/posh.h
*/
#  if defined(_WIN64) || defined(__LP64__)/*gcc*/ \
    || defined(_M_X64) || defined(__amd64__) || defined(__amd64) \
    ||  defined(__x86_64__) || defined(__x86_64) \
    || defined(__ia64__) || defined(__ia64) || defined(_IA64) || defined(__IA64__) \
    || defined(_M_IA64) \
    || defined(__sparc_v9__) || defined(__sparcv9) || defined(_ADDR64) \
    || defined(__64BIT__)
#    define CSON_VOID_PTR_IS_BIG 1
#  else
#    define CSON_VOID_PTR_IS_BIG 0
#  endif
#endif

/** @def CSON_INT_T_SFMT

scanf()-compatible format token for cson_int_t.
*/

/** @def CSON_INT_T_PFMT

printf()-compatible format token for cson_int_t.
*/


/** @def CSON_DOUBLE_T_SFMT

scanf()-compatible format token for cson_double_t.
*/

/** @def CSON_DOUBLE_T_PFMT

printf()-compatible format token for cson_double_t.
*/

/**
    Type IDs corresponding to JavaScript/JSON types.

    These are only in the public API to allow O(1) client-side
    dispatching based on cson_value types.
*/
enum cson_type_id {
  /**
    The special "undefined" value constant.

    Its value must be 0 for internal reasons.
 */
 CSON_TYPE_UNDEF = 0,
 /**
    The special "null" value constant.
 */
 CSON_TYPE_NULL = 1,
 /**
    The bool value type.
 */
 CSON_TYPE_BOOL = 2,
 /**
    The integer value type, represented in this library
    by cson_int_t.
 */
 CSON_TYPE_INTEGER = 3,
 /**
    The double value type, represented in this library
    by cson_double_t.
 */
 CSON_TYPE_DOUBLE = 4,
 /** The immutable string type. This library stores strings
    as immutable UTF8.
 */
 CSON_TYPE_STRING = 5,
 /** The "Array" type. */
 CSON_TYPE_ARRAY = 6,
 /** The "Object" type. */
 CSON_TYPE_OBJECT = 7
};
/**
   Convenience typedef.
*/
typedef enum cson_type_id cson_type_id;


/**
   Convenience typedef.
*/
typedef struct cson_value cson_value;

/** @struct cson_value
   
   The core value type of this API. It is opaque to clients, and
   only the cson public API should be used for setting or
   inspecting their values.

   This class is opaque because stack-based usage can easily cause
   leaks if one does not intimately understand the underlying
   internal memory management (which sometimes changes).

   It is (as of 20110323) legal to insert a given value instance into
   multiple containers (they will share ownership using reference
   counting) as long as those insertions do not cause cycles. However,
   be very aware that such value re-use uses a reference to the
   original copy, meaning that if its value is changed once, it is
   changed everywhere. Also beware that multi-threaded write
   operations on such references leads to undefined behaviour.
   
   PLEASE read the ACHTUNGEN below...

   ACHTUNG #1:

   cson_values MUST NOT form cycles (e.g. via object or array
   entries).

   Not abiding th Holy Law Of No Cycles will lead to double-frees and
   the like (i.e. undefined behaviour, likely crashes due to infinite
   recursion or stepping on invalid (freed) pointers).

   ACHTUNG #2:
   
   ALL cson_values returned as non-const cson_value pointers from any
   public functions in the cson API are to be treated as if they are
   heap-allocated, and MUST be freed by client by doing ONE of:
   
   - Passing it to cson_value_free().
   
   - Adding it to an Object or Array, in which case the object/array
   takes over ownership. As of 20110323, a value may be inserted into
   a single container multiple times, or into multiple containers,
   in which case they all share ownership (via reference counting)
   of the original value (meaning any changes to it are visible in
   all references to it).
   
   Each call to cson_value_new_xxx() MUST eventually be followed up
   by one of those options.
   
   Some cson_value_new_XXX() implementations do not actually allocate
   memory, but this is an internal implementation detail. Client code
   MUST NOT rely on this behaviour and MUST treat each object
   returned by such a function as if it was a freshly-allocated copy
   (even if their pointer addresses are the same).
   
   ACHTUNG #3:

   Note that ACHTUNG #2 tells us that we must always free (or transfer
   ownership of) all pointers returned bycson_value_new_xxx(), but
   that two calls to (e.g.) cson_value_new_bool(1) will (or might)
   return the same address. The client must not rely on the
   "non-allocation" policy of such special cases, and must pass each
   returned value to cson_value_free(), even if two of them have the
   same address.  Some special values (e.g. null, true, false, integer
   0, double 0.0, and empty strings) use shared copies and in other
   places reference counting is used internally to figure out when it
   is safe to destroy an object.


   @see cson_value_new_array()
   @see cson_value_new_object()
   @see cson_value_new_string()
   @see cson_value_new_integer()
   @see cson_value_new_double()
   @see cson_value_new_bool()
   @see cson_value_true()
   @see cson_value_false()
   @see cson_value_null()
   @see cson_value_free()
   @see cson_value_type_id()
*/

/** @var cson_rc

   Deprecated: clients are encouraged to use the CSON_RC_xxx values
   which correspond to cson_rc.xxx, as those are more efficient.  Some
   docs and code may still refer to cson_rc, though.

   This object defines the error codes used by cson.

   Library routines which return int values almost always return a
   value from this structure. None of the members in this struct have
   published values except for the OK member, which has the value 0.
   All other values might be incidentally defined where clients
   can see them, but the numbers might change from release to
   release, so clients should only use the symbolic names.

   Client code is expected to access these values via the shared
   cson_rc object, and use them as demonstrated here:

   @code
   int rc = cson_some_func(...);
   if( 0 == rc ) {...success...}
   else if( cson_rc.ArgError == rc ) { ... some argument was wrong ... }
   else if( cson_rc.AllocError == rc ) { ... allocation error ... }
   ...
   @endcode

   Or with the preferred/newer method:

   @code
   int rc = cson_some_func(...);
   switch(rc){
     case 0: ...success...;
     case CSON_RC_ArgError: ... some argument was wrong ...
     case CSON_RC_AllocError: ... allocation error ...
     ...
   }
   @endcode
   
   The entries named Parse_XXX are generally only returned by
   cson_parse() and friends.

   @deprecated
*/

/**
   The CSON_RC_xxx values are intended to replace the older
   cson_rc.xxx values.
*/
enum cson_rc_values {
  /** The generic success value. Guaranteed to be 0. */
 CSON_RC_OK = 0,
 /** Signifies an error in one or more arguments (e.g. NULL where it is not allowed). */
 CSON_RC_ArgError,
 /** Signifies that some argument is not in a valid range. */
 CSON_RC_RangeError,
 /** Signifies that some argument is not of the correct logical cson type. */
 CSON_RC_TypeError,
 /** Signifies an input/ouput error. */
 CSON_RC_IOError,
 /** Signifies an out-of-memory error. */
 CSON_RC_AllocError,
 /** Signifies that the called code is "NYI" (Not Yet Implemented). */
 CSON_RC_NYIError,
 /** Signifies that an internal error was triggered. If it happens, please report this as a bug! */
 CSON_RC_InternalError,
 /** Signifies that the called operation is not supported in the
     current environment. e.g.  missing support from 3rd-party or
     platform-specific code.
 */
 CSON_RC_UnsupportedError,
 /**
    Signifies that the request resource could not be found.
 */
 CSON_RC_NotFoundError,
 /**
    Signifies an unknown error, possibly because an underlying
    3rd-party API produced an error and we have no other reasonable
    error code to convert it to.
 */
 CSON_RC_UnknownError,
 /**
    Signifies that the parser found an unexpected character.
 */
 CSON_RC_Parse_INVALID_CHAR,
 /**
    Signifies that the parser found an invalid keyword (possibly
    an unquoted string).
 */
 CSON_RC_Parse_INVALID_KEYWORD,
 /**
    Signifies that the parser found an invalid escape sequence.
 */
 CSON_RC_Parse_INVALID_ESCAPE_SEQUENCE,
 /**
    Signifies that the parser found an invalid Unicode character
    sequence.
 */
 CSON_RC_Parse_INVALID_UNICODE_SEQUENCE,
 /**
    Signifies that the parser found an invalid numeric token.
 */
 CSON_RC_Parse_INVALID_NUMBER,
 /**
    Signifies that the parser reached its maximum defined
    parsing depth before finishing the input.
 */
 CSON_RC_Parse_NESTING_DEPTH_REACHED,
 /**
    Signifies that the parser found an unclosed object or array.
 */
 CSON_RC_Parse_UNBALANCED_COLLECTION,
 /**
    Signifies that the parser found an key in an unexpected place.
 */
 CSON_RC_Parse_EXPECTED_KEY,
 /**
    Signifies that the parser expected to find a colon but
    found none (e.g. between keys and values in an object).
 */
 CSON_RC_Parse_EXPECTED_COLON
};

/** @struct cson_rc_
   See \ref cson_rc for details.
*/
static const struct cson_rc_
{
    /** The generic success value. Guaranteed to be 0. */
    const int OK;
    /** Signifies an error in one or more arguments (e.g. NULL where it is not allowed). */
    const int ArgError;
    /** Signifies that some argument is not in a valid range. */
    const int RangeError;
    /** Signifies that some argument is not of the correct logical cson type. */
    const int TypeError;
    /** Signifies an input/ouput error. */
    const int IOError;
    /** Signifies an out-of-memory error. */
    const int AllocError;
    /** Signifies that the called code is "NYI" (Not Yet Implemented). */
    const int NYIError;
    /** Signifies that an internal error was triggered. If it happens, please report this as a bug! */
    const int InternalError;
    /** Signifies that the called operation is not supported in the
        current environment. e.g.  missing support from 3rd-party or
        platform-specific code.
    */
    const int UnsupportedError;
    /**
       Signifies that the request resource could not be found.
     */
    const int NotFoundError;
    /**
       Signifies an unknown error, possibly because an underlying
       3rd-party API produced an error and we have no other reasonable
       error code to convert it to.
     */
    const int UnknownError;
    /**
       Signifies that the parser found an unexpected character.
     */
    const int Parse_INVALID_CHAR;
    /**
       Signifies that the parser found an invalid keyword (possibly
       an unquoted string).
     */
    const int Parse_INVALID_KEYWORD;
    /**
       Signifies that the parser found an invalid escape sequence.
     */
    const int Parse_INVALID_ESCAPE_SEQUENCE;
    /**
       Signifies that the parser found an invalid Unicode character
       sequence.
     */
    const int Parse_INVALID_UNICODE_SEQUENCE;
    /**
       Signifies that the parser found an invalid numeric token.
     */
    const int Parse_INVALID_NUMBER;
    /**
       Signifies that the parser reached its maximum defined
       parsing depth before finishing the input.
     */
    const int Parse_NESTING_DEPTH_REACHED;
    /**
       Signifies that the parser found an unclosed object or array.
     */
    const int Parse_UNBALANCED_COLLECTION;
    /**
       Signifies that the parser found an key in an unexpected place.
     */
    const int Parse_EXPECTED_KEY;
    /**
       Signifies that the parser expected to find a colon but
       found none (e.g. between keys and values in an object).
     */
    const int Parse_EXPECTED_COLON;
} cson_rc = {
    CSON_RC_OK,
    CSON_RC_ArgError,
    CSON_RC_RangeError,
    CSON_RC_TypeError,
    CSON_RC_IOError,
    CSON_RC_AllocError,
    CSON_RC_NYIError,
    CSON_RC_InternalError,
    CSON_RC_UnsupportedError,
    CSON_RC_NotFoundError,
    CSON_RC_UnknownError,
    CSON_RC_Parse_INVALID_CHAR,
    CSON_RC_Parse_INVALID_KEYWORD,
    CSON_RC_Parse_INVALID_ESCAPE_SEQUENCE,
    CSON_RC_Parse_INVALID_UNICODE_SEQUENCE,
    CSON_RC_Parse_INVALID_NUMBER,
    CSON_RC_Parse_NESTING_DEPTH_REACHED,
    CSON_RC_Parse_UNBALANCED_COLLECTION,
    CSON_RC_Parse_EXPECTED_KEY,
    CSON_RC_Parse_EXPECTED_COLON
};

/**
   Returns the string form of the cson_rc code corresponding to rc, or
   some unspecified, non-NULL string if it is an unknown code.

   The returned bytes are static and do not changing during the
   lifetime of the application.
*/
char const * cson_rc_string(int rc);

/** @struct cson_parse_opt
   Client-configurable options for the cson_parse() family of
   functions.
*/
struct cson_parse_opt
{
    /**
       Maximum object/array depth to traverse.
    */
    unsigned short maxDepth;
    /**
       Whether or not to allow C-style comments.  Do not rely on this
       option being available. If the underlying parser is replaced,
       this option might no longer be supported.
    */
    char allowComments;
};
typedef struct cson_parse_opt cson_parse_opt;

/**
   Empty-initialized cson_parse_opt object.
*/
#define cson_parse_opt_empty_m { 25/*maxDepth*/, 0/*allowComments*/}


/**
   A class for holding JSON parser information. It is primarily
   intended for finding the position of a parse error.
*/
struct cson_parse_info
{
    /**
       1-based line number.
    */
    unsigned int line;
    /**
       0-based column number.
     */
    unsigned int col;

    /**
       Length, in bytes.
    */
    unsigned int length;
    
    /**
       Error code of the parse run (0 for no error).
    */
    int errorCode;

    /**
       The total number of object keys successfully processed by the
       parser.
    */
    unsigned int totalKeyCount;

    /**
       The total number of object/array values successfully processed
       by the parser, including the root node.
     */
    unsigned int totalValueCount;
};
typedef struct cson_parse_info cson_parse_info;

/**
   Empty-initialized cson_parse_info object.
*/
#define cson_parse_info_empty_m {1/*line*/,\
            0/*col*/,                                   \
            0/*length*/,                                \
            0/*errorCode*/,                             \
            0/*totalKeyCount*/,                         \
            0/*totalValueCount*/                        \
            }
/**
   Empty-initialized cson_parse_info object.
*/
extern const cson_parse_info cson_parse_info_empty;

/**
   Empty-initialized cson_parse_opt object.
*/
extern const cson_parse_opt cson_parse_opt_empty;

/**
    Client-configurable options for the cson_output() family of
    functions.
*/
struct cson_output_opt
{
    /**
       Specifies how to indent (or not) output. The values
       are:

       (0) == no extra indentation.
       
       (1) == 1 TAB character for each level.

       (>1) == that number of SPACES for each level.
    */
    unsigned char indentation;

    /**
       Maximum object/array depth to traverse. Traversing deeply can
       be indicative of cycles in the object/array tree, and this
       value is used to figure out when to abort the traversal.
    */
    unsigned short maxDepth;
    
    /**
       If true, a newline will be added to generated output,
       else not.
    */
    char addNewline;

    /**
       If true, a space will be added after the colon operator
       in objects' key/value pairs.
    */
    char addSpaceAfterColon;

    /**
       If set to 1 then objects/arrays containing only a single value
       will not indent an extra level for that value (but will indent
       on subsequent levels if that value contains multiple values).
    */
    char indentSingleMemberValues;

    /**
       The JSON format allows, but does not require, JSON generators
       to backslash-escape forward slashes. This option enables/disables
       that feature. According to JSON's inventor, Douglas Crockford:

       <quote>
       It is allowed, not required. It is allowed so that JSON can be
       safely embedded in HTML, which can freak out when seeing
       strings containing "</". JSON tolerates "<\/" for this reason.
       </quote>

       (from an email on 2011-04-08)

       The default value is 0 (because it's just damned ugly).
    */
    char escapeForwardSlashes;
};
typedef struct cson_output_opt cson_output_opt;

/**
   Empty-initialized cson_output_opt object.
*/
#define cson_output_opt_empty_m { 0/*indentation*/,\
            25/*maxDepth*/,                             \
            0/*addNewline*/,                            \
            0/*addSpaceAfterColon*/,                    \
            0/*indentSingleMemberValues*/,              \
            0/*escapeForwardSlashes*/                   \
            }

/**
   Empty-initialized cson_output_opt object.
*/
extern const cson_output_opt cson_output_opt_empty;

/**
   Typedef for functions which act as an input source for
   the cson JSON parser.

   The arguments are:

   - state: implementation-specific state needed by the function.

   - n: when called, *n will be the number of bytes the function
   should read and copy to dest. The function MUST NOT copy more than
   *n bytes to dest. Before returning, *n must be set to the number of
   bytes actually copied to dest. If that number is smaller than the
   original *n value, the input is assumed to be completed (thus this
   is not useful with non-blocking readers).

   - dest: the destination memory to copy the data do.

   Must return 0 on success, non-0 on error (preferably a value from
   cson_rc).

   The parser allows this routine to return a partial character from a
   UTF multi-byte character. The input routine does not need to
   concern itself with character boundaries.
*/
typedef int (*cson_data_source_f)( void * state, void * dest, unsigned int * n );

/**
   Typedef for functions which act as an output destination for
   generated JSON.

   The arguments are:

   - state: implementation-specific state needed by the function.

   - n: the length, in bytes, of src.

   - src: the source bytes which the output function should consume.
   The src pointer will be invalidated shortly after this function
   returns, so the implementation must copy or ignore the data, but not
   hold a copy of the src pointer.

   Must return 0 on success, non-0 on error (preferably a value from
   cson_rc).

   These functions are called relatively often during the JSON-output
   process, and should try to be fast.   
*/
typedef int (*cson_data_dest_f)( void * state, void const * src, unsigned int n );

/**
    Reads JSON-formatted string data (in ASCII, UTF8, or UTF16), using the
    src function to fetch all input. This function fetches each input character
    from the source function, which is calls like src(srcState, buffer, bufferSize),
    and processes them. If anything is not JSON-kosher then this function
    fails and returns one of the non-0 cson_rc codes.

    This function is only intended to read root nodes of a JSON tree, either
    a single object or a single array, containing any number of child elements.

    On success, *tgt is assigned the value of the root node of the
    JSON input, and the caller takes over ownership of that memory.
    On error, *tgt is not modified and the caller need not do any
    special cleanup, except possibly for the input source.


    The opt argument may point to an initialized cson_parse_opt object
    which contains any settings the caller wants. If it is NULL then
    default settings (the values defined in cson_parse_opt_empty) are
    used.

    The info argument may be NULL. If it is not NULL then the parser
    populates it with information which is useful in error
    reporting. Namely, it contains the line/column of parse errors.
    
    The srcState argument is ignored by this function but is passed on to src,
    so any output-destination-specific state can be stored there and accessed
    via the src callback.
    
    Non-parse error conditions include:

    - (!tgt) or !src: CSON_RC_ArgError
    - CSON_RC_AllocError can happen at any time during the input phase

    Here's a complete example of using a custom input source:

    @code
    // Internal type to hold state for a JSON input string.
    typedef struct
    {
        char const * str; // start of input string
        char const * pos; // current internal cursor position
        char const * end; // logical EOF (one-past-the-end)
    } StringSource;

    // cson_data_source_f() impl which uses StringSource.
    static int cson_data_source_StringSource( void * state, void * dest,
                                              unsigned int * n )
    {
        StringSource * ss = (StringSource*) state;
        unsigned int i;
        unsigned char * tgt = (unsigned char *)dest;
        if( ! ss || ! n || !dest ) return CSON_RC_ArgError;
        else if( !*n ) return CSON_RC_RangeError;
        for( i = 0;
             (i < *n) && (ss->pos < ss->end);
             ++i, ++ss->pos, ++tgt )
        {
             *tgt = *ss->pos;
        }
        *n = i;
        return 0;
    }

    ...
    // Now use StringSource together with cson_parse()
    StringSource ss;
    cson_value * root = NULL;
    char const * json = "{\"k1\":123}";
    ss.str = ss.pos = json;
    ss.end = json + strlen(json);
    int rc = cson_parse( &root, cson_data_source_StringSource, &ss, NULL, NULL );
    @endcode

    It is recommended that clients wrap such utility code into
    type-safe wrapper functions which also initialize the internal
    state object and check the user-provided parameters for legality
    before passing them on to cson_parse(). For examples of this, see
    cson_parse_FILE() or cson_parse_string().

    TODOs:

    - Buffer the input in larger chunks. We currently read
    byte-by-byte, but i'm too tired to write/test the looping code for
    the buffering.
    
    @see cson_parse_FILE()
    @see cson_parse_string()
*/
int cson_parse( cson_value ** tgt, cson_data_source_f src, void * srcState,
                cson_parse_opt const * opt, cson_parse_info * info );
/**
   A cson_data_source_f() implementation which requires the state argument
   to be a readable (FILE*) handle.
*/
int cson_data_source_FILE( void * state, void * dest, unsigned int * n );

/**
   Equivalent to cson_parse( tgt, cson_data_source_FILE, src, opt ).

   @see cson_parse_filename()
*/
int cson_parse_FILE( cson_value ** tgt, FILE * src,
                     cson_parse_opt const * opt, cson_parse_info * info );

/**
   Convenience wrapper around cson_parse_FILE() which opens the given filename.

   Returns CSON_RC_IOError if the file cannot be opened.

   @see cson_parse_FILE()
*/
int cson_parse_filename( cson_value ** tgt, char const * src,
                         cson_parse_opt const * opt, cson_parse_info * info );

/**
   Uses an internal helper class to pass src through cson_parse().
   See that function for the return value and argument semantics.

   src must be a string containing JSON code, at least len bytes long,
   and the parser will attempt to parse exactly len bytes from src.

   If len is less than 2 (the minimum length of a legal top-node JSON
   object) then CSON_RC_RangeError is returned.
*/
int cson_parse_string( cson_value ** tgt, char const * src, unsigned int len,
                       cson_parse_opt const * opt, cson_parse_info * info );



/**
   Outputs the given value as a JSON-formatted string, sending all
   output to the given callback function. It is intended for top-level
   objects or arrays, but can be used with any cson_value.

   If opt is NULL then default options (the values defined in
   cson_output_opt_empty) are used.

   If opt->maxDepth is exceeded while traversing the value tree,
   CSON_RC_RangeError is returned.

   The destState parameter is ignored by this function and is passed
   on to the dest function.

   Returns 0 on success. On error, any amount of output might have been
   generated before the error was triggered.
   
   Example:

   @code
   int rc = cson_output( myValue, cson_data_dest_FILE, stdout, NULL );
   // basically equivalent to: cson_output_FILE( myValue, stdout, NULL );
   // but note that cson_output_FILE() actually uses different defaults
   // for the output options.
   @endcode
*/
int cson_output( cson_value const * src, cson_data_dest_f dest, void * destState, cson_output_opt const * opt );


/**
   A cson_data_dest_f() implementation which requires the state argument
   to be a writable (FILE*) handle.
*/
int cson_data_dest_FILE( void * state, void const * src, unsigned int n );

/**
   Almost equivalent to cson_output( src, cson_data_dest_FILE, dest, opt ),
   with one minor difference: if opt is NULL then the default options
   always include the addNewline option, since that is normally desired
   for FILE output.

   @see cson_output_filename()
*/
int cson_output_FILE( cson_value const * src, FILE * dest, cson_output_opt const * opt );
/**
   Convenience wrapper around cson_output_FILE() which writes to the given filename, destroying
   any existing contents. Returns CSON_RC_IOError if the file cannot be opened.

   @see cson_output_FILE()
*/
int cson_output_filename( cson_value const * src, char const * dest, cson_output_opt const * fmt );

/**
   Returns the virtual type of v, or CSON_TYPE_UNDEF if !v.
*/
cson_type_id cson_value_type_id( cson_value const * v );


/** Returns true if v is null, v->api is NULL, or v holds the special undefined value. */
char cson_value_is_undef( cson_value const * v );
/** Returns true if v contains a null value. */
char cson_value_is_null( cson_value const * v );
/** Returns true if v contains a bool value. */
char cson_value_is_bool( cson_value const * v );
/** Returns true if v contains an integer value. */
char cson_value_is_integer( cson_value const * v );
/** Returns true if v contains a double value. */
char cson_value_is_double( cson_value const * v );
/** Returns true if v contains a number (double, integer) value. */
char cson_value_is_number( cson_value const * v );
/** Returns true if v contains a string value. */
char cson_value_is_string( cson_value const * v );
/** Returns true if v contains an array value. */
char cson_value_is_array( cson_value const * v );
/** Returns true if v contains an object value. */
char cson_value_is_object( cson_value const * v );

/** @struct cson_object

    cson_object is an opaque handle to an Object value.

    They are used like:

    @code
    cson_object * obj = cson_value_get_object(myValue);
    ...
    @endcode

    They can be created like:

    @code
    cson_value * objV = cson_value_new_object();
    cson_object * obj = cson_value_get_object(objV);
    // obj is owned by objV and objV must eventually be freed
    // using cson_value_free() or added to a container
    // object/array (which transfers ownership to that container).
    @endcode

    @see cson_value_new_object()
    @see cson_value_get_object()
    @see cson_value_free()
*/

typedef struct cson_object cson_object;

/** @struct cson_array

    cson_array is an opaque handle to an Array value.

    They are used like:

    @code
    cson_array * obj = cson_value_get_array(myValue);
    ...
    @endcode

    They can be created like:

    @code
    cson_value * arV = cson_value_new_array();
    cson_array * ar = cson_value_get_array(arV);
    // ar is owned by arV and arV must eventually be freed
    // using cson_value_free() or added to a container
    // object/array (which transfers ownership to that container).
    @endcode

    @see cson_value_new_array()
    @see cson_value_get_array()
    @see cson_value_free()

*/
typedef struct cson_array cson_array;

/** @struct cson_string

   cson-internal string type, opaque to client code. Strings in cson
   are immutable and allocated only by library internals, never
   directly by client code.

   The actual string bytes are to be allocated together in the same
   memory chunk as the cson_string object, which saves us 1 malloc()
   and 1 pointer member in this type (because we no longer have a
   direct pointer to the memory).

   Potential TODOs:

   @see cson_string_cstr()
*/
typedef struct cson_string cson_string;

/**
   Converts the given value to a boolean, using JavaScript semantics depending
   on the concrete type of val:

   undef or null: false
   
   boolean: same
   
   integer, double: 0 or 0.0 == false, else true
   
   object, array: true

   string: length-0 string is false, else true.

   Returns 0 on success and assigns *v (if v is not NULL) to either 0 or 1.
   On error (val is NULL) then v is not modified.
*/
int cson_value_fetch_bool( cson_value const * val, char * v );

/**
   Similar to cson_value_fetch_bool(), but fetches an integer value.

   The conversion, if any, depends on the concrete type of val:

   NULL, null, undefined: *v is set to 0 and 0 is returned.
   
   string, object, array: *v is set to 0 and
   CSON_RC_TypeError is returned. The error may normally be safely
   ignored, but it is provided for those wanted to know whether a direct
   conversion was possible.

   integer: *v is set to the int value and 0 is returned.
   
   double: *v is set to the value truncated to int and 0 is returned.
*/
int cson_value_fetch_integer( cson_value const * val, cson_int_t * v );

/**
   The same conversions and return values as
   cson_value_fetch_integer(), except that the roles of int/double are
   swapped.
*/
int cson_value_fetch_double( cson_value const * val, cson_double_t * v );

/**
   If cson_value_is_string(val) then this function assigns *str to the
   contents of the string. str may be NULL, in which case this function
   functions like cson_value_is_string() but returns 0 on success.

   Returns 0 if val is-a string, else non-0, in which case *str is not
   modified.

   The bytes are owned by the given value and may be invalidated in any of
   the following ways:

   - The value is cleaned up or freed.

   - An array or object containing the value peforms a re-allocation
   (it shrinks or grows).

   And thus the bytes should be consumed before any further operations
   on val or any container which holds it.

   Note that this routine does not convert non-String values to their
   string representations. (Adding that ability would add more
   overhead to every cson_value instance.)
*/
int cson_value_fetch_string( cson_value const * val, cson_string ** str );

/**
   If cson_value_is_object(val) then this function assigns *obj to the underlying
   object value and returns 0, otherwise non-0 is returned and *obj is not modified.

   obj may be NULL, in which case this function works like cson_value_is_object()
   but with inverse return value semantics (0==success) (and it's a few
   CPU cycles slower).

   The *obj pointer is owned by val, and will be invalidated when val
   is cleaned up.

   Achtung: for best results, ALWAYS pass a pointer to NULL as the
   second argument, e.g.:

   @code
   cson_object * obj = NULL;
   int rc = cson_value_fetch_object( val, &obj );

   // Or, more simply:
   obj = cson_value_get_object( val );
   @endcode

   @see cson_value_get_object()
*/
int cson_value_fetch_object( cson_value const * val, cson_object ** obj );

/**
   Identical to cson_value_fetch_object(), but works on array values.

   @see cson_value_get_array()
*/
int cson_value_fetch_array( cson_value const * val, cson_array ** tgt );

/**
   Simplified form of cson_value_fetch_bool(). Returns 0 if val
   is NULL.
*/
char cson_value_get_bool( cson_value const * val );

/**
   Simplified form of cson_value_fetch_integer(). Returns 0 if val
   is NULL.
*/
cson_int_t cson_value_get_integer( cson_value const * val );

/**
   Simplified form of cson_value_fetch_double(). Returns 0.0 if val
   is NULL.
*/
cson_double_t cson_value_get_double( cson_value const * val );

/**
   Simplified form of cson_value_fetch_string(). Returns NULL if val
   is-not-a string value.
*/
cson_string * cson_value_get_string( cson_value const * val );

/**
   Returns a pointer to the NULL-terminated string bytes of str.
   The bytes are owned by string and will be invalided when it
   is cleaned up.

   If str is NULL then NULL is returned. If the string has a length
   of 0 then "" is returned.

   @see cson_string_length_bytes()
   @see cson_value_get_string()
*/
char const * cson_string_cstr( cson_string const * str );

/**
   Convenience function which returns the string bytes of
   the given value if it is-a string, otherwise it returns
   NULL. Note that this does no conversion of non-string types
   to strings.

   Equivalent to cson_string_cstr(cson_value_get_string(val)).
*/
char const * cson_value_get_cstr( cson_value const * val );

/**
   Equivalent to cson_string_cmp_cstr_n(lhs, cson_string_cstr(rhs), cson_string_length_bytes(rhs)).
*/
int cson_string_cmp( cson_string const * lhs, cson_string const * rhs );

/**
   Compares lhs to rhs using memcmp()/strcmp() semantics. Generically
   speaking it returns a negative number if lhs is less-than rhs, 0 if
   they are equivalent, or a positive number if lhs is greater-than
   rhs. It has the following rules for equivalence:

   - The maximum number of bytes compared is the lesser of rhsLen and
   the length of lhs. If the strings do not match, but compare equal
   up to the just-described comparison length, the shorter string is
   considered to be less-than the longer one.
   
   - If lhs and rhs are both NULL, or both have a length of 0 then they will
   compare equal.

   - If lhs is null/length-0 but rhs is not then lhs is considered to be less-than
   rhs.

   - If rhs is null/length-0 but lhs is not then rhs is considered to be less-than
   rhs.

   - i have no clue if the results are exactly correct for UTF strings.

*/
int cson_string_cmp_cstr_n( cson_string const * lhs, char const * rhs, unsigned int rhsLen );

/**
   Equivalent to cson_string_cmp_cstr_n( lhs, rhs, (rhs&&*rhs)?strlen(rhs):0 ).
*/
int cson_string_cmp_cstr( cson_string const * lhs, char const * rhs );

/**
   Returns the length, in bytes, of str, or 0 if str is NULL. This is
   an O(1) operation.

   TODO: add cson_string_length_chars() (is O(N) unless we add another
   member to store the char length).
   
   @see cson_string_cstr()
*/
unsigned int cson_string_length_bytes( cson_string const * str );

/**
    Returns the number of UTF8 characters in str. This value will
    be at most as long as cson_string_length_bytes() for the
    same string, and less if it has multi-byte characters.

    Returns 0 if str is NULL.
*/
unsigned int cson_string_length_utf8( cson_string const * str );

/**
   Like cson_value_get_string(), but returns a copy of the underying
   string bytes, which the caller owns and must eventually free
   using free().
*/
char * cson_value_get_string_copy( cson_value const * val );

/**
   Simplified form of cson_value_fetch_object(). Returns NULL if val
   is-not-a object value.
*/
cson_object * cson_value_get_object( cson_value const * val );

/**
   Simplified form of cson_value_fetch_array(). Returns NULL if val
   is-not-a array value.
*/
cson_array * cson_value_get_array( cson_value const * val );

/**
   Const-correct form of cson_value_get_array().
*/
cson_array const * cson_value_get_array_c( cson_value const * val );

/**
   If ar is-a array and is at least (pos+1) entries long then *v (if v is not NULL)
   is assigned to the value at that position (which may be NULL).

   Ownership of the *v return value is unchanged by this call. (The
   containing array may share ownership of the value with other
   containers.)

   If pos is out of range, non-0 is returned and *v is not modified.

   If v is NULL then this function returns 0 if pos is in bounds, but does not
   otherwise return a value to the caller.
*/
int cson_array_value_fetch( cson_array const * ar, unsigned int pos, cson_value ** v );

/**
   Simplified form of cson_array_value_fetch() which returns NULL if
   ar is NULL, pos is out of bounds or if ar has no element at that
   position.
*/
cson_value * cson_array_get( cson_array const * ar, unsigned int pos );

/**
   Ensures that ar has allocated space for at least the given
   number of entries. This never shrinks the array and never
   changes its logical size, but may pre-allocate space in the
   array for storing new (as-yet-unassigned) values.

   Returns 0 on success, or non-zero on error:

   - If ar is NULL: CSON_RC_ArgError

   - If allocation fails: CSON_RC_AllocError
*/
int cson_array_reserve( cson_array * ar, unsigned int size );

/**
   If ar is not NULL, sets *v (if v is not NULL) to the length of the array
   and returns 0. Returns CSON_RC_ArgError if ar is NULL.
*/
int cson_array_length_fetch( cson_array const * ar, unsigned int * v );

/**
   Simplified form of cson_array_length_fetch() which returns 0 if ar
   is NULL.
*/
unsigned int cson_array_length_get( cson_array const * ar );

/**
   Sets the given index of the given array to the given value.

   If ar already has an item at that index then it is cleaned up and
   freed before inserting the new item.

   ar is expanded, if needed, to be able to hold at least (ndx+1)
   items, and any new entries created by that expansion are empty
   (NULL values).

   On success, 0 is returned and ownership of v is transfered to ar.
  
   On error ownership of v is NOT modified, and the caller may still
   need to clean it up. For example, the following code will introduce
   a leak if this function fails:

   @code
   cson_array_append( myArray, cson_value_new_integer(42) );
   @endcode

   Because the value created by cson_value_new_integer() has no owner
   and is not cleaned up. The "more correct" way to do this is:

   @code
   cson_value * v = cson_value_new_integer(42);
   int rc = cson_array_append( myArray, v );
   if( 0 != rc ) {
      cson_value_free( v );
      ... handle error ...
   }
   @endcode

*/
int cson_array_set( cson_array * ar, unsigned int ndx, cson_value * v );

/**
   Appends the given value to the given array, transfering ownership of
   v to ar. On error, ownership of v is not modified. Ownership of ar
   is never changed by this function.

   This is functionally equivalent to
   cson_array_set(ar,cson_array_length_get(ar),v), but this
   implementation has slightly different array-preallocation policy
   (it grows more eagerly).
   
   Returns 0 on success, non-zero on error. Error cases include:

   - ar or v are NULL: CSON_RC_ArgError

   - Array cannot be expanded to hold enough elements: CSON_RC_AllocError.

   - Appending would cause a numeric overlow in the array's size:
   CSON_RC_RangeError.  (However, you'll get an AllocError long before
   that happens!)

   On error ownership of v is NOT modified, and the caller may still
   need to clean it up. See cson_array_set() for the details.

*/
int cson_array_append( cson_array * ar, cson_value * v );


/**
   Creates a new cson_value from the given boolean value.

   Ownership of the new value is passed to the caller, who must
   eventually either free the value using cson_value_free() or
   inserting it into a container (array or object), which transfers
   ownership to the container. See the cson_value class documentation
   for more details.

   Semantically speaking this function Returns NULL on allocation
   error, but the implementation never actually allocates for this
   case. Nonetheless, it must be treated as if it were an allocated
   value.
*/
cson_value * cson_value_new_bool( char v );


/**
   Alias for cson_value_new_bool(v).
*/
cson_value * cson_new_bool(char v);

/**
   Returns the special JSON "null" value. When outputing JSON,
   its string representation is "null" (without the quotes).
   
   See cson_value_new_bool() for notes regarding the returned
   value's memory.
*/
cson_value * cson_value_null( void );

/**
   Equivalent to cson_value_new_bool(1).
*/
cson_value * cson_value_true( void );

/**
   Equivalent to cson_value_new_bool(0).
*/
cson_value * cson_value_false( void );

/**
   Semantically the same as cson_value_new_bool(), but for integers.
*/
cson_value * cson_value_new_integer( cson_int_t v );

/**
   Alias for cson_value_new_integer(v).
*/
cson_value * cson_new_int(cson_int_t v);

/**
   Semantically the same as cson_value_new_bool(), but for doubles.
*/
cson_value * cson_value_new_double( cson_double_t v );

/**
   Alias for cson_value_new_double(v).
*/
cson_value * cson_new_double(cson_double_t v);

/**
   Semantically the same as cson_value_new_bool(), but for strings.
   This creates a JSON value which copies the first n bytes of str.
   The string will automatically be NUL-terminated.
   
   Note that if str is NULL or n is 0, this function still
   returns non-NULL value representing that empty string.
   
   Returns NULL on allocation error.
   
   See cson_value_new_bool() for important information about the
   returned memory.
*/
cson_value * cson_value_new_string( char const * str, unsigned int n );

/**
   Allocates a new "object" value and transfers ownership of it to the
   caller. It must eventually be destroyed, by the caller or its
   owning container, by passing it to cson_value_free().

   Returns NULL on allocation error.

   Post-conditions: cson_value_is_object(value) will return true.

   @see cson_value_new_array()
   @see cson_value_free()
*/
cson_value * cson_value_new_object( void );

/**
   This works like cson_value_new_object() but returns an Object
   handle directly.

   The value handle for the returned object can be fetched with
   cson_object_value(theObject).
   
   Ownership is transfered to the caller, who must eventually free it
   by passing the Value handle (NOT the Object handle) to
   cson_value_free() or passing ownership to a parent container.

   Returns NULL on error (out of memory).
*/
cson_object * cson_new_object( void );

/**
   Identical to cson_new_object() except that it creates
   an Array.
*/
cson_array * cson_new_array( void );

/**
   Identical to cson_new_object() except that it creates
   a String.
*/
cson_string * cson_new_string(char const * val, unsigned int len);

/**
   Equivalent to cson_value_free(cson_object_value(x)).
*/
void cson_free_object(cson_object *x);

/**
   Equivalent to cson_value_free(cson_array_value(x)).
*/
void cson_free_array(cson_array *x);

/**
   Equivalent to cson_value_free(cson_string_value(x)).
*/
void cson_free_string(cson_string *x);


/**
   Allocates a new "array" value and transfers ownership of it to the
   caller. It must eventually be destroyed, by the caller or its
   owning container, by passing it to cson_value_free().

   Returns NULL on allocation error.

   Post-conditions: cson_value_is_array(value) will return true.

   @see cson_value_new_object()
   @see cson_value_free()
*/
cson_value * cson_value_new_array( void );

/**
   Frees any resources owned by v, then frees v. If v is a container
   type (object or array) its children are also freed (recursively).

   If v is NULL, this is a no-op.

   This function decrements a reference count and only destroys the
   value if its reference count drops to 0. Reference counts are
   increased by either inserting the value into a container or via
   cson_value_add_reference(). Even if this function does not
   immediately destroy the value, the value must be considered, from
   the perspective of that client code, to have been
   destroyed/invalidated by this call.

   
   @see cson_value_new_object()
   @see cson_value_new_array()
   @see cson_value_add_reference()
*/
void cson_value_free(cson_value * v);

/**
   Alias for cson_value_free().
*/
void cson_free_value(cson_value * v);


/**
   Functionally similar to cson_array_set(), but uses a string key
   as an index. Like arrays, if a value already exists for the given key,
   it is destroyed by this function before inserting the new value.

   If v is NULL then this call is equivalent to
   cson_object_unset(obj,key). Note that (v==NULL) is treated
   differently from v having the special null value. In the latter
   case, the key is set to the special null value.

   The key may be encoded as ASCII or UTF8. Results are undefined
   with other encodings, and the errors won't show up here, but may
   show up later, e.g. during output.
   
   Returns 0 on success, non-0 on error. It has the following error
   cases:

   - CSON_RC_ArgError: obj or key are NULL or strlen(key) is 0.

   - CSON_RC_AllocError: an out-of-memory error

   On error ownership of v is NOT modified, and the caller may still
   need to clean it up. For example, the following code will introduce
   a leak if this function fails:

   @code
   cson_object_set( myObj, "foo", cson_value_new_integer(42) );
   @endcode

   Because the value created by cson_value_new_integer() has no owner
   and is not cleaned up. The "more correct" way to do this is:

   @code
   cson_value * v = cson_value_new_integer(42);
   int rc = cson_object_set( myObj, "foo", v );
   if( 0 != rc ) {
      cson_value_free( v );
      ... handle error ...
   }
   @endcode

   Potential TODOs:

   - Add an overload which takes a cson_value key instead. To get
   any value out of that we first need to be able to convert arbitrary
   value types to strings. We could simply to-JSON them and use those
   as keys.
*/
int cson_object_set( cson_object * obj, char const * key, cson_value * v );

/**
   Functionaly equivalent to cson_object_set(), but takes a
   cson_string() as its KEY type. The string will be reference-counted
   like any other values, and the key may legally be used within this
   same container (as a value) or others (as a key or value) at the
   same time.

   Returns 0 on success. On error, ownership (i.e. refcounts) of key
   and value are not modified. On success key and value will get
   increased refcounts unless they are replacing themselves (which is
   a harmless no-op).
*/
int cson_object_set_s( cson_object * obj, cson_string * key, cson_value * v );

/**
   Removes a property from an object.
   
   If obj contains the given key, it is removed and 0 is returned. If
   it is not found, CSON_RC_NotFoundError is returned (which can
   normally be ignored by client code).

   CSON_RC_ArgError is returned if obj or key are NULL or key has
   a length of 0.

   Returns 0 if the given key is found and removed.

   This is functionally equivalent calling
   cson_object_set(obj,key,NULL).
*/
int cson_object_unset( cson_object * obj, char const * key );

/**
   Searches the given object for a property with the given key. If found,
   it is returned. If no match is found, or any arguments are NULL, NULL is
   returned. The returned object is owned by obj, and may be invalidated
   by ANY operations which change obj's property list (i.e. add or remove
   properties).

   FIXME: allocate the key/value pairs like we do for cson_array,
   to get improve the lifetimes of fetched values.

   @see cson_object_fetch_sub()
   @see cson_object_get_sub()
*/
cson_value * cson_object_get( cson_object const * obj, char const * key );

/**
   Equivalent to cson_object_get() but takes a cson_string argument
   instead of a C-style string.
*/
cson_value * cson_object_get_s( cson_object const * obj, cson_string const *key );

/**
   Similar to cson_object_get(), but removes the value from the parent
   object's ownership. If no item is found then NULL is returned, else
   the object (now owned by the caller or possibly shared with other
   containers) is returned.

   Returns NULL if either obj or key are NULL or key has a length
   of 0.

   This function reduces the returned value's reference count but has
   the specific property that it does not treat refcounts 0 and 1
   identically, meaning that the returned object may have a refcount
   of 0. This behaviour works around a corner-case where we want to
   extract a child element from its parent and then destroy the parent
   (which leaves us in an undesireable (normally) reference count
   state).
*/
cson_value * cson_object_take( cson_object * obj, char const * key );

/**
    Fetches a property from a child (or [great-]*grand-child) object.

    obj is the object to search.

    path is a delimited string, where the delimiter is the given
    separator character.

    This function searches for the given path, starting at the given object
    and traversing its properties as the path specifies. If a given part of the
    path is not found, then this function fails with CSON_RC_NotFoundError.

    If it finds the given path, it returns the value by assiging *tgt
    to it.  If tgt is NULL then this function has no side-effects but
    will return 0 if the given path is found within the object, so it can be used
    to test for existence without fetching it.
    
    Returns 0 if it finds an entry, CSON_RC_NotFoundError if it finds
    no item, and any other non-zero error code on a "real" error. Errors include:

   - obj or path are NULL: CSON_RC_ArgError
    
    - separator is 0, or path is an empty string or contains only
    separator characters: CSON_RC_RangeError

    - There is an upper limit on how long a single path component may
    be (some "reasonable" internal size), and CSON_RC_RangeError is
    returned if that length is violated.

    
    Limitations:

    - It has no way to fetch data from arrays this way. i could
    imagine, e.g., a path of "subobj.subArray.0" for
    subobj.subArray[0], or "0.3.1" for [0][3][1]. But i'm too
    lazy/tired to add this.

    Example usage:
    

    Assume we have a JSON structure which abstractly looks like:

    @code
    {"subobj":{"subsubobj":{"myValue":[1,2,3]}}}
    @endcode

    Out goal is to get the value of myValue. We can do that with:

    @code
    cson_value * v = NULL;
    int rc = cson_object_fetch_sub( object, &v, "subobj.subsubobj.myValue", '.' );
    @endcode

    Note that because keys in JSON may legally contain a '.', the
    separator must be specified by the caller. e.g. the path
    "subobj/subsubobj/myValue" with separator='/' is equivalent the
    path "subobj.subsubobj.myValue" with separator='.'. The value of 0
    is not legal as a separator character because we cannot
    distinguish that use from the real end-of-string without requiring
    the caller to also pass in the length of the string.
   
    Multiple successive separators in the list are collapsed into a
    single separator for parsing purposes. e.g. the path "a...b...c"
    (separator='.') is equivalent to "a.b.c".

    @see cson_object_get_sub()
    @see cson_object_get_sub2()
*/
int cson_object_fetch_sub( cson_object const * obj, cson_value ** tgt, char const * path, char separator );

/**
   Similar to cson_object_fetch_sub(), but derives the path separator
   character from the first byte of the path argument. e.g. the
   following arg equivalent:

   @code
   cson_object_fetch_sub( obj, &tgt, "foo.bar.baz", '.' );
   cson_object_fetch_sub2( obj, &tgt, ".foo.bar.baz" );
   @endcode
*/
int cson_object_fetch_sub2( cson_object const * obj, cson_value ** tgt, char const * path );

/**
   Convenience form of cson_object_fetch_sub() which returns NULL if the given
   item is not found.
*/
cson_value * cson_object_get_sub( cson_object const * obj, char const * path, char sep );

/**
   Convenience form of cson_object_fetch_sub2() which returns NULL if the given
   item is not found.
*/
cson_value * cson_object_get_sub2( cson_object const * obj, char const * path );

/** @enum CSON_MERGE_FLAGS

    Flags for cson_object_merge().
*/
enum CSON_MERGE_FLAGS {
    CSON_MERGE_DEFAULT = 0,
    CSON_MERGE_REPLACE = 0x01,
    CSON_MERGE_NO_RECURSE = 0x02
};

/**
   "Merges" the src object's properties into dest. Each property in
   src is copied (using reference counting, not cloning) into dest. If
   dest already has the given property then behaviour depends on the
   flags argument:

   If flag has the CSON_MERGE_REPLACE bit set then this function will
   by default replace non-object properties with the src property. If
   src and dest both have the property AND it is an Object then this
   function operates recursively on those objects. If
   CSON_MERGE_NO_RECURSE is set then objects are not recursed in this
   manner, and will be completely replaced if CSON_MERGE_REPLACE is
   set.

   Array properties in dest are NOT recursed for merging - they are
   either replaced or left as-is, depending on whether flags contains
   he CSON_MERGE_REPLACE bit.

   Returns 0 on success. The error conditions are:

   - dest or src are NULL or (dest==src) returns CSON_RC_ArgError.

   - dest or src contain cyclic references - this will likely cause a
   crash due to endless recursion.

   Potential TODOs:

   - Add a flag to copy clones, not the original values.
*/
int cson_object_merge( cson_object * dest, cson_object const * src, int flags );


/**
   An iterator type for traversing object properties.

   Its values must be considered private, not to be touched by client
   code.

   @see cson_object_iter_init()
   @see cson_object_iter_next()
*/
struct cson_object_iterator
{
    
    /** @internal
        The underlying object.
    */
    cson_object const * obj;
    /** @internal
        Current position in the property list.
     */
    unsigned int pos;
};
typedef struct cson_object_iterator cson_object_iterator;

/**
   Empty-initialized cson_object_iterator object.
*/
#define cson_object_iterator_empty_m {NULL/*obj*/,0/*pos*/}

/**
   Empty-initialized cson_object_iterator object.
*/
extern const cson_object_iterator cson_object_iterator_empty;

/**
   Initializes the given iterator to point at the start of obj's
   properties. Returns 0 on success or CSON_RC_ArgError if !obj
   or !iter.

   obj must outlive iter, or results are undefined. Results are also
   undefined if obj is modified while the iterator is active.

   @see cson_object_iter_next()
*/
int cson_object_iter_init( cson_object const * obj, cson_object_iterator * iter );

/** @struct cson_kvp

This class represents a key/value pair and is used for storing
object properties. It is opaque to client code, and the public
API only uses this type for purposes of iterating over cson_object
properties using the cson_object_iterator interfaces.
*/

typedef struct cson_kvp cson_kvp;

/**
   Returns the next property from the given iterator's object, or NULL
   if the end of the property list as been reached.

   Note that the order of object properties is undefined by the API,
   and may change from version to version.

   The returned memory belongs to the underlying object and may be
   invalidated by any changes to that object.

   Example usage:

   @code
   cson_object_iterator it;
   cson_object_iter_init( myObject, &it ); // only fails if either arg is 0
   cson_kvp * kvp;
   cson_string const * key;
   cson_value const * val;
   while( (kvp = cson_object_iter_next(&it) ) )
   {
       key = cson_kvp_key(kvp);
       val = cson_kvp_value(kvp);
       ...
   }
   @endcode

   There is no need to clean up an iterator, as it holds no dynamic resources.
   
   @see cson_kvp_key()
   @see cson_kvp_value()
*/
cson_kvp * cson_object_iter_next( cson_object_iterator * iter );


/**
   Returns the key associated with the given key/value pair,
   or NULL if !kvp. The memory is owned by the object which contains
   the key/value pair, and may be invalidated by any modifications
   to that object.
*/
cson_string * cson_kvp_key( cson_kvp const * kvp );

/**
   Returns the value associated with the given key/value pair,
   or NULL if !kvp. The memory is owned by the object which contains
   the key/value pair, and may be invalidated by any modifications
   to that object.
*/
cson_value * cson_kvp_value( cson_kvp const * kvp );

/** @typedef some unsigned int type cson_size_t

*/
typedef unsigned int cson_size_t;

/**
   A generic buffer class.

   They can be used like this:

   @code
   cson_buffer b = cson_buffer_empty;
   int rc = cson_buffer_reserve( &buf, 100 );
   if( 0 != rc ) { ... allocation error ... }
   ... use buf.mem ...
   ... then free it up ...
   cson_buffer_reserve( &buf, 0 );
   @endcode

   To take over ownership of a buffer's memory:

   @code
   void * mem = b.mem;
   // mem is b.capacity bytes long, but only b.used
   // bytes of it has been "used" by the API.
   b = cson_buffer_empty;
   @endcode

   The memory now belongs to the caller and must eventually be
   free()d.
*/
struct cson_buffer
{
    /**
       The number of bytes allocated for this object.
       Use cson_buffer_reserve() to change its value.
     */
    cson_size_t capacity;
    /**
       The number of bytes "used" by this object. It is not needed for
       all use cases, and management of this value (if needed) is up
       to the client. The cson_buffer public API does not use this
       member. The intention is that this can be used to track the
       length of strings which are allocated via cson_buffer, since
       they need an explicit length and/or null terminator.
     */
    cson_size_t used;

    /**
       This is a debugging/metric-counting value
       intended to help certain malloc()-conscious
       clients tweak their memory reservation sizes.
       Each time cson_buffer_reserve() expands the
       buffer, it increments this value by 1.
    */
    cson_size_t timesExpanded;

    /**
       The memory allocated for and owned by this buffer.
       Use cson_buffer_reserve() to change its size or
       free it. To take over ownership, do:

       @code
       void * myptr = buf.mem;
       buf = cson_buffer_empty;
       @endcode

       (You might also need to store buf.used and buf.capacity,
       depending on what you want to do with the memory.)
       
       When doing so, the memory must eventually be passed to free()
       to deallocate it.
    */
    unsigned char * mem;
};
/** Convenience typedef. */
typedef struct cson_buffer cson_buffer;

/** An empty-initialized cson_buffer object. */
#define cson_buffer_empty_m {0/*capacity*/,0/*used*/,0/*timesExpanded*/,NULL/*mem*/}
/** An empty-initialized cson_buffer object. */
extern const cson_buffer cson_buffer_empty;

/**
   Uses cson_output() to append all JSON output to the given buffer
   object. The semantics for the (v, opt) parameters, and the return
   value, are as documented for cson_output(). buf must be a non-NULL
   pointer to a properly initialized buffer (see example below).

   Ownership of buf is not changed by calling this.

   On success 0 is returned and the contents of buf.mem are guaranteed
   to be NULL-terminated. On error the buffer might contain partial
   contents, and it should not be used except to free its contents.

   On error non-zero is returned. Errors include:

   - Invalid arguments: CSON_RC_ArgError

   - Buffer cannot be expanded (runs out of memory): CSON_RC_AllocError
   
   Example usage:

   @code
   cson_buffer buf = cson_buffer_empty;
   // optional: cson_buffer_reserve(&buf, 1024 * 10);
   int rc = cson_output_buffer( myValue, &buf, NULL );
   if( 0 != rc ) {
       ... error! ...
   }
   else {
       ... use buffer ...
       puts((char const*)buf.mem);
   }
   // In both cases, we eventually need to clean up the buffer:
   cson_buffer_reserve( &buf, 0 );
   // Or take over ownership of its memory:
   {
       char * mem = (char *)buf.mem;
       buf = cson_buffer_empty;
       ...
       free(mem);
   }
   @endcode
   
   @see cson_output()
   
*/
int cson_output_buffer( cson_value const * v, cson_buffer * buf,
                        cson_output_opt const * opt );

/**
   This works identically to cson_parse_string(), but takes a
   cson_buffer object as its input.  buf->used bytes of buf->mem are
   assumed to be valid JSON input, but it need not be NUL-terminated
   (we only read up to buf->used bytes). The value of buf->used is
   assumed to be the "string length" of buf->mem, i.e. not including
   the NUL terminator.

   Returns 0 on success, non-0 on error.

   See cson_parse() for the semantics of the tgt, opt, and err
   parameters.
*/
int cson_parse_buffer( cson_value ** tgt, cson_buffer const * buf,
                       cson_parse_opt const * opt, cson_parse_info * err );


/**
   Reserves the given amount of memory for the given buffer object.

   If n is 0 then buf->mem is freed and its state is set to
   NULL/0 values.

   If buf->capacity is less than or equal to n then 0 is returned and
   buf is not modified.

   If n is larger than buf->capacity then buf->mem is (re)allocated
   and buf->capacity contains the new length. Newly-allocated bytes
   are filled with zeroes.

   On success 0 is returned. On error non-0 is returned and buf is not
   modified.

   buf->mem is owned by buf and must eventually be freed by passing an
   n value of 0 to this function.

   buf->used is never modified by this function unless n is 0, in which case
   it is reset.
*/
int cson_buffer_reserve( cson_buffer * buf, cson_size_t n );

/**
   Fills all bytes of the given buffer with the given character.
   Returns the number of bytes set (buf->capacity), or 0 if
   !buf or buf has no memory allocated to it.
*/
cson_size_t cson_buffer_fill( cson_buffer * buf, char c );

/**
    Uses a cson_data_source_f() function to buffer input into a
    cson_buffer.

   dest must be a non-NULL, initialized (though possibly empty)
   cson_buffer object. Its contents, if any, will be overwritten by
   this function, and any memory it holds might be re-used.

   The src function is called, and passed the state parameter, to
   fetch the input. If it returns non-0, this function returns that
   error code. src() is called, possibly repeatedly, until it reports
   that there is no more data.

   Whether or not this function succeeds, dest still owns any memory
   pointed to by dest->mem, and the client must eventually free it by
   calling cson_buffer_reserve(dest,0).

   dest->mem might (and possibly will) be (re)allocated by this
   function, so any pointers to it held from before this call might be
   invalidated by this call.
   
   On error non-0 is returned and dest has almost certainly been
   modified but its state must be considered incomplete.

   Errors include:

   - dest or src are NULL (CSON_RC_ArgError)

   - Allocation error (CSON_RC_AllocError)

   - src() returns an error code

   Whether or not the state parameter may be NULL depends on
   the src implementation requirements.

   On success dest will contain the contents read from the input
   source. dest->used will be the length of the read-in data, and
   dest->mem will point to the memory. dest->mem is automatically
   NUL-terminated if this function succeeds, but dest->used does not
   count that terminator. On error the state of dest->mem must be
   considered incomplete, and is not guaranteed to be NUL-terminated.

    Example usage:

    @code
    cson_buffer buf = cson_buffer_empty;
    int rc = cson_buffer_fill_from( &buf,
                                    cson_data_source_FILE,
                                    stdin );
    if( rc )
    {
        fprintf(stderr,"Error %d (%s) while filling buffer.\n",
                rc, cson_rc_string(rc));
        cson_buffer_reserve( &buf, 0 );
        return ...;
    }
    ... use the buf->mem ...
    ... clean up the buffer ...
    cson_buffer_reserve( &buf, 0 );
    @endcode

    To take over ownership of the buffer's memory, do:

    @code
    void * mem = buf.mem;
    buf = cson_buffer_empty;
    @endcode

    In which case the memory must eventually be passed to free() to
    free it.    
*/
int cson_buffer_fill_from( cson_buffer * dest, cson_data_source_f src, void * state );


/**
   Increments the reference count for the given value. This is a
   low-level operation and should not normally be used by client code
   without understanding exactly what side-effects it introduces.
   Mis-use can lead to premature destruction or cause a value instance
   to never be properly destructed (i.e. a memory leak).

   This function is probably only useful for the following cases:

   - You want to hold a reference to a value which is itself contained
   in one or more containers, and you need to be sure that your
   reference outlives the container(s) and/or that you can free your
   copy of the reference without invaliding any references to the same
   value held in containers.

   - You want to implement "value sharing" behaviour without using an
   object or array to contain the shared value. This can be used to
   ensure the lifetime of the shared value instance. Each sharing
   point adds a reference and simply passed the value to
   cson_value_free() when they're done. The object will be kept alive
   for other sharing points which added a reference.

   Normally any such value handles would be invalidated when the
   parent container(s) is/are cleaned up, but this function can be
   used to effectively delay the cleanup.
   
   This function, at its lowest level, increments the value's
   reference count by 1.

   To decrement the reference count, pass the value to
   cson_value_free(), after which the value must be considered, from
   the perspective of that client code, to be destroyed (though it
   will not be if there are still other live references to
   it). cson_value_free() will not _actually_ destroy the value until
   its reference count drops to 0.

   Returns 0 on success. The only error conditions are if v is NULL
   (CSON_RC_ArgError) or if the reference increment would overflow
   (CSON_RC_RangeError). In theory a client would get allocation
   errors long before the reference count could overflow (assuming
   those reference counts come from container insertions, as opposed
   to via this function).

   Insider notes which clients really need to know:
   
   For shared/constant value instances, such as those returned by
   cson_value_true() and cson_value_null(), this function has no side
   effects - it does not actually modify the reference count because
   (A) those instances are shared across all client code and (B) those
   objects are static and never get cleaned up. However, that is an
   implementation detail which client code should not rely on. In
   other words, if you call cson_value_add_reference() 3 times using
   the value returned by cson_value_true() (which is incidentally a
   shared cson_value instance), you must eventually call
   cson_value_free() 3 times to (semantically) remove those
   references. However, internally the reference count for that
   specific cson_value instance will not be modified and those
   objects will never be freed (they're stack-allocated).

   It might be interesting to note that newly-created objects
   have a reference count of 0 instead of 1. This is partly because
   if the initial reference is counted then it makes ownership
   problematic when inserting values into containers. e.g. consider the
   following code:

   @code
   // ACHTUNG: this code is hypothetical and does not reflect
   // what actually happens!
   cson_value * v =
        cson_value_new_integer( 42 ); // v's refcount = 1
   cson_array_append( myArray, v ); // v's refcount = 2
   @endcode

   If that were the case, the client would be forced to free his own
   reference after inserting it into the container (which is a bit
   counter-intuitive as well as intrusive). It would look a bit like
   the following and would have to be done after every create/insert
   operation:

   @code
   // ACHTUNG: this code is hypothetical and does not reflect
   // what actually happens!
   cson_array_append( myArray, v ); // v's refcount = 2
   cson_value_free( v ); // v's refcount = 1
   @endcode

   (As i said: it's counter-intuitive and intrusive.)

   Instead, values start with a refcount of 0 and it is only increased
   when the value is added to an object/array container or when this
   function is used to manually increment it. cson_value_free() treats
   a refcount of 0 or 1 equivalently, destroying the value
   instance. The only semantic difference between 0 and 1, for
   purposes of cleaning up, is that a value with a non-0 refcount has
   been had its refcount adjusted, whereas a 0 refcount indicates a
   fresh, "unowned" reference.
*/
int cson_value_add_reference( cson_value * v );

#if 0
/**
   DO NOT use this unless you know EXACTLY what you're doing.
   It is only in the public API to work around a couple corner
   cases involving extracting child elements and discarding
   their parents.

   This function sets v's reference count to the given value.
   It does not clean up the object if rc is 0.

   Returns 0 on success, non-0 on error.
*/
int cson_value_refcount_set( cson_value * v, unsigned short rc );
#endif

/**
   Deeply copies a JSON value, be it an object/array or a "plain"
   value (e.g. number/string/boolean). If cv is not NULL then this
   function makes a deep clone of it and returns that clone. Ownership
   of the clone is identical t transfered to the caller, who must
   eventually free the value using cson_value_free() or add it to a
   container object/array to transfer ownership to the container. The
   returned object will be of the same logical type as orig.

   ACHTUNG: if orig contains any cyclic references at any depth level
   this function will endlessly recurse. (Having _any_ cyclic
   references violates this library's requirements.)
   
   Returns NULL if orig is NULL or if cloning fails. Assuming that
   orig is in a valid state, the only "likely" error case is that an
   allocation fails while constructing the clone. In other words, if
   cloning fails due to something other than an allocation error then
   either orig is in an invalid state or there is a bug.

   When this function clones Objects or Arrays it shares any immutable
   values (including object keys) between the parent and the
   clone. Mutable values (Objects and Arrays) are copied, however.
   For example, if we clone:

   @code
   { a: 1, b: 2, c:["hi"] }
   @endcode

   The cloned object and the array "c" would be a new Object/Array
   instances but the object keys (a,b,b) and the values of (a,b), as
   well as the string value within the "c" array, would be shared
   between the original and the clone. The "c" array itself would be
   deeply cloned, such that future changes to the clone are not
   visible to the parent, and vice versa, but immutable values within
   the array are shared (in this case the string "hi"). The
   justification for this heuristic is that immutable values can never
   be changed, so there is no harm in sharing them across
   clones. Additionally, such types can never contribute to cycles in
   a JSON tree, so they are safe to share this way. Objects and
   Arrays, on the other hand, can be modified later and can contribute
   to cycles, and thus the clone needs to be an independent instance.
   Note, however, that if this function directly passed a
   non-Object/Array, that value is deeply cloned. The sharing
   behaviour only applies when traversing Objects/Arrays.
*/
cson_value * cson_value_clone( cson_value const * orig );

/**
   Returns the value handle associated with s. The handle itself owns
   s, and ownership of the handle is not changed by calling this
   function. If the returned handle is part of a container, calling
   cson_value_free() on the returned handle invoked undefined
   behaviour (quite possibly downstream when the container tries to
   use it).

   This function only returns NULL if s is NULL. The length of the
   returned string is cson_string_length_bytes().
*/
cson_value * cson_string_value(cson_string const * s);
/**
   The Object form of cson_string_value(). See that function
   for full details.
*/
cson_value * cson_object_value(cson_object const * s);

/**
   The Array form of cson_string_value(). See that function
   for full details.
*/
cson_value * cson_array_value(cson_array const * s);


/**
   Calculates the approximate in-memory-allocated size of v,
   recursively if it is a container type, with the following caveats
   and limitations:

   If a given value is reference counted and encountered multiple
   times within a traversed container, each reference is counted at
   full cost. We have no way of knowing if a given reference has been
   visited already and whether it should or should not be counted, so
   we pessimistically count them even though the _might_ not really
   count for the given object tree (it depends on where the other open
   references live).

   This function returns 0 if any of the following are true:

   - v is NULL

   - v is one of the special singleton values (null, bools, empty
   string, int 0, double 0.0)

   All other values require an allocation, and this will return their
   total memory cost, including the cson-specific internals and the
   native value(s).

   Note that because arrays and objects might have more internal slots
   allocated than used, the alloced size of a container does not
   necessarily increase when a new item is inserted into it. An interesting
   side-effect of this is that when cson_clone()ing an array or object, the
   size of the clone can actually be less than the original.
*/
unsigned int cson_value_msize(cson_value const * v);

/**
   Parses command-line-style arguments into a JSON object.

   It expects arguments to be in any of these forms, and any number
   of leading dashes are treated identically:

   --key : Treats key as a boolean with a true value.

   --key=VAL : Treats VAL as either a double, integer, or string.

   --key= : Treats key as a JSON null (not literal NULL) value.

   Arguments not starting with a dash are skipped.
   
   Each key/value pair is inserted into an object.  If a given key
   appears more than once then only the final entry is actually
   stored.

   argc and argv are expected to be values from main() (or similar,
   possibly adjusted to remove argv[0]).

   tgt must be either a pointer to NULL or a pointer to a
   client-provided Object. If (NULL==*tgt) then this function
   allocates a new object and on success it stores the new object in
   *tgt (it is owned by the caller). If (NULL!=*tgt) then it is
   assumed to be a properly allocated object. DO NOT pass a pointer to
   an unitialized pointer, as that will fool this function into
   thinking it is a valid object and Undefined Behaviour will ensue.

   If count is not NULL then the number of arugments parsed by this
   function are assigned to it. On error, count will be the number of
   options successfully parsed before the error was encountered.

   On success:

   - 0 is returned.

   - If (*tgt==NULL) then *tgt is assigned to a newly-allocated
   object, owned by the caller. Note that even if no arguments are
   parsed, the object is still created.

   On error:

   - non-0 is returned

   - If (*tgt==NULL) then it is not modified.

   - If (*tgt!=NULL) (i.e., the caller provides his own object) then
   it might contain partial results.
*/
int cson_parse_argv_flags( int argc, char const * const * argv,
                           cson_object ** tgt, unsigned int * count );

/**
    Return values for the cson_pack() and cson_unpack() interfaces.
*/
enum cson_pack_retval {
    /** Signals an out-of-memory error. */
    CSON_PACK_ALLOC_ERROR = -1,
    /** Signals a syntax error in the format string. */
    CSON_PACK_ARG_ERROR = -2,
    /**
        Signals an that an internal error has occurred.
        This indicates a bug in this library.
    */
    CSON_PACK_INTERNAL_ERROR = -3,
    /**
       Signals that the JSON document does not validate agains the format
       string passed to cson_unpack().
    */
    CSON_PACK_VALIDATION_ERROR = -4
};

/**
   Construct arbitrarily complex JSON documents from native C types.

   Create a new object or array and add or merge the passed values and
   properties to it according to the supplied format string.

   fmt is a format string, it must at least contain an array or object
   specifier as its root value. Format specifiers start with a percent sign '\%'
   followed by one or more modifiers and a type character. Object properties
   are specified as key-value pairs where the key is specified as a string and
   passed as an argument of const char *. Any space, tab, carriage return, line
   feed, colon and comma characters between format specifiers are ignored.

   | Type  | Description |
   | :--:  | :---------- |
   | s     | creates either a property name or a string value, in case of the former the corresponding argument is a pointer to const char which is a sequence of bytes specifying the name of the property that is to be created, in case of the latter the corresponding argument is a pointer to const char |
   | d     | creates an integer value, the corresponding argument is an int |
   | i     | ^ |
   | f     | creates a floating point value, the corresponding argument is a double |
   | b     | creates a boolean value, the corresponding argument is an int |
   | N     | creates a null value |
   | [...] | creates an array, the corresponding argument is a pointer to a cson_array |
   | {...} | creates an array, the corresponding argument is a pointer to a cson_object |

   | Modifier | Description |
   | :------: | :---------- |
   | l        | specifies that the following d or i specifier applies to an argument which is a pointer to long |
   | ll       | specifies that the following d or i specifier applies to an argument which is a pointer to cson_int_t |

   | Short Form | Expands to
   | :--------: | :--------- |
   | {...}      | %*{...} |
   | [...]      | %*[...] |
   | \%D        | \%lld |


   Returns 0 on success. The error conditions are:

  - CSON_PACK_ARG_ERROR: fmt contains a syntax error

  - CSON_PACK_ALLOC_ERROR: a memory allocation failed

  - CSON_PACK_INTERNAL_ERROR: an internal error has occurred, this is a bug in
    cson

  Example:
  @code
  cson_value * root_value;
  cson_array * arr;
  ...
  rc = cson_pack( root_value, "{%s: %d, %s: %[]}", "foo", 42, "bar", arr );
  if( 0 != rc ) {
    ... error ...
  }
  @endcode
*/
int cson_pack( cson_value **root_valuep, const char *fmt, ... );

/**
   Same as cson_pack() except that it takes a va_list instead of a variable
   number of arguments.
*/
int cson_vpack( cson_value **root_valuep, const char *fmt, va_list args );

/**
   Iterate over the given object or array and convert an arbitrary number of
   JSON values into their native C types or validates them according to the
   given format string fmt.

   fmt is a format string, it must at least contain an array or object
   specifier as its root value. Format specifiers start with a percent sign '\%'
   followed by one or more modifiers and a type character. Object properties
   are specified as key-value pairs where the key is specified as a string and
   passed as an argument of const char *. Any space, tab, carriage return, line
   feed, colon and comma characters between format specifiers are ignored.

   | Type  | Description |
   | :--:  | :---------- |
   | s     | matches a either a property name or a string value, in case of the former the corresponding argument is a pointer to const char which is a sequence of bytes specifying the name of the property that is to be matched, in case of the latter the corresponding argument is a pointer to a pointer to const char unless the 'm' modifier is specified where the the corresponding argument is a pointer to a pointer to char |
   | d     | matches an integer value and must be used in with the "ll" modifier, the corresponding argument is a pointer to cson_int_t |
   | i     | ^ |
   | f     | matches a floating point value, the corresponding argument is a pointer to double |
   | b     | matches a boolean value, the corresponding argument is a pointer to int |
   | N     | matches a null value |
   | [...] | matches an array, the corresponding argument is a pointer to a pointer to a cson_array |
   | {...} | matches an array, the corresponding argument is a pointer to a pointer to a cson_object |

   | Modifier | Description |
   | :------: | :---------- |
   | ?        | specifies that the property reffered to by the given property name is optional |
   | *        | suppresses assignment, only check for the presence and type of the specified value |
   | m        | allocates a memory buffer for the extracted string |
   | ll       | specifies that the following d or i specifier applies to an argument which is a pointer to cson_int_t |

   | Short Form | Expands to
   | :--------: | :--------- |
   | {...}      | %*{...} |
   | [...]      | %*[...] |
   | \%D        | \%lld |

   Returns 0 on success. The error conditions are:

  - CSON_PACK_ARG_ERROR: fmt contains a syntax error

  - CSON_PACK_ALLOC_ERROR: a memory allocation failed

  - CSON_PACK_VALIDATION_ERROR: validation failed, the JSON document structure
    differs from that described by the format string

  - CSON_PACK_INTERNAL_ERROR: an internal error has occurred, this
    indicates a bug in this library.

  Example:
  @code
  cson_value * root_value;
  cson_int_t x = 0;
  cson_array * arr = NULL;
  const char *str = NULL;
  ...
  rc = cson_unpack( root_value, "{%s: %d, %s: %[], %?s: %s}", "foo", &x, "bar", &arr, "baz", &str );
  if( rc < 3 && rc >= 0  ) {
    ... optional property is missing ...
  } else if ( CSON_PACK_ALLOC_ERROR == rc ) {
    ... out of memory error ...
  } else if ( CSON_PACK_VALIDATION_ERROR == rc ) {
    ... unexpected JSON document structure ...
  } else if ( rc ) {
    ... internal error ...
  }
  @endcode

*/
int cson_unpack( cson_value *root_value, const char *fmt, ... );

/**
   Same as cson_unpack() except that it takes a va_list instead of a variable
   number of arguments.
*/
int cson_vunpack( cson_value *root_value, const char *fmt, va_list args );

/* LICENSE

This software's source code, including accompanying documentation and
demonstration applications, are licensed under the following
conditions...

Certain files are imported from external projects and have their own
licensing terms. Namely, the JSON_parser.* files. See their files for
their official licenses, but the summary is "do what you want [with
them] but leave the license text and copyright in place."

The author (Stephan G. Beal [http://wanderinghorse.net/home/stephan/])
explicitly disclaims copyright in all jurisdictions which recognize
such a disclaimer. In such jurisdictions, this software is released
into the Public Domain.

In jurisdictions which do not recognize Public Domain property
(e.g. Germany as of 2011), this software is Copyright (c) 2011 by
Stephan G. Beal, and is released under the terms of the MIT License
(see below).

In jurisdictions which recognize Public Domain property, the user of
this software may choose to accept it either as 1) Public Domain, 2)
under the conditions of the MIT License (see below), or 3) under the
terms of dual Public Domain/MIT License conditions described here, as
they choose.

The MIT License is about as close to Public Domain as a license can
get, and is described in clear, concise terms at:

    http://en.wikipedia.org/wiki/MIT_License

The full text of the MIT License follows:

--
Copyright (c) 2011 Stephan G. Beal (http://wanderinghorse.net/home/stephan/)

Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

--END OF MIT LICENSE--

For purposes of the above license, the term "Software" includes
documentation and demonstration source code which accompanies
this software. ("Accompanies" = is contained in the Software's
primary public source code repository.)

*/

#if defined(__cplusplus)
} /*extern "C"*/
#endif

#endif /* WANDERINGHORSE_NET_CSON_H_INCLUDED */
/* end file include/wh/cson/cson.h */
/* begin file include/wh/cson/cson_sqlite3.h */
/** @file cson_sqlite3.h

This file contains cson's public sqlite3-to-JSON API declarations
and API documentation. If CSON_ENABLE_SQLITE3 is not defined,
or is defined to 0, then including this file will have no side-effects
other than defining CSON_ENABLE_SQLITE3 (if it was not defined) to 0
and defining a few include guard macros. i.e. if CSON_ENABLE_SQLITE3
is not set to a true value then the API is not visible.

This API requires that <sqlite3.h> be in the INCLUDES path and that
the client eventually link to (or directly embed) the sqlite3 library.
*/
#if !defined(WANDERINGHORSE_NET_CSON_SQLITE3_H_INCLUDED)
#define WANDERINGHORSE_NET_CSON_SQLITE3_H_INCLUDED 1
#if !defined(CSON_ENABLE_SQLITE3)
#  if defined(DOXYGEN)
#define CSON_ENABLE_SQLITE3 1
#  else
#define CSON_ENABLE_SQLITE3 1
#  endif
#endif

#if CSON_ENABLE_SQLITE3 /* we do this here for the sake of the amalgamation build */
#include "sqlite3.h"

#if defined(__cplusplus)
extern "C" {
#endif

/**
   Converts a single value from a single 0-based column index to its JSON
   equivalent.

   On success it returns a new JSON value, which will have a different concrete
   type depending on the field type reported by sqlite3_column_type(st,col):

   Integer, double, null, or string (TEXT and BLOB data, though not
   all blob data is legal for a JSON string).

   st must be a sqlite3_step()'d row and col must be a 0-based column
   index within that result row.
 */       
cson_value * cson_sqlite3_column_to_value( sqlite3_stmt * st, int col );

/**
   Creates a JSON Array object containing the names of all columns
   of the given prepared statement handle. 
    
   Returns a new array value on success, which the caller owns. Its elements
   are in the same order as in the underlying query.

   On error NULL is returned.
    
   st is not traversed or freed by this function - only the column
   count and names are read.
*/
cson_value * cson_sqlite3_column_names( sqlite3_stmt * st );

/**
   Creates a JSON Object containing key/value pairs corresponding
   to the result columns in the current row of the given statement
   handle. st must be a sqlite3_step()'d row result.

   On success a new Object is returned which is owned by the
   caller. On error NULL is returned.

   cson_sqlite3_column_to_value() is used to convert each column to a
   JSON value, and the column names are taken from
   sqlite3_column_name().
*/
cson_value * cson_sqlite3_row_to_object( sqlite3_stmt * st );
/**
   Functionally almost identical to cson_sqlite3_row_to_object(), the
   only difference being how the result objects gets its column names.
   st must be a freshly-step()'d handle holding a result row.
   colNames must be an Array with at least the same number of columns
   as st. If it has fewer, NULL is returned and this function has
   no side-effects.

   For each column in the result set, the colNames entry at the same
   index is used for the column key. If a given entry is-not-a String
   then conversion will fail and NULL will be returned.

   The one reason to prefer this over cson_sqlite3_row_to_object() is
   that this one can share the keys across multiple rows (or even
   other JSON containers), whereas the former makes fresh copies of
   the column names for each row.

*/
cson_value * cson_sqlite3_row_to_object2( sqlite3_stmt * st,
                                          cson_array * colNames );

/**
   Similar to cson_sqlite3_row_to_object(), but creates an Array
   value which contains the JSON-form values of the given result
   set row.
*/
cson_value * cson_sqlite3_row_to_array( sqlite3_stmt * st );
/**
    Converts the results of an sqlite3 SELECT statement to JSON,
    in the form of a cson_value object tree.
    
    st must be a prepared, but not yet traversed, SELECT query.
    tgt must be a pointer to NULL (see the example below). If
    either of those arguments are NULL, cson_rc.ArgError is returned.
    
    This walks the query results and returns a JSON object which
    has a different structure depending on the value of the 'fat'
    argument.
    
    
    If 'fat' is 0 then the structure is:
    
    @code
    {
        "columns":["colName1",..."colNameN"],
        "rows":[
            [colVal0, ... colValN],
            [colVal0, ... colValN],
            ...
        ]
    }
    @endcode
    
    In the "non-fat" format the order of the columns and row values is
    guaranteed to be the same as that of the underlying query.
    
    If 'fat' is not 0 then the structure is:
    
    @code
    {
        "columns":["colName1",..."colNameN"],
        "rows":[
            {"colName1":value1,..."colNameN":valueN},
            {"colName1":value1,..."colNameN":valueN},
            ...
        ]
    }
    @endcode

    In the "fat" format, the order of the "columns" entries is guaranteed
    to be the same as the underlying query fields, but the order
    of the keys in the "rows" might be different and might in fact
    change when passed through different JSON implementations,
    depending on how they implement object key/value pairs.

    On success it returns 0 and assigns *tgt to a newly-allocated
    JSON object tree (using the above structure), which the caller owns.
    If the query returns no rows, the "rows" value will be an empty
    array, as opposed to null.
    
    On error non-0 is returned and *tgt is not modified.
    
    The error code cson_rc.IOError is used to indicate a db-level
    error, and cson_rc.TypeError is returned if sqlite3_column_count(st)
    returns 0 or less (indicating an invalid or non-SELECT statement).
    
    The JSON data types are determined by the column type as reported
    by sqlite3_column_type():
    
    SQLITE_INTEGER: integer
    
    SQLITE_FLOAT: double
    
    SQLITE_TEXT or SQLITE_BLOB: string, and this will only work if
    the data is UTF8 compatible.
    
    If the db returns a literal or SQL NULL for a value it is converted
    to a JSON null. If it somehow finds a column type it cannot handle,
    the value is also converted to a NULL in the output.

    Example
    
    @code
    cson_value * json = NULL;
    int rc = cson_sqlite3_stmt_to_json( myStatement, &json, 1 );
    if( 0 != rc ) { ... error ... }
    else {
        cson_output_FILE( json, stdout, NULL );
        cson_value_free( json );
    }
    @endcode
*/
int cson_sqlite3_stmt_to_json( sqlite3_stmt * st, cson_value ** tgt, char fat );

/**
    A convenience wrapper around cson_sqlite3_stmt_to_json(), which
    takes SQL instead of a sqlite3_stmt object. It has the same
    return value and argument semantics as that function.
*/
int cson_sqlite3_sql_to_json( sqlite3 * db, cson_value ** tgt, char const * sql, char fat );

/**
   Binds a JSON value to a 1-based parameter index in a prepared SQL
   statement. v must be NULL or one of one of the types (null, string,
   integer, double, boolean, array). Booleans are bound as integer 0
   or 1. NULL or null are bound as SQL NULL. Integers are bound as
   64-bit ints. Strings are bound using sqlite3_bind_text() (as
   opposed to text16), but we could/should arguably bind them as
   blobs.

   If v is an Array then ndx is is used as a starting position
   (1-based) and each item in the array is bound to the next parameter
   position (starting and ndx, though the array uses 0-based offsets).

   TODO: add Object support for named parameters.

   Returns 0 on success, non-0 on error.
 */
int cson_sqlite3_bind_value( sqlite3_stmt * st, int ndx, cson_value const * v );
    
#if defined(__cplusplus)
} /*extern "C"*/
#endif
    
#endif /* CSON_ENABLE_SQLITE3 */
#endif /* WANDERINGHORSE_NET_CSON_SQLITE3_H_INCLUDED */
/* end file include/wh/cson/cson_sqlite3.h */
#endif /* FOSSIL_ENABLE_JSON */
Added extsrc/linenoise.c.


































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#line 1 "utf8.h"
#ifndef UTF8_UTIL_H
#define UTF8_UTIL_H

#ifdef __cplusplus
extern "C" {
#endif

/**
 * UTF-8 utility functions
 *
 * (c) 2010-2019 Steve Bennett <steveb@workware.net.au>
 *
 * See utf8.c for licence details.
 */

#ifndef USE_UTF8
#include <ctype.h>

#define MAX_UTF8_LEN 1

/* No utf-8 support. 1 byte = 1 char */
#define utf8_strlen(S, B) ((B) < 0 ? (int)strlen(S) : (B))
#define utf8_strwidth(S, B) utf8_strlen((S), (B))
#define utf8_tounicode(S, CP) (*(CP) = (unsigned char)*(S), 1)
#define utf8_index(C, I) (I)
#define utf8_charlen(C) 1
 #define utf8_width(C) 1

#else

#define MAX_UTF8_LEN 4

/**
 * Converts the given unicode codepoint (0 - 0x1fffff) to utf-8
 * and stores the result at 'p'.
 *
 * Returns the number of utf-8 characters
 */
int utf8_fromunicode(char *p, unsigned uc);

/**
 * Returns the length of the utf-8 sequence starting with 'c'.
 *
 * Returns 1-4, or -1 if this is not a valid start byte.
 *
 * Note that charlen=4 is not supported by the rest of the API.
 */
int utf8_charlen(int c);

/**
 * Returns the number of characters in the utf-8
 * string of the given byte length.
 *
 * Any bytes which are not part of an valid utf-8
 * sequence are treated as individual characters.
 *
 * The string *must* be null terminated.
 *
 * Does not support unicode code points > \u1fffff
 */
int utf8_strlen(const char *str, int bytelen);

/**
 * Calculates the display width of the first 'charlen' characters in 'str'.
 * See utf8_width()
 */
int utf8_strwidth(const char *str, int charlen);

/**
 * Returns the byte index of the given character in the utf-8 string.
 *
 * The string *must* be null terminated.
 *
 * This will return the byte length of a utf-8 string
 * if given the char length.
 */
int utf8_index(const char *str, int charindex);

/**
 * Returns the unicode codepoint corresponding to the
 * utf-8 sequence 'str'.
 *
 * Stores the result in *uc and returns the number of bytes
 * consumed.
 *
 * If 'str' is null terminated, then an invalid utf-8 sequence
 * at the end of the string will be returned as individual bytes.
 *
 * If it is not null terminated, the length *must* be checked first.
 *
 * Does not support unicode code points > \u1fffff
 */
int utf8_tounicode(const char *str, int *uc);

/**
 * Returns the width (in characters) of the given unicode codepoint.
 * This is 1 for normal letters and 0 for combining characters and 2 for wide characters.
 */
int utf8_width(int ch);

#endif

#ifdef __cplusplus
}
#endif

#endif
#line 1 "utf8.c"
/**
 * UTF-8 utility functions
 *
 * (c) 2010-2019 Steve Bennett <steveb@workware.net.au>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#ifndef UTF8_UTIL_H
#include "utf8.h"
#endif

#ifdef USE_UTF8
int utf8_fromunicode(char *p, unsigned uc)
{
    if (uc <= 0x7f) {
        *p = uc;
        return 1;
    }
    else if (uc <= 0x7ff) {
        *p++ = 0xc0 | ((uc & 0x7c0) >> 6);
        *p = 0x80 | (uc & 0x3f);
        return 2;
    }
    else if (uc <= 0xffff) {
        *p++ = 0xe0 | ((uc & 0xf000) >> 12);
        *p++ = 0x80 | ((uc & 0xfc0) >> 6);
        *p = 0x80 | (uc & 0x3f);
        return 3;
    }
    /* Note: We silently truncate to 21 bits here: 0x1fffff */
    else {
        *p++ = 0xf0 | ((uc & 0x1c0000) >> 18);
        *p++ = 0x80 | ((uc & 0x3f000) >> 12);
        *p++ = 0x80 | ((uc & 0xfc0) >> 6);
        *p = 0x80 | (uc & 0x3f);
        return 4;
    }
}

int utf8_charlen(int c)
{
    if ((c & 0x80) == 0) {
        return 1;
    }
    if ((c & 0xe0) == 0xc0) {
        return 2;
    }
    if ((c & 0xf0) == 0xe0) {
        return 3;
    }
    if ((c & 0xf8) == 0xf0) {
        return 4;
    }
    /* Invalid sequence */
    return -1;
}

int utf8_strlen(const char *str, int bytelen)
{
    int charlen = 0;
    if (bytelen < 0) {
        bytelen = strlen(str);
    }
    while (bytelen > 0) {
        int c;
        int l = utf8_tounicode(str, &c);
        charlen++;
        str += l;
        bytelen -= l;
    }
    return charlen;
}

int utf8_strwidth(const char *str, int charlen)
{
    int width = 0;
    while (charlen) {
        int c;
        int l = utf8_tounicode(str, &c);
        width += utf8_width(c);
        str += l;
        charlen--;
    }
    return width;
}

int utf8_index(const char *str, int index)
{
    const char *s = str;
    while (index--) {
        int c;
        s += utf8_tounicode(s, &c);
    }
    return s - str;
}

int utf8_tounicode(const char *str, int *uc)
{
    unsigned const char *s = (unsigned const char *)str;

    if (s[0] < 0xc0) {
        *uc = s[0];
        return 1;
    }
    if (s[0] < 0xe0) {
        if ((s[1] & 0xc0) == 0x80) {
            *uc = ((s[0] & ~0xc0) << 6) | (s[1] & ~0x80);
            if (*uc >= 0x80) {
                return 2;
            }
            /* Otherwise this is an invalid sequence */
        }
    }
    else if (s[0] < 0xf0) {
        if (((str[1] & 0xc0) == 0x80) && ((str[2] & 0xc0) == 0x80)) {
            *uc = ((s[0] & ~0xe0) << 12) | ((s[1] & ~0x80) << 6) | (s[2] & ~0x80);
            if (*uc >= 0x800) {
                return 3;
            }
            /* Otherwise this is an invalid sequence */
        }
    }
    else if (s[0] < 0xf8) {
        if (((str[1] & 0xc0) == 0x80) && ((str[2] & 0xc0) == 0x80) && ((str[3] & 0xc0) == 0x80)) {
            *uc = ((s[0] & ~0xf0) << 18) | ((s[1] & ~0x80) << 12) | ((s[2] & ~0x80) << 6) | (s[3] & ~0x80);
            if (*uc >= 0x10000) {
                return 4;
            }
            /* Otherwise this is an invalid sequence */
        }
    }

    /* Invalid sequence, so just return the byte */
    *uc = *s;
    return 1;
}

struct utf8range {
    int lower;     /* lower inclusive */
    int upper;     /* upper exclusive */
};

/* From http://unicode.org/Public/UNIDATA/UnicodeData.txt */
static const struct utf8range unicode_range_combining[] = {
        { 0x0300, 0x0370 },     { 0x0483, 0x048a },     { 0x0591, 0x05d0 },     { 0x0610, 0x061b },
        { 0x064b, 0x0660 },     { 0x0670, 0x0671 },     { 0x06d6, 0x06dd },     { 0x06df, 0x06e5 },
        { 0x06e7, 0x06ee },     { 0x0711, 0x0712 },     { 0x0730, 0x074d },     { 0x07a6, 0x07b1 },
        { 0x07eb, 0x07f4 },     { 0x0816, 0x0830 },     { 0x0859, 0x085e },     { 0x08d4, 0x0904 },
        { 0x093a, 0x0958 },     { 0x0962, 0x0964 },     { 0x0981, 0x0985 },     { 0x09bc, 0x09ce },
        { 0x09d7, 0x09dc },     { 0x09e2, 0x09e6 },     { 0x0a01, 0x0a05 },     { 0x0a3c, 0x0a59 },
        { 0x0a70, 0x0a72 },     { 0x0a75, 0x0a85 },     { 0x0abc, 0x0ad0 },     { 0x0ae2, 0x0ae6 },
        { 0x0afa, 0x0b05 },     { 0x0b3c, 0x0b5c },     { 0x0b62, 0x0b66 },     { 0x0b82, 0x0b83 },
        { 0x0bbe, 0x0bd0 },     { 0x0bd7, 0x0be6 },     { 0x0c00, 0x0c05 },     { 0x0c3e, 0x0c58 },
        { 0x0c62, 0x0c66 },     { 0x0c81, 0x0c85 },     { 0x0cbc, 0x0cde },     { 0x0ce2, 0x0ce6 },
        { 0x0d00, 0x0d05 },     { 0x0d3b, 0x0d4e },     { 0x0d57, 0x0d58 },     { 0x0d62, 0x0d66 },
        { 0x0d82, 0x0d85 },     { 0x0dca, 0x0de6 },     { 0x0df2, 0x0df4 },     { 0x0e31, 0x0e32 },
        { 0x0e34, 0x0e3f },     { 0x0e47, 0x0e4f },     { 0x0eb1, 0x0eb2 },     { 0x0eb4, 0x0ebd },
        { 0x0ec8, 0x0ed0 },     { 0x0f18, 0x0f1a },     { 0x0f35, 0x0f3a },     { 0x0f3e, 0x0f40 },
        { 0x0f71, 0x0f88 },     { 0x0f8d, 0x0fbe },     { 0x0fc6, 0x0fc7 },     { 0x102b, 0x103f },
        { 0x1056, 0x105a },     { 0x105e, 0x1065 },     { 0x1067, 0x106e },     { 0x1071, 0x1075 },
        { 0x1082, 0x1090 },     { 0x109a, 0x109e },     { 0x135d, 0x1360 },     { 0x1712, 0x1720 },
        { 0x1732, 0x1735 },     { 0x1752, 0x1760 },     { 0x1772, 0x1780 },     { 0x17b4, 0x17d4 },
        { 0x17dd, 0x17e0 },     { 0x180b, 0x180e },     { 0x1885, 0x1887 },     { 0x18a9, 0x18aa },
        { 0x1920, 0x1940 },     { 0x1a17, 0x1a1e },     { 0x1a55, 0x1a80 },     { 0x1ab0, 0x1b05 },
        { 0x1b34, 0x1b45 },     { 0x1b6b, 0x1b74 },     { 0x1b80, 0x1b83 },     { 0x1ba1, 0x1bae },
        { 0x1be6, 0x1bfc },     { 0x1c24, 0x1c3b },     { 0x1cd0, 0x1ce9 },     { 0x1ced, 0x1cee },
        { 0x1cf2, 0x1cf5 },     { 0x1cf7, 0x1d00 },     { 0x1dc0, 0x1e00 },     { 0x20d0, 0x2100 },
        { 0x2cef, 0x2cf2 },     { 0x2d7f, 0x2d80 },     { 0x2de0, 0x2e00 },     { 0x302a, 0x3030 },
        { 0x3099, 0x309b },     { 0xa66f, 0xa67e },     { 0xa69e, 0xa6a0 },     { 0xa6f0, 0xa6f2 },
        { 0xa802, 0xa803 },     { 0xa806, 0xa807 },     { 0xa80b, 0xa80c },     { 0xa823, 0xa828 },
        { 0xa880, 0xa882 },     { 0xa8b4, 0xa8ce },     { 0xa8e0, 0xa8f2 },     { 0xa926, 0xa92e },
        { 0xa947, 0xa95f },     { 0xa980, 0xa984 },     { 0xa9b3, 0xa9c1 },     { 0xa9e5, 0xa9e6 },
        { 0xaa29, 0xaa40 },     { 0xaa43, 0xaa44 },     { 0xaa4c, 0xaa50 },     { 0xaa7b, 0xaa7e },
        { 0xaab0, 0xaab5 },     { 0xaab7, 0xaab9 },     { 0xaabe, 0xaac2 },     { 0xaaeb, 0xaaf0 },
        { 0xaaf5, 0xab01 },     { 0xabe3, 0xabf0 },     { 0xfb1e, 0xfb1f },     { 0xfe00, 0xfe10 },
        { 0xfe20, 0xfe30 },
};

/* From http://unicode.org/Public/UNIDATA/EastAsianWidth.txt */
static const struct utf8range unicode_range_wide[] = {
        { 0x1100, 0x115f },     { 0x231a, 0x231b },     { 0x2329, 0x232a },     { 0x23e9, 0x23ec },
        { 0x23f0, 0x23f0 },     { 0x23f3, 0x23f3 },     { 0x25fd, 0x25fe },     { 0x2614, 0x2615 },
        { 0x2648, 0x2653 },     { 0x267f, 0x267f },     { 0x2693, 0x2693 },     { 0x26a1, 0x26a1 },
        { 0x26aa, 0x26ab },     { 0x26bd, 0x26be },     { 0x26c4, 0x26c5 },     { 0x26ce, 0x26ce },
        { 0x26d4, 0x26d4 },     { 0x26ea, 0x26ea },     { 0x26f2, 0x26f3 },     { 0x26f5, 0x26f5 },
        { 0x26fa, 0x26fa },     { 0x26fd, 0x26fd },     { 0x2705, 0x2705 },     { 0x270a, 0x270b },
        { 0x2728, 0x2728 },     { 0x274c, 0x274c },     { 0x274e, 0x274e },     { 0x2753, 0x2755 },
        { 0x2757, 0x2757 },     { 0x2795, 0x2797 },     { 0x27b0, 0x27b0 },     { 0x27bf, 0x27bf },
        { 0x2b1b, 0x2b1c },     { 0x2b50, 0x2b50 },     { 0x2b55, 0x2b55 },     { 0x2e80, 0x2e99 },
        { 0x2e9b, 0x2ef3 },     { 0x2f00, 0x2fd5 },     { 0x2ff0, 0x2ffb },     { 0x3001, 0x303e },
        { 0x3041, 0x3096 },     { 0x3099, 0x30ff },     { 0x3105, 0x312e },     { 0x3131, 0x318e },
        { 0x3190, 0x31ba },     { 0x31c0, 0x31e3 },     { 0x31f0, 0x321e },     { 0x3220, 0x3247 },
        { 0x3250, 0x32fe },     { 0x3300, 0x4dbf },     { 0x4e00, 0xa48c },     { 0xa490, 0xa4c6 },
        { 0xa960, 0xa97c },     { 0xac00, 0xd7a3 },     { 0xf900, 0xfaff },     { 0xfe10, 0xfe19 },
        { 0xfe30, 0xfe52 },     { 0xfe54, 0xfe66 },     { 0xfe68, 0xfe6b },     { 0x16fe0, 0x16fe1 },
        { 0x17000, 0x187ec },   { 0x18800, 0x18af2 },   { 0x1b000, 0x1b11e },   { 0x1b170, 0x1b2fb },
        { 0x1f004, 0x1f004 },   { 0x1f0cf, 0x1f0cf },   { 0x1f18e, 0x1f18e },   { 0x1f191, 0x1f19a },
        { 0x1f200, 0x1f202 },   { 0x1f210, 0x1f23b },   { 0x1f240, 0x1f248 },   { 0x1f250, 0x1f251 },
        { 0x1f260, 0x1f265 },   { 0x1f300, 0x1f320 },   { 0x1f32d, 0x1f335 },   { 0x1f337, 0x1f37c },
        { 0x1f37e, 0x1f393 },   { 0x1f3a0, 0x1f3ca },   { 0x1f3cf, 0x1f3d3 },   { 0x1f3e0, 0x1f3f0 },
        { 0x1f3f4, 0x1f3f4 },   { 0x1f3f8, 0x1f43e },   { 0x1f440, 0x1f440 },   { 0x1f442, 0x1f4fc },
        { 0x1f4ff, 0x1f53d },   { 0x1f54b, 0x1f54e },   { 0x1f550, 0x1f567 },   { 0x1f57a, 0x1f57a },
        { 0x1f595, 0x1f596 },   { 0x1f5a4, 0x1f5a4 },   { 0x1f5fb, 0x1f64f },   { 0x1f680, 0x1f6c5 },
        { 0x1f6cc, 0x1f6cc },   { 0x1f6d0, 0x1f6d2 },   { 0x1f6eb, 0x1f6ec },   { 0x1f6f4, 0x1f6f8 },
        { 0x1f910, 0x1f93e },   { 0x1f940, 0x1f94c },   { 0x1f950, 0x1f96b },   { 0x1f980, 0x1f997 },
        { 0x1f9c0, 0x1f9c0 },   { 0x1f9d0, 0x1f9e6 },   { 0x20000, 0x2fffd },   { 0x30000, 0x3fffd },
};

#define ARRAYSIZE(A) sizeof(A) / sizeof(*(A))

static int cmp_range(const void *key, const void *cm)
{
    const struct utf8range *range = (const struct utf8range *)cm;
    int ch = *(int *)key;
    if (ch < range->lower) {
        return -1;
    }
    if (ch >= range->upper) {
        return 1;
    }
    return 0;
}

static int utf8_in_range(const struct utf8range *range, int num, int ch)
{
    const struct utf8range *r =
        bsearch(&ch, range, num, sizeof(*range), cmp_range);

    if (r) {
        return 1;
    }
    return 0;
}

int utf8_width(int ch)
{
    /* short circuit for common case */
    if (isascii(ch)) {
        return 1;
    }
    if (utf8_in_range(unicode_range_combining, ARRAYSIZE(unicode_range_combining), ch)) {
        return 0;
    }
    if (utf8_in_range(unicode_range_wide, ARRAYSIZE(unicode_range_wide), ch)) {
        return 2;
    }
    return 1;
}
#endif
#line 1 "stringbuf.h"
#ifndef STRINGBUF_H
#define STRINGBUF_H
/**
 * resizable string buffer
 *
 * (c) 2017-2020 Steve Bennett <steveb@workware.net.au>
 *
 * See utf8.c for licence details.
 */
#ifdef __cplusplus
extern "C" {
#endif

/** @file
 * A stringbuf is a resizing, null terminated string buffer.
 *
 * The buffer is reallocated as necessary.
 *
 * In general it is *not* OK to call these functions with a NULL pointer
 * unless stated otherwise.
 *
 * If USE_UTF8 is defined, supports utf8.
 */

/**
 * The stringbuf structure should not be accessed directly.
 * Use the functions below.
 */
typedef struct {
	int remaining;	/**< Allocated, but unused space */
	int last;		/**< Index of the null terminator (and thus the length of the string) */
#ifdef USE_UTF8
	int chars;		/**< Count of characters */
#endif
	char *data;		/**< Allocated memory containing the string or NULL for empty */
} stringbuf;

/**
 * Allocates and returns a new stringbuf with no elements.
 */
stringbuf *sb_alloc(void);

/**
 * Frees a stringbuf.
 * It is OK to call this with NULL.
 */
void sb_free(stringbuf *sb);

/**
 * Returns an allocated copy of the stringbuf
 */
stringbuf *sb_copy(stringbuf *sb);

/**
 * Returns the byte length of the buffer.
 * 
 * Returns 0 for both a NULL buffer and an empty buffer.
 */
static inline int sb_len(stringbuf *sb) {
	return sb->last;
}

/**
 * Returns the utf8 character length of the buffer.
 * 
 * Returns 0 for both a NULL buffer and an empty buffer.
 */
static inline int sb_chars(stringbuf *sb) {
#ifdef USE_UTF8
	return sb->chars;
#else
	return sb->last;
#endif
}

/**
 * Appends a null terminated string to the stringbuf
 */
void sb_append(stringbuf *sb, const char *str);

/**
 * Like sb_append() except does not require a null terminated string.
 * The length of 'str' is given as 'len'
 *
 * Note that in utf8 mode, characters will *not* be counted correctly
 * if a partial utf8 sequence is added with sb_append_len()
 */
void sb_append_len(stringbuf *sb, const char *str, int len);

/**
 * Returns a pointer to the null terminated string in the buffer.
 *
 * Note this pointer only remains valid until the next modification to the
 * string buffer.
 *
 * The returned pointer can be used to update the buffer in-place
 * as long as care is taken to not overwrite the end of the buffer.
 */
static inline char *sb_str(const stringbuf *sb)
{
	return sb->data;
}

/**
 * Inserts the given string *before* (zero-based) byte 'index' in the stringbuf.
 * If index is past the end of the buffer, the string is appended,
 * just like sb_append()
 */
void sb_insert(stringbuf *sb, int index, const char *str);

/**
 * Delete 'len' bytes in the string at the given index.
 *
 * Any bytes past the end of the buffer are ignored.
 * The buffer remains null terminated.
 *
 * If len is -1, deletes to the end of the buffer.
 */
void sb_delete(stringbuf *sb, int index, int len);

/**
 * Clear to an empty buffer.
 */
void sb_clear(stringbuf *sb);

/**
 * Return an allocated copy of buffer and frees 'sb'.
 *
 * If 'sb' is empty, returns an allocated copy of "".
 */
char *sb_to_string(stringbuf *sb);

#ifdef __cplusplus
}
#endif

#endif
#line 1 "stringbuf.c"
/**
 * resizable string buffer
 *
 * (c) 2017-2020 Steve Bennett <steveb@workware.net.au>
 *
 * See utf8.c for licence details.
 */
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <assert.h>

#ifndef STRINGBUF_H
#include "stringbuf.h"
#endif
#ifdef USE_UTF8
#ifndef UTF8_UTIL_H
#include "utf8.h"
#endif
#endif

#define SB_INCREMENT 200

stringbuf *sb_alloc(void)
{
	stringbuf *sb = (stringbuf *)malloc(sizeof(*sb));
	sb->remaining = 0;
	sb->last = 0;
#ifdef USE_UTF8
	sb->chars = 0;
#endif
	sb->data = NULL;

	return(sb);
}

void sb_free(stringbuf *sb)
{
	if (sb) {
		free(sb->data);
	}
	free(sb);
}

static void sb_realloc(stringbuf *sb, int newlen)
{
	sb->data = (char *)realloc(sb->data, newlen);
	sb->remaining = newlen - sb->last;
}

void sb_append(stringbuf *sb, const char *str)
{
	sb_append_len(sb, str, strlen(str));
}

void sb_append_len(stringbuf *sb, const char *str, int len)
{
	if (sb->remaining < len + 1) {
		sb_realloc(sb, sb->last + len + 1 + SB_INCREMENT);
	}
	memcpy(sb->data + sb->last, str, len);
	sb->data[sb->last + len] = 0;

	sb->last += len;
	sb->remaining -= len;
#ifdef USE_UTF8
	sb->chars += utf8_strlen(str, len);
#endif
}

char *sb_to_string(stringbuf *sb)
{
	if (sb->data == NULL) {
		/* Return an allocated empty string, not null */
		return strdup("");
	}
	else {
		/* Just return the data and free the stringbuf structure */
		char *pt = sb->data;
		free(sb);
		return pt;
	}
}

/* Insert and delete operations */

/* Moves up all the data at position 'pos' and beyond by 'len' bytes
 * to make room for new data
 *
 * Note: Does *not* update sb->chars
 */
static void sb_insert_space(stringbuf *sb, int pos, int len)
{
	assert(pos <= sb->last);

	/* Make sure there is enough space */
	if (sb->remaining < len) {
		sb_realloc(sb, sb->last + len + SB_INCREMENT);
	}
	/* Now move it up */
	memmove(sb->data + pos + len, sb->data + pos, sb->last - pos);
	sb->last += len;
	sb->remaining -= len;
	/* And null terminate */
	sb->data[sb->last] = 0;
}

/**
 * Move down all the data from pos + len, effectively
 * deleting the data at position 'pos' of length 'len'
 */
static void sb_delete_space(stringbuf *sb, int pos, int len)
{
	assert(pos < sb->last);
	assert(pos + len <= sb->last);

#ifdef USE_UTF8
	sb->chars -= utf8_strlen(sb->data + pos, len);
#endif

	/* Now move it up */
	memmove(sb->data + pos, sb->data + pos + len, sb->last - pos - len);
	sb->last -= len;
	sb->remaining += len;
	/* And null terminate */
	sb->data[sb->last] = 0;
}

void sb_insert(stringbuf *sb, int index, const char *str)
{
	if (index >= sb->last) {
		/* Inserting after the end of the list appends. */
		sb_append(sb, str);
	}
	else {
		int len = strlen(str);

		sb_insert_space(sb, index, len);
		memcpy(sb->data + index, str, len);
#ifdef USE_UTF8
		sb->chars += utf8_strlen(str, len);
#endif
	}
}

/**
 * Delete the bytes at index 'index' for length 'len'
 * Has no effect if the index is past the end of the list.
 */
void sb_delete(stringbuf *sb, int index, int len)
{
	if (index < sb->last) {
		char *pos = sb->data + index;
		if (len < 0) {
			len = sb->last;
		}

		sb_delete_space(sb, pos - sb->data, len);
	}
}

void sb_clear(stringbuf *sb)
{
	if (sb->data) {
		/* Null terminate */
		sb->data[0] = 0;
		sb->last = 0;
#ifdef USE_UTF8
		sb->chars = 0;
#endif
	}
}
#line 1 "linenoise.c"
/* linenoise.c -- guerrilla line editing library against the idea that a
 * line editing lib needs to be 20,000 lines of C code.
 *
 * You can find the latest source code at:
 *
 *   http://github.com/msteveb/linenoise
 *   (forked from http://github.com/antirez/linenoise)
 *
 * Does a number of crazy assumptions that happen to be true in 99.9999% of
 * the 2010 UNIX computers around.
 *
 * ------------------------------------------------------------------------
 *
 * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
 * Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
 * Copyright (c) 2011, Steve Bennett <steveb at workware dot net dot au>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  *  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *  *  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ------------------------------------------------------------------------
 *
 * References:
 * - http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
 * - http://www.3waylabs.com/nw/WWW/products/wizcon/vt220.html
 *
 * Bloat:
 * - Completion?
 *
 * Unix/termios
 * ------------
 * List of escape sequences used by this program, we do everything just
 * a few sequences. In order to be so cheap we may have some
 * flickering effect with some slow terminal, but the lesser sequences
 * the more compatible.
 *
 * EL (Erase Line)
 *    Sequence: ESC [ 0 K
 *    Effect: clear from cursor to end of line
 *
 * CUF (CUrsor Forward)
 *    Sequence: ESC [ n C
 *    Effect: moves cursor forward n chars
 *
 * CR (Carriage Return)
 *    Sequence: \r
 *    Effect: moves cursor to column 1
 *
 * The following are used to clear the screen: ESC [ H ESC [ 2 J
 * This is actually composed of two sequences:
 *
 * cursorhome
 *    Sequence: ESC [ H
 *    Effect: moves the cursor to upper left corner
 *
 * ED2 (Clear entire screen)
 *    Sequence: ESC [ 2 J
 *    Effect: clear the whole screen
 *
 * == For highlighting control characters, we also use the following two ==
 * SO (enter StandOut)
 *    Sequence: ESC [ 7 m
 *    Effect: Uses some standout mode such as reverse video
 *
 * SE (Standout End)
 *    Sequence: ESC [ 0 m
 *    Effect: Exit standout mode
 *
 * == Only used if TIOCGWINSZ fails ==
 * DSR/CPR (Report cursor position)
 *    Sequence: ESC [ 6 n
 *    Effect: reports current cursor position as ESC [ NNN ; MMM R
 *
 * == Only used in multiline mode ==
 * CUU (Cursor Up)
 *    Sequence: ESC [ n A
 *    Effect: moves cursor up n chars.
 *
 * CUD (Cursor Down)
 *    Sequence: ESC [ n B
 *    Effect: moves cursor down n chars.
 *
 * win32/console
 * -------------
 * If __MINGW32__ is defined, the win32 console API is used.
 * This could probably be made to work for the msvc compiler too.
 * This support based in part on work by Jon Griffiths.
 */

#ifdef _WIN32 /* Windows platform, either MinGW or Visual Studio (MSVC) */
#include <windows.h>
#include <fcntl.h>
#define USE_WINCONSOLE
#ifdef __MINGW32__
#define HAVE_UNISTD_H
#endif
#else
#include <termios.h>
#include <sys/ioctl.h>
#include <poll.h>
#define USE_TERMIOS
#define HAVE_UNISTD_H
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/types.h>

#if defined(_WIN32) && !defined(__MINGW32__)
/* Microsoft headers don't like old POSIX names */
#define strdup _strdup
#define snprintf _snprintf
#endif

#include "linenoise.h"
#ifndef STRINGBUF_H
#include "stringbuf.h"
#endif
#ifndef UTF8_UTIL_H
#include "utf8.h"
#endif

#define LINENOISE_DEFAULT_HISTORY_MAX_LEN 100

/* ctrl('A') -> 0x01 */
#define ctrl(C) ((C) - '@')
/* meta('a') ->  0xe1 */
#define meta(C) ((C) | 0x80)

/* Use -ve numbers here to co-exist with normal unicode chars */
enum {
    SPECIAL_NONE,
    /* don't use -1 here since that indicates error */
    SPECIAL_UP = -20,
    SPECIAL_DOWN = -21,
    SPECIAL_LEFT = -22,
    SPECIAL_RIGHT = -23,
    SPECIAL_DELETE = -24,
    SPECIAL_HOME = -25,
    SPECIAL_END = -26,
    SPECIAL_INSERT = -27,
    SPECIAL_PAGE_UP = -28,
    SPECIAL_PAGE_DOWN = -29,

    /* Some handy names for other special keycodes */
    CHAR_ESCAPE = 27,
    CHAR_DELETE = 127,
};

static int history_max_len = LINENOISE_DEFAULT_HISTORY_MAX_LEN;
static int history_len = 0;
static int history_index = 0;
static char **history = NULL;

/* Structure to contain the status of the current (being edited) line */
struct current {
    stringbuf *buf; /* Current buffer. Always null terminated */
    int pos;    /* Cursor position, measured in chars */
    int cols;   /* Size of the window, in chars */
    int nrows;  /* How many rows are being used in multiline mode (>= 1) */
    int rpos;   /* The current row containing the cursor - multiline mode only */
    int colsright; /* refreshLine() cached cols for insert_char() optimisation */
    int colsleft;  /* refreshLine() cached cols for remove_char() optimisation */
    const char *prompt;
    stringbuf *capture; /* capture buffer, or NULL for none. Always null terminated */
    stringbuf *output;  /* used only during refreshLine() - output accumulator */
#if defined(USE_TERMIOS)
    int fd;     /* Terminal fd */
#elif defined(USE_WINCONSOLE)
    HANDLE outh; /* Console output handle */
    HANDLE inh; /* Console input handle */
    int rows;   /* Screen rows */
    int x;      /* Current column during output */
    int y;      /* Current row */
#ifdef USE_UTF8
    #define UBUF_MAX_CHARS 132
    WORD ubuf[UBUF_MAX_CHARS + 1];  /* Accumulates utf16 output - one extra for final surrogate pairs */
    int ubuflen;      /* length used in ubuf */
    int ubufcols;     /* how many columns are represented by the chars in ubuf? */
#endif
#endif
};

static int fd_read(struct current *current);
static int getWindowSize(struct current *current);
static void cursorDown(struct current *current, int n);
static void cursorUp(struct current *current, int n);
static void eraseEol(struct current *current);
static void refreshLine(struct current *current);
static void refreshLineAlt(struct current *current, const char *prompt, const char *buf, int cursor_pos);
static void setCursorPos(struct current *current, int x);
static void setOutputHighlight(struct current *current, const int *props, int nprops);
static void set_current(struct current *current, const char *str);

static int fd_isatty(struct current *current)
{
#ifdef USE_TERMIOS
    return isatty(current->fd);
#else
    (void)current;
    return 0;
#endif
}

void linenoiseHistoryFree(void) {
    if (history) {
        int j;

        for (j = 0; j < history_len; j++)
            free(history[j]);
        free(history);
        history = NULL;
        history_len = 0;
    }
}

typedef enum {
    EP_START,   /* looking for ESC */
    EP_ESC,     /* looking for [ */
    EP_DIGITS,  /* parsing digits */
    EP_PROPS,   /* parsing digits or semicolons */
    EP_END,     /* ok */
    EP_ERROR,   /* error */
} ep_state_t;

struct esc_parser {
    ep_state_t state;
    int props[5];   /* properties are stored here */
    int maxprops;   /* size of the props[] array */
    int numprops;   /* number of properties found */
    int termchar;   /* terminator char, or 0 for any alpha */
    int current;    /* current (partial) property value */
};

/**
 * Initialise the escape sequence parser at *parser.
 *
 * If termchar is 0 any alpha char terminates ok. Otherwise only the given
 * char terminates successfully.
 * Run the parser state machine with calls to parseEscapeSequence() for each char.
 */
static void initParseEscapeSeq(struct esc_parser *parser, int termchar)
{
    parser->state = EP_START;
    parser->maxprops = sizeof(parser->props) / sizeof(*parser->props);
    parser->numprops = 0;
    parser->current = 0;
    parser->termchar = termchar;
}

/**
 * Pass character 'ch' into the state machine to parse:
 *   'ESC' '[' <digits> (';' <digits>)* <termchar>
 *
 * The first character must be ESC.
 * Returns the current state. The state machine is done when it returns either EP_END
 * or EP_ERROR.
 *
 * On EP_END, the "property/attribute" values can be read from parser->props[]
 * of length parser->numprops.
 */
static int parseEscapeSequence(struct esc_parser *parser, int ch)
{
    switch (parser->state) {
        case EP_START:
            parser->state = (ch == '\x1b') ? EP_ESC : EP_ERROR;
            break;
        case EP_ESC:
            parser->state = (ch == '[') ? EP_DIGITS : EP_ERROR;
            break;
        case EP_PROPS:
            if (ch == ';') {
                parser->state = EP_DIGITS;
donedigits:
                if (parser->numprops + 1 < parser->maxprops) {
                    parser->props[parser->numprops++] = parser->current;
                    parser->current = 0;
                }
                break;
            }
            /* fall through */
        case EP_DIGITS:
            if (ch >= '0' && ch <= '9') {
                parser->current = parser->current * 10 + (ch - '0');
                parser->state = EP_PROPS;
                break;
            }
            /* must be terminator */
            if (parser->termchar != ch) {
                if (parser->termchar != 0 || !((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'))) {
                    parser->state = EP_ERROR;
                    break;
                }
            }
            parser->state = EP_END;
            goto donedigits;
        case EP_END:
            parser->state = EP_ERROR;
            break;
        case EP_ERROR:
            break;
    }
    return parser->state;
}

/*#define DEBUG_REFRESHLINE*/

#ifdef DEBUG_REFRESHLINE
#define DRL(ARGS...) fprintf(dfh, ARGS)
static FILE *dfh;

static void DRL_CHAR(int ch)
{
    if (ch < ' ') {
        DRL("^%c", ch + '@');
    }
    else if (ch > 127) {
        DRL("\\u%04x", ch);
    }
    else {
        DRL("%c", ch);
    }
}
static void DRL_STR(const char *str)
{
    while (*str) {
        int ch;
        int n = utf8_tounicode(str, &ch);
        str += n;
        DRL_CHAR(ch);
    }
}
#else
#define DRL(...)
#define DRL_CHAR(ch)
#define DRL_STR(str)
#endif

#if defined(USE_WINCONSOLE)
#include "linenoise-win32.c"
#endif

#if defined(USE_TERMIOS)
static void linenoiseAtExit(void);
static struct termios orig_termios; /* in order to restore at exit */
static int rawmode = 0; /* for atexit() function to check if restore is needed*/
static int atexit_registered = 0; /* register atexit just 1 time */

static const char *unsupported_term[] = {"dumb","cons25","emacs",NULL};

static int isUnsupportedTerm(void) {
    char *term = getenv("TERM");

    if (term) {
        int j;
        for (j = 0; unsupported_term[j]; j++) {
            if (strcmp(term, unsupported_term[j]) == 0) {
                return 1;
            }
        }
    }
    return 0;
}

static int enableRawMode(struct current *current) {
    struct termios raw;

    current->fd = STDIN_FILENO;
    current->cols = 0;

    if (!isatty(current->fd) || isUnsupportedTerm() ||
        tcgetattr(current->fd, &orig_termios) == -1) {
fatal:
        errno = ENOTTY;
        return -1;
    }

    if (!atexit_registered) {
        atexit(linenoiseAtExit);
        atexit_registered = 1;
    }

    raw = orig_termios;  /* modify the original mode */
    /* input modes: no break, no CR to NL, no parity check, no strip char,
     * no start/stop output control. */
    raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
    /* output modes - actually, no need to disable post processing */
    /*raw.c_oflag &= ~(OPOST);*/
    /* control modes - set 8 bit chars */
    raw.c_cflag |= (CS8);
    /* local modes - choing off, canonical off, no extended functions,
     * no signal chars (^Z,^C) */
    raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
    /* control chars - set return condition: min number of bytes and timer.
     * We want read to return every single byte, without timeout. */
    raw.c_cc[VMIN] = 1; raw.c_cc[VTIME] = 0; /* 1 byte, no timer */

    /* put terminal in raw mode after flushing */
    if (tcsetattr(current->fd,TCSADRAIN,&raw) < 0) {
        goto fatal;
    }
    rawmode = 1;
    return 0;
}

static void disableRawMode(struct current *current) {
    /* Don't even check the return value as it's too late. */
    if (rawmode && tcsetattr(current->fd,TCSADRAIN,&orig_termios) != -1)
        rawmode = 0;
}

/* At exit we'll try to fix the terminal to the initial conditions. */
static void linenoiseAtExit(void) {
    if (rawmode) {
        tcsetattr(STDIN_FILENO, TCSADRAIN, &orig_termios);
    }
    linenoiseHistoryFree();
}

/* gcc/glibc insists that we care about the return code of write!
 * Clarification: This means that a void-cast like "(void) (EXPR)"
 * does not work.
 */
#define IGNORE_RC(EXPR) if (EXPR) {}

/**
 * Output bytes directly, or accumulate output (if current->output is set)
 */
static void outputChars(struct current *current, const char *buf, int len)
{
    if (len < 0) {
        len = strlen(buf);
    }
    if (current->output) {
        sb_append_len(current->output, buf, len);
    }
    else {
        IGNORE_RC(write(current->fd, buf, len));
    }
}

/* Like outputChars, but using printf-style formatting
 */
static void outputFormatted(struct current *current, const char *format, ...)
{
    va_list args;
    char buf[64];
    int n;

    va_start(args, format);
    n = vsnprintf(buf, sizeof(buf), format, args);
    /* This will never happen because we are sure to use outputFormatted() only for short sequences */
    assert(n < (int)sizeof(buf));
    va_end(args);
    outputChars(current, buf, n);
}

static void cursorToLeft(struct current *current)
{
    outputChars(current, "\r", -1);
}

static void setOutputHighlight(struct current *current, const int *props, int nprops)
{
    outputChars(current, "\x1b[", -1);
    while (nprops--) {
        outputFormatted(current, "%d%c", *props, (nprops == 0) ? 'm' : ';');
        props++;
    }
}

static void eraseEol(struct current *current)
{
    outputChars(current, "\x1b[0K", -1);
}

static void setCursorPos(struct current *current, int x)
{
    if (x == 0) {
        cursorToLeft(current);
    }
    else {
        outputFormatted(current, "\r\x1b[%dC", x);
    }
}

static void cursorUp(struct current *current, int n)
{
    if (n) {
        outputFormatted(current, "\x1b[%dA", n);
    }
}

static void cursorDown(struct current *current, int n)
{
    if (n) {
        outputFormatted(current, "\x1b[%dB", n);
    }
}

void linenoiseClearScreen(void)
{
    IGNORE_RC(write(STDOUT_FILENO, "\x1b[H\x1b[2J", 7));
}

/**
 * Reads a char from 'fd', waiting at most 'timeout' milliseconds.
 *
 * A timeout of -1 means to wait forever.
 *
 * Returns -1 if no char is received within the time or an error occurs.
 */
static int fd_read_char(int fd, int timeout)
{
    struct pollfd p;
    unsigned char c;

    p.fd = fd;
    p.events = POLLIN;

    if (poll(&p, 1, timeout) == 0) {
        /* timeout */
        return -1;
    }
    if (read(fd, &c, 1) != 1) {
        return -1;
    }
    return c;
}

/**
 * Reads a complete utf-8 character
 * and returns the unicode value, or -1 on error.
 */
static int fd_read(struct current *current)
{
#ifdef USE_UTF8
    char buf[MAX_UTF8_LEN];
    int n;
    int i;
    int c;

    if (read(current->fd, &buf[0], 1) != 1) {
        return -1;
    }
    n = utf8_charlen(buf[0]);
    if (n < 1) {
        return -1;
    }
    for (i = 1; i < n; i++) {
        if (read(current->fd, &buf[i], 1) != 1) {
            return -1;
        }
    }
    /* decode and return the character */
    utf8_tounicode(buf, &c);
    return c;
#else
    return fd_read_char(current->fd, -1);
#endif
}


/**
 * Stores the current cursor column in '*cols'.
 * Returns 1 if OK, or 0 if failed to determine cursor pos.
 */
static int queryCursor(struct current *current, int* cols)
{
    struct esc_parser parser;
    int ch;

    /* Should not be buffering this output, it needs to go immediately */
    assert(current->output == NULL);

    /* control sequence - report cursor location */
    outputChars(current, "\x1b[6n", -1);

    /* Parse the response: ESC [ rows ; cols R */
    initParseEscapeSeq(&parser, 'R');
    while ((ch = fd_read_char(current->fd, 100)) > 0) {
        switch (parseEscapeSequence(&parser, ch)) {
            default:
                continue;
            case EP_END:
                if (parser.numprops == 2 && parser.props[1] < 1000) {
                    *cols = parser.props[1];
                    return 1;
                }
                break;
            case EP_ERROR:
                break;
        }
        /* failed */
        break;
    }
    return 0;
}

/**
 * Updates current->cols with the current window size (width)
 */
static int getWindowSize(struct current *current)
{
    struct winsize ws;

    if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == 0 && ws.ws_col != 0) {
        current->cols = ws.ws_col;
        return 0;
    }

    /* Failed to query the window size. Perhaps we are on a serial terminal.
     * Try to query the width by sending the cursor as far to the right
     * and reading back the cursor position.
     * Note that this is only done once per call to linenoise rather than
     * every time the line is refreshed for efficiency reasons.
     *
     * In more detail, we:
     * (a) request current cursor position,
     * (b) move cursor far right,
     * (c) request cursor position again,
     * (d) at last move back to the old position.
     * This gives us the width without messing with the externally
     * visible cursor position.
     */

    if (current->cols == 0) {
        int here;

        /* If anything fails => default 80 */
        current->cols = 80;

        /* (a) */
        if (queryCursor (current, &here)) {
            /* (b) */
            setCursorPos(current, 999);

            /* (c). Note: If (a) succeeded, then (c) should as well.
             * For paranoia we still check and have a fallback action
             * for (d) in case of failure..
             */
            if (queryCursor (current, &current->cols)) {
                /* (d) Reset the cursor back to the original location. */
                if (current->cols > here) {
                    setCursorPos(current, here);
                }
            }
        }
    }

    return 0;
}

/**
 * If CHAR_ESCAPE was received, reads subsequent
 * chars to determine if this is a known special key.
 *
 * Returns SPECIAL_NONE if unrecognised, or -1 if EOF.
 *
 * If no additional char is received within a short time,
 * CHAR_ESCAPE is returned.
 */
static int check_special(int fd)
{
    int c = fd_read_char(fd, 50);
    int c2;

    if (c < 0) {
        return CHAR_ESCAPE;
    }
    else if (c >= 'a' && c <= 'z') {
        /* esc-a => meta-a */
        return meta(c);
    }

    c2 = fd_read_char(fd, 50);
    if (c2 < 0) {
        return c2;
    }
    if (c == '[' || c == 'O') {
        /* Potential arrow key */
        switch (c2) {
            case 'A':
                return SPECIAL_UP;
            case 'B':
                return SPECIAL_DOWN;
            case 'C':
                return SPECIAL_RIGHT;
            case 'D':
                return SPECIAL_LEFT;
            case 'F':
                return SPECIAL_END;
            case 'H':
                return SPECIAL_HOME;
        }
    }
    if (c == '[' && c2 >= '1' && c2 <= '8') {
        /* extended escape */
        c = fd_read_char(fd, 50);
        if (c == '~') {
            switch (c2) {
                case '2':
                    return SPECIAL_INSERT;
                case '3':
                    return SPECIAL_DELETE;
                case '5':
                    return SPECIAL_PAGE_UP;
                case '6':
                    return SPECIAL_PAGE_DOWN;
                case '7':
                    return SPECIAL_HOME;
                case '8':
                    return SPECIAL_END;
            }
        }
        while (c != -1 && c != '~') {
            /* .e.g \e[12~ or '\e[11;2~   discard the complete sequence */
            c = fd_read_char(fd, 50);
        }
    }

    return SPECIAL_NONE;
}
#endif

static void clearOutputHighlight(struct current *current)
{
    int nohighlight = 0;
    setOutputHighlight(current, &nohighlight, 1);
}

static void outputControlChar(struct current *current, char ch)
{
    int reverse = 7;
    setOutputHighlight(current, &reverse, 1);
    outputChars(current, "^", 1);
    outputChars(current, &ch, 1);
    clearOutputHighlight(current);
}

#ifndef utf8_getchars
static int utf8_getchars(char *buf, int c)
{
#ifdef USE_UTF8
    return utf8_fromunicode(buf, c);
#else
    *buf = c;
    return 1;
#endif
}
#endif

/**
 * Returns the unicode character at the given offset,
 * or -1 if none.
 */
static int get_char(struct current *current, int pos)
{
    if (pos >= 0 && pos < sb_chars(current->buf)) {
        int c;
        int i = utf8_index(sb_str(current->buf), pos);
        (void)utf8_tounicode(sb_str(current->buf) + i, &c);
        return c;
    }
    return -1;
}

static int char_display_width(int ch)
{
    if (ch < ' ') {
        /* control chars take two positions */
        return 2;
    }
    else {
        return utf8_width(ch);
    }
}

#ifndef NO_COMPLETION
static linenoiseCompletionCallback *completionCallback = NULL;
static void *completionUserdata = NULL;
static int showhints = 1;
static linenoiseHintsCallback *hintsCallback = NULL;
static linenoiseFreeHintsCallback *freeHintsCallback = NULL;
static void *hintsUserdata = NULL;

static void beep(void) {
#ifdef USE_TERMIOS
    fprintf(stderr, "\x7");
    fflush(stderr);
#endif
}

static void freeCompletions(linenoiseCompletions *lc) {
    size_t i;
    for (i = 0; i < lc->len; i++)
        free(lc->cvec[i]);
    free(lc->cvec);
}

static int completeLine(struct current *current) {
    linenoiseCompletions lc = { 0, NULL };
    int c = 0;

    completionCallback(sb_str(current->buf),&lc,completionUserdata);
    if (lc.len == 0) {
        beep();
    } else {
        size_t stop = 0, i = 0;

        while(!stop) {
            /* Show completion or original buffer */
            if (i < lc.len) {
                int chars = utf8_strlen(lc.cvec[i], -1);
                refreshLineAlt(current, current->prompt, lc.cvec[i], chars);
            } else {
                refreshLine(current);
            }

            c = fd_read(current);
            if (c == -1) {
                break;
            }

            switch(c) {
                case '\t': /* tab */
                    i = (i+1) % (lc.len+1);
                    if (i == lc.len) beep();
                    break;
                case CHAR_ESCAPE: /* escape */
                    /* Re-show original buffer */
                    if (i < lc.len) {
                        refreshLine(current);
                    }
                    stop = 1;
                    break;
                default:
                    /* Update buffer and return */
                    if (i < lc.len) {
                        set_current(current,lc.cvec[i]);
                    }
                    stop = 1;
                    break;
            }
        }
    }

    freeCompletions(&lc);
    return c; /* Return last read character */
}

/* Register a callback function to be called for tab-completion.
   Returns the prior callback so that the caller may (if needed)
   restore it when done. */
linenoiseCompletionCallback * linenoiseSetCompletionCallback(linenoiseCompletionCallback *fn, void *userdata) {
    linenoiseCompletionCallback * old = completionCallback;
    completionCallback = fn;
    completionUserdata = userdata;
    return old;
}

void linenoiseAddCompletion(linenoiseCompletions *lc, const char *str) {
    lc->cvec = (char **)realloc(lc->cvec,sizeof(char*)*(lc->len+1));
    lc->cvec[lc->len++] = strdup(str);
}

void linenoiseSetHintsCallback(linenoiseHintsCallback *callback, void *userdata)
{
    hintsCallback = callback;
    hintsUserdata = userdata;
}

void linenoiseSetFreeHintsCallback(linenoiseFreeHintsCallback *callback)
{
    freeHintsCallback = callback;
}

#endif


static const char *reduceSingleBuf(const char *buf, int availcols, int *cursor_pos)
{
    /* We have availcols columns available.
     * If necessary, strip chars off the front of buf until *cursor_pos
     * fits within availcols
     */
    int needcols = 0;
    int pos = 0;
    int new_cursor_pos = *cursor_pos;
    const char *pt = buf;

    DRL("reduceSingleBuf: availcols=%d, cursor_pos=%d\n", availcols, *cursor_pos);

    while (*pt) {
        int ch;
        int n = utf8_tounicode(pt, &ch);
        pt += n;

        needcols += char_display_width(ch);

        /* If we need too many cols, strip
         * chars off the front of buf to make it fit.
         * We keep 3 extra cols to the right of the cursor.
         * 2 for possible wide chars, 1 for the last column that
         * can't be used.
         */
        while (needcols >= availcols - 3) {
            n = utf8_tounicode(buf, &ch);
            buf += n;
            needcols -= char_display_width(ch);
            DRL_CHAR(ch);

            /* and adjust the apparent cursor position */
            new_cursor_pos--;

            if (buf == pt) {
                /* can't remove more than this */
                break;
            }
        }

        if (pos++ == *cursor_pos) {
            break;
        }

    }
    DRL("<snip>");
    DRL_STR(buf);
    DRL("\nafter reduce, needcols=%d, new_cursor_pos=%d\n", needcols, new_cursor_pos);

    /* Done, now new_cursor_pos contains the adjusted cursor position
     * and buf points to he adjusted start
     */
    *cursor_pos = new_cursor_pos;
    return buf;
}

static int mlmode = 0;

void linenoiseSetMultiLine(int enableml)
{
    mlmode = enableml;
}

/* Helper of refreshSingleLine() and refreshMultiLine() to show hints
 * to the right of the prompt.
 * Returns 1 if a hint was shown, or 0 if not
 * If 'display' is 0, does no output. Just returns the appropriate return code.
 */
static int refreshShowHints(struct current *current, const char *buf, int availcols, int display)
{
    int rc = 0;
    if (showhints && hintsCallback && availcols > 0) {
        int bold = 0;
        int color = -1;
        char *hint = hintsCallback(buf, &color, &bold, hintsUserdata);
        if (hint) {
            rc = 1;
            if (display) {
                const char *pt;
                if (bold == 1 && color == -1) color = 37;
                if (bold || color > 0) {
                    int props[3] = { bold, color, 49 }; /* bold, color, fgnormal */
                    setOutputHighlight(current, props, 3);
                }
                DRL("<hint bold=%d,color=%d>", bold, color);
                pt = hint;
                while (*pt) {
                    int ch;
                    int n = utf8_tounicode(pt, &ch);
                    int width = char_display_width(ch);

                    if (width >= availcols) {
                        DRL("<hinteol>");
                        break;
                    }
                    DRL_CHAR(ch);

                    availcols -= width;
                    outputChars(current, pt, n);
                    pt += n;
                }
                if (bold || color > 0) {
                    clearOutputHighlight(current);
                }
                /* Call the function to free the hint returned. */
                if (freeHintsCallback) freeHintsCallback(hint, hintsUserdata);
            }
        }
    }
    return rc;
}

#ifdef USE_TERMIOS
static void refreshStart(struct current *current)
{
    /* We accumulate all output here */
    assert(current->output == NULL);
    current->output = sb_alloc();
}

static void refreshEnd(struct current *current)
{
    /* Output everything at once */
    IGNORE_RC(write(current->fd, sb_str(current->output), sb_len(current->output)));
    sb_free(current->output);
    current->output = NULL;
}

static void refreshStartChars(struct current *current)
{
    (void)current;
}

static void refreshNewline(struct current *current)
{
    DRL("<nl>");
    outputChars(current, "\n", 1);
}

static void refreshEndChars(struct current *current)
{
    (void)current;
}
#endif

static void refreshLineAlt(struct current *current, const char *prompt, const char *buf, int cursor_pos)
{
    int i;
    const char *pt;
    int displaycol;
    int displayrow;
    int visible;
    int currentpos;
    int notecursor;
    int cursorcol = 0;
    int cursorrow = 0;
    int hint;
    struct esc_parser parser;

#ifdef DEBUG_REFRESHLINE
    dfh = fopen("linenoise.debuglog", "a");
#endif

    /* Should intercept SIGWINCH. For now, just get the size every time */
    getWindowSize(current);

    refreshStart(current);

    DRL("wincols=%d, cursor_pos=%d, nrows=%d, rpos=%d\n", current->cols, cursor_pos, current->nrows, current->rpos);

    /* Here is the plan:
     * (a) move the the bottom row, going down the appropriate number of lines
     * (b) move to beginning of line and erase the current line
     * (c) go up one line and do the same, until we have erased up to the first row
     * (d) output the prompt, counting cols and rows, taking into account escape sequences
     * (e) output the buffer, counting cols and rows
     *   (e') when we hit the current pos, save the cursor position
     * (f) move the cursor to the saved cursor position
     * (g) save the current cursor row and number of rows
     */

    /* (a) - The cursor is currently at row rpos */
    cursorDown(current, current->nrows - current->rpos - 1);
    DRL("<cud=%d>", current->nrows - current->rpos - 1);

    /* (b), (c) - Erase lines upwards until we get to the first row */
    for (i = 0; i < current->nrows; i++) {
        if (i) {
            DRL("<cup>");
            cursorUp(current, 1);
        }
        DRL("<clearline>");
        cursorToLeft(current);
        eraseEol(current);
    }
    DRL("\n");

    /* (d) First output the prompt. control sequences don't take up display space */
    pt = prompt;
    displaycol = 0; /* current display column */
    displayrow = 0; /* current display row */
    visible = 1;

    refreshStartChars(current);

    while (*pt) {
        int width;
        int ch;
        int n = utf8_tounicode(pt, &ch);

        if (visible && ch == CHAR_ESCAPE) {
            /* The start of an escape sequence, so not visible */
            visible = 0;
            initParseEscapeSeq(&parser, 'm');
            DRL("<esc-seq-start>");
        }

        if (ch == '\n' || ch == '\r') {
            /* treat both CR and NL the same and force wrap */
            refreshNewline(current);
            displaycol = 0;
            displayrow++;
        }
        else {
            width = visible * utf8_width(ch);

            displaycol += width;
            if (displaycol >= current->cols) {
                /* need to wrap to the next line because of newline or if it doesn't fit
                 * XXX this is a problem in single line mode
                 */
                refreshNewline(current);
                displaycol = width;
                displayrow++;
            }

            DRL_CHAR(ch);
#ifdef USE_WINCONSOLE
            if (visible) {
                outputChars(current, pt, n);
            }
#else
            outputChars(current, pt, n);
#endif
        }
        pt += n;

        if (!visible) {
            switch (parseEscapeSequence(&parser, ch)) {
                case EP_END:
                    visible = 1;
                    setOutputHighlight(current, parser.props, parser.numprops);
                    DRL("<esc-seq-end,numprops=%d>", parser.numprops);
                    break;
                case EP_ERROR:
                    DRL("<esc-seq-err>");
                    visible = 1;
                    break;
            }
        }
    }

    /* Now we are at the first line with all lines erased */
    DRL("\nafter prompt: displaycol=%d, displayrow=%d\n", displaycol, displayrow);


    /* (e) output the buffer, counting cols and rows */
    if (mlmode == 0) {
        /* In this mode we may need to trim chars from the start of the buffer until the
         * cursor fits in the window.
         */
        pt = reduceSingleBuf(buf, current->cols - displaycol, &cursor_pos);
    }
    else {
        pt = buf;
    }

    currentpos = 0;
    notecursor = -1;

    while (*pt) {
        int ch;
        int n = utf8_tounicode(pt, &ch);
        int width = char_display_width(ch);

        if (currentpos == cursor_pos) {
            /* (e') wherever we output this character is where we want the cursor */
            notecursor = 1;
        }

        if (displaycol + width >= current->cols) {
            if (mlmode == 0) {
                /* In single line mode stop once we print as much as we can on one line */
                DRL("<slmode>");
                break;
            }
            /* need to wrap to the next line since it doesn't fit */
            refreshNewline(current);
            displaycol = 0;
            displayrow++;
        }

        if (notecursor == 1) {
            /* (e') Save this position as the current cursor position */
            cursorcol = displaycol;
            cursorrow = displayrow;
            notecursor = 0;
            DRL("<cursor>");
        }

        displaycol += width;

        if (ch < ' ') {
            outputControlChar(current, ch + '@');
        }
        else {
            outputChars(current, pt, n);
        }
        DRL_CHAR(ch);
        if (width != 1) {
            DRL("<w=%d>", width);
        }

        pt += n;
        currentpos++;
    }

    /* If we didn't see the cursor, it is at the current location */
    if (notecursor) {
        DRL("<cursor>");
        cursorcol = displaycol;
        cursorrow = displayrow;
    }

    DRL("\nafter buf: displaycol=%d, displayrow=%d, cursorcol=%d, cursorrow=%d\n", displaycol, displayrow, cursorcol, cursorrow);

    /* (f) show hints */
    hint = refreshShowHints(current, buf, current->cols - displaycol, 1);

    /* Remember how many many cols are available for insert optimisation */
    if (prompt == current->prompt && hint == 0) {
        current->colsright = current->cols - displaycol;
        current->colsleft = displaycol;
    }
    else {
        /* Can't optimise */
        current->colsright = 0;
        current->colsleft = 0;
    }
    DRL("\nafter hints: colsleft=%d, colsright=%d\n\n", current->colsleft, current->colsright);

    refreshEndChars(current);

    /* (g) move the cursor to the correct place */
    cursorUp(current, displayrow - cursorrow);
    setCursorPos(current, cursorcol);

    /* (h) Update the number of rows if larger, but never reduce this */
    if (displayrow >= current->nrows) {
        current->nrows = displayrow + 1;
    }
    /* And remember the row that the cursor is on */
    current->rpos = cursorrow;

    refreshEnd(current);

#ifdef DEBUG_REFRESHLINE
    fclose(dfh);
#endif
}

static void refreshLine(struct current *current)
{
    refreshLineAlt(current, current->prompt, sb_str(current->buf), current->pos);
}

static void set_current(struct current *current, const char *str)
{
    sb_clear(current->buf);
    sb_append(current->buf, str);
    current->pos = sb_chars(current->buf);
}

/**
 * Removes the char at 'pos'.
 *
 * Returns 1 if the line needs to be refreshed, 2 if not
 * and 0 if nothing was removed
 */
static int remove_char(struct current *current, int pos)
{
    if (pos >= 0 && pos < sb_chars(current->buf)) {
        int offset = utf8_index(sb_str(current->buf), pos);
        int nbytes = utf8_index(sb_str(current->buf) + offset, 1);
        int rc = 1;

        /* Now we try to optimise in the simple but very common case that:
         * - outputChars() can be used directly (not win32)
         * - we are removing the char at EOL
         * - the buffer is not empty
         * - there are columns available to the left
         * - the char being deleted is not a wide or utf-8 character
         * - no hints are being shown
         */
        if (current->output && current->pos == pos + 1 && current->pos == sb_chars(current->buf) && pos > 0) {
#ifdef USE_UTF8
            /* Could implement utf8_prev_len() but simplest just to not optimise this case */
            char last = sb_str(current->buf)[offset];
#else
            char last = 0;
#endif
            if (current->colsleft > 0 && (last & 0x80) == 0) {
                /* Have cols on the left and not a UTF-8 char or continuation */
                /* Yes, can optimise */
                current->colsleft--;
                current->colsright++;
                rc = 2;
            }
        }

        sb_delete(current->buf, offset, nbytes);

        if (current->pos > pos) {
            current->pos--;
        }
        if (rc == 2) {
            if (refreshShowHints(current, sb_str(current->buf), current->colsright, 0)) {
                /* A hint needs to be shown, so can't optimise after all */
                rc = 1;
            }
            else {
                /* optimised output */
                outputChars(current, "\b \b", 3);
            }
        }
        return rc;
        return 1;
    }
    return 0;
}

/**
 * Insert 'ch' at position 'pos'
 *
 * Returns 1 if the line needs to be refreshed, 2 if not
 * and 0 if nothing was inserted (no room)
 */
static int insert_char(struct current *current, int pos, int ch)
{
    if (pos >= 0 && pos <= sb_chars(current->buf)) {
        char buf[MAX_UTF8_LEN + 1];
        int offset = utf8_index(sb_str(current->buf), pos);
        int n = utf8_getchars(buf, ch);
        int rc = 1;

        /* null terminate since sb_insert() requires it */
        buf[n] = 0;

        /* Now we try to optimise in the simple but very common case that:
         * - outputChars() can be used directly (not win32)
         * - we are inserting at EOL
         * - there are enough columns available
         * - no hints are being shown
         */
        if (current->output && pos == current->pos && pos == sb_chars(current->buf)) {
            int width = char_display_width(ch);
            if (current->colsright > width) {
                /* Yes, can optimise */
                current->colsright -= width;
                current->colsleft -= width;
                rc = 2;
            }
        }
        sb_insert(current->buf, offset, buf);
        if (current->pos >= pos) {
            current->pos++;
        }
        if (rc == 2) {
            if (refreshShowHints(current, sb_str(current->buf), current->colsright, 0)) {
                /* A hint needs to be shown, so can't optimise after all */
                rc = 1;
            }
            else {
                /* optimised output */
                outputChars(current, buf, n);
            }
        }
        return rc;
    }
    return 0;
}

/**
 * Captures up to 'n' characters starting at 'pos' for the cut buffer.
 *
 * This replaces any existing characters in the cut buffer.
 */
static void capture_chars(struct current *current, int pos, int nchars)
{
    if (pos >= 0 && (pos + nchars - 1) < sb_chars(current->buf)) {
        int offset = utf8_index(sb_str(current->buf), pos);
        int nbytes = utf8_index(sb_str(current->buf) + offset, nchars);

        if (nbytes > 0) {
            if (current->capture) {
                sb_clear(current->capture);
            }
            else {
                current->capture = sb_alloc();
            }
            sb_append_len(current->capture, sb_str(current->buf) + offset, nbytes);
        }
    }
}

/**
 * Removes up to 'n' characters at cursor position 'pos'.
 *
 * Returns 0 if no chars were removed or non-zero otherwise.
 */
static int remove_chars(struct current *current, int pos, int n)
{
    int removed = 0;

    /* First save any chars which will be removed */
    capture_chars(current, pos, n);

    while (n-- && remove_char(current, pos)) {
        removed++;
    }
    return removed;
}
/**
 * Inserts the characters (string) 'chars' at the cursor position 'pos'.
 *
 * Returns 0 if no chars were inserted or non-zero otherwise.
 */
static int insert_chars(struct current *current, int pos, const char *chars)
{
    int inserted = 0;

    while (*chars) {
        int ch;
        int n = utf8_tounicode(chars, &ch);
        if (insert_char(current, pos, ch) == 0) {
            break;
        }
        inserted++;
        pos++;
        chars += n;
    }
    return inserted;
}

static int skip_space_nonspace(struct current *current, int dir, int check_is_space)
{
    int moved = 0;
    int checkoffset = (dir < 0) ? -1 : 0;
    int limit = (dir < 0) ? 0 : sb_chars(current->buf);
    while (current->pos != limit && (get_char(current, current->pos + checkoffset) == ' ') == check_is_space) {
        current->pos += dir;
        moved++;
    }
    return moved;
}

static int skip_space(struct current *current, int dir)
{
    return skip_space_nonspace(current, dir, 1);
}

static int skip_nonspace(struct current *current, int dir)
{
    return skip_space_nonspace(current, dir, 0);
}

static void set_history_index(struct current *current, int new_index)
{
    if (history_len > 1) {
        /* Update the current history entry before to
         * overwrite it with the next one. */
        free(history[history_len - 1 - history_index]);
        history[history_len - 1 - history_index] = strdup(sb_str(current->buf));
        /* Show the new entry */
        history_index = new_index;
        if (history_index < 0) {
            history_index = 0;
        } else if (history_index >= history_len) {
            history_index = history_len - 1;
        } else {
            set_current(current, history[history_len - 1 - history_index]);
            refreshLine(current);
        }
    }
}

/**
 * Returns the keycode to process, or 0 if none.
 */
static int reverseIncrementalSearch(struct current *current)
{
    /* Display the reverse-i-search prompt and process chars */
    char rbuf[50];
    char rprompt[80];
    int rchars = 0;
    int rlen = 0;
    int searchpos = history_len - 1;
    int c;

    rbuf[0] = 0;
    while (1) {
        int n = 0;
        const char *p = NULL;
        int skipsame = 0;
        int searchdir = -1;

        snprintf(rprompt, sizeof(rprompt), "(reverse-i-search)'%s': ", rbuf);
        refreshLineAlt(current, rprompt, sb_str(current->buf), current->pos);
        c = fd_read(current);
        if (c == ctrl('H') || c == CHAR_DELETE) {
            if (rchars) {
                int p_ind = utf8_index(rbuf, --rchars);
                rbuf[p_ind] = 0;
                rlen = strlen(rbuf);
            }
            continue;
        }
#ifdef USE_TERMIOS
        if (c == CHAR_ESCAPE) {
            c = check_special(current->fd);
        }
#endif
        if (c == ctrl('R')) {
            /* Search for the previous (earlier) match */
            if (searchpos > 0) {
                searchpos--;
            }
            skipsame = 1;
        }
        else if (c == ctrl('S')) {
            /* Search for the next (later) match */
            if (searchpos < history_len) {
                searchpos++;
            }
            searchdir = 1;
            skipsame = 1;
        }
        else if (c == ctrl('P') || c == SPECIAL_UP) {
            /* Exit Ctrl-R mode and go to the previous history line from the current search pos */
            set_history_index(current, history_len - searchpos);
            c = 0;
            break;
        }
        else if (c == ctrl('N') || c == SPECIAL_DOWN) {
            /* Exit Ctrl-R mode and go to the next history line from the current search pos */
            set_history_index(current, history_len - searchpos - 2);
            c = 0;
            break;
        }
        else if (c >= ' ' && c <= '~') {
            /* >= here to allow for null terminator */
            if (rlen >= (int)sizeof(rbuf) - MAX_UTF8_LEN) {
                continue;
            }

            n = utf8_getchars(rbuf + rlen, c);
            rlen += n;
            rchars++;
            rbuf[rlen] = 0;

            /* Adding a new char resets the search location */
            searchpos = history_len - 1;
        }
        else {
            /* Exit from incremental search mode */
            break;
        }

        /* Now search through the history for a match */
        for (; searchpos >= 0 && searchpos < history_len; searchpos += searchdir) {
            p = strstr(history[searchpos], rbuf);
            if (p) {
                /* Found a match */
                if (skipsame && strcmp(history[searchpos], sb_str(current->buf)) == 0) {
                    /* But it is identical, so skip it */
                    continue;
                }
                /* Copy the matching line and set the cursor position */
                history_index = history_len - 1 - searchpos;
                set_current(current,history[searchpos]);
                current->pos = utf8_strlen(history[searchpos], p - history[searchpos]);
                break;
            }
        }
        if (!p && n) {
            /* No match, so don't add it */
            rchars--;
            rlen -= n;
            rbuf[rlen] = 0;
        }
    }
    if (c == ctrl('G') || c == ctrl('C')) {
        /* ctrl-g terminates the search with no effect */
        set_current(current, "");
        history_index = 0;
        c = 0;
    }
    else if (c == ctrl('J')) {
        /* ctrl-j terminates the search leaving the buffer in place */
        history_index = 0;
        c = 0;
    }
    /* Go process the char normally */
    refreshLine(current);
    return c;
}

static int linenoiseEdit(struct current *current) {
    history_index = 0;

    refreshLine(current);

    while(1) {
        int c = fd_read(current);

#ifndef NO_COMPLETION
        /* Only autocomplete when the callback is set. It returns < 0 when
         * there was an error reading from fd. Otherwise it will return the
         * character that should be handled next. */
        if (c == '\t' && current->pos == sb_chars(current->buf) && completionCallback != NULL) {
            c = completeLine(current);
        }
#endif
        if (c == ctrl('R')) {
            /* reverse incremental search will provide an alternative keycode or 0 for none */
            c = reverseIncrementalSearch(current);
            /* go on to process the returned char normally */
        }

#ifdef USE_TERMIOS
        if (c == CHAR_ESCAPE) {   /* escape sequence */
            c = check_special(current->fd);
        }
#endif
        if (c == -1) {
            /* Return on errors */
            return sb_len(current->buf);
        }

        switch(c) {
        case SPECIAL_NONE:
            break;
        case '\r':    /* enter/CR */
        case '\n':    /* LF */
            history_len--;
            free(history[history_len]);
            current->pos = sb_chars(current->buf);
            if (mlmode || hintsCallback) {
                showhints = 0;
                refreshLine(current);
                showhints = 1;
            }
            return sb_len(current->buf);
        case ctrl('C'):     /* ctrl-c */
            errno = EAGAIN;
            return -1;
        case ctrl('Z'):     /* ctrl-z */
#ifdef SIGTSTP
            /* send ourselves SIGSUSP */
            disableRawMode(current);
            raise(SIGTSTP);
            /* and resume */
            enableRawMode(current);
            refreshLine(current);
#endif
            continue;
        case CHAR_DELETE:   /* backspace */
        case ctrl('H'):
            if (remove_char(current, current->pos - 1) == 1) {
                refreshLine(current);
            }
            break;
        case ctrl('D'):     /* ctrl-d */
            if (sb_len(current->buf) == 0) {
                /* Empty line, so EOF */
                history_len--;
                free(history[history_len]);
                return -1;
            }
            /* Otherwise fall through to delete char to right of cursor */
            /* fall-thru */
        case SPECIAL_DELETE:
            if (remove_char(current, current->pos) == 1) {
                refreshLine(current);
            }
            break;
        case SPECIAL_INSERT:
            /* Ignore. Expansion Hook.
             * Future possibility: Toggle Insert/Overwrite Modes
             */
            break;
        case meta('b'):    /* meta-b, move word left */
            if (skip_nonspace(current, -1)) {
                refreshLine(current);
            }
            else if (skip_space(current, -1)) {
                skip_nonspace(current, -1);
                refreshLine(current);
            }
            break;
        case meta('f'):    /* meta-f, move word right */
            if (skip_space(current, 1)) {
                refreshLine(current);
            }
            else if (skip_nonspace(current, 1)) {
                skip_space(current, 1);
                refreshLine(current);
            }
            break;
        case ctrl('W'):    /* ctrl-w, delete word at left. save deleted chars */
            /* eat any spaces on the left */
            {
                int pos = current->pos;
                while (pos > 0 && get_char(current, pos - 1) == ' ') {
                    pos--;
                }

                /* now eat any non-spaces on the left */
                while (pos > 0 && get_char(current, pos - 1) != ' ') {
                    pos--;
                }

                if (remove_chars(current, pos, current->pos - pos)) {
                    refreshLine(current);
                }
            }
            break;
        case ctrl('T'):    /* ctrl-t */
            if (current->pos > 0 && current->pos <= sb_chars(current->buf)) {
                /* If cursor is at end, transpose the previous two chars */
                int fixer = (current->pos == sb_chars(current->buf));
                c = get_char(current, current->pos - fixer);
                remove_char(current, current->pos - fixer);
                insert_char(current, current->pos - 1, c);
                refreshLine(current);
            }
            break;
        case ctrl('V'):    /* ctrl-v */
            /* Insert the ^V first */
            if (insert_char(current, current->pos, c)) {
                refreshLine(current);
                /* Now wait for the next char. Can insert anything except \0 */
                c = fd_read(current);

                /* Remove the ^V first */
                remove_char(current, current->pos - 1);
                if (c > 0) {
                    /* Insert the actual char, can't be error or null */
                    insert_char(current, current->pos, c);
                }
                refreshLine(current);
            }
            break;
        case ctrl('B'):
        case SPECIAL_LEFT:
            if (current->pos > 0) {
                current->pos--;
                refreshLine(current);
            }
            break;
        case ctrl('F'):
        case SPECIAL_RIGHT:
            if (current->pos < sb_chars(current->buf)) {
                current->pos++;
                refreshLine(current);
            }
            break;
        case SPECIAL_PAGE_UP: /* move to start of history */
          set_history_index(current, history_len - 1);
          break;
        case SPECIAL_PAGE_DOWN: /* move to 0 == end of history, i.e. current */
          set_history_index(current, 0);
          break;
        case ctrl('P'):
        case SPECIAL_UP:
            set_history_index(current, history_index + 1);
            break;
        case ctrl('N'):
        case SPECIAL_DOWN:
            set_history_index(current, history_index - 1);
            break;
        case ctrl('A'): /* Ctrl+a, go to the start of the line */
        case SPECIAL_HOME:
            current->pos = 0;
            refreshLine(current);
            break;
        case ctrl('E'): /* ctrl+e, go to the end of the line */
        case SPECIAL_END:
            current->pos = sb_chars(current->buf);
            refreshLine(current);
            break;
        case ctrl('U'): /* Ctrl+u, delete to beginning of line, save deleted chars. */
            if (remove_chars(current, 0, current->pos)) {
                refreshLine(current);
            }
            break;
        case ctrl('K'): /* Ctrl+k, delete from current to end of line, save deleted chars. */
            if (remove_chars(current, current->pos, sb_chars(current->buf) - current->pos)) {
                refreshLine(current);
            }
            break;
        case ctrl('Y'): /* Ctrl+y, insert saved chars at current position */
            if (current->capture && insert_chars(current, current->pos, sb_str(current->capture))) {
                refreshLine(current);
            }
            break;
        case ctrl('L'): /* Ctrl+L, clear screen */
            linenoiseClearScreen();
            /* Force recalc of window size for serial terminals */
            current->cols = 0;
            current->rpos = 0;
            refreshLine(current);
            break;
        default:
            if (c >= meta('a') && c <= meta('z')) {
                /* Don't insert meta chars that are not bound */
                break;
            }
            /* Only tab is allowed without ^V */
            if (c == '\t' || c >= ' ') {
                if (insert_char(current, current->pos, c) == 1) {
                    refreshLine(current);
                }
            }
            break;
        }
    }
    return sb_len(current->buf);
}

int linenoiseColumns(void)
{
    struct current current;
    current.output = NULL;
    enableRawMode (&current);
    getWindowSize (&current);
    disableRawMode (&current);
    return current.cols;
}

/**
 * Reads a line from the file handle (without the trailing NL or CRNL)
 * and returns it in a stringbuf.
 * Returns NULL if no characters are read before EOF or error.
 *
 * Note that the character count will *not* be correct for lines containing
 * utf8 sequences. Do not rely on the character count.
 */
static stringbuf *sb_getline(FILE *fh)
{
    stringbuf *sb = sb_alloc();
    int c;
    int n = 0;

    while ((c = getc(fh)) != EOF) {
        char ch;
        n++;
        if (c == '\r') {
            /* CRLF -> LF */
            continue;
        }
        if (c == '\n' || c == '\r') {
            break;
        }
        ch = c;
        /* ignore the effect of character count for partial utf8 sequences */
        sb_append_len(sb, &ch, 1);
    }
    if (n == 0 || sb->data == NULL) {
        sb_free(sb);
        return NULL;
    }
    return sb;
}

char *linenoiseWithInitial(const char *prompt, const char *initial)
{
    int count;
    struct current current;
    stringbuf *sb;

    memset(&current, 0, sizeof(current));

    if (enableRawMode(&current) == -1) {
        printf("%s", prompt);
        fflush(stdout);
        sb = sb_getline(stdin);
        if (sb && !fd_isatty(&current)) {
            printf("%s\n", sb_str(sb));
            fflush(stdout);
        }
    }
    else {
        current.buf = sb_alloc();
        current.pos = 0;
        current.nrows = 1;
        current.prompt = prompt;

        /* The latest history entry is always our current buffer */
        linenoiseHistoryAdd(initial);
        set_current(&current, initial);

        count = linenoiseEdit(&current);

        disableRawMode(&current);
        printf("\n");

        sb_free(current.capture);
        if (count == -1) {
            sb_free(current.buf);
            return NULL;
        }
        sb = current.buf;
    }
    return sb ? sb_to_string(sb) : NULL;
}

char *linenoise(const char *prompt)
{
    return linenoiseWithInitial(prompt, "");
}

/* Using a circular buffer is smarter, but a bit more complex to handle. */
static int linenoiseHistoryAddAllocated(char *line) {

    if (history_max_len == 0) {
notinserted:
        free(line);
        return 0;
    }
    if (history == NULL) {
        history = (char **)calloc(sizeof(char*), history_max_len);
    }

    /* do not insert duplicate lines into history */
    if (history_len > 0 && strcmp(line, history[history_len - 1]) == 0) {
        goto notinserted;
    }

    if (history_len == history_max_len) {
        free(history[0]);
        memmove(history,history+1,sizeof(char*)*(history_max_len-1));
        history_len--;
    }
    history[history_len] = line;
    history_len++;
    return 1;
}

int linenoiseHistoryAdd(const char *line) {
    return linenoiseHistoryAddAllocated(strdup(line));
}

int linenoiseHistoryGetMaxLen(void) {
    return history_max_len;
}

int linenoiseHistorySetMaxLen(int len) {
    char **newHistory;

    if (len < 1) return 0;
    if (history) {
        int tocopy = history_len;

        newHistory = (char **)calloc(sizeof(char*), len);

        /* If we can't copy everything, free the elements we'll not use. */
        if (len < tocopy) {
            int j;

            for (j = 0; j < tocopy-len; j++) free(history[j]);
            tocopy = len;
        }
        memcpy(newHistory,history+(history_len-tocopy), sizeof(char*)*tocopy);
        free(history);
        history = newHistory;
    }
    history_max_len = len;
    if (history_len > history_max_len)
        history_len = history_max_len;
    return 1;
}

/* Save the history in the specified file. On success 0 is returned
 * otherwise -1 is returned. */
int linenoiseHistorySave(const char *filename) {
    FILE *fp = fopen(filename,"w");
    int j;

    if (fp == NULL) return -1;
    for (j = 0; j < history_len; j++) {
        const char *str = history[j];
        /* Need to encode backslash, nl and cr */
        while (*str) {
            if (*str == '\\') {
                fputs("\\\\", fp);
            }
            else if (*str == '\n') {
                fputs("\\n", fp);
            }
            else if (*str == '\r') {
                fputs("\\r", fp);
            }
            else {
                fputc(*str, fp);
            }
            str++;
        }
        fputc('\n', fp);
    }

    fclose(fp);
    return 0;
}

/* Load the history from the specified file.
 *
 * If the file does not exist or can't be opened, no operation is performed
 * and -1 is returned.
 * Otherwise 0 is returned.
 */
int linenoiseHistoryLoad(const char *filename) {
    FILE *fp = fopen(filename,"r");
    stringbuf *sb;

    if (fp == NULL) return -1;

    while ((sb = sb_getline(fp)) != NULL) {
        /* Take the stringbuf and decode backslash escaped values */
        char *buf = sb_to_string(sb);
        char *dest = buf;
        const char *src;

        for (src = buf; *src; src++) {
            char ch = *src;

            if (ch == '\\') {
                src++;
                if (*src == 'n') {
                    ch = '\n';
                }
                else if (*src == 'r') {
                    ch = '\r';
                } else {
                    ch = *src;
                }
            }
            *dest++ = ch;
        }
        *dest = 0;

        linenoiseHistoryAddAllocated(buf);
    }
    fclose(fp);
    return 0;
}

/* Provide access to the history buffer.
 *
 * If 'len' is not NULL, the length is stored in *len.
 */
char **linenoiseHistory(int *len) {
    if (len) {
        *len = history_len;
    }
    return history;
}
Added extsrc/linenoise.h.





















































































































































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/* linenoise.h -- guerrilla line editing library against the idea that a
 * line editing lib needs to be 20,000 lines of C code.
 *
 * See linenoise.c for more information.
 *
 * ------------------------------------------------------------------------
 *
 * Copyright (c) 2010, Salvatore Sanfilippo <antirez at gmail dot com>
 * Copyright (c) 2010, Pieter Noordhuis <pcnoordhuis at gmail dot com>
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *  *  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *  *  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __LINENOISE_H
#define __LINENOISE_H

#ifdef __cplusplus
extern "C" {
#endif

#ifndef NO_COMPLETION
typedef struct linenoiseCompletions {
  size_t len;
  char **cvec;
} linenoiseCompletions;

/*
 * The callback type for tab completion handlers.
 */
typedef void(linenoiseCompletionCallback)(const char *prefix, linenoiseCompletions *comp, void *userdata);

/*
 * Sets the current tab completion handler and returns the previous one, or NULL
 * if no prior one has been set.
 */
linenoiseCompletionCallback * linenoiseSetCompletionCallback(linenoiseCompletionCallback *comp, void *userdata);

/*
 * Adds a copy of the given string to the given completion list. The copy is owned
 * by the linenoiseCompletions object.
 */
void linenoiseAddCompletion(linenoiseCompletions *comp, const char *str);

typedef char*(linenoiseHintsCallback)(const char *, int *color, int *bold, void *userdata);
typedef void(linenoiseFreeHintsCallback)(void *hint, void *userdata);
void linenoiseSetHintsCallback(linenoiseHintsCallback *callback, void *userdata);
void linenoiseSetFreeHintsCallback(linenoiseFreeHintsCallback *callback);

#endif

/*
 * Prompts for input using the given string as the input
 * prompt. Returns when the user has tapped ENTER or (on an empty
 * line) EOF (Ctrl-D on Unix, Ctrl-Z on Windows). Returns either
 * a copy of the entered string (for ENTER) or NULL (on EOF).  The
 * caller owns the returned string and must eventually free() it.
 */
char *linenoise(const char *prompt);

/**
 * Like linenoise() but starts with an initial buffer.
 */
char *linenoiseWithInitial(const char *prompt, const char *initial);

/**
 * Clear the screen.
 */
void linenoiseClearScreen(void);

/*
 * Adds a copy of the given line of the command history.
 */
int linenoiseHistoryAdd(const char *line);

/*
 * Sets the maximum length of the command history, in lines.
 * If the history is currently longer, it will be trimmed,
 * retaining only the most recent entries. If len is 0 or less
 * then this function does nothing.
 */
int linenoiseHistorySetMaxLen(int len);

/*
 * Returns the current maximum length of the history, in lines.
 */
int linenoiseHistoryGetMaxLen(void);

/*
 * Saves the current contents of the history to the given file.
 * Returns 0 on success.
 */
int linenoiseHistorySave(const char *filename);

/*
 * Replaces the current history with the contents
 * of the given file.  Returns 0 on success.
 */
int linenoiseHistoryLoad(const char *filename);

/*
 * Frees all history entries, clearing the history.
 */
void linenoiseHistoryFree(void);

/*
 * Returns a pointer to the list of history entries, writing its
 * length to *len if len is not NULL. The memory is owned by linenoise
 * and must not be freed.
 */
char **linenoiseHistory(int *len);

/*
 * Returns the number of display columns in the current terminal.
 */
int linenoiseColumns(void);

/**
 * Enable or disable multiline mode (disabled by default)
 */
void linenoiseSetMultiLine(int enableml);

#ifdef __cplusplus
}
#endif

#endif /* __LINENOISE_H */
Added extsrc/pikchr-worker.js.





























































































































































































































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/*
  2022-05-20

  The author disclaims copyright to this source code.  In place of a
  legal notice, here is a blessing:

  *   May you do good and not evil.
  *   May you find forgiveness for yourself and forgive others.
  *   May you share freely, never taking more than you give.

  ***********************************************************************

  This is a JS Worker file for use with the pikchr wasm build. It
  loads the pikchr wasm module and offers access to it via the Worker
  message-passing interface.

  Because we can have only a single message handler, as opposed to an
  arbitrary number of discrete event listeners like with DOM elements,
  we have to define a lower-level message API. Messages abstractly
  look like:

  { type: string, data: type-specific value }

  Where 'type' is used for dispatching and 'data' is a
  'type'-dependent value.

  The 'type' values expected by each side of the main/worker
  connection vary. The types are described below but subject to
  change at any time as this experiment evolves.

  Main-to-Worker message types:

  - pikchr: data=pikchr-format text to render or an object:

  {
    pikchr: source code for the pikchr,
    darkMode: boolean true to adjust colors for a dark color scheme,
    cssClass: CSS class name to add to the SVG
  }

  Workers-to-Main types

  - stdout, stderr: indicate stdout/stderr output from the wasm
  layer. The data property is the string of the output, noting
  that the emscripten binding emits these one line at a time. Thus,
  if a C-side puts() emits multiple lines in a single call, the JS
  side will see that as multiple calls. Example:

  {type:'stdout', data: 'Hi, world.'}

  - module: Status text. This is intended to alert the main thread
  about module loading status so that, e.g., the main thread can
  update a progress widget and DTRT when the module is finished
  loading and available for work. Status messages come in the form
  
  {type:'module', data:{
  type:'status',
  data: {text:string|null, step:1-based-integer}
  }

  with an incrementing step value for each subsequent message. When
  the module loading is complete, a message with a text value of
  null is posted.

  - pikchr: 

  {type: 'pikchr',
    data:{
      pikchr: input text,
      result: rendered result (SVG on success, HTML on error),
      isError: bool, true if .pikchr holds an error report,
      flags: integer: flags used to configure the pikchr rendering,
      width: if !isError, width (integer pixels) of the SVG,
      height: if !isError, height (integer pixels) of the SVG
    }
  }

*/

"use strict";
(function(){
  /**
     Posts a message in the form {type,data} unless passed more than
     2 args, in which case it posts {type, data:[arg1...argN]}.
  */
  const wMsg = function(type,data){
    postMessage({
      type,
      data: arguments.length<3
        ? data
        : Array.prototype.slice.call(arguments,1)
    });
  };

  const stderr = function(){wMsg('stderr', Array.prototype.slice.call(arguments));};

  self.onerror = function(/*message, source, lineno, colno, error*/) {
    const err = arguments[4];
    if(err && 'ExitStatus'==err.name){
      /* This "cannot happen" for this wasm binding, but just in
         case... */
      pikchrModule.isDead = true;
      stderr("FATAL ERROR:", err.message);
      stderr("Restarting the app requires reloading the page.");
      wMsg('error', err);
    }
    pikchrModule.setStatus('Exception thrown, see JavaScript console: '+err);
  };

  self.onmessage = function f(ev){
    ev = ev.data;
    switch(ev.type){
          /**
             Runs the given text through pikchr and emits a 'pikchr'
             message result (output format documented above).

             Fires a working/start event before it starts and
             working/end event when it finishes.
          */
        case 'pikchr':
          if(pikchrModule.isDead){
            stderr("wasm module has exit()ed. Cannot pikchr.");
            return;
          }
          if(!f._){
            f._ = pikchrModule.cwrap('pikchr', 'string', [
              'string'/*script*/, 'string'/*CSS class*/, 'number'/*flags*/,
              'number'/*output: SVG width*/, 'number'/*output: SVG height*/
            ]);
          }
          wMsg('working','start');
          const stack = pikchrModule.stackSave();
          try {
            const pnWidth = pikchrModule.stackAlloc(4),
                  pnHeight = pikchrModule.stackAlloc(4);
            let script = '', flags = 0, cssClass = null;
            if('string'===typeof ev.data){
              script = ev.data;
            }else if(ev.data && 'object'===typeof ev.data){
              script = ev.data.pikchr;
              flags = ev.data.darkMode ? 0x02 : 0;
              if(ev.data.cssClass) cssClass = ev.data.cssClass;
            }
            pikchrModule.setValue(pnWidth, 0, "i32");
            pikchrModule.setValue(pnHeight, 0, "i32");
            const msg = {
              pikchr: script,
              result: (f._(script, cssClass, flags, pnWidth, pnHeight) || "").trim(),
              flags: flags
            };
            msg.isError = !!(msg.result && msg.result.startsWith('<div'));
            if(msg.isError){
              msg.width = msg.height = null;
            }else{
              msg.width = pikchrModule.getValue(pnWidth, "i32");
              msg.height = pikchrModule.getValue(pnHeight, "i32");
            }
            wMsg('pikchr', msg);
          } finally {
            pikchrModule.stackRestore(stack);
            wMsg('working','end');
          }
          return;
    };
    console.warn("Unknown pikchr-worker message type:",ev);
  };
  
  /**
     emscripten module for use with build mode -sMODULARIZE.
  */
  const pikchrModule = {
    print: function(){wMsg('stdout', Array.prototype.slice.call(arguments));},
    printErr: stderr,
    /**
       Intercepts status updates from the emscripting module init
       and fires worker events with a type of 'status' and a
       payload of:

       {
       text: string | null, // null at end of load process
       step: integer // starts at 1, increments 1 per call
       }

       We have no way of knowing in advance how many steps will
       be processed/posted, so creating a "percentage done" view is
       not really practical. One can be approximated by giving it a
       current value of message.step and max value of message.step+1,
       though.

       When work is finished, a message with a text value of null is
       submitted.

       After a message with text==null is posted, the module may later
       post messages about fatal problems, e.g. an exit() being
       triggered, so it is recommended that UI elements for posting
       status messages not be outright removed from the DOM when
       text==null, and that they instead be hidden until/unless
       text!=null.
    */
    setStatus: function f(text){
      if(!f.last) f.last = { step: 0, text: '' };
      else if(text === f.last.text) return;
      f.last.text = text;
      wMsg('module',{
        type:'status',
        data:{step: ++f.last.step, text: text||null}
      });
    }
  };

  importScripts('pikchr.js');
  /**
     initPikchrModule() is installed via pikchr.js due to
     building with:

     emcc ... -sMODULARIZE=1 -sEXPORT_NAME=initPikchrModule
  */
  initPikchrModule(pikchrModule).then(function(thisModule){
    wMsg('pikchr-ready');
  });
})();
Added extsrc/pikchr.c.























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/* This file is automatically generated by Lemon from input grammar
** source file "pikchr.y".
*/
/*
** Zero-Clause BSD license:
**
** Copyright (C) 2020-09-01 by D. Richard Hipp <drh@sqlite.org>
**
** Permission to use, copy, modify, and/or distribute this software for
** any purpose with or without fee is hereby granted.
**
****************************************************************************
**
** This software translates a PIC-inspired diagram language into SVG.
**
** PIKCHR (pronounced like "picture") is *mostly* backwards compatible
** with legacy PIC, though some features of legacy PIC are removed 
** (for example, the "sh" command is removed for security) and
** many enhancements are added.
**
** PIKCHR is designed for use in an internet facing web environment.
** In particular, PIKCHR is designed to safely generate benign SVG from
** source text that provided by a hostile agent. 
**
** This code was originally written by D. Richard Hipp using documentation
** from prior PIC implementations but without reference to prior code.
** All of the code in this project is original.
**
** This file implements a C-language subroutine that accepts a string
** of PIKCHR language text and generates a second string of SVG output that
** renders the drawing defined by the input.  Space to hold the returned
** string is obtained from malloc() and should be freed by the caller.
** NULL might be returned if there is a memory allocation error.
**
** If there are errors in the PIKCHR input, the output will consist of an
** error message and the original PIKCHR input text (inside of <pre>...</pre>).
**
** The subroutine implemented by this file is intended to be stand-alone.
** It uses no external routines other than routines commonly found in
** the standard C library.
**
****************************************************************************
** COMPILING:
**
** The original source text is a mixture of C99 and "Lemon"
** (See https://sqlite.org/src/file/doc/lemon.html).  Lemon is an LALR(1)
** parser generator program, similar to Yacc.  The grammar of the
** input language is specified in Lemon.  C-code is attached.  Lemon
** runs to generate a single output file ("pikchr.c") which is then
** compiled to generate the Pikchr library.  This header comment is
** preserved in the Lemon output, so you might be reading this in either
** the generated "pikchr.c" file that is output by Lemon, or in the
** "pikchr.y" source file that is input into Lemon.  If you make changes,
** you should change the input source file "pikchr.y", not the
** Lemon-generated output file.
**
** Basic compilation steps:
**
**      lemon pikchr.y
**      cc pikchr.c -o pikchr.o
**
** Add -DPIKCHR_SHELL to add a main() routine that reads input files
** and sends them through Pikchr, for testing.  Add -DPIKCHR_FUZZ for
** -fsanitizer=fuzzer testing.
**
****************************************************************************
** IMPLEMENTATION NOTES (for people who want to understand the internal
** operation of this software, perhaps to extend the code or to fix bugs):
**
** Each call to pikchr() uses a single instance of the Pik structure to
** track its internal state.  The Pik structure lives for the duration
** of the pikchr() call.
**
** The input is a sequence of objects or "statements".  Each statement is
** parsed into a PObj object.  These are stored on an extensible array
** called PList.  All parameters to each PObj are computed as the
** object is parsed.  (Hence, the parameters to a PObj may only refer
** to prior statements.) Once the PObj is completely assembled, it is
** added to the end of a PList and never changes thereafter - except,
** PObj objects that are part of a "[...]" block might have their
** absolute position shifted when the outer [...] block is positioned.
** But apart from this repositioning, PObj objects are unchanged once
** they are added to the list. The order of statements on a PList does
** not change.
**
** After all input has been parsed, the top-level PList is walked to
** generate output.  Sub-lists resulting from [...] blocks are scanned
** as they are encountered.  All input must be collected and parsed ahead
** of output generation because the size and position of statements must be
** known in order to compute a bounding box on the output.
**
** Each PObj is on a "layer".  (The common case is that all PObj's are
** on a single layer, but multiple layers are possible.)  A separate pass
** is made through the list for each layer.
**
** After all output is generated, the Pik object and all the PList
** and PObj objects are deallocated and the generated output string is
** returned.  Upon any error, the Pik.nErr flag is set, processing quickly
** stops, and the stack unwinds.  No attempt is made to continue reading
** input after an error.
**
** Most statements begin with a class name like "box" or "arrow" or "move".
** There is a class named "text" which is used for statements that begin
** with a string literal.  You can also specify the "text" class.
** A Sublist ("[...]") is a single object that contains a pointer to
** its substatements, all gathered onto a separate PList object.
**
** Variables go into PVar objects that form a linked list.
**
** Each PObj has zero or one names.  Input constructs that attempt
** to assign a new name from an older name, for example:
**
**      Abc:  Abc + (0.5cm, 0)
**
** Statements like these generate a new "noop" object at the specified
** place and with the given name. As place-names are searched by scanning
** the list in reverse order, this has the effect of overriding the "Abc"
** name when referenced by subsequent objects.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <assert.h>
#define count(X) (sizeof(X)/sizeof(X[0]))
#ifndef M_PI
# define M_PI 3.1415926535897932385
#endif

/* Limit the number of tokens in a single script to avoid run-away
** macro expansion attacks.  See forum post
**    https://pikchr.org/home/forumpost/ef8684c6955a411a
*/
#ifndef PIKCHR_TOKEN_LIMIT
# define PIKCHR_TOKEN_LIMIT 100000
#endif


/* Tag intentionally unused parameters with this macro to prevent
** compiler warnings with -Wextra */
#define UNUSED_PARAMETER(X)  (void)(X)

typedef struct Pik Pik;          /* Complete parsing context */
typedef struct PToken PToken;    /* A single token */
typedef struct PObj PObj;        /* A single diagram object */
typedef struct PList PList;      /* A list of diagram objects */
typedef struct PClass PClass;    /* Description of statements types */
typedef double PNum;             /* Numeric value */
typedef struct PRel PRel;        /* Absolute or percentage value */
typedef struct PPoint PPoint;    /* A position in 2-D space */
typedef struct PVar PVar;        /* script-defined variable */
typedef struct PBox PBox;        /* A bounding box */
typedef struct PMacro PMacro;    /* A "define" macro */

/* Compass points */
#define CP_N      1
#define CP_NE     2
#define CP_E      3
#define CP_SE     4
#define CP_S      5
#define CP_SW     6
#define CP_W      7
#define CP_NW     8
#define CP_C      9   /* .center or .c */
#define CP_END   10   /* .end */
#define CP_START 11   /* .start */

/* Heading angles corresponding to compass points */
static const PNum pik_hdg_angle[] = {
/* none  */   0.0,
  /* N  */    0.0,
  /* NE */   45.0,
  /* E  */   90.0,
  /* SE */  135.0,
  /* S  */  180.0,
  /* SW */  225.0,
  /* W  */  270.0,
  /* NW */  315.0,
  /* C  */    0.0,
};

/* Built-in functions */
#define FN_ABS    0
#define FN_COS    1
#define FN_INT    2
#define FN_MAX    3
#define FN_MIN    4
#define FN_SIN    5
#define FN_SQRT   6

/* Text position and style flags.  Stored in PToken.eCode so limited
** to 15 bits. */
#define TP_LJUST   0x0001  /* left justify......          */
#define TP_RJUST   0x0002  /*            ...Right justify */
#define TP_JMASK   0x0003  /* Mask for justification bits */
#define TP_ABOVE2  0x0004  /* Position text way above PObj.ptAt */
#define TP_ABOVE   0x0008  /* Position text above PObj.ptAt */
#define TP_CENTER  0x0010  /* On the line */
#define TP_BELOW   0x0020  /* Position text below PObj.ptAt */
#define TP_BELOW2  0x0040  /* Position text way below PObj.ptAt */
#define TP_VMASK   0x007c  /* Mask for text positioning flags */
#define TP_BIG     0x0100  /* Larger font */
#define TP_SMALL   0x0200  /* Smaller font */
#define TP_XTRA    0x0400  /* Amplify TP_BIG or TP_SMALL */
#define TP_SZMASK  0x0700  /* Font size mask */
#define TP_ITALIC  0x1000  /* Italic font */
#define TP_BOLD    0x2000  /* Bold font */
#define TP_MONO    0x4000  /* Monospace font family */
#define TP_FMASK   0x7000  /* Mask for font style */
#define TP_ALIGN   0x8000  /* Rotate to align with the line */

/* An object to hold a position in 2-D space */
struct PPoint {
  PNum x, y;             /* X and Y coordinates */
};
static const PPoint cZeroPoint = {0.0,0.0};

/* A bounding box */
struct PBox {
  PPoint sw, ne;         /* Lower-left and top-right corners */
};

/* An Absolute or a relative distance.  The absolute distance
** is stored in rAbs and the relative distance is stored in rRel.
** Usually, one or the other will be 0.0.  When using a PRel to
** update an existing value, the computation is usually something
** like this:
**
**          value = PRel.rAbs + value*PRel.rRel
**
*/
struct PRel {
  PNum rAbs;            /* Absolute value */
  PNum rRel;            /* Value relative to current value */
};

/* A variable created by the ID = EXPR construct of the PIKCHR script 
**
** PIKCHR (and PIC) scripts do not use many varaibles, so it is reasonable
** to store them all on a linked list.
*/
struct PVar {
  const char *zName;       /* Name of the variable */
  PNum val;                /* Value of the variable */
  PVar *pNext;             /* Next variable in a list of them all */
};

/* A single token in the parser input stream
*/
struct PToken {
  const char *z;             /* Pointer to the token text */
  unsigned int n;            /* Length of the token in bytes */
  short int eCode;           /* Auxiliary code */
  unsigned char eType;       /* The numeric parser code */
  unsigned char eEdge;       /* Corner value for corner keywords */
};

/* Return negative, zero, or positive if pToken is less than, equal to
** or greater than the zero-terminated string z[]
*/
static int pik_token_eq(PToken *pToken, const char *z){
  int c = strncmp(pToken->z,z,pToken->n);
  if( c==0 && z[pToken->n]!=0 ) c = -1;
  return c;
}

/* Extra token types not generated by LEMON but needed by the
** tokenizer
*/
#define T_PARAMETER  253     /* $1, $2, ..., $9 */
#define T_WHITESPACE 254     /* Whitespace or comments */
#define T_ERROR      255     /* Any text that is not a valid token */

/* Directions of movement */
#define DIR_RIGHT     0
#define DIR_DOWN      1
#define DIR_LEFT      2
#define DIR_UP        3
#define ValidDir(X)     ((X)>=0 && (X)<=3)
#define IsUpDown(X)     (((X)&1)==1)
#define IsLeftRight(X)  (((X)&1)==0)

/* Bitmask for the various attributes for PObj.  These bits are
** collected in PObj.mProp and PObj.mCalc to check for constraint
** errors. */
#define A_WIDTH         0x0001
#define A_HEIGHT        0x0002
#define A_RADIUS        0x0004
#define A_THICKNESS     0x0008
#define A_DASHED        0x0010 /* Includes "dotted" */
#define A_FILL          0x0020
#define A_COLOR         0x0040
#define A_ARROW         0x0080
#define A_FROM          0x0100
#define A_CW            0x0200
#define A_AT            0x0400
#define A_TO            0x0800 /* one or more movement attributes */
#define A_FIT           0x1000


/* A single graphics object */
struct PObj {
  const PClass *type;      /* Object type or class */
  PToken errTok;           /* Reference token for error messages */
  PPoint ptAt;             /* Reference point for the object */
  PPoint ptEnter, ptExit;  /* Entry and exit points */
  PList *pSublist;         /* Substructure for [...] objects */
  char *zName;             /* Name assigned to this statement */
  PNum w;                  /* "width" property */
  PNum h;                  /* "height" property */
  PNum rad;                /* "radius" property */
  PNum sw;                 /* "thickness" property. (Mnemonic: "stroke width")*/
  PNum dotted;             /* "dotted" property.   <=0.0 for off */
  PNum dashed;             /* "dashed" property.   <=0.0 for off */
  PNum fill;               /* "fill" property.  Negative for off */
  PNum color;              /* "color" property */
  PPoint with;             /* Position constraint from WITH clause */
  char eWith;              /* Type of heading point on WITH clause */
  char cw;                 /* True for clockwise arc */
  char larrow;             /* Arrow at beginning (<- or <->) */
  char rarrow;             /* Arrow at end  (-> or <->) */
  char bClose;             /* True if "close" is seen */
  char bChop;              /* True if "chop" is seen */
  char bAltAutoFit;        /* Always send both h and w into xFit() */        
  unsigned char nTxt;      /* Number of text values */
  unsigned mProp;          /* Masks of properties set so far */
  unsigned mCalc;          /* Values computed from other constraints */
  PToken aTxt[5];          /* Text with .eCode holding TP flags */
  int iLayer;              /* Rendering order */
  int inDir, outDir;       /* Entry and exit directions */
  int nPath;               /* Number of path points */
  PPoint *aPath;           /* Array of path points */
  PObj *pFrom, *pTo;       /* End-point objects of a path */
  PBox bbox;               /* Bounding box */
};

/* A list of graphics objects */
struct PList {
  int n;          /* Number of statements in the list */
  int nAlloc;     /* Allocated slots in a[] */
  PObj **a;       /* Pointers to individual objects */
};

/* A macro definition */
struct PMacro {
  PMacro *pNext;       /* Next in the list */
  PToken macroName;    /* Name of the macro */
  PToken macroBody;    /* Body of the macro */
  int inUse;           /* Do not allow recursion */
};

/* Each call to the pikchr() subroutine uses an instance of the following
** object to pass around context to all of its subroutines.
*/
struct Pik {
  unsigned nErr;           /* Number of errors seen */
  unsigned nToken;         /* Number of tokens parsed */
  PToken sIn;              /* Input Pikchr-language text */
  char *zOut;              /* Result accumulates here */
  unsigned int nOut;       /* Bytes written to zOut[] so far */
  unsigned int nOutAlloc;  /* Space allocated to zOut[] */
  unsigned char eDir;      /* Current direction */
  unsigned int mFlags;     /* Flags passed to pikchr() */
  PObj *cur;               /* Object under construction */
  PObj *lastRef;           /* Last object references by name */
  PList *list;             /* Object list under construction */
  PMacro *pMacros;         /* List of all defined macros */
  PVar *pVar;              /* Application-defined variables */
  PBox bbox;               /* Bounding box around all statements */
                           /* Cache of layout values.  <=0.0 for unknown... */
  PNum rScale;                 /* Multiply to convert inches to pixels */
  PNum fontScale;              /* Scale fonts by this percent */
  PNum charWidth;              /* Character width */
  PNum charHeight;             /* Character height */
  PNum wArrow;                 /* Width of arrowhead at the fat end */
  PNum hArrow;                 /* Ht of arrowhead - dist from tip to fat end */
  char bLayoutVars;            /* True if cache is valid */
  char thenFlag;           /* True if "then" seen */
  char samePath;           /* aTPath copied by "same" */
  const char *zClass;      /* Class name for the <svg> */
  int wSVG, hSVG;          /* Width and height of the <svg> */
  int fgcolor;             /* foreground color value, or -1 for none */
  int bgcolor;             /* background color value, or -1 for none */
  /* Paths for lines are constructed here first, then transferred into
  ** the PObj object at the end: */
  int nTPath;              /* Number of entries on aTPath[] */
  int mTPath;              /* For last entry, 1: x set,  2: y set */
  PPoint aTPath[1000];     /* Path under construction */
  /* Error contexts */
  unsigned int nCtx;       /* Number of error contexts */
  PToken aCtx[10];         /* Nested error contexts */
};

/* Include PIKCHR_PLAINTEXT_ERRORS among the bits of mFlags on the 3rd
** argument to pikchr() in order to cause error message text to come out
** as text/plain instead of as text/html
*/
#define PIKCHR_PLAINTEXT_ERRORS 0x0001

/* Include PIKCHR_DARK_MODE among the mFlag bits to invert colors.
*/
#define PIKCHR_DARK_MODE        0x0002

/*
** The behavior of an object class is defined by an instance of
** this structure. This is the "virtual method" table.
*/
struct PClass {
  const char *zName;                     /* Name of class */
  char isLine;                           /* True if a line class */
  char eJust;                            /* Use box-style text justification */
  void (*xInit)(Pik*,PObj*);              /* Initializer */
  void (*xNumProp)(Pik*,PObj*,PToken*);   /* Value change notification */
  void (*xCheck)(Pik*,PObj*);             /* Checks to do after parsing */
  PPoint (*xChop)(Pik*,PObj*,PPoint*);    /* Chopper */
  PPoint (*xOffset)(Pik*,PObj*,int);      /* Offset from .c to edge point */
  void (*xFit)(Pik*,PObj*,PNum w,PNum h); /* Size to fit text */
  void (*xRender)(Pik*,PObj*);            /* Render */
};


/* Forward declarations */
static void pik_append(Pik*, const char*,int);
static void pik_append_text(Pik*,const char*,int,int);
static void pik_append_num(Pik*,const char*,PNum);
static void pik_append_point(Pik*,const char*,PPoint*);
static void pik_append_x(Pik*,const char*,PNum,const char*);
static void pik_append_y(Pik*,const char*,PNum,const char*);
static void pik_append_xy(Pik*,const char*,PNum,PNum);
static void pik_append_dis(Pik*,const char*,PNum,const char*);
static void pik_append_arc(Pik*,PNum,PNum,PNum,PNum);
static void pik_append_clr(Pik*,const char*,PNum,const char*,int);
static void pik_append_style(Pik*,PObj*,int);
static void pik_append_txt(Pik*,PObj*, PBox*);
static void pik_draw_arrowhead(Pik*,PPoint*pFrom,PPoint*pTo,PObj*);
static void pik_chop(PPoint*pFrom,PPoint*pTo,PNum);
static void pik_error(Pik*,PToken*,const char*);
static void pik_elist_free(Pik*,PList*);
static void pik_elem_free(Pik*,PObj*);
static void pik_render(Pik*,PList*);
static PList *pik_elist_append(Pik*,PList*,PObj*);
static PObj *pik_elem_new(Pik*,PToken*,PToken*,PList*);
static void pik_set_direction(Pik*,int);
static void pik_elem_setname(Pik*,PObj*,PToken*);
static int pik_round(PNum);
static void pik_set_var(Pik*,PToken*,PNum,PToken*);
static PNum pik_value(Pik*,const char*,int,int*);
static int pik_value_int(Pik*,const char*,int,int*);
static PNum pik_lookup_color(Pik*,PToken*);
static PNum pik_get_var(Pik*,PToken*);
static PNum pik_atof(PToken*);
static void pik_after_adding_attributes(Pik*,PObj*);
static void pik_elem_move(PObj*,PNum dx, PNum dy);
static void pik_elist_move(PList*,PNum dx, PNum dy);
static void pik_set_numprop(Pik*,PToken*,PRel*);
static void pik_set_clrprop(Pik*,PToken*,PNum);
static void pik_set_dashed(Pik*,PToken*,PNum*);
static void pik_then(Pik*,PToken*,PObj*);
static void pik_add_direction(Pik*,PToken*,PRel*);
static void pik_move_hdg(Pik*,PRel*,PToken*,PNum,PToken*,PToken*);
static void pik_evenwith(Pik*,PToken*,PPoint*);
static void pik_set_from(Pik*,PObj*,PToken*,PPoint*);
static void pik_add_to(Pik*,PObj*,PToken*,PPoint*);
static void pik_close_path(Pik*,PToken*);
static void pik_set_at(Pik*,PToken*,PPoint*,PToken*);
static short int pik_nth_value(Pik*,PToken*);
static PObj *pik_find_nth(Pik*,PObj*,PToken*);
static PObj *pik_find_byname(Pik*,PObj*,PToken*);
static PPoint pik_place_of_elem(Pik*,PObj*,PToken*);
static int pik_bbox_isempty(PBox*);
static int pik_bbox_contains_point(PBox*,PPoint*);
static void pik_bbox_init(PBox*);
static void pik_bbox_addbox(PBox*,PBox*);
static void pik_bbox_add_xy(PBox*,PNum,PNum);
static void pik_bbox_addellipse(PBox*,PNum x,PNum y,PNum rx,PNum ry);
static void pik_add_txt(Pik*,PToken*,int);
static int pik_text_length(const PToken *pToken, const int isMonospace);
static void pik_size_to_fit(Pik*,PToken*,int);
static int pik_text_position(int,PToken*);
static PNum pik_property_of(PObj*,PToken*);
static PNum pik_func(Pik*,PToken*,PNum,PNum);
static PPoint pik_position_between(PNum x, PPoint p1, PPoint p2);
static PPoint pik_position_at_angle(PNum dist, PNum r, PPoint pt);
static PPoint pik_position_at_hdg(PNum dist, PToken *pD, PPoint pt);
static void pik_same(Pik *p, PObj*, PToken*);
static PPoint pik_nth_vertex(Pik *p, PToken *pNth, PToken *pErr, PObj *pObj);
static PToken pik_next_semantic_token(PToken *pThis);
static void pik_compute_layout_settings(Pik*);
static void pik_behind(Pik*,PObj*);
static PObj *pik_assert(Pik*,PNum,PToken*,PNum);
static PObj *pik_position_assert(Pik*,PPoint*,PToken*,PPoint*);
static PNum pik_dist(PPoint*,PPoint*);
static void pik_add_macro(Pik*,PToken *pId,PToken *pCode);


#line 523 "pikchr.c"
/**************** End of %include directives **********************************/
/* These constants specify the various numeric values for terminal symbols.
***************** Begin token definitions *************************************/
#ifndef T_ID
#define T_ID                              1
#define T_EDGEPT                          2
#define T_OF                              3
#define T_PLUS                            4
#define T_MINUS                           5
#define T_STAR                            6
#define T_SLASH                           7
#define T_PERCENT                         8
#define T_UMINUS                          9
#define T_EOL                            10
#define T_ASSIGN                         11
#define T_PLACENAME                      12
#define T_COLON                          13
#define T_ASSERT                         14
#define T_LP                             15
#define T_EQ                             16
#define T_RP                             17
#define T_DEFINE                         18
#define T_CODEBLOCK                      19
#define T_FILL                           20
#define T_COLOR                          21
#define T_THICKNESS                      22
#define T_PRINT                          23
#define T_STRING                         24
#define T_COMMA                          25
#define T_CLASSNAME                      26
#define T_LB                             27
#define T_RB                             28
#define T_UP                             29
#define T_DOWN                           30
#define T_LEFT                           31
#define T_RIGHT                          32
#define T_CLOSE                          33
#define T_CHOP                           34
#define T_FROM                           35
#define T_TO                             36
#define T_THEN                           37
#define T_HEADING                        38
#define T_GO                             39
#define T_AT                             40
#define T_WITH                           41
#define T_SAME                           42
#define T_AS                             43
#define T_FIT                            44
#define T_BEHIND                         45
#define T_UNTIL                          46
#define T_EVEN                           47
#define T_DOT_E                          48
#define T_HEIGHT                         49
#define T_WIDTH                          50
#define T_RADIUS                         51
#define T_DIAMETER                       52
#define T_DOTTED                         53
#define T_DASHED                         54
#define T_CW                             55
#define T_CCW                            56
#define T_LARROW                         57
#define T_RARROW                         58
#define T_LRARROW                        59
#define T_INVIS                          60
#define T_THICK                          61
#define T_THIN                           62
#define T_SOLID                          63
#define T_CENTER                         64
#define T_LJUST                          65
#define T_RJUST                          66
#define T_ABOVE                          67
#define T_BELOW                          68
#define T_ITALIC                         69
#define T_BOLD                           70
#define T_MONO                           71
#define T_ALIGNED                        72
#define T_BIG                            73
#define T_SMALL                          74
#define T_AND                            75
#define T_LT                             76
#define T_GT                             77
#define T_ON                             78
#define T_WAY                            79
#define T_BETWEEN                        80
#define T_THE                            81
#define T_NTH                            82
#define T_VERTEX                         83
#define T_TOP                            84
#define T_BOTTOM                         85
#define T_START                          86
#define T_END                            87
#define T_IN                             88
#define T_THIS                           89
#define T_DOT_U                          90
#define T_LAST                           91
#define T_NUMBER                         92
#define T_FUNC1                          93
#define T_FUNC2                          94
#define T_DIST                           95
#define T_DOT_XY                         96
#define T_X                              97
#define T_Y                              98
#define T_DOT_L                          99
#endif
/**************** End token definitions ***************************************/

/* The next sections is a series of control #defines.
** various aspects of the generated parser.
**    YYCODETYPE         is the data type used to store the integer codes
**                       that represent terminal and non-terminal symbols.
**                       "unsigned char" is used if there are fewer than
**                       256 symbols.  Larger types otherwise.
**    YYNOCODE           is a number of type YYCODETYPE that is not used for
**                       any terminal or nonterminal symbol.
**    YYFALLBACK         If defined, this indicates that one or more tokens
**                       (also known as: "terminal symbols") have fall-back
**                       values which should be used if the original symbol
**                       would not parse.  This permits keywords to sometimes
**                       be used as identifiers, for example.
**    YYACTIONTYPE       is the data type used for "action codes" - numbers
**                       that indicate what to do in response to the next
**                       token.
**    pik_parserTOKENTYPE     is the data type used for minor type for terminal
**                       symbols.  Background: A "minor type" is a semantic
**                       value associated with a terminal or non-terminal
**                       symbols.  For example, for an "ID" terminal symbol,
**                       the minor type might be the name of the identifier.
**                       Each non-terminal can have a different minor type.
**                       Terminal symbols all have the same minor type, though.
**                       This macros defines the minor type for terminal 
**                       symbols.
**    YYMINORTYPE        is the data type used for all minor types.
**                       This is typically a union of many types, one of
**                       which is pik_parserTOKENTYPE.  The entry in the union
**                       for terminal symbols is called "yy0".
**    YYSTACKDEPTH       is the maximum depth of the parser's stack.  If
**                       zero the stack is dynamically sized using realloc()
**    pik_parserARG_SDECL     A static variable declaration for the %extra_argument
**    pik_parserARG_PDECL     A parameter declaration for the %extra_argument
**    pik_parserARG_PARAM     Code to pass %extra_argument as a subroutine parameter
**    pik_parserARG_STORE     Code to store %extra_argument into yypParser
**    pik_parserARG_FETCH     Code to extract %extra_argument from yypParser
**    pik_parserCTX_*         As pik_parserARG_ except for %extra_context
**    YYREALLOC          Name of the realloc() function to use
**    YYFREE             Name of the free() function to use
**    YYDYNSTACK         True if stack space should be extended on heap
**    YYERRORSYMBOL      is the code number of the error symbol.  If not
**                       defined, then do no error processing.
**    YYNSTATE           the combined number of states.
**    YYNRULE            the number of rules in the grammar
**    YYNTOKEN           Number of terminal symbols
**    YY_MAX_SHIFT       Maximum value for shift actions
**    YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions
**    YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions
**    YY_ERROR_ACTION    The yy_action[] code for syntax error
**    YY_ACCEPT_ACTION   The yy_action[] code for accept
**    YY_NO_ACTION       The yy_action[] code for no-op
**    YY_MIN_REDUCE      Minimum value for reduce actions
**    YY_MAX_REDUCE      Maximum value for reduce actions
**    YY_MIN_DSTRCTR     Minimum symbol value that has a destructor
**    YY_MAX_DSTRCTR     Maximum symbol value that has a destructor
*/
#ifndef INTERFACE
# define INTERFACE 1
#endif
/************* Begin control #defines *****************************************/
#define YYCODETYPE unsigned char
#define YYNOCODE 136
#define YYACTIONTYPE unsigned short int
#define pik_parserTOKENTYPE PToken
typedef union {
  int yyinit;
  pik_parserTOKENTYPE yy0;
  PNum yy21;
  PPoint yy63;
  PRel yy72;
  PObj* yy162;
  short int yy188;
  PList* yy235;
} YYMINORTYPE;
#ifndef YYSTACKDEPTH
#define YYSTACKDEPTH 100
#endif
#define pik_parserARG_SDECL
#define pik_parserARG_PDECL
#define pik_parserARG_PARAM
#define pik_parserARG_FETCH
#define pik_parserARG_STORE
#define YYREALLOC realloc
#define YYFREE free
#define YYDYNSTACK 0
#define pik_parserCTX_SDECL Pik *p;
#define pik_parserCTX_PDECL ,Pik *p
#define pik_parserCTX_PARAM ,p
#define pik_parserCTX_FETCH Pik *p=yypParser->p;
#define pik_parserCTX_STORE yypParser->p=p;
#define YYFALLBACK 1
#define YYNSTATE             164
#define YYNRULE              156
#define YYNRULE_WITH_ACTION  116
#define YYNTOKEN             100
#define YY_MAX_SHIFT         163
#define YY_MIN_SHIFTREDUCE   287
#define YY_MAX_SHIFTREDUCE   442
#define YY_ERROR_ACTION      443
#define YY_ACCEPT_ACTION     444
#define YY_NO_ACTION         445
#define YY_MIN_REDUCE        446
#define YY_MAX_REDUCE        601
#define YY_MIN_DSTRCTR       100
#define YY_MAX_DSTRCTR       103
/************* End control #defines *******************************************/
#define YY_NLOOKAHEAD ((int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])))

/* Define the yytestcase() macro to be a no-op if is not already defined
** otherwise.
**
** Applications can choose to define yytestcase() in the %include section
** to a macro that can assist in verifying code coverage.  For production
** code the yytestcase() macro should be turned off.  But it is useful
** for testing.
*/
#ifndef yytestcase
# define yytestcase(X)
#endif

/* Macro to determine if stack space has the ability to grow using
** heap memory.
*/
#if YYSTACKDEPTH<=0 || YYDYNSTACK
# define YYGROWABLESTACK 1
#else
# define YYGROWABLESTACK 0
#endif

/* Guarantee a minimum number of initial stack slots.
*/
#if YYSTACKDEPTH<=0
# undef YYSTACKDEPTH
# define YYSTACKDEPTH 2  /* Need a minimum stack size */
#endif


/* Next are the tables used to determine what action to take based on the
** current state and lookahead token.  These tables are used to implement
** functions that take a state number and lookahead value and return an
** action integer.  
**
** Suppose the action integer is N.  Then the action is determined as
** follows
**
**   0 <= N <= YY_MAX_SHIFT             Shift N.  That is, push the lookahead
**                                      token onto the stack and goto state N.
**
**   N between YY_MIN_SHIFTREDUCE       Shift to an arbitrary state then
**     and YY_MAX_SHIFTREDUCE           reduce by rule N-YY_MIN_SHIFTREDUCE.
**
**   N == YY_ERROR_ACTION               A syntax error has occurred.
**
**   N == YY_ACCEPT_ACTION              The parser accepts its input.
**
**   N == YY_NO_ACTION                  No such action.  Denotes unused
**                                      slots in the yy_action[] table.
**
**   N between YY_MIN_REDUCE            Reduce by rule N-YY_MIN_REDUCE
**     and YY_MAX_REDUCE
**
** The action table is constructed as a single large table named yy_action[].
** Given state S and lookahead X, the action is computed as either:
**
**    (A)   N = yy_action[ yy_shift_ofst[S] + X ]
**    (B)   N = yy_default[S]
**
** The (A) formula is preferred.  The B formula is used instead if
** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X.
**
** The formulas above are for computing the action when the lookahead is
** a terminal symbol.  If the lookahead is a non-terminal (as occurs after
** a reduce action) then the yy_reduce_ofst[] array is used in place of
** the yy_shift_ofst[] array.
**
** The following are the tables generated in this section:
**
**  yy_action[]        A single table containing all actions.
**  yy_lookahead[]     A table containing the lookahead for each entry in
**                     yy_action.  Used to detect hash collisions.
**  yy_shift_ofst[]    For each state, the offset into yy_action for
**                     shifting terminals.
**  yy_reduce_ofst[]   For each state, the offset into yy_action for
**                     shifting non-terminals after a reduce.
**  yy_default[]       Default action for each state.
**
*********** Begin parsing tables **********************************************/
#define YY_ACTTAB_COUNT (1313)
static const YYACTIONTYPE yy_action[] = {
 /*     0 */   575,  495,  161,  119,   25,  452,   29,   74,  129,  148,
 /*    10 */   575,  492,  161,  119,  453,  113,  120,  161,  119,  530,
 /*    20 */   427,  428,  339,  559,   81,   30,  560,  561,  575,   64,
 /*    30 */    63,   62,   61,  322,  323,    9,    8,   33,  149,   32,
 /*    40 */     7,   71,  127,   38,  335,   66,   48,   37,   28,  339,
 /*    50 */   339,  339,  339,  425,  426,  340,  341,  342,  343,  344,
 /*    60 */   345,  346,  347,  348,  474,  528,  161,  119,  577,   77,
 /*    70 */   577,   73,  306,  148,  474,  533,  161,  119,  112,  113,
 /*    80 */   120,  161,  119,  128,  427,  428,  339,   31,   81,  531,
 /*    90 */   161,  119,  474,   35,  330,  378,  158,  322,  323,    9,
 /*   100 */     8,   33,  149,   32,    7,   71,  127,  328,  335,   66,
 /*   110 */   579,  378,  158,  339,  339,  339,  339,  425,  426,  340,
 /*   120 */   341,  342,  343,  344,  345,  346,  347,  348,  394,  435,
 /*   130 */    46,   59,   60,   64,   63,   62,   61,  357,   36,  376,
 /*   140 */    54,   51,    2,   47,  403,   13,  297,  411,  412,  413,
 /*   150 */   414,   80,  162,  308,   79,  133,  310,  126,  441,  440,
 /*   160 */   118,  123,   83,  404,  405,  406,  408,   80,   84,  308,
 /*   170 */    79,  299,  411,  412,  413,  414,  118,   69,  350,  350,
 /*   180 */   350,  350,  350,  350,  350,  350,  350,  350,  350,   62,
 /*   190 */    61,  434,   64,   63,   62,   61,  313,  398,  399,  427,
 /*   200 */   428,  339,  380,  157,   64,   63,   62,   61,  122,  106,
 /*   210 */   535,  436,  437,  438,  439,  298,  375,  391,  117,  393,
 /*   220 */   155,  154,  153,  394,  435,   49,   59,   60,  339,  339,
 /*   230 */   339,  339,  425,  426,  376,    3,    4,    2,   64,   63,
 /*   240 */    62,   61,  156,  156,  156,  394,  379,  159,   59,   60,
 /*   250 */    76,   67,  535,  441,  440,    5,  102,    6,  535,   42,
 /*   260 */   131,  535,   69,  107,  301,  302,  303,  394,  305,   15,
 /*   270 */    59,   60,  120,  161,  119,  446,  463,  424,  376,  423,
 /*   280 */     1,   42,  397,   78,   78,   36,  434,   11,  394,  435,
 /*   290 */   356,   59,   60,   12,  152,  139,  432,   14,   16,  376,
 /*   300 */    18,   65,    2,  138,  106,  430,  436,  437,  438,  439,
 /*   310 */    44,  375,   19,  117,  393,  155,  154,  153,  441,  440,
 /*   320 */   142,  140,   64,   63,   62,   61,  106,   20,   68,  376,
 /*   330 */   359,  107,   23,  375,   45,  117,  393,  155,  154,  153,
 /*   340 */   120,  161,  119,   55,  463,  114,   26,   57,  106,  147,
 /*   350 */   146,  434,  569,   58,  392,  375,   43,  117,  393,  155,
 /*   360 */   154,  153,  152,  384,   64,   63,   62,   61,  382,  106,
 /*   370 */   383,  436,  437,  438,  439,  377,  375,   70,  117,  393,
 /*   380 */   155,  154,  153,  160,   39,   22,   21,  445,  142,  140,
 /*   390 */    64,   63,   62,   61,   24,   17,  145,  141,  431,  108,
 /*   400 */   445,  445,  445,  391,  445,  445,  375,  445,  117,  445,
 /*   410 */   445,   55,   74,  445,  148,  445,  445,  147,  146,  124,
 /*   420 */   113,  120,  161,  119,   43,  445,  445,  142,  140,   64,
 /*   430 */    63,   62,   61,  445,  394,  445,  445,   59,   60,   64,
 /*   440 */    63,   62,   61,  149,  445,  376,  445,  445,   42,  445,
 /*   450 */    55,  445,  391,   22,   21,  445,  147,  146,  445,  445,
 /*   460 */    52,  445,   24,   43,  145,  141,  431,  394,  445,  445,
 /*   470 */    59,   60,   64,   63,   62,   61,  445,  445,  376,  132,
 /*   480 */   130,   42,  445,  445,  445,  355,  156,  156,  156,  445,
 /*   490 */   445,  445,   22,   21,  445,  394,  473,  445,   59,   60,
 /*   500 */   445,   24,  445,  145,  141,  431,  376,  445,  107,   42,
 /*   510 */    64,   63,   62,   61,  445,  106,  445,  120,  161,  119,
 /*   520 */   445,  478,  375,  354,  117,  393,  155,  154,  153,  445,
 /*   530 */   394,  143,  473,   59,   60,   64,   63,   62,   61,  152,
 /*   540 */   445,  376,  445,  445,   42,  445,  445,  445,  106,   64,
 /*   550 */    63,   62,   61,  445,  445,  375,   50,  117,  393,  155,
 /*   560 */   154,  153,  445,  394,  144,  445,   59,   60,  445,  445,
 /*   570 */    53,   72,  445,  148,  376,  445,  106,   42,  125,  113,
 /*   580 */   120,  161,  119,  375,  445,  117,  393,  155,  154,  153,
 /*   590 */   394,  445,  445,   59,   60,  445,  445,  445,  445,  445,
 /*   600 */   445,  102,  149,  445,   42,  445,   74,  445,  148,  445,
 /*   610 */   445,  106,  445,  497,  113,  120,  161,  119,  375,  445,
 /*   620 */   117,  393,  155,  154,  153,  394,  445,  445,   59,   60,
 /*   630 */   445,  445,   88,  445,  445,  445,  376,  149,  445,   40,
 /*   640 */   445,  120,  161,  119,  106,  445,  445,  435,  110,  110,
 /*   650 */   445,  375,  445,  117,  393,  155,  154,  153,  394,  445,
 /*   660 */   445,   59,   60,  152,   85,  445,  445,  445,  445,  376,
 /*   670 */   445,  106,   41,  120,  161,  119,  441,  440,  375,  445,
 /*   680 */   117,  393,  155,  154,  153,  448,  454,   29,  445,  445,
 /*   690 */    74,  450,  148,   75,   88,  152,  445,  496,  113,  120,
 /*   700 */   161,  119,  163,  120,  161,  119,  106,   27,  445,  434,
 /*   710 */   111,  111,  445,  375,  445,  117,  393,  155,  154,  153,
 /*   720 */   445,  149,  445,  445,  445,  152,   74,  445,  148,  436,
 /*   730 */   437,  438,  439,  490,  113,  120,  161,  119,  445,  106,
 /*   740 */   121,  447,  454,   29,  445,  445,  375,  450,  117,  393,
 /*   750 */   155,  154,  153,  445,  445,  445,  445,  149,  163,   74,
 /*   760 */   445,  148,  444,   27,  445,  445,  484,  113,  120,  161,
 /*   770 */   119,  445,  445,  445,   74,  445,  148,  445,  445,  445,
 /*   780 */   445,  483,  113,  120,  161,  119,   74,  445,  148,   86,
 /*   790 */   149,  445,  445,  480,  113,  120,  161,  119,  120,  161,
 /*   800 */   119,  445,   74,  445,  148,  149,  445,  445,  445,  134,
 /*   810 */   113,  120,  161,  119,   74,  445,  148,  149,  445,  445,
 /*   820 */   152,  517,  113,  120,  161,  119,   88,   64,   63,   62,
 /*   830 */    61,  445,  445,  149,  445,  120,  161,  119,  445,   74,
 /*   840 */   396,  148,  475,  445,  445,  149,  137,  113,  120,  161,
 /*   850 */   119,   74,  445,  148,  445,  445,  445,  152,  525,  113,
 /*   860 */   120,  161,  119,  445,   74,  445,  148,  445,  445,  445,
 /*   870 */   149,  527,  113,  120,  161,  119,  445,  445,  445,   74,
 /*   880 */   445,  148,  149,  445,  445,  445,  524,  113,  120,  161,
 /*   890 */   119,   74,  445,  148,   98,  149,  445,  445,  526,  113,
 /*   900 */   120,  161,  119,  120,  161,  119,  445,   74,  445,  148,
 /*   910 */   149,  445,  445,  445,  523,  113,  120,  161,  119,   74,
 /*   920 */   445,  148,  149,  445,  445,  152,  522,  113,  120,  161,
 /*   930 */   119,   89,   64,   63,   62,   61,  445,  445,  149,  445,
 /*   940 */   120,  161,  119,  445,   74,  395,  148,  445,  445,  445,
 /*   950 */   149,  521,  113,  120,  161,  119,   74,  445,  148,  445,
 /*   960 */   445,  445,  152,  520,  113,  120,  161,  119,  445,   74,
 /*   970 */   445,  148,  445,  445,  445,  149,  519,  113,  120,  161,
 /*   980 */   119,  445,  445,  445,   74,  445,  148,  149,  445,  445,
 /*   990 */   445,  150,  113,  120,  161,  119,   74,  445,  148,   90,
 /*  1000 */   149,  445,  445,  151,  113,  120,  161,  119,  120,  161,
 /*  1010 */   119,  445,   74,  445,  148,  149,  445,  435,  445,  136,
 /*  1020 */   113,  120,  161,  119,   74,  445,  148,  149,  445,  445,
 /*  1030 */   152,  135,  113,  120,  161,  119,   64,   63,   62,   61,
 /*  1040 */   445,  445,  445,  149,  445,  445,  441,  440,  445,   88,
 /*  1050 */   445,  445,  445,  445,  445,  149,  445,   56,  120,  161,
 /*  1060 */   119,   88,  445,  445,   10,  479,  479,  445,  445,  445,
 /*  1070 */   120,  161,  119,  445,  445,  445,  445,   82,  445,  434,
 /*  1080 */   152,  445,  445,  445,  466,  445,   34,  109,  447,  454,
 /*  1090 */    29,  445,  152,  445,  450,  445,  445,  445,  107,  436,
 /*  1100 */   437,  438,  439,   87,  445,  163,  445,  120,  161,  119,
 /*  1110 */    27,  451,  120,  161,  119,   99,  445,   64,   63,   62,
 /*  1120 */    61,  445,  100,  445,  120,  161,  119,  101,  445,  152,
 /*  1130 */   391,  120,  161,  119,  152,  445,  120,  161,  119,   91,
 /*  1140 */   445,  445,  445,  445,  445,  445,  152,  445,  120,  161,
 /*  1150 */   119,  103,  445,  152,   92,  445,  445,  445,  152,  445,
 /*  1160 */   120,  161,  119,  120,  161,  119,   93,  445,  445,  104,
 /*  1170 */   152,  445,  445,  445,  445,  120,  161,  119,  120,  161,
 /*  1180 */   119,  445,  152,  445,   94,  152,  445,  445,  445,  445,
 /*  1190 */   445,  445,  105,  120,  161,  119,  445,  152,  445,   95,
 /*  1200 */   152,  120,  161,  119,  445,  445,  445,   96,  120,  161,
 /*  1210 */   119,  445,  445,  445,  445,  152,  120,  161,  119,  445,
 /*  1220 */   445,  445,  445,  152,  445,  445,  445,  445,  445,  445,
 /*  1230 */   152,   97,  445,  445,  549,  445,  445,  548,  152,  445,
 /*  1240 */   120,  161,  119,  120,  161,  119,  120,  161,  119,  445,
 /*  1250 */   445,  445,  445,  445,  445,  445,  445,  445,  445,  445,
 /*  1260 */   445,  445,  152,  547,  445,  152,  546,  445,  152,  115,
 /*  1270 */   445,  445,  120,  161,  119,  120,  161,  119,  120,  161,
 /*  1280 */   119,  116,  445,  445,  445,  445,  445,  445,  445,  445,
 /*  1290 */   120,  161,  119,  445,  152,  445,  445,  152,  445,  445,
 /*  1300 */   152,  445,  445,  445,  445,  445,  445,  445,  445,  445,
 /*  1310 */   445,  445,  152,
};
static const YYCODETYPE yy_lookahead[] = {
 /*     0 */     0,  113,  114,  115,  134,  102,  103,  104,  106,  106,
 /*    10 */    10,  113,  114,  115,  111,  112,  113,  114,  115,  106,
 /*    20 */    20,   21,   22,  105,   24,  126,  108,  109,   28,    4,
 /*    30 */     5,    6,    7,   33,   34,   35,   36,   37,  135,   39,
 /*    40 */    40,   41,   42,  105,   44,   45,  108,  109,  107,   49,
 /*    50 */    50,   51,   52,   53,   54,   55,   56,   57,   58,   59,
 /*    60 */    60,   61,   62,   63,    0,  113,  114,  115,  130,  131,
 /*    70 */   132,  104,   25,  106,   10,  113,  114,  115,  111,  112,
 /*    80 */   113,  114,  115,  106,   20,   21,   22,  128,   24,  113,
 /*    90 */   114,  115,   28,  129,    2,   26,   27,   33,   34,   35,
 /*   100 */    36,   37,  135,   39,   40,   41,   42,    2,   44,   45,
 /*   110 */   133,   26,   27,   49,   50,   51,   52,   53,   54,   55,
 /*   120 */    56,   57,   58,   59,   60,   61,   62,   63,    1,    2,
 /*   130 */    38,    4,    5,    4,    5,    6,    7,   17,   10,   12,
 /*   140 */     4,    5,   15,   38,    1,   25,   17,   29,   30,   31,
 /*   150 */    32,   24,   83,   26,   27,   12,   28,   14,   31,   32,
 /*   160 */    91,   18,  116,   20,   21,   22,   23,   24,  116,   26,
 /*   170 */    27,   19,   29,   30,   31,   32,   91,    3,   64,   65,
 /*   180 */    66,   67,   68,   69,   70,   71,   72,   73,   74,    6,
 /*   190 */     7,   64,    4,    5,    6,    7,    8,   97,   98,   20,
 /*   200 */    21,   22,   26,   27,    4,    5,    6,    7,    1,   82,
 /*   210 */    48,   84,   85,   86,   87,   17,   89,   17,   91,   92,
 /*   220 */    93,   94,   95,    1,    2,   25,    4,    5,   49,   50,
 /*   230 */    51,   52,   53,   54,   12,   16,   15,   15,    4,    5,
 /*   240 */     6,    7,   20,   21,   22,    1,   26,   27,    4,    5,
 /*   250 */    48,   43,   90,   31,   32,   40,   12,   40,   96,   15,
 /*   260 */    47,   99,   88,  104,   20,   21,   22,    1,   24,   35,
 /*   270 */     4,    5,  113,  114,  115,    0,  117,   41,   12,   41,
 /*   280 */    13,   15,   17,  124,  125,   10,   64,   25,    1,    2,
 /*   290 */    17,    4,    5,   75,  135,   81,   80,    3,    3,   12,
 /*   300 */     3,   99,   15,   79,   82,   80,   84,   85,   86,   87,
 /*   310 */    38,   89,    3,   91,   92,   93,   94,   95,   31,   32,
 /*   320 */     2,    3,    4,    5,    6,    7,   82,    3,    3,   12,
 /*   330 */    77,  104,   25,   89,   16,   91,   92,   93,   94,   95,
 /*   340 */   113,  114,  115,   25,  117,   96,   15,   15,   82,   31,
 /*   350 */    32,   64,  125,   15,   17,   89,   38,   91,   92,   93,
 /*   360 */    94,   95,  135,   28,    4,    5,    6,    7,   28,   82,
 /*   370 */    28,   84,   85,   86,   87,   12,   89,    3,   91,   92,
 /*   380 */    93,   94,   95,   90,   11,   67,   68,  136,    2,    3,
 /*   390 */     4,    5,    6,    7,   76,   35,   78,   79,   80,   82,
 /*   400 */   136,  136,  136,   17,  136,  136,   89,  136,   91,  136,
 /*   410 */   136,   25,  104,  136,  106,  136,  136,   31,   32,  111,
 /*   420 */   112,  113,  114,  115,   38,  136,  136,    2,    3,    4,
 /*   430 */     5,    6,    7,  136,    1,  136,  136,    4,    5,    4,
 /*   440 */     5,    6,    7,  135,  136,   12,  136,  136,   15,  136,
 /*   450 */    25,  136,   17,   67,   68,  136,   31,   32,  136,  136,
 /*   460 */    25,  136,   76,   38,   78,   79,   80,    1,  136,  136,
 /*   470 */     4,    5,    4,    5,    6,    7,  136,  136,   12,   46,
 /*   480 */    47,   15,  136,  136,  136,   17,   20,   21,   22,  136,
 /*   490 */   136,  136,   67,   68,  136,    1,    2,  136,    4,    5,
 /*   500 */   136,   76,  136,   78,   79,   80,   12,  136,  104,   15,
 /*   510 */     4,    5,    6,    7,  136,   82,  136,  113,  114,  115,
 /*   520 */   136,  117,   89,   17,   91,   92,   93,   94,   95,  136,
 /*   530 */     1,    2,   38,    4,    5,    4,    5,    6,    7,  135,
 /*   540 */   136,   12,  136,  136,   15,  136,  136,  136,   82,    4,
 /*   550 */     5,    6,    7,  136,  136,   89,   25,   91,   92,   93,
 /*   560 */    94,   95,  136,    1,    2,  136,    4,    5,  136,  136,
 /*   570 */    25,  104,  136,  106,   12,  136,   82,   15,  111,  112,
 /*   580 */   113,  114,  115,   89,  136,   91,   92,   93,   94,   95,
 /*   590 */     1,  136,  136,    4,    5,  136,  136,  136,  136,  136,
 /*   600 */   136,   12,  135,  136,   15,  136,  104,  136,  106,  136,
 /*   610 */   136,   82,  136,  111,  112,  113,  114,  115,   89,  136,
 /*   620 */    91,   92,   93,   94,   95,    1,  136,  136,    4,    5,
 /*   630 */   136,  136,  104,  136,  136,  136,   12,  135,  136,   15,
 /*   640 */   136,  113,  114,  115,   82,  136,  136,    2,  120,  121,
 /*   650 */   136,   89,  136,   91,   92,   93,   94,   95,    1,  136,
 /*   660 */   136,    4,    5,  135,  104,  136,  136,  136,  136,   12,
 /*   670 */   136,   82,   15,  113,  114,  115,   31,   32,   89,  136,
 /*   680 */    91,   92,   93,   94,   95,  101,  102,  103,  136,  136,
 /*   690 */   104,  107,  106,   48,  104,  135,  136,  111,  112,  113,
 /*   700 */   114,  115,  118,  113,  114,  115,   82,  123,  136,   64,
 /*   710 */   120,  121,  136,   89,  136,   91,   92,   93,   94,   95,
 /*   720 */   136,  135,  136,  136,  136,  135,  104,  136,  106,   84,
 /*   730 */    85,   86,   87,  111,  112,  113,  114,  115,  136,   82,
 /*   740 */   100,  101,  102,  103,  136,  136,   89,  107,   91,   92,
 /*   750 */    93,   94,   95,  136,  136,  136,  136,  135,  118,  104,
 /*   760 */   136,  106,  122,  123,  136,  136,  111,  112,  113,  114,
 /*   770 */   115,  136,  136,  136,  104,  136,  106,  136,  136,  136,
 /*   780 */   136,  111,  112,  113,  114,  115,  104,  136,  106,  104,
 /*   790 */   135,  136,  136,  111,  112,  113,  114,  115,  113,  114,
 /*   800 */   115,  136,  104,  136,  106,  135,  136,  136,  136,  111,
 /*   810 */   112,  113,  114,  115,  104,  136,  106,  135,  136,  136,
 /*   820 */   135,  111,  112,  113,  114,  115,  104,    4,    5,    6,
 /*   830 */     7,  136,  136,  135,  136,  113,  114,  115,  136,  104,
 /*   840 */    17,  106,  120,  136,  136,  135,  111,  112,  113,  114,
 /*   850 */   115,  104,  136,  106,  136,  136,  136,  135,  111,  112,
 /*   860 */   113,  114,  115,  136,  104,  136,  106,  136,  136,  136,
 /*   870 */   135,  111,  112,  113,  114,  115,  136,  136,  136,  104,
 /*   880 */   136,  106,  135,  136,  136,  136,  111,  112,  113,  114,
 /*   890 */   115,  104,  136,  106,  104,  135,  136,  136,  111,  112,
 /*   900 */   113,  114,  115,  113,  114,  115,  136,  104,  136,  106,
 /*   910 */   135,  136,  136,  136,  111,  112,  113,  114,  115,  104,
 /*   920 */   136,  106,  135,  136,  136,  135,  111,  112,  113,  114,
 /*   930 */   115,  104,    4,    5,    6,    7,  136,  136,  135,  136,
 /*   940 */   113,  114,  115,  136,  104,   17,  106,  136,  136,  136,
 /*   950 */   135,  111,  112,  113,  114,  115,  104,  136,  106,  136,
 /*   960 */   136,  136,  135,  111,  112,  113,  114,  115,  136,  104,
 /*   970 */   136,  106,  136,  136,  136,  135,  111,  112,  113,  114,
 /*   980 */   115,  136,  136,  136,  104,  136,  106,  135,  136,  136,
 /*   990 */   136,  111,  112,  113,  114,  115,  104,  136,  106,  104,
 /*  1000 */   135,  136,  136,  111,  112,  113,  114,  115,  113,  114,
 /*  1010 */   115,  136,  104,  136,  106,  135,  136,    2,  136,  111,
 /*  1020 */   112,  113,  114,  115,  104,  136,  106,  135,  136,  136,
 /*  1030 */   135,  111,  112,  113,  114,  115,    4,    5,    6,    7,
 /*  1040 */   136,  136,  136,  135,  136,  136,   31,   32,  136,  104,
 /*  1050 */   136,  136,  136,  136,  136,  135,  136,   25,  113,  114,
 /*  1060 */   115,  104,  136,  136,  119,  120,  121,  136,  136,  136,
 /*  1070 */   113,  114,  115,  136,  136,  136,  136,  120,  136,   64,
 /*  1080 */   135,  136,  136,  136,  127,  136,  129,  100,  101,  102,
 /*  1090 */   103,  136,  135,  136,  107,  136,  136,  136,  104,   84,
 /*  1100 */    85,   86,   87,  104,  136,  118,  136,  113,  114,  115,
 /*  1110 */   123,  117,  113,  114,  115,  104,  136,    4,    5,    6,
 /*  1120 */     7,  136,  104,  136,  113,  114,  115,  104,  136,  135,
 /*  1130 */    17,  113,  114,  115,  135,  136,  113,  114,  115,  104,
 /*  1140 */   136,  136,  136,  136,  136,  136,  135,  136,  113,  114,
 /*  1150 */   115,  104,  136,  135,  104,  136,  136,  136,  135,  136,
 /*  1160 */   113,  114,  115,  113,  114,  115,  104,  136,  136,  104,
 /*  1170 */   135,  136,  136,  136,  136,  113,  114,  115,  113,  114,
 /*  1180 */   115,  136,  135,  136,  104,  135,  136,  136,  136,  136,
 /*  1190 */   136,  136,  104,  113,  114,  115,  136,  135,  136,  104,
 /*  1200 */   135,  113,  114,  115,  136,  136,  136,  104,  113,  114,
 /*  1210 */   115,  136,  136,  136,  136,  135,  113,  114,  115,  136,
 /*  1220 */   136,  136,  136,  135,  136,  136,  136,  136,  136,  136,
 /*  1230 */   135,  104,  136,  136,  104,  136,  136,  104,  135,  136,
 /*  1240 */   113,  114,  115,  113,  114,  115,  113,  114,  115,  136,
 /*  1250 */   136,  136,  136,  136,  136,  136,  136,  136,  136,  136,
 /*  1260 */   136,  136,  135,  104,  136,  135,  104,  136,  135,  104,
 /*  1270 */   136,  136,  113,  114,  115,  113,  114,  115,  113,  114,
 /*  1280 */   115,  104,  136,  136,  136,  136,  136,  136,  136,  136,
 /*  1290 */   113,  114,  115,  136,  135,  136,  136,  135,  136,  136,
 /*  1300 */   135,  136,  136,  136,  136,  136,  136,  136,  136,  136,
 /*  1310 */   136,  136,  135,  100,  100,  100,  100,  100,  100,  100,
 /*  1320 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1330 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1340 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1350 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1360 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1370 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1380 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1390 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1400 */   100,  100,  100,  100,  100,  100,  100,  100,  100,  100,
 /*  1410 */   100,  100,  100,
};
#define YY_SHIFT_COUNT    (163)
#define YY_SHIFT_MIN      (0)
#define YY_SHIFT_MAX      (1113)
static const unsigned short int yy_shift_ofst[] = {
 /*     0 */   143,  127,  222,  287,  287,  287,  287,  287,  287,  287,
 /*    10 */   287,  287,  287,  287,  287,  287,  287,  287,  287,  287,
 /*    20 */   287,  287,  287,  287,  287,  287,  287,  244,  433,  266,
 /*    30 */   244,  143,  494,  494,    0,   64,  143,  589,  266,  589,
 /*    40 */   466,  466,  466,  529,  562,  266,  266,  266,  266,  266,
 /*    50 */   266,  624,  266,  266,  657,  266,  266,  266,  266,  266,
 /*    60 */   266,  266,  266,  266,  266,  179,  317,  317,  317,  317,
 /*    70 */   317,  645,  318,  386,  425, 1015, 1015,  118,   47, 1313,
 /*    80 */  1313, 1313, 1313,  114,  114,  200,  435,  129,  188,  234,
 /*    90 */   360,  468,  531,  506,  545,  823, 1032,  928, 1113,   25,
 /*   100 */    25,   25,  162,   25,   25,   25,   69,   25,   85,  128,
 /*   110 */    92,  105,  120,  136,  100,  183,  183,  176,  220,  174,
 /*   120 */   202,  275,  152,  207,  198,  219,  221,  208,  215,  217,
 /*   130 */   236,  238,  213,  267,  265,  262,  218,  273,  216,  224,
 /*   140 */   214,  225,  294,  295,  297,  272,  309,  324,  325,  249,
 /*   150 */   253,  307,  249,  331,  332,  338,  337,  335,  340,  342,
 /*   160 */   363,  293,  374,  373,
};
#define YY_REDUCE_COUNT (82)
#define YY_REDUCE_MIN   (-130)
#define YY_REDUCE_MAX   (1177)
static const short yy_reduce_ofst[] = {
 /*     0 */   640,  -97,  -33,  308,  467,  502,  586,  622,  655,  670,
 /*    10 */   682,  698,  710,  735,  747,  760,  775,  787,  803,  815,
 /*    20 */   840,  852,  865,  880,  892,  908,  920,  159,  945,  957,
 /*    30 */   227,  987,  528,  590,  -62,  -62,  584,  404,  722,  994,
 /*    40 */   560,  685,  790,  827,  895,  999, 1011, 1018, 1023, 1035,
 /*    50 */  1047, 1050, 1062, 1065, 1080, 1088, 1095, 1103, 1127, 1130,
 /*    60 */  1133, 1159, 1162, 1165, 1177,  -82, -112, -102,  -48,  -38,
 /*    70 */   -24,  -23, -130, -130, -130,  -98,  -87,  -59, -101,  -41,
 /*    80 */    46,   52,  -36,
};
static const YYACTIONTYPE yy_default[] = {
 /*     0 */   449,  443,  443,  443,  443,  443,  443,  443,  443,  443,
 /*    10 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  443,
 /*    20 */   443,  443,  443,  443,  443,  443,  443,  443,  473,  576,
 /*    30 */   443,  449,  580,  485,  581,  581,  449,  443,  443,  443,
 /*    40 */   443,  443,  443,  443,  443,  443,  443,  443,  477,  443,
 /*    50 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  443,
 /*    60 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  443,
 /*    70 */   443,  443,  443,  443,  443,  443,  443,  443,  455,  470,
 /*    80 */   508,  508,  576,  468,  493,  443,  443,  443,  471,  443,
 /*    90 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  488,
 /*   100 */   486,  476,  459,  512,  511,  510,  443,  566,  443,  443,
 /*   110 */   443,  443,  443,  588,  443,  545,  544,  540,  443,  532,
 /*   120 */   529,  443,  443,  443,  443,  443,  443,  491,  443,  443,
 /*   130 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  443,
 /*   140 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  592,
 /*   150 */   443,  443,  443,  443,  443,  443,  443,  443,  443,  443,
 /*   160 */   443,  601,  443,  443,
};
/********** End of lemon-generated parsing tables *****************************/

/* The next table maps tokens (terminal symbols) into fallback tokens.  
** If a construct like the following:
** 
**      %fallback ID X Y Z.
**
** appears in the grammar, then ID becomes a fallback token for X, Y,
** and Z.  Whenever one of the tokens X, Y, or Z is input to the parser
** but it does not parse, the type of the token is changed to ID and
** the parse is retried before an error is thrown.
**
** This feature can be used, for example, to cause some keywords in a language
** to revert to identifiers if they keyword does not apply in the context where
** it appears.
*/
#ifdef YYFALLBACK
static const YYCODETYPE yyFallback[] = {
    0,  /*          $ => nothing */
    0,  /*         ID => nothing */
    1,  /*     EDGEPT => ID */
    0,  /*         OF => nothing */
    0,  /*       PLUS => nothing */
    0,  /*      MINUS => nothing */
    0,  /*       STAR => nothing */
    0,  /*      SLASH => nothing */
    0,  /*    PERCENT => nothing */
    0,  /*     UMINUS => nothing */
    0,  /*        EOL => nothing */
    0,  /*     ASSIGN => nothing */
    0,  /*  PLACENAME => nothing */
    0,  /*      COLON => nothing */
    0,  /*     ASSERT => nothing */
    0,  /*         LP => nothing */
    0,  /*         EQ => nothing */
    0,  /*         RP => nothing */
    0,  /*     DEFINE => nothing */
    0,  /*  CODEBLOCK => nothing */
    0,  /*       FILL => nothing */
    0,  /*      COLOR => nothing */
    0,  /*  THICKNESS => nothing */
    0,  /*      PRINT => nothing */
    0,  /*     STRING => nothing */
    0,  /*      COMMA => nothing */
    0,  /*  CLASSNAME => nothing */
    0,  /*         LB => nothing */
    0,  /*         RB => nothing */
    0,  /*         UP => nothing */
    0,  /*       DOWN => nothing */
    0,  /*       LEFT => nothing */
    0,  /*      RIGHT => nothing */
    0,  /*      CLOSE => nothing */
    0,  /*       CHOP => nothing */
    0,  /*       FROM => nothing */
    0,  /*         TO => nothing */
    0,  /*       THEN => nothing */
    0,  /*    HEADING => nothing */
    0,  /*         GO => nothing */
    0,  /*         AT => nothing */
    0,  /*       WITH => nothing */
    0,  /*       SAME => nothing */
    0,  /*         AS => nothing */
    0,  /*        FIT => nothing */
    0,  /*     BEHIND => nothing */
    0,  /*      UNTIL => nothing */
    0,  /*       EVEN => nothing */
    0,  /*      DOT_E => nothing */
    0,  /*     HEIGHT => nothing */
    0,  /*      WIDTH => nothing */
    0,  /*     RADIUS => nothing */
    0,  /*   DIAMETER => nothing */
    0,  /*     DOTTED => nothing */
    0,  /*     DASHED => nothing */
    0,  /*         CW => nothing */
    0,  /*        CCW => nothing */
    0,  /*     LARROW => nothing */
    0,  /*     RARROW => nothing */
    0,  /*    LRARROW => nothing */
    0,  /*      INVIS => nothing */
    0,  /*      THICK => nothing */
    0,  /*       THIN => nothing */
    0,  /*      SOLID => nothing */
    0,  /*     CENTER => nothing */
    0,  /*      LJUST => nothing */
    0,  /*      RJUST => nothing */
    0,  /*      ABOVE => nothing */
    0,  /*      BELOW => nothing */
    0,  /*     ITALIC => nothing */
    0,  /*       BOLD => nothing */
    0,  /*       MONO => nothing */
    0,  /*    ALIGNED => nothing */
    0,  /*        BIG => nothing */
    0,  /*      SMALL => nothing */
    0,  /*        AND => nothing */
    0,  /*         LT => nothing */
    0,  /*         GT => nothing */
    0,  /*         ON => nothing */
    0,  /*        WAY => nothing */
    0,  /*    BETWEEN => nothing */
    0,  /*        THE => nothing */
    0,  /*        NTH => nothing */
    0,  /*     VERTEX => nothing */
    0,  /*        TOP => nothing */
    0,  /*     BOTTOM => nothing */
    0,  /*      START => nothing */
    0,  /*        END => nothing */
    0,  /*         IN => nothing */
    0,  /*       THIS => nothing */
    0,  /*      DOT_U => nothing */
    0,  /*       LAST => nothing */
    0,  /*     NUMBER => nothing */
    0,  /*      FUNC1 => nothing */
    0,  /*      FUNC2 => nothing */
    0,  /*       DIST => nothing */
    0,  /*     DOT_XY => nothing */
    0,  /*          X => nothing */
    0,  /*          Y => nothing */
    0,  /*      DOT_L => nothing */
};
#endif /* YYFALLBACK */

/* The following structure represents a single element of the
** parser's stack.  Information stored includes:
**
**   +  The state number for the parser at this level of the stack.
**
**   +  The value of the token stored at this level of the stack.
**      (In other words, the "major" token.)
**
**   +  The semantic value stored at this level of the stack.  This is
**      the information used by the action routines in the grammar.
**      It is sometimes called the "minor" token.
**
** After the "shift" half of a SHIFTREDUCE action, the stateno field
** actually contains the reduce action for the second half of the
** SHIFTREDUCE.
*/
struct yyStackEntry {
  YYACTIONTYPE stateno;  /* The state-number, or reduce action in SHIFTREDUCE */
  YYCODETYPE major;      /* The major token value.  This is the code
                         ** number for the token at this stack level */
  YYMINORTYPE minor;     /* The user-supplied minor token value.  This
                         ** is the value of the token  */
};
typedef struct yyStackEntry yyStackEntry;

/* The state of the parser is completely contained in an instance of
** the following structure */
struct yyParser {
  yyStackEntry *yytos;          /* Pointer to top element of the stack */
#ifdef YYTRACKMAXSTACKDEPTH
  int yyhwm;                    /* High-water mark of the stack */
#endif
#ifndef YYNOERRORRECOVERY
  int yyerrcnt;                 /* Shifts left before out of the error */
#endif
  pik_parserARG_SDECL                /* A place to hold %extra_argument */
  pik_parserCTX_SDECL                /* A place to hold %extra_context */
  yyStackEntry *yystackEnd;           /* Last entry in the stack */
  yyStackEntry *yystack;              /* The parser stack */
  yyStackEntry yystk0[YYSTACKDEPTH];  /* Initial stack space */
};
typedef struct yyParser yyParser;

#include <assert.h>
#ifndef NDEBUG
#include <stdio.h>
static FILE *yyTraceFILE = 0;
static char *yyTracePrompt = 0;
#endif /* NDEBUG */

#ifndef NDEBUG
/* 
** Turn parser tracing on by giving a stream to which to write the trace
** and a prompt to preface each trace message.  Tracing is turned off
** by making either argument NULL 
**
** Inputs:
** <ul>
** <li> A FILE* to which trace output should be written.
**      If NULL, then tracing is turned off.
** <li> A prefix string written at the beginning of every
**      line of trace output.  If NULL, then tracing is
**      turned off.
** </ul>
**
** Outputs:
** None.
*/
void pik_parserTrace(FILE *TraceFILE, char *zTracePrompt){
  yyTraceFILE = TraceFILE;
  yyTracePrompt = zTracePrompt;
  if( yyTraceFILE==0 ) yyTracePrompt = 0;
  else if( yyTracePrompt==0 ) yyTraceFILE = 0;
}
#endif /* NDEBUG */

#if defined(YYCOVERAGE) || !defined(NDEBUG)
/* For tracing shifts, the names of all terminals and nonterminals
** are required.  The following table supplies these names */
static const char *const yyTokenName[] = { 
  /*    0 */ "$",
  /*    1 */ "ID",
  /*    2 */ "EDGEPT",
  /*    3 */ "OF",
  /*    4 */ "PLUS",
  /*    5 */ "MINUS",
  /*    6 */ "STAR",
  /*    7 */ "SLASH",
  /*    8 */ "PERCENT",
  /*    9 */ "UMINUS",
  /*   10 */ "EOL",
  /*   11 */ "ASSIGN",
  /*   12 */ "PLACENAME",
  /*   13 */ "COLON",
  /*   14 */ "ASSERT",
  /*   15 */ "LP",
  /*   16 */ "EQ",
  /*   17 */ "RP",
  /*   18 */ "DEFINE",
  /*   19 */ "CODEBLOCK",
  /*   20 */ "FILL",
  /*   21 */ "COLOR",
  /*   22 */ "THICKNESS",
  /*   23 */ "PRINT",
  /*   24 */ "STRING",
  /*   25 */ "COMMA",
  /*   26 */ "CLASSNAME",
  /*   27 */ "LB",
  /*   28 */ "RB",
  /*   29 */ "UP",
  /*   30 */ "DOWN",
  /*   31 */ "LEFT",
  /*   32 */ "RIGHT",
  /*   33 */ "CLOSE",
  /*   34 */ "CHOP",
  /*   35 */ "FROM",
  /*   36 */ "TO",
  /*   37 */ "THEN",
  /*   38 */ "HEADING",
  /*   39 */ "GO",
  /*   40 */ "AT",
  /*   41 */ "WITH",
  /*   42 */ "SAME",
  /*   43 */ "AS",
  /*   44 */ "FIT",
  /*   45 */ "BEHIND",
  /*   46 */ "UNTIL",
  /*   47 */ "EVEN",
  /*   48 */ "DOT_E",
  /*   49 */ "HEIGHT",
  /*   50 */ "WIDTH",
  /*   51 */ "RADIUS",
  /*   52 */ "DIAMETER",
  /*   53 */ "DOTTED",
  /*   54 */ "DASHED",
  /*   55 */ "CW",
  /*   56 */ "CCW",
  /*   57 */ "LARROW",
  /*   58 */ "RARROW",
  /*   59 */ "LRARROW",
  /*   60 */ "INVIS",
  /*   61 */ "THICK",
  /*   62 */ "THIN",
  /*   63 */ "SOLID",
  /*   64 */ "CENTER",
  /*   65 */ "LJUST",
  /*   66 */ "RJUST",
  /*   67 */ "ABOVE",
  /*   68 */ "BELOW",
  /*   69 */ "ITALIC",
  /*   70 */ "BOLD",
  /*   71 */ "MONO",
  /*   72 */ "ALIGNED",
  /*   73 */ "BIG",
  /*   74 */ "SMALL",
  /*   75 */ "AND",
  /*   76 */ "LT",
  /*   77 */ "GT",
  /*   78 */ "ON",
  /*   79 */ "WAY",
  /*   80 */ "BETWEEN",
  /*   81 */ "THE",
  /*   82 */ "NTH",
  /*   83 */ "VERTEX",
  /*   84 */ "TOP",
  /*   85 */ "BOTTOM",
  /*   86 */ "START",
  /*   87 */ "END",
  /*   88 */ "IN",
  /*   89 */ "THIS",
  /*   90 */ "DOT_U",
  /*   91 */ "LAST",
  /*   92 */ "NUMBER",
  /*   93 */ "FUNC1",
  /*   94 */ "FUNC2",
  /*   95 */ "DIST",
  /*   96 */ "DOT_XY",
  /*   97 */ "X",
  /*   98 */ "Y",
  /*   99 */ "DOT_L",
  /*  100 */ "statement_list",
  /*  101 */ "statement",
  /*  102 */ "unnamed_statement",
  /*  103 */ "basetype",
  /*  104 */ "expr",
  /*  105 */ "numproperty",
  /*  106 */ "edge",
  /*  107 */ "direction",
  /*  108 */ "dashproperty",
  /*  109 */ "colorproperty",
  /*  110 */ "locproperty",
  /*  111 */ "position",
  /*  112 */ "place",
  /*  113 */ "object",
  /*  114 */ "objectname",
  /*  115 */ "nth",
  /*  116 */ "textposition",
  /*  117 */ "rvalue",
  /*  118 */ "lvalue",
  /*  119 */ "even",
  /*  120 */ "relexpr",
  /*  121 */ "optrelexpr",
  /*  122 */ "document",
  /*  123 */ "print",
  /*  124 */ "prlist",
  /*  125 */ "pritem",
  /*  126 */ "prsep",
  /*  127 */ "attribute_list",
  /*  128 */ "savelist",
  /*  129 */ "alist",
  /*  130 */ "attribute",
  /*  131 */ "go",
  /*  132 */ "boolproperty",
  /*  133 */ "withclause",
  /*  134 */ "between",
  /*  135 */ "place2",
};
#endif /* defined(YYCOVERAGE) || !defined(NDEBUG) */

#ifndef NDEBUG
/* For tracing reduce actions, the names of all rules are required.
*/
static const char *const yyRuleName[] = {
 /*   0 */ "document ::= statement_list",
 /*   1 */ "statement_list ::= statement",
 /*   2 */ "statement_list ::= statement_list EOL statement",
 /*   3 */ "statement ::=",
 /*   4 */ "statement ::= direction",
 /*   5 */ "statement ::= lvalue ASSIGN rvalue",
 /*   6 */ "statement ::= PLACENAME COLON unnamed_statement",
 /*   7 */ "statement ::= PLACENAME COLON position",
 /*   8 */ "statement ::= unnamed_statement",
 /*   9 */ "statement ::= print prlist",
 /*  10 */ "statement ::= ASSERT LP expr EQ expr RP",
 /*  11 */ "statement ::= ASSERT LP position EQ position RP",
 /*  12 */ "statement ::= DEFINE ID CODEBLOCK",
 /*  13 */ "rvalue ::= PLACENAME",
 /*  14 */ "pritem ::= FILL",
 /*  15 */ "pritem ::= COLOR",
 /*  16 */ "pritem ::= THICKNESS",
 /*  17 */ "pritem ::= rvalue",
 /*  18 */ "pritem ::= STRING",
 /*  19 */ "prsep ::= COMMA",
 /*  20 */ "unnamed_statement ::= basetype attribute_list",
 /*  21 */ "basetype ::= CLASSNAME",
 /*  22 */ "basetype ::= STRING textposition",
 /*  23 */ "basetype ::= LB savelist statement_list RB",
 /*  24 */ "savelist ::=",
 /*  25 */ "relexpr ::= expr",
 /*  26 */ "relexpr ::= expr PERCENT",
 /*  27 */ "optrelexpr ::=",
 /*  28 */ "attribute_list ::= relexpr alist",
 /*  29 */ "attribute ::= numproperty relexpr",
 /*  30 */ "attribute ::= dashproperty expr",
 /*  31 */ "attribute ::= dashproperty",
 /*  32 */ "attribute ::= colorproperty rvalue",
 /*  33 */ "attribute ::= go direction optrelexpr",
 /*  34 */ "attribute ::= go direction even position",
 /*  35 */ "attribute ::= CLOSE",
 /*  36 */ "attribute ::= CHOP",
 /*  37 */ "attribute ::= FROM position",
 /*  38 */ "attribute ::= TO position",
 /*  39 */ "attribute ::= THEN",
 /*  40 */ "attribute ::= THEN optrelexpr HEADING expr",
 /*  41 */ "attribute ::= THEN optrelexpr EDGEPT",
 /*  42 */ "attribute ::= GO optrelexpr HEADING expr",
 /*  43 */ "attribute ::= GO optrelexpr EDGEPT",
 /*  44 */ "attribute ::= AT position",
 /*  45 */ "attribute ::= SAME",
 /*  46 */ "attribute ::= SAME AS object",
 /*  47 */ "attribute ::= STRING textposition",
 /*  48 */ "attribute ::= FIT",
 /*  49 */ "attribute ::= BEHIND object",
 /*  50 */ "withclause ::= DOT_E edge AT position",
 /*  51 */ "withclause ::= edge AT position",
 /*  52 */ "numproperty ::= HEIGHT|WIDTH|RADIUS|DIAMETER|THICKNESS",
 /*  53 */ "boolproperty ::= CW",
 /*  54 */ "boolproperty ::= CCW",
 /*  55 */ "boolproperty ::= LARROW",
 /*  56 */ "boolproperty ::= RARROW",
 /*  57 */ "boolproperty ::= LRARROW",
 /*  58 */ "boolproperty ::= INVIS",
 /*  59 */ "boolproperty ::= THICK",
 /*  60 */ "boolproperty ::= THIN",
 /*  61 */ "boolproperty ::= SOLID",
 /*  62 */ "textposition ::=",
 /*  63 */ "textposition ::= textposition CENTER|LJUST|RJUST|ABOVE|BELOW|ITALIC|BOLD|MONO|ALIGNED|BIG|SMALL",
 /*  64 */ "position ::= expr COMMA expr",
 /*  65 */ "position ::= place PLUS expr COMMA expr",
 /*  66 */ "position ::= place MINUS expr COMMA expr",
 /*  67 */ "position ::= place PLUS LP expr COMMA expr RP",
 /*  68 */ "position ::= place MINUS LP expr COMMA expr RP",
 /*  69 */ "position ::= LP position COMMA position RP",
 /*  70 */ "position ::= LP position RP",
 /*  71 */ "position ::= expr between position AND position",
 /*  72 */ "position ::= expr LT position COMMA position GT",
 /*  73 */ "position ::= expr ABOVE position",
 /*  74 */ "position ::= expr BELOW position",
 /*  75 */ "position ::= expr LEFT OF position",
 /*  76 */ "position ::= expr RIGHT OF position",
 /*  77 */ "position ::= expr ON HEADING EDGEPT OF position",
 /*  78 */ "position ::= expr HEADING EDGEPT OF position",
 /*  79 */ "position ::= expr EDGEPT OF position",
 /*  80 */ "position ::= expr ON HEADING expr FROM position",
 /*  81 */ "position ::= expr HEADING expr FROM position",
 /*  82 */ "place ::= edge OF object",
 /*  83 */ "place2 ::= object",
 /*  84 */ "place2 ::= object DOT_E edge",
 /*  85 */ "place2 ::= NTH VERTEX OF object",
 /*  86 */ "object ::= nth",
 /*  87 */ "object ::= nth OF|IN object",
 /*  88 */ "objectname ::= THIS",
 /*  89 */ "objectname ::= PLACENAME",
 /*  90 */ "objectname ::= objectname DOT_U PLACENAME",
 /*  91 */ "nth ::= NTH CLASSNAME",
 /*  92 */ "nth ::= NTH LAST CLASSNAME",
 /*  93 */ "nth ::= LAST CLASSNAME",
 /*  94 */ "nth ::= LAST",
 /*  95 */ "nth ::= NTH LB RB",
 /*  96 */ "nth ::= NTH LAST LB RB",
 /*  97 */ "nth ::= LAST LB RB",
 /*  98 */ "expr ::= expr PLUS expr",
 /*  99 */ "expr ::= expr MINUS expr",
 /* 100 */ "expr ::= expr STAR expr",
 /* 101 */ "expr ::= expr SLASH expr",
 /* 102 */ "expr ::= MINUS expr",
 /* 103 */ "expr ::= PLUS expr",
 /* 104 */ "expr ::= LP expr RP",
 /* 105 */ "expr ::= LP FILL|COLOR|THICKNESS RP",
 /* 106 */ "expr ::= NUMBER",
 /* 107 */ "expr ::= ID",
 /* 108 */ "expr ::= FUNC1 LP expr RP",
 /* 109 */ "expr ::= FUNC2 LP expr COMMA expr RP",
 /* 110 */ "expr ::= DIST LP position COMMA position RP",
 /* 111 */ "expr ::= place2 DOT_XY X",
 /* 112 */ "expr ::= place2 DOT_XY Y",
 /* 113 */ "expr ::= object DOT_L numproperty",
 /* 114 */ "expr ::= object DOT_L dashproperty",
 /* 115 */ "expr ::= object DOT_L colorproperty",
 /* 116 */ "lvalue ::= ID",
 /* 117 */ "lvalue ::= FILL",
 /* 118 */ "lvalue ::= COLOR",
 /* 119 */ "lvalue ::= THICKNESS",
 /* 120 */ "rvalue ::= expr",
 /* 121 */ "print ::= PRINT",
 /* 122 */ "prlist ::= pritem",
 /* 123 */ "prlist ::= prlist prsep pritem",
 /* 124 */ "direction ::= UP",
 /* 125 */ "direction ::= DOWN",
 /* 126 */ "direction ::= LEFT",
 /* 127 */ "direction ::= RIGHT",
 /* 128 */ "optrelexpr ::= relexpr",
 /* 129 */ "attribute_list ::= alist",
 /* 130 */ "alist ::=",
 /* 131 */ "alist ::= alist attribute",
 /* 132 */ "attribute ::= boolproperty",
 /* 133 */ "attribute ::= WITH withclause",
 /* 134 */ "go ::= GO",
 /* 135 */ "go ::=",
 /* 136 */ "even ::= UNTIL EVEN WITH",
 /* 137 */ "even ::= EVEN WITH",
 /* 138 */ "dashproperty ::= DOTTED",
 /* 139 */ "dashproperty ::= DASHED",
 /* 140 */ "colorproperty ::= FILL",
 /* 141 */ "colorproperty ::= COLOR",
 /* 142 */ "position ::= place",
 /* 143 */ "between ::= WAY BETWEEN",
 /* 144 */ "between ::= BETWEEN",
 /* 145 */ "between ::= OF THE WAY BETWEEN",
 /* 146 */ "place ::= place2",
 /* 147 */ "edge ::= CENTER",
 /* 148 */ "edge ::= EDGEPT",
 /* 149 */ "edge ::= TOP",
 /* 150 */ "edge ::= BOTTOM",
 /* 151 */ "edge ::= START",
 /* 152 */ "edge ::= END",
 /* 153 */ "edge ::= RIGHT",
 /* 154 */ "edge ::= LEFT",
 /* 155 */ "object ::= objectname",
};
#endif /* NDEBUG */


#if YYGROWABLESTACK
/*
** Try to increase the size of the parser stack.  Return the number
** of errors.  Return 0 on success.
*/
static int yyGrowStack(yyParser *p){
  int oldSize = 1 + (int)(p->yystackEnd - p->yystack);
  int newSize;
  int idx;
  yyStackEntry *pNew;

  newSize = oldSize*2 + 100;
  idx = (int)(p->yytos - p->yystack);
  if( p->yystack==p->yystk0 ){
    pNew = YYREALLOC(0, newSize*sizeof(pNew[0]));
    if( pNew==0 ) return 1;
    memcpy(pNew, p->yystack, oldSize*sizeof(pNew[0]));
  }else{
    pNew = YYREALLOC(p->yystack, newSize*sizeof(pNew[0]));
    if( pNew==0 ) return 1;
  }
  p->yystack = pNew;
  p->yytos = &p->yystack[idx];
#ifndef NDEBUG
  if( yyTraceFILE ){
    fprintf(yyTraceFILE,"%sStack grows from %d to %d entries.\n",
            yyTracePrompt, oldSize, newSize);
  }
#endif
  p->yystackEnd = &p->yystack[newSize-1];
  return 0;
}
#endif /* YYGROWABLESTACK */

#if !YYGROWABLESTACK
/* For builds that do no have a growable stack, yyGrowStack always
** returns an error.
*/
# define yyGrowStack(X) 1
#endif

/* Datatype of the argument to the memory allocated passed as the
** second argument to pik_parserAlloc() below.  This can be changed by
** putting an appropriate #define in the %include section of the input
** grammar.
*/
#ifndef YYMALLOCARGTYPE
# define YYMALLOCARGTYPE size_t
#endif

/* Initialize a new parser that has already been allocated.
*/
void pik_parserInit(void *yypRawParser pik_parserCTX_PDECL){
  yyParser *yypParser = (yyParser*)yypRawParser;
  pik_parserCTX_STORE
#ifdef YYTRACKMAXSTACKDEPTH
  yypParser->yyhwm = 0;
#endif
  yypParser->yystack = yypParser->yystk0;
  yypParser->yystackEnd = &yypParser->yystack[YYSTACKDEPTH-1];
#ifndef YYNOERRORRECOVERY
  yypParser->yyerrcnt = -1;
#endif
  yypParser->yytos = yypParser->yystack;
  yypParser->yystack[0].stateno = 0;
  yypParser->yystack[0].major = 0;
}

#ifndef pik_parser_ENGINEALWAYSONSTACK
/* 
** This function allocates a new parser.
** The only argument is a pointer to a function which works like
** malloc.
**
** Inputs:
** A pointer to the function used to allocate memory.
**
** Outputs:
** A pointer to a parser.  This pointer is used in subsequent calls
** to pik_parser and pik_parserFree.
*/
void *pik_parserAlloc(void *(*mallocProc)(YYMALLOCARGTYPE) pik_parserCTX_PDECL){
  yyParser *yypParser;
  yypParser = (yyParser*)(*mallocProc)( (YYMALLOCARGTYPE)sizeof(yyParser) );
  if( yypParser ){
    pik_parserCTX_STORE
    pik_parserInit(yypParser pik_parserCTX_PARAM);
  }
  return (void*)yypParser;
}
#endif /* pik_parser_ENGINEALWAYSONSTACK */


/* The following function deletes the "minor type" or semantic value
** associated with a symbol.  The symbol can be either a terminal
** or nonterminal. "yymajor" is the symbol code, and "yypminor" is
** a pointer to the value to be deleted.  The code used to do the 
** deletions is derived from the %destructor and/or %token_destructor
** directives of the input grammar.
*/
static void yy_destructor(
  yyParser *yypParser,    /* The parser */
  YYCODETYPE yymajor,     /* Type code for object to destroy */
  YYMINORTYPE *yypminor   /* The object to be destroyed */
){
  pik_parserARG_FETCH
  pik_parserCTX_FETCH
  switch( yymajor ){
    /* Here is inserted the actions which take place when a
    ** terminal or non-terminal is destroyed.  This can happen
    ** when the symbol is popped from the stack during a
    ** reduce or during error processing or when a parser is 
    ** being destroyed before it is finished parsing.
    **
    ** Note: during a reduce, the only symbols destroyed are those
    ** which appear on the RHS of the rule, but which are *not* used
    ** inside the C code.
    */
/********* Begin destructor definitions ***************************************/
    case 100: /* statement_list */
{
#line 511 "pikchr.y"
pik_elist_free(p,(yypminor->yy235));
#line 1777 "pikchr.c"
}
      break;
    case 101: /* statement */
    case 102: /* unnamed_statement */
    case 103: /* basetype */
{
#line 513 "pikchr.y"
pik_elem_free(p,(yypminor->yy162));
#line 1786 "pikchr.c"
}
      break;
/********* End destructor definitions *****************************************/
    default:  break;   /* If no destructor action specified: do nothing */
  }
}

/*
** Pop the parser's stack once.
**
** If there is a destructor routine associated with the token which
** is popped from the stack, then call it.
*/
static void yy_pop_parser_stack(yyParser *pParser){
  yyStackEntry *yytos;
  assert( pParser->yytos!=0 );
  assert( pParser->yytos > pParser->yystack );
  yytos = pParser->yytos--;
#ifndef NDEBUG
  if( yyTraceFILE ){
    fprintf(yyTraceFILE,"%sPopping %s\n",
      yyTracePrompt,
      yyTokenName[yytos->major]);
  }
#endif
  yy_destructor(pParser, yytos->major, &yytos->minor);
}

/*
** Clear all secondary memory allocations from the parser
*/
void pik_parserFinalize(void *p){
  yyParser *pParser = (yyParser*)p;

  /* In-lined version of calling yy_pop_parser_stack() for each
  ** element left in the stack */
  yyStackEntry *yytos = pParser->yytos;
  while( yytos>pParser->yystack ){
#ifndef NDEBUG
    if( yyTraceFILE ){
      fprintf(yyTraceFILE,"%sPopping %s\n",
        yyTracePrompt,
        yyTokenName[yytos->major]);
    }
#endif
    if( yytos->major>=YY_MIN_DSTRCTR ){
      yy_destructor(pParser, yytos->major, &yytos->minor);
    }
    yytos--;
  }

#if YYGROWABLESTACK
  if( pParser->yystack!=pParser->yystk0 ) YYFREE(pParser->yystack);
#endif
}

#ifndef pik_parser_ENGINEALWAYSONSTACK
/* 
** Deallocate and destroy a parser.  Destructors are called for
** all stack elements before shutting the parser down.
**
** If the YYPARSEFREENEVERNULL macro exists (for example because it
** is defined in a %include section of the input grammar) then it is
** assumed that the input pointer is never NULL.
*/
void pik_parserFree(
  void *p,                    /* The parser to be deleted */
  void (*freeProc)(void*)     /* Function used to reclaim memory */
){
#ifndef YYPARSEFREENEVERNULL
  if( p==0 ) return;
#endif
  pik_parserFinalize(p);
  (*freeProc)(p);
}
#endif /* pik_parser_ENGINEALWAYSONSTACK */

/*
** Return the peak depth of the stack for a parser.
*/
#ifdef YYTRACKMAXSTACKDEPTH
int pik_parserStackPeak(void *p){
  yyParser *pParser = (yyParser*)p;
  return pParser->yyhwm;
}
#endif

/* This array of booleans keeps track of the parser statement
** coverage.  The element yycoverage[X][Y] is set when the parser
** is in state X and has a lookahead token Y.  In a well-tested
** systems, every element of this matrix should end up being set.
*/
#if defined(YYCOVERAGE)
static unsigned char yycoverage[YYNSTATE][YYNTOKEN];
#endif

/*
** Write into out a description of every state/lookahead combination that
**
**   (1)  has not been used by the parser, and
**   (2)  is not a syntax error.
**
** Return the number of missed state/lookahead combinations.
*/
#if defined(YYCOVERAGE)
int pik_parserCoverage(FILE *out){
  int stateno, iLookAhead, i;
  int nMissed = 0;
  for(stateno=0; stateno<YYNSTATE; stateno++){
    i = yy_shift_ofst[stateno];
    for(iLookAhead=0; iLookAhead<YYNTOKEN; iLookAhead++){
      if( yy_lookahead[i+iLookAhead]!=iLookAhead ) continue;
      if( yycoverage[stateno][iLookAhead]==0 ) nMissed++;
      if( out ){
        fprintf(out,"State %d lookahead %s %s\n", stateno,
                yyTokenName[iLookAhead],
                yycoverage[stateno][iLookAhead] ? "ok" : "missed");
      }
    }
  }
  return nMissed;
}
#endif

/*
** Find the appropriate action for a parser given the terminal
** look-ahead token iLookAhead.
*/
static YYACTIONTYPE yy_find_shift_action(
  YYCODETYPE iLookAhead,    /* The look-ahead token */
  YYACTIONTYPE stateno      /* Current state number */
){
  int i;

  if( stateno>YY_MAX_SHIFT ) return stateno;
  assert( stateno <= YY_SHIFT_COUNT );
#if defined(YYCOVERAGE)
  yycoverage[stateno][iLookAhead] = 1;
#endif
  do{
    i = yy_shift_ofst[stateno];
    assert( i>=0 );
    assert( i<=YY_ACTTAB_COUNT );
    assert( i+YYNTOKEN<=(int)YY_NLOOKAHEAD );
    assert( iLookAhead!=YYNOCODE );
    assert( iLookAhead < YYNTOKEN );
    i += iLookAhead;
    assert( i<(int)YY_NLOOKAHEAD );
    if( yy_lookahead[i]!=iLookAhead ){
#ifdef YYFALLBACK
      YYCODETYPE iFallback;            /* Fallback token */
      assert( iLookAhead<sizeof(yyFallback)/sizeof(yyFallback[0]) );
      iFallback = yyFallback[iLookAhead];
      if( iFallback!=0 ){
#ifndef NDEBUG
        if( yyTraceFILE ){
          fprintf(yyTraceFILE, "%sFALLBACK %s => %s\n",
             yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]);
        }
#endif
        assert( yyFallback[iFallback]==0 ); /* Fallback loop must terminate */
        iLookAhead = iFallback;
        continue;
      }
#endif
#ifdef YYWILDCARD
      {
        int j = i - iLookAhead + YYWILDCARD;
        assert( j<(int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])) );
        if( yy_lookahead[j]==YYWILDCARD && iLookAhead>0 ){
#ifndef NDEBUG
          if( yyTraceFILE ){
            fprintf(yyTraceFILE, "%sWILDCARD %s => %s\n",
               yyTracePrompt, yyTokenName[iLookAhead],
               yyTokenName[YYWILDCARD]);
          }
#endif /* NDEBUG */
          return yy_action[j];
        }
      }
#endif /* YYWILDCARD */
      return yy_default[stateno];
    }else{
      assert( i>=0 && i<(int)(sizeof(yy_action)/sizeof(yy_action[0])) );
      return yy_action[i];
    }
  }while(1);
}

/*
** Find the appropriate action for a parser given the non-terminal
** look-ahead token iLookAhead.
*/
static YYACTIONTYPE yy_find_reduce_action(
  YYACTIONTYPE stateno,     /* Current state number */
  YYCODETYPE iLookAhead     /* The look-ahead token */
){
  int i;
#ifdef YYERRORSYMBOL
  if( stateno>YY_REDUCE_COUNT ){
    return yy_default[stateno];
  }
#else
  assert( stateno<=YY_REDUCE_COUNT );
#endif
  i = yy_reduce_ofst[stateno];
  assert( iLookAhead!=YYNOCODE );
  i += iLookAhead;
#ifdef YYERRORSYMBOL
  if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){
    return yy_default[stateno];
  }
#else
  assert( i>=0 && i<YY_ACTTAB_COUNT );
  assert( yy_lookahead[i]==iLookAhead );
#endif
  return yy_action[i];
}

/*
** The following routine is called if the stack overflows.
*/
static void yyStackOverflow(yyParser *yypParser){
   pik_parserARG_FETCH
   pik_parserCTX_FETCH
#ifndef NDEBUG
   if( yyTraceFILE ){
     fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt);
   }
#endif
   while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser);
   /* Here code is inserted which will execute if the parser
   ** stack every overflows */
/******** Begin %stack_overflow code ******************************************/
#line 545 "pikchr.y"

  pik_error(p, 0, "parser stack overflow");
#line 2024 "pikchr.c"
/******** End %stack_overflow code ********************************************/
   pik_parserARG_STORE /* Suppress warning about unused %extra_argument var */
   pik_parserCTX_STORE
}

/*
** Print tracing information for a SHIFT action
*/
#ifndef NDEBUG
static void yyTraceShift(yyParser *yypParser, int yyNewState, const char *zTag){
  if( yyTraceFILE ){
    if( yyNewState<YYNSTATE ){
      fprintf(yyTraceFILE,"%s%s '%s', go to state %d\n",
         yyTracePrompt, zTag, yyTokenName[yypParser->yytos->major],
         yyNewState);
    }else{
      fprintf(yyTraceFILE,"%s%s '%s', pending reduce %d\n",
         yyTracePrompt, zTag, yyTokenName[yypParser->yytos->major],
         yyNewState - YY_MIN_REDUCE);
    }
  }
}
#else
# define yyTraceShift(X,Y,Z)
#endif

/*
** Perform a shift action.
*/
static void yy_shift(
  yyParser *yypParser,          /* The parser to be shifted */
  YYACTIONTYPE yyNewState,      /* The new state to shift in */
  YYCODETYPE yyMajor,           /* The major token to shift in */
  pik_parserTOKENTYPE yyMinor        /* The minor token to shift in */
){
  yyStackEntry *yytos;
  yypParser->yytos++;
#ifdef YYTRACKMAXSTACKDEPTH
  if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){
    yypParser->yyhwm++;
    assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack) );
  }
#endif
  yytos = yypParser->yytos;
  if( yytos>yypParser->yystackEnd ){
    if( yyGrowStack(yypParser) ){
      yypParser->yytos--;
      yyStackOverflow(yypParser);
      return;
    }
    yytos = yypParser->yytos;
    assert( yytos <= yypParser->yystackEnd );
  }
  if( yyNewState > YY_MAX_SHIFT ){
    yyNewState += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE;
  }
  yytos->stateno = yyNewState;
  yytos->major = yyMajor;
  yytos->minor.yy0 = yyMinor;
  yyTraceShift(yypParser, yyNewState, "Shift");
}

/* For rule J, yyRuleInfoLhs[J] contains the symbol on the left-hand side
** of that rule */
static const YYCODETYPE yyRuleInfoLhs[] = {
   122,  /* (0) document ::= statement_list */
   100,  /* (1) statement_list ::= statement */
   100,  /* (2) statement_list ::= statement_list EOL statement */
   101,  /* (3) statement ::= */
   101,  /* (4) statement ::= direction */
   101,  /* (5) statement ::= lvalue ASSIGN rvalue */
   101,  /* (6) statement ::= PLACENAME COLON unnamed_statement */
   101,  /* (7) statement ::= PLACENAME COLON position */
   101,  /* (8) statement ::= unnamed_statement */
   101,  /* (9) statement ::= print prlist */
   101,  /* (10) statement ::= ASSERT LP expr EQ expr RP */
   101,  /* (11) statement ::= ASSERT LP position EQ position RP */
   101,  /* (12) statement ::= DEFINE ID CODEBLOCK */
   117,  /* (13) rvalue ::= PLACENAME */
   125,  /* (14) pritem ::= FILL */
   125,  /* (15) pritem ::= COLOR */
   125,  /* (16) pritem ::= THICKNESS */
   125,  /* (17) pritem ::= rvalue */
   125,  /* (18) pritem ::= STRING */
   126,  /* (19) prsep ::= COMMA */
   102,  /* (20) unnamed_statement ::= basetype attribute_list */
   103,  /* (21) basetype ::= CLASSNAME */
   103,  /* (22) basetype ::= STRING textposition */
   103,  /* (23) basetype ::= LB savelist statement_list RB */
   128,  /* (24) savelist ::= */
   120,  /* (25) relexpr ::= expr */
   120,  /* (26) relexpr ::= expr PERCENT */
   121,  /* (27) optrelexpr ::= */
   127,  /* (28) attribute_list ::= relexpr alist */
   130,  /* (29) attribute ::= numproperty relexpr */
   130,  /* (30) attribute ::= dashproperty expr */
   130,  /* (31) attribute ::= dashproperty */
   130,  /* (32) attribute ::= colorproperty rvalue */
   130,  /* (33) attribute ::= go direction optrelexpr */
   130,  /* (34) attribute ::= go direction even position */
   130,  /* (35) attribute ::= CLOSE */
   130,  /* (36) attribute ::= CHOP */
   130,  /* (37) attribute ::= FROM position */
   130,  /* (38) attribute ::= TO position */
   130,  /* (39) attribute ::= THEN */
   130,  /* (40) attribute ::= THEN optrelexpr HEADING expr */
   130,  /* (41) attribute ::= THEN optrelexpr EDGEPT */
   130,  /* (42) attribute ::= GO optrelexpr HEADING expr */
   130,  /* (43) attribute ::= GO optrelexpr EDGEPT */
   130,  /* (44) attribute ::= AT position */
   130,  /* (45) attribute ::= SAME */
   130,  /* (46) attribute ::= SAME AS object */
   130,  /* (47) attribute ::= STRING textposition */
   130,  /* (48) attribute ::= FIT */
   130,  /* (49) attribute ::= BEHIND object */
   133,  /* (50) withclause ::= DOT_E edge AT position */
   133,  /* (51) withclause ::= edge AT position */
   105,  /* (52) numproperty ::= HEIGHT|WIDTH|RADIUS|DIAMETER|THICKNESS */
   132,  /* (53) boolproperty ::= CW */
   132,  /* (54) boolproperty ::= CCW */
   132,  /* (55) boolproperty ::= LARROW */
   132,  /* (56) boolproperty ::= RARROW */
   132,  /* (57) boolproperty ::= LRARROW */
   132,  /* (58) boolproperty ::= INVIS */
   132,  /* (59) boolproperty ::= THICK */
   132,  /* (60) boolproperty ::= THIN */
   132,  /* (61) boolproperty ::= SOLID */
   116,  /* (62) textposition ::= */
   116,  /* (63) textposition ::= textposition CENTER|LJUST|RJUST|ABOVE|BELOW|ITALIC|BOLD|MONO|ALIGNED|BIG|SMALL */
   111,  /* (64) position ::= expr COMMA expr */
   111,  /* (65) position ::= place PLUS expr COMMA expr */
   111,  /* (66) position ::= place MINUS expr COMMA expr */
   111,  /* (67) position ::= place PLUS LP expr COMMA expr RP */
   111,  /* (68) position ::= place MINUS LP expr COMMA expr RP */
   111,  /* (69) position ::= LP position COMMA position RP */
   111,  /* (70) position ::= LP position RP */
   111,  /* (71) position ::= expr between position AND position */
   111,  /* (72) position ::= expr LT position COMMA position GT */
   111,  /* (73) position ::= expr ABOVE position */
   111,  /* (74) position ::= expr BELOW position */
   111,  /* (75) position ::= expr LEFT OF position */
   111,  /* (76) position ::= expr RIGHT OF position */
   111,  /* (77) position ::= expr ON HEADING EDGEPT OF position */
   111,  /* (78) position ::= expr HEADING EDGEPT OF position */
   111,  /* (79) position ::= expr EDGEPT OF position */
   111,  /* (80) position ::= expr ON HEADING expr FROM position */
   111,  /* (81) position ::= expr HEADING expr FROM position */
   112,  /* (82) place ::= edge OF object */
   135,  /* (83) place2 ::= object */
   135,  /* (84) place2 ::= object DOT_E edge */
   135,  /* (85) place2 ::= NTH VERTEX OF object */
   113,  /* (86) object ::= nth */
   113,  /* (87) object ::= nth OF|IN object */
   114,  /* (88) objectname ::= THIS */
   114,  /* (89) objectname ::= PLACENAME */
   114,  /* (90) objectname ::= objectname DOT_U PLACENAME */
   115,  /* (91) nth ::= NTH CLASSNAME */
   115,  /* (92) nth ::= NTH LAST CLASSNAME */
   115,  /* (93) nth ::= LAST CLASSNAME */
   115,  /* (94) nth ::= LAST */
   115,  /* (95) nth ::= NTH LB RB */
   115,  /* (96) nth ::= NTH LAST LB RB */
   115,  /* (97) nth ::= LAST LB RB */
   104,  /* (98) expr ::= expr PLUS expr */
   104,  /* (99) expr ::= expr MINUS expr */
   104,  /* (100) expr ::= expr STAR expr */
   104,  /* (101) expr ::= expr SLASH expr */
   104,  /* (102) expr ::= MINUS expr */
   104,  /* (103) expr ::= PLUS expr */
   104,  /* (104) expr ::= LP expr RP */
   104,  /* (105) expr ::= LP FILL|COLOR|THICKNESS RP */
   104,  /* (106) expr ::= NUMBER */
   104,  /* (107) expr ::= ID */
   104,  /* (108) expr ::= FUNC1 LP expr RP */
   104,  /* (109) expr ::= FUNC2 LP expr COMMA expr RP */
   104,  /* (110) expr ::= DIST LP position COMMA position RP */
   104,  /* (111) expr ::= place2 DOT_XY X */
   104,  /* (112) expr ::= place2 DOT_XY Y */
   104,  /* (113) expr ::= object DOT_L numproperty */
   104,  /* (114) expr ::= object DOT_L dashproperty */
   104,  /* (115) expr ::= object DOT_L colorproperty */
   118,  /* (116) lvalue ::= ID */
   118,  /* (117) lvalue ::= FILL */
   118,  /* (118) lvalue ::= COLOR */
   118,  /* (119) lvalue ::= THICKNESS */
   117,  /* (120) rvalue ::= expr */
   123,  /* (121) print ::= PRINT */
   124,  /* (122) prlist ::= pritem */
   124,  /* (123) prlist ::= prlist prsep pritem */
   107,  /* (124) direction ::= UP */
   107,  /* (125) direction ::= DOWN */
   107,  /* (126) direction ::= LEFT */
   107,  /* (127) direction ::= RIGHT */
   121,  /* (128) optrelexpr ::= relexpr */
   127,  /* (129) attribute_list ::= alist */
   129,  /* (130) alist ::= */
   129,  /* (131) alist ::= alist attribute */
   130,  /* (132) attribute ::= boolproperty */
   130,  /* (133) attribute ::= WITH withclause */
   131,  /* (134) go ::= GO */
   131,  /* (135) go ::= */
   119,  /* (136) even ::= UNTIL EVEN WITH */
   119,  /* (137) even ::= EVEN WITH */
   108,  /* (138) dashproperty ::= DOTTED */
   108,  /* (139) dashproperty ::= DASHED */
   109,  /* (140) colorproperty ::= FILL */
   109,  /* (141) colorproperty ::= COLOR */
   111,  /* (142) position ::= place */
   134,  /* (143) between ::= WAY BETWEEN */
   134,  /* (144) between ::= BETWEEN */
   134,  /* (145) between ::= OF THE WAY BETWEEN */
   112,  /* (146) place ::= place2 */
   106,  /* (147) edge ::= CENTER */
   106,  /* (148) edge ::= EDGEPT */
   106,  /* (149) edge ::= TOP */
   106,  /* (150) edge ::= BOTTOM */
   106,  /* (151) edge ::= START */
   106,  /* (152) edge ::= END */
   106,  /* (153) edge ::= RIGHT */
   106,  /* (154) edge ::= LEFT */
   113,  /* (155) object ::= objectname */
};

/* For rule J, yyRuleInfoNRhs[J] contains the negative of the number
** of symbols on the right-hand side of that rule. */
static const signed char yyRuleInfoNRhs[] = {
   -1,  /* (0) document ::= statement_list */
   -1,  /* (1) statement_list ::= statement */
   -3,  /* (2) statement_list ::= statement_list EOL statement */
    0,  /* (3) statement ::= */
   -1,  /* (4) statement ::= direction */
   -3,  /* (5) statement ::= lvalue ASSIGN rvalue */
   -3,  /* (6) statement ::= PLACENAME COLON unnamed_statement */
   -3,  /* (7) statement ::= PLACENAME COLON position */
   -1,  /* (8) statement ::= unnamed_statement */
   -2,  /* (9) statement ::= print prlist */
   -6,  /* (10) statement ::= ASSERT LP expr EQ expr RP */
   -6,  /* (11) statement ::= ASSERT LP position EQ position RP */
   -3,  /* (12) statement ::= DEFINE ID CODEBLOCK */
   -1,  /* (13) rvalue ::= PLACENAME */
   -1,  /* (14) pritem ::= FILL */
   -1,  /* (15) pritem ::= COLOR */
   -1,  /* (16) pritem ::= THICKNESS */
   -1,  /* (17) pritem ::= rvalue */
   -1,  /* (18) pritem ::= STRING */
   -1,  /* (19) prsep ::= COMMA */
   -2,  /* (20) unnamed_statement ::= basetype attribute_list */
   -1,  /* (21) basetype ::= CLASSNAME */
   -2,  /* (22) basetype ::= STRING textposition */
   -4,  /* (23) basetype ::= LB savelist statement_list RB */
    0,  /* (24) savelist ::= */
   -1,  /* (25) relexpr ::= expr */
   -2,  /* (26) relexpr ::= expr PERCENT */
    0,  /* (27) optrelexpr ::= */
   -2,  /* (28) attribute_list ::= relexpr alist */
   -2,  /* (29) attribute ::= numproperty relexpr */
   -2,  /* (30) attribute ::= dashproperty expr */
   -1,  /* (31) attribute ::= dashproperty */
   -2,  /* (32) attribute ::= colorproperty rvalue */
   -3,  /* (33) attribute ::= go direction optrelexpr */
   -4,  /* (34) attribute ::= go direction even position */
   -1,  /* (35) attribute ::= CLOSE */
   -1,  /* (36) attribute ::= CHOP */
   -2,  /* (37) attribute ::= FROM position */
   -2,  /* (38) attribute ::= TO position */
   -1,  /* (39) attribute ::= THEN */
   -4,  /* (40) attribute ::= THEN optrelexpr HEADING expr */
   -3,  /* (41) attribute ::= THEN optrelexpr EDGEPT */
   -4,  /* (42) attribute ::= GO optrelexpr HEADING expr */
   -3,  /* (43) attribute ::= GO optrelexpr EDGEPT */
   -2,  /* (44) attribute ::= AT position */
   -1,  /* (45) attribute ::= SAME */
   -3,  /* (46) attribute ::= SAME AS object */
   -2,  /* (47) attribute ::= STRING textposition */
   -1,  /* (48) attribute ::= FIT */
   -2,  /* (49) attribute ::= BEHIND object */
   -4,  /* (50) withclause ::= DOT_E edge AT position */
   -3,  /* (51) withclause ::= edge AT position */
   -1,  /* (52) numproperty ::= HEIGHT|WIDTH|RADIUS|DIAMETER|THICKNESS */
   -1,  /* (53) boolproperty ::= CW */
   -1,  /* (54) boolproperty ::= CCW */
   -1,  /* (55) boolproperty ::= LARROW */
   -1,  /* (56) boolproperty ::= RARROW */
   -1,  /* (57) boolproperty ::= LRARROW */
   -1,  /* (58) boolproperty ::= INVIS */
   -1,  /* (59) boolproperty ::= THICK */
   -1,  /* (60) boolproperty ::= THIN */
   -1,  /* (61) boolproperty ::= SOLID */
    0,  /* (62) textposition ::= */
   -2,  /* (63) textposition ::= textposition CENTER|LJUST|RJUST|ABOVE|BELOW|ITALIC|BOLD|MONO|ALIGNED|BIG|SMALL */
   -3,  /* (64) position ::= expr COMMA expr */
   -5,  /* (65) position ::= place PLUS expr COMMA expr */
   -5,  /* (66) position ::= place MINUS expr COMMA expr */
   -7,  /* (67) position ::= place PLUS LP expr COMMA expr RP */
   -7,  /* (68) position ::= place MINUS LP expr COMMA expr RP */
   -5,  /* (69) position ::= LP position COMMA position RP */
   -3,  /* (70) position ::= LP position RP */
   -5,  /* (71) position ::= expr between position AND position */
   -6,  /* (72) position ::= expr LT position COMMA position GT */
   -3,  /* (73) position ::= expr ABOVE position */
   -3,  /* (74) position ::= expr BELOW position */
   -4,  /* (75) position ::= expr LEFT OF position */
   -4,  /* (76) position ::= expr RIGHT OF position */
   -6,  /* (77) position ::= expr ON HEADING EDGEPT OF position */
   -5,  /* (78) position ::= expr HEADING EDGEPT OF position */
   -4,  /* (79) position ::= expr EDGEPT OF position */
   -6,  /* (80) position ::= expr ON HEADING expr FROM position */
   -5,  /* (81) position ::= expr HEADING expr FROM position */
   -3,  /* (82) place ::= edge OF object */
   -1,  /* (83) place2 ::= object */
   -3,  /* (84) place2 ::= object DOT_E edge */
   -4,  /* (85) place2 ::= NTH VERTEX OF object */
   -1,  /* (86) object ::= nth */
   -3,  /* (87) object ::= nth OF|IN object */
   -1,  /* (88) objectname ::= THIS */
   -1,  /* (89) objectname ::= PLACENAME */
   -3,  /* (90) objectname ::= objectname DOT_U PLACENAME */
   -2,  /* (91) nth ::= NTH CLASSNAME */
   -3,  /* (92) nth ::= NTH LAST CLASSNAME */
   -2,  /* (93) nth ::= LAST CLASSNAME */
   -1,  /* (94) nth ::= LAST */
   -3,  /* (95) nth ::= NTH LB RB */
   -4,  /* (96) nth ::= NTH LAST LB RB */
   -3,  /* (97) nth ::= LAST LB RB */
   -3,  /* (98) expr ::= expr PLUS expr */
   -3,  /* (99) expr ::= expr MINUS expr */
   -3,  /* (100) expr ::= expr STAR expr */
   -3,  /* (101) expr ::= expr SLASH expr */
   -2,  /* (102) expr ::= MINUS expr */
   -2,  /* (103) expr ::= PLUS expr */
   -3,  /* (104) expr ::= LP expr RP */
   -3,  /* (105) expr ::= LP FILL|COLOR|THICKNESS RP */
   -1,  /* (106) expr ::= NUMBER */
   -1,  /* (107) expr ::= ID */
   -4,  /* (108) expr ::= FUNC1 LP expr RP */
   -6,  /* (109) expr ::= FUNC2 LP expr COMMA expr RP */
   -6,  /* (110) expr ::= DIST LP position COMMA position RP */
   -3,  /* (111) expr ::= place2 DOT_XY X */
   -3,  /* (112) expr ::= place2 DOT_XY Y */
   -3,  /* (113) expr ::= object DOT_L numproperty */
   -3,  /* (114) expr ::= object DOT_L dashproperty */
   -3,  /* (115) expr ::= object DOT_L colorproperty */
   -1,  /* (116) lvalue ::= ID */
   -1,  /* (117) lvalue ::= FILL */
   -1,  /* (118) lvalue ::= COLOR */
   -1,  /* (119) lvalue ::= THICKNESS */
   -1,  /* (120) rvalue ::= expr */
   -1,  /* (121) print ::= PRINT */
   -1,  /* (122) prlist ::= pritem */
   -3,  /* (123) prlist ::= prlist prsep pritem */
   -1,  /* (124) direction ::= UP */
   -1,  /* (125) direction ::= DOWN */
   -1,  /* (126) direction ::= LEFT */
   -1,  /* (127) direction ::= RIGHT */
   -1,  /* (128) optrelexpr ::= relexpr */
   -1,  /* (129) attribute_list ::= alist */
    0,  /* (130) alist ::= */
   -2,  /* (131) alist ::= alist attribute */
   -1,  /* (132) attribute ::= boolproperty */
   -2,  /* (133) attribute ::= WITH withclause */
   -1,  /* (134) go ::= GO */
    0,  /* (135) go ::= */
   -3,  /* (136) even ::= UNTIL EVEN WITH */
   -2,  /* (137) even ::= EVEN WITH */
   -1,  /* (138) dashproperty ::= DOTTED */
   -1,  /* (139) dashproperty ::= DASHED */
   -1,  /* (140) colorproperty ::= FILL */
   -1,  /* (141) colorproperty ::= COLOR */
   -1,  /* (142) position ::= place */
   -2,  /* (143) between ::= WAY BETWEEN */
   -1,  /* (144) between ::= BETWEEN */
   -4,  /* (145) between ::= OF THE WAY BETWEEN */
   -1,  /* (146) place ::= place2 */
   -1,  /* (147) edge ::= CENTER */
   -1,  /* (148) edge ::= EDGEPT */
   -1,  /* (149) edge ::= TOP */
   -1,  /* (150) edge ::= BOTTOM */
   -1,  /* (151) edge ::= START */
   -1,  /* (152) edge ::= END */
   -1,  /* (153) edge ::= RIGHT */
   -1,  /* (154) edge ::= LEFT */
   -1,  /* (155) object ::= objectname */
};

static void yy_accept(yyParser*);  /* Forward Declaration */

/*
** Perform a reduce action and the shift that must immediately
** follow the reduce.
**
** The yyLookahead and yyLookaheadToken parameters provide reduce actions
** access to the lookahead token (if any).  The yyLookahead will be YYNOCODE
** if the lookahead token has already been consumed.  As this procedure is
** only called from one place, optimizing compilers will in-line it, which
** means that the extra parameters have no performance impact.
*/
static YYACTIONTYPE yy_reduce(
  yyParser *yypParser,         /* The parser */
  unsigned int yyruleno,       /* Number of the rule by which to reduce */
  int yyLookahead,             /* Lookahead token, or YYNOCODE if none */
  pik_parserTOKENTYPE yyLookaheadToken  /* Value of the lookahead token */
  pik_parserCTX_PDECL                   /* %extra_context */
){
  int yygoto;                     /* The next state */
  YYACTIONTYPE yyact;             /* The next action */
  yyStackEntry *yymsp;            /* The top of the parser's stack */
  int yysize;                     /* Amount to pop the stack */
  pik_parserARG_FETCH
  (void)yyLookahead;
  (void)yyLookaheadToken;
  yymsp = yypParser->yytos;

  switch( yyruleno ){
  /* Beginning here are the reduction cases.  A typical example
  ** follows:
  **   case 0:
  **  #line <lineno> <grammarfile>
  **     { ... }           // User supplied code
  **  #line <lineno> <thisfile>
  **     break;
  */
/********** Begin reduce actions **********************************************/
        YYMINORTYPE yylhsminor;
      case 0: /* document ::= statement_list */
#line 549 "pikchr.y"
{pik_render(p,yymsp[0].minor.yy235);}
#line 2451 "pikchr.c"
        break;
      case 1: /* statement_list ::= statement */
#line 552 "pikchr.y"
{ yylhsminor.yy235 = pik_elist_append(p,0,yymsp[0].minor.yy162); }
#line 2456 "pikchr.c"
  yymsp[0].minor.yy235 = yylhsminor.yy235;
        break;
      case 2: /* statement_list ::= statement_list EOL statement */
#line 554 "pikchr.y"
{ yylhsminor.yy235 = pik_elist_append(p,yymsp[-2].minor.yy235,yymsp[0].minor.yy162); }
#line 2462 "pikchr.c"
  yymsp[-2].minor.yy235 = yylhsminor.yy235;
        break;
      case 3: /* statement ::= */
#line 557 "pikchr.y"
{ yymsp[1].minor.yy162 = 0; }
#line 2468 "pikchr.c"
        break;
      case 4: /* statement ::= direction */
#line 558 "pikchr.y"
{ pik_set_direction(p,yymsp[0].minor.yy0.eCode);  yylhsminor.yy162=0; }
#line 2473 "pikchr.c"
  yymsp[0].minor.yy162 = yylhsminor.yy162;
        break;
      case 5: /* statement ::= lvalue ASSIGN rvalue */
#line 559 "pikchr.y"
{pik_set_var(p,&yymsp[-2].minor.yy0,yymsp[0].minor.yy21,&yymsp[-1].minor.yy0); yylhsminor.yy162=0;}
#line 2479 "pikchr.c"
  yymsp[-2].minor.yy162 = yylhsminor.yy162;
        break;
      case 6: /* statement ::= PLACENAME COLON unnamed_statement */
#line 561 "pikchr.y"
{ yylhsminor.yy162 = yymsp[0].minor.yy162;  pik_elem_setname(p,yymsp[0].minor.yy162,&yymsp[-2].minor.yy0); }
#line 2485 "pikchr.c"
  yymsp[-2].minor.yy162 = yylhsminor.yy162;
        break;
      case 7: /* statement ::= PLACENAME COLON position */
#line 563 "pikchr.y"
{ yylhsminor.yy162 = pik_elem_new(p,0,0,0);
                 if(yylhsminor.yy162){ yylhsminor.yy162->ptAt = yymsp[0].minor.yy63; pik_elem_setname(p,yylhsminor.yy162,&yymsp[-2].minor.yy0); }}
#line 2492 "pikchr.c"
  yymsp[-2].minor.yy162 = yylhsminor.yy162;
        break;
      case 8: /* statement ::= unnamed_statement */
#line 565 "pikchr.y"
{yylhsminor.yy162 = yymsp[0].minor.yy162;}
#line 2498 "pikchr.c"
  yymsp[0].minor.yy162 = yylhsminor.yy162;
        break;
      case 9: /* statement ::= print prlist */
#line 566 "pikchr.y"
{pik_append(p,"<br>\n",5); yymsp[-1].minor.yy162=0;}
#line 2504 "pikchr.c"
        break;
      case 10: /* statement ::= ASSERT LP expr EQ expr RP */
#line 571 "pikchr.y"
{yymsp[-5].minor.yy162=pik_assert(p,yymsp[-3].minor.yy21,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy21);}
#line 2509 "pikchr.c"
        break;
      case 11: /* statement ::= ASSERT LP position EQ position RP */
#line 573 "pikchr.y"
{yymsp[-5].minor.yy162=pik_position_assert(p,&yymsp[-3].minor.yy63,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy63);}
#line 2514 "pikchr.c"
        break;
      case 12: /* statement ::= DEFINE ID CODEBLOCK */
#line 574 "pikchr.y"
{yymsp[-2].minor.yy162=0; pik_add_macro(p,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);}
#line 2519 "pikchr.c"
        break;
      case 13: /* rvalue ::= PLACENAME */
#line 585 "pikchr.y"
{yylhsminor.yy21 = pik_lookup_color(p,&yymsp[0].minor.yy0);}
#line 2524 "pikchr.c"
  yymsp[0].minor.yy21 = yylhsminor.yy21;
        break;
      case 14: /* pritem ::= FILL */
      case 15: /* pritem ::= COLOR */ yytestcase(yyruleno==15);
      case 16: /* pritem ::= THICKNESS */ yytestcase(yyruleno==16);
#line 590 "pikchr.y"
{pik_append_num(p,"",pik_value(p,yymsp[0].minor.yy0.z,yymsp[0].minor.yy0.n,0));}
#line 2532 "pikchr.c"
        break;
      case 17: /* pritem ::= rvalue */
#line 593 "pikchr.y"
{pik_append_num(p,"",yymsp[0].minor.yy21);}
#line 2537 "pikchr.c"
        break;
      case 18: /* pritem ::= STRING */
#line 594 "pikchr.y"
{pik_append_text(p,yymsp[0].minor.yy0.z+1,yymsp[0].minor.yy0.n-2,0);}
#line 2542 "pikchr.c"
        break;
      case 19: /* prsep ::= COMMA */
#line 595 "pikchr.y"
{pik_append(p, " ", 1);}
#line 2547 "pikchr.c"
        break;
      case 20: /* unnamed_statement ::= basetype attribute_list */
#line 598 "pikchr.y"
{yylhsminor.yy162 = yymsp[-1].minor.yy162; pik_after_adding_attributes(p,yylhsminor.yy162);}
#line 2552 "pikchr.c"
  yymsp[-1].minor.yy162 = yylhsminor.yy162;
        break;
      case 21: /* basetype ::= CLASSNAME */
#line 600 "pikchr.y"
{yylhsminor.yy162 = pik_elem_new(p,&yymsp[0].minor.yy0,0,0); }
#line 2558 "pikchr.c"
  yymsp[0].minor.yy162 = yylhsminor.yy162;
        break;
      case 22: /* basetype ::= STRING textposition */
#line 602 "pikchr.y"
{yymsp[-1].minor.yy0.eCode = yymsp[0].minor.yy188; yylhsminor.yy162 = pik_elem_new(p,0,&yymsp[-1].minor.yy0,0); }
#line 2564 "pikchr.c"
  yymsp[-1].minor.yy162 = yylhsminor.yy162;
        break;
      case 23: /* basetype ::= LB savelist statement_list RB */
#line 604 "pikchr.y"
{ p->list = yymsp[-2].minor.yy235; yymsp[-3].minor.yy162 = pik_elem_new(p,0,0,yymsp[-1].minor.yy235); if(yymsp[-3].minor.yy162) yymsp[-3].minor.yy162->errTok = yymsp[0].minor.yy0; }
#line 2570 "pikchr.c"
        break;
      case 24: /* savelist ::= */
#line 609 "pikchr.y"
{yymsp[1].minor.yy235 = p->list; p->list = 0;}
#line 2575 "pikchr.c"
        break;
      case 25: /* relexpr ::= expr */
#line 616 "pikchr.y"
{yylhsminor.yy72.rAbs = yymsp[0].minor.yy21; yylhsminor.yy72.rRel = 0;}
#line 2580 "pikchr.c"
  yymsp[0].minor.yy72 = yylhsminor.yy72;
        break;
      case 26: /* relexpr ::= expr PERCENT */
#line 617 "pikchr.y"
{yylhsminor.yy72.rAbs = 0; yylhsminor.yy72.rRel = yymsp[-1].minor.yy21/100;}
#line 2586 "pikchr.c"
  yymsp[-1].minor.yy72 = yylhsminor.yy72;
        break;
      case 27: /* optrelexpr ::= */
#line 619 "pikchr.y"
{yymsp[1].minor.yy72.rAbs = 0; yymsp[1].minor.yy72.rRel = 1.0;}
#line 2592 "pikchr.c"
        break;
      case 28: /* attribute_list ::= relexpr alist */
#line 621 "pikchr.y"
{pik_add_direction(p,0,&yymsp[-1].minor.yy72);}
#line 2597 "pikchr.c"
        break;
      case 29: /* attribute ::= numproperty relexpr */
#line 625 "pikchr.y"
{ pik_set_numprop(p,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy72); }
#line 2602 "pikchr.c"
        break;
      case 30: /* attribute ::= dashproperty expr */
#line 626 "pikchr.y"
{ pik_set_dashed(p,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy21); }
#line 2607 "pikchr.c"
        break;
      case 31: /* attribute ::= dashproperty */
#line 627 "pikchr.y"
{ pik_set_dashed(p,&yymsp[0].minor.yy0,0);  }
#line 2612 "pikchr.c"
        break;
      case 32: /* attribute ::= colorproperty rvalue */
#line 628 "pikchr.y"
{ pik_set_clrprop(p,&yymsp[-1].minor.yy0,yymsp[0].minor.yy21); }
#line 2617 "pikchr.c"
        break;
      case 33: /* attribute ::= go direction optrelexpr */
#line 629 "pikchr.y"
{ pik_add_direction(p,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy72);}
#line 2622 "pikchr.c"
        break;
      case 34: /* attribute ::= go direction even position */
#line 630 "pikchr.y"
{pik_evenwith(p,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy63);}
#line 2627 "pikchr.c"
        break;
      case 35: /* attribute ::= CLOSE */
#line 631 "pikchr.y"
{ pik_close_path(p,&yymsp[0].minor.yy0); }
#line 2632 "pikchr.c"
        break;
      case 36: /* attribute ::= CHOP */
#line 632 "pikchr.y"
{ p->cur->bChop = 1; }
#line 2637 "pikchr.c"
        break;
      case 37: /* attribute ::= FROM position */
#line 633 "pikchr.y"
{ pik_set_from(p,p->cur,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy63); }
#line 2642 "pikchr.c"
        break;
      case 38: /* attribute ::= TO position */
#line 634 "pikchr.y"
{ pik_add_to(p,p->cur,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy63); }
#line 2647 "pikchr.c"
        break;
      case 39: /* attribute ::= THEN */
#line 635 "pikchr.y"
{ pik_then(p, &yymsp[0].minor.yy0, p->cur); }
#line 2652 "pikchr.c"
        break;
      case 40: /* attribute ::= THEN optrelexpr HEADING expr */
      case 42: /* attribute ::= GO optrelexpr HEADING expr */ yytestcase(yyruleno==42);
#line 637 "pikchr.y"
{pik_move_hdg(p,&yymsp[-2].minor.yy72,&yymsp[-1].minor.yy0,yymsp[0].minor.yy21,0,&yymsp[-3].minor.yy0);}
#line 2658 "pikchr.c"
        break;
      case 41: /* attribute ::= THEN optrelexpr EDGEPT */
      case 43: /* attribute ::= GO optrelexpr EDGEPT */ yytestcase(yyruleno==43);
#line 638 "pikchr.y"
{pik_move_hdg(p,&yymsp[-1].minor.yy72,0,0,&yymsp[0].minor.yy0,&yymsp[-2].minor.yy0);}
#line 2664 "pikchr.c"
        break;
      case 44: /* attribute ::= AT position */
#line 643 "pikchr.y"
{ pik_set_at(p,0,&yymsp[0].minor.yy63,&yymsp[-1].minor.yy0); }
#line 2669 "pikchr.c"
        break;
      case 45: /* attribute ::= SAME */
#line 645 "pikchr.y"
{pik_same(p,0,&yymsp[0].minor.yy0);}
#line 2674 "pikchr.c"
        break;
      case 46: /* attribute ::= SAME AS object */
#line 646 "pikchr.y"
{pik_same(p,yymsp[0].minor.yy162,&yymsp[-2].minor.yy0);}
#line 2679 "pikchr.c"
        break;
      case 47: /* attribute ::= STRING textposition */
#line 647 "pikchr.y"
{pik_add_txt(p,&yymsp[-1].minor.yy0,yymsp[0].minor.yy188);}
#line 2684 "pikchr.c"
        break;
      case 48: /* attribute ::= FIT */
#line 648 "pikchr.y"
{pik_size_to_fit(p,&yymsp[0].minor.yy0,3); }
#line 2689 "pikchr.c"
        break;
      case 49: /* attribute ::= BEHIND object */
#line 649 "pikchr.y"
{pik_behind(p,yymsp[0].minor.yy162);}
#line 2694 "pikchr.c"
        break;
      case 50: /* withclause ::= DOT_E edge AT position */
      case 51: /* withclause ::= edge AT position */ yytestcase(yyruleno==51);
#line 657 "pikchr.y"
{ pik_set_at(p,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy63,&yymsp[-1].minor.yy0); }
#line 2700 "pikchr.c"
        break;
      case 52: /* numproperty ::= HEIGHT|WIDTH|RADIUS|DIAMETER|THICKNESS */
#line 661 "pikchr.y"
{yylhsminor.yy0 = yymsp[0].minor.yy0;}
#line 2705 "pikchr.c"
  yymsp[0].minor.yy0 = yylhsminor.yy0;
        break;
      case 53: /* boolproperty ::= CW */
#line 672 "pikchr.y"
{p->cur->cw = 1;}
#line 2711 "pikchr.c"
        break;
      case 54: /* boolproperty ::= CCW */
#line 673 "pikchr.y"
{p->cur->cw = 0;}
#line 2716 "pikchr.c"
        break;
      case 55: /* boolproperty ::= LARROW */
#line 674 "pikchr.y"
{p->cur->larrow=1; p->cur->rarrow=0; }
#line 2721 "pikchr.c"
        break;
      case 56: /* boolproperty ::= RARROW */
#line 675 "pikchr.y"
{p->cur->larrow=0; p->cur->rarrow=1; }
#line 2726 "pikchr.c"
        break;
      case 57: /* boolproperty ::= LRARROW */
#line 676 "pikchr.y"
{p->cur->larrow=1; p->cur->rarrow=1; }
#line 2731 "pikchr.c"
        break;
      case 58: /* boolproperty ::= INVIS */
#line 677 "pikchr.y"
{p->cur->sw = -0.00001;}
#line 2736 "pikchr.c"
        break;
      case 59: /* boolproperty ::= THICK */
#line 678 "pikchr.y"
{p->cur->sw *= 1.5;}
#line 2741 "pikchr.c"
        break;
      case 60: /* boolproperty ::= THIN */
#line 679 "pikchr.y"
{p->cur->sw *= 0.67;}
#line 2746 "pikchr.c"
        break;
      case 61: /* boolproperty ::= SOLID */
#line 680 "pikchr.y"
{p->cur->sw = pik_value(p,"thickness",9,0);
                               p->cur->dotted = p->cur->dashed = 0.0;}
#line 2752 "pikchr.c"
        break;
      case 62: /* textposition ::= */
#line 683 "pikchr.y"
{yymsp[1].minor.yy188 = 0;}
#line 2757 "pikchr.c"
        break;
      case 63: /* textposition ::= textposition CENTER|LJUST|RJUST|ABOVE|BELOW|ITALIC|BOLD|MONO|ALIGNED|BIG|SMALL */
#line 686 "pikchr.y"
{yylhsminor.yy188 = (short int)pik_text_position(yymsp[-1].minor.yy188,&yymsp[0].minor.yy0);}
#line 2762 "pikchr.c"
  yymsp[-1].minor.yy188 = yylhsminor.yy188;
        break;
      case 64: /* position ::= expr COMMA expr */
#line 689 "pikchr.y"
{yylhsminor.yy63.x=yymsp[-2].minor.yy21; yylhsminor.yy63.y=yymsp[0].minor.yy21;}
#line 2768 "pikchr.c"
  yymsp[-2].minor.yy63 = yylhsminor.yy63;
        break;
      case 65: /* position ::= place PLUS expr COMMA expr */
#line 691 "pikchr.y"
{yylhsminor.yy63.x=yymsp[-4].minor.yy63.x+yymsp[-2].minor.yy21; yylhsminor.yy63.y=yymsp[-4].minor.yy63.y+yymsp[0].minor.yy21;}
#line 2774 "pikchr.c"
  yymsp[-4].minor.yy63 = yylhsminor.yy63;
        break;
      case 66: /* position ::= place MINUS expr COMMA expr */
#line 692 "pikchr.y"
{yylhsminor.yy63.x=yymsp[-4].minor.yy63.x-yymsp[-2].minor.yy21; yylhsminor.yy63.y=yymsp[-4].minor.yy63.y-yymsp[0].minor.yy21;}
#line 2780 "pikchr.c"
  yymsp[-4].minor.yy63 = yylhsminor.yy63;
        break;
      case 67: /* position ::= place PLUS LP expr COMMA expr RP */
#line 694 "pikchr.y"
{yylhsminor.yy63.x=yymsp[-6].minor.yy63.x+yymsp[-3].minor.yy21; yylhsminor.yy63.y=yymsp[-6].minor.yy63.y+yymsp[-1].minor.yy21;}
#line 2786 "pikchr.c"
  yymsp[-6].minor.yy63 = yylhsminor.yy63;
        break;
      case 68: /* position ::= place MINUS LP expr COMMA expr RP */
#line 696 "pikchr.y"
{yylhsminor.yy63.x=yymsp[-6].minor.yy63.x-yymsp[-3].minor.yy21; yylhsminor.yy63.y=yymsp[-6].minor.yy63.y-yymsp[-1].minor.yy21;}
#line 2792 "pikchr.c"
  yymsp[-6].minor.yy63 = yylhsminor.yy63;
        break;
      case 69: /* position ::= LP position COMMA position RP */
#line 697 "pikchr.y"
{yymsp[-4].minor.yy63.x=yymsp[-3].minor.yy63.x; yymsp[-4].minor.yy63.y=yymsp[-1].minor.yy63.y;}
#line 2798 "pikchr.c"
        break;
      case 70: /* position ::= LP position RP */
#line 698 "pikchr.y"
{yymsp[-2].minor.yy63=yymsp[-1].minor.yy63;}
#line 2803 "pikchr.c"
        break;
      case 71: /* position ::= expr between position AND position */
#line 700 "pikchr.y"
{yylhsminor.yy63 = pik_position_between(yymsp[-4].minor.yy21,yymsp[-2].minor.yy63,yymsp[0].minor.yy63);}
#line 2808 "pikchr.c"
  yymsp[-4].minor.yy63 = yylhsminor.yy63;
        break;
      case 72: /* position ::= expr LT position COMMA position GT */
#line 702 "pikchr.y"
{yylhsminor.yy63 = pik_position_between(yymsp[-5].minor.yy21,yymsp[-3].minor.yy63,yymsp[-1].minor.yy63);}
#line 2814 "pikchr.c"
  yymsp[-5].minor.yy63 = yylhsminor.yy63;
        break;
      case 73: /* position ::= expr ABOVE position */
#line 703 "pikchr.y"
{yylhsminor.yy63=yymsp[0].minor.yy63; yylhsminor.yy63.y += yymsp[-2].minor.yy21;}
#line 2820 "pikchr.c"
  yymsp[-2].minor.yy63 = yylhsminor.yy63;
        break;
      case 74: /* position ::= expr BELOW position */
#line 704 "pikchr.y"
{yylhsminor.yy63=yymsp[0].minor.yy63; yylhsminor.yy63.y -= yymsp[-2].minor.yy21;}
#line 2826 "pikchr.c"
  yymsp[-2].minor.yy63 = yylhsminor.yy63;
        break;
      case 75: /* position ::= expr LEFT OF position */
#line 705 "pikchr.y"
{yylhsminor.yy63=yymsp[0].minor.yy63; yylhsminor.yy63.x -= yymsp[-3].minor.yy21;}
#line 2832 "pikchr.c"
  yymsp[-3].minor.yy63 = yylhsminor.yy63;
        break;
      case 76: /* position ::= expr RIGHT OF position */
#line 706 "pikchr.y"
{yylhsminor.yy63=yymsp[0].minor.yy63; yylhsminor.yy63.x += yymsp[-3].minor.yy21;}
#line 2838 "pikchr.c"
  yymsp[-3].minor.yy63 = yylhsminor.yy63;
        break;
      case 77: /* position ::= expr ON HEADING EDGEPT OF position */
#line 708 "pikchr.y"
{yylhsminor.yy63 = pik_position_at_hdg(yymsp[-5].minor.yy21,&yymsp[-2].minor.yy0,yymsp[0].minor.yy63);}
#line 2844 "pikchr.c"
  yymsp[-5].minor.yy63 = yylhsminor.yy63;
        break;
      case 78: /* position ::= expr HEADING EDGEPT OF position */
#line 710 "pikchr.y"
{yylhsminor.yy63 = pik_position_at_hdg(yymsp[-4].minor.yy21,&yymsp[-2].minor.yy0,yymsp[0].minor.yy63);}
#line 2850 "pikchr.c"
  yymsp[-4].minor.yy63 = yylhsminor.yy63;
        break;
      case 79: /* position ::= expr EDGEPT OF position */
#line 712 "pikchr.y"
{yylhsminor.yy63 = pik_position_at_hdg(yymsp[-3].minor.yy21,&yymsp[-2].minor.yy0,yymsp[0].minor.yy63);}
#line 2856 "pikchr.c"
  yymsp[-3].minor.yy63 = yylhsminor.yy63;
        break;
      case 80: /* position ::= expr ON HEADING expr FROM position */
#line 714 "pikchr.y"
{yylhsminor.yy63 = pik_position_at_angle(yymsp[-5].minor.yy21,yymsp[-2].minor.yy21,yymsp[0].minor.yy63);}
#line 2862 "pikchr.c"
  yymsp[-5].minor.yy63 = yylhsminor.yy63;
        break;
      case 81: /* position ::= expr HEADING expr FROM position */
#line 716 "pikchr.y"
{yylhsminor.yy63 = pik_position_at_angle(yymsp[-4].minor.yy21,yymsp[-2].minor.yy21,yymsp[0].minor.yy63);}
#line 2868 "pikchr.c"
  yymsp[-4].minor.yy63 = yylhsminor.yy63;
        break;
      case 82: /* place ::= edge OF object */
#line 728 "pikchr.y"
{yylhsminor.yy63 = pik_place_of_elem(p,yymsp[0].minor.yy162,&yymsp[-2].minor.yy0);}
#line 2874 "pikchr.c"
  yymsp[-2].minor.yy63 = yylhsminor.yy63;
        break;
      case 83: /* place2 ::= object */
#line 729 "pikchr.y"
{yylhsminor.yy63 = pik_place_of_elem(p,yymsp[0].minor.yy162,0);}
#line 2880 "pikchr.c"
  yymsp[0].minor.yy63 = yylhsminor.yy63;
        break;
      case 84: /* place2 ::= object DOT_E edge */
#line 730 "pikchr.y"
{yylhsminor.yy63 = pik_place_of_elem(p,yymsp[-2].minor.yy162,&yymsp[0].minor.yy0);}
#line 2886 "pikchr.c"
  yymsp[-2].minor.yy63 = yylhsminor.yy63;
        break;
      case 85: /* place2 ::= NTH VERTEX OF object */
#line 731 "pikchr.y"
{yylhsminor.yy63 = pik_nth_vertex(p,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,yymsp[0].minor.yy162);}
#line 2892 "pikchr.c"
  yymsp[-3].minor.yy63 = yylhsminor.yy63;
        break;
      case 86: /* object ::= nth */
#line 743 "pikchr.y"
{yylhsminor.yy162 = pik_find_nth(p,0,&yymsp[0].minor.yy0);}
#line 2898 "pikchr.c"
  yymsp[0].minor.yy162 = yylhsminor.yy162;
        break;
      case 87: /* object ::= nth OF|IN object */
#line 744 "pikchr.y"
{yylhsminor.yy162 = pik_find_nth(p,yymsp[0].minor.yy162,&yymsp[-2].minor.yy0);}
#line 2904 "pikchr.c"
  yymsp[-2].minor.yy162 = yylhsminor.yy162;
        break;
      case 88: /* objectname ::= THIS */
#line 746 "pikchr.y"
{yymsp[0].minor.yy162 = p->cur;}
#line 2910 "pikchr.c"
        break;
      case 89: /* objectname ::= PLACENAME */
#line 747 "pikchr.y"
{yylhsminor.yy162 = pik_find_byname(p,0,&yymsp[0].minor.yy0);}
#line 2915 "pikchr.c"
  yymsp[0].minor.yy162 = yylhsminor.yy162;
        break;
      case 90: /* objectname ::= objectname DOT_U PLACENAME */
#line 749 "pikchr.y"
{yylhsminor.yy162 = pik_find_byname(p,yymsp[-2].minor.yy162,&yymsp[0].minor.yy0);}
#line 2921 "pikchr.c"
  yymsp[-2].minor.yy162 = yylhsminor.yy162;
        break;
      case 91: /* nth ::= NTH CLASSNAME */
#line 751 "pikchr.y"
{yylhsminor.yy0=yymsp[0].minor.yy0; yylhsminor.yy0.eCode = pik_nth_value(p,&yymsp[-1].minor.yy0); }
#line 2927 "pikchr.c"
  yymsp[-1].minor.yy0 = yylhsminor.yy0;
        break;
      case 92: /* nth ::= NTH LAST CLASSNAME */
#line 752 "pikchr.y"
{yylhsminor.yy0=yymsp[0].minor.yy0; yylhsminor.yy0.eCode = -pik_nth_value(p,&yymsp[-2].minor.yy0); }
#line 2933 "pikchr.c"
  yymsp[-2].minor.yy0 = yylhsminor.yy0;
        break;
      case 93: /* nth ::= LAST CLASSNAME */
#line 753 "pikchr.y"
{yymsp[-1].minor.yy0=yymsp[0].minor.yy0; yymsp[-1].minor.yy0.eCode = -1;}
#line 2939 "pikchr.c"
        break;
      case 94: /* nth ::= LAST */
#line 754 "pikchr.y"
{yylhsminor.yy0=yymsp[0].minor.yy0; yylhsminor.yy0.eCode = -1;}
#line 2944 "pikchr.c"
  yymsp[0].minor.yy0 = yylhsminor.yy0;
        break;
      case 95: /* nth ::= NTH LB RB */
#line 755 "pikchr.y"
{yylhsminor.yy0=yymsp[-1].minor.yy0; yylhsminor.yy0.eCode = pik_nth_value(p,&yymsp[-2].minor.yy0);}
#line 2950 "pikchr.c"
  yymsp[-2].minor.yy0 = yylhsminor.yy0;
        break;
      case 96: /* nth ::= NTH LAST LB RB */
#line 756 "pikchr.y"
{yylhsminor.yy0=yymsp[-1].minor.yy0; yylhsminor.yy0.eCode = -pik_nth_value(p,&yymsp[-3].minor.yy0);}
#line 2956 "pikchr.c"
  yymsp[-3].minor.yy0 = yylhsminor.yy0;
        break;
      case 97: /* nth ::= LAST LB RB */
#line 757 "pikchr.y"
{yymsp[-2].minor.yy0=yymsp[-1].minor.yy0; yymsp[-2].minor.yy0.eCode = -1; }
#line 2962 "pikchr.c"
        break;
      case 98: /* expr ::= expr PLUS expr */
#line 759 "pikchr.y"
{yylhsminor.yy21=yymsp[-2].minor.yy21+yymsp[0].minor.yy21;}
#line 2967 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      case 99: /* expr ::= expr MINUS expr */
#line 760 "pikchr.y"
{yylhsminor.yy21=yymsp[-2].minor.yy21-yymsp[0].minor.yy21;}
#line 2973 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      case 100: /* expr ::= expr STAR expr */
#line 761 "pikchr.y"
{yylhsminor.yy21=yymsp[-2].minor.yy21*yymsp[0].minor.yy21;}
#line 2979 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      case 101: /* expr ::= expr SLASH expr */
#line 762 "pikchr.y"
{
  if( yymsp[0].minor.yy21==0.0 ){ pik_error(p, &yymsp[-1].minor.yy0, "division by zero"); yylhsminor.yy21 = 0.0; }
  else{ yylhsminor.yy21 = yymsp[-2].minor.yy21/yymsp[0].minor.yy21; }
}
#line 2988 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      case 102: /* expr ::= MINUS expr */
#line 766 "pikchr.y"
{yymsp[-1].minor.yy21=-yymsp[0].minor.yy21;}
#line 2994 "pikchr.c"
        break;
      case 103: /* expr ::= PLUS expr */
#line 767 "pikchr.y"
{yymsp[-1].minor.yy21=yymsp[0].minor.yy21;}
#line 2999 "pikchr.c"
        break;
      case 104: /* expr ::= LP expr RP */
#line 768 "pikchr.y"
{yymsp[-2].minor.yy21=yymsp[-1].minor.yy21;}
#line 3004 "pikchr.c"
        break;
      case 105: /* expr ::= LP FILL|COLOR|THICKNESS RP */
#line 769 "pikchr.y"
{yymsp[-2].minor.yy21=pik_get_var(p,&yymsp[-1].minor.yy0);}
#line 3009 "pikchr.c"
        break;
      case 106: /* expr ::= NUMBER */
#line 770 "pikchr.y"
{yylhsminor.yy21=pik_atof(&yymsp[0].minor.yy0);}
#line 3014 "pikchr.c"
  yymsp[0].minor.yy21 = yylhsminor.yy21;
        break;
      case 107: /* expr ::= ID */
#line 771 "pikchr.y"
{yylhsminor.yy21=pik_get_var(p,&yymsp[0].minor.yy0);}
#line 3020 "pikchr.c"
  yymsp[0].minor.yy21 = yylhsminor.yy21;
        break;
      case 108: /* expr ::= FUNC1 LP expr RP */
#line 772 "pikchr.y"
{yylhsminor.yy21 = pik_func(p,&yymsp[-3].minor.yy0,yymsp[-1].minor.yy21,0.0);}
#line 3026 "pikchr.c"
  yymsp[-3].minor.yy21 = yylhsminor.yy21;
        break;
      case 109: /* expr ::= FUNC2 LP expr COMMA expr RP */
#line 773 "pikchr.y"
{yylhsminor.yy21 = pik_func(p,&yymsp[-5].minor.yy0,yymsp[-3].minor.yy21,yymsp[-1].minor.yy21);}
#line 3032 "pikchr.c"
  yymsp[-5].minor.yy21 = yylhsminor.yy21;
        break;
      case 110: /* expr ::= DIST LP position COMMA position RP */
#line 774 "pikchr.y"
{yymsp[-5].minor.yy21 = pik_dist(&yymsp[-3].minor.yy63,&yymsp[-1].minor.yy63);}
#line 3038 "pikchr.c"
        break;
      case 111: /* expr ::= place2 DOT_XY X */
#line 775 "pikchr.y"
{yylhsminor.yy21 = yymsp[-2].minor.yy63.x;}
#line 3043 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      case 112: /* expr ::= place2 DOT_XY Y */
#line 776 "pikchr.y"
{yylhsminor.yy21 = yymsp[-2].minor.yy63.y;}
#line 3049 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      case 113: /* expr ::= object DOT_L numproperty */
      case 114: /* expr ::= object DOT_L dashproperty */ yytestcase(yyruleno==114);
      case 115: /* expr ::= object DOT_L colorproperty */ yytestcase(yyruleno==115);
#line 777 "pikchr.y"
{yylhsminor.yy21=pik_property_of(yymsp[-2].minor.yy162,&yymsp[0].minor.yy0);}
#line 3057 "pikchr.c"
  yymsp[-2].minor.yy21 = yylhsminor.yy21;
        break;
      default:
      /* (116) lvalue ::= ID */ yytestcase(yyruleno==116);
      /* (117) lvalue ::= FILL */ yytestcase(yyruleno==117);
      /* (118) lvalue ::= COLOR */ yytestcase(yyruleno==118);
      /* (119) lvalue ::= THICKNESS */ yytestcase(yyruleno==119);
      /* (120) rvalue ::= expr */ yytestcase(yyruleno==120);
      /* (121) print ::= PRINT */ yytestcase(yyruleno==121);
      /* (122) prlist ::= pritem (OPTIMIZED OUT) */ assert(yyruleno!=122);
      /* (123) prlist ::= prlist prsep pritem */ yytestcase(yyruleno==123);
      /* (124) direction ::= UP */ yytestcase(yyruleno==124);
      /* (125) direction ::= DOWN */ yytestcase(yyruleno==125);
      /* (126) direction ::= LEFT */ yytestcase(yyruleno==126);
      /* (127) direction ::= RIGHT */ yytestcase(yyruleno==127);
      /* (128) optrelexpr ::= relexpr (OPTIMIZED OUT) */ assert(yyruleno!=128);
      /* (129) attribute_list ::= alist */ yytestcase(yyruleno==129);
      /* (130) alist ::= */ yytestcase(yyruleno==130);
      /* (131) alist ::= alist attribute */ yytestcase(yyruleno==131);
      /* (132) attribute ::= boolproperty (OPTIMIZED OUT) */ assert(yyruleno!=132);
      /* (133) attribute ::= WITH withclause */ yytestcase(yyruleno==133);
      /* (134) go ::= GO */ yytestcase(yyruleno==134);
      /* (135) go ::= */ yytestcase(yyruleno==135);
      /* (136) even ::= UNTIL EVEN WITH */ yytestcase(yyruleno==136);
      /* (137) even ::= EVEN WITH */ yytestcase(yyruleno==137);
      /* (138) dashproperty ::= DOTTED */ yytestcase(yyruleno==138);
      /* (139) dashproperty ::= DASHED */ yytestcase(yyruleno==139);
      /* (140) colorproperty ::= FILL */ yytestcase(yyruleno==140);
      /* (141) colorproperty ::= COLOR */ yytestcase(yyruleno==141);
      /* (142) position ::= place */ yytestcase(yyruleno==142);
      /* (143) between ::= WAY BETWEEN */ yytestcase(yyruleno==143);
      /* (144) between ::= BETWEEN */ yytestcase(yyruleno==144);
      /* (145) between ::= OF THE WAY BETWEEN */ yytestcase(yyruleno==145);
      /* (146) place ::= place2 */ yytestcase(yyruleno==146);
      /* (147) edge ::= CENTER */ yytestcase(yyruleno==147);
      /* (148) edge ::= EDGEPT */ yytestcase(yyruleno==148);
      /* (149) edge ::= TOP */ yytestcase(yyruleno==149);
      /* (150) edge ::= BOTTOM */ yytestcase(yyruleno==150);
      /* (151) edge ::= START */ yytestcase(yyruleno==151);
      /* (152) edge ::= END */ yytestcase(yyruleno==152);
      /* (153) edge ::= RIGHT */ yytestcase(yyruleno==153);
      /* (154) edge ::= LEFT */ yytestcase(yyruleno==154);
      /* (155) object ::= objectname */ yytestcase(yyruleno==155);
        break;
/********** End reduce actions ************************************************/
  };
  assert( yyruleno<sizeof(yyRuleInfoLhs)/sizeof(yyRuleInfoLhs[0]) );
  yygoto = yyRuleInfoLhs[yyruleno];
  yysize = yyRuleInfoNRhs[yyruleno];
  yyact = yy_find_reduce_action(yymsp[yysize].stateno,(YYCODETYPE)yygoto);

  /* There are no SHIFTREDUCE actions on nonterminals because the table
  ** generator has simplified them to pure REDUCE actions. */
  assert( !(yyact>YY_MAX_SHIFT && yyact<=YY_MAX_SHIFTREDUCE) );

  /* It is not possible for a REDUCE to be followed by an error */
  assert( yyact!=YY_ERROR_ACTION );

  yymsp += yysize+1;
  yypParser->yytos = yymsp;
  yymsp->stateno = (YYACTIONTYPE)yyact;
  yymsp->major = (YYCODETYPE)yygoto;
  yyTraceShift(yypParser, yyact, "... then shift");
  return yyact;
}

/*
** The following code executes when the parse fails
*/
#ifndef YYNOERRORRECOVERY
static void yy_parse_failed(
  yyParser *yypParser           /* The parser */
){
  pik_parserARG_FETCH
  pik_parserCTX_FETCH
#ifndef NDEBUG
  if( yyTraceFILE ){
    fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt);
  }
#endif
  while( yypParser->yytos>yypParser->yystack ) yy_pop_parser_stack(yypParser);
  /* Here code is inserted which will be executed whenever the
  ** parser fails */
/************ Begin %parse_failure code ***************************************/
/************ End %parse_failure code *****************************************/
  pik_parserARG_STORE /* Suppress warning about unused %extra_argument variable */
  pik_parserCTX_STORE
}
#endif /* YYNOERRORRECOVERY */

/*
** The following code executes when a syntax error first occurs.
*/
static void yy_syntax_error(
  yyParser *yypParser,           /* The parser */
  int yymajor,                   /* The major type of the error token */
  pik_parserTOKENTYPE yyminor         /* The minor type of the error token */
){
  pik_parserARG_FETCH
  pik_parserCTX_FETCH
#define TOKEN yyminor
/************ Begin %syntax_error code ****************************************/
#line 537 "pikchr.y"

  if( TOKEN.z && TOKEN.z[0] ){
    pik_error(p, &TOKEN, "syntax error");
  }else{
    pik_error(p, 0, "syntax error");
  }
  UNUSED_PARAMETER(yymajor);
#line 3168 "pikchr.c"
/************ End %syntax_error code ******************************************/
  pik_parserARG_STORE /* Suppress warning about unused %extra_argument variable */
  pik_parserCTX_STORE
}

/*
** The following is executed when the parser accepts
*/
static void yy_accept(
  yyParser *yypParser           /* The parser */
){
  pik_parserARG_FETCH
  pik_parserCTX_FETCH
#ifndef NDEBUG
  if( yyTraceFILE ){
    fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt);
  }
#endif
#ifndef YYNOERRORRECOVERY
  yypParser->yyerrcnt = -1;
#endif
  assert( yypParser->yytos==yypParser->yystack );
  /* Here code is inserted which will be executed whenever the
  ** parser accepts */
/*********** Begin %parse_accept code *****************************************/
/*********** End %parse_accept code *******************************************/
  pik_parserARG_STORE /* Suppress warning about unused %extra_argument variable */
  pik_parserCTX_STORE
}

/* The main parser program.
** The first argument is a pointer to a structure obtained from
** "pik_parserAlloc" which describes the current state of the parser.
** The second argument is the major token number.  The third is
** the minor token.  The fourth optional argument is whatever the
** user wants (and specified in the grammar) and is available for
** use by the action routines.
**
** Inputs:
** <ul>
** <li> A pointer to the parser (an opaque structure.)
** <li> The major token number.
** <li> The minor token number.
** <li> An option argument of a grammar-specified type.
** </ul>
**
** Outputs:
** None.
*/
void pik_parser(
  void *yyp,                   /* The parser */
  int yymajor,                 /* The major token code number */
  pik_parserTOKENTYPE yyminor       /* The value for the token */
  pik_parserARG_PDECL               /* Optional %extra_argument parameter */
){
  YYMINORTYPE yyminorunion;
  YYACTIONTYPE yyact;   /* The parser action. */
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
  int yyendofinput;     /* True if we are at the end of input */
#endif
#ifdef YYERRORSYMBOL
  int yyerrorhit = 0;   /* True if yymajor has invoked an error */
#endif
  yyParser *yypParser = (yyParser*)yyp;  /* The parser */
  pik_parserCTX_FETCH
  pik_parserARG_STORE

  assert( yypParser->yytos!=0 );
#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY)
  yyendofinput = (yymajor==0);
#endif

  yyact = yypParser->yytos->stateno;
#ifndef NDEBUG
  if( yyTraceFILE ){
    if( yyact < YY_MIN_REDUCE ){
      fprintf(yyTraceFILE,"%sInput '%s' in state %d\n",
              yyTracePrompt,yyTokenName[yymajor],yyact);
    }else{
      fprintf(yyTraceFILE,"%sInput '%s' with pending reduce %d\n",
              yyTracePrompt,yyTokenName[yymajor],yyact-YY_MIN_REDUCE);
    }
  }
#endif

  while(1){ /* Exit by "break" */
    assert( yypParser->yytos>=yypParser->yystack );
    assert( yyact==yypParser->yytos->stateno );
    yyact = yy_find_shift_action((YYCODETYPE)yymajor,yyact);
    if( yyact >= YY_MIN_REDUCE ){
      unsigned int yyruleno = yyact - YY_MIN_REDUCE; /* Reduce by this rule */
#ifndef NDEBUG
      assert( yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) );
      if( yyTraceFILE ){
        int yysize = yyRuleInfoNRhs[yyruleno];
        if( yysize ){
          fprintf(yyTraceFILE, "%sReduce %d [%s]%s, pop back to state %d.\n",
            yyTracePrompt,
            yyruleno, yyRuleName[yyruleno],
            yyruleno<YYNRULE_WITH_ACTION ? "" : " without external action",
            yypParser->yytos[yysize].stateno);
        }else{
          fprintf(yyTraceFILE, "%sReduce %d [%s]%s.\n",
            yyTracePrompt, yyruleno, yyRuleName[yyruleno],
            yyruleno<YYNRULE_WITH_ACTION ? "" : " without external action");
        }
      }
#endif /* NDEBUG */

      /* Check that the stack is large enough to grow by a single entry
      ** if the RHS of the rule is empty.  This ensures that there is room
      ** enough on the stack to push the LHS value */
      if( yyRuleInfoNRhs[yyruleno]==0 ){
#ifdef YYTRACKMAXSTACKDEPTH
        if( (int)(yypParser->yytos - yypParser->yystack)>yypParser->yyhwm ){
          yypParser->yyhwm++;
          assert( yypParser->yyhwm ==
                  (int)(yypParser->yytos - yypParser->yystack));
        }
#endif
        if( yypParser->yytos>=yypParser->yystackEnd ){
          if( yyGrowStack(yypParser) ){
            yyStackOverflow(yypParser);
            break;
          }
        }
      }
      yyact = yy_reduce(yypParser,yyruleno,yymajor,yyminor pik_parserCTX_PARAM);
    }else if( yyact <= YY_MAX_SHIFTREDUCE ){
      yy_shift(yypParser,yyact,(YYCODETYPE)yymajor,yyminor);
#ifndef YYNOERRORRECOVERY
      yypParser->yyerrcnt--;
#endif
      break;
    }else if( yyact==YY_ACCEPT_ACTION ){
      yypParser->yytos--;
      yy_accept(yypParser);
      return;
    }else{
      assert( yyact == YY_ERROR_ACTION );
      yyminorunion.yy0 = yyminor;
#ifdef YYERRORSYMBOL
      int yymx;
#endif
#ifndef NDEBUG
      if( yyTraceFILE ){
        fprintf(yyTraceFILE,"%sSyntax Error!\n",yyTracePrompt);
      }
#endif
#ifdef YYERRORSYMBOL
      /* A syntax error has occurred.
      ** The response to an error depends upon whether or not the
      ** grammar defines an error token "ERROR".  
      **
      ** This is what we do if the grammar does define ERROR:
      **
      **  * Call the %syntax_error function.
      **
      **  * Begin popping the stack until we enter a state where
      **    it is legal to shift the error symbol, then shift
      **    the error symbol.
      **
      **  * Set the error count to three.
      **
      **  * Begin accepting and shifting new tokens.  No new error
      **    processing will occur until three tokens have been
      **    shifted successfully.
      **
      */
      if( yypParser->yyerrcnt<0 ){
        yy_syntax_error(yypParser,yymajor,yyminor);
      }
      yymx = yypParser->yytos->major;
      if( yymx==YYERRORSYMBOL || yyerrorhit ){
#ifndef NDEBUG
        if( yyTraceFILE ){
          fprintf(yyTraceFILE,"%sDiscard input token %s\n",
             yyTracePrompt,yyTokenName[yymajor]);
        }
#endif
        yy_destructor(yypParser, (YYCODETYPE)yymajor, &yyminorunion);
        yymajor = YYNOCODE;
      }else{
        while( yypParser->yytos > yypParser->yystack ){
          yyact = yy_find_reduce_action(yypParser->yytos->stateno,
                                        YYERRORSYMBOL);
          if( yyact<=YY_MAX_SHIFTREDUCE ) break;
          yy_pop_parser_stack(yypParser);
        }
        if( yypParser->yytos <= yypParser->yystack || yymajor==0 ){
          yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
          yy_parse_failed(yypParser);
#ifndef YYNOERRORRECOVERY
          yypParser->yyerrcnt = -1;
#endif
          yymajor = YYNOCODE;
        }else if( yymx!=YYERRORSYMBOL ){
          yy_shift(yypParser,yyact,YYERRORSYMBOL,yyminor);
        }
      }
      yypParser->yyerrcnt = 3;
      yyerrorhit = 1;
      if( yymajor==YYNOCODE ) break;
      yyact = yypParser->yytos->stateno;
#elif defined(YYNOERRORRECOVERY)
      /* If the YYNOERRORRECOVERY macro is defined, then do not attempt to
      ** do any kind of error recovery.  Instead, simply invoke the syntax
      ** error routine and continue going as if nothing had happened.
      **
      ** Applications can set this macro (for example inside %include) if
      ** they intend to abandon the parse upon the first syntax error seen.
      */
      yy_syntax_error(yypParser,yymajor, yyminor);
      yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
      break;
#else  /* YYERRORSYMBOL is not defined */
      /* This is what we do if the grammar does not define ERROR:
      **
      **  * Report an error message, and throw away the input token.
      **
      **  * If the input token is $, then fail the parse.
      **
      ** As before, subsequent error messages are suppressed until
      ** three input tokens have been successfully shifted.
      */
      if( yypParser->yyerrcnt<=0 ){
        yy_syntax_error(yypParser,yymajor, yyminor);
      }
      yypParser->yyerrcnt = 3;
      yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion);
      if( yyendofinput ){
        yy_parse_failed(yypParser);
#ifndef YYNOERRORRECOVERY
        yypParser->yyerrcnt = -1;
#endif
      }
      break;
#endif
    }
  }
#ifndef NDEBUG
  if( yyTraceFILE ){
    yyStackEntry *i;
    char cDiv = '[';
    fprintf(yyTraceFILE,"%sReturn. Stack=",yyTracePrompt);
    for(i=&yypParser->yystack[1]; i<=yypParser->yytos; i++){
      fprintf(yyTraceFILE,"%c%s", cDiv, yyTokenName[i->major]);
      cDiv = ' ';
    }
    fprintf(yyTraceFILE,"]\n");
  }
#endif
  return;
}

/*
** Return the fallback token corresponding to canonical token iToken, or
** 0 if iToken has no fallback.
*/
int pik_parserFallback(int iToken){
#ifdef YYFALLBACK
  assert( iToken<(int)(sizeof(yyFallback)/sizeof(yyFallback[0])) );
  return yyFallback[iToken];
#else
  (void)iToken;
  return 0;
#endif
}
#line 782 "pikchr.y"



/* Chart of the 148 official CSS color names with their
** corresponding RGB values thru Color Module Level 4:
** https://developer.mozilla.org/en-US/docs/Web/CSS/color_value
**
** Two new names "None" and "Off" are added with a value
** of -1.
*/
static const struct {
  const char *zName;  /* Name of the color */
  int val;            /* RGB value */
} aColor[] = {
  { "AliceBlue",                   0xf0f8ff },
  { "AntiqueWhite",                0xfaebd7 },
  { "Aqua",                        0x00ffff },
  { "Aquamarine",                  0x7fffd4 },
  { "Azure",                       0xf0ffff },
  { "Beige",                       0xf5f5dc },
  { "Bisque",                      0xffe4c4 },
  { "Black",                       0x000000 },
  { "BlanchedAlmond",              0xffebcd },
  { "Blue",                        0x0000ff },
  { "BlueViolet",                  0x8a2be2 },
  { "Brown",                       0xa52a2a },
  { "BurlyWood",                   0xdeb887 },
  { "CadetBlue",                   0x5f9ea0 },
  { "Chartreuse",                  0x7fff00 },
  { "Chocolate",                   0xd2691e },
  { "Coral",                       0xff7f50 },
  { "CornflowerBlue",              0x6495ed },
  { "Cornsilk",                    0xfff8dc },
  { "Crimson",                     0xdc143c },
  { "Cyan",                        0x00ffff },
  { "DarkBlue",                    0x00008b },
  { "DarkCyan",                    0x008b8b },
  { "DarkGoldenrod",               0xb8860b },
  { "DarkGray",                    0xa9a9a9 },
  { "DarkGreen",                   0x006400 },
  { "DarkGrey",                    0xa9a9a9 },
  { "DarkKhaki",                   0xbdb76b },
  { "DarkMagenta",                 0x8b008b },
  { "DarkOliveGreen",              0x556b2f },
  { "DarkOrange",                  0xff8c00 },
  { "DarkOrchid",                  0x9932cc },
  { "DarkRed",                     0x8b0000 },
  { "DarkSalmon",                  0xe9967a },
  { "DarkSeaGreen",                0x8fbc8f },
  { "DarkSlateBlue",               0x483d8b },
  { "DarkSlateGray",               0x2f4f4f },
  { "DarkSlateGrey",               0x2f4f4f },
  { "DarkTurquoise",               0x00ced1 },
  { "DarkViolet",                  0x9400d3 },
  { "DeepPink",                    0xff1493 },
  { "DeepSkyBlue",                 0x00bfff },
  { "DimGray",                     0x696969 },
  { "DimGrey",                     0x696969 },
  { "DodgerBlue",                  0x1e90ff },
  { "Firebrick",                   0xb22222 },
  { "FloralWhite",                 0xfffaf0 },
  { "ForestGreen",                 0x228b22 },
  { "Fuchsia",                     0xff00ff },
  { "Gainsboro",                   0xdcdcdc },
  { "GhostWhite",                  0xf8f8ff },
  { "Gold",                        0xffd700 },
  { "Goldenrod",                   0xdaa520 },
  { "Gray",                        0x808080 },
  { "Green",                       0x008000 },
  { "GreenYellow",                 0xadff2f },
  { "Grey",                        0x808080 },
  { "Honeydew",                    0xf0fff0 },
  { "HotPink",                     0xff69b4 },
  { "IndianRed",                   0xcd5c5c },
  { "Indigo",                      0x4b0082 },
  { "Ivory",                       0xfffff0 },
  { "Khaki",                       0xf0e68c },
  { "Lavender",                    0xe6e6fa },
  { "LavenderBlush",               0xfff0f5 },
  { "LawnGreen",                   0x7cfc00 },
  { "LemonChiffon",                0xfffacd },
  { "LightBlue",                   0xadd8e6 },
  { "LightCoral",                  0xf08080 },
  { "LightCyan",                   0xe0ffff },
  { "LightGoldenrodYellow",        0xfafad2 },
  { "LightGray",                   0xd3d3d3 },
  { "LightGreen",                  0x90ee90 },
  { "LightGrey",                   0xd3d3d3 },
  { "LightPink",                   0xffb6c1 },
  { "LightSalmon",                 0xffa07a },
  { "LightSeaGreen",               0x20b2aa },
  { "LightSkyBlue",                0x87cefa },
  { "LightSlateGray",              0x778899 },
  { "LightSlateGrey",              0x778899 },
  { "LightSteelBlue",              0xb0c4de },
  { "LightYellow",                 0xffffe0 },
  { "Lime",                        0x00ff00 },
  { "LimeGreen",                   0x32cd32 },
  { "Linen",                       0xfaf0e6 },
  { "Magenta",                     0xff00ff },
  { "Maroon",                      0x800000 },
  { "MediumAquamarine",            0x66cdaa },
  { "MediumBlue",                  0x0000cd },
  { "MediumOrchid",                0xba55d3 },
  { "MediumPurple",                0x9370db },
  { "MediumSeaGreen",              0x3cb371 },
  { "MediumSlateBlue",             0x7b68ee },
  { "MediumSpringGreen",           0x00fa9a },
  { "MediumTurquoise",             0x48d1cc },
  { "MediumVioletRed",             0xc71585 },
  { "MidnightBlue",                0x191970 },
  { "MintCream",                   0xf5fffa },
  { "MistyRose",                   0xffe4e1 },
  { "Moccasin",                    0xffe4b5 },
  { "NavajoWhite",                 0xffdead },
  { "Navy",                        0x000080 },
  { "None",                              -1 },  /* Non-standard addition */
  { "Off",                               -1 },  /* Non-standard addition */
  { "OldLace",                     0xfdf5e6 },
  { "Olive",                       0x808000 },
  { "OliveDrab",                   0x6b8e23 },
  { "Orange",                      0xffa500 },
  { "OrangeRed",                   0xff4500 },
  { "Orchid",                      0xda70d6 },
  { "PaleGoldenrod",               0xeee8aa },
  { "PaleGreen",                   0x98fb98 },
  { "PaleTurquoise",               0xafeeee },
  { "PaleVioletRed",               0xdb7093 },
  { "PapayaWhip",                  0xffefd5 },
  { "PeachPuff",                   0xffdab9 },
  { "Peru",                        0xcd853f },
  { "Pink",                        0xffc0cb },
  { "Plum",                        0xdda0dd },
  { "PowderBlue",                  0xb0e0e6 },
  { "Purple",                      0x800080 },
  { "RebeccaPurple",               0x663399 },
  { "Red",                         0xff0000 },
  { "RosyBrown",                   0xbc8f8f },
  { "RoyalBlue",                   0x4169e1 },
  { "SaddleBrown",                 0x8b4513 },
  { "Salmon",                      0xfa8072 },
  { "SandyBrown",                  0xf4a460 },
  { "SeaGreen",                    0x2e8b57 },
  { "Seashell",                    0xfff5ee },
  { "Sienna",                      0xa0522d },
  { "Silver",                      0xc0c0c0 },
  { "SkyBlue",                     0x87ceeb },
  { "SlateBlue",                   0x6a5acd },
  { "SlateGray",                   0x708090 },
  { "SlateGrey",                   0x708090 },
  { "Snow",                        0xfffafa },
  { "SpringGreen",                 0x00ff7f },
  { "SteelBlue",                   0x4682b4 },
  { "Tan",                         0xd2b48c },
  { "Teal",                        0x008080 },
  { "Thistle",                     0xd8bfd8 },
  { "Tomato",                      0xff6347 },
  { "Turquoise",                   0x40e0d0 },
  { "Violet",                      0xee82ee },
  { "Wheat",                       0xf5deb3 },
  { "White",                       0xffffff },
  { "WhiteSmoke",                  0xf5f5f5 },
  { "Yellow",                      0xffff00 },
  { "YellowGreen",                 0x9acd32 },
};

/* Built-in variable names.
**
** This array is constant.  When a script changes the value of one of
** these built-ins, a new PVar record is added at the head of
** the Pik.pVar list, which is searched first.  Thus the new PVar entry
** will override this default value.
**
** Units are in inches, except for "color" and "fill" which are 
** interpreted as 24-bit RGB values.
**
** Binary search used.  Must be kept in sorted order.
*/
static const struct { const char *zName; PNum val; } aBuiltin[] = {
  { "arcrad",      0.25  },
  { "arrowhead",   2.0   },
  { "arrowht",     0.08  },
  { "arrowwid",    0.06  },
  { "boxht",       0.5   },
  { "boxrad",      0.0   },
  { "boxwid",      0.75  },
  { "charht",      0.14  },
  { "charwid",     0.08  },
  { "circlerad",   0.25  },
  { "color",       0.0   },
  { "cylht",       0.5   },
  { "cylrad",      0.075 },
  { "cylwid",      0.75  },
  { "dashwid",     0.05  },
  { "diamondht",   0.75  },
  { "diamondwid",  1.0   },
  { "dotrad",      0.015 },
  { "ellipseht",   0.5   },
  { "ellipsewid",  0.75  },
  { "fileht",      0.75  },
  { "filerad",     0.15  },
  { "filewid",     0.5   },
  { "fill",        -1.0  },
  { "lineht",      0.5   },
  { "linewid",     0.5   },
  { "movewid",     0.5   },
  { "ovalht",      0.5   },
  { "ovalwid",     1.0   },
  { "scale",       1.0   },
  { "textht",      0.5   },
  { "textwid",     0.75  },
  { "thickness",   0.015 },
};


/* Methods for the "arc" class */
static void arcInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "arcrad",6,0);
  pObj->h = pObj->w;
}
/* Hack: Arcs are here rendered as quadratic Bezier curves rather
** than true arcs.  Multiple reasons: (1) the legacy-PIC parameters
** that control arcs are obscure and I could not figure out what they
** mean based on available documentation.  (2) Arcs are rarely used,
** and so do not seem that important.
*/
static PPoint arcControlPoint(int cw, PPoint f, PPoint t, PNum rScale){
  PPoint m;
  PNum dx, dy;
  m.x = 0.5*(f.x+t.x);
  m.y = 0.5*(f.y+t.y);
  dx = t.x - f.x;
  dy = t.y - f.y;
  if( cw ){
    m.x -= 0.5*rScale*dy;
    m.y += 0.5*rScale*dx;
  }else{
    m.x += 0.5*rScale*dy;
    m.y -= 0.5*rScale*dx;
  }
  return m;
}
static void arcCheck(Pik *p, PObj *pObj){
  PPoint m;
  if( p->nTPath>2 ){
    pik_error(p, &pObj->errTok, "arc geometry error");
    return;
  }
  m = arcControlPoint(pObj->cw, p->aTPath[0], p->aTPath[1], 0.5);
  pik_bbox_add_xy(&pObj->bbox, m.x, m.y);
}
static void arcRender(Pik *p, PObj *pObj){
  PPoint f, m, t;
  if( pObj->nPath<2 ) return;
  if( pObj->sw<0.0 ) return;
  f = pObj->aPath[0];
  t = pObj->aPath[1];
  m = arcControlPoint(pObj->cw,f,t,1.0);
  if( pObj->larrow ){
    pik_draw_arrowhead(p,&m,&f,pObj);
  }
  if( pObj->rarrow ){
    pik_draw_arrowhead(p,&m,&t,pObj);
  }
  pik_append_xy(p,"<path d=\"M", f.x, f.y);
  pik_append_xy(p,"Q", m.x, m.y);
  pik_append_xy(p," ", t.x, t.y);
  pik_append(p,"\" ",2);
  pik_append_style(p,pObj,0);
  pik_append(p,"\" />\n", -1);

  pik_append_txt(p, pObj, 0);
}


/* Methods for the "arrow" class */
static void arrowInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "linewid",7,0);
  pObj->h = pik_value(p, "lineht",6,0);
  pObj->rad = pik_value(p, "linerad",7,0);
  pObj->rarrow = 1;
}

/* Methods for the "box" class */
static void boxInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "boxwid",6,0);
  pObj->h = pik_value(p, "boxht",5,0);
  pObj->rad = pik_value(p, "boxrad",6,0);
}
/* Return offset from the center of the box to the compass point 
** given by parameter cp */
static PPoint boxOffset(Pik *p, PObj *pObj, int cp){
  PPoint pt = cZeroPoint;
  PNum w2 = 0.5*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PNum rad = pObj->rad;
  PNum rx;
  if( rad<=0.0 ){
    rx = 0.0;
  }else{
    if( rad>w2 ) rad = w2;
    if( rad>h2 ) rad = h2;
    rx = 0.29289321881345252392*rad;
  }
  switch( cp ){
    case CP_C:                                   break;
    case CP_N:   pt.x = 0.0;      pt.y = h2;     break;
    case CP_NE:  pt.x = w2-rx;    pt.y = h2-rx;  break;
    case CP_E:   pt.x = w2;       pt.y = 0.0;    break;
    case CP_SE:  pt.x = w2-rx;    pt.y = rx-h2;  break;
    case CP_S:   pt.x = 0.0;      pt.y = -h2;    break;
    case CP_SW:  pt.x = rx-w2;    pt.y = rx-h2;  break;
    case CP_W:   pt.x = -w2;      pt.y = 0.0;    break;
    case CP_NW:  pt.x = rx-w2;    pt.y = h2-rx;  break;
    default:     assert(0);
  }
  UNUSED_PARAMETER(p);
  return pt;
}
static PPoint boxChop(Pik *p, PObj *pObj, PPoint *pPt){
  PNum dx, dy;
  int cp = CP_C;
  PPoint chop = pObj->ptAt;
  if( pObj->w<=0.0 ) return chop;
  if( pObj->h<=0.0 ) return chop;
  dx = (pPt->x - pObj->ptAt.x)*pObj->h/pObj->w;
  dy = (pPt->y - pObj->ptAt.y);
  if( dx>0.0 ){
    if( dy>=2.414*dx ){
      cp = CP_N;
    }else if( dy>=0.414*dx ){
      cp = CP_NE;
    }else if( dy>=-0.414*dx ){
      cp = CP_E;
    }else if( dy>-2.414*dx ){
      cp = CP_SE;
    }else{
      cp = CP_S;
    }
  }else{
    if( dy>=-2.414*dx ){
      cp = CP_N;
    }else if( dy>=-0.414*dx ){
      cp = CP_NW;
    }else if( dy>=0.414*dx ){
      cp = CP_W;
    }else if( dy>2.414*dx ){
      cp = CP_SW;
    }else{
      cp = CP_S;
    }
  }
  chop = pObj->type->xOffset(p,pObj,cp);
  chop.x += pObj->ptAt.x;
  chop.y += pObj->ptAt.y;
  return chop;
}
static void boxFit(Pik *p, PObj *pObj, PNum w, PNum h){
  if( w>0 ) pObj->w = w;
  if( h>0 ) pObj->h = h;
  UNUSED_PARAMETER(p);
}
static void boxRender(Pik *p, PObj *pObj){
  PNum w2 = 0.5*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PNum rad = pObj->rad;
  PPoint pt = pObj->ptAt;
  if( pObj->sw>=0.0 ){
    if( rad<=0.0 ){
      pik_append_xy(p,"<path d=\"M", pt.x-w2,pt.y-h2);
      pik_append_xy(p,"L", pt.x+w2,pt.y-h2);
      pik_append_xy(p,"L", pt.x+w2,pt.y+h2);
      pik_append_xy(p,"L", pt.x-w2,pt.y+h2);
      pik_append(p,"Z\" ",-1);
    }else{
      /*
      **         ----       - y3
      **        /    \
      **       /      \     _ y2
      **      |        |    
      **      |        |    _ y1
      **       \      /
      **        \    /
      **         ----       _ y0
      **
      **      '  '  '  '
      **     x0 x1 x2 x3
      */
      PNum x0,x1,x2,x3,y0,y1,y2,y3;
      if( rad>w2 ) rad = w2;
      if( rad>h2 ) rad = h2;
      x0 = pt.x - w2;
      x1 = x0 + rad;
      x3 = pt.x + w2;
      x2 = x3 - rad;
      y0 = pt.y - h2;
      y1 = y0 + rad;
      y3 = pt.y + h2;
      y2 = y3 - rad;
      pik_append_xy(p,"<path d=\"M", x1, y0);
      if( x2>x1 ) pik_append_xy(p, "L", x2, y0);
      pik_append_arc(p, rad, rad, x3, y1);
      if( y2>y1 ) pik_append_xy(p, "L", x3, y2);
      pik_append_arc(p, rad, rad, x2, y3);
      if( x2>x1 ) pik_append_xy(p, "L", x1, y3);
      pik_append_arc(p, rad, rad, x0, y2);
      if( y2>y1 ) pik_append_xy(p, "L", x0, y1);
      pik_append_arc(p, rad, rad, x1, y0);
      pik_append(p,"Z\" ",-1);
    }
    pik_append_style(p,pObj,3);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}

/* Methods for the "circle" class */
static void circleInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "circlerad",9,0)*2;
  pObj->h = pObj->w;
  pObj->rad = 0.5*pObj->w;
}
static void circleNumProp(Pik *p, PObj *pObj, PToken *pId){
  /* For a circle, the width must equal the height and both must
  ** be twice the radius.  Enforce those constraints. */
  switch( pId->eType ){
    case T_DIAMETER:
    case T_RADIUS:
      pObj->w = pObj->h = 2.0*pObj->rad;
      break;
    case T_WIDTH:
      pObj->h = pObj->w;
      pObj->rad = 0.5*pObj->w;
      break;
    case T_HEIGHT:
      pObj->w = pObj->h;
      pObj->rad = 0.5*pObj->w;
      break;
  }
  UNUSED_PARAMETER(p);
}
static PPoint circleChop(Pik *p, PObj *pObj, PPoint *pPt){
  PPoint chop;
  PNum dx = pPt->x - pObj->ptAt.x;
  PNum dy = pPt->y - pObj->ptAt.y;
  PNum dist = hypot(dx,dy);
  if( dist<pObj->rad || dist<=0 ) return pObj->ptAt;
  chop.x = pObj->ptAt.x + dx*pObj->rad/dist;
  chop.y = pObj->ptAt.y + dy*pObj->rad/dist;
  UNUSED_PARAMETER(p);
  return chop;
}
static void circleFit(Pik *p, PObj *pObj, PNum w, PNum h){
  PNum mx = 0.0;
  if( w>0 ) mx = w;
  if( h>mx ) mx = h;
  if( w*h>0 && (w*w + h*h) > mx*mx ){
    mx = hypot(w,h);
  }
  if( mx>0.0 ){
    pObj->rad = 0.5*mx;
    pObj->w = pObj->h = mx;
  }
  UNUSED_PARAMETER(p);
}

static void circleRender(Pik *p, PObj *pObj){
  PNum r = pObj->rad;
  PPoint pt = pObj->ptAt;
  if( pObj->sw>=0.0 ){
    pik_append_x(p,"<circle cx=\"", pt.x, "\"");
    pik_append_y(p," cy=\"", pt.y, "\"");
    pik_append_dis(p," r=\"", r, "\" ");
    pik_append_style(p,pObj,3);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}

/* Methods for the "cylinder" class */
static void cylinderInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "cylwid",6,0);
  pObj->h = pik_value(p, "cylht",5,0);
  pObj->rad = pik_value(p, "cylrad",6,0); /* Minor radius of ellipses */
}
static void cylinderFit(Pik *p, PObj *pObj, PNum w, PNum h){
  if( w>0 ) pObj->w = w;
  if( h>0 ) pObj->h = h + 0.25*pObj->rad + pObj->sw;
  UNUSED_PARAMETER(p);
}
static void cylinderRender(Pik *p, PObj *pObj){
  PNum w2 = 0.5*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PNum rad = pObj->rad;
  PPoint pt = pObj->ptAt;
  if( pObj->sw>=0.0 ){
    if( rad>h2 ){
      rad = h2;
    }else if( rad<0 ){
      rad = 0;
    }
    pik_append_xy(p,"<path d=\"M", pt.x-w2,pt.y+h2-rad);
    pik_append_xy(p,"L", pt.x-w2,pt.y-h2+rad);
    pik_append_arc(p,w2,rad,pt.x+w2,pt.y-h2+rad);
    pik_append_xy(p,"L", pt.x+w2,pt.y+h2-rad);
    pik_append_arc(p,w2,rad,pt.x-w2,pt.y+h2-rad);
    pik_append_arc(p,w2,rad,pt.x+w2,pt.y+h2-rad);
    pik_append(p,"\" ",-1);
    pik_append_style(p,pObj,3);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}
static PPoint cylinderOffset(Pik *p, PObj *pObj, int cp){
  PPoint pt = cZeroPoint;
  PNum w2 = pObj->w*0.5;
  PNum h1 = pObj->h*0.5;
  PNum h2 = h1 - pObj->rad;
  switch( cp ){
    case CP_C:                                break;
    case CP_N:   pt.x = 0.0;   pt.y = h1;     break;
    case CP_NE:  pt.x = w2;    pt.y = h2;     break;
    case CP_E:   pt.x = w2;    pt.y = 0.0;    break;
    case CP_SE:  pt.x = w2;    pt.y = -h2;    break;
    case CP_S:   pt.x = 0.0;   pt.y = -h1;    break;
    case CP_SW:  pt.x = -w2;   pt.y = -h2;    break;
    case CP_W:   pt.x = -w2;   pt.y = 0.0;    break;
    case CP_NW:  pt.x = -w2;   pt.y = h2;     break;
    default:     assert(0);
  }
  UNUSED_PARAMETER(p);
  return pt;
}

/* Methods for the "dot" class */
static void dotInit(Pik *p, PObj *pObj){
  pObj->rad = pik_value(p, "dotrad",6,0);
  pObj->h = pObj->w = pObj->rad*6;
  pObj->fill = pObj->color;
}
static void dotNumProp(Pik *p, PObj *pObj, PToken *pId){
  switch( pId->eType ){
    case T_COLOR:
      pObj->fill = pObj->color;
      break;
    case T_FILL:
      pObj->color = pObj->fill;
      break;
  }
  UNUSED_PARAMETER(p);
}
static void dotCheck(Pik *p, PObj *pObj){
  pObj->w = pObj->h = 0;
  pik_bbox_addellipse(&pObj->bbox, pObj->ptAt.x, pObj->ptAt.y,
                       pObj->rad, pObj->rad);
  UNUSED_PARAMETER(p);
}
static PPoint dotOffset(Pik *p, PObj *pObj, int cp){
  UNUSED_PARAMETER(p);
  UNUSED_PARAMETER(pObj);
  UNUSED_PARAMETER(cp);
  return cZeroPoint;
}
static void dotRender(Pik *p, PObj *pObj){
  PNum r = pObj->rad;
  PPoint pt = pObj->ptAt;
  if( pObj->sw>=0.0 ){
    pik_append_x(p,"<circle cx=\"", pt.x, "\"");
    pik_append_y(p," cy=\"", pt.y, "\"");
    pik_append_dis(p," r=\"", r, "\"");
    pik_append_style(p,pObj,2);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}

/* Methods for the "diamond" class */
static void diamondInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "diamondwid",10,0);
  pObj->h = pik_value(p, "diamondht",9,0);
  pObj->bAltAutoFit = 1;
}
/* Return offset from the center of the box to the compass point 
** given by parameter cp */
static PPoint diamondOffset(Pik *p, PObj *pObj, int cp){
  PPoint pt = cZeroPoint;
  PNum w2 = 0.5*pObj->w;
  PNum w4 = 0.25*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PNum h4 = 0.25*pObj->h;
  switch( cp ){
    case CP_C:                                   break;
    case CP_N:   pt.x = 0.0;      pt.y = h2;     break;
    case CP_NE:  pt.x = w4;       pt.y = h4;     break;
    case CP_E:   pt.x = w2;       pt.y = 0.0;    break;
    case CP_SE:  pt.x = w4;       pt.y = -h4;    break;
    case CP_S:   pt.x = 0.0;      pt.y = -h2;    break;
    case CP_SW:  pt.x = -w4;      pt.y = -h4;    break;
    case CP_W:   pt.x = -w2;      pt.y = 0.0;    break;
    case CP_NW:  pt.x = -w4;      pt.y = h4;     break;
    default:     assert(0);
  }
  UNUSED_PARAMETER(p);
  return pt;
}
static void diamondFit(Pik *p, PObj *pObj, PNum w, PNum h){
  if( pObj->w<=0 ) pObj->w = w*1.5;
  if( pObj->h<=0 ) pObj->h = h*1.5;
  if( pObj->w>0 && pObj->h>0 ){
    PNum x = pObj->w*h/pObj->h + w;
    PNum y = pObj->h*x/pObj->w;
    pObj->w = x;
    pObj->h = y;
  }
  UNUSED_PARAMETER(p);
}
static void diamondRender(Pik *p, PObj *pObj){
  PNum w2 = 0.5*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PPoint pt = pObj->ptAt;
  if( pObj->sw>=0.0 ){
    pik_append_xy(p,"<path d=\"M", pt.x-w2,pt.y);
    pik_append_xy(p,"L", pt.x,pt.y-h2);
    pik_append_xy(p,"L", pt.x+w2,pt.y);
    pik_append_xy(p,"L", pt.x,pt.y+h2);
    pik_append(p,"Z\" ",-1);
    pik_append_style(p,pObj,3);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}


/* Methods for the "ellipse" class */
static void ellipseInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "ellipsewid",10,0);
  pObj->h = pik_value(p, "ellipseht",9,0);
}
static PPoint ellipseChop(Pik *p, PObj *pObj, PPoint *pPt){
  PPoint chop;
  PNum s, dq, dist;
  PNum dx = pPt->x - pObj->ptAt.x;
  PNum dy = pPt->y - pObj->ptAt.y;
  if( pObj->w<=0.0 ) return pObj->ptAt;
  if( pObj->h<=0.0 ) return pObj->ptAt;
  s = pObj->h/pObj->w;
  dq = dx*s;
  dist = hypot(dq,dy);
  if( dist<pObj->h ) return pObj->ptAt;
  chop.x = pObj->ptAt.x + 0.5*dq*pObj->h/(dist*s);
  chop.y = pObj->ptAt.y + 0.5*dy*pObj->h/dist;
  UNUSED_PARAMETER(p);
  return chop;
}
static PPoint ellipseOffset(Pik *p, PObj *pObj, int cp){
  PPoint pt = cZeroPoint;
  PNum w = pObj->w*0.5;
  PNum w2 = w*0.70710678118654747608;
  PNum h = pObj->h*0.5;
  PNum h2 = h*0.70710678118654747608;
  switch( cp ){
    case CP_C:                                break;
    case CP_N:   pt.x = 0.0;   pt.y = h;      break;
    case CP_NE:  pt.x = w2;    pt.y = h2;     break;
    case CP_E:   pt.x = w;     pt.y = 0.0;    break;
    case CP_SE:  pt.x = w2;    pt.y = -h2;    break;
    case CP_S:   pt.x = 0.0;   pt.y = -h;     break;
    case CP_SW:  pt.x = -w2;   pt.y = -h2;    break;
    case CP_W:   pt.x = -w;    pt.y = 0.0;    break;
    case CP_NW:  pt.x = -w2;   pt.y = h2;     break;
    default:     assert(0);
  }
  UNUSED_PARAMETER(p);
  return pt;
}
static void ellipseRender(Pik *p, PObj *pObj){
  PNum w = pObj->w;
  PNum h = pObj->h;
  PPoint pt = pObj->ptAt;
  if( pObj->sw>=0.0 ){
    pik_append_x(p,"<ellipse cx=\"", pt.x, "\"");
    pik_append_y(p," cy=\"", pt.y, "\"");
    pik_append_dis(p," rx=\"", w/2.0, "\"");
    pik_append_dis(p," ry=\"", h/2.0, "\" ");
    pik_append_style(p,pObj,3);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}

/* Methods for the "file" object */
static void fileInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "filewid",7,0);
  pObj->h = pik_value(p, "fileht",6,0);
  pObj->rad = pik_value(p, "filerad",7,0);
}
/* Return offset from the center of the file to the compass point 
** given by parameter cp */
static PPoint fileOffset(Pik *p, PObj *pObj, int cp){
  PPoint pt = cZeroPoint;
  PNum w2 = 0.5*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PNum rx = pObj->rad;
  PNum mn = w2<h2 ? w2 : h2;
  if( rx>mn ) rx = mn;
  if( rx<mn*0.25 ) rx = mn*0.25;
  pt.x = pt.y = 0.0;
  rx *= 0.5;
  switch( cp ){
    case CP_C:                                   break;
    case CP_N:   pt.x = 0.0;      pt.y = h2;     break;
    case CP_NE:  pt.x = w2-rx;    pt.y = h2-rx;  break;
    case CP_E:   pt.x = w2;       pt.y = 0.0;    break;
    case CP_SE:  pt.x = w2;       pt.y = -h2;    break;
    case CP_S:   pt.x = 0.0;      pt.y = -h2;    break;
    case CP_SW:  pt.x = -w2;      pt.y = -h2;    break;
    case CP_W:   pt.x = -w2;      pt.y = 0.0;    break;
    case CP_NW:  pt.x = -w2;      pt.y = h2;     break;
    default:     assert(0);
  }
  UNUSED_PARAMETER(p);
  return pt;
}
static void fileFit(Pik *p, PObj *pObj, PNum w, PNum h){
  if( w>0 ) pObj->w = w;
  if( h>0 ) pObj->h = h + 2*pObj->rad;
  UNUSED_PARAMETER(p);
}
static void fileRender(Pik *p, PObj *pObj){
  PNum w2 = 0.5*pObj->w;
  PNum h2 = 0.5*pObj->h;
  PNum rad = pObj->rad;
  PPoint pt = pObj->ptAt;
  PNum mn = w2<h2 ? w2 : h2;
  if( rad>mn ) rad = mn;
  if( rad<mn*0.25 ) rad = mn*0.25;
  if( pObj->sw>=0.0 ){
    pik_append_xy(p,"<path d=\"M", pt.x-w2,pt.y-h2);
    pik_append_xy(p,"L", pt.x+w2,pt.y-h2);
    pik_append_xy(p,"L", pt.x+w2,pt.y+(h2-rad));
    pik_append_xy(p,"L", pt.x+(w2-rad),pt.y+h2);
    pik_append_xy(p,"L", pt.x-w2,pt.y+h2);
    pik_append(p,"Z\" ",-1);
    pik_append_style(p,pObj,1);
    pik_append(p,"\" />\n",-1);
    pik_append_xy(p,"<path d=\"M", pt.x+(w2-rad), pt.y+h2);
    pik_append_xy(p,"L", pt.x+(w2-rad),pt.y+(h2-rad));
    pik_append_xy(p,"L", pt.x+w2, pt.y+(h2-rad));
    pik_append(p,"\" ",-1);
    pik_append_style(p,pObj,0);
    pik_append(p,"\" />\n",-1);
  }
  pik_append_txt(p, pObj, 0);
}


/* Methods for the "line" class */
static void lineInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "linewid",7,0);
  pObj->h = pik_value(p, "lineht",6,0);
  pObj->rad = pik_value(p, "linerad",7,0);
}
static PPoint lineOffset(Pik *p, PObj *pObj, int cp){
#if 0
  /* In legacy PIC, the .center of an unclosed line is half way between
  ** its .start and .end. */
  if( cp==CP_C && !pObj->bClose ){
    PPoint out;
    out.x = 0.5*(pObj->ptEnter.x + pObj->ptExit.x) - pObj->ptAt.x;
    out.y = 0.5*(pObj->ptEnter.x + pObj->ptExit.y) - pObj->ptAt.y;
    return out;
  }
#endif
  return boxOffset(p,pObj,cp);
}
static void lineRender(Pik *p, PObj *pObj){
  int i;
  if( pObj->sw>0.0 ){
    const char *z = "<path d=\"M";
    int n = pObj->nPath;
    if( pObj->larrow ){
      pik_draw_arrowhead(p,&pObj->aPath[1],&pObj->aPath[0],pObj);
    }
    if( pObj->rarrow ){
      pik_draw_arrowhead(p,&pObj->aPath[n-2],&pObj->aPath[n-1],pObj);
    }
    for(i=0; i<pObj->nPath; i++){
      pik_append_xy(p,z,pObj->aPath[i].x,pObj->aPath[i].y);
      z = "L";
    }
    if( pObj->bClose ){
      pik_append(p,"Z",1);
    }else{
      pObj->fill = -1.0;
    }
    pik_append(p,"\" ",-1);
    pik_append_style(p,pObj,pObj->bClose?3:0);
    pik_append(p,"\" />\n", -1);
  }
  pik_append_txt(p, pObj, 0);
}

/* Methods for the "move" class */
static void moveInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "movewid",7,0);
  pObj->h = pObj->w;
  pObj->fill = -1.0;
  pObj->color = -1.0;
  pObj->sw = -1.0;
}
static void moveRender(Pik *p, PObj *pObj){
  /* No-op */
  UNUSED_PARAMETER(p);
  UNUSED_PARAMETER(pObj);
}

/* Methods for the "oval" class */
static void ovalInit(Pik *p, PObj *pObj){
  pObj->h = pik_value(p, "ovalht",6,0);
  pObj->w = pik_value(p, "ovalwid",7,0);
  pObj->rad = 0.5*(pObj->h<pObj->w?pObj->h:pObj->w);
}
static void ovalNumProp(Pik *p, PObj *pObj, PToken *pId){
  UNUSED_PARAMETER(p);
  UNUSED_PARAMETER(pId);
  /* Always adjust the radius to be half of the smaller of
  ** the width and height. */
  pObj->rad = 0.5*(pObj->h<pObj->w?pObj->h:pObj->w);
}
static void ovalFit(Pik *p, PObj *pObj, PNum w, PNum h){
  UNUSED_PARAMETER(p);
  if( w>0 ) pObj->w = w;
  if( h>0 ) pObj->h = h;
  if( pObj->w<pObj->h ) pObj->w = pObj->h;
  pObj->rad = 0.5*(pObj->h<pObj->w?pObj->h:pObj->w);
}



/* Methods for the "spline" class */
static void splineInit(Pik *p, PObj *pObj){
  pObj->w = pik_value(p, "linewid",7,0);
  pObj->h = pik_value(p, "lineht",6,0);
  pObj->rad = 1000;
}
/* Return a point along the path from "f" to "t" that is r units
** prior to reaching "t", except if the path is less than 2*r total,
** return the midpoint.
*/
static PPoint radiusMidpoint(PPoint f, PPoint t, PNum r, int *pbMid){
  PNum dx = t.x - f.x;
  PNum dy = t.y - f.y;
  PNum dist = hypot(dx,dy);
  PPoint m;
  if( dist<=0.0 ) return t;
  dx /= dist;
  dy /= dist;
  if( r > 0.5*dist ){
    r = 0.5*dist;
    *pbMid = 1;
  }else{
    *pbMid = 0;
  }
  m.x = t.x - r*dx;
  m.y = t.y - r*dy;
  return m;
}
static void radiusPath(Pik *p, PObj *pObj, PNum r){
  int i;
  int n = pObj->nPath;
  const PPoint *a = pObj->aPath;
  PPoint m;
  PPoint an = a[n-1];
  int isMid = 0;
  int iLast = pObj->bClose ? n : n-1;

  pik_append_xy(p,"<path d=\"M", a[0].x, a[0].y);
  m = radiusMidpoint(a[0], a[1], r, &isMid);
  pik_append_xy(p," L ",m.x,m.y);
  for(i=1; i<iLast; i++){
    an = i<n-1 ? a[i+1] : a[0];
    m = radiusMidpoint(an,a[i],r, &isMid);
    pik_append_xy(p," Q ",a[i].x,a[i].y);
    pik_append_xy(p," ",m.x,m.y);
    if( !isMid ){
      m = radiusMidpoint(a[i],an,r, &isMid);
      pik_append_xy(p," L ",m.x,m.y);
    }
  }
  pik_append_xy(p," L ",an.x,an.y);
  if( pObj->bClose ){
    pik_append(p,"Z",1);
  }else{
    pObj->fill = -1.0;
  }
  pik_append(p,"\" ",-1);
  pik_append_style(p,pObj,pObj->bClose?3:0);
  pik_append(p,"\" />\n", -1);
}
static void splineRender(Pik *p, PObj *pObj){
  if( pObj->sw>0.0 ){
    int n = pObj->nPath;
    PNum r = pObj->rad;
    if( n<3 || r<=0.0 ){
      lineRender(p,pObj);
      return;
    }
    if( pObj->larrow ){
      pik_draw_arrowhead(p,&pObj->aPath[1],&pObj->aPath[0],pObj);
    }
    if( pObj->rarrow ){
      pik_draw_arrowhead(p,&pObj->aPath[n-2],&pObj->aPath[n-1],pObj);
    }
    radiusPath(p,pObj,pObj->rad);
  }
  pik_append_txt(p, pObj, 0);
}


/* Methods for the "text" class */
static void textInit(Pik *p, PObj *pObj){
  pik_value(p, "textwid",7,0);
  pik_value(p, "textht",6,0);
  pObj->sw = 0.0;
}
static PPoint textOffset(Pik *p, PObj *pObj, int cp){
  /* Automatically slim-down the width and height of text
  ** statements so that the bounding box tightly encloses the text,
  ** then get boxOffset() to do the offset computation.
  */
  pik_size_to_fit(p, &pObj->errTok,3);
  return boxOffset(p, pObj, cp);
}
static void textRender(Pik *p, PObj *pObj){
  pik_append_txt(p, pObj, 0);
}


/* Methods for the "sublist" class */
static void sublistInit(Pik *p, PObj *pObj){
  PList *pList = pObj->pSublist;
  int i;
  UNUSED_PARAMETER(p);
  pik_bbox_init(&pObj->bbox);
  for(i=0; i<pList->n; i++){
    pik_bbox_addbox(&pObj->bbox, &pList->a[i]->bbox);
  }
  pObj->w = pObj->bbox.ne.x - pObj->bbox.sw.x;
  pObj->h = pObj->bbox.ne.y - pObj->bbox.sw.y;
  pObj->ptAt.x = 0.5*(pObj->bbox.ne.x + pObj->bbox.sw.x);
  pObj->ptAt.y = 0.5*(pObj->bbox.ne.y + pObj->bbox.sw.y);
  pObj->mCalc |= A_WIDTH|A_HEIGHT|A_RADIUS;
}


/*
** The following array holds all the different kinds of objects.
** The special [] object is separate.
*/
static const PClass aClass[] = {
   {  /* name */          "arc",
      /* isline */        1,
      /* eJust */         0,
      /* xInit */         arcInit,
      /* xNumProp */      0,
      /* xCheck */        arcCheck,
      /* xChop */         0,
      /* xOffset */       boxOffset,
      /* xFit */          0,
      /* xRender */       arcRender
   },
   {  /* name */          "arrow",
      /* isline */        1,
      /* eJust */         0,
      /* xInit */         arrowInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         0,
      /* xOffset */       lineOffset,
      /* xFit */          0,
      /* xRender */       splineRender 
   },
   {  /* name */          "box",
      /* isline */        0,
      /* eJust */         1,
      /* xInit */         boxInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         boxChop,
      /* xOffset */       boxOffset,
      /* xFit */          boxFit,
      /* xRender */       boxRender 
   },
   {  /* name */          "circle",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         circleInit,
      /* xNumProp */      circleNumProp,
      /* xCheck */        0,
      /* xChop */         circleChop,
      /* xOffset */       ellipseOffset,
      /* xFit */          circleFit,
      /* xRender */       circleRender 
   },
   {  /* name */          "cylinder",
      /* isline */        0,
      /* eJust */         1,
      /* xInit */         cylinderInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         boxChop,
      /* xOffset */       cylinderOffset,
      /* xFit */          cylinderFit,
      /* xRender */       cylinderRender
   },
   {  /* name */          "diamond",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         diamondInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         boxChop,
      /* xOffset */       diamondOffset,
      /* xFit */          diamondFit,
      /* xRender */       diamondRender 
   },
   {  /* name */          "dot",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         dotInit,
      /* xNumProp */      dotNumProp,
      /* xCheck */        dotCheck,
      /* xChop */         circleChop,
      /* xOffset */       dotOffset,
      /* xFit */          0,
      /* xRender */       dotRender 
   },
   {  /* name */          "ellipse",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         ellipseInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         ellipseChop,
      /* xOffset */       ellipseOffset,
      /* xFit */          boxFit,
      /* xRender */       ellipseRender
   },
   {  /* name */          "file",
      /* isline */        0,
      /* eJust */         1,
      /* xInit */         fileInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         boxChop,
      /* xOffset */       fileOffset,
      /* xFit */          fileFit,
      /* xRender */       fileRender 
   },
   {  /* name */          "line",
      /* isline */        1,
      /* eJust */         0,
      /* xInit */         lineInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         0,
      /* xOffset */       lineOffset,
      /* xFit */          0,
      /* xRender */       splineRender
   },
   {  /* name */          "move",
      /* isline */        1,
      /* eJust */         0,
      /* xInit */         moveInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         0,
      /* xOffset */       boxOffset,
      /* xFit */          0,
      /* xRender */       moveRender
   },
   {  /* name */          "oval",
      /* isline */        0,
      /* eJust */         1,
      /* xInit */         ovalInit,
      /* xNumProp */      ovalNumProp,
      /* xCheck */        0,
      /* xChop */         boxChop,
      /* xOffset */       boxOffset,
      /* xFit */          ovalFit,
      /* xRender */       boxRender
   },
   {  /* name */          "spline",
      /* isline */        1,
      /* eJust */         0,
      /* xInit */         splineInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         0,
      /* xOffset */       lineOffset,
      /* xFit */          0,
      /* xRender */       splineRender
   },
   {  /* name */          "text",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         textInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         boxChop,
      /* xOffset */       textOffset,
      /* xFit */          boxFit,
      /* xRender */       textRender 
   },
};
static const PClass sublistClass = 
   {  /* name */          "[]",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         sublistInit,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         0,
      /* xOffset */       boxOffset,
      /* xFit */          0,
      /* xRender */       0 
   };
static const PClass noopClass = 
   {  /* name */          "noop",
      /* isline */        0,
      /* eJust */         0,
      /* xInit */         0,
      /* xNumProp */      0,
      /* xCheck */        0,
      /* xChop */         0,
      /* xOffset */       boxOffset,
      /* xFit */          0,
      /* xRender */       0
   };


/*
** Reduce the length of the line segment by amt (if possible) by
** modifying the location of *t.
*/
static void pik_chop(PPoint *f, PPoint *t, PNum amt){
  PNum dx = t->x - f->x;
  PNum dy = t->y - f->y;
  PNum dist = hypot(dx,dy);
  PNum r;
  if( dist<=amt ){
    *t = *f;
    return;
  }
  r = 1.0 - amt/dist;
  t->x = f->x + r*dx;
  t->y = f->y + r*dy;
}

/*
** Draw an arrowhead on the end of the line segment from pFrom to pTo.
** Also, shorten the line segment (by changing the value of pTo) so that
** the shaft of the arrow does not extend into the arrowhead.
*/
static void pik_draw_arrowhead(Pik *p, PPoint *f, PPoint *t, PObj *pObj){
  PNum dx = t->x - f->x;
  PNum dy = t->y - f->y;
  PNum dist = hypot(dx,dy);
  PNum h = p->hArrow * pObj->sw;
  PNum w = p->wArrow * pObj->sw;
  PNum e1, ddx, ddy;
  PNum bx, by;
  if( pObj->color<0.0 ) return;
  if( pObj->sw<=0.0 ) return;
  if( dist<=0.0 ) return;  /* Unable */
  dx /= dist;
  dy /= dist;
  e1 = dist - h;
  if( e1<0.0 ){
    e1 = 0.0;
    h = dist;
  }
  ddx = -w*dy;
  ddy = w*dx;
  bx = f->x + e1*dx;
  by = f->y + e1*dy;
  pik_append_xy(p,"<polygon points=\"", t->x, t->y);
  pik_append_xy(p," ",bx-ddx, by-ddy);
  pik_append_xy(p," ",bx+ddx, by+ddy);
  pik_append_clr(p,"\" style=\"fill:",pObj->color,"\"/>\n",0);
  pik_chop(f,t,h/2);
}

/*
** Compute the relative offset to an edge location from the reference for a
** an statement.
*/
static PPoint pik_elem_offset(Pik *p, PObj *pObj, int cp){
  return pObj->type->xOffset(p, pObj, cp);
}


/*
** Append raw text to zOut
*/
static void pik_append(Pik *p, const char *zText, int n){
  if( n<0 ) n = (int)strlen(zText);
  if( p->nOut+n>=p->nOutAlloc ){
    int nNew = (p->nOut+n)*2 + 1;
    char *z = realloc(p->zOut, nNew);
    if( z==0 ){
      pik_error(p, 0, 0);
      return;
    }
    p->zOut = z;
    p->nOutAlloc = nNew;
  }
  memcpy(p->zOut+p->nOut, zText, n);
  p->nOut += n;
  p->zOut[p->nOut] = 0;
}

/*
** Given a string and its length, returns true if the string begins
** with a construct which syntactically matches an HTML entity escape
** sequence (without checking for whether it's a known entity). Always
** returns false if zText[0] is false or n<4. Entities match the
** equivalent of the regexes `&#[0-9]{2,};` and
** `&[a-zA-Z][a-zA-Z0-9]+;`.
*/
static int pik_isentity(char const * zText, int n){
  int i = 0;
  if( n<4 || '&'!=zText[0] ) return 0;
  n--;
  zText++;
  if( '#'==zText[0] ){
    zText++;
    n--;
    for(i=0; i<n; i++){
      if( i>1 && ';'==zText[i] ) return 1;
      else if( zText[i]<'0' || zText[i]>'9' ) return 0;
      /* Note that &#nn; values nn<32d are not legal entities. */
    }
  }else{
    for(i=0; i<n; i++){
      if( i>1 && ';'==zText[i] ) return 1;
      else if( i>0 && zText[i]>='0' && zText[i]<='9' ){
          continue;
      }else if( zText[i]<'A' || zText[i]>'z'
               || (zText[i]>'Z' && zText[i]<'a') ) return 0;
    }
  }
  return 0;
}

/*
** Append text to zOut with HTML characters escaped.
**
**   *  The space character is changed into non-breaking space (U+00a0)
**      if mFlags has the 0x01 bit set. This is needed when outputting
**      text to preserve leading and trailing whitespace.  Turns out we
**      cannot use &nbsp; as that is an HTML-ism and is not valid in XML.
**
**   *  The "&" character is changed into "&amp;" if mFlags has the
**      0x02 bit set.  This is needed when generating error message text.
**
**   *  Except for the above, only "<" and ">" are escaped.
*/
static void pik_append_text(Pik *p, const char *zText, int n, int mFlags){
  int i;
  char c = 0;
  int bQSpace = mFlags & 1;
  int bQAmp = mFlags & 2;
  if( n<0 ) n = (int)strlen(zText);
  while( n>0 ){
    for(i=0; i<n; i++){
      c = zText[i];
      if( c=='<' || c=='>' ) break;
      if( c==' ' && bQSpace ) break;
      if( c=='&' && bQAmp ) break;
    }
    if( i ) pik_append(p, zText, i);
    if( i==n ) break;
    switch( c ){
      case '<': {  pik_append(p, "&lt;", 4);  break;  }
      case '>': {  pik_append(p, "&gt;", 4);  break;  }
      case ' ': {  pik_append(p, "\302\240;", 2);  break;  }
      case '&':
        if( pik_isentity(zText+i, n-i) ){ pik_append(p, "&", 1); }
        else { pik_append(p, "&amp;", 5); }
    }
    i++;
    n -= i;
    zText += i;
    i = 0;
  }
}

/*
** Append error message text.  This is either a raw append, or an append
** with HTML escapes, depending on whether the PIKCHR_PLAINTEXT_ERRORS flag
** is set.
*/
static void pik_append_errtxt(Pik *p, const char *zText, int n){
  if( p->mFlags & PIKCHR_PLAINTEXT_ERRORS ){
    pik_append(p, zText, n);
  }else{
    pik_append_text(p, zText, n, 0);
  }
}

/* Append a PNum value
*/
static void pik_append_num(Pik *p, const char *z,PNum v){
  char buf[100];
  snprintf(buf, sizeof(buf)-1, "%.10g", (double)v);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, z, -1);
  pik_append(p, buf, -1);
}

/* Append a PPoint value  (Used for debugging only)
*/
static void pik_append_point(Pik *p, const char *z, PPoint *pPt){
  char buf[100];
  snprintf(buf, sizeof(buf)-1, "%.10g,%.10g", 
          (double)pPt->x, (double)pPt->y);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, z, -1);
  pik_append(p, buf, -1);
}

/*
** Invert the RGB color so that it is appropriate for dark mode.
** Variable x hold the initial color.  The color is intended for use
** as a background color if isBg is true, and as a foreground color
** if isBg is false.
*/
static int pik_color_to_dark_mode(int x, int isBg){
  int r, g, b;
  int mn, mx;
  x = 0xffffff - x;
  r = (x>>16) & 0xff;
  g = (x>>8) & 0xff;
  b = x & 0xff;
  mx = r;
  if( g>mx ) mx = g;
  if( b>mx ) mx = b;
  mn = r;
  if( g<mn ) mn = g;
  if( b<mn ) mn = b;
  r = mn + (mx-r);
  g = mn + (mx-g);
  b = mn + (mx-b);
  if( isBg ){
    if( mx>127 ){
      r = (127*r)/mx;
      g = (127*g)/mx;
      b = (127*b)/mx;
    }
  }else{
    if( mn<128 && mx>mn ){
      r = 127 + ((r-mn)*128)/(mx-mn);
      g = 127 + ((g-mn)*128)/(mx-mn);
      b = 127 + ((b-mn)*128)/(mx-mn);
    }
  }
  return r*0x10000 + g*0x100 + b;
}

/* Append a PNum value surrounded by text.  Do coordinate transformations
** on the value.
*/
static void pik_append_x(Pik *p, const char *z1, PNum v, const char *z2){
  char buf[200];
  v -= p->bbox.sw.x;
  snprintf(buf, sizeof(buf)-1, "%s%g%s", z1, p->rScale*v, z2);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, buf, -1);
}
static void pik_append_y(Pik *p, const char *z1, PNum v, const char *z2){
  char buf[200];
  v = p->bbox.ne.y - v;
  snprintf(buf, sizeof(buf)-1, "%s%g%s", z1, p->rScale*v, z2);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, buf, -1);
}
static void pik_append_xy(Pik *p, const char *z1, PNum x, PNum y){
  char buf[200];
  x = x - p->bbox.sw.x;
  y = p->bbox.ne.y - y;
  snprintf(buf, sizeof(buf)-1, "%s%g,%g", z1, p->rScale*x, p->rScale*y);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, buf, -1);
}
static void pik_append_dis(Pik *p, const char *z1, PNum v, const char *z2){
  char buf[200];
  snprintf(buf, sizeof(buf)-1, "%s%g%s", z1, p->rScale*v, z2);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, buf, -1);
}

/* Append a color specification to the output.
**
** In PIKCHR_DARK_MODE, the color is inverted.  The "bg" flags indicates that
** the color is intended for use as a background color if true, or as a
** foreground color if false.  The distinction only matters for color
** inversions in PIKCHR_DARK_MODE.
*/
static void pik_append_clr(Pik *p,const char *z1,PNum v,const char *z2,int bg){
  char buf[200];
  int x = pik_round(v);
  int r, g, b;
  if( x==0 && p->fgcolor>0 && !bg ){
    x = p->fgcolor;
  }else if( bg && x>=0xffffff && p->bgcolor>0 ){
    x = p->bgcolor;
  }else if( p->mFlags & PIKCHR_DARK_MODE ){
    x = pik_color_to_dark_mode(x,bg);
  }
  r = (x>>16) & 0xff;
  g = (x>>8) & 0xff;
  b = x & 0xff;
  snprintf(buf, sizeof(buf)-1, "%srgb(%d,%d,%d)%s", z1, r, g, b, z2);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, buf, -1);
}

/* Append an SVG path A record:
**
**    A r1 r2 0 0 0 x y
*/
static void pik_append_arc(Pik *p, PNum r1, PNum r2, PNum x, PNum y){
  char buf[200];
  x = x - p->bbox.sw.x;
  y = p->bbox.ne.y - y;
  snprintf(buf, sizeof(buf)-1, "A%g %g 0 0 0 %g %g", 
     p->rScale*r1, p->rScale*r2,
     p->rScale*x, p->rScale*y);
  buf[sizeof(buf)-1] = 0;
  pik_append(p, buf, -1);
}

/* Append a style="..." text.  But, leave the quote unterminated, in case
** the caller wants to add some more.
**
** eFill is non-zero to fill in the background, or 0 if no fill should
** occur.  Non-zero values of eFill determine the "bg" flag to pik_append_clr()
** for cases when pObj->fill==pObj->color
**
**     1        fill is background, and color is foreground.
**     2        fill and color are both foreground.  (Used by "dot" objects)
**     3        fill and color are both background.  (Used by most other objs)
*/
static void pik_append_style(Pik *p, PObj *pObj, int eFill){
  int clrIsBg = 0;
  pik_append(p, " style=\"", -1);
  if( pObj->fill>=0 && eFill ){
    int fillIsBg = 1;
    if( pObj->fill==pObj->color ){
      if( eFill==2 ) fillIsBg = 0;
      if( eFill==3 ) clrIsBg = 1;
    }
    pik_append_clr(p, "fill:", pObj->fill, ";", fillIsBg);
  }else{
    pik_append(p,"fill:none;",-1);
  }
  if( pObj->sw>=0.0 && pObj->color>=0.0 ){
    PNum sw = pObj->sw;
    pik_append_dis(p, "stroke-width:", sw, ";");
    if( pObj->nPath>2 && pObj->rad<=pObj->sw ){
      pik_append(p, "stroke-linejoin:round;", -1);
    }
    pik_append_clr(p, "stroke:",pObj->color,";",clrIsBg);
    if( pObj->dotted>0.0 ){
      PNum v = pObj->dotted;
      if( sw<2.1/p->rScale ) sw = 2.1/p->rScale;
      pik_append_dis(p,"stroke-dasharray:",sw,"");
      pik_append_dis(p,",",v,";");
    }else if( pObj->dashed>0.0 ){
      PNum v = pObj->dashed;
      pik_append_dis(p,"stroke-dasharray:",v,"");
      pik_append_dis(p,",",v,";");
    }
  }
}

/*
** Compute the vertical locations for all text items in the
** object pObj.  In other words, set every pObj->aTxt[*].eCode
** value to contain exactly one of: TP_ABOVE2, TP_ABOVE, TP_CENTER,
** TP_BELOW, or TP_BELOW2 is set.
*/
static void pik_txt_vertical_layout(PObj *pObj){
  int n, i;
  PToken *aTxt;
  n = pObj->nTxt;
  if( n==0 ) return;
  aTxt = pObj->aTxt;
  if( n==1 ){
    if( (aTxt[0].eCode & TP_VMASK)==0 ){
      aTxt[0].eCode |= TP_CENTER;
    }
  }else{
    int allSlots = 0;
    int aFree[5];
    int iSlot;
    int j, mJust;
    /* If there is more than one TP_ABOVE, change the first to TP_ABOVE2. */
    for(j=mJust=0, i=n-1; i>=0; i--){
      if( aTxt[i].eCode & TP_ABOVE ){
        if( j==0 ){
          j++;
          mJust = aTxt[i].eCode & TP_JMASK;
        }else if( j==1 && mJust!=0 && (aTxt[i].eCode & mJust)==0 ){
          j++;
        }else{
          aTxt[i].eCode = (aTxt[i].eCode & ~TP_VMASK) | TP_ABOVE2;
          break;
        }
      }
    }
    /* If there is more than one TP_BELOW, change the last to TP_BELOW2 */
    for(j=mJust=0, i=0; i<n; i++){
      if( aTxt[i].eCode & TP_BELOW ){
        if( j==0 ){
          j++;
          mJust = aTxt[i].eCode & TP_JMASK;
        }else if( j==1 && mJust!=0 && (aTxt[i].eCode & mJust)==0 ){
          j++;
        }else{
          aTxt[i].eCode = (aTxt[i].eCode & ~TP_VMASK) | TP_BELOW2;
          break;
        }
      }
    }
    /* Compute a mask of all slots used */
    for(i=0; i<n; i++) allSlots |= aTxt[i].eCode & TP_VMASK;
    /* Set of an array of available slots */
    if( n==2
     && ((aTxt[0].eCode|aTxt[1].eCode)&TP_JMASK)==(TP_LJUST|TP_RJUST)
    ){
      /* Special case of two texts that have opposite justification:
      ** Allow them both to float to center. */
      iSlot = 2;
      aFree[0] = aFree[1] = TP_CENTER;
    }else{
      /* Set up the arrow so that available slots are filled from top to
      ** bottom */
      iSlot = 0;
      if( n>=4 && (allSlots & TP_ABOVE2)==0 ) aFree[iSlot++] = TP_ABOVE2;
      if( (allSlots & TP_ABOVE)==0 ) aFree[iSlot++] = TP_ABOVE;
      if( (n&1)!=0 ) aFree[iSlot++] = TP_CENTER;
      if( (allSlots & TP_BELOW)==0 ) aFree[iSlot++] = TP_BELOW;
      if( n>=4 && (allSlots & TP_BELOW2)==0 ) aFree[iSlot++] = TP_BELOW2;
    }
    /* Set the VMASK for all unassigned texts */
    for(i=iSlot=0; i<n; i++){
      if( (aTxt[i].eCode & TP_VMASK)==0 ){
        aTxt[i].eCode |= aFree[iSlot++];
      }
    }
  }
}

/* Return the font scaling factor associated with the input text attribute.
*/
static PNum pik_font_scale(PToken *t){
  PNum scale = 1.0;
  if( t->eCode & TP_BIG    ) scale *= 1.25;
  if( t->eCode & TP_SMALL  ) scale *= 0.8;
  if( t->eCode & TP_XTRA   ) scale *= scale;
  return scale;
}

/* Append multiple <text> SVG elements for the text fields of the PObj.
** Parameters:
**
**    p          The Pik object into which we are rendering
**
**    pObj       Object containing the text to be rendered
**
**    pBox       If not NULL, do no rendering at all.  Instead
**               expand the box object so that it will include all
**               of the text.
*/
static void pik_append_txt(Pik *p, PObj *pObj, PBox *pBox){
  PNum jw;          /* Justification margin relative to center */
  PNum ha2 = 0.0;   /* Height of the top row of text */
  PNum ha1 = 0.0;   /* Height of the second "above" row */
  PNum hc = 0.0;    /* Height of the center row */
  PNum hb1 = 0.0;   /* Height of the first "below" row of text */
  PNum hb2 = 0.0;   /* Height of the second "below" row */
  PNum yBase = 0.0;
  PNum sw = pObj->sw>=0.0 ? pObj->sw : 0;
  int n, i, nz;
  PNum x, y, orig_y, s;
  const char *z;
  PToken *aTxt;
  unsigned allMask = 0;

  if( p->nErr ) return;
  if( pObj->nTxt==0 ) return;
  aTxt = pObj->aTxt;
  n = pObj->nTxt;
  pik_txt_vertical_layout(pObj);
  x = pObj->ptAt.x;
  for(i=0; i<n; i++) allMask |= pObj->aTxt[i].eCode;
  if( pObj->type->isLine ){
    hc = sw*1.5;
  }else if( pObj->rad>0.0 && pObj->type->xInit==cylinderInit ){
    yBase = -0.75*pObj->rad;
  }
  if( allMask & TP_CENTER ){
    for(i=0; i<n; i++){
      if( pObj->aTxt[i].eCode & TP_CENTER ){
        s = pik_font_scale(pObj->aTxt+i);
        if( hc<s*p->charHeight ) hc = s*p->charHeight;
      }
    }
  }
  if( allMask & TP_ABOVE ){
    for(i=0; i<n; i++){
      if( pObj->aTxt[i].eCode & TP_ABOVE ){
        s = pik_font_scale(pObj->aTxt+i)*p->charHeight;
        if( ha1<s ) ha1 = s;
      }
    }
    if( allMask & TP_ABOVE2 ){
      for(i=0; i<n; i++){
        if( pObj->aTxt[i].eCode & TP_ABOVE2 ){
          s = pik_font_scale(pObj->aTxt+i)*p->charHeight;
          if( ha2<s ) ha2 = s;
        }
      }
    }
  }
  if( allMask & TP_BELOW ){
    for(i=0; i<n; i++){
      if( pObj->aTxt[i].eCode & TP_BELOW ){
        s = pik_font_scale(pObj->aTxt+i)*p->charHeight;
        if( hb1<s ) hb1 = s;
      }
    }
    if( allMask & TP_BELOW2 ){
      for(i=0; i<n; i++){
        if( pObj->aTxt[i].eCode & TP_BELOW2 ){
          s = pik_font_scale(pObj->aTxt+i)*p->charHeight;
          if( hb2<s ) hb2 = s;
        }
      }
    }
  }
  if( pObj->type->eJust==1 ){
    jw = 0.5*(pObj->w - 0.5*(p->charWidth + sw));
  }else{
    jw = 0.0;
  }
  for(i=0; i<n; i++){
    PToken *t = &aTxt[i];
    PNum xtraFontScale = pik_font_scale(t);
    PNum nx = 0;
    orig_y = pObj->ptAt.y;
    y = yBase;
    if( t->eCode & TP_ABOVE2 ) y += 0.5*hc + ha1 + 0.5*ha2;
    if( t->eCode & TP_ABOVE  ) y += 0.5*hc + 0.5*ha1;
    if( t->eCode & TP_BELOW  ) y -= 0.5*hc + 0.5*hb1;
    if( t->eCode & TP_BELOW2 ) y -= 0.5*hc + hb1 + 0.5*hb2;
    if( t->eCode & TP_LJUST  ) nx -= jw;
    if( t->eCode & TP_RJUST  ) nx += jw;

    if( pBox!=0 ){
      /* If pBox is not NULL, do not draw any <text>.  Instead, just expand
      ** pBox to include the text */
      PNum cw = pik_text_length(t, t->eCode & TP_MONO)*p->charWidth*xtraFontScale*0.01;
      PNum ch = p->charHeight*0.5*xtraFontScale;
      PNum x0, y0, x1, y1;  /* Boundary of text relative to pObj->ptAt */
      if( (t->eCode & (TP_BOLD|TP_MONO))==TP_BOLD ){
        cw *= 1.1;
      }
      if( t->eCode & TP_RJUST ){
        x0 = nx;
        y0 = y-ch;
        x1 = nx-cw;
        y1 = y+ch;
      }else if( t->eCode & TP_LJUST ){
        x0 = nx;
        y0 = y-ch;
        x1 = nx+cw;
        y1 = y+ch;
      }else{
        x0 = nx+cw/2;
        y0 = y+ch;
        x1 = nx-cw/2;
        y1 = y-ch;
      }
      if( (t->eCode & TP_ALIGN)!=0 && pObj->nPath>=2 ){
        int nn = pObj->nPath;
        PNum dx = pObj->aPath[nn-1].x - pObj->aPath[0].x;
        PNum dy = pObj->aPath[nn-1].y - pObj->aPath[0].y;
        if( dx!=0 || dy!=0 ){
          PNum dist = hypot(dx,dy);
          PNum tt;
          dx /= dist;
          dy /= dist;
          tt = dx*x0 - dy*y0;
          y0 = dy*x0 - dx*y0;
          x0 = tt;
          tt = dx*x1 - dy*y1;
          y1 = dy*x1 - dx*y1;
          x1 = tt;
        }
      }
      pik_bbox_add_xy(pBox, x+x0, orig_y+y0);
      pik_bbox_add_xy(pBox, x+x1, orig_y+y1);
      continue;
    }
    nx += x;
    y += orig_y;

    pik_append_x(p, "<text x=\"", nx, "\"");
    pik_append_y(p, " y=\"", y, "\"");
    if( t->eCode & TP_RJUST ){
      pik_append(p, " text-anchor=\"end\"", -1);
    }else if( t->eCode & TP_LJUST ){
      pik_append(p, " text-anchor=\"start\"", -1);
    }else{
      pik_append(p, " text-anchor=\"middle\"", -1);
    }
    if( t->eCode & TP_ITALIC ){
      pik_append(p, " font-style=\"italic\"", -1);
    }
    if( t->eCode & TP_BOLD ){
      pik_append(p, " font-weight=\"bold\"", -1);
    }
    if( t->eCode & TP_MONO ){
      pik_append(p, " font-family=\"monospace\"", -1);
    }
    if( pObj->color>=0.0 ){
      pik_append_clr(p, " fill=\"", pObj->color, "\"",0);
    }
    xtraFontScale *= p->fontScale;
    if( xtraFontScale<=0.99 || xtraFontScale>=1.01 ){
      pik_append_num(p, " font-size=\"", xtraFontScale*100.0);
      pik_append(p, "%\"", 2);
    }
    if( (t->eCode & TP_ALIGN)!=0 && pObj->nPath>=2 ){
      int nn = pObj->nPath;
      PNum dx = pObj->aPath[nn-1].x - pObj->aPath[0].x;
      PNum dy = pObj->aPath[nn-1].y - pObj->aPath[0].y;
      if( dx!=0 || dy!=0 ){
        PNum ang = atan2(dy,dx)*-180/M_PI;
        pik_append_num(p, " transform=\"rotate(", ang);
        pik_append_xy(p, " ", x, orig_y);
        pik_append(p,")\"",2);
      }
    }
    pik_append(p," dominant-baseline=\"central\">",-1);
    if( t->n>=2 && t->z[0]=='"' ){
      z = t->z+1;
      nz = t->n-2;
    }else{
      z = t->z;
      nz = t->n;
    }
    while( nz>0 ){
      int j;
      for(j=0; j<nz && z[j]!='\\'; j++){}
      if( j ) pik_append_text(p, z, j, 0x3);
      if( j<nz && (j+1==nz || z[j+1]=='\\') ){
        pik_append(p, "&#92;", -1);
        j++;
      }
      nz -= j+1;
      z += j+1;
    }
    pik_append(p, "</text>\n", -1);
  }
}

/*
** Append text (that will go inside of a <pre>...</pre>) that
** shows the context of an error token.
*/
static void pik_error_context(Pik *p, PToken *pErr, int nContext){
  int iErrPt;           /* Index of first byte of error from start of input */
  int iErrCol;          /* Column of the error token on its line */
  int iStart;           /* Start position of the error context */
  int iEnd;             /* End position of the error context */
  int iLineno;          /* Line number of the error */
  int iFirstLineno;     /* Line number of start of error context */
  int i;                /* Loop counter */
  int iBump = 0;        /* Bump the location of the error cursor */
  char zLineno[24];     /* Buffer in which to generate line numbers */

  iErrPt = (int)(pErr->z - p->sIn.z);
  if( iErrPt>=(int)p->sIn.n ){
    iErrPt = p->sIn.n-1;
    iBump = 1;
  }else{
    while( iErrPt>0 && (p->sIn.z[iErrPt]=='\n' || p->sIn.z[iErrPt]=='\r') ){
      iErrPt--;
      iBump = 1;
    }
  }
  iLineno = 1;
  for(i=0; i<iErrPt; i++){
    if( p->sIn.z[i]=='\n' ){
      iLineno++;
    }
  }
  iStart = 0;
  iFirstLineno = 1;
  while( iFirstLineno+nContext<iLineno ){
    while( p->sIn.z[iStart]!='\n' ){ iStart++; }
    iStart++;
    iFirstLineno++;
  }
  for(iEnd=iErrPt; p->sIn.z[iEnd]!=0 && p->sIn.z[iEnd]!='\n'; iEnd++){}
  i = iStart;
  while( iFirstLineno<=iLineno ){
    snprintf(zLineno,sizeof(zLineno)-1,"/* %4d */  ", iFirstLineno++);
    zLineno[sizeof(zLineno)-1] = 0;
    pik_append(p, zLineno, -1);
    for(i=iStart; p->sIn.z[i]!=0 && p->sIn.z[i]!='\n'; i++){}
    pik_append_errtxt(p, p->sIn.z+iStart, i-iStart);
    iStart = i+1;
    pik_append(p, "\n", 1);
  }
  for(iErrCol=0, i=iErrPt; i>0 && p->sIn.z[i]!='\n'; iErrCol++, i--){}
  for(i=0; i<iErrCol+11+iBump; i++){ pik_append(p, " ", 1); }
  for(i=0; i<(int)pErr->n; i++) pik_append(p, "^", 1);
  pik_append(p, "\n", 1);
}


/*
** Generate an error message for the output.  pErr is the token at which
** the error should point.  zMsg is the text of the error message. If
** either pErr or zMsg is NULL, generate an out-of-memory error message.
**
** This routine is a no-op if there has already been an error reported.
*/
static void pik_error(Pik *p, PToken *pErr, const char *zMsg){
  int i;
  if( p==0 ) return;
  if( p->nErr ) return;
  p->nErr++;
  if( zMsg==0 ){
    if( p->mFlags & PIKCHR_PLAINTEXT_ERRORS ){
      pik_append(p, "\nOut of memory\n", -1);
    }else{
      pik_append(p, "\n<div><p>Out of memory</p></div>\n", -1);
    }
    return;
  }
  if( pErr==0 ){
    pik_append(p, "\n", 1);
    pik_append_errtxt(p, zMsg, -1);
    return;
  }
  if( (p->mFlags & PIKCHR_PLAINTEXT_ERRORS)==0 ){
    pik_append(p, "<div><pre>\n", -1);
  }
  pik_error_context(p, pErr, 5);
  pik_append(p, "ERROR: ", -1);
  pik_append_errtxt(p, zMsg, -1);
  pik_append(p, "\n", 1);
  for(i=p->nCtx-1; i>=0; i--){
    pik_append(p, "Called from:\n", -1);
    pik_error_context(p, &p->aCtx[i], 0);
  }
  if( (p->mFlags & PIKCHR_PLAINTEXT_ERRORS)==0 ){
    pik_append(p, "</pre></div>\n", -1);
  }
}

/*
** Process an "assert( e1 == e2 )" statement.  Always return NULL.
*/
static PObj *pik_assert(Pik *p, PNum e1, PToken *pEq, PNum e2){
  char zE1[100], zE2[100], zMsg[300];

  /* Convert the numbers to strings using %g for comparison.  This
  ** limits the precision of the comparison to account for rounding error. */
  snprintf(zE1, sizeof(zE1), "%g", e1); zE1[sizeof(zE1)-1] = 0;
  snprintf(zE2, sizeof(zE2), "%g", e2); zE1[sizeof(zE2)-1] = 0;
  if( strcmp(zE1,zE2)!=0 ){
    snprintf(zMsg, sizeof(zMsg), "%.50s != %.50s", zE1, zE2);
    pik_error(p, pEq, zMsg);
  }
  return 0;
}

/*
** Process an "assert( place1 == place2 )" statement.  Always return NULL.
*/
static PObj *pik_position_assert(Pik *p, PPoint *e1, PToken *pEq, PPoint *e2){
  char zE1[100], zE2[100], zMsg[210];

  /* Convert the numbers to strings using %g for comparison.  This
  ** limits the precision of the comparison to account for rounding error. */
  snprintf(zE1, sizeof(zE1), "(%g,%g)", e1->x, e1->y); zE1[sizeof(zE1)-1] = 0;
  snprintf(zE2, sizeof(zE2), "(%g,%g)", e2->x, e2->y); zE1[sizeof(zE2)-1] = 0;
  if( strcmp(zE1,zE2)!=0 ){
    snprintf(zMsg, sizeof(zMsg), "%s != %s", zE1, zE2);
    pik_error(p, pEq, zMsg);
  }
  return 0;
}

/* Free a complete list of objects */
static void pik_elist_free(Pik *p, PList *pList){
  int i;
  if( pList==0 ) return;
  for(i=0; i<pList->n; i++){
    pik_elem_free(p, pList->a[i]);
  }
  free(pList->a);
  free(pList);
  return;
}

/* Free a single object, and its substructure */
static void pik_elem_free(Pik *p, PObj *pObj){
  if( pObj==0 ) return;
  free(pObj->zName);
  pik_elist_free(p, pObj->pSublist);
  free(pObj->aPath);
  free(pObj);
}

/* Convert a numeric literal into a number.  Return that number.
** There is no error handling because the tokenizer has already
** assured us that the numeric literal is valid.
**
** Allowed number forms:
**
**   (1)    Floating point literal
**   (2)    Same as (1) but followed by a unit: "cm", "mm", "in",
**          "px", "pt", or "pc".
**   (3)    Hex integers: 0x000000
**
** This routine returns the result in inches.  If a different unit
** is specified, the conversion happens automatically.
*/
PNum pik_atof(PToken *num){
  char *endptr;
  PNum ans;
  if( num->n>=3 && num->z[0]=='0' && (num->z[1]=='x'||num->z[1]=='X') ){
    return (PNum)strtol(num->z+2, 0, 16);
  }
  ans = strtod(num->z, &endptr);
  if( (int)(endptr - num->z)==(int)num->n-2 ){
    char c1 = endptr[0];
    char c2 = endptr[1];
    if( c1=='c' && c2=='m' ){
      ans /= 2.54;
    }else if( c1=='m' && c2=='m' ){
      ans /= 25.4;
    }else if( c1=='p' && c2=='x' ){
      ans /= 96;
    }else if( c1=='p' && c2=='t' ){
      ans /= 72;
    }else if( c1=='p' && c2=='c' ){
      ans /= 6;
    }
  }
  return ans;
}

/*
** Compute the distance between two points
*/
static PNum pik_dist(PPoint *pA, PPoint *pB){
  PNum dx, dy;
  dx = pB->x - pA->x;
  dy = pB->y - pA->y;
  return hypot(dx,dy);
}

/* Return true if a bounding box is empty.
*/
static int pik_bbox_isempty(PBox *p){
  return p->sw.x>p->ne.x;
}

/* Return true if point pPt is contained within the bounding box pBox
*/
static int pik_bbox_contains_point(PBox *pBox, PPoint *pPt){
  if( pik_bbox_isempty(pBox) ) return 0;
  if( pPt->x < pBox->sw.x ) return 0;
  if( pPt->x > pBox->ne.x ) return 0;
  if( pPt->y < pBox->sw.y ) return 0;
  if( pPt->y > pBox->ne.y ) return 0;
  return 1;
}

/* Initialize a bounding box to an empty container
*/
static void pik_bbox_init(PBox *p){
  p->sw.x = 1.0;
  p->sw.y = 1.0;
  p->ne.x = 0.0;
  p->ne.y = 0.0;
}

/* Enlarge the PBox of the first argument so that it fully
** covers the second PBox
*/
static void pik_bbox_addbox(PBox *pA, PBox *pB){
  if( pik_bbox_isempty(pA) ){
    *pA = *pB;
  }
  if( pik_bbox_isempty(pB) ) return;
  if( pA->sw.x>pB->sw.x ) pA->sw.x = pB->sw.x;
  if( pA->sw.y>pB->sw.y ) pA->sw.y = pB->sw.y;
  if( pA->ne.x<pB->ne.x ) pA->ne.x = pB->ne.x;
  if( pA->ne.y<pB->ne.y ) pA->ne.y = pB->ne.y;
}

/* Enlarge the PBox of the first argument, if necessary, so that
** it contains the point described by the 2nd and 3rd arguments.
*/
static void pik_bbox_add_xy(PBox *pA, PNum x, PNum y){
  if( pik_bbox_isempty(pA) ){
    pA->ne.x = x;
    pA->ne.y = y;
    pA->sw.x = x;
    pA->sw.y = y;
    return;
  }
  if( pA->sw.x>x ) pA->sw.x = x;
  if( pA->sw.y>y ) pA->sw.y = y;
  if( pA->ne.x<x ) pA->ne.x = x;
  if( pA->ne.y<y ) pA->ne.y = y;
}

/* Enlarge the PBox so that it is able to contain an ellipse
** centered at x,y and with radiuses rx and ry.
*/
static void pik_bbox_addellipse(PBox *pA, PNum x, PNum y, PNum rx, PNum ry){
  if( pik_bbox_isempty(pA) ){
    pA->ne.x = x+rx;
    pA->ne.y = y+ry;
    pA->sw.x = x-rx;
    pA->sw.y = y-ry;
    return;
  }
  if( pA->sw.x>x-rx ) pA->sw.x = x-rx;
  if( pA->sw.y>y-ry ) pA->sw.y = y-ry;
  if( pA->ne.x<x+rx ) pA->ne.x = x+rx;
  if( pA->ne.y<y+ry ) pA->ne.y = y+ry;
}



/* Append a new object onto the end of an object list.  The
** object list is created if it does not already exist.  Return
** the new object list.
*/
static PList *pik_elist_append(Pik *p, PList *pList, PObj *pObj){
  if( pObj==0 ) return pList;
  if( pList==0 ){
    pList = malloc(sizeof(*pList));
    if( pList==0 ){
      pik_error(p, 0, 0);
      pik_elem_free(p, pObj);
      return 0;
    }
    memset(pList, 0, sizeof(*pList));
  }
  if( pList->n>=pList->nAlloc ){
    int nNew = (pList->n+5)*2;
    PObj **pNew = realloc(pList->a, sizeof(PObj*)*nNew);
    if( pNew==0 ){
      pik_error(p, 0, 0);
      pik_elem_free(p, pObj);
      return pList;
    }
    pList->nAlloc = nNew;
    pList->a = pNew;
  }
  pList->a[pList->n++] = pObj;
  p->list = pList;
  return pList;
}

/* Convert an object class name into a PClass pointer
*/
static const PClass *pik_find_class(PToken *pId){
  int first = 0;
  int last = count(aClass) - 1;
  do{
    int mid = (first+last)/2;
    int c = strncmp(aClass[mid].zName, pId->z, pId->n);
    if( c==0 ){
      c = aClass[mid].zName[pId->n]!=0;
      if( c==0 ) return &aClass[mid];
    }
    if( c<0 ){
      first = mid + 1;
    }else{
      last = mid - 1;
    }
  }while( first<=last );
  return 0;
}

/* Allocate and return a new PObj object.
**
** If pId!=0 then pId is an identifier that defines the object class.
** If pStr!=0 then it is a STRING literal that defines a text object.
** If pSublist!=0 then this is a [...] object. If all three parameters
** are NULL then this is a no-op object used to define a PLACENAME.
*/
static PObj *pik_elem_new(Pik *p, PToken *pId, PToken *pStr,PList *pSublist){
  PObj *pNew;
  int miss = 0;

  if( p->nErr ) return 0;
  pNew = malloc( sizeof(*pNew) );
  if( pNew==0 ){
    pik_error(p,0,0);
    pik_elist_free(p, pSublist);
    return 0;
  }
  memset(pNew, 0, sizeof(*pNew));
  p->cur = pNew;
  p->nTPath = 1;
  p->thenFlag = 0;
  if( p->list==0 || p->list->n==0 ){
    pNew->ptAt.x = pNew->ptAt.y = 0.0;
    pNew->eWith = CP_C;
  }else{
    PObj *pPrior = p->list->a[p->list->n-1];
    pNew->ptAt = pPrior->ptExit;
    switch( p->eDir ){
      default:         pNew->eWith = CP_W;   break;
      case DIR_LEFT:   pNew->eWith = CP_E;   break;
      case DIR_UP:     pNew->eWith = CP_S;   break;
      case DIR_DOWN:   pNew->eWith = CP_N;   break;
    }
  }
  p->aTPath[0] = pNew->ptAt;
  pNew->with = pNew->ptAt;
  pNew->outDir = pNew->inDir = p->eDir;
  pNew->iLayer = pik_value_int(p, "layer", 5, &miss);
  if( miss ) pNew->iLayer = 1000;
  if( pNew->iLayer<0 ) pNew->iLayer = 0;
  if( pSublist ){
    pNew->type = &sublistClass;
    pNew->pSublist = pSublist;
    sublistClass.xInit(p,pNew);
    return pNew;
  }
  if( pStr ){
    PToken n;
    n.z = "text";
    n.n = 4;
    pNew->type = pik_find_class(&n);
    assert( pNew->type!=0 );
    pNew->errTok = *pStr;
    pNew->type->xInit(p, pNew);
    pik_add_txt(p, pStr, pStr->eCode);
    return pNew;
  }
  if( pId ){
    const PClass *pClass;
    pNew->errTok = *pId;
    pClass = pik_find_class(pId);
    if( pClass ){
      pNew->type = pClass;
      pNew->sw = pik_value(p, "thickness",9,0);
      pNew->fill = pik_value(p, "fill",4,0);
      pNew->color = pik_value(p, "color",5,0);
      pClass->xInit(p, pNew);
      return pNew;
    }
    pik_error(p, pId, "unknown object type");
    pik_elem_free(p, pNew);
    return 0;
  }
  pNew->type = &noopClass;
  pNew->ptExit = pNew->ptEnter = pNew->ptAt;
  return pNew;
}

/*
** If the ID token in the argument is the name of a macro, return
** the PMacro object for that macro
*/
static PMacro *pik_find_macro(Pik *p, PToken *pId){
  PMacro *pMac;
  for(pMac = p->pMacros; pMac; pMac=pMac->pNext){
    if( pMac->macroName.n==pId->n
     && strncmp(pMac->macroName.z,pId->z,pId->n)==0
    ){
      return pMac;
    }
  }
  return 0;
}

/* Add a new macro
*/
static void pik_add_macro(
  Pik *p,          /* Current Pikchr diagram */
  PToken *pId,     /* The ID token that defines the macro name */
  PToken *pCode    /* Macro body inside of {...} */
){
  PMacro *pNew = pik_find_macro(p, pId);
  if( pNew==0 ){
    pNew = malloc( sizeof(*pNew) );
    if( pNew==0 ){
      pik_error(p, 0, 0);
      return;
    }
    pNew->pNext = p->pMacros;
    p->pMacros = pNew;
    pNew->macroName = *pId;
  }
  pNew->macroBody.z = pCode->z+1;
  pNew->macroBody.n = pCode->n-2;
  pNew->inUse = 0;
}


/*
** Set the output direction and exit point for an object
*/
static void pik_elem_set_exit(PObj *pObj, int eDir){
  assert( ValidDir(eDir) );
  pObj->outDir = eDir;
  if( !pObj->type->isLine || pObj->bClose ){
    pObj->ptExit = pObj->ptAt;
    switch( pObj->outDir ){
      default:         pObj->ptExit.x += pObj->w*0.5;  break;
      case DIR_LEFT:   pObj->ptExit.x -= pObj->w*0.5;  break;
      case DIR_UP:     pObj->ptExit.y += pObj->h*0.5;  break;
      case DIR_DOWN:   pObj->ptExit.y -= pObj->h*0.5;  break;
    }
  }
}

/* Change the layout direction.
*/
static void pik_set_direction(Pik *p, int eDir){
  assert( ValidDir(eDir) );
  p->eDir = (unsigned char)eDir;

  /* It seems to make sense to reach back into the last object and
  ** change its exit point (its ".end") to correspond to the new
  ** direction.  Things just seem to work better this way.  However,
  ** legacy PIC does *not* do this.
  **
  ** The difference can be seen in a script like this:
  **
  **      arrow; circle; down; arrow
  **
  ** You can make pikchr render the above exactly like PIC
  ** by deleting the following three lines.  But I (drh) think
  ** it works better with those lines in place.
  */
  if( p->list && p->list->n ){
    pik_elem_set_exit(p->list->a[p->list->n-1], eDir);
  }
}

/* Move all coordinates contained within an object (and within its
** substructure) by dx, dy
*/
static void pik_elem_move(PObj *pObj, PNum dx, PNum dy){
  int i;
  pObj->ptAt.x += dx;
  pObj->ptAt.y += dy;
  pObj->ptEnter.x += dx;
  pObj->ptEnter.y += dy;
  pObj->ptExit.x += dx;
  pObj->ptExit.y += dy;
  pObj->bbox.ne.x += dx;
  pObj->bbox.ne.y += dy;
  pObj->bbox.sw.x += dx;
  pObj->bbox.sw.y += dy;
  for(i=0; i<pObj->nPath; i++){
    pObj->aPath[i].x += dx;
    pObj->aPath[i].y += dy;
  }
  if( pObj->pSublist ){
    pik_elist_move(pObj->pSublist, dx, dy);
  }
}
static void pik_elist_move(PList *pList, PNum dx, PNum dy){
  int i;
  for(i=0; i<pList->n; i++){
    pik_elem_move(pList->a[i], dx, dy);
  }
}

/*
** Check to see if it is ok to set the value of paraemeter mThis.
** Return 0 if it is ok. If it not ok, generate an appropriate
** error message and return non-zero.
**
** Flags are set in pObj so that the same object or conflicting
** objects may not be set again.
**
** To be ok, bit mThis must be clear and no more than one of
** the bits identified by mBlockers may be set.
*/
static int pik_param_ok(
  Pik *p,             /* For storing the error message (if any) */
  PObj *pObj,       /* The object under construction */
  PToken *pId,        /* Make the error point to this token */
  int mThis           /* Value we are trying to set */
){
  if( pObj->mProp & mThis ){
    pik_error(p, pId, "value is already set");
    return 1;
  }
  if( pObj->mCalc & mThis ){
    pik_error(p, pId, "value already fixed by prior constraints");
    return 1;
  }
  pObj->mProp |= mThis;
  return 0;
}


/*
** Set a numeric property like "width 7" or "radius 200%".
**
** The rAbs term is an absolute value to add in.  rRel is
** a relative value by which to change the current value.
*/
void pik_set_numprop(Pik *p, PToken *pId, PRel *pVal){
  PObj *pObj = p->cur;
  switch( pId->eType ){
    case T_HEIGHT:
      if( pik_param_ok(p, pObj, pId, A_HEIGHT) ) return;
      pObj->h = pObj->h*pVal->rRel + pVal->rAbs;
      break;
    case T_WIDTH:
      if( pik_param_ok(p, pObj, pId, A_WIDTH) ) return;
      pObj->w = pObj->w*pVal->rRel + pVal->rAbs;
      break;
    case T_RADIUS:
      if( pik_param_ok(p, pObj, pId, A_RADIUS) ) return;
      pObj->rad = pObj->rad*pVal->rRel + pVal->rAbs;
      break;
    case T_DIAMETER:
      if( pik_param_ok(p, pObj, pId, A_RADIUS) ) return;
      pObj->rad = pObj->rad*pVal->rRel + 0.5*pVal->rAbs; /* diam it 2x rad */
      break;
    case T_THICKNESS:
      if( pik_param_ok(p, pObj, pId, A_THICKNESS) ) return;
      pObj->sw = pObj->sw*pVal->rRel + pVal->rAbs;
      break;
  }
  if( pObj->type->xNumProp ){
    pObj->type->xNumProp(p, pObj, pId);
  }
  return;
}

/*
** Set a color property.  The argument is an RGB value.
*/
void pik_set_clrprop(Pik *p, PToken *pId, PNum rClr){
  PObj *pObj = p->cur;
  switch( pId->eType ){
    case T_FILL:
      if( pik_param_ok(p, pObj, pId, A_FILL) ) return;
      pObj->fill = rClr;
      break;
    case T_COLOR:
      if( pik_param_ok(p, pObj, pId, A_COLOR) ) return;
      pObj->color = rClr;
      break;
  }
  if( pObj->type->xNumProp ){
    pObj->type->xNumProp(p, pObj, pId);
  }
  return;
}

/*
** Set a "dashed" property like "dash 0.05"
**
** Use the value supplied by pVal if available.  If pVal==0, use
** a default.
*/
void pik_set_dashed(Pik *p, PToken *pId, PNum *pVal){
  PObj *pObj = p->cur;
  PNum v;
  switch( pId->eType ){
    case T_DOTTED:  {
      v = pVal==0 ? pik_value(p,"dashwid",7,0) : *pVal;
      pObj->dotted = v;
      pObj->dashed = 0.0;
      break;
    }
    case T_DASHED:  {
      v = pVal==0 ? pik_value(p,"dashwid",7,0) : *pVal;
      pObj->dashed = v;
      pObj->dotted = 0.0;
      break;
    }
  }
}

/*
** If the current path information came from a "same" or "same as"
** reset it.
*/
static void pik_reset_samepath(Pik *p){
  if( p->samePath ){
    p->samePath = 0;
    p->nTPath = 1;
  }
}


/* Add a new term to the path for a line-oriented object by transferring
** the information in the ptTo field over onto the path and into ptFrom
** resetting the ptTo.
*/
static void pik_then(Pik *p, PToken *pToken, PObj *pObj){
  int n;
  if( !pObj->type->isLine ){
    pik_error(p, pToken, "use with line-oriented objects only");
    return;
  }
  n = p->nTPath - 1;
  if( n<1 && (pObj->mProp & A_FROM)==0 ){
    pik_error(p, pToken, "no prior path points");
    return;
  }
  p->thenFlag = 1;
}

/* Advance to the next entry in p->aTPath.  Return its index.
*/
static int pik_next_rpath(Pik *p, PToken *pErr){
  int n = p->nTPath - 1;
  if( n+1>=(int)count(p->aTPath) ){
    pik_error(0, pErr, "too many path elements");
    return n;
  }
  n++;
  p->nTPath++;
  p->aTPath[n] = p->aTPath[n-1];
  p->mTPath = 0;
  return n;
}

/* Add a direction term to an object.  "up 0.5", or "left 3", or "down"
** or "down 50%".
*/
static void pik_add_direction(Pik *p, PToken *pDir, PRel *pVal){
  PObj *pObj = p->cur;
  int n;
  int dir;
  if( !pObj->type->isLine ){
    if( pDir ){
      pik_error(p, pDir, "use with line-oriented objects only");
    }else{
      PToken x = pik_next_semantic_token(&pObj->errTok);
      pik_error(p, &x, "syntax error");
    }
    return;
  }
  pik_reset_samepath(p);
  n = p->nTPath - 1;
  if( p->thenFlag || p->mTPath==3 || n==0 ){
    n = pik_next_rpath(p, pDir);
    p->thenFlag = 0;
  }
  dir = pDir ? pDir->eCode : p->eDir;
  switch( dir ){
    case DIR_UP:
       if( p->mTPath & 2 ) n = pik_next_rpath(p, pDir);
       p->aTPath[n].y += pVal->rAbs + pObj->h*pVal->rRel;
       p->mTPath |= 2;
       break;
    case DIR_DOWN:
       if( p->mTPath & 2 ) n = pik_next_rpath(p, pDir);
       p->aTPath[n].y -= pVal->rAbs + pObj->h*pVal->rRel;
       p->mTPath |= 2;
       break;
    case DIR_RIGHT:
       if( p->mTPath & 1 ) n = pik_next_rpath(p, pDir);
       p->aTPath[n].x += pVal->rAbs + pObj->w*pVal->rRel;
       p->mTPath |= 1;
       break;
    case DIR_LEFT:
       if( p->mTPath & 1 ) n = pik_next_rpath(p, pDir);
       p->aTPath[n].x -= pVal->rAbs + pObj->w*pVal->rRel;
       p->mTPath |= 1;
       break;
  }
  pObj->outDir = dir;
}

/* Process a movement attribute of one of these forms:
**
**         pDist   pHdgKW  rHdg    pEdgept
**     GO distance HEADING angle
**     GO distance               compasspoint
*/
static void pik_move_hdg(
  Pik *p,              /* The Pikchr context */
  PRel *pDist,         /* Distance to move */
  PToken *pHeading,    /* "heading" keyword if present */
  PNum rHdg,           /* Angle argument to "heading" keyword */
  PToken *pEdgept,     /* EDGEPT keyword "ne", "sw", etc... */
  PToken *pErr         /* Token to use for error messages */
){
  PObj *pObj = p->cur;
  int n;
  PNum rDist = pDist->rAbs + pik_value(p,"linewid",7,0)*pDist->rRel;
  if( !pObj->type->isLine ){
    pik_error(p, pErr, "use with line-oriented objects only");
    return;
  }
  pik_reset_samepath(p);
  do{
    n = pik_next_rpath(p, pErr);
  }while( n<1 );
  if( pHeading ){
    rHdg = fmod(rHdg,360.0);
  }else if( pEdgept->eEdge==CP_C ){
    pik_error(p, pEdgept, "syntax error");
    return;
  }else{
    rHdg = pik_hdg_angle[pEdgept->eEdge];
  }
  if( rHdg<=45.0 ){
    pObj->outDir = DIR_UP;
  }else if( rHdg<=135.0 ){
    pObj->outDir = DIR_RIGHT;
  }else if( rHdg<=225.0 ){
    pObj->outDir = DIR_DOWN;
  }else if( rHdg<=315.0 ){
    pObj->outDir = DIR_LEFT;
  }else{
    pObj->outDir = DIR_UP;
  }
  rHdg *= 0.017453292519943295769;  /* degrees to radians */
  p->aTPath[n].x += rDist*sin(rHdg);
  p->aTPath[n].y += rDist*cos(rHdg);
  p->mTPath = 2;
}


/* Process a movement attribute of the form "right until even with ..."
**
** pDir is the first keyword, "right" or "left" or "up" or "down".
** The movement is in that direction until its closest approach to
** the point specified by pPoint.
*/
static void pik_evenwith(Pik *p, PToken *pDir, PPoint *pPlace){
  PObj *pObj = p->cur;
  int n;
  if( !pObj->type->isLine ){
    pik_error(p, pDir, "use with line-oriented objects only");
    return;
  }
  pik_reset_samepath(p);
  n = p->nTPath - 1;
  if( p->thenFlag || p->mTPath==3 || n==0 ){
    n = pik_next_rpath(p, pDir);
    p->thenFlag = 0;
  }
  switch( pDir->eCode ){
    case DIR_DOWN:
    case DIR_UP:
       if( p->mTPath & 2 ) n = pik_next_rpath(p, pDir);
       p->aTPath[n].y = pPlace->y;
       p->mTPath |= 2;
       break;
    case DIR_RIGHT:
    case DIR_LEFT:
       if( p->mTPath & 1 ) n = pik_next_rpath(p, pDir);
       p->aTPath[n].x = pPlace->x;
       p->mTPath |= 1;
       break;
  }
  pObj->outDir = pDir->eCode;
}

/* If the last referenced object is centered at point pPt then return
** a pointer to that object.  If there is no prior object reference,
** or if the points are not the same, return NULL.
**
** This is a side-channel hack used to find the objects at which a
** line begins and ends.  For example, in
**
**        arrow from OBJ1 to OBJ2 chop
**
** The arrow object is normally just handed the coordinates of the
** centers for OBJ1 and OBJ2.  But we also want to know the specific
** object named in case there are multiple objects centered at the
** same point.
**
** See forum post 1d46e3a0bc
*/
static PObj *pik_last_ref_object(Pik *p, PPoint *pPt){
  PObj *pRes = 0;
  if( p->lastRef==0 ) return 0;
  if( p->lastRef->ptAt.x==pPt->x
   && p->lastRef->ptAt.y==pPt->y
  ){
    pRes = p->lastRef;
  }
  p->lastRef = 0;
  return pRes;
}

/* Set the "from" of an object
*/
static void pik_set_from(Pik *p, PObj *pObj, PToken *pTk, PPoint *pPt){
  if( !pObj->type->isLine ){
    pik_error(p, pTk, "use \"at\" to position this object");
    return;
  }
  if( pObj->mProp & A_FROM ){
    pik_error(p, pTk, "line start location already fixed");
    return;
  }
  if( pObj->bClose ){
    pik_error(p, pTk, "polygon is closed");
    return;
  }
  if( p->nTPath>1 ){
    PNum dx = pPt->x - p->aTPath[0].x;
    PNum dy = pPt->y - p->aTPath[0].y;
    int i;
    for(i=1; i<p->nTPath; i++){
      p->aTPath[i].x += dx;
      p->aTPath[i].y += dy;
    }
  }
  p->aTPath[0] = *pPt;
  p->mTPath = 3;
  pObj->mProp |= A_FROM;
  pObj->pFrom = pik_last_ref_object(p, pPt);
}

/* Set the "to" of an object
*/
static void pik_add_to(Pik *p, PObj *pObj, PToken *pTk, PPoint *pPt){
  int n = p->nTPath-1;
  if( !pObj->type->isLine ){
    pik_error(p, pTk, "use \"at\" to position this object");
    return;
  }
  if( pObj->bClose ){
    pik_error(p, pTk, "polygon is closed");
    return;
  }
  pik_reset_samepath(p);
  if( n==0 || p->mTPath==3 || p->thenFlag ){
    n = pik_next_rpath(p, pTk);
  }
  p->aTPath[n] = *pPt;
  p->mTPath = 3;
  pObj->pTo = pik_last_ref_object(p, pPt);
}

static void pik_close_path(Pik *p, PToken *pErr){
  PObj *pObj = p->cur;
  if( p->nTPath<3 ){
    pik_error(p, pErr,
      "need at least 3 vertexes in order to close the polygon");
    return;
  }
  if( pObj->bClose ){
    pik_error(p, pErr, "polygon already closed");
    return;
  }
  pObj->bClose = 1;
}

/* Lower the layer of the current object so that it is behind the
** given object.
*/
static void pik_behind(Pik *p, PObj *pOther){
  PObj *pObj = p->cur;
  if( p->nErr==0 && pObj->iLayer>=pOther->iLayer ){
    pObj->iLayer = pOther->iLayer - 1;
  }
}


/* Set the "at" of an object
*/
static void pik_set_at(Pik *p, PToken *pEdge, PPoint *pAt, PToken *pErrTok){
  PObj *pObj;
  static unsigned char eDirToCp[] = { CP_E, CP_S, CP_W, CP_N };
  if( p->nErr ) return;
  pObj = p->cur;

  if( pObj->type->isLine ){
    pik_error(p, pErrTok, "use \"from\" and \"to\" to position this object");
    return;
  }
  if( pObj->mProp & A_AT ){
    pik_error(p, pErrTok, "location fixed by prior \"at\"");
    return;
  }
  pObj->mProp |= A_AT;
  pObj->eWith = pEdge ? pEdge->eEdge : CP_C;
  if( pObj->eWith>=CP_END ){
    int dir = pObj->eWith==CP_END ? pObj->outDir : (pObj->inDir+2)%4;
    pObj->eWith = eDirToCp[dir];
  }
  pObj->with = *pAt;
}

/*
** Try to add a text attribute to an object
*/
static void pik_add_txt(Pik *p, PToken *pTxt, int iPos){
  PObj *pObj = p->cur;
  PToken *pT;
  if( pObj->nTxt >= count(pObj->aTxt) ){
    pik_error(p, pTxt, "too many text terms");
    return;
  }
  pT = &pObj->aTxt[pObj->nTxt++];
  *pT = *pTxt;
  pT->eCode = (short)iPos;
}

/* Merge "text-position" flags
*/
static int pik_text_position(int iPrev, PToken *pFlag){
  int iRes = iPrev;
  switch( pFlag->eType ){
    case T_LJUST:    iRes = (iRes&~TP_JMASK) | TP_LJUST;  break;
    case T_RJUST:    iRes = (iRes&~TP_JMASK) | TP_RJUST;  break;
    case T_ABOVE:    iRes = (iRes&~TP_VMASK) | TP_ABOVE;  break;
    case T_CENTER:   iRes = (iRes&~TP_VMASK) | TP_CENTER; break;
    case T_BELOW:    iRes = (iRes&~TP_VMASK) | TP_BELOW;  break;
    case T_ITALIC:   iRes |= TP_ITALIC;                   break;
    case T_BOLD:     iRes |= TP_BOLD;                     break;
    case T_MONO:     iRes |= TP_MONO;                     break;
    case T_ALIGNED:  iRes |= TP_ALIGN;                    break;
    case T_BIG:      if( iRes & TP_BIG ) iRes |= TP_XTRA;
                     else iRes = (iRes &~TP_SZMASK)|TP_BIG;   break;
    case T_SMALL:    if( iRes & TP_SMALL ) iRes |= TP_XTRA;
                     else iRes = (iRes &~TP_SZMASK)|TP_SMALL; break;
  }
  return iRes;
}

/*
** Table of scale-factor estimates for variable-width characters.
** Actual character widths vary by font.  These numbers are only
** guesses.  And this table only provides data for ASCII.
**
** 100 means normal width.
*/
static const unsigned char awChar[] = {
  /* Skip initial 32 control characters */
  /* ' ' */  45,
  /* '!' */  55,
  /* '"' */  62,
  /* '#' */  115,
  /* '$' */  90,
  /* '%' */  132,
  /* '&' */  125,
  /* '\''*/  40,

  /* '(' */  55,
  /* ')' */  55,
  /* '*' */  71,
  /* '+' */  115,
  /* ',' */  45,
  /* '-' */  48,
  /* '.' */  45,
  /* '/' */  50,

  /* '0' */  91,
  /* '1' */  91,
  /* '2' */  91,
  /* '3' */  91,
  /* '4' */  91,
  /* '5' */  91,
  /* '6' */  91,
  /* '7' */  91,

  /* '8' */  91,
  /* '9' */  91,
  /* ':' */  50,
  /* ';' */  50,
  /* '<' */ 120,
  /* '=' */ 120,
  /* '>' */ 120,
  /* '?' */  78,

  /* '@' */ 142,
  /* 'A' */ 102,
  /* 'B' */ 105,
  /* 'C' */ 110,
  /* 'D' */ 115,
  /* 'E' */ 105,
  /* 'F' */  98,
  /* 'G' */ 105,

  /* 'H' */ 125,
  /* 'I' */  58,
  /* 'J' */  58,
  /* 'K' */ 107,
  /* 'L' */  95,
  /* 'M' */ 145,
  /* 'N' */ 125,
  /* 'O' */ 115,

  /* 'P' */  95,
  /* 'Q' */ 115,
  /* 'R' */ 107,
  /* 'S' */  95,
  /* 'T' */  97,
  /* 'U' */ 118,
  /* 'V' */ 102,
  /* 'W' */ 150,

  /* 'X' */ 100,
  /* 'Y' */  93,
  /* 'Z' */ 100,
  /* '[' */  58,
  /* '\\'*/  50,
  /* ']' */  58,
  /* '^' */ 119,
  /* '_' */  72,

  /* '`' */  72,
  /* 'a' */  86,
  /* 'b' */  92,
  /* 'c' */  80,
  /* 'd' */  92,
  /* 'e' */  85,
  /* 'f' */  52,
  /* 'g' */  92,

  /* 'h' */  92,
  /* 'i' */  47,
  /* 'j' */  47,
  /* 'k' */  88,
  /* 'l' */  48,
  /* 'm' */ 135,
  /* 'n' */  92,
  /* 'o' */  86,

  /* 'p' */  92,
  /* 'q' */  92,
  /* 'r' */  69,
  /* 's' */  75,
  /* 't' */  58,
  /* 'u' */  92,
  /* 'v' */  80,
  /* 'w' */ 121,

  /* 'x' */  81,
  /* 'y' */  80,
  /* 'z' */  76,
  /* '{' */  91,
  /* '|'*/   49,
  /* '}' */  91,
  /* '~' */ 118,
};

/* Return an estimate of the width of the displayed characters
** in a character string.  The returned value is 100 times the
** average character width.
**
** Omit "\" used to escape characters.  And count entities like
** "&lt;" as a single character.  Multi-byte UTF8 characters count
** as a single character.
**
** Unless using a monospaced font, attempt to scale the answer by
** the actual characters seen.  Wide characters count more than
** narrow characters. But the widths are only guesses.
**
*/
static int pik_text_length(const PToken *pToken, const int isMonospace){
  const int stdAvg=100, monoAvg=82;
  int n = pToken->n;
  const char *z = pToken->z;
  int cnt, j;
  for(j=1, cnt=0; j<n-1; j++){
    char c = z[j];
    if( c=='\\' && z[j+1]!='&' ){
      c = z[++j];
    }else if( c=='&' ){
      int k;
      for(k=j+1; k<j+7 && z[k]!=0 && z[k]!=';'; k++){}
      if( z[k]==';' ) j = k;
      cnt += (isMonospace ? monoAvg : stdAvg) * 3 / 2;
      continue;
    }
    if( (c & 0xc0)==0xc0 ){
      while( j+1<n-1 && (z[j+1]&0xc0)==0x80 ){ j++; }
      cnt += isMonospace ? monoAvg : stdAvg;
      continue;
    }
    if( isMonospace ){
      cnt += monoAvg;
    }else if( c >= 0x20 && c <= 0x7e ){
      cnt += awChar[c-0x20];
    }else{
      cnt += stdAvg;
    }
  }
  return cnt;
}

/* Adjust the width, height, and/or radius of the object so that
** it fits around the text that has been added so far.
**
**    (1) Only text specified prior to this attribute is considered.
**    (2) The text size is estimated based on the charht and charwid
**        variable settings.
**    (3) The fitted attributes can be changed again after this
**        attribute, for example using "width 110%" if this auto-fit
**        underestimates the text size.
**    (4) Previously set attributes will not be altered.  In other words,
**        "width 1in fit" might cause the height to change, but the
**        width is now set.
**    (5) This only works for attributes that have an xFit method.
**
** The eWhich parameter is:
**
**    1:   Fit horizontally only
**    2:   Fit vertically only
**    3:   Fit both ways
*/
static void pik_size_to_fit(Pik *p, PToken *pFit, int eWhich){
  PObj *pObj;
  PNum w, h;
  PBox bbox;
  if( p->nErr ) return;
  pObj = p->cur;

  if( pObj->nTxt==0 ){
    pik_error(0, pFit, "no text to fit to");
    return;
  }
  if( pObj->type->xFit==0 ) return;
  pik_bbox_init(&bbox);
  pik_compute_layout_settings(p);
  pik_append_txt(p, pObj, &bbox);
  if( (eWhich & 1)!=0 || pObj->bAltAutoFit ){
    w = (bbox.ne.x - bbox.sw.x) + p->charWidth;
  }else{
    w = 0;
  }
  if( (eWhich & 2)!=0 || pObj->bAltAutoFit ){
    PNum h1, h2;
    h1 = (bbox.ne.y - pObj->ptAt.y);
    h2 = (pObj->ptAt.y - bbox.sw.y);
    h = 2.0*( h1<h2 ? h2 : h1 ) + 0.5*p->charHeight;
  }else{
    h = 0;
  }
  pObj->type->xFit(p, pObj, w, h);
  pObj->mProp |= A_FIT;
}

/* Set a local variable name to "val".
**
** The name might be a built-in variable or a color name.  In either case,
** a new application-defined variable is set.  Since app-defined variables
** are searched first, this will override any built-in variables.
*/
static void pik_set_var(Pik *p, PToken *pId, PNum val, PToken *pOp){
  PVar *pVar = p->pVar;
  while( pVar ){
    if( pik_token_eq(pId,pVar->zName)==0 ) break;
    pVar = pVar->pNext;
  }
  if( pVar==0 ){
    char *z;
    pVar = malloc( pId->n+1 + sizeof(*pVar) );
    if( pVar==0 ){
      pik_error(p, 0, 0);
      return;
    }
    pVar->zName = z = (char*)&pVar[1];
    memcpy(z, pId->z, pId->n);
    z[pId->n] = 0;
    pVar->pNext = p->pVar;
    pVar->val = pik_value(p, pId->z, pId->n, 0);
    p->pVar = pVar;
  }
  switch( pOp->eCode ){
    case T_PLUS:  pVar->val += val; break;
    case T_STAR:  pVar->val *= val; break;
    case T_MINUS: pVar->val -= val; break;
    case T_SLASH:
      if( val==0.0 ){
        pik_error(p, pOp, "division by zero");
      }else{
        pVar->val /= val;
      }
      break;
    default:      pVar->val = val; break;
  }
  p->bLayoutVars = 0;  /* Clear the layout setting cache */
}

/*
** Round a PNum into the nearest integer
*/
static int pik_round(PNum v){
  if( isnan(v) ) return 0;
  if( v < -2147483647 ) return (-2147483647-1);
  if( v >= 2147483647 ) return 2147483647;
  return (int)v;
}

/*
** Search for the variable named z[0..n-1] in:
**
**   * Application defined variables
**   * Built-in variables
**
** Return the value of the variable if found.  If not found
** return 0.0.  Also if pMiss is not NULL, then set it to 1
** if not found.
**
** This routine is a subroutine to pik_get_var().  But it is also
** used by object implementations to look up (possibly overwritten)
** values for built-in variables like "boxwid".
*/
static PNum pik_value(Pik *p, const char *z, int n, int *pMiss){
  PVar *pVar;
  int first, last, mid, c;
  for(pVar=p->pVar; pVar; pVar=pVar->pNext){
    if( strncmp(pVar->zName,z,n)==0 && pVar->zName[n]==0 ){
      return pVar->val;
    }
  }
  first = 0;
  last = count(aBuiltin)-1;
  while( first<=last ){
    mid = (first+last)/2;
    c = strncmp(z,aBuiltin[mid].zName,n);
    if( c==0 && aBuiltin[mid].zName[n] ) c = 1;
    if( c==0 ) return aBuiltin[mid].val;
    if( c>0 ){
      first = mid+1;
    }else{
      last = mid-1;
    }
  }
  if( pMiss ) *pMiss = 1;
  return 0.0;
}
static int pik_value_int(Pik *p, const char *z, int n, int *pMiss){
  return pik_round(pik_value(p,z,n,pMiss));
}

/*
** Look up a color-name.  Unlike other names in this program, the
** color-names are not case sensitive.  So "DarkBlue" and "darkblue"
** and "DARKBLUE" all find the same value (139).
**
** If not found, return -99.0.  Also post an error if p!=NULL.
**
** Special color names "None" and "Off" return -1.0 without causing
** an error.
*/
static PNum pik_lookup_color(Pik *p, PToken *pId){
  int first, last, mid, c = 0;
  first = 0;
  last = count(aColor)-1;
  while( first<=last ){
    const char *zClr;
    int c1, c2;
    unsigned int i;
    mid = (first+last)/2;
    zClr = aColor[mid].zName;
    for(i=0; i<pId->n; i++){
      c1 = zClr[i]&0x7f;
      if( isupper(c1) ) c1 = tolower(c1);
      c2 = pId->z[i]&0x7f;
      if( isupper(c2) ) c2 = tolower(c2);
      c = c2 - c1;
      if( c ) break;
    }
    if( c==0 && aColor[mid].zName[pId->n] ) c = -1;
    if( c==0 ) return (double)aColor[mid].val;
    if( c>0 ){
      first = mid+1;
    }else{
      last = mid-1;
    }
  }
  if( p ) pik_error(p, pId, "not a known color name");
  return -99.0;
}

/* Get the value of a variable.
**
** Search in order:
**
**    *  Application defined variables
**    *  Built-in variables
**    *  Color names
**
** If no such variable is found, throw an error.
*/
static PNum pik_get_var(Pik *p, PToken *pId){
  int miss = 0;
  PNum v = pik_value(p, pId->z, pId->n, &miss);
  if( miss==0 ) return v;
  v = pik_lookup_color(0, pId);
  if( v>-90.0 ) return v;
  pik_error(p,pId,"no such variable");
  return 0.0;
}

/* Convert a T_NTH token (ex: "2nd", "5th"} into a numeric value and
** return that value.  Throw an error if the value is too big.
*/
static short int pik_nth_value(Pik *p, PToken *pNth){
  int i = atoi(pNth->z);
  if( i>1000 ){
    pik_error(p, pNth, "value too big - max '1000th'");
    i = 1;
  }
  if( i==0 && pik_token_eq(pNth,"first")==0 ) i = 1;
  return (short int)i;
}

/* Search for the NTH object.
**
** If pBasis is not NULL then it should be a [] object.  Use the
** sublist of that [] object for the search.  If pBasis is not a []
** object, then throw an error.
**
** The pNth token describes the N-th search.  The pNth->eCode value
** is one more than the number of items to skip.  It is negative
** to search backwards.  If pNth->eType==T_ID, then it is the name
** of a class to search for.  If pNth->eType==T_LB, then
** search for a [] object.  If pNth->eType==T_LAST, then search for
** any type.
**
** Raise an error if the item is not found.
*/
static PObj *pik_find_nth(Pik *p, PObj *pBasis, PToken *pNth){
  PList *pList;
  int i, n;
  const PClass *pClass;
  if( pBasis==0 ){
    pList = p->list;
  }else{
    pList = pBasis->pSublist;
  }
  if( pList==0 ){
    pik_error(p, pNth, "no such object");
    return 0;
  }
  if( pNth->eType==T_LAST ){
    pClass = 0;
  }else if( pNth->eType==T_LB ){
    pClass = &sublistClass;
  }else{
    pClass = pik_find_class(pNth);
    if( pClass==0 ){
      pik_error(0, pNth, "no such object type");
      return 0;
    }
  }
  n = pNth->eCode;
  if( n<0 ){
    for(i=pList->n-1; i>=0; i--){
      PObj *pObj = pList->a[i];
      if( pClass && pObj->type!=pClass ) continue;
      n++;
      if( n==0 ){ return pObj; }
    }
  }else{
    for(i=0; i<pList->n; i++){
      PObj *pObj = pList->a[i];
      if( pClass && pObj->type!=pClass ) continue;
      n--;
      if( n==0 ){ return pObj; }
    }
  }
  pik_error(p, pNth, "no such object");
  return 0;
}

/* Search for an object by name.
**
** Search in pBasis->pSublist if pBasis is not NULL.  If pBasis is NULL
** then search in p->list.
*/
static PObj *pik_find_byname(Pik *p, PObj *pBasis, PToken *pName){
  PList *pList;
  int i, j;
  if( pBasis==0 ){
    pList = p->list;
  }else{
    pList = pBasis->pSublist;
  }
  if( pList==0 ){
    pik_error(p, pName, "no such object");
    return 0;
  }
  /* First look explicitly tagged objects */
  for(i=pList->n-1; i>=0; i--){
    PObj *pObj = pList->a[i];
    if( pObj->zName && pik_token_eq(pName,pObj->zName)==0 ){
      p->lastRef = pObj;
      return pObj;
    }
  }
  /* If not found, do a second pass looking for any object containing
  ** text which exactly matches pName */
  for(i=pList->n-1; i>=0; i--){
    PObj *pObj = pList->a[i];
    for(j=0; j<pObj->nTxt; j++){
      if( pObj->aTxt[j].n==pName->n+2
       && memcmp(pObj->aTxt[j].z+1,pName->z,pName->n)==0 ){
        p->lastRef = pObj;
        return pObj;
      }
    }
  }
  pik_error(p, pName, "no such object");
  return 0;
}

/* Change most of the settings for the current object to be the
** same as the pOther object, or the most recent object of the same
** type if pOther is NULL.
*/
static void pik_same(Pik *p, PObj *pOther, PToken *pErrTok){
  PObj *pObj = p->cur;
  if( p->nErr ) return;
  if( pOther==0 ){
    int i;
    for(i=(p->list ? p->list->n : 0)-1; i>=0; i--){
      pOther = p->list->a[i];
      if( pOther->type==pObj->type ) break;
    }
    if( i<0 ){
      pik_error(p, pErrTok, "no prior objects of the same type");
      return;
    }
  }
  if( pOther->nPath && pObj->type->isLine ){
    PNum dx, dy;
    int i;
    dx = p->aTPath[0].x - pOther->aPath[0].x;
    dy = p->aTPath[0].y - pOther->aPath[0].y;
    for(i=1; i<pOther->nPath; i++){
      p->aTPath[i].x = pOther->aPath[i].x + dx;
      p->aTPath[i].y = pOther->aPath[i].y + dy;
    }
    p->nTPath = pOther->nPath;
    p->mTPath = 3;
    p->samePath = 1;
  }
  if( !pObj->type->isLine ){
    pObj->w = pOther->w;
    pObj->h = pOther->h;
  }
  pObj->rad = pOther->rad;
  pObj->sw = pOther->sw;
  pObj->dashed = pOther->dashed;
  pObj->dotted = pOther->dotted;
  pObj->fill = pOther->fill;
  pObj->color = pOther->color;
  pObj->cw = pOther->cw;
  pObj->larrow = pOther->larrow;
  pObj->rarrow = pOther->rarrow;
  pObj->bClose = pOther->bClose;
  pObj->bChop = pOther->bChop;
  pObj->iLayer = pOther->iLayer;
}


/* Return a "Place" associated with object pObj.  If pEdge is NULL
** return the center of the object.  Otherwise, return the corner
** described by pEdge.
*/
static PPoint pik_place_of_elem(Pik *p, PObj *pObj, PToken *pEdge){
  PPoint pt = cZeroPoint;
  const PClass *pClass;
  if( pObj==0 ) return pt;
  if( pEdge==0 ){
    return pObj->ptAt;
  }
  pClass = pObj->type;
  if( pEdge->eType==T_EDGEPT || (pEdge->eEdge>0 && pEdge->eEdge<CP_END) ){
    pt = pClass->xOffset(p, pObj, pEdge->eEdge);
    pt.x += pObj->ptAt.x;
    pt.y += pObj->ptAt.y;
    return pt;
  }
  if( pEdge->eType==T_START ){
    return pObj->ptEnter;
  }else{
    return pObj->ptExit;
  }
}

/* Do a linear interpolation of two positions.
*/
static PPoint pik_position_between(PNum x, PPoint p1, PPoint p2){
  PPoint out;
  out.x = p2.x*x + p1.x*(1.0 - x);
  out.y = p2.y*x + p1.y*(1.0 - x);
  return out;
}

/* Compute the position that is dist away from pt at an heading angle of r
**
** The angle is a compass heading in degrees.  North is 0 (or 360).
** East is 90.  South is 180.  West is 270.  And so forth.
*/
static PPoint pik_position_at_angle(PNum dist, PNum r, PPoint pt){
  r *= 0.017453292519943295769;  /* degrees to radians */
  pt.x += dist*sin(r);
  pt.y += dist*cos(r);
  return pt;
}

/* Compute the position that is dist away at a compass point
*/
static PPoint pik_position_at_hdg(PNum dist, PToken *pD, PPoint pt){
  return pik_position_at_angle(dist, pik_hdg_angle[pD->eEdge], pt);
}

/* Return the coordinates for the n-th vertex of a line.
*/
static PPoint pik_nth_vertex(Pik *p, PToken *pNth, PToken *pErr, PObj *pObj){
  static const PPoint zero = {0, 0};
  int n;
  if( p->nErr || pObj==0 ) return p->aTPath[0];
  if( !pObj->type->isLine ){
    pik_error(p, pErr, "object is not a line");
    return zero;
  }
  n = atoi(pNth->z);
  if( n<1 || n>pObj->nPath ){
    pik_error(p, pNth, "no such vertex");
    return zero;
  }
  return pObj->aPath[n-1];
}

/* Return the value of a property of an object.
*/
static PNum pik_property_of(PObj *pObj, PToken *pProp){
  PNum v = 0.0;
  if( pObj ){
    switch( pProp->eType ){
      case T_HEIGHT:    v = pObj->h;            break;
      case T_WIDTH:     v = pObj->w;            break;
      case T_RADIUS:    v = pObj->rad;          break;
      case T_DIAMETER:  v = pObj->rad*2.0;      break;
      case T_THICKNESS: v = pObj->sw;           break;
      case T_DASHED:    v = pObj->dashed;       break;
      case T_DOTTED:    v = pObj->dotted;       break;
      case T_FILL:      v = pObj->fill;         break;
      case T_COLOR:     v = pObj->color;        break;
      case T_X:         v = pObj->ptAt.x;       break;
      case T_Y:         v = pObj->ptAt.y;       break;
      case T_TOP:       v = pObj->bbox.ne.y;    break;
      case T_BOTTOM:    v = pObj->bbox.sw.y;    break;
      case T_LEFT:      v = pObj->bbox.sw.x;    break;
      case T_RIGHT:     v = pObj->bbox.ne.x;    break;
    }
  }
  return v;
}

/* Compute one of the built-in functions
*/
static PNum pik_func(Pik *p, PToken *pFunc, PNum x, PNum y){
  PNum v = 0.0;
  switch( pFunc->eCode ){
    case FN_ABS:  v = x<0.0 ? -x : x;  break;
    case FN_COS:  v = cos(x);          break;
    case FN_INT:  v = rint(x);         break;
    case FN_SIN:  v = sin(x);          break;
    case FN_SQRT:
      if( x<0.0 ){
        pik_error(p, pFunc, "sqrt of negative value");
        v = 0.0;
      }else{
        v = sqrt(x);
      }
      break;
    case FN_MAX:  v = x>y ? x : y;   break;
    case FN_MIN:  v = x<y ? x : y;   break;
    default:      v = 0.0;
  }
  return v;
}

/* Attach a name to an object
*/
static void pik_elem_setname(Pik *p, PObj *pObj, PToken *pName){
  if( pObj==0 ) return;
  if( pName==0 ) return;
  free(pObj->zName);
  pObj->zName = malloc(pName->n+1);
  if( pObj->zName==0 ){
    pik_error(p,0,0);
  }else{
    memcpy(pObj->zName,pName->z,pName->n);
    pObj->zName[pName->n] = 0;
  }
  return;
}

/*
** Search for object located at *pCenter that has an xChop method and
** that does not enclose point pOther.
**
** Return a pointer to the object, or NULL if not found.
*/
static PObj *pik_find_chopper(PList *pList, PPoint *pCenter, PPoint *pOther){
  int i;
  if( pList==0 ) return 0;
  for(i=pList->n-1; i>=0; i--){
    PObj *pObj = pList->a[i];
    if( pObj->type->xChop!=0
     && pObj->ptAt.x==pCenter->x
     && pObj->ptAt.y==pCenter->y
     && !pik_bbox_contains_point(&pObj->bbox, pOther)
    ){
      return pObj;
    }else if( pObj->pSublist ){
      pObj = pik_find_chopper(pObj->pSublist,pCenter,pOther);
      if( pObj ) return pObj;
    }
  }
  return 0;
}

/*
** There is a line traveling from pFrom to pTo.
**
** If pObj is not null and is a choppable object, then chop at
** the boundary of pObj - where the line crosses the boundary
** of pObj.
**
** If pObj is NULL or has no xChop method, then search for some
** other object centered at pTo that is choppable and use it
** instead.
*/
static void pik_autochop(Pik *p, PPoint *pFrom, PPoint *pTo, PObj *pObj){
  if( pObj==0 || pObj->type->xChop==0 ){
    pObj = pik_find_chopper(p->list, pTo, pFrom);
  }
  if( pObj ){
    *pTo = pObj->type->xChop(p, pObj, pFrom);
  }
}

/* This routine runs after all attributes have been received
** on an object.
*/
static void pik_after_adding_attributes(Pik *p, PObj *pObj){
  int i;
  PPoint ofst;
  PNum dx, dy;

  if( p->nErr ) return;

  /* Position block objects */
  if( pObj->type->isLine==0 ){
    /* A height or width less than or equal to zero means "autofit".
    ** Change the height or width to be big enough to contain the text,
    */
    if( pObj->h<=0.0 ){
      if( pObj->nTxt==0 ){
        pObj->h = 0.0;
      }else if( pObj->w<=0.0 ){
        pik_size_to_fit(p, &pObj->errTok, 3);
      }else{
        pik_size_to_fit(p, &pObj->errTok, 2);
      }
    }
    if( pObj->w<=0.0 ){
      if( pObj->nTxt==0 ){
        pObj->w = 0.0;
      }else{
        pik_size_to_fit(p, &pObj->errTok, 1);
      }
    }
    ofst = pik_elem_offset(p, pObj, pObj->eWith);
    dx = (pObj->with.x - ofst.x) - pObj->ptAt.x;
    dy = (pObj->with.y - ofst.y) - pObj->ptAt.y;
    if( dx!=0 || dy!=0 ){
      pik_elem_move(pObj, dx, dy);
    }
  }

  /* For a line object with no movement specified, a single movement
  ** of the default length in the current direction
  */
  if( pObj->type->isLine && p->nTPath<2 ){
    pik_next_rpath(p, 0);
    assert( p->nTPath==2 );
    switch( pObj->inDir ){
      default:        p->aTPath[1].x += pObj->w; break;
      case DIR_DOWN:  p->aTPath[1].y -= pObj->h; break;
      case DIR_LEFT:  p->aTPath[1].x -= pObj->w; break;
      case DIR_UP:    p->aTPath[1].y += pObj->h; break;
    }
    if( pObj->type->xInit==arcInit ){
      pObj->outDir = (pObj->inDir + (pObj->cw ? 1 : 3))%4;
      p->eDir = (unsigned char)pObj->outDir;
      switch( pObj->outDir ){
        default:        p->aTPath[1].x += pObj->w; break;
        case DIR_DOWN:  p->aTPath[1].y -= pObj->h; break;
        case DIR_LEFT:  p->aTPath[1].x -= pObj->w; break;
        case DIR_UP:    p->aTPath[1].y += pObj->h; break;
      }
    }
  }

  /* Initialize the bounding box prior to running xCheck */
  pik_bbox_init(&pObj->bbox);

  /* Run object-specific code */
  if( pObj->type->xCheck!=0 ){
    pObj->type->xCheck(p,pObj);
    if( p->nErr ) return;
  }

  /* Compute final bounding box, entry and exit points, center
  ** point (ptAt) and path for the object
  */
  if( pObj->type->isLine ){
    pObj->aPath = malloc( sizeof(PPoint)*p->nTPath );
    if( pObj->aPath==0 ){
      pik_error(p, 0, 0);
      return;
    }else{
      pObj->nPath = p->nTPath;
      for(i=0; i<p->nTPath; i++){
        pObj->aPath[i] = p->aTPath[i];
      }
    }

    /* "chop" processing:
    ** If the line goes to the center of an object with an
    ** xChop method, then use the xChop method to trim the line.
    */
    if( pObj->bChop && pObj->nPath>=2 ){
      int n = pObj->nPath;
      pik_autochop(p, &pObj->aPath[n-2], &pObj->aPath[n-1], pObj->pTo);
      pik_autochop(p, &pObj->aPath[1], &pObj->aPath[0], pObj->pFrom);
    }

    pObj->ptEnter = pObj->aPath[0];
    pObj->ptExit = pObj->aPath[pObj->nPath-1];

    /* Compute the center of the line based on the bounding box over
    ** the vertexes.  This is a difference from PIC.  In Pikchr, the
    ** center of a line is the center of its bounding box. In PIC, the
    ** center of a line is halfway between its .start and .end.  For
    ** straight lines, this is the same point, but for multi-segment
    ** lines the result is usually diferent */
    for(i=0; i<pObj->nPath; i++){
      pik_bbox_add_xy(&pObj->bbox, pObj->aPath[i].x, pObj->aPath[i].y);
    }
    pObj->ptAt.x = (pObj->bbox.ne.x + pObj->bbox.sw.x)/2.0;
    pObj->ptAt.y = (pObj->bbox.ne.y + pObj->bbox.sw.y)/2.0;

    /* Reset the width and height of the object to be the width and height
    ** of the bounding box over vertexes */
    pObj->w = pObj->bbox.ne.x - pObj->bbox.sw.x;
    pObj->h = pObj->bbox.ne.y - pObj->bbox.sw.y;

    /* If this is a polygon (if it has the "close" attribute), then
    ** adjust the exit point */
    if( pObj->bClose ){
      /* For "closed" lines, the .end is one of the .e, .s, .w, or .n
      ** points of the bounding box, as with block objects. */
      pik_elem_set_exit(pObj, pObj->inDir);
    }
  }else{
    PNum w2 = pObj->w/2.0;
    PNum h2 = pObj->h/2.0;
    pObj->ptEnter = pObj->ptAt;
    pObj->ptExit = pObj->ptAt;
    switch( pObj->inDir ){
      default:         pObj->ptEnter.x -= w2;  break;
      case DIR_LEFT:   pObj->ptEnter.x += w2;  break;
      case DIR_UP:     pObj->ptEnter.y -= h2;  break;
      case DIR_DOWN:   pObj->ptEnter.y += h2;  break;
    }
    switch( pObj->outDir ){
      default:         pObj->ptExit.x += w2;  break;
      case DIR_LEFT:   pObj->ptExit.x -= w2;  break;
      case DIR_UP:     pObj->ptExit.y += h2;  break;
      case DIR_DOWN:   pObj->ptExit.y -= h2;  break;
    }
    pik_bbox_add_xy(&pObj->bbox, pObj->ptAt.x - w2, pObj->ptAt.y - h2);
    pik_bbox_add_xy(&pObj->bbox, pObj->ptAt.x + w2, pObj->ptAt.y + h2);
  }
  p->eDir = (unsigned char)pObj->outDir;
}

/* Show basic information about each object as a comment in the
** generated HTML.  Used for testing and debugging.  Activated
** by the (undocumented) "debug = 1;"
** command.
*/
static void pik_elem_render(Pik *p, PObj *pObj){
  char *zDir;
  if( pObj==0 ) return;
  pik_append(p,"<!-- ", -1);
  if( pObj->zName ){
    pik_append_text(p, pObj->zName, -1, 0);
    pik_append(p, ": ", 2);
  }
  pik_append_text(p, pObj->type->zName, -1, 0);
  if( pObj->nTxt ){
    pik_append(p, " \"", 2);
    pik_append_text(p, pObj->aTxt[0].z+1, pObj->aTxt[0].n-2, 1);
    pik_append(p, "\"", 1);
  }
  pik_append_num(p, " w=", pObj->w);
  pik_append_num(p, " h=", pObj->h);
  pik_append_point(p, " center=", &pObj->ptAt);
  pik_append_point(p, " enter=", &pObj->ptEnter);
  switch( pObj->outDir ){
    default:        zDir = " right";  break;
    case DIR_LEFT:  zDir = " left";   break;
    case DIR_UP:    zDir = " up";     break;
    case DIR_DOWN:  zDir = " down";   break;
  }
  pik_append_point(p, " exit=", &pObj->ptExit);
  pik_append(p, zDir, -1);
  pik_append(p, " -->\n", -1);
}

/* Render a list of objects
*/
void pik_elist_render(Pik *p, PList *pList){
  int i;
  int iNextLayer = 0;
  int iThisLayer;
  int bMoreToDo;
  int miss = 0;
  int mDebug = pik_value_int(p, "debug", 5, 0);
  PNum colorLabel;
  do{
    bMoreToDo = 0;
    iThisLayer = iNextLayer;
    iNextLayer = 0x7fffffff;
    for(i=0; i<pList->n; i++){
      PObj *pObj = pList->a[i];
      void (*xRender)(Pik*,PObj*);
      if( pObj->iLayer>iThisLayer ){
        if( pObj->iLayer<iNextLayer ) iNextLayer = pObj->iLayer;
        bMoreToDo = 1;
        continue; /* Defer until another round */
      }else if( pObj->iLayer<iThisLayer ){
        continue;
      }
      if( mDebug & 1 ) pik_elem_render(p, pObj);
      xRender = pObj->type->xRender;
      if( xRender ){
        xRender(p, pObj);
      }
      if( pObj->pSublist ){
        pik_elist_render(p, pObj->pSublist);
      }
    }
  }while( bMoreToDo );

  /* If the color_debug_label value is defined, then go through
  ** and paint a dot at every label location */
  colorLabel = pik_value(p, "debug_label_color", 17, &miss);
  if( miss==0 && colorLabel>=0.0 ){
    PObj dot;
    memset(&dot, 0, sizeof(dot));
    dot.type = &noopClass;
    dot.rad = 0.015;
    dot.sw = 0.015;
    dot.fill = colorLabel;
    dot.color = colorLabel;
    dot.nTxt = 1;
    dot.aTxt[0].eCode = TP_ABOVE;
    for(i=0; i<pList->n; i++){
      PObj *pObj = pList->a[i];
      if( pObj->zName==0 ) continue;
      dot.ptAt = pObj->ptAt;
      dot.aTxt[0].z = pObj->zName;
      dot.aTxt[0].n = (int)strlen(pObj->zName);
      dotRender(p, &dot);
    }
  }
}

/* Add all objects of the list pList to the bounding box
*/
static void pik_bbox_add_elist(Pik *p, PList *pList, PNum wArrow){
  int i;
  for(i=0; i<pList->n; i++){
    PObj *pObj = pList->a[i];
    if( pObj->sw>=0.0 ) pik_bbox_addbox(&p->bbox, &pObj->bbox);
    pik_append_txt(p, pObj, &p->bbox);
    if( pObj->pSublist ) pik_bbox_add_elist(p, pObj->pSublist, wArrow);


    /* Expand the bounding box to account for arrowheads on lines */
    if( pObj->type->isLine && pObj->nPath>0 ){
      if( pObj->larrow ){
        pik_bbox_addellipse(&p->bbox, pObj->aPath[0].x, pObj->aPath[0].y,
                            wArrow, wArrow);
      }
      if( pObj->rarrow ){
        int j = pObj->nPath-1;
        pik_bbox_addellipse(&p->bbox, pObj->aPath[j].x, pObj->aPath[j].y,
                            wArrow, wArrow);
      }
    }
  }
}

/* Recompute key layout parameters from variables. */
static void pik_compute_layout_settings(Pik *p){
  PNum thickness;  /* Line thickness */
  PNum wArrow;     /* Width of arrowheads */

  /* Set up rendering parameters */
  if( p->bLayoutVars ) return;
  thickness = pik_value(p,"thickness",9,0);
  if( thickness<=0.01 ) thickness = 0.01;
  wArrow = 0.5*pik_value(p,"arrowwid",8,0);
  p->wArrow = wArrow/thickness;
  p->hArrow = pik_value(p,"arrowht",7,0)/thickness;
  p->fontScale = pik_value(p,"fontscale",9,0);
  if( p->fontScale<=0.0 ) p->fontScale = 1.0;
  p->rScale = 144.0;
  p->charWidth = pik_value(p,"charwid",7,0)*p->fontScale;
  p->charHeight = pik_value(p,"charht",6,0)*p->fontScale;
  p->bLayoutVars = 1;
}

/* Render a list of objects.  Write the SVG into p->zOut.
** Delete the input object_list before returnning.
*/
static void pik_render(Pik *p, PList *pList){
  if( pList==0 ) return;
  if( p->nErr==0 ){
    PNum thickness;  /* Stroke width */
    PNum margin;     /* Extra bounding box margin */
    PNum w, h;       /* Drawing width and height */
    PNum wArrow;
    PNum pikScale;   /* Value of the "scale" variable */
    int miss = 0;

    /* Set up rendering parameters */
    pik_compute_layout_settings(p);
    thickness = pik_value(p,"thickness",9,0);
    if( thickness<=0.01 ) thickness = 0.01;
    margin = pik_value(p,"margin",6,0);
    margin += thickness;
    wArrow = p->wArrow*thickness;
    miss = 0;
    p->fgcolor = pik_value_int(p,"fgcolor",7,&miss);
    if( miss ){
      PToken t;
      t.z = "fgcolor";
      t.n = 7;
      p->fgcolor = pik_round(pik_lookup_color(0, &t));
    }
    miss = 0;
    p->bgcolor = pik_value_int(p,"bgcolor",7,&miss);
    if( miss ){
      PToken t;
      t.z = "bgcolor";
      t.n = 7;
      p->bgcolor = pik_round(pik_lookup_color(0, &t));
    }

    /* Compute a bounding box over all objects so that we can know
    ** how big to declare the SVG canvas */
    pik_bbox_init(&p->bbox);
    pik_bbox_add_elist(p, pList, wArrow);

    /* Expand the bounding box slightly to account for line thickness
    ** and the optional "margin = EXPR" setting. */
    p->bbox.ne.x += margin + pik_value(p,"rightmargin",11,0);
    p->bbox.ne.y += margin + pik_value(p,"topmargin",9,0);
    p->bbox.sw.x -= margin + pik_value(p,"leftmargin",10,0);
    p->bbox.sw.y -= margin + pik_value(p,"bottommargin",12,0);

    /* Output the SVG */
    pik_append(p, "<svg xmlns='http://www.w3.org/2000/svg'"
                  " style='font-size:initial;'",-1);
    if( p->zClass ){
      pik_append(p, " class=\"", -1);
      pik_append(p, p->zClass, -1);
      pik_append(p, "\"", 1);
    }
    w = p->bbox.ne.x - p->bbox.sw.x;
    h = p->bbox.ne.y - p->bbox.sw.y;
    p->wSVG = pik_round(p->rScale*w);
    p->hSVG = pik_round(p->rScale*h);
    pikScale = pik_value(p,"scale",5,0);
    if( pikScale>=0.001 && pikScale<=1000.0
     && (pikScale<0.99 || pikScale>1.01)
    ){
      p->wSVG = pik_round(p->wSVG*pikScale);
      p->hSVG = pik_round(p->hSVG*pikScale);
      pik_append_num(p, " width=\"", p->wSVG);
      pik_append_num(p, "\" height=\"", p->hSVG);
      pik_append(p, "\"", 1);
    }
    pik_append_dis(p, " viewBox=\"0 0 ",w,"");
    pik_append_dis(p, " ",h,"\">\n");
    pik_elist_render(p, pList);
    pik_append(p,"</svg>\n", -1);
  }else{
    p->wSVG = -1;
    p->hSVG = -1;
  }
  pik_elist_free(p, pList);
}



/*
** An array of this structure defines a list of keywords.
*/
typedef struct PikWord {
  char *zWord;             /* Text of the keyword */
  unsigned char nChar;     /* Length of keyword text in bytes */
  unsigned char eType;     /* Token code */
  unsigned char eCode;     /* Extra code for the token */
  unsigned char eEdge;     /* CP_* code for corner/edge keywords */
} PikWord;

/*
** Keywords
*/
static const PikWord pik_keywords[] = {
  { "above",      5,   T_ABOVE,     0,         0        },
  { "abs",        3,   T_FUNC1,     FN_ABS,    0        },
  { "aligned",    7,   T_ALIGNED,   0,         0        },
  { "and",        3,   T_AND,       0,         0        },
  { "as",         2,   T_AS,        0,         0        },
  { "assert",     6,   T_ASSERT,    0,         0        },
  { "at",         2,   T_AT,        0,         0        },
  { "behind",     6,   T_BEHIND,    0,         0        },
  { "below",      5,   T_BELOW,     0,         0        },
  { "between",    7,   T_BETWEEN,   0,         0        },
  { "big",        3,   T_BIG,       0,         0        },
  { "bold",       4,   T_BOLD,      0,         0        },
  { "bot",        3,   T_EDGEPT,    0,         CP_S     },
  { "bottom",     6,   T_BOTTOM,    0,         CP_S     },
  { "c",          1,   T_EDGEPT,    0,         CP_C     },
  { "ccw",        3,   T_CCW,       0,         0        },
  { "center",     6,   T_CENTER,    0,         CP_C     },
  { "chop",       4,   T_CHOP,      0,         0        },
  { "close",      5,   T_CLOSE,     0,         0        },
  { "color",      5,   T_COLOR,     0,         0        },
  { "cos",        3,   T_FUNC1,     FN_COS,    0        },
  { "cw",         2,   T_CW,        0,         0        },
  { "dashed",     6,   T_DASHED,    0,         0        },
  { "define",     6,   T_DEFINE,    0,         0        },
  { "diameter",   8,   T_DIAMETER,  0,         0        },
  { "dist",       4,   T_DIST,      0,         0        },
  { "dotted",     6,   T_DOTTED,    0,         0        },
  { "down",       4,   T_DOWN,      DIR_DOWN,  0        },
  { "e",          1,   T_EDGEPT,    0,         CP_E     },
  { "east",       4,   T_EDGEPT,    0,         CP_E     },
  { "end",        3,   T_END,       0,         CP_END   },
  { "even",       4,   T_EVEN,      0,         0        },
  { "fill",       4,   T_FILL,      0,         0        },
  { "first",      5,   T_NTH,       0,         0        },
  { "fit",        3,   T_FIT,       0,         0        },
  { "from",       4,   T_FROM,      0,         0        },
  { "go",         2,   T_GO,        0,         0        },
  { "heading",    7,   T_HEADING,   0,         0        },
  { "height",     6,   T_HEIGHT,    0,         0        },
  { "ht",         2,   T_HEIGHT,    0,         0        },
  { "in",         2,   T_IN,        0,         0        },
  { "int",        3,   T_FUNC1,     FN_INT,    0        },
  { "invis",      5,   T_INVIS,     0,         0        },
  { "invisible",  9,   T_INVIS,     0,         0        },
  { "italic",     6,   T_ITALIC,    0,         0        },
  { "last",       4,   T_LAST,      0,         0        },
  { "left",       4,   T_LEFT,      DIR_LEFT,  CP_W     },
  { "ljust",      5,   T_LJUST,     0,         0        },
  { "max",        3,   T_FUNC2,     FN_MAX,    0        },
  { "min",        3,   T_FUNC2,     FN_MIN,    0        },
  { "mono",       4,   T_MONO,      0,         0        },
  { "monospace",  9,   T_MONO,      0,         0        },
  { "n",          1,   T_EDGEPT,    0,         CP_N     },
  { "ne",         2,   T_EDGEPT,    0,         CP_NE    },
  { "north",      5,   T_EDGEPT,    0,         CP_N     },
  { "nw",         2,   T_EDGEPT,    0,         CP_NW    },
  { "of",         2,   T_OF,        0,         0        },
  { "previous",   8,   T_LAST,      0,         0,       },
  { "print",      5,   T_PRINT,     0,         0        },
  { "rad",        3,   T_RADIUS,    0,         0        },
  { "radius",     6,   T_RADIUS,    0,         0        },
  { "right",      5,   T_RIGHT,     DIR_RIGHT, CP_E     },
  { "rjust",      5,   T_RJUST,     0,         0        },
  { "s",          1,   T_EDGEPT,    0,         CP_S     },
  { "same",       4,   T_SAME,      0,         0        },
  { "se",         2,   T_EDGEPT,    0,         CP_SE    },
  { "sin",        3,   T_FUNC1,     FN_SIN,    0        },
  { "small",      5,   T_SMALL,     0,         0        },
  { "solid",      5,   T_SOLID,     0,         0        },
  { "south",      5,   T_EDGEPT,    0,         CP_S     },
  { "sqrt",       4,   T_FUNC1,     FN_SQRT,   0        },
  { "start",      5,   T_START,     0,         CP_START },
  { "sw",         2,   T_EDGEPT,    0,         CP_SW    },
  { "t",          1,   T_TOP,       0,         CP_N     },
  { "the",        3,   T_THE,       0,         0        },
  { "then",       4,   T_THEN,      0,         0        },
  { "thick",      5,   T_THICK,     0,         0        },
  { "thickness",  9,   T_THICKNESS, 0,         0        },
  { "thin",       4,   T_THIN,      0,         0        },
  { "this",       4,   T_THIS,      0,         0        },
  { "to",         2,   T_TO,        0,         0        },
  { "top",        3,   T_TOP,       0,         CP_N     },
  { "until",      5,   T_UNTIL,     0,         0        },
  { "up",         2,   T_UP,        DIR_UP,    0        },
  { "vertex",     6,   T_VERTEX,    0,         0        },
  { "w",          1,   T_EDGEPT,    0,         CP_W     },
  { "way",        3,   T_WAY,       0,         0        },
  { "west",       4,   T_EDGEPT,    0,         CP_W     },
  { "wid",        3,   T_WIDTH,     0,         0        },
  { "width",      5,   T_WIDTH,     0,         0        },
  { "with",       4,   T_WITH,      0,         0        },
  { "x",          1,   T_X,         0,         0        },
  { "y",          1,   T_Y,         0,         0        },
};

/*
** Search a PikWordlist for the given keyword.  Return a pointer to the
** keyword entry found.  Or return 0 if not found.
*/
static const PikWord *pik_find_word(
  const char *zIn,              /* Word to search for */
  int n,                        /* Length of zIn */
  const PikWord *aList,         /* List to search */
  int nList                     /* Number of entries in aList */
){
  int first = 0;
  int last = nList-1;
  while( first<=last ){
    int mid = (first + last)/2;
    int sz = aList[mid].nChar;
    int c = strncmp(zIn, aList[mid].zWord, sz<n ? sz : n);
    if( c==0 ){
      c = n - sz;
      if( c==0 ) return &aList[mid];
    }
    if( c<0 ){
      last = mid-1;
    }else{
      first = mid+1;
    }
  }
  return 0;
}

/*
** Set a symbolic debugger breakpoint on this routine to receive a
** breakpoint when the "#breakpoint" token is parsed.
*/
static void pik_breakpoint(const unsigned char *z){
  /* Prevent C compilers from optimizing out this routine. */
  if( z[2]=='X' ) exit(1);
}


/*
** Return the length of next token.  The token starts on
** the pToken->z character.  Fill in other fields of the
** pToken object as appropriate.
*/
static int pik_token_length(PToken *pToken, int bAllowCodeBlock){
  const unsigned char *z = (const unsigned char*)pToken->z;
  int i;
  unsigned char c, c2;
  switch( z[0] ){
    case '\\': {
      pToken->eType = T_WHITESPACE;
      for(i=1; z[i]=='\r' || z[i]==' ' || z[i]=='\t'; i++){}
      if( z[i]=='\n'  ) return i+1;
      pToken->eType = T_ERROR;
      return 1;
    }
    case ';':
    case '\n': {
      pToken->eType = T_EOL;
      return 1;
    }
    case '"': {
      for(i=1; (c = z[i])!=0; i++){
        if( c=='\\' ){ 
          if( z[i+1]==0 ) break;
          i++;
          continue;
        }
        if( c=='"' ){
          pToken->eType = T_STRING;
          return i+1;
        }
      }
      pToken->eType = T_ERROR;
      return i;
    }
    case ' ':
    case '\t':
    case '\f':
    case '\r': {
      for(i=1; (c = z[i])==' ' || c=='\t' || c=='\r' || c=='\f'; i++){}
      pToken->eType = T_WHITESPACE;
      return i;
    }
    case '#': {
      for(i=1; (c = z[i])!=0 && c!='\n'; i++){}
      pToken->eType = T_WHITESPACE;
      /* If the comment is "#breakpoint" then invoke the pik_breakpoint()
      ** routine.  The pik_breakpoint() routie is a no-op that serves as
      ** a convenient place to set a gdb breakpoint when debugging. */
      if( strncmp((const char*)z,"#breakpoint",11)==0 ) pik_breakpoint(z);
      return i;
    }
    case '/': {
      if( z[1]=='*' ){
        for(i=2; z[i]!=0 && (z[i]!='*' || z[i+1]!='/'); i++){}
        if( z[i]=='*' ){
          pToken->eType = T_WHITESPACE;
          return i+2;
        }else{
          pToken->eType = T_ERROR;
          return i;
        }
      }else if( z[1]=='/' ){
        for(i=2; z[i]!=0 && z[i]!='\n'; i++){}
        pToken->eType = T_WHITESPACE;
        return i;
      }else if( z[1]=='=' ){
        pToken->eType = T_ASSIGN;
        pToken->eCode = T_SLASH;
        return 2;
      }else{
        pToken->eType = T_SLASH;
        return 1;
      }
    }
    case '+': {
      if( z[1]=='=' ){
        pToken->eType = T_ASSIGN;
        pToken->eCode = T_PLUS;
        return 2;
      }
      pToken->eType = T_PLUS;
      return 1;
    }
    case '*': {
      if( z[1]=='=' ){
        pToken->eType = T_ASSIGN;
        pToken->eCode = T_STAR;
        return 2;
      }
      pToken->eType = T_STAR;
      return 1;
    }
    case '%': {   pToken->eType = T_PERCENT; return 1; }
    case '(': {   pToken->eType = T_LP;      return 1; }
    case ')': {   pToken->eType = T_RP;      return 1; }
    case '[': {   pToken->eType = T_LB;      return 1; }
    case ']': {   pToken->eType = T_RB;      return 1; }
    case ',': {   pToken->eType = T_COMMA;   return 1; }
    case ':': {   pToken->eType = T_COLON;   return 1; }
    case '>': {   pToken->eType = T_GT;      return 1; }
    case '=': {
       if( z[1]=='=' ){
         pToken->eType = T_EQ;
         return 2;
       }
       pToken->eType = T_ASSIGN;
       pToken->eCode = T_ASSIGN;
       return 1;
    }
    case '-': {
      if( z[1]=='>' ){
        pToken->eType = T_RARROW;
        return 2;
      }else if( z[1]=='=' ){
        pToken->eType = T_ASSIGN;
        pToken->eCode = T_MINUS;
        return 2;
      }else{
        pToken->eType = T_MINUS;
        return 1;
      }
    }
    case '<': { 
      if( z[1]=='-' ){
         if( z[2]=='>' ){
           pToken->eType = T_LRARROW;
           return 3;
         }else{
           pToken->eType = T_LARROW;
           return 2;
         }
      }else{
        pToken->eType = T_LT;
        return 1;
      }
    }
    case 0xe2: {
      if( z[1]==0x86 ){
        if( z[2]==0x90 ){
          pToken->eType = T_LARROW;   /* <- */
          return 3;
        }
        if( z[2]==0x92 ){
          pToken->eType = T_RARROW;   /* -> */
          return 3;
        }
        if( z[2]==0x94 ){
          pToken->eType = T_LRARROW;  /* <-> */
          return 3;
        }
      }
      pToken->eType = T_ERROR;
      return 1;
    }
    case '{': {
      int len, depth;
      i = 1;
      if( bAllowCodeBlock ){
        depth = 1;
        while( z[i] && depth>0 ){
          PToken x;
          x.z = (char*)(z+i);
          len = pik_token_length(&x, 0);
          if( len==1 ){
            if( z[i]=='{' ) depth++;
            if( z[i]=='}' ) depth--;
          }
          i += len;
        }
      }else{
        depth = 0;
      }
      if( depth ){
        pToken->eType = T_ERROR;
        return 1;
      }
      pToken->eType = T_CODEBLOCK;
      return i;
    }
    case '&': {
      static const struct {
         int nByte;            /* Number of bytes in zEntity */
         int eCode;            /* Corresponding token code */
         const char *zEntity;  /* Name of the HTML entity */
      } aEntity[] = {
                      /*   123456789 1234567 */
         { 6,  T_RARROW,  "&rarr;"           },   /* Same as -> */
         { 12, T_RARROW,  "&rightarrow;"     },   /* Same as -> */
         { 6,  T_LARROW,  "&larr;"           },   /* Same as <- */
         { 11, T_LARROW,  "&leftarrow;"      },   /* Same as <- */
         { 16, T_LRARROW, "&leftrightarrow;" },   /* Same as <-> */
      };
      unsigned int i;
      for(i=0; i<sizeof(aEntity)/sizeof(aEntity[0]); i++){
        if( strncmp((const char*)z,aEntity[i].zEntity,aEntity[i].nByte)==0 ){
          pToken->eType = aEntity[i].eCode;
          return aEntity[i].nByte;
        }
      }
      pToken->eType = T_ERROR;
      return 1;
    }
    default: {
      c = z[0];
      if( c=='.' ){
        unsigned char c1 = z[1];
        if( islower(c1) ){
          const PikWord *pFound;
          for(i=2; (c = z[i])>='a' && c<='z'; i++){}
          pFound = pik_find_word((const char*)z+1, i-1,
                                    pik_keywords, count(pik_keywords));
          if( pFound && (pFound->eEdge>0 ||
                         pFound->eType==T_EDGEPT ||
                         pFound->eType==T_START ||
                         pFound->eType==T_END )
          ){
            /* Dot followed by something that is a 2-D place value */
            pToken->eType = T_DOT_E;
          }else if( pFound && (pFound->eType==T_X || pFound->eType==T_Y) ){
            /* Dot followed by "x" or "y" */
            pToken->eType = T_DOT_XY;
          }else{
            /* Any other "dot" */
            pToken->eType = T_DOT_L;
          }
          return 1;
        }else if( isdigit(c1) ){
          i = 0;
          /* no-op.  Fall through to number handling */
        }else if( isupper(c1) ){
          for(i=2; (c = z[i])!=0 && (isalnum(c) || c=='_'); i++){}
          pToken->eType = T_DOT_U;
          return 1;
        }else{
          pToken->eType = T_ERROR;
          return 1;
        }
      }
      if( (c>='0' && c<='9') || c=='.' ){
        int nDigit;
        int isInt = 1;
        if( c!='.' ){
          nDigit = 1;
          for(i=1; (c = z[i])>='0' && c<='9'; i++){ nDigit++; }
          if( i==1 && (c=='x' || c=='X') ){
            for(i=2; (c = z[i])!=0 && isxdigit(c); i++){}
            pToken->eType = T_NUMBER;
            return i;
          }
        }else{
          isInt = 0;
          nDigit = 0;
          i = 0;
        }
        if( c=='.' ){
          isInt = 0;
          for(i++; (c = z[i])>='0' && c<='9'; i++){ nDigit++; }
        }
        if( nDigit==0 ){
          pToken->eType = T_ERROR;
          return i;
        }
        if( c=='e' || c=='E' ){
          int iBefore = i;
          i++;
          c2 = z[i];
          if( c2=='+' || c2=='-' ){
            i++;
            c2 = z[i];
          }
          if( c2<'0' || c>'9' ){
            /* This is not an exp */
            i = iBefore;
          }else{
            i++;
            isInt = 0;
            while( (c = z[i])>='0' && c<='9' ){ i++; }
          }
        }
        c2 = c ? z[i+1] : 0;
        if( isInt ){
          if( (c=='t' && c2=='h')
           || (c=='r' && c2=='d')
           || (c=='n' && c2=='d')
           || (c=='s' && c2=='t')
          ){
            pToken->eType = T_NTH;
            return i+2;
          }
        }
        if( (c=='i' && c2=='n')
         || (c=='c' && c2=='m')
         || (c=='m' && c2=='m')
         || (c=='p' && c2=='t')
         || (c=='p' && c2=='x')
         || (c=='p' && c2=='c')
        ){
          i += 2;
        }
        pToken->eType = T_NUMBER;
        return i;
      }else if( islower(c) ){
        const PikWord *pFound;
        for(i=1; (c =  z[i])!=0 && (isalnum(c) || c=='_'); i++){}
        pFound = pik_find_word((const char*)z, i,
                               pik_keywords, count(pik_keywords));
        if( pFound ){
          pToken->eType = pFound->eType;
          pToken->eCode = pFound->eCode;
          pToken->eEdge = pFound->eEdge;
          return i;
        }
        pToken->n = i;
        if( pik_find_class(pToken)!=0 ){
          pToken->eType = T_CLASSNAME;
        }else{
          pToken->eType = T_ID;
        }
        return i;
      }else if( c>='A' && c<='Z' ){
        for(i=1; (c =  z[i])!=0 && (isalnum(c) || c=='_'); i++){}
        pToken->eType = T_PLACENAME;
        return i;
      }else if( c=='$' && z[1]>='1' && z[1]<='9' && !isdigit(z[2]) ){
        pToken->eType = T_PARAMETER;
        pToken->eCode = z[1] - '1';
        return 2;
      }else if( c=='_' || c=='$' || c=='@' ){
        for(i=1; (c =  z[i])!=0 && (isalnum(c) || c=='_'); i++){}
        pToken->eType = T_ID;
        return i;
      }else{
        pToken->eType = T_ERROR;
        return 1;
      }
    }
  }
}

/*
** Return a pointer to the next non-whitespace token after pThis.
** This is used to help form error messages.
*/
static PToken pik_next_semantic_token(PToken *pThis){
  PToken x;
  int sz;
  int i = pThis->n;
  memset(&x, 0, sizeof(x));
  x.z = pThis->z;
  while(1){
    x.z = pThis->z + i;
    sz = pik_token_length(&x, 1);
    if( x.eType!=T_WHITESPACE ){
      x.n = sz;
      return x;
    }
    i += sz;
  }
}

/* Parser arguments to a macro invocation
**
**     (arg1, arg2, ...)
**
** Arguments are comma-separated, except that commas within string
** literals or with (...), {...}, or [...] do not count.  The argument
** list begins and ends with parentheses.  There can be at most 9
** arguments.
**
** Return the number of bytes in the argument list.
*/
static unsigned int pik_parse_macro_args(
  Pik *p,
  const char *z,     /* Start of the argument list */
  int n,             /* Available bytes */
  PToken *args,      /* Fill in with the arguments */
  PToken *pOuter     /* Arguments of the next outer context, or NULL */
){
  int nArg = 0;
  int i, j, sz;
  int iStart;
  int depth = 0;
  PToken x;
  if( z[0]!='(' ) return 0;
  args[0].z = z+1;
  iStart = 1;
  for(i=1; i<n && z[i]!=')'; i+=sz){
    x.z = z+i;
    sz = pik_token_length(&x, 0);
    if( sz!=1 ) continue;
    if( z[i]==',' && depth<=0 ){
      args[nArg].n = i - iStart;
      if( nArg==8 ){
        x.z = z;
        x.n = 1;
        pik_error(p, &x, "too many macro arguments - max 9");
        return 0;
      }
      nArg++;
      args[nArg].z = z+i+1;
      iStart = i+1;
      depth = 0;
    }else if( z[i]=='(' || z[i]=='{' || z[i]=='[' ){
      depth++;
    }else if( z[i]==')' || z[i]=='}' || z[i]==']' ){
      depth--;
    }
  }
  if( z[i]==')' ){
    args[nArg].n = i - iStart;
    /* Remove leading and trailing whitespace from each argument.
    ** If what remains is one of $1, $2, ... $9 then transfer the
    ** corresponding argument from the outer context */
    for(j=0; j<=nArg; j++){
      PToken *t = &args[j];
      while( t->n>0 && isspace(t->z[0]) ){ t->n--; t->z++; }
      while( t->n>0 && isspace(t->z[t->n-1]) ){ t->n--; }
      if( t->n==2 && t->z[0]=='$' && t->z[1]>='1' && t->z[1]<='9' ){
        if( pOuter ) *t = pOuter[t->z[1]-'1'];
        else t->n = 0;
      }
    }
    return i+1;
  }
  x.z = z;
  x.n = 1;
  pik_error(p, &x, "unterminated macro argument list");
  return 0;
}

/*
** Split up the content of a PToken into multiple tokens and
** send each to the parser.
*/
void pik_tokenize(Pik *p, PToken *pIn, yyParser *pParser, PToken *aParam){
  unsigned int i;
  int sz = 0;
  PToken token;
  PMacro *pMac;
  for(i=0; i<pIn->n && pIn->z[i] && p->nErr==0; i+=sz){
    token.eCode = 0;
    token.eEdge = 0;
    token.z = pIn->z + i;
    sz = pik_token_length(&token, 1);
    if( token.eType==T_WHITESPACE ){
      /* no-op */
    }else if( sz>50000 ){
      token.n = 1;
      pik_error(p, &token, "token is too long - max length 50000 bytes");
      break;
    }else if( token.eType==T_ERROR ){
      token.n = (unsigned short)(sz & 0xffff);
      pik_error(p, &token, "unrecognized token");
      break;
    }else if( sz+i>pIn->n ){
      token.n = pIn->n - i;
      pik_error(p, &token, "syntax error");
      break;
    }else if( token.eType==T_PARAMETER ){
      /* Substitute a parameter into the input stream */
      if( aParam==0 || aParam[token.eCode].n==0 ){
        continue;
      }
      token.n = (unsigned short)(sz & 0xffff);
      if( p->nCtx>=count(p->aCtx) ){
        pik_error(p, &token, "macros nested too deep");
      }else{
        p->aCtx[p->nCtx++] = token;
        pik_tokenize(p, &aParam[token.eCode], pParser, 0);
        p->nCtx--;
      }
    }else if( token.eType==T_ID
               && (token.n = (unsigned short)(sz & 0xffff), 
                   (pMac = pik_find_macro(p,&token))!=0)
    ){
      PToken args[9];
      unsigned int j = i+sz;
      if( pMac->inUse ){
        pik_error(p, &pMac->macroName, "recursive macro definition");
        break;
      }
      token.n = (short int)(sz & 0xffff);
      if( p->nCtx>=count(p->aCtx) ){
        pik_error(p, &token, "macros nested too deep");
        break;
      } 
      pMac->inUse = 1;
      memset(args, 0, sizeof(args));
      p->aCtx[p->nCtx++] = token;
      sz += pik_parse_macro_args(p, pIn->z+j, pIn->n-j, args, aParam);
      pik_tokenize(p, &pMac->macroBody, pParser, args);
      p->nCtx--;
      pMac->inUse = 0;
    }else{
#if 0
      printf("******** Token %s (%d): \"%.*s\" **************\n",
             yyTokenName[token.eType], token.eType,
             (int)(isspace(token.z[0]) ? 0 : sz), token.z);
#endif
      token.n = (unsigned short)(sz & 0xffff);
      if( p->nToken++ > PIKCHR_TOKEN_LIMIT ){
        pik_error(p, &token, "script is too complex");
        break;
      }
      pik_parser(pParser, token.eType, token);
    }
  }
}

/*
** Parse the PIKCHR script contained in zText[].  Return a rendering.  Or
** if an error is encountered, return the error text.  The error message
** is HTML formatted.  So regardless of what happens, the return text
** is safe to be insertd into an HTML output stream.
**
** If pnWidth and pnHeight are not NULL, then this routine writes the
** width and height of the <SVG> object into the integers that they
** point to.  A value of -1 is written if an error is seen.
**
** If zClass is not NULL, then it is a class name to be included in
** the <SVG> markup.
**
** The returned string is contained in memory obtained from malloc()
** and should be released by the caller.
*/
char *pikchr(
  const char *zText,     /* Input PIKCHR source text.  zero-terminated */
  const char *zClass,    /* Add class="%s" to <svg> markup */
  unsigned int mFlags,   /* Flags used to influence rendering behavior */
  int *pnWidth,          /* Write width of <svg> here, if not NULL */
  int *pnHeight          /* Write height here, if not NULL */
){
  Pik s;
  yyParser sParse;

  memset(&s, 0, sizeof(s));
  s.sIn.z = zText;
  s.sIn.n = (unsigned int)strlen(zText);
  s.eDir = DIR_RIGHT;
  s.zClass = zClass;
  s.mFlags = mFlags;
  pik_parserInit(&sParse, &s);
#if 0
  pik_parserTrace(stdout, "parser: ");
#endif
  pik_tokenize(&s, &s.sIn, &sParse, 0);
  if( s.nErr==0 ){
    PToken token;
    memset(&token,0,sizeof(token));
    token.z = zText + (s.sIn.n>0 ? s.sIn.n-1 : 0);
    token.n = 1;
    pik_parser(&sParse, 0, token);
  }
  pik_parserFinalize(&sParse);
  if( s.zOut==0 && s.nErr==0 ){
    pik_append(&s, "<!-- empty pikchr diagram -->\n", -1);
  }
  while( s.pVar ){
    PVar *pNext = s.pVar->pNext;
    free(s.pVar);
    s.pVar = pNext;
  }
  while( s.pMacros ){
    PMacro *pNext = s.pMacros->pNext;
    free(s.pMacros);
    s.pMacros = pNext;
  }
  if( pnWidth ) *pnWidth = s.nErr ? -1 : s.wSVG;
  if( pnHeight ) *pnHeight = s.nErr ? -1 : s.hSVG;
  if( s.zOut ){
    s.zOut[s.nOut] = 0;
    s.zOut = realloc(s.zOut, s.nOut+1);
  }
  return s.zOut;
}

#if defined(PIKCHR_FUZZ)
#include <stdint.h>
int LLVMFuzzerTestOneInput(const uint8_t *aData, size_t nByte){
  int w,h;
  char *zIn, *zOut;
  unsigned int mFlags = nByte & 3;
  zIn = malloc( nByte + 1 );
  if( zIn==0 ) return 0;
  memcpy(zIn, aData, nByte);
  zIn[nByte] = 0;
  zOut = pikchr(zIn, "pikchr", mFlags, &w, &h);
  free(zIn);
  free(zOut);
  return 0;
}
#endif /* PIKCHR_FUZZ */

#if defined(PIKCHR_SHELL)
/* Print a usage comment for the shell and exit. */
static void usage(const char *argv0){
  fprintf(stderr, "usage: %s [OPTIONS] FILE ...\n", argv0);
  fprintf(stderr,
    "Convert Pikchr input files into SVG.  Filename \"-\" means stdin.\n"
    "All output goes to stdout.\n"
    "Options:\n"
    "   --dark-mode      Generate \"dark mode\" output\n"
    "   --dont-stop      Process all files even if earlier files have errors\n"
    "   --svg-only       Emit raw SVG without the HTML wrapper\n"
  );
  exit(1);
}

/* Send text to standard output, but escape HTML markup */
static void print_escape_html(const char *z){
  int j;
  char c;
  while( z[0]!=0 ){
    for(j=0; (c = z[j])!=0 && c!='<' && c!='>' && c!='&'; j++){}
    if( j ) printf("%.*s", j, z);
    z += j+1;
    j = -1;
    if( c=='<' ){
      printf("&lt;");
    }else if( c=='>' ){
      printf("&gt;");
    }else if( c=='&' ){
      printf("&amp;");
    }else if( c==0 ){
      break;
    }
  }
}

/* Read the content of file zFilename into memory obtained from malloc()
** Return the memory.  If something goes wrong (ex: the file does not exist
** or cannot be opened) put an error message on stderr and return NULL.
**
** If the filename is "-" read stdin.
*/
static char *readFile(const char *zFilename){
  FILE *in;
  size_t n;
  size_t nUsed = 0;
  size_t nAlloc = 0;
  char *z = 0, *zNew = 0;
  in = strcmp(zFilename,"-")==0 ? stdin : fopen(zFilename, "rb");
  if( in==0 ){
    fprintf(stderr, "cannot open \"%s\" for reading\n", zFilename);
    return 0;
  }
  while(1){
    if( nUsed+2>=nAlloc ){
      nAlloc = nAlloc*2 + 4000;
      zNew = realloc(z, nAlloc);
    }
    if( zNew==0 ){
      free(z);
      fprintf(stderr, "out of memory trying to allocate %lld bytes\n",
              (long long int)nAlloc);
      exit(1);
    }
    z = zNew;
    n = fread(z+nUsed, 1, nAlloc-nUsed-1, in);
    if( n<=0 ){
      break;
    }
    nUsed += n;
  }
  if( in!=stdin ) fclose(in);
  z[nUsed] = 0;
  return z;
}


/* Testing interface
**
** Generate HTML on standard output that displays both the original
** input text and the rendered SVG for all files named on the command
** line.
*/
int main(int argc, char **argv){
  int i;
  int bSvgOnly = 0;            /* Output SVG only.  No HTML wrapper */
  int bDontStop = 0;           /* Continue in spite of errors */
  int exitCode = 0;            /* What to return */
  int mFlags = 0;              /* mFlags argument to pikchr() */
  const char *zStyle = "";     /* Extra styling */
  const char *zHtmlHdr = 
    "<!DOCTYPE html>\n"
    "<html lang=\"en-US\">\n"
    "<head>\n<title>PIKCHR Test</title>\n"
    "<style>\n"
    "  .hidden {\n"
    "     position: absolute !important;\n"
    "     opacity: 0 !important;\n"
    "     pointer-events: none !important;\n"
    "     display: none !important;\n"
    "  }\n"
    "</style>\n"
    "<script>\n"
    "  function toggleHidden(id){\n"
    "    for(var c of document.getElementById(id).children){\n"
    "      c.classList.toggle('hidden');\n"
    "    }\n"
    "  }\n"
    "</script>\n"
    "<meta charset=\"utf-8\">\n"
    "</head>\n"
    "<body>\n"
  ;
  if( argc<2 ) usage(argv[0]);
  for(i=1; i<argc; i++){
    char *zIn;
    char *zOut;
    int w, h;

    if( argv[i][0]=='-' && argv[i][1]!=0 ){
      char *z = argv[i];
      z++;
      if( z[0]=='-' ) z++;
      if( strcmp(z,"dont-stop")==0 ){
        bDontStop = 1;
      }else
      if( strcmp(z,"dark-mode")==0 ){
        zStyle = "color:white;background-color:black;";
        mFlags |= PIKCHR_DARK_MODE;
      }else
      if( strcmp(z,"svg-only")==0 ){
        if( zHtmlHdr==0 ){
          fprintf(stderr, "the \"%s\" option must come first\n",argv[i]);
          exit(1);
        }
        bSvgOnly = 1;
        mFlags |= PIKCHR_PLAINTEXT_ERRORS;
      }else
      {
        fprintf(stderr,"unknown option: \"%s\"\n", argv[i]);
        usage(argv[0]);
      }
      continue;
    }
    zIn = readFile(argv[i]);
    if( zIn==0 ) continue;
    zOut = pikchr(zIn, "pikchr", mFlags, &w, &h);
    if( w<0 && !bDontStop ) exitCode = 1;
    if( zOut==0 ){
      fprintf(stderr, "pikchr() returns NULL.  Out of memory?\n");
      if( !bDontStop ) exit(1);
    }else if( bSvgOnly ){
      printf("%s\n", zOut);
    }else{
      if( zHtmlHdr ){
        printf("%s", zHtmlHdr);
        zHtmlHdr = 0;
      }
      printf("<h1>File %s</h1>\n", argv[i]);
      if( w<0 ){
        printf("<p>ERROR</p>\n%s\n", zOut);
      }else{
        printf("<div id=\"svg-%d\" onclick=\"toggleHidden('svg-%d')\">\n",i,i);
        printf("<div style='border:3px solid lightgray;max-width:%dpx;%s'>\n",
               w,zStyle);
        printf("%s</div>\n", zOut);
        printf("<pre class='hidden'>");
        print_escape_html(zIn);
        printf("</pre>\n</div>\n");
      }
    }
    free(zOut);
    free(zIn);
  }
  if( !bSvgOnly ){
    printf("</body></html>\n");
  }
  return exitCode ? EXIT_FAILURE : EXIT_SUCCESS; 
}
#endif /* PIKCHR_SHELL */

#ifdef PIKCHR_TCL
#include <tcl.h>
/*
** An interface to TCL
**
** TCL command:     pikchr $INPUTTEXT
**
** Returns a list of 3 elements which are the output text, the width, and
** the height.
**
** Register the "pikchr" command by invoking Pikchr_Init(Tcl_Interp*).  Or
** compile this source file as a shared library and load it using the
** "load" command of Tcl.
**
** Compile this source-code file into a shared library using a command
** similar to this:
**
**    gcc -c pikchr.so -DPIKCHR_TCL -shared pikchr.c
*/
static int pik_tcl_command(
  ClientData clientData, /* Not Used */
  Tcl_Interp *interp,    /* The TCL interpreter that invoked this command */
  int objc,              /* Number of arguments */
  Tcl_Obj *CONST objv[]  /* Command arguments */
){
  int w, h;              /* Width and height of the pikchr */
  const char *zIn;       /* Source text input */
  char *zOut;            /* SVG output text */
  Tcl_Obj *pRes;         /* The result TCL object */

  (void)clientData;
  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "PIKCHR_SOURCE_TEXT");
    return TCL_ERROR;
  }
  zIn = Tcl_GetString(objv[1]);
  w = h = 0;
  zOut = pikchr(zIn, "pikchr", 0, &w, &h);
  if( zOut==0 ){
    return TCL_ERROR;  /* Out of memory */
  }
  pRes = Tcl_NewObj();
  Tcl_ListObjAppendElement(0, pRes, Tcl_NewStringObj(zOut, -1));
  free(zOut);
  Tcl_ListObjAppendElement(0, pRes, Tcl_NewIntObj(w));
  Tcl_ListObjAppendElement(0, pRes, Tcl_NewIntObj(h));
  Tcl_SetObjResult(interp, pRes);
  return TCL_OK;
}

#ifndef PACKAGE_NAME
# define PACKAGE_NAME "pikchr"
#endif
#ifndef PACKAGE_VERSION
# define PACKAGE_VERSION "1.0"
#endif

/* Invoke this routine to register the "pikchr" command with the interpreter
** given in the argument */
int Pikchr_Init(Tcl_Interp *interp){
  Tcl_CreateObjCommand(interp, "pikchr", pik_tcl_command, 0, 0);
  Tcl_PkgProvide(interp, PACKAGE_NAME, PACKAGE_VERSION);
  return TCL_OK;
}


#endif /* PIKCHR_TCL */


#line 8272 "pikchr.c"
Added extsrc/pikchr.js.









































































































































































































































































































































































































































































































































































































































































































































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var initPikchrModule = (() => {
  var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
  
  return (
function(config) {
  var initPikchrModule = config || {};

var Module = typeof initPikchrModule != "undefined" ? initPikchrModule : {};

var readyPromiseResolve, readyPromiseReject;

Module["ready"] = new Promise(function(resolve, reject) {
 readyPromiseResolve = resolve;
 readyPromiseReject = reject;
});

var moduleOverrides = Object.assign({}, Module);

var arguments_ = [];

var thisProgram = "./this.program";

var quit_ = (status, toThrow) => {
 throw toThrow;
};

var ENVIRONMENT_IS_WEB = true;

var ENVIRONMENT_IS_WORKER = false;

var scriptDirectory = "";

function locateFile(path) {
 if (Module["locateFile"]) {
  return Module["locateFile"](path, scriptDirectory);
 }
 return scriptDirectory + path;
}

var read_, readAsync, readBinary, setWindowTitle;

if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
 if (ENVIRONMENT_IS_WORKER) {
  scriptDirectory = self.location.href;
 } else if (typeof document != "undefined" && document.currentScript) {
  scriptDirectory = document.currentScript.src;
 }
 if (_scriptDir) {
  scriptDirectory = _scriptDir;
 }
 if (scriptDirectory.indexOf("blob:") !== 0) {
  scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf("/") + 1);
 } else {
  scriptDirectory = "";
 }
 {
  read_ = url => {
   var xhr = new XMLHttpRequest();
   xhr.open("GET", url, false);
   xhr.send(null);
   return xhr.responseText;
  };
  if (ENVIRONMENT_IS_WORKER) {
   readBinary = url => {
    var xhr = new XMLHttpRequest();
    xhr.open("GET", url, false);
    xhr.responseType = "arraybuffer";
    xhr.send(null);
    return new Uint8Array(xhr.response);
   };
  }
  readAsync = (url, onload, onerror) => {
   var xhr = new XMLHttpRequest();
   xhr.open("GET", url, true);
   xhr.responseType = "arraybuffer";
   xhr.onload = () => {
    if (xhr.status == 200 || xhr.status == 0 && xhr.response) {
     onload(xhr.response);
     return;
    }
    onerror();
   };
   xhr.onerror = onerror;
   xhr.send(null);
  };
 }
 setWindowTitle = title => document.title = title;
} else {}

var out = Module["print"] || console.log.bind(console);

var err = Module["printErr"] || console.warn.bind(console);

Object.assign(Module, moduleOverrides);

moduleOverrides = null;

if (Module["arguments"]) arguments_ = Module["arguments"];

if (Module["thisProgram"]) thisProgram = Module["thisProgram"];

if (Module["quit"]) quit_ = Module["quit"];

var wasmBinary;

if (Module["wasmBinary"]) wasmBinary = Module["wasmBinary"];

var noExitRuntime = Module["noExitRuntime"] || true;

if (typeof WebAssembly != "object") {
 abort("no native wasm support detected");
}

var wasmMemory;

var ABORT = false;

var EXITSTATUS;

var UTF8Decoder = typeof TextDecoder != "undefined" ? new TextDecoder("utf8") : undefined;

function UTF8ArrayToString(heapOrArray, idx, maxBytesToRead) {
 var endIdx = idx + maxBytesToRead;
 var endPtr = idx;
 while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
 if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
  return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
 }
 var str = "";
 while (idx < endPtr) {
  var u0 = heapOrArray[idx++];
  if (!(u0 & 128)) {
   str += String.fromCharCode(u0);
   continue;
  }
  var u1 = heapOrArray[idx++] & 63;
  if ((u0 & 224) == 192) {
   str += String.fromCharCode((u0 & 31) << 6 | u1);
   continue;
  }
  var u2 = heapOrArray[idx++] & 63;
  if ((u0 & 240) == 224) {
   u0 = (u0 & 15) << 12 | u1 << 6 | u2;
  } else {
   u0 = (u0 & 7) << 18 | u1 << 12 | u2 << 6 | heapOrArray[idx++] & 63;
  }
  if (u0 < 65536) {
   str += String.fromCharCode(u0);
  } else {
   var ch = u0 - 65536;
   str += String.fromCharCode(55296 | ch >> 10, 56320 | ch & 1023);
  }
 }
 return str;
}

function UTF8ToString(ptr, maxBytesToRead) {
 return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : "";
}

function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
 if (!(maxBytesToWrite > 0)) return 0;
 var startIdx = outIdx;
 var endIdx = outIdx + maxBytesToWrite - 1;
 for (var i = 0; i < str.length; ++i) {
  var u = str.charCodeAt(i);
  if (u >= 55296 && u <= 57343) {
   var u1 = str.charCodeAt(++i);
   u = 65536 + ((u & 1023) << 10) | u1 & 1023;
  }
  if (u <= 127) {
   if (outIdx >= endIdx) break;
   heap[outIdx++] = u;
  } else if (u <= 2047) {
   if (outIdx + 1 >= endIdx) break;
   heap[outIdx++] = 192 | u >> 6;
   heap[outIdx++] = 128 | u & 63;
  } else if (u <= 65535) {
   if (outIdx + 2 >= endIdx) break;
   heap[outIdx++] = 224 | u >> 12;
   heap[outIdx++] = 128 | u >> 6 & 63;
   heap[outIdx++] = 128 | u & 63;
  } else {
   if (outIdx + 3 >= endIdx) break;
   heap[outIdx++] = 240 | u >> 18;
   heap[outIdx++] = 128 | u >> 12 & 63;
   heap[outIdx++] = 128 | u >> 6 & 63;
   heap[outIdx++] = 128 | u & 63;
  }
 }
 heap[outIdx] = 0;
 return outIdx - startIdx;
}

function stringToUTF8(str, outPtr, maxBytesToWrite) {
 return stringToUTF8Array(str, HEAPU8, outPtr, maxBytesToWrite);
}

var HEAP8, HEAPU8, HEAP16, HEAPU16, HEAP32, HEAPU32, HEAPF32, HEAPF64;

function updateMemoryViews() {
 var b = wasmMemory.buffer;
 Module["HEAP8"] = HEAP8 = new Int8Array(b);
 Module["HEAP16"] = HEAP16 = new Int16Array(b);
 Module["HEAP32"] = HEAP32 = new Int32Array(b);
 Module["HEAPU8"] = HEAPU8 = new Uint8Array(b);
 Module["HEAPU16"] = HEAPU16 = new Uint16Array(b);
 Module["HEAPU32"] = HEAPU32 = new Uint32Array(b);
 Module["HEAPF32"] = HEAPF32 = new Float32Array(b);
 Module["HEAPF64"] = HEAPF64 = new Float64Array(b);
}

var INITIAL_MEMORY = Module["INITIAL_MEMORY"] || 16777216;

var wasmTable;

var __ATPRERUN__ = [];

var __ATINIT__ = [];

var __ATPOSTRUN__ = [];

var runtimeInitialized = false;

function keepRuntimeAlive() {
 return noExitRuntime;
}

function preRun() {
 if (Module["preRun"]) {
  if (typeof Module["preRun"] == "function") Module["preRun"] = [ Module["preRun"] ];
  while (Module["preRun"].length) {
   addOnPreRun(Module["preRun"].shift());
  }
 }
 callRuntimeCallbacks(__ATPRERUN__);
}

function initRuntime() {
 runtimeInitialized = true;
 callRuntimeCallbacks(__ATINIT__);
}

function postRun() {
 if (Module["postRun"]) {
  if (typeof Module["postRun"] == "function") Module["postRun"] = [ Module["postRun"] ];
  while (Module["postRun"].length) {
   addOnPostRun(Module["postRun"].shift());
  }
 }
 callRuntimeCallbacks(__ATPOSTRUN__);
}

function addOnPreRun(cb) {
 __ATPRERUN__.unshift(cb);
}

function addOnInit(cb) {
 __ATINIT__.unshift(cb);
}

function addOnPostRun(cb) {
 __ATPOSTRUN__.unshift(cb);
}

var runDependencies = 0;

var runDependencyWatcher = null;

var dependenciesFulfilled = null;

function addRunDependency(id) {
 runDependencies++;
 if (Module["monitorRunDependencies"]) {
  Module["monitorRunDependencies"](runDependencies);
 }
}

function removeRunDependency(id) {
 runDependencies--;
 if (Module["monitorRunDependencies"]) {
  Module["monitorRunDependencies"](runDependencies);
 }
 if (runDependencies == 0) {
  if (runDependencyWatcher !== null) {
   clearInterval(runDependencyWatcher);
   runDependencyWatcher = null;
  }
  if (dependenciesFulfilled) {
   var callback = dependenciesFulfilled;
   dependenciesFulfilled = null;
   callback();
  }
 }
}

function abort(what) {
 if (Module["onAbort"]) {
  Module["onAbort"](what);
 }
 what = "Aborted(" + what + ")";
 err(what);
 ABORT = true;
 EXITSTATUS = 1;
 what += ". Build with -sASSERTIONS for more info.";
 var e = new WebAssembly.RuntimeError(what);
 readyPromiseReject(e);
 throw e;
}

var dataURIPrefix = "data:application/octet-stream;base64,";

function isDataURI(filename) {
 return filename.startsWith(dataURIPrefix);
}

var wasmBinaryFile;

wasmBinaryFile = "pikchr.wasm";

if (!isDataURI(wasmBinaryFile)) {
 wasmBinaryFile = locateFile(wasmBinaryFile);
}

function getBinary(file) {
 try {
  if (file == wasmBinaryFile && wasmBinary) {
   return new Uint8Array(wasmBinary);
  }
  if (readBinary) {
   return readBinary(file);
  }
  throw "both async and sync fetching of the wasm failed";
 } catch (err) {
  abort(err);
 }
}

function getBinaryPromise() {
 if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
  if (typeof fetch == "function") {
   return fetch(wasmBinaryFile, {
    credentials: "same-origin"
   }).then(function(response) {
    if (!response["ok"]) {
     throw "failed to load wasm binary file at '" + wasmBinaryFile + "'";
    }
    return response["arrayBuffer"]();
   }).catch(function() {
    return getBinary(wasmBinaryFile);
   });
  }
 }
 return Promise.resolve().then(function() {
  return getBinary(wasmBinaryFile);
 });
}

function createWasm() {
 var info = {
  "a": asmLibraryArg
 };
 function receiveInstance(instance, module) {
  var exports = instance.exports;
  Module["asm"] = exports;
  wasmMemory = Module["asm"]["d"];
  updateMemoryViews();
  wasmTable = Module["asm"]["g"];
  addOnInit(Module["asm"]["e"]);
  removeRunDependency("wasm-instantiate");
 }
 addRunDependency("wasm-instantiate");
 function receiveInstantiationResult(result) {
  receiveInstance(result["instance"]);
 }
 function instantiateArrayBuffer(receiver) {
  return getBinaryPromise().then(function(binary) {
   return WebAssembly.instantiate(binary, info);
  }).then(function(instance) {
   return instance;
  }).then(receiver, function(reason) {
   err("failed to asynchronously prepare wasm: " + reason);
   abort(reason);
  });
 }
 function instantiateAsync() {
  if (!wasmBinary && typeof WebAssembly.instantiateStreaming == "function" && !isDataURI(wasmBinaryFile) && typeof fetch == "function") {
   return fetch(wasmBinaryFile, {
    credentials: "same-origin"
   }).then(function(response) {
    var result = WebAssembly.instantiateStreaming(response, info);
    return result.then(receiveInstantiationResult, function(reason) {
     err("wasm streaming compile failed: " + reason);
     err("falling back to ArrayBuffer instantiation");
     return instantiateArrayBuffer(receiveInstantiationResult);
    });
   });
  } else {
   return instantiateArrayBuffer(receiveInstantiationResult);
  }
 }
 if (Module["instantiateWasm"]) {
  try {
   var exports = Module["instantiateWasm"](info, receiveInstance);
   return exports;
  } catch (e) {
   err("Module.instantiateWasm callback failed with error: " + e);
   readyPromiseReject(e);
  }
 }
 instantiateAsync().catch(readyPromiseReject);
 return {};
}

var tempDouble;

var tempI64;

function ExitStatus(status) {
 this.name = "ExitStatus";
 this.message = "Program terminated with exit(" + status + ")";
 this.status = status;
}

function callRuntimeCallbacks(callbacks) {
 while (callbacks.length > 0) {
  callbacks.shift()(Module);
 }
}

function getValue(ptr, type = "i8") {
 if (type.endsWith("*")) type = "*";
 switch (type) {
 case "i1":
  return HEAP8[ptr >> 0];

 case "i8":
  return HEAP8[ptr >> 0];

 case "i16":
  return HEAP16[ptr >> 1];

 case "i32":
  return HEAP32[ptr >> 2];

 case "i64":
  return HEAP32[ptr >> 2];

 case "float":
  return HEAPF32[ptr >> 2];

 case "double":
  return HEAPF64[ptr >> 3];

 case "*":
  return HEAPU32[ptr >> 2];

 default:
  abort("invalid type for getValue: " + type);
 }
 return null;
}

function setValue(ptr, value, type = "i8") {
 if (type.endsWith("*")) type = "*";
 switch (type) {
 case "i1":
  HEAP8[ptr >> 0] = value;
  break;

 case "i8":
  HEAP8[ptr >> 0] = value;
  break;

 case "i16":
  HEAP16[ptr >> 1] = value;
  break;

 case "i32":
  HEAP32[ptr >> 2] = value;
  break;

 case "i64":
  tempI64 = [ value >>> 0, (tempDouble = value, +Math.abs(tempDouble) >= 1 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 0 : 0) ], 
  HEAP32[ptr >> 2] = tempI64[0], HEAP32[ptr + 4 >> 2] = tempI64[1];
  break;

 case "float":
  HEAPF32[ptr >> 2] = value;
  break;

 case "double":
  HEAPF64[ptr >> 3] = value;
  break;

 case "*":
  HEAPU32[ptr >> 2] = value;
  break;

 default:
  abort("invalid type for setValue: " + type);
 }
}

function ___assert_fail(condition, filename, line, func) {
 abort("Assertion failed: " + UTF8ToString(condition) + ", at: " + [ filename ? UTF8ToString(filename) : "unknown filename", line, func ? UTF8ToString(func) : "unknown function" ]);
}

function abortOnCannotGrowMemory(requestedSize) {
 abort("OOM");
}

function _emscripten_resize_heap(requestedSize) {
 var oldSize = HEAPU8.length;
 requestedSize = requestedSize >>> 0;
 abortOnCannotGrowMemory(requestedSize);
}

var SYSCALLS = {
 varargs: undefined,
 get: function() {
  SYSCALLS.varargs += 4;
  var ret = HEAP32[SYSCALLS.varargs - 4 >> 2];
  return ret;
 },
 getStr: function(ptr) {
  var ret = UTF8ToString(ptr);
  return ret;
 }
};

function _proc_exit(code) {
 EXITSTATUS = code;
 if (!keepRuntimeAlive()) {
  if (Module["onExit"]) Module["onExit"](code);
  ABORT = true;
 }
 quit_(code, new ExitStatus(code));
}

function exitJS(status, implicit) {
 EXITSTATUS = status;
 _proc_exit(status);
}

var _exit = exitJS;

function getCFunc(ident) {
 var func = Module["_" + ident];
 return func;
}

function writeArrayToMemory(array, buffer) {
 HEAP8.set(array, buffer);
}

function ccall(ident, returnType, argTypes, args, opts) {
 var toC = {
  "string": str => {
   var ret = 0;
   if (str !== null && str !== undefined && str !== 0) {
    var len = (str.length << 2) + 1;
    ret = stackAlloc(len);
    stringToUTF8(str, ret, len);
   }
   return ret;
  },
  "array": arr => {
   var ret = stackAlloc(arr.length);
   writeArrayToMemory(arr, ret);
   return ret;
  }
 };
 function convertReturnValue(ret) {
  if (returnType === "string") {
   return UTF8ToString(ret);
  }
  if (returnType === "boolean") return Boolean(ret);
  return ret;
 }
 var func = getCFunc(ident);
 var cArgs = [];
 var stack = 0;
 if (args) {
  for (var i = 0; i < args.length; i++) {
   var converter = toC[argTypes[i]];
   if (converter) {
    if (stack === 0) stack = stackSave();
    cArgs[i] = converter(args[i]);
   } else {
    cArgs[i] = args[i];
   }
  }
 }
 var ret = func.apply(null, cArgs);
 function onDone(ret) {
  if (stack !== 0) stackRestore(stack);
  return convertReturnValue(ret);
 }
 ret = onDone(ret);
 return ret;
}

function cwrap(ident, returnType, argTypes, opts) {
 argTypes = argTypes || [];
 var numericArgs = argTypes.every(type => type === "number" || type === "boolean");
 var numericRet = returnType !== "string";
 if (numericRet && numericArgs && !opts) {
  return getCFunc(ident);
 }
 return function() {
  return ccall(ident, returnType, argTypes, arguments, opts);
 };
}

var asmLibraryArg = {
 "a": ___assert_fail,
 "b": _emscripten_resize_heap,
 "c": _exit
};

var asm = createWasm();

var ___wasm_call_ctors = Module["___wasm_call_ctors"] = function() {
 return (___wasm_call_ctors = Module["___wasm_call_ctors"] = Module["asm"]["e"]).apply(null, arguments);
};

var _pikchr = Module["_pikchr"] = function() {
 return (_pikchr = Module["_pikchr"] = Module["asm"]["f"]).apply(null, arguments);
};

var stackSave = Module["stackSave"] = function() {
 return (stackSave = Module["stackSave"] = Module["asm"]["h"]).apply(null, arguments);
};

var stackRestore = Module["stackRestore"] = function() {
 return (stackRestore = Module["stackRestore"] = Module["asm"]["i"]).apply(null, arguments);
};

var stackAlloc = Module["stackAlloc"] = function() {
 return (stackAlloc = Module["stackAlloc"] = Module["asm"]["j"]).apply(null, arguments);
};

Module["stackSave"] = stackSave;

Module["stackRestore"] = stackRestore;

Module["cwrap"] = cwrap;

Module["setValue"] = setValue;

Module["getValue"] = getValue;

var calledRun;

dependenciesFulfilled = function runCaller() {
 if (!calledRun) run();
 if (!calledRun) dependenciesFulfilled = runCaller;
};

function run(args) {
 args = args || arguments_;
 if (runDependencies > 0) {
  return;
 }
 preRun();
 if (runDependencies > 0) {
  return;
 }
 function doRun() {
  if (calledRun) return;
  calledRun = true;
  Module["calledRun"] = true;
  if (ABORT) return;
  initRuntime();
  readyPromiseResolve(Module);
  if (Module["onRuntimeInitialized"]) Module["onRuntimeInitialized"]();
  postRun();
 }
 if (Module["setStatus"]) {
  Module["setStatus"]("Running...");
  setTimeout(function() {
   setTimeout(function() {
    Module["setStatus"]("");
   }, 1);
   doRun();
  }, 1);
 } else {
  doRun();
 }
}

if (Module["preInit"]) {
 if (typeof Module["preInit"] == "function") Module["preInit"] = [ Module["preInit"] ];
 while (Module["preInit"].length > 0) {
  Module["preInit"].pop()();
 }
}

run();


  return initPikchrModule.ready
}
);
})();
if (typeof exports === 'object' && typeof module === 'object')
  module.exports = initPikchrModule;
else if (typeof define === 'function' && define['amd'])
  define([], function() { return initPikchrModule; });
else if (typeof exports === 'object')
  exports["initPikchrModule"] = initPikchrModule;
Added extsrc/pikchr.wasm.

cannot compute difference between binary files

Added extsrc/shell.c.

more than 10,000 changes

Added extsrc/sqlite3.c.

more than 10,000 changes

Added extsrc/sqlite3.h.

more than 10,000 changes

Added fossil.1.











































































































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.TH FOSSIL "1" "Oct 2024" "https://fossil-scm.org" "User Commands"
.SH NAME
fossil \- Distributed Version Control System
.SH SYNOPSIS
.B fossil
\fIhelp\fR
.br
.B fossil
\fIhelp COMMAND\fR
.br
.B fossil
\fICOMMAND [OPTIONS]\fR
.SH DESCRIPTION
Fossil is a distributed version control system (DVCS) with built-in
forum, wiki, ticket tracker, CGI/HTTP interface, and HTTP server.

.SH Common COMMANDs:

add            cherrypick     grep           push           sync
.br
addremove      clean          help           rebuild        tag
.br
all            clone          info           remote         timeline
.br
amend          commit         init           repack         tree
.br
annotate       dbstat         ls             revert         ui
.br
bisect         delete         merge          rm             undo
.br
blame          describe       merge-base     settings       unversioned
.br
branch         diff           mv             sql            update
.br
cat            extras         open           ssl-config     version
.br
changes        finfo          patch          stash          xdiff
.br
chat           gdiff          pull           status

.SH FEATURES

Features as described on the fossil home page.

.HP
1.
.B Integrated Bug Tracking, Wiki, Forum, and Technotes
- In addition to doing distributed version control like Git and
Mercurial, Fossil also supports bug tracking, wiki, forum, and
technotes.

.HP
2.
.B Built-in Web Interface
- Fossil has a built-in and intuitive web interface that promotes
project situational awareness. Type "fossil ui" and Fossil automatically
opens a web browser to a page that shows detailed graphical history and
status information on that project.

.HP
3.
.B Self-Contained
- Fossil is a single self-contained stand-alone executable. To install,
simply download a precompiled binary for Linux, Mac, OpenBSD, or Windows
and put it on your $PATH. Easy-to-compile source code is available for
users on other platforms.

.HP
4.
.B Simple Networking
- No custom protocols or TCP ports. Fossil uses plain old HTTP (or HTTPS
or SSH) for all network communications, so it works fine from behind
restrictive firewalls, including proxies. The protocol is bandwidth
efficient to the point that Fossil can be used comfortably over dial-up
or over the exceedingly slow Wifi on airliners.

.HP
5.
.B CGI/SCGI Enabled
- No server is required, but if you want to set one up, Fossil supports
four easy server configurations.

.HP
6.
.B Autosync
- Fossil supports "autosync" mode which helps to keep projects moving
forward by reducing the amount of needless forking and merging often
associated with distributed projects.

.HP
7.
.B Robust & Reliable
- Fossil stores content using an enduring file format in an SQLite
database so that transactions are atomic even if interrupted by a
power loss or system crash. Automatic self-checks verify that all
aspects of the repository are consistent prior to each commit.

.HP
8.
.B Free and Open-Source
- Uses the 2-clause BSD license.

.SH DOCUMENTATION
https://fossil-scm.org/
.br
.B fossil
\fIui\fR
Deleted fossil.nsi.
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; example2.nsi
;
; This script is based on example1.nsi, but adds uninstall support
; and (optionally) start menu shortcuts.
;
; It will install notepad.exe into a directory that the user selects,
;

; The name of the installer
Name "Fossil"

; The file to write
OutFile "fossil-setup-7c0bd3ee08.exe"

; The default installation directory
InstallDir $PROGRAMFILES\Fossil
; Registry key to check for directory (so if you install again, it will 
; overwrite the old one automatically)
InstallDirRegKey HKLM SOFTWARE\Fossil "Install_Dir"

; The text to prompt the user to enter a directory
ComponentText "This will install fossil on your computer."
; The text to prompt the user to enter a directory
DirText "Choose a directory to install in to:"

; The stuff to install
Section "Fossil (required)"
  ; Set output path to the installation directory.
  SetOutPath $INSTDIR
  ; Put file there
  File ".\build\fossil.exe"
  ; Write the installation path into the registry
  WriteRegStr HKLM SOFTWARE\Fossil "Install_Dir" "$INSTDIR"
  ; Write the uninstall keys for Windows
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "DisplayName" "Fossil (remove only)"
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "UninstallString" '"$INSTDIR\uninstall.exe"'
  WriteUninstaller "uninstall.exe"
SectionEnd


; uninstall stuff

UninstallText "This will uninstall fossil. Hit next to continue."

; special uninstall section.
Section "Uninstall"
  ; remove registry keys
  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil"
  DeleteRegKey HKLM SOFTWARE\Fossil
  ; remove files
  Delete $INSTDIR\fossil.exe
  ; MUST REMOVE UNINSTALLER, too
  Delete $INSTDIR\uninstall.exe
  ; remove shortcuts, if any.
  RMDir "$SMPROGRAMS\Fossil"
  RMDir "$INSTDIR"
SectionEnd

; eof
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<h3>kkinnell</h3>

.plan -- <i>Fossil, the DG</i> Bwahahahaha! The cover art could be an <i>homo erectus</i> skull lying on some COBOL code...

  1.  Command line interface reference docs
     <ul>
         <li> <font color="#bb4466">Finish initial pages.</font></li>
	 <li> Start on tech-spec (serious, not "chatty") reference pages.</li>
	 <li> Edit, edit, edit.</li>
     </ul>

  2.  Support docs
     <ul>
	 <li>Basic explanation of Distributed SCM.</i>
	 <li>Tutorial
	 <ul>
	     <li>Silly source.  Start with existing dir struct.</li>
	     <li>Repository.  Creatiing and populating.</li>
	     <li>Where?  Local, Intranet, Internet.</li>
	     <li>Who? Project size defined by size of code base versus
	     number of developers.  Size matters.</li>
	     <li>How?
	     <ul>
	         <li>Open, close, commit, checkout, update, merge.</li>
	     </ul>
	     </li>
	     <li>Hmmm.  Experimenting.</li>
	     <ul>
	         <li>The road less travelled, or where'd that
		 fork come from?</li>
	     </ul>
	     <li>Oops!  Going back in time.</li>
	     <ul>
	         <li>Versions</li>
		 <ul>
		     <li>What <i>is</i> a version?</li>
		     <li>Is it a "version" or a "tag"?</li>
		     <li>DSCM redux: Revisionist versioning.</li>
		 </ul>
	     </ul>
	 </ul>
	 </li>
         <li>Basic explanation of <i>merge</i>.
	 <ol>
	     <li>Leaves, branches and baselines: We want a shrubbery!</li>
	     <li><i>update</i> merges vs. <i>merge</i> merges.
	     All merges are equal, but some are more equal than others.</li>
	 </ol>
	 </li>
     </ul>

  3.  Configuration

  42.  General
     <ul>
	 <li>Co-ordinate style and tone with drh, other devs. (documentation
         standard?  yuck.)</li>
     </ul>

  *  Tips & tricks.

  *  <b>Fossil</b> and <b>Sqlite</b>
     <ul>
         <li>Get a word in for Mrinal Kant's
	 <a href="http://code.google.com/p/sqlite-manager/">SQLite Manager</a>
	 XUL app.  Great tool.</li>
     </ul>

  *  Th (code groveling &#91;and code groveling {and code groveling ... } ... &#93; ... )
Deleted rse-notes.txt.
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From: "Ralf S. Engelschall"
Date: October 18, 2008 1:40:53 PM EDT
To: drh@hwaci.com
Subject: Some Fossil Feedback

I've today looked at your Fossil project (latest version from your
repository). That's a _really_ interesting and very promising DVCS.
While I looked around and tested it, I stumbled over some issues I want
to share with you:

o No tarball

  You currently still do not provide any tarballs of the Fossil sources.
  Sure, you are still hacking wild on the code and one can on-the-fly
  fetch a ZIP archive, but that's a manual process. For packagers (like
  me in the OpenPKG project) this is very nasty and just means that
  Fossil will usually still not be packaged. As a result it will be not
  spreaded as much as possible and this way you still do not get as much
  as possible feedback. Hence, I recommend that you let daily snapshot
  tarballs (or ZIP files) be rolled. This would be great.

o UUID

  Under http://www.fossil-scm.org/index.html/doc/tip/www/concepts.wiki
  you describe the concepts and you clearly name the artifact ID a
  "UUID" and even say that this is a "Universally Unique Identifier".
  Unfortunately, a UUID is a 128-bit entity standardized by the ISO
  (under ISO/IEC 11578:1996) and IETF (under RFC-4122) and hence it is
  *VERY MUCH* confusing and unclean that your 160-bit SHA1-based ID is
  called "UUID" in Fossil.

  I *STRONGLY* recommend you to either use real UUIDs (128-bit
  entities, where a UUID of version 5 even is SHA1-based!) or you name
  your 160-bit SHA1 entities differently (perhaps AID for "Artifact
  Identifier"?).

o "fossil cgi <script>"

  Currently we have only "fossil cgi <script>" where <script> contains
  "repository: <file>". This is a neat idea and should be kept. But
  this way one cannot easily host multiple repositories over this
  CGI interface without creating such a script for every individual
  repository.

  Perhaps a "fossil cgi --repository <file>" would help here, as this
  way one can use a generic CGI script which first figures out the
  name <name> of the individual project and then runs "fossil cgi
  --repository /path/to/repositories/<name>.db". But perhaps I'm just
  overlooking something and this is already possible...

o "fossil db <operation>"

  In Monotone DVCS we have a "mtn db" command for the low-level SQLite
  database manipulations. For instance a "mtn --db=<monotone-repository>
  db dump" is more or less equal to a "sqlite3 <monotone-repository>
  .dump". A "mtn --db=<monotone-repository> db exec '<SQL>'" is equal
  "echo '<SQL>' | sqlite3 <monotone-repository>", etc. The point is
  that the DVCS user usually has no SQLite CLI at hand but as the DVCS
  already contains more or less the complete SQLite it is very useful to
  also include the SQLite CLI functionality and wire it into the DVCS
  CLI via a "db" command.

o "fossil version"

  Mostly all VCS I know if either support a command "version" or a
  command-line option "--version" or most of the time even both. Please
  output the "This is fossil version [9e80dc66cf] 2008-10-18 13:03:36"
  there (at least additionally) instead of at the end of "fossil help".

o "--port" vs. "-port"

  In the "fossil help server" there is "--port" while under
  http://www.fossil-scm.org/index.html/doc/tip/www/quickstart.wiki there
  is "-port". I personally like GNU-long-style options "--xxxx" more
  than the CC-style options "-xxx". But anyway, independent which one is
  correct (well, perhaps both even work) only one should be documented
  to avoid confusion.

o User creation on the CLI

  There is "fossil user new ?USERNAME?" which interactively prompts
  for the capabilities and the password -- even from the TTY and not
  from STDIN. One needs "fossil user new ?USERNAME? ?CAPABILITIES?
  ?PASSWORD?" to be able to create a repository in batch without having
  to hack the user into the "user" table via the SQLite CLI. Similar:
  the "fossil user password USERNAME" should be actually "fossil user
  password USERNAME ?PASSWORD?", please.

o "-R <repository"

  There is the "-R" option for specifiying the repository. But it is
  a sub-command option and not a global option. And on "fossil ui" or
  "fossil server" it even is an argument and not an option. This is
  confusing. Every time one has to figure out how to set the repository
  on the CLI. Monotone simply uses a *global* option "--db" and that's
  it. So, I recommend that Fossil also uses a single global option
  "--repository"/"-R" instead of a command-specific option. Sure, not
  all commands might require a repository, but IMHO it is better to
  ignore the global option there than having to figure out every time
  how the repository has to be specified.

o Setup pages

  When hitting "Apply changes" on any setup page, one keeps staying on
  this page. Sure, that's what an "apply" button usually is about. But
  I at least would have liked to see a button (either instead of the
  "apply changes" or at least in addition) which applies the changes and
  goes back to the setup main page (from where one usually come).

o _FOSSIL_

    Very nice idea to use another SQLite database for the _FOSSIL_
    control file. BUT: Why "_FOSSIL_"? CVS's "CVS" directory was ugly for
    decades. Today we have ".svn", ".git", ".hg" and "_MTN"/".mtn" to get
    rid of those ugly control files or directories of the DVCS! Sure,
    dot-files are disliked by Windows people. But that's no problem, one
    can accept "_XXX" in addition to ".XXX" easily, of course.

    So, I really would like to see the file "_FOSSIL_" to be renamed
    to ".fossil" under Unix and "_fossil" under Windows or (if the
    upper-case is important to you) ".FOSSIL" and "_FOSSIL". But to see
    an ugly "_FOSSIL_" at the top of every source tree is really rather
    boring for Unix people!

o "fossil open", "fossil checkout", "fossil update".

  I'm personally confused that "fossil open" is what "checkout" does in
  other DVCS and that "checkout" is just a variant of "update". Hmmm...
  for me it looks at least one should be eleminated to reduce confusion.
  The difference between checkout and update could become an option of
  a single option. And the remaining to perhaps better should be either
  "open" + "update" or "checkout" + "update". Well, perhaps I'm still
  not understanding Fossil enough. But I can only tell that I got rather
  confused.

o "fossil commit"

  There is "fossil commit" but no short-hand "fossil ci". But there
  is "fossil status" and even just "fossil st" which clearly shows
  that Fossil allows abbreviations or at least prefix-matching on the
  commands. Sure, "ci" is not a prefix of "commit" but mostly all VCS
  support the good old RCS/CVS "ci" and similar aliases. So I recommend
  that Fossil does not only alias matching, but also provides aliases:
  "ci" for "commit", "co" for "checkout", "log" for "timeline", etc.
  Sorry, having to type the long "fossil commit" every time is too long
  for us Unix hackers ;-)

  Additionally, Fossil seems to use GnuPG when installed and --nosign is
  not specified. Hmm... two questions arise here for me: 1. should the
  use of a cryptographically strong signature really be just _optional_
  (Monotone for instance RSA signs every commit) and 2. is GnuPG here
  really the right tool (Monotone does a plain RSA signing and is even
  able to leverage a running SSH agent for the operation -- something
  which is very cool both under Unix with "ssh-agent" and under Windows
  with "pagent"). OTOH, GnuPG 2.x supports a gpg-agent, so this might be
  no longer a big issue. But Fossil should document this a little bit
  futher: how to create the necessary GnuPG key, how to setup gpg-agent,
  etc.

o "fossil diff"

  There is "Usage: fossil diff|gdiff ?-i? ?-r REVISION? FILE...". Two
  questions arise: Why do I have to specify a "FILE"? I would expect
  that a simple "fossil diff" recursively shows a "diff" of all changed
  files in the source tree. Additionally, how does one do a diff between
  two particular revisions (one seems to be not able to specifiy "-r"
  twice).

o "manifest" / "manifest.uuid"

  Above I was already bothered by the _FOSSIL_ file, but now that I
  played with Fossil I see that "manifest" and "manifest.uuid" files
  showed up in my source tree. Why is this not implicitly in the
  database and instead externally represented in the source tree.
  Hmmm... then I recommend that you use a .fossil *DIRECTORY*, place
  the control file into .fossil/control (or whatever) and the manifest
  stuff into .fossil/manifest and .fossil/manifest.uuid. But please do
  not clutter the top-level of the source three with control data of the
  DVCS.

o "fossil mv"

  There is "fossil add" and "fossil rm", but no "fossil mv". Hopefully
  this doesn't mean a file move is an "add" and a "remove" bundle, as
  this way Fossil would have trouble to know that the file was renamed
  and hence the full history tracking of a file seems to be broken.

o "fossil changes" vs. "fossil status"

  Finally, I got confused by the "fossil changes" and "fossil status"
  commands. "fossil status" seems to be a super-set of "fossil changes".
  Looks a little bit less orthogonal than necessary. I would remove
  "fossil changes" or at least do not show the file details on "fossil
  status".

Yours,
                                                                            Ralf S. Engelschall

Added setup/fossil.iss.

















































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;
; Copyright (c) 2014 D. Richard Hipp
;
; This program is free software; you can redistribute it and/or
; modify it under the terms of the Simplified BSD License (also
; known as the "2-Clause License" or "FreeBSD License".)
;
; This program is distributed in the hope that it will be useful,
; but without any warranty; without even the implied warranty of
; merchantability or fitness for a particular purpose.
;
; Author contact information:
;   drh@hwaci.com
;   http://www.hwaci.com/drh/
;

[Setup]
ArchitecturesAllowed=x86 x64
AlwaysShowComponentsList=false
AppCopyright=Copyright (c) D. Richard Hipp.  All rights reserved.
AppID={{f1c25a1f-3954-4e1a-ac36-4314c52f057c}
AppName=Fossil
AppPublisher=Fossil Development Team
AppPublisherURL=https://fossil-scm.org/
AppSupportURL=https://fossil-scm.org/
AppUpdatesURL=https://fossil-scm.org/
AppVerName=Fossil v{#AppVersion}
AppVersion={#AppVersion}
AppComments=Simple, high-reliability, distributed software configuration management system.
AppReadmeFile=https://fossil-scm.org/home/doc/tip/www/quickstart.wiki
DefaultDirName={pf}\Fossil
DefaultGroupName=Fossil
OutputBaseFilename=fossil-win32-{#AppVersion}
OutputManifestFile=fossil-win32-{#AppVersion}-manifest.txt
SetupLogging=true
UninstallFilesDir={app}\uninstall
VersionInfoVersion={#AppVersion}

[Components]
Name: Application; Description: Core application.; Types: custom compact full; Flags: fixed

[Dirs]
Name: {app}\bin

[Files]
Components: Application; Source: ..\fossil.exe; DestDir: {app}\bin; Flags: restartreplace uninsrestartdelete

[Registry]
Components: Application; Root: HKLM32; SubKey: Software\Fossil; ValueType: string; ValueName: Install_Dir; ValueData: {app}; Flags: uninsdeletekeyifempty uninsdeletevalue
Added setup/fossil.nsi.



























































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; example2.nsi
;
; This script is based on example1.nsi, but adds uninstall support
; and (optionally) start menu shortcuts.
;
; It will install notepad.exe into a directory that the user selects,
;

; The name of the installer
Name "Fossil"

; The file to write
OutFile "fossil-setup.exe"

; The default installation directory
InstallDir $PROGRAMFILES\Fossil
; Registry key to check for directory (so if you install again, it will
; overwrite the old one automatically)
InstallDirRegKey HKLM SOFTWARE\Fossil "Install_Dir"

; The text to prompt the user to enter a directory
ComponentText "This will install fossil on your computer."
; The text to prompt the user to enter a directory
DirText "Choose a directory to install in to:"

; The stuff to install
Section "Fossil (required)"
  ; Set output path to the installation directory.
  SetOutPath $INSTDIR
  ; Put file there
  File "..\fossil.exe"
  ; Write the installation path into the registry
  WriteRegStr HKLM SOFTWARE\Fossil "Install_Dir" "$INSTDIR"
  ; Write the uninstall keys for Windows
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "DisplayName" "Fossil (remove only)"
  WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil" "UninstallString" '"$INSTDIR\uninstall.exe"'
  WriteUninstaller "uninstall.exe"
SectionEnd


; uninstall stuff

UninstallText "This will uninstall fossil. Hit next to continue."

; special uninstall section.
Section "Uninstall"
  ; remove registry keys
  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\Fossil"
  DeleteRegKey HKLM SOFTWARE\Fossil
  ; remove files
  Delete $INSTDIR\fossil.exe
  ; MUST REMOVE UNINSTALLER, too
  Delete $INSTDIR\uninstall.exe
  ; remove shortcuts, if any.
  RMDir "$SMPROGRAMS\Fossil"
  RMDir "$INSTDIR"
SectionEnd

; eof
Added skins/README.md.





















































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Built-in Skins
==============

Each subdirectory under this folder describes a built-in "skin".
There are five key files in each subdirectory:

  * `css.txt`	&rarr; The CSS for the skin
  * `details.txt` &rarr; Skin-specific settings
  * `footer.txt` &rarr; Text of the Content Footer for each page
  * `header.txt` &rarr; Text of the Content Header for each page
  * `js.txt` &rarr; Javascript included in the Content Footer

To improve an existing built-in skin, simply edit the appropriate
files and recompile.

To add a new skin:

   1.   Create a new subdirectory under skins/.  (The new directory is
        called "skins/newskin" below but you should use a new original
        name, of course.)

   2.   Add files skins/newskin/css.txt, skins/newskin/details.txt,
        skins/newskin/footer.txt, skins/newskin/header.txt, and
        skins/newskin/js.txt. Be sure to "fossil add" these files.

   3.   Go to the tools/ directory and rerun "tclsh makemake.tcl".  This
        step rebuilds the various makefiles so that they have dependencies
        on the skin files you just installed.

   4.   Edit the BuiltinSkin[] array near the top of the src/skins.c source
        file so that it describes and references the "newskin" skin.

   5.   Type "make" to rebuild.

See the [custom skin documentation](/doc/$CURRENT/www/customskin.md) for
more information.

Development Hints
-----------------

One way to develop a new skin is to copy the baseline files (css.txt,
details.txt, footer.txt, header.txt, and js.txt) into a working 
directory $WORKDIR then launch Fossil with a command-line option 
"--skin $WORKDIR".  Example:

        cp -r skins/default newskin
        fossil ui --skin ./newskin

When the argument to --skin contains one or more '/' characters, the
appropriate skin files are read from disk from the directory specified.
So after launching fossil as shown above, you can edit the newskin/*.txt
files using your favorite text editor, then press Reload on your browser
to see immediate results.
Added skins/ardoise/README.md.















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## Ardoise theme

A black and grey skin ("Ardoise" is the french word for slate).

The skin includes custom icons for the file browser and the WYSIWYG editor, which are embedded directly in the css as base64 blobs. For convenience, they are also provided as standalone files in the images subdirectory.

This skin was contributed by Antoine Chavasse.

This theme is loosely based upon, and still contains some elements from the Blitz theme by James Moger.

This theme embeds & uses a modified copy of [Normalize 3.0.2](https://necolas.github.io/normalize.css/) which is distributed under an [MIT license](https://github.com/necolas/normalize.css/blob/master/LICENSE.md).

This theme embeds & uses a modified copy of [Skeleton](http://getskeleton.com) which is distributed under an [MIT license](https://github.com/dhg/Skeleton/blob/master/LICENSE.md).

The sass version of Skeleton used in this project was made by [Seth Coelen](https://github.com/whatsnewsaes).
Added skins/ardoise/css.txt.










































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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@charset "UTF-8";
/*! normalize.css v3.0.3 | MIT License | github.com/necolas/normalize.css */
hr,
input[type=search] {
  box-sizing: content-box
}
img,
legend,
table.login_out,
table.login_out td,
tr.timelineCurrent,
tr.timelineCurrent td.timelineTableCell,
tr.timelineSelected {
  background-color: initial;
  border: 0
}
ol,
p,
ul {
  margin-top: 0
}
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
pre > code,
section,
summary {
  display: block
}
ul.browser li.dir,
ul.browser li.file {
  background-position: 0 center;
  padding-left: 22px;
  padding-top: 2px
}
.container,
.filetree a,
.filetree li,
.filetree ul ul,
.mainmenu ul,
sub,
sup {
  position: relative
}
.filetree .dir > div.filetreeline > a,
ul.browser li.dir > a {
  background-image: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyMCIgaGVpZ2h0PSIxNiIgdmlld0JveD0iMCAwIDUuMjkyIDQuMjMzIj48cGF0aCBkPSJNLjc5NC41M3YzLjE3NGgzLjcwNFYxLjMyM0gyLjkxVi41Mjl6IiBmaWxsPSIjMWQyMDIxIiBzdHJva2U9IiNmZjgwMDAiIHN0cm9rZS13aWR0aD0iLjUyOSIgc3Ryb2tlLWxpbmVjYXA9InJvdW5kIiBzdHJva2UtbGluZWpvaW49InJvdW5kIi8+PC9zdmc+)
}
dfn,
span.modpending {
  font-style: italic
}
html {
  font-family: sans-serif;
}
audio,
canvas,
progress,
video {
  display: inline-block;
  vertical-align: baseline
}
audio:not([controls]) {
  display: none;
  height: 0
}
.filetree li.last>ul:before,
.filetree ul.collapsed,
[hidden],
template {
  display: none
}
a {
  background-color: transparent;
  color: #ff8000;
  text-decoration: unset
}
a:active,
a:hover,
abbr[title] {
  border-bottom: 1px dotted
}
b,
optgroup,
strong,
td.usetupEditLabel {
  font-weight: 700
}
mark {
  background: #ff0
}
small {
  font-size: 80%
}
sub,
sup {
  font-size: 75%;
  line-height: 0;
  vertical-align: baseline
}
sup {
  top: -.5em
}
sub {
  bottom: -.25em
}
svg:not(:root) {
  overflow: hidden
}
figure {
  margin: 1em 40px
}
hr {
  height: 0;
  margin-top: 3rem;
  margin-bottom: 3.5rem;
  border-width: 0;
  border-top: 1px solid #626262
}
pre {
  overflow: auto
}
code,
kbd,
pre,
samp {
  font-family: monospace,monospace;
  font-size: 1em
}
button,
input,
optgroup,
select,
textarea {
  color: inherit;
  font: inherit;
  margin: 0
}
body,
h5 {
  line-height: 1.5
}
button {
  overflow: visible
}
button,
select {
  text-transform: none
}
button,
html input[type=button],
input[type=reset],
input[type=submit] {
  cursor: pointer
}
button[disabled],
html input[disabled] {
  cursor: default
}
button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0
}
input {
  line-height: normal
}
input[type=checkbox],
input[type=radio] {
  box-sizing: border-box;
  padding: 0;
  display: inline
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
  height: auto
}
input[type=search]::-webkit-search-cancel-button,
fieldset {
  border: 1px solid silver;
  margin: 0 2px
}
legend {
  padding: 0
}
table {
  border-spacing: 0;
  width: 100%
}
html {
  font-size: 62.5%
}
body {
  margin: 0;
  font-size: 1.4em;
  font-weight: 400;
  font-family: HelveticaNeue,"Helvetica Neue",Helvetica,Arial,sans-serif;
  color: #ddd;
  background-color: #303536
}
a:hover {
  color: #e67300
}
.full-width,
.u-full-width {
  width: 100%;
  box-sizing: border-box
}
.max-full-width,
.u-max-full-width {
  max-width: 100%;
  box-sizing: border-box
}
.pull-right,
.u-pull-right {
  float: right
}
.pull-left,
.u-pull-left {
  float: left
}
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 1rem 0;
  font-weight: 700
}
h1 {
  font-size: 3rem;
  line-height: 1.2
}
h2 {
  font-size: 2.6rem;
  line-height: 1.25
}
h3 {
  font-size: 2.4rem;
  line-height: 1.3
}
h4 {
  font-size: 2rem;
  line-height: 1.35
}
h5 {
  font-size: 1.6rem
}
h6 {
  font-size: 1.4rem;
  line-height: 1.6
}
h1 small,
h2 small,
h3 small,
h4 small,
h5 small,
h6 small {
  font-size: .75em;
  font-weight: 400;
  color: #ccc
}
p {
  display: flow-root
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box
}
.column,
.columns {
  width: 100%;
  /*float: left; can break README.md in /dir view*/
  box-sizing: border-box
}
@media (min-width:400px) {
  .container {
    width: 95%;
    padding: 0
  }
}
.button,
button,
input[type=button],
input[type=reset],
input[type=submit] {
  padding: 0 30px;
  font-size: 11px;
  line-height: 32px;
  letter-spacing: .1rem;
  text-transform: uppercase;
  height: 32px;
  font-weight: 600;
  display: inline-block;
  box-sizing: border-box;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  cursor: pointer
}
input[type=submit]:disabled {
  color: rgb(70,70,70);
  background-color: rgb(153,153,153);
}

@media (min-width:550px) {
  .container {
    width: 95%
  }
  .column,
  .columns {
    margin-left: 4%
  }
  .column:first-child,
  .columns:first-child {
    margin-left: 0
  }
  .one.column,
  .one.columns {
    width: 4.66667%
  }
  .two.columns {
    width: 13.33333%
  }
  .three.columns {
    width: 22%
  }
  .four.columns,
  .one-third.column {
    width: 30.66667%
  }
  .five.columns {
    width: 39.33333%
  }
  .one-half.column,
  .six.columns {
    width: 48%
  }
  .seven.columns {
    width: 56.66667%
  }
  .eight.columns,
  .two-thirds.column {
    width: 65.33333%
  }
  .nine.columns {
    width: 74%
  }
  .ten.columns {
    width: 82.66667%
  }
  .eleven.columns {
    width: 91.33333%
  }
  .twelve.columns {
    width: 100%;
    margin-left: 0
  }
  .offset-by-one.column,
  .offset-by-one.columns {
    margin-left: 8.66667%
  }
  .offset-by-two.column,
  .offset-by-two.columns {
    margin-left: 17.33333%
  }
  .offset-by-three.column,
  .offset-by-three.columns {
    margin-left: 26%
  }
  .offset-by-four.column,
  .offset-by-four.columns,
  .offset-by-one-third.column,
  .offset-by-one-third.columns {
    margin-left: 34.66667%
  }
  .offset-by-five.column,
  .offset-by-five.columns {
    margin-left: 43.33333%
  }
  .offset-by-one-half.column,
  .offset-by-six.column,
  .offset-by-six.columns {
    margin-left: 52%
  }
  .offset-by-seven.column,
  .offset-by-seven.columns {
    margin-left: 60.66667%
  }
  .offset-by-eight.column,
  .offset-by-eight.columns,
  .offset-by-two-thirds.column,
  .offset-by-two-thirds.columns {
    margin-left: 69.33333%
  }
  .offset-by-nine.column,
  .offset-by-nine.columns {
    margin-left: 78%
  }
  .offset-by-ten.column,
  .offset-by-ten.columns {
    margin-left: 86.66667%
  }
  .offset-by-eleven.column,
  .offset-by-eleven.columns {
    margin-left: 95.33333%
  }
}
.button,
button {
  color: #aaa;
  background-color: #444;
  border-radius: 5px;
  border: 0
}
input[type=button],
input[type=reset],
input[type=submit] {
  color: #ddd;
  background-color: #446979;
  border: 0;
  border-radius: 5px
}
.button:hover,
button:hover {
  color: #444;
  background-color: #aaa;
  outline: 0
}
input[type=button]:hover,
input[type=reset]:hover,
input[type=submit]:hover {
  color: #446979;
  background-color: #ddd;
  outline: 0
}
.button:focus,
button:focus,
input[type=button]:focus,
input[type=reset]:focus,
input[type=submit]:focus {
  color: #333;
  border-color: #888;
  outline: 0
}
.button.button-primary,
.button.button-primary:focus,
.button.button-primary:hover,
button.button-primary,
button.button-primary:focus,
button.button-primary:hover,
input[type=button].button-primary,
input[type=button].button-primary:focus,
input[type=button].button-primary:hover,
input[type=reset].button-primary,
input[type=reset].button-primary:focus,
input[type=reset].button-primary:hover,
input[type=submit].button-primary,
input[type=submit].button-primary:focus,
input[type=submit].button-primary:hover {
  color: #303536;
  background-color: #ff8000;
  border-color: #ff8000
}
input[type=email],
input[type=number],
input[type=password],
input[type=search],
input[type=tel],
input[type=text],
input[type=url] {
  box-shadow: none;
  box-sizing: border-box;
}
input[type=email],
input[type=number],
input[type=password],
input[type=search],
input[type=tel],
input[type=text],
input[type=url],
select,
textarea {
  height: 32px;
  padding: 6px 10px;
  color: #bbb;
  background-color: #303536;
  border: 0;
  border-radius: 5px;
  box-shadow: none;
  box-sizing: border-box
}
textarea, select {
  height: initial;
}
input[type=email]:hover,
input[type=number]:hover,
input[type=password]:hover,
input[type=search]:hover,
input[type=tel]:hover,
input[type=text]:hover,
input[type=url]:hover,
select:hover,
textarea:hover {
  color: #eef8ff;
  background-color: #555
}
textarea {
  overflow: auto;
  min-height: 65px;
  padding-top: 6px;
  padding-bottom: 6px
}
input[type=email]:focus,
input[type=number]:focus,
input[type=password]:focus,
input[type=search]:focus,
input[type=tel]:focus,
input[type=text]:focus,
input[type=url]:focus,
select:focus,
textarea:focus {
  border: 1px solid #ff8000;
  outline: 0
}
label,
legend {
  margin-bottom: .5rem;
  font-weight: 600
}
fieldset {
  padding: 0;
  border-width: 0
}
label > .label-body {
  display: inline-block;
  margin-left: .5rem;
  font-weight: 400
}
ul {
  list-style: square
}
ol {
  list-style: decimal
}
ol,
ul {
  padding-left: 3rem
}
li {
  margin-bottom: 0
}
ol ol,
ol ul,
ul ol,
ul ul {
  margin: 1rem 0 1rem 2rem
}
code {
  padding: .2rem .5rem;
  margin: 0 .2rem;
  font-size: 90%;
  white-space: nowrap;
  background: #000;
  border: 2px solid #bbb;
  border-radius: 5px
}
table.numbered-lines td.file-content > pre {
  margin-top: -2px/*offset CODE tag border*/;
}
table.numbered-lines {
  font-family: monospace;
}
table.numbered-lines pre {
  font-family: inherit;
}
pre > code {
  padding: 1rem 1.5rem;
  white-space: pre
}
td,
th {
  padding: 1px 5px;
  text-align: left
}
td:first-child,
th:first-child {
  padding-left: 0
}
.button,
button {
  margin-bottom: 1rem
}
fieldset,
input,
select,
textarea {
  margin-bottom: .5rem
}
blockquote,
dl,
figure,
ol,
p,
pre,
table,
ul {
  margin-bottom: 1.5rem
}
header {
  color: #888;
  font-weight: 400;
  padding-top: 10px;
  border-width: 0
}
.filetree li > ul:before,
.filetree li li:before {
  border-left: 2px solid #888;
  content: '';
  position: absolute
}
.filetree>ul,
header .logo,
header .logo h1 {
  display: inline-block
}
header .login {
  padding-top: 2px;
  text-align: right
}
header .login .button {
  margin: 0
}
header h1 {
  margin: 0;
  color: #888;
  display: inline-block
}
header .title h1 {
  padding-bottom: 10px
}
header .login,
header h1 small,
header h2 small {
  color: #777
}
.middle {
  background-color: #1d2021;
  padding-bottom: 20px;
  max-width: 100%;
  box-sizing: border-box
}
.content {
  padding-top: 8px;
  padding-left: 8px;
  padding-right: 8px
}
#hbdrop a,
.content a {
  color: #8cf
}
#hbdrop a:hover,
.content a:hover,
.submenu a:hover,
.submenu label:hover {
  color: #fff
}
.artifact_content hr:first-of-type {
  margin: 0;
  border: 0
}
.artifact_content blockquote:first-of-type {
  padding: 1px 20px;
  margin: 0 0 20px;
  background: #000;
  border-radius: 5px
}
footer {
  padding: 10px 0 60px;
  border-top: 0;
  color: #888
}
footer a {
  color: #527b8f;
  background-repeat: no-repeat;
  background-position: center top 10px
}
footer a:hover {
  color: #eef8ff
}
.mainmenu {
  background-color: #161819;
  border-top-right-radius: 15px;
  border-top-left-radius: 15px;
  clear: both
  z-index: 21;
}
.mainmenu ul {
  list-style: none;
  border-top: 1px solid transparent;
  padding: 0
}
.mainmenu li {
  outline: 0;
  float: left;
  margin: 0
}
.mainmenu li.active {
  background-image: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNyIgaGVpZ2h0PSI5IiB2aWV3Qm94PSIwIDAgNC40OTggMi4zODEiPjxwYXRoIGQ9Ik00LjIzMyAyLjM4MUguMjY1bC45OTgtMS4wNTguOTg2LTEuMDU4Ljk5OCAxLjA2MnoiIGZpbGw9IiNmZjgwMDAiLz48L3N2Zz4=);
  background-repeat: no-repeat;
  background-position: center bottom
}
.mainmenu li a {
  color: #66a8c7;
  padding: 10px 15px
}
.mainmenu li.active a {
  text-shadow: 0 0 1px #b1d2e2
}
.mainmenu li:hover {
  background-color: #ff8000;
  border-radius: 5px
}
.mainmenu li:hover a {
  color: #000
}
nav#hbdrop {
  background-color: #161819;
  border-radius: 15px;
  display: none;
  width: 100%;
  position: absolute;
  z-index: 20;
}
.submenu {
  padding: 4px 0;
  background-color: #000;
  border-bottom-right-radius: 15px;
  border-bottom-left-radius: 15px;
  line-height: 2.5
}
.section,
.sortable thead,
.userTable thead {
  background-color: #404040
}
.submenu input,
.submenu select {
  margin: 0 0 0 5px
}
.submenu a,
.submenu label {
  display: inline;
  font-weight: 400;
  color: #5e9ab6;
  padding: 25px 15px;
  text-decoration: none;
  border-radius: 5px
}
.section {
  font-weight: 700;
  padding: 9px 10px 10px;
  margin: 10px 0;
  border-radius: 5px
}
.sectionmenu {
  border-top: 0;
  margin-top: -10px;
  margin-bottom: 10px;
  padding: 5px;
  text-align: center;
  background: #000;
  border-bottom-right-radius: 15px;
  border-bottom-left-radius: 15px
}
.sectionmenu a {
  display: inline-block;
  margin-top: 5px;
  margin-right: 1em
}
ul.browser {
  list-style: none;
  line-height: 1.6
}
ul.browser li.dir {
  background-repeat: no-repeat
}
.filetree a,
ul.browser li.file > a{
  background-image: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyMCIgaGVpZ2h0PSIxNiIgdmlld0JveD0iMCAwIDUuMjkyIDQuMjMzIj48cGF0aCBkPSJNMS4zMjMuMjY1djMuNzA0aDIuNjQ2VjEuMzIzTDIuOTEuMjY1eiIgZmlsbD0iIzFkMjAyMSIgc3Ryb2tlPSIjZGRkIiBzdHJva2Utd2lkdGg9Ii41MjkiIHN0cm9rZS1saW5lam9pbj0icm91bmQiLz48cGF0aCBkPSJNMi42NDYuMjY1aC4yNjR2MS4zMjNoMS4wNiIgZmlsbD0iIzFkMjAyMSIgc3Ryb2tlPSIjZGRkIiBzdHJva2Utd2lkdGg9Ii41MjkiIHN0cm9rZS1saW5lam9pbj0icm91bmQiLz48L3N2Zz4=);
  background-repeat: no-repeat
}
div.filetreeline:hover *,
ul.browser li.dir:hover,
ul.browser li.dir:hover *,
ul.browser li.file:hover,
ul.browser li.file:hover * {
  background-color: #333
}
td.browser,
td.tktDescLabel {
  vertical-align: top
}
td.tktTlOpen {
  color: #ffa0a0;
}
td.tktTlClosed {
  color: #555;
}
div.filetreeline {
  display: table;
  width: 100%;
  white-space: nowrap
}
.filetree {
  margin: 1em 0;
  line-height: 1.6
}
.filetree ul {
  margin: 0;
  padding: 0;
  list-style: none
}
.filetree ul ul {
  margin: 0 0 0 21px
}
.filetree li {
  margin: 0;
  padding: 0
}
.filetree li li:before {
  top: -.8em;
  left: -14px;
  width: 16px;
  height: 1.5em;
  border-bottom: 2px solid #888
}
.filetree li > ul:before {
  top: -1.5em;
  bottom: 0;
  left: -35px
}
.filetree a {
  z-index: 1;
  display: table-cell;
  min-height: 16px;
  padding-left: 22px;
  background-position: center left
}
div.filetreeage {
  display: table-cell;
  padding-left: 10em;
  text-align: right
}
.fileage tr:first-child {
  background-color: #404040!important
}
.fileage tr:nth-child(odd),
.sortable tbody tr:nth-child(even),
.userTable tbody tr:nth-child(even) {
  background-color: #2c2c2c
}
.fileage tr:nth-child(even):hover,
.fileage tr:nth-child(odd):hover,
.sortable thead:hover {
  background-color: #555
}
.fileage tr:nth-child(even),
.sortable tbody tr:nth-child(odd),
.userTable tbody tr:nth-child(odd) {
  background-color: #181818
}
.fileage td,
.sortable td,
.userTable td {
  vertical-align: top;
  text-align: left;
  padding-top: 3px;
  border-left: 1px solid #333
}
.fileage td:first-child,
.sortable td:first-child,
.userTable td:first-child {
  border-left: transparent
}
table.label-value th {
  vertical-align: middle
}
.brlist table td {
  padding: 5px
}
.sortable,
.userTable {
  border-color: transparent;
  width: 75%
}
td.timelineTime,
tr.timelineBottom td {
  border-bottom: 0
}
.sortable tbody tr:nth-child(even):hover,
.sortable tbody tr:nth-child(odd):hover,
.userTable tbody tr:nth-child(even):hover,
.userTable tbody tr:nth-child(odd):hover {
  background-color: #444
}
div.timelineDate {
  font-weight: 700;
  white-space: nowrap
}
td.timelineTime {
  vertical-align: top;
  text-align: right;
  white-space: nowrap;
  padding-top: .75em
}
td.timelineGraph {
  width: 20px;
  text-align: left;
  vertical-align: top;
  border-bottom: 0
}
a.timelineHistLink {
  text-transform: lowercase
}
span.timelineComment {
  padding: 0 5px
}
.report th,
span.timelineEllipsis {
  cursor: pointer
}
table.timelineTable {
  border-spacing: 2px 3px
}
.timelineModernCell, .timelineColumnarCell, .timelineDetailCell, .timelineCompactCell, .timelineVerboseCell {
  vertical-align: top;
  text-align: left;
  padding: .75em;
  border-radius: 5px;
  background: #000
}
.timelineSelected > .timelineColumnarCell,
.timelineSelected > .timelineCompactCell,
.timelineSelected > .timelineDetailCell,
.timelineSelected > .timelineModernCell,
.timelineSelected > .timelineVerboseCell {
  padding: .75em;
  border-radius: 5px;
  border: solid #ff8000;
  vertical-align: top;
  text-align: left;
  background: #442800
}
span.timelineSelected {
  border-radius: 5px;
  border: solid #ff8000;
  vertical-align: top;
  text-align: left;
  background-color: #442800;
}
.timelineSelected {
  box-shadow: none;
}
.timelineSecondary {}
.timelineSecondary > .timelineColumnarCell,
.timelineSecondary > .timelineCompactCell,
.timelineSecondary > .timelineDetailCell,
.timelineSecondary > .timelineModernCell,
.timelineSecondary > .timelineVerboseCell {
  padding: .75em;
  border-radius: 5px;
  border: solid #0080ff;
  vertical-align: top;
  text-align: left;
  background: #002844
}
span.timelineSecondary {
  border-radius: 5px;
  border: solid #0080ff;
  vertical-align: top;
  text-align: left;
  background: #002844
}
.timelineCurrent > .timelineColumnarCell,
.timelineCurrent > .timelineCompactCell,
.timelineCurrent > .timelineDetailCell,
.timelineCurrent > .timelineModernCell,
.timelineCurrent > .timelineVerboseCell {
  vertical-align: top;
  text-align: left;
  padding: .75em;
  border-radius: 5px;
  border: dashed #ff8000
}
.timelineModernCell[id], .timelineColumnarCell[id], .timelineDetailCell[id] {
  background-color: #000
}
.tl-canvas {
  margin: 0 6px 0 10px
}
.tl-rail {
  width: 18px
}
.tl-mergeoffset {
  width: 2px
}
.tl-nodemark {
  margin-top: .8em
}
.tl-node {
  width: 10px;
  height: 10px;
  border: 2px solid #bbb;
  background: #111;
  cursor: pointer
}
.tl-node.leaf:after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 4px;
  height: 4px;
  background: #bbb
}
.tl-node.closed-leaf svg {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 10px;
  height: 10px;
  color: #bbb;
}
.tl-node.sel:after {
  content: '';
  position: absolute;
  top: 1px;
  left: 1px;
  width: 8px;
  height: 8px;
  background: #ff8000
}
.tl-arrow {
  width: 0;
  height: 0;
  transform: scale(.999);
  border: 0 solid transparent
}
.tl-arrow.u {
  margin-top: -1px;
  border-width: 0 3px;
  border-bottom: 7px solid
}
.tl-arrow.u.sm {
  border-bottom: 5px solid #bbb
}
.tl-line {
  background: #bbb;
  width: 2px
}
.tl-arrow.merge {
  height: 1px;
  border-width: 2px 0
}
.tl-arrow.merge.l {
  border-right: 3px solid #bbb
}
.tl-arrow.merge.r {
  border-left: 3px solid #bbb
}
.tl-line.merge {
  width: 1px
}
.tl-arrow.cherrypick {
  height: 1px;
  border-width: 2px 0;
}
.tl-arrow.cherrypick.l {
  border-right: 3px solid #bbb;
}
.tl-arrow.cherrypick.r {
  border-left: 3px solid #bbb;
}
.tl-line.cherrypick.h {
  width: 0px;
  border-top: 1px dashed #bbb;
  border-left: 0px dashed #bbb;
  background: rgba(255,255,255,0);
}
.tl-line.cherrypick.v {
  width: 0px;
  border-top: 0px dashed #bbb;
  border-left: 1px dashed #bbb;
  background: rgba(255,255,255,0);
}

.intLink[title="Add indentation"],
.intLink[title="Center align"],
.intLink[title="Dotted list"],
.intLink[title="Left align"],
.intLink[title="Numbered list"],
.intLink[title="Remove formatting"],
.intLink[title="Right align"],
.intLink[title=Bold],
.intLink[title=Hyperlink],
.intLink[title=Italic],
.intLink[title=Quote],
.intLink[title=Redo],
.intLink[title=Underline],
.intLink[title=Undo] {
  width: 0;
  height: 0;
  padding: 11px
}
.tl-arrow.warp {
  margin-left: 1px;
  border-width: 3px 0;
  border-left: 7px solid #600000
}
.tl-line.warp {
  background: #600000
}
table.login_out .login_out_label {
  font-weight: 700;
  text-align: right
}
table.diff {
  width: 100%;
  overflow: auto;
  font-size: 1rem;
  background: #000;
  border-radius: 5px;
}
table.diff pre {
  font-size: 1.15rem;
  scrollbar-color: black #999;
}
table.udiff pre {
  padding: 0 0
}
td.difftxt {
  width: 52rem;
}
td.diffln ins {
  background-color: #559855;
  color: #000;
  text-decoration: none;
}
td.diffln del {
  background-color: #c55;
  color: #000;
  text-decoration: none;
}
td.difftxt del {
  background-color: inherit;
  text-decoration: none;
}
td.difftxt del > del {
  background-color: #c55;
  color: #000;
  text-decoration: none;
}
td.difftxt ins {
  background-color: inherit;
  text-decoration: none;
}
td.difftxt ins > ins {
  background-color: #559855;
  color: #000;
  text-decoration: none;
}

tr.diffskip.jchunk {
  background-color: #404040;
}
tr.diffskip > td.chunkctrl .jcbutton {
  background-color: black;
}

table.report {
  width: 100%;
  cursor: auto;
  margin: 0 0 1em;
  color: #000
}
table.report thead {
  color: #ddd
}
table.report a {
  color: #0374ca
}
.report td,
.report th {
  border: 0;
  font-size: .9em;
  padding: 5px
}
.report thead + tbody tr:hover {
  background-color: #ff8000!important
}
tbody tr:nth-child(odd) td.tktDescValue,
tbody tr:nth-child(odd) td.tktDspValue {
  text-align: left;
  vertical-align: top;
  background: #181818;
  padding: 10px
}
tbody tr:nth-child(odd) td.tktDescLabel,
tbody tr:nth-child(odd) td.tktDspLabel {
  width: 70px;
  text-align: right;
  overflow: hidden;
  font-weight: 700;
  padding: 10px;
  background: #484848
}
tbody tr:nth-child(even) td.tktDescValue,
tbody tr:nth-child(even) td.tktDspValue {
  text-align: left;
  vertical-align: top;
  background: #2c2c2c;
  padding: 10px
}
tbody tr:nth-child(even) td.tktDescLabel,
tbody tr:nth-child(even) td.tktDspLabel {
  width: 70px;
  text-align: right;
  overflow: hidden;
  font-weight: 700;
  padding: 10px;
  margin: 2px;
  background: #555
}
td.tktDescLabel,
td.tktDspLabel {
  width: 70px;
  text-align: right;
  overflow: hidden;
  font-weight: 700;
  padding: 10px;
  background-color: #404040
}
td.tktDescValue code,
td.tktDescValue pre,
td.tktDspValue code,
td.tktDspValue pre {
  white-space: pre-wrap
}
div.tktComments {
  width: 100%;
  margin: 30px 0 10px
}
div.tktCommentHeader {
  border: 1px solid #ccc;
  background-color: #f8f8f8;
  padding: 10px;
  margin-bottom: 10px
}
span.tktCommentLogin {
  display: inline-block;
  font-weight: 700;
  color: #002060
}
div.tktCommentBody {
  margin: 10px 40px 30px
}
span.ueditInheritNobody {
  color: #72d472;
  padding: .2em
}
span.ueditInheritDeveloper {
  color: #ff5d5d;
  padding: .2em
}
span.ueditInheritReader {
  color: #f0b850;
  padding: .2em
}
span.ueditInheritAnonymous {
  color: #7d7dff;
  padding: .2em
}
#wysiwygBox {
  padding: 12px;
  color: #bbb;
  background-color: #000;
  border: transparent!important;
  border-radius: 5px
}
[id=toolBar2] {
  cursor: pointer;
  display: inline-block
}
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}
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p.noMoreShun,
p.shunned,
span.modpending {
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}
table.captcha {
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  border-radius: 5px
}
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.mainmenu:after,
.row:after,
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  clear: both
}
div.forumSel {
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}
body.forum .forumPosts.fileage a:visited {
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}
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  border: 2px solid #aa0;
}

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}
.capsumRead {
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}
.capsumWrite {
  background-color: #662;
}
body.branch .brlist > table > tbody > tr:hover:not(.selected),
body.branch .brlist > table > tbody > tr.selected {
  background-color: #442800;
}
Added skins/ardoise/details.txt.





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timeline-arrowheads:        0
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           1
pikchr-background:          0x1d2021
Added skins/ardoise/footer.txt.















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    <th1>
      if {[string first artifact $current_page] == 0 || [string first hexdump $current_page] == 0} {
        html "</div>"
      }
    </th1>
  </div> <!-- end div container -->
</div> <!-- end div middle max-full-width -->
<footer>
  <div class="container">
    <div class="pull-right">
      <a href="https://fossil-scm.org/">Fossil $release_version $manifest_version $manifest_date</a>
    </div>
    This page was generated in about <th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s
  </div>
</footer>
Added skins/ardoise/header.txt.



















































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<header>
  <div class="container">
    <div class="login pull-right">
      <th1>
        if {[info exists login]} {
          html "<b>$login</b> — <a class='button' href='$home/login'>Logout</a>\n"
        } else {
          html "<a class='button' href='$home/login'>Login</a>\n"
        }
      </th1>
    </div>
    <div class='title'>
      <h1>$<project_name>
      <th1>
      if {[anycap jor]} {
        html "<a class='rss' href='$home/timeline.rss'></a>"
      }
      </th1>
      <small> &nbsp;$<title></small></h1>
    </div>

    <!-- Main Menu -->
    <nav class="mainmenu" title="Main Menu">
      <ul>
        <th1>
          html "<li><a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a></li>\n"
          builtin_request_js hbmenu.js
          set once 1
          foreach {name url expr class} $mainmenu {
            if {![capexpr $expr]} continue
            if {$once && [string match $url\[/?#\]* /$current_page/]} {
              set class "$class active"
              set once 0
            }
            html "<li class='$class'>"
            if {[string match /* $url]} {set url $home$url}
            html "<a href='$url'>$name</a></li>\n"
          }
        </th1>
      </ul>
    </nav>
    <nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
  </div> <!-- end div container -->
</header>
<div class="middle max-full-width">
  <div class="container">
    <th1>
      if {[string first artifact $current_page] == 0 || [string first hexdump $current_page] == 0} {
        html "<div class=\"artifact_content\">"
      }
    </th1>
Added skins/ardoise/images/active.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="17" height="9" viewBox="0 0 4.498 2.381"><path d="M4.233 2.381H.265l.998-1.058.986-1.058.998 1.062z" fill="#ff8000"/></svg>
Added skins/ardoise/images/addindent.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.058 1.323h3.704M2.381 2.381h2.382M2.381 3.44h2.382M1.058 4.498h3.704" fill="none" stroke="#aaa" stroke-width=".529"/><path d="M2.117 2.91L.794 2.117v1.587z" fill="#66a8c7"/></svg>
Added skins/ardoise/images/addindent_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 5.821 5.821" height="22" width="22"><rect width="5.821" height="5.821" y="-.001" rx=".265" ry=".265" fill="#555"/><path d="M1.058 1.322h3.704M2.381 2.38h2.382M2.381 3.439h2.382M1.058 4.497h3.704" fill="none" stroke="#ddd" stroke-width=".529"/><path d="M2.117 2.91L.794 2.116v1.587z" fill="#ff8000"/></svg>
Added skins/ardoise/images/blist.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M2.117 1.322h2.91M2.117 2.91h2.91m-2.91 1.587h2.91" fill="none" stroke="#aaa" stroke-width=".529"/><circle r=".265" cy="1.322" cx="1.323" fill="#66a8c7"/><circle r=".265" cy="2.91" cx="1.323" fill="#66a8c7"/><circle r=".265" cy="4.497" cx="1.323" fill="#66a8c7"/></svg>
Added skins/ardoise/images/blist_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M2.117 1.322h2.91M2.117 2.91h2.91m-2.91 1.587h2.91" fill="none" stroke="#ddd" stroke-width=".529"/><circle r=".265" cy="1.322" cx="1.323" fill="#ff8000"/><circle r=".265" cy="2.91" cx="1.323" fill="#ff8000"/><circle r=".265" cy="4.497" cx="1.323" fill="#ff8000"/></svg>
Added skins/ardoise/images/bold.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.866 1.349h.98q.67 0 .971.191.304.19.304.606 0 .282-.134.463-.131.18-.35.217v.022q.299.066.43.25.133.182.133.486 0 .43-.312.672-.31.241-.844.241H1.866zm.668 1.247h.387q.272 0 .392-.084.123-.084.123-.278 0-.181-.134-.259-.13-.08-.417-.08h-.351zm0 .53v.82h.435q.275 0 .407-.106.131-.105.131-.323 0-.392-.56-.392z" fill="#aaa"/></svg>
Added skins/ardoise/images/bold_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.866 1.349h.98q.67 0 .971.191.304.19.304.606 0 .282-.134.463-.131.18-.35.217v.022q.299.066.43.25.133.182.133.486 0 .43-.312.672-.31.241-.844.241H1.866zm.668 1.247h.387q.272 0 .392-.084.123-.084.123-.278 0-.181-.134-.259-.13-.08-.417-.08h-.351zm0 .53v.82h.435q.275 0 .407-.106.131-.105.131-.323 0-.392-.56-.392z" fill="#ddd"/></svg>
Added skins/ardoise/images/calign.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.058 1.323h3.704m-2.91 1.058H3.97M1.058 3.44h3.704m-2.91 1.058H3.97" fill="none" stroke="#aaa" stroke-width=".529"/></svg>
Added skins/ardoise/images/calign_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.058 1.322h3.704M1.852 2.38H3.97M1.058 3.439h3.704m-2.91 1.058H3.97" fill="none" stroke="#ddd" stroke-width=".529"/></svg>
Added skins/ardoise/images/clrfmt.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.72 2.346l-.172.317q-.034.064-.051.112-.016.049-.016.086 0 .066.048.097.049.03.15.03h.07l-.039.187H.794l.038-.188h.074q.048 0 .084-.01.038-.012.072-.043.035-.031.071-.085.038-.053.086-.136L2.416.657H2.9l.296 2.077q.009.055.022.102.016.046.04.08.024.033.06.052.038.02.093.02h.064l-.038.187H2.272l.038-.188h.08q.114 0 .181-.034.068-.036.068-.114 0-.029-.002-.057l-.005-.055-.054-.38zm.77-.807q-.008-.078-.017-.145L2.46 1.26l-.01-.124-.005-.124q-.026.064-.052.12l-.055.11-.065.118-.081.145-.35.625h.713zm2.238 3.753l-.128-.42h-.642l-.128.42h-.403l.622-1.77h.457l.625 1.77zm-.217-.733l-.2-.646q-.022-.074-.031-.118-.04.155-.228.764z" fill="#66a8c7"/><path d="M1.323 3.704c0 1.059 1.323.764 1.323.764" fill="none" stroke="#aaa" stroke-width=".529" stroke-linecap="square"/><path d="M2.381 3.704v1.588l1.059-.794z" fill="#aaa"/></svg>
Added skins/ardoise/images/clrfmt_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 5.821 5.821" height="22" width="22"><rect fill="#555" width="5.821" height="5.821" y="-.001" rx=".265" ry=".265"/><path fill="#ff8000" d="M1.72 2.346l-.172.317q-.034.063-.051.112-.016.048-.016.086 0 .065.048.096.049.03.15.03h.07l-.039.187H.794l.038-.188h.074q.048 0 .084-.01.038-.012.072-.043.035-.031.071-.084.038-.054.086-.136L2.416.656H2.9l.296 2.077q.009.055.022.102.016.046.04.08t.06.053q.038.019.093.019h.064l-.038.187H2.272l.038-.187h.08q.114 0 .181-.035.068-.036.068-.114 0-.029-.002-.056l-.005-.055-.054-.381zm.77-.808q-.008-.078-.017-.145l-.014-.133-.01-.124-.005-.124q-.026.064-.052.12l-.055.11-.065.118-.081.145-.35.625h.713zM4.728 5.29L4.6 4.871h-.642l-.128.42h-.403l.622-1.77h.457l.625 1.77zm-.217-.732l-.2-.645q-.022-.075-.031-.119-.04.155-.228.764z"/><path stroke-linecap="square" stroke-width=".529" stroke="#ddd" fill="none" d="M1.323 3.703c0 1.059 1.323.764 1.323.764"/><path fill="#ddd" d="M2.381 3.703v1.588l1.059-.794z"/></svg>
Added skins/ardoise/images/delindent.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.058 1.323h3.704M2.381 2.381h2.382M2.381 3.44h2.382M1.058 4.498h3.704" fill="none" stroke="#aaa" stroke-width=".529"/><path d="M.53 2.91l1.322-.793v1.587z" fill="#66a8c7"/></svg>
Added skins/ardoise/images/delindent_h.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.058 1.322h3.704M2.381 2.38h2.382M2.381 3.439h2.382M1.058 4.497h3.704" fill="none" stroke="#ddd" stroke-width=".529"/><path d="M.53 2.91l1.322-.794v1.587z" fill="#ff8000"/></svg>
Added skins/ardoise/images/dir.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="20" height="16" viewBox="0 0 5.292 4.233"><path d="M.794.53v3.174h3.704V1.323H2.91V.529z" fill="#1d2021" stroke="#ff8000" stroke-width=".529" stroke-linecap="round" stroke-linejoin="round"/></svg>
Added skins/ardoise/images/file.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="20" height="16" viewBox="0 0 5.292 4.233"><path d="M1.323.265v3.704h2.646V1.323L2.91.265z" fill="#1d2021" stroke="#ddd" stroke-width=".529" stroke-linejoin="round"/><path d="M2.646.265h.264v1.323h1.06" fill="#1d2021" stroke="#ddd" stroke-width=".529" stroke-linejoin="round"/></svg>
Added skins/ardoise/images/italic.svg.

1
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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M3.245 4.497H1.852l.077-.379.403-.177.433-2.037-.327-.176.08-.38H3.91l-.08.38-.41.176-.432 2.037.336.177z" fill="#aaa"/></svg>
Added skins/ardoise/images/italic_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M3.245 4.497H1.852l.077-.379.403-.177.433-2.037-.327-.176.08-.38H3.91l-.08.38-.41.176-.432 2.037.336.177z" fill="#ddd"/></svg>
Added skins/ardoise/images/lalign.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.058 1.323h3.704M1.058 2.381h2.91M1.058 3.44h3.704M1.058 4.498h2.91" fill="none" stroke="#aaa" stroke-width=".529"/></svg>
Added skins/ardoise/images/lalign_h.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.058 1.322h3.704M1.058 2.38h2.91m-2.91 1.059h3.704M1.058 4.497h2.91" fill="none" stroke="#ddd" stroke-width=".529"/></svg>
Added skins/ardoise/images/link.svg.

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+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.752 3.969h.793m-.793-2.117h.793M1.752 3.97c-.343 0-.659-.119-.83-.415-.171-.297-.171-.99 0-1.287.171-.296.487-.415.83-.415m2.217 2.116h-.794m.794-2.117h-.794m.794 2.117c.342 0 .658-.119.83-.415.17-.297.17-.99 0-1.287-.172-.296-.488-.415-.83-.415M2.117 2.91h1.587" fill="none" stroke="#aaa" stroke-width=".529"/></svg>
Added skins/ardoise/images/link_h.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.752 3.968h.793m-.793-2.117h.793m-.793 2.117c-.343 0-.659-.119-.83-.415-.171-.297-.171-.99 0-1.287.171-.296.487-.415.83-.415m2.217 2.117h-.794m.794-2.117h-.794m.794 2.117c.342 0 .658-.119.83-.415.17-.297.17-.99 0-1.287-.172-.296-.488-.415-.83-.415M2.117 2.91h1.587" fill="none" stroke="#ddd" stroke-width=".529"/></svg>
Added skins/ardoise/images/nlist.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M2.117 1.323h2.91M2.117 2.91h2.91m-2.91 1.588h2.91" fill="none" stroke="#aaa" stroke-width=".529"/><path d="M1.523 1.851h-.266v-.729l.002-.12.004-.13q-.066.066-.092.087l-.144.116-.129-.16.406-.323h.219zm.222 1.588h-.88v-.185l.316-.32q.14-.144.183-.199.043-.056.062-.103.02-.047.02-.098 0-.076-.043-.113-.041-.037-.111-.037-.073 0-.142.033-.07.034-.144.096L.86 2.342q.093-.08.154-.112.062-.033.134-.05.072-.018.162-.018.118 0 .208.043t.14.12q.05.078.05.178 0 .087-.03.163-.03.076-.095.156-.064.08-.226.229l-.162.152v.012h.549zm-.049.609q0 .118-.072.201-.071.083-.2.114v.005q.152.019.23.093.079.073.079.198 0 .182-.132.283-.132.101-.376.101-.205 0-.364-.068v-.226q.073.037.161.06.088.023.174.023.132 0 .195-.045t.063-.144q0-.088-.073-.125-.072-.037-.23-.037h-.096v-.205h.097q.147 0 .214-.037.068-.04.068-.132 0-.143-.18-.143-.061 0-.126.02-.064.021-.142.072l-.123-.183q.172-.124.41-.124.196 0 .31.079.113.079.113.22z" fill="#66a8c7"/></svg>
Added skins/ardoise/images/nlist_h.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M2.117 1.322h2.91M2.117 2.91h2.91m-2.91 1.587h2.91" fill="none" stroke="#ddd" stroke-width=".529"/><path d="M1.523 1.851h-.266v-.729l.002-.12.004-.13q-.066.066-.092.087l-.144.116-.129-.16.406-.323h.219zm.222 1.588h-.88v-.185l.316-.32q.14-.144.183-.199.043-.056.062-.103.02-.047.02-.098 0-.076-.043-.113-.041-.037-.111-.037-.073 0-.142.033-.07.034-.144.096L.86 2.342q.093-.08.154-.112.062-.033.134-.05.072-.018.162-.018.118 0 .208.043t.14.12q.05.078.05.178 0 .087-.03.163-.03.076-.095.156-.064.08-.226.229l-.162.152v.012h.549zm-.049.609q0 .118-.072.201-.071.083-.2.114v.005q.152.019.23.093.079.073.079.198 0 .182-.132.283-.132.101-.376.101-.205 0-.364-.068v-.226q.073.037.161.06.088.023.174.023.132 0 .195-.045t.063-.144q0-.088-.073-.125-.072-.037-.23-.037h-.096v-.205h.097q.147 0 .214-.037.068-.04.068-.132 0-.143-.18-.143-.061 0-.126.02-.064.021-.142.072l-.123-.183q.172-.124.41-.124.196 0 .31.079.113.079.113.22z" fill="#ff8000"/></svg>
Added skins/ardoise/images/quote.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M3.092 2.509q0-.27.083-.521.082-.253.26-.468.182-.215.467-.384.29-.174.703-.285v.438q-.182.066-.322.132-.141.066-.236.145-.091.074-.14.17-.046.09-.046.214 0 .083.045.133.046.05.116.095l.149.095q.079.045.149.12.07.07.116.182.045.111.045.28 0 .286-.178.435-.173.149-.434.149-.36 0-.57-.248-.207-.248-.207-.682zm-1.77 0q0-.27.083-.521.083-.253.26-.468.182-.215.468-.384.29-.174.703-.285v.438q-.186.066-.327.132-.136.066-.232.145-.09.074-.14.17-.046.09-.046.214 0 .083.046.133.045.05.116.095l.148.095q.079.045.15.12.07.07.115.182.046.111.046.28 0 .286-.178.435-.174.149-.434.149-.36 0-.57-.248-.208-.248-.208-.682z" fill="#66a8c7"/></svg>
Added skins/ardoise/images/quote_h.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M3.092 2.509q0-.27.083-.521.082-.253.26-.468.182-.215.467-.384.29-.174.703-.285v.438q-.182.066-.322.132-.141.066-.236.145-.091.074-.14.17-.046.09-.046.214 0 .083.045.133.046.05.116.095l.149.095q.079.045.149.12.07.07.116.182.045.111.045.28 0 .286-.178.435-.173.149-.434.149-.36 0-.57-.248-.207-.248-.207-.682zm-1.77 0q0-.27.083-.521.083-.253.26-.468.182-.215.468-.384.29-.174.703-.285v.438q-.186.066-.327.132-.136.066-.232.145-.09.074-.14.17-.046.09-.046.214 0 .083.046.133.045.05.116.095l.148.095q.079.045.15.12.07.07.115.182.046.111.046.28 0 .286-.178.435-.174.149-.434.149-.36 0-.57-.248-.208-.248-.208-.682z" fill="#ff8000"/></svg>
Added skins/ardoise/images/ralign.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.058 1.323h3.704m-2.91 1.058h2.91M1.058 3.44h3.704m-2.91 1.058h2.91" fill="none" stroke="#aaa" stroke-width=".529"/></svg>
Added skins/ardoise/images/ralign_h.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.058 1.322h3.704M1.852 2.38h2.91M1.058 3.439h3.704m-2.91 1.058h2.91" fill="none" stroke="#ddd" stroke-width=".529"/></svg>
Added skins/ardoise/images/redo.svg.

1
+
<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M3.734 2.007c-.314-.418-.847-.655-1.323-.529s-.946.528-1.058 1.058c-.113.531.154 1.237.529 1.588" fill="none" stroke="#66a8c7" stroke-width=".529" stroke-linecap="square" stroke-linejoin="bevel"/><path d="M4.528 1.19L2.94 2.91h1.588z" fill="#66a8c7"/></svg>
Added skins/ardoise/images/redo_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M3.734 2.006c-.314-.417-.847-.655-1.323-.529s-.946.528-1.058 1.059c-.113.53.154 1.236.529 1.587" fill="none" stroke="#ff8000" stroke-width=".529" stroke-linecap="square" stroke-linejoin="bevel"/><path d="M4.528 1.19L2.94 2.91h1.588z" fill="#ff8000"/></svg>
Added skins/ardoise/images/underline.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M4.172 1.04v2.038q0 .349-.158.611-.155.263-.45.403-.295.14-.697.14-.607 0-.943-.31-.336-.312-.336-.853V1.041h.665v1.927q0 .364.146.534.147.17.485.17.327 0 .474-.17.148-.172.148-.538V1.04z" fill="#aaa"/><path d="M1.323 4.762h3.175" fill="none" stroke="#aaa" stroke-width=".529"/></svg>
Added skins/ardoise/images/underline_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M4.172 1.04v2.038q0 .349-.158.611-.155.263-.45.403-.295.14-.697.14-.607 0-.943-.31-.336-.312-.336-.853V1.041h.665v1.927q0 .364.146.534.147.17.485.17.327 0 .474-.17.148-.172.148-.538V1.04z" fill="#ddd"/><path d="M1.323 4.762h3.175" fill="none" stroke="#ddd" stroke-width=".529"/></svg>
Added skins/ardoise/images/undo.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><path d="M1.852 2.007c.314-.418.847-.655 1.323-.529s.946.528 1.058 1.058c.113.531-.154 1.237-.529 1.588" fill="none" stroke="#66a8c7" stroke-width=".529" stroke-linecap="square" stroke-linejoin="bevel"/><path d="M1.058 1.19l1.588 1.72H1.058z" fill="#66a8c7"/></svg>
Added skins/ardoise/images/undo_h.svg.

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<svg xmlns="http://www.w3.org/2000/svg" width="22" height="22" viewBox="0 0 5.821 5.821"><rect ry=".265" rx=".265" y="-.001" height="5.821" width="5.821" fill="#555"/><path d="M1.852 2.006c.314-.417.847-.655 1.323-.529s.946.528 1.058 1.059c.113.53-.154 1.236-.529 1.587" fill="none" stroke="#ff8000" stroke-width=".529" stroke-linecap="square" stroke-linejoin="bevel"/><path d="M1.058 1.19l1.588 1.72H1.058z" fill="#ff8000"/></svg>
Added skins/black_and_white/css.txt.















































































































































































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/* General settings for the entire page */
body {
    margin:0px 0px 0px 0px;
    padding:0px;
    font-family:verdana, arial, helvetica, "sans serif";
    color:#333;
    background-color:white;
    text-size-adjust: none;
}

/* consistent colours */
h2 {
  color: #333;
}
h3 {
  color: #333;
}

/* The project logo in the upper left-hand corner of each page */
div.logo {
  display: table-cell;
  text-align: left;
  vertical-align: bottom;
  font-weight: bold;
  color: #333;
  white-space: nowrap;
}

/* The page title centered at the top of each page */
div.title {
  display: table-cell;
  font-size: 2em;
  font-weight: bold;
  text-align: center;
  color: #333;
  vertical-align: bottom;
  width: 100%;
}

/* The login status message in the top right-hand corner */
div.status {
  display: table-cell;
  padding-right: 10px;
  text-align: right;
  vertical-align: bottom;
  padding-bottom: 5px;
  color: #333;
  font-size: 0.8em;
  font-weight: bold;
  white-space: nowrap;
}

/* The header across the top of the page */
header {
    margin:10px 0px 10px 0px;
    padding:1px 0px 0px 20px;
    border-style:solid;
    border-color:black;
    border-width:1px 0px;
    background-color:#eee;
}

/* The main menu bar that appears at the top left of the page beneath
** the header. Width must be co-ordinated with the container below */
nav.mainmenu {
  float: left;
  margin-left: 10px;
  margin-right: 20px;
  font-size: 0.9em;
  font-weight: bold;
  padding:5px;
  background-color:#eee;
  border:1px solid #999;
  width:6em;
}

/* Main menu is now a list */
nav.mainmenu ul {
  padding: 0;
  list-style:none;
}
nav.mainmenu a, nav.mainmenu a:visited{
  padding: 1px 10px 1px 10px;
  color: #333;
  text-decoration: none;
}
nav.mainmenu a:hover {
  color: #eee;
  background-color: #333;
}

/* Container for the sub-menu and content so they don't spread
** out underneath the main menu */
#container {
  padding-left: 9em;
}

/* The submenu bar that *sometimes* appears below the main menu */
div.submenu, div.sectionmenu {
  padding: 3px 10px 3px 10px;
  font-size: 0.9em;
  text-align: center;
  border:1px solid #999;
  border-width:1px 0px;
  background-color: #eee;
  color: #333;
}
div.submenu a, div.submenu a:visited, div.sectionmenu>a.button:link,
div.sectionmenu>a.button:visited, div.submenu label {
  padding: 3px 10px 3px 10px;
  color: #333;
  text-decoration: none;
}
div.submenu a:hover, div.sectionmenu>a.button:hover, div.submenu label:hover {
  color: #eee;
  background-color: #333;
}

/* All page content from the bottom of the menu or submenu down to
** the footer */
div.content {
  padding: 2ex 1ex 0ex 2ex;
}

/* Some pages have section dividers */
div.section {
  margin-bottom: 0px;
  margin-top: 1em;
  padding: 1px 1px 1px 1px;
  font-size: 1.2em;
  font-weight: bold;
  border-style:solid;
  border-color:#999;
  border-width:1px 0px;
  background-color: #eee;
  color: #333;
  white-space: nowrap;
}

/* The "Date" that occurs on the left hand side of timelines */
div.divider {
  background: #eee;
  border: 2px #999 solid;
  font-size: 1em; font-weight: normal;
  padding: .25em;
  margin: .2em 0 .2em 0;
  float: left;
  clear: left;
  color: #333;
  white-space: nowrap;
}

/* The footer at the very bottom of the page */
footer {
  font-size: 0.8em;
  margin-top: 12px;
  padding: 5px 10px 5px 10px;
  text-align: right;
  background-color: #eee;
  color: #555;
}

/* <verbatim> blocks */
pre.verbatim {
  background-color: #f5f5f5;
  padding: 0.5em;
  white-space: pre-wrap;
}

/* The label/value pairs on (for example) the ci page */
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 2ex;
}
Added skins/black_and_white/details.txt.




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timeline-arrowheads:        1
timeline-circle-nodes:      0
timeline-color-graph-lines: 0
white-foreground:           0
Added skins/black_and_white/footer.txt.



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<footer>
Fossil $release_version $manifest_version $manifest_date
</footer>
Added skins/black_and_white/header.txt.




























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<header>
  <div class="logo">
    <img src="$logo_image_url" alt="logo">
    <br />$<project_name>
  </div>
  <div class="title">$<title></div>
  <div class="status"><th1>
    if {[info exists login]} {
      puts "Logged in as $login"
    } else {
      puts "Not logged in"
    }
  </th1></div>
</header>
<nav class="mainmenu" title="Main Menu">
  <th1>
    set sitemap 0
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {set url $home$url}
      html "<a href='$url'>$name</a><br/>\n"
      if {[string match /sitemap $url]} {set sitemap 1}
    }
    if {!$sitemap} {
      html "<a href='$home/sitemap'>Sitemap</a>\n"
    }
  </th1>
</nav>
Added skins/blitz/README.md.













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## Blitz Theme

Contributed by James Moger (james.moger@gitblit.com)

This theme is inspired by my own project, [Gitblit](http://gitblit.com), and offered to the Fossil project.

This theme embeds & uses an unmodified copy of [Normalize 3.0.2](https://necolas.github.io/normalize.css/) which is distributed under an [MIT license](https://github.com/necolas/normalize.css/blob/master/LICENSE.md).

This theme uses half of a heavily-modified version of [Skeleton](http://getskeleton.com) which is distributed under an [MIT license](https://github.com/dhg/Skeleton/blob/master/LICENSE.md).  None of the responsive elements (media queries) are included at this time.

The font used in the included Fossil logo image is [Trillium Web Light](http://www.google.com/fonts/specimen/Titillium+Web) @ 48px HTML color code #456a7a.

The RSS feed icon is sourced from [Font-Awesome](https://fortawesome.github.io/Font-Awesome/icons) by Dave Gandy and is distributed under the [SIL OFL 1.1 ](http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL) license.
Added skins/blitz/arrow_project.png.

cannot compute difference between binary files

Added skins/blitz/css.txt.





































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*! normalize.css v3.0.2 | MIT License | git.io/normalize */

/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 */

html {
  font-family: sans-serif; /* 1 */
  -ms-text-size-adjust: 100%; /* 2 */
  -webkit-text-size-adjust: 100%; /* 2 */
}

/**
 * Remove default margin.
 */

body {
  margin: 0;
}

/* HTML5 display definitions
   ========================================================================== */

/**
 * Correct `block` display not defined for any HTML5 element in IE 8/9.
 * Correct `block` display not defined for `details` or `summary` in IE 10/11
 * and Firefox.
 * Correct `block` display not defined for `main` in IE 11.
 */

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
section,
summary {
  display: block;
}

/**
 * 1. Correct `inline-block` display not defined in IE 8/9.
 * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
 */

audio,
canvas,
progress,
video {
  display: inline-block; /* 1 */
  vertical-align: baseline; /* 2 */
}

/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */

audio:not([controls]) {
  display: none;
  height: 0;
}

/**
 * Address `[hidden]` styling not present in IE 8/9/10.
 * Hide the `template` element in IE 8/9/11, Safari, and Firefox < 22.
 */

[hidden],
template {
  display: none;
}

/* Links
   ========================================================================== */

/**
 * Remove the gray background color from active links in IE 10.
 */

a {
  background-color: transparent;
}

/**
 * Improve readability when focused and also mouse hovered in all browsers.
 */

a:active,
a:hover {
  outline: 0;
}

/* Text-level semantics
   ========================================================================== */

/**
 * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
 */

abbr[title] {
  border-bottom: 1px dotted;
}

/**
 * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
 */

b,
strong {
  font-weight: bold;
}

/**
 * Address styling not present in Safari and Chrome.
 */

dfn {
  font-style: italic;
}

/**
 * Address variable `h1` font-size and margin within `section` and `article`
 * contexts in Firefox 4+, Safari, and Chrome.
 */

h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

/**
 * Address styling not present in IE 8/9.
 */

mark {
  background: #ff0;
  color: #000;
}

/**
 * Address inconsistent and variable font size in all browsers.
 */

small {
  font-size: 80%;
}

/**
 * Prevent `sub` and `sup` affecting `line-height` in all browsers.
 */

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

/* Embedded content
   ========================================================================== */

/**
 * Remove border when inside `a` element in IE 8/9/10.
 */

img {
  border: 0;
}

/**
 * Correct overflow not hidden in IE 9/10/11.
 */

svg:not(:root) {
  overflow: hidden;
}

/* Grouping content
   ========================================================================== */

/**
 * Address margin not present in IE 8/9 and Safari.
 */

figure {
  margin: 1em 40px;
}

/**
 * Address differences between Firefox and other browsers.
 */

hr {
  -moz-box-sizing: content-box;
  box-sizing: content-box;
  height: 0;
}

/**
 * Contain overflow in all browsers.
 */

pre {
  overflow: auto;
}

/**
 * Address odd `em`-unit font size rendering in all browsers.
 */

code,
kbd,
pre,
samp {
  font-family: monospace, monospace;
  font-size: 1em;
}

/* Forms
   ========================================================================== */

/**
 * Known limitation: by default, Chrome and Safari on OS X allow very limited
 * styling of `select`, unless a `border` property is set.
 */

/**
 * 1. Correct color not being inherited.
 *    Known issue: affects color of disabled elements.
 * 2. Correct font properties not being inherited.
 * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
 */

button,
input,
optgroup,
select,
textarea {
  color: inherit; /* 1 */
  font: inherit; /* 2 */
  margin: 0; /* 3 */
}

/**
 * Address `overflow` set to `hidden` in IE 8/9/10/11.
 */

button {
  overflow: visible;
}

/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
 * Correct `select` style inheritance in Firefox.
 */

button,
select {
  text-transform: none;
}

/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */

button,
html input[type="button"], /* 1 */
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button; /* 2 */
  cursor: pointer; /* 3 */
}

/**
 * Re-set default cursor for disabled elements.
 */

button[disabled],
html input[disabled] {
  cursor: default;
}

/**
 * Remove inner padding and border in Firefox 4+.
 */

button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */

input {
  line-height: normal;
}

/**
 * It's recommended that you don't attempt to style these elements.
 * Firefox's implementation doesn't respect box-sizing, padding, or width.
 *
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 */

input[type="checkbox"],
input[type="radio"] {
  box-sizing: border-box; /* 1 */
  padding: 0; /* 2 */
}

/**
 * Fix the cursor style for Chrome's increment/decrement buttons. For certain
 * `font-size` values of the `input`, it causes the cursor style of the
 * decrement button to change from `default` to `text`.
 */

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  height: auto;
}

/**
 * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari and Chrome
 *    (include `-moz` to future-proof).
 */

input[type="search"] {
  -webkit-appearance: textfield; /* 1 */
  -moz-box-sizing: content-box;
  -webkit-box-sizing: content-box; /* 2 */
  box-sizing: content-box;
}

/**
 * Remove inner padding and search cancel button in Safari and Chrome on OS X.
 * Safari (but not Chrome) clips the cancel button when the search input has
 * padding (and `textfield` appearance).
 */

input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}

/**
 * Define consistent border, margin, and padding.
 */

fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;
}

/**
 * 1. Correct `color` not being inherited in IE 8/9/10/11.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 */

legend {
  border: 0; /* 1 */
  padding: 0; /* 2 */
}

/**
 * Remove default vertical scrollbar in IE 8/9/10/11.
 */

textarea {
  overflow: auto;
}

/**
 * Don't inherit the `font-weight` (applied by a rule above).
 * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
 */

optgroup {
  font-weight: bold;
}

/* Tables
   ========================================================================== */

/**
 * Remove most spacing between table cells.
 */

table {
  border-collapse: collapse;
  border-spacing: 0;
}

td,
th {
  padding: 0;
}


/*
 * Blitz
 *
 * Skin inspired by Gitblit with heavily-modified excerpts from Skeleton 2.0.4.
 * Blitz is authored by james.moger@gitblit.com.
 *
 * Skeleton is authored by Dave Gamache and is distributed under the MIT license.
 * http://getskeleton.com
 *
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */

html {
  /* 62.5% so that the REM values are base 10px. */
  /* 1.5rem = 15px */
  font-size: 62.5%;
}

/* Typography
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  margin-bottom: 1rem;
  font-weight: 700;
}

h1 { font-size: 3.0rem; line-height: 1.2;  }
h2 { font-size: 2.6rem; line-height: 1.25; }
h3 { font-size: 2.4rem; line-height: 1.3;  }
h4 { font-size: 2.0rem; line-height: 1.35; }
h5 { font-size: 1.6rem; line-height: 1.5;  }
h6 { font-size: 1.4rem; line-height: 1.6;  }

h1 small, h2 small, h3 small, h4 small, h5 small, h6 small {
  font-size: 0.75em;
  font-weight: 400;
  color: #ccc;
}

pre, code {
  font-size: 1.2rem;
}

body {
  font-size: 1.4em; /* currently ems cause chrome bug misinterpreting rems on body element */
  line-height: 1.5;
  font-weight: 400;
  font-family: "HelveticaNeue", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: #333;
  background-color: #f8f8f8;
}

/* Spacing
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
button,
.button {
  margin-bottom: 1rem;
}

input,
textarea,
select,
fieldset,
pre,
blockquote,
dl,
figure,
table,
p,
ul,
ol {
  margin-bottom: 1rem;
}

p {
  margin-top: 0;
}

hr {
  margin-top: 3rem;
  margin-bottom: 3.5rem;
  border-width: 0;
  border-top: 1px solid #ccc;
}


/* Buttons
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.button,
button,
input[type="button"],
input[type="reset"],
input[type="submit"] {
  display: inline-block;
  height: 3.3rem;
  padding: 0 2.2rem;
  color: #555 !important;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 3.3rem;
  letter-spacing: .08rem;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  background-color: transparent;
  border-radius: 4px;
  border: 1px solid #ccc;
  cursor: pointer;
  box-sizing: border-box;
}

.button:hover,
button:hover,
input[type="button"]:hover,
input[type="reset"]:hover,
.button:focus,
button:focus,
input[type="button"]:focus,
input[type="reset"]:focus {
  color: #444 !important;
  background-color: #eee;
  border-color: #aaa;
  outline: 0;
}

input[type="submit"] {
  color: white !important;
  background-color: #446979;
  border-color: #446979;
}

input[type="submit"]:hover,
input[type="submit"]:focus {
  color: white !important;
  background-color: #648898;
  border-color: #648898;
}

input[type="submit"]:disabled {
  color: rgb(128,128,128);
  background-color: rgb(153,153,153);
}


/* Forms
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
input[type="email"],
input[type="number"],
input[type="search"],
input[type="text"],
input[type="tel"],
input[type="url"],
input[type="password"],
textarea,
select {
  height: 3.3rem;
  padding: 6px 10px;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: none;
  box-sizing: border-box;
}

/* Removes awkward default styles on some inputs for iOS */
input[type="email"],
input[type="number"],
input[type="search"],
input[type="text"],
input[type="tel"],
input[type="url"],
input[type="password"],
textarea {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
}

textarea {
  height: inherit;
  min-height: 65px;
  padding-top: 6px;
  padding-bottom: 6px;
}

input[type="email"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="text"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
  border: 1px solid #aaa;
  outline: 0;
}

label,
legend {
  display: block;
  margin-bottom: .5rem;
  font-weight: 700;
}

fieldset {
  padding: 0;
  border-width: 0;
}

input[type="checkbox"],
input[type="radio"] {
  display: inline;
}


/* Links
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
a {
    color: #446979;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}


/* Lists
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
ul {
  list-style: square;
}

ol {
  list-style: decimal;
}

ol, ul {
  padding-left: 3rem;
  margin-top: 0;
}

li {
  margin-bottom: 0.5rem;
}


/* Nested Lists
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
ul ul,
ul ol,
ol ol,
ol ul {
  margin: 1rem 0 1rem 2rem;
}


/* Code
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
code, kbd {
  padding: .2rem .5rem;
  margin: 0 .2rem;
  white-space: nowrap;
  background: #f8f8f8;
  border: 1px solid #ccc;
  border-radius: 4px;
}

pre > code {
  display: block;
  padding: 1rem 1.5rem;
  white-space: pre;
}

pre.verbatim {
  background-color: inherit;
  white-space: pre-wrap;
}


/* Blockquote
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
blockquote {
  padding: 0px 20px;
  margin: 0 0 20px;
  border-left: 4px solid #ccc;
}


/* Tables
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
th,
td {
  padding: 6px 5px;
  text-align: left;
  border-bottom: 1px solid #ddd; }
th:first-child,
td:first-child {
  padding-left: 0; }
th:last-child,
td:last-child {
  padding-right: 0; }


/*
 * Blitz Page Layout Design
 *
 * html > body > header > container > mainmenu
 *               middle > container > submenu & content
 *               footer > container > generation stats, fossil logo, version
 *
 ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */


/* Container
 * Represents the usable layout space for header, middle, and footer.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.container {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  box-sizing: border-box;
}


/* Header
 * Div displayed at the top of every page.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
header {
  color: #666;
  font-weight: 400;
  padding-top: 10px;
  border-width: 0px;
  border-top: 4px solid #446979;
  border-bottom: 1px solid #ccc;
}

header .logo {
  display: inline-block;
}

header .login {
  padding-top: 2px;
  text-align: right;
}

header .login .button {
  margin: 0;
}

header h1 {
  margin: 0px;
  color: #666;
  display: inline-block;
}

header .logo h1 {
  display: inline-block;
}

header .title h1 {
  padding-bottom: 10px;
}

header h1 small, header h2 small {
  color: #888;
}

header a.rss {
  display: inline-block;
  padding: 10px 15px;
  background-image: url(data:image/png;base64,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);
  background-position: center center;
  background-repeat: no-repeat;
}


/* Middle
 * Center div displayed between header and footer. Contains per-page content.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.middle {
  background-color: white;
  padding-bottom: 20px;
  max-width: 100%;
  box-sizing: border-box;
}


/* Content
 * Displayed below submenu within the middle div.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.content {
    padding-top: 15px;
}

.content a {
  color: #002060;
}


/* Footer
 * Displayed after the middle div and forms the page bottom.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
footer {
  padding: 10px 0 60px;
  border-top: 1px solid #ccc;
  background-color: #f8f8f8;
  background-image: url(data:image/png;base64,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);
  background-repeat: no-repeat;
  background-position: center top 10px;
}

footer a {
  color: #3b5c6b;
}


/* Main Menu
 * Displayed in header, contains repository links.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.mainmenu {
    clear:both;
}

.mainmenu ul {
  list-style: none outside;
  position: relative;
  border-top: 1px solid #ccc;
  padding: 0;
}

.mainmenu li {
  outline: 0;
  float: left;
  margin: 0;
}

.mainmenu li.active {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A/wD/oL2nkwAAAAlwSFlzAAALEQAACxEBf2RfkQAAAAd0SU1FB90FDxEXAZ2XRzAAAABJSURBVCjPY2CgBzhz5sx/QmoYiTXAxMSEkWRDsLkAl0GMpHoBm0EoAlu3bmUQFxcnGAboBjEhc4gxAJtLGUmJBVwuYiTXAGSDAIx5IBObnuVxAAAAAElFTkSuQmCC);
  background-repeat: no-repeat;
  background-position: center bottom;
}

.mainmenu li a,
nav#hbdrop a {
  color: #3b5c6b;
  padding: 10px 15px;
}

.mainmenu li.active a {
  font-weight: bold;
}

.mainmenu li:hover
nav#hbdrop a:hover {
    background-color: #eee;
}

nav#hbdrop {
  background-color: white;
  border: 2px solid #ccc;
  display: none;
  width: 100%;
  position: absolute;
  z-index: 20;
}



/* Submenu
 * Displayed in the middle div.  Contains page-specific form controls.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.submenu {
    padding: 10px 0px;
    border-bottom: 1px solid #ddd;
}

.submenu input, .submenu select {
  margin: 0 0 0 5px;
}

.submenu a, .submenu label {
    display: inline;
    font-weight: normal;
    color: #3b5c6b;
    padding: 5px 15px;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: 5px;
}

.submenu a:hover, .submenu label:hover {
    border: 1px solid #ccc;
}


/* Section
 * Cap/header to distinguish a section. Displayed within a content div.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.section {
    font-weight: bold;
    background-color: #f5f5f5;
    border: 1px solid #ccc;
    padding: 9px 10px 10px;
    margin: 10px 0;
}


/* Section Menu
 * Div of buttons/links, displayed with a section div within a content div.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.sectionmenu {
    border: 1px solid #ccc;
    border-top: 0;
    margin-top: -10px;
    margin-bottom: 10px;
    padding: 5px;
    text-align: center;
}
.sectionmenu a {
    display: inline-block;
    margin-top: 5px;
    margin-right: 1em;
}


/* File browser
 * Repository tree navigation.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
ul.browser {
  list-style: none;
}

ul.browser li.dir {
  padding-top: 2px;
}

ul.browser li.dir > a {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QAVQBVAFV4xrLkAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3wMLExABnLjGZQAAAEFJREFUOMtjYKAQMIaGhv4npGj16tWMuORYGBgYGOZW+eDUnNy2Ba/hLMQ4E58rCRpAyHVMlAbiqAGjBhCdmWgKAHp4Dh0ZusP3AAAAAElFTkSuQmCC);
  background-repeat: no-repeat;
  background-position: 0px center;
  padding-left: 22px;
}

ul.browser li.file {
  padding-top: 2px;
}

ul.browser li.file > a {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QAVQBVAFV4xrLkAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3wMLExMaPfBcSgAAAFNJREFUOMvtkzEOwDAIA02VL5pHwiOTJZFQmkqFOTex+CwPCCYkAaDjB+4u65ZdYGafQVV9SR4kWQUke0mwS1o2HGcAQKs0R1lpQuQKruD4jVnBAG/cGRqf0U66AAAAAElFTkSuQmCC);
  background-repeat: no-repeat;
  background-position: 0px center;
  padding-left: 22px;
}

div.filetreeline {
  display: table;
  width: 100%;
  white-space: nowrap;
}

/* tree-view top-level list */
.filetree > ul {
  display: inline-block;
}

/* tree-view lists */
.filetree ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
/* tree-view collapsed list */
.filetree ul.collapsed {
  display: none;
}
/* tree-view lists below the root */
.filetree ul ul {
  position: relative;
  margin: 0 0 0 21px;
}
/* tree-view lists items */
.filetree li {
  position: relative;
  margin: 0;
  padding: 0;
}
/* tree-view node lines */
.filetree li li:before {
  content: '';
  position: absolute;
  top: -.8em;
  left: -14px;
  width: 16px;
  height: 1.5em;
  border-left: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
}
/* tree-view directory lines */
.filetree li > ul:before {
  content: '';
  position: absolute;
  top: -1.5em;
  bottom: 0;
  left: -35px;
  border-left: 1px solid #ccc;
}
/* hide lines for last-child directories */
.filetree li.last > ul:before {
  display: none;
}

.filetree a {
  position: relative;
  z-index: 1;
  display: table-cell;
  min-height: 16px;
  padding-left: 22px;
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QAVQBVAFV4xrLkAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3wMLExMaPfBcSgAAAFNJREFUOMvtkzEOwDAIA02VL5pHwiOTJZFQmkqFOTex+CwPCCYkAaDjB+4u65ZdYGafQVV9SR4kWQUke0mwS1o2HGcAQKs0R1lpQuQKruD4jVnBAG/cGRqf0U66AAAAAElFTkSuQmCC);
  background-position: center left;
  background-repeat: no-repeat;
}

.filetree .dir > div.filetreeline > a {
  background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QAVQBVAFV4xrLkAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3wMLExABnLjGZQAAAEFJREFUOMtjYKAQMIaGhv4npGj16tWMuORYGBgYGOZW+eDUnNy2Ba/hLMQ4E58rCRpAyHVMlAbiqAGjBhCdmWgKAHp4Dh0ZusP3AAAAAElFTkSuQmCC);
}


/* Label-Value table
 * Displayed on the Check-in & Admin pages.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
table.label-value th {
  vertical-align: middle;
}


/* Branches table
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.brlist table td {
  padding: 5px;
}


/* Timeline
 * Displays chronologically-ordered check-ins with a branch graph.
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
tr.timelineCurrent {
  border-left: 2px solid orange;
  background-color: #ffc;
  border-bottom: 1px solid #ddd;
  border-right: 1px solid #ddd;
}

.timelineSelected {
  border-left: 2px solid orange;
  background-color: #ffffe8;
  border-bottom: 1px solid #ddd;
  border-right: 1px solid #ddd;
}
.timelineSecondary {
  background-color: #e8ffff;
}

tr.timelineCurrent td.timelineTableCell {
}

tr.timelineBottom td {
  border-bottom: 0;
}

div.timelineDate {
  font-weight: bold;
  white-space: nowrap;
}

td.timelineTime {
  vertical-align: top;
  text-align: right;
  white-space: nowrap;
  border-bottom: 0;
}

td.timelineGraph {
  width: 20px;
  text-align: left;
  vertical-align: top;
  border-bottom: 0;
}

a.timelineHistLink {
  text-transform: lowercase;
}

span.timelineComment {
  padding: 0px 5px;
}


/* Login/Logout
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
table.login_out {
}

table.login_out .login_out_label {
  font-weight: 700;
  text-align: right;
}

table.login_out td {
  border: 0;
}


/* Diff displays
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
table.diff {
  width: 100%;
  overflow: auto;
  border: 1px solid #ccc;
  padding: 5px;
  font-size: 1rem;
}

table.diff:focus {
  outline: none;
}


/* Ticket Reports
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
table.report {
  width: 100%;
  cursor: auto;
  border-radius: 4px;
  border: 1px solid #ccc;
  margin: 0 0 1em 0;
}

.report td, .report th {
  border: 0;
  font-size: .9em;
  padding: 5px;
}

.report th {
  cursor: pointer;
}

.report thead+tbody tr:hover {
  background-color: #f5f9fc !important;
}


/* Ticket page
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
table.tktDsp {
  border-top: 1px solid #ccc;
  border-left: 1px solid #ccc;
  width: 100%;
  margin: 15px 0px 10px 0px;
}

td.tktDspLabel, td.tktDescLabel {
  width: 70px;
  text-align: right;
  overflow: hidden;
  font-weight: 700;
  padding: 10px;
  background-color: #f8f8f8;
}

td.tktDescLabel {
  vertical-align: top;
}

td.tktDspValue, td.tktDescValue {
  text-align: left;
  vertical-align: top;
  border: 1px solid #ccc;
  padding: 10px;
}

td.tktDspValue pre, td.tktDescValue pre,
td.tktDspValue code, td.tktDescValue code {
  white-space: pre-wrap;
}

div.tktComments {
  width: 100%;
  margin: 30px 0px 10px 0px;
}

div.tktComment {
}

div.tktCommentHeader {
  border: 1px solid #ccc;
  background-color: #f8f8f8;
  padding: 10px 10px;
  margin-bottom: 10px;
}

span.tktCommentLogin {
  display: inline-block;
  font-weight: 700;
  color: #002060;
}

div.tktCommentBody {
  margin: 10px 40px 30px;
}


/* User setup table
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
td.usetupEditLabel {
  font-weight: 700;
}


/* Utilities
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.full-width {
  width: 100%;
  box-sizing: border-box;
}

.max-full-width {
  max-width: 100%;
  box-sizing: border-box;
}

.pull-right {
  float: right;
}

.pull-left {
  float: left;
}

/* Clearing
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.container:after,
.mainmenu:after,
.row:after,
.u-cf {
  content: "";
  display: table;
  clear: both;
}

body.forum .forumPosts.fileage a:visited {
  color: #648999;
}
Added skins/blitz/details.txt.




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timeline-arrowheads:        0
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           0
Added skins/blitz/dir.png.

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Added skins/blitz/file.png.

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Added skins/blitz/footer.txt.










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  </div> <!-- end div container -->
</div> <!-- end div middle max-full-width -->
<footer>
  <div class="container">
    <div class="pull-right">
      <a href="https://www.fossil-scm.org/">Fossil $release_version $manifest_version $manifest_date</a>
    </div>
    This page was generated in about <th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s
  </div>
</footer>
Added skins/blitz/fossil_100.png.

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Added skins/blitz/fossil_80_reversed_darkcyan.png.

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Added skins/blitz/fossil_80_reversed_darkcyan_text.png.

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Added skins/blitz/header.txt.
















































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<header>
  <div class="container">

    <!-- Header -->
    <div class="login pull-right">
      <th1>
        if {[info exists login]} {
          html "<b>$login</b> — <a class='button' href='$home/login'>Logout</a>\n"
        } else {
          html "<a class='button' href='$home/login'>Login</a>\n"
        }
      </th1>
    </div>
    <div class='logo'>
      <h1>$<project_name>
      <th1>
      if {[anycap jor]} {
        html "<a class='rss' href='$home/timeline.rss'></a>"
      }
      </th1>
      <small> &nbsp;$<title></small></h1>
    </div>

    <!-- Main Menu -->
    <nav class="mainmenu" title="Main Menu">
      <ul>
        <th1>
          html "<li><a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a></li>\n"
          builtin_request_js hbmenu.js
          set once 1
          foreach {name url expr class} $mainmenu {
            if {![capexpr $expr]} continue
            if {$once && [string match $url\[/?#\]* /$current_page/]} {
              set class "active $class"
              set once 0
            }
            html "<li class='$class'>"
            if {[string match /* $url]} {set url $home$url}
            html "<a href='$url'>$name</a></li>\n"
          }
        </th1>
      </ul>
    </nav>
    <nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
  </div> <!-- end div container -->
</header>
<div class="middle max-full-width">
  <div class="container">
Added skins/blitz/rss_20.png.

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Added skins/blitz/ticket.txt.



















































































































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<h4>$<title></h4>
<table class="tktDsp">
<tr><td class="tktDspLabel">Ticket&nbsp;Hash</td>
<th1>
if {[info exists tkt_uuid]} {
  if {[hascap s]} {
    html "<td class='tktDspValue' colspan='3'>$tkt_uuid "
    html "($tkt_id)</td></tr>\n"
  } else {
    html "<td class='tktDspValue' colspan='3'>$tkt_uuid</td></tr>\n"
  }
} else {
  if {[hascap s]} {
    html "<td class='tktDspValue' colspan='3'>Deleted "
    html "(0)</td></tr>\n"
  } else {
    html "<td class='tktDspValue' colspan='3'>Deleted</td></tr>\n"
  }
}
</th1>
<tr><td class="tktDspLabel">Status</td><td class="tktDspValue">
$<status>
</td>
<td class="tktDspLabel">Type</td><td class="tktDspValue">
$<type>
</td></tr>
<tr><td class="tktDspLabel">Severity</td><td class="tktDspValue">
$<severity>
</td>
<td class="tktDspLabel">Priority</td><td class="tktDspValue">
$<priority>
</td></tr>
<tr><td class="tktDspLabel">Subsystem</td><td class="tktDspValue">
$<subsystem>
</td>
<td class="tktDspLabel">Resolution</td><td class="tktDspValue">
$<resolution>
</td></tr>
<tr><td class="tktDspLabel">Last&nbsp;Modified</td><td class="tktDspValue">
<th1>
if {[info exists tkt_datetime]} {
  html $tkt_datetime
}
</th1>
</td>
<th1>enable_output [hascap e]</th1>
  <td class="tktDspLabel">Contact</td><td class="tktDspValue">
  $<private_contact>
  </td>
<th1>enable_output 1</th1>
</tr>
<tr><td class="tktDspLabel">Version&nbsp;Found&nbsp;In</td>
<td colspan="3" valign="top" class="tktDspValue">
$<foundin>
</td></tr>

<th1>
if {[info exists comment]} {
  if {[string length $comment]>10} {
    html {
      <tr>
        <td class="tktDescLabel">Description</td>
        <td class="tktDescValue" colspan="3">
    }
    if {[info exists plaintext]} {
      set r [randhex]
      wiki "<verbatim-$r links>\n$comment\n</verbatim-$r>"
    } else {
      wiki $comment
    }
    html "</td></tr>\n"
  }
}
</th1>
</table>

<div class="tktComments">
<th1>
set seenRow 0
set alwaysPlaintext [info exists plaintext]
query {SELECT datetime(tkt_mtime) AS xdate, login AS xlogin,
              mimetype as xmimetype, icomment AS xcomment,
              username AS xusername
         FROM ticketchng
        WHERE tkt_id=$tkt_id AND length(icomment)>0} {
          if {$seenRow eq "0"} {
            html "<h5>User Comments</h5>\n"
            set seenRow 1
          }
  html "<div class='tktComment'>\n"
  html "<div class='tktCommentHeader'>\n"
  html "<div class='pull-right'>$xdate</div>\n"
  html "<span class='tktCommentLogin'>[htmlize $xlogin]</span>"
  if {$xlogin ne $xusername && [string length $xusername]>0} {
    html " (claiming to be <span class='tktCommentLogin'>[htmlize $xusername]</span>)"
  }
  html " commented</div>\n"
  html "<div class='tktCommentBody'>\n"
  if {$alwaysPlaintext || $xmimetype eq "text/plain"} {
    set r [randhex]
    if {$xmimetype ne "text/plain"} {html "([htmlize $xmimetype])\n"}
    wiki "<verbatim-$r>[string trimright $xcomment]</verbatim-$r>\n"
  } elseif {$xmimetype eq "text/x-fossil-wiki"} {
    wiki "<p>\n[string trimright $xcomment]\n</p>\n"
  } elseif {$xmimetype eq "text/html"} {
    wiki "<p><nowiki>\n[string trimright $xcomment]\n</nowiki></p>\n"
  } else {
    set r [randhex]
    wiki "<verbatim-$r links>[string trimright $xcomment]</verbatim-$r>\n"
  }
  html "</div><!-- end comment body -->\n"
  html "</div><!-- end comment -->\n"
}
</th1>
</div>
Added skins/darkmode/css.txt.































































































































































































































































































































































































































































































































































































































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/* General settings for the entire page */
body {
  margin: 0ex 1ex;
  padding: 0;
  background-color: #1f1f1f;
  color: #ffffffe0;
  font-family: sans-serif;
}

/* The page title centered at the top of each page */
div.title {
  display: table-cell;
  font-size: 2em;
  font-weight: bold;
  text-align: center;
  vertical-align: bottom;
  width: 100%;
}

/* The login status message in the top right-hand corner */
div.status {
  display: table-cell;
  text-align: right;
  vertical-align: bottom;
  color: #ddddddc9;
  font-size: 0.8em;
  font-weight: bold;
  white-space: nowrap;
}
/* The leftoftitle is a <div> to the left of the title <div>
** that contains the same text as the status div.  But we want
** the area to show as blank.  The purpose is to cause the
** title to be exactly centered. */
div.leftoftitle {
  visibility: hidden;
}

/* The header across the top of the page */
header {
  display: table;
  width: 100%;
}

/* The main menu bar that appears at the top of the page beneath
** the header */
nav.mainmenu {
  padding: 0.25em 0.5em;
  font-size: 0.9em;
  font-weight: bold;
  text-align: center;
  border-top-left-radius: 0.5em;
  border-top-right-radius: 0.5em;
  border-bottom: 1px dotted rgba(200,200,200,0.3);
  z-index: 21;  /* just above hbdrop */
}
nav#hbdrop {
  background-color: #1f1f1f;
  border: 2px solid #303536;
  border-radius: 0 0 0.5em 0.5em;
  display: none;
  left: 2em;
  width: calc(100% - 4em);
  position: absolute;
  z-index: 20;  /* just below mainmenu, but above timeline bubbles */
}

nav.mainmenu, div.submenu, div.sectionmenu {
  color: #ffffffcc;
  background-color: #303536/*#0000ff60*/;
}
/* The submenu bar that *sometimes* appears below the main menu */
div.submenu, div.sectionmenu {
  padding: 0.15em 0.5em 0.15em 0;
  font-size: 0.9em;
  text-align: center;
  border-bottom-left-radius: 0.5em;
  border-bottom-right-radius: 0.5em;
}
a, a:visited {
   color: rgba(127, 201, 255, 0.9);
   display: inline;
   text-decoration: none;
}
a:visited {opacity: 0.8}
nav.mainmenu a, div.submenu a,
div.sectionmenu>a.button, div.submenu label,
footer a {
  padding: 0.15em 0.5em;
}
nav.mainmenu a.active {
  border-bottom: 1px solid #FF4500f0;
}
a:hover,
a:visited:hover {
  background-color: #FF4500f0;
  color: rgba(24,24,24,0.8);
  border-radius: 0.1em;
}
.fileage tr:hover,
div.filetreeline:hover {
  background-color: #333;
}
.button,
button {
  color: #aaa;
  background-color: #444;
  border-radius: 5px;
  border: 0
}
.button:hover,
button:hover {
  background-color: #FF4500f0;
  color: rgba(24,24,24,0.8);
  outline: 0
}
input[type=button],
input[type=reset],
input[type=submit] {
  color: #ddd;
  background-color: #446979;
  border: 0;
  border-radius: 5px
}
input[type=button]:hover,
input[type=reset]:hover,
input[type=submit]:hover {
  background-color: #FF4500f0;
  color: rgba(24,24,24,0.8);
  outline: 0
}
input[type=submit]:disabled {
  color: #363636;
  background-color: #707070;
}
.button:focus,
button:focus,
input[type=button]:focus,
input[type=reset]:focus,
input[type=submit]:focus {
  outline: 2px outset #333;
  border-color: #888;
}

/* All page content from the bottom of the menu or submenu down to
** the footer */
div.content {
  padding: 0ex 1ex 1ex 1ex;
}

/* Some pages have section dividers */
div.section {
  margin-bottom: 0;
  margin-top: 1em;
  padding: 0.1em;
  font-size: 1.2em;
  font-weight: bold;
  background-color: #303536/*#0000ff60*/;
  white-space: nowrap;
  border-top-left-radius: 0.5em;
  border-top-right-radius: 0.5em;
  border-bottom: 1px dotted rgba(200,200,200,0.3);
}

/* The "Date" that occurs on the left hand side of timelines */
div.divider {
  background: #303536;
  border: 1px #558195 solid;
  font-size: 1em; font-weight: normal;
  padding: .25em;
  margin: .2em 0 .2em 0;
  float: left;
  clear: left;
  white-space: nowrap;
}

/* The footer at the very bottom of the page */
footer {
  clear: both;
  font-size: 0.8em;
  padding: 0.15em 0.5em;
  text-align: right;
  background-color: #303536/*#0000ff60*/;
  border-top: 1px dotted rgba(200,200,200,0.3);
  border-bottom-left-radius: 0.5em;
  border-bottom-right-radius: 0.5em;
}

/* Hyperlink colors in the footer */

pre {
  border-radius: 0.25em;
}
pre > code {
  display: block;
}
/* verbatim blocks */
pre.verbatim {
  padding: 0.12em;
  white-space: pre-wrap;
}
pre:not(.verbatim) {
  margin-left: 1rem;
  margin-right: 1rem;
  background-color: rgba(200,200,200, 0.1);
  padding: 0.5em 1em;
}

/* The label/value pairs on (for example) the ci page */
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 2ex;
}

h1 {margin: 0.6em 0}
h2 {margin: 0.5em 0}
h3 {margin: 0.5em 0}
h4 {margin: 0.5em 0}
h5 {margin: 0.5em 0}


/**********
td.timelineTime,
tr.timelineBottom td {
  border-bottom: 0
}
table.timelineTable {
  border-spacing: 0.3em 0.3em;
}
table.timelineTable tr td {
  padding: 0.5em 1em;
}
.timelineModernCell[id],
.timelineColumnarCell[id],
.timelineDetailCell[id] {
    background-color: #ffffff40;
}
table.timelineTable tr td:nth-of-type(2) {
  background-color: #ffffffc0;
}
div.tl-canvas {
}
*/

.fossil-tooltip,
.fossil-toast-message {
  background-color: rgba(251, 106, 0, 1);
  border-color: rgba(127, 201, 255, 0.9);
  color: black;
}

/************************************************************************
timeline...
************************************************************************/
table.timelineTable tr:not(.timelineDateRow){
  background-color: #ffffff17;
}
table.timelineTable tr:not(.timelineDateRow):hover{
  background-color: #FF450080;
}
table.timelineTable tr td:first-of-type {
  vertical-align: middle;
  padding: 0.2em 0.5em;
}
div.timelineDate {
  font-weight: 700;
  white-space: nowrap;
  border-radius: 0.2em;
}
td.timelineTime {
  text-align: right;
  white-space: nowrap;
}
td.timelineGraph {
  width: 20px;
  text-align: left;
  border-bottom: 0
}
a.timelineHistLink {
  /*text-transform: lowercase*/
}
span.timelineComment {
  padding: 0 5px
}
.report th,
span.timelineEllipsis {
  cursor: pointer
}
table.timelineTable {
  border-spacing: 0 0.2em;
}
.timelineModernCell, .timelineColumnarCell,
.timelineDetailCell, .timelineCompactCell,
.timelineVerboseCell {
  vertical-align: top;
  text-align: left;
  padding: .75em;
  border-radius: 0.25em;
  background: inherit /*#000*/;
}
.timelineSelected > .timelineColumnarCell,
.timelineSelected > .timelineCompactCell,
.timelineSelected > .timelineDetailCell,
.timelineSelected > .timelineModernCell,
.timelineSelected > .timelineVerboseCell {
  padding: .75em;
  border-radius: 0.2em;
  border: 1px solid #ff8000;
  vertical-align: top;
  text-align: left;
  background: #442800
}

/* Timeline has a blank line at the bottom. Apparently it's to provide the
   graph with a good starting place. Hiding it causes a slight graph
   unsightliness, but we can change its bg color. */
table.timelineTable tr.timelineBottom,
table.timelineTable tr.timelineBottom:hover {
    background: inherit;
}
span.timelineSelected {
  border-radius: 0.2em;
  border: 1px solid #ff8000;
  /*vertical-align: top;
  text-align: left;*/
  background: #442800
}
.timelineSelected {
  background-color: #ffffff40;
}
.timelineSecondary {}
.timelineSecondary > .timelineColumnarCell,
.timelineSecondary > .timelineCompactCell,
.timelineSecondary > .timelineDetailCell,
.timelineSecondary > .timelineModernCell,
.timelineSecondary > .timelineVerboseCell {
  padding: .75em;
  border-radius: 5px;
  border: solid #0080ff;
  /*vertical-align: top;
  text-align: left;*/
  background: #002844
}
span.timelineSecondary {
  border-radius: 5px;
  border: solid #0080ff;
  /*vertical-align: top;
  text-align: left;*/
  background: #002844
}
.timelineCurrent > .timelineColumnarCell,
.timelineCurrent > .timelineCompactCell,
.timelineCurrent > .timelineDetailCell,
.timelineCurrent > .timelineModernCell,
.timelineCurrent > .timelineVerboseCell {
  /*vertical-align: top;
  text-align: left;*/
  padding: .75em;
  border-radius: 5px;
  border: dashed #ff8000
}
.timelineModernCell[id], .timelineColumnarCell[id], .timelineDetailCell[id] {
  background-color: inherit;/*#000*/
}
.tl-canvas {
  margin: 0 6px 0 10px
}
.tl-rail {
  width: 18px
}
.tl-mergeoffset {
  width: 2px
}
.tl-nodemark {
  margin-top: .8em
}
.tl-node {
  width: 10px;
  height: 10px;
  border: 2px solid #bbb;
  background: #111;
  cursor: pointer
}
.tl-node.leaf:after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 4px;
  height: 4px;
  background: #bbb
}
.tl-node.closed-leaf svg {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 10px;
  height: 10px;
  color: #bbb;
}
.tl-node.sel:after {
  content: '';
  position: absolute;
  top: 1px;
  left: 1px;
  width: 8px;
  height: 8px;
  background: #ff8000
}
.tl-arrow {
  width: 0;
  height: 0;
  transform: scale(.999);
  border: 0 solid transparent
}
.tl-arrow.u {
  margin-top: -1px;
  border-width: 0 3px;
  border-bottom: 7px solid
}
.tl-arrow.u.sm {
  border-bottom: 5px solid #bbb
}
.tl-line {
  background: #bbb;
  width: 2px
}
.tl-arrow.merge {
  height: 1px;
  border-width: 2px 0
}
.tl-arrow.merge.l {
  border-right: 3px solid #bbb
}
.tl-arrow.merge.r {
  border-left: 3px solid #bbb
}
.tl-line.merge {
  width: 1px
}
.tl-arrow.cherrypick {
  height: 1px;
  border-width: 2px 0;
}
.tl-arrow.cherrypick.l {
  border-right: 3px solid #bbb;
}
.tl-arrow.cherrypick.r {
  border-left: 3px solid #bbb;
}
.tl-line.cherrypick.h {
  width: 0px;
  border-top: 1px dashed #bbb;
  border-left: 0px dashed #bbb;
  background: rgba(255,255,255,0);
}
.tl-line.cherrypick.v {
  width: 0px;
  border-top: 0px dashed #bbb;
  border-left: 1px dashed #bbb;
  background: rgba(255,255,255,0);
}

/************************************************************************
diffs...
************************************************************************/
td.diffln ins {
  background-color: #559855;
  color: #000;
  text-decoration: none;
}
td.diffln del {
  background-color: #c55;
  color: #000;
  text-decoration: none;
}
td.difftxt del {
  background-color: inherit;
  text-decoration: none;
}
td.difftxt del > del {
  background-color: #c55;
  color: #000;
  text-decoration: none;
}
td.difftxt ins {
  background-color: inherit;
  text-decoration: none;
}
td.difftxt ins > ins {
  background-color: #559855;
  color: #000;
  text-decoration: none;
}
tr.diffskip.jchunk {
  background-color: black;
}
tr.diffskip > td.chunkctrl .jcbutton {
  background-color: #303536;
}

/************************************************************************
************************************************************************/
body.wikiedit #fossil-status-bar,
body.fileedit #fossil-status-bar{
  border-radius: 0.25em 0.25em 0 0;
}
.tab-container > .tabs {
  border-radius: 0.25em;
}

blockquote.file-content {
  margin: 0;
}
blockquote.file-content > pre {
  padding: 0;
}
blockquote.file-content > pre > code {
  padding: 0 0.5em;
}
svg.pikchr {
  /* swap the pikchr svg colors around so they're readable in
     this dark theme. 2020-02: changes in fossil have made this
     obsolete. */
  /*filter: invert(1) hue-rotate(180deg);*/
}
span.snippet>mark {
  color: white;
  font-weight: bold;
}
button,
input,
optgroup,
select,
textarea {
  background: inherit;
  color: inherit;
  font: inherit;
  margin: 0
}
button {
  background-color: rgba(45,45,45,0.75);
}
input, textarea, select {
  border: 1px solid rgba(127, 201, 255, 0.9);
  padding: 1px;
}
select {
  color: #1f1f1f;
  background: #ffffffe0;
}
.capsumOff {
  background-color: #222;
}
.capsumRead {
  background-color: #262;
}
.capsumWrite {
  background-color: #662;
}

body.forum div.forumSel {
    background: inherit;
    border-left-width: 0.5em;
    border-left-style: double;
}

body.forum .debug {
    background-color: #FF4500f0;
    color: rgba(24,24,24,0.8);
}

body.forum .forumPosts.fileage tr:hover {
    background-color: #333;
    color: rgba(24,24,24,0.8);
}
body.forum .forumPosts.fileage tr:hover {
    background-color: #333;
    color: rgba(24,24,24,0.8);
}
body.forum .forumPosts.fileage tr:hover > td:nth-child(1),
body.forum .forumPosts.fileage tr:hover > td:nth-child(3) {
  color: #ffffffe0;
}

body.forum .forumPostBody > div blockquote {
    border: 1px inset;
    padding: 0 0.5em;
}

body.forum .forumPosts.fileage a:visited {
  color: rgba(98, 150, 205, 0.9);
}

body.report table.report tr td { color: black }
body.report table.report a { color: blue }
body.tkt td.tktDspValue { color: black }
body.tkt td.tktDspValue a { color: blue }

body.branch .brlist > table > tbody > tr:hover:not(.selected),
body.branch .brlist > table > tbody > tr.selected {
  background-color: #442800;
}

p.noMoreShun {
  color: #e5e500;
}
Added skins/darkmode/details.txt.




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timeline-arrowheads:        0
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           1
Added skins/darkmode/footer.txt.








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<footer>
  <div class="container">
    <div class="pull-right">
      <a href="https://www.fossil-scm.org/">Fossil $release_version $manifest_version $manifest_date</a>
    </div>
    This page was generated in about <th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s
  </div>
</footer>
Added skins/darkmode/header.txt.































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<header>
  <div class="status leftoftitle"><th1>
   if {[info exists login]} {
     set logintext "<a href='$home/login'>$login</a>\n"
   } else {
     set logintext "<a href='$home/login'>Login</a>\n"
   }
   html $logintext
  </th1></div>
  <div class="title">$<title></div>
  <div class="status"><nobr><th1>
    html $logintext
  </th1></nobr></div>
</header>
<nav class="mainmenu" title="Main Menu">
  <th1>
    html "<a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a>"
    builtin_request_js hbmenu.js
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {
        if {[string match $url\[/?#\]* /$current_page/]} {
          set class "active $class"
        }
        set url $home$url
      }
      html "<a href='$url' class='$class'>$name</a>\n"
    }
  </th1>
</nav>
<nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
Added skins/default/README.md.










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This skin was originally contributed by Étienne Deparis on 2015-02-22,
promoted to the default on 2015-03-14, and subsequently changed by many:

   https://fossil-scm.org/home/finfo/skins/default/css.txt
   https://fossil-scm.org/home/blame?filename=skins/default/css.txt&checkin=trunk

In February 2024, a sufficiently large set of changes were made to the
skin that we forked the old version for the benefit of those who needed
to reference the old one — as when migrating custom skin changes to work
atop the new default — or who simply preferred it.  See ../etienne.
Added skins/default/css.txt.




















































































































































































































































































































































































































































































































































































































































































































































































































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/* Overall page style; vi: filetype=css
 */

body {
  margin: 0 auto;
  background-color: white;
  font-family: sans-serif;
}

a {
  /* Unvisited links are a lightness-adjusted version of this skin's
   * header blue, balancing contrast between the body text and the
   * background in order to meet the goals specified by the WCAG 2
   * accessbility standard, earning us an "AA" grade according to
   * the calculator result here:
   *
   *   https://webaim.org/resources/linkcontrastchecker/?fcolor=2E2E2E&bcolor=FFFFFF&lcolor=3779BF
   *
   * It is for this same reason that our not-quite-black body text
   * color is the shade of dark gray that it is.  It can't be any
   * lighter and still allow us to meet both targets. */
  color: #3779BF;
  text-decoration: none;
}
a:hover {
  color: #4183C4;
  text-decoration: underline;
}


/* Page title, above menu bars */

.title {
  color: #4183C4;
  float: left;
}
h1.page-title {
  font-size: 1.60em;  /* match content > h1 */
  margin-bottom: 0;   /* div.content top margin suffices */
  display: none;      /* don't use body-area h1 except… */
}
.artifact h1.page-title,
.dir      h1.page-title,
.doc      h1.page-title,
.wiki     h1.page-title {
  display: block;   /* …for potentially long doc titles… */
  color: #444;
}
.artifact .title > .page-title,
.dir      .title > .page-title,
.doc      .title > .page-title,
.wiki     .title > .page-title {
  display: none;   /* …where we suppress the title area h1 instead */
}
.title h1 {
  display: inline;
  font-size: 2.20em;
}
.title h1:after {
  content: " / ";
  color: #777;
  font-weight: normal;
}
.artifact .title h1:after,
.dir      .title h1:after,
.doc      .title h1:after,
.wiki     .title h1:after {
  content: "";    /* hide solidus for docs along with title h1 */
}
.status {
  float: right;
  font-size: 0.8em;
}
div.logo {
  float: left;
  padding-right: 10px;
}
div.logo img {
  max-height: 2em;    /* smaller than title to keep it above the baseline */
}


/* Main menu and optional sub-menu */

.mainmenu {
  clear: both;
  background: #eaeaea linear-gradient(#fafafa, #eaeaea) repeat-x;
  border: 1px solid #eaeaea;
  border-radius: 5px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  z-index: 21;  /* just above hbdrop */
}
.mainmenu a {
  text-decoration: none;
  color: #777;
  border-right: 1px solid #eaeaea;
}
.mainmenu a.active,
.mainmenu a:hover {
  color: #000;
  border-bottom: 2px solid #D26911;
}
nav#hbdrop {
  background-color: white;
  border: 1px solid black;
  border-top: white;
  border-radius: 0 0 0.5em 0.5em;
  display: none;
  font-size: 80%;
  left: 2em;
  width: 90%;
  padding-right: 1em;
  position: absolute;
  z-index: 20;  /* just below mainmenu, but above timeline bubbles */
}

.submenu {
  font-size: 0.8em;
  padding: 10px;
  border-bottom: 1px solid #ccc;
}
.submenu a, .submenu label {
  padding: 10px 11px;
  text-decoration: none;
  color: #777;
}
.submenu label {
  white-space: nowrap;
}
.submenu a:hover, .submenu label:hover {
  padding: 6px 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  color: #000;
}
span.submenuctrl, span.submenuctrl input, select.submenuctrl {
  color: #777;
}
span.submenuctrl {
  white-space: nowrap;
}


/* Main document area; elements common to most pages. */

.content {
  padding: 1ex;
  color: #2e2e2e;   /* justified above in "WCAG 2" comment */
}
.content h1 { font-size: 1.60em; color: #444; }
.content h2 { font-size: 1.45em; color: #444; }
.content h3 { font-size: 1.15em; color: #444; }
.content h4 { font-size: 1.05em; color: #444; }
.content h5 { font-size: 1.00em; color: #444; }

.section {
  font-size: 1em;
  font-weight: bold;
  background-color: #f5f5f5;
  border: 1px solid #d8d8d8;
  border-radius: 3px 3px 0 0;
  padding: 9px 10px 10px;
  margin: 10px 0;
}
.sectionmenu {
  border: 1px solid #d8d8d8;
  border-radius: 0 0 3px 3px;
  border-top: 0;
  margin-top: -10px;
  margin-bottom: 10px;
  padding: 10px;
}
.sectionmenu a {
  display: inline-block;
  margin-right: 1em;
}

hr {
  color: #eee;
}


/* Page footer */

footer {
  border-top: 1px solid #ccc;
  padding: 10px;
  font-size: 0.8em;
  margin-top: 10px;
  color: #ccc;
}

/* Forum */

.forum a:visited {
  color: #6A7F94;
}

div.forumSel {
  animation: 1s linear 0s sel-fade;
  background-color: white;      /* animation end state */
  border-left: 4px solid black; /* after-animation selection indicator */
}
@keyframes sel-fade {
  from { background-color: #cef;  }
    to { background-color: white; }
}

.forum form input {
  margin: 0.5em 0;
}


/* Markdown and Wiki-formatted pages: /wiki, /doc, /file... */

.markdown blockquote, p.blockquote, .sidebar {
  /* Override default.css version with our accent colors.  Background is
   * the solid version of rgba(65, 131, 196, 0.1) on white, needed to
   * avoid tinting pre block backgrounds going "under" them. */
  background-color: #ebf2f9;
  border-left-color: #4183c4;
}
div.sidebar {
  /* Add extra whitespace between sidebar and content, both for spacing
   * and to put a gap between it and any <pre> blocks that happen to run
   * up against it. */
  outline: 1em solid white;
}

/* Mark inline code fragments in the near-universal manner pioneered by
 * Stack Overflow, then picked up by approximately everyone, including
 * us, now.
 *
 * This combinatorial selector explosion results from a need to apply
 * these stylings inside multiple page container types, multiplied by
 * the surprisingly large number of tags HTML defines for semantically
 * differentiated monospaced inline markup.  If we do not target the
 * elements we want to affect carefully, we'll end up overreaching,
 * styling Fossil UI elements that use these tags for local purposes.
 *
 * HTML generated and emitted by Fossil UI does not always fall under
 * the skin's generic rules; we must avoid intruding on its domain.
 * Our limited intent here is to style user content only, where it is
 * unreasonable to expect its author to take the time to hand-craft
 * per-document styling.  Contrast Fossil UI, which often does exactly
 * that in order to get particular results.
 *
 * Its rough equivalent in Sass syntax is far more compact, thus clearer:
 * 
 * .artifact, .dir, .doc, .forum, .wiki        // the page types we target
 *   > .content                                // hands off header & footer
 *     &, > .fossil-doc, > .markdown           // wiki, HTML & MD emb docs
 *       > p                                   // in top-level paras only
 *         > code, > kbd, > samp, > tt, > var  // monospaced tag types
 *           background-color: #f4f4f4         // pale gray box which…
 *           padding: 0 4px                    // …extends around the sides
 *
 * We then need something similar for the block-level pre elements.
 *
 * The CSS below is based on feeding that Sass code through this:
 *
 *   $ sassc code.sass | sed -e 's/, /,\n/g'
 *
 * …then hand-cleansing it to make it _somewhat_ more understandable.
 * That largely amounts to whitespace tweaks, but we've also done things
 * like trim back the forum-specific styling to apply to the default MD
 * markup only; direct HTML formatting isn't even an option there, and
 * while wiki markup _is_ supported, MD was the default from day 1.
 * Another quirk of the forum post handling is that the .markdown class
 * gets applied per-post, not up at the top level as with the wiki,
 * embedded docs, etc.
 */
.artifact > .content               > p > code,
.artifact > .content               > p > kbd,
.artifact > .content               > p > samp,
.artifact > .content               > p > tt,
.artifact > .content               > p > var,
.artifact > .content > .fossil-doc > p > code,
.artifact > .content > .fossil-doc > p > kbd,
.artifact > .content > .fossil-doc > p > samp,
.artifact > .content > .fossil-doc > p > tt,
.artifact > .content > .fossil-doc > p > var,
.artifact > .content > .markdown   > p > code,
.artifact > .content > .markdown   > p > kbd,
.artifact > .content > .markdown   > p > samp,
.artifact > .content > .markdown   > p > tt,
.artifact > .content > .markdown   > p > var,
.dir      > .content               > p > code,
.dir      > .content               > p > kbd,
.dir      > .content               > p > samp,
.dir      > .content               > p > tt,
.dir      > .content               > p > var,
.dir      > .content > .fossil-doc > p > code,
.dir      > .content > .fossil-doc > p > kbd,
.dir      > .content > .fossil-doc > p > samp,
.dir      > .content > .fossil-doc > p > tt,
.dir      > .content > .fossil-doc > p > var,
.dir      > .content > .markdown   > p > code,
.dir      > .content > .markdown   > p > kbd,
.dir      > .content > .markdown   > p > samp,
.dir      > .content > .markdown   > p > tt,
.dir      > .content > .markdown   > p > var,
.doc      > .content               > p > code,
.doc      > .content               > p > kbd,
.doc      > .content               > p > samp,
.doc      > .content               > p > tt,
.doc      > .content               > p > var,
.doc      > .content > .fossil-doc > p > code,
.doc      > .content > .fossil-doc > p > kbd,
.doc      > .content > .fossil-doc > p > samp,
.doc      > .content > .fossil-doc > p > tt,
.doc      > .content > .fossil-doc > p > var,
.doc      > .content > .markdown   > p > code,
.doc      > .content > .markdown   > p > kbd,
.doc      > .content > .markdown   > p > samp,
.doc      > .content > .markdown   > p > tt,
.doc      > .content > .markdown   > p > var,
.forum    > .content   .markdown   > p > code,
.forum    > .content   .markdown   > p > kbd,
.forum    > .content   .markdown   > p > samp,
.forum    > .content   .markdown   > p > tt,
.forum    > .content   .markdown   > p > var,
.wiki     > .content               > p > code,
.wiki     > .content               > p > kbd,
.wiki     > .content               > p > samp,
.wiki     > .content               > p > tt,
.wiki     > .content               > p > var,
.wiki     > .content > .fossil-doc > p > code,
.wiki     > .content > .fossil-doc > p > kbd,
.wiki     > .content > .fossil-doc > p > samp,
.wiki     > .content > .fossil-doc > p > tt,
.wiki     > .content > .fossil-doc > p > var,
.wiki     > .content > .markdown   > p > code,
.wiki     > .content > .markdown   > p > kbd,
.wiki     > .content > .markdown   > p > samp,
.wiki     > .content > .markdown   > p > tt,
.wiki     > .content > .markdown   > p > var,
.artifact > .content               > pre,
.artifact > .content > .fossil-doc > pre,
.artifact > .content > .markdown   > pre,
.dir      > .content               > pre,
.dir      > .content > .fossil-doc > pre,
.dir      > .content > .markdown   > pre,
.doc      > .content               > pre,
.doc      > .content > .fossil-doc > pre,
.doc      > .content > .markdown   > pre,
.forum    > .content   .markdown   > pre,
.wiki     > .content               > pre,
.wiki     > .content > .fossil-doc > pre,
.wiki     > .content > .markdown   > pre {
  background-color: #f4f4f4;
  padding: 0 4px;
}
.content pre, table.numbered-lines > tbody > tr {
  hyphens: none;
  line-height: 1.25;
}

.content ul:not(.browser) li {
  list-style-type: disc;
}
div.filetree ul li.dir,
div.filetree ul li.subdir,
div.filetree ul li.file{
  list-style-type: none;
}

.artifact > .content table,
.dir      > .content table,
.doc      > .content table,
.wiki     > .content table {
  background-color: #f0f5f9;
  border: 1px solid #a7c2dc;
  border-radius: 0.5em;
  border-spacing: 0;
  padding: 6px;
}
.artifact > .content th,
.dir      > .content th,
.doc      > .content th,
.wiki     > .content th {
  border-bottom: 1px solid #dee8f2;
  padding-bottom: 4px;
  padding-right: 6px;
}
.artifact > .content tr > th,
.dir      > .content tr > th,
.doc      > .content tr > th,
.wiki     > .content tr > th {
  background-color: #dee8f0;
}
.artifact > .content tr:nth-child(odd),
.dir      > .content tr:nth-child(odd),
.doc      > .content tr:nth-child(odd),
.wiki     > .content tr:nth-child(odd) {
  background-color: #e0e8ee;
}
.artifact > .content td,
.dir      > .content td,
.doc      > .content td,
.wiki     > .content td {
  padding-bottom: 4px;
  padding-right: 6px;
}
th {
  /* Special rule at high level to override default centering of table
     header cell text.  If it isn't at this level, it can't be
     overridden in the HTML, as by the MD table generator's handling
     of `:` alignment markers. */
  text-align: left;
}

/* Wiki adjustments */
pre.verbatim {
  /* keep code examples from crashing into sidebars, etc. */
  white-space: pre-wrap;  
}
textarea.wikiedit {
  /* Monospace fonts tend to have smaller x-heights; compensate.
   * Can't do this generally because not all fonts have this problem.
   * A textarea stands alone, whereas inline <code> has to work with
   * the browser's choice of sans-serif proportional font. */
  font-size: 1.1em;  
}


/* Tickets */

table.report {
  cursor: auto;
  border: 1px solid #ccc;
  border-radius: 0.5em;
  margin: 1em 0;
}
.report td, .report th {
 border: 0;
 font-size: .8em;
 padding: 10px;
}
.report td:first-child {
  border-top-left-radius: 5px;
}
.report tbody tr:last-child td:first-child {
  border-bottom-left-radius: 5px;
}
.report td:last-child {
  border-top-right-radius: 5px;
}
.report tbody tr:last-child {
  border-bottom-left-radius: 5px;
  border-bottom-right-radius: 5px;
}
.report tbody tr:last-child td:last-child {
  border-bottom-right-radius: 5px;
}
.report th {
  cursor: pointer;
}
.report thead+tbody tr:hover {
  background-color: #f5f9fc !important;
}

td.tktDspLabel {
  width: 70px;
  text-align: right;
  overflow: hidden;
}
td.tktDspValue {
  text-align: left;
  vertical-align: top;
  background-color: #f8f8f8;
  border: 1px solid #ccc;
}
td.tktDspValue pre {
  white-space: pre-wrap;
}


/* Timeline */

span.timelineDetail {
  font-size: 90%;
}
div.timelineDate {
  font-weight: bold;
  white-space: nowrap;
}

/* Extend default.css comment cell rounding to the whole row for the
 * various types of "selected" rows, making them "hang" into the left
 * margin, distinguishing them from the coloring used for branch cells.
 * Care must be taken to avoid having the box-shadow rounded but the
 * background squared-off. */
table.timelineTable {
  padding: 0 3px;  /* leave space to sides for box shadow; can clip otherwise */
}
table.timelineTable tr {
  border-radius: 1em;
}
tr.timelineSelected, tr.timelineSecondary { background-color: unset; }
tr.timelineSelected  td, span.timelineSelected {
  background-color: #fbe8d5;
}
tr.timelineSecondary td, span.timelineSecondary {
  background-color: #d5e8fb;
}
tr.timelineCurrent   td:first-child,
tr.timelineSecondary td:first-child,
tr.timelineSelected  td:first-child {
  border-top-left-radius:    1em;
  border-bottom-left-radius: 1em;
}
tr.timelineCurrent   td:last-child,
tr.timelineSecondary td:last-child,
tr.timelineSelected  td:last-child {
  border-top-right-radius:    1em;
  border-bottom-right-radius: 1em;
}
tr.timelineCurrent td {
  border-top:    1px dashed #446979;
  border-bottom: 1px dashed #446979;
}
tr.timelineCurrent td:first-child {
  border-left:   1px dashed #446979;
}
tr.timelineCurrent td:last-child {
  border-right:  1px dashed #446979;
}


/* Miscellaneous UI elements */

.fossil-tooltip.help-buttonlet-content {
  background-color: lightyellow;
}


/* Exceptions for specific screen sizes */

@media screen and (max-width: 600px) {
  /* Spacing for mobile */
  body {
    padding-left: 4px;
    padding-right: 4px;
  }
  .content {
    font-size: 0.9em;
  }
  .title {
    padding-top: 0px;
    padding-bottom: 0px;
  }
  .title > .page-title {
    display: inline;    /* show page titles above menu bar… */
  }
  .artifact .title > .page-title,
  .dir      .title > .page-title,
  .doc      .title > .page-title,
  .wiki     .title > .page-title {
    display: none;     /* …except for docs, where it may force wrapping */
  }
  .status {padding-top: 0px;}
  .mainmenu a {
    padding: 8px 10px;
  }
  .mainmenu {
    padding: 10px;
  }
}
@media screen and (min-width: 600px) {
  /* Spacing for desktop */
  body {
    padding-left: 20px;
    padding-right: 20px;
  }
  .title {
    padding-top: 10px;
    padding-bottom: 10px;
  }
  span.page-title {
    font-size: 18px;
  }
  div.logo {
    padding-top: 10px;
  }
  .status {padding-top: 30px;}
  .mainmenu a {
    padding: 8px 20px;
  }
  .mainmenu {
    padding: 10px;
  }

  /* Wide screens mean long lines.  Add extra leading to give the eye a
   * "gutter" to follow from the end of one to the start of the next. */
  .content dd,
  .content dt,
  .content div,
  .content li,
  .content p,
  .content table {
    line-height: 1.4em;
  }

  /* This horror show has the same cause that informed our handling of
   * <code> and friends above; see "combinatorial selector explosion."
   * Without this careful targeting, we'd not only overreach into areas
   * of Fossil UI where our meddling is not wanted, we would mistakenly
   * apply double indents to nested formatting in MD forum posts, p
   * within td tags, and more.
   *
   * Rather than give the equivalent Sass code here, see the SCSS file
   * that the [Inskinerator](https://tangentsoft.com/inskinerator/)
   * project ships as override/modern/media.scss.  Rendering that
   * through sassc gives substantially identical output, modulo the
   * hand-polishing we've done here. */
  .artifact > .content               > p,
  .artifact > .content > .markdown   > p,
  .artifact > .content > .fossil-doc > p,
  .artifact > .content               > ol, .artifact > .content               > ul,
  .artifact > .content > .markdown   > ol, .artifact > .content > .markdown   > ul,
  .artifact > .content > .fossil-doc > ol, .artifact > .content > .fossil-doc > ul,
  .artifact > .content               > table,
  .artifact > .content > .markdown   > table,
  .artifact > .content > .fossil-doc > table,
  .dir      > .content               > p,
  .dir      > .content > .markdown   > p,
  .dir      > .content > .fossil-doc > p,
  .dir      > .content               > ol, .dir > .content               > ul,
  .dir      > .content > .markdown   > ol, .dir > .content > .markdown   > ul,
  .dir      > .content > .fossil-doc > ol, .dir > .content > .fossil-doc > ul,
  .dir      > .content               > table,
  .dir      > .content > .markdown   > table,
  .dir      > .content > .fossil-doc > table,
  .doc      > .content               > p,
  .doc      > .content > .markdown   > p,
  .doc      > .content > .fossil-doc > p,
  .doc      > .content               > ol, .doc > .content               > ul,
  .doc      > .content > .markdown   > ol, .doc > .content > .markdown   > ul,
  .doc      > .content > .fossil-doc > ol, .doc > .content > .fossil-doc > ul,
  .doc      > .content               > table,
  .doc      > .content > .markdown   > table,
  .doc      > .content > .fossil-doc > table,
  .wiki     > .content               > p,
  .wiki     > .content > .markdown   > p,
  .wiki     > .content > .fossil-doc > p,
  .wiki     > .content               > ol, .wiki > .content               > ul,
  .wiki     > .content > .markdown   > ol, .wiki > .content > .markdown   > ul,
  .wiki     > .content > .fossil-doc > ol, .wiki > .content > .fossil-doc > ul,
  .wiki     > .content               > table,
  .wiki     > .content > .markdown   > table,
  .wiki     > .content > .fossil-doc > table,
  #fileedit-tab-preview-wrapper > p,
  #fileedit-tab-preview-wrapper > ol,
  #fileedit-tab-preview-wrapper > ul,
  #fileedit-tab-preview-wrapper > table,
  #fileedit-tab-preview-wrapper > .markdown > p,
  #fileedit-tab-preview-wrapper > .markdown > ol,
  #fileedit-tab-preview-wrapper > .markdown > ul,
  #fileedit-tab-preview-wrapper > .markdown > table,
  #wikiedit-tab-preview-wrapper > p,
  #wikiedit-tab-preview-wrapper > ol,
  #wikiedit-tab-preview-wrapper > ul,
  #wikiedit-tab-preview-wrapper > table,
  #wikiedit-tab-preview-wrapper > .markdown > p,
  #wikiedit-tab-preview-wrapper > .markdown > ol,
  #wikiedit-tab-preview-wrapper > .markdown > ul,
  #wikiedit-tab-preview-wrapper > .markdown > table {
    margin-left:  50pt;
    margin-right: 50pt;
  }

  /* Code blocks get extra indenting.  We need a selector explosion
   * equally powerful to the one above for inline <code> fragments and
   * similar elements, for essentially the same reason: Fossil UI also
   * uses <pre>, and we want to affect user content only.
   *
   * The equivalent Sass code is:
   *
   *   .artifact, .dir, .doc, .wiki       // doc types we target
   *     > .content                       // hands off header & footer
   *       @import 'pre-doc-margins.sass'
   *
   *   #fileedit-tab-preview-wrapper,     // include /fileedit previews
   *   #wikiedit-tab-preview-wrapper      // ditto /wikiedit
   *     @import 'pre-doc-margins.sass'
   * 
   * …where pre-doc-margins.sass contains the elements common to both:
   * 
   *   &, > .fossil-doc, > .markdown      // wiki, HTML & MD doc types
   *     > pre                            // direct pre descendants only
   *       margin-left: 70pt;
   *       margin-right: 50pt;
   *
   * This is a technical overreach since /wiki & /wikiedit lack support
   * for Fossil's HTML embedded doc markup capability, but we prefer to
   * draw the /fileedit parallel in our Sass example over the dubious
   * pleasure of being nit-picky on this point.  Instead, we've chosen
   * to back that overreach out by hand below.
   */
  .artifact > .content               > pre,
  .artifact > .content > .fossil-doc > pre,
  .artifact > .content > .markdown   > pre,
  .dir      > .content               > pre,
  .dir      > .content > .fossil-doc > pre,
  .dir      > .content > .markdown   > pre,
  .doc      > .content               > pre,
  .doc      > .content > .fossil-doc > pre,
  .doc      > .content > .markdown   > pre,
  .wiki     > .content               > pre,
  .wiki     > .content > .markdown   > pre {
    margin-left:  70pt;
    margin-right: 50pt;
  }
  #fileedit-tab-preview-wrapper               > pre,
  #wikiedit-tab-preview-wrapper               > pre,
  #fileedit-tab-preview-wrapper > .fossil-doc > pre,
  #fileedit-tab-preview-wrapper > .markdown   > pre,
  #wikiedit-tab-preview-wrapper > .markdown   > pre {
    margin-left:  70pt;
    margin-right: 50pt;
  }
  .forum > .content .markdown > pre {
    margin-left: 20pt;  /* special case for MD in forum; need less indent */
  }

  /* Fossil UI uses these, but in sufficiently constrained ways that we
   * don't have to be nearly as careful to avoid an overreach. */
  .doc > .content h1, .artifact .content h1, .dir .content h1, .fileedit .content h1, .wiki .content h1 { margin-left: 10pt; }
  .doc > .content h2, .artifact .content h2, .dir .content h2, .fileedit .content h2, .wiki .content h2 { margin-left: 20pt; }
  .doc > .content h3, .artifact .content h3, .dir .content h3, .fileedit .content h3, .wiki .content h3 { margin-left: 30pt; }
  .doc > .content h4, .artifact .content h4, .dir .content h4, .fileedit .content h4, .wiki .content h4 { margin-left: 40pt; }
  .doc > .content h5, .artifact .content h5, .dir .content h5, .fileedit .content h5, .wiki .content h5 { margin-left: 50pt; }
  .doc > .content hr, .artifact .content hr, .dir .content hr, .fileedit .content hr, .wiki .content hr { margin-left: 10pt; }

  /* Don't need to be nearly as careful with tags Fossil UI doesn't use. */
  .doc dd, .artifact dd, .dir dd, .fileedit dd, .wikiedit dd { margin-left: 30pt; margin-bottom: 1em; }
  .doc dl, .artifact dl, .dir dl, .fileedit dl, .wikiedit dl { margin-left: 60pt; }
  .doc dt, .artifact dt, .dir dt, .fileedit dt, .wikiedit dt { margin-left: 10pt; }

  /* Fossil UI doesn't use Pikchr at all (yet?) so we can be quite loose
   * with these selectors. */
  .content .pikchr-wrapper { margin-left: 70pt; }
  div.pikchr-wrapper.indent:not(.source) {
    /* Selector naming scheme mismatch is intentional: it must match the
     * way it's given in default.css exactly if it is to override it. */
    margin-left: 70pt;
    margin-right: 50pt;
  }
  div.pikchr-wrapper.center:not(.source),
  div.pikchr-wrapper.float-right:not(.source) {
    margin-left: 0;
  }

  /* Special treatment for backward compatibility. */
  .indent,                /* clean alternative to misusing <blockquote> */
  .artifact > .content > blockquote:not(.file-content),
  .dir      > .content > blockquote,
  .doc      > .content > blockquote,
  .fileedit > .content > blockquote,
  .wiki     > .content > blockquote {
    /* We must apply extra indent relative to "p" since Fossil's wiki
     * generator misuses the blockquote tag against HTML and MD norms
     * to mean "indented paragraph."  Skip it for file content retrieved
     * by /dir URLs. */
    margin-left: 80pt;
  }
  .artifact > .content > .markdown > blockquote,
  .dir      > .content > .markdown > blockquote,
  .doc      > .content > .markdown > blockquote,
  .fileedit > .content > .markdown > blockquote,
  .wiki     > .content > .markdown > blockquote {
    /* Fossil MD didn't inherit that bug; its HTML generator emits
     * blockquote tags only for _block quotes_!  A moderate indent
     * suffices due to the visual styling applied above. */
    margin-left: 60pt;
  }

  /* Alternative to BLOCK.indent when wrapped in something that is
   * itself indented.  The value is the delta between p and blockquote
   * above, expressed as padding instead of margin so it adds to the
   * outer margin instead of forcing the browser into picking one. */
  .local-indent {
    padding-left: 30pt;
  }
}
Added skins/default/details.txt.






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pikchr-fontscale:           "0.9"
pikchr-scale:               "1.1"
timeline-arrowheads:        1
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           0
Added skins/default/footer.txt.





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<footer>
This page was generated in about
<th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s by
Fossil $release_version $manifest_version $manifest_date
</footer>
Added skins/default/header.txt.



































































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<header>
  <div class="logo">
    <th1>
    ## See skins/original/header.txt for commentary; not repeated here.
    proc getLogoUrl { baseurl } {
      set idx(first) [string first // $baseurl]
      if {$idx(first) != -1} {
        set idx(first+1) [expr {$idx(first) + 2}]
        set idx(nextRange) [string range $baseurl $idx(first+1) end]
        set idx(next) [string first / $idx(nextRange)]
        if {$idx(next) != -1} {
          set idx(next) [expr {$idx(next) + $idx(first+1)}]
          set idx(next-1) [expr {$idx(next) - 1}]
          set scheme [string range $baseurl 0 $idx(first)]
          set host [string range $baseurl $idx(first+1) $idx(next-1)]
          if {[string compare $scheme http:/] == 0} {
            set scheme http://
          } else {
            set scheme https://
          }
          set logourl $scheme$host/
        } else {
          set logourl $baseurl
        }
      } else {
        set logourl $baseurl
      }
      return $logourl
    }
    set logourl [getLogoUrl $baseurl]
    </th1>
    <a href="$logourl">
      <img src="$logo_image_url" border="0" alt="$project_name">
    </a>
  </div>
  <div class="title">
    <h1>$<project_name></h1>
    <span class="page-title">$<title></span>
  </div>
  <div class="status">
    <th1>
      if {[info exists login]} {
        html "<a href='$home/login'>$login</a>\n"
      } else {
        html "<a href='$home/login'>Login</a>\n"
      }
    </th1>
  </div>
</header>
<nav class="mainmenu" title="Main Menu">
  <th1>
    html "<a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a>"
    builtin_request_js hbmenu.js
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {
        if {[string match $url\[/?#\]* /$current_page/]} {
          set class "active $class"
        }
        set url $home$url
      }
      html "<a href='$url' class='$class'>$name</a>\n"
    }
  </th1>
</nav>
<nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
<h1 class="page-title">$<title></h1>
Added skins/eagle/README.md.




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For this skin to look exactly as it was intended to, the **white-foreground**
setting should be enabled.

This skin was contributed by Joe Mistachkin.
Added skins/eagle/css.txt.












































































































































































































































































































































































































































































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/* General settings for the entire page */
body {
  margin: 0ex 1ex;
  padding: 0px;
  background-color: #485D7B;
  font-family: sans-serif;
  color: white;
}

/* The project logo in the upper left-hand corner of each page */
div.logo {
  display: table-cell;
  text-align: center;
  vertical-align: bottom;
  font-weight: bold;
  color: white;
  min-width: 50px;
  white-space: nowrap;
  position: relative;
  filter: drop-shadow(2px 4px 6px rgba(0,0,0,0.75));
  top: 0.5em;
  right: -0.5em;
}
div.logo img{
  border-radius: 2mm;
}

/* The page title centered at the top of each page */
div.title {
  display: table-cell;
  font-size: 2em;
  font-weight: bold;
  text-align: left;
  padding: 0 0 0 1em;
  color: white;
  vertical-align: bottom;
  width: 100%;
}

/* The login status message in the top right-hand corner */
div.status {
  display: table-cell;
  text-align: right;
  vertical-align: bottom;
  color: white;
  font-size: 0.8em;
  font-weight: bold;
  white-space: nowrap;
}

/* The header across the top of the page */
header {
  display: table;
  width: 100%;
}

/* The main menu bar that appears at the top of the page beneath
** the header */
nav.mainmenu {
  padding: 5px 10px 5px 10px;
  font-size: 0.9em;
  font-weight: bold;
  text-align: center;
  letter-spacing: 1px;
  background-color: #76869D;
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
  color: white;
}

nav#hbdrop {
  background-color: #485D7B;
  border-radius: 0 0 15px 15px;
  border-left: 0.5em solid #76869d;
  border-bottom: 1.2em solid #76869d;
  display: none;
  width: 98%;
  position: absolute;
  z-index: 20;
}


/* The submenu bar that *sometimes* appears below the main menu */
div.submenu, div.sectionmenu {
  padding: 3px 10px 3px 0px;
  font-size: 0.9em;
  font-weight: bold;
  text-align: center;
  background-color: #485D7B;
  color: white;
}
nav.mainmenu a, nav.mainmenu a:visited, div.submenu a, div.submenu a:visited,
div.sectionmenu>a.button:link, div.sectionmenu>a.button:visited,
div.submenu label {
  padding: 3px 10px 3px 10px;
  color: white;
  text-decoration: none;
}
nav.mainmenu a:hover, div.submenu a:hover, div.sectionmenu>a.button:hover,
div.submenu label:hover {
  text-decoration: underline;
}

/* All page content from the bottom of the menu or submenu down to
** the footer */
div.content {
  padding: 0ex 1ex 0ex 2ex;
}

/* Some pages have section dividers */
div.section {
  margin-bottom: 0px;
  margin-top: 1em;
  padding: 1px 1px 1px 1px;
  font-size: 1.2em;
  font-weight: bold;
  background-color: #485D7B;
  color: white;
  white-space: nowrap;
}

/* The "Date" that occurs on the left hand side of timelines */
div.divider {
  background: #9DB0CC;
  color: white;
  border: 2px white solid;
  font-size: 1em; font-weight: normal;
  padding: .25em;
  margin: .2em 0 .2em 0;
  float: left;
  clear: left;
  white-space: nowrap;
}

/* The footer at the very bottom of the page */
footer {
  clear: both;
  font-size: 0.8em;
  margin-top: 12px;
  padding: 5px 10px 5px 10px;
  text-align: right;
  background-color: #485D7B;
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
  color: white;
}

/* Hyperlink colors in the footer */
a { color: white; }
a:link { color: white; }
a:visited { color: white; }
a:hover { color: #9DB0CC; }

/* verbatim blocks */
pre.verbatim {
  background-color: #485D7B;
  color: white;
  padding: 0.5em;
  white-space: pre-wrap;
}

/* The label/value pairs on (for example) the ci page */
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 2ex;
}

/* The nomenclature sidebox for branches,.. */
div.sidebox {
  float: right;
  background-color: #485D7B;
  border-width: medium;
  border-style: double;
  margin: 10px;
}

/* the format for the timeline data table */
table.timelineTable {
  cellspacing: 0;
  border: 0;
  cellpadding: 0;
  font-family: "courier new";
  border-spacing: 0px 2px;
  // border-collapse: collapse;
}

.timelineSelected {
  background-color: #7EA2D9;
}
.timelineSecondary {
  background-color: #7EA27E;
}

/* commit node */
.tl-node {
  width: 10px;
  height: 10px;
  border: 1px solid #fff;
  background: #485D7B;
  cursor: pointer;
}

/* leaf commit marker */
.tl-node.leaf:after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 4px;
  height: 4px;
  background: #fff;
}

/* closed leaf commit marker */
.tl-node.closed-leaf svg {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 10px;
  height: 10px;
  color: #fff;
}

/* up arrow */
.tl-arrow.u {
  margin-top: -1px;
  border-width: 0 3px;
  border-bottom: 7px solid #fff;
}

/* small up arrow */
.tl-arrow.u.sm {
  border-bottom: 5px solid #fff;
}

/* line */
.tl-line {
  background: #fff;
  width: 2px;
}

/* left merge arrow */
.tl-arrow.merge.l {
  border-right: 3px solid #fff;
}

/* right merge arrow */
.tl-arrow.merge.r {
  border-left: 3px solid #fff;
}

.tl-arrow.cherrypick {
  height: 1px;
  border-width: 2px 0;
}
.tl-arrow.cherrypick.l {
  border-right: 3px solid #fff;
}
.tl-arrow.cherrypick.r {
  border-left: 3px solid #fff;
}
.tl-line.cherrypick.h {
  width: 0px;
  border-top: 1px dashed #fff;
  border-left: 0px dashed #fff;
  background: rgba(255,255,255,0);
}
.tl-line.cherrypick.v {
  width: 0px;
  border-top: 0px dashed #fff;
  border-left: 1px dashed #fff;
  background: rgba(255,255,255,0);
}


/* Side-by-side diff */
table.splitdiff {
  background-color: #485D7B;
  font-family: fixed, Dejavu Sans Mono, Monaco, Lucida Console, monospace;
  font-size: 8pt;
  border-collapse:collapse;
  white-space: pre;
  border: 1px #000 dashed;
  margin-left: auto;
  margin-right: auto;
}

/* format for the layout table, used for the captcha display */
table.captcha {
  margin: auto;
  padding: 10px;
  border-width: 4px;
  border-style: double;
  border-color: white;
}

/* format for the user list table on the user setup page */
table.usetupUserList {
  outline-style: double;
  outline-width: 1px;
  outline-color: white;
  padding: 10px;
}

/* color for capabilities, inherited by reader */
span.ueditInheritReader {
  color: white;
}

/* format for values on ticket display page */
td.tktDspValue {
  text-align: left;
  vertical-align: top;
  background-color: #485D7B;
}

/* Ticket display on timelines */
td.tktTlOpen {
  color: #ffc0c0;
}
td.tktTlClose {
  color: #c0c0c0;
}

/* format for example table cells on the report edit page */
td.rpteditex {
  border-width: thin;
  border-color: white;
  border-style: solid;
}

/* List of files in a timeline */
ul.filelist {
  margin-top: 3px;
  line-height: 100%;
}

/* side-by-side diff display */
div.splitdiff {
  font-family: monospace;
  font-size: smaller;
  white-space: pre;
}

/* context diff display */
table.udiff {
  font-family: monospace;
  white-space: pre;
}

/* added code in a diff */
td.difftxt ins > ins, td.diffln ins {
  background-color: rgb(100, 200, 100);
}
td.difftxt ins {
  background-color: inherit;
}

/* deleted in a diff */
td.difftxt del > del, td.diffln del {
  background-color: rgb(230, 110, 110);
}
td.difftxt del {
  background-color: inherit;
}
tr.diffskip.jchunk {
  background-color: #7EA2D9;
}
tr.diffskip > td.chunkctrl .jcbutton{
  color: white;
  background-color: #485D7B;
}

.fileage tr:hover {
  background-color:  #7EA2D9;
}

span.modpending {
  color: #c0c0c0;
  font-style: italic;
}
span.forum_author {
  color: white;
  font-size: 75%;
}
span.forum_age {
  color: white;
  font-size: 85%;
}
span.forum_npost {
  color: white;
  font-size: 75%;
}
.debug {
  background-color: #808080;
  border: 2px solid white;
}
div.forumEdit {
  border: 1px solid white;
}
div.forumTimeline {
  border: 1px solid white;
}
div.forumTime {
  border: 1px solid white;
}
div.forumSel {
  background-color: #808080;
}
div.forumObs {
  color: white;
}
body.forum .forumPosts.fileage a:visited {
  color: rgba(176,176,176,1.0);
}

.fileage td {
  font-family: "courier new";
}

div.filetreeline:hover {
  background-color: #7EA2D9;
}

table.numbered-lines td.line-numbers span.selected-line {
  background-color: #7EA2D9;
}

.statistics-report-graph-line {
  border: 2px solid #7EA2D9;
  background-color: #7EA2D9;
}
.statistics-report-graph-extra {
  border: 2px solid #7EA2D9;
  border-left-style: none;
}

.timelineModernCell[id], .timelineColumnarCell[id], .timelineDetailCell[id] {
  background-color: #455978;
}

.capsumOff {
  background-color: #bbbbbb;
}
.capsumRead {
  background-color: #006d00;
}
.capsumWrite {
  background-color: #e5e500;
}

body.branch .brlist > table > tbody > tr:hover:not(.selected),
body.branch .brlist > table > tbody > tr.selected {
  background-color: #7EA2D9;
}

p.noMoreShun {
  color: #e5e500;
}
Added skins/eagle/details.txt.





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timeline-arrowheads:        1
timeline-circle-nodes:      0
timeline-color-graph-lines: 0
white-foreground:           1
pikchr-background:          0x485d7b
Added skins/eagle/footer.txt.
























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<footer>
  <th1>
  proc getTclVersion {} {
    if {[catch {tclEval info patchlevel} tclVersion] == 0} {
      return "<a href=\"https://www.tcl.tk/\">Tcl</a> version $tclVersion"
    }
    return ""
  }
  proc getVersion { version } {
    set length [string length $version]
    return [string range $version 1 [expr {$length - 2}]]
  }
  set version [getVersion $manifest_version]
  set tclVersion [getTclVersion]
  set fossilUrl https://www.fossil-scm.org
  set fossilDate [string range $manifest_date 0 9]T[string range $manifest_date 11 end]
  </th1>
  This page was generated in about
  <th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s by
  <a href="$fossilUrl/">Fossil</a>
  version $release_version $tclVersion
  <a href="$fossilUrl/index.html/info/$version">$manifest_version</a>
  <a href="$fossilUrl/index.html/timeline?c=$fossilDate&amp;y=ci">$manifest_date</a>
</footer>
Added skins/eagle/header.txt.















































































































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<header>
  <div class="logo">
    <th1>
    ##
    ## NOTE: The purpose of this procedure is to take the base URL of the
    ##       Fossil project and return the root of the entire web site using
    ##       the same URI scheme as the base URL (e.g. http or https).
    ##
    proc getLogoUrl { baseurl } {
      set idx(first) [string first // $baseurl]
      if {$idx(first) != -1} {
        ##
        ## NOTE: Skip second slash.
        ##
        set idx(first+1) [expr {$idx(first) + 2}]
        ##
        ## NOTE: (part 1) The [string first] command does NOT actually
        ##       support the optional startIndex argument as specified
        ##       in the TH1 support manual; therefore, we fake it by
        ##       using the [string range] command and then adding the
        ##       necessary offset to the resulting index manually
        ##       (below).  In Tcl, we could use the following instead:
        ##
        ##       set idx(next) [string first / $baseurl $idx(first+1)]
        ##
        set idx(nextRange) [string range $baseurl $idx(first+1) end]
        set idx(next) [string first / $idx(nextRange)]
        if {$idx(next) != -1} {
          ##
          ## NOTE: (part 2) Add the necessary offset to the result of
          ##       the search for the next slash (i.e. the one after
          ##       the initial search for the two slashes).
          ##
          set idx(next) [expr {$idx(next) + $idx(first+1)}]
          ##
          ## NOTE: Back up one character from the next slash.
          ##
          set idx(next-1) [expr {$idx(next) - 1}]
          ##
          ## NOTE: Extract the URI scheme and host from the base URL.
          ##
          set scheme [string range $baseurl 0 $idx(first)]
          set host [string range $baseurl $idx(first+1) $idx(next-1)]
          ##
          ## NOTE: Try to stay in SSL mode if we are there now.
          ##
          if {[string compare $scheme http:/] == 0} {
            set scheme http://
          } else {
            set scheme https://
          }
          set logourl $scheme$host/
        } else {
          set logourl $baseurl
        }
      } else {
        set logourl $baseurl
      }
      return $logourl
    }
    if {1} {
      # Link logo to the top of the current domain
      set logourl [getLogoUrl $baseurl]
    } else {
      # Link logo to the top of the current repo
      set logourl $baseurl
    }
    </th1>
    <a href="$logourl">
      <img src="$logo_image_url" border="0" alt="$project_name">
    </a>
  </div>
  <div class="title">$<title></div>
  <div class="status"><nobr><th1>
     if {[info exists login]} {
       puts "Logged in as $login"
     } else {
       puts "Not logged in"
     }
  </th1></nobr><small><div id="clock"></div></small></div>
</header>
<th1>html "<script nonce='$nonce'>"</th1>
  (function updateClock(){
    var e = document.getElementById("clock");
    if(!e) return;
    if(!updateClock.fmt){
      updateClock.fmt = function(n){
        return n < 10 ? '0' + n : n;
      };
    }
    var d = new Date();
    e.innerHTML = d.getUTCFullYear()+ '-' +
      updateClock.fmt(d.getUTCMonth() + 1) + '-' +
      updateClock.fmt(d.getUTCDate())      + ' ' +
      updateClock.fmt(d.getUTCHours())     + ':' +
      updateClock.fmt(d.getUTCMinutes());
    setTimeout(updateClock,(60-d.getUTCSeconds())*1000);
  })();
</script>
<nav class="mainmenu" title="Main Menu">
  <th1>
    html "<a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a>\n"
    builtin_request_js hbmenu.js
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {set url $home$url}
      html "<a href='$url' class='$class'>$name</a>\n"
    }
  </th1>
</nav>
<nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
Added skins/etienne/README.md.














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This skin was contributed by Étienne Deparis.

It was promoted to the default from 2015-03-14 until February 2024, when
it was forked into this location for use by those who do not want the
large number of changes merged into trunk at that time.  Even if you
agree with us that the changes improve readability, you may prefer to
pack more information onto the screen at the expense of readability.
Other reasons to choose this fork are to migrate custom skin changes to
work atop the new base, or to make a comparative design evaluation.

A bare minimum of changes have been made to this fork, primarily to
allow this skin to render the Fossil documentation in a readable
fashion. The intent is that you be able to toggle between these two
skins at will.
Added skins/etienne/css.txt.






















































































































































































































































































































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/* Overall page style; vi: filetype=css
 */

body {
  margin: 0 auto;
  background-color: white;
  font-family: sans-serif;
  font-size: 14pt;
}

a {
  color: #4183C4;
  text-decoration: none;
}
a:hover {
  color: #4183C4;
  text-decoration: underline;
}


/* Page title, above menu bars */

.title {
  color: #4183C4;
  float: left;
}
.title h1 {
  display: inline;
}
.title h1:after {
  content: " / ";
  color: #777;
  font-weight: normal;
}
.status {
  float: right;
  font-size: 0.7em;
}


/* Main menu and optional sub-menu */

.mainmenu {
  font-size: 0.8em;
  clear: both;
  background: #eaeaea linear-gradient(#fafafa, #eaeaea) repeat-x;
  border: 1px solid #eaeaea;
  border-radius: 5px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  z-index: 21;  /* just above hbdrop */
}
.mainmenu a {
  text-decoration: none;
  color: #777;
  border-right: 1px solid #eaeaea;
}
.mainmenu a.active,
.mainmenu a:hover {
  color: #000;
  border-bottom: 2px solid #D26911;
}
nav#hbdrop {
  background-color: white;
  border: 1px solid black;
  border-top: white;
  border-radius: 0 0 0.5em 0.5em;
  display: none;
  font-size: 80%;
  left: 2em;
  width: 90%;
  padding-right: 1em;
  position: absolute;
  z-index: 20;  /* just below mainmenu, but above timeline bubbles */
}

.submenu {
  font-size: .7em;
  padding: 10px;
  border-bottom: 1px solid #ccc;
}
.submenu a, .submenu label {
  padding: 10px 11px;
  text-decoration: none;
  color: #777;
}
.submenu label {
  white-space: nowrap;
}
.submenu a:hover, .submenu label:hover {
  padding: 6px 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  color: #000;
}
span.submenuctrl, span.submenuctrl input, select.submenuctrl {
  color: #777;
}
span.submenuctrl {
  white-space: nowrap;
}


/* Main document area; elements common to most pages. */

.content {
  padding-top: 10px;
  font-size: 0.8em;
  color: #444;
}
.content blockquote {
  padding: 0 15px;
}
.content h1 {
  font-size: 1.25em;
}
.content h2 {
  font-size: 1.15em;
}
.content h3 {
  font-size: 1.05em;
}

.section {
  font-size: 1em;
  font-weight: bold;
  background-color: #f5f5f5;
  border: 1px solid #d8d8d8;
  border-radius: 3px 3px 0 0;
  padding: 9px 10px 10px;
  margin: 10px 0;
}
.sectionmenu {
  border: 1px solid #d8d8d8;
  border-radius: 0 0 3px 3px;
  border-top: 0;
  margin-top: -10px;
  margin-bottom: 10px;
  padding: 10px;
}
.sectionmenu a {
  display: inline-block;
  margin-right: 1em;
}

hr {
  color: #eee;
}


/* Page footer */

footer {
  border-top: 1px solid #ccc;
  padding: 10px;
  font-size: 0.7em;
  margin-top: 10px;
  color: #ccc;
}

/* Forum */

.forum a:visited {
  color: #6A7F94;
}

.forum blockquote {
  background-color: rgba(65, 131, 196, 0.1);
  border-left: 3px solid #254769;
  padding: .1em 1em;
}


/* Markdown and Wiki-formatted pages: /wiki, /doc, /file... */

.doc > .content table {
  background-color: rgba(0, 0, 0, 0.05);
  border: 1px solid #aaa;
  border-radius: 0.5em;
  border-spacing: 0;
  padding: 6px;
}
.doc > .content th {
  border-bottom: 1px solid #ddd;
  padding-bottom: 4px;
  padding-right: 6px;
  text-align: left;
}
.doc > .content tr > th {
  background-color: #eee;
}
.doc > .content tr:nth-child(odd) {
  background-color: #e8e8e8;
}
.doc > .content td {
  padding-bottom: 4px;
  padding-right: 6px;
  text-align: left;
}


/* Tickets */

table.report {
  cursor: auto;
  border-radius: 5px;
  border: 1px solid #ccc;
  margin: 1em 0;
}
.report td, .report th {
 border: 0;
 font-size: .8em;
 padding: 10px;
}
.report td:first-child {
  border-top-left-radius: 5px;
}
.report tbody tr:last-child td:first-child {
  border-bottom-left-radius: 5px;
}
.report td:last-child {
  border-top-right-radius: 5px;
}
.report tbody tr:last-child {
  border-bottom-left-radius: 5px;
  border-bottom-right-radius: 5px;
}
.report tbody tr:last-child td:last-child {
  border-bottom-right-radius: 5px;
}
.report th {
  cursor: pointer;
}
.report thead+tbody tr:hover {
  background-color: #f5f9fc !important;
}

td.tktDspLabel {
  width: 70px;
  text-align: right;
  overflow: hidden;
}
td.tktDspValue {
  text-align: left;
  vertical-align: top;
  background-color: #f8f8f8;
  border: 1px solid #ccc;
}
td.tktDspValue pre {
  white-space: pre-wrap;
}


/* Timeline */

span.timelineDetail {
  font-size: 90%;
}
div.timelineDate {
  font-weight: bold;
  white-space: nowrap;
}


/* Miscellaneous UI elements */

.fossil-tooltip.help-buttonlet-content {
  background-color: lightyellow;
}


/* Exceptions for specific screen sizes */

@media screen and (max-width: 600px) {
  /* Spacing for mobile */
  body {
    padding-left: 4px;
    padding-right: 4px;
  }
  .title {
    padding-top: 0px;
    padding-bottom: 0px;
  }
  .status {padding-top: 0px;}
  .mainmenu a {
    padding: 8px 10px;
  }
  .mainmenu {
    padding: 10px;
  }
}
@media screen and (min-width: 600px) {
  /* Spacing for desktop */
  body {
    padding-left: 20px;
    padding-right: 20px;
  }
  .title {
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .status {padding-top: 30px;}
  .mainmenu a {
    padding: 8px 20px;
  }
  .mainmenu {
    padding: 10px;
  }
}
Added skins/etienne/details.txt.




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timeline-arrowheads:        1
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           0
Added skins/etienne/footer.txt.





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<footer>
This page was generated in about
<th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s by
Fossil $release_version $manifest_version $manifest_date
</footer>
Added skins/etienne/header.txt.





























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<header>
  <div class="title"><h1>$<project_name></h1>$<title></div>
  <div class="status">
    <th1>
      if {[info exists login]} {
        html "<a href='$home/login'>$login</a>\n"
      } else {
        html "<a href='$home/login'>Login</a>\n"
      }
    </th1>
  </div>
</header>
<nav class="mainmenu" title="Main Menu">
  <th1>
    html "<a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a>"
    builtin_request_js hbmenu.js
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {
        if {[string match $url\[/?#\]* /$current_page/]} {
          set class "active $class"
        }
        set url $home$url
      }
      html "<a href='$url' class='$class'>$name</a>\n"
    }
  </th1>
</nav>
<nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
Added skins/khaki/css.txt.





















































































































































































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/* General settings for the entire page */
body {
  margin: 0ex 0ex;
  padding: 0px;
  background-color: #fef3bc;
  font-family: sans-serif;
  text-size-adjust: none;
}

/* The project logo in the upper left-hand corner of each page */
div.logo {
  display: inline;
  text-align: center;
  vertical-align: bottom;
  font-weight: bold;
  font-size: 2.5em;
  color: #a09048;
  white-space: nowrap;
}

/* The page title centered at the top of each page */
div.title {
  display: table-cell;
  font-size: 2em;
  font-weight: bold;
  text-align: left;
  padding: 0 0 0 5px;
  color: #a09048;
  vertical-align: bottom;
  width: 100%;
}

/* The login status message in the top right-hand corner */
div.status {
  display: table-cell;
  text-align: right;
  vertical-align: bottom;
  color: #a09048;
  padding: 5px 5px 0 0;
  font-size: 0.8em;
  font-weight: bold;
  white-space: nowrap;
}

/* The header across the top of the page */
header {
  display: table;
  width: 100%;
}

/* The main menu bar that appears at the top of the page beneath
** the header */
nav.mainmenu {
  padding: 5px 10px 5px 10px;
  font-size: 0.9em;
  font-weight: bold;
  text-align: center;
  letter-spacing: 1px;
  background-color: #a09048;
  color: black;
  z-index: 21;  /* just above hbdrop */
}
nav#hbdrop {
  background-color: #fef3bc;
  border: 2px solid #a09048;
  border-radius: 0 0 0.5em 0.5em;
  display: none;
  left: 2em;
  width: 90%;
  padding-right: 1em;
  position: absolute;
  z-index: 20;  /* just below mainmenu, but above timeline bubbles */
}


/* The submenu bar that *sometimes* appears below the main menu */
div.submenu, div.sectionmenu {
  padding: 3px 10px 3px 0px;
  font-size: 0.9em;
  text-align: center;
  background-color: #c0af58;
  color: white;
}
nav.mainmenu a, nav.mainmenu a:visited, div.submenu a, div.submenu a:visited,
div.sectionmenu>a.button:link, div.sectionmenu>a.button:visited,
div.submenu label {
  padding: 3px 10px 3px 10px;
  color: white;
  text-decoration: none;
}
nav.mainmenu a:hover, div.submenu a:hover, div.sectionmenu>a.button:hover,
div.submenu label:hover, nav#hbdrop a:hover {
  color: #a09048;
  background-color: white;
}

/* All page content from the bottom of the menu or submenu down to
** the footer */
div.content {
  padding: 1ex 5px;
}
div.content a, nav#hbdrop a { color: #706532; }
div.content a:link, nav#hbdrop a:link { color: #706532; }
div.content a:visited, nav#hbdrop a:visited { color: #704032; }
div.content a:hover, nav#hbdrop a:hover {
  background-color: white; color: #706532;
}
a, a:visited {
  text-decoration: none;
}


/* Some pages have section dividers */
div.section {
  margin-bottom: 0px;
  margin-top: 1em;
  padding: 3px 3px 0 3px;
  font-size: 1.2em;
  font-weight: bold;
  background-color: #a09048;
  color: white;
  white-space: nowrap;
}

/* The "Date" that occurs on the left hand side of timelines */
div.divider {
  background: #e1d498;
  border: 2px #a09048 solid;
  font-size: 1em; font-weight: normal;
  padding: .25em;
  margin: .2em 0 .2em 0;
  float: left;
  clear: left;
  white-space: nowrap;
}

/* The footer at the very bottom of the page */
footer {
  font-size: 0.8em;
  margin-top: 12px;
  padding: 5px 10px 5px 10px;
  text-align: right;
  background-color: #a09048;
  color: white;
}

/* Hyperlink colors */
footer a { color: white; }
footer a:link { color: white; }
footer a:visited { color: white; }
footer a:hover { background-color: white; color: #558195; }

/* <verbatim> blocks */
pre.verbatim {
  background-color: #f5f5f5;
  padding: 0.5em;
  white-space: pre-wrap;
}

/* The label/value pairs on (for example) the ci page */
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 2ex;
}

div.forumPostBody blockquote {
  border-width: 1pt;
  border-radius: 0.25em;
  border-style: solid;
  padding: 0 0.5em;
}

tr.diffskip > td.chunkctrl .jcbutton {
  color: white;
  background-color: #a09048;
}

tr.diffskip.jchunk {
  background-color: #c0af58;
}
Added skins/khaki/details.txt.




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timeline-arrowheads:        1
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           0
Added skins/khaki/footer.txt.



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<footer>
Fossil $release_version $manifest_version $manifest_date
</footer>
Added skins/khaki/header.txt.

























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<header>
  <div class="title">$<title></div>
  <div class="status">
    <div class="logo">$<project_name></div><br/>
    <th1>
      if {[info exists login]} {
        puts "Logged in as $login"
      } else {
        puts "Not logged in"
      }
    </th1>
  </div>
</header>
<nav class="mainmenu" title="Main Menu">
  <th1>
    html "<a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a>"
    builtin_request_js hbmenu.js
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {set url $home$url}
      html "<a href='$url' class='$class'>$name</a>\n"
    }
  </th1>
</nav>
<nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
Added skins/original/css.txt.





















































































































































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/* General settings for the entire page */
body {
  margin: 0ex 1ex;
  padding: 0px;
  background-color: white;
  font-family: sans-serif;
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  -mx-text-size-adjust: none;
}

/* The project logo in the upper left-hand corner of each page */
div.logo {
  display: table-cell;
  text-align: center;
  vertical-align: bottom;
  font-weight: bold;
  color: #558195;
  min-width: 50px;
  white-space: nowrap;
}

/* The page title centered at the top of each page */
div.title {
  display: table-cell;
  font-size: 2em;
  font-weight: bold;
  text-align: center;
  padding: 0 0 0 1em;
  color: #558195;
  vertical-align: bottom;
  width: 100%;
}

/* The login status message in the top right-hand corner */
div.status {
  display: table-cell;
  text-align: right;
  vertical-align: bottom;
  color: #558195;
  font-size: 0.8em;
  font-weight: bold;
  white-space: nowrap;
}

/* The header across the top of the page */
header {
  display: table;
  width: 100%;
}

/* The main menu bar that appears at the top of the page beneath
** the header */
nav.mainmenu {
  padding: 5px;
  font-size: 0.9em;
  font-weight: bold;
  text-align: center;
  letter-spacing: 1px;
  background-color: #558195;
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
  color: white;
}

/* The submenu bar that *sometimes* appears below the main menu */
div.submenu, div.sectionmenu {
  padding: 3px 10px 3px 0px;
  font-size: 0.9em;
  text-align: center;
  background-color: #456878;
  color: white;
}
nav.mainmenu a, nav.mainmenu a:visited, div.submenu a, div.submenu a:visited,
div.sectionmenu>a.button:link, div.sectionmenu>a.button:visited,
div.submenu label {
  padding: 3px 10px 3px 10px;
  color: white;
  text-decoration: none;
}
nav.mainmenu a:hover, div.submenu a:hover, div.sectionmenu>a.button:hover,
div.submenu label:hover {
  color: #558195;
  background-color: white;
}

/* All page content from the bottom of the menu or submenu down to
** the footer */
div.content {
  padding: 0ex 1ex 1ex 1ex;
  border: solid #aaa;
  border-width: 1px;
}

/* Some pages have section dividers */
div.section {
  margin-bottom: 0px;
  margin-top: 1em;
  padding: 1px 1px 1px 1px;
  font-size: 1.2em;
  font-weight: bold;
  background-color: #558195;
  color: white;
  white-space: nowrap;
}

/* The "Date" that occurs on the left hand side of timelines */
div.divider {
  background: #a1c4d4;
  border: 2px #558195 solid;
  font-size: 1em; font-weight: normal;
  padding: .25em;
  margin: .2em 0 .2em 0;
  float: left;
  clear: left;
  white-space: nowrap;
}

/* The footer at the very bottom of the page */
footer {
  clear: both;
  font-size: 0.8em;
  padding: 5px 10px 5px 10px;
  text-align: right;
  background-color: #558195;
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
  color: white;
}

/* Hyperlink colors in the footer */
footer a { color: white; }
footer a:link { color: white; }
footer a:visited { color: white; }
footer a:hover { background-color: white; color: #558195; }

/* verbatim blocks */
pre.verbatim {
  background-color: #f5f5f5;
  padding: 0.5em;
  white-space: pre-wrap;
}

/* The label/value pairs on (for example) the ci page */
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 2ex;
}
Added skins/original/details.txt.




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timeline-arrowheads:        1
timeline-circle-nodes:      0
timeline-color-graph-lines: 0
white-foreground:           0
Added skins/original/footer.txt.
























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<footer>
  <th1>
  proc getTclVersion {} {
    if {[catch {tclEval info patchlevel} tclVersion] == 0} {
      return "<a href=\"https://www.tcl.tk/\">Tcl</a> version $tclVersion"
    }
    return ""
  }
  proc getVersion { version } {
    set length [string length $version]
    return [string range $version 1 [expr {$length - 2}]]
  }
  set version [getVersion $manifest_version]
  set tclVersion [getTclVersion]
  set fossilUrl https://www.fossil-scm.org
  set fossilDate [string range $manifest_date 0 9]T[string range $manifest_date 11 end]
  </th1>
  This page was generated in about
  <th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s by
  <a href="$fossilUrl/">Fossil</a>
  version $release_version $tclVersion
  <a href="$fossilUrl/index.html/info/$version">$manifest_version</a>
  <a href="$fossilUrl/index.html/timeline?c=$fossilDate&amp;y=ci">$manifest_date</a>
</footer>
Added skins/original/header.txt.











































































































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<header>
  <div class="logo">
    <th1>
    ##
    ## NOTE: The purpose of this procedure is to take the base URL of the
    ##       Fossil project and return the root of the entire web site using
    ##       the same URI scheme as the base URL (e.g. http or https).
    ##
    proc getLogoUrl { baseurl } {
      set idx(first) [string first // $baseurl]
      if {$idx(first) != -1} {
        ##
        ## NOTE: Skip second slash.
        ##
        set idx(first+1) [expr {$idx(first) + 2}]
        ##
        ## NOTE: (part 1) The [string first] command does NOT actually
        ##       support the optional startIndex argument as specified
        ##       in the TH1 support manual; therefore, we fake it by
        ##       using the [string range] command and then adding the
        ##       necessary offset to the resulting index manually
        ##       (below).  In Tcl, we could use the following instead:
        ##
        ##       set idx(next) [string first / $baseurl $idx(first+1)]
        ##
        set idx(nextRange) [string range $baseurl $idx(first+1) end]
        set idx(next) [string first / $idx(nextRange)]
        if {$idx(next) != -1} {
          ##
          ## NOTE: (part 2) Add the necessary offset to the result of
          ##       the search for the next slash (i.e. the one after
          ##       the initial search for the two slashes).
          ##
          set idx(next) [expr {$idx(next) + $idx(first+1)}]
          ##
          ## NOTE: Back up one character from the next slash.
          ##
          set idx(next-1) [expr {$idx(next) - 1}]
          ##
          ## NOTE: Extract the URI scheme and host from the base URL.
          ##
          set scheme [string range $baseurl 0 $idx(first)]
          set host [string range $baseurl $idx(first+1) $idx(next-1)]
          ##
          ## NOTE: Try to stay in SSL mode if we are there now.
          ##
          if {[string compare $scheme http:/] == 0} {
            set scheme http://
          } else {
            set scheme https://
          }
          set logourl $scheme$host/
        } else {
          set logourl $baseurl
        }
      } else {
        set logourl $baseurl
      }
      return $logourl
    }
    set logourl [getLogoUrl $baseurl]
    </th1>
    <a href="$logourl">
      <img src="$logo_image_url" border="0" alt="$project_name">
    </a>
  </div>
  <div class="title">$<title></div>
  <div class="status"><nobr><th1>
     if {[info exists login]} {
       puts "Logged in as $login"
     } else {
       puts "Not logged in"
     }
  </th1></nobr><small><div id="clock"></div></small></div>
</header>
<th1>html "<script nonce='$nonce'>"</th1>
  function updateClock(){
    var e = document.getElementById("clock");
    if(e){
      var d = new Date();
      function f(n) {
        return n < 10 ? '0' + n : n;
      }
      e.innerHTML = d.getUTCFullYear()+ '-' +
        f(d.getUTCMonth() + 1) + '-' +
        f(d.getUTCDate())      + ' ' +
        f(d.getUTCHours())     + ':' +
        f(d.getUTCMinutes());
      setTimeout(updateClock,(60-d.getUTCSeconds())*1000);
    }
  }
  updateClock();
</script>
<nav class="mainmenu" title="Main Menu">
  <th1>
    set sitemap 0
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {set url $home$url}
      html "<a href='$url' class='$class'>$name</a>\n"
      if {[string match */sitemap $url]} {set sitemap 1}
    }
    if {!$sitemap} {
      html "<a href='$home/sitemap'>...</a>"
    }
  </th1>
</nav>
Added skins/plain_gray/css.txt.






















































































































































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/* General settings for the entire page */
body {
  margin: 0ex 1ex;
  padding: 0px;
  background-color: white;
  font-family: sans-serif;
  text-size-adjust: none;
}

/* The page title centered at the top of each page */
div.title {
  display: table-cell;
  font-size: 1.5em;
  font-weight: bold;
  text-align: center;
  padding: 0 0 0 10px;
  color: #404040;
  vertical-align: bottom;
  width: 100%;
}

/* The login status message in the top right-hand corner */
div.status {
  display: table-cell;
  text-align: right;
  vertical-align: bottom;
  color: #404040;
  font-weight: bold;
  white-space: nowrap;
}

/* The header across the top of the page */
header {
  display: table;
  width: 100%;
}

/* The main menu bar that appears at the top of the page beneath
** the header */
nav.mainmenu {
  padding: 5px 10px 5px 10px;
  font-size: 0.9em;
  font-weight: bold;
  text-align: center;
  letter-spacing: 1px;
  background-color: #404040;
  color: white;
  z-index: 21;  /* just above hbdrop */
}
.hbdrop {
  background-color: white;
  border: 1px solid black;
  border-radius: 0.5em;
  display: none;
  width: 95%;
  position: absolute;
  z-index: 20;  /* just below mainmenu, but above timeline bubbles */
}
div.hbdrop a { color: #604000; }
div.hbdrop a:link { color: #604000;}
div.hbdrop a:visited { color: #600000; }


/* The submenu bar that *sometimes* appears below the main menu */
div.submenu, div.sectionmenu {
  padding: 3px 10px 3px 0px;
  font-size: 0.9em;
  text-align: center;
  background-color: #606060;
  color: white;
}
nav.mainmenu a,
nav.mainmenu a:visited,
div.submenu a,
div.submenu a:visited,
div.sectionmenu>a.button:link,
div.sectionmenu>a.button:visited,
div.submenu label {
  padding: 3px 10px 3px 10px;
  color: white;
  text-decoration: none;
}
nav.mainmenu a:hover,
div.submenu a:hover,
div.sectionmenu>a.button:hover,
div.submenu label:hover {
  color: #404040;
  background-color: white;
}
a, a:visited {
  text-decoration: none;
}

/* All page content from the bottom of the menu or submenu down to
** the footer */
div.content {
  padding: 0ex 0ex 0ex 0ex;
}
/* Hyperlink colors */
div.content a { color: #604000; }
div.content a:link { color: #604000;}
div.content a:visited { color: #600000; }

/* <verbatim> blocks */
pre.verbatim {
  background-color: #ffffff;
  padding: 0.5em;
  white-space: pre-wrap;
}

/* Some pages have section dividers */
div.section {
  margin-bottom: 0px;
  margin-top: 1em;
  padding: 1px 1px 1px 1px;
  font-size: 1.2em;
  font-weight: bold;
  background-color: #404040;
  color: white;
  white-space: nowrap;
}

/* The "Date" that occurs on the left hand side of timelines */
div.divider {
  background: #a0a0a0;
  border: 2px #505050 solid;
  font-size: 1em; font-weight: normal;
  padding: .25em;
  margin: .2em 0 .2em 0;
  float: left;
  clear: left;
  white-space: nowrap;
}

/* The footer at the very bottom of the page */
footer {
  font-size: 0.8em;
  margin-top: 12px;
  padding: 5px 10px 5px 10px;
  text-align: right;
  background-color: #404040;
  color: white;
}

/* The label/value pairs on (for example) the vinfo page */
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 2ex;
}
Added skins/plain_gray/details.txt.




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timeline-arrowheads:        1
timeline-circle-nodes:      1
timeline-color-graph-lines: 0
white-foreground:           0
Added skins/plain_gray/footer.txt.



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<footer>
Fossil $release_version $manifest_version $manifest_date
</footer>
Added skins/plain_gray/header.txt.















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<header>
  <div class="title">$<project_name>: $<title></div>
</header>
<nav class="mainmenu" title="Main Menu">
  <th1>
    html "<a id='hbbtn' href='$home/sitemap' aria-label='Site Map'>&#9776;</a>"
    builtin_request_js hbmenu.js
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {set url $home$url}
      html "<a href='$url' class='$class'>$name</a>\n"
    }
  </th1>
</nav>
<nav id="hbdrop" class='hbdrop' title="sitemap"></nav>
Added skins/xekri/README.md.


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"xekri" is a Lojban word that means "extermely dark-colored".
This skin was contributed by Andrew Moore.
Added skins/xekri/css.txt.




















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/******************************************************************************
 * Xekri
 *
 * To adjust the width of the contents for this skin, look for the "max-width"
 * property and change its value.  (It's in the "Main Area" section)  The value
 * determines how much of the browser window to use.  Some like 100%, so that
 * the entire window is used.  Others prefer 80%, which makes the contents
 * easier to read for them.
 */


/**************************************
 * General HTML
 */

html {
  background-color: #333;
  color: #eee;
  font-family: Monospace;
  font-size: 1em;
  min-height: 100%;
}

body {
  margin: 0;
  padding: 0;
  text-size-adjust: none;
}

a {
  color: #40a0ff;
}

a:hover {
  font-weight: bold;
}

blockquote pre {
  border: 1px dashed #ee0;
}

blockquote pre, pre.verbatim {
  background-color: #000;
  border-radius: 0.75rem;
  padding: 0.5rem;
  white-space: pre-wrap;
}

input[type="password"], input[type="text"], textarea {
  background-color: #111;
  color: #fff;
  font-size: 1rem;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

/**************************************
 * Main Area
 */

header, nav.mainmenu, div.submenu, div.content, footer {
  clear: both;
  margin: 0 auto;
  max-width: 90%;
  padding: 0.25rem 1rem;
}


/**************************************
 * Main Area: Header
 */

header {
  margin: 0.5rem auto 0 auto;
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
}
div.logo {
  display: inline;
  max-height: 4em;
  max-width: 4em;
  flex: 0 1 auto;
}

div.logo img {
  padding: 0;
  box-shadow: 2px 4px 6px rgba(180,180,180,0.70);
  border-radius: 2mm;
}

div.logo br {
  display: none;
}

div.logo nobr {
  color: #eee;
  font-size: 1.2rem;
  font-weight: bold;
  padding: 0;
  text-shadow: 3px 3px 1px #000;
  vertical-align: top;
  white-space: nowrap;
}

div.title {
  color: #3297f9;
  font-family: Verdana, sans-serif;
  font-weight: bold;
  font-size: 2.5rem;
  padding: 0.5rem;
  text-align: center;
  text-shadow: 3px 3px 1px #000;
  flex: 10 0 auto;
}

div.status {
  color: #ee0;
  font-size: 1rem;
  padding: 0.25rem;
  text-align: right;
  text-shadow: 2px 2px 1px #000;
  flex: 0 1 auto;
}


/**************************************
 * Main Area: Global Menu
 */

nav.mainmenu, div.submenu {
  background-color: #080;
  border-radius: 1rem 1rem 0 0;
  box-shadow: 3px 4px 1px #000;
  color: #000;
  font-weight: bold;
  font-size: 1.1rem;
  text-align: center;
}

nav.mainmenu {
  padding-top: 0.33rem;
  padding-bottom: 0.25rem;
}

div.submenu {
  border-top: 1px solid #0a0;
  border-radius: 0;
  display: block;
}

nav.mainmenu a, div.submenu a, div.submenu label {
  color: #000;
  padding: 0 0.75rem;
  text-decoration: none;
}

nav.mainmenu a:hover, div.submenu a:hover, div.submenu label:hover {
  color: #fff;
  text-shadow: 0px 0px 6px #0f0;
}

div.submenu * {
  margin: 0 0.5rem;
  vertical-align: middle;
}

div.submenu select, div.submenu input {
  background-color: #222;
  border: 1px inset #080;
  color: #eee;
  cursor: pointer;
  font-size: 0.9rem;
}

div.submenu select {
  height: 1.75rem;
}

/**************************************
 * Main Area: Content
 */

div.content {
  background-color: #222;
  border-radius: 0 0 1rem 1rem;
  box-shadow: 3px 3px 1px #000;
  min-height:40%;
  padding-bottom: 1rem;
  padding-top: 0.5rem;
}

div.content table[bgcolor="white"] {
  color: #000;
}

.piechartLabel {
  fill: white;
}
.piechartLine {
  stroke: white;
}

/**************************************
 * Main Area: Footer
 */

footer {
  color: #ee0;
  font-size: 0.75rem;
  padding: 0;
  text-align: right;
  width: 75%;
}


footer div {
  background-color: #222;
  box-shadow: 3px 3px 1px #000;
  border-radius: 0 0 1rem 1rem;
  margin: 0 0 10px 0;
  padding: 0.25rem 0.75rem;
}

footer div.page-time {
  float: left;
}

footer div.fossil-info {
  float: right;
}

footer a, footer a:link, footer a:visited {
  color: #ee0;
}

footer a:hover {
  color: #fff;
  text-shadow: 0px 0px 6px #ee0;
}


/**************************************
 * Check-in
 */

table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.1rem 1rem;
}


/**************************************
 * Diffs
 */

tr.diffskip.jchunk {
  background-color: black;
}
tr.diffskip > td.chunkctrl .jcbutton {
  background-color: #303536;
}

/* Code Added */
td.diffln ins,
td.difftxt ins > ins {
  background-color: #7f7;
  color: #000;
}
td.difftxt ins {
  background-color: inherit;
}

/* Code Deleted */
td.diffln del,
td.difftxt del > del {
  background-color: #f77;
  color: #000;
}
td.difftxt del {
  background-color: inherit;
}


/**************************************
 * Diffs : Side-By-Side
 */

/* display (column-based) */
table.splitdiff {
  border-spacing: 0;
  font-size: 0.85rem;
}

table.splitdiff pre {
  border: 0;
  margin: 0 0.5em;
  padding: 0;
}

table.splitdiff td {
  padding: 0;
  vertical-align: top;
}

/* line number column */
td.diffln {
  color: #ee0;
  padding-right: 0.75em;
  text-align: right;
}

/* diff text column */
td.difftxt {
  background-color: #111;
  overflow-x: auto;
  width: 45em;
}


/* diff marker column */
td.diffsep {
  padding: 0 0.5em;
}


/**************************************
 * Diffs : Unified
 */

table.udiff pre {
  background-color: #111;
}


/**************************************
 * File List : Flat
 */

table.browser {
  width: 100%;
  border: 0;
}

td.browser {
  width: 24%;
  vertical-align: top;
}

ul.browser {
  margin: 0.5rem;
  padding: 0.5rem;
  white-space: nowrap;
}

ul.browser li.dir {
  font-style: italic
}


/**************************************
 * File List : Age
 */

.fileage tr:hover {
  background-color: #225;
}


/**************************************
 * File List : Tree
 */

.filetree {
  line-height: 1.5;
  margin: 1rem 0;
}

/* list */
.filetree ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* collapsed list */
.filetree ul.collapsed {
  display: none;
}

/* lists below the root */
.filetree ul ul {
  margin: 0 0 0 21px;
  position: relative;
}

/* lists items */
.filetree li {
  margin: 0;
  padding: 0;
  position: relative;
}

/* node lines */
.filetree li li:before {
  border-bottom: 2px solid #000;
  border-left: 2px solid #000;
  content: '';
  height: 1.5rem;
  left: -14px;
  position: absolute;
  top: -0.8rem;
  width: 14px;
}

/* directory lines */
.filetree li > ul:before {
  border-left: 2px solid #000;
  bottom: 0;
  content: '';
  left: -35px;
  position: absolute;
  top: -1.5rem;
}

/* hide lines for last-child directories */
.filetree li.last > ul:before {
  display: none;
}

.filetree a {
  background-image: url(data:image/gif;base64,R0lGODlhEAAQAJEAAP\/\/\/yEhIf\/\/\/wAAACH5BAEHAAIALAAAAAAQABAAAAIvlIKpxqcfmgOUvoaqDSCxrEEfF14GqFXImJZsu73wepJzVMNxrtNTj3NATMKhpwAAOw==);
  background-position: center left;
  background-repeat: no-repeat;
  display: inline-block;
  min-height: 16px;
  padding-left: 21px;
  position: relative;
  z-index: 1;
}

.filetree .dir > a {
  background-image: url(data:image/gif;base64,R0lGODlhEAAQAJEAAP/WVCIiIv\/\/\/wAAACH5BAEHAAIALAAAAAAQABAAAAInlI9pwa3XYniCgQtkrAFfLXkiFo1jaXpo+jUs6b5Z/K4siDu5RPUFADs=);
  font-style: italic
}

.filetreeline:hover {
  color: #000;
  font-weight: bold;
}

.filetreeline .filetreeage {
  padding-right: 0.5rem;
}

/**************************************
 * Logout
 */

span.loginError {
  color: #f00;
}

table.login_out {
  margin: 10px;
  text-align: left;
}

td.login_out_label {
  text-align: center;
}

div.captcha {
  padding: 1rem;
  text-align: center;
}

table.captcha {
  background-color: #111;
  border-color: #111;
  border-style: inset;
  border-width: 2px;
  margin: auto;
  padding: 0.5rem;
}

table.captcha pre {
  color: #ee0;
}


/**************************************
 * Statistics Reports
 */

.statistics-report-graph-line {
  border: 2px solid #22e;
  background-color: #22e;
}
.statistics-report-graph-extra {
  border: 2px dashed #22e;
  border-left-style: none;
}

.statistics-report-table-events th {
  padding: 0 1rem;
}

.statistics-report-table-events td {
  padding: 0.1rem 1rem;
}

.statistics-report-row-year {
  color: #ee0;
  text-align: left;
}

.statistics-report-week-number-label {
  font-size: 0.8rem;
  text-align: right;
}

.statistics-report-week-of-year-list {
  font-size: 0.8rem;
}


/**************************************
 * Search
 */

.searchResult .snippet mark {
  color: #ee0;
}


/**************************************
 * Sections
 */

div.section, div.sectionmenu {
  color: #2ee;
  background-color: #22c;
  border-radius: 0 3rem;
  box-shadow: 2px 2px #000;
  display: flex;
  font-size: 1.1rem;
  font-weight: bold;
  justify-content: space-around;
  margin: 1.2rem auto 0.75rem auto;
  padding: 0.2rem;
  text-align: center;
}

div.sectionmenu {
  border-radius: 0 0 3rem 3rem;
  margin-top: auto;
  width: 75%;
}

div.sectionmenu > a:link, div.sectionmenu > a:visited {
  color: #000;
  text-decoration: none;
}

div.sectionmenu > a:hover {
  color: #eee;
  text-shadow: 0px 0px 6px #eee;
}


/**************************************
 * Sidebox
 */

div.sidebox {
  background-color: #333;
  border-radius: 0.5rem;
  box-shadow: 3px 3px 1px #000;
  float: right;
  margin: 1rem 0.5rem;
  padding: 0.5rem;
}

div.sidebox ol {
  margin: 0 0 0.5rem 2.5rem;
  padding: 0 0;
}

div.sidebox ol li {
  margin-top: 0.75rem;
}

div.sideboxTitle {
  background-color: #ee0;
  border-radius: 0.5rem 0.5rem 0 0;
  color: #000;
  font-weight: bold;
  margin: -0.5rem -0.5rem 0 -0.5rem;
  padding: 0.25rem;
  text-align: center;
}

div.sideboxDescribed {
  display: inline;
}

/* --- Untested : Begin --- */
/* The defined element in sideboxes for branches,.. */
span.disabled {
  color: #f00;
}
/* --- Untested : End --- */


/**************************************
 * Tag
 */

/* --- Untested : Begin --- */
/* the format for the tag links */
a.tagLink {
}
/* the format for the tag display(no history permission!) */
span.tagDsp {
  font-weight: bold;
}
/* the format for fixed/canceled tags,.. */
span.infoTagCancelled {
  font-weight: bold;
  text-decoration: line-through;
}
/* --- Untested : End --- */


/**************************************
 * Ticket
 */

table.report {
  color: #000;
  border: 1px solid #999;
  border-collapse: collapse;
  margin: 1rem 0;
}

table.report tr th {
  color: #eee;
  padding: 3px 5px;
  text-transform : capitalize;
}

table.report tr td {
  padding: 3px 5px;
}

/* example ticket colors */
table.rpteditex {
  border-collapse: collapse;
  border-spacing: 0;
  color: #000;
  float: right;
  margin: 0;
  padding: 0;
  text-align: center;
  width: 125px;
}

td.rpteditex {
  border-color: #000;
  border-style: solid;
  border-width: thin;
}

#reportTable {
}

/* format for labels on ticket display page */
td.tktDspLabel {
  text-align: right;
}

/* format for values on ticket display page */
td.tktDspValue {
  background-color: #111;
  text-align: left;
  vertical-align: top;
}

/* Tickets on timelines */
td.tktTlOpen {
  color: #ffa0a0;
}

/* format for ticket error messages */
span.tktError {
  color: #f00;
  font-weight: bold;
}


/**************************************
 * Timeline
 */

/* The suppressed duplicates lines in timeline, .. */
.timelineDisabled {
  font-size:  0.5rem;
  font-style: italic;
}

/* the format for the timeline version display(no history permission!) */
.timelineHistDsp {
  font-weight: bold;
}

.content .timelineTable {
  border:         0;
  border-spacing: 0 0.5rem;
}

.content .timelineTable tr {
  background: #222;
  border:     0;
  padding:    0;
  box-shadow: none;
}

.timelineTable .timelineDate {
  color:       #ee0;
  font-size:   1.2rem;
  font-weight: bold;
  margin-top:  1rem;
  white-space: nowrap;
}

.timelineTable .timelineTime {
  border-radius: 0;
  border-width:  0;
  padding:       0.25rem 0.5rem 0.5rem 0.5rem;
  white-space:   nowrap;
}

.timelineGraph {
  text-align:     left;
  vertical-align: top;
  width:          20px;
}

.timelineTable .timelineModernCell  ,
.timelineTable .timelineCompactCell ,
.timelineTable .timelineVerboseCell ,
.timelineTable .timelineDetailCell  {
/*
  background:    linear-gradient(to bottom, #222 0%, #333 16%, #222 100%);
*/
  border-radius: 0;
  border-width:  0;
  padding:       0.25rem 0.5rem 0.5rem 0.5rem;
}

.timelineTable .timelineColumnarCell {
/*
  background:    linear-gradient(to bottom, #222 0%, #333 16%, #222 100%);
*/
  border-radius: 0;
  border-width:  0;
  padding:       0.25rem 0.5rem 0.5rem 0.5rem;
}

.timelineTable .timelineModernCell[id]   ,
.timelineTable .timelineCompactCell[id]  ,
.timelineTable .timelineVerboseCell[id]  ,
.timelineTable .timelineColumnarCell[id] ,
.timelineTable .timelineDetailCell[id]   {
  background: #272727;
}

.timelineTable .timelineCurrent .timelineTime {
  background:    #333;
  border-radius: 1rem 0 0 1rem;
  border-width:  0;
}

.timelineTable .timelineCurrent .timelineColumnarCell {
  background:    #333;
}

.timelineTable .timelineCurrent .timelineModernCell  ,
.timelineTable .timelineCurrent .timelineCompactCell ,
.timelineTable .timelineCurrent .timelineVerboseCell ,
.timelineTable .timelineCurrent .timelineDetailCell  {
  background:    #333;
  border-radius: 0 1rem 1rem 0;
}

.timelineTable .timelineSelected {
  background: #222;
  border:     0;
  box-shadow: none;
}
.timelineSelected {}
.timelineSecondary {}

.timelineTable .timelineSelected .timelineTime {
  background:    #333;
  border-radius: 1rem 0 0 1rem;
  box-shadow:    2px 2px 1px #000;
}

.timelineTable .timelineSelected .timelineColumnarCell {
  background: #333;
  box-shadow: 2px 2px 1px #000;
}

.timelineTable .timelineSelected .timelineModernCell  ,
.timelineTable .timelineSelected .timelineCompactCell ,
.timelineTable .timelineSelected .timelineVerboseCell ,
.timelineTable .timelineSelected .timelineDetailCell  {
  background:    #333;
  border-radius: 0 1rem 1rem 0;
  box-shadow:    2px 2px 1px #000;
}

span.timelineSelected {
  padding: 0 1em 0 1em;
  border-radius: 1rem;
  background: #333;
  box-shadow:    2px 2px 1px #000;
}

.timelineTable .timelineModernCell  .timelineModernComment  ,
.timelineTable .timelineModernCell  .timelineModernDetail   ,
.timelineTable .timelineCompactCell .timelineCompactComment ,
.timelineTable .timelineCompactCell .timelineCompactDetail  ,
.timelineTable .timelineVerboseCell .timelineVerboseComment ,
.timelineTable .timelineVerboseCell .timelineVerboseDetail  {
}

.timelineTable .timelineModernCell     .timelineLeaf ,
.timelineTable .timelineCompactCell    .timelineLeaf ,
.timelineTable .timelineVerboseCell    .timelineLeaf ,
.timelineTable .timelineVerboseComment .timelineLeaf {
  font-weight: bold;
}

.timelineTable .timelineModernCell .timelineModernDetail ,
.timelineTable .timelineDetailCell {
  font-size: 85%;
}

.timelineTable .timelineDetailCell .timelineColumnarDetail {
  white-space: pre-line;
}

.timelineTable .timelineDetailCell ul.filelist::before {
  content: "files:";
}

.timelineTable .timelineDetailCell ul.filelist {
  margin-left:  0;
  padding-left: 0;
}

.timelineTable .timelineDetailCell ul.filelist li {
  margin-left:  1.5rem;
  padding-left: 0;
  white-space:  nowrap;
}

/* the format for the timeline version links */
a.timelineHistLink {
}


/**************************************
 * User Edit
 */

/* layout definition for the capabilities box on the user edit detail page */
div.ueditCapBox {
  float: left;
  margin: 0 20px 20px 0;
}

/* format of the label cells in the detailed user edit page */
td.usetupEditLabel {
  text-align: right;
  vertical-align: top;
  white-space: nowrap;
}

/* color for capabilities, inherited by nobody */
span.ueditInheritNobody {
  color: #0f0;
}

/* color for capabilities, inherited by developer */
span.ueditInheritDeveloper {
  color: #f00;
}

/* color for capabilities, inherited by reader */
span.ueditInheritReader {
  color: #ee0;
}

/* color for capabilities, inherited by anonymous */
span.ueditInheritAnonymous {
  color: #00f;
}

/* format for capabilities */
span.capability {
  font-weight: bold;
}

/* format for different user types */
span.usertype {
  font-weight: bold;
}

span.usertype:before {
  content:"'";
}

span.usertype:after {
  content:"'";
}


/**************************************
 * User List
 */

table.usetupLayoutTable {
  margin: 0.5rem;
  outline-style: none;
  padding: 0;
}

td.usetupColumnLayout {
  vertical-align: top
}

td.usetupColumnLayout ol th {
  padding: 0 0.75rem 0.5rem 0;
}

span.note {
  color: #ee0;
  font-weight: bold;
}

table.usetupUserList {
  margin: 0.5rem;
}

.usetupListUser {
  padding-right: 20px;
  text-align: right;
}

.usetupListCap {
  padding-right: 15px;
  text-align: center;
}

.usetupListCon {
  text-align: left;
}


/**************************************
 * Wiki
 */

span.wikiError {
  font-weight: bold;
  color: #f00;
}

/* the format for fixed/cancelled tags */
span.wikiTagCancelled {
  text-decoration: line-through;
}


/**************************************
 * Did not encounter these
 */

/* selected lines of text within a linenumbered artifact display */
table.numbered-lines td.line-numbers span.selected-line {
  font-weight: bold;
  color: #00f;
  background-color: #d5d5ff;
  border-color: #00f;
}

/* format for missing privileges note on user setup page */
p.missingPriv {
  color: #00f;
}

/* format for leading text in wikirules definitions */
span.wikiruleHead {
  font-weight: bold;
}


/* format for user color input on checkin edit page */
input.checkinUserColor {
  /* no special definitions, class defined, to enable color pickers,
  * f.e.:
  * ** add the color picker found at http:jscolor.com as java script
  * include
  * ** to the header and configure the java script file with
  * ** 1. use as bindClass :checkinUserColor
  * ** 2. change the default hash adding behaviour to ON
  * ** or change the class definition of element identified by
  * id="clrcust"
  * ** to a standard jscolor definition with java script in the footer.
  * */
}

/* format for end of content area, to be used to clear page flow. */
div.endContent {
  clear: both;
}

/* format for general errors */
p.generalError {
  color: #f00;
}

/* format for tktsetup errors */
p.tktsetupError {
  color: #f00;
  font-weight: bold;
}
/* format for xfersetup errors */
p.xfersetupError {
  color: #f00;
  font-weight: bold;
}
/* format for th script errors */
p.thmainError {
  color: #f00;
  font-weight: bold;
}
/* format for th script trace messages */
span.thTrace {
  color: #f00;
}
/* format for report configuration errors */
p.reportError {
  color: #f00;
  font-weight: bold;
}
/* format for report configuration errors */
blockquote.reportError {
  color: #f00;
  font-weight: bold;
}
/* format for artifact lines, no longer shunned */
p.noMoreShun {
  color: yellow;
}
/* format for artifact lines being shunned */
p.shunned {
  color: yellow;
}
/* a broken hyperlink */
span.brokenlink {
  color: #f00;
}
/* List of files in a timeline */
ul.filelist {
  margin-top: 3px;
  line-height: 100%;
}
/* Moderation Pending message on timeline */
span.modpending {
  color: #b30;
  font-style: italic;
}
/* format for textarea labels */
span.textareaLabel {
  font-weight: bold;
}
/* format for th1 script results */
pre.th1result {
  white-space: pre-wrap;
  word-wrap: break-word;
}
/* format for th1 script errors */
pre.th1error {
  white-space: pre-wrap;
  word-wrap: break-word;
  color: #f00;
}

/* even table row color */
tr.row0 {
  /* use default */
}
/* odd table row color */
tr.row1 {
  /* Use default */
}

.fossil-PopupWidget,
.fossil-tooltip.help-buttonlet-content {
  background-color: #111;
  border: 1px solid rgba(255,255,255,0.5);
}
.fossil-PopupWidget a,
.fossil-PopupWidget a:visited {
  color: white;
}
div.forumSel {
  background-color: #663399;
}
div.forumPostBody blockquote {
  border-width: 1pt;
  border-style: solid;
  padding: 0 0.5em;
  border-radius: 0.25em;
}

body.forum .forumPosts.fileage a {
  color: #60c0ff;
}
body.forum .forumPosts.fileage a:visited {
  color: #40a0ff;
}

.debug {
  color: black;
}

body.branch .brlist > table > tbody > tr:hover:not(.selected),
body.branch .brlist > table > tbody > tr.selected {
  background-color: #444;
}

body.chat header, body.chat footer,
body.chat nav.mainmenu, body.chat div.submenu,
body.chat div.content {
  margin-left: 0.5em;
  margin-right: 0.5em;
  margin-top: auto/*eliminates unnecessary scrollbars*/;
}
body.chat.chat-only-mode div.content {
  max-width: revert;
}
body.chat #chat-user-list .chat-user{
  color: white;
}
Added skins/xekri/details.txt.




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timeline-arrowheads:        1
timeline-circle-nodes:      0
timeline-color-graph-lines: 1
white-foreground:           1
Added skins/xekri/footer.txt.









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</div>
<footer>
  <div class="page-time">
    Generated in <th1>puts [expr {([utime]+[stime]+1000)/1000*0.001}]</th1>s
  </div>
  <div class="fossil-info">
    Fossil v$release_version $manifest_version
  </div>
</footer>
Added skins/xekri/header.txt.
























































































































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<header>
  <div class="logo">
    <th1>
    ##
    ## NOTE: The purpose of this procedure is to take the base URL of the
    ##       Fossil project and return the root of the entire web site using
    ##       the same URI scheme as the base URL (e.g. http or https).
    ##
    proc getLogoUrl { baseurl } {
      set idx(first) [string first // $baseurl]
      if {$idx(first) != -1} {
        ##
        ## NOTE: Skip second slash.
        ##
        set idx(first+1) [expr {$idx(first) + 2}]
        ##
        ## NOTE: (part 1) The [string first] command does NOT actually
        ##       support the optional startIndex argument as specified
        ##       in the TH1 support manual; therefore, we fake it by
        ##       using the [string range] command and then adding the
        ##       necessary offset to the resulting index manually
        ##       (below).  In Tcl, we could use the following instead:
        ##
        ##       set idx(next) [string first / $baseurl $idx(first+1)]
        ##
        set idx(nextRange) [string range $baseurl $idx(first+1) end]
        set idx(next) [string first / $idx(nextRange)]
        if {$idx(next) != -1} {
          ##
          ## NOTE: (part 2) Add the necessary offset to the result of
          ##       the search for the next slash (i.e. the one after
          ##       the initial search for the two slashes).
          ##
          set idx(next) [expr {$idx(next) + $idx(first+1)}]
          ##
          ## NOTE: Back up one character from the next slash.
          ##
          set idx(next-1) [expr {$idx(next) - 1}]
          ##
          ## NOTE: Extract the URI scheme and host from the base URL.
          ##
          set scheme [string range $baseurl 0 $idx(first)]
          set host [string range $baseurl $idx(first+1) $idx(next-1)]
          ##
          ## NOTE: Try to stay in SSL mode if we are there now.
          ##
          if {[string compare $scheme http:/] == 0} {
            set scheme http://
          } else {
            set scheme https://
          }
          set logourl $scheme$host/
        } else {
          set logourl $baseurl
        }
      } else {
        set logourl $baseurl
      }
      return $logourl
    }
    if {1} {
      # Link logo to the top of the current domain
      set logourl [getLogoUrl $baseurl]
    } else {
      # Link logo to the top of the current repo
      set logourl $baseurl
    }
    </th1>
    <a href="$logourl">
      <img src="$logo_image_url" border="0" alt="$project_name">
    </a>
  </div>
  <div class="title">$<title></div>
  <div class="status"><nobr>
    <th1>
      if {[info exists login]} {
        puts "Logged in as $login"
      } else {
        puts "Not logged in"
      }
    </th1>
  </nobr><small><div id="clock"></div></small></div>
</header>
<th1>html "<script nonce='$nonce'>"</th1>
  function updateClock(){
    var e = document.getElementById("clock");
    if(e){
      var d = new Date();
      function f(n) {
        return n < 10 ? '0' + n : n;
      }
      e.innerHTML = d.getUTCFullYear()+ '-' +
        f(d.getUTCMonth() + 1) + '-' +
        f(d.getUTCDate())      + ' ' +
        f(d.getUTCHours())     + ':' +
        f(d.getUTCMinutes());
      setTimeout(updateClock,(60-d.getUTCSeconds())*1000);
    }
  }
  updateClock();
</script>
<nav class="mainmenu" title="Main Menu">
  <th1>
    set sitemap 0
    foreach {name url expr class} $mainmenu {
      if {![capexpr $expr]} continue
      if {[string match /* $url]} {
        if {[string match $url\[/?#\]* /$current_page/]} {
          set class "active $class"
        }
        set url $home$url
      }
      html "<a href='$url' class='$class'>$name</a>\n"
      if {[string match */sitemap $url]} {set sitemap 1}
    }
    if {!$sitemap} {
      html "<a href='$home/sitemap'>...</a>\n"
    }
  </th1>
</nav>
Added src/Makefile.



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all clean:
	$(MAKE) -C .. $(MAKECMDGOALS)

Added src/accordion.js.





























































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/*
** Attach appropriate javascript to each ".accordion" button so that it expands
** and contracts when clicked.
**
** The uncompressed source code for the SVG icons can be found on the wiki page
** "branch/accordion-experiments" in the Fossil repository.
**
** Implementation notes:
**
** The `maxHeight' CSS property is quite restrictive for vertical resizing of
** elements, especially for dynamic-content areas like the diff panels. That's
** why `maxHeight' is set only during animation, to prevent truncated elements.
** (The diff panels may get truncated right after page loading, and other
** elements may get truncated when resizing the browser window to a smaller
** width, causing vertical growth.)
**
** Another problem is that `scrollHeight' used to calculate the expanded height
** while still in the contracted state may return values with small errors on
** some browsers, especially for large elements, presumably due to omitting the
** space required by the vertical scrollbar that may become necessary, causing
** additional horizontal shrinking and consequently more vertical growth than
** calculated. That's why setting `maxHeight' to `scrollHeight' is considered
** "good enough" only during animation, but cleared afterwards.
**
** https://fossil-scm.org/forum/forumpost/66d7075f40
** https://fossil-scm.org/home/timeline?r=accordion-fix
*/
var acc_svgdata = ["data:image/svg+xml,"+
  "%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E"+
  "%3Cpath style='fill:black;opacity:0' d='M16,16H0V0h16v16z'/%3E"+
  "%3Cpath style='fill:rgb(240,240,240)' d='M14,14H2V2h12v12z'/%3E"+
  "%3Cpath style='fill:rgb(64,64,64)' d='M13,13H3V3h10v10z'/%3E"+
  "%3Cpath style='fill:rgb(248,248,248)' d='M12,12H4V4h8v8z'/%3E"+
  "%3Cpath style='fill:rgb(80,128,208)' d='", "'/%3E%3C/svg%3E",
  "M5,7h2v-2h2v2h2v2h-2v2h-2v-2h-2z", "M11,9H5V7h6v6z"];
var a = document.getElementsByClassName("accordion");
for(var i=0; i<a.length; i++){
  var img = document.createElement("img");
  img.src = acc_svgdata[0]+acc_svgdata[2]+acc_svgdata[1];
  img.className = "accordion_btn accordion_btn_plus";
  a[i].insertBefore(img,a[i].firstChild);
  img = document.createElement("img");
  img.src = acc_svgdata[0]+acc_svgdata[3]+acc_svgdata[1];
  img.className = "accordion_btn accordion_btn_minus";
  a[i].insertBefore(img,a[i].firstChild);
  a[i].addEventListener("click",function(){
    var x = this.nextElementSibling;
    if( this.classList.contains("accordion_closed") ){
      x.style.maxHeight = x.scrollHeight + "px";
      setTimeout(function(){
        x.style.maxHeight = "";
      },250); // default.css: .accordion_panel { transition-duration }
    }else{
      x.style.maxHeight = x.scrollHeight + "px";
      setTimeout(function(){
        x.style.maxHeight = "0";
      },1);
    }
    this.classList.toggle("accordion_closed");
  });
}
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** This file contains code used to check-out versions of the project
** from the local repository.
*/
#include "config.h"
#include "add.h"
#include <assert.h>
#include <dirent.h>
#include "cygsup.h"

/*
** This routine returns the names of files in a working check-out that
** are created by Fossil itself, and hence should not be added, deleted,
** or merge, and should be omitted from "clean" and "extras" lists.
**
** Return the N-th name.  The first name has N==0.  When all names have
** been used, return 0.
*/
const char *fossil_reserved_name(int N, int omitRepo){
  /* Possible names of the local per-check-out database file and
  ** its associated journals
  */
  static const char *const azName[] = {
     "_FOSSIL_",
     "_FOSSIL_-journal",
     "_FOSSIL_-wal",
     "_FOSSIL_-shm",
     ".fslckout",
     ".fslckout-journal",
     ".fslckout-wal",
     ".fslckout-shm",
** Set to true if files whose names begin with "." should be
** included when processing a recursive "add" command.
*/
static int includeDotFiles = 0;

     /* The use of ".fos" as the name of the check-out database is
     ** deprecated.  Use ".fslckout" instead.  At some point, the following
     ** entries should be removed.  2012-02-04 */
     ".fos",
     ".fos-journal",
     ".fos-wal",
     ".fos-shm",
  };

  /* Possible names of auxiliary files generated when the "manifest" property
  ** is used
  */
  static const struct {
    const char *fname;
    int flg;
  }aManifestflags[] = {
    { "manifest",      MFESTFLG_RAW },
    { "manifest.uuid", MFESTFLG_UUID },
    { "manifest.tags", MFESTFLG_TAGS }
  };
  static const char *azManifests[3];

/*
  /*
** Add a single file
*/
static void add_one_file(const char *zName, int vid, Blob *pOmit){
  Blob pathname;
  const char *zPath;
  ** Names of repository files, if they exist in the check-out.
  */
  static const char *azRepo[4] = { 0, 0, 0, 0 };

  /* Cached setting "manifest" */
  static int cachedManifest = -1;
  static int numManifests;

  if( cachedManifest == -1 ){
    int i;
    Blob repo;
    cachedManifest = db_get_manifest_setting();
    numManifests = 0;
    for(i=0; i<count(aManifestflags); i++){
      if( cachedManifest&aManifestflags[i].flg ) {
        azManifests[numManifests++] = aManifestflags[i].fname;
      }
    }
    blob_zero(&repo);
    if( file_tree_name(g.zRepositoryName, &repo, 0, 0) ){
      const char *zRepo = blob_str(&repo);
      azRepo[0] = zRepo;
      azRepo[1] = mprintf("%s-journal", zRepo);
      azRepo[2] = mprintf("%s-wal", zRepo);
      azRepo[3] = mprintf("%s-shm", zRepo);
    }
  }

  if( N<0 ) return 0;
  if( N<count(azName) ) return azName[N];
  N -= count(azName);
  if( cachedManifest ){
    if( N<numManifests ) return azManifests[N];
    N -= numManifests;
  }
  if( !omitRepo && N<count(azRepo) ) return azRepo[N];
  return 0;
}

/*
** Return a list of all reserved filenames as an SQL list.
*/
const char *fossil_all_reserved_names(int omitRepo){
  static char *zAll = 0;
  if( zAll==0 ){
    Blob x;
    int i;
    const char *z;
    blob_zero(&x);
    for(i=0; (z = fossil_reserved_name(i, omitRepo))!=0; i++){
      if( i>0 ) blob_append(&x, ",", 1);
      blob_appendf(&x, "'%q'", z);
    }
    zAll = blob_str(&x);
  }
  return zAll;
}

/*
** COMMAND: test-reserved-names
**
** Usage: %fossil test-reserved-names [-omitrepo]
**
** Show all reserved filenames for the current check-out.
*/
void test_reserved_names(void){
  int i;
  const char *z;
  int omitRepo = find_option("omitrepo",0,0)!=0;

  file_tree_name(zName, &pathname, 1);
  zPath = blob_str(&pathname);
  if( strcmp(zPath, "manifest")==0
   || strcmp(zPath, "_FOSSIL_")==0
   || strcmp(zPath, "_FOSSIL_-journal")==0
   || strcmp(zPath, ".fos")==0
   || strcmp(zPath, ".fos-journal")==0
   || strcmp(zPath, "manifest.uuid")==0
   || blob_compare(&pathname, pOmit)==0
  ){
  /* We should be done with options.. */
  verify_all_options();

  db_must_be_within_tree();
  for(i=0; (z = fossil_reserved_name(i, omitRepo))!=0; i++){
    fossil_print("%3d: %s\n", i, z);
  }
  fossil_print("ALL: (%s)\n", fossil_all_reserved_names(omitRepo));
}

/*
** Add a single file named zName to the VFILE table with vid.
**
** Omit any file whose name is pOmit.
*/
static int add_one_file(
  const char *zPath,   /* Tree-name of file to add. */
  int vid              /* Add to this VFILE */
){
    fossil_warning("cannot add %s", zPath);
  }else{
    if( !file_is_simple_pathname(zPath) ){
      fossil_fatal("filename contains illegal characters: %s", zPath);
    }
  int doSkip = 0;
  if( !file_is_simple_pathname(zPath, 1) ){
    fossil_warning("filename contains illegal characters: %s", zPath);
    return 0;
  }
#ifdef __MINGW32__
    if( db_exists("SELECT 1 FROM vfile"
                  " WHERE pathname=%Q COLLATE nocase", zPath) ){
      db_multi_exec("UPDATE vfile SET deleted=0"
                    " WHERE pathname=%Q COLLATE nocase", zPath);
  if( db_exists("SELECT 1 FROM vfile"
                " WHERE pathname=%Q %s", zPath, filename_collation()) ){
    db_multi_exec("UPDATE vfile SET deleted=0"
                  " WHERE pathname=%Q %s AND deleted",
    }
#else
    if( db_exists("SELECT 1 FROM vfile WHERE pathname=%Q", zPath) ){
                  zPath, filename_collation());
  }else{
    char *zFullname = mprintf("%s%s", g.zLocalRoot, zPath);
    int isExe = file_isexe(zFullname, RepoFILE);
    int isLink = file_islink(0);
    if( file_nondir_objects_on_path(g.zLocalRoot, zFullname) ){
      /* Do not add unsafe files to the vfile */
      db_multi_exec("UPDATE vfile SET deleted=0 WHERE pathname=%Q", zPath);
    }
#endif
    else{
      doSkip = 1;
    }else{
      db_multi_exec(
        "INSERT INTO vfile(vid,deleted,rid,mrid,pathname)"
        "VALUES(%d,0,0,0,%Q)", vid, zPath);
        "INSERT INTO vfile(vid,deleted,rid,mrid,pathname,isexe,islink,mhash)"
        "VALUES(%d,0,0,0,%Q,%d,%d,NULL)",
        vid, zPath, isExe, isLink);
    }
    fossil_free(zFullname);
  }
  if( db_changes() && !doSkip ){
    printf("ADDED  %s\n", zPath);
    fossil_print("ADDED  %s\n", zPath);
    return 1;
  }else{
    fossil_print("SKIP   %s\n", zPath);
    return 0;
  }
  blob_reset(&pathname);
}

/*
** All content of the zDir directory to the SFILE table.
** Add all files in the sfile temp table.
**
** Automatically exclude the repository file and any other files
** with reserved names. Also exclude files that are beneath an
** existing symlink.
*/
static int add_files_in_sfile(int vid){
  const char *zRepo;        /* Name of the repository database file */
  int nAdd = 0;             /* Number of files added */
  int i;                    /* Loop counter */
void add_directory_content(const char *zDir){
  const char *zReserved;    /* Name of a reserved file */
  DIR *d;
  int origSize;
  struct dirent *pEntry;
  Blob path;

  blob_zero(&path);
  blob_append(&path, zDir, -1);
  origSize = blob_size(&path);
  Blob repoName;            /* Treename of the repository */
  Stmt loop;                /* SQL to loop over all files to add */
  int (*xCmp)(const char*,const char*);

  if( !file_tree_name(g.zRepositoryName, &repoName, 0, 0) ){
    blob_zero(&repoName);
    zRepo = "";
  }else{
    zRepo = blob_str(&repoName);
  }
  if( filenames_are_case_sensitive() ){
    xCmp = fossil_strcmp;
  }else{
    xCmp = fossil_stricmp;
  }
  db_prepare(&loop,
     "SELECT pathname FROM sfile"
     " WHERE pathname NOT IN ("
       "SELECT sfile.pathname FROM vfile, sfile"
       " WHERE vfile.islink"
       "   AND NOT vfile.deleted"
       "   AND sfile.pathname>(vfile.pathname||'/')"
       "   AND sfile.pathname<(vfile.pathname||'0'))"
     " ORDER BY pathname");
  d = opendir(zDir);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      char *zPath;
  while( db_step(&loop)==SQLITE_ROW ){
    const char *zToAdd = db_column_text(&loop, 0);
      if( pEntry->d_name[0]=='.' ){
        if( !includeDotFiles ) continue;
        if( pEntry->d_name[1]==0 ) continue;
    if( fossil_strcmp(zToAdd, zRepo)==0 ) continue;
        if( pEntry->d_name[1]=='.' && pEntry->d_name[2]==0 ) continue;
      }
      blob_appendf(&path, "/%s", pEntry->d_name);
      zPath = blob_str(&path);
      if( file_isdir(zPath)==1 ){
    if( strchr(zToAdd,'/') ){
      if( file_is_reserved_name(zToAdd, -1) ) continue;
        add_directory_content(zPath);
      }else if( file_isfile(zPath) ){
        db_multi_exec("INSERT INTO sfile VALUES(%Q)", zPath);
    }else{
      for(i=0; (zReserved = fossil_reserved_name(i, 0))!=0; i++){
        if( xCmp(zToAdd, zReserved)==0 ) break;
      }
      blob_resize(&path, origSize);
      if( zReserved ) continue;
    }
    nAdd += add_one_file(zToAdd, vid);
  }
  closedir(d);
  blob_reset(&path);
  db_finalize(&loop);
  blob_reset(&repoName);
  return nAdd;
}

/*
** Resets the ADDED/DELETED state of a check-out, such that all
** newly-added (but not yet committed) files are no longer added and
** newly-removed (but not yet committed) files are no longer
** removed. If bIsAdd is true, it operates on the "add" state, else it
** operates on the "rm" state.
** Add all content of a directory.
**
** If bDryRun is true it outputs what it would have done, but does not
** actually do it. In this case it rolls back the transaction it
** starts (so don't start a transaction before calling this).
**
** If bVerbose is true it outputs the name of each reset entry.
**
** This is intended to be called only in the context of the
** add/rm/addremove commands, after a call to verify_all_options().
**
** Un-added files are not modified but any un-rm'd files which are
** missing from the check-out are restored from the repo. un-rm'd files
** which exist in the check-out are left as-is, rather than restoring
** them using vfile_to_disk(), to avoid overwriting any local changes
** made to those files.
*/
void add_directory(const char *zDir, int vid, Blob *pOmit){
  Stmt q;
  add_directory_content(zDir);
  db_prepare(&q, "SELECT x FROM sfile ORDER BY x");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    add_one_file(zName, vid, pOmit);
  }
  db_finalize(&q);
  db_multi_exec("DELETE FROM sfile");
}
static void addremove_reset(int bIsAdd, int bDryRun, int bVerbose){
  int nReset = 0; /* # of entries which get reset */
  Stmt stmt;      /* vfile loop query */

  db_begin_transaction();
  db_prepare(&stmt, "SELECT id, pathname FROM vfile "
                    "WHERE %s ORDER BY pathname",
                    bIsAdd==0 ? "deleted<>0" : "rid=0"/*safe-for-%s*/);
  while( db_step(&stmt)==SQLITE_ROW ){
    /* This loop exists only so we can restore the contents of un-rm'd
    ** files and support verbose mode. All manipulation of vfile's
    ** contents happens after the loop. For the ADD case in non-verbose
    ** mode we "could" skip this loop entirely.
    */
    int const id = db_column_int(&stmt, 0);
    char const * zPathname = db_column_text(&stmt, 1);
    Blob relName = empty_blob;
    if(bIsAdd==0 || bVerbose!=0){
      /* Make filename relative... */
      char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
      file_relative_name(zFullName, &relName, 0);
      fossil_free(zFullName);
    }
    if(bIsAdd==0){
      /* Restore contents of missing un-rm'd files. We don't do this
      ** unconditionally because we might cause data loss if a file
      ** is modified, rm'd, then un-rm'd.
      */
      ++nReset;
      if(!file_isfile_or_link(blob_str(&relName))){
        if(bDryRun==0){
          vfile_to_disk(0, id, 0, 0);
          if(bVerbose){
            fossil_print("Restored missing file: %b\n", &relName);
          }
        }else{
          fossil_print("Dry-run: not restoring missing file: %b\n", &relName);
        }
      }
      if(bVerbose){
        fossil_print("Un-removed: %b\n", &relName);
      }
    }else{
      /* un-add... */
      ++nReset;
      if(bVerbose){
        fossil_print("Un-added: %b\n", &relName);
      }
    }
    blob_reset(&relName);
  }
  db_finalize(&stmt);
  if(nReset>0){
    if(bIsAdd==0){
      if(bDryRun==0){
        db_exec_sql("UPDATE vfile SET deleted=0 WHERE deleted<>0");
      }
      fossil_print("Un-removed %d file(s).\n", nReset);
    }else{
      if(bDryRun==0){
        db_exec_sql("DELETE FROM vfile WHERE rid=0");
      }
      fossil_print("Un-added %d file(s).\n", nReset);
    }
  }
  db_end_transaction(bDryRun ? 1 : 0);
}


/*
** COMMAND: add
**
** Usage: %fossil add FILE...
** Usage: %fossil add ?OPTIONS? FILE1 ?FILE2 ...?
**
** Make arrangements to add one or more files to the current checkout
** at the next commit.
** Make arrangements to add one or more files or directories to the
** current check-out at the next [[commit]].
**
** When adding files recursively, filenames that begin with "." are
** excluded by default.  To include such files, add the "--dotfiles"
** option to the command-line.
** When adding files or directories recursively, filenames that begin
** with "." are excluded by default.  To include such files, add
** the "--dotfiles" option to the command-line.
**
** The --ignore and --clean options are comma-separated lists of glob patterns
** for files to be excluded.  Example:  '*.o,*.obj,*.exe'  If the --ignore
** option does not appear on the command line then the "ignore-glob" setting
** is used.  If the --clean option does not appear on the command line then
** the "clean-glob" setting is used.
**
** If files are attempted to be added explicitly on the command line which
** match "ignore-glob", a confirmation is asked first. This can be prevented
** using the -f|--force option.
**
** The --case-sensitive option determines whether or not filenames should
** be treated case sensitive or not. If the option is not given, the default
** depends on the global setting, or the operating system default, if not set.
**
** Options:
**    --case-sensitive BOOL   Override the case-sensitive setting
**    --dotfiles              Include files beginning with a dot (".")
**    -f|--force              Add files without prompting
**    --ignore CSG            Ignore unmanaged files matching patterns from
**                            the Comma Separated Glob (CSG) pattern list
**    --clean CSG             Also ignore files matching patterns from
**                            the Comma Separated Glob (CSG) list
**    --reset                 Reset the ADDED state of a check-out, such
**                            that all newly-added (but not yet committed)
**                            files are no longer added. No flags other
**                            than --verbose and --dry-run may be used
**                            with --reset.
**    --allow-reserved        Permit filenames which are reserved on
**                            Windows platforms. Such files cannot be
**                            checked out on Windows, so use with care.
**
** The following options are only valid with --reset:
**    -v|--verbose            Output information about each --reset file
**    -n|--dry-run            Display instead of run actions
**
** See also: [[addremove]], [[rm]]
*/
void add_cmd(void){
  int i;
  int vid;
  Blob repo;

  includeDotFiles = find_option("dotfiles",0,0)!=0;
  int i;                     /* Loop counter */
  int vid;                   /* Currently checked-out version */
  int nRoot;                 /* Full path characters in g.zLocalRoot */
  const char *zCleanFlag;    /* The --clean option or clean-glob setting */
  const char *zIgnoreFlag;   /* The --ignore option or ignore-glob setting */
  Glob *pIgnore, *pClean;    /* Ignore everything matching the glob patterns */
  unsigned scanFlags = 0;    /* Flags passed to vfile_scan() */
  int forceFlag;
  int allowReservedFlag = 0; /* --allow-reserved flag */

  if(0!=find_option("reset",0,0)){
    int const verboseFlag = find_option("verbose","v",0)!=0;
    int const dryRunFlag = find_option("dry-run","n",0)!=0;
    db_must_be_within_tree();
    verify_all_options();
    addremove_reset(1, dryRunFlag, verboseFlag);
    return;
  }

  zCleanFlag = find_option("clean",0,1);
  zIgnoreFlag = find_option("ignore",0,1);
  forceFlag = find_option("force","f",0)!=0;
  if( find_option("dotfiles",0,0)!=0 ) scanFlags |= SCAN_ALL;
  allowReservedFlag = find_option("allow-reserved",0,0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  db_must_be_within_tree();
  vid = db_lget_int("checkout",0);
  if( vid==0 ){
  if( zCleanFlag==0 ){
    fossil_panic("no checkout to add to");
    zCleanFlag = db_get("clean-glob", 0);
  }
  db_begin_transaction();
  if( !file_tree_name(g.zRepositoryName, &repo, 0) ){
    blob_zero(&repo);
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  if( db_get_boolean("dotfiles", 0) ) scanFlags |= SCAN_ALL;
  vid = db_lget_int("checkout",0);
  db_begin_transaction();
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  db_multi_exec("CREATE TEMP TABLE sfile(pathname TEXT PRIMARY KEY %s)",
#ifdef __MINGW32__
  db_multi_exec(
     "CREATE INDEX IF NOT EXISTS vfile_pathname "
     "  ON vfile(pathname COLLATE nocase)"
  );
#endif
                filename_collation());
  pClean = glob_create(zCleanFlag);
  pIgnore = glob_create(zIgnoreFlag);
  nRoot = strlen(g.zLocalRoot);

  /* Load the names of all files that are to be added into sfile temp table */
  for(i=2; i<g.argc; i++){
    char *zName;
    int isDir;
    Blob fullName = empty_blob;

    /* file_tree_name() throws a fatal error if g.argv[i] is outside of the
    ** check-out. */
    file_tree_name(g.argv[i], &fullName, 0, 1);
    blob_reset(&fullName);
    file_canonical_name(g.argv[i], &fullName, 0);
    zName = mprintf("%/", g.argv[i]);
    isDir = file_isdir(zName);
    zName = blob_str(&fullName);
    isDir = file_isdir(zName, RepoFILE);
    if( isDir==1 ){
      add_directory(zName, vid, &repo);
      vfile_scan(&fullName, nRoot-1, scanFlags, pClean, pIgnore, RepoFILE);
    }else if( isDir==0 ){
      fossil_fatal("not found: %s", zName);
    }else if( access(zName, R_OK) ){
      fossil_fatal("cannot open %s", zName);
    }else{
      add_one_file(zName, vid, &repo);
    }
    free(zName);
  }
      fossil_warning("not found: %s", zName);
    }else{
      char *zTreeName = file_case_preferred_name(g.zLocalRoot,&zName[nRoot]);
      if( !forceFlag && glob_match(pIgnore, zTreeName) ){
        Blob ans;
        char cReply;
        char *prompt = mprintf("file \"%s\" matches \"ignore-glob\".  "
                               "Add it (a=all/y/N)? ", zTreeName);
        prompt_user(prompt, &ans);
        fossil_free(prompt);
        cReply = blob_str(&ans)[0];
        blob_reset(&ans);
        if( cReply=='a' || cReply=='A' ){
          forceFlag = 1;
        }else if( cReply!='y' && cReply!='Y' ){
          blob_reset(&fullName);
          continue;
        }
      }
      db_multi_exec(
         "INSERT OR IGNORE INTO sfile(pathname) VALUES(%Q)",
         zTreeName
      );
      fossil_free(zTreeName);
    }
    blob_reset(&fullName);
  }
  glob_free(pIgnore);
  glob_free(pClean);

  /** Check for Windows-reserved names and warn or exit, as
   ** appopriate. Note that the 'add' internal machinery already
   ** _silently_ skips over any names for which
   ** file_is_reserved_name() returns true or which is in the
   ** fossil_reserved_name() list. We do not need to warn for those,
   ** as they're outright verboten. */
  if(db_exists("SELECT 1 FROM sfile WHERE win_reserved(pathname)")){
    int reservedCount = 0;
    Stmt q = empty_Stmt;
    db_prepare(&q,"SELECT pathname FROM sfile "
                  "WHERE win_reserved(pathname)");
    while( db_step(&q)==SQLITE_ROW ){
      const char * zName = db_column_text(&q, 0);
      ++reservedCount;
      if(allowReservedFlag){
        fossil_warning("WARNING: Windows-reserved "
                       "filename: %s", zName);
      }else{
        fossil_warning("ERROR: Windows-reserved filename: %s", zName);
      }
    }
    db_finalize(&q);
    if(allowReservedFlag==0){
      fossil_fatal("ERROR: %d Windows-reserved filename(s) added. "
                   "Use --allow-reserved to permit such names.",
                   reservedCount);
    }
  }
  add_files_in_sfile(vid);
  db_end_transaction(0);
}

/*
** This function adds a file to list of files to delete from disk after
** the other actions required for the parent operation have completed
** successfully.  The first time it is called for the current process,
** it creates a temporary table named "fremove", to keep track of these
** Remove all contents of zDir
** files.
*/
static void add_file_to_remove(
void del_directory_content(const char *zDir){
  const char *zOldName /* The old name of the file on disk. */
  DIR *d;
  int origSize;
){
  static int tableCreated = 0;
  struct dirent *pEntry;
  Blob path;

  blob_zero(&path);
  Blob fullOldName;
  if( !tableCreated ){
    db_multi_exec("CREATE TEMP TABLE fremove(x TEXT PRIMARY KEY %s)",
                  filename_collation());
    tableCreated = 1;
  }
  file_tree_name(zOldName, &fullOldName, 1, 1);
  db_multi_exec("INSERT INTO fremove VALUES('%q');", blob_str(&fullOldName));
  blob_append(&path, zDir, -1);
  origSize = blob_size(&path);
  blob_reset(&fullOldName);
  d = opendir(zDir);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      char *zPath;
      if( pEntry->d_name[0]=='.'){
        if( !includeDotFiles ) continue;
        if( pEntry->d_name[1]==0 ) continue;
        if( pEntry->d_name[1]=='.' && pEntry->d_name[2]==0 ) continue;
      }
      blob_appendf(&path, "/%s", pEntry->d_name);
}

      zPath = blob_str(&path);
      if( file_isdir(zPath)==1 ){
        del_directory_content(zPath);
      }else if( file_isfile(zPath) ){
        char *zFilePath;
        Blob pathname;
        file_tree_name(zPath, &pathname, 1);
/*
** This function deletes files from the check-out, using the file names
** contained in the temporary table "fremove".  The temporary table is
** created on demand by the add_file_to_remove() function.
**
** If dryRunFlag is non-zero, no files will be removed; however, their
** names will still be output.
**
** The temporary table "fremove" is dropped after being processed.
*/
static void process_files_to_remove(
        zFilePath = blob_str(&pathname);
        if( !db_exists(
            "SELECT 1 FROM vfile WHERE pathname=%Q AND NOT deleted", zFilePath)
        ){
  int dryRunFlag /* Zero to actually operate on the file-system. */
){
          printf("SKIPPED  %s\n", zPath);
        }else{
          db_multi_exec("UPDATE vfile SET deleted=1 WHERE pathname=%Q", zPath);
  Stmt remove;
  if( db_table_exists("temp", "fremove") ){
    db_prepare(&remove, "SELECT x FROM fremove ORDER BY x;");
    while( db_step(&remove)==SQLITE_ROW ){
      const char *zOldName = db_column_text(&remove, 0);
      if( !dryRunFlag ){
        file_delete(zOldName);
          printf("DELETED  %s\n", zPath);
        }
        blob_reset(&pathname);
      }
      blob_resize(&path, origSize);
    }
      }
      fossil_print("DELETED_FILE %s\n", zOldName);
    }
    db_finalize(&remove);
    db_multi_exec("DROP TABLE fremove;");
  }
  }
  closedir(d);
  blob_reset(&path);
}

/*
** COMMAND: rm
** COMMAND: del
** COMMAND: delete
** COMMAND: forget*
**
** Usage: %fossil rm FILE...
** Usage: %fossil rm|delete|forget FILE1 ?FILE2 ...?
**    or: %fossil del FILE...
**
** Remove one or more files from the tree.
** Remove one or more files or directories from the repository.
**
** This command does not remove the files from disk.  It just marks the
** files as no longer being part of the project.  In other words, future
** changes to the named files will not be versioned.
** The 'rm' and 'delete' commands do NOT normally remove the files from
** disk.  They just mark the files as no longer being part of the project.
** In other words, future changes to the named files will not be versioned.
** However, the default behavior of this command may be overridden via the
** command line options listed below and/or the 'mv-rm-files' setting.
**
** The 'forget' command never removes files from disk, even when the command
** line options and/or the 'mv-rm-files' setting would otherwise require it
** to do so.
**
** WARNING: If the "--hard" option is specified -OR- the "mv-rm-files"
**          setting is non-zero, files WILL BE removed from disk as well.
**          This does NOT apply to the 'forget' command.
**
** Options:
**   --soft                  Skip removing files from the check-out.
**                           This supersedes the --hard option.
**   --hard                  Remove files from the check-out
**   --case-sensitive BOOL   Override the case-sensitive setting
**   -n|--dry-run            If given, display instead of run actions.
**   --reset                 Reset the DELETED state of a check-out, such
**                           that all newly-rm'd (but not yet committed)
**                           files are no longer removed. No flags other
**                           than --verbose or --dry-run may be used with
**                           --reset.
**   -v|--verbose            Outputs information about each --reset file.
**                           Only usable with --reset.
**
** See also: [[addremove]], [[add]]
*/
void del_cmd(void){
void delete_cmd(void){
  int i;
  int removeFiles;
  int dryRunFlag = find_option("dry-run","n",0)!=0;
  int vid;
  int softFlag;
  int hardFlag;
  Stmt loop;

  if(0!=find_option("reset",0,0)){
    int const verboseFlag = find_option("verbose","v",0)!=0;
  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_panic("no checkout to remove from");
  }
    db_must_be_within_tree();
    verify_all_options();
    addremove_reset(0, dryRunFlag, verboseFlag);
    return;
  }

  softFlag = find_option("soft",0,0)!=0;
  hardFlag = find_option("hard",0,0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  db_must_be_within_tree();
  db_begin_transaction();
  if( g.argv[1][0]=='f' ){ /* i.e. "forget" */
    removeFiles = 0;
  }else if( softFlag ){
    removeFiles = 0;
  }else if( hardFlag ){
    removeFiles = 1;
  }else{
    removeFiles = db_get_boolean("mv-rm-files",0);
  }
  db_multi_exec("CREATE TEMP TABLE sfile(pathname TEXT PRIMARY KEY %s)",
                filename_collation());
  for(i=2; i<g.argc; i++){
    Blob treeName;
    char *zName;
    char *zTreeName;

    zName = mprintf("%/", g.argv[i]);
    if( file_isdir(zName) == 1 ){
      del_directory_content(zName);
    file_tree_name(g.argv[i], &treeName, 0, 1);
    zTreeName = blob_str(&treeName);
    db_multi_exec(
    } else {
      char *zPath;
      Blob pathname;
      file_tree_name(zName, &pathname, 1);
      zPath = blob_str(&pathname);
       "INSERT OR IGNORE INTO sfile"
       " SELECT pathname FROM vfile"
       "  WHERE (pathname=%Q %s"
       "     OR (pathname>'%q/' %s AND pathname<'%q0' %s))"
      if( !db_exists(
               "SELECT 1 FROM vfile WHERE pathname=%Q AND NOT deleted", zPath) ){
       "    AND NOT deleted",
        fossil_fatal("not in the repository: %s", zName);
      }else{
        db_multi_exec("UPDATE vfile SET deleted=1 WHERE pathname=%Q", zPath);
        printf("DELETED  %s\n", zPath);
       zTreeName, filename_collation(), zTreeName,
       filename_collation(), zTreeName, filename_collation()
    );
      }
      blob_reset(&pathname);
    }
    free(zName);
    blob_reset(&treeName);
  }

  db_prepare(&loop, "SELECT pathname FROM sfile");
  while( db_step(&loop)==SQLITE_ROW ){
    fossil_print("DELETED %s\n", db_column_text(&loop, 0));
    if( removeFiles ) add_file_to_remove(db_column_text(&loop, 0));
  }
  db_finalize(&loop);
  if( !dryRunFlag ){
  db_multi_exec("DELETE FROM vfile WHERE deleted AND rid=0");
    db_multi_exec(
      "UPDATE vfile SET deleted=1 WHERE pathname IN sfile;"
      "DELETE FROM vfile WHERE rid=0 AND deleted;"
    );
  }
  db_end_transaction(0);
  if( removeFiles ) process_files_to_remove(dryRunFlag);
}

/*
** Capture the command-line --case-sensitive option.
*/
static const char *zCaseSensitive = 0;
void capture_case_sensitive_option(void){
  if( zCaseSensitive==0 ){
    zCaseSensitive = find_option("case-sensitive",0,1);
  }
}

/*
** This routine determines if files should be case-sensitive or not.
** In other words, this routine determines if two filenames that
** differ only in case should be considered the same name or not.
**
** The case-sensitive setting determines the default value.  If
** the case-sensitive setting is undefined, then case sensitivity
** defaults off for Cygwin, Mac and Windows and on for all other unix.
** If case-sensitivity is enabled in the windows kernel, the Cygwin port
** of fossil.exe can detect that, and modifies the default to 'on'.
**
** The "--case-sensitive BOOL" command-line option overrides any
** setting.
*/
int filenames_are_case_sensitive(void){
  static int caseSensitive;
  static int once = 1;

  if( once ){
    once = 0;
    if( zCaseSensitive ){
      caseSensitive = is_truth(zCaseSensitive);
    }else{
#if defined(_WIN32) || defined(__DARWIN__) || defined(__APPLE__)
      caseSensitive = 0;  /* Mac and Windows */
#elif defined(__CYGWIN__)
      /* Cygwin can be configured to be case-sensitive, check this. */
      void *hKey;
      int value = 1, length = sizeof(int);
      caseSensitive = 0;  /* Cygwin default */
      if( (RegOpenKeyExW((void *)0x80000002, L"SYSTEM\\CurrentControlSet\\"
          "Control\\Session Manager\\kernel", 0, 1, (void *)&hKey)
          == 0) && (RegQueryValueExW(hKey, L"obcaseinsensitive",
          0, NULL, (void *)&value, (void *)&length) == 0) && !value ){
        caseSensitive = 1;
      }
#else
      caseSensitive = 1;  /* Unix */
#endif
      caseSensitive = db_get_boolean("case-sensitive",caseSensitive);
    }
    if( !caseSensitive && g.localOpen ){
      db_multi_exec(
         "CREATE INDEX IF NOT EXISTS localdb.vfile_nocase"
         "  ON vfile(pathname COLLATE nocase)"
      );
    }
  }
  return caseSensitive;
}

/*
** Return one of two things:
**
**   ""                 (empty string) if filenames are case sensitive
**
**   "COLLATE nocase"   if filenames are not case sensitive.
*/
const char *filename_collation(void){
  return filenames_are_case_sensitive() ? "" : "COLLATE nocase";
}

/*
** COMMAND: addremove
**
** Usage: %fossil addremove ?OPTIONS?
**
** Do all necessary "[[add]]" and "[[rm]]" commands to synchronize the
** repository with the content of the working check-out:
**
**  *  All files in the check-out but not in the repository (that is,
**     all files displayed using the "extras" command) are added as
**     if by the "[[add]]" command.
**
**  *  All files in the repository but missing from the check-out (that is,
**     all files that show as MISSING with the "status" command) are
**     removed as if by the "[[rm]]" command.
**
** The command does not "[[commit]]".  You must run the "[[commit]]" separately
** as a separate step.
**
** Files and directories whose names begin with "." are ignored unless
** the --dotfiles option is used.
**
** The --ignore option overrides the "ignore-glob" setting, as do the
** --case-sensitive option with the "case-sensitive" setting and the
** --clean option with the "clean-glob" setting. See the documentation
** on the "settings" command for further information.
**
** The -n|--dry-run option shows what would happen without actually doing
** anything.
**
** This command can be used to track third party software.
**
** Options:
**   --case-sensitive BOOL   Override the case-sensitive setting
**   --dotfiles              Include files beginning with a dot (".")
**   --ignore CSG            Ignore unmanaged files matching patterns from
**                           the Comma Separated Glob (CSG) list
**   --clean CSG             Also ignore files matching patterns from
**                           the Comma Separated Glob (CSG) list
**   -n|--dry-run            If given, display instead of run actions
**   --reset                 Reset the ADDED/DELETED state of a check-out,
**                           such that all newly-added (but not yet committed)
**                           files are no longer added and all newly-removed
**                           (but not yet committed) files are no longer
**                           removed. No flags other than --verbose and
**                           --dry-run may be used with --reset.
**   -v|--verbose            Outputs information about each --reset file.
**                           Only usable with --reset.
**
** See also: [[add]], [[rm]]
*/
void addremove_cmd(void){
  Blob path;
  const char *zCleanFlag;
  const char *zIgnoreFlag;
  unsigned scanFlags;
  int dryRunFlag = find_option("dry-run","n",0)!=0;
  int n;
  Stmt q;
  int vid;
  int nAdd = 0;
  int nDelete = 0;
  Glob *pIgnore, *pClean;

  if( !dryRunFlag ){
    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }

  if(0!=find_option("reset",0,0)){
    int const verboseFlag = find_option("verbose","v",0)!=0;
    db_must_be_within_tree();
    verify_all_options();
    addremove_reset(0, dryRunFlag, verboseFlag);
    addremove_reset(1, dryRunFlag, verboseFlag);
    return;
  }

  zCleanFlag = find_option("clean",0,1);
  zIgnoreFlag = find_option("ignore",0,1);
  scanFlags = find_option("dotfiles",0,0)!=0 ? SCAN_ALL : 0;

  /* We should be done with options.. */
  verify_all_options();

  /* Fail if unprocessed arguments are present, in case user expect the
  ** addremove command to accept a list of file or directory.
  */
  if( g.argc>2 ){
    fossil_fatal(
        "%s: Can only work on the entire check-out, no arguments supported.",
        g.argv[1]);
  }
  db_must_be_within_tree();
  if( zCleanFlag==0 ){
    zCleanFlag = db_get("clean-glob", 0);
  }
  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  if( db_get_boolean("dotfiles", 0) ) scanFlags |= SCAN_ALL;
  vid = db_lget_int("checkout",0);
  db_begin_transaction();

  /* step 1:
  ** Populate the temp table "sfile" with the names of all unmanaged
  ** files currently in the check-out, except for files that match the
  ** --ignore or ignore-glob patterns and dot-files.  Then add all of
  ** the files in the sfile temp table to the set of managed files.
  */
  db_multi_exec("CREATE TEMP TABLE sfile(pathname TEXT PRIMARY KEY %s)",
                filename_collation());
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  /* now we read the complete file structure into a temp table */
  pClean = glob_create(zCleanFlag);
  pIgnore = glob_create(zIgnoreFlag);
  vfile_scan(&path, blob_size(&path), scanFlags, pClean, pIgnore, RepoFILE);
  glob_free(pIgnore);
  glob_free(pClean);
  nAdd = add_files_in_sfile(vid);

  /* step 2: search for missing files */
  db_prepare(&q,
      "SELECT pathname, %Q || pathname, deleted FROM vfile"
      " WHERE NOT deleted"
      " ORDER BY 1",
      g.zLocalRoot
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFile;
    const char *zPath;

    zFile = db_column_text(&q, 0);
    zPath = db_column_text(&q, 1);
    if( !file_isfile_or_link(zPath) ){
      if( !dryRunFlag ){
        db_multi_exec("UPDATE vfile SET deleted=1 WHERE pathname=%Q", zFile);
      }
      fossil_print("DELETED  %s\n", zFile);
      nDelete++;
    }
  }
  db_finalize(&q);
  /* show command summary */
  fossil_print("added %d files, deleted %d files\n", nAdd, nDelete);
  if(dryRunFlag!=0){
    fossil_print("Dry-run mode: no changes were made.\n");
  }
  db_end_transaction(dryRunFlag);
}

/*
** Rename a single file.
**
** The original name of the file is zOrig.  The new filename is zNew.
*/
static void mv_one_file(int vid, const char *zOrig, const char *zNew){
  printf("RENAME %s %s\n", zOrig, zNew);
  db_multi_exec(
    "UPDATE vfile SET pathname='%s' WHERE pathname='%s' AND vid=%d",
    zNew, zOrig, vid
  );
}

static void mv_one_file(
  int vid,
  const char *zOrig,
  const char *zNew,
  int dryRunFlag
){
  int x = db_int(-1, "SELECT deleted FROM vfile WHERE pathname=%Q %s",
                         zNew, filename_collation());
  if( x>=0 ){
    if( x==0 ){
      if( !filenames_are_case_sensitive() && fossil_stricmp(zOrig,zNew)==0 ){
        /* Case change only */
      }else{
        fossil_fatal("cannot rename '%s' to '%s' since another file named '%s'"
                     " is currently under management", zOrig, zNew, zNew);
      }
    }else{
      fossil_fatal("cannot rename '%s' to '%s' since the delete of '%s' has "
                   "not yet been committed", zOrig, zNew, zNew);
    }
  }
  fossil_print("RENAME %s %s\n", zOrig, zNew);
  if( !dryRunFlag ){
    db_multi_exec(
      "UPDATE vfile SET pathname='%q' WHERE pathname='%q' %s AND vid=%d",
      zNew, zOrig, filename_collation(), vid
    );
  }
}

/*
** This function adds a file to list of files to move on disk after the
** other actions required for the parent operation have completed
** successfully.  The first time it is called for the current process,
** it creates a temporary table named "fmove", to keep track of these
** files.
*/
static void add_file_to_move(
  const char *zOldName, /* The old name of the file on disk. */
  const char *zNewName  /* The new name of the file on disk. */
){
  static int tableCreated = 0;
  Blob fullOldName;
  Blob fullNewName;
  char *zOld, *zNew;
  if( !tableCreated ){
    db_multi_exec("CREATE TEMP TABLE fmove(x TEXT PRIMARY KEY %s, y TEXT %s)",
                  filename_collation(), filename_collation());
    tableCreated = 1;
  }
  file_tree_name(zOldName, &fullOldName, 1, 1);
  zOld = blob_str(&fullOldName);
  file_tree_name(zNewName, &fullNewName, 1, 1);
  zNew = blob_str(&fullNewName);
  if( filenames_are_case_sensitive() || fossil_stricmp(zOld,zNew)!=0 ){
    db_multi_exec("INSERT INTO fmove VALUES('%q','%q');", zOld, zNew);
  }
  blob_reset(&fullNewName);
  blob_reset(&fullOldName);
}

/*
** This function moves files within the check-out, using the file names
** contained in the temporary table "fmove".  The temporary table is
** created on demand by the add_file_to_move() function.
**
** If dryRunFlag is non-zero, no files will be moved; however, their
** names will still be output.
**
** The temporary table "fmove" is dropped after being processed.
*/
static void process_files_to_move(
  int dryRunFlag /* Zero to actually operate on the file-system. */
){
  Stmt move;
  if( db_table_exists("temp", "fmove") ){
    db_prepare(&move, "SELECT x, y FROM fmove ORDER BY x;");
    while( db_step(&move)==SQLITE_ROW ){
      const char *zOldName = db_column_text(&move, 0);
      const char *zNewName = db_column_text(&move, 1);
      if( !dryRunFlag ){
        int isOldDir = file_isdir(zOldName, RepoFILE);
        if( isOldDir==1 ){
          int isNewDir = file_isdir(zNewName, RepoFILE);
          if( isNewDir==0 ){
            file_rename(zOldName, zNewName, isOldDir, isNewDir);
          }
        }else{
          if( file_islink(zOldName) ){
            symlink_copy(zOldName, zNewName);
          }else{
            file_copy(zOldName, zNewName);
          }
          file_delete(zOldName);
        }
      }
      fossil_print("MOVED_FILE %s\n", zOldName);
    }
    db_finalize(&move);
    db_multi_exec("DROP TABLE fmove;");
  }
}

/*
** COMMAND: mv
** COMMAND: rename
** COMMAND: rename*
**
** Usage: %fossil mv|rename OLDNAME NEWNAME
**    or: %fossil mv|rename OLDNAME... DIR
**
** Move or rename one or more files within the tree
** Move or rename one or more files or directories within the repository tree.
** You can either rename a file or directory or move it to another subdirectory.
**
** This command does not rename the files on disk.  This command merely
** records the fact that filenames have changed so that appropriate notations
** can be made at the next commit/checkin.
** The 'mv' command does NOT normally rename or move the files on disk.
** This command merely records the fact that file names have changed so
** that appropriate notations can be made at the next [[commit]].
** However, the default behavior of this command may be overridden via
** command line options listed below and/or the 'mv-rm-files' setting.
**
** The 'rename' command never renames or moves files on disk, even when the
** command line options and/or the 'mv-rm-files' setting would otherwise
** require it to do so.
**
** WARNING: If the "--hard" option is specified -OR- the "mv-rm-files"
**          setting is non-zero, files WILL BE renamed or moved on disk
**          as well.  This does NOT apply to the 'rename' command.
**
** Options:
**   --soft                    Skip moving files within the check-out.
**                             This supersedes the --hard option.
**   --hard                    Move files within the check-out
**   --case-sensitive BOOL     Override the case-sensitive setting
**   -n|--dry-run              If given, display instead of run actions
**
** See also: [[changes]], [[status]]
*/
void mv_cmd(void){
  int i;
  int vid;
  int moveFiles;
  int dryRunFlag;
  int softFlag;
  int hardFlag;
  int origType;
  int destType;
  char *zDest;
  Blob dest;
  Stmt q;

  db_must_be_within_tree();
  dryRunFlag = find_option("dry-run","n",0)!=0;
  softFlag = find_option("soft",0,0)!=0;
  hardFlag = find_option("hard",0,0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_panic("no checkout rename files in");
    fossil_fatal("no check-out in which to rename files");
  }
  if( g.argc<4 ){
    usage("OLDNAME NEWNAME");
  }
  zDest = g.argv[g.argc-1];
  zDest = file_case_preferred_name(".",g.argv[g.argc-1]);
  db_begin_transaction();
  if( g.argv[1][0]=='r' ){ /* i.e. "rename" */
    moveFiles = 0;
  }else if( softFlag ){
    moveFiles = 0;
  }else if( hardFlag ){
    moveFiles = 1;
  }else{
    moveFiles = db_get_boolean("mv-rm-files",0);
  }
  file_tree_name(zDest, &dest, 1);
  file_tree_name(zDest, &dest, 0, 1);
  db_multi_exec(
    "UPDATE vfile SET origname=pathname WHERE origname IS NULL;"
  );
  db_multi_exec(
    "CREATE TEMP TABLE mv(f TEXT UNIQUE ON CONFLICT IGNORE, t TEXT);"
  );
  if( file_isdir(zDest)!=1 ){
    Blob orig;
    if( g.argc!=4 ){
      usage("OLDNAME NEWNAME");
    }
    file_tree_name(g.argv[2], &orig, 1);
  if( g.argc!=4 ){
    origType = -1;
  }else{
    origType = (file_isdir(g.argv[2], RepoFILE) == 1);
  }
  destType = file_isdir(zDest, RepoFILE);
  if( origType==-1 && destType!=1 ){
    usage("OLDNAME NEWNAME");
  }else if( origType==1 && destType==2 ){
    fossil_fatal("cannot rename '%s' to '%s' since another file named"
                 " '%s' exists", g.argv[2], zDest, zDest);
  }else if( origType==0 && destType!=1 ){
    Blob orig;
    file_tree_name(g.argv[2], &orig, 0, 1);
    db_multi_exec(
      "INSERT INTO mv VALUES(%B,%B)", &orig, &dest
    );
  }else{
    if( blob_eq(&dest, ".") ){
      blob_reset(&dest);
    }else{
      blob_append(&dest, "/", 1);
    }
    for(i=2; i<g.argc-1; i++){
      Blob orig;
      char *zOrig;
      int nOrig;
      file_tree_name(g.argv[i], &orig, 1);
      file_tree_name(g.argv[i], &orig, 0, 1);
      zOrig = blob_str(&orig);
      nOrig = blob_size(&orig);
      db_prepare(&q,
         "SELECT pathname FROM vfile"
         " WHERE vid=%d"
         "   AND (pathname='%s' OR pathname GLOB '%s/*')"
         "  AND (pathname='%q' %s OR (pathname>'%q/' %s AND pathname<'%q0' %s))"
         " ORDER BY 1",
         vid, zOrig, zOrig
         vid, zOrig, filename_collation(), zOrig, filename_collation(),
         zOrig, filename_collation()
      );
      while( db_step(&q)==SQLITE_ROW ){
        const char *zPath = db_column_text(&q, 0);
        int nPath = db_column_bytes(&q, 0);
        const char *zTail;
        if( nPath==nOrig ){
          zTail = file_tail(zPath);
        }else if( origType!=0 && destType==1 ){
          zTail = &zPath[nOrig-strlen(file_tail(zOrig))];
        }else{
          zTail = &zPath[nOrig+1];
        }
        db_multi_exec(
          "INSERT INTO mv VALUES('%s','%s%s')",
          "INSERT INTO mv VALUES('%q','%q%q')",
          zPath, blob_str(&dest), zTail
        );
      }
      db_finalize(&q);
    }
  }
  db_prepare(&q, "SELECT f, t FROM mv ORDER BY f");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFrom = db_column_text(&q, 0);
    const char *zTo = db_column_text(&q, 1);
    mv_one_file(vid, zFrom, zTo);
    mv_one_file(vid, zFrom, zTo, dryRunFlag);
    if( moveFiles ) add_file_to_move(zFrom, zTo);
  }
  db_finalize(&q);
  undo_reset();
  db_end_transaction(0);
  if( moveFiles ) process_files_to_move(dryRunFlag);
  fossil_free(zDest);
}

/*
** Function for stash_apply to be able to restore a file and indicate
** newly ADDED state.
*/
int stash_add_files_in_sfile(int vid){
  return add_files_in_sfile(vid);
}
Added src/ajax.c.








































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains shared Ajax-related code for /fileedit, the wiki/forum
** editors, and friends.
*/
#include "config.h"
#include "ajax.h"
#include <assert.h>
#include <stdarg.h>

#if INTERFACE
/* enum ajax_render_preview_flags: */
#define AJAX_PREVIEW_LINE_NUMBERS 1
/* enum ajax_render_modes: */
#define AJAX_RENDER_GUESS 0   /* Guess rendering mode based on mimetype. */
/* GUESS must be 0. All others have unspecified values. */
#define AJAX_RENDER_PLAIN_TEXT 1  /* Render as plain text. */
#define AJAX_RENDER_HTML_IFRAME 2 /* Render as HTML inside an IFRAME. */
#define AJAX_RENDER_HTML_INLINE 3 /* Render as HTML without an IFRAME. */
#define AJAX_RENDER_WIKI 4        /* Render as wiki/markdown. */
#endif

/*
** Emits JS code which initializes the
** fossil.page.previewModes object to a map of AJAX_RENDER_xxx values
** and symbolic names for use by client-side scripts.
**
** If addScriptTag is true then the output is wrapped in a SCRIPT tag
** with the current nonce, else no SCRIPT tag is emitted.
**
** Requires that builtin_emit_script_fossil_bootstrap() has already been
** called in order to initialize the window.fossil.page object.
*/
void ajax_emit_js_preview_modes(int addScriptTag){
  if(addScriptTag){
    style_script_begin(__FILE__,__LINE__);
  }
  CX("fossil.page.previewModes={"
     "guess: %d, %d: 'guess', wiki: %d, %d: 'wiki',"
     "htmlIframe: %d, %d: 'htmlIframe', "
     "htmlInline: %d, %d: 'htmlInline', "
     "text: %d, %d: 'text'"
     "};\n",
     AJAX_RENDER_GUESS, AJAX_RENDER_GUESS,
     AJAX_RENDER_WIKI, AJAX_RENDER_WIKI,
     AJAX_RENDER_HTML_IFRAME, AJAX_RENDER_HTML_IFRAME,
     AJAX_RENDER_HTML_INLINE, AJAX_RENDER_HTML_INLINE,
     AJAX_RENDER_PLAIN_TEXT, AJAX_RENDER_PLAIN_TEXT);
  if(addScriptTag){
    style_script_end();
  }
}

/*
** Returns a value from the ajax_render_modes enum, based on the
** given mimetype string (which may be NULL), defaulting to
** AJAX_RENDER_PLAIN_TEXT.
 */
int ajax_render_mode_for_mimetype(const char * zMimetype){
  int rc = AJAX_RENDER_PLAIN_TEXT;
  if( zMimetype ){
    if( fossil_strcmp(zMimetype, "text/html")==0 ){
      rc = AJAX_RENDER_HTML_IFRAME;
    }else if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0
              || fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
      rc = AJAX_RENDER_WIKI;
    }
  }
  return rc;
}

/*
** Renders text/wiki content preview for various /ajax routes.
**
** pContent is text/wiki content to preview. zName is the name of the
** content, for purposes of determining the mimetype based on the
** extension (if NULL, mimetype text/plain is assumed). flags may be a
** bitmask of values from the ajax_render_preview_flags
** enum. *renderMode must specify the render mode to use. If
** *renderMode==AJAX_RENDER_GUESS then *renderMode gets set to the
** mode which is guessed at for the rendering (based on the mimetype).
**
** nIframeHeightEm is only used for the AJAX_RENDER_HTML_IFRAME
** renderMode, and specifies the height, in EM's, of the resulting
** iframe. If passed 0, it defaults to "some sane value."
*/
void ajax_render_preview(Blob * pContent, const char *zName,
                         int flags, int * renderMode,
                         int nIframeHeightEm){
  const char * zMime;

  zMime = zName ? mimetype_from_name(zName) : "text/plain";
  if(AJAX_RENDER_GUESS==*renderMode){
    *renderMode = ajax_render_mode_for_mimetype(zMime);
  }
  switch(*renderMode){
    case AJAX_RENDER_HTML_IFRAME:{
      char * z64 = encode64(blob_str(pContent), blob_size(pContent));
      CX("<iframe width='100%%' frameborder='0' "
         "marginwidth='0' style='height:%dem' "
         "marginheight='0' sandbox='allow-same-origin' "
         "src='data:text/html;base64,%z'"
         "></iframe>",
         nIframeHeightEm ? nIframeHeightEm : 40,
         z64);
      break;
    }
    case AJAX_RENDER_HTML_INLINE:{
      CX("%b",pContent);
      break;
    }
    case AJAX_RENDER_WIKI:
      safe_html_context(DOCSRC_FILE);
      wiki_render_by_mimetype(pContent, zMime);
      break;
    default:{
      const char *zContent = blob_str(pContent);
      if(AJAX_PREVIEW_LINE_NUMBERS & flags){
        output_text_with_line_numbers(zContent, blob_size(pContent),
                                      zName, "on", 0);
      }else{
        const char *zExt = strrchr(zName,'.');
        if(zExt && zExt[1]){
          CX("<pre><code class='language-%s'>%h</code></pre>",
             zExt+1, zContent);
        }else{
          CX("<pre>%h</pre>", zContent);
        }
      }
      break;
    }
  }
}

/*
** Renders diffs for ajax routes. pOrig is the "original" (v1) content
** and pContent is the locally-edited (v2) content. diffFlags is any
** set of flags suitable for passing to text_diff().
**
** zOrigHash, if not NULL, must be the SCM-side hash of pOrig's
** contents. If set, additional information may be built into
** the diff output to enable dynamic loading of additional
** diff context.
*/
void ajax_render_diff(Blob * pOrig, const char * zOrigHash,
                      Blob *pContent, u64 diffFlags){
  Blob out = empty_blob;
  DiffConfig DCfg;

  diff_config_init(&DCfg, diffFlags);
  DCfg.zLeftHash = zOrigHash;
  text_diff(pOrig, pContent, &out, &DCfg);
  if(blob_size(&out)==0){
    /* nothing to do */
  }else{
    CX("%b",&out);
  }
  blob_reset(&out);
}

/*
** Uses P(zKey) to fetch a CGI environment variable. If that var is
** NULL or starts with '0' or 'f' then this function returns false,
** else it returns true.
*/
int ajax_p_bool(char const *zKey){
  const char * zVal = P(zKey);
  return (!zVal || '0'==*zVal || 'f'==*zVal) ? 0 : 1;
}

/*
** Helper for /ajax routes. Clears the CGI content buffer, sets an
** HTTP error status code, and queues up a JSON response in the form
** of an object:
**
** {error: formatted message}
**
** If httpCode<=0 then it defaults to 500.
**
** After calling this, the caller should immediately return.
*/
void ajax_route_error(int httpCode, const char * zFmt, ...){
  Blob msg = empty_blob;
  Blob content = empty_blob;
  va_list vargs;
  va_start(vargs,zFmt);
  blob_vappendf(&msg, zFmt, vargs);
  va_end(vargs);
  blob_appendf(&content,"{\"error\":%!j}", blob_str(&msg));
  blob_reset(&msg);
  cgi_set_content(&content);
  cgi_set_status(httpCode>0 ? httpCode : 500, "Error");
  cgi_set_content_type("application/json");
}

/*
** Performs bootstrapping common to the /ajax/xyz AJAX routes, such as
** logging in the user.
**
** Returns false (0) if bootstrapping fails, in which case it has
** reported the error and the route should immediately return. Returns
** true on success.
**
** If requireWrite is true then write permissions are required.
** If requirePost is true then the request is assumed to be using
** POST'ed data and CSRF validation is performed.
**
*/
int ajax_route_bootstrap(int requireWrite, int requirePost){
  login_check_credentials();
  if( requireWrite!=0 && g.perm.Write==0 ){
    ajax_route_error(403,"Write permissions required.");
    return 0;
  }else if(0==cgi_csrf_safe(requirePost)){
    ajax_route_error(403,
                     "CSRF violation (make sure sending of HTTP "
                     "Referer headers is enabled for XHR "
                     "connections).");
    return 0;
  }
  return 1;
}

/*
** Helper for collecting filename/check-in request parameters.
**
** If zFn is not NULL, it is assigned the value of the first one of
** the "filename" or "fn" CGI parameters which is set.
**
** If zCi is not NULL, it is assigned the value of the first one of
** the "checkin" or "ci" CGI parameters which is set.
**
** If a parameter is not NULL, it will be assigned NULL if the
** corresponding parameter is not set.
**
** Returns the number of non-NULL values it assigns to arguments. Thus
** if passed (&x, NULL), it returns 1 if it assigns non-NULL to *x and
** 0 if it assigns NULL to *x.
*/
int ajax_get_fnci_args( const char **zFn, const char **zCi ){
  int rc = 0;
  if(zCi!=0){
    *zCi = PD("checkin",P("ci"));
    if( *zCi ) ++rc;
  }
  if(zFn!=0){
    *zFn = PD("filename",P("fn"));
    if (*zFn) ++rc;
  }
  return rc;
}

/*
** AJAX route /ajax/preview-text
**
** Required query parameters:
**
** filename=name of content, for use in determining the
** mimetype/render mode.
**
** content=text
**
** Optional query parameters:
**
** render_mode=integer (AJAX_RENDER_xxx) (default=AJAX_RENDER_GUESS)
**
** ln=0 or 1 to disable/enable line number mode in
** AJAX_RENDER_PLAIN_TEXT mode.
**
** iframe_height=integer (default=40) Height, in EMs of HTML preview
** iframe.
**
** User must have Write access to use this page.
**
** Responds with the HTML content of the preview. On error it produces
** a JSON response as documented for ajax_route_error().
**
** Extra response headers:
**
** x-ajax-render-mode: string representing the rendering mode
** which was really used (which will differ from the requested mode
** only if mode 0 (guess) was requested). The names are documented
** below in code and match those in the emitted JS object
** fossil.page.previewModes.
*/
void ajax_route_preview_text(void){
  const char * zFilename = 0;
  const char * zContent = P("content");
  int renderMode = atoi(PD("render_mode","0"));
  int ln = atoi(PD("ln","0"));
  int iframeHeight = atoi(PD("iframe_height","40"));
  Blob content = empty_blob;
  const char * zRenderMode = 0;

  ajax_get_fnci_args( &zFilename, 0 );

  if(!ajax_route_bootstrap(1,1)){
    return;
  }
  if(zFilename==0){
    /* The filename is only used for mimetype determination,
    ** so we can default it... */
    zFilename = "foo.txt";
  }
  cgi_set_content_type("text/html");
  blob_init(&content, zContent, -1);
  ajax_render_preview(&content, zFilename,
                      ln ? AJAX_PREVIEW_LINE_NUMBERS : 0,
                      &renderMode, iframeHeight);
  /*
  ** Now tell the caller if we did indeed use AJAX_RENDER_WIKI, so that
  ** they can re-set the <base href> to an appropriate value (which
  ** requires knowing the content's current check-in version, which we
  ** don't have here).
  */
  switch(renderMode){
    /* The strings used here MUST correspond to those used in the JS-side
    ** fossil.page.previewModes map.
    */
    case AJAX_RENDER_WIKI: zRenderMode = "wiki"; break;
    case AJAX_RENDER_HTML_INLINE: zRenderMode = "htmlInline"; break;
    case AJAX_RENDER_HTML_IFRAME: zRenderMode = "htmlIframe"; break;
    case AJAX_RENDER_PLAIN_TEXT: zRenderMode = "text"; break;
    case AJAX_RENDER_GUESS:
      assert(!"cannot happen");
  }
  if(zRenderMode!=0){
    cgi_printf_header("x-ajax-render-mode: %s\r\n", zRenderMode);
  }
}

#if INTERFACE
/*
** Internal mapping of ajax sub-route names to various metadata.
*/
struct AjaxRoute {
  const char *zName;   /* Name part of the route after "ajax/" */
  void (*xCallback)(); /* Impl function for the route. */
  int bWriteMode;      /* True if requires write mode */
  int bPost;           /* True if requires POST (i.e. CSRF
                       ** verification) */
};
typedef struct AjaxRoute AjaxRoute;
#endif /*INTERFACE*/

/*
** Comparison function for bsearch() for searching an AjaxRoute
** list for a matching name.
*/
int cmp_ajax_route_name(const void *a, const void *b){
  const AjaxRoute * rA = (const AjaxRoute*)a;
  const AjaxRoute * rB = (const AjaxRoute*)b;
  return fossil_strcmp(rA->zName, rB->zName);
}

/*
** WEBPAGE: ajax hidden
**
** The main dispatcher for shared ajax-served routes. Requires the
** 'name' parameter be the main route's name (as defined in a list in
** this function), noting that fossil automatically assigns all path
** parts after "ajax" to "name", e.g. /ajax/foo/bar assigns
** name=foo/bar.
**
** This "page" is only intended to be used by higher-level pages which
** have certain Ajax-driven features in common. It is not intended to
** be used by clients and NONE of its HTTP interfaces are considered
** documented/stable/supported - they may change on any given build of
** fossil.
**
** The exact response type depends on the route which gets called. In
** the case of an initialization error it emits a JSON-format response
** as documented for ajax_route_error(). Individual routes may emit
** errors in different formats, e.g. HTML.
*/
void ajax_route_dispatcher(void){
  const char * zName = P("name");
  AjaxRoute routeName = {0,0,0,0};
  const AjaxRoute * pRoute = 0;
  const AjaxRoute routes[] = {
  /* Keep these sorted by zName (for bsearch()) */
  {"preview-text", ajax_route_preview_text, 0, 1
   /* Note that this does not require write permissions in the repo.
   ** It should arguably require write permissions but doing means
   ** that /chat does not work without checkin permissions:
   **
   ** https://fossil-scm.org/forum/forumpost/ed4a762b3a557898
   **
   ** This particular route is used by /fileedit and /chat, whereas
   ** /wikiedit uses a simpler wiki-specific route.
   */ }
  };

  if(zName==0 || zName[0]==0){
    ajax_route_error(400,"Missing required [route] 'name' parameter.");
    return;
  }
  routeName.zName = zName;
  pRoute = (const AjaxRoute *)bsearch(&routeName, routes,
                                      count(routes), sizeof routes[0],
                                      cmp_ajax_route_name);
  if(pRoute==0){
    ajax_route_error(404,"Ajax route not found.");
    return;
  }else if(0==ajax_route_bootstrap(pRoute->bWriteMode, pRoute->bPost)){
    return;
  }
  pRoute->xCallback();
}
Added src/alerts.c.

























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Logic for email notification, also known as "alerts" or "subscriptions".
**
** Are you looking for the code that reads and writes the internet
** email protocol?  That is not here.  See the "smtp.c" file instead.
** Yes, the choice of source code filenames is not the greatest, but
** it is not so bad that changing them seems justified.
*/
#include "config.h"
#include "alerts.h"
#include <assert.h>
#include <time.h>

/*
** Maximum size of the subscriberCode blob, in bytes
*/
#define SUBSCRIBER_CODE_SZ 32

/*
** SQL code to implement the tables needed by the email notification
** system.
*/
static const char zAlertInit[] =
@ DROP TABLE IF EXISTS repository.subscriber;
@ -- Subscribers are distinct from users.  A person can have a log-in in
@ -- the USER table without being a subscriber.  Or a person can be a
@ -- subscriber without having a USER table entry.  Or they can have both.
@ -- In the last case the suname column points from the subscriber entry
@ -- to the USER entry.
@ --
@ -- The ssub field is a string where each character indicates a particular
@ -- type of event to subscribe to.  Choices:
@ --     a - Announcements
@ --     c - Check-ins
@ --     f - Forum posts
@ --     k - ** Special: Unsubscribed using /oneclickunsub
@ --     n - New forum threads
@ --     r - Replies to my own forum posts
@ --     t - Ticket changes
@ --     w - Wiki changes
@ --     x - Edits to forum posts
@ -- Probably different codes will be added in the future.  In the future
@ -- we might also add a separate table that allows subscribing to email
@ -- notifications for specific branches or tags or tickets.
@ --
@ CREATE TABLE repository.subscriber(
@   subscriberId INTEGER PRIMARY KEY, -- numeric subscriber ID.  Internal use
@   subscriberCode BLOB DEFAULT (randomblob(32)) UNIQUE, -- UUID for subscriber
@   semail TEXT UNIQUE COLLATE nocase,-- email address
@   suname TEXT,                      -- corresponding USER entry
@   sverified BOOLEAN DEFAULT true,   -- email address verified
@   sdonotcall BOOLEAN,               -- true for Do Not Call
@   sdigest BOOLEAN,                  -- true for daily digests only
@   ssub TEXT,                        -- baseline subscriptions
@   sctime INTDATE,                   -- When this entry was created. unixtime
@   mtime INTDATE,                    -- Last change.  unixtime
@   smip TEXT,                        -- IP address of last change
@   lastContact INT                   -- Last contact. days since 1970
@ );
@ CREATE INDEX repository.subscriberUname
@   ON subscriber(suname) WHERE suname IS NOT NULL;
@
@ DROP TABLE IF EXISTS repository.pending_alert;
@ -- Email notifications that need to be sent.
@ --
@ -- The first character of the eventid determines the event type.
@ -- Remaining characters determine the specific event.  For example,
@ -- 'c4413' means check-in with rid=4413.
@ --
@ CREATE TABLE repository.pending_alert(
@   eventid TEXT PRIMARY KEY,         -- Object that changed
@   sentSep BOOLEAN DEFAULT false,    -- individual alert sent
@   sentDigest BOOLEAN DEFAULT false, -- digest alert sent
@   sentMod BOOLEAN DEFAULT false     -- pending moderation alert sent
@ ) WITHOUT ROWID;
@
@ -- Obsolete table.  No longer used.
@ DROP TABLE IF EXISTS repository.alert_bounce;
;

/*
** Return true if the email notification tables exist.
*/
int alert_tables_exist(void){
  return db_table_exists("repository", "subscriber");
}

/*
** Record the fact that user zUser has made contact with the repository.
** This resets the subscription timeout on that user.
*/
void alert_user_contact(const char *zUser){
  if( db_table_has_column("repository","subscriber","lastContact") ){
    db_unprotect(PROTECT_READONLY);
    db_multi_exec(
      "UPDATE subscriber SET lastContact=now()/86400 WHERE suname=%Q",
      zUser
    );
    db_protect_pop();
  }
}

/*
** Make sure the table needed for email notification exist in the repository.
**
** If the bOnlyIfEnabled option is true, then tables are only created
** if the email-send-method is something other than "off".
*/
void alert_schema(int bOnlyIfEnabled){
  if( !alert_tables_exist() ){
    if( bOnlyIfEnabled
     && fossil_strcmp(db_get("email-send-method",0),"off")==0
    ){
      return;  /* Don't create table for disabled email */
    }
    db_exec_sql(zAlertInit);
    return;
  }
  if( db_table_has_column("repository","subscriber","lastContact") ){
    return;
  }
  db_unprotect(PROTECT_READONLY);
  db_multi_exec(
    "DROP TABLE IF EXISTS repository.alert_bounce;\n"
    "ALTER TABLE repository.subscriber ADD COLUMN lastContact INT;\n"
    "UPDATE subscriber SET lastContact=mtime/86400;"
  );
  db_protect_pop();
  if( db_table_has_column("repository","pending_alert","sentMod") ){
    return;
  }
  db_multi_exec(
    "ALTER TABLE repository.pending_alert"
    " ADD COLUMN sentMod BOOLEAN DEFAULT false;"
  );
}

/*
** Process deferred alert events.  Return the number of errors.
*/
static int alert_process_deferred_triggers(void){
  if( db_table_exists("temp","deferred_chat_events")
   && db_table_exists("repository","chat")
  ){
    const char *zChatUser = db_get("chat-timeline-user", 0);
    if( zChatUser && zChatUser[0] ){
      db_multi_exec(
        "INSERT INTO chat(mtime,lmtime,xfrom,xmsg)"
        " SELECT julianday(), "
               " strftime('%%Y-%%m-%%dT%%H:%%M:%%S','now','localtime'),"
               " %Q,"
               " chat_msg_from_event(type, objid, user, comment)\n"
        "   FROM deferred_chat_events;\n",
        zChatUser
      );
    }
  }
  return 0;
}

/*
** Enable triggers that automatically populate the pending_alert
** table. (Later:) Also add triggers that automatically relay timeline
** events to chat, if chat is configured for that.
*/
void alert_create_trigger(void){
  if( db_table_exists("repository","pending_alert") ){
    db_multi_exec(
      "DROP TRIGGER IF EXISTS repository.alert_trigger1;\n" /* Purge legacy */
      "CREATE TRIGGER temp.alert_trigger1\n"
      "AFTER INSERT ON repository.event BEGIN\n"
      "  INSERT INTO pending_alert(eventid)\n"
      "    SELECT printf('%%.1c%%d',new.type,new.objid) WHERE true\n"
      "    ON CONFLICT(eventId) DO NOTHING;\n"
      "END;"
    );
  }
  if( db_table_exists("repository","chat")
   && db_get("chat-timeline-user", "")[0]!=0
  ){
    /* Record events that will be relayed to chat, but do not relay
    ** them immediately, as the chat_msg_from_event() function requires
    ** that TAGXREF be up-to-date, and that has not happened yet when
    ** the insert into the EVENT table occurs.  Make arrangements to
    ** invoke alert_process_deferred_triggers() when the transaction
    ** commits.  The TAGXREF table will be ready by then. */
    db_multi_exec(
       "CREATE TABLE temp.deferred_chat_events(\n"
       "  type TEXT,\n"
       "  objid INT,\n"
       "  user TEXT,\n"
       "  comment TEXT\n"
       ");\n"
       "CREATE TRIGGER temp.chat_trigger1\n"
       "AFTER INSERT ON repository.event BEGIN\n"
       "  INSERT INTO deferred_chat_events"
       "   VALUES(new.type,new.objid,new.user,new.comment);\n"
       "END;\n"
    );
    db_commit_hook(alert_process_deferred_triggers, 1);
  }
}

/*
** Disable triggers the event_pending and chat triggers.
**
** This must be called before rebuilding the EVENT table, for example
** via the "fossil rebuild" command.
*/
void alert_drop_trigger(void){
  db_multi_exec(
    "DROP TRIGGER IF EXISTS temp.alert_trigger1;\n"
    "DROP TRIGGER IF EXISTS repository.alert_trigger1;\n" /* Purge legacy */
    "DROP TRIGGER IF EXISTS temp.chat_trigger1;\n"
  );
}

/*
** Return true if email alerts are active.
*/
int alert_enabled(void){
  if( !alert_tables_exist() ) return 0;
  if( fossil_strcmp(db_get("email-send-method",0),"off")==0 ) return 0;
  return 1;
}

/*
** If alerts are enabled, removes the pending_alert entry which
** matches (eventType || rid). Note that pending_alert entries are
** added via the manifest crosslinking process, so this has no effect
** if called before crosslinking is performed. Because alerts are sent
** asynchronously, unqueuing needs to be performed as part of the
** transaction in which crosslinking is performed in order to avoid a
** race condition.
*/
void alert_unqueue(char eventType, int rid){
  if( alert_enabled() ){
    db_multi_exec("DELETE FROM pending_alert WHERE eventid='%c%d'",
                  eventType, rid);
  }
}

/*
** If the subscriber table does not exist, then paint an error message
** web page and return true.
**
** If the subscriber table does exist, return 0 without doing anything.
*/
static int alert_webpages_disabled(void){
  if( alert_tables_exist() ) return 0;
  style_set_current_feature("alerts");
  style_header("Email Alerts Are Disabled");
  @ <p>Email alerts are disabled on this server</p>
  style_finish_page();
  return 1;
}

/*
** Insert a "Subscriber List" submenu link if the current user
** is an administrator.
*/
void alert_submenu_common(void){
  if( g.perm.Admin ){
    if( fossil_strcmp(g.zPath,"subscribers") ){
      style_submenu_element("Subscribers","%R/subscribers");
    }
    if( fossil_strcmp(g.zPath,"subscribe") ){
      style_submenu_element("Add New Subscriber","%R/subscribe");
    }
  }
}


/*
** WEBPAGE: setup_notification
**
** Administrative page for configuring and controlling email notification.
** Normally accessible via the /Admin/Notification menu.
*/
void setup_notification(void){
  static const char *const azSendMethods[] = {
    "off",   "Disabled",
    "pipe",  "Pipe to a command",
    "db",    "Store in a database",
    "dir",   "Store in a directory",
    "relay", "SMTP relay"
  };
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  db_begin_transaction();

  alert_submenu_common();
  style_submenu_element("Send Announcement","%R/announce");
  style_set_current_feature("alerts");
  style_header("Email Notification Setup");
  @ <h1>Status</h1>
  @ <table class="label-value">
  if( alert_enabled() ){
    stats_for_email();
  }else{
    @ <th>Disabled</th>
  }
  @ </table>
  @ <hr>
  @ <h1> Configuration </h1>
  @ <form action="%R/setup_notification" method="post"><div>
  @ <input type="submit"  name="submit" value="Apply Changes"><hr>
  login_insert_csrf_secret();

  entry_attribute("Canonical Server URL", 40, "email-url",
                   "eurl", "", 0);
  @ <p><b>Required.</b>
  @ This URL is used as the basename for hyperlinks included in
  @ email alert text.  Omit the trailing "/".
  @ Suggested value: "%h(g.zBaseURL)"
  @ (Property: "email-url")</p>
  @ <hr>

  entry_attribute("Administrator email address", 40, "email-admin",
                   "eadmin", "", 0);
  @ <p>This is the email for the human administrator for the system.
  @ Abuse and trouble reports and password reset requests are send here.
  @ (Property: "email-admin")</p>
  @ <hr>

  entry_attribute("\"Return-Path\" email address", 20, "email-self",
                   "eself", "", 0);
  @ <p><b>Required.</b>
  @ This is the email to which email notification bounces should be sent.
  @ In cases where the email notification does not align with a specific
  @ Fossil login account (for example, digest messages), this is also
  @ the "From:" address of the email notification.
  @ The system administrator should arrange for emails sent to this address
  @ to be handed off to the "fossil email incoming" command so that Fossil
  @ can handle bounces. (Property: "email-self")</p>
  @ <hr>

  entry_attribute("List-ID", 40, "email-listid",
                   "elistid", "", 0);
  @ <p>
  @ If this is not an empty string, then it becomes the argument to
  @ a "List-ID:" header on all out-bound notification emails.
  @ (Property: "email-listid")</p>
  @ <hr>

  entry_attribute("Repository Nickname", 16, "email-subname",
                   "enn", "", 0);
  @ <p><b>Required.</b>
  @ This is short name used to identifies the repository in the
  @ Subject: line of email alerts.  Traditionally this name is
  @ included in square brackets.  Examples: "[fossil-src]", "[sqlite-src]".
  @ (Property: "email-subname")</p>
  @ <hr>

  entry_attribute("Subscription Renewal Interval In Days", 8,
                  "email-renew-interval", "eri", "", 0);
  @ <p>
  @ If this value is an integer N greater than or equal to 14, then email
  @ notification subscriptions will be suspended N days after the last known
  @ interaction with the user.  This prevents sending notifications
  @ to abandoned accounts.  If a subscription comes within 7 days of expiring,
  @ a separate email goes out with the daily digest that prompts the
  @ subscriber to click on a link to the "/renew" webpage in order to
  @ extend their subscription.  Subscriptions never expire if this setting
  @ is less than 14 or is an empty string.
  @ (Property: "email-renew-interval")</p>
  @ <hr>

  multiple_choice_attribute("Email Send Method", "email-send-method", "esm",
       "off", count(azSendMethods)/2, azSendMethods);
  @ <p>How to send email.  Requires auxiliary information from the fields
  @ that follow.  Hint: Use the <a href="%R/announce">/announce</a> page
  @ to send test message to debug this setting.
  @ (Property: "email-send-method")</p>
  alert_schema(1);
  entry_attribute("Pipe Email Text Into This Command", 60, "email-send-command",
                   "ecmd", "sendmail -ti", 0);
  @ <p>When the send method is "pipe to a command", this is the command
  @ that is run.  Email messages are piped into the standard input of this
  @ command.  The command is expected to extract the sender address,
  @ recipient addresses, and subject from the header of the piped email
  @ text.  (Property: "email-send-command")</p>

  entry_attribute("Store Emails In This Database", 60, "email-send-db",
                   "esdb", "", 0);
  @ <p>When the send method is "store in a database", each email message is
  @ stored in an SQLite database file with the name given here.
  @ (Property: "email-send-db")</p>

  entry_attribute("Store Emails In This Directory", 60, "email-send-dir",
                   "esdir", "", 0);
  @ <p>When the send method is "store in a directory", each email message is
  @ stored as a separate file in the directory shown here.
  @ (Property: "email-send-dir")</p>

  entry_attribute("SMTP Relay Host", 60, "email-send-relayhost",
                   "esrh", "", 0);
  @ <p>When the send method is "SMTP relay", each email message is
  @ transmitted via the SMTP protocol (rfc5321) to a "Mail Submission
  @ Agent" or "MSA" (rfc4409) at the hostname shown here.  Optionally
  @ append a colon and TCP port number (ex: smtp.example.com:587).
  @ The default TCP port number is 25.
  @ (Property: "email-send-relayhost")</p>
  @ <hr>

  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </div></form>
  db_end_transaction(0);
  style_finish_page();
}

#if 0
/*
** Encode pMsg as MIME base64 and append it to pOut
*/
static void append_base64(Blob *pOut, Blob *pMsg){
  int n, i, k;
  char zBuf[100];
  n = blob_size(pMsg);
  for(i=0; i<n; i+=54){
    k = translateBase64(blob_buffer(pMsg)+i, i+54<n ? 54 : n-i, zBuf);
    blob_append(pOut, zBuf, k);
    blob_append(pOut, "\r\n", 2);
  }
}
#endif

/*
** Encode pMsg using the quoted-printable email encoding and
** append it onto pOut
*/
static void append_quoted(Blob *pOut, Blob *pMsg){
  char *zIn = blob_str(pMsg);
  char c;
  int iCol = 0;
  while( (c = *(zIn++))!=0 ){
    if( (c>='!' && c<='~' && c!='=' && c!=':')
     || (c==' ' && zIn[0]!='\r' && zIn[0]!='\n')
    ){
      blob_append_char(pOut, c);
      iCol++;
      if( iCol>=70 ){
        blob_append(pOut, "=\r\n", 3);
        iCol = 0;
      }
    }else if( c=='\r' && zIn[0]=='\n' ){
      zIn++;
      blob_append(pOut, "\r\n", 2);
      iCol = 0;
    }else if( c=='\n' ){
      blob_append(pOut, "\r\n", 2);
      iCol = 0;
    }else{
      char x[3];
      x[0] = '=';
      x[1] = "0123456789ABCDEF"[(c>>4)&0xf];
      x[2] = "0123456789ABCDEF"[c&0xf];
      blob_append(pOut, x, 3);
      iCol += 3;
    }
  }
}

#if INTERFACE
/*
** An instance of the following object is used to send emails.
*/
struct AlertSender {
  sqlite3 *db;               /* Database emails are sent to */
  sqlite3_stmt *pStmt;       /* Stmt to insert into the database */
  const char *zDest;         /* How to send email. */
  const char *zDb;           /* Name of database file */
  const char *zDir;          /* Directory in which to store as email files */
  const char *zCmd;          /* Command to run for each email */
  const char *zFrom;         /* Emails come from here */
  const char *zListId;       /* Argument to List-ID header */
  SmtpSession *pSmtp;        /* SMTP relay connection */
  Blob out;                  /* For zDest=="blob" */
  char *zErr;                /* Error message */
  u32 mFlags;                /* Flags */
  int bImmediateFail;        /* On any error, call fossil_fatal() */
};

/* Allowed values for mFlags to alert_sender_new().
*/
#define ALERT_IMMEDIATE_FAIL   0x0001   /* Call fossil_fatal() on any error */
#define ALERT_TRACE            0x0002   /* Log sending process on console */

#endif /* INTERFACE */

/*
** Shutdown an emailer.  Clear all information other than the error message.
*/
static void emailerShutdown(AlertSender *p){
  sqlite3_finalize(p->pStmt);
  p->pStmt = 0;
  sqlite3_close(p->db);
  p->db = 0;
  p->zDb = 0;
  p->zDir = 0;
  p->zCmd = 0;
  p->zListId = 0;
  if( p->pSmtp ){
    smtp_client_quit(p->pSmtp);
    smtp_session_free(p->pSmtp);
    p->pSmtp = 0;
  }
  blob_reset(&p->out);
}

/*
** Put the AlertSender into an error state.
*/
static void emailerError(AlertSender *p, const char *zFormat, ...){
  va_list ap;
  fossil_free(p->zErr);
  va_start(ap, zFormat);
  p->zErr = vmprintf(zFormat, ap);
  va_end(ap);
  emailerShutdown(p);
  if( p->mFlags & ALERT_IMMEDIATE_FAIL ){
    fossil_fatal("%s", p->zErr);
  }
}

/*
** Free an email sender object
*/
void alert_sender_free(AlertSender *p){
  if( p ){
    emailerShutdown(p);
    fossil_free(p->zErr);
    fossil_free(p);
  }
}

/*
** Get an email setting value.  Report an error if not configured.
** Return 0 on success and one if there is an error.
*/
static int emailerGetSetting(
  AlertSender *p,        /* Where to report the error */
  const char **pzVal,    /* Write the setting value here */
  const char *zName      /* Name of the setting */
){
  const char *z = db_get(zName, 0);
  int rc = 0;
  if( z==0 || z[0]==0 ){
    emailerError(p, "missing \"%s\" setting", zName);
    rc = 1;
  }else{
    *pzVal = z;
  }
  return rc;
}

/*
** Create a new AlertSender object.
**
** The method used for sending email is determined by various email-*
** settings, and especially email-send-method.  The repository
** email-send-method can be overridden by the zAltDest argument to
** cause a different sending mechanism to be used.  Pass "stdout" to
** zAltDest to cause all emails to be printed to the console for
** debugging purposes.
**
** The AlertSender object returned must be freed using alert_sender_free().
*/
AlertSender *alert_sender_new(const char *zAltDest, u32 mFlags){
  AlertSender *p;

  p = fossil_malloc(sizeof(*p));
  memset(p, 0, sizeof(*p));
  blob_init(&p->out, 0, 0);
  p->mFlags = mFlags;
  if( zAltDest ){
    p->zDest = zAltDest;
  }else{
    p->zDest = db_get("email-send-method",0);
  }
  if( fossil_strcmp(p->zDest,"off")==0 ) return p;
  if( emailerGetSetting(p, &p->zFrom, "email-self") ) return p;
  p->zListId = db_get("email-listid", 0);
  if( fossil_strcmp(p->zDest,"db")==0 ){
    char *zErr;
    int rc;
    if( emailerGetSetting(p, &p->zDb, "email-send-db") ) return p;
    rc = sqlite3_open(p->zDb, &p->db);
    if( rc ){
      emailerError(p, "unable to open output database file \"%s\": %s",
                   p->zDb, sqlite3_errmsg(p->db));
      return p;
    }
    rc = sqlite3_exec(p->db, "CREATE TABLE IF NOT EXISTS email(\n"
                          "  emailid INTEGER PRIMARY KEY,\n"
                          "  msg TEXT\n);", 0, 0, &zErr);
    if( zErr ){
      emailerError(p, "CREATE TABLE failed with \"%s\"", zErr);
      sqlite3_free(zErr);
      return p;
    }
    rc = sqlite3_prepare_v2(p->db, "INSERT INTO email(msg) VALUES(?1)", -1,
                            &p->pStmt, 0);
    if( rc ){
      emailerError(p, "cannot prepare INSERT statement: %s",
                 sqlite3_errmsg(p->db));
      return p;
    }
  }else if( fossil_strcmp(p->zDest, "pipe")==0 ){
    emailerGetSetting(p, &p->zCmd, "email-send-command");
  }else if( fossil_strcmp(p->zDest, "dir")==0 ){
    emailerGetSetting(p, &p->zDir, "email-send-dir");
  }else if( fossil_strcmp(p->zDest, "blob")==0 ){
    blob_init(&p->out, 0, 0);
  }else if( fossil_strcmp(p->zDest, "relay")==0 ){
    const char *zRelay = 0;
    emailerGetSetting(p, &zRelay, "email-send-relayhost");
    if( zRelay ){
      u32 smtpFlags = SMTP_DIRECT;
      if( mFlags & ALERT_TRACE ) smtpFlags |= SMTP_TRACE_STDOUT;
      p->pSmtp = smtp_session_new(domain_of_addr(p->zFrom), zRelay,
                                  smtpFlags);
      smtp_client_startup(p->pSmtp);
    }
  }
  return p;
}

/*
** Scan the header of the email message in pMsg looking for the
** (first) occurrance of zField.  Fill pValue with the content of
** that field.
**
** This routine initializes pValue.  Any prior content of pValue is
** discarded (leaked).
**
** Return non-zero on success.  Return 0 if no instance of the header
** is found.
*/
int email_header_value(Blob *pMsg, const char *zField, Blob *pValue){
  int nField = (int)strlen(zField);
  Blob line;
  blob_rewind(pMsg);
  blob_init(pValue,0,0);
  while( blob_line(pMsg, &line) ){
    int n, i;
    char *z;
    blob_trim(&line);
    n = blob_size(&line);
    if( n==0 ) return 0;
    if( n<nField+1 ) continue;
    z = blob_buffer(&line);
    if( sqlite3_strnicmp(z, zField, nField)==0 && z[nField]==':' ){
      for(i=nField+1; i<n && fossil_isspace(z[i]); i++){}
      blob_init(pValue, z+i, n-i);
      while( blob_line(pMsg, &line) ){
        blob_trim(&line);
        n = blob_size(&line);
        if( n==0 ) break;
        z = blob_buffer(&line);
        if( !fossil_isspace(z[0]) ) break;
        for(i=1; i<n && fossil_isspace(z[i]); i++){}
        blob_append(pValue, " ", 1);
        blob_append(pValue, z+i, n-i);
      }
      return 1;
    }
  }
  return 0;
}

/*
** Determine whether or not the input string is a valid email address.
** Only look at character up to but not including the first \000 or
** the first cTerm character, whichever comes first.
**
** Return the length of the email addresss string in bytes if the email
** address is valid.  If the email address is misformed, return 0.
*/
int email_address_is_valid(const char *z, char cTerm){
  int i;
  int nAt = 0;
  int nDot = 0;
  char c;
  if( z[0]=='.' ) return 0;  /* Local part cannot begin with "." */
  for(i=0; (c = z[i])!=0 && c!=cTerm; i++){
    if( fossil_isalnum(c) ){
      /* Alphanumerics are always ok */
    }else if( c=='@' ){
      if( nAt ) return 0;   /* Only a single "@"  allowed */
      if( i>64 ) return 0;  /* Local part too big */
      nAt = 1;
      nDot = 0;
      if( i==0 ) return 0;  /* Disallow empty local part */
      if( z[i-1]=='.' ) return 0; /* Last char of local cannot be "." */
      if( z[i+1]=='.' || z[i+1]=='-' ){
        return 0; /* Domain cannot begin with "." or "-" */
      }
    }else if( c=='-' ){
      if( z[i+1]==cTerm ) return 0;  /* Last character cannot be "-" */
    }else if( c=='.' ){
      if( z[i+1]=='.' ) return 0;  /* Do not allow ".." */
      if( z[i+1]==cTerm ) return 0;  /* Domain may not end with . */
      nDot++;
    }else if( (c=='_' || c=='+') && nAt==0 ){
      /* _ and + are ok in the local part */
    }else{
      return 0;   /* Anything else is an error */
    }
  }
  if( c!=cTerm ) return 0;    /* Missing terminator */
  if( nAt==0 ) return 0;      /* No "@" found anywhere */
  if( nDot==0 ) return 0;     /* No "." in the domain */
  return i;
}

/*
** Make a copy of the input string up to but not including the
** first cTerm character.
**
** Verify that the string to be copied really is a valid
** email address.  If it is not, then return NULL.
**
** This routine is more restrictive than necessary.  It does not
** allow comments, IP address, quoted strings, or certain uncommon
** characters.  The only non-alphanumerics allowed in the local
** part are "_", "+", "-" and "+".
*/
char *email_copy_addr(const char *z, char cTerm ){
  int i = email_address_is_valid(z, cTerm);
  return i==0 ? 0 : mprintf("%.*s", i, z);
}

/*
** Scan the input string for a valid email address that may be
** enclosed in <...>, or delimited by ',' or ':' or '=' or ' '.
** If the string contains one or more email addresses, extract the first
** one into memory obtained from mprintf() and return a pointer to it.
** If no valid email address can be found, return NULL.
*/
char *alert_find_emailaddr(const char *zIn){
  char *zOut = 0;
  do{
    zOut = email_copy_addr(zIn, zIn[strcspn(zIn, ">,:= ")]);
    if( zOut!=0 ) break;
    zIn = (const char *)strpbrk(zIn, "<,:= ");
    if( zIn==0 ) break;
    zIn++;
  }while( zIn!=0 );
  return zOut;
}

/*
** SQL function:  find_emailaddr(X)
**
** Return the first valid email address of the form <...> in input string
** X.  Or return NULL if not found.
*/
void alert_find_emailaddr_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zIn = (const char*)sqlite3_value_text(argv[0]);
  char *zOut = alert_find_emailaddr(zIn);
  if( zOut ){
    sqlite3_result_text(context, zOut, -1, fossil_free);
  }
}

/*
** SQL function:  display_name(X)
**
** If X is a string, search for a user name at the beginning of that
** string.  The user name must be followed by an email address.  If
** found, return the user name.  If not found, return NULL.
**
** This routine is used to extract the display name from the USER.INFO
** field.
*/
void alert_display_name_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zIn = (const char*)sqlite3_value_text(argv[0]);
  int i;
  if( zIn==0 ) return;
  while( fossil_isspace(zIn[0]) ) zIn++;
  for(i=0; zIn[i] && zIn[i]!='<' && zIn[i]!='\n'; i++){}
  if( zIn[i]=='<' ){
    while( i>0 && fossil_isspace(zIn[i-1]) ){ i--; }
    if( i>0 ){
      sqlite3_result_text(context, zIn, i, SQLITE_TRANSIENT);
    }
  }
}

/*
** Return the hostname portion of an email address - the part following
** the @
*/
char *alert_hostname(const char *zAddr){
  char *z = strchr(zAddr, '@');
  if( z ){
    z++;
  }else{
    z = (char*)zAddr;
  }
  return z;
}

/*
** Return a pointer to a fake email mailbox name that corresponds
** to human-readable name zFromName.  The fake mailbox name is based
** on a hash.  No huge problems arise if there is a hash collisions,
** but it is still better if collisions can be avoided.
**
** The returned string is held in a static buffer and is overwritten
** by each subsequent call to this routine.
*/
static char *alert_mailbox_name(const char *zFromName){
  static char zHash[20];
  unsigned int x = 0;
  int n = 0;
  while( zFromName[0] ){
    n++;
    x = x*1103515245 + 12345 + ((unsigned char*)zFromName)[0];
    zFromName++;
  }
  sqlite3_snprintf(sizeof(zHash), zHash,
      "noreply%x%08x", n, x);
  return zHash;
}

/*
** COMMAND: test-mailbox-hashname
**
** Usage: %fossil test-mailbox-hashname HUMAN-NAME ...
**
** Return the mailbox hash name corresponding to each human-readable
** name on the command line.  This is a test interface for the
** alert_mailbox_name() function.
*/
void alert_test_mailbox_hashname(void){
  int i;
  for(i=2; i<g.argc; i++){
    fossil_print("%30s: %s\n", g.argv[i], alert_mailbox_name(g.argv[i]));
  }
}

/*
** Extract all To: header values from the email header supplied.
** Store them in the array list.
*/
void email_header_to(Blob *pMsg, int *pnTo, char ***pazTo){
  int nTo = 0;
  char **azTo = 0;
  Blob v;
  char *z, *zAddr;
  int i;

  email_header_value(pMsg, "to", &v);
  z = blob_str(&v);
  for(i=0; z[i]; i++){
    if( z[i]=='<' && (zAddr = email_copy_addr(&z[i+1],'>'))!=0 ){
      azTo = fossil_realloc(azTo, sizeof(azTo[0])*(nTo+1) );
      azTo[nTo++] = zAddr;
    }
  }
  *pnTo = nTo;
  *pazTo = azTo;
}

/*
** Free a list of To addresses obtained from a prior call to
** email_header_to()
*/
void email_header_to_free(int nTo, char **azTo){
  int i;
  for(i=0; i<nTo; i++) fossil_free(azTo[i]);
  fossil_free(azTo);
}

/*
** Send a single email message.
**
** The recipient(s) must be specified using  "To:" or "Cc:" or "Bcc:" fields
** in the header.  Likewise, the header must contains a "Subject:" line.
** The header might also include fields like "Message-Id:" or
** "In-Reply-To:".
**
** This routine will add fields to the header as follows:
**
**     From:
**     Date:
**     Message-Id:
**     Content-Type:
**     Content-Transfer-Encoding:
**     MIME-Version:
**     Sender:
**
** The caller maintains ownership of the input Blobs.  This routine will
** read the Blobs and send them onward to the email system, but it will
** not free them.
**
** The Message-Id: field is added if there is not already a Message-Id
** in the pHdr parameter.
**
** If the zFromName argument is not NULL, then it should be a human-readable
** name or handle for the sender.  In that case, "From:" becomes a made-up
** email address based on a hash of zFromName and the domain of email-self,
** and an additional "Sender:" field is inserted with the email-self
** address.  Downstream software might use the Sender header to set
** the envelope-from address of the email.  If zFromName is a NULL pointer,
** then the "From:" is set to the email-self value and Sender is
** omitted.
*/
void alert_send(
  AlertSender *p,           /* Emailer context */
  Blob *pHdr,               /* Email header (incomplete) */
  Blob *pBody,              /* Email body */
  const char *zFromName     /* Optional human-readable name of sender */
){
  Blob all, *pOut;
  u64 r1, r2;
  if( p->mFlags & ALERT_TRACE ){
    fossil_print("Sending email\n");
  }
  if( fossil_strcmp(p->zDest, "off")==0 ){
    return;
  }
  blob_init(&all, 0, 0);
  if( fossil_strcmp(p->zDest, "blob")==0 ){
    pOut = &p->out;
    if( blob_size(pOut) ){
      blob_appendf(pOut, "%.72c\n", '=');
    }
  }else{
    pOut = &all;
  }
  blob_append(pOut, blob_buffer(pHdr), blob_size(pHdr));
  if( p->zFrom==0 || p->zFrom[0]==0 ){
    return;  /* email-self is not set.  Error will be reported separately */
  }else if( zFromName ){
    blob_appendf(pOut, "From: %s <%s@%s>\r\n",
       zFromName, alert_mailbox_name(zFromName), alert_hostname(p->zFrom));
    blob_appendf(pOut, "Sender: <%s>\r\n", p->zFrom);
  }else{
    blob_appendf(pOut, "From: <%s>\r\n", p->zFrom);
  }
  blob_appendf(pOut, "Date: %z\r\n", cgi_rfc822_datestamp(time(0)));
  if( p->zListId  && p->zListId[0] ){
    blob_appendf(pOut, "List-Id: %s\r\n", p->zListId);
  }
  if( strstr(blob_str(pHdr), "\r\nMessage-Id:")==0 ){
    /* Message-id format:  "<$(date)x$(random)@$(from-host)>" where $(date) is
    ** the current unix-time in hex, $(random) is a 64-bit random number,
    ** and $(from) is the domain part of the email-self setting. */
    sqlite3_randomness(sizeof(r1), &r1);
    r2 = time(0);
    blob_appendf(pOut, "Message-Id: <%llxx%016llx@%s>\r\n",
                 r2, r1, alert_hostname(p->zFrom));
  }
  blob_add_final_newline(pBody);
  blob_appendf(pOut, "MIME-Version: 1.0\r\n");
  blob_appendf(pOut, "Content-Type: text/plain; charset=\"UTF-8\"\r\n");
#if 0
  blob_appendf(pOut, "Content-Transfer-Encoding: base64\r\n\r\n");
  append_base64(pOut, pBody);
#else
  blob_appendf(pOut, "Content-Transfer-Encoding: quoted-printable\r\n\r\n");
  append_quoted(pOut, pBody);
#endif
  if( p->pStmt ){
    int i, rc;
    sqlite3_bind_text(p->pStmt, 1, blob_str(&all), -1, SQLITE_TRANSIENT);
    for(i=0; i<100 && sqlite3_step(p->pStmt)==SQLITE_BUSY; i++){
      sqlite3_sleep(10);
    }
    rc = sqlite3_reset(p->pStmt);
    if( rc!=SQLITE_OK ){
      emailerError(p, "Failed to insert email message into output queue.\n"
                      "%s", sqlite3_errmsg(p->db));
    }
  }else if( p->zCmd ){
    FILE *out = popen(p->zCmd, "w");
    if( out ){
      fwrite(blob_buffer(&all), 1, blob_size(&all), out);
      pclose(out);
    }else{
      emailerError(p, "Could not open output pipe \"%s\"", p->zCmd);
    }
  }else if( p->zDir ){
    char *zFile = file_time_tempname(p->zDir, ".email");
    blob_write_to_file(&all, zFile);
    fossil_free(zFile);
  }else if( p->pSmtp ){
    char **azTo = 0;
    int nTo = 0;
    email_header_to(pHdr, &nTo, &azTo);
    if( nTo>0 ){
      smtp_send_msg(p->pSmtp, p->zFrom, nTo, (const char**)azTo,blob_str(&all));
      email_header_to_free(nTo, azTo);
    }
  }else if( strcmp(p->zDest, "stdout")==0 ){
    char **azTo = 0;
    int nTo = 0;
    int i;
    email_header_to(pHdr, &nTo, &azTo);
    for(i=0; i<nTo; i++){
      fossil_print("X-To-Test-%d: [%s]\r\n", i, azTo[i]);
    }
    email_header_to_free(nTo, azTo);
    blob_add_final_newline(&all);
    fossil_print("%s", blob_str(&all));
  }
  blob_reset(&all);
}

/*
** SETTING: email-url                 width=40
** This is the main URL used to access the repository for cloning or
** syncing or for operating the web interface.  It is also
** the basename for hyperlinks included in email alert text.
** Omit the trailing "/".  If the repository is not intended to be
** a long-running server and will not be sending email notifications,
** then leave this setting blank.
*/
/*
** SETTING: email-admin               width=40
** This is the email address for the human administrator for the system.
** Abuse and trouble reports and password reset requests are send here.
*/
/*
** SETTING: email-subname             width=16
** This is a short name used to identifies the repository in the Subject:
** line of email alerts. Traditionally this name is included in square
** brackets. Examples: "[fossil-src]", "[sqlite-src]".
*/
/*
** SETTING: email-renew-interval      width=16
** If this setting as an integer N that is 14 or greater then email
** notification is suspended for subscriptions that have a "last contact
** time" of more than N days ago.  The "last contact time" is recorded
** in the SUBSCRIBER.LASTCONTACT entry of the database.  Logging in,
** sending a forum post, editing a wiki page, changing subscription settings
** at /alerts, or visiting /renew all update the last contact time.
** If this setting is not an integer value or is less than 14 or undefined,
** then subscriptions never expire.
*/
/* X-VARIABLE:  email-renew-warning
** X-VARIABLE:  email-renew-cutoff
**
** These CONFIG table entries are not considered "settings" since their
** values are computed and updated automatically.
**
** email-renew-cutoff is the lastContact cutoff for subscription.  It
** is measured in days since 1970-01-01.  If The lastContact time for
** a subscription is less than email-renew-cutoff, then now new emails
** are sent to the subscriber.
**
** email-renew-warning is the time (in days since 1970-01-01) when the
** last batch of "your subscription is about to expire" emails were
** sent out.
**
** email-renew-cutoff is normally 7 days behind email-renew-warning.
*/
/*
** SETTING: email-send-method         width=5 default=off sensitive
** Determine the method used to send email.  Allowed values are
** "off", "relay", "pipe", "dir", "db", and "stdout".  The "off" value
** means no email is ever sent.  The "relay" value means emails are sent
** to an Mail Sending Agent using SMTP located at email-send-relayhost.
** The "pipe" value means email messages are piped into a command
** determined by the email-send-command setting. The "dir" value means
** emails are written to individual files in a directory determined
** by the email-send-dir setting.  The "db" value means that emails
** are added to an SQLite database named by the* email-send-db setting.
** The "stdout" value writes email text to standard output, for debugging.
*/
/*
** SETTING: email-send-command       width=40 sensitive
** This is a command to which outbound email content is piped when the
** email-send-method is set to "pipe".  The command must extract
** recipient, sender, subject, and all other relevant information
** from the email header.
*/
/*
** SETTING: email-send-dir           width=40 sensitive
** This is a directory into which outbound emails are written as individual
** files if the email-send-method is set to "dir".
*/
/*
** SETTING: email-send-db            width=40 sensitive
** This is an SQLite database file into which outbound emails are written
** if the email-send-method is set to "db".
*/
/*
** SETTING: email-self               width=40
** This is the email address for the repository.  Outbound emails add
** this email address as the "From:" field.
*/
/*
** SETTING: email-listid             width=40
** If this setting is not an empty string, then it becomes the argument to
** a "List-ID:" header that is added to all out-bound notification emails.
*/
/*
** SETTING: email-send-relayhost      width=40 sensitive
** This is the hostname and TCP port to which output email messages
** are sent when email-send-method is "relay".  There should be an
** SMTP server configured as a Mail Submission Agent listening on the
** designated host and port and all times.
*/


/*
** COMMAND: alerts*
**
** Usage: %fossil alerts SUBCOMMAND ARGS...
**
** Subcommands:
**
**    pending                 Show all pending alerts.  Useful for debugging.
**
**    reset                   Hard reset of all email notification tables
**                            in the repository.  This erases all subscription
**                            information.  ** Use with extreme care **
**
**    send                    Compose and send pending email alerts.
**                            Some installations may want to do this via
**                            a cron-job to make sure alerts are sent
**                            in a timely manner.
**
**                            Options:
**                               --digest     Send digests
**                               --renewal    Send subscription renewal
**                                            notices
**                               --test       Write to standard output
**
**    settings [NAME VALUE]   With no arguments, list all email settings.
**                            Or change the value of a single email setting.
**
**    status                  Report on the status of the email alert
**                            subsystem
**
**    subscribers [PATTERN]   List all subscribers matching PATTERN.  Either
**                            LIKE or GLOB wildcards can be used in PATTERN.
**
**    test-message TO [OPTS]  Send a single email message using whatever
**                            email sending mechanism is currently configured.
**                            Use this for testing the email notification
**                            configuration.
**
**                            Options:
**                              --body FILENAME         Content from FILENAME
**                              --smtp-trace            Trace SMTP processing
**                              --stdout                Send msg to stdout
**                              -S|--subject SUBJECT    Message "subject:"
**
**    unsubscribe EMAIL       Remove a single subscriber with the given EMAIL.
*/
void alert_cmd(void){
  const char *zCmd;
  int nCmd;
  db_find_and_open_repository(0, 0);
  alert_schema(0);
  zCmd = g.argc>=3 ? g.argv[2] : "x";
  nCmd = (int)strlen(zCmd);
  if( strncmp(zCmd, "pending", nCmd)==0 ){
    Stmt q;
    verify_all_options();
    if( g.argc!=3 ) usage("pending");
    db_prepare(&q,"SELECT eventid, sentSep, sentDigest, sentMod"
                  "  FROM pending_alert");
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%10s %7s %10s %7s\n",
         db_column_text(&q,0),
         db_column_int(&q,1) ? "sentSep" : "",
         db_column_int(&q,2) ? "sentDigest" : "",
         db_column_int(&q,3) ? "sentMod" : "");
    }
    db_finalize(&q);
  }else
  if( strncmp(zCmd, "reset", nCmd)==0 ){
    int c;
    int bForce = find_option("force","f",0)!=0;
    verify_all_options();
    if( bForce ){
      c = 'y';
    }else{
      Blob yn;
      fossil_print(
          "This will erase all content in the repository tables, thus\n"
          "deleting all subscriber information.  The information will be\n"
          "unrecoverable.\n");
      prompt_user("Continue? (y/N) ", &yn);
      c = blob_str(&yn)[0];
      blob_reset(&yn);
    }
    if( c=='y' ){
      alert_drop_trigger();
      db_multi_exec(
        "DROP TABLE IF EXISTS subscriber;\n"
        "DROP TABLE IF EXISTS pending_alert;\n"
        "DROP TABLE IF EXISTS alert_bounce;\n"
        /* Legacy */
        "DROP TABLE IF EXISTS alert_pending;\n"
        "DROP TABLE IF EXISTS subscription;\n"
      );
      alert_schema(0);
    }
  }else
  if( strncmp(zCmd, "send", nCmd)==0 ){
    u32 eFlags = 0;
    if( find_option("digest",0,0)!=0 ) eFlags |= SENDALERT_DIGEST;
    if( find_option("renewal",0,0)!=0 ) eFlags |= SENDALERT_RENEWAL;
    if( find_option("test",0,0)!=0 ){
      eFlags |= SENDALERT_PRESERVE|SENDALERT_STDOUT;
    }
    verify_all_options();
    alert_send_alerts(eFlags);
  }else
  if( strncmp(zCmd, "settings", nCmd)==0 ){
    int isGlobal = find_option("global",0,0)!=0;
    int nSetting;
    const Setting *pSetting = setting_info(&nSetting);
    db_open_config(1, 0);
    verify_all_options();
    if( g.argc!=3 && g.argc!=5 ) usage("setting [NAME VALUE]");
    if( g.argc==5 ){
      const char *zLabel = g.argv[3];
      if( strncmp(zLabel, "email-", 6)!=0
       || (pSetting = db_find_setting(zLabel, 1))==0 ){
        fossil_fatal("not a valid email setting: \"%s\"", zLabel);
      }
      db_set(pSetting->name/*works-like:""*/, g.argv[4], isGlobal);
      g.argc = 3;
    }
    pSetting = setting_info(&nSetting);
    for(; nSetting>0; nSetting--, pSetting++ ){
      if( strncmp(pSetting->name,"email-",6)!=0 ) continue;
      print_setting(pSetting, 0);
    }
  }else
  if( strncmp(zCmd, "status", nCmd)==0 ){
    Stmt q;
    int iCutoff;
    int nSetting, n;
    static const char *zFmt = "%-29s %d\n";
    const Setting *pSetting = setting_info(&nSetting);
    db_open_config(1, 0);
    verify_all_options();
    if( g.argc!=3 ) usage("status");
    pSetting = setting_info(&nSetting);
    for(; nSetting>0; nSetting--, pSetting++ ){
      if( strncmp(pSetting->name,"email-",6)!=0 ) continue;
      print_setting(pSetting, 0);
    }
    n = db_int(0,"SELECT count(*) FROM pending_alert WHERE NOT sentSep");
    fossil_print(zFmt/*works-like:"%s%d"*/, "pending-alerts", n);
    n = db_int(0,"SELECT count(*) FROM pending_alert WHERE NOT sentDigest");
    fossil_print(zFmt/*works-like:"%s%d"*/, "pending-digest-alerts", n);
    db_prepare(&q,
       "SELECT"
       " name,"
       " value,"
       " now()/86400-value,"
       " date(value*86400,'unixepoch')"
       " FROM repository.config"
       " WHERE name in ('email-renew-warning','email-renew-cutoff');");
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%-29s %-6d (%d days ago on %s)\n",
         db_column_text(&q, 0),
         db_column_int(&q, 1),
         db_column_int(&q, 2),
         db_column_text(&q, 3));
    }
    db_finalize(&q);
    n = db_int(0,"SELECT count(*) FROM subscriber");
    fossil_print(zFmt/*works-like:"%s%d"*/, "total-subscribers", n);
    iCutoff = db_get_int("email-renew-cutoff", 0);
    n = db_int(0, "SELECT count(*) FROM subscriber WHERE sverified"
                  " AND NOT sdonotcall AND length(ssub)>1"
                  " AND lastContact>=%d", iCutoff);
    fossil_print(zFmt/*works-like:"%s%d"*/, "active-subscribers", n);
  }else
  if( strncmp(zCmd, "subscribers", nCmd)==0 ){
    Stmt q;
    verify_all_options();
    if( g.argc!=3 && g.argc!=4 ) usage("subscribers [PATTERN]");
    if( g.argc==4 ){
      char *zPattern = g.argv[3];
      db_prepare(&q,
        "SELECT semail FROM subscriber"
        " WHERE semail LIKE '%%%q%%' OR suname LIKE '%%%q%%'"
        "  OR semail GLOB '*%q*' or suname GLOB '*%q*'"
        " ORDER BY semail",
        zPattern, zPattern, zPattern, zPattern);
    }else{
      db_prepare(&q,
        "SELECT semail FROM subscriber"
        " ORDER BY semail");
    }
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%s\n", db_column_text(&q, 0));
    }
    db_finalize(&q);
  }else
  if( strncmp(zCmd, "test-message", nCmd)==0 ){
    Blob prompt, body, hdr;
    const char *zDest = find_option("stdout",0,0)!=0 ? "stdout" : 0;
    int i;
    u32 mFlags = ALERT_IMMEDIATE_FAIL;
    const char *zSubject = find_option("subject", "S", 1);
    const char *zSource = find_option("body", 0, 1);
    AlertSender *pSender;
    if( find_option("smtp-trace",0,0)!=0 ) mFlags |= ALERT_TRACE;
    verify_all_options();
    blob_init(&prompt, 0, 0);
    blob_init(&body, 0, 0);
    blob_init(&hdr, 0, 0);
    blob_appendf(&hdr,"To: ");
    for(i=3; i<g.argc; i++){
      if( i>3 ) blob_append(&hdr, ", ", 2);
      blob_appendf(&hdr, "<%s>", g.argv[i]);
    }
    blob_append(&hdr,"\r\n",2);
    if( zSubject==0 ) zSubject = "fossil alerts test-message";
    blob_appendf(&hdr, "Subject: %s\r\n", zSubject);
    if( zSource ){
      blob_read_from_file(&body, zSource, ExtFILE);
    }else{
      prompt_for_user_comment(&body, &prompt);
    }
    blob_add_final_newline(&body);
    pSender = alert_sender_new(zDest, mFlags);
    alert_send(pSender, &hdr, &body, 0);
    alert_sender_free(pSender);
    blob_reset(&hdr);
    blob_reset(&body);
    blob_reset(&prompt);
  }else
  if( strncmp(zCmd, "unsubscribe", nCmd)==0 ){
    verify_all_options();
    if( g.argc!=4 ) usage("unsubscribe EMAIL");
    db_multi_exec(
      "DELETE FROM subscriber WHERE semail=%Q", g.argv[3]);
  }else
  {
    usage("pending|reset|send|setting|status|"
          "subscribers|test-message|unsubscribe");
  }
}

/*
** Do error checking on a submitted subscription form.  Return TRUE
** if the submission is valid.  Return false if any problems are seen.
*/
static int subscribe_error_check(
  int *peErr,           /* Type of error */
  char **pzErr,         /* Error message text */
  int needCaptcha       /* True if captcha check needed */
){
  const char *zEAddr;
  int i, j, n;
  char c;

  *peErr = 0;
  *pzErr = 0;

  /* Verify the captcha first */
  if( needCaptcha ){
    if( !captcha_is_correct(1) ){
      *peErr = 2;
      *pzErr = mprintf("incorrect security code");
      return 0;
    }
  }

  /* Check the validity of the email address.
  **
  **  (1) Exactly one '@' character.
  **  (2) No other characters besides [a-zA-Z0-9._+-]
  **
  **  The local part is currently more restrictive than RFC 5322 allows:
  **  https://stackoverflow.com/a/2049510/142454  We will expand this as
  **  necessary.
  */
  zEAddr = P("e");
  if( zEAddr==0 ){
    *peErr = 1;
    *pzErr = mprintf("required");
    return 0;
  }
  for(i=j=n=0; (c = zEAddr[i])!=0; i++){
    if( c=='@' ){
      n = i;
      j++;
      continue;
    }
    if( !fossil_isalnum(c) && c!='.' && c!='_' && c!='-' && c!='+' ){
      *peErr = 1;
      *pzErr = mprintf("illegal character in email address: 0x%x '%c'",
                   c, c);
      return 0;
    }
  }
  if( j!=1 ){
    *peErr = 1;
    *pzErr = mprintf("email address should contain exactly one '@'");
    return 0;
  }
  if( n<1 ){
    *peErr = 1;
    *pzErr = mprintf("name missing before '@' in email address");
    return 0;
  }
  if( n>i-5 ){
    *peErr = 1;
    *pzErr = mprintf("email domain too short");
     return 0;
  }

  if( authorized_subscription_email(zEAddr)==0 ){
    *peErr = 1;
    *pzErr = mprintf("not an authorized email address");
    return 0;
  }

  /* Check to make sure the email address is available for reuse */
  if( db_exists("SELECT 1 FROM subscriber WHERE semail=%Q", zEAddr) ){
    *peErr = 1;
    *pzErr = mprintf("this email address is used by someone else");
    return 0;
  }

  /* If we reach this point, all is well */
  return 1;
}

/*
** Text of email message sent in order to confirm a subscription.
*/
static const char zConfirmMsg[] =
@ Someone has signed you up for email alerts on the Fossil repository
@ at %s.
@
@ To confirm your subscription and begin receiving alerts, click on
@ the following hyperlink:
@
@    %s/alerts/%s
@
@ Save the hyperlink above!  You can reuse this same hyperlink to
@ unsubscribe or to change the kinds of alerts you receive.
@
@ If you do not want to subscribe, you can simply ignore this message.
@ You will not be contacted again.
@
;

/*
** Append the text of an email confirmation message to the given
** Blob.  The security code is in zCode.
*/
void alert_append_confirmation_message(Blob *pMsg, const char *zCode){
  blob_appendf(pMsg, zConfirmMsg/*works-like:"%s%s%s"*/,
                   g.zBaseURL, g.zBaseURL, zCode);
}

/*
** WEBPAGE: subscribe
**
** Allow users to subscribe to email notifications.
**
** This page is usually run by users who are not logged in.
** A logged-in user can add email notifications on the /alerts page.
** Access to this page by a logged in user (other than an
** administrator) results in a redirect to the /alerts page.
**
** Administrators can visit this page in order to sign up other
** users.
**
** The Alerts permission ("7") is required to access this
** page.  To allow anonymous passers-by to sign up for email
** notification, set Email-Alerts on user "nobody" or "anonymous".
*/
void subscribe_page(void){
  int needCaptcha;
  unsigned int uSeed = 0;
  const char *zDecoded;
  char *zCaptcha = 0;
  char *zErr = 0;
  int eErr = 0;
  int di;

  if( alert_webpages_disabled() ) return;
  login_check_credentials();
  if( !g.perm.EmailAlert ){
    login_needed(g.anon.EmailAlert);
    return;
  }
  if( login_is_individual()
   && db_exists("SELECT 1 FROM subscriber WHERE suname=%Q",g.zLogin)
  ){
    /* This person is already signed up for email alerts.  Jump
    ** to the screen that lets them edit their alert preferences.
    ** Except, administrators can create subscriptions for others so
    ** do not jump for them.
    */
    if( g.perm.Admin ){
      /* Admins get a link to admin their own account, but they
      ** stay on this page so that they can create subscriptions
      ** for other people. */
      style_submenu_element("My Subscription","%R/alerts");
    }else{
      /* Everybody else jumps to the page to administer their own
      ** account only. */
      cgi_redirectf("%R/alerts");
      return;
    }
  }
  if( !g.perm.Admin && !db_get_boolean("anon-subscribe",1) ){
    register_page();
    return;
  }
  style_set_current_feature("alerts");
  alert_submenu_common();
  needCaptcha = !login_is_individual();
  if( P("submit")
   && cgi_csrf_safe(2)
   && subscribe_error_check(&eErr,&zErr,needCaptcha)
  ){
    /* A validated request for a new subscription has been received. */
    char ssub[20];
    const char *zEAddr = P("e");
    const char *zCode;  /* New subscriber code (in hex) */
    int nsub = 0;
    const char *suname = PT("suname");
    if( suname==0 && needCaptcha==0 && !g.perm.Admin ) suname = g.zLogin;
    if( suname && suname[0]==0 ) suname = 0;
    if( PB("sa") ) ssub[nsub++] = 'a';
    if( g.perm.Read && PB("sc") )    ssub[nsub++] = 'c';
    if( g.perm.RdForum && PB("sf") ) ssub[nsub++] = 'f';
    if( g.perm.RdForum && PB("sn") ) ssub[nsub++] = 'n';
    if( g.perm.RdForum && PB("sr") ) ssub[nsub++] = 'r';
    if( g.perm.RdTkt && PB("st") )   ssub[nsub++] = 't';
    if( g.perm.RdWiki && PB("sw") )  ssub[nsub++] = 'w';
    if( g.perm.RdForum && PB("sx") ) ssub[nsub++] = 'x';
    ssub[nsub] = 0;
    zCode = db_text(0,
      "INSERT INTO subscriber(semail,suname,"
      "  sverified,sdonotcall,sdigest,ssub,sctime,mtime,smip,lastContact)"
      "VALUES(%Q,%Q,%d,0,%d,%Q,now(),now(),%Q,now()/86400)"
      "RETURNING hex(subscriberCode);",
      /* semail */    zEAddr,
      /* suname */    suname,
      /* sverified */ needCaptcha==0,
      /* sdigest */   PB("di"),
      /* ssub */      ssub,
      /* smip */      g.zIpAddr
    );
    if( !needCaptcha ){
      /* The new subscription has been added on behalf of a logged-in user.
      ** No verification is required.  Jump immediately to /alerts page.
      */
      if( g.perm.Admin ){
        cgi_redirectf("%R/alerts/%.32s", zCode);
      }else{
        cgi_redirectf("%R/alerts");
      }
      return;
    }else{
      /* We need to send a verification email */
      Blob hdr, body;
      AlertSender *pSender = alert_sender_new(0,0);
      blob_init(&hdr,0,0);
      blob_init(&body,0,0);
      blob_appendf(&hdr, "To: <%s>\n", zEAddr);
      blob_appendf(&hdr, "Subject: Subscription verification\n");
      alert_append_confirmation_message(&body, zCode);
      alert_send(pSender, &hdr, &body, 0);
      style_header("Email Alert Verification");
      if( pSender->zErr ){
        @ <h1>Internal Error</h1>
        @ <p>The following internal error was encountered while trying
        @ to send the confirmation email:
        @ <blockquote><pre>
        @ %h(pSender->zErr)
        @ </pre></blockquote>
      }else{
        @ <p>An email has been sent to "%h(zEAddr)". That email contains a
        @ hyperlink that you must click to activate your
        @ subscription.</p>
      }
      alert_sender_free(pSender);
      style_finish_page();
    }
    return;
  }
  style_header("Signup For Email Alerts");
  if( P("submit")==0 ){
    /* If this is the first visit to this page (if this HTTP request did not
    ** come from a prior Submit of the form) then default all of the
    ** subscription options to "on" */
    cgi_set_parameter_nocopy("sa","1",1);
    if( g.perm.Read )    cgi_set_parameter_nocopy("sc","1",1);
    if( g.perm.RdForum ) cgi_set_parameter_nocopy("sf","1",1);
    if( g.perm.RdForum ) cgi_set_parameter_nocopy("sn","1",1);
    if( g.perm.RdForum ) cgi_set_parameter_nocopy("sr","1",1);
    if( g.perm.RdTkt )   cgi_set_parameter_nocopy("st","1",1);
    if( g.perm.RdWiki )  cgi_set_parameter_nocopy("sw","1",1);
  }
  @ <p>To receive email notifications for changes to this
  @ repository, fill out the form below and press the "Submit" button.</p>
  form_begin(0, "%R/subscribe");
  @ <table class="subscribe">
  @ <tr>
  @  <td class="form_label">Email&nbsp;Address:</td>
  @  <td><input type="text" name="e" value="%h(PD("e",""))" size="30"></td>
  @ <tr>
  if( eErr==1 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ </tr>
  if( needCaptcha ){
    const char *zInit = "";
    if( P("captchaseed")!=0 && eErr!=2 ){
      uSeed = strtoul(P("captchaseed"),0,10);
      zInit = P("captcha");
    }else{
      uSeed = captcha_seed();
    }
    zDecoded = captcha_decode(uSeed, 0);
    zCaptcha = captcha_render(zDecoded);
    @ <tr>
    @  <td class="form_label">Security Code:</td>
    @  <td><input type="text" name="captcha" value="%h(zInit)" size="30">
    captcha_speakit_button(uSeed, "Speak the code");
    @  <input type="hidden" name="captchaseed" value="%u(uSeed)"></td>
    @ </tr>
    if( eErr==2 ){
      @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
    }
    @ </tr>
  }
  if( g.perm.Admin ){
    @ <tr>
    @  <td class="form_label">User:</td>
    @  <td><input type="text" name="suname" value="%h(PD("suname",g.zLogin))" \
    @  size="30"></td>
    @ </tr>
    if( eErr==3 ){
      @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
    }
    @ </tr>
  }
  @ <tr>
  @  <td class="form_label">Topics:</td>
  @  <td><label><input type="checkbox" name="sa" %s(PCK("sa"))> \
  @  Announcements</label><br>
  if( g.perm.Read ){
    @  <label><input type="checkbox" name="sc" %s(PCK("sc"))> \
    @  Check-ins</label><br>
  }
  if( g.perm.RdForum ){
    @  <label><input type="checkbox" name="sf" %s(PCK("sf"))> \
    @  All Forum Posts</label><br>
    @  <label><input type="checkbox" name="sn" %s(PCK("sn"))> \
    @  New Forum Threads</label><br>
    @  <label><input type="checkbox" name="sr" %s(PCK("sr"))> \
    @  Replies To My Forum Posts</label><br>
    @  <label><input type="checkbox" name="sx" %s(PCK("sx"))> \
    @  Edits To Forum Posts</label><br>
  }
  if( g.perm.RdTkt ){
    @  <label><input type="checkbox" name="st" %s(PCK("st"))> \
    @  Ticket changes</label><br>
  }
  if( g.perm.RdWiki ){
    @  <label><input type="checkbox" name="sw" %s(PCK("sw"))> \
    @  Wiki</label><br>
  }
  di = PB("di");
  @ </td></tr>
  @ <tr>
  @  <td class="form_label">Delivery:</td>
  @  <td><select size="1" name="di">
  @     <option value="0" %s(di?"":"selected")>Individual Emails</option>
  @     <option value="1" %s(di?"selected":"")>Daily Digest</option>
  @     </select></td>
  @ </tr>
  if( g.perm.Admin ){
    @ <tr>
    @  <td class="form_label">Admin Options:</td><td>
    @  <label><input type="checkbox" name="vi" %s(PCK("vi"))> \
    @  Verified</label><br>
    @  <label><input type="checkbox" name="dnc" %s(PCK("dnc"))> \
    @  Do not call</label></td></tr>
  }
  @ <tr>
  @  <td></td>
  if( needCaptcha && !alert_enabled() ){
    @  <td><input type="submit" name="submit" value="Submit" disabled>
    @  (Email current disabled)</td>
  }else{
    @  <td><input type="submit" name="submit" value="Submit"></td>
  }
  @ </tr>
  @ </table>
  if( needCaptcha ){
    @ <div class="captcha"><table class="captcha"><tr><td><pre class="captcha">
    @ %h(zCaptcha)
    @ </pre>
    @ Enter the 8 characters above in the "Security Code" box<br/>
    @ </td></tr></table></div>
  }
  @ </form>
  fossil_free(zErr);
  style_finish_page();
}

/*
** Either shutdown or completely delete a subscription entry given
** by the hex value zName.  Then paint a webpage that explains that
** the entry has been removed.
*/
static void alert_unsubscribe(int sid, int bTotal){
  const char *zEmail = 0;
  const char *zLogin = 0;
  int uid = 0;
  Stmt q;
  db_prepare(&q, "SELECT semail, suname FROM subscriber"
                 " WHERE subscriberId=%d", sid);
  if( db_step(&q)==SQLITE_ROW ){
    zEmail = db_column_text(&q, 0);
    zLogin = db_column_text(&q, 1);
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zLogin);
  }
  style_set_current_feature("alerts");
  if( zEmail==0 ){
    style_header("Unsubscribe Fail");
    @ <p>Unable to locate a subscriber with the requested key</p>
  }else{
    db_unprotect(PROTECT_READONLY);
    if( bTotal ){
      /* Completely delete the subscriber */
      db_multi_exec(
        "DELETE FROM subscriber WHERE subscriberId=%d", sid
      );
    }else{
      /* Keep the subscriber, but turn off all notifications */
      db_multi_exec(
        "UPDATE subscriber SET ssub='k', mtime=now() WHERE subscriberId=%d",
        sid
      );
    }
    db_protect_pop();
    style_header("Unsubscribed");
    @ <p>The "%h(zEmail)" email address has been unsubscribed from all
    @ notifications.  All subscription records for "%h(zEmail)" have
    @ been purged.  No further emails will be sent to "%h(zEmail)".</p>
    if( uid && g.perm.Admin ){
       @ <p>You may also want to
       @ <a href="%R/setup_uedit?id=%d(uid)">edit or delete
       @ the corresponding user "%h(zLogin)"</a></p>
    }
  }
  db_finalize(&q);
  style_finish_page();
  return;
}

/*
** WEBPAGE: alerts
**
** Edit email alert and notification settings.
**
** The subscriber is identified in several ways:
**
**    *    The name= query parameter contains the complete subscriberCode.
**         This only happens when the user receives a verification
**         email and clicks on the link in the email.  When a
**         compilete subscriberCode is seen on the name= query parameter,
**         that constitutes verification of the email address.
**
**    *    The sid= query parameter contains an integer subscriberId.
**         This only works for the administrator.  It allows the
**         administrator to edit any subscription.
**
**    *    The user is logged into an account other than "nobody" or
**         "anonymous".  In that case the notification settings
**         associated with that account can be edited without needing
**         to know the subscriber code.
**
**    *    The name= query parameter contains a 32-digit prefix of
**         subscriber code.  (Subscriber codes are normally 64 hex digits
**         in length.) This uniquely identifies the subscriber without
**         revealing the complete subscriber code, and hence without
**         verifying the email address.
*/
void alert_page(void){
  const char *zName = 0;        /* Value of the name= query parameter */
  Stmt q;                       /* For querying the database */
  int sa, sc, sf, st, sw, sx;   /* Types of notifications requested */
  int sn, sr;
  int sdigest = 0, sdonotcall = 0, sverified = 0;  /* Other fields */
  int isLogin;                  /* True if logged in as an individual */
  const char *ssub = 0;         /* Subscription flags */
  const char *semail = 0;       /* Email address */
  const char *smip;             /* */
  const char *suname = 0;       /* Corresponding user.login value */
  const char *mtime;            /* */
  const char *sctime;           /* Time subscription created */
  int eErr = 0;                 /* Type of error */
  char *zErr = 0;               /* Error message text */
  int sid = 0;                  /* Subscriber ID */
  int nName;                    /* Length of zName in bytes */
  char *zHalfCode;              /* prefix of subscriberCode */
  int keepAlive = 0;            /* True to update the last contact time */

  db_begin_transaction();
  if( alert_webpages_disabled() ){
    db_commit_transaction();
    return;
  }
  login_check_credentials();
  isLogin = login_is_individual();
  zName = P("name");
  nName = zName ? (int)strlen(zName) : 0;
  if( g.perm.Admin && P("sid")!=0 ){
    sid = atoi(P("sid"));
  }
  if( sid==0 && nName>=32 ){
    sid = db_int(0,
       "SELECT CASE WHEN hex(subscriberCode) LIKE (%Q||'%%')"
       "            THEN subscriberId ELSE 0 END"
       "  FROM subscriber WHERE subscriberCode>=hextoblob(%Q)"
       " LIMIT 1", zName, zName);
    if( sid ) keepAlive = 1;
  }
  if( sid==0 && isLogin && g.perm.EmailAlert ){
    sid = db_int(0, "SELECT subscriberId FROM subscriber"
                    " WHERE suname=%Q", g.zLogin);
  }
  if( sid==0 ){
    db_commit_transaction();
    cgi_redirect("subscribe");
    /*NOTREACHED*/
  }
  alert_submenu_common();
  if( P("submit")!=0 && cgi_csrf_safe(2) ){
    char newSsub[10];
    int nsub = 0;
    Blob update;

    sdonotcall = PB("sdonotcall");
    sdigest = PB("sdigest");
    semail = P("semail");
    if( PB("sa") )                   newSsub[nsub++] = 'a';
    if( g.perm.Read && PB("sc") )    newSsub[nsub++] = 'c';
    if( g.perm.RdForum && PB("sf") ) newSsub[nsub++] = 'f';
    if( g.perm.RdForum && PB("sn") ) newSsub[nsub++] = 'n';
    if( g.perm.RdForum && PB("sr") ) newSsub[nsub++] = 'r';
    if( g.perm.RdTkt && PB("st") )   newSsub[nsub++] = 't';
    if( g.perm.RdWiki && PB("sw") )  newSsub[nsub++] = 'w';
    if( g.perm.RdForum && PB("sx") ) newSsub[nsub++] = 'x';
    newSsub[nsub] = 0;
    ssub = newSsub;
    blob_init(&update, "UPDATE subscriber SET", -1);
    blob_append_sql(&update,
        " sdonotcall=%d,"
        " sdigest=%d,"
        " ssub=%Q,"
        " mtime=now(),"
        " lastContact=now()/86400,"
        " smip=%Q",
        sdonotcall,
        sdigest,
        ssub,
        g.zIpAddr
    );
    if( g.perm.Admin ){
      suname = PT("suname");
      sverified = PB("sverified");
      if( suname && suname[0]==0 ) suname = 0;
      blob_append_sql(&update,
        ", suname=%Q,"
        " sverified=%d",
        suname,
        sverified
      );
    }
    if( isLogin ){
      if( semail==0 || email_address_is_valid(semail,0)==0 ){
        eErr = 8;
      }
      blob_append_sql(&update, ", semail=%Q", semail);
    }
    blob_append_sql(&update," WHERE subscriberId=%d", sid);
    if( eErr==0 ){
      db_exec_sql(blob_str(&update));
      ssub = 0;
    }
    blob_reset(&update);
  }else if( keepAlive ){
    db_unprotect(PROTECT_READONLY);
    db_multi_exec(
      "UPDATE subscriber SET lastContact=now()/86400"
      " WHERE subscriberId=%d", sid
    );
    db_protect_pop();
  }
  if( P("delete")!=0 && cgi_csrf_safe(2) ){
    if( !PB("dodelete") ){
      eErr = 9;
      zErr = mprintf("Select this checkbox and press \"Unsubscribe\" again to"
                     " unsubscribe");
    }else{
      alert_unsubscribe(sid, 1);
      db_commit_transaction();
      return;
    }
  }
  style_set_current_feature("alerts");
  style_header("Update Subscription");
  db_prepare(&q,
    "SELECT"
    "  semail,"                       /* 0 */
    "  sverified,"                    /* 1 */
    "  sdonotcall,"                   /* 2 */
    "  sdigest,"                      /* 3 */
    "  ssub,"                         /* 4 */
    "  smip,"                         /* 5 */
    "  suname,"                       /* 6 */
    "  datetime(mtime,'unixepoch'),"  /* 7 */
    "  datetime(sctime,'unixepoch')," /* 8 */
    "  hex(subscriberCode),"          /* 9 */
    "  date(coalesce(lastContact*86400,mtime),'unixepoch'),"  /* 10 */
    "  now()/86400 - coalesce(lastContact,mtime/86400)"       /* 11 */
    " FROM subscriber WHERE subscriberId=%d", sid);
  if( db_step(&q)!=SQLITE_ROW ){
    db_finalize(&q);
    db_commit_transaction();
    cgi_redirect("subscribe");
    /*NOTREACHED*/
  }
  if( ssub==0 ){
    semail = db_column_text(&q, 0);
    sdonotcall = db_column_int(&q, 2);
    sdigest = db_column_int(&q, 3);
    ssub = db_column_text(&q, 4);
  }
  if( suname==0 ){
    suname = db_column_text(&q, 6);
    sverified = db_column_int(&q, 1);
  }
  sa = strchr(ssub,'a')!=0;
  sc = strchr(ssub,'c')!=0;
  sf = strchr(ssub,'f')!=0;
  sn = strchr(ssub,'n')!=0;
  sr = strchr(ssub,'r')!=0;
  st = strchr(ssub,'t')!=0;
  sw = strchr(ssub,'w')!=0;
  sx = strchr(ssub,'x')!=0;
  smip = db_column_text(&q, 5);
  mtime = db_column_text(&q, 7);
  sctime = db_column_text(&q, 8);
  if( !g.perm.Admin && !sverified ){
    if( nName==64 ){
      db_unprotect(PROTECT_READONLY);
      db_multi_exec(
        "UPDATE subscriber SET sverified=1"
        " WHERE subscriberCode=hextoblob(%Q)",
        zName);
      db_protect_pop();
      if( db_get_boolean("selfreg-verify",0) ){
        char *zNewCap = db_get("default-perms","u");
        db_unprotect(PROTECT_USER);
        db_multi_exec(
           "UPDATE user"
           "   SET cap=%Q"
           " WHERE cap='7' AND login=("
           "   SELECT suname FROM subscriber"
           "    WHERE subscriberCode=hextoblob(%Q))",
           zNewCap, zName
        );
        db_protect_pop();
        login_set_capabilities(zNewCap, 0);
      }
      @ <h1>Your email alert subscription has been verified!</h1>
      @ <p>Use the form below to update your subscription information.</p>
      @ <p>Hint:  Bookmark this page so that you can more easily update
      @ your subscription information in the future</p>
    }else{
      @ <h2>Your email address is unverified</h2>
      @ <p>You should have received an email message containing a link
      @ that you must visit to verify your account.  No email notifications
      @ will be sent until your email address has been verified.</p>
    }
  }else{
    @ <p>Make changes to the email subscription shown below and
    @ press "Submit".</p>
  }
  form_begin(0, "%R/alerts");
  zHalfCode = db_text("x","SELECT hex(substr(subscriberCode,1,16))"
                          "  FROM subscriber WHERE subscriberId=%d", sid);
  @ <input type="hidden" name="name" value="%h(zHalfCode)">
  @ <table class="subscribe">
  @ <tr>
  @  <td class="form_label">Email&nbsp;Address:</td>
  if( isLogin ){
    @  <td><input type="text" name="semail" value="%h(semail)" size="30">\
    if( eErr==8 ){
      @ <span class='loginError'>&larr; not a valid email address!</span>
    }else if( g.perm.Admin ){
      @ &nbsp;&nbsp;<a href="%R/announce?to=%t(semail)">\
      @ (Send a message to %h(semail))</a>\
    }
    @ </td>
  }else{
    @  <td>%h(semail)</td>
  }
  @ </tr>
  if( g.perm.Admin ){
    int uid;
    @ <tr>
    @  <td class='form_label'>Created:</td>
    @  <td>%h(sctime)</td>
    @ </tr>
    @ <tr>
    @  <td class='form_label'>Last Modified:</td>
    @  <td>%h(mtime)</td>
    @ </tr>
    @ <tr>
    @  <td class='form_label'>IP Address:</td>
    @  <td>%h(smip)</td>
    @ </tr>
    @ <tr>
    @  <td class='form_label'>Subscriber&nbsp;Code:</td>
    @  <td>%h(db_column_text(&q,9))</td>
    @ <tr>
    @ <tr>
    @  <td class='form_label'>Last Contact:</td>
    @  <td>%h(db_column_text(&q,10)) &larr; \
    @      %,d(db_column_int(&q,11)) days ago</td>
    @ </tr>
    @  <td class="form_label">User:</td>
    @  <td><input type="text" name="suname" value="%h(suname?suname:"")" \
    @  size="30">\
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", suname);
    if( uid ){
      @ &nbsp;&nbsp;<a href='%R/setup_uedit?id=%d(uid)'>\
      @ (login info for %h(suname))</a>\
    }
    @ </tr>
  }
  @ <tr>
  @  <td class="form_label">Topics:</td>
  @  <td><label><input type="checkbox" name="sa" %s(sa?"checked":"")>\
  @  Announcements</label><br>
  if( g.perm.Read ){
    @  <label><input type="checkbox" name="sc" %s(sc?"checked":"")>\
    @  Check-ins</label><br>
  }
  if( g.perm.RdForum ){
    @  <label><input type="checkbox" name="sf" %s(sf?"checked":"")>\
    @  All Forum Posts</label><br>
    @  <label><input type="checkbox" name="sn" %s(sn?"checked":"")>\
    @  New Forum Threads</label><br>
    @  <label><input type="checkbox" name="sr" %s(sr?"checked":"")>\
    @  Replies To My Posts</label><br>
    @  <label><input type="checkbox" name="sx" %s(sx?"checked":"")>\
    @  Edits To Forum Posts</label><br>
  }
  if( g.perm.RdTkt ){
    @  <label><input type="checkbox" name="st" %s(st?"checked":"")>\
    @  Ticket changes</label><br>
  }
  if( g.perm.RdWiki ){
    @  <label><input type="checkbox" name="sw" %s(sw?"checked":"")>\
    @  Wiki</label>
  }
  @ </td></tr>
  if( strchr(ssub,'k')!=0 ){
    @ <tr><td></td><td>&nbsp;&uarr;&nbsp;
    @ Note: User did a one-click unsubscribe</td></tr>
  }
  @ <tr>
  @  <td class="form_label">Delivery:</td>
  @  <td><select size="1" name="sdigest">
  @     <option value="0" %s(sdigest?"":"selected")>Individual Emails</option>
  @     <option value="1" %s(sdigest?"selected":"")>Daily Digest</option>
  @     </select></td>
  @ </tr>
  if( g.perm.Admin ){
    @ <tr>
    @  <td class="form_label">Admin Options:</td><td>
    @  <label><input type="checkbox" name="sdonotcall" \
    @  %s(sdonotcall?"checked":"")> Do not disturb</label><br>
    @  <label><input type="checkbox" name="sverified" \
    @  %s(sverified?"checked":"")>\
    @  Verified</label></td></tr>
  }
  if( eErr==9 ){
    @ <tr>
    @  <td class="form_label">Verify:</td><td>
    @  <label><input type="checkbox" name="dodelete">
    @  Unsubscribe</label>
    @ <span class="loginError">&larr; %h(zErr)</span>
    @ </td></tr>
  }
  @ <tr>
  @  <td></td>
  @  <td><input type="submit" name="submit" value="Submit">
  @  <input type="submit" name="delete" value="Unsubscribe">
  @ </tr>
  @ </table>
  @ </form>
  fossil_free(zErr);
  db_finalize(&q);
  style_finish_page();
  db_commit_transaction();
  return;
}

/*
** WEBPAGE: renew
**
** Users visit this page to update the last-contact date on their
** subscription.  The last-contact date is the day that the subscriber
** last interacted with the repository.  If the name= query parameter
** (or POST parameter) contains a valid subscriber code, then the last-contact
** subscription associated with that subscriber code is updated to be the
** current date.
*/
void renewal_page(void){
  const char *zName = P("name");
  int iInterval = db_get_int("email-renew-interval", 0);
  Stmt s;
  int rc;

  style_header("Subscription Renewal");
  if( zName==0 || strlen(zName)<4 ){
    @ <p>No subscription specified</p>
    style_finish_page();
    return;
  }

  if( !db_table_has_column("repository","subscriber","lastContact")
   || iInterval<1
  ){
    @ <p>This repository does not expire email notification subscriptions.
    @ No renewals are necessary.</p>
    style_finish_page();
    return;
  }

  db_unprotect(PROTECT_READONLY);
  db_prepare(&s,
    "UPDATE subscriber"
    "   SET lastContact=now()/86400"
    " WHERE subscriberCode=hextoblob(%Q)"
    " RETURNING semail, date('now','+%d days');",
    zName, iInterval+1
  );
  rc = db_step(&s);
  if( rc==SQLITE_ROW ){
    @ <p>The email notification subscription for %h(db_column_text(&s,0))
    @ has been extended until %h(db_column_text(&s,1)) UTC.
  }else{
    @ <p>No such subscriber-id: %h(zName)</p>
  }
  db_finalize(&s);
  db_protect_pop();
  style_finish_page();
}


/* This is the message that gets sent to describe how to change
** or modify a subscription
*/
static const char zUnsubMsg[] =
@ To changes your subscription settings at %s visit this link:
@
@    %s/alerts/%s
@
@ To completely unsubscribe from %s, visit the following link:
@
@    %s/unsubscribe/%s
;

/*
** WEBPAGE: unsubscribe
** WEBPAGE: oneclickunsub
**
** Users visit this page to be delisted from email alerts.
**
** If a valid subscriber code is supplied in the name= query parameter,
** then that subscriber is delisted.
**
** Otherwise, If the users is logged in, then they are redirected
** to the /alerts page where they have an unsubscribe button.
**
** Non-logged-in users with no name= query parameter are invited to enter
** an email address to which will be sent the unsubscribe link that
** contains the correct subscriber code.
**
** The /unsubscribe page requires comfirmation.  The /oneclickunsub
** page unsubscribes immediately without any need to confirm.
*/
void unsubscribe_page(void){
  const char *zName = P("name");
  char *zErr = 0;
  int eErr = 0;
  unsigned int uSeed = 0;
  const char *zDecoded;
  char *zCaptcha = 0;
  int dx;
  int bSubmit;
  const char *zEAddr;
  char *zCode = 0;
  int sid = 0;

  if( zName==0 ) zName = P("scode");

  /* If a valid subscriber code is supplied, then either present the user
  ** with a confirmation, or if already confirmed, unsubscribe immediately.
  */
  if( zName
   && (sid = db_int(0, "SELECT subscriberId FROM subscriber"
                       " WHERE subscriberCode=hextoblob(%Q)", zName))!=0
  ){
    char *zUnsubName = mprintf("confirm%04x", sid);
    if( P(zUnsubName)!=0 ){
      alert_unsubscribe(sid, 1);
    }else if( sqlite3_strglob("*oneclick*",g.zPath)==0 ){
      alert_unsubscribe(sid, 0);
    }else if( P("manage")!=0 ){
      cgi_redirectf("%R/alerts/%s", zName);
    }else{
      style_header("Unsubscribe");
      form_begin(0, "%R/unsubscribe");
      @ <input type="hidden" name="scode" value="%h(zName)">
      @ <table border="0" cellpadding="10" width="100%%">
      @ <tr><td align="right">
      @ <input type="submit" name="%h(zUnsubName)" value="Unsubscribe">
      @ </td><td><big><b>&larr;</b></big></td>
      @ <td>Cancel your subscription to %h(g.zBaseURL) notifications
      @ </td><tr>
      @ <tr><td align="right">
      @ <input type="submit" name="manage" \
      @ value="Manage Subscription Settings">
      @ </td><td><big><b>&larr;</b></big></td>
      @ <td>Make other changes to your subscription preferences
      @ </td><tr>
      @ </table>
      @ </form>
      style_finish_page();
    }
    return;
  }

  /* Logged in users are redirected to the /alerts page */
  login_check_credentials();
  if( login_is_individual() ){
    cgi_redirectf("%R/alerts");
    return;
  }

  style_set_current_feature("alerts");

  zEAddr = PD("e","");
  dx = atoi(PD("dx","0"));
  bSubmit = P("submit")!=0 && P("e")!=0 && cgi_csrf_safe(2);
  if( bSubmit ){
    if( !captcha_is_correct(1) ){
      eErr = 2;
      zErr = mprintf("enter the security code shown below");
      bSubmit = 0;
    }
  }
  if( bSubmit ){
    zCode = db_text(0,"SELECT hex(subscriberCode) FROM subscriber"
                      " WHERE semail=%Q", zEAddr);
    if( zCode==0 ){
      eErr = 1;
      zErr = mprintf("not a valid email address");
      bSubmit = 0;
    }
  }
  if( bSubmit ){
    /* If we get this far, it means that a valid unsubscribe request has
    ** been submitted.  Send the appropriate email. */
    Blob hdr, body;
    AlertSender *pSender = alert_sender_new(0,0);
    blob_init(&hdr,0,0);
    blob_init(&body,0,0);
    blob_appendf(&hdr, "To: <%s>\r\n", zEAddr);
    blob_appendf(&hdr, "Subject: Unsubscribe Instructions\r\n");
    blob_appendf(&body, zUnsubMsg/*works-like:"%s%s%s%s%s%s"*/,
                  g.zBaseURL, g.zBaseURL, zCode, g.zBaseURL, g.zBaseURL, zCode);
    alert_send(pSender, &hdr, &body, 0);
    style_header("Unsubscribe Instructions Sent");
    if( pSender->zErr ){
      @ <h1>Internal Error</h1>
      @ <p>The following error was encountered while trying to send an
      @ email to %h(zEAddr):
      @ <blockquote><pre>
      @ %h(pSender->zErr)
      @ </pre></blockquote>
    }else{
      @ <p>An email has been sent to "%h(zEAddr)" that explains how to
      @ unsubscribe and/or modify your subscription settings</p>
    }
    alert_sender_free(pSender);
    style_finish_page();
    return;
  }

  /* Non-logged-in users have to enter an email address to which is
  ** sent a message containing the unsubscribe link.
  */
  style_header("Unsubscribe Request");
  @ <p>Fill out the form below to request an email message that will
  @ explain how to unsubscribe and/or change your subscription settings.</p>
  @
  form_begin(0, "%R/unsubscribe");
  @ <table class="subscribe">
  @ <tr>
  @  <td class="form_label">Email&nbsp;Address:</td>
  @  <td><input type="text" name="e" value="%h(zEAddr)" size="30"></td>
  if( eErr==1 ){
    @  <td><span class="loginError">&larr; %h(zErr)</span></td>
  }
  @ </tr>
  uSeed = captcha_seed();
  zDecoded = captcha_decode(uSeed, 0);
  zCaptcha = captcha_render(zDecoded);
  @ <tr>
  @  <td class="form_label">Security Code:</td>
  @  <td><input type="text" name="captcha" value="" size="30">
  captcha_speakit_button(uSeed, "Speak the code");
  @  <input type="hidden" name="captchaseed" value="%u(uSeed)"></td>
  if( eErr==2 ){
    @  <td><span class="loginError">&larr; %h(zErr)</span></td>
  }
  @ </tr>
  @ <tr>
  @  <td class="form_label">Options:</td>
  @  <td><label><input type="radio" name="dx" value="0" %s(dx?"":"checked")>\
  @  Modify subscription</label><br>
  @  <label><input type="radio" name="dx" value="1" %s(dx?"checked":"")>\
  @  Completely unsubscribe</label><br>
  @ <tr>
  @  <td></td>
  @  <td><input type="submit" name="submit" value="Submit"></td>
  @ </tr>
  @ </table>
  @ <div class="captcha"><table class="captcha"><tr><td><pre class="captcha">
  @ %h(zCaptcha)
  @ </pre>
  @ Enter the 8 characters above in the "Security Code" box<br/>
  @ </td></tr></table></div>
  @ </form>
  fossil_free(zErr);
  style_finish_page();
}

/*
** WEBPAGE: subscribers
**
** This page, accessible to administrators only,
** shows a list of subscriber email addresses.
** Clicking on an email takes one to the /alerts page
** for that email where the delivery settings can be
** modified.
*/
void subscriber_list_page(void){
  Blob sql;
  Stmt q;
  sqlite3_int64 iNow;
  int nTotal;
  int nPending;
  int nDel = 0;
  int iCutoff = db_get_int("email-renew-cutoff",0);
  int iWarning = db_get_int("email-renew-warning",0);
  char zCutoffClr[8];
  char zWarnClr[8];
  if( alert_webpages_disabled() ) return;
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  alert_submenu_common();
  style_submenu_element("Users","setup_ulist");
  style_set_current_feature("alerts");
  style_header("Subscriber List");
  nTotal = db_int(0, "SELECT count(*) FROM subscriber");
  nPending = db_int(0, "SELECT count(*) FROM subscriber WHERE NOT sverified");
  if( nPending>0 && P("purge") && cgi_csrf_safe(0) ){
    int nNewPending;
    db_multi_exec(
       "DELETE FROM subscriber"
       " WHERE NOT sverified AND mtime<now()-86400"
    );
    nNewPending = db_int(0, "SELECT count(*) FROM subscriber"
                            " WHERE NOT sverified");
    nDel = nPending - nNewPending;
    nPending = nNewPending;
    nTotal -= nDel;
  }
  if( nPending>0 ){
    @ <h1>%,d(nTotal) Subscribers, %,d(nPending) Pending</h1>
    if( nDel==0 && 0<db_int(0,"SELECT count(*) FROM subscriber"
            " WHERE NOT sverified AND mtime<now()-86400")
    ){
      style_submenu_element("Purge Pending","subscribers?purge");
    }
  }else{
    @ <h1>%,d(nTotal) Subscribers</h1>
  }
  if( nDel>0 ){
    @ <p>*** %d(nDel) pending subscriptions deleted ***</p>
  }
  blob_init(&sql, 0, 0);
  blob_append_sql(&sql,
    "SELECT subscriberId,"                 /* 0 */
    "       semail,"                       /* 1 */
    "       ssub,"                         /* 2 */
    "       suname,"                       /* 3 */
    "       sverified,"                    /* 4 */
    "       sdigest,"                      /* 5 */
    "       mtime,"                        /* 6 */
    "       date(sctime,'unixepoch'),"     /* 7 */
    "       (SELECT uid FROM user WHERE login=subscriber.suname)," /* 8 */
    "       coalesce(lastContact,mtime/86400)"                     /* 9 */
    " FROM subscriber"
  );
  if( P("only")!=0 ){
    blob_append_sql(&sql, " WHERE ssub LIKE '%%%q%%'", P("only"));
    style_submenu_element("Show All","%R/subscribers");
  }
  blob_append_sql(&sql," ORDER BY mtime DESC");
  db_prepare_blob(&q, &sql);
  iNow = time(0);
  memcpy(zCutoffClr, hash_color("A"), sizeof(zCutoffClr));
  memcpy(zWarnClr, hash_color("HIJ"), sizeof(zWarnClr));
  @ <table border='1' class='sortable' \
  @ data-init-sort='6' data-column-types='tttttKKt'>
  @ <thead>
  @ <tr>
  @ <th>Email
  @ <th>Events
  @ <th>Digest-Only?
  @ <th>User
  @ <th>Verified?
  @ <th>Last change
  @ <th>Last contact
  @ <th>Created
  @ </tr>
  @ </thead><tbody>
  while( db_step(&q)==SQLITE_ROW ){
    sqlite3_int64 iMtime = db_column_int64(&q, 6);
    double rAge = (iNow - iMtime)/86400.0;
    int uid = db_column_int(&q, 8);
    const char *zUname = db_column_text(&q, 3);
    sqlite3_int64 iContact = db_column_int64(&q, 9);
    double rContact = (iNow/86400.0) - iContact;
    @ <tr>
    @ <td><a href='%R/alerts?sid=%d(db_column_int(&q,0))'>\
    @ %h(db_column_text(&q,1))</a></td>
    @ <td>%h(db_column_text(&q,2))</td>
    @ <td>%s(db_column_int(&q,5)?"digest":"")</td>
    if( uid ){
      @ <td><a href='%R/setup_uedit?id=%d(uid)'>%h(zUname)</a>
    }else{
      @ <td>%h(zUname)</td>
    }
    @ <td>%s(db_column_int(&q,4)?"yes":"pending")</td>
    @ <td data-sortkey='%010llx(iMtime)'>%z(human_readable_age(rAge))</td>
    @ <td data-sortkey='%010llx(iContact)'>\
    if( iContact>iWarning ){
      @ <span>\
    }else if( iContact>iCutoff ){
      @ <span style='background-color:%s(zWarnClr);'>\
    }else{
      @ <span style='background-color:%s(zCutoffClr);'>\
    }
    @ %z(human_readable_age(rContact))</td>
    @ <td>%h(db_column_text(&q,7))</td>
    @ </tr>
  }
  @ </tbody></table>
  db_finalize(&q);
  style_table_sorter();
  style_finish_page();
}

#if LOCAL_INTERFACE
/*
** A single event that might appear in an alert is recorded as an
** instance of the following object.
**
** type values:
**
**      c       A new check-in
**      f       An original forum post
**      n       New forum threads
**      r       Replies to my forum posts
**      x       An edit to a prior forum post
**      t       A new ticket or a change to an existing ticket
**      w       A change to a wiki page
**      x       Edits to forum posts
*/
struct EmailEvent {
  int type;          /* 'c', 'f', 'n', 'r', 't', 'w', 'x' */
  int needMod;       /* Pending moderator approval */
  Blob hdr;          /* Header content, for forum entries */
  Blob txt;          /* Text description to appear in an alert */
  char *zFromName;   /* Human name of the sender */
  char *zPriors;     /* Upthread sender IDs for forum posts */
  EmailEvent *pNext; /* Next in chronological order */
};
#endif

/*
** Free a linked list of EmailEvent objects
*/
void alert_free_eventlist(EmailEvent *p){
  while( p ){
    EmailEvent *pNext = p->pNext;
    blob_reset(&p->txt);
    blob_reset(&p->hdr);
    fossil_free(p->zFromName);
    fossil_free(p->zPriors);
    fossil_free(p);
    p = pNext;
  }
}

/*
** Compute a string that is appropriate for the EmailEvent.zPriors field
** for a particular forum post.
**
** This string is an encode list of sender names and rids for all ancestors
** of the fpdi post - the post that fpid answer, the post that that parent
** post answers, and so forth back up to the root post. Duplicates sender
** names are omitted.
**
** The EmailEvent.zPriors field is used to screen events for people who
** only want to see replies to their own posts or to specific posts.
*/
static char *alert_compute_priors(int fpid){
  return db_text(0,
    "WITH priors(rid,who) AS ("
    "  SELECT firt, coalesce(euser,user)"
    "    FROM forumpost LEFT JOIN event ON fpid=objid"
    "   WHERE fpid=%d"
    "  UNION ALL"
    "  SELECT firt, coalesce(euser,user)"
    "    FROM priors, forumpost LEFT JOIN event ON fpid=objid"
    "   WHERE fpid=rid"
    ")"
    "SELECT ','||group_concat(DISTINCT 'u'||who)||"
           "','||group_concat(rid) FROM priors;",
    fpid
  );
}

/*
** Compute and return a linked list of EmailEvent objects
** corresponding to the current content of the temp.wantalert
** table which should be defined as follows:
**
**     CREATE TEMP TABLE wantalert(eventId TEXT, needMod BOOLEAN);
*/
EmailEvent *alert_compute_event_text(int *pnEvent, int doDigest){
  Stmt q;
  EmailEvent *p;
  EmailEvent anchor;
  EmailEvent *pLast;
  const char *zUrl = db_get("email-url","http://localhost:8080");
  const char *zFrom;
  const char *zSub;


  /* First do non-forum post events */
  db_prepare(&q,
    "SELECT"
    " CASE WHEN event.type='t'"
         " THEN (SELECT substr(tagname,5) FROM tag"
                " WHERE tagid=event.tagid AND tagname LIKE 'tkt-%%')"
         " ELSE blob.uuid END,"  /* 0 */
    " datetime(event.mtime),"    /* 1 */
    " coalesce(ecomment,comment)"
    "  || ' (user: ' || coalesce(euser,user,'?')"
    "  || (SELECT case when length(x)>0 then ' tags: ' || x else '' end"
    "      FROM (SELECT group_concat(substr(tagname,5), ', ') AS x"
    "              FROM tag, tagxref"
    "             WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid"
    "               AND tagxref.rid=blob.rid AND tagxref.tagtype>0))"
    "  || ')' as comment,"       /* 2 */
    " wantalert.eventId,"        /* 3 */
    " wantalert.needMod"         /* 4 */
    " FROM temp.wantalert, event, blob"
    " WHERE blob.rid=event.objid"
    "   AND event.objid=substr(wantalert.eventId,2)+0"
    "   AND (%d OR eventId NOT GLOB 'f*')"
    " ORDER BY event.mtime",
    doDigest
  );
  memset(&anchor, 0, sizeof(anchor));
  pLast = &anchor;
  *pnEvent = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zType = "";
    const char *zComment = db_column_text(&q, 2);
    p = fossil_malloc_zero( sizeof(EmailEvent) );
    pLast->pNext = p;
    pLast = p;
    p->type = db_column_text(&q, 3)[0];
    p->needMod = db_column_int(&q, 4);
    p->zFromName = 0;
    p->pNext = 0;
    switch( p->type ){
      case 'c':  zType = "Check-In";        break;
      /* case 'f':  -- forum posts omitted from this loop.  See below */
      case 't':  zType = "Ticket Change";   break;
      case 'w': {
        zType = "Wiki Edit";
        switch( zComment ? *zComment : 0 ){
          case ':': ++zComment; break;
          case '+': zType = "Wiki Added"; ++zComment; break;
          case '-': zType = "Wiki Removed"; ++zComment; break;
        }
        break;
      }
    }
    blob_init(&p->hdr, 0, 0);
    blob_init(&p->txt, 0, 0);
    blob_appendf(&p->txt,"== %s %s ==\n%s\n%s/info/%.20s\n",
      db_column_text(&q,1),
      zType,
      zComment,
      zUrl,
      db_column_text(&q,0)
    );
    if( p->needMod ){
      blob_appendf(&p->txt,
        "** Pending moderator approval (%s/modreq) **\n",
        zUrl
      );
    }
    (*pnEvent)++;
  }
  db_finalize(&q);

  /* Early-out if forumpost is not a table in this repository */
  if( !db_table_exists("repository","forumpost") ){
    return anchor.pNext;
  }

  /* For digests, the previous loop also handled forumposts already */
  if( doDigest ){
    return anchor.pNext;
  }

  /* If we reach this point, it means that forumposts exist and this
  ** is a normal email alert.  Construct full-text forum post alerts
  ** using a format that enables them to be sent as separate emails.
  */
  db_prepare(&q,
    "SELECT"
    " forumpost.fpid,"                                     /* 0: fpid */
    " (SELECT uuid FROM blob WHERE rid=forumpost.fpid),"   /* 1: hash */
    " datetime(event.mtime),"                              /* 2: date/time */
    " substr(comment,instr(comment,':')+2),"               /* 3: comment */
    " (WITH thread(fpid,fprev) AS ("
    "    SELECT fpid,fprev FROM forumpost AS tx"
    "     WHERE tx.froot=forumpost.froot),"
    "  basepid(fpid,bpid) AS ("
    "    SELECT fpid, fpid FROM thread WHERE fprev IS NULL"
    "    UNION ALL"
    "    SELECT thread.fpid, basepid.bpid FROM  basepid, thread"
    "     WHERE basepid.fpid=thread.fprev)"
    "  SELECT uuid FROM blob, basepid"
    "   WHERE basepid.fpid=forumpost.firt"
    "     AND blob.rid=basepid.bpid),"                     /* 4: in-reply-to */
    " wantalert.needMod,"                                  /* 5: moderated */
    " coalesce(display_name(info),euser,user),"            /* 6: user */
    " forumpost.fprev IS NULL"                             /* 7: is an edit */
    " FROM temp.wantalert, event, forumpost"
    "      LEFT JOIN user ON (login=coalesce(euser,user))"
    " WHERE event.objid=substr(wantalert.eventId,2)+0"
    "   AND eventId GLOB 'f*'"
    "   AND forumpost.fpid=event.objid"
    " ORDER BY event.mtime"
  );
  zFrom = db_get("email-self",0);
  zSub = db_get("email-subname","");
  while( db_step(&q)==SQLITE_ROW ){
    int fpid = db_column_int(&q,0);
    Manifest *pPost = manifest_get(fpid, CFTYPE_FORUM, 0);
    const char *zIrt;
    const char *zUuid;
    const char *zTitle;
    const char *z;
    if( pPost==0 ) continue;
    p = fossil_malloc( sizeof(EmailEvent) );
    pLast->pNext = p;
    pLast = p;
    p->type = db_column_int(&q,7) ? 'f' : 'x';
    p->needMod = db_column_int(&q, 5);
    z = db_column_text(&q,6);
    p->zFromName = z && z[0] ? fossil_strdup(z) : 0;
    p->zPriors = alert_compute_priors(fpid);
    p->pNext = 0;
    blob_init(&p->hdr, 0, 0);
    zUuid = db_column_text(&q, 1);
    zTitle = db_column_text(&q, 3);
    if( p->needMod ){
      blob_appendf(&p->hdr, "Subject: %s Pending Moderation: %s\r\n",
                   zSub, zTitle);
    }else{
      blob_appendf(&p->hdr, "Subject: %s %s\r\n", zSub, zTitle);
      blob_appendf(&p->hdr, "Message-Id: <%.32s@%s>\r\n",
                   zUuid, alert_hostname(zFrom));
      zIrt = db_column_text(&q, 4);
      if( zIrt && zIrt[0] ){
        blob_appendf(&p->hdr, "In-Reply-To: <%.32s@%s>\r\n",
                     zIrt, alert_hostname(zFrom));
      }
    }
    blob_init(&p->txt, 0, 0);
    if( p->needMod ){
      blob_appendf(&p->txt,
        "** Pending moderator approval (%s/modreq) **\n",
        zUrl
      );
    }
    blob_appendf(&p->txt,
      "Forum post by %s on %s\n",
      pPost->zUser, db_column_text(&q, 2));
    blob_appendf(&p->txt, "%s/forumpost/%S\n\n", zUrl, zUuid);
    blob_append(&p->txt, pPost->zWiki, -1);
    manifest_destroy(pPost);
    (*pnEvent)++;
  }
  db_finalize(&q);

  return anchor.pNext;
}

/*
** Put a header on an alert email
*/
void email_header(Blob *pOut){
  blob_appendf(pOut,
    "This is an automated email reporting changes "
    "on Fossil repository %s (%s/timeline)\n",
    db_get("email-subname","(unknown)"),
    db_get("email-url","http://localhost:8080"));
}

/*
** COMMAND:  test-alert
**
** Usage: %fossil test-alert EVENTID ...
**
** Generate the text of an email alert for all of the EVENTIDs
** listed on the command-line.  Or if no events are listed on the
** command line, generate text for all events named in the
** pending_alert table.  The text of the email alerts appears on
** standard output.
**
** This command is intended for testing and debugging Fossil itself,
** for example when enhancing the email alert system or fixing bugs
** in the email alert system.  If you are not making changes to the
** Fossil source code, this command is probably not useful to you.
**
** EVENTIDs are text.  The first character is 'c', 'f', 't', or 'w'
** for check-in, forum, ticket, or wiki.  The remaining text is a
** integer that references the EVENT.OBJID value for the event.
** Run /timeline?showid to see these OBJID values.
**
** Options:
**      --digest           Generate digest alert text
**      --needmod          Assume all events are pending moderator approval
*/
void test_alert_cmd(void){
  Blob out;
  int nEvent;
  int needMod;
  int doDigest;
  EmailEvent *pEvent, *p;

  doDigest = find_option("digest",0,0)!=0;
  needMod = find_option("needmod",0,0)!=0;
  db_find_and_open_repository(0, 0);
  verify_all_options();
  db_begin_transaction();
  alert_schema(0);
  db_multi_exec("CREATE TEMP TABLE wantalert(eventid TEXT, needMod BOOLEAN)");
  if( g.argc==2 ){
    db_multi_exec(
      "INSERT INTO wantalert(eventId,needMod)"
      " SELECT eventid, %d FROM pending_alert", needMod);
  }else{
    int i;
    for(i=2; i<g.argc; i++){
      db_multi_exec("INSERT INTO wantalert(eventId,needMod) VALUES(%Q,%d)",
           g.argv[i], needMod);
    }
  }
  blob_init(&out, 0, 0);
  email_header(&out);
  pEvent = alert_compute_event_text(&nEvent, doDigest);
  for(p=pEvent; p; p=p->pNext){
    blob_append(&out, "\n", 1);
    if( blob_size(&p->hdr) ){
      blob_append(&out, blob_buffer(&p->hdr), blob_size(&p->hdr));
      blob_append(&out, "\n", 1);
    }
    blob_append(&out, blob_buffer(&p->txt), blob_size(&p->txt));
  }
  alert_free_eventlist(pEvent);
  fossil_print("%s", blob_str(&out));
  blob_reset(&out);
  db_end_transaction(0);
}

/*
** COMMAND:  test-add-alerts
**
** Usage: %fossil test-add-alerts [OPTIONS] EVENTID ...
**
** Add one or more events to the pending_alert queue.  Use this
** command during testing to force email notifications for specific
** events.
**
** EVENTIDs are text.  The first character is 'c', 'f', 't', or 'w'
** for check-in, forum, ticket, or wiki.  The remaining text is a
** integer that references the EVENT.OBJID value for the event.
** Run /timeline?showid to see these OBJID values.
**
** Options:
**    --backoffice        Run alert_backoffice() after all alerts have
**                        been added.  This will cause the alerts to be
**                        sent out with the SENDALERT_TRACE option.
**    --debug             Like --backoffice, but add the SENDALERT_STDOUT
**                        so that emails are printed to standard output
**                        rather than being sent.
**    --digest            Process emails using SENDALERT_DIGEST
*/
void test_add_alert_cmd(void){
  int i;
  int doAuto = find_option("backoffice",0,0)!=0;
  unsigned mFlags = 0;
  if( find_option("debug",0,0)!=0 ){
    doAuto = 1;
    mFlags = SENDALERT_STDOUT;
  }
  if( find_option("digest",0,0)!=0 ){
    mFlags |= SENDALERT_DIGEST;
  }
  db_find_and_open_repository(0, 0);
  verify_all_options();
  db_begin_write();
  alert_schema(0);
  for(i=2; i<g.argc; i++){
    db_multi_exec("REPLACE INTO pending_alert(eventId) VALUES(%Q)", g.argv[i]);
  }
  db_end_transaction(0);
  if( doAuto ){
    alert_backoffice(SENDALERT_TRACE|mFlags);
  }
}

/*
** Minimum number of days between renewal messages
*/
#define ALERT_RENEWAL_MSG_FREQUENCY  7   /* Do renewals at most once/week */

/*
** Construct the header and body for an email message that will alert
** a subscriber that their subscriptions are about to expire.
*/
static void alert_renewal_msg(
  Blob *pHdr,            /* Write email header here */
  Blob *pBody,           /* Write email body here */
  const char *zCode,     /* The subscriber code */
  int lastContact,       /* Last contact (days since 1970) */
  const char *zEAddr,    /* Subscriber email address.  Send to this. */
  const char *zSub,      /* Subscription codes */
  const char *zRepoName, /* Name of the sending Fossil repostory */
  const char *zUrl       /* URL for the sending Fossil repostory */
){
  blob_appendf(pHdr,"To: <%s>\r\n", zEAddr);
  blob_appendf(pHdr,"Subject: %s Subscription to %s expires soon\r\n",
    zRepoName, zUrl);
  blob_appendf(pBody,
    "\nTo renew your subscription, click the following link:\n"
    "\n  %s/renew/%s\n\n",
    zUrl, zCode
  );
  blob_appendf(pBody,
    "You are currently receiving email notification for the following events\n"
    "on the %s Fossil repository at %s:\n\n",
    zRepoName, zUrl
  );
  if( strchr(zSub, 'a') )  blob_appendf(pBody, "  *  Announcements\n");
  if( strchr(zSub, 'c') )  blob_appendf(pBody, "  *  Check-ins\n");
  if( strchr(zSub, 'f') )  blob_appendf(pBody, "  *  Forum posts\n");
  if( strchr(zSub, 't') )  blob_appendf(pBody, "  *  Ticket changes\n");
  if( strchr(zSub, 'w') )  blob_appendf(pBody, "  *  Wiki changes\n");
  blob_appendf(pBody, "\n"
    "If you take no action, your subscription will expire and you will be\n"
    "unsubscribed in about %d days.  To make other changes or to unsubscribe\n"
    "immediately, visit the following webpage:\n\n"
    "  %s/alerts/%s\n\n",
    ALERT_RENEWAL_MSG_FREQUENCY, zUrl, zCode
  );
}

/*
** If zUser is a sender of one of the ancestors of a forum post
** (if zUser appears in zPriors) then return true.
*/
static int alert_in_priors(const char *zUser, const char *zPriors){
  int n = (int)strlen(zUser);
  char zBuf[200];
  if( n>195 ) return 0;
  if( zPriors==0 || zPriors[0]==0 ) return 0;
  zBuf[0] = ',';
  zBuf[1] = 'u';
  memcpy(zBuf+2, zUser, n+1);
  return strstr(zPriors, zBuf)!=0;
}

#if INTERFACE
/*
** Flags for alert_send_alerts()
*/
#define SENDALERT_DIGEST      0x0001    /* Send a digest */
#define SENDALERT_PRESERVE    0x0002    /* Do not mark the task as done */
#define SENDALERT_STDOUT      0x0004    /* Print emails instead of sending */
#define SENDALERT_TRACE       0x0008    /* Trace operation for debugging */
#define SENDALERT_RENEWAL     0x0010    /* Send renewal notices */

#endif /* INTERFACE */

/*
** Send alert emails to subscribers.
**
** This procedure is run by either the backoffice, or in response to the
** "fossil alerts send" command.  Details of operation are controlled by
** the flags parameter.
**
** Here is a summary of what happens:
**
**   (1) Create a TEMP table wantalert(eventId,needMod) and fill it with
**       all the events that we want to send alerts about.  The needMod
**       flags is set if and only if the event is still awaiting
**       moderator approval.  Events with the needMod flag are only
**       shown to users that have moderator privileges.
**
**   (2) Call alert_compute_event_text() to compute a list of EmailEvent
**       objects that describe all events about which we want to send
**       alerts.
**
**   (3) Loop over all subscribers.  Compose and send one or more email
**       messages to each subscriber that describe the events for
**       which the subscriber has expressed interest and has
**       appropriate privileges.
**
**   (4) Update the pending_alerts table to indicate that alerts have been
**       sent.
**
** Update 2018-08-09:  Do step (3) before step (4).  Update the
** pending_alerts table *before* the emails are sent.  That way, if
** the process malfunctions or crashes, some notifications may never
** be sent.  But that is better than some recurring bug causing
** subscribers to be flooded with repeated notifications every 60
** seconds!
*/
int alert_send_alerts(u32 flags){
  EmailEvent *pEvents, *p;
  int nEvent = 0;
  int nSent = 0;
  Stmt q;
  const char *zDigest = "false";
  Blob hdr, body;
  const char *zUrl;
  const char *zRepoName;
  const char *zFrom;
  const char *zDest = (flags & SENDALERT_STDOUT) ? "stdout" : 0;
  AlertSender *pSender = 0;
  u32 senderFlags = 0;
  int iInterval = 0;              /* Subscription renewal interval */

  if( g.fSqlTrace ) fossil_trace("-- BEGIN alert_send_alerts(%u)\n", flags);
  alert_schema(0);
  if( !alert_enabled() && (flags & SENDALERT_STDOUT)==0 ) goto send_alert_done;
  zUrl = db_get("email-url",0);
  if( zUrl==0 ) goto send_alert_done;
  zRepoName = db_get("email-subname",0);
  if( zRepoName==0 ) goto send_alert_done;
  zFrom = db_get("email-self",0);
  if( zFrom==0 ) goto send_alert_done;
  if( flags & SENDALERT_TRACE ){
    senderFlags |= ALERT_TRACE;
  }
  pSender = alert_sender_new(zDest, senderFlags);

  /* Step (1):  Compute the alerts that need sending
  */
  db_multi_exec(
    "DROP TABLE IF EXISTS temp.wantalert;"
    "CREATE TEMP TABLE wantalert(eventId TEXT, needMod BOOLEAN, sentMod);"
  );
  if( flags & SENDALERT_DIGEST ){
    /* Unmoderated changes are never sent as part of a digest */
    db_multi_exec(
      "INSERT INTO wantalert(eventId,needMod)"
      " SELECT eventid, 0"
      "   FROM pending_alert"
      "  WHERE sentDigest IS FALSE"
      "    AND NOT EXISTS(SELECT 1 FROM private WHERE rid=substr(eventid,2));"
    );
    zDigest = "true";
  }else{
    /* Immediate alerts might include events that are subject to
    ** moderator approval */
    db_multi_exec(
      "INSERT INTO wantalert(eventId,needMod,sentMod)"
      " SELECT eventid,"
      "        EXISTS(SELECT 1 FROM private WHERE rid=substr(eventid,2)),"
      "        sentMod"
      "   FROM pending_alert"
      "  WHERE sentSep IS FALSE;"
      "DELETE FROM wantalert WHERE needMod AND sentMod;"
    );
  }
  if( g.fSqlTrace ){
    fossil_trace("-- wantalert contains %d rows\n",
        db_int(0, "SELECT count(*) FROM wantalert")
    );
  }

  /* Step 2: compute EmailEvent objects for every notification that
  ** needs sending.
  */
  pEvents = alert_compute_event_text(&nEvent, (flags & SENDALERT_DIGEST)!=0);
  if( nEvent==0 ) goto send_alert_expiration_warnings;

  /* Step 4a: Update the pending_alerts table to designate the
  ** alerts as having all been sent.  This is done *before* step (3)
  ** so that a crash will not cause alerts to be sent multiple times.
  ** Better a missed alert than being spammed with hundreds of alerts
  ** due to a bug.
  */
  if( (flags & SENDALERT_PRESERVE)==0 ){
    if( flags & SENDALERT_DIGEST ){
      db_multi_exec(
        "UPDATE pending_alert SET sentDigest=true"
        " WHERE eventid IN (SELECT eventid FROM wantalert);"
      );
    }else{
      db_multi_exec(
        "UPDATE pending_alert SET sentSep=true"
        " WHERE eventid IN (SELECT eventid FROM wantalert WHERE NOT needMod);"
        "UPDATE pending_alert SET sentMod=true"
        " WHERE eventid IN (SELECT eventid FROM wantalert WHERE needMod);"
      );
    }
  }

  /* Step 3: Loop over subscribers.  Send alerts
  */
  blob_init(&hdr, 0, 0);
  blob_init(&body, 0, 0);
  db_prepare(&q,
     "SELECT"
     " hex(subscriberCode),"  /* 0 */
     " semail,"               /* 1 */
     " ssub,"                 /* 2 */
     " fullcap(user.cap),"    /* 3 */
     " suname"                /* 4 */
     " FROM subscriber LEFT JOIN user ON (login=suname)"
     " WHERE sverified"
     "   AND NOT sdonotcall"
     "   AND sdigest IS %s"
     "   AND coalesce(subscriber.lastContact*86400,subscriber.mtime)>=%d",
     zDigest/*safe-for-%s*/,
     db_get_int("email-renew-cutoff",0)
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zCode = db_column_text(&q, 0);
    const char *zSub = db_column_text(&q, 2);
    const char *zEmail = db_column_text(&q, 1);
    const char *zCap = db_column_text(&q, 3);
    const char *zUser = db_column_text(&q, 4);
    int nHit = 0;
    for(p=pEvents; p; p=p->pNext){
      if( strchr(zSub,p->type)==0 ){
        if( p->type!='f' ) continue;
        if( strchr(zSub,'n')!=0 && (p->zPriors==0 || p->zPriors[0]==0) ){
          /* New post: accepted */
        }else if( strchr(zSub,'r')!=0 && zUser!=0
               && alert_in_priors(zUser, p->zPriors) ){
          /* A follow-up to a post written by the user: accept */
        }else{
          continue;
        }
      }
      if( p->needMod ){
        /* For events that require moderator approval, only send an alert
        ** if the recipient is a moderator for that type of event.  Setup
        ** and Admin users always get notified. */
        char xType = '*';
        if( strpbrk(zCap,"as")==0 ){
          switch( p->type ){
            case 'x': case 'f':
            case 'n': case 'r':  xType = '5';  break;
            case 't':            xType = 'q';  break;
            case 'w':            xType = 'l';  break;
          }
          if( strchr(zCap,xType)==0 ) continue;
        }
      }else if( strchr(zCap,'s')!=0 || strchr(zCap,'a')!=0 ){
        /* Setup and admin users can get any notification that does not
        ** require moderation */
      }else{
        /* Other users only see the alert if they have sufficient
        ** privilege to view the event itself */
        char xType = '*';
        switch( p->type ){
          case 'c':            xType = 'o';  break;
          case 'x': case 'f':
          case 'n': case 'r':  xType = '2';  break;
          case 't':            xType = 'r';  break;
          case 'w':            xType = 'j';  break;
        }
        if( strchr(zCap,xType)==0 ) continue;
      }
      if( blob_size(&p->hdr)>0 ){
        /* This alert should be sent as a separate email */
        Blob fhdr, fbody;
        blob_init(&fhdr, 0, 0);
        blob_appendf(&fhdr, "To: <%s>\r\n", zEmail);
        blob_append(&fhdr, blob_buffer(&p->hdr), blob_size(&p->hdr));
        blob_init(&fbody, blob_buffer(&p->txt), blob_size(&p->txt));
        blob_appendf(&fhdr, "List-Unsubscribe: <%s/oneclickunsub/%s>\r\n",
                     zUrl, zCode);
        blob_appendf(&fhdr,
                   "List-Unsubscribe-Post: List-Unsubscribe=One-Click\r\n");
        blob_appendf(&fbody, "\n-- \nUnsubscribe: %s/unsubscribe/%s\n",
           zUrl, zCode);
        /* blob_appendf(&fbody, "Subscription settings: %s/alerts/%s\n",
        **   zUrl, zCode); */
        alert_send(pSender,&fhdr,&fbody,p->zFromName);
        nSent++;
        blob_reset(&fhdr);
        blob_reset(&fbody);
      }else{
        /* Events other than forum posts are gathered together into
        ** a single email message */
        if( nHit==0 ){
          blob_appendf(&hdr,"To: <%s>\r\n", zEmail);
          blob_appendf(&hdr,"Subject: %s activity alert\r\n", zRepoName);
          blob_appendf(&body,
            "This is an automated email sent by the Fossil repository "
            "at %s to report changes.\n",
            zUrl
          );
        }
        nHit++;
        blob_append(&body, "\n", 1);
        blob_append(&body, blob_buffer(&p->txt), blob_size(&p->txt));
      }
    }
    if( nHit==0 ) continue;
    blob_appendf(&hdr, "List-Unsubscribe: <%s/oneclickunsub/%s>\r\n",
         zUrl, zCode);
    blob_appendf(&hdr, "List-Unsubscribe-Post: List-Unsubscribe=One-Click\r\n");
    blob_appendf(&body,"\n-- \nSubscription info: %s/alerts/%s\n",
         zUrl, zCode);
    alert_send(pSender,&hdr,&body,0);
    nSent++;
    blob_truncate(&hdr, 0);
    blob_truncate(&body, 0);
  }
  blob_reset(&hdr);
  blob_reset(&body);
  db_finalize(&q);
  alert_free_eventlist(pEvents);

  /* Step 4b: Update the pending_alerts table to remove all of the
  ** alerts that have been completely sent.
  */
  db_multi_exec("DELETE FROM pending_alert WHERE sentDigest AND sentSep;");

  /* Send renewal messages to subscribers whose subscriptions are about
  ** to expire.  Only do this if:
  **
  **  (1)  email-renew-interval is 14 or greater (or in other words if
  **       subscription expiration is enabled).
  **
  **  (2)  The SENDALERT_RENEWAL flag is set
  */
send_alert_expiration_warnings:
  if( (flags & SENDALERT_RENEWAL)!=0
   && (iInterval = db_get_int("email-renew-interval",0))>=14
  ){
    int iNow = (int)(time(0)/86400);
    int iOldWarn = db_get_int("email-renew-warning",0);
    int iNewWarn = iNow - iInterval + ALERT_RENEWAL_MSG_FREQUENCY;
    if( iNewWarn >= iOldWarn + ALERT_RENEWAL_MSG_FREQUENCY ){
      db_prepare(&q,
         "SELECT"
         "  hex(subscriberCode),"     /* 0 */
         "  lastContact,"             /* 1 */
         "  semail,"                  /* 2 */
         "  ssub"                     /* 3 */
         " FROM subscriber"
         " WHERE lastContact<=%d AND lastContact>%d"
         "   AND NOT sdonotcall"
         "   AND length(sdigest)>0",
         iNewWarn, iOldWarn
      );
      while( db_step(&q)==SQLITE_ROW ){
        Blob hdr, body;
        blob_init(&hdr, 0, 0);
        blob_init(&body, 0, 0);
        alert_renewal_msg(&hdr, &body,
           db_column_text(&q,0),
           db_column_int(&q,1),
           db_column_text(&q,2),
           db_column_text(&q,3),
           zRepoName, zUrl);
        alert_send(pSender,&hdr,&body,0);
        blob_reset(&hdr);
        blob_reset(&body);
      }
      db_finalize(&q);
      if( (flags & SENDALERT_PRESERVE)==0 ){
        if( iOldWarn>0 ){
          db_set_int("email-renew-cutoff", iOldWarn, 0);
        }
        db_set_int("email-renew-warning", iNewWarn, 0);
      }
    }
  }

send_alert_done:
  alert_sender_free(pSender);
  if( g.fSqlTrace ) fossil_trace("-- END alert_send_alerts(%u)\n", flags);
  return nSent;
}

/*
** Do backoffice processing for email notifications.  In other words,
** check to see if any email notifications need to occur, and then
** do them.
**
** This routine is intended to run in the background, after webpages.
**
** The mFlags option is zero or more of the SENDALERT_* flags.  Normally
** this flag is zero, but the test-set-alert command sets it to
** SENDALERT_TRACE.
*/
int alert_backoffice(u32 mFlags){
  int iJulianDay;
  int nSent = 0;
  if( !alert_tables_exist() ) return 0;
  nSent = alert_send_alerts(mFlags);
  iJulianDay = db_int(0, "SELECT julianday('now')");
  if( iJulianDay>db_get_int("email-last-digest",0) ){
    db_set_int("email-last-digest",iJulianDay,0);
    nSent += alert_send_alerts(SENDALERT_DIGEST|SENDALERT_RENEWAL|mFlags);
  }
  return nSent;
}

/*
** WEBPAGE: contact_admin
**
** A web-form to send an email message to the repository administrator,
** or (with appropriate permissions) to anybody.
*/
void contact_admin_page(void){
  const char *zAdminEmail = db_get("email-admin",0);
  unsigned int uSeed = 0;
  const char *zDecoded;
  char *zCaptcha = 0;

  login_check_credentials();
  style_set_current_feature("alerts");
  if( zAdminEmail==0 || zAdminEmail[0]==0 ){
    style_header("Outbound Email Disabled");
    @ <p>Outbound email is disabled on this repository
    style_finish_page();
    return;
  }
  if( P("submit")!=0
   && P("subject")!=0
   && P("msg")!=0
   && P("from")!=0
   && cgi_csrf_safe(2)
   && captcha_is_correct(0)
  ){
    Blob hdr, body;
    AlertSender *pSender = alert_sender_new(0,0);
    blob_init(&hdr, 0, 0);
    blob_appendf(&hdr, "To: <%s>\r\nSubject: %s administrator message\r\n",
                 zAdminEmail, db_get("email-subname","Fossil Repo"));
    blob_init(&body, 0, 0);
    blob_appendf(&body, "Message from [%s]\n", PT("from")/*safe-for-%s*/);
    blob_appendf(&body, "Subject: [%s]\n\n", PT("subject")/*safe-for-%s*/);
    blob_appendf(&body, "%s", PT("msg")/*safe-for-%s*/);
    alert_send(pSender, &hdr, &body, 0);
    style_header("Message Sent");
    if( pSender->zErr ){
      @ <h1>Internal Error</h1>
      @ <p>The following error was reported by the system:
      @ <blockquote><pre>
      @ %h(pSender->zErr)
      @ </pre></blockquote>
    }else{
      @ <p>Your message has been sent to the repository administrator.
      @ Thank you for your input.</p>
    }
    alert_sender_free(pSender);
    style_finish_page();
    return;
  }
  if( captcha_needed() ){
    uSeed = captcha_seed();
    zDecoded = captcha_decode(uSeed, 0);
    zCaptcha = captcha_render(zDecoded);
  }
  style_set_current_feature("alerts");
  style_header("Message To Administrator");
  form_begin(0, "%R/contact_admin");
  @ <p>Enter a message to the repository administrator below:</p>
  @ <table class="subscribe">
  if( zCaptcha ){
    @ <tr>
    @  <td class="form_label">Security&nbsp;Code:</td>
    @  <td><input type="text" name="captcha" value="" size="10">
    captcha_speakit_button(uSeed, "Speak the code");
    @  <input type="hidden" name="captchaseed" value="%u(uSeed)"></td>
    @ </tr>
  }
  @ <tr>
  @  <td class="form_label">Your&nbsp;Email&nbsp;Address:</td>
  @  <td><input type="text" name="from" value="%h(PT("from"))" size="30"></td>
  @ </tr>
  @ <tr>
  @  <td class="form_label">Subject:</td>
  @  <td><input type="text" name="subject" value="%h(PT("subject"))"\
  @  size="80"></td>
  @ </tr>
  @ <tr>
  @  <td class="form_label">Message:</td>
  @  <td><textarea name="msg" cols="80" rows="10" wrap="virtual">\
  @ %h(PT("msg"))</textarea>
  @ </tr>
  @ <tr>
  @   <td></td>
  @   <td><input type="submit" name="submit" value="Send Message">
  @ </tr>
  @ </table>
  if( zCaptcha ){
    @ <div class="captcha"><table class="captcha"><tr><td><pre class="captcha">
    @ %h(zCaptcha)
    @ </pre>
    @ Enter the 8 characters above in the "Security Code" box<br/>
    @ </td></tr></table></div>
  }
  @ </form>
  style_finish_page();
}

/*
** Send an annoucement message described by query parameter.
** Permission to do this has already been verified.
*/
static char *alert_send_announcement(void){
  AlertSender *pSender;
  char *zErr;
  const char *zTo = PT("to");
  char *zSubject = PT("subject");
  int bAll = PB("all");
  int bAA = PB("aa");
  int bMods = PB("mods");
  const char *zSub = db_get("email-subname", "[Fossil Repo]");
  int bTest2 = fossil_strcmp(P("name"),"test2")==0;
  Blob hdr, body;
  blob_init(&body, 0, 0);
  blob_init(&hdr, 0, 0);
  blob_appendf(&body, "%s", PT("msg")/*safe-for-%s*/);
  pSender = alert_sender_new(bTest2 ? "blob" : 0, 0);
  if( zTo[0] ){
    blob_appendf(&hdr, "To: <%s>\r\nSubject: %s %s\r\n", zTo, zSub, zSubject);
    alert_send(pSender, &hdr, &body, 0);
  }
  if( bAll || bAA || bMods ){
    Stmt q;
    int nUsed = blob_size(&body);
    const char *zURL =  db_get("email-url",0);
    if( bAll ){
      db_prepare(&q, "SELECT semail, hex(subscriberCode) FROM subscriber "
                     " WHERE sverified AND NOT sdonotcall");
    }else if( bAA ){
      db_prepare(&q, "SELECT semail, hex(subscriberCode) FROM subscriber "
                     " WHERE sverified AND NOT sdonotcall"
                     " AND ssub LIKE '%%a%%'");
    }else if( bMods ){
      db_prepare(&q,
        "SELECT semail, hex(subscriberCode)"
        "  FROM subscriber, user "
        " WHERE sverified AND NOT sdonotcall"
        "   AND suname=login"
        "   AND fullcap(cap) GLOB '*5*'");
    }
    while( db_step(&q)==SQLITE_ROW ){
      const char *zCode = db_column_text(&q, 1);
      zTo = db_column_text(&q, 0);
      blob_truncate(&hdr, 0);
      blob_appendf(&hdr, "To: <%s>\r\nSubject: %s %s\r\n", zTo, zSub, zSubject);
      if( zURL ){
        blob_truncate(&body, nUsed);
        blob_appendf(&body,"\n-- \nSubscription info: %s/alerts/%s\n",
           zURL, zCode);
      }
      alert_send(pSender, &hdr, &body, 0);
    }
    db_finalize(&q);
  }
  if( bTest2 ){
    /* If the URL is /announce/test2 instead of just /announce, then no
    ** email is actually sent.  Instead, the text of the email that would
    ** have been sent is displayed in the result window. */
    @ <pre style='border: 2px solid blue; padding: 1ex'>
    @ %h(blob_str(&pSender->out))
    @ </pre>
  }
  zErr = pSender->zErr;
  pSender->zErr = 0;
  alert_sender_free(pSender);
  return zErr;
}


/*
** WEBPAGE: announce
**
** A web-form, available to users with the "Send-Announcement" or "A"
** capability, that allows one to send announcements to whomever
** has subscribed to receive announcements.  The administrator can
** also send a message to an arbitrary email address and/or to all
** subscribers regardless of whether or not they have elected to
** receive announcements.
*/
void announce_page(void){
  const char *zAction = "announce"
    /* Maintenance reminder: we need an explicit action=THIS_PAGE on the
    ** form element to avoid that a URL arg of to=... passed to this
    ** page ends up overwriting the form-posted "to" value. This
    ** action value differs for the test1 request path.
    */;

  login_check_credentials();
  if( !g.perm.Announce ){
    login_needed(0);
    return;
  }
  style_set_current_feature("alerts");
  if( fossil_strcmp(P("name"),"test1")==0 ){
    /* Visit the /announce/test1 page to see the CGI variables */
    zAction = "announce/test1";
    @ <p style='border: 1px solid black; padding: 1ex;'>
    cgi_print_all(0, 0, 0);
    @ </p>
  }else if( P("submit")!=0 && cgi_csrf_safe(2) ){
    char *zErr = alert_send_announcement();
    style_header("Announcement Sent");
    if( zErr ){
      @ <h1>Internal Error</h1>
      @ <p>The following error was reported by the system:
      @ <blockquote><pre>
      @ %h(zErr)
      @ </pre></blockquote>
    }else{
      @ <p>The announcement has been sent.
      @ <a href="%h(PD("REQUEST_URI","/"))">Send another</a></p>
    }
    style_finish_page();
    return;
  } else if( !alert_enabled() ){
    style_header("Cannot Send Announcement");
    @ <p>Either you have no subscribers yet, or email alerts are not yet
    @ <a href="https://fossil-scm.org/fossil/doc/trunk/www/alerts.md">set up</a>
    @ for this repository.</p>
    return;
  }

  style_header("Send Announcement");
  @ <form method="POST" action="%R/%s(zAction)">
  login_insert_csrf_secret();
  @ <table class="subscribe">
  if( g.perm.Admin ){
    int aa = PB("aa");
    int all = PB("all");
    int aMod = PB("mods");
    const char *aack = aa ? "checked" : "";
    const char *allck = all ? "checked" : "";
    const char *modck = aMod ? "checked" : "";
    @ <tr>
    @  <td class="form_label">To:</td>
    @  <td><input type="text" name="to" value="%h(PT("to"))" size="30"><br>
    @  <label><input type="checkbox" name="aa" %s(aack)> \
    @  All "announcement" subscribers</label> \
    @  <a href="%R/subscribers?only=a" target="_blank">(list)</a><br>
    @  <label><input type="checkbox" name="all" %s(allck)> \
    @  All subscribers</label> \
    @  <a href="%R/subscribers" target="_blank">(list)</a><br>
    @  <label><input type="checkbox" name="mods" %s(modck)> \
    @  All moderators</label> \
    @  <a href="%R/setup_ulist?with=5" target="_blank">(list)</a><br></td>
    @ </tr>
  }
  @ <tr>
  @  <td class="form_label">Subject:</td>
  @  <td><input type="text" name="subject" value="%h(PT("subject"))"\
  @  size="80"></td>
  @ </tr>
  @ <tr>
  @  <td class="form_label">Message:</td>
  @  <td><textarea name="msg" cols="80" rows="10" wrap="virtual">\
  @ %h(PT("msg"))</textarea>
  @ </tr>
  @ <tr>
  @   <td></td>
  if( fossil_strcmp(P("name"),"test2")==0 ){
    @   <td><input type="submit" name="submit" value="Dry Run">
  }else{
    @   <td><input type="submit" name="submit" value="Send Message">
  }
  @ </tr>
  @ </table>
  @ </form>
  style_finish_page();
}
Added src/alerts/bflat2.wav.

cannot compute difference between binary files

Added src/alerts/bflat3.wav.

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Added src/alerts/bloop.wav.

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Added src/alerts/mkwav.c.
























































































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/*
** This C program was used to generate the "g-minor-triad.wav" file.
** A small modification generated the "b-flat.wav" file.
**
** This code is saved as an historical reference.  It is not part
** of Fossil.
*/
#include <stdio.h>
#include <math.h>
#include <stdlib.h>

/*
** Write a four-byte little-endian integer value to out.
*/
void write_int4(FILE *out, unsigned int i){
  unsigned char z[4];
  z[0] = i&0xff;
  z[1] = (i>>8)&0xff;
  z[2] = (i>>16)&0xff;
  z[3] = (i>>24)&0xff;
  fwrite(z, 4, 1, out);
}

/*
** Write out the WAV file
*/
void write_wave(
  const char *zFilename,    /* The file to write */
  unsigned int nData,       /* Bytes of data */
  unsigned char *aData      /* 8000 samples/sec, 8 bit samples */
){
  const unsigned char aWavFmt[] = {
    0x57,  0x41,  0x56, 0x45,    /* "WAVE" */
    0x66,  0x6d,  0x74, 0x20,    /* "fmt " */
    0x10,  0x00,  0x00, 0x00,    /* 16 bytes in the "fmt " section */
    0x01,  0x00,                 /* FormatTag: WAVE_FORMAT_PCM */
    0x01,  0x00,                 /* 1 channel */
    0x40,  0x1f,  0x00, 0x00,    /* 8000 samples/second */
    0x40,  0x1f,  0x00, 0x00,    /* 8000 bytes/second */
    0x01,  0x00,                 /* Block alignment */
    0x08,  0x00,                 /* bits/sample */
    0x64,  0x61,  0x74, 0x61,    /* "data" */
  };
  FILE *out = fopen(zFilename,"wb");
  if( out==0 ){
    fprintf(stderr, "cannot open \"%s\" for writing\n", zFilename);
    exit(1);
  }
  fwrite("RIFF", 4, 1, out);
  write_int4(out, nData+4+20+8);
  fwrite(aWavFmt, sizeof(aWavFmt), 1, out);
  write_int4(out, nData);
  fwrite(aData, nData, 1, out);
  fclose(out);
}

int main(int argc, char **argv){
  int i = 0;
  unsigned char aBuf[800];
# define N      sizeof(aBuf)
# define pitch1 195.9977*2   /* G */
# define pitch2 233.0819*2   /* B-flat */
# define pitch3 293.6648*2   /* D */
  while( i<N/2 ){
    double v;
    v = 99.0*sin((2*M_PI*pitch3*i)/8000);
    if( i<200 ){
      v = v*i/200.0;
    }else if( i>N-200 ){
      v = v*(N-i)/200.0;
    }
    aBuf[i] = (char)(v+99.0);
    i++;
  }
  while( i<N ){
    double v;
    v = 99.0*sin((2*M_PI*pitch1*i)/8000);
    if( i<200 ){
      v = v*i/200.0;
    }else if( i>N-200 ){
      v = v*(N-i)/200.0;
    }
    aBuf[i] = (char)(v+99.0);
    i++;
  }
  write_wave("out.wav", N, aBuf);
  return 0;
}
Added src/alerts/plunk.wav.

cannot compute difference between binary files

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** This file contains code to implement the "all" command-line method.
*/
#include "config.h"
#include "allrepo.h"
#include <assert.h>

/*
** The input string is a filename.  Return a new copy of this
** filename if the filename requires quoting due to special characters
** such as spaces in the name.
**
** Build a string that contains all of the command-line options
** specified as arguments.  collect_argument() is used for stand-alone
** options and collect_argument_value() is used for options that are
** followed by an argument value.
** If the filename cannot be safely quoted, return a NULL pointer.
**
** Space to hold the returned string is obtained from malloc.  A new
** string is returned even if no quoting is needed.
*/
static void collect_argument(Blob *pExtra,const char *zArg,const char *zShort){
static char *quoteFilename(const char *zFilename){
  const char *z = find_option(zArg, zShort, 0);
  int i, c;
  int needQuote = 0;
  for(i=0; (c = zFilename[i])!=0; i++){
    if( c=='"' ) return 0;
  if( z!=0 ){
    if( isspace(c) ) needQuote = 1;
    if( c=='\\' && zFilename[i+1]==0 ) return 0;
    if( c=='$' ) return 0;
    blob_appendf(pExtra, " %s", z);
  }
}
static void collect_argument_value(
    Blob *pExtra, const char *zArg, const char *zShort
){
  const char *zValue = find_option(zArg, zShort, 1);
  if( needQuote ){
  if( zValue ){
    return mprintf("\"%s\"", zFilename);
  }else{
    return mprintf("%s", zFilename);
    if( zValue[0] ){
      blob_appendf(pExtra, " --%s %$", zArg, zValue);
    }else{
      blob_appendf(pExtra, " --%s \"\"", zArg);
    }
  }
}
static void collect_argv(Blob *pExtra, int iStart){
  int i;
  for(i=iStart; i<g.argc; i++){
    blob_appendf(pExtra, " %s", g.argv[i]);
  }
}


/*
** COMMAND: all
**
** Usage: %fossil all (list|ls|pull|push|rebuild|sync)
** Usage: %fossil all SUBCOMMAND ...
**
** The ~/.fossil file records the location of all repositories for a
** user.  This command performs certain operations on all repositories
** that can be useful before or after a period of disconnection operation.
** that can be useful before or after a period of disconnected operation.
**
** On Win32 systems, the file is named "_fossil" and is located in
** %LOCALAPPDATA%, %APPDATA% or %HOMEPATH%.
**
** Available operations are:
**
**    backup      Backup all repositories.  The argument must be the name of
**                a directory into which all backup repositories are written.
**
**    cache       Manages the cache used for potentially expensive web
**                pages.  Any additional arguments are passed on verbatim
**                to the cache command.
**
**    changes     Shows all local check-outs that have uncommitted changes.
**                This operation has no additional options.
**
**    clean       Delete all "extra" files in all local check-outs.  Extreme
**                caution should be exercised with this command because its
**                effects cannot be undone.  Use of the --dry-run option to
**                carefully review the local check-outs to be operated upon
**                and the --whatif option to carefully review the files to
**                be deleted beforehand is highly recommended.  The command
**                line options supported by the clean command itself, if any
**                are present, are passed along verbatim.
**
**    config      Only the "config pull AREA" command works.
**
**    dbstat      Run the "dbstat" command on all repositories.
**
**    extras      Shows "extra" files from all local check-outs.  The command
**                line options supported by the extra command itself, if any
**                are present, are passed along verbatim.
**
**    fts-config  Run the "fts-config" command on all repositories.
**
**    git CMD     Do the "git export" or "git status" command (whichever
**    list | ls  Display the location of all repositories
**                is specified by CMD) on all repositories for which
**                a Git mirror has been previously established.
**
**    info        Run the "info" command on all repositories.
**
**    pull       Run a "pull" operation on all repositories
**    pull        Run a "pull" operation on all repositories.  Only the
**                --verbose and --share-links options are supported.
**
**    push       Run a "push" on all repositories
**    push        Run a "push" on all repositories.  Only the --verbose
**                option is supported.
**
**    rebuild     Rebuild on all repositories.  The command line options
**                supported by the rebuild command itself, if any are
**                present, are passed along verbatim.  The --force option
**                is not supported.
**
**    remote      Show remote hosts for all repositories.
**
**    rebuild    Rebuild on all repositories
**    repack      Look for extra compression in all repositories.
**
**    sync       Run a "sync" on all repositories
**    sync        Run a "sync" on all repositories.  Only the --verbose
**                and --unversioned and --share-links options are supported.
**
**    set[tings]  Run the "settings" command on all repositories.
**                This command is useful for settings like "max-loadavg" which
**                you usually want to be the same across all repositories
**                on a server.
**
**    unset       Run the "unset" command on all repositories
**
**    server      Run the "server" commands on all repositories.
**                The root URI gives a listing of all repos.
**
**    ui          Run the "ui" command on all repositories.  Like "server"
**                but bind to the loopback TCP address only, enable
**                the --localauth option and automatically launch a
**                web-browser
**
**    whatis      Run the "whatis" command on all repositories.  Only
**                show output for repositories that have a match.
**
**
** In addition, the following maintenance operations are supported:
**
**    add         Add all the repositories named to the set of repositories
**                tracked by Fossil.  Normally Fossil is able to keep up with
**                this list by itself, but sometimes it can benefit from this
**                hint if you rename repositories.
**
**    ignore      Arguments are repositories that should be ignored by
**                subsequent clean, extras, list, pull, push, rebuild, and
**                sync operations.  The -c|--ckout option causes the listed
**                local check-outs to be ignored instead.
**
**    list | ls   Display the location of all repositories.  The -c|--ckout
**                option causes all local check-outs to be listed instead.
**
** Respositories are automatically added to the set of known repositories
** when one of the following commands against the repository: clone, info,
** pull, push, or sync
** Repositories are automatically added to the set of known repositories
** when one of the following commands are run against the repository:
** clone, info, pull, push, or sync.  Even previously ignored repositories
** are added back to the list of repositories by these commands.
**
** Options:
**   --dry-run         If given, display instead of run actions
**   --showfile        Show the repository or check-out being operated upon
**   --stop-on-error   Halt immediately if any subprocess fails
*/
void all_cmd(void){
  int n;
  Stmt q;
  const char *zCmd;
  char *zSyscmd;
  char *zFossil;
  char *zQFilename;
  int nMissing;
  
  Blob extra;
  int useCheckouts = 0;
  int quiet = 0;
  int dryRunFlag = 0;
  int showFile = find_option("showfile",0,0)!=0;
  int stopOnError;
  int nToDel = 0;
  int showLabel = 0;

  (void)find_option("dontstop",0,0);   /* Legacy.  Now the default */
  stopOnError = find_option("stop-on-error",0,0)!=0;
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( !dryRunFlag ){
    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }

  if( g.argc<3 ){
    usage("list|ls|pull|push|rebuild|sync");
    usage("SUBCOMMAND ...");
  }
  n = strlen(g.argv[2]);
  db_open_config(1);
  db_open_config(1, 0);
  blob_zero(&extra);
  zCmd = g.argv[2];
  if( !login_is_nobody() ) blob_appendf(&extra, " -U %s", g.zLogin);
  if( fossil_strcmp(zCmd, "ui")==0
      || fossil_strcmp(zCmd, "server")==0 ){
    g.argv[1] = g.argv[2];
    g.argv[2] = "/";
    cmd_webserver();
    return;
  }
  if( strncmp(zCmd, "list", n)==0 || strncmp(zCmd,"ls",n)==0 ){
  if( fossil_strcmp(zCmd, "list")==0 || fossil_strcmp(zCmd,"ls")==0 ){
    zCmd = "list";
    useCheckouts = find_option("ckout","c",0)!=0;
  }else if( fossil_strcmp(zCmd, "backup")==0 ){
    char *zDest;
    zCmd = "backup -R";
    collect_argument(&extra, "overwrite",0);
    if( g.argc!=4 ) usage("backup DIRECTORY");
    zDest = g.argv[3];
    if( file_isdir(zDest, ExtFILE)!=1 ){
      fossil_fatal("argument to \"fossil all backup\" must be a directory");
    }
    blob_appendf(&extra, " %$", zDest);
  }else if( fossil_strcmp(zCmd, "clean")==0 ){
    zCmd = "clean --chdir";
    collect_argument(&extra, "allckouts",0);
    collect_argument_value(&extra, "case-sensitive", 0);
    collect_argument_value(&extra, "clean", 0);
    collect_argument(&extra, "dirsonly",0);
    collect_argument(&extra, "disable-undo",0);
    collect_argument(&extra, "dotfiles",0);
    collect_argument(&extra, "emptydirs",0);
    collect_argument(&extra, "force","f");
    collect_argument_value(&extra, "ignore", 0);
    collect_argument_value(&extra, "keep", 0);
    collect_argument(&extra, "no-prompt",0);
    collect_argument(&extra, "temp",0);
    collect_argument(&extra, "verbose","v");
    collect_argument(&extra, "whatif",0);
    useCheckouts = 1;
  }else if( fossil_strcmp(zCmd, "config")==0 ){
    zCmd = "config -R";
    collect_argv(&extra, 3);
    (void)find_option("legacy",0,0);
    (void)find_option("overwrite",0,0);
    verify_all_options();
    if( g.argc!=5 || fossil_strcmp(g.argv[3],"pull")!=0 ){
      usage("configure pull AREA ?OPTIONS?");
    }
  }else if( fossil_strcmp(zCmd, "dbstat")==0 ){
    zCmd = "dbstat --omit-version-info -R";
    showLabel = 1;
    quiet = 1;
    collect_argument(&extra, "brief", "b");
    collect_argument(&extra, "db-check", 0);
    collect_argument(&extra, "db-verify", 0);
  }else if( fossil_strcmp(zCmd, "extras")==0 ){
    if( showFile ){
      zCmd = "extras --chdir";
    }else{
      zCmd = "extras --header --chdir";
    }
    collect_argument(&extra, "abs-paths",0);
    collect_argument_value(&extra, "case-sensitive", 0);
    collect_argument(&extra, "dotfiles",0);
    collect_argument_value(&extra, "ignore", 0);
    collect_argument(&extra, "rel-paths",0);
    useCheckouts = 1;
    stopOnError = 0;
    quiet = 1;
  }else if( fossil_strcmp(zCmd, "git")==0 ){
    if( g.argc<4 ){
      usage("git (export|status)");
    }else{
      if( fossil_strcmp(g.argv[3], "export")==0 ){
        zCmd = "git export --if-mirrored -R";
      }else if( fossil_strcmp(g.argv[3], "status")==0 ){
        zCmd = "git status --by-all -q -R";
        quiet = 1;
      }else{
        usage("git (export|status)");
      }
    }
  }else if( strncmp(zCmd, "push", n)==0 ){
  }else if( fossil_strcmp(zCmd, "push")==0 ){
    zCmd = "push -autourl -R";
    collect_argument(&extra, "verbose","v");
  }else if( strncmp(zCmd, "pull", n)==0 ){
  }else if( fossil_strcmp(zCmd, "pull")==0 ){
    zCmd = "pull -autourl -R";
    collect_argument(&extra, "verbose","v");
    collect_argument(&extra, "share-links",0);
  }else if( strncmp(zCmd, "rebuild", n)==0 ){
  }else if( fossil_strcmp(zCmd, "rebuild")==0 ){
    zCmd = "rebuild";
    collect_argument(&extra, "analyze",0);
    collect_argument(&extra, "cluster",0);
    collect_argument(&extra, "compress",0);
    collect_argument(&extra, "compress-only",0);
    collect_argument(&extra, "noverify",0);
    collect_argument_value(&extra, "pagesize", 0);
    collect_argument(&extra, "vacuum",0);
    collect_argument(&extra, "deanalyze",0); /* Deprecated */
    collect_argument(&extra, "analyze",0);
    collect_argument(&extra, "wal",0);
    collect_argument(&extra, "stats",0);
    collect_argument(&extra, "index",0);
    collect_argument(&extra, "noindex",0);
    collect_argument(&extra, "ifneeded", 0);
  }else if( fossil_strcmp(zCmd, "remote")==0 ){
    showLabel = 1;
    quiet = 1;
    collect_argument(&extra, "show-passwords", 0);
    if( g.argc==3 ){
      zCmd = "remote -R";
    }else if( g.argc!=4 ){
      usage("remote ?config-data|list|ls?");
    }else if( fossil_strcmp(g.argv[3],"ls")==0
           || fossil_strcmp(g.argv[3],"list")==0 ){
      zCmd = "remote ls -R";
    }else if( fossil_strcmp(g.argv[3],"ls")==0
           || fossil_strcmp(g.argv[3],"list")==0 ){
      zCmd = "remote ls -R";
    }else if( fossil_strcmp(g.argv[3],"config-data")==0 ){
      zCmd = "remote config-data -R";
    }else{
      usage("remote ?config-data|list|ls?");
    }
  }else if( fossil_strcmp(zCmd, "repack")==0 ){
    zCmd = "repack";
  }else if( fossil_strcmp(zCmd, "set")==0
            || fossil_strcmp(zCmd, "setting")==0
            || fossil_strcmp(zCmd, "settings")==0 ){
    zCmd = "settings -R";
    collect_argv(&extra, 3);
  }else if( fossil_strcmp(zCmd, "unset")==0 ){
    zCmd = "unset -R";
    collect_argv(&extra, 3);
  }else if( fossil_strcmp(zCmd, "fts-config")==0 ){
    zCmd = "fts-config -R";
    collect_argv(&extra, 3);
  }else if( strncmp(zCmd, "sync", n)==0 ){
  }else if( fossil_strcmp(zCmd, "sync")==0 ){
    zCmd = "sync -autourl -R";
    collect_argument(&extra, "share-links",0);
    collect_argument(&extra, "verbose","v");
    collect_argument(&extra, "unversioned","u");
    collect_argument(&extra, "all",0);
  }else if( fossil_strcmp(zCmd, "test-integrity")==0 ){
    collect_argument(&extra, "db-only", "d");
    collect_argument(&extra, "parse", 0);
    collect_argument(&extra, "quick", "q");
    zCmd = "test-integrity";
  }else if( fossil_strcmp(zCmd, "test-orphans")==0 ){
    zCmd = "test-orphans -R";
  }else if( fossil_strcmp(zCmd, "test-missing")==0 ){
    zCmd = "test-missing -q -R";
    collect_argument(&extra, "notshunned",0);
  }else if( fossil_strcmp(zCmd, "changes")==0 ){
    zCmd = "changes --quiet --header --chdir";
    useCheckouts = 1;
    stopOnError = 0;
    quiet = 1;
  }else if( fossil_strcmp(zCmd, "ignore")==0 ){
    int j;
    Blob fn = BLOB_INITIALIZER;
    Blob sql = BLOB_INITIALIZER;
    useCheckouts = find_option("ckout","c",0)!=0;
    verify_all_options();
    db_begin_transaction();
    for(j=3; j<g.argc; j++, blob_reset(&sql), blob_reset(&fn)){
      file_canonical_name(g.argv[j], &fn, useCheckouts?1:0);
      blob_append_sql(&sql,
         "DELETE FROM global_config WHERE name GLOB '%s:%q'",
         useCheckouts?"ckout":"repo", blob_str(&fn)
      );
      if( dryRunFlag ){
        fossil_print("%s\n", blob_sql_text(&sql));
      }else{
        db_unprotect(PROTECT_CONFIG);
        db_multi_exec("%s", blob_sql_text(&sql));
        db_protect_pop();
      }
    }
    db_end_transaction(0);
    blob_reset(&sql);
    blob_reset(&fn);
    blob_reset(&extra);
    return;
  }else if( fossil_strcmp(zCmd, "add")==0 ){
    int j;
    Blob fn = BLOB_INITIALIZER;
    Blob sql = BLOB_INITIALIZER;
    verify_all_options();
    db_begin_transaction();
    for(j=3; j<g.argc; j++, blob_reset(&fn), blob_reset(&sql)){
      sqlite3 *db;
      int rc;
      const char *z;
      file_canonical_name(g.argv[j], &fn, 0);
      z = blob_str(&fn);
      if( !file_isfile(z, ExtFILE) ) continue;
      g.dbIgnoreErrors++;
      rc = sqlite3_open(z, &db);
      if( rc!=SQLITE_OK ){ sqlite3_close(db); g.dbIgnoreErrors--; continue; }
      rc = sqlite3_exec(db, "SELECT rcvid FROM blob, delta LIMIT 1", 0, 0, 0);
      sqlite3_close(db);
      g.dbIgnoreErrors--;
      if( rc!=SQLITE_OK ) continue;
      blob_append_sql(&sql,
         "INSERT OR IGNORE INTO global_config(name,value)"
         "VALUES('repo:%q',1)", z
      );
      if( dryRunFlag ){
        fossil_print("%s\n", blob_sql_text(&sql));
      }else{
        db_unprotect(PROTECT_CONFIG);
        db_multi_exec("%s", blob_sql_text(&sql));
        db_protect_pop();
      }
    }
    db_end_transaction(0);
    blob_reset(&sql);
    blob_reset(&fn);
    blob_reset(&extra);
    return;
  }else if( fossil_strcmp(zCmd, "info")==0 ){
    zCmd = "info";
    showLabel = 1;
    quiet = 1;
  }else if( fossil_strcmp(zCmd, "cache")==0 ){
    zCmd = "cache -R";
    showLabel = 1;
    collect_argv(&extra, 3);
  }else if( fossil_strcmp(zCmd, "whatis")==0 ){
    zCmd = "whatis -q -R";
    quiet = 1;
    collect_argument(&extra, "file", "f");
    collect_argument_value(&extra, "type", 0);
    collect_argv(&extra, 3);
  }else{
    fossil_fatal("\"all\" subcommand should be one of: "
      "add cache changes clean dbstat extras fts-config git ignore "
                 "list ls push pull rebuild sync");
      "info list ls pull push rebuild remote "
      "server settings sync ui unset whatis");
  }
  verify_all_options();
  db_multi_exec("CREATE TEMP TABLE repolist(name,tag);");
  if( useCheckouts ){
    db_multi_exec(
       "INSERT INTO repolist "
       "SELECT DISTINCT substr(name, 7), name COLLATE nocase"
       "  FROM global_config"
  zFossil = quoteFilename(g.argv[0]);
  nMissing = 0;
  db_prepare(&q,
     "SELECT DISTINCT substr(name, 6) COLLATE nocase"
     "  FROM global_config"
     " WHERE substr(name, 1, 5)=='repo:' ORDER BY 1"
  );
       " WHERE substr(name, 1, 6)=='ckout:'"
       " ORDER BY 1"
    );
  }else{
    db_multi_exec(
       "INSERT INTO repolist "
       "SELECT DISTINCT substr(name, 6), name COLLATE nocase"
       "  FROM global_config"
       " WHERE substr(name, 1, 5)=='repo:'"
       " ORDER BY 1"
    );
  }
  db_multi_exec("CREATE TEMP TABLE toDel(x TEXT)");
  db_prepare(&q, "SELECT name, tag FROM repolist ORDER BY 1");
  while( db_step(&q)==SQLITE_ROW ){
    int rc;
    const char *zFilename = db_column_text(&q, 0);
#if !USE_SEE
    if( sqlite3_strglob("*.efossil", zFilename)==0 ) continue;
#endif
    if( access(zFilename, 0) ){
      nMissing++;
    if( file_access(zFilename, F_OK)
     || !file_is_canonical(zFilename)
     || (useCheckouts && file_isdir(zFilename, ExtFILE)!=1)
    ){
      db_multi_exec("INSERT INTO toDel VALUES(%Q)", db_column_text(&q, 1));
      nToDel++;
      continue;
    }
    if( !file_is_canonical(zFilename) ) nMissing++;
    if( zCmd[0]=='l' ){
      printf("%s\n", zFilename);
      fossil_print("%s\n", zFilename);
      continue;
    }else if( showFile ){
      fossil_print("%s: %s\n", useCheckouts ? "check-out" : "repository",
                   zFilename);
    }
    zQFilename = quoteFilename(zFilename);
    zSyscmd = mprintf("%s %s %s", zFossil, zCmd, zQFilename);
    printf("%s\n", zSyscmd);
    fflush(stdout);
    portable_system(zSyscmd);
    zSyscmd = mprintf("%$ %s %$%s",
                      g.nameOfExe, zCmd, zFilename, blob_str(&extra));
    if( showLabel ){
      int len = (int)strlen(zFilename);
      int nStar = 80 - (len + 15);
      if( nStar<2 ) nStar = 1;
      fossil_print("%.13c %s %.*c\n", '*', zFilename, nStar, '*');
      fflush(stdout);
    }
    if( !quiet || dryRunFlag ){
      fossil_print("%s\n", zSyscmd);
      fflush(stdout);
    }
    rc = dryRunFlag ? 0 : fossil_system(zSyscmd);
    free(zSyscmd);
    if( rc ){
      if( stopOnError ) break;
      /* If there is an error, pause briefly, but do not stop.  The brief
      ** pause is so that if the prior command failed with Ctrl-C then there
      ** will be time to stop the whole thing with a second Ctrl-C. */
      sqlite3_sleep(330);
    }
  }
    free(zQFilename);
  }
  
  db_finalize(&q);

  blob_reset(&extra);

  /* If any repositories whose names appear in the ~/.fossil file could not
  ** be found, remove those names from the ~/.fossil file.
  */
  if( nMissing ){
  if( nToDel>0 ){
    db_begin_transaction();
    db_reset(&q);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zFilename = db_column_text(&q, 0);
      if( access(zFilename, 0) ){
        char *zRepo = mprintf("repo:%s", zFilename);
    const char *zSql = "DELETE FROM global_config WHERE name IN toDel";
    if( dryRunFlag ){
      fossil_print("%s\n", zSql);
        db_unset(zRepo, 1);
        free(zRepo);
      }else if( !file_is_canonical(zFilename) ){
    }else{
        Blob cname;
        char *zRepo = mprintf("repo:%s", zFilename);
        db_unset(zRepo, 1);
      db_unprotect(PROTECT_CONFIG);
        free(zRepo);
        file_canonical_name(zFilename, &cname);
        zRepo = mprintf("repo:%s", blob_str(&cname));
        db_set(zRepo, "1", 1);
      db_multi_exec("%s", zSql /*safe-for-%s*/ );
      db_protect_pop();
        free(zRepo);
      }
    }
    }
  }
    db_reset(&q);
    db_end_transaction(0);
  }
  db_finalize(&q);
}
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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code for dealing with attachments.
*/
#include "config.h"
#include "attach.h"
#include <assert.h>

/*
** WEBPAGE: attachlist
** List attachments.
**
**    tkt=TICKETUUID
**    tkt=HASH
**    page=WIKIPAGE
**    technote=HASH
**
** List attachments.
** Either one of tkt= or page= are supplied or neither.  If neither
** are given, all attachments are listed.  If one is given, only
** attachments for the designated ticket or wiki page are shown.
** TICKETUUID must be complete 
** At most one of technote=, tkt= or page= may be supplied.
**
** If none are given, all attachments are listed.  If one is given, only
** attachments for the designated technote, ticket or wiki page are shown.
**
** HASH may be just a prefix of the relevant technical note or ticket
** artifact hash, in which case all attachments of all technical notes or
** tickets with the prefix will be listed.
*/
void attachlist_page(void){
  const char *zPage = P("page");
  const char *zTkt = P("tkt");
  const char *zTechNote = P("technote");
  Blob sql;
  Stmt q;

  if( zPage && zTkt ) zTkt = 0;
  login_check_credentials();
  style_set_current_feature("attach");
  blob_zero(&sql);
  blob_append(&sql,
     "SELECT datetime(mtime,'localtime'), src, target, filename, comment, user"
     "  FROM attachment",
  blob_append_sql(&sql,
     "SELECT datetime(mtime,toLocal()), src, target, filename,"
     "       comment, user,"
     "       (SELECT uuid FROM blob WHERE rid=attachid), attachid,"
     "       (CASE WHEN 'tkt-'||target IN (SELECT tagname FROM tag)"
     "                  THEN 1"
     "             WHEN 'event-'||target IN (SELECT tagname FROM tag)"
     "                  THEN 2"
     "             ELSE 0 END)"
     "  FROM attachment"
     -1
  );
  if( zPage ){
    if( g.okRdWiki==0 ) login_needed();
    if( g.perm.RdWiki==0 ){ login_needed(g.anon.RdWiki); return; }
    style_header("Attachments To %h", zPage);
    blob_appendf(&sql, " WHERE target=%Q", zPage);
    blob_append_sql(&sql, " WHERE target=%Q", zPage);
  }else if( zTkt ){
    if( g.okRdTkt==0 ) login_needed();
    style_header("Attachments To Ticket %.10s", zTkt);
    blob_appendf(&sql, " WHERE target GLOB '%q*'", zTkt);
    if( g.perm.RdTkt==0 ){ login_needed(g.anon.RdTkt); return; }
    style_header("Attachments To Ticket %S", zTkt);
    blob_append_sql(&sql, " WHERE target GLOB '%q*'", zTkt);
  }else if( zTechNote ){
    if( g.perm.RdWiki==0 ){ login_needed(g.anon.RdWiki); return; }
    style_header("Attachments to Tech Note %S", zTechNote);
    blob_append_sql(&sql, " WHERE target GLOB '%q*'",
                    zTechNote);
  }else{
    if( g.okRdTkt==0 && g.okRdWiki==0 ) login_needed();
    if( g.perm.RdTkt==0 && g.perm.RdWiki==0 ){
      login_needed(g.anon.RdTkt || g.anon.RdWiki);
      return;
    }
    style_header("All Attachments");
  }
  blob_appendf(&sql, " ORDER BY mtime DESC");
  db_prepare(&q, "%s", blob_str(&sql));
  blob_append_sql(&sql, " ORDER BY mtime DESC");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  @ <ol>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zSrc = db_column_text(&q, 1);
    const char *zTarget = db_column_text(&q, 2);
    const char *zFilename = db_column_text(&q, 3);
    const char *zComment = db_column_text(&q, 4);
    const char *zUser = db_column_text(&q, 5);
    const char *zUuid = db_column_text(&q, 6);
    int attachid = db_column_int(&q, 7);
    /* type 0 is a wiki page, 1 is a ticket, 2 is a tech note */
    int type = db_column_int(&q, 8);
    const char *zDispUser = zUser && zUser[0] ? zUser : "anonymous";
    int i;
    char *zUrlTail;
    for(i=0; zFilename[i]; i++){
      if( zFilename[i]=='/' && zFilename[i+1]!=0 ){ 
      if( zFilename[i]=='/' && zFilename[i+1]!=0 ){
        zFilename = &zFilename[i+1];
        i = -1;
      }
    }
    if( strlen(zTarget)==UUID_SIZE && validate16(zTarget,UUID_SIZE) ){
    if( type==1 ){
      zUrlTail = mprintf("tkt=%s&file=%t", zTarget, zFilename);
    }else if( type==2 ){
      zUrlTail = mprintf("technote=%s&file=%t", zTarget, zFilename);
    }else{
      zUrlTail = mprintf("page=%t&file=%t", zTarget, zFilename);
    }
    @
    @ <p><a href="/attachview?%s(zUrlTail)">%h(zFilename)</a>
    @ [<a href="/attachdownload/%t(zFilename)?%s(zUrlTail)">download</a>]<br>
    if( zComment ) while( isspace(zComment[0]) ) zComment++;
    @ <li><p>
    @ Attachment %z(href("%R/ainfo/%!S",zUuid))%S(zUuid)</a>
    moderation_pending_www(attachid);
    @ <br><a href="%R/attachview?%s(zUrlTail)">%h(zFilename)</a>
    @ [<a href="%R/attachdownload/%t(zFilename)?%s(zUrlTail)">download</a>]<br>
    if( zComment ) while( fossil_isspace(zComment[0]) ) zComment++;
    if( zComment && zComment[0] ){
      @ %w(zComment)<br>
      @ %!W(zComment)<br>
    }
    if( zPage==0 && zTkt==0 ){
    if( zPage==0 && zTkt==0 && zTechNote==0 ){
      if( zSrc==0 || zSrc[0]==0 ){
        zSrc = "Deleted from";
      }else {
        zSrc = "Added to";
      }
      if( strlen(zTarget)==UUID_SIZE && validate16(zTarget, UUID_SIZE) ){
        char zShort[20];
        memcpy(zShort, zTarget, 10);
        zShort[10] = 0;
        @ %s(zSrc) ticket <a href="%s(g.zTop)/tktview?name=%s(zTarget)">
        @ %s(zShort)</a>
      if( type==1 ){
        @ %s(zSrc) ticket <a href="%R/tktview?name=%s(zTarget)">
        @ %S(zTarget)</a>
      }else if( type==2 ){
        @ %s(zSrc) tech note <a href="%R/technote/%s(zTarget)">
        @ %S(zTarget)</a>
      }else{
        @ %s(zSrc) wiki page <a href="%s(g.zTop)/wiki?name=%t(zTarget)">
        @ %s(zSrc) wiki page <a href="%R/wiki?name=%t(zTarget)">
        @ %h(zTarget)</a>
      }
    }else{
      if( zSrc==0 || zSrc[0]==0 ){
        @ Deleted
      }else {
        @ Added
      }
    }
    @ by %h(zUser) on
    @ by %h(zDispUser) on
    hyperlink_to_date(zDate, ".");
    free(zUrlTail);
  }
  db_finalize(&q);
  @ </ol>
  style_footer();
  style_finish_page();
  return;
}

/*
** WEBPAGE: attachdownload
** WEBPAGE: attachimage
** WEBPAGE: attachview
**
** Download or display an attachment.
**
** Query parameters:
**
**    tkt=TICKETUUID
**    tkt=HASH
**    page=WIKIPAGE
**    technote=HASH
**    file=FILENAME
**    attachid=ID
**
** List attachments.
*/
void attachview_page(void){
  const char *zPage = P("page");
  const char *zTkt = P("tkt");
  const char *zTechNote = P("technote");
  const char *zFile = P("file");
  const char *zTarget = 0;
  int attachid = atoi(PD("attachid","0"));
  char *zUUID;

  if( zPage && zTkt ) zTkt = 0;
  if( zFile==0 ) fossil_redirect_home();
  login_check_credentials();
  style_set_current_feature("attach");
  if( zPage ){
    if( g.okRdWiki==0 ) login_needed();
    if( g.perm.RdWiki==0 ){ login_needed(g.anon.RdWiki); return; }
    zTarget = zPage;
  }else if( zTkt ){
    if( g.okRdTkt==0 ) login_needed();
    if( g.perm.RdTkt==0 ){ login_needed(g.anon.RdTkt); return; }
    zTarget = zTkt;
  }else if( zTechNote ){
    if( g.perm.RdWiki==0 ){ login_needed(g.anon.RdWiki); return; }
    zTarget = zTechNote;
  }else{
    fossil_redirect_home();
  }
  if( attachid>0 ){
    zUUID = db_text(0,
       "SELECT coalesce(src,'x') FROM attachment"
       " WHERE target=%Q AND attachid=%d",
       zTarget, attachid
    );
  }else{
    zUUID = db_text(0,
       "SELECT coalesce(src,'x') FROM attachment"
       " WHERE target=%Q AND filename=%Q"
       " ORDER BY mtime DESC LIMIT 1",
       zTarget, zFile
    );
  }
  if( zUUID==0 || zUUID[0]==0 ){
    style_header("No Such Attachment");
    @ No such attachment....
    style_footer();
    style_finish_page();
    return;
  }else if( zUUID[0]=='x' ){
    style_header("Missing");
    @ Attachment has been deleted
    style_footer();
    style_finish_page();
    return;
  }
  g.okRead = 1;
  cgi_replace_parameter("name",zUUID);
  if( strcmp(g.zPath,"attachview")==0 ){
    artifact_page();
  }else{
    cgi_replace_parameter("m", mimetype_from_name(zFile));
    rawartifact_page();
  }
  }else{
    g.perm.Read = 1;
    cgi_replace_parameter("name",zUUID);
    if( fossil_strcmp(g.zPath,"attachview")==0 ){
      artifact_page();
    }else{
      cgi_replace_parameter("m", mimetype_from_name(zFile));
      rawartifact_page();
    }
  }
}

/*
** Save an attachment control artifact into the repository
*/
static void attach_put(
  Blob *pAttach,     /* Text of the Attachment record */
  int attachRid,     /* RID for the file that is being attached */
  int needMod        /* True if the attachment is subject to moderation */
){
  int rid;
  if( needMod ){
    rid = content_put_ex(pAttach, 0, 0, 0, 1);
    moderation_table_create();
    db_multi_exec(
      "INSERT INTO modreq(objid,attachRid) VALUES(%d,%d);",
      rid, attachRid
    );
  }else{
    rid = content_put(pAttach);
    db_add_unsent(rid);
    db_multi_exec("INSERT OR IGNORE INTO unclustered VALUES(%d);", rid);
  }
  manifest_crosslink(rid, pAttach, MC_NONE);
}


/*
** WEBPAGE: attachadd
**
**    tkt=TICKETUUID
**    page=WIKIPAGE
**    from=URL
**
** Add a new attachment.
** Commit a new attachment into the repository
*/
void attachadd_page(void){
void attach_commit(
  const char *zPage = P("page");
  const char *zTkt = P("tkt");
  const char *zFrom = P("from");
  const char *aContent = P("f");
  const char *zName = PD("f:filename","unknown");
  const char *zTarget;
  const char *zTargetType;
  int szContent = atoi(PD("f:bytes","0"));

  const char *zName,                   /* The filename of the attachment */
  const char *zTarget,                 /* The artifact hash to attach to */
  const char *aContent,                /* The content of the attachment */
  int         szContent,               /* The length of the attachment */
  int         needModerator,           /* Moderate the attachment? */
  if( P("cancel") ) cgi_redirect(zFrom);
  if( zPage && zTkt ) fossil_redirect_home();
  if( zPage==0 && zTkt==0 ) fossil_redirect_home();
  login_check_credentials();
  if( zPage ){
  const char *zComment                 /* The comment for the attachment */
){
    if( g.okApndWiki==0 || g.okAttach==0 ) login_needed();
    if( !db_exists("SELECT 1 FROM tag WHERE tagname='wiki-%q'", zPage) ){
      fossil_redirect_home();
    }
    zTarget = zPage;
    zTargetType = mprintf("Wiki Page <a href=\"%s/wiki?name=%h\">%h</a>",
                           g.zTop, zPage, zPage);
  }else{
    if( g.okApndTkt==0 || g.okAttach==0 ) login_needed();
    if( !db_exists("SELECT 1 FROM tag WHERE tagname='tkt-%q'", zTkt) ){
      fossil_redirect_home();
    }
    zTarget = zTkt;
    zTargetType = mprintf("Ticket <a href=\"%s/tktview?name=%.10s\">%.10s</a>",
                          g.zTop, zTkt, zTkt);
  }
  if( zFrom==0 ) zFrom = mprintf("%s/home", g.zTop);
  if( P("cancel") ){
    cgi_redirect(zFrom);
  }
  if( P("ok") && szContent>0 ){
    Blob content;
    Blob manifest;
    Blob cksum;
    char *zUUID;
    const char *zComment;
    char *zDate;
    int rid;
    int i, n;
    int addCompress = 0;
    Manifest *pManifest;

    db_begin_transaction();
    blob_init(&content, aContent, szContent);
    rid = content_put(&content, 0, 0);
    pManifest = manifest_parse(&content, 0, 0);
    manifest_destroy(pManifest);
    blob_init(&content, aContent, szContent);
    if( pManifest ){
      blob_compress(&content, &content);
      addCompress = 1;
    }
    rid = content_put_ex(&content, 0, 0, 0, needModerator);
    zUUID = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    blob_zero(&manifest);
    for(i=n=0; zName[i]; i++){
      if( zName[i]=='/' || zName[i]=='\\' ) n = i;
      if( zName[i]=='/' || zName[i]=='\\' ) n = i+1;
    }
    zName += n;
    if( zName[0]==0 ) zName = "unknown";
    blob_appendf(&manifest, "A %F %F %s\n", zName, zTarget, zUUID);
    zComment = PD("comment", "");
    while( isspace(zComment[0]) ) zComment++;
    blob_appendf(&manifest, "A %F%s %F %s\n",
                 zName, addCompress ? ".gz" : "", zTarget, zUUID);
    while( fossil_isspace(zComment[0]) ) zComment++;
    n = strlen(zComment);
    while( n>0 && isspace(zComment[n-1]) ){ n--; }
    while( n>0 && fossil_isspace(zComment[n-1]) ){ n--; }
    if( n>0 ){
      blob_appendf(&manifest, "C %F\n", zComment);
      blob_appendf(&manifest, "C %#F\n", n, zComment);
    }
    zDate = db_text(0, "SELECT datetime('now')");
    zDate = date_in_standard_format("now");
    zDate[10] = 'T';
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");
    blob_appendf(&manifest, "U %F\n", login_name());
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest, 0, 0);
    manifest_crosslink(rid, &manifest);
    attach_put(&manifest, rid, needModerator);
    assert( blob_is_reset(&manifest) );
    db_end_transaction(0);
}

/*
** WEBPAGE: attachadd
** Add a new attachment.
**
**    tkt=HASH
**    page=WIKIPAGE
**    technote=HASH
**    from=URL
**
*/
void attachadd_page(void){
  const char *zPage = P("page");
  const char *zTkt = P("tkt");
  const char *zTechNote = P("technote");
  const char *zFrom = P("from");
  const char *aContent = P("f");
  const char *zName = PD("f:filename","unknown");
  const char *zTarget;
  char *zTargetType;
  int szContent = atoi(PD("f:bytes","0"));
  int goodCaptcha = 1;

  if( P("cancel") ) cgi_redirect(zFrom);
  if( (zPage && zTkt)
   || (zPage && zTechNote)
   || (zTkt && zTechNote)
  ){
   fossil_redirect_home();
  }
  if( zPage==0 && zTkt==0 && zTechNote==0) fossil_redirect_home();
  login_check_credentials();
  if( zPage ){
    if( g.perm.ApndWiki==0 || g.perm.Attach==0 ){
      login_needed(g.anon.ApndWiki && g.anon.Attach);
      return;
    }
    if( !db_exists("SELECT 1 FROM tag WHERE tagname='wiki-%q'", zPage) ){
      fossil_redirect_home();
    }
    zTarget = zPage;
    zTargetType = mprintf("Wiki Page <a href=\"%R/wiki?name=%h\">%h</a>",
                           zPage, zPage);
  }else if ( zTechNote ){
    if( g.perm.Write==0 || g.perm.ApndWiki==0 || g.perm.Attach==0 ){
      login_needed(g.anon.Write && g.anon.ApndWiki && g.anon.Attach);
      return;
    }
    if( !db_exists("SELECT 1 FROM tag WHERE tagname='event-%q'", zTechNote) ){
      zTechNote = db_text(0, "SELECT substr(tagname,7) FROM tag"
                             " WHERE tagname GLOB 'event-%q*'", zTechNote);
      if( zTechNote==0) fossil_redirect_home();
    }
    zTarget = zTechNote;
    zTargetType = mprintf("Tech Note <a href=\"%R/technote/%s\">%S</a>",
                           zTechNote, zTechNote);

  }else{
    if( g.perm.ApndTkt==0 || g.perm.Attach==0 ){
      login_needed(g.anon.ApndTkt && g.anon.Attach);
      return;
    }
    if( !db_exists("SELECT 1 FROM tag WHERE tagname='tkt-%q'", zTkt) ){
      zTkt = db_text(0, "SELECT substr(tagname,5) FROM tag"
                        " WHERE tagname GLOB 'tkt-%q*'", zTkt);
      if( zTkt==0 ) fossil_redirect_home();
    }
    zTarget = zTkt;
    zTargetType = mprintf("Ticket <a href=\"%R/tktview/%s\">%S</a>",
                          zTkt, zTkt);
  }
  if( zFrom==0 ) zFrom = mprintf("%R/home");
  if( P("cancel") ){
    cgi_redirect(zFrom);
  }
  if( P("ok") && szContent>0 && (goodCaptcha = captcha_is_correct(0)) ){
    int needModerator = (zTkt!=0 && ticket_need_moderation(0)) ||
                        (zPage!=0 && wiki_need_moderation(0));
    const char *zComment = PD("comment", "");
    attach_commit(zName, zTarget, aContent, szContent, needModerator, zComment);
    cgi_redirect(zFrom);
  }
  style_set_current_feature("attach");
  style_header("Add Attachment");
  if( !goodCaptcha ){
    @ <p class="generalError">Error: Incorrect security code.</p>
  }
  @ <h2>Add Attachment To %s(zTargetType)</h2>
  @ <form action="%s(g.zBaseURL)/attachadd" method="POST"
  @  enctype="multipart/form-data">
  form_begin("enctype='multipart/form-data'", "%R/attachadd");
  @ <div>
  @ File to Attach:
  @ <input type="file" name="f" size="60"><br>
  @ Description:<br>
  @ <textarea name="comment" cols=80 rows=5 wrap="virtual"></textarea><br>
  @ <textarea name="comment" cols="80" rows="5" wrap="virtual"></textarea><br>
  if( zTkt ){
    @ <input type="hidden" name="tkt" value="%h(zTkt)">
  }else if( zTechNote ){
    @ <input type="hidden" name="technote" value="%h(zTechNote)">
  }else{
    @ <input type="hidden" name="page" value="%h(zPage)">
  }
  @ <input type="hidden" name="from" value="%h(zFrom)">
  @ <input type="submit" name="ok" value="Add Attachment">
  @ <input type="submit" name="cancel" value="Cancel">
  @ </div>
  captcha_generate(0);
  @ </form>
  style_footer();
  style_finish_page();
  fossil_free(zTargetType);
}


/*
** WEBPAGE: attachdelete
**
** WEBPAGE: ainfo
** URL: /ainfo?name=ARTIFACTID
**    tkt=TICKETUUID
**    page=WIKIPAGE
**    file=FILENAME
**
** "Delete" an attachment.  Because objects in Fossil are immutable
** Show the details of an attachment artifact.
** the attachment isn't really deleted.  Instead, we change the content
** of the attachment to NULL, which the system understands as being
** deleted.  Historical values of the attachment are preserved.
*/
void attachdel_page(void){
  const char *zPage = P("page");
  const char *zTkt = P("tkt");
  const char *zFile = P("file");
  const char *zFrom = P("from");
  const char *zTarget;
void ainfo_page(void){
  int rid;                       /* RID for the control artifact */
  int ridSrc;                    /* RID for the attached file */
  char *zDate;                   /* Date attached */
  const char *zUuid;             /* Hash of the control artifact */
  Manifest *pAttach;             /* Parse of the control artifact */
  const char *zTarget;           /* Wiki, ticket or tech note attached to */
  const char *zSrc;              /* Hash of the attached file */
  const char *zName;             /* Name of the attached file */
  const char *zDesc;             /* Description of the attached file */
  const char *zWikiName = 0;     /* Wiki page name when attached to Wiki */
  const char *zTNUuid = 0;       /* Tech Note ID when attached to tech note */
  const char *zTktUuid = 0;      /* Ticket ID when attached to a ticket */
  int modPending;                /* True if awaiting moderation */
  const char *zModAction;        /* Moderation action or NULL */
  int isModerator;               /* TRUE if user is the moderator */
  const char *zMime;             /* MIME Type */
  Blob attach;                   /* Content of the attachment */
  int fShowContent = 0;
  const char *zLn = P("ln");

  if( zPage && zTkt ) fossil_redirect_home();
  if( zPage==0 && zTkt==0 ) fossil_redirect_home();
  if( zFile==0 ) fossil_redirect_home();
  login_check_credentials();
  if( zPage ){
    if( g.okWrWiki==0 || g.okAttach==0 ) login_needed();
    zTarget = zPage;
  if( !g.perm.RdTkt && !g.perm.RdWiki ){
    login_needed(g.anon.RdTkt || g.anon.RdWiki);
    return;
  }
  rid = name_to_rid_www("name");
  if( rid==0 ){ fossil_redirect_home(); }
  zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
  pAttach = manifest_get(rid, CFTYPE_ATTACHMENT, 0);
  if( pAttach==0 ) fossil_redirect_home();
  zTarget = pAttach->zAttachTarget;
  }else{
    if( g.okWrTkt==0 || g.okAttach==0 ) login_needed();
    zTarget = zTkt;
  }
  if( zFrom==0 ) zFrom = mprintf("%s/home", g.zTop);
  if( P("cancel") ){
  zSrc = pAttach->zAttachSrc;
  ridSrc = db_int(0,"SELECT rid FROM blob WHERE uuid='%q'", zSrc);
  zName = pAttach->zAttachName;
  zDesc = pAttach->zComment;
  zMime = mimetype_from_name(zName);
  fShowContent = zMime ? strncmp(zMime,"text/", 5)==0 : 0;
  if( validate16(zTarget, strlen(zTarget))
   && db_exists("SELECT 1 FROM ticket WHERE tkt_uuid='%q'", zTarget)
  ){
    zTktUuid = zTarget;
    if( !g.perm.RdTkt ){ login_needed(g.anon.RdTkt); return; }
    if( g.perm.WrTkt ){
      style_submenu_element("Delete", "%R/ainfo/%s?del", zUuid);
    }
  }else if( db_exists("SELECT 1 FROM tag WHERE tagname='wiki-%q'",zTarget) ){
    zWikiName = zTarget;
    if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
    if( g.perm.WrWiki ){
      style_submenu_element("Delete", "%R/ainfo/%s?del", zUuid);
    }
  }else if( db_exists("SELECT 1 FROM tag WHERE tagname='event-%q'",zTarget) ){
    zTNUuid = zTarget;
    if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
    if( g.perm.Write && g.perm.WrWiki ){
    cgi_redirect(zFrom);
  }
  if( P("confirm") ){
      style_submenu_element("Delete", "%R/ainfo/%s?del", zUuid);
    }
  }
  zDate = db_text(0, "SELECT datetime(%.12f)", pAttach->rDate);

  if( P("confirm")
   && ((zTktUuid && g.perm.WrTkt) ||
       (zWikiName && g.perm.WrWiki) ||
       (zTNUuid && g.perm.Write && g.perm.WrWiki))
  ){
    int i, n, rid;
    char *zDate;
    Blob manifest;
    Blob cksum;
    const char *zFile = zName;

    db_begin_transaction();
    blob_zero(&manifest);
    for(i=n=0; zFile[i]; i++){
      if( zFile[i]=='/' || zFile[i]=='\\' ) n = i;
    }
    zFile += n;
    if( zFile[0]==0 ) zFile = "unknown";
    blob_appendf(&manifest, "A %F %F\n", zFile, zTarget);
    zDate = db_text(0, "SELECT datetime('now')");
    zDate = date_in_standard_format("now");
    zDate[10] = 'T';
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "U %F\n", g.zLogin ? g.zLogin : "nobody");
    blob_appendf(&manifest, "U %F\n", login_name());
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    rid = content_put(&manifest, 0, 0);
    manifest_crosslink(rid, &manifest);
    rid = content_put(&manifest);
    manifest_crosslink(rid, &manifest, MC_NONE);
    db_end_transaction(0);
    @ <p>The attachment below has been deleted.</p>
  }

  if( P("del")
   && ((zTktUuid && g.perm.WrTkt) ||
       (zWikiName && g.perm.WrWiki) ||
       (zTNUuid && g.perm.Write && g.perm.WrWiki))
  ){
    form_begin(0, "%R/ainfo/%!S", zUuid);
    @ <p>Confirm you want to delete the attachment shown below.
    @ <input type="submit" name="confirm" value="Confirm">
    @ </form>
  }

  isModerator = g.perm.Admin ||
                (zTktUuid && g.perm.ModTkt) ||
                (zWikiName && g.perm.ModWiki);
  if( isModerator && (zModAction = P("modaction"))!=0 ){
    if( strcmp(zModAction,"delete")==0 ){
      moderation_disapprove(rid);
      if( zTktUuid ){
    cgi_redirect(zFrom);
  }    
  style_header("Delete Attachment");
  @ <form action="%s(g.zBaseURL)/attachdelete" method="POST">
  @ <p>Confirm that you want to delete the attachment named
  @ "%h(zFile)" on %s(zTkt?"ticket":"wiki page") %h(zTarget):<br>
  if( zTkt ){
    @ <input type="hidden" name="tkt" value="%h(zTkt)">
        cgi_redirectf("%R/tktview/%!S", zTktUuid);
      }else{
        cgi_redirectf("%R/wiki?name=%t", zWikiName);
      }
      return;
    }
    if( strcmp(zModAction,"approve")==0 ){
      moderation_approve('a', rid);
    }
  }
  style_set_current_feature("attach");
  style_header("Attachment Details");
  style_submenu_element("Raw", "%R/artifact/%s", zUuid);
  if(fShowContent){
    style_submenu_element("Line Numbers", "%R/ainfo/%s%s", zUuid,
                          ((zLn&&*zLn) ? "" : "?ln=0"));
  }

  @ <div class="section">Overview</div>
  @ <p><table class="label-value">
  @ <tr><th>Artifact&nbsp;ID:</th>
  @ <td>%z(href("%R/artifact/%!S",zUuid))%s(zUuid)</a>
  if( g.perm.Setup ){
    @ (%d(rid))
  }
  modPending = moderation_pending_www(rid);
  if( zTktUuid ){
    @ <tr><th>Ticket:</th>
    @ <td>%z(href("%R/tktview/%s",zTktUuid))%s(zTktUuid)</a></td></tr>
  }
  if( zTNUuid ){
    @ <tr><th>Tech Note:</th>
    @ <td>%z(href("%R/technote/%s",zTNUuid))%s(zTNUuid)</a></td></tr>
  }
  if( zWikiName ){
    @ <tr><th>Wiki&nbsp;Page:</th>
    @ <td>%z(href("%R/wiki?name=%t",zWikiName))%h(zWikiName)</a></td></tr>
  }
  @ <tr><th>Date:</th><td>
  hyperlink_to_date(zDate, "</td></tr>");
  @ <tr><th>User:</th><td>
  hyperlink_to_user(pAttach->zUser, zDate, "</td></tr>");
  @ <tr><th>Artifact&nbsp;Attached:</th>
  @ <td>%z(href("%R/artifact/%s",zSrc))%s(zSrc)</a>
  if( g.perm.Setup ){
    @ (%d(ridSrc))
  }
  @ <tr><th>Filename:</th><td>%h(zName)</td></tr>
  if( g.perm.Setup ){
    @ <tr><th>MIME-Type:</th><td>%h(zMime)</td></tr>
  }
  @ <tr><th valign="top">Description:</th><td valign="top">%h(zDesc)</td></tr>
  @ </table>

  if( isModerator && modPending ){
    @ <div class="section">Moderation</div>
    @ <blockquote>
    form_begin(0, "%R/ainfo/%s", zUuid);
    @ <label><input type="radio" name="modaction" value="delete">
    @ Delete this change</label><br>
    @ <label><input type="radio" name="modaction" value="approve">
    @ Approve this change</label><br>
    @ <input type="submit" value="Submit">
    @ </form>
    @ </blockquote>
  }

  @ <div class="section">Content Appended</div>
  @ <blockquote>
  blob_zero(&attach);
  if( fShowContent ){
    const char *z;
    content_get(ridSrc, &attach);
    blob_to_utf8_no_bom(&attach, 0);
    z = blob_str(&attach);
    if( zLn ){
      output_text_with_line_numbers(z, blob_size(&attach), zName, zLn, 1);
    }else{
      @ <pre>
      @ %h(z)
      @ </pre>
    }
  }else if( strncmp(zMime, "image/", 6)==0 ){
    int sz = db_int(0, "SELECT size FROM blob WHERE rid=%d", ridSrc);
    @ <i>(file is %d(sz) bytes of image data)</i><br>
    @ <img src="%R/raw/%s(zSrc)?m=%s(zMime)"></img>
    style_submenu_element("Image", "%R/raw/%s?m=%s", zSrc, zMime);
  }else{
    int sz = db_int(0, "SELECT size FROM blob WHERE rid=%d", ridSrc);
    @ <i>(file is %d(sz) bytes of binary data)</i>
  }
  @ </blockquote>
  manifest_destroy(pAttach);
  blob_reset(&attach);
  style_finish_page();
}

/*
** Output HTML to show a list of attachments.
*/
void attachment_list(
  const char *zTarget,   /* Object that things are attached to */
  const char *zHeader    /* Header to display with attachments */
){
  int cnt = 0;
  Stmt q;
  db_prepare(&q,
     "SELECT datetime(mtime,toLocal()), filename, user,"
     "       (SELECT uuid FROM blob WHERE rid=attachid), src"
     "  FROM attachment"
     " WHERE isLatest AND src!='' AND target=%Q"
     " ORDER BY mtime DESC",
     zTarget
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zFile = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    const char *zUuid = db_column_text(&q, 3);
    const char *zSrc = db_column_text(&q, 4);
    const char *zDispUser = zUser && zUser[0] ? zUser : "anonymous";
    if( cnt==0 ){
      @ %s(zHeader)
    }
    cnt++;
    @ <li>
    @ %z(href("%R/artifact/%!S",zSrc))%h(zFile)</a>
    @ [<a href="%R/attachdownload/%t(zFile)?page=%t(zTarget)&file=%t(zFile)">download</a>]
    @ added by %h(zDispUser) on
    hyperlink_to_date(zDate, ".");
    @ [%z(href("%R/ainfo/%!S",zUuid))details</a>]
    @ </li>
  }
  if( cnt ){
    @ </ul>
  }
  db_finalize(&q);

}

/*
** COMMAND: attachment*
**
** Usage: %fossil attachment add ?PAGENAME? FILENAME ?OPTIONS?
**
** Add an attachment to an existing wiki page or tech note.
**
** Options:
**    -t|--technote DATETIME      Specifies the timestamp of
**                                the technote to which the attachment
**                                is to be made. The attachment will be
**                                to the most recently modified tech note
**                                with the specified timestamp.
**    -t|--technote TECHNOTE-ID   Specifies the technote to be
**                                updated by its technote id
**
** One of PAGENAME, DATETIME or TECHNOTE-ID must be specified.
**
** DATETIME may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
** year-month-day form, it may be truncated, the "T" may be replaced by
** a space, and it may also name a timezone offset from UTC as "-HH:MM"
** (westward) or "+HH:MM" (eastward). Either no timezone suffix or "Z"
** means UTC.
*/
void attachment_cmd(void){
  int n;
  db_find_and_open_repository(0, 0);
  if( g.argc<3 ){
    goto attachment_cmd_usage;
  }
  n = strlen(g.argv[2]);
  if( n==0 ){
    goto attachment_cmd_usage;
  }

  if( strncmp(g.argv[2],"add",n)==0 ){
    const char *zPageName = 0;    /* Name of the wiki page to attach to */
    const char *zFile;            /* Name of the file to be attached */
    const char *zETime;           /* The name of the technote to attach to */
    Manifest *pWiki = 0;          /* Parsed wiki page content */
    char *zBody = 0;              /* Wiki page content */
    int rid;
    const char *zTarget;          /* Target of the attachment */
    Blob content;                 /* The content of the attachment */
    zETime = find_option("technote","t",1);
    if( !zETime ){
      if( g.argc!=5 ){
        usage("add PAGENAME FILENAME");
      }
      zPageName = g.argv[3];
      rid = db_int(0, "SELECT x.rid FROM tag t, tagxref x"
        " WHERE x.tagid=t.tagid AND t.tagname='wiki-%q'"
        " ORDER BY x.mtime DESC LIMIT 1",
        zPageName
      );
      if( (pWiki = manifest_get(rid, CFTYPE_WIKI, 0))!=0 ){
        zBody = pWiki->zWiki;
      }
      if( zBody==0 ){
        fossil_fatal("wiki page [%s] not found",zPageName);
      }
      zTarget = zPageName;
      zFile = g.argv[4];
    }else{
      if( g.argc!=4 ){
        usage("add FILENAME --technote DATETIME|TECHNOTE-ID");
      }
      rid = wiki_technote_to_rid(zETime);
      if( rid<0 ){
        fossil_fatal("ambiguous tech note id: %s", zETime);
      }
      if( (pWiki = manifest_get(rid, CFTYPE_EVENT, 0))!=0 ){
        zBody = pWiki->zWiki;
      }
      if( zBody==0 ){
        fossil_fatal("technote [%s] not found",zETime);
      }
      zTarget = db_text(0,
        "SELECT substr(tagname,7) FROM tag "
        "  WHERE tagid=(SELECT tagid FROM event WHERE objid='%d')",
        rid
      );
      zFile = g.argv[3];
    }
    blob_read_from_file(&content, zFile, ExtFILE);
    user_select();
    attach_commit(
      zFile,                   /* The filename of the attachment */
      zTarget,                 /* The artifact hash to attach to */
      blob_buffer(&content),   /* The content of the attachment */
      blob_size(&content),     /* The length of the attachment */
      0,                       /* No need to moderate the attachment */
      ""                       /* Empty attachment comment */
    );
    if( !zETime ){
      fossil_print("Attached %s to wiki page %s.\n", zFile, zPageName);
    }else{
      fossil_print("Attached %s to tech note %s.\n", zFile, zETime);
    }
  }else{
    @ <input type="hidden" name="page" value="%h(zPage)">
    goto attachment_cmd_usage;
  }
  return;
  @ <input type="hidden" name="file" value="%h(zFile)">
  @ <input type="hidden" name="from" value="%h(zFrom)">
  @ <input type="submit" name="confirm" value="Delete">
  @ <input type="submit" name="cancel" value="Cancel">
  @ </form>
  style_footer();

}

attachment_cmd_usage:
  usage("add ?PAGENAME? FILENAME [-t|--technote DATETIME ]");
}


/*
** COMMAND: test-list-attachments
**
** Usage: %fossil test-list-attachments ?-latest? ?TargetName(s)...?
**
** List attachments for one or more attachment targets. The target
** name arguments are glob prefixes for the attachment.target
** field. If no names are provided then a prefix of [a-zA-Z] is used,
** which will match most wiki page names and some ticket hashes.
**
** Options:
**    -latest    List only the latest version of a given attachment
**
*/
void test_list_attachments(void){
  Stmt q;
  int i;
  const int fLatest = find_option("latest", 0, 0) != 0;

  db_find_and_open_repository(0, 0);
  verify_all_options();
  db_prepare(&q,
     "SELECT datetime(mtime,toLocal()), src, target, filename,"
     "       comment, user "
     "  FROM attachment"
     "  WHERE target GLOB :tgtname ||'*'"
     "  AND (isLatest OR %d)"
     "  ORDER BY target, isLatest DESC, mtime DESC",
     !fLatest
  );
  if(g.argc<3){
    static char * argv[3] = {0,0,"[a-zA-Z]"};
    g.argc = 3;
    g.argv = argv;
  }
  for(i = 2; i < g.argc; ++i){
    const char *zPage = g.argv[i];
    db_bind_text(&q, ":tgtname", zPage);
    while(SQLITE_ROW == db_step(&q)){
      const char * zTime = db_column_text(&q, 0);
      const char * zSrc = db_column_text(&q, 1);
      const char * zTarget = db_column_text(&q, 2);
      const char * zName = db_column_text(&q, 3);
      printf("%-20s %s %.12s %s\n", zTarget, zTime, zSrc, zName);
    }
    db_reset(&q);
  }
  db_finalize(&q);
}
Added src/backlink.c.










































































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement for managing backlinks and
** the "backlink" table of the repository database.
**
** A backlink is a reference in Fossil-Wiki or Markdown to some other
** object in the repository.
*/
#include "config.h"
#include "backlink.h"
#include <assert.h>


/*
** Show a graph of all wiki, tickets, and check-ins that refer to object zUuid.
**
** If zLabel is not NULL and the graph is not empty, then output zLabel as
** a prefix to the graph.
*/
void render_backlink_graph(const char *zUuid, const char *zLabel){
  Blob sql;
  Stmt q;
  char *zGlob;
  int needEndPanel = 0;
  zGlob = mprintf("%.5s*", zUuid);
  db_multi_exec(
     "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY);\n"
     "DELETE FROM ok;\n"
     "INSERT OR IGNORE INTO ok(rid)\n"
     " SELECT CASE srctype\n"
           "  WHEN 2 THEN (SELECT rid FROM tagxref WHERE tagid=backlink.srcid\n"
                          " ORDER BY mtime DESC LIMIT 1)\n"
           "  ELSE srcid END\n"
     "   FROM backlink\n"
     "  WHERE target GLOB %Q"
     "    AND %Q GLOB (target || '*');",
     zGlob, zUuid
  );
  if( !db_exists("SELECT 1 FROM ok") ) return;
  if( zLabel ){
    cgi_printf("%s", zLabel);
    if( strstr(zLabel, "accordion")!=0 ){
      cgi_printf("<div class=\"accordion_panel\">\n");
      needEndPanel = 1;
    }
  }
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_www(), -1);
  blob_append_sql(&sql, " AND event.objid IN ok ORDER BY mtime DESC");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  www_print_timeline(&q,
      TIMELINE_DISJOINT|TIMELINE_GRAPH|TIMELINE_NOSCROLL|TIMELINE_REFS,
                     0, 0, 0, 0, 0, 0);
  db_finalize(&q);
  if( needEndPanel ){
    cgi_printf("</div>\n");
  }
}

/*
** WEBPAGE: test-backlink-timeline
**
** Show a timeline of all check-ins and other events that have entries
** in the backlink table.  This is used for testing the rendering
** of the "References" section of the /info page.
*/
void backlink_timeline_page(void){
  Blob sql;
  Stmt q;

  login_check_credentials();
  if( !g.perm.Read || !g.perm.RdTkt || !g.perm.RdWiki ){
    login_needed(g.anon.Read && g.anon.RdTkt && g.anon.RdWiki);
    return;
  }
  style_set_current_feature("test");
  style_header("Backlink Timeline (Internal Testing Use)");
  db_multi_exec(
     "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY);"
     "DELETE FROM ok;"
     "INSERT OR IGNORE INTO ok"
     " SELECT blob.rid FROM backlink, blob"
     "  WHERE blob.uuid BETWEEN backlink.target AND (backlink.target||'x')"
  );
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_www(), -1);
  blob_append_sql(&sql, " AND event.objid IN ok ORDER BY mtime DESC");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  www_print_timeline(&q, TIMELINE_DISJOINT|TIMELINE_GRAPH|TIMELINE_NOSCROLL,
                     0, 0, 0, 0, 0, 0);
  db_finalize(&q);
  style_finish_page();
}

/*
** WEBPAGE: test-backlinks
**
** Show a table of all backlinks.  Admin access only.
*/
void backlink_table_page(void){
  Stmt q;
  int n;
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(g.anon.Admin);
    return;
  }
  style_set_current_feature("test");
  style_header("Backlink Table (Internal Testing Use)");
  n = db_int(0, "SELECT count(*) FROM backlink");
  @ <p>%d(n) backlink table entries:</p>
  db_prepare(&q,
    "SELECT target, srctype, srcid, datetime(mtime),"
    "  CASE srctype"
    "  WHEN 2 THEN (SELECT substr(tagname,6) FROM tag"
    "                WHERE tagid=srcid AND tagname GLOB 'wiki-*')"
    "  ELSE null END FROM backlink"
  );
  style_table_sorter();
  @ <table border="1" cellpadding="2" cellspacing="0" \
  @  class='sortable' data-column-types='ttt' data-init-sort='0'>
  @ <thead><tr><th> Target <th> Source <th> mtime </tr></thead>
  @ <tbody>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTarget = db_column_text(&q, 0);
    int srctype = db_column_int(&q, 1);
    int srcid = db_column_int(&q, 2);
    const char *zMtime = db_column_text(&q, 3);
    @ <tr><td><a href="%R/info/%h(zTarget)">%h(zTarget)</a>
    switch( srctype ){
      case BKLNK_COMMENT: {
        @ <td><a href="%R/info?name=rid:%d(srcid)">checkin-%d(srcid)</a>
        break;
      }
      case BKLNK_TICKET: {
        @ <td><a href="%R/info?name=rid:%d(srcid)">ticket-%d(srcid)</a>
        break;
      }
      case BKLNK_WIKI: {
        const char *zName = db_column_text(&q, 4);
        @ <td><a href="%R/wiki?name=%h(zName)&p">wiki-%d(srcid)</a>
        break;
      }
      case BKLNK_EVENT: {
        @ <td><a href="%R/info?name=rid:%d(srcid)">tecknote-%d(srcid)</a>
        break;
      }
      case BKLNK_FORUM: {
        @ <td><a href="%R/info?name=rid:%d(srcid)">forum-%d(srcid)</a>
        break;
      }
      default: {
        @ <td>unknown(%d(srctype)) - %d(srcid)
        break;
      }
    }
    @ <td>%h(zMtime)</tr>
  }
  @ </tbody>
  @ </table>
  db_finalize(&q);
  style_finish_page();
}

/*
** Remove all prior backlinks for the wiki page given.  Then
** add new backlinks for the latest version of the wiki page.
*/
void backlink_wiki_refresh(const char *zWikiTitle){
  int tagid = wiki_tagid(zWikiTitle);
  int rid;
  Manifest *pWiki;
  if( tagid==0 ) return;
  rid = db_int(0, "SELECT rid FROM tagxref WHERE tagid=%d"
                  " ORDER BY mtime DESC LIMIT 1", tagid);
  if( rid==0 ) return;
  pWiki = manifest_get(rid, CFTYPE_WIKI, 0);
  if( pWiki ){
    int mimetype = parse_mimetype( pWiki->zMimetype );
    backlink_extract(pWiki->zWiki, mimetype, tagid, BKLNK_WIKI,
                     pWiki->rDate, 1);
    manifest_destroy(pWiki);
  }
}

/*
** Structure used to pass down state information through the
** markup formatters into the BACKLINK generator.
*/
#if INTERFACE
struct Backlink {
  int srcid;             /* srcid for the source document */
  int srctype;           /* One of BKLNK_*.  0=comment 1=ticket 2=wiki */
  double mtime;          /* mtime field for new BACKLINK table entries */
};
#endif


/*
** zTarget is a hyperlink target in some markup format.  If this
** target is a self-reference to some other object in the repository,
** then create an appropriate backlink.
*/
void backlink_create(Backlink *p, const char *zTarget, int nTarget){
  char zLink[HNAME_MAX+4];
  if( zTarget==0 ) return;
  if( nTarget<4 ) return;
  if( nTarget>=10 && strncmp(zTarget,"/info/",6)==0 ){
    zTarget += 6;
    nTarget -= 6;
  }
  if( nTarget>HNAME_MAX ) return;
  if( !validate16(zTarget, nTarget) ) return;
  memcpy(zLink, zTarget, nTarget);
  zLink[nTarget] = 0;
  canonical16(zLink, nTarget);
  db_multi_exec(
    "REPLACE INTO backlink(target,srctype,srcid,mtime)"
    "VALUES(%Q,%d,%d,%.17g)", zLink, p->srctype, p->srcid, p->mtime
  );
}

/*
** This routine is called by the markdown formatter for each hyperlink.
** If the hyperlink is a backlink, add it to the BACKLINK table.
*/
static int backlink_md_link(
  Blob *ob,         /* Write output text here (not used in this case) */
  Blob *target,     /* The hyperlink target */
  Blob *title,      /* Hyperlink title */
  Blob *content,    /* Content of the link */
  void *opaque
){
  Backlink *p = (Backlink*)opaque;
  char *zTarget = blob_buffer(target);
  int nTarget = blob_size(target);

  backlink_create(p, zTarget, nTarget);
  return 1;
}

/* No-op routines for the rendering callbacks that we do not need */
static void mkdn_noop_prolog(Blob *b, void *v){ return; }
static void (*mkdn_noop_epilog)(Blob*, void*) = mkdn_noop_prolog;
static void mkdn_noop_footnotes(Blob *b1, const Blob *b2, void *v){ return; }
static void mkdn_noop_blockcode(Blob *b1, Blob *b2, void *v){ return; }
static void (*mkdn_noop_blockquote)(Blob*, Blob*, void*) = mkdn_noop_blockcode;
static void (*mkdn_noop_blockhtml)(Blob*, Blob*, void*) = mkdn_noop_blockcode;
static void mkdn_noop_header(Blob *b1, Blob *b2, int i, void *v){ return; }
static void (*mkdn_noop_hrule)(Blob*, void*) = mkdn_noop_prolog;
static void (*mkdn_noop_list)(Blob*, Blob*, int, void*) = mkdn_noop_header;
static void (*mkdn_noop_listitem)(Blob*, Blob*, int, void*) = mkdn_noop_header;
static void (*mkdn_noop_paragraph)(Blob*, Blob*, void*) = mkdn_noop_blockcode;
static void mkdn_noop_table(Blob *b1, Blob *b2, Blob *b3, void *v){ return; }
static void (*mkdn_noop_table_cell)(Blob*, Blob*, int,
                                    void*) = mkdn_noop_header;
static void (*mkdn_noop_table_row)(Blob*, Blob*, int,
                                   void*) = mkdn_noop_header;
static void mkdn_noop_footnoteitm(Blob *b1, const Blob *b2, int i1, int i2,
                                  void *v){ return; }
static int mkdn_noop_autolink(Blob *b1, Blob *b2, enum mkd_autolink e,
                              void *v){ return 1; }
static int mkdn_noop_codespan(Blob *b1, Blob *b2, int i, void *v){ return 1; }
static int mkdn_noop_emphasis(Blob *b1, Blob *b2, char c, void *v){ return 1; }
static int (*mkdn_noop_dbl_emphas)(Blob*, Blob*, char,
                                   void*) = mkdn_noop_emphasis;
static int mkdn_noop_image(Blob *b1, Blob *b2, Blob *b3, Blob *b4,
                           void *v){ return 1; }
static int mkdn_noop_linebreak(Blob *b1, void *v){ return 1; }
static int mkdn_noop_r_html_tag(Blob *b1, Blob *b2, void *v){ return 1; }
static int (*mkdn_noop_tri_emphas)(Blob*, Blob*, char,
                                   void*) = mkdn_noop_emphasis;
static int mkdn_noop_footnoteref(Blob *b1, const Blob *b2, const Blob *b3,
                                 int i1, int i2, void *v){ return 1; }

/*
** Scan markdown text and add self-hyperlinks to the BACKLINK table.
*/
void markdown_extract_links(
  char *zInputText,
  Backlink *p
){
  struct mkd_renderer html_renderer = {
    /* prolog     */ mkdn_noop_prolog,
    /* epilog     */ mkdn_noop_epilog,
    /* footnotes  */ mkdn_noop_footnotes,

    /* blockcode  */ mkdn_noop_blockcode,
    /* blockquote */ mkdn_noop_blockquote,
    /* blockhtml  */ mkdn_noop_blockhtml,
    /* header     */ mkdn_noop_header,
    /* hrule      */ mkdn_noop_hrule,
    /* list       */ mkdn_noop_list,
    /* listitem   */ mkdn_noop_listitem,
    /* paragraph  */ mkdn_noop_paragraph,
    /* table      */ mkdn_noop_table,
    /* table_cell */ mkdn_noop_table_cell,
    /* table_row  */ mkdn_noop_table_row,
    /* footnoteitm*/ mkdn_noop_footnoteitm,

    /* autolink   */ mkdn_noop_autolink,
    /* codespan   */ mkdn_noop_codespan,
    /* dbl_emphas */ mkdn_noop_dbl_emphas,
    /* emphasis   */ mkdn_noop_emphasis,
    /* image      */ mkdn_noop_image,
    /* linebreak  */ mkdn_noop_linebreak,
    /* link       */ backlink_md_link,
    /* r_html_tag */ mkdn_noop_r_html_tag,
    /* tri_emphas */ mkdn_noop_tri_emphas,
    /* footnoteref*/ mkdn_noop_footnoteref,

    0,  /* entity */
    0,  /* normal_text */
    "*_", /* emphasis characters */
    0   /* client data */
  };
  Blob out, in;
  html_renderer.opaque = (void*)p;
  blob_init(&out, 0, 0);
  blob_init(&in, zInputText, -1);
  markdown(&out, &in, &html_renderer);
  blob_reset(&out);
  blob_reset(&in);
}

/*
** Transform mimetype string into an integer code.
** NOTE: In the sake of compatability empty string is parsed as MT_UNKNOWN;
**       it is yet unclear whether it can safely be changed to MT_NONE.
*/
int parse_mimetype(const char* zMimetype){
  if( zMimetype==0 ) return MT_NONE;
  if( strstr(zMimetype,"wiki")!=0 )     return MT_WIKI;
  if( strstr(zMimetype,"markdown")!=0 ) return MT_MARKDOWN;
  return MT_UNKNOWN;
}
/*
** Parse text looking for hyperlinks.  Insert references into the
** BACKLINK table.
*/
void backlink_extract(
  char *zSrc,            /* Input text from which links are extracted */
  int mimetype,          /* Mimetype of input. MT_NONE works as MT_WIKI */
  int srcid,             /* srcid for the source document */
  int srctype,           /* One of BKLNK_*.  0=comment 1=ticket 2=wiki */
  double mtime,          /* mtime field for new BACKLINK table entries */
  int replaceFlag        /* True to overwrite prior BACKLINK entries */
){
  Backlink bklnk;
  if( replaceFlag ){
    db_multi_exec("DELETE FROM backlink WHERE srctype=%d AND srcid=%d",
                  srctype, srcid);
  }
  bklnk.srcid = srcid;
  assert( ValidBklnk(srctype) );
  assert( ValidMTC(mimetype) );
  bklnk.srctype = srctype;
  bklnk.mtime = mtime;
  if( mimetype==MT_NONE || mimetype==MT_WIKI ){
    wiki_extract_links(zSrc, &bklnk, srctype==BKLNK_COMMENT ? WIKI_INLINE : 0);
  }else if( mimetype==MT_MARKDOWN ){
    markdown_extract_links(zSrc, &bklnk);
  }
}

/*
** COMMAND: test-backlinks
**
** Usage: %fossil test-backlinks SRCTYPE SRCID ?OPTIONS? INPUT-FILE
**
** Read the content of INPUT-FILE and pass it into the backlink_extract()
** routine.  But instead of adding backlinks to the backlink table,
** just print them on stdout.  SRCID and SRCTYPE are integers.
**
** Options:
**    --mtime DATETIME        Use an alternative date/time.  Defaults to the
**                            current date/time.
**    --mimetype TYPE         Use an alternative mimetype
*/
void test_backlinks_cmd(void){
  const char *zMTime = find_option("mtime",0,1);
  const char *zMimetype = find_option("mimetype",0,1);
  const int mimetype = parse_mimetype(zMimetype);
  Blob in;
  int srcid;
  int srctype;
  double mtime;

  verify_all_options();
  if( g.argc!=5 ){
    usage("SRCTYPE SRCID INPUTFILE");
  }
  srctype = atoi(g.argv[2]);
  if( srctype<0 || srctype>2 ){
    fossil_fatal("SRCTYPE should be an integer 0, 1, or 2");
  }
  srcid = atoi(g.argv[3]);
  blob_read_from_file(&in, g.argv[4], ExtFILE);
  sqlite3_open(":memory:",&g.db);
  if( zMTime==0 ) zMTime = "now";
  mtime = db_double(1721059.5,"SELECT julianday(%Q)",zMTime);
  g.fSqlPrint = 1;
  sqlite3_create_function(g.db, "print", -1, SQLITE_UTF8, 0,db_sql_print,0,0);
  db_multi_exec(
    "CREATE TEMP TABLE backlink(target,srctype,srcid,mtime);\n"
    "CREATE TRIGGER backlink_insert BEFORE INSERT ON backlink BEGIN\n"
    "  SELECT print("
    " 'target='||quote(new.target)||"
    " ' srctype='||quote(new.srctype)||"
    " ' srcid='||quote(new.srcid)||"
    " ' mtime='||datetime(new.mtime));\n"
    "  SELECT raise(ignore);\n"
    "END;"
  );
  backlink_extract(blob_str(&in),mimetype,srcid,srctype,mtime,0);
  blob_reset(&in);
}


/*
** COMMAND: test-wiki-relink
**
** Usage: %fossil test-wiki-relink  WIKI-PAGE-NAME
**
** Run the backlink_wiki_refresh() procedure on the wiki page
** named.  WIKI-PAGE-NAME can be a glob pattern or a prefix
** of the wiki page.
*/
void test_wiki_relink_cmd(void){
  Stmt q;
  db_find_and_open_repository(0, 0);
  if( g.argc!=3 ) usage("WIKI-PAGE-NAME");
  db_prepare(&q,
    "SELECT substr(tagname,6) FROM tag WHERE tagname GLOB 'wiki-%q*'",
    g.argv[2]
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPage = db_column_text(&q,0);
    fossil_print("Relinking page: %s\n", zPage);
    backlink_wiki_refresh(zPage);
  }
  db_finalize(&q);
}
Added src/backoffice.c.



















































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage a background processes that
** occur after user interaction with the repository.  Examples of
** backoffice processing includes:
**
**    *  Sending alerts and notifications
**    *  Processing the email queue
**    *  Handling post-receive hooks
**    *  Automatically syncing to peer repositories
**
** Backoffice processing is automatically started whenever there are
** changes to the repository.  The backoffice process dies off after
** a period of inactivity.
**
** Steps are taken to ensure that only a single backoffice process is
** running at a time.  Otherwise, there could be race conditions that
** cause adverse effects such as multiple alerts for the same changes.
**
** At the same time, we do not want a backoffice process to run forever.
** Backoffice processes should die off after doing whatever work they need
** to do.  In this way, we avoid having lots of idle processes in the
** process table, doing nothing on rarely accessed repositories, and
** if the Fossil binary is updated on a system, the backoffice processes
** will restart using the new binary automatically.
**
** At any point in time there should be at most two backoffice processes.
** There is a main process that is doing the actually work, and there is
** a second stand-by process that is waiting for the main process to finish
** and that will become the main process after a delay.
**
** After any successful web page reply, the backoffice_check_if_needed()
** routine is called.  That routine checks to see if both one or both of
** the backoffice processes are already running.  That routine remembers the
** status in a global variable.
**
** Later, after the repository database is closed, the
** backoffice_run_if_needed() routine is called.  If the prior call
** to backoffice_check_if_needed() indicated that backoffice processing
** might be required, the run_if_needed() attempts to kick off a backoffice
** process.
**
** All work performance by the backoffice is in the backoffice_work()
** routine.
*/
#if defined(_WIN32)
# if defined(_WIN32_WINNT)
#  undef _WIN32_WINNT
# endif
# define _WIN32_WINNT 0x501
#endif
#include "config.h"
#include "backoffice.h"
#include <time.h>
#if defined(_WIN32)
# include <windows.h>
# include <stdio.h>
# include <process.h>
# if defined(__MINGW32__)
#  include <wchar.h>
# endif
# define GETPID (int)GetCurrentProcessId
#else
# include <unistd.h>
# include <sys/types.h>
# include <signal.h>
# include <errno.h>
# include <sys/time.h>
# include <sys/resource.h>
# include <fcntl.h>
# define GETPID getpid
#endif
#include <time.h>

/*
** The BKOFCE_LEASE_TIME is the amount of time for which a single backoffice
** processing run is valid.  Each backoffice run monopolizes the lease for
** at least this amount of time.  Hopefully all backoffice processing is
** finished much faster than this - usually in less than a second.  But
** regardless of how long each invocation lasts, successive backoffice runs
** must be spaced out by at least this much time.
*/
#define BKOFCE_LEASE_TIME   60    /* Length of lease validity in seconds */

#if LOCAL_INTERFACE
/*
** An instance of the following object describes a lease on the backoffice
** processing timeslot.  This lease is used to help ensure that no more than
** one process is running backoffice at a time.
*/
struct Lease {
  sqlite3_uint64 idCurrent; /* process ID for the current lease holder */
  sqlite3_uint64 tmCurrent; /* Expiration of the current lease */
  sqlite3_uint64 idNext;    /* process ID for the next lease holder on queue */
  sqlite3_uint64 tmNext;    /* Expiration of the next lease */
};
#endif

/***************************************************************************
** Local state variables
**
** Set to prevent backoffice processing from ever entering sleep or
** otherwise taking a long time to complete.  Set this when a user-visible
** process might need to wait for backoffice to complete.
*/
static int backofficeNoDelay = 0;

/* This variable is set to the name of a database on which backoffice
** should run if backoffice process is needed.  It is set by the
** backoffice_check_if_needed() routine which must be run while the database
** file is open.  Later, after the database is closed, the
** backoffice_run_if_needed() will consult this variable to see if it
** should be a no-op.
**
** The magic string "x" in this variable means "do not run the backoffice".
*/
static char *backofficeDb = 0;

/*
** Log backoffice activity to a file named here.  If not NULL, this
** overrides the "backoffice-logfile" setting of the database.  If NULL,
** the "backoffice-logfile" setting is used instead.
*/
static const char *backofficeLogfile = 0;

/*
** Write the log message into this open file.
*/
static FILE *backofficeFILE = 0;

/*
** Write backoffice log messages on this BLOB. to this connection:
*/
static Blob *backofficeBlob = 0;

/*
** Non-zero for extra logging detail.
*/
static int backofficeLogDetail = 0;

/* End of state variables
****************************************************************************/

/*
** This function emits a diagnostic message related to the processing in
** this module.
*/
#if defined(_WIN32)
# define BKOFCE_ALWAYS_TRACE   (1)
extern void sqlite3_win32_write_debug(const char *, int);
#else
# define BKOFCE_ALWAYS_TRACE   (0)
#endif
static void backofficeTrace(const char *zFormat, ...){
  char *zMsg = 0;
  if( BKOFCE_ALWAYS_TRACE || g.fAnyTrace ){
    va_list ap;
    va_start(ap, zFormat);
    zMsg = sqlite3_vmprintf(zFormat, ap);
    va_end(ap);
#if defined(_WIN32)
    sqlite3_win32_write_debug(zMsg, -1);
#endif
  }
  if( g.fAnyTrace ) fprintf(stderr, "%s", zMsg);
  if( zMsg ) sqlite3_free(zMsg);
}

/*
** Do not allow backoffice processes to sleep waiting on a timeslot.
** They must either do their work immediately or exit.
**
** In a perfect world, this interface would not exist, as there would
** never be a problem with waiting backoffice threads.  But in some cases
** a backoffice will delay a UI thread, so we don't want them to run for
** longer than needed.
*/
void backoffice_no_delay(void){
  backofficeNoDelay = 1;
}

/*
** Sleeps for the specified number of milliseconds -OR- until interrupted
** by another thread (if supported by the underlying platform).  Non-zero
** will be returned if the sleep was interrupted.
*/
static int backofficeSleep(int milliseconds){
#if defined(_WIN32)
  assert( milliseconds>=0 );
  if( SleepEx((DWORD)milliseconds, TRUE)==WAIT_IO_COMPLETION ){
    return 1;
  }
#else
  sqlite3_sleep(milliseconds);
#endif
  return 0;
}

/*
** Parse a unsigned 64-bit integer from a string.  Return a pointer
** to the character of z[] that occurs after the integer.
*/
static const char *backofficeParseInt(const char *z, sqlite3_uint64 *pVal){
  *pVal = 0;
  if( z==0 ) return 0;
  while( fossil_isspace(z[0]) ){ z++; }
  while( fossil_isdigit(z[0]) ){
    *pVal = (*pVal)*10 + z[0] - '0';
    z++;
  }
  return z;
}

/*
** Read the "backoffice" property and parse it into a Lease object.
**
** The backoffice property should consist of four integers:
**
**    (1)  Process ID for the active backoffice process.
**    (2)  Time (seconds since 1970) for when the active backoffice
**         lease expires.
**    (3)  Process ID for the on-deck backoffice process.
**    (4)  Time when the on-deck process should expire.
**
** No other process should start active backoffice processing until
** process (1) no longer exists and the current time exceeds (2).
*/
static void backofficeReadLease(Lease *pLease){
  Stmt q;
  memset(pLease, 0, sizeof(*pLease));
  db_unprotect(PROTECT_CONFIG);
  db_prepare(&q, "SELECT value FROM repository.config"
                 " WHERE name='backoffice'");
  if( db_step(&q)==SQLITE_ROW ){
    const char *z = db_column_text(&q,0);
    z = backofficeParseInt(z, &pLease->idCurrent);
    z = backofficeParseInt(z, &pLease->tmCurrent);
    z = backofficeParseInt(z, &pLease->idNext);
    backofficeParseInt(z, &pLease->tmNext);
  }
  db_finalize(&q);
  db_protect_pop();
}

/*
** Return a string that describes how long it has been since the
** last backoffice run.  The string is obtained from fossil_malloc().
*/
char *backoffice_last_run(void){
  Lease x;
  sqlite3_uint64 tmNow;
  double rAge;
  backofficeReadLease(&x);
  tmNow = time(0);
  if( x.tmCurrent==0 ){
    return fossil_strdup("never");
  }
  if( tmNow<=(x.tmCurrent-BKOFCE_LEASE_TIME) ){
    return fossil_strdup("moments ago");
  }
  rAge = (tmNow - (x.tmCurrent-BKOFCE_LEASE_TIME))/86400.0;
  return mprintf("%z ago", human_readable_age(rAge));
}

/*
** Write a lease to the backoffice property
*/
static void backofficeWriteLease(Lease *pLease){
  db_unprotect(PROTECT_CONFIG);
  db_multi_exec(
    "REPLACE INTO repository.config(name,value,mtime)"
    " VALUES('backoffice','%lld %lld %lld %lld',now())",
    pLease->idCurrent, pLease->tmCurrent,
    pLease->idNext, pLease->tmNext);
  db_protect_pop();
}

/*
** Check to see if the specified Win32 process is still alive.  It
** should be noted that even if this function returns non-zero, the
** process may die before another operation on it can be completed.
*/
#if defined(_WIN32)
#ifndef PROCESS_QUERY_LIMITED_INFORMATION
#  define PROCESS_QUERY_LIMITED_INFORMATION  (0x1000)
#endif
static int backofficeWin32ProcessExists(DWORD dwProcessId){
  HANDLE hProcess;
  hProcess = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION,FALSE,dwProcessId);
  if( hProcess==NULL ) return 0;
  CloseHandle(hProcess);
  return 1;
}
#endif

/*
** Check to see if the process identified by pid is alive.  If
** we cannot prove that the process is dead, return true.
*/
static int backofficeProcessExists(sqlite3_uint64 pid){
#if defined(_WIN32)
  return pid>0 && backofficeWin32ProcessExists((DWORD)pid)!=0;
#else
  return pid>0 && kill((pid_t)pid, 0)==0;
#endif
}

/*
** Check to see if the process identified by pid has finished.  If
** we cannot prove that the process is still running, return true.
*/
static int backofficeProcessDone(sqlite3_uint64 pid){
#if defined(_WIN32)
  return pid<=0 || backofficeWin32ProcessExists((DWORD)pid)==0;
#else
  return pid<=0 || kill((pid_t)pid, 0)!=0;
#endif
}

/*
** Return a process id number for the current process
*/
static sqlite3_uint64 backofficeProcessId(void){
  return (sqlite3_uint64)GETPID();
}


/*
** COMMAND: test-process-id
**
** Usage: %fossil [--sleep N] PROCESS-ID ...
**
** Show the current process id, and also tell whether or not all other
** processes IDs on the command line are running or not.  If the --sleep N
** option is provide, then sleep for N seconds before exiting.
*/
void test_process_id_command(void){
  const char *zSleep = find_option("sleep",0,1);
  int i;
  verify_all_options();
  fossil_print("ProcessID for this process: %lld\n", backofficeProcessId());
  if( zSleep ) sqlite3_sleep(1000*atoi(zSleep));
  for(i=2; i<g.argc; i++){
    sqlite3_uint64 x = (sqlite3_uint64)atoi(g.argv[i]);
    fossil_print("ProcessId %lld: exists %d done %d\n",
                 x, backofficeProcessExists(x),
                    backofficeProcessDone(x));
  }
}

/*
** COMMAND: test-backoffice-lease
**
** Usage: %fossil test-backoffice-lease ?--reset?
**
** Print out information about the backoffice "lease" entry in the
** config table that controls whether or not backoffice should run.
**
** If the --reset option is given, the backoffice lease is reset.
** The use of the --reset option can be disruptive.  It can cause two
** or more backoffice processes to be run simultaneously.  Use it with
** caution.
*/
void test_backoffice_lease(void){
  sqlite3_int64 tmNow = time(0);
  Lease x;
  const char *zLease;
  db_find_and_open_repository(0,0);
  if( find_option("reset",0,0)!=0 ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "DELETE FROM repository.config WHERE name='backoffice'"
    );
    db_protect_pop();
  }
  verify_all_options();
  zLease = db_get("backoffice","");
  fossil_print("now:        %lld\n", tmNow);
  fossil_print("lease:      \"%s\"\n", zLease);
  backofficeReadLease(&x);
  fossil_print("idCurrent:  %-20lld", x.idCurrent);
  if( backofficeProcessExists(x.idCurrent) ) fossil_print(" (exists)");
  if( backofficeProcessDone(x.idCurrent) ) fossil_print(" (done)");
  fossil_print("\n");
  fossil_print("tmCurrent:  %-20lld", x.tmCurrent);
  if( x.tmCurrent>0 ){
    fossil_print(" (now%+d)\n",x.tmCurrent-tmNow);
  }else{
    fossil_print("\n");
  }
  fossil_print("idNext:     %-20lld", x.idNext);
  if( backofficeProcessExists(x.idNext) ) fossil_print(" (exists)");
  if( backofficeProcessDone(x.idNext) ) fossil_print(" (done)");
  fossil_print("\n");
  fossil_print("tmNext:     %-20lld", x.tmNext);
  if( x.tmNext>0 ){
    fossil_print(" (now%+d)\n",x.tmNext-tmNow);
  }else{
    fossil_print("\n");
  }
}

/*
** If backoffice processing is needed set the backofficeDb variable to the
** name of the database file.  If no backoffice processing is needed,
** this routine makes no changes to state.
*/
void backoffice_check_if_needed(void){
  Lease x;
  sqlite3_uint64 tmNow;

  if( backofficeDb ) return;
  if( g.zRepositoryName==0 ) return;
  if( g.db==0 ) return;
  if( !db_table_exists("repository","config") ) return;
  if( db_get_boolean("backoffice-disable",0) ) return;
  tmNow = time(0);
  backofficeReadLease(&x);
  if( x.tmNext>=tmNow && backofficeProcessExists(x.idNext) ){
    /* Another backoffice process is already queued up to run.  This
    ** process does not need to do any backoffice work. */
    return;
  }else{
    /* We need to run backup to be (at a minimum) on-deck */
    backofficeDb = fossil_strdup(g.zRepositoryName);
  }
}

/*
** Call this routine to disable backoffice
*/
void backoffice_disable(void){
  backofficeDb = "x";
}

/*
** Check for errors prior to running backoffice_thread() or backoffice_run().
*/
static void backoffice_error_check_one(int *pOnce){
  if( *pOnce ){
    fossil_panic("multiple calls to backoffice()");
  }
  *pOnce = 1;
  if( g.db==0 ){
    fossil_panic("database not open for backoffice processing");
  }
  if( db_transaction_nesting_depth()!=0 ){
    fossil_panic("transaction %s not closed prior to backoffice processing",
                 db_transaction_start_point());
  }
}

/* This is the main loop for backoffice processing.
**
** If another process is already working as the current backoffice and
** the on-deck backoffice, then this routine returns very quickly
** without doing any work.
**
** If no backoffice processes are running at all, this routine becomes
** the main backoffice.
**
** If a primary backoffice is running, but an on-deck backoffice is
** needed, this routine becomes that on-deck backoffice.
*/
static void backoffice_thread(void){
  Lease x;
  sqlite3_uint64 tmNow;
  sqlite3_uint64 idSelf;
  int lastWarning = 0;
  int warningDelay = 30;
  static int once = 0;

  if( sqlite3_db_readonly(g.db, 0) ) return;
  if( db_is_protected(PROTECT_READONLY) ) return;
  g.zPhase = "backoffice";
  backoffice_error_check_one(&once);
  idSelf = backofficeProcessId();
  while(1){
    tmNow = time(0);
    db_begin_write();
    backofficeReadLease(&x);
    if( x.tmNext>=tmNow
     && x.idNext!=idSelf
     && backofficeProcessExists(x.idNext)
    ){
      /* Another backoffice process is already queued up to run.  This
      ** process does not need to do any backoffice work and can stop
      ** immediately. */
      db_end_transaction(0);
      backofficeTrace("/***** Backoffice Processing Not Needed In %d *****/\n",
                      GETPID());
      break;
    }
    if( x.tmCurrent<tmNow && backofficeProcessDone(x.idCurrent) ){
      /* This process can start doing backoffice work immediately */
      x.idCurrent = idSelf;
      x.tmCurrent = tmNow + BKOFCE_LEASE_TIME;
      x.idNext = 0;
      x.tmNext = 0;
      backofficeWriteLease(&x);
      db_end_transaction(0);
      backofficeTrace("/***** Begin Backoffice Processing %d *****/\n",
                      GETPID());
      backoffice_work();
      break;
    }
    if( backofficeNoDelay || db_get_boolean("backoffice-nodelay",0) ){
      /* If the no-delay flag is set, exit immediately rather than queuing
      ** up.  Assume that some future request will come along and handle any
      ** necessary backoffice work. */
      db_end_transaction(0);
      backofficeTrace(
           "/***** Backoffice No-Delay Exit For %d *****/\n",
           GETPID());
      break;
    }
    /* This process needs to queue up and wait for the current lease
    ** to expire before continuing. */
    x.idNext = idSelf;
    x.tmNext = (tmNow>x.tmCurrent ? tmNow : x.tmCurrent) + BKOFCE_LEASE_TIME;
    backofficeWriteLease(&x);
    db_end_transaction(0);
    backofficeTrace("/***** Backoffice On-deck %d *****/\n",  GETPID());
    if( x.tmCurrent >= tmNow ){
      if( backofficeSleep(1000*(x.tmCurrent - tmNow + 1)) ){
        /* The sleep was interrupted by a signal from another thread. */
        backofficeTrace("/***** Backoffice Interrupt %d *****/\n", GETPID());
        db_end_transaction(0);
        break;
      }
    }else{
      if( (sqlite3_uint64)(lastWarning+warningDelay) < tmNow ){
        fossil_warning(
           "backoffice process %lld still running after %d seconds",
           x.idCurrent, (int)(BKOFCE_LEASE_TIME + tmNow - x.tmCurrent));
        lastWarning = tmNow;
        warningDelay *= 2;
      }
      if( backofficeSleep(1000) ){
        /* The sleep was interrupted by a signal from another thread. */
        backofficeTrace("/***** Backoffice Interrupt %d *****/\n", GETPID());
        db_end_transaction(0);
        break;
      }
    }
  }
  return;
}

/*
** Append to a message to the backoffice log, if the log is open.
*/
void backoffice_log(const char *zFormat, ...){
  va_list ap;
  if( backofficeBlob==0 ) return;
  blob_append_char(backofficeBlob, ' ');
  va_start(ap, zFormat);
  blob_vappendf(backofficeBlob, zFormat, ap);
  va_end(ap);
}

#if !defined(_WIN32)
/*
** Capture routine for signals while running backoffice.
*/
static void backoffice_signal_handler(int sig){
  const char *zSig = 0;
  if( sig==SIGSEGV ) zSig = "SIGSEGV";
  if( sig==SIGFPE )  zSig = "SIGFPE";
  if( sig==SIGABRT ) zSig = "SIGABRT";
  if( sig==SIGILL )  zSig = "SIGILL";
  if( zSig==0 ){
    backoffice_log("signal-%d", sig);
  }else{
    backoffice_log("%s", zSig);
  }
  fprintf(backofficeFILE, "%s\n", blob_str(backofficeBlob));
  fflush(backofficeFILE);
  exit(1);
}
#endif

#if !defined(_WIN32)
/*
** Convert a struct timeval into an integer number of microseconds
*/
static long long int tvms(struct timeval *p){
  return ((long long int)p->tv_sec)*1000000 + (long long int)p->tv_usec;
}
#endif


/*
** This routine runs to do the backoffice processing.  When adding new
** backoffice processing tasks, add them here.
*/
void backoffice_work(void){
  /* Log the backoffice run for testing purposes.  For production deployments
  ** the "backoffice-logfile" property should be unset and the following code
  ** should be a no-op. */
  const char *zLog = backofficeLogfile;
  Blob log;
  int nThis;
  int nTotal = 0;
#if !defined(_WIN32)
  struct timeval sStart, sEnd;
#endif
  if( zLog==0 ) zLog = db_get("backoffice-logfile",0);
  if( zLog && zLog[0] && (backofficeFILE = fossil_fopen(zLog,"a"))!=0 ){
    int i;
    char *zName = db_get("project-name",0);
#if !defined(_WIN32)
    gettimeofday(&sStart, 0);
    signal(SIGSEGV, backoffice_signal_handler);
    signal(SIGABRT, backoffice_signal_handler);
    signal(SIGFPE, backoffice_signal_handler);
    signal(SIGILL, backoffice_signal_handler);
#endif
    if( zName==0 ){
      zName = (char*)file_tail(g.zRepositoryName);
      if( zName==0 ) zName = "(unnamed)";
    }else{
      /* Convert all spaces in the "project-name" into dashes */
      for(i=0; zName[i]; i++){ if( zName[i]==' ' ) zName[i] = '-'; }
    }
    blob_init(&log, 0, 0);
    backofficeBlob = &log;
    blob_appendf(&log, "%s %s", db_text(0, "SELECT datetime('now')"), zName);
  }

  /* Here is where the actual work of the backoffice happens */
  nThis = alert_backoffice(0);
  if( nThis ){ backoffice_log("%d alerts", nThis); nTotal += nThis; }
  nThis = hook_backoffice();
  if( nThis ){ backoffice_log("%d hooks", nThis); nTotal += nThis; }

  /* Close the log */
  if( backofficeFILE ){
    if( nTotal || backofficeLogDetail ){
      if( nTotal==0 ) backoffice_log("no-op");
#if !defined(_WIN32)
      gettimeofday(&sEnd,0);
      backoffice_log("elapse-time %d us", tvms(&sEnd) - tvms(&sStart));
#endif
      fprintf(backofficeFILE, "%s\n", blob_str(backofficeBlob));
    }
    fclose(backofficeFILE);
  }
}

/*
** COMMAND: backoffice*
**
** Usage: %fossil backoffice [OPTIONS...] [REPOSITORIES...]
**
** Run backoffice processing on the repositories listed.  If no
** repository is specified, run it on the repository of the local check-out.
**
** This might be done by a cron job or similar to make sure backoffice
** processing happens periodically.  Or, the --poll option can be used
** to run this command as a daemon that will periodically invoke backoffice
** on a collection of repositories.
**
** If only a single repository is named and --poll is omitted, then the
** backoffice work is done in-process.  But if there are multiple repositories
** or if --poll is used, a separate sub-process is started for each poll of
** each repository.
**
** Standard options:
**
**    --debug                 Show what this command is doing
**
**    --logfile FILE          Append a log of backoffice actions onto FILE
**
**    --min N                 When polling, invoke backoffice at least
**                            once every N seconds even if the repository
**                            never changes.  0 or negative means disable
**                            this feature.  Default: 3600 (once per hour).
**
**    --poll N                Repeat backoffice calls for repositories that
**                            change in appoximately N-second intervals.
**                            N less than 1 turns polling off (the default).
**                            Recommended polling interval: 60 seconds.
**
**    --trace                 Enable debugging output on stderr
**
** Options intended for internal use only which may change or be
** discontinued in future releases:
**
**    --nodelay               Do not queue up or wait for a backoffice job
**                            to complete. If no work is available or if
**                            backoffice has run recently, return immediately.
**
**    --nolease               Always run backoffice, even if there is a lease
**                            conflict.  This option implies --nodelay.  This
**                            option is added to secondary backoffice commands
**                            that are invoked by the --poll option.
*/
void backoffice_command(void){
  int nPoll;
  int nMin;
  const char *zPoll;
  int bDebug = 0;
  int bNoLease = 0;
  unsigned int nCmd = 0;
  if( find_option("trace",0,0)!=0 ) g.fAnyTrace = 1;
  if( find_option("nodelay",0,0)!=0 ) backofficeNoDelay = 1;
  backofficeLogfile = find_option("logfile",0,1);
  zPoll = find_option("poll",0,1);
  nPoll = zPoll ? atoi(zPoll) : 0;
  zPoll = find_option("min",0,1);
  nMin = zPoll ? atoi(zPoll) : 3600;
  bDebug = find_option("debug",0,0)!=0;
  bNoLease = find_option("nolease",0,0)!=0;

  /* Silently consume the -R or --repository flag, leaving behind its
  ** argument. This is for legacy compatibility. Older versions of the
  ** backoffice command only ran on a single repository that was specified
  ** using the -R option. */
  (void)find_option("repository","R",0);

  verify_all_options();
  if( g.argc>3 || nPoll>0 ){
    /* Either there are multiple repositories named on the command-line
    ** or we are polling.  In either case, each backoffice should be run
    ** using a separate sub-process */
    int i;
    time_t iNow = 0;
    time_t ix;
    i64 *aLastRun = fossil_malloc( sizeof(i64)*g.argc );
    memset(aLastRun, 0, sizeof(i64)*g.argc );
    while( 1 /* exit via "break;" */){
      time_t iNext = time(0);
      for(i=2; i<g.argc; i++){
        Blob cmd;
        if( !file_isfile(g.argv[i], ExtFILE) ){
          continue;  /* Repo no longer exists.  Ignore it. */
        }
        if( iNow
         && iNow>file_mtime(g.argv[i], ExtFILE)
         && (nMin<=0 || aLastRun[i]+nMin>iNow)
        ){
          continue;  /* Not yet time to run this one */
        }
        blob_init(&cmd, 0, 0);
        blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
        blob_append(&cmd, " backoffice --nodelay", -1);
        if( g.fAnyTrace ){
          blob_append(&cmd, " --trace", -1);
        }
        if( bDebug ){
          blob_append(&cmd, " --debug", -1);
        }
        if( nPoll>0 ){
          blob_append(&cmd, " --nolease", -1);
        }
        if( backofficeLogfile ){
          blob_append(&cmd, " --logfile", -1);
          blob_append_escaped_arg(&cmd, backofficeLogfile, 1);
        }
        blob_append_escaped_arg(&cmd, g.argv[i], 1);
        nCmd++;
        if( bDebug ){
          fossil_print("COMMAND[%u]: %s\n", nCmd, blob_str(&cmd));
        }
        fossil_system(blob_str(&cmd));
        aLastRun[i] = iNext;
        blob_reset(&cmd);
      }
      if( nPoll<1 ) break;
      iNow = iNext;
      ix = time(0);
      if( ix < iNow+nPoll ){
        sqlite3_int64 nMS = (iNow + nPoll - ix)*1000;
        if( bDebug )fossil_print("SLEEP: %lld\n", nMS);
        sqlite3_sleep((int)nMS);
      }
    }
  }else{
    /* Not polling and only one repository named.  Backoffice is run
    ** once by this process, which then exits */
    if( g.argc==3 ){
      g.zRepositoryOption = g.argv[2];
      g.argc--;
    }
    db_find_and_open_repository(0,0);
    if( bDebug ){
      backofficeLogDetail = 1;
    }
    if( bNoLease ){
      backoffice_work();
    }else{
      backoffice_thread();
    }
  }
}

/*
** This is the main interface to backoffice from the rest of the system.
** This routine launches either backoffice_thread() directly or as a
** subprocess.
*/
void backoffice_run_if_needed(void){
  if( backofficeDb==0 ) return;
  if( strcmp(backofficeDb,"x")==0 ) return;
  if( g.db ) return;
  if( g.repositoryOpen ) return;
#if defined(_WIN32)
  {
    int i;
    intptr_t x;
    char *argv[4];
    wchar_t *ax[5];
    argv[0] = g.nameOfExe;
    argv[1] = "backoffice";
    argv[2] = "-R";
    argv[3] = backofficeDb;
    ax[4] = 0;
    for(i=0; i<=3; i++) ax[i] = fossil_utf8_to_unicode(argv[i]);
    x = _wspawnv(_P_NOWAIT, ax[0], (const wchar_t * const *)ax);
    for(i=0; i<=3; i++) fossil_unicode_free(ax[i]);
    backofficeTrace(
      "/***** Subprocess %d creates backoffice child %lu *****/\n",
      GETPID(), GetProcessId((HANDLE)x));
    if( x>=0 ) return;
  }
#else /* unix */
  {
    pid_t pid = fork();
    if( pid>0 ){
      /* This is the parent in a successful fork().  Return immediately. */
      backofficeTrace(
        "/***** Subprocess %d creates backoffice child %d *****/\n",
        GETPID(), (int)pid);
      return;
    }
    if( pid==0 ){
      /* This is the child of a successful fork().  Run backoffice. */
      int i;
      setsid();
      for(i=0; i<=2; i++){
        close(i);
        open("/dev/null", O_RDWR);
      }
      for(i=3; i<100; i++){ close(i); }
      g.fDebug = 0;
      g.httpIn = 0;
      g.httpOut = 0;
      db_open_repository(backofficeDb);
      backofficeDb = "x";
      backoffice_thread();
      db_close(1);
      backofficeTrace("/***** Backoffice Child %d exits *****/\n", GETPID());
      exit(0);
    }
    fossil_warning("backoffice process %d fork failed, errno %d", GETPID(),
                   errno);
  }
#endif
  /* Fork() failed or is unavailable.  Run backoffice in this process, but
  ** do so with the no-delay setting.
  */
  backofficeNoDelay = 1;
  db_open_repository(backofficeDb);
  backofficeDb = "x";
  backoffice_thread();
  db_close(1);
}
Changes to src/bag.c.
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+
+
+
+
+
+




















-
+






-
+










-
+








-
+







*/
struct Bag {
  int cnt;   /* Number of integers in the bag */
  int sz;    /* Number of slots in a[] */
  int used;  /* Number of used slots in a[] */
  int *a;    /* Hash table of integers that are in the bag */
};
/*
** An expression for statically initializing a Bag instance, to be
** assigned to Bag instances at their declaration point. It has
** the same effect as passing the Bag to bag_init().
*/
#define Bag_INIT {0,0,0,0}
#endif

/*
** Initialize a Bag structure
*/
void bag_init(Bag *p){
  memset(p, 0, sizeof(*p));
}

/*
** Destroy a Bag.  Delete all of its content.
*/
void bag_clear(Bag *p){
  free(p->a);
  bag_init(p);
}

/*
** The hash function
*/
#define bag_hash(i)  (i*101)
#define bag_hash(i)  (((u64)(i))*101)

/*
** Change the size of the hash table on a bag so that
** it contains N slots
**
** Completely reconstruct the hash table from scratch.  Deleted
** entries (indicated by a -1) are removed.  When finished, it 
** entries (indicated by a -1) are removed.  When finished, it
** should be the case that p->cnt==p->used.
*/
static void bag_resize(Bag *p, int newSize){
  int i;
  Bag old;
  int nDel = 0;   /* Number of deleted entries */
  int nLive = 0;  /* Number of live entries */

  old = *p;
  assert( newSize>old.cnt );
  p->a = malloc( sizeof(p->a[0])*newSize );
  p->a = fossil_malloc( sizeof(p->a[0])*newSize );
  p->sz = newSize;
  memset(p->a, 0, sizeof(p->a[0])*newSize );
  for(i=0; i<old.sz; i++){
    int e = old.a[i];
    if( e>0 ){
      unsigned h = bag_hash(e)%newSize;
      while( p->a[h] ){
        h++;
        if( h==newSize ) h = 0;
        if( (int)h==newSize ) h = 0;
      }
      p->a[h] = e;
      nLive++;
    }else if( e<0 ){
      nDel++;
    }
  }
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+







  if( p->used+1 >= p->sz/2 ){
    int n = p->sz*2;
    bag_resize(p,  n + 20 );
  }
  h = bag_hash(e)%p->sz;
  while( p->a[h]>0 && p->a[h]!=e ){
    h++;
    if( h>=p->sz ) h = 0;
    if( (int)h>=p->sz ) h = 0;
  }
  if( p->a[h]<=0 ){
    if( p->a[h]==0 ) p->used++;
    p->a[h] = e;
    p->cnt++;
    rc = 1;
  }
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-
+







  assert( e>0 );
  if( p->sz==0 ){
    return 0;
  }
  h = bag_hash(e)%p->sz;
  while( p->a[h] && p->a[h]!=e ){
    h++;
    if( h>=p->sz ) h = 0;
    if( (int)h>=p->sz ) h = 0;
  }
  return p->a[h]==e;
}

/*
** Remove element e from the bag if it exists in the bag.
** If e is not in the bag, this is a no-op.
*/
void bag_remove(Bag *p, int e){
  unsigned h;
  assert( e>0 );
  if( p->sz==0 ) return;
  h = bag_hash(e)%p->sz;
  while( p->a[h] && p->a[h]!=e ){
    h++;
    if( h>=p->sz ) h = 0;
    if( (int)h>=p->sz ) h = 0;
  }
  if( p->a[h] ){
    int nx = h+1;
    if( nx>=p->sz ) nx = 0;
    if( p->a[nx]==0 ){
      p->a[h] = 0;
      p->used--;
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+








int bag_next(Bag *p, int e){
  unsigned h;
  assert( p->sz>0 );
  assert( e>0 );
  h = bag_hash(e)%p->sz;
  while( p->a[h] && p->a[h]!=e ){
    h++;
    if( h>=p->sz ) h = 0;
    if( (int)h>=p->sz ) h = 0;
  }
  assert( p->a[h] );
  h++;
  while( h<p->sz && p->a[h]<=0 ){
  while( (int)h<p->sz && p->a[h]<=0 ){
    h++;
  }
  return h<p->sz ? p->a[h] : 0;
  return (int)h<p->sz ? p->a[h] : 0;
}

/*
** Return the number of elements in the bag.
*/
int bag_count(Bag *p){
  return p->cnt;
}
Added src/bisect.c.






































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to implement the "bisect" command.
**
** This file also contains logic used to compute the closure of filename
** changes that have occurred across multiple check-ins.
*/
#include "config.h"
#include "bisect.h"
#include <assert.h>

/*
** Local variables for this module
*/
static struct {
  int bad;                /* The bad version */
  int good;               /* The good version */
} bisect;

/*
** Find the shortest path between bad and good.
*/
void bisect_path(void){
  PathNode *p;
  bisect.bad = db_lget_int("bisect-bad", 0);
  bisect.good = db_lget_int("bisect-good", 0);
  if( bisect.good>0 && bisect.bad==0 ){
    path_shortest(bisect.good, bisect.good, 0, 0, 0);
  }else if( bisect.bad>0 && bisect.good==0 ){
    path_shortest(bisect.bad, bisect.bad, 0, 0, 0);
  }else if( bisect.bad==0 && bisect.good==0 ){
    fossil_fatal("neither \"good\" nor \"bad\" versions have been identified");
  }else{
    Bag skip;
    int bDirect = bisect_option("direct-only");
    char *zLog = db_lget("bisect-log","");
    Blob log, id;
    bag_init(&skip);
    blob_init(&log, zLog, -1);
    while( blob_token(&log, &id) ){
      if( blob_str(&id)[0]=='s' ){
        bag_insert(&skip, atoi(blob_str(&id)+1));
      }
    }
    blob_reset(&log);
    p = path_shortest(bisect.good, bisect.bad, bDirect, 0, &skip);
    bag_clear(&skip);
    if( p==0 ){
      char *zBad = db_text(0,"SELECT uuid FROM blob WHERE rid=%d",bisect.bad);
      char *zGood = db_text(0,"SELECT uuid FROM blob WHERE rid=%d",bisect.good);
      fossil_fatal("no path from good ([%S]) to bad ([%S]) or back",
                   zGood, zBad);
    }
  }
}

/*
** The set of all bisect options.
*/
static const struct {
  const char *zName;
  const char *zDefault;
  const char *zDesc;
} aBisectOption[] = {
  { "auto-next",    "on",    "Automatically run \"bisect next\" after each "
                             "\"bisect good\", \"bisect bad\", or \"bisect "
                             "skip\"" },
  { "direct-only",  "on",    "Follow only primary parent-child links, not "
                             "merges\n" },
  { "display",    "chart",   "Command to run after \"next\".  \"chart\", "
                             "\"log\", \"status\", or \"none\"" },
  { "linear",     "off",     "Do a linear scan rather than a true bisect, "
                             "stopping at the first \"bad\" result"},
};

/*
** Return the value of a boolean bisect option.
*/
int bisect_option(const char *zName){
  unsigned int i;
  int r = -1;
  for(i=0; i<count(aBisectOption); i++){
    if( fossil_strcmp(zName, aBisectOption[i].zName)==0 ){
      char *zLabel = mprintf("bisect-%s", zName);
      char *z;
      if( g.localOpen ){
        z = db_lget(zLabel, (char*)aBisectOption[i].zDefault);
      }else{
        z = (char*)aBisectOption[i].zDefault;
      }
      if( is_truth(z) ) r = 1;
      if( is_false(z) ) r = 0;
      if( r<0 ) r = is_truth(aBisectOption[i].zDefault);
      free(zLabel);
      break;
    }
  }
  assert( r>=0 );
  return r;
}

/*
** List a bisect path.
*/
static void bisect_list(int abbreviated){
  PathNode *p;
  int vid = db_lget_int("checkout", 0);
  int n;
  Stmt s;
  int nStep;
  int nHidden = 0;
  bisect_path();
  db_prepare(&s, "SELECT blob.uuid, datetime(event.mtime) "
                 "  FROM blob, event"
                 " WHERE blob.rid=:rid AND event.objid=:rid"
                 "   AND event.type='ci'");
  nStep = path_length();
  if( abbreviated ){
    for(p=path_last(); p; p=p->pFrom) p->isHidden = 1;
    for(p=path_last(), n=0; p; p=p->pFrom, n++){
      if( p->rid==bisect.good
       || p->rid==bisect.bad
       || p->rid==vid
       || (nStep>1 && n==nStep/2)
      ){
        p->isHidden = 0;
        if( p->pFrom ) p->pFrom->isHidden = 0;
      }
    }
    for(p=path_last(); p; p=p->pFrom){
      if( p->pFrom && p->pFrom->isHidden==0 ) p->isHidden = 0;
    }
  }
  for(p=path_last(), n=0; p; p=p->pFrom, n++){
    if( p->isHidden && (nHidden || (p->pFrom && p->pFrom->isHidden)) ){
      nHidden++;
      continue;
    }else if( nHidden ){
      fossil_print("  ... %d other check-ins omitted\n", nHidden);
      nHidden = 0;
    }
    db_bind_int(&s, ":rid", p->rid);
    if( db_step(&s)==SQLITE_ROW ){
      const char *zUuid = db_column_text(&s, 0);
      const char *zDate = db_column_text(&s, 1);
      fossil_print("%s %S", zDate, zUuid);
      if( p->rid==bisect.good ) fossil_print(" GOOD");
      if( p->rid==bisect.bad ) fossil_print(" BAD");
      if( p->rid==vid ) fossil_print(" CURRENT");
      if( nStep>1 && n==nStep/2 ) fossil_print(" NEXT");
      fossil_print("\n");
    }
    db_reset(&s);
  }
  db_finalize(&s);
}

/*
** Append a new entry to the bisect log.  Update the bisect-good or
** bisect-bad values as appropriate.
**
** The bisect-log consists of a list of token.  Each token is an
** integer RID of a check-in.  The RID is negative for "bad" check-ins
** and positive for "good" check-ins.
*/
static void bisect_append_log(int rid){
  if( rid<0 ){
    if( db_lget_int("bisect-bad",0)==(-rid) ) return;
    db_lset_int("bisect-bad", -rid);
  }else{
    if( db_lget_int("bisect-good",0)==rid ) return;
    db_lset_int("bisect-good", rid);
  }
  db_multi_exec(
     "REPLACE INTO vvar(name,value) VALUES('bisect-log',"
       "COALESCE((SELECT value||' ' FROM vvar WHERE name='bisect-log'),'')"
       " || '%d')", rid);
}

/*
** Append a new skip entry to the bisect log.
*/
static void bisect_append_skip(int rid){
  db_multi_exec(
     "UPDATE vvar SET value=value||' s%d' WHERE name='bisect-log'", rid
  );
}

/*
** Create a TEMP table named "bilog" that contains the complete history
** of the current bisect.
**
** If iCurrent>0 then it is the RID of the current check-out and is included
** in the history table.
**
** If zDesc is not NULL, then it is the bid= query parameter to /timeline
** that describes a bisect.  Use the information in zDesc rather than in
** the bisect-log variable.
**
** If bDetail is true, then also include information about every node
** in between the inner-most GOOD and BAD nodes.
*/
int bisect_create_bilog_table(int iCurrent, const char *zDesc, int bDetail){
  char *zLog;
  Blob log, id;
  Stmt q;
  int cnt = 0;
  int lastGood = -1;
  int lastBad = -1;

  if( zDesc!=0 ){
    blob_init(&log, 0, 0);
    while( zDesc[0]=='y' || zDesc[0]=='n' || zDesc[0]=='s' ){
      int i;
      char c;
      int rid;
      if( blob_size(&log) ) blob_append(&log, " ", 1);
      if( zDesc[0]=='n' ) blob_append(&log, "-", 1);
      if( zDesc[0]=='s' ) blob_append(&log, "s", 1);
      for(i=1; ((c = zDesc[i])>='0' && c<='9') || (c>='a' && c<='f'); i++){}
      if( i==1 ) break;
      rid = db_int(0,
        "SELECT rid FROM blob"
        " WHERE uuid LIKE '%.*q%%'"
        "   AND EXISTS(SELECT 1 FROM plink WHERE cid=rid)",
        i-1, zDesc+1
      );
      if( rid==0 ) break;
      blob_appendf(&log, "%d", rid);
      zDesc += i;
      while( zDesc[0]=='-' ) zDesc++;
    }
  }else{
    zLog = db_lget("bisect-log","");
    blob_init(&log, zLog, -1);
  }
  db_multi_exec(
     "CREATE TEMP TABLE bilog("
     "  rid INTEGER PRIMARY KEY,"  /* Sequence of events */
     "  stat TEXT,"                /* Type of occurrence */
     "  seq INTEGER UNIQUE"        /* Check-in number */
     ");"
  );
  db_prepare(&q, "INSERT OR IGNORE INTO bilog(seq,stat,rid)"
                 " VALUES(:seq,:stat,:rid)");
  while( blob_token(&log, &id) ){
    int rid;
    db_bind_int(&q, ":seq", ++cnt);
    if( blob_str(&id)[0]=='s' ){
      rid = atoi(blob_str(&id)+1);
      db_bind_text(&q, ":stat", "SKIP");
      db_bind_int(&q, ":rid", rid);
    }else{
      rid = atoi(blob_str(&id));
      if( rid>0 ){
        db_bind_text(&q, ":stat","GOOD");
        db_bind_int(&q, ":rid", rid);
        lastGood = rid;
      }else{
        db_bind_text(&q, ":stat", "BAD");
        db_bind_int(&q, ":rid", -rid);
        lastBad = -rid;
      }
    }
    db_step(&q);
    db_reset(&q);
  }
  if( iCurrent>0 ){
    db_bind_int(&q, ":seq", ++cnt);
    db_bind_text(&q, ":stat", "CURRENT");
    db_bind_int(&q, ":rid", iCurrent);
    db_step(&q);
    db_reset(&q);
  }
  if( bDetail && lastGood>0 && lastBad>0 ){
    PathNode *p;
    p = path_shortest(lastGood, lastBad, bisect_option("direct-only"),0, 0);
    while( p ){
      db_bind_null(&q, ":seq");
      db_bind_null(&q, ":stat");
      db_bind_int(&q, ":rid", p->rid);
      db_step(&q);
      db_reset(&q);
      p = p->u.pTo;
    }
    path_reset();
  }
  db_finalize(&q);
  return 1;
}

/* Return a permalink description of a bisect.  Space is obtained from
** fossil_malloc() and should be freed by the caller.
**
** A bisect description consists of characters 'y' and 'n' and lowercase
** hex digits.  Each term begins with 'y' or 'n' (success or failure) and
** is followed by a hash prefix in lowercase hex.
*/
char *bisect_permalink(void){
  char *zLog = db_lget("bisect-log","");
  char *zResult;
  Blob log;
  Blob link = BLOB_INITIALIZER;
  Blob id;
  blob_init(&log, zLog, -1);
  while( blob_token(&log, &id) ){
    const char *zUuid;
    int rid;
    char cPrefix = 'y';
    if( blob_str(&id)[0]=='s' ){
      rid = atoi(blob_str(&id)+1);
      cPrefix = 's';
    }else{
      rid = atoi(blob_str(&id));
      if( rid<0 ){
        cPrefix = 'n';
        rid = -rid;
      }
    }
    zUuid = db_text(0,"SELECT lower(uuid) FROM blob WHERE rid=%d", rid);
    if( blob_size(&link)>0 ) blob_append(&link, "-", 1);
    blob_appendf(&link, "%c%.10s", cPrefix, zUuid);
  }
  zResult = mprintf("%s", blob_str(&link));
  blob_reset(&link);
  blob_reset(&log);
  blob_reset(&id);
  return zResult;
}

/*
** Show a chart of bisect "good" and "bad" versions.  The chart can be
** sorted either chronologically by bisect time, or by check-in time.
*/
static void bisect_chart(int sortByCkinTime){
  Stmt q;
  int iCurrent = db_lget_int("checkout",0);
  bisect_create_bilog_table(iCurrent, 0, 0);
  db_prepare(&q,
    "SELECT bilog.seq, bilog.stat,"
    "       substr(blob.uuid,1,16), datetime(event.mtime),"
    "       blob.rid==%d"
    "  FROM bilog, blob, event"
    " WHERE blob.rid=bilog.rid AND event.objid=bilog.rid"
    "   AND event.type='ci'"
    " ORDER BY %s bilog.rowid ASC",
    iCurrent, (sortByCkinTime ? "event.mtime DESC, " : "")
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zGoodBad = db_column_text(&q, 1);
    fossil_print("%3d %-7s %s %s%s\n",
        db_column_int(&q, 0),
        zGoodBad,
        db_column_text(&q, 3),
        db_column_text(&q, 2),
        (db_column_int(&q, 4) && zGoodBad[0]!='C') ? " CURRENT" : "");
  }
  db_finalize(&q);
}


/*
** Reset the bisect subsystem.
*/
void bisect_reset(void){
  db_multi_exec(
    "DELETE FROM vvar WHERE name IN "
    " ('bisect-good', 'bisect-bad', 'bisect-log', 'bisect-complete',"
    "  'bisect-linear')"
  );
}

/*
** fossil bisect run [OPTIONS] COMMAND
**
** Invoke COMMAND (with arguments) repeatedly to perform the bisect.
**
** Options:
**    -i|--interactive          Prompt user for decisions rather than
**                              using the return code from COMMAND
**    --ii                      Like -i but also pause after showing
**                              the status after each step.
*/
static void bisect_run(void){
  const char *zCmd;
  int isInteractive = 0;
  int i;
  if( g.argc<4 ){
    fossil_fatal("Usage: fossil bisect run [OPTIONS] COMMAND\n");
  }
  for(i=3; i<g.argc-1; i++){
    const char *zArg = g.argv[i];
    if( zArg[0]=='-' && zArg[1]=='-' && zArg[2]!=0 ) zArg++;
    if( strcmp(zArg, "-i")==0 || strcmp(zArg, "-interactive")==0 ){
      isInteractive = 1;
      continue;
    }
    if( strcmp(zArg, "-ii")==0 ){
      isInteractive = 2;
      continue;
    }
    fossil_fatal("unknown command-line option: \"%s\"\n", g.argv[i]);
  }
  zCmd = g.argv[i];
  if( db_int(0, "SELECT count(*) FROM vvar"
                " WHERE name IN ('bisect-good','bisect-bad')")!=2 ){
    fossil_fatal("need good/bad boundaries to use \"fossil bisect run\"");
  }
  while( db_lget_int("bisect-complete",0)==0 ){
    int rc;
    Blob cmd;
    blob_init(&cmd, 0, 0);
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    rc = fossil_unsafe_system(zCmd);
    if( isInteractive ){
      Blob in;
      fossil_print("test-command result: %d\n", rc);
      while(1){
        int n;
        char *z;
        prompt_user("Enter (g)ood, (b)ad, (s)kip, (a)uto, (h)alt: ", &in);
        n = blob_size(&in);
        z = blob_str(&in);
        if( n<1 ) continue;
        if( sqlite3_strnicmp("good", z, n)==0 ){
          rc = 0;
          break;
        }
        if( sqlite3_strnicmp("bad", z, n)==0 ){
          rc = 1;
          break;
        }
        if( sqlite3_strnicmp("skip", z, n)==0 ){
          rc = 125;
          break;
        }
        if( sqlite3_strnicmp("auto", z, n)==0 ){
          isInteractive = 0;
          break;
        }
        if( sqlite3_strnicmp("halt", z, n)==0 ){
          return;
        }
        blob_reset(&in);
      }
    }
    if( rc==0 ){
      blob_append(&cmd, " bisect good", -1);
    }else if( rc==125 ){
      blob_append(&cmd, " bisect skip", -1);
    }else{
      blob_append(&cmd, " bisect bad", -1);
    }
    fossil_print("%s\n", blob_str(&cmd));
    fossil_system(blob_str(&cmd));
    blob_reset(&cmd);
    if( isInteractive>=2 && db_lget_int("bisect-complete", 0)==0 ){
      int n;
      char *z;
      Blob in;
      int bContinue = 1;
      prompt_user("Run testcase again?  (Y)es or No: ", &in);
      n = blob_size(&in);
      z = blob_str(&in);
      if( n>0 && sqlite3_strnicmp("no", z, n)==0 ) bContinue = 0;
      blob_reset(&in);
      if( !bContinue ) break;
    }
  }
}

/*
** COMMAND: bisect
**
** Usage: %fossil bisect SUBCOMMAND ...
**
** Run various subcommands useful for searching back through the change
** history for a particular check-in that causes or fixes a problem.
**
** > fossil bisect bad ?VERSION?
**
**       Identify version VERSION as non-working.  If VERSION is omitted,
**       the current check-out is marked as non-working.
**
** > fossil bisect good ?VERSION?
**
**       Identify version VERSION as working.  If VERSION is omitted,
**       the current check-out is marked as working.
**
** > fossil bisect log
** > fossil bisect chart
**
**       Show a log of "good", "bad", and "skip" versions.  "bisect log"
**       shows the  events in the order that they were tested.
**       "bisect chart" shows them in order of check-in.
**
** > fossil bisect next
**
**       Update to the next version that is halfway between the working and
**       non-working versions.
**
** > fossil bisect options ?NAME? ?VALUE?
**
**       List all bisect options, or the value of a single option, or set the
**       value of a bisect option.
**
** > fossil bisect reset
**
**       Reinitialize a bisect session.  This cancels prior bisect history
**       and allows a bisect session to start over from the beginning.
**
** > fossil bisect run [OPTIONS] COMMAND
**
**       Invoke COMMAND repeatedly to run the bisect.  The exit code for
**       COMMAND should be 0 for "good", 125 for "skip", and any other value
**       for "bad".
**
**       Options:
**          -i|--interactive    Prompt the user for the good/bad/skip decision
**                              after each step, rather than using the exit
**                              code from COMMAND
**
** > fossil bisect skip ?VERSION?
**
**       Cause VERSION (or the current check-out if VERSION is omitted) to
**       be ignored for the purpose of the current bisect.  This might
**       be done, for example, because VERSION does not compile correctly
**       or is otherwise unsuitable to participate in this bisect.
**
** > fossil bisect vlist|ls|status ?-a|--all?
**
**       List the versions in between the inner-most "bad" and "good".
**
** > fossil bisect ui
**
**       Like "fossil ui" except start on a timeline that shows only the
**       check-ins that are part of the current bisect.
**
** > fossil bisect undo
**
**       Undo the most recent "good", "bad", or "skip" command.
*/
void bisect_cmd(void){
  int n;
  const char *zCmd;
  int foundCmd = 0;
  db_must_be_within_tree();
  if( g.argc<3 ){
    goto usage;
  }
  zCmd = g.argv[2];
  n = strlen(zCmd);
  if( n==0 ) zCmd = "-";
  if( strncmp(zCmd, "bad", n)==0 ){
    int ridBad;
    foundCmd = 1;
    if( g.argc==3 ){
      ridBad = db_lget_int("checkout",0);
    }else{
      ridBad = name_to_typed_rid(g.argv[3], "ci");
    }
    if( ridBad>0 ){
      bisect_append_log(-ridBad);
      if( bisect_option("auto-next") && db_lget_int("bisect-good",0)>0 ){
        zCmd = "next";
        n = 4;
      }
    }
  }else if( strncmp(zCmd, "good", n)==0 ){
    int ridGood;
    foundCmd = 1;
    if( g.argc==3 ){
      ridGood = db_lget_int("checkout",0);
    }else{
      ridGood = name_to_typed_rid(g.argv[3], "ci");
    }
    if( ridGood>0 ){
      bisect_append_log(ridGood);
      if( bisect_option("auto-next") && db_lget_int("bisect-bad",0)>0 ){
        zCmd = "next";
        n = 4;
      }
    }
  }else if( strncmp(zCmd, "skip", n)==0 ){
    int ridSkip;
    foundCmd = 1;
    if( g.argc==3 ){
      ridSkip = db_lget_int("checkout",0);
    }else{
      ridSkip = name_to_typed_rid(g.argv[3], "ci");
    }
    if( ridSkip>0 ){
      bisect_append_skip(ridSkip);
      if( bisect_option("auto-next")
       && db_lget_int("bisect-bad",0)>0
       && db_lget_int("bisect-good",0)>0
      ){
        zCmd = "next";
        n = 4;
      }
    }
  }else if( strncmp(zCmd, "undo", n)==0 ){
    char *zLog;
    Blob log, id;
    int ridBad = 0;
    int ridGood = 0;
    int cnt = 0, i;
    foundCmd = 1;
    db_begin_transaction();
    zLog = db_lget("bisect-log","");
    blob_init(&log, zLog, -1);
    while( blob_token(&log, &id) ){ cnt++; }
    if( cnt==0 ){
      fossil_fatal("no previous bisect steps to undo");
    }
    blob_rewind(&log);
    for(i=0; i<cnt-1; i++){
      int rid;
      blob_token(&log, &id);
      rid = atoi(blob_str(&id));
      if( rid<0 ) ridBad = -rid;
      else        ridGood = rid;
    }
    db_multi_exec(
      "UPDATE vvar SET value=substr(value,1,%d) WHERE name='bisect-log'",
      log.iCursor-1
    );
    db_lset_int("bisect-bad", ridBad);
    db_lset_int("bisect-good", ridGood);
    db_end_transaction(0);
    if( ridBad && ridGood ){
      zCmd = "next";
      n = 4;
    }
  }
  /* No else here so that the above commands can morph themselves into
  ** a "next" command */
  if( strncmp(zCmd, "next", n)==0 ){
    PathNode *pMid;
    char *zDisplay = db_lget("bisect-display","chart");
    int m = (int)strlen(zDisplay);
    bisect_path();
    if( db_lget_boolean("bisect-linear",0) ){
      pMid = path_next();
      if( pMid && pMid->rid==db_lget_int("checkout",0) ) pMid = 0;
    }else{
      pMid = path_midpoint();
    }
    if( pMid==0 ){
      fossil_print("bisect complete\n");
      db_lset_int("bisect-complete",1);
    }else{
      int nSpan = path_length_not_hidden();
      int nStep = path_search_depth();
      g.argv[1] = "update";
      g.argv[2] = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", pMid->rid);
      g.argc = 3;
      g.fNoSync = 1;
      update_cmd();
      fossil_print("span: %d  steps-remaining: %d\n", nSpan, nStep);
    }

    if( strncmp(zDisplay,"chart",m)==0 ){
      bisect_chart(1);
    }else if( strncmp(zDisplay, "log", m)==0 ){
      bisect_chart(0);
    }else if( strncmp(zDisplay, "status", m)==0 ){
      bisect_list(1);
    }
  }else if( strncmp(zCmd, "log", n)==0 ){
    bisect_chart(0);
  }else if( strncmp(zCmd, "chart", n)==0 ){
    bisect_chart(1);
  }else if( strncmp(zCmd, "run", n)==0 ){
    bisect_run();
  }else if( strncmp(zCmd, "options", n)==0 ){
    if( g.argc==3 ){
      unsigned int i;
      for(i=0; i<count(aBisectOption); i++){
        char *z = mprintf("bisect-%s", aBisectOption[i].zName);
        fossil_print("  %-15s  %-6s  ", aBisectOption[i].zName,
               db_lget(z, (char*)aBisectOption[i].zDefault));
        fossil_free(z);
        comment_print(aBisectOption[i].zDesc, 0, 27, -1, get_comment_format());
      }
    }else if( g.argc==4 || g.argc==5 ){
      unsigned int i;
      n = strlen(g.argv[3]);
      for(i=0; i<count(aBisectOption); i++){
        if( strncmp(g.argv[3], aBisectOption[i].zName, n)==0 ){
          char *z = mprintf("bisect-%s", aBisectOption[i].zName);
          if( g.argc==5 ){
            db_lset(z/*works-like:"bisect-%s"*/, g.argv[4]);
          }
          fossil_print("%s\n", db_lget(z, (char*)aBisectOption[i].zDefault));
          fossil_free(z);
          break;
        }
      }
      if( i>=count(aBisectOption) ){
        fossil_fatal("no such bisect option: %s", g.argv[3]);
      }
    }else{
      usage("options ?NAME? ?VALUE?");
    }
  }else if( strncmp(zCmd, "reset", n)==0 ){
    bisect_reset();
  }else if( strcmp(zCmd, "ui")==0 ){
    char *newArgv[8];
    newArgv[0] = g.argv[0];
    newArgv[1] = "ui";
    newArgv[2] = "--page";
    newArgv[3] = "timeline?bisect";
    newArgv[4] = 0;
    g.argv = newArgv;
    g.argc = 4;
    cmd_webserver();
  }else if( strncmp(zCmd, "vlist", n)==0
         || strncmp(zCmd, "ls", n)==0
         || strncmp(zCmd, "status", n)==0
  ){
    int fAll = find_option("all", "a", 0)!=0;
    bisect_list(!fAll);
  }else if( !foundCmd ){
usage:
    usage("bad|good|log|chart|next|options|reset|run|skip|status|ui|undo");
  }
}
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** A Blob is a variable-length containers for arbitrary string
** or binary data.
*/
#include "config.h"
#include <zlib.h>
#include "blob.h"
#if defined(_WIN32)
#include <fcntl.h>
#include <io.h>
#endif

#if INTERFACE
/*
** A Blob can hold a string or a binary object of arbitrary size.  The
** size changes as necessary.
*/
struct Blob {
  unsigned int nUsed;            /* Number of bytes used in aData[] */
  unsigned int nAlloc;           /* Number of bytes allocated for aData[] */
  unsigned int iCursor;          /* Next character of input to parse */
  unsigned int blobFlags;        /* One or more BLOBFLAG_* bits */
  char *aData;                   /* Where the information is stored */
  void (*xRealloc)(Blob*, unsigned int); /* Function to reallocate the buffer */
};

/*
** Allowed values for Blob.blobFlags
*/
#define BLOBFLAG_NotSQL  0x0001      /* Non-SQL text */

/*
** The current size of a Blob
*/
#define blob_size(X)  ((X)->nUsed)

/*
** The buffer holding the blob data
*/
#define blob_buffer(X)  ((X)->aData)

/*
** Number of elements that fits into the current blob's size
*/
#define blob_count(X,elType)  (blob_size(X)/sizeof(elType))

/*
** Append blob contents to another
*/
#define blob_appendb(dest, src) \
  blob_append((dest), blob_buffer(src), blob_size(src))

/*
** Append a string literal to a blob
** TODO: Consider renaming to blob_appendl()
*/
#define blob_append_literal(blob, literal) \
  blob_append((blob), "" literal, (sizeof literal)-1)
  /*
   * The empty string in the second argument leads to a syntax error
   * when the macro is not used with a string literal. Unfortunately
   * the error is not overly explicit.
   */

/*
** TODO: Suggested for removal because the name seems misleading.
*/
#define blob_append_string blob_append_literal

/*
** Seek whence parameter values
*/
#define BLOB_SEEK_SET 1
#define BLOB_SEEK_CUR 2
#define BLOB_SEEK_END 3

#endif /* INTERFACE */

/*
** Make sure a blob is initialized
*/
#define blob_is_init(x) \
  assert((x)->xRealloc==blobReallocMalloc || (x)->xRealloc==blobReallocStatic)

/*
** Make sure a blob does not contain malloced memory.
**
** This might fail if we are unlucky and x is uninitialized.  For that
** reason it should only be used locally for debugging.  Leave it turned
** off for production.
*/
#if 0  /* Enable for debugging only */
#define blob_is_reset(x) \
#define assert_blob_is_reset(x) assert(blob_is_reset(x))
  assert((x)->xRealloc!=blobReallocMalloc || (x)->nAlloc==0)
#else
#define blob_is_reset(x)
#define assert_blob_is_reset(x)
#endif



/*
** We find that the built-in isspace() function does not work for
** some international character sets.  So here is a substitute.
*/
static int blob_isspace(char c){
int fossil_isspace(char c){
  return c==' ' || (c<='\r' && c>='\t');
}

/*
** Other replacements for ctype.h functions.
*/
int fossil_islower(char c){ return c>='a' && c<='z'; }
int fossil_isupper(char c){ return c>='A' && c<='Z'; }
int fossil_isdigit(char c){ return c>='0' && c<='9'; }
int fossil_isxdigit(char c){ return (c>='0' && c<='9') || (c>='a' && c<='f'); }
int fossil_isXdigit(char c){
   return (c>='0' && c<='9') || (c>='A' && c<='F') || (c>='a' && c<='f');
}
int fossil_tolower(char c){
  return fossil_isupper(c) ? c - 'A' + 'a' : c;
}
int fossil_toupper(char c){
  return fossil_islower(c) ? c - 'a' + 'A' : c;
}
int fossil_isalpha(char c){
  return (c>='a' && c<='z') || (c>='A' && c<='Z');
}
int fossil_isalnum(char c){
  return (c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9');
}

/* Return true if and only if the entire string consists of only
** alphanumeric characters.
*/
int fossil_no_strange_characters(const char *z){
  while( z && (fossil_isalnum(z[0]) || z[0]=='_' || z[0]=='-') ) z++;
  return z[0]==0;
}


/*
** COMMAND: test-isspace
**
** Verify that the fossil_isspace() routine is working correctly by
** testing it on all possible inputs.
*/
void isspace_cmd(void){
  int i;
  for(i=0; i<=255; i++){
    if( i==' ' || i=='\n' || i=='\t' || i=='\v'
        || i=='\f' || i=='\r' ){
      assert( blob_isspace((char)i) );
      assert( fossil_isspace((char)i) );
    }else{
      assert( !blob_isspace((char)i) );
      assert( !fossil_isspace((char)i) );
    }
  }
  printf("All 256 characters OK\n");
  fossil_print("All 256 characters OK\n");
}

/*
** This routine is called if a blob operation fails because we
** have run out of memory.
*/
static void blob_panic(void){
  static const char zErrMsg[] = "out of memory\n";
  write(2, zErrMsg, sizeof(zErrMsg)-1);
  exit(1);
  fputs(zErrMsg, stderr);
  fossil_exit(1);
}

/*
** Maximum size of a Blob's managed memory. This is ~2GB, largely for
** historical reasons.
**
*/
#define MAX_BLOB_SIZE 0x7fff0000

/*
** If n >= MAX_BLOB_SIZE, calls blob_panic(),
** else this is a no-op.
*/
static void blob_assert_safe_size(i64 n){
  if( n>=(i64)MAX_BLOB_SIZE ){
    blob_panic();
  }
}

/*
** A reallocation function that assumes that aData came from malloc().
** This function attempts to resize the buffer of the blob to hold
** newSize bytes.  
** newSize bytes.
**
** No attempt is made to recover from an out-of-memory error.
** If an OOM error occurs, an error message is printed on stderr
** and the program exits.
*/
void blobReallocMalloc(Blob *pBlob, unsigned int newSize){
  if( newSize==0 ){
    free(pBlob->aData);
    pBlob->aData = 0;
    pBlob->nAlloc = 0;
    pBlob->nUsed = 0;
    pBlob->iCursor = 0;
    pBlob->blobFlags = 0;
  }else if( newSize>pBlob->nAlloc || newSize<pBlob->nAlloc-4000 ){
    char *pNew = realloc(pBlob->aData, newSize);
    if( pNew==0 ) blob_panic();
  }else if( newSize>pBlob->nAlloc || newSize+4000<pBlob->nAlloc ){
    char *pNew;
    blob_assert_safe_size((i64)newSize);
    pNew = fossil_realloc(pBlob->aData, newSize);
    pBlob->aData = pNew;
    pBlob->nAlloc = newSize;
    if( pBlob->nUsed>pBlob->nAlloc ){
      pBlob->nUsed = pBlob->nAlloc;
    }
  }
}

/*
** An initializer for Blobs
*/
#if INTERFACE
#define BLOB_INITIALIZER  {0,0,0,0,blobReallocMalloc}
#define BLOB_INITIALIZER  {0,0,0,0,0,blobReallocMalloc}
#endif
const Blob empty_blob = BLOB_INITIALIZER;

/*
** A reallocation function for when the initial string is in unmanaged
** space.  Copy the string to memory obtained from malloc().
*/
static void blobReallocStatic(Blob *pBlob, unsigned int newSize){
  if( newSize==0 ){
    *pBlob = empty_blob;
  }else{
    char *pNew = malloc( newSize );
    if( pNew==0 ) blob_panic();
    char *pNew;
    blob_assert_safe_size((i64)newSize);
    pNew = fossil_malloc( newSize );
    if( pBlob->nUsed>newSize ) pBlob->nUsed = newSize;
    memcpy(pNew, pBlob->aData, pBlob->nUsed);
    pBlob->aData = pNew;
    pBlob->xRealloc = blobReallocMalloc;
    pBlob->nAlloc = newSize;
  }
}

/*
** Reset a blob to be an empty container.
*/
void blob_reset(Blob *pBlob){
  blob_is_init(pBlob);
  pBlob->xRealloc(pBlob, 0);
}


/*
** Return true if the blob has been zeroed - in other words if it contains
** no malloced memory.  This only works reliably if the blob has been
** initialized - it can return a false negative on an uninitialized blob.
*/
int blob_is_reset(Blob *pBlob){
  if( pBlob==0 ) return 1;
  if( pBlob->nUsed ) return 0;
  if( pBlob->xRealloc==blobReallocMalloc && pBlob->nAlloc ) return 0;
  return 1;
}

/*
** Initialize a blob to a string or byte-array constant of a specified length.
** Any prior data in the blob is discarded.
*/
void blob_init(Blob *pBlob, const char *zData, int size){
  blob_is_reset(pBlob);
  assert_blob_is_reset(pBlob);
  if( zData==0 ){
    *pBlob = empty_blob;
  }else{
    if( size<=0 ) size = strlen(zData);
    pBlob->nUsed = pBlob->nAlloc = size;
    pBlob->aData = (char*)zData;
    pBlob->iCursor = 0;
    pBlob->blobFlags = 0;
    pBlob->xRealloc = blobReallocStatic;
  }
}

/*
** Initialize a blob to a nul-terminated string.
** Any prior data in the blob is discarded.
*/
void blob_set(Blob *pBlob, const char *zStr){
  blob_init(pBlob, zStr, -1);
}

/*
** Initialize a blob to a nul-terminated string obtained from fossil_malloc().
** The blob will take responsibility for freeing the string.
*/
void blob_set_dynamic(Blob *pBlob, char *zStr){
  blob_init(pBlob, zStr, -1);
  pBlob->xRealloc = blobReallocMalloc;
}

/*
** Initialize a blob to an empty string.
*/
void blob_zero(Blob *pBlob){
  static const char zEmpty[] = "";
  blob_is_reset(pBlob);
  assert_blob_is_reset(pBlob);
  pBlob->nUsed = 0;
  pBlob->nAlloc = 1;
  pBlob->aData = (char*)zEmpty;
  pBlob->iCursor = 0;
  pBlob->blobFlags = 0;
  pBlob->xRealloc = blobReallocStatic;
}

/*
** Append text or data to the end of a blob.
** Append text or data to the end of a blob.  Or, if pBlob==NULL, send
** the text to standard output in terminal mode, or to standard CGI output
** in CGI mode.
**
** If nData<0 then output all of aData up to the first 0x00 byte.
**
** Use the blob_append() routine in all application code.  The blob_append()
** routine is faster, but blob_append_full() handles all the corner cases.
** The blob_append() routine automatically calls blob_append_full() if
** necessary.
*/
void blob_append(Blob *pBlob, const char *aData, int nData){
  blob_is_init(pBlob);
static void blob_append_full(Blob *pBlob, const char *aData, int nData){
  sqlite3_int64 nNew;
  /* assert( aData!=0 || nData==0 ); // omitted for speed */
  /* blob_is_init(pBlob); // omitted for speed */
  if( nData<0 ) nData = strlen(aData);
  if( nData==0 ) return;
  if( pBlob==0 ){
    if( g.cgiOutput ){
      pBlob = cgi_output_blob();
    }else{
      fossil_puts(aData, 0, nData);
      return;
    }
  }
  nNew = pBlob->nUsed;
  nNew += nData;
  if( pBlob->nUsed + nData >= pBlob->nAlloc ){
    pBlob->xRealloc(pBlob, pBlob->nUsed + nData + pBlob->nAlloc + 100);
  if( nNew >= pBlob->nAlloc ){
    nNew += pBlob->nAlloc;
    nNew += 100;
    blob_assert_safe_size(nNew);
    pBlob->xRealloc(pBlob, (unsigned)nNew);
    if( pBlob->nUsed + nData >= pBlob->nAlloc ){
      blob_panic();
    }
  }
  memcpy(&pBlob->aData[pBlob->nUsed], aData, nData);
  pBlob->nUsed += nData;
  pBlob->aData[pBlob->nUsed] = 0;   /* Blobs are always nul-terminated */
}
void blob_append(Blob *pBlob, const char *aData, int nData){
  sqlite3_int64 nUsed;
  /* assert( aData!=0 || nData==0 ); // omitted for speed */
  if( nData<=0 || pBlob==0 || pBlob->nUsed + nData >= pBlob->nAlloc ){
    blob_append_full(pBlob, aData, nData);
    return;

  }
  nUsed = pBlob->nUsed;
  pBlob->nUsed += nData;
  pBlob->aData[pBlob->nUsed] = 0;
  memcpy(&pBlob->aData[nUsed], aData, nData);
}

/*
** Append a single character to the blob.  If pBlob is zero then the
** character is written directly to stdout.
*/
void blob_append_char(Blob *pBlob, char c){
  if( pBlob==0 || pBlob->nUsed+1 >= pBlob->nAlloc ){
    blob_append_full(pBlob, &c, 1);
  }else{
    pBlob->aData[pBlob->nUsed++] = c;
  }
}

/*
** Copy a blob
** Copy a blob.  pTo is reinitialized to be a copy of pFrom.
*/
void blob_copy(Blob *pTo, Blob *pFrom){
  blob_is_init(pFrom);
  blob_zero(pTo);
  blob_append(pTo, blob_buffer(pFrom), blob_size(pFrom));
}

/*
** Append the second blob onto the end of the first blob and reset the
** second blob.  If the first blob (pTo) is NULL, then the content
** of the second blob is written to stdout or to CGI depending on if the
** Fossil is running in terminal or CGI mode.
*/
void blob_append_xfer(Blob *pTo, Blob *pFrom){
  blob_append(pTo, blob_buffer(pFrom), blob_size(pFrom));
  blob_reset(pFrom);
}

/*
** Write into pOut, a string literal representation for the first n bytes
** of z[].  The string literal representation is compatible with C, TCL,
** and JSON.  Double-quotes are added to both ends.  Double-quote and
** backslash characters are escaped.
*/
void blob_append_tcl_literal(Blob *pOut, const char *z, int n){
  int i;
  blob_append_char(pOut, '"');
  for(i=0; i<n; i++){
    char c = z[i];
    switch( c ){
      case '\r':  c = 'r';
      case '[':
      case ']':
      case '$':
      case '"':
      case '\\':
        blob_append_char(pOut, '\\');
      default:
        blob_append_char(pOut, c);
    }
  }
  blob_append_char(pOut, '"');
}
void blob_append_json_literal(Blob *pOut, const char *z, int n){
  int i;
  blob_append_char(pOut, '"');
  for(i=0; i<n; i++){
    char c = z[i];
    switch( c ){
      case 0x00:
      case 0x01:
      case 0x02:
      case 0x03:
      case 0x04:
      case 0x05:
      case 0x06:
      case 0x07: c += '0' - 0x00; blob_append(pOut, "\\u000",5); break;
      case 0x0b:
      case 0x0e:
      case 0x0f: c += 'a' - 0x0a; blob_append(pOut, "\\u000",5); break;
      case 0x10:
      case 0x11:
      case 0x12:
      case 0x13:
      case 0x14:
      case 0x15:
      case 0x16:
      case 0x17:
      case 0x18:
      case 0x19: c += '0' - 0x10; blob_append(pOut, "\\u001",5); break;
      case 0x1a:
      case 0x1b:
      case 0x1c:
      case 0x1d:
      case 0x1e:
      case 0x1f: c += 'a' - 0x1a; blob_append(pOut, "\\u001",5); break;
      case '\b': c = 'b';         blob_append_char(pOut, '\\');  break;
      case '\t': c = 't';         blob_append_char(pOut, '\\');  break;
      case '\r': c = 'r';         blob_append_char(pOut, '\\');  break;
      case '\n': c = 'n';         blob_append_char(pOut, '\\');  break;
      case '\f': c = 'f';         blob_append_char(pOut, '\\');  break;
      case '"':                   blob_append_char(pOut, '\\');  break;
      case '\\':                  blob_append_char(pOut, '\\');  break;
      default:                                                   break;
    }
    blob_append_char(pOut, c);
  }
  blob_append_char(pOut, '"');
}


/*
** Return a pointer to a null-terminated string for a blob.
*/
char *blob_str(Blob *p){
  blob_is_init(p);
  if( p->nUsed==0 ){
    blob_append(p, "", 1);
    blob_append_char(p, 0); /* NOTE: Changes nUsed. */
    p->nUsed = 0;
  }
  if( p->nUsed<p->nAlloc ){
  if( p->aData[p->nUsed]!=0 ){
    p->aData[p->nUsed] = 0;
  }else{
    blob_materialize(p);
  }
  return p->aData;
}

/*
** Compute the string length of a Blob.  If there are embedded
** nul characters, truncate the to blob at the first nul.
*/
int blob_strlen(Blob *p){
  char *z = blob_str(p);
  if( z==0 ) return 0;
  p->nUsed = (int)strlen(p->aData);
  return p->nUsed;
}

/*
** Return a pointer to a null-terminated string for a blob that has
** been created using blob_append_sql() and not blob_appendf().  If
** text was ever added using blob_appendf() then throw an error.
*/
char *blob_sql_text(Blob *p){
  blob_is_init(p);
  if( (p->blobFlags & BLOBFLAG_NotSQL) ){
    fossil_panic("use of blob_appendf() to construct SQL text");
  }
  return blob_str(p);
}


/*
** Return a pointer to a null-terminated string for a blob.
**
** WARNING:  If the blob is ephemeral, it might cause a '\000'
** character to be inserted into the middle of the parent blob.
** Example:  Suppose p is a token extracted from some larger
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  blob_is_init(p);
  if( p->nUsed==0 ) return "";
  p->aData[p->nUsed] = 0;
  return p->aData;
}

/*
** Compare two blobs.
** Compare two blobs.  Return negative, zero, or positive if the first
** blob is less then, equal to, or greater than the second.
*/
int blob_compare(Blob *pA, Blob *pB){
int blob_compare(const Blob *pA, const Blob *pB){
  int szA, szB, sz, rc;
  blob_is_init(pA);
  blob_is_init(pB);
  szA = blob_size(pA);
  szB = blob_size(pB);
  sz = szA<szB ? szA : szB;
  rc = memcmp(blob_buffer(pA), blob_buffer(pB), sz);
  if( rc==0 ){
    rc = szA - szB;
  }
  return rc;
}

/*
** Compare two blobs in constant time and return zero if they are equal.
** Constant time comparison only applies for blobs of the same length.
** If lengths are different, immediately returns 1.
*/
int blob_constant_time_cmp(Blob *pA, Blob *pB){
  int szA, szB, i;
  unsigned char *buf1, *buf2;
  unsigned char rc = 0;

  blob_is_init(pA);
  blob_is_init(pB);
  szA = blob_size(pA);
  szB = blob_size(pB);
  if( szA!=szB || szA==0 ) return 1;

  buf1 = (unsigned char*)blob_buffer(pA);
  buf2 = (unsigned char*)blob_buffer(pB);

  for( i=0; i<szA; i++ ){
    rc = rc | (buf1[i] ^ buf2[i]);
  }

  return rc;
}

/*
** Compare a blob to a string.  Return TRUE if they are equal.
*/
int blob_eq_str(Blob *pBlob, const char *z, int n){
  Blob t;
  blob_is_init(pBlob);
  if( n<=0 ) n = strlen(z);
  if( n<=0 ) n = (int)strlen(z);
  t.aData = (char*)z;
  t.nUsed = n;
  t.xRealloc = blobReallocStatic;
  return blob_compare(pBlob, &t)==0;
}

/*
** This macro compares a blob against a string constant.  We use the sizeof()
** operator on the string constant twice, so it really does need to be a
** string literal or character array - not a character pointer.
*/
#if INTERFACE
# define blob_eq(B,S) \
     ((B)->nUsed==sizeof(S)-1 && memcmp((B)->aData,S,sizeof(S)-1)==0)
     ((B)->nUsed==sizeof(S"")-1 && memcmp((B)->aData,S,sizeof(S)-1)==0)
#endif


/*
** Attempt to resize a blob so that its internal buffer is 
** Attempt to resize a blob so that its internal buffer is
** nByte in size.  The blob is truncated if necessary.
*/
void blob_resize(Blob *pBlob, unsigned int newSize){
  pBlob->xRealloc(pBlob, newSize+1);
  pBlob->nUsed = newSize;
  pBlob->aData[newSize] = 0;
}

/*
** Ensures that the given blob has at least the given amount of memory
** allocated to it. Does not modify pBlob->nUsed nor will it reduce
** the currently-allocated amount of memory.
**
** For semantic compatibility with blob_append_full(), if newSize is
** >=MAX_BLOB_SIZE then this function will trigger blob_panic(). If it
** didn't, it would be possible to bypass that hard-coded limit via
** this function.
**
** We've had at least one report:
**   https://fossil-scm.org/forum/forumpost/b7bbd28db4
** which implies that this is unconditionally failing on mingw 32-bit
** builds.
*/
void blob_reserve(Blob *pBlob, unsigned int newSize){
  blob_assert_safe_size( (i64)newSize );
  if(newSize>pBlob->nAlloc){
    pBlob->xRealloc(pBlob, newSize+1);
    pBlob->aData[newSize] = 0;
  }
}

/*
** Make sure a blob is nul-terminated and is not a pointer to unmanaged
** space.  Return a pointer to the
** space.  Return a pointer to the data.
*/
char *blob_materialize(Blob *pBlob){
  blob_resize(pBlob, pBlob->nUsed);
  return pBlob->aData;
}


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** Extract N bytes from blob pFrom and use it to initialize blob pTo.
** Return the actual number of bytes extracted.
**
** After this call completes, pTo will be an ephemeral blob.
*/
int blob_extract(Blob *pFrom, int N, Blob *pTo){
  blob_is_init(pFrom);
  blob_is_reset(pTo);
  assert_blob_is_reset(pTo);
  if( pFrom->iCursor + N > pFrom->nUsed ){
    N = pFrom->nUsed - pFrom->iCursor;
    if( N<=0 ){
      blob_zero(pTo);
      return 0;
    }
  }
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/*
** Rewind the cursor on a blob back to the beginning.
*/
void blob_rewind(Blob *p){
  p->iCursor = 0;
}

/*
** Truncate a blob back to zero length
*/
void blob_truncate(Blob *p, int sz){
  if( sz>=0 && sz<(int)(p->nUsed) ) p->nUsed = sz;
}

/*
** Seek the cursor in a blob to the indicated offset.
*/
int blob_seek(Blob *p, int offset, int whence){
  if( whence==BLOB_SEEK_SET ){
    p->iCursor = offset;
  }else if( whence==BLOB_SEEK_CUR ){
    p->iCursor += offset;
  }else if( whence==BLOB_SEEK_END ){
    p->iCursor = p->nUsed + offset - 1;
  }
  if( p->iCursor<0 ){
    p->iCursor = 0;
  }
  if( p->iCursor>p->nUsed ){
    p->iCursor = p->nUsed;
  }
  return p->iCursor;
}

/*
** Return the current offset into the blob
*/
int blob_tell(Blob *p){
  return p->iCursor;
}

/*
** Extract a single line of text from pFrom beginning at the current 
** Extract a single line of text from pFrom beginning at the current
** cursor location and use that line of text to initialize pTo.
** pTo will include the terminating \n.  Return the number of bytes
** in the line including the \n at the end.  0 is returned at
** end-of-file.
**
** The cursor of pFrom is left pointing at the first byte past the
** \n that terminated the line.
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**
** All this does is reduce the length counter.  This routine does
** not insert a new zero terminator.
*/
int blob_trim(Blob *p){
  char *z = p->aData;
  int n = p->nUsed;
  while( n>0 && blob_isspace(z[n-1]) ){ n--; }
  while( n>0 && fossil_isspace(z[n-1]) ){ n--; }
  p->nUsed = n;
  return n;
}

/*
** Extract a single token from pFrom and use it to initialize pTo.
** Return the number of bytes in the token.  If no token is found,
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** pTo will be an ephermeral blob.  If pFrom changes, it might alter
** pTo as well.
*/
int blob_token(Blob *pFrom, Blob *pTo){
  char *aData = pFrom->aData;
  int n = pFrom->nUsed;
  int i = pFrom->iCursor;
  while( i<n && blob_isspace(aData[i]) ){ i++; }
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  while( i<n && !fossil_isspace(aData[i]) ){ i++; }
  blob_extract(pFrom, i-pFrom->iCursor, pTo);
  while( i<n && !blob_isspace(aData[i]) ){ i++; }
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  return pTo->nUsed;
}

/*
** Extract a single SQL token from pFrom and use it to initialize pTo.
** Return the number of bytes in the token.  If no token is found,
** return 0.
**
** An SQL token consists of one or more non-space characters.  If the
** first character is ' then the token is terminated by a matching '
** (ignoring double '') or by the end of the string
**
** The cursor of pFrom is left pointing at the first character past
** the end of the token.
**
** pTo will be an ephermeral blob.  If pFrom changes, it might alter
** pTo as well.
*/
int blob_sqltoken(Blob *pFrom, Blob *pTo){
  char *aData = pFrom->aData;
  int n = pFrom->nUsed;
  int i = pFrom->iCursor;
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  if( aData[i]=='\'' ){
    i++;
    while( i<n ){
      if( aData[i]=='\'' ){
        if( aData[++i]!='\'' ) break;
      }
      i++;
    }
  }else{
    while( i<n && !fossil_isspace(aData[i]) ){ i++; }
  }
  blob_extract(pFrom, i-pFrom->iCursor, pTo);
  while( i<n && blob_isspace(aData[i]) ){ i++; }
  while( i<n && fossil_isspace(aData[i]) ){ i++; }
  pFrom->iCursor = i;
  return pTo->nUsed;
}

/*
** Extract everything from the current cursor to the end of the blob
** into a new blob.  The new blob is an ephemerial reference to the
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  if( pTo ){
    blob_append(pTo, &pFrom->aData[pFrom->iCursor], i - pFrom->iCursor);
  }
  pFrom->iCursor = i;
}

/*
** Remove comment lines (starting with '#') from a blob pIn.
** Keep lines starting with "\#" but remove the initial backslash.
**
** Store the result in pOut.  It is ok for pIn and pOut to be the same blob.
**
** pOut must either be the same as pIn or else uninitialized.
*/
void blob_strip_comment_lines(Blob *pIn, Blob *pOut){
  char *z = pIn->aData;
  unsigned int i = 0;
  unsigned int n = pIn->nUsed;
  unsigned int lineStart = 0;
  unsigned int copyStart = 0;
  int doCopy = 1;
  Blob temp;
  blob_zero(&temp);

  while( i<n ){
    if( i==lineStart && z[i]=='#' ){
      copyStart = i;
      doCopy = 0;
    }else if( i==lineStart && z[i]=='\\' && z[i+1]=='#' ){
      /* keep lines starting with an escaped '#' (and unescape it) */
      copyStart = i + 1;
    }
    if( z[i]=='\n' ){
      if( doCopy ) blob_append(&temp,&pIn->aData[copyStart], i - copyStart + 1);
      lineStart = copyStart = i + 1;
      doCopy = 1;
    }
    i++;
  }
  /* Last line */
  if( doCopy ) blob_append(&temp, &pIn->aData[copyStart], i - copyStart);

  if( pOut==pIn ) blob_reset(pOut);
  *pOut = temp;
}

/*
** COMMAND: test-strip-comment-lines
**
** Usage: %fossil test-strip-comment-lines ?OPTIONS? INPUTFILE
**
** Read INPUTFILE and print it without comment lines (starting with '#').
** Keep lines starting with "\\#" but remove the initial backslash.
**
** This is used to test and debug the blob_strip_comment_lines() routine.
**
** Options:
**   -y|--side-by-side    Show diff of INPUTFILE and output side-by-side
**   -W|--width N         Width of lines in side-by-side diff
*/
void test_strip_comment_lines_cmd(void){
  Blob f, h;   /* unitialized */
  Blob out;
  DiffConfig dCfg;
  int sbs = 0;
  const char *z;
  int w = 0;

  memset(&dCfg, 0, sizeof(dCfg));

  sbs = find_option("side-by-side","y",0)!=0;
  if( (z = find_option("width","W",1))!=0 && (w = atoi(z))>0 ){
    dCfg.wColumn = w;
  }
  verify_all_options();
  if( g.argc!=3 ) usage("INPUTFILE");

  blob_read_from_file(&f, g.argv[2], ExtFILE);
  blob_strip_comment_lines(&f, &h);

  if ( !sbs ){
    blob_write_to_file(&h, "-");
  }else{
    blob_zero(&out);
    dCfg.nContext = -1;   /* whole content */
    dCfg.diffFlags = DIFF_SIDEBYSIDE | DIFF_CONTEXT_EX | DIFF_STRIP_EOLCR;
    diff_begin(&dCfg);
    text_diff(&f, &h, &out, &dCfg);
    blob_write_to_file(&out, "-");
    diff_end(&dCfg, 0);
  }
}

/*
** Ensure that the text in pBlob ends with '\n'
*/
void blob_add_final_newline(Blob *pBlob){
  if( pBlob->nUsed<=0 ) return;
  if( pBlob->aData[pBlob->nUsed-1]!='\n' ){
    blob_append_char(pBlob, '\n');
  }
}

/*
** Return true if the blob contains a valid UUID_SIZE-digit base16 identifier.
** Return true if the blob contains a valid base16 identifier artifact hash.
**
** The value returned is actually one of HNAME_SHA1 OR HNAME_K256 if the
** hash is valid.  Both of these are non-zero and therefore "true".
** If the hash is not valid, then HNAME_ERROR is returned, which is zero or
** false.
*/
int blob_is_uuid(Blob *pBlob){
int blob_is_hname(Blob *pBlob){
  return blob_size(pBlob)==UUID_SIZE
         && validate16(blob_buffer(pBlob), UUID_SIZE);
  return hname_validate(blob_buffer(pBlob), blob_size(pBlob));
}
int blob_is_uuid_n(Blob *pBlob, int n){
  return blob_size(pBlob)==n && validate16(blob_buffer(pBlob), n);

/*
** Return true if the blob contains a valid filename
*/
int blob_is_filename(Blob *pBlob){
  return file_is_simple_pathname(blob_str(pBlob), 1);
}

/*
** Return true if the blob contains a valid 32-bit integer.  Store
** the integer value in *pValue.
*/
int blob_is_int(Blob *pBlob, int *pValue){
  const char *z = blob_buffer(pBlob);
  int i, n, c, v;
  n = blob_size(pBlob);
  v = 0;
  for(i=0; i<n && (c = z[i])!=0 && isdigit(c); i++){
  for(i=0; i<n && (c = z[i])!=0 && c>='0' && c<='9'; i++){
    v = v*10 + c - '0';
  }
  if( i==n ){
    *pValue = v;
    return 1;
  }else{
    return 0;
  }
}

/*
** Return true if the blob contains a valid 64-bit integer.  Store
** the integer value in *pValue.
*/
int blob_is_int64(Blob *pBlob, sqlite3_int64 *pValue){
  const char *z = blob_buffer(pBlob);
  int i, n, c;
  sqlite3_int64 v;
  n = blob_size(pBlob);
  v = 0;
  for(i=0; i<n && (c = z[i])!=0 && c>='0' && c<='9'; i++){
    v = v*10 + c - '0';
  }
  if( i==n ){
    *pValue = v;
    return 1;
  }else{
    return 0;
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  int i;
  for(i=0; i<n; i++) blob_zero(&aBlob[i]);
}
void blobarray_reset(Blob *aBlob, int n){
  int i;
  for(i=0; i<n; i++) blob_reset(&aBlob[i]);
}
/*
** Allocate array of n blobs and initialize each element with `empty_blob`
*/
Blob* blobarray_new(int n){
  int i;
  Blob *aBlob = fossil_malloc(sizeof(Blob)*n);
  for(i=0; i<n; i++) aBlob[i] = empty_blob;
  return aBlob;
}
/*
** Free array of n blobs some of which may be empty (have NULL buffer)
*/
void blobarray_delete(Blob *aBlob, int n){
  int i;
  for(i=0; i<n; i++){
    if( blob_buffer(aBlob+i) ) blob_reset(aBlob+i);
  }
  fossil_free(aBlob);
}

/*
** Parse a blob into space-separated tokens.  Store each token in
** an element of the blobarray aToken[].  aToken[] is nToken elements in
** size.  Return the number of tokens seen.
*/
int blob_tokenize(Blob *pIn, Blob *aToken, int nToken){
  int i;
  for(i=0; i<nToken && blob_token(pIn, &aToken[i]); i++){}
  return i;
}

/*
** Do printf-style string rendering and append the results to a blob.
** Do printf-style string rendering and append the results to a blob.  Or
** if pBlob==0, do printf-style string rendering directly to stdout.
**
** The blob_appendf() version sets the BLOBFLAG_NotSQL bit in Blob.blobFlags
** whereas blob_append_sql() does not.
*/
void blob_appendf(Blob *pBlob, const char *zFormat, ...){
  va_list ap;
  va_start(ap, zFormat);
  vxprintf(pBlob, zFormat, ap);
  va_end(ap);
  if( pBlob ) pBlob->blobFlags |= BLOBFLAG_NotSQL;
}
void blob_append_sql(Blob *pBlob, const char *zFormat, ...){
  va_list ap;
  va_start(ap, zFormat);
  vxprintf(pBlob, zFormat, ap);
  va_end(ap);
}
void blob_vappendf(Blob *pBlob, const char *zFormat, va_list ap){
  vxprintf(pBlob, zFormat, ap);
}

/*
** Initalize a blob to the data on an input channel.  Return 
** Initialize a blob to the data on an input channel.  Return
** the number of bytes read into the blob.  Any prior content
** of the blob is discarded, not freed.
*/
int blob_read_from_channel(Blob *pBlob, FILE *in, int nToRead){
  size_t n;
  blob_zero(pBlob);
  if( nToRead<0 ){
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  }else{
    blob_resize(pBlob, nToRead);
    n = fread(blob_buffer(pBlob), 1, nToRead, in);
    blob_resize(pBlob, n);
  }
  return blob_size(pBlob);
}

/*
** Initialize a blob to the data read from HTTP input.  Return
** the number of bytes read into the blob.  Any prior content
** of the blob is discarded, not freed.
*/
int blob_read_from_cgi(Blob *pBlob, int nToRead){
  size_t n;
  blob_zero(pBlob);
  if( nToRead<0 ){
    char zBuf[10000];
    while( !cgi_feof() ){
      n = cgi_fread(zBuf, sizeof(zBuf));
      if( n>0 ){
        blob_append(pBlob, zBuf, n);
      }
    }
  }else{
    blob_resize(pBlob, nToRead);
    n = cgi_fread(blob_buffer(pBlob), nToRead);
    blob_resize(pBlob, n);
  }
  return blob_size(pBlob);
}

/*
** Initialize a blob to be the content of a file.  If the filename
** is blank or "-" then read from standard input.
**
** If zFilename is a symbolic link, behavior depends on the eFType
** parameter:
**
**    *  If eFType is ExtFILE or allow-symlinks is OFF, then the
**       pBlob is initialized to the *content* of the object to which
**       the zFilename symlink points.
**
**    *  If eFType is RepoFILE and allow-symlinks is ON, then the
**       pBlob is initialized to the *name* of the object to which
**       the zFilename symlink points.
**
** Any prior content of the blob is discarded, not freed.
**
** Return the number of bytes read.  Return -1 for an error.
** Return the number of bytes read. Calls fossil_fatal() on error (i.e.
** it exit()s and does not return).
*/
int blob_read_from_file(Blob *pBlob, const char *zFilename){
  int size, got;
sqlite3_int64 blob_read_from_file(
  Blob *pBlob,               /* The blob to be initialized */
  const char *zFilename,     /* Extract content from this file */
  int eFType                 /* ExtFILE or RepoFILE - see above */
){
  sqlite3_int64 size, got;
  FILE *in;
  if( zFilename==0 || zFilename[0]==0
        || (zFilename[0]=='-' && zFilename[1]==0) ){
    return blob_read_from_channel(pBlob, stdin, -1);
  }
  if( file_islink(zFilename) ){
    return blob_read_link(pBlob, zFilename);
  }
  size = file_size(zFilename);
  size = file_size(zFilename, eFType);
  blob_zero(pBlob);
  if( size<0 ){
    fossil_panic("no such file: %s", zFilename);
    fossil_fatal("no such file: %s", zFilename);
  }
  if( size==0 ){
    return 0;
  }
  blob_resize(pBlob, size);
  in = fopen(zFilename, "rb");
  in = fossil_fopen(zFilename, "rb");
  if( in==0 ){
    fossil_panic("cannot open %s for reading", zFilename);
    fossil_fatal("cannot open %s for reading", zFilename);
  }
  got = fread(blob_buffer(pBlob), 1, size, in);
  fclose(in);
  if( got<size ){
    blob_resize(pBlob, got);
  }
  return got;
}

/*
** Reads symlink destination path and puts int into blob.
** Any prior content of the blob is discarded, not freed.
**
** Returns length of destination path.
**
** On windows, zeros blob and returns 0.
*/
int blob_read_link(Blob *pBlob, const char *zFilename){
#if !defined(_WIN32)
  char zBuf[1024];
  ssize_t len = readlink(zFilename, zBuf, 1023);
  if( len < 0 ){
    fossil_fatal("cannot read symbolic link %s", zFilename);
  }
  zBuf[len] = 0;   /* null-terminate */
  blob_zero(pBlob);
  blob_appendf(pBlob, "%s", zBuf);
  return len;
#else
  blob_zero(pBlob);
  return 0;
#endif
}

/*
** Write the content of a blob into a file.
**
** If the filename is blank or "-" then write to standard output.
**
** This routine always assumes ExtFILE.  If zFilename is a symbolic link
** then the content is written into the object that symbolic link points
** to, not into the symbolic link itself.  This is true regardless of
** the allow-symlinks setting.
**
** Return the number of bytes written.
*/
int blob_write_to_file(Blob *pBlob, const char *zFilename){
  FILE *out;
  int needToClose;
  int wrote;
  int nWrote;

  if( zFilename[0]==0 || (zFilename[0]=='-' && zFilename[1]==0) ){
    blob_is_init(pBlob);
#if defined(_WIN32)
    nWrote = fossil_utf8_to_console(blob_buffer(pBlob), blob_size(pBlob), 0);
    if( nWrote>=0 ) return nWrote;
    out = stdout;
    fflush(stdout);
    needToClose = 0;
  }else{
    int i, nName;
    _setmode(_fileno(stdout), _O_BINARY);
#endif
    nWrote = fwrite(blob_buffer(pBlob), 1, blob_size(pBlob), stdout);
#if defined(_WIN32)
    char *zName, zBuf[1000];

    nName = strlen(zFilename);
    if( nName>=sizeof(zBuf) ){
    fflush(stdout);
    _setmode(_fileno(stdout), _O_TEXT);
#endif
      zName = mprintf("%s", zFilename);
    }else{
      zName = zBuf;
      strcpy(zName, zFilename);
  }else{
    file_mkfolder(zFilename, ExtFILE, 1, 0);
    out = fossil_fopen(zFilename, "wb");
    }
    nName = file_simplify_name(zName, nName);
    for(i=1; i<nName; i++){
      if( zName[i]=='/' ){
    if( out==0 ){
        zName[i] = 0;
#ifdef __MINGW32__
#if defined(_WIN32)
        /*
        ** On Windows, local path looks like: C:/develop/project/file.txt
        ** The if stops us from trying to create a directory of a drive letter
        ** C: in this example.
        */
        if( !(i==2 && zName[1]==':') ){
#endif
          if( file_mkdir(zName, 1) ){
            fossil_fatal_recursive("unable to create directory %s", zName);
            return 0;
          }
      const char *zReserved = file_is_win_reserved(zFilename);
      if( zReserved ){
        fossil_fatal("cannot open \"%s\" because \"%s\" is "
             "a reserved name on Windows", zFilename, zReserved);
      }
#ifdef __MINGW32__
        }
#endif
        zName[i] = '/';
      }
    }
    out = fopen(zName, "wb");
    if( out==0 ){
      fossil_fatal_recursive("unable to open file \"%s\" for writing", zName);
      fossil_fatal_recursive("unable to open file \"%s\" for writing",
                             zFilename);
      return 0;
    }
    needToClose = 1;
    if( zName!=zBuf ) free(zName);
  }
  blob_is_init(pBlob);
  wrote = fwrite(blob_buffer(pBlob), 1, blob_size(pBlob), out);
  if( needToClose ) fclose(out);
  if( wrote!=blob_size(pBlob) ){
    fossil_fatal_recursive("short write: %d of %d bytes to %s", wrote,
       blob_size(pBlob), zFilename);
  }
  return wrote;
    blob_is_init(pBlob);
    nWrote = fwrite(blob_buffer(pBlob), 1, blob_size(pBlob), out);
    fclose(out);
    if( nWrote!=(int)blob_size(pBlob) ){
      fossil_fatal_recursive("short write: %d of %d bytes to %s", nWrote,
         blob_size(pBlob), zFilename);
    }
  }
  return nWrote;
}

/*
** Compress a blob pIn.  Store the result in pOut.  It is ok for pIn and
** pOut to be the same blob. 
** 
** pOut to be the same blob.
**
** pOut must either be the same as pIn or else uninitialized.
*/
void blob_compress(Blob *pIn, Blob *pOut){
  unsigned int nIn = blob_size(pIn);
  unsigned int nOut = 13 + nIn + (nIn+999)/1000;
  unsigned long int nOut2;
  unsigned char *outBuf;
  Blob temp;
  blob_zero(&temp);
  blob_resize(&temp, nOut+4);
  outBuf = (unsigned char*)blob_buffer(&temp);
  outBuf[0] = nIn>>24 & 0xff;
  outBuf[1] = nIn>>16 & 0xff;
  outBuf[2] = nIn>>8 & 0xff;
  outBuf[3] = nIn & 0xff;
  nOut2 = (long int)nOut;
  compress(&outBuf[4], &nOut2,
           (unsigned char*)blob_buffer(pIn), blob_size(pIn));
  if( pOut==pIn ) blob_reset(pOut);
  blob_is_reset(pOut);
  assert_blob_is_reset(pOut);
  *pOut = temp;
  blob_resize(pOut, nOut2+4);
}

/*
** COMMAND: test-compress
**
** Usage: %fossil test-compress INPUTFILE OUTPUTFILE
**
** Run compression on INPUTFILE and write the result into OUTPUTFILE.
**
** This is used to test and debug the blob_compress() routine.
*/
void compress_cmd(void){
  Blob f;
  if( g.argc!=4 ) usage("INPUTFILE OUTPUTFILE");
  blob_read_from_file(&f, g.argv[2]);
  blob_read_from_file(&f, g.argv[2], ExtFILE);
  blob_compress(&f, &f);
  blob_write_to_file(&f, g.argv[3]);
}

/*
** Compress the concatenation of a blobs pIn1 and pIn2.  Store the result 
** in pOut. 
** 
** Compress the concatenation of a blobs pIn1 and pIn2.  Store the result
** in pOut.
**
** pOut must be either uninitialized or must be the same as either pIn1 or
** pIn2.
*/
void blob_compress2(Blob *pIn1, Blob *pIn2, Blob *pOut){
  unsigned int nIn = blob_size(pIn1) + blob_size(pIn2);
  unsigned int nOut = 13 + nIn + (nIn+999)/1000;
  unsigned char *outBuf;
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  stream.next_in = (unsigned char*)blob_buffer(pIn2);
  deflate(&stream, 0);
  deflate(&stream, Z_FINISH);
  blob_resize(&temp, stream.total_out + 4);
  deflateEnd(&stream);
  if( pOut==pIn1 ) blob_reset(pOut);
  if( pOut==pIn2 ) blob_reset(pOut);
  blob_is_reset(pOut);
  assert_blob_is_reset(pOut);
  *pOut = temp;
}

/*
** COMMAND: test-compress-2
**
** Usage: %fossil test-compress-2 IN1 IN2 OUT
**
** Read files IN1 and IN2, concatenate the content, compress the
** content, then write results into OUT.
**
** This is used to test and debug the blob_compress2() routine.
*/
void compress2_cmd(void){
  Blob f1, f2;
  if( g.argc!=5 ) usage("INPUTFILE1 INPUTFILE2 OUTPUTFILE");
  blob_read_from_file(&f1, g.argv[2]);
  blob_read_from_file(&f2, g.argv[3]);
  blob_read_from_file(&f1, g.argv[2], ExtFILE);
  blob_read_from_file(&f2, g.argv[3], ExtFILE);
  blob_compress2(&f1, &f2, &f1);
  blob_write_to_file(&f1, g.argv[4]);
}

/*
** Uncompress blob pIn and store the result in pOut.  It is ok for pIn and
** pOut to be the same blob.
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    return 0;
  }
  inBuf = (unsigned char*)blob_buffer(pIn);
  nOut = (inBuf[0]<<24) + (inBuf[1]<<16) + (inBuf[2]<<8) + inBuf[3];
  blob_zero(&temp);
  blob_resize(&temp, nOut+1);
  nOut2 = (long int)nOut;
  rc = uncompress((unsigned char*)blob_buffer(&temp), &nOut2, 
                  &inBuf[4], blob_size(pIn));
  rc = uncompress((unsigned char*)blob_buffer(&temp), &nOut2,
                  &inBuf[4], nIn - 4);
  if( rc!=Z_OK ){
    blob_reset(&temp);
    return 1;
  }
  blob_resize(&temp, nOut2);
  if( pOut==pIn ) blob_reset(pOut);
  blob_is_reset(pOut);
  assert_blob_is_reset(pOut);
  *pOut = temp;
  return 0;
}

/*
** COMMAND: test-uncompress
**
** Usage: %fossil test-uncompress IN OUT
**
** Read the content of file IN, uncompress that content, and write the
** result into OUT.  This command is intended for testing of the
** blob_compress() function.
*/
void uncompress_cmd(void){
  Blob f;
  if( g.argc!=4 ) usage("INPUTFILE OUTPUTFILE");
  blob_read_from_file(&f, g.argv[2]);
  blob_read_from_file(&f, g.argv[2], ExtFILE);
  blob_uncompress(&f, &f);
  blob_write_to_file(&f, g.argv[3]);
}

/*
** COMMAND: test-cycle-compress
**
** Compress and uncompress each file named on the command line.
** Verify that the original content is recovered.
*/
void test_cycle_compress(void){
  int i;
  Blob b1, b2, b3;
  for(i=2; i<g.argc; i++){
    blob_read_from_file(&b1, g.argv[i]);
    blob_read_from_file(&b1, g.argv[i], ExtFILE);
    blob_compress(&b1, &b2);
    blob_uncompress(&b2, &b3);
    if( blob_compare(&b1, &b3) ){
      fossil_panic("compress/uncompress cycle failed for %s", g.argv[i]);
      fossil_fatal("compress/uncompress cycle failed for %s", g.argv[i]);
    }
    blob_reset(&b1);
    blob_reset(&b2);
    blob_reset(&b3);
  }
  printf("ok\n");
  fossil_print("ok\n");
}

#ifdef __MINGW32__
/*
** Convert every \n character in the given blob into \r\n.
*/
void blob_add_cr(Blob *p){
  char *z = p->aData;
  int j   = p->nUsed;
  int i, n;
  for(i=n=0; i<j; i++){
    if( z[i]=='\n' ) n++;
  }
  j += n;
  if( j>=p->nAlloc ){
  if( j>=(int)(p->nAlloc) ){
    blob_resize(p, j);
    z = p->aData;
  }
  p->nUsed = j;
  z[j] = 0;
  while( j>i ){
    if( (z[--j] = z[--i]) =='\n' ){
      z[--j] = '\r';
    }
  }
}
#endif

/*
** Remove every \r character from the given blob.
** Remove every \r character from the given blob, replacing each one with
** a \n character if it was not already part of a \r\n pair.
*/
void blob_remove_cr(Blob *p){
void blob_to_lf_only(Blob *p){
  int i, j;
  char *z;
  blob_materialize(p);
  char *z = blob_materialize(p);
  z = p->aData;
  for(i=j=0; z[i]; i++){
    if( z[i]!='\r' ) z[j++] = z[i];
    else if( z[i+1]!='\n' ) z[j++] = '\n';
  }
  z[j] = 0;
  p->nUsed = j;
}

/*
** Convert blob from cp1252 to UTF-8. As cp1252 is a superset
** of iso8859-1, this is useful on UNIX as well.
**
** This table contains the character translations for 0x80..0xA0.
*/

static const unsigned short cp1252[32] = {
  0x20ac,   0x81, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021,
  0x02C6, 0x2030, 0x0160, 0x2039, 0x0152,   0x8D, 0x017D,   0x8F,
    0x90, 0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
   0x2DC, 0x2122, 0x0161, 0x203A, 0x0153,   0x9D, 0x017E, 0x0178
};

void blob_cp1252_to_utf8(Blob *p){
  unsigned char *z = (unsigned char *)p->aData;
  int j   = p->nUsed;
  int i, n;
  for(i=n=0; i<j; i++){
    if( z[i]>=0x80 ){
      if( (z[i]<0xa0) && (cp1252[z[i]&0x1f]>=0x800) ){
        n++;
      }
      n++;
    }
  }
  j += n;
  if( j>=(int)(p->nAlloc) ){
    blob_resize(p, j);
    z = (unsigned char *)p->aData;
  }
  p->nUsed = j;
  z[j] = 0;
  while( j>i ){
    if( z[--i]>=0x80 ){
      if( z[i]<0xa0 ){
        unsigned short sym = cp1252[z[i]&0x1f];
        if( sym>=0x800 ){
          z[--j] = 0x80 | (sym&0x3f);
          z[--j] = 0x80 | ((sym>>6)&0x3f);
          z[--j] = 0xe0 | (sym>>12);
        }else{
          z[--j] = 0x80 | (sym&0x3f);
          z[--j] = 0xc0 | (sym>>6);
}
        }
      }else{
        z[--j] = 0x80 | (z[i]&0x3f);
        z[--j] = 0xC0 | (z[i]>>6);
      }
    }else{
      z[--j] = z[i];
    }
  }
}

/*
** ASCII (for reference):
**    x0  x1  x2  x3  x4  x5  x6  x7  x8  x9  xa  xb  xc  xd  xe  xf
** 0x ^`  ^a  ^b  ^c  ^d  ^e  ^f  ^g  \b  \t  \n  ()  \f  \r  ^n  ^o
** 1x ^p  ^q  ^r  ^s  ^t  ^u  ^v  ^w  ^x  ^y  ^z  ^{  ^|  ^}  ^~  ^
** 2x ()  !   "   #   $   %   &   '   (   )   *   +   ,   -   .   /
** 3x 0   1   2   3   4   5   6   7   8   9   :   ;   <   =   >   ?
** 4x @   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
** 5x P   Q   R   S   T   U   V   W   X   Y   Z   [   \   ]   ^   _
** 6x `   a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
** 7x p   q   r   s   t   u   v   w   x   y   z   {   |   }   ~   ^_
*/

/*
** Meanings for bytes in a filename:
**
**    0      Ordinary character.  No encoding required
**    1      Needs to be escaped
**    2      Illegal character.  Do not allow in a filename
**    3      First byte of a 2-byte UTF-8
**    4      First byte of a 3-byte UTF-8
**    5      First byte of a 4-byte UTF-8
*/
static const char aSafeChar[256] = {
#ifdef _WIN32
/* Windows
** Prohibit:  all control characters, including tab, \r and \n.
** Escape:    (space) " # $ % & ' ( ) * ; < > ? [ ] ^ ` { | }
*/
/*  x0  x1  x2  x3  x4  x5  x6  x7  x8  x9  xa  xb  xc  xd  xe  xf  */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* 0x */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* 1x */
     1,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  0,  0,  0, /* 2x */
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  0,  1,  1, /* 3x */
     1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, /* 4x */
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  0,  1,  1,  0, /* 5x */
     1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, /* 6x */
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  0,  1, /* 7x */
#else
/* Unix
** Prohibit:  all control characters, including tab, \r and \n
** Escape:    (space) ! " # $ % & ' ( ) * ; < > ? [ \ ] ^ ` { | }
*/
/*  x0  x1  x2  x3  x4  x5  x6  x7  x8  x9  xa  xb  xc  xd  xe  xf  */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* 0x */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* 1x */
     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  0,  0,  0,  0,  0, /* 2x */
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  0,  1,  1, /* 3x */
     1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, /* 4x */
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  0, /* 5x */
     1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0, /* 6x */
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  0,  1, /* 7x */
#endif
    /* all bytes 0x80 through 0xbf are unescaped, being secondary
    ** bytes to UTF8 characters.  Bytes 0xc0 through 0xff are the
    ** first byte of a UTF8 character and do get escaped */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* 8x */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* 9x */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* ax */
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2, /* bx */
     3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3, /* cx */
     3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3, /* dx */
     4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4, /* ex */
     5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5  /* fx */
};

/*
** pBlob is a shell command under construction.  This routine safely
** appends filename argument zIn.
**
** The argument is escaped if it contains white space or other characters
** that need to be escaped for the shell.  If zIn contains characters
** that cannot be safely escaped, then throw a fatal error.
**
** If the isFilename argument is true, then the argument is expected
** to be a filename.  As shell commands commonly have command-line
** options that begin with "-" and since we do not want an attacker
** to be able to invoke these switches using filenames that begin
** with "-", if zIn begins with "-", prepend an additional "./"
** (or ".\\" on Windows).
*/
void blob_append_escaped_arg(Blob *pBlob, const char *zIn, int isFilename){
  int i;
  unsigned char c;
  int needEscape = 0;
  int n = blob_size(pBlob);
  char *z = blob_buffer(pBlob);

  /* Look for illegal byte-sequences and byte-sequences that require
  ** escaping.  No control-characters are allowed.  All spaces and
  ** non-ASCII unicode characters and some punctuation characters require
  ** escaping. */
  for(i=0; (c = (unsigned char)zIn[i])!=0; i++){
    if( aSafeChar[c] ){
      unsigned char x = aSafeChar[c];
      needEscape = 1;
      if( x==2 ){
        Blob bad;
        blob_token(pBlob, &bad);
        fossil_fatal("the [%s] argument to the \"%s\" command contains "
                     "a character (ascii 0x%02x) that is not allowed in "
                     "filename arguments",
                     zIn, blob_str(&bad), c);
      }else if( x>2 ){
        if( (zIn[i+1]&0xc0)!=0x80
         || (x>=4 && (zIn[i+2]&0xc0)!=0x80)
         || (x==5 && (zIn[i+3]&0xc0)!=0x80)
        ){
          Blob bad;
          blob_token(pBlob, &bad);
          fossil_fatal("the [%s] argument to the \"%s\" command contains "
                       "an illegal UTF-8 character",
                       zIn, blob_str(&bad));
        }
        i += x-2;
      }
    }
  }

  /* Separate from the previous argument by a space */
  if( n>0 && !fossil_isspace(z[n-1]) ){
    blob_append_char(pBlob, ' ');
  }

  /* Check for characters that need quoting */
  if( !needEscape ){
    if( isFilename && zIn[0]=='-' ){
      blob_append_char(pBlob, '.');
#if defined(_WIN32)
      blob_append_char(pBlob, '\\');
#else
      blob_append_char(pBlob, '/');
#endif
    }
    blob_append(pBlob, zIn, -1);
  }else{
#if defined(_WIN32)
    /* Quoting strategy for windows:
    ** Put the entire name inside of "...".  Any " characters within
    ** the name get doubled.
    */
    blob_append_char(pBlob, '"');
    if( isFilename && zIn[0]=='-' ){
      blob_append_char(pBlob, '.');
      blob_append_char(pBlob, '\\');
    }else if( zIn[0]=='/' ){
      blob_append_char(pBlob, '.');
    }
    for(i=0; (c = (unsigned char)zIn[i])!=0; i++){
      blob_append_char(pBlob, (char)c);
      if( c=='"' ) blob_append_char(pBlob, '"');
      if( c=='\\' ) blob_append_char(pBlob, '\\');
      if( c=='%' && isFilename ) blob_append(pBlob, "%cd:~,%", 7);
    }
    blob_append_char(pBlob, '"');
#else
    /* Quoting strategy for unix:
    ** If the name does not contain ', then surround the whole thing
    ** with '...'.   If there is one or more ' characters within the
    ** name, then put \ before each special character.
    */
    if( strchr(zIn,'\'') ){
      if( isFilename && zIn[0]=='-' ){
        blob_append_char(pBlob, '.');
        blob_append_char(pBlob, '/');
      }
      for(i=0; (c = (unsigned char)zIn[i])!=0; i++){
        if( aSafeChar[c] && aSafeChar[c]!=2 ) blob_append_char(pBlob, '\\');
        blob_append_char(pBlob, (char)c);
      }
    }else{
      blob_append_char(pBlob, '\'');
      if( isFilename && zIn[0]=='-' ){
        blob_append_char(pBlob, '.');
        blob_append_char(pBlob, '/');
      }
      blob_append(pBlob, zIn, -1);
      blob_append_char(pBlob, '\'');
    }
#endif
  }
}

/*
** COMMAND: test-escaped-arg
**
** Usage %fossil ARGS ...
**
** Run each argument through blob_append_escaped_arg() and show the
** result.  Append each argument to "fossil test-echo" and run that
** using fossil_system() to verify that it really does get escaped
** correctly.
**
** Other options:
**
**    --filename-args BOOL      Subsequent arguments are assumed to be
**                              filenames if BOOL is true, or not if BOOL
**                              is false.  Defaults on.
**
**    --hex HEX                 Skip the --hex flag and instead decode HEX
**                              into ascii.  This provides a way to insert
**                              unusual characters as an argument for testing.
**
**    --compare HEX ASCII       Verify that argument ASCII is identical to
**                              to decoded HEX.
**
**    --fuzz N                  Run N fuzz cases.  Each cases is a call
**                              to "fossil test-escaped-arg --compare HEX ARG"
**                              where HEX and ARG are the same argument.
**                              The argument is chosen at random.
*/
void test_escaped_arg_command(void){
  int i;
  Blob x;
  const char *zArg;
  int isFilename = 1;
  char zBuf[100];
  blob_init(&x, 0, 0);
  for(i=2; i<g.argc; i++){
    zArg = g.argv[i];
    if( fossil_strcmp(zArg, "--hex")==0 && i+1<g.argc ){
      size_t n = strlen(g.argv[++i]);
      if( n>=(sizeof(zBuf)-1)*2 ){
        fossil_fatal("Argument to --hex is too big");
      }
      memset(zBuf, 0, sizeof(zBuf));
      decode16((const unsigned char*)g.argv[i], (unsigned char*)zBuf, (int)n);
      zArg = zBuf;
    }else if( fossil_strcmp(zArg, "--compare")==0 && i+2<g.argc ){
      size_t n = strlen(g.argv[++i]);
      if( n>=(sizeof(zBuf)-1)*2 ){
        fossil_fatal("HEX argument to --compare is too big");
      }
      memset(zBuf, 0, sizeof(zBuf));
      if( decode16((const unsigned char*)g.argv[i], (unsigned char*)zBuf,
                   (int)n) ){
        fossil_fatal("HEX decode of %s failed", g.argv[i]);
      }
      zArg = g.argv[++i];
      if( zArg[0]=='-' ){
        fossil_fatal("filename argument \"%s\" begins with \"-\"", zArg);
      }
#ifdef _WIN32
      if( zBuf[0]=='-' && zArg[0]=='.' && zArg[1]=='\\' ) zArg += 2;
#else
      if( zBuf[0]=='-' && zArg[0]=='.' && zArg[1]=='/' ) zArg += 2;
#endif
      if( strcmp(zBuf, zArg)!=0 ){
        fossil_fatal("argument disagree: \"%s\" (%s) versus \"%s\"",
                     zBuf, g.argv[i-1], zArg);
      }
      continue;
    }else if( fossil_strcmp(zArg, "--fuzz")==0 && i+1<g.argc ){
      int n = atoi(g.argv[++i]);
      int j;
      for(j=0; j<n; j++){
        unsigned char m, k;
        int rc;
        unsigned char zWord[100];
        sqlite3_randomness(sizeof(m), &m);
        m = (m%40)+5;
        sqlite3_randomness(m, zWord); /* Between 5 and 45 bytes of randomness */
        for(k=0; k<m; k++){
          unsigned char cx = zWord[k];
          if( cx<0x20 || cx>=0x7f ){
            /* Translate illegal bytes into various non-ASCII unicode
            ** characters in order to exercise those code paths */
            unsigned int u;
            if( cx>=0x7f ){
              u = cx;
            }else if( cx>=0x08 ){
              u = 0x800 + cx;
            }else{
              u = 0x10000 + cx;
            }
            if( u<0x00080 ){
              zWord[k] = u & 0xFF;
            }else if( u<0x00800 ){
              zWord[k++] = 0xC0 + (u8)((u>>6)&0x1F);
              zWord[k] =   0x80 + (u8)(u & 0x3F);
            }else if( u<0x10000 ){
              zWord[k++] = 0xE0 + (u8)((u>>12)&0x0F);
              zWord[k++] = 0x80 + (u8)((u>>6) & 0x3F);
              zWord[k] =   0x80 + (u8)(u & 0x3F);
            }else{
              zWord[k++] = 0xF0 + (u8)((u>>18) & 0x07);
              zWord[k++] = 0x80 + (u8)((u>>12) & 0x3F);
              zWord[k++] = 0x80 + (u8)((u>>6) & 0x3F);
              zWord[k]   = 0x80 + (u8)(u & 0x3F);
            }
          }
        }
        zWord[k] = 0;
        encode16(zWord, (unsigned char*)zBuf, (int)k);
        blob_appendf(&x, "%$ test-escaped-arg --compare %s %$",
                         g.nameOfExe, zBuf,zWord);
        rc = fossil_system(blob_str(&x));
        if( rc ) fossil_fatal("failed test (%d): %s\n", rc, blob_str(&x));
        blob_reset(&x);
      }
      continue;
    }else if( fossil_strcmp(zArg, "--filename-args")==0 ){
       if( i+1<g.argc ){
         i++;
         isFilename = is_truth(g.argv[i]);
       }
       continue;
    }
    fossil_print("%3d [%s]: ", i, zArg);
    if( isFilename ){
      blob_appendf(&x, "%$ test-echo %$", g.nameOfExe, zArg);
    }else{
      blob_appendf(&x, "%$ test-echo %!$", g.nameOfExe, zArg);
    }
    fossil_print("%s\n", blob_str(&x));
    fossil_system(blob_str(&x));
    blob_reset(&x);
  }
}

/*
** A read(2)-like impl for the Blob class. Reads (copies) up to nLen
** bytes from pIn, starting at position pIn->iCursor, and copies them
** to pDest (which must be valid memory at least nLen bytes long).
**
** Returns the number of bytes read/copied, which may be less than
** nLen (if end-of-blob is encountered).
**
** Updates pIn's cursor.
**
** Returns 0 if pIn contains no data.
*/
unsigned int blob_read(Blob *pIn, void * pDest, unsigned int nLen ){
  if( !pIn->aData || (pIn->iCursor >= pIn->nUsed) ){
    return 0;
  } else if( (pIn->iCursor + nLen) > (unsigned int)pIn->nUsed ){
    nLen = (unsigned int) (pIn->nUsed - pIn->iCursor);
  }
  assert( pIn->nUsed > pIn->iCursor );
  assert( (pIn->iCursor+nLen)  <= pIn->nUsed );
  if( nLen ){
    memcpy( pDest, pIn->aData, nLen );
    pIn->iCursor += nLen;
  }
  return nLen;
}

/*
** Swaps the contents of the given blobs. Results
** are unspecified if either value is NULL or both
** point to the same blob.
*/
void blob_swap( Blob *pLeft, Blob *pRight ){
  Blob swap = *pLeft;
  *pLeft = *pRight;
  *pRight = swap;
}

/*
** Strip a possible byte-order-mark (BOM) from the blob. On Windows, if there
** is either no BOM at all or an (le/be) UTF-16 BOM, a conversion to UTF-8 is
** done.  If useMbcs is false and there is no BOM, the input string is assumed
** to be UTF-8 already, so no conversion is done.
*/
void blob_to_utf8_no_bom(Blob *pBlob, int useMbcs){
  char *zUtf8;
  int bomSize = 0;
  int bomReverse = 0;
  if( starts_with_utf8_bom(pBlob, &bomSize) ){
    struct Blob temp;
    zUtf8 = blob_str(pBlob) + bomSize;
    blob_zero(&temp);
    blob_append(&temp, zUtf8, -1);
    blob_swap(pBlob, &temp);
    blob_reset(&temp);
  }else if( starts_with_utf16_bom(pBlob, &bomSize, &bomReverse) ){
    zUtf8 = blob_buffer(pBlob);
    if( bomReverse ){
      /* Found BOM, but with reversed bytes */
      unsigned int i = blob_size(pBlob);
      while( i>1 ){
        /* swap bytes of unicode representation */
        char zTemp = zUtf8[--i];
        zUtf8[i] = zUtf8[i-1];
        zUtf8[--i] = zTemp;
      }
    }
    /* Make sure the blob contains two terminating 0-bytes */
    blob_append(pBlob, "\000\000", 3);
    zUtf8 = blob_str(pBlob) + bomSize;
    zUtf8 = fossil_unicode_to_utf8(zUtf8);
    blob_reset(pBlob);
    blob_set_dynamic(pBlob, zUtf8);
  }else if( useMbcs && invalid_utf8(pBlob) ){
#if defined(_WIN32) || defined(__CYGWIN__)
    zUtf8 = fossil_mbcs_to_utf8(blob_str(pBlob));
    blob_reset(pBlob);
    blob_append(pBlob, zUtf8, -1);
    fossil_mbcs_free(zUtf8);
#else
    blob_cp1252_to_utf8(pBlob);
#endif /* _WIN32 */
  }
}
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** This file contains code used to create new branches within a repository.
*/
#include "config.h"
#include "branch.h"
#include <assert.h>

/*
** Return true if zBr is the branch name associated with check-in with
** blob.uuid value of zUuid
*/
int branch_includes_uuid(const char *zBr, const char *zUuid){
  return db_exists(
    "SELECT 1 FROM tagxref, blob"
    " WHERE blob.uuid=%Q AND tagxref.rid=blob.rid"
    "   AND tagxref.value=%Q AND tagxref.tagtype>0"
    "   AND tagxref.tagid=%d",
    zUuid, zBr, TAG_BRANCH
  );
}

/*
** If RID refers to a check-in, return the name of the branch for that
** check-in.
**
** Space to hold the returned value is obtained from fossil_malloc()
** and should be freed by the caller.
*/
char *branch_of_rid(int rid){
  char *zBr = 0;
  static Stmt q;
  db_static_prepare(&q,
      "SELECT value FROM tagxref"
      " WHERE rid=$rid AND tagid=%d"
      " AND tagtype>0", TAG_BRANCH);
  db_bind_int(&q, "$rid", rid);
  if( db_step(&q)==SQLITE_ROW ){
    zBr = fossil_strdup(db_column_text(&q,0));
  }
  db_reset(&q);
  if( zBr==0 ){
    static char *zMain = 0;
    if( zMain==0 ) zMain = db_get("main-branch",0);
    zBr = fossil_strdup(zMain);
  }
  return zBr;
}

/*
**  fossil branch new    BRANCH-NAME ?ORIGIN-CHECK-IN? ?-bgcolor COLOR?
**  argv0  argv1  argv2  argv3       argv4
**  fossil branch new    NAME  BASIS ?OPTIONS?
**  argv0  argv1  argv2  argv3 argv4
*/
void branch_new(void){
  int rootid;            /* RID of the root check-in - what we branch off of */
  int brid;              /* RID of the branch check-in */
  int noSign;            /* True if the branch is unsigned */
  int i;                 /* Loop counter */
  char *zUuid;           /* Artifact ID of origin */
  Stmt q;                /* Generic query */
  const char *zBranch;   /* Name of the new branch */
  char *zDate;           /* Date that branch was created */
  char *zComment;        /* Check-in comment for the new branch */
  const char *zColor;    /* Color of the new branch */
  Blob branch;           /* manifest for the new branch */
  Blob parent;           /* root check-in manifest */
  Manifest mParent;      /* Parsed parent manifest */
  Manifest *pParent;     /* Parsed parent manifest */
  Blob mcksum;           /* Self-checksum on the manifest */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
  int isPrivate = 0;     /* True if the branch should be private */
 

  noSign = find_option("nosign","",0)!=0;
  if( find_option("nosync",0,0) ) g.fNoSync = 1;
  zColor = find_option("bgcolor","c",1);
  isPrivate = find_option("private",0,0)!=0;
  zDateOvrd = find_option("date-override",0,1);
  zUserOvrd = find_option("user-override",0,1);
  verify_all_options();
  if( g.argc<5 ){
    usage("new BRANCH-NAME CHECK-IN ?-bgcolor COLOR?");
    usage("new BRANCH-NAME BASIS ?OPTIONS?");
  }
  db_find_and_open_repository(1);  
  noSign = db_get_int("omitsign", 0)|noSign;
  
  db_find_and_open_repository(0, 0);
  noSign = db_get_boolean("omitsign", 0)|noSign;
  if( db_get_boolean("clearsign", 0)==0 ){ noSign = 1; }

  /* fossil branch new name */
  zBranch = g.argv[3];
  if( zBranch==0 || zBranch[0]==0 ){
    fossil_panic("branch name cannot be empty");
    fossil_fatal("branch name cannot be empty");
  }
  if( db_exists(
        "SELECT 1 FROM tagxref"
        " WHERE tagtype>0"
        "   AND tagid=(SELECT tagid FROM tag WHERE tagname='sym-%s')",
        zBranch)!=0 ){
    fossil_fatal("branch \"%s\" already exists", zBranch);
  if( branch_is_open(zBranch) ){
    fossil_fatal("an open branch named \"%s\" already exists", zBranch);
  }

  user_select();
  db_begin_transaction();
  rootid = name_to_rid(g.argv[4]);
  rootid = name_to_typed_rid(g.argv[4], "ci");
  if( rootid==0 ){
    fossil_fatal("unable to locate check-in off of which to branch");
  }

  pParent = manifest_get(rootid, CFTYPE_MANIFEST, 0);
  if( pParent==0 ){
    fossil_fatal("%s is not a valid check-in", g.argv[4]);
  }

  /* Create a manifest for the new branch */
  blob_zero(&branch);
  if( pParent->zBaseline ){
    blob_appendf(&branch, "B %s\n", pParent->zBaseline);
  }
  zComment = mprintf("Create new branch named \"%h\"", zBranch);
  blob_appendf(&branch, "C %F\n", zComment);
  zDate = db_text(0, "SELECT datetime('now')");
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  zDate[10] = 'T';
  blob_appendf(&branch, "D %s\n", zDate);

  /* Copy all of the content from the parent into the branch */
  content_get(rootid, &parent);
  manifest_parse(&mParent, &parent);
  if( mParent.type!=CFTYPE_MANIFEST ){
    fossil_fatal("%s is not a valid check-in", g.argv[4]);
  }
  for(i=0; i<mParent.nFile; ++i){
  for(i=0; i<pParent->nFile; ++i){
    if( mParent.aFile[i].zPerm[0] ){
      blob_appendf(&branch, "F %F %s %s\n",
                   mParent.aFile[i].zName,
                   mParent.aFile[i].zUuid,
                   mParent.aFile[i].zPerm);
    blob_appendf(&branch, "F %F", pParent->aFile[i].zName);
    if( pParent->aFile[i].zUuid ){
      blob_appendf(&branch, " %s", pParent->aFile[i].zUuid);
      if( pParent->aFile[i].zPerm && pParent->aFile[i].zPerm[0] ){
    }else{
      blob_appendf(&branch, "F %F %s\n",
        blob_appendf(&branch, " %s", pParent->aFile[i].zPerm);
                   mParent.aFile[i].zName,
                   mParent.aFile[i].zUuid);
    }
  }
      }
    }
    blob_append(&branch, "\n", 1);
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rootid);
  blob_appendf(&branch, "P %s\n", zUuid);
  if( pParent->zRepoCksum ){
  blob_appendf(&branch, "R %s\n", mParent.zRepoCksum);
  manifest_clear(&mParent);
    blob_appendf(&branch, "R %s\n", pParent->zRepoCksum);
  }
  manifest_destroy(pParent);

  /* Add the symbolic branch name and the "branch" tag to identify
  ** this as a new branch */
  if( content_is_private(rootid) ) isPrivate = 1;
  if( zColor!=0 ){
    blob_appendf(&branch, "T *bgcolor * %F\n", zColor);
  }
  blob_appendf(&branch, "T *branch * %F\n", zBranch);
  blob_appendf(&branch, "T *sym-%F *\n", zBranch);
  if( isPrivate ){
    noSign = 1;
  }

  /* Cancel all other symbolic tags */
  db_prepare(&q,
      "SELECT tagname FROM tagxref, tag"
      " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
      "   AND tagtype>0 AND tagname GLOB 'sym-*'"
      " ORDER BY tagname",
      rootid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTag = db_column_text(&q, 0);
    blob_appendf(&branch, "T -%F *\n", zTag);
  }
  db_finalize(&q);
  
  blob_appendf(&branch, "U %F\n", g.zLogin);

  blob_appendf(&branch, "U %F\n", zUserOvrd ? zUserOvrd : login_name());
  md5sum_blob(&branch, &mcksum);
  blob_appendf(&branch, "Z %b\n", &mcksum);
  if( !noSign && clearsign(&branch, &branch) ){
    Blob ans;
    blob_zero(&ans);
    char cReply;
    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
    cReply = blob_str(&ans)[0];
    if( cReply!='y' && cReply!='Y'){
      db_end_transaction(1);
      exit(1);
      fossil_exit(1);
    }
  }

  brid = content_put(&branch, 0, 0);
  brid = content_put_ex(&branch, 0, 0, 0, isPrivate);
  if( brid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
    fossil_fatal("trouble committing manifest: %s", g.zErrMsg);
  }
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", brid);
  if( manifest_crosslink(brid, &branch)==0 ){
    fossil_panic("unable to install new manifest");
  db_add_unsent(brid);
  if( manifest_crosslink(brid, &branch, MC_PERMIT_HOOKS)==0 ){
    fossil_fatal("%s", g.zErrMsg);
  }
  assert( blob_is_reset(&branch) );
  content_deltify(rootid, brid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", brid);
  printf("New branch: %s\n", zUuid);
  content_deltify(rootid, &brid, 1, 0);
  zUuid = rid_to_uuid(brid);
  fossil_print("New branch: %s\n", zUuid);
  if( g.argc==3 ){
    printf(
    fossil_print(
      "\n"
      "Note: the local check-out has not been updated to the new\n"
      "      branch.  To begin working on the new branch, do this:\n"
      "\n"
      "      %s update %s\n",
      g.argv[0], zBranch
    );
  }


  /* Commit */
  db_end_transaction(0);
  

  /* Do an autosync push, if requested */
  if( !isPrivate ) autosync_loop(SYNC_PUSH, 0, "branch");
}
  autosync(AUTOSYNC_PUSH);

/*
** Create a TEMP table named "tmp_brlist" with 7 columns:
**
**      name           Name of the branch
**      mtime          Time of last check-in on this branch
**      isclosed       True if the branch is closed
**      mergeto        Another branch this branch was merged into
**      nckin          Number of checkins on this branch
**      ckin           Hash of the last check-in on this branch
**      isprivate      True if the branch is private
**      bgclr          Background color for this branch
*/
static const char createBrlistQuery[] =
@ CREATE TEMP TABLE IF NOT EXISTS tmp_brlist AS
@ SELECT
@   tagxref.value AS name,
@   max(event.mtime) AS mtime,
@   EXISTS(SELECT 1 FROM tagxref AS tx
@           WHERE tx.rid=tagxref.rid
@             AND tx.tagid=(SELECT tagid FROM tag WHERE tagname='closed')
@             AND tx.tagtype>0) AS isclosed,
@   (SELECT tagxref.value
@      FROM plink CROSS JOIN tagxref
@    WHERE plink.pid=event.objid
@       AND tagxref.rid=plink.cid
@      AND tagxref.tagid=(SELECT tagid FROM tag WHERE tagname='branch')
@      AND tagtype>0) AS mergeto,
@   count(*) AS nckin,
@   (SELECT uuid FROM blob WHERE rid=tagxref.rid) AS ckin,
@   event.bgcolor AS bgclr,
@   EXISTS(SELECT 1 FROM private WHERE rid=tagxref.rid) AS isprivate
@  FROM tagxref, tag, event
@ WHERE tagxref.tagid=tag.tagid
@   AND tagxref.tagtype>0
@   AND tag.tagname='branch'
@   AND event.objid=tagxref.rid
@ GROUP BY 1;
;

/* Call this routine to create the TEMP table */
static void brlist_create_temp_table(void){
  db_exec_sql(createBrlistQuery);
}


#if INTERFACE
/*
** Allows bits in the mBplqFlags parameter to branch_prepare_list_query().
*/
#define BRL_CLOSED_ONLY      0x001 /* Show only closed branches */
#define BRL_OPEN_ONLY        0x002 /* Show only open branches */
#define BRL_BOTH             0x003 /* Show both open and closed branches */
#define BRL_OPEN_CLOSED_MASK 0x003
#define BRL_ORDERBY_MTIME    0x004 /* Sort by MTIME. (otherwise sort by name)*/
#define BRL_REVERSE          0x008 /* Reverse the sort order */
#define BRL_PRIVATE          0x010 /* Show only private branches */
#define BRL_MERGED           0x020 /* Show only merged branches */
#define BRL_UNMERGED         0x040 /* Show only unmerged branches */
#define BRL_LIST_USERS       0x080 /* Populate list of users participating */

#endif /* INTERFACE */

/*
** Prepare a query that will list branches.
**
** If the BRL_ORDERBY_MTIME flag is set and nLimitMRU ("Limit Most Recently Used
** style") is a non-zero number, the result is limited to nLimitMRU entries, and
** the BRL_REVERSE flag is applied in an outer query after processing the limit,
** so that it's possible to generate short lists with the most recently modified
** branches sorted chronologically in either direction, as does the "branch lsh"
** command.
** For other cases, the outer query is also generated, but works as a no-op. The
** code to build the outer query is marked with *//* OUTER QUERY *//* comments.
*/
void branch_prepare_list_query(
  Stmt *pQuery,
  int brFlags,
  const char *zBrNameGlob,
  int nLimitMRU,
  const char *zUser
){
  Blob sql;
  blob_init(&sql, 0, 0);
  brlist_create_temp_table();
  /* Ignore nLimitMRU if no chronological sort requested. */
  if( (brFlags & BRL_ORDERBY_MTIME)==0 ) nLimitMRU = 0;
  /* Negative values for nLimitMRU also mean "no limit". */
  if( nLimitMRU<0 ) nLimitMRU = 0;
  /* OUTER QUERY */
  blob_append_sql(&sql,"SELECT name, isprivate, mergeto,");
  if( brFlags & BRL_LIST_USERS ){
    blob_append_sql(&sql,
      " (SELECT group_concat(user) FROM ("
      "     SELECT DISTINCT * FROM ("
      "         SELECT coalesce(euser,user) AS user"
      "           FROM event"
      "          WHERE type='ci' AND objid IN ("
      "             SELECT rid FROM tagxref WHERE value=name)"
      "          ORDER BY 1)))"
    );
  }else{
    blob_append_sql(&sql, " NULL");
  }
  blob_append_sql(&sql," FROM (");
  /* INNER QUERY */
  switch( brFlags & BRL_OPEN_CLOSED_MASK ){
    case BRL_CLOSED_ONLY: {
      blob_append_sql(&sql,
        "SELECT name, isprivate, mtime, mergeto FROM tmp_brlist WHERE isclosed"
      );
      break;
    }
    case BRL_BOTH: {
      blob_append_sql(&sql,
        "SELECT name, isprivate, mtime, mergeto FROM tmp_brlist WHERE 1"
      );
      break;
    }
    case BRL_OPEN_ONLY: {
      blob_append_sql(&sql,
        "SELECT name, isprivate, mtime, mergeto FROM tmp_brlist "
        "  WHERE NOT isclosed"
      );
      break;
    }
  }
  if( brFlags & BRL_PRIVATE ) blob_append_sql(&sql, " AND isprivate");
  if( brFlags & BRL_MERGED ) blob_append_sql(&sql, " AND mergeto IS NOT NULL");
  if( zBrNameGlob ) blob_append_sql(&sql, " AND (name GLOB %Q)", zBrNameGlob);
  if( zUser && zUser[0] ) blob_append_sql(&sql,
    " AND EXISTS (SELECT 1 FROM event WHERE type='ci' AND (user=%Q OR euser=%Q)"
    "      AND objid in (SELECT rid FROM tagxref WHERE value=tmp_brlist.name))",
    zUser, zUser
  );
  if( brFlags & BRL_ORDERBY_MTIME ){
    blob_append_sql(&sql, " ORDER BY -mtime");
  }else{
    blob_append_sql(&sql, " ORDER BY name COLLATE nocase");
  }
  if( brFlags & BRL_REVERSE && !nLimitMRU ){
    blob_append_sql(&sql," DESC");
  }
  if( nLimitMRU ){
    blob_append_sql(&sql," LIMIT %d",nLimitMRU);
  }
  blob_append_sql(&sql,")"); /* OUTER QUERY */
  if( brFlags & BRL_REVERSE && nLimitMRU ){
    blob_append_sql(&sql," ORDER BY mtime"); /* OUTER QUERY */
  }
  db_prepare_blob(pQuery, &sql);
  blob_reset(&sql);
}

/*
** If the branch named in the argument is open, return a RID for one of
** the open leaves of that branch.  If the branch does not exists or is
** closed, return 0.
*/
int branch_is_open(const char *zBrName){
  return db_int(0,
    "SELECT rid FROM tagxref AS ox"
    " WHERE tagid=%d"
    "   AND tagtype=2"
    "   AND value=%Q"
    "   AND rid IN leaf"
    "   AND NOT EXISTS(SELECT 1 FROM tagxref AS ix"
                      " WHERE tagid=%d"
                      "   AND tagtype=1"
                      "   AND ox.rid=ix.rid)",
    TAG_BRANCH, zBrName, TAG_CLOSED
  );
}

/*
** Internal helper for branch_cmd_close() and friends. Adds a row to
** the to the brcmdtag TEMP table, initializing that table if needed,
** holding a pending tag for the given blob.rid (which is assumed to
** be valid). zTag must be a fully-formed tag name, including the
** (+,-,*) prefix character.
**
*/
static void branch_cmd_tag_add(int rid, const char *zTag){
  static int once = 0;
  assert(zTag && ('+'==zTag[0] || '-'==zTag[0] || '*'==zTag[0]));
  if(0==once++){
    db_multi_exec("CREATE TEMP TABLE brcmdtag("
                  "rid INTEGER UNIQUE ON CONFLICT IGNORE,"
                  "tag TEXT NOT NULL"
                  ")");
  }
  db_multi_exec("INSERT INTO brcmdtag(rid,tag) VALUES(%d,%Q)",
                rid, zTag);
}

/*
** Internal helper for branch_cmd_close() and friends. Creates and
** saves a control artifact of tag changes stored via
** branch_cmd_tag_add(). Fails fatally on error, returns 0 if it saves
** an artifact, and a negative value if it does not save anything
** because no tags were queued up. A positive return value is reserved
** for potential future semantics.
**
** This function asserts that a transaction is underway and it ends
** the transaction, committing or rolling back, as appropriate.
*/
static int branch_cmd_tag_finalize(int fDryRun /* roll back if true */,
                                   int fVerbose /* output extra info */,
                                   const char *zDateOvrd /* --date-override */,
                                   const char *zUserOvrd /* --user-override */){
  int nTags = 0;
  Stmt q = empty_Stmt;
  Blob manifest = empty_blob;
  int doRollback = fDryRun!=0;

  assert(db_transaction_nesting_depth() > 0);
  if(!db_table_exists("temp","brcmdtag")){
    fossil_warning("No tags added - nothing to do.");
    db_end_transaction(1);
    return -1;
  }
  db_prepare(&q, "SELECT b.uuid, t.tag "
             "FROM blob b, brcmdtag t "
             "WHERE b.rid=t.rid "
             "ORDER BY t.tag, b.uuid");
  blob_appendf(&manifest, "D %z\n",
               date_in_standard_format( zDateOvrd ? zDateOvrd : "now"));
  while(SQLITE_ROW==db_step(&q)){
    const char * zHash = db_column_text(&q, 0);
    const char * zTag = db_column_text(&q, 1);
    blob_appendf(&manifest, "T %s %s\n", zTag, zHash);
    ++nTags;
  }
  if(!nTags){
    fossil_warning("No tags added - nothing to do.");
    db_end_transaction(1);
    blob_reset(&manifest);
    return -1;
  }
  user_select();
  blob_appendf(&manifest, "U %F\n", zUserOvrd ? zUserOvrd : login_name());
  { /* Z-card and save artifact */
    int newRid;
    Blob cksum = empty_blob;
    md5sum_blob(&manifest, &cksum);
    blob_appendf(&manifest, "Z %b\n", &cksum);
    blob_reset(&cksum);
    if(fDryRun && fVerbose){
      fossil_print("Dry-run mode: will roll back new artifact:\n%b",
                   &manifest);
      /* Run through the saving steps, though, noting that doing so
      ** will clear out &manifest, which is why we output it here
      ** instead of after saving. */
    }
    newRid = content_put(&manifest);
    if(0==newRid){
      fossil_fatal("Problem saving new artifact: %s\n%b",
                   g.zErrMsg, &manifest);
    }else if(manifest_crosslink(newRid, &manifest, 0)==0){
      fossil_fatal("Crosslinking error: %s", g.zErrMsg);
    }
    fossil_print("Saved new control artifact %z (RID %d).\n",
                 rid_to_uuid(newRid), newRid);
    db_add_unsent(newRid);
    if(fDryRun){
      fossil_print("Dry-run mode: rolling back new artifact.\n");
      assert(0!=doRollback);
    }
  }
  db_multi_exec("DROP TABLE brcmdtag");
  blob_reset(&manifest);
  db_end_transaction(doRollback);
  return 0;
}

/*
** Internal helper for branch_cmd_close() and friends. zName is a
** symbolic check-in name. Returns the blob.rid of the check-in or fails
** fatally if the name does not resolve unambiguously.  If zUuid is
** not NULL, *zUuid is set to the resolved blob.uuid and must be freed
** by the caller via fossil_free().
*/
static int branch_resolve_name(char const *zName, char **zUuid){
  const int rid = name_to_uuid2(zName, "ci", zUuid);
  if(0==rid){
    fossil_fatal("Cannot resolve name: %s", zName);
  }else if(rid<0){
    fossil_fatal("Ambiguous name: %s", zName);
  }
  return rid;
}

/*
** Implementation of (branch hide/unhide) subcommands. nStartAtArg is
** the g.argv index to start reading branch/check-in names. fHide is
** true for hiding, false for unhiding. Fails fatally on error.
*/
static void branch_cmd_hide(int nStartAtArg, int fHide){
  int argPos = nStartAtArg;    /* g.argv pos with first branch/ci name */
  char * zUuid = 0;            /* Resolved branch UUID. */
  const int fVerbose = find_option("verbose","v",0)!=0;
  const int fDryRun = find_option("dry-run","n",0)!=0;
  const char *zDateOvrd = find_option("date-override",0,1);
  const char *zUserOvrd = find_option("user-override",0,1);

  verify_all_options();
  db_begin_transaction();
  for( ; argPos < g.argc; fossil_free(zUuid), ++argPos ){
    const char * zName = g.argv[argPos];
    const int rid = branch_resolve_name(zName, &zUuid);
    const int isHidden = rid_has_tag(rid, TAG_HIDDEN);
    /* Potential TODO: check for existing 'hidden' flag and skip this
    ** entry if it already has (if fHide) or does not have (if !fHide)
    ** that tag. FWIW, /ci_edit does not do so. */
    if(fHide && isHidden){
      fossil_warning("Skipping hidden check-in %s: %s.", zName, zUuid);
      continue;
    }else if(!fHide && !isHidden){
      fossil_warning("Skipping non-hidden check-in %s: %s.", zName, zUuid);
      continue;
    }
    branch_cmd_tag_add(rid, fHide ? "*hidden" : "-hidden");
    if(fVerbose!=0){
      fossil_print("%s check-in [%s] %s\n",
                   fHide ? "Hiding" : "Unhiding",
                   zName, zUuid);
    }
  }
  branch_cmd_tag_finalize(fDryRun, fVerbose, zDateOvrd, zUserOvrd);
}

/*
** Implementation of (branch close|reopen) subcommands. nStartAtArg is
** the g.argv index to start reading branch/check-in names. The given
** checkins are closed if fClose is true, else their "closed" tag (if
** any) is cancelled. Fails fatally on error.
*/
static void branch_cmd_close(int nStartAtArg, int fClose){
  int argPos = nStartAtArg;    /* g.argv pos with first branch name */
  char * zUuid = 0;            /* Resolved branch UUID. */
  const int fVerbose = find_option("verbose","v",0)!=0;
  const int fDryRun = find_option("dry-run","n",0)!=0;
  const char *zDateOvrd = find_option("date-override",0,1);
  const char *zUserOvrd = find_option("user-override",0,1);

  verify_all_options();
  db_begin_transaction();
  for( ; argPos < g.argc; fossil_free(zUuid), ++argPos ){
    const char * zName = g.argv[argPos];
    const int rid = branch_resolve_name(zName, &zUuid);
    const int isClosed = leaf_is_closed(rid);
    if(!is_a_leaf(rid)){
      /* This behaviour is different from /ci_edit closing, where
      ** is_a_leaf() adds a "+" tag and !is_a_leaf() adds a "*"
      ** tag. We might want to change this to match for consistency's
      ** sake, but it currently seems unnecessary to close/re-open a
      ** non-leaf. */
      fossil_warning("Skipping non-leaf [%s] %s", zName, zUuid);
      continue;
    }else if(fClose && isClosed){
      fossil_warning("Skipping closed leaf [%s] %s", zName, zUuid);
      continue;
    }else if(!fClose && !isClosed){
      fossil_warning("Skipping non-closed leaf [%s] %s", zName, zUuid);
      continue;
    }
    branch_cmd_tag_add(rid, fClose ? "+closed" : "-closed");
    if(fVerbose!=0){
      fossil_print("%s branch [%s] %s\n",
                   fClose ? "Closing" : "Re-opening",
                   zName, zUuid);
    }
  }
  branch_cmd_tag_finalize(fDryRun, fVerbose, zDateOvrd, zUserOvrd);
}

/*
** COMMAND: branch
**
** Usage: %fossil branch SUBCOMMAND ... ?-R|--repository FILE?
** Usage: %fossil branch SUBCOMMAND ... ?OPTIONS?
**
** Run various subcommands to manage branches of the open repository or
** of the repository identified by the -R or --repository option.
**
**    %fossil branch new BRANCH-NAME BASIS ?-bgcolor COLOR? 
** >  fossil branch close|reopen ?OPTIONS? BRANCH-NAME ?...BRANCH-NAMES?
**
**       Adds or cancels the "closed" tag to one or more branches.
**       It accepts arbitrary unambiguous symbolic names but
**       will only resolve check-in names and skips any which resolve
**        Create a new branch BRANCH-NAME off of check-in BASIS.
**        You can optionally give the branch a default color.
**       to non-leaf check-ins.
**
**       Options:
**         -n|--dry-run          Do not commit changes, but dump artifact
**                               to stdout
**         -v|--verbose          Output more information
**         --date-override DATE  DATE to use instead of 'now'
**         --user-override USER  USER to use instead of the current default
**
**    %fossil branch list
** >  fossil branch current
**
**        Print the name of the branch for the current check-out
**
** >  fossil branch hide|unhide ?OPTIONS? BRANCH-NAME ?...BRANCH-NAMES?
**
**       Adds or cancels the "hidden" tag for the specified branches or
**       or check-in IDs. Accepts the same options as the close
**       subcommand.
**
** >  fossil branch info BRANCH-NAME
**
**        Print information about a branch
**
** >  fossil branch list|ls ?OPTIONS? ?GLOB?
** >  fossil branch lsh ?OPTIONS? ?LIMIT?
**
**        List all branches
**        List all branches.
**
**        Options:
**          -a|--all         List all branches.  Default show only open branches
**          -c|--closed      List closed branches
**          -m|--merged      List branches merged into the current branch
**          -M|--unmerged    List branches not merged into the current branch
**          -p               List only private branches
**          -r               Reverse the sort order
**          -t               Show recently changed branches first
**          --self           List only branches where you participate
**          --username USER  List only branches where USER participate
**          --users N        List up to N users partipiating
**
**        The current branch is marked with an asterisk.  Private branches are
**        marked with a hash sign.
**
**        If GLOB is given, show only branches matching the pattern.
**
**        The "lsh" variant of this subcommand shows recently changed branches,
**        and accepts an optional LIMIT argument (defaults to 5) to cap output,
**        but no GLOB argument.  All other options are supported, with -t being
**        an implied no-op.
**
** >  fossil branch new BRANCH-NAME BASIS ?OPTIONS?
**
**        Create a new branch BRANCH-NAME off of check-in BASIS.
**
**        Options:
**          --private             Branch is private (i.e., remains local)
**          --bgcolor COLOR       Use COLOR instead of automatic background
**          --nosign              Do not sign the manifest for the check-in
**                                that creates this branch
**          --nosync              Do not auto-sync prior to creating the branch
**          --date-override DATE  DATE to use instead of 'now'
**          --user-override USER  USER to use instead of the current default
**
**        DATE may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
**        year-month-day form, it may be truncated, the "T" may be
**        replaced by a space, and it may also name a timezone offset
**        from UTC as "-HH:MM" (westward) or "+HH:MM" (eastward).
**        Either no timezone suffix or "Z" means UTC.
**
** Options:
**    -R|--repository REPO       Run commands on repository REPO
*/
void branch_cmd(void){
  int n;
  const char *zCmd = "list";
  db_find_and_open_repository(1);
  if( g.argc<3 ){
    usage("new|list ...");
  }
  n = strlen(g.argv[2]);
  if( n>=2 && strncmp(g.argv[2],"new",n)==0 ){
    branch_new();
  }else if( n>=2 && strncmp(g.argv[2],"list",n)==0 ){
  db_find_and_open_repository(0, 0);
  if( g.argc>=3 ) zCmd = g.argv[2];
  n = strlen(zCmd);
  if( strncmp(zCmd,"current",n)==0 ){
    if( !g.localOpen ){
      fossil_fatal("not within an open check-out");
    }else{
      int vid = db_lget_int("checkout", 0);
      char *zCurrent = db_text(0, "SELECT value FROM tagxref"
                            " WHERE rid=%d AND tagid=%d", vid, TAG_BRANCH);
      fossil_print("%s\n", zCurrent);
      fossil_free(zCurrent);
    }
  }else if( strncmp(zCmd,"info",n)==0 ){
    int i;
    for(i=3; i<g.argc; i++){
      const char *zBrName = g.argv[i];
      int rid = branch_is_open(zBrName);
      if( rid==0 ){
        fossil_print("%s: not an open branch\n", zBrName);
      }else{
        const char *zUuid = db_text(0,"SELECT uuid FROM blob WHERE rid=%d",rid);
        const char *zDate = db_text(0,
          "SELECT datetime(mtime,toLocal()) FROM event"
          " WHERE objid=%d", rid);
        fossil_print("%s: open as of %s on %.16s\n", zBrName, zDate, zUuid);
      }
    }
  }else if( strncmp(zCmd,"list",n)==0 ||
            strncmp(zCmd, "ls", n)==0 ||
            strcmp(zCmd, "lsh")==0 ){
    Stmt q;
    Blob txt = empty_blob;
    int vid;
    char *zCurrent = 0;
    const char *zBrNameGlob = 0;
    const char *zUser = find_option("username",0,1);
    const char *zUsersOpt = find_option("users",0,1);
    int nUsers = zUsersOpt ? atoi(zUsersOpt) : 0;
    int nLimit = 0;
    int brFlags = BRL_OPEN_ONLY;
    if( find_option("all","a",0)!=0 ) brFlags = BRL_BOTH;
    if( find_option("closed","c",0)!=0 ) brFlags = BRL_CLOSED_ONLY;
    if( find_option("t",0,0)!=0 ) brFlags |= BRL_ORDERBY_MTIME;
    if( find_option("r",0,0)!=0 ) brFlags |= BRL_REVERSE;
    if( find_option("p",0,0)!=0 ) brFlags |= BRL_PRIVATE;
    if( find_option("merged","m",0)!=0 ) brFlags |= BRL_MERGED;
    if( find_option("unmerged","M",0)!=0 ) brFlags |= BRL_UNMERGED;
    if( find_option("self",0,0)!=0 ){
      if( zUser ){
        fossil_fatal("flags --username and --self are mutually exclusive");
      }
      user_select();
      zUser = login_name();
    }
    verify_all_options();
    db_prepare(&q,
      "%s"
      "   AND blob.rid IN (SELECT rid FROM tagxref"
      "                     WHERE tagid=%d AND tagtype==2 AND srcid!=0)"

    if ( (brFlags & BRL_MERGED) && (brFlags & BRL_UNMERGED) ){
      fossil_fatal("flags --merged and --unmerged are mutually exclusive");
    }
    if( zUsersOpt ){
      if( nUsers <= 0) fossil_fatal("With --users, N must be positive");
      brFlags |= BRL_LIST_USERS;
    }
    if( strcmp(zCmd, "lsh")==0 ){
      nLimit = 5;
      if( g.argc>4 || (g.argc==4 && (nLimit = atoi(g.argv[3]))==0) ){
        fossil_fatal("the lsh subcommand allows one optional numeric argument");
      }
      brFlags |= BRL_ORDERBY_MTIME;
    }else{
      if( g.argc >= 4 ) zBrNameGlob = g.argv[3];
    }

    if( g.localOpen ){
      vid = db_lget_int("checkout", 0);
      zCurrent = db_text(0, "SELECT value FROM tagxref"
                            " WHERE rid=%d AND tagid=%d", vid, TAG_BRANCH);
      " ORDER BY event.mtime DESC",
      timeline_query_for_tty(), TAG_BRANCH
    );
    print_timeline(&q, 2000);
    }
    branch_prepare_list_query(&q, brFlags, zBrNameGlob, nLimit, zUser);
    blob_init(&txt, 0, 0);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zBr = db_column_text(&q, 0);
      int isPriv = db_column_int(&q, 1)==1;
      const char *zMergeTo = db_column_text(&q, 2);
      int isCur = zCurrent!=0 && fossil_strcmp(zCurrent,zBr)==0;
      const char *zUsers = db_column_text(&q, 3);
      if( (brFlags & BRL_MERGED) && fossil_strcmp(zCurrent,zMergeTo)!=0 ){
        continue;
      }
      if( (brFlags & BRL_UNMERGED) && (fossil_strcmp(zCurrent,zMergeTo)==0
          || isCur) ){
        continue;
      }
      blob_appendf(&txt, "%s%s%s",
        ( (brFlags & BRL_PRIVATE) ? " " : ( isPriv ? "#" : " ") ),
        (isCur ? "* " : "  "), zBr);
      if( nUsers ){
        char c;
        const char *cp;
        const char *pComma = 0;
        int commas = 0;
        for( cp = zUsers; ( c = *cp ) != 0; cp++ ){
          if( c == ',' ){
            commas++;
            if( commas == nUsers ) pComma = cp;
          }
        }
        if( pComma ){
          blob_appendf(&txt, " (%.*s,... %i more)",
            pComma - zUsers, zUsers, commas + 1 - nUsers);
        }else{
          blob_appendf(&txt, " (%s)", zUsers);
        }
      }
      fossil_print("%s\n", blob_str(&txt));
      blob_reset(&txt);
    }
    db_finalize(&q);
  }else if( strncmp(zCmd,"new",n)==0 ){
    branch_new();
  }else if( strncmp(zCmd,"close",5)==0 ){
    if(g.argc<4){
      usage("close branch-name(s)...");
    }
    branch_cmd_close(3, 1);
  }else if( strncmp(zCmd,"reopen",6)==0 ){
    if(g.argc<4){
      usage("reopen branch-name(s)...");
    }
    branch_cmd_close(3, 0);
  }else if( strncmp(zCmd,"hide",4)==0 ){
    if(g.argc<4){
      usage("hide branch-name(s)...");
    }
    branch_cmd_hide(3,1);
  }else if( strncmp(zCmd,"unhide",6)==0 ){
    if(g.argc<4){
      usage("unhide branch-name(s)...");
    }
    branch_cmd_hide(3,0);
  }else{
    fossil_panic("branch subcommand should be one of: "
                 "new list");
  }
    fossil_fatal("branch subcommand should be one of: "
                 "close current hide info list ls lsh new reopen unhide");
  }
}

/*
** This is the new-style branch-list page that shows the branch names
** together with their ages (time of last check-in) and whether or not
** they are closed or merged to another branch.
**
** Control jumps to this routine from brlist_page() (the /brlist handler)
** if there are no query parameters.
*/
static void new_brlist_page(void){
  Stmt q;
  double rNow;
  int show_colors = PB("colors");
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_set_current_feature("branch");
  style_header("Branches");
  style_adunit_config(ADUNIT_RIGHT_OK);
  style_submenu_checkbox("colors", "Use Branch Colors", 0, 0);
  login_anonymous_available();

  brlist_create_temp_table();
  db_prepare(&q, "SELECT * FROM tmp_brlist ORDER BY mtime DESC");
  rNow = db_double(0.0, "SELECT julianday('now')");
  @ <script id="brlist-data" type="application/json">\
  @ {"timelineUrl":"%R/timeline"}</script>
  @ <div class="brlist">
  @ <table class='sortable' data-column-types='tkNtt' data-init-sort='2'>
  @ <thead><tr>
  @ <th>Branch Name</th>
  @ <th>Last Change</th>
  @ <th>Check-ins</th>
  @ <th>Status</th>
  @ <th>Resolution</th>
  @ </tr></thead><tbody>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zBranch = db_column_text(&q, 0);
    double rMtime = db_column_double(&q, 1);
    int isClosed = db_column_int(&q, 2);
    const char *zMergeTo = db_column_text(&q, 3);
    int nCkin = db_column_int(&q, 4);
    const char *zLastCkin = db_column_text(&q, 5);
    const char *zBgClr = db_column_text(&q, 6);
    char *zAge = human_readable_age(rNow - rMtime);
    sqlite3_int64 iMtime = (sqlite3_int64)(rMtime*86400.0);
    if( zMergeTo && zMergeTo[0]==0 ) zMergeTo = 0;
    if( zBgClr == 0 ){
      if( zBranch==0 || strcmp(zBranch,"trunk")==0 ){
        zBgClr = 0;
      }else{
        zBgClr = hash_color(zBranch);
      }
    }
    if( zBgClr && zBgClr[0] && show_colors ){
      @ <tr style="background-color:%s(zBgClr)">
    }else{
      @ <tr>
    }
    @ <td>%z(href("%R/timeline?r=%T",zBranch))%h(zBranch)</a><input
    @  type="checkbox" disabled="disabled"/></td>
    @ <td data-sortkey="%016llx(iMtime)">%s(zAge)</td>
    @ <td>%d(nCkin)</td>
    fossil_free(zAge);
    @ <td>%s(isClosed?"closed":"")</td>
    if( zMergeTo ){
      @ <td>merged into
      @ %z(href("%R/timeline?f=%!S",zLastCkin))%h(zMergeTo)</a></td>
    }else{
      @ <td></td>
    }
    @ </tr>
  }
  @ </tbody></table></div>
  db_finalize(&q);
  builtin_request_js("fossil.page.brlist.js");
  style_table_sorter();
  style_finish_page();
}

/*
** WEBPAGE: brlist
** Show a list of branches.  With no query parameters, a sortable table
** is used to show all branches.  If query parameters are present a
** fixed bullet list is shown.
**
** Query parameters:
**
**     all         Show all branches
**     closed      Show only closed branches
**     open        Show only open branches
** Show a timeline of all branches
**     colortest   Show all branches with automatic color
**
** When there are no query parameters, a new-style /brlist page shows
** all branches in a sortable table.  The new-style /brlist page is
** preferred and is the default.
*/
void brlist_page(void){
  Stmt q;
  int cnt;
  int showClosed = P("closed")!=0;
  int showAll = P("all")!=0;
  int showOpen = P("open")!=0;
  int colorTest = P("colortest")!=0;
  int brFlags = BRL_OPEN_ONLY;

  if( showClosed==0 && showAll==0 && showOpen==0 && colorTest==0 ){
    new_brlist_page();
    return;
  }
  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }

  style_header("Branches");
  style_submenu_element("Timeline", "Timeline", "brtimeline");
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  if( colorTest ){
    showClosed = 0;
    showAll = 1;
  }
  if( showAll ) brFlags = BRL_BOTH;
  if( showClosed ) brFlags = BRL_CLOSED_ONLY;

  style_set_current_feature("branch");
  style_header("%s", showClosed ? "Closed Branches" :
                        showAll ? "All Branches" : "Open Branches");
  style_submenu_element("Timeline", "brtimeline");
  if( showClosed ){
    style_submenu_element("All", "brlist?all");
    style_submenu_element("Open", "brlist?open");
  }else if( showAll ){
    style_submenu_element("Closed", "brlist?closed");
    style_submenu_element("Open", "brlist");
  }else{
    style_submenu_element("All", "brlist?all");
    style_submenu_element("Closed", "brlist?closed");
  }
  if( !colorTest ){
    style_submenu_element("Color-Test", "brlist?colortest");
  }else{
    style_submenu_element("All", "brlist?all");
  }
  login_anonymous_available();
  compute_leaves(0, 1);
#if 0
  style_sidebox_begin("Nomenclature:", "33%");
  @ <ol>
  @ <li> An <div class="sideboxDescribed">%z(href("brlist"))
  @ <li> An <b>open branch</b> is a branch that has one or
  @ more <a href="leaves">open leaves.</a>
  @ open branch</a></div> is a branch that has one or more
  @ <div class="sideboxDescribed">%z(href("leaves"))open leaves.</a></div>
  @ The presence of open leaves presumably means
  @ that the branch is still being extended with new check-ins.</li>
  @ <li> A <div class="sideboxDescribed">%z(href("brlist?closed"))
  @ <li> A <b>closed branch</b> is a branch with only
  @ <a href="leaves?closed">closed leaves</a>.
  @ closed branch</a></div> is a branch with only
  @ <div class="sideboxDescribed">%z(href("leaves?closed"))
  @ closed leaves</a></div>.
  @ Closed branches are fixed and do not change (unless they are first
  @ reopened)</li>
  @ reopened).</li>
  @ </ol>
  style_sidebox_end();

#endif
  db_prepare(&q,
    "SELECT DISTINCT value FROM tagxref"
    " WHERE tagid=%d AND value NOT NULL"
    "   AND rid IN leaves"
    " ORDER BY value /*sort*/",
    TAG_BRANCH
  );
  cnt = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zBr = db_column_text(&q, 0);
    if( cnt==0 ){
      @ <h2>Open Branches:</h2>
      @ <ul>
      cnt++;
    }
    if( g.okHistory ){
      @ <li><a href="%s(g.zBaseURL)/timeline?t=%T(zBr)">%h(zBr)</a></li>
    }else{
      @ <li><b>%h(zBr)</b></li>
    }

  }
  db_finalize(&q);
  if( cnt ){
    @ </ul>
  }
  branch_prepare_list_query(&q, brFlags, 0, 0, 0);
  cnt = 0;
  db_prepare(&q,
    "SELECT value FROM tagxref"
    " WHERE tagid=%d AND value NOT NULL"
    " EXCEPT "
    "SELECT value FROM tagxref"
    " WHERE tagid=%d AND value NOT NULL"
    "   AND rid IN leaves"
    " ORDER BY value /*sort*/",
    TAG_BRANCH, TAG_BRANCH
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zBr = db_column_text(&q, 0);
    if( cnt==0 ){
      if( colorTest ){
        @ <h2>Default background colors for all branches:</h2>
      }else if( showClosed ){
      @ <h2>Closed Branches:</h2>
        @ <h2>Closed Branches:</h2>
      }else if( showAll ){
        @ <h2>All Branches:</h2>
      }else{
        @ <h2>Open Branches:</h2>
      }
      @ <ul>
      cnt++;     
      cnt++;
    }
    if( g.okHistory ){
      @ <li><a href="%s(g.zBaseURL)/timeline?t=%T(zBr)">%h(zBr)</a></li>
    if( colorTest ){
      const char *zColor = hash_color(zBr);
      @ <li><span style="background-color: %s(zColor)">
      @ %h(zBr) &rarr; %s(zColor)</span></li>
    }else{
      @ <li><b>%h(zBr)</b></li>
      @ <li>%z(href("%R/timeline?r=%T",zBr))%h(zBr)</a></li>
    }
  }
  if( cnt ){
    @ </ul>
  }
  db_finalize(&q);
  @ </ul>
  @ <br clear="both">
  @ <script>
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
  style_finish_page();
}

/*
** This routine is called while for each check-in that is rendered by
** the timeline of a "brlist" page.  Add some additional hyperlinks
** to the end of the line.
*/
static void brtimeline_extra(int rid){
  Stmt q;
  if( !g.okHistory ) return;
  db_prepare(&q, 
  if( !g.perm.Hyperlink ) return;
  db_prepare(&q,
    "SELECT substr(tagname,5) FROM tagxref, tag"
    " WHERE tagxref.rid=%d"
    "   AND tagxref.tagid=tag.tagid"
    "   AND tagxref.tagtype>0"
    "   AND tag.tagname GLOB 'sym-*'",
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagName = db_column_text(&q, 0);
    @ <a href="%s(g.zBaseURL)/timeline?t=%T(zTagName)">[timeline]</a>
    @  %z(href("%R/timeline?r=%T",zTagName))[timeline]</a>
  }
  db_finalize(&q);
}

/*
** WEBPAGE: brtimeline
**
** Show a timeline of all branches
**
** Query parameters:
**
**     ng            No graph
**     nohidden      Hide check-ins with "hidden" tag
**     onlyhidden    Show only check-ins with "hidden" tag
**     brbg          Background color by branch name
**     ubg           Background color by user name
*/
void brtimeline_page(void){
  Blob sql = empty_blob;
  Stmt q;
  int tmFlags;                            /* Timeline display flags */
  int fNoHidden = PB("nohidden")!=0;      /* The "nohidden" query parameter */
  int fOnlyHidden = PB("onlyhidden")!=0;  /* The "onlyhidden" query parameter */

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }

  style_set_current_feature("branch");
  style_header("Branches");
  style_submenu_element("List", "List", "brlist");
  style_submenu_element("List", "brlist");
  login_anonymous_available();
  timeline_ss_submenu();
  cgi_check_for_malice();
  @ <h2>The initial check-in for each branch:</h2>
  blob_append(&sql, timeline_query_for_www(), -1);
  db_prepare(&q,
    "%s AND blob.rid IN (SELECT rid FROM tagxref"
    "                     WHERE tagtype>0 AND tagid=%d AND srcid!=0)"
    " ORDER BY event.mtime DESC",
  blob_append_sql(&sql,
    "AND blob.rid IN (SELECT rid FROM tagxref"
    "                  WHERE tagtype>0 AND tagid=%d AND srcid!=0)", TAG_BRANCH);
  if( fNoHidden || fOnlyHidden ){
    const char* zUnaryOp = fNoHidden ? "NOT" : "";
    blob_append_sql(&sql,
      " AND %s EXISTS(SELECT 1 FROM tagxref"
      " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)\n",
      zUnaryOp/*safe-for-%s*/, TAG_HIDDEN);
  }
  db_prepare(&q, "%s ORDER BY event.mtime DESC", blob_sql_text(&sql));
    timeline_query_for_www(), TAG_BRANCH
  );
  www_print_timeline(&q, 0, brtimeline_extra);
  blob_reset(&sql);
  /* Always specify TIMELINE_DISJOINT, or graph_finish() may fail because of too
  ** many descenders to (off-screen) parents. */
  tmFlags = TIMELINE_DISJOINT | TIMELINE_NOSCROLL;
  if( PB("ng")==0 ) tmFlags |= TIMELINE_GRAPH;
  if( PB("brbg")!=0 ) tmFlags |= TIMELINE_BRCOLOR;
  if( PB("ubg")!=0 ) tmFlags |= TIMELINE_UCOLOR;
  www_print_timeline(&q, tmFlags, 0, 0, 0, 0, 0, brtimeline_extra);
  db_finalize(&q);
  @ <br clear="both">
  @ <script>
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
  style_finish_page();
}
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** This file contains code to implement the file browser web interface.
*/
#include "config.h"
#include "browse.h"
#include <assert.h>

/*
** This is the implemention of the "pathelement(X,N)" SQL function.
** This is the implementation of the "pathelement(X,N)" SQL function.
**
** If X is a unix-like pathname (with "/" separators) and N is an
** integer, then skip the initial N characters of X and return the
** name of the path component that begins on the N+1th character
** (numbered from 0).  If the path component is a directory (if
** it is followed by other path components) then prepend "/".
**
** Examples:
**
**      pathelement('abc/pqr/xyz', 4)  ->  '/pqr'
**      pathelement('abc/pqr', 4)      ->  'pqr'
**      pathelement('abc/pqr/xyz', 0)  ->  '/abc'
*/
static void pathelementFunc(
void pathelementFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const unsigned char *z;
  int len, n, i;
  char *zOut;
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    sqlite3_result_text(context, (char*)&z[n], len-n, SQLITE_TRANSIENT);
  }else{
    zOut = sqlite3_mprintf("/%.*s", i-n, &z[n]);
    sqlite3_result_text(context, zOut, i-n+1, sqlite3_free);
  }
}

/*
** Flag arguments for hyperlinked_path()
*/
#if INTERFACE
# define LINKPATH_FINFO  0x0001       /* Link final term to /finfo */
# define LINKPATH_FILE   0x0002       /* Link final term to /file */
#endif

/*
** Given a pathname which is a relative path from the root of
** the repository to a file or directory, compute a string which
** is an HTML rendering of that path with hyperlinks on each
** directory component of the path where the hyperlink redirects
** to the "dir" page for the directory.
**
** There is no hyperlink on the file element of the path.
**
** The computed string is appended to the pOut blob.  pOut should
** have already been initialized.
*/
void hyperlinked_path(const char *zPath, Blob *pOut){
void hyperlinked_path(
  const char *zPath,    /* Path to render */
  Blob *pOut,           /* Write into this blob */
  const char *zCI,      /* check-in name, or NULL */
  const char *zURI,     /* "dir" or "tree" */
  const char *zREx,     /* Extra query parameters */
  unsigned int mFlags   /* Extra flags */
){
  int i, j;
  char *zSep = "";

  for(i=0; zPath[i]; i=j){
    for(j=i; zPath[j] && zPath[j]!='/'; j++){}
    if( zPath[j] && g.okHistory ){
      blob_appendf(pOut, "%s<a href=\"%s/dir?name=%#T\">%#h</a>", 
                   zSep, g.zBaseURL, j, zPath, j-i, &zPath[i]);
    if( zPath[j]==0 ){
      if( mFlags & LINKPATH_FILE ){
        zURI = "file";
      }else if( mFlags & LINKPATH_FINFO ){
        zURI = "finfo";
      }else{
        blob_appendf(pOut, "/%h", zPath+i);
        break;
      }
    }
    if( zCI ){
      char *zLink = href("%R/%s?name=%#T%s&ci=%T", zURI, j, zPath, zREx,zCI);
      blob_appendf(pOut, "%s%z%#h</a>",
                   zSep, zLink, j-i, &zPath[i]);
    }else{
      char *zLink = href("%R/%s?name=%#T%s", zURI, j, zPath, zREx);
      blob_appendf(pOut, "%s%#h", zSep, j-i, &zPath[i]);
      blob_appendf(pOut, "%s%z%#h</a>",
                   zSep, zLink, j-i, &zPath[i]);
    }
    zSep = "/";
    while( zPath[j]=='/' ){ j++; }
  }
}

/*
** WEBPAGE: docdir
**
** Show the files and subdirectories within a single directory of the
** source tree.  This works similarly to /dir but with the following
** differences:
**
**    *   Links to files go to /doc (showing the file content directly,
**        depending on mimetype) rather than to /file (which always shows
**        the file embedded in a standard Fossil page frame).
**
**    *   The submenu and the page title is now show.  The page is plain.
**
** The /docdir page is a shorthand for /dir with the "dx" query parameter.
**
** Query parameters:
**
**    ci=LABEL         Show only files in this check-in.  If omitted, the
**                     "trunk" directory is used.
**    name=PATH        Directory to display.  Optional.  Top-level if missing
**    re=REGEXP        Show only files matching REGEXP
**    noreadme         Do not attempt to display the README file.
**    dx               File links to go to /doc instead of /file or /finfo.
*/
void page_docdir(void){ page_dir(); }

/*
** WEBPAGE: dir
**
** Show the files and subdirectories within a single directory of the
** source tree.  Only files for a single check-in are shown if the ci=
** query parameter is present.  If ci= is missing, the union of files
** across all check-ins is shown.
**
** Query parameters:
**
**    ci=LABEL         Show only files in this check-in.  Optional.
**    name=PATH        Directory to display.  Required.
**    ci=LABEL         Show only files in this check-in.  Optional.
**    name=PATH        Directory to display.  Optional.  Top-level if missing
**    re=REGEXP        Show only files matching REGEXP
**    type=TYPE        TYPE=flat: use this display
**                     TYPE=tree: use the /tree display instead
**    noreadme         Do not attempt to display the README file.
**    dx               Behave like /docdir
*/
void page_dir(void){
  const char *zD = P("name");
  char *zD = fossil_strdup(P("name"));
  int nD = zD ? strlen(zD)+1 : 0;
  int mxLen;
  int nCol, nRow;
  int cnt, i;
  char *zPrefix;
  Stmt q;
  const char *zCI = P("ci");
  int rid = 0;
  Blob content;
  char *zUuid = 0;
  Blob dirname;
  Manifest m;
  Manifest *pM = 0;
  const char *zSubdirLink;
  int linkTrunk = 1;
  int linkTip = 1;
  HQuery sURI;
  int isSymbolicCI = 0;   /* ci= is symbolic name, not a hash prefix */
  int isBranchCI = 0;     /* True if ci= refers to a branch name */
  char *zHeader = 0;
  const char *zRegexp;    /* The re= query parameter */
  char *zMatch;           /* Extra title text describing the match */
  int bDocDir = PB("dx") || strncmp(g.zPath, "docdir", 6)==0;

  if( zCI && strlen(zCI)==0 ){ zCI = 0; }
  if( strcmp(PD("type","flat"),"tree")==0 ){ page_tree(); return; }
  login_check_credentials();
  if( !g.okHistory ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_header("File List");
  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);
  while( nD>1 && zD[nD-2]=='/' ){ zD[(--nD)-1] = 0; }

  /* If the name= parameter is an empty string, make it a NULL pointer */
  if( zD && strlen(zD)==0 ){ zD = 0; }

  /* If a specific check-in is requested, fetch and parse it. */
  if( zCI && (rid = name_to_rid(zCI))!=0 && content_get(rid, &content) ){
    if( !manifest_parse(&m, &content) || m.type!=CFTYPE_MANIFEST ){
  /* If a specific check-in is requested, fetch and parse it.  If the
  ** specific check-in does not exist, clear zCI.  zCI==0 will cause all
  ** files from all check-ins to be displayed.
  */
  if( bDocDir && zCI==0 ) zCI = "trunk";
  if( zCI ){
    pM = manifest_get_by_name(zCI, &rid);
    if( pM ){
      int trunkRid = symbolic_name_to_rid("tag:trunk", "ci");
      linkTrunk = trunkRid && rid != trunkRid;
      linkTip = rid != symbolic_name_to_rid("tip", "ci");
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      isSymbolicCI = (sqlite3_strnicmp(zUuid, zCI, strlen(zCI))!=0);
      isBranchCI = branch_includes_uuid(zCI, zUuid);
      if( bDocDir ) zCI = mprintf("%S", zUuid);
      Th_Store("current_checkin", zCI);
    }else{
      zCI = 0;
    }
  }

  assert( isSymbolicCI==0 || (zCI!=0 && zCI[0]!=0) );
  if( zD==0 ){
    if( zCI ){
      zHeader = mprintf("Top-level Files of %s", zCI);
    }else{
      zHeader = mprintf("All Top-level Files");
    }
  }else{
    if( zCI ){
      zHeader = mprintf("Files in %s/ of %s", zD, zCI);
    }else{
      zHeader = mprintf("All Files in %s/", zD);
    }
  }
  zRegexp = P("re");
  if( zRegexp ){
    zHeader = mprintf("%z matching \"%s\"", zHeader, zRegexp);
    zMatch = mprintf(" matching \"%h\"", zRegexp);
  }else{
    zMatch = "";
  }
  style_header("%s", zHeader);
  fossil_free(zHeader);
  style_adunit_config(ADUNIT_RIGHT_OK);
  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);
  url_initialize(&sURI, "dir");
  cgi_check_for_malice();
  cgi_query_parameters_to_url(&sURI);

  /* Compute the title of the page */  
  blob_zero(&dirname);
  if( zD ){
    blob_append(&dirname, "in directory ", -1);
    hyperlinked_path(zD, &dirname);
    zPrefix = mprintf("%h/", zD);
  /* Compute the title of the page */
  if( bDocDir ){
    zPrefix = zD ? mprintf("%s/",zD) : "";
  }else if( zD ){
    Blob dirname;
    blob_init(&dirname, 0, 0);
    hyperlinked_path(zD, &dirname, zCI, "dir", "", 0);
    @ <h2>Files in directory %s(blob_str(&dirname)) \
    blob_reset(&dirname);
    zPrefix = mprintf("%s/", zD);
    style_submenu_element("Top-Level", "%s",
                          url_render(&sURI, "name", 0, 0, 0));
  }else{
    blob_append(&dirname, "in the top-level directory", -1);
    @ <h2>Files in the top-level directory \
    zPrefix = "";
  }
  if( zCI ){
    char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    char zShort[20];
    memcpy(zShort, zUuid, 10);
    if( bDocDir ){
      /* No header for /docdir.  Just give the list of files. */
    }else if( fossil_strcmp(zCI,"tip")==0 ){
      @ from the %z(href("%R/info?name=%T",zCI))latest check-in</a>\
      @ %s(zMatch)</h2>
    zShort[10] = 0;
    @ <h2>Files of check-in [<a href="vinfo?name=%T(zUuid)">%s(zShort)</a>]
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%s/dir?ci=%S&name=%T", g.zTop, zUuid, zPrefix);
    if( zD ){
    }else if( isBranchCI ){
      @ from the %z(href("%R/info?name=%T",zCI))latest check-in</a> \
      @ of branch %z(href("%R/timeline?r=%T",zCI))%h(zCI)</a>\
      @ %s(zMatch)</h2>
    }else {
      @ of check-in %z(href("%R/info?name=%T",zCI))%h(zCI)</a>\
      @ %s(zMatch)</h2>
    }
    if( bDocDir ){
      style_submenu_element("Top", "Top", "%s/dir?ci=%S", g.zTop, zUuid);
      style_submenu_element("All", "All", "%s/dir?name=%t", g.zTop, zD);
      zSubdirLink = mprintf("%R/docdir?ci=%T&name=%T", zCI, zPrefix);
    }else{
      zSubdirLink = mprintf("%R/dir?ci=%T&name=%T", zCI, zPrefix);
    }
    if( nD==0 && !bDocDir ){
      style_submenu_element("All", "All", "%s/dir", g.zBaseURL);
      style_submenu_element("File Ages", "%R/fileage?name=%T", zCI);
    }
  }else{
    @ <h2>The union of all files from all check-ins
    @ in any check-in</h2>
    @ %s(blob_str(&dirname))</h2>
    zSubdirLink = mprintf("%s/dir?name=%T", g.zBaseURL, zPrefix);
    if( zD ){
      style_submenu_element("Top", "Top", "%s/dir", g.zBaseURL);
      style_submenu_element("Tip", "Tip", "%s/dir?name=%t&ci=tip",
                            g.zBaseURL, zD);
      style_submenu_element("Trunk", "Trunk", "%s/dir?name=%t&ci=trunk",
    zSubdirLink = mprintf("%R/dir?name=%T", zPrefix);
  }
  if( linkTrunk && !bDocDir ){
    style_submenu_element("Trunk", "%s",
                          url_render(&sURI, "ci", "trunk", 0, 0));
  }
  if( linkTip && !bDocDir ){
    style_submenu_element("Tip", "%s", url_render(&sURI, "ci", "tip", 0, 0));
  }
  if( zD && !bDocDir ){
    style_submenu_element("History","%R/timeline?chng=%T/*", zD);
                             g.zBaseURL,zD);
    }else{
      style_submenu_element("Tip", "Tip", "%s/dir?ci=tip", g.zBaseURL);
      style_submenu_element("Trunk", "Trunk", "%s/dir?ci=trunk", g.zBaseURL);
    }
  }
  if( !bDocDir ){
    style_submenu_element("All", "%s", url_render(&sURI, "ci", 0, 0, 0));
    style_submenu_element("Tree-View", "%s",
                          url_render(&sURI, "type", "tree", 0, 0));
  }

  /* Compute the temporary table "localfiles" containing the names
  ** of all files and subdirectories in the zD[] directory.  
  ** of all files and subdirectories in the zD[] directory.
  **
  ** Subdirectory names begin with "/".  This causes them to sort
  ** first and it also gives us an easy way to distinguish files
  ** from directories in the loop that follows.
  */
  db_multi_exec(
     "CREATE TEMP TABLE localfiles(x UNIQUE NOT NULL, u);"
     "CREATE TEMP TABLE allfiles(x UNIQUE NOT NULL, u);"
  );
  if( zCI ){
    Stmt ins;
    int i;
    db_prepare(&ins, "INSERT INTO allfiles VALUES(:x, :u)");
    for(i=0; i<m.nFile; i++){
      db_bind_text(&ins, ":x", m.aFile[i].zName);
      db_bind_text(&ins, ":u", m.aFile[i].zUuid);
      db_step(&ins);
      db_reset(&ins);
    /* Files in the specific checked given by zCI */
    if( zD ){
      db_multi_exec(
        "INSERT OR IGNORE INTO localfiles"
        " SELECT pathelement(filename,%d), uuid"
        "   FROM files_of_checkin(%Q)"
        "  WHERE filename GLOB '%q/*'",
        nD, zCI, zD
      );
    }
    db_finalize(&ins);
  }else{
    db_multi_exec(
      "INSERT INTO allfiles SELECT name, NULL FROM filename"
    );
  }
  if( zD ){
    db_multi_exec(
       "INSERT OR IGNORE INTO localfiles "
       "  SELECT pathelement(x,%d), u FROM allfiles"
       "   WHERE x GLOB '%q/*'",
       strlen(zD)+1, zD
    );
  }else{
    db_multi_exec(
       "INSERT OR IGNORE INTO localfiles "
       "  SELECT pathelement(x,0), u FROM allfiles"
    }else{
      db_multi_exec(
        "INSERT OR IGNORE INTO localfiles"
        " SELECT pathelement(filename,%d), uuid"
        "   FROM files_of_checkin(%Q)",
        nD, zCI
      );
    }
  }else{
    /* All files across all check-ins */
    if( zD ){
      db_multi_exec(
        "INSERT OR IGNORE INTO localfiles"
        " SELECT pathelement(name,%d), NULL FROM filename"
        "  WHERE name GLOB '%q/*'",
        nD, zD
      );
    }else{
      db_multi_exec(
        "INSERT OR IGNORE INTO localfiles"
        " SELECT pathelement(name,0), NULL FROM filename"
      );
    }
  }

  /* If the re=REGEXP query parameter is present, filter out names that
  ** do not match the pattern */
  if( zRegexp ){
    db_multi_exec(
      "DELETE FROM localfiles WHERE x NOT REGEXP %Q", zRegexp
    );
  }

  /* Generate a multi-column table listing the contents of zD[]
  ** directory.
  */
  mxLen = db_int(12, "SELECT max(length(x)) FROM localfiles /*scan*/");
  cnt = db_int(0, "SELECT count(*) FROM localfiles /*scan*/");
  nCol = 4;
  nRow = (cnt+nCol-1)/nCol;
  db_prepare(&q, "SELECT x, u FROM localfiles ORDER BY x /*scan*/");
  @ <table border="0" width="100%%"><tr><td valign="top" width="25%%">
  i = 0;
  if( mxLen<12 ) mxLen = 12;
  mxLen += (mxLen+9)/10;
  db_prepare(&q,
     "SELECT x, u FROM localfiles ORDER BY x COLLATE uintnocase /*scan*/");
  @ <div class="columns files" style="columns: %d(mxLen)ex auto">
  @ <ul class="browser">
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFN;
    if( i==nRow ){
      @ </td><td valign="top" width="25%%">
      i = 0;
    }
    i++;
    zFN = db_column_text(&q, 0);
    if( zFN[0]=='/' ){
      zFN++;
      @ <li><a href="%s(zSubdirLink)%T(zFN)">%h(zFN)/</a></li>
    }else if( zCI ){
      const char *zUuid = db_column_text(&q, 1);
      @ <li><a href="%s(g.zBaseURL)/artifact?name=%s(zUuid)">%h(zFN)</a>
      @ <li class="dir">%z(href("%s%T",zSubdirLink,zFN))%h(zFN)</a></li>
    }else{
      const char *zLink;
      if( bDocDir ){
        zLink = href("%R/doc/%T/%T%T", zCI, zPrefix, zFN);
      }else if( zCI ){
        zLink = href("%R/file?name=%T%T&ci=%T",zPrefix,zFN,zCI);
      }else{
        zLink = href("%R/finfo?name=%T%T",zPrefix,zFN);
      }
      @ <li class="%z(fileext_class(zFN))">%z(zLink)%h(zFN)</a></li>
    }
  }
  db_finalize(&q);
  manifest_destroy(pM);
  @ </ul></div>

  /* If the "noreadme" query parameter is present, do not try to
  ** show the content of the README file.
  */
  if( P("noreadme")!=0 ){
    style_finish_page();
    return;
  }

  /* If the directory contains a readme file, then display its content below
  ** the list of files
  */
  db_prepare(&q,
    "SELECT x, u FROM localfiles"
    " WHERE x COLLATE nocase IN"
    " ('readme','readme.txt','readme.md','readme.wiki','readme.markdown',"
    " 'readme.html') ORDER BY x COLLATE uintnocase LIMIT 1;"
  );
  if( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q,0);
    const char *zUuid = db_column_text(&q,1);
    if( zUuid ){
      rid = fast_uuid_to_rid(zUuid);
    }else{
      if( zD ){
        rid = db_int(0,
           "SELECT fid FROM filename, mlink, event"
           " WHERE name='%q/%q'"
           "   AND mlink.fnid=filename.fnid"
           "   AND event.objid=mlink.mid"
           " ORDER BY event.mtime DESC LIMIT 1",
           zD, zName
        );
      }else{
        rid = db_int(0,
           "SELECT fid FROM filename, mlink, event"
           " WHERE name='%q'"
           "   AND mlink.fnid=filename.fnid"
           "   AND event.objid=mlink.mid"
           " ORDER BY event.mtime DESC LIMIT 1",
           zName
        );
      }
    }
    if( rid ){
      @ <hr>
      if( sqlite3_strlike("readme.html", zName, 0)==0 ){
        if( zUuid==0 ){
          zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
        }
        @ <iframe src="%R/raw/%s(zUuid)"
        @ width="100%%" frameborder="0" marginwidth="0" marginheight="0"
        @ sandbox="allow-same-origin"
        @ onload="this.height=this.contentDocument.documentElement.scrollHeight;">
        @ </iframe>
      }else{
        Blob content;
        const char *zMime = mimetype_from_name(zName);
        content_get(rid, &content);
        safe_html_context(DOCSRC_FILE);
        wiki_render_by_mimetype(&content, zMime);
        document_emit_js();
      }
    }
  }
  db_finalize(&q);
  style_finish_page();
}

/*
** Objects used by the "tree" webpage.
*/
typedef struct FileTreeNode FileTreeNode;
typedef struct FileTree FileTree;

/*
** A single line of the file hierarchy
*/
struct FileTreeNode {
  FileTreeNode *pNext;      /* Next entry in an ordered list of them all */
  FileTreeNode *pParent;    /* Directory containing this entry */
  FileTreeNode *pSibling;   /* Next element in the same subdirectory */
  FileTreeNode *pChild;     /* List of child nodes */
  FileTreeNode *pLastChild; /* Last child on the pChild list */
  char *zName;              /* Name of this entry.  The "tail" */
  char *zFullName;          /* Full pathname of this entry */
  char *zUuid;              /* Artifact hash of this file.  May be NULL. */
  double mtime;             /* Modification time for this entry */
  double sortBy;            /* Either mtime or size, depending on desired
                               sort order */
  int iSize;                /* Size for this entry */
  unsigned nFullName;       /* Length of zFullName */
  unsigned iLevel;          /* Levels of parent directories */
};

/*
** A complete file hierarchy
*/
struct FileTree {
  FileTreeNode *pFirst;     /* First line of the list */
  FileTreeNode *pLast;      /* Last line of the list */
  FileTreeNode *pLastTop;   /* Last top-level node */
};

/*
** Add one or more new FileTreeNodes to the FileTree object so that the
** leaf object zPathname is at the end of the node list.
**
** The caller invokes this routine once for each leaf node (each file
** as opposed to each directory).  This routine fills in any missing
** intermediate nodes automatically.
**
** When constructing a list of FileTreeNodes, all entries that have
** a common directory prefix must be added consecutively in order for
** the tree to be constructed properly.
*/
static void tree_add_node(
  FileTree *pTree,         /* Tree into which nodes are added */
  const char *zPath,       /* The full pathname of file to add */
  const char *zUuid,       /* Hash of the file.  Might be NULL. */
  double mtime,            /* Modification time for this entry */
  int size,                /* Size for this entry */
  int sortOrder            /* 0: filename, 1: mtime, 2: size */
){
  int i;
  FileTreeNode *pParent;   /* Parent (directory) of the next node to insert */

  /* Make pParent point to the most recent ancestor of zPath, or
  ** NULL if there are no prior entires that are a container for zPath.
  */
  pParent = pTree->pLast;
  while( pParent!=0 &&
      ( strncmp(pParent->zFullName, zPath, pParent->nFullName)!=0
        || zPath[pParent->nFullName]!='/' )
  ){
    pParent = pParent->pParent;
  }
  i = pParent ? pParent->nFullName+1 : 0;
  while( zPath[i] ){
    FileTreeNode *pNew;
    int iStart = i;
    int nByte;
    while( zPath[i] && zPath[i]!='/' ){ i++; }
    nByte = sizeof(*pNew) + i + 1;
    if( zUuid!=0 && zPath[i]==0 ) nByte += HNAME_MAX+1;
    pNew = fossil_malloc( nByte );
    memset(pNew, 0, sizeof(*pNew));
    pNew->zFullName = (char*)&pNew[1];
    memcpy(pNew->zFullName, zPath, i);
    pNew->zFullName[i] = 0;
    pNew->nFullName = i;
    if( zUuid!=0 && zPath[i]==0 ){
      pNew->zUuid = pNew->zFullName + i + 1;
      memcpy(pNew->zUuid, zUuid, strlen(zUuid)+1);
    }
    pNew->zName = pNew->zFullName + iStart;
    if( pTree->pLast ){
      pTree->pLast->pNext = pNew;
    }else{
      pTree->pFirst = pNew;
    }
    pTree->pLast = pNew;
    pNew->pParent = pParent;
    if( pParent ){
      if( pParent->pChild ){
        pParent->pLastChild->pSibling = pNew;
      }else{
        pParent->pChild = pNew;
      }
      pNew->iLevel = pParent->iLevel + 1;
      pParent->pLastChild = pNew;
    }else{
      if( pTree->pLastTop ) pTree->pLastTop->pSibling = pNew;
      pTree->pLastTop = pNew;
    }
    pNew->mtime = mtime;
    pNew->iSize = size;
    if( sortOrder ){
      pNew->sortBy = sortOrder==1 ? mtime : (double)size;
    }else{
      pNew->sortBy = 0.0;
    }
    while( zPath[i]=='/' ){ i++; }
    pParent = pNew;
  }
  while( pParent && pParent->pParent ){
    if( pParent->pParent->mtime < pParent->mtime ){
      pParent->pParent->mtime = pParent->mtime;
    }
    pParent = pParent->pParent;
  }
}

/* Comparison function for two FileTreeNode objects.  Sort first by
** sortBy (larger numbers first) and then by zName (smaller names first).
**
** The sortBy field will be the same as mtime in order to sort by time,
** or the same as iSize to sort by file size.
**
** Return negative if pLeft<pRight.
** Return positive if pLeft>pRight.
** Return zero if pLeft==pRight.
*/
static int compareNodes(FileTreeNode *pLeft, FileTreeNode *pRight){
  if( pLeft->sortBy>pRight->sortBy ) return -1;
  if( pLeft->sortBy<pRight->sortBy ) return +1;
  return fossil_stricmp(pLeft->zName, pRight->zName);
}

/* Merge together two sorted lists of FileTreeNode objects */
static FileTreeNode *mergeNodes(FileTreeNode *pLeft,  FileTreeNode *pRight){
  FileTreeNode *pEnd;
  FileTreeNode base;
  pEnd = &base;
  while( pLeft && pRight ){
    if( compareNodes(pLeft,pRight)<=0 ){
      pEnd = pEnd->pSibling = pLeft;
      pLeft = pLeft->pSibling;
    }else{
      pEnd = pEnd->pSibling = pRight;
      pRight = pRight->pSibling;
    }
  }
  if( pLeft ){
    pEnd->pSibling = pLeft;
  }else{
    pEnd->pSibling = pRight;
  }
  return base.pSibling;
}

/* Sort a list of FileTreeNode objects in sortmtime order. */
static FileTreeNode *sortNodes(FileTreeNode *p){
  FileTreeNode *a[30];
  FileTreeNode *pX;
  int i;

  memset(a, 0, sizeof(a));
  while( p ){
    pX = p;
    p = pX->pSibling;
    pX->pSibling = 0;
    for(i=0; i<count(a)-1 && a[i]!=0; i++){
      pX = mergeNodes(a[i], pX);
      a[i] = 0;
    }
    a[i] = mergeNodes(a[i], pX);
  }
  pX = 0;
  for(i=0; i<count(a); i++){
    pX = mergeNodes(a[i], pX);
  }
  return pX;
}

/* Sort an entire FileTreeNode tree by mtime
**
** This routine invalidates the following fields:
**
**     FileTreeNode.pLastChild
**     FileTreeNode.pNext
**
** Use relinkTree to reconnect the pNext pointers.
*/
static FileTreeNode *sortTree(FileTreeNode *p){
  FileTreeNode *pX;
  for(pX=p; pX; pX=pX->pSibling){
    if( pX->pChild ) pX->pChild = sortTree(pX->pChild);
  }
  return sortNodes(p);
}

/* Reconstruct the FileTree by reconnecting the FileTreeNode.pNext
** fields in sequential order.
*/
static void relinkTree(FileTree *pTree, FileTreeNode *pRoot){
  while( pRoot ){
    if( pTree->pLast ){
      pTree->pLast->pNext = pRoot;
    }else{
      pTree->pFirst = pRoot;
    }
    pTree->pLast = pRoot;
    if( pRoot->pChild ) relinkTree(pTree, pRoot->pChild);
    pRoot = pRoot->pSibling;
  }
  if( pTree->pLast ) pTree->pLast->pNext = 0;
}


/*
** WEBPAGE: tree
**
** Show the files using a tree-view.  If the ci= query parameter is present
** then show only the files for the check-in identified.  If ci= is omitted,
** then show the union of files over all check-ins.
**
** The type=tree query parameter is required or else the /dir format is
** used.
**
** Query parameters:
**
**    type=tree        Required to prevent use of /dir format
**    name=PATH        Directory to display.  Optional
**    ci=LABEL         Show only files in this check-in.  Optional.
**    re=REGEXP        Show only files matching REGEXP.  Optional.
**    expand           Begin with the tree fully expanded.
**    nofiles          Show directories (folders) only.  Omit files.
**    sort             0: by filename, 1: by mtime, 2: by size
*/
void page_tree(void){
  char *zD = fossil_strdup(P("name"));
  int nD = zD ? strlen(zD)+1 : 0;
  const char *zCI = P("ci");
  int rid = 0;
  char *zUuid = 0;
  Blob dirname;
  Manifest *pM = 0;
  double rNow = 0;
  char *zNow = 0;
  int useMtime = atoi(PD("mtime","0"));
  int sortOrder = atoi(PD("sort",useMtime?"1":"0"));
  int linkTrunk = 1;       /* include link to "trunk" */
  int linkTip = 1;         /* include link to "tip" */
  const char *zRE;         /* the value for the re=REGEXP query parameter */
  const char *zObjType;    /* "files" by default or "folders" for "nofiles" */
  char *zREx = "";         /* Extra parameters for path hyperlinks */
  ReCompiled *pRE = 0;     /* Compiled regular expression */
  FileTreeNode *p;         /* One line of the tree */
  FileTree sTree;          /* The complete tree of files */
  HQuery sURI;             /* Hyperlink */
  int startExpanded;       /* True to start out with the tree expanded */
  int showDirOnly;         /* Show directories only.  Omit files */
  int nDir = 0;            /* Number of directories. Used for ID attributes */
  char *zProjectName = db_get("project-name", 0);
  int isSymbolicCI = 0;    /* ci= is a symbolic name, not a hash prefix */
  int isBranchCI = 0;      /* ci= refers to a branch name */
  char *zHeader = 0;

  if( zCI && strlen(zCI)==0 ){ zCI = 0; }
  if( strcmp(PD("type","flat"),"flat")==0 ){ page_dir(); return; }
  memset(&sTree, 0, sizeof(sTree));
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  while( nD>1 && zD[nD-2]=='/' ){ zD[(--nD)-1] = 0; }
  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);
  url_initialize(&sURI, "tree");
  cgi_query_parameters_to_url(&sURI);
  if( PB("nofiles") ){
    showDirOnly = 1;
  }else{
    showDirOnly = 0;
  }
  style_adunit_config(ADUNIT_RIGHT_OK);
  if( PB("expand") ){
    startExpanded = 1;
  }else{
    startExpanded = 0;
  }

  /* If a regular expression is specified, compile it */
  zRE = P("re");
  if( zRE ){
    re_compile(&pRE, zRE, 0);
    zREx = mprintf("&re=%T", zRE);
  }
  cgi_check_for_malice();

  /* If the name= parameter is an empty string, make it a NULL pointer */
  if( zD && strlen(zD)==0 ){ zD = 0; }

  /* If a specific check-in is requested, fetch and parse it.  If the
  ** specific check-in does not exist, clear zCI.  zCI==0 will cause all
  ** files from all check-ins to be displayed.
  */
  if( zCI ){
    pM = manifest_get_by_name(zCI, &rid);
    if( pM ){
      int trunkRid = symbolic_name_to_rid("tag:trunk", "ci");
      linkTrunk = trunkRid && rid != trunkRid;
      linkTip = rid != symbolic_name_to_rid("tip", "ci");
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      rNow = db_double(0.0, "SELECT mtime FROM event WHERE objid=%d", rid);
      zNow = db_text("", "SELECT datetime(mtime,toLocal())"
                         " FROM event WHERE objid=%d", rid);
      isSymbolicCI = (sqlite3_strnicmp(zUuid, zCI, strlen(zCI)) != 0);
      isBranchCI = branch_includes_uuid(zCI, zUuid);
      Th_Store("current_checkin", zCI);
    }else{
      zCI = 0;
    }
  }
  if( zCI==0 ){
    rNow = db_double(0.0, "SELECT max(mtime) FROM event");
    zNow = db_text("", "SELECT datetime(max(mtime),toLocal()) FROM event");
  }

  assert( isSymbolicCI==0 || (zCI!=0 && zCI[0]!=0) );
  if( zD==0 ){
    if( zCI ){
      zHeader = mprintf("Top-level Files of %s", zCI);
    }else{
      zHeader = mprintf("All Top-level Files");
    }
  }else{
    if( zCI ){
      zHeader = mprintf("Files in %s/ of %s", zD, zCI);
    }else{
      zHeader = mprintf("All Files in %s/", zD);
    }
  }
  style_header("%s", zHeader);
  fossil_free(zHeader);

  /* Compute the title of the page */
  blob_zero(&dirname);
  if( zD ){
    blob_append(&dirname, "within directory ", -1);
    hyperlinked_path(zD, &dirname, zCI, "tree", zREx, 0);
    if( zRE ) blob_appendf(&dirname, " matching \"%s\"", zRE);
    style_submenu_element("Top-Level", "%s",
                          url_render(&sURI, "name", 0, 0, 0));
  }else if( zRE ){
    blob_appendf(&dirname, "matching \"%s\"", zRE);
  }
  {
    static const char *const sort_orders[] = {
       "0", "Sort By Filename",
       "1", "Sort By Age",
       "2", "Sort By Size"
    };
    style_submenu_multichoice("sort", 3, sort_orders, 0);
  }
  if( zCI ){
    style_submenu_element("All", "%s", url_render(&sURI, "ci", 0, 0, 0));
    if( nD==0 && !showDirOnly ){
      style_submenu_element("File Ages", "%R/fileage?name=%T", zCI);
    }
  }
  if( linkTrunk ){
    style_submenu_element("Trunk", "%s",
                          url_render(&sURI, "ci", "trunk", 0, 0));
  }
  if( linkTip ){
    style_submenu_element("Tip", "%s", url_render(&sURI, "ci", "tip", 0, 0));
  }
  style_submenu_element("Flat-View", "%s",
                        url_render(&sURI, "type", "flat", 0, 0));

  /* Compute the file hierarchy.
  */
  if( zCI ){
    Stmt q;
    compute_fileage(rid, 0);
    db_prepare(&q,
       "SELECT filename.name, blob.uuid, blob.size, fileage.mtime\n"
       "  FROM fileage, filename, blob\n"
       " WHERE filename.fnid=fileage.fnid\n"
       "   AND blob.rid=fileage.fid\n"
       " ORDER BY filename.name COLLATE uintnocase;"
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zFile = db_column_text(&q,0);
      const char *zUuid = db_column_text(&q,1);
      int size = db_column_int(&q,2);
      double mtime = db_column_double(&q,3);
      if( nD>0 && (fossil_strncmp(zFile, zD, nD-1)!=0 || zFile[nD-1]!='/') ){
        continue;
      }
      if( pRE && re_match(pRE, (const unsigned char*)zFile, -1)==0 ) continue;
      tree_add_node(&sTree, zFile, zUuid, mtime, size, sortOrder);
    }
    db_finalize(&q);
  }else{
    Stmt q;
    db_prepare(&q,
      "WITH mx(fnid,fid,mtime) AS (\n"
      "  SELECT fnid, fid, max(event.mtime)\n"
      "    FROM mlink, event\n"
      "   WHERE event.objid=mlink.mid\n"
      "   GROUP BY 1\n"
      ")\n"
      "SELECT\n"
      "  filename.name,\n"
      "  blob.uuid,\n"
      "  blob.size,\n"
      "  mx.mtime\n"
      "FROM mx\n"
      " LEFT JOIN filename ON filename.fnid=mx.fnid\n"
      " LEFT JOIN blob ON blob.rid=mx.fid\n"
      " ORDER BY 1 COLLATE uintnocase;");
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      const char *zUuid = db_column_text(&q,1);
      int size = db_column_int(&q,2);
      double mtime = db_column_double(&q,3);
      if( nD>0 && (fossil_strncmp(zName, zD, nD-1)!=0 || zName[nD-1]!='/') ){
        continue;
      }
      if( pRE && re_match(pRE, (const u8*)zName, -1)==0 ) continue;
      tree_add_node(&sTree, zName, zUuid, mtime, size, sortOrder);
    }
    db_finalize(&q);
  }
  style_submenu_checkbox("nofiles", "Folders Only", 0, 0);

  if( showDirOnly ){
    zObjType = "Folders";
  }else{
    zObjType = "Files";
  }

  if( zCI && strcmp(zCI,"tip")==0 ){
    @ <h2>%s(zObjType) in the %z(href("%R/info?name=tip"))latest check-in</a>
  }else if( isBranchCI ){
    @ <h2>%s(zObjType) in the %z(href("%R/info?name=%T",zCI))latest check-in\
    @ </a> for branch %z(href("%R/timeline?r=%T",zCI))%h(zCI)</a>
    if( blob_size(&dirname) ){
      @ and %s(blob_str(&dirname))
    }
  }else if( zCI ){
    @ <h2>%s(zObjType) for check-in \
    @ %z(href("%R/info?name=%T",zCI))%h(zCI)</a>
    if( blob_size(&dirname) ){
      @ and %s(blob_str(&dirname))
    }
  }else{
    int n = db_int(0, "SELECT count(*) FROM plink");
    @ <h2>%s(zObjType) from all %d(n) check-ins %s(blob_str(&dirname))
  }
  if( sortOrder==1 ){
    @ sorted by modification time</h2>
  }else if( sortOrder==2 ){
    @ sorted by size</h2>
  }else{
    @ sorted by filename</h2>
  }

  if( zNow ){
    @ <p>File ages are expressed relative to the check-in time of
    @ %z(href("%R/timeline?c=%t",zNow))%s(zNow)</a>.</p>
  }

  /* Generate tree of lists.
  **
  ** Each file and directory is a list element: <li>.  Files have class=file
  ** and if the filename as the suffix "xyz" the file also has class=file-xyz.
  ** Directories have class=dir.  The directory specfied by the name= query
  ** parameter (or the top-level directory if there is no name= query parameter)
  ** adds class=subdir.
  **
  ** The <li> element for directories also contains a sublist <ul>
  ** for the contents of that directory.
  */
  @ <div class="filetree"><ul>
  if( nD ){
    @ <li class="dir last">
  }else{
    @ <li class="dir subdir last">
  }
  @ <div class="filetreeline">
  @ %z(href("%s",url_render(&sURI,"name",0,0,0)))%h(zProjectName)</a>
  if( zNow ){
    @ <div class="filetreeage">Last Change</div>
    @ <div class="filetreesize">Size</div>
  }
  @ </div>
  @ <ul>
  if( sortOrder ){
    p = sortTree(sTree.pFirst);
    memset(&sTree, 0, sizeof(sTree));
    relinkTree(&sTree, p);
  }
  for(p=sTree.pFirst, nDir=0; p; p=p->pNext){
    const char *zLastClass = p->pSibling==0 ? " last" : "";
    if( p->pChild ){
      const char *zSubdirClass = (int)(p->nFullName)==nD-1 ? " subdir" : "";
      @ <li class="dir%s(zSubdirClass)%s(zLastClass)"><div class="filetreeline">
      @ %z(href("%s",url_render(&sURI,"name",p->zFullName,0,0)))%h(p->zName)</a>
      if( p->mtime>0.0 ){
        char *zAge = human_readable_age(rNow - p->mtime);
        @ <div class="filetreeage">%s(zAge)</div>
        @ <div class="filetreesize"></div>
      }
      @ </div>
      if( startExpanded || (int)(p->nFullName)<=nD ){
        @ <ul id="dir%d(nDir)">
      }else{
        @ <ul id="dir%d(nDir)" class="collapsed">
      }
      nDir++;
    }else if( !showDirOnly ){
      const char *zFileClass = fileext_class(p->zName);
      char *zLink;
      if( zCI ){
        zLink = href("%R/file?name=%T&ci=%T",p->zFullName,zCI);
      }else{
        zLink = href("%R/finfo?name=%T",p->zFullName);
      }
      @ <li class="%z(zFileClass)%s(zLastClass)"><div class="filetreeline">
      @ %z(zLink)%h(p->zName)</a>
      if( p->mtime>0 ){
        char *zAge = human_readable_age(rNow - p->mtime);
        @ <div class="filetreeage">%s(zAge)</div>
        @ <div class="filetreesize">%s(p->iSize ? mprintf("%,d",p->iSize) : "-")</div>
      }
      @ </div>
    }
    if( p->pSibling==0 ){
      int nClose = p->iLevel - (p->pNext ? p->pNext->iLevel : 0);
      while( nClose-- > 0 ){
        @ </ul>
      }
    }
  }
  @ </ul>
  @ </ul></div>
  builtin_request_js("tree.js");
  style_finish_page();

  /* We could free memory used by sTree here if we needed to.  But
  ** the process is about to exit, so doing so would not really accomplish
  ** anything useful. */
}

/*
** Return a CSS class name based on the given filename's extension.
** Result must be freed by the caller.
**/
const char *fileext_class(const char *zFilename){
  char *zClass;
  const char *zExt = strrchr(zFilename, '.');
  int isExt = zExt && zExt!=zFilename && zExt[1];
  int i;
  for( i=1; isExt && zExt[i]; i++ ) isExt &= fossil_isalnum(zExt[i]);
  if( isExt ){
    zClass = mprintf("file file-%s", zExt+1);
    for( i=5; zClass[i]; i++ ) zClass[i] = fossil_tolower(zClass[i]);
  }else{
    zClass = mprintf("file");
  }
  return zClass;
}

/*
** SQL used to compute the age of all files in check-in :ckin whose
** names match :glob
*/
static const char zComputeFileAgeSetup[] =
@ CREATE TABLE IF NOT EXISTS temp.fileage(
@   fnid INTEGER PRIMARY KEY,
@   fid INTEGER,
@   mid INTEGER,
@   mtime DATETIME,
@   pathname TEXT
@ );
@ CREATE VIRTUAL TABLE IF NOT EXISTS temp.foci USING files_of_checkin;
;

static const char zComputeFileAgeRun[] =
@ WITH RECURSIVE
@  ckin(x) AS (VALUES(:ckin)
@              UNION
@              SELECT plink.pid
@                FROM ckin, plink
@               WHERE plink.cid=ckin.x)
@ INSERT OR IGNORE INTO fileage(fnid, fid, mid, mtime, pathname)
@   SELECT filename.fnid, mlink.fid, mlink.mid, event.mtime, filename.name
@     FROM foci, filename, blob, mlink, event
@    WHERE foci.checkinID=:ckin
@      AND foci.filename GLOB :glob
@      AND filename.name=foci.filename
@      AND blob.uuid=foci.uuid
@      AND mlink.fid=blob.rid
@      AND mlink.fid!=mlink.pid
@      AND mlink.mid IN (SELECT x FROM ckin)
@      AND event.objid=mlink.mid
@  ORDER BY event.mtime ASC;
;

/*
** Look at all file containing in the version "vid".  Construct a
** temporary table named "fileage" that contains the file-id for each
** files, the pathname, the check-in where the file was added, and the
** mtime on that check-in. If zGlob and *zGlob then only files matching
** the given glob are computed.
*/
int compute_fileage(int vid, const char* zGlob){
  Stmt q;
  db_exec_sql(zComputeFileAgeSetup);
  db_prepare(&q, zComputeFileAgeRun  /*works-like:"constant"*/);
  db_bind_int(&q, ":ckin", vid);
  db_bind_text(&q, ":glob", zGlob && zGlob[0] ? zGlob : "*");
  db_exec(&q);
  db_finalize(&q);
  return 0;
}

/*
** Render the number of days in rAge as a more human-readable time span.
** Different units (seconds, minutes, hours, days, months, years) are
** selected depending on the magnitude of rAge.
**
** The string returned is obtained from fossil_malloc() and should be
** freed by the caller.
*/
char *human_readable_age(double rAge){
  if( rAge*86400.0<120 ){
    if( rAge*86400.0<1.0 ){
      return mprintf("current");
    }else{
      @ <li><a href="%s(g.zBaseURL)/finfo?name=%T(zPrefix)%T(zFN)">%h(zFN)</a>
      return mprintf("%d seconds", (int)(rAge*86400.0));
    }
  }else if( rAge*1440.0<90 ){
    return mprintf("%.1f minutes", rAge*1440.0);
  }else if( rAge*24.0<36 ){
    return mprintf("%.1f hours", rAge*24.0);
  }else if( rAge<365.0 ){
    return mprintf("%.1f days", rAge);
  }else{
    return mprintf("%.2f years", rAge/365.2425);
  }
}

/*
** COMMAND: test-fileage
**
** Usage: %fossil test-fileage CHECKIN
*/
void test_fileage_cmd(void){
  int mid;
  Stmt q;
  const char *zGlob = find_option("glob",0,1);
  db_find_and_open_repository(0,0);
  verify_all_options();
  if( g.argc!=3 ) usage("CHECKIN");
  mid = name_to_typed_rid(g.argv[2],"ci");
  compute_fileage(mid, zGlob);
  db_prepare(&q,
    "SELECT fid, mid, julianday('now') - mtime, pathname"
    "  FROM fileage"
  );
  while( db_step(&q)==SQLITE_ROW ){
    char *zAge = human_readable_age(db_column_double(&q,2));
    fossil_print("%8d %8d %16s %s\n",
      db_column_int(&q,0),
      db_column_int(&q,1),
      zAge,
      db_column_text(&q,3));
    fossil_free(zAge);
  }
  db_finalize(&q);
}

/*
** WEBPAGE: fileage
**
** Show all files in a single check-in (identified by the name= query
** parameter) in order of increasing age.
**
** Parameters:
**   name=VERSION   Selects the check-in version (default=tip).
**   glob=STRING    Only shows files matching this glob pattern
**                  (e.g. *.c or *.txt).
**   showid         Show RID values for debugging
*/
void fileage_page(void){
  int rid;
  const char *zName;
  const char *zGlob;
  const char *zUuid;
  const char *zNow;            /* Time of check-in */
  int isBranchCI;              /* name= is a branch name */
  int showId = PB("showid");
  Stmt q1, q2;
  double baseTime;
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  if( exclude_spiders(0) ) return;
  zName = P("name");
  if( zName==0 ) zName = "tip";
  rid = symbolic_name_to_rid(zName, "ci");
  if( rid==0 ){
    fossil_fatal("not a valid check-in: %s", zName);
  }
  zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
  isBranchCI = branch_includes_uuid(zName,zUuid);
  baseTime = db_double(0.0,"SELECT mtime FROM event WHERE objid=%d", rid);
  zNow = db_text("", "SELECT datetime(mtime,toLocal()) FROM event"
                     " WHERE objid=%d", rid);
  style_submenu_element("Tree-View", "%R/tree?ci=%T&mtime=1&type=tree", zName);
  style_header("File Ages");
  zGlob = P("glob");
  cgi_check_for_malice();
  compute_fileage(rid,zGlob);
  db_multi_exec("CREATE INDEX fileage_ix1 ON fileage(mid,pathname);");

  if( fossil_strcmp(zName,"tip")==0 ){
    @ <h1>Files in the %z(href("%R/info?name=tip"))latest check-in</a>
  }else if( isBranchCI ){
    @ <h1>Files in the %z(href("%R/info?name=%T",zName))latest check-in</a>
    @ of branch %z(href("%R/timeline?r=%T",zName))%h(zName)</a>
  }else{
    @ <h1>Files in check-in %z(href("%R/info?name=%T",zName))%h(zName)</a>
  }
  if( zGlob && zGlob[0] ){
    @ that match "%h(zGlob)"
  }
  @ ordered by age</h1>
  @
  @ <p>File ages are expressed relative to the check-in time of
  @ %z(href("%R/timeline?c=%t",zNow))%s(zNow)</a>.</p>
  @
  @ <div class='fileage'><table>
  @ <tr><th>Age</th><th>Files</th><th>Check-in</th></tr>
  db_prepare(&q1,
    "SELECT event.mtime, event.objid, blob.uuid,\n"
    "       coalesce(event.ecomment,event.comment),\n"
    "       coalesce(event.euser,event.user),\n"
    "       coalesce((SELECT value FROM tagxref\n"
    "                  WHERE tagtype>0 AND tagid=%d\n"
    "                    AND rid=event.objid),'trunk')\n"
    "  FROM event, blob\n"
    " WHERE event.objid IN (SELECT mid FROM fileage)\n"
    "   AND blob.rid=event.objid\n"
    " ORDER BY event.mtime DESC;",
    TAG_BRANCH
  );
  db_prepare(&q2,
    "SELECT filename.name, fileage.fid\n"
    "  FROM fileage, filename\n"
    " WHERE fileage.mid=:mid AND filename.fnid=fileage.fnid"
  );
  while( db_step(&q1)==SQLITE_ROW ){
    double age = baseTime - db_column_double(&q1, 0);
    int mid = db_column_int(&q1, 1);
    const char *zUuid = db_column_text(&q1, 2);
    const char *zComment = db_column_text(&q1, 3);
    const char *zUser = db_column_text(&q1, 4);
    const char *zBranch = db_column_text(&q1, 5);
    char *zAge = human_readable_age(age);
    @ <tr><td>%s(zAge)</td>
    @ <td>
    db_bind_int(&q2, ":mid", mid);
    while( db_step(&q2)==SQLITE_ROW ){
      const char *zFile = db_column_text(&q2,0);
      @ %z(href("%R/file?name=%T&ci=%!S",zFile,zUuid))%h(zFile)</a> \
      if( showId ){
        int fid = db_column_int(&q2,1);
        @ (%d(fid))<br>
      }else{
        @ </a><br>
      }
    }
    db_reset(&q2);
    @ </td>
    @ <td>
    @ %W(zComment)
    @ (check-in:&nbsp;%z(href("%R/info/%!S",zUuid))%S(zUuid)</a>,
    if( showId ){
      @ id: %d(mid)
    }
    @ user:&nbsp;%z(href("%R/timeline?u=%t&c=%!S&nd",zUser,zUuid))%h(zUser)</a>,
    @ branch:&nbsp;\
    @ %z(href("%R/timeline?r=%t&c=%!S&nd",zBranch,zUuid))%h(zBranch)</a>)
  @ </td></tr></table>
  style_footer();
    @ </td></tr>
    @
    fossil_free(zAge);
  }
  @ </table></div>
  db_finalize(&q1);
  db_finalize(&q2);
  style_finish_page();
}
Added src/builtin.c.






































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains built-in string and BLOB resources packaged as
** byte arrays.
*/
#include "config.h"
#include "builtin.h"
#include <assert.h>

/*
** The resources provided by this file are packaged by the "mkbuiltin.c"
** utility program during the built process and stored in the
** builtin_data.h file.  Include that information here:
*/
#include "builtin_data.h"

/*
** Return the index in the aBuiltinFiles[] array for the file
** whose name is zFilename.  Or return -1 if the file is not
** found.
*/
static int builtin_file_index(const char *zFilename){
  int lwr, upr, i, c;
  lwr = 0;
  upr = count(aBuiltinFiles) - 1;
  while( upr>=lwr ){
    i = (upr+lwr)/2;
    c = strcmp(aBuiltinFiles[i].zName,zFilename);
    if( c<0 ){
      lwr = i+1;
    }else if( c>0 ){
      upr = i-1;
    }else{
      return i;
    }
  }
  return -1;
}

/*
** Return a pointer to built-in content
*/
const unsigned char *builtin_file(const char *zFilename, int *piSize){
  int i = builtin_file_index(zFilename);
  if( i>=0 ){
    if( piSize ) *piSize = aBuiltinFiles[i].nByte;
    return aBuiltinFiles[i].pData;
  }else{
    if( piSize ) *piSize = 0;
    return 0;
  }
}
const char *builtin_text(const char *zFilename){
  return (char*)builtin_file(zFilename, 0);
}

/*
** COMMAND: test-builtin-list
**
** If -verbose is used, it outputs a line at the end
** with the total item count and size.
**
** List the names and sizes of all built-in resources.
*/
void test_builtin_list(void){
  int i, size = 0;;
  for(i=0; i<count(aBuiltinFiles); i++){
    const int n = aBuiltinFiles[i].nByte;
    fossil_print("%3d. %-45s %6d\n", i+1, aBuiltinFiles[i].zName,n);
    size += n;
  }
  if(find_option("verbose","v",0)!=0){
    fossil_print("%d entries totaling %d bytes\n", i, size);
  }
}

/*
** WEBPAGE: test-builtin-files
**
** Show all built-in text files.
*/
void test_builtin_list_page(void){
  int i;
  style_set_current_feature("test");
  style_header("Built-in Text Files");
  @ <ol>
  for(i=0; i<count(aBuiltinFiles); i++){
    const char *z = aBuiltinFiles[i].zName;
    char *zUrl = href("%R/builtin?name=%T&id=%.8s&mimetype=text/plain",
           z,fossil_exe_id());
    @ <li>%z(zUrl)%h(z)</a>
  }
  @ </ol>
  style_finish_page();
}

/*
** COMMAND: test-builtin-get
**
** Usage: %fossil test-builtin-get NAME ?OUTPUT-FILE?
*/
void test_builtin_get(void){
  const unsigned char *pData;
  int nByte;
  Blob x;
  if( g.argc!=3 && g.argc!=4 ){
    usage("NAME ?OUTPUT-FILE?");
  }
  pData = builtin_file(g.argv[2], &nByte);
  if( pData==0 ){
    fossil_fatal("no such built-in file: [%s]", g.argv[2]);
  }
  blob_init(&x, (const char*)pData, nByte);
  blob_write_to_file(&x, g.argc==4 ? g.argv[3] : "-");
  blob_reset(&x);
}

/*
** Input zList is a list of numeric identifiers for files in
** aBuiltinFiles[].  Return the concatenation of all of those files
** using mimetype zType, or as text/javascript if zType is 0.
*/
static void builtin_deliver_multiple_js_files(
  const char *zList,   /* List of numeric identifiers */
  const char *zType    /* Override mimetype */
){
  Blob *pOut;
  if( zType==0 ) zType = "text/javascript";
  cgi_set_content_type(zType);
  pOut = cgi_output_blob();
  while( zList[0] ){
    int i = atoi(zList);
    if( i>0 && i<=count(aBuiltinFiles) ){
      blob_appendf(pOut, "/* %s */\n", aBuiltinFiles[i-1].zName);
      blob_append(pOut, (const char*)aBuiltinFiles[i-1].pData,
                  aBuiltinFiles[i-1].nByte);
    }
    while( zList[0] && fossil_isdigit(zList[0]) ) zList++;
    while( zList[0] && !fossil_isdigit(zList[0]) ) zList++;
  }
  return;
}

/*
** WEBPAGE: builtin loadavg-exempt
**
** Return one of many built-in content files.  Query parameters:
**
**    name=FILENAME       Return the single file whose name is FILENAME.
**    mimetype=TYPE       Override the mimetype in the returned file to
**                        be TYPE.  If this query parameter is omitted
**                        (the usual case) then the mimetype is inferred
**                        from the suffix on FILENAME
**    m=IDLIST            IDLIST is a comma-separated list of integers
**                        that specify multiple javascript files to be
**                        concatenated and returned all at once.
**    id=UNIQUEID         Version number of the "builtin" files.  Used
**                        for cache control only.
**
** At least one of the name= or m= query parameters must be present.
**
** If the id= query parameter is present, then Fossil assumes that the
** result is immutable and sets a very large cache retention time (1 year).
*/
void builtin_webpage(void){
  Blob out;
  const char *zName = P("name");
  const char *zContent = 0;
  int nContent = 0;
  const char *zId = P("id");
  const char *zType = P("mimetype");
  int nId;
  if( zName ) zContent = (const char *)builtin_file(zName, &nContent);
  if( zContent==0 ){
    const char *zM = P("m");
    if( zM ){
      if( zId && (nId = (int)strlen(zId))>=8
       && strncmp(zId,fossil_exe_id(),nId)==0
      ){
        g.isConst = 1;
      }
      etag_check(0,0);
      builtin_deliver_multiple_js_files(zM, zType);
      return;
    }
    cgi_set_status(404, "Not Found");
    @ File "%h(zName)" not found
    return;
  }
  if( zType==0 ){
    if( sqlite3_strglob("*.js", zName)==0 ){
      zType = "text/javascript";
    }else{
      zType = mimetype_from_name(zName);
    }
  }
  cgi_set_content_type(zType);
  if( zId
   && (nId = (int)strlen(zId))>=8
   && strncmp(zId,fossil_exe_id(),nId)==0
  ){
    g.isConst = 1;
  }
  etag_check(0,0);
  blob_init(&out, zContent, nContent);
  cgi_set_content(&out);
}

/* Variables controlling the JS cache.
*/
static struct {
  int aReq[30];        /* Indexes of all requested built-in JS files */
  int nReq;            /* Number of slots in aReq[] currently used */
  int nSent;           /* Number of slots in aReq[] fulfilled */
  int eDelivery;       /* Delivery mechanism */
} builtin;

#if INTERFACE
/* Various delivery mechanisms.  The 0 option is the default.
** MAINTENANCE NOTE: Review/update the builtin_set_js_delivery_mode() and
** builtin_get_js_delivery_mode_name() functions if values are changed/added.
*/
#define JS_INLINE   0    /* inline, batched together at end of file */
#define JS_SEPARATE 1    /* Separate HTTP request for each JS file */
#define JS_BUNDLED  2    /* One HTTP request to load all JS files */
                         /* concatenated together into a bundle */
#endif /* INTERFACE */

/*
** The argument is a request to change the javascript delivery mode.
** The argument is a string which is a command-line option or CGI
** parameter.  Try to match it against one of the delivery options
** and set things up accordingly.  Throw an error if no match unless
** bSilent is true.
*/
void builtin_set_js_delivery_mode(const char *zMode, int bSilent){
  if( zMode==0 ) return;
  if( strcmp(zMode, "inline")==0 ){
    builtin.eDelivery = JS_INLINE;
  }else
  if( strcmp(zMode, "separate")==0 ){
    builtin.eDelivery = JS_SEPARATE;
  }else
  if( strcmp(zMode, "bundled")==0 ){
    builtin.eDelivery = JS_BUNDLED;
  }else if( !bSilent ){
    fossil_fatal("unknown javascript delivery mode \"%s\" - should be"
                 " one of: inline separate bundled", zMode);
  }
}

/*
** Returns the current JS delivery mode: one of JS_INLINE,
** JS_SEPARATE, JS_BUNDLED.
*/
int builtin_get_js_delivery_mode(void){
  return builtin.eDelivery;
}

/*
** Returns the name of the current JS delivery mode for reuse with the --jsmode
** option, i.e. the other way around than builtin_set_js_delivery_mode().
*/
const char *builtin_get_js_delivery_mode_name(void){
  switch( builtin.eDelivery ){
    case JS_SEPARATE: {
      return "separate";
    }
    case JS_BUNDLED: {
      return "bundled";
    }
    case JS_INLINE:
      /*FALLTHROUGH*/
    default: {
      return "inline";
    }
  }
}

/*
** The caller wants the Javascript file named by zFilename to be
** included in the generated page.  Add the file to the queue of
** requested javascript resources, if it is not there already.
**
** The current implementation queues the file to be included in the
** output later.  However, the caller should not depend on that
** behavior.  In the future, this routine might decide to insert
** the requested javascript inline, immedaitely, or to insert
** a <script src=..> element to reference the javascript as a
** separate resource.  The exact behavior might change in the future
** so pages that use this interface must not rely on any particular
** behavior.
**
** All this routine guarantees is that the named javascript file
** will be requested by the browser at some point.  This routine
** does not guarantee when the javascript will be included, and it
** does not guarantee whether the javascript will be added inline or
** delivered as a separate resource.
*/
void builtin_request_js(const char *zFilename){
  int i = builtin_file_index(zFilename);
  int j;
  if( i<0 ){
    fossil_panic("unknown javascript file: \"%s\"", zFilename);
  }
  for(j=0; j<builtin.nReq; j++){
    if( builtin.aReq[j]==i ) return;  /* Already queued or sent */
  }
  if( builtin.nReq>=count(builtin.aReq) ){
    fossil_panic("too many javascript files requested");
  }
  builtin.aReq[builtin.nReq++] = i;
}

/*
** Fulfill all pending requests for javascript files.
**
** The current implementation delivers all javascript in-line.  However,
** the caller should not depend on this.  Future changes to this routine
** might choose to deliver javascript as separate resources.
*/
void builtin_fulfill_js_requests(void){
  if( builtin.nSent>=builtin.nReq ) return;  /* nothing to do */
  switch( builtin.eDelivery ){
    case JS_INLINE: {
      CX("<script nonce='%h'>\n",style_nonce());
      do{
        int i = builtin.aReq[builtin.nSent++];
        CX("/* %s %.60c*/\n", aBuiltinFiles[i].zName, '*');
        cgi_append_content((const char*)aBuiltinFiles[i].pData,
                           aBuiltinFiles[i].nByte);
      }while( builtin.nSent<builtin.nReq );
      CX("</script>\n");
      break;
    }
    case JS_BUNDLED: {
      if( builtin.nSent+1<builtin.nReq ){
        Blob aList;
        blob_init(&aList,0,0);
        while( builtin.nSent<builtin.nReq ){
          blob_appendf(&aList, ",%d", builtin.aReq[builtin.nSent++]+1);
        }
        CX("<script src='%R/builtin?m=%s&id=%.8s'></script>\n",
           blob_str(&aList)+1, fossil_exe_id());
        blob_reset(&aList);
        break;
      }
      /* If there is only one JS file, fall through into the
      ** JS_SEPARATE case below. */
      /*FALLTHROUGH*/
    }
    case JS_SEPARATE: {
      /* Each JS file as a separate resource */
      while( builtin.nSent<builtin.nReq ){
        int i = builtin.aReq[builtin.nSent++];
        CX("<script src='%R/builtin?name=%t&id=%.8s'></script>\n",
              aBuiltinFiles[i].zName, fossil_exe_id());
      }
      break;
    }
  }
}

/*****************************************************************************
** A virtual table for accessing the information in aBuiltinFiles[].
*/

/* builtinVtab_vtab is a subclass of sqlite3_vtab which is
** underlying representation of the virtual table
*/
typedef struct builtinVtab_vtab builtinVtab_vtab;
struct builtinVtab_vtab {
  sqlite3_vtab base;  /* Base class - must be first */
  /* Add new fields here, as necessary */
};

/* builtinVtab_cursor is a subclass of sqlite3_vtab_cursor which will
** serve as the underlying representation of a cursor that scans
** over rows of the result
*/
typedef struct builtinVtab_cursor builtinVtab_cursor;
struct builtinVtab_cursor {
  sqlite3_vtab_cursor base;  /* Base class - must be first */
  /* Insert new fields here.  For this builtinVtab we only keep track
  ** of the rowid */
  sqlite3_int64 iRowid;      /* The rowid */
};

/*
** The builtinVtabConnect() method is invoked to create a new
** builtin virtual table.
**
** Think of this routine as the constructor for builtinVtab_vtab objects.
**
** All this routine needs to do is:
**
**    (1) Allocate the builtinVtab_vtab object and initialize all fields.
**
**    (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the
**        result set of queries against the virtual table will look like.
*/
static int builtinVtabConnect(
  sqlite3 *db,
  void *pAux,
  int argc, const char *const*argv,
  sqlite3_vtab **ppVtab,
  char **pzErr
){
  builtinVtab_vtab *pNew;
  int rc;

  rc = sqlite3_declare_vtab(db,
           "CREATE TABLE x(name,size,data)"
       );
  if( rc==SQLITE_OK ){
    pNew = sqlite3_malloc( sizeof(*pNew) );
    *ppVtab = (sqlite3_vtab*)pNew;
    if( pNew==0 ) return SQLITE_NOMEM;
    memset(pNew, 0, sizeof(*pNew));
  }
  return rc;
}

/*
** This method is the destructor for builtinVtab_vtab objects.
*/
static int builtinVtabDisconnect(sqlite3_vtab *pVtab){
  builtinVtab_vtab *p = (builtinVtab_vtab*)pVtab;
  sqlite3_free(p);
  return SQLITE_OK;
}

/*
** Constructor for a new builtinVtab_cursor object.
*/
static int builtinVtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
  builtinVtab_cursor *pCur;
  pCur = sqlite3_malloc( sizeof(*pCur) );
  if( pCur==0 ) return SQLITE_NOMEM;
  memset(pCur, 0, sizeof(*pCur));
  *ppCursor = &pCur->base;
  return SQLITE_OK;
}

/*
** Destructor for a builtinVtab_cursor.
*/
static int builtinVtabClose(sqlite3_vtab_cursor *cur){
  builtinVtab_cursor *pCur = (builtinVtab_cursor*)cur;
  sqlite3_free(pCur);
  return SQLITE_OK;
}


/*
** Advance a builtinVtab_cursor to its next row of output.
*/
static int builtinVtabNext(sqlite3_vtab_cursor *cur){
  builtinVtab_cursor *pCur = (builtinVtab_cursor*)cur;
  pCur->iRowid++;
  return SQLITE_OK;
}

/*
** Return values of columns for the row at which the builtinVtab_cursor
** is currently pointing.
*/
static int builtinVtabColumn(
  sqlite3_vtab_cursor *cur,   /* The cursor */
  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
  int i                       /* Which column to return */
){
  builtinVtab_cursor *pCur = (builtinVtab_cursor*)cur;
  const struct BuiltinFileTable *pFile = aBuiltinFiles + pCur->iRowid - 1;
  switch( i ){
    case 0:  /* name */
      sqlite3_result_text(ctx, pFile->zName, -1, SQLITE_STATIC);
      break;
    case 1:  /* size */
      sqlite3_result_int(ctx, pFile->nByte);
      break;
    case 2:  /* data */
      sqlite3_result_blob(ctx, pFile->pData, pFile->nByte, SQLITE_STATIC);
      break;
  }
  return SQLITE_OK;
}

/*
** Return the rowid for the current row.  In this implementation, the
** rowid is the same as the output value.
*/
static int builtinVtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
  builtinVtab_cursor *pCur = (builtinVtab_cursor*)cur;
  *pRowid = pCur->iRowid;
  return SQLITE_OK;
}

/*
** Return TRUE if the cursor has been moved off of the last
** row of output.
*/
static int builtinVtabEof(sqlite3_vtab_cursor *cur){
  builtinVtab_cursor *pCur = (builtinVtab_cursor*)cur;
  return pCur->iRowid>count(aBuiltinFiles);
}

/*
** This method is called to "rewind" the builtinVtab_cursor object back
** to the first row of output.  This method is always called at least
** once prior to any call to builtinVtabColumn() or builtinVtabRowid() or
** builtinVtabEof().
*/
static int builtinVtabFilter(
  sqlite3_vtab_cursor *pVtabCursor,
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  builtinVtab_cursor *pCur = (builtinVtab_cursor *)pVtabCursor;
  pCur->iRowid = 1;
  return SQLITE_OK;
}

/*
** SQLite will invoke this method one or more times while planning a query
** that uses the virtual table.  This routine needs to create
** a query plan for each invocation and compute an estimated cost for that
** plan.
*/
static int builtinVtabBestIndex(
  sqlite3_vtab *tab,
  sqlite3_index_info *pIdxInfo
){
  pIdxInfo->estimatedCost = (double)count(aBuiltinFiles);
  pIdxInfo->estimatedRows = count(aBuiltinFiles);
  return SQLITE_OK;
}

/*
** This following structure defines all the methods for the
** virtual table.
*/
static sqlite3_module builtinVtabModule = {
  /* iVersion    */ 0,
  /* xCreate     */ 0,  /* The builtin vtab is eponymous and read-only */
  /* xConnect    */ builtinVtabConnect,
  /* xBestIndex  */ builtinVtabBestIndex,
  /* xDisconnect */ builtinVtabDisconnect,
  /* xDestroy    */ 0,
  /* xOpen       */ builtinVtabOpen,
  /* xClose      */ builtinVtabClose,
  /* xFilter     */ builtinVtabFilter,
  /* xNext       */ builtinVtabNext,
  /* xEof        */ builtinVtabEof,
  /* xColumn     */ builtinVtabColumn,
  /* xRowid      */ builtinVtabRowid,
  /* xUpdate     */ 0,
  /* xBegin      */ 0,
  /* xSync       */ 0,
  /* xCommit     */ 0,
  /* xRollback   */ 0,
  /* xFindMethod */ 0,
  /* xRename     */ 0,
  /* xSavepoint  */ 0,
  /* xRelease    */ 0,
  /* xRollbackTo */ 0,
  /* xShadowName */ 0,
  /* xIntegrity  */ 0
};


/*
** Register the builtin virtual table
*/
int builtin_vtab_register(sqlite3 *db){
  int rc = sqlite3_create_module(db, "builtin", &builtinVtabModule, 0);
  return rc;
}
/* End of the builtin virtual table
******************************************************************************/


/*
** The first time this is called, it emits code to install and
** bootstrap the window.fossil object, using the built-in file
** fossil.bootstrap.js (not to be confused with bootstrap.js).
**
** Subsequent calls are no-ops.
**
** It emits 2 parts:
**
** 1) window.fossil core object, some of which depends on C-level
** runtime data. That part of the script is always emitted inline. If
** addScriptTag is true then it is wrapped in its own SCRIPT tag, else
** it is assumed that the caller already opened a tag.
**
** 2) Emits the static fossil.bootstrap.js using builtin_request_js().
*/
void builtin_emit_script_fossil_bootstrap(int addScriptTag){
  static int once = 0;
  if(0==once++){
    char * zName;
    /* Set up the generic/app-agnostic parts of window.fossil
    ** which require C-level state... */
    if(addScriptTag!=0){
      style_script_begin(__FILE__,__LINE__);
    }
    CX("(function(){\n");
    CX(/*MSIE NodeList.forEach polyfill, courtesy of Mozilla:
    https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach#Polyfill
       */
       "if(window.NodeList && !NodeList.prototype.forEach){"
       "NodeList.prototype.forEach = Array.prototype.forEach;"
       "}\n");
    CX("if(!window.fossil) window.fossil={};\n"
       "window.fossil.version = %!j;\n"
    /* fossil.rootPath is the top-most CGI/server path,
    ** including a trailing slash. */
       "window.fossil.rootPath = %!j+'/';\n",
       get_version(), g.zTop);
    /* fossil.config = {...various config-level options...} */
    CX("window.fossil.config = {");
    zName = db_get("project-name", "");
    CX("projectName: %!j,\n", zName);
    fossil_free(zName);
    zName = db_get("short-project-name", "");
    CX("shortProjectName: %!j,\n", zName);
    fossil_free(zName);
    zName = db_get("project-code", "");
    CX("projectCode: %!j,\n", zName);
    fossil_free(zName);
    CX("/* Length of UUID hashes for display purposes. */");
    CX("hashDigits: %d, hashDigitsUrl: %d,\n",
       hash_digits(0), hash_digits(1));
    CX("diffContextLines: %d,\n",
       diff_context_lines(0));
    CX("editStateMarkers: {"
       "/*Symbolic markers to denote certain edit states.*/"
       "isNew:'[+]', isModified:'[*]', isDeleted:'[-]'},\n");
    CX("confirmerButtonTicks: 3 "
       "/*default fossil.confirmer tick count.*/,\n");
    /* Inject certain info about the current skin... */
    CX("skin:{");
    /* can leak a local filesystem path:
       CX("name: %!j,", skin_in_use());*/
    CX("isDark: %s"
       "/*true if the current skin has the 'white-foreground' detail*/",
       skin_detail_boolean("white-foreground") ? "true" : "false");
    CX("}\n"/*fossil.config.skin*/);
    CX("};\n"/* fossil.config */);
    CX("window.fossil.user = {");
    CX("name: %!j,", (g.zLogin&&*g.zLogin) ? g.zLogin : "guest");
    CX("isAdmin: %s", (g.perm.Admin || g.perm.Setup) ? "true" : "false");
    CX("};\n"/*fossil.user*/);
    CX("if(fossil.config.skin.isDark) "
       "document.body.classList.add('fossil-dark-style');\n");
    /*
    ** fossil.page holds info about the current page. This is also
    ** where the current page "should" store any of its own
    ** page-specific state, and it is reserved for that purpose.
    */
    CX("window.fossil.page = {"
       "name:\"%T\""
       "};\n", g.zPath);
    CX("})();\n");
    if(addScriptTag!=0){
      style_script_end();
    }
    /* The remaining window.fossil bootstrap code is not dependent on
    ** C-runtime state... */
    builtin_request_js("fossil.bootstrap.js");
  }
}

/*
** Given the NAME part of fossil.NAME.js, this function checks whether
** that module has been emitted by this function before.  If it has,
** it returns -1 with no side effects. If it has not, it queues up
** (via builtin_request_js()) an emit of the module via and all of its
** known (by this function) fossil.XYZ.js dependencies (in their
** dependency order) and returns 1. If it does not find the given
** module name it returns 0.
**
** As a special case, if passed 0 then it queues up all known modules
** and returns -1.
**
** The very first time this is called, it unconditionally calls
** builtin_emit_script_fossil_bootstrap().
**
** Any given module is only queued once, whether it is explicitly
** passed to the function or resolved as a dependency. Any attempts to
** re-queue them later are harmless no-ops.
*/
static int builtin_emit_fossil_js_once(const char * zName){
  static int once = 0;
  int i;
  static struct FossilJs {
    const char * zName; /* NAME part of fossil.NAME.js */
    int emitted;        /* True if already emitted. */
    const char * zDeps; /* \0-delimited list of other FossilJs
                        ** entries: all known deps of this one. Each
                        ** REQUIRES an EXPLICIT trailing \0, including
                        ** the final one! */
  } fjs[] = {
  /* This list ordering isn't strictly important. */
  {"confirmer",      0, 0},
  {"copybutton",     0, "dom\0"},
  {"diff",           0, "dom\0fetch\0storage\0"
   /* maintenance note: "diff" needs "storage" for storing the the
   ** sbs-sync-scroll toggle. */},
  {"dom",            0, 0},
  {"fetch",          0, 0},
  {"numbered-lines", 0, "popupwidget\0copybutton\0"},
  {"pikchr",         0, "dom\0"},
  {"popupwidget",    0, "dom\0"},
  {"storage",        0, 0},
  {"tabs",           0, "dom\0"}
  };
  const int nFjs = sizeof(fjs) / sizeof(fjs[0]);
  if(0==once){
    ++once;
    builtin_emit_script_fossil_bootstrap(1);
  }
  if(0==zName){
    for( i = 0; i < nFjs; ++i ){
      builtin_emit_fossil_js_once(fjs[i].zName);
    }
    return -1;
  }
  for( i = 0; i < nFjs; ++i ){
    if(0==strcmp(zName, fjs[i].zName)){
      if(fjs[i].emitted){
        return -1;
      }else{
        char nameBuffer[50];
        if(fjs[i].zDeps){
          const char * zDep = fjs[i].zDeps;
          while(*zDep!=0){
            builtin_emit_fossil_js_once(zDep);
            zDep += strlen(zDep)+1/*NUL delimiter*/;
          }
        }
        sqlite3_snprintf(sizeof(nameBuffer)-1, nameBuffer,
                         "fossil.%s.js", fjs[i].zName);
        builtin_request_js(nameBuffer);
        fjs[i].emitted = 1;
        return 1;
      }
    }
  }
  return 0;
}

/*
** COMMAND: test-js-once
**
** Tester for builtin_emit_fossil_js_once().
**
** Usage: %fossil test-js-once filename
*/
void test_js_once(void){
  int i;
  if(g.argc<2){
    usage("?FILENAME...?");
  }
  if(2==g.argc){
    builtin_emit_fossil_js_once(0);
    assert(builtin.nReq>8);
  }else{
    for(i = 2; i < g.argc; ++i){
      builtin_emit_fossil_js_once(g.argv[i]);
    }
    assert(builtin.nReq>1 && "don't forget implicit fossil.bootstrap.js");
  }
  for(i = 0; i < builtin.nReq; ++i){
    fossil_print("ndx#%d = %d = %s\n", i, builtin.aReq[i],
                 aBuiltinFiles[builtin.aReq[i]].zName);
  }
}

/*
** Convenience wrapper which calls builtin_request_js() for a series
** of builtin scripts named fossil.NAME.js. The first time it is
** called, it also calls builtin_emit_script_fossil_bootstrap() to
** initialize the window.fossil JS API. The first argument is the NAME
** part of the first API to emit. All subsequent arguments must be
** strings of the NAME part of additional fossil.NAME.js files,
** followed by a NULL argument to terminate the list.
**
** e.g. pass it ("fetch", "dom", "tabs", NULL) to load those 3 APIs (or
** pass it ("fetch","tabs",NULL), as "dom" is a dependency of "tabs", so
** it will be automatically loaded). Do not forget the trailing NULL,
** and do not pass 0 instead, since that isn't always equivalent to NULL
** in this context.
**
** If it is JS_BUNDLED then this routine queues up an emit of ALL of
** the JS fossil.XYZ.js APIs which are not strictly specific to a
** single page, and then calls builtin_fulfill_js_requests(). The idea
** is that we can get better bundle caching and reduced HTTP requests
** by including all JS, rather than creating separate bundles on a
** per-page basis. In this case, all arguments are ignored!
**
** This function has an internal mapping of the dependencies for each
** of the known fossil.XYZ.js modules and ensures that the
** dependencies also get queued (recursively) and that each module is
** queued only once.
**
** If passed a name which is not a base fossil module name then it
** will fail fatally!
**
** DO NOT use this for loading fossil.page.*.js: use
** builtin_request_js() for those.
**
** If the current JS delivery mode is *not* JS_BUNDLED then this
** function queues up a request for each given module and its known
** dependencies, but does not immediately fulfill the request, thus it
** can be called multiple times.
**
** If a given module is ever passed to this more than once, either in
** a single invocation or multiples, it is only queued for emit a
** single time (i.e. the 2nd and subsequent ones become
** no-ops). Likewise, if a module is requested but was already
** automatically queued to fulfill a dependency, the explicit request
** becomes a no-op.
**
** Bundled mode is the only mode in which this API greatly improves
** aggregate over-the-wire and HTTP request costs. For other modes,
** reducing the inclusion of fossil.XYZ APIs to their bare minimum
** provides the lowest aggregate costs. For debate and details, see
** the discussion at:
**
** https://fossil-scm.org/forum/forumpost/3fa2633f3e
**
** In practice it is normally necessary (or preferred) to call
** builtin_fulfill_js_requests() after calling this, before proceeding
** to call builtin_request_js() for page-specific JS, in order to
** improve cachability.
**
** Minor caveat: the purpose of emitting all of the fossil.XYZ JS APIs
** at once is to reduce over-the-wire transfers by enabling cross-page
** caching, but if there are other JS scripts pending via
** builtin_request_js() when this is called then they will be included
** in the JS request emitted by this routine, resulting in a different
** script URL than if they were not included. Thus, if a given page
** has its own scripts to install via builtin_request_js(), they
** should, if possible, be delayed until after this is called OR the
** page should call builtin_fulfill_js_requests() to flush the request
** queue before calling this routine.
**
** Achtung: the fossil.page.XYZ.js files are page-specific, containing
** the app-level logic for that specific page, and loading more than
** one of them in a single page will break that page. Each of those
** expects to "own" the page it is loaded in, and it should be loaded
** as late in the JS-loading process as feasible, ideally bundled (via
** builtin_request_js()) with any other app-/page-specific JS it may
** need.
**
** Example usage:
**
** builtin_fossil_js_bundle_or("dom", "fetch", NULL);
**
** In bundled mode, that will (the first time it is called) emit all
** builtin fossil JS APIs and "fulfill" the queue immediately. In
** non-bundled mode it will queue up the "dom" and "fetch" APIs to be
** emitted the next time builtin_fulfill_js_requests() is called.
*/
NULL_SENTINEL void builtin_fossil_js_bundle_or( const char * zApi, ... ) {
  static int bundled = 0;
  const char *zArg;
  va_list vargs;

  if(JS_BUNDLED == builtin_get_js_delivery_mode()){
    if(!bundled){
      bundled = 1;
      builtin_emit_fossil_js_once(0);
      builtin_fulfill_js_requests();
    }
    return;
  }
  va_start(vargs,zApi);
  for( zArg = zApi; zArg!=NULL; (zArg = va_arg (vargs, const char *))){
    if(0==builtin_emit_fossil_js_once(zArg)){
      fossil_fatal("Unknown fossil JS module: %s\n", zArg);
    }
  }
  va_end(vargs);
}
Added src/bundle.c.































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement and manage a "bundle" file.
*/
#include "config.h"
#include "bundle.h"
#include <assert.h>

/*
** SQL code used to initialize the schema of a bundle.
**
** The bblob.delta field can be an integer, a text string, or NULL.
** If an integer, then the corresponding blobid is the delta basis.
** If a text string, then that string is a SHA1 hash for the delta
** basis, which is presumably in the main repository.  If NULL, then
** data contains content without delta compression.
*/
static const char zBundleInit[] =
@ CREATE TABLE IF NOT EXISTS "%w".bconfig(
@   bcname TEXT,
@   bcvalue ANY
@ );
@ CREATE TABLE IF NOT EXISTS "%w".bblob(
@   blobid INTEGER PRIMARY KEY,      -- Blob ID
@   uuid TEXT NOT NULL,              -- hash of expanded blob
@   sz INT NOT NULL,                 -- Size of blob after expansion
@   delta ANY,                       -- Delta compression basis, or NULL
@   notes TEXT,                      -- Description of content
@   data BLOB                        -- compressed content
@ );
;

/*
** Attach a bundle file to the current database connection using the
** attachment name zBName.
*/
static void bundle_attach_file(
  const char *zFile,       /* Name of the file that contains the bundle */
  const char *zBName,      /* Attachment name */
  int doInit               /* Initialize a new bundle, if true */
){
  int rc;
  char *zErrMsg = 0;
  char *zSql;
  if( !doInit && file_size(zFile, ExtFILE)<0 ){
    fossil_fatal("no such file: %s", zFile);
  }
  assert( g.db );
  zSql = sqlite3_mprintf("ATTACH %Q AS %Q", zFile, zBName);
  if( zSql==0 ) fossil_fatal("out of memory");
  rc = sqlite3_exec(g.db, zSql, 0, 0, &zErrMsg);
  sqlite3_free(zSql);
  if( rc!=SQLITE_OK || zErrMsg ){
    if( zErrMsg==0 ) zErrMsg = (char*)sqlite3_errmsg(g.db);
    fossil_fatal("not a valid bundle: %s", zFile);
  }
  if( doInit ){
    db_multi_exec(zBundleInit /*works-like:"%w%w"*/, zBName, zBName);
  }else{
    sqlite3_stmt *pStmt;
    zSql = sqlite3_mprintf("SELECT bcname, bcvalue"
                           "  FROM \"%w\".bconfig", zBName);
    if( zSql==0 ) fossil_fatal("out of memory");
    rc = sqlite3_prepare(g.db, zSql, -1, &pStmt, 0);
    if( rc ) fossil_fatal("not a valid bundle: %s", zFile);
    sqlite3_free(zSql);
    sqlite3_finalize(pStmt);
    zSql = sqlite3_mprintf("SELECT blobid, uuid, sz, delta, notes, data"
                           "  FROM \"%w\".bblob", zBName);
    if( zSql==0 ) fossil_fatal("out of memory");
    rc = sqlite3_prepare(g.db, zSql, -1, &pStmt, 0);
    if( rc ) fossil_fatal("not a valid bundle: %s", zFile);
    sqlite3_free(zSql);
    sqlite3_finalize(pStmt);
  }
}

/*
**  fossil bundle ls BUNDLE ?OPTIONS?
**
** Display the content of a bundle in human-readable form.
*/
static void bundle_ls_cmd(void){
  Stmt q;
  sqlite3_int64 sumSz = 0;
  sqlite3_int64 sumLen = 0;
  int bDetails = find_option("details","l",0)!=0;
  verify_all_options();
  if( g.argc!=4 ) usage("ls BUNDLE ?OPTIONS?");
  bundle_attach_file(g.argv[3], "b1", 0);
  db_prepare(&q,
    "SELECT bcname, bcvalue FROM bconfig"
    " WHERE typeof(bcvalue)='text'"
    "   AND bcvalue NOT GLOB char(0x2a,0x0a,0x2a);"
  );
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("%s: %s\n", db_column_text(&q,0), db_column_text(&q,1));
  }
  db_finalize(&q);
  fossil_print("%.78c\n",'-');
  if( bDetails ){
    db_prepare(&q,
      "SELECT blobid, substr(uuid,1,10), coalesce(substr(delta,1,10),''),"
      "       sz, octet_length(data), notes"
      "  FROM bblob"
    );
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%4d %10s %10s %8d %8d %s\n",
        db_column_int(&q,0),
        db_column_text(&q,1),
        db_column_text(&q,2),
        db_column_int(&q,3),
        db_column_int(&q,4),
        db_column_text(&q,5));
      sumSz += db_column_int(&q,3);
      sumLen += db_column_int(&q,4);
    }
    db_finalize(&q);
    fossil_print("%27s %8lld %8lld\n", "Total:", sumSz, sumLen);
  }else{
    db_prepare(&q,
      "SELECT substr(uuid,1,16), notes FROM bblob"
    );
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%16s %s\n",
        db_column_text(&q,0),
        db_column_text(&q,1));
    }
    db_finalize(&q);
  }
}

/*
** Implement the "fossil bundle append BUNDLE FILE..." command.  Add
** the named files into the BUNDLE.  Create the BUNDLE if it does not
** already exist.
*/
static void bundle_append_cmd(void){
  Blob content, hash;
  int i;
  Stmt q;

  verify_all_options();
  bundle_attach_file(g.argv[3], "b1", 1);
  db_prepare(&q,
    "INSERT INTO bblob(blobid, uuid, sz, delta, data, notes) "
    "VALUES(NULL, $uuid, $sz, NULL, $data, $filename)");
  db_begin_transaction();
  for(i=4; i<g.argc; i++){
    int sz;
    blob_read_from_file(&content, g.argv[i], ExtFILE);
    sz = blob_size(&content);
    sha1sum_blob(&content, &hash);
    blob_compress(&content, &content);
    db_bind_text(&q, "$uuid", blob_str(&hash));
    db_bind_int(&q, "$sz", sz);
    db_bind_blob(&q, "$data", &content);
    db_bind_text(&q, "$filename", g.argv[i]);
    db_step(&q);
    db_reset(&q);
    blob_reset(&content);
    blob_reset(&hash);
  }
  db_end_transaction(0);
  db_finalize(&q);
}

/*
** Identify a subsection of the check-in tree using command-line switches.
** There must be one of the following switch available:
**
**     --branch BRANCHNAME          All check-ins on the most recent
**                                  instance of BRANCHNAME
**     --from TAG1 [--to TAG2]      Check-in TAG1 and all primary descendants
**                                  up to and including TAG2
**     --checkin TAG                Check-in TAG only
**
** Store the RIDs for all applicable check-ins in the zTab table that
** should already exist.  Invoke fossil_fatal() if any kind of error is
** seen.
*/
void subtree_from_arguments(const char *zTab){
  const char *zBr;
  const char *zFrom;
  const char *zTo;
  const char *zCkin;
  int rid = 0, endRid;

  zBr = find_option("branch",0,1);
  zFrom = find_option("from",0,1);
  zTo = find_option("to",0,1);
  zCkin = find_option("checkin",0,1);
  if( zCkin ){
    if( zFrom ) fossil_fatal("cannot use both --checkin and --from");
    if( zBr ) fossil_fatal("cannot use both --checkin and --branch");
    rid = symbolic_name_to_rid(zCkin, "ci");
    endRid = rid;
  }else{
    endRid = zTo ? name_to_typed_rid(zTo, "ci") : 0;
  }
  if( zFrom ){
    rid = name_to_typed_rid(zFrom, "ci");
  }else if( zBr ){
    rid = name_to_typed_rid(zBr, "br");
  }else if( zCkin==0 ){
    fossil_fatal("need one of: --branch, --from, --checkin");
  }
  db_multi_exec("INSERT OR IGNORE INTO \"%w\" VALUES(%d)", zTab, rid);
  if( rid!=endRid ){
    Blob sql;
    blob_zero(&sql);
    blob_appendf(&sql,
       "WITH RECURSIVE child(rid) AS (VALUES(%d) UNION ALL "
       "  SELECT cid FROM plink, child"
       "   WHERE plink.pid=child.rid"
       "     AND plink.isPrim", rid);
    if( endRid>0 ){
      double endTime = db_double(0.0, "SELECT mtime FROM event WHERE objid=%d",
                                 endRid);
      blob_appendf(&sql,
        "    AND child.rid!=%d"
        "    AND (SELECT mtime FROM event WHERE objid=plink.cid)<=%.17g",
        endRid, endTime
      );
    }
    if( zBr ){
      blob_appendf(&sql,
         "     AND EXISTS(SELECT 1 FROM tagxref"
                        "  WHERE tagid=%d AND tagtype>0"
                        "    AND value=%Q and rid=plink.cid)",
         TAG_BRANCH, zBr);
    }
    blob_appendf(&sql, ") INSERT OR IGNORE INTO \"%w\" SELECT rid FROM child;",
                 zTab);
    db_multi_exec("%s", blob_str(&sql)/*safe-for-%s*/);
  }
}

/*
** COMMAND: test-subtree
**
** Usage: %fossil test-subtree ?OPTIONS?
**
** Show the subset of check-ins that match the supplied options.  This
** command is used to test the subtree_from_options() subroutine in the
** implementation and does not really have any other practical use that
** we know of.
**
** Options:
**    --branch BRANCH           Include only check-ins on BRANCH
**    --from TAG                Start the subtree at TAG
**    --to TAG                  End the subtree at TAG
**    --checkin TAG             The subtree is the single check-in TAG
**    --all                     Include FILE and TAG artifacts
**    --exclusive               Include FILES exclusively on check-ins
*/
void test_subtree_cmd(void){
  int bAll = find_option("all",0,0)!=0;
  int bExcl = find_option("exclusive",0,0)!=0;
  db_find_and_open_repository(0,0);
  db_begin_transaction();
  db_multi_exec("CREATE TEMP TABLE tobundle(rid INTEGER PRIMARY KEY);");
  subtree_from_arguments("tobundle");
  verify_all_options();
  if( bAll ) find_checkin_associates("tobundle",bExcl);
  describe_artifacts_to_stdout("IN tobundle", 0);
  db_end_transaction(1);
}

/* fossil bundle export BUNDLE ?OPTIONS?
**
** OPTIONS:
**   --branch BRANCH --from TAG --to TAG
**   --checkin TAG
**   --standalone
*/
static void bundle_export_cmd(void){
  int bStandalone = find_option("standalone",0,0)!=0;
  int mnToBundle;   /* Minimum RID in the bundle */
  Stmt q;

  /* Decode the arguments (like --branch) that specify which artifacts
  ** should be in the bundle */
  db_multi_exec("CREATE TEMP TABLE tobundle(rid INTEGER PRIMARY KEY);");
  subtree_from_arguments("tobundle");
  find_checkin_associates("tobundle", 0);
  verify_all_options();
  describe_artifacts("IN tobundle");

  if( g.argc!=4 ) usage("export BUNDLE ?OPTIONS?");
  /* Create the new bundle */
  bundle_attach_file(g.argv[3], "b1", 1);
  db_begin_transaction();

  /* Add 'mtime' and 'project-code' entries to the bconfig table */
  db_multi_exec(
    "INSERT INTO bconfig(bcname,bcvalue)"
    " VALUES('mtime',datetime('now'));"
  );
  db_multi_exec(
    "INSERT INTO bconfig(bcname,bcvalue)"
    " SELECT name, value FROM config"
    "  WHERE name IN ('project-code','parent-project-code');"
  );

  /* Directly copy content from the repository into the bundle as long
  ** as the repository content is a delta from some other artifact that
  ** is also in the bundle.
  */
  db_multi_exec(
    "REPLACE INTO bblob(blobid,uuid,sz,delta,data,notes) "
    " SELECT"
    "   tobundle.rid,"
    "   blob.uuid,"
    "   blob.size,"
    "   delta.srcid,"
    "   blob.content,"
    "   (SELECT summary FROM description WHERE rid=blob.rid)"
    " FROM tobundle, blob, delta"
    " WHERE blob.rid=tobundle.rid"
    "   AND delta.rid=tobundle.rid"
    "   AND delta.srcid IN tobundle;"
  );

  /* For all the remaining artifacts, we need to construct their deltas
  ** manually.
  */
  mnToBundle = db_int(0,"SELECT min(rid) FROM tobundle");
  db_prepare(&q,
     "SELECT rid FROM tobundle"
     " WHERE rid NOT IN (SELECT blobid FROM bblob)"
     " ORDER BY +rid;"
  );
  while( db_step(&q)==SQLITE_ROW ){
    Blob content;
    int rid = db_column_int(&q,0);
    int deltaFrom = 0;

    /* Get the raw, uncompressed content of the artifact into content */
    content_get(rid, &content);

    /* Try to find another artifact, not within the bundle, that is a
    ** plausible candidate for being a delta basis for the content.  Set
    ** deltaFrom to the RID of that other artifact.  Leave deltaFrom set
    ** to zero if the content should not be delta-compressed
    */
    if( !bStandalone ){
      if( db_exists("SELECT 1 FROM plink WHERE cid=%d",rid) ){
        deltaFrom = db_int(0,
           "SELECT max(cid) FROM plink"
           " WHERE cid<%d", mnToBundle);
      }else{
        deltaFrom = db_int(0,
           "SELECT max(fid) FROM mlink"
           " WHERE fnid=(SELECT fnid FROM mlink WHERE fid=%d)"
           "   AND fid<%d", rid, mnToBundle);
      }
    }

    /* Try to insert the artifact as a delta
    */
    if( deltaFrom ){
      Blob basis, delta;
      content_get(deltaFrom, &basis);
      blob_delta_create(&basis, &content, &delta);
      if( blob_size(&delta)>0.9*blob_size(&content) ){
        deltaFrom = 0;
      }else{
        Stmt ins;
        blob_compress(&delta, &delta);
        db_prepare(&ins,
          "REPLACE INTO bblob(blobid,uuid,sz,delta,data,notes)"
          " SELECT %d, uuid, size, (SELECT uuid FROM blob WHERE rid=%d),"
          "  :delta, (SELECT summary FROM description WHERE rid=blob.rid)"
          "  FROM blob WHERE rid=%d", rid, deltaFrom, rid);
        db_bind_blob(&ins, ":delta", &delta);
        db_step(&ins);
        db_finalize(&ins);
      }
      blob_reset(&basis);
      blob_reset(&delta);
    }

    /* If unable to insert the artifact as a delta, insert full-text */
    if( deltaFrom==0 ){
      Stmt ins;
      blob_compress(&content, &content);
      db_prepare(&ins,
        "REPLACE INTO bblob(blobid,uuid,sz,delta,data,notes)"
        " SELECT rid, uuid, size, NULL, :content,"
        "        (SELECT summary FROM description WHERE rid=blob.rid)"
          " FROM blob WHERE rid=%d", rid);
      db_bind_blob(&ins, ":content", &content);
      db_step(&ins);
      db_finalize(&ins);
    }
    blob_reset(&content);
  }
  db_finalize(&q);

  db_end_transaction(0);
}


/*
** There is a TEMP table bix(blobid,delta) containing a set of purgeitems
** that need to be transferred to the BLOB table.  This routine does
** all items that have srcid=iSrc.  The pBasis blob holds the content
** of the source document if iSrc>0.
*/
static void bundle_import_elements(int iSrc, Blob *pBasis, int isPriv){
  Stmt q;
  static Bag busy;
  assert( pBasis!=0 || iSrc==0 );
  if( iSrc>0 ){
    if( bag_find(&busy, iSrc) ){
      fossil_fatal("delta loop while uncompressing bundle artifacts");
    }
    bag_insert(&busy, iSrc);
  }
  db_prepare(&q,
     "SELECT uuid, data, bblob.delta, bix.blobid"
     "  FROM bix, bblob"
     " WHERE bix.delta=%d"
     "   AND bix.blobid=bblob.blobid;",
     iSrc
  );
  while( db_step(&q)==SQLITE_ROW ){
    Blob h1, c1, c2;
    int rid;
    blob_zero(&h1);
    db_column_blob(&q, 0, &h1);
    blob_zero(&c1);
    db_column_blob(&q, 1, &c1);
    blob_uncompress(&c1, &c1);
    blob_zero(&c2);
    if( db_column_type(&q,2)==SQLITE_TEXT && db_column_bytes(&q,2)>=HNAME_MIN ){
      Blob basis;
      rid = db_int(0,"SELECT rid FROM blob WHERE uuid=%Q",
                   db_column_text(&q,2));
      content_get(rid, &basis);
      blob_delta_apply(&basis, &c1, &c2);
      blob_reset(&basis);
      blob_reset(&c1);
    }else if( pBasis ){
      blob_delta_apply(pBasis, &c1, &c2);
      blob_reset(&c1);
    }else{
      c2 = c1;
    }
    if( hname_verify_hash(&c2, blob_buffer(&h1), blob_size(&h1))==0 ){
      fossil_fatal("artifact hash error on %b", &h1);
    }
    rid = content_put_ex(&c2, blob_str(&h1), 0, 0, isPriv);
    if( rid==0 ){
      fossil_fatal("%s", g.zErrMsg);
    }else{
      if( !isPriv ) content_make_public(rid);
      content_get(rid, &c1);
      manifest_crosslink(rid, &c1, MC_NO_ERRORS);
      db_multi_exec("INSERT INTO got(rid) VALUES(%d)",rid);
    }
    bundle_import_elements(db_column_int(&q,3), &c2, isPriv);
    blob_reset(&c2);
  }
  db_finalize(&q);
  if( iSrc>0 ) bag_remove(&busy, iSrc);
}

/*
** Extract an item from content from the bundle
*/
static void bundle_extract_item(
  int blobid,          /* ID of the item to extract */
  Blob *pOut           /* Write the content into this blob */
){
  Stmt q;
  Blob x, basis, h1;
  static Bag busy;

  db_prepare(&q, "SELECT uuid, delta, data FROM bblob"
                 " WHERE blobid=%d", blobid);
  if( db_step(&q)!=SQLITE_ROW ){
    db_finalize(&q);
    fossil_fatal("no such item: %d", blobid);
  }
  if( bag_find(&busy, blobid) ) fossil_fatal("delta loop");
  blob_zero(&x);
  db_column_blob(&q, 2, &x);
  blob_uncompress(&x, &x);
  if( db_column_type(&q,1)==SQLITE_INTEGER ){
    bundle_extract_item(db_column_int(&q,1), &basis);
    blob_delta_apply(&basis, &x, pOut);
    blob_reset(&basis);
    blob_reset(&x);
  }else if( db_column_type(&q,1)==SQLITE_TEXT ){
    int rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q",
                     db_column_text(&q,1));
    if( rid==0 ){
      fossil_fatal("cannot find delta basis %s", db_column_text(&q,1));
    }
    content_get(rid, &basis);
    db_column_blob(&q, 2, &x);
    blob_delta_apply(&basis, &x, pOut);
    blob_reset(&basis);
    blob_reset(&x);
  }else{
    *pOut = x;
  }
  blob_zero(&h1);
  db_column_blob(&q, 0, &h1);
  if( hname_verify_hash(pOut, blob_buffer(&h1), blob_size(&h1))==0 ){
    fossil_fatal("incorrect hash for artifact %b", &h1);
  }
  blob_reset(&h1);
  bag_remove(&busy, blobid);
  db_finalize(&q);
}

/* fossil bundle cat BUNDLE HASH...
**
** Write elements of a bundle on standard output
*/
static void bundle_cat_cmd(void){
  int i;
  Blob x;
  verify_all_options();
  if( g.argc<5 ) usage("cat BUNDLE HASH...");
  bundle_attach_file(g.argv[3], "b1", 0);
  blob_zero(&x);
  for(i=4; i<g.argc; i++){
    int blobid = db_int(0,"SELECT blobid FROM bblob WHERE uuid LIKE '%q%%'",
                        g.argv[i]);
    if( blobid==0 ){
      fossil_fatal("no such artifact in bundle: %s", g.argv[i]);
    }
    bundle_extract_item(blobid, &x);
    blob_write_to_file(&x, "-");
    blob_reset(&x);
  }
}


/* fossil bundle import BUNDLE ?OPTIONS?
**
** Attempt to import the changes contained in BUNDLE.  Make the change
** private so that they do not sync.
**
** OPTIONS:
**    --force           Import even if the project-code does not match
**    --publish         Imported changes are not private
*/
static void bundle_import_cmd(void){
  int forceFlag = find_option("force","f",0)!=0;
  int isPriv = find_option("publish",0,0)==0;
  char *zMissingDeltas;
  verify_all_options();
  if ( g.argc!=4 ) usage("import BUNDLE ?OPTIONS?");
  bundle_attach_file(g.argv[3], "b1", 0);

  /* Only import a bundle that was generated from a repo with the same
  ** project code, unless the --force flag is true */
  if( !forceFlag ){
    if( !db_exists("SELECT 1 FROM config, bconfig"
                  " WHERE config.name='project-code'"
                  "   AND bconfig.bcname='project-code'"
                  "   AND config.value=bconfig.bcvalue;")
    ){
      fossil_fatal("project-code in the bundle does not match the "
                   "repository project code.  (override with --force).");
    }
  }

  /* If the bundle contains deltas with a basis that is external to the
  ** bundle and those external basis files are missing from the local
  ** repo, then the delta encodings cannot be decoded and the bundle cannot
  ** be extracted. */
  zMissingDeltas = db_text(0,
      "SELECT group_concat(substr(delta,1,10),' ')"
      "  FROM bblob"
      " WHERE typeof(delta)='text' AND octet_length(delta)>=%d"
      "   AND NOT EXISTS(SELECT 1 FROM blob WHERE uuid=bblob.delta)",
      HNAME_MIN);
  if( zMissingDeltas && zMissingDeltas[0] ){
    fossil_fatal("delta basis artifacts not found in repository: %s",
                 zMissingDeltas);
  }

  db_begin_transaction();
  db_multi_exec(
    "CREATE TEMP TABLE bix("
    "  blobid INTEGER PRIMARY KEY,"
    "  delta INTEGER"
    ");"
    "CREATE INDEX bixdelta ON bix(delta);"
    "INSERT INTO bix(blobid,delta)"
    "  SELECT blobid,"
    "         CASE WHEN typeof(delta)=='integer'"
    "              THEN delta ELSE 0 END"
    "    FROM bblob"
    "   WHERE NOT EXISTS(SELECT 1 FROM blob WHERE uuid=bblob.uuid AND size>=0);"
    "CREATE TEMP TABLE got(rid INTEGER PRIMARY KEY ON CONFLICT IGNORE);"
  );
  manifest_crosslink_begin();
  bundle_import_elements(0, 0, isPriv);
  manifest_crosslink_end(0);
  describe_artifacts_to_stdout("IN got", "Imported content:");
  db_end_transaction(0);
}

/* fossil bundle purge BUNDLE
**
** Try to undo a prior "bundle import BUNDLE".
**
** If the --force option is omitted, then this will only work if
** there have been no check-ins or tags added that use the import.
**
** This routine never removes content that is not already in the bundle
** so the bundle serves as a backup.  The purge can be undone using
** "fossil bundle import BUNDLE".
*/
static void bundle_purge_cmd(void){
  int bForce = find_option("force",0,0)!=0;
  int bTest = find_option("test",0,0)!=0;  /* Undocumented --test option */
  const char *zFile = g.argv[3];
  verify_all_options();
  if ( g.argc!=4 ) usage("purge BUNDLE ?OPTIONS?");
  bundle_attach_file(zFile, "b1", 0);
  db_begin_transaction();

  /* Find all check-ins of the bundle */
  db_multi_exec(
    "CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY);"
    "INSERT OR IGNORE INTO ok SELECT blob.rid FROM bblob, blob, plink"
    " WHERE bblob.uuid=blob.uuid"
    "   AND plink.cid=blob.rid;"
  );

  /* Check to see if new check-ins have been committed to check-ins in
  ** the bundle.  Do not allow the purge if that is true and if --force
  ** is omitted.
  */
  if( !bForce ){
    Stmt q;
    int n = 0;
    db_prepare(&q,
      "SELECT cid FROM plink WHERE pid IN ok AND cid NOT IN ok"
    );
    while( db_step(&q)==SQLITE_ROW ){
      whatis_rid(db_column_int(&q,0),0);
      fossil_print("%.78c\n", '-');
      n++;
    }
    db_finalize(&q);
    if( n>0 ){
      fossil_fatal("check-ins above are derived from check-ins in the bundle.");
    }
  }

  /* Find all files associated with those check-ins that are used
  ** nowhere else. */
  find_checkin_associates("ok", 1);

  /* Check to see if any associated files are not in the bundle.  Issue
  ** an error if there are any, unless --force is used.
  */
  if( !bForce ){
    db_multi_exec(
       "CREATE TEMP TABLE err1(rid INTEGER PRIMARY KEY);"
       "INSERT INTO err1 "
       " SELECT blob.rid FROM ok CROSS JOIN blob"
       "     WHERE blob.rid=ok.rid"
       "       AND blob.uuid NOT IN (SELECT uuid FROM bblob);"
    );
    if( db_changes() ){
      describe_artifacts_to_stdout("IN err1", 0);
      fossil_fatal("artifacts above associated with bundle check-ins "
                   " are not in the bundle");
    }else{
      db_multi_exec("DROP TABLE err1;");
    }
  }

  if( bTest ){
    describe_artifacts_to_stdout(
      "IN (SELECT blob.rid FROM ok, blob, bblob"
      "     WHERE blob.rid=ok.rid AND blob.uuid=bblob.uuid)",
      "Purged artifacts found in the bundle:");
    describe_artifacts_to_stdout(
      "IN (SELECT blob.rid FROM ok, blob"
      "     WHERE blob.rid=ok.rid "
      "       AND blob.uuid NOT IN (SELECT uuid FROM bblob))",
      "Purged artifacts NOT in the bundle:");
    describe_artifacts_to_stdout(
      "IN (SELECT blob.rid FROM bblob, blob"
      "     WHERE blob.uuid=bblob.uuid "
      "       AND blob.rid NOT IN ok)",
      "Artifacts in the bundle but not purged:");
  }else{
    purge_artifact_list("ok",0,0);
  }
  db_end_transaction(0);
}

/*
** COMMAND: bundle*
**
** Usage: %fossil bundle SUBCOMMAND ARGS...
**
** > fossil bundle append BUNDLE FILE...
**
**      Add files named on the command line to BUNDLE.  This subcommand has
**      little practical use and is mostly intended for testing.
**
** > fossil bundle cat BUNDLE HASH...
**
**      Extract one or more artifacts from the bundle and write them
**      consecutively on standard output.  This subcommand was designed
**      for testing and introspection of bundles and is not something
**      commonly used.
**
** > fossil bundle export BUNDLE ?OPTIONS?
**
**      Generate a new bundle, in the file named BUNDLE, that contains a
**      subset of the check-ins in the repository (usually a single branch)
**      described by the --branch, --from, --to, and/or --checkin options,
**      at least one of which is required.  If BUNDLE already exists, the
**      specified content is added to the bundle.
**
**         --branch BRANCH            Package all check-ins on BRANCH
**         --from TAG1 --to TAG2      Package check-ins between TAG1 and TAG2
**         --checkin TAG              Package the single check-in TAG
**         --standalone               Do no use delta-encoding against
**                                    artifacts not in the bundle
**
** > fossil bundle extend BUNDLE
**
**      The BUNDLE must already exist.  This subcommand adds to the bundle
**      any check-ins that are descendants of check-ins already in the bundle,
**      and any tags that apply to artifacts in the bundle.
**
** > fossil bundle import BUNDLE ?--publish?
**
**      Import all content from BUNDLE into the repository.  By default, the
**      imported files are private and will not sync.  Use the --publish
**      option to make the import public.
**
** > fossil bundle ls BUNDLE
**
**      List the contents of BUNDLE on standard output
**
** > fossil bundle purge BUNDLE
**
**      Remove from the repository all files that are used exclusively
**      by check-ins in BUNDLE.  This has the effect of undoing a
**      "fossil bundle import".
**
** See also: [[publish]]
*/
void bundle_cmd(void){
  const char *zSubcmd;
  int n;
  if( g.argc<4 ) usage("SUBCOMMAND BUNDLE ?OPTIONS?");
  zSubcmd = g.argv[2];
  db_find_and_open_repository(0,0);
  n = (int)strlen(zSubcmd);
  if( strncmp(zSubcmd, "append", n)==0 ){
    bundle_append_cmd();
  }else if( strncmp(zSubcmd, "cat", n)==0 ){
    bundle_cat_cmd();
  }else if( strncmp(zSubcmd, "export", n)==0 ){
    bundle_export_cmd();
  }else if( strncmp(zSubcmd, "extend", n)==0 ){
    fossil_fatal("not yet implemented");
  }else if( strncmp(zSubcmd, "import", n)==0 ){
    bundle_import_cmd();
  }else if( strncmp(zSubcmd, "ls", n)==0 ){
    bundle_ls_cmd();
  }else if( strncmp(zSubcmd, "purge", n)==0 ){
    bundle_purge_cmd();
  }else{
    fossil_fatal("unknown subcommand for bundle: %s", zSubcmd);
  }
}
Added src/cache.c.





































































































































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file implements a cache for expense operations such as
** /zip and /tarball.
*/
#include "config.h"
#include <sqlite3.h>
#include "cache.h"

/*
** Construct the name of the repository cache file
*/
static char *cacheName(void){
  int i;
  int n;

  if( g.zRepositoryName==0 ) return 0;
  n = (int)strlen(g.zRepositoryName);
  for(i=n-1; i>=0; i--){
    if( g.zRepositoryName[i]=='/' ){ i = n; break; }
    if( g.zRepositoryName[i]=='.' ) break;
  }
  if( i<0 ) i = n;
  return mprintf("%.*s.cache", i, g.zRepositoryName);
}

/*
** Attempt to open the cache database, if such a database exists.
** Make sure the cache table exists within that database.
*/
static sqlite3 *cacheOpen(int bForce){
  char *zDbName;
  sqlite3 *db = 0;
  int rc;
  i64 sz;

  zDbName = cacheName();
  if( zDbName==0 ) return 0;
  if( bForce==0 ){
    sz = file_size(zDbName, ExtFILE);
    if( sz<=0 ){
      fossil_free(zDbName);
      return 0;
    }
  }
  rc = sqlite3_open(zDbName, &db);
  fossil_free(zDbName);
  if( rc ){
    sqlite3_close(db);
    return 0;
  }
  sqlite3_busy_timeout(db, 5000);
  if( sqlite3_table_column_metadata(db,0,"blob","key",0,0,0,0,0)!=SQLITE_OK ){
    rc = sqlite3_exec(db,
       "PRAGMA page_size=8192;"
       "CREATE TABLE IF NOT EXISTS blob(id INTEGER PRIMARY KEY, data BLOB);"
       "CREATE TABLE IF NOT EXISTS cache("
         "key TEXT PRIMARY KEY,"     /* Key used to access the cache */
         "id INT REFERENCES blob,"   /* The cache content */
         "sz INT,"                   /* Size of content in bytes */
         "tm INT,"                   /* Last access time (unix timestampe) */
         "nref INT"                  /* Number of uses */
       ");"
       "CREATE TRIGGER IF NOT EXISTS cacheDel AFTER DELETE ON cache BEGIN"
       "  DELETE FROM blob WHERE id=OLD.id;"
       "END;",
       0, 0, 0
    );
    if( rc!=SQLITE_OK ){
      sqlite3_close(db);
      return 0;
    }
  }
  return db;
}

/*
** Attempt to construct a prepared statement for the cache database.
*/
static sqlite3_stmt *cacheStmt(sqlite3 *db, const char *zSql){
  sqlite3_stmt *pStmt = 0;
  int rc;

  rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0);
  if( rc ){
    sqlite3_finalize(pStmt);
    pStmt = 0;
  }
  return pStmt;
}

/*
** This routine implements an SQL function that renders a large integer
** compactly:  ex: 12.3MB
*/
static void cache_sizename(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  char zBuf[30];
  double v, x;
  assert( argc==1 );
  v = sqlite3_value_double(argv[0]);
  x = v<0.0 ? -v : v;
  if( x>=1e9 ){
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%.1fGB", v/1e9);
  }else if( x>=1e6 ){
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%.1fMB", v/1e6);
  }else if( x>=1e3 ){
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%.1fKB", v/1e3);
  }else{
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%gB", v);
  }
  sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT);
}

/*
** Register the sizename() SQL function with the SQLite database
** connection.
*/
static void cache_register_sizename(sqlite3 *db){
  sqlite3_create_function(db, "sizename", 1, SQLITE_UTF8, 0,
                          cache_sizename, 0, 0);
}

/*
** Attempt to write pContent into the cache.  If the cache file does
** not exist, then this routine is a no-op.  Older cache entries might
** be deleted.
*/
void cache_write(Blob *pContent, const char *zKey){
  sqlite3 *db;
  sqlite3_stmt *pStmt;
  int rc = 0;
  int nKeep;

  db = cacheOpen(0);
  if( db==0 ) return;
  sqlite3_busy_timeout(db, 10000);
  sqlite3_exec(db, "BEGIN IMMEDIATE", 0, 0, 0);
  pStmt = cacheStmt(db, "INSERT INTO blob(data) VALUES(?1)");
  if( pStmt==0 ) goto cache_write_end;
  sqlite3_bind_blob(pStmt, 1, blob_buffer(pContent), blob_size(pContent),
                    SQLITE_STATIC);
  if( sqlite3_step(pStmt)!=SQLITE_DONE ) goto cache_write_end;
  sqlite3_finalize(pStmt);
  pStmt = cacheStmt(db,
      "INSERT OR IGNORE INTO cache(key,sz,tm,nref,id)"
      "VALUES(?1,?2,strftime('%s','now'),1,?3)"
  );
  if( pStmt==0 ) goto cache_write_end;
  sqlite3_bind_text(pStmt, 1, zKey, -1, SQLITE_STATIC);
  sqlite3_bind_int(pStmt, 2, blob_size(pContent));
  sqlite3_bind_int(pStmt, 3, sqlite3_last_insert_rowid(db));
  if( sqlite3_step(pStmt)!=SQLITE_DONE) goto cache_write_end;
  rc = sqlite3_changes(db);

  /* If the write was successful, truncate the cache to keep at most
  ** max-cache-entry entries in the cache.
  **
  ** The cache entry replacement algorithm is approximately LRU
  ** (least recently used).  However, each access of an entry buys
  ** that entry an extra hour of grace, so that more commonly accessed
  ** entries are held in cache longer.  The extra "grace" allotted to
  ** an entry is limited to 2 days worth.
  */
  if( rc ){
    nKeep = db_get_int("max-cache-entry",10);
    sqlite3_finalize(pStmt);
    pStmt = cacheStmt(db,
                 "DELETE FROM cache WHERE rowid IN ("
                    "SELECT rowid FROM cache"
                    " ORDER BY (tm + 3600*min(nRef,48)) DESC"
                    " LIMIT -1 OFFSET ?1)");
    if( pStmt ){
      sqlite3_bind_int(pStmt, 1, nKeep);
      sqlite3_step(pStmt);
    }
  }

cache_write_end:
  sqlite3_finalize(pStmt);
  sqlite3_exec(db, rc ? "COMMIT" : "ROLLBACK", 0, 0, 0);
  sqlite3_close(db);
}

/*
** SETTING: max-cache-entry                 width=10 default=10
**
** This is the maximum number of entries to allow in the web-cache
** for tarballs, ZIP-archives, and SQL-archives.
*/

/*
** Attempt to read content out of the cache with the given zKey.  Return
** non-zero on success and zero if unable to locate the content.
**
** Possible reasons for returning zero:
**   (1)  This server does not implement a cache
**   (2)  The requested element is not in the cache
*/
int cache_read(Blob *pContent, const char *zKey){
  sqlite3 *db;
  sqlite3_stmt *pStmt;
  int rc = 0;

  db = cacheOpen(0);
  if( db==0 ) return 0;
  sqlite3_busy_timeout(db, 10000);
  sqlite3_exec(db, "BEGIN IMMEDIATE", 0, 0, 0);
  pStmt = cacheStmt(db,
    "SELECT blob.data FROM cache, blob"
    " WHERE cache.key=?1 AND cache.id=blob.id");
  if( pStmt==0 ) goto cache_read_done;
  sqlite3_bind_text(pStmt, 1, zKey, -1, SQLITE_STATIC);
  if( sqlite3_step(pStmt)==SQLITE_ROW ){
    blob_append(pContent, sqlite3_column_blob(pStmt, 0),
                          sqlite3_column_bytes(pStmt, 0));
    rc = 1;
    sqlite3_reset(pStmt);
    pStmt = cacheStmt(db,
              "UPDATE cache SET nref=nref+1, tm=strftime('%s','now')"
              " WHERE key=?1");
    if( pStmt ){
      sqlite3_bind_text(pStmt, 1, zKey, -1, SQLITE_STATIC);
      sqlite3_step(pStmt);
    }
  }
  sqlite3_finalize(pStmt);
cache_read_done:
  sqlite3_exec(db, "COMMIT", 0, 0, 0);
  sqlite3_close(db);
  return rc;
}

/*
** Create a cache database for the current repository if no such
** database already exists.
*/
void cache_initialize(void){
  sqlite3_close(cacheOpen(1));
}

/*
** COMMAND: cache*
**
** Usage: %fossil cache SUBCOMMAND
**
** Manage the cache used for potentially expensive web pages such as
** /zip and /tarball.   SUBCOMMAND can be:
**
**    clear        Remove all entries from the cache.
**
**    init         Create the cache file if it does not already exist.
**
**    list|ls      List the keys and content sizes and other stats for
**                 all entries currently in the cache.
**
**    size ?N?     Query or set the maximum number of entries in the cache.
**
**    status       Show a summary of the cache status.
**
** The cache is stored in a file that is distinct from the repository
** but that is held in the same directory as the repository.  The cache
** file can be deleted in order to completely disable the cache.
*/
void cache_cmd(void){
  const char *zCmd;
  int nCmd;
  sqlite3 *db;
  sqlite3_stmt *pStmt;

  db_find_and_open_repository(0,0);
  zCmd = g.argc>=3 ? g.argv[2] : "";
  nCmd = (int)strlen(zCmd);
  if( nCmd<=1 ){
    fossil_fatal("Usage: %s cache SUBCOMMAND", g.argv[0]);
  }
  if( strncmp(zCmd, "init", nCmd)==0 ){
    db = cacheOpen(0);
    sqlite3_close(db);
    if( db ){
      fossil_print("cache already exists in file %z\n", cacheName());
    }else{
      db = cacheOpen(1);
      sqlite3_close(db);
      if( db ){
        fossil_print("cache created in file %z\n", cacheName());
      }else{
        fossil_fatal("unable to create cache file %z", cacheName());
      }
    }
  }else if( strncmp(zCmd, "clear", nCmd)==0 ){
    db = cacheOpen(0);
    if( db ){
      sqlite3_exec(db, "DELETE FROM cache; DELETE FROM blob; VACUUM;",0,0,0);
      sqlite3_close(db);
      fossil_print("cache cleared\n");
    }else{
      fossil_print("nothing to clear; cache does not exist\n");
    }
  }else if( strncmp(zCmd, "list", nCmd)==0
        ||  strncmp(zCmd, "ls", nCmd)==0
        ||  strncmp(zCmd, "status", nCmd)==0
  ){
    db = cacheOpen(0);
    if( db==0 ){
      fossil_print("cache does not exist\n");
    }else{
      int nEntry = 0;
      char *zDbName = cacheName();
      cache_register_sizename(db);
      pStmt = cacheStmt(db,
           "SELECT key, sizename(sz), nRef, datetime(tm,'unixepoch')"
           "  FROM cache"
           " ORDER BY tm DESC"
      );
      if( pStmt ){
        while( sqlite3_step(pStmt)==SQLITE_ROW ){
          if( zCmd[0]=='l' ){
            fossil_print("%s %4d %8s %s\n",
               sqlite3_column_text(pStmt, 3),
               sqlite3_column_int(pStmt, 2),
               sqlite3_column_text(pStmt, 1),
               sqlite3_column_text(pStmt, 0));
          }
          nEntry++;
        }
        sqlite3_finalize(pStmt);
      }
      sqlite3_close(db);
      fossil_print(
         "Filename:        %s\n"
         "Entries:         %d\n"
         "max-cache-entry: %d\n"
         "Cache-file Size: %,lld\n",
         zDbName,
         nEntry,
         db_get_int("max-cache-entry",10),
         file_size(zDbName, ExtFILE)
      );
      fossil_free(zDbName);
    }
  }else if( strncmp(zCmd, "size", nCmd)==0 ){
    if( g.argc>=4 ){
      int n = atoi(g.argv[3]);
      if( n>=5 ) db_set_int("max-cache-entry",n,0);
    }
    fossil_print("max-cache-entry: %d\n", db_get_int("max-cache-entry",10));
  }else{
    fossil_fatal("Unknown subcommand \"%s\"."
                 " Should be one of: clear init list size status", zCmd);
  }
}

/*
** Given a cache key, find the check-in hash and return it as a separate
** string.  The returned string is obtained from fossil_malloc() and must
** be freed by the caller.
**
** Return NULL if not found.
**
** The key is usually in a format like these:
**
**    /tarball/HASH/NAME
**    /zip/HASH/NAME
**    /sqlar/HASH/NAME
*/
static char *cache_hash_of_key(const char *zKey){
  int i;
  if( zKey==0 ) return 0;
  if( zKey[0]!='/' ) return 0;
  zKey++;
  while( zKey[0] && zKey[0]!='/' ) zKey++;
  if( zKey[0]==0 ) return 0;
  zKey++;
  for(i=0; zKey[i] && zKey[i]!='/'; i++){}
  if( !validate16(zKey, i) ) return 0;
  return fossil_strndup(zKey, i);
}


/*
** WEBPAGE: cachestat
**
** Show information about the webpage cache.  Requires Setup privilege.
*/
void cache_page(void){
  sqlite3 *db;
  sqlite3_stmt *pStmt;
  char zBuf[100];

  login_check_credentials();
  if( !g.perm.Setup ){ login_needed(0); return; }
  style_set_current_feature("cache");
  style_header("Web Cache Status");
  db = cacheOpen(0);
  if( db==0 ){
    @ The web-page cache is disabled for this repository
  }else{
    char *zDbName = cacheName();
    cache_register_sizename(db);
    pStmt = cacheStmt(db,
         "SELECT key, sz, nRef, datetime(tm,'unixepoch')"
         "  FROM cache"
         " ORDER BY (tm + 3600*min(nRef,48)) DESC"
    );
    if( pStmt ){
      @ <ol>
      while( sqlite3_step(pStmt)==SQLITE_ROW ){
        const unsigned char *zName = sqlite3_column_text(pStmt,0);
        char *zHash = cache_hash_of_key((const char*)zName);
        @ <li><p>%z(href("%R/cacheget?key=%T",zName))%h(zName)</a><br>
        @ size: %,lld(sqlite3_column_int64(pStmt,1))
        @ hit-count: %d(sqlite3_column_int(pStmt,2))
        @ last-access: %s(sqlite3_column_text(pStmt,3)) \
        if( zHash ){
          @ %z(href("%R/timeline?c=%S",zHash))check-in</a>\
          fossil_free(zHash);
        }
        @ </p></li>

      }
      sqlite3_finalize(pStmt);
      @ </ol>
    }
    zDbName = cacheName();
    bigSizeName(sizeof(zBuf), zBuf, file_size(zDbName, ExtFILE));
    @ <p>
    @ cache-file name: %h(zDbName)<br>
    @ cache-file size: %s(zBuf)<br>
    @ max-cache-entry: %d(db_get_int("max-cache-entry",10))
    @ </p>
    @ <p>
    @ Use the "<a href="%R/help?cmd=cache">fossil cache</a>" command
    @ on the command-line to create and configure the web-cache.
    @ </p>
    fossil_free(zDbName);
    sqlite3_close(db);
  }
  style_finish_page();
}

/*
** WEBPAGE: cacheget
**
** Usage:  /cacheget?key=KEY
**
** Download a single entry for the cache, identified by KEY.
** This page is normally a hyperlink from the /cachestat page.
** Requires Admin privilege.
*/
void cache_getpage(void){
  const char *zKey;
  Blob content;

  login_check_credentials();
  if( !g.perm.Setup ){ login_needed(0); return; }
  zKey = PD("key","");
  blob_zero(&content);
  if( cache_read(&content, zKey)==0 ){
    style_set_current_feature("cache");
    style_header("Cache Download Error");
    @ The cache does not contain any entry with this key: "%h(zKey)"
    style_finish_page();
    return;
  }
  cgi_set_content(&content);
  cgi_set_content_type("application/x-compressed");
}
Added src/capabilities.c.































































































































































































































































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used managing user capability strings.
*/
#include "config.h"
#include "capabilities.h"
#include <assert.h>

#if INTERFACE
/*
** A capability string object holds all defined capabilities in a
** vector format that is subject to boolean operations.
*/
struct CapabilityString {
  unsigned char x[128];
};
#endif

/*
** Add capabilities to a CapabilityString.  If pIn is NULL, then create
** a new capability string.
**
** Call capability_free() on the allocated CapabilityString object to
** deallocate.
*/
CapabilityString *capability_add(CapabilityString *pIn, const char *zCap){
  int c;
  int i;
  if( pIn==0 ){
    pIn = fossil_malloc( sizeof(*pIn) );
    memset(pIn, 0, sizeof(*pIn));
  }
  if( zCap ){
    for(i=0; (c = zCap[i])!=0; i++){
      if( c>='0' && c<='z' ) pIn->x[c] = 1;
    }
  }
  return pIn;
}

/*
** Remove capabilities from a CapabilityString.
*/
CapabilityString *capability_remove(CapabilityString *pIn, const char *zCap){
  int c;
  int i;
  if( pIn==0 ){
    pIn = fossil_malloc( sizeof(*pIn) );
    memset(pIn, 0, sizeof(*pIn));
  }
  if( zCap ){
    for(i=0; (c = zCap[i])!=0; i++){
      if( c>='0' && c<='z' ) pIn->x[c] = 0;
    }
  }
  return pIn;
}

/*
** Return true if any of the capabilities in zNeeded are found in pCap
*/
int capability_has_any(CapabilityString *p, const char *zNeeded){
  if( p==0 ) return 0;
  if( zNeeded==0 ) return 0;
  while( zNeeded[0] ){
    int c = zNeeded[0];
    if( fossil_isalnum(c) && p->x[c] ) return 1;
    zNeeded++;
  }
  return 0;
}

/*
** Delete a CapabilityString object.
*/
void capability_free(CapabilityString *p){
  fossil_free(p);
}

/*
** Expand the capability string by including all capabilities for
** special users "nobody" and "anonymous".  Also include "reader"
** if "u" is present and "developer" if "v" is present.
*/
void capability_expand(CapabilityString *pIn){
  static char *zNobody = 0;
  static char *zAnon = 0;
  static char *zReader = 0;
  static char *zDev = 0;
  static char *zAdmin = "bcdefghijklmnopqrtwz234567AD";
  int doneV = 0;

  if( pIn==0 ){
    fossil_free(zNobody); zNobody = 0;
    fossil_free(zAnon);   zAnon = 0;
    fossil_free(zReader); zReader = 0;
    fossil_free(zDev);    zDev = 0;
    return;
  }
  if( zNobody==0 ){
    zNobody = db_text(0, "SELECT cap FROM user WHERE login='nobody'");
    zAnon = db_text(0, "SELECT cap FROM user WHERE login='anonymous'");
    zReader = db_text(0, "SELECT cap FROM user WHERE login='reader'");
    zDev = db_text(0, "SELECT cap FROM user WHERE login='developer'");
  }
  pIn = capability_add(pIn, zAnon);
  pIn = capability_add(pIn, zNobody);
  if( pIn->x['a'] || pIn->x['s'] ){
    pIn = capability_add(pIn, zAdmin);
  }
  if( pIn->x['v'] ){
    pIn = capability_add(pIn, zDev);
    doneV = 1;
  }
  if( pIn->x['u'] ){
    pIn = capability_add(pIn, zReader);
    if( pIn->x['v'] && !doneV ){
      pIn = capability_add(pIn, zDev);
    }
  }
}

/*
** Render a capability string in canonical string format.  Space to hold
** the returned string is obtained from fossil_malloc() can should be freed
** by the caller.
*/
char *capability_string(CapabilityString *p){
  Blob out;
  int i;
  int j = 0;
  char buf[100];
  blob_init(&out, 0, 0);
  for(i='a'; i<='z'; i++){
    if( p->x[i] ) buf[j++] = i;
  }
  for(i='0'; i<='9'; i++){
    if( p->x[i] ) buf[j++] = i;
  }
  for(i='A'; i<='Z'; i++){
    if( p->x[i] ) buf[j++] = i;
  }
  buf[j] = 0;
  return fossil_strdup(buf);
}

/*
** The next two routines implement an aggregate SQL function that
** takes multiple capability strings and in the end returns their
** union.  Example usage:
**
**    SELECT capunion(cap) FROM user WHERE login IN ('nobody','anonymous');
*/
void capability_union_step(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  CapabilityString *p;
  const char *zIn;

  zIn = (const char*)sqlite3_value_text(argv[0]);
  if( zIn==0 ) return;
  p = (CapabilityString*)sqlite3_aggregate_context(context, sizeof(*p));
  p = capability_add(p, zIn);
}
void capability_union_finalize(sqlite3_context *context){
  CapabilityString *p;
  p = sqlite3_aggregate_context(context, 0);
  if( p ){
    char *zOut = capability_string(p);
    sqlite3_result_text(context, zOut, -1, fossil_free);
  }
}

/*
** The next routines takes the raw USER.CAP field and expands it with
** capabilities from special users.  Example:
**
**   SELECT fullcap(cap) FROM user WHERE login=?1
*/
void capability_fullcap(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  CapabilityString *p;
  const char *zIn;
  char *zOut;

  zIn = (const char*)sqlite3_value_text(argv[0]);
  if( zIn==0 ) zIn = "";
  p = capability_add(0, zIn);
  capability_expand(p);
  zOut = capability_string(p);
  sqlite3_result_text(context, zOut, -1, fossil_free);
  capability_free(p);
}

#if INTERFACE
/*
** Capabilities are grouped into "classes" as follows:
*/
#define CAPCLASS_CODE  0x0001
#define CAPCLASS_WIKI  0x0002
#define CAPCLASS_TKT   0x0004
#define CAPCLASS_FORUM 0x0008
#define CAPCLASS_DATA  0x0010
#define CAPCLASS_ALERT 0x0020
#define CAPCLASS_OTHER 0x0040
#define CAPCLASS_SUPER 0x0080
#define CAPCLASS_ALL   0xffff
#endif /* INTERFACE */


/*
** The following structure holds descriptions of the various capabilities.
*/
static struct Caps {
  char cCap;              /* The capability letter */
  unsigned short eClass;  /* The "class" for this capability */
  unsigned nUser;         /* Number of users with this capability */
  char *zAbbrev;          /* Abbreviated mnemonic name */
  char *zOneLiner;        /* One-line summary */
} aCap[] = {
  { 'a', CAPCLASS_SUPER, 0,
    "Admin", "Create and delete users" },
  { 'b', CAPCLASS_WIKI|CAPCLASS_TKT, 0,
    "Attach", "Add attachments to wiki or tickets" },
  { 'c', CAPCLASS_TKT, 0,
    "Append-Tkt", "Append to existing tickets" },
  /*
  ** d unused since fork from CVSTrac;
  ** see https://fossil-scm.org/forum/forumpost/43c78f4bef
  */
  { 'e', CAPCLASS_DATA, 0,
    "View-PII", "View sensitive info such as email addresses" },
  { 'f', CAPCLASS_WIKI, 0,
    "New-Wiki", "Create new wiki pages" },
  { 'g', CAPCLASS_DATA, 0,
    "Clone", "Clone the repository" },
  { 'h', CAPCLASS_OTHER, 0,
    "Hyperlinks", "Show hyperlinks to detailed repository history" },
  { 'i', CAPCLASS_CODE, 0,
    "Check-In", "Check-in code changes" },
  { 'j', CAPCLASS_WIKI, 0,
    "Read-Wiki", "View wiki pages" },
  { 'k', CAPCLASS_WIKI, 0,
    "Write-Wiki", "Edit wiki pages" },
  { 'l', CAPCLASS_WIKI|CAPCLASS_SUPER, 0,
    "Mod-Wiki", "Moderator for wiki pages" },
  { 'm', CAPCLASS_WIKI, 0,
    "Append-Wiki", "Append to wiki pages" },
  { 'n', CAPCLASS_TKT, 0,
    "New-Tkt", "Create new tickets" },
  { 'o', CAPCLASS_CODE, 0,
    "Check-Out", "Check out code" },
  { 'p', CAPCLASS_OTHER, 0,
    "Password", "Change your own password" },
  { 'q', CAPCLASS_TKT|CAPCLASS_SUPER, 0,
    "Mod-Tkt", "Moderate tickets" },
  { 'r', CAPCLASS_TKT, 0,
    "Read-Tkt", "View tickets" },
  { 's', CAPCLASS_SUPER, 0,
    "Superuser", "Setup and configure the repository" },
  { 't', CAPCLASS_TKT, 0,
    "Reports", "Create new ticket report formats" },
  { 'u', CAPCLASS_OTHER, 0,
    "Reader", "Inherit all the capabilities of the \"reader\" user" },
  { 'v', CAPCLASS_OTHER, 0,
    "Developer", "Inherit all capabilities of the \"developer\" user" },
  { 'w', CAPCLASS_TKT, 0,
    "Write-Tkt", "Edit tickets" },
  { 'x', CAPCLASS_DATA, 0,
    "Private", "Push and/or pull private branches" },
  { 'y', CAPCLASS_SUPER, 0,
    "Write-UV", "Push unversioned content" },
  { 'z', CAPCLASS_CODE, 0,
    "Zip-Download", "Download a ZIP archive, tarball, or SQL archive" },
  { '2', CAPCLASS_FORUM, 0,
    "Forum-Read", "Read forum posts by others" },
  { '3', CAPCLASS_FORUM, 0,
    "Forum-Write", "Create new forum messages" },
  { '4', CAPCLASS_FORUM, 0,
    "Forum-Trusted", "Create forum messages that bypass moderation" },
  { '5', CAPCLASS_FORUM|CAPCLASS_SUPER, 0,
    "Forum-Mod", "Moderator for forum messages" },
  { '6', CAPCLASS_FORUM|CAPCLASS_SUPER, 0,
    "Forum-Admin", "Grant capability '4' to other users" },
  { '7', CAPCLASS_ALERT, 0,
    "Alerts", "Sign up for email alerts" },
  { 'A', CAPCLASS_ALERT|CAPCLASS_SUPER, 0,
    "Announce", "Send announcements to all subscribers" },
  { 'C', CAPCLASS_FORUM, 0,
    "Chat",  "Read and/or writes messages in the chatroom" },
  { 'D', CAPCLASS_OTHER, 0,
    "Debug", "Enable debugging features" },
};

/*
** Populate the aCap[].nUser values based on the current content
** of the USER table.
*/
void capabilities_count(void){
  int i;
  static int done = 0;
  Stmt q;
  if( done ) return;
  db_prepare(&q, "SELECT fullcap(cap) FROM user");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zCap = db_column_text(&q, 0);
    if( zCap==0 || zCap[0]==0 ) continue;
    for(i=0; i<(int)(sizeof(aCap)/sizeof(aCap[0])); i++){
      if( strchr(zCap, aCap[i].cCap) ) aCap[i].nUser++;
    }
  }
  db_finalize(&q);
  done = 1;
}


/*
** Generate HTML that lists all of the capability letters together with
** a brief summary of what each letter means.
*/
void capabilities_table(unsigned mClass){
  int i;
  if( g.perm.Admin ) capabilities_count();
  @ <table>
  @ <tbody>
  for(i=0; i<(int)(sizeof(aCap)/sizeof(aCap[0])); i++){
    int n;
    if( (aCap[i].eClass & mClass)==0 ) continue;
    @ <tr><th valign="top">%c(aCap[i].cCap)</th>
    @  <td>%h(aCap[i].zAbbrev)</td><td>%h(aCap[i].zOneLiner)</td>\
    n = aCap[i].nUser;
    if( n && g.perm.Admin ){
      @ <td><a href="%R/setup_ulist?with=%c(aCap[i].cCap)">\
      @ %d(n) user%s(n>1?"s":"")</a></td>\
    }
    @ </tr>
  }
  @ </tbody>
  @ </table>
}

/*
** Generate a "capability summary table" that shows the major capabilities
** against the various user categories.
*/
void capability_summary(void){
  Stmt q;
  CapabilityString *pCap;
  char *zSelfCap;
  char *zPubPages = db_get("public-pages",0);
  int hasPubPages = zPubPages && zPubPages[0];

  pCap = capability_add(0, db_get("default-perms","u"));
  capability_expand(pCap);
  zSelfCap = capability_string(pCap);
  capability_free(pCap);

  db_prepare(&q,
    "WITH t(id,seq) AS (VALUES('nobody',1),('anonymous',2),('reader',3),"
                       "('developer',4))"
    " SELECT id, CASE WHEN user.login='nobody' THEN user.cap"
                    " ELSE fullcap(user.cap) END,seq,1"
    "   FROM t LEFT JOIN user ON t.id=user.login"
    " UNION ALL"
    " SELECT 'Public Pages', %Q, 100, %d"
    " UNION ALL"
    " SELECT 'New User Default', %Q, 110, 1"
    " UNION ALL"
    " SELECT 'Regular User', fullcap(capunion(cap)), 200, count(*) FROM user"
    " WHERE cap NOT GLOB '*[as]*' AND login NOT IN (SELECT id FROM t)"
    " UNION ALL"
    " SELECT 'Administrator', fullcap(capunion(cap)), 300, count(*) FROM user"
    " WHERE cap GLOB '*[as]*'"
    " ORDER BY 3 ASC",
    zSelfCap, hasPubPages, zSelfCap
  );
  @ <table id='capabilitySummary' cellpadding="0" cellspacing="0" border="1">
  @ <tr><th>&nbsp;<th>Code<th>Forum<th>Tickets<th>Wiki<th>Chat\
  @ <th>Unversioned Content</th></tr>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zId = db_column_text(&q, 0);
    const char *zCap = db_column_text(&q, 1);
    int n = db_column_int(&q, 3);
    int eType;
    static const char *const azType[] = { "off", "read", "write" };
    static const char *const azClass[] =
        { "capsumOff", "capsumRead", "capsumWrite" };

    if( n==0 ) continue;

    /* Code */
    if( db_column_int(&q,2)<10 ){
      @ <tr><th align="right"><tt>"%h(zId)"</tt></th>
    }else if( n>1 ){
      @ <tr><th align="right">%d(n) %h(zId)s</th>
    }else{
      @ <tr><th align="right">%h(zId)</th>
    }
    if( sqlite3_strglob("*[asi]*",zCap)==0 ){
      eType = 2;
    }else if( sqlite3_strglob("*[oz]*",zCap)==0 ){
      eType = 1;
    }else{
      eType = 0;
    }
    @ <td class="%s(azClass[eType])">%s(azType[eType])</td>

    /* Forum */
    if( sqlite3_strglob("*[as3456]*",zCap)==0 ){
      eType = 2;
    }else if( sqlite3_strglob("*2*",zCap)==0 ){
      eType = 1;
    }else{
      eType = 0;
    }
    @ <td class="%s(azClass[eType])">%s(azType[eType])</td>

    /* Ticket */
    if( sqlite3_strglob("*[ascnqtw]*",zCap)==0 ){
      eType = 2;
    }else if( sqlite3_strglob("*r*",zCap)==0 ){
      eType = 1;
    }else{
      eType = 0;
    }
    @ <td class="%s(azClass[eType])">%s(azType[eType])</td>

    /* Wiki */
    if( sqlite3_strglob("*[asdfklm]*",zCap)==0 ){
      eType = 2;
    }else if( sqlite3_strglob("*j*",zCap)==0 ){
      eType = 1;
    }else{
      eType = 0;
    }
    @ <td class="%s(azClass[eType])">%s(azType[eType])</td>

    /* Chat */
    if( sqlite3_strglob("*C*",zCap)==0 ){
      eType = 2;
    }else{
      eType = 0;
    }
    @ <td class="%s(azClass[eType])">%s(azType[eType])</td>

    /* Unversioned */
    if( sqlite3_strglob("*y*",zCap)==0 ){
      eType = 2;
    }else if( sqlite3_strglob("*[ioas]*",zCap)==0 ){
      eType = 1;
    }else{
      eType = 0;
    }
    @ <td class="%s(azClass[eType])">%s(azType[eType])</td>

  }
  db_finalize(&q);
  @ </table>
}
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**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to a simple text-based CAPTCHA.  Though eaily
** This file contains code to a simple text-based CAPTCHA.  Though easily
** defeated by a sophisticated attacker, this CAPTCHA does at least make
** scripting attacks more difficult.
*/
#include <assert.h>
#include "config.h"
#include <assert.h>
#include "captcha.h"

#if INTERFACE
#define CAPTCHA 3  /* Which captcha rendering to use */
#define CAPTCHA 2  /* Which captcha rendering to use */
#endif

/*
** Convert a hex digit into a value between 0 and 15
*/
static int hexValue(char c){
int hex_digit_value(char c){
  if( c>='0' && c<='9' ){
    return c - '0';
  }else if( c>='a' && c<='f' ){
    return c - 'a' + 10;
  }else if( c>='A' && c<='F' ){
    return c - 'A' + 10;
  }else{
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/*
** Render an 8-character hexadecimal string as ascii art.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = malloc( 500 );
  char *z = fossil_malloc( 9*12*3*strlen(zPw) + 8 );
  int i, j, k, m;

  k = 0;
  for(i=0; i<6; i++){
    for(j=0; j<8; j++){
      unsigned char v = hexValue(zPw[j]);
    for(j=0; zPw[j]; j++){
      unsigned char v = hex_digit_value(zPw[j]);
      v = (aFont1[v] >> ((5-i)*4)) & 0xf;
      for(m=8; m>=1; m = m>>1){
        if( v & m ){
          z[k++] = 'X';
          z[k++] = 'X';
          z[k++] = 0xe2;
          z[k++] = 0x96;
          z[k++] = 0x88;
          z[k++] = 0xe2;
          z[k++] = 0x96;
          z[k++] = 0x88;
        }else{
          z[k++] = ' ';
          z[k++] = ' ';
        }
      }
      z[k++] = ' ';
      z[k++] = ' ';
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;
}
#endif /* CAPTCHA==1 */

#if CAPTCHA==2
/*
** A 5x7 pixel bitmap font for hexadecimal digits
*/
static const unsigned char aFont2[] = {
 /* 0 */  0x0e, 0x13, 0x15, 0x19, 0x11, 0x11, 0x0e,
 /* 1 */  0x02, 0x06, 0x0A, 0x02, 0x02, 0x02, 0x02,
 /* 2 */  0x0e, 0x11, 0x01, 0x02, 0x04, 0x08, 0x1f,
 /* 3 */  0x0e, 0x11, 0x01, 0x06, 0x01, 0x11, 0x0e,
 /* 4 */  0x02, 0x06, 0x0A, 0x12, 0x1f, 0x02, 0x02,
 /* 5 */  0x1f, 0x10, 0x1e, 0x01, 0x01, 0x11, 0x0e,
 /* 6 */  0x0e, 0x11, 0x10, 0x1e, 0x11, 0x11, 0x0e,
 /* 7 */  0x1f, 0x01, 0x02, 0x04, 0x08, 0x08, 0x08,
 /* 8 */  0x0e, 0x11, 0x11, 0x0e, 0x11, 0x11, 0x0e,
 /* 9 */  0x0e, 0x11, 0x11, 0x0f, 0x01, 0x11, 0x0e,
 /* A */  0x0e, 0x11, 0x11, 0x11, 0x1f, 0x11, 0x11,
 /* B */  0x1e, 0x11, 0x11, 0x1e, 0x11, 0x11, 0x1e,
 /* C */  0x0e, 0x11, 0x10, 0x10, 0x10, 0x11, 0x0e,
 /* D */  0x1c, 0x12, 0x11, 0x11, 0x11, 0x12, 0x1c,
 /* E */  0x1f, 0x10, 0x10, 0x1c, 0x10, 0x10, 0x1f,
 /* F */  0x1f, 0x10, 0x10, 0x1e, 0x10, 0x10, 0x10,
};

/*
** Render an 8-character hexadecimal string as ascii art.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = fossil_malloc( 160*strlen(zPw) + 9 );
  int i, j, k, m;

  k = 0;
  for(i=0; i<7; i++){
    for(j=0; zPw[j]; j++){
      unsigned char v = hex_digit_value(zPw[j]);
      v = aFont2[v*7+i];
      for(m=16; m>=1; m = m>>1){
        if( v & m ){
          z[k++] = 0xe2;
          z[k++] = 0x96;
          z[k++] = 0x88;
          z[k++] = 0xe2;
          z[k++] = 0x96;
          z[k++] = 0x88;
        }else{
          z[k++] = ' ';
          z[k++] = ' ';
        }
      }
      z[k++] = ' ';
      z[k++] = ' ';
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;     
  return z;
}
#endif /* CAPTCHA==1 */
#endif /* CAPTCHA==2 */


#if CAPTCHA==2
static const char *azFont2[] = {
#if CAPTCHA==3
static const char *const azFont3[] = {
 /* 0 */
 "  __  ",
 " /  \\ ",
 "| () |",
 " \\__/ ",

 /* 1 */
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 " ____ ",
 "|__  |",
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 /* 8 */
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 "\\___/",

 /* 9 */
 " ___ ",
 "/ _ \\",
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/*
** Render an 8-digit hexadecimal string as ascii arg.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = malloc( 300 );
  char *z = fossil_malloc( 7*4*strlen(zPw) + 5 );
  int i, j, k, m;
  const char *zChar;

  k = 0;
  for(i=0; i<4; i++){
    for(j=0; j<8; j++){
      unsigned char v = hexValue(zPw[j]);
      zChar = azFont2[4*v + i];
    for(j=0; zPw[j]; j++){
      unsigned char v = hex_digit_value(zPw[j]);
      zChar = azFont3[4*v + i];
      for(m=0; zChar[m]; m++){
        z[k++] = zChar[m];
      }
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;     
  return z;
}
#endif /* CAPTCHA==2 */
#endif /* CAPTCHA==3 */

#if CAPTCHA==3
static const char *azFont3[] = {
#if CAPTCHA==4
static const char *const azFont4[] = {
  /* 0 */
  "  ___  ",
  " / _ \\ ",
  "| | | |",
  "| | | |",
  "| |_| |",
  " \\___/ ",
                                                                                                               

  /* 1 */
  " __ ",
  "/_ |",
  " | |",
  " | |",
  " | |",
  " |_|",
                                                                                                               

  /* 2 */
  " ___  ",
  "|__ \\ ",
  "   ) |",
  "  / / ",
  " / /_ ",
  "|____|",
                                                                                                               

  /* 3 */
  " ____  ",
  "|___ \\ ",
  "  __) |",
  " |__ < ",
  " ___) |",
  "|____/ ",
                                                                                                               

  /* 4 */
  " _  _   ",
  "| || |  ",
  "| || |_ ",
  "|__   _|",
  "   | |  ",
  "   |_|  ",
                                                                                                               

  /* 5 */
  " _____ ",
  "| ____|",
  "| |__  ",
  "|___ \\ ",
  " ___) |",
  "|____/ ",
                                                                                                               

  /* 6 */
  "   __  ",
  "  / /  ",
  " / /_  ",
  "| '_ \\ ",
  "| (_) |",
  " \\___/ ",
                                                                                                               

  /* 7 */
  " ______ ",
  "|____  |",
  "    / / ",
  "   / /  ",
  "  / /   ",
  " /_/    ",
                                                                                                               

  /* 8 */
  "  ___  ",
  " / _ \\ ",
  "| (_) |",
  " > _ < ",
  "| (_) |",
  " \\___/ ",
                                                                                                               

  /* 9 */
  "  ___  ",
  " / _ \\ ",
  "| (_) |",
  " \\__, |",
  "   / / ",
  "  /_/  ",
                                                                                                               

  /* A */
  "          ",
  "    /\\    ",
  "   /  \\   ",
  "  / /\\ \\  ",
  " / ____ \\ ",
  "/_/    \\_\\",
                                                                                                               

  /* B */
  " ____  ",
  "|  _ \\ ",
  "| |_) |",
  "|  _ < ",
  "| |_) |",
  "|____/ ",
                                                                                                               

  /* C */
  "  _____ ",
  " / ____|",
  "| |     ",
  "| |     ",
  "| |____ ",
  " \\_____|",
                                                                                                               

  /* D */
  " _____  ",
  "|  __ \\ ",
  "| |  | |",
  "| |  | |",
  "| |__| |",
  "|_____/ ",
                                                                                                               

  /* E */
  " ______ ",
  "|  ____|",
  "| |__   ",
  "|  __|  ",
  "| |____ ",
  "|______|",
                                                                                                               

  /* F */
  " ______ ",
  "|  ____|",
  "| |__   ",
  "|  __|  ",
  "| |     ",
  "|_|     ",
};

/*
** Render an 8-digit hexadecimal string as ascii arg.
** Space to hold the result is obtained from malloc() and should be freed
** by the caller.
*/
char *captcha_render(const char *zPw){
  char *z = malloc( 600 );
  char *z = fossil_malloc( 10*6*strlen(zPw) + 7 );
  int i, j, k, m;
  const char *zChar;
  unsigned char x;
  int y;

  k = 0;
  for(i=0; i<6; i++){
    x = 0;
    for(j=0; j<8; j++){
      unsigned char v = hexValue(zPw[j]);
      zChar = azFont3[6*v + i];
    for(j=0; zPw[j]; j++){
      unsigned char v = hex_digit_value(zPw[j]);
      x = (x<<4) + v;
      switch( x ){
        case 0x7a:
        case 0xfa:
          y = 3;
          break;
        case 0x47:
          y = 2;
          break;
        case 0xf6:
        case 0xa9:
        case 0xa4:
        case 0xa1:
        case 0x9a:
        case 0x76:
        case 0x61:
        case 0x67:
        case 0x69:
        case 0x41:
        case 0x42:
        case 0x43:
        case 0x4a:
          y = 1;
          break;
        default:
          y = 0;
          break;
      }
      zChar = azFont4[6*v + i];
      while( y && zChar[0]==' ' ){ y--; zChar++; }
      while( y && z[k-1]==' ' ){ y--; k--; }
      for(m=0; zChar[m]; m++){
        z[k++] = zChar[m];
      }
    }
    z[k++] = '\n';
  }
  z[k] = 0;
  return z;     
  return z;
}
#endif /* CAPTCHA==3 */
#endif /* CAPTCHA==4 */

/*
** COMMAND: test-captcha
**
** Render an ASCII-art captcha for numbers given on the command line.
*/
void test_captcha(void){
  int i;
  unsigned int v;
  char *z;

  for(i=2; i<g.argc; i++){
    char zHex[30];
    v = (unsigned int)atoi(g.argv[i]);
    sprintf(zHex, "%x", v);
    sqlite3_snprintf(sizeof(zHex), zHex, "%x", v);
    z = captcha_render(zHex);
    printf("%s:\n%s", zHex, z);
    fossil_print("%s:\n%s", zHex, z);
    free(z);
  }
}

/*
** Compute a seed value for a captcha.  The seed is public and is sent
** has a hidden parameter with the page that contains the captcha.  Knowledge
** as a hidden parameter with the page that contains the captcha.  Knowledge
** of the seed is insufficient for determining the captcha without additional
** information held only on the server and never revealed.
*/
unsigned int captcha_seed(void){
  unsigned int x;
  sqlite3_randomness(sizeof(x), &x);
  x &= 0x7fffffff;
  return x;
}

/* The SQL that will rotate the the captcha-secret. */
static const char captchaSecretRotationSql[] = 
@ SAVEPOINT rotate;
@ DELETE FROM config
@  WHERE name GLOB 'captcha-secret-*'
@    AND mtime<unixepoch('now','-6 hours');
@ UPDATE config
@    SET name=format('captcha-secret-%%d',substr(name,16)+1)
@  WHERE name GLOB 'captcha-secret-*';
@ UPDATE config
@    SET name='captcha-secret-1', mtime=unixepoch()
@  WHERE name='captcha-secret';
@ REPLACE INTO config(name,value,mtime)
@   VALUES('captcha-secret',%Q,unixepoch());
@ RELEASE rotate;
;


/*
** Create a new random captcha-secret.  Rotate the old one into
** the captcha-secret-N backups.  Purge captch-secret-N backups
** older than 6 hours.
**
** Do this on the current database and in all other databases of
** the same login group.
*/
void captcha_secret_rotate(void){
  char *zNew = db_text(0, "SELECT lower(hex(randomblob(20)))");
  char *zSql = mprintf(captchaSecretRotationSql/*works-like:"%Q"*/, zNew);
  char *zErrs = 0;
  fossil_free(zNew);
  db_unprotect(PROTECT_CONFIG);
  db_begin_transaction();
  sqlite3_exec(g.db, zSql, 0, 0, &zErrs);
  db_protect_pop();
  if( zErrs && zErrs[0] ){
    db_rollback_transaction();
    fossil_fatal("Unable to rotate captcha-secret\n%s\nERROR: %s\n",
                 zSql, zErrs);
  }
  db_end_transaction(0);
  login_group_sql(zSql, "", "", &zErrs);
  if( zErrs ){
    sqlite3_free(zErrs);  /* Silently ignore errors on other repos */
  }
  fossil_free(zSql);
}

/*
** Return the value of the N-th more recent captcha-secret.  The
** most recent captch-secret is 0.  Others are prior captcha-secrets
** that have expired, but are retained for a limited period of time
** so that pending anonymous login cookies and/or captcha dialogs
** don't malfunction when the captcha-secret changes.
**
** Clients should start by using the 0-th captcha-secret.  Only if
** that one does not work should they advance to 1 and 2 and so forth,
** until this routine returns a NULL pointer.
**
** The value returned is a string obtained from fossil_malloc() and
** should be freed by the caller.
**
** The 0-th captcha secret is the value of Config.Name='captcha-secret'.
** For N>0, the value is in Config.Name='captcha-secret-$N'.
*/
char *captcha_secret(int N){
  if( N==0 ){
    return db_text(0, "SELECT value FROM config WHERE name='captcha-secret'");
  }else{
    return db_text(0, 
        "SELECT value FROM config"
        " WHERE name='captcha-secret-%d'"
        "   AND mtime>unixepoch('now','-6 hours')", N);
  }
}

/*
** Translate a captcha seed value into the captcha password string.
** The returned string is static and overwritten on each call to
** this function.
**
** Use the N-th captcha secret to compute the password.  When N==0,
** a valid password is always returned.  A new captcha-secret will
** be created if necessary.  But for N>0, the return value might
** be NULL to indicate that there is no N-th captcha-secret.
*/
char *captcha_decode(unsigned int seed){
  const char *zSecret;
const char *captcha_decode(unsigned int seed, int N){
  char *zSecret;
  const char *z;
  Blob b;
  static char zRes[20];

  zSecret = db_get("captcha-secret", 0);
  zSecret = captcha_secret(N);
  if( zSecret==0 ){
    if( N>0 ) return 0;
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "REPLACE INTO config(name,value)"
      " VALUES('captcha-secret', lower(hex(randomblob(20))));"
    );
    db_protect_pop();
    zSecret = db_get("captcha-secret", 0);
    zSecret = captcha_secret(0);
    assert( zSecret!=0 );
  }
  blob_init(&b, 0, 0);
  blob_appendf(&b, "%s-%x", zSecret, seed);
  sha1sum_blob(&b, &b);
  z = blob_buffer(&b);
  memcpy(zRes, z, 8);
  zRes[8] = 0;
  fossil_free(zSecret);
  return zRes;
}

/*
** Return true if a CAPTCHA is required for editing wiki or tickets or for
** adding attachments.
**
** A CAPTCHA is required in those cases if the user is not logged in (if they
** are user "nobody") and if the "require-captcha" setting is true.  The
** "require-captcha" setting is controlled on the Admin/Access page.  It
** defaults to true.
*/
int captcha_needed(void){
  return login_is_nobody() && db_get_boolean("require-captcha", 1);
}

/*
** If a captcha is required but the correct captcha code is not supplied
** in the query parameters, then return false (0).
**
** If no captcha is required or if the correct captcha is supplied, return
** true (non-zero).
**
** The query parameters examined are "captchaseed" for the seed value and
** "captcha" for text that the user types in response to the captcha prompt.
*/
int captcha_is_correct(int bAlwaysNeeded){
  const char *zSeed;
  const char *zEntered;
  const char *zDecode;
  char z[30];
  int i;
  int n = 0;
  if( !bAlwaysNeeded && !captcha_needed() ){
    return 1;  /* No captcha needed */
  }
  zSeed = P("captchaseed");
  if( zSeed==0 ) return 0;
  zEntered = P("captcha");
  if( zEntered==0 || strlen(zEntered)!=8 ) return 0;
  do{
    zDecode = captcha_decode((unsigned int)atoi(zSeed), n++);
    if( zDecode==0 ) return 0;
    assert( strlen(zDecode)==8 );
    for(i=0; i<8; i++){
      char c = zEntered[i];
      if( c>='A' && c<='F' ) c += 'a' - 'A';
      if( c=='O' ) c = '0';
      z[i] = c;
    }
  }while( strncmp(zDecode,z,8)!=0 );
  return 1;
}

/*
** Generate a captcha display together with the necessary hidden parameter
** for the seed and the entry box into which the user will type the text of
** the captcha.  This is typically done at the very bottom of a form.
**
** This routine is a no-op if no captcha is required.
**
** Flag values:
**
**     0x01     Show the "Submit" button in the form.
**     0x02     Always generate the captcha, even if not required
*/
void captcha_generate(int mFlags){
  unsigned int uSeed;
  const char *zDecoded;
  char *zCaptcha;

  if( !captcha_needed() && (mFlags & 0x02)==0 ) return;
  uSeed = captcha_seed();
  zDecoded = captcha_decode(uSeed, 0);
  zCaptcha = captcha_render(zDecoded);
  @ <div class="captcha"><table class="captcha"><tr><td><pre class="captcha">
  @ %h(zCaptcha)
  @ </pre>
  @ Enter security code shown above:
  @ <input type="hidden" name="captchaseed" value="%u(uSeed)">
  @ <input type="text" name="captcha" size="8" autofocus>
  if( mFlags & 0x01 ){
    @ <input type="submit" value="Submit">
  }
  @ <br/>\
  captcha_speakit_button(uSeed, 0);
  @ </td></tr></table></div>
}

/*
** Add a "Speak the captcha" button.
*/
void captcha_speakit_button(unsigned int uSeed, const char *zMsg){
  if( zMsg==0 ) zMsg = "Speak the text";
  @ <input aria-label="%h(zMsg)" type="button" value="%h(zMsg)" \
  @ id="speakthetext">
  @ <script nonce="%h(style_nonce())">/* captcha_speakit_button() */
  @ document.getElementById("speakthetext").onclick = function(){
  @   var audio = window.fossilAudioCaptcha \
  @ || new Audio("%R/captcha-audio/%u(uSeed)");
  @   window.fossilAudioCaptcha = audio;
  @   audio.currentTime = 0;
  @   audio.play();
  @ }
  @ </script>
}

/*
** WEBPAGE: test-captcha
**
** If the name query parameter is provided, then render the hex value of
** the name using the captcha font.
**
** Otherwise render the captcha screen.  The "show-button" parameter causes
** the submit button to be rendered.
*/
void captcha_test(void){
  const char *zPw = P("name");
  if( zPw==0 || zPw[0]==0 ){
    (void)exclude_spiders(1);
    @ <hr><p>The captcha is shown above.  Add a name=HEX query parameter
    @ to see how HEX would be rendered in the current captcha font.
    @ <h2>Debug/Testing Values:</h2>
    @ <ul>
    @ <li> g.isHuman = %d(g.isHuman)
    @ <li> g.zLogin = %h(g.zLogin)
    @ <li> login_cookie_welformed() = %d(login_cookie_wellformed())
    @ <li> captcha_is_correct(1) = %d(captcha_is_correct(1)).
    @ </ul>
    style_finish_page();
  }else{
    style_set_current_feature("test");
    style_header("Captcha Test");
    @ <pre class="captcha">
    @ %s(captcha_render(zPw))
    @ </pre>
    style_finish_page();
  }
}

/*
** Check to see if the current request is coming from an agent that 
** self-identifies as a spider.
**
** If the agent does not claim to be a spider or if the user has logged
** in (even as anonymous), then return 0 without doing anything.
**
** But if the user agent does self-identify as a spider and there is
** no login, offer a captcha challenge to allow the user agent to prove
** that he is human and return non-zero.
**
** If the bTest argument is non-zero, then show the captcha regardless of
** how the agent identifies.  This is used for testing only.
*/
int exclude_spiders(int bTest){
  if( !bTest ){
    if( g.isHuman ) return 0;  /* This user has already proven human */
    if( g.zLogin!=0 ) return 0;  /* Logged in.  Consider them human */
    if( login_cookie_wellformed() ){
      /* Logged into another member of the login group */
      return 0;
    }
  }

  /* This appears to be a spider.  Offer the captcha */
  style_set_current_feature("captcha");
  style_header("I think you are a robot");
  style_submenu_enable(0);
  @ <form method='POST' action='%R/ityaar'>
  @ <p>You seem like a robot.
  @
  @ <p>If you are human, you can prove that by solving the captcha below,
  @ after which you will be allowed to proceed.
  if( bTest ){
    @ <input type="hidden" name="istest" value="1">
  }
  captcha_generate(3);
  @ </form>
  if( !bTest ){
    if( P("fossil-goto")==0 ){
      cgi_set_cookie("fossil-goto", cgi_reconstruct_original_url(), 0, 600);
    }
    cgi_append_header("X-Robot: 1\r\n");
    style_finish_page();
  }
  return 1;
}

/*
** WEBPAGE: ityaar
**
** This is the action for the form that is the captcha.  Not intended
** for external use.  "ityaar" is an acronym "I Think You Are A Robot".
**
** If the captcha is correctly solved, then an anonymous login cookie
** is set.  Regardless of whether or not the captcha was solved, this
** page always redirects to the fossil-goto cookie.
*/
void captcha_callback(void){
  int bTest = atoi(PD("istest","0"));
  if( captcha_is_correct(1) ){
    if( bTest==0 ){
      if( !login_cookie_wellformed() ){
        /* ^^^^--- Don't overwrite a valid login on another repo! */
        login_set_anon_cookie(0, 0);
      }
      cgi_append_header("X-Robot: 0\r\n");
    }
    login_redirect_to_g();
  }else{
    g.isHuman = 0;
    (void)exclude_spiders(bTest);
    if( bTest ){
      @ <hr><p>Wrong code.  Try again
      style_finish_page();
    }
  }
}


/*
** Generate a WAV file that reads aloud the hex digits given by
** zHex.
*/
static void captcha_wav(const char *zHex, Blob *pOut){
  int i;
  const int szWavHdr = 44;
  blob_init(pOut, 0, 0);
  blob_resize(pOut, szWavHdr);  /* Space for the WAV header */
  pOut->nUsed = szWavHdr;
  memset(pOut->aData, 0, szWavHdr);
  if( zHex==0 || zHex[0]==0 ) zHex = "0";
  for(i=0; zHex[i]; i++){
    int v = hex_digit_value(zHex[i]);
    int sz;
    int nData;
    const unsigned char *pData;
    char zSoundName[50];
    sqlite3_snprintf(sizeof(zSoundName),zSoundName,"sounds/%c.wav",
                     "0123456789abcdef"[v]);
    /* Extra silence in between letters */
    if( i>0 ){
      int nQuiet = 3000;
      blob_resize(pOut, pOut->nUsed+nQuiet);
      memset(pOut->aData+pOut->nUsed-nQuiet, 0x80, nQuiet);
    }
    pData = builtin_file(zSoundName, &sz);
    nData = sz - szWavHdr;
    blob_resize(pOut, pOut->nUsed+nData);
    memcpy(pOut->aData+pOut->nUsed-nData, pData+szWavHdr, nData);
    if( zHex[i+1]==0 ){
      int len = pOut->nUsed + 36;
      memcpy(pOut->aData, pData, szWavHdr);
      pOut->aData[4] = (char)(len&0xff);
      pOut->aData[5] = (char)((len>>8)&0xff);
      pOut->aData[6] = (char)((len>>16)&0xff);
      pOut->aData[7] = (char)((len>>24)&0xff);
      len = pOut->nUsed;
      pOut->aData[40] = (char)(len&0xff);
      pOut->aData[41] = (char)((len>>8)&0xff);
      pOut->aData[42] = (char)((len>>16)&0xff);
      pOut->aData[43] = (char)((len>>24)&0xff);
    }
  }
}

/*
** WEBPAGE: /captcha-audio
**
** Return a WAV file that pronounces the digits of the captcha that
** is determined by the seed given in the name= query parameter.
*/
void captcha_wav_page(void){
  const char *zSeed = PD("name","0");
  const char *zDecode = captcha_decode((unsigned int)atoi(zSeed), 0);
  Blob audio;
  captcha_wav(zDecode, &audio);
  cgi_set_content_type("audio/wav");
  cgi_set_content(&audio);
}

/*
** WEBPAGE: /test-captcha-audio
**
** Return a WAV file that pronounces the hex digits of the name=
** query parameter.
*/
void captcha_test_wav_page(void){
  const char *zSeed = P("name");
  Blob audio;
  captcha_wav(zSeed, &audio);
  cgi_set_content_type("audio/wav");
  cgi_set_content(&audio);
}
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains C functions and procedures that provide useful
** services to CGI programs.  There are procedures for parsing and
** dispensing QUERY_STRING parameters and cookies, the "mprintf()"
** formatting function and its cousins, and routines to encode and
** decode strings in HTML or HTTP.
** This file began as a set of C functions and procedures used intepret
** CGI environment variables for Fossil web pages that were invoked by
** CGI.  That's where the file name comes from.  But over the years it
** has grown to incorporate lots of related functionality, including:
**
**   *  Interpreting CGI environment variables when Fossil is run as
**      CGI (the original purpose).
**
**   *  Interpreting HTTP requests received directly or via an SSH tunnel.
**
**   *  Interpreting SCGI requests
**
**   *  Generating appropriate replies to CGI, SCGI, and HTTP requests.
**
**   *  Listening for incoming HTTP requests and dispatching them.
**      (Used by "fossil ui" and "fossil server", for example).
**
** So, even though the name of this file implies that it only deals with
** CGI, in fact, the code in this file is used to interpret webpage requests
** received by a variety of means, and to generate well-formatted replies
** to those requests.
**
** The code in this file abstracts the web-request so that downstream
** modules that generate the body of the reply (based on the requested page)
** do not need to know if the request is coming from CGI, direct HTTP,
** SCGI, or some other means.
**
** This module gathers information about web page request into a key/value
** store.  Keys and values come from:
**
**    *  Query parameters
**    *  POST parameter
**    *  Cookies
**    *  Environment variables
**
** The parameters are accessed using cgi_parameter() and similar functions
** or their convenience macros P() and similar.
**
** Environment variable parameters are set as if the request were coming
** in over CGI even if the request arrived via SCGI or direct HTTP.  Thus
** the downstream modules that are trying to interpret the request do not
** need to know the request protocol - they can just request the values
** of environment variables and everything will always work.
**
** This file contains routines used by Fossil when it is acting as a
** CGI client.  For the code used by Fossil when it is acting as a
** CGI server (for the /ext webpage) see the "extcgi.c" source file.
*/
#include "config.h"
#ifdef __MINGW32__
#ifdef _WIN32
# include <windows.h>           /* for Sleep once server works again */
# include <winsock2.h>          /* socket operations */
# if !defined(_WIN32_WINNT)
#  define _WIN32_WINNT 0x0501
# endif
# include <winsock2.h>
# define sleep Sleep            /* windows does not have sleep, but Sleep */
# include <ws2tcpip.h>          
# include <ws2tcpip.h>
#else
# include <sys/socket.h>
# include <sys/un.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <sys/times.h>
# include <sys/time.h>
# include <sys/wait.h>
# include <sys/select.h>
# include <errno.h>
#endif
#ifdef __EMX__
  typedef int socklen_t;
#endif
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <assert.h>
#include "cgi.h"
#include "cygsup.h"

#if INTERFACE
/*
** Shortcuts for cgi_parameter.  P("x") returns the value of query parameter
** or cookie "x", or NULL if there is no such parameter or cookie.  PD("x","y")
** does the same except "y" is returned in place of NULL if there is not match.
*/
#define P(x)        cgi_parameter((x),0)
#define PD(x,y)     cgi_parameter((x),(y))
#define QP(x)       quotable_string(cgi_parameter((x),0))
#define QPD(x,y)    quotable_string(cgi_parameter((x),(y)))
#define P(x)          cgi_parameter((x),0)
#define PD(x,y)       cgi_parameter((x),(y))
#define PT(x)         cgi_parameter_trimmed((x),0)
#define PDT(x,y)      cgi_parameter_trimmed((x),(y))
#define PB(x)         cgi_parameter_boolean(x)
#define PCK(x)        cgi_parameter_checked(x,1)
#define PIF(x,y)      cgi_parameter_checked(x,y)
#define P_NoBot(x)    cgi_parameter_nosql((x),0)
#define PD_NoBot(x,y) cgi_parameter_nosql((x),(y))

/*
** Shortcut for the cgi_printf() routine.  Instead of using the
**
**    @ ...
**
** notation provided by the translate.c utility, you can also
** optionally use:
**
**    CX(...)
*/
#define CX cgi_printf

/*
** Destinations for output text.
*/
#define CGI_HEADER   0
#define CGI_BODY     1

/*
** Flags for SSH HTTP clients
*/
#define CGI_SSH_CLIENT           0x0001     /* Client is SSH */
#define CGI_SSH_COMPAT           0x0002     /* Compat for old SSH transport */
#define CGI_SSH_FOSSIL           0x0004     /* Use new Fossil SSH transport */

#endif /* INTERFACE */

/*
** The HTTP reply is generated in two pieces: the header and the body.
** These pieces are generated separately because they are not necessary
** The reply content is generated in two pieces: the header and the body.
** These pieces are generated separately because they are not necessarily
** produced in order.  Parts of the header might be built after all or
** part of the body.  The header and body are accumulated in separate
** Blob structures then output sequentially once everything has been
** built.
**
** Do not confuse the content header with the HTTP header. The content header
** is generated by downstream code.  The HTTP header is generated by the
** cgi_reply() routine below.
**
** The content header and contenty body are *approximately* the <head>
** element and the <body> elements for HTML replies.  However this is only
** approximate. The content header also includes parts of <body> that
** show the banner and menu bar at the top of each page.  Also note that
** not all replies are HTML, but there can still be separate header and
** body sections of the content.
**
** The cgi_destination() interface switch between the buffers.
** The cgi_destination() interface switches between the buffers.
*/
static Blob cgiContent[2] = { BLOB_INITIALIZER, BLOB_INITIALIZER };
static Blob *pContent = &cgiContent[0];

/*
** Set the destination buffer into which to accumulate CGI content.
*/
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    default: {
      cgi_panic("bad destination");
    }
  }
}

/*
** Check to see if the content header or body contains the zNeedle string.
** Return true if it does and false if it does not.
*/
int cgi_header_contains(const char *zNeedle){
  return strstr(blob_str(&cgiContent[0]), zNeedle)!=0;
}
int cgi_body_contains(const char *zNeedle){
  return strstr(blob_str(&cgiContent[1]), zNeedle)!=0;
}

/*
** Append reply content to what already exists.
** Append new reply content to what already exists.
*/
void cgi_append_content(const char *zData, int nAmt){
  blob_append(pContent, zData, nAmt);
}

/*
** Reset the HTTP reply text to be an empty string.
** Reset both reply content buffers to be empty.
*/
void cgi_reset_content(void){
  blob_reset(&cgiContent[0]);
  blob_reset(&cgiContent[1]);
}

/*
** Return a pointer to the CGI output blob.
** Return a pointer to Blob that is currently accumulating reply content.
*/
Blob *cgi_output_blob(void){
  return pContent;
}

/*
** Return the content header as a text string
*/
const char *cgi_header(void){
  return blob_str(&cgiContent[0]);
}

/*
** Combine the header and body of the CGI into a single string.
** Combine the header and body content all into the header buffer.
** In other words, append the body content to the end of the header
** content.
*/
static void cgi_combine_header_and_body(void){
  int size = blob_size(&cgiContent[1]);
  if( size>0 ){
    blob_append(&cgiContent[0], blob_buffer(&cgiContent[1]), size);
    blob_reset(&cgiContent[1]);
  }
}

/*
** Return a pointer to the HTTP reply text.
** Return a pointer to the combined header+body content.
*/
char *cgi_extract_content(int *pnAmt){
char *cgi_extract_content(void){
  cgi_combine_header_and_body();
  return blob_buffer(&cgiContent[0]);
}

/*
** Additional information used to form the HTTP reply
*/
static char *zContentType = "text/html";     /* Content type of the reply */
static char *zReplyStatus = "OK";            /* Reply status description */
static const char *zContentType = "text/html";   /* Content type of the reply */
static const char *zReplyStatus = "OK";          /* Reply status description */
static int iReplyStatus = 200;               /* Reply status code */
static Blob extraHeader = BLOB_INITIALIZER;  /* Extra header text */
static int rangeStart = 0;                   /* Start of Range: */
static int rangeEnd = 0;                     /* End of Range: plus 1 */

/*
** Set the reply content type
** Set the reply content type.
**
** The reply content type defaults to "text/html".  It only needs to be
** changed (by calling this routine) in the exceptional case where some
** other content type is being returned.
*/
void cgi_set_content_type(const char *zType){
  zContentType = mprintf("%s", zType);
  zContentType = fossil_strdup(zType);
}

/*
** Erase any existing reply content.  Replace is with a pNewContent.
**
** This routine erases pNewContent.  In other words, it move pNewContent
** Set the reply content to the specified BLOB.
** into the content buffer.
*/
void cgi_set_content(Blob *pNewContent){
  cgi_reset_content();
  cgi_destination(CGI_HEADER);
  cgiContent[0] = *pNewContent;
  blob_zero(pNewContent);
}

/*
** Set the reply status code
*/
void cgi_set_status(int iStat, const char *zStat){
  zReplyStatus = mprintf("%s", zStat);
  zReplyStatus = fossil_strdup(zStat);
  iReplyStatus = iStat;
}

/*
** Append text to the header of an HTTP reply
** Append text to the content header buffer.
*/
void cgi_append_header(const char *zLine){
  blob_append(&extraHeader, zLine, -1);
}
void cgi_printf_header(const char *zLine, ...){
  va_list ap;
  va_start(ap, zLine);
  blob_vappendf(&extraHeader, zLine, ap);
  va_end(ap);

}

/*
** Set a cookie.
** Set a cookie by queuing up the appropriate HTTP header output. If
** !g.isHTTP, this is a no-op.
**
** Zero lifetime implies a session cookie.
** Zero lifetime implies a session cookie. A negative one expires
** the cookie immediately.
*/
void cgi_set_cookie(
  const char *zName,    /* Name of the cookie */
  const char *zValue,   /* Value of the cookie.  Automatically escaped */
  const char *zPath,    /* Path cookie applies to.  NULL means "/" */
  int lifetime          /* Expiration of the cookie in seconds from now */
){
  char const *zSecure = "";
  if(!g.isHTTP) return /* e.g. JSON CLI mode, where g.zTop is not set */;
  else if( zPath==0 ){
  if( zPath==0 ) zPath = g.zTop;
  if( lifetime>0 ){
    zPath = g.zTop;
    if( zPath[0]==0 ) zPath = "/";
  }
  if( g.zBaseURL!=0 && fossil_strncmp(g.zBaseURL, "https:", 6)==0 ){
    zSecure = " secure;";
  }
  if( lifetime!=0 ){
    lifetime += (int)time(0);
    blob_appendf(&extraHeader,
       "Set-Cookie: %s=%t; Path=%s; expires=%z; Version=1\r\n",
        zName, zValue, zPath, cgi_rfc822_datestamp(lifetime));
       "Set-Cookie: %s=%t; Path=%s; max-age=%d; HttpOnly; %s\r\n",
       zName, lifetime>0 ? zValue : "null", zPath, lifetime, zSecure);
  }else{
    blob_appendf(&extraHeader,
       "Set-Cookie: %s=%t; Path=%s; Version=1\r\n",
       zName, zValue, zPath);
       "Set-Cookie: %s=%t; Path=%s; HttpOnly; %s\r\n",
       zName, zValue, zPath, zSecure);
  }
}

#if 0

/*
** Add an ETag header line
** Return true if the response should be sent with Content-Encoding: gzip.
*/
static char *cgi_add_etag(char *zTxt, int nLen){
  MD5Context ctx;
  unsigned char digest[16];
  int i, j;
  char zETag[64];

  MD5Init(&ctx);
static int is_gzippable(void){
  if( g.fNoHttpCompress ) return 0;
  if( strstr(PD("HTTP_ACCEPT_ENCODING", ""), "gzip")==0 ) return 0;
  /* Maintenance note: this oddball structure is intended to make
  ** adding new mimetypes to this list less of a performance hit than
  ** doing a strcmp/glob over a growing set of compressible types. */
  switch(zContentType ? *zContentType : 0){
  MD5Update(&ctx,zTxt,nLen);
  MD5Final(digest,&ctx);
  for(j=i=0; i<16; i++,j+=2){
    bprintf(&zETag[j],sizeof(zETag)-j,"%02x",(int)digest[i]);
    case (int)'a':
  }
  blob_appendf(&extraHeader, "ETag: %s\r\n", zETag);
  return strdup(zETag);
}

/*
      if(0==fossil_strncmp("application/",zContentType,12)){
        const char * z = &zContentType[12];
        switch(*z){
** Do some cache control stuff. First, we generate an ETag and include it in
** the response headers. Second, we do whatever is necessary to determine if
** the request was asking about caching and whether we need to send back the
** response body. If we shouldn't send a body, return non-zero.
          case (int)'j':
            return fossil_strcmp("javascript", z)==0
                || fossil_strcmp("json", z)==0;
          case (int)'w': return fossil_strcmp("wasm", z)==0;
**
** Currently, we just check the ETag against any If-None-Match header.
**
** FIXME: In some cases (attachments, file contents) we could check
** If-Modified-Since headers and always include Last-Modified in responses.
*/
static int check_cache_control(void){
          case (int)'x':
  /* FIXME: there's some gotchas wth cookies and some headers. */
  char *zETag = cgi_add_etag(blob_buffer(&cgiContent),blob_size(&cgiContent));
  char *zMatch = P("HTTP_IF_NONE_MATCH");

            return fossil_strcmp("x-tcl", z)==0
  if( zETag!=0 && zMatch!=0 ) {
    char *zBuf = strdup(zMatch);
    if( zBuf!=0 ){
      char *zTok = 0;
      char *zPos;
      for( zTok = strtok_r(zBuf, ",\"",&zPos);
           zTok && strcasecmp(zTok,zETag);
                || fossil_strcmp("x-tar", z)==0;
           zTok =  strtok_r(0, ",\"",&zPos)){}
      free(zBuf);
      if(zTok) return 1;
    }
  }
  
          default:
            return sqlite3_strglob("*xml", z)==0;
        }
      }
      break;
    case (int)'i':
      return fossil_strcmp(zContentType, "image/svg+xml")==0
        || fossil_strcmp(zContentType, "image/vnd.microsoft.icon")==0;
    case (int)'t':
      return fossil_strncmp(zContentType, "text/", 5)==0;
  }
  return 0;
}


/*
** The following routines read or write content from/to the wire for
** an HTTP request.  Depending on settings the content might be coming
** from or going to a socket, or a file, or it might come from or go
** to an SSL decoder/encoder.
*/
/*
** Works like fgets():
**
** Read a single line of input into s[].  Ensure that s[] is zero-terminated.
** The s[] buffer is size bytes and so at most size-1 bytes will be read.
**
** Return a pointer to s[] on success, or NULL at end-of-input.
*/
static char *cgi_fgets(char *s, int size){
  if( !g.httpUseSSL ){
    return fgets(s, size, g.httpIn);
  }
#ifdef FOSSIL_ENABLE_SSL
  return ssl_gets(g.httpSSLConn, s, size);
#else
  fossil_fatal("SSL not available");
#endif

}

/* Works like fread():
**
** Read as many as bytes of content as we can, up to a maximum of nmemb
** bytes.  Return the number of bytes read.  Return 0 if there is no
** further input or if an I/O error occurs.
*/
size_t cgi_fread(void *ptr, size_t nmemb){
  if( !g.httpUseSSL ){
    return fread(ptr, 1, nmemb, g.httpIn);
  }
#ifdef FOSSIL_ENABLE_SSL
  return ssl_read_server(g.httpSSLConn, ptr, nmemb, 1);
#else
  fossil_fatal("SSL not available");
#endif
}

/* Works like feof():
**
** Return true if end-of-input has been reached.
*/
int cgi_feof(void){
  if( !g.httpUseSSL ){
    return feof(g.httpIn);
  }
#ifdef FOSSIL_ENABLE_SSL
  return ssl_eof(g.httpSSLConn);
#else
  return 1;
#endif
}

/* Works like fwrite():
**
** Try to output nmemb bytes of content.  Return the number of
** bytes actually written.
*/
static size_t cgi_fwrite(void *ptr, size_t nmemb){
  if( !g.httpUseSSL ){
    return fwrite(ptr, 1, nmemb, g.httpOut);
  }
#ifdef FOSSIL_ENABLE_SSL
  return ssl_write_server(g.httpSSLConn, ptr, nmemb);
#else
  fossil_fatal("SSL not available");
#endif
}

/* Works like fflush():
**
** Make sure I/O has completed.
*/
static void cgi_fflush(void){
  if( !g.httpUseSSL ){
    fflush(g.httpOut);
  }
}

/*
** Given a Content-Type value, returns a string suitable for appending
** to the Content-Type header for adding (or not) the "; charset=..."
** part. It returns an empty string for most types or if zContentType
** is NULL.
**
** See forum post f60dece061c364d1 for the discussions which lead to
** this. Previously we always appended the charset, but WASM loaders
** are pedantic and refuse to load any responses which have a
** charset. Also, adding a charset is not strictly appropriate for
** most types (and not required for many others which may ostensibly
** benefit from one, as detailed in that forum post).
*/
static const char * content_type_charset(const char *zContentType){
  if(0==fossil_strncmp(zContentType,"text/",5)){
    return "; charset=utf-8";
  }
  return "";
}
** Do a normal HTTP reply

/*
** Generate the reply to a web request.  The output might be an
** full HTTP response, or a CGI response, depending on how things have
** be set up.
**
** The reply consists of a response header (an HTTP or CGI response header)
** followed by the concatenation of the content header and content body.
*/
void cgi_reply(void){
  Blob hdr = BLOB_INITIALIZER;
  int total_size;
  if( iReplyStatus<=0 ){
    iReplyStatus = 200;
    zReplyStatus = "OK";
  }

  if( g.fullHttpReply ){
#if 0
  if( iReplyStatus==200 && check_cache_control() ) {
    if( rangeEnd>0
     && iReplyStatus==200
    /* change the status to "unchanged" and we can skip sending the
    ** actual response body. Obviously we only do this when we _have_ a
    ** body (code 200).
     && fossil_strcmp(P("REQUEST_METHOD"),"GET")==0
    ){
    */
    iReplyStatus = 304;
    zReplyStatus = "Not Modified";
  }
      iReplyStatus = 206;
      zReplyStatus = "Partial Content";
    }
#endif

  if( g.fullHttpReply ){
    fprintf(g.httpOut, "HTTP/1.0 %d %s\r\n", iReplyStatus, zReplyStatus);
    fprintf(g.httpOut, "Date: %s\r\n", cgi_rfc822_datestamp(time(0)));
    fprintf(g.httpOut, "Connection: close\r\n");
    blob_appendf(&hdr, "HTTP/1.0 %d %s\r\n", iReplyStatus, zReplyStatus);
    blob_appendf(&hdr, "Date: %s\r\n", cgi_rfc822_datestamp(time(0)));
    blob_appendf(&hdr, "Connection: close\r\n");
    blob_appendf(&hdr, "X-UA-Compatible: IE=edge\r\n");
  }else{
    assert( rangeEnd==0 );
    fprintf(g.httpOut, "Status: %d %s\r\n", iReplyStatus, zReplyStatus);
    blob_appendf(&hdr, "Status: %d %s\r\n", iReplyStatus, zReplyStatus);
  }
  if( etag_tag()[0]!=0
   && iReplyStatus==200
   && strcmp(zContentType,"text/html")!=0
  ){
    /* Do not cache HTML replies as those will have been generated and
    ** will likely, therefore, contains a nonce and we want that nonce to
    ** be different every time. */
    blob_appendf(&hdr, "ETag: %s\r\n", etag_tag());
    blob_appendf(&hdr, "Cache-Control: max-age=%d\r\n", etag_maxage());
    if( etag_mtime()>0 ){
      blob_appendf(&hdr, "Last-Modified: %s\r\n",
              cgi_rfc822_datestamp(etag_mtime()));
    }
  }else if( g.isConst ){
    /* isConst means that the reply is guaranteed to be invariant, even
    ** after configuration changes and/or Fossil binary recompiles. */
    blob_appendf(&hdr, "Cache-Control: max-age=315360000, immutable\r\n");
  }else{
    blob_appendf(&hdr, "Cache-control: no-cache\r\n");
  }

  if( blob_size(&extraHeader)>0 ){
    fprintf(g.httpOut, "%s", blob_buffer(&extraHeader));
    blob_appendf(&hdr, "%s", blob_buffer(&extraHeader));
  }

  if( g.isConst ){
    /* constant means that the input URL will _never_ generate anything
    ** else. In the case of attachments, the contents won't change because
    ** an attempt to change them generates a new attachment number. In the
    ** case of most /getfile calls for specific versions, the only way the
    ** content changes is if someone breaks the SCM. And if that happens, a
  /* Add headers to turn on useful security options in browsers. */
  blob_appendf(&hdr, "X-Frame-Options: SAMEORIGIN\r\n");
  /* The previous stops fossil pages appearing in frames or iframes, preventing
  ** click-jacking attacks on supporting browsers.
  **
  ** Other good headers would be
  **   Strict-Transport-Security: max-age=62208000
  ** if we're using https. However, this would break sites which serve different
  ** content on http and https protocols. Also,
    ** stale cache is the least of the problem. So we provide an Expires
    ** header set to a reasonable period (default: one week).
    */
  **   X-Content-Security-Policy: allow 'self'
  ** would help mitigate some XSS and data injection attacks, but will break
  ** deliberate inclusion of external resources, such as JavaScript syntax
  ** highlighter scripts.
  **
  ** These headers are probably best added by the web server hosting fossil as
  ** a CGI script.
  */
    /*time_t expires = time(0) + atoi(db_config("constant_expires","604800"));*/
    time_t expires = time(0) + 604800;
    fprintf(g.httpOut, "Expires: %s\r\n", cgi_rfc822_datestamp(expires));
  }else{
    fprintf(g.httpOut, "Cache-control: no-cache, no-store\r\n");
  }

  /* Content intended for logged in users should only be cached in

  if( iReplyStatus!=304 ) {
    blob_appendf(&hdr, "Content-Type: %s%s\r\n", zContentType,
  ** the browser, not some shared location.
  */
  fprintf(g.httpOut, "Content-Type: %s; charset=utf-8\r\n", zContentType);
  if( strcmp(zContentType,"application/x-fossil")==0 ){
    cgi_combine_header_and_body();
    blob_compress(&cgiContent[0], &cgiContent[0]);
  }
                 content_type_charset(zContentType));
    if( fossil_strcmp(zContentType,"application/x-fossil")==0 ){
      cgi_combine_header_and_body();
      blob_compress(&cgiContent[0], &cgiContent[0]);
    }

  if( iReplyStatus != 304 ) {
    if( is_gzippable() && iReplyStatus!=206 ){
      int i;
      gzip_begin(0);
      for( i=0; i<2; i++ ){
        int size = blob_size(&cgiContent[i]);
        if( size>0 ) gzip_step(blob_buffer(&cgiContent[i]), size);
        blob_reset(&cgiContent[i]);
      }
      gzip_finish(&cgiContent[0]);
      blob_appendf(&hdr, "Content-Encoding: gzip\r\n");
      blob_appendf(&hdr, "Vary: Accept-Encoding\r\n");
    }
    total_size = blob_size(&cgiContent[0]) + blob_size(&cgiContent[1]);
    if( iReplyStatus==206 ){
      blob_appendf(&hdr, "Content-Range: bytes %d-%d/%d\r\n",
              rangeStart, rangeEnd-1, total_size);
      total_size = rangeEnd - rangeStart;
    }
    fprintf(g.httpOut, "Content-Length: %d\r\n", total_size);
    blob_appendf(&hdr, "Content-Length: %d\r\n", total_size);
  }else{
    total_size = 0;
  }
  fprintf(g.httpOut, "\r\n");
  if( total_size>0 && iReplyStatus != 304 ){
  blob_appendf(&hdr, "\r\n");
  cgi_fwrite(blob_buffer(&hdr), blob_size(&hdr));
  blob_reset(&hdr);
  if( total_size>0
   && iReplyStatus!=304
   && fossil_strcmp(P("REQUEST_METHOD"),"HEAD")!=0
  ){
    int i, size;
    for(i=0; i<2; i++){
      size = blob_size(&cgiContent[i]);
      if( size>0 ){
        fwrite(blob_buffer(&cgiContent[i]), 1, size, g.httpOut);
      if( size<=rangeStart ){
        rangeStart -= size;
      }else{
        int n = size - rangeStart;
        if( n>total_size ){
          n = total_size;
        }
        cgi_fwrite(blob_buffer(&cgiContent[i])+rangeStart, n);
        rangeStart = 0;
        total_size -= n;
      }
    }
  }
  cgi_fflush();
  CGIDEBUG(("DONE\n"));
  CGIDEBUG(("-------- END cgi ---------\n"));

  /* After the webpage has been sent, do any useful background
  ** processing.
  */
  g.cgiOutput = 2;
  if( g.db!=0 && iReplyStatus==200 ){
    backoffice_check_if_needed();
  }
}

/*
** Generate an HTTP or CGI redirect response that causes a redirect
** Do a redirect request to the URL given in the argument.
** to the URL given in the argument.
**
** The URL must be relative to the base of the fossil server.
*/
NORETURN void cgi_redirect_with_status(
void cgi_redirect(const char *zURL){
  const char *zURL,
  int iStat,
  const char *zStat
){
  char *zLocation;
  CGIDEBUG(("redirect to %s\n", zURL));
  if( fossil_strncmp(zURL,"http:",5)==0
  if( strncmp(zURL,"http:",5)==0 || strncmp(zURL,"https:",6)==0 || *zURL=='/' ){
      || fossil_strncmp(zURL,"https:",6)==0 ){
    zLocation = mprintf("Location: %s\r\n", zURL);
  }else if( *zURL=='/' ){
    int n1 = (int)strlen(g.zBaseURL);
    int n2 = (int)strlen(g.zTop);
    if( g.zBaseURL[n1-1]=='/' ) zURL++;
    zLocation = mprintf("Location: %.*s%s\r\n", n1-n2, g.zBaseURL, zURL);
  }else{
    zLocation = mprintf("Location: %s/%s\r\n", g.zBaseURL, zURL);
  }
  cgi_append_header(zLocation);
  cgi_reset_content();
  cgi_printf("<html>\n<p>Redirect to %h</p>\n</html>\n", zURL);
  cgi_set_status(302, "Moved Temporarily");
  cgi_printf("<html>\n<p>Redirect to %h</p>\n</html>\n", zLocation);
  cgi_set_status(iStat, zStat);
  free(zLocation);
  cgi_reply();
  exit(0);
  fossil_exit(0);
}
NORETURN void cgi_redirect(const char *zURL){
  cgi_redirect_with_status(zURL, 302, "Moved Temporarily");
}
NORETURN void cgi_redirect_with_method(const char *zURL){
  cgi_redirect_with_status(zURL, 307, "Temporary Redirect");
}
void cgi_redirectf(const char *zFormat, ...){
NORETURN void cgi_redirectf(const char *zFormat, ...){
  va_list ap;
  va_start(ap, zFormat);
  cgi_redirect(vmprintf(zFormat, ap));
  va_end(ap);
}

/*
** Add a "Content-disposition: attachment; filename=%s" header to the reply.
*/
void cgi_content_disposition_filename(const char *zFilename){
  char *z;
  int i, n;

           /*  0123456789 123456789 123456789 123456789 123456*/
  z = mprintf("Content-Disposition: attachment; filename=\"%s\";\r\n",
                    file_tail(zFilename));
  n = (int)strlen(z);
  for(i=43; i<n-4; i++){
    char c = z[i];
    if( fossil_isalnum(c) ) continue;
    if( c=='.' || c=='-' || c=='/' ) continue;
    z[i] = '_';
  }
  cgi_append_header(z);
  fossil_free(z);
}

/*
** Return the URL for the caller.  This is obtained from either the
** "referer" CGI parameter, if it exists, or the HTTP_REFERER HTTP parameter.
** If neither exist, return zDefault.
*/
const char *cgi_referer(const char *zDefault){
  const char *zRef = P("referer");
  if( zRef==0 ){
    zRef = P("HTTP_REFERER");
    if( zRef==0 ) zRef = zDefault;
  }
  return zRef;
}


/*
** Return true if the current request is coming from the same origin.
*/
int cgi_same_origin(void){
  const char *zRef;
  int nBase;
  if( g.zBaseURL==0 ) return 0;
  zRef = P("HTTP_REFERER");
  if( zRef==0 ) return 0;
  nBase = (int)strlen(g.zBaseURL);
  if( fossil_strncmp(g.zBaseURL,zRef,nBase)!=0 ) return 0;
  if( zRef[nBase]!=0 && zRef[nBase]!='/' ) return 0;
  return 1;
}

/*
** Return true if the current CGI request is a POST request
*/
static int cgi_is_post_request(void){
  const char *zMethod = P("REQUEST_METHOD");
  if( zMethod==0 ) return 0;
  if( strcmp(zMethod,"POST")!=0 ) return 0;
  return  1;
}

/*
** Return true if the current request appears to be safe from a
** Cross-Site Request Forgery (CSRF) attack.  The level of checking
** is determined by the parameter.  The higher the number, the more
** secure we are:
**
**    0:     Request must come from the same origin
**    1:     Same origin and must be a POST request
**    2:     All of the above plus must have a valid CSRF token
**
** Results are cached in the g.okCsrf variable.  The g.okCsrf value
** has meaning as follows:
**
**    -1:   Not a secure request
**     0:   Status unknown
**     1:   Request comes from the same origin
**     2:   (1) plus it is a POST request
**     3:   (2) plus there is a valid "csrf" token in the request
*/
int cgi_csrf_safe(int securityLevel){
  if( g.okCsrf<0 ) return 0;
  if( g.okCsrf==0 ){
    if( !cgi_same_origin() ){
      g.okCsrf = -1;
    }else{
      g.okCsrf = 1;
      if( cgi_is_post_request() ){
        g.okCsrf = 2;
        if( fossil_strcmp(P("csrf"), g.zCsrfToken)==0 ){
          g.okCsrf = 3;
        }
      }
    }
  }
  return g.okCsrf >= (securityLevel+1);
}

/*
** Verify that CSRF defenses are maximal - that the request comes from
** the same origin, that it is a POST request, and that there is a valid
** "csrf" token.  If this is not the case, fail immediately.
*/
void cgi_csrf_verify(void){
  if( !cgi_csrf_safe(2) ){
    fossil_fatal("Cross-site Request Forgery detected");
  }
}

/*
** Information about all query parameters and cookies are stored
** in these variables.
** Information about all query parameters, post parameter, cookies and
** CGI environment variables are stored in a hash table as follows:
*/
static int nAllocQP = 0; /* Space allocated for aParamQP[] */
static int nUsedQP = 0;  /* Space actually used in aParamQP[] */
static int sortQP = 0;   /* True if aParamQP[] needs sorting */
static int seqQP = 0;    /* Sequence numbers */
static struct QParam {   /* One entry for each query parameter or cookie */
  const char *zName;        /* Parameter or cookie name */
  const char *zValue;       /* Value of the query parameter or cookie */
  int seq;                  /* Order of insertion */
  char isQP;                /* True for query parameters */
  char cTag;                /* Tag on query parameters */
  char isFetched;           /* 1 if the var is requested via P/PD() */
} *aParamQP;             /* An array of all parameters and cookies */

/*
** Add another query parameter or cookie to the parameter set.
** zName is the name of the query parameter or cookie and zValue
** is its fully decoded value.
**
** zName and zValue are not copied and must not change or be
** deallocated after this routine returns.
*/
void cgi_set_parameter_nocopy(const char *zName, const char *zValue){
void cgi_set_parameter_nocopy(const char *zName, const char *zValue, int isQP){
  if( nAllocQP<=nUsedQP ){
    nAllocQP = nAllocQP*2 + 10;
    if( nAllocQP>1000 ){
      /* Prevent a DOS service attack against the framework */
      fossil_fatal("Too many query parameters");
    }
    aParamQP = realloc( aParamQP, nAllocQP*sizeof(aParamQP[0]) );
    aParamQP = fossil_realloc( aParamQP, nAllocQP*sizeof(aParamQP[0]) );
    if( aParamQP==0 ) exit(1);
  }
  aParamQP[nUsedQP].zName = zName;
  aParamQP[nUsedQP].zValue = zValue;
  if( g.fHttpTrace ){
    fprintf(stderr, "# cgi: %s = [%s]\n", zName, zValue);
  }
  aParamQP[nUsedQP].seq = seqQP++;
  aParamQP[nUsedQP].isQP = isQP;
  aParamQP[nUsedQP].cTag = 0;
  aParamQP[nUsedQP].isFetched = 0;
  nUsedQP++;
  sortQP = 1;
}

/*
** Add another query parameter or cookie to the parameter set.
** zName is the name of the query parameter or cookie and zValue
** is its fully decoded value.  zName will be modified to be an
** all lowercase string.
**
** zName and zValue are not copied and must not change or be
** deallocated after this routine returns.  This routine changes
** all ASCII alphabetic characters in zName to lower case.  The
** caller must not change them back.
*/
void cgi_set_parameter_nocopy_tolower(
  char *zName,
  const char *zValue,
  int isQP
){
  int i;
  for(i=0; zName[i]; i++){ zName[i] = fossil_tolower(zName[i]); }
  cgi_set_parameter_nocopy(zName, zValue, isQP);
}

/*
** Add another query parameter or cookie to the parameter set.
** zName is the name of the query parameter or cookie and zValue
** is its fully decoded value.
**
** Copies are made of both the zName and zValue parameters.
*/
void cgi_set_parameter(const char *zName, const char *zValue){
  cgi_set_parameter_nocopy(mprintf("%s",zName), mprintf("%s",zValue));
  cgi_set_parameter_nocopy(fossil_strdup(zName),fossil_strdup(zValue), 0);
}
void cgi_set_query_parameter(const char *zName, const char *zValue){
  cgi_set_parameter_nocopy(fossil_strdup(zName),fossil_strdup(zValue), 1);
}

/*
** Replace a parameter with a new value.
*/
void cgi_replace_parameter(const char *zName, const char *zValue){
  int i;
  for(i=0; i<nUsedQP; i++){
    if( strcmp(aParamQP[i].zName,zName)==0 ){
    if( fossil_strcmp(aParamQP[i].zName,zName)==0 ){
      aParamQP[i].zValue = zValue;
      return;
    }
  }
  cgi_set_parameter_nocopy(zName, zValue);
  cgi_set_parameter_nocopy(zName, zValue, 0);
}
void cgi_replace_query_parameter(const char *zName, const char *zValue){
  int i;
  for(i=0; i<nUsedQP; i++){
    if( fossil_strcmp(aParamQP[i].zName,zName)==0 ){
      aParamQP[i].zValue = zValue;
      assert( aParamQP[i].isQP );
      return;
    }
  }
  cgi_set_parameter_nocopy(zName, zValue, 1);
}
void cgi_replace_query_parameter_tolower(char *zName, const char *zValue){
  int i;
  for(i=0; zName[i]; i++){ zName[i] = fossil_tolower(zName[i]); }
  cgi_replace_query_parameter(zName, zValue);
}

/*
** Delete a parameter.
*/
void cgi_delete_parameter(const char *zName){
  int i;
  for(i=0; i<nUsedQP; i++){
    if( fossil_strcmp(aParamQP[i].zName,zName)==0 ){
      --nUsedQP;
      if( i<nUsedQP ){
        memmove(aParamQP+i, aParamQP+i+1, sizeof(*aParamQP)*(nUsedQP-i));
      }
      return;
    }
  }
}
void cgi_delete_query_parameter(const char *zName){
  int i;
  for(i=0; i<nUsedQP; i++){
    if( fossil_strcmp(aParamQP[i].zName,zName)==0 ){
      assert( aParamQP[i].isQP );
      --nUsedQP;
      if( i<nUsedQP ){
        memmove(aParamQP+i, aParamQP+i+1, sizeof(*aParamQP)*(nUsedQP-i));
      }
      return;
    }
  }
}

/*
** Return the number of query parameters.  Cookies and environment variables
** do not count.  Also, do not count the special QP "name".
*/
int cgi_qp_count(void){
  int cnt = 0;
  int i;
  for(i=0; i<nUsedQP; i++){
    if( aParamQP[i].isQP && fossil_strcmp(aParamQP[i].zName,"name")!=0 ) cnt++;
  }
  return cnt;
}

/*
** Add a query parameter.  The zName portion is fixed but a copy
** must be made of zValue.
** Add an environment varaible value to the parameter set.  The zName
** portion is fixed but a copy is be made of zValue.
*/
void cgi_setenv(const char *zName, const char *zValue){
  cgi_set_parameter_nocopy(zName, mprintf("%s",zValue));
  cgi_set_parameter_nocopy(zName, fossil_strdup(zValue), 0);
}
 

/*
** Add a list of query parameters or cookies to the parameter set.
**
** Each parameter is of the form NAME=VALUE.  Both the NAME and the
** VALUE may be url-encoded ("+" for space, "%HH" for other special
** characters).  But this routine assumes that NAME contains no
** special character and therefore does not decode it.
**
** If NAME begins with another other than a lower-case letter then
** the entire NAME=VALUE term is ignored.  Hence:
**
**      *  cookies and query parameters that have uppercase names
**         are ignored.
**
**      *  it is impossible for a cookie or query parameter to
**         override the value of an environment variable since
**         environment variables always have uppercase names.
**
** 2018-03-29:  Also ignore the entry if NAME that contains any characters
** other than [a-zA-Z0-9_].  There are no known exploits involving unusual
** names that contain characters outside that set, but it never hurts to
** be extra cautious when sanitizing inputs.
**
** Parameters are separated by the "terminator" character.  Whitespace
** before the NAME is ignored.
**
** The input string "z" is modified but no copies is made.  "z"
** should not be deallocated or changed again after this routine
** returns or it will corrupt the parameter table.
*/
static void add_param_list(char *z, int terminator){
  int isQP = terminator=='&';
  while( *z ){
    char *zName;
    char *zValue;
    while( isspace(*z) ){ z++; }
    while( fossil_isspace(*z) ){ z++; }
    zName = z;
    while( *z && *z!='=' && *z!=terminator ){ z++; }
    if( *z=='=' ){
      *z = 0;
      z++;
      zValue = z;
      while( *z && *z!=terminator ){ z++; }
      if( *z ){
        *z = 0;
        z++;
      }
      dehttpize(zValue);
    }else{
      if( *z ){ *z++ = 0; }
      zValue = "";
    }
    if( zName[0] && fossil_no_strange_characters(zName+1) ){
    if( islower(zName[0]) ){
      cgi_set_parameter_nocopy(zName, zValue);
    }
      if( fossil_islower(zName[0]) ){
        cgi_set_parameter_nocopy(zName, zValue, isQP);
      }else if( fossil_isupper(zName[0]) ){
        cgi_set_parameter_nocopy_tolower(zName, zValue, isQP);
      }
    }
#ifdef FOSSIL_ENABLE_JSON
    json_setenv( zName, cson_value_new_string(zValue,strlen(zValue)) );
#endif /* FOSSIL_ENABLE_JSON */
  }
}

/*
** *pz is a string that consists of multiple lines of text.  This
** routine finds the end of the current line of text and converts
** the "\n" or "\r\n" that ends that line into a "\000".  It then
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+




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-
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  *pz = &z[i];
  *pLen -= i;
  return z;
}

/*
** The input *pz points to content that is terminated by a "\r\n"
** followed by the boundry marker zBoundry.  An extra "--" may or
** may not be appended to the boundry marker.  There are *pLen characters
** followed by the boundary marker zBoundary.  An extra "--" may or
** may not be appended to the boundary marker.  There are *pLen characters
** in *pz.
**
** This routine adds a "\000" to the end of the content (overwriting
** the "\r\n") and returns a pointer to the content.  The *pz input
** is adjusted to point to the first line following the boundry.
** is adjusted to point to the first line following the boundary.
** The length of the content is stored in *pnContent.
*/
static char *get_bounded_content(
  char **pz,         /* Content taken from here */
  int *pLen,         /* Number of bytes of data in (*pz)[] */
  char *zBoundry,    /* Boundry text marking the end of content */
  char *zBoundary,    /* Boundary text marking the end of content */
  int *pnContent     /* Write the size of the content here */
){
  char *z = *pz;
  int len = *pLen;
  int i;
  int nBoundry = strlen(zBoundry);
  int nBoundary = strlen(zBoundary);
  *pnContent = len;
  for(i=0; i<len; i++){
    if( z[i]=='\n' && strncmp(zBoundry, &z[i+1], nBoundry)==0 ){
    if( z[i]=='\n' && fossil_strncmp(zBoundary, &z[i+1],
                                     nBoundary)==0 ){
      if( i>0 && z[i-1]=='\r' ) i--;
      z[i] = 0;
      *pnContent = i;
      i += nBoundry;
      i += nBoundary;
      break;
    }
  }
  *pz = &z[i];
  get_line_from_string(pz, pLen);
  return z;      
  return z;
}

/*
** Tokenize a line of text into as many as nArg tokens.  Make
** azArg[] point to the start of each token.
**
** Tokens consist of space or semi-colon delimited words or
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** '\000' characters are inserted in z[] at the end of each token.
** This routine returns the total number of tokens on the line, 6
** in the example above.
*/
static int tokenize_line(char *z, int mxArg, char **azArg){
  int i = 0;
  while( *z ){
    while( isspace(*z) || *z==';' ){ z++; }
    while( fossil_isspace(*z) || *z==';' ){ z++; }
    if( *z=='"' && z[1] ){
      *z = 0;
      z++;
      if( i<mxArg-1 ){ azArg[i++] = z; }
      while( *z && *z!='"' ){ z++; }
      if( *z==0 ) break;
      *z = 0;
      z++;
    }else{
      if( i<mxArg-1 ){ azArg[i++] = z; }
      while( *z && !isspace(*z) && *z!=';' && *z!='"' ){ z++; }
      while( *z && !fossil_isspace(*z) && *z!=';' && *z!='"' ){ z++; }
      if( *z && *z!='"' ){
        *z = 0;
        z++;
      }
    }
  }
  azArg[i] = 0;
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+

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+







** not copied.  The calling function must not deallocate or modify
** "z" after this routine finishes or it could corrupt the parameter
** table.
*/
static void process_multipart_form_data(char *z, int len){
  char *zLine;
  int nArg, i;
  char *zBoundry;
  char *zBoundary;
  char *zValue;
  char *zName = 0;
  int showBytes = 0;
  char *azArg[50];

  zBoundry = get_line_from_string(&z, &len);
  if( zBoundry==0 ) return;
  zBoundary = get_line_from_string(&z, &len);
  if( zBoundary==0 ) return;
  while( (zLine = get_line_from_string(&z, &len))!=0 ){
    if( zLine[0]==0 ){
      int nContent = 0;
      zValue = get_bounded_content(&z, &len, zBoundry, &nContent);
      if( zName && zValue && islower(zName[0]) ){
        cgi_set_parameter_nocopy(zName, zValue);
        if( showBytes ){
          cgi_set_parameter_nocopy(mprintf("%s:bytes", zName),
               mprintf("%d",nContent));
      zValue = get_bounded_content(&z, &len, zBoundary, &nContent);
      if( zName && zValue ){
        if( fossil_islower(zName[0]) ){
          cgi_set_parameter_nocopy(zName, zValue, 1);
          if( showBytes ){
            cgi_set_parameter_nocopy(mprintf("%s:bytes", zName),
                 mprintf("%d",nContent), 1);
          }
        }else if( fossil_isupper(zName[0]) ){
          cgi_set_parameter_nocopy_tolower(zName, zValue, 1);
          if( showBytes ){
            cgi_set_parameter_nocopy_tolower(mprintf("%s:bytes", zName),
                 mprintf("%d",nContent), 1);
          }
        }
      }
      zName = 0;
      showBytes = 0;
    }else{
      nArg = tokenize_line(zLine, sizeof(azArg)/sizeof(azArg[0]), azArg);
      nArg = tokenize_line(zLine, count(azArg), azArg);
      for(i=0; i<nArg; i++){
        int c = tolower(azArg[i][0]);
        int c = fossil_tolower(azArg[i][0]);
        int n = strlen(azArg[i]);
        if( c=='c' && sqlite3_strnicmp(azArg[i],"content-disposition:",n)==0 ){
          i++;
        }else if( c=='n' && sqlite3_strnicmp(azArg[i],"name=",n)==0 ){
          zName = azArg[++i];
        }else if( c=='f' && sqlite3_strnicmp(azArg[i],"filename=",n)==0 ){
          char *z = azArg[++i];
          if( zName && z && islower(zName[0]) ){
            cgi_set_parameter_nocopy(mprintf("%s:filename",zName), z);
          if( zName && z ){
            if( fossil_islower(zName[0]) ){
              cgi_set_parameter_nocopy(mprintf("%s:filename",zName), z, 1);
            }else if( fossil_isupper(zName[0]) ){
              cgi_set_parameter_nocopy_tolower(mprintf("%s:filename",zName),
                                               z, 1);
            }
          }
          showBytes = 1;
        }else if( c=='c' && sqlite3_strnicmp(azArg[i],"content-type:",n)==0 ){
          char *z = azArg[++i];
          if( zName && z && islower(zName[0]) ){
            cgi_set_parameter_nocopy(mprintf("%s:mimetype",zName), z);
          }
        }
      }
    }
  }        
          if( zName && z ){
            if( fossil_islower(zName[0]) ){
              cgi_set_parameter_nocopy(mprintf("%s:mimetype",zName), z, 1);
            }else if( fossil_isupper(zName[0]) ){
              cgi_set_parameter_nocopy_tolower(mprintf("%s:mimetype",zName),
                                               z, 1);
            }
          }
        }
      }
    }
  }
}


#ifdef FOSSIL_ENABLE_JSON
/*
** Reads a JSON object from the given blob, which is assumed to have
** been populated by the caller from stdin, the SSL API, or a file, as
** appropriate for the particular use case. On success g.json.post is
** updated to hold the content. On error a FSL_JSON_E_INVALID_REQUEST
** response is output and fossil_exit() is called (in HTTP mode exit
** code 0 is used).
*/
void cgi_parse_POST_JSON( Blob * pIn ){
  cson_value * jv = NULL;
  cson_parse_info pinfo = cson_parse_info_empty;
  assert(g.json.gc.a && "json_bootstrap_early() was not called!");
  jv = cson_parse_Blob(pIn, &pinfo);
  if( jv==NULL ){
    goto invalidRequest;
  }else{
    json_gc_add( "POST.JSON", jv );
    g.json.post.v = jv;
    g.json.post.o = cson_value_get_object( jv );
    if( !g.json.post.o ){ /* we don't support non-Object (Array) requests */
      goto invalidRequest;
    }
  }
  return;
  invalidRequest:
  cgi_set_content_type(json_guess_content_type());
  if(0 != pinfo.errorCode){ /* fancy error message */
      char * msg = mprintf("JSON parse error at line %u, column %u, "
                           "byte offset %u: %s",
                           pinfo.line, pinfo.col, pinfo.length,
                           cson_rc_string(pinfo.errorCode));
      json_err( FSL_JSON_E_INVALID_REQUEST, msg, 1 );
      fossil_free(msg);
  }else if(jv && !g.json.post.o){
      json_err( FSL_JSON_E_INVALID_REQUEST,
                "Request envelope must be a JSON Object (not array).", 1 );
  }else{ /* generic error message */
      json_err( FSL_JSON_E_INVALID_REQUEST, NULL, 1 );
  }
  fossil_exit( g.isHTTP ? 0 : 1);
}
#endif /* FOSSIL_ENABLE_JSON */

/*
** Log HTTP traffic to a file.  Begin the log on first use.  Close the log
** when the argument is NULL.
*/
void cgi_trace(const char *z){
  static FILE *pLog = 0;
  if( g.fHttpTrace==0 ) return;
  if( z==0 ){
    if( pLog ) fclose(pLog);
    pLog = 0;
    return;
  }
  if( pLog==0 ){
    char zFile[50];
#if defined(_WIN32)
    unsigned r;
    sqlite3_randomness(sizeof(r), &r);
    sqlite3_snprintf(sizeof(zFile), zFile, "httplog-%08x.txt", r);
#else
    sqlite3_snprintf(sizeof(zFile), zFile, "httplog-%05d.txt", getpid());
#endif
    pLog = fossil_fopen(zFile, "wb");
    if( pLog ){
      fprintf(stderr, "# open log on %s\n", zFile);
    }else{
      fprintf(stderr, "# failed to open %s\n", zFile);
      return;
    }
  }
  fputs(z, pLog);
}

/* Forward declaration */
static NORETURN void malformed_request(const char *zMsg, ...);

/*
** Checks the QUERY_STRING environment variable, sets it up
** via add_param_list() and, if found, applies its "skin"
** setting. Returns 0 if no QUERY_STRING is set, 1 if it is,
** and 2 if it sets the skin (in which case the cookie may
** still need flushing by the page, via cookie_render()).
*/
int cgi_setup_query_string(void){
  int rc = 0;
  char * z = (char*)P("QUERY_STRING");
  if( z ){
    ++rc;
    z = fossil_strdup(z);
    add_param_list(z, '&');
    z = (char*)P("skin");
    if( z ){
      char *zErr = skin_use_alternative(z, 2, SKIN_FROM_QPARAM);
      ++rc;
      if( !zErr && P("once")==0 ){
        cookie_write_parameter("skin","skin",z);
        /* Per /chat discussion, passing ?skin=... without "once"
        ** implies the "udc" argument, so we force that into the
        ** environment here. */
        cgi_set_parameter_nocopy("udc", "1", 1);
      }
      fossil_free(zErr);
    }
  }
  return rc;
}

/*
** Initialize the query parameter database.  Information is pulled from
** the QUERY_STRING environment variable (if it exists), from standard
** input if there is POST data, and from HTTP_COOKIE.
**
** REQUEST_URI, PATH_INFO, and SCRIPT_NAME are related as follows:
**
**      REQUEST_URI == SCRIPT_NAME + PATH_INFO
**
** Or if QUERY_STRING is not empty:
**
**      REQUEST_URI == SCRIPT_NAME + PATH_INFO + '?' + QUERY_STRING
**
** Where "+" means concatenate.  Fossil requires SCRIPT_NAME.  If
** REQUEST_URI is provided but PATH_INFO is not, then PATH_INFO is
** computed from REQUEST_URI and SCRIPT_NAME.  If PATH_INFO is provided
** but REQUEST_URI is not, then compute REQUEST_URI from PATH_INFO and
** SCRIPT_NAME.  If neither REQUEST_URI nor PATH_INFO are provided, then
** assume that PATH_INFO is an empty string and set REQUEST_URI equal
** to PATH_INFO.
**
** Sometimes PATH_INFO is missing and SCRIPT_NAME is not a prefix of
** REQUEST_URI.  (See https://fossil-scm.org/forum/forumpost/049e8650ed)
** In that case, truncate SCRIPT_NAME so that it is a proper prefix
** of REQUEST_URI.
**
** SCGI typically omits PATH_INFO.  CGI sometimes omits REQUEST_URI and
** PATH_INFO when it is empty.
**
** CGI Parameter quick reference:
**
**                                   REQUEST_URI
**                           _____________|________________
**                          /                              \
**    https://fossil-scm.org/forum/info/12736b30c072551a?t=c
**    \___/   \____________/\____/\____________________/ \_/
**      |           |          |             |            |
**      |       HTTP_HOST      |        PATH_INFO     QUERY_STRING
**      |                      |
**    REQUEST_SCHEMA         SCRIPT_NAME
**
*/
void cgi_init(void){
  char *z;
  const char *zType;
  char *zSemi;
  int len;
  const char *zRequestUri = cgi_parameter("REQUEST_URI",0);
  const char *zScriptName = cgi_parameter("SCRIPT_NAME",0);
  const char *zPathInfo = cgi_parameter("PATH_INFO",0);
  const char *zContentLength = 0;
#ifdef _WIN32
  const char *zServerSoftware = cgi_parameter("SERVER_SOFTWARE",0);
#endif

#ifdef FOSSIL_ENABLE_JSON
  const int noJson = P("no_json")!=0;
#endif
  g.isHTTP = 1;
  cgi_destination(CGI_BODY);
  z = (char*)P("QUERY_STRING");
  if( z ){

  /* We must have SCRIPT_NAME. If the web server did not supply it, try
  ** to compute it from REQUEST_URI and PATH_INFO. */
  if( zScriptName==0 ){
    if( zRequestUri==0 || zPathInfo==0 ){
      malformed_request("missing SCRIPT_NAME");  /* Does not return */
    }
    z = strstr(zRequestUri,zPathInfo);
    if( z==0 ){
    z = mprintf("%s",z);
    add_param_list(z, '&');
  }

  z = (char*)P("REMOTE_ADDR");
  if( z ) g.zIpAddr = mprintf("%s", z);

      malformed_request("PATH_INFO not found in REQUEST_URI");
    }
    zScriptName = fossil_strndup(zRequestUri,(int)(z-zRequestUri));
    cgi_set_parameter("SCRIPT_NAME", zScriptName);
  }

#ifdef _WIN32
  /* The Microsoft IIS web server does not define REQUEST_URI, instead it uses
  ** PATH_INFO for virtually the same purpose.  Define REQUEST_URI the same as
  ** PATH_INFO and redefine PATH_INFO with SCRIPT_NAME removed from the
  ** beginning. */
  if( zServerSoftware && strstr(zServerSoftware, "Microsoft-IIS") ){
    int i, j;
    cgi_set_parameter("REQUEST_URI", zPathInfo);
    for(i=0; zPathInfo[i]==zScriptName[i] && zPathInfo[i]; i++){}
    for(j=i; zPathInfo[j] && zPathInfo[j]!='?'; j++){}
    zPathInfo = fossil_strndup(zPathInfo+i, j-i);
    cgi_replace_parameter("PATH_INFO", zPathInfo);
  }
  len = atoi(PD("CONTENT_LENGTH", "0"));
  g.zContentType = zType = P("CONTENT_TYPE");
  if( len>0 && zType ){
#endif
    blob_zero(&g.cgiIn);
    if( strcmp(zType,"application/x-www-form-urlencoded")==0 
         || strncmp(zType,"multipart/form-data",19)==0 ){
      z = malloc( len+1 );
      if( z==0 ) exit(1);
  if( zRequestUri==0 ){
    const char *z = zPathInfo;
    const char *zQS = cgi_parameter("QUERY_STRING",0);
    if( zPathInfo==0 ){
      malformed_request("missing PATH_INFO and/or REQUEST_URI");
    }
    if( z[0]=='/' ) z++;
      len = fread(z, 1, len, g.httpIn);
      z[len] = 0;
      if( zType[0]=='a' ){
    if( zQS && zQS[0] ){
        add_param_list(z, '&');
      }else{
        process_multipart_form_data(z, len);
      }
    }else if( strcmp(zType, "application/x-fossil")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }else if( strcmp(zType, "application/x-fossil-debug")==0 ){
      zRequestUri = mprintf("%s/%s?%s", zScriptName, z, zQS);
    }else{
      zRequestUri = mprintf("%s/%s", zScriptName, z);
    }
    cgi_set_parameter("REQUEST_URI", zRequestUri);
  }
  if( zPathInfo==0 ){
    int i, j;
    for(i=0; zRequestUri[i]==zScriptName[i] && zRequestUri[i]; i++){}
    for(j=i; zRequestUri[j] && zRequestUri[j]!='?'; j++){}
    zPathInfo = fossil_strndup(zRequestUri+i, j-i);
    cgi_set_parameter_nocopy("PATH_INFO", zPathInfo, 0);
    if( j>i && zScriptName[i]!=0 ){
      /* If SCRIPT_NAME is not a prefix of REQUEST_URI, truncate it so
      ** that it is.  See https://fossil-scm.org/forum/forumpost/049e8650ed
      */
      char *zNew = fossil_strndup(zScriptName, i);
      blob_read_from_channel(&g.cgiIn, g.httpIn, len);
      cgi_replace_parameter("SCRIPT_NAME", zNew);
    }
  }
#ifdef FOSSIL_ENABLE_JSON
  if(noJson==0 && json_request_is_json_api(zPathInfo)){
    /* We need to change some following behaviour depending on whether
    ** we are operating in JSON mode or not. We cannot, however, be
    ** certain whether we should/need to be in JSON mode until the
    ** PATH_INFO is set up.
    */
    g.json.isJsonMode = 1;
    json_bootstrap_early();
  }else{
    assert(!g.json.isJsonMode &&
           "Internal misconfiguration of g.json.isJsonMode");

  }
#endif
  z = (char*)P("HTTP_COOKIE");
  if( z ){
    z = mprintf("%s",z);
    z = fossil_strdup(z);
    add_param_list(z, ';');
    z = (char*)cookie_value("skin",0);
    if(z){
      skin_use_alternative(z, 2, SKIN_FROM_COOKIE);
    }
  }

  cgi_setup_query_string();

  z = (char*)P("REMOTE_ADDR");
  if( z ){
    g.zIpAddr = fossil_strdup(z);
  }

  zContentLength = P("CONTENT_LENGTH");
  if( zContentLength==0 ){
    len = 0;
    if( sqlite3_stricmp(PD("REQUEST_METHOD",""),"POST")==0 ){
      malformed_request("missing CONTENT_LENGTH on a POST method");
    }
  }else{
    len = atoi(zContentLength);
  }
  zType = P("CONTENT_TYPE");
  zSemi = zType ? strchr(zType, ';') : 0;
  if( zSemi ){
    g.zContentType = fossil_strndup(zType, (int)(zSemi-zType));
    zType = g.zContentType;
  }else{
    g.zContentType = zType;
  }
  blob_zero(&g.cgiIn);
  if( len>0 && zType ){
    if( blob_read_from_cgi(&g.cgiIn, len)<len ){
      char *zMsg = mprintf("CGI content-length mismatch:  Wanted %d bytes"
                           " but got only %d\n", len, blob_size(&g.cgiIn));
      malformed_request(zMsg);
    }
    if( fossil_strcmp(zType, "application/x-fossil")==0 ){
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }
#ifdef FOSSIL_ENABLE_JSON
    if( noJson==0 && g.json.isJsonMode!=0
        && json_can_consume_content_type(zType)!=0 ){
      cgi_parse_POST_JSON(&g.cgiIn);
      cgi_set_content_type(json_guess_content_type());
    }
#endif /* FOSSIL_ENABLE_JSON */
  }
}

/*
** Decode POST parameter information in the cgiIn content, if any.
*/
void cgi_decode_post_parameters(void){
  int len = blob_size(&g.cgiIn);
  if( len==0 ) return;
  if( fossil_strcmp(g.zContentType,"application/x-www-form-urlencoded")==0
   || fossil_strncmp(g.zContentType,"multipart/form-data",19)==0
  ){
    char *z = blob_str(&g.cgiIn);
    cgi_trace(z);
    if( g.zContentType[0]=='a' ){
      add_param_list(z, '&');
    }else{
      process_multipart_form_data(z, len);
    }
    blob_init(&g.cgiIn, 0, 0);
  }
}

/*
** This is the comparison function used to sort the aParamQP[] array of
** query parameters and cookies.
*/
static int qparam_compare(const void *a, const void *b){
  struct QParam *pA = (struct QParam*)a;
  struct QParam *pB = (struct QParam*)b;
  int c;
  c = strcmp(pA->zName, pB->zName);
  c = fossil_strcmp(pA->zName, pB->zName);
  if( c==0 ){
    c = pA->seq - pB->seq;
  }
  return c;
}

/*
736
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-
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    qsort(aParamQP, nUsedQP, sizeof(aParamQP[0]), qparam_compare);
    sortQP = 0;
    /* After sorting, remove duplicate parameters.  The secondary sort
    ** key is aParamQP[].seq and we keep the first entry.  That means
    ** with duplicate calls to cgi_set_parameter() the second and
    ** subsequent calls are effectively no-ops. */
    for(i=j=1; i<nUsedQP; i++){
      if( strcmp(aParamQP[i].zName,aParamQP[i-1].zName)==0 ){
      if( fossil_strcmp(aParamQP[i].zName,aParamQP[i-1].zName)==0 ){
        continue;
      }
      if( j<i ){
        memcpy(&aParamQP[j], &aParamQP[i], sizeof(aParamQP[j]));
      }
      j++;
    }
    nUsedQP = j;
  }

  /* Invoking with a NULL zName is just a way to cause the parameters
  ** to be sorted.  So go ahead and bail out in that case */
  if( zName==0 || zName[0]==0 ) return 0;

  /* Do a binary search for a matching query parameter */
  lo = 0;
  hi = nUsedQP-1;
  while( lo<=hi ){
    mid = (lo+hi)/2;
    c = strcmp(aParamQP[mid].zName, zName);
    c = fossil_strcmp(aParamQP[mid].zName, zName);
    if( c==0 ){
      CGIDEBUG(("mem-match [%s] = [%s]\n", zName, aParamQP[mid].zValue));
      aParamQP[mid].isFetched = 1;
      return aParamQP[mid].zValue;
    }else if( c>0 ){
      hi = mid-1;
    }else{
      lo = mid+1;
    }
  }

  /* If no match is found and the name begins with an upper-case
  ** letter, then check to see if there is an environment variable
  ** with the given name.
  */
  if( isupper(zName[0]) ){
    const char *zValue = getenv(zName);
  if( fossil_isupper(zName[0]) ){
    const char *zValue = fossil_getenv(zName);
    if( zValue ){
      cgi_set_parameter_nocopy(zName, zValue);
      cgi_set_parameter_nocopy(zName, zValue, 0);
      CGIDEBUG(("env-match [%s] = [%s]\n", zName, zValue));
      return zValue;
    }
  }
  CGIDEBUG(("no-match [%s]\n", zName));
  return zDefault;
}

/*
** Renders the "begone, spider" page and exits.
*/
static void cgi_begone_spider(const char *zName){
  Blob content = empty_blob;
  cgi_set_content(&content);
  style_set_current_feature("test");
  style_submenu_enable(0);
  style_header("Malicious Query Detected");
  @ <h2>Begone, Knave!</h2>
  @ <p>This page was generated because Fossil detected an (unsuccessful)
  @ SQL injection attack or other nefarious content in your HTTP request.
  @
  @ <p>If you believe you are innocent and have reached this page in error,
  @ contact the Fossil developers on the Fossil-SCM Forum.  Type
  @ "fossil-scm forum" into any search engine to locate the Fossil-SCM Forum.
  style_finish_page();
  cgi_set_status(418,"I'm a teapot");
  cgi_reply();
  fossil_errorlog("Xpossible hack attempt - 418 response on \"%s\"", zName);
  exit(0);
}

/*
** If looks_like_sql_injection() returns true for the given string, calls
** cgi_begone_spider() and does not return, else this function has no
** side effects. The range of checks performed by this function may
** be extended in the future.
**
** Checks are omitted for any logged-in user.
**
** This is NOT a defense against SQL injection.  Fossil should easily be
** proof against SQL injection without this routine.  Rather, this is an
** attempt to avoid denial-of-service caused by persistent spiders that hammer
** the server with dozens or hundreds of SQL injection attempts per second
** against pages (such as /vdiff) that are expensive to compute.  In other
** words, this is an effort to reduce the CPU load imposed by malicious
** spiders.  It is not an effect defense against SQL injection vulnerabilities.
*/
void cgi_value_spider_check(const char *zTxt, const char *zName){
  if( g.zLogin==0 && looks_like_sql_injection(zTxt) ){
    cgi_begone_spider(zName);
  }
}

/*
** A variant of cgi_parameter() with the same semantics except that if
** cgi_parameter(zName,zDefault) returns a value other than zDefault
** then it passes that value to cgi_value_spider_check().
*/
const char *cgi_parameter_nosql(const char *zName, const char *zDefault){
  const char *zTxt = cgi_parameter(zName, zDefault);

  if( zTxt!=zDefault ){
    cgi_value_spider_check(zTxt, zName);
  }
  return zTxt;
}

/*
** Return the value of the first defined query parameter or cookie whose
** name appears in the list of arguments.  Or if no parameter is found,
** return NULL.
*/
const char *cgi_coalesce(const char *zName, ...){
  va_list ap;
  const char *z;
  const char *zX;
  if( zName==0 ) return 0;
  z = cgi_parameter(zName, 0);
  va_start(ap, zName);
  while( z==0 && (zX = va_arg(ap,const char*))!=0 ){
    z = cgi_parameter(zX, 0);
  }
  va_end(ap);
  return z;
}

/*
** Return the value of a CGI parameter with leading and trailing
** spaces removed and with internal \r\n changed to just \n
*/
char *cgi_parameter_trimmed(const char *zName, const char *zDefault){
  const char *zIn;
  char *zOut, c;
  int i, j;
  zIn = cgi_parameter(zName, 0);
  if( zIn==0 ) zIn = zDefault;
  if( zIn==0 ) return 0;
  while( fossil_isspace(zIn[0]) ) zIn++;
  zOut = fossil_strdup(zIn);
  for(i=j=0; (c = zOut[i])!=0; i++){
    if( c=='\r' && zOut[i+1]=='\n' ) continue;
    zOut[j++] = c;
  }
  zOut[j] = 0;
  while( j>0 && fossil_isspace(zOut[j-1]) ) zOut[--j] = 0;
  return zOut;
}

/*
** Return true if the CGI parameter zName exists and is not equal to 0,
** or "no" or "off".
*/
int cgi_parameter_boolean(const char *zName){
  const char *zIn = cgi_parameter(zName, 0);
  if( zIn==0 ) return 0;
  return zIn[0]==0 || is_truth(zIn);
}

/*
** Return either an empty string "" or the string "checked" depending
** on whether or not parameter zName has value iValue.  If parameter
** zName does not exist, that is assumed to be the same as value 0.
**
** This routine implements the PCK(x) and PIF(x,y) macros.  The PIF(x,y)
** macro generateds " checked" if the value of parameter x equals integer y.
** PCK(x) is the same as PIF(x,1).  These macros are used to generate
** the "checked" attribute on checkbox and radio controls of forms.
*/
const char *cgi_parameter_checked(const char *zName, int iValue){
  const char *zIn = cgi_parameter(zName,0);
  int x;
  if( zIn==0 ){
    x = 0;
  }else if( !fossil_isdigit(zIn[0]) ){
    x = is_truth(zIn);
  }else{
    x = atoi(zIn);
  }
  return x==iValue ? "checked" : "";
}

/*
** Return the name of the i-th CGI parameter.  Return NULL if there
** are fewer than i registered CGI parmaeters.
** are fewer than i registered CGI parameters.
*/
const char *cgi_parameter_name(int i){
  if( i>=0 && i<nUsedQP ){
    return aParamQP[i].zName;
  }else{
    return 0;
  }
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    if( cgi_parameter(z2,0)==0 ) return 0;
  }
  va_end(ap);
  return 1;
}

/*
** Load all relevant environment variables into the parameter buffer.
** Invoke this routine prior to calling cgi_print_all() in order to see
** the full CGI environment.  This routine intended for debugging purposes
** only.
*/
void cgi_load_environment(void){
  /* The following is a list of environment variables that Fossil considers
  ** to be "relevant". */
  static const char *const azCgiVars[] = {
    "COMSPEC", "DOCUMENT_ROOT", "GATEWAY_INTERFACE", "SCGI",
    "HTTP_ACCEPT", "HTTP_ACCEPT_CHARSET", "HTTP_ACCEPT_ENCODING",
    "HTTP_ACCEPT_LANGUAGE", "HTTP_AUTHENICATION",
    "HTTP_CONNECTION", "HTTP_HOST",
    "HTTP_IF_NONE_MATCH", "HTTP_IF_MODIFIED_SINCE",
    "HTTP_USER_AGENT", "HTTP_REFERER", "PATH_INFO", "PATH_TRANSLATED",
    "QUERY_STRING", "REMOTE_ADDR", "REMOTE_PORT",
    "REMOTE_USER", "REQUEST_METHOD", "REQUEST_SCHEME",
    "REQUEST_URI", "SCRIPT_FILENAME", "SCRIPT_NAME", "SERVER_NAME",
    "SERVER_PROTOCOL", "HOME", "FOSSIL_HOME", "USERNAME", "USER",
    "FOSSIL_USER", "SQLITE_TMPDIR", "TMPDIR",
    "TEMP", "TMP", "FOSSIL_VFS",
    "FOSSIL_FORCE_TICKET_MODERATION", "FOSSIL_FORCE_WIKI_MODERATION",
    "FOSSIL_TCL_PATH", "TH1_DELETE_INTERP", "TH1_ENABLE_DOCS",
    "TH1_ENABLE_HOOKS", "TH1_ENABLE_TCL", "REMOTE_HOST",
    "CONTENT_TYPE", "CONTENT_LENGTH",
  };
  int i;
  for(i=0; i<count(azCgiVars); i++) (void)P(azCgiVars[i]);
}

/*
** Print all query parameters on standard output.  Format the
** parameters as HTML.  This is used for testing and debugging.
** Print all query parameters on standard output.
** This is used for testing and debugging.
**
** Omit the values of the cookies unless showAll is true.
**
** The eDest parameter determines where the output is shown:
**
**     eDest==0:    Rendering as HTML into the CGI reply
**     eDest==1:    Written to fossil_trace
**     eDest==2:    Written to cgi_debug
**     eDest==3:    Written to out  (Used only by fossil_errorlog())
*/
void cgi_print_all(void){
void cgi_print_all(int showAll, unsigned int eDest, FILE *out){
  int i;
  cgi_parameter("","");  /* Force the parameters into sorted order */
  for(i=0; i<nUsedQP; i++){
    cgi_printf("%s = %s  <br />\n",
       htmlize(aParamQP[i].zName, -1), htmlize(aParamQP[i].zValue, -1));
  }
}

    const char *zName = aParamQP[i].zName;
    const char *zValue = aParamQP[i].zValue;
    if( fossil_stricmp("HTTP_COOKIE",zName)==0
     || fossil_strnicmp("fossil-",zName,7)==0
    ){
      if( !showAll ) continue;
      if( eDest==3 ) zValue = "...";
    }
    switch( eDest ){
      case 0: {
        cgi_printf("%h = %h  <br>\n", zName, zValue);
        break;
      }
      case 1: {
        fossil_trace("%s = %s\n", zName, zValue);
        break;
      }
/*
** Write HTML text for an option menu to standard output.  zParam
** is the query parameter that the option menu sets.  zDflt is the
** initial value of the option menu.  Addition arguments are name/value
** pairs that define values on the menu.  The list is terminated with
** a single NULL argument.
      case 2: {
*/
void cgi_optionmenu(int in, const char *zP, const char *zD, ...){
  va_list ap;
  char *zName, *zVal;
        cgi_debug("%s = %s\n", zName, zValue);
  int dfltSeen = 0;
  cgi_printf("%*s<select size=1 name=\"%s\">\n", in, "", zP);
  va_start(ap, zD);
  while( (zName = va_arg(ap, char*))!=0 && (zVal = va_arg(ap, char*))!=0 ){
    if( strcmp(zVal,zD)==0 ){ dfltSeen = 1; break; }
  }
  va_end(ap);
        break;
      }
      case 3: {
  if( !dfltSeen ){
    if( zD[0] ){
      cgi_printf("%*s<option value=\"%h\" selected>%h</option>\n",
        if( zValue!=0 && strlen(zValue)>100 ){
          fprintf(out,"%s = %.100s...\n", zName, zValue);
        in+2, "", zD, zD);
    }else{
      cgi_printf("%*s<option value=\"\" selected>&nbsp;</option>\n", in+2, "");
    }
  }
        }else{
          fprintf(out,"%s = %s\n", zName, zValue);
        }
        break;
      }
  va_start(ap, zD);
  while( (zName = va_arg(ap, char*))!=0 && (zVal = va_arg(ap, char*))!=0 ){
    if( zName[0] ){
      cgi_printf("%*s<option value=\"%h\"%s>%h</option>\n",
    }
  }
}
        in+2, "",
        zVal,
        strcmp(zVal, zD) ? "" : " selected",
        zName
      );
    }else{
      cgi_printf("%*s<option value=\"\"%s>&nbsp;</option>\n",
        in+2, "",
        strcmp(zVal, zD) ? "" : " selected"
      );
    }

  }
  va_end(ap);
  cgi_printf("%*s</select>\n", in, "");
}

/*
** This routine works a lot like cgi_optionmenu() except that the list of
** values is contained in an array.  Also, the values are just values, not
** name/value pairs as in cgi_optionmenu.
** Put information about the N-th parameter into arguments.
** Return non-zero on success, and return 0 if there is no N-th parameter.
*/
void cgi_v_optionmenu(
  int in,              /* Indent by this amount */
  const char *zP,      /* The query parameter name */
  const char *zD,      /* Default value */
int cgi_param_info(
  int N,
  const char **pzName,
  const char **pzValue,
  const char **az      /* NULL-terminated list of allowed values */
  int *pbIsQP
){
  if( N>=0 && N<nUsedQP ){
    *pzName = aParamQP[N].zName;
    *pzValue = aParamQP[N].zValue;
    *pbIsQP = aParamQP[N].isQP;
    return 1;
  }else{
    *pzName = 0;
  const char *zVal;
  int i;
    *pzValue = 0;
    *pbIsQP = 0;
  cgi_printf("%*s<select size=1 name=\"%s\">\n", in, "", zP);
  for(i=0; az[i]; i++){
    if( strcmp(az[i],zD)==0 ) break;
    return 0;
  }
  if( az[i]==0 ){
    if( zD[0]==0 ){
}
      cgi_printf("%*s<option value=\"\" selected>&nbsp;</option>\n",
       in+2, "");
    }else{
      cgi_printf("%*s<option value=\"%h\" selected>%h</option>\n",
       in+2, "", zD, zD);
    }

  }
  while( (zVal = *(az++))!=0  ){
    if( zVal[0] ){
      cgi_printf("%*s<option value=\"%h\"%s>%h</option>\n",
        in+2, "",
        zVal,
/*
** Export all untagged query parameters (but not cookies or environment
** variables) as hidden values of a form.
*/
void cgi_query_parameters_to_hidden(void){
  int i;
  const char *zN, *zV;
        strcmp(zVal, zD) ? "" : " selected",
        zVal
  for(i=0; i<nUsedQP; i++){
    if( aParamQP[i].isQP==0 || aParamQP[i].cTag ) continue;
    zN = aParamQP[i].zName;
    zV = aParamQP[i].zValue;
      );
    }else{
      cgi_printf("%*s<option value=\"\"%s>&nbsp;</option>\n",
    @ <input type="hidden" name="%h(zN)" value="%h(zV)">
        in+2, "",
        strcmp(zVal, zD) ? "" : " selected"
      );
    }
  }
  }
}
  cgi_printf("%*s</select>\n", in, "");
}


/*
** This routine works a lot like cgi_v_optionmenu() except that the list
** is a list of pairs.  The first element of each pair is the value used
** internally and the second element is the value displayed to the user.
** Export all untagged query parameters (but not cookies or environment
** variables) to the HQuery object.
*/
void cgi_v_optionmenu2(
  int in,              /* Indent by this amount */
  const char *zP,      /* The query parameter name */
void cgi_query_parameters_to_url(HQuery *p){
  int i;
  for(i=0; i<nUsedQP; i++){
    if( aParamQP[i].isQP==0 || aParamQP[i].cTag ) continue;
    url_add_parameter(p, aParamQP[i].zName, aParamQP[i].zValue);
  const char *zD,      /* Default value */
  const char **az      /* NULL-terminated list of allowed values */
  }
}

){
  const char *zVal;
/*
** Reconstruct the URL into memory obtained from fossil_malloc() and
** return a pointer to that URL.
*/
char *cgi_reconstruct_original_url(void){
  int i;
  cgi_printf("%*s<select size=1 name=\"%s\">\n", in, "", zP);
  for(i=0; az[i]; i+=2){
    if( strcmp(az[i],zD)==0 ) break;
  char cSep = '?';
  Blob url;
  blob_init(&url, 0, 0);
  blob_appendf(&url, "%s/%s", g.zBaseURL, g.zPath);
  for(i=0; i<nUsedQP; i++){
    if( aParamQP[i].isQP ){
  }
  if( az[i]==0 ){
    if( zD[0]==0 ){
      struct QParam *p = &aParamQP[i];
      if( p->zValue && p->zValue[0] ){
      cgi_printf("%*s<option value=\"\" selected>&nbsp;</option>\n",
       in+2, "");
    }else{
        blob_appendf(&url, "%c%t=%t", cSep, p->zName, p->zValue);
      }else{
      cgi_printf("%*s<option value=\"%h\" selected>%h</option>\n",
       in+2, "", zD, zD);
    }
        blob_appendf(&url, "%c%t", cSep, p->zName);
      }
  }
  while( (zVal = *(az++))!=0  ){
    const char *zName = *(az++);
    if( zName[0] ){
      cSep = '&';
    }
  }
  return blob_str(&url);
}

/*
** Tag query parameter zName so that it is not exported by
** cgi_query_parameters_to_hidden().  Or if zName==0, then
** untag all query parameters.
*/
void cgi_tag_query_parameter(const char *zName){
  int i;
  if( zName==0 ){
      cgi_printf("%*s<option value=\"%h\"%s>%h</option>\n",
        in+2, "",
        zVal,
        strcmp(zVal, zD) ? "" : " selected",
        zName
      );
    }else{
    for(i=0; i<nUsedQP; i++) aParamQP[i].cTag = 0;
  }else{
      cgi_printf("%*s<option value=\"%h\"%s>&nbsp;</option>\n",
        in+2, "",
        zVal,
        strcmp(zVal, zD) ? "" : " selected"
    for(i=0; i<nUsedQP; i++){
      if( strcmp(zName,aParamQP[i].zName)==0 ) aParamQP[i].cTag = 1;
      );
    }
  }
  cgi_printf("%*s</select>\n", in, "");
}

/*
** This routine works like "printf" except that it has the
** extra formatting capabilities such as %h and %t.
*/
void cgi_printf(const char *zFormat, ...){
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1150
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1167
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1220

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1227

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1232
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1234


1235
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1237
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1239
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1259


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1269
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1278
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1958
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1965
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2108
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2110
2111
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2118
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2121
2122
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2126
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2128

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2304
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2562
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2626
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2641
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2649
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2677
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2693
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2726
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2738
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2782
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2789
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2795



2796





















2797
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2800
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2808
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2899
2900
2901
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2907
2908
2909
2910







-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
+





-
+


+
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-
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+













-
+

-
+



-
+






+
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-
+

-
-
+
+
+






-
+
-

-

+
-
-
+
+

+
+


-
+

+
-
-
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+
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+





-
+


+




-
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-
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-
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+


-
+

-
+

-
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-
+
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-
+


+
+
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-
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+



+
+

+
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+
+
+
+

-
+

+
-
+
+











-
-
+
+
+
+
+
+
+

-
+



+

-
+




+

+
-
+


+
+
+
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-
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+




-
-
+
+
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+
+
+
+
+







+
+
-
-
+
+







-
-
+
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-
+
+

+
-
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+
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+
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-
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-
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+
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-
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+
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-
+
+

-
-
+
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-
+
+


+
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-
+




+
-
-
-
-
-
-
+
+
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+
+
+
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+

+
+






-
+

-
+







-
-
+
+










-
+




+
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+









-
-
-
-
-
-
+
+
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+
+
+
+
-
-
-
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-
+
+
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-
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+
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+
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-
-
-
-
+
+
+
+
+
+














-
+

+
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+
+
+
+
+
+
+
+
  vxprintf(pContent,zFormat,ap);
}


/*
** Send a reply indicating that the HTTP request was malformed
*/
static void malformed_request(void){
  cgi_set_status(501, "Not Implemented");
  cgi_printf(
    "<html><body>Unrecognized HTTP Request</body></html>\n"
  );
static NORETURN void malformed_request(const char *zMsg, ...){
  va_list ap;
  char *z;
  va_start(ap, zMsg);
  z = vmprintf(zMsg, ap);
  va_end(ap);
  cgi_set_status(400, "Bad Request");
  zContentType = "text/plain";
  if( g.zReqType==0 ) g.zReqType = "WWW";
  if( g.zReqType[0]=='C' && PD("SERVER_SOFTWARE",0)!=0 ){
    const char *zServer = PD("SERVER_SOFTWARE","");
    cgi_printf("Bad CGI Request from \"%s\": %s\n",zServer,z);
  }else{
    cgi_printf("Bad %s Request: %s\n", g.zReqType, z);
  }
  fossil_free(z);
  cgi_reply();
  exit(0);
  fossil_exit(0);
}

/*
** Panic and die while processing a webpage.
*/
void cgi_panic(const char *zFormat, ...){
NORETURN void cgi_panic(const char *zFormat, ...){
  va_list ap;
  cgi_reset_content();
#ifdef FOSSIL_ENABLE_JSON
  if( g.json.isJsonMode ){
    char * zMsg;
    va_start(ap, zFormat);
    zMsg = vmprintf(zFormat,ap);
    va_end(ap);
    json_err( FSL_JSON_E_PANIC, zMsg, 1 );
    free(zMsg);
    fossil_exit( g.isHTTP ? 0 : 1 );
  }else
#endif /* FOSSIL_ENABLE_JSON */
  {
  cgi_set_status(500, "Internal Server Error");
  cgi_printf(
    "<html><body><h1>Internal Server Error</h1>\n"
    "<plaintext>"
  );
  va_start(ap, zFormat);
  vxprintf(pContent,zFormat,ap);
  va_end(ap);
  cgi_reply();
  exit(1);
    cgi_set_status(500, "Internal Server Error");
    cgi_printf(
               "<html><body><h1>Internal Server Error</h1>\n"
               "<plaintext>"
               );
    va_start(ap, zFormat);
    vxprintf(pContent,zFormat,ap);
    va_end(ap);
    cgi_reply();
    fossil_exit(1);
  }
}

/* z[] is the value of an X-FORWARDED-FOR: line in an HTTP header.
** Return a pointer to a string containing the real IP address, or a
** NULL pointer to stick with the IP address previously computed and
** loaded into g.zIpAddr.
*/
static const char *cgi_accept_forwarded_for(const char *z){
  int i;
  if( !cgi_is_loopback(g.zIpAddr) ){
    /* Only accept X-FORWARDED-FOR if input coming from the local machine */
    return 0;
  }
  i = strlen(z)-1;
  while( i>=0 && z[i]!=',' && !fossil_isspace(z[i]) ) i--;
  return &z[++i];
}

/*
** Remove the first space-delimited token from a string and return
** a pointer to it.  Add a NULL to the string to terminate the token.
** Make *zLeftOver point to the start of the next token.
*/
static char *extract_token(char *zInput, char **zLeftOver){
  char *zResult = 0;
  if( zInput==0 ){
    if( zLeftOver ) *zLeftOver = 0;
    return 0;
  }
  while( isspace(*zInput) ){ zInput++; }
  while( fossil_isspace(*zInput) ){ zInput++; }
  zResult = zInput;
  while( *zInput && !isspace(*zInput) ){ zInput++; }
  while( *zInput && !fossil_isspace(*zInput) ){ zInput++; }
  if( *zInput ){
    *zInput = 0;
    zInput++;
    while( isspace(*zInput) ){ zInput++; }
    while( fossil_isspace(*zInput) ){ zInput++; }
  }
  if( zLeftOver ){ *zLeftOver = zInput; }
  return zResult;
}

/*
** Determine the IP address on the other side of a connection.
** Return a pointer to a string.  Or return 0 if unable.
**
** The string is held in a static buffer that is overwritten on
** each call.
*/
char *cgi_remote_ip(int fd){
#if 0
  static char zIp[100];
  struct sockaddr_in6 addr;
  socklen_t sz = sizeof(addr);
  if( getpeername(fd, &addr, &sz) ) return 0;
  zIp[0] = 0;
  if( inet_ntop(AF_INET6, &addr, zIp, sizeof(zIp))==0 ){
    return 0;
  }
  return zIp;
#else
  struct sockaddr_in remoteName;
  socklen_t size = sizeof(struct sockaddr_in);
  if( getpeername(fd, (struct sockaddr*)&remoteName, &size) ) return 0;
  return inet_ntoa(remoteName.sin_addr);
#endif
}

/*
** This routine handles a single HTTP request which is coming in on
** standard input and which replies on standard output.
** g.httpIn and which replies on g.httpOut
**
** The HTTP request is read from standard input and is used to initialize
** environment variables as per CGI.  The cgi_init() routine to complete
** The HTTP request is read from g.httpIn and is used to initialize
** entries in the cgi_parameter() hash, as if those entries were
** environment variables.  A call to cgi_init() completes
** the setup.  Once all the setup is finished, this procedure returns
** and subsequent code handles the actual generation of the webpage.
*/
void cgi_handle_http_request(const char *zIpAddr){
  char *z, *zToken;
  int i;
  struct sockaddr_in remoteName;
  const char *zScheme = "http";
  size_t size = sizeof(struct sockaddr_in);
  char zLine[2000];     /* A single line of input. */

  g.fullHttpReply = 1;
  g.zReqType = "HTTP";
  if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
    malformed_request();
  if( cgi_fgets(zLine, sizeof(zLine))==0 ){
    malformed_request("missing header");
  }
  blob_append(&g.httpHeader, zLine, -1);
  cgi_trace(zLine);
  zToken = extract_token(zLine, &z);
  if( zToken==0 ){
    malformed_request();
    malformed_request("malformed HTTP header");
  }
  if( fossil_strcmp(zToken,"GET")!=0
  if( strcmp(zToken,"GET")!=0 && strcmp(zToken,"POST")!=0
      && strcmp(zToken,"HEAD")!=0 ){
    malformed_request();
   && fossil_strcmp(zToken,"POST")!=0
   && fossil_strcmp(zToken,"HEAD")!=0
  ){
    malformed_request("unsupported HTTP method: \"%s\" - Fossil only supports"
                      "GET, POST, and HEAD", zToken);
  }
  cgi_setenv("GATEWAY_INTERFACE","CGI/1.0");
  cgi_setenv("REQUEST_METHOD",zToken);
  zToken = extract_token(z, &z);
  if( zToken==0 ){
    malformed_request();
    malformed_request("malformed URI in the HTTP header");
  }
  cgi_setenv("REQUEST_URI", zToken);
  cgi_setenv("SCRIPT_NAME", "");
  for(i=0; zToken[i] && zToken[i]!='?'; i++){}
  if( zToken[i] ) zToken[i++] = 0;
  cgi_setenv("PATH_INFO", zToken);
  cgi_setenv("QUERY_STRING", &zToken[i]);
  if( zIpAddr==0 &&
        getpeername(fileno(g.httpIn), (struct sockaddr*)&remoteName, 
  if( zIpAddr==0 ){
    zIpAddr = cgi_remote_ip(fossil_fileno(g.httpIn));
                                (socklen_t*)&size)>=0
  ){
    zIpAddr = inet_ntoa(remoteName.sin_addr);
  }
  if( zIpAddr ){   
  if( zIpAddr ){
    cgi_setenv("REMOTE_ADDR", zIpAddr);
    g.zIpAddr = mprintf("%s", zIpAddr);
    g.zIpAddr = fossil_strdup(zIpAddr);
  }
 


  /* Get all the optional fields that follow the first line.
  */
  while( cgi_fgets(zLine,sizeof(zLine)) ){
    char *zFieldName;
    char *zVal;

    cgi_trace(zLine);
    blob_append(&g.httpHeader, zLine, -1);
    zFieldName = extract_token(zLine,&zVal);
    if( zFieldName==0 || *zFieldName==0 ) break;
    while( fossil_isspace(*zVal) ){ zVal++; }
    i = strlen(zVal);
    while( i>0 && fossil_isspace(zVal[i-1]) ){ i--; }
    zVal[i] = 0;
    for(i=0; zFieldName[i]; i++){
      zFieldName[i] = fossil_tolower(zFieldName[i]);
    }
    if( fossil_strcmp(zFieldName,"accept-encoding:")==0 ){
      cgi_setenv("HTTP_ACCEPT_ENCODING", zVal);
    }else if( fossil_strcmp(zFieldName,"content-length:")==0 ){
      cgi_setenv("CONTENT_LENGTH", zVal);
    }else if( fossil_strcmp(zFieldName,"content-type:")==0 ){
      cgi_setenv("CONTENT_TYPE", zVal);
    }else if( fossil_strcmp(zFieldName,"cookie:")==0 ){
      cgi_setenv("HTTP_COOKIE", zVal);
    }else if( fossil_strcmp(zFieldName,"https:")==0 ){
      cgi_setenv("HTTPS", zVal);
      zScheme = "https";
    }else if( fossil_strcmp(zFieldName,"host:")==0 ){
      char *z;
      cgi_setenv("HTTP_HOST", zVal);
      z = strchr(zVal, ':');
      if( z ) z[0] = 0;
      cgi_setenv("SERVER_NAME", zVal);
    }else if( fossil_strcmp(zFieldName,"if-none-match:")==0 ){
      cgi_setenv("HTTP_IF_NONE_MATCH", zVal);
    }else if( fossil_strcmp(zFieldName,"if-modified-since:")==0 ){
      cgi_setenv("HTTP_IF_MODIFIED_SINCE", zVal);
    }else if( fossil_strcmp(zFieldName,"referer:")==0 ){
      cgi_setenv("HTTP_REFERER", zVal);
    }else if( fossil_strcmp(zFieldName,"user-agent:")==0 ){
      cgi_setenv("HTTP_USER_AGENT", zVal);
    }else if( fossil_strcmp(zFieldName,"authorization:")==0 ){
      cgi_setenv("HTTP_AUTHORIZATION", zVal);
    }else if( fossil_strcmp(zFieldName,"accept-language:")==0 ){
      cgi_setenv("HTTP_ACCEPT_LANGUAGE", zVal);
    }else if( fossil_strcmp(zFieldName,"x-forwarded-for:")==0 ){
      const char *zIpAddr = cgi_accept_forwarded_for(zVal);
      if( zIpAddr!=0 ){
        g.zIpAddr = fossil_strdup(zIpAddr);
        cgi_replace_parameter("REMOTE_ADDR", g.zIpAddr);
      }
    }else if( fossil_strcmp(zFieldName,"range:")==0 ){
      int x1 = 0;
      int x2 = 0;
      if( sscanf(zVal,"bytes=%d-%d",&x1,&x2)==2 && x1>=0 && x1<=x2 ){
        rangeStart = x1;
        rangeEnd = x2+1;
      }
    }
  }
  cgi_setenv("REQUEST_SCHEME",zScheme);
  cgi_init();
  cgi_trace(0);
}

/*
** This routine handles a single HTTP request from an SSH client which is
** coming in on g.httpIn and which replies on g.httpOut
**
** Once all the setup is finished, this procedure returns
** and subsequent code handles the actual generation of the webpage.
**
** It is called in a loop so some variables will need to be replaced
*/
void cgi_handle_ssh_http_request(const char *zIpAddr){
  static int nCycles = 0;
  static char *zCmd = 0;
  char *z, *zToken;
  const char *zType = 0;
  int i, content_length = 0;
  char zLine[2000];     /* A single line of input. */

  assert( !g.httpUseSSL );
#ifdef FOSSIL_ENABLE_JSON
  if( nCycles==0 ){ json_bootstrap_early(); }
#endif
  if( zIpAddr ){
    if( nCycles==0 ){
      cgi_setenv("REMOTE_ADDR", zIpAddr);
      g.zIpAddr = fossil_strdup(zIpAddr);
    }
  }else{
    fossil_fatal("missing SSH IP address");
  }
  g.zReqType = "HTTP";
  if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
    malformed_request("missing HTTP header");
  }
  cgi_trace(zLine);
  zToken = extract_token(zLine, &z);
  if( zToken==0 ){
    malformed_request("malformed HTTP header");
  }

  if( fossil_strcmp(zToken, "echo")==0 ){
    /* start looking for probes to complete transport_open */
    zCmd = cgi_handle_ssh_probes(zLine, sizeof(zLine), z, zToken);
    if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
      malformed_request("missing HTTP header");
    }
    cgi_trace(zLine);
    zToken = extract_token(zLine, &z);
    if( zToken==0 ){
      malformed_request("malformed HTTP header");
    }
  }else if( zToken && strlen(zToken)==0 && zCmd ){
    /* transport_flip request and continued transport_open */
    cgi_handle_ssh_transport(zCmd);
    if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
      malformed_request("missing HTTP header");
    }
    cgi_trace(zLine);
    zToken = extract_token(zLine, &z);
    if( zToken==0 ){
      malformed_request("malformed HTTP header");
    }
  }

  if( fossil_strcmp(zToken,"GET")!=0 && fossil_strcmp(zToken,"POST")!=0
      && fossil_strcmp(zToken,"HEAD")!=0 ){
    malformed_request("unsupported HTTP method");
  }

  if( nCycles==0 ){
    cgi_setenv("GATEWAY_INTERFACE","CGI/1.0");
    cgi_setenv("REQUEST_METHOD",zToken);
  }

  zToken = extract_token(z, &z);
  if( zToken==0 ){
    malformed_request("malformed URL in HTTP header");
  }
  if( nCycles==0 ){
    cgi_setenv("REQUEST_URI", zToken);
    cgi_setenv("SCRIPT_NAME", "");
  }

  for(i=0; zToken[i] && zToken[i]!='?'; i++){}
  if( zToken[i] ) zToken[i++] = 0;
  if( nCycles==0 ){
    cgi_setenv("PATH_INFO", zToken);
  }else{
    cgi_replace_parameter("PATH_INFO", fossil_strdup(zToken));
  }

  /* Get all the optional fields that follow the first line.
  */
  while( fgets(zLine,sizeof(zLine),g.httpIn) ){
    char *zFieldName;
    char *zVal;

    cgi_trace(zLine);
    zFieldName = extract_token(zLine,&zVal);
    if( zFieldName==0 || *zFieldName==0 ) break;
    while( isspace(*zVal) ){ zVal++; }
    while( fossil_isspace(*zVal) ){ zVal++; }
    i = strlen(zVal);
    while( i>0 && isspace(zVal[i-1]) ){ i--; }
    while( i>0 && fossil_isspace(zVal[i-1]) ){ i--; }
    zVal[i] = 0;
    for(i=0; zFieldName[i]; i++){ zFieldName[i] = tolower(zFieldName[i]); }
    if( strcmp(zFieldName,"user-agent:")==0 ){
      cgi_setenv("HTTP_USER_AGENT", zVal);
    }else if( strcmp(zFieldName,"content-length:")==0 ){
      cgi_setenv("CONTENT_LENGTH", zVal);
    }else if( strcmp(zFieldName,"referer:")==0 ){
      cgi_setenv("HTTP_REFERER", zVal);
    }else if( strcmp(zFieldName,"host:")==0 ){
      cgi_setenv("HTTP_HOST", zVal);
    }else if( strcmp(zFieldName,"content-type:")==0 ){
      cgi_setenv("CONTENT_TYPE", zVal);
    }else if( strcmp(zFieldName,"cookie:")==0 ){
      cgi_setenv("HTTP_COOKIE", zVal);
    }else if( strcmp(zFieldName,"if-none-match:")==0 ){
      cgi_setenv("HTTP_IF_NONE_MATCH", zVal);
    }else if( strcmp(zFieldName,"if-modified-since:")==0 ){
    for(i=0; zFieldName[i]; i++){
      zFieldName[i] = fossil_tolower(zFieldName[i]);
    }
    if( fossil_strcmp(zFieldName,"content-length:")==0 ){
      content_length = atoi(zVal);
    }else if( fossil_strcmp(zFieldName,"content-type:")==0 ){
      g.zContentType = zType = fossil_strdup(zVal);
    }else if( fossil_strcmp(zFieldName,"host:")==0 ){
      if( nCycles==0 ){
        cgi_setenv("HTTP_HOST", zVal);
      }
    }else if( fossil_strcmp(zFieldName,"user-agent:")==0 ){
      if( nCycles==0 ){
        cgi_setenv("HTTP_USER_AGENT", zVal);
      }
    }else if( fossil_strcmp(zFieldName,"x-fossil-transport:")==0 ){
      if( fossil_strnicmp(zVal, "ssh", 3)==0 ){
        if( nCycles==0 ){
          g.fSshClient |= CGI_SSH_FOSSIL;
          g.fullHttpReply = 0;
        }
      }
    }
  }

  if( nCycles==0 ){
    if( ! ( g.fSshClient & CGI_SSH_FOSSIL ) ){
      /* did not find new fossil ssh transport */
      g.fSshClient &= ~CGI_SSH_CLIENT;
      g.fullHttpReply = 1;
      cgi_replace_parameter("REMOTE_ADDR", "127.0.0.1");
    }
  }

  cgi_reset_content();
  cgi_destination(CGI_BODY);

  if( content_length>0 && zType ){
    blob_zero(&g.cgiIn);
    if( fossil_strcmp(zType, "application/x-fossil")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, content_length);
      blob_uncompress(&g.cgiIn, &g.cgiIn);
    }else if( fossil_strcmp(zType, "application/x-fossil-debug")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, content_length);
    }else if( fossil_strcmp(zType, "application/x-fossil-uncompressed")==0 ){
      blob_read_from_channel(&g.cgiIn, g.httpIn, content_length);
    }
  }
  cgi_trace(0);
  nCycles++;
}

/*
** This routine handles the old fossil SSH probes
*/
char *cgi_handle_ssh_probes(char *zLine, int zSize, char *z, char *zToken){
  /* Start looking for probes */
  assert( !g.httpUseSSL );
  while( fossil_strcmp(zToken, "echo")==0 ){
    zToken = extract_token(z, &z);
    if( zToken==0 ){
      malformed_request("malformed probe");
    }
    if( fossil_strncmp(zToken, "test", 4)==0 ||
        fossil_strncmp(zToken, "probe-", 6)==0 ){
      fprintf(g.httpOut, "%s\n", zToken);
      fflush(g.httpOut);
    }else{
      malformed_request("malformed probe");
    }
    if( fgets(zLine, zSize, g.httpIn)==0 ){
      malformed_request("malformed probe");
    }
    cgi_trace(zLine);
    zToken = extract_token(zLine, &z);
    if( zToken==0 ){
      cgi_setenv("HTTP_IF_MODIFIED_SINCE", zVal);
      malformed_request("malformed probe");
    }
  }

  /* Got all probes now first transport_open is completed
  ** so return the command that was requested
  */
  g.fSshClient |= CGI_SSH_COMPAT;
  return fossil_strdup(zToken);

}

/*
** This routine handles the old fossil SSH transport_flip
** and transport_open communications if detected.
*/
void cgi_handle_ssh_transport(const char *zCmd){
  char *z, *zToken;
  char zLine[2000];     /* A single line of input. */

  assert( !g.httpUseSSL );
  /* look for second newline of transport_flip */
  if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
    malformed_request("incorrect transport_flip");
  }
  cgi_trace(zLine);
  zToken = extract_token(zLine, &z);
  if( zToken && strlen(zToken)==0 ){
    /* look for path to fossil */
    if( fgets(zLine, sizeof(zLine),g.httpIn)==0 ){
      if( zCmd==0 ){
        malformed_request("missing fossil command");
      }else{
        /* no new command so exit */
        fossil_exit(0);
      }
    }
    cgi_trace(zLine);
    zToken = extract_token(zLine, &z);
    if( zToken==0 ){
      malformed_request("malformed fossil command");
    }
    /* see if we've seen the command */
    if( zCmd && zCmd[0] && fossil_strcmp(zToken, zCmd)==0 ){
      return;
    }else{
      malformed_request("transport_open failed");
    }
  }else{
    malformed_request("transport_flip failed");
  }
}

/*
** This routine handles a single SCGI request which is coming in on
** g.httpIn and which replies on g.httpOut
**
** The SCGI request is read from g.httpIn and is used to initialize
** entries in the cgi_parameter() hash, as if those entries were
** environment variables.  A call to cgi_init() completes
** the setup.  Once all the setup is finished, this procedure returns
** and subsequent code handles the actual generation of the webpage.
*/
void cgi_handle_scgi_request(void){
  char *zHdr;
  char *zToFree;
  int nHdr = 0;
  int nRead;
  int c, n, m;

  assert( !g.httpUseSSL );
  while( (c = fgetc(g.httpIn))!=EOF && fossil_isdigit((char)c) ){
    nHdr = nHdr*10 + (char)c - '0';
  }
  if( nHdr<16 ) malformed_request("SCGI header too short");
  zToFree = zHdr = fossil_malloc(nHdr);
  nRead = (int)fread(zHdr, 1, nHdr, g.httpIn);
  if( nRead<nHdr ) malformed_request("cannot read entire SCGI header");
  nHdr = nRead;
  while( nHdr ){
    for(n=0; n<nHdr && zHdr[n]; n++){}
    for(m=n+1; m<nHdr && zHdr[m]; m++){}
    if( m>=nHdr ) malformed_request("SCGI header formatting error");
    cgi_set_parameter(zHdr, zHdr+n+1);
    zHdr += m+1;
    nHdr -= m+1;
  }
  fossil_free(zToFree);
  fgetc(g.httpIn);  /* Read past the "," separating header from content */
  cgi_init();
}


#if INTERFACE
/*
** Bitmap values for the flags parameter to cgi_http_server().
*/
#define HTTP_SERVER_LOCALHOST      0x0001     /* Bind to 127.0.0.1 only */
#define HTTP_SERVER_SCGI           0x0002     /* SCGI instead of HTTP */
#define HTTP_SERVER_HAD_REPOSITORY 0x0004     /* Was the repository open? */
#define HTTP_SERVER_HAD_CHECKOUT   0x0008     /* Was a checkout open? */
#define HTTP_SERVER_REPOLIST       0x0010     /* Allow repo listing */
#define HTTP_SERVER_NOFORK         0x0020     /* Do not call fork() */
#define HTTP_SERVER_UNIXSOCKET     0x0040     /* Use a unix-domain socket */

#endif /* INTERFACE */

/*
** Maximum number of child processes that we can have running
** at one time before we start slowing things down.
** at one time.  Set this to 0 for "no limit".
*/
#ifndef FOSSIL_MAX_CONNECTIONS
#define MAX_PARALLEL 2
# define FOSSIL_MAX_CONNECTIONS 1000
#endif

/*
** Implement an HTTP server daemon listening on port iPort.
**
** As new connections arrive, fork a child and let child return
** out of this procedure call.  The child will handle the request.
** The parent never returns from this procedure.
**
** Return 0 to each child as it runs.  If unable to establish a
** listening socket, return non-zero.
*/
int cgi_http_server(int mnPort, int mxPort, char *zBrowser){
#ifdef __MINGW32__
int cgi_http_server(
  int mnPort, int mxPort,   /* Range of TCP ports to try */
  const char *zBrowser,     /* Run this browser, if not NULL */
  const char *zIpAddr,      /* Bind to this IP address, if not null */
  int flags                 /* HTTP_SERVER_* flags */
){
#if defined(_WIN32)
  /* Use win32_http_server() instead */
  exit(1);
  fossil_exit(1);
#else
  int listener = -1;           /* The server socket */
  int connection;              /* A socket for each individual connection */
  int nRequest = 0;            /* Number of requests handled so far */
  fd_set readfds;              /* Set of file descriptors for select() */
  size_t lenaddr;              /* Length of the inaddr structure */
  socklen_t lenaddr;           /* Length of the inaddr structure */
  int child;                   /* PID of the child process */
  int nchildren = 0;           /* Number of child processes */
  struct timeval delay;        /* How long to wait inside select() */
  struct sockaddr_in inaddr;   /* The socket address */
  struct sockaddr_un uxaddr;   /* The address for unix-domain sockets */
  int opt = 1;                 /* setsockopt flag */
  int rc;                      /* Result code from system calls */
  int iPort = mnPort;
  int iPort = mnPort;          /* Port to try to use */

  while( iPort<=mxPort ){
    if( flags & HTTP_SERVER_UNIXSOCKET ){
      /* Initialize a Unix socket named g.zSockName */
      assert( g.zSockName!=0 );
      memset(&uxaddr, 0, sizeof(uxaddr));
      if( strlen(g.zSockName)>sizeof(uxaddr.sun_path) ){
        fossil_fatal("name of unix socket too big: %s\nmax size: %d\n",
                     g.zSockName, (int)sizeof(uxaddr.sun_path));
      }
      if( file_isdir(g.zSockName, ExtFILE)!=0 ){
        if( !file_issocket(g.zSockName) ){
          fossil_fatal("cannot name socket \"%s\" because another object"
                       " with that name already exists", g.zSockName);
        }else{
          unlink(g.zSockName);
        }
      }
      uxaddr.sun_family = AF_UNIX;
      strncpy(uxaddr.sun_path, g.zSockName, sizeof(uxaddr.sun_path)-1);
      listener = socket(AF_UNIX, SOCK_STREAM, 0);
      if( listener<0 ){
        fossil_fatal("unable to create a unix socket named %s",
                     g.zSockName);
      }
      /* Set the access permission for the new socket.  Default to 0660.
      ** But use an alternative specified by --socket-mode if available.
      ** Do this before bind() to avoid a race condition. */
      if( g.zSockMode ){
        file_set_mode(g.zSockName, listener, g.zSockMode, 0);
      }else{
        file_set_mode(g.zSockName, listener, "0660", 1);
      }
    }else{
      /* Initialize a TCP/IP socket on port iPort */
    memset(&inaddr, 0, sizeof(inaddr));
    inaddr.sin_family = AF_INET;
    inaddr.sin_addr.s_addr = INADDR_ANY;
    inaddr.sin_port = htons(iPort);
    listener = socket(AF_INET, SOCK_STREAM, 0);
    if( listener<0 ){
      iPort++;
      continue;
      memset(&inaddr, 0, sizeof(inaddr));
      inaddr.sin_family = AF_INET;
      if( zIpAddr ){
        inaddr.sin_addr.s_addr = inet_addr(zIpAddr);
        if( inaddr.sin_addr.s_addr == INADDR_NONE ){
          fossil_fatal("not a valid IP address: %s", zIpAddr);
        }
      }else if( flags & HTTP_SERVER_LOCALHOST ){
        inaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
      }else{
        inaddr.sin_addr.s_addr = htonl(INADDR_ANY);
      }
      inaddr.sin_port = htons(iPort);
      listener = socket(AF_INET, SOCK_STREAM, 0);
      if( listener<0 ){
        iPort++;
        continue;
      }
    }

    /* if we can't terminate nicely, at least allow the socket to be reused */
    setsockopt(listener,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));

    if( bind(listener, (struct sockaddr*)&inaddr, sizeof(inaddr))<0 ){
  
    if( flags & HTTP_SERVER_UNIXSOCKET ){
      rc = bind(listener, (struct sockaddr*)&uxaddr, sizeof(uxaddr));
      /* Set the owner of the socket if requested by --socket-owner.  This
      ** must wait until after bind(), after the filesystem object has been
      ** created.  See https://lkml.org/lkml/2004/11/1/84 and
      ** https://fossil-scm.org/forum/forumpost/7517680ef9684c57 */
      if( g.zSockOwner ){
        file_set_owner(g.zSockName, listener, g.zSockOwner);
      }
    }else{
      rc = bind(listener, (struct sockaddr*)&inaddr, sizeof(inaddr));
    }
    if( rc<0 ){
      close(listener);
      iPort++;
      continue;
    }
    break;
  }
  if( iPort>mxPort ){
    if( flags & HTTP_SERVER_UNIXSOCKET ){
      fossil_fatal("unable to listen on unix socket %s", zIpAddr);
    if( mnPort==mxPort ){
      fossil_fatal("unable to open listening socket on ports %d", mnPort);
    }else if( mnPort==mxPort ){
      fossil_fatal("unable to open listening socket on port %d", mnPort);
    }else{
      fossil_fatal("unable to open listening socket on any"
                   " port in the range %d..%d", mnPort, mxPort);
    }
  }
  if( iPort>mxPort ) return 1;
  listen(listener,10);
  if( iPort>mnPort ){
    printf("Listening for HTTP requests on TCP port %d\n", iPort);
  if( flags & HTTP_SERVER_UNIXSOCKET ){
    fossil_print("Listening for %s requests on unix socket %s\n",
       (flags & HTTP_SERVER_SCGI)!=0 ? "SCGI" :
          g.httpUseSSL?"TLS-encrypted HTTPS":"HTTP",  g.zSockName);
  }else{
    fossil_print("Listening for %s requests on TCP port %d\n",
    fflush(stdout);
       (flags & HTTP_SERVER_SCGI)!=0 ? "SCGI" :
          g.httpUseSSL?"TLS-encrypted HTTPS":"HTTP",  iPort);
  }
  fflush(stdout);
  if( zBrowser ){
    zBrowser = mprintf(zBrowser, iPort);
    system(zBrowser);
  }
  if( zBrowser && (flags & HTTP_SERVER_UNIXSOCKET)==0 ){
    assert( strstr(zBrowser,"%d")!=0 );
    zBrowser = mprintf(zBrowser /*works-like:"%d"*/, iPort);
#if defined(__CYGWIN__)
    /* On Cygwin, we can do better than "echo" */
    if( fossil_strncmp(zBrowser, "echo ", 5)==0 ){
      wchar_t *wUrl = fossil_utf8_to_unicode(zBrowser+5);
      wUrl[wcslen(wUrl)-2] = 0; /* Strip terminating " &" */
      if( (size_t)ShellExecuteW(0, L"open", wUrl, 0, 0, 1)<33 ){
        fossil_warning("cannot start browser\n");
      }
    }else
#endif
    if( fossil_system(zBrowser)<0 ){
      fossil_warning("cannot start browser: %s\n", zBrowser);
    }
  }
  while( 1 ){
#if FOSSIL_MAX_CONNECTIONS>0
    if( nchildren>MAX_PARALLEL ){
    while( nchildren>=FOSSIL_MAX_CONNECTIONS ){
      /* Slow down if connections are arriving too fast */
      sleep( nchildren-MAX_PARALLEL );
      if( wait(0)>=0 ) nchildren--;
    }
#endif
    delay.tv_sec = 60;
    delay.tv_usec = 0;
    delay.tv_sec = 0;
    delay.tv_usec = 100000;
    FD_ZERO(&readfds);
    assert( listener>=0 );
    FD_SET( listener, &readfds);
    if( select( listener+1, &readfds, 0, 0, &delay) ){
    select( listener+1, &readfds, 0, 0, &delay);
    if( FD_ISSET(listener, &readfds) ){
      lenaddr = sizeof(inaddr);
      connection = accept(listener, (struct sockaddr*)&inaddr,
      connection = accept(listener, (struct sockaddr*)&inaddr, &lenaddr);
                                    (socklen_t*) &lenaddr);
      if( connection>=0 ){
        if( flags & HTTP_SERVER_NOFORK ){
          child = 0;
        }else{
        child = fork();
          child = fork();
        }
        if( child!=0 ){
          if( child>0 ) nchildren++;
          if( child>0 ){
            nchildren++;
            nRequest++;
          }
          close(connection);
        }else{
          int nErr = 0, fd;
          g.zSockName = 0 /* avoid deleting the socket via atexit() */;
          close(0);
          dup(connection);
          fd = dup(connection);
          if( fd!=0 ) nErr++;
          close(1);
          dup(connection);
          if( !g.fHttpTrace && !g.fSqlTrace ){
          fd = dup(connection);
          if( fd!=1 ) nErr++;
          if( 0 && !g.fAnyTrace ){
            close(2);
            dup(connection);
            fd = dup(connection);
            if( fd!=2 ) nErr++;
          }
          close(connection);
          g.nPendingRequest = nchildren+1;
          g.nRequest = nRequest+1;
          return 0;
          return nErr;
        }
      }
    }
    /* Bury dead children */
    if( nchildren ){
    while( waitpid(0, 0, WNOHANG)>0 ){
      nchildren--;
    }
  }
  /* NOT REACHED */  
  exit(1);
      while(1){
        int iStatus = 0;
        pid_t x = waitpid(-1, &iStatus, WNOHANG);
        if( x<=0 ) break;
        if( WIFSIGNALED(iStatus) && g.fAnyTrace ){
          fprintf(stderr, "/***** Child %d exited on signal %d (%s) *****/\n",
                  x, WTERMSIG(iStatus), strsignal(WTERMSIG(iStatus)));
        }
        nchildren--;
      }
    }
  }
  /* NOT REACHED */
  fossil_exit(1);
#endif
  /* NOT REACHED */
  return 0;
}


/*
** Name of days and months.
*/
static const char *azDays[] =
static const char *const azDays[] =
    {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", 0};
static const char *azMonths[] =
static const char *const azMonths[] =
    {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
     "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 0};


/*
** Returns an RFC822-formatted time string suitable for HTTP headers.
** The timezone is always GMT.  The value returned is always a
** string obtained from mprintf() and must be freed using free() to
** avoid a memory leak.
** string obtained from mprintf() and must be freed using fossil_free()
** to avoid a memory leak.
**
** See http://www.faqs.org/rfcs/rfc822.html, section 5
** and http://www.faqs.org/rfcs/rfc2616.html, section 3.3.
*/
char *cgi_rfc822_datestamp(time_t now){
  struct tm *pTm;
  pTm = gmtime(&now);
  if( pTm==0 ){
    return mprintf("");
  }else{
    return mprintf("%s, %d %s %02d %02d:%02d:%02d GMT",
    return mprintf("%s, %d %s %02d %02d:%02d:%02d +0000",
                   azDays[pTm->tm_wday], pTm->tm_mday, azMonths[pTm->tm_mon],
                   pTm->tm_year+1900, pTm->tm_hour, pTm->tm_min, pTm->tm_sec);
  }
}

/*
** Returns an ISO8601-formatted time string suitable for debugging
** purposes.
**
** The value returned is always a string obtained from mprintf() and must
** be freed using fossil_free() to avoid a memory leak.
*/
char *cgi_iso8601_datestamp(void){
  struct tm *pTm;
  time_t now = time(0);
  pTm = gmtime(&now);
  if( pTm==0 ){
    return mprintf("");
  }else{
    return mprintf("%04d-%02d-%02d %02d:%02d:%02d",
                   pTm->tm_year+1900, pTm->tm_mon+1, pTm->tm_mday,
                   pTm->tm_hour, pTm->tm_min, pTm->tm_sec);
  }
}

/*
** COMMAND: test-date
**
** Show the current date and time in both RFC822 and ISO8601.
*/
void test_date(void){
  fossil_print("%z = ", cgi_iso8601_datestamp());
  fossil_print("%z\n", cgi_rfc822_datestamp(time(0)));
}

/*
** Parse an RFC822-formatted timestamp as we'd expect from HTTP and return
** a Unix epoch time. <= zero is returned on failure.
**
** Note that this won't handle all the _allowed_ HTTP formats, just the
** most popular one (the one generated by cgi_rfc822_datestamp(), actually).
*/
time_t cgi_rfc822_parsedate(const char *zDate){
  struct tm t;
  char zIgnore[16];
  char zMonth[16];

  memset(&t, 0, sizeof(t));
  if( 7==sscanf(zDate, "%12[A-Za-z,] %d %12[A-Za-z] %d %d:%d:%d", zIgnore,
  int mday, mon, year, yday, hour, min, sec;
  char zIgnore[4];
  char zMonth[4];
  static const char *const azMonths[] =
    {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
     "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 0};
  if( 7==sscanf(zDate, "%3[A-Za-z], %d %3[A-Za-z] %d %d:%d:%d", zIgnore,
                       &t.tm_mday, zMonth, &t.tm_year, &t.tm_hour, &t.tm_min,
                       &t.tm_sec)){

    if( t.tm_year > 1900 ) t.tm_year -= 1900;
    for(t.tm_mon=0; azMonths[t.tm_mon]; t.tm_mon++){
      if( !strncasecmp( azMonths[t.tm_mon], zMonth, 3 )){
        return mkgmtime(&t);
                       &mday, zMonth, &year, &hour, &min, &sec)){
    if( year > 1900 ) year -= 1900;
    for(mon=0; azMonths[mon]; mon++){
      if( !fossil_strncmp( azMonths[mon], zMonth, 3 )){
        int nDay;
        int isLeapYr;
      }
    }
  }

        static int priorDays[] =
  return 0;
}

         {  0, 31, 59, 90,120,151,181,212,243,273,304,334 };
/*
** Convert a struct tm* that represents a moment in UTC into the number
** of seconds in 1970, UTC.
*/
time_t mkgmtime(struct tm *p){
  time_t t;
  int nDay;
  int isLeapYr;
  /* Days in each month:       31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 */
  static int priorDays[]   = {  0, 31, 59, 90,120,151,181,212,243,273,304,334 };
  if( p->tm_mon<0 ){
    int nYear = (11 - p->tm_mon)/12;
    p->tm_year -= nYear;
    p->tm_mon += nYear*12;
  }else if( p->tm_mon>11 ){
    p->tm_year += p->tm_mon/12;
    p->tm_mon %= 12;
  }
  isLeapYr = p->tm_year%4==0 && (p->tm_year%100!=0 || (p->tm_year+300)%400==0);
  p->tm_yday = priorDays[p->tm_mon] + p->tm_mday - 1;
  if( isLeapYr && p->tm_mon>1 ) p->tm_yday++;
        if( mon<0 ){
          int nYear = (11 - mon)/12;
          year -= nYear;
          mon += nYear*12;
        }else if( mon>11 ){
          year += mon/12;
          mon %= 12;
        }
        isLeapYr = year%4==0 && (year%100!=0 || (year+300)%400==0);
        yday = priorDays[mon] + mday - 1;
        if( isLeapYr && mon>1 ) yday++;
  nDay = (p->tm_year-70)*365 + (p->tm_year-69)/4 -p->tm_year/100 + 
         (p->tm_year+300)/400 + p->tm_yday;
  t = ((nDay*24 + p->tm_hour)*60 + p->tm_min)*60 + p->tm_sec;
  return t;
        nDay = (year-70)*365 + (year-69)/4 - year/100 + (year+300)/400 + yday;
        return ((time_t)(nDay*24 + hour)*60 + min)*60 + sec;
      }
    }
  }
  return 0;
}

/*
** Check the objectTime against the If-Modified-Since request header. If the
** object time isn't any newer than the header, we immediately send back
** a 304 reply and exit.
*/
void cgi_modified_since(time_t objectTime){
  const char *zIf = P("HTTP_IF_MODIFIED_SINCE");
  if( zIf==0 ) return;
  if( objectTime > cgi_rfc822_parsedate(zIf) ) return;
  cgi_set_status(304,"Not Modified");
  cgi_reset_content();
  cgi_reply();
  exit(0);
  fossil_exit(0);
}

/*
** Check to see if the remote client is SSH and return
** its IP or return default
*/
const char *cgi_ssh_remote_addr(const char *zDefault){
  char *zIndex;
  const char *zSshConn = fossil_getenv("SSH_CONNECTION");

  if( zSshConn && zSshConn[0] ){
    char *zSshClient = fossil_strdup(zSshConn);
    if( (zIndex = strchr(zSshClient,' '))!=0 ){
      zSshClient[zIndex-zSshClient] = '\0';
      return zSshClient;
    }
  }
  return zDefault;
}

/*
** Return true if information is coming from the loopback network.
*/
int cgi_is_loopback(const char *zIpAddr){
  return fossil_strcmp(zIpAddr, "127.0.0.1")==0 ||
         fossil_strcmp(zIpAddr, "::ffff:127.0.0.1")==0 ||
         fossil_strcmp(zIpAddr, "::1")==0;
}

/*
** Return true if the HTTP request is likely to be from a small-screen
** mobile device.
**
** The returned value is a guess.  Use it only for setting up defaults.
*/
int cgi_from_mobile(void){
  const char *zAgent = P("HTTP_USER_AGENT");
  if( zAgent==0 ) return 0;
  if( sqlite3_strglob("*iPad*", zAgent)==0 ) return 0;
  return sqlite3_strlike("%mobile%", zAgent, 0)==0;
}

/*
** Look for query or POST parameters that:
**
**    (1)  Have not been used
**    (2)  Appear to be malicious attempts to break into or otherwise
**         harm the system, for example via SQL injection
**
** If any such parameters are seen, a 418 ("I'm a teapot") return is
** generated and processing aborts - this routine does not return.
**
** When Fossil is launched via CGI from althttpd, the 418 return signals
** the webserver to put the requestor IP address into "timeout", blocking
** subsequent requests for 5 minutes.
**
** Fossil is not subject to any SQL injections, as far as anybody knows.
** This routine is not necessary for the security of the system (though
** an extra layer of security never hurts).  The main purpose here is
** to shutdown malicious attack spiders and prevent them from burning
** lots of CPU cycles and bogging down the website.  In other words, the
** objective of this routine is to help prevent denial-of-service.
**
** Usage Hint: Put a call to this routine as late in the webpage
** implementation as possible, ideally just before it begins doing
** potentially CPU-intensive computations and after all query parameters
** have been consulted.
*/
void cgi_check_for_malice(void){
  struct QParam * pParam;
  int i;
  for(i=0; i<nUsedQP; ++i){
    pParam = &aParamQP[i];
    if( 0==pParam->isFetched
     && pParam->zValue!=0
     && pParam->zName!=0
     && fossil_islower(pParam->zName[0])
    ){
      cgi_value_spider_check(pParam->zValue, pParam->zName);
    }
  }
}
Added src/chat.c.



























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement the Fossil chatroom.
**
** Initial design goals:
**
**    *   Keep it simple.  This chatroom is not intended as a competitor
**        or replacement for IRC, Discord, Telegram, Slack, etc.  The goal
**        is zero- or near-zero-configuration, not an abundance of features.
**
**    *   Intended as a place for insiders to have ephemeral conversations
**        about a project.  This is not a public gather place.  Think
**        "boardroom", not "corner pub".
**
**    *   One chatroom per repository.
**
**    *   Chat content lives in a single repository.  It is never synced.
**        Content expires and is deleted after a set interval (a week or so).
**
** Notification is accomplished using the "hanging GET" or "long poll" design
** in which a GET request is issued but the server does not send a reply until
** new content arrives.  Newer Web Sockets and Server Sent Event protocols are
** more elegant, but are not compatible with CGI, and would thus complicate
** configuration.
*/
#include "config.h"
#include <assert.h>
#include "chat.h"

/*
** Outputs JS code to initialize a list of chat alert audio files for
** use by the chat front-end client. A handful of builtin files
** (from alerts/\*.wav) and all unversioned files matching
** alert-sounds/\*.{mp3,ogg,wav} are included.
*/
static void chat_emit_alert_list(void){
  unsigned int i;
  const char * azBuiltins[] = {
  "builtin/alerts/plunk.wav",
  "builtin/alerts/bflat2.wav",
  "builtin/alerts/bflat3.wav",
  "builtin/alerts/bloop.wav"
  };
  CX("window.fossil.config.chat.alerts = [\n");
  for(i=0; i < sizeof(azBuiltins)/sizeof(azBuiltins[0]); ++i){
    CX("%s%!j", i ? ", " : "", azBuiltins[i]);
  }
  if( db_table_exists("repository","unversioned") ){
    Stmt q = empty_Stmt;
    db_prepare(&q, "SELECT 'uv/'||name FROM unversioned "
               "WHERE content IS NOT NULL "
               "AND (name LIKE 'alert-sounds/%%.wav' "
               "OR name LIKE 'alert-sounds/%%.mp3' "
               "OR name LIKE 'alert-sounds/%%.ogg')");
    while(SQLITE_ROW==db_step(&q)){
      CX(", %!j", db_column_text(&q, 0));
    }
    db_finalize(&q);
  }
  CX("\n];\n");
}

/* Settings that can be used to control chat */
/*
** SETTING: chat-initial-history    width=10 default=50
**
** If this setting has an integer value of N, then when /chat first
** starts up it initializes the screen with the N most recent chat
** messages.  If N is zero, then all chat messages are loaded.
*/
/*
** SETTING: chat-keep-count    width=10 default=50
**
** When /chat is cleaning up older messages, it will always keep
** the most recent chat-keep-count messages, even if some of those
** messages are older than the discard threshold.  If this value
** is zero, then /chat is free to delete all historic messages once
** they are old enough.
*/
/*
** SETTING: chat-keep-days    width=10 default=7
**
** The /chat subsystem will try to discard messages that are older then
** chat-keep-days.  The value of chat-keep-days can be a floating point
** number.  So, for example, if you only want to keep chat messages for
** 12 hours, set this value to 0.5.
**
** A value of 0.0 or less means that messages are retained forever.
*/
/*
** SETTING: chat-inline-images    boolean default=on
**
** Specifies whether posted images in /chat should default to being
** displayed inline or as downloadable links. Each chat user can
** change this value for their current chat session in the UI.
*/
/*
** SETTING: chat-poll-timeout    width=10 default=420
**
** On an HTTP request to /chat-poll, if there is no new content available,
** the reply is delayed waiting for new content to arrive.  (This is the
** "long poll" strategy of event delivery to the client.)  This setting
** determines approximately how long /chat-poll will delay before giving
** up and returning an empty reply.  The default value is about 7 minutes,
** which works well for Fossil behind the althttpd web server.  Other
** server environments may choose a longer or shorter delay.
**
** For maximum efficiency, it is best to choose the longest delay that
** does not cause timeouts in intermediate proxies or web server.
*/
/*
** SETTING: chat-alert-sound     width=10
**
** This is the name of the builtin sound file to use for the alert tone.
** The value must be the name of a builtin WAV file.
*/
/*
** SETTING: chat-timeline-user    width=10
**
** If this setting is defined and is not an empty string, then
** timeline events are posted to the chat as they arrive. The synthesized
** chat messages appear to come from the user identified by this setting,
** not the user on the timeline event.
**
** All chat messages that come from the chat-timeline-user are
** interpreted as text/x-fossil-wiki instead of as text/x-markdown.
** For this reason, the chat-timeline-user name should probably not be
** a real user.
*/
/*
** WEBPAGE: chat loadavg-exempt
**
** Start up a browser-based chat session.
**
** This is the main page that humans use to access the chatroom.  Simply
** point a web-browser at /chat and the screen fills with the latest
** chat messages, and waits for new ones.
**
** Other /chat-OP pages are used by XHR requests from this page to
** send new chat message, delete older messages, or poll for changes.
*/
void chat_webpage(void){
  char *zAlert;
  char *zProjectName;
  char * zInputPlaceholder0;  /* Common text input placeholder value */

  login_check_credentials();
  if( !g.perm.Chat ){
    login_needed(g.anon.Chat);
    return;
  }
  zAlert = mprintf("%s/builtin/%s", g.zBaseURL,
                db_get("chat-alert-sound","alerts/plunk.wav"));
  zProjectName = db_get("project-name","Unnamed project");
  zInputPlaceholder0 =
    mprintf("Type markdown-formatted message for %h.", zProjectName);
  style_set_current_feature("chat");
  style_header("Chat");
  @ <div id='chat-input-area'>
  @   <div id='chat-input-line-wrapper' class='compact'>
  @     <input type="text" id="chat-input-field-single" \
  @      data-placeholder0="%h(zInputPlaceholder0)" \
  @      data-placeholder="%h(zInputPlaceholder0)" \
  @      class="chat-input-field"></input>
  @     <textarea id="chat-input-field-multi" \
  @      data-placeholder0="%h(zInputPlaceholder0)" \
  @      data-placeholder="%h(zInputPlaceholder0)" \
  @      class="chat-input-field hidden"></textarea>
  @     <div contenteditable id="chat-input-field-x" \
  @      data-placeholder0="%h(zInputPlaceholder0)" \
  @      data-placeholder="%h(zInputPlaceholder0)" \
  @      class="chat-input-field hidden"></div>
  @     <div id='chat-buttons-wrapper'>
  @       <span class='cbutton' id="chat-button-preview" \
  @         title="Preview message (Shift-Enter)">&#128065;</span>
  @       <span class='cbutton' id="chat-button-search" \
  @         title="Search chat history">&#x1f50d;</span>
  @       <span class='cbutton' id="chat-button-attach" \
  @         title="Attach file to message">&#x1f4ce;</span>
  @       <span class='cbutton' id="chat-button-settings" \
  @         title="Configure chat">&#9881;</span>
  @       <span class='cbutton' id="chat-button-submit" \
  @         title="Send message (Ctrl-Enter)">&#128228;</span>
  @     </div>
  @   </div>
  @   <div id='chat-input-file-area'>
  @     <div class='file-selection-wrapper hidden'>
  @       <input type="file" name="file" id="chat-input-file">
  @     </div>
  @     <div id="chat-drop-details"></div>
  @   </div>
  @ </div>
  @ <div id='chat-user-list-wrapper' class='hidden'>
  @   <div class='legend'>
  @     <span class='help-buttonlet'>
  @      Users who have messages in the currently-loaded list.<br><br>
  @      <strong>Tap a user name</strong> to filter messages
  @      on that user and tap again to clear the filter.<br><br>
  @      <strong>Tap the title</strong> of this widget to toggle
  @      the list on and off.
  @     </span>
  @     <span>Active users (sorted by last message time)</span>
  @   </div>
  @   <div id='chat-user-list'></div>
  @ </div>
  @ <div id='chat-preview' class='hidden chat-view'>
  @  <header>Preview: (<a href='%R/md_rules' target='_blank'>markdown reference</a>)</header>
  @  <div id='chat-preview-content'></div>
  @  <div class='button-bar'><button class='action-close'>Close Preview</button></div>
  @ </div>
  @ <div id='chat-config' class='hidden chat-view'>
  @ <div id='chat-config-options'></div>
    /* ^^^populated client-side */
  @ <div class='button-bar'><button class='action-close'>Close Settings</button></div>
  @ </div>
  @ <div id='chat-search' class='hidden chat-view'>
  @   <div id='chat-search-content'></div>
      /* ^^^populated client-side */
  @   <div class='button-bar'>
  @     <button class='action-clear'>Clear results</button>
  @     <button class='action-close'>Close Search</button>
  @   </div>
  @ </div>
  @ <div id='chat-messages-wrapper' class='chat-view'>
  /* New chat messages get inserted immediately after this element */
  @ <span id='message-inject-point'></span>
  @ </div>
  fossil_free(zProjectName);
  fossil_free(zInputPlaceholder0);
  builtin_fossil_js_bundle_or("popupwidget", "storage", "fetch",
                              "pikchr", "confirmer", "copybutton",
                              NULL);
  /* Always in-line the javascript for the chat page */
  @ <script nonce="%h(style_nonce())">/* chat.c:%d(__LINE__) */
  /* We need an onload handler to ensure that window.fossil is
     initialized before the chat init code runs. */
  @ window.addEventListener('load', function(){
  @ document.body.classList.add('chat');
  @ /*^^^for skins which add their own BODY tag */;
  @ window.fossil.config.chat = {
  @   fromcli: %h(PB("cli")?"true":"false"),
  @   alertSound: "%h(zAlert)",
  @   initSize: %d(db_get_int("chat-initial-history",50)),
  @   imagesInline: !!%d(db_get_boolean("chat-inline-images",1))
  @ };
  ajax_emit_js_preview_modes(0);
  chat_emit_alert_list();
  @ }, false);
  @ </script>
  builtin_request_js("fossil.page.chat.js");
  style_finish_page();
}

/*
** Definition of repository tables used by chat
*/
static const char zChatSchema1[] =
@ CREATE TABLE repository.chat(
@   msgid INTEGER PRIMARY KEY AUTOINCREMENT,
@   mtime JULIANDAY,  -- Time for this entry - Julianday Zulu
@   lmtime TEXT,      -- Client YYYY-MM-DDZHH:MM:SS when message originally sent
@   xfrom TEXT,       -- Login of the sender
@   xmsg  TEXT,       -- Raw, unformatted text of the message
@   fname TEXT,       -- Filename of the uploaded file, or NULL
@   fmime TEXT,       -- MIMEType of the upload file, or NULL
@   mdel INT,         -- msgid of another message to delete
@   file  BLOB        -- Text of the uploaded file, or NULL
@ );
;


/*
** Create or rebuild the /chat search index. Requires that the
** repository.chat table exists. If bForce is true, it will drop the
** chatfts1 table and recreate/reindex it. If bForce is 0, it will
** only index the chat content if the chatfts1 table does not already
** exist.
*/
void chat_rebuild_index(int bForce){
  if( bForce!=0 ){
    db_multi_exec("DROP TABLE IF EXISTS chatfts1");
  }
  if( bForce!=0 || !db_table_exists("repository", "chatfts1") ){
    const int tokType = search_tokenizer_type(0);
    const char *zTokenizer = search_tokenize_arg_for_type(
      tokType==FTS5TOK_NONE ? FTS5TOK_PORTER : tokType
      /* Special case: if fts search is disabled for the main repo
      ** content, use a default tokenizer here. */
    );
    assert( zTokenizer && zTokenizer[0] );
    db_multi_exec(
      "CREATE VIRTUAL TABLE repository.chatfts1 USING fts5("
      "    xmsg, content=chat, content_rowid=msgid%s"
      ");"
      "INSERT INTO repository.chatfts1(chatfts1) VALUES('rebuild');",
      zTokenizer/*safe-for-%s*/
    );
  }
}

/*
** Make sure the repository data tables used by chat exist.  Create
** them if they do not. Set up TEMP triggers (if needed) to update the
** chatfts1 table as the chat table is updated.
*/
static void chat_create_tables(void){
  if( !db_table_exists("repository","chat") ){
    db_multi_exec(zChatSchema1/*works-like:""*/);
  }else if( !db_table_has_column("repository","chat","lmtime") ){
    if( !db_table_has_column("repository","chat","mdel") ){
      db_multi_exec("ALTER TABLE chat ADD COLUMN mdel INT");
    }
    db_multi_exec("ALTER TABLE chat ADD COLUMN lmtime TEXT");
  }
  chat_rebuild_index(0);
  db_multi_exec(
    "CREATE TEMP TRIGGER IF NOT EXISTS chat_ai AFTER INSERT ON chat BEGIN "
    "  INSERT INTO chatfts1(rowid, xmsg) VALUES(new.msgid, new.xmsg);"
    "END;"
    "CREATE TEMP TRIGGER IF NOT EXISTS chat_ad AFTER DELETE ON chat BEGIN "
    "  INSERT INTO chatfts1(chatfts1, rowid, xmsg) "
    "    VALUES('delete', old.msgid, old.xmsg);"
    "END;"
  );
}

/*
** Delete old content from the chat table.
*/
static void chat_purge(void){
   int mxCnt = db_get_int("chat-keep-count",50);
   double mxDays = atof(db_get("chat-keep-days","7"));
   double rAge;
   int msgid;
   rAge = db_double(0.0, "SELECT julianday('now')-mtime FROM chat"
                         " ORDER BY msgid LIMIT 1");
   if( rAge>mxDays ){
     msgid = db_int(0, "SELECT msgid FROM chat"
                       " ORDER BY msgid DESC LIMIT 1 OFFSET %d", mxCnt);
     if( msgid>0 ){
       Stmt s;
       db_multi_exec("PRAGMA secure_delete=ON;");
       db_prepare(&s,
             "DELETE FROM chat WHERE mtime<julianday('now')-:mxage"
             " AND msgid<%d", msgid);
       db_bind_double(&s, ":mxage", mxDays);
       db_step(&s);
       db_finalize(&s);
     }
   }
}

/*
** Sets the current CGI response type to application/json then emits a
** JSON-format error message object. If fAsMessageList is true then
** the object is output using the list format described for chat-poll,
** else it is emitted as a single object in that same format.
*/
static void chat_emit_permissions_error(int fAsMessageList){
  char * zTime = cgi_iso8601_datestamp();
  cgi_set_content_type("application/json");
  if(fAsMessageList){
    CX("{\"msgs\":[{");
  }else{
    CX("{");
  }
  CX("\"isError\": true, \"xfrom\": null,");
  CX("\"mtime\": %!j, \"lmtime\": %!j,", zTime, zTime);
  CX("\"xmsg\": \"Missing permissions or not logged in. "
     "Try <a href='%R/login?g=chat'>logging in</a>.\"");
  if(fAsMessageList){
    CX("}]}");
  }else{
    CX("}");
  }
  fossil_free(zTime);
}

/*
** WEBPAGE: chat-send hidden loadavg-exempt
**
** This page receives (via XHR) a new chat-message and/or a new file
** to be entered into the chat history.
**
** On success it responds with an empty response: the new message
** should be fetched via /chat-poll. On error, e.g. login expiry,
** it emits a JSON response in the same form as described for
** /chat-poll errors, but as a standalone object instead of a
** list of objects.
**
** Requests to this page should be POST, not GET.  POST parameters
** include:
**
**    msg        The (Markdown) text of the message to be sent
**
**    file       The content of the file attachment
**
**    lmtime     ISO-8601 formatted date-time string showing the local time
**               of the sender.
**
** At least one of the "msg" or "file" POST parameters must be provided.
*/
void chat_send_webpage(void){
  int nByte;
  const char *zMsg;
  const char *zUserName;
  login_check_credentials();
  if( 0==g.perm.Chat ) {
    chat_emit_permissions_error(0);
    return;
  }
  zUserName = (g.zLogin && g.zLogin[0]) ? g.zLogin : "nobody";
  nByte = atoi(PD("file:bytes","0"));
  zMsg = PD("msg","");
  db_begin_write();
  db_unprotect(PROTECT_READONLY);
  chat_create_tables();
  chat_purge();
  if( nByte==0 ){
    if( zMsg[0] ){
      db_multi_exec(
        "INSERT INTO chat(mtime,lmtime,xfrom,xmsg)"
        "VALUES(julianday('now'),%Q,%Q,%Q)",
        P("lmtime"), zUserName, zMsg
      );
    }
  }else{
    Stmt q;
    Blob b;
    db_prepare(&q,
        "INSERT INTO chat(mtime,lmtime,xfrom,xmsg,file,fname,fmime)"
        "VALUES(julianday('now'),%Q,%Q,%Q,:file,%Q,%Q)",
        P("lmtime"), zUserName, zMsg, PD("file:filename",""),
        PD("file:mimetype","application/octet-stream"));
    blob_init(&b, P("file"), nByte);
    db_bind_blob(&q, ":file", &b);
    db_step(&q);
    db_finalize(&q);
    blob_reset(&b);
  }
  db_commit_transaction();
  db_protect_pop();
}

/*
** This routine receives raw (user-entered) message text and
** transforms it into HTML that is safe to insert using innerHTML. As
** of 2021-09-19, it does so by using wiki_convert() or
** markdown_to_html() to convert wiki/markdown-formatted zMsg to HTML.
**
** Space to hold the returned string is obtained from fossil_malloc()
** and must be freed by the caller.
*/
static char *chat_format_to_html(const char *zMsg, int isWiki){
  Blob out;
  blob_init(&out, "", 0);
  if( zMsg==0 || zMsg[0]==0 ){
    /* No-op */
  }else if( isWiki ){
    /* Used for chat-timeline-user.  The zMsg is text/x-fossil-wiki. */
    Blob bIn;
    blob_init(&bIn, zMsg, (int)strlen(zMsg));
    wiki_convert(&bIn, &out, WIKI_INLINE);
  }else{
    /* The common case:  zMsg is text/x-markdown */
    Blob bIn;
    blob_init(&bIn, zMsg, (int)strlen(zMsg));
    markdown_to_html(&bIn, NULL, &out);
  }
  return blob_str(&out);
}

/*
** COMMAND: test-chat-formatter
**
** Usage: %fossil test-chat-formatter ?OPTIONS? STRING ...
**
** Transform each argument string into HTML that will display the
** chat message.  This is used to test the formatter and to verify
** that a malicious message text will not cause HTML or JS injection
** into the chat display in a browser.
**
** Options:
**
**     -w|--wiki     Assume fossil wiki format instead of markdown
*/
void chat_test_formatter_cmd(void){
  int i;
  char *zOut;
  int const isWiki = find_option("w","wiki",0)!=0;
  db_find_and_open_repository(0,0);
  g.perm.Hyperlink = 1;
  for(i=2; i<g.argc; i++){
    zOut = chat_format_to_html(g.argv[i], isWiki);
    fossil_print("[%d]: %s\n", i-1, zOut);
    fossil_free(zOut);
  }
}

/*
** The SQL statement passed as the first argument should return zero or
** more rows of data, each of which represents a single message from the
** "chat" table. The rows returned should be similar to those returned
** by:
**
**     SELECT msgid, 
**            datetime(mtime), 
**            xfrom, 
**            xmsg, 
**            octet_length(file),"
**            fname, 
**            fmime, 
**            mdel, 
**            lmtime
**     FROM chat;
**
** This function loops through all rows returned by statement p, adding
** a record to the JSON stored in argument pJson for each. See comments 
** above function chat_poll_webpage() for a description of the JSON records
** added to pJson.
*/
static int chat_poll_rowstojson(
  Stmt *p,                        /* Statement to read rows from */
  int bRaw,                       /* True to return raw format xmsg */
  Blob *pJson                     /* Append json array entries here */
){
  int cnt = 0;
  const char *zChatUser = db_get("chat-timeline-user",0);
  while( db_step(p)==SQLITE_ROW ){
    int isWiki = 0;             /* True if chat message is x-fossil-wiki */
    int id = db_column_int(p, 0);
    const char *zDate = db_column_text(p, 1);
    const char *zFrom = db_column_text(p, 2);
    const char *zRawMsg = db_column_text(p, 3);
    int nByte = db_column_int(p, 4);
    const char *zFName = db_column_text(p, 5);
    const char *zFMime = db_column_text(p, 6);
    int iToDel = db_column_int(p, 7);
    const char *zLMtime = db_column_text(p, 8);
    char *zMsg;
    if(cnt++){
      blob_append(pJson, ",\n", 2);
    }
    blob_appendf(pJson, "{\"msgid\":%d,", id);
    blob_appendf(pJson, "\"mtime\":\"%.10sT%sZ\",", zDate, zDate+11);
    if( zLMtime && zLMtime[0] ){
      blob_appendf(pJson, "\"lmtime\":%!j,", zLMtime);
    }
    blob_append(pJson, "\"xfrom\":", -1);
    if(zFrom){
      blob_appendf(pJson, "%!j,", zFrom);
      isWiki = fossil_strcmp(zFrom,zChatUser)==0;
    }else{
      /* see https://fossil-scm.org/forum/forumpost/e0be0eeb4c */
      blob_appendf(pJson, "null,");
      isWiki = 0;
    }
    blob_appendf(pJson, "\"uclr\":%!j,",
        isWiki ? "transparent" : user_color(zFrom ? zFrom : "nobody"));

    if(bRaw){
      blob_appendf(pJson, "\"xmsg\":%!j,", zRawMsg);
    }else{
      zMsg = chat_format_to_html(zRawMsg ? zRawMsg : "", isWiki);
      blob_appendf(pJson, "\"xmsg\":%!j,", zMsg);
      fossil_free(zMsg);
    }

    if( nByte==0 ){
      blob_appendf(pJson, "\"fsize\":0");
    }else{
      blob_appendf(pJson, "\"fsize\":%d,\"fname\":%!j,\"fmime\":%!j",
          nByte, zFName, zFMime);
    }

    if( iToDel ){
      blob_appendf(pJson, ",\"mdel\":%d}", iToDel);
    }else{
      blob_append(pJson, "}", 1);
    }
  }
  db_reset(p);

  return cnt;
}

/*
** WEBPAGE: chat-poll hidden loadavg-exempt
**
** The chat page generated by /chat using an XHR to this page to
** request new chat content.  A typical invocation is:
**
**     /chat-poll/N
**     /chat-poll?name=N
**
** The "name" argument should begin with an integer which is the largest
** "msgid" that the chat page currently holds. If newer content is
** available, this routine returns that content straight away. If no new
** content is available, this webpage blocks until the new content becomes
** available.  In this way, the system implements "hanging-GET" or "long-poll"
** style event notification. If no new content arrives after a delay of
** approximately chat-poll-timeout seconds (default: 420), then reply is
** sent with an empty "msg": field.
**
** If N is negative, then the return value is the N most recent messages.
** Hence a request like /chat-poll/-100 can be used to initialize a new
** chat session to just the most recent messages.
**
** Some webservers (althttpd) do not allow a term of the URL path to
** begin with "-".  Then /chat-poll/-100 cannot be used.  Instead you
** have to say "/chat-poll?name=-100".
**
** If the integer parameter "before" is passed in, it is assumed that
** the client is requesting older messages, up to (but not including)
** that message ID, in which case the next-oldest "n" messages
** (default=chat-initial-history setting, equivalent to n=0) are
** returned (negative n fetches all older entries). The client then
** needs to take care to inject them at the end of the history rather
** than the same place new messages go.
**
** If "before" is provided, "name" is ignored.
**
** If "raw" is provided, the "xmsg" text is sent back as-is, in
** markdown format, rather than being HTML-ized. This is not used or
** supported by fossil's own chat client but is intended for 3rd-party
** clients. (Specifically, for Brad Harder's curses-based client.)
**
** The reply from this webpage is JSON that describes the new content.
** Format of the json:
**
** |    {
** |      "msgs":[
** |        {
** |           "msgid": integer // message id
** |           "mtime": text    // When sent: YYYY-MM-DDTHH:MM:SSZ
** |           "lmtime: text    // Sender's client-side YYYY-MM-DDTHH:MM:SS
** |           "xfrom": text    // Login name of sender
** |           "uclr":  text    // Color string associated with the user
** |           "xmsg":  text    // HTML text of the message
** |           "fsize": integer // file attachment size in bytes
** |           "fname": text    // Name of file attachment
** |           "fmime": text    // MIME-type of file attachment
** |           "mdel":  integer // message id of prior message to delete
** |        }
** |      ]
** |    }
**
** The "fname" and "fmime" fields are only present if "fsize" is greater
** than zero.  The "xmsg" field may be an empty string if "fsize" is zero.
**
** The "msgid" values will be in increasing order.
**
** The "mdel" will only exist if "xmsg" is an empty string and "fsize" is zero.
**
** The "lmtime" value might be unknown, in which case it is omitted.
**
** The messages are ordered oldest first unless "before" is provided, in which
** case they are sorted newest first (to facilitate the client-side UI update).
**
** As a special case, if this routine encounters an error, e.g. the user's
** permissions cannot be verified because their login cookie expired, the
** request returns a slightly modified structure:
**
** |    {
** |      "msgs":[
** |        {
** |          "isError": true,
** |          "xfrom": null,
** |          "xmsg": "error details"
** |          "mtime": as above,
** |          "ltime": same as mtime
** |        }
** |      ]
** |    }
**
** If the client gets such a response, it should display the message
** in a prominent manner and then stop polling for new messages.
*/
void chat_poll_webpage(void){
  Blob json;                  /* The json to be constructed and returned */
  sqlite3_int64 dataVersion;  /* Data version.  Used for polling. */
  const int iDelay = 1000;    /* Delay until next poll (milliseconds) */
  int nDelay;                 /* Maximum delay.*/
  int msgid = atoi(PD("name","0"));
  const int msgBefore = atoi(PD("before","0"));
  int nLimit = msgBefore>0 ? atoi(PD("n","0")) : 0;
  const int bRaw = P("raw")!=0;

  Blob sql = empty_blob;
  Stmt q1;
  nDelay = db_get_int("chat-poll-timeout",420);  /* Default about 7 minutes */
  login_check_credentials();
  if( !g.perm.Chat ) {
    chat_emit_permissions_error(1);
    return;
  }
  chat_create_tables();
  cgi_set_content_type("application/json");
  dataVersion = db_int64(0, "PRAGMA data_version");
  blob_append_sql(&sql,
    "SELECT msgid, datetime(mtime), xfrom, xmsg, octet_length(file),"
    "       fname, fmime, %s, lmtime"
    "  FROM chat ",
    msgBefore>0 ? "0 as mdel" : "mdel");
  if( msgid<=0 || msgBefore>0 ){
    db_begin_write();
    chat_purge();
    db_commit_transaction();
  }
  if(msgBefore>0){
    if(0==nLimit){
      nLimit = db_get_int("chat-initial-history",50);
    }
    blob_append_sql(&sql,
      " WHERE msgid<%d"
      " ORDER BY msgid DESC "
      "LIMIT %d",
      msgBefore, nLimit>0 ? nLimit : -1
    );
  }else{
    if( msgid<0 ){
      msgid = db_int(0,
            "SELECT msgid FROM chat WHERE mdel IS NOT true"
            " ORDER BY msgid DESC LIMIT 1 OFFSET %d", -msgid);
    }
    blob_append_sql(&sql,
      " WHERE msgid>%d"
      " ORDER BY msgid",
      msgid
    );
  }
  db_prepare(&q1, "%s", blob_sql_text(&sql));
  blob_reset(&sql);
  blob_init(&json, "{\"msgs\":[\n", -1);
  while( nDelay>0 ){
    int cnt = chat_poll_rowstojson(&q1, bRaw, &json);
    if( cnt || msgBefore>0 ){
      break;
    }
    sqlite3_sleep(iDelay); nDelay--;
    while( nDelay>0 ){
      sqlite3_int64 newDataVers = db_int64(0,"PRAGMA repository.data_version");
      if( newDataVers!=dataVersion ){
        dataVersion = newDataVers;
        break;
      }
      sqlite3_sleep(iDelay); nDelay--;
    }
  } /* Exit by "break" */
  db_finalize(&q1);
  blob_append(&json, "\n]}", 3);
  cgi_set_content(&json);
  return;
}


/*
** WEBPAGE: chat-query hidden loadavg-exempt
*/
void chat_query_webpage(void){
  Blob json;                  /* The json to be constructed and returned */
  Blob sql = empty_blob;
  Stmt q1;
  int nLimit = atoi(PD("n","500"));
  int iFirst = atoi(PD("i","0"));
  const char *zQuery = PD("q", "");
  i64 iMin = 0;
  i64 iMax = 0;

  login_check_credentials();
  if( !g.perm.Chat ) {
    chat_emit_permissions_error(1);
    return;
  }
  chat_create_tables();
  cgi_set_content_type("application/json");

  if( zQuery[0] ){
    iMax = db_int64(0, "SELECT max(msgid) FROM chat");
    iMin = db_int64(0, "SELECT min(msgid) FROM chat");
    if( '#'==zQuery[0] ){
      /* Assume we're looking for an exact msgid match. */
      ++zQuery;
      blob_append_sql(&sql,
        "SELECT msgid, datetime(mtime), xfrom, "
        "  xmsg, octet_length(file), fname, fmime, mdel, lmtime "
        "  FROM chat WHERE msgid=+%Q",
        zQuery
      );
    }else{
      char * zPat = search_simplify_pattern(zQuery);
      blob_append_sql(&sql,
        "SELECT * FROM ("
        "SELECT c.msgid, datetime(c.mtime), c.xfrom, "
        "  highlight(chatfts1, 0, '<span class=\"match\">', '</span>'), "
        "  octet_length(c.file), c.fname, c.fmime, c.mdel, c.lmtime "
        "  FROM chatfts1(%Q) f, chat c "
        "  WHERE f.rowid=c.msgid"
        "  ORDER BY f.rowid DESC LIMIT %d"
        ") ORDER BY 1 ASC", zPat, nLimit
      );
      fossil_free(zPat);
    }
  }else{
    blob_append_sql(&sql,
        "SELECT msgid, datetime(mtime), xfrom, "
        "  xmsg, octet_length(file), fname, fmime, mdel, lmtime"
        "  FROM chat WHERE msgid>=%d LIMIT %d",
        iFirst, nLimit
    );
  }

  db_prepare(&q1, "%s", blob_sql_text(&sql));
  blob_reset(&sql);
  blob_init(&json, "{\"msgs\":[\n", -1);
  chat_poll_rowstojson(&q1, 0, &json);
  db_finalize(&q1);
  blob_appendf(&json, "\n], \"first\":%lld, \"last\":%lld}", iMin, iMax);
  cgi_set_content(&json);
  return;
}

/*
** WEBPAGE: chat-fetch-one hidden loadavg-exempt
**
** /chat-fetch-one/N
**
** Fetches a single message with the given ID, if available.
**
** Options:
**
**   raw = the xmsg field will be returned unparsed.
**
** Response is either a single object in the format returned by
** /chat-poll (without the wrapper array) or a JSON-format error
** response, as documented for ajax_route_error().
*/
void chat_fetch_one(void){
  Blob json = empty_blob;   /* The json to be constructed and returned */
  const int fRaw = PD("raw",0)!=0;
  const int msgid = atoi(PD("name","0"));
  const char *zChatUser;
  int isWiki;
  Stmt q;
  login_check_credentials();
  if( !g.perm.Chat ) {
    chat_emit_permissions_error(0);
    return;
  }
  zChatUser = db_get("chat-timeline-user",0);
  chat_create_tables();
  cgi_set_content_type("application/json");
  db_prepare(&q,
    "SELECT datetime(mtime), xfrom, xmsg, octet_length(file),"
    "       fname, fmime, lmtime"
    "  FROM chat WHERE msgid=%d AND mdel IS NULL",
    msgid);
  if(SQLITE_ROW==db_step(&q)){
    const char *zDate = db_column_text(&q, 0);
    const char *zFrom = db_column_text(&q, 1);
    const char *zRawMsg = db_column_text(&q, 2);
    const int nByte = db_column_int(&q, 3);
    const char *zFName = db_column_text(&q, 4);
    const char *zFMime = db_column_text(&q, 5);
    const char *zLMtime = db_column_text(&q, 7);
    blob_appendf(&json,"{\"msgid\": %d,", msgid);

    blob_appendf(&json, "\"mtime\":\"%.10sT%sZ\",", zDate, zDate+11);
    if( zLMtime && zLMtime[0] ){
      blob_appendf(&json, "\"lmtime\":%!j,", zLMtime);
    }
    blob_append(&json, "\"xfrom\":", -1);
    if(zFrom){
      blob_appendf(&json, "%!j,", zFrom);
      isWiki = fossil_strcmp(zFrom, zChatUser)==0;
    }else{
      /* see https://fossil-scm.org/forum/forumpost/e0be0eeb4c */
      blob_appendf(&json, "null,");
      isWiki = 0;
    }
    blob_appendf(&json, "\"uclr\":%!j,",
                 isWiki ? "transparent" : user_color(zFrom ? zFrom : "nobody"));
    blob_append(&json,"\"xmsg\":", 7);
    if(fRaw){
      blob_appendf(&json, "%!j,", zRawMsg);
    }else{
      char * zMsg = chat_format_to_html(zRawMsg ? zRawMsg : "", isWiki);
      blob_appendf(&json, "%!j,", zMsg);
      fossil_free(zMsg);
    }
    if( nByte==0 ){
      blob_appendf(&json, "\"fsize\":0");
    }else{
      blob_appendf(&json, "\"fsize\":%d,\"fname\":%!j,\"fmime\":%!j",
                   nByte, zFName, zFMime);
    }
    blob_append(&json,"}",1);
    cgi_set_content(&json);
  }else{
    ajax_route_error(404,"Chat message #%d not found.", msgid);
  }
  db_finalize(&q);
}

/*
** WEBPAGE: chat-download hidden loadavg-exempt
**
** Download the CHAT.FILE attachment associated with a single chat
** entry.  The "name" query parameter begins with an integer that
** identifies the particular chat message. The integer may be followed
** by a / and a filename, which will (A) indicate to the browser to
** use the indicated name when saving the file and (B) be used to
** guess the mimetype in some particular cases involving the "render"
** flag.
**
** If the "render" URL parameter is provided, the blob has a size
** greater than zero, and blob meets one of the following conditions
** then the fossil-rendered form of that content is returned, rather
** than the original:
**
** - Mimetype is text/x-markdown or text/markdown: emit HTML.
**
** - Mimetype is text/x-fossil-wiki or P("name") ends with ".wiki":
**   emit HTML.
**
** - Mimetype is text/x-pikchr or P("name") ends with ".pikchr": emit
**   image/svg+xml if rendering succeeds or text/html if rendering
**   fails.
*/
void chat_download_webpage(void){
  int msgid;
  int bCheckedMimetype = 0;  /* true to bypass the text/... mimetype
                             ** check at the end */
  Blob r;                    /* file content */
  const char *zMime;         /* file mimetype */
  const char *zName = PD("name","0");
  login_check_credentials();
  if( !g.perm.Chat ){
    style_header("Chat Not Authorized");
    @ <h1>Not Authorized</h1>
    @ <p>You do not have permission to use the chatroom on this
    @ repository.</p>
    style_finish_page();
    return;
  }
  chat_create_tables();
  msgid = atoi(zName);
  blob_zero(&r);
  zMime = db_text(0, "SELECT fmime FROM chat wHERE msgid=%d", msgid);
  if( zMime==0 ) return;
  db_blob(&r, "SELECT file FROM chat WHERE msgid=%d", msgid);
  if( r.nUsed>0 && P("render")!=0 ){
    /* Maybe return fossil-rendered form of the content. */
    Blob r2 = BLOB_INITIALIZER;    /* output target for rendering */
    const char * zMime2 = 0;       /* adjusted response mimetype */
    if(fossil_strcmp(zMime, "text/x-markdown")==0
       /* Firefox uploads md files with the mimetype text/markdown */
       || fossil_strcmp(zMime, "text/markdown")==0){
      markdown_to_html(&r, 0, &r2);
      safe_html(&r2);
      zMime2 = "text/html";
      bCheckedMimetype = 1;
    }else if(fossil_strcmp(zMime, "text/x-fossil-wiki")==0
             || sqlite3_strglob("*.wiki", zName)==0){
      /* .wiki files get uploaded as application/octet-stream */
      wiki_convert(&r, &r2, 0);
      zMime2 = "text/html";
      bCheckedMimetype = 1;
    }else if(fossil_strcmp(zMime, "text/x-pikchr")==0
             || sqlite3_strglob("*.pikchr",zName)==0){
      /* .pikchr files get uploaded as application/octet-stream */
      const char *zPikchr = blob_str(&r);
      int w = 0, h = 0;
      char *zOut = pikchr(zPikchr, "pikchr", 0, &w, &h);
      if(zOut){
        blob_append(&r2, zOut, -1);
      }
      zMime2 = w>0 ? "image/svg+xml" : "text/html";
      free(zOut);
      bCheckedMimetype = 1;
    }
    if(r2.aData!=0){
      blob_swap(&r, &r2);
      blob_reset(&r2);
      zMime = zMime2;
    }
  }
  if( bCheckedMimetype==0 && sqlite3_strglob("text/*", zMime)==0 ){
    /* The problem: both Chrome and Firefox upload *.patch with
    ** the mimetype text/x-patch, whereas we very often use that
    ** name glob for fossil-format patches. That causes such files
    ** to attempt to render in the browser when clicked via
    ** download links in chat.
    **
    ** The workaround: */
    if( looks_like_binary(&r) ){
      zMime = "application/octet-stream";
    }
  }
  cgi_set_content_type(zMime);
  cgi_set_content(&r);
}


/*
** WEBPAGE: chat-delete hidden loadavg-exempt
**
** Delete the chat entry identified by the name query parameter.
** Invoking fetch("chat-delete/"+msgid) from javascript in the client
** will delete a chat entry from the CHAT table.
**
** This routine both deletes the identified chat entry and also inserts
** a new entry with the current timestamp and with:
**
**   *  xmsg = NULL
**
**   *  file = NULL
**
**   *  mdel = The msgid of the row that was deleted
**
** This new entry will then be propagated to all listeners so that they
** will know to delete their copies of the message too.
*/
void chat_delete_webpage(void){
  int mdel;
  char *zOwner;
  login_check_credentials();
  if( !g.perm.Chat ) return;
  chat_create_tables();
  mdel = atoi(PD("name","0"));
  zOwner = db_text(0, "SELECT xfrom FROM chat WHERE msgid=%d", mdel);
  if( zOwner==0 ) return;
  if( fossil_strcmp(zOwner, g.zLogin)!=0 && !g.perm.Admin ) return;
  db_multi_exec(
    "PRAGMA secure_delete=ON;\n"
    "BEGIN;\n"
    "DELETE FROM chat WHERE msgid=%d;\n"
    "INSERT INTO chat(mtime, xfrom, mdel)"
    " VALUES(julianday('now'), %Q, %d);\n"
    "COMMIT;",
    mdel, g.zLogin, mdel
  );
}

/*
** WEBPAGE: chat-backup hidden
**
** Download an SQLite database containing all chat content with a
** message-id larger than the "msgid" query parameter.  Setup
** privilege is required to use this URL.
**
** This is used to implement the "fossil chat pull" command.
*/
void chat_backup_webpage(void){
  int msgid;
  unsigned char *pDb = 0;
  sqlite3_int64 szDb = 0;
  Blob chatDb;
  login_check_credentials();
  if( !g.perm.Setup ) return;
  msgid = atoi(PD("msgid","0"));
  db_multi_exec(
    "ATTACH ':memory:' AS mem1;\n"
    "PRAGMA mem1.page_size=512;\n"
    "CREATE TABLE mem1.chat AS SELECT * FROM repository.chat WHERE msgid>%d;\n",
    msgid
  );
  pDb = sqlite3_serialize(g.db, "mem1", &szDb, 0);
  if( pDb==0 ){
    fossil_fatal("Out of memory");
  }
  blob_init(&chatDb, (const char*)pDb, (int)szDb);
  cgi_set_content_type("application/x-sqlite3");
  cgi_set_content(&chatDb);
}

/*
** SQL Function: chat_msg_from_event(TYPE,OBJID,USER,MSG)
**
** This function returns HTML text that describes an entry from the EVENT
** table (that is, a timeline event) for display in chat.  Parameters:
**
**    TYPE         The event type.  'ci', 'w', 't', 'g', and so forth
**    OBJID        EVENT.OBJID
**    USER         coalesce(EVENT.EUSER,EVENT.USER)
**    MSG          coalesce(EVENT.ECOMMENT, EVENT.COMMENT)
**
** This function is intended to be called by the temp.chat_trigger1 trigger
** which is created by alert_create_trigger() routine.
*/
void chat_msg_from_event(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zType = (const char*)sqlite3_value_text(argv[0]);
  int rid = sqlite3_value_int(argv[1]);
  const char *zUser = (const char*)sqlite3_value_text(argv[2]);
  const char *zMsg = (const char*)sqlite3_value_text(argv[3]);
  char *zRes = 0;

  if( zType==0 || zUser==0 || zMsg==0 ) return;
  if( zType[0]=='c' ){
    /* Check-ins */
    char *zBranch;
    char *zUuid;

    zBranch = db_text(0,
       "SELECT value FROM tagxref"
       " WHERE tagxref.rid=%d"
       "   AND tagxref.tagid=%d"
       "   AND tagxref.tagtype>0",
       rid, TAG_BRANCH);
    zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    zRes = mprintf("%W (check-in: <a href='%R/info/%S'>%S</a>, "
                   "user: <a href='%R/timeline?u=%t&c=%S'>%h</a>, "
                   "branch: <a href='%R/timeline?r=%t&c=%S'>%h</a>)",
             zMsg,
             zUuid, zUuid,
             zUser, zUuid, zUser,
             zBranch, zUuid, zBranch
    );
    fossil_free(zBranch);
    fossil_free(zUuid);
  }else if( zType[0]=='w' ){
    /* Wiki page changes */
    char *zUuid = rid_to_uuid(rid);
    wiki_hyperlink_override(zUuid);
    if( zMsg[0]=='-' ){
      zRes = mprintf("Delete wiki page <a href='%R/whistory?name=%t'>%h</a>",
         zMsg+1, zMsg+1);
    }else if( zMsg[0]=='+' ){
      zRes = mprintf("Added wiki page <a href='%R/whistory?name=%t'>%h</a>",
         zMsg+1, zMsg+1);
    }else if( zMsg[0]==':' ){
      zRes = mprintf("<a href='%R/wdiff?id=%!S'>Changes</a> to wiki page "
                     "<a href='%R/whistory?name=%t'>%h</a>",
         zUuid, zMsg+1, zMsg+1);
    }else{
      zRes = mprintf("%W", zMsg);
    }
    wiki_hyperlink_override(0);
    fossil_free(zUuid);
  }else if( zType[0]=='f' ){
    /* Forum changes */
    char *zUuid = rid_to_uuid(rid);
    zRes = mprintf( "%W (artifact: <a href='%R/info/%S'>%S</a>, "
                    "user: <a href='%R/timeline?u=%t&c=%S'>%h</a>)",
                    zMsg, zUuid, zUuid, zUser, zUuid, zUser);
    fossil_free(zUuid);
  }else{
    /* Anything else */
    zRes = mprintf("%W", zMsg);
  }
  if( zRes ){
    sqlite3_result_text(context, zRes, -1, fossil_free);
  }
}


/*
** COMMAND: chat
**
** Usage: %fossil chat [SUBCOMMAND] [--remote URL] [ARGS...]
**
** This command performs actions associated with the /chat instance
** on the default remote Fossil repository (the Fossil repository whose
** URL shows when you run the "fossil remote" command) or to the URL
** specified by the --remote option.  If there is no default remote
** Fossil repository and the --remote option is omitted, then this
** command fails with an error.
**
** Subcommands:
**
** > fossil chat
**
**      When there is no SUBCOMMAND (when this command is simply "fossil chat")
**      the response is to bring up a web-browser window to the chatroom
**      on the default system web-browser.  You can accomplish the same by
**      typing the appropriate URL into the web-browser yourself.  This
**      command is merely a convenience for command-line oriented people.
**
** > fossil chat pull
**
**      Copy chat content from the server down into the local clone,
**      as a backup or archive.  Setup privilege is required on the server.
**
**        --all                  Download all chat content. Normally only
**                               previously undownloaded content is retrieved.
**        --debug                Additional debugging output
**        --out DATABASE         Store CHAT table in separate database file
**                               DATABASE rather that adding to local clone
**        --unsafe               Allow the use of unencrypted http://
**
** > fossil chat send [ARGUMENTS]
**
**      This command sends a new message to the chatroom.  The message
**      to be sent is determined by arguments as follows:
**
**        -f|--file FILENAME     File to attach to the message
**        --as FILENAME2         Causes --file FILENAME to be sent with
**                               the attachment name FILENAME2
**        -m|--message TEXT      Text of the chat message
**        --remote URL           Send to this remote URL
**        --unsafe               Allow the use of unencrypted http://
**
** > fossil chat url
**
**      Show the default URL used to access the chat server.
**
** Additional subcommands may be added in the future.
*/
void chat_command(void){
  const char *zUrl = find_option("remote",0,1);
  int urlFlags = 0;
  int isDefaultUrl = 0;
  int i;

  db_find_and_open_repository(0,0);
  if( zUrl ){
    urlFlags = URL_PROMPT_PW;
  }else{
    zUrl = db_get("last-sync-url",0);
    if( zUrl==0 ){
      fossil_fatal("no \"remote\" repository defined");
    }else{
      isDefaultUrl = 1;
    }
  }
  url_parse(zUrl, urlFlags);
  if( g.url.isFile || g.url.isSsh ){
    fossil_fatal("chat only works for http:// and https:// URLs");
  }
  i = (int)strlen(g.url.path);
  while( i>0 && g.url.path[i-1]=='/' ) i--;
  if( g.url.port==g.url.dfltPort ){
    zUrl = mprintf(
      "%s://%T%.*T",
      g.url.protocol, g.url.name, i, g.url.path
    );
  }else{
    zUrl = mprintf(
      "%s://%T:%d%.*T",
      g.url.protocol, g.url.name, g.url.port, i, g.url.path
    );
  }
  if( g.argc==2 ){
    const char *zBrowser = fossil_web_browser();
    char *zCmd;
    verify_all_options();
    if( zBrowser==0 ) return;
#ifdef _WIN32
    zCmd = mprintf("%s %s/chat?cli &", zBrowser, zUrl);
#else
    zCmd = mprintf("%s \"%s/chat?cli\" &", zBrowser, zUrl);
#endif
    fossil_system(zCmd);
  }else if( strcmp(g.argv[2],"send")==0 ){
    const char *zFilename = find_option("file","f",1);
    const char *zAs = find_option("as",0,1);
    const char *zMsg = find_option("message","m",1);
    int allowUnsafe = find_option("unsafe",0,0)!=0;
    const int mFlags = HTTP_GENERIC | HTTP_QUIET | HTTP_NOCOMPRESS;
    int i;
    const char *zPw;
    char *zLMTime;
    Blob up, down, fcontent;
    char zBoundary[80];
    sqlite3_uint64 r[3];
    if( zFilename==0 && zMsg==0 ){
      fossil_fatal("must have --message or --file or both");
    }
    if( !g.url.isHttps && !allowUnsafe ){
      fossil_fatal("URL \"%s\" is unencrypted. Use https:// instead", zUrl);
    }
    verify_all_options();
    if( g.argc>3 ){
      fossil_fatal("unknown extra argument: \"%s\"", g.argv[3]);
    }
    i = (int)strlen(g.url.path);
    while( i>0 && g.url.path[i-1]=='/' ) i--;
    g.url.path = mprintf("%.*s/chat-send", i, g.url.path);
    blob_init(&up, 0, 0);
    blob_init(&down, 0, 0);
    sqlite3_randomness(sizeof(r),r);
    sqlite3_snprintf(sizeof(zBoundary),zBoundary,
                     "--------%016llu%016llu%016llu", r[0], r[1], r[2]);
    blob_appendf(&up, "%s", zBoundary);
    zLMTime = db_text(0,
              "SELECT strftime('%%Y-%%m-%%dT%%H:%%M:%%S','now','localtime')");
    if( zLMTime ){
      blob_appendf(&up,"\r\nContent-Disposition: form-data; name=\"lmtime\"\r\n"
                       "\r\n%z\r\n%s", zLMTime, zBoundary);
    }
    if( g.url.user && g.url.user[0] ){
      blob_appendf(&up,"\r\nContent-Disposition: form-data; name=\"resid\"\r\n"
                       "\r\n%z\r\n%s", obscure(g.url.user), zBoundary);
    }
    zPw = g.url.passwd;
    if( zPw==0 && isDefaultUrl ) zPw = unobscure(db_get("last-sync-pw", 0));
    if( zPw && zPw[0] ){
      blob_appendf(&up,"\r\nContent-Disposition: form-data; name=\"token\"\r\n"
                       "\r\n%z\r\n%s", obscure(zPw), zBoundary);
    }
    if( zMsg && zMsg[0] ){
      blob_appendf(&up,"\r\nContent-Disposition: form-data; name=\"msg\"\r\n"
                       "\r\n%s\r\n%s", zMsg, zBoundary);
    }
    if( zFilename && blob_read_from_file(&fcontent, zFilename, ExtFILE)>0 ){
      char *zFN = mprintf("%s", file_tail(zAs ? zAs : zFilename));
      int i;
      const char *zMime = mimetype_from_name(zFN);
      for(i=0; zFN[i]; i++){
        char c = zFN[i];
        if( fossil_isalnum(c) ) continue;
        if( c=='.' ) continue;
        if( c=='-' ) continue;
        zFN[i] = '_';
      }
      blob_appendf(&up,"\r\nContent-Disposition: form-data; name=\"file\";"
                       " filename=\"%s\"\r\n", zFN);
      blob_appendf(&up,"Content-Type: %s\r\n\r\n", zMime);
      blob_append(&up, fcontent.aData, fcontent.nUsed);
      blob_appendf(&up,"\r\n%s", zBoundary);
    }
    blob_append(&up,"--\r\n", 4);
    http_exchange(&up, &down, mFlags, 4, "multipart/form-data");
    blob_reset(&up);
    if( sqlite3_strglob("{\"isError\": true,*", blob_str(&down))==0 ){
      if( strstr(blob_str(&down), "not logged in")!=0 ){
        fossil_print("ERROR: username and/or password is incorrect\n");
      }else{
        fossil_print("ERROR: %s\n", blob_str(&down));
      }
      fossil_fatal("unable to send the chat message");
    }
    blob_reset(&down);
  }else if( strcmp(g.argv[2],"pull")==0 ){
    /* Pull the CHAT table from the default server down into the repository
    ** here on the local side */
    int allowUnsafe = find_option("unsafe",0,0)!=0;
    int bDebug = find_option("debug",0,0)!=0;
    const char *zOut = find_option("out",0,1);
    int bAll = find_option("all",0,0)!=0;
    int mFlags = HTTP_GENERIC | HTTP_QUIET | HTTP_NOCOMPRESS;
    int msgid;
    Blob reqUri;    /* The REQUEST_URI:  .../chat-backup?msgid=... */
    char *zObs;
    const char *zPw;
    Blob up, down;
    int nChat;
    int rc;
    verify_all_options();
    chat_create_tables();
    msgid = bAll ? 0 : db_int(0,"SELECT max(msgid) FROM chat");
    if( !g.url.isHttps && !allowUnsafe ){
      fossil_fatal("URL \"%s\" is unencrypted. Use https:// instead", zUrl);
    }
    blob_init(&reqUri, g.url.path, -1);
    blob_appendf(&reqUri, "/chat-backup?msgid=%d", msgid);
    if( g.url.user && g.url.user[0] ){
      zObs = obscure(g.url.user);
      blob_appendf(&reqUri, "&resid=%t", zObs);
      fossil_free(zObs);
    }
    zPw = g.url.passwd;
    if( zPw==0 && isDefaultUrl ){
      zPw = unobscure(db_get("last-sync-pw", 0));
      if( zPw==0 ){
        /* Can happen if "remember password" is not used. */
        g.url.flags |= URL_PROMPT_PW;
        url_prompt_for_password();
        zPw = g.url.passwd;
      }
    }
    if( zPw && zPw[0] ){
      zObs = obscure(zPw);
      blob_appendf(&reqUri, "&token=%t", zObs);
      fossil_free(zObs);
    }
    g.url.path = blob_str(&reqUri);
    if( bDebug ){
      fossil_print("REQUEST_URI: %s\n", g.url.path);
      mFlags &= ~HTTP_QUIET;
      mFlags |= HTTP_VERBOSE;
    }
    blob_init(&up, 0, 0);
    blob_init(&down, 0, 0);
    http_exchange(&up, &down, mFlags, 4, 0);
    if( zOut ){
      blob_write_to_file(&down, zOut);
      fossil_print("Chat database at %s is %d bytes\n", zOut, blob_size(&down));
    }else{
      db_multi_exec("ATTACH ':memory:' AS chatbu;");
      if( g.fSqlTrace ){
        fossil_trace("-- deserialize(\"chatbu\", pData, %d);\n",
                     blob_size(&down));
      }
      rc = sqlite3_deserialize(g.db, "chatbu",
                            (unsigned char*)blob_buffer(&down),
                             blob_size(&down), blob_size(&down), 0);
      if( rc ){
        fossil_fatal("cannot open patch database: %s", sqlite3_errmsg(g.db));
      }
      nChat = db_int(0, "SELECT count(*) FROM chatbu.chat");
      fossil_print("Got %d new records, %d bytes\n", nChat, blob_size(&down));
      db_multi_exec(
        "REPLACE INTO repository.chat(msgid,mtime,lmtime,xfrom,xmsg,"
                                     "fname,fmime,mdel,file)"
        " SELECT msgid,mtime,lmtime,xfrom,xmsg,fname,fmime,mdel,file"
          " FROM chatbu.chat;"
      );
    }
  }else if( strcmp(g.argv[2],"url")==0 ){
    /* Show the URL to access chat. */
    fossil_print("%s/chat\n", zUrl);
  }else{
    fossil_fatal("no such subcommand \"%s\".  Use --help for help", g.argv[2]);
  }
}
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to check-in versions of the project
** from the local repository.
*/
#include "config.h"
#include "checkin.h"
#include <assert.h>

/*
** Change filter options.
*/
enum {
  /* Zero-based bit indexes. */
  CB_EDITED , CB_UPDATED , CB_CHANGED, CB_MISSING  , CB_ADDED, CB_DELETED,
  CB_RENAMED, CB_CONFLICT, CB_META   , CB_UNCHANGED, CB_EXTRA, CB_MERGE  ,
  CB_RELPATH, CB_CLASSIFY, CB_MTIME  , CB_SIZE     , CB_FATAL, CB_COMMENT,
** Generate text describing all changes.  Prepend zPrefix to each line
** of output.

  /* Bitmask values. */
  C_EDITED    = 1 << CB_EDITED,     /* Edited, merged, and conflicted files. */
  C_UPDATED   = 1 << CB_UPDATED,    /* Files updated by merge/integrate. */
  C_CHANGED   = 1 << CB_CHANGED,    /* Treated the same as the above two. */
  C_MISSING   = 1 << CB_MISSING,    /* Missing and non- files. */
  C_ADDED     = 1 << CB_ADDED,      /* Added files. */
  C_DELETED   = 1 << CB_DELETED,    /* Deleted files. */
  C_RENAMED   = 1 << CB_RENAMED,    /* Renamed files. */
  C_CONFLICT  = 1 << CB_CONFLICT,   /* Files having merge conflicts. */
  C_META      = 1 << CB_META,       /* Files with metadata changes. */
  C_UNCHANGED = 1 << CB_UNCHANGED,  /* Unchanged files. */
  C_EXTRA     = 1 << CB_EXTRA,      /* Unmanaged files. */
  C_MERGE     = 1 << CB_MERGE,      /* Merge contributors. */
  C_FILTER    = C_EDITED  | C_UPDATED | C_CHANGED  | C_MISSING | C_ADDED
              | C_DELETED | C_RENAMED | C_CONFLICT | C_META    | C_UNCHANGED
              | C_EXTRA   | C_MERGE,                /* All filter bits. */
  C_ALL       = C_FILTER & ~(C_EXTRA     | C_MERGE),/* All managed files. */
  C_DIFFER    = C_FILTER & ~(C_UNCHANGED | C_MERGE),/* All differences. */
  C_RELPATH   = 1 << CB_RELPATH,    /* Show relative paths. */
  C_CLASSIFY  = 1 << CB_CLASSIFY,   /* Show file change types. */
  C_DEFAULT   = (C_ALL & ~C_UNCHANGED) | C_MERGE | C_CLASSIFY,
  C_MTIME     = 1 << CB_MTIME,      /* Show file modification time. */
  C_SIZE      = 1 << CB_SIZE,       /* Show file size in bytes. */
  C_FATAL     = 1 << CB_FATAL,      /* Fail on MISSING/NOT_A_FILE. */
  C_COMMENT   = 1 << CB_COMMENT,    /* Precede each line with "# ". */
};

/*
** Create a TEMP table named SFILE and add all unmanaged files named on
** the command-line to that table.  If directories are named, then add
** all unmanaged files contained underneath those directories.  If there
** are no files or directories named on the command-line, then add all
** unmanaged files anywhere in the check-out.
**
** This routine never follows symlinks.  It always treats symlinks as
** object unto themselves.
*/
static void locate_unmanaged_files(
  int argc,           /* Number of command-line arguments to examine */
  char **argv,        /* values of command-line arguments */
  unsigned scanFlags, /* Zero or more SCAN_xxx flags */
  Glob *pIgnore       /* Do not add files that match this GLOB */
){
  Blob name;   /* Name of a candidate file or directory */
  char *zName; /* Name of a candidate file or directory */
  int isDir;   /* 1 for a directory, 0 if doesn't exist, 2 for anything else */
  int i;       /* Loop counter */
  int nRoot;   /* length of g.zLocalRoot */
** We assume that vfile_check_signature has been run.

  db_multi_exec("CREATE TEMP TABLE sfile(pathname TEXT PRIMARY KEY %s,"
                " mtime INTEGER, size INTEGER)", filename_collation());
  nRoot = (int)strlen(g.zLocalRoot);
  if( argc==0 ){
    blob_init(&name, g.zLocalRoot, nRoot - 1);
    vfile_scan(&name, blob_size(&name), scanFlags, pIgnore, 0, SymFILE);
    blob_reset(&name);
  }else{
    for(i=0; i<argc; i++){
      file_canonical_name(argv[i], &name, 0);
      zName = blob_str(&name);
      isDir = file_isdir(zName, SymFILE);
      if( isDir==1 ){
        vfile_scan(&name, nRoot-1, scanFlags, pIgnore, 0, SymFILE);
      }else if( isDir==0 ){
        fossil_warning("not found: %s", &zName[nRoot]);
      }else if( file_access(zName, R_OK) ){
        fossil_fatal("cannot open %s", &zName[nRoot]);
      }else{
        /* Only add unmanaged file paths specified on the command line. */
        db_multi_exec(
            "INSERT OR IGNORE INTO sfile(pathname)"
            " SELECT %Q WHERE NOT EXISTS"
            " (SELECT 1 FROM vfile WHERE pathname=%Q)",
            &zName[nRoot], &zName[nRoot]
        );
      }
      blob_reset(&name);
    }
  }
}

/*
** Generate text describing all changes.
**
** If missingIsFatal is true, then any files that are missing or which
** are not true files results in a fatal error.
** We assume that vfile_check_signature has been run.
*/
static void status_report(
  Blob *report,          /* Append the status report here */
  const char *zPrefix,   /* Prefix on each line of the report */
  unsigned flags         /* Filter and other configuration flags */
  int missingIsFatal     /* MISSING and NOT_A_FILE are fatal errors */
){
  Stmt q;
  int nPrefix = strlen(zPrefix);
  int nErr = 0;
  Blob rewrittenOrigName, rewrittenPathname;
  Blob sql = BLOB_INITIALIZER, where = BLOB_INITIALIZER;
  const char *zName;
  int i;
  db_prepare(&q, 
    "SELECT pathname, deleted, chnged, rid, coalesce(origname!=pathname,0)"
    "  FROM vfile "
    " WHERE file_is_selected(id)"
    "   AND (chnged OR deleted OR rid=0 OR pathname!=origname) ORDER BY 1"
  );

  /* Skip the file report if no files are requested at all. */
  if( !(flags & (C_ALL | C_EXTRA)) ){
     goto skipFiles;
  }

  /* Assemble the path-limiting WHERE clause, if any. */
  blob_zero(&where);
  for(i=2; i<g.argc; i++){
    Blob fname;
    file_tree_name(g.argv[i], &fname, 0, 1);
    zName = blob_str(&fname);
    if( fossil_strcmp(zName, ".")==0 ){
      blob_reset(&where);
      break;
    }
    blob_append_sql(&where,
      " %s (pathname=%Q %s) "
      "OR (pathname>'%q/' %s AND pathname<'%q0' %s)",
      (blob_size(&where)>0) ? "OR" : "AND", zName,
      filename_collation(), zName, filename_collation(),
      zName, filename_collation()
    );
  }

  /* Obtain the list of managed files if appropriate. */
  blob_zero(&sql);
  if( flags & C_ALL ){
    /* Start with a list of all managed files. */
    blob_append_sql(&sql,
      "SELECT pathname, %s as mtime, %s as size, deleted, chnged, rid,"
      "       coalesce(origname!=pathname,0) AS renamed, 1 AS managed,"
      "       origname"
      "  FROM vfile LEFT JOIN blob USING (rid)"
      " WHERE is_selected(id)%s",
      flags & C_MTIME ? "datetime(checkin_mtime(:vid, rid), "
                        "'unixepoch', toLocal())" : "''" /*safe-for-%s*/,
      flags & C_SIZE ? "coalesce(blob.size, 0)" : "0" /*safe-for-%s*/,
      blob_sql_text(&where));

    /* Exclude unchanged files unless requested. */
    if( !(flags & C_UNCHANGED) ){
      blob_append_sql(&sql,
          " AND (chnged OR deleted OR rid=0 OR pathname!=origname)");
    }
  }

  /* If C_EXTRA, add unmanaged files to the query result too. */
  if( flags & C_EXTRA ){
    if( blob_size(&sql) ){
      blob_append_sql(&sql, " UNION ALL");
    }
    blob_append_sql(&sql,
      " SELECT pathname, %s, %s, 0, 0, 0, 0, 0, NULL"
      " FROM sfile WHERE pathname NOT IN (%s)%s",
      flags & C_MTIME ? "datetime(mtime, 'unixepoch', toLocal())" : "''",
      flags & C_SIZE ? "size" : "0",
      fossil_all_reserved_names(0), blob_sql_text(&where));
  }
  blob_reset(&where);

  /* Pre-create the "ok" temporary table so the checkin_mtime() SQL function
   * does not lead to SQLITE_ABORT_ROLLBACK during execution of the OP_OpenRead
   * SQLite opcode.  checkin_mtime() calls mtime_of_manifest_file() which
   * creates a temporary table if it doesn't already exist, thus invalidating
   * the prepared statement in the middle of its execution. */
  db_multi_exec("CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY)");

  /* Append an ORDER BY clause then compile the query. */
  blob_append_sql(&sql, " ORDER BY pathname");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_reset(&sql);

  /* Bind the check-out version ID to the query if needed. */
  if( (flags & C_ALL) && (flags & C_MTIME) ){
    db_bind_int(&q, ":vid", db_lget_int("checkout", 0));
  }

  /* Execute the query and assemble the report. */
  blob_zero(&rewrittenPathname);
  blob_zero(&rewrittenOrigName);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3)==0;
    int isRenamed = db_column_int(&q,4);
    char *zFullName = mprintf("%s/%s", g.zLocalRoot, zPathname);
    blob_append(report, zPrefix, nPrefix);
    const char *zPathname = db_column_text(&q, 0);
    const char *zClass = 0;
    int isManaged = db_column_int(&q, 7);
    const char *zMtime = db_column_text(&q, 1);
    int size = db_column_int(&q, 2);
    int isDeleted = db_column_int(&q, 3);
    int isChnged = db_column_int(&q, 4);
    int isNew = isManaged && !db_column_int(&q, 5);
    int isRenamed = db_column_int(&q, 6);
    const char *zOrigName = 0;
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    int isMissing = !file_isfile_or_link(zFullName);

    /* Determine the file change classification, if any. */
    if( isDeleted ){
      if( flags & C_DELETED ){
      blob_appendf(report, "DELETED    %s\n", zPathname);
    }else if( !file_isfile(zFullName) ){
      if( access(zFullName, 0)==0 ){
        blob_appendf(report, "NOT_A_FILE %s\n", zPathname);
        if( missingIsFatal ){
          fossil_warning("not a file: %s", zPathname);
        zClass = "DELETED";
      }
    }else if( isMissing ){
      if( file_access(zFullName, F_OK)==0 ){
        if( flags & C_MISSING ){
          zClass = "NOT_A_FILE";
        }
        if( flags & C_FATAL ){
          fossil_warning("not a file: %s", zFullName);
          nErr++;
        }
      }else{
        if( flags & C_MISSING ){
        blob_appendf(report, "MISSING    %s\n", zPathname);
        if( missingIsFatal ){
          fossil_warning("missing file: %s", zPathname);
          zClass = "MISSING";
        }
        if( flags & C_FATAL ){
          fossil_warning("missing file: %s", zFullName);
          nErr++;
        }
      }
    }else if( isNew ){
      if( flags & C_ADDED ){
      blob_appendf(report, "ADDED      %s\n", zPathname);
    }else if( isDeleted ){
      blob_appendf(report, "DELETED    %s\n", zPathname);
    }else if( isChnged==2 ){
      blob_appendf(report, "UPDATED_BY_MERGE %s\n", zPathname);
    }else if( isChnged==3 ){
      blob_appendf(report, "ADDED_BY_MERGE %s\n", zPathname);
    }else if( isChnged==1 ){
      blob_appendf(report, "EDITED     %s\n", zPathname);
    }else if( isRenamed ){
      blob_appendf(report, "RENAMED    %s\n", zPathname);
        zClass = "ADDED";
      }
    }else if( (flags & (C_UPDATED | C_CHANGED)) && isChnged==2 ){
      zClass = "UPDATED_BY_MERGE";
    }else if( (flags & C_ADDED) && isChnged==3 ){
      zClass = "ADDED_BY_MERGE";
    }else if( (flags & (C_UPDATED | C_CHANGED)) && isChnged==4 ){
      zClass = "UPDATED_BY_INTEGRATE";
    }else if( (flags & C_ADDED) && isChnged==5 ){
      zClass = "ADDED_BY_INTEGRATE";
    }else if( (flags & C_META) && isChnged==6 ){
      zClass = "EXECUTABLE";
    }else if( (flags & C_META) && isChnged==7 ){
      zClass = "SYMLINK";
    }else if( (flags & C_META) && isChnged==8 ){
      zClass = "UNEXEC";
    }else if( (flags & C_META) && isChnged==9 ){
      zClass = "UNLINK";
    }else if( (flags & C_CONFLICT) && isChnged && !file_islink(zFullName)
           && file_contains_merge_marker(zFullName) ){
      zClass = "CONFLICT";
    }else if( (flags & (C_EDITED | C_CHANGED)) && isChnged
           && (isChnged<2 || isChnged>9) ){
      zClass = "EDITED";
    }else if( (flags & C_UNCHANGED) && isManaged && !isNew
                                    && !isChnged && !isRenamed ){
      zClass = "UNCHANGED";
    }else if( (flags & C_EXTRA) && !isManaged ){
      zClass = "EXTRA";
    }
    if( (flags & C_RENAMED) && isRenamed ){
      zOrigName = db_column_text(&q,8);
      if( zClass==0 ){
        zClass = "RENAMED";
      }
    }

    /* Only report files for which a change classification was determined. */
    if( zClass ){
      if( flags & C_COMMENT ){
        blob_append(report, "# ", 2);
      }
      if( flags & C_CLASSIFY ){
        blob_appendf(report, "%-10s ", zClass);
      }
      if( flags & C_MTIME ){
        blob_append(report, zMtime, -1);
        blob_append(report, "  ", 2);
      }
      if( flags & C_SIZE ){
        blob_appendf(report, "%7d ", size);
      }
      if( flags & C_RELPATH ){
        /* If C_RELPATH, display paths relative to current directory. */
        file_relative_name(zFullName, &rewrittenPathname, 0);
        zPathname = blob_str(&rewrittenPathname);
        if( zPathname[0]=='.' && zPathname[1]=='/' ){
          zPathname += 2;  /* no unnecessary ./ prefix */
        }
        if( (flags & (C_FILTER ^ C_RENAMED)) && zOrigName ){
          char *zOrigFullName = mprintf("%s%s", g.zLocalRoot, zOrigName);
          file_relative_name(zOrigFullName, &rewrittenOrigName, 0);
          zOrigName = blob_str(&rewrittenOrigName);
          fossil_free(zOrigFullName);
          if( zOrigName[0]=='.' && zOrigName[1]=='/' ){
            zOrigName += 2;  /* no unnecessary ./ prefix */
          }
        }
      }
      if( (flags & (C_FILTER ^ C_RENAMED)) && zOrigName ){
        blob_appendf(report, "%s  ->  ", zOrigName);
      }
      blob_appendf(report, "%s\n", zPathname);
    }
    free(zFullName);
  }
  blob_reset(&rewrittenPathname);
  blob_reset(&rewrittenOrigName);
  db_finalize(&q);
  db_prepare(&q, "SELECT uuid FROM vmerge JOIN blob ON merge=rid"
                 " WHERE id=0");
  while( db_step(&q)==SQLITE_ROW ){
    blob_append(report, zPrefix, nPrefix);
    blob_appendf(report, "MERGED_WITH %s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);

  /* If C_MERGE, put merge contributors at the end of the report. */
skipFiles:
  if( flags & C_MERGE ){
    db_prepare(&q, "SELECT mhash, id FROM vmerge WHERE id<=0" );
    while( db_step(&q)==SQLITE_ROW ){
      if( flags & C_COMMENT ){
        blob_append(report, "# ", 2);
      }
      if( flags & C_CLASSIFY ){
        const char *zClass;
        switch( db_column_int(&q, 1) ){
          case -1: zClass = "CHERRYPICK" ; break;
          case -2: zClass = "BACKOUT"    ; break;
          case -4: zClass = "INTEGRATE"  ; break;
          default: zClass = "MERGED_WITH"; break;
        }
        blob_appendf(report, "%-10s ", zClass);
      }
      blob_append(report, db_column_text(&q, 0), -1);
      blob_append(report, "\n", 1);
    }
    db_finalize(&q);
  }
  if( nErr ){
    fossil_fatal("aborting due to prior errors");
  }
}

/*
** COMMAND: changes
**
** Usage: %fossil changes
**
** Use the "relative-paths" setting and the --abs-paths and
** --rel-paths command line options to determine whether the
** status report should be shown relative to the current
** working directory.
** Report on the edit status of all files in the current checkout.
** See also the "status" and "extra" commands.
*/
void changes_cmd(void){
  Blob report;
  int vid;
static int determine_cwd_relative_option()
  db_must_be_within_tree();
  blob_zero(&report);
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 0);
  status_report(&report, "", 0);
{
  int relativePaths = db_get_boolean("relative-paths", 1);
  int absPathOption = find_option("abs-paths", 0, 0)!=0;
  int relPathOption = find_option("rel-paths", 0, 0)!=0;
  blob_write_to_file(&report, "-");
  if( absPathOption ){ relativePaths = 0; }
  if( relPathOption ){ relativePaths = 1; }
  return relativePaths;
}

/*
** COMMAND: changes
** COMMAND: status
**
** Usage: %fossil status
** Usage: %fossil changes|status ?OPTIONS? ?PATHS ...?
**
** Report the change status of files in the current check-out.  If one or
** more PATHS are specified, only changes among the named files and
** directories are reported.  Directories are searched recursively.
**
** The status command is similar to the changes command, except it lacks
** several of the options supported by changes and it has its own header
** and footer information.  The header information is a subset of that
** shown by the info command, and the footer shows if there are any forks.
** Change type classification is always enabled for the status command.
**
** Each line of output is the name of a changed file, with paths shown
** according to the "relative-paths" setting, unless overridden by the
** --abs-paths or --rel-paths options.
**
** By default, all changed files are selected for display.  This behavior
** can be overridden by using one or more filter options (listed below),
** in which case only files with the specified change type(s) are shown.
** As a special case, the --no-merge option does not inhibit this default.
** This default shows exactly the set of changes that would be checked-
** in by the commit command.
**
** If no filter options are used, or if the --merge option is used, the
** artifact hash of each merge contributor check-in version is displayed at
** the end of the report.  The --no-merge option is useful to display the
** default set of changed files without the merge contributors.
**
** If change type classification is enabled, each output line starts with
** a code describing the file's change type, e.g. EDITED or RENAMED.  It
** is enabled by default unless exactly one change type is selected.  For
** the purposes of determining the default, --changed counts as selecting
** one change type.  The default can be overridden by the --classify or
** --no-classify options.
**
** --edited and --updated produce disjoint sets.  --updated shows a file
** only when it is identical to that of its merge contributor, and the
** change type classification is UPDATED_BY_MERGE or UPDATED_BY_INTEGRATE.
** If the file had to be merged with any other changes, it is considered
** to be merged or conflicted and therefore will be shown by --edited, not
** --updated, with types EDITED or CONFLICT.  The --changed option can be
** used to display the union of --edited and --updated.
**
** --differ is so named because it lists all the differences between the
** checked-out version and the check-out directory.  In addition to the
** default changes (excluding --merge), it lists extra files which (if
** ignore-glob is set correctly) may be worth adding.  Prior to doing a
** commit, it is good practice to check --differ to see not only which
** changes would be committed but also if any files should be added.
**
** If both --merge and --no-merge are used, --no-merge has priority.  The
** same is true of --classify and --no-classify.
**
** The "fossil changes --extra" command is equivalent to "fossil extras".
**
** General options:
**    --abs-paths       Display absolute pathnames
** Report on the status of the current checkout.
**    -b|--brief        Show a single keyword for the status
**    --rel-paths       Display pathnames relative to the current working
**                      directory
**    --hash            Verify file status using hashing rather than
**                      relying on file mtimes
**    --case-sensitive BOOL  Override case-sensitive setting
**    --dotfiles        Include unmanaged files beginning with a dot
**    --ignore <CSG>    Ignore unmanaged files matching CSG glob patterns
**
** Options specific to the changes command:
**    --header          Identify the repository if report is non-empty
**    -v|--verbose      Say "(none)" if the change report is empty
**    --classify        Start each line with the file's change type
**    --no-classify     Do not print file change types
**
** Filter options:
**    --edited          Display edited, merged, and conflicted files
**    --updated         Display files updated by merge/integrate
**    --changed         Combination of the above two options
**    --missing         Display missing files
**    --added           Display added files
**    --deleted         Display deleted files
**    --renamed         Display renamed files
**    --conflict        Display files having merge conflicts
**    --meta            Display files with metadata changes
**    --unchanged       Display unchanged files
**    --all             Display all managed files, i.e. all of the above
**    --extra           Display unmanaged files
**    --differ          Display modified and extra files
**    --merge           Display merge contributors
**    --no-merge        Do not display merge contributors
**
** See also: [[extras]], [[ls]]
*/
void status_cmd(void){
  /* Affirmative and negative flag option tables. */
  static const struct {
    const char *option; /* Flag name. */
    unsigned mask;      /* Flag bits. */
  } flagDefs[] = {
    {"edited"  , C_EDITED  }, {"updated"    , C_UPDATED  },
    {"changed" , C_CHANGED }, {"missing"    , C_MISSING  },
    {"added"   , C_ADDED   }, {"deleted"    , C_DELETED  },
    {"renamed" , C_RENAMED }, {"conflict"   , C_CONFLICT },
    {"meta"    , C_META    }, {"unchanged"  , C_UNCHANGED},
    {"all"     , C_ALL     }, {"extra"      , C_EXTRA    },
    {"differ"  , C_DIFFER  }, {"merge"      , C_MERGE    },
    {"classify", C_CLASSIFY},
  }, noFlagDefs[] = {
    {"no-merge", C_MERGE   }, {"no-classify", C_CLASSIFY },
  };

  Blob report = BLOB_INITIALIZER;
  enum {CHANGES, STATUS} command = *g.argv[1]=='s' ? STATUS : CHANGES;
  /* --sha1sum is an undocumented alias for --hash for backwards compatiblity */
  int useHash = find_option("hash",0,0)!=0 || find_option("sha1sum",0,0)!=0;
  int showHdr = command==CHANGES && find_option("header", 0, 0);
  int verboseFlag = command==CHANGES && find_option("verbose", "v", 0);
  const char *zIgnoreFlag = find_option("ignore", 0, 1);
  unsigned scanFlags = 0;
  unsigned flags = 0;
  int vid;
  db_must_be_within_tree();
       /* 012345678901234 */
  printf("repository:   %s\n", db_lget("repository",""));
  printf("local-root:   %s\n", g.zLocalRoot);
  printf("server-code:  %s\n", db_get("server-code", ""));
  int vid, i;

  fossil_pledge("stdio rpath wpath cpath fattr id flock tty chown");

  if( find_option("brief","b",0) ){
    /* The --brief or -b option is special.  It cannot be used with any
    ** other options.  It outputs a single keyword which indicates the
    ** fossil status, for use by shell scripts.  The output might be
    ** one of:
    **
    **     clean         The current working directory is within an
    **                   unmodified fossil check-out.
    **
    **     dirty         The pwd is within a fossil check-out that has
    **                   uncommitted changes
    **
    **     none          The pwd is not within a fossil check-out.
    */
    int chnged;
    if( g.argc>2 ){
      fossil_fatal("No other arguments or options may occur with --brief");
    }
    if( db_open_local(0)==0 ){
      fossil_print("none\n");
      return;
    }
    vid = db_lget_int("checkout", 0);
    vfile_check_signature(vid, 0);
    chnged = db_int(0,
      "SELECT 1 FROM vfile"
      " WHERE vid=%d"
      "   AND (chnged>0 OR deleted OR rid==0)",
      vid
    );
    if( chnged ){
      fossil_print("dirty\n");
    }else{
      fossil_print("clean\n");
    }
    return;
  }

  /* Load affirmative flag options. */
  for( i=0; i<count(flagDefs); ++i ){
    if( (command==CHANGES || !(flagDefs[i].mask & C_CLASSIFY))
     && find_option(flagDefs[i].option, 0, 0) ){
      flags |= flagDefs[i].mask;
    }
  }

  /* If no filter options are specified, enable defaults. */
  if( !(flags & C_FILTER) ){
    flags |= C_DEFAULT;
  }

  /* If more than one filter is enabled, enable classification.  This is tricky.
   * Having one filter means flags masked by C_FILTER is a power of two.  If a
   * number masked by one less than itself is zero, it's either zero or a power
   * of two.  It's already known to not be zero because of the above defaults.
   * Unlike --all, --changed is a single filter, i.e. it sets only one bit.
   * Also force classification for the status command. */
  if( command==STATUS || (flags & (flags-1) & C_FILTER) ){
    flags |= C_CLASSIFY;
  }

  /* Negative flag options override defaults applied above. */
  for( i=0; i<count(noFlagDefs); ++i ){
    if( (command==CHANGES || !(noFlagDefs[i].mask & C_CLASSIFY))
     && find_option(noFlagDefs[i].option, 0, 0) ){
      flags &= ~noFlagDefs[i].mask;
    }
  }

  /* Confirm current working directory is within check-out. */
  db_must_be_within_tree();

  /* Get check-out version. l*/
  vid = db_lget_int("checkout", 0);
  if( vid ){

    show_common_info(vid, "checkout:", 0);
  /* Relative path flag determination is done by a shared function. */
  if( determine_cwd_relative_option() ){
    flags |= C_RELPATH;
  }
  changes_cmd();

  /* If --ignore is not specified, use the ignore-glob setting. */
  if( !zIgnoreFlag ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }

  /* Get the --dotfiles argument, or read it from the dotfiles setting. */
  if( find_option("dotfiles", 0, 0) || db_get_boolean("dotfiles", 0) ){
    scanFlags = SCAN_ALL;
  }

  /* We should be done with options. */
  verify_all_options();

  /* Check for changed files. */
  vfile_check_signature(vid, useHash ? CKSIG_HASH : 0);

  /* Search for unmanaged files if requested. */
  if( flags & C_EXTRA ){
    Glob *pIgnore = glob_create(zIgnoreFlag);
    locate_unmanaged_files(g.argc-2, g.argv+2, scanFlags, pIgnore);
    glob_free(pIgnore);
  }

  /* The status command prints general information before the change list. */
  if( command==STATUS ){
    fossil_print("repository:   %s\n", db_repository_filename());
    fossil_print("local-root:   %s\n", g.zLocalRoot);
    if( g.zConfigDbName ){
      fossil_print("config-db:    %s\n", g.zConfigDbName);
    }
    if( vid ){
      show_common_info(vid, "checkout:", 1, 1);
    }
    db_record_repository_filename(0);
  }

  /* Find and print all requested changes. */
  blob_zero(&report);
  status_report(&report, flags);
  if( blob_size(&report) ){
    if( showHdr ){
      fossil_print(
        "Changes for %s at %s:\n", db_get("project-name", "<unnamed>"),
        g.zLocalRoot);
    }
    blob_write_to_file(&report, "-");
  }else if( verboseFlag ){
    fossil_print("  (none)\n");
  }
  blob_reset(&report);

  /* The status command ends with warnings about ambiguous leaves (forks). */
  if( command==STATUS ){
    leaf_ambiguity_warning(vid, vid);
  }
}

/* zIn is a string that is guaranteed to be followed by \n.  Return
** a pointer to the next line after the \n.  The returned value might
** point to the \000 string terminator.
*/
static const char *next_line(const char *zIn){
  const char *z = strchr(zIn, '\n');
  assert( z!=0 );
  return z+1;
}

/* zIn is a non-empty list of filenames in sorted order and separated
** by \n.  There might be a cluster of lines that have the same n-character
** prefix.  Return a pointer to the start of the last line of that
** cluster.  The return value might be zIn if the first line of zIn is
** unique in its first n character.
*/
static const char *last_line(const char *zIn, int n){
  const char *zLast = zIn;
  const char *z;
  while( 1 ){
    z = next_line(zLast);
    if( z[0]==0 || (n>0 && strncmp(zIn, z, n)!=0) ) break;
    zLast = z;
  }
  return zLast;
}

/*
** Print a section of a filelist hierarchy graph.  This is a helper
** routine for print_filelist_as_tree() below.
*/
static const char *print_filelist_section(
  const char *zIn,           /* List of filenames, separated by \n */
  const char *zLast,         /* Last filename in the list to print */
  const char *zPrefix,       /* Prefix so put before each output line */
  int nDir                   /* Ignore this many characters of directory name */
){
  /* Unicode box-drawing characters: U+251C, U+2514, U+2502 */
  const char *zENTRY = "\342\224\234\342\224\200\342\224\200 ";
  const char *zLASTE = "\342\224\224\342\224\200\342\224\200 ";   
  const char *zCONTU = "\342\224\202   ";
  const char *zBLANK = "    ";

  while( zIn<=zLast ){
    int i;
    for(i=nDir; zIn[i]!='\n' && zIn[i]!='/'; i++){}
    if( zIn[i]=='/' ){
      char *zSubPrefix;
      const char *zSubLast = last_line(zIn, i+1);
      zSubPrefix = mprintf("%s%s", zPrefix, zSubLast==zLast ? zBLANK : zCONTU);
      fossil_print("%s%s%.*s\n", zPrefix, zSubLast==zLast ? zLASTE : zENTRY,
                   i-nDir, &zIn[nDir]);
      zIn = print_filelist_section(zIn, zSubLast, zSubPrefix, i+1);
      fossil_free(zSubPrefix);
    }else{
      fossil_print("%s%s%.*s\n", zPrefix, zIn==zLast ? zLASTE : zENTRY,
                   i-nDir, &zIn[nDir]);
      zIn = next_line(zIn);
    }
  }
  return zIn;
}

/*
** Input blob pList is a list of filenames, one filename per line,
** in sorted order and with / directory separators.  Output this list
** as a tree in a manner similar to the "tree" command on Linux.
*/
static void print_filelist_as_tree(Blob *pList){
  char *zAll;
  const char *zLast;
  fossil_print("%s\n", g.zLocalRoot);
  zAll = blob_str(pList);
  if( zAll[0] ){
    zLast = last_line(zAll, 0);
    print_filelist_section(zAll, zLast, "", 0);
  }
}

/*
** Take care of -r version of ls command
*/
static void ls_cmd_rev(
  const char *zRev,  /* Revision string given */
  int verboseFlag,   /* Verbose flag given */
  int showAge,       /* Age flag given */
  int timeOrder,     /* Order by time flag given */
  int treeFmt        /* Show output in the tree format */
){
  Stmt q;
  char *zOrderBy = "pathname COLLATE nocase";
  char *zName;
  Blob where;
  int rid;
  int i;
  Blob out;

  /* Handle given file names */
  blob_zero(&where);
  for(i=2; i<g.argc; i++){
    Blob fname;
    file_tree_name(g.argv[i], &fname, 0, 1);
    zName = blob_str(&fname);
    if( fossil_strcmp(zName, ".")==0 ){
      blob_reset(&where);
      break;
    }
    blob_append_sql(&where,
      " %s (pathname=%Q %s) "
      "OR (pathname>'%q/' %s AND pathname<'%q0' %s)",
      (blob_size(&where)>0) ? "OR" : "AND (", zName,
      filename_collation(), zName, filename_collation(),
      zName, filename_collation()
    );
  }
  if( blob_size(&where)>0 ){
    blob_append_sql(&where, ")");
  }

  rid = symbolic_name_to_rid(zRev, "ci");
  if( rid==0 ){
    fossil_fatal("not a valid check-in: %s", zRev);
  }

  if( timeOrder ){
    zOrderBy = "mtime DESC";
  }

  compute_fileage(rid,0);
  db_prepare(&q,
    "SELECT datetime(fileage.mtime, toLocal()), fileage.pathname,\n"
    "       blob.size\n"
    "  FROM fileage, blob\n"
    " WHERE blob.rid=fileage.fid %s\n"
    " ORDER BY %s;", blob_sql_text(&where), zOrderBy /*safe-for-%s*/
  );
  blob_reset(&where);
  if( treeFmt ) blob_init(&out, 0, 0);

  while( db_step(&q)==SQLITE_ROW ){
    const char *zTime = db_column_text(&q,0);
    const char *zFile = db_column_text(&q,1);
    int size = db_column_int(&q,2);
    if( treeFmt ){
      blob_appendf(&out, "%s\n", zFile);
    }else if( verboseFlag ){
      fossil_print("%s  %7d  %s\n", zTime, size, zFile);
    }else if( showAge ){
      fossil_print("%s  %s\n", zTime, zFile);
    }else{
      fossil_print("%s\n", zFile);
    }
  }
  db_finalize(&q);
  if( treeFmt ){
    print_filelist_as_tree(&out);
    blob_reset(&out);
  }
}

/*
** COMMAND: ls
**
** Usage: %fossil ls [-l]
** Usage: %fossil ls ?OPTIONS? ?PATHS ...?
**
** Show the names of all files in the current checkout.  The -l provides
** extra information about each file.
** List all files in the current check-out.  If PATHS is included, only the
** named files (or their children if directories) are shown.
**
** The ls command is essentially two related commands in one, depending on
** whether or not the -r option is given.  -r selects a specific check-in
** version to list, in which case -R can be used to select the repository.
** The fine behavior of the --age, -v, and -t options is altered by the -r
** option as well, as explained below.
**
** The --age option displays file commit times.  Like -r, --age has the
** side effect of making -t sort by commit time, not modification time.
**
** The -v option provides extra information about each file.  Without -r,
** -v displays the change status, in the manner of the changes command.
** With -r, -v shows the commit time and size of the checked-in files.
**
** The -t option changes the sort order.  Without -t, files are sorted by
** path and name (case insensitive sort if -r).  If neither --age nor -r
** are used, -t sorts by modification time, otherwise by commit time.
**
** Options:
**   --age                 Show when each file was committed
**   --hash                With -v, verify file status using hashing
**                         rather than relying on file sizes and mtimes
**   -r VERSION            The specific check-in to list
**   -R|--repository REPO  Extract info from repository REPO
**   -t                    Sort output in time order
**   --tree                Tree format
**   -v|--verbose          Provide extra information about each file
**
** See also: [[changes]], [[extras]], [[status]], [[tree]]
*/
void ls_cmd(void){
  int vid;
  Stmt q;
  int verboseFlag;
  int showAge;
  int treeFmt;
  int timeOrder;
  char *zOrderBy = "pathname";
  Blob where;
  int isBrief;
  int i;
  int useHash = 0;
  const char *zName;
  const char *zRev;

  verboseFlag = find_option("verbose","v", 0)!=0;
  if( !verboseFlag ){
  isBrief = find_option("l","l", 0)==0;
    verboseFlag = find_option("l","l", 0)!=0; /* deprecated */
  }
  showAge = find_option("age",0,0)!=0;
  zRev = find_option("r","r",1);
  timeOrder = find_option("t","t",0)!=0;
  if( verboseFlag ){
    useHash = find_option("hash",0,0)!=0;
  }
  treeFmt = find_option("tree",0,0)!=0;
  if( treeFmt ){
    if( zRev==0 ) zRev = "current";
  }

  if( zRev!=0 ){
    db_find_and_open_repository(0, 0);
    verify_all_options();
    ls_cmd_rev(zRev,verboseFlag,showAge,timeOrder,treeFmt);
    return;
  }else if( find_option("R",0,1)!=0 ){
    fossil_fatal("the -r is required in addition to -R");
  }

  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( timeOrder ){
    if( showAge ){
      zOrderBy = mprintf("checkin_mtime(%d,rid) DESC", vid);
    }else{
      zOrderBy = "mtime DESC";
    }
  }
  verify_all_options();
  blob_zero(&where);
  for(i=2; i<g.argc; i++){
    Blob fname;
    file_tree_name(g.argv[i], &fname, 0, 1);
    zName = blob_str(&fname);
    if( fossil_strcmp(zName, ".")==0 ){
      blob_reset(&where);
      break;
    }
    blob_append_sql(&where,
       " %s (pathname=%Q %s) "
       "OR (pathname>'%q/' %s AND pathname<'%q0' %s)",
       (blob_size(&where)>0) ? "OR" : "WHERE", zName,
       filename_collation(), zName, filename_collation(),
       zName, filename_collation()
    );
  }
  vfile_check_signature(vid, 0);
  db_prepare(&q,
     "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0)"
     "  FROM vfile"
     " ORDER BY 1"
  );
  vfile_check_signature(vid, useHash ? CKSIG_HASH : 0);
  if( showAge ){
    db_prepare(&q,
       "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0),"
       "       datetime(checkin_mtime(%d,rid),'unixepoch',toLocal())"
       "  FROM vfile %s"
       " ORDER BY %s",
       vid, blob_sql_text(&where), zOrderBy /*safe-for-%s*/
    );
  }else{
    db_prepare(&q,
       "SELECT pathname, deleted, rid, chnged,"
       "       coalesce(origname!=pathname,0), islink"
       "  FROM vfile %s"
       " ORDER BY %s", blob_sql_text(&where), zOrderBy /*safe-for-%s*/
    );
  }
  blob_reset(&where);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isNew = db_column_int(&q,2)==0;
    int chnged = db_column_int(&q,3);
    int renamed = db_column_int(&q,4);
    int isLink = db_column_int(&q,5);
    char *zFullName = mprintf("%s/%s", g.zLocalRoot, zPathname);
    if( isBrief ){
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    const char *type = "";
    if( verboseFlag ){
      printf("%s\n", zPathname);
    }else if( isNew ){
      printf("ADDED      %s\n", zPathname);
    }else if( !file_isfile(zFullName) ){
      if( access(zFullName, 0)==0 ){
        printf("NOT_A_FILE %s\n", zPathname);
      }else{
        printf("MISSING    %s\n", zPathname);
      }
    }else if( isDeleted ){
      if( isNew ){
        type = "ADDED      ";
      }else if( isDeleted ){
        type = "DELETED    ";
      }else if( !file_isfile_or_link(zFullName) ){
        if( file_access(zFullName, F_OK)==0 ){
          type = "NOT_A_FILE ";
        }else{
          type = "MISSING    ";
        }
      }else if( chnged ){
      printf("DELETED    %s\n", zPathname);
    }else if( chnged ){
      printf("EDITED     %s\n", zPathname);
    }else if( renamed ){
      printf("RENAMED    %s\n", zPathname);
    }else{
      printf("UNCHANGED  %s\n", zPathname);
        if( chnged==2 ){
          type = "UPDATED_BY_MERGE ";
        }else if( chnged==3 ){
          type = "ADDED_BY_MERGE ";
        }else if( chnged==4 ){
          type = "UPDATED_BY_INTEGRATE ";
        }else if( chnged==5 ){
          type = "ADDED_BY_INTEGRATE ";
        }else if( !isLink && file_contains_merge_marker(zFullName) ){
          type = "CONFLICT   ";
        }else{
          type = "EDITED     ";
        }
      }else if( renamed ){
        type = "RENAMED    ";
      }else{
        type = "UNCHANGED  ";
      }
    }
    if( showAge ){
      fossil_print("%s%s  %s\n", type, db_column_text(&q, 5), zPathname);
    }else{
      fossil_print("%s%s\n", type, zPathname);
    }
    free(zFullName);
  }
  db_finalize(&q);
}

/*
** Construct and return a string which is an SQL expression that will
** be TRUE if value zVal matches any of the GLOB expressions in the list
** zGlobList.  For example:
** COMMAND: tree
**
**    zVal:       "x"
**    zGlobList:  "*.o,*.obj"
** Usage: %fossil tree ?OPTIONS? ?PATHS ...?
**
**    Result:     "(x GLOB '*.o' OR x GLOB '*.obj')"
** List all files in the current check-out much like the "tree"
** command does.  If PATHS is included, only the named files
** (or their children if directories) are shown.
**
** Each element of the GLOB list may optionally be enclosed in either '...'
** or "...".  This allows commas in the expression.  Whitespace at the
** Options:
**   -r VERSION            The specific check-in to list
**   -R|--repository REPO  Extract info from repository REPO
** beginning and end of each GLOB pattern is ignored, except when enclosed
** within '...' or "...".
**
** This routine makes no effort to free the memory space it uses.
** See also: [[ls]]
*/
char *glob_expr(const char *zVal, const char *zGlobList){
  Blob expr;
  char *zSep = "(";
  int nTerm = 0;
  int i;
  int cTerm;

void tree_cmd(void){
  if( zGlobList==0 || zGlobList[0]==0 ) return "0";
  blob_zero(&expr);
  while( zGlobList[0] ){
    while( isspace(zGlobList[0]) || zGlobList[0]==',' ) zGlobList++;
    if( zGlobList[0]==0 ) break;
    if( zGlobList[0]=='\'' || zGlobList[0]=='"' ){
      cTerm = zGlobList[0];
      zGlobList++;
  const char *zRev;
    }else{
      cTerm = ',';
    }

    for(i=0; zGlobList[i] && zGlobList[i]!=cTerm; i++){}
    if( cTerm==',' ){
      while( i>0 && isspace(zGlobList[i-1]) ){ i--; }
    }
    blob_appendf(&expr, "%s%s GLOB '%.*q'", zSep, zVal, i, zGlobList);
    zSep = " OR ";
  zRev = find_option("r","r",1);
    if( cTerm!=',' && zGlobList[i] ) i++;
    zGlobList += i;
    if( zGlobList[0] ) zGlobList++;
    nTerm++;
  if( zRev==0 ) zRev = "current";
  db_find_and_open_repository(0, 0);
  verify_all_options();
  }
  if( nTerm ){
    blob_appendf(&expr, ")");
    return blob_str(&expr);
  }else{
  ls_cmd_rev(zRev,0,0,0,1);
    return "0";
  }
}

/*
** COMMAND: extras
**
** Usage: %fossil extras ?--dotfiles? ?--ignore GLOBPATTERN?
** Usage: %fossil extras ?OPTIONS? ?PATH1 ...?
**
** Print a list of all files in the source tree that are not part of
** the current checkout.  See also the "clean" command.
** Print a list of all files in the source tree that are not part of the
** current check-out. See also the "clean" command. If paths are specified,
** only files in the given directories will be listed.
**
** Files and subdirectories whose names begin with "." are normally
** ignored but can be included by adding the --dotfiles option.
**
** Files whose names match any of the glob patterns in the "ignore-glob"
** setting are ignored. This setting can be overridden by the --ignore
** option, whose CSG argument is a comma-separated list of glob patterns.
**
** Pathnames are displayed according to the "relative-paths" setting,
** unless overridden by the --abs-paths or --rel-paths options.
**
** Options:
**    --abs-paths             Display absolute pathnames
**    --case-sensitive BOOL   Override case-sensitive setting
**    --dotfiles              Include files beginning with a dot (".")
**    --header                Identify the repository if there are extras
**    --ignore CSG            Ignore files matching patterns from the argument
**    --rel-paths             Display pathnames relative to the current working
**                            directory
**    --tree                  Show output in the tree format
**
** See also: [[changes]], [[clean]], [[status]]
*/
void extra_cmd(void){
void extras_cmd(void){
  Blob path;
  Blob repo;
  Blob report = BLOB_INITIALIZER;
  Stmt q;
  int n;
  const char *zIgnoreFlag = find_option("ignore",0,1);
  int allFlag = find_option("dotfiles",0,0)!=0;
  unsigned scanFlags = find_option("dotfiles",0,0)!=0 ? SCAN_ALL : 0;
  unsigned flags = C_EXTRA;
  int showHdr = find_option("header",0,0)!=0;
  int treeFmt = find_option("tree",0,0)!=0;
  Glob *pIgnore;

  if( find_option("temp",0,0)!=0 ) scanFlags |= SCAN_TEMP;
  db_must_be_within_tree();
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);

  if( determine_cwd_relative_option() ){
    flags |= C_RELPATH;
  }

  if( db_get_boolean("dotfiles", 0) ) scanFlags |= SCAN_ALL;

  if( treeFmt ){
    flags &= ~C_RELPATH;
  }

  /* We should be done with options.. */
  verify_all_options();

  if( zIgnoreFlag==0 ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  vfile_scan(0, &path, blob_size(&path), allFlag);
  db_prepare(&q, 
      "SELECT x FROM sfile"
  pIgnore = glob_create(zIgnoreFlag);
  locate_unmanaged_files(g.argc-2, g.argv+2, scanFlags, pIgnore);
  glob_free(pIgnore);

      " WHERE x NOT IN ('manifest','manifest.uuid','_FOSSIL_',"
                         "'_FOSSIL_-journal','.fos','.fos-journal')"
      "   AND NOT %s"
  blob_zero(&report);
  status_report(&report, flags);
      " ORDER BY 1",
      glob_expr("x", zIgnoreFlag)
  );
  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  if( blob_size(&report) ){
    if( showHdr ){
      fossil_print("Extras for %s at %s:\n", db_get("project-name","<unnamed>"),
                   g.zLocalRoot);
    }
    if( treeFmt ){
      print_filelist_as_tree(&report);
    }else{
      blob_write_to_file(&report, "-");
    }
  while( db_step(&q)==SQLITE_ROW ){
    printf("%s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);
  blob_reset(&report);
}

/*
** COMMAND: clean
**
** Usage: %fossil clean ?--force? ?--dotfiles?
** Usage: %fossil clean ?OPTIONS? ?PATH ...?
**
** Delete all "extra" files in the source tree.  "Extra" files are
** files that are not officially part of the checkout.  See also
** the "extra" command. This operation cannot be undone. 
** Delete all "extra" files in the source tree.  "Extra" files are files
** that are not officially part of the check-out.  If one or more PATH
** arguments appear, then only the files named, or files contained with
** directories named, will be removed.
**
** If the --prompt option is used, prompts are issued to confirm the
** permanent removal of each file.  Otherwise, files are backed up to the
** undo buffer prior to removal, and prompts are issued only for files
** whose removal cannot be undone due to their large size or due to
** --disable-undo being used.
**
** The --force option treats all prompts as having been answered yes,
** You will be prompted before removing each file. If you are
** whereas --no-prompt treats them as having been answered no.
** sure you wish to remove all "extra" files you can specify the
** optional --force flag and no prompts will be issued.
**
** Files matching any glob pattern specified by the --clean option are
** deleted without prompting, and the removal cannot be undone.
**
** No file that matches glob patterns specified by --ignore or --keep will
** Files and subdirectories whose names begin with "." are
** normally ignored.  They are included if the "--dotfiles" option
** is used.
** ever be deleted.  Files and subdirectories whose names begin with "."
** are automatically ignored unless the --dotfiles option is used.
**
** The default values for --clean, --ignore, and --keep are determined by
** the (versionable) clean-glob, ignore-glob, and keep-glob settings.
**
** The --verily option ignores the keep-glob and ignore-glob settings and
** turns on --force, --emptydirs, --dotfiles, and --disable-undo.  Use the
** --verily option when you really want to clean up everything.  Extreme
** care should be exercised when using the --verily option.
**
** Options:
**    --allckouts            Check for empty directories within any check-outs
**                           that may be nested within the current one.  This
**                           option should be used with great care because the
**                           empty-dirs setting (and other applicable settings)
**                           belonging to the other repositories, if any, will
**                           not be checked.
**    --case-sensitive BOOL  Override case-sensitive setting
**    --dirsonly             Only remove empty directories.  No files will
**                           be removed.  Using this option will automatically
**                           enable the --emptydirs option as well.
**    --disable-undo         WARNING: This option disables use of the undo
**                           mechanism for this clean operation and should be
**                           used with extreme caution.
**    --dotfiles             Include files beginning with a dot (".")
**    --emptydirs            Remove any empty directories that are not
**                           explicitly exempted via the empty-dirs setting
**                           or another applicable setting or command line
**                           argument.  Matching files, if any, are removed
**                           prior to checking for any empty directories;
**                           therefore, directories that contain only files
**                           that were removed will be removed as well.
**    -f|--force             Remove files without prompting
**    -i|--prompt            Prompt before removing each file.  This option
**                           implies the --disable-undo option.
**    -x|--verily            WARNING: Removes everything that is not a managed
**                           file or the repository itself.  This option
**                           implies the --force, --emptydirs, --dotfiles, and
**                           --disable-undo options. Furthermore, it
**                           completely disregards the keep-glob
**                           and ignore-glob settings.  However, it does honor
**                           the --ignore and --keep options.
**    --clean CSG            WARNING: Never prompt to delete any files matching
**                           this comma separated list of glob patterns.  Also,
**                           deletions of any files matching this pattern list
**                           cannot be undone.
**    --ignore CSG           Ignore files matching patterns from the
**                           comma separated list of glob patterns
**    --keep <CSG>           Keep files matching this comma separated
**                           list of glob patterns
**    -n|--dry-run           Delete nothing, but display what would have been
**                           deleted
**    --no-prompt            Do not prompt the user for input and assume an
**                           answer of 'No' for every question
**    --temp                 Remove only Fossil-generated temporary files
**    -v|--verbose           Show all files as they are removed
**
** See also: [[addremove]], [[extras]], [[status]]
*/
void clean_cmd(void){
  int allFlag;
  int dotfilesFlag;
  Blob path, repo;
  Stmt q;
  int n;
  allFlag = find_option("force","f",0)!=0;
  dotfilesFlag = find_option("dotfiles",0,0)!=0;
  int allFileFlag, allDirFlag, dryRunFlag, verboseFlag;
  int emptyDirsFlag, dirsOnlyFlag;
  int disableUndo, noPrompt;
  int alwaysPrompt = 0;
  unsigned scanFlags = 0;
  int verilyFlag = 0;
  const char *zIgnoreFlag, *zKeepFlag, *zCleanFlag;
  Glob *pIgnore, *pKeep, *pClean;
  int nRoot;

#ifndef UNDO_SIZE_LIMIT  /* TODO: Setting? */
#define UNDO_SIZE_LIMIT  (10*1024*1024) /* 10MiB */
#endif

  undo_capture_command_line();
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( !dryRunFlag ){
    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }
  if( !dryRunFlag ){
    dryRunFlag = find_option("whatif",0,0)!=0;
  }
  disableUndo = find_option("disable-undo",0,0)!=0;
  noPrompt = find_option("no-prompt",0,0)!=0;
  alwaysPrompt = find_option("prompt","i",0)!=0;
  allFileFlag = allDirFlag = find_option("force","f",0)!=0;
  dirsOnlyFlag = find_option("dirsonly",0,0)!=0;
  emptyDirsFlag = find_option("emptydirs","d",0)!=0 || dirsOnlyFlag;
  if( find_option("dotfiles",0,0)!=0 ) scanFlags |= SCAN_ALL;
  if( find_option("temp",0,0)!=0 ) scanFlags |= SCAN_TEMP;
  if( find_option("allckouts",0,0)!=0 ) scanFlags |= SCAN_NESTED;
  zIgnoreFlag = find_option("ignore",0,1);
  verboseFlag = find_option("verbose","v",0)!=0;
  zKeepFlag = find_option("keep",0,1);
  zCleanFlag = find_option("clean",0,1);
  db_must_be_within_tree();
  db_multi_exec("CREATE TEMP TABLE sfile(x TEXT PRIMARY KEY)");
  n = strlen(g.zLocalRoot);
  blob_init(&path, g.zLocalRoot, n-1);
  if( find_option("verily","x",0)!=0 ){
    verilyFlag = allFileFlag = allDirFlag = 1;
    emptyDirsFlag = 1;
    disableUndo = 1;
    scanFlags |= SCAN_ALL;
    zCleanFlag = 0;
  }
  if( zIgnoreFlag==0 && !verilyFlag ){
    zIgnoreFlag = db_get("ignore-glob", 0);
  }
  if( zKeepFlag==0 && !verilyFlag ){
    zKeepFlag = db_get("keep-glob", 0);
  }
  if( zCleanFlag==0 && !verilyFlag ){
    zCleanFlag = db_get("clean-glob", 0);
  }
  if( db_get_boolean("dotfiles", 0) ) scanFlags |= SCAN_ALL;
  verify_all_options();
  pIgnore = glob_create(zIgnoreFlag);
  pKeep = glob_create(zKeepFlag);
  pClean = glob_create(zCleanFlag);
  nRoot = (int)strlen(g.zLocalRoot);
  if( !dirsOnlyFlag ){
    Stmt q;
    Blob repo;
  vfile_scan(0, &path, blob_size(&path), dotfilesFlag);
  db_prepare(&q, 
      "SELECT %Q || x FROM sfile"
      " WHERE x NOT IN ('manifest','manifest.uuid','_FOSSIL_',"
    if( !dryRunFlag && !disableUndo ) undo_begin();
    locate_unmanaged_files(g.argc-2, g.argv+2, scanFlags, pIgnore);
    db_prepare(&q,
        "SELECT %Q || pathname FROM sfile"
        " WHERE pathname NOT IN (%s)"
                       "'_FOSSIL_-journal','.fos','.fos-journal')"
      " ORDER BY 1", g.zLocalRoot);
  if( file_tree_name(g.zRepositoryName, &repo, 0) ){
    db_multi_exec("DELETE FROM sfile WHERE x=%B", &repo);
  }
  while( db_step(&q)==SQLITE_ROW ){
    if( allFlag ){
      unlink(db_column_text(&q, 0));
        " ORDER BY 1",
        g.zLocalRoot, fossil_all_reserved_names(0)
    );
    if( file_tree_name(g.zRepositoryName, &repo, 0, 0) ){
      db_multi_exec("DELETE FROM sfile WHERE pathname=%B", &repo);
    }
    db_multi_exec("DELETE FROM sfile WHERE pathname IN"
                  " (SELECT pathname FROM vfile)");
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      if( glob_match(pKeep, zName+nRoot) ){
        if( verboseFlag ){
          fossil_print("KEPT file \"%s\" not removed (due to --keep"
                       " or \"keep-glob\")\n", zName+nRoot);
        }
        continue;
      }
      if( !dryRunFlag && !glob_match(pClean, zName+nRoot) ){
        char *zPrompt = 0;
        char cReply;
        Blob ans = empty_blob;
        int undoRc = UNDO_NONE;
        if( alwaysPrompt ){
          zPrompt = mprintf("Remove unmanaged file \"%s\" (a=all/y/N)? ",
                            zName+nRoot);
          prompt_user(zPrompt, &ans);
          fossil_free(zPrompt);
          cReply = fossil_toupper(blob_str(&ans)[0]);
          blob_reset(&ans);
          if( cReply=='N' ) continue;
          if( cReply=='A' ){
            allFileFlag = 1;
            alwaysPrompt = 0;
          }else{
            undoRc = UNDO_SAVED_OK;
          }
        }else if( !disableUndo ){
          undoRc = undo_maybe_save(zName+nRoot, UNDO_SIZE_LIMIT);
        }
        if( undoRc!=UNDO_SAVED_OK ){
          if( allFileFlag ){
            cReply = 'Y';
          }else if( !noPrompt ){
            Blob ans;
            zPrompt = mprintf("\nWARNING: Deletion of this file will "
                              "not be undoable via the 'undo'\n"
                              "         command because %s.\n\n"
                              "Remove unmanaged file \"%s\" (a=all/y/N)? ",
                              undo_save_message(undoRc), zName+nRoot);
            prompt_user(zPrompt, &ans);
            fossil_free(zPrompt);
            cReply = blob_str(&ans)[0];
            blob_reset(&ans);
          }else{
            cReply = 'N';
          }
          if( cReply=='a' || cReply=='A' ){
            allFileFlag = 1;
          }else if( cReply!='y' && cReply!='Y' ){
            continue;
          }
        }
      }
      if( dryRunFlag || file_delete(zName)==0 ){
        if( verboseFlag || dryRunFlag ){
          fossil_print("Removed unmanaged file: %s\n", zName+nRoot);
        }
      }else{
        fossil_print("Could not remove file: %s\n", zName+nRoot);
      }
    }
    db_finalize(&q);
    if( !dryRunFlag && !disableUndo ) undo_finish();
  }
  if( emptyDirsFlag ){
    Glob *pEmptyDirs = glob_create(db_get("empty-dirs", 0));
    Stmt q;
    Blob root;
    blob_init(&root, g.zLocalRoot, nRoot - 1);
    vfile_dir_scan(&root, blob_size(&root), scanFlags, pIgnore,
                   pEmptyDirs, RepoFILE);
    blob_reset(&root);
    db_prepare(&q,
        "SELECT %Q || x FROM dscan_temp"
        " WHERE x NOT IN (%s) AND y = 0"
        " ORDER BY 1 DESC",
        g.zLocalRoot, fossil_all_reserved_names(0)
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      if( glob_match(pKeep, zName+nRoot) ){
        if( verboseFlag ){
          fossil_print("KEPT directory \"%s\" not removed (due to --keep"
                       " or \"keep-glob\")\n", zName+nRoot);
        }
        continue;
      }
      if( !allDirFlag && !dryRunFlag && !glob_match(pClean, zName+nRoot) ){
        char cReply;
        if( !noPrompt ){
          Blob ans;
          char *prompt = mprintf("Remove empty directory \"%s\" (a=all/y/N)? ",
                                 zName+nRoot);
          prompt_user(prompt, &ans);
          cReply = blob_str(&ans)[0];
          fossil_free(prompt);
          blob_reset(&ans);
        }else{
          cReply = 'N';
        }
        if( cReply=='a' || cReply=='A' ){
          allDirFlag = 1;
        }else if( cReply!='y' && cReply!='Y' ){
          continue;
        }
      }
      if( dryRunFlag || file_rmdir(zName)==0 ){
        if( verboseFlag || dryRunFlag ){
          fossil_print("Removed unmanaged directory: %s\n", zName+nRoot);
        }
      }else if( verboseFlag ){
        fossil_print("Could not remove directory: %s\n", zName+nRoot);
      }
    }
    db_finalize(&q);
    glob_free(pEmptyDirs);
  }
  glob_free(pClean);
  glob_free(pKeep);
  glob_free(pIgnore);
}

/*
** Prompt the user for a check-in or stash comment (given in pPrompt),
** gather the response, then return the response in pComment.
**
** Lines of the prompt that begin with # are discarded.  Excess whitespace
** is removed from the reply.
**
** Appropriate encoding translations are made on windows.
*/
void prompt_for_user_comment(Blob *pComment, Blob *pPrompt){
  const char *zEditor;
  char *zCmd;
  char *zFile;
  Blob reply, line;
  char *zComment;
  int i;

  zEditor = fossil_text_editor();
  if( zEditor==0 ){
    if( blob_size(pPrompt)>0 ){
      blob_append(pPrompt,
         "#\n"
         "# Since no default text editor is set using EDITOR or VISUAL\n"
         "# environment variables or the \"fossil set editor\" command,\n"
         "# and because no comment was specified using the \"-m\" or \"-M\"\n"
         "# command-line options, you will need to enter the comment below.\n"
         "# Type \".\" on a line by itself when you are done:\n", -1);
    }
    zFile = mprintf("-");
  }else{
    Blob fname;
    blob_zero(&fname);
    if( g.zLocalRoot!=0 ){
      file_relative_name(g.zLocalRoot, &fname, 1);
      zFile = db_text(0, "SELECT '%qci-comment-'||hex(randomblob(6))||'.txt'",
                      blob_str(&fname));
    }else{
      file_tempname(&fname, "ci-comment",0);
      zFile = mprintf("%s", blob_str(&fname));
    }
      Blob ans;
      char *prompt = mprintf("remove unmanaged file \"%s\" (y/N)? ",
    blob_reset(&fname);
  }
#if defined(_WIN32)
  blob_add_cr(pPrompt);
#endif
  if( blob_size(pPrompt)>0 ) blob_write_to_file(pPrompt, zFile);
  if( zEditor ){
    char *z, *zEnd;
    zCmd = mprintf("%s %$", zEditor, zFile);
                              db_column_text(&q, 0));
      blob_zero(&ans);
    fossil_print("%s\n", zCmd);
    if( fossil_system(zCmd) ){
      fossil_fatal("editor aborted: \"%s\"", zCmd);
    }
    blob_read_from_file(&reply, zFile, ExtFILE);
    z = blob_str(&reply);
    zEnd = strstr(z, "##########");
    if( zEnd ){
      /* Truncate the reply at any sequence of 10 or more # characters.
      ** The diff for the -v option occurs after such a sequence. */
      blob_resize(&reply, (int)(zEnd - z));
    }
  }else{
    char zIn[300];
    blob_zero(&reply);
      prompt_user(prompt, &ans);
      if( blob_str(&ans)[0]=='y' ){
    while( fgets(zIn, sizeof(zIn), stdin)!=0 ){
      if( zIn[0]=='.' && (zIn[1]==0 || zIn[1]=='\r' || zIn[1]=='\n') ){
        unlink(db_column_text(&q, 0));
        break;
      }
      blob_append(&reply, zIn, -1);
    }
  }
  blob_to_utf8_no_bom(&reply, 1);
  blob_to_lf_only(&reply);
  file_delete(zFile);
  free(zFile);
  blob_zero(pComment);
  while( blob_line(&reply, &line) ){
    int i, n;
    char *z;
  db_finalize(&q);
    n = blob_size(&line);
    z = blob_buffer(&line);
    for(i=0; i<n && fossil_isspace(z[i]);  i++){}
    if( i<n && z[i]=='#' ) continue;
    if( i<n || blob_size(pComment)>0 ){
      blob_appendf(pComment, "%b", &line);
    }
  }
  blob_reset(&reply);
  zComment = blob_str(pComment);
  i = strlen(zComment);
  while( i>0 && fossil_isspace(zComment[i-1]) ){ i--; }
  blob_resize(pComment, i);
}

/*
** Prepare a commit comment.  Let the user modify it using the
** editor specified in the global_config table or either
** the VISUAL or EDITOR environment variable.
**
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** zBranch might be NULL or an empty string if no forcing occurs.
**
** parent_rid is the recordid of the parent check-in.
*/
static void prepare_commit_comment(
  Blob *pComment,
  char *zInit,
  const char *zBranch,
  int parent_rid
  CheckinInfo *p,
  int parent_rid,
  int dryRunFlag
){
  const char *zEditor;
  char *zCmd;
  char *zFile;
  Blob text, line;
  Blob prompt;
  char *zComment;
  int i;
  blob_init(&text, zInit, -1);
  blob_append(&text,
#if defined(_WIN32) || defined(__CYGWIN__)
  int bomSize;
  const unsigned char *bom = get_utf8_bom(&bomSize);
  blob_init(&prompt, (const char *) bom, bomSize);
  if( zInit && zInit[0]){
    blob_append(&prompt, zInit, -1);
  }
#else
  blob_init(&prompt, zInit, -1);
#endif
  blob_append(&prompt,
    "\n"
    "# Enter a commit message for this check-in."
    "# Enter comments on this check-in.  Lines beginning with # are ignored.\n"
        " Lines beginning with # are ignored.\n"
    "# The check-in comment follows wiki formatting rules.\n"
    "#\n", -1
  );
  if( dryRunFlag ){
    blob_appendf(&prompt, "# DRY-RUN:  This is a test commit.  No changes "
                          "will be made to the repository\n#\n");
  }
  blob_appendf(&prompt, "# user: %s\n",
               p->zUserOvrd ? p->zUserOvrd : login_name());
  if( zBranch && zBranch[0] ){
    blob_appendf(&text, "# tags: %s\n#\n", zBranch);
  if( p->zBranch && p->zBranch[0] ){
    blob_appendf(&prompt, "# tags: %s\n#\n", p->zBranch);
  }else{
    char *zTags = info_tags_of_checkin(parent_rid, 1);
    if( zTags || p->azTag ){
      blob_append(&prompt, "# tags: ", 8);
      if(zTags){
        blob_appendf(&prompt, "%z%s", zTags, p->azTag ? ", " : "");
      }
      if(p->azTag){
        int i = 0;
        for( ; p->azTag[i]; ++i ){
          blob_appendf(&prompt, "%s%s", p->azTag[i],
                       p->azTag[i+1] ? ", " : "");
        }
      }
    if( zTags )  blob_appendf(&text, "# tags: %z\n#\n", zTags);
  }
      blob_appendf(&prompt, "\n#\n");
    }
  }
  status_report(&prompt, C_DEFAULT | C_FATAL | C_COMMENT);
  if( g.markPrivate ){
    blob_append(&text,
    blob_append(&prompt,
      "# PRIVATE BRANCH: This check-in will be private and will not sync to\n"
      "# repositories.\n"
      "#\n", -1
    );
  }
  if( p->integrateFlag ){
    blob_append(&prompt,
  status_report(&text, "# ", 1);
  zEditor = db_get("editor", 0);
      "#\n"
      "# All merged-in branches will be closed due to the --integrate flag\n"
      "#\n", -1
  if( zEditor==0 ){
    zEditor = getenv("VISUAL");
    );
  }
  if( zEditor==0 ){
    zEditor = getenv("EDITOR");
  if( p->verboseFlag ){
    DiffConfig DCfg;
    blob_appendf(&prompt,
        "#\n%.78c\n"
        "# The following diff is excluded from the commit message:\n#\n",
        '#'
    );
  }
  if( zEditor==0 ){
#ifdef __MINGW32__
    zEditor = "notepad";
#else
    zEditor = "ed";
#endif
  }
    diff_options(&DCfg, 0, 1);
    DCfg.diffFlags |= DIFF_VERBOSE;
    if( g.aCommitFile ){
      Stmt q;
      Blob sql = BLOB_INITIALIZER;
      FileDirList *diffFiles;
      int i;
      for(i=0; g.aCommitFile[i]!=0; ++i){}
      diffFiles = fossil_malloc_zero((i+1) * sizeof(*diffFiles));
      for(i=0; g.aCommitFile[i]!=0; ++i){
        blob_append_sql(&sql,
                        "SELECT pathname, deleted, rid "
                        "FROM vfile WHERE id=%d",
                        g.aCommitFile[i]);
        db_prepare(&q, "%s", blob_sql_text(&sql));
        blob_reset(&sql);
        assert( db_step(&q)==SQLITE_ROW );
        diffFiles[i].zName = fossil_strdup(db_column_text(&q, 0));
        DCfg.diffFlags &= (~DIFF_FILE_MASK);
        if( db_column_int(&q, 1) ){
          DCfg.diffFlags |= DIFF_FILE_DELETED;
        }else if( db_column_int(&q, 2)==0 ){
          DCfg.diffFlags |= DIFF_FILE_ADDED;
        }
  zFile = db_text(0, "SELECT '%qci-comment-' || hex(randomblob(6)) || '.txt'",
                   g.zLocalRoot);
#ifdef __MINGW32__
        db_finalize(&q);
        if( fossil_strcmp(diffFiles[i].zName, "." )==0 ){
          diffFiles[0].zName[0] = '.';
          diffFiles[0].zName[1] = 0;
          break;
        }
        diffFiles[i].nName = strlen(diffFiles[i].zName);
        diffFiles[i].nUsed = 0;
  blob_add_cr(&text);
#endif
  blob_write_to_file(&text, zFile);
  zCmd = mprintf("%s \"%s\"", zEditor, zFile);
  printf("%s\n", zCmd);
  if( portable_system(zCmd) ){
    fossil_panic("editor aborted");
      }
      diff_against_disk(0, &DCfg, diffFiles, &prompt);
      for( i=0; diffFiles[i].zName; ++i ){
        fossil_free(diffFiles[i].zName);
      }
      fossil_free(diffFiles);
    }else{
      diff_against_disk(0, &DCfg, 0, &prompt);
    }
  }
  prompt_for_user_comment(pComment, &prompt);
  blob_reset(&prompt);
}

/*
** Prepare text that describes a pending commit and write it into
** a file at the root of the check-in.  Return the name of that file.
**
** Space to hold the returned filename is obtained from fossil_malloc()
  }
  blob_reset(&text);
  blob_read_from_file(&text, zFile);
** and should be freed by the caller.  The caller should also unlink
** the file when it is done.
  blob_remove_cr(&text);
  unlink(zFile);
  free(zFile);
  blob_zero(pComment);
  while( blob_line(&text, &line) ){
    int i, n;
    char *z;
    n = blob_size(&line);
    z = blob_buffer(&line);
*/
static char *prepare_commit_description_file(
  CheckinInfo *p,     /* Information about this commit */
  int parent_rid,     /* parent check-in */
  Blob *pComment,     /* Check-in comment */
  int dryRunFlag      /* True for a dry-run only */
){
  Blob *pDesc;
  char *zTags;
  char *zFilename;
  Blob desc;
  blob_init(&desc, 0, 0);
    for(i=0; i<n && isspace(z[i]);  i++){}
    if( i<n && z[i]=='#' ) continue;
    if( i<n || blob_size(pComment)>0 ){
      blob_appendf(pComment, "%b", &line);
    }
  pDesc = &desc;
  blob_appendf(pDesc, "checkout %s\n", g.zLocalRoot);
  blob_appendf(pDesc, "repository %s\n", g.zRepositoryName);
  blob_appendf(pDesc, "user %s\n",
               p->zUserOvrd ? p->zUserOvrd : login_name());
  blob_appendf(pDesc, "branch %s\n",
    (p->zBranch && p->zBranch[0]) ? p->zBranch : "trunk");
  zTags = info_tags_of_checkin(parent_rid, 1);
  if( zTags || p->azTag ){
    blob_append(pDesc, "tags ", -1);
    if(zTags){
      blob_appendf(pDesc, "%z%s", zTags, p->azTag ? ", " : "");
    }
    if(p->azTag){
      int i = 0;
      for( ; p->azTag[i]; ++i ){
        blob_appendf(pDesc, "%s%s", p->azTag[i],
                     p->azTag[i+1] ? ", " : "");
      }
    }
    blob_appendf(pDesc, "\n");
  }
  status_report(pDesc, C_DEFAULT | C_FATAL);
  if( g.markPrivate ){
    blob_append(pDesc, "private-branch\n", -1);
  }
  if( p->integrateFlag ){
  blob_reset(&text);
  zComment = blob_str(pComment);
  i = strlen(zComment);
  while( i>0 && isspace(zComment[i-1]) ){ i--; }
  blob_resize(pComment, i);
    blob_append(pDesc, "integrate\n", -1);
  }
  if( pComment && blob_size(pComment)>0 ){
    blob_appendf(pDesc, "checkin-comment\n%s\n", blob_str(pComment));
  }
  if( dryRunFlag ){
    zFilename = 0;
    fossil_print("******* Commit Description *******\n%s"
                 "***** End Commit Description *****\n",
                 blob_str(pDesc));
  }else{
    unsigned int r[2];
    sqlite3_randomness(sizeof(r), r);
    zFilename = mprintf("%scommit-description-%08x%08x.txt",
                        g.zLocalRoot, r[0], r[1]);
    blob_write_to_file(pDesc, zFilename);
  }
  blob_reset(pDesc);
  return zFilename;
}


/*
** Populate the Global.aCommitFile[] based on the command line arguments
** to a [commit] command. Global.aCommitFile is an array of integers
** sized at (N+1), where N is the number of arguments passed to [commit].
** The contents are the [id] values from the vfile table corresponding
** to the filenames passed as arguments.
**
** The last element of aCommitFile[] is always 0 - indicating the end
** of the array.
**
** If there were no arguments passed to [commit], aCommitFile is not
** allocated and remains NULL. Other parts of the code interpret this
** to mean "all files".
**
** Returns 1 if there was a warning, 0 otherwise.
*/
void select_commit_files(void){
int select_commit_files(void){
  int result = 0;
  assert( g.aCommitFile==0 );
  if( g.argc>2 ){
    int ii;
    Blob b;
    int ii, jj=0;
    Blob fname;
    blob_zero(&b);
    g.aCommitFile = malloc(sizeof(int)*(g.argc-1));
    Stmt q;
    Bag toCommit;

    blob_zero(&fname);
    bag_init(&toCommit);
    for(ii=2; ii<g.argc; ii++){
      int iId;
      file_tree_name(g.argv[ii], &b, 1);
      iId = db_int(-1, "SELECT id FROM vfile WHERE pathname=%Q", blob_str(&b));
      if( iId<0 ){
        fossil_fatal("fossil knows nothing about: %s", g.argv[ii]);
      int cnt = 0;
      file_tree_name(g.argv[ii], &fname, 0, 1);
      if( fossil_strcmp(blob_str(&fname),".")==0 ){
        bag_clear(&toCommit);
        return result;
      }
      db_prepare(&q,
        "SELECT id FROM vfile WHERE pathname=%Q %s"
        " OR (pathname>'%q/' %s AND pathname<'%q0' %s)",
        blob_str(&fname), filename_collation(), blob_str(&fname),
        filename_collation(), blob_str(&fname), filename_collation());
      while( db_step(&q)==SQLITE_ROW ){
        cnt++;
        bag_insert(&toCommit, db_column_int(&q, 0));
      }
      db_finalize(&q);
      if( cnt==0 ){
        fossil_warning("fossil knows nothing about: %s", g.argv[ii]);
        result = 1;
      }
      g.aCommitFile[ii-2] = iId;
      blob_reset(&b);
      blob_reset(&fname);
    }
    g.aCommitFile = fossil_malloc( (bag_count(&toCommit)+1) *
                                      sizeof(g.aCommitFile[0]) );
    for(ii=bag_first(&toCommit); ii>0; ii=bag_next(&toCommit, ii)){
      g.aCommitFile[jj++] = ii;
    }
    g.aCommitFile[ii-2] = 0;
    g.aCommitFile[jj] = 0;
    bag_clear(&toCommit);
  }
  return result;
}

/*
** Return true if the check-in with RID=rid is a leaf.
** A leaf has no children in the same branch. 
** Returns true if the check-in identified by the first parameter is
** older than the given (valid) date/time string, else returns false.
** Also returns true if rid does not refer to a check-in, but it is not
** intended to be used for that case.
*/
int is_a_leaf(int rid){
  int rc;
  static const char zSql[] = 
    @ SELECT 1 FROM plink
    @  WHERE pid=%d
    @    AND coalesce((SELECT value FROM tagxref
int checkin_is_younger(
  int rid,              /* The record ID of the ancestor */
  const char *zDate     /* Date & time of the current check-in */
){
  return db_exists(
    "SELECT 1 FROM event"
    " WHERE datetime(mtime)>=%Q"
    "   AND type='ci' AND objid=%d",
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  rc = db_int(0, zSql, rid, TAG_BRANCH, TAG_BRANCH);
  return rc==0;
    zDate, rid
  ) ? 0 : 1;
}

/*
** Make sure the current check-in with timestamp zDate is younger than its
** ancestor identified rid and zUuid.  Throw a fatal error if not.
*/
static void checkin_verify_younger(
  int rid,              /* The record ID of the ancestor */
  const char *zUuid,    /* The artifact ID of the ancestor */
  const char *zUuid,    /* The artifact hash of the ancestor */
  const char *zDate     /* Date & time of the current check-in */
){
#ifndef FOSSIL_ALLOW_OUT_OF_ORDER_DATES
  if(checkin_is_younger(rid,zDate)==0){
    fossil_fatal("ancestor check-in [%S] (%s) is not older (clock skew?)"
                 " Use --allow-older to override.", zUuid, zDate);
  }
#endif
}



/*
** zDate should be a valid date string.  Convert this string into the
** format YYYY-MM-DDTHH:MM:SS.  If the string is not a valid date,
** print a fatal error and quit.
*/
char *date_in_standard_format(const char *zInputDate){
  char *zDate;
  if( g.perm.Setup && fossil_strcmp(zInputDate,"now")==0 ){
    zInputDate = PD("date_override","now");
  }
  zDate = db_text(0, "SELECT strftime('%%Y-%%m-%%dT%%H:%%M:%%f',%Q)",
                  zInputDate);
  if( zDate[0]==0 ){
    fossil_fatal(
      "unrecognized date format (%s): use \"YYYY-MM-DD HH:MM:SS.SSS\"",
      zInputDate
    );
  }
  return zDate;
}

/*
** COMMAND: test-date-format
**
** Usage: %fossil test-date-format DATE-STRING...
**
** Convert the DATE-STRING into the standard format used in artifacts
** and display the result.
*/
void test_date_format(void){
  int b;
  b = db_exists(
    "SELECT 1 FROM event"
    " WHERE datetime(mtime)>=%Q"
    "   AND type='ci' AND objid=%d",
    zDate, rid
  );
  if( b ){
  int i;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  for(i=2; i<g.argc; i++){
    fossil_print("%s -> %s\n", g.argv[i], date_in_standard_format(g.argv[i]));
  }
}

#if INTERFACE
/*
** The following structure holds some of the information needed to construct a
** check-in manifest.
*/
struct CheckinInfo {
  Blob *pComment;             /* Check-in comment text */
  const char *zMimetype;      /* Mimetype of check-in command.  May be NULL */
  int verifyDate;             /* Verify that child is younger */
  int closeFlag;              /* Close the branch being committed */
  int integrateFlag;          /* Close merged-in branches */
  int verboseFlag;            /* Show diff in editor for check-in comment */
  Blob *pCksum;               /* Repository checksum.  May be 0 */
  const char *zDateOvrd;      /* Date override.  If 0 then use 'now' */
  const char *zUserOvrd;      /* User override.  If 0 then use login_name() */
  const char *zBranch;        /* Branch name.  May be 0 */
  const char *zColor;         /* One-time background color.  May be 0 */
  const char *zBrClr;         /* Persistent branch color.  May be 0 */
  const char **azTag;         /* Tags to apply to this check-in */
};
#endif /* INTERFACE */

/*
** Create a manifest.
*/
static void create_manifest(
  Blob *pOut,                 /* Write the manifest here */
  const char *zBaselineUuid,  /* Hash of baseline, or zero */
  Manifest *pBaseline,        /* Make it a delta manifest if not zero */
  int vid,                    /* BLOB.id for the parent check-in */
  CheckinInfo *p,             /* Information about the check-in */
  int *pnFBcard               /* OUT: Number of generated B- and F-cards */
){
  char *zDate;                /* Date of the check-in */
  char *zParentUuid = 0;      /* Hash of parent check-in */
  Blob filename;              /* A single filename */
  int nBasename;              /* Size of base filename */
  Stmt q;                     /* Various queries */
  Blob mcksum;                /* Manifest checksum */
  ManifestFile *pFile;        /* File from the baseline */
  int nFBcard = 0;            /* Number of B-cards and F-cards */
  int i;                      /* Loop counter */
  const char *zColor;         /* Modified value of p->zColor */

  assert( pBaseline==0 || pBaseline->zBaseline==0 );
  assert( pBaseline==0 || zBaselineUuid!=0 );
  blob_zero(pOut);
  if( vid ){
    zParentUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d AND "
      "EXISTS(SELECT 1 FROM event WHERE event.type='ci' and event.objid=%d)",
      vid, vid);
    if( !zParentUuid ){
      fossil_fatal("Could not find a valid check-in for RID %d. "
                   "Possible check-out/repo mismatch.", vid);
    }
  }
  if( pBaseline ){
    blob_appendf(pOut, "B %s\n", zBaselineUuid);
    manifest_file_rewind(pBaseline);
    pFile = manifest_file_next(pBaseline, 0);
    nFBcard++;
  }else{
    pFile = 0;
  }
  if( blob_size(p->pComment)!=0 ){
    blob_appendf(pOut, "C %F\n", blob_str(p->pComment));
  }else{
    blob_append(pOut, "C (no\\scomment)\n", 16);
  }
  zDate = date_in_standard_format(p->zDateOvrd ? p->zDateOvrd : "now");
  blob_appendf(pOut, "D %s\n", zDate);
  zDate[10] = ' ';
  db_prepare(&q,
    "SELECT pathname, uuid, origname, blob.rid, isexe, islink,"
    "       is_selected(vfile.id)"
    "  FROM vfile JOIN blob ON vfile.mrid=blob.rid"
    " WHERE (NOT deleted OR NOT is_selected(vfile.id))"
    "   AND vfile.vid=%d"
    " ORDER BY if_selected(vfile.id, pathname, origname)",
    vid);
  blob_zero(&filename);
  blob_appendf(&filename, "%s", g.zLocalRoot);
  nBasename = blob_size(&filename);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zOrig = db_column_text(&q, 2);
    int frid = db_column_int(&q, 3);
    int isExe = db_column_int(&q, 4);
    int isLink = db_column_int(&q, 5);
    int isSelected = db_column_int(&q, 6);
    const char *zPerm;
    int cmp;

    blob_resize(&filename, nBasename);
    blob_append(&filename, zName, -1);

#if !defined(_WIN32)
    /* For unix, extract the "executable" and "symlink" permissions
    ** directly from the filesystem.  On windows, permissions are
    ** unchanged from the original.  However, only do this if the file
    ** itself is actually selected to be part of this check-in.
    */
    if( isSelected ){
      int mPerm;

      mPerm = file_perm(blob_str(&filename), RepoFILE);
      isExe = ( mPerm==PERM_EXE );
      isLink = ( mPerm==PERM_LNK );
    }
#endif
    if( isExe ){
      zPerm = " x";
    }else if( isLink ){
      zPerm = " l"; /* note: symlinks don't have executable bit on unix */
    }else{
      zPerm = "";
    }
    if( !g.markPrivate ) content_make_public(frid);
    while( pFile && fossil_strcmp(pFile->zName,zName)<0 ){
      blob_appendf(pOut, "F %F\n", pFile->zName);
      pFile = manifest_file_next(pBaseline, 0);
      nFBcard++;
    }
    cmp = 1;
    if( pFile==0
      || (cmp = fossil_strcmp(pFile->zName,zName))!=0
      || fossil_strcmp(pFile->zUuid, zUuid)!=0
    ){
      if( zOrig && !isSelected ){ zName = zOrig; zOrig = 0; }
      if( zOrig==0 || fossil_strcmp(zOrig,zName)==0 ){
        blob_appendf(pOut, "F %F %s%s\n", zName, zUuid, zPerm);
      }else{
        if( zPerm[0]==0 ){ zPerm = " w"; }
        blob_appendf(pOut, "F %F %s%s %F\n", zName, zUuid, zPerm, zOrig);
      }
      nFBcard++;
    }
    if( cmp==0 ) pFile = manifest_file_next(pBaseline,0);
  }
  blob_reset(&filename);
  db_finalize(&q);
  while( pFile ){
    blob_appendf(pOut, "F %F\n", pFile->zName);
    pFile = manifest_file_next(pBaseline, 0);
    nFBcard++;
  }
  if( p->zMimetype && p->zMimetype[0] ){
    blob_appendf(pOut, "N %F\n", p->zMimetype);
  }
  if( vid ){
    fossil_fatal("ancestor check-in [%.10s] (%s) is younger (clock skew?)",
                 zUuid, zDate);
  }
    blob_appendf(pOut, "P %s", zParentUuid);
    if( p->verifyDate ) checkin_verify_younger(vid, zParentUuid, zDate);
    free(zParentUuid);
    db_prepare(&q, "SELECT merge FROM vmerge WHERE id=0 OR id<-2");
    while( db_step(&q)==SQLITE_ROW ){
      char *zMergeUuid;
      int mid = db_column_int(&q, 0);
      if( (!g.markPrivate && content_is_private(mid)) || (mid == vid) ){
        continue;
      }
      zMergeUuid = rid_to_uuid(mid);
      if( zMergeUuid ){
        blob_appendf(pOut, " %s", zMergeUuid);
        if( p->verifyDate ) checkin_verify_younger(mid, zMergeUuid, zDate);
        free(zMergeUuid);
      }
    }
    db_finalize(&q);
    blob_appendf(pOut, "\n");
  }
  free(zDate);

  db_prepare(&q,
    "SELECT CASE vmerge.id WHEN -1 THEN '+' ELSE '-' END || mhash, merge"
    "  FROM vmerge"
    " WHERE (vmerge.id=-1 OR vmerge.id=-2)"
    " ORDER BY 1");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zCherrypickUuid = db_column_text(&q, 0);
    int mid = db_column_int(&q, 1);
    if( (!g.markPrivate && content_is_private(mid)) || (mid == vid) ) continue;
    blob_appendf(pOut, "Q %s\n", zCherrypickUuid);
  }
  db_finalize(&q);

  if( p->pCksum ) blob_appendf(pOut, "R %b\n", p->pCksum);
  zColor = p->zColor;
  if( p->zBranch && p->zBranch[0] ){
    /* Set tags for the new branch */
    if( p->zBrClr && p->zBrClr[0] ){
      zColor = 0;
      blob_appendf(pOut, "T *bgcolor * %F\n", p->zBrClr);
    }
    blob_appendf(pOut, "T *branch * %F\n", p->zBranch);
    blob_appendf(pOut, "T *sym-%F *\n", p->zBranch);
  }
  if( zColor && zColor[0] ){
    /* One-time background color */
    blob_appendf(pOut, "T +bgcolor * %F\n", zColor);
  }
  if( p->closeFlag ){
    blob_appendf(pOut, "T +closed *\n");
  }
  db_prepare(&q, "SELECT mhash,merge FROM vmerge"
                 " WHERE id %s ORDER BY 1",
                 p->integrateFlag ? "IN(0,-4)" : "=(-4)");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zIntegrateUuid = db_column_text(&q, 0);
    int rid = db_column_int(&q, 1);
    if( is_a_leaf(rid) && !db_exists("SELECT 1 FROM tagxref "
        " WHERE tagid=%d AND rid=%d AND tagtype>0", TAG_CLOSED, rid)){
#if 0
      /* Make sure the check-in manifest of the resulting merge child does not
      ** include a +close tag referring to the leaf check-in on a private
      ** branch, so as not to generate a missing artifact reference on
      ** repository clones without that private branch.  The merge command
      ** should have dropped the --integrate option, at this point. */
      assert( !content_is_private(rid) );
#endif
      blob_appendf(pOut, "T +closed %s\n", zIntegrateUuid);
}

    }
  }
  db_finalize(&q);

  if( p->azTag ){
    for(i=0; p->azTag[i]; i++){
      /* Add a symbolic tag to this check-in.  The tag names have already
      ** been sorted and converted using the %F format */
      assert( i==0 || strcmp(p->azTag[i-1], p->azTag[i])<=0 );
      blob_appendf(pOut, "T +sym-%s *\n", p->azTag[i]);
    }
  }
  if( p->zBranch && p->zBranch[0] ){
    /* For a new branch, cancel all prior propagating tags */
    db_prepare(&q,
        "SELECT tagname FROM tagxref, tag"
        " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
        "   AND tagtype==2 AND tagname GLOB 'sym-*'"
        "   AND tagname!='sym-'||%Q"
        " ORDER BY tagname",
        vid, p->zBranch);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zBrTag = db_column_text(&q, 0);
      blob_appendf(pOut, "T -%F *\n", zBrTag);
    }
    db_finalize(&q);
  }
  blob_appendf(pOut, "U %F\n", p->zUserOvrd ? p->zUserOvrd : login_name());
  md5sum_blob(pOut, &mcksum);
  blob_appendf(pOut, "Z %b\n", &mcksum);
  if( pnFBcard ) *pnFBcard = nFBcard;
}

/*
** Issue a warning and give the user an opportunity to abandon out
** if a Unicode (UTF-16) byte-order-mark (BOM) or a \r\n line ending
** is seen in a text file.
**
** Return 1 if the user pressed 'c'. In that case, the file will have
** been converted to UTF-8 (if it was UTF-16) with LF line-endings,
** and the original file will have been renamed to "<filename>-original".
*/
static int commit_warning(
  Blob *pContent,        /* The content of the file being committed. */
  int crlfOk,            /* Non-zero if CR/LF warnings should be disabled. */
  int binOk,             /* Non-zero if binary warnings should be disabled. */
  int encodingOk,        /* Non-zero if encoding warnings should be disabled. */
  int sizeOk,            /* Non-zero if oversize warnings are disabled */
  int noPrompt,          /* 0 to always prompt, 1 for 'N', 2 for 'Y'. */
  const char *zFilename, /* The full name of the file being committed. */
  Blob *pReason          /* Reason for warning, if any (non-fatal only). */
){
  int bReverse;           /* UTF-16 byte order is reversed? */
  int fUnicode;           /* return value of could_be_utf16() */
  int fBinary;            /* does the blob content appear to be binary? */
  int lookFlags;          /* output flags from looks_like_utf8/utf16() */
  int fHasAnyCr;          /* the blob contains one or more CR chars */
  int fHasLoneCrOnly;     /* all detected line endings are CR only */
  int fHasCrLfOnly;       /* all detected line endings are CR/LF pairs */
  int fHasInvalidUtf8 = 0;/* contains invalid UTF-8 */
  int fHasNul;            /* contains NUL chars? */
  int fHasLong;           /* overly long line? */
  char *zMsg;             /* Warning message */
  Blob fname;             /* Relative pathname of the file */
  static int allOk = 0;   /* Set to true to disable this routine */

  if( allOk ) return 0;
  if( sizeOk ){
    fUnicode = could_be_utf16(pContent, &bReverse);
    if( fUnicode ){
      lookFlags = looks_like_utf16(pContent, bReverse, LOOK_NUL);
    }else{
      lookFlags = looks_like_utf8(pContent, LOOK_NUL);
      if( !(lookFlags & LOOK_BINARY) && invalid_utf8(pContent) ){
        fHasInvalidUtf8 = 1;
      }
    }
    fHasAnyCr = (lookFlags & LOOK_CR);
    fBinary = (lookFlags & LOOK_BINARY);
    fHasLoneCrOnly = ((lookFlags & LOOK_EOL) == LOOK_LONE_CR);
    fHasCrLfOnly = ((lookFlags & LOOK_EOL) == LOOK_CRLF);
    fHasNul = (lookFlags & LOOK_NUL);
    fHasLong = (lookFlags & LOOK_LONG);
  }else{
    fUnicode = fHasAnyCr = fBinary = fHasInvalidUtf8 = 0;
    fHasLoneCrOnly = fHasCrLfOnly = fHasNul = fHasLong = 0;
  }
  if( !sizeOk || fUnicode || fHasAnyCr || fBinary || fHasInvalidUtf8 ){
    const char *zWarning = 0;
    const char *zDisable = 0;
    const char *zConvert = "c=convert/";
    const char *zIn = "in";
    Blob ans;
    char cReply;

    if( fBinary ){
      if( binOk ){
        return 0; /* We don't want binary warnings for this file. */
      }
      if( !fHasNul && fHasLong ){
        zWarning = "long lines";
        zConvert = ""; /* We cannot convert overlong lines. */
      }else{
        zWarning = "binary data";
        zConvert = ""; /* We cannot convert binary files. */
      }
      zDisable = "\"binary-glob\" setting";
    }else if( fUnicode && fHasAnyCr ){
      if( crlfOk && encodingOk ){
        return 0; /* We don't want CR/LF and Unicode warnings for this file. */
      }
      if( fHasLoneCrOnly ){
        zWarning = "CR line endings and Unicode";
      }else if( fHasCrLfOnly ){
        zWarning = "CR/LF line endings and Unicode";
      }else{
        zWarning = "mixed line endings and Unicode";
      }
      zDisable = "\"crlf-glob\" and \"encoding-glob\" settings";
    }else if( fHasInvalidUtf8 ){
      if( encodingOk ){
        return 0; /* We don't want encoding warnings for this file. */
      }
      zWarning = "invalid UTF-8";
      zDisable = "\"encoding-glob\" setting";
    }else if( fHasAnyCr ){
      if( crlfOk ){
        return 0; /* We don't want CR/LF warnings for this file. */
      }
      if( fHasLoneCrOnly ){
        zWarning = "CR line endings";
      }else if( fHasCrLfOnly ){
        zWarning = "CR/LF line endings";
      }else{
        zWarning = "mixed line endings";
      }
      zDisable = "\"crlf-glob\" setting";
    }else if( !sizeOk ){
      zWarning = "oversize";
      zIn = "file";
    }else{
      if( encodingOk ){
        return 0; /* We don't want encoding warnings for this file. */
      }
      zWarning = "Unicode";
      zDisable = "\"encoding-glob\" setting";
    }
    file_relative_name(zFilename, &fname, 0);
    if( !sizeOk ){
      zMsg = mprintf(
           "%s is more than %,lld bytes in size.\n"
           "Commit anyhow (a=all/y/N)? ",
           blob_str(&fname), db_large_file_size());
    }else{
      zMsg = mprintf(
           "%s contains %s. Use --no-warnings or the %s to"
                   " disable this warning.\n"
           "Commit anyhow (a=all/%sy/N)? ",
           blob_str(&fname), zWarning, zDisable, zConvert);
    }
    if( noPrompt==0 ){
      prompt_user(zMsg, &ans);
      cReply = blob_str(&ans)[0];
      blob_reset(&ans);
    }else if( noPrompt==2 ){
      cReply = 'Y';
    }else{
      cReply = 'N';
    }
    fossil_free(zMsg);
    if( cReply=='a' || cReply=='A' ){
      allOk = 1;
    }else if( *zConvert && (cReply=='c' || cReply=='C') ){
      char *zOrig = file_newname(zFilename, "original", 1);
      FILE *f;
      blob_write_to_file(pContent, zOrig);
      fossil_free(zOrig);
      f = fossil_fopen(zFilename, "wb");
      if( f==0 ){
        fossil_warning("cannot open %s for writing", zFilename);
      }else{
        if( fUnicode ){
          int bomSize;
          const unsigned char *bom = get_utf8_bom(&bomSize);
          fwrite(bom, 1, bomSize, f);
          blob_to_utf8_no_bom(pContent, 0);
        }else if( fHasInvalidUtf8 ){
          blob_cp1252_to_utf8(pContent);
        }
        if( fHasAnyCr ){
          blob_to_lf_only(pContent);
        }
        fwrite(blob_buffer(pContent), 1, blob_size(pContent), f);
        fclose(f);
      }
      return 1;
    }else if( cReply!='y' && cReply!='Y' ){
      fossil_fatal("Abandoning commit due to %s %s %s",
                   zWarning, zIn, blob_str(&fname));
    }else if( noPrompt==2 ){
      if( pReason ){
        blob_append(pReason, zWarning, -1);
      }
      return 1;
    }
    blob_reset(&fname);
  }
  return 0;
}

/*
** COMMAND: test-commit-warning
**
** Usage: %fossil test-commit-warning ?OPTIONS?
**
** Check each file in the check-out, including unmodified ones, using all
** the pre-commit checks.
**
** Options:
**    --no-settings     Do not consider any glob settings.
**    -v|--verbose      Show per-file results for all pre-commit checks.
**
** See also: commit, extras
*/
void test_commit_warning(void){
  int rc = 0;
  int noSettings;
  int verboseFlag;
  i64 mxSize;
  Stmt q;
  noSettings = find_option("no-settings",0,0)!=0;
  verboseFlag = find_option("verbose","v",0)!=0;
  verify_all_options();
  db_must_be_within_tree();
  mxSize = db_large_file_size();
  db_prepare(&q,
      "SELECT %Q || pathname, pathname, %s, %s, %s FROM vfile"
      " WHERE NOT deleted",
      g.zLocalRoot,
      glob_expr("pathname", noSettings ? 0 : db_get("crlf-glob",
                                             db_get("crnl-glob",""))),
      glob_expr("pathname", noSettings ? 0 : db_get("binary-glob","")),
      glob_expr("pathname", noSettings ? 0 : db_get("encoding-glob",""))
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFullname;
    const char *zName;
    Blob content;
    Blob reason;
    int crlfOk, binOk, encodingOk, sizeOk;
    int fileRc;

    zFullname = db_column_text(&q, 0);
    zName = db_column_text(&q, 1);
    crlfOk = db_column_int(&q, 2);
    binOk = db_column_int(&q, 3);
    encodingOk = db_column_int(&q, 4);
    sizeOk = mxSize<=0 || file_size(zFullname, ExtFILE)<=mxSize;
    blob_zero(&content);
    blob_read_from_file(&content, zFullname, RepoFILE);
    blob_zero(&reason);
    fileRc = commit_warning(&content, crlfOk, binOk, encodingOk, sizeOk, 2,
                            zFullname, &reason);
    if( fileRc || verboseFlag ){
      fossil_print("%d\t%s\t%s\n", fileRc, zName, blob_str(&reason));
    }
    blob_reset(&reason);
    rc |= fileRc;
  }
  db_finalize(&q);
  fossil_print("%d\n", rc);
}

/*
** qsort() comparison routine for an array of pointers to strings.
*/
static int tagCmp(const void *a, const void *b){
  char **pA = (char**)a;
  char **pB = (char**)b;
  return fossil_strcmp(pA[0], pB[0]);
}

/*
** COMMAND: ci
** COMMAND: ci#
** COMMAND: commit
**
** Usage: %fossil commit ?OPTIONS? ?FILE...?
**    or: %fossil ci ?OPTIONS? ?FILE...?
**
** Create a new version containing all of the changes in the current
** checkout.  You will be prompted to enter a check-in comment unless
** the comment has been specified on the command-line using "-m".
** The editor defined in the "editor" fossil option (see %fossil help set)
** will be used, or from the "VISUAL" or "EDITOR" environment variables
** (in that order) if no editor is set.
** check-out.  You will be prompted to enter a check-in comment unless
** the comment has been specified on the command-line using "-m" or a
** file containing the comment using -M.  The editor defined in the
** "editor" fossil option (see %fossil help set) will be used, or from
** the "VISUAL" or "EDITOR" environment variables (in that order) if
** no editor is set.
**
** You will be prompted for your GPG passphrase in order to sign the
** new manifest unless the "--nosign" options is used.  All files that
** have changed will be committed unless some subset of files is
** specified on the command line.
** All files that have changed will be committed unless some subset of
** files is specified on the command line.
**
** The --branch option followed by a branch name cases the new check-in
** to be placed in the named branch.  The --bgcolor option can be followed
** by a color name (ex:  '#ffc0c0') to specify the background color of
** entries in the new branch when shown in the web timeline interface.
** The --branch option followed by a branch name causes the new
** check-in to be placed in a newly-created branch with the name
** passed to the --branch option.
**
** Use the --branchcolor option followed by a color name (ex:
** '#ffc0c0') to specify the background color of entries in the new
** branch when shown in the web timeline interface.  The use of
** the --branchcolor option is not recommended.  Instead, let Fossil
** choose the branch color automatically.
**
** The --bgcolor option works like --branchcolor but only sets the
** background color for a single check-in.  Subsequent check-ins revert
** to the default color.
**
** A check-in is not permitted to fork unless the --force or -f
** option appears.  A check-in is not allowed against a closed check-in.
** A check-in is not permitted to fork unless the --allow-fork option
** appears.  An empty check-in (i.e. with nothing changed) is not
** allowed unless the --allow-empty option appears.  A check-in may not
** be older than its ancestor unless the --allow-older option appears.
** If any of files in the check-in appear to contain unresolved merge
** conflicts, the check-in will not be allowed unless the
** --allow-conflict option is present.  In addition, the entire
** check-in process may be aborted if a file contains content that
** appears to be binary, Unicode text, or text with CR/LF line endings
** unless the interactive user chooses to proceed.  If there is no
** interactive user or these warnings should be skipped for some other
** reason, the --no-warnings option may be used.  A check-in is not
** allowed against a closed leaf.
**
** If a commit message is blank, you will be prompted:
** ("continue (y/N)?") to confirm you really want to commit with a
** blank commit message.  The default value is "N", do not commit.
**
** The --private option creates a private check-in that is never synced.
** Children of private check-ins are automatically private.
**
** The --tag option applies the symbolic tag name to the check-in.
** Options:
**
** The --hash option detects edited files by computing each file's
** artifact hash rather than just checking for changes to its size or mtime.
**
** Options:
**    --allow-conflict           Allow unresolved merge conflicts
**    --allow-empty              Allow a commit with no changes
**    --comment|-m COMMENT-TEXT
**    --branch NEW-BRANCH-NAME
**    --bgcolor COLOR
**    --nosign
**    --force|-f
**    --private
**    
**    --allow-fork               Allow the commit to fork
**    --allow-older              Allow a commit older than its ancestor
**    --baseline                 Use a baseline manifest in the commit process
**    --bgcolor COLOR            Apply COLOR to this one check-in only
**    --branch NEW-BRANCH-NAME   Check in to this new branch
**    --branchcolor COLOR        Apply given COLOR to the branch
**    --close                    Close the branch being committed
**    --date-override DATETIME   DATE to use instead of 'now'
**    --delta                    Use a delta manifest in the commit process
**    --hash                     Verify file status using hashing rather
**                               than relying on file mtimes
**    --ignore-clock-skew        If a clock skew is detected, ignore it and
**                               behave as if the user had entered 'yes' to
**                               the question of whether to proceed despite
**                               the skew.
**    --ignore-oversize          Do not warning the user about oversized files
**    --integrate                Close all merged-in branches
**    -m|--comment COMMENT-TEXT  Use COMMENT-TEXT as commit comment
**    -M|--message-file FILE     Read the commit comment from given file
**    --mimetype MIMETYPE        Mimetype of check-in comment
**    -n|--dry-run               If given, display instead of run actions
**    -v|--verbose               Show a diff in the commit message prompt
**    --no-prompt                This option disables prompting the user for
**                               input and assumes an answer of 'No' for every
**                               question.
**    --no-warnings              Omit all warnings about file contents
**    --no-verify                Do not run before-commit hooks
**    --nosign                   Do not attempt to sign this commit with gpg
**    --nosync                   Do not auto-sync prior to committing
**    --override-lock            Allow a check-in even though parent is locked
**    --private                  Do not sync changes and their descendants
**    --tag TAG-NAME             Assign given tag TAG-NAME to the check-in
**    --trace                    Debug tracing
**    --user-override USER       USER to use instead of the current default
**
** DATETIME may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
** year-month-day form, it may be truncated, the "T" may be replaced by
** a space, and it may also name a timezone offset from UTC as "-HH:MM"
** (westward) or "+HH:MM" (eastward). Either no timezone suffix or "Z"
** means UTC.
**
** See also: [[branch]], [[changes]], [[update]], [[extras]], [[sync]]
*/
void commit_cmd(void){
  int rc;
  int vid, nrid, nvid;
  Blob comment;
  const char *zComment;
  Stmt q;
  int hasChanges;        /* True if unsaved changes exist */
  int vid;               /* blob-id of parent version */
  int nrid;              /* blob-id of a modified file */
  int nvid;              /* Blob-id of the new check-in */
  Blob comment;          /* Check-in comment */
  const char *zComment;  /* Check-in comment */
  Stmt q;                /* Various queries */
  Stmt q2;
  char *zUuid, *zDate;
  char *zUuid;           /* Hash of the new check-in */
  int useHash = 0;       /* True to verify file status using hashing */
  int noSign = 0;        /* True to omit signing the manifest using GPG */
  int privateFlag = 0;   /* True if the --private option is present */
  int privateParent = 0; /* True if the parent check-in is private */
  int isAMerge = 0;      /* True if checking in a merge */
  int noWarningFlag = 0; /* True if skipping all warnings */
  int noVerify = 0;      /* Do not run before-commit hooks */
  int bTrace = 0;        /* Debug tracing */
  int noPrompt = 0;      /* True if skipping all prompts */
  int forceFlag = 0;     /* Force a fork */
  int forceFlag = 0;     /* Undocumented: Disables all checks */
  int forceDelta = 0;    /* Force a delta-manifest */
  int forceBaseline = 0; /* Force a baseline-manifest */
  int allowConflict = 0; /* Allow unresolve merge conflicts */
  int allowEmpty = 0;    /* Allow a commit with no changes */
  int allowFork = 0;     /* Allow the commit to fork */
  int allowOlder = 0;    /* Allow a commit older than its ancestor */
  char *zManifestFile;   /* Name of the manifest file */
  int nBasename;         /* Length of "g.zLocalRoot/" */
  const char *zBranch;   /* Create a new branch with this name */
  int useCksum;          /* True if checksums should be computed and verified */
  int outputManifest;    /* True to output "manifest" and "manifest.uuid" */
  int dryRunFlag;        /* True for a test run.  Debugging only */
  CheckinInfo sCiInfo;   /* Information about this check-in */
  const char *zBgColor;  /* Set background color when branching */
  const char *zDateOvrd; /* Override date string */
  const char *zUserOvrd; /* Override user name */
  const char *zComFile;  /* Read commit message from this file */
  Blob filename;         /* complete filename */
  Blob manifest;
  int nTag = 0;          /* Number of --tag arguments */
  const char *zTag;      /* A single --tag argument */
  ManifestFile *pFile;   /* File structure in the manifest */
  Manifest *pManifest;   /* Manifest structure */
  Blob manifest;         /* Manifest in baseline form */
  Blob muuid;            /* Manifest uuid */
  Blob mcksum;           /* Self-checksum on the manifest */
  Blob cksum1, cksum2;   /* Before and after commit checksums */
  Blob cksum1b;          /* Checksum recorded in the manifest */
  int szD;               /* Size of the delta manifest */
  int szB;               /* Size of the baseline manifest */
  int nConflict = 0;     /* Number of unresolved merge conflicts */
  int abortCommit = 0;   /* Abort the commit due to text format conversions */
  Blob ans;              /* Answer to continuation prompts */
  char cReply;           /* First character of ans */
  int bRecheck = 0;      /* Repeat fork and closed-branch checks*/
  int bIgnoreSkew = 0;   /* --ignore-clock-skew flag */
  int mxSize;
 

  memset(&sCiInfo, 0, sizeof(sCiInfo));
  url_proxy_options();
  /* --sha1sum is an undocumented alias for --hash for backwards compatiblity */
  useHash = find_option("hash",0,0)!=0 || find_option("sha1sum",0,0)!=0;
  noSign = find_option("nosign",0,0)!=0;
  if( find_option("nosync",0,0) ) g.fNoSync = 1;
  privateFlag = find_option("private",0,0)!=0;
  forceDelta = find_option("delta",0,0)!=0;
  forceBaseline = find_option("baseline",0,0)!=0;
  db_must_be_within_tree();
  if( db_get_boolean("dont-commit",0) ){
    fossil_fatal("committing is prohibited: the 'dont-commit' option is set");
  }
  if( forceDelta ){
    if( forceBaseline ){
      fossil_fatal("cannot use --delta and --baseline together");
    }
    if( db_get_boolean("forbid-delta-manifests",0) ){
      fossil_fatal("delta manifests are prohibited in this repository");
    }
  }
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( !dryRunFlag ){
    dryRunFlag = find_option("test",0,0)!=0; /* deprecated */
  }
  zComment = find_option("comment","m",1);
  forceFlag = find_option("force", "f", 0)!=0;
  allowConflict = find_option("allow-conflict",0,0)!=0;
  allowEmpty = find_option("allow-empty",0,0)!=0;
  allowFork = find_option("allow-fork",0,0)!=0;
  if( find_option("override-lock",0,0)!=0 ) allowFork = 1;
  allowOlder = find_option("allow-older",0,0)!=0;
  noPrompt = find_option("no-prompt", 0, 0)!=0;
  noWarningFlag = find_option("no-warnings", 0, 0)!=0;
  noVerify = find_option("no-verify",0,0)!=0;
  bTrace = find_option("trace",0,0)!=0;
  zBranch = find_option("branch","b",1);
  zBgColor = find_option("bgcolor",0,1);
  zComFile = find_option("message-file", "M", 1);
  if( find_option("private",0,0) ){
    g.markPrivate = 1;
    if( zBranch==0 ) zBranch = "private";
  sCiInfo.zBranch = find_option("branch","b",1);
  sCiInfo.zColor = find_option("bgcolor",0,1);
  sCiInfo.zBrClr = find_option("branchcolor",0,1);
  sCiInfo.closeFlag = find_option("close",0,0)!=0;
  sCiInfo.integrateFlag = find_option("integrate",0,0)!=0;
  sCiInfo.zMimetype = find_option("mimetype",0,1);
  sCiInfo.verboseFlag = find_option("verbose", "v", 0)!=0;
  while( (zTag = find_option("tag",0,1))!=0 ){
    if( zTag[0]==0 ) continue;
    if( zBgColor==0 ) zBgColor = "#fec084";  /* Orange */
    sCiInfo.azTag = fossil_realloc((void*)sCiInfo.azTag,
                                    sizeof(char*)*(nTag+2));
    sCiInfo.azTag[nTag++] = zTag;
    sCiInfo.azTag[nTag] = 0;
  }
  zComFile = find_option("message-file", "M", 1);
  zDateOvrd = find_option("date-override",0,1);
  zUserOvrd = find_option("user-override",0,1);
  sCiInfo.zDateOvrd = find_option("date-override",0,1);
  sCiInfo.zUserOvrd = find_option("user-override",0,1);
  db_must_be_within_tree();
  noSign = db_get_boolean("omitsign", 0)|noSign;
  if( db_get_boolean("clearsign", 0)==0 ){ noSign = 1; }
  useCksum = db_get_boolean("repo-cksum", 1);
  bIgnoreSkew = find_option("ignore-clock-skew",0,0)!=0;
  outputManifest = db_get_manifest_setting();
  mxSize = db_large_file_size();
  if( find_option("ignore-oversize",0,0)!=0 ) mxSize = 0;
  verify_all_options();

  /* Get the ID of the parent manifest artifact */
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    useCksum = 1;
    if( privateFlag==0 && sCiInfo.zBranch==0 ) {
      sCiInfo.zBranch=db_get("main-branch", 0);
    }
  }else{
  if( content_is_private(vid) ){
    g.markPrivate = 1;
    privateParent = content_is_private(vid);
  }

  /* Track the "private" status */
  g.markPrivate = privateFlag || privateParent;
  if( privateFlag && !privateParent ){
    /* Apply default branch name ("private") and color ("orange") if not
    ** specified otherwise on the command-line, and if the parent is not
    ** already private. */
    if( sCiInfo.zBranch==0 ) sCiInfo.zBranch = "private";
  }

  /* Do not allow the creation of a new branch using an existing open
  ** branch name unless the --force flag is used */
  if( sCiInfo.zBranch!=0
   && !forceFlag
   && fossil_strcmp(sCiInfo.zBranch,"private")!=0
   && branch_is_open(sCiInfo.zBranch)
  ){
    fossil_fatal("an open branch named \"%s\" already exists - use --force"
                 " to override", sCiInfo.zBranch);
  }

  /* Escape special characters in tags and put all tags in sorted order */
  if( nTag ){
    int i;
    for(i=0; i<nTag; i++) sCiInfo.azTag[i] = mprintf("%F", sCiInfo.azTag[i]);
    qsort((void*)sCiInfo.azTag, nTag, sizeof(sCiInfo.azTag[0]), tagCmp);
  }

  /*
  ** Autosync if autosync is enabled and this is not a private check-in.
  */
  if( !g.markPrivate ){
    autosync(AUTOSYNC_PULL);
    int syncFlags = SYNC_PULL;
    if( vid!=0 && !allowFork && !forceFlag ){
      syncFlags |= SYNC_CKIN_LOCK;
    }
    if( autosync_loop(syncFlags, 1, "commit") ){
      fossil_exit(1);
    }
  }

  /* So that older versions of Fossil (that do not understand delta-
  ** manifest) can continue to use this repository, do not create a new
  ** delta-manifest unless this repository already contains one or more
  ** delta-manifests, or unless the delta-manifest is explicitly requested
  ** by the --delta option.
  **
  ** The forbid-delta-manifests setting prevents new delta manifests.
  **
  ** If the remote repository sent an avoid-delta-manifests pragma on
  ** the autosync above, then also try to avoid deltas, unless the
  ** --delta option is specified.  The remote repo will send the
  ** avoid-delta-manifests pragma if it has its "forbid-delta-manifests"
  ** setting is enabled.
  */
  if( !db_get_boolean("seen-delta-manifest",0)
   || db_get_boolean("forbid-delta-manifests",0)
   || g.bAvoidDeltaManifests
  ){
    if( !forceDelta ) forceBaseline = 1;
  }


  /* Require confirmation to continue with the check-in if there is
  ** clock skew
  */
  if( g.clockSkewSeen ){
    if( bIgnoreSkew!=0 ){
      cReply = 'y';
      fossil_warning("Clock skew ignored due to --ignore-clock-skew.");
    }else if( !noPrompt ){
      prompt_user("continue in spite of time skew (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      blob_reset(&ans);
    }else{
      fossil_print("Abandoning commit due to time skew\n");
      cReply = 'N';
    }
    if( cReply!='y' && cReply!='Y' ){
      fossil_exit(1);
    }
  }

  /* There are two ways this command may be executed. If there are
  ** no arguments following the word "commit", then all modified files
  ** in the checked out directory are committed. If one or more arguments
  ** in the checked-out directory are committed. If one or more arguments
  ** follows "commit", then only those files are committed.
  **
  ** After the following function call has returned, the Global.aCommitFile[]
  ** array is allocated to contain the "id" field from the vfile table
  ** for each file to be committed. Or, if aCommitFile is NULL, all files
  ** should be committed.
  */
  select_commit_files();
  isAMerge = db_exists("SELECT 1 FROM vmerge");
  if( select_commit_files() ){
    if( !noPrompt ){
      prompt_user("continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      blob_reset(&ans);
    }else{
      cReply = 'N';
    }
    if( cReply!='y' && cReply!='Y' ){
      fossil_exit(1);
    }
  }
  isAMerge = db_exists("SELECT 1 FROM vmerge WHERE id=0 OR id<-2");
  if( g.aCommitFile && isAMerge ){
    fossil_fatal("cannot do a partial commit of a merge");
  }

  /* Doing "fossil mv fileA fileB; fossil add fileA; fossil commit fileA"
  ** will generate a manifest that has two fileA entries, which is illegal.
  ** When you think about it, the sequence above makes no sense.  So detect
  ** it and disallow it.  Ticket [0ff64b0a5fc8].
  */
  if( g.aCommitFile ){
    db_prepare(&q,
       "SELECT v1.pathname, v2.pathname"
       "  FROM vfile AS v1, vfile AS v2"
       " WHERE is_selected(v1.id)"
       "   AND v2.origname IS NOT NULL"
       "   AND v2.origname=v1.pathname"
       "   AND NOT is_selected(v2.id)");
    if( db_step(&q)==SQLITE_ROW ){
      const char *zFrom = db_column_text(&q, 0);
      const char *zTo = db_column_text(&q, 1);
      fossil_fatal("cannot do a partial commit of '%s' without '%s' because "
                   "'%s' was renamed to '%s'", zFrom, zTo, zFrom, zTo);
    }
    db_finalize(&q);
  }

  user_select();
  /*
  ** Check that the user exists.
  */
  if( !db_exists("SELECT 1 FROM user WHERE login=%Q", g.zLogin) ){
    fossil_fatal("no such user: %s", g.zLogin);
  }
  

  hasChanges = unsaved_changes(useHash ? CKSIG_HASH : 0);
  db_begin_transaction();
  db_record_repository_filename(0);
  rc = unsaved_changes();
  if( rc==0 && !isAMerge && !forceFlag ){
    fossil_panic("nothing has changed");
  if( hasChanges==0 && !isAMerge && !allowEmpty && !forceFlag ){
    fossil_fatal("nothing has changed; use --allow-empty to override");
  }

  /* If one or more files that were named on the command line have not
  ** been modified, bail out now.
  /* If none of the files that were named on the command line have
  ** been modified, bail out now unless the --allow-empty or --force
  ** flags is used.
  */
  if( g.aCommitFile ){
    Blob unmodified;
  if( g.aCommitFile
   && !allowEmpty
    memset(&unmodified, 0, sizeof(Blob));
    blob_init(&unmodified, 0, 0);
    db_blob(&unmodified, 
      "SELECT pathname FROM vfile WHERE chnged = 0 AND file_is_selected(id)"
    );
   && !forceFlag
   && !db_exists(
        "SELECT 1 FROM vfile "
        " WHERE is_selected(id)"
        "   AND (chnged OR deleted OR rid=0 OR pathname!=origname)")
  ){
    if( strlen(blob_str(&unmodified)) ){
      fossil_panic("file %s has not changed", blob_str(&unmodified));
    }
  }

    fossil_fatal("none of the selected files have changed; use "
                 "--allow-empty to override.");
  }

  /* This loop checks for potential forks and for check-ins against a
  ** closed branch.  The checks are repeated once after interactive
  ** check-in comment editing.
  */
  do{
    /*
    ** Do not allow a commit that will cause a fork unless the --allow-fork
    ** or --force flags is used, or unless this is a private check-in.
    ** The initial commit MUST have tags "trunk" and "sym-trunk".
    */
    if( sCiInfo.zBranch==0
     && allowFork==0
     && forceFlag==0
     && g.markPrivate==0
     && (vid==0 || !is_a_leaf(vid) || g.ckinLockFail)
  /*
  ** Do not allow a commit that will cause a fork unless the --force flag
  ** is used or unless this is a private check-in.
    ){
      if( g.ckinLockFail ){
        fossil_fatal("Might fork due to a check-in race with user \"%s\"\n"
  */
  if( zBranch==0 && forceFlag==0 && g.markPrivate==0 && !is_a_leaf(vid) ){
    fossil_fatal("would fork.  \"update\" first or use -f or --force.");
  }

  /*
  ** Do not allow a commit against a closed leaf 
  */
  if( db_exists("SELECT 1 FROM tagxref"
                " WHERE tagid=%d AND rid=%d AND tagtype>0",
                TAG_CLOSED, vid) ){
    fossil_fatal("cannot commit against a closed leaf");
  }
                     "Try \"update\" first, or --branch, or "
                     "use --override-lock",
                     g.ckinLockFail);
      }else{
        fossil_fatal("Would fork.  \"update\" first or use --branch or "
                     "--allow-fork.");
      }
    }

    /*
    ** Do not allow a commit against a closed leaf unless the commit
    ** ends up on a different branch.
    */
    if(
        /* parent check-in has the "closed" tag... */
       leaf_is_closed(vid)
        /* ... and the new check-in has no --branch option or the --branch
        ** option does not actually change the branch */
     && (sCiInfo.zBranch==0
         || db_exists("SELECT 1 FROM tagxref"
                      " WHERE tagid=%d AND rid=%d AND tagtype>0"
                      "   AND value=%Q", TAG_BRANCH, vid, sCiInfo.zBranch))
    ){
      fossil_fatal("cannot commit against a closed leaf");
    }

    /* Always exit the loop on the second pass */
    if( bRecheck ) break;
  vfile_aggregate_checksum_disk(vid, &cksum1);
  if( zComment ){
    blob_zero(&comment);
    blob_append(&comment, zComment, -1);
  }else if( zComFile ){
    blob_zero(&comment);
    blob_read_from_file(&comment, zComFile);
  }else{
    char *zInit = db_text(0, "SELECT value FROM vvar WHERE name='ci-comment'");
    prepare_commit_comment(&comment, zInit, zBranch, vid);
    free(zInit);
  }


    /* Get the check-in comment.  This might involve prompting the
    ** user for the check-in comment, in which case we should resync
    ** to renew the check-in lock and repeat the checks for conflicts.
    */
    if( zComment ){
      blob_zero(&comment);
      blob_append(&comment, zComment, -1);
    }else if( zComFile ){
      blob_zero(&comment);
      blob_read_from_file(&comment, zComFile, ExtFILE);
      blob_to_utf8_no_bom(&comment, 1);
    }else if( !noPrompt ){
      char *zInit = db_text(0,"SELECT value FROM vvar WHERE name='ci-comment'");
      prepare_commit_comment(&comment, zInit, &sCiInfo, vid, dryRunFlag);
      if( zInit && zInit[0] && fossil_strcmp(zInit, blob_str(&comment))==0 ){
        prompt_user("unchanged check-in comment.  continue (y/N)? ", &ans);
        cReply = blob_str(&ans)[0];
        blob_reset(&ans);
        if( cReply!='y' && cReply!='Y' ){
          fossil_fatal("Commit aborted.");
        }
      }
      free(zInit);
      db_multi_exec("REPLACE INTO vvar VALUES('ci-comment',%B)", &comment);
      db_end_transaction(0);
      db_begin_transaction();
      if( !g.markPrivate && vid!=0 && !allowFork && !forceFlag ){
        /* Do another auto-pull, renewing the check-in lock.  Then set
        ** bRecheck so that we loop back above to verify that the check-in
        ** is still not against a closed branch and still won't fork. */
        int syncFlags = SYNC_PULL|SYNC_CKIN_LOCK;
        if( autosync_loop(syncFlags, 1, "commit") ){
          fossil_fatal("Auto-pull failed. Commit aborted.");
        }
        bRecheck = 1;
      }
    }else{
      blob_zero(&comment);
    }
  }while( bRecheck );

  if( blob_size(&comment)==0 ){
    Blob ans;
    blob_zero(&ans);
    prompt_user("empty check-in comment.  continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
      db_end_transaction(1);
      exit(1);
    }
  }else{
    db_multi_exec("REPLACE INTO vvar VALUES('ci-comment',%B)", &comment);
    db_end_transaction(0);
    if( !dryRunFlag ){
      if( !noPrompt ){
        prompt_user("empty check-in comment.  continue (y/N)? ", &ans);
        cReply = blob_str(&ans)[0];
        blob_reset(&ans);
      }else{
        cReply = 'N';
      }
      if( cReply!='y' && cReply!='Y' ){
        fossil_fatal("Abandoning commit due to empty check-in comment\n");
      }
    }
  }

  if( !noVerify && hook_exists("before-commit") ){
    /* Run before-commit hooks */
    char *zAuxFile;
    zAuxFile = prepare_commit_description_file(
    db_begin_transaction();
  }

  /* Step 1: Insert records for all modified files into the blob 
                     &sCiInfo, vid, &comment, dryRunFlag);
    if( zAuxFile ){
      int rc = hook_run("before-commit",zAuxFile,bTrace);
      file_delete(zAuxFile);
      fossil_free(zAuxFile);
      if( rc ){
        fossil_fatal("Before-commit hook failed\n");
      }
    }
  }

  /*
  ** Step 1: Compute an aggregate MD5 checksum over the disk image
  ** of every file in vid.  The file names are part of the checksum.
  ** The resulting checksum is the same as is expected on the R-card
  ** of a manifest.
  */
  if( useCksum ) vfile_aggregate_checksum_disk(vid, &cksum1);

  /* Step 2: Insert records for all modified files into the blob
  ** table. If there were arguments passed to this command, only
  ** the identified fils are inserted (if they have been modified).
  ** the identified files are inserted (if they have been modified).
  */
  db_prepare(&q,
    "SELECT id, %Q || pathname, mrid FROM vfile "
    "WHERE chnged==1 AND NOT deleted AND file_is_selected(id)"
    , g.zLocalRoot
    "SELECT id, %Q || pathname, mrid, %s, %s, %s FROM vfile "
    "WHERE chnged<>0 AND NOT deleted AND is_selected(id)",
    g.zLocalRoot,
    glob_expr("pathname", db_get("crlf-glob",db_get("crnl-glob",""))),
    glob_expr("pathname", db_get("binary-glob","")),
    glob_expr("pathname", db_get("encoding-glob",""))
  );
  while( db_step(&q)==SQLITE_ROW ){
    int id, rid;
    const char *zFullname;
    Blob content;
    int crlfOk, binOk, encodingOk, sizeOk;

    id = db_column_int(&q, 0);
    zFullname = db_column_text(&q, 1);
    rid = db_column_int(&q, 2);
    crlfOk = db_column_int(&q, 3);
    binOk = db_column_int(&q, 4);
    encodingOk = db_column_int(&q, 5);
    sizeOk = mxSize<=0 || file_size(zFullname, ExtFILE)<=mxSize;

    blob_zero(&content);
    blob_read_from_file(&content, zFullname);
    nrid = content_put(&content, 0, 0);
    blob_read_from_file(&content, zFullname, RepoFILE);
    /* Do not emit any warnings when they are disabled. */
    if( !noWarningFlag ){
      abortCommit |= commit_warning(&content, crlfOk, binOk,
                                    encodingOk, sizeOk, noPrompt,
                                    zFullname, 0);
    }
    if( contains_merge_marker(&content) ){
      Blob fname; /* Relative pathname of the file */

      nConflict++;
      file_relative_name(zFullname, &fname, 0);
      fossil_print("possible unresolved merge conflict in %s\n",
                   blob_str(&fname));
      blob_reset(&fname);
    }
    nrid = content_put(&content);
    blob_reset(&content);
    if( nrid!=rid ){
    if( rid>0 ){
      content_deltify(rid, nrid, 0);
    }
    db_multi_exec("UPDATE vfile SET mrid=%d, rid=%d WHERE id=%d", nrid,nrid,id);
    db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
      if( rid>0 ){
        content_deltify(rid, &nrid, 1, 0);
      }
      db_multi_exec("UPDATE vfile SET mrid=%d, rid=%d, mhash=NULL WHERE id=%d",
                    nrid,nrid,id);
  }
  db_finalize(&q);

      db_add_unsent(nrid);
    }
  /* Create the manifest */
  blob_zero(&manifest);
  if( blob_size(&comment)==0 ){
    blob_append(&comment, "(no comment)", -1);
  }
  blob_appendf(&manifest, "C %F\n", blob_str(&comment));
  zDate = db_text(0, "SELECT datetime('%q')", zDateOvrd ? zDateOvrd : "now");
  zDate[10] = 'T';
  blob_appendf(&manifest, "D %s\n", zDate);
  zDate[10] = ' ';
  db_prepare(&q,
  db_finalize(&q);
    "SELECT pathname, uuid, origname, blob.rid, isexe"
    "  FROM vfile JOIN blob ON vfile.mrid=blob.rid"
    " WHERE NOT deleted AND vfile.vid=%d"
    " ORDER BY 1", vid);
  blob_zero(&filename);
  blob_appendf(&filename, "%s", g.zLocalRoot);
  nBasename = blob_size(&filename);
  while( db_step(&q)==SQLITE_ROW ){
  if( nConflict && !allowConflict ){
    fossil_fatal("abort due to unresolved merge conflicts; "
                 "use --allow-conflict to override");
    const char *zName = db_column_text(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zOrig = db_column_text(&q, 2);
    int frid = db_column_int(&q, 3);
    int isexe = db_column_int(&q, 4);
    const char *zPerm;
    blob_append(&filename, zName, -1);
#ifndef __MINGW32__
    /* For unix, extract the "executable" permission bit directly from
    ** the filesystem.  On windows, the "executable" bit is retained
    ** unchanged from the original. */
    isexe = file_isexe(blob_str(&filename));
#endif
    if( isexe ){
      zPerm = " x";
    }else{
  }else if( abortCommit ){
      zPerm = "";
    }
    blob_resize(&filename, nBasename);
    if( zOrig==0 || strcmp(zOrig,zName)==0 ){
      blob_appendf(&manifest, "F %F %s%s\n", zName, zUuid, zPerm);
    }else{
    fossil_fatal("one or more files were converted on your request; "
                 "please re-test before committing");
  }

  /* Create the new manifest */
  sCiInfo.pComment = &comment;
  sCiInfo.pCksum =  useCksum ? &cksum1 : 0;
  sCiInfo.verifyDate = !allowOlder && !forceFlag;
  if( forceDelta ){
    blob_zero(&manifest);
  }else{
      if( zPerm[0]==0 ){ zPerm = " w"; }
      blob_appendf(&manifest, "F %F %s%s %F\n", zName, zUuid, zPerm, zOrig);
    }
    create_manifest(&manifest, 0, 0, vid, &sCiInfo, &szB);
  }
    if( !g.markPrivate ) content_make_public(frid);
  }
  blob_reset(&filename);
  db_finalize(&q);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
  blob_appendf(&manifest, "P %s", zUuid);
  checkin_verify_younger(vid, zUuid, zDate);


  /* See if a delta-manifest would be more appropriate */
  if( !forceBaseline ){
    const char *zBaselineUuid;
    Manifest *pParent;
    Manifest *pBaseline;
    pParent = manifest_get(vid, CFTYPE_MANIFEST, 0);
    if( pParent && pParent->zBaseline ){
      zBaselineUuid = pParent->zBaseline;
      pBaseline = manifest_get_by_name(zBaselineUuid, 0);
    }else{
      zBaselineUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
      pBaseline = pParent;
    }
    if( pBaseline ){
      Blob delta;
      create_manifest(&delta, zBaselineUuid, pBaseline, vid, &sCiInfo, &szD);
      /*
      ** At this point, two manifests have been constructed, either of
      ** which would work for this check-in.  The first manifest (held
      ** in the "manifest" variable) is a baseline manifest and the second
      ** (held in variable named "delta") is a delta manifest.  The
      ** question now is: which manifest should we use?
      **
      ** Let B be the number of F-cards in the baseline manifest and
      ** let D be the number of F-cards in the delta manifest, plus one for
      ** the B-card.  (B is held in the szB variable and D is held in the
      ** szD variable.)  Assume that all delta manifests adds X new F-cards.
      ** Then to minimize the total number of F- and B-cards in the repository,
      ** we should use the delta manifest if and only if:
      **
      **      D*D < B*X - X*X
      **
      ** X is an unknown here, but for most repositories, we will not be
      ** far wrong if we assume X=3.
      */
      if( forceDelta || (szD*szD)<(szB*3-9) ){
        blob_reset(&manifest);
        manifest = delta;
      }else{
        blob_reset(&delta);
      }
  db_prepare(&q2, "SELECT merge FROM vmerge WHERE id=:id");
  db_bind_int(&q2, ":id", 0);
  while( db_step(&q2)==SQLITE_ROW ){
    int mid = db_column_int(&q2, 0);
    if( !g.markPrivate && content_is_private(mid) ) continue;
    zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", mid);
    if( zUuid ){
      blob_appendf(&manifest, " %s", zUuid);
    }else if( forceDelta ){
      fossil_fatal("unable to find a baseline-manifest for the delta");
      checkin_verify_younger(mid, zUuid, zDate);
      free(zUuid);
    }
  }
  if( !noSign && !g.markPrivate && clearsign(&manifest, &manifest) ){
    if( !noPrompt ){
      prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
  db_reset(&q2);

      blob_reset(&ans);
    }else{
      cReply = 'N';
    }
  blob_appendf(&manifest, "\n");
  blob_appendf(&manifest, "R %b\n", &cksum1);
  if( zBranch && zBranch[0] ){
    if( cReply!='y' && cReply!='Y' ){
    Stmt q;
    if( zBgColor && zBgColor[0] ){
      blob_appendf(&manifest, "T *bgcolor * %F\n", zBgColor);
      fossil_fatal("Abandoning commit due to manifest signing failure\n");
    }
  }
    blob_appendf(&manifest, "T *branch * %F\n", zBranch);
    blob_appendf(&manifest, "T *sym-%F *\n", zBranch);


  /* If the -n|--dry-run option is specified, output the manifest file
  ** and rollback the transaction.
  */
  if( dryRunFlag ){
    blob_write_to_file(&manifest, "");
  }
    /* Cancel all other symbolic tags */
    db_prepare(&q,
        "SELECT tagname FROM tagxref, tag"
        " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
        "   AND tagtype>0 AND tagname GLOB 'sym-*'"
  if( outputManifest & MFESTFLG_RAW ){
    zManifestFile = mprintf("%smanifest", g.zLocalRoot);
        "   AND tagname!='sym-'||%Q"
        " ORDER BY tagname",
        vid, zBranch);
    blob_write_to_file(&manifest, zManifestFile);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTag = db_column_text(&q, 0);
      blob_appendf(&manifest, "T -%F *\n", zTag);
    }
    db_finalize(&q);
  }  
    blob_reset(&manifest);
    blob_read_from_file(&manifest, zManifestFile, ExtFILE);
    free(zManifestFile);
  }

  nvid = content_put(&manifest);
  if( nvid==0 ){
    fossil_fatal("trouble committing manifest: %s", g.zErrMsg);
  }
  blob_appendf(&manifest, "U %F\n", zUserOvrd ? zUserOvrd : g.zLogin);
  md5sum_blob(&manifest, &mcksum);
  db_add_unsent(nvid);
  if( manifest_crosslink(nvid, &manifest,
  blob_appendf(&manifest, "Z %b\n", &mcksum);
  zManifestFile = mprintf("%smanifest", g.zLocalRoot);
  if( !noSign && !g.markPrivate && clearsign(&manifest, &manifest) ){
    Blob ans;
    blob_zero(&ans);
                         dryRunFlag ? MC_NONE : MC_PERMIT_HOOKS)==0 ){
    fossil_fatal("%s", g.zErrMsg);
  }
  assert( blob_is_reset(&manifest) );
  content_deltify(vid, &nvid, 1, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nvid);

  db_prepare(&q, "SELECT mhash,merge FROM vmerge WHERE id=-4");
    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
      db_end_transaction(1);
      exit(1);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zIntegrateUuid = db_column_text(&q, 0);
    if( is_a_leaf(db_column_int(&q, 1)) ){
      fossil_print("Closed: %s\n", zIntegrateUuid);
    }else{
      fossil_print("Not_Closed: %s (not a leaf any more)\n", zIntegrateUuid);
    }
  }
  blob_write_to_file(&manifest, zManifestFile);
  blob_reset(&manifest);
  blob_read_from_file(&manifest, zManifestFile);
  free(zManifestFile);
  db_finalize(&q);
  nvid = content_put(&manifest, 0, 0);
  if( nvid==0 ){
    fossil_panic("trouble committing manifest: %s", g.zErrMsg);
  }

  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nvid);
  manifest_crosslink(nvid, &manifest);
  content_deltify(vid, nvid, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nvid);
  printf("New_Version: %s\n", zUuid);
  zManifestFile = mprintf("%smanifest.uuid", g.zLocalRoot);
  blob_zero(&muuid);
  blob_appendf(&muuid, "%s\n", zUuid);
  blob_write_to_file(&muuid, zManifestFile);
  free(zManifestFile);
  blob_reset(&muuid);

  
  fossil_print("New_Version: %s\n", zUuid);
  if( outputManifest & MFESTFLG_UUID ){
    zManifestFile = mprintf("%smanifest.uuid", g.zLocalRoot);
    blob_zero(&muuid);
    blob_appendf(&muuid, "%s\n", zUuid);
    blob_write_to_file(&muuid, zManifestFile);
    free(zManifestFile);
    blob_reset(&muuid);
  }

  /* Update the vfile and vmerge tables */
  db_multi_exec(
    "DELETE FROM vfile WHERE (vid!=%d OR deleted) AND file_is_selected(id);"
    "DELETE FROM vmerge WHERE file_is_selected(id) OR id=0;"
    "DELETE FROM vfile WHERE (vid!=%d OR deleted) AND is_selected(id);"
    "DELETE FROM vmerge;"
    "UPDATE vfile SET vid=%d;"
    "UPDATE vfile SET rid=mrid, chnged=0, deleted=0, origname=NULL"
    " WHERE file_is_selected(id);"
    "UPDATE vfile SET rid=mrid, mhash=NULL, chnged=0, deleted=0, origname=NULL"
    " WHERE is_selected(id);"
    , vid, nvid
  );
  db_set_checkout(nvid);
  db_lset_int("checkout", nvid);

  /* Verify that the repository checksum matches the expected checksum
  ** calculated before the checkin started (and stored as the R record
  ** of the manifest file).
  */
  vfile_aggregate_checksum_repository(nvid, &cksum2);
  if( blob_compare(&cksum1, &cksum2) ){
    fossil_panic("tree checksum does not match repository after commit");
  }

  /* Update the isexe and islink columns of the vfile table */
  db_prepare(&q,
    "UPDATE vfile SET isexe=:exec, islink=:link"
    " WHERE vid=:vid AND pathname=:path AND (isexe!=:exec OR islink!=:link)"
  );
  db_bind_int(&q, ":vid", nvid);
  pManifest = manifest_get(nvid, CFTYPE_MANIFEST, 0);
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest, 0)) ){
    db_bind_int(&q, ":exec", pFile->zPerm && strstr(pFile->zPerm, "x"));
    db_bind_int(&q, ":link", pFile->zPerm && strstr(pFile->zPerm, "l"));
    db_bind_text(&q, ":path", pFile->zName);
    db_step(&q);
    db_reset(&q);
  }
  db_finalize(&q);
  manifest_destroy(pManifest);

  if( useCksum ){
    /* Verify that the repository checksum matches the expected checksum
    ** calculated before the check-in started (and stored as the R record
    ** of the manifest file).
    */
    vfile_aggregate_checksum_repository(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      vfile_compare_repository_to_disk(nvid);
      fossil_fatal("working check-out does not match what would have ended "
                   "up in the repository:  %b versus %b",
                   &cksum1, &cksum2);
    }

  /* Verify that the manifest checksum matches the expected checksum */
  vfile_aggregate_checksum_manifest(nvid, &cksum2, &cksum1b);
  if( blob_compare(&cksum1, &cksum1b) ){
    fossil_panic("manifest checksum does not agree with manifest: "
                 "%b versus %b", &cksum1, &cksum1b);
  }
  if( blob_compare(&cksum1, &cksum2) ){
    fossil_panic("tree checksum does not match manifest after commit: "
                 "%b versus %b", &cksum1, &cksum2);
  }
    /* Verify that the manifest checksum matches the expected checksum */
    vfile_aggregate_checksum_manifest(nvid, &cksum2, &cksum1b);
    if( blob_compare(&cksum1, &cksum1b) ){
      fossil_fatal("manifest checksum self-test failed: "
                   "%b versus %b", &cksum1, &cksum1b);
    }
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_fatal(
         "working check-out does not match manifest after commit: "
         "%b versus %b", &cksum1, &cksum2);
    }

  /* Verify that the commit did not modify any disk images. */
  vfile_aggregate_checksum_disk(nvid, &cksum2);
  if( blob_compare(&cksum1, &cksum2) ){
    fossil_panic("tree checksums before and after commit do not match");
    /* Verify that the commit did not modify any disk images. */
    vfile_aggregate_checksum_disk(nvid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      fossil_fatal("working check-out before and after commit does not match");
    }
  }

  /* Clear the undo/redo stack */
  undo_reset();

  /* Commit */
  db_multi_exec("DELETE FROM vvar WHERE name='ci-comment'");
  db_multi_exec("PRAGMA repository.application_id=252006673;");
  db_multi_exec("PRAGMA localdb.application_id=252006674;");
  if( dryRunFlag ){
    db_end_transaction(1);
    return;
  }
  db_end_transaction(0);

  if( outputManifest & MFESTFLG_TAGS ){
    Blob tagslist;
    zManifestFile = mprintf("%smanifest.tags", g.zLocalRoot);
    blob_zero(&tagslist);
    get_checkin_taglist(nvid, &tagslist);
    blob_write_to_file(&tagslist, zManifestFile);
    blob_reset(&tagslist);
    free(zManifestFile);
  }

  if( !g.markPrivate ){
    int syncFlags = SYNC_PUSH | SYNC_PULL | SYNC_IFABLE;
    autosync(AUTOSYNC_PUSH);  
    autosync_loop(syncFlags, 0, "commit");
  }
  if( count_nonbranch_children(vid)>1 ){
    printf("**** warning: a fork has occurred *****\n");
    fossil_print("**** warning: a fork has occurred *****\n");
  }else{
    leaf_ambiguity_warning(nvid,nvid);
  }
}
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** from the local repository.
*/
#include "config.h"
#include "checkout.h"
#include <assert.h>

/*
** Check to see if there is an existing checkout that has been
** Check to see if there is an existing check-out that has been
** modified.  Return values:
**
**     0:   There is an existing checkout but it is unmodified
**     1:   There is a modified checkout - there are unsaved changes
**     0:   There is an existing check-out but it is unmodified
**     1:   There is a modified check-out - there are unsaved changes
**     2:   There is no existing checkout
*/
int unsaved_changes(void){
int unsaved_changes(unsigned int cksigFlags){
  int vid;
  db_must_be_within_tree();
  vid = db_lget_int("checkout",0);
  if( vid==0 ) return 2;
  vfile_check_signature(vid, 1);
  vfile_check_signature(vid, cksigFlags|CKSIG_ENOTFILE);
  return db_exists("SELECT 1 FROM vfile WHERE chnged"
                   " OR coalesce(origname!=pathname,0)");
}

/*
** Undo the current check-out.  Unlink all files from the disk.
** Clear the VFILE table.
**
** Also delete any directory that becomes empty as a result of deleting
** files due to this operation, as long as that directory is not the
** current working directory and is not on the empty-dirs list.
*/
void uncheckout(int vid){
  char *zPwd;
  if( vid==0 ) return;
  vfile_unlink(vid);
  if( vid<=0 ) return;
  sqlite3_create_function(g.db, "dirname",1,SQLITE_UTF8,0,
                          file_dirname_sql_function, 0, 0);
  sqlite3_create_function(g.db, "unlink",1,SQLITE_UTF8|SQLITE_DIRECTONLY,0,
                          file_delete_sql_function, 0, 0);
  sqlite3_create_function(g.db, "rmdir", 1, SQLITE_UTF8|SQLITE_DIRECTONLY, 0,
                          file_rmdir_sql_function, 0, 0);
  db_multi_exec(
    "CREATE TEMP TABLE dir_to_delete(name TEXT %s PRIMARY KEY)WITHOUT ROWID",
    filename_collation()
  );
  db_multi_exec(
    "INSERT OR IGNORE INTO dir_to_delete(name)"
    "  SELECT dirname(pathname) FROM vfile"
    "   WHERE vid=%d AND mrid>0",
    vid
  );
  do{
    db_multi_exec(
      "INSERT OR IGNORE INTO dir_to_delete(name)"
      " SELECT dirname(name) FROM dir_to_delete;"
    );
  }while( db_changes() );
  db_multi_exec(
    "SELECT unlink(%Q||pathname) FROM vfile"
    " WHERE vid=%d AND mrid>0;",
    g.zLocalRoot, vid
  );
  ensure_empty_dirs_created(1);
  zPwd = file_getcwd(0,0);
  db_multi_exec(
    "SELECT rmdir(%Q||name) FROM dir_to_delete"
    " WHERE (%Q||name)<>%Q ORDER BY name DESC",
    g.zLocalRoot, g.zLocalRoot, zPwd
  );
  fossil_free(zPwd);
  db_multi_exec("DELETE FROM vfile WHERE vid=%d", vid);
}


/*
** Given the abbreviated UUID name of a version, load the content of that
** Given the abbreviated hash of a version, load the content of that
** version in the VFILE table.  Return the VID for the version.
**
** If anything goes wrong, panic.
*/
int load_vfile(const char *zName){
int load_vfile(const char *zName, int forceMissingFlag){
  Blob uuid;
  int vid;

  blob_init(&uuid, zName, -1);
  if( name_to_uuid(&uuid, 1) ){
    fossil_panic(g.zErrMsg);
  if( name_to_uuid(&uuid, 1, "ci") ){
    fossil_fatal("%s", g.zErrMsg);
  }
  vid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &uuid);
  if( vid==0 ){
    fossil_fatal("no such check-in: %s", g.argv[2]);
  }
  if( !is_a_version(vid) ){
    fossil_fatal("object [%.10s] is not a check-in", blob_str(&uuid));
    fossil_fatal("object [%S] is not a check-in", blob_str(&uuid));
  }
  load_vfile_from_rid(vid);
  return vid;
}
  if( load_vfile_from_rid(vid) && !forceMissingFlag ){
    fossil_fatal("missing content, unable to check out");
  };

/*
** Load a vfile from a record ID.
*/
void load_vfile_from_rid(int vid){
  Blob manifest;

  if( db_exists("SELECT 1 FROM vfile WHERE vid=%d", vid) ){
    return;
  return vid;
  }
  content_get(vid, &manifest);
  vfile_build(vid, &manifest);
  blob_reset(&manifest);
}

/*
** Set or clear the vfile.isexe flag for a file.
*/
static void set_or_clear_isexe(const char *zFilename, int vid, int onoff){
  static Stmt s;
  db_static_prepare(&s,
  db_multi_exec("UPDATE vfile SET isexe=%d WHERE vid=%d and pathname=%Q",
                onoff, vid, zFilename);
    "UPDATE vfile SET isexe=:isexe"
    " WHERE vid=:vid AND pathname=:path AND isexe!=:isexe"
  );
  db_bind_int(&s, ":isexe", onoff);
  db_bind_int(&s, ":vid", vid);
  db_bind_text(&s, ":path", zFilename);
  db_step(&s);
  db_reset(&s);
}

/*
** Set or clear the execute permission bit (as appropriate) for all
** files in the current check-out, and replace files that have
** symlink bit with actual symlinks.
*/
void checkout_set_all_exe(int vid){
  Blob filename;
  int baseLen;
  Manifest *pManifest;
  ManifestFile *pFile;
** Read the manifest file given by vid out of the repository
** and store it in the root of the local check-out.

  /* Check the EXE permission status of all files
  */
  pManifest = manifest_get(vid, CFTYPE_MANIFEST, 0);
  if( pManifest==0 ) return;
  blob_zero(&filename);
  blob_appendf(&filename, "%s", g.zLocalRoot);
  baseLen = blob_size(&filename);
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest, 0))!=0 ){
    int isExe;
    blob_append(&filename, pFile->zName, -1);
    isExe = pFile->zPerm && strstr(pFile->zPerm, "x");
    file_setexe(blob_str(&filename), isExe);
    set_or_clear_isexe(pFile->zName, vid, isExe);
    blob_resize(&filename, baseLen);
  }
  blob_reset(&filename);
  manifest_destroy(pManifest);
}


/*
** If the "manifest" setting is true, then automatically generate
** files named "manifest" and "manifest.uuid" containing, respectively,
** the text of the manifest and the artifact ID of the manifest.
** If the manifest setting is set, but is not a boolean value, then treat
** each character as a flag to enable writing "manifest", "manifest.uuid" or
** "manifest.tags".
*/
void manifest_to_disk(int vid){
  char *zManFile;
  Blob manifest;
  Blob hash;
  Blob taglist;
  Blob filename;
  int baseLen;
  int i;
  Manifest m;
  int flg;

  flg = db_get_manifest_setting();

  if( flg & MFESTFLG_RAW ){
  blob_zero(&manifest);
    blob_zero(&manifest);
  zManFile = mprintf("%smanifest", g.zLocalRoot);
  content_get(vid, &manifest);
  blob_write_to_file(&manifest, zManFile);
  free(zManFile);
  blob_zero(&hash);
    content_get(vid, &manifest);
    sterilize_manifest(&manifest, CFTYPE_MANIFEST);
    zManFile = mprintf("%smanifest", g.zLocalRoot);
    blob_write_to_file(&manifest, zManFile);
    free(zManFile);
  }else{
    if( !db_exists("SELECT 1 FROM vfile WHERE pathname='manifest'") ){
      zManFile = mprintf("%smanifest", g.zLocalRoot);
      file_delete(zManFile);
      free(zManFile);
    }
  }
  if( flg & MFESTFLG_UUID ){
    Blob hash;
  sha1sum_blob(&manifest, &hash);
  zManFile = mprintf("%smanifest.uuid", g.zLocalRoot);
  blob_append(&hash, "\n", 1);
  blob_write_to_file(&hash, zManFile);
  free(zManFile);
  blob_reset(&hash);
  manifest_parse(&m, &manifest);
  blob_zero(&filename);
  blob_appendf(&filename, "%s/", g.zLocalRoot);
  baseLen = blob_size(&filename);
  for(i=0; i<m.nFile; i++){ 
    zManFile = mprintf("%smanifest.uuid", g.zLocalRoot);
    blob_set_dynamic(&hash, rid_to_uuid(vid));
    blob_append(&hash, "\n", 1);
    blob_write_to_file(&hash, zManFile);
    free(zManFile);
    blob_reset(&hash);
  }else{
    if( !db_exists("SELECT 1 FROM vfile WHERE pathname='manifest.uuid'") ){
      zManFile = mprintf("%smanifest.uuid", g.zLocalRoot);
      file_delete(zManFile);
      free(zManFile);
    }
  }
  if( flg & MFESTFLG_TAGS ){
    blob_zero(&taglist);
    zManFile = mprintf("%smanifest.tags", g.zLocalRoot);
    get_checkin_taglist(vid, &taglist);
    blob_write_to_file(&taglist, zManFile);
    free(zManFile);
    int isExe;
    blob_append(&filename, m.aFile[i].zName, -1);
    blob_reset(&taglist);
    isExe = m.aFile[i].zPerm && strstr(m.aFile[i].zPerm, "x");
    file_setexe(blob_str(&filename), isExe);
  }else{
    if( !db_exists("SELECT 1 FROM vfile WHERE pathname='manifest.tags'") ){
      zManFile = mprintf("%smanifest.tags", g.zLocalRoot);
      file_delete(zManFile);
    set_or_clear_isexe(m.aFile[i].zName, vid, isExe);
    blob_resize(&filename, baseLen);
  }
  blob_reset(&filename);
  manifest_clear(&m);
      free(zManFile);
    }
  }
}

/*
** Find the branch name and all symbolic tags for a particular check-in
** identified by "rid".
**
** The branch name is actually only extracted if this procedure is run
** from within a local check-out.  And the branch name is not the branch
** name for "rid" but rather the branch name for the current check-out.
** It is unclear if the rid parameter is always the same as the current
** check-out.
*/
void get_checkin_taglist(int rid, Blob *pOut){
  Stmt stmt;
  char *zCurrent;
  blob_reset(pOut);
  zCurrent = db_text(0, "SELECT value FROM tagxref"
                        " WHERE rid=%d AND tagid=%d", rid, TAG_BRANCH);
  blob_appendf(pOut, "branch %s\n", zCurrent);
  db_prepare(&stmt, "SELECT substr(tagname, 5)"
                    "  FROM tagxref, tag"
                    " WHERE tagxref.rid=%d"
                    "   AND tagxref.tagtype>0"
                    "   AND tag.tagid=tagxref.tagid"
                    "   AND tag.tagname GLOB 'sym-*'", rid);
  while( db_step(&stmt)==SQLITE_ROW ){
    const char *zName;
    zName = db_column_text(&stmt, 0);
    blob_appendf(pOut, "tag %s\n", zName);
  }
  db_reset(&stmt);
  db_finalize(&stmt);
}


/*
** COMMAND: checkout
** COMMAND: checkout*
** COMMAND: co#
**
** Usage: %fossil checkout VERSION ?-f|--force? ?--keep?
** Usage: %fossil checkout ?VERSION | --latest? ?OPTIONS?
**    or: %fossil co ?VERSION | --latest? ?OPTIONS?
**
** NOTE: Most people use "fossil update" instead of "fossil checkout" for
** day-to-day operations.  If you are new to Fossil and trying to learn your
** way around, it is recommended that you become familiar with the
** "fossil update" command first.
**
** Check out a version specified on the command-line.  This command
** will abort if there are edited files in the current checkout unless
** the --force option appears on the command-line.  The --keep option
** This command changes the current check-out to the version specified
** as an argument.  The command aborts if there are edited files in the
** current check-out unless the --force option is used.  The --keep option
** leaves files on disk unchanged, except the manifest and manifest.uuid
** files.
**
** The --latest flag can be used in place of VERSION to checkout the
** The --latest flag can be used in place of VERSION to check-out the
** latest version in the repository.
**
** Options:
**    --force           Ignore edited files in the current check-out
**    --keep            Only update the manifest file(s)
**    --force-missing   Force check-out even if content is missing
**    --setmtime        Set timestamps of all files to match their SCM-side
**                      times (the timestamp of the last check-in which modified
**                      them)
**
** See also the "update" command.
** See also: [[update]]
*/
void checkout_cmd(void){
  int forceFlag;                 /* Force checkout even if edits exist */
  int forceFlag;                 /* Force check-out even if edits exist */
  int forceMissingFlag;          /* Force check-out even if missing content */
  int keepFlag;                  /* Do not change any files on disk */
  int latestFlag;                /* Checkout the latest version */
  char *zVers;                   /* Version to checkout */
  int latestFlag;                /* Check out the latest version */
  char *zVers;                   /* Version to check out */
  int promptFlag;                /* True to prompt before overwriting */
  int vid, prior;
  int setmtimeFlag;              /* --setmtime.  Set mtimes on files */
  Blob cksum1, cksum1b, cksum2;
  

  db_must_be_within_tree();
  db_begin_transaction();
  forceFlag = find_option("force","f",0)!=0;
  forceMissingFlag = find_option("force-missing",0,0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  latestFlag = find_option("latest",0,0)!=0;
  promptFlag = find_option("prompt",0,0)!=0 || forceFlag==0;
  setmtimeFlag = find_option("setmtime",0,0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  if( (latestFlag!=0 && g.argc!=2) || (latestFlag==0 && g.argc!=3) ){
     usage("VERSION|--latest ?--force? ?--keep?");
  }
  if( !forceFlag && unsaved_changes()==1 ){
    fossil_fatal("there are unsaved changes in the current checkout");
  if( !forceFlag && unsaved_changes(0) ){
    fossil_fatal("there are unsaved changes in the current check-out");
  }
  if( forceFlag ){
    db_multi_exec("DELETE FROM vfile");
    prior = 0;
  }else{
    prior = db_lget_int("checkout",0);
  }
  if( latestFlag ){
    compute_leaves(db_lget_int("checkout",0), 1);
    zVers = db_text(0, "SELECT uuid FROM leaves, event, blob"
                       " WHERE event.objid=leaves.rid AND blob.rid=leaves.rid"
                       " ORDER BY event.mtime DESC");
    if( zVers==0 ){
      zVers = db_text(0, "SELECT uuid FROM event, blob"
                         " WHERE event.objid=blob.rid AND event.type='ci'"
                         " ORDER BY event.mtime DESC");
    }
    if( zVers==0 ){
      fossil_fatal("cannot locate \"latest\" checkout");
      db_end_transaction(0);
      return;
    }
  }else{
    zVers = g.argv[2];
  }
  vid = load_vfile(zVers);
  vid = load_vfile(zVers, forceMissingFlag);
  if( prior==vid ){
    if( setmtimeFlag ) vfile_check_signature(vid, CKSIG_SETMTIME);
    db_end_transaction(0);
    return;
  }
  if( !keepFlag ){
    uncheckout(prior);
  }
  db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);
  if( !keepFlag ){
    vfile_to_disk(vid, 0, 1);
    vfile_to_disk(vid, 0, !g.fQuiet, promptFlag);
  }
  checkout_set_all_exe(vid);
  manifest_to_disk(vid);
  ensure_empty_dirs_created(0);
  db_lset_int("checkout", vid);
  db_set_checkout(vid);
  undo_reset();
  db_multi_exec("DELETE FROM vmerge");
  if( !keepFlag ){
  if( !keepFlag && db_get_boolean("repo-cksum",1) ){
    vfile_aggregate_checksum_manifest(vid, &cksum1, &cksum1b);
    vfile_aggregate_checksum_disk(vid, &cksum2);
    if( blob_compare(&cksum1, &cksum2) ){
      printf("WARNING: manifest checksum does not agree with disk\n");
      fossil_print("WARNING: manifest checksum does not agree with disk\n");
    }
    if( blob_compare(&cksum1, &cksum1b) ){
      printf("WARNING: manifest checksum does not agree with manifest\n");
    if( blob_size(&cksum1b) && blob_compare(&cksum1, &cksum1b) ){
      fossil_print("WARNING: manifest checksum does not agree with manifest\n");
    }
  }
  if( setmtimeFlag ) vfile_check_signature(vid, CKSIG_SETMTIME);
  db_end_transaction(0);
}

/*
** Unlink the local database file
*/
void unlink_local_database(void){
  static const char *azFile[] = {
static void unlink_local_database(int manifestOnly){
  const char *zReserved;
     "%s_FOSSIL_",
     "%s_FOSSIL_-journal",
     "%s.fos",
     "%s.fos-journal",
  };
  int i;
  for(i=0; i<sizeof(azFile)/sizeof(azFile[0]); i++){
    char *z = mprintf(azFile[i], g.zLocalRoot);
    unlink(z);
    free(z);
  for(i=0; (zReserved = fossil_reserved_name(i, 1))!=0; i++){
    if( manifestOnly==0 || zReserved[0]=='m' ){
      char *z;
      z = mprintf("%s%s", g.zLocalRoot, zReserved);
      file_delete(z);
      free(z);
    }
  }
}

/*
** COMMAND: close
** COMMAND: close*
**
** Usage: %fossil close ?-f|--force?
** Usage: %fossil close ?OPTIONS?
**
** The opposite of "open".  Close the current database connection.
** Require a -f or --force flag if there are unsaved changed in the
** current check-out.
** The opposite of "[[open]]".  Close the current database connection.
** Require a -f or --force flag if there are unsaved changes in the
** current check-out or if there is non-empty stash.
**
** Options:
**   -f|--force  Necessary to close a check-out with uncommitted changes
**
** See also: [[open]]
*/
void close_cmd(void){
  int forceFlag = find_option("force","f",0)!=0;
  db_must_be_within_tree();

  /* We should be done with options.. */
  verify_all_options();

  if( !forceFlag && unsaved_changes()==1 ){
    fossil_fatal("there are unsaved changes in the current checkout");
  if( !forceFlag && unsaved_changes(0) ){
    fossil_fatal("there are unsaved changes in the current check-out");
  }
  if( !forceFlag
   && db_table_exists("localdb","stash")
   && db_exists("SELECT 1 FROM localdb.stash")
  ){
    fossil_fatal("closing the check-out will delete your stash");
  }
  if( db_is_writeable("repository") ){
    db_unset_mprintf(1, "ckout:%q", g.zLocalRoot);
  }
  unlink_local_database(1);
  db_close();
  unlink_local_database();
  db_close(1);
  unlink_local_database(0);
}
Added src/ci_edit.js.


































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/* Javascript used to make the check-in edit screen more interactive.
*/
function chgcbn(){
  var newbr = document.getElementById('newbr');
  var brname = document.getElementById('brname');
  var checked = newbr.checked;
  var x = brname.value.trim();
  if( !x || !newbr.checked ) x = newbr.getAttribute('data-branch');
  if( newbr.checked ) brname.select();
  document.getElementById('hbranch').textContent = x;
  cidbrid = document.getElementById('cbranch');
  if( cidbrid ) cidbrid.textContent = x;
}
function chgbn(){
  var newbr = document.getElementById('newbr');
  var brname = document.getElementById('brname');
  var x = brname.value.trim();
  var br = newbr.getAttribute('data-branch');
  if( !x ) x = br;
  newbr.checked = (x!=br);
  document.getElementById('hbranch').textContent = x;
  cidbrid = document.getElementById('cbranch');
  if( cidbrid ) cidbrid.textContent = x;
}
function chgtn(){
  var newtag = document.getElementById('newtag');
  var tagname = document.getElementById('tagname');
  newtag.checked=!!tagname.value;
}
(function(){
  document.getElementById('newbr').onchange = chgcbn;
  document.getElementById('brname').onkeyup = chgbn;
  document.getElementById('tagname').onkeyup = chgtn;
}());
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    return 0;
  }
  zRand = db_text(0, "SELECT hex(randomblob(10))");
  zOut = mprintf("out-%s", zRand);
  zIn = mprintf("in-%z", zRand);
  blob_write_to_file(pIn, zOut);
  zCmd = mprintf("%s %s %s", zBase, zIn, zOut);
  rc = portable_system(zCmd);
  rc = fossil_system(zCmd);
  free(zCmd);
  if( rc==0 ){
    if( pOut==pIn ){
      blob_reset(pIn);
    }
    blob_zero(pOut);
    blob_read_from_file(pOut, zIn);
    blob_read_from_file(pOut, zIn, ExtFILE);
  }else{
    if( pOut!=pIn ){
      blob_copy(pOut, pIn);
    }
  }
  unlink(zOut);
  unlink(zIn);
  file_delete(zOut);
  file_delete(zIn);
  free(zOut);
  free(zIn);
  return rc;
}
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**
** This file contains code used to clone a repository
*/
#include "config.h"
#include "clone.h"
#include <assert.h>

/*
** If there are public BLOBs that deltas from private BLOBs, then
** undeltify the public BLOBs so that the private BLOBs may be safely
** deleted.
*/
void fix_private_blob_dependencies(int showWarning){
  Bag toUndelta;
  Stmt q;
  int rid;

  /* Careful:  We are about to delete all BLOB entries that are private.
  ** So make sure that any no public BLOBs are deltas from a private BLOB.
  ** Otherwise after the deletion, we won't be able to recreate the public
  ** BLOBs.
  */
  db_prepare(&q,
    "SELECT "
    "   rid, (SELECT uuid FROM blob WHERE rid=delta.rid),"
    "   srcid, (SELECT uuid FROM blob WHERE rid=delta.srcid)"
    "  FROM delta"
    " WHERE srcid in private AND rid NOT IN private"
  );
  bag_init(&toUndelta);
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zId = db_column_text(&q, 1);
    int srcid = db_column_int(&q, 2);
    const char *zSrc = db_column_text(&q, 3);
    if( showWarning ){
      fossil_warning(
        "public artifact %S (%d) is a delta from private artifact %S (%d)",
        zId, rid, zSrc, srcid
      );
    }
    bag_insert(&toUndelta, rid);
  }
  db_finalize(&q);
  while( (rid = bag_first(&toUndelta))>0 ){
    content_undelta(rid);
    bag_remove(&toUndelta, rid);
  }
  bag_clear(&toUndelta);
}

/*
** Delete all private content from a repository.
*/
void delete_private_content(void){
  fix_private_blob_dependencies(1);
  db_multi_exec(
    "DELETE FROM blob WHERE rid IN private;"
    "DELETE FROM delta WHERE rid IN private;"
    "DELETE FROM private;"
    "DROP TABLE IF EXISTS modreq;"
  );
}


/*
** COMMAND: clone
**
** Usage: %fossil clone ?OPTIONS? URL FILENAME
** Usage: %fossil clone ?OPTIONS? URI ?FILENAME?
**
** Make a clone of a repository specified by URL in the local
** file named FILENAME.  
** Make a clone of a repository specified by URI in the local
** file named FILENAME.  If FILENAME is omitted, then an appropriate
** filename is deduced from last element of the path in the URL.
**
** URI may be one of the following forms ([...] denotes optional elements):
**
**  * HTTP/HTTPS protocol:
**
**      http[s]://[userid[:password]@]host[:port][/path]
**
**  * SSH protocol:
**
**      ssh://[userid@]host[:port]/path/to/repo.fossil[?fossil=path/fossil.exe]
**
**  * Filesystem:
**
**      [file://]path/to/repo.fossil
**
** For ssh and filesystem, path must have an extra leading
** '/' to use an absolute path.
**
** Use %HH escapes for special characters in the userid and
** password.  For example "%40" in place of "@", "%2f" in place
** of "/", and "%3a" in place of ":".
**
** Note that in Fossil (in contrast to some other DVCSes) a repository
** is distinct from a check-out.  Cloning a repository is not the same thing
** as opening a repository.  This command always clones the repository.  This
** command might also open the repository, but only if the --no-open option
** is omitted and either the --workdir option is included or the FILENAME
** argument is omitted.  Use the separate [[open]] command to open a
** repository that was previously cloned and already exists on the
** local machine.
**
** By default, your current login name is used to create the default
** admin user. This can be overridden using the -A|--admin-user
** parameter.
** By default, the current login name is used to create the default
** admin user for the new clone. This can be overridden using
** the -A|--admin-user parameter.
**
** Options:
**
**    --admin-user|-A USERNAME
**    -A|--admin-user USERNAME   Make USERNAME the administrator
**    -B|--httpauth USER:PASS    Add HTTP Basic Authorization to requests
**    --nested                   Allow opening a repository inside an opened
**                               check-out
**    --nocompress               Omit extra delta compression
**    --no-open                  Clone only.  Do not open a check-out.
**    --once                     Don't remember the URI.
**    --private                  Also clone private branches
**    --save-http-password       Remember the HTTP password without asking
**    -c|--ssh-command SSH       Use SSH as the "ssh" command
**    --ssl-identity FILENAME    Use the SSL identity if requested by the server
**    --transport-command CMD    Use CMD to move messages to the server and back
**    -u|--unversioned           Also sync unversioned content
**    -v|--verbose               Show more statistics in output
**    --workdir DIR              Also open a check-out in DIR
**    --xverbose                 Extra debugging output
**
** See also: [[init]], [[open]]
*/
void clone_cmd(void){
  char *zPassword;
  const char *zDefaultUser;   /* Optional name of the default user */
  const char *zHttpAuth;      /* HTTP Authorization user:pass information */
  int nErr = 0;
  int urlFlags = URL_PROMPT_PW | URL_REMEMBER;
  int syncFlags = SYNC_CLONE;
  int noCompress = find_option("nocompress",0,0)!=0;
  int noOpen = find_option("no-open",0,0)!=0;
  int allowNested = find_option("nested",0,0)!=0; /* Used by open */
  const char *zRepo = 0;      /* Name of the new local repository file */
  const char *zWorkDir = 0;   /* Open in this directory, if not zero */

  url_proxy_options();
  if( g.argc < 4 ){

  /* Also clone private branches */
  if( find_option("private",0,0)!=0 ) syncFlags |= SYNC_PRIVATE;
  if( find_option("once",0,0)!=0) urlFlags &= ~URL_REMEMBER;
  if( find_option("save-http-password",0,0)!=0 ){
    usage("?OPTIONS? FILE-OR-URL NEW-REPOSITORY");
    urlFlags &= ~URL_PROMPT_PW;
    urlFlags |= URL_REMEMBER_PW;
  }
  if( find_option("verbose","v",0)!=0) syncFlags |= SYNC_VERBOSE;
  if( find_option("xverbose",0,0)!=0) syncFlags |= SYNC_XVERBOSE;
  db_open_config(0);
  if( file_size(g.argv[3])>0 ){
  if( find_option("unversioned","u",0)!=0 ){
    syncFlags |= SYNC_UNVERSIONED;
    if( syncFlags & SYNC_VERBOSE ){
    fossil_panic("file already exists: %s", g.argv[3]);
  }

      syncFlags |= SYNC_UV_TRACE;
    }
  }
  zHttpAuth = find_option("httpauth","B",1);
  zDefaultUser = find_option("admin-user","A",1);
  zWorkDir = find_option("workdir", 0, 1);
  clone_ssh_find_options();
  url_proxy_options();
  g.zHttpCmd = find_option("transport-command",0,1);

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc < 3 ){
    usage("?OPTIONS? FILE-OR-URL ?NEW-REPOSITORY?");
  }
  db_open_config(0, 0);
  if( g.argc==4 ){
    zRepo = g.argv[3];
  }else{
    char *zBase = url_to_repo_basename(g.argv[2]);
    if( zBase==0 ){
      fossil_fatal(
        "unable to guess a repository name from the url \"%s\".\n"
        "give the repository filename as an additional argument.",
        g.argv[2]);
    }
    zRepo = mprintf("./%s.fossil", zBase);
    if( zWorkDir==0 ){
      zWorkDir = mprintf("./%s", zBase);
    }
    fossil_free(zBase);
  }
  if( -1 != file_size(zRepo, ExtFILE) ){
    fossil_fatal("file already exists: %s", zRepo);
  }
  /* Fail before clone if open will fail because inside an open check-out */
  if( zWorkDir!=0 && zWorkDir[0]!=0 && !noOpen ){
    if( db_open_local_v2(0, allowNested) ){
      fossil_fatal("there is already an open tree at %s", g.zLocalRoot);
    }
  }
  url_parse(g.argv[2]);
  if( g.urlIsFile ){
    file_copy(g.urlName, g.argv[3]);
    db_close();
    db_open_repository(g.argv[3]);
    db_record_repository_filename(g.argv[3]);
  url_parse(g.argv[2], urlFlags);
  if( zDefaultUser==0 && g.url.user!=0 ) zDefaultUser = g.url.user;
  if( g.url.isFile ){
    file_copy(g.url.name, zRepo);
    db_close(1);
    db_open_repository(zRepo);
    db_open_config(1,0);
    db_record_repository_filename(zRepo);
    db_multi_exec(
      "REPLACE INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
      "REPLACE INTO config(name,value)"
      " VALUES('last-sync-url', '%q');",
      g.urlCanonical
    );
    url_remember();
    db_multi_exec(
       "DELETE FROM blob WHERE rid IN private;"
       "DELETE FROM delta wHERE rid IN private;"
       "DELETE FROM private;"
    if( !(syncFlags & SYNC_PRIVATE) ) delete_private_content();
    );
    shun_artifacts();
    db_create_default_users(1, zDefaultUser);
    if( zDefaultUser ){
      g.zLogin = zDefaultUser;
    }else{
    g.zLogin = db_text(0, "SELECT login FROM user WHERE cap LIKE '%%s%%'");
      g.zLogin = db_text(0, "SELECT login FROM user WHERE cap LIKE '%%s%%'");
    if( g.zLogin==0 ){
      db_create_default_users(1,zDefaultUser);
    }
    printf("Repository cloned into %s\n", g.argv[3]);
    fossil_print("Repository cloned into %s\n", zRepo);
  }else{
    db_close_config();
    db_create_repository(g.argv[3]);
    db_open_repository(g.argv[3]);
    db_create_repository(zRepo);
    db_open_repository(zRepo);
    db_open_config(0,0);
    db_begin_transaction();
    db_record_repository_filename(g.argv[3]);
    db_initial_setup(0, zDefaultUser, 0);
    db_record_repository_filename(zRepo);
    db_initial_setup(0, 0, zDefaultUser);
    user_select();
    db_set("content-schema", CONTENT_SCHEMA, 0);
    db_set("aux-schema", AUX_SCHEMA, 0);
    db_set("last-sync-url", g.argv[2], 0);
    db_set("aux-schema", AUX_SCHEMA_MAX, 0);
    db_set("rebuilt", get_version(), 0);
    db_unset("hash-policy", 0);
    remember_or_get_http_auth(zHttpAuth, urlFlags & URL_REMEMBER, g.argv[2]);
    url_remember();
    if( g.zSSLIdentity!=0 ){
      /* If the --ssl-identity option was specified, store it as a setting */
      Blob fn;
      blob_zero(&fn);
      file_canonical_name(g.zSSLIdentity, &fn, 0);
      db_unprotect(PROTECT_ALL);
      db_set("ssl-identity", blob_str(&fn), 0);
      db_protect_pop();
      blob_reset(&fn);
    }
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "REPLACE INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
      "REPLACE INTO config(name,value,mtime)"
      " VALUES('server-code', lower(hex(randomblob(20))), now());"
      "DELETE FROM config WHERE name='project-code';"
    );
    db_protect_pop();
    url_enable_proxy(0);
    clone_ssh_db_set_options();
    url_get_password_if_needed();
    g.xlinkClusterOnly = 1;
    client_sync(0,0,1,CONFIGSET_ALL,0);
    nErr = client_sync(syncFlags,CONFIGSET_ALL,0,0,0);
    g.xlinkClusterOnly = 0;
    verify_cancel();
    db_end_transaction(0);
    db_close();
    db_open_repository(g.argv[3]);
    db_close(1);
    if( nErr ){
      file_delete(zRepo);
      if( g.fHttpTrace ){
        fossil_fatal(
          "server returned an error - clone aborted\n\n%s",
          http_last_trace_reply()
        );
      }else{
        fossil_fatal(
          "server returned an error - clone aborted\n"
          "Rerun using --httptrace for more detail"
        );
      }
    }
    db_open_repository(zRepo);
  }
  db_begin_transaction();
  if( db_exists("SELECT 1 FROM delta WHERE srcId IN phantom") ){
    fossil_fatal("there are unresolved deltas -"
                 " the clone is probably incomplete and unusable.");
  }
  printf("Rebuilding repository meta-data...\n");
  rebuild_db(0, 1);
  printf("project-id: %s\n", db_get("project-code", 0));
  printf("server-id:  %s\n", db_get("server-code", 0));
  fossil_print("Rebuilding repository meta-data...\n");
  rebuild_db(1, 0);
  if( !noCompress ){
    int nDelta = 0;
    i64 nByte;
    fossil_print("Extra delta compression... "); fflush(stdout);
    nByte = extra_deltification(&nDelta);
    if( nDelta==1 ){
      fossil_print("1 delta saves %,lld bytes\n", nByte);
    }else if( nDelta>1 ){
      fossil_print("%d deltas save %,lld bytes\n", nDelta, nByte);
    }else{
      fossil_print("none found\n");
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  printf("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
    }
  }
  db_end_transaction(0);
  fossil_print("Vacuuming the database... "); fflush(stdout);
  if( db_int(0, "PRAGMA page_count")>1000
   && db_int(0, "PRAGMA page_size")<8192 ){
     db_multi_exec("PRAGMA page_size=8192;");
  }
  db_unprotect(PROTECT_ALL);
  db_multi_exec("VACUUM");
  db_protect_pop();
  fossil_print("\nproject-id: %s\n", db_get("project-code", 0));
  fossil_print("server-id:  %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  fossil_print("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
  hash_user_password(g.zLogin);
  if( zWorkDir!=0 && zWorkDir[0]!=0 && !noOpen ){
    Blob cmd;
    fossil_print("opening the new %s repository in directory %s...\n",
       zRepo, zWorkDir);
    blob_init(&cmd, 0, 0);
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    blob_append(&cmd, " open ", -1);
    blob_append_escaped_arg(&cmd, zRepo, 1);
    blob_append(&cmd, " --nosync --workdir ", -1);
    blob_append_escaped_arg(&cmd, zWorkDir, 1);
    if( allowNested ){
      blob_append(&cmd, " --nested", -1);
    }
    fossil_system(blob_str(&cmd));
    blob_reset(&cmd);
  }
}

/*
** If user chooses to use HTTP Authentication over unencrypted HTTP,
** remember decision.  Otherwise, if the URL is being changed and no
** preference has been indicated, err on the safe side and revert the
** decision. Set the global preference if the URL is not being changed.
*/
void remember_or_get_http_auth(
  const char *zHttpAuth,  /* Credentials in the form "user:password" */
  int fRemember,          /* True to remember credentials for later reuse */
  const char *zUrl        /* URL for which these credentials apply */
){
  if( zHttpAuth && zHttpAuth[0] ){
    g.zHttpAuth = mprintf("%s", zHttpAuth);
  }
  if( fRemember ){
    if( g.zHttpAuth && g.zHttpAuth[0] ){
      set_httpauth(g.zHttpAuth);
    }else if( zUrl && zUrl[0] ){
      db_unset_mprintf(0, "http-auth:%s", g.url.canonical);
    }else{
      g.zHttpAuth = get_httpauth();
    }
  }else if( g.zHttpAuth==0 && zUrl==0 ){
    g.zHttpAuth = get_httpauth();
  }
}

/*
** Get the HTTP Authorization preference from db.
*/
char *get_httpauth(void){
  char *zKey = mprintf("http-auth:%s", g.url.canonical);
  char * rc = unobscure(db_get(zKey, 0));
  free(zKey);
  return rc;
}

/*
** Set the HTTP Authorization preference in db.
*/
void set_httpauth(const char *zHttpAuth){
  db_set_mprintf(obscure(zHttpAuth), 0, "http-auth:%s", g.url.canonical);
}

/*
** Look for SSH clone command line options and setup in globals.
*/
void clone_ssh_find_options(void){
  const char *zSshCmd;        /* SSH command string */

  zSshCmd = find_option("ssh-command","c",1);
  if( zSshCmd && zSshCmd[0] ){
    g.zSshCmd = mprintf("%s", zSshCmd);
  }
}

/*
** Set SSH options discovered in global variables (set from command line
** options).
*/
void clone_ssh_db_set_options(void){
  if( g.zSshCmd && g.zSshCmd[0] ){
    db_unprotect(PROTECT_ALL);
    db_set("ssh-command", g.zSshCmd, 0);
    db_protect_pop();
  }
}

/*
** WEBPAGE: download
**
** Provide a simple page that enables newbies to download the latest tarball or
** ZIP archive, and provides instructions on how to clone.
*/
void download_page(void){
  login_check_credentials();
  cgi_check_for_malice();
  style_header("Download Page");
  if( !g.perm.Zip ){
    @ <p>Bummer.  You do not have permission to download.
    if( g.zLogin==0 || g.zLogin[0]==0 ){
      @ Maybe it would work better if you
      @ %z(href("%R/login"))logged in</a>.
    }else{
      @ Contact the site administrator and ask them to give
      @ you "Download Zip" privileges.
    }
  }else{
    const char *zDLTag = db_get("download-tag","trunk");
    const char *zNm = db_get("short-project-name","download");
    char *zUrl = href("%R/zip/%t/%t.zip", zDLTag, zNm);
    @ <p>ZIP Archive: %z(zUrl)%h(zNm).zip</a>
    zUrl = href("%R/tarball/%t/%t.tar.gz", zDLTag, zNm);
    @ <p>Tarball: %z(zUrl)%h(zNm).tar.gz</a>
    zUrl = href("%R/sqlar/%t/%t.sqlar", zDLTag, zNm);
    @ <p>SQLite Archive: %z(zUrl)%h(zNm).sqlar</a>
  }
  if( !g.perm.Clone ){
    @ <p>You are not authorized to clone this repository.
    if( g.zLogin==0 || g.zLogin[0]==0 ){
      @ Maybe you would be able to clone if you
      @ %z(href("%R/login"))logged in</a>.
    }else{
      @ Contact the site administrator and ask them to give
      @ you "Clone" privileges in order to clone.
    }
  }else{
    const char *zNm = db_get("short-project-name","clone");
    @ <p>Clone the repository using this command:
    @ <blockquote><pre>
    @ fossil  clone  %s(g.zBaseURL)  %h(zNm).fossil
    @ </pre></blockquote>
  }
  style_finish_page();
}
Added src/color.c.





























































































































































































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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to select colors based on branch and
** user names.
**
*/
#include "config.h"
#include <string.h>
#include "color.h"

/*
** Compute a hash on a branch or user name
*/
static unsigned int hash_of_name(const char *z){
  unsigned int h = 0;
  int i;
  for(i=0; z[i]; i++ ){
    h = (h<<11) ^ (h<<1) ^ (h>>3) ^ z[i];
  }
  return h;
}

/*
** Hash a string and use the hash to determine a background color.
**
** This value returned is in static space and is overwritten with
** each subsequent call.
*/
char *hash_color(const char *z){
  unsigned int h = 0;          /* Hash on the branch name */
  int r, g, b;                 /* Values for red, green, and blue */
  int h1, h2, h3, h4;          /* Elements of the hash value */
  int mx, mn;                  /* Components of HSV */
  static char zColor[10];      /* The resulting color */
  static int ix[3] = {0,0};    /* Color chooser parameters */

  if( ix[0]==0 ){
    if( skin_detail_boolean("white-foreground") ){
      ix[0] = 0x50;
      ix[1] = 0x20;
    }else{
      ix[0] = 0xf8;
      ix[1] = 0x20;
    }
  }
  h = hash_of_name(z);
  h1 = h % 6;  h /= 6;
  h3 = h % 10; h /= 10;
  h4 = h % 10; h /= 10;
  mx = ix[0] - h3;
  mn = mx - h4 - ix[1];
  h2 = (h%(mx - mn)) + mn;
  switch( h1 ){
    case 0:  r = mx; g = h2, b = mn;  break;
    case 1:  r = h2; g = mx, b = mn;  break;
    case 2:  r = mn; g = mx, b = h2;  break;
    case 3:  r = mn; g = h2, b = mx;  break;
    case 4:  r = h2; g = mn, b = mx;  break;
    default: r = mx; g = mn, b = h2;  break;
  }
  sqlite3_snprintf(8, zColor, "#%02x%02x%02x", r,g,b);
  return zColor;
}

/*
** Determine a color for users based on their login string.
**
** SETTING: user-color-map          width=40 block-text
**
** The user-color-map setting can be used to override user color choices.
** The setting is a list of space-separated words pairs.  The first word
** of each pair is a login name.  The second word is an alternative name
** used by the color chooser algorithm.
**
** This list is intended to be relatively short.  The idea is to only use
** this map to resolve color collisions between common users.
**
** Visit /hash-color-test?rand for a list of suggested names for the
** second word of each pair in the list.
*/
char *user_color(const char *zLogin){
  static int once = 0;
  static int nMap = 0;
  static char **azMap = 0;
  static int *anMap = 0;
  int i;
  if( !once ){
    char *zMap = (char*)db_get("user-color-map",0);
    once = 1;
    if( zMap && zMap[0] ){
      if( !g.interp ) Th_FossilInit(0);
      Th_SplitList(g.interp, zMap, (int)strlen(zMap),
                   &azMap, &anMap, &nMap);
      for(i=0; i<nMap; i++) azMap[i][anMap[i]] = 0;
    }
  }
  for(i=0; i<nMap-1; i+=2){
    if( strcmp(zLogin, azMap[i])==0 ) return hash_color(azMap[i+1]);
  }
  return hash_color(zLogin);
}

/*
** COMMAND: test-hash-color
**
** Usage: %fossil test-hash-color TAG ...
**
** Print out the color names associated with each tag.  Used for
** testing the hash_color() function.
*/
void test_hash_color(void){
  int i;
  for(i=2; i<g.argc; i++){
    fossil_print("%20s: %s\n", g.argv[i], hash_color(g.argv[i]));
  }
}

/*
** WEBPAGE: hash-color-test
**
** Print out the color names associated with each tag.  Used for
** testing the hash_color() function.
*/
void test_hash_color_page(void){
  const char *zBr;
  char zNm[10];
  int i, cnt;
  login_check_credentials();
  if( P("rand")!=0 ){
    int j;
    for(i=0; i<10; i++){
      sqlite3_uint64 u;
      char zClr[10];
      sqlite3_randomness(sizeof(u), &u);
      cnt = 3+(u%2);
      u /= 2;
      for(j=0; j<cnt; j++){
         zClr[j] = 'a' + (u%26);
         u /= 26;
       }
      zClr[j] = 0;
      sqlite3_snprintf(sizeof(zNm),zNm,"b%d",i);
      cgi_replace_parameter(fossil_strdup(zNm), fossil_strdup(zClr));
    }
  }
  style_set_current_feature("test");
  style_header("Hash Color Test");
  for(i=cnt=0; i<10; i++){
    sqlite3_snprintf(sizeof(zNm),zNm,"b%d",i);
    zBr = P(zNm);
    if( zBr && zBr[0] ){
      @ <p style='border:1px solid;background-color:%s(hash_color(zBr));'>
      @ %h(zBr) - hash 0x%x(hash_of_name(zBr)) - color %s(hash_color(zBr)) -
      @ Omnes nos quasi oves erravimus unusquisque in viam
      @ suam declinavit.</p>
      cnt++;
    }
  }
  if( cnt ){
    @ <hr>
  }
  @ <form method="POST">
  @ <p>Enter candidate branch names below and see them displayed in their
  @ default background colors above.</p>
  for(i=0; i<10; i++){
    sqlite3_snprintf(sizeof(zNm),zNm,"b%d",i);
    zBr = P(zNm);
    @ <input type="text" size="30" name='%s(zNm)' value='%h(PD(zNm,""))'><br>
  }
  @ <input type="submit" value="Submit">
  @ <input type="submit" name="rand" value="Random">
  @ </form>
  style_finish_page();
}
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to format and print comments or other
** text on a TTY.
*/
#include "config.h"
#include "comformat.h"
#include <assert.h>

#if INTERFACE
#define COMMENT_PRINT_NONE       ((u32)0x00000000) /* No flags = non-legacy. */
#define COMMENT_PRINT_LEGACY     ((u32)0x00000001) /* Use legacy algorithm. */
#define COMMENT_PRINT_TRIM_CRLF  ((u32)0x00000002) /* Trim leading CR/LF. */
#define COMMENT_PRINT_TRIM_SPACE ((u32)0x00000004) /* Trim leading/trailing. */
#define COMMENT_PRINT_WORD_BREAK ((u32)0x00000008) /* Break lines on words. */
#define COMMENT_PRINT_ORIG_BREAK ((u32)0x00000010) /* Break before original. */
#define COMMENT_PRINT_DEFAULT    (COMMENT_PRINT_LEGACY) /* Defaults. */
#define COMMENT_PRINT_UNSET      (-1)              /* Not initialized. */
#endif

/********* Code copied from SQLite src/shell.c.in on 2024-09-30 **********/
/* Lookup table to estimate the number of columns consumed by a Unicode
** character.
*/
static const struct {
  unsigned char w;    /* Width of the character in columns */
  int iFirst;         /* First character in a span having this width */
} aUWidth[] = {
   /* {1, 0x00000}, */
  {0, 0x00300},  {1, 0x00370},  {0, 0x00483},  {1, 0x00487},  {0, 0x00488},
  {1, 0x0048a},  {0, 0x00591},  {1, 0x005be},  {0, 0x005bf},  {1, 0x005c0},
  {0, 0x005c1},  {1, 0x005c3},  {0, 0x005c4},  {1, 0x005c6},  {0, 0x005c7},
  {1, 0x005c8},  {0, 0x00600},  {1, 0x00604},  {0, 0x00610},  {1, 0x00616},
  {0, 0x0064b},  {1, 0x0065f},  {0, 0x00670},  {1, 0x00671},  {0, 0x006d6},
  {1, 0x006e5},  {0, 0x006e7},  {1, 0x006e9},  {0, 0x006ea},  {1, 0x006ee},
  {0, 0x0070f},  {1, 0x00710},  {0, 0x00711},  {1, 0x00712},  {0, 0x00730},
  {1, 0x0074b},  {0, 0x007a6},  {1, 0x007b1},  {0, 0x007eb},  {1, 0x007f4},
  {0, 0x00901},  {1, 0x00903},  {0, 0x0093c},  {1, 0x0093d},  {0, 0x00941},
  {1, 0x00949},  {0, 0x0094d},  {1, 0x0094e},  {0, 0x00951},  {1, 0x00955},
  {0, 0x00962},  {1, 0x00964},  {0, 0x00981},  {1, 0x00982},  {0, 0x009bc},
  {1, 0x009bd},  {0, 0x009c1},  {1, 0x009c5},  {0, 0x009cd},  {1, 0x009ce},
  {0, 0x009e2},  {1, 0x009e4},  {0, 0x00a01},  {1, 0x00a03},  {0, 0x00a3c},
  {1, 0x00a3d},  {0, 0x00a41},  {1, 0x00a43},  {0, 0x00a47},  {1, 0x00a49},
  {0, 0x00a4b},  {1, 0x00a4e},  {0, 0x00a70},  {1, 0x00a72},  {0, 0x00a81},
  {1, 0x00a83},  {0, 0x00abc},  {1, 0x00abd},  {0, 0x00ac1},  {1, 0x00ac6},
  {0, 0x00ac7},  {1, 0x00ac9},  {0, 0x00acd},  {1, 0x00ace},  {0, 0x00ae2},
  {1, 0x00ae4},  {0, 0x00b01},  {1, 0x00b02},  {0, 0x00b3c},  {1, 0x00b3d},
  {0, 0x00b3f},  {1, 0x00b40},  {0, 0x00b41},  {1, 0x00b44},  {0, 0x00b4d},
  {1, 0x00b4e},  {0, 0x00b56},  {1, 0x00b57},  {0, 0x00b82},  {1, 0x00b83},
  {0, 0x00bc0},  {1, 0x00bc1},  {0, 0x00bcd},  {1, 0x00bce},  {0, 0x00c3e},
  {1, 0x00c41},  {0, 0x00c46},  {1, 0x00c49},  {0, 0x00c4a},  {1, 0x00c4e},
  {0, 0x00c55},  {1, 0x00c57},  {0, 0x00cbc},  {1, 0x00cbd},  {0, 0x00cbf},
  {1, 0x00cc0},  {0, 0x00cc6},  {1, 0x00cc7},  {0, 0x00ccc},  {1, 0x00cce},
  {0, 0x00ce2},  {1, 0x00ce4},  {0, 0x00d41},  {1, 0x00d44},  {0, 0x00d4d},
  {1, 0x00d4e},  {0, 0x00dca},  {1, 0x00dcb},  {0, 0x00dd2},  {1, 0x00dd5},
  {0, 0x00dd6},  {1, 0x00dd7},  {0, 0x00e31},  {1, 0x00e32},  {0, 0x00e34},
  {1, 0x00e3b},  {0, 0x00e47},  {1, 0x00e4f},  {0, 0x00eb1},  {1, 0x00eb2},
  {0, 0x00eb4},  {1, 0x00eba},  {0, 0x00ebb},  {1, 0x00ebd},  {0, 0x00ec8},
  {1, 0x00ece},  {0, 0x00f18},  {1, 0x00f1a},  {0, 0x00f35},  {1, 0x00f36},
  {0, 0x00f37},  {1, 0x00f38},  {0, 0x00f39},  {1, 0x00f3a},  {0, 0x00f71},
  {1, 0x00f7f},  {0, 0x00f80},  {1, 0x00f85},  {0, 0x00f86},  {1, 0x00f88},
  {0, 0x00f90},  {1, 0x00f98},  {0, 0x00f99},  {1, 0x00fbd},  {0, 0x00fc6},
  {1, 0x00fc7},  {0, 0x0102d},  {1, 0x01031},  {0, 0x01032},  {1, 0x01033},
  {0, 0x01036},  {1, 0x01038},  {0, 0x01039},  {1, 0x0103a},  {0, 0x01058},
  {1, 0x0105a},  {2, 0x01100},  {0, 0x01160},  {1, 0x01200},  {0, 0x0135f},
  {1, 0x01360},  {0, 0x01712},  {1, 0x01715},  {0, 0x01732},  {1, 0x01735},
  {0, 0x01752},  {1, 0x01754},  {0, 0x01772},  {1, 0x01774},  {0, 0x017b4},
  {1, 0x017b6},  {0, 0x017b7},  {1, 0x017be},  {0, 0x017c6},  {1, 0x017c7},
  {0, 0x017c9},  {1, 0x017d4},  {0, 0x017dd},  {1, 0x017de},  {0, 0x0180b},
  {1, 0x0180e},  {0, 0x018a9},  {1, 0x018aa},  {0, 0x01920},  {1, 0x01923},
  {0, 0x01927},  {1, 0x01929},  {0, 0x01932},  {1, 0x01933},  {0, 0x01939},
  {1, 0x0193c},  {0, 0x01a17},  {1, 0x01a19},  {0, 0x01b00},  {1, 0x01b04},
  {0, 0x01b34},  {1, 0x01b35},  {0, 0x01b36},  {1, 0x01b3b},  {0, 0x01b3c},
  {1, 0x01b3d},  {0, 0x01b42},  {1, 0x01b43},  {0, 0x01b6b},  {1, 0x01b74},
  {0, 0x01dc0},  {1, 0x01dcb},  {0, 0x01dfe},  {1, 0x01e00},  {0, 0x0200b},
  {1, 0x02010},  {0, 0x0202a},  {1, 0x0202f},  {0, 0x02060},  {1, 0x02064},
  {0, 0x0206a},  {1, 0x02070},  {0, 0x020d0},  {1, 0x020f0},  {2, 0x02329},
  {1, 0x0232b},  {2, 0x02e80},  {0, 0x0302a},  {2, 0x03030},  {1, 0x0303f},
  {2, 0x03040},  {0, 0x03099},  {2, 0x0309b},  {1, 0x0a4d0},  {0, 0x0a806},
  {1, 0x0a807},  {0, 0x0a80b},  {1, 0x0a80c},  {0, 0x0a825},  {1, 0x0a827},
  {2, 0x0ac00},  {1, 0x0d7a4},  {2, 0x0f900},  {1, 0x0fb00},  {0, 0x0fb1e},
  {1, 0x0fb1f},  {0, 0x0fe00},  {2, 0x0fe10},  {1, 0x0fe1a},  {0, 0x0fe20},
  {1, 0x0fe24},  {2, 0x0fe30},  {1, 0x0fe70},  {0, 0x0feff},  {2, 0x0ff00},
  {1, 0x0ff61},  {2, 0x0ffe0},  {1, 0x0ffe7},  {0, 0x0fff9},  {1, 0x0fffc},
  {0, 0x10a01},  {1, 0x10a04},  {0, 0x10a05},  {1, 0x10a07},  {0, 0x10a0c},
  {1, 0x10a10},  {0, 0x10a38},  {1, 0x10a3b},  {0, 0x10a3f},  {1, 0x10a40},
  {0, 0x1d167},  {1, 0x1d16a},  {0, 0x1d173},  {1, 0x1d183},  {0, 0x1d185},
  {1, 0x1d18c},  {0, 0x1d1aa},  {1, 0x1d1ae},  {0, 0x1d242},  {1, 0x1d245},
  {2, 0x20000},  {1, 0x2fffe},  {2, 0x30000},  {1, 0x3fffe},  {0, 0xe0001},
  {1, 0xe0002},  {0, 0xe0020},  {1, 0xe0080},  {0, 0xe0100},  {1, 0xe01f0}
};

/*
** Return an estimate of the width, in columns, for the single Unicode
** character c.  For normal characters, the answer is always 1.  But the
** estimate might be 0 or 2 for zero-width and double-width characters.
**
** Different display devices display unicode using different widths.  So
** it is impossible to know that true display width with 100% accuracy.
** Inaccuracies in the width estimates might cause columns to be misaligned.
** Unfortunately, there is nothing we can do about that.
*/
static int cli_wcwidth(int c){
  int iFirst, iLast;

  /* Fast path for common characters */
  if( c<=0x300 ) return 1;

  /* The general case */
  iFirst = 0;
  iLast = sizeof(aUWidth)/sizeof(aUWidth[0]) - 1;
  while( iFirst<iLast-1 ){
    int iMid = (iFirst+iLast)/2;
    int cMid = aUWidth[iMid].iFirst;
    if( cMid < c ){
      iFirst = iMid;
    }else if( cMid > c ){
      iLast = iMid - 1;
    }else{
      return aUWidth[iMid].w;
    }
  }
  if( aUWidth[iLast].iFirst > c ) return aUWidth[iFirst].w;
  return aUWidth[iLast].w;
}
/******* End of code copied from SQLite *************************************/

/*
** This is the previous value used by most external callers when they
** needed to specify a default maximum line length to be used with the
** comment_print() function.
*/
#ifndef COMMENT_LEGACY_LINE_LENGTH
# define COMMENT_LEGACY_LINE_LENGTH    (78)
#endif

/*
** This is the number of spaces to print when a tab character is seen.
*/
#ifndef COMMENT_TAB_WIDTH
# define COMMENT_TAB_WIDTH             (8)
#endif

/*
** This function sets the maximum number of characters to print per line
** based on the detected terminal line width, if available; otherwise, it
** uses the legacy default terminal line width minus the amount to indent.
**
** Zero is returned to indicate any failure.  One is returned to indicate
** the successful detection of the terminal line width.  Negative one is
** returned to indicate the terminal line width is using the hard-coded
** legacy default value.
*/
static int comment_set_maxchars(
  int indent,
  int *pMaxChars
){
  struct TerminalSize ts;
  if ( !terminal_get_size(&ts) ){
    return 0;
  }

  if( ts.nColumns ){
    *pMaxChars = ts.nColumns - indent;
    return 1;
  }else{
    /*
    ** Fallback to using more-or-less the "legacy semantics" of hard-coding
    ** the maximum line length to a value reasonable for the vast majority
    ** of supported systems.
    */
    *pMaxChars = COMMENT_LEGACY_LINE_LENGTH - indent;
    return -1;
  }
}

/*
** This function checks the current line being printed against the original
** comment text.  Upon matching, it updates the provided character and line
** counts, if applicable.  The caller needs to emit a new line, if desired.
*/
static int comment_check_orig(
  const char *zOrigText, /* [in] Original comment text ONLY, may be NULL. */
  const char *zLine,     /* [in] The comment line to print. */
  int *pCharCnt,         /* [in/out] Pointer to the line character count. */
  int *pLineCnt          /* [in/out] Pointer to the total line count. */
){
  if( zOrigText && fossil_strcmp(zLine, zOrigText)==0 ){
    if( pCharCnt ) *pCharCnt = 0;
    if( pLineCnt ) (*pLineCnt)++;
    return 1;
  }
  return 0;
}

/*
** This function scans the specified comment line starting just after the
** initial index and returns the index of the next spacing character -OR-
** zero if such a character cannot be found.  For the purposes of this
** algorithm, the NUL character is treated the same as a spacing character.
*/
static int comment_next_space(
  const char *zLine, /* [in] The comment line being printed. */
  int index,         /* [in] The current character index being handled. */
  int maxChars,      /* [in] Optimization hint to abort before space found. */
  int *sumWidth      /* [out] Summated width of all characters to next space. */
){
  int cchUTF8, utf32, wcwidth = 0;
  int nextIndex = index;
  for(;;){
    char_info_utf8(&zLine[nextIndex],&cchUTF8,&utf32);
    nextIndex += cchUTF8;
    wcwidth += cli_wcwidth(utf32);
    if( zLine[nextIndex]==0 || fossil_isspace(zLine[nextIndex]) ||
        wcwidth>maxChars ){
      *sumWidth = wcwidth;
      return nextIndex;
    }
  }
  return 0; /* NOT REACHED */
}

/*
** Return information about the next (single- or multi-byte) character in the
** specified UTF-8 string: The number of UTF-8 code units (in this case: bytes)
** and the decoded UTF-32 code point. Incomplete, ill-formed and overlong
** sequences are consumed together as one invalid code point. The invalid lead
** bytes 0xC0 to 0xC1 and 0xF5 to 0xF7 are allowed to initiate (ill-formed) 2-
** and 4-byte sequences, respectively, the other invalid lead bytes 0xF8 to 0xFF
** are treated as invalid 1-byte sequences (as lone trail bytes), all resulting
** in one invalid code point. Invalid UTF-8 sequences encoding a non-scalar code
** point (UTF-16 surrogates U+D800 to U+DFFF) are allowed.
*/
void char_info_utf8(
  const char *z,
  int *pCchUTF8,
  int *pUtf32
){
  int i = 0;                              /* Counted bytes. */
  int cchUTF8 = 1;                        /* Code units consumed. */
  int maxUTF8 = 1;                        /* Expected sequence length. */
  char c = z[i++];
  if( (c&0x80)==0x00 ){                   /* 7-bit ASCII character. */
    *pCchUTF8 = 1;
    *pUtf32 = (int)z[0];
    return;
  }
  else if( (c&0xe0)==0xc0 ) maxUTF8 = 2;  /* UTF-8 lead byte 110vvvvv */
  else if( (c&0xf0)==0xe0 ) maxUTF8 = 3;  /* UTF-8 lead byte 1110vvvv */
  else if( (c&0xf8)==0xf0 ) maxUTF8 = 4;  /* UTF-8 lead byte 11110vvv */
  while( cchUTF8<maxUTF8 &&
          (z[i]&0xc0)==0x80 ){            /* UTF-8 trail byte 10vvvvvv */
    cchUTF8++;
    i++;
  }
  *pCchUTF8 = cchUTF8;
  if( cchUTF8!=maxUTF8 ||                 /* Incomplete UTF-8 sequence. */
      ( cchUTF8==1 && (c&0x80)==0x80 )){  /* Lone UTF-8 trail byte. */
    *pUtf32 = 0xfffd;                     /* U+FFFD Replacement Character */
#ifdef FOSSIL_DEBUG
    assert( *pUtf32!=0xfffd );            /* Invalid UTF-8 sequence. */
#endif
    return;
  }
  switch( cchUTF8 ){
    case 4:
      *pUtf32 =
        ( (z[0] & 0x0f)<<18 ) |
        ( (z[1] & 0x3f)<<12 ) |
        ( (z[2] & 0x3f)<< 6 ) |
        ( (z[4] & 0x3f)<< 0 ) ;
      break;
    case 3:
      *pUtf32 =
        ( (z[0] & 0x0f)<<12 ) | 
        ( (z[1] & 0x3f)<< 6 ) | 
        ( (z[2] & 0x3f)<< 0 ) ;
      break;
    case 2:
      *pUtf32 =
        ( (z[0] & 0x1f)<< 6 ) | 
        ( (z[1] & 0x3f)<< 0 ) ;
      break;
    default:
      *pUtf32 = 0xfffd;                   /* U+FFFD Replacement Character */
      break;
  }
#ifdef FOSSIL_DEBUG
  assert(
    *pUtf32>=0 && *pUtf32<=0x10ffff &&    /* Valid range U+0000 to U+10FFFF. */
    *pUtf32<0xd800 && *pUtf32>0xdfff      /* Non-scalar (UTF-16 surrogates). */
  );
#endif
}

/*
** This function is called when printing a logical comment line to calculate
** the necessary indenting.  The caller needs to emit the indenting spaces.
*/
static void comment_calc_indent(
  const char *zLine, /* [in] The comment line being printed. */
  int indent,        /* [in] Number of spaces to indent, zero for none. */
  int trimCrLf,      /* [in] Non-zero to trim leading/trailing CR/LF. */
  int trimSpace,     /* [in] Non-zero to trim leading/trailing spaces. */
  int *piIndex       /* [in/out] Pointer to first non-space character. */
){
  if( zLine && piIndex ){
    int index = *piIndex;
    if( trimCrLf ){
      while( zLine[index]=='\r' || zLine[index]=='\n' ){ index++; }
    }
    if( trimSpace ){
      while( fossil_isspace(zLine[index]) ){ index++; }
    }
    *piIndex = index;
  }
}

/*
** This function prints one logical line of a comment, stopping when it hits
** a new line -OR- runs out of space on the logical line.
*/
static void comment_print_line(
  const char *zOrigText, /* [in] Original comment text ONLY, may be NULL. */
  const char *zLine,     /* [in] The comment line to print. */
  int origIndent,        /* [in] Number of spaces to indent before the original
                         **      comment. */
  int indent,            /* [in] Number of spaces to indent, before the line
                         **      to print. */
  int lineChars,         /* [in] Maximum number of characters to print. */
  int trimCrLf,          /* [in] Non-zero to trim leading/trailing CR/LF. */
  int trimSpace,         /* [in] Non-zero to trim leading/trailing spaces. */
  int wordBreak,         /* [in] Non-zero to try breaking on word boundaries. */
  int origBreak,         /* [in] Non-zero to break before original comment. */
  int *pLineCnt,         /* [in/out] Pointer to the total line count. */
  const char **pzLine    /* [out] Pointer to the end of the logical line. */
){
  int index = 0, charCnt = 0, lineCnt = 0, maxChars, i;
  char zBuf[400]; int iBuf=0; /* Output buffer and counter. */
  if( !zLine ) return;
  if( lineChars<=0 ) return;
#if 0
  assert( indent<sizeof(zBuf)-5 );       /* See following comments to explain */
  assert( origIndent<sizeof(zBuf)-5 );   /* these limits. */
#endif
  if( indent>(int)sizeof(zBuf)-6 ){
    /* Limit initial indent to fit output buffer. */
    indent = sizeof(zBuf)-6;
  }
  comment_calc_indent(zLine, indent, trimCrLf, trimSpace, &index);
  if( indent>0 ){
    for(i=0; i<indent; i++){
      zBuf[iBuf++] = ' ';
    }
  }
  if( origIndent>(int)sizeof(zBuf)-6 ){
    /* Limit line indent to fit output buffer. */
    origIndent = sizeof(zBuf)-6;
  }
  maxChars = lineChars;
  for(;;){
    int cchUTF8, utf32;
    int useChars = 1;
    char c = zLine[index];
    /* Flush the output buffer if there's no space left for at least one more
    ** (potentially 4-byte) UTF-8 sequence, one level of indentation spaces,
    ** a new line, and a terminating NULL. */
    if( iBuf>(int)sizeof(zBuf)-origIndent-6 ){
      zBuf[iBuf]=0;
      iBuf=0;
      fossil_print("%s", zBuf);
    }
    if( c==0 ){
      break;
    }else{
      if( origBreak && index>0 ){
        const char *zCurrent = &zLine[index];
        if( comment_check_orig(zOrigText, zCurrent, &charCnt, &lineCnt) ){
          zBuf[iBuf++] = '\n';
          comment_calc_indent(zLine, origIndent, trimCrLf, trimSpace, &index);
          for( i=0; i<origIndent; i++ ){
            zBuf[iBuf++] = ' ';
          }
          maxChars = lineChars;
        }
      }
      index++;
    }
    if( c=='\n' ){
      lineCnt++;
      charCnt = 0;
      useChars = 0;
    }else if( c=='\t' ){
      int sumWidth;
      int nextIndex = comment_next_space(zLine, index, maxChars, &sumWidth);
      if( nextIndex<=0 || sumWidth>maxChars ){
        break;
      }
      charCnt++;
      useChars = COMMENT_TAB_WIDTH;
      if( maxChars<useChars ){
        zBuf[iBuf++] = ' ';
        break;
      }
    }else if( wordBreak && fossil_isspace(c) ){
      int sumWidth;
      int nextIndex = comment_next_space(zLine, index, maxChars, &sumWidth);
      if( nextIndex<=0 || sumWidth>=maxChars ){
        break;
      }
      charCnt++;
    }else{
      charCnt++;
    }
    assert( c!='\n' || charCnt==0 );
    zBuf[iBuf++] = c;
    char_info_utf8(&zLine[index-1],&cchUTF8,&utf32);
    if( cchUTF8>1 ){
      int wcwidth;
      wcwidth = cli_wcwidth(utf32);
      if( wcwidth>maxChars && lineChars>=wcwidth ){ /* rollback */
        index--;
        iBuf--;
        zBuf[iBuf] = 0;
        break;
      }
      for( ; cchUTF8>1; cchUTF8-- ){
        zBuf[iBuf++] = zLine[index++];
      }
      useChars += wcwidth - 1;
    }
    maxChars -= useChars;
    if( maxChars<=0 ) break;
    if( c=='\n' ) break;
  }
  if( charCnt>0 ){
    zBuf[iBuf++] = '\n';
    lineCnt++;
  }
  /* Flush the remaining output buffer. */
  if( iBuf>0 ){
    zBuf[iBuf]=0;
    iBuf=0;
    fossil_print("%s", zBuf);
  }
  if( pLineCnt ){
    *pLineCnt += lineCnt;
  }
  if( pzLine ){
    *pzLine = zLine + index;
  }
}

/*
** This is the legacy comment printing algorithm.  It is being retained
** for backward compatibility.
**
** Given a comment string zText, format that string for printing
** on a TTY.  Assume that the output cursors is indent spaces from
** the left margin and that a single line can contain no more than
** lineLength characters.  Indent all subsequent lines by indent.
** Given a comment string, format that string for printing on a TTY.
** Assume that the output cursors is indent spaces from the left margin
** and that a single line can contain no more than 'width' characters.
** Indent all subsequent lines by 'indent'.
**
** lineLength must be less than 400.
**
** Return the number of newlines that are output.
** Returns the number of new lines emitted.
*/
int comment_print(const char *zText, int indent, int lineLength){
  int tlen = lineLength - indent;
  int si, sk, i, k;
static int comment_print_legacy(
  const char *zText, /* The comment text to be printed. */
  int indent,        /* Number of spaces to indent each non-initial line. */
  int width          /* Maximum number of characters per line. */
){
  int maxChars = width - indent;
  int si, sk, i, k, kc;
  int doIndent = 0;
  char *zBuf;
  char zBuf[400];
  int lineCnt = 0; 
  char zBuffer[400];
  int lineCnt = 0;

  if( width<0 ){
    comment_set_maxchars(indent, &maxChars);
  }
  if( zText==0 ) zText = "(NULL)";
  if( maxChars<=0 ){
    maxChars = strlen(zText);
  }
  /* Ensure the buffer can hold the longest-possible UTF-8 sequences. */
  if( maxChars >= ((int)sizeof(zBuffer)/4-1) ){
    zBuf = fossil_malloc(maxChars*4+1);
  }else{
    zBuf = zBuffer;
  }
  for(;;){
    while( isspace(zText[0]) ){ zText++; }
    while( fossil_isspace(zText[0]) ){ zText++; }
    if( zText[0]==0 ){
      if( doIndent==0 ){
        printf("\n");
        fossil_print("\n");
        lineCnt = 1;
      }
      if( zBuf!=zBuffer) fossil_free(zBuf);
      return lineCnt;
    }
    for(sk=si=i=k=0; zText[i] && k<tlen; i++){
    for(sk=si=i=k=kc=0; zText[i] && kc<maxChars; i++){
      int cchUTF8, utf32;
      char c = zText[i];
      kc++; /* Count complete UTF-8 sequences. */
      char_info_utf8(&zText[i],&cchUTF8,&utf32);
      if( cchUTF8>1 ){
        int wcwidth;
        wcwidth = cli_wcwidth(utf32);
        if( kc+wcwidth-1>maxChars && maxChars>=wcwidth ){ /* rollback */
          kc--;
          break;
        }
        for( i--; cchUTF8>0; cchUTF8-- ){
          zBuf[k++] = zText[++i];
        }
        kc += wcwidth - 1;
      }
      if( isspace(c) ){
      else if( fossil_isspace(c) ){
        si = i;
        sk = k;
        if( k==0 || zBuf[k-1]!=' ' ){
          zBuf[k++] = ' ';
        }
      }else{
        zBuf[k] = c;
        if( c=='-' && k>0 && isalpha(zBuf[k-1]) ){
        if( c=='-' && k>0 && fossil_isalpha(zBuf[k-1]) ){
          si = i+1;
          sk = k+1;
        }
        k++;
      }
    }
    if( doIndent ){
      printf("%*s", indent, "");
      fossil_print("%*s", indent, "");
    }
    doIndent = 1;
    if( sk>0 && zText[i] ){
      zText += si;
      zBuf[sk++] =  '\n';
      zBuf[sk] = 0;
      printf("%s", zBuf);
    }else{
      zText += i;
      zBuf[k++] =  '\n';
      zBuf[k] = 0;
    }
      printf("%s", zBuf);
    }
    fossil_print("%s\n", zBuf);
    lineCnt++;
  }
}

/*
** This is the comment printing function.  The comment printing algorithm
** contained within it attempts to preserve the formatting present within
** the comment string itself while honoring line width limitations.  There
** are several flags that modify the default behavior of this function:
**
**         COMMENT_PRINT_LEGACY: Forces use of the legacy comment printing
**                               algorithm.  For backward compatibility,
**                               this is the default.
**
**      COMMENT_PRINT_TRIM_CRLF: Trims leading and trailing carriage-returns
**                               and line-feeds where they do not materially
**                               impact pre-existing formatting (i.e. at the
**                               start of the comment string -AND- right
**                               before line indentation).  This flag does
**                               not apply to the legacy comment printing
**                               algorithm.  This flag may be combined with
**                               COMMENT_PRINT_TRIM_SPACE.
**
**     COMMENT_PRINT_TRIM_SPACE: Trims leading and trailing spaces where they
**                               do not materially impact the pre-existing
**                               formatting (i.e. at the start of the comment
**                               string -AND- right before line indentation).
**                               This flag does not apply to the legacy
**                               comment printing algorithm.  This flag may
**                               be combined with COMMENT_PRINT_TRIM_CRLF.
**
**     COMMENT_PRINT_WORD_BREAK: Attempts to break lines on word boundaries
**                               while honoring the logical line length.
**                               If this flag is not specified, honoring the
**                               logical line length may result in breaking
**                               lines in the middle of words.  This flag
**                               does not apply to the legacy comment
**                               printing algorithm.
**
**     COMMENT_PRINT_ORIG_BREAK: Looks for the original comment text within
**                               the text being printed.  Upon matching, a
**                               new line will be emitted, thus preserving
**                               more of the pre-existing formatting.
**
** Given a comment string, format that string for printing on a TTY.
** Assume that the output cursors is indent spaces from the left margin
** and that a single line can contain no more than 'width' characters.
** Indent all subsequent lines by 'indent'.
**
** Returns the number of new lines emitted.
*/
int comment_print(
  const char *zText,     /* The comment text to be printed. */
  const char *zOrigText, /* Original comment text ONLY, may be NULL. */
  int indent,            /* Spaces to indent each non-initial line. */
  int width,             /* Maximum number of characters per line. */
  int flags              /* Zero or more "COMMENT_PRINT_*" flags. */
){
  int maxChars = width - indent;
  int legacy = flags & COMMENT_PRINT_LEGACY;
  int trimCrLf = flags & COMMENT_PRINT_TRIM_CRLF;
  int trimSpace = flags & COMMENT_PRINT_TRIM_SPACE;
  int wordBreak = flags & COMMENT_PRINT_WORD_BREAK;
  int origBreak = flags & COMMENT_PRINT_ORIG_BREAK;
  int lineCnt = 0;
  const char *zLine;

  if( legacy ){
    return comment_print_legacy(zText, indent, width);
  }
  if( width<0 ){
    comment_set_maxchars(indent, &maxChars);
  }
  if( zText==0 ) zText = "(NULL)";
  if( maxChars<=0 ){
    maxChars = strlen(zText);
  }
  if( trimSpace ){
    while( fossil_isspace(zText[0]) ){ zText++; }
  }
  if( zText[0]==0 ){
    fossil_print("\n");
    lineCnt++;
    return lineCnt;
  }
  zLine = zText;
  for(;;){
    comment_print_line(zOrigText, zLine, indent, zLine>zText ? indent : 0,
                       maxChars, trimCrLf, trimSpace, wordBreak, origBreak,
                       &lineCnt, &zLine);
    if( zLine==0 ) break;
    while( fossil_isspace(zLine[0]) ) zLine++;
    if( zLine[0]==0 ) break;
  }
  return lineCnt;
}

/*
** Return the "COMMENT_PRINT_*" flags specified by the following sources,
** evaluated in the following cascading order:
**
**    1. The global --comfmtflags (alias --comment-format) command-line option.
**    2. The local (per-repository) "comment-format" setting.
**    3. The global (all-repositories) "comment-format" setting.
**    4. The default value COMMENT_PRINT_DEFAULT.
*/
int get_comment_format(){
  int comFmtFlags;

  /* We must cache this result, else running the timeline can end up
  ** querying the comment-format setting from the global db once per
  ** timeline entry, which brings it to a crawl if that db is
  ** network-mounted. Discussed in:
  ** https://fossil-scm.org/forum/forumpost/9aaefe4e536e01bf */

  /* The global command-line option is present, or the value has been cached. */
  if( g.comFmtFlags!=COMMENT_PRINT_UNSET ){
    return g.comFmtFlags;
  }
  /* Load the local (per-repository) or global (all-repositories) value, and use
  ** g.comFmtFlags as a cache. */
  comFmtFlags = db_get_int("comment-format", COMMENT_PRINT_UNSET);
  if( comFmtFlags!=COMMENT_PRINT_UNSET ){
    g.comFmtFlags = comFmtFlags;
    return comFmtFlags;
  }
  /* Fallback to the default value. */
  g.comFmtFlags = COMMENT_PRINT_DEFAULT;
  return g.comFmtFlags;
}

/*
** Test the comment printing
**
** COMMAND: test-comment-format
**
** Usage: %fossil test-comment-format ?OPTIONS? PREFIX TEXT ?ORIGTEXT?
**
** Test comment formatting and printing.  Use for testing only.
**
** Options:
**   --file           The comment text is really just a file name to
**                    read it from
**   --decode         Decode the text using the same method used when
**                    handling the value of a C-card from a manifest.
**   --legacy         Use the legacy comment printing algorithm
**   --trimcrlf       Enable trimming of leading/trailing CR/LF
**   --trimspace      Enable trimming of leading/trailing spaces
**   --wordbreak      Attempt to break lines on word boundaries
**   --origbreak      Attempt to break when the original comment text
**                    is detected
**   --indent         Number of spaces to indent (default (-1) is to
**                    auto-detect).  Zero means no indent.
**   -W|--width NUM   Width of lines (default (-1) is to auto-detect).
**                    Zero means no limit.
*/
void test_comment_format(void){
  const char *zWidth;
  const char *zIndent;
  const char *zPrefix;
  char *zText;
  char *zOrigText;
  int indent;
  if( g.argc!=4 ){
    usage("PREFIX TEXT");
  int indent, width;
  int fromFile = find_option("file", 0, 0)!=0;
  int decode = find_option("decode", 0, 0)!=0;
  int flags = COMMENT_PRINT_NONE;
  if( find_option("legacy", 0, 0) ){
    flags |= COMMENT_PRINT_LEGACY;
  }
  if( find_option("trimcrlf", 0, 0) ){
    flags |= COMMENT_PRINT_TRIM_CRLF;
  }
  if( find_option("trimspace", 0, 0) ){
    flags |= COMMENT_PRINT_TRIM_SPACE;
  }
  if( find_option("wordbreak", 0, 0) ){
    flags |= COMMENT_PRINT_WORD_BREAK;
  }
  if( find_option("origbreak", 0, 0) ){
    flags |= COMMENT_PRINT_ORIG_BREAK;
  }
  zWidth = find_option("width","W",1);
  if( zWidth ){
    width = atoi(zWidth);
  }else{
    width = -1; /* automatic */
  }
  zIndent = find_option("indent",0,1);
  if( zIndent ){
    indent = atoi(zIndent);
  }else{
    indent = -1; /* automatic */
  }
  verify_all_options();
  if( g.argc!=4 && g.argc!=5 ){
    usage("?OPTIONS? PREFIX TEXT ?ORIGTEXT?");
  }
  zPrefix = g.argv[2];
  zText = g.argv[3];
  if( g.argc==5 ){
    zOrigText = g.argv[4];
  }else{
    zOrigText = 0;
  }
  if( fromFile ){
    Blob fileData;
    blob_read_from_file(&fileData, zText, ExtFILE);
    zText = mprintf("%s", blob_str(&fileData));
    blob_reset(&fileData);
    if( zOrigText ){
      blob_read_from_file(&fileData, zOrigText, ExtFILE);
      zOrigText = mprintf("%s", blob_str(&fileData));
      blob_reset(&fileData);
    }
  }
  if( decode ){
    zText = mprintf(fromFile?"%z":"%s" /*works-like:"%s"*/, zText);
    defossilize(zText);
    if( zOrigText ){
      zOrigText = mprintf(fromFile?"%z":"%s" /*works-like:"%s"*/, zOrigText);
      defossilize(zOrigText);
    }
  }
  if( indent<0 ){
  indent = strlen(g.argv[2]) + 1;
  printf("%s ", g.argv[2]);
  printf("(%d lines output)\n", comment_print(g.argv[3], indent, 79));
    indent = strlen(zPrefix);
  }
  if( zPrefix && *zPrefix ){
    fossil_print("%s", zPrefix);
  }
  fossil_print("(%d lines output)\n",
               comment_print(zText, zOrigText, indent, width, flags));
  if( zOrigText && zOrigText!=g.argv[4] ) fossil_free(zOrigText);
  if( zText && zText!=g.argv[3] ) fossil_free(zText);
}
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**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** A common header file used by all modules.
*/

/* The following macros are necessary for large-file support under
** some linux distributions, and possibly other unixes as well.
*/
#define _LARGE_FILE       1
#ifndef _FILE_OFFSET_BITS
#  define _FILE_OFFSET_BITS 64
#endif
#define _LARGEFILE_SOURCE 1

/* Needed for various definitions... */
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif

/* Make sure that in Win32 MinGW builds, _USE_32BIT_TIME_T is always defined. */
#if defined(_WIN32) && !defined(_WIN64) && !defined(_MSC_VER) && !defined(_USE_32BIT_TIME_T)
#  define _USE_32BIT_TIME_T
#endif

#ifdef HAVE_AUTOCONFIG_H
#include "autoconfig.h"
#endif

/* Enable the hardened SHA1 implemenation by default */
#ifndef FOSSIL_HARDENED_SHA1
# define FOSSIL_HARDENED_SHA1 1
#endif

#ifndef _RC_COMPILE_

/*
** System header files used by all modules
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
/* #include <ctype.h> // do not use - causes problems */
#include <string.h>
#include <stdarg.h>
#include <assert.h>
#ifdef __MINGW32__
# include <windows.h>

#endif

#if defined( __MINGW32__) ||  defined(__DMC__) || defined(_MSC_VER) || defined(__POCC__)
#  if defined(__DMC__)  || defined(_MSC_VER) || defined(__POCC__)
     typedef int socklen_t;
#  endif
#  ifndef _WIN32
#    define _WIN32
#  endif
# include <io.h>
# include <fcntl.h>
# undef popen
# define popen _popen
# undef pclose
# define pclose _pclose
#else
# include <sys/types.h>
# include <signal.h>
# include <pwd.h>
#endif

/*
** Utility macro to wrap an argument with double quotes.
*/
#if !defined(COMPILER_STRINGIFY)
#  define COMPILER_STRINGIFY(x)  COMPILER_STRINGIFY1(x)
#  define COMPILER_STRINGIFY1(x) #x
#endif

/*
** Define the compiler variant, used to compile the project
*/
#if !defined(COMPILER_NAME)
#  if defined(__DMC__)
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "dmc-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "dmc"
#    endif
#  elif defined(__POCC__)
#    if defined(_M_X64)
#      if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#        define COMPILER_NAME "pellesc64-" COMPILER_VERSION
#      else
#        define COMPILER_NAME "pellesc64"
#      endif
#    else
#      if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#        define COMPILER_NAME "pellesc32-" COMPILER_VERSION
#      else
#        define COMPILER_NAME "pellesc32"
#      endif
#    endif
#  elif defined(__clang__)
#    if !defined(COMPILER_VERSION)
#      if defined(__clang_version__)
#        define COMPILER_VERSION __clang_version__
#      endif
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "clang-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "clang"
#    endif
#  elif defined(_MSC_VER)
#    if !defined(COMPILER_VERSION)
#      define COMPILER_VERSION COMPILER_STRINGIFY(_MSC_VER)
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "msc-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "msc"
#    endif
#  elif defined(__MINGW32__)
#    if !defined(COMPILER_VERSION)
#      if defined(__MINGW_VERSION)
#        if defined(__GNUC__)
#          if defined(__VERSION__)
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW_VERSION) "-gcc-" __VERSION__
#          else
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW_VERSION) "-gcc"
#          endif
#        else
#          define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW_VERSION)
#        endif
#      elif defined(__MINGW32_VERSION)
#        if defined(__GNUC__)
#          if defined(__VERSION__)
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW32_VERSION) "-gcc-" __VERSION__
#          else
#            define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW32_VERSION) "-gcc"
#          endif
#        else
#          define COMPILER_VERSION COMPILER_STRINGIFY(__MINGW32_VERSION)
#        endif
#      endif
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "mingw32-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "mingw32"
#    endif
#  elif defined(__GNUC__)
#    if !defined(COMPILER_VERSION)
#      if defined(__VERSION__)
#        define COMPILER_VERSION __VERSION__
#      endif
#    endif
#    if defined(COMPILER_VERSION) && !defined(NO_COMPILER_VERSION)
#      define COMPILER_NAME "gcc-" COMPILER_VERSION
#    else
#      define COMPILER_NAME "gcc"
#    endif
#  elif defined(_WIN32)
#    define COMPILER_NAME "win32"
#  else
#    define COMPILER_NAME "unknown"
#  endif
#endif

#if !defined(_RC_COMPILE_) && !defined(SQLITE_AMALGAMATION)

/*
** MSVC does not include the "stdint.h" header file until 2010.
*/
#if defined(_MSC_VER) && _MSC_VER<1600
   typedef __int8 int8_t;
   typedef unsigned __int8 uint8_t;
   typedef __int32 int32_t;
   typedef unsigned __int32 uint32_t;
   typedef __int64 int64_t;
   typedef unsigned __int64 uint64_t;
#else
#  include <stdint.h>
#endif

#if USE_SEE && !defined(SQLITE_HAS_CODEC)
#  define SQLITE_HAS_CODEC
#endif
#include "sqlite3.h"

/*
** On Solaris, getpass() will only return up to 8 characters. getpassphrase() returns up to 257.
*/
#if HAVE_GETPASSPHRASE
  #define getpass getpassphrase
#endif

/*
** Typedef for a 64-bit integer
*/
typedef sqlite_int64 i64;
typedef sqlite_uint64 u64;
typedef sqlite3_int64 i64;
typedef sqlite3_uint64 u64;

/*
** Unsigned character type
** 8-bit types
*/
typedef unsigned char u8;

typedef signed char i8;
/*
** Standard colors.  These colors can also be changed using a stylesheet.
*/

/* A blue border and background.  Used for the title bar and for dates
** in a timeline.
*/
#define BORDER1       "#a0b5f4"      /* Stylesheet class: border1 */
#define BG1           "#d0d9f4"      /* Stylesheet class: bkgnd1 */

/* A red border and background.  Use for releases in the timeline.
*/
#define BORDER2       "#ec9898"      /* Stylesheet class: border2 */
#define BG2           "#f7c0c0"      /* Stylesheet class: bkgnd2 */

/* A gray background.  Used for column headers in the Wiki Table of Contents
** and to highlight ticket properties.
*/
#define BG3           "#d0d0d0"      /* Stylesheet class: bkgnd3 */

/* A light-gray background.  Used for title bar, menus, and rlog alternation
*/
#define BG4           "#f0f0f0"      /* Stylesheet class: bkgnd4 */

/* A deeper gray background.  Used for branches
*/
#define BG5           "#dddddd"      /* Stylesheet class: bkgnd5 */

/* Default HTML page header */
#define HEADER "<html>\n" \
               "<head>\n" \
               "<link rel=\"alternate\" type=\"application/rss+xml\"\n" \
               "   title=\"%N Timeline Feed\" href=\"%B/timeline.rss\">\n" \
               "<title>%N: %T</title>\n</head>\n" \
               "<body bgcolor=\"white\">"

/* Default HTML page footer */
#define FOOTER "<div id=\"footer\"><small><small>\n" \
               "<a href=\"about\">Fossil version %V</a>\n" \
               "</small></small></div>\n" \
               "</body></html>\n"

/* In the timeline, check-in messages are truncated at the first space
** that is more than MX_CKIN_MSG from the beginning, or at the first
** paragraph break that is more than MN_CKIN_MSG from the beginning.
*/
#define MN_CKIN_MSG   100
#define MX_CKIN_MSG   300

/*
/* Unset the following to disable internationalization code. */
#ifndef FOSSIL_I18N
# define FOSSIL_I18N 1
** The following macros are used to cast pointers to integers and
** integers to pointers.  The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
** to generate appropriate macros for a wide range of compilers.
**
** The correct "ANSI" way to do this is to use the intptr_t type.
** Unfortunately, that typedef is not available on all compilers, or
** if it is available, it requires an #include of specific headers
** that vary from one machine to the next.
*/
#if defined(__PTRDIFF_TYPE__)  /* This case should work for GCC */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(__PTRDIFF_TYPE__)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(__PTRDIFF_TYPE__)(X))
#elif !defined(__GNUC__)       /* Works for compilers other than LLVM */
# define FOSSIL_INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define FOSSIL_PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))
#else                          /* Generates a warning - but it always works */
# define FOSSIL_INT_TO_PTR(X)  ((void*)(X))
# define FOSSIL_PTR_TO_INT(X)  ((int)(X))
#endif

/*
** A marker for functions that never return.
*/
#if FOSSIL_I18N
# include <locale.h>
# include <langinfo.h>
#if defined(__GNUC__) || defined(__clang__)
# define NORETURN __attribute__((__noreturn__))
# define NULL_SENTINEL __attribute__((sentinel))
#elif defined(_MSC_VER) && (_MSC_VER >= 1310)
# define NORETURN __declspec(noreturn)
# define NULL_SENTINEL
#else
# define NORETURN
# define NULL_SENTINEL
#endif
#ifndef CODESET
# undef FOSSIL_I18N
# define FOSSIL_I18N 0

/*
** Number of elements in an array
*/
#define count(X)      (int)(sizeof(X)/sizeof(X[0]))
#define ArraySize(X)  (int)(sizeof(X)/sizeof(X[0]))

/*
** The pledge() interface is currently only available on OpenBSD 5.9
** and later.  Make calls to fossil_pledge() no-ops on all platforms
** that omit the HAVE_PLEDGE configuration parameter.
*/
#if !defined(HAVE_PLEDGE)
# define fossil_pledge(A)
#endif


#endif /* _RC_COMPILE_ */
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/*
** Copyright (c) 2008 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage repository configurations.
**
** By "responsitory configure" we mean the local state of a repository
** By "repository configure" we mean the local state of a repository
** distinct from the versioned files.
*/
#include "config.h"
#include "configure.h"
#include <assert.h>

#if INTERFACE
/*
** Configuration transfers occur in groups.  These are the allowed
** groupings:
*/
#define CONFIGSET_CSS       0x000001     /* Style sheet only */
#define CONFIGSET_SKIN   0x000001     /* WWW interface appearance */
#define CONFIGSET_TKT    0x000002     /* Ticket configuration */
#define CONFIGSET_PROJ   0x000004     /* Project name */
#define CONFIGSET_SHUN   0x000008     /* Shun settings */
#define CONFIGSET_USER   0x000010     /* The USER table */
#define CONFIGSET_ADDR   0x000020     /* The CONCEALED table */
#define CONFIGSET_SKIN      0x000002     /* WWW interface appearance */
#define CONFIGSET_TKT       0x000004     /* Ticket configuration */
#define CONFIGSET_PROJ      0x000008     /* Project name */
#define CONFIGSET_SHUN      0x000010     /* Shun settings */
#define CONFIGSET_USER      0x000020     /* The USER table */
#define CONFIGSET_ADDR      0x000040     /* The CONCEALED table */
#define CONFIGSET_XFER      0x000080     /* Transfer configuration */
#define CONFIGSET_ALIAS     0x000100     /* URL Aliases */
#define CONFIGSET_SCRIBER   0x000200     /* Email subscribers */
#define CONFIGSET_IWIKI     0x000400     /* Interwiki codes */
#define CONFIGSET_ALL       0x0007ff     /* Everything */

#define CONFIGSET_OVERWRITE 0x100000     /* Causes overwrite instead of merge */
#define CONFIGSET_ALL    0xffffff     /* Everything */

/*
** This mask is used for the common TH1 configuration settings (i.e. those
** that are not specific to one particular subsystem, such as the transfer
** subsystem).
*/
#define CONFIGSET_TH1       (CONFIGSET_SKIN|CONFIGSET_TKT|CONFIGSET_XFER)

#endif /* INTERFACE */

/*
** Names of the configuration sets
*/
static struct {
  const char *zName;   /* Name of the configuration set */
  int groupMask;       /* Mask for that configuration set */
  const char *zHelp;   /* What it does */
} aGroupName[] = {
  { "email",        CONFIGSET_ADDR,  "Concealed email addresses in tickets" },
  { "project",      CONFIGSET_PROJ,  "Project name and description"         },
  { "skin",         CONFIGSET_SKIN,  "Web interface apparance settings"     },
  { "shun",         CONFIGSET_SHUN,  "List of shunned artifacts"            },
  { "ticket",       CONFIGSET_TKT,   "Ticket setup",                        },
  { "user",         CONFIGSET_USER,  "Users and privilege settings"         },
  { "all",          CONFIGSET_ALL,   "All of the above"                     },
  { "/email",       CONFIGSET_ADDR,    "Concealed email addresses in tickets" },
  { "/project",     CONFIGSET_PROJ,    "Project name and description"         },
  { "/skin",        CONFIGSET_SKIN | CONFIGSET_CSS,
                                       "Web interface appearance settings"    },
  { "/css",         CONFIGSET_CSS,     "Style sheet"                          },
  { "/shun",        CONFIGSET_SHUN,    "List of shunned artifacts"            },
  { "/ticket",      CONFIGSET_TKT,     "Ticket setup",                        },
  { "/user",        CONFIGSET_USER,    "Users and privilege settings"         },
  { "/xfer",        CONFIGSET_XFER,    "Transfer setup",                      },
  { "/alias",       CONFIGSET_ALIAS,   "URL Aliases",                         },
  { "/subscriber",  CONFIGSET_SCRIBER, "Email notification subscriber list"   },
  { "/interwiki",   CONFIGSET_IWIKI,   "Inter-wiki link prefixes"             },
  { "/all",         CONFIGSET_ALL,     "All of the above"                     },
};


/*
** The following is a list of settings that we are willing to
** transfer.  
** transfer.
**
** Setting names that begin with an alphabetic characters refer to
** single entries in the CONFIG table.  Setting names that begin with
** "@" are for special processing.
*/
static struct {
  const char *zName;   /* Name of the configuration parameter */
  int groupMask;       /* Which config groups is it part of */
} aConfig[] = {
  { "css",                    CONFIGSET_SKIN },
  { "css",                    CONFIGSET_CSS  },
  { "header",                 CONFIGSET_SKIN },
  { "mainmenu",               CONFIGSET_SKIN },
  { "footer",                 CONFIGSET_SKIN },
  { "details",                CONFIGSET_SKIN },
  { "js",                     CONFIGSET_SKIN },
  { "default-skin",           CONFIGSET_SKIN },
  { "logo-mimetype",          CONFIGSET_SKIN },
  { "logo-image",             CONFIGSET_SKIN },
  { "background-mimetype",    CONFIGSET_SKIN },
  { "background-image",       CONFIGSET_SKIN },
  { "icon-mimetype",          CONFIGSET_SKIN },
  { "icon-image",             CONFIGSET_SKIN },
  { "timeline-block-markup",  CONFIGSET_SKIN },
  { "timeline-date-format",   CONFIGSET_SKIN },
  { "timeline-default-style", CONFIGSET_SKIN },
  { "timeline-dwelltime",     CONFIGSET_SKIN },
  { "timeline-closetime",     CONFIGSET_SKIN },
  { "timeline-hard-newlines", CONFIGSET_SKIN },
  { "timeline-max-comment",   CONFIGSET_SKIN },
  { "timeline-plaintext",     CONFIGSET_SKIN },
  { "timeline-truncate-at-blank", CONFIGSET_SKIN },
  { "timeline-tslink-info",   CONFIGSET_SKIN },
  { "timeline-utc",           CONFIGSET_SKIN },
  { "adunit",                 CONFIGSET_SKIN },
  { "adunit-omit-if-admin",   CONFIGSET_SKIN },
  { "adunit-omit-if-user",    CONFIGSET_SKIN },
  { "default-csp",            CONFIGSET_SKIN },
  { "sitemap-extra",          CONFIGSET_SKIN },
  { "safe-html",              CONFIGSET_SKIN },

#ifdef FOSSIL_ENABLE_TH1_HOOKS
  { "th1-hooks",              CONFIGSET_TH1 },
#endif
  { "th1-uri-regexp",         CONFIGSET_TH1 },

  { "project-name",           CONFIGSET_PROJ },
  { "short-project-name",     CONFIGSET_PROJ },
  { "project-description",    CONFIGSET_PROJ },
  { "index-page",             CONFIGSET_SKIN },
  { "timeline-block-markup",  CONFIGSET_SKIN },
  { "timeline-max-comment",   CONFIGSET_SKIN },
  { "index-page",             CONFIGSET_PROJ },
  { "manifest",               CONFIGSET_PROJ },
  { "binary-glob",            CONFIGSET_PROJ },
  { "clean-glob",             CONFIGSET_PROJ },
  { "ignore-glob",            CONFIGSET_PROJ },
  { "keep-glob",              CONFIGSET_PROJ },
  { "crlf-glob",              CONFIGSET_PROJ },
  { "crnl-glob",              CONFIGSET_PROJ },
  { "encoding-glob",          CONFIGSET_PROJ },
  { "empty-dirs",             CONFIGSET_PROJ },
  { "dotfiles",               CONFIGSET_PROJ },
  { "parent-project-code",    CONFIGSET_PROJ },
  { "parent-project-name",    CONFIGSET_PROJ },
  { "hash-policy",            CONFIGSET_PROJ },
  { "comment-format",         CONFIGSET_PROJ },
  { "mimetypes",              CONFIGSET_PROJ },
  { "forbid-delta-manifests", CONFIGSET_PROJ },
  { "mv-rm-files",            CONFIGSET_PROJ },
  { "ticket-table",           CONFIGSET_TKT  },
  { "ticket-common",          CONFIGSET_TKT  },
  { "ticket-change",          CONFIGSET_TKT  },
  { "ticket-newpage",         CONFIGSET_TKT  },
  { "ticket-viewpage",        CONFIGSET_TKT  },
  { "ticket-editpage",        CONFIGSET_TKT  },
  { "ticket-reportlist",      CONFIGSET_TKT  },
  { "ticket-report-template", CONFIGSET_TKT  },
  { "ticket-key-template",    CONFIGSET_TKT  },
  { "ticket-title-expr",      CONFIGSET_TKT  },
  { "ticket-closed-expr",     CONFIGSET_TKT  },
  { "@reportfmt",             CONFIGSET_TKT  },

  { "@user",                  CONFIGSET_USER },
  { "user-color-map",         CONFIGSET_USER },

  { "@concealed",             CONFIGSET_ADDR },

  { "@shun",                  CONFIGSET_SHUN },

  { "@alias",                 CONFIGSET_ALIAS },

  { "@subscriber",            CONFIGSET_SCRIBER },

  { "@interwiki",             CONFIGSET_IWIKI },

  { "xfer-common-script",     CONFIGSET_XFER },
  { "xfer-push-script",       CONFIGSET_XFER },
  { "xfer-commit-script",     CONFIGSET_XFER },
  { "xfer-ticket-script",     CONFIGSET_XFER },

};
static int iConfig = 0;

/*
** Return name of first configuration property matching the given mask.
*/
const char *configure_first_name(int iMask){
  iConfig = 0;
  return configure_next_name(iMask);
}
const char *configure_next_name(int iMask){
  if( iConfig==0 && (iMask & CONFIGSET_ALL)==CONFIGSET_ALL ){
    iConfig = count(aGroupName);
    return "/all";
  }
  while( iConfig<count(aConfig) ){
    if( aConfig[iConfig].groupMask & iMask ){
      return aConfig[iConfig++].zName;
  while( iConfig<count(aGroupName)-1 ){
    if( aGroupName[iConfig].groupMask & iMask ){
      return aGroupName[iConfig++].zName;
    }else{
      iConfig++;
    }
  }
  return 0;
}

/*
** Return a pointer to a string that contains the RHS of an IN operator
** that will select CONFIG table names that are part of the configuration
** that matches iMatch.
*/
const char *configure_inop_rhs(int iMask){
  Blob x;
  int i;
  const char *zSep = "";

  blob_zero(&x);
  blob_append_sql(&x, "(");
  for(i=0; i<count(aConfig); i++){
    if( (aConfig[i].groupMask & iMask)==0 ) continue;
    if( aConfig[i].zName[0]=='@' ) continue;
    blob_append_sql(&x, "%s'%q'", zSep/*safe-for-%s*/, aConfig[i].zName);
    zSep = ",";
  }
  blob_append_sql(&x, ")");
  return blob_sql_text(&x);
}

/*
** Return the mask for the named configuration parameter if it can be
** safely exported.  Return 0 if the parameter is not safe to export.
**
** "Safe" in the previous paragraph means the permission is granted to
** export the property.  In other words, the requesting side has presented
** login credentials and has sufficient capabilities to access the requested
** information.
**
** Settings which are specifically flagged as sensitive will (as of
** 2024-10-15) cause this function to return 0, regardless of user
** permissions. As an example, if the th1-setup setting were not
** sensitive then a malicious repo admin could set that to include
** arbitrary TCL code and affect users who configure fossil with the
** --with-tcl flag.
*/
int configure_is_exportable(const char *zName){
  int i;
  int n = strlen(zName);
  Setting *pSet;
  if( n>2 && zName[0]=='\'' && zName[n-1]=='\'' ){
    char * zCpy;
    zName++;
    n -= 2;
    zCpy = fossil_strndup(zName, (ssize_t)n);
    pSet = db_find_setting(zCpy, 0);
    fossil_free(zCpy);
  }else{
    pSet = db_find_setting(zName, 0);
  }
  if( pSet && pSet->sensitive ){
    /* https://fossil-scm.org/forum/forumpost/6179500deadf6ec7 */
    return 0;
  }
  for(i=0; i<count(aConfig); i++){
    if( strcmp(zName, aConfig[i].zName)==0 ){
    if( strncmp(zName, aConfig[i].zName, n)==0 && aConfig[i].zName[n]==0 ){
      int m = aConfig[i].groupMask;
      if( !g.okAdmin ){
        m &= ~CONFIGSET_USER;
      if( !g.perm.Admin ){
        m &= ~(CONFIGSET_USER|CONFIGSET_SCRIBER);
      }
      if( !g.okRdAddr ){
      if( !g.perm.RdAddr ){
        m &= ~CONFIGSET_ADDR;
      }
      return m;
    }
  }
  if( strncmp(zName, "walias:/", 8)==0 ){
    return CONFIGSET_ALIAS;
  }
  if( strncmp(zName, "interwiki:", 10)==0 ){
    return CONFIGSET_IWIKI;
  }
  return 0;
}

/*
** A mask of all configuration tables that have been reset already.
*/
static int configHasBeenReset = 0;

/*
** Mask of modified configuration sets
*/
static int rebuildMask = 0;

/*
** Rebuild auxiliary tables as required by configuration changes.
*/
void configure_rebuild(void){
  if( rebuildMask & CONFIGSET_TKT ){
    ticket_rebuild();
  }
  rebuildMask = 0;
}

/*
** Return true if z[] is not a "safe" SQL token.  A safe token is one of:
**
**   *   A string literal
**   *   A blob literal
**   *   An integer literal  (no floating point)
**   *   NULL
*/
static int safeSql(const char *z){
  int i;
  if( z==0 || z[0]==0 ) return 0;
  if( (z[0]=='x' || z[0]=='X') && z[1]=='\'' ) z++;
  if( z[0]=='\'' ){
    for(i=1; z[i]; i++){
      if( z[i]=='\'' ){
        i++;
        if( z[i]=='\'' ){ continue; }
        return z[i]==0;
      }
    }
    return 0;
  }else{
    char c;
    for(i=0; (c = z[i])!=0; i++){
      if( !fossil_isalnum(c) ) return 0;
    }
  }
  return 1;
}

/*
** Return true if z[] consists of nothing but digits
*/
static int safeInt(const char *z){
  int i;
  if( z==0 || z[0]==0 ) return 0;
  for(i=0; fossil_isdigit(z[i]); i++){}
  return z[i]==0;
}

/*
** Process a single "config" card received from the other side of a
** sync session.
**
** Mask consists of one or more CONFIGSET_* values ORed together, to
** designate what types of configuration we are allowed to receive.
**
** NEW FORMAT:
**
** zName is one of the special configuration names that refers to an entire
** table rather than a single entry in CONFIG.  Special names are "@reportfmt"
** and "@shun" and "@user".  This routine writes SQL text into pOut that when
** evaluated will populate the corresponding table with data.
** zName is one of:
**
**     "/config", "/user",  "/shun", "/reportfmt", "/concealed",
**     "/subscriber",
**
** zName indicates the table that holds the configuration information being
** transferred.  pContent is a string that consist of alternating Fossil
** and SQL tokens.  The First token is a timestamp in seconds since 1970.
** The second token is a primary key for the table identified by zName.  If
** The entry with the corresponding primary key exists and has a more recent
** mtime, then nothing happens.  If the entry does not exist or if it has
** an older mtime, then the content described by subsequent token pairs is
** inserted.  The first element of each token pair is a column name and
** the second is its value.
**
** In overview, we have:
**
**    NAME        CONTENT
**    -------     -----------------------------------------------------------
**    /config     $MTIME $NAME value $VALUE
**    /user       $MTIME $LOGIN pw $VALUE cap $VALUE info $VALUE photo $VALUE
**    /shun       $MTIME $UUID scom $VALUE
**    /reportfmt  $MTIME $TITLE owner $VALUE cols $VALUE sqlcode $VALUE jx $JSON
**    /concealed  $MTIME $HASH content $VALUE
**    /subscriber $SMTIME $SEMAIL suname $V ...
*/
void configure_receive(const char *zName, Blob *pContent, int groupMask){
  int checkMask;   /* Masks for which we must first check existance of tables */

  checkMask = CONFIGSET_SCRIBER;
  if( zName[0]=='/' ){
    /* The new format */
    char *azToken[24];
    int nToken = 0;
    int ii, jj;
    int thisMask;
    Blob name, value, sql;
    static const struct receiveType {
      const char *zName;         /* Configuration key for this table */
      const char *zPrimKey;      /* Primary key column */
      int nField;                /* Number of data fields */
      const char *azField[6];    /* Names of the data fields */
    } aType[] = {
      { "/config",    "name",  1, { "value", 0,0,0,0,0 }              },
      { "@user",      "login", 5, { "pw","cap","info","photo","jx",0} },
      { "@shun",      "uuid",  1, { "scom", 0,0,0,0,0}                },
      { "@reportfmt", "title", 4, { "owner","cols","sqlcode","jx",0,0}},
      { "@concealed", "hash",  1, { "content", 0,0,0,0,0 }            },
      { "@subscriber","semail",6,
          { "suname","sdigest","sdonotcall","ssub","sctime","smip"}   },
    };

    /* Locate the receiveType in aType[ii] */
    for(ii=0; ii<count(aType); ii++){
      if( fossil_strcmp(&aType[ii].zName[1],&zName[1])==0 ) break;
    }
    if( ii>=count(aType) ) return;

    while( blob_token(pContent, &name) && blob_sqltoken(pContent, &value) ){
      char *z = blob_terminate(&name);
      if( !safeSql(z) ) return;
      if( nToken>0 ){
        for(jj=0; jj<aType[ii].nField; jj++){
          if( fossil_strcmp(aType[ii].azField[jj], z)==0 ) break;
        }
        if( jj>=aType[ii].nField ) continue;
      }else{
        if( !safeInt(z) ) return;
      }
      azToken[nToken++] = z;
      azToken[nToken++] = z = blob_terminate(&value);
      if( !safeSql(z) ) return;
      if( nToken>=count(azToken)-1 ) break;
    }
    if( nToken<2 ) return;
    if( aType[ii].zName[0]=='/' ){
      thisMask = configure_is_exportable(azToken[1]);
      if( 0==thisMask ){
        fossil_warning("Skipping non-exportable setting: %s = %s",
                       azToken[1], nToken>3 ? azToken[3] : "?");
        /* Will be skipped below */
      }
    }else{
      thisMask = configure_is_exportable(aType[ii].zName);
    }
    if( (thisMask & groupMask)==0 ) return;
    if( (thisMask & checkMask)!=0 ){
      if( (thisMask & CONFIGSET_SCRIBER)!=0 ){
        alert_schema(1);
      }
      checkMask &= ~thisMask;
    }

    blob_zero(&sql);
    if( groupMask & CONFIGSET_OVERWRITE ){
      if( (thisMask & configHasBeenReset)==0 && aType[ii].zName[0]!='/' ){
        db_multi_exec("DELETE FROM \"%w\"", &aType[ii].zName[1]);
        configHasBeenReset |= thisMask;
      }
      blob_append_sql(&sql, "REPLACE INTO ");
    }else{
      blob_append_sql(&sql, "INSERT OR IGNORE INTO ");
    }
    blob_append_sql(&sql, "\"%w\"(\"%w\",mtime",
         &zName[1], aType[ii].zPrimKey);
    if( fossil_stricmp(zName,"/subscriber")==0 ) alert_schema(0);
    for(jj=2; jj<nToken; jj+=2){
       blob_append_sql(&sql, ",\"%w\"", azToken[jj]);
    }
    blob_append_sql(&sql,") VALUES(%s,%s",
       azToken[1] /*safe-for-%s*/, azToken[0]/*safe-for-%s*/);
    for(jj=2; jj<nToken; jj+=2){
       blob_append_sql(&sql, ",%s", azToken[jj+1] /*safe-for-%s*/);
    }
    db_protect_only(PROTECT_SENSITIVE);

    /* Make sure tables have the "jx" column */
    if( strcmp(&zName[1],"user")==0 ){
      user_update_user_table();
    }else if( strcmp(&zName[1],"reportfmt")==0 ){
      report_update_reportfmt_table();
    }

    db_multi_exec("%s)", blob_sql_text(&sql));

    if( db_changes()==0 ){
      blob_reset(&sql);
      blob_append_sql(&sql, "UPDATE \"%w\" SET mtime=%s",
                      &zName[1], azToken[0]/*safe-for-%s*/);
      for(jj=2; jj<nToken; jj+=2){
        blob_append_sql(&sql, ", \"%w\"=%s",
                        azToken[jj], azToken[jj+1]/*safe-for-%s*/);
      }
      blob_append_sql(&sql, " WHERE \"%w\"=%s AND mtime<%s",
                   aType[ii].zPrimKey, azToken[1]/*safe-for-%s*/,
                   azToken[0]/*safe-for-%s*/);
      db_multi_exec("%s", blob_sql_text(&sql));
    }
    db_protect_pop();
    blob_reset(&sql);
    rebuildMask |= thisMask;
  }
}

/*
** Process a file full of "config" cards.
*/
void configure_receive_all(Blob *pIn, int groupMask){
  Blob line;
  int nToken;
  int size;
  Blob aToken[4];

  configHasBeenReset = 0;
  while( blob_line(pIn, &line) ){
    if( blob_buffer(&line)[0]=='#' ) continue;
    nToken = blob_tokenize(&line, aToken, count(aToken));
    if( blob_eq(&aToken[0],"config")
     && nToken==3
     && blob_is_int(&aToken[2], &size)
    ){
      const char *zName = blob_str(&aToken[1]);
      Blob content;
      blob_zero(&content);
      blob_extract(pIn, size, &content);
      g.perm.Admin = g.perm.RdAddr = 1;
      configure_receive(zName, &content, groupMask);
      blob_reset(&content);
      blob_seek(pIn, 1, BLOB_SEEK_CUR);
    }
  }
}


/*
** Send "config" cards using the new format for all elements of a group
** that have recently changed.
**
** Output goes into pOut.  The groupMask identifies the group(s) to be sent.
** Send only entries whose timestamp is later than or equal to iStart.
**
** Return the number of cards sent.
*/
void configure_render_special_name(const char *zName, Blob *pOut){
int configure_send_group(
  Blob *pOut,              /* Write output here */
  int groupMask,           /* Mask of groups to be send */
  sqlite3_int64 iStart     /* Only write values changed since this time */
){
  Stmt q;
  Blob rec;
  int ii;
  int nCard = 0;
  if( strcmp(zName, "@shun")==0 ){
    db_prepare(&q, "SELECT uuid FROM shun");

  blob_zero(&rec);
  if( groupMask & CONFIGSET_SHUN ){
    db_prepare(&q, "SELECT mtime, quote(uuid), quote(scom) FROM shun"
                   " WHERE mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s scom %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
      blob_appendf(pOut, "INSERT OR IGNORE INTO shun VALUES('%s');\n", 
        db_column_text(&q, 0)
      blob_appendf(pOut, "config /shun %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_USER ){
    if( db_table_has_column("repository","user","jx") ){
      db_prepare(&q, "SELECT mtime, quote(login), quote(pw), quote(cap),"
                     "       quote(info), quote(photo), quote(jx) FROM user"
                     " WHERE mtime>=%lld", iStart);
    }else{
      db_prepare(&q, "SELECT mtime, quote(login), quote(pw), quote(cap),"
                     "       quote(info), quote(photo), 'NULL' FROM user"
                     " WHERE mtime>=%lld", iStart);
    }
    while( db_step(&q)==SQLITE_ROW ){
      const char *z;
      blob_appendf(&rec,"%s %s", db_column_text(&q,0), db_column_text(&q,1));
      z = db_column_text(&q,2);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," pw %s", z);
      z = db_column_text(&q,3);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," cap %s", z);
      z = db_column_text(&q,4);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," info %s", z);
      z = db_column_text(&q,5);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," photo %s", z);
      z = db_column_text(&q,6);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," jx %s", z);
      blob_appendf(pOut, "config /user %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_TKT ){
    if( db_table_has_column("repository","reportfmt","jx") ){
      db_prepare(&q, "SELECT mtime, quote(title), quote(owner), quote(cols),"
                     "       quote(sqlcode), quote(jx) FROM reportfmt"
                     " WHERE mtime>=%lld", iStart);
    }else{
      db_prepare(&q, "SELECT mtime, quote(title), quote(owner), quote(cols),"
                     "       quote(sqlcode), 'NULL' FROM reportfmt"
                     " WHERE mtime>=%lld", iStart);
    }
    while( db_step(&q)==SQLITE_ROW ){
      const char *z;
      blob_appendf(&rec,"%s %s", db_column_text(&q,0), db_column_text(&q,1));
      z = db_column_text(&q,2);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," owner %s", z);
      z = db_column_text(&q,3);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," cols %s", z);
      z = db_column_text(&q,4);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," sqlcode %s", z);
      z = db_column_text(&q,5);
      if( strcmp(z,"NULL")!=0 ) blob_appendf(&rec," jx %s", z);
      blob_appendf(pOut, "config /reportfmt %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_ADDR ){
    db_prepare(&q, "SELECT mtime, quote(hash), quote(content) FROM concealed"
                   " WHERE mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s content %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
      blob_appendf(pOut, "config /concealed %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  if( groupMask & CONFIGSET_ALIAS ){
    db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
                   " WHERE name GLOB 'walias:/*' AND mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,"%s %s value %s",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
      blob_appendf(pOut, "config /config %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }
  }else if( strcmp(zName, "@reportfmt")==0 ){
    db_prepare(&q, "SELECT title, cols, sqlcode FROM reportfmt");
  if( groupMask & CONFIGSET_IWIKI ){
    db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
                   " WHERE name GLOB 'interwiki:*' AND mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT INTO _xfer_reportfmt(title,cols,sqlcode)"
      blob_appendf(&rec,"%s %s value %s",
                         " VALUES(%Q,%Q,%Q);\n", 
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2)
      );
      blob_appendf(pOut, "config /config %d\n%s\n",
                   blob_size(&rec), blob_str(&rec));
      nCard++;
      blob_reset(&rec);
    }
    db_finalize(&q);
  }else if( strcmp(zName, "@user")==0 ){
    db_prepare(&q, 
        "SELECT login, CASE WHEN length(pw)==40 THEN pw END,"
        "       cap, info, quote(photo) FROM user");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pOut, "INSERT INTO _xfer_user(login,pw,cap,info,photo)"
                         " VALUES(%Q,%Q,%Q,%Q,%s);\n",
        db_column_text(&q, 0),
        db_column_text(&q, 1),
        db_column_text(&q, 2),
        db_column_text(&q, 3),
        db_column_text(&q, 4)
      );
    }
  }
    db_finalize(&q);
  }else if( strcmp(zName, "@concealed")==0 ){
  if( (groupMask & CONFIGSET_SCRIBER)!=0
    db_prepare(&q, "SELECT hash, content FROM concealed");
    while( db_step(&q)==SQLITE_ROW ){
   && db_table_exists("repository","subscriber")
      blob_appendf(pOut, "INSERT OR IGNORE INTO concealed(hash,content)"
                         " VALUES(%Q,%Q);\n",
        db_column_text(&q, 0),
        db_column_text(&q, 1)
      );
  ){
    }
    db_finalize(&q);
    db_prepare(&q, "SELECT mtime, quote(semail),"
  }
}

                   " quote(suname), quote(sdigest),"
/*
** Two SQL functions:
                   " quote(sdonotcall), quote(ssub),"
                   " quote(sctime), quote(smip)"
**
**        flag_test(int)
**        flag_clear(int)
**
** The flag_test() function takes the integer valued argument and
** ANDs it against the static variable "flag_value" below.  The
** function returns TRUE or false depending on the result.  The
** flag_clear() function masks off the bits from "flag_value" that
** are given in the argument.
**
** These functions are used below in the WHEN clause of a trigger to
** get the trigger to fire exactly once.
*/
                   " FROM subscriber WHERE sverified"
                   " AND mtime>=%lld", iStart);
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&rec,
        "%lld %s suname %s sdigest %s sdonotcall %s ssub %s"
        " sctime %s smip %s",
        db_column_int64(&q, 0), /* mtime */
        db_column_text(&q, 1),  /* semail (PK) */
        db_column_text(&q, 2),  /* suname */
        db_column_text(&q, 3),  /* sdigest */
        db_column_text(&q, 4),  /* sdonotcall */
static int flag_value = 0xffff;
static void flag_test_function(
  sqlite3_context *context,
        db_column_text(&q, 5),  /* ssub */
  int argc,
  sqlite3_value **argv
){
  int m = sqlite3_value_int(argv[0]);
  sqlite3_result_int(context, (flag_value&m)!=0 );
        db_column_text(&q, 6),  /* sctime */
}
static void flag_clear_function(
  sqlite3_context *context,
        db_column_text(&q, 7)   /* smip */
  int argc,
  sqlite3_value **argv
){
      );
  int m = sqlite3_value_int(argv[0]);
  flag_value &= ~m;
}

      blob_appendf(pOut, "config /subscriber %d\n%s\n",
/*
** Create the temporary _xfer_reportfmt and _xfer_user tables that are
** necessary in order to evalute the SQL text generated by the
** configure_render_special_name() routine.
**
** If replaceFlag is true, then the setup is such that the content in
** the SQL text will completely replace the current repository configuration.
** If replaceFlag is false, then the SQL text will be merged with the
** existing configuration.  When merging, existing values take priority
                   blob_size(&rec), blob_str(&rec));
      nCard++;
** over SQL text values.
*/
void configure_prepare_to_receive(int replaceFlag){
  static const char zSQL1[] =
    @ CREATE TEMP TABLE _xfer_reportfmt(
    @    rn integer primary key,  -- Report number
    @    owner text,              -- Owner of this report format (not used)
    @    title text UNIQUE ON CONFLICT IGNORE,  -- Title of this report
    @    cols text,               -- A color-key specification
    @    sqlcode text             -- An SQL SELECT statement for this report
    @ );
      blob_reset(&rec);
    @ CREATE TEMP TABLE _xfer_user(
    @   uid INTEGER PRIMARY KEY,        -- User ID
    @   login TEXT UNIQUE ON CONFLICT IGNORE,   -- login name of the user
    @   pw TEXT,                        -- password
    @   cap TEXT,                       -- Capabilities of this user
    @   cookie TEXT,                    -- WWW login cookie
    @   ipaddr TEXT,                    -- IP address for which cookie is valid
    @   cexpire DATETIME,               -- Time when cookie expires
    @   info TEXT,                      -- contact information
    @   photo BLOB                      -- JPEG image of this user
    @ );
    }
    db_finalize(&q);
    @ INSERT INTO _xfer_reportfmt SELECT * FROM reportfmt;
    @ INSERT INTO _xfer_user SELECT * FROM user;
  ;
  db_multi_exec(zSQL1);
  
  }
  /* When the replace flag is set, add triggers that run the first time
  ** that new data is seen.  The triggers run only once and delete all the
  ** existing data.
  db_prepare(&q, "SELECT mtime, quote(name), quote(value) FROM config"
                 " WHERE name=:name AND mtime>=%lld", iStart);
  for(ii=0; ii<count(aConfig); ii++){
    if( (aConfig[ii].groupMask & groupMask)!=0 && aConfig[ii].zName[0]!='@' ){
      const Setting * pSet = db_find_setting(aConfig[ii].zName, 0);
  */
  if( replaceFlag ){
    static const char zSQL2[] =
      if( pSet && pSet->sensitive ){
        /* https://fossil-scm.org/forum/forumpost/6179500deadf6ec7 */
        continue;
      @ CREATE TRIGGER _xfer_r1 BEFORE INSERT ON _xfer_reportfmt
      @ WHEN flag_test(1) BEGIN
      @   DELETE FROM _xfer_reportfmt;
      @   SELECT flag_clear(1);
      }
      db_bind_text(&q, ":name", aConfig[ii].zName);
      while( db_step(&q)==SQLITE_ROW ){
        blob_appendf(&rec,"%s %s value %s",
          db_column_text(&q, 0),
      @ END;
      @ CREATE TRIGGER _xfer_r2 BEFORE INSERT ON _xfer_user
      @ WHEN flag_test(2) BEGIN
          db_column_text(&q, 1),
      @   DELETE FROM _xfer_user;
      @   SELECT flag_clear(2);
      @ END;
      @ CREATE TEMP TRIGGER _xfer_r3 BEFORE INSERT ON shun
      @ WHEN flag_test(4) BEGIN
          db_column_text(&q, 2)
      @   DELETE FROM shun;
      @   SELECT flag_clear(4);
        );
      @ END;
    ;
    sqlite3_create_function(g.db, "flag_test", 1, SQLITE_UTF8, 0,
         flag_test_function, 0, 0);
    sqlite3_create_function(g.db, "flag_clear", 1, SQLITE_UTF8, 0,
         flag_clear_function, 0, 0);
        blob_appendf(pOut, "config /config %d\n%s\n",
                     blob_size(&rec), blob_str(&rec));
        nCard++;
    flag_value = 0xffff;
    db_multi_exec(zSQL2);
  }
}

        blob_reset(&rec);
      }
      db_reset(&q);
    }
  }
/*
** After receiving configuration data, call this routine to transfer
** the results into the main database.
*/
void configure_finalize_receive(void){
  db_finalize(&q);
  static const char zSQL[] =
    @ DELETE FROM user;
    @ INSERT INTO user SELECT * FROM _xfer_user;
    @ DELETE FROM reportfmt;
  return nCard;
    @ INSERT INTO reportfmt SELECT * FROM _xfer_reportfmt;
    @ DROP TABLE _xfer_user;
    @ DROP TABLE _xfer_reportfmt;
  ;
  db_multi_exec(zSQL);
}

/*
** Identify a configuration group by name.  Return its mask.
** Throw an error if no match.
*/
static int find_area(const char *z){
int configure_name_to_mask(const char *z, int notFoundIsFatal){
  int i;
  int n = strlen(z);
  for(i=0; i<count(aGroupName); i++){
    if( strncmp(z, aGroupName[i].zName, n)==0 ){
    if( strncmp(z, &aGroupName[i].zName[1], n)==0 ){
      return aGroupName[i].groupMask;
    }
  }
  if( notFoundIsFatal ){
  printf("Available configuration areas:\n");
  for(i=0; i<count(aGroupName); i++){
    printf("  %-10s %s\n", aGroupName[i].zName, aGroupName[i].zHelp);
  }
  fossil_fatal("no such configuration area: \"%s\"", z);
    fossil_print("Available configuration areas:\n");
    for(i=0; i<count(aGroupName); i++){
      fossil_print("  %-13s %s\n",
            &aGroupName[i].zName[1], aGroupName[i].zHelp);
    }
    fossil_fatal("no such configuration area: \"%s\"", z);
  }
  return 0;
}

/*
** Write SQL text into file zFilename that will restore the configuration
** area identified by mask to its current state from any other state.
*/
static void export_config(
  int mask,                 /* Mask indicating which configuration to export */
  int groupMask,            /* Mask indicating which configuration to export */
  const char *zMask,        /* Name of the configuration */
  sqlite3_int64 iStart,     /* Start date */
  const char *zFilename     /* Write into this file */
){
  int i;
  Blob out;
  blob_zero(&out);
  blob_appendf(&out, 
    "-- The \"%s\" configuration exported from\n"
    "-- repository \"%s\"\n"
    "-- on %s\n",
  blob_appendf(&out,
    "# The \"%s\" configuration exported from\n"
    "# repository \"%s\"\n"
    "# on %s\n",
    zMask, g.zRepositoryName,
    db_text(0, "SELECT datetime('now')")
  );
  for(i=0; i<count(aConfig); i++){
    if( (aConfig[i].groupMask & mask)!=0 ){
      const char *zName = aConfig[i].zName;
      if( zName[0]!='@' ){
        char *zValue = db_text(0, 
            "SELECT value FROM config WHERE name=%Q", zName);
        if( zValue ){
          blob_appendf(&out,"REPLACE INTO config VALUES(%Q,%Q);\n", 
                       zName, zValue);
        }
        free(zValue);
      }else{
        configure_render_special_name(zName, &out);
  configure_send_group(&out, groupMask, iStart);
      }
    }
  }
  blob_write_to_file(&out, zFilename);
  blob_reset(&out);
}


/*
** COMMAND: configuration
** COMMAND: configuration*
**
** Usage: %fossil configure METHOD ...
** Usage: %fossil configuration METHOD ... ?OPTIONS?
**
** Where METHOD is one of: export import merge pull push reset.  All methods
** Where METHOD is one of: export import merge pull push reset.
** accept the -R or --repository option to specific a repository.
**
**    %fossil configuration export AREA FILENAME
** >  fossil configuration export AREA FILENAME
**
**         Write to FILENAME exported configuraton information for AREA.
**         AREA can be one of:  all ticket skin project
**         Write to FILENAME exported configuration information for AREA.
**         AREA can be one of:
**
**             all email interwiki project shun skin
**             ticket user alias subscriber
**
**    %fossil configuration import FILENAME
** >  fossil configuration import FILENAME
**
**         Read a configuration from FILENAME, overwriting the current
**         configuration.
**
**    %fossil configuration merge FILENAME
** >  fossil configuration merge FILENAME
**
**         Read a configuration from FILENAME and merge its values into
**         the current configuration.  Existing values take priority over
**         values read from FILENAME.
**
**    %fossil configuration pull AREA ?URL?
** >  fossil configuration pull AREA ?URL?
**
**         Pull and install the configuration from a different server
**         identified by URL.  If no URL is specified, then the default
**         server is used. 
**         server is used.  Use the --overwrite flag to completely
**         replace local settings with content received from URL.
**
**    %fossil configuration push AREA ?URL?
** >  fossil configuration push AREA ?URL?
**
**         Push the local configuration into the remote server identified
**         by URL.  Admin privilege is required on the remote server for
**         this to work.
**         this to work.  When the same record exists both locally and on
**         the remote end, the one that was most recently changed wins.
**
**    %fossil configuration reset AREA
** >  fossil configuration reset AREA
**
**         Restore the configuration to the default.  AREA as above.
**
** WARNING: Do not import, merge, or pull configurations from an untrusted
** source.  The inbound configuration is not checked for safety and can
** introduce security vulnerabilities.
** >  fossil configuration sync AREA ?URL?
**
**         Synchronize configuration changes in the local repository with
**         the remote repository at URL.
**
** Options:
**    -R|--repository REPO       Affect repository REPO with changes
**
** See also: [[settings]], [[unset]]
*/
void configuration_cmd(void){
  int n;
  const char *zMethod;
  db_find_and_open_repository(0, 0);
  db_open_config(0, 0);
  if( g.argc<3 ){
    usage("export|import|merge|pull|reset ...");
    usage("SUBCOMMAND ...");
  }
  db_find_and_open_repository(1);
  zMethod = g.argv[2];
  n = strlen(zMethod);
  if( strncmp(zMethod, "export", n)==0 ){
    int mask;
    const char *zSince = find_option("since",0,1);
    sqlite3_int64 iStart;
    if( g.argc!=5 ){
      usage("export AREA FILENAME");
    }
    mask = find_area(g.argv[3]);
    export_config(mask, g.argv[3], g.argv[4]);
    mask = configure_name_to_mask(g.argv[3], 1);
    if( zSince ){
      iStart = db_multi_exec(
         "SELECT coalesce(strftime('%%s',%Q),strftime('%%s','now',%Q))+0",
         zSince, zSince
      );
    }else{
      iStart = 0;
    }
    export_config(mask, g.argv[3], iStart, g.argv[4]);
  }else
  if( strncmp(zMethod, "import", n)==0 
  if( strncmp(zMethod, "import", n)==0
       || strncmp(zMethod, "merge", n)==0 ){
    Blob in;
    int groupMask;
    if( g.argc!=4 ) usage(mprintf("%s FILENAME",zMethod));
    blob_read_from_file(&in, g.argv[3]);
    blob_read_from_file(&in, g.argv[3], ExtFILE);
    db_begin_transaction();
    configure_prepare_to_receive(zMethod[0]=='i');
    db_multi_exec("%s", blob_str(&in));
    configure_finalize_receive();
    if( zMethod[0]=='i' ){
      groupMask = CONFIGSET_ALL | CONFIGSET_OVERWRITE;
    }else{
      groupMask = CONFIGSET_ALL;
    }
    db_unprotect(PROTECT_USER);
    configure_receive_all(&in, groupMask);
    db_protect_pop();
    db_end_transaction(0);
  }else
  if( strncmp(zMethod, "pull", n)==0 || strncmp(zMethod, "push", n)==0 ){
  if( strncmp(zMethod, "pull", n)==0
   || strncmp(zMethod, "push", n)==0
   || strncmp(zMethod, "sync", n)==0
  ){
    int mask;
    const char *zServer;
    const char *zPw;
    const char *zServer = 0;
    int overwriteFlag = 0;

    if( strncmp(zMethod,"pull",n)==0 ){
      overwriteFlag = find_option("overwrite",0,0)!=0;
    }
    url_proxy_options();
    if( g.argc!=4 && g.argc!=5 ){
      usage("pull AREA ?URL?");
      usage(mprintf("%s AREA ?URL?", zMethod));
    }
    mask = find_area(g.argv[3]);
    mask = configure_name_to_mask(g.argv[3], 1);
    if( g.argc==5 ){
      zServer = g.argv[4];
      zPw = 0;
      g.dontKeepUrl = 1;
    }else{
      zServer = db_get("last-sync-url", 0);
      if( zServer==0 ){
        fossil_fatal("no server specified");
      }
    }
      zPw = db_get("last-sync-pw", 0);
    }
    url_parse(zServer);
    if( g.urlPasswd==0 && zPw ) g.urlPasswd = mprintf("%s", zPw);
    url_parse(zServer, URL_PROMPT_PW|URL_USE_CONFIG);
    if( g.url.protocol==0 ) fossil_fatal("no server URL specified");
    user_select();
    url_enable_proxy("via proxy: ");
    if( overwriteFlag ) mask |= CONFIGSET_OVERWRITE;
    if( strncmp(zMethod, "push", n)==0 ){
      client_sync(0,0,0,0,mask);
      client_sync(0,0,(unsigned)mask,0,0);
    }else if( strncmp(zMethod, "pull", n)==0 ){
      if( overwriteFlag ) db_unprotect(PROTECT_USER);
      client_sync(0,(unsigned)mask,0,0,0);
      if( overwriteFlag ) db_protect_pop();
    }else{
      client_sync(0,0,0,mask,0);
      client_sync(0,(unsigned)mask,(unsigned)mask,0,0);
    }
  }else
  if( strncmp(zMethod, "reset", n)==0 ){
    int mask, i;
    char *zBackup;
    if( g.argc!=4 ) usage("reset AREA");
    mask = find_area(g.argv[3]);
    zBackup = db_text(0, 
    mask = configure_name_to_mask(g.argv[3], 1);
    zBackup = db_text(0,
       "SELECT strftime('config-backup-%%Y%%m%%d%%H%%M%%f','now')");
    db_begin_transaction();
    export_config(mask, g.argv[3], zBackup);
    export_config(mask, g.argv[3], 0, zBackup);
    for(i=0; i<count(aConfig); i++){
      const char *zName = aConfig[i].zName;
      if( (aConfig[i].groupMask & mask)==0 ) continue;
      if( zName[0]!='@' ){
        db_unprotect(PROTECT_CONFIG);
        db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
        db_protect_pop();
      }else if( strcmp(zName,"@user")==0 ){
      }else if( fossil_strcmp(zName,"@user")==0 ){
        db_unprotect(PROTECT_USER);
        db_multi_exec("DELETE FROM user");
        db_protect_pop();
        db_create_default_users(0, 0);
      }else if( strcmp(zName,"@concealed")==0 ){
      }else if( fossil_strcmp(zName,"@concealed")==0 ){
        db_multi_exec("DELETE FROM concealed");
      }else if( strcmp(zName,"@shun")==0 ){
      }else if( fossil_strcmp(zName,"@shun")==0 ){
        db_multi_exec("DELETE FROM shun");
      }else if( fossil_strcmp(zName,"@subscriber")==0 ){
        if( db_table_exists("repository","subscriber") ){
          db_multi_exec("DELETE FROM subscriber");
        }
      }else if( fossil_strcmp(zName,"@forum")==0 ){
        if( db_table_exists("repository","forumpost") ){
          db_multi_exec("DELETE FROM forumpost");
          db_multi_exec("DELETE FROM forumthread");
        }
      }else if( strcmp(zName,"@reportfmt")==0 ){
      }else if( fossil_strcmp(zName,"@reportfmt")==0 ){
        db_multi_exec("DELETE FROM reportfmt");
        assert( strchr(zRepositorySchemaDefaultReports,'%')==0 );
        db_multi_exec(zRepositorySchemaDefaultReports /*works-like:""*/);
      }
    }
    db_end_transaction(0);
    printf("Configuration reset to factory defaults.\n");
    printf("To recover, use:  %s %s import %s\n", 
    fossil_print("Configuration reset to factory defaults.\n");
    fossil_print("To recover, use:  %s %s import %s\n",
            g.argv[0], g.argv[1], zBackup);
    rebuildMask |= mask;
  }else
  {
    fossil_fatal("METHOD should be one of:"
                 " export import merge pull push reset");
  }
  configure_rebuild();
}


/*
** COMMAND: test-var-list
**
** Usage: %fossil test-var-list ?PATTERN? ?--unset? ?--mtime?
**
** Show the content of the CONFIG table in a repository.  If PATTERN is
** specified, then only show the entries that match that glob pattern.
** Last modification time is shown if the --mtime option is present.
**
** If the --unset option is included, then entries are deleted rather than
** being displayed.  WARNING! This cannot be undone.  Be sure you know what
** you are doing!  The --unset option only works if there is a PATTERN.
** Probably you should run the command once without --unset to make sure
** you know exactly what is being deleted.
**
** If not in an open check-out, use the -R REPO option to specify a
** a repository.
*/
void test_var_list_cmd(void){
  Stmt q;
  int i, j;
  const char *zPattern = 0;
  int doUnset;
  int showMtime;
  Blob sql;
  Blob ans;
  unsigned char zTrans[1000];

  doUnset = find_option("unset",0,0)!=0;
  showMtime = find_option("mtime",0,0)!=0;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  verify_all_options();
  if( g.argc>=3 ){
    zPattern = g.argv[2];
  }
  blob_init(&sql,0,0);
  blob_appendf(&sql, "SELECT name, value, datetime(mtime,'unixepoch')"
                     " FROM config");
  if( zPattern ){
    blob_appendf(&sql, " WHERE name GLOB %Q", zPattern);
  }
  if( showMtime ){
    blob_appendf(&sql, " ORDER BY mtime, name");
  }else{
    blob_appendf(&sql, " ORDER BY name");
  }
  db_prepare(&q, "%s", blob_str(&sql)/*safe-for-%s*/);
  blob_reset(&sql);
#define MX_VAL 40
#define MX_NM  28
#define MX_LONGNM 60
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q,0);
    int nName = db_column_bytes(&q,0);
    const char *zValue = db_column_text(&q,1);
    int szValue = db_column_bytes(&q,1);
    const char *zMTime = db_column_text(&q,2);
    for(i=j=0; j<MX_VAL && zValue[i]; i++){
      unsigned char c = (unsigned char)zValue[i];
      if( c>=' ' && c<='~' ){
        zTrans[j++] = c;
      }else{
        zTrans[j++] = '\\';
        if( c=='\n' ){
          zTrans[j++] = 'n';
        }else if( c=='\r' ){
          zTrans[j++] = 'r';
        }else if( c=='\t' ){
          zTrans[j++] = 't';
        }else{
          zTrans[j++] = '0' + ((c>>6)&7);
          zTrans[j++] = '0' + ((c>>3)&7);
          zTrans[j++] = '0' + (c&7);
        }
      }
    }
    zTrans[j] = 0;
    if( i<szValue ){
      sqlite3_snprintf(sizeof(zTrans)-j, (char*)zTrans+j, "...+%d", szValue-i);
      j += (int)strlen((char*)zTrans+j);
    }
    if( showMtime ){
      fossil_print("%s:%*s%s\n", zName, 58-nName, "", zMTime);
    }else if( nName<MX_NM-2 ){
      fossil_print("%s:%*s%s\n", zName, MX_NM-1-nName, "", zTrans);
    }else if( nName<MX_LONGNM-2 && j<10 ){
      fossil_print("%s:%*s%s\n", zName, MX_LONGNM-1-nName, "", zTrans);
    }else{
      fossil_print("%s:\n%*s%s\n", zName, MX_NM, "", zTrans);
    }
  }
  db_finalize(&q);
  if( zPattern && doUnset ){
    prompt_user("Delete all of the above? (y/N)? ", &ans);
    if( blob_str(&ans)[0]=='y' || blob_str(&ans)[0]=='Y' ){
      db_multi_exec("DELETE FROM config WHERE name GLOB %Q", zPattern);
    }
    blob_reset(&ans);
  }
}

/*
** COMMAND: test-var-get
**
** Usage: %fossil test-var-get VAR ?FILE?
**
** Write the text of the VAR variable into FILE.  If FILE is "-"
** or is omitted then output goes to standard output.  VAR can be a
** GLOB pattern.
**
** If not in an open check-out, use the -R REPO option to specify a
** a repository.
*/
void test_var_get_cmd(void){
  const char *zVar;
  const char *zFile;
  int n;
  Blob x;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  verify_all_options();
  if( g.argc<3 ){
    usage("VAR ?FILE?");
  }
  zVar = g.argv[2];
  zFile = g.argc>=4 ? g.argv[3] : "-";
  n = db_int(0, "SELECT count(*) FROM config WHERE name GLOB %Q", zVar);
  if( n==0 ){
    fossil_fatal("no match for %Q", zVar);
  }
  if( n>1 ){
    fossil_fatal("multiple matches: %s",
      db_text(0, "SELECT group_concat(quote(name),', ') FROM ("
                 " SELECT name FROM config WHERE name GLOB %Q ORDER BY 1)",
                 zVar));
  }
  blob_init(&x,0,0);
  db_blob(&x, "SELECT value FROM config WHERE name GLOB %Q", zVar);
  blob_write_to_file(&x, zFile);
}

/*
** COMMAND: test-var-set
**
** Usage: %fossil test-var-set VAR ?VALUE? ?--file FILE?
**
** Store VALUE or the content of FILE (exactly one of which must be
** supplied) into variable VAR.  Use a FILE of "-" to read from
** standard input.
**
** WARNING: changing the value of a variable can interfere with the
** operation of Fossil.  Be sure you know what you are doing.
**
** Use "--blob FILE" instead of "--file FILE" to load a binary blob
** such as a GIF.
*/
void test_var_set_cmd(void){
  const char *zVar;
  const char *zFile;
  const char *zBlob;
  Blob x;
  Stmt ins;
  zFile = find_option("file",0,1);
  zBlob = find_option("blob",0,1);
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  verify_all_options();
  if( g.argc<3 || (zFile==0 && zBlob==0 && g.argc<4) ){
    usage("VAR ?VALUE? ?--file FILE?");
  }
  zVar = g.argv[2];
  if( zFile ){
    if( zBlob ) fossil_fatal("cannot do both --file or --blob");
    blob_read_from_file(&x, zFile, ExtFILE);
  }else if( zBlob ){
    blob_read_from_file(&x, zBlob, ExtFILE);
  }else{
    blob_init(&x,g.argv[3],-1);
  }
  db_unprotect(PROTECT_CONFIG);
  db_prepare(&ins,
     "REPLACE INTO config(name,value,mtime)"
     "VALUES(%Q,:val,now())", zVar);
  if( zBlob ){
    db_bind_blob(&ins, ":val", &x);
  }else{
    db_bind_text(&ins, ":val", blob_str(&x));
  }
  db_step(&ins);
  db_finalize(&ins);
  db_protect_pop();
  blob_reset(&x);
}
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Procedures store and retrieve records from the repository
*/
#include "config.h"
#include "content.h"
#include <assert.h>

/*
** Macros for debugging
*/
#if 0
# define CONTENT_TRACE(X)  printf X;
#else
# define CONTENT_TRACE(X)
#endif

/*
** The artifact retrival cache
** The artifact retrieval cache
*/
#define MX_CACHE_CNT  50    /* Maximum number of positive cache entries */
#define EXPELL_INTERVAL 5   /* How often to expell from a full cache */
static struct {
  i64 szTotal;         /* Total size of all entries in the cache */
  int n;               /* Current number of positive cache entries */
  int n;               /* Current number of cache entries */
  int nAlloc;          /* Number of slots allocated in a[] */
  int nextAge;         /* Age counter for implementing LRU */
  int skipCnt;         /* Used to limit entries expelled from cache */
  struct {             /* One instance of this for each cache entry */
  struct cacheLine {   /* One instance of this for each cache entry */
    int rid;                  /* Artifact id */
    int age;                  /* Age.  Newer is larger */
    Blob content;             /* Content of the artifact */
  } a[MX_CACHE_CNT];   /* The positive cache */
  } *a;                /* The positive cache */
  Bag inCache;         /* Set of artifacts currently in cache */

  /*
  ** The missing artifact cache.
  **
  ** Artifacts whose record ID are in missingCache cannot be retrieved
  ** either because they are phantoms or because they are a delta that
  ** depends on a phantom.  Artifacts whose content we are certain is
  ** available are in availableCache.  If an artifact is in neither cache
  ** then its current availablity is unknown.
  ** then its current availability is unknown.
  */
  Bag missing;         /* Cache of artifacts that are incomplete */
  Bag available;       /* Cache of artifacts that are complete */
} contentCache;

/*
** Remove the oldest element from the content cache
*/
static void content_cache_expire_oldest(void){
  int i;
  int mnAge = contentCache.nextAge;
  int mn = -1;
  for(i=0; i<contentCache.n; i++){
    if( contentCache.a[i].age<mnAge ){
      mnAge = contentCache.a[i].age;
      mn = i;

    }
  }
  if( mn>=0 ){
    bag_remove(&contentCache.inCache, contentCache.a[mn].rid);
    contentCache.szTotal -= blob_size(&contentCache.a[mn].content);
    blob_reset(&contentCache.a[mn].content);
    contentCache.n--;
    contentCache.a[mn] = contentCache.a[contentCache.n];
  }
}

/*
** Add an entry to the content cache.
**
** This routines hands responsibility for the artifact over to the cache.
** The cache will deallocate memory when it has finished with it.
*/
void content_cache_insert(int rid, Blob *pBlob){
  struct cacheLine *p;
  if( contentCache.n>500 || contentCache.szTotal>50000000 ){
    i64 szBefore;
    do{
      szBefore = contentCache.szTotal;
      content_cache_expire_oldest();
    }while( contentCache.szTotal>50000000 && contentCache.szTotal<szBefore );
  }
  if( contentCache.n>=contentCache.nAlloc ){
    contentCache.nAlloc = contentCache.nAlloc*2 + 10;
    contentCache.a = fossil_realloc(contentCache.a,
                             contentCache.nAlloc*sizeof(contentCache.a[0]));
  }
  p = &contentCache.a[contentCache.n++];
  p->rid = rid;
  p->age = contentCache.nextAge++;
  contentCache.szTotal += blob_size(pBlob);
  p->content = *pBlob;
  blob_zero(pBlob);
  bag_insert(&contentCache.inCache, rid);
}

/*
** Clear the content cache.
** Clear the content cache. If it is passed true, it
** also frees all associated memory, otherwise it may
** retain parts for future uses of the cache.
*/
void content_clear_cache(void){
void content_clear_cache(int bFreeIt){
  int i;
  for(i=0; i<contentCache.n; i++){
    blob_reset(&contentCache.a[i].content);
  }
  bag_clear(&contentCache.missing);
  bag_clear(&contentCache.available);
  bag_clear(&contentCache.inCache);
  contentCache.n = 0;
  contentCache.szTotal = 0;
  if(bFreeIt){
    fossil_free(contentCache.a);
    contentCache.a = 0;
    contentCache.nAlloc = 0;
  }
}

/*
** Return the srcid associated with rid.  Or return 0 if rid is 
** Return the srcid associated with rid.  Or return 0 if rid is
** original content and not a delta.
*/
static int findSrcid(int rid){
int delta_source_rid(int rid){
  static Stmt q;
  int srcid;
  db_static_prepare(&q, "SELECT srcid FROM delta WHERE rid=:rid");
  db_bind_int(&q, ":rid", rid);
  if( db_step(&q)==SQLITE_ROW ){
    srcid = db_column_int(&q, 0);
  }else{
    srcid = 0;
  }
  db_reset(&q);
  return srcid;
}

/*
** Return the blob.size field given blob.rid
*/
int content_size(int rid, int dflt){
  static Stmt q;
  int sz = dflt;
  db_static_prepare(&q, "SELECT size FROM blob WHERE rid=:r");
  db_bind_int(&q, ":r", rid);
  if( db_step(&q)==SQLITE_ROW ){
    sz = db_column_int(&q, 0);
  }
  db_reset(&q);
  return sz;
}

/*
** Check to see if content is available for artifact "rid".  Return
** true if it is.  Return false if rid is a phantom or depends on
** a phantom.
*/
int content_is_available(int rid){
  int srcid;
  int depth = 0;  /* Limit to recursion depth */
  while( depth++ < 10000000 ){
  if( bag_find(&contentCache.missing, rid) ){
    return 0;
  }
  if( bag_find(&contentCache.available, rid) ){
    return 1;
  }
  if( db_int(-1, "SELECT size FROM blob WHERE rid=%d", rid)<0 ){
    bag_insert(&contentCache.missing, rid);
    return 0;
  }
  srcid = findSrcid(rid);
  if( srcid==0 ){
    bag_insert(&contentCache.available, rid);
    return 1;
  }
  if( content_is_available(srcid) ){
    if( bag_find(&contentCache.missing, rid) ){
      return 0;
    }
    if( bag_find(&contentCache.available, rid) ){
      return 1;
    }
    if( content_size(rid, -1)<0 ){
      bag_insert(&contentCache.missing, rid);
      return 0;
    }
    srcid = delta_source_rid(rid);
    if( srcid==0 ){
      bag_insert(&contentCache.available, rid);
      return 1;
    }
    rid = srcid;
    bag_insert(&contentCache.available, rid);
    return 1;
  }else{
    bag_insert(&contentCache.missing, rid);
    return 0;
  }
  fossil_panic("delta-loop in repository");
  return 0;
  }
}

/*
** Mark artifact rid as being available now.  Update the cache to
** show that everything that was formerly unavailable because rid
** was missing is now available.
*/
static void content_mark_available(int rid){
  Bag pending;
  Stmt q;
  static Stmt q;
  if( bag_find(&contentCache.available, rid) ) return;
  bag_init(&pending);
  bag_insert(&pending, rid);
  while( (rid = bag_first(&pending))!=0 ){
    bag_remove(&pending, rid);
    bag_remove(&contentCache.missing, rid);
    bag_insert(&contentCache.available, rid);
    db_prepare(&q, "SELECT rid FROM delta WHERE srcid=%d", rid);
    db_static_prepare(&q, "SELECT rid FROM delta WHERE srcid=:rid");
    db_bind_int(&q, ":rid", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int nx = db_column_int(&q, 0);
      bag_insert(&pending, nx);
    }
    db_finalize(&q);
    db_reset(&q);
  }
  bag_clear(&pending);
}

/*
** Get the blob.content value for blob.rid=rid.  Return 1 on success or
** 0 on failure.
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    blob_uncompress(pBlob, pBlob);
    rc = 1;
  }
  db_reset(&q);
  return rc;
}


/*
** Extract the content for ID rid and put it into the
** uninitialized blob.  Return 1 on success.  If the record
** is a phantom, zero pBlob and return 0.
*/
int content_get(int rid, Blob *pBlob){
  Blob src;
  int srcid;
  int rc = 0;
  int rc;
  int i;
  static Bag inProcess;
  int nextRid;

  assert( g.repositoryOpen );
  blob_zero(pBlob);
  if( rid==0 ) return 0;

  /* Early out if we know the content is not available */
  if( bag_find(&contentCache.missing, rid) ){
    CONTENT_TRACE(("%*smiss from cache: %d\n",
                    bag_count(&inProcess), "", rid))
    return 0;
  }

  /* Look for the artifact in the cache first */
  if( bag_find(&contentCache.inCache, rid) ){
  for(i=0; i<contentCache.n; i++){
    if( contentCache.a[i].rid==rid ){
    for(i=0; i<contentCache.n; i++){
      if( contentCache.a[i].rid==rid ){
      *pBlob = contentCache.a[i].content;
      blob_zero(&contentCache.a[i].content);
      contentCache.n--;
        blob_copy(pBlob, &contentCache.a[i].content);
        contentCache.a[i].age = contentCache.nextAge++;
      if( i<contentCache.n ){
        contentCache.a[i] = contentCache.a[contentCache.n];
      }
      CONTENT_TRACE(("%*scache: %d\n", 
                    bag_count(&inProcess), "", rid))
      return 1;
    }
  }

  /* See if we need to apply a delta to find this artifact */
  srcid = findSrcid(rid);
  CONTENT_TRACE(("%*ssearching for %d.  Need %d.\n",
                 bag_count(&inProcess), "", rid, srcid))
        return 1;
      }
    }
  }

  nextRid = delta_source_rid(rid);
  if( nextRid==0 ){
    rc = content_of_blob(rid, pBlob);
  }else{
    int n = 1;
    int nAlloc = 10;
    int *a = 0;
    int mx;
    Blob delta, next;

    a = fossil_malloc( sizeof(a[0])*nAlloc );
    a[0] = rid;
    a[1] = nextRid;
    n = 1;
    while( !bag_find(&contentCache.inCache, nextRid)
        && (nextRid = delta_source_rid(nextRid))>0 ){
      n++;
      if( n>=nAlloc ){
        if( n>db_int(0, "SELECT max(rid) FROM blob") ){
          fossil_panic("infinite loop in DELTA table");

        }
  if( srcid ){
    /* Yes, a delta is required */
    if( bag_find(&inProcess, srcid) ){
      db_multi_exec(
        "UPDATE blob SET content=NULL, size=-1 WHERE rid=%d;"
        "DELETE FROM delta WHERE rid=%d;"
        "INSERT OR IGNORE INTO phantom VALUES(%d);",
        srcid, srcid, srcid
      );
      blob_zero(pBlob);
        nAlloc = nAlloc*2 + 10;
      return 0;
    }
        a = fossil_realloc(a, nAlloc*sizeof(a[0]));
      }
    bag_insert(&inProcess, srcid);

    if( content_get(srcid, &src) ){
      a[n] = nextRid;
    }
    mx = n;
    rc = content_get(a[n], pBlob);
      Blob delta;
      if( content_of_blob(rid, &delta) ){
    n--;
    while( rc && n>=0 ){
      rc = content_of_blob(a[n], &delta);
        blob_init(pBlob,0,0);
        blob_delta_apply(&src, &delta, pBlob);
        blob_reset(&delta);
      if( rc ){
        if( blob_delta_apply(pBlob, &delta, &next)<0 ){
          rc = 1;
        }else{
          blob_reset(&delta);
        rc = 1;
      }

          if( (mx-n)%8==0 ){
      /* Save the srcid artifact in the cache */
      if( contentCache.n<MX_CACHE_CNT ){
        i = contentCache.n++;
            content_cache_insert(a[n+1], pBlob);
      }else if( ((contentCache.skipCnt++)%EXPELL_INTERVAL)!=0 ){
        i = -1;
      }else{
          }else{
        int j, best;
        best = contentCache.nextAge+1;
        i = -1;
        for(j=0; j<contentCache.n; j++){
          if( contentCache.a[j].age<best ){
            i = j;
            best = contentCache.a[j].age;
          }
        }
        CONTENT_TRACE(("%*sexpell %d from cache\n",
                       bag_count(&inProcess), "", contentCache.a[i].rid))
        blob_reset(&contentCache.a[i].content);
      }
            blob_reset(pBlob);
          }
      if( i>=0 ){
        contentCache.a[i].content = src;
        contentCache.a[i].age = contentCache.nextAge++;
        contentCache.a[i].rid = srcid;
        CONTENT_TRACE(("%*sadd %d to cache\n",
                       bag_count(&inProcess), "", srcid))
      }else{
        blob_reset(&src);
      }
    }
          *pBlob = next;
        }
      }
    bag_remove(&inProcess, srcid);
  }else{
    /* No delta required.  Read content directly from the database */
    if( content_of_blob(rid, pBlob) ){
      rc = 1;
      n--;
    }
    free(a);
    if( !rc ) blob_reset(pBlob);
  }
  if( rc==0 ){
    bag_insert(&contentCache.missing, rid);
  }else{
    bag_insert(&contentCache.available, rid);
  }
  return rc;
}

/*
** COMMAND:  artifact
** COMMAND: artifact*
**
** Usage: %fossil artifact ARTIFACT-ID  ?OUTPUT-FILENAME?
** Usage: %fossil artifact ARTIFACT-ID ?OUTPUT-FILENAME? ?OPTIONS?
**
** Extract an artifact by its SHA1 hash and write the results on
** standard output, or if the optional 4th argument is given, in
** Extract an artifact by its artifact hash and write the results on
** standard output, or if the optional second argument is given, in
** the named output file.
**
** Options:
**    -R|--repository REPO       Extract artifacts from repository REPO
**
** See also: [[finfo]]
*/
void artifact_cmd(void){
  int rid;
  Blob content;
  const char *zFile;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  if( g.argc!=4 && g.argc!=3 ) usage("RECORDID ?FILENAME?");
  if( g.argc!=4 && g.argc!=3 ) usage("ARTIFACT-ID ?FILENAME? ?OPTIONS?");
  zFile = g.argc==4 ? g.argv[3] : "-";
  db_must_be_within_tree();
  rid = name_to_rid(g.argv[2]);
  if( rid==0 ){
    fossil_fatal("%s",g.zErrMsg);
  }
  content_get(rid, &content);
  blob_write_to_file(&content, zFile);
}

/*
** COMMAND:  test-content-rawget
** COMMAND: test-content-rawget
**
** Extract a blob from the database and write it into a file.  This
** version does not expand the delta.
*/
void test_content_rawget_cmd(void){
  int rid;
  Blob content;
  const char *zFile;
  if( g.argc!=4 && g.argc!=3 ) usage("RECORDID ?FILENAME?");
  zFile = g.argc==4 ? g.argv[3] : "-";
  db_must_be_within_tree();
  rid = name_to_rid(g.argv[2]);
  blob_zero(&content);
  db_blob(&content, "SELECT content FROM blob WHERE rid=%d", rid);
  blob_uncompress(&content, &content);
  blob_write_to_file(&content, zFile);
}

/*
** The following flag is set to disable the automatic calls to
** manifest_crosslink() when a record is dephantomized.  This
** flag can be set (for example) when doing a clone when we know
** that rebuild will be run over all records at the conclusion
** of the operation.
*/
static int ignoreDephantomizations = 0;

/*
** When a record is converted from a phantom to a real record,
** if that record has other records that are derived by delta,
** then call manifest_crosslink() on those other records.
**
** If the formerly phantom record or any of the other records
** derived by delta from the former phantom are a baseline manifest,
** then also invoke manifest_crosslink() on the delta-manifests
** associated with that baseline.
**
** Tail recursion is used to minimize stack depth.
*/
void after_dephantomize(int rid, int linkFlag){
  Stmt q;
  int nChildAlloc = 0;
  int *aChild = 0;
  Blob content;

  if( ignoreDephantomizations ) return;
  while( rid ){
    int nChildUsed = 0;
    int i;

    /* Parse the object rid itself */
    if( linkFlag ){
      content_get(rid, &content);
      manifest_crosslink(rid, &content, MC_NONE);
      assert( blob_is_reset(&content) );
    }

    /* Parse all delta-manifests that depend on baseline-manifest rid */
  db_prepare(&q, "SELECT rid FROM delta WHERE srcid=%d", rid);
  while( db_step(&q)==SQLITE_ROW ){
    int tid = db_column_int(&q, 0);
    after_dephantomize(tid, 1);
  }
  db_finalize(&q);
  if( linkFlag ){
    Blob content;
    content_get(rid, &content);
    manifest_crosslink(rid, &content);
    blob_reset(&content);
    db_prepare(&q, "SELECT rid FROM orphan WHERE baseline=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
        nChildAlloc = nChildAlloc*2 + 10;
        aChild = fossil_realloc(aChild, nChildAlloc*sizeof(aChild));
      }
      aChild[nChildUsed++] = child;
    }
    db_finalize(&q);
    for(i=0; i<nChildUsed; i++){
      content_get(aChild[i], &content);
      manifest_crosslink(aChild[i], &content, MC_NONE);
      assert( blob_is_reset(&content) );
    }
    if( nChildUsed ){
      db_multi_exec("DELETE FROM orphan WHERE baseline=%d", rid);
    }

    /* Recursively dephantomize all artifacts that are derived by
    ** delta from artifact rid and which have not already been
    ** cross-linked.  */
    nChildUsed = 0;
    db_prepare(&q,
       "SELECT rid FROM delta"
       " WHERE srcid=%d"
       "   AND NOT EXISTS(SELECT 1 FROM mlink WHERE mid=delta.rid)",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      int child = db_column_int(&q, 0);
      if( nChildUsed>=nChildAlloc ){
        nChildAlloc = nChildAlloc*2 + 10;
        aChild = fossil_realloc(aChild, nChildAlloc*sizeof(aChild));
      }
      aChild[nChildUsed++] = child;
    }
    db_finalize(&q);
    for(i=1; i<nChildUsed; i++){
      after_dephantomize(aChild[i], 1);
    }

    /* Tail recursion for the common case where only a single artifact
    ** is derived by delta from rid... */
    rid = nChildUsed>0 ? aChild[0] : 0;
    linkFlag = 1;
  }
  free(aChild);
}

/*
** Turn dephantomization processing on or off.
*/
void content_enable_dephantomize(int onoff){
  ignoreDephantomizations = !onoff;
}

/*
** Make sure the g.rcvid global variable has been initialized.
**
** If the g.zIpAddr variable has not been set when this routine is
** called, use zSrc as the source of content for the rcvfrom
** table entry.
*/
void content_rcvid_init(const char *zSrc){
  if( g.rcvid==0 ){
    user_select();
    if( g.zIpAddr ) zSrc = g.zIpAddr;
    db_multi_exec(
       "INSERT INTO rcvfrom(uid, mtime, nonce, ipaddr)"
       "VALUES(%d, julianday('now'), %Q, %Q)",
       g.userUid, g.zNonce, zSrc
    );
    g.rcvid = db_last_insert_rowid();
  }
}

/*
** Write content into the database.  Return the record ID.  If the
** content is already in the database, just return the record ID.
**
** If srcId is specified, then pBlob is delta content from
** the srcId record.  srcId might be a phantom.
**
** pBlob is normally uncompressed text.  But if nBlob>0 then the
** pBlob value has already been compressed and nBlob is its uncompressed
** size.  If nBlob>0 then zUuid must be valid.
**
** zUuid is the UUID of the artifact, if it is specified.  When srcId is
** specified then zUuid must always be specified.  If srcId is zero,
** and zUuid is zero then the correct zUuid is computed from pBlob.
**
** If the record already exists but is a phantom, the pBlob content
** is inserted and the phatom becomes a real record.
**
** The original content of pBlob is not disturbed.  The caller continues
** to be responsible for pBlob.  This routine does *not* take over
** responsibility for freeing pBlob.
*/
int content_put(Blob *pBlob, const char *zUuid, int srcId){
int content_put_ex(
  Blob *pBlob,              /* Content to add to the repository */
  const char *zUuid,        /* artifact hash of reconstructed pBlob */
  int srcId,                /* pBlob is a delta from this entry */
  int nBlob,                /* pBlob is compressed. Original size is this */
  int isPrivate             /* The content should be marked private */
){
  int size;
  int rid;
  Stmt s1;
  Blob cmpr;
  Blob hash;
  int markAsUnclustered = 0;
  int isDephantomize = 0;
  

  assert( g.repositoryOpen );
  assert( pBlob!=0 );
  assert( srcId==0 || zUuid!=0 );
  db_begin_transaction();
  if( zUuid==0 ){
    assert( pBlob!=0 );
    sha1sum_blob(pBlob, &hash);
    assert( nBlob==0 );
    /* First check the auxiliary hash to see if there is already an artifact
    ** that uses the auxiliary hash name */
    hname_hash(pBlob, 1, &hash);
    rid = fast_uuid_to_rid(blob_str(&hash));
    if( rid==0 ){
      /* No existing artifact with the auxiliary hash name.  Therefore, use
      ** the primary hash name. */
      blob_reset(&hash);
      hname_hash(pBlob, 0, &hash);
    }
  }else{
    blob_init(&hash, zUuid, -1);
  }
  if( g.eHashPolicy==HPOLICY_AUTO && blob_size(&hash)>HNAME_LEN_SHA1 ){
    g.eHashPolicy = HPOLICY_SHA3;
    db_set_int("hash-policy", HPOLICY_SHA3, 0);
  }
  if( nBlob ){
    size = nBlob;
  }else{
  size = blob_size(pBlob);
    size = blob_size(pBlob);
  db_begin_transaction();
    if( srcId ){
      size = delta_output_size(blob_buffer(pBlob), size);
    }
  }

  /* Check to see if the entry already exists and if it does whether
  ** or not the entry is a phantom
  */
  db_prepare(&s1, "SELECT rid, size FROM blob WHERE uuid=%B", &hash);
  if( db_step(&s1)==SQLITE_ROW ){
    rid = db_column_int(&s1, 0);
    if( db_column_int(&s1, 1)>=0 || pBlob==0 ){
      /* Either the entry is not a phantom or it is a phantom but we
    if( db_column_int(&s1, 1)>=0 ){
      /* The entry is not a phantom. There is nothing for us to do
      ** have no data with which to dephantomize it.  In either case,
      ** there is nothing for us to do other than return the RID. */
      ** other than return the RID. */
      db_finalize(&s1);
      db_end_transaction(0);
      return rid;
    }
  }else{
    rid = 0;  /* No entry with the same UUID currently exists */
    rid = 0;  /* No entry with the same hash currently exists */
    markAsUnclustered = 1;
  }
  db_finalize(&s1);

  /* Construct a received-from ID if we do not already have one */
  if( g.rcvid==0 ){
  content_rcvid_init(0);
    db_multi_exec(
       "INSERT INTO rcvfrom(uid, mtime, nonce, ipaddr)"
       "VALUES(%d, julianday('now'), %Q, %Q)",
       g.userUid, g.zNonce, g.zIpAddr
    );
    g.rcvid = db_last_insert_rowid();
  }

  blob_compress(pBlob, &cmpr);

  if( nBlob ){
    cmpr = pBlob[0];
  }else{
    blob_compress(pBlob, &cmpr);
  }
  if( rid>0 ){
    /* We are just adding data to a phantom */
    db_prepare(&s1,
      "UPDATE blob SET rcvid=%d, size=%d, content=:data WHERE rid=%d",
       g.rcvid, size, rid
    );
    db_bind_blob(&s1, ":data", &cmpr);
    db_exec(&s1);
    db_multi_exec("DELETE FROM phantom WHERE rid=%d", rid);
    if( srcId==0 || content_is_available(srcId) ){
      isDephantomize = 1;
      content_mark_available(rid);
    }
  }else{
    /* We are creating a new entry */
    db_prepare(&s1,
      "INSERT INTO blob(rcvid,size,uuid,content)"
      "VALUES(%d,%d,'%b',:data)",
       g.rcvid, size, &hash
      "VALUES(%d,%d,'%q',:data)",
       g.rcvid, size, blob_str(&hash)
    );
    db_bind_blob(&s1, ":data", &cmpr);
    db_exec(&s1);
    rid = db_last_insert_rowid();
    if( !pBlob ){
      db_multi_exec("INSERT OR IGNORE INTO phantom VALUES(%d)", rid);
    }
  }
    if( g.markPrivate ){
      db_multi_exec("INSERT INTO private VALUES(%d)", rid);
      markAsUnclustered = 0;
    }
  if( g.markPrivate || isPrivate ){
    db_multi_exec("INSERT OR IGNORE INTO private VALUES(%d)", rid);
    markAsUnclustered = 0;
  }
  }
  blob_reset(&cmpr);
  if( nBlob==0 ) blob_reset(&cmpr);

  /* If the srcId is specified, then the data we just added is
  ** really a delta.  Record this fact in the delta table.
  */
  if( srcId ){
    db_multi_exec("REPLACE INTO delta(rid,srcid) VALUES(%d,%d)", rid, srcId);
  }
  if( !isDephantomize && bag_find(&contentCache.missing, rid) && 
  if( !isDephantomize && bag_find(&contentCache.missing, rid) &&
      (srcId==0 || content_is_available(srcId)) ){
    content_mark_available(rid);
  }
  if( isDephantomize ){
    after_dephantomize(rid, 0);
  }
  

  /* Add the element to the unclustered table if has never been
  ** previously seen.
  */
  if( markAsUnclustered ){
    db_multi_exec("INSERT OR IGNORE INTO unclustered VALUES(%d)", rid);
  }

  /* Finish the transaction and cleanup */
  db_finalize(&s1);
  db_end_transaction(0);
  blob_reset(&hash);

  /* Make arrangements to verify that the data can be recovered
  ** before we commit */
  verify_before_commit(rid);
  return rid;
}

/*
** This is the simple common case for inserting content into the
** repository.  pBlob is the content to be inserted.
**
** pBlob is uncompressed and is not deltaed.  It is exactly the content
** to be inserted.
**
** The original content of pBlob is not disturbed.  The caller continues
** to be responsible for pBlob.  This routine does *not* take over
** responsiblity for freeing pBlob.
*/
int content_put(Blob *pBlob){
  return content_put_ex(pBlob, 0, 0, 0, 0);
}


/*
** Create a new phantom with the given UUID and return its artifact ID.
** Create a new phantom with the given hash and return its artifact ID.
*/
int content_new(const char *zUuid){
int content_new(const char *zUuid, int isPrivate){
  int rid;
  static Stmt s1, s2, s3;
  

  assert( g.repositoryOpen );
  db_begin_transaction();
  if( uuid_is_shunned(zUuid) ){
    db_end_transaction(0);
    return 0;
  }
  db_static_prepare(&s1,
    "INSERT INTO blob(rcvid,size,uuid,content)"
    "VALUES(0,-1,:uuid,NULL)"
  );
  db_bind_text(&s1, ":uuid", zUuid);
  db_exec(&s1);
  rid = db_last_insert_rowid();
  db_static_prepare(&s2,
    "INSERT INTO phantom VALUES(:rid)"
  );
  db_bind_int(&s2, ":rid", rid);
  db_exec(&s2);
  if( g.markPrivate ){
  if( g.markPrivate || isPrivate ){
    db_multi_exec("INSERT INTO private VALUES(%d)", rid);
  }else{
    db_static_prepare(&s3,
      "INSERT INTO unclustered VALUES(:rid)"
    );
    db_bind_int(&s3, ":rid", rid);
    db_exec(&s3);
  }
  bag_insert(&contentCache.missing, rid);
  db_end_transaction(0);
  return rid;
}


/*
** COMMAND:  test-content-put
** COMMAND: test-content-put
**
** Extract a blob from the database and write it into a file.
** Usage: %fossil test-content-put FILE
**
** Read the content of FILE and add it to the Blob table as a new
** artifact using a direct call to content_put().
*/
void test_content_put_cmd(void){
  int rid;
  Blob content;
  if( g.argc!=3 ) usage("FILENAME");
  db_must_be_within_tree();
  user_select();
  blob_read_from_file(&content, g.argv[2]);
  rid = content_put(&content, 0, 0);
  printf("inserted as record %d\n", rid);
  blob_read_from_file(&content, g.argv[2], ExtFILE);
  rid = content_put(&content);
  fossil_print("inserted as record %d\n", rid);
}

/*
** Make sure the content at rid is the original content and is not a
** delta.
*/
void content_undelta(int rid){
  if( findSrcid(rid)>0 ){
  if( delta_source_rid(rid)>0 ){
    Blob x;
    if( content_get(rid, &x) ){
      Stmt s;
      db_prepare(&s, "UPDATE blob SET content=:c, size=%d WHERE rid=%d",
                     blob_size(&x), rid);
      blob_compress(&x, &x);
      db_bind_blob(&s, ":c", &x);
      db_exec(&s);
      db_finalize(&s);
      blob_reset(&x);
      db_multi_exec("DELETE FROM delta WHERE rid=%d", rid);
    }
  }
}

/*
** COMMAND:  test-content-undelta
** COMMAND: test-content-undelta
**
** Make sure the content at RECORDID is not a delta
*/
void test_content_undelta_cmd(void){
  int rid;
  if( g.argc!=2 ) usage("RECORDID");
  if( g.argc!=3 ) usage("RECORDID");
  db_must_be_within_tree();
  rid = atoi(g.argv[2]);
  content_undelta(rid);
}

/*
** Return true if the given RID is marked as PRIVATE.
*/
int content_is_private(int rid){
  static Stmt s1;
  int rc;
  db_static_prepare(&s1,
    "SELECT 1 FROM private WHERE rid=:rid"
  );
  db_bind_int(&s1, ":rid", rid);
  rc = db_step(&s1);
  db_reset(&s1);
  return rc==SQLITE_ROW;  
  return rc==SQLITE_ROW;
}

/*
** Make sure an artifact is public.  
** Make sure an artifact is public.
*/
void content_make_public(int rid){
  static Stmt s1;
  db_static_prepare(&s1,
    "DELETE FROM private WHERE rid=:rid"
  );
  db_bind_int(&s1, ":rid", rid);
  db_exec(&s1);
}

/*
** Make sure an artifact is private
*/
void content_make_private(int rid){
  static Stmt s1;
  db_static_prepare(&s1,
    "INSERT OR IGNORE INTO private(rid) VALUES(:rid)"
  );
  db_bind_int(&s1, ":rid", rid);
  db_exec(&s1);
}

/*
** Change the storage of rid so that it is a delta of srcid.
** Try to change the storage of rid so that it is a delta from one
** of the artifacts given in aSrc[0]..aSrc[nSrc-1].  The aSrc[*] that
** gives the smallest delta is choosen.
**
** If rid is already a delta from some other place then no
** conversion occurs and this is a no-op unless force==1.
** conversion occurs and this is a no-op unless force==1.  If force==1,
** then nSrc must also be 1.
**
** If rid refers to a phantom, no delta is created.
**
** Never generate a delta that carries a private artifact into a public
** artifact.  Otherwise, when we go to send the public artifact on a
** sync operation, the other end of the sync will never be able to receive
** the source of the delta.  It is OK to delta private->private and
** public->private and public->public.  Just no private->public delta.
**
** If srcid is a delta that depends on rid, then srcid is
** converted to undeltaed text.
** If aSrc[bestSrc] is already a delta that depends on rid, then it is
** converted to undeltaed text before the aSrc[bestSrc]->rid delta is
** created, in order to prevent a delta loop.
**
** If either rid or srcid contain less than 50 bytes, or if the
** resulting delta does not achieve a compression of at least 25% on
** its own the rid is left untouched.
** If either rid or aSrc[i] contain less than 50 bytes, or if the
** resulting delta does not achieve a compression of at least 25%
** the rid is left untouched.
**
** Return the number of bytes by which the storage associated with rid
** is reduced.  A return of 0 means no new deltification occurs.
*/
void content_deltify(int rid, int srcid, int force){
int content_deltify(int rid, int *aSrc, int nSrc, int force){
  int s;
  Blob data, src, delta;
  Blob data;           /* Content of rid */
  Stmt s1, s2;
  if( srcid==rid ) return;
  Blob src;            /* Content of aSrc[i] */
  if( !force && findSrcid(rid)>0 ) return;
  if( content_is_private(srcid) && !content_is_private(rid) ){
    return;
  }
  Blob delta;          /* Delta from aSrc[i] to rid */
  Blob bestDelta;      /* Best delta seen so far */
  int bestSrc = 0;     /* Which aSrc is the source of the best delta */
  int rc = 0;          /* Value to return */
  int i;               /* Loop variable for aSrc[] */

  s = srcid;
  while( (s = findSrcid(s))>0 ){
    if( s==rid ){
  /*
  ** Historically this routine gracefully ignored the rid 0, but the
  ** addition of a call to content_is_available() in [188ffef2] caused
  ** rid 0 to trigger an assert via bag_find(). Rather than track down
  ** all such calls (e.g. the one via /technoteedit), we'll continue
  ** to gracefully ignore rid 0 here.
  */
  if( 0==rid ) return 0;
      content_undelta(srcid);
      break;
    }
  }
  content_get(srcid, &src);

  /* If rid is already a child (a delta) of some other artifact, return
  ** immediately if the force flags is false
  */
  if( !force && delta_source_rid(rid)>0 ) return 0;

  /* If rid refers to a phantom, skip deltification. */
  if( 0==content_is_available(rid) ) return 0;
  if( blob_size(&src)<50 ){
    blob_reset(&src);
    return;
  }

  /* Get the complete content of the object to be delta-ed.  If the size
  ** is less than 50 bytes, then there really is no point in trying to do
  ** a delta, so return immediately
  */
  content_get(rid, &data);
  if( blob_size(&data)<50 ){
    /* Do not try to create a delta for objects smaller than 50 bytes */
    blob_reset(&src);
    blob_reset(&data);
    return;
  }
  blob_delta_create(&src, &data, &delta);
  if( blob_size(&delta) < blob_size(&data)*0.75 ){
    blob_compress(&delta, &delta);
    blob_reset(&data);
    return 0;
  }
  blob_init(&bestDelta, 0, 0);

  /* Loop over all candidate delta sources */
  for(i=0; i<nSrc; i++){
    int srcid = aSrc[i];
    if( srcid==rid ) continue;
    if( content_is_private(srcid) && !content_is_private(rid) ) continue;

    /* Compute all ancestors of srcid and make sure rid is not one of them.
    ** If rid is an ancestor of srcid, then making rid a decendent of srcid
    ** would create a delta loop. */
    s = srcid;
    while( (s = delta_source_rid(s))>0 ){
      if( s==rid ){
        content_undelta(srcid);
        break;
      }
    }
    if( s!=0 ) continue;

    content_get(srcid, &src);
    if( blob_size(&src)<50 ){
      /* The source is smaller then 50 bytes, so don't bother trying to use it*/
      blob_reset(&src);
      continue;
    }
    blob_delta_create(&src, &data, &delta);
    if( blob_size(&delta) < blob_size(&data)*0.75
     && (bestSrc<=0 || blob_size(&delta)<blob_size(&bestDelta))
    ){
      /* This is the best delta seen so far.  Remember it */
      blob_reset(&bestDelta);
      bestDelta = delta;
      bestSrc = srcid;
    }else{
      /* This delta is not a candidate for becoming the new parent of rid */
      blob_reset(&delta);
    }
    blob_reset(&src);
  }

  /* If there is a winning candidate for the new parent of rid, then
  ** make that candidate the new parent now */
  if( bestSrc>0 ){
    Stmt s1, s2;  /* Statements used to create the delta */
    blob_compress(&bestDelta, &bestDelta);
    db_prepare(&s1, "UPDATE blob SET content=:data WHERE rid=%d", rid);
    db_prepare(&s2, "REPLACE INTO delta(rid,srcid)VALUES(%d,%d)", rid, srcid);
    db_bind_blob(&s1, ":data", &delta);
    db_prepare(&s2, "REPLACE INTO delta(rid,srcid)VALUES(%d,%d)", rid, bestSrc);
    db_bind_blob(&s1, ":data", &bestDelta);
    db_begin_transaction();
    rc = db_int(0, "SELECT octet_length(content) FROM blob WHERE rid=%d", rid);
    db_exec(&s1);
    db_exec(&s2);
    db_end_transaction(0);
    db_finalize(&s1);
    db_finalize(&s2);
    verify_before_commit(rid);
    rc -= blob_size(&bestDelta);
  }
  blob_reset(&src);
  blob_reset(&data);
  blob_reset(&bestDelta);
  return rc;
}

/*
** COMMAND: test-content-deltify
**
** Usage:  %fossil RID SRCID SRCID ...  [-force]
**
** Convert the content at RID into a delta one of the from SRCIDs.
*/
void test_content_deltify_cmd(void){
  int nSrc;
  int *aSrc;
  int i;
  int bForce = find_option("force",0,0)!=0;
  if( g.argc<3 ) usage("[--force] RID SRCID SRCID...");
  aSrc = fossil_malloc( (g.argc-2)*sizeof(aSrc[0]) );
  nSrc = 0;
  for(i=2; i<g.argc; i++) aSrc[nSrc++] = atoi(g.argv[i]);
  db_must_be_within_tree();
  content_deltify(atoi(g.argv[2]), aSrc, nSrc, bForce);
}

/*
** Return true if Blob p looks like it might be a parsable control artifact.
*/
static int looks_like_control_artifact(Blob *p){
  const char *z = blob_buffer(p);
  int n = blob_size(p);
  if( n<10 ) return 0;
  if( strncmp(z, "-----BEGIN PGP SIGNED MESSAGE-----", 34)==0 ) return 1;
  if( z[0]<'A' || z[0]>'Z' || z[1]!=' ' || z[0]=='I' ) return 0;
  if( z[n-1]!='\n' ) return 0;
  return 1;
}

/*
** COMMAND: test-integrity
**
** Verify that all content can be extracted from the BLOB table correctly.
** If the BLOB table is correct, then the repository can always be
** successfully reconstructed using "fossil rebuild".
**
** Options:
**    -d|--db-only       Run "PRAGMA integrity_check" on the database only.
**                       No other validation is performed.
**    --parse            Parse all manifests, wikis, tickets, events, and
**                       so forth, reporting any errors found.
**    -q|--quick         Run "PRAGMA quick_check" on the database only.
**                       No other validation is performed.
*/
void test_integrity(void){
  Stmt q;
  Blob content;
  int n1 = 0;
  int n2 = 0;
  int nErr = 0;
  int total;
  int nCA = 0;
  int anCA[10];
  int bParse = find_option("parse",0,0)!=0;
  int bDbOnly = find_option("db-only","d",0)!=0;
  int bQuick = find_option("quick","q",0)!=0;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 2);
  if( bDbOnly || bQuick ){
    const char *zType = bQuick ? "quick" : "integrity";
    char *zRes;
    zRes = db_text(0,"PRAGMA repository.%s_check", zType/*safe-for-%s*/);
    if( fossil_strcmp(zRes,"ok")!=0 ){
      fossil_print("%s_check failed!\n", zType);
      exit(1);
    }else{
      fossil_print("ok\n");
    }
    return;
  }
  memset(anCA, 0, sizeof(anCA));

  /* Make sure no public artifact is a delta from a private artifact */
  db_prepare(&q,
    "SELECT "
    "   rid, (SELECT uuid FROM blob WHERE rid=delta.rid),"
    "   srcid, (SELECT uuid FROM blob WHERE rid=delta.srcid)"
    "  FROM delta"
    " WHERE srcid in private AND rid NOT IN private"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zId = db_column_text(&q, 1);
    int srcid = db_column_int(&q, 2);
    const char *zSrc = db_column_text(&q, 3);
    fossil_print(
      "public artifact %S (%d) is a delta from private artifact %S (%d)\n",
      zId, rid, zSrc, srcid
    );
    nErr++;
  }
  db_finalize(&q);

  db_prepare(&q, "SELECT rid, uuid, size FROM blob ORDER BY rid");
  total = db_int(0, "SELECT max(rid) FROM blob");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    int nUuid = db_column_bytes(&q, 1);
    int size = db_column_int(&q, 2);
    n1++;
    fossil_print("  %d/%d\r", n1, total);
    fflush(stdout);
    if( size<0 ){
      fossil_print("skip phantom %d %s\n", rid, zUuid);
      continue;  /* Ignore phantoms */
    }
    content_get(rid, &content);
    if( (int)blob_size(&content)!=size ){
      fossil_print("size mismatch on artifact %d: wanted %d but got %d\n",
                     rid, size, blob_size(&content));
      nErr++;
    }
    if( !hname_verify_hash(&content, zUuid, nUuid) ){
      fossil_print("wrong hash on artifact %d\n",rid);
      nErr++;
    }
    if( bParse && looks_like_control_artifact(&content) ){
      Blob err;
      int i, n;
      char *z;
      Manifest *p;
      char zFirstLine[400];
      blob_zero(&err);

      z = blob_buffer(&content);
      n = blob_size(&content);
      for(i=0; i<n && z[i] && z[i]!='\n' && i<(int)sizeof(zFirstLine)-1; i++){}
      memcpy(zFirstLine, z, i);
      zFirstLine[i] = 0;
      p = manifest_parse(&content, 0, &err);
      if( p==0 ){
        fossil_print("manifest_parse failed for %s:\n%s\n",
               zUuid, blob_str(&err));
        if( strncmp(blob_str(&err), "line 1:", 7)==0 ){
          fossil_print("\"%s\"\n", zFirstLine);
        }
      }else{
        anCA[p->type]++;
        manifest_destroy(p);
        nCA++;
      }
      blob_reset(&err);
    }else{
  blob_reset(&delta);
      blob_reset(&content);
    }
    n2++;
  }
  db_finalize(&q);
  fossil_print("%d non-phantom blobs (out of %d total) checked:  %d errors\n",
               n2, n1, nErr);
  if( bParse ){
    static const char *const azType[] = { 0, "manifest", "cluster",
        "control", "wiki", "ticket", "attachment", "event" };
    int i;
    fossil_print("%d total control artifacts\n", nCA);
    for(i=1; i<count(azType); i++){
      if( anCA[i] ) fossil_print("  %d %ss\n", anCA[i], azType[i]);
    }
  }
  fossil_print("low-level database integrity-check: ");
  fossil_print("%s\n", db_text(0, "PRAGMA integrity_check(10)"));
}

/*
** COMMAND: test-orphans
**
** Search the repository for orphaned artifacts.
*/
void test_orphans(void){
  Stmt q;
  int cnt = 0;

  db_find_and_open_repository(0, 0);
  db_multi_exec(
    "CREATE TEMP TABLE used(id INTEGER PRIMARY KEY ON CONFLICT IGNORE);"
    "INSERT INTO used SELECT mid FROM mlink;"  /* Manifests */
    "INSERT INTO used SELECT fid FROM mlink;"  /* Files */
    "INSERT INTO used SELECT srcid FROM tagxref WHERE srcid>0;" /* Tags */
    "INSERT INTO used SELECT rid FROM tagxref;" /* Wiki & tickets */
    "INSERT INTO used SELECT rid FROM attachment JOIN blob ON src=uuid;"
    "INSERT INTO used SELECT attachid FROM attachment;"
    "INSERT INTO used SELECT objid FROM event;"
  );
  db_prepare(&q, "SELECT rid, uuid, size FROM blob WHERE rid NOT IN used");
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("%7d %s size: %d\n",
      db_column_int(&q, 0),
      db_column_text(&q, 1),
      db_column_int(&q,2));
    cnt++;
  }
  db_finalize(&q);
  fossil_print("%d orphans\n", cnt);
}

/* Allowed flags for check_exists */
#define MISSING_SHUNNED   0x0001    /* Do not report shunned artifacts */

/* This is a helper routine for test-artifacts.
**
** Check to see that the artifact hash referenced by zUuid exists in the
** repository.  If it does, return 0.  If it does not, generate an error
** message and return 1.
*/
static int check_exists(
  const char *zUuid,     /* Hash of the artifact we are checking for */
  unsigned flags,        /* Flags */
  Manifest *p,           /* The control artifact that references zUuid */
  const char *zRole,     /* Role of zUuid in p */
  const char *zDetail    /* Additional information, such as a filename */
){
  static Stmt q;
  int rc = 0;

  db_static_prepare(&q, "SELECT size FROM blob WHERE uuid=:uuid");
  if( zUuid==0 || zUuid[0]==0 ) return 0;
  db_bind_text(&q, ":uuid", zUuid);
  if( db_step(&q)==SQLITE_ROW ){
    int size = db_column_int(&q, 0);
    if( size<0 ) rc = 2;
  }else{
    rc = 1;
  }
  db_reset(&q);
  if( rc ){
    const char *zCFType = "control artifact";
    char *zSrc;
    char *zDate;
    const char *zErrType = "MISSING";
    if( db_exists("SELECT 1 FROM shun WHERE uuid=%Q", zUuid) ){
      if( flags & MISSING_SHUNNED ) return 0;
      zErrType = "SHUNNED";
    }
    switch( p->type ){
      case CFTYPE_MANIFEST:   zCFType = "check-in";    break;
      case CFTYPE_CLUSTER:    zCFType = "cluster";     break;
      case CFTYPE_CONTROL:    zCFType = "tag";         break;
      case CFTYPE_WIKI:       zCFType = "wiki";        break;
      case CFTYPE_TICKET:     zCFType = "ticket";      break;
      case CFTYPE_ATTACHMENT: zCFType = "attachment";  break;
      case CFTYPE_EVENT:      zCFType = "event";       break;
    }
    zSrc = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", p->rid);
    if( p->rDate>0.0 ){
      zDate = db_text(0, "SELECT datetime(%.17g)", p->rDate);
    }else{
      zDate = db_text(0,
         "SELECT datetime(rcvfrom.mtime)"
         "  FROM blob, rcvfrom"
         " WHERE blob.rcvid=rcvfrom.rcvid"
         "   AND blob.rid=%d", p->rid);
    }
    fossil_print("%s: %s\n         %s %s %S (%d) %s\n",
                  zErrType, zUuid, zRole, zCFType, zSrc, p->rid, zDate);
    if( zDetail && zDetail[0] ){
      fossil_print("         %s\n", zDetail);
    }
    fossil_free(zSrc);
    fossil_free(zDate);
    rc = 1;
  }
  return rc;
}

/*
** COMMAND: test-missing
**
** Usage: %fossil test-missing
**
** Look at every artifact in the repository and verify that
** all references are satisfied.  Report any referenced artifacts
** that are missing or shunned.
**
** Options:
**    --notshunned          Do not report shunned artifacts
**    --quiet               Only show output if there are errors
*/
void test_missing(void){
  Stmt q;
  Blob content;
  int nErr = 0;
  int nArtifact = 0;
  int i;
  Manifest *p;
  unsigned flags = 0;
  int quietFlag;

  if( find_option("notshunned", 0, 0)!=0 ) flags |= MISSING_SHUNNED;
  quietFlag = find_option("quiet","q",0)!=0;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  db_prepare(&q,
     "SELECT mid FROM mlink UNION "
     "SELECT srcid FROM tagxref WHERE srcid>0 UNION "
     "SELECT rid FROM tagxref UNION "
     "SELECT rid FROM attachment JOIN blob ON src=uuid UNION "
     "SELECT objid FROM event");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    content_get(rid, &content);
    p = manifest_parse(&content, rid, 0);
    if( p ){
      nArtifact++;
      nErr += check_exists(p->zBaseline, flags, p, "baseline of", 0);
      nErr += check_exists(p->zAttachSrc, flags, p, "file of", 0);
      for(i=0; i<p->nFile; i++){
        nErr += check_exists(p->aFile[i].zUuid, flags, p, "file of",
                             p->aFile[i].zName);
      }
      for(i=0; i<p->nParent; i++){
        nErr += check_exists(p->azParent[i], flags, p, "parent of", 0);
      }
      for(i=0; i<p->nCherrypick; i++){
        nErr +=  check_exists(p->aCherrypick[i].zCPTarget+1, flags, p,
                              "cherry-pick target of", 0);
        nErr +=  check_exists(p->aCherrypick[i].zCPBase, flags, p,
                              "cherry-pick baseline of", 0);
      }
      for(i=0; i<p->nCChild; i++){
        nErr += check_exists(p->azCChild[i], flags, p, "in", 0);
      }
      for(i=0; i<p->nTag; i++){
        nErr += check_exists(p->aTag[i].zUuid, flags, p, "target of", 0);
      }
      manifest_destroy(p);
    }
  }
  db_finalize(&q);
  if( nErr>0 || quietFlag==0 ){
    fossil_print("%d missing or shunned references in %d control artifacts\n",
                 nErr, nArtifact);
  }
}

/*
** COMMAND:  test-content-deltify
** COMMAND: test-content-erase
**
** Convert the content at RID into a delta from SRCID.
** Usage: %fossil test-content-erase RID ....
**
** Remove all traces of one or more artifacts from the local repository.
**
** WARNING: This command destroys data and can cause you to lose work.
** Make sure you have a backup copy before using this command!
**
** WARNING: You must run "fossil rebuild" after this command to rebuild
** the metadata.
**
** Note that the arguments are the integer raw RID values from the BLOB table,
** not artifact hashes or labels.
*/
void test_content_deltify_cmd(void){
  if( g.argc!=5 ) usage("RID SRCID FORCE");
  db_must_be_within_tree();
  content_deltify(atoi(g.argv[2]), atoi(g.argv[3]), atoi(g.argv[4]));
}
void test_content_erase(void){
  int i;
  Blob x;
  char c;
  Stmt q;
  prompt_user("This command erases information from the repository and\n"
              "might irrecoverably damage the repository.  Make sure you\n"
              "have a backup copy!\n"
              "Continue? (y/N)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  if( c!='y' && c!='Y' ) return;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  db_begin_transaction();
  db_prepare(&q, "SELECT rid FROM delta WHERE srcid=:rid");
  for(i=2; i<g.argc; i++){
    int rid = atoi(g.argv[i]);
    fossil_print("Erasing artifact %d (%s)\n",
                 rid, db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid));
    db_bind_int(&q, ":rid", rid);
    while( db_step(&q)==SQLITE_ROW ){
      content_undelta(db_column_int(&q,0));
    }
    db_reset(&q);
    db_multi_exec("DELETE FROM blob WHERE rid=%d", rid);
    db_multi_exec("DELETE FROM delta WHERE rid=%d", rid);
  }
  db_finalize(&q);
  db_end_transaction(0);
}
Added src/cookies.c.

















































































































































































































































































































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/*
** Copyright (c) 2017 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage a cookie that stores user-specific
** display preferences for the web interface.
**
** cookie_parse(void);
**
**    Read and parse the display preferences cookie.
**
** cookie_read_parameter(zQP, zPName);
**
**    If query parameter zQP does not exist but zPName does exist in
**    the parsed cookie, then initialize zQP to hold the same value
**    as the zPName element in the parsed cookie.
**
** cookie_write_parameter(zQP, zPName, zDefault);
**
**    If query parameter zQP exists and if it has a different value from
**    the zPName parameter in the parsed cookie, then replace the value of
**    zPName with the value of zQP.  If zQP exists but zPName does not
**    exist, then zPName is created.  If zQP does not exist or if it has
**    the same value as zPName, then this routine is a no-op.
**
** cookie_link_parameter(zQP, zPName, zDefault);
**
**    This does both cookie_read_parameter() and cookie_write_parameter()
**    all at once.
**
** cookie_render();
**
**    If any prior calls to cookie_write_parameter() have changed the
**    value of the user preferences cookie, this routine will cause the
**    new cookie value to be included in the HTTP header for the current
**    web page.  This routine is a destructor for this module and should
**    be called once.
**
** char *cookie_value(zPName, zDefault);
**
**    Look up the value of a cookie parameter zPName.  Return zDefault if
**    there is no display preferences cookie or if zPName does not exist.
*/
#include "config.h"
#include "cookies.h"
#include <assert.h>
#include <string.h>

#if INTERFACE
/* the standard name of the display settings cookie for fossil */
# define DISPLAY_SETTINGS_COOKIE    "fossil_display_settings"
#endif


/*
** State information private to this module
*/
#define COOKIE_NPARAM  10
static struct {
  char *zCookieValue;         /* Value of the user preferences cookie */
  int bChanged;               /* True if any value has changed */
  int bIsInit;                /* True after initialization */
  int nParam;                 /* Number of parameters in the cookie */
  struct {
    const char *zPName;         /* Name of a parameter */
    char *zPValue;              /* Value of that parameter */
  } aParam[COOKIE_NPARAM];
} cookies;

/* Initialize this module by parsing the content of the cookie named
** by DISPLAY_SETTINGS_COOKIE
*/
void cookie_parse(void){
  char *z;
  if( cookies.bIsInit ) return;
  z = (char*)P(DISPLAY_SETTINGS_COOKIE);
  if( z==0 ) z = "";
  cookies.zCookieValue = z = mprintf("%s", z);
  cookies.bIsInit = 1;
  while( cookies.nParam<COOKIE_NPARAM ){
    while( fossil_isspace(z[0]) ) z++;
    if( z[0]==0 ) break;
    cookies.aParam[cookies.nParam].zPName = z;
    while( *z && *z!='=' && *z!=',' ){ z++; }
    if( *z=='=' ){
      *z = 0;
      z++;
      cookies.aParam[cookies.nParam].zPValue = z;
      while( *z && *z!=',' ){ z++; }
      if( *z ){
        *z = 0;
        z++;
      }
      dehttpize(cookies.aParam[cookies.nParam].zPValue);
    }else{
      if( *z ){ *z++ = 0; }
      cookies.aParam[cookies.nParam].zPValue = "";
    }
    cookies.nParam++;
  }
}

#define COOKIE_READ  1
#define COOKIE_WRITE 2
static void cookie_readwrite(
  const char *zQP,        /* Name of the query parameter */
  const char *zPName,     /* Name of the cooking setting */
  const char *zDflt,      /* Default value for the query parameter */
  int flags               /* READ or WRITE or both */
){
  const char *zQVal = P(zQP);
  int i;
  cookie_parse();
  for(i=0; i<cookies.nParam && strcmp(zPName,cookies.aParam[i].zPName); i++){}
  if( zQVal==0 && (flags & COOKIE_READ)!=0 && i<cookies.nParam ){
    cgi_set_parameter_nocopy(zQP, cookies.aParam[i].zPValue, 1);
    return;
  }
  if( zQVal==0 ){
    zQVal = zDflt;
    if( flags & COOKIE_WRITE ) cgi_set_parameter_nocopy(zQP, zQVal, 1);
  }
  if( (flags & COOKIE_WRITE)!=0
   && i<COOKIE_NPARAM
   && (i==cookies.nParam || strcmp(zQVal, cookies.aParam[i].zPValue))
  ){
    if( i==cookies.nParam ){
      cookies.aParam[i].zPName = zPName;
      cookies.nParam++;
    }
    cookies.aParam[i].zPValue = (char*)zQVal;
    cookies.bChanged = 1;
  }
}

/* If query parameter zQP is missing, initialize it using the zPName
** value from the user preferences cookie
*/
void cookie_read_parameter(const char *zQP, const char *zPName){
  cookie_readwrite(zQP, zPName, 0, COOKIE_READ);
}

/* Update the zPName value of the user preference cookie to match
** the value of query parameter zQP.
*/
void cookie_write_parameter(
  const char *zQP,
  const char *zPName,
  const char *zDflt
){
  cookie_readwrite(zQP, zPName, zDflt, COOKIE_WRITE);
}

/* Use the zPName user preference value as a default for zQP and record
** any changes to the zQP value back into the cookie.
*/
void cookie_link_parameter(
  const char *zQP,       /* The query parameter */
  const char *zPName,    /* The name of the cookie value */
  const char *zDflt      /* Default value for the parameter */
){
  cookie_readwrite(zQP, zPName, zDflt, COOKIE_READ|COOKIE_WRITE);
}

/* Update the user preferences cookie, if necessary, and shut down
** this module. The cookie is only emitted if its value has actually
** changed since the request started and the "udc" (Update Display
** Cookie) URL argument was provided.
**
** Historical note: from 2021-03-02 [71a2d68a7a113e7c] until
** 2023-01-16, the udc was not observed (it had been prior to that),
** and that led to the unfortunate side effect that a timeline link
** from the /reports page would end up persistently setting a user's
** timeline length preference to the number of items in that
** report. In a /chat discussion it was agreed that updating the
** cookie requires explicit opt-in via the udc argument or ?skin=...,
** which implies udc.
*/
void cookie_render(void){
  if( cookies.bChanged && P("udc")!=0 ){
    Blob new;
    int i;
    blob_init(&new, 0, 0);
    for(i=0;i<cookies.nParam;i++){
      if( i>0 ) blob_append(&new, ",", 1);
      blob_appendf(&new, "%s=%T",
          cookies.aParam[i].zPName, cookies.aParam[i].zPValue);
    }
    cgi_set_cookie(DISPLAY_SETTINGS_COOKIE, blob_str(&new), 0, 31536000);
  }
  cookies.bIsInit = 0;
}

/* Return the value of a preference cookie.
*/
const char *cookie_value(const char *zPName, const char *zDefault){
  int i;
  assert( zPName!=0 );
  cookie_parse();
  for(i=0; i<cookies.nParam && strcmp(zPName,cookies.aParam[i].zPName); i++){}
  return i<cookies.nParam ? cookies.aParam[i].zPValue : zDefault;
}

/* Return the number of characters of hex in the prefix to the
** given string.
*/
static int hex_prefix_length(const char *z){
  int i;
  for(i=0; fossil_isXdigit(z[i]); i++){}
  return i;
}

/*
** WEBPAGE: cookies
**
** Show all cookies associated with Fossil.  This shows the text of the
** login cookie and is hence dangerous if an adversary is looking over
** your shoulder and is able to read and reproduce that cookie.
**
** WEBPAGE: fdscookie
**
** Show the current display settings contained in the
** "fossil_display_settings" cookie.
*/
void cookie_page(void){
  int i;
  int nCookie = 0;
  const char *zName = 0;
  const char *zValue = 0;
  const char *zLoginCookie = login_cookie_name();
  int isQP = 0;
  int bFDSonly = strstr(g.zPath, "fdscookie")!=0;
  cookie_parse();
  if( bFDSonly ){
    style_header("Display Preferences Cookie");
  }else{
    style_header("All Cookies");
  }
  @ <form method="POST">
  @ <ol>
  for(i=0; cgi_param_info(i, &zName, &zValue, &isQP); i++){
    char *zDel;
    if( isQP ) continue;
    if( fossil_isupper(zName[0]) ) continue;
    if( bFDSonly && strcmp(zName, "fossil_display_settings")!=0 ) continue;
    zDel = mprintf("del%s",zName);
    if( P(zDel)!=0 ){
      cgi_set_cookie(zName, "", 0, -1);
      cgi_redirect(g.zPath);
    }
    nCookie++;
    @ <li><p><b>%h(zName)</b>: %h(zValue)
    @ <input type="submit" name="%h(zDel)" value="Delete">
    if( fossil_strcmp(zName, DISPLAY_SETTINGS_COOKIE)==0  && cookies.nParam>0 ){
      int j;
      @ <p>This cookie remembers your Fossil display preferences.
      @ <ul>
      for(j=0; j<cookies.nParam; j++){
        @ <li>%h(cookies.aParam[j].zPName): "%h(cookies.aParam[j].zPValue)"
      }
      @ </ul>
    }else
    if( fossil_strcmp(zName, zLoginCookie)==0 ){
      @ <p>This is your login cookie.  If you delete this cookie, you will
      @ be logged out.
    }else
    if( fossil_strncmp(zName, "fossil-", 7)==0
     && strlen(zName)==23
     && hex_prefix_length(&zName[7])==16
     && hex_prefix_length(zValue)>24
    ){
      @ <p>This appears to be a login cookie for another Fossil repository
      @ in the same website.
    }
    else {
      @ <p>This cookie was not generated by Fossil.  It might be something
      @ from another program on the same website.
    }
    fossil_free(zDel);
  }
  @ </ol>
  @ </form>
  if( nCookie==0 ){
    if( bFDSonly ){
      @ <p><i>Your browser is not holding a "fossil_display_setting" cookie
      @ for this website</i></p>
    }else{
      @ <p><i>Your browser is not holding any cookies for this website</i></p>
    }
  }
  style_finish_page();
}
Added src/copybtn.js.































































































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/* Manage "Copy Buttons" linked to target elements, to copy the text (or, parts
** thereof) of the target elements to the clipboard.
**
** Newly created buttons are <span> elements with an SVG background icon,
** defined by the "copy-button" class in the default CSS style sheet, and are
** assigned the element ID "copy-<idTarget>".
**
** To simplify customization, the only properties modified for HTML-defined
** buttons are the "onclick" handler, and the "transition" and "opacity" styles
** (used for animation).
**
** For HTML-defined buttons, either initCopyButtonById(), or initCopyButton(),
** needs to be called to attach the "onclick" handler (done automatically from
** a handler attached to the "DOMContentLoaded" event).
**
** The initialization functions do not overwrite the "data-copytarget" and
** "data-copylength" attributes with empty or null values for <idTarget> and
** <cchLength>, respectively. Set <cchLength> to "-1" to explicitly remove the
** previous copy length limit.
**
** HTML snippet for statically created buttons:
**
**    <span class="copy-button" id="copy-<idTarget>"
**      data-copytarget="<idTarget>" data-copylength="<cchLength>"></span>
*/
function makeCopyButton(idTarget,bFlipped,cchLength){
  var elButton = document.createElement("span");
  elButton.className = "copy-button";
  if( bFlipped ) elButton.className += " copy-button-flipped";
  elButton.id = "copy-" + idTarget;
  initCopyButton(elButton,idTarget,cchLength);
  return elButton;
}
function initCopyButtonById(idButton,idTarget,cchLength){
  idButton = idButton || "copy-" + idTarget;
  var elButton = document.getElementById(idButton);
  if( elButton ) initCopyButton(elButton,idTarget,cchLength);
  return elButton;
}
function initCopyButton(elButton,idTarget,cchLength){
  elButton.style.transition = "";
  elButton.style.opacity = 1;
  if( idTarget ) elButton.setAttribute("data-copytarget",idTarget);
  if( cchLength ) elButton.setAttribute("data-copylength",cchLength);
  elButton.onclick = clickCopyButton;
  return elButton;
}
setTimeout(function(){
  var elButtons = document.getElementsByClassName("copy-button");
  for ( var i=0; i<elButtons.length; i++ ){
    initCopyButton(elButtons[i],0,0);
  }
},1);
/* The onclick handler for the "Copy Button". */
function clickCopyButton(e){
  e.preventDefault();   /* Mandatory for <a> and <button>. */
  e.stopPropagation();
  if( this.getAttribute("data-copylocked") ) return;
  this.setAttribute("data-copylocked","1");
  this.style.transition = "opacity 400ms ease-in-out";
  this.style.opacity = 0;
  var idTarget = this.getAttribute("data-copytarget");
  var elTarget = document.getElementById(idTarget);
  if( elTarget ){
    var text = elTarget.innerText.replace(/^\s+|\s+$/g,"");
    var cchLength = parseInt(this.getAttribute("data-copylength"));
    if( !isNaN(cchLength) && cchLength>0 ){
      text = text.slice(0,cchLength);   /* Assume single-byte chars. */
    }
    copyTextToClipboard(text);
  }
  setTimeout(function(){
    this.style.transition = "";
    this.style.opacity = 1;
    this.removeAttribute("data-copylocked");
  }.bind(this),400);
}
/* Create a temporary <textarea> element and copy the contents to clipboard. */
function copyTextToClipboard(text){
  if( window.clipboardData && window.clipboardData.setData ){
    window.clipboardData.setData("Text",text);
  }else{
    var elTextarea = document.createElement("textarea");
    elTextarea.style.position = "fixed";
    elTextarea.value = text;
    document.body.appendChild(elTextarea);
    elTextarea.select();
    try{
      document.execCommand("copy");
    }catch(err){
    }finally{
      document.body.removeChild(elTextarea);
    }
  }
}
Added src/cygsup.h.




























































































































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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains preprocessor directives used to help integrate with the
** Cygwin runtime and build environment.  The intent of this file is to keep
** the Cygwin-specific preprocessor directives together.
*/

#if defined(__CYGWIN__) && !defined(CYGSUP_H)
#define CYGSUP_H

/*
*******************************************************************************
** Include any Cygwin-specific headers here.                                 **
*******************************************************************************
*/

#include <wchar.h>
#include <sys/cygwin.h>

/*
*******************************************************************************
** Define any Cygwin-specific preprocessor macros here.  All macros defined in
** this section should be wrapped with #ifndef, in order to allow them to be
** externally overridden.
*******************************************************************************
*/

#ifndef CP_UTF8
#  define CP_UTF8            65001
#endif

#ifndef WINBASEAPI
#  define WINBASEAPI         __declspec(dllimport)
#endif

#ifndef WINADVAPI
#  define WINADVAPI          __declspec(dllimport)
#endif

#ifndef SHSTDAPI
#  define SHSTDAPI           __declspec(dllimport)
#endif

#ifndef STDAPI
#  define STDAPI             __stdcall
#endif

#ifndef WINAPI
#  define WINAPI             __stdcall
#endif

/*
*******************************************************************************
** Declare any Cygwin-specific Win32 or other APIs here.  Functions declared in
** this section should use the built-in ANSI C types in order to make sure this
** header file continues to work as a self-contained unit.
**
** On Cygwin64, "long" is 64-bit but in Win64 it's 32-bit.  That's why in the
** signatures below "long" should not be used.  They now use "int" instead.
*******************************************************************************
*/

WINADVAPI extern WINAPI int RegOpenKeyExW(
    void *,          /* HKEY */
    const wchar_t *, /* LPCWSTR */
    unsigned int,    /* DWORD */
    unsigned int,    /* REGSAM */
    void *           /* PHKEY */
    );

WINADVAPI extern WINAPI int RegQueryValueExW(
    void *,          /* HKEY */
    const wchar_t *, /* LPCWSTR */
    unsigned int *,  /* LPDWORD */
    unsigned int *,  /* LPDWORD */
    unsigned char *, /* LPBYTE */
    unsigned int *   /* LPDWORD */
    );

SHSTDAPI extern STDAPI void *ShellExecuteW(
    void *,          /* HWND */
    const wchar_t *, /* LPCWSTR */
    const wchar_t *, /* LPCWSTR */
    const wchar_t *, /* LPCWSTR */
    const wchar_t *, /* LPCWSTR */
    int              /* INT */
    );

WINBASEAPI extern WINAPI int WideCharToMultiByte(
    unsigned int,    /* UINT */
    unsigned int,    /* DWORD */
    const wchar_t *, /* LPCWSTR */
    int,             /* int */
    char *,          /* LPSTR */
    int,             /* int */
    const char *,    /* LPCSTR */
    int *            /* LPBOOL */
    );

WINBASEAPI extern WINAPI int MultiByteToWideChar(
    unsigned int,    /* UINT */
    unsigned int,    /* DWORD */
    const char *,    /* LPCSTR */
    int,             /* int */
    wchar_t *,       /* LPWSTR */
    int              /* int */
    );

#endif /* defined(__CYGWIN__) && !defined(CYGSUP_H) */
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Code for interfacing to the various databases.
**
** There are three separate database files that fossil interacts
** with:
**
**    (1)  The "user" database in ~/.fossil
**    (1)  The "configdb" database in ~/.fossil or ~/.config/fossil.db
**         or in %LOCALAPPDATA%/_fossil
**
**    (2)  The "repository" database
**
**    (3)  A local checkout database named "_FOSSIL_" or ".fos"
**    (3)  A local check-out database named "_FOSSIL_" or ".fslckout"
**         and located at the root of the local copy of the source tree.
**
*/
#include "config.h"
#if defined(_WIN32)
#  if USE_SEE
#    include <windows.h>
#    define GETPID (int)GetCurrentProcessId
#  endif
#else
#  include <pwd.h>
#  if USE_SEE
#    define GETPID getpid
#  endif
#endif
#if USE_SEE && !defined(SQLITE_HAS_CODEC)
#  define SQLITE_HAS_CODEC
#endif
#if USE_SEE && defined(__linux__)
#  include <sys/uio.h>
#endif
#include <sqlite3.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>

/* BUGBUG: This (PID_T) does not work inside of INTERFACE block. */
#if USE_SEE
#if defined(_WIN32)
typedef DWORD PID_T;
#else
typedef pid_t PID_T;
#endif
#endif

#include "db.h"

#if INTERFACE
/*
** Type definitions used for handling the saved encryption key for SEE.
*/
#if !defined(_WIN32)
typedef void *LPVOID;
typedef size_t SIZE_T;
#endif

/*
** Operations for db_maybe_handle_saved_encryption_key_for_process, et al.
*/
#define SEE_KEY_READ  ((int)0)
#define SEE_KEY_WRITE ((int)1)
#define SEE_KEY_ZERO  ((int)2)

/*
** An single SQL statement is represented as an instance of the following
** structure.
*/
struct Stmt {
  Blob sql;               /* The SQL for this statement */
  sqlite3_stmt *pStmt;    /* The results of sqlite3_prepare() */
  sqlite3_stmt *pStmt;    /* The results of sqlite3_prepare_v2() */
  Stmt *pNext, *pPrev;    /* List of all unfinalized statements */
  int nStep;              /* Number of sqlite3_step() calls */
  int rc;                 /* Error from db_vprepare() */
};

/*
** Copy this to initialize a Stmt object to a clean/empty state. This
** is useful to help avoid assertions when performing cleanup in some
** error handling cases.
*/
#define empty_Stmt_m {BLOB_INITIALIZER,NULL, NULL, NULL, 0, 0}
#endif /* INTERFACE */
const struct Stmt empty_Stmt = empty_Stmt_m;

/*
** Call this routine when a database error occurs.
** This routine throws a fatal error.  It does not return.
*/
static void db_err(const char *zFormat, ...){
  va_list ap;
  char *z;
  static const char zRebuildMsg[] = 
      "If you have recently updated your fossil executable, you might\n"
      "need to run \"fossil all rebuild\" to bring the repository\n"
      "schemas up to date.\n";
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
#ifdef FOSSIL_ENABLE_JSON
  if( g.json.isJsonMode!=0 ){
    /*
    ** Avoid calling into the JSON support subsystem if it
    ** has not yet been initialized, e.g. early SQLite log
    ** messages, etc.
    */
    json_bootstrap_early();
    json_err( 0, z, 1 );
  }
  else
#endif /* FOSSIL_ENABLE_JSON */
  if( g.xferPanic ){
  if( g.xferPanic && g.cgiOutput==1 ){
    cgi_reset_content();
    @ error Database\serror:\s%F(z)
    cgi_reply();
  }
  if( g.cgiOutput ){
    g.cgiOutput = 0;
    cgi_printf("<h1>Database Error</h1>\n"
  fossil_fatal("Database error: %s", z);
               "<pre>%h</pre><p>%s</p>", z, zRebuildMsg);
    cgi_reply();
  }else{
    fprintf(stderr, "%s: %s\n\n%s", g.argv[0], z, zRebuildMsg);
  }
  db_force_rollback();
  exit(1);
}
}

/*
** Check a result code.  If it is not SQLITE_OK, print the
** corresponding error message and exit.
*/
static void db_check_result(int rc, Stmt *pStmt){
  if( rc!=SQLITE_OK ){
    db_err("SQL error (%d,%d: %s) while running [%s]",
       rc, sqlite3_extended_errcode(g.db),
       sqlite3_errmsg(g.db), blob_str(&pStmt->sql));
  }
}

/*
** All static variable that a used by only this file are gathered into
** the following structure.
*/
static struct DbLocalData {
  unsigned protectMask;     /* Prevent changes to database */
  int nBegin;               /* Nesting depth of BEGIN */
  int doRollback;           /* True to force a rollback */
  int nCommitHook;          /* Number of commit hooks */
  int wrTxn;                /* Outer-most TNX is a write */
  Stmt *pAllStmt;           /* List of all unfinalized statements */
  int nPrepare;             /* Number of calls to sqlite3_prepare_v2() */
  int nDeleteOnFail;        /* Number of entries in azDeleteOnFail[] */
  struct sCommitHook {
    int (*xHook)(void);         /* Functions to call at db_end_transaction() */
    int sequence;               /* Call functions in sequence order */
  } aHook[6];
  char *azDeleteOnFail[3];  /* Files to delete on a failure */
  char *azBeforeCommit[5];  /* Commands to run prior to COMMIT */
  int nBeforeCommit;        /* Number of entries in azBeforeCommit */
  int nPriorChanges;        /* sqlite3_total_changes() at transaction start */
  const char *zStartFile;   /* File in which transaction was started */
  int iStartLine;           /* Line of zStartFile where transaction started */
  int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
  void *pAuthArg;           /* Argument to the authorizer */
  const char *zAuthName;    /* Name of the authorizer */
  int bProtectTriggers;     /* True if protection triggers already exist */
  int nProtect;             /* Slots of aProtect used */
  unsigned aProtect[12];    /* Saved values of protectMask */
} db = {
  PROTECT_USER|PROTECT_CONFIG|PROTECT_BASELINE,  /* protectMask */
  0, 0, 0, 0, 0, 0, 0, {{0}}, {0}, {0}, 0, 0, 0, 0, 0, 0, 0, 0, 0, {0}};

/*
** Arrange for the given file to be deleted on a failure.
*/
void db_delete_on_failure(const char *zFilename){
  assert( db.nDeleteOnFail<count(db.azDeleteOnFail) );
  if( zFilename==0 ) return;
  db.azDeleteOnFail[db.nDeleteOnFail++] = fossil_strdup(zFilename);
}
static int nBegin = 0;      /* Nesting depth of BEGIN */

static int isNewRepo = 0;   /* True if the repository is newly created */
static int doRollback = 0;  /* True to force a rollback */
static int nCommitHook = 0; /* Number of commit hooks */
static struct sCommitHook {
  int (*xHook)(void);  /* Functions to call at db_end_transaction() */
/*
** Return the transaction nesting depth.  0 means we are currently
** not in a transaction.
*/
int db_transaction_nesting_depth(void){
  return db.nBegin;
}

/*
** Return a pointer to a string that is the code point where the
** current transaction was started.
*/
char *db_transaction_start_point(void){
  int sequence;        /* Call functions in sequence order */
} aHook[5];
static Stmt *pAllStmt = 0;  /* List of all unfinalized statements */
  return mprintf("%s:%d", db.zStartFile, db.iStartLine);
}

/*
** This routine is called by the SQLite commit-hook mechanism
** just prior to each commit.  All this routine does is verify
** that nBegin really is zero.  That insures that transactions
** cannot commit by any means other than by calling db_end_transaction()
** below.
**
** This is just a safety and sanity check.
*/
static int db_verify_at_commit(void *notUsed){
  if( nBegin ){
  if( db.nBegin ){
    fossil_panic("illegal commit attempt");
    return 1;
  }
  return 0;
}

/*
** Silently add the filename and line number as parameter to each
** db_begin_transaction call.
*/
#if INTERFACE
#define db_begin_transaction()    db_begin_transaction_real(__FILE__,__LINE__)
#define db_begin_write()          db_begin_write_real(__FILE__,__LINE__)
#define db_commit_transaction()   db_end_transaction(0)
#define db_rollback_transaction() db_end_transaction(1)
#endif

/*
** Begin and end a nested transaction
** Begin a nested transaction
*/
void db_begin_transaction(void){
  if( nBegin==0 ){
void db_begin_transaction_real(const char *zStartFile, int iStartLine){
  if( db.nBegin==0 ){
    db_multi_exec("BEGIN");
    sqlite3_commit_hook(g.db, db_verify_at_commit, 0);
    db.nPriorChanges = sqlite3_total_changes(g.db);
    db.doRollback = 0;
    db.zStartFile = zStartFile;
    db.iStartLine = iStartLine;
    db.wrTxn = 0;
  }
  nBegin++;
  db.nBegin++;
}
/*
** Begin a new transaction for writing.
*/
void db_begin_write_real(const char *zStartFile, int iStartLine){
  if( db.nBegin==0 ){
    if( !db_is_writeable("repository") ){
      db_multi_exec("BEGIN");
    }else{
      db_multi_exec("BEGIN IMMEDIATE");
      sqlite3_commit_hook(g.db, db_verify_at_commit, 0);
      db.nPriorChanges = sqlite3_total_changes(g.db);
      db.doRollback = 0;
      db.zStartFile = zStartFile;
      db.iStartLine = iStartLine;
      db.wrTxn = 1;
    }
  }else if( !db.wrTxn ){
    fossil_warning("read txn at %s:%d might cause SQLITE_BUSY "
       "for the write txn at %s:%d",
       db.zStartFile, db.iStartLine, zStartFile, iStartLine);
  }
  db.nBegin++;
}

/* End a transaction previously started using db_begin_transaction()
** or db_begin_write().
*/
void db_end_transaction(int rollbackFlag){
  if( g.db==0 ) return;
  if( nBegin<=0 ) return;
  if( rollbackFlag ) doRollback = 1;
  nBegin--;
  if( nBegin==0 ){
  if( db.nBegin<=0 ){
    fossil_warning("Extra call to db_end_transaction");
    return;
  }
  if( rollbackFlag ){
    db.doRollback = 1;
    if( g.fSqlTrace ) fossil_trace("-- ROLLBACK by request\n");
  }
  db.nBegin--;
  if( db.nBegin==0 ){
    int i;
    if( db.doRollback==0 && db.nPriorChanges<sqlite3_total_changes(g.db) ){
      i = 0;
      db_protect_only(PROTECT_SENSITIVE);
      while( db.nBeforeCommit ){
        db.nBeforeCommit--;
        sqlite3_exec(g.db, db.azBeforeCommit[i], 0, 0, 0);
        sqlite3_free(db.azBeforeCommit[i]);
        i++;
      }
      leaf_do_pending_checks();
      db_protect_pop();
    }
    for(i=0; doRollback==0 && i<nCommitHook; i++){
      doRollback |= aHook[i].xHook();
    }
    db_multi_exec(doRollback ? "ROLLBACK" : "COMMIT");
    doRollback = 0;
    for(i=0; db.doRollback==0 && i<db.nCommitHook; i++){
      int rc = db.aHook[i].xHook();
      if( rc ){
        db.doRollback = 1;
        if( g.fSqlTrace ) fossil_trace("-- ROLLBACK due to aHook[%d]\n", i);
      }
    }
    while( db.pAllStmt ){
      db_finalize(db.pAllStmt);
    }
    db_multi_exec("%s", db.doRollback ? "ROLLBACK" : "COMMIT");
    db.doRollback = 0;
  }
}

/*
** Force a rollback and shutdown the database
*/
void db_force_rollback(void){
  int i;
  static int busy = 0;
  sqlite3_stmt *pStmt = 0;
  if( busy ) return;
  if( busy || g.db==0 ) return;
  busy = 1;
  undo_rollback();
  if( nBegin ){
    sqlite3_exec(g.db, "ROLLBACK", 0, 0, 0);
  while( (pStmt = sqlite3_next_stmt(g.db,pStmt))!=0 ){
    if( isNewRepo ){
      db_close();
    sqlite3_reset(pStmt);
      unlink(g.zRepositoryName);
    }
  }
  while( db.pAllStmt ){
    db_finalize(db.pAllStmt);
  }
  if( db.nBegin ){
    sqlite3_exec(g.db, "ROLLBACK", 0, 0, 0);
  nBegin = 0;
    db.nBegin = 0;
  }
  busy = 0;
  db_close(0);
  for(i=0; i<db.nDeleteOnFail; i++){
    file_delete(db.azDeleteOnFail[i]);
  }
}

/*
** Install a commit hook.  Hooks are installed in sequence order.
** It is an error to install the same commit hook more than once.
**
** Each commit hook is called (in order of accending sequence) at
** Each commit hook is called (in order of ascending sequence) at
** each commit operation.  If any commit hook returns non-zero,
** the subsequence commit hooks are omitted and the transaction
** rolls back rather than commit.  It is the responsibility of the
** hooks themselves to issue any error messages.
*/
void db_commit_hook(int (*x)(void), int sequence){
  int i;
  assert( nCommitHook < sizeof(aHook)/sizeof(aHook[1]) );
  for(i=0; i<nCommitHook; i++){
    assert( x!=aHook[i].xHook );
    if( aHook[i].sequence>sequence ){
  assert( db.nCommitHook < count(db.aHook) );
  for(i=0; i<db.nCommitHook; i++){
    assert( x!=db.aHook[i].xHook );
    if( db.aHook[i].sequence>sequence ){
      int s = sequence;
      int (*xS)(void) = x;
      sequence = aHook[i].sequence;
      x = aHook[i].xHook;
      aHook[i].sequence = s;
      aHook[i].xHook = xS;
      sequence = db.aHook[i].sequence;
      x = db.aHook[i].xHook;
      db.aHook[i].sequence = s;
      db.aHook[i].xHook = xS;
    }
  }
  db.aHook[db.nCommitHook].sequence = sequence;
  db.aHook[db.nCommitHook].xHook = x;
  db.nCommitHook++;
}

#if INTERFACE
/*
** Flag bits for db_protect() and db_unprotect() indicating which parts
** of the databases should be write protected or write enabled, respectively.
*/
#define PROTECT_USER       0x01  /* USER table */
#define PROTECT_CONFIG     0x02  /* CONFIG and GLOBAL_CONFIG tables */
#define PROTECT_SENSITIVE  0x04  /* Sensitive and/or global settings */
#define PROTECT_READONLY   0x08  /* everything except TEMP tables */
#define PROTECT_BASELINE   0x10  /* protection system is working */
#define PROTECT_ALL        0x1f  /* All of the above */
#define PROTECT_NONE       0x00  /* Nothing.  Everything is open */
#endif /* INTERFACE */

/*
** Enable or disable database write protections.
**
**    db_protext(X)         Add protects on X
**    db_unprotect(X)       Remove protections on X
**    db_protect_only(X)    Remove all prior protections then set
**                          protections to only X.
**
** Each of these routines pushes the previous protection mask onto
** a finite-size stack.  Each should be followed by a call to
** db_protect_pop() to pop the stack and restore the protections that
** existed prior to the call.  The protection mask stack has a limited
** depth, so take care not to nest calls too deeply.
**
** About Database Write Protection
** -------------------------------
**
** This is *not* a primary means of defending the application from
** attack.  Fossil should be secure even if this mechanism is disabled.
** The purpose of database write protection is to provide an additional
** layer of defense in case SQL injection bugs somehow slip into other
** parts of the system.  In other words, database write protection is
** not the primary defense but rather defense in depth.
**
** This mechanism mostly focuses on the USER table, to prevent an
** attacker from giving themselves Admin privilegs, and on the
** CONFIG table and especially "sensitive" settings such as
** "diff-command" or "editor" that if compromised by an attacker
** could lead to an RCE.
**
** By default, the USER and CONFIG tables are read-only.  Various
** subsystems that legitimately need to change those tables can
** temporarily do so using:
**
**     db_unprotect(PROTECT_xxx);
**     // make the legitmate changes here
**     db_protect_pop();
**
** Code that runs inside of reduced protections should be carefully
** reviewed to ensure that it is harmless and not subject to SQL
** injection.
**
** Read-only operations (such as many web pages like /timeline)
** can invoke db_protect(PROTECT_ALL) to effectively make the database
** read-only.  TEMP tables (which are often used for these kinds of
** pages) are still writable, however.
**
** The PROTECT_SENSITIVE protection is a subset of PROTECT_CONFIG
** that blocks changes to all of the global_config table, but only
** "sensitive" settings in the config table.  PROTECT_SENSITIVE
** relies on triggers and the protected_setting() SQL function to
** prevent changes to sensitive settings.
**
** PROTECT_READONLY is set for any HTTP request for which the HTTP_REFERER
** is not the same origin.  This is an additional defense against cross-site-
** scripting attacks.  As with all of these defenses, this is only an extra
** backup layer.  Fossil should be proof against XSS attacks even without this.
**
** Any violation of these security restrictions results in a SECURITY message
** in the server log (if enabled).  A violation of any of these restrictions
** probably indicates a bug in Fossil and should be reported to the
** developers.
**
** Additional Notes
** ----------------
**
** Calls to routines like db_set() and db_unset() temporarily disable
** the PROTECT_CONFIG protection.  The assumption is that these calls
** cannot be invoked by an SQL injection and are thus safe.  Make sure
** this is the case by always using a string literal as the name argument
** to db_set() and db_unset() and friend, not a variable that might
** be compromised by an attack.
*/
void db_protect_only(unsigned flags){
  if( db.nProtect>=count(db.aProtect)-2 ){
    fossil_panic("too many db_protect() calls");
  }
  db.aProtect[db.nProtect++] = db.protectMask;
  if( (flags & PROTECT_SENSITIVE)!=0
   && db.bProtectTriggers==0
   && g.repositoryOpen
  ){
    /* Create the triggers needed to protect sensitive settings from
    ** being created or modified the first time that PROTECT_SENSITIVE
    ** is enabled.  Deleting a sensitive setting is harmless, so there
    ** is not trigger to block deletes.  After being created once, the
    ** triggers persist for the life of the database connection. */
    unsigned savedProtectMask = db.protectMask;
    db.protectMask = 0;
    db_multi_exec(
      "CREATE TEMP TRIGGER protect_1 BEFORE INSERT ON config"
      " WHEN protected_setting(new.name) BEGIN"
      "  SELECT raise(abort,'not authorized');"
      "END;\n"
      "CREATE TEMP TRIGGER protect_2 BEFORE UPDATE ON config"
      " WHEN protected_setting(new.name) BEGIN"
      "  SELECT raise(abort,'not authorized');"
      "END;\n"
    );
    db.bProtectTriggers = 1;
    db.protectMask = savedProtectMask;
  }
  db.protectMask = flags;
}
void db_protect(unsigned flags){
  db_protect_only(db.protectMask | flags);
}
void db_unprotect(unsigned flags){
  if( db.nProtect>=count(db.aProtect)-2 ){
    fossil_panic("too many db_unprotect() calls");
  }
  db.aProtect[db.nProtect++] = db.protectMask;
  db.protectMask &= ~(flags|PROTECT_READONLY);
}
void db_protect_pop(void){
  if( db.nProtect<1 ){
    fossil_panic("too many db_protect_pop() calls");
  }
  db.protectMask = db.aProtect[--db.nProtect];
  }
  aHook[nCommitHook].sequence = sequence;
  aHook[nCommitHook].xHook = x;
  nCommitHook++;
}
}
int db_is_protected(unsigned flags){
  return (db.protectMask & flags)!=0;
}

/*
** Verify that the desired database write protections are in place.
** Throw a fatal error if not.
*/
void db_assert_protected(unsigned flags){
  if( (flags & db.protectMask)!=flags ){
    fossil_fatal("missing database write protection bits: %02x",
                 flags & ~db.protectMask);
  }
}

/*
** Assert that either all protections are off (including PROTECT_BASELINE
** which is usually always enabled), or the setting named in the argument
** is no a sensitive setting.
**
** This assert() is used to verify that the db_set() and db_set_int()
** interfaces do not modify a sensitive setting.
*/
void db_assert_protection_off_or_not_sensitive(const char *zName){
  if( db.protectMask!=0 && db_setting_is_protected(zName) ){
    fossil_panic("unauthorized change to protected setting \"%s\"", zName);
  }
}

/*
** Every Fossil database connection automatically registers the following
** overarching authenticator callback, and leaves it registered for the
** duration of the connection.  This authenticator will call any
** sub-authenticators that are registered using db_set_authorizer().
**
** == Testing Notes ==
**
** Run Fossil as using a command like this:
**
**     ./fossil sql --test --errorlog -
**
** Then enter SQL commands like one of these:
**
**     SELECT db_protect('user');
**     SELECT db_protect('config');
**     SELECT db_protect('sensitive');
**     SELECT db_protect('readonly');
**     SELECT db_protect('all');
**
** Then try to do SQL statements that would violate the constraints and
** verify that SECURITY warnings appear in the error log output.  See
** also the sqlcmd_db_protect() function in sqlcmd.c.
*/
int db_top_authorizer(
  void *pNotUsed,
  int eCode,
  const char *z0,
  const char *z1,
  const char *z2,
  const char *z3
){
  int rc = SQLITE_OK;
  switch( eCode ){
    case SQLITE_INSERT:
    case SQLITE_UPDATE:
    case SQLITE_DELETE: {
      if( (db.protectMask & PROTECT_USER)!=0
          && sqlite3_stricmp(z0,"user")==0 ){
        fossil_errorlog(
          "SECURITY: authorizer blocks DML on protected USER table\n");
        rc = SQLITE_DENY;
      }else if( (db.protectMask & PROTECT_CONFIG)!=0 &&
               (sqlite3_stricmp(z0,"config")==0 ||
                sqlite3_stricmp(z0,"global_config")==0) ){
        fossil_errorlog(
          "SECURITY: authorizer blocks DML on protected table \"%s\"\n", z0);
        rc = SQLITE_DENY;
      }else if( (db.protectMask & PROTECT_SENSITIVE)!=0 &&
                sqlite3_stricmp(z0,"global_config")==0 ){
        fossil_errorlog(
          "SECURITY: authorizer blocks DML on protected GLOBAL_CONFIG table\n");
        rc = SQLITE_DENY;
      }else if( (db.protectMask & PROTECT_READONLY)!=0
                && (sqlite3_stricmp(z2, "repository")==0
                    || sqlite3_stricmp(z2,"configdb")==0
                    || sqlite3_stricmp(z2,"localdb")==0) ){
        /* The READONLY constraint only applies to persistent database files.
        ** "temp" and "mem1" and other transient databases are not
        ** constrained by READONLY. */
        fossil_errorlog(
          "SECURITY: authorizer blocks DML on table \"%s\" due to the "
          "request coming from a different origin\n", z0);
        rc = SQLITE_DENY;
      }
      break;
    }
    case SQLITE_DROP_TEMP_TRIGGER: {
      /* Do not allow the triggers that enforce PROTECT_SENSITIVE
      ** to be dropped */
      fossil_errorlog(
        "SECURITY: authorizer blocks attempt to drop a temporary trigger\n");
      rc = SQLITE_DENY;
      break;
    }
  }
  if( db.xAuth && rc==SQLITE_OK ){
    rc = db.xAuth(db.pAuthArg, eCode, z0, z1, z2, z3);
  }
  return rc;
}

/*
** Set or unset the query authorizer callback function
*/
void db_set_authorizer(
  int(*xAuth)(void*,int,const char*,const char*,const char*,const char*),
  void *pArg,
  const char *zName /* for tracing */
){
  if( db.xAuth ){
    fossil_panic("multiple active db_set_authorizer() calls");
  }
  db.xAuth = xAuth;
  db.pAuthArg = pArg;
  db.zAuthName = zName;
  if( g.fSqlTrace ) fossil_trace("-- set authorizer %s\n", zName);
}
void db_clear_authorizer(void){
  if( db.zAuthName && g.fSqlTrace ){
    fossil_trace("-- discontinue authorizer %s\n", db.zAuthName);
  }
  db.xAuth = 0;
  db.pAuthArg = 0;
  db.zAuthName = 0;
}

#if INTERFACE
/*
** Possible flags to db_vprepare
*/
#define DB_PREPARE_IGNORE_ERROR  0x001  /* Suppress errors */
#define DB_PREPARE_PERSISTENT    0x002  /* Stmt will stick around for a while */
#endif

/*
** Prepare a Stmt.  Assume that the Stmt is previously uninitialized.
** If the input string contains multiple SQL statements, only the first
** one is processed.  All statements beyond the first are silently ignored.
*/
int db_vprepare(Stmt *pStmt, const char *zFormat, va_list ap){
int db_vprepare(Stmt *pStmt, int flags, const char *zFormat, va_list ap){
  int rc;
  int prepFlags = 0;
  char *zSql;
  const char *zExtra = 0;
  blob_zero(&pStmt->sql);
  blob_vappendf(&pStmt->sql, zFormat, ap);
  va_end(ap);
  zSql = blob_str(&pStmt->sql);
  db.nPrepare++;
  if( flags & DB_PREPARE_PERSISTENT ){
    prepFlags = SQLITE_PREPARE_PERSISTENT;
  }
  if( sqlite3_prepare_v2(g.db, zSql, -1, &pStmt->pStmt, 0)!=0 ){
  rc = sqlite3_prepare_v3(g.db, zSql, -1, prepFlags, &pStmt->pStmt, &zExtra);
  if( rc!=0 && (flags & DB_PREPARE_IGNORE_ERROR)==0 ){
    db_err("%s\n%s", sqlite3_errmsg(g.db), zSql);
  }else if( zExtra && !fossil_all_whitespace(zExtra) ){
    db_err("surplus text follows SQL: \"%s\"", zExtra);
  }
  pStmt->pNext = pStmt->pPrev = 0;
  pStmt->pNext = db.pAllStmt;
  pStmt->pPrev = 0;
  if( db.pAllStmt ) db.pAllStmt->pPrev = pStmt;
  db.pAllStmt = pStmt;
  pStmt->nStep = 0;
  pStmt->rc = rc;
  return 0;
  return rc;
}
int db_prepare(Stmt *pStmt, const char *zFormat, ...){
  int rc;
  va_list ap;
  va_start(ap, zFormat);
  rc = db_vprepare(pStmt, zFormat, ap);
  rc = db_vprepare(pStmt, 0, zFormat, ap);
  va_end(ap);
  return rc;
}
int db_prepare_ignore_error(Stmt *pStmt, const char *zFormat, ...){
  int rc;
  va_list ap;
  va_start(ap, zFormat);
  rc = db_vprepare(pStmt, DB_PREPARE_IGNORE_ERROR, zFormat, ap);
  va_end(ap);
  return rc;
}

/* This variant of db_prepare() checks to see if the statement has
** already been prepared, and if it has it becomes a no-op.
*/
int db_static_prepare(Stmt *pStmt, const char *zFormat, ...){
  int rc = SQLITE_OK;
  if( blob_size(&pStmt->sql)==0 ){
    va_list ap;
    va_start(ap, zFormat);
    rc = db_vprepare(pStmt, zFormat, ap);
    pStmt->pNext = pAllStmt;
    pStmt->pPrev = 0;
    if( pAllStmt ) pAllStmt->pPrev = pStmt;
    pAllStmt = pStmt;
    va_end(ap);
    rc = db_vprepare(pStmt, DB_PREPARE_PERSISTENT, zFormat, ap);
    va_end(ap);
  }
  return rc;
}

/* Return TRUE if static Stmt object pStmt has been initialized.
*/
int db_static_stmt_is_init(Stmt *pStmt){
  return blob_size(&pStmt->sql)>0;
}

/* Prepare a statement using text placed inside a Blob
** using blob_append_sql().
*/
int db_prepare_blob(Stmt *pStmt, Blob *pSql){
  int rc;
  char *zSql;
  pStmt->sql = *pSql;
  blob_init(pSql, 0, 0);
  zSql = blob_sql_text(&pStmt->sql);
  db.nPrepare++;
  rc = sqlite3_prepare_v3(g.db, zSql, -1, 0, &pStmt->pStmt, 0);
  if( rc!=0 ){
    db_err("%s\n%s", sqlite3_errmsg(g.db), zSql);
  }
  pStmt->pNext = pStmt->pPrev = 0;
  pStmt->nStep = 0;
  pStmt->rc = rc;
  return rc;
}


/*
** Return the index of a bind parameter
*/
static int paramIdx(Stmt *pStmt, const char *zParamName){
  int i = sqlite3_bind_parameter_index(pStmt->pStmt, zParamName);
  if( i==0 ){
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}
int db_bind_double(Stmt *pStmt, const char *zParamName, double rValue){
  return sqlite3_bind_double(pStmt->pStmt, paramIdx(pStmt, zParamName), rValue);
}
int db_bind_text(Stmt *pStmt, const char *zParamName, const char *zValue){
  return sqlite3_bind_text(pStmt->pStmt, paramIdx(pStmt, zParamName), zValue,
                           -1, SQLITE_STATIC);
}
int db_bind_text16(Stmt *pStmt, const char *zParamName, const char *zValue){
  return sqlite3_bind_text16(pStmt->pStmt, paramIdx(pStmt, zParamName), zValue,
                             -1, SQLITE_STATIC);
}
int db_bind_null(Stmt *pStmt, const char *zParamName){
  return sqlite3_bind_null(pStmt->pStmt, paramIdx(pStmt, zParamName));
}
int db_bind_blob(Stmt *pStmt, const char *zParamName, Blob *pBlob){
  return sqlite3_bind_blob(pStmt->pStmt, paramIdx(pStmt, zParamName),
                          blob_buffer(pBlob), blob_size(pBlob), SQLITE_STATIC);
}

/* bind_str() treats a Blob object like a TEXT string and binds it
** to the SQL variable.  Constrast this to bind_blob() which treats
** to the SQL variable.  Contrast this to bind_blob() which treats
** the Blob object like an SQL BLOB.
*/
int db_bind_str(Stmt *pStmt, const char *zParamName, Blob *pBlob){
  return sqlite3_bind_text(pStmt->pStmt, paramIdx(pStmt, zParamName),
                          blob_buffer(pBlob), blob_size(pBlob), SQLITE_STATIC);
}

/*
** Step the SQL statement.  Return either SQLITE_ROW or an error code
** or SQLITE_OK if the statement finishes successfully.
*/
int db_step(Stmt *pStmt){
  int rc;
  if( pStmt->pStmt==0 ) return pStmt->rc;
  rc = sqlite3_step(pStmt->pStmt);
  pStmt->nStep++;
  return rc;
}

/*
** Print warnings if a query is inefficient.
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3130
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3141
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3206
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3302
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3310
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3321

3322
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3325



3326
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3330
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}

/*
** Reset or finalize a statement.
*/
int db_reset(Stmt *pStmt){
  int rc;
  db_stats(pStmt);
  if( g.fSqlStats ){ db_stats(pStmt); }
  rc = sqlite3_reset(pStmt->pStmt);
  db_check_result(rc);
  db_check_result(rc, pStmt);
  return rc;
}
int db_finalize(Stmt *pStmt){
  int rc;
  db_stats(pStmt);
  blob_reset(&pStmt->sql);
  rc = sqlite3_finalize(pStmt->pStmt);
  db_check_result(rc);
  pStmt->pStmt = 0;
  if( pStmt->pNext ){
    pStmt->pNext->pPrev = pStmt->pPrev;
  }
  if( pStmt->pPrev ){
    pStmt->pPrev->pNext = pStmt->pNext;
  }else if( pAllStmt==pStmt ){
    pAllStmt = pStmt->pNext;
  }else if( db.pAllStmt==pStmt ){
    db.pAllStmt = pStmt->pNext;
  }
  pStmt->pNext = 0;
  pStmt->pPrev = 0;
  if( g.fSqlStats ){ db_stats(pStmt); }
  blob_reset(&pStmt->sql);
  rc = sqlite3_finalize(pStmt->pStmt);
  db_check_result(rc, pStmt);
  pStmt->pStmt = 0;
  return rc;
}

/*
** Return the rowid of the most recent insert
*/
i64 db_last_insert_rowid(void){
  return sqlite3_last_insert_rowid(g.db);
int db_last_insert_rowid(void){
  i64 x = sqlite3_last_insert_rowid(g.db);
  if( x<0 || x>(i64)2147483647 ){
    fossil_panic("rowid out of range (0..2147483647)");
  }
  return (int)x;
}

/*
** Return the number of rows that were changed by the most recent
** INSERT, UPDATE, or DELETE.  Auxiliary changes caused by triggers
** or other side effects are not counted.
*/
int db_changes(void){
  return sqlite3_changes(g.db);
}

/*
** Extract text, integer, or blob values from the N-th column of the
** current row.
*/
int db_column_type(Stmt *pStmt, int N){
  return sqlite3_column_type(pStmt->pStmt, N);
}
int db_column_bytes(Stmt *pStmt, int N){
  return sqlite3_column_bytes(pStmt->pStmt, N);
}
int db_column_int(Stmt *pStmt, int N){
  return sqlite3_column_int(pStmt->pStmt, N);
}
i64 db_column_int64(Stmt *pStmt, int N){
  return sqlite3_column_int64(pStmt->pStmt, N);
}
double db_column_double(Stmt *pStmt, int N){
  return sqlite3_column_double(pStmt->pStmt, N);
}
const char *db_column_text(Stmt *pStmt, int N){
  return (char*)sqlite3_column_text(pStmt->pStmt, N);
}
const char *db_column_raw(Stmt *pStmt, int N){
  return (const char*)sqlite3_column_blob(pStmt->pStmt, N);
}
const char *db_column_name(Stmt *pStmt, int N){
  return (char*)sqlite3_column_name(pStmt->pStmt, N);
}
int db_column_count(Stmt *pStmt){
  return sqlite3_column_count(pStmt->pStmt);
}
char *db_column_malloc(Stmt *pStmt, int N){
  return mprintf("%s", db_column_text(pStmt, N));
  return fossil_strdup_nn(db_column_text(pStmt, N));
}
void db_column_blob(Stmt *pStmt, int N, Blob *pBlob){
  blob_append(pBlob, sqlite3_column_blob(pStmt->pStmt, N),
              sqlite3_column_bytes(pStmt->pStmt, N));
}
Blob db_column_text_as_blob(Stmt *pStmt, int N){
  Blob x;
  blob_init(&x, (char*)sqlite3_column_text(pStmt->pStmt,N),
            sqlite3_column_bytes(pStmt->pStmt,N));
  return x;

}

/*
** Initialize a blob to an ephermeral copy of the content of a
** Initialize a blob to an ephemeral copy of the content of a
** column in the current row.  The data in the blob will become
** invalid when the statement is stepped or reset.
*/
void db_ephemeral_blob(Stmt *pStmt, int N, Blob *pBlob){
  blob_init(pBlob, sqlite3_column_blob(pStmt->pStmt, N),
              sqlite3_column_bytes(pStmt->pStmt, N));
}

/*
** Check a result code.  If it is not SQLITE_OK, print the
** corresponding error message and exit.
*/
void db_check_result(int rc){
  if( rc!=SQLITE_OK ){
    db_err("SQL error: %s", sqlite3_errmsg(g.db));
  }
}

/*
** Execute a single prepared statement until it finishes.
*/
int db_exec(Stmt *pStmt){
  int rc;
  while( (rc = db_step(pStmt))==SQLITE_ROW ){}
  rc = db_reset(pStmt);
  db_check_result(rc);
  db_check_result(rc, pStmt);
  return rc;
}

/*
** COMMAND: test-db-exec-error
** Usage: %fossil test-db-exec-error
**
** Invoke the db_exec() interface with an erroneous SQL statement
** in order to verify the error handling logic.
*/
void db_test_db_exec_cmd(void){
  Stmt err;
  db_find_and_open_repository(0,0);
  db_prepare(&err, "INSERT INTO repository.config(name) VALUES(NULL);");
  db_exec(&err);
}

/*
** COMMAND: test-db-prepare
** Usage: %fossil test-db-prepare ?OPTIONS? SQL-STATEMENT
**
** Options:
**   --auth-report   Enable the ticket report query authorizer
**   --auth-ticket   Enable the ticket schema query authorizer
**
** Invoke db_prepare() on the SQL input.  Report any errors encountered.
** This command is used to verify error detection logic in the db_prepare()
** utility routine.
*/
void db_test_db_prepare(void){
  const int fAuthReport = find_option("auth-report",0,0)!=0;
  const int fAuthSchema = find_option("auth-ticket",0,0)!=0;
  char * zReportErr = 0; /* auth-report error string. */
  int nSchemaErr = 0;    /* Number of auth-ticket errors. */
  Stmt err;

  if(fAuthReport + fAuthSchema > 1){
    fossil_fatal("Only one of --auth-report or --auth-ticket "
                 "may be used.");
  }
  db_find_and_open_repository(0,0);
  verify_all_options();
  if( g.argc!=3 ) usage("?OPTIONS? SQL");
  if(fAuthReport){
    report_restrict_sql(&zReportErr);
  }else if(fAuthSchema){
    ticket_restrict_sql(&nSchemaErr);
  }
  db_prepare(&err, "%s", g.argv[2]/*safe-for-%s*/);
  db_finalize(&err);
  if(fAuthReport){
    report_unrestrict_sql();
    if(zReportErr){
      fossil_warning("Report authorizer error: %s\n", zReportErr);
      fossil_free(zReportErr);
    }
  }else if(fAuthSchema){
    ticket_unrestrict_sql();
    if(nSchemaErr){
      fossil_warning("Ticket schema authorizer error count: %d\n",
                     nSchemaErr);
    }
  }
}

/*
** Print the output of one or more SQL queries on standard output.
** This routine is used for debugging purposes only.
*/
int db_debug(const char *zSql, ...){
  Blob sql;
  int rc = SQLITE_OK;
  va_list ap;
  const char *z, *zEnd;
  sqlite3_stmt *pStmt;
  blob_init(&sql, 0, 0);
  va_start(ap, zSql);
  blob_vappendf(&sql, zSql, ap);
  va_end(ap);
  z = blob_str(&sql);
  while( rc==SQLITE_OK && z[0] ){
    pStmt = 0;
    rc = sqlite3_prepare_v2(g.db, z, -1, &pStmt, &zEnd);
    if( rc!=SQLITE_OK ) break;
    if( pStmt ){
      int nRow = 0;
      db.nPrepare++;
      while( sqlite3_step(pStmt)==SQLITE_ROW ){
        int i, n;
        if( nRow++ > 0 ) fossil_print("\n");
        n = sqlite3_column_count(pStmt);
        for(i=0; i<n; i++){
          fossil_print("%s = %s\n", sqlite3_column_name(pStmt, i),
                       sqlite3_column_text(pStmt,i));
        }
      }
      rc = sqlite3_finalize(pStmt);
      if( rc ) db_err("%s: {%.*s}", sqlite3_errmsg(g.db), (int)(zEnd-z), z);
    }
    z = zEnd;
  }
  blob_reset(&sql);
  return rc;
}

/*
** Execute multiple SQL statements.
** Execute multiple SQL statements.  The input text is executed
** directly without any formatting.
*/
int db_exec_sql(const char *z){
  int rc = SQLITE_OK;
  sqlite3_stmt *pStmt;
  const char *zEnd;
  while( rc==SQLITE_OK && z[0] ){
    pStmt = 0;
    rc = sqlite3_prepare_v2(g.db, z, -1, &pStmt, &zEnd);
    if( rc ){
      db_err("%s: {%s}", sqlite3_errmsg(g.db), z);
    }else if( pStmt ){
      db.nPrepare++;
      while( sqlite3_step(pStmt)==SQLITE_ROW ){}
      rc = sqlite3_finalize(pStmt);
      if( rc ) db_err("%s: {%.*s}", sqlite3_errmsg(g.db), (int)(zEnd-z), z);
    }
    z = zEnd;
  }
  return rc;
}

/*
** Execute multiple SQL statements using printf-style formatting.
*/
int db_multi_exec(const char *zSql, ...){
  Blob sql;
  int rc;
  va_list ap;
  char *zErr = 0;

  blob_init(&sql, 0, 0);
  va_start(ap, zSql);
  blob_vappendf(&sql, zSql, ap);
  va_end(ap);
  rc = sqlite3_exec(g.db, blob_buffer(&sql), 0, 0, &zErr);
  if( rc!=SQLITE_OK ){
    db_err("%s\n%s", zErr, blob_buffer(&sql));
  rc = db_exec_sql(blob_str(&sql));
  }
  blob_reset(&sql);
  return rc;
}

/*
** Optionally make the following changes to the database if feasible and
** convenient.  Do not start a transaction for these changes, but only
** make these changes if other changes are also being made.
*/
void db_optional_sql(const char *zDb, const char *zSql, ...){
  if( db_is_writeable(zDb) && db.nBeforeCommit < count(db.azBeforeCommit) ){
    va_list ap;
    va_start(ap, zSql);
    db.azBeforeCommit[db.nBeforeCommit++] = sqlite3_vmprintf(zSql, ap);
    va_end(ap);
  }
}

/*
** Execute a query and return a single integer value.
*/
i64 db_int64(i64 iDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  i64 rc;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = iDflt;
  }else{
    rc = db_column_int64(&s, 0);
  }
  db_finalize(&s);
  return rc;
}
int db_int(int iDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  int rc;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = iDflt;
  }else{
    rc = db_column_int(&s, 0);
  }
  db_finalize(&s);
  return rc;
}

/*
** Return TRUE if the query would return 1 or more rows.  Return
** FALSE if the query result would be an empty set.
*/
int db_exists(const char *zSql, ...){
  va_list ap;
  Stmt s;
  int rc;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    rc = 0;
  }else{
    rc = 1;
  }
  db_finalize(&s);
  return rc;
}


/*
** Execute a query and return a floating-point value.
*/
double db_double(double rDflt, const char *zSql, ...){
  va_list ap;
  Stmt s;
  double r;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)!=SQLITE_ROW ){
    r = rDflt;
  }else{
    r = db_column_double(&s, 0);
  }
  db_finalize(&s);
  return r;
}

/*
** Execute a query and append the first column of the first row
** of the result set to blob given in the first argument.
*/
void db_blob(Blob *pResult, const char *zSql, ...){
  va_list ap;
  Stmt s;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)==SQLITE_ROW ){
    blob_append(pResult, sqlite3_column_blob(s.pStmt, 0),
                         sqlite3_column_bytes(s.pStmt, 0));
  }
  db_finalize(&s);
}

/*
** Execute a query.  Return the first column of the first row
** of the result set as a string.  Space to hold the string is
** obtained from malloc().  If the result set is empty, return
** zDefault instead.
*/
char *db_text(char *zDefault, const char *zSql, ...){
char *db_text(const char *zDefault, const char *zSql, ...){
  va_list ap;
  Stmt s;
  char *z;
  va_start(ap, zSql);
  db_vprepare(&s, zSql, ap);
  db_vprepare(&s, 0, zSql, ap);
  va_end(ap);
  if( db_step(&s)==SQLITE_ROW ){
    z = mprintf("%s", sqlite3_column_text(s.pStmt, 0));
    z = fossil_strdup_nn((const char*)sqlite3_column_text(s.pStmt, 0));
  }else if( zDefault ){
    z = mprintf("%s", zDefault);
  }else{
    z = 0;
    z = fossil_strdup(zDefault);
  }
  db_finalize(&s);
  return z;
}

#ifdef __MINGW32__
extern char *sqlite3_win32_mbcs_to_utf8(const char*);
#endif

/*
** Initialize a new database file with the given schema.  If anything
** goes wrong, call db_err() to exit.
**
** If zFilename is NULL, then create an empty repository in an in-memory
** database.
*/
void db_init_database(
  const char *zFileName,   /* Name of database file to create */
  const char *zSchema,     /* First part of schema */
  ...                      /* Additional SQL to run.  Terminate with NULL. */
){
  sqlite3 *db;
  sqlite3 *xdb;
  int rc;
  const char *zSql;
  va_list ap;

#ifdef __MINGW32__
  zFileName = sqlite3_win32_mbcs_to_utf8(zFileName);
#endif
  rc = sqlite3_open(zFileName, &db);
  xdb = db_open(zFileName ? zFileName : ":memory:");
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
  }
  sqlite3_busy_timeout(db, 5000);
  sqlite3_exec(db, "BEGIN EXCLUSIVE", 0, 0, 0);
  rc = sqlite3_exec(db, zSchema, 0, 0, 0);
  sqlite3_exec(xdb, "BEGIN EXCLUSIVE", 0, 0, 0);
  rc = sqlite3_exec(xdb, zSchema, 0, 0, 0);
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
    db_err("%s", sqlite3_errmsg(xdb));
  }
  va_start(ap, zSchema);
  while( (zSql = va_arg(ap, const char*))!=0 ){
    rc = sqlite3_exec(db, zSql, 0, 0, 0);
    rc = sqlite3_exec(xdb, zSql, 0, 0, 0);
    if( rc!=SQLITE_OK ){
      db_err(sqlite3_errmsg(db));
      db_err("%s", sqlite3_errmsg(xdb));
    }
  }
  va_end(ap);
  sqlite3_exec(db, "COMMIT", 0, 0, 0);
  sqlite3_close(db);
  sqlite3_exec(xdb, "COMMIT", 0, 0, 0);
  if( zFileName || g.db!=0 ){
    sqlite3_close(xdb);
  }else{
    g.db = xdb;
  }
}

/*
** Function to return the number of seconds since 1970.  This is
** the same as strftime('%s','now') but is more compact.
*/
void db_now_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  sqlite3_result_int64(context, time(0));
}

/*
** Function to return the check-in time for a file.
**
**      checkin_mtime(CKINID,RID)
**
** CKINID:  The RID for the manifest for a check-in.
** RID:     The RID of a file in CKINID for which the check-in time
**          is desired.
**
** Returns: The check-in time in seconds since 1970.
*/
void db_checkin_mtime_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  i64 mtime;
  int rc = mtime_of_manifest_file(sqlite3_value_int(argv[0]),
                                  sqlite3_value_int(argv[1]), &mtime);
  if( rc==0 ){
    sqlite3_result_int64(context, mtime);
  }
}

/*
** SQL wrapper around the symbolic_name_to_rid() C-language API.
** Examples:
**
**     symbolic_name_to_rid('trunk');
**     symbolic_name_to_rid('trunk','w');
**
*/
void db_sym2rid_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *arg;
  const char *type;
  if(1 != argc && 2 != argc){
    sqlite3_result_error(context, "Expecting one or two arguments", -1);
    return;
  }
  arg = (const char*)sqlite3_value_text(argv[0]);
  if(!arg){
    sqlite3_result_error(context, "Expecting a STRING argument", -1);
  }else{
    int rid;
    type = (2==argc) ? (const char*)sqlite3_value_text(argv[1]) : 0;
    if(!type) type = "ci";
    rid = symbolic_name_to_rid( arg, type );
    if(rid<0){
      sqlite3_result_error(context, "Symbolic name is ambiguous.", -1);
    }else if(0==rid){
      sqlite3_result_null(context);
    }else{
      sqlite3_result_int64(context, rid);
    }
  }
}

/*
** The toLocal() SQL function returns a string that is an argument to a
** date/time function that is appropriate for modifying the time for display.
** If UTC time display is selected, no modification occurs.  If local time
** display is selected, the time is adjusted appropriately.
**
** Example usage:
**
**         SELECT datetime('now',toLocal());
*/
void db_tolocal_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  if( g.fTimeFormat==0 ){
    if( db_get_int("timeline-utc", 1) ){
      g.fTimeFormat = 1;
    }else{
      g.fTimeFormat = 2;
    }
  }
  if( g.fTimeFormat==1 ){
    sqlite3_result_text(context, "0 seconds", -1, SQLITE_STATIC);
  }else{
    sqlite3_result_text(context, "localtime", -1, SQLITE_STATIC);
  }
}

/*
** The fromLocal() SQL function returns a string that is an argument to a
** date/time function that is appropriate to convert an input time to UTC.
** If UTC time display is selected, no modification occurs.  If local time
** display is selected, the time is adjusted from local to UTC.
**
** Example usage:
**
**         SELECT julianday(:user_input,fromLocal());
*/
void db_fromlocal_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  if( g.fTimeFormat==0 ){
    if( db_get_int("timeline-utc", 1) ){
      g.fTimeFormat = 1;
    }else{
      g.fTimeFormat = 2;
    }
  }
  if( g.fTimeFormat==1 ){
    sqlite3_result_text(context, "0 seconds", -1, SQLITE_STATIC);
  }else{
    sqlite3_result_text(context, "utc", -1, SQLITE_STATIC);
  }
}

/*
** If the input is a hexadecimal string, convert that string into a BLOB.
** If the input is not a hexadecimal string, return NULL.
*/
void db_hextoblob(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const unsigned char *zIn = sqlite3_value_text(argv[0]);
  int nIn = sqlite3_value_bytes(argv[0]);
  unsigned char *zOut;
  if( zIn==0 ) return;
  if( nIn&1 ) return;
  if( !validate16((const char*)zIn, nIn) ) return;
  zOut = sqlite3_malloc64( nIn/2 + 1 );
  if( zOut==0 ){
    sqlite3_result_error_nomem(context);
    return;
  }
  decode16(zIn, zOut, nIn);
  sqlite3_result_blob(context, zOut, nIn/2, sqlite3_free);
}

/*
** Return the XOR-obscured version of the input text.  Useful for
** updating authentication strings in Fossil settings.  To change
** the password locally stored for sync, for instance:
**
**    echo "UPDATE config
**        SET value = obscure('monkey123')
**        WHERE name = 'last-sync-pw'" |
**      fossil sql
**
** Note that user.pw uses a different obscuration algorithm, but
** you don't need to use 'fossil sql' for that anyway.  Just call
**
**    fossil user pass monkey123
**
** to change the local user entry's password in the same way.
**
** 2022-12-30:  If the user-data pointer is not NULL, then operate
** as unobscure() rather than obscure().  The obscure() variant of
** this routine is commonly available.  But unobscure is (currently)
** only registered by the "fossil remote config-data --show-passwords"
** command.
*/
void db_obscure(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const unsigned char *zIn = sqlite3_value_text(argv[0]);
  int nIn = sqlite3_value_bytes(argv[0]);
  char *zOut, *zTemp;
  if( 0==zIn ) return;
  if( 0==(zOut = sqlite3_malloc64( nIn * 2 + 3 )) ){
    sqlite3_result_error_nomem(context);
    return;
  }
  if( sqlite3_user_data(context)==0 ){
    zTemp = obscure((char*)zIn);
  }else{
    zTemp = unobscure((char*)zIn);
  }
  fossil_strcpy(zOut, zTemp);
  fossil_free(zTemp);
  sqlite3_result_text(context, zOut, strlen(zOut), sqlite3_free);
}

/*
** Return True if zName is a protected (a.k.a. "sensitive") setting.
*/
int db_setting_is_protected(const char *zName){
  const Setting *pSetting = zName ? db_find_setting(zName,0) : 0;
  return pSetting!=0 && pSetting->sensitive!=0;
}

/*
** Implement the protected_setting(X) SQL function.  This function returns
** true if X is the name of a protected (security-sensitive) setting and
** the db.protectSensitive flag is enabled.  It returns false otherwise.
*/
LOCAL void db_protected_setting_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zSetting;
  if( (db.protectMask & PROTECT_SENSITIVE)==0 ){
    sqlite3_result_int(context, 0);
    return;
  }
  zSetting = (const char*)sqlite3_value_text(argv[0]);
  sqlite3_result_int(context, db_setting_is_protected(zSetting));
}

/*
** Copied from SQLite ext/misc/uint.c...
**
** Compare text in lexicographic order, except strings of digits
** compare in numeric order.
**
** This version modified to also ignore case.
*/
static int uintNocaseCollFunc(
  void *notUsed,
  int nKey1, const void *pKey1,
  int nKey2, const void *pKey2
){
  const unsigned char *zA = (const unsigned char*)pKey1;
  const unsigned char *zB = (const unsigned char*)pKey2;
  int i=0, j=0, x;
  (void)notUsed;
  while( i<nKey1 && j<nKey2 ){
    if( fossil_isdigit(zA[i]) && fossil_isdigit(zB[j]) ){
      int k;
      while( i<nKey1 && zA[i]=='0' ){ i++; }
      while( j<nKey2 && zB[j]=='0' ){ j++; }
      k = 0;
      while( i+k<nKey1 && fossil_isdigit(zA[i+k])
          && j+k<nKey2 && fossil_isdigit(zB[j+k]) ){
        k++;
      }
      if( i+k<nKey1 && fossil_isdigit(zA[i+k]) ){
        return +1;
      }else if( j+k<nKey2 && fossil_isdigit(zB[j+k]) ){
        return -1;
      }else{
        x = memcmp(zA+i, zB+j, k);
        if( x ) return x;
        i += k;
        j += k;
      }
    }else
    if( zA[i]!=zB[j]
     && (x = fossil_tolower(zA[i]) - fossil_tolower(zB[j]))!=0
    ){
      return x;
    }else{
      i++;
      j++;
    }
  }
  return (nKey1 - i) - (nKey2 - j);
}


/*
** Register the SQL functions that are useful both to the internal
** representation and to the "fossil sql" command.
*/
void db_add_aux_functions(sqlite3 *db){
  sqlite3_create_collation(db, "uintnocase", SQLITE_UTF8,0,uintNocaseCollFunc);
  sqlite3_create_function(db, "checkin_mtime", 2, SQLITE_UTF8, 0,
                          db_checkin_mtime_function, 0, 0);
  sqlite3_create_function(db, "symbolic_name_to_rid", 1, SQLITE_UTF8, 0,
                          db_sym2rid_function, 0, 0);
  sqlite3_create_function(db, "symbolic_name_to_rid", 2, SQLITE_UTF8, 0,
                          db_sym2rid_function, 0, 0);
  sqlite3_create_function(db, "now", 0, SQLITE_UTF8, 0,
                          db_now_function, 0, 0);
  sqlite3_create_function(db, "toLocal", 0, SQLITE_UTF8, 0,
                          db_tolocal_function, 0, 0);
  sqlite3_create_function(db, "fromLocal", 0, SQLITE_UTF8, 0,
                          db_fromlocal_function, 0, 0);
  sqlite3_create_function(db, "hextoblob", 1, SQLITE_UTF8, 0,
                          db_hextoblob, 0, 0);
  sqlite3_create_function(db, "capunion", 1, SQLITE_UTF8, 0,
                          0, capability_union_step, capability_union_finalize);
  sqlite3_create_function(db, "fullcap", 1, SQLITE_UTF8, 0,
                          capability_fullcap, 0, 0);
  sqlite3_create_function(db, "find_emailaddr", 1, SQLITE_UTF8, 0,
                          alert_find_emailaddr_func, 0, 0);
  sqlite3_create_function(db, "display_name", 1, SQLITE_UTF8, 0,
                          alert_display_name_func, 0, 0);
  sqlite3_create_function(db, "obscure", 1, SQLITE_UTF8, 0,
                          db_obscure, 0, 0);
  sqlite3_create_function(db, "protected_setting", 1, SQLITE_UTF8, 0,
                          db_protected_setting_func, 0, 0);
  sqlite3_create_function(db, "win_reserved", 1, SQLITE_UTF8, 0,
                          db_win_reserved_func,0,0);
  sqlite3_create_function(db, "url_nouser", 1, SQLITE_UTF8, 0,
                          url_nouser_func,0,0);
  sqlite3_create_function(db, "chat_msg_from_event", 4,
        SQLITE_UTF8 | SQLITE_INNOCUOUS, 0,
        chat_msg_from_event, 0, 0);

}

#if USE_SEE
/*
** This is a pointer to the saved database encryption key string.
*/
static char *zSavedKey = 0;

/*
** This is the size of the saved database encryption key, in bytes.
*/
static size_t savedKeySize = 0;

/*
** This function returns non-zero if there is a saved database encryption
** key available.
*/
int db_have_saved_encryption_key(){
  return db_is_valid_saved_encryption_key(zSavedKey, savedKeySize);
}

/*
** This function returns non-zero if the specified database encryption key
** is valid.
*/
int db_is_valid_saved_encryption_key(const char *p, size_t n){
  if( p==0 ) return 0;
  if( n==0 ) return 0;
  if( p[0]==0 ) return 0;
  return 1;
}

/*
** This function returns the saved database encryption key -OR- zero if
** no database encryption key is saved.
*/
char *db_get_saved_encryption_key(){
  return zSavedKey;
}

/*
** This function returns the size of the saved database encryption key
** -OR- zero if no database encryption key is saved.
*/
size_t db_get_saved_encryption_key_size(){
  return savedKeySize;
}

/*
** This function arranges for the saved database encryption key buffer
** to be allocated and then sets up the environment variable to allow
** a child process to initialize it with the actual database encryption
** key.
*/
void db_setup_for_saved_encryption_key(){
  void *p = NULL;
  size_t n = 0;
  size_t pageSize = 0;
  Blob pidKey;

  assert( !db_have_saved_encryption_key() );
  db_unsave_encryption_key();
  fossil_get_page_size(&pageSize);
  assert( pageSize>0 );
  p = fossil_secure_alloc_page(&n);
  assert( p!=NULL );
  assert( n==pageSize );
  blob_zero(&pidKey);
  blob_appendf(&pidKey, "%lu:%p:%u", (unsigned long)GETPID(), p, n);
  fossil_setenv("FOSSIL_SEE_PID_KEY", blob_str(&pidKey));
  zSavedKey = p;
  savedKeySize = n;
}

/*
** This function arranges for the database encryption key to be securely
** saved in non-pagable memory (on platforms where this is possible).
*/
static void db_save_encryption_key(
  Blob *pKey
){
  void *p = NULL;
  size_t n = 0;
  size_t pageSize = 0;
  size_t blobSize = 0;

  assert( !db_have_saved_encryption_key() );
  blobSize = blob_size(pKey);
  if( blobSize==0 ) return;
  fossil_get_page_size(&pageSize);
  assert( pageSize>0 );
  if( blobSize>pageSize ){
    fossil_panic("key blob too large: %u versus %u", blobSize, pageSize);
  }
  p = fossil_secure_alloc_page(&n);
  assert( p!=NULL );
  assert( n==pageSize );
  assert( n>=blobSize );
  memcpy(p, blob_str(pKey), blobSize);
  zSavedKey = p;
  savedKeySize = n;
}

/*
** This function arranges for the saved database encryption key to be
** securely zeroed, unlocked (if necessary), and freed.
*/
void db_unsave_encryption_key(){
  fossil_secure_free_page(zSavedKey, savedKeySize);
  zSavedKey = NULL;
  savedKeySize = 0;
}

/*
** This function sets the saved database encryption key to the specified
** string value, allocating or freeing the underlying memory if needed.
*/
static void db_set_saved_encryption_key(
  Blob *pKey
){
  if( zSavedKey!=NULL ){
    size_t blobSize = blob_size(pKey);
    if( blobSize==0 ){
      db_unsave_encryption_key();
    }else{
      if( blobSize>savedKeySize ){
        fossil_panic("key blob too large: %u versus %u",
                     blobSize, savedKeySize);
      }
      fossil_secure_zero(zSavedKey, savedKeySize);
      memcpy(zSavedKey, blob_str(pKey), blobSize);
    }
  }else{
    db_save_encryption_key(pKey);
  }
}

/*
** WEBPAGE: setseekey
**
** Sets the sets the saved database encryption key to one that gets passed
** via the "key" query string parameter.  If the saved database encryption
** key has already been set, does nothing.  This web page does not produce
** any output on success or failure.  No permissions are required and none
** are checked (partially due to lack of encrypted database access).
**
** Query parameters:
**
**   key                 The string to set as the saved database encryption
**                       key.
*/
void db_set_see_key_page(void){
  Blob key;
  const char *zKey;
  if( db_have_saved_encryption_key() ){
    fossil_trace("SEE: encryption key was already set\n");
    return;
  }
  zKey = P("key");
  blob_init(&key, 0, 0);
  if( zKey!=0 ){
    PID_T processId;
    blob_set(&key, zKey);
    db_set_saved_encryption_key(&key);
    processId = db_maybe_handle_saved_encryption_key_for_process(
      SEE_KEY_WRITE
    );
    fossil_trace("SEE: set encryption key for process %lu, length %u\n",
                 (unsigned long)processId, blob_size(&key));
  }else{
    fossil_trace("SEE: no encryption key specified\n");
  }
  blob_reset(&key);
}

/*
** WEBPAGE: unsetseekey
**
** Sets the saved database encryption key to zeros in the current and parent
** Fossil processes.  This web page does not produce any output on success
** or failure.  Setup permission is required.
*/
void db_unset_see_key_page(void){
  PID_T processId;
  login_check_credentials();
  if( !g.perm.Setup ){ login_needed(0); return; }
  processId = db_maybe_handle_saved_encryption_key_for_process(
    SEE_KEY_ZERO
  );
  fossil_trace("SEE: unset encryption key for process %lu\n",
               (unsigned long)processId);
}

/*
** This function reads the saved database encryption key from the
** specified Fossil parent process.  This is only necessary (or
** functional) on Windows or Linux.
*/
static void db_read_saved_encryption_key_from_process(
  PID_T processId, /* Identifier for Fossil parent process. */
  LPVOID pAddress, /* Pointer to saved key buffer in the parent process. */
  SIZE_T nSize     /* Size of saved key buffer in the parent process. */
){
  void *p = NULL;
  size_t n = 0;
  size_t pageSize = 0;

  fossil_get_page_size(&pageSize);
  assert( pageSize>0 );
  if( nSize>pageSize ){
    fossil_panic("key too large: %u versus %u", nSize, pageSize);
  }
  p = fossil_secure_alloc_page(&n);
  assert( p!=NULL );
  assert( n==pageSize );
  assert( n>=nSize );
  {
#if defined(_WIN32)
    HANDLE hProcess = OpenProcess(PROCESS_VM_READ, FALSE, processId);
    if( hProcess!=NULL ){
      SIZE_T nRead = 0;
      if( ReadProcessMemory(hProcess, pAddress, p, nSize, &nRead) ){
        CloseHandle(hProcess);
        if( nRead==nSize ){
          db_unsave_encryption_key();
          zSavedKey = p;
          savedKeySize = n;
        }else{
          fossil_secure_free_page(p, n);
          fossil_panic("bad size read, %u out of %u bytes at %p from pid %lu",
                       nRead, nSize, pAddress, processId);
        }
      }else{
        CloseHandle(hProcess);
        fossil_secure_free_page(p, n);
        fossil_panic("failed read, %u bytes at %p from pid %lu: %lu", nSize,
                     pAddress, processId, GetLastError());
      }
    }else{
      fossil_secure_free_page(p, n);
      fossil_panic("failed to open pid %lu: %lu", processId, GetLastError());
    }
#elif defined(__linux__)
    ssize_t nRead;
    struct iovec liov = {0};
    struct iovec riov = {0};
    liov.iov_base = p;
    liov.iov_len = n;
    riov.iov_base = pAddress;
    riov.iov_len = nSize;
    nRead = process_vm_readv(processId, &liov, 1, &riov, 1, 0);
    if( nRead==nSize ){
      db_unsave_encryption_key();
      zSavedKey = p;
      savedKeySize = n;
    }else{
      fossil_secure_free_page(p, n);
      fossil_panic("bad size read, %zd out of %zu bytes at %p from pid %lu",
                   nRead, nSize, pAddress, (unsigned long)processId);
    }
#else
    fossil_secure_free_page(p, n);
    fossil_trace("db_read_saved_encryption_key_from_process unsupported");
#endif
  }
}

/*
** This function writes the saved database encryption key into the
** specified Fossil parent process.  This is only necessary (or
** functional) on Windows or Linux.
*/
static void db_write_saved_encryption_key_to_process(
  PID_T processId, /* Identifier for Fossil parent process. */
  LPVOID pAddress, /* Pointer to saved key buffer in the parent process. */
  SIZE_T nSize     /* Size of saved key buffer in the parent process. */
){
  void *p = db_get_saved_encryption_key();
  size_t n = db_get_saved_encryption_key_size();
  size_t pageSize = 0;

  fossil_get_page_size(&pageSize);
  assert( pageSize>0 );
  if( nSize>pageSize ){
    fossil_panic("key too large: %u versus %u", nSize, pageSize);
  }
  assert( p!=NULL );
  assert( n==pageSize );
  assert( n>=nSize );
  {
#if defined(_WIN32)
    HANDLE hProcess = OpenProcess(PROCESS_VM_OPERATION|PROCESS_VM_WRITE,
                                  FALSE, processId);
    if( hProcess!=NULL ){
      SIZE_T nWrite = 0;
      if( WriteProcessMemory(hProcess, pAddress, p, nSize, &nWrite) ){
        CloseHandle(hProcess);
        if( nWrite!=nSize ){
          fossil_panic("bad size write, %u out of %u bytes at %p from pid %lu",
                       nWrite, nSize, pAddress, processId);
        }
      }else{
        CloseHandle(hProcess);
        fossil_panic("failed write, %u bytes at %p from pid %lu: %lu", nSize,
                     pAddress, processId, GetLastError());
      }
    }else{
      fossil_panic("failed to open pid %lu: %lu", processId, GetLastError());
    }
#elif defined(__linux__)
    ssize_t nWrite;
    struct iovec liov = {0};
    struct iovec riov = {0};
    liov.iov_base = p;
    liov.iov_len = n;
    riov.iov_base = pAddress;
    riov.iov_len = nSize;
    nWrite = process_vm_writev(processId, &liov, 1, &riov, 1, 0);
    if( nWrite!=nSize ){
      fossil_panic("bad size write, %zd out of %zu bytes at %p from pid %lu",
                   nWrite, nSize, pAddress, (unsigned long)processId);
    }
#else
    fossil_trace("db_write_saved_encryption_key_to_process unsupported");
#endif
  }
}

/*
** This function zeros the saved database encryption key in the specified
** Fossil parent process.  This is only necessary (or functional) on
** Windows or Linux.
*/
static void db_zero_saved_encryption_key_in_process(
  PID_T processId, /* Identifier for Fossil parent process. */
  LPVOID pAddress, /* Pointer to saved key buffer in the parent process. */
  SIZE_T nSize     /* Size of saved key buffer in the parent process. */
){
  void *p = NULL;
  size_t n = 0;
  size_t pageSize = 0;

  fossil_get_page_size(&pageSize);
  assert( pageSize>0 );
  if( nSize>pageSize ){
    fossil_panic("key too large: %u versus %u", nSize, pageSize);
  }
  p = fossil_secure_alloc_page(&n);
  assert( p!=NULL );
  assert( n==pageSize );
  assert( n>=nSize );
  {
#if defined(_WIN32)
    HANDLE hProcess = OpenProcess(PROCESS_VM_OPERATION|PROCESS_VM_WRITE,
                                  FALSE, processId);
    if( hProcess!=NULL ){
      SIZE_T nWrite = 0;
      if( WriteProcessMemory(hProcess, pAddress, p, nSize, &nWrite) ){
        CloseHandle(hProcess);
        fossil_secure_free_page(p, n);
        if( nWrite!=nSize ){
          fossil_panic("bad size zero, %u out of %u bytes at %p from pid %lu",
                       nWrite, nSize, pAddress, processId);
        }
      }else{
        CloseHandle(hProcess);
        fossil_secure_free_page(p, n);
        fossil_panic("failed zero, %u bytes at %p from pid %lu: %lu", nSize,
                     pAddress, processId, GetLastError());
      }
    }else{
      fossil_secure_free_page(p, n);
      fossil_panic("failed to open pid %lu: %lu", processId, GetLastError());
    }
#elif defined(__linux__)
    ssize_t nWrite;
    struct iovec liov = {0};
    struct iovec riov = {0};
    liov.iov_base = p;
    liov.iov_len = n;
    riov.iov_base = pAddress;
    riov.iov_len = nSize;
    nWrite = process_vm_writev(processId, &liov, 1, &riov, 1, 0);
    if( nWrite!=nSize ){
      fossil_secure_free_page(p, n);
      fossil_panic("bad size zero, %zd out of %zu bytes at %p from pid %lu",
                   nWrite, nSize, pAddress, (unsigned long)processId);
    }
#else
    fossil_secure_free_page(p, n);
    fossil_trace("db_zero_saved_encryption_key_in_process unsupported");
#endif
  }
}

/*
** This function evaluates the specified TH1 script and attempts to parse
** its result as a colon-delimited triplet containing a process identifier,
** address, and size (in bytes) of the database encryption key.  This is
** only necessary (or functional) on Windows or Linux.
*/
static PID_T db_handle_saved_encryption_key_for_process_via_th1(
  const char *zConfig, /* The TH1 script to evaluate. */
  int eType            /* Non-zero to write key to parent process -OR-
                        * zero to read it from the parent process. */
){
  PID_T processId = 0;
  int rc;
  char *zResult;
  char *zPwd = file_getcwd(0, 0);
  Th_FossilInit(TH_INIT_DEFAULT | TH_INIT_NEED_CONFIG | TH_INIT_NO_REPO);
  rc = Th_Eval(g.interp, 0, zConfig, -1);
  zResult = (char*)Th_GetResult(g.interp, 0);
  if( rc!=TH_OK ){
    fossil_fatal("script for pid key failed: %s", zResult);
  }
  if( zResult ){
    LPVOID pAddress = NULL;
    SIZE_T nSize = 0;
    parse_pid_key_value(zResult, &processId, &pAddress, &nSize);
    if( eType==SEE_KEY_READ ){
      db_read_saved_encryption_key_from_process(processId, pAddress, nSize);
    }else if( eType==SEE_KEY_WRITE ){
      db_write_saved_encryption_key_to_process(processId, pAddress, nSize);
    }else if( eType==SEE_KEY_ZERO ){
      db_zero_saved_encryption_key_in_process(processId, pAddress, nSize);
    }else{
      fossil_panic("unsupported SEE key operation %d", eType);
    }
  }
  file_chdir(zPwd, 0);
  fossil_free(zPwd);
  return processId;
}

/*
** This function sets the saved database encryption key to one that gets
** read from the specified Fossil parent process, if applicable.  This is
** only necessary (or functional) on Windows or Linux.
*/
PID_T db_maybe_handle_saved_encryption_key_for_process(int eType){
  PID_T processId = 0;
  g.zPidKey = find_option("usepidkey",0,1);
  if( !g.zPidKey ){
    g.zPidKey = fossil_getenv("FOSSIL_SEE_PID_KEY");
  }
  if( g.zPidKey ){
    LPVOID pAddress = NULL;
    SIZE_T nSize = 0;
    parse_pid_key_value(g.zPidKey, &processId, &pAddress, &nSize);
    if( eType==SEE_KEY_READ ){
      db_read_saved_encryption_key_from_process(processId, pAddress, nSize);
    }else if( eType==SEE_KEY_WRITE ){
      db_write_saved_encryption_key_to_process(processId, pAddress, nSize);
    }else if( eType==SEE_KEY_ZERO ){
      db_zero_saved_encryption_key_in_process(processId, pAddress, nSize);
    }else{
      fossil_panic("unsupported SEE key operation %d", eType);
    }
  }else{
    const char *zSeeDbConfig = find_option("seedbcfg",0,1);
    if( !zSeeDbConfig ){
      zSeeDbConfig = fossil_getenv("FOSSIL_SEE_DB_CONFIG");
    }
    if( zSeeDbConfig ){
      processId = db_handle_saved_encryption_key_for_process_via_th1(
        zSeeDbConfig, eType
      );
    }
  }
  return processId;
}
#endif /* USE_SEE */

/*
** If the database file zDbFile has a name that suggests that it is
** encrypted, then prompt for the database encryption key and return it
** in the blob *pKey.  Or, if the encryption key has previously been
** requested, just return a copy of the previous result.  The blob in
** *pKey must be initialized.
*/
static void db_maybe_obtain_encryption_key(
  const char *zDbFile,   /* Name of the database file */
  Blob *pKey             /* Put the encryption key here */
){
#if USE_SEE
  if( sqlite3_strglob("*.efossil", zDbFile)==0 ){
    char *zKey = db_get_saved_encryption_key();
    if( zKey ){
      blob_set(pKey, zKey);
    }else{
      char *zPrompt = mprintf("\rencryption key for '%s': ", zDbFile);
      prompt_for_password(zPrompt, pKey, 0);
      fossil_free(zPrompt);
      db_set_saved_encryption_key(pKey);
    }
  }
#endif
}


/*
** Sets the encryption key for the database, if necessary.
*/
void db_maybe_set_encryption_key(sqlite3 *db, const char *zDbName){
  Blob key;
  blob_init(&key, 0, 0);
  db_maybe_obtain_encryption_key(zDbName, &key);
  if( blob_size(&key)>0 ){
    if( fossil_getenv("FOSSIL_USE_SEE_TEXTKEY")==0 ){
      char *zCmd = sqlite3_mprintf("PRAGMA key(%Q)", blob_str(&key));
      sqlite3_exec(db, zCmd, 0, 0, 0);
      fossil_secure_zero(zCmd, strlen(zCmd));
      sqlite3_free(zCmd);
#if USE_SEE
    }else{
      sqlite3_key(db, blob_str(&key), -1);
#endif
    }
  }
  blob_reset(&key);
}

/*
** Open a database file.  Return a pointer to the new database
** connection.  An error results in process abort.
*/
static sqlite3 *openDatabase(const char *zDbName){
LOCAL sqlite3 *db_open(const char *zDbName){
  int rc;
  const char *zVfs;
  sqlite3 *db;
  Blob bNameCheck = BLOB_INITIALIZER;

  zVfs = getenv("FOSSIL_VFS");
#ifdef __MINGW32__
  zDbName = sqlite3_win32_mbcs_to_utf8(zDbName);
#endif
  if( g.fSqlTrace ) fossil_trace("-- sqlite3_open: [%s]\n", zDbName);
  file_canonical_name(zDbName, &bNameCheck, 0)
    /* For purposes of the apndvfs check, g.nameOfExe and zDbName must
    ** both be canonicalized, else chances are very good that they
    ** will not match even if they're the same file. Details:
    ** https://fossil-scm.org/forum/forumpost/16880a28aad1a868 */;
  if( strcmp(blob_str(&bNameCheck), g.nameOfExe)==0 ){
    extern int sqlite3_appendvfs_init(
      sqlite3 *, char **, const sqlite3_api_routines *
    );
    sqlite3_appendvfs_init(0,0,0);
    g.zVfsName = "apndvfs";
  }
  blob_zero(&bNameCheck);
  rc = sqlite3_open_v2(
       zDbName, &db,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       zVfs
       g.zVfsName
  );
  if( rc!=SQLITE_OK ){
    db_err(sqlite3_errmsg(db));
    db_err("[%s]: %s", zDbName, sqlite3_errmsg(db));
  }
  db_maybe_set_encryption_key(db, zDbName);
  sqlite3_db_config(db, SQLITE_DBCONFIG_ENABLE_FKEY, 0, &rc);
  sqlite3_db_config(db, SQLITE_DBCONFIG_ENABLE_TRIGGER, 0, &rc);
  sqlite3_db_config(db, SQLITE_DBCONFIG_TRUSTED_SCHEMA, 0, &rc);
  sqlite3_db_config(db, SQLITE_DBCONFIG_DQS_DDL, 0, &rc);
  sqlite3_db_config(db, SQLITE_DBCONFIG_DQS_DML, 0, &rc);
  sqlite3_db_config(db, SQLITE_DBCONFIG_DEFENSIVE, 1, &rc);
  sqlite3_busy_timeout(db, 5000); 
  sqlite3_busy_timeout(db, 15000);
  sqlite3_wal_autocheckpoint(db, 1);  /* Set to checkpoint frequently */
  sqlite3_create_function(db, "user", 0, SQLITE_UTF8, 0, db_sql_user, 0, 0);
  sqlite3_create_function(db, "cgi", 1, SQLITE_UTF8, 0, db_sql_cgi, 0, 0);
  sqlite3_create_function(db, "cgi", 2, SQLITE_UTF8, 0, db_sql_cgi, 0, 0);
  sqlite3_create_function(db, "print", -1, SQLITE_UTF8, 0,db_sql_print,0,0);
  sqlite3_create_function(
    db, "is_selected", 1, SQLITE_UTF8, 0, file_is_selected,0,0
  );
  sqlite3_create_function(
    db, "if_selected", 3, SQLITE_UTF8, 0, file_is_selected,0,0
  );
  if( g.fSqlTrace ) sqlite3_trace_v2(db, SQLITE_TRACE_PROFILE, db_sql_trace, 0);
  db_add_aux_functions(db);
  re_add_sql_func(db);  /* The REGEXP operator */
  foci_register(db);    /* The "files_of_checkin" virtual table */
  sqlite3_set_authorizer(db, db_top_authorizer, db);
  db_register_fts5(db) /* in search.c */;
  return db;
}


/*
** Detaches the zLabel database.
*/
void db_detach(const char *zLabel){
  db_multi_exec("DETACH DATABASE %Q", zLabel);
}

/*
** zDbName is the name of a database file.  Attach zDbName using
** the name zLabel.
*/
void db_attach(const char *zDbName, const char *zLabel){
  Blob key;
  if( db_table_exists(zLabel,"sqlite_schema") ) return;
  blob_init(&key, 0, 0);
  db_maybe_obtain_encryption_key(zDbName, &key);
  if( fossil_getenv("FOSSIL_USE_SEE_TEXTKEY")==0 ){
    char *zCmd = sqlite3_mprintf("ATTACH DATABASE %Q AS %Q KEY %Q",
                                 zDbName, zLabel, blob_str(&key));
    db_exec_sql(zCmd);
    fossil_secure_zero(zCmd, strlen(zCmd));
    sqlite3_free(zCmd);
  }else{
    char *zCmd = sqlite3_mprintf("ATTACH DATABASE %Q AS %Q KEY ''",
                                 zDbName, zLabel);
    db_exec_sql(zCmd);
    sqlite3_free(zCmd);
#if USE_SEE
    if( blob_size(&key)>0 ){
      sqlite3_key_v2(g.db, zLabel, blob_str(&key), -1);
    }
#endif
  }
  blob_reset(&key);
}

/*
** Change the schema name of the "main" database to zLabel.
** zLabel must be a static string that is unchanged for the life of
** the database connection.
**
** After calling this routine, db_database_slot(zLabel) should
** return 0.
*/
void db_set_main_schemaname(sqlite3 *db, const char *zLabel){
  if( sqlite3_db_config(db, SQLITE_DBCONFIG_MAINDBNAME, zLabel) ){
    fossil_panic("Fossil requires a version of SQLite that supports the "
                 "SQLITE_DBCONFIG_MAINDBNAME interface.");
  }
}

/*
** Return the slot number for database zLabel.  The first database
** opened is slot 0.  The "temp" database is slot 1.  Attached databases
** are slots 2 and higher.
**
** Return -1 if zLabel does not match any open database.
*/
int db_database_slot(const char *zLabel){
  int iSlot = -1;
  int rc;
  Stmt q;
  if( g.db==0 ) return iSlot;
  rc = db_prepare_ignore_error(&q, "PRAGMA database_list");
  if( rc==SQLITE_OK ){
    while( db_step(&q)==SQLITE_ROW ){
      if( fossil_strcmp(db_column_text(&q,1),zLabel)==0 ){
        iSlot = db_column_int(&q, 0);
        break;
      }
    }
  }
  db_finalize(&q);
  return iSlot;
}

/*
** zDbName is the name of a database file.  If no other database
** file is open, then open this one.  If another database file is
** already open, then attach zDbName using the name zLabel.
*/
void db_open_or_attach(const char *zDbName, const char *zLabel){
  if( !g.db ){
    g.db = openDatabase(zDbName);
    db_connection_init();
    g.db = db_open(zDbName);
    db_set_main_schemaname(g.db, zLabel);
  }else{
    db_attach(zDbName, zLabel);
  }
}
#ifdef __MINGW32__
    zDbName = sqlite3_win32_mbcs_to_utf8(zDbName);
#endif

/*
** Close the per-user configuration database file
*/
void db_close_config(){
  int iSlot = db_database_slot("configdb");
  if( iSlot>0 ){
    db_detach("configdb");
  }else if( g.dbConfig ){
    sqlite3_wal_checkpoint(g.dbConfig, 0);
    sqlite3_close(g.dbConfig);
    g.dbConfig = 0;
  }else if( g.db && 0==iSlot ){
    int rc;
    sqlite3_wal_checkpoint(g.db, 0);
    rc = sqlite3_close(g.db);
    if( g.fSqlTrace ) fossil_trace("-- db_close_config(%d)\n", rc);
    g.db = 0;
    g.repositoryOpen = 0;
    g.localOpen = 0;
    db_multi_exec("ATTACH DATABASE %Q AS %s", zDbName, zLabel);
  }else{
    return;
  }
  fossil_free(g.zConfigDbName);
  g.zConfigDbName = 0;
}

/*
** Compute the name of the configuration database.  If unable to find the
** database, return 0 if isOptional is true, or panic if isOptional is false.
**
** Space to hold the result comes from fossil_malloc().
*/
static char *db_configdb_name(int isOptional){
  char *zHome;        /* Home directory */
  char *zDbName;      /* Name of the database file */


  /* On Windows, look for these directories, in order:
  **
  **    FOSSIL_HOME
  **    LOCALAPPDATA
  **    APPDATA
  **    USERPROFILE
  **    HOMEDRIVE HOMEPATH
  */
#if defined(_WIN32) || defined(__CYGWIN__)
  zHome = fossil_getenv("FOSSIL_HOME");
  if( zHome==0 ){
    zHome = fossil_getenv("LOCALAPPDATA");
    if( zHome==0 ){
      zHome = fossil_getenv("APPDATA");
      if( zHome==0 ){
        zHome = fossil_getenv("USERPROFILE");
        if( zHome==0 ){
          char *zDrive = fossil_getenv("HOMEDRIVE");
          char *zPath = fossil_getenv("HOMEPATH");
          if( zDrive && zPath ) zHome = mprintf("%s%s", zDrive, zPath);
        }
      }
    }
  }
  zDbName = mprintf("%//_fossil", zHome);
  fossil_free(zHome);
  return zDbName;

#else /* if unix */
  char *zXdgHome;

  /* For unix. a 5-step algorithm is used.
  ** See ../www/tech_overview.wiki for discussion.
  **
  ** Step 1:  If FOSSIL_HOME exists -> $FOSSIL_HOME/.fossil
  */
  zHome = fossil_getenv("FOSSIL_HOME");
  if( zHome!=0 ) return mprintf("%s/.fossil", zHome);

  /* Step 2:  If HOME exists and file $HOME/.fossil exists -> $HOME/.fossil
  */
  zHome = fossil_getenv("HOME");
  if( zHome ){
    zDbName = mprintf("%s/.fossil", zHome);
    if( file_size(zDbName, ExtFILE)>1024*3 ){
      return zDbName;
    }
    fossil_free(zDbName);
  }

  /* Step 3: if XDG_CONFIG_HOME exists -> $XDG_CONFIG_HOME/fossil.db
  */
  zXdgHome = fossil_getenv("XDG_CONFIG_HOME");
  if( zXdgHome!=0 ){
    return mprintf("%s/fossil.db", zXdgHome);
  }

  /* The HOME variable is required in order to continue.
  */
  if( zHome==0 ){
    if( isOptional ) return 0;
    fossil_fatal("cannot locate home directory - please set one of the "
                 "FOSSIL_HOME, XDG_CONFIG_HOME, or HOME environment "
                 "variables");
  }

  /* Step 4: If $HOME/.config is a directory -> $HOME/.config/fossil.db
  */
  zXdgHome = mprintf("%s/.config", zHome);
  if( file_isdir(zXdgHome, ExtFILE)==1 ){
    fossil_free(zXdgHome);
    return mprintf("%s/.config/fossil.db", zHome);
  }

  /* Step 5: Otherwise -> $HOME/.fossil
  */
  return mprintf("%s/.fossil", zHome);
#endif /* unix */
}

/*
** Open the user database in "~/.fossil".  Create the database anew if
** Open the configuration database.  Create the database anew if
** it does not already exist.
**
** If the useAttach flag is 0 (the usual case) then the user database is
** opened on a separate database connection g.dbConfig.  This prevents
** the ~/.fossil database from becoming locked on long check-in or sync
** If the useAttach flag is 0 (the usual case) then the configuration
** database is opened on a separate database connection g.dbConfig.
** This prevents the database from becoming locked on long check-in or sync
** operations which hold an exclusive transaction.  In a few cases, though,
** it is convenient for the ~/.fossil to be attached to the main database
** it is convenient for the database to be attached to the main database
** connection so that we can join between the various databases.  In that
** case, invoke this routine with useAttach as 1.
*/
void db_open_config(int useAttach){
int db_open_config(int useAttach, int isOptional){
  char *zDbName;
  const char *zHome;
  if( g.configOpen ) return;
  if( g.zConfigDbName ){
    int alreadyAttached = db_database_slot("configdb")>0;
    if( useAttach==alreadyAttached ) return 1; /* Already open. */
    db_close_config();
#ifdef __MINGW32__
  zHome = getenv("LOCALAPPDATA");
  if( zHome==0 ){
    zHome = getenv("APPDATA");
    if( zHome==0 ){
      zHome = getenv("HOMEPATH");
    }
  }
  }
  if( zHome==0 ){
  zDbName = db_configdb_name(isOptional);
  if( zDbName==0 ) return 0;
    fossil_fatal("cannot locate home directory - "
                "please set the HOMEPATH environment variable");
  }
#else
  zHome = getenv("HOME");
  if( file_size(zDbName, ExtFILE)<1024*3 ){
    char *zHome = file_dirname(zDbName);
  if( zHome==0 ){
    fossil_fatal("cannot locate home directory - "
                 "please set the HOME environment variable");
  }
#endif
  if( file_isdir(zHome)!=1 ){
    fossil_fatal("invalid home directory: %s", zHome);
  }
    int rc;
    if( file_isdir(zHome, ExtFILE)==0 ){
      file_mkdir(zHome, ExtFILE, 0);
    }
#ifndef __MINGW32__
  if( access(zHome, W_OK) ){
    fossil_fatal("home directory %s must be writeable", zHome);
  }
    rc = file_access(zHome, W_OK);
    if( rc ){
      if( isOptional ) return 0;
      fossil_fatal("home directory \"%s\" must be writeable", zHome);
    }
#endif
  g.zHome = mprintf("%/", zHome);
#ifdef __MINGW32__
  /* . filenames give some window systems problems and many apps problems */
  zDbName = mprintf("%//_fossil", zHome);
#else
  zDbName = mprintf("%s/.fossil", zHome);
#endif
  if( file_size(zDbName)<1024*3 ){
    db_init_database(zDbName, zConfigSchema, (char*)0);
    fossil_free(zHome);
  }
  g.useAttach = useAttach;
  if( file_access(zDbName, W_OK) ){
    if( isOptional ) return 0;
    fossil_fatal("configuration file %s must be writeable", zDbName);
  }
  if( useAttach ){
    db_open_or_attach(zDbName, "configdb");
    g.dbConfig = 0;
  }else{
    g.dbConfig = openDatabase(zDbName);
    g.dbConfig = db_open(zDbName);
    db_set_main_schemaname(g.dbConfig, "configdb");
  }
  g.zConfigDbName = zDbName;
  return 1;
}
  g.configOpen = 1;

/*
** Return TRUE if zTable exists.
*/
int db_table_exists(
  const char *zDb,      /* One of: NULL, "configdb", "localdb", "repository" */
  const char *zTable    /* Name of table */
){
  return sqlite3_table_column_metadata(g.db, zDb, zTable, 0,
                                       0, 0, 0, 0, 0)==SQLITE_OK;
}

/*
** Return TRUE if zTable exists and contains column zColumn.
** Return FALSE if zTable does not exist or if zTable exists
** but lacks zColumn.
*/
int db_table_has_column(
  const char *zDb,       /* One of: NULL, "config", "localdb", "repository" */
  const char *zTable,    /* Name of table */
  const char *zColumn    /* Name of column in table */
){
  return sqlite3_table_column_metadata(g.db, zDb, zTable, zColumn,
                                       0, 0, 0, 0, 0)==SQLITE_OK;
}

/*
** Returns TRUE if zTable exists in the local database but lacks column
** zColumn
*/
static int db_local_table_exists_but_lacks_column(
  const char *zTable,
  const char *zColumn
){
  return db_table_exists("localdb", zTable)
      && !db_table_has_column("localdb", zTable, zColumn);
}

/*
** If zDbName is a valid local database file, open it and return
** true.  If it is not a valid local database file, return 0.
*/
static int isValidLocalDb(const char *zDbName){
  i64 lsize;
  int rc;
  sqlite3_stmt *pStmt;

  if( access(zDbName, F_OK) ) return 0;
  lsize = file_size(zDbName);
  if( file_access(zDbName, F_OK) ) return 0;
  lsize = file_size(zDbName, ExtFILE);
  if( lsize%1024!=0 || lsize<4096 ) return 0;
  db_open_or_attach(zDbName, "localdb");
  g.localOpen = 1;
  db_open_config(0);
  db_open_repository(0);

  /* Check to see if the check-out database has the lastest schema changes.
  ** The most recent schema change (2019-01-19) is the addition of the
  ** vmerge.mhash and vfile.mhash fields.  If the schema has the vmerge.mhash
  ** column, assume everything else is up-to-date.
  */
  if( db_table_has_column("localdb","vmerge","mhash") ){
    return 1;   /* This is a check-out database with the latest schema */
  }

  /* If there is no vfile table, then assume we have picked up something
  ** that is not even close to being a valid check-out database */
  if( !db_table_exists("localdb","vfile") ){
    return 0;  /* Not a  DB */
  }

  /* If the "isexe" column is missing from the vfile table, then
  ** add it now.   This code added on 2010-03-06.  After all users have
  ** upgraded, this code can be safely deleted. 
  ** upgraded, this code can be safely deleted.
  */
  rc = sqlite3_prepare(g.db, "SELECT isexe FROM vfile", -1, &pStmt, 0);
  if( !db_table_has_column("localdb","vfile","isexe") ){
  sqlite3_finalize(pStmt);
  if( rc==SQLITE_ERROR ){
    sqlite3_exec(g.db, "ALTER TABLE vfile ADD COLUMN isexe BOOLEAN", 0, 0, 0);
    db_multi_exec("ALTER TABLE vfile ADD COLUMN isexe BOOLEAN DEFAULT 0");
  }

#if 0
  /* If the "mtime" column is missing from the vfile table, then
  ** add it now.   This code added on 2008-12-06.  After all users have
  ** upgraded, this code can be safely deleted. 
  /* If "islink"/"isLink" columns are missing from tables, then
  ** add them now.   This code added on 2011-01-17 and 2011-08-27.
  ** After all users have upgraded, this code can be safely deleted.
  */
  rc = sqlite3_prepare(g.db, "SELECT mtime FROM vfile", -1, &pStmt, 0);
  if( !db_table_has_column("localdb","vfile","isLink") ){
  sqlite3_finalize(pStmt);
  if( rc==SQLITE_ERROR ){
    sqlite3_exec(g.db, "ALTER TABLE vfile ADD COLUMN mtime INTEGER", 0, 0, 0);
  }
    db_multi_exec("ALTER TABLE vfile ADD COLUMN islink BOOLEAN DEFAULT 0");
    if( db_local_table_exists_but_lacks_column("stashfile", "isLink") ){
      db_multi_exec("ALTER TABLE stashfile ADD COLUMN isLink BOOL DEFAULT 0");
    }
#endif

    if( db_local_table_exists_but_lacks_column("undo", "isLink") ){
      db_multi_exec("ALTER TABLE undo ADD COLUMN isLink BOOLEAN DEFAULT 0");
    }
#if 0
  /* If the "origname" column is missing from the vfile table, then
  ** add it now.   This code added on 2008-11-09.  After all users have
  ** upgraded, this code can be safely deleted. 
  */
  rc = sqlite3_prepare(g.db, "SELECT origname FROM vfile", -1, &pStmt, 0);
    if( db_local_table_exists_but_lacks_column("undo_vfile", "islink") ){
  sqlite3_finalize(pStmt);
  if( rc==SQLITE_ERROR ){
    sqlite3_exec(g.db, "ALTER TABLE vfile ADD COLUMN origname TEXT", 0, 0, 0);
  }
      db_multi_exec("ALTER TABLE undo_vfile ADD COLUMN islink BOOL DEFAULT 0");
    }
#endif

  }

  /* The design of the check-out database changed on 2019-01-19 adding the mhash
  ** column to vfile and vmerge and changing the UNIQUE index on vmerge into
  ** a PRIMARY KEY that includes the new mhash column.  However, we must have
  ** the repository database at hand in order to do the migration, so that
  ** step is deferred. */
  return 1;
}

/*
** Locate the root directory of the local repository tree.  The root
** directory is found by searching for a file named "_FOSSIL_" or ".fos"
** directory is found by searching for a file named "_FOSSIL_" or ".fslckout"
** that contains a valid repository database.
**
** For legacy, also look for ".fos".  The use of ".fos" is deprecated
** since "fos" has negative connotations in Hungarian, we are told.
**
** If no valid _FOSSIL_ or .fos file is found, we move up one level and 
** If no valid _FOSSIL_ or .fslckout file is found, we move up one level and
** try again. Once the file is found, the g.zLocalRoot variable is set
** to the root of the repository tree and this routine returns 1.  If
** no database is found, then this routine return 0.
**
** In db_open_local_v2(), if the bRootOnly flag is true, then only
** look in the CWD for the check-out database.  Do not scan upwards in
** the file hierarchy.
**
** This routine always opens the user database regardless of whether or
** not the repository database is found.  If the _FOSSIL_ or .fos file
** not the repository database is found.  If the _FOSSIL_ or .fslckout file
** is found, it is attached to the open database connection too.
*/
int db_open_local(void){
int db_open_local_v2(const char *zDbName, int bRootOnly){
  int i, n;
  char zPwd[2000];
  char *zPwdConv;
  static const char *aDbName[] = { "/_FOSSIL_", "/.fos" };
  
  if( g.localOpen) return 1;
  if( getcwd(zPwd, sizeof(zPwd)-20)==0 ){
  static const char *(aDbName[]) = { "_FOSSIL_", ".fslckout", ".fos" };

  if( g.localOpen ) return 1;
  file_getcwd(zPwd, sizeof(zPwd)-20);
    db_err("pwd too big: max %d", sizeof(zPwd)-20);
  }
  n = strlen(zPwd);
  zPwdConv = mprintf("%/", zPwd);
  strncpy(zPwd, zPwdConv, 2000-20);
  free(zPwdConv);
  while( n>0 ){
    if( access(zPwd, W_OK) ) break;
    for(i=0; i<sizeof(aDbName)/sizeof(aDbName[0]); i++){
      strcpy(&zPwd[n], aDbName[i]);
    for(i=0; i<count(aDbName); i++){
      sqlite3_snprintf(sizeof(zPwd)-n, &zPwd[n], "/%s", aDbName[i]);
      if( isValidLocalDb(zPwd) ){
        if( db_open_config(0, 1)==0 ){
          return 0; /* Configuration could not be opened */
        }
        /* Found a valid checkout database file */
        /* Found a valid check-out database file */
        g.zLocalDbName = fossil_strdup(zPwd);
        zPwd[n] = 0;
        while( n>1 && zPwd[n-1]=='/' ){
        while( n>0 && zPwd[n-1]=='/' ){
          n--;
          zPwd[n] = 0;
        }
        g.zLocalRoot = mprintf("%s/", zPwd);
        g.localOpen = 1;
        db_open_repository(zDbName);
        return 1;
      }
    }
    if( bRootOnly ) break;
    n--;
    while( n>0 && zPwd[n]!='/' ){ n--; }
    while( n>0 && zPwd[n-1]=='/' ){ n--; }
    while( n>1 && zPwd[n]!='/' ){ n--; }
    while( n>1 && zPwd[n-1]=='/' ){ n--; }
    zPwd[n] = 0;
  }

  /* A checkout database file could not be found */
  /* A check-out database file could not be found */
  return 0;
}
int db_open_local(const char *zDbName){
  return db_open_local_v2(zDbName, 0);

}

/*
** Get the full pathname to the repository database file.  The
** local database (the _FOSSIL_ or .fslckout database) must have already
** been opened before this routine is called.
*/
const char *db_repository_filename(void){
  static char *zRepo = 0;
  assert( g.localOpen );
  assert( g.zLocalRoot );
  if( zRepo==0 ){
    zRepo = db_lget("repository", 0);
    if( zRepo && !file_is_absolute_path(zRepo) ){
      char * zFree = zRepo;
      zRepo = mprintf("%s%s", g.zLocalRoot, zRepo);
      fossil_free(zFree);
      zFree = zRepo;
      zRepo = file_canonical_name_dup(zFree);
      fossil_free(zFree);
    }
  }
  return zRepo;
}

/*
** Returns non-zero if support for symlinks is currently enabled.
*/
int db_allow_symlinks(void){
  return g.allowSymlinks;
}

/*
** Return TRUE if the file in the argument seems like it might be an
** SQLite database file that contains a Fossil repository schema.
*/
int db_looks_like_a_repository(const char *zDbName){
  sqlite3 *db = 0;
  i64 sz;
  int rc;
  int res = 0;
  sqlite3_stmt *pStmt = 0;

  sz = file_size(zDbName, ExtFILE);
  if( sz<16834 ) return 0;
  db = db_open(zDbName);
  if( !db ) return 0;
  if( !g.zVfsName && sz%512 ) return 0;
  rc = sqlite3_prepare_v2(db,
       "SELECT count(*) FROM sqlite_schema"
       " WHERE name COLLATE nocase IN"
       "('blob','delta','rcvfrom','user','config','mlink','plink');",
       -1, &pStmt, 0);
  if( rc ) goto is_repo_end;
  rc = sqlite3_step(pStmt);
  if( rc!=SQLITE_ROW ) goto is_repo_end;
  if( sqlite3_column_int(pStmt, 0)!=7 ) goto is_repo_end;
  res = 1;

is_repo_end:
  sqlite3_finalize(pStmt);
  sqlite3_close(db);
  return res;
}

/*
** COMMAND: test-is-repo
*/
void test_is_repo(void){
  int i;
  for(i=2; i<g.argc; i++){
    fossil_print("%s: %s\n",
       db_looks_like_a_repository(g.argv[i]) ? "yes" : " no",
       g.argv[i]
    );
  }
}


/*
** Open the repository database given by zDbName.  If zDbName==NULL then
** get the name from the already open local database.
*/
void db_open_repository(const char *zDbName){
  if( g.repositoryOpen ) return;
  if( zDbName==0 ){
    if( g.localOpen ){
      zDbName = db_lget("repository", 0);
      zDbName = db_repository_filename();
    }
    if( zDbName==0 ){
      db_err("unable to find the name of a repository database");
    }
  }
  if( access(zDbName, R_OK) || file_size(zDbName)<1024 ){
    if( access(zDbName, 0) ){
      fossil_panic("repository does not exist or"
  if( !db_looks_like_a_repository(zDbName) ){
    if( file_access(zDbName, F_OK) ){
#ifdef FOSSIL_ENABLE_JSON
      g.json.resultCode = FSL_JSON_E_DB_NOT_FOUND;
#endif
      fossil_fatal("repository does not exist or"
                   " is in an unreadable directory: %s", zDbName);
    }else if( access(zDbName, R_OK) ){
      fossil_panic("read permission denied for repository %s", zDbName);
    }else if( file_access(zDbName, R_OK) ){
#ifdef FOSSIL_ENABLE_JSON
      g.json.resultCode = FSL_JSON_E_DENIED;
#endif
      fossil_fatal("read permission denied for repository %s", zDbName);
    }else{
#ifdef FOSSIL_ENABLE_JSON
      g.json.resultCode = FSL_JSON_E_DB_NOT_VALID;
#endif
      fossil_panic("not a valid repository: %s", zDbName);
      fossil_fatal("not a valid repository: %s", zDbName);
    }
  }
  g.zRepositoryName = fossil_strdup(zDbName);
  db_open_or_attach(zDbName, "repository");
  db_open_or_attach(g.zRepositoryName, "repository");
  g.repositoryOpen = 1;
  sqlite3_file_control(g.db, "repository", SQLITE_FCNTL_DATA_VERSION,
                       &g.iRepoDataVers);
  g.zRepositoryName = mprintf("%s", zDbName);
}


  /* Cache "allow-symlinks" option, because we'll need it on every stat call */
  g.allowSymlinks = db_get_boolean("allow-symlinks",0);

  g.zAuxSchema = db_get("aux-schema","");
  g.eHashPolicy = db_get_int("hash-policy",-1);
  if( g.eHashPolicy<0 ){
    g.eHashPolicy = hname_default_policy();
    db_set_int("hash-policy", g.eHashPolicy, 0);
  }

#if 0  /* No longer automatic.  Need to run "fossil rebuild" to migrate */
  /* Make a change to the CHECK constraint on the BLOB table for
  ** version 2.0 and later.
  */
  rebuild_schema_update_2_0();   /* Do the Fossil-2.0 schema updates */
#endif

  /* Additional checks that occur when opening the check-out database */
  if( g.localOpen ){

    /* If the repository database that was just opened has been
    ** eplaced by a clone of the same project, with different RID
    ** values, then renumber the RID values stored in various tables
    ** of the check-out database, so that the repository and check-out
    ** databases align.
    */
    if( !db_fingerprint_ok() ){
      if( find_option("no-rid-adjust",0,0)!=0 ){
        /* The --no-rid-adjust command-line option bypasses the RID value
        ** updates. Intended for use during debugging, especially to be
        ** able to run "fossil sql" after a database swap. */
        fossil_print(
          "WARNING: repository change detected, but no adjust made.\n"
        );
      }else if( find_option("rid-renumber-dryrun",0,0)!=0 ){
        /* the --rid-renumber-dryrun option shows how RID values would be
        ** renumbered, but does not actually perform the renumbering.
        ** This is a debugging-only option. */
        vfile_rid_renumbering_event(1);
        exit(0);
      }else{
        char *z;
        stash_rid_renumbering_event();
        vfile_rid_renumbering_event(0);
        undo_reset();
        bisect_reset();
        z = db_fingerprint(0, 1);
        db_lset("fingerprint", z);
        fossil_free(z);
        fossil_print(
          "WARNING: The repository database has been replaced by a clone.\n"
          "Bisect history and undo have been lost.\n"
        );
      }
    }

    /* Make sure the check-out database schema migration of 2019-01-20
    ** has occurred.
    **
    ** The 2019-01-19 migration is the addition of the vmerge.mhash and
    ** vfile.mhash columns and making the vmerge.mhash column part of the
    ** PRIMARY KEY for vmerge.
    */
    if( !db_table_has_column("localdb", "vfile", "mhash") ){
      db_multi_exec("ALTER TABLE vfile ADD COLUMN mhash;");
      db_multi_exec(
        "UPDATE vfile"
        "   SET mhash=(SELECT uuid FROM blob WHERE blob.rid=vfile.mrid)"
        " WHERE mrid!=rid;"
      );
      if( !db_table_has_column("localdb", "vmerge", "mhash") ){
        db_exec_sql("ALTER TABLE vmerge RENAME TO old_vmerge;");
        db_exec_sql(zLocalSchemaVmerge);
        db_exec_sql(
           "INSERT OR IGNORE INTO vmerge(id,merge,mhash)"
           "  SELECT id, merge, blob.uuid FROM old_vmerge, blob"
           "   WHERE old_vmerge.merge=blob.rid;"
           "DROP TABLE old_vmerge;"
        );
      }
    }
  }
}

/*
** Return true if there have been any changes to the repository
** database since it was opened.
**
** Changes to "config" and "localdb" and "temp" do not count.
** This routine only returns true if there have been changes
** to "repository".
*/
int db_repository_has_changed(void){
  unsigned int v;
  if( !g.repositoryOpen ) return 0;
  sqlite3_file_control(g.db, "repository", SQLITE_FCNTL_DATA_VERSION, &v);
  return g.iRepoDataVers != v;
}

/*
** Flags for the db_find_and_open_repository() function.
*/
#if INTERFACE
#define OPEN_OK_NOT_FOUND       0x001   /* Do not error out if not found */
#define OPEN_ANY_SCHEMA         0x002   /* Do not error if schema is wrong */
#define OPEN_SUBSTITUTE         0x004   /* Fake in-memory repo if not found */
#endif

/*
** Try to find the repository and open it.  Use the -R or --repository
** option to locate the repository.  If no such option is available, then
** use the repository of the open checkout if there is one.
** use the repository of the open check-out if there is one.
**
** Error out if the repository cannot be opened.
*/
void db_find_and_open_repository(int errIfNotFound){
  const char *zRep = find_option("repository", "R", 1);
void db_find_and_open_repository(int bFlags, int nArgUsed){
  const char *zRep = find_repository_option();
  if( zRep && file_isdir(zRep, ExtFILE)==1 ){
    goto rep_not_found;
  }
  if( zRep==0 && nArgUsed && g.argc==nArgUsed+1 ){
    zRep = g.argv[nArgUsed];
  }
  if( zRep==0 ){
    if( db_open_local()==0 ){
    if( db_open_local(0)==0 ){
      goto rep_not_found;
    }
    zRep = db_lget("repository", 0);
    zRep = db_repository_filename();
    if( zRep==0 ){
      goto rep_not_found;
    }
  }
  db_open_repository(zRep);
  if( g.repositoryOpen ){
    if( (bFlags & OPEN_ANY_SCHEMA)==0 ) db_verify_schema();
    return;
  }
rep_not_found:
  if( bFlags & OPEN_OK_NOT_FOUND ){
    /* No errors if the database is not found */
    if( bFlags & OPEN_SUBSTITUTE ){
      db_create_repository(0);
    }
  }else{
#ifdef FOSSIL_ENABLE_JSON
    g.json.resultCode = FSL_JSON_E_DB_NOT_FOUND;
#endif
  if( errIfNotFound ){
    fossil_fatal("use --repository or -R to specify the repository database");
  }
}
    if( nArgUsed==0 ){
      fossil_fatal("use --repository or -R to specify the repository database");
    }else{
      fossil_fatal("specify the repository name as a command-line argument");
    }
  }
}

/*
** Return TRUE if the schema is out-of-date
*/
int db_schema_is_outofdate(void){
  return strcmp(g.zAuxSchema,AUX_SCHEMA_MIN)<0
      || strcmp(g.zAuxSchema,AUX_SCHEMA_MAX)>0;
}

/*
** Return true if the database is writeable
*/
int db_is_writeable(const char *zName){
  return g.db!=0 && !sqlite3_db_readonly(g.db, zName);
}

/*
** Verify that the repository schema is correct.  If it is not correct,
** issue a fatal error and die.
*/
void db_verify_schema(void){
  if( db_schema_is_outofdate() ){
#ifdef FOSSIL_ENABLE_JSON
    g.json.resultCode = FSL_JSON_E_DB_NEEDS_REBUILD;
#endif
    fossil_warning("incorrect repository schema version: "
          "current repository schema version is \"%s\" "
          "but need versions between \"%s\" and \"%s\".",
          g.zAuxSchema, AUX_SCHEMA_MIN, AUX_SCHEMA_MAX);
    fossil_fatal("run \"fossil rebuild\" to fix this problem");
  }
}


/*
** COMMAND: test-move-repository
**
** Usage: %fossil test-move-repository PATHNAME
**
** Change the location of the repository database on a local check-out.
** Use this command to avoid having to close and reopen a check-out
** when relocating the repository database.
*/
void move_repo_cmd(void){
  Blob repo;
  char *zRepo;
  if( g.argc!=3 ){
    usage("PATHNAME");
  }
  file_canonical_name(g.argv[2], &repo, 0);
  zRepo = blob_str(&repo);
  if( file_access(zRepo, F_OK) ){
    fossil_fatal("no such file: %s", zRepo);
  }
  if( db_open_local(zRepo)==0 ){
    fossil_fatal("not in a local check-out");
    return;
  }
  db_open_or_attach(zRepo, "test_repo");
  db_lset("repository", blob_str(&repo));
  db_record_repository_filename(blob_str(&repo));
  db_close(1);
}


/*
** Open the local database.  If unable, exit with an error.
*/
void db_must_be_within_tree(void){
  if( find_repository_option() ){
    fossil_fatal("the \"%s\" command only works from within an open check-out",
                 g.argv[1]);
  }
  if( db_open_local()==0 ){
    fossil_fatal("not within an open checkout");
  if( db_open_local(0)==0 ){
    fossil_fatal("current directory is not within an open check-out");
  }
  db_open_repository(0);
  db_verify_schema();
}

/*
** Close the database connection.
**
** Check for unfinalized statements and report errors if the reportErrors
** argument is true.  Ignore unfinalized statements when false.
*/
void db_close(void){
void db_close(int reportErrors){
  sqlite3_stmt *pStmt;
  if( g.db==0 ) return;
  sqlite3_set_authorizer(g.db, 0, 0);
  if( g.fSqlStats ){
    int cur, hiwtr;
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- LOOKASIDE_USED         %10d %10d\n", cur, hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &cur, &hiwtr, 0);
    fprintf(stderr, "-- LOOKASIDE_HIT                     %10d\n", hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &cur,&hiwtr,0);
    fprintf(stderr, "-- LOOKASIDE_MISS_SIZE               %10d\n", hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &cur,&hiwtr,0);
    fprintf(stderr, "-- LOOKASIDE_MISS_FULL               %10d\n", hiwtr);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_CACHE_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- CACHE_USED             %10d\n", cur);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_SCHEMA_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- SCHEMA_USED            %10d\n", cur);
    sqlite3_db_status(g.db, SQLITE_DBSTATUS_STMT_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- STMT_USED              %10d\n", cur);
    sqlite3_status(SQLITE_STATUS_MEMORY_USED, &cur, &hiwtr, 0);
    fprintf(stderr, "-- MEMORY_USED            %10d %10d\n", cur, hiwtr);
    sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &cur, &hiwtr, 0);
    fprintf(stderr, "-- MALLOC_SIZE                       %10d\n", hiwtr);
    sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &cur, &hiwtr, 0);
    fprintf(stderr, "-- MALLOC_COUNT           %10d %10d\n", cur, hiwtr);
    sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &cur, &hiwtr, 0);
    fprintf(stderr, "-- PCACHE_OVFLOW          %10d %10d\n", cur, hiwtr);
    fprintf(stderr, "-- prepared statements    %10d\n", db.nPrepare);
  }
  while( pAllStmt ){
    db_finalize(pAllStmt);
  while( db.pAllStmt ){
    db_finalize(db.pAllStmt);
  }
  if( db.nBegin ){
    if( reportErrors ){
      fossil_warning("Transaction started at %s:%d never commits",
                     db.zStartFile, db.iStartLine);
    }
    db_end_transaction(1);
  }
  pStmt = 0;
  sqlite3_busy_timeout(g.db, 0);
  g.dbIgnoreErrors++; /* Stop "database locked" warnings */
  sqlite3_exec(g.db, "PRAGMA optimize", 0, 0, 0);
  g.dbIgnoreErrors--;
  db_close_config();

  /* If the localdb has a lot of unused free space,
  ** then VACUUM it as we shut down.
  */
  if( db_database_slot("localdb")>=0 ){
    int nFree = db_int(0, "PRAGMA localdb.freelist_count");
    int nTotal = db_int(0, "PRAGMA localdb.page_count");
    if( nFree>nTotal/4 ){
      db_unprotect(PROTECT_ALL);
      db_multi_exec("VACUUM localdb;");
      db_protect_pop();
    }
  }

  if( g.db ){
    int rc;
    sqlite3_wal_checkpoint(g.db, 0);
    rc = sqlite3_close(g.db);
    if( g.fSqlTrace ) fossil_trace("-- sqlite3_close(%d)\n", rc);
    if( rc==SQLITE_BUSY && reportErrors ){
      while( (pStmt = sqlite3_next_stmt(g.db, pStmt))!=0 ){
        fossil_warning("unfinalized SQL statement: [%s]", sqlite3_sql(pStmt));
      }
    }
    g.db = 0;
  }
  g.repositoryOpen = 0;
  g.localOpen = 0;
  db.bProtectTriggers = 0;
  assert( g.dbConfig==0 );
  assert( g.zConfigDbName==0 );
  backoffice_run_if_needed();
}
  g.configOpen = 0;
  sqlite3_close(g.db);

/*
** Close the database as quickly as possible without unnecessary processing.
*/
void db_panic_close(void){
  if( g.db ){
    int rc;
    sqlite3_wal_checkpoint(g.db, 0);
    rc = sqlite3_close(g.db);
    if( g.fSqlTrace ) fossil_trace("-- sqlite3_close(%d)\n", rc);
    db_clear_authorizer();
  }
  g.db = 0;
  g.repositoryOpen = 0;
  g.localOpen = 0;
}


/*
** Create a new empty repository database with the given name.
**
** Only the schema is initialized.  The required VAR tables entries
** are not set by this routine and must be set separately in order
** to make the new file a valid database.
*/
void db_create_repository(const char *zFilename){
  db_init_database(
     zFilename,
     zRepositorySchema1,
     zRepositorySchemaDefaultReports,
     zRepositorySchema2,
     (char*)0
  );
  isNewRepo = 1;
  db_delete_on_failure(zFilename);
}

/*
** Create the default user accounts in the USER table.
*/
void db_create_default_users(int setupUserOnly, const char *zDefaultUser){
  const char *zUser;
  zUser = db_get("default-user", 0);
  const char *zUser = zDefaultUser;
  if( zUser==0 ){
    zUser = db_get("default-user", 0);
  }
  if( zUser==0 ){
    zUser = zDefaultUser;
    zUser = fossil_getenv("FOSSIL_USER");
  }
  if( zUser==0 ){
#ifdef __MINGW32__
    zUser = getenv("USERNAME");
#else
    zUser = getenv("USER");
#endif
    zUser = fossil_getenv("USER");
  }
  if( zUser==0 ){
    zUser = fossil_getenv("LOGNAME");
  }
  if( zUser==0 ){
    zUser = fossil_getenv("USERNAME");
  }
  if( zUser==0 ){
    zUser = "root";
  }
  db_unprotect(PROTECT_USER);
  db_multi_exec(
     "INSERT INTO user(login, pw, cap, info)"
     "VALUES(%Q,lower(hex(randomblob(3))),'s','')", zUser
     "INSERT OR IGNORE INTO user(login, info) VALUES(%Q,'')", zUser
  );
  db_multi_exec(
     "UPDATE user SET cap='s', pw=%Q"
     " WHERE login=%Q", fossil_random_password(10), zUser
  );
  if( !setupUserOnly ){
    db_multi_exec(
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('anonymous',hex(randomblob(8)),'ghmncz','Anon');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('nobody','','jor','Nobody');"
       "INSERT INTO user(login,pw,cap,info)"
       "   VALUES('developer','','dei','Dev');"
       "INSERT INTO user(login,pw,cap,info)"
       "INSERT OR IGNORE INTO user(login,pw,cap,info)"
       "   VALUES('anonymous',hex(randomblob(8)),'hz','Anon');"
       "INSERT OR IGNORE INTO user(login,pw,cap,info)"
       "   VALUES('nobody','','gjorz','Nobody');"
       "INSERT OR IGNORE INTO user(login,pw,cap,info)"
       "   VALUES('developer','','ei','Dev');"
       "INSERT OR IGNORE INTO user(login,pw,cap,info)"
       "   VALUES('reader','','kptw','Reader');"
    );
  }
  db_protect_pop();
}

/*
** Return a pointer to a string that contains the RHS of an IN operator
** that will select CONFIG table names that are in the list of control
** settings.
*/
const char *db_setting_inop_rhs(){
  Blob x;
  int i;
  int nSetting;
  const Setting *aSetting = setting_info(&nSetting);
  const char *zSep = "";

  blob_zero(&x);
  blob_append_sql(&x, "(");
  for(i=0; i<nSetting; i++){
    blob_append_sql(&x, "%s%Q", zSep/*safe-for-%s*/, aSetting[i].name);
    zSep = ",";
  }
  blob_append_sql(&x, ")");
  return blob_sql_text(&x);
}

/*
** Fill an empty repository database with the basic information for a
** repository. This function is shared between 'create_repository_cmd'
** ('new') and 'reconstruct_cmd' ('reconstruct'), both of which create
** new repositories.
**
** The zTemplate parameter determines if the settings for the repository
** should be copied from another repository.  If zTemplate is 0 then the
** settings will have their normal default values.  If zTemplate is
** non-zero, it is assumed that the caller of this function has already
** attached a database using the label "settingSrc".  If not, the call to
** this function will fail.
**
** The zInitialDate parameter determines the date of the initial check-in
** that is automatically created.  If zInitialDate is 0 then no initial
** check-in is created. The makeServerCodes flag determines whether or
** not server and project codes are invented for this repository.
*/
void db_initial_setup(
  const char *zTemplate,       /* Repository from which to copy settings. */
  const char *zInitialDate,    /* Initial date of repository. (ex: "now") */
  const char *zDefaultUser,    /* Default user for the repository */
  const char *zDefaultUser     /* Default user for the repository */
  int makeServerCodes          /* True to make new server & project codes */
){
  char *zDate;
  Blob hash;
  Blob manifest;

  db_unprotect(PROTECT_ALL);
  db_set("content-schema", CONTENT_SCHEMA, 0);
  db_set("aux-schema", AUX_SCHEMA, 0);
  if( makeServerCodes ){
    db_multi_exec(
      "INSERT INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
      "INSERT INTO config(name,value)"
      " VALUES('project-code', lower(hex(randomblob(20))));"
    );
  db_set("aux-schema", AUX_SCHEMA_MAX, 0);
  db_set("rebuilt", get_version(), 0);
  db_set("admin-log", "1", 0);
  db_set("access-log", "1", 0);
  db_multi_exec(
      "INSERT INTO config(name,value,mtime)"
      " VALUES('server-code', lower(hex(randomblob(20))),now());"
      "INSERT INTO config(name,value,mtime)"
      " VALUES('project-code', lower(hex(randomblob(20))),now());"
  );
  }
  if( !db_is_global("autosync") ) db_set_int("autosync", 1, 0);
  if( !db_is_global("localauth") ) db_set_int("localauth", 0, 0);
  if( !db_is_global("timeline-plaintext") ){
    db_set_int("timeline-plaintext", 1, 0);
  }
  db_create_default_users(0, zDefaultUser);
  if( zDefaultUser ) g.zLogin = zDefaultUser;
  user_select();

  if( zTemplate ){
    /*
    ** Copy all settings from the supplied template repository.
    */
    db_multi_exec(
      "INSERT OR REPLACE INTO config"
      " SELECT name,value,mtime FROM settingSrc.config"
      "  WHERE (name IN %s OR name IN %s OR name GLOB 'walias:/*')"
      "    AND name NOT GLOB 'project-*'"
      "    AND name NOT GLOB 'short-project-*';",
      configure_inop_rhs(CONFIGSET_ALL),
      db_setting_inop_rhs()
    );
    g.eHashPolicy = db_get_int("hash-policy", g.eHashPolicy);
    db_multi_exec(
      "REPLACE INTO reportfmt SELECT * FROM settingSrc.reportfmt;"
    );

    /*
    ** Copy the user permissions, contact information, last modified
    ** time, and photo for all the "system" users from the supplied
    ** template repository into the one being setup.  The other columns
    ** are not copied because they contain security information or other
    ** data specific to the other repository.  The list of columns copied
    ** by this SQL statement may need to be revised in the future.
    */
    db_multi_exec("UPDATE user SET"
      "  cap = (SELECT u2.cap FROM settingSrc.user u2"
      "         WHERE u2.login = user.login),"
      "  info = (SELECT u2.info FROM settingSrc.user u2"
      "          WHERE u2.login = user.login),"
      "  mtime = (SELECT u2.mtime FROM settingSrc.user u2"
      "           WHERE u2.login = user.login),"
      "  photo = (SELECT u2.photo FROM settingSrc.user u2"
      "           WHERE u2.login = user.login)"
      " WHERE user.login IN ('anonymous','nobody','developer','reader');"
    );
  }
  db_protect_pop();

  if( zInitialDate ){
    int rid;
    blob_zero(&manifest);
    blob_appendf(&manifest, "C initial\\sempty\\scheck-in\n");
    zDate = db_text(0, "SELECT datetime(%Q)", zInitialDate);
    zDate = date_in_standard_format(zInitialDate);
    zDate[10]='T';
    blob_appendf(&manifest, "D %s\n", zDate);
    blob_appendf(&manifest, "P\n");
    md5sum_init();
    /* The R-card is necessary here because without it
     * fossil versions earlier than versions 1.27 would
     * interpret this artifact as a "control". */
    blob_appendf(&manifest, "R %s\n", md5sum_finish(0));
    blob_appendf(&manifest, "T *branch * trunk\n");
    blob_appendf(&manifest, "T *sym-trunk *\n");
    blob_appendf(&manifest, "U %F\n", g.zLogin);
    md5sum_blob(&manifest, &hash);
    blob_appendf(&manifest, "Z %b\n", &hash);
    blob_reset(&hash);
    rid = content_put(&manifest, 0, 0);
    manifest_crosslink(rid, &manifest);
    rid = content_put(&manifest);
    manifest_crosslink(rid, &manifest, MC_NONE);
  }
}

/*
** COMMAND: new
** COMMAND: new#
** COMMAND: init
**
** Usage: %fossil new ?OPTIONS? FILENAME
**    or: %fossil init ?OPTIONS? FILENAME
**
** Create a repository for a new project in the file named FILENAME.
** This command is distinct from "clone".  The "clone" command makes
** a copy of an existing project.  This command starts a new project.
**
** By default, your current login name is used to create the default
** admin user. This can be overridden using the -A|--admin-user
** parameter.
**
** By default, all settings will be initialized to their default values.
** This can be overridden using the --template parameter to specify a
** repository file from which to copy the initial settings.  When a template
** repository is used, almost all of the settings accessible from the setup
** page, either directly or indirectly, will be copied.  Normal users and
** their associated permissions will not be copied; however, the system
** default users "anonymous", "nobody", "reader", "developer", and their
** associated permissions will be copied.  In case of SQL errors, rebuild the
** template repository and try again.
**
** Options:
**    --template      FILE         Copy settings from repository file
**    -A|--admin-user USERNAME     Select given USERNAME as admin user
**    --date-override DATETIME     Use DATETIME as time of the initial check-in
**    --sha1                       Use an initial hash policy of "sha1"
**    --project-name  STRING       The name of the project "project name in
**                                 quotes"
**    --project-desc  STRING       The description of the project "project
**                                 description in quotes"
**
**    --admin-user|-A USERNAME
**    --date-override DATETIME
** DATETIME may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
** year-month-day form, it may be truncated, the "T" may be replaced by
** a space, and it may also name a timezone offset from UTC as "-HH:MM"
** (westward) or "+HH:MM" (eastward). Either no timezone suffix or "Z"
** means UTC.
**
** See also: [[clone]]
*/
void create_repository_cmd(void){
  char *zPassword;
  const char *zTemplate;      /* Repository from which to copy settings */
  const char *zDate;          /* Date of the initial check-in */
  const char *zDefaultUser;   /* Optional name of the default user */
  const char *zProjectName;   /* Optional project name of the repo */
  const char *zProjectDesc;   /* Optional project description "description
                              ** of project in quotes" */
  int bUseSha1 = 0;           /* True to set the hash-policy to sha1 */


  zTemplate = find_option("template",0,1);
  zDate = find_option("date-override",0,1);
  zDefaultUser = find_option("admin-user","A",1);
  bUseSha1 = find_option("sha1",0,0)!=0;
  zProjectName = find_option("project-name", 0, 1);
  zProjectDesc = find_option("project-desc", 0, 1);
  /* We should be done with options.. */
  verify_all_options();
  if( zDate==0 ) zDate = "now";

  if( g.argc!=3 ){
    usage("REPOSITORY-NAME");
  }

  if( -1 != file_size(g.argv[2], ExtFILE) ){
    fossil_fatal("file already exists: %s", g.argv[2]);
  }

  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);
  db_open_config(0);
  db_open_config(0, 0);
  if( zTemplate ) db_attach(zTemplate, "settingSrc");
  db_begin_transaction();
  if( bUseSha1 ){
    g.eHashPolicy = HPOLICY_SHA1;
    db_set_int("hash-policy", HPOLICY_SHA1, 0);
  }
  if( zProjectName ) db_set("project-name", zProjectName, 0);
  if( zProjectDesc ) db_set("project-description", zProjectDesc, 0);
  if( zDate==0 ) zDate = "now";
  db_initial_setup(zDate, zDefaultUser, 1);
  db_initial_setup(zTemplate, zDate, zDefaultUser);
  db_end_transaction(0);
  if( zTemplate ) db_detach("settingSrc");
  if( zProjectName ) fossil_print("project-name: %s\n", zProjectName);
  if( zProjectDesc ) fossil_print("project-description: %s\n", zProjectDesc);
  printf("project-id: %s\n", db_get("project-code", 0));
  printf("server-id:  %s\n", db_get("server-code", 0));
  fossil_print("project-id: %s\n", db_get("project-code", 0));
  fossil_print("server-id:  %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  printf("admin-user: %s (initial password is \"%s\")\n", g.zLogin, zPassword);
  fossil_print("admin-user: %s (initial password is \"%s\")\n",
               g.zLogin, zPassword);
  hash_user_password(g.zLogin);
}

/*
** SQL functions for debugging.
**
** The print() function writes its arguments on stdout, but only
** if the -sqlprint command-line option is turned on.
*/
static void db_sql_print(
void db_sql_print(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int i;
  if( g.fSqlPrint ){
    for(i=0; i<argc; i++){
      char c = i==argc-1 ? '\n' : ' ';
      printf("%s%c", sqlite3_value_text(argv[i]), c);
      fossil_print("%s%c", sqlite3_value_text(argv[i]), c);
    }
  }
}
static void db_sql_trace(void *notUsed, const char *zSql){
  int n = strlen(zSql);
  fprintf(stderr, "%s%s\n", zSql, (n>0 && zSql[n-1]==';') ? "" : ";");

/*
** Callback for sqlite3_trace_v2();
*/
int db_sql_trace(unsigned m, void *notUsed, void *pP, void *pX){
  sqlite3_stmt *pStmt = (sqlite3_stmt*)pP;
  char *zSql;
  int n;
  const char *zArg = (const char*)pX;
  char zEnd[100];
  if( m & SQLITE_TRACE_CLOSE ){
    /* If we are tracking closes, that means we want to clean up static
    ** prepared statements. */
    while( db.pAllStmt ){
      db_finalize(db.pAllStmt);
    }
    return 0;
  }
  if( zArg[0]=='-' ) return 0;
  if( m & SQLITE_TRACE_PROFILE ){
    sqlite3_int64 nNano = *(sqlite3_int64*)pX;
    double rMillisec = 0.000001 * nNano;
    int nRun = sqlite3_stmt_status(pStmt, SQLITE_STMTSTATUS_RUN, 0);
    int nVmStep = sqlite3_stmt_status(pStmt, SQLITE_STMTSTATUS_VM_STEP, 1);
    sqlite3_snprintf(sizeof(zEnd),zEnd," /* %.3fms, %r run, %d vm-steps */\n",
        rMillisec, nRun, nVmStep);
  }else{
    zEnd[0] = '\n';
    zEnd[1] = 0;
  }
  zSql = sqlite3_expanded_sql(pStmt);
  n = (int)strlen(zSql);
  fossil_trace("%s%s%s", zSql, (n>0 && zSql[n-1]==';') ? "" : ";", zEnd);
  sqlite3_free(zSql);
  return 0;
}

/*
** Implement the user() SQL function.  user() takes no arguments and
** returns the user ID of the current user.
*/
static void db_sql_user(
LOCAL void db_sql_user(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  if( g.zLogin!=0 ){
    sqlite3_result_text(context, g.zLogin, -1, SQLITE_STATIC);
  }
}

/*
** Implement the cgi() SQL function.  cgi() takes a an argument which is
** a name of CGI query parameter. The value of that parameter is returned, 
** if available. optional second argument will be returned if the first
** Implement the cgi() SQL function.  cgi() takes an argument which is
** a name of CGI query parameter. The value of that parameter is returned,
** if available. Optional second argument will be returned if the first
** doesn't exist as a CGI parameter.
*/
static void db_sql_cgi(sqlite3_context *context, int argc, sqlite3_value **argv){
LOCAL void db_sql_cgi(sqlite3_context *context, int argc, sqlite3_value **argv){
  const char* zP;
  if( argc!=1 && argc!=2 ) return;
  zP = P((const char*)sqlite3_value_text(argv[0]));
  if( zP ){
    sqlite3_result_text(context, zP, -1, SQLITE_STATIC);
  }else if( argc==2 ){
    zP = (const char*)sqlite3_value_text(argv[1]);
    if( zP ) sqlite3_result_text(context, zP, -1, SQLITE_TRANSIENT);
  }
}

/*
** This is used by the [commit] command.
** SQL function:
**
**       is_selected(id)
**       if_selected(id, X, Y)
** Return true if either:
**
** On the commit command, when filenames are specified (in order to do
** a partial commit) the vfile.id values for the named files are loaded
** into the g.aCommitFile[] array.  This function looks at that array
** to see if a file is named on the command-line.
**
** In the first form (1 argument) return TRUE if either no files are
**     a) Global.aCommitFile is NULL, or
**     b) Global.aCommitFile contains the integer passed as an argument.
** named on the command line (g.aCommitFile is NULL meaning that all
** changes are to be committed) or if id is found in g.aCommitFile[]
** (meaning that id was named on the command-line).
**
** In the second form (3 arguments) return argument X if true and Y
** Otherwise return false.
** if false.  Except if Y is NULL then always return X.
*/
static void file_is_selected(
LOCAL void file_is_selected(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int rc = 0;

  assert(argc==1);
  assert(argc==1 || argc==3);
  if( g.aCommitFile ){
    int iId = sqlite3_value_int(argv[0]);
    int ii;
    for(ii=0; g.aCommitFile[ii]; ii++){
      if( iId==g.aCommitFile[ii] ){
        sqlite3_result_int(context, 1);
        return;
        rc = 1;
        break;
      }
    }
  }else{
    rc = 1;
  }
  if( argc==1 ){
    sqlite3_result_int(context, 0);
    sqlite3_result_int(context, rc);
  }else{
    assert( argc==3 );
    assert( rc==0 || rc==1 );
    if( sqlite3_value_type(argv[2-rc])==SQLITE_NULL ) rc = 1-rc;
    sqlite3_result_value(context, argv[2-rc]);
  }
}

/*
** Implementation of the "win_reserved(X)" SQL function, a wrapper
** for file_is_win_reserved(X) which returns true if X is
** a Windows-reserved filename.
*/
LOCAL void db_win_reserved_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char * zName = (const char *)sqlite3_value_text(argv[0]);
  if( zName!=0 ){
    sqlite3_result_int(context, 1);
    sqlite3_result_int(context, file_is_win_reserved(zName)!=0);
  }
}

/*
** Convert the input string into an SHA1.  Make a notation in the
** Convert the input string into an artifact hash.  Make a notation in the
** CONCEALED table so that the hash can be undo using the db_reveal()
** function at some later time.
**
** The value returned is stored in static space and will be overwritten
** on subsequent calls.
**
** If zContent is already a well-formed SHA1 hash, then return a copy
** If zContent is already a well-formed artifact hash, then return a copy
** of that hash, not a hash of the hash.
**
** The CONCEALED table is meant to obscure email addresses.  Every valid
** email address will contain a "@" character and "@" is not valid within
** an SHA1 hash so there is no chance that a valid email address will go
** a SHA1 hash so there is no chance that a valid email address will go
** unconcealed.
*/
char *db_conceal(const char *zContent, int n){
  static char zHash[42];
  static char zHash[HNAME_MAX+1];
  Blob out;
  if( n==40 && validate16(zContent, n) ){
  if( hname_validate(zContent, n) ){
    memcpy(zHash, zContent, n);
    zHash[n] = 0;
  }else{
    sha1sum_step_text(zContent, n);
    sha1sum_finish(&out);
    strcpy(zHash, blob_str(&out));
    sqlite3_snprintf(sizeof(zHash), zHash, "%s", blob_str(&out));
    blob_reset(&out);
    db_multi_exec(
       "INSERT OR IGNORE INTO concealed VALUES(%Q,%#Q)",
       "INSERT OR IGNORE INTO concealed(hash,content,mtime)"
       " VALUES(%Q,%#Q,now())",
       zHash, n, zContent
    );
  }
  return zHash;
}

/*
** Attempt to look up the input in the CONCEALED table.  If found,
** and if the okRdAddr permission is enabled then return the
** original value for which the input is a hash.  If okRdAddr is
** false or if the lookup fails, return the original string content.
**
** In either case, the string returned is stored in space obtained
** from malloc and should be freed by the calling function.
*/
char *db_reveal(const char *zKey){
  char *zOut;
  if( g.okRdAddr ){
  if( g.perm.RdAddr ){
    zOut = db_text(0, "SELECT content FROM concealed WHERE hash=%Q", zKey);
  }else{
    zOut = 0;
  }
  if( zOut==0 ){
    zOut = mprintf("%s", zKey);
    zOut = fossil_strdup_nn(zKey);
  }
  return zOut;
}

/*
** This function registers auxiliary functions when the SQLite
** database connection is first established.
*/
LOCAL void db_connection_init(void){
  sqlite3_exec(g.db, "PRAGMA foreign_keys=OFF;", 0, 0, 0);
  sqlite3_create_function(g.db, "user", 0, SQLITE_ANY, 0, db_sql_user, 0, 0);
  sqlite3_create_function(g.db, "cgi", 1, SQLITE_ANY, 0, db_sql_cgi, 0, 0);
  sqlite3_create_function(g.db, "cgi", 2, SQLITE_ANY, 0, db_sql_cgi, 0, 0);
  sqlite3_create_function(g.db, "print", -1, SQLITE_UTF8, 0,db_sql_print,0,0);
  sqlite3_create_function(
    g.db, "file_is_selected", 1, SQLITE_UTF8, 0, file_is_selected,0,0
  );
  if( g.fSqlTrace ){
    sqlite3_trace(g.db, db_sql_trace, 0);
  }
}

/*
** Return true if the string zVal represents "true" (or "false").
*/
int is_truth(const char *zVal){
  static const char *azOn[] = { "on", "yes", "true", "1" };
  static const char *const azOn[] = { "on", "yes", "true", "1" };
  int i;
  for(i=0; i<sizeof(azOn)/sizeof(azOn[0]); i++){
    if( strcmp(zVal,azOn[i])==0 ) return 1;
  for(i=0; i<count(azOn); i++){
    if( fossil_stricmp(zVal,azOn[i])==0 ) return 1;
  }
  return 0;
}
int is_false(const char *zVal){
  static const char *azOff[] = { "off", "no", "false", "0" };
  static const char *const azOff[] = { "off", "no", "false", "0" };
  int i;
  for(i=0; i<sizeof(azOff)/sizeof(azOff[0]); i++){
    if( strcmp(zVal,azOff[i])==0 ) return 1;
  for(i=0; i<count(azOff); i++){
    if( fossil_stricmp(zVal,azOff[i])==0 ) return 1;
  }
  return 0;
}

/*
** Swap the g.db and g.dbConfig connections so that the various db_* routines
** work on the ~/.fossil database instead of on the repository database.
** work on the configuration database instead of on the repository database.
** Be sure to swap them back after doing the operation.
**
** If g.useAttach that means the ~/.fossil database was opened with
** the useAttach flag set to 1.  In that case no connection swap is required
** so this routine is a no-op.
** If the configuration database has already been opened as the main database
** or is attached to the main database, no connection swaps are required so
** this routine is a no-op.
*/
void db_swap_connections(void){
  /*
  ** When swapping the main database connection with the config database
  ** connection, the config database connection must be open (not simply
  ** attached); otherwise, the swap would end up leaving the main database
  ** connection invalid, defeating the very purpose of this routine.  This
  ** same constraint also holds true when restoring the previously swapped
  ** database connection; otherwise, it means that no swap was performed
  ** because the main database connection was already pointing to the config
  ** database.
  */
  if( !g.useAttach ){
  if( g.dbConfig ){
    sqlite3 *dbTemp = g.db;
    assert( g.dbConfig!=0 );
    g.db = g.dbConfig;
    g.dbConfig = dbTemp;
  }
}

/*
** Try to read a versioned setting string from .fossil-settings/<name>.
**
** Return the text of the string if it is found.  Return NULL if not
** found.
**
** If the zNonVersionedSetting parameter is not NULL then it holds the
** non-versioned value for this setting.  If both a versioned and a
** non-versioned value exist and are not equal, then a warning message
** might be generated.
*/
char *db_get_versioned(const char *zName, char *zNonVersionedSetting){
  char *zVersionedSetting = 0;
  int noWarn = 0;
  int found = 0;
  struct _cacheEntry {
    struct _cacheEntry *next;
    const char *zName, *zValue;
  } *cacheEntry = 0;
  static struct _cacheEntry *cache = 0;

  if( !g.localOpen && g.zOpenRevision==0 ) return zNonVersionedSetting;
  /* Look up name in cache */
  cacheEntry = cache;
  while( cacheEntry!=0 ){
    if( fossil_strcmp(cacheEntry->zName, zName)==0 ){
      zVersionedSetting = fossil_strdup(cacheEntry->zValue);
      break;
    }
    cacheEntry = cacheEntry->next;
  }
  /* Attempt to read value from file in check-out if there wasn't a cache hit.*/
  if( cacheEntry==0 ){
    Blob versionedPathname;
    Blob setting;
    blob_zero(&versionedPathname);
    blob_zero(&setting);
    blob_appendf(&versionedPathname, "%s.fossil-settings/%s",
                 g.zLocalRoot, zName);
    if( !g.localOpen ){
      /* Repository is in the process of being opened, but files have not been
       * written to disk. Load from the database. */
      Blob noWarnFile;
      if( historical_blob(g.zOpenRevision, blob_str(&versionedPathname),
          &setting, 0) ){
        found = 1;
      }
      /* See if there's a no-warn flag */
      blob_append(&versionedPathname, ".no-warn", -1);
      blob_zero(&noWarnFile);
      if( historical_blob(g.zOpenRevision, blob_str(&versionedPathname),
          &noWarnFile, 0) ){
        noWarn = 1;
      }
      blob_reset(&noWarnFile);
    }else if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
      /* File exists, and contains the value for this setting. Load from
      ** the file. */
      const char *zFile = blob_str(&versionedPathname);
      if( blob_read_from_file(&setting, zFile, ExtFILE)>=0 ){
        found = 1;
      }
      /* See if there's a no-warn flag */
      blob_append(&versionedPathname, ".no-warn", -1);
      if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
        noWarn = 1;
      }
    }
    blob_reset(&versionedPathname);
    if( found ){
      blob_strip_comment_lines(&setting, &setting);
      blob_trim(&setting); /* Avoid non-obvious problems with line endings
                           ** on boolean properties */
      zVersionedSetting = fossil_strdup(blob_str(&setting));
    }
    blob_reset(&setting);
    /* Store result in cache, which can be the value or 0 if not found */
    cacheEntry = (struct _cacheEntry*)fossil_malloc(sizeof(struct _cacheEntry));
    cacheEntry->next = cache;
    cacheEntry->zName = zName;
    cacheEntry->zValue = fossil_strdup(zVersionedSetting);
    cache = cacheEntry;
  }
  /* Display a warning? */
  if( zVersionedSetting!=0 && zNonVersionedSetting!=0
   && zNonVersionedSetting[0]!='\0' && !noWarn
  ){
    /* There's a versioned setting, and a non-versioned setting. Tell
    ** the user about the conflict */
    fossil_warning(
        "setting %s has both versioned and non-versioned values: using "
        "versioned value from file \"%/.fossil-settings/%s\" (to silence "
        "this warning, either create an empty file named "
        "\"%/.fossil-settings/%s.no-warn\" in the check-out root, or delete "
        "the non-versioned setting with \"fossil unset %s\")", zName,
        g.zLocalRoot, zName, g.zLocalRoot, zName, zName
    );
  }
  /* Prefer the versioned setting */
  return ( zVersionedSetting!=0 ) ? zVersionedSetting : zNonVersionedSetting;
}


/*
** Get and set values from the CONFIG, GLOBAL_CONFIG and VVAR table in the
** repository and local databases.
**
** If no such variable exists, return zDefault.  Or, if zName is the name
** of a setting, then the zDefault is ignored and the default value of the
** setting is returned instead.  If zName is a versioned setting, then
** versioned value takes priority.
*/
char *db_get(const char *zName, char *zDefault){
char *db_get(const char *zName, const char *zDefault){
  char *z = 0;
  const Setting *pSetting = db_find_setting(zName, 0);
  if( g.repositoryOpen ){
    static Stmt q1;
    const char *zRes;
    db_static_prepare(&q1, "SELECT value FROM config WHERE name=$n");
    db_bind_text(&q1, "$n", zName);
    if( db_step(&q1)==SQLITE_ROW && (zRes = db_column_text(&q1,0))!=0 ){
      z = fossil_strdup(zRes);
    }
    db_reset(&q1);
  }
  if( z==0 && g.zConfigDbName ){
    static Stmt q2;
    const char *zRes;
    db_swap_connections();
    db_static_prepare(&q2, "SELECT value FROM global_config WHERE name=$n");
    db_swap_connections();
    db_bind_text(&q2, "$n", zName);
    if( db_step(&q2)==SQLITE_ROW && (zRes = db_column_text(&q2,0))!=0 ){
      z = fossil_strdup(zRes);
    }
    db_reset(&q2);
  }
  if( pSetting!=0 && pSetting->versionable ){
    /* This is a versionable setting, try and get the info from a
    ** checked-out file */
    char * zZ = z;
    z = db_get_versioned(zName, z);
    if(zZ != z){
      fossil_free(zZ);
    }
  }
  if( z==0 ){
    if( zDefault==0 && pSetting && pSetting->def[0] ){
      z = fossil_strdup(pSetting->def);
    }else{
      z = fossil_strdup(zDefault);
    }
  }
  return z;
}
char *db_get_mtime(const char *zName, const char *zFormat,
                   const char *zDefault){
  char *z = 0;
  if( g.repositoryOpen ){
    z = db_text(0, "SELECT value FROM config WHERE name=%Q", zName);
    z = db_text(0, "SELECT mtime FROM config WHERE name=%Q", zName);
  }
  if( z==0 && g.configOpen ){
    db_swap_connections();
    z = db_text(0, "SELECT value FROM global_config WHERE name=%Q", zName);
    db_swap_connections();
  }
  if( z==0 ){
    z = zDefault;
    z = fossil_strdup(zDefault);
  }else if( zFormat!=0 ){
    z = db_text(0, "SELECT strftime(%Q,%Q,'unixepoch');", zFormat, z);
  }
  return z;
}
void db_set(const char *zName, const char *zValue, int globalFlag){
  const CmdOrPage *pCmd = 0;
  db_assert_protection_off_or_not_sensitive(zName);
  if( zValue!=0 && zValue[0]==0
   && dispatch_name_search(zName, CMDFLAG_SETTING, &pCmd)==0
   && (pCmd->eCmdFlags & CMDFLAG_KEEPEMPTY)==0
  ){
    /* Changing a setting to an empty string is the same as unsetting it,
    ** unless that setting has the keep-empty flag. */
    db_unset(zName/*works-like:"x"*/, globalFlag);
    return;
  }
  db_unprotect(PROTECT_CONFIG);
  db_begin_transaction();
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("REPLACE INTO global_config(name,value) VALUES(%Q,%Q)",
                   zName, zValue);
    db_swap_connections();
  }else{
    db_multi_exec("REPLACE INTO config(name,value) VALUES(%Q,%Q)",
    db_multi_exec("REPLACE INTO config(name,value,mtime) VALUES(%Q,%Q,now())",
                   zName, zValue);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  db_end_transaction(0);
  db_protect_pop();
}
void db_unset(const char *zName, int globalFlag){
  db_begin_transaction();
  db_unprotect(PROTECT_CONFIG);
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("DELETE FROM global_config WHERE name=%Q", zName);
    db_swap_connections();
  }else{
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  db_protect_pop();
  db_end_transaction(0);
}
int db_is_global(const char *zName){
  int rc = 0;
  if( g.configOpen ){
  if( g.zConfigDbName ){
    db_swap_connections();
    rc = db_exists("SELECT 1 FROM global_config WHERE name=%Q", zName);
    db_swap_connections();
  }
  return rc;
}
int db_get_int(const char *zName, int dflt){
  int v = dflt;
  int rc;
  if( g.repositoryOpen ){
    Stmt q;
    db_prepare(&q, "SELECT value FROM config WHERE name=%Q", zName);
    static Stmt q;
    db_static_prepare(&q, "SELECT value FROM config WHERE name=$n");
    db_bind_text(&q, "$n", zName);
    rc = db_step(&q);
    if( rc==SQLITE_ROW ){
      v = db_column_int(&q, 0);
    }
    db_finalize(&q);
    db_reset(&q);
  }else{
    rc = SQLITE_DONE;
  }
  if( rc==SQLITE_DONE && g.configOpen ){
  if( rc==SQLITE_DONE && g.zConfigDbName ){
    static Stmt q2;
    db_swap_connections();
    v = db_int(dflt, "SELECT value FROM global_config WHERE name=%Q", zName);
    db_static_prepare(&q2, "SELECT value FROM global_config WHERE name=$n");
    db_swap_connections();
    db_bind_text(&q2, "$n", zName);
    if( db_step(&q2)==SQLITE_ROW ){
      v = db_column_int(&q2, 0);
    }
    db_reset(&q2);
  }
  return v;
}
i64 db_large_file_size(void){
  /* Return size of the largest file that is not considered oversized */
  return strtoll(db_get("large-file-size","20000000"),0,0);
}
void db_set_int(const char *zName, int value, int globalFlag){
  db_assert_protection_off_or_not_sensitive(zName);
  db_unprotect(PROTECT_CONFIG);
  if( globalFlag ){
    db_swap_connections();
    db_multi_exec("REPLACE INTO global_config(name,value) VALUES(%Q,%d)",
                  zName, value);
    db_swap_connections();
  }else{
    db_multi_exec("REPLACE INTO config(name,value) VALUES(%Q,%d)",
    db_multi_exec("REPLACE INTO config(name,value,mtime) VALUES(%Q,%d,now())",
                  zName, value);
  }
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  db_protect_pop();
}
int db_get_boolean(const char *zName, int dflt){
  char *zVal = db_get(zName, dflt ? "on" : "off");
  if( is_truth(zVal) ){
    dflt = 1;
  }else if( is_false(zVal) ){
    dflt = 0;
  }
  fossil_free(zVal);
  return dflt;
}
int db_get_versioned_boolean(const char *zName, int dflt){
  char *zVal = db_get_versioned(zName, 0);
  if( zVal==0 ) return dflt;
  if( is_truth(zVal) ) return 1;
  if( is_false(zVal) ) return 0;
  return dflt;
}
char *db_lget(const char *zName, char *zDefault){
  return db_text((char*)zDefault,
char *db_lget(const char *zName, const char *zDefault){
  return db_text(zDefault,
                 "SELECT value FROM vvar WHERE name=%Q", zName);
}
void db_lset(const char *zName, const char *zValue){
  db_multi_exec("REPLACE INTO vvar(name,value) VALUES(%Q,%Q)", zName, zValue);
}
int db_lget_int(const char *zName, int dflt){
  return db_int(dflt, "SELECT value FROM vvar WHERE name=%Q", zName);
}
int db_lget_boolean(const char *zName, int dflt){
  char *zVal = db_lget(zName, dflt ? "on" : "off");
  if( is_truth(zVal) ){
    dflt = 1;
  }else if( is_false(zVal) ){
    dflt = 0;
  }
  fossil_free(zVal);
  return dflt;
}
void db_lset_int(const char *zName, int value){
  db_multi_exec("REPLACE INTO vvar(name,value) VALUES(%Q,%d)", zName, value);
}

/* Va-args versions of db_get(), db_set(), and db_unset()
**
** codecheck1.c verifies that the format string for db_set_mprintf()
** and db_unset_mprintf() begins with an ASCII character prefix.  We
** don't want that format string to begin with %s or %d as that might
** allow an injection attack to set or overwrite arbitrary settings.
*/
char *db_get_mprintf(const char *zDefault, const char *zFormat, ...){
  va_list ap;
  char *zName;
  char *zResult;
  va_start(ap, zFormat);
  zName = vmprintf(zFormat, ap);
  va_end(ap);
  zResult = db_get(zName, zDefault);
  fossil_free(zName);
  return zResult;
}
void db_set_mprintf(const char *zNew, int iGlobal, const char *zFormat, ...){
  va_list ap;
  char *zName;
  va_start(ap, zFormat);
  zName = vmprintf(zFormat, ap);
  va_end(ap);
  db_set(zName/*works-like:"x"*/, zNew, iGlobal);
  fossil_free(zName);
}
void db_unset_mprintf(int iGlobal, const char *zFormat, ...){
  va_list ap;
  char *zName;
  va_start(ap, zFormat);
  zName = vmprintf(zFormat, ap);
  va_end(ap);
  db_unset(zName/*works-like:"x"*/, iGlobal);
  fossil_free(zName);
}

/*
** Get a setting that is tailored to subsystem.  The return value is
** NULL if the setting does not exist, or a string obtained from mprintf()
** if the setting is available.
**
** The actual setting can be a comma-separated list of values of the form:
**
**    *   VALUE
**    *   SUBSYSTEM=VALUE
**
** A VALUE without the SUBSYSTEM= prefix is the default.  This routine
** returns the VALUE that with the matching SUBSYSTEM, or the default
** VALUE if there is no match.
*/
char *db_get_for_subsystem(const char *zName, const char *zSubsys){
  int nSubsys;
  char *zToFree = 0;
  char *zCopy;
  char *zNext;
  char *zResult = 0;
  const char *zSetting = db_get(zName, 0);
  if( zSetting==0 ) return 0;
  zCopy = zToFree = fossil_strdup(zSetting);
  if( zSubsys==0 ) zSubsys = "";
  nSubsys = (int)strlen(zSubsys);
  while( zCopy ){
    zNext = strchr(zCopy, ',');
    if( zNext ){
      zNext[0] = 0;
      do{ zNext++; }while( fossil_isspace(zNext[0]) );
      if( zNext[0]==0 ) zNext = 0;
    }
    if( strchr(zCopy,'=')==0 ){
      if( zResult==0 ) zResult = zCopy;
    }else
    if( nSubsys
     && strncmp(zCopy, zSubsys, nSubsys)==0
     && zCopy[nSubsys]=='='
    ){
      zResult = &zCopy[nSubsys+1];
      break;
    }
    zCopy = zNext;
  }
  if( zResult ) zResult = fossil_strdup(zResult);
  fossil_free(zToFree);
  return zResult;
}

#if INTERFACE
/* Manifest generation flags */
#define MFESTFLG_RAW  0x01
#define MFESTFLG_UUID 0x02
#define MFESTFLG_TAGS 0x04
#endif /* INTERFACE */

/*
** Get the manifest setting.  For backwards compatibility first check if the
** value is a boolean.  If it's not a boolean, treat each character as a flag
** to enable a manifest type.  This system puts certain boundary conditions on
** which letters can be used to represent flags (any permutation of flags must
** not be able to fully form one of the boolean values).
*/
int db_get_manifest_setting(void){
  int flg;
  char *zVal = db_get("manifest", 0);
  if( zVal==0 || is_false(zVal) ){
    return 0;
  }else if( is_truth(zVal) ){
    return MFESTFLG_RAW|MFESTFLG_UUID;
  }
  flg = 0;
  while( *zVal ){
    switch( *zVal ){
      case 'r': flg |= MFESTFLG_RAW;  break;
      case 'u': flg |= MFESTFLG_UUID; break;
      case 't': flg |= MFESTFLG_TAGS; break;
    }
    zVal++;
  }
  return flg;
}


/*
** Record the name of a local repository in the global_config() database.
** The repostiroy filename %s is recorded as an entry with a "name" field
** The repository filename %s is recorded as an entry with a "name" field
** of the following form:
**
**       repo:%s
**
** The value field is set to 1.
**
** If running from a local check-out, also record the root of the check-out
** as follows:
**
**       ckout:%s
**
** Where %s is the check-out root.  The value is the repository file.
*/
void db_record_repository_filename(const char *zName){
  char *zRepoSetting;
  char *zCkoutSetting;
  Blob full;
  if( zName==0 ){
    if( !g.localOpen ) return;
    zName = db_lget("repository", 0);
    zName = db_repository_filename();
  }
  file_canonical_name(zName, &full);
  file_canonical_name(zName, &full, 0);
  (void)filename_collation();  /* Initialize before connection swap */
  db_swap_connections();
  zRepoSetting = mprintf("repo:%q", blob_str(&full));

  db_unprotect(PROTECT_CONFIG);
  db_multi_exec(
     "DELETE FROM global_config WHERE name %s = %Q;",
     filename_collation(), zRepoSetting
  );
  db_multi_exec(
     "INSERT OR IGNORE INTO global_config(name,value)"
     "VALUES('repo:%q',1)",
     blob_str(&full)
  );
  db_swap_connections();
     "VALUES(%Q,1);",
     zRepoSetting
  );
  db_protect_pop();
  fossil_free(zRepoSetting);
  if( g.localOpen && g.zLocalRoot && g.zLocalRoot[0] ){
    Blob localRoot;
    file_canonical_name(g.zLocalRoot, &localRoot, 1);
    zCkoutSetting = mprintf("ckout:%q", blob_str(&localRoot));
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "DELETE FROM global_config WHERE name %s = %Q;",
       filename_collation(), zCkoutSetting
    );
    db_multi_exec(
      "REPLACE INTO global_config(name, value)"
      "VALUES(%Q,%Q);",
      zCkoutSetting, blob_str(&full)
    );
    db_swap_connections();
    db_optional_sql("repository",
        "DELETE FROM config WHERE name %s = %Q;",
        filename_collation(), zCkoutSetting
    );
    db_optional_sql("repository",
        "REPLACE INTO config(name,value,mtime)"
        "VALUES(%Q,1,now());",
        zCkoutSetting
    );
    db_protect_pop();
    fossil_free(zCkoutSetting);
    blob_reset(&localRoot);
  }else{
    db_swap_connections();
  }
  blob_reset(&full);
}

/*
** COMMAND: open
**
** Usage: %fossil open FILENAME ?VERSION? ?--keep?
** Usage: %fossil open REPOSITORY ?VERSION? ?OPTIONS?
**
** Open a connection to the local repository in FILENAME.  A checkout
** for the repository is created with its root at the working directory.
** If VERSION is specified then that version is checked out.  Otherwise
** the latest version is checked out.  No files other than "manifest"
** and "manifest.uuid" are modified if the --keep option is present.
** Open a new connection to the repository name REPOSITORY.  A check-out
** for the repository is created with its root at the current working
** directory, or in DIR if the "--workdir DIR" is used.  If VERSION is
** specified then that version is checked out.  Otherwise the most recent
** check-in on the main branch (usually "trunk") is used.
**
** REPOSITORY can be the filename for a repository that already exists on the
** local machine or it can be a URI for a remote repository.  If REPOSITORY
** is a URI in one of the formats recognized by the [[clone]] command, then
** remote repo is first cloned, then the clone is opened. The clone will be
** stored in the current directory, or in DIR if the "--repodir DIR" option
** is used. The name of the clone will be taken from the last term of the URI.
** For "http:" and "https:" URIs, you can append an extra term to the end of
** the URI to get any repository name you like. For example:
**
**     fossil open https://fossil-scm.org/home/new-name
**
** The base URI for cloning is "https://fossil-scm.org/home".  The extra
** "new-name" term means that the cloned repository will be called
** "new-name.fossil".
**
** Options:
**   --empty           Initialize check-out as being empty, but still connected
**                     with the local repository. If you commit this check-out,
**                     it will become a new "initial" commit in the repository.
**   -f|--force        Continue with the open even if the working directory is
**                     not empty, or if auto-sync fails.
**   --force-missing   Force opening a repository with missing content
**   -k|--keep         Only modify the manifest file(s)
**   --nested          Allow opening a repository inside an opened check-out
**   --nosync          Do not auto-sync the repository prior to opening even
**                     if the autosync setting is on.
**   --repodir DIR     If REPOSITORY is a URI that will be cloned, store
**                     the clone in DIR rather than in "."
**   --setmtime        Set timestamps of all files to match their SCM-side
**                     times (the timestamp of the last check-in which modified
**                     them).
**   --verbose         If passed a URI then this flag is passed on to the clone
**                     operation, otherwise it has no effect
**   --workdir DIR     Use DIR as the working directory instead of ".". The DIR
**                     directory is created if it does not exist.
**
** See also the "close" command.
** See also: [[close]], [[clone]]
*/
void cmd_open(void){
  Blob path;
  int vid;
  int emptyFlag;
  int keepFlag;
  int forceMissingFlag;
  int allowNested;
  int setmtimeFlag;              /* --setmtime.  Set mtimes on files */
  int bForce = 0;                /* --force.  Open even if non-empty dir */
  static char *azNewArgv[] = { 0, "checkout", "--latest", 0, 0, 0 };
  static char *azNewArgv[] = { 0, "checkout", "--prompt", 0, 0, 0, 0 };
  const char *zWorkDir;          /* --workdir value */
  const char *zRepo = 0;         /* Name of the repository file */
  const char *zRepoDir = 0;      /* --repodir value */
  char *zPwd;                    /* Initial working directory */
  int isUri = 0;                 /* True if REPOSITORY is a URI */
  int nLocal;                    /* Number of preexisting files in cwd */
  int bVerbose = 0;              /* --verbose option for clone */

  url_proxy_options();
  emptyFlag = find_option("empty",0,0)!=0;
  keepFlag = find_option("keep",0,0)!=0;
  keepFlag = find_option("keep","k",0)!=0;
  forceMissingFlag = find_option("force-missing",0,0)!=0;
  allowNested = find_option("nested",0,0)!=0;
  setmtimeFlag = find_option("setmtime",0,0)!=0;
  zWorkDir = find_option("workdir",0,1);
  zRepoDir = find_option("repodir",0,1);
  bForce = find_option("force","f",0)!=0;
  if( find_option("nosync",0,0) ) g.fNoSync = 1;
  bVerbose = find_option("verbose",0,0)!=0;
  zPwd = file_getcwd(0,0);

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=3 && g.argc!=4 ){
    usage("REPOSITORY-FILENAME ?VERSION?");
  }
  zRepo = g.argv[2];
  if( db_open_local() ){
    fossil_panic("already within an open tree rooted at %s", g.zLocalRoot);
  }
  file_canonical_name(g.argv[2], &path);
  db_open_repository(blob_str(&path));
  db_init_database("./_FOSSIL_", zLocalSchema, (char*)0);
  db_open_local();
  db_lset("repository", blob_str(&path));
  db_record_repository_filename(blob_str(&path));
  vid = db_int(0, "SELECT pid FROM plink y"
                  " WHERE NOT EXISTS(SELECT 1 FROM plink x WHERE x.cid=y.pid)");
  if( vid==0 ){
    db_lset_int("checkout", 1);
  }else{
    char **oldArgv = g.argv;
  if( sqlite3_strglob("http://*", zRepo)==0
   || sqlite3_strglob("https://*", zRepo)==0
   || sqlite3_strglob("ssh:*", zRepo)==0
   || sqlite3_strglob("file:*", zRepo)==0
  ){
    isUri = 1;
  }

  /* If --workdir is specified, change to the requested working directory */
  if( zWorkDir ){
    if( !isUri ){
      zRepo = file_canonical_name_dup(zRepo);
    }
    if( zRepoDir ){
      zRepoDir = file_canonical_name_dup(zRepoDir);
    }
    if( file_isdir(zWorkDir, ExtFILE)!=1 ){
      file_mkfolder(zWorkDir, ExtFILE, 0, 0);
      if( file_mkdir(zWorkDir, ExtFILE, 0) ){
        fossil_fatal("cannot create directory %s", zWorkDir);
      }
    }
    if( file_chdir(zWorkDir, 0) ){
      fossil_fatal("unable to make %s the working directory", zWorkDir);
    }
  }
  if( keepFlag==0
   && bForce==0
   && (nLocal = file_directory_size(".", 0, 1))>0
   && (nLocal>1 || isUri || !file_in_cwd(zRepo))
  ){
    fossil_fatal("directory %s is not empty\n"
                 "use the -f (--force) option to override\n"
                 "or the -k (--keep) option to keep local files unchanged",
                 file_getcwd(0,0));
  }

  if( db_open_local_v2(0, allowNested) ){
    fossil_fatal("there is already an open tree at %s", g.zLocalRoot);
  }

  /* If REPOSITORY looks like a URI, then try to clone it first */
  if( isUri ){
    char *zNewBase;   /* Base name of the cloned repository file */
    const char *zUri; /* URI to clone */
    int rc;           /* Result code from fossil_system() */
    Blob cmd;         /* Clone command to be run */
    char *zCmd;       /* String version of the clone command */

    zUri = zRepo;
    zNewBase = url_to_repo_basename(zUri);
    if( zNewBase==0 ){
      fossil_fatal("unable to deduce a repository name from the url \"%s\"",
                   zUri);
    }
    if( zRepoDir==0 ){
      zRepo = mprintf("%s.fossil", zNewBase);
    }else{
      zRepo = mprintf("%s/%s.fossil", zRepoDir, zNewBase);
    }
    fossil_free(zNewBase);
    blob_init(&cmd, 0, 0);
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    blob_append(&cmd, " clone", -1);
    if(0!=bVerbose){
      blob_append(&cmd, " --verbose", -1);
    }
    blob_append_escaped_arg(&cmd, zUri, 1);
    blob_append_escaped_arg(&cmd, zRepo, 1);
    zCmd = blob_str(&cmd);
    fossil_print("%s\n", zCmd);
    if( zWorkDir ) file_chdir(zPwd, 0);
    rc = fossil_system(zCmd);
    if( rc ){
      fossil_fatal("clone of %s failed", zUri);
    }
    blob_reset(&cmd);
    if( zWorkDir ) file_chdir(zWorkDir, 0);
  }else if( zRepoDir ){
    fossil_fatal("the --repodir option only makes sense if the REPOSITORY "
                 "argument is a URI that begins with http:, https:, ssh:, "
                 "or file:");
  }

  db_open_config(0,0);
  db_open_repository(zRepo);

  /* Figure out which revision to open. */
  if( !emptyFlag ){
    if( g.argc==4 ){
      g.zOpenRevision = g.argv[3];
    }else if( db_exists("SELECT 1 FROM event WHERE type='ci'") ){
      g.zOpenRevision = db_get("main-branch", 0);
    }
    if( autosync_loop(SYNC_PULL, !bForce, "open") && !bForce ){
      fossil_fatal("unable to auto-sync the repository");
    }
  }


#if defined(_WIN32) || defined(__CYGWIN__)
# define LOCALDB_NAME "./_FOSSIL_"
#else
# define LOCALDB_NAME "./.fslckout"
#endif
  db_init_database(LOCALDB_NAME, zLocalSchema, zLocalSchemaVmerge,
#ifdef FOSSIL_LOCAL_WAL
                   "COMMIT; PRAGMA journal_mode=WAL; BEGIN;",
#endif
                   (char*)0);
    int oldArgc = g.argc;
    db_lset_int("checkout", vid);
    azNewArgv[0] = g.argv[0];
    g.argv = azNewArgv;
  db_delete_on_failure(LOCALDB_NAME);
  db_open_local(0);
  db_lset("repository", zRepo);
  db_record_repository_filename(zRepo);
  db_set_checkout(0);
  azNewArgv[0] = g.argv[0];
  g.argv = azNewArgv;
  if( !emptyFlag ){
    g.argc = 3;
    if( oldArgc==4 ){
      azNewArgv[g.argc-1] = oldArgv[3];
    if( g.zOpenRevision ){
      azNewArgv[g.argc-1] = g.zOpenRevision;
    }else{
      azNewArgv[g.argc-1] = "--latest";
    }
    if( keepFlag ){
      azNewArgv[g.argc++] = "--keep";
    }
    if( forceMissingFlag ){
      azNewArgv[g.argc++] = "--force-missing";
    }
    checkout_cmd();
  }
  if( setmtimeFlag ){
    int const vid = db_lget_int("checkout", 0);
    if(vid!=0){
      vfile_check_signature(vid, CKSIG_SETMTIME);
    }
  }
    g.argc = 2;
    info_cmd();
  g.argc = 2;
  info_cmd();
  }
}

/*
** Print the value of a setting named zName
** Print the current value of a setting identified by the pSetting
** pointer.
*/
static void print_setting(const char *zName){
void print_setting(const Setting *pSetting, int valueOnly){
  Stmt q;
  int versioned = 0;
  if( pSetting->versionable && g.localOpen ){
    /* Check to see if this is overridden by a versionable settings file */
    Blob versionedPathname;
    blob_zero(&versionedPathname);
    blob_appendf(&versionedPathname, "%s.fossil-settings/%s",
                 g.zLocalRoot, pSetting->name);
    if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
      versioned = 1;
    }
    blob_reset(&versionedPathname);
  }
  if( valueOnly && versioned ){
    fossil_print("%s\n", db_get_versioned(pSetting->name, NULL));
    return;
  }
  if( g.repositoryOpen ){
    db_prepare(&q,
       "SELECT '(local)', value FROM config WHERE name=%Q"
       " UNION ALL "
       "SELECT '(global)', value FROM global_config WHERE name=%Q",
       zName, zName
       pSetting->name, pSetting->name
    );
  }else{
    db_prepare(&q,
      "SELECT '(global)', value FROM global_config WHERE name=%Q",
      zName
      pSetting->name
    );
  }
  if( db_step(&q)==SQLITE_ROW ){
    if( valueOnly ){
      fossil_print("%s\n", db_column_text(&q, 1));
    }else{
    printf("%-20s %-8s %s\n", zName, db_column_text(&q, 0),
        db_column_text(&q, 1));
      fossil_print("%-20s %-8s %s\n", pSetting->name, db_column_text(&q, 0),
          db_column_text(&q, 1));
    }
  }else if( valueOnly ){
    fossil_print("\n");
  }else{
    printf("%-20s\n", zName);
    fossil_print("%-20s\n", pSetting->name);
  }
  if( versioned ){
    fossil_print("  (overridden by contents of file .fossil-settings/%s)\n",
                 pSetting->name);
  }
  db_finalize(&q);
}

#if INTERFACE
/*
** Define all settings, which can be controlled via the set/unset
** command.
**
** var is the name of the internal configuration name for db_(un)set.
** If var is 0, the settings name is used.
**
** width is the length for the edit field on the behavior page, 0 is
** used for on/off checkboxes. A negative value indicates that that
** page should not render this setting. Such values may be rendered
** separately/manually on another page, e.g., /setup_access, and are
** exposed via the CLI settings command.
**
** The behaviour page doesn't use a special layout. It lists all
** set-commands and displays the 'set'-help as info.
*/
struct Setting {
  const char *name;     /* Name of the setting */
  const char *var;      /* Internal variable name used by db_set() */
  int width;            /* Width of display.  0 for boolean values and
                        ** negative for values which should not appear
                        ** on the /setup_settings page. */
  char versionable;     /* Is this setting versionable? */
  char forceTextArea;   /* Force using a text area for display? */
  char sensitive;       /* True if this a security-sensitive setting */
  const char *def;      /* Default value */
};
#endif /* INTERFACE */

/*
** SETTING: access-log      boolean default=off
**
** When the access-log setting is enabled, all login attempts (successful
** and unsuccessful) on the web interface are recorded in the "access" table
** of the repository.
*/
/*
** SETTING: admin-log       boolean default=off
**
** When the admin-log setting is enabled, configuration changes are recorded
** in the "admin_log" table of the repository.
*/
/*
** SETTING: allow-symlinks  boolean default=off sensitive
**
** When allow-symlinks is OFF, Fossil does not see symbolic links
** (a.k.a "symlinks") on disk as a separate class of object.  Instead Fossil
** sees the object that the symlink points to.  Fossil will only manage files
** and directories, not symlinks.  When a symlink is added to a repository,
** the object that the symlink points to is added, not the symlink itself.
**
** When allow-symlinks is ON, Fossil sees symlinks on disk as a separate
** object class that is distinct from files and directories.  When a symlink
** is added to a repository, Fossil stores the target filename. In other
** words, Fossil stores the symlink itself, not the object that the symlink
** points to.
**
** Symlinks are not cross-platform. They are not available on all
** operating systems and file systems. Hence the allow-symlinks setting is
** OFF by default, for portability.
*/
/*
** SETTING: auto-captcha    boolean default=on variable=autocaptcha
** If enabled, the /login page provides a button that will automatically
** fill in the captcha password.  This makes things easier for human users,
** at the expense of also making logins easier for malicious robots.
*/
/*
** SETTING: auto-hyperlink  width=16 default=1
**
** If non-zero, enable hyperlinks on web pages even for users that lack
** the "h" privilege as long as the UserAgent string in the HTTP request
** (The HTTP_USER_AGENT cgi variable) looks like it comes from a human and
** not a robot.  Details depend on the value of the setting.
**
**   (0)  Off:  No adjustments are made to the 'h' privilege based on
**        the user agent.
**
**   (1)  UserAgent and Javascript:  The the href= values of hyperlinks
**        initially point to /honeypot and are changed to point to the
**        correct target by javascript that runs after the page loads.
**        The auto-hyperlink-delay and auto-hyperlink-mouseover settings
**        influence that javascript.
**
**   (2)  UserAgent only:  If the HTTP_USER_AGENT looks human
**        then generate hyperlinks, otherwise do not.
**
** Better robot exclusion is obtained when this setting is 1 versus 2.
** However, a value of 1 causes the visited/unvisited colors of hyperlinks
** to stop working on Safari-derived web browsers.  When this setting is 2,
** the hyperlinks work better on Safari, but more robots are able to sneak
** in.
*/
/*
** SETTING: auto-hyperlink-delay     width=16 default=0
**
** When the auto-hyperlink setting is 1, the javascript that runs to set
** the href= attributes of hyperlinks delays by this many milliseconds
** after the page load.  Suggested values:  50 to 200.
*/
/*
** SETTING: auto-hyperlink-mouseover  boolean default=off
**
** When the auto-hyperlink setting is 1 and this setting is on, the
** javascript that runs to set the href= attributes of hyperlinks waits
** until either a mousedown or mousemove event is seen.  This helps
** to distinguish real users from robots. For maximum robot defense,
** the recommended setting is ON.
*/
/*
** SETTING: auto-shun       boolean default=on
** If enabled, automatically pull the shunning list
** from a server to which the client autosyncs.
*/
/*
** SETTING: autosync        width=16 default=on
** This setting determines when autosync occurs.  The setting is a
** string that provides a lot of flexibility for determining when and
** when not to autosync.  Examples:
**
**    on                     Always autosync for command where autosync
**                           makes sense ("commit", "merge", "open", "update")
**
**    off                    Never autosync.
**
**    pullonly               Only to pull autosyncs
**
**    all                    Sync with all remotes
**
**    on,open=off            Autosync for most commands, but not for "open"
**
**    off,commit=pullonly    Do not autosync, except do a pull before each
**                           "commit", presumably to avoid undesirable
**                           forks.
**
** The syntax is a comma-separated list of VALUE and COMMAND=VALUE entries.
** A plain VALUE entry is the default that is used if no COMMAND matches.
** Otherwise, the VALUE of the matching command is used.
**
** The "all" value is special in that it applies to the "sync" command in
** addition to "commit", "merge", "open", and "update".
*/
/*
** SETTING: autosync-tries  width=16 default=1
** If autosync is enabled setting this to a value greater
** than zero will cause autosync to try no more than this
** number of attempts if there is a sync failure.
*/
/*
** SETTING: backoffice-nodelay boolean default=off
** If backoffice-nodelay is true, then the backoffice processing
** will never invoke sleep().  If it has nothing useful to do,
** it simply exits.
*/
/*
** SETTING: backoffice-disable boolean default=off
** If backoffice-disable is true, then the automatic backoffice
** processing is disabled.  Automatic backoffice processing is the
** backoffice work that normally runs after each web page is
** rendered.  Backoffice processing that is triggered by the
** "fossil backoffice" command is unaffected by this setting.
**
** Backoffice processing does things such as delivering
** email notifications.  So if this setting is true, and if
** there is no cron job periodically running "fossil backoffice",
** email notifications and other work normally done by the
** backoffice will not occur.
*/
/*
** SETTING: backoffice-logfile width=40 sensitive
** If backoffice-logfile is not an empty string and is a valid
** filename, then a one-line message is appended to that file
** every time the backoffice runs.  This can be used for debugging,
** to ensure that backoffice is running appropriately.
*/
/*
** SETTING: binary-glob     width=40 versionable block-text
** The VALUE of this setting is a list of GLOB patterns matching files
** that should be treated as "binary" for committing and merging
** purposes.  Example: *.jpg,*.png  The parsing rules are complex;
** see https://fossil-scm.org/home/doc/trunk/www/globs.md#syntax
*/
#if defined(_WIN32)||defined(__CYGWIN__)||defined(__DARWIN__)
/*
** SETTING: case-sensitive  boolean default=off
** If TRUE, the files whose names differ only in case
** are considered distinct.  If FALSE files whose names
** differ only in case are the same file.  Defaults to
** TRUE for unix and FALSE for Cygwin, Mac and Windows.
*/
#endif
#if !(defined(_WIN32)||defined(__CYGWIN__)||defined(__DARWIN__))
/*
** SETTING: case-sensitive  boolean default=on
** If TRUE, the files whose names differ only in case
** are considered distinct.  If FALSE files whose names
** differ only in case are the same file.  Defaults to
** TRUE for unix and FALSE for Cygwin, Mac and Windows.
*/
#endif
/*
** SETTING: clean-glob      width=40 versionable block-text
** The VALUE of this setting is a list of GLOB patterns matching files
** that the "clean" command will delete without prompting or allowing
** undo.  Example: *.a,*.o,*.so  The parsing rules are complex;
** see https://fossil-scm.org/home/doc/trunk/www/globs.md#syntax
*/
/*
** SETTING: clearsign       boolean default=off
** When enabled, fossil will attempt to sign all commits
** with gpg.  When disabled, commits will be unsigned.
*/
/*
** SETTING: comment-format  width=16 default=1
** Set the default options for printing timeline comments to the console.
**
** The global --comfmtflags command-line option (or alias --comment-format)
** overrides this setting.
**
** Possible values are:
**    1     Activate the legacy comment printing format (default).
**
** Or a bitwise combination of the following flags:
**    0     Activate the newer (non-legacy) comment printing format.
**    2     Trim leading and trailing CR and LF characters.
**    4     Trim leading and trailing white space characters.
**    8     Attempt to break lines on word boundaries.
**   16     Break lines before the original comment embedded in other text.
**
** Note: To preserve line breaks, activate the newer (non-legacy) comment
** printing format (i.e. set to "0", or a combination not including "1").
**
** Note: The options for timeline comments displayed on the web UI can be
** configured through the /setup_timeline web page.
*/
/*
** SETTING: crlf-glob       width=40 versionable block-text
** The VALUE of this setting is a list of GLOB patterns matching files
** in which it is allowed to have CR, CR+LF or mixed line endings,
** suppressing Fossil's normal warning about this. Set it to "*" to
** disable CR+LF checking entirely.  Example: *.md,*.txt
** The crnl-glob setting is a compatibility alias.
*/
/*
** SETTING: crnl-glob       width=40 versionable block-text
** This is an alias for the crlf-glob setting.
*/
/*
** SETTING: default-perms   width=16 default=u sensitive keep-empty
** Permissions given automatically to new users.  For more
** information on permissions see the Users page in Server
** Administration of the HTTP UI.
*/
/*
** SETTING: diff-binary     boolean default=on
** If enabled, permit files that may be binary
** or that match the "binary-glob" setting to be used with
** external diff programs.  If disabled, skip these files.
*/
/*
** SETTING: diff-command    width=40 sensitive
** The value is an external command to run when performing a diff.
** If undefined, the internal text diff will be used.
*/
/*
** SETTING: dont-commit     boolean default=off
** If enabled, prevent committing to this repository, as an extra precaution
** against accidentally checking in to a repository intended to be read-only.
*/
/*
** SETTING: dont-push       boolean default=off
** If enabled, prevent this repository from pushing from client to
** server.  This can be used as an extra precaution to prevent
** accidental pushes to a public server from a private clone.
*/
/*
** SETTING: dotfiles        boolean versionable default=off
** If enabled, include --dotfiles option for all compatible commands.
*/
/*
** SETTING: editor          width=32 sensitive
** The value is an external command that will launch the
** text editor command used for check-in comments.
*/
/*
** SETTING: empty-dirs      width=40 versionable block-text
** The value is a list of pathnames parsed according to the same rules as
** the *-glob settings.  On update and checkout commands, if no directory
** exists with that name, an empty directory will be be created, even if
** it must create one or more parent directories.
*/
/*
** SETTING: encoding-glob   width=40 versionable block-text
** The VALUE of this setting is a list of GLOB patterns matching files that
** the "commit" command will ignore when issuing warnings about text files
** that may use another encoding than ASCII or UTF-8. Set to "*" to disable
** encoding checking.  Example: *.md,*.txt  The parsing rules are complex;
** see https://fossil-scm.org/home/doc/trunk/www/globs.md#syntax
*/
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
/*
** SETTING: exec-rel-paths   boolean default=on
** When executing certain external commands (e.g. diff and
** gdiff), use relative paths.
*/
#endif
#if !defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
/*
** SETTING: exec-rel-paths   boolean default=off
** When executing certain external commands (e.g. diff and
** gdiff), use relative paths.
*/
#endif

/*
** SETTING: fileedit-glob       width=40 block-text
** The VALUE of this setting is a list of GLOB patterns matching files
** which are allowed to be edited using the /fileedit page.  An empty list
** suppresses the feature.  Example: *.md,*.txt  The parsing rules are
** complex; see https://fossil-scm.org/home/doc/trunk/www/globs.md#syntax
** Note that /fileedit cannot edit binary files, so the list should not
** contain any globs for, e.g., images or PDFs.
*/
/*
** SETTING: forbid-delta-manifests    boolean default=off
** If enabled on a client, new delta manifests are prohibited on
** commits.  If enabled on a server, whenever a client attempts
** to obtain a check-in lock during auto-sync, the server will
** send the "pragma avoid-delta-manifests" statement in its reply,
** which will cause the client to avoid generating a delta
** manifest.
*/
/*
** SETTING: forum-close-policy    boolean default=off
** If true, forum moderators may close/re-open forum posts, and reply
** to closed posts. If false, only administrators may do so. Note that
** this only affects the forum web UI, not post-closing tags which
** arrive via the command-line or from synchronization with a remote.
*/
/*
** SETTING: gdiff-command    width=40 default=gdiff sensitive
** The value is an external command to run when performing a graphical
** diff. If undefined, text diff will be used.
*/
/*
** SETTING: gmerge-command   width=40 sensitive
** The value is a graphical merge conflict resolver command operating
** on four files.  Examples:
**
**     kdiff3 "%baseline" "%original" "%merge" -o "%output"
**     xxdiff "%original" "%baseline" "%merge" -M "%output"
**     meld "%baseline" "%original" "%merge" --output "%output"
*/
/*
** SETTING: hash-digits      width=5 default=10
** The number of hexadecimal digits of the SHA3 hash to display.
*/
/*
** SETTING: http-port        width=16 default=8080
** The default TCP/IP port number to use by the "server"
** and "ui" commands.
*/
/*
** SETTING: https-login      boolean default=off
** If true, then the Fossil web server will redirect unencrypted
** login screen requests to HTTPS.
*/
/*
** SETTING: ignore-glob      width=40 versionable block-text
** The VALUE of this setting is a list of GLOB patterns matching files that
** the "add", "addremove", "clean", and "extras" commands will ignore.
** Example: *.log,notes.txt  The parsing rules are complex; see
** https://fossil-scm.org/home/doc/trunk/www/globs.md#syntax
*/
/*
** SETTING: keep-glob        width=40 versionable block-text
** The VALUE of this setting is a list of GLOB patterns matching files that
** the "clean" command must not delete.  Example: build/precious.exe
** The parsing rules are complex; see
** https://fossil-scm.org/home/doc/trunk/www/globs.md#syntax
*/
/*
** SETTING: localauth        boolean default=off
** If enabled, require that HTTP connections from the loopback
** address (127.0.0.1) be authenticated by password.  If false,
** some HTTP requests might be granted full "Setup" user
** privileges without having to present login credentials.
** This mechanism allows the "fossil ui" command to provide
** full access to the repository without requiring the user to
** log in first.
**
** In order for full "Setup" privilege to be granted without a
** login, the following conditions must be met:
**
**   (1)  This setting ("localauth") must be off
**   (2)  The HTTP request arrive over the loopback TCP/IP
**        address (127.0.01) or else via SSH.
**   (3)  The request must be HTTP, not HTTPS. (This
**        restriction is designed to help prevent accidentally
**        providing "Setup" privileges to requests arriving
**        over a reverse proxy.)
**   (4)  The command that launched the fossil server must be
**        one of the following:
**        (a) "fossil ui"
**        (b) "fossil server" with the --localauth option
**        (c) "fossil http" with the --localauth option
**        (d) CGI with the "localauth" setting in the cgi script.
**
** For maximum security, set "localauth" to 1.  However, because
** of the other restrictions (2) through (4), it should be safe
** to leave "localauth" set to 0 in most installations, and
** especially on cloned repositories on workstations. Leaving
** "localauth" at 0 makes the "fossil ui" command more convenient
** to use.
*/
/*
** SETTING: lock-timeout  width=25 default=60
** This is the number of seconds that a check-in lock will be held on
** the server before the lock expires.  The default is a 60-second delay.
** Set this value to zero to disable the check-in lock mechanism.
**
** This value should be set on the server to which users auto-sync
** their work.  This setting has no effect on client repositories.  The
** check-in lock mechanism is only effective if all users are auto-syncing
** to the same server.
**
** Check-in locks are an advisory mechanism designed to help prevent
** accidental forks due to a check-in race in installations where many
** users are  committing to the same branch and auto-sync is enabled.
** As forks are harmless, there is no danger in disabling this mechanism.
** However, keeping check-in locks turned on can help prevent unnecessary
** confusion.
*/
/*
** SETTING: main-branch      width=40 default=trunk
** The value is the primary branch for the project.
*/
/*
** SETTING: manifest         width=5 versionable
** If enabled, automatically create files "manifest" and "manifest.uuid"
** in every check-out.
**
** Optionally use combinations of characters 'r' for "manifest",
** 'u' for "manifest.uuid" and 't' for "manifest.tags".  The SQLite
** and Fossil repositories both require manifests.
*/
/*
** SETTING: max-loadavg      width=25 default=0.0
** Some CPU-intensive web pages (ex: /zip, /tarball, /blame)
** are disallowed if the system load average goes above this
** value.  "0.0" means no limit.  This only works on unix.
** Only local settings of this value make a difference since
** when running as a web-server, Fossil does not open the
** global configuration database.
*/
/*
** SETTING: max-upload       width=25 default=250000
** A limit on the size of uplink HTTP requests.
*/
/*
** SETTING: mimetypes        width=40 versionable block-text
** A list of file extension-to-mimetype mappings, one per line. e.g.
** "foo application/x-foo". File extensions are compared
** case-insensitively in the order listed in this setting.  A leading
** '.' on file extensions is permitted but not required.
*/
/*
** SETTING: mtime-changes    boolean default=on
** Use file modification times (mtimes) to detect when
** files have been modified.  If disabled, all managed files
** are hashed to detect changes, which can be slow for large
** projects.
*/
/*
** SETTING: mv-rm-files      boolean default=off
** If enabled, the "mv" and "rename" commands will also move
** the associated files within the check-out -AND- the "rm"
** and "delete" commands will also remove the associated
** files from within the check-out.
*/
/*
** SETTING: pgp-command      width=40 sensitive
** Command used to clear-sign manifests at check-in.
** Default value is "gpg --clearsign -o"
*/
/*
** SETTING: proxy            width=32 default=system
** URL of the HTTP proxy. If undefined or "system", the "http_proxy"
** environment variable is consulted. If "off", a direct HTTP connection is
** used.
*/
/*
** SETTING: redirect-to-https   default=0 width=2
** Specifies whether or not to redirect unencrypted "http://" requests to
** encrypted "https://" URIs. A value of 0 (the default) means do not
** redirect, 1 means to redirect only the /login page, and 2
** means to always redirect.
**
** For security, a value of 2 is recommended.  The default value is 0
** because not all sites are TLS-capable.  But you should definitely enable
** TLS and change this setting to 2 for all public-facing repositories.
*/
/*
** SETTING: relative-paths   boolean default=on
** When showing changes and extras, report paths relative
** to the current working directory.
*/
/*
** SETTING: repo-cksum       boolean default=on
** Compute checksums over all files in each check-out as a double-check
** of correctness.  Disable this on large repositories for a performance
** improvement.
*/
/*
** SETTING: repolist-skin    width=2 default=0
** If non-zero then use this repository as the skin for a repository list
** such as created by the one of:
**
**    1)  fossil server DIRECTORY --repolist
**    2)  fossil ui DIRECTORY --repolist
**    3)  fossil http DIRECTORY --repolist
**    4)  (The "repolist" option in a CGI script)
**    5)  fossil all ui
**    6)  fossil all server
**
** All repositories are searched (in lexicographical order) and the first
** repository with a non-zero "repolist-skin" value is used as the skin
** for the repository list page.  If none of the repositories on the list
** have a non-zero "repolist-skin" setting then the repository list is
** displayed using unadorned HTML ("skinless").
**
** If repolist-skin has a value of 2, then the repository is omitted from
** the list in use cases 1 through 4, but not for 5 and 6.
*/
/*
** SETTING: self-pw-reset    boolean default=off sensitive
** Allow users to request that an email containing a hyperlink
** to the /resetpw page be sent to their email address of record,
** thus allowing forgetful users to reset their forgotten passwords
** without administrator involvement.
*/
/*
** SETTING: self-register    boolean default=off sensitive
** Allow users to register themselves through the HTTP UI.
** This is useful if you want to see other names than
** "Anonymous" in e.g. ticketing system. On the other hand
** users can not be deleted.
*/
/*
** SETTING: ssh-command      width=40 sensitive
** The command used to talk to a remote machine with  the "ssh://" protocol.
*/

/*
** SETTING: ssl-ca-location  width=40 sensitive
** The full pathname to a file containing PEM encoded
** CA root certificates, or a directory of certificates
** with filenames formed from the certificate hashes as
** required by OpenSSL.
**
** If set, this will override the OS default list of
** OpenSSL CAs. If unset, the default list will be used.
** Some platforms may add additional certificates.
** Checking your platform behaviour is required if the
** exact contents of the CA root is critical for your
** application.
**
** This setting is overridden by environment variables
** SSL_CERT_FILE and SSL_CERT_DIR.
*/
/*
** SETTING: ssl-identity     width=40 sensitive
** The full pathname to a file containing a certificate
** and private key in PEM format. Create by concatenating
** the certificate and private key files.
**
** This identity will be presented to SSL servers to
** authenticate this client, in addition to the normal
** password authentication.
*/
#ifdef FOSSIL_ENABLE_TCL
/*
** SETTING: tcl              boolean default=off sensitive
** If enabled Tcl integration commands will be added to the TH1
** interpreter, allowing arbitrary Tcl expressions and
** scripts to be evaluated from TH1.  Additionally, the Tcl
** interpreter will be able to evaluate arbitrary TH1
** expressions and scripts.
*/
/*
** SETTING: tcl-setup        width=40 block-text sensitive
** This is the setup script to be evaluated after creating
** and initializing the Tcl interpreter.  By default, this
** is empty and no extra setup is performed.
*/
#endif /* FOSSIL_ENABLE_TCL */
/*
** SETTING: tclsh            width=80 default=tclsh sensitive
** Name of the external TCL interpreter used for such things
** as running the GUI diff viewer launched by the --tk option
** of the various "diff" commands.
*/
#ifdef FOSSIL_ENABLE_TH1_DOCS
/*
** SETTING: th1-docs         boolean default=off sensitive
** If enabled, this allows embedded documentation files to contain
** arbitrary TH1 scripts that are evaluated on the server.  If native
** Tcl integration is also enabled, this setting has the
** potential to allow anybody with check-in privileges to
** do almost anything that the associated operating system
** user account could do.  Extreme caution should be used
** when enabling this setting.
*/
#endif
#ifdef FOSSIL_ENABLE_TH1_HOOKS
/*
** SETTING: th1-hooks        boolean default=off
** If enabled, special TH1 commands will be called before and
** after any Fossil command or web page.
*/
#endif
/*
** SETTING: th1-setup        width=40 block-text sensitive
** This is the setup script to be evaluated after creating
** and initializing the TH1 interpreter.  By default, this
** is empty and no extra setup is performed.
*/
/*
** SETTING: th1-uri-regexp   width=40 block-text
** Specify which URI's are allowed in HTTP requests from
** TH1 scripts.  If empty, no HTTP requests are allowed
** whatsoever.
*/
/*
** SETTING: default-csp      width=40 block-text keep-empty
**
** The text of the Content Security Policy that is included
** in the Content-Security-Policy: header field of the HTTP
** reply and in the default HTML <head> section that is added when the
** skin header does not specify a <head> section.  The text "$nonce"
** is replaced by the random nonce that is created for each web page.
**
** If this setting is an empty string or is omitted, then
** the following default Content Security Policy is used:
**
**     default-src 'self' data:;
**     script-src 'self' 'nonce-$nonce';
**     style-src 'self' 'unsafe-inline';
**     img-src * data:;
**
** The default CSP is recommended.  The main reason to change
** this setting would be to add CDNs from which it is safe to
** load additional content.
*/
/*
** SETTING: uv-sync          boolean default=off
** If true, automatically send unversioned files as part
** of a "fossil clone" or "fossil sync" command.  The
** default is false, in which case the -u option is
** needed to clone or sync unversioned files.
*/
/*
** SETTING: web-browser      width=30 sensitive
** A shell command used to launch your preferred
** web browser when given a URL as an argument.
** Defaults to "start" on windows, "open" on Mac,
** and "firefox" on Unix.
*/
/*
** SETTING: large-file-size     width=10 default=200000000
** Fossil considers any file whose size is greater than this value
** to be a "large file".  Fossil might issue warnings if you try to
** "add" or "commit" a "large file".  Set this value to 0 or less
** to disable all such warnings.
*/

/*
** Look up a control setting by its name.  Return a pointer to the Setting
** object, or NULL if there is no such setting.
**
** If allowPrefix is true, then the Setting returned is the first one for
** which zName is a prefix of the Setting name.
*/
Setting *db_find_setting(const char *zName, int allowPrefix){
  int lwr, mid, upr, c;
  int n = (int)strlen(zName) + !allowPrefix;
  int nSetting;
  const Setting *aSetting = setting_info(&nSetting);
  lwr = 0;
  upr = nSetting - 1;
  while( upr>=lwr ){
    mid = (upr+lwr)/2;
    c = fossil_strncmp(zName, aSetting[mid].name, n);
    if( c<0 ){
      upr = mid - 1;
    }else if( c>0 ){
      lwr = mid + 1;
    }else{
      if( allowPrefix ){
        while( mid>lwr && fossil_strncmp(zName, aSetting[mid-1].name, n)==0 ){
          mid--;
        }
      }
      return (Setting*)&aSetting[mid];
    }
  }
  return 0;
}

/*
** COMMAND: settings
** COMMAND: unset
** %fossil setting ?PROPERTY? ?VALUE? ?-global?
** %fossil unset PROPERTY ?-global?
** COMMAND: unset*
**
** Usage: %fossil settings ?SETTING? ?VALUE? ?OPTIONS?
**    or: %fossil unset SETTING ?OPTIONS?
**
** The "setting" command with no arguments lists all properties and their
** values.  With just a property name it shows the value of that property.
** With a value argument it changes the property for the current repository.
** The "settings" command with no arguments lists all settings and their
** values.  With just a SETTING name it shows the current value of that setting.
** With a VALUE argument it changes the property for the current repository.
**
** The "unset" command clears a property setting.
** Settings marked as versionable are overridden by the contents of the
**
**
** file named .fossil-settings/PROPERTY in the check-out root, if that
**    autosync         If enabled, automatically pull prior to commit
**                     or update and automatically push after commit or
**                     tag or branch creation.  If the the value is "pullonly"
**                     then only pull operations occur automatically.
**
** file exists.
**    binary-glob      The VALUE is a comma-separated list of GLOB patterns
**                     that should be treated as binary files for merging
**                     purposes.  Example:   *.xml
**
**    clearsign        When enabled, fossil will attempt to sign all commits
**                     with gpg.  When disabled (the default), commits will
**                     be unsigned.
**
**    diff-command     External command to run when performing a diff.
** The "unset" command clears a setting.
**                     If undefined, the internal text diff will be used.
**
**    dont-push        Prevent this repository from pushing from client to
**                     server.  Useful when setting up a private branch.
**
**    editor           Text editor command used for check-in comments.
**
**    gdiff-command    External command to run when performing a graphical
**                     diff. If undefined, text diff will be used.
**
**    http-port        The TCP/IP port number to use by the "server"
**                     and "ui" commands.  Default: 8080
**
** Settings can have both a "local" repository-only value and "global" value
** that applies to all repositories.  The local values are stored in the
** "config" table of the repository and the global values are stored in the
** configuration database.  If both a local and a global value exists for a
** setting, the local value takes precedence.  This command normally operates
** on the local settings.  Use the --global option to change global settings.
**    ignore-glob      The VALUE is a comma-separated list of GLOB patterns
**                     specifying files that the "extra" command will ignore.
**                     Example:  *.o,*.obj,*.exe
**
**    localauth        If enabled, require that HTTP connections from
**                     127.0.0.1 be authenticated by password.  If
**                     false, all HTTP requests from localhost have
**                     unrestricted access to the repository.
**
** Options:
**    mtime-changes    Use file modification times (mtimes) to detect when
**                     files have been modified.  (Default "on".)
**   --global   Set or unset the given property globally instead of
**              setting or unsetting it for the open repository only
**   --exact    Only consider exact name matches
**   --value    Only show the value of a given property (implies --exact)
**
**    pgp-command      Command used to clear-sign manifests at check-in.
**                     The default is "gpg --clearsign -o ".
**
** See also: [[configuration]]
**    proxy            URL of the HTTP proxy.  If undefined or "off" then
**                     the "http_proxy" environment variable is consulted.
**                     If the http_proxy environment variable is undefined
**                     then a direct HTTP connection is used.
**
**    web-browser      A shell command used to launch your preferred
**                     web browser when given a URL as an argument.
**                     Defaults to "start" on windows, "open" on Mac,
**                     and "firefox" on Unix.
*/
void setting_cmd(void){
  static const char *azName[] = {
    "autosync",
    "binary-glob",
    "clearsign",
    "diff-command",
    "dont-push",
    "editor",
    "gdiff-command",
    "ignore-glob",
    "http-port",
    "localauth",
    "mtime-changes",
    "pgp-command",
    "proxy",
    "web-browser",
  };
  int i;
  int globalFlag = find_option("global","g",0)!=0;
  int exactFlag = find_option("exact",0,0)!=0;
  int valueFlag = find_option("value",0,0)!=0;
  /* Undocumented "--test-for-subsystem SUBSYS" option used to test
  ** the db_get_for_subsystem() interface: */
  const char *zSubsys = find_option("test-for-subsystem",0,1);
  int unsetFlag = g.argv[1][0]=='u';
  int nSetting;
  const Setting *aSetting = setting_info(&nSetting);
  find_repository_option();
  verify_all_options();
  db_open_config(1);
  db_find_and_open_repository(0);
  db_open_config(1, 0);
  if( !globalFlag ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA | OPEN_OK_NOT_FOUND, 0);
  }
  if( !g.repositoryOpen ){
    globalFlag = 1;
  }
  if( unsetFlag && g.argc!=3 ){
    usage("PROPERTY ?-global?");
  }
  if( valueFlag ){
    if( g.argc!=3 ){
      fossil_fatal("--value is only supported when qurying a given property");
    }
    exactFlag = 1;
  }

  if( g.argc==2 ){
    for(i=0; i<sizeof(azName)/sizeof(azName[0]); i++){
      print_setting(azName[i]);
    for(i=0; i<nSetting; i++){
      print_setting(&aSetting[i], 0);
    }
  }else if( g.argc==3 || g.argc==4 ){
    const char *zName = g.argv[2];
    int n = strlen(zName);
    int n = (int)strlen(zName);
    for(i=0; i<sizeof(azName)/sizeof(azName[0]); i++){
      if( strncmp(azName[i], zName, n)==0 ) break;
    const Setting *pSetting = db_find_setting(zName, !exactFlag);
    }
    if( i>=sizeof(azName)/sizeof(azName[0]) ){
    if( pSetting==0 ){
      fossil_fatal("no such setting: %s", zName);
    }
    if( globalFlag && fossil_strcmp(pSetting->name, "manifest")==0 ){
      fossil_fatal("cannot set 'manifest' globally");
    }
    if( unsetFlag || g.argc==4 ){
      int isManifest = fossil_strcmp(pSetting->name, "manifest")==0;
      if( n!=(int)strlen(pSetting[0].name) && pSetting[1].name &&
          fossil_strncmp(pSetting[1].name, zName, n)==0 ){
        Blob x;
        int i;
        blob_init(&x,0,0);
        for(i=0; pSetting[i].name; i++){
          if( fossil_strncmp(pSetting[i].name,zName,n)!=0 ) break;
          blob_appendf(&x, " %s", pSetting[i].name);
        }
        fossil_fatal("ambiguous setting \"%s\" - might be:%s",
                     zName, blob_str(&x));
      }
      if( globalFlag && isManifest ){
        fossil_fatal("cannot set 'manifest' globally");
      }
    if( unsetFlag ){
      db_unset(azName[i], globalFlag);
    }else if( g.argc==4 ){
      db_set(azName[i], g.argv[3], globalFlag);
      if( unsetFlag ){
        db_unset(pSetting->name/*works-like:"x"*/, globalFlag);
      }else{
        db_protect_only(PROTECT_NONE);
        db_set(pSetting->name/*works-like:"x"*/, g.argv[3], globalFlag);
        db_protect_pop();
      }
      if( isManifest && g.localOpen ){
        manifest_to_disk(db_lget_int("checkout", 0));
      }
    }else{
      while( pSetting->name ){
        if( exactFlag ){
          if( fossil_strcmp(pSetting->name,zName)!=0 ) break;
        }else{
          if( fossil_strncmp(pSetting->name,zName,n)!=0 ) break;
        }
        if( zSubsys ){
          char *zValue = db_get_for_subsystem(pSetting->name, zSubsys);
          fossil_print("%s (subsystem %s) ->",  pSetting->name, zSubsys);
          if( zValue ){
            fossil_print(" [%s]", zValue);
            fossil_free(zValue);
          }
          fossil_print("\n");
        }else{
      print_setting(azName[i]);
    }
          print_setting(pSetting, valueFlag);
        }
        pSetting++;
      }
    }
  }else{
    usage("?PROPERTY? ?VALUE? ?-global?");
  }
}

/*
** The input in a timespan measured in days.  Return a string which
** describes that timespan in units of seconds, minutes, hours, days,
** or years, depending on its duration.
*/
char *db_timespan_name(double rSpan){
  if( rSpan<0 ) rSpan = -rSpan;
  rSpan *= 24.0*3600.0;  /* Convert units to seconds */
  if( rSpan<120.0 ){
    return sqlite3_mprintf("%.1f seconds", rSpan);
  }
  rSpan /= 60.0;         /* Convert units to minutes */
  if( rSpan<90.0 ){
    return sqlite3_mprintf("%.1f minutes", rSpan);
  }
  rSpan /= 60.0;         /* Convert units to hours */
  if( rSpan<=48.0 ){
    return sqlite3_mprintf("%.1f hours", rSpan);
  }
  rSpan /= 24.0;         /* Convert units to days */
  if( rSpan<=365.0 ){
    return sqlite3_mprintf("%.1f days", rSpan);
  }
  rSpan /= 356.24;         /* Convert units to years */
  return sqlite3_mprintf("%.1f years", rSpan);
}

/*
** COMMAND: test-timespan
**
** Usage: %fossil test-timespan TIMESTAMP
**
** Print the approximate span of time from now to TIMESTAMP.
*/
void test_timespan_cmd(void){
  double rDiff;
  if( g.argc!=3 ) usage("TIMESTAMP");
  sqlite3_open(":memory:", &g.db);
  rDiff = db_double(0.0, "SELECT julianday('now') - julianday(%Q)", g.argv[2]);
  fossil_print("Time differences: %s\n", db_timespan_name(rDiff));
  sqlite3_close(g.db);
  g.db = 0;
  g.repositoryOpen = 0;
  g.localOpen = 0;
}

/*
** COMMAND: test-without-rowid
**
** Usage: %fossil test-without-rowid FILENAME...
**
** Change the Fossil repository FILENAME to make use of the WITHOUT ROWID
** optimization.  FILENAME can also be the configuration database file
** (~/.fossil or ~/.config/fossil.db) or a local .fslckout or _FOSSIL_ file.
**
** The purpose of this command is for testing the WITHOUT ROWID capabilities
** of SQLite.  There is no big advantage to using WITHOUT ROWID in Fossil.
**
** Options:
**    -n|--dry-run     No changes.  Just print what would happen.
*/
void test_without_rowid(void){
  int i, j;
  Stmt q;
  Blob allSql;
  int dryRun = find_option("dry-run", "n", 0)!=0;
  for(i=2; i<g.argc; i++){
    db_open_or_attach(g.argv[i], "main");
    blob_init(&allSql, "BEGIN;\n", -1);
    db_prepare(&q,
      "SELECT name, sql FROM main.sqlite_schema "
      " WHERE type='table' AND sql NOT LIKE '%%WITHOUT ROWID%%'"
      "   AND name IN ('global_config','shun','concealed','config',"
                    "  'plink','tagxref','backlink','vcache');"
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTName = db_column_text(&q, 0);
      const char *zOrigSql = db_column_text(&q, 1);
      Blob newSql;
      blob_init(&newSql, 0, 0);
      for(j=0; zOrigSql[j]; j++){
        if( fossil_strnicmp(zOrigSql+j,"unique",6)==0 ){
          blob_append(&newSql, zOrigSql, j);
          blob_append(&newSql, "PRIMARY KEY", -1);
          zOrigSql += j+6;
          j = -1;
        }
      }
      blob_append(&newSql, zOrigSql, -1);
      blob_append_sql(&allSql,
         "ALTER TABLE \"%w\" RENAME TO \"x_%w\";\n"
         "%s WITHOUT ROWID;\n"
         "INSERT INTO \"%w\" SELECT * FROM \"x_%w\";\n"
         "DROP TABLE \"x_%w\";\n",
         zTName, zTName, blob_sql_text(&newSql), zTName, zTName, zTName
      );
      fossil_print("Converting table %s of %s to WITHOUT ROWID.\n",
                    zTName, g.argv[i]);
      blob_reset(&newSql);
    }
    blob_append_sql(&allSql, "COMMIT;\n");
    db_finalize(&q);
    if( dryRun ){
      fossil_print("SQL that would have been evaluated:\n");
      fossil_print("%.78c\n", '-');
      fossil_print("%s", blob_sql_text(&allSql));
    }else{
      db_multi_exec("%s", blob_sql_text(&allSql));
    }
    blob_reset(&allSql);
    db_close(1);
  }
}

/*
** Make sure the adminlog table exists.  Create it if it does not
*/
void create_admin_log_table(void){
  static int once = 0;
  if( once ) return;
  if( !db_table_exists("repository","admin_log") ){
    once = 1;
    db_multi_exec(
      "CREATE TABLE repository.admin_log(\n"
      " id INTEGER PRIMARY KEY,\n"
      " time INTEGER, -- Seconds since 1970\n"
      " page TEXT,    -- path of page\n"
      " who TEXT,     -- User who made the change\n"
      " what TEXT     -- What changed\n"
      ")"
    );
  }
}

/*
** Write a message into the admin_event table, if admin logging is
** enabled via the admin-log configuration option.
*/
void admin_log(const char *zFormat, ...){
  Blob what = empty_blob;
  va_list ap;
  if( !db_get_boolean("admin-log", 0) ){
      /* Potential leak here (on %z params) but
         the alternative is to let blob_vappendf()
         do it below. */
      return;
  }
  create_admin_log_table();
  va_start(ap,zFormat);
  blob_vappendf( &what, zFormat, ap );
  va_end(ap);
  db_multi_exec("INSERT INTO admin_log(time,page,who,what)"
                " VALUES(now(), %Q, %Q, %B)",
                g.zPath, g.zLogin, &what);
  blob_reset(&what);
}

/*
** COMMAND: test-database-names
**
** Print the names of the various database files:
** (1) The main repository database
** (2) The local check-out database
** (3) The global configuration database
*/
void test_database_name_cmd(void){
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  fossil_print("Repository database: %s\n", g.zRepositoryName);
  fossil_print("Local database:      %s\n", g.zLocalDbName);
  fossil_print("Config database:     %s\n", g.zConfigDbName);
}

/*
** Compute a "fingerprint" on the repository.  A fingerprint is used
** to verify that that the repository has not been replaced by a clone
** of the same repository.  More precisely, a fingerprint are used to
** verify that the mapping between SHA3 hashes and RID values is unchanged.
**
** The check-out database ("localdb") stores RID values.  When associating
** a check-out database against a repository database, it is useful to verify
** the fingerprint so that we know tha the RID values in the check-out
** database still correspond to the correct entries in the BLOB table of
** the repository.
**
** The fingerprint is based on the RCVFROM table.  When constructing a
** new fingerprint, use the most recent RCVFROM entry.  (Set rcvid==0 to
** accomplish this.)  When verifying an old fingerprint, use the same
** RCVFROM entry that generated the fingerprint in the first place.
**
** The fingerprint consists of the rcvid, a "/", and the MD5 checksum of
** the remaining fields of the RCVFROM table entry.  MD5 is used for this
** because it is 4x faster than SHA3 and 5x faster than SHA1, and there
** are no security concerns - this is just a checksum, not a security
** token.
*/
char *db_fingerprint(int rcvid, int iVersion){
  char *z = 0;
  Blob sql = BLOB_INITIALIZER;
  Stmt q;
  if( iVersion==0 ){
    /* The original fingerprint algorithm used "quote(mtime)".  But this
    ** could give slightly different answers depending on how the floating-
    ** point hardware is configured.  For example, it gave different
    ** answers on native Linux versus running under valgrind.  */
    blob_append_sql(&sql,
      "SELECT rcvid, quote(uid), quote(mtime), quote(nonce), quote(ipaddr)"
      "  FROM rcvfrom"
    );
  }else{
    /* These days, we use "datetime(mtime)" for more consistent answers */
    blob_append_sql(&sql,
      "SELECT rcvid, quote(uid), datetime(mtime), quote(nonce), quote(ipaddr)"
      "  FROM rcvfrom"
    );
  }
  if( rcvid<=0 ){
    blob_append_sql(&sql, " ORDER BY rcvid DESC LIMIT 1");
  }else{
    blob_append_sql(&sql, " WHERE rcvid=%d", rcvid);
  }
  db_prepare_blob(&q, &sql);
  blob_reset(&sql);
  if( db_step(&q)==SQLITE_ROW ){
    int i;
    md5sum_init();
    for(i=1; i<=4; i++){
      md5sum_step_text(db_column_text(&q,i),-1);
    }
    z = mprintf("%d/%s",db_column_int(&q,0),md5sum_finish(0));
  }
  db_finalize(&q);
  return z;
}
    usage("?PROPERTY? ?VALUE?");

/*
** COMMAND: test-fingerprint
**
** Usage: %fossil test-fingerprint ?RCVID?
**
** Display the repository fingerprint using the supplied RCVID or
** using the latest RCVID if not is given on the command line.
** Show both the legacy and the newer version of the fingerprint,
** and the currently stored fingerprint if there is one.
*/
void test_fingerprint(void){
  int rcvid = 0;
  db_find_and_open_repository(OPEN_ANY_SCHEMA,0);
  if( g.argc==3 ){
    rcvid = atoi(g.argv[2]);
  }else if( g.argc!=2 ){
    fossil_fatal("wrong number of arguments");
  }
  fossil_print("legacy:              %z\n", db_fingerprint(rcvid, 0));
  fossil_print("version-1:           %z\n", db_fingerprint(rcvid, 1));
  if( g.localOpen ){
    fossil_print("localdb:             %z\n", db_lget("fingerprint","(none)"));
    fossil_print("db_fingerprint_ok(): %d\n", db_fingerprint_ok());
  }
  fossil_print("Fossil version:      %s - %.10s %.19s\n",
    RELEASE_VERSION, MANIFEST_DATE, MANIFEST_UUID);
}

/*
** Set the value of the "checkout" entry in the VVAR table.
**
** Also set "fingerprint" and "checkout-hash".
*/
void db_set_checkout(int rid){
  char *z;
  db_lset_int("checkout", rid);
  if (rid != 0) {
    z = db_text(0,"SELECT uuid FROM blob WHERE rid=%d",rid);
    db_lset("checkout-hash", z);
    fossil_free(z);
    z = db_fingerprint(0, 1);
    db_lset("fingerprint", z);
    fossil_free(z);
  }
}

/*
** Verify that the fingerprint recorded in the "fingerprint" entry
** of the VVAR table matches the fingerprint on the currently
** connected repository.  Return true if the fingerprint is ok, and
** return false if the fingerprint does not match.
*/
int db_fingerprint_ok(void){
  char *zCkout;   /* The fingerprint recorded in the check-out database */
  char *zRepo;    /* The fingerprint of the repository */
  int rc;         /* Result */

  if( !db_lget_int("checkout", 0) ){
    /* We have an empty check-out, fingerprint is still NULL. */
    return 2;
  }
  zCkout = db_text(0,"SELECT value FROM localdb.vvar WHERE name='fingerprint'");
  if( zCkout==0 ){
    /* This is an older check-out that does not record a fingerprint.
    ** We have to assume everything is ok */
    return 2;
  }
  zRepo = db_fingerprint(atoi(zCkout), 1);
  rc = fossil_strcmp(zCkout,zRepo)==0;
  fossil_free(zRepo);
  /* If the initial test fails, try again using the older fingerprint
  ** algorithm */
  if( !rc ){
    zRepo = db_fingerprint(atoi(zCkout), 0);
    rc = fossil_strcmp(zCkout,zRepo)==0;
    fossil_free(zRepo);
  }
  fossil_free(zCkout);
  return rc;
}

/*
** Adds the given rid to the UNSENT table.
*/
void db_add_unsent(int rid){
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", rid);
}
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/* This CSS file holds the default implementations for all of fossil's
   CSS classes. When /style.css is requested, the rules in this file
   are emitted first, followed by (1) page-specific CSS (if any) and
   (2) skin-specific CSS.
*/
div.sidebox {
  float: right;
  background-color: white;
  border-width: medium;
  border-style: double;
  margin: 10px;
}
div.sideboxTitle {
  display: inline;
  font-weight: bold;
}
div.sideboxDescribed {
  display: inline;
  font-weight: bold;
}
span.disabled {
  color: red;
}
table.timelineTable {
  border-spacing: 0px 2px;
}
.timelineDate {
  white-space: nowrap;
}
span.timelineDisabled {
  font-style: italic;
  font-size: small;
}
tr.timelineCurrent {
  padding: .1em .2em;
  border: 1px dashed #446979;
  box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}
.timelineSelected {
  padding: .1em .2em;
  border: 2px solid lightgray;
  background-color: #ffc;
  box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}
.timelineSecondary {
  background-color: #cff;
}
tr.timelineSelected td {
  border-radius: 0;
  border-width: 0;
}
tr.timelineCurrent td {
  border-radius: 0;
  border-width: 0;
}
span.timelineLeaf {
  font-weight: bold;
}
span.timelineHistDsp {
  font-weight: bold;
}
td.timelineTime {
  vertical-align: top;
  text-align: right;
  white-space: nowrap;
}
td.timelineGraph {
  width: 20px;
  text-align: left;
  vertical-align: top;
}
span.timelineCompactComment {
  cursor: pointer;
}
span.timelineEllipsis {
  cursor: pointer;
}
.timelineModernCell, .timelineColumnarCell, .timelineDetailCell {
  vertical-align: top;
  text-align: left;
  padding: 0.75em;
  border-radius: 1em;
}
.timelineModernCell[id], .timelineColumnarCell[id], .timelineDetailCell[id] {
  background-color: #efefef;
}
.timelineModernDetail {
  font-size: 80%;
  text-align: right;
  float: right;
  opacity: 0.75;
  margin-top: 0.5em;
  margin-left: 1em;
}
.tl-canvas {
  margin: 0 6px 0 10px;
}
.tl-rail {
  width: 18px;
}
.tl-mergeoffset {
  width: 2px;
}
.tl-nodemark {
  margin-top: 5px;
}
.tl-node {
  width: 10px;
  height: 10px;
  border: 1px solid #000;
  background: #fff;
  cursor: pointer;
}
.tl-node.leaf:after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 4px;
  height: 4px;
  background: #000;
}
.tl-node.closed-leaf svg {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 10px;
  height: 10px;
  color: #000;
}
.tl-node.sel:after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 6px;
  height: 6px;
  background: red;
}
.tl-arrow {
  width: 0;
  height: 0;
  transform: scale(.999);
  border: 0 solid transparent;
}
.tl-arrow.u {
  margin-top: -1px;
  border-width: 0 3px;
  border-bottom: 7px solid #000;
}
.tl-arrow.u.sm {
  border-bottom: 5px solid #000;
}
.tl-line {
  background: #000;
  width: 2px;
}
.tl-arrow.merge {
  height: 1px;
  border-width: 2px 0;
}
.tl-arrow.merge.l {
  border-right: 3px solid #000;
}
.tl-arrow.merge.r {
  border-left: 3px solid #000;
}
.tl-line.merge {
  width: 1px;
}
.tl-arrow.cherrypick {
  height: 1px;
  border-width: 2px 0;
}
.tl-arrow.cherrypick.l {
  border-right: 3px solid #000;
}
.tl-arrow.cherrypick.r {
  border-left: 3px solid #000;
}
.tl-line.cherrypick.h {
  width: 0px;
  border-top: 1px dashed #000;
  border-left: 0px dashed #000;
  background: rgba(255,255,255,0);
}
.tl-line.cherrypick.v {
  width: 0px;
  border-top: 0px dashed #000;
  border-left: 1px dashed #000;
  background: rgba(255,255,255,0);
}
.tl-arrow.warp {
  margin-left: 1px;
  border-width: 3px 0;
  border-left: 7px solid #600000;
}
.tl-line.warp {
  background: #600000;
}
.tl-line.dotted.v {
  width: 0px;
  border-left-width: 2px;
  border-left-style: dotted;
  background: rgba(255,255,255,0);
}
.tl-tooltip {
  text-align: center;
  padding: 5px 1em;
  border: 1px solid black;
  border-radius: 6px;
  position: absolute;
  z-index: 100;
  box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.75);
}

span.tagDsp {
  font-weight: bold;
}
span.wikiError {
  font-weight: bold;
  color: red;
}
span.infoTagCancelled {
  font-weight: bold;
  text-decoration: line-through;
}
span.infoTag {
  font-weight: bold;
}
span.wikiTagCancelled {
  text-decoration: line-through;
}
div.columns {
  padding: 0 2em 0 2em;
  max-width: 1000px;
}
div.columns > ul {
  margin: 0;
  padding: 0 0 0 1em;
}
div.columns > ul li:first-child {
  margin-top:0px;
}
.columns li {
  break-inside: avoid;
  page-break-inside: avoid;
}
body.help .columns li {
  white-space: nowrap /* keep command name aliases from wrapping */;
}
.filetree {
  margin: 1em 0;
  line-height: 1.5;
}
.filetree > ul {
  display: inline-block;
}
.filetree ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.filetree ul.collapsed {
  display: none;
}
.filetree ul ul {
  position: relative;
  margin: 0 0 0 21px;
}
.filetree li {
  position: relative;
  margin: 0;
  padding: 0;
}
.filetree li li:before {
  content: '';
  position: absolute;
  top: -.8em;
  left: -14px;
  width: 14px;
  height: 1.5em;
  border-left: 2px solid #aaa;
  border-bottom: 2px solid #aaa;
}
.filetree li > ul:before {
  content: '';
  position: absolute;
  top: -1.5em;
  bottom: 0;
  left: -35px;
  border-left: 2px solid #aaa;
}
.filetree li.last > ul:before {
  display: none;
}
.filetree a {
  position: relative;
  z-index: 1;
  display: table-cell;
  min-height: 16px;
  padding-left: 21px;
  background-image: url("data:image/gif;base64,R0lGODlhEAAQAJEAAP\/\/\/y\
EhIf\/\/\/wAAACH5BAEHAAIALAAAAAAQABAAAAIvlIKpxqcfmgOUvoaqDSCxrEEfF14GqFX\
ImJZsu73wepJzVMNxrtNTj3NATMKhpwAAOw==");
  background-position: center left;
  background-repeat: no-repeat;
}
ul.browser {
  list-style-type: none;
  padding: 10px;
  margin: 0px;
  white-space: nowrap;
}
ul.browser li.file {
  padding-top: 2px;
}
ul.browser li.file > a {
  padding-left: 20px;
  background-repeat: no-repeat;
  background-position: 0px center;
  background-image: url("data:image/gif;base64,R0lGODlhEAAQAJEAAP\/\/\/\
yEhIf\/\/\/wAAACH5BAEHAAIALAAAAAAQABAAAAIvlIKpxqcfmgOUvoaqDSCxrEEfF14Gq\
FXImJZsu73wepJzVMNxrtNTj3NATMKhpwAAOw==");
}
ul.browser li.dir {
  padding-top: 2px;
}
ul.browser li.dir > a {
  padding-left: 20px;
  background-image: url("data:image/gif;base64,R0lGODlhEAAQAJEAAP/WVCIiI\
v\/\/\/wAAACH5BAEHAAIALAAAAAAQABAAAAInlI9pwa3XYniCgQtkrAFfLXkiFo1jaXpo+\
jUs6b5Z/K4siDu5RPUFADs=");
  background-repeat: no-repeat;
  background-position: 0px center;
}
div.filetreeline {
  display: table;
  width: 100%;
  white-space: nowrap;
}
.filetree .dir > div.filetreeline > a {
  background-image: url("data:image/gif;base64,R0lGODlhEAAQAJEAAP/WVCIiI\
v\/\/\/wAAACH5BAEHAAIALAAAAAAQABAAAAInlI9pwa3XYniCgQtkrAFfLXkiFo1jaXpo\
+jUs6b5Z/K4siDu5RPUFADs=");
}
div.filetreeage {
 display: table-cell;
 padding-left: 1.5em;
 text-align: right;
 width: 8em;
}
div.filetreesize {
 display: table-cell;
 padding-left: 1em;
 text-align: right;
 width: 7em;
}
div.filetreeline:hover {
 background-color: #eee;
}
table.login_out {
  text-align: left;
  margin-right: 10px;
  margin-left: 10px;
  margin-top: 10px;
}
div.captcha {
  text-align: center;
  padding: 1ex;
}
table.captcha {
  margin: auto;
  padding: 10px;
  border-width: 4px;
  border-style: double;
  border-color: black;
}
pre.captcha {
  font-size: 50%;
}
td.login_out_label {
  text-align: center;
}
span.loginError {
  color: red;
}
span.note {
  font-weight: bold;
}
span.textareaLabel {
  font-weight: bold;
}
table.usetupLayoutTable {
  outline-style: none;
  padding: 0;
  margin: 25px;
}
td.usetupColumnLayout {
  vertical-align: top
}
table.usetupUserList {
  outline-style: double;
  outline-width: 1px;
  padding: 10px;
}
th.usetupListUser {
  text-align: right;
  padding-right: 20px;
}
th.usetupListCap {
  text-align: center;
  padding-right: 15px;
}
th.usetupListCon {
  text-align: left;
}
td.usetupListUser {
  text-align: right;
  padding-right: 20px;
  white-space:nowrap;
}
td.usetupListCap {
  text-align: center;
  padding-right: 15px;
}
td.usetupListCon {
  text-align: left
}
div.ueditCapBox {
  margin-right: 20px;
  margin-bottom: 20px;
}
td.usetupEditLabel {
  text-align: right;
  vertical-align: top;
  white-space: nowrap;
}
span.ueditInheritNobody {
  color: green;
  padding: .2em;
}
span.ueditInheritDeveloper {
  color: red;
  padding: .2em;
}
span.ueditInheritReader {
  color: black;
  padding: .2em;
}
span.ueditInheritAnonymous {
  color: blue;
  padding: .2em;
}
span.capability {
  font-weight: bold;
}
span.usertype {
  font-weight: bold;
}
span.usertype:before {
  content:"'";
}
span.usertype:after {
  content:"'";
}
p.missingPriv {
 color: blue;
}
span.wikiruleHead {
  font-weight: bold;
}
td.tktDspLabel {
  text-align: right;
}
td.tktDspValue {
  text-align: left;
  vertical-align: top;
  background-color: #d0d0d0;
}
td.tktTlOpen {
  color: #800;
}
td.tktTlClosed {
  color: #888;
}
span.tktError {
  color: red;
  font-weight: bold;
}
table.rpteditex {
  float: right;
  margin: 0;
  padding: 0;
  width: 125px;
  text-align: center;
  border-collapse: collapse;
  border-spacing: 0;
}
table.report {
  border: 1px solid #999;
  margin: 1em 0 1em 0;
  cursor: pointer;
}
td.rpteditex {
  border-width: thin;
  border-color: #000000;
  border-style: solid;
}
div.endContent {
  clear: both;
}
p.generalError {
  color: red;
}
p.tktsetupError {
  color: red;
  font-weight: bold;
}
p.xfersetupError {
  color: red;
  font-weight: bold;
}
p.thmainError {
  color: red;
  font-weight: bold;
}
span.thTrace {
  color: red;
}
p.reportError {
  color: red;
  font-weight: bold;
}
blockquote.reportError {
  color: red;
  font-weight: bold;
}
p.noMoreShun {
  color: blue;
}
p.shunned {
  color: blue;
}
span.brokenlink {
  color: red;
}
ul.filelist {
  margin-top: 3px;
  line-height: 100%;
}
ul.filelist li {
  padding-top: 1px;
}

/* Rules governing diff layout and colors */
table.diff {
  width: 100%;
  border-spacing: 0;
  border-radius: 5px;
  border: 1px solid black;
  font-size: 80%;
}
table.diff td.diffln{
  padding: 0;
}
table.diff td.diffln > pre{
  padding: 0 0.25em 0 0.5em;
  margin: 0;
}
table.diff td {
  vertical-align: top;
  padding: 0;
  overflow: hidden /*work around inner PRE slight overflow/overlap*/;
}
table.diff pre {
  margin: 0 0 0 0;
  padding: 0 0.5em;
  line-height: 1.275/*for mobile: forum post e6f4ee7de98b55c0*/;
  text-size-adjust: none
  /* ^^^ attempt to keep mobile from inflating some text */;
}
table.diff pre > ins,
table.diff pre > del {
  /* Fill platform-dependent color gaps caused by
     inflated line-height */
  padding: 0.062em 0 0.062em 0;
}
table.diff pre > ins > *,
table.diff pre > del > *{
  /* Avoid odd-looking color swatches in conjunction with
     (table.diff pre > ins/del) padding */
  padding: inherit;
}
table.diff td.diffln > pre {
  padding: 0 0.35em 0 0.5em;
}
table.diff td > pre {
  box-sizing: border-box;
  /* Workaround for "slight wiggle" when using mouse-wheel in some FF
     versions, apparently caused by the increased line-height forcing
     these elements to be a *tick* larger than they should be but not
     large enough to force a scroll bar to show up. */
  overflow-y: hidden;
}
tr.diffskip.jchunk {
  /* jchunk gets added from JS to diffskip rows when they are
     plugged into the /jchunk route. */
  background-color: aliceblue;
  padding: 0;
}
tr.diffskip.jchunk > td {
  padding: 0.25em 0.5em;
  margin: 0;
}
tr.diffskip.jchunk:hover {
  /*background-color: rgba(127,127,127,0.5);
  cursor: pointer;*/
}
tr.diffskip > td.chunkctrl {
  text-align: left;
}
tr.diffskip > td.chunkctrl > div {
  display: flex;
  align-items: center;
}
tr.diffskip > td.chunkctrl > div > span.error {
  padding: 0.25em 0.5em;
  border-radius: 0.5em;
}
tr.diffskip > td.chunkctrl .jcbutton
/* class name .button breaks w/ some skins! */ {
  min-width: 3.5ex;
  max-width: 3.5ex;
  text-align: center;
  display: inline-block;
  padding: 0.1em 1em;
  margin: 0 1em 0 0;
  background-color: rgba(127,127,127,0.2);
  border-style: outset;
  border-width: 0;
  border-radius: 0.5em;
  opacity: 0.7;
}
tr.diffskip > td.chunkctrl .jcbutton.up:not(.down){
  /* Simulate an arrow pointing up */
  border-radius: 3em 3em 0.25em 0.25em;
}
tr.diffskip > td.chunkctrl .jcbutton.down:not(.up){
  /* Simulate an arrow pointing down */
  border-radius: 0.25em 0.25em 3em 3em;
}
tr.diffskip > td.chunkctrl .jcbutton > span {
  /* In order to increase the glyph size w/o increasing the em-based
     button size or border-radius, we need an extra layer of DOM
     element for the glyph. */
  font-size: 150%;
}
tr.diffskip > td.chunkctrl .jcbutton.up > span::before {
  content: '⇡';
}
tr.diffskip > td.chunkctrl .jcbutton.down > span::before {
  content: '⇣';
}
tr.diffskip > td.chunkctrl .jcbutton.up.down > span::before {
  content: '⇡⇣';
}
tr.diffskip > td.chunkctrl .jcbutton:hover {
  cursor: pointer;
  opacity: 1;
  filter: contrast(1);
}
tr.diffchunk {
  display: grid;
  gap: 0px 0px;
  grid-template-rows: 1fr;
}
table.splitdiff tr.diffchunk {
  grid-template-columns: auto 1fr auto auto 1fr;
  grid-template-areas: "difflnl difftxtl diffsep difflnr difftxtr";
}
table.udiff tr.diffchunk {
  grid-template-columns: auto auto auto 1fr;
  grid-template-areas: "difflnl difflnr diffsep difftxtu";
}
td.difflnl { grid-area: difflnl; }
td.difflnr { grid-area: difflnr; }
td.difftxtu { grid-area: difftxtu; }
td.difftxtl  { grid-area: difftxtl; }
td.difftxtr  { grid-area: difftxtr; }
td.diffln {
  width: fit-content;
  text-align: right;
  padding: 0 1em 0 0;
}
td.difflne {
  padding-bottom: 0.4em;
}
td.diffsep {
  width: fit-content;
  padding: 0 0.3em 0 0.5em;
  grid-area: diffsep;
}
td.difftxt pre {
  overflow-x: auto;
}
td.diffln ins {
  background-color: #a0e4b2;
  text-decoration: none;
}
td.diffln del {
  background-color: #ffc0c0;
  text-decoration: none;
}
td.difftxt del {
  background-color: #ffe8e8;
  text-decoration: none;
}
td.difftxt del > del {
  background-color: #ffc0c0;
  text-decoration: none;
  font-weight: bold;
}
td.difftxt del > del.edit {
  background-color: #c0c0ff;
  text-decoration: none;
  font-weight: bold;
}
td.difftxt ins {
  background-color: #dafbe1;
  text-decoration: none;
}
td.difftxt ins > ins {
  background-color: #a0e4b2;
  text-decoration: none;
  font-weight: bold;
}
td.difftxt ins > ins.edit {
  background-color: #c0c0ff;
  text-decoration: none;
  font-weight: bold;
}
body.tkt div.content li > table.udiff {
  margin-left: 1.5em;
  margin-top: 0.5em;
}
body.tkt div.content ol.tkt-changes > li:target > p > span {
  border-bottom: 3px solid gold;
}
body.tkt div.content ol.tkt-changes > li:target > ol {
  border-left: 1px solid gold;
}

span.modpending {
  color: #b03800;
  font-style: italic;
}
pre.th1result {
  white-space: pre-wrap;
  word-wrap: break-word;
}
pre.th1error {
  white-space: pre-wrap;
  word-wrap: break-word;
  color: red;
}
pre.textPlain {
  white-space: pre-wrap;
  word-wrap: break-word;
}
.statistics-report-graph-line {
  border: 2px solid #446979;
  background-color: #446979;
}
.statistics-report-graph-extra {
  border: 2px dashed #446979;
  border-left-style: none;
}
.statistics-report-table-events th {
  padding: 0 1em 0 1em;
}
.statistics-report-table-events td {
  padding: 0.1em 1em 0.1em 1em;
}
.statistics-report-row-year {
  text-align: left;
}
.statistics-report-week-number-label {
  text-align: right;
  font-size: 0.8em;
}
.statistics-report-week-of-year-list {
  font-size: 0.8em;
}
#usetupEditCapability {
  font-weight: bold;
}
table.adminLogTable {
  text-align: left;
}
.adminLogTable .adminTime {
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}
.fileage table {
  border-spacing: 0;
}
.fileage tr:hover {
  background-color: #eee;
}
.fileage td {
  vertical-align: top;
  text-align: left;
  border-top: 1px solid #ddd;
  padding-top: 3px;
}
.fileage td:first-child {
  white-space: nowrap;
}
.fileage td:nth-child(2) {
  padding-left: 1em;
  padding-right: 1em;
}
.fileage td:nth-child(3) {
  word-wrap: break-word;
  max-width: 50%;
}
.brlist table {
  border-spacing: 0;
}
.brlist table th {
  text-align: left;
  padding: 0px 1em 0.5ex 0px;
  vertical-align: bottom;
}
.brlist table td {
  padding: 0px 2em 0px 0px;
  white-space: nowrap;
}
th.sort:after {
  margin-left: .4em;
  cursor: pointer;
  text-shadow: 0 0 0 #000; 
}
th.sort.none:after {
  content: '\2666';
}
th.sort.asc:after {
  content: '\2193';
}
th.sort.desc:after {
  content: '\2191';
}
span.snippet>mark {
  background-color: inherit;
  font-weight: bold;
}
div.searchForm {
  text-align: center;
}
p.searchEmpty {
  font-style: italic;
}
.clutter {
  display: none;
}
table.label-value th {
  vertical-align: top;
  text-align: right;
  padding: 0.2ex 1ex;
}
table.forum_post {
  margin-top: 1ex;
  margin-bottom: 1ex;
  margin-left: 0;
  margin-right: 0;
  border-spacing: 0;
}
span.forum_author {
  color: #888;
  font-size: 75%;
}
span.forum_author::after {
  content: " | ";
}
span.forum_age {
  color: #888;
  font-size: 85%;
}
span.forum_buttons {
  font-size: 85%;
}
span.forum_buttons::before {
  color: #888;
  content: " | ";
}
span.forum_npost {
  color: #888;
  font-size: 75%;
}
table.forumeditform td {
  vertical-align: top;
  border-collapse: collapse;
  padding: 1px;
}
div.forum_body p {
  margin-top: 0;
}
div.forum-editor-widget{
  display: flex;
  flex-direction: column;
}
div.forum-editor-widget > textarea {
  max-width: initial;
}
td.form_label {
  vertical-align: top;
  text-align: right;
}
.debug {
  background-color: #ffc;
  border: 2px solid #ff0;
}
div.forumEdit {
  border: 1px solid black;
  padding-left: 1ex;
  padding-right: 1ex;
}
div.forumTimeline {
  border: 1px solid black;
  padding-left: 1ex;
  padding-right: 1ex;
  max-width: 50em;
  overflow: auto;
}
div.forumTimeline code {
  white-space: pre-wrap;
}
div.markdown code {
  white-space: pre-wrap;
}
div.forumTime {
  border: 1px solid black;
  padding-left: 1ex;
  padding-right: 1ex;
  margin-top: 1ex;
  display: flex;
  flex-direction: column;
}
div.forumClosed {
}
div.forumClosed > .forumPostBody {
  opacity: 0.7;
}
div.forumClosed > .forumPostHdr::before {
  content: "[CLOSED] ";
}
/*div.forumClosed > div.forumPostBody {
  filter: blur(5px);
}*/
div.forumpost-closure-warning {
  margin-top: 1em;
  margin-bottom: 1em;
  border-style: solid;
  padding: 0.25em 0.5em;
  background: #f4f400bb;
  /*font-weight: bold;*/
}
div.forumpost-closure-warning input[type=submit] {
  padding: 0.25em;
}
div.forumpost-single-controls {
  /* UI controls along the bottom of a single post
  ** in the thread view. */
}
.forum div > form {
  margin: 0.5em 0;
  display: inline-block;
}
body.cpage-forumedit div > form,
body.cpage-forume2 div > form{
  width: 100%;
}
.forum div > form > * {
  margin-bottom: 0.35em;
}
.forum-post-collapser {
  /* Common style for the bottom-of-post and right-of-post
     expand/collapse widgets. */
  font-size: 0.8em;
  padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 0 0 0.5em 0.5em;
  background-color: rgba(0, 0, 0, 0.05);
  opacity: 0.8;
  cursor: pointer;
}
.forum-post-collapser.bottom {
  margin: 0 0 0.4em 0;
  height: 1.75em;
  line-height: 1.75em;
  /* ^^^ Those sizes are finely tuned for the current selection of
     arrow characters. If those change, these should, too. Remember that
     FF/Chrome simply do not agree on alignment with most values :/.  */
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
.forum-post-collapser.bottom > span {
  margin: 0 1em 0 1em;
  vertical-align: middle;
}
.forum-post-collapser.bottom > span::before {
  content: "⇣⇣⇣";
}
.forum-post-collapser.bottom.expanded > span::before {
  content: "⇡⇡⇡" /*reminder: FF/Chrome cannot agree on alignment of â®*/;
}
div.forumPostBody{
  max-height: 50em;
  overflow: auto;
}
div.forumPostBody.with-expander {
  display: flex;
  flex-direction: row;
  overflow: auto;
}
div.forumPostBody.with-expander:not(.expanded) > :first-child {
  overflow-y: hidden;
}
div.forumPostBody.with-expander > *:first-child {
  /* Main content DIV/PRE */
  overflow: auto;
  flex: 10 1 auto;
}
div.forumPostBody.with-expander.expanded > *:first-child {
  margin-bottom: 0.5em /* try to suppress scroll bar */;
}
div.forumPostBody.with-expander .forum-post-collapser.right {
  /* "Tap zone" for expansion of the post, sits to the right of the
     post's content. */
  flex: 1 10 auto;
  min-width: 1.25em;
  max-width: 1.25em;
  margin: 0 0 0 0.2em;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  border-radius: 0.1em;
  cursor: pointer;
  border-bottom: 0;
  border-radius: 0 0.5em 0 0;
}
div.forumPostBody.with-expander .forum-post-collapser.right > span:before {
  content: "⇣";
}
div.forumPostBody.with-expander.expanded .forum-post-collapser.right > span:before {
  content: "⇡";
}
div.forumPostBody.expanded {
  max-height: initial;
}
div.forumPostBody.shrunken {
  /* When an expandable post is un-expanded, it is shrunkend down
     to this size instead of its original size. */
  max-height: 8em;
}
span.forumPostReplyTitle {
  /* thread title part of the page header when replying to a post */
  font-style: italic;
}

div.forumSel {
  background-color: #cef;
}
div.forumObs {
  color: #bbb;
}

div.setup_forum-column {
  display: flex;
  flex-direction: column;
}

body.cpage-setup_forum > .content table {
  margin-bottom: 1em;
}
body.cpage-setup_forum > .content table.bordered {
  border: 1px solid;
  border-radius: 0.25em;
}
body.cpage-setup_forum > .content table td,
body.cpage-setup_forum > .content table th {
  text-align: left;
}
body.cpage-setup_forum table.forum-settings-list > tbody > tr > td {
  min-width: 2em;
}

#capabilitySummary {
  text-align: center;
}
#capabilitySummary td {
  padding-left: 3ex;
  padding-right: 3ex;
}
#capabilitySummary th {
  padding-left: 1ex;
  padding-right: 1ex;
}
.capsumOff {
  background-color: #bbb;
}
.capsumRead {
  background-color: #bfb;
}
.capsumWrite {
  background-color: #ffb;
}
label {
  white-space: nowrap;
}
label[for] {
  cursor: pointer;
}
.copy-button {
  display: inline-block;
  width: 14px;
  height: 14px;
/*Note: .24em is slightly smaller than the average width of a normal space.*/
  margin: -2px .24em 0 0;
  padding: 0;
  border: 0;
  vertical-align: middle;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' \
viewBox='0,0,14,14'%3E%3Cpath style='fill:black;opacity:0' \
d='M14,14H0V0h14v14z'/%3E%3Cpath style='fill:rgb(240,240,240)' \
d='M1,0h6.6l2,2h1l3.4,3.4v8.6h-10v-2h-3z'/%3E%3Cpath style='fill:rgb(64,64,64)' \
d='M2,1h5l3,3v7h-8z'/%3E%3Cpath style='fill:rgb(248,248,248)' \
d='M3,2h3.6l2.4,2.4v5.6h-6z'/%3E%3Cpath style='fill:rgb(80,128,208)' \
d='M4,5h4v1h-4zm0,2h4v1h-4z'/%3E%3Cpath style='fill:rgb(64,64,64)' \
d='M5,3h5l3,3v7h-8z'/%3E%3Cpath style='fill:rgb(248,248,248)' \
d='M10,4.4v1.6h1.6zm-4,-0.6h3v3h-3zm0,3h6v5.4h-6z'/%3E%3Cpath style='fill:rgb(80,128,208)' \
d='M7,8h4v1h-4zm0,2h4v1h-4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  cursor: pointer;
}
.copy-button.disabled {
  filter: grayscale(1);
  opacity: 0.4;
}
.copy-button-flipped {
/*Note: .16em is suitable for element grouping.*/
  margin-left: .16em;
  margin-right: 0;
}
.nobr {
  white-space: nowrap;
}
.accordion {
  cursor: pointer;
}
.accordion_btn {
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: .5em;
  vertical-align: middle;
}
/* Note: the order of the next 3 entries should be
   maintained for the hierarchical cascade to work. */
.accordion > .accordion_btn_plus {
  display: none;
}
.accordion_closed > .accordion_btn_minus {
  display: none;
}
.accordion_closed > .accordion_btn_plus {
  display: inline-block;
}
.accordion_panel {
  overflow: hidden;
  transition: max-height 0.25s ease-out;
}
.error {
  color: darkred;
  background: yellow;
}
.warning {
  color: black;
  background: yellow;
}
.hidden, .initially-hidden {
  /* The framework-wide way of hiding elements is to assign them th
     .hidden class. To make them visible again, remove it. The
     !important qualifiers are unfortunate but sometimes necessary
     when hidden element has other classes which specify
     visibility-related options. The .initially-hidden class is for
     pages which need to show, e.g., a progress widget while a large
     WASM blob loads. Elements aside from that load-time widget can be
     made .initially-hidden and then have that class removed once the
     long-running startup process is done. See /pikchrshow for an
     example. */
  position: absolute !important;
  opacity: 0 !important;
  pointer-events: none !important;
  display: none !important;
}
input {
  max-width: 95%;
}
textarea {
  max-width: 95%;
}
img {
  max-width: 100%;
}
hr {
  /* Needed to keep /dir README.txt from floating right in some skins */
  clear: both;
}

/**
  .tab-xxx: styles for fossil.tabs.js.
*/
.tab-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.tab-container > #fossil-status-bar {
  margin-top: 0;
}
.tab-container > .tabs {
  padding: 0.25em;
  margin: 0;
  display: flex;
  flex-direction: column;
  border-width: 1px;
  border-style: outset;
  border-color: inherit;
}
.tab-container > .tabs > .tab-panel {
  align-self: stretch;
  flex: 10 1 auto;
  display: block;
  border: 0;
  padding: 0;
  margin: 0;
}
.tab-container > .tab-bar {
  display: flex;
  flex-direction: row;
  flex: 1 10 auto;
  align-self: stretch;
  flex-wrap: wrap;
}
.tab-container > .tab-bar > .tab-button {
  display: inline-block;
  border-radius: 0.25em 0.25em 0 0;
  margin: 0 0.1em;
  padding: 0.25em 0.75em;
  align-self: baseline;
  border-color: inherit;
  border-width: 1px;
  border-bottom: none;
  border-top-style: inset;
  border-left-style: inset;
  border-right-style: inset;
  cursor: pointer;
  opacity: 0.6;
}
.tab-container > .tab-bar > .tab-button.selected {
  text-decoration: underline;
  opacity: 1.0;
  border-top-style: outset;
  border-left-style: outset;
  border-right-style: outset;
}

/**
   The flex-xxx classes can be used to create basic flexbox layouts
   through the application of classes to the containing/contained
   objects.
*/
.flex-container {
    display: flex;
}
.flex-container.flex-row {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.flex-container .flex-grow {
  flex-grow: 10;
  flex-shrink: 0;
}
.flex-container .flex-shrink {
  flex-grow: 0;
  flex-shrink: 10;
}
.flex-container.flex-row.stretch {
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: stretch;
  margin: 0;
}
.flex-container.flex-column {
  flex-direction: column;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}
.flex-container.flex-column.stretch {
  align-items: stretch;
  margin: 0;
}
.flex-container.child-gap-small > * {
  margin: 0.25em;
}
#fossil-status-bar {
  display: block;
  border-width: 1px;
  border-style: inset;
  border-color: inherit;
  min-height: 1.5em;
  font-size: 1.2em;
  padding: 0.2em;
  margin: 0.25em 0;
  flex: 0 0 auto;
}
.font-size-80 {
  font-size: 80%;
}
.font-size-100 {
  font-size: 100%;
}
.font-size-125 {
  font-size: 125%;
}
.font-size-150 {
  font-size: 150%;
}
.font-size-175 {
  font-size: 175%;
}
.font-size-200 {
  font-size: 200%;
}

/**
   .input-with-label is intended to be a wrapper element which contain
   both a LABEL tag and an INPUT or SELECT control.  The wrapper is
   "necessary", as opposed to placing the INPUT in the LABEL, so that
   we can include multiple INPUT elements (e.g. a set of radio
   buttons). Note that these elements must sometimes be BLOCK elements
   (e.g. DIV) so that certain nesting constructs are legal.
*/
.input-with-label {
  border: 1px inset rgba(128, 128, 128, 0.5);
  border-radius: 0.25em;
  padding: 0.1em;
  margin: 0 0.5em;
  display: inline-block
           /* We would really like flex layout but changing that
              currently introduces a good deal of UI breakage
              to chase down. The advantage would be better alignment
              of the contained elements. */;
  cursor: default;
  white-space: nowrap;
}
.submenu .input-with-label {
  border: none;
}
.input-with-label > * {
  vertical-align: middle;
}
.input-with-label > label {
  display: inline; /* some skins set label display to block! */
  cursor: pointer;
  white-space: nowrap;
}
.input-with-label > input {
  margin: 0;
}
.input-with-label > button {
  margin: 0;
}
.input-with-label > select {
  margin: 0;
}
.input-with-label > input[type=text] {
  margin: 0;
}
.input-with-label > textarea {
  margin: 0;
}
/* Browsers are unfortunately inconsistent in how they
   align checkboxes and radio buttons, even if they're
   given the same vertical-align value. 'middle' seems to
   be the least bad option, rather than the ideal. */
.input-with-label > input[type=checkbox] {
  vertical-align: middle;
}
.input-with-label > input[type=radio] {
  vertical-align: middle;
}
.input-with-label > label {
  font-weight: initial;
  margin: 0 0.25em 0 0.25em;
  vertical-align: middle;
}

table.numbered-lines {
  width: 100%;
  table-layout: fixed /* required to keep ultra-wide code from exceeding
                         window width, and instead force a scrollbar
                         on them. */;
}
table.numbered-lines > tbody > tr {
  line-height: 1.35;
  white-space: pre;
}
table.numbered-lines > tbody > tr > td {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  white-space: inherit;
  margin: 0;
  vertical-align: top;
  padding: 0.25em 0 0 0 /*prevents slight overlap at top */;
}
table.numbered-lines td.line-numbers {
  width: 4.5em;
}
table.numbered-lines td.line-numbers > pre {
  margin: 0.25em/*must match top PADDING of td.file-content
                  > pre > code*/ 0 0 0;
  padding: 0;
}
table.numbered-lines td.line-numbers span {
  display: inline-block;
  margin: 0;
  padding: 0;
  line-height: inherit;
  font-size: inherit;
  font-family: inherit;
  cursor: pointer;
  white-space: pre;
  margin-right: 2px/*keep selection from nudging the right column */;
  text-align: right;
}
table.numbered-lines td.line-numbers span:hover {
  background-color: rgba(112, 112, 112, 0.25);
}
table.numbered-lines td.file-content {
  padding-left: 0.25em;
}
table.numbered-lines td.file-content > pre,
table.numbered-lines td.file-content > pre > code {
  margin: 0;
  padding: 0;
  line-height: inherit;
  font-size: inherit;
  font-family: inherit;
  white-space: pre;
  display: block/*necessary for certain skins!*/;
}
table.numbered-lines td.file-content > pre {
}
table.numbered-lines td.file-content > pre > code {
  overflow: auto;
  padding-left: 0.5em;
  padding-right: 0.5em;
  padding-top: 0.25em/*any top padding here must match the top MARGIN of
                       td.line-numbers's first span child or the
                       lines/code will get misaligned. */;
  padding-bottom: 0.25em/*prevents a slight overlap at bottom from
                          triggering a scroller*/;
}
table.numbered-lines td.file-content > pre > code > * {
  /* Defense against syntax highlighters indirectly messing up these
     properties... */
  line-height: inherit;
  font-size: inherit;
  font-family: inherit;
}
table.numbered-lines td.line-numbers span.selected-line/*replacement*/ {
  font-weight: bold;
  color: blue;
  background-color: #d5d5ff;
  border: 1px blue solid;
  border-top-width: 0;
  border-bottom-width: 0;
  padding: 0;
  margin: 0;
}
table.numbered-lines td.line-numbers span.selected-line.start {
  border-top-width: 1px;
  margin-top: -1px/*restore alignment*/;
}
table.numbered-lines td.line-numbers span.selected-line.end {
  border-bottom-width: 1px;
  margin-top: -1px/*restore alignment*/;
}
table.numbered-lines td.line-numbers span.selected-line.start.end {
  margin-top: -2px/*restore alignment*/;
}

.fossil-tooltip {
  text-align: center;
  padding: 0.2em 1em;
  border: 1px solid black;
  border-radius: 0.5em;
  position: absolute;
  display: inline-block;
  z-index: 19/*below default skin's hamburger popup*/;
  box-shadow: -0.15em 0.15em 0.2em rgba(0, 0, 0, 0.75);
  background-color: inherit;
  color: inherit;
}
.fossil-PopupWidget {
  /* This class is ALWAYS set on every fossil.PopupWidget instance, in
     addition to client/app-configured classes. It should not get any
     style - it is only used for DOM element selecting/filtering
     purposes. */
}
.fossil-toast-message {
  /* "toast"-style popup message.
     See fossil.popupwidget:toast() */
  position: absolute;
  display: block;
  z-index: 1001;
  text-align: left;
  padding: 0.15em 0.5em;
  margin: 0;
  font-size: 1em;
  border-width: 1px;
  border-style: solid;
  border-color: rgba( 127, 127, 127, 0.75 );
  border-radius: 0.25em;
  background-color: rgba(20, 20, 20, 1)
  /* problem: if we inherit the color it may either be
     transparent or inherit translucency via the
     skin, leaving it unreadable. Since we set the bg
     color we must also set the fg color. */;
  color: rgba(235, 235, 235, 0.9);
}
.fossil-PopupWidget a,
.fossil-PopupWidget a:visited {
  color: initial;
}
.fossil-toast-message.error,
.fossil-toast-message.warning {
  background: yellow;
}
.fossil-toast-message.error {
  font-weight: bold;
  color: darkred;
  border-color: darkred;
}
.fossil-toast-message.warning {
  color: black;
}

blockquote.file-content {
  /* file content block in the /file page */
  margin: 0 1em;
}

/* Generic sidebar styling inherited by skins that don't make their own
 * arrangements. */
.markdown blockquote, p.blockquote, .sidebar {
  background-color: rgba(0, 0, 0, 0.05);
  border-left: 3px solid #777;
  padding: 0.1em 1em;
}
.sidebar {
  /* Generic form that can be applied to any block element. */
  font-size: 90%;
}
div.sidebar {
  /* Special exception for div-type sidebars, where there is no p
   * wrapper inside to give us the extra padding we want. */
  padding: 1em;
}
div.sidebar:not(.no-label):before {
  content: "Sidebar: ";
  font-weight: bold;
}


/**
   Circular "help" buttons intended to be placed to the right of
   another element and hold text text for it. These typically get
   initialized automatically at page startup via
   fossil.popupwidget.js, and can be manually initialized/created
   using window.fossil.helpButtonlets.setup/create(). All of their
   child content (plain text and/or DOM elements) gets moved out of
   the DOM and shown in a singleton popup when they are clicked. They
   may be SPAN elements if their children are all inline elements,
   otherwise they must be DIVs (block elements) so that nesting of
   block-element content is legal.
*/
.help-buttonlet {
  display: inline-block;
  min-width: 1em;
  max-width: 1em;
  min-height: 1em;
  max-height: 1em;
  cursor: pointer;
  margin: 0 0 0 0.35em;
  background-image: /* white question mark on blue circular background */
    url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' \
viewBox='0 0 15.867574 15.867574'%3e%3ccircle cx='7.9337869' cy='7.9337869' r='7.9337869' \
style='fill:%23f0f0f0;stroke-width:1' /%3e%3ccircle cx='7.9337869' cy='7.9337869' \
r='6.9662519' style='fill:%23404040;stroke-width:1' /%3e%3ccircle cx='7.9337869' \
cy='7.9337869' r='5.9987168' style='fill:%235080d0;stroke-width:1' /%3e%3cpath \
d='M 9.2253789,9.8629486 H 6.5997716 v -0.356384 q 0,-0.5963983 0.2400139,-1.0546067 \
0.240014,-0.4654816 1.0109681,-1.1782504 L 8.316235,6.8518647 Q 8.7308046,6.473661 \
8.9199065,6.1390961 9.1162816,5.8045312 9.1162816,5.4699662 q 0,-0.5091205 -0.3491113,-0.7927734 \
-0.3491111,-0.2909259 -0.9746021,-0.2909259 -0.5891252,0 -1.2728012,0.247287 \
-0.6836761,0.240014 -1.4255375,0.720042 V 3.0698267 q 0.8800513,-0.3054724 1.6073661,-0.4509353 \
0.7273151,-0.145463 1.403718,-0.145463 1.7746486,0 2.7056104,0.727315 0.930965,0.720042 \
0.930965,2.1092135 0,0.7127686 -0.283654,1.2800746 -0.283652,0.5600324 -0.967329,1.2073428 \
L 10.025425,8.2119439 Q 9.530851,8.6628792 9.3781148,8.9392588 9.2253789,9.2083654 \
9.2253789,9.535657 Z M 6.5997716,10.939376 h 2.6256073 v 2.589241 H 6.5997716 Z' \
style='fill:%23f8f8f8;stroke-width:1.35412836' /%3e%3c/svg%3e ");    
  background-repeat: no-repeat;
  background-position: center;
  /* When not using a background image, this additional style works
     reasonably well along with a ::before content of "?": */
  /*border-width: 1px;
  border-style: outset;
  border-radius: 0.5em;
  font-size: 100%;
  font-family: monspace;
  font-weight: 700;
  overflow: hidden;
  background-color: rgba(54, 54, 255,1);
  color: rgb(255, 255, 255);
  text-align: center;
  line-height: 1; */
}
/*.help-buttonlet::before {
  content: "?";
}*/
/**
   We really want to hide all help text via CSS but CSS cannot select
   TEXT nodes. Thus we move them out of the way programmatically
   during initialization.
*/
.help-buttonlet > *{}

/**
   CSS class for PopupWidget which wraps .help-buttonlet content.
   They also have class fossil-tooltip. We need an overly-exact
   selector here to be certain that this class's style overrides
   that of fossil-tooltip.
*/
.fossil-tooltip.help-buttonlet-content {
  cursor: default;
  text-align: left;
  border-style: outset;
}

noscript > .error {
  /* Part of the style_emit_noscript_for_js_page() interface. */
  padding: 1em;
  font-size: 150%;
}

/************************************************************
 pikchr...
 DOM structure:
  <DIV.pikchr-wrapper>
    <DIV.pikchr-svg>
      <SVG.pikchr>...</SVG>
    </DIV.pikchr-svg>
    <DIV.pikchr-src>
     <PRE>pikchr source code</PRE>
     <SPAN class='hidden'><A>link to open pikchr in /pikchrshow</A></SPAN>
     <!-- ^^^ is unhidden and activated by JS code -->
    </DIV.pikchr-src>
  </DIV.pikchr-wrapper>

************************************************************/
div.pikchr-wrapper {/*outer wrapper elem for a pikchr construct*/}
div.pikchr-svg {/*wrapper for SVG.pikchr element*/}
svg.pikchr {/*pikchr SVG*/
  width: 100%/*necessary for SOME SVGs for Chrome!*/;
}

div.pikchr-src {
  /*Wrapper for source code view of a pikchr (see fossil.pikchr.js)*/
  display: flex;
  flex-direction: column;
}
div.pikchr-src > pre {
  /*Source code for a pikchr*/
  box-sizing: border-box;
  text-align: left;
}
div.pikchr-src > span {
  /*Wrapper for a link to open a pikchr in /pikchrshow*/
  margin-top: 0.5em;
  margin-bottom: 0.5em;
  font-size: 85%;
}
div.pikchr-src > span::before {
  content: "[";
}
div.pikchr-src > span::after {
  content: "]";
}
/* The .source-inline class tells the .source class that the
   source view, when enabled, should be "inline" (same position
   as the graphic), else the sources are shifted to the left as
   if they were "plain text". */
div.pikchr-wrapper.center:not(.source),
div.pikchr-wrapper.center.source.source-inline{
  text-align: center;
  /* Reminder for The Future: this impl also works:

      display: grid; place-items: center;

     and does not require setting display:inline-block on the relevant
     child items, but caniuse.com/css-grid suggests that some
     still-seemingly-legitimate browsers don't support grid mode. */
}
div.pikchr-wrapper.center > div.pikchr-svg {
  width: 100%/*necessary for Chrome!*/;
}
div.pikchr-wrapper.center:not(.source) > div.pikchr-src,
div.pikchr-wrapper.center:not(.source) > div.pikchr-svg,
/* ^^^ Centered non-source-view elements */
div.pikchr-wrapper.center.source.source-inline div.pikchr-src,
div.pikchr-wrapper.center.source.source-inline > div.pikchr-svg
/* ^^^ Centered inline-source-view elements */{
  display:inline-block/*allows parent text-align to do the alignment*/;
  /* ^^^^ Browser incompatibility: inline-block causes the centered
     pikchr to shrink to the point of illegiblity in Chrome. The
     closest match on Chrome seems to be using 'unset', which centers
     by virtue of stretching it to the width of the window. Similarly,
     using {display: grid; place-items: center} centers and sizes well
     on FF but Chrome shrinks it in the same way. */
}
div.pikchr-wrapper.indent:not(.source),
div.pikchr-wrapper.indent.source.source-inline{
  margin-left: 4em;
}
div.pikchr-wrapper.float-left:not(.source),
div.pikchr-wrapper.float-left.source.source-inline {
  float: left;
  padding: 4em;
}
div.pikchr-wrapper.float-right:not(.source),
div.pikchr-wrapper.float-right.source.source-inline{
  float: right;
  padding: 4em;
}

/* For pikchr-wrapper.source mode, toggle pre.pikchr-src and
   svg.pikchr visibility... */
div.pikchr-wrapper.source > div.pikchr-src {
  /* Source code  ^^^^^^^ is visible, else it is hidden */
}
div.pikchr-wrapper:not(.source) > div.pikchr-src {
  /* Hide sources when image is being shown. */
  position: absolute !important;
  opacity: 0 !important;
  pointer-events: none !important;
  display: none !important;
}
div.pikchr-wrapper.source > div.pikchr-svg {
  /* Hide image when sources are being shown. */
  position: absolute !important;
  opacity: 0 !important;
  pointer-events: none !important;
  display: none !important;
}


/* An icon element intended for use as a button/menu for
   accessing app-specific settings. */
.settings-icon {
  /* Icon source: https://de.wikipedia.org/wiki/Datei:OOjs_UI_icon_settings.svg
     MIT License. */
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg \
xmlns='http://www.w3.org/2000/svg' width='24' height='24' \
viewBox='0, 0, 24, 24'%3e%3cg id='settings'%3e%3cpath id='gear' \
d='M3 4h3v2h-3zM12 4h9v2h-9zM8 3h2c.552 0 1 .448 1 1v2c0 .552-.448 1-1 1h-2c-.552 \
0-1-.448-1-1v-2c0-.552.448-1 1-1zM3 11h9v2h-9zM18 11h3v2h-3zM14 10h2c.552 0 1 .448 \
1 1v2c0 .552-.448 1-1 1h-2c-.552 0-1-.448-1-1v-2c0-.552.448-1 1-1zM3 18h6v2h-6zM15 \
18h6v2h-6zM11 17h2c.552 0 1 .448 1 1v2c0 .552-.448 1-1 1h-2c-.552 \
0-1-.448-1-1v-2c0-.552.448-1 1-1z'/%3e%3c/g%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: center;
  display: inline-block;
  min-height: 1em;
  max-height: 1em;
  min-width: 1em;
  max-width: 1em;
  margin: 0;
  padding: 0.2em/*needed to avoid image truncation*/;
  border: 1px solid rgba(0,0,0,0.0)/*avoid resize when hover style kicks in*/;
  cursor: pointer;
  border-radius: 0.25em;
}
.settings-icon:hover {
  border: 1px outset rgba(127,127,127,1);
}
body.fossil-dark-style .settings-icon {
  filter: invert(100%);
}

input[type="checkbox"].diff-toggle {
  float: right;
}

body.branch .brlist > table > tbody > tr:hover:not(.selected),
body.branch .brlist > table > tbody > tr.selected {
  background-color: #ffc;
}
body.branch .brlist > table > tbody td:first-child > input {
  cursor: pointer;
}
body.branch .brlist > table > tbody > tr > td:nth-child(1) {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
body.branch .submenu > a.timeline-link {
  display: none;
}
body.branch .submenu > a.timeline-link.selected {
  display: inline;
}

/* Candidate fonts for various forms of monospaced text. Collected here
 * to avoid repeating this long list of fonts. */
code, kbd, pre, samp, tt, var,
    div.markdown ol.footnotes > li.fn-joined > sup.fn-joined,
    table.numbered-lines > tbody > tr,
    tr.diffskip > td.chunkctrl,
    #fossil-status-bar,
    .monospace {
  font-family: "Source Code Pro", "Menlo", "Monaco", "Consolas",
               "Andale Mono", "Ubuntu Mono", "Deja Vu Sans Mono",
               "Letter Gothic", "Letter Gothic Std", "Prestige Elite Std",
               "Courier", "Courier New",
               monospace;
}

div.markdown > ol.footnotes {
  font-size: 90%;
}
div.markdown > ol.footnotes > li {
  margin-bottom: 0.5em;
}
div.markdown ol.footnotes > li.fn-joined > sup.fn-joined {
  color: gray;
}
div.markdown ol.footnotes > li.fn-joined > sup.fn-joined::after {
  content: "(joined from multiple locations) ";
}
div.markdown ol.footnotes > li.fn-misreference {
  margin-top:    0.75em;
  margin-bottom: 0.75em;
}
div.markdown ol.footnotes > li.fn-toodeep > i,
div.markdown ol.footnotes > li.fn-misreference,
div.markdown ol.footnotes > li.fn-unreferenced {
  color: gray;
}
div.markdown ol.footnotes > li.fn-misreference > span {
  color: red;
}
div.markdown ol.footnotes > li.fn-misreference > span::after {
  content: " (use of undefined label).";
}
div.markdown ol.footnotes > li.fn-unreferenced {
  padding-left: 0.5em;
}
div.markdown ol.footnotes > li.fn-unreferenced > code {
  color: red;
}
div.markdown ol.footnotes > li.fn-unreferenced > i::after {
  content: " was defined but is not referenced";
}
div.markdown ol.footnotes > li.fn-toodeep > i::after {
  content: " depth of nesting of inline footnotes exceeded the limit";
}
div.markdown ol.footnotes > li.fn-toodeep > pre,
div.markdown ol.footnotes > li.fn-unreferenced > pre {
  color: gray;
  font-size: 85%;
  padding-left: 0.5em;
  margin-top:  0.25em;
  border-left: 2px solid red;
}
div.markdown ol.footnotes > li.fn-toodeep > pre {
  margin-left: 0.5em;
}
div.markdown > ol.footnotes > li > .fn-backrefs {
  margin-right: 0.5em;
  font-weight: bold;
}
div.markdown > ol.footnotes > li > .fn-backrefs > a,
div.markdown sup.noteref > a {
  padding-left:  2px;
  padding-right: 2px;
}
div.markdown sup.noteref.misref,
div.markdown sup.noteref.misref > a {
  color: red;
  font-size: 90%;
}
div.markdown sup.noteref > a:target,
div.markdown span.notescope:target > sup.noteref > a,
div.markdown span.notescope:hover  > sup.noteref > a,
div.markdown > ol.footnotes > li > .fn-backrefs > a:target {
  background: gold;
}
div.markdown span.notescope:hover,
div.markdown span.notescope:target {
  border-bottom: 2px solid gold;
}

/* Objects in the "desktoponly" class are invisible on mobile */
@media screen and (max-width: 600px) {
  .desktoponly {
    display: none;
  }
}
/* Float sidebars to the right of the main content only if there's room. */
@media screen and (min-width: 600px) {
  .sidebar {
    float: right;
    max-width: 33%;
    margin-left: 1em;
  }
}
/* Objects in the "wideonly" class are invisible only on wide-screen desktops */
@media screen and (max-width: 1200px) {
  .wideonly {
    display: none;
  }
}
Changes to src/delta.c.
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**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module implements the delta compress algorithm.
**
** Though developed specifically for fossil, the code in this file
** is generally appliable and is thus easily separated from the
** is generally applicable and is thus easily separated from the
** fossil source code base.  Nothing in this file depends on anything
** else in fossil.
*/
#include "config.h"
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "delta.h"

/*
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#if INTERFACE
/*
** The "u32" type must be an unsigned 32-bit integer.  Adjust this
*/
typedef unsigned int u32;

/*
** Must be a 16-bit value 
** Must be a 16-bit value
*/
typedef short int s16;
typedef unsigned short int u16;

#endif /* INTERFACE */

/*
** The width of a hash window in bytes.  The algorithm only works if this
** is a power of 2.
*/
#define NHASH 16

/*
** The current state of the rolling hash.
**
** z[] holds the values that have been hashed.  z[] is a circular buffer.
** z[i] is the first entry and z[(i+NHASH-1)%NHASH] is the last entry of 
** z[i] is the first entry and z[(i+NHASH-1)%NHASH] is the last entry of
** the window.
**
** Hash.a is the sum of all elements of hash.z[].  Hash.b is a weighted
** sum.  Hash.b is z[i]*NHASH + z[i+1]*(NHASH-1) + ... + z[i+NHASH-1]*1.
** (Each index for z[] should be module NHASH, of course.  The %NHASH operator
** is omitted in the prior expression for brevity.)
*/
typedef struct hash hash;
struct hash {
  u16 a, b;         /* Hash values */
  u16 i;            /* Start of the hash window */
  char z[NHASH];    /* The values that have been hashed */
};

/*
** Initialize the rolling hash using the first NHASH characters of z[]
*/
static void hash_init(hash *pHash, const char *z){
  u16 a, b, i;
  a = b = 0;
  for(i=0; i<NHASH; i++){
  a = b = z[0];
  for(i=1; i<NHASH; i++){
    a += z[i];
    b += (NHASH-i)*z[i];
    b += a;
    pHash->z[i] = z[i];
  }
  memcpy(pHash->z, z, NHASH);
  pHash->a = a & 0xffff;
  pHash->b = b & 0xffff;
  pHash->i = 0;
}

/*
** Advance the rolling hash by a single character "c"
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/*
** Return a 32-bit hash value
*/
static u32 hash_32bit(hash *pHash){
  return (pHash->a & 0xffff) | (((u32)(pHash->b & 0xffff))<<16);
}

/*
** Compute a hash on NHASH bytes.
**
** This routine is intended to be equivalent to:
**    hash h;
**    hash_init(&h, zInput);
**    return hash_32bit(&h);
*/
static u32 hash_once(const char *z){
  u16 a, b, i;
  a = b = z[0];
  for(i=1; i<NHASH; i++){
    a += z[i];
    b += a;
  }
  return a | (((u32)b)<<16);
}

/*
** Write an base-64 integer into the given buffer.
*/
static void putInt(unsigned int v, char **pz){
  static const char zDigits[] = 
  static const char zDigits[] =
    "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~";
  /*  123456789 123456789 123456789 123456789 123456789 123456789 123 */
  int i, j;
  char zBuf[20];
  if( v==0 ){
    *(*pz)++ = '0';
    return;
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  return v;
}

/*
** Return the number digits in the base-64 representation of a positive integer
*/
static int digit_count(int v){
  unsigned int i, x;
  unsigned int i;
  int x;
  for(i=1, x=64; v>=x; i++, x <<= 6){}
  return i;
}

#ifdef __GNUC__
# define GCC_VERSION (__GNUC__*1000000+__GNUC_MINOR__*1000+__GNUC_PATCHLEVEL__)
#else
# define GCC_VERSION 0
#endif

/*
** Compute a 32-bit checksum on the N-byte buffer.  Return the result.
** Compute a 32-bit big-endian checksum on the N-byte buffer.  If the
** buffer is not a multiple of 4 bytes length, compute the sum that would
** have occurred if the buffer was padded with zeros to the next multiple
** of four bytes.
*/
static unsigned int checksum(const char *zIn, size_t N){
  static const int byteOrderTest = 1;
  const unsigned char *z = (const unsigned char *)zIn;
  const unsigned char *zEnd = (const unsigned char*)&zIn[N&~3];
  unsigned sum = 0;
  assert( (z - (const unsigned char*)0)%4==0 );  /* Four-byte alignment */
  if( 0==*(char*)&byteOrderTest ){
    /* This is a big-endian machine */
    while( z<zEnd ){
      sum += *(unsigned*)z;
      z += 4;
    }
  }else{
    /* A little-endian machine */
#if GCC_VERSION>=4003000
    while( z<zEnd ){
      sum += __builtin_bswap32(*(unsigned*)z);
      z += 4;
    }
#elif defined(_MSC_VER) && _MSC_VER>=1300
    while( z<zEnd ){
      sum += _byteswap_ulong(*(unsigned*)z);
      z += 4;
    }
#else
    unsigned sum0 = 0;
    unsigned sum1 = 0;
    unsigned sum2 = 0;
  while(N >= 16){
    sum += ((unsigned)z[0] + z[4] + z[8] + z[12]) << 24;
    sum += ((unsigned)z[1] + z[5] + z[9] + z[13]) << 16;
    sum += ((unsigned)z[2] + z[6] + z[10]+ z[14]) << 8;
    sum += ((unsigned)z[3] + z[7] + z[11]+ z[15]);
    z += 16;
    N -= 16;
  }
  while(N >= 4){
    sum += (z[0]<<24) | (z[1]<<16) | (z[2]<<8) | z[3];
    z += 4;
    N -= 4;
  }
  switch(N){
    while(N >= 16){
      sum0 += ((unsigned)z[0] + z[4] + z[8] + z[12]);
      sum1 += ((unsigned)z[1] + z[5] + z[9] + z[13]);
      sum2 += ((unsigned)z[2] + z[6] + z[10]+ z[14]);
      sum  += ((unsigned)z[3] + z[7] + z[11]+ z[15]);
      z += 16;
      N -= 16;
    }
    while(N >= 4){
      sum0 += z[0];
      sum1 += z[1];
      sum2 += z[2];
      sum  += z[3];
      z += 4;
      N -= 4;
    }
    sum += (sum2 << 8) + (sum1 << 16) + (sum0 << 24);
#endif
  }
  switch(N&3){
    case 3:   sum += (z[2] << 8);
    case 2:   sum += (z[1] << 16);
    case 1:   sum += (z[0] << 24);
    default:  ;
  }
  return sum;
}

/*
** Create a new delta.
**
** The delta is written into a preallocated buffer, zDelta, which 
** The delta is written into a preallocated buffer, zDelta, which
** should be at least 60 bytes longer than the target file, zOut.
** The delta string will be NUL-terminated, but it might also contain
** embedded NUL characters if either the zSrc or zOut files are
** binary.  This function returns the length of the delta string
** in bytes, excluding the final NUL terminator character.
**
** Output Format:
**
** The delta begins with a base64 number followed by a newline.  This
** number is the number of bytes in the TARGET file.  Thus, given a
** delta file z, a program can compute the size of the output file
** simply by reading the first line and decoding the base-64 number
** found there.  The delta_output_size() routine does exactly this.
**
** After the initial size number, the delta consists of a series of
** literal text segments and commands to copy from the SOURCE file.  
** literal text segments and commands to copy from the SOURCE file.
** A copy command looks like this:
**
**     NNN@MMM,
**
** where NNN is the number of bytes to be copied and MMM is the offset
** into the source file of the first byte (both base-64).   If NNN is 0
** it means copy the rest of the input file.  Literal text is like this:
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** Next we begin scanning the target file using a sliding 16-byte
** window.  The hash of the 16-byte window in the target is used to
** search for a matching section in the source file.  When a match
** is found, a copy command is added to the delta.  An effort is
** made to extend the matching section to regions that come before
** and after the 16-byte hash window.  A copy command is only issued
** if the result would use less space that just quoting the text
** literally. Literal text is added to the delta for sections that 
** literally. Literal text is added to the delta for sections that
** do not match or which can not be encoded efficiently using copy
** commands.
*/
int delta_create(
  const char *zSrc,      /* The source or pattern file */
  unsigned int lenSrc,   /* Length of the source file */
  const char *zOut,      /* The target file */
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    return zDelta - zOrigDelta;
  }

  /* Compute the hash table used to locate matching sections in the
  ** source file.
  */
  nHash = lenSrc/NHASH;
  collide = malloc( nHash*2*sizeof(int) );
  if( collide==0 ) return -1;
  collide = fossil_malloc( nHash*2*sizeof(int) );
  memset(collide, -1, nHash*2*sizeof(int));
  landmark = &collide[nHash];
  memset(landmark, -1, nHash*sizeof(int));
  memset(collide, -1, nHash*sizeof(int));
  for(i=0; i<lenSrc-NHASH; i+=NHASH){
    int hv;
  for(i=0; i<(int)lenSrc-NHASH; i+=NHASH){
    int hv = hash_once(&zSrc[i]) % nHash;
    hash_init(&h, &zSrc[i]);
    hv = hash_32bit(&h) % nHash;
    collide[i/NHASH] = landmark[hv];
    landmark[hv] = i/NHASH;
  }

  /* Begin scanning the target file and generating copy commands and
  ** literal sections of the delta.
  */
  base = 0;    /* We have already generated everything before zOut[base] */
  while( base+NHASH<lenOut ){
  while( base+NHASH<(int)lenOut ){
    int iSrc, iBlock;
    unsigned int bestCnt, bestOfst=0, bestLitsz=0;
    hash_init(&h, &zOut[base]);
    i = 0;     /* Trying to match a landmark against zOut[base+i] */
    bestCnt = 0;
    while( 1 ){
      int hv;
      int limit = 250;

      hv = hash_32bit(&h) % nHash;
      DEBUG2( printf("LOOKING: %4d [%s]\n", base+i, print16(&zOut[base+i])); )
      iBlock = landmark[hv];
      while( iBlock>=0 && (limit--)>0 ){
        /*
        ** The hash window has identified a potential match against 
        ** The hash window has identified a potential match against
        ** landmark block iBlock.  But we need to investigate further.
        ** 
        **
        ** Look for a region in zOut that matches zSrc. Anchor the search
        ** at zSrc[iSrc] and zOut[base+i].  Do not include anything prior to
        ** zOut[base] or after zOut[outLen] nor anything after zSrc[srcLen].
        **
        ** Set cnt equal to the length of the match and set ofst so that
        ** zSrc[ofst] is the first element of the match.  litsz is the number
        ** of characters between zOut[base] and the beginning of the match.
        ** sz will be the overhead (in bytes) needed to encode the copy
        ** command.  Only generate copy command if the overhead of the
        ** copy command is less than the amount of literal text to be copied.
        */
        int cnt, ofst, litsz;
        int j, k, x, y;
        int sz;
        int limitX;

        /* Beginning at iSrc, match forwards as far as we can.  j counts
        ** the number of characters that match */
        iSrc = iBlock*NHASH;
        for(j=0, x=iSrc, y=base+i; x<lenSrc && y<lenOut; j++, x++, y++){
        y = base+i;
        limitX = ( lenSrc-iSrc <= lenOut-y ) ? lenSrc : iSrc + lenOut - y;
        for(x=iSrc; x<limitX; x++, y++){
          if( zSrc[x]!=zOut[y] ) break;
        }
        j--;
        j = x - iSrc - 1;

        /* Beginning at iSrc-1, match backwards as far as we can.  k counts
        ** the number of characters that match */
        for(k=1; k<iSrc && k<=i; k++){
          if( zSrc[iSrc-k]!=zOut[base+i-k] ) break;
        }
        k--;

        /* Compute the offset and size of the matching region */
        ofst = iSrc-k;
        cnt = j+k+1;
        litsz = i-k;  /* Number of bytes of literal text before the copy */
        DEBUG2( printf("MATCH %d bytes at %d: [%s] litsz=%d\n",
                        cnt, ofst, print16(&zSrc[ofst]), litsz); )
        /* sz will hold the number of bytes needed to encode the "insert"
        ** command and the copy command, not counting the "insert" text */
        sz = digit_count(i-k)+digit_count(cnt)+digit_count(ofst)+3;
        if( cnt>=sz && cnt>bestCnt ){
        if( cnt>=sz && cnt>(int)bestCnt ){
          /* Remember this match only if it is the best so far and it
          ** does not increase the file size */
          bestCnt = cnt;
          bestOfst = iSrc-k;
          bestLitsz = litsz;
          DEBUG2( printf("... BEST SO FAR\n"); )
        }
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        }
        base += bestCnt;
        putInt(bestCnt, &zDelta);
        *(zDelta++) = '@';
        putInt(bestOfst, &zDelta);
        DEBUG2( printf("copy %d bytes from %d\n", bestCnt, bestOfst); )
        *(zDelta++) = ',';
        if( bestOfst + bestCnt -1 > lastRead ){
        if( (int)(bestOfst + bestCnt -1) > lastRead ){
          lastRead = bestOfst + bestCnt - 1;
          DEBUG2( printf("lastRead becomes %d\n", lastRead); )
        }
        bestCnt = 0;
        break;
      }

      /* If we reach this point, it means no match is found so far */
      if( base+i+NHASH>lenOut ){
      if( base+i+NHASH>=(int)lenOut ){
        /* We have reached the end of the file and have not found any
        ** matches.  Do an "insert" for everything that does not match */
        putInt(lenOut-base, &zDelta);
        *(zDelta++) = ':';
        memcpy(zDelta, &zOut[base], lenOut-base);
        zDelta += lenOut-base;
        base = lenOut;
        break;
      }

      /* Advance the hash by one character.  Keep looking for a match */
      hash_next(&h, zOut[base+i+NHASH]);
      i++;
    }
  }
  /* Output a final "insert" record to get all the text at the end of
  ** the file that does not match anything in the source file.
  */
  if( base<lenOut ){
  if( base<(int)lenOut ){
    putInt(lenOut-base, &zDelta);
    *(zDelta++) = ':';
    memcpy(zDelta, &zOut[base], lenOut-base);
    zDelta += lenOut-base;
  }
  /* Output the final checksum record. */
  putInt(checksum(zOut, lenOut), &zDelta);
  *(zDelta++) = ';';
  free(collide);
  return zDelta - zOrigDelta; 
  fossil_free(collide);
  return zDelta - zOrigDelta;
}

/*
** Return the size (in bytes) of the output from applying
** a delta. 
** a delta.
**
** This routine is provided so that an procedure that is able
** to call delta_apply() can learn how much space is required
** for the output and hence allocate nor more space that is really
** needed.
*/
int delta_output_size(const char *zDelta, int lenDelta){
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  int lenSrc,            /* Length of the source file */
  const char *zDelta,    /* Delta to apply to the pattern */
  int lenDelta,          /* Length of the delta */
  char *zOut             /* Write the output into this preallocated buffer */
){
  unsigned int limit;
  unsigned int total = 0;
#ifdef FOSSIL_ENABLE_DELTA_CKSUM_TEST
  char *zOrigOut = zOut;
#endif

  limit = getInt(&zDelta, &lenDelta);
  if( *zDelta!='\n' ){
    /* ERROR: size integer not terminated by "\n" */
    return -1;
  }
  zDelta++; lenDelta--;
  while( *zDelta && lenDelta>0 ){
    unsigned int cnt, ofst;
    cnt = getInt(&zDelta, &lenDelta);
    switch( zDelta[0] ){
      case '@': {
        zDelta++; lenDelta--;
        ofst = getInt(&zDelta, &lenDelta);
        if( zDelta[0]!=',' ){
        if( lenDelta>0 && zDelta[0]!=',' ){
          /* ERROR: copy command not terminated by ',' */
          return -1;
        }
        zDelta++; lenDelta--;
        DEBUG1( printf("COPY %d from %d\n", cnt, ofst); )
        total += cnt;
        if( total>limit ){
          /* ERROR: copy exceeds output file size */
          return -1;
        }
        if( ofst+cnt > lenSrc ){
        if( (int)(ofst+cnt) > lenSrc ){
          /* ERROR: copy extends past end of input */
          return -1;
        }
        memcpy(zOut, &zSrc[ofst], cnt);
        zOut += cnt;
        break;
      }
      case ':': {
        zDelta++; lenDelta--;
        total += cnt;
        if( total>limit ){
          /* ERROR:  insert command gives an output larger than predicted */
          return -1;
        }
        DEBUG1( printf("INSERT %d\n", cnt); )
        if( cnt>lenDelta ){
        if( (int)cnt>lenDelta ){
          /* ERROR: insert count exceeds size of delta */
          return -1;
        }
        memcpy(zOut, zDelta, cnt);
        zOut += cnt;
        zDelta += cnt;
        lenDelta -= cnt;
        break;
      }
      case ';': {
        zDelta++; lenDelta--;
        zOut[0] = 0;
#ifdef FOSSIL_ENABLE_DELTA_CKSUM_TEST
        if( cnt!=checksum(zOrigOut, total) ){
          /* ERROR:  bad checksum */
          return -1;
        }
#endif
        if( total!=limit ){
          /* ERROR: generated size does not match predicted size */
          return -1;
        }
        return total;
      }
      default: {
        /* ERROR: unknown delta operator */
        return -1;
      }
    }
  }
  /* ERROR: unterminated delta */
  return -1;
}

/*
** Analyze a delta.  Figure out the total number of bytes copied from
** source to target, and the total number of bytes inserted by the delta,
** and return both numbers.
*/
int delta_analyze(
  const char *zDelta,    /* Delta to apply to the pattern */
  int lenDelta,          /* Length of the delta */
  int *pnCopy,           /* OUT: Number of bytes copied */
  int *pnInsert          /* OUT: Number of bytes inserted */
){
  unsigned int nInsert = 0;
  unsigned int nCopy = 0;

  (void)getInt(&zDelta, &lenDelta);
  if( *zDelta!='\n' ){
    /* ERROR: size integer not terminated by "\n" */
    return -1;
  }
  zDelta++; lenDelta--;
  while( *zDelta && lenDelta>0 ){
    unsigned int cnt;
    cnt = getInt(&zDelta, &lenDelta);
    switch( zDelta[0] ){
      case '@': {
        zDelta++; lenDelta--;
        (void)getInt(&zDelta, &lenDelta);
        if( lenDelta>0 && zDelta[0]!=',' ){
          /* ERROR: copy command not terminated by ',' */
          return -1;
        }
        zDelta++; lenDelta--;
        nCopy += cnt;
        break;
      }
      case ':': {
        zDelta++; lenDelta--;
        nInsert += cnt;
        if( (int)cnt>lenDelta ){
          /* ERROR: insert count exceeds size of delta */
          return -1;
        }
        zDelta += cnt;
        lenDelta -= cnt;
        break;
      }
      case ';': {
        *pnCopy = nCopy;
        *pnInsert = nInsert;
        return 0;
      }
      default: {
        /* ERROR: unknown delta operator */
        return -1;
      }
    }
  }
  /* ERROR: unterminated delta */
  return -1;
}
Changes to src/deltacmd.c.
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**
*******************************************************************************
**
** This module implements the interface to the delta generator.
*/
#include "config.h"
#include "deltacmd.h"
 

/*
** Create a delta that describes the change from pOriginal to pTarget
** and put that delta in pDelta.  The pDelta blob is assumed to be
** uninitialized.
*/
int blob_delta_create(Blob *pOriginal, Blob *pTarget, Blob *pDelta){
  const char *zOrig, *zTarg;
  int lenOrig, lenTarg;
  int len;
  char *zRes;
  blob_zero(pDelta);
  zOrig = blob_buffer(pOriginal);
  zOrig = blob_materialize(pOriginal);
  lenOrig = blob_size(pOriginal);
  zTarg = blob_buffer(pTarget);
  zTarg = blob_materialize(pTarget);
  lenTarg = blob_size(pTarget);
  blob_resize(pDelta, lenTarg+16);
  zRes = blob_buffer(pDelta);
  zRes = blob_materialize(pDelta);
  len = delta_create(zOrig, lenOrig, zTarg, lenTarg, zRes);
  blob_resize(pDelta, len);
  return 0;
}

/*
** COMMAND:  test-delta-create
** COMMAND: test-delta-create
**
** Usage: %fossil test-delta-create FILE1 FILE2 DELTA
**
** Given two input files, create and output a delta that carries
** the first file into the second.
** Create and output a delta that carries FILE1 into FILE2.
** Store the result in DELTA.
*/
void delta_create_cmd(void){
  Blob orig, target, delta;
  if( g.argc!=5 ){
    fprintf(stderr,"Usage: %s %s ORIGIN TARGET DELTA\n", g.argv[0], g.argv[1]);
    usage("ORIGIN TARGET DELTA");
    exit(1);
  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
  if( blob_read_from_file(&orig, g.argv[2], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[2]);
    exit(1);
  }
  if( blob_read_from_file(&target, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);
    exit(1);
  if( blob_read_from_file(&target, g.argv[3], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[3]);
  }
  blob_delta_create(&orig, &target, &delta);
  if( blob_write_to_file(&delta, g.argv[4])<(int)blob_size(&delta) ){
    fossil_fatal("cannot write %s", g.argv[4]);
  }
  blob_reset(&orig);
  blob_reset(&target);
  blob_reset(&delta);
}

/*
** COMMAND: test-delta-analyze
**
** Usage: %fossil test-delta-analyze FILE1 FILE2
**
** Create and a delta that carries FILE1 into FILE2.  Print the
** number bytes copied and the number of bytes inserted.
*/
void delta_analyze_cmd(void){
  Blob orig, target, delta;
  int nCopy = 0;
  int nInsert = 0;
  int sz1, sz2, sz3;
  if( g.argc!=4 ){
    usage("ORIGIN TARGET");
  }
  if( blob_read_from_file(&orig, g.argv[2], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[2]);
  }
  if( blob_read_from_file(&target, g.argv[3], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[3]);
  }
  blob_delta_create(&orig, &target, &delta);
  delta_analyze(blob_buffer(&delta), blob_size(&delta), &nCopy, &nInsert);
  sz1 = blob_size(&orig);
  sz2 = blob_size(&target);
  if( blob_write_to_file(&delta, g.argv[4])<blob_size(&delta) ){
  sz3 = blob_size(&delta);
    fprintf(stderr,"cannot write %s\n", g.argv[4]);
    exit(1);
  }
  blob_reset(&orig);
  blob_reset(&target);
  blob_reset(&delta);
  fossil_print("original size:  %8d\n", sz1);
  fossil_print("bytes copied:   %8d (%.2f%% of target)\n",
               nCopy, (100.0*nCopy)/sz2);
  fossil_print("bytes inserted: %8d (%.2f%% of target)\n",
               nInsert, (100.0*nInsert)/sz2);
  fossil_print("final size:     %8d\n", sz2);
  fossil_print("delta size:     %8d\n", sz3);
}

/*
** Apply the delta in pDelta to the original file pOriginal to generate
** the target file pTarget.  The pTarget blob is initialized by this
** routine.
**
** It works ok for pTarget and pOriginal to be the same blob.
**
** Return the length of the target.  Return -1 if there is an error.
*/
int blob_delta_apply(Blob *pOriginal, Blob *pDelta, Blob *pTarget){
  int len, n;
  Blob out;

  n = delta_output_size(blob_buffer(pDelta), blob_size(pDelta));
  blob_zero(&out);
  if( n<0 ) return -1;
  blob_resize(&out, n);
  len = delta_apply(
     blob_buffer(pOriginal), blob_size(pOriginal),
     blob_buffer(pDelta), blob_size(pDelta),
     blob_buffer(&out));
  if( len<0 ){
    blob_reset(&out);
  }else if( len!=n ){
    blob_resize(&out, len);
  }
  if( pTarget==pOriginal ){
    blob_reset(pOriginal);
  }
  *pTarget = out;
  return len;
}

/*
** COMMAND:  test-delta-apply
** COMMAND: test-delta-apply
**
** Given an input files and a delta, apply the delta to the input file
** and write the result.
** Usage: %fossil test-delta-apply FILE1 DELTA FILE2
**
** Apply DELTA to FILE1 and output the result in FILE2.
*/
void delta_apply_cmd(void){
  Blob orig, target, delta;
  if( g.argc!=5 ){
    fprintf(stderr,"Usage: %s %s ORIGIN DELTA TARGET\n", g.argv[0], g.argv[1]);
    usage("ORIGIN DELTA TARGET");
    exit(1);
  }
  if( blob_read_from_file(&orig, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
  if( blob_read_from_file(&orig, g.argv[2], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[2]);
    exit(1);
  }
  if( blob_read_from_file(&delta, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);
  if( blob_read_from_file(&delta, g.argv[3], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[3]);
    exit(1);
  }
  blob_init(&target, 0, 0);
  blob_delta_apply(&orig, &delta, &target);
  if( blob_write_to_file(&target, g.argv[4])<blob_size(&target) ){
    fprintf(stderr,"cannot write %s\n", g.argv[4]);
  if( blob_write_to_file(&target, g.argv[4])<(int)blob_size(&target) ){
    fossil_fatal("cannot write %s", g.argv[4]);
    exit(1);
  }
  blob_reset(&orig);
  blob_reset(&target);
  blob_reset(&delta);
}


/*
** COMMAND:  test-delta
** COMMAND: test-delta
**
** Usage: %fossil test-delta FILE1 FILE2
**
** Read two files named on the command-line.  Create and apply deltas
** going in both directions.  Verify that the original files are
** correctly recovered.
*/
void cmd_test_delta(void){
  Blob f1, f2;     /* Original file content */
  Blob d12, d21;   /* Deltas from f1->f2 and f2->f1 */
  Blob a1, a2;     /* Recovered file content */
  if( g.argc!=4 ) usage("FILE1 FILE2");
  blob_read_from_file(&f1, g.argv[2]);
  blob_read_from_file(&f2, g.argv[3]);
  blob_read_from_file(&f1, g.argv[2], ExtFILE);
  blob_read_from_file(&f2, g.argv[3], ExtFILE);
  blob_delta_create(&f1, &f2, &d12);
  blob_delta_create(&f2, &f1, &d21);
  blob_delta_apply(&f1, &d12, &a2);
  blob_delta_apply(&f2, &d21, &a1);
  if( blob_compare(&f1,&a1) || blob_compare(&f2, &a2) ){
    fossil_panic("delta test failed");
    fossil_fatal("delta test failed");
  }
  printf("ok\n");
  fossil_print("ok\n");
}
Added src/deltafunc.c.


































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2019 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module implements SQL interfaces to the delta logic.  The code
** here is adapted from the ext/misc/fossildelta.c extension in SQLite.
*/
#include "config.h"
#include "deltafunc.h"

/*
** SQL functions:  delta_create(X,Y)
**
** Return a delta that will transform X into Y.
*/
static void deltaCreateFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *aOrig; int nOrig;  /* old blob */
  const char *aNew;  int nNew;   /* new blob */
  char *aOut;        int nOut;   /* output delta */

  assert( argc==2 );
  if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return;
  if( sqlite3_value_type(argv[1])==SQLITE_NULL ) return;
  nOrig = sqlite3_value_bytes(argv[0]);
  aOrig = (const char*)sqlite3_value_blob(argv[0]);
  nNew = sqlite3_value_bytes(argv[1]);
  aNew = (const char*)sqlite3_value_blob(argv[1]);
  aOut = sqlite3_malloc64(nNew+70);
  if( aOut==0 ){
    sqlite3_result_error_nomem(context);
  }else{
    nOut = delta_create(aOrig, nOrig, aNew, nNew, aOut);
    if( nOut<0 ){
      sqlite3_free(aOut);
      sqlite3_result_error(context, "cannot create fossil delta", -1);
    }else{
      sqlite3_result_blob(context, aOut, nOut, sqlite3_free);
    }
  }
}

/*
** SQL functions:  delta_apply(X,D)
**
** Return the result of applying delta D to input X.
*/
static void deltaApplyFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *aOrig;   int nOrig;        /* The X input */
  const char *aDelta;  int nDelta;       /* The input delta (D) */
  char *aOut;          int nOut, nOut2;  /* The output */

  assert( argc==2 );
  if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return;
  if( sqlite3_value_type(argv[1])==SQLITE_NULL ) return;
  nOrig = sqlite3_value_bytes(argv[0]);
  aOrig = (const char*)sqlite3_value_blob(argv[0]);
  nDelta = sqlite3_value_bytes(argv[1]);
  aDelta = (const char*)sqlite3_value_blob(argv[1]);

  /* Figure out the size of the output */
  nOut = delta_output_size(aDelta, nDelta);
  if( nOut<0 ){
    sqlite3_result_error(context, "corrupt fossil delta", -1);
    return;
  }
  aOut = sqlite3_malloc64((sqlite3_int64)nOut+1);
  if( aOut==0 ){
    sqlite3_result_error_nomem(context);
  }else{
    nOut2 = delta_apply(aOrig, nOrig, aDelta, nDelta, aOut);
    if( nOut2!=nOut ){
      sqlite3_free(aOut);
      sqlite3_result_error(context, "corrupt fossil delta", -1);
    }else{
      sqlite3_result_blob(context, aOut, nOut, sqlite3_free);
    }
  }
}


/*
** SQL functions:  delta_output_size(D)
**
** Return the size of the output that results from applying delta D.
*/
static void deltaOutputSizeFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *aDelta;  int nDelta;       /* The input delta (D) */
  int nOut;                              /* Size of output */
  assert( argc==1 );
  if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return;
  nDelta = sqlite3_value_bytes(argv[0]);
  aDelta = (const char*)sqlite3_value_blob(argv[0]);

  /* Figure out the size of the output */
  nOut = delta_output_size(aDelta, nDelta);
  if( nOut<0 ){
    sqlite3_result_error(context, "corrupt fossil delta", -1);
    return;
  }else{
    sqlite3_result_int(context, nOut);
  }
}

/*****************************************************************************
** Table-valued SQL function:   delta_parse(DELTA)
**
** Schema:
**
**     CREATE TABLE delta_parse(
**       op TEXT,
**       a1 INT,
**       a2 ANY,
**       delta HIDDEN BLOB
**     );
**
** Given an input DELTA, this function parses the delta and returns
** rows for each entry in the delta.  The op column has one of the
** values SIZE, COPY, INSERT, CHECKSUM, ERROR.
**
** Assuming no errors, the first row has op='SIZE'.  a1 is the size of
** the output in bytes and a2 is NULL.
**
** After the initial SIZE row, there are zero or more 'COPY' and/or 'INSERT'
** rows.  A COPY row means content is copied from the source into the
** output.  Column a1 is the number of bytes to copy and a2 is the offset
** into source from which to begin copying.  An INSERT row means to
** insert text into the output stream.  Column a1 is the number of bytes
** to insert and column is a BLOB that contains the text to be inserted.
**
** The last row of a well-formed delta will have an op value of 'CHECKSUM'.
** The a1 column will be the value of the checksum and a2 will be NULL.
**
** If the input delta is not well-formed, then a row with an op value
** of 'ERROR' is returned.  The a1 value of the ERROR row is the offset
** into the delta where the error was encountered and a2 is NULL.
*/
typedef struct deltaparsevtab_vtab deltaparsevtab_vtab;
typedef struct deltaparsevtab_cursor deltaparsevtab_cursor;
struct deltaparsevtab_vtab {
  sqlite3_vtab base;  /* Base class - must be first */
  /* No additional information needed */
};
struct deltaparsevtab_cursor {
  sqlite3_vtab_cursor base;  /* Base class - must be first */
  char *aDelta;              /* The delta being parsed */
  int nDelta;                /* Number of bytes in the delta */
  int iCursor;               /* Current cursor location */
  int eOp;                   /* Name of current operator */
  unsigned int a1, a2;       /* Arguments to current operator */
  int iNext;                 /* Next cursor value */
};

/* Operator names:
*/
static const char *const azOp[] = {
  "SIZE", "COPY", "INSERT", "CHECKSUM", "ERROR", "EOF"
};
#define DELTAPARSE_OP_SIZE         0
#define DELTAPARSE_OP_COPY         1
#define DELTAPARSE_OP_INSERT       2
#define DELTAPARSE_OP_CHECKSUM     3
#define DELTAPARSE_OP_ERROR        4
#define DELTAPARSE_OP_EOF          5

/*
** Read bytes from *pz and convert them into a positive integer.  When
** finished, leave *pz pointing to the first character past the end of
** the integer.  The *pLen parameter holds the length of the string
** in *pz and is decremented once for each character in the integer.
*/
static unsigned int deltaGetInt(const char **pz, int *pLen){
  static const signed char zValue[] = {
    -1, -1, -1, -1, -1, -1, -1, -1,   -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,   -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1,   -1, -1, -1, -1, -1, -1, -1, -1,
     0,  1,  2,  3,  4,  5,  6,  7,    8,  9, -1, -1, -1, -1, -1, -1,
    -1, 10, 11, 12, 13, 14, 15, 16,   17, 18, 19, 20, 21, 22, 23, 24,
    25, 26, 27, 28, 29, 30, 31, 32,   33, 34, 35, -1, -1, -1, -1, 36,
    -1, 37, 38, 39, 40, 41, 42, 43,   44, 45, 46, 47, 48, 49, 50, 51,
    52, 53, 54, 55, 56, 57, 58, 59,   60, 61, 62, -1, -1, -1, 63, -1,
  };
  unsigned int v = 0;
  int c;
  unsigned char *z = (unsigned char*)*pz;
  unsigned char *zStart = z;
  while( (c = zValue[0x7f&*(z++)])>=0 ){
     v = (v<<6) + c;
  }
  z--;
  *pLen -= z - zStart;
  *pz = (char*)z;
  return v;
}

/*
** The deltaparsevtabConnect() method is invoked to create a new
** deltaparse virtual table.
**
** Think of this routine as the constructor for deltaparsevtab_vtab objects.
**
** All this routine needs to do is:
**
**    (1) Allocate the deltaparsevtab_vtab object and initialize all fields.
**
**    (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the
**        result set of queries against the virtual table will look like.
*/
static int deltaparsevtabConnect(
  sqlite3 *db,
  void *pAux,
  int argc, const char *const*argv,
  sqlite3_vtab **ppVtab,
  char **pzErr
){
  deltaparsevtab_vtab *pNew;
  int rc;

  rc = sqlite3_declare_vtab(db,
           "CREATE TABLE x(op,a1,a2,delta HIDDEN)"
       );
  /* For convenience, define symbolic names for the index to each column. */
#define DELTAPARSEVTAB_OP     0
#define DELTAPARSEVTAB_A1     1
#define DELTAPARSEVTAB_A2     2
#define DELTAPARSEVTAB_DELTA  3
  if( rc==SQLITE_OK ){
    pNew = sqlite3_malloc64( sizeof(*pNew) );
    *ppVtab = (sqlite3_vtab*)pNew;
    if( pNew==0 ) return SQLITE_NOMEM;
    memset(pNew, 0, sizeof(*pNew));
  }
  return rc;
}

/*
** This method is the destructor for deltaparsevtab_vtab objects.
*/
static int deltaparsevtabDisconnect(sqlite3_vtab *pVtab){
  deltaparsevtab_vtab *p = (deltaparsevtab_vtab*)pVtab;
  sqlite3_free(p);
  return SQLITE_OK;
}

/*
** Constructor for a new deltaparsevtab_cursor object.
*/
static int deltaparsevtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
  deltaparsevtab_cursor *pCur;
  pCur = sqlite3_malloc( sizeof(*pCur) );
  if( pCur==0 ) return SQLITE_NOMEM;
  memset(pCur, 0, sizeof(*pCur));
  *ppCursor = &pCur->base;
  return SQLITE_OK;
}

/*
** Destructor for a deltaparsevtab_cursor.
*/
static int deltaparsevtabClose(sqlite3_vtab_cursor *cur){
  deltaparsevtab_cursor *pCur = (deltaparsevtab_cursor*)cur;
  sqlite3_free(pCur->aDelta);
  sqlite3_free(pCur);
  return SQLITE_OK;
}


/*
** Advance a deltaparsevtab_cursor to its next row of output.
*/
static int deltaparsevtabNext(sqlite3_vtab_cursor *cur){
  deltaparsevtab_cursor *pCur = (deltaparsevtab_cursor*)cur;
  const char *z;
  int i = 0;

  pCur->iCursor = pCur->iNext;
  z = pCur->aDelta + pCur->iCursor;
  pCur->a1 = deltaGetInt(&z, &i);
  switch( z[0] ){
    case '@': {
      z++;
      pCur->a2 = deltaGetInt(&z, &i);
      pCur->eOp = DELTAPARSE_OP_COPY;
      pCur->iNext = (int)(&z[1] - pCur->aDelta);
      break;
    }
    case ':': {
      z++;
      pCur->a2 = (unsigned int)(z - pCur->aDelta);
      pCur->eOp = DELTAPARSE_OP_INSERT;
      pCur->iNext = (int)(&z[pCur->a1] - pCur->aDelta);
      break;
    }
    case ';': {
      pCur->eOp = DELTAPARSE_OP_CHECKSUM;
      pCur->iNext = pCur->nDelta;
      break;
    }
    default: {
      if( pCur->iNext==pCur->nDelta ){
        pCur->eOp = DELTAPARSE_OP_EOF;
      }else{
        pCur->eOp = DELTAPARSE_OP_ERROR;
        pCur->iNext = pCur->nDelta;
      }
      break;
    }
  }
  return SQLITE_OK;
}

/*
** Return values of columns for the row at which the deltaparsevtab_cursor
** is currently pointing.
*/
static int deltaparsevtabColumn(
  sqlite3_vtab_cursor *cur,   /* The cursor */
  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
  int i                       /* Which column to return */
){
  deltaparsevtab_cursor *pCur = (deltaparsevtab_cursor*)cur;
  switch( i ){
    case DELTAPARSEVTAB_OP: {
      sqlite3_result_text(ctx, azOp[pCur->eOp], -1, SQLITE_STATIC);
      break;
    }
    case DELTAPARSEVTAB_A1: {
      sqlite3_result_int(ctx, pCur->a1);
      break;
    }
    case DELTAPARSEVTAB_A2: {
      if( pCur->eOp==DELTAPARSE_OP_COPY ){
        sqlite3_result_int(ctx, pCur->a2);
      }else if( pCur->eOp==DELTAPARSE_OP_INSERT ){
        sqlite3_result_blob(ctx, pCur->aDelta+pCur->a2, pCur->a1,
                            SQLITE_TRANSIENT);
      }
      break;
    }
    case DELTAPARSEVTAB_DELTA: {
      sqlite3_result_blob(ctx, pCur->aDelta, pCur->nDelta, SQLITE_TRANSIENT);
      break;
    }
  }
  return SQLITE_OK;
}

/*
** Return the rowid for the current row.  In this implementation, the
** rowid is the same as the output value.
*/
static int deltaparsevtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
  deltaparsevtab_cursor *pCur = (deltaparsevtab_cursor*)cur;
  *pRowid = pCur->iCursor;
  return SQLITE_OK;
}

/*
** Return TRUE if the cursor has been moved off of the last
** row of output.
*/
static int deltaparsevtabEof(sqlite3_vtab_cursor *cur){
  deltaparsevtab_cursor *pCur = (deltaparsevtab_cursor*)cur;
  return pCur->eOp==DELTAPARSE_OP_EOF;
}

/*
** This method is called to "rewind" the deltaparsevtab_cursor object back
** to the first row of output.  This method is always called at least
** once prior to any call to deltaparsevtabColumn() or deltaparsevtabRowid() or
** deltaparsevtabEof().
*/
static int deltaparsevtabFilter(
  sqlite3_vtab_cursor *pVtabCursor,
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  deltaparsevtab_cursor *pCur = (deltaparsevtab_cursor *)pVtabCursor;
  const char *a;
  int i = 0;
  pCur->eOp = DELTAPARSE_OP_ERROR;
  if( idxNum!=1 ){
    return SQLITE_OK;
  }
  pCur->nDelta = sqlite3_value_bytes(argv[0]);
  a = (const char*)sqlite3_value_blob(argv[0]);
  if( pCur->nDelta==0 || a==0 ){
    return SQLITE_OK;
  }
  pCur->aDelta = sqlite3_malloc64( pCur->nDelta+1 );
  if( pCur->aDelta==0 ){
    pCur->nDelta = 0;
    return SQLITE_NOMEM;
  }
  memcpy(pCur->aDelta, a, pCur->nDelta);
  pCur->aDelta[pCur->nDelta] = 0;
  a = pCur->aDelta;
  pCur->eOp = DELTAPARSE_OP_SIZE;
  pCur->a1 = deltaGetInt(&a, &i);
  if( a[0]!='\n' ){
    pCur->eOp = DELTAPARSE_OP_ERROR;
    pCur->a1 = pCur->a2 = 0;
    pCur->iNext = pCur->nDelta;
    return SQLITE_OK;
  }
  a++;
  pCur->iNext = (unsigned int)(a - pCur->aDelta);
  return SQLITE_OK;
}

/*
** SQLite will invoke this method one or more times while planning a query
** that uses the virtual table.  This routine needs to create
** a query plan for each invocation and compute an estimated cost for that
** plan.
*/
static int deltaparsevtabBestIndex(
  sqlite3_vtab *tab,
  sqlite3_index_info *pIdxInfo
){
  int i;
  for(i=0; i<pIdxInfo->nConstraint; i++){
    if( pIdxInfo->aConstraint[i].iColumn != DELTAPARSEVTAB_DELTA ) continue;
    if( pIdxInfo->aConstraint[i].usable==0 ) continue;
    if( pIdxInfo->aConstraint[i].op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue;
    pIdxInfo->aConstraintUsage[i].argvIndex = 1;
    pIdxInfo->aConstraintUsage[i].omit = 1;
    pIdxInfo->estimatedCost = (double)1;
    pIdxInfo->estimatedRows = 10;
    pIdxInfo->idxNum = 1;
    return SQLITE_OK;
  }
  pIdxInfo->idxNum = 0;
  pIdxInfo->estimatedCost = (double)0x7fffffff;
  pIdxInfo->estimatedRows = 0x7fffffff;
  return SQLITE_CONSTRAINT;
}

/*
** This following structure defines all the methods for the
** virtual table.
*/
static sqlite3_module deltaparsevtabModule = {
  /* iVersion    */ 0,
  /* xCreate     */ 0,
  /* xConnect    */ deltaparsevtabConnect,
  /* xBestIndex  */ deltaparsevtabBestIndex,
  /* xDisconnect */ deltaparsevtabDisconnect,
  /* xDestroy    */ 0,
  /* xOpen       */ deltaparsevtabOpen,
  /* xClose      */ deltaparsevtabClose,
  /* xFilter     */ deltaparsevtabFilter,
  /* xNext       */ deltaparsevtabNext,
  /* xEof        */ deltaparsevtabEof,
  /* xColumn     */ deltaparsevtabColumn,
  /* xRowid      */ deltaparsevtabRowid,
  /* xUpdate     */ 0,
  /* xBegin      */ 0,
  /* xSync       */ 0,
  /* xCommit     */ 0,
  /* xRollback   */ 0,
  /* xFindMethod */ 0,
  /* xRename     */ 0,
  /* xSavepoint  */ 0,
  /* xRelease    */ 0,
  /* xRollbackTo */ 0,
  /* xShadowName */ 0,
  /* xIntegrity  */ 0
};

/*
** Invoke this routine to register the various delta functions.
*/
int deltafunc_init(sqlite3 *db){
  int rc = SQLITE_OK;
  rc = sqlite3_create_function(db, "delta_create", 2, SQLITE_UTF8, 0,
                               deltaCreateFunc, 0, 0);
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "delta_apply", 2, SQLITE_UTF8, 0,
                                 deltaApplyFunc, 0, 0);
  }
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_function(db, "delta_output_size", 1, SQLITE_UTF8, 0,
                                 deltaOutputSizeFunc, 0, 0);
  }
  if( rc==SQLITE_OK ){
    rc = sqlite3_create_module(db, "delta_parse", &deltaparsevtabModule, 0);
  }
  return rc;
}
Changes to src/descendants.c.
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**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to find decendants of a version
** This file contains code used to find descendants of a version
** or leaves of a version tree.
*/
#include "config.h"
#include "descendants.h"
#include <assert.h>


/*
** Create a temporary table named "leaves" if it does not
** already exist.  Load this table with the RID of all
** check-ins that are leaves which are decended from
** check-in iBase.  If iBase==0, find all leaves within the
** check-ins that are leaves which are descended from
** check-in iBase.
** entire check-in hierarchy.
**
** A "leaf" is a check-in that has no children in the same branch.
** There is a separate permanent table LEAF that contains all leaves
** in the tree.  This routine is used to compute a subset of that
** table consisting of leaves that are descended from a single check-in.
**
** The closeMode flag determines behavior associated with the "closed"
** tag:
**
**    closeMode==0       Show all leaves regardless of the "closed" tag.
**
**    closeMode==1       Show only leaves without the "closed" tag.
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  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS leaves("
    "  rid INTEGER PRIMARY KEY"
    ");"
    "DELETE FROM leaves;"
  );

  /* We are checking all descendants of iBase.  If iBase==0, then
  ** use a short-cut to find all leaves anywhere in the hierarchy.
  */
  if( iBase<=0 ){
  if( iBase>0 ){
    db_multi_exec(
      "INSERT OR IGNORE INTO leaves"
      "  SELECT cid FROM plink"
      "  EXCEPT"
      "  SELECT pid FROM plink"
      "   WHERE coalesce((SELECT value FROM tagxref"
                         " WHERE tagid=%d AND rid=plink.pid),'trunk')"
           " == coalesce((SELECT value FROM tagxref"
                         " WHERE tagid=%d AND rid=plink.cid),'trunk');",
      TAG_BRANCH, TAG_BRANCH
    );
  }else{
    Bag seen;     /* Descendants seen */
    Bag pending;  /* Unpropagated descendants */
    Stmt q1;      /* Query to find children of a check-in */
    Stmt isBr;    /* Query to check to see if a check-in starts a new branch */
    Stmt ins;     /* INSERT statement for a new record */

    /* Initialize the bags. */
    bag_init(&seen);
    bag_init(&pending);
    bag_insert(&pending, iBase);

    /* This query returns all non-branch-merge children of check-in :rid.
    **
    ** If a a child is a merge of a fork within the same branch, it is 
    ** If a child is a merge of a fork within the same branch, it is
    ** returned.  Only merge children in different branches are excluded.
    */
    db_prepare(&q1,
      "SELECT cid FROM plink"
      " WHERE pid=:rid"
      "   AND (isprim"
      "        OR coalesce((SELECT value FROM tagxref"
                        "   WHERE tagid=%d AND rid=plink.pid), 'trunk')"
                 "=coalesce((SELECT value FROM tagxref"
                        "   WHERE tagid=%d AND rid=plink.cid), 'trunk'))",
      TAG_BRANCH, TAG_BRANCH
    );
  

    /* This query returns a single row if check-in :rid is the first
    ** check-in of a new branch.
    */
    db_prepare(&isBr, 
    db_prepare(&isBr,
       "SELECT 1 FROM tagxref"
       " WHERE rid=:rid AND tagid=%d AND tagtype=2"
       "   AND srcid>0",
       TAG_BRANCH
    );
  

    /* This statement inserts check-in :rid into the LEAVES table.
    */
    db_prepare(&ins, "INSERT OR IGNORE INTO leaves VALUES(:rid)");
  

    while( bag_count(&pending) ){
      int rid = bag_first(&pending);
      int cnt = 0;
      bag_remove(&pending, rid);
      db_bind_int(&q1, ":rid", rid);
      while( db_step(&q1)==SQLITE_ROW ){
        int cid = db_column_int(&q1, 0);
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      }
    }
    db_finalize(&ins);
    db_finalize(&isBr);
    db_finalize(&q1);
    bag_clear(&pending);
    bag_clear(&seen);
  }else{
    db_multi_exec(
      "INSERT INTO leaves"
      "  SELECT leaf.rid FROM leaf"
    );
  }
  if( closeMode==1 ){
    db_multi_exec(
      "DELETE FROM leaves WHERE rid IN"
      "  (SELECT leaves.rid FROM leaves, tagxref"
      "    WHERE tagxref.rid=leaves.rid "
      "      AND tagxref.tagid=%d"
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

+
-
+
-
-
-
-
-
-
-
+

      "      AND tagxref.tagtype>0)",
      TAG_CLOSED
    );
  }
}

/*
** Load the record ID rid and up to N-1 closest ancestors into
** the "ok" table.
** Load the record ID rid and up to |N|-1 closest ancestors into
** the "ok" table.  If N is zero, no limit.  If ridBackTo is not zero
** then stop the search upon reaching the ancestor with rid==ridBackTo.
*/
void compute_ancestors(int rid, int N){
  Bag seen;
  PQueue queue;
  bag_init(&seen);
  pqueue_init(&queue);
  bag_insert(&seen, rid);
  pqueue_insert(&queue, rid, 0.0);
void compute_ancestors(int rid, int N, int directOnly, int ridBackTo){
  if( !N ){
     N = -1;
  }else if( N<0 ){
     N = -N;
  }
  if( directOnly ){
    /* Direct mode means to show primary parents only */
    db_multi_exec(
      "WITH RECURSIVE "
      "  ancestor(rid, mtime) AS ("
      "    SELECT %d, mtime FROM event WHERE objid=%d "
      "    UNION "
      "    SELECT plink.pid, event.mtime"
      "      FROM ancestor, plink, event"
      "     WHERE plink.cid=ancestor.rid"
      "       AND event.objid=plink.pid"
      "       AND plink.isPrim"
      "     ORDER BY mtime DESC LIMIT %d"
      "  )"
      "INSERT INTO ok"
      "  SELECT rid FROM ancestor;",
      rid, rid, N
    );
  }else{
    /* If not in directMode, also include merge parents, including
    ** cherrypick merges.  Except, terminate searches at the cherrypick
    ** merge parent itself.  In other words, include:
    **    (1)  Primary parents
    **    (2)  Merge parents
    **    (3)  Cherrypick merge parents.
    **    (4)  All ancestores of 1 and 2 but not of 3.
    */
    double rLimitMtime = 0.0;
    if( ridBackTo ){
      rLimitMtime = db_double(0.0,
         "SELECT mtime FROM event WHERE objid=%d",
         ridBackTo);
  while( (N--)>0 && (rid = pqueue_extract(&queue))!=0 ){
    Stmt q;
    db_multi_exec("INSERT OR IGNORE INTO ok VALUES(%d)", rid);
    db_prepare(&q,
       "SELECT a.pid, b.mtime FROM plink a LEFT JOIN plink b ON b.cid=a.pid"
       " WHERE a.cid=%d", rid
    }
    db_multi_exec(
      "WITH RECURSIVE "
      "  parent(pid,cid,isCP) AS ("
      "    SELECT plink.pid, plink.cid, 0 AS xisCP FROM plink"
      "    UNION ALL"
      "    SELECT parentid, childid, 1 FROM cherrypick WHERE NOT isExclude"
      "  ),"
      "  ancestor(rid, mtime, isCP) AS ("
      "    SELECT %d, mtime, 0 FROM event WHERE objid=%d "
      "    UNION "
      "    SELECT parent.pid, event.mtime, parent.isCP"
      "      FROM ancestor, parent, event"
      "     WHERE parent.cid=ancestor.rid"
      "       AND event.objid=parent.pid"
      "       AND NOT ancestor.isCP"
      "       AND (event.mtime>=%.17g OR parent.pid=%d)"
      "     ORDER BY mtime DESC LIMIT %d"
      "  )"
      "INSERT OR IGNORE INTO ok"
      "  SELECT rid FROM ancestor;",
      rid, rid, rLimitMtime, ridBackTo, N
    );
    while( db_step(&q)==SQLITE_ROW ){
      int pid = db_column_int(&q, 0);
      double mtime = db_column_double(&q, 1);
    if( ridBackTo && db_changes()>1 ){
      if( bag_insert(&seen, pid) ){
        pqueue_insert(&queue, pid, -mtime);
      }
    }
      db_multi_exec("INSERT OR IGNORE INTO ok VALUES(%d)", ridBackTo);
    }
  }
    db_finalize(&q);
  }
  bag_clear(&seen);
  pqueue_clear(&queue);
}

/*
** Compute the youngest ancestor of record ID rid that is a member of
** branch zBranch.
*/
int compute_youngest_ancestor_in_branch(int rid, const char *zBranch){
  return db_int(0,
    "WITH RECURSIVE "
    "  ancestor(rid, mtime) AS ("
    "    SELECT %d, mtime FROM event WHERE objid=%d "
    "    UNION "
    "    SELECT plink.pid, event.mtime"
    "      FROM ancestor, plink, event"
    "     WHERE plink.cid=ancestor.rid"
    "       AND event.objid=plink.pid"
    "     ORDER BY mtime DESC"
    "  )"
    "  SELECT ancestor.rid FROM ancestor"
    "   WHERE EXISTS(SELECT 1 FROM tagxref"
                    " WHERE tagid=%d AND tagxref.rid=ancestor.rid"
                    "   AND value=%Q AND tagtype>0)"
    "  ORDER BY mtime DESC"
    "  LIMIT 1",
    rid, rid, TAG_BRANCH, zBranch
  );
}

/*
** Compute all direct ancestors (merge ancestors do not count)
** for the check-in rid and put them in a table named "ancestor".
** Label each generation with consecutive integers going backwards
** in time such that rid has the smallest generation number and the oldest
** direct ancestor as the largest generation number.
*/
void compute_direct_ancestors(int rid){
  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS ancestor(rid INTEGER UNIQUE NOT NULL,"
                                            " generation INTEGER PRIMARY KEY);"
    "DELETE FROM ancestor;"
    "WITH RECURSIVE g(x,i) AS ("
    "  VALUES(%d,1)"
    "  UNION ALL"
    "  SELECT plink.pid, g.i+1 FROM plink, g"
    "   WHERE plink.cid=g.x AND plink.isprim)"
    "INSERT INTO ancestor(rid,generation) SELECT x,i FROM g;",
    rid
  );

}

/*
** Load the record ID rid and up to N-1 closest descendants into
** the "ok" table.
** Compute the "mtime" of the file given whose blob.rid is "fid" that
** is part of check-in "vid".  The mtime will be the mtime on vid or
** some ancestor of vid where fid first appears.
*/
void compute_descendants(int rid, int N){
int mtime_of_manifest_file(
  Bag seen;
  PQueue queue;
  bag_init(&seen);
  int vid,       /* The check-in that contains fid */
  int fid,       /* The id of the file whose check-in time is sought */
  i64 *pMTime    /* Write result here */
){
  pqueue_init(&queue);
  bag_insert(&seen, rid);
  pqueue_insert(&queue, rid, 0.0);
  while( (N--)>0 && (rid = pqueue_extract(&queue))!=0 ){
    Stmt q;
    db_multi_exec("INSERT OR IGNORE INTO ok VALUES(%d)", rid);
    db_prepare(&q,"SELECT cid, mtime FROM plink WHERE pid=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int pid = db_column_int(&q, 0);
      double mtime = db_column_double(&q, 1);
  static int prevVid = -1;
  static Stmt q;

  if( prevVid!=vid ){
    prevVid = vid;
    db_multi_exec("CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY);"
                  "DELETE FROM ok;");
    compute_ancestors(vid, 100000000, 1, 0);
  }
  db_static_prepare(&q,
    "SELECT (max(event.mtime)-2440587.5)*86400 FROM mlink, event"
    " WHERE mlink.mid=event.objid"
    "   AND +mlink.mid IN ok"
    "   AND mlink.fid=:fid");
  db_bind_int(&q, ":fid", fid);
  if( db_step(&q)!=SQLITE_ROW ){
    db_reset(&q);
    return 1;
  }
  *pMTime = db_column_int64(&q, 0);
      if( bag_insert(&seen, pid) ){
        pqueue_insert(&queue, pid, mtime);
      }
    }
    db_finalize(&q);
  }
  db_reset(&q);
  return 0;
}

/*
** Load the record ID rid and up to |N|-1 closest descendants into
** the "ok" table.  If N is zero, no limit.
*/
void compute_descendants(int rid, int N){
  if( !N ){
     N = -1;
  }else if( N<0 ){
     N = -N;
  }
  db_multi_exec(
    "WITH RECURSIVE"
    "  dx(rid,mtime) AS ("
    "     SELECT %d, 0"
    "     UNION"
    "     SELECT plink.cid, plink.mtime FROM dx, plink"
    "      WHERE plink.pid=dx.rid"
    "      ORDER BY 2"
    "  )"
    "INSERT OR IGNORE INTO ok SELECT rid FROM dx LIMIT %d",
    rid, N
  );
}
  bag_clear(&seen);
  pqueue_clear(&queue);
}


/*
** COMMAND: descendants*
**
** Usage: %fossil descendants ?CHECKIN? ?OPTIONS?
**
** Find all leaf descendants of the check-in specified or if the argument
** is omitted, of the check-in currently checked out.
**
** Options:
**    -R|--repository REPO       Extract info from repository REPO
**    -W|--width N               Width of lines (default is to auto-detect).
**                               Must be greater than 20 or else 0 for no
**                               limit, resulting in a one line per entry.
/*
** COMMAND:  descendants
**
** Usage: %fossil descendants ?BASELINE-ID?
**
** Find all leaf descendants of the baseline specified or if the argument
** is omitted, of the baseline currently checked out.
** See also: [[finfo]], [[info]], [[leaves]]
*/
void descendants_cmd(void){
  Stmt q;
  int base;
  int base, width;
  const char *zWidth;

  db_find_and_open_repository(0,0);
  zWidth = find_option("width","W",1);
  if( zWidth ){
    width = atoi(zWidth);
    if( (width!=0) && (width<=20) ){
      fossil_fatal("-W|--width value must be >20 or 0");
    }
  }else{
    width = -1;
  }
  db_must_be_within_tree();

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc==2 ){
    base = db_lget_int("checkout", 0);
  }else{
    base = name_to_rid(g.argv[2]);
    base = name_to_typed_rid(g.argv[2], "ci");
  }
  if( base==0 ) return;
  compute_leaves(base, 0);
  db_prepare(&q,
    "%s"
    "   AND event.objid IN (SELECT rid FROM leaves)"
    " ORDER BY event.mtime DESC",
    timeline_query_for_tty()
  );
  print_timeline(&q, 20);
  print_timeline(&q, 0, width, 0, 0);
  db_finalize(&q);
}

/*
** COMMAND:  leaves
** COMMAND: leaves*
**
** Usage: %fossil leaves ?--all? ?--closed?
** Usage: %fossil leaves ?OPTIONS?
**
** Find leaves of all branches.  By default show only open leaves.
** The --all flag causes all leaves (closed and open) to be shown.
** The --closed flag shows only closed leaves.
** The -a|--all flag causes all leaves (closed and open) to be shown.
** The -c|--closed flag shows only closed leaves.
**
** The --recompute flag causes the content of the "leaf" table in the
** repository database to be recomputed.
**
** Options:
**   -a|--all         Show ALL leaves
**   --bybranch       Order output by branch name
**   -c|--closed      Show only closed leaves
**   -m|--multiple    Show only cases with multiple leaves on a single branch
**   --recompute      Recompute the "leaf" table in the repository DB
**   -W|--width N     Width of lines (default is to auto-detect). Must be
**                    more than 39 or else 0 no limit, resulting in a single
**                    line per entry.
**
** See also: [[descendants]], [[finfo]], [[info]], [[branch]]
*/
void leaves_cmd(void){
  Stmt q;
  Blob sql;
  int showAll = find_option("all", 0, 0)!=0;
  int showClosed = find_option("closed", 0, 0)!=0;
  int showAll = find_option("all", "a", 0)!=0;
  int showClosed = find_option("closed", "c", 0)!=0;
  int recomputeFlag = find_option("recompute",0,0)!=0;
  int byBranch = find_option("bybranch",0,0)!=0;
  int multipleFlag = find_option("multiple","m",0)!=0;
  const char *zWidth = find_option("width","W",1);
  char *zLastBr = 0;
  int n, width;
  char zLineNo[10];
  char * const zMainBranch = db_get("main-branch","trunk");

  if( multipleFlag ) byBranch = 1;
  if( zWidth ){
    width = atoi(zWidth);
    if( (width!=0) && (width<=39) ){
      fossil_fatal("-W|--width value must be >39 or 0");
    }
  }else{
    width = -1;
  }
  db_find_and_open_repository(0,0);

  /* We should be done with options.. */
  verify_all_options();

  db_must_be_within_tree();
  compute_leaves(0, showAll ? 0 : showClosed ? 2 : 1);
  if( recomputeFlag ) leaf_rebuild();
  db_prepare(&q,
    "%s"
    "   AND blob.rid IN leaves"
  blob_zero(&sql);
    " ORDER BY event.mtime DESC",
    timeline_query_for_tty()
  );
  print_timeline(&q, 2000);
  db_finalize(&q);
}

  blob_append(&sql, timeline_query_for_tty(), -1);
  if( !multipleFlag ){
    /* The usual case - show all leaves */
    blob_append_sql(&sql, " AND blob.rid IN leaf");
  }else{
    /* Show only leaves where two are more occur in the same branch */
    db_multi_exec(
      "CREATE TEMP TABLE openLeaf(rid INTEGER PRIMARY KEY);"
      "INSERT INTO openLeaf(rid)"
      "  SELECT rid FROM leaf"
      "   WHERE NOT EXISTS("
      "     SELECT 1 FROM tagxref"
      "      WHERE tagid=%d AND tagtype>0 AND rid=leaf.rid);",
      TAG_CLOSED
    );
    db_multi_exec(
      "CREATE TEMP TABLE ambiguousBranch(brname TEXT);"
      "INSERT INTO ambiguousBranch(brname)"
      " SELECT (SELECT value FROM tagxref WHERE tagid=%d AND rid=openLeaf.rid)"
      "   FROM openLeaf"
      "  GROUP BY 1 HAVING count(*)>1;",
      TAG_BRANCH
    );
    db_multi_exec(
      "CREATE TEMP TABLE ambiguousLeaf(rid INTEGER PRIMARY KEY);\n"
      "INSERT INTO ambiguousLeaf(rid)\n"
      "  SELECT rid FROM openLeaf\n"
      "   WHERE (SELECT value FROM tagxref WHERE tagid=%d AND rid=openLeaf.rid)"
      "         IN (SELECT brname FROM ambiguousBranch);",
      TAG_BRANCH
    );
    blob_append_sql(&sql, " AND blob.rid IN ambiguousLeaf");
  }
  if( showClosed ){
    blob_append_sql(&sql," AND %z", leaf_is_closed_sql("blob.rid"));
  }else if( !showAll ){
    blob_append_sql(&sql," AND NOT %z", leaf_is_closed_sql("blob.rid"));
  }
/*
** This routine is called while for each check-in that is rendered by
** the "leaves" page.  Add some additional hyperlink to show the 
** ancestors of the leaf.
*/
static void leaves_extra(int rid){
  if( g.okHistory ){
    @ <a href="%s(g.zBaseURL)/timeline?p=%d(rid)">[timeline]</a>
  }
}
  if( byBranch ){
    db_prepare(&q, "%s ORDER BY nullif(branch,'trunk') COLLATE nocase,"
                   " event.mtime DESC",
                   blob_sql_text(&sql));
  }else{
    db_prepare(&q, "%s ORDER BY event.mtime DESC", blob_sql_text(&sql));
  }
  blob_reset(&sql);
  n = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zId = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zCom = db_column_text(&q, 3);
    const char *zBr = db_column_text(&q, 7);
    char *z = 0;
    char * zBranchPoint = 0;

    if( byBranch && fossil_strcmp(zBr, zLastBr)!=0 ){
      fossil_print("*** %s ***\n", zBr);
      fossil_free(zLastBr);
      zLastBr = fossil_strdup(zBr);
      if( multipleFlag ) n = 0;
    }
    n++;
    sqlite3_snprintf(sizeof(zLineNo), zLineNo, "(%d)", n);
    fossil_print("%6s ", zLineNo);
    if(0!=fossil_strcmp(zBr,zMainBranch)){
      int ridOfRoot;
      z = mprintf("root:%s", zId);
      ridOfRoot = symbolic_name_to_rid(z, "ci");
      if(ridOfRoot>0){
        zBranchPoint = mprintf(" (branched from: [%.*z])", hash_digits(0),
                               rid_to_uuid(ridOfRoot));
      }
      fossil_free(z);
    }
    z = mprintf("%s [%S] %s%s", zDate, zId, zCom,
                zBranchPoint ? zBranchPoint : "");
    comment_print(z, zCom, 7, width, get_comment_format());
    fossil_free(z);
    fossil_free(zBranchPoint);
  }
  fossil_free(zMainBranch);
  fossil_free(zLastBr);
  db_finalize(&q);
}

/*
** WEBPAGE:  leaves
** WEBPAGE: leaves
**
** Show leaf check-ins in a timeline.  By default only open leaves
** Find leaves of all branches.
*/
void leaves_page(void){
  Stmt q;
  int showAll = P("all")!=0;
  int showClosed = P("closed")!=0;

  login_check_credentials();
** are listed.
**
** A "leaf" is a check-in with no children in the same branch.  A
** "closed leaf" is a leaf that has a "closed" tag.  An "open leaf"
** is a leaf without a "closed" tag.
**
** Query parameters:
**
**     all           Show all leaves
**     closed        Show only closed leaves
**     ng            No graph
**     nohidden      Hide check-ins with "hidden" tag
  if( !g.okRead ){ login_needed(); return; }
**     onlyhidden    Show only check-ins with "hidden" tag
**     brbg          Background color by branch name
**     ubg           Background color by user name
*/
void leaves_page(void){
  Blob sql;
  Stmt q;
  int showAll = P("all")!=0;
  int showClosed = P("closed")!=0;
  int fNg = PB("ng")!=0;           /* Flag for the "ng" query parameter */
  int fNoHidden = PB("nohidden")!=0;      /* "nohidden" query parameter */
  int fOnlyHidden = PB("onlyhidden")!=0;  /* "onlyhidden" query parameter */
  int fBrBg = PB("brbg")!=0;       /* Flag for the "brbg" query parameter */
  int fUBg = PB("ubg")!=0;         /* Flag for the "ubg" query parameter */
  HQuery url;                      /* URL to /leaves plus query parameters */
  int tmFlags;                     /* Timeline display flags */

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  url_initialize(&url, "leaves");
  if( fNg ) url_add_parameter(&url, "ng", "");
  if( fNoHidden ) url_add_parameter(&url, "nohidden", "");
  if( fOnlyHidden ) url_add_parameter(&url, "onlyhidden", "");
  if( fBrBg ) url_add_parameter(&url, "brbg", "");
  if( fUBg ) url_add_parameter(&url, "ubg", "");
  if( !showAll ){
    style_submenu_element("All", "All", "leaves?all");
    style_submenu_element("All", "%s", url_render(&url, "all", "", 0, 0));
  }
  if( !showClosed ){
    style_submenu_element("Closed", "Closed", "leaves?closed");
    style_submenu_element("Closed", "%s", url_render(&url, "closed", "", 0, 0));
  }
  if( showClosed || showAll ){
    style_submenu_element("Open", "Open", "leaves");
    style_submenu_element("Open", "%s", url_render(&url, 0, 0, 0, 0));
  }
  url_reset(&url);
  cgi_check_for_malice();
  style_set_current_feature("leaves");
  style_header("Leaves");
  login_anonymous_available();
  compute_leaves(0, showAll ? 0 : showClosed ? 2 : 1);
  timeline_ss_submenu();
#if 0
  style_sidebox_begin("Nomenclature:", "33%");
  @ <ol>
  @ <li> A <div class="sideboxDescribed">leaf</div>
  @ <li> A <b>leaf</b> is a check-in with no descendants.</li>
  @ <li> An <b>open leaf</b> is a leaf that does not have a "closed" tag
  @ is a check-in with no descendants in the same branch.</li>
  @ <li> An <div class="sideboxDescribed">open leaf</div>
  @ is a leaf that does not have a "closed" tag
  @ and is thus assumed to still be in use.</li>
  @ <li> A <div class="sideboxDescribed">closed leaf</div>
  @ <li> A <b>closed leaf</b> has a "closed" tag and is thus assumed to
  @ has a "closed" tag and is thus assumed to
  @ be historical and no longer in active use.</li>
  @ </ol>
  style_sidebox_end();
#endif

  if( showAll ){
    @ <h1>All leaves, both open and closed:</h1>
  }else if( showClosed ){
    @ <h1>Closed leaves:</h1>
  }else{
    @ <h1>Open leaves:</h1>
  }
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_www(), -1);
  blob_append_sql(&sql, " AND blob.rid IN leaf");
  if( showClosed ){
    blob_append_sql(&sql," AND %z", leaf_is_closed_sql("blob.rid"));
  }else if( !showAll ){
    blob_append_sql(&sql," AND NOT %z", leaf_is_closed_sql("blob.rid"));
  }
  if( fNoHidden || fOnlyHidden ){
    const char* zUnaryOp = fNoHidden ? "NOT" : "";
    blob_append_sql(&sql,
      " AND %s EXISTS(SELECT 1 FROM tagxref"
      " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)\n",
      zUnaryOp/*safe-for-%s*/, TAG_HIDDEN);
  }
  db_prepare(&q,
    "%s"
    "   AND blob.rid IN leaves"
    " ORDER BY event.mtime DESC",
    timeline_query_for_www()
  );
  www_print_timeline(&q, TIMELINE_LEAFONLY, leaves_extra);
  db_prepare(&q, "%s ORDER BY event.mtime DESC", blob_sql_text(&sql));
  blob_reset(&sql);
  /* Always specify TIMELINE_DISJOINT, or graph_finish() may fail because of too
  ** many descenders to (off-screen) parents. */
  tmFlags = TIMELINE_LEAFONLY | TIMELINE_DISJOINT | TIMELINE_NOSCROLL;
  if( fNg==0 ) tmFlags |= TIMELINE_GRAPH;
  if( fBrBg ) tmFlags |= TIMELINE_BRCOLOR;
  if( fUBg ) tmFlags |= TIMELINE_UCOLOR;
  www_print_timeline(&q, tmFlags, 0, 0, 0, 0, 0, 0);
  db_finalize(&q);
  @ <br>
  style_finish_page();
}

#if INTERFACE
/* Flag parameters to compute_uses_file() */
#define USESFILE_DELETE   0x01  /* Include the check-ins where file deleted */

#endif


/*
** Add to table zTab the record ID (rid) of every check-in that contains
** the file fid.
*/
void compute_uses_file(const char *zTab, int fid, int usesFlags){
  Bag seen;
  Bag pending;
  Stmt ins;
  Stmt q;
  int rid;

  bag_init(&seen);
  bag_init(&pending);
  db_prepare(&ins, "INSERT OR IGNORE INTO \"%w\" VALUES(:rid)", zTab);
  db_prepare(&q, "SELECT mid FROM mlink WHERE fid=%d", fid);
  while( db_step(&q)==SQLITE_ROW ){
    int mid = db_column_int(&q, 0);
    bag_insert(&pending, mid);
    bag_insert(&seen, mid);
    db_bind_int(&ins, ":rid", mid);
    db_step(&ins);
    db_reset(&ins);
  }
  db_finalize(&q);

  db_prepare(&q, "SELECT mid FROM mlink WHERE pid=%d", fid);
  while( db_step(&q)==SQLITE_ROW ){
    int mid = db_column_int(&q, 0);
    bag_insert(&seen, mid);
    if( usesFlags & USESFILE_DELETE ){
      db_bind_int(&ins, ":rid", mid);
      db_step(&ins);
      db_reset(&ins);
    }
  }
  db_finalize(&q);
  db_prepare(&q, "SELECT cid FROM plink WHERE pid=:rid AND isprim");

  while( (rid = bag_first(&pending))!=0 ){
    bag_remove(&pending, rid);
    db_bind_int(&q, ":rid", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int mid = db_column_int(&q, 0);
      if( bag_find(&seen, mid) ) continue;
      bag_insert(&seen, mid);
      bag_insert(&pending, mid);
      db_bind_int(&ins, ":rid", mid);
      db_step(&ins);
      db_reset(&ins);
    }
    db_reset(&q);
  }
  db_finalize(&q);
  db_finalize(&ins);
  @ <br clear="both">
  bag_clear(&seen);
  @ <script>
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
  bag_clear(&pending);
}
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to compute a "diff" between two
** text files.
*/
#include "config.h"
#include "diff.h"
#include <assert.h>
#include <errno.h>


#if INTERFACE
/*
** Flag parameters to the text_diff() routine used to control the formatting
** of the diff output.
*/
#define DIFF_IGNORE_EOLWS      0x00000001 /* Ignore end-of-line whitespace */
#define DIFF_IGNORE_ALLWS      0x00000003 /* Ignore all whitespace */
#define DIFF_SIDEBYSIDE        0x00000004 /* Generate a side-by-side diff */
#define DIFF_VERBOSE           0x00000008 /* Missing shown as empty files */
#define DIFF_BRIEF             0x00000010 /* Show filenames only */
#define DIFF_HTML              0x00000020 /* Render for HTML */
#define DIFF_LINENO            0x00000040 /* Show line numbers */
#define DIFF_NUMSTAT           0x00000080 /* Show line count of changes */
#define DIFF_NOOPT             0x00000100 /* Suppress optimizations (debug) */
#define DIFF_INVERT            0x00000200 /* Invert the diff (debug) */
#define DIFF_CONTEXT_EX        0x00000400 /* Use context even if zero */
#define DIFF_NOTTOOBIG         0x00000800 /* Only display if not too big */
#define DIFF_STRIP_EOLCR       0x00001000 /* Strip trailing CR */
#define DIFF_SLOW_SBS          0x00002000 /* Better but slower side-by-side */
#define DIFF_WEBPAGE           0x00004000 /* Complete webpage */
#define DIFF_BROWSER           0x00008000 /* The --browser option */
#define DIFF_JSON              0x00010000 /* JSON output */
#define DIFF_DEBUG             0x00020000 /* Debugging diff output */
#define DIFF_RAW               0x00040000 /* Raw triples - for debugging */
#define DIFF_TCL               0x00080000 /* For the --tk option */
#define DIFF_INCBINARY         0x00100000 /* The --diff-binary option */
#define DIFF_SHOW_VERS         0x00200000 /* Show compared versions */
#define DIFF_DARKMODE          0x00400000 /* Use dark mode for HTML */

/*
** Per file information that may influence output.
*/
#define DIFF_FILE_ADDED        0x40000000 /* Added or rename destination */
#define DIFF_FILE_DELETED      0x80000000 /* Deleted or rename source */
#define DIFF_FILE_MASK         0xc0000000 /* Used for clearing file flags */

/*
** These error messages are shared in multiple locations.  They are defined
** here for consistency.
*/
#define DIFF_CANNOT_COMPUTE_BINARY \
    "cannot compute difference between binary files\n"

#define DIFF_CANNOT_COMPUTE_SYMLINK \
    "cannot compute difference between symlink and regular file\n"

#define DIFF_TOO_MANY_CHANGES \
    "more than 10,000 changes\n"

#define DIFF_WHITESPACE_ONLY \
    "whitespace changes only\n"

/*
** Maximum length of a line in a text file.  (8192)
** Maximum length of a line in a text file, in bytes.  (2**15 = 32768 bytes)
*/
#define LENGTH_MASK_SZ  13
#define LENGTH_MASK_SZ  15
#define LENGTH_MASK     ((1<<LENGTH_MASK_SZ)-1)

/*
** An instance of this object describes the formatting and processing
** details desired of a "diff" operation.
**
** Conceptually, this object is as an encoding of the command-line options
** for the "fossil diff" command.  That is not a precise description, though,
** because not all diff operations are started from the command-line.  But
** the idea is sound.
**
** Information encoded by this object includes but is not limited to:
**
**    *   The desired output format (unified vs. side-by-side,
**        TCL, JSON, HTML vs. plain-text).
**
**    *   Number of lines of context surrounding each difference block
**
**    *   Width of output columns for text side-by-side diffop
*/
struct DiffConfig {
  u64 diffFlags;           /* Diff flags */
  int nContext;            /* Number of lines of context */
  int wColumn;             /* Column width in -y mode */
  u32 nFile;               /* Number of files diffed so far */
  const char *zDiffCmd;    /* External diff command to use instead of builtin */
  const char *zBinGlob;    /* GLOB pattern for binary files */
  ReCompiled *pRe;         /* Show only changes matching this pattern */
  const char *zLeftHash;   /* HASH-id of the left file */
};

#endif /* INTERFACE */

/*
** Initialize memory for a DiffConfig based on just a diffFlags integer.
*/
DiffConfig *diff_config_init(DiffConfig *pCfg, u64 diffFlags){
  memset(pCfg, 0, sizeof(*pCfg));
  pCfg->diffFlags = diffFlags;
  return pCfg;
}

/*
** Information about each line of a file being diffed.
**
** The lower LENGTH_MASK_SZ bits of the hash (DLine.h) are the length
** of the line.  If any line is longer than LENGTH_MASK characters,
** the file is considered binary.
*/
typedef struct DLine DLine;
struct DLine {
  const char *z;        /* The text of the line */
  unsigned int h;       /* Hash of the line */
  unsigned int iNext;   /* 1+(Index of next line with same the same hash) */
  const char *z;          /* The text of the line */
  u64 h;                  /* Hash of the line */
  unsigned short indent;  /* Index of first non-space */
  unsigned short n;       /* number of bytes */
  unsigned short nw;      /* number of bytes without leading/trailing space */
  unsigned int iNext;     /* 1+(Index of next line with same the same hash) */

  /* an array of DLine elements services two purposes.  The fields
  /* an array of DLine elements serves two purposes.  The fields
  ** above are one per line of input text.  But each entry is also
  ** a bucket in a hash table, as follows: */
  unsigned int iHash;   /* 1+(first entry in the hash chain) */
  unsigned int iHash;     /* 1+(first entry in the hash chain) */
};

/*
** Length of a dline
*/
#define LENGTH(X)   ((X)->n)

/*
** Number of diff chunks generated
*/
static int nChunk = 0;

/*
** A context for running a diff.
** A context for running a raw diff.
**
** The aEdit[] array describes the raw diff.  Each triple of integers in
** aEdit[] means:
**
**   (1) COPY:   Number of lines aFrom and aTo have in common
**   (2) DELETE: Number of lines found only in aFrom
**   (3) INSERT: Number of lines found only in aTo
**
** The triples repeat until all lines of both aFrom and aTo are accounted
** for.
*/
typedef struct DContext DContext;
struct DContext {
  int *aEdit;        /* Array of copy/delete/insert triples */
  int nEdit;         /* Number of integers (3x num of triples) in aEdit[] */
  int nEditAlloc;    /* Space allocated for aEdit[] */
  DLine *aFrom;      /* File on left side of the diff */
  int nFrom;         /* Number of lines in aFrom[] */
  DLine *aTo;        /* File on right side of the diff */
  int nTo;           /* Number of lines in aTo[] */
  int (*xDiffer)(const DLine *,const DLine *); /* comparison function */
};

/* Fast isspace for use by diff */
static const char diffIsSpace[] = {
  0, 0, 0, 0, 0, 0, 0, 0,   1, 1, 1, 0, 1, 1, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  1, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,

  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,   0, 0, 0, 0, 0, 0, 0, 0,
};
#define diff_isspace(X)  (diffIsSpace[(unsigned char)(X)])

/*
** Count the number of lines in the input string.  Include the last line
** in the count even if it lacks the \n terminator.  If an empty string
** is specified, the number of lines is zero.  For the purposes of this
** function, a string is considered empty if it contains no characters
** -OR- it contains only NUL characters.
**
** Returns true if the input seems to be plain text input, else false.
** If it returns false, pnLine is not modified, else it is set to the
** number of lines in z.
*/
int count_lines(
  const char *z,
  int n,
  int *pnLine
){
  int nLine;
  const char *zNL, *z2;
  for(nLine=0, z2=z; (zNL = strchr(z2,'\n'))!=0; z2=zNL+1, nLine++){}
  if( z2[0]!='\0' ){
    nLine++;
    do{ z2++; }while( z2[0]!='\0' );
  }
  if( n!=(int)(z2-z) ) return 0;
  if( pnLine ) *pnLine = nLine;
  return 1;
}

/*
** Return an array of DLine objects containing a pointer to the
** start of each line and a hash of that line.  The lower 
** start of each line and a hash of that line.  The lower
** bits of the hash store the length of each line.
**
** Trailing whitespace is removed from each line.
** Trailing whitespace is removed from each line.  2010-08-20:  Not any
** more.  If trailing whitespace is ignored, the "patch" command gets
** confused by the diff output.  Ticket [a9f7b23c2e376af5b0e5b]
**
** Return 0 if the file is binary or contains a line that is
** too long.
**
** Profiling show that in most cases this routine consumes the bulk of
** the CPU time on a diff.
*/
static DLine *break_into_lines(const char *z, int n, int *pnLine){
  int nLine, i, j, k, x;
  unsigned int h, h2;
static DLine *break_into_lines(
  const char *z,
  int n,
  int *pnLine,
  u64 diffFlags
){
  int nLine, i, k, nn, s, x;
  u64 h, h2;
  DLine *a;
  const char *zNL;

  /* Count the number of lines.  Allocate space to hold
  ** the returned array.
  */
  for(i=j=0, nLine=1; i<n; i++, j++){
    int c = z[i];
    if( c==0 ){
      return 0;
    }
    if( c=='\n' && z[i+1]!=0 ){
      nLine++;
  if( count_lines(z, n, &nLine)==0 ){
    return 0;
  }
  assert( nLine>0 || z[0]=='\0' );
  a = fossil_malloc( sizeof(a[0])*nLine );
  memset(a, 0, sizeof(a[0])*nLine);
  if( nLine==0 ){
    *pnLine = 0;
      if( j>LENGTH_MASK ){
        return 0;
      }
      j = 0;
    return a;
  }
  i = 0;
    }
  }
  if( j>LENGTH_MASK ){
    return 0;
  }
  do{
    zNL = strchr(z,'\n');
    if( zNL==0 ) zNL = z+n;
    nn = (int)(zNL - z);
    if( nn>LENGTH_MASK ){
      fossil_free(a);
      return 0;
    }
  a = malloc( nLine*sizeof(a[0]) );
  if( a==0 ) fossil_panic("out of memory");
  memset(a, 0, nLine*sizeof(a[0]) );

  /* Fill in the array */
  for(i=0; i<nLine; i++){
    a[i].z = z;
    k = nn;
    if( diffFlags & DIFF_STRIP_EOLCR ){
    for(j=0; z[j] && z[j]!='\n'; j++){}
    for(k=j; k>0 && isspace(z[k-1]); k--){}
    for(h=0, x=0; x<k; x++){
      h = h ^ (h<<2) ^ z[x];
    }
    a[i].h = h = (h<<LENGTH_MASK_SZ) | k;;
      if( k>0 && z[k-1]=='\r' ){ k--; }
    }
    a[i].n = k;
    if( diffFlags & DIFF_IGNORE_EOLWS ){
      while( k>0 && diff_isspace(z[k-1]) ){ k--; }
    }
    if( (diffFlags & DIFF_IGNORE_ALLWS)==DIFF_IGNORE_ALLWS ){
      int numws = 0;
      for(s=0; s<k && z[s]<=' '; s++){}
      a[i].indent = s;
      a[i].nw = k - s;
      for(h=0, x=s; x<k; x++){
        char c = z[x];
        if( diff_isspace(c) ){
          ++numws;
        }else{
          h = (h^c)*9000000000000000041LL;
        }
      }
      k -= numws;
    }else{
      int k2 = k & ~0x7;
      u64 m;
      for(h=x=s=0; x<k2; x += 8){
        memcpy(&m, z+x, 8);
        h = (h^m)*9000000000000000041LL;
      }
      m = 0;
      memcpy(&m, z+x, k-k2);
      h ^= m;
    }
    a[i].h = h = ((h%281474976710597LL)<<LENGTH_MASK_SZ) | (k-s);
    h2 = h % nLine;
    a[i].iNext = a[h2].iHash;
    a[h2].iHash = i+1;
    z += j+1;
    z += nn+1; n -= nn+1;
  }
    i++;
  }while( zNL[0]!='\0' && zNL[1]!='\0' );
  assert( i==nLine );

  /* Return results */
  *pnLine = nLine;
  return a;
}

/*
** Return true if two DLine elements are identical.
** Return zero if two DLine elements are identical.
*/
static int same_dline(DLine *pA, DLine *pB){
  return pA->h==pB->h && memcmp(pA->z,pB->z,pA->h & LENGTH_MASK)==0;
static int compare_dline(const DLine *pA, const DLine *pB){
  if( pA->h!=pB->h ) return 1;
  return memcmp(pA->z,pB->z, pA->h&LENGTH_MASK);
}

/*
** Append a single line of "diff" output to pOut.
*/
static void appendDiffLine(Blob *pOut, char *zPrefix, DLine *pLine){
** Return zero if two DLine elements are identical, ignoring
** all whitespace. The indent field of pA/pB already points
  blob_append(pOut, zPrefix, 1);
  blob_append(pOut, pLine->z, pLine->h & LENGTH_MASK);
  blob_append(pOut, "\n", 1);
}

** to the first non-space character in the string.
/*
** Expand the size of aEdit[] array to hold nEdit elements.
*/
static void expandEdit(DContext *p, int nEdit){
  int *a;
static int compare_dline_ignore_allws(const DLine *pA, const DLine *pB){
  if( pA->h==pB->h ){
    int a, b;
  a = realloc(p->aEdit, nEdit*sizeof(int));
  if( a==0 ){
    if( memcmp(pA->z, pB->z, pA->h&LENGTH_MASK)==0 ) return 0;
    free( p->aEdit );
    p->nEdit = 0;
    nEdit = 0;
  }
    a = pA->indent;
    b = pB->indent;
    while( a<pA->n || b<pB->n ){
      if( a<pA->n && b<pB->n && pA->z[a++] != pB->z[b++] ) return 1;
      while( a<pA->n && diff_isspace(pA->z[a])) ++a;
      while( b<pB->n && diff_isspace(pB->z[b])) ++b;
    }
  p->aEdit = a;
  p->nEditAlloc = nEdit;
}

    return pA->n-a != pB->n-b;
  }
  return 1;
}

/*
** Return true if the regular expression *pRe matches any of the
** Append a new COPY/DELETE/INSERT triple.
** N dlines
*/
static void appendTriple(DContext *p, int nCopy, int nDel, int nIns){
static int re_dline_match(
  /* printf("APPEND %d/%d/%d\n", nCopy, nDel, nIns); */
  if( p->nEdit>=3 ){
    if( p->aEdit[p->nEdit-1]==0 ){
  ReCompiled *pRe,      /* The regular expression to be matched */
  const DLine *aDLine,  /* First of N DLines to compare against */
  int N                 /* Number of DLines to check */
){
  while( N-- ){
      if( p->aEdit[p->nEdit-2]==0 ){
        p->aEdit[p->nEdit-3] += nCopy;
        p->aEdit[p->nEdit-2] += nDel;
        p->aEdit[p->nEdit-1] += nIns;
        return;
      }
    if( re_match(pRe, (const unsigned char *)aDLine->z, LENGTH(aDLine)) ){
      return 1;
    }
    aDLine++;
  }
  return 0;
}
      if( nCopy==0 ){
        p->aEdit[p->nEdit-2] += nDel;
        p->aEdit[p->nEdit-1] += nIns;
        return;
      }

    }
    if( nCopy==0 && nDel==0 ){
/*
** Append a single line of context-diff output to pOut.
*/
static void appendDiffLine(
  Blob *pOut,         /* Where to write the line of output */
  char cPrefix,       /* One of " ", "+",  or "-" */
  const DLine *pLine  /* The line to be output */
){
      p->aEdit[p->nEdit-1] += nIns;
      return;
    }
  }  
  blob_append_char(pOut, cPrefix);
  blob_append(pOut, pLine->z, pLine->n);
  blob_append_char(pOut, '\n');
}

  if( p->nEdit+3>p->nEditAlloc ){
    expandEdit(p, p->nEdit*2 + 15);
    if( p->aEdit==0 ) return;
/*
** Add two line numbers to the beginning of an output line for a context
** diff.  One or the other of the two numbers might be zero, which means
** to leave that number field blank.
*/
static void appendDiffLineno(Blob *pOut, int lnA, int lnB){
  if( lnA>0 ){
  }
  p->aEdit[p->nEdit++] = nCopy;
  p->aEdit[p->nEdit++] = nDel;
  p->aEdit[p->nEdit++] = nIns;
}


    blob_appendf(pOut, "%6d ", lnA);
  }else{
    blob_append(pOut, "       ", 7);
  }
  if( lnB>0 ){
    blob_appendf(pOut, "%6d  ", lnB);
  }else{
    blob_append(pOut, "        ", 8);
  }
}

/*
** Given a diff context in which the aEdit[] array has been filled
** in, compute a context diff into pOut.
** Output a patch-style text diff.
*/
static void contextDiff(DContext *p, Blob *pOut, int nContext){
  DLine *A;     /* Left side of the diff */
  DLine *B;     /* Right side of the diff */  
  int a = 0;    /* Index of next line in A[] */
  int b = 0;    /* Index of next line in B[] */
static void contextDiff(
  DContext *p,      /* The difference */
  Blob *pOut,       /* Output a context diff to here */
  DiffConfig *pCfg  /* Configuration options */
){
  const DLine *A;   /* Left side of the diff */
  const DLine *B;   /* Right side of the diff */
  int a = 0;        /* Index of next line in A[] */
  int b = 0;        /* Index of next line in B[] */
  int *R;       /* Array of COPY/DELETE/INSERT triples */
  int r;        /* Index into R[] */
  int nr;       /* Number of COPY/DELETE/INSERT triples to process */
  int mxr;      /* Maximum value for r */
  int na, nb;   /* Number of lines shown from A and B */
  int i, j;     /* Loop counters */
  int m;        /* Number of lines to output */
  int skip;     /* Number of lines to skip */
  int nContext;    /* Number of lines of context */
  int showLn;      /* Show line numbers */
  int showDivider = 0;  /* True to show the divider between diff blocks */

  nContext = diff_context_lines(pCfg);
  showLn = (pCfg->diffFlags & DIFF_LINENO)!=0;
  A = p->aFrom;
  B = p->aTo;
  R = p->aEdit;
  mxr = p->nEdit;
  while( mxr>2 && R[mxr-1]==0 && R[mxr-2]==0 ){ mxr -= 3; }
  for(r=0; r<mxr; r += 3*nr){
    /* Figure out how many triples to show in a single block */
    for(nr=1; R[r+nr*3]>0 && R[r+nr*3]<nContext*2; nr++){}
    for(nr=1; 3*nr<mxr && R[r+nr*3]>0 && R[r+nr*3]<(int)nContext*2; nr++){}
    /* printf("r=%d nr=%d\n", r, nr); */

    /* For the current block comprising nr triples, figure out
    ** how many lines of A and B are to be displayed
    */
    if( R[r]>nContext ){
      na = nb = nContext;
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      na += R[r+nr*3];
      nb += R[r+nr*3];
    }
    for(i=1; i<nr; i++){
      na += R[r+i*3];
      nb += R[r+i*3];
    }

    /* Show the header for this block, or if we are doing a modified
    ** context diff that contains line numbers, show the separator from
    ** the previous block.
    */
    nChunk++;
    if( showLn ){
      if( !showDivider ){
        /* Do not show a top divider */
        showDivider = 1;
      }else{
        blob_appendf(pOut, "%.80c\n", '.');
      }
    }else{
      /*
       * If the patch changes an empty file or results in an empty file,
       * the block header must use 0,0 as position indicator and not 1,0.
       * Otherwise, patch would be confused and may reject the diff.
       */
    blob_appendf(pOut,"@@ -%d,%d +%d,%d @@\n", a+skip+1, na, b+skip+1, nb);
      blob_appendf(pOut,"@@ -%d,%d +%d,%d @@",
        na ? a+skip+1 : a+skip, na,
        nb ? b+skip+1 : b+skip, nb);
      blob_append(pOut, "\n", 1);
    }

    /* Show the initial common area */
    a += skip;
    b += skip;
    m = R[r] - skip;
    for(j=0; j<m; j++){
      if( showLn ) appendDiffLineno(pOut, a+j+1, b+j+1);
      appendDiffLine(pOut, " ", &A[a+j]);
      appendDiffLine(pOut, ' ', &A[a+j]);
    }
    a += m;
    b += m;

    /* Show the differences */
    for(i=0; i<nr; i++){
      m = R[r+i*3+1];
      for(j=0; j<m; j++){
        if( showLn ) appendDiffLineno(pOut, a+j+1, 0);
        appendDiffLine(pOut, "-", &A[a+j]);
        appendDiffLine(pOut, '-', &A[a+j]);
      }
      a += m;
      m = R[r+i*3+2];
      for(j=0; j<m; j++){
        if( showLn ) appendDiffLineno(pOut, 0, b+j+1);
        appendDiffLine(pOut, "+", &B[b+j]);
        appendDiffLine(pOut, '+', &B[b+j]);
      }
      b += m;
      if( i<nr-1 ){
        m = R[r+i*3+3];
        for(j=0; j<m; j++){
          if( showLn ) appendDiffLineno(pOut, a+j+1, b+j+1);
          appendDiffLine(pOut, ' ', &A[a+j]);
        }
        b += m;
        a += m;
      }
    }

    /* Show the final common area */
    assert( nr==i );
    m = R[r+nr*3];
    if( m>nContext ) m = nContext;
    for(j=0; j<m; j++){
      if( showLn ) appendDiffLineno(pOut, a+j+1, b+j+1);
      appendDiffLine(pOut, ' ', &A[a+j]);
    }
  }
}

#define MX_CSN  8  /* Maximum number of change spans across a change region */

/*
** A description of zero or more (up to MX_CSN) areas of difference
** between two lines of text.
*/
typedef struct LineChange LineChange;
struct LineChange {
  int n;            /* Number of change spans */
  struct Span {
    int iStart1;    /* Byte offset to start of a change on the left */
    int iLen1;      /* Length of the left change in bytes */
    int iStart2;    /* Byte offset to start of a change on the right */
    int iLen2;      /* Length of the change on the right in bytes */
    int isMin;      /* True if this change is known to have no useful subdivs */
  } a[MX_CSN];     /* Array of change spans, sorted order */
};

/*
** The two text segments zLeft and zRight are known to be different on
** both ends, but they might have  a common segment in the middle.  If
** they do not have a common segment, return 0.  If they do have a large
** common segment, return 1 and before doing so set:
**
**   aLCS[0] = start of the common segment in zLeft
**   aLCS[1] = end of the common segment in zLeft
**   aLCS[2] = start of the common segment in zLeft
**   aLCS[3] = end of the common segment in zLeft
**
** This computation is for display purposes only and does not have to be
** optimal or exact.
*/
static int textLCS(
  const char *zLeft,  int nA,       /* String on the left */
  const char *zRight,  int nB,      /* String on the right */
  int *aLCS                         /* Identify bounds of LCS here */
){
  const unsigned char *zA = (const unsigned char*)zLeft;    /* left string */
  const unsigned char *zB = (const unsigned char*)zRight;   /* right string */
  int i, j, k;               /* Loop counters */
  int lenBest = 0;           /* Match length to beat */

  for(i=0; i<nA-lenBest; i++){
    unsigned char cA = zA[i];
    if( (cA&0xc0)==0x80 ) continue;
    for(j=0; j<nB-lenBest; j++ ){
      if( zB[j]==cA ){
        for(k=1; j+k<nB && i+k<nA && zB[j+k]==zA[i+k]; k++){}
        while( (zB[j+k]&0xc0)==0x80 ){ k--; }
        if( k>lenBest ){
          lenBest = k;
          aLCS[0] = i;
          aLCS[1] = i+k;
          aLCS[2] = j;
          aLCS[3] = j+k;
        }
      }
    }
  }
  return lenBest>0;
}

/*
** Find the smallest spans that are different between two text strings that
** are known to be different on both ends.
*/
static int textLineChanges(
  const char *zLeft,  int nA,       /* String on the left */
  const char *zRight,  int nB,      /* String on the right */
  LineChange *p                     /* Write results here */
){
  p->n = 1;
  p->a[0].iStart1 = 0;
  p->a[0].iLen1 = nA;
  p->a[0].iStart2 = 0;
  p->a[0].iLen2 = nB;
  p->a[0].isMin = 0;
  while( p->n<MX_CSN-1 ){
    int mxi = -1;
    int mxLen = -1;
    int x, i;
    int aLCS[4];
    struct Span *a, *b;
    memset(aLCS, 0, sizeof(aLCS));
    for(i=0; i<p->n; i++){
      if( p->a[i].isMin ) continue;
      x = p->a[i].iLen1;
      if( p->a[i].iLen2<x ) x = p->a[i].iLen2;
      if( x>mxLen ){
        mxLen = x;
        mxi = i;
      }
    }
    if( mxLen<6 ) break;
    x = textLCS(zLeft + p->a[mxi].iStart1, p->a[mxi].iLen1,
                zRight + p->a[mxi].iStart2, p->a[mxi].iLen2, aLCS);
    if( x==0 ){
      p->a[mxi].isMin = 1;
      continue;
    }
    a = p->a+mxi;
    b = a+1;
    if( mxi<p->n-1 ){
      memmove(b+1, b, sizeof(*b)*(p->n-mxi-1));
    }
    p->n++;
    b->iStart1 = a->iStart1 + aLCS[1];
    b->iLen1 = a->iLen1 - aLCS[1];
    a->iLen1 = aLCS[0];
    b->iStart2 = a->iStart2 + aLCS[3];
    b->iLen2 = a->iLen2 - aLCS[3];
    a->iLen2 = aLCS[2];
    b->isMin = 0;
  }
  return p->n;
}

/*
** Return true if the string starts with n spaces
*/
static int allSpaces(const char *z, int n){
  int i;
  for(i=0; i<n && diff_isspace(z[i]); i++){}
  return i==n;
}

/*
** Try to improve the human-readability of the LineChange p.
**
** (1)  If the first change span shows a change of indentation, try to
**      move that indentation change to the left margin.
**
** (2)  Try to shift changes so that they begin or end with a space.
*/
static void improveReadability(
  const char *zA,  /* Left line of the change */
  const char *zB,  /* Right line of the change */
  LineChange *p    /* The LineChange to be adjusted */
){
  int j, n, len;
  if( p->n<1 ) return;

  /* (1) Attempt to move indentation changes to the left margin */
  if( p->a[0].iLen1==0
   && (len = p->a[0].iLen2)>0
   && (j = p->a[0].iStart2)>0
   && zB[0]==zB[j]
   && allSpaces(zB, j)
  ){
    for(n=1; n<len && n<j && zB[j]==zB[j+n]; n++){}
    if( n<len ){
      memmove(&p->a[1], &p->a[0], sizeof(p->a[0])*p->n);
      p->n++;
      p->a[0] = p->a[1];
      p->a[1].iStart2 += n;
      p->a[1].iLen2 -= n;
      p->a[0].iLen2 = n;
    }
    p->a[0].iStart1 = 0;
    p->a[0].iStart2 = 0;
  }else
  if( p->a[0].iLen2==0
   && (len = p->a[0].iLen1)>0
   && (j = p->a[0].iStart1)>0
   && zA[0]==zA[j]
   && allSpaces(zA, j)
  ){
    for(n=1; n<len && n<j && zA[j]==zA[j+n]; n++){}
    if( n<len ){
      memmove(&p->a[1], &p->a[0], sizeof(p->a[0])*p->n);
      p->n++;
      p->a[0] = p->a[1];
      p->a[1].iStart1 += n;
      p->a[1].iLen1 -= n;
      p->a[0].iLen1 = n;
    }
    p->a[0].iStart1 = 0;
    p->a[0].iStart2 = 0;
  }

  /* (2) Try to shift changes so that they begin or end with a
  ** space.  (TBD) */
}


/*
** Given two lines of text, pFrom and pTo, compute a set of changes
** between those two lines, for enhanced display purposes.
**
** The result is written into the LineChange object given by the
** third parameter.
*/
static void oneLineChange(
  const DLine *pLeft,  /* Left line of the change */
  const DLine *pRight, /* Right line of the change */
  LineChange *p        /* OUTPUT: Write the results here */
){
  int nLeft;           /* Length of left line in bytes */
  int nRight;          /* Length of right line in bytes */
  int nShort;          /* Shortest of left and right */
  int nPrefix;         /* Length of common prefix */
  int nSuffix;         /* Length of common suffix */
  int nCommon;         /* Total byte length of suffix and prefix */
  const char *zLeft;   /* Text of the left line */
  const char *zRight;  /* Text of the right line */
  int nLeftDiff;       /* nLeft - nPrefix - nSuffix */
  int nRightDiff;      /* nRight - nPrefix - nSuffix */

  nLeft = pLeft->n;
  zLeft = pLeft->z;
  nRight = pRight->n;
  zRight = pRight->z;
  nShort = nLeft<nRight ? nLeft : nRight;

  nPrefix = 0;
  while( nPrefix<nShort && zLeft[nPrefix]==zRight[nPrefix] ){
    nPrefix++;
  }
  if( nPrefix<nShort ){
    while( nPrefix>0 && (zLeft[nPrefix]&0xc0)==0x80 ) nPrefix--;
  }
  nSuffix = 0;
  if( nPrefix<nShort ){
    while( nSuffix<nShort
           && zLeft[nLeft-nSuffix-1]==zRight[nRight-nSuffix-1] ){
      nSuffix++;
    }
    if( nSuffix<nShort ){
      while( nSuffix>0 && (zLeft[nLeft-nSuffix]&0xc0)==0x80 ) nSuffix--;
    }
    if( nSuffix==nLeft || nSuffix==nRight ) nPrefix = 0;
  }
  nCommon = nPrefix + nSuffix;

  /* If the prefix and suffix overlap, that means that we are dealing with
  ** a pure insertion or deletion of text that can have multiple alignments.
  ** Try to find an alignment to begins and ends on whitespace, or on
  ** punctuation, rather than in the middle of a name or number.
  */
  if( nCommon > nShort ){
    int iBest = -1;
    int iBestVal = -1;
    int i;
    int nLong = nLeft<nRight ? nRight : nLeft;
    int nGap = nLong - nShort;
    for(i=nShort-nSuffix; i<=nPrefix; i++){
       int iVal = 0;
       char c = zLeft[i];
       if( diff_isspace(c) ){
         iVal += 5;
       }else if( !fossil_isalnum(c) ){
         iVal += 2;
       }
       c = zLeft[i+nGap-1];
       if( diff_isspace(c) ){
         iVal += 5;
       }else if( !fossil_isalnum(c) ){
         iVal += 2;
       }
       if( iVal>iBestVal ){
         iBestVal = iVal;
         iBest = i;
       }
    }
    nPrefix = iBest;
    nSuffix = nShort - nPrefix;
    nCommon = nPrefix + nSuffix;
  }

  /* A single chunk of text inserted */
  if( nCommon==nLeft ){
    p->n = 1;
    p->a[0].iStart1 = nPrefix;
    p->a[0].iLen1 = 0;
    p->a[0].iStart2 = nPrefix;
    p->a[0].iLen2 = nRight - nCommon;
    improveReadability(zLeft, zRight, p);
    return;
  }

  /* A single chunk of text deleted */
  if( nCommon==nRight ){
    p->n = 1;
    p->a[0].iStart1 = nPrefix;
    p->a[0].iLen1 = nLeft - nCommon;
    p->a[0].iStart2 = nPrefix;
    p->a[0].iLen2 = 0;
    improveReadability(zLeft, zRight, p);
    return;
  }

  /* At this point we know that there is a chunk of text that has
  ** changed between the left and the right.  Check to see if there
  ** is a large unchanged section in the middle of that changed block.
  */
  nLeftDiff = nLeft - nCommon;
  nRightDiff = nRight - nCommon;
  if( nLeftDiff >= 4
   && nRightDiff >= 4
   && textLineChanges(&zLeft[nPrefix], nLeftDiff,
                      &zRight[nPrefix], nRightDiff, p)>1
  ){
    int i;
    for(i=0; i<p->n; i++){
      p->a[i].iStart1 += nPrefix;
      p->a[i].iStart2 += nPrefix;
    }
    improveReadability(zLeft, zRight, p);
    return;
  }

  /* If all else fails, show a single big change between left and right */
  p->n = 1;
  p->a[0].iStart1 = nPrefix;
  p->a[0].iLen1 = nLeft - nCommon;
  p->a[0].iStart2 = nPrefix;
  p->a[0].iLen2 = nRight - nCommon;
  improveReadability(zLeft, zRight, p);
}

/*
** COMMAND: test-line-diff
** Usage: %fossil% test-line-diff STRING1 STRING2
**
** Show the differences between the two strings.  Used for testing
** the oneLineChange() routine in the diff logic.
*/
void test_line_diff(void){
  DLine a, b;
  LineChange chng;
  int i, j, x;
  if( g.argc!=4 ) usage("STRING1 STRING2");
  a.z = g.argv[2];
  a.n = (int)strlen(a.z);
  b.z = g.argv[3];
  b.n = (int)strlen(b.z);
  oneLineChange(&a, &b, &chng);
  fossil_print("left:  [%s]\n", a.z);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart1;
    int len = chng.a[i].iLen1;
    if( len ){
      if( x==0 ){ fossil_print("%*s", 8, ""); }
      while( ofst > x ){
        if( (a.z[x]&0xc0)!=0x80 ) fossil_print(" ");
        x++;
      }
      for(j=0; j<len; j++, x++){
        if( (a.z[x]&0xc0)!=0x80 ) fossil_print("%d",i);
      }
    }
  }
  if( x ) fossil_print("\n");
  fossil_print("right: [%s]\n", b.z);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart2;
    int len = chng.a[i].iLen2;
    if( len ){
      if( x==0 ){ fossil_print("%*s", 8, ""); }
      while( ofst > x ){
        if( (b.z[x]&0xc0)!=0x80 ) fossil_print(" ");
        x++;
      }
      for(j=0; j<len; j++, x++){
        if( (b.z[x]&0xc0)!=0x80 ) fossil_print("%d",i);
      }
    }
  }
  if( x ) fossil_print("\n");
}

/*
** Minimum of two values
*/
static int minInt(int a, int b){ return a<b ? a : b; }



/*
** This is an abstract superclass for an object that accepts difference
** lines and formats them for display.  Subclasses of this object format
** the diff output in different ways.
**
** To subclass, create an instance of the DiffBuilder object and fill
** in appropriate method implementations.
*/
typedef struct DiffBuilder DiffBuilder;
struct DiffBuilder {
  void (*xSkip)(DiffBuilder*, unsigned int, int);
  void (*xCommon)(DiffBuilder*,const DLine*);
  void (*xInsert)(DiffBuilder*,const DLine*);
  void (*xDelete)(DiffBuilder*,const DLine*);
  void (*xReplace)(DiffBuilder*,const DLine*,const DLine*);
  void (*xEdit)(DiffBuilder*,const DLine*,const DLine*);
  void (*xEnd)(DiffBuilder*);
  unsigned int lnLeft;              /* Lines seen on the left (delete) side */
  unsigned int lnRight;             /* Lines seen on the right (insert) side */
  unsigned int nPending;            /* Number of pending lines */
  int eState;                       /* State of the output */
  int width;                        /* Display width */
  Blob *pOut;                       /* Output blob */
  Blob aCol[5];                     /* Holding blobs */
  DiffConfig *pCfg;                 /* Configuration information */
};

/************************* DiffBuilderDebug ********************************/
/* This version of DiffBuilder is used for debugging the diff and diff
** diff formatter logic.  It is accessed using the (undocumented) --debug
** option to the diff command.  The output is human-readable text that
** describes the various method calls that are invoked agains the DiffBuilder
** object.
*/
static void dfdebugSkip(DiffBuilder *p, unsigned int n, int isFinal){
  blob_appendf(p->pOut, "SKIP %d (%d..%d left and %d..%d right)%s\n",
                n, p->lnLeft+1, p->lnLeft+n, p->lnRight+1, p->lnRight+n,
                isFinal ? " FINAL" : "");
  p->lnLeft += n;
  p->lnRight += n;
}
static void dfdebugCommon(DiffBuilder *p, const DLine *pLine){
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut, "COMMON  %8u %8u %.*s\n",
      p->lnLeft, p->lnRight, (int)pLine->n, pLine->z);
}
static void dfdebugInsert(DiffBuilder *p, const DLine *pLine){
  p->lnRight++;
  blob_appendf(p->pOut, "INSERT           %8d %.*s\n",
      p->lnRight, (int)pLine->n, pLine->z);
}
static void dfdebugDelete(DiffBuilder *p, const DLine *pLine){
  p->lnLeft++;
  blob_appendf(p->pOut, "DELETE  %8u          %.*s\n",
      p->lnLeft, (int)pLine->n, pLine->z);
}
static void dfdebugReplace(DiffBuilder *p, const DLine *pX, const DLine *pY){
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut, "REPLACE %8u          %.*s\n",
      p->lnLeft, (int)pX->n, pX->z);
  blob_appendf(p->pOut, "            %8u %.*s\n",
      p->lnRight, (int)pY->n, pY->z);
}
static void dfdebugEdit(DiffBuilder *p, const DLine *pX, const DLine *pY){
  int i, j;
  int x;
  LineChange chng;
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut, "EDIT    %8u          %.*s\n",
               p->lnLeft, (int)pX->n, pX->z);
  oneLineChange(pX, pY, &chng);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart1;
    int len = chng.a[i].iLen1;
    if( len ){
      char c = '0' + i;
      if( x==0 ){ blob_appendf(p->pOut, "%*s", 26, ""); }
      while( ofst > x ){
        if( (pX->z[x]&0xc0)!=0x80 ) blob_append_char(p->pOut, ' ');
        x++;
      }
      for(j=0; j<len; j++, x++){
        if( (pX->z[x]&0xc0)!=0x80 ) blob_append_char(p->pOut, c);
      }
    }
  }
  if( x ) blob_append_char(p->pOut, '\n');
  blob_appendf(p->pOut, "                 %8u %.*s\n",
               p->lnRight, (int)pY->n, pY->z);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart2;
    int len = chng.a[i].iLen2;
    if( len ){
      char c = '0' + i;
      if( x==0 ){ blob_appendf(p->pOut, "%*s", 26, ""); }
      while( ofst > x ){
        if( (pY->z[x]&0xc0)!=0x80 ) blob_append_char(p->pOut, ' ');
        x++;
      }
      for(j=0; j<len; j++, x++){
        if( (pY->z[x]&0xc0)!=0x80 ) blob_append_char(p->pOut, c);
      }
    }
  }
  if( x ) blob_append_char(p->pOut, '\n');
}
static void dfdebugEnd(DiffBuilder *p){
  blob_appendf(p->pOut, "END with %u lines left and %u lines right\n",
     p->lnLeft, p->lnRight);
  fossil_free(p);
}
static DiffBuilder *dfdebugNew(Blob *pOut){
  DiffBuilder *p = fossil_malloc(sizeof(*p));
  p->xSkip = dfdebugSkip;
  p->xCommon = dfdebugCommon;
  p->xInsert = dfdebugInsert;
  p->xDelete = dfdebugDelete;
  p->xReplace = dfdebugReplace;
  p->xEdit = dfdebugEdit;
  p->xEnd = dfdebugEnd;
  p->lnLeft = p->lnRight = 0;
  p->pOut = pOut;
  return p;
}

/************************* DiffBuilderTcl ********************************/
/*
** This formatter outputs a description of the diff formatted as TCL, for
** use by the --tk option to "diff".   See also the "diff.tcl" file.  The
** output can be viewed directly using the --tcl option.
**
** There is one line per method call:
**
**     SKIP n                      -- Skip "n" lines of input
**     COM string                  -- "string" is an unchanged context line
**     INS string                  -- "string" is in the right file only
**     DEL string                  -- "string" is in the left file only
**     EDIT string ....            -- Complex edit between left and right
**
** The EDIT verb will be followed by 3*N or 3*N+1 strings.  The triples
** each show:
**
**     1.  Common text
**     2.  Text from the left side
**     3.  Text on the right that replaces (2) from the left
**
** For inserted text (2) will be an empty string.  For deleted text, (3)
** will be an empty string.  (1) might be empty for the first triple if
** the line begins with an edit.  After all triples, there might be one
** additional string which is a common suffix.
*/
static void dftclSkip(DiffBuilder *p, unsigned int n, int isFinal){
  blob_appendf(p->pOut, "SKIP %u\n", n);
}
static void dftclCommon(DiffBuilder *p, const DLine *pLine){
  blob_appendf(p->pOut, "COM ");
  blob_append_tcl_literal(p->pOut, pLine->z, pLine->n);
  blob_append_char(p->pOut, '\n');
}
static void dftclInsert(DiffBuilder *p, const DLine *pLine){
  blob_append(p->pOut, "INS ", -1);
  blob_append_tcl_literal(p->pOut, pLine->z, pLine->n);
  blob_append_char(p->pOut, '\n');
}
static void dftclDelete(DiffBuilder *p, const DLine *pLine){
  blob_append(p->pOut, "DEL ", -1);
  blob_append_tcl_literal(p->pOut, pLine->z, pLine->n);
  blob_append_char(p->pOut, '\n');
}
static void dftclReplace(DiffBuilder *p, const DLine *pX, const DLine *pY){
  blob_append(p->pOut, "EDIT \"\" ", -1);
  blob_append_tcl_literal(p->pOut, pX->z, pX->n);
  blob_append_char(p->pOut, ' ');
  blob_append_tcl_literal(p->pOut, pY->z, pY->n);
  blob_append_char(p->pOut, '\n');
}
static void dftclEdit(DiffBuilder *p, const DLine *pX, const DLine *pY){
  int i, x;
  LineChange chng;
  blob_append(p->pOut, "EDIT", 4);
  oneLineChange(pX, pY, &chng);
  for(i=x=0; i<chng.n; i++){
    blob_append_char(p->pOut, ' ');
    blob_append_tcl_literal(p->pOut, pX->z + x, chng.a[i].iStart1 - x);
    x = chng.a[i].iStart1;
    blob_append_char(p->pOut, ' ');
    blob_append_tcl_literal(p->pOut, pX->z + x, chng.a[i].iLen1);
    x += chng.a[i].iLen1;
    blob_append_char(p->pOut, ' ');
    blob_append_tcl_literal(p->pOut,
                         pY->z + chng.a[i].iStart2, chng.a[i].iLen2);
  }
  if( x<pX->n ){
    blob_append_char(p->pOut, ' ');
    blob_append_tcl_literal(p->pOut, pX->z + x, pX->n - x);
  }
  blob_append_char(p->pOut, '\n');
}
static void dftclEnd(DiffBuilder *p){
  fossil_free(p);
}
static DiffBuilder *dftclNew(Blob *pOut){
  DiffBuilder *p = fossil_malloc(sizeof(*p));
  p->xSkip = dftclSkip;
  p->xCommon = dftclCommon;
  p->xInsert = dftclInsert;
  p->xDelete = dftclDelete;
  p->xReplace = dftclReplace;
  p->xEdit = dftclEdit;
  p->xEnd = dftclEnd;
  p->pOut = pOut;
  return p;
}

/************************* DiffBuilderJson ********************************/
/*
** This formatter generates a JSON array that describes the difference.
**
** The Json array consists of integer opcodes with each opcode followed
** by zero or more arguments:
**
**   Syntax        Mnemonic    Description
**   -----------   --------    --------------------------
**   0             END         This is the end of the diff
**   1  INTEGER    SKIP        Skip N lines from both files
**   2  STRING     COMMON      The line shown by STRING is in both files
**   3  STRING     INSERT      The line STRING is in only the right file
**   4  STRING     DELETE      The STRING line is in only the left file
**   5  SUBARRAY   EDIT        One line is different on left and right.
**
** The SUBARRAY is an array of 3*N+1 strings with N>=0.  The triples
** represent common-text, left-text, and right-text.  The last string
** in SUBARRAY is the common-suffix.  Any string can be empty if it does
** not apply.
*/
static void dfjsonSkip(DiffBuilder *p, unsigned int n, int isFinal){
  blob_appendf(p->pOut, "1,%u,\n", n);
}
static void dfjsonCommon(DiffBuilder *p, const DLine *pLine){
  blob_append(p->pOut, "2,",2);
  blob_append_json_literal(p->pOut, pLine->z, (int)pLine->n);
  blob_append(p->pOut, ",\n",2);
}
static void dfjsonInsert(DiffBuilder *p, const DLine *pLine){
  blob_append(p->pOut, "3,",2);
  blob_append_json_literal(p->pOut, pLine->z, (int)pLine->n);
  blob_append(p->pOut, ",\n",2);
}
static void dfjsonDelete(DiffBuilder *p, const DLine *pLine){
  blob_append(p->pOut, "4,",2);
  blob_append_json_literal(p->pOut, pLine->z, (int)pLine->n);
  blob_append(p->pOut, ",\n",2);
}
static void dfjsonReplace(DiffBuilder *p, const DLine *pX, const DLine *pY){
  blob_append(p->pOut, "5,[\"\",",-1);
  blob_append_json_literal(p->pOut, pX->z, (int)pX->n);
  blob_append(p->pOut, ",",1);
  blob_append_json_literal(p->pOut, pY->z, (int)pY->n);
  blob_append(p->pOut, ",\"\"],\n",-1);
}
static void dfjsonEdit(DiffBuilder *p, const DLine *pX, const DLine *pY){
  int i, x;
  LineChange chng;
  blob_append(p->pOut, "5,[", 3);
  oneLineChange(pX, pY, &chng);
  for(i=x=0; i<chng.n; i++){
    if(i>0){
      blob_append_char(p->pOut, ',');
    }
    blob_append_json_literal(p->pOut, pX->z + x, chng.a[i].iStart1 - x);
    x = chng.a[i].iStart1;
    blob_append_char(p->pOut, ',');
    blob_append_json_literal(p->pOut, pX->z + x, chng.a[i].iLen1);
    x += chng.a[i].iLen1;
    blob_append_char(p->pOut, ',');
    blob_append_json_literal(p->pOut,
                         pY->z + chng.a[i].iStart2, chng.a[i].iLen2);
  }
  blob_append_char(p->pOut, ',');
  blob_append_json_literal(p->pOut, pX->z + x, pX->n - x);
  blob_append(p->pOut, "],\n",3);
}
static void dfjsonEnd(DiffBuilder *p){
  blob_append(p->pOut, "0]}", 3);
  fossil_free(p);
}
static DiffBuilder *dfjsonNew(Blob *pOut){
  DiffBuilder *p = fossil_malloc(sizeof(*p));
  p->xSkip = dfjsonSkip;
  p->xCommon = dfjsonCommon;
  p->xInsert = dfjsonInsert;
  p->xDelete = dfjsonDelete;
  p->xReplace = dfjsonReplace;
  p->xEdit = dfjsonEdit;
  p->xEnd = dfjsonEnd;
  p->lnLeft = p->lnRight = 0;
  p->pOut = pOut;
  blob_append_char(pOut, '[');
  return p;
}

/************************* DiffBuilderUnified********************************/
/* This formatter generates a unified diff for HTML.
**
** The result is a <table> with four columns.  The four columns hold:
**
**     1.   The line numbers for the first file.
**     2.   The line numbers for the second file.
**     3.   The "diff mark":  "+" or "-" or just a space
**     4.   Text of the line
**
** Inserted lines are marked with <ins> and deleted lines are marked
** with <del>.  The whole line is marked this way, not just the part that
** changed.  The part that change has an additional nested <ins> or <del>.
** The CSS needs to be set up such that a single <ins> or <del> gives a
** light background and a nested <ins> or <del> gives a darker background.
** Additional attributes (like bold font) might also be added to nested
** <ins> and <del> since those are the characters that have actually
** changed.
**
** Accumulator strategy:
**
**    *   Delete line numbers are output directly to p->pOut
**    *   Insert line numbers accumulate in p->aCol[0].
**    *   Separator marks accumulate in p->aCol[1].
**    *   Change text accumulates in p->aCol[2].
**    *   Pending insert line numbers go into p->aCol[3].
**    *   Pending insert text goes into p->aCol[4].
**
** eState is 1 if text has an open <del>
*/
static void dfunifiedFinishDelete(DiffBuilder *p){
  if( p->eState==0 ) return;
  blob_append(p->pOut, "</del>", 6);
  blob_append(&p->aCol[2], "</del>", 6);
  p->eState = 0;
}
static void dfunifiedFinishInsert(DiffBuilder *p){
  unsigned int i;
  if( p->nPending==0 ) return;
  dfunifiedFinishDelete(p);

  /* Blank lines for delete line numbers for each inserted line */
  for(i=0; i<p->nPending; i++) blob_append_char(p->pOut, '\n');

  /* Insert line numbers */
  blob_append(&p->aCol[0], "<ins>", 5);
  blob_append_xfer(&p->aCol[0], &p->aCol[3]);
  blob_append(&p->aCol[0], "</ins>", 6);

  /* "+" marks for the separator on inserted lines */
  for(i=0; i<p->nPending; i++) blob_append(&p->aCol[1], "+\n", 2);

  /* Text of the inserted lines */
  blob_append(&p->aCol[2], "<ins>", 5);
  blob_append_xfer(&p->aCol[2], &p->aCol[4]);
  blob_append(&p->aCol[2], "</ins>", 6);

  p->nPending = 0;
}
static void dfunifiedFinishRow(DiffBuilder *p){
  dfunifiedFinishDelete(p);
  dfunifiedFinishInsert(p);
  if( blob_size(&p->aCol[0])==0 ) return;
  blob_append(p->pOut, "</pre></td><td class=\"diffln difflnr\"><pre>\n", -1);
  blob_append_xfer(p->pOut, &p->aCol[0]);
  blob_append(p->pOut, "</pre></td><td class=\"diffsep\"><pre>\n", -1);
  blob_append_xfer(p->pOut, &p->aCol[1]);
  blob_append(p->pOut, "</pre></td><td class=\"difftxt difftxtu\"><pre>\n",-1);
  blob_append_xfer(p->pOut, &p->aCol[2]);
  blob_append(p->pOut, "</pre></td></tr>\n", -1);
}
static void dfunifiedStartRow(DiffBuilder *p){
  if( blob_size(&p->aCol[0])>0 ) return;
  blob_appendf(p->pOut,"<tr id=\"chunk%d\" class=\"diffchunk\">"
                       "<td class=\"diffln difflnl\"><pre>\n", ++nChunk);
}
static void dfunifiedSkip(DiffBuilder *p, unsigned int n, int isFinal){
  dfunifiedFinishRow(p);
  if( p->pCfg && p->pCfg->zLeftHash ){
    blob_appendf(p->pOut,
       "<tr class=\"diffskip\" data-startln=\"%d\" data-endln=\"%d\""
       " id=\"skip%xh%xi%x\">\n",
       p->lnLeft+1, p->lnLeft+n,
       nChunk, p->lnLeft, n);
  }else{
    blob_append(p->pOut, "<tr>", 4);
  }
  blob_append(p->pOut, "<td class=\"diffln difflne\">"
                       "&#xfe19;</td><td></td><td></td></tr>\n", -1);
  p->lnLeft += n;
  p->lnRight += n;
}
static void dfunifiedCommon(DiffBuilder *p, const DLine *pLine){
  dfunifiedStartRow(p);
  dfunifiedFinishDelete(p);
  dfunifiedFinishInsert(p);
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  blob_appendf(&p->aCol[0],"%d\n",p->lnRight);
  blob_append_char(&p->aCol[1], '\n');
  htmlize_to_blob(&p->aCol[2], pLine->z, (int)pLine->n);
  blob_append_char(&p->aCol[2], '\n');
}
static void dfunifiedInsert(DiffBuilder *p, const DLine *pLine){
  dfunifiedStartRow(p);
  p->lnRight++;
  blob_appendf(&p->aCol[3],"%d\n", p->lnRight);
  blob_append(&p->aCol[4], "<ins>", 5);
  htmlize_to_blob(&p->aCol[4], pLine->z, (int)pLine->n);
  blob_append(&p->aCol[4], "</ins>\n", 7);
  p->nPending++;
}
static void dfunifiedDelete(DiffBuilder *p, const DLine *pLine){
  dfunifiedStartRow(p);
  dfunifiedFinishInsert(p);
  if( p->eState==0 ){
    dfunifiedFinishInsert(p);
    blob_append(p->pOut, "<del>", 5);
    blob_append(&p->aCol[2], "<del>", 5);
    p->eState = 1;
  }
  p->lnLeft++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  blob_append_char(&p->aCol[0],'\n');
  blob_append(&p->aCol[1],"-\n",2);
  blob_append(&p->aCol[2], "<del>", 5);
  htmlize_to_blob(&p->aCol[2], pLine->z, (int)pLine->n);
  blob_append(&p->aCol[2], "</del>\n", 7);
}
static void dfunifiedReplace(DiffBuilder *p, const DLine *pX, const DLine *pY){
  dfunifiedStartRow(p);
  if( p->eState==0 ){
    dfunifiedFinishInsert(p);
    blob_append(p->pOut, "<del>", 5);
    blob_append(&p->aCol[2], "<del>", 5);
    p->eState = 1;
  }
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  blob_append_char(&p->aCol[0], '\n');
  blob_append(&p->aCol[1], "-\n", 2);

  htmlize_to_blob(&p->aCol[2], pX->z,  pX->n);
  blob_append_char(&p->aCol[2], '\n');

  blob_appendf(&p->aCol[3],"%d\n", p->lnRight);

  htmlize_to_blob(&p->aCol[4], pY->z,  pY->n);
  blob_append_char(&p->aCol[4], '\n');
  p->nPending++;
}
static void dfunifiedEdit(DiffBuilder *p, const DLine *pX, const DLine *pY){
  int i;
  int x;
  LineChange chng;
  oneLineChange(pX, pY, &chng);
  dfunifiedStartRow(p);
  if( p->eState==0 ){
    dfunifiedFinishInsert(p);
    blob_append(p->pOut, "<del>", 5);
    blob_append(&p->aCol[2], "<del>", 5);
    p->eState = 1;
  }
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  blob_append_char(&p->aCol[0], '\n');
  blob_append(&p->aCol[1], "-\n", 2);

  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart1;
    int len = chng.a[i].iLen1;
    if( len ){
      htmlize_to_blob(&p->aCol[2], pX->z+x, ofst - x);
      x = ofst;
      blob_append(&p->aCol[2], "<del>", 5);
      htmlize_to_blob(&p->aCol[2], pX->z+x, len);
      x += len;
      blob_append(&p->aCol[2], "</del>", 6);
    }
  }
  htmlize_to_blob(&p->aCol[2], pX->z+x,  pX->n - x);
  blob_append_char(&p->aCol[2], '\n');

  blob_appendf(&p->aCol[3],"%d\n", p->lnRight);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart2;
    int len = chng.a[i].iLen2;
    if( len ){
      htmlize_to_blob(&p->aCol[4], pY->z+x, ofst - x);
      x = ofst;
      blob_append(&p->aCol[4], "<ins>", 5);
      htmlize_to_blob(&p->aCol[4], pY->z+x, len);
      x += len;
      blob_append(&p->aCol[4], "</ins>", 6);
    }
  }
  htmlize_to_blob(&p->aCol[4], pY->z+x,  pY->n - x);
  blob_append_char(&p->aCol[4], '\n');
  p->nPending++;
}
static void dfunifiedEnd(DiffBuilder *p){
  dfunifiedFinishRow(p);
  blob_append(p->pOut, "</table>\n",-1);
  fossil_free(p);
}
static DiffBuilder *dfunifiedNew(Blob *pOut, DiffConfig *pCfg){
  DiffBuilder *p = fossil_malloc(sizeof(*p));
  p->xSkip = dfunifiedSkip;
  p->xCommon = dfunifiedCommon;
  p->xInsert = dfunifiedInsert;
  p->xDelete = dfunifiedDelete;
  p->xReplace = dfunifiedReplace;
  p->xEdit = dfunifiedEdit;
  p->xEnd = dfunifiedEnd;
  p->lnLeft = p->lnRight = 0;
  p->eState = 0;
  p->nPending = 0;
  p->pOut = pOut;
  if( pCfg->zLeftHash ){
    blob_appendf(pOut, "<table class=\"diff udiff\" data-lefthash=\"%s\">\n",
                pCfg->zLeftHash);
  }else{
    blob_append(pOut, "<table class=\"diff udiff\">\n", -1);
  }
  blob_init(&p->aCol[0], 0, 0);
  blob_init(&p->aCol[1], 0, 0);
  blob_init(&p->aCol[2], 0, 0);
  blob_init(&p->aCol[3], 0, 0);
  blob_init(&p->aCol[4], 0, 0);
  p->pCfg = pCfg;
  return p;
}
          appendDiffLine(pOut, " ", &B[b+j]);

/************************* DiffBuilderSplit  ******************************/
/* This formatter creates a side-by-side diff in HTML.  The output is a
** <table> with 5 columns:
**
**    1.  Line numbers for the first file.
**    2.  Text for the first file.
**    3.  The difference mark.  "<", ">", "|" or blank
**    4.  Line numbers for the second file.
**    5.  Text for the second file.
**
** The <ins> and <del> strategy is the same as for unified diff above.
** In fact, the same CSS can be used for both.
**
** Accumulator strategy:
**
**    *   Left line numbers are output directly to p->pOut
**    *   Left text accumulates in p->aCol[0].
**    *   Edit marks accumulates in p->aCol[1].
**    *   Right line numbers accumulate in p->aCol[2].
**    *   Right text accumulates in p->aCol[3].
**
** eState:
**    0   In common block
**    1   Have <del> on the left
**    2   Have <ins> on the right
**    3   Have <del> on left and <ins> on the right
*/
static void dfsplitChangeState(DiffBuilder *p, int newState){
  if( p->eState == newState ) return;
  if( (p->eState&1)==0 && (newState & 1)!=0 ){
    blob_append(p->pOut, "<del>", 5);
    blob_append(&p->aCol[0], "<del>", 5);
    p->eState |= 1;
  }else if( (p->eState&1)!=0 && (newState & 1)==0 ){
    blob_append(p->pOut, "</del>", 6);
    blob_append(&p->aCol[0], "</del>", 6);
    p->eState &= ~1;
  }
  if( (p->eState&2)==0 && (newState & 2)!=0 ){
    blob_append(&p->aCol[2], "<ins>", 5);
    blob_append(&p->aCol[3], "<ins>", 5);
    p->eState |= 2;
  }else if( (p->eState&2)!=0 && (newState & 2)==0 ){
    blob_append(&p->aCol[2], "</ins>", 6);
    blob_append(&p->aCol[3], "</ins>", 6);
    p->eState &= ~2;
  }
}
static void dfsplitFinishRow(DiffBuilder *p){
  if( blob_size(&p->aCol[0])==0 ) return;
  dfsplitChangeState(p, 0);
  blob_append(p->pOut, "</pre></td><td class=\"difftxt difftxtl\"><pre>\n",-1);
  blob_append_xfer(p->pOut, &p->aCol[0]);
  blob_append(p->pOut, "</pre></td><td class=\"diffsep\"><pre>\n", -1);
  blob_append_xfer(p->pOut, &p->aCol[1]);
  blob_append(p->pOut, "</pre></td><td class=\"diffln difflnr\"><pre>\n",-1);
  blob_append_xfer(p->pOut, &p->aCol[2]);
  blob_append(p->pOut, "</pre></td><td class=\"difftxt difftxtr\"><pre>\n",-1);
  blob_append_xfer(p->pOut, &p->aCol[3]);
  blob_append(p->pOut, "</pre></td></tr>\n", -1);
}
static void dfsplitStartRow(DiffBuilder *p){
  if( blob_size(&p->aCol[0])>0 ) return;
  blob_appendf(p->pOut,"<tr id=\"chunk%d\" class=\"diffchunk\">"
                       "<td class=\"diffln difflnl\"><pre>\n", ++nChunk);
  p->eState = 0;
}
static void dfsplitSkip(DiffBuilder *p, unsigned int n, int isFinal){
  dfsplitFinishRow(p);
  if( p->pCfg && p->pCfg->zLeftHash ){
    blob_appendf(p->pOut,
       "<tr class=\"diffskip\" data-startln=\"%d\" data-endln=\"%d\""
       " id=\"skip%xh%xi%x\">\n",
       p->lnLeft+1, p->lnLeft+n,
       nChunk,p->lnLeft,n);
  }else{
    blob_append(p->pOut, "<tr>", 4);
  }
  blob_append(p->pOut,
       "<td class=\"diffln difflnl difflne\">&#xfe19;</td>"
       "<td></td><td></td>"
       "<td class=\"diffln difflnr difflne\">&#xfe19;</td>"
       "<td/td></tr>\n", -1);
  p->lnLeft += n;
  p->lnRight += n;
}
static void dfsplitCommon(DiffBuilder *p, const DLine *pLine){
  dfsplitStartRow(p);
  dfsplitChangeState(p, 0);
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  htmlize_to_blob(&p->aCol[0], pLine->z, (int)pLine->n);
  blob_append_char(&p->aCol[0], '\n');
  blob_append_char(&p->aCol[1], '\n');
  blob_appendf(&p->aCol[2],"%d\n",p->lnRight);
  htmlize_to_blob(&p->aCol[3], pLine->z, (int)pLine->n);
  blob_append_char(&p->aCol[3], '\n');
}
static void dfsplitInsert(DiffBuilder *p, const DLine *pLine){
  dfsplitStartRow(p);
  dfsplitChangeState(p, 2);
  p->lnRight++;
  blob_append_char(p->pOut, '\n');
  blob_append_char(&p->aCol[0], '\n');
  blob_append(&p->aCol[1], "&gt;\n", -1);
  blob_appendf(&p->aCol[2],"%d\n", p->lnRight);
  blob_append(&p->aCol[3], "<ins>", 5);
  htmlize_to_blob(&p->aCol[3], pLine->z, (int)pLine->n);
  blob_append(&p->aCol[3], "</ins>\n", 7);
}
static void dfsplitDelete(DiffBuilder *p, const DLine *pLine){
  dfsplitStartRow(p);
  dfsplitChangeState(p, 1);
  p->lnLeft++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  blob_append(&p->aCol[0], "<del>", 5);
  htmlize_to_blob(&p->aCol[0], pLine->z, (int)pLine->n);
  blob_append(&p->aCol[0], "</del>\n", 7);
  blob_append(&p->aCol[1], "&lt;\n", -1);
  blob_append_char(&p->aCol[2],'\n');
  blob_append_char(&p->aCol[3],'\n');
}
static void dfsplitReplace(DiffBuilder *p, const DLine *pX, const DLine *pY){
  dfsplitStartRow(p);
  dfsplitChangeState(p, 3);
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  htmlize_to_blob(&p->aCol[0], pX->z,  pX->n);
  blob_append_char(&p->aCol[0], '\n');

  blob_append(&p->aCol[1], "|\n", 2);

  blob_appendf(&p->aCol[2],"%d\n", p->lnRight);

  htmlize_to_blob(&p->aCol[3], pY->z,  pY->n);
  blob_append_char(&p->aCol[3], '\n');
}
static void dfsplitEdit(DiffBuilder *p, const DLine *pX, const DLine *pY){
  int i;
  int x;
  LineChange chng;
  oneLineChange(pX, pY, &chng);
  dfsplitStartRow(p);
  dfsplitChangeState(p, 3);
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%d\n", p->lnLeft);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart1;
    int len = chng.a[i].iLen1;
    if( len ){
      htmlize_to_blob(&p->aCol[0], pX->z+x, ofst - x);
      x = ofst;
      if( chng.a[i].iLen2 ){
        blob_append(&p->aCol[0], "<del class='edit'>", -1);
      }else{
        blob_append(&p->aCol[0], "<del>", 5);
      }
      htmlize_to_blob(&p->aCol[0], pX->z+x, len);
      x += len;
      blob_append(&p->aCol[0], "</del>", 6);
    }
  }
  htmlize_to_blob(&p->aCol[0], pX->z+x,  pX->n - x);
  blob_append_char(&p->aCol[0], '\n');

  blob_append(&p->aCol[1], "|\n", 2);

  blob_appendf(&p->aCol[2],"%d\n", p->lnRight);
  for(i=x=0; i<chng.n; i++){
    int ofst = chng.a[i].iStart2;
    int len = chng.a[i].iLen2;
    if( len ){
      htmlize_to_blob(&p->aCol[3], pY->z+x, ofst - x);
      x = ofst;
      if( chng.a[i].iLen1 ){
        blob_append(&p->aCol[3], "<ins class='edit'>", -1);
      }else{
        blob_append(&p->aCol[3], "<ins>", 5);
      }
      htmlize_to_blob(&p->aCol[3], pY->z+x, len);
      x += len;
      blob_append(&p->aCol[3], "</ins>", 6);
    }
  }
  htmlize_to_blob(&p->aCol[3], pY->z+x,  pY->n - x);
  blob_append_char(&p->aCol[3], '\n');
}
static void dfsplitEnd(DiffBuilder *p){
  dfsplitFinishRow(p);
  blob_append(p->pOut, "</table>\n",-1);
  fossil_free(p);
}
static DiffBuilder *dfsplitNew(Blob *pOut, DiffConfig *pCfg){
  DiffBuilder *p = fossil_malloc(sizeof(*p));
  p->xSkip = dfsplitSkip;
  p->xCommon = dfsplitCommon;
  p->xInsert = dfsplitInsert;
  p->xDelete = dfsplitDelete;
  p->xReplace = dfsplitReplace;
  p->xEdit = dfsplitEdit;
  p->xEnd = dfsplitEnd;
  p->lnLeft = p->lnRight = 0;
  p->eState = 0;
  p->pOut = pOut;
  if( pCfg->zLeftHash ){
    blob_appendf(pOut,
      "<table class=\"diff splitdiff\" data-lefthash=\"%s\">\n",
      pCfg->zLeftHash);
  }else{
    blob_append(pOut, "<table class=\"diff splitdiff\">\n", -1);
  }
  blob_init(&p->aCol[0], 0, 0);
  blob_init(&p->aCol[1], 0, 0);
  blob_init(&p->aCol[2], 0, 0);
  blob_init(&p->aCol[3], 0, 0);
  blob_init(&p->aCol[4], 0, 0);
  p->pCfg = pCfg;
  return p;
}

/************************* DiffBuilderSbs  ******************************/
/* This formatter creates a side-by-side diff in text.
*/
static void dfsbsSkip(DiffBuilder *p, unsigned int n, int isFinal){
  if( (p->lnLeft || p->lnRight) && !isFinal ){
    blob_appendf(p->pOut, "%.*c\n", p->width*2 + 16, '.');
  }
  p->lnLeft += n;
  p->lnRight += n;
}

/*
** Append at least iMin characters (not bytes) and at most iMax characters
** from pX onto the into of p.
**
** This comment contains multibyte unicode characters (ü, Æ, ð) in order
** to test the ability of the diff code to handle such characters.
*/
static void sbs_append_chars(Blob *p, int iMin, int iMax, const DLine *pX){
  int i;
  const char *z = pX->z;
  for(i=0; i<iMax && i<pX->n; i++){
    char c = z[i];
    blob_append_char(p, c);
    if( (c&0xc0)==0x80 ){ iMin++; iMax++; }
  }
  while( i<iMin ){
    blob_append_char(p, ' ');
    i++;
  }
}

static void dfsbsCommon(DiffBuilder *p, const DLine *pLine){
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%6u ", p->lnLeft);
  sbs_append_chars(p->pOut, p->width, p->width, pLine);
  blob_appendf(p->pOut,"   %6u ", p->lnRight);
  sbs_append_chars(p->pOut, 0, p->width, pLine);
  blob_append_char(p->pOut, '\n');
}
static void dfsbsInsert(DiffBuilder *p, const DLine *pLine){
  p->lnRight++;
  blob_appendf(p->pOut,"%6s %*s > %6u ",
     "", p->width, "", p->lnRight);
  sbs_append_chars(p->pOut, 0, p->width, pLine);
  blob_append_char(p->pOut, '\n');
}
static void dfsbsDelete(DiffBuilder *p, const DLine *pLine){
  p->lnLeft++;
  blob_appendf(p->pOut,"%6u ", p->lnLeft);
  sbs_append_chars(p->pOut, p->width, p->width, pLine);
  blob_append(p->pOut," <\n", 3);
}
static void dfsbsEdit(DiffBuilder *p, const DLine *pX, const DLine *pY){
  p->lnLeft++;
  p->lnRight++;
  blob_appendf(p->pOut,"%6u ", p->lnLeft);
  sbs_append_chars(p->pOut, p->width, p->width, pX);
  blob_appendf(p->pOut, " | %6u ", p->lnRight);
  sbs_append_chars(p->pOut, 0, p->width, pY);
  blob_append_char(p->pOut, '\n');
}
static void dfsbsEnd(DiffBuilder *p){
  fossil_free(p);
}
static DiffBuilder *dfsbsNew(Blob *pOut, DiffConfig *pCfg){
  DiffBuilder *p = fossil_malloc(sizeof(*p));
  p->xSkip = dfsbsSkip;
  p->xCommon = dfsbsCommon;
  p->xInsert = dfsbsInsert;
  p->xDelete = dfsbsDelete;
  p->xReplace = dfsbsEdit;
  p->xEdit = dfsbsEdit;
  p->xEnd = dfsbsEnd;
  p->lnLeft = p->lnRight = 0;
  p->width = diff_width(pCfg);
  p->pOut = pOut;
  return p;
}
/****************************************************************************/
/*
** Return the number between 0 and 100 that is smaller the closer pA and
** pB match.  Return 0 for a perfect match.  Return 100 if pA and pB are
** completely different.
**
** The current algorithm is as follows:
**
** (1) Remove leading and trailing whitespace.
** (2) Truncate both strings to at most 250 characters
** (3) If the two strings have a common prefix, measure that prefix
** (4) Find the length of the longest common subsequence that is
**     at least 150% longer than the common prefix.
** (5) Longer common subsequences yield lower scores.
*/
static int match_dline(DLine *pA, DLine *pB){
  const char *zA;            /* Left string */
  const char *zB;            /* right string */
  int nA;                    /* Bytes in zA[] */
  int nB;                    /* Bytes in zB[] */
  int nMin;
  int nPrefix;
  int avg;                   /* Average length of A and B */
  int i, j, k;               /* Loop counters */
  int best = 0;              /* Longest match found so far */
  int score;                 /* Final score.  0..100 */
  unsigned char c;           /* Character being examined */
  unsigned char aFirst[256]; /* aFirst[X] = index in zB[] of first char X */
  unsigned char aNext[252];  /* aNext[i] = index in zB[] of next zB[i] char */

  zA = pA->z;
  if( pA->nw==0 && pA->n ){
    for(i=0; i<pA->n && diff_isspace(zA[i]); i++){}
    pA->indent = i;
    for(j=pA->n-1; j>i && diff_isspace(zA[j]); j--){}
    pA->nw = j - i + 1;
  }
  zA += pA->indent;
  nA = pA->nw;

  zB = pB->z;
  if( pB->nw==0 && pB->n ){
    for(i=0; i<pB->n && diff_isspace(zB[i]); i++){}
    pB->indent = i;
    for(j=pB->n-1; j>i && diff_isspace(zB[j]); j--){}
    pB->nw = j - i + 1;
  }
  zB += pB->indent;
  nB = pB->nw;

  if( nA>250 ) nA = 250;
  if( nB>250 ) nB = 250;
  avg = (nA+nB)/2;
  if( avg==0 ) return 0;
  nMin = nA;
  if( nB<nMin ) nMin = nB;
  if( nMin==0 ) return 68;
  for(nPrefix=0; nPrefix<nMin && zA[nPrefix]==zB[nPrefix]; nPrefix++){}
  best = 0;
  if( nPrefix>5 && nPrefix>nMin/2 ){
    best = nPrefix*3/2;
    if( best>=avg - 2 ) best = avg - 2;
  }
  if( nA==nB && memcmp(zA, zB, nA)==0 ) return 0;
  memset(aFirst, 0xff, sizeof(aFirst));
  zA--; zB--;   /* Make both zA[] and zB[] 1-indexed */
  for(i=nB; i>0; i--){
    c = (unsigned char)zB[i];
    aNext[i] = aFirst[c];
    aFirst[c] = i;
  }
  for(i=1; i<=nA-best; i++){
    c = (unsigned char)zA[i];
    for(j=aFirst[c]; j<nB-best && memcmp(&zA[i],&zB[j],best)==0; j = aNext[j]){
      int limit = minInt(nA-i, nB-j);
      for(k=best; k<=limit && zA[k+i]==zB[k+j]; k++){}
      if( k>best ) best = k;
    }
  }
  score = 5 + ((best>=avg) ? 0 : (avg - best)*95/avg);

#if 0
  fprintf(stderr, "A: [%.*s]\nB: [%.*s]\nbest=%d avg=%d score=%d\n",
  nA, zA+1, nB, zB+1, best, avg, score);
#endif

  /* Return the result */
  return score;
}

/*
** COMMAND:  test-line-match
** Usage: %fossil test-line-match STRING1 STRING2
**
** Return a score from 0 to 100 that is how similar STRING1 is to
** STRING2.  Smaller numbers mean more similar.  0 is an exact match.
**
** This command is used to test to match_dline() function in the
** internal Fossil diff logic.
*/
void test_dline_match(void){
  DLine a, b;
  int x;
  if( g.argc!=4 ) usage("STRING1 STRING2");
  a.z = g.argv[2];
  a.n = (int)strlen(a.z);
  b.z = g.argv[3];
  b.n = (int)strlen(b.z);
  x = match_dline(&a, &b);
  fossil_print("%d\n", x);
}

/* Forward declarations for recursion */
static unsigned char *diffBlockAlignment(
  DLine *aLeft, int nLeft,     /* Text on the left */
  DLine *aRight, int nRight,   /* Text on the right */
  DiffConfig *pCfg,            /* Configuration options */
  int *pNResult                /* OUTPUT: Bytes of result */
);
static void longestCommonSequence(
  DContext *p,               /* Two files being compared */
  int iS1, int iE1,          /* Range of lines in p->aFrom[] */
  int iS2, int iE2,          /* Range of lines in p->aTo[] */
  int *piSX, int *piEX,      /* Write p->aFrom[] common segment here */
  int *piSY, int *piEY       /* Write p->aTo[] common segment here */
);

/*
** Make a copy of a list of nLine DLine objects from one array to
** another.  Hash the new array to ignore whitespace.
*/
static void diffDLineXfer(
  DLine *aTo,
  const DLine *aFrom,
  int nLine
){
  int i, j, k;
  u64 h, h2;
  for(i=0; i<nLine; i++) aTo[i].iHash = 0;
  for(i=0; i<nLine; i++){
    const char *z = aFrom[i].z;
    int n = aFrom[i].n;
    for(j=0; j<n && diff_isspace(z[j]); j++){}
    aTo[i].z = &z[j];
    for(k=aFrom[i].n; k>j && diff_isspace(z[k-1]); k--){}
    aTo[i].n = n = k-j;
    aTo[i].indent = 0;
    aTo[i].nw = 0;
    for(h=0; j<k; j++){
      char c = z[j];
      if( !diff_isspace(c) ){
        h = (h^c)*9000000000000000041LL;
      }
    }
    aTo[i].h = h = ((h%281474976710597LL)<<LENGTH_MASK_SZ) | n;
    h2 = h % nLine;
    aTo[i].iNext = aTo[h2].iHash;
    aTo[h2].iHash = i+1;
  }
}


/*
** For a difficult diff-block alignment that was originally for
** the default consider-all-whitespace algorithm, try to find the
** longest common subsequence between the two blocks that involves
** only whitespace changes.
*/
static unsigned char *diffBlockAlignmentIgnoreSpace(
  DLine *aLeft, int nLeft,     /* Text on the left */
  DLine *aRight, int nRight,   /* Text on the right */
  DiffConfig *pCfg,            /* Configuration options */
  int *pNResult                /* OUTPUT: Bytes of result */
){
  DContext dc;
  int iSX, iEX;                /* Start and end of LCS on the left */
  int iSY, iEY;                /* Start and end of the LCS on the right */
  unsigned char *a1, *a2;
  int n1, n2, nLCS;

  dc.aEdit = 0;
  dc.nEdit = 0;
  dc.nEditAlloc = 0;
  dc.nFrom = nLeft;
  dc.nTo = nRight;
  dc.xDiffer = compare_dline_ignore_allws;
  dc.aFrom = fossil_malloc( sizeof(DLine)*(nLeft+nRight) );
  dc.aTo = &dc.aFrom[dc.nFrom];
  diffDLineXfer(dc.aFrom, aLeft, nLeft);
  diffDLineXfer(dc.aTo, aRight, nRight);
  longestCommonSequence(&dc,0,nLeft,0,nRight,&iSX,&iEX,&iSY,&iEY);
  fossil_free(dc.aFrom);
  nLCS = iEX - iSX;
  if( nLCS<5 ) return 0;   /* No good LCS was found */

  if( pCfg->diffFlags & DIFF_DEBUG ){
     fossil_print("   LCS size=%d\n"
                  "     [%.*s]\n"
                  "     [%.*s]\n",
                  nLCS, aLeft[iSX].n, aLeft[iSX].z,
                  aLeft[iEX-1].n, aLeft[iEX-1].z);
  }

  a1 = diffBlockAlignment(aLeft,iSX,aRight,iSY,pCfg,&n1);
  a2 = diffBlockAlignment(aLeft+iEX, nLeft-iEX,
                          aRight+iEY, nRight-iEY,
                          pCfg, &n2);
  a1 = fossil_realloc(a1, n1+nLCS+n2);
  memcpy(a1+n1+nLCS,a2,n2);
  memset(a1+n1,3,nLCS);
  fossil_free(a2);
  *pNResult = n1+n2+nLCS;
  return a1;
}


/*
** This is a helper route for diffBlockAlignment().  In this case,
** a very large block is encountered that might be too expensive to
** use the O(N*N) Wagner edit distance algorithm.  So instead, this
** block implements a less-precise but faster O(N*logN) divide-and-conquer
** approach.
*/
static unsigned char *diffBlockAlignmentDivideAndConquer(
  DLine *aLeft, int nLeft,     /* Text on the left */
  DLine *aRight, int nRight,   /* Text on the right */
  DiffConfig *pCfg,            /* Configuration options */
  int *pNResult                /* OUTPUT: Bytes of result */
){
  DLine *aSmall;               /* The smaller of aLeft and aRight */
  DLine *aBig;                 /* The larger of aLeft and aRight */
  int nSmall, nBig;            /* Size of aSmall and aBig.  nSmall<=nBig */
  int iDivSmall, iDivBig;      /* Divider point for aSmall and aBig */
  int iDivLeft, iDivRight;     /* Divider point for aLeft and aRight */
  unsigned char *a1, *a2;      /* Results of the alignments on two halves */
  int n1, n2;                  /* Number of entries in a1 and a2 */
  int score, bestScore;        /* Score and best score seen so far */
  int i;                       /* Loop counter */

  if( nLeft>nRight ){
    aSmall = aRight;
    nSmall = nRight;
    aBig = aLeft;
    nBig = nLeft;
  }else{
    aSmall = aLeft;
    nSmall = nLeft;
    aBig = aRight;
    nBig = nRight;
  }
  iDivBig = nBig/2;
  iDivSmall = nSmall/2;

  if( pCfg->diffFlags & DIFF_DEBUG ){
    fossil_print("  Divide at [%.*s]\n",
                 aBig[iDivBig].n, aBig[iDivBig].z);
  }

  bestScore = 10000;
  for(i=0; i<nSmall; i++){
    score = match_dline(aBig+iDivBig, aSmall+i) + abs(i-nSmall/2)*2;
    if( score<bestScore ){
      bestScore = score;
      iDivSmall = i;
    }
  }
  if( aSmall==aRight ){
    iDivRight = iDivSmall;
    iDivLeft = iDivBig;
  }else{
    iDivRight = iDivBig;
    iDivLeft = iDivSmall;
  }
  a1 = diffBlockAlignment(aLeft,iDivLeft,aRight,iDivRight,pCfg,&n1);
  a2 = diffBlockAlignment(aLeft+iDivLeft, nLeft-iDivLeft,
                          aRight+iDivRight, nRight-iDivRight,
                          pCfg, &n2);
  a1 = fossil_realloc(a1, n1+n2 );
  memcpy(a1+n1,a2,n2);
  fossil_free(a2);
  *pNResult = n1+n2;
  return a1;
}


/*
** The threshold at which diffBlockAlignment transitions from the
** O(N*N) Wagner minimum-edit-distance algorithm to a less process
** O(NlogN) divide-and-conquer approach.
*/
#define DIFF_ALIGN_MX  1225

/*
** There is a change block in which nLeft lines of text on the left are
** converted into nRight lines of text on the right.  This routine computes
** how the lines on the left line up with the lines on the right.
**
** The return value is a buffer of unsigned characters, obtained from
** fossil_malloc().  (The caller needs to free the return value using
** fossil_free().)  Entries in the returned array have values as follows:
**
**    1.  Delete the next line of pLeft.
**    2.  Insert the next line of pRight.
**    3.  The next line of pLeft changes into the next line of pRight.
**    4.  Delete one line from pLeft and add one line to pRight.
**
** The length of the returned array will be at most nLeft+nRight bytes.
** If the first bytes is 4,  that means we could not compute reasonable
** alignment between the two blocks.
**
** Algorithm:  Wagner's minimum edit-distance algorithm, modified by
** adding a cost to each match based on how well the two rows match
** each other.  Insertion and deletion costs are 50.  Match costs
** are between 0 and 100 where 0 is a perfect match 100 is a complete
** mismatch.
*/
static unsigned char *diffBlockAlignment(
  DLine *aLeft, int nLeft,     /* Text on the left */
  DLine *aRight, int nRight,   /* Text on the right */
  DiffConfig *pCfg,            /* Configuration options */
  int *pNResult                /* OUTPUT: Bytes of result */
){
  int i, j, k;                 /* Loop counters */
  int *a;                      /* One row of the Wagner matrix */
  int *pToFree;                /* Space that needs to be freed */
  unsigned char *aM;           /* Wagner result matrix */
  int aBuf[100];               /* Stack space for a[] if nRight not to big */

  if( nLeft==0 ){
    aM = fossil_malloc( nRight + 2 );
    memset(aM, 2, nRight);
    *pNResult = nRight;
    return aM;
  }
  if( nRight==0 ){
    aM = fossil_malloc( nLeft + 2 );
    memset(aM, 1, nLeft);
    *pNResult = nLeft;
    return aM;
  }

  if( pCfg->diffFlags & DIFF_DEBUG ){
    fossil_print("BlockAlignment:\n   [%.*s] + %d\n   [%.*s] + %d\n",
                 aLeft[0].n, aLeft[0].z, nLeft,
                 aRight[0].n, aRight[0].z, nRight);
  }

  /* For large alignments, try to use alternative algorithms that are
  ** faster than the O(N*N) Wagner edit distance.
  */
  if( (i64)nLeft*(i64)nRight>DIFF_ALIGN_MX
   && (pCfg->diffFlags & DIFF_SLOW_SBS)==0
  ){
    if( (pCfg->diffFlags & DIFF_IGNORE_ALLWS)==0 ){
      unsigned char *aRes;
      aRes = diffBlockAlignmentIgnoreSpace(
                 aLeft, nLeft,aRight, nRight,pCfg,pNResult);
      if( aRes ) return aRes;
    }
    return diffBlockAlignmentDivideAndConquer(
                 aLeft, nLeft,aRight, nRight,pCfg,pNResult);
  }

  /* If we reach this point, we will be doing an O(N*N) Wagner minimum
  ** edit distance to compute the alignment.
  */
  if( nRight < count(aBuf)-1 ){
    pToFree = 0;
    a = aBuf;
  }else{
    a = pToFree = fossil_malloc( sizeof(a[0])*(nRight+1) );
  }
  aM = fossil_malloc( (nLeft+1)*(nRight+1) );


  /* Compute the best alignment */
  for(i=0; i<=nRight; i++){
    aM[i] = 2;
    a[i] = i*50;
  }
  aM[0] = 0;
  for(j=1; j<=nLeft; j++){
    int p = a[0];
    a[0] = p+50;
    aM[j*(nRight+1)] = 1;
    for(i=1; i<=nRight; i++){
      int m = a[i-1]+50;
      int d = 2;
      if( m>a[i]+50 ){
        m = a[i]+50;
        d = 1;
      }
      if( m>p ){
        int score = match_dline(&aLeft[j-1], &aRight[i-1]);
        if( (score<=90 || (i<j+1 && i>j-1)) && m>p+score ){
          m = p+score;
          d = 3 | score*4;
        }
      }
      p = a[i];
      a[i] = m;
      aM[j*(nRight+1)+i] = d;
    }
  }

  /* Compute the lowest-cost path back through the matrix */
  i = nRight;
  j = nLeft;
  k = (nRight+1)*(nLeft+1)-1;
  while( i+j>0 ){
    unsigned char c = aM[k];
    if( c>=3 ){
      assert( i>0 && j>0 );
      i--;
      j--;
      aM[k] = 3;
    }else if( c==2 ){
      assert( i>0 );
      i--;
    }else{
      assert( j>0 );
      j--;
    }
    k--;
    aM[k] = aM[j*(nRight+1)+i];
  }
  k++;
  i = (nRight+1)*(nLeft+1) - k;
  memmove(aM, &aM[k], i);
  *pNResult = i;

  /* Return the result */
  fossil_free(pToFree);
  return aM;
}

/*
** R[] is an array of six integer, two COPY/DELETE/INSERT triples for a
** pair of adjacent differences.  Return true if the gap between these
** two differences is so small that they should be rendered as a single
** edit.
*/
static int smallGap(const int *R, int ma, int mb){
  int m = R[3];
  ma += R[4] + m;
  mb += R[5] + m;
  if( ma*mb>DIFF_ALIGN_MX ) return 0;
  return m<=2 || m<=(R[1]+R[2]+R[4]+R[5])/8;
}

/*
** Format a diff using a DiffBuilder object
*/
static void formatDiff(
  DContext *p,           /* The computed diff */
  DiffConfig *pCfg,      /* Configuration options */
  DiffBuilder *pBuilder  /* The formatter object */
){
  DLine *A;              /* Left side of the diff */
  DLine *B;              /* Right side of the diff */
  unsigned int a = 0;    /* Index of next line in A[] */
  unsigned int b = 0;    /* Index of next line in B[] */
  const int *R;          /* Array of COPY/DELETE/INSERT triples */
  unsigned int r;        /* Index into R[] */
  unsigned int nr;       /* Number of COPY/DELETE/INSERT triples to process */
  unsigned int mxr;      /* Maximum value for r */
  unsigned int i, j;     /* Loop counters */
  unsigned int m, ma, mb;/* Number of lines to output */
  signed int skip = 0;   /* Number of lines to skip */
  unsigned int nContext; /* Lines of context above and below each change */

  nContext = diff_context_lines(pCfg);
  A = p->aFrom;
  B = p->aTo;
  R = p->aEdit;
  mxr = p->nEdit;
  while( mxr>2 && R[mxr-1]==0 && R[mxr-2]==0 ){ mxr -= 3; }

  for(r=0; r<mxr; r += 3*nr){
    /* Figure out how many triples to show in a single block */
    for(nr=1; 3*nr<mxr && R[r+nr*3]>0 && R[r+nr*3]<(int)nContext*2; nr++){}

    /* If there is a regex, skip this block (generate no diff output)
    ** if the regex matches or does not match both insert and delete.
    ** Only display the block if one side matches but the other side does
    ** not.
    */
    if( pCfg->pRe ){
      int hideBlock = 1;
      int xa = a, xb = b;
      for(i=0; hideBlock && i<nr; i++){
        int c1, c2;
        xa += R[r+i*3];
        xb += R[r+i*3];
        c1 = re_dline_match(pCfg->pRe, &A[xa], R[r+i*3+1]);
        c2 = re_dline_match(pCfg->pRe, &B[xb], R[r+i*3+2]);
        hideBlock = c1==c2;
        xa += R[r+i*3+1];
        xb += R[r+i*3+2];
      }
      if( hideBlock ){
        a = xa;
        b = xb;
        continue;
      }
    }

    /* Figure out how many lines of A and B are to be displayed
    ** for this change block.
    */
    if( R[r]>(int)nContext ){
      skip = R[r] - nContext;
    }else{
      skip = 0;
    }
    /* Show the initial common area */
    a += skip;
    b += skip;
    m = R[r] - skip;
    if( r ) skip -= nContext;
    if( skip>0 ){
      if( skip<(int)nContext ){
        /* If the amount to skip is less that the context band, then
        ** go ahead and show the skip band as it is not worth eliding */
        for(j=0; (int)j<skip; j++){
          pBuilder->xCommon(pBuilder, &A[a+j-skip]);
        }
      }else{
        pBuilder->xSkip(pBuilder, skip, 0);
      }
    }
    for(j=0; j<m; j++){
      pBuilder->xCommon(pBuilder, &A[a+j]);
    }
    a += m;
    b += m;

    /* Show the differences */
    for(i=0; i<nr; i++){
      int nAlign;
      unsigned char *alignment;
      ma = R[r+i*3+1];   /* Lines on left but not on right */
      mb = R[r+i*3+2];   /* Lines on right but not on left */

      /* Try merging the current block with subsequent blocks, if the
      ** subsequent blocks are nearby and there result isn't too big.
      */
      while( i<nr-1 && smallGap(&R[r+i*3],ma,mb) ){
        i++;
        m = R[r+i*3];
        ma += R[r+i*3+1] + m;
        mb += R[r+i*3+2] + m;
      }

      /* Try to find an alignment for the lines within this one block */
      alignment = diffBlockAlignment(&A[a], ma, &B[b], mb, pCfg, &nAlign);

      for(j=0; ma+mb>0; j++){
        assert( (int)j<nAlign );
        switch( alignment[j] ){
          case 1: {
            /* Delete one line from the left */
            pBuilder->xDelete(pBuilder, &A[a]);
            ma--;
            a++;
            break;
          }
          case 2: {
            /* Insert one line on the right */
            pBuilder->xInsert(pBuilder, &B[b]);
            assert( mb>0 );
            mb--;
            b++;
            break;
          }
          case 3: {
            /* The left line is changed into the right line */
            if( p->xDiffer(&A[a], &B[b])==0 ){
              pBuilder->xCommon(pBuilder, &A[a]);
            }else{
              pBuilder->xEdit(pBuilder, &A[a], &B[b]);
            }
            assert( ma>0 && mb>0 );
            ma--;
            mb--;
            a++;
            b++;
            break;
          }
          case 4: {
            /* Delete from left then separately insert on the right */
            pBuilder->xReplace(pBuilder, &A[a], &B[b]);
            ma--;
            a++;
            mb--;
            b++;
            break;
          }
        }
      }
      assert( nAlign==(int)j );
      fossil_free(alignment);
      if( i<nr-1 ){
        m = R[r+i*3+3];
        for(j=0; j<m; j++){
          pBuilder->xCommon(pBuilder, &A[a+j]);
        }
        b += m;
        a += m;
      }
    }

    /* Show the final common area */
    assert( nr==i );
    m = R[r+nr*3];
    if( m>nContext ) m = nContext;
    for(j=0; j<m; j++){
      appendDiffLine(pOut, " ", &B[b+j]);
    }
  }
    for(j=0; j<m && j<nContext; j++){
      pBuilder->xCommon(pBuilder, &A[a+j]);
    }
  }
  if( R[r]>(int)nContext ){
    pBuilder->xSkip(pBuilder, R[r] - nContext, 1);
  }
  pBuilder->xEnd(pBuilder);
}


/*
** Compute the optimal longest common subsequence (LCS) using an
** exhaustive search.  This version of the LCS is only used for
** shorter input strings since runtime is O(N*N) where N is the
** input string length.
*/
static void optimalLCS(
  DContext *p,               /* Two files being compared */
  int iS1, int iE1,          /* Range of lines in p->aFrom[] */
  int iS2, int iE2,          /* Range of lines in p->aTo[] */
  int *piSX, int *piEX,      /* Write p->aFrom[] common segment here */
  int *piSY, int *piEY       /* Write p->aTo[] common segment here */
){
  int mxLength = 0;          /* Length of longest common subsequence */
  int i, j;                  /* Loop counters */
  int k;                     /* Length of a candidate subsequence */
  int iSXb = iS1;            /* Best match so far */
  int iSYb = iS2;            /* Best match so far */

  for(i=iS1; i<iE1-mxLength; i++){
    for(j=iS2; j<iE2-mxLength; j++){
      if( p->xDiffer(&p->aFrom[i], &p->aTo[j]) ) continue;
      if( mxLength && p->xDiffer(&p->aFrom[i+mxLength], &p->aTo[j+mxLength]) ){
        continue;
      }
      k = 1;
      while( i+k<iE1 && j+k<iE2 && p->xDiffer(&p->aFrom[i+k],&p->aTo[j+k])==0 ){
        k++;
      }
      if( k>mxLength ){
        iSXb = i;
        iSYb = j;
        mxLength = k;
      }
    }
  }
  *piSX = iSXb;
  *piEX = iSXb + mxLength;
  *piSY = iSYb;
  *piEY = iSYb + mxLength;
}

/*
** Compare two blocks of text on lines iS1 through iE1-1 of the aFrom[]
** file and lines iS2 through iE2-1 of the aTo[] file.  Locate a sequence
** of lines in these two blocks that are exactly the same.  Return
** the bounds of the matching sequence.
**
** If there are two or more possible answers of the same length, the
** returned sequence should be the one closest to the center of the
** input range.
**
** Ideally, the common sequence should be the longest possible common
** sequence.  However, an exact computation of LCS is O(N*N) which is
** way too slow for larger files.  So this routine uses an O(N)
** heuristic approximation based on hashing that usually works about
** as well.  But if the O(N) algorithm doesn't get a good solution
** and N is not too large, we fall back to an exact solution by
** calling optimalLCS().
*/
static void longestCommonSequence(
  DContext *p,               /* Two files being compared */
  int iS1, int iE1,          /* Range of lines in p->aFrom[] */
  int iS2, int iE2,          /* Range of lines in p->aTo[] */
  int *piSX, int *piEX,      /* Write p->aFrom[] common segment here */
  int *piSY, int *piEY       /* Write p->aTo[] common segment here */
){
  double bestScore = -1e30;  /* Best score seen so far */
  int i, j;                  /* Loop counters */
  int i, j, k;               /* Loop counters */
  int n;                     /* Loop limit */
  DLine *pA, *pB;            /* Pointers to lines */
  int iSX, iSY, iEX, iEY;    /* Current match */
  double score;              /* Current score */
  int skew;                  /* How lopsided is the match */
  int dist;                  /* Distance of match from center */
  int mid;                   /* Center of the span */
  int skew = 0;              /* How lopsided is the match */
  int dist = 0;              /* Distance of match from center */
  int mid;                   /* Center of the chng */
  int iSXb, iSYb, iEXb, iEYb;   /* Best match so far */
  int iSXp, iSYp, iEXp, iEYp;   /* Previous match */
  sqlite3_int64 bestScore;      /* Best score so far */
  sqlite3_int64 score;          /* Score for current candidate LCS */
  int span;                     /* combined width of the input sequences */
  int cutoff = 4;            /* Max hash chain entries to follow */
  int nextCutoff = -1;       /* Value of cutoff for next iteration */

  span = (iE1 - iS1) + (iE2 - iS2);
  bestScore = -9223300000*(sqlite3_int64)1000000000;
  score = 0;
  iSXb = iSXp = iS1;
  iEXb = iEXp = iS1;
  iSYb = iSYp = iS2;
  iEYb = iEYp = iS2;
  mid = (iE1 + iS1)/2;
  do{
    nextCutoff = 0;
    for(i=iS1; i<iE1; i++){
      int limit = 0;
      j = p->aTo[p->aFrom[i].h % p->nTo].iHash;
      while( j>0
        && (j-1<iS2 || j>=iE2 || p->xDiffer(&p->aFrom[i], &p->aTo[j-1]))
      ){
        if( limit++ > cutoff ){
          j = 0;
          nextCutoff = cutoff*4;
          break;
        }
        j = p->aTo[j-1].iNext;
      }
      if( j==0 ) continue;
      assert( i>=iSXb && i>=iSXp );
      if( i<iEXb && j>=iSYb && j<iEYb ) continue;
      if( i<iEXp && j>=iSYp && j<iEYp ) continue;
      iSX = i;
      iSY = j-1;
      pA = &p->aFrom[iSX-1];
      pB = &p->aTo[iSY-1];
      n = minInt(iSX-iS1, iSY-iS2);
      for(k=0; k<n && p->xDiffer(pA,pB)==0; k++, pA--, pB--){}
      iSX -= k;
      iSY -= k;
      iEX = i+1;
      iEY = j;
      pA = &p->aFrom[iEX];
      pB = &p->aTo[iEY];
      n = minInt(iE1-iEX, iE2-iEY);
      for(k=0; k<n && p->xDiffer(pA,pB)==0; k++, pA++, pB++){}
      iEX += k;
      iEY += k;
      skew = (iSX-iS1) - (iSY-iS2);
      if( skew<0 ) skew = -skew;
      dist = (iSX+iEX)/2 - mid;
      if( dist<0 ) dist = -dist;
      score = (iEX - iSX)*(sqlite3_int64)span - (skew + dist);
      if( score>bestScore ){
        bestScore = score;
        iSXb = iSX;
        iSYb = iSY;
        iEXb = iEX;
        iEYb = iEY;
      }else if( iEX>iEXp ){
        iSXp = iSX;
        iSYp = iSY;
        iEXp = iEX;
        iEYp = iEY;
      }
    }
  }while( iSXb==iEXb && nextCutoff && (cutoff=nextCutoff)<=64 );
  if( iSXb==iEXb && (sqlite3_int64)(iE1-iS1)*(iE2-iS2)<2500 ){
    /* If no common sequence is found using the hashing heuristic and
    ** the input is not too big, use the expensive exact solution */
    optimalLCS(p, iS1, iE1, iS2, iE2, piSX, piEX, piSY, piEY);
  }else{
    *piSX = iSXb;
    *piSY = iSYb;
    *piEX = iEXb;
    *piEY = iEYb;
  }
}

/*
** Expand the size of aEdit[] array to hold at least nEdit elements.
*/
static void expandEdit(DContext *p, int nEdit){
  p->aEdit = fossil_realloc(p->aEdit, nEdit*sizeof(int));
  p->nEditAlloc = nEdit;
}

/*
** Append a new COPY/DELETE/INSERT triple.
*/
static void appendTriple(DContext *p, int nCopy, int nDel, int nIns){
  /* printf("APPEND %d/%d/%d\n", nCopy, nDel, nIns); */
  if( p->nEdit>=3 ){
    if( p->aEdit[p->nEdit-1]==0 ){
      if( p->aEdit[p->nEdit-2]==0 ){
        p->aEdit[p->nEdit-3] += nCopy;
        p->aEdit[p->nEdit-2] += nDel;
        p->aEdit[p->nEdit-1] += nIns;
        return;
      }
      if( nCopy==0 ){
        p->aEdit[p->nEdit-2] += nDel;
        p->aEdit[p->nEdit-1] += nIns;
        return;
      }
    }
    if( nCopy==0 && nDel==0 ){
      p->aEdit[p->nEdit-1] += nIns;
      return;
    }
  }
  if( p->nEdit+3>p->nEditAlloc ){
    expandEdit(p, p->nEdit*2 + 15);
    if( p->aEdit==0 ) return;
  }
  p->aEdit[p->nEdit++] = nCopy;
  p->aEdit[p->nEdit++] = nDel;
  p->aEdit[p->nEdit++] = nIns;
}

/*
** A common subsequence between p->aFrom and p->aTo has been found.
** This routine tries to judge if the subsequence really is a valid
** match or rather is just an artifact of an indentation change.
**
** Return non-zero if the subsequence is valid.  Return zero if the
** subsequence seems likely to be an editing artifact and should be
** ignored.
**
** This routine is a heuristic optimization intended to give more
** intuitive diff results following an indentation change it code that
** is formatted similarly to C/C++, Javascript, Go, TCL, and similar
** languages that use {...} for nesting.  A correct diff is computed
** even if this routine always returns true (non-zero).  But sometimes
** a more intuitive diff can result if this routine returns false.
**
** The subsequences consists of the rows iSX through iEX-1 (inclusive)
** in p->aFrom[].  The total sequences is iS1 through iE1-1 (inclusive)
** of p->aFrom[].
**
** Example where this heuristic is useful, see the diff at
** https://www.sqlite.org/src/fdiff?v1=0e79dd15cbdb4f48&v2=33955a6fd874dd97
**
** See also discussion at https://fossil-scm.org/forum/forumpost/9ba3284295
**
** ALGORITHM (subject to change and refinement):
**
**    1.  If the subsequence is larger than 1/7th of the original span,
**        then consider it valid.  --> return 1
**
**    2.  If no lines of the subsequence contains more than one
**        non-whitespace character,  --> return 0
**
**    3.  If any line of the subsequence contains more than one non-whitespace
**        character and is unique across the entire sequence after ignoring
**        leading and trailing whitespace   --> return 1
**
**    4.  Otherwise, it is potentially an artifact of an indentation
**        change. --> return 0
*/
static int likelyNotIndentChngArtifact(
  DContext *p,     /* The complete diff context */
  int iS1,         /* Start of the main segment */
  int iSX,         /* Start of the subsequence */
  int iEX,         /* First row past the end of the subsequence */
  int iE1          /* First row past the end of the main segment */
){
  int i, j, n;

  /* Rule (1) */
  if( (iEX-iSX)*7 >= (iE1-iS1) ) return 1;

  /* Compute DLine.indent and DLine.nw for all lines of the subsequence.
  ** If no lines contain more than one non-whitespace character return
  ** 0 because the subsequence could be due to an indentation change.
  ** Rule (2).
  */
  n = 0;
  for(i=iSX; i<iEX; i++){
    DLine *pA = &p->aFrom[i];
    if( pA->nw==0 && pA->n ){
      const char *zA = pA->z;
      const int nn = pA->n;
      int ii, jj;
      for(ii=0; ii<nn && diff_isspace(zA[ii]); ii++){}
      pA->indent = ii;
      for(jj=nn-1; jj>ii && diff_isspace(zA[jj]); jj--){}
      pA->nw = jj - ii + 1;
    }
    if( pA->nw>1 ) n++;
  }
  if( n==0 ) return 0;

  /* Compute DLine.indent and DLine.nw for the entire sequence */
  for(i=iS1; i<iE1; i++){
    int limit = 0;
    DLine *pA;
    j = p->aTo[p->aFrom[i].h % p->nTo].iHash;
    while( j>0 
      && (j-1<iS2 || j>=iE2 || !same_dline(&p->aFrom[i], &p->aTo[j-1]))
    ){
    if( i==iSX ){
      if( limit++ > 10 ){
        j = 0;
        break;
      }
      j = p->aTo[j-1].iNext;
      i = iEX;
      if( i>=iE1 ) break;
    }
    pA = &p->aFrom[i];
    if( pA->nw==0 && pA->n ){
      const char *zA = pA->z;
      const int nn = pA->n;
      int ii, jj;
      for(ii=0; ii<nn && diff_isspace(zA[ii]); ii++){}
      pA->indent = ii;
      for(jj=nn-1; jj>ii && diff_isspace(zA[jj]); jj--){}
      pA->nw = jj - ii + 1;
    }
    if( j==0 ) continue;
    assert( i>=iSXb && i>=iSXp );
    if( i<iEXb && j>=iSYb && j<iEYb ) continue;
    if( i<iEXp && j>=iSYp && j<iEYp ) continue;
    iSX = i;
    iSY = j-1;
    while( iSX>iS1 && iSY>iS2 && same_dline(&p->aFrom[iSX-1],&p->aTo[iSY-1]) ){
      iSX--;
      iSY--;
    }
  }
    iEX = i+1;
    iEY = j;
    while( iEX<iE1 && iEY<iE2 && same_dline(&p->aFrom[iEX],&p->aTo[iEY]) ){
      iEX++;
      iEY++;
    }
    skew = (iSX-iS1) - (iSY-iS2);
    if( skew<0 ) skew = -skew;

  /* Check to see if any subsequence line that has more than one
  ** non-whitespace character is unique across the entire sequence.
    dist = (iSX+iEX)/2 - mid;
    if( dist<0 ) dist = -dist;
    score = (iEX - iSX) - 0.05*skew - 0.05*dist;
    if( score>bestScore ){
      bestScore = score;
      iSXb = iSX;
      iSYb = iSY;
      iEXb = iEX;
  ** Rule (3)
  */
  for(i=iSX; i<iEX; i++){
    const char *z = p->aFrom[i].z + p->aFrom[i].indent;
    const int nw = p->aFrom[i].nw;
      iEYb = iEY;
    }else{
      iSXp = iSX;
      iSYp = iSY;
      iEXp = iEX;
      iEYp = iEY;
    if( nw<=1 ) continue;
    for(j=iS1; j<iSX; j++){
      if( p->aFrom[j].nw!=nw ) continue;
      if( memcmp(p->aFrom[j].z+p->aFrom[j].indent,z,nw)==0 ) break;
    }
    if( j<iSX ) continue;
    for(j=iEX; j<iE1; j++){
      if( p->aFrom[j].nw!=nw ) continue;
      if( memcmp(p->aFrom[j].z+p->aFrom[j].indent,z,nw)==0 ) break;
    }
    if( j>=iE1 ) break;
  }
  *piSX = iSXb;
  *piSY = iSYb;
  *piEX = iEXb;
  return i<iEX;
  *piEY = iEYb;
  /* printf("LCS(%d..%d/%d..%d) = %d..%d/%d..%d\n", 
     iS1, iE1, iS2, iE2, *piSX, *piEX, *piSY, *piEY);  */
}


/*
** Do a single step in the difference.  Compute a sequence of
** copy/delete/insert steps that will convert lines iS1 through iE1-1 of
** the input into lines iS2 through iE2-1 of the output and write
** that sequence into the difference context.
**
391
392
393
394
395
396
397
398
399




400
401
402
403
404
405
406
2720
2721
2722
2723
2724
2725
2726


2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737







-
-
+
+
+
+







    appendTriple(p, 0, iE1-iS1, 0);
    return;
  }

  /* Find the longest matching segment between the two sequences */
  longestCommonSequence(p, iS1, iE1, iS2, iE2, &iSX, &iEX, &iSY, &iEY);

  if( iEX>iSX ){
    /* A common segement has been found.
  if( iEX>iSX+5
   || (iEX>iSX && likelyNotIndentChngArtifact(p,iS1,iSX,iEX,iE1) )
  ){
    /* A common segment has been found.
    ** Recursively diff either side of the matching segment */
    diff_step(p, iS1, iSX, iS2, iSY);
    if( iEX>iSX ){
      appendTriple(p, iEX - iSX, 0, 0);
    }
    diff_step(p, iEX, iE1, iEY, iE2);
  }else{
427
428
429
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431
432
433
434

435
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439

440
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457
458
459



































460
461
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467


















































































































































468
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478

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481
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483
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485
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497









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515















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524
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528
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530


531
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538
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540
















541



542
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544
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546


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562
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568
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579


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681
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721
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725
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730
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735




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747

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791
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2758
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2770
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2826
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2980
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2985
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2990
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2999
3000
3001


3002
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3007
3008
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3010
3011
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3020
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3023
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3051
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3103
3104
3105
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3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119

3120






3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
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3132
3133
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3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157




3158
3159
3160
3161
3162
3163
3164
3165
3166
3167


3168
3169
3170
3171



3172
3173
3174
3175
3176
3177
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3180
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3189
3190
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3196
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3199
3200
3201
3202
3203
3204

3205
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3207
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3209
3210
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3220
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3223
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3234
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3237
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3245
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3247
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3250
3251
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3253
3254
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3256
3257
3258
3259
3260
3261
3262
3263
3264

3265
3266


3267
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3270

3271
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3278
3279
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3284
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3290

3291
3292
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3296
3297
3298
3299

3300
3301
3302
3303
3304

3305

3306
3307


3308
3309
3310
3311
3312
3313
3314
3315
3316
3317

3318


3319

3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330

3331
3332
3333
3334
3335
3336
3337
3338
3339
3340

3341
3342
3343



3344
3345
3346
3347
3348
3349
3350

3351
3352
3353
3354

3355
3356
3357
3358
3359
3360

3361

3362
3363
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3370
3371
3372
3373
3374
3375
3376
3377

3378
3379
3380
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3382

3383
3384
3385

3386


3387


3388



3389
3390
3391
3392
3393


3394




3395
3396
3397





3398
3399
3400
3401
3402
3403
3404
3405
3406



3407




3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419





3420
3421
3422
3423
3424
3425
3426





3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443

3444
3445
3446
3447
3448
3449
















3450
3451
3452
3453
3454
3455
3456
3457
3458


3459
3460
3461

3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474







3475
3476
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3490
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3502
3503
3504
3505

3506
3507



3508
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3557
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3572
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3592
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3643
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3682
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3719
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3727
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3729
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3763
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3775
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3792
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3797
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3799
3800
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3806
3807




3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822





3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833







-
+




-
+




















+
+
+
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-
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+








-
-
+
+

+

-
+
+
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+
+
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+
+


+
+
+
+
+
-
-
+
+
+
+

-
-
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+

-
+






+
+
+
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+
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-
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+
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-
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+












+
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-
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+
-
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-
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-
-
+

+
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-
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-
+
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-
+

+
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+
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-
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+
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-
+

-
-
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-
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-
+



+
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-
+
+



-
+
-


-
-
+
+








-
+
-
-

-
+
+
+
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+
+





-
+









-
+


-
-
-
+
+
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+
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-
+



-
+





-
+
-





+
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-
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-
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-
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-
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-
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-
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-
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+
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-
+
+
+
+
+

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+

-
-
+

+
-
+


+

+
+
+
+
+
+
+
+
-
-
-
-
-
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+
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-
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-
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+

+
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+




+
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+



-
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+
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-
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+
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+
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+

-
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+
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-
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-
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-
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-
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-
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-
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*/
static void diff_all(DContext *p){
  int mnE, iS, iE1, iE2;

  /* Carve off the common header and footer */
  iE1 = p->nFrom;
  iE2 = p->nTo;
  while( iE1>0 && iE2>0 && same_dline(&p->aFrom[iE1-1], &p->aTo[iE2-1]) ){
  while( iE1>0 && iE2>0 && p->xDiffer(&p->aFrom[iE1-1], &p->aTo[iE2-1])==0 ){
    iE1--;
    iE2--;
  }
  mnE = iE1<iE2 ? iE1 : iE2;
  for(iS=0; iS<mnE && same_dline(&p->aFrom[iS],&p->aTo[iS]); iS++){}
  for(iS=0; iS<mnE && p->xDiffer(&p->aFrom[iS],&p->aTo[iS])==0; iS++){}

  /* do the difference */
  if( iS>0 ){
    appendTriple(p, iS, 0, 0);
  }
  diff_step(p, iS, iE1, iS, iE2);
  if( iE1<p->nFrom ){
    appendTriple(p, p->nFrom - iE1, 0, 0);
  }

  /* Terminate the COPY/DELETE/INSERT triples with three zeros */
  expandEdit(p, p->nEdit+3);
  if( p->aEdit ){
    p->aEdit[p->nEdit++] = 0;
    p->aEdit[p->nEdit++] = 0;
    p->aEdit[p->nEdit++] = 0;
  }
}

/*
** Attempt to shift insertion or deletion blocks so that they begin and
** end on lines that are pure whitespace.  In other words, try to transform
** this:
**
**      int func1(int x){
**         return x*10;
**     +}
**     +
**     +int func2(int x){
**     +   return x*20;
**      }
**
**      int func3(int x){
**         return x/5;
**      }
**
** Into one of these:
**
**      int func1(int x){              int func1(int x){
**         return x*10;                   return x*10;
**      }                              }
**     +
**     +int func2(int x){             +int func2(int x){
**     +   return x*20;               +   return x*20;
**     +}                             +}
**                                    +
**      int func3(int x){              int func3(int x){
**         return x/5;                    return x/5;
**      }                              }
*/
static void diff_optimize(DContext *p){
  int r;       /* Index of current triple */
  int lnFrom;  /* Line number in p->aFrom */
  int lnTo;    /* Line number in p->aTo */
  int cpy, del, ins;
** Generate a report of the differences between files pA and pB.
** If pOut is not NULL then a unified diff is appended there.  It
** is assumed that pOut has already been initialized.  If pOut is
** NULL, then a pointer to an array of integers is returned.  
** The integers come in triples.  For each triple,
** the elements are the number of lines copied, the number of
** lines deleted, and the number of lines inserted.  The vector
** is terminated by a triple of all zeros.

  lnFrom = lnTo = 0;
  for(r=0; r<p->nEdit; r += 3){
    cpy = p->aEdit[r];
    del = p->aEdit[r+1];
    ins = p->aEdit[r+2];
    lnFrom += cpy;
    lnTo += cpy;

    /* Shift insertions toward the beginning of the file */
    while( cpy>0 && del==0 && ins>0 ){
      DLine *pTop = &p->aFrom[lnFrom-1];  /* Line before start of insert */
      DLine *pBtm = &p->aTo[lnTo+ins-1];  /* Last line inserted */
      if( p->xDiffer(pTop, pBtm) ) break;
      if( LENGTH(pTop+1)+LENGTH(pBtm)<=LENGTH(pTop)+LENGTH(pBtm-1) ) break;
      lnFrom--;
      lnTo--;
      p->aEdit[r]--;
      p->aEdit[r+3]++;
      cpy--;
    }

    /* Shift insertions toward the end of the file */
    while( r+3<p->nEdit && p->aEdit[r+3]>0 && del==0 && ins>0 ){
      DLine *pTop = &p->aTo[lnTo];       /* First line inserted */
      DLine *pBtm = &p->aTo[lnTo+ins];   /* First line past end of insert */
      if( p->xDiffer(pTop, pBtm) ) break;
      if( LENGTH(pTop)+LENGTH(pBtm-1)<=LENGTH(pTop+1)+LENGTH(pBtm) ) break;
      lnFrom++;
      lnTo++;
      p->aEdit[r]++;
      p->aEdit[r+3]--;
      cpy++;
    }

    /* Shift deletions toward the beginning of the file */
    while( cpy>0 && del>0 && ins==0 ){
      DLine *pTop = &p->aFrom[lnFrom-1];     /* Line before start of delete */
      DLine *pBtm = &p->aFrom[lnFrom+del-1]; /* Last line deleted */
      if( p->xDiffer(pTop, pBtm) ) break;
      if( LENGTH(pTop+1)+LENGTH(pBtm)<=LENGTH(pTop)+LENGTH(pBtm-1) ) break;
      lnFrom--;
      lnTo--;
      p->aEdit[r]--;
      p->aEdit[r+3]++;
      cpy--;
    }

    /* Shift deletions toward the end of the file */
    while( r+3<p->nEdit && p->aEdit[r+3]>0 && del>0 && ins==0 ){
      DLine *pTop = &p->aFrom[lnFrom];     /* First line deleted */
      DLine *pBtm = &p->aFrom[lnFrom+del]; /* First line past end of delete */
      if( p->xDiffer(pTop, pBtm) ) break;
      if( LENGTH(pTop)+LENGTH(pBtm-1)<=LENGTH(pTop)+LENGTH(pBtm) ) break;
      lnFrom++;
      lnTo++;
      p->aEdit[r]++;
      p->aEdit[r+3]--;
      cpy++;
    }

    lnFrom += del;
    lnTo += ins;
  }
}

/*
** Extract the number of lines of context from diffFlags.  Supply an
** appropriate default if no context width is specified. If pCfg is
** NULL then the compile-time default is used (which gets propagated
** to JS-side state by certain pages).
*/
int diff_context_lines(DiffConfig *pCfg){
  const int dflt = 5;
  if(pCfg!=0){
    int n = pCfg->nContext;
    if( n==0 && (pCfg->diffFlags & DIFF_CONTEXT_EX)==0 ) n = dflt;
    return n<0 ? 0x7ffffff : n;
  }else{
    return dflt;
  }
}

/*
** Extract the width of columns for side-by-side diff.  Supply an
** appropriate default if no width is given.
**
** Calculate the default automatically, based on terminal's current width:
**   term-width = 2*diff-col + diff-marker + 1
**   diff-col = lineno + lmargin + text-width + rmargin
**
**   text-width = (term-width - diff-marker - 1)/2 - lineno - lmargin - rmargin
*/
int diff_width(DiffConfig *pCfg){
  int w = pCfg->wColumn;
  if( w==0 ){
    static struct {
      unsigned int lineno, lmargin, text, rmargin, marker;
    } sbsW = { 5, 2, 0, 0, 3 };
    const unsigned int wMin = 24, wMax = 132;
    unsigned int tw = terminal_get_width(80);
    unsigned int twMin =
      (wMin + sbsW.lineno + sbsW.lmargin + sbsW.rmargin)*2 + sbsW.marker + 1;
    unsigned int twMax =
      (wMax + sbsW.lineno + sbsW.lmargin + sbsW.rmargin)*2 + sbsW.marker + 1;

    if( tw<twMin ){
      tw = twMin;
    }else if( tw>twMax ){
      tw = twMax;
    }
    sbsW.text =
      (tw - sbsW.marker - 1)/2 - sbsW.lineno - sbsW.lmargin - sbsW.rmargin;
    w = sbsW.text;
  }
  return w;
}

/*
** Append the error message to pOut.
*/
void diff_errmsg(Blob *pOut, const char *msg, int diffFlags){
  if( diffFlags & DIFF_HTML ){
    blob_appendf(pOut, "<p class=\"generalError\">%s</p>", msg);
  }else{
    blob_append(pOut, msg, -1);
  }
}

/*
** Generate a report of the differences between files pA_Blob and pB_Blob.
**
** If pOut!=NULL then append text to pOut that will be the difference,
** formatted according to flags in diffFlags.  The pOut Blob must have
** already been initialized.
**
** If pOut==NULL then no formatting occurs.  Instead, this routine
** returns a pointer to an array of integers.  The integers come in
** triples.  The elements of each triple are:
**
**   1.  The number of lines to copy
**   2.  The number of lines to delete
**   3.  The number of lines to insert
**
** The return vector is terminated by a triple of all zeros.  The caller
** should free the returned vector using fossil_free().
**
** This diff utility does not work on binary files.  If a binary
** file is encountered, 0 is returned and pOut is written with
** text "cannot compute difference between binary files".
*/
int *text_diff(
  Blob *pA_Blob,   /* FROM file */
  Blob *pB_Blob,   /* TO file */
  Blob *pOut,      /* Write unified diff here if not NULL */
  int nContext     /* Amount of context to unified diff */
  Blob *pOut,      /* Write diff here if not NULL */
  DiffConfig *pCfg /* Configuration options */
){
  int ignoreWs; /* Ignore whitespace */
  DContext c;
 

  if( pCfg->diffFlags & DIFF_INVERT ){
    Blob *pTemp = pA_Blob;
    pA_Blob = pB_Blob;
    pB_Blob = pTemp;
  }
  ignoreWs = (pCfg->diffFlags & DIFF_IGNORE_ALLWS)!=0;
  blob_to_utf8_no_bom(pA_Blob, 0);
  blob_to_utf8_no_bom(pB_Blob, 0);

  /* Prepare the input files */
  memset(&c, 0, sizeof(c));
  if( (pCfg->diffFlags & DIFF_IGNORE_ALLWS)==DIFF_IGNORE_ALLWS ){
    c.xDiffer = compare_dline_ignore_allws;
  }else{
    c.xDiffer = compare_dline;
  }
  c.aFrom = break_into_lines(blob_str(pA_Blob), blob_size(pA_Blob), &c.nFrom);
  c.aTo = break_into_lines(blob_str(pB_Blob), blob_size(pB_Blob), &c.nTo);
  c.aFrom = break_into_lines(blob_str(pA_Blob), blob_size(pA_Blob),
                             &c.nFrom, pCfg->diffFlags);
  c.aTo = break_into_lines(blob_str(pB_Blob), blob_size(pB_Blob),
                           &c.nTo, pCfg->diffFlags);
  if( c.aFrom==0 || c.aTo==0 ){
    free(c.aFrom);
    free(c.aTo);
    fossil_free(c.aFrom);
    fossil_free(c.aTo);
    if( pOut ){
      blob_appendf(pOut, "cannot compute difference between binary files\n");
      diff_errmsg(pOut, DIFF_CANNOT_COMPUTE_BINARY, pCfg->diffFlags);
    }
    return 0;
  }

  /* Compute the difference */
  diff_all(&c);
  if( ignoreWs && c.nEdit==6 && c.aEdit[1]==0 && c.aEdit[2]==0 ){
    fossil_free(c.aFrom);
    fossil_free(c.aTo);
    fossil_free(c.aEdit);
    if( pOut ) diff_errmsg(pOut, DIFF_WHITESPACE_ONLY, pCfg->diffFlags);
    return 0;

  }
  if( (pCfg->diffFlags & DIFF_NOTTOOBIG)!=0 ){
    int i, m, n;
    int *a = c.aEdit;
    int mx = c.nEdit;
    for(i=m=n=0; i<mx; i+=3){ m += a[i]; n += a[i+1]+a[i+2]; }
    if( n>10000 ){
      fossil_free(c.aFrom);
      fossil_free(c.aTo);
      fossil_free(c.aEdit);
      if( pOut ) diff_errmsg(pOut, DIFF_TOO_MANY_CHANGES, pCfg->diffFlags);
      return 0;
    }
  }
  if( (pCfg->diffFlags & DIFF_NOOPT)==0 ){
    diff_optimize(&c);
  }

  if( pOut ){
    if( pCfg->diffFlags & DIFF_NUMSTAT ){
      int nDel = 0, nIns = 0, i;
      for(i=0; c.aEdit[i] || c.aEdit[i+1] || c.aEdit[i+2]; i+=3){
        nDel += c.aEdit[i+1];
        nIns += c.aEdit[i+2];
      }
      g.diffCnt[1] += nIns;
      g.diffCnt[2] += nDel;
      if( nIns+nDel ){
    /* Compute a context diff if requested */
    contextDiff(&c, pOut, nContext);
    free(c.aFrom);
    free(c.aTo);
    free(c.aEdit);
        g.diffCnt[0]++;
        blob_appendf(pOut, "%10d %10d", nIns, nDel);
      }
    }else if( pCfg->diffFlags & DIFF_RAW ){
      const int *R = c.aEdit;
      unsigned int r;
      for(r=0; R[r] || R[r+1] || R[r+2]; r += 3){
        blob_appendf(pOut, " copy %6d  delete %6d  insert %6d\n",
                     R[r], R[r+1], R[r+2]);
      }
    }else if( pCfg->diffFlags & DIFF_JSON ){
      DiffBuilder *pBuilder = dfjsonNew(pOut);
      formatDiff(&c, pCfg, pBuilder);
      blob_append_char(pOut, '\n');
    }else if( pCfg->diffFlags & DIFF_TCL ){
      DiffBuilder *pBuilder = dftclNew(pOut);
      formatDiff(&c, pCfg, pBuilder);
    }else if( pCfg->diffFlags & DIFF_SIDEBYSIDE ){
      DiffBuilder *pBuilder;
      if( pCfg->diffFlags & DIFF_HTML ){
        pBuilder = dfsplitNew(pOut, pCfg);
      }else{
        pBuilder = dfsbsNew(pOut, pCfg);
      }
      formatDiff(&c, pCfg, pBuilder);
    }else if( pCfg->diffFlags & DIFF_DEBUG ){
      DiffBuilder *pBuilder = dfdebugNew(pOut);
      formatDiff(&c, pCfg, pBuilder);
    }else if( pCfg->diffFlags & DIFF_HTML ){
      DiffBuilder *pBuilder = dfunifiedNew(pOut, pCfg);
      formatDiff(&c, pCfg, pBuilder);
    }else{
      contextDiff(&c, pOut, pCfg);
    }
    fossil_free(c.aFrom);
    fossil_free(c.aTo);
    fossil_free(c.aEdit);
    return 0;
  }else{
    /* If a context diff is not requested, then return the
    ** array of COPY/DELETE/INSERT triples.
    */
    free(c.aFrom);
    free(c.aTo);
    return c.aEdit;
  }
}

/*
** Initialize the DiffConfig object using command-line options.
**
** Process diff-related command-line options and return an appropriate
** COMMAND: test-rawdiff
** "diffFlags" integer.
**
**   --brief                      Show filenames only        DIFF_BRIEF
**   -c|--context N               N lines of context.        nContext
**   --html                       Format for HTML            DIFF_HTML
**   --invert                     Invert the diff            DIFF_INVERT
**   -n|--linenum                 Show line numbers          DIFF_LINENO
**   --noopt                      Disable optimization       DIFF_NOOPT
**   --numstat                    Show change counts         DIFF_NUMSTAT
**   --strip-trailing-cr          Strip trailing CR          DIFF_STRIP_EOLCR
**   --unified                    Unified diff.              ~DIFF_SIDEBYSIDE
**   -w|--ignore-all-space        Ignore all whitespaces     DIFF_IGNORE_ALLWS
**   -W|--width N                 N character lines.         wColumn
**   -y|--side-by-side            Side-by-side diff.         DIFF_SIDEBYSIDE
**   -Z|--ignore-trailing-space   Ignore eol-whitespaces     DIFF_IGNORE_EOLWS
*/
void diff_options(DiffConfig *pCfg, int isGDiff, int bUnifiedTextOnly){
void test_rawdiff_cmd(void){
  u64 diffFlags = 0;
  Blob a, b;
  int r;
  int i;
  int *R;
  if( g.argc<4 ) usage("FILE1 FILE2 ...");
  blob_read_from_file(&a, g.argv[2]);
  const char *z;
  int f;

  memset(pCfg, 0, sizeof(*pCfg));
  if( find_option("ignore-trailing-space","Z",0)!=0 ){
    diffFlags = DIFF_IGNORE_EOLWS;
  }
  if( find_option("ignore-all-space","w",0)!=0 ){
    diffFlags = DIFF_IGNORE_ALLWS; /* stronger than DIFF_IGNORE_EOLWS */
  }
  if( find_option("strip-trailing-cr",0,0)!=0 ){
    diffFlags |= DIFF_STRIP_EOLCR;
  }
  if( !bUnifiedTextOnly ){
    if( find_option("side-by-side","y",0)!=0 ) diffFlags |= DIFF_SIDEBYSIDE;
    if( find_option("yy",0,0)!=0 ){
      diffFlags |= DIFF_SIDEBYSIDE | DIFF_SLOW_SBS;
    }
    if( find_option("html",0,0)!=0 ) diffFlags |= DIFF_HTML;
    if( find_option("unified",0,0)!=0 ) diffFlags &= ~DIFF_SIDEBYSIDE;
    if( find_option("webpage",0,0)!=0 ){
      diffFlags |= DIFF_HTML|DIFF_WEBPAGE|DIFF_LINENO;
    }
    if( find_option("browser","b",0)!=0 ){
      diffFlags |= DIFF_HTML|DIFF_WEBPAGE|DIFF_LINENO|DIFF_BROWSER;
    }
    if( find_option("by",0,0)!=0 ){
      diffFlags |= DIFF_HTML|DIFF_WEBPAGE|DIFF_LINENO|DIFF_BROWSER
                     |DIFF_SIDEBYSIDE;
    }
    if( find_option("json",0,0)!=0 ){
      diffFlags |= DIFF_JSON;
    }
    if( find_option("tcl",0,0)!=0 ){
      diffFlags |= DIFF_TCL;
    }

  for(i=3; i<g.argc; i++){
    if( i>3 ) printf("-------------------------------\n");
    blob_read_from_file(&b, g.argv[i]);
    R = text_diff(&a, &b, 0, 0);
    /* Undocumented and unsupported flags used for development
    ** debugging and analysis: */
    if( find_option("debug",0,0)!=0 ) diffFlags |= DIFF_DEBUG;
    if( find_option("raw",0,0)!=0 )   diffFlags |= DIFF_RAW;
  }
  if( (z = find_option("context","c",1))!=0 ){
    char *zEnd;
    f = (int)strtol(z, &zEnd, 10);
    if( zEnd[0]==0 && errno!=ERANGE ){
      pCfg->nContext = f;
    for(r=0; R[r] || R[r+1] || R[r+2]; r += 3){
      printf(" copy %4d  delete %4d  insert %4d\n", R[r], R[r+1], R[r+2]);
      diffFlags |= DIFF_CONTEXT_EX;
    }
  }
  if( (z = find_option("width","W",1))!=0 && (f = atoi(z))>0 ){
    /* free(R); */
    blob_reset(&b);
  }
    pCfg->wColumn = f;
  }
  if( find_option("linenum","n",0)!=0 ) diffFlags |= DIFF_LINENO;
  if( find_option("noopt",0,0)!=0 ) diffFlags |= DIFF_NOOPT;
  if( find_option("numstat",0,0)!=0 ) diffFlags |= DIFF_NUMSTAT;
  if( find_option("versions","h",0)!=0 ) diffFlags |= DIFF_SHOW_VERS;
  if( find_option("dark",0,0)!=0 ) diffFlags |= DIFF_DARKMODE;
  if( find_option("invert",0,0)!=0 ) diffFlags |= DIFF_INVERT;
  if( find_option("brief",0,0)!=0 ) diffFlags |= DIFF_BRIEF;
  if( find_option("internal","i",0)==0
   && (diffFlags & (DIFF_HTML|DIFF_TCL|DIFF_DEBUG|DIFF_JSON))==0
  ){
    pCfg->zDiffCmd = find_option("command", 0, 1);
    if( pCfg->zDiffCmd==0 ) pCfg->zDiffCmd = diff_command_external(isGDiff);
    if( pCfg->zDiffCmd ){
      const char *zDiffBinary;
      pCfg->zBinGlob = diff_get_binary_glob();
      zDiffBinary = find_option("diff-binary", 0, 1);
      if( zDiffBinary ){
        if( is_truth(zDiffBinary) ) diffFlags |= DIFF_INCBINARY;
      }else if( db_get_boolean("diff-binary", 1) ){
        diffFlags |= DIFF_INCBINARY;
      }
    }
  }
  if( find_option("verbose","v",0)!=0 ) diffFlags |= DIFF_VERBOSE;
  /* Deprecated, but retained for script compatibility. */
  else if( find_option("new-file","N",0)!=0 ) diffFlags |= DIFF_VERBOSE;

  pCfg->diffFlags = diffFlags;
}

/*
** COMMAND: test-udiff
** COMMAND: test-diff
** COMMAND: xdiff
**
** Usage: %fossil xdiff [options] FILE1 FILE2
**
** Compute an "external diff" between two files. By "external diff" we mean
** a diff between two disk files that are not necessarily under management.
** In other words, this command provides a mechanism to use Fossil's file
** difference engine on arbitrary disk files.  See the "diff" command for
** computing differences between files that are under management.
**
** This command prints the differences between the two files FILE1 and FILE2.
** all of the usual diff formatting options (--tk, --by, -c N, etc.) apply.
** See the "diff" command for a full list of command-line options.
**
** This command used to be called "test-diff".  The older "test-diff" spelling
** still works, for compatibility.
*/
void test_udiff_cmd(void){
void xdiff_cmd(void){
  Blob a, b, out;
  const char *zRe;           /* Regex filter for diff output */
  DiffConfig DCfg;

  if( find_option("tk",0,0)!=0 ){
    diff_tk("xdiff", 2);
    return;
  }
  find_option("i",0,0);
  find_option("v",0,0);
  diff_options(&DCfg, 0, 0);
  zRe = find_option("regexp","e",1);
  if( zRe ){
    const char *zErr = re_compile(&DCfg.pRe, zRe, 0);
    if( zErr ) fossil_fatal("regex error: %s", zErr);
  }
  verify_all_options();
  if( g.argc!=4 ) usage("FILE1 FILE2");
  blob_zero(&out);
  diff_begin(&DCfg);
  diff_print_filenames(g.argv[2], g.argv[3], &DCfg, &out);
  blob_read_from_file(&a, g.argv[2]);
  blob_read_from_file(&b, g.argv[3]);
  blob_read_from_file(&a, g.argv[2], ExtFILE);
  blob_read_from_file(&b, g.argv[3], ExtFILE);
  blob_zero(&out);
  text_diff(&a, &b, &out, 3);
  text_diff(&a, &b, &out, &DCfg);
  blob_write_to_file(&out, "-");
  diff_end(&DCfg, 0);
  re_free(DCfg.pRe);
}

/**************************************************************************
** The basic difference engine is above.  What follows is the annotation
** engine.  Both are in the same file since they share many components.
*/

/*
** The status of an annotation operation is recorded by an instance
** of the following structure.
*/
typedef struct Annotator Annotator;
struct Annotator {
  DContext c;       /* The diff-engine context */
  struct {          /* Lines of the original files... */
  struct AnnLine {  /* Lines of the original files... */
    const char *z;       /* The text of the line */
    int n;               /* Number of bytes (omitting trailing space and \n) */
    const char *zSrc;    /* Tag showing origin of this line */
    short int n;         /* Number of bytes (omitting trailing \n) */
    short int iVers;     /* Level at which tag was set */
  } *aOrig;
  int nOrig;        /* Number of elements in aOrig[] */
  int nNoSrc;       /* Number of entries where aOrig[].zSrc==NULL */
  int nVers;        /* Number of versions analyzed */
  int bMoreToDo;    /* True if the limit was reached */
  int origId;       /* RID for the zOrigin version */
  int showId;       /* RID for the version being analyzed */
  struct AnnVers {
    const char *zFUuid;   /* File being analyzed */
    const char *zMUuid;   /* Check-in containing the file */
    const char *zDate;    /* Date of the check-in */
    const char *zBgColor; /* Suggested background color */
    const char *zUser;    /* Name of user who did the check-in */
    unsigned cnt;         /* Number of lines contributed by this check-in */
  } *aVers;         /* For each check-in analyzed */
  char **azVers;    /* Names of versions analyzed */
};

/*
** Initialize the annotation process by specifying the file that is
** to be annotated.  The annotator takes control of the input Blob and
** will release it when it is finished with it.
*/
static int annotation_start(Annotator *p, Blob *pInput){
static int annotation_start(Annotator *p, Blob *pInput, u64 diffFlags){
  int i;

  memset(p, 0, sizeof(*p));
  if( (diffFlags & DIFF_IGNORE_ALLWS)==DIFF_IGNORE_ALLWS ){
    p->c.xDiffer = compare_dline_ignore_allws;
  }else{
    p->c.xDiffer = compare_dline;
  }
  p->c.aTo = break_into_lines(blob_str(pInput), blob_size(pInput), &p->c.nTo);
  p->c.aTo = break_into_lines(blob_str(pInput), blob_size(pInput),&p->c.nTo,
                              diffFlags);
  if( p->c.aTo==0 ){
    return 1;
  }
  p->aOrig = malloc( sizeof(p->aOrig[0])*p->c.nTo );
  p->aOrig = fossil_malloc( sizeof(p->aOrig[0])*p->c.nTo );
  if( p->aOrig==0 ) fossil_panic("out of memory");
  for(i=0; i<p->c.nTo; i++){
    p->aOrig[i].z = p->c.aTo[i].z;
    p->aOrig[i].n = p->c.aTo[i].h & LENGTH_MASK;
    p->aOrig[i].zSrc = 0;
    p->aOrig[i].n = p->c.aTo[i].n;
    p->aOrig[i].iVers = -1;
  }
  p->nOrig = p->c.nTo;
  return 0;
}

/*
** The input pParent is the next most recent ancestor of the file
** being annotated.  Do another step of the annotation.  Return true
** if additional annotation is required.  zPName is the tag to insert
** if additional annotation is required.
** on each line of the file being annotated that was contributed by
** pParent.  Memory to hold zPName is leaked.
*/
static int annotation_step(Annotator *p, Blob *pParent, char *zPName){
static int annotation_step(
  Annotator *p,
  Blob *pParent,
  int iVers,
  u64 diffFlags
){
  int i, j;
  int lnTo;

  /* Prepare the parent file to be diffed */
  p->c.aFrom = break_into_lines(blob_str(pParent), blob_size(pParent),
                                &p->c.nFrom);
                                &p->c.nFrom, diffFlags);
  if( p->c.aFrom==0 ){
    return 1;
  }

  /* Compute the differences going from pParent to the file being
  ** annotated. */
  diff_all(&p->c);

  /* Where new lines are inserted on this difference, record the
  ** zPName as the source of the new line.
  ** iVers as the source of the new line.
  */
  for(i=lnTo=0; i<p->c.nEdit; i+=3){
    for(j=0; j<p->c.aEdit[i]; j++, lnTo++){
      p->aOrig[lnTo].zSrc = zPName;
    }
    int nCopy = p->c.aEdit[i];
    int nIns = p->c.aEdit[i+2];
    lnTo += nCopy;
    for(j=0; j<nIns; j++, lnTo++){
      if( p->aOrig[lnTo].iVers<0 ){
        p->aOrig[lnTo].iVers = iVers;
      }
    lnTo += p->c.aEdit[i+2];
    }
  }

  /* Clear out the diff results */
  free(p->c.aEdit);
  fossil_free(p->c.aEdit);
  p->c.aEdit = 0;
  p->c.nEdit = 0;
  p->c.nEditAlloc = 0;

  /* Clear out the from file */
  free(p->c.aFrom);    
  free(p->c.aFrom);
  blob_zero(pParent);

  /* Return no errors */
  return 0;
}

/* Return the current time as milliseconds since the Julian epoch */
static sqlite3_int64 current_time_in_milliseconds(void){
  static sqlite3_vfs *clockVfs = 0;
  sqlite3_int64 t;
  if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0);
  if( clockVfs->iVersion>=2 && clockVfs->xCurrentTimeInt64!=0 ){
    clockVfs->xCurrentTimeInt64(clockVfs, &t);
  }else{
    double r;
    clockVfs->xCurrentTime(clockVfs, &r);
    t = (sqlite3_int64)(r*86400000.0);

  }
  return t;
}

/*
** COMMAND: test-annotate-step
** Compute a complete annotation on a file.  The file is identified by its
** filename and check-in name (NULL for current check-in).
*/
void test_annotate_step_cmd(void){
static void annotate_file(
  Blob orig, b;
  Annotator x;
  Annotator *p,          /* The annotator */
  int i;

  const char *zFilename, /* The name of the file to be annotated */
  if( g.argc<4 ) usage("RID1 RID2 ...");
  db_must_be_within_tree();
  blob_zero(&b);
  const char *zRevision, /* Use the version of the file in this check-in */
  const char *zLimit,    /* Limit the number of versions analyzed */
  const char *zOrigin,   /* The origin check-in, or NULL for root-of-tree */
  u64 annFlags           /* Flags to alter the annotation */
){
  content_get(name_to_rid(g.argv[2]), &orig);
  if( annotation_start(&x, &orig) ){
  Blob toAnnotate;       /* Text of the final (mid) version of the file */
    fossil_fatal("binary file");
  }
  for(i=3; i<g.argc; i++){
    blob_zero(&b);
  Blob step;             /* Text of previous revision */
  int cid;               /* Selected check-in ID */
  int origid = 0;        /* The origin ID or zero */
    content_get(name_to_rid(g.argv[i]), &b);
    if( annotation_step(&x, &b, g.argv[i-1]) ){
      fossil_fatal("binary file");
    }
  }
  int rid;               /* Artifact ID of the file being annotated */
  int fnid;              /* Filename ID */
  Stmt q;                /* Query returning all ancestor versions */
  int cnt = 0;           /* Number of versions analyzed */
  int iLimit;            /* Maximum number of versions to analyze */
  sqlite3_int64 mxTime;  /* Halt at this time if not already complete */

  memset(p, 0, sizeof(*p));

  for(i=0; i<x.nOrig; i++){
    const char *zSrc = x.aOrig[i].zSrc;
    if( zSrc==0 ) zSrc = g.argv[g.argc-1];
  if( zLimit ){
    printf("%10s: %.*s\n", zSrc, x.aOrig[i].n, x.aOrig[i].z);
  }
}

    if( strcmp(zLimit,"none")==0 ){
      iLimit = 0;
      mxTime = 0;
    }else if( sqlite3_strglob("*[0-9]s", zLimit)==0 ){
      iLimit = 0;
      mxTime =
        (sqlite3_int64)(current_time_in_milliseconds() + 1000.0*atof(zLimit));
    }else{
      iLimit = atoi(zLimit);
      if( iLimit<=0 ) iLimit = 30;
      mxTime = 0;
    }
/*
** Compute a complete annotation on a file.  The file is identified
** by its filename number (filename.fnid) and the baseline in which
** it was checked in (mlink.mid).
*/
  }else{
    /* Default limit is as much as we can do in 1.000 seconds */
    iLimit = 0;
    mxTime = current_time_in_milliseconds()+1000;
  }
  db_begin_transaction();

static void annotate_file(Annotator *p, int fnid, int mid, int webLabel){
  Blob toAnnotate;     /* Text of the final version of the file */
  Blob step;           /* Text of previous revision */
  int rid;             /* Artifact ID of the file being annotated */
  char *zLabel;        /* Label to apply to a line */
  /* Get the artifact ID for the check-in begin analyzed */
  if( zRevision ){
    cid = name_to_typed_rid(zRevision, "ci");
  }else{
    db_must_be_within_tree();
    cid = db_lget_int("checkout", 0);
  }
  origid = zOrigin ? name_to_typed_rid(zOrigin, "ci") : 0;

  /* Compute all direct ancestors of the check-in being analyzed into
  ** the "ancestor" table. */
  if( origid ){
    path_shortest_stored_in_ancestor_table(origid, cid);
  }else{
    compute_direct_ancestors(cid);
  }

  Stmt q;              /* Query returning all ancestor versions */
  /* Get filename ID */
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", zFilename);
  if( fnid==0 ){
    fossil_fatal("no such file: %Q", zFilename);
  }

  /* Initialize the annotation */
  rid = db_int(0, "SELECT fid FROM mlink WHERE mid=%d AND fnid=%d",mid,fnid);
  if( rid==0 ){
    fossil_panic("file #%d is unchanged in manifest #%d", fnid, mid);
  }
  if( !content_get(rid, &toAnnotate) ){
    fossil_panic("unable to retrieve content of artifact #%d", rid);
  }
  db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
  compute_ancestors(mid, 1000000000);
  annotation_start(p, &toAnnotate);

  db_prepare(&q, 
    "SELECT mlink.fid, blob.uuid, date(event.mtime), "
    "       coalesce(event.euser,event.user) "
    "  FROM mlink, blob, event"
  db_prepare(&q,
    "SELECT DISTINCT"
    "   (SELECT uuid FROM blob WHERE rid=mlink.fid),"
    "   (SELECT uuid FROM blob WHERE rid=mlink.mid),"
    "   date(event.mtime),"
    "   coalesce(event.euser,event.user),"
    "   mlink.fid"
    "  FROM mlink, event, ancestor"
    " WHERE mlink.fnid=%d"
    "   AND mlink.mid IN ok"
    "   AND blob.rid=mlink.mid"
    "   AND ancestor.rid=mlink.mid"
    "   AND event.objid=mlink.mid"
    "   AND mlink.mid!=mlink.pid"
    " ORDER BY event.mtime DESC",
    " ORDER BY ancestor.generation;",
    fnid
  );

  while( db_step(&q)==SQLITE_ROW ){
    if( cnt>=3 ){  /* Process at least 3 rows before imposing limits */
      if( (iLimit>0 && cnt>=iLimit)
       || (cnt>0 && mxTime>0 && current_time_in_milliseconds()>mxTime)
      ){
        p->bMoreToDo = 1;
        break;
      }
    }
    int pid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    if( webLabel ){
      zLabel = mprintf("<a href='%s/info/%s'>%.10s</a> %s %9.9s", 
                       g.zBaseURL, zUuid, zUuid, zDate, zUser);
    rid = db_column_int(&q, 4);
    if( cnt==0 ){
      if( !content_get(rid, &toAnnotate) ){
        fossil_fatal("unable to retrieve content of artifact #%d", rid);
      }
      blob_to_utf8_no_bom(&toAnnotate, 0);
      annotation_start(p, &toAnnotate, annFlags);
      p->bMoreToDo = origid!=0;
      p->origId = origid;
      p->showId = cid;
    }
    p->aVers = fossil_realloc(p->aVers, (p->nVers+1)*sizeof(p->aVers[0]));
    p->aVers[p->nVers].zFUuid = fossil_strdup(db_column_text(&q, 0));
    p->aVers[p->nVers].zMUuid = fossil_strdup(db_column_text(&q, 1));
    p->aVers[p->nVers].zDate = fossil_strdup(db_column_text(&q, 2));
    p->aVers[p->nVers].zUser = fossil_strdup(db_column_text(&q, 3));
    if( cnt>0 ){
      content_get(rid, &step);
      blob_to_utf8_no_bom(&step, 0);
      annotation_step(p, &step, p->nVers-1, annFlags);
      blob_reset(&step);
    }
    p->nVers++;
    cnt++;
  }

  if( p->nVers==0 ){
    if( zRevision ){
      fossil_fatal("file %s does not exist in check-in %s",
                   zFilename, zRevision);
    }else{
      zLabel = mprintf("%.10s %s %9.9s", zUuid, zDate, zUser);
      fossil_fatal("no history for file: %s", zFilename);
    }
    content_get(pid, &step);
    annotation_step(p, &step, zLabel);
    blob_reset(&step);
  }

  db_finalize(&q);
  db_end_transaction(0);
}

/*
** Return a color from a gradient.
*/
unsigned gradient_color(unsigned c1, unsigned c2, int n, int i){
  unsigned c;   /* Result color */
  unsigned x1, x2;
  if( i==0 || n==0 ) return c1;
  else if(i>=n) return c2;
  x1 = (c1>>16)&0xff;
  x2 = (c2>>16)&0xff;
  c = (x1*(n-i) + x2*i)/n<<16 & 0xff0000;
  x1 = (c1>>8)&0xff;
  x2 = (c2>>8)&0xff;
  c |= (x1*(n-i) + x2*i)/n<<8 & 0xff00;
  x1 = c1&0xff;
  x2 = c2&0xff;
  c |= (x1*(n-i) + x2*i)/n & 0xff;
  return c;
}

/*
** WEBPAGE: annotate
** WEBPAGE: blame
** WEBPAGE: praise
**
** URL: /annotate?checkin=ID&filename=FILENAME
** URL: /blame?checkin=ID&filename=FILENAME
** URL: /praise?checkin=ID&filename=FILENAME
**
** Show the most recent change to each line of a text file.  /annotate shows
** the date of the changes and the check-in hash (with a link to the
** check-in).  /blame and /praise also show the user who made the check-in.
**
** Reverse Annotations:  Normally, these web pages look at versions of
** FILENAME moving backwards in time back toward the root check-in.  However,
** if the origin= query parameter is used to specify some future check-in
** (example: "origin=trunk") then these pages show changes moving towards
** that alternative origin.  Thus using "origin=trunk" on an historical
** version of the file shows the first time each line in the file was changed
** or removed by any subsequent check-in.
**
** Query parameters:
**
**    checkin=ID          The manifest ID at which to start the annotation
**    checkin=ID          The check-in at which to start the annotation
**    filename=FILENAME   The filename.
**    filevers=BOOLEAN    Show file versions rather than check-in versions
**    limit=LIMIT         Limit the amount of analysis.  LIMIT can be one of:
**                           none   No limit
**                           Xs     As much as can be computed in X seconds
**                           N      N versions
**    log=BOOLEAN         Show a log of versions analyzed
**    origin=ID           The origin check-in.  If unspecified, the root
**                        check-in over the entire repository is used.
**                        Specify "origin=trunk" or similar for a reverse
**                        annotation
**    w=BOOLEAN           Ignore whitespace
*/
void annotation_page(void){
  int mid;
  int fnid;
  int i;
  const char *zLimit;    /* Depth limit */
  u64 annFlags = DIFF_STRIP_EOLCR;
  int showLog;           /* True to display the log */
  int fileVers;          /* Show file version instead of check-in versions */
  int ignoreWs;          /* Ignore whitespace */
  const char *zFilename; /* Name of file to annotate */
  const char *zRevision; /* Name of check-in from which to start annotation */
  const char *zCI;       /* The check-in containing zFilename */
  const char *zOrigin;   /* The origin of the analysis */
  int szHash;            /* Number of characters in %S display */
  char *zLink;
  Annotator ann;
  HQuery url;
  struct AnnVers *p;
  unsigned clr1, clr2, clr;
  int bBlame = g.zPath[0]!='a';/* True for BLAME output.  False for ANNOTATE. */

  /* Gather query parameters */
  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  mid = name_to_rid(PD("checkin","0"));
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", P("filename"));
  if( mid==0 || fnid==0 ){ fossil_redirect_home(); }
  if( !db_exists("SELECT 1 FROM mlink WHERE mid=%d AND fnid=%d",mid,fnid) ){
    fossil_redirect_home();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  if( exclude_spiders(0) ) return;
  fossil_nice_default();
  zFilename = P("filename");
  zRevision = PD("checkin",0);
  zOrigin = P("origin");
  zLimit = P("limit");
  showLog = PB("log");
  fileVers = PB("filevers");
  ignoreWs = PB("w");
  if( ignoreWs ) annFlags |= DIFF_IGNORE_ALLWS;
  cgi_check_for_malice();

  /* compute the annotation */
  annotate_file(&ann, zFilename, zRevision, zLimit, zOrigin, annFlags);
  zCI = ann.aVers[0].zMUuid;

  /* generate the web page */
  style_set_current_feature("annotate");
  style_header("Annotation For %h", zFilename);
  if( bBlame ){
    url_initialize(&url, "blame");
  }else{
    url_initialize(&url, "annotate");
  }
  url_add_parameter(&url, "checkin", P("checkin"));
  url_add_parameter(&url, "filename", zFilename);
  if( zLimit ){
    url_add_parameter(&url, "limit", zLimit);
  }
  url_add_parameter(&url, "w", ignoreWs ? "1" : "0");
  url_add_parameter(&url, "log", showLog ? "1" : "0");
  url_add_parameter(&url, "filevers", fileVers ? "1" : "0");
  style_submenu_checkbox("w", "Ignore Whitespace", 0, 0);
  style_submenu_checkbox("log", "Log", 0, "toggle_annotation_log");
  style_submenu_checkbox("filevers", "Link to Files", 0, 0);
  if( ann.bMoreToDo ){
    style_submenu_element("All Ancestors", "%s",
       url_render(&url, "limit", "none", 0, 0));
  }
  if( skin_detail_boolean("white-foreground") ){
    clr1 = 0xa04040;
    clr2 = 0x4059a0;
  }else{
    clr1 = 0xffb5b5;  /* Recent changes: red (hot) */
    clr2 = 0xb5e0ff;  /* Older changes: blue (cold) */
  }
  for(p=ann.aVers, i=0; i<ann.nVers; i++, p++){
    clr = gradient_color(clr1, clr2, ann.nVers-1, i);
    ann.aVers[i].zBgColor = mprintf("#%06x", clr);
  }
  style_header("File Annotation");
  annotate_file(&ann, fnid, mid, g.okHistory);

  @ <div id="annotation_log" style='display:%s(showLog?"block":"none");'>
  if( zOrigin ){
    zLink = href("%R/finfo?name=%t&from=%!S&to=%!S",zFilename,zCI,zOrigin);
  }else{
    zLink = href("%R/finfo?name=%t&from=%!S",zFilename,zCI);
  }
  @ <h2>Versions of %z(zLink)%h(zFilename)</a> analyzed:</h2>
  @ <ol>
  for(p=ann.aVers, i=0; i<ann.nVers; i++, p++){
    @ <li><span style='background-color:%s(p->zBgColor);'>%s(p->zDate)
    @ check-in %z(href("%R/info/%!S",p->zMUuid))%S(p->zMUuid)</a>
    @ artifact %z(href("%R/artifact/%!S",p->zFUuid))%S(p->zFUuid)</a>
    @ </span>
  }
  @ </ol>
  @ <hr>
  @ </div>

  if( !ann.bMoreToDo ){
    assert( ann.origId==0 );  /* bMoreToDo always set for a point-to-point */
    @ <h2>Origin for each line in
    @ %z(href("%R/finfo?name=%h&from=%!S", zFilename, zCI))%h(zFilename)</a>
    @ from check-in %z(href("%R/info/%!S",zCI))%S(zCI)</a>:</h2>
  }else if( ann.origId>0 ){
    @ <h2>Lines of
    @ %z(href("%R/finfo?name=%h&from=%!S", zFilename, zCI))%h(zFilename)</a>
    @ from check-in %z(href("%R/info/%!S",zCI))%S(zCI)</a>
    @ that are changed by the sequence of edits moving toward
    @ check-in %z(href("%R/info/%!S",zOrigin))%S(zOrigin)</a>:</h2>
  }else{
    @ <h2>Lines added by the %d(ann.nVers) most recent ancestors of
    @ %z(href("%R/finfo?name=%h&from=%!S", zFilename, zCI))%h(zFilename)</a>
    @ from check-in %z(href("%R/info/%!S",zCI))%S(zCI)</a>:</h2>
  }
  @ <pre>
  szHash = 10;
  for(i=0; i<ann.nOrig; i++){
    int iVers = ann.aOrig[i].iVers;
    ((char*)ann.aOrig[i].z)[ann.aOrig[i].n] = 0;
    @ %s(ann.aOrig[i].zSrc): %h(ann.aOrig[i].z)
  }
    char *z = (char*)ann.aOrig[i].z;
    int n = ann.aOrig[i].n;
    char zPrefix[300];
    z[n] = 0;
    if( iVers<0 && !ann.bMoreToDo ) iVers = ann.nVers-1;

    if( bBlame ){
      if( iVers>=0 ){
        struct AnnVers *p = ann.aVers+iVers;
        const char *zUuid = fileVers ? p->zFUuid : p->zMUuid;
        char *zLink = xhref("target='infowindow'", "%R/info/%!S", zUuid);
        sqlite3_snprintf(sizeof(zPrefix), zPrefix,
             "<span style='background-color:%s'>"
             "%s%.10s</a> %s</span> %13.13s:",
             p->zBgColor, zLink, zUuid, p->zDate, p->zUser);
        fossil_free(zLink);
      }else{
        sqlite3_snprintf(sizeof(zPrefix), zPrefix, "%*s", szHash+26, "");
      }
    }else{
      if( iVers>=0 ){
        struct AnnVers *p = ann.aVers+iVers;
        const char *zUuid = fileVers ? p->zFUuid : p->zMUuid;
        char *zLink = xhref("target='infowindow'", "%R/info/%!S", zUuid);
        sqlite3_snprintf(sizeof(zPrefix), zPrefix,
             "<span style='background-color:%s'>"
             "%s%.10s</a> %s</span> %4d:",
             p->zBgColor, zLink, zUuid, p->zDate, i+1);
        fossil_free(zLink);
      }else{
        sqlite3_snprintf(sizeof(zPrefix), zPrefix, "%*s%4d:",szHash+12,"",i+1);
      }
    }
    @ %s(zPrefix) %h(z)

  }
  @ </pre>
  style_footer();
  style_finish_page();
}

/*
** COMMAND: annotate
** COMMAND: blame
** COMMAND: praise*
**
** %fossil annotate FILENAME
** Usage: %fossil annotate|blame|praise ?OPTIONS? FILENAME
**
** Output the text of a file with markings to show when each line of
** the file was introduced.
** Output the text of a file with markings to show when each line of the file
** was last modified.  The version currently checked out is shown by default.
** Other versions may be specified using the -r option.  The "annotate" command
** shows line numbers and omits the username.  The "blame" and "praise" commands
** show the user who made each check-in.
**
** Reverse Annotations:  Normally, these commands look at versions of
** FILENAME moving backwards in time back toward the root check-in, and
** thus the output shows the most recent change to each line.  However,
** if the -o|--origin option is used to specify some future check-in
** (example: "-o trunk") then these commands show changes moving towards
** that alternative origin.  Thus using "-o trunk" on an historical version
** of the file shows the first time each line in the file was changed or
** removed by any subsequent check-in.
**
** Options:
**   --filevers                  Show file version numbers rather than
**                               check-in versions
**   -r|--revision VERSION       The specific check-in containing the file
**   -l|--log                    List all versions analyzed
**   -n|--limit LIMIT            LIMIT can be one of:
**                                 N      Up to N versions
**                                 Xs     As much as possible in X seconds
**                                 none   No limit
**   -o|--origin VERSION         The origin check-in. By default this is the
**                               root of the repository. Set to "trunk" or
**                               similar for a reverse annotation.
**   -w|--ignore-all-space       Ignore white space when comparing lines
**   -Z|--ignore-trailing-space  Ignore whitespace at line end
**
** See also: [[info]], [[finfo]], [[timeline]]
*/
void annotate_cmd(void){
  const char *zRevision; /* Revision name, or NULL for current check-in */
  int fnid;         /* Filename ID */
  int fid;          /* File instance ID */
  int mid;          /* Manifest where file was checked in */
  Blob treename;    /* FILENAME translated to canonical form */
  char *zFilename;  /* Cannonical filename */
  Annotator ann;    /* The annotation of the file */
  Annotator ann;         /* The annotation of the file */
  int i;                 /* Loop counter */
  const char *zLimit;    /* The value to the -n|--limit option */
  const char *zOrig;     /* The value for -o|--origin */
  int showLog;           /* True to show the log */
  int fileVers;          /* Show file version instead of check-in versions */
  u64 annFlags = 0;      /* Flags to control annotation properties */
  int bBlame = 0;        /* True for BLAME output.  False for ANNOTATE. */
  int szHash;            /* Display size of a version hash */
  Blob treename;         /* Name of file to be annotated */
  char *zFilename;       /* Name of file to be annotated */

  int i;            /* Loop counter */

  bBlame = g.argv[1][0]!='a';
  zRevision = find_option("revision","r",1);
  zLimit = find_option("limit","n",1);
  zOrig = find_option("origin","o",1);
  showLog = find_option("log","l",0)!=0;
  if( find_option("ignore-trailing-space","Z",0)!=0 ){
    annFlags = DIFF_IGNORE_EOLWS;
  }
  if( find_option("ignore-all-space","w",0)!=0 ){
    annFlags = DIFF_IGNORE_ALLWS; /* stronger than DIFF_IGNORE_EOLWS */
  }
  fileVers = find_option("filevers",0,0)!=0;
  db_must_be_within_tree();

  /* We should be done with options.. */
  verify_all_options();

  if (g.argc<3) {
  if( g.argc<3 ) {
    usage("FILENAME");
  }

  annFlags |= DIFF_STRIP_EOLCR;
  file_tree_name(g.argv[2], &treename, 1);
  file_tree_name(g.argv[2], &treename, 0, 1);
  zFilename = blob_str(&treename);
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", zFilename);
  if( fnid==0 ){
    fossil_fatal("no such file: %s", zFilename);
  }
  annotate_file(&ann, zFilename, zRevision, zLimit, zOrig, annFlags);
  if( showLog ){
    struct AnnVers *p;
    for(p=ann.aVers, i=0; i<ann.nVers; i++, p++){
      fossil_print("version %3d: %s %S file %S\n",
                   i+1, p->zDate, p->zMUuid, p->zFUuid);
    }
  fid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%Q", zFilename);
  if( fid==0 ){
    fossil_fatal("not part of current checkout: %s", zFilename);
    fossil_print("---------------------------------------------------\n");
  }
  mid = db_int(0, "SELECT mid FROM mlink WHERE fid=%d AND fnid=%d", fid, fnid);
  if( mid==0 ){
    fossil_panic("unable to find manifest");
  }
  szHash = length_of_S_display();
  for(i=0; i<ann.nOrig; i++){
    int iVers = ann.aOrig[i].iVers;
    char *z = (char*)ann.aOrig[i].z;
    int n = ann.aOrig[i].n;
    struct AnnVers *p;
    if( iVers<0 && !ann.bMoreToDo ) iVers = ann.nVers-1;
    if( bBlame ){
      if( iVers>=0 ){
        p = ann.aVers + iVers;
        fossil_print("%S %s %13.13s: %.*s\n",
             fileVers ? p->zFUuid : p->zMUuid, p->zDate, p->zUser, n, z);
      }else{
        fossil_print("%*s %.*s\n", szHash+26, "", n, z);
      }
  annotate_file(&ann, fnid, mid, 0);
  for(i=0; i<ann.nOrig; i++){
    printf("%s: %.*s\n", ann.aOrig[i].zSrc, ann.aOrig[i].n, ann.aOrig[i].z);
  }
}
    }else{
      if( iVers>=0 ){
        p = ann.aVers + iVers;
        fossil_print("%S %s %5d: %.*s\n",
             fileVers ? p->zFUuid : p->zMUuid, p->zDate, i+1, n, z);
      }else{
        fossil_print("%*s %5d: %.*s\n", szHash+11, "", i+1, n, z);
      }
    }
  }
}
Added src/diff.js.









































































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/* Refinements to the display of unified and side-by-side diffs.
**
** In all cases, the table columns tagged with "difftxt" are expanded,
** where possible, to fill the width of the screen.
**
** For a side-by-side diff, if either column is two wide to fit on the
** display, scrollbars are added.  The scrollbars are linked, so that
** both sides scroll together.  Left and right arrows also scroll.
*/
window.addEventListener('load',function(){
  var SCROLL_LEN = 25;
  function initDiff(diff){
    var txtCols = diff.querySelectorAll('td.difftxt');
    var txtPres = diff.querySelectorAll('td.difftxt pre');
    var width = 0;
    if(txtPres.length>=2){
      width = Math.max(txtPres[0].scrollWidth, txtPres[1].scrollWidth);
    }
    var i;
    for(i=0; i<txtCols.length; i++){
      txtCols[i].style.width = width + 'px';
      txtPres[i].style.maxWidth = width + 'px';
      txtPres[i].style.width = width + 'px';
      txtPres[i].onscroll = function(e){
        for(var j=0; j<txtPres.length; j++) txtPres[j].scrollLeft = this.scrollLeft;
      };
    }
    diff.tabIndex = 0;
    diff.onkeydown = function(e){
      e = e || event;
      var len = {37: -SCROLL_LEN, 39: SCROLL_LEN}[e.keyCode];
      if( !len ) return;
      txtPres[0].scrollLeft += len;
      return false;
    };
  }
  var i, diffs = document.querySelectorAll('table.splitdiff')
  for(i=0; i<diffs.length; i++){
    initDiff(diffs[i]);
  }
  const checkWidth = function f(){
    if(undefined === f.lastWidth){
      f.lastWidth = 0;
    }
    if( document.body.clientWidth===f.lastWidth ) return;
    f.lastWidth = document.body.clientWidth;
    var w = f.lastWidth*0.5 - 100;
    if(!f.colsL){
      f.colsL = document.querySelectorAll('td.difftxtl pre');
    }
    for(let i=0; i<f.colsL.length; i++){
      f.colsL[i].style.width = w + "px";
      f.colsL[i].style.maxWidth = w + "px";
    }
    if(!f.colsR){
      f.colsR = document.querySelectorAll('td.difftxtr pre');
    }
    for(let i=0; i<f.colsR.length; i++){
      f.colsR[i].style.width = w + "px";
      f.colsR[i].style.maxWidth = w + "px";
    }
    if(!f.allDiffs){
      f.allDiffs = document.querySelectorAll('table.diff');
    }
    w = f.lastWidth;
    for(let i=0; i<f.allDiffs.length; i++){
      f.allDiffs[i].style.width = '100%'; // setting to w causes unsightly horiz. scrollbar
      f.allDiffs[i].style.maxWidth = w + "px";
    }
  };
  checkWidth();
  window.addEventListener('resize', checkWidth);
}, false);
Added src/diff.tcl.
























































































































































































































































































































































































































































































































































































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# The "diff --tk" command outputs prepends a "set fossilcmd {...}" line
# to this file, then runs this file using "tclsh" in order to display the
# graphical diff in a separate window.  A typical "set fossilcmd" line
# looks like this:
#
#     set fossilcmd {| "./fossil" diff --html -y -i -v}
#
# This header comment is stripped off by the "mkbuiltin.c" program.
#
set prog {
package require Tk

array set CFG_light {
  TITLE      {Fossil Diff}
  LN_COL_BG  #dddddd
  LN_COL_FG  #444444
  TXT_COL_BG #ffffff
  TXT_COL_FG #000000
  MKR_COL_BG #444444
  MKR_COL_FG #dddddd
  CHNG_BG    #d0d0ff
  ADD_BG     #c0ffc0
  RM_BG      #ffc0c0
  HR_FG      #444444
  HR_PAD_TOP 4
  HR_PAD_BTM 8
  FN_BG      #444444
  FN_FG      #ffffff
  FN_PAD     5
  ERR_FG     #ee0000
  PADX       5
  WIDTH      80
  HEIGHT     45
  LB_HEIGHT  25
}

array set CFG_dark {
  TITLE      {Fossil Diff}
  LN_COL_BG  #dddddd
  LN_COL_FG  #444444
  TXT_COL_BG #3f3f3f
  TXT_COL_FG #dcdccc
  MKR_COL_BG #444444
  MKR_COL_FG #dddddd
  CHNG_BG    #6a6afc
  ADD_BG     #57934c
  RM_BG      #ef6767
  HR_FG      #444444
  HR_PAD_TOP 4
  HR_PAD_BTM 8
  FN_BG      #5e5e5e
  FN_FG      #ffffff
  FN_PAD     5
  ERR_FG     #ee0000
  PADX       5
  WIDTH      80
  HEIGHT     45
  LB_HEIGHT  25
}

array set CFG_arr {
  0          CFG_light
  1          CFG_dark
}

array set CFG [array get $CFG_arr($darkmode)]

if {![namespace exists ttk]} {
  interp alias {} ::ttk::scrollbar {} ::scrollbar
  interp alias {} ::ttk::menubutton {} ::menubutton
}

proc dehtml {x} {
  set x [regsub -all {<[^>]*>} $x {}]
  return [string map {&amp; & &lt; < &gt; > &#39; ' &quot; \"} $x]
}

proc cols {} {
  return [list .lnA .txtA .mkr .lnB .txtB]
}

proc colType {c} {
  regexp {[a-z]+} $c type
  return $type
}

proc getLine {difftxt N iivar} {
  upvar $iivar ii
  if {$ii>=$N} {return -1}
  set x [lindex $difftxt $ii]
  incr ii
  return $x
}

proc readDiffs {fossilcmd} {
  global difftxt
  if {![info exists difftxt]} {
    set in [open $fossilcmd r]
    fconfigure $in -encoding utf-8
    set difftxt [split [read $in] \n]
    close $in
  }
  set N [llength $difftxt]
  set ii 0
  set nDiffs 0
  set n1 0
  set n2 0  
  array set widths {txt 3 ln 3 mkr 1}
  
  
  set fromIndex [lsearch -glob $fossilcmd *-from]
  set toIndex [lsearch -glob $fossilcmd *-to]
  set branchIndex [lsearch -glob $fossilcmd *-branch]
  set checkinIndex [lsearch -glob $fossilcmd *-checkin]
  set fA {base check-in}
  set fB {current check-out}
  if {$fromIndex > -1} {set fA [lindex $fossilcmd $fromIndex+1]}
  if {$toIndex > -1} {set fB [lindex $fossilcmd $toIndex+1]}
  if {$branchIndex > -1} {set fA "branch point"; set fB "leaf of branch '[lindex $fossilcmd $branchIndex+1]'"}
  if {$checkinIndex > -1} {set fA "primary parent"; set fB [lindex $fossilcmd $checkinIndex+1]}
  
  
  while {[set line [getLine $difftxt $N ii]] != -1} {
    switch -- [lindex $line 0] {
      FILE {
        incr nDiffs
        foreach wx [list [string length $n1] [string length $n2]] {
          if {$wx>$widths(ln)} {set widths(ln) $wx}
        }
        .lnA insert end \n fn \n -
        .txtA insert end "[lindex $line 1] ($fA)\n" fn \n -
        .mkr insert end \n fn \n -
        .lnB insert end \n fn \n -
        .txtB insert end "[lindex $line 2] ($fB)\n" fn \n -
        .wfiles.lb insert end [lindex $line 2]
        set n1 0
        set n2 0
      }
      SKIP {
        set n [lindex $line 1]
        incr n1 $n
        incr n2 $n
        .lnA insert end ...\n hrln
        .txtA insert end [string repeat . 30]\n hrtxt
        .mkr insert end \n hrln
        .lnB insert end ...\n hrln
        .txtB insert end [string repeat . 30]\n hrtxt
      }
      COM {
        set x [lindex $line 1]
        incr n1
        incr n2
        .lnA insert end $n1\n -
        .txtA insert end $x\n -
        .mkr insert end \n -
        .lnB insert end $n2\n -
        .txtB insert end $x\n -
      }
      INS {
        set x [lindex $line 1]
        incr n2
        .lnA insert end \n -
        .txtA insert end \n -
        .mkr insert end >\n -
        .lnB insert end $n2\n -
        .txtB insert end $x add \n -
      }
      DEL {
        set x [lindex $line 1]
        incr n1
        .lnA insert end $n1\n -
        .txtA insert end $x rm \n -
        .mkr insert end <\n -
        .lnB insert end \n -
        .txtB insert end \n -
      }
      EDIT {
        incr n1
        incr n2
        .lnA insert end $n1\n -
        .lnB insert end $n2\n -
        .mkr insert end |\n -
        set nn [llength $line]
        for {set i 1} {$i<$nn} {incr i 3} {
          set x [lindex $line $i]
          if {$x ne ""} {
            .txtA insert end $x -
            .txtB insert end $x -
          }
          if {$i+2<$nn} {
            set x1 [lindex $line [expr {$i+1}]]
            set x2 [lindex $line [expr {$i+2}]]
            if {"$x1" eq ""} {
              .txtB insert end $x2 add
            } elseif {"$x2" eq ""} {
              .txtA insert end $x1 rm
            } else {
              .txtA insert end $x1 chng
              .txtB insert end $x2 chng
            }
          }
        }
        .txtA insert end \n -
        .txtB insert end \n -
      }
      "" {
        foreach wx [list [string length $n1] [string length $n2]] {
          if {$wx>$widths(ln)} {set widths(ln) $wx}
        }
      }
      default {
        .lnA insert end \n -
        .txtA insert end $line\n err
        .mkr insert end \n -
        .lnB insert end \n -
        .txtB insert end $line\n err
      }
    }
  }

  foreach c [cols] {
    set type [colType $c]
    if {$type ne "txt"} {
      $c config -width $widths($type)
    }
    $c config -state disabled
  }
  if {$nDiffs <= [.wfiles.lb cget -height]} {
    .wfiles.lb config -height $nDiffs
    grid remove .wfiles.sb
  }

  return $nDiffs
}

proc viewDiff {idx} {
  .txtA yview $idx
  .txtA xview moveto 0
}

proc cycleDiffs {{reverse 0}} {
  if {$reverse} {
    set range [.txtA tag prevrange fn @0,0 1.0]
    if {$range eq ""} {
      viewDiff {fn.last -1c}
    } else {
      viewDiff [lindex $range 0]
    }
  } else {
    set range [.txtA tag nextrange fn {@0,0 +1c} end]
    if {$range eq "" || [lindex [.txtA yview] 1] == 1} {
      viewDiff fn.first
    } else {
      viewDiff [lindex $range 0]
    }
  }
}

proc xvis {col} {
  set view [$col xview]
  return [expr {[lindex $view 1]-[lindex $view 0]}]
}

proc scroll-x {args} {
  set c .txt[expr {[xvis .txtA] < [xvis .txtB] ? "A" : "B"}]
  eval $c xview $args
}

interp alias {} scroll-y {} .txtA yview

proc noop {args} {}

proc enableSync {axis} {
  update idletasks
  interp alias {} sync-$axis {}
  rename _sync-$axis sync-$axis
}

proc disableSync {axis} {
  rename sync-$axis _sync-$axis
  interp alias {} sync-$axis {} noop
}

proc sync-x {col first last} {
  disableSync x
  $col xview moveto [expr {$first*[xvis $col]/($last-$first)}]
  foreach side {A B} {
    set sb .sbx$side
    set xview [.txt$side xview]
    if {[lindex $xview 0] > 0 || [lindex $xview 1] < 1} {
      grid $sb
      eval $sb set $xview
    } else {
      grid remove $sb
    }
  }
  enableSync x
}

proc sync-y {first last} {
  disableSync y
  foreach c [cols] {
    $c yview moveto $first
  }
  if {$first > 0 || $last < 1} {
    grid .sby
    .sby set $first $last
  } else {
    grid remove .sby
  }
  enableSync y
}

wm withdraw .
wm title . $CFG(TITLE)
wm iconname . $CFG(TITLE)
# Keystroke bindings for on the top-level window for navigation and
# control also fire when those same keystrokes are pressed in the
# Search entry box.  Disable them, to prevent the diff screen from
# disappearing abruptly and unexpectedly when searching for "q".
#
bind . <Control-q> exit
bind . <Control-p> {catch searchPrev; break}
bind . <Control-n> {catch searchNext; break}
bind . <Escape><Escape> exit
bind . <Destroy> {after 0 exit}
bind . <Tab> {cycleDiffs; break}
bind . <<PrevWindow>> {cycleDiffs 1; break}
bind . <Control-f> {searchOnOff; break}
bind . <Control-g> {catch searchNext; break}
bind . <Return> {
  event generate .bb.files <1>
  event generate .bb.files <ButtonRelease-1>
  break
}
foreach {key axis args} {
  Up    y {scroll -5 units}
  k     y {scroll -5 units}
  Down  y {scroll 5 units}
  j     y {scroll 5 units}
  Left  x {scroll -5 units}
  h     x {scroll -5 units}
  Right x {scroll 5 units}
  l     x {scroll 5 units}
  Prior y {scroll -1 page}
  b     y {scroll -1 page}
  Next  y {scroll 1 page}
  space y {scroll 1 page}
  Home  y {moveto 0}
  g     y {moveto 0}
  End   y {moveto 1}
} {
  bind . <$key> "scroll-$axis $args; break"
  bind . <Shift-$key> continue
}

frame .bb
::ttk::menubutton .bb.files -text "Files"
if {[tk windowingsystem] eq "win32"} {
  ::ttk::style theme use winnative
  .bb.files configure -padding {20 1 10 2}
}
toplevel .wfiles
wm withdraw .wfiles
update idletasks
wm transient .wfiles .
wm overrideredirect .wfiles 1
listbox .wfiles.lb -width 0 -height $CFG(LB_HEIGHT) -activestyle none \
  -yscroll {.wfiles.sb set}
::ttk::scrollbar .wfiles.sb -command {.wfiles.lb yview}
grid .wfiles.lb .wfiles.sb -sticky ns
bind .bb.files <1> {
  set x [winfo rootx %W]
  set y [expr {[winfo rooty %W]+[winfo height %W]}]
  wm geometry .wfiles +$x+$y
  wm deiconify .wfiles
  focus .wfiles.lb
}
bind .wfiles <FocusOut> {wm withdraw .wfiles}
bind .wfiles <Escape> {focus .}
foreach evt {1 Return} {
  bind .wfiles.lb <$evt> {
    catch {
      set idx [lindex [.txtA tag ranges fn] [expr {[%W curselection]*2}]]
      viewDiff $idx
    }
    focus .
    break
  }
}
bind .wfiles.lb <Motion> {
  %W selection clear 0 end
  %W selection set @%x,%y
}

foreach {side syncCol} {A .txtB B .txtA} {
  set ln .ln$side
  text $ln
  $ln tag config - -justify right

  set txt .txt$side
  text $txt -width $CFG(WIDTH) -height $CFG(HEIGHT) -wrap none \
    -xscroll "sync-x $syncCol"
  catch {$txt config -tabstyle wordprocessor} ;# Required for Tk>=8.5
  foreach tag {add rm chng} {
    $txt tag config $tag -background $CFG([string toupper $tag]_BG)
    $txt tag lower $tag
  }
  $txt tag config fn -background $CFG(FN_BG) -foreground $CFG(FN_FG) \
    -justify center
  $txt tag config err -foreground $CFG(ERR_FG)
}
text .mkr

foreach c [cols] {
  set keyPrefix [string toupper [colType $c]]_COL_
  if {[tk windowingsystem] eq "win32"} {$c config -font {courier 9}}
  $c config -bg $CFG(${keyPrefix}BG) -fg $CFG(${keyPrefix}FG) -borderwidth 0 \
    -padx $CFG(PADX) -yscroll sync-y
  $c tag config hrln -spacing1 $CFG(HR_PAD_TOP) -spacing3 $CFG(HR_PAD_BTM) \
     -foreground $CFG(HR_FG) -justify right
  $c tag config hrtxt  -spacing1 $CFG(HR_PAD_TOP) -spacing3 $CFG(HR_PAD_BTM) \
     -foreground $CFG(HR_FG) -justify center
  $c tag config fn -spacing1 $CFG(FN_PAD) -spacing3 $CFG(FN_PAD)
  bindtags $c ". $c Text all"
  bind $c <1> {focus %W}
}

::ttk::scrollbar .sby -command {.txtA yview} -orient vertical
::ttk::scrollbar .sbxA -command {.txtA xview} -orient horizontal
::ttk::scrollbar .sbxB -command {.txtB xview} -orient horizontal
frame .spacer

if {[readDiffs $fossilcmd] == 0} {
  tk_messageBox -type ok -title $CFG(TITLE) -message "No changes"
  exit
}
update idletasks

proc saveDiff {} {
  set fn [tk_getSaveFile]
  if {$fn==""} return
  set out [open $fn wb]
  puts $out "#!/usr/bin/tclsh\n#\n# Run this script using 'tclsh' or 'wish'"
  puts $out "# to see the graphical diff.\n#"
  puts $out "set fossilcmd {}"
  puts $out "set prog [list $::prog]"
  puts $out "set difftxt \173"
  foreach e $::difftxt {puts $out [list $e]}
  puts $out "\175"
  puts $out "eval \$prog"
  close $out
}
proc invertDiff {} {
  global CFG
  array set x [grid info .txtA]
  if {$x(-column)==1} {
    grid config .lnB -column 0
    grid config .txtB -column 1
    .txtB tag config add -background $CFG(RM_BG)
    grid config .lnA -column 3
    grid config .txtA -column 4
    .txtA tag config rm -background $CFG(ADD_BG)
    .bb.invert config -text Uninvert
  } else {
    grid config .lnA -column 0
    grid config .txtA -column 1
    .txtA tag config rm -background $CFG(RM_BG)
    grid config .lnB -column 3
    grid config .txtB -column 4
    .txtB tag config add -background $CFG(ADD_BG)
    .bb.invert config -text Invert
  }
  .mkr config -state normal
  set clt [.mkr search -all < 1.0 end]
  set cgt [.mkr search -all > 1.0 end]
  foreach c $clt {.mkr replace $c "$c +1 chars" >}
  foreach c $cgt {.mkr replace $c "$c +1 chars" <}
  .mkr config -state disabled
}
proc searchOnOff {} {
  if {[info exists ::search]} {
    unset ::search
    .txtA tag remove search 1.0 end
    .txtB tag remove search 1.0 end
    pack forget .bb.sframe
    focus .
  } else {
    set ::search .txtA
    if {![winfo exists .bb.sframe]} {
      frame .bb.sframe
      ::ttk::entry .bb.sframe.e -width 10
      pack .bb.sframe.e -side left -fill y -expand 1
      bind .bb.sframe.e <Return> {searchNext; break}
      ::ttk::button .bb.sframe.nx -text \u2193 -width 1 -command searchNext
      ::ttk::button .bb.sframe.pv -text \u2191 -width 1 -command searchPrev
      tk_optionMenu .bb.sframe.typ ::search_type \
           Exact {No Case} {RegExp} {Whole Word}
      .bb.sframe.typ config -width 10
      set ::search_type Exact
      pack .bb.sframe.nx .bb.sframe.pv .bb.sframe.typ -side left
    }
    pack .bb.sframe -side left
    after idle {focus .bb.sframe.e}
  }
}
proc searchNext {} {searchStep -forwards +1 1.0 end}
proc searchPrev {} {searchStep -backwards -1 end 1.0}
proc searchStep {direction incr start stop} {
  set pattern [.bb.sframe.e get]
  if {$pattern==""} return
  set count 0
  set w $::search
  if {"$w"==".txtA"} {set other .txtB} {set other .txtA}
  if {[lsearch [$w mark names] search]<0} {
    $w mark set search $start
  }
  switch $::search_type {
    Exact        {set st -exact}
    {No Case}    {set st -nocase}
    {RegExp}     {set st -regexp}
    {Whole Word} {set st -regexp; set pattern \\y$pattern\\y}
  }
  set idx [$w search -count count $direction $st -- \
              $pattern "search $incr chars" $stop]
  if {"$idx"==""} {
    set idx [$other search -count count $direction $st -- $pattern $start $stop]
    if {"$idx"!=""} {
      set this $w
      set w $other
      set other $this
    } else {
      set idx [$w search -count count $direction $st -- $pattern $start $stop]
    }
  }
  $w tag remove search 1.0 end
  $w mark unset search
  $other tag remove search 1.0 end
  $other mark unset search
  if {"$idx"!=""} {
    $w mark set search $idx
    $w yview -pickplace $idx
    $w tag add search search "$idx +$count chars"
    $w tag config search -background {#fcc000}
  }
  set ::search $w
}
::ttk::button .bb.quit -text {Quit} -command exit
::ttk::button .bb.invert -text {Invert} -command invertDiff
::ttk::button .bb.save -text {Save As...} -command saveDiff
::ttk::button .bb.search -text {Search} -command searchOnOff
pack .bb.quit .bb.invert -side left
if {$fossilcmd!=""} {pack .bb.save -side left}
pack .bb.files .bb.search -side left
grid rowconfigure . 1 -weight 1
grid columnconfigure . 1 -weight 1
grid columnconfigure . 4 -weight 1
grid .bb -row 0 -columnspan 6
eval grid [cols] -row 1 -sticky nsew
grid .sby -row 1 -column 5 -sticky ns
grid .sbxA -row 2 -columnspan 2 -sticky ew
grid .spacer -row 2 -column 2
grid .sbxB -row 2 -column 3 -columnspan 2 -sticky ew

.spacer config -height [winfo height .sbxA]
wm deiconify .
}
eval $prog
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**
** This file contains code used to implement the "diff" command
*/
#include "config.h"
#include "diffcmd.h"
#include <assert.h>

/* includes needed to catch interrupts */
#ifdef _WIN32
# include <windows.h>
#else
# include <signal.h>
#endif

/*
** Use the right null device for the platform.
*/
#if defined(_WIN32)
#  define NULL_DEVICE "NUL"
#else
#  define NULL_DEVICE "/dev/null"
#endif
** Shell-escape the given string.  Append the result to a blob.

/*
** Used when the name for the diff is unknown.
*/
#define DIFF_NO_NAME  "(unknown)"

/*
** Use the "exec-rel-paths" setting and the --exec-abs-paths and
** --exec-rel-paths command line options to determine whether
** certain external commands are executed using relative paths.
*/
static int determine_exec_relative_option(int force){
  static int relativePaths = -1;
  if( force || relativePaths==-1 ){
    int relPathOption = find_option("exec-rel-paths", 0, 0)!=0;
    int absPathOption = find_option("exec-abs-paths", 0, 0)!=0;
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
    relativePaths = db_get_boolean("exec-rel-paths", 1);
#else
    relativePaths = db_get_boolean("exec-rel-paths", 0);
#endif
    if( relPathOption ){ relativePaths = 1; }
    if( absPathOption ){ relativePaths = 0; }
  }
  return relativePaths;
}

#if INTERFACE
/*
** An array of FileDirList objects describe the files and directories listed
** on the command line of a "diff" command.  Only those objects listed are
** actually diffed.
*/
struct FileDirList {
  int nUsed;       /* Number of times each entry is used */
  int nName;       /* Length of the entry */
  char *zName;     /* Text of the entry */
};
#endif

/*
** Return true if zFile is a file named on the azInclude[] list or is
** a file in a directory named on the azInclude[] list.
**
** if azInclude is NULL, then always include zFile.
*/
static void shell_escape(Blob *pBlob, const char *zIn){
  int n = blob_size(pBlob);
  int k = strlen(zIn);
  int i, c;
  char *z;
  for(i=0; (c = zIn[i])!=0; i++){
    if( isspace(c) || c=='"' || (c=='\\' && zIn[i+1]!=0) ){
      blob_appendf(pBlob, "\"%s\"", zIn);
      z = blob_buffer(pBlob);
      for(i=n+1; i<=n+k; i++){
        if( z[i]=='"' ) z[i] = '_';
      }
      return;
    }
  }
  blob_append(pBlob, zIn, -1);
}

static int file_dir_match(FileDirList *p, const char *zFile){
  if( p==0 || strcmp(p->zName,".")==0 ) return 1;
  if( filenames_are_case_sensitive() ){
    while( p->zName ){
      if( strcmp(zFile, p->zName)==0
       || (strncmp(zFile, p->zName, p->nName)==0
           && zFile[p->nName]=='/')
      ){
        break;
      }
      p++;
    }
  }else{
    while( p->zName ){
      if( fossil_stricmp(zFile, p->zName)==0
       || (fossil_strnicmp(zFile, p->zName, p->nName)==0
           && zFile[p->nName]=='/')
      ){
        break;
      }
      p++;
    }
  }
  if( p->zName ){
    p->nUsed++;
    return 1;
  }
  return 0;
}

/*
** Print details about the compared versions - possibly the working directory
** or the undo buffer.  For check-ins, show hash and commit time.
**
** This is intended primarily to go into the "header garbage" that is ignored
** by patch(1).
**
** zFrom and zTo are interpreted as symbolic version names, unless they
** start with '(', in which case they are printed directly.
*/
void diff_print_versions(const char *zFrom, const char *zTo, DiffConfig *pCfg){
  if( (pCfg->diffFlags & (DIFF_SIDEBYSIDE|DIFF_BRIEF|DIFF_NUMSTAT|
        DIFF_HTML|DIFF_WEBPAGE|DIFF_BROWSER|DIFF_JSON|DIFF_TCL))==0 ){
    fossil_print("Fossil-Diff-From:  %s\n",
      zFrom[0]=='(' ? zFrom : mprintf("%S %s",
        rid_to_uuid(symbolic_name_to_rid(zFrom, "ci")),
        db_text("","SELECT datetime(%f)||' UTC'",
          symbolic_name_to_mtime(zFrom, 0))));
    fossil_print("Fossil-Diff-To:    %s\n",
      zTo[0]=='(' ? zTo : mprintf("%S %s",
        rid_to_uuid(symbolic_name_to_rid(zTo, "ci")),
        db_text("","SELECT datetime(%f)||' UTC'",
          symbolic_name_to_mtime(zTo, 0))));
    fossil_print("%.66c\n", '-');
  }
}

/*
** Print the "Index:" message that patches wants to see at the top of a diff.
*/
void diff_print_index(const char *zFile, DiffConfig *pCfg, Blob *pOut){
  if( (pCfg->diffFlags &
          (DIFF_SIDEBYSIDE|DIFF_BRIEF|DIFF_NUMSTAT|DIFF_JSON|
           DIFF_WEBPAGE|DIFF_TCL))==0
  ){
    blob_appendf(pOut, "Index: %s\n%.66c\n", zFile, '=');
  }
}

/*
** Print the +++/--- filename lines or whatever filename information
** is appropriate for the output format.
**
*/
void diff_print_filenames(
  const char *zLeft,      /* Name of the left file */
  const char *zRight,     /* Name of the right file */
  DiffConfig *pCfg,       /* Diff configuration */
  Blob *pOut              /* Write to this blob, or stdout of this is NULL */
){
  u64 diffFlags = pCfg->diffFlags;
  /* Standardize on /dev/null, regardless of platform. */
  if( pCfg->diffFlags & DIFF_FILE_ADDED ) zLeft = "/dev/null";
  if( pCfg->diffFlags & DIFF_FILE_DELETED ) zRight = "/dev/null";
  if( diffFlags & (DIFF_BRIEF|DIFF_RAW) ){
    /* no-op */
  }else if( diffFlags & DIFF_DEBUG ){
    blob_appendf(pOut, "FILE-LEFT   %s\nFILE-RIGHT  %s\n", zLeft, zRight);
  }else if( diffFlags & DIFF_WEBPAGE ){
    if( fossil_strcmp(zLeft,zRight)==0 ){
      blob_appendf(pOut,"<h1>%h</h1>\n", zLeft);
    }else{
      blob_appendf(pOut,"<h1>%h &lrarr; %h</h1>\n", zLeft, zRight);
    }
  }else if( diffFlags & (DIFF_TCL|DIFF_JSON) ){
    if( diffFlags & DIFF_TCL ){
      blob_append(pOut, "FILE ", 5);
      blob_append_tcl_literal(pOut, zLeft, (int)strlen(zLeft));
      blob_append_char(pOut, ' ');
      blob_append_tcl_literal(pOut, zRight, (int)strlen(zRight));
      blob_append_char(pOut, '\n');
    }else{
      if( pOut ) blob_trim(pOut);
      blob_append(pOut, (pCfg->nFile==0 ? "[{" : ",\n{"), -1);
      pCfg->nFile++;
      blob_append(pOut, "\n  \"leftname\":", -1);
      blob_append_json_literal(pOut, zLeft, (int)strlen(zLeft));
      blob_append(pOut, ",\n  \"rightname\":", -1);
      blob_append_json_literal(pOut, zRight, (int)strlen(zRight));
      blob_append(pOut, ",\n  \"diff\":\n", -1);
    }
  }else if( diffFlags & DIFF_SIDEBYSIDE ){
    int w = diff_width(pCfg);
    int n1 = strlen(zLeft);
    int n2 = strlen(zRight);
    int x;
    if( n1==n2 && fossil_strcmp(zLeft,zRight)==0 ){
      if( n1>w*2 ) n1 = w*2;
      x = w*2+17 - (n1+2);
      blob_appendf(pOut, "%.*c %.*s %.*c\n",
                   x/2, '=', n1, zLeft, (x+1)/2, '=');
    }else{
      if( w<20 ) w = 20;
      if( n1>w-10 ) n1 = w - 10;
      if( n2>w-10 ) n2 = w - 10;
      blob_appendf(pOut, "%.*c %.*s %.*c versus %.*c %.*s %.*c\n",
                         (w-n1+10)/2, '=', n1, zLeft, (w-n1+1)/2, '=',
                         (w-n2)/2, '=', n2, zRight, (w-n2+1)/2, '=');
    }
  }else{
    blob_appendf(pOut, "--- %s\n+++ %s\n", zLeft, zRight);
  }
}


/*
** Default header texts for diff with --webpage
*/
static const char zWebpageHdr[] =
@ <!DOCTYPE html>
@ <html>
@ <head>
@ <meta charset="UTF-8">
@ <style>
@ body {
@    background-color: white;
@ }
@ h1 {
@   font-size: 150%;
@ }
@
@ table.diff {
@   width: 100%;
@   border-spacing: 0;
@   border: 1px solid black;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ table.diff td {
@   vertical-align: top;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ table.diff pre {
@   margin: 0 0 0 0;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.diffln {
@   width: 1px;
@   text-align: right;
@   padding: 0 1em 0 0;
@ }
@ td.difflne {
@   padding-bottom: 0.4em;
@ }
@ td.diffsep {
@   width: 1px;
@   padding: 0 0.3em 0 1em;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.diffsep pre {
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt pre {
@   overflow-x: auto;
@ }
@ td.diffln ins {
@   background-color: #a0e4b2;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.diffln del {
@   background-color: #ffc0c0;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt del {
@   background-color: #ffe8e8;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt del > del {
@   background-color: #ffc0c0;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ td.difftxt del > del.edit {
@   background-color: #c0c0ff;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ td.difftxt ins {
@   background-color: #dafbe1;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt ins > ins {
@   background-color: #a0e4b2;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ td.difftxt ins > ins.edit {
@   background-color: #c0c0ff;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ @media (prefers-color-scheme: dark) {
@   body {
@     background-color: #353535;
@     color: #ffffff;
@   }
@   td.diffln ins {
@     background-color: #559855;
@     color: #000000;
@   }
@   td.diffln del {
@     background-color: #cc5555;
@     color: #000000;
@   }
@   td.difftxt del {
@     background-color: #f9cfcf;
@     color: #000000;
@   }
@     td.difftxt del > del {
@     background-color: #cc5555;
@     color: #000000;
@   }
@   td.difftxt ins {
@     background-color: #a2dbb2;
@     color: #000000;
@   }
@   td.difftxt ins > ins {
@     background-color: #559855;
@   }
@ }
@
@ </style>
@ </head>
@ <body>
;
static const char zWebpageHdrDark[] =
@ <!DOCTYPE html>
@ <html>
@ <head>
@ <meta charset="UTF-8">
@ <style>
@ body {
@    background-color: #353535;
@    color: #ffffff;
@ }
@ h1 {
@   font-size: 150%;
@ }
@
@ table.diff {
@   width: 100%;
@   border-spacing: 0;
@   border: 1px solid black;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ table.diff td {
@   vertical-align: top;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ table.diff pre {
@   margin: 0 0 0 0;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.diffln {
@   width: 1px;
@   text-align: right;
@   padding: 0 1em 0 0;
@ }
@ td.difflne {
@   padding-bottom: 0.4em;
@ }
@ td.diffsep {
@   width: 1px;
@   padding: 0 0.3em 0 1em;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.diffsep pre {
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt pre {
@   overflow-x: auto;
@ }
@ td.diffln ins {
@   background-color: #559855;
@   color: #000000;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.diffln del {
@   background-color: #cc5555;
@   color: #000000;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt del {
@   background-color: #f9cfcf;
@   color: #000000;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt del > del {
@   background-color: #cc5555;
@   color: #000000;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ td.difftxt del > del.edit {
@   background-color: #c0c0ff;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ td.difftxt ins {
@   background-color: #a2dbb2;
@   color: #000000;
@   text-decoration: none;
@   line-height: inherit;
@   font-size: inherit;
@ }
@ td.difftxt ins > ins {
@   background-color: #559855;
@   text-decoration: none;
@   font-weight: bold;
@ }
@ td.difftxt ins > ins.edit {
@   background-color: #c0c0ff;
@   text-decoration: none;
@   font-weight: bold;
@ }
@
@ </style>
@ </head>
@ <body>
;
const char zWebpageEnd[] =
@ </body>
@ </html>
;

/*
** State variables used by the --browser option for diff.  These must
** be static variables, not elements of DiffConfig, since they are
** used by the interrupt handler.
*/
static char *tempDiffFilename;  /* File holding the diff HTML */
static FILE *diffOut;           /* Open to write into tempDiffFilename */
** This function implements a cross-platform "system()" interface.

/* Amount of delay (in milliseconds) between launching the
** web browser and deleting the temporary file used by --browser
*/
#ifndef FOSSIL_BROWSER_DIFF_DELAY
# define FOSSIL_BROWSER_DIFF_DELAY 5000  /* 5 seconds by default */
#endif
int portable_system(const char *zOrigCmd){
  int rc;
#ifdef __MINGW32__
  /* On windows, we have to put double-quotes around the entire command.
  ** Who knows why - this is just the way windows works.
  */
  char *zNewCmd = mprintf("\"%s\"", zOrigCmd);
  rc = system(zNewCmd);

/*
** If we catch a single while writing the temporary file for the --browser
** diff output, then delete the temporary file and exit.
*/
static void diff_www_interrupt(int NotUsed){
  (void)NotUsed;
  if( diffOut ) fclose(diffOut);
  if( tempDiffFilename ) file_delete(tempDiffFilename);
  exit(1);
}
#ifdef _WIN32
static BOOL WINAPI diff_console_ctrl_handler(DWORD dwCtrlType){
  if( dwCtrlType==CTRL_C_EVENT ) diff_www_interrupt(0);
  return FALSE;
}
#endif


/*
** Do preliminary setup and output before computing a diff.
**
** For --browser, redirect stdout to a temporary file that will
** hold the result.  Make arrangements to delete that temporary
** file if the diff is interrupted.
**
** For --browser and --webpage, output the HTML header.
*/
void diff_begin(DiffConfig *pCfg){
  if( (pCfg->diffFlags & DIFF_BROWSER)!=0 ){
    tempDiffFilename = fossil_temp_filename();
    tempDiffFilename = sqlite3_mprintf("%z.html", tempDiffFilename);
    diffOut = fossil_freopen(tempDiffFilename,"wb",stdout);
    if( diffOut==0 ){
      fossil_fatal("unable to create temporary file \"%s\"",
                   tempDiffFilename);
  free(zNewCmd);
    }
#ifndef _WIN32
    signal(SIGINT, diff_www_interrupt);
#else
    SetConsoleCtrlHandler(diff_console_ctrl_handler, TRUE);
#endif
  }
  if( (pCfg->diffFlags & DIFF_WEBPAGE)!=0 ){
    fossil_print("%s",(pCfg->diffFlags & DIFF_DARKMODE)!=0 ? zWebpageHdrDark :
                                                             zWebpageHdr);
    fflush(stdout);
  }
}
  /* On unix, evaluate the command directly.
  */
  rc = system(zOrigCmd);
#endif 
  return rc; 

/* Do any final output required by a diff and complete the diff
** process.
**
** For --browser and --webpage, output any javascript required by
** the diff.  (Currently JS is only needed for side-by-side diffs).
**
** For --browser, close the connection to the temporary file, then
** launch a web browser to view the file.  After a delay
** of FOSSIL_BROWSER_DIFF_DELAY milliseconds, delete the temp file.
*/
void diff_end(DiffConfig *pCfg, int nErr){
  if( (pCfg->diffFlags & DIFF_WEBPAGE)!=0 ){
    if( pCfg->diffFlags & DIFF_SIDEBYSIDE ){
      const unsigned char *zJs = builtin_file("diff.js", 0);
      fossil_print("<script>\n%s</script>\n", zJs);
    }
    fossil_print("%s", zWebpageEnd);
  }
  if( (pCfg->diffFlags & DIFF_BROWSER)!=0 && nErr==0 ){
    char *zCmd = mprintf("%s %$", fossil_web_browser(), tempDiffFilename);
    fclose(diffOut);
    diffOut = fossil_freopen(NULL_DEVICE, "wb", stdout);
    fossil_system(zCmd);
    fossil_free(zCmd);
    diffOut = 0;
    sqlite3_sleep(FOSSIL_BROWSER_DIFF_DELAY);
    file_delete(tempDiffFilename);
    sqlite3_free(tempDiffFilename);
    tempDiffFilename = 0;
  }
  if( (pCfg->diffFlags & DIFF_JSON)!=0 && pCfg->nFile>0 ){
    fossil_print("]\n");
  }
}

/*
** Show the difference between two files, one in memory and one on disk.
**
** The difference is the set of edits needed to transform pFile1 into
** zFile2.  The content of pFile1 is in memory.  zFile2 exists on disk.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
*/
static void diff_file(
void diff_file(
  Blob *pFile1,             /* In memory content to compare from */
  const char *zFile2,       /* On disk content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd      /* Command for comparison */
  DiffConfig *pCfg,         /* Flags to control the diff */
  Blob *pOut            /* Blob to store diff output */
){
  if( zDiffCmd==0 ){
    Blob out;      /* Diff output text */
    Blob file2;    /* Content of zFile2 */
  if( pCfg->zDiffCmd==0 ){
    Blob out;                 /* Diff output text */
    Blob file2;               /* Content of zFile2 */
    const char *zName2;       /* Name of zFile2 for display */

    /* Read content of zFile2 into memory */
    blob_zero(&file2);
    if( pCfg->diffFlags & DIFF_FILE_DELETED || file_size(zFile2, ExtFILE)<0 ){
      zName2 = NULL_DEVICE;
    }else{
    blob_read_from_file(&file2, zFile2);

      blob_read_from_file(&file2, zFile2, ExtFILE);
      zName2 = zName;
    }

    /* Compute and output the differences */
    if( pCfg->diffFlags & DIFF_BRIEF ){
      if( blob_compare(pFile1, &file2) ){
        fossil_print("CHANGED  %s\n", zName);
      }
    }else{
    blob_zero(&out);
    text_diff(pFile1, &file2, &out, 5);
    printf("--- %s\n+++ %s\n", zName, zName);
    printf("%s\n", blob_str(&out));
      blob_zero(&out);
      text_diff(pFile1, &file2, &out, pCfg);
      if( blob_size(&out) ){
        if( pCfg->diffFlags & DIFF_NUMSTAT ){
          blob_appendf(pOut, "%s %s\n", blob_str(&out), zName);
        }else{
          diff_print_filenames(zName, zName2, pCfg, pOut);
          blob_appendf(pOut, "%s\n", blob_str(&out));
        }
      }
      blob_reset(&out);
    }

    /* Release memory resources */
    blob_reset(&file2);
    blob_reset(&out);
  }else{
    int cnt = 0;
    Blob nameFile1;    /* Name of temporary file to old pFile1 content */
    Blob cmd;          /* Text of command to run */
    int useTempfile = 1;

    if( (pCfg->diffFlags & DIFF_INCBINARY)==0 ){
      Blob file2;
      if( looks_like_binary(pFile1) ){
        fossil_print("%s",DIFF_CANNOT_COMPUTE_BINARY);
        return;
      }
      if( pCfg->zBinGlob ){
        Glob *pBinary = glob_create(pCfg->zBinGlob);
        if( glob_match(pBinary, zName) ){
          fossil_print("%s",DIFF_CANNOT_COMPUTE_BINARY);
          glob_free(pBinary);
          return;
        }
        glob_free(pBinary);
      }
      blob_zero(&file2);
      if( file_size(zFile2, ExtFILE)>=0 ){
        blob_read_from_file(&file2, zFile2, ExtFILE);
      }
      if( looks_like_binary(&file2) ){
        fossil_print("%s",DIFF_CANNOT_COMPUTE_BINARY);
        blob_reset(&file2);
        return;
      }
      blob_reset(&file2);
    }

    /* Construct a temporary file to hold pFile1 based on the name of
    ** zFile2 */
    blob_zero(&nameFile1);
    file_tempname(&nameFile1, zFile2, "orig");
    do{
      blob_reset(&nameFile1);
      blob_appendf(&nameFile1, "%s~%d", zFile2, cnt++);
#if !defined(_WIN32)
    /* On Unix, use /dev/null for added or deleted files. */
    if( pCfg->diffFlags & DIFF_FILE_ADDED ){
      blob_init(&nameFile1, NULL_DEVICE, -1);
      useTempfile = 0;
    }else if( pCfg->diffFlags & DIFF_FILE_DELETED ){
      zFile2 = NULL_DEVICE;
    }while( access(blob_str(&nameFile1),0)==0 );
    blob_write_to_file(pFile1, blob_str(&nameFile1));
    }
#endif
    if( useTempfile ) blob_write_to_file(pFile1, blob_str(&nameFile1));

    /* Construct the external diff command */
    blob_zero(&cmd);
    blob_appendf(&cmd, "%s ", zDiffCmd);
    shell_escape(&cmd, blob_str(&nameFile1));
    blob_append(&cmd, " ", 1);
    shell_escape(&cmd, zFile2);
    blob_append(&cmd, pCfg->zDiffCmd, -1);
    if( pCfg->diffFlags & DIFF_INVERT ){
      blob_append_escaped_arg(&cmd, zFile2, 1);
      blob_append_escaped_arg(&cmd, blob_str(&nameFile1), 1);
    }else{
      blob_append_escaped_arg(&cmd, blob_str(&nameFile1), 1);
      blob_append_escaped_arg(&cmd, zFile2, 1);
    }

    /* Run the external diff command */
    portable_system(blob_str(&cmd));
    fossil_system(blob_str(&cmd));

    /* Delete the temporary file and clean up memory used */
    unlink(blob_str(&nameFile1));
    if( useTempfile ) file_delete(blob_str(&nameFile1));
    blob_reset(&nameFile1);
    blob_reset(&cmd);
  }
}

/*
** Show the difference between two files, both in memory.
**
** The difference is the set of edits needed to transform pFile1 into
** pFile2.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary.  If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_file_mem(
void diff_file_mem(
  Blob *pFile1,             /* In memory content to compare from */
  Blob *pFile2,             /* In memory content to compare to */
  const char *zName,        /* Display name of the file */
  const char *zDiffCmd      /* Command for comparison */
  DiffConfig *pCfg          /* Diff flags */
){
  if( pCfg->diffFlags & DIFF_BRIEF ) return;
  if( zDiffCmd==0 ){
  if( pCfg->zDiffCmd==0 ){
    Blob out;      /* Diff output text */

    blob_zero(&out);
    text_diff(pFile1, pFile2, &out, 5);
    printf("--- %s\n+++ %s\n", zName, zName);
    printf("%s\n", blob_str(&out));

    text_diff(pFile1, pFile2, &out, pCfg);
    if( pCfg->diffFlags & DIFF_NUMSTAT ){
      fossil_print("%s %s\n", blob_str(&out), zName);
    }else{
      diff_print_filenames(zName, zName, pCfg, 0);
      fossil_print("%s\n", blob_str(&out));
    }

    /* Release memory resources */
    blob_reset(&out);
  }else{
    Blob cmd;
    char zTemp1[300];
    char zTemp2[300];

    /* Construct a temporary file names */
    file_tempname(sizeof(zTemp1), zTemp1);
    file_tempname(sizeof(zTemp2), zTemp2);
    blob_write_to_file(pFile1, zTemp1);
    blob_write_to_file(pFile2, zTemp2);
    Blob temp1;
    Blob temp2;
    int useTempfile1 = 1;
    int useTempfile2 = 1;

    if( (pCfg->diffFlags & DIFF_INCBINARY)==0 ){
      if( looks_like_binary(pFile1) || looks_like_binary(pFile2) ){
        fossil_print("%s",DIFF_CANNOT_COMPUTE_BINARY);
        return;
      }
      if( pCfg->zBinGlob ){
        Glob *pBinary = glob_create(pCfg->zBinGlob);
        if( glob_match(pBinary, zName) ){
          fossil_print("%s",DIFF_CANNOT_COMPUTE_BINARY);
          glob_free(pBinary);
          return;
        }
        glob_free(pBinary);
      }
    }

    /* Construct temporary file names */
    file_tempname(&temp1, zName, "before");
    file_tempname(&temp2, zName, "after");
#if !defined(_WIN32)
    /* On Unix, use /dev/null for added or deleted files. */
    if( pCfg->diffFlags & DIFF_FILE_ADDED ){
      useTempfile1 = 0;
      blob_init(&temp1, NULL_DEVICE, -1);
    }else if( pCfg->diffFlags & DIFF_FILE_DELETED ){
      useTempfile2 = 0;
      blob_init(&temp2, NULL_DEVICE, -1);
    }
#endif
    if( useTempfile1 ) blob_write_to_file(pFile1, blob_str(&temp1));
    if( useTempfile2 ) blob_write_to_file(pFile2, blob_str(&temp2));

    /* Construct the external diff command */
    blob_zero(&cmd);
    blob_appendf(&cmd, "%s ", zDiffCmd);
    shell_escape(&cmd, zTemp1);
    blob_append(&cmd, " ", 1);
    shell_escape(&cmd, zTemp2);
    blob_append(&cmd, pCfg->zDiffCmd, -1);
    blob_append_escaped_arg(&cmd, blob_str(&temp1), 1);
    blob_append_escaped_arg(&cmd, blob_str(&temp2), 1);

    /* Run the external diff command */
    portable_system(blob_str(&cmd));
    fossil_system(blob_str(&cmd));

    /* Delete the temporary file and clean up memory used */
    if( useTempfile1 ) file_delete(blob_str(&temp1));
    if( useTempfile2 ) file_delete(blob_str(&temp2));

    unlink(zTemp1);
    unlink(zTemp2);
    blob_reset(&temp1);
    blob_reset(&temp2);
    blob_reset(&cmd);
  }
}

/*
** Do a diff against a single file named in g.argv[2] from version zFrom
** against the same file on disk.
** Return true if the disk file is identical to the Blob.  Return zero
** if the files differ in any way.
*/
static void diff_one_against_disk(const char *zFrom, const char *zDiffCmd){
  Blob fname;
  Blob content;
  file_tree_name(g.argv[2], &fname, 1);
  historical_version_of_file(zFrom, blob_str(&fname), &content, 0);
  diff_file(&content, g.argv[2], g.argv[2], zDiffCmd);
  blob_reset(&content);
  blob_reset(&fname);
static int file_same_as_blob(Blob *blob, const char *zDiskFile){
  Blob file;
  int rc = 0;
  if( blob_size(blob)!=file_size(zDiskFile, ExtFILE) ) return 0;
  blob_zero(&file);
  blob_read_from_file(&file, zDiskFile, ExtFILE);
  if( blob_size(&file)!=blob_size(blob) ){
    rc = 0;
  }else{
    rc = memcmp(blob_buffer(&file), blob_buffer(blob), blob_size(&file))==0;
  }
  blob_reset(&file);
  return rc;
}

/*
** Run a diff between the version zFrom and files on disk.  zFrom might
** be NULL which means to simply show the difference between the edited
** files on disk and the check-out on which they are based.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary.  If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_all_against_disk(const char *zFrom, const char *zDiffCmd){
void diff_against_disk(
  const char *zFrom,        /* Version to difference from */
  DiffConfig *pCfg,         /* Flags controlling diff output */
  FileDirList *pFileDir,    /* Which files to diff */
  Blob *pOut            /* Blob to output diff instead of stdout */
){
  int vid;
  Blob sql;
  Stmt q;
  int asNewFile;            /* Treat non-existant files as empty files */
  int isNumStat;            /* True for --numstat */

  asNewFile = (pCfg->diffFlags & (DIFF_VERBOSE|DIFF_NUMSTAT|DIFF_HTML))!=0;
  isNumStat = (pCfg->diffFlags & (DIFF_NUMSTAT|DIFF_TCL|DIFF_HTML))!=0;
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 1);
  vfile_check_signature(vid, CKSIG_ENOTFILE);
  blob_zero(&sql);
  db_begin_transaction();
  if( zFrom ){
    int rid = name_to_rid(zFrom);
    int rid = name_to_typed_rid(zFrom, "ci");
    if( !is_a_version(rid) ){
      fossil_fatal("no such check-in: %s", zFrom);
    }
    load_vfile_from_rid(rid);
    blob_appendf(&sql,
      "SELECT v2.pathname, v2.deleted, v2.chnged, v2.rid==0, v1.rid"
    blob_append_sql(&sql,
      "SELECT v2.pathname, v2.deleted, v2.chnged, v2.rid==0, v1.rid, v1.islink"
      "  FROM vfile v1, vfile v2 "
      " WHERE v1.pathname=v2.pathname AND v1.vid=%d AND v2.vid=%d"
      "   AND (v2.deleted OR v2.chnged OR v1.rid!=v2.rid)"
      "   AND (v2.deleted OR v2.chnged OR v1.mrid!=v2.rid)"
      "UNION "
      "SELECT pathname, 1, 0, 0, 0"
      "SELECT pathname, 1, 0, 0, 0, islink"
      "  FROM vfile v1"
      " WHERE v1.vid=%d"
      "   AND NOT EXISTS(SELECT 1 FROM vfile v2"
                        " WHERE v2.vid=%d AND v2.pathname=v1.pathname)"
      "UNION "
      "SELECT pathname, 0, 0, 1, 0"
      "SELECT pathname, 0, 0, 1, 0, islink"
      "  FROM vfile v2"
      " WHERE v2.vid=%d"
      "   AND NOT EXISTS(SELECT 1 FROM vfile v1"
                        " WHERE v1.vid=%d AND v1.pathname=v2.pathname)"
      " ORDER BY 1",
      " ORDER BY 1 /*scan*/",
      rid, vid, rid, vid, vid, rid
    );
  }else{
    blob_appendf(&sql,
      "SELECT pathname, deleted, chnged , rid==0, rid"
    blob_append_sql(&sql,
      "SELECT pathname, deleted, chnged , rid==0, rid, islink"
      "  FROM vfile"
      " WHERE vid=%d"
      "   AND (deleted OR chnged OR rid==0)"
      " ORDER BY pathname",
      " ORDER BY pathname /*scan*/",
      vid
    );
  }
  if( (pCfg->diffFlags & DIFF_SHOW_VERS)!=0 ){
    diff_print_versions(zFrom ? zFrom : db_lget("checkout-hash", 0),
      "(workdir)", pCfg);
  }
  db_prepare(&q, blob_str(&sql));
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_reset(&sql);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3);
    int srcid = db_column_int(&q, 4);
    int isLink = db_column_int(&q, 5);
    char *zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    const char *zFullName;
    int showDiff = 1;
    Blob fname;

    if( !file_dir_match(pFileDir, zPathname) ) continue;
    if( determine_exec_relative_option(0) ){
      blob_zero(&fname);
      file_relative_name(zPathname, &fname, 1);
    }else{
      blob_set(&fname, g.zLocalRoot);
      blob_append(&fname, zPathname, -1);
    }
    zFullName = blob_str(&fname);
    pCfg->diffFlags &= (~DIFF_FILE_MASK);
    if( isDeleted ){
      printf("DELETED  %s\n", zPathname);
    }else if( access(zFullName, 0) ){
      printf("MISSING  %s\n", zPathname);
      if( !isNumStat ){ fossil_print("DELETED  %s\n", zPathname); }
      pCfg->diffFlags |= DIFF_FILE_DELETED;
      if( !asNewFile ){ showDiff = 0; zFullName = NULL_DEVICE; }
    }else if( file_access(zFullName, F_OK) ){
      if( !isNumStat ){ fossil_print("MISSING  %s\n", zPathname); }
      if( !asNewFile ){ showDiff = 0; }
    }else if( isNew ){
      printf("ADDED    %s\n", zPathname);
    }else if( isDeleted ){
      printf("DELETED  %s\n", zPathname);
    }else if( isChnged==3 ){
      printf("ADDED_BY_MERGE %s\n", zPathname);
      if( !isNumStat ){ fossil_print("ADDED    %s\n", zPathname); }
      pCfg->diffFlags |= DIFF_FILE_ADDED;
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }else if( isChnged==3 ){
      if( !isNumStat ){ fossil_print("ADDED_BY_MERGE %s\n", zPathname); }
      pCfg->diffFlags |= DIFF_FILE_ADDED;
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }else if( isChnged==5 ){
      if( !isNumStat ){ fossil_print("ADDED_BY_INTEGRATE %s\n", zPathname); }
    }else{
      int srcid = db_column_int(&q, 4);
      pCfg->diffFlags |= DIFF_FILE_ADDED;
      srcid = 0;
      if( !asNewFile ){ showDiff = 0; }
    }
    if( showDiff ){
      Blob content;
      if( !isLink != !file_islink(zFullName) ){
        diff_print_index(zPathname, pCfg, 0);
        diff_print_filenames(zPathname, zPathname, pCfg, 0);
        fossil_print("%s",DIFF_CANNOT_COMPUTE_SYMLINK);
        continue;
      }
      if( srcid>0 ){
      content_get(srcid, &content);
        content_get(srcid, &content);
      printf("Index: %s\n======================================="
             "============================\n",
             zPathname
      );
      diff_file(&content, zFullName, zPathname, zDiffCmd);
      }else{
        blob_zero(&content);
      }
      if( isChnged==0
       || pCfg->diffFlags & DIFF_FILE_DELETED
       || !file_same_as_blob(&content, zFullName)
      ){
        diff_print_index(zPathname, pCfg, pOut);
        diff_file(&content, zFullName, zPathname, pCfg, pOut);
      }
      blob_reset(&content);
    }
    free(zFullName);
    blob_reset(&fname);
  }
  db_finalize(&q);
  db_end_transaction(1);
  db_end_transaction(1);  /* ROLLBACK */
}

/*
** Run a diff between the undo buffer and files on disk.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary.  If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_against_undo(
  DiffConfig *pCfg,         /* Flags controlling diff output */
  FileDirList *pFileDir     /* List of files and directories to diff */
){
  Stmt q;
  Blob content;
  db_prepare(&q, "SELECT pathname, content FROM undo");
  blob_init(&content, 0, 0);
  if( (pCfg->diffFlags & DIFF_SHOW_VERS)!=0 ){
    diff_print_versions("(undo)", "(workdir)", pCfg);
  }
  while( db_step(&q)==SQLITE_ROW ){
    char *zFullName;
    const char *zFile = (const char*)db_column_text(&q, 0);
    if( !file_dir_match(pFileDir, zFile) ) continue;
    zFullName = mprintf("%s%s", g.zLocalRoot, zFile);
    db_column_blob(&q, 1, &content);
    diff_file(&content, zFullName, zFile, pCfg, 0);
    fossil_free(zFullName);
    blob_reset(&content);
  }
  db_finalize(&q);
}

/*
** Output the differences between two versions of a single file.
** zFrom and zTo are the check-ins containing the two file versions.
** The filename is contained in g.argv[2].
** Show the difference between two files identified by ManifestFile
** entries.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary.  If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_one_two_versions(
static void diff_manifest_entry(
  const char *zFrom,
  const char *zTo,
  const char *zDiffCmd
  struct ManifestFile *pFrom,
  struct ManifestFile *pTo,
  DiffConfig *pCfg
){
  char *zName;
  Blob fname;
  Blob v1, v2;
  file_tree_name(g.argv[2], &fname, 1);
  zName = blob_str(&fname);
  historical_version_of_file(zFrom, zName, &v1, 0);
  historical_version_of_file(zTo, zName, &v2, 0);
  diff_file_mem(&v1, &v2, zName, zDiffCmd);
  blob_reset(&v1);
  blob_reset(&v2);
  blob_reset(&fname);
  Blob f1, f2;
  int rid;
  const char *zName;
  if( pFrom ){
    zName = pFrom->zName;
  }else if( pTo ){
    zName = pTo->zName;
  }else{
    zName = DIFF_NO_NAME;
  }
  if( pCfg->diffFlags & DIFF_BRIEF ) return;
  diff_print_index(zName, pCfg, 0);
  if( pFrom ){
    rid = uuid_to_rid(pFrom->zUuid, 0);
    content_get(rid, &f1);
  }else{
    blob_zero(&f1);
  }
  if( pTo ){
    rid = uuid_to_rid(pTo->zUuid, 0);
    content_get(rid, &f2);
  }else{
    blob_zero(&f2);
  }
  diff_file_mem(&f1, &f2, zName, pCfg);
  blob_reset(&f1);
  blob_reset(&f2);
}

/*
** Output the differences between two check-ins.
**
** Use the internal diff logic if zDiffCmd is NULL.  Otherwise call the
** command zDiffCmd to do the diffing.
**
** When using an external diff program, zBinGlob contains the GLOB patterns
** for file names to treat as binary.  If fIncludeBinary is zero, these files
** will be skipped in addition to files that may contain binary content.
*/
static void diff_all_two_versions(
static void diff_two_versions(
  const char *zFrom,
  const char *zTo,
  const char *zDiffCmd
  DiffConfig *pCfg,
  FileDirList *pFileDir
){
  Manifest *pFrom, *pTo;
  ManifestFile *pFromFile, *pToFile;
  int asNewFlag = (pCfg->diffFlags & (DIFF_VERBOSE|DIFF_NUMSTAT))!=0 ? 1 : 0;

  pFrom = manifest_get_by_name(zFrom, 0);
  manifest_file_rewind(pFrom);
  pFromFile = manifest_file_next(pFrom,0);
  pTo = manifest_get_by_name(zTo, 0);
  manifest_file_rewind(pTo);
  pToFile = manifest_file_next(pTo,0);
  if( (pCfg->diffFlags & DIFF_SHOW_VERS)!=0 ){
    diff_print_versions(zFrom, zTo, pCfg);
  }
  while( pFromFile || pToFile ){
    int cmp;
    if( pFromFile==0 ){
      cmp = +1;
    }else if( pToFile==0 ){
      cmp = -1;
    }else{
      cmp = fossil_strcmp(pFromFile->zName, pToFile->zName);
    }
    pCfg->diffFlags &= (~DIFF_FILE_MASK);
    if( cmp<0 ){
      if( file_dir_match(pFileDir, pFromFile->zName) ){
        if( (pCfg->diffFlags & (DIFF_NUMSTAT|DIFF_HTML))==0 ){
          fossil_print("DELETED %s\n", pFromFile->zName);
        }
        pCfg->diffFlags |= DIFF_FILE_DELETED;
        if( asNewFlag ){
          diff_manifest_entry(pFromFile, 0, pCfg);
        }
      }
      pFromFile = manifest_file_next(pFrom,0);
    }else if( cmp>0 ){
      if( file_dir_match(pFileDir, pToFile->zName) ){
        if( (pCfg->diffFlags &
             (DIFF_NUMSTAT|DIFF_HTML|DIFF_TCL|DIFF_JSON))==0 ){
          fossil_print("ADDED   %s\n", pToFile->zName);
        }
        pCfg->diffFlags |= DIFF_FILE_ADDED;
        if( asNewFlag ){
          diff_manifest_entry(0, pToFile, pCfg);
        }
      }
      pToFile = manifest_file_next(pTo,0);
    }else if( fossil_strcmp(pFromFile->zUuid, pToFile->zUuid)==0 ){
      /* No changes */
      (void)file_dir_match(pFileDir, pFromFile->zName); /* Record name usage */
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }else{
      if( file_dir_match(pFileDir, pToFile->zName) ){
        if( pCfg->diffFlags & DIFF_BRIEF ){
          fossil_print("CHANGED %s\n", pFromFile->zName);
        }else{
          diff_manifest_entry(pFromFile, pToFile, pCfg);
        }
      }
      pFromFile = manifest_file_next(pFrom,0);
      pToFile = manifest_file_next(pTo,0);
    }
  }
  manifest_destroy(pFrom);
  manifest_destroy(pTo);
}

/*
** Return the name of the external diff command, or return NULL if
** no external diff command is defined.
*/
const char *diff_command_external(int guiDiff){
  const char *zDefault;
  const char *zName;

  if( guiDiff ){
#if defined(_WIN32)
    zDefault = "WinDiff.exe";
#else
    zDefault = 0;
#endif
    zName = "gdiff-command";
  }else{
    zDefault = 0;
    zName = "diff-command";
  }
  return db_get(zName, zDefault);
}

/*
** Show diff output in a Tcl/Tk window, in response to the --tk option
** to the diff command.
**
** If fossil has direct access to a Tcl interpreter (either loaded
** dynamically through stubs or linked in statically), we can use it
** directly. Otherwise:
** (1) Write the Tcl/Tk script used for rendering into a temp file.
** (2) Invoke "tclsh" on the temp file using fossil_system().
** (3) Delete the temp file.
*/
void diff_tk(const char *zSubCmd, int firstArg){
  int i;
  Blob script;
  const char *zTempFile = 0;
  char *zCmd;
  const char *zTclsh;
  int bDarkMode = find_option("dark",0,0)!=0;
  blob_zero(&script);
  blob_appendf(&script, "set fossilcmd {| \"%/\" %s -tcl -i -v",
               g.nameOfExe, zSubCmd);
  find_option("tcl",0,0);
  find_option("html",0,0);
  find_option("side-by-side","y",0);
  find_option("internal","i",0);
  find_option("verbose","v",0);
  zTclsh = find_option("tclsh",0,1);
  if( zTclsh==0 ){
    zTclsh = db_get("tclsh",0);
  }
  /* The undocumented --script FILENAME option causes the Tk script to
  ** be written into the FILENAME instead of being run.  This is used
  ** for testing and debugging. */
  zTempFile = find_option("script",0,1);
  for(i=firstArg; i<g.argc; i++){
    const char *z = g.argv[i];
    if( sqlite3_strglob("*}*",z) ){
      blob_appendf(&script, " {%/}", z);
    }else{
      int j;
      blob_append(&script, " ", 1);
      for(j=0; z[j]; j++) blob_appendf(&script, "\\%03o", (unsigned char)z[j]);
    }
  }
  blob_appendf(&script, "}\nset darkmode %d\n", bDarkMode);
  blob_appendf(&script, "%s", builtin_file("diff.tcl", 0));
  if( zTempFile ){
    blob_write_to_file(&script, zTempFile);
    fossil_print("To see diff, run: %s \"%s\"\n", zTclsh, zTempFile);
  }else{
#if defined(FOSSIL_ENABLE_TCL)
    Th_FossilInit(TH_INIT_DEFAULT);
    if( evaluateTclWithEvents(g.interp, &g.tcl, blob_str(&script),
                              blob_size(&script), 1, 1, 0)==TCL_OK ){
      blob_reset(&script);
      return;
    }
    /*
     * If evaluation of the Tcl script fails, the reason may be that Tk
     * could not be found by the loaded Tcl, or that Tcl cannot be loaded
     * dynamically (e.g. x64 Tcl with x86 Fossil).  Therefore, fallback
     * to using the external "tclsh", if available.
     */
#endif
    zTempFile = write_blob_to_temp_file(&script);
    zCmd = mprintf("%$ %$", zTclsh, zTempFile);
    fossil_system(zCmd);
    file_delete(zTempFile);
    fossil_free(zCmd);
  }
  blob_reset(&script);
}

/*
** Returns the GLOB pattern for file names that should be treated as binary
** by the diff subsystem, if any.
*/
const char *diff_get_binary_glob(void){
  const char *zBinGlob = find_option("binary", 0, 1);
  if( zBinGlob==0 ) zBinGlob = db_get("binary-glob",0);
  return zBinGlob;
}

/*
** COMMAND: diff
** COMMAND: gdiff
**
** Usage: %fossil diff|gdiff ?options? ?FILE?
** Usage: %fossil diff|gdiff ?OPTIONS? ?FILE1? ?FILE2 ...?
**
** Show the difference between the current version of FILE (as it
** exists on disk) and that same file as it was checked out.  Or
** if the FILE argument is omitted, show the unsaved changed currently
** in the working check-out.
** Show the difference between the current version of each of the FILEs
** specified (as they exist on disk) and that same file as it was checked-
** out.  Or if the FILE arguments are omitted, show all unsaved changes
** currently in the working check-out.
**
** The default output format is a "unified patch" (the same as the
** output of "diff -u" on most unix systems).  Many alternative formats
** are available.  A few of the more useful alternatives:
**
**    --tk              Pop up a Tcl/Tk-based GUI to show the diff
**    --by              Show a side-by-side diff in the default web browser
**    -b                Show a linear diff in the default web browser
**    -y                Show a text side-by-side diff
**    --webpage         Format output as HTML
**    --webpage -y      HTML output in the side-by-side format
**
** If the "--from VERSION" or "-r VERSION" option is used it specifies
** the source check-in for the diff operation.  If not specified, the 
** source check-in is the base check-in for the current check-out.
** The "--from VERSION" option is used to specify the source check-in
** for the diff operation.  If not specified, the source check-in is the
** base check-in for the current check-out. Similarly, the "--to VERSION"
** option specifies the check-in from which the second version of the file
** or files is taken.  If there is no "--to" option then the (possibly edited)
** files in the current check-out are used.  The "--checkin VERSION" option
** shows the changes made by check-in VERSION relative to its primary parent.
** The "--branch BRANCHNAME" shows all the changes on the branch BRANCHNAME.
**
** The "-i" command-line option forces the use of Fossil's own internal
** diff logic rather than any external diff program that might be configured
** using the "setting" command.  If no external diff program is configured,
** then the "-i" option is a no-op.  The "-i" option converts "gdiff" into
** "diff".
**
** The "--diff-binary" option enables or disables the inclusion of binary files
** when using an external diff program.
**
** The "--binary" option causes files matching the glob PATTERN to be treated
** as binary when considering if they should be used with the external diff
** program.  This option overrides the "binary-glob" setting.
**
** If the "--to VERSION" option appears, it specifies the check-in from
** These command show differences between managed files. Use the "fossil xdiff"
** which the second version of the file or files is taken.  If there is
** no "--to" option then the (possibly edited) files in the current check-out
** are used.
** command to see differences in unmanaged files.
**
** The "-i" command-line option forces the use of the internal diff logic
** rather than any external diff program that might be configured using
** the "setting" command.  If no external diff program is configured, then
** Options:
**   --binary PATTERN            Treat files that match the glob PATTERN
**                               as binary
**   --branch BRANCH             Show diff of all changes on BRANCH
**   --brief                     Show filenames only
**   -b|--browser                Show the diff output in a web-browser
**   --by                        Shorthand for "--browser -y"
**   -ci|--checkin VERSION       Show diff of all changes in VERSION
**   --command PROG              External diff program. Overrides "diff-command"
**   -c|--context N              Show N lines of context around each change,
**                               with negative N meaning show all content
**   --dark                      Use dark mode for the Tcl/Tk-based GUI and HTML
**   --diff-binary BOOL          Include binary files with external commands
**   --exec-abs-paths            Force absolute path names on external commands
**   --exec-rel-paths            Force relative path names on external commands
**   -r|--from VERSION           Select VERSION as source for the diff
**   -w|--ignore-all-space       Ignore white space when comparing lines
**   -i|--internal               Use internal diff logic
** the "-i" option is a no-op.  The "-i" option converts "gdiff" into "diff".
**   --invert                    Invert the diff
**   --json                      Output formatted as JSON
**   -n|--linenum                Show line numbers
**   -N|--new-file               Alias for --verbose
**   --numstat                   Show only the number of added and deleted lines
**   -y|--side-by-side           Side-by-side diff
**   --strip-trailing-cr         Strip trailing CR
**   --tcl                       Tcl-formated output used internally by --tk
**   --tclsh PATH                Tcl/Tk shell used for --tk (default: "tclsh")
**   --tk                        Launch a Tcl/Tk GUI for display
**   --to VERSION                Select VERSION as target for the diff
**   --undo                      Diff against the "undo" buffer
**   --unified                   Unified diff
**   -v|--verbose                Output complete text of added or deleted files
**   -h|--versions               Show compared versions in the diff header
**   --webpage                   Format output as a stand-alone HTML webpage
**   -W|--width N                Width of lines in side-by-side diff
**   -Z|--ignore-trailing-space  Ignore changes to end-of-line whitespace
*/
void diff_cmd(void){
  int isGDiff;               /* True for gdiff.  False for normal diff */
  int isInternDiff;          /* True for internal diff */
  const char *zFrom;         /* Source version number */
  const char *zTo;           /* Target version number */
  const char *zCheckin;      /* Check-in version number */
  const char *zBranch;       /* Branch to diff */
  int againstUndo = 0;       /* Diff against files in the undo buffer */
  FileDirList *pFileDir = 0; /* Restrict the diff to these files */
  DiffConfig DCfg;           /* Diff configuration object */
  const char *zDiffCmd = 0;  /* External diff command. NULL for internal diff */


  if( find_option("tk",0,0)!=0 || has_option("tclsh") ){
    diff_tk("diff", 2);
    return;
  }
  isGDiff = g.argv[1][0]=='g';
  isInternDiff = find_option("internal","i",0)!=0;
  zFrom = find_option("from", "r", 1);
  zTo = find_option("to", 0, 1);
  zCheckin = find_option("checkin", "ci", 1);
  zBranch = find_option("branch", 0, 1);
  againstUndo = find_option("undo",0,0)!=0;
  if( againstUndo && ( zFrom!=0 || zTo!=0 || zCheckin!=0 || zBranch!=0) ){
    fossil_fatal("cannot use --undo together with --from, --to, --checkin,"
                 " or --branch");

  if( zTo==0 ){
  }
  if( zBranch ){
    db_must_be_within_tree();
    verify_all_options();
    if( !isInternDiff && g.argc==3 ){
    if( zTo || zFrom || zCheckin ){
      zDiffCmd = db_get(isGDiff ? "gdiff-command" : "diff-command", 0);
      fossil_fatal("cannot use --from, --to, or --checkin with --branch");
    }
    if( g.argc==3 ){
      diff_one_against_disk(zFrom, zDiffCmd);
    zTo = zBranch;
    zFrom = mprintf("root:%s", zBranch);
    }else{
      diff_all_against_disk(zFrom, zDiffCmd);
    }
  }else if( zFrom==0 ){
    fossil_fatal("must use --from if --to is present");
  }else{
    db_find_and_open_repository(1);
    verify_all_options();
    if( !isInternDiff && g.argc==3 ){
      zDiffCmd = db_get(isGDiff ? "gdiff-command" : "diff-command", 0);
  }
  if( zCheckin!=0 && ( zFrom!=0 || zTo!=0 ) ){
    fossil_fatal("cannot use --checkin together with --from or --to");
  }
  g.diffCnt[0] = g.diffCnt[1] = g.diffCnt[2] = 0;
  if( 0==zCheckin ){
    if( zTo==0 || againstUndo ){
      db_must_be_within_tree();
    }else if( zFrom==0 ){
      fossil_fatal("must use --from if --to is present");
    }else{
      db_find_and_open_repository(0, 0);
    }
  }else{
    db_find_and_open_repository(0, 0);
  }
  diff_options(&DCfg, isGDiff, 0);
  determine_exec_relative_option(1);
  verify_all_options();
  if( g.argc>=3 ){
    int i;
    Blob fname;
    pFileDir = fossil_malloc( sizeof(*pFileDir) * (g.argc-1) );
    memset(pFileDir, 0, sizeof(*pFileDir) * (g.argc-1));
    for(i=2; i<g.argc; i++){
      file_tree_name(g.argv[i], &fname, 0, 1);
      pFileDir[i-2].zName = fossil_strdup(blob_str(&fname));
      if( strcmp(pFileDir[i-2].zName,".")==0 ){
        pFileDir[0].zName[0] = '.';
        pFileDir[0].zName[1] = 0;
        break;
      }
      pFileDir[i-2].nName = blob_size(&fname);
      pFileDir[i-2].nUsed = 0;
      blob_reset(&fname);
    }
  }
  if ( zCheckin!=0 ){
    int ridTo = name_to_typed_rid(zCheckin, "ci");
    zTo = zCheckin;
    zFrom = db_text(0,
      "SELECT uuid FROM blob, plink"
      " WHERE plink.cid=%d AND plink.isprim AND plink.pid=blob.rid",
      ridTo);
    if( zFrom==0 ){
      fossil_fatal("check-in %s has no parent", zTo);
    }
  }
  diff_begin(&DCfg);
  if( againstUndo ){
    if( db_lget_int("undo_available",0)==0 ){
      fossil_print("No undo or redo is available\n");
      return;
    }
    diff_against_undo(&DCfg, pFileDir);
    if( g.argc==3 ){
      diff_one_two_versions(zFrom, zTo, zDiffCmd);
    }else{
  }else if( zTo==0 ){
    diff_against_disk(zFrom, &DCfg, pFileDir, 0);
  }else{
      fossil_fatal("--to on complete check-ins not yet implemented");
      diff_all_two_versions(zFrom, zTo, zDiffCmd);
    }
  }
    diff_two_versions(zFrom, zTo, &DCfg, pFileDir);
  }
  if( pFileDir ){
    int i;
    for(i=0; pFileDir[i].zName; i++){
      if( pFileDir[i].nUsed==0
       && strcmp(pFileDir[0].zName,".")!=0
       && !file_isdir(g.argv[i+2], ExtFILE)
      ){
        fossil_fatal("not found: '%s'", g.argv[i+2]);
      }
      fossil_free(pFileDir[i].zName);
    }
    fossil_free(pFileDir);
  }
  diff_end(&DCfg, 0);
  if ( DCfg.diffFlags & DIFF_NUMSTAT ){
    fossil_print("%10d %10d TOTAL over %d changed files\n",
                 g.diffCnt[1], g.diffCnt[2], g.diffCnt[0]);
  }
}

/*
** WEBPAGE: vpatch
** URL: /vpatch?from=FROM&to=TO
**
** Show a patch that goes from check-in FROM to check-in TO.
*/
void vpatch_page(void){
  const char *zFrom = P("from");
  const char *zTo = P("to");
  DiffConfig DCfg;
  cgi_check_for_malice();
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  if( zFrom==0 || zTo==0 ) fossil_redirect_home();

  fossil_nice_default();
  cgi_set_content_type("text/plain");
  diff_config_init(&DCfg, DIFF_VERBOSE);
  diff_two_versions(zFrom, zTo, &DCfg, 0);
}
Added src/dispatch.c.



























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2016 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to map command names (ex: "help", "commit",
** "diff") or webpage names (ex: "/timeline", "/search") into the functions
** that implement those commands and web pages and their associated help
** text.
*/
#include "config.h"
#include <assert.h>
#include "dispatch.h"

#if INTERFACE
/*
** An instance of this object defines everything we need to know about an
** individual command, webpage, or setting.
*/
struct CmdOrPage {
  const char *zName;       /* Name.  Webpages start with "/". Commands do not */
  void (*xFunc)(void);     /* Implementation function, or NULL for settings */
  const char *zHelp;       /* Raw help text */
  int iHelp;               /* Index of help variable */
  unsigned int eCmdFlags;  /* Flags */
};

/***************************************************************************
** These macros must match similar macros in mkindex.c
** Allowed values for CmdOrPage.eCmdFlags.
*/
#define CMDFLAG_1ST_TIER     0x0001     /* Most important commands */
#define CMDFLAG_2ND_TIER     0x0002     /* Obscure and seldom used commands */
#define CMDFLAG_TEST         0x0004     /* Commands for testing only */
#define CMDFLAG_WEBPAGE      0x0008     /* Web pages */
#define CMDFLAG_COMMAND      0x0010     /* A command */
#define CMDFLAG_SETTING      0x0020     /* A setting */
#define CMDFLAG_VERSIONABLE  0x0040     /* A versionable setting */
#define CMDFLAG_BLOCKTEXT    0x0080     /* Multi-line text setting */
#define CMDFLAG_BOOLEAN      0x0100     /* A boolean setting */
#define CMDFLAG_RAWCONTENT   0x0200     /* Do not interpret POST content */
/* NOTE:                     0x0400 = CMDFLAG_SENSITIVE in mkindex.c! */
#define CMDFLAG_HIDDEN       0x0800     /* Elide from most listings */
#define CMDFLAG_LDAVG_EXEMPT 0x1000     /* Exempt from load_control() */
#define CMDFLAG_ALIAS        0x2000     /* Command aliases */
#define CMDFLAG_KEEPEMPTY    0x4000     /* Do not unset empty settings */
/**************************************************************************/

/* Values for the 2nd parameter to dispatch_name_search() */
#define CMDFLAG_ANY         0x0038      /* Match anything */
#define CMDFLAG_PREFIX      0x0200      /* Prefix match is ok */

#endif /* INTERFACE */

/*
** The page_index.h file contains the definition for aCommand[] - an array
** of CmdOrPage objects that defines all available commands and webpages
** known to Fossil.
**
** The entries in aCommand[] are in sorted order by name.  Since webpage names
** always begin with "/", all webpage names occur first.  The page_index.h file
** also sets the FOSSIL_FIRST_CMD macro to be the *approximate* index
** in aCommand[] of the first command entry.  FOSSIL_FIRST_CMD might be
** slightly too low, and so the range FOSSIL_FIRST_CMD...MX_COMMAND might
** contain a few webpage entries at the beginning.
**
** The page_index.h file is generated by the mkindex program which scans all
** source code files looking for header comments on the functions that
** implement command and webpages.
*/
#include "page_index.h"
#define MX_COMMAND count(aCommand)
#define MX_HELP_DUP 5    /* Upper bound estimate on help string duplication */

/*
** Given a command, webpage, or setting name in zName, find the corresponding
** CmdOrPage object and return a pointer to that object in *ppCmd.
**
** The eType field is CMDFLAG_COMMAND to look up commands, CMDFLAG_WEBPAGE to
** look up webpages, CMDFLAG_SETTING to look up settings, or CMDFLAG_ANY to look
** for any.  If the CMDFLAG_PREFIX bit is set, then a prefix match is allowed.
**
** Return values:
**    0:     Success.  *ppCmd is set to the appropriate CmdOrPage
**    1:     Not found.
**    2:     Ambiguous.  Two or more entries match.
*/
int dispatch_name_search(
  const char *zName,           /* Look for this name */
  unsigned eType,              /* CMDFLAGS_* bits */
  const CmdOrPage **ppCmd      /* Write the matching CmdOrPage object here */
){
  int upr, lwr, mid;
  int nName = strlen(zName);
  lwr = 0;
  upr = MX_COMMAND - 1;
  while( lwr<=upr ){
    int c;
    mid = (upr+lwr)/2;
    c = strcmp(zName, aCommand[mid].zName);
    if( c==0 ){
      if( (aCommand[mid].eCmdFlags & eType)==0 ) return 1;
      *ppCmd = &aCommand[mid];
      return 0;  /* An exact match */
    }else if( c<0 ){
      upr = mid - 1;
    }else{
      lwr = mid + 1;
    }
  }
  if( (eType & CMDFLAG_PREFIX)!=0
   && lwr<MX_COMMAND
   && strncmp(zName, aCommand[lwr].zName, nName)==0
  ){
    /* An inexact prefix match was found.  Scan the name table to try to find
     * exactly one entry with this prefix and the requested type. */
    for( mid=-1; lwr<MX_COMMAND
              && strncmp(zName, aCommand[lwr].zName, nName)==0; ++lwr ){
      if( aCommand[lwr].eCmdFlags & eType ){
        if( mid<0 ){
          mid = lwr;  /* Potential ambiguous prefix */
        }else{
          if( aCommand[lwr].xFunc != aCommand[mid].xFunc ){
            return 2;  /* Confirmed ambiguous prefix */
          }
        }
      }
    }
    if( mid>=0 ){
      *ppCmd = &aCommand[mid];
      return 0;  /* Prefix match */
    }
  }
  return 1;  /* Not found */
}

/*
** zName is the name of a webpage (eType==CMDFLAGS_WEBPAGE) that does not
** exist in the dispatch table.  Check to see if this webpage name exists
** as an alias in the CONFIG table of the repository.  If it is, then make
** appropriate changes to the CGI environment and set *ppCmd to point to the
** aliased command.
**
** Return 0 if the command is successfully aliased.  Return 1 if there
** is not alias for zName.  Any kind of error in the alias value causes a
** error to be thrown.
**
** Alias entries in the CONFIG table have a "name" value of "walias:NAME"
** where NAME is the input page name.  The value is a string of the form
** "NEWNAME?QUERYPARAMS".  The ?QUERYPARAMS is optional.  If present (and it
** usually is), then all query parameters are added to the CGI environment.
** Except, query parameters of the form "X!" cause any CGI X variable to be
** removed.
*/
int dispatch_alias(const char *zName, const CmdOrPage **ppCmd){
  char *z;
  char *zQ;
  int i;

  z = db_text(0, "SELECT value FROM config WHERE name='walias:%q'",zName);
  if( z==0 ) return 1;
  for(i=0; z[i] && z[i]!='?'; i++){}
  if( z[i]=='?' ){
    z[i] = 0;
    zQ = &z[i+1];
  }else{
    zQ = &z[i];
  }
  if( dispatch_name_search(z, CMDFLAG_WEBPAGE, ppCmd) ){
    fossil_fatal("\"%s\" aliased to \"%s\" but \"%s\" does not exist",
                 zName, z, z);
  }
  z = zQ;
  while( *z ){
    char *zName = z;
    char *zValue = 0;
    while( *z && *z!='=' && *z!='&' && *z!='!' ){ z++; }
    if( *z=='=' ){
      *z = 0;
      z++;
      zValue = z;
      while( *z && *z!='&' ){ z++; }
      if( *z ){
        *z = 0;
        z++;
      }
      dehttpize(zValue);
    }else if( *z=='!' ){
      *(z++) = 0;
      cgi_delete_query_parameter(zName);
      zName = "";
    }else{
      if( *z ){ *z++ = 0; }
      zValue = "";
    }
    if( fossil_islower(zName[0]) ){
      cgi_replace_query_parameter(zName, zValue);
    }else if( fossil_isupper(zName[0]) ){
      cgi_replace_query_parameter_tolower(zName, zValue);
    }
  }
  return 0;
}

/*
** Fill Blob with a space-separated list of all command names that
** match the prefix zPrefix and the eType CMDFLAGS_ bits.
*/
void dispatch_matching_names(
  const char *zPrefix,        /* name prefix */
  unsigned eType,             /* CMDFLAG_ bits */
  Blob *pList                 /* space-separated list of command names */
){
  int i;
  int nPrefix = (int)strlen(zPrefix);
  for(i=FOSSIL_FIRST_CMD; i<MX_COMMAND; i++){
    if( (aCommand[i].eCmdFlags & eType)==0 ) continue;
    if( strncmp(zPrefix, aCommand[i].zName, nPrefix)==0 ){
      blob_appendf(pList, " %s", aCommand[i].zName);
    }
  }
}

/*
** Return the index of the first non-space character that follows
** a span of two or more spaces.  Return 0 if there is not gap.
*/
static int hasGap(const char *z, int n){
  int i;
  for(i=3; i<n-1; i++){
    if( z[i]==' ' && z[i+1]!=' ' && z[i-1]==' ' && z[i-2]!='.' ) return i+1;
  }
  return 0 ;
}

/*
** Input string zIn starts with '['.  If the content is a hyperlink of the
** form [[...]] then return the index of the closing ']'.  Otherwise return 0.
*/
static int help_is_link(const char *z, int n){
  int i;
  char c;
  if( n<5 ) return 0;
  if( z[1]!='[' ) return 0;
  for(i=3; i<n && (c = z[i])!=0; i++){
    if( c==']' && z[i-1]==']' ) return i;
  }
  return 0;
}

/*
** Append text to pOut with changes:
**
**    *   Add hyperlink markup for [[...]]
**    *   Escape HTML characters: < > & and "
**    *   Change "%fossil" to just "fossil"
*/
static void appendLinked(Blob *pOut, const char *z, int n){
  int i = 0;
  int j;
  while( i<n ){
    char c = z[i];
    if( c=='[' && (j = help_is_link(z+i, n-i))>0 ){
      if( i ) blob_append(pOut, z, i);
      z += i+2;
      n -= i+2;
      blob_appendf(pOut, "<a href='%R/help?cmd=%.*s'>%.*s</a>",
         j-3, z, j-3, z);
      z += j-1;
      n -= j-1;
      i = 0;
    }else if( c=='%' && n-i>=7 && strncmp(z+i,"%fossil",7)==0 ){
      if( i ) blob_append(pOut, z, i);
      z += i+7;
      n -= i+7;
      blob_append(pOut, "fossil", 6);
      i = 0;
    }else if( c=='<' ){
      if( i ) blob_append(pOut, z, i);
      blob_append(pOut, "&lt;", 4);
      z += i+1;
      n -= i+1;
      i = 0;
    }else if( c=='>' ){
      if( i ) blob_append(pOut, z, i);
      blob_append(pOut, "&gt;", 4);
      z += i+1;
      n -= i+1;
      i = 0;
    }else if( c=='&' ){
      if( i ) blob_append(pOut, z, i);
      blob_append(pOut, "&amp;", 5);
      z += i+1;
      n -= i+1;
      i = 0;
    }else{
      i++;
    }
  }
  blob_append(pOut, z, i);
}

/*
** Append text to pOut, adding formatting markup.  Terms that
** have all lower-case letters are within <tt>..</tt>.  Terms
** that have all upper-case letters are within <i>..</i>.
*/
static void appendMixedFont(Blob *pOut, const char *z, int n){
  const char *zEnd = "";
  int i = 0;
  int j;
  while( i<n ){
    if( z[i]==' ' || z[i]=='=' ){
      for(j=i+1; j<n && (z[j]==' ' || z[j]=='='); j++){}
      appendLinked(pOut, z+i, j-i);
      i = j;
    }else{
      for(j=i; j<n && z[j]!=' ' && z[j]!='=' && !fossil_isalpha(z[j]); j++){}
      if( j>=n || z[j]==' ' || z[j]=='=' ){
        zEnd = "";
      }else{
        if( fossil_isupper(z[j]) && z[i]!='-' ){
          blob_append(pOut, "<i>",3);
          zEnd = "</i>";
        }else{
          blob_append(pOut, "<tt>", 4);
          zEnd = "</tt>";
        }
      }
      while( j<n && z[j]!=' ' && z[j]!='=' ){ j++; }
      appendLinked(pOut, z+i, j-i);
      if( zEnd[0] ) blob_append(pOut, zEnd, -1);
      i = j;
    }
  }
}

/*
** Attempt to reformat plain-text help into HTML for display on a webpage.
**
** The HTML output is appended to Blob pHtml, which should already be
** initialized.
**
** Formatting rules:
**
**   *  Bullet lists are indented from the surrounding text by
**      at least one space.  Each bullet begins with " * ".
**
**   *  Display lists are indented from the surrounding text.
**      Each tag begins with "-" or occur on a line that is
**      followed by two spaces and a non-space.  <dd> elements can begin
**      on the same line as long as they are separated by at least
**      two spaces.
**
**   *  Indented text is show verbatim (<pre>...</pre>)
**
**   *  Lines that begin with "|" at the left margin are in <pre>...</pre>
*/
static void help_to_html(const char *zHelp, Blob *pHtml){
  int i;
  char c;
  int nIndent = 0;
  int wantP = 0;
  int wantBR = 0;
  int aIndent[10];
  const char *azEnd[10];
  int iLevel = 0;
  int isLI = 0;
  int isDT = 0;
  int inPRE = 0;
  static const char *zEndDL = "</dl></blockquote>";
  static const char *zEndPRE = "</pre></blockquote>";
  static const char *zEndUL = "</ul>";
  static const char *zEndDD = "</dd>";

  aIndent[0] = 0;
  azEnd[0] = "";
  while( zHelp[0] ){
    i = 0;
    while( (c = zHelp[i])!=0 && c!='\n' ){
      if( c=='%' && i>2 && zHelp[i-2]==':' && strncmp(zHelp+i,"%fossil",7)==0 ){
        appendLinked(pHtml, zHelp, i);
        zHelp += i+1;
        i = 0;
        wantBR = 1;
        continue;
      }
      i++;
    }
    if( i>2 && (zHelp[0]=='>' || zHelp[0]=='|') && zHelp[1]==' ' ){
      if( zHelp[0]=='>' ){
        isDT = 1;
        for(nIndent=1; nIndent<i && zHelp[nIndent]==' '; nIndent++){}
      }else{
        if( !inPRE ){
          blob_append(pHtml, "<pre>\n", -1);
          inPRE = 1;
        }
      }
    }else{
      if( inPRE ){
        blob_append(pHtml, "</pre>\n", -1);
        inPRE = 0;
      }
      isDT = 0;
      for(nIndent=0; nIndent<i && zHelp[nIndent]==' '; nIndent++){}
    }
    if( inPRE ){
      blob_append(pHtml, zHelp+1, i);
      zHelp += i + 1;
      continue;
    }
    if( nIndent==i ){
      if( c==0 ) break;
      if( iLevel && azEnd[iLevel]==zEndPRE ){
        /* Skip the newline at the end of a <pre> */
      }else{
        blob_append_char(pHtml, '\n');
      }
      wantP = 1;
      wantBR = 0;
      zHelp += i+1;
      continue;
    }
    if( nIndent+2<i && zHelp[nIndent]=='*' && zHelp[nIndent+1]==' ' ){
      nIndent += 2;
      while( nIndent<i && zHelp[nIndent]==' '){ nIndent++; }
      isLI = 1;
    }else{
      isLI = 0;
    }
    while( iLevel>0 && aIndent[iLevel]>nIndent ){
      blob_append(pHtml, azEnd[iLevel--], -1);
    }
    if( nIndent>aIndent[iLevel] ){
      assert( iLevel<ArraySize(aIndent)-2 );
      if( isLI ){
        iLevel++;
        aIndent[iLevel] = nIndent;
        azEnd[iLevel] = zEndUL;
        if( wantP ){
          blob_append(pHtml,"<p>", 3);
          wantP = 0;
        }
        blob_append(pHtml, "<ul>\n", 5);
      }else if( isDT
             || zHelp[nIndent]=='-'
             || hasGap(zHelp+nIndent,i-nIndent) ){
        iLevel++;
        aIndent[iLevel] = nIndent;
        azEnd[iLevel] = zEndDL;
        wantP = 0;
        blob_append(pHtml, "<blockquote><dl>\n", -1);
      }else if( azEnd[iLevel]==zEndDL ){
        iLevel++;
        aIndent[iLevel] = nIndent;
        azEnd[iLevel] = zEndDD;
        if( wantP ){
          blob_append(pHtml,"<p>", 3);
          wantP = 0;
        }
        blob_append(pHtml, "<dd>", 4);
      }else if( wantP ){
        iLevel++;
        aIndent[iLevel] = nIndent;
        azEnd[iLevel] = zEndPRE;
        blob_append(pHtml, "<blockquote><pre>", -1);
        wantP = 0;
      }
    }
    if( isLI ){
      blob_append(pHtml, "<li> ", 5);
    }
    if( wantP ){
      blob_append(pHtml, "<p> ", 4);
      wantP = 0;
    }
    if( azEnd[iLevel]==zEndDL ){
      int iDD;
      blob_append(pHtml, "<dt> ", 5);
      iDD = hasGap(zHelp+nIndent, i-nIndent);
      if( iDD ){
        int x;
        assert( iLevel<ArraySize(aIndent)-1 );
        iLevel++;
        aIndent[iLevel] = x = nIndent+iDD;
        azEnd[iLevel] = zEndDD;
        appendMixedFont(pHtml, zHelp+nIndent, iDD-2);
        blob_append(pHtml, "</dt><dd>",9);
        appendLinked(pHtml, zHelp+x, i-x);
      }else{
        appendMixedFont(pHtml, zHelp+nIndent, i-nIndent);
      }
      blob_append(pHtml, "</dt>\n", 6);
    }else if( wantBR ){
      appendMixedFont(pHtml, zHelp+nIndent, i-nIndent);
      blob_append(pHtml, "<br>\n", 5);
      wantBR = 0;
    }else{
      appendLinked(pHtml, zHelp+nIndent, i-nIndent);
      blob_append_char(pHtml, '\n');
    }
    zHelp += i+1;
    i = 0;
    if( c==0 ) break;
  }
  while( iLevel>0 ){
    blob_appendf(pHtml, "%s\n", azEnd[iLevel--]);
  }
}

/*
** Format help text for TTY display.
*/
static void help_to_text(const char *zHelp, Blob *pText){
  int i, x;
  char c;
  for(i=0; (c = zHelp[i])!=0; i++){
    if( c=='%' && strncmp(zHelp+i,"%fossil",7)==0 ){
      if( i>0 ) blob_append(pText, zHelp, i);
      blob_append(pText, "fossil", 6);
      zHelp += i+7;
      i = -1;
      continue;
    }
    if( c=='\n' && (zHelp[i+1]=='>' || zHelp[i+1]=='|') && zHelp[i+2]==' ' ){
      blob_append(pText, zHelp, i+1);
      blob_append(pText, " ", 1);
      zHelp += i+2;
      i = -1;
      continue;
    }
    if( c=='[' && (x = help_is_link(zHelp+i, 100000))!=0 ){
      if( i>0 ) blob_append(pText, zHelp, i);
      zHelp += i+2;
      blob_append(pText, zHelp, x-3);
      zHelp += x-1;
      i = -1;
      continue;
    }
  }
  if( i>0 ){
    blob_append(pText, zHelp, i);
  }
}

/*
** Display help for all commands based on provided flags.
*/
static void display_all_help(int mask, int useHtml, int rawOut){
  int i;
  unsigned char occHelp[FOSSIL_MX_CMDIDX] = {0};   /* Help string occurrences */
  int bktHelp[FOSSIL_MX_CMDIDX][MX_HELP_DUP] = {{0}};/* Help strings->commands*/
  if( useHtml ) fossil_print("<!--\n");
  fossil_print("Help text for:\n");
  if( mask & CMDFLAG_1ST_TIER ) fossil_print(" * Commands\n");
  if( mask & CMDFLAG_2ND_TIER ) fossil_print(" * Auxiliary commands\n");
  if( mask & CMDFLAG_ALIAS )    fossil_print(" * Aliases\n");
  if( mask & CMDFLAG_TEST )     fossil_print(" * Test commands\n");
  if( mask & CMDFLAG_WEBPAGE )  fossil_print(" * Web pages\n");
  if( mask & CMDFLAG_SETTING )  fossil_print(" * Settings\n");
  if( useHtml ){
    fossil_print("-->\n");
    fossil_print("<!-- start_all_help -->\n");
  }else{
    fossil_print("---\n");
  }
  /* Fill in help string buckets */
  for(i=0; i<MX_COMMAND; i++){
    if( (aCommand[i].eCmdFlags & mask)==0 ) continue;
    else if(aCommand[i].eCmdFlags & CMDFLAG_HIDDEN) continue;
    bktHelp[aCommand[i].iHelp][occHelp[aCommand[i].iHelp]++] = i;
  }
  for(i=0; i<MX_COMMAND; i++){
    if( (aCommand[i].eCmdFlags & mask)==0 ) continue;
    else if(aCommand[i].eCmdFlags & CMDFLAG_HIDDEN) continue;
    if( occHelp[aCommand[i].iHelp] > 0 ){
      int j;
      if( useHtml ){
        Blob html;
        blob_init(&html, 0, 0);
        help_to_html(aCommand[i].zHelp, &html);
        for(j=0; j<occHelp[aCommand[i].iHelp]; j++){
          fossil_print("<h1>%h</h1>\n",
                       aCommand[bktHelp[aCommand[i].iHelp][j]].zName);
        }
        fossil_print("%s\n<hr>\n", blob_str(&html));
        blob_reset(&html);
      }else if( rawOut ){
        for(j=0; j<occHelp[aCommand[i].iHelp]; j++)
          fossil_print("# %s\n", aCommand[bktHelp[aCommand[i].iHelp][j]].zName);
        fossil_print("%s\n\n", aCommand[i].zHelp);
      }else{
          Blob txt;
          blob_init(&txt, 0, 0);
          help_to_text(aCommand[i].zHelp, &txt);
          for(j=0; j<occHelp[aCommand[i].iHelp]; j++){
            fossil_print("# %s%s\n",
              aCommand[bktHelp[aCommand[i].iHelp][j]].zName,
              (aCommand[i].eCmdFlags & CMDFLAG_VERSIONABLE)!=0 ?
              " (versionable)" : "");
          }
          fossil_print("%s\n\n", blob_str(&txt));
          blob_reset(&txt);
      }
      occHelp[aCommand[i].iHelp] = 0;
    }
  }
  if( useHtml ){
    fossil_print("<!-- end_all_help -->\n");
  }else{
    fossil_print("---\n");
  }
  version_cmd();
}

/*
** COMMAND: test-all-help
**
** Usage: %fossil test-all-help ?OPTIONS?
**
** Show help text for commands and pages.  Useful for proof-reading.
** Defaults to just the CLI commands.  Specify --www to see only the
** web pages, or --everything to see both commands and pages.
**
** Options:
**    -a|--aliases      Show aliases
**    -e|--everything   Show all commands and pages.  Omit aliases to
**                      avoid duplicates.
**    -h|--html         Transform output to HTML
**    -o|--options      Show global options
**    -r|--raw          No output formatting
**    -s|--settings     Show settings
**    -t|--test         Include test- commands
**    -w|--www          Show WWW pages
*/
void test_all_help_cmd(void){
  int mask = CMDFLAG_1ST_TIER | CMDFLAG_2ND_TIER;
  int useHtml = find_option("html","h",0)!=0;
  int rawOut = find_option("raw","r",0)!=0;

  if( find_option("www","w",0) ){
    mask = CMDFLAG_WEBPAGE;
  }
  if( find_option("everything","e",0) ){
    mask = CMDFLAG_1ST_TIER | CMDFLAG_2ND_TIER | CMDFLAG_WEBPAGE |
              CMDFLAG_ALIAS | CMDFLAG_SETTING | CMDFLAG_TEST;
  }
  if( find_option("settings","s",0) ){
    mask = CMDFLAG_SETTING;
  }
  if( find_option("aliases","a",0) ){
    mask = CMDFLAG_ALIAS;
  }
  if( find_option("test","t",0) ){
    mask |= CMDFLAG_TEST;
  }
  display_all_help(mask, useHtml, rawOut);
}

/*
** Count the number of entries in the aCommand[] table that match
** the given flag.
*/
static int countCmds(unsigned int eFlg){
  int n = 0;
  int i;
  for(i=0; i<MX_COMMAND; i++){
    if( (aCommand[i].eCmdFlags & eFlg)!=0 ) n++;
  }
  return n;
}

/*
** COMMAND: test-command-stats
**
** Print statistics about the built-in command dispatch table.
*/
void test_command_stats_cmd(void){
  fossil_print("commands:       %4d\n",
     countCmds( CMDFLAG_COMMAND ));
  fossil_print("  1st tier         %4d\n",
     countCmds( CMDFLAG_1ST_TIER ));
  fossil_print("  2nd tier         %4d\n",
     countCmds( CMDFLAG_2ND_TIER ));
  fossil_print("  alias            %4d\n",
     countCmds( CMDFLAG_ALIAS ));
  fossil_print("  test             %4d\n",
     countCmds( CMDFLAG_TEST ));
  fossil_print("web-pages:      %4d\n",
     countCmds( CMDFLAG_WEBPAGE ));
  fossil_print("settings:       %4d\n",
     countCmds( CMDFLAG_SETTING ));
  fossil_print("total entries:  %4d\n", MX_COMMAND);
}

/*
** Compute an estimate of the edit-distance between to input strings.
**
** The first string is the input.  The second is the pattern.  Only the
** first 100 characters of the pattern are considered.
*/
static int edit_distance(const char *zA, const char *zB){
  int nA = (int)strlen(zA);
  int nB = (int)strlen(zB);
  int i, j, m;
  int p0, p1, c0;
  int a[100] = {0};
  static const int incr = 4;

  for(j=0; j<nB; j++) a[j] = 1;
  for(i=0; i<nA; i++){
    p0 = i==0 ? 0 : i*incr-1;
    c0 = i*incr;
    for(j=0; j<nB; j++){
      int m = 999;
      p1 = a[j];
      if( zA[i]==zB[j] ){
        m = p0;
      }else{
        m = c0+2;
        if( m>p1+2 ) m = p1+2;
        if( m>p0+3 ) m = p0+3;
      }
      c0 = a[j];
      a[j] = m;
      p0 = p1;
    }
  }
  m = a[nB-1];
  for(j=0; j<nB-1; j++){
    if( a[j]+1<m ) m = a[j]+1;
  }
  return m;
}

/*
** Fill the pointer array with names of commands that approximately
** match the input.  Return the number of approximate matches.
**
** Closest matches appear first.
*/
int dispatch_approx_match(const char *zIn, int nArray, const char **azArray){
  int i;
  int bestScore;
  int m;
  int n = 0;
  int mnScore = 0;
  int mxScore = 99999;
  int iFirst, iLast;

  if( zIn[0]=='/' ){
    iFirst = 0;
    iLast = FOSSIL_FIRST_CMD-1;
  }else{
    iFirst = FOSSIL_FIRST_CMD;
    iLast = MX_COMMAND-1;
  }

  while( n<nArray ){
    bestScore = mxScore;
    for(i=iFirst; i<=iLast; i++){
      m = edit_distance(zIn, aCommand[i].zName);
      if( m<mnScore ) continue;
      if( m==mnScore ){
        azArray[n++] = aCommand[i].zName;
        if( n>=nArray ) return n;
       }else if( m<bestScore ){
        bestScore = m;
      }
    }
    if( bestScore>=mxScore ) break;
    mnScore = bestScore;
  }
  return n;
}

/*
** COMMAND: test-approx-match
**
** Test the approximate match algorithm
*/
void test_approx_match_command(void){
  int i, j, n;
  const char *az[20];
  for(i=2; i<g.argc; i++){
    fossil_print("%s:\n", g.argv[i]);
    n = dispatch_approx_match(g.argv[i], 20, az);
    for(j=0; j<n; j++){
      fossil_print("   %s\n", az[j]);
    }
  }
}

/*
** WEBPAGE: help
** URL: /help?name=CMD
**
** Show the built-in help text for CMD.  CMD can be a command-line interface
** command or a page name from the web interface or a setting.
** Query parameters:
**
**    name=CMD        Show help for CMD where CMD is a command name or
**                    webpage name or setting name.
**
**    plaintext       Show the help within <pre>...</pre>, as if it were
**                    displayed using the "fossil help" command.
**
**    raw             Show the raw help text without any formatting.
**                    (Used for debugging.)
*/
void help_page(void){
  const char *zCmd = P("cmd");

  if( zCmd==0 ) zCmd = P("name");
  cgi_check_for_malice();
  if( zCmd && *zCmd ){
    int rc;
    const CmdOrPage *pCmd = 0;

    style_set_current_feature("tkt");
    style_header("Help: %s", zCmd);

    style_submenu_element("Command-List", "%R/help");
    rc = dispatch_name_search(zCmd, CMDFLAG_ANY|CMDFLAG_PREFIX, &pCmd);
    if( *zCmd=='/' ){
      /* Some of the webpages require query parameters in order to work.
      ** @ <h1>The "<a href='%R%s(zCmd)'>%s(zCmd)</a>" page:</h1> */
      @ <h1>The "%h(zCmd)" page:</h1>
    }else if( rc==0 && (pCmd->eCmdFlags & CMDFLAG_SETTING)!=0 ){
      @ <h1>The "%h(pCmd->zName)" setting:</h1>
    }else{
      @ <h1>The "%h(zCmd)" command:</h1>
    }
    if( rc==1 ){
      @ unknown command: %h(zCmd)
    }else if( rc==2 ){
      @ ambiguous command prefix: %h(zCmd)
    }else{
      if( pCmd->zHelp[0]==0 ){
        @ No help available for "%h(pCmd->zName)"
      }else if( P("plaintext") ){
        Blob txt;
        blob_init(&txt, 0, 0);
        help_to_text(pCmd->zHelp, &txt);
        @ <pre class="helpPage">
        @ %h(blob_str(&txt))
        @ </pre>
        blob_reset(&txt);
      }else if( P("raw") ){
        @ <pre class="helpPage">
        @ %h(pCmd->zHelp)
        @ </pre>
      }else{
        @ <div class="helpPage">
        help_to_html(pCmd->zHelp, cgi_output_blob());
        @ </div>
      }
    }
  }else{
    int i;
    const char *zWidth = "28ex";
    unsigned char occHelp[FOSSIL_MX_CMDIDX] = {0};   /* Help str occurrences */
    int bktHelp[FOSSIL_MX_CMDIDX][MX_HELP_DUP] = {{0}};/* Help str->commands */
    style_header("Help");

    @ <a name='commands'></a>
    @ <h1>Available commands:</h1>
    @ <div class="columns" style="column-width: %s(zWidth);">
    @ <ul>
    /* Fill in help string buckets */
    for(i=0; i<MX_COMMAND; i++){
      if(aCommand[i].eCmdFlags & CMDFLAG_HIDDEN) continue;
      bktHelp[aCommand[i].iHelp][occHelp[aCommand[i].iHelp]++] = i;
    }
    for(i=0; i<MX_COMMAND; i++){
      const char *z = aCommand[i].zName;
      const char *zBoldOn  = aCommand[i].eCmdFlags&CMDFLAG_1ST_TIER?"<b>" :"";
      const char *zBoldOff = aCommand[i].eCmdFlags&CMDFLAG_1ST_TIER?"</b>":"";
      if( '/'==*z || strncmp(z,"test",4)==0 ) continue;
      if( (aCommand[i].eCmdFlags & CMDFLAG_SETTING)!=0 ) continue;
      else if( (aCommand[i].eCmdFlags & CMDFLAG_HIDDEN)!=0 ) continue;
      else if( (aCommand[i].eCmdFlags & CMDFLAG_ALIAS)!=0 ) continue;
      @ <li><a href="%R/help?cmd=%s(z)">%s(zBoldOn)%s(z)%s(zBoldOff)</a>
      /* Output aliases */
      if( occHelp[aCommand[i].iHelp] > 1 ){
        int j;
        int aliases[MX_HELP_DUP], nAliases=0;
        for(j=0; j<occHelp[aCommand[i].iHelp]; j++){
          if( bktHelp[aCommand[i].iHelp][j] != i ){
            if( aCommand[bktHelp[aCommand[i].iHelp][j]].eCmdFlags
                & CMDFLAG_ALIAS ){
              aliases[nAliases++] = bktHelp[aCommand[i].iHelp][j];
            }
          }
        }
        if( nAliases>0 ){
          int k;
          @(\
          for(k=0; k<nAliases; k++){
            @<a href="%R/help?cmd=%s(aCommand[aliases[k]].zName)">\
            @%s(aCommand[aliases[k]].zName)</a>%s((k<nAliases-1)?", ":"")\
          }
          @)\
        }
      }
      @ </li>
    }

    @ </ul></div>

    @ <a name='webpages'></a>
    @ <h1>Available web UI pages:</h1>
    @ <div class="columns" style="column-width: %s(zWidth);">
    @ <ul>
    for(i=0; i<MX_COMMAND; i++){
      const char *z = aCommand[i].zName;
      if( '/'!=*z ) continue;
      else if( (aCommand[i].eCmdFlags & CMDFLAG_HIDDEN)!=0 ) continue;
      if( aCommand[i].zHelp[0] ){
        @ <li><a href="%R/help?cmd=%s(z)">%s(z+1)</a></li>
      }else{
        @ <li>%s(z+1)</li>
      }
    }
    @ </ul></div>

    @ <a name='unsupported'></a>
    @ <h1>Unsupported commands:</h1>
    @ <div class="columns" style="column-width: %s(zWidth);">
    @ <ul>
    for(i=0; i<MX_COMMAND; i++){
      const char *z = aCommand[i].zName;
      if( strncmp(z,"test",4)!=0 ) continue;
      else if( (aCommand[i].eCmdFlags & CMDFLAG_HIDDEN)!=0 ) continue;
      if( aCommand[i].zHelp[0] ){
        @ <li><a href="%R/help?cmd=%s(z)">%s(z)</a></li>
      }else{
        @ <li>%s(z)</li>
      }
    }
    @ </ul></div>

    @ <a name='settings'></a>
    @ <h1>Settings:</h1>
    @ <div class="columns" style="column-width: %s(zWidth);">
    @ <ul>
    for(i=0; i<MX_COMMAND; i++){
      const char *z = aCommand[i].zName;
      if( (aCommand[i].eCmdFlags & CMDFLAG_SETTING)==0 ) continue;
      else if( (aCommand[i].eCmdFlags & CMDFLAG_HIDDEN)!=0 ) continue;
      if( aCommand[i].zHelp[0] ){
        @ <li><a href="%R/help?cmd=%s(z)">%s(z)</a></li>
      }else{
        @ <li>%s(z)</li>
      }
    }
    @ </ul></div>

  }
  style_finish_page();
}

/*
** WEBPAGE: test-all-help
**
** Show all help text on a single page.  Useful for proof-reading.
*/
void test_all_help_page(void){
  int i;
  unsigned char occHelp[FOSSIL_MX_CMDIDX] = {0};   /* Help string occurrences */
  int bktHelp[FOSSIL_MX_CMDIDX][MX_HELP_DUP] = {{0}};/* Help strings->commands*/
  Blob buf;
  blob_init(&buf,0,0);
  style_set_current_feature("test");
  style_header("All Help Text");
  @ <dl>
  /* Fill in help string buckets */
  for(i=0; i<MX_COMMAND; i++){
    if(aCommand[i].eCmdFlags & CMDFLAG_HIDDEN) continue;
    bktHelp[aCommand[i].iHelp][occHelp[aCommand[i].iHelp]++] = i;
  }
  for(i=0; i<MX_COMMAND; i++){
    const char *zDesc;
    unsigned int e = aCommand[i].eCmdFlags;
    if( e & CMDFLAG_1ST_TIER ){
      zDesc = "1st tier command";
    }else if( e & CMDFLAG_2ND_TIER ){
      zDesc = "2nd tier command";
    }else if( e & CMDFLAG_ALIAS ){
      zDesc = "alias";
    }else if( e & CMDFLAG_TEST ){
      zDesc = "test command";
    }else if( e & CMDFLAG_WEBPAGE ){
      if( e & CMDFLAG_RAWCONTENT ){
        zDesc = "raw-content web page";
      }else{
        zDesc = "web page";
      }
    }else{
      blob_reset(&buf);
      if( e & CMDFLAG_VERSIONABLE ){
        blob_appendf(&buf, "versionable ");
      }
      if( e & CMDFLAG_BLOCKTEXT ){
        blob_appendf(&buf, "block-text ");
      }
      if( e & CMDFLAG_BOOLEAN ){
        blob_appendf(&buf, "boolean ");
      }
      blob_appendf(&buf,"setting");
      zDesc = blob_str(&buf);
    }
    if( memcmp(aCommand[i].zName, "test", 4)==0 ) continue;
    if( occHelp[aCommand[i].iHelp] > 0 ){
      int j;
      for(j=0; j<occHelp[aCommand[i].iHelp]; j++){
        unsigned int e = aCommand[bktHelp[aCommand[i].iHelp][j]].eCmdFlags;
        if( e & CMDFLAG_1ST_TIER ){
          zDesc = "1st tier command";
        }else if( e & CMDFLAG_2ND_TIER ){
          zDesc = "2nd tier command";
        }else if( e & CMDFLAG_ALIAS ){
          zDesc = "alias";
        }else if( e & CMDFLAG_TEST ){
          zDesc = "test command";
        }else if( e & CMDFLAG_WEBPAGE ){
          if( e & CMDFLAG_RAWCONTENT ){
            zDesc = "raw-content web page";
          }else{
            zDesc = "web page";
          }
        }

        @ <dt><big><b>%s(aCommand[bktHelp[aCommand[i].iHelp][j]].zName)</b>
        @</big> (%s(zDesc))</dt>
      }
      @ <p><dd>
      help_to_html(aCommand[i].zHelp, cgi_output_blob());
      @ </dd><p>
      occHelp[aCommand[i].iHelp] = 0;
    }
  }
  @ </dl>
  blob_reset(&buf);
  style_finish_page();
}

static void multi_column_list(const char **azWord, int nWord){
  int i, j, len;
  int mxLen = 0;
  int nCol;
  int nRow;
  for(i=0; i<nWord; i++){
    len = strlen(azWord[i]);
    if( len>mxLen ) mxLen = len;
  }
  nCol = 80/(mxLen+2);
  if( nCol==0 ) nCol = 1;
  nRow = (nWord + nCol - 1)/nCol;
  for(i=0; i<nRow; i++){
    const char *zSpacer = "";
    for(j=i; j<nWord; j+=nRow){
      fossil_print("%s%-*s", zSpacer, mxLen, azWord[j]);
      zSpacer = "  ";
    }
    fossil_print("\n");
  }
}

/*
** COMMAND: test-list-webpage
**
** List all web pages.
*/
void cmd_test_webpage_list(void){
  int i, nCmd;
  const char *aCmd[MX_COMMAND];
  for(i=nCmd=0; i<MX_COMMAND; i++){
    if(CMDFLAG_WEBPAGE & aCommand[i].eCmdFlags){
      aCmd[nCmd++] = aCommand[i].zName;
    }
  }
  assert(nCmd && "page list is empty?");
  multi_column_list(aCmd, nCmd);
}


/*
** List of commands starting with zPrefix, or all commands if zPrefix is NULL.
*/
static void command_list(int cmdMask, int verboseFlag, int useHtml){
  if( verboseFlag ){
    display_all_help(cmdMask, useHtml, 0);
  }else{
    int i, nCmd;
    const char *aCmd[MX_COMMAND];
    for(i=nCmd=0; i<MX_COMMAND; i++){
      if( (aCommand[i].eCmdFlags & cmdMask)==0 ) continue;
      else if(aCommand[i].eCmdFlags & CMDFLAG_HIDDEN) continue;
      aCmd[nCmd++] = aCommand[i].zName;
    }
    multi_column_list(aCmd, nCmd);
  }
}

/*
** Documentation on universal command-line options.
*/
/* @-comment: # */
static const char zOptions[] =
@ Command-line options common to all commands:
@
@   --args FILENAME         Read additional arguments and options from FILENAME
@   --case-sensitive BOOL   Set case sensitivity for file names
@   --cgitrace              Active CGI tracing
@   --chdir PATH            Change to PATH before performing any operations
@   --comfmtflags VALUE     Set comment formatting flags to VALUE
@   --comment-format VALUE  Alias for --comfmtflags
@   --errorlog FILENAME     Log errors to FILENAME
@   --help                  Show help on the command rather than running it
@   --httptrace             Trace outbound HTTP requests
@   --localtime             Display times using the local timezone
@   --nocgi                 Do not act as CGI
@   --no-th-hook            Do not run TH1 hooks
@   --quiet                 Reduce the amount of output
@   --sqlstats              Show SQL usage statistics when done
@   --sqltrace              Trace all SQL commands
@   --sshtrace              Trace SSH activity
@   --ssl-identity NAME     Set the SSL identity to NAME
@   --systemtrace           Trace calls to system()
@   -U|--user USER          Make the default user be USER
@   --utc                   Display times using UTC
@   --vfs NAME              Cause SQLite to use the NAME VFS
;

/*
** COMMAND: help
**
** Usage: %fossil help [OPTIONS] [TOPIC]
**
** Display information on how to use TOPIC, which may be a command, webpage, or
** setting.  Webpage names begin with "/".  If TOPIC is omitted, a list of
** topics is returned.
**
** The following options can be used when TOPIC is omitted:
**
**    -a|--all          List both common and auxiliary commands
**    -o|--options      List command-line options common to all commands
**    -s|--setting      List setting names
**    -t|--test         List unsupported "test" commands
**    -v|--verbose      List both names and help text
**    -x|--aux          List only auxiliary commands
**    -w|--www          List all web pages
**    -f|--full         List full set of commands (including auxiliary
**                      and unsupported "test" commands), options,
**                      settings, and web pages
**    -e|--everything   List all help on all topics
**
** These options can be used when TOPIC is present:
**
**    -h|--html         Format output as HTML rather than plain text
**    -c|--commands     Restrict TOPIC search to commands
*/
void help_cmd(void){
  int rc;
  int mask = CMDFLAG_ANY;
  int isPage = 0;
  int verboseFlag = 0;
  int commandsFlag = 0;
  const char *z;
  const char *zCmdOrPage;
  const CmdOrPage *pCmd = 0;
  int useHtml = 0;
  const char *zTopic;
  Blob txt;
  verboseFlag = find_option("verbose","v",0)!=0;
  commandsFlag = find_option("commands","c",0)!=0;
  useHtml = find_option("html","h",0)!=0;
  if( find_option("options","o",0) ){
    fossil_print("%s", zOptions);
    return;
  }
  else if( find_option("all","a",0) ){
    command_list(CMDFLAG_1ST_TIER | CMDFLAG_2ND_TIER, verboseFlag, useHtml);
    return;
  }
  else if( find_option("www","w",0) ){
    command_list(CMDFLAG_WEBPAGE, verboseFlag, useHtml);
    return;
  }
  else if( find_option("aux","x",0) ){
    command_list(CMDFLAG_2ND_TIER, verboseFlag, useHtml);
    return;
  }
  else if( find_option("test","t",0) ){
    command_list(CMDFLAG_TEST, verboseFlag, useHtml);
    return;
  }
  else if( find_option("setting","s",0) ){
    command_list(CMDFLAG_SETTING, verboseFlag, useHtml);
    return;
  }
  else if( find_option("full","f",0) ){
    fossil_print("fossil commands:\n\n");
    command_list(CMDFLAG_1ST_TIER, verboseFlag, useHtml);
    fossil_print("\nfossil auxiliary commands:\n\n");
    command_list(CMDFLAG_2ND_TIER, verboseFlag, useHtml);
    fossil_print("\n%s", zOptions);
    fossil_print("\nfossil settings:\n\n");
    command_list(CMDFLAG_SETTING, verboseFlag, useHtml);
    fossil_print("\nfossil web pages:\n\n");
    command_list(CMDFLAG_WEBPAGE, verboseFlag, useHtml);
    fossil_print("\nfossil test commands (unsupported):\n\n");
    command_list(CMDFLAG_TEST, verboseFlag, useHtml);
    fossil_print("\n");
    version_cmd();
    return;
  }
  else if( find_option("everything","e",0) ){
    display_all_help(CMDFLAG_1ST_TIER | CMDFLAG_2ND_TIER | CMDFLAG_WEBPAGE |
                     CMDFLAG_SETTING | CMDFLAG_TEST, useHtml, 0);
    return;
  }
  verify_all_options();
  if( g.argc<3 ){
    z = g.argv[0];
    fossil_print(
      "Usage: %s help TOPIC\n"
      "Try \"%s help help\" or \"%s help -a\" for more options\n"
      "Frequently used commands:\n",
      z, z, z);
    command_list(CMDFLAG_1ST_TIER,verboseFlag,useHtml);
    if( !verboseFlag ) version_cmd();
    return;
  }
  zTopic = g.argv[2];
  isPage = ('/' == zTopic[0]) ? 1 : 0;
  if(isPage){
    zCmdOrPage = "page";
  }else if( commandsFlag ){
    mask = CMDFLAG_COMMAND;
    zCmdOrPage = "command";
  }else{
    zCmdOrPage = "command or setting";
  }
  rc = dispatch_name_search(g.argv[2], mask|CMDFLAG_PREFIX, &pCmd);
  if( rc ){
    int i, n;
    const char *az[5];
    if( rc==1 ){
      fossil_print("unknown %s: %s\n", zCmdOrPage, g.argv[2]);
    }else{
      fossil_print("ambiguous %s prefix: %s\n",
                 zCmdOrPage, g.argv[2]);
    }
    fossil_print("Did you mean one of these TOPICs:\n");
    n = dispatch_approx_match(g.argv[2], 5, az);
    for(i=0; i<n; i++){
      fossil_print("  *  %s\n", az[i]);
    }
    fossil_print("Also consider using:\n");
    fossil_print("   fossil help TOPIC     ;# show help on TOPIC\n");
    fossil_print("   fossil help -a        ;# show all commands\n");
    fossil_print("   fossil help -w        ;# show all web-pages\n");
    fossil_print("   fossil help -s        ;# show all settings\n");
    fossil_print("   fossil help -o        ;# show global options\n");
    fossil_exit(1);
  }
  z = pCmd->zHelp;
  if( z==0 ){
    fossil_fatal("no help available for the %s %s",
                 pCmd->zName, zCmdOrPage);
  }
  if( pCmd->eCmdFlags & CMDFLAG_SETTING ){
    const Setting *pSetting = db_find_setting(pCmd->zName, 0);
    char *zDflt = 0;
    if( pSetting!=0 && pSetting->def!=0 && *pSetting->def!=0 ){
      zDflt = mprintf(" (default: %s)", pSetting->def);
    }
    fossil_print("Setting: \"%s\"%s%s\n\n",
         pCmd->zName, zDflt!=0 ? zDflt : "",
         (pCmd->eCmdFlags & CMDFLAG_VERSIONABLE)!=0 ? " (versionable)" : ""
    );
    fossil_free(zDflt);
  }
  blob_init(&txt, 0, 0);
  if( useHtml ){
    help_to_html(z, &txt);
  }else{
    help_to_text(z, &txt);
  }
  fossil_print("%s\n", blob_str(&txt));
  blob_reset(&txt);
}

/*
** Return a pointer to the setting information array.
**
** This routine provides access to the aSetting2[] array which is created
** by the mkindex utility program and included with <page_index.h>.
*/
const Setting *setting_info(int *pnCount){
  if( pnCount ) *pnCount = (int)(sizeof(aSetting)/sizeof(aSetting[0])) - 1;
  return aSetting;
}

/*****************************************************************************
** A virtual table for accessing the information in aCommand[], and
** especially the help-text
*/

/* helptextVtab_vtab is a subclass of sqlite3_vtab which is
** underlying representation of the virtual table
*/
typedef struct helptextVtab_vtab helptextVtab_vtab;
struct helptextVtab_vtab {
  sqlite3_vtab base;  /* Base class - must be first */
  /* Add new fields here, as necessary */
};

/* helptextVtab_cursor is a subclass of sqlite3_vtab_cursor which will
** serve as the underlying representation of a cursor that scans
** over rows of the result
*/
typedef struct helptextVtab_cursor helptextVtab_cursor;
struct helptextVtab_cursor {
  sqlite3_vtab_cursor base;  /* Base class - must be first */
  /* Insert new fields here.  For this helptextVtab we only keep track
  ** of the rowid */
  sqlite3_int64 iRowid;      /* The rowid */
};

/*
** The helptextVtabConnect() method is invoked to create a new
** helptext virtual table.
**
** Think of this routine as the constructor for helptextVtab_vtab objects.
**
** All this routine needs to do is:
**
**    (1) Allocate the helptextVtab_vtab object and initialize all fields.
**
**    (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the
**        result set of queries against the virtual table will look like.
*/
static int helptextVtabConnect(
  sqlite3 *db,
  void *pAux,
  int argc, const char *const*argv,
  sqlite3_vtab **ppVtab,
  char **pzErr
){
  helptextVtab_vtab *pNew;
  int rc;

  rc = sqlite3_declare_vtab(db,
           "CREATE TABLE x(name,type,flags,helptext,formatted,html)"
       );
  if( rc==SQLITE_OK ){
    pNew = sqlite3_malloc( sizeof(*pNew) );
    *ppVtab = (sqlite3_vtab*)pNew;
    if( pNew==0 ) return SQLITE_NOMEM;
    memset(pNew, 0, sizeof(*pNew));
  }
  return rc;
}

/*
** This method is the destructor for helptextVtab_vtab objects.
*/
static int helptextVtabDisconnect(sqlite3_vtab *pVtab){
  helptextVtab_vtab *p = (helptextVtab_vtab*)pVtab;
  sqlite3_free(p);
  return SQLITE_OK;
}

/*
** Constructor for a new helptextVtab_cursor object.
*/
static int helptextVtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
  helptextVtab_cursor *pCur;
  pCur = sqlite3_malloc( sizeof(*pCur) );
  if( pCur==0 ) return SQLITE_NOMEM;
  memset(pCur, 0, sizeof(*pCur));
  *ppCursor = &pCur->base;
  return SQLITE_OK;
}

/*
** Destructor for a helptextVtab_cursor.
*/
static int helptextVtabClose(sqlite3_vtab_cursor *cur){
  helptextVtab_cursor *pCur = (helptextVtab_cursor*)cur;
  sqlite3_free(pCur);
  return SQLITE_OK;
}


/*
** Advance a helptextVtab_cursor to its next row of output.
*/
static int helptextVtabNext(sqlite3_vtab_cursor *cur){
  helptextVtab_cursor *pCur = (helptextVtab_cursor*)cur;
  pCur->iRowid++;
  return SQLITE_OK;
}

/*
** Return values of columns for the row at which the helptextVtab_cursor
** is currently pointing.
*/
static int helptextVtabColumn(
  sqlite3_vtab_cursor *cur,   /* The cursor */
  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
  int i                       /* Which column to return */
){
  helptextVtab_cursor *pCur = (helptextVtab_cursor*)cur;
  const CmdOrPage *pPage = aCommand + pCur->iRowid;
  switch( i ){
    case 0:  /* name */
      sqlite3_result_text(ctx, pPage->zName, -1, SQLITE_STATIC);
      break;
    case 1: { /* type */
      const char *zType = 0;
      if( pPage->eCmdFlags & CMDFLAG_COMMAND ){
        zType = "command";
      }else if( pPage->eCmdFlags & CMDFLAG_WEBPAGE ){
        zType = "webpage";
      }else if( pPage->eCmdFlags & CMDFLAG_SETTING ){
        zType = "setting";
      }
      sqlite3_result_text(ctx, zType, -1, SQLITE_STATIC);
      break;
    }
    case 2:  /* flags */
      sqlite3_result_int(ctx, pPage->eCmdFlags);
      break;
    case 3:  /* helptext */
      sqlite3_result_text(ctx, pPage->zHelp, -1, SQLITE_STATIC);
      break;
    case 4: { /* formatted */
      Blob txt;
      blob_init(&txt, 0, 0);
      help_to_text(pPage->zHelp, &txt);
      sqlite3_result_text(ctx, blob_str(&txt), -1, fossil_free);
      break;
    }
    case 5: { /* formatted */
      Blob txt;
      blob_init(&txt, 0, 0);
      help_to_html(pPage->zHelp, &txt);
      sqlite3_result_text(ctx, blob_str(&txt), -1, fossil_free);
      break;
    }
  }
  return SQLITE_OK;
}

/*
** Return the rowid for the current row.  In this implementation, the
** rowid is the same as the output value.
*/
static int helptextVtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
  helptextVtab_cursor *pCur = (helptextVtab_cursor*)cur;
  *pRowid = pCur->iRowid;
  return SQLITE_OK;
}

/*
** Return TRUE if the cursor has been moved off of the last
** row of output.
*/
static int helptextVtabEof(sqlite3_vtab_cursor *cur){
  helptextVtab_cursor *pCur = (helptextVtab_cursor*)cur;
  return pCur->iRowid>=MX_COMMAND;
}

/*
** This method is called to "rewind" the helptextVtab_cursor object back
** to the first row of output.  This method is always called at least
** once prior to any call to helptextVtabColumn() or helptextVtabRowid() or
** helptextVtabEof().
*/
static int helptextVtabFilter(
  sqlite3_vtab_cursor *pVtabCursor,
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  helptextVtab_cursor *pCur = (helptextVtab_cursor *)pVtabCursor;
  pCur->iRowid = 1;
  return SQLITE_OK;
}

/*
** SQLite will invoke this method one or more times while planning a query
** that uses the virtual table.  This routine needs to create
** a query plan for each invocation and compute an estimated cost for that
** plan.
*/
static int helptextVtabBestIndex(
  sqlite3_vtab *tab,
  sqlite3_index_info *pIdxInfo
){
  pIdxInfo->estimatedCost = (double)MX_COMMAND;
  pIdxInfo->estimatedRows = MX_COMMAND;
  return SQLITE_OK;
}

/*
** This following structure defines all the methods for the
** virtual table.
*/
static sqlite3_module helptextVtabModule = {
  /* iVersion    */ 0,
  /* xCreate     */ 0,  /* Helptext is eponymous and read-only */
  /* xConnect    */ helptextVtabConnect,
  /* xBestIndex  */ helptextVtabBestIndex,
  /* xDisconnect */ helptextVtabDisconnect,
  /* xDestroy    */ 0,
  /* xOpen       */ helptextVtabOpen,
  /* xClose      */ helptextVtabClose,
  /* xFilter     */ helptextVtabFilter,
  /* xNext       */ helptextVtabNext,
  /* xEof        */ helptextVtabEof,
  /* xColumn     */ helptextVtabColumn,
  /* xRowid      */ helptextVtabRowid,
  /* xUpdate     */ 0,
  /* xBegin      */ 0,
  /* xSync       */ 0,
  /* xCommit     */ 0,
  /* xRollback   */ 0,
  /* xFindMethod */ 0,
  /* xRename     */ 0,
  /* xSavepoint  */ 0,
  /* xRelease    */ 0,
  /* xRollbackTo */ 0,
  /* xShadowName */ 0,
  /* xIntegrity  */ 0
};


/*
** Register the helptext virtual table
*/
int helptext_vtab_register(sqlite3 *db){
  int rc = sqlite3_create_module(db, "helptext", &helptextVtabModule, 0);
  return rc;
}
/* End of the helptext virtual table
******************************************************************************/
Changes to src/doc.c.
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-
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
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/*
** Try to guess the mimetype from content.
**
** If the content is pure text, return NULL.
**
** For image types, attempt to return an appropriate mimetype
** name like "image/gif" or "image/jpeg".  
** name like "image/gif" or "image/jpeg".
**
** For any other binary type, return "unknown/unknown".
*/
const char *mimetype_from_content(Blob *pBlob){
  int i;
  int n;
  const unsigned char *x;

  static const char isBinary[] = {
     1, 1, 1, 1,  1, 1, 1, 1,    1, 0, 0, 1,  0, 0, 1, 1,
     1, 1, 1, 1,  1, 1, 1, 1,    1, 1, 1, 0,  1, 1, 1, 1,
  };

  /* A table of mimetypes based on file content prefixes
  */
  static const struct {
    const char *zPrefix;       /* The file prefix */
    int size;                  /* Length of the prefix */
    const char *z;             /* Identifying file text */
    const unsigned char sz1;   /* Length of the prefix */
    const unsigned char of2;   /* Offset to the second segment */
    const unsigned char sz2;   /* Size of the second segment */
    const unsigned char mn;    /* Minimum size of input */
    const char *zMimetype;     /* The corresponding mimetype */
  } aMime[] = {
    { "GIF87a",                  6, "image/gif"  },
    { "GIF89a",                  6, "image/gif"  },
    { "\211PNG\r\n\032\r",       8, "image/png"  },
    { "\377\332\377",            3, "image/jpeg" },
    { "GIF87a",                  6, 0, 0, 6,  "image/gif"  },
    { "GIF89a",                  6, 0, 0, 6,  "image/gif"  },
    { "\211PNG\r\n\032\n",       8, 0, 0, 8,  "image/png"  },
    { "\377\332\377",            3, 0, 0, 3,  "image/jpeg" },
    { "\377\330\377",            3, 0, 0, 3,  "image/jpeg" },
    { "RIFFWAVEfmt",             4, 8, 7, 15, "sound/wav"  },
  };

  if( !looks_like_binary(pBlob) ) {
    return 0;   /* Plain text */
  }
  x = (const unsigned char*)blob_buffer(pBlob);
  n = blob_size(pBlob);
  for(i=0; i<n; i++){
    unsigned char c = x[i];
    if( c<=0x1f && isBinary[c] ){
  for(i=0; i<count(aMime); i++){
    if( n<aMime[i].mn ) continue;
    if( memcmp(x, aMime[i].z, aMime[i].sz1)!=0 ) continue;
    if( aMime[i].sz2
      break;
    }
  }
  if( i>=n ){
    return 0;   /* Plain text */
  }
     && memcmp(x+aMime[i].of2, aMime[i].z+aMime[i].sz1, aMime[i].sz2)!=0
    ){
      continue;
    }
  for(i=0; i<sizeof(aMime)/sizeof(aMime[0]); i++){
    if( n>=aMime[i].size && memcmp(x, aMime[i].zPrefix, aMime[i].size)==0 ){
      return aMime[i].zMimetype;
    return aMime[i].zMimetype;
    }
  }
  return "unknown/unknown";
}

/* A table of mimetypes based on file suffixes.
** Suffixes must be in sorted order so that we can do a binary
** search to find the mimetype.
*/
static const struct {
  const char *zSuffix;       /* The file suffix */
  int size;                  /* Length of the suffix */
  const char *zMimetype;     /* The corresponding mimetype */
} aMime[] = {
  { "ai",         2, "application/postscript"            },
  { "aif",        3, "audio/x-aiff"                      },
  { "aifc",       4, "audio/x-aiff"                      },
  { "aiff",       4, "audio/x-aiff"                      },
  { "arj",        3, "application/x-arj-compressed"      },
  { "asc",        3, "text/plain"                        },
  { "asf",        3, "video/x-ms-asf"                    },
  { "asx",        3, "video/x-ms-asx"                    },
  { "au",         2, "audio/ulaw"                        },
  { "avi",        3, "video/x-msvideo"                   },
  { "bat",        3, "application/x-msdos-program"       },
  { "bcpio",      5, "application/x-bcpio"               },
  { "bin",        3, "application/octet-stream"          },
  { "bmp",        3, "image/bmp"                         },
  { "bz2",        3, "application/x-bzip2"               },
  { "bzip",       4, "application/x-bzip"                },
  { "c",          1, "text/plain"                        },
  { "cc",         2, "text/plain"                        },
  { "ccad",       4, "application/clariscad"             },
  { "cdf",        3, "application/x-netcdf"              },
  { "class",      5, "application/octet-stream"          },
  { "cod",        3, "application/vnd.rim.cod"           },
  { "com",        3, "application/x-msdos-program"       },
  { "cpio",       4, "application/x-cpio"                },
  { "cpt",        3, "application/mac-compactpro"        },
  { "cs",         2, "text/plain"                        },
  { "csh",        3, "application/x-csh"                 },
  { "css",        3, "text/css"                          },
  { "csv",        3, "text/csv"                          },
  { "dcr",        3, "application/x-director"            },
  { "deb",        3, "application/x-debian-package"      },
  { "dib",        3, "image/bmp"                         },
  { "dir",        3, "application/x-director"            },
  { "dl",         2, "video/dl"                          },
  { "dms",        3, "application/octet-stream"          },
  { "doc",        3, "application/msword"                },
  { "docx",       4, "application/vnd.openxmlformats-"
                     "officedocument.wordprocessingml.document"},
  { "dot",        3, "application/msword"                },
  { "dotx",       4, "application/vnd.openxmlformats-"
                     "officedocument.wordprocessingml.template"},
  { "drw",        3, "application/drafting"              },
  { "dvi",        3, "application/x-dvi"                 },
  { "dwg",        3, "application/acad"                  },
  { "dxf",        3, "application/dxf"                   },
  { "dxr",        3, "application/x-director"            },
  { "eps",        3, "application/postscript"            },
  { "etx",        3, "text/x-setext"                     },
  { "exe",        3, "application/octet-stream"          },
  { "ez",         2, "application/andrew-inset"          },
  { "f",          1, "text/plain"                        },
  { "f90",        3, "text/plain"                        },
  { "fli",        3, "video/fli"                         },
  { "flv",        3, "video/flv"                         },
  { "gif",        3, "image/gif"                         },
  { "gl",         2, "video/gl"                          },
  { "gtar",       4, "application/x-gtar"                },
  { "gz",         2, "application/x-gzip"                },
  { "h",          1, "text/plain"                        },
  { "hdf",        3, "application/x-hdf"                 },
  { "hh",         2, "text/plain"                        },
  { "hqx",        3, "application/mac-binhex40"          },
  { "htm",        3, "text/html"                         },
  { "html",       4, "text/html"                         },
  { "ice",        3, "x-conference/x-cooltalk"           },
  { "ico",        3, "image/vnd.microsoft.icon"          },
  { "ief",        3, "image/ief"                         },
  { "iges",       4, "model/iges"                        },
  { "igs",        3, "model/iges"                        },
  { "ips",        3, "application/x-ipscript"            },
  { "ipx",        3, "application/x-ipix"                },
  { "jad",        3, "text/vnd.sun.j2me.app-descriptor"  },
  { "jar",        3, "application/java-archive"          },
  { "jp2",        3, "image/jp2"                         },
  { "jpe",        3, "image/jpeg"                        },
  { "jpeg",       4, "image/jpeg"                        },
  { "jpg",        3, "image/jpeg"                        },
  { "js",         2, "text/javascript"                   },
  /* application/javascript is commonly used for JS, but the
  ** spec says text/javascript is correct:
  ** https://html.spec.whatwg.org/multipage/scripting.html
  ** #scriptingLanguages:javascript-mime-type */
  { "json",       4, "application/json"                  },
  { "kar",        3, "audio/midi"                        },
  { "latex",      5, "application/x-latex"               },
  { "lha",        3, "application/octet-stream"          },
  { "lsp",        3, "application/x-lisp"                },
  { "lzh",        3, "application/octet-stream"          },
  { "m",          1, "text/plain"                        },
  { "m3u",        3, "audio/x-mpegurl"                   },
  { "man",        3, "text/plain"                        },
  { "markdown",   8, "text/x-markdown"                   },
  { "md",         2, "text/x-markdown"                   },
  { "me",         2, "application/x-troff-me"            },
  { "mesh",       4, "model/mesh"                        },
  { "mid",        3, "audio/midi"                        },
  { "midi",       4, "audio/midi"                        },
  { "mif",        3, "application/x-mif"                 },
  { "mime",       4, "www/mime"                          },
  { "mjs",        3, "text/javascript" /*ES6 module*/    },
  { "mkd",        3, "text/x-markdown"                   },
  { "mov",        3, "video/quicktime"                   },
  { "movie",      5, "video/x-sgi-movie"                 },
  { "mp2",        3, "audio/mpeg"                        },
  { "mp3",        3, "audio/mpeg"                        },
  { "mp4",        3, "video/mp4"                         },
  { "mpe",        3, "video/mpeg"                        },
  { "mpeg",       4, "video/mpeg"                        },
  { "mpg",        3, "video/mpeg"                        },
  { "mpga",       4, "audio/mpeg"                        },
  { "ms",         2, "application/x-troff-ms"            },
  { "msh",        3, "model/mesh"                        },
  { "n",          1, "text/plain"                        },
  { "nc",         2, "application/x-netcdf"              },
  { "oda",        3, "application/oda"                   },
  { "odp",        3, "application/vnd.oasis.opendocument.presentation" },
  { "ods",        3, "application/vnd.oasis.opendocument.spreadsheet" },
  { "odt",        3, "application/vnd.oasis.opendocument.text" },
  { "ogg",        3, "application/ogg"                   },
  { "ogm",        3, "application/ogg"                   },
  { "pbm",        3, "image/x-portable-bitmap"           },
  { "pdb",        3, "chemical/x-pdb"                    },
  { "pdf",        3, "application/pdf"                   },
  { "pgm",        3, "image/x-portable-graymap"          },
  { "pgn",        3, "application/x-chess-pgn"           },
  { "pgp",        3, "application/pgp"                   },
  { "pikchr",     6, "text/x-pikchr"                     },
  { "pl",         2, "application/x-perl"                },
  { "pm",         2, "application/x-perl"                },
  { "png",        3, "image/png"                         },
  { "pnm",        3, "image/x-portable-anymap"           },
  { "pot",        3, "application/mspowerpoint"          },
  { "potx",       4, "application/vnd.openxmlformats-"
                     "officedocument.presentationml.template"},
  { "ppm",        3, "image/x-portable-pixmap"           },
  { "pps",        3, "application/mspowerpoint"          },
  { "ppsx",       4, "application/vnd.openxmlformats-"
                     "officedocument.presentationml.slideshow"},
  { "ppt",        3, "application/mspowerpoint"          },
  { "pptx",       4, "application/vnd.openxmlformats-"
                     "officedocument.presentationml.presentation"},
  { "ppz",        3, "application/mspowerpoint"          },
  { "pre",        3, "application/x-freelance"           },
  { "prt",        3, "application/pro_eng"               },
  { "ps",         2, "application/postscript"            },
  { "qt",         2, "video/quicktime"                   },
  { "ra",         2, "audio/x-realaudio"                 },
  { "ram",        3, "audio/x-pn-realaudio"              },
  { "rar",        3, "application/x-rar-compressed"      },
  { "ras",        3, "image/cmu-raster"                  },
  { "rgb",        3, "image/x-rgb"                       },
  { "rm",         2, "audio/x-pn-realaudio"              },
  { "roff",       4, "application/x-troff"               },
  { "rpm",        3, "audio/x-pn-realaudio-plugin"       },
  { "rtf",        3, "text/rtf"                          },
  { "rtx",        3, "text/richtext"                     },
  { "scm",        3, "application/x-lotusscreencam"      },
  { "set",        3, "application/set"                   },
  { "sgm",        3, "text/sgml"                         },
  { "sgml",       4, "text/sgml"                         },
  { "sh",         2, "application/x-sh"                  },
  { "shar",       4, "application/x-shar"                },
  { "silo",       4, "model/mesh"                        },
  { "sit",        3, "application/x-stuffit"             },
  { "skd",        3, "application/x-koan"                },
  { "skm",        3, "application/x-koan"                },
  { "skp",        3, "application/x-koan"                },
  { "skt",        3, "application/x-koan"                },
  { "smi",        3, "application/smil"                  },
  { "smil",       4, "application/smil"                  },
  { "snd",        3, "audio/basic"                       },
  { "sol",        3, "application/solids"                },
  { "spl",        3, "application/x-futuresplash"        },
  { "sql",        3, "application/sql"                   },
  { "src",        3, "application/x-wais-source"         },
  { "step",       4, "application/STEP"                  },
  { "stl",        3, "application/SLA"                   },
  { "stp",        3, "application/STEP"                  },
  { "sv4cpio",    7, "application/x-sv4cpio"             },
  { "sv4crc",     6, "application/x-sv4crc"              },
  { "svg",        3, "image/svg+xml"                     },
  { "swf",        3, "application/x-shockwave-flash"     },
  { "t",          1, "application/x-troff"               },
  { "tar",        3, "application/x-tar"                 },
  { "tcl",        3, "application/x-tcl"                 },
  { "tex",        3, "application/x-tex"                 },
  { "texi",       4, "application/x-texinfo"             },
  { "texinfo",    7, "application/x-texinfo"             },
  { "tgz",        3, "application/x-tar-gz"              },
  { "th1",        3, "application/x-th1"                 },
  { "tif",        3, "image/tiff"                        },
  { "tiff",       4, "image/tiff"                        },
  { "tr",         2, "application/x-troff"               },
  { "tsi",        3, "audio/TSP-audio"                   },
  { "tsp",        3, "application/dsptype"               },
  { "tsv",        3, "text/tab-separated-values"         },
  { "txt",        3, "text/plain"                        },
  { "unv",        3, "application/i-deas"                },
  { "ustar",      5, "application/x-ustar"               },
  { "vb",         2, "text/plain"                        },
  { "vcd",        3, "application/x-cdlink"              },
  { "vda",        3, "application/vda"                   },
  { "viv",        3, "video/vnd.vivo"                    },
  { "vivo",       4, "video/vnd.vivo"                    },
  { "vrml",       4, "model/vrml"                        },
  { "wasm",       4, "application/wasm"                  },
  { "wav",        3, "audio/x-wav"                       },
  { "wax",        3, "audio/x-ms-wax"                    },
  { "webp",       4, "image/webp"                        },
  { "wiki",       4, "text/x-fossil-wiki"                },
  { "wma",        3, "audio/x-ms-wma"                    },
  { "wmv",        3, "video/x-ms-wmv"                    },
  { "wmx",        3, "video/x-ms-wmx"                    },
  { "wrl",        3, "model/vrml"                        },
  { "wvx",        3, "video/x-ms-wvx"                    },
  { "xbm",        3, "image/x-xbitmap"                   },
  { "xlc",        3, "application/vnd.ms-excel"          },
  { "xll",        3, "application/vnd.ms-excel"          },
  { "xlm",        3, "application/vnd.ms-excel"          },
  { "xls",        3, "application/vnd.ms-excel"          },
  { "xlsx",       4, "application/vnd.openxmlformats-"
                     "officedocument.spreadsheetml.sheet"},
  { "xlw",        3, "application/vnd.ms-excel"          },
  { "xml",        3, "text/xml"                          },
  { "xpm",        3, "image/x-xpixmap"                   },
  { "xsl",        3, "text/xml"                          },
  { "xslt",       4, "text/xml"                          },
  { "xwd",        3, "image/x-xwindowdump"               },
  { "xyz",        3, "chemical/x-pdb"                    },
  { "zip",        3, "application/zip"                   },
};

/*
** Verify that all entries in the aMime[] table are in sorted order.
** Abort with a fatal error if any is out-of-order.
*/
static void mimetype_verify(void){
  int i;
  for(i=1; i<count(aMime); i++){
    if( fossil_strcmp(aMime[i-1].zSuffix,aMime[i].zSuffix)>=0 ){
      fossil_panic("mimetypes out of sequence: %s before %s",
                   aMime[i-1].zSuffix, aMime[i].zSuffix);
    }
  }
}

/*
** Looks in the contents of the "mimetypes" setting for a suffix
** matching zSuffix. If found, it returns the configured value
** in memory owned by the app (i.e. do not free() it), else it
** returns 0.
**
** The mimetypes setting is expected to be a list of file extensions
** and mimetypes, with one such mapping per line. A leading '.'  on
** extensions is permitted for compatibility with lists imported from
** other tools which require them.
*/
static const char *mimetype_from_name_custom(const char *zSuffix){
  static char * zList = 0;
  static char const * zEnd = 0;
  static int once = 0;
  char * z;
  int tokenizerState /* 0=expecting a key, 1=skip next token,
                     ** 2=accept next token */;
  if(once==0){
    once = 1;
    zList = db_get("mimetypes",0);
    if(zList==0){
      return 0;
    }
    /* Transform zList to simplify the main loop:
       replace non-newline spaces with NUL bytes. */
    zEnd = zList + strlen(zList);
    for(z = zList; z<zEnd; ++z){
      if('\n'==*z) continue;
      else if(fossil_isspace(*z)){
        *z = 0;
      }
    }
  }else if(zList==0){
    return 0;
  }
  tokenizerState = 0;
  z = zList;
  while( z<zEnd ){
    if(*z==0){
      ++z;
      continue;
    }
    else if('\n'==*z){
      if(2==tokenizerState){
        /* We were expecting a value for a successful match
           here, but got no value. Bail out. */
        break;
      }else{
        /* May happen on malformed inputs. Skip this record. */
        tokenizerState = 0;
        ++z;
        continue;
      }
    }
    switch(tokenizerState){
      case 0:{ /* This is a file extension */
        static char * zCase = 0;
        if('.'==*z){
          /*ignore an optional leading dot, for compatibility
            with some external mimetype lists*/;
          if(++z==zEnd){
            break;
          }
        }
        if(zCase<z){
          /*we have not yet case-folded this section: lower-case it*/
          for(zCase = z; zCase<zEnd && *zCase!=0; ++zCase){
            if(!(0x80 & *zCase)){
              *zCase = (char)fossil_tolower(*zCase);
            }
          }
        }
        if(strcmp(z,zSuffix)==0){
          tokenizerState = 2 /* Match: accept the next value. */;
        }else{
          tokenizerState = 1 /* No match: skip the next value. */;
        }
        z += strlen(z);
        break;
      }
      case 1: /* This is a value, but not a match. Skip it. */
        z += strlen(z);
        break;
      case 2: /* This is the value which matched the previous key. */;
        return z;
      default:
        assert(!"cannot happen - invalid tokenizerState value.");
    }
  }
  return 0;
}

/*
** Emit Javascript which applies (or optionally can apply) to both the
** /doc and /wiki pages. None of this implements required
** functionality, just nice-to-haves. Any calls after the first are
** no-ops.
*/
void document_emit_js(void){
  static int once = 0;
  if(0==once++){
    builtin_fossil_js_bundle_or("pikchr", NULL);
    style_script_begin(__FILE__,__LINE__);
    CX("window.addEventListener('load', "
       "()=>window.fossil.pikchr.addSrcView(), "
       "false);\n");
    style_script_end();
  }
}

/*
** Guess the mime-type of a document based on its name.
** Guess the mimetype of a document based on its name.
*/
const char *mimetype_from_name(const char *zName){
  const char *z;
  int i;
  int first, last;
  int len;
  char zSuffix[20];

  /* A table of mimetypes based on file suffixes. 
  ** Suffixes must be in sorted order so that we can do a binary
  ** search to find the mime-type

#ifdef FOSSIL_DEBUG
  /* This is test code to make sure the table above is in the correct
  ** order
  */
  static const struct {
  if( fossil_strcmp(zName, "mimetype-test")==0 ){
    const char *zSuffix;       /* The file suffix */
    int size;                  /* Length of the suffix */
    const char *zMimetype;     /* The corresponding mimetype */
  } aMime[] = {
    mimetype_verify();
    return "ok";
  }
#endif
    { "ai",         2, "application/postscript"            },
    { "aif",        3, "audio/x-aiff"                      },
    { "aifc",       4, "audio/x-aiff"                      },
    { "aiff",       4, "audio/x-aiff"                      },
    { "arj",        3, "application/x-arj-compressed"      },
    { "asc",        3, "text/plain"                        },
    { "asf",        3, "video/x-ms-asf"                    },
    { "asx",        3, "video/x-ms-asx"                    },
    { "au",         2, "audio/ulaw"                        },
    { "avi",        3, "video/x-msvideo"                   },
    { "bat",        3, "application/x-msdos-program"       },
    { "bcpio",      5, "application/x-bcpio"               },
    { "bin",        3, "application/octet-stream"          },
    { "c",          1, "text/plain"                        },
    { "cc",         2, "text/plain"                        },
    { "ccad",       4, "application/clariscad"             },
    { "cdf",        3, "application/x-netcdf"              },
    { "class",      5, "application/octet-stream"          },
    { "cod",        3, "application/vnd.rim.cod"           },
    { "com",        3, "application/x-msdos-program"       },
    { "cpio",       4, "application/x-cpio"                },
    { "cpt",        3, "application/mac-compactpro"        },
    { "csh",        3, "application/x-csh"                 },
    { "css",        3, "text/css"                          },
    { "dcr",        3, "application/x-director"            },
    { "deb",        3, "application/x-debian-package"      },
    { "dir",        3, "application/x-director"            },
    { "dl",         2, "video/dl"                          },
    { "dms",        3, "application/octet-stream"          },
    { "doc",        3, "application/msword"                },
    { "drw",        3, "application/drafting"              },
    { "dvi",        3, "application/x-dvi"                 },
    { "dwg",        3, "application/acad"                  },
    { "dxf",        3, "application/dxf"                   },
    { "dxr",        3, "application/x-director"            },
    { "eps",        3, "application/postscript"            },
    { "etx",        3, "text/x-setext"                     },
    { "exe",        3, "application/octet-stream"          },
    { "ez",         2, "application/andrew-inset"          },
    { "f",          1, "text/plain"                        },
    { "f90",        3, "text/plain"                        },
    { "fli",        3, "video/fli"                         },
    { "flv",        3, "video/flv"                         },
    { "gif",        3, "image/gif"                         },
    { "gl",         2, "video/gl"                          },
    { "gtar",       4, "application/x-gtar"                },
    { "gz",         2, "application/x-gzip"                },
    { "hdf",        3, "application/x-hdf"                 },
    { "hh",         2, "text/plain"                        },
    { "hqx",        3, "application/mac-binhex40"          },
    { "h",          1, "text/plain"                        },
    { "htm",        3, "text/html"                         },
    { "html",       4, "text/html"                         },
    { "ice",        3, "x-conference/x-cooltalk"           },
    { "ief",        3, "image/ief"                         },
    { "iges",       4, "model/iges"                        },
    { "igs",        3, "model/iges"                        },
    { "ips",        3, "application/x-ipscript"            },
    { "ipx",        3, "application/x-ipix"                },
    { "jad",        3, "text/vnd.sun.j2me.app-descriptor"  },
    { "jar",        3, "application/java-archive"          },
    { "jpeg",       4, "image/jpeg"                        },
    { "jpe",        3, "image/jpeg"                        },
    { "jpg",        3, "image/jpeg"                        },
    { "js",         2, "application/x-javascript"          },
    { "kar",        3, "audio/midi"                        },
    { "latex",      5, "application/x-latex"               },
    { "lha",        3, "application/octet-stream"          },
    { "lsp",        3, "application/x-lisp"                },
    { "lzh",        3, "application/octet-stream"          },
    { "m",          1, "text/plain"                        },
    { "m3u",        3, "audio/x-mpegurl"                   },
    { "man",        3, "application/x-troff-man"           },
    { "me",         2, "application/x-troff-me"            },
    { "mesh",       4, "model/mesh"                        },
    { "mid",        3, "audio/midi"                        },
    { "midi",       4, "audio/midi"                        },
    { "mif",        3, "application/x-mif"                 },
    { "mime",       4, "www/mime"                          },
    { "movie",      5, "video/x-sgi-movie"                 },
    { "mov",        3, "video/quicktime"                   },
    { "mp2",        3, "audio/mpeg"                        },
    { "mp2",        3, "video/mpeg"                        },
    { "mp3",        3, "audio/mpeg"                        },
    { "mpeg",       4, "video/mpeg"                        },
    { "mpe",        3, "video/mpeg"                        },
    { "mpga",       4, "audio/mpeg"                        },
    { "mpg",        3, "video/mpeg"                        },
    { "ms",         2, "application/x-troff-ms"            },
    { "msh",        3, "model/mesh"                        },
    { "nc",         2, "application/x-netcdf"              },
    { "oda",        3, "application/oda"                   },
    { "ogg",        3, "application/ogg"                   },
    { "ogm",        3, "application/ogg"                   },
    { "pbm",        3, "image/x-portable-bitmap"           },
    { "pdb",        3, "chemical/x-pdb"                    },
    { "pdf",        3, "application/pdf"                   },
    { "pgm",        3, "image/x-portable-graymap"          },
    { "pgn",        3, "application/x-chess-pgn"           },
    { "pgp",        3, "application/pgp"                   },
    { "pl",         2, "application/x-perl"                },
    { "pm",         2, "application/x-perl"                },
    { "png",        3, "image/png"                         },
    { "pnm",        3, "image/x-portable-anymap"           },
    { "pot",        3, "application/mspowerpoint"          },
    { "ppm",        3, "image/x-portable-pixmap"           },
    { "pps",        3, "application/mspowerpoint"          },
    { "ppt",        3, "application/mspowerpoint"          },
    { "ppz",        3, "application/mspowerpoint"          },
    { "pre",        3, "application/x-freelance"           },
    { "prt",        3, "application/pro_eng"               },
    { "ps",         2, "application/postscript"            },
    { "qt",         2, "video/quicktime"                   },
    { "ra",         2, "audio/x-realaudio"                 },
    { "ram",        3, "audio/x-pn-realaudio"              },
    { "rar",        3, "application/x-rar-compressed"      },
    { "ras",        3, "image/cmu-raster"                  },
    { "ras",        3, "image/x-cmu-raster"                },
    { "rgb",        3, "image/x-rgb"                       },
    { "rm",         2, "audio/x-pn-realaudio"              },
    { "roff",       4, "application/x-troff"               },
    { "rpm",        3, "audio/x-pn-realaudio-plugin"       },
    { "rtf",        3, "application/rtf"                   },
    { "rtf",        3, "text/rtf"                          },
    { "rtx",        3, "text/richtext"                     },
    { "scm",        3, "application/x-lotusscreencam"      },
    { "set",        3, "application/set"                   },
    { "sgml",       4, "text/sgml"                         },
    { "sgm",        3, "text/sgml"                         },
    { "sh",         2, "application/x-sh"                  },
    { "shar",       4, "application/x-shar"                },
    { "silo",       4, "model/mesh"                        },
    { "sit",        3, "application/x-stuffit"             },
    { "skd",        3, "application/x-koan"                },
    { "skm",        3, "application/x-koan"                },
    { "skp",        3, "application/x-koan"                },
    { "skt",        3, "application/x-koan"                },
    { "smi",        3, "application/smil"                  },
    { "smil",       4, "application/smil"                  },
    { "snd",        3, "audio/basic"                       },
    { "sol",        3, "application/solids"                },
    { "spl",        3, "application/x-futuresplash"        },
    { "src",        3, "application/x-wais-source"         },
    { "step",       4, "application/STEP"                  },
    { "stl",        3, "application/SLA"                   },
    { "stp",        3, "application/STEP"                  },
    { "sv4cpio",    7, "application/x-sv4cpio"             },
    { "sv4crc",     6, "application/x-sv4crc"              },
    { "swf",        3, "application/x-shockwave-flash"     },
    { "t",          1, "application/x-troff"               },
    { "tar",        3, "application/x-tar"                 },
    { "tcl",        3, "application/x-tcl"                 },
    { "tex",        3, "application/x-tex"                 },
    { "texi",       4, "application/x-texinfo"             },
    { "texinfo",    7, "application/x-texinfo"             },
    { "tgz",        3, "application/x-tar-gz"              },
    { "tiff",       4, "image/tiff"                        },
    { "tif",        3, "image/tiff"                        },
    { "tr",         2, "application/x-troff"               },
    { "tsi",        3, "audio/TSP-audio"                   },
    { "tsp",        3, "application/dsptype"               },
    { "tsv",        3, "text/tab-separated-values"         },
    { "txt",        3, "text/plain"                        },
    { "unv",        3, "application/i-deas"                },
    { "ustar",      5, "application/x-ustar"               },
    { "vcd",        3, "application/x-cdlink"              },
    { "vda",        3, "application/vda"                   },
    { "viv",        3, "video/vnd.vivo"                    },
    { "vivo",       4, "video/vnd.vivo"                    },
    { "vrml",       4, "model/vrml"                        },
    { "wav",        3, "audio/x-wav"                       },
    { "wax",        3, "audio/x-ms-wax"                    },
    { "wiki",       4, "application/x-fossil-wiki"         },
    { "wma",        3, "audio/x-ms-wma"                    },
    { "wmv",        3, "video/x-ms-wmv"                    },
    { "wmx",        3, "video/x-ms-wmx"                    },
    { "wrl",        3, "model/vrml"                        },
    { "wvx",        3, "video/x-ms-wvx"                    },
    { "xbm",        3, "image/x-xbitmap"                   },
    { "xlc",        3, "application/vnd.ms-excel"          },
    { "xll",        3, "application/vnd.ms-excel"          },
    { "xlm",        3, "application/vnd.ms-excel"          },
    { "xls",        3, "application/vnd.ms-excel"          },
    { "xlw",        3, "application/vnd.ms-excel"          },
    { "xml",        3, "text/xml"                          },
    { "xpm",        3, "image/x-xpixmap"                   },
    { "xwd",        3, "image/x-xwindowdump"               },
    { "xyz",        3, "chemical/x-pdb"                    },
    { "zip",        3, "application/zip"                   },
  };

  z = zName;
  for(i=0; zName[i]; i++){
    if( zName[i]=='.' ) z = &zName[i+1];
  }
  len = strlen(z);
  if( len<sizeof(zSuffix)-1 ){
    strcpy(zSuffix, z);
    for(i=0; zSuffix[i]; i++) zSuffix[i] = tolower(zSuffix[i]);
  if( len<(int)sizeof(zSuffix)-1 ){
    sqlite3_snprintf(sizeof(zSuffix), zSuffix, "%s", z);
    for(i=0; zSuffix[i]; i++) zSuffix[i] = fossil_tolower(zSuffix[i]);
    z = mimetype_from_name_custom(zSuffix);
    if(z!=0){
      return z;
    }
    first = 0;
    last = sizeof(aMime)/sizeof(aMime[0]);
    last = count(aMime) - 1;
    while( first<=last ){
      int c;
      i = (first+last)/2;
      c = strcmp(zSuffix, aMime[i].zSuffix);
      c = fossil_strcmp(zSuffix, aMime[i].zSuffix);
      if( c==0 ) return aMime[i].zMimetype;
      if( c<0 ){
        last = i-1;
      }else{
        first = i+1;
      }
    }
  }
  return "application/x-fossil-artifact";
}

/*
** COMMAND: test-mimetype
**
** Usage: %fossil test-mimetype FILENAME...
**
** Return the deduced mimetype for each file listed.
**
** If Fossil is compiled with -DFOSSIL_DEBUG then the "mimetype-test"
** filename is special and verifies the integrity of the mimetype table.
** It should return "ok".
*/
void mimetype_test_cmd(void){
  int i;
  mimetype_verify();
  db_find_and_open_repository(0, 0);
  for(i=2; i<g.argc; i++){
    fossil_print("%-20s -> %s\n", g.argv[i], mimetype_from_name(g.argv[i]));
  }
}

/*
** WEBPAGE: mimetype_list
**
** Show the built-in table used to guess embedded document mimetypes
** from file suffixes.
*/
void mimetype_list_page(void){
  int i;
  char *zCustomList = 0;    /* value of the mimetypes setting */
  int nCustomEntries = 0;   /* number of entries in the mimetypes
                            ** setting */
  mimetype_verify();
  style_header("Mimetype List");
  @ <p>The Fossil <a href="%R/help?cmd=/doc">/doc</a> page uses filename
  @ suffixes and the following tables to guess at the appropriate mimetype
  @ for each document. Mimetypes may be customized and overridden using
  @ <a href="%R/help?cmd=mimetypes">the mimetypes config setting</a>.</p>
  zCustomList = db_get("mimetypes",0);
  if( zCustomList!=0 ){
    Blob list, entry, key, val;
    @ <h1>Repository-specific mimetypes</h1>
    @ <p>The following extension-to-mimetype mappings are defined via
    @ the <a href="%R/help?cmd=mimetypes">mimetypes setting</a>.</p>
    @ <table class='sortable mimetypetable' border=1 cellpadding=0 \
    @ data-column-types='tt' data-init-sort='0'>
    @ <thead>
    @ <tr><th>Suffix<th>Mimetype
    @ </thead>
    @ <tbody>
    blob_set(&list, zCustomList);
    while( blob_line(&list, &entry)>0 ){
      const char *zKey;
      if( blob_token(&entry, &key)==0 ) continue;
      if( blob_token(&entry, &val)==0 ) continue;
      zKey = blob_str(&key);
      if( zKey[0]=='.' ) zKey++;
      @ <tr><td>%h(zKey)<td>%h(blob_str(&val))</tr>
      nCustomEntries++;
    }
    fossil_free(zCustomList);
    if( nCustomEntries==0 ){
      /* This can happen if the option is set to an empty/space-only
      ** value. */
      @ <tr><td colspan="2"><em>none</em></tr>
    }
    @ </tbody></table>
  }
  @ <h1>Default built-in mimetypes</h1>
  if(nCustomEntries>0){
    @ <p>Entries starting with an exclamation mark <em><strong>!</strong></em>
    @ are overwritten by repository-specific settings.</p>
  }
  @ <table class='sortable mimetypetable' border=1 cellpadding=0 \
  @ data-column-types='tt' data-init-sort='1'>
  @ <thead>
  @ <tr><th>Suffix<th>Mimetype
  @ </thead>
  @ <tbody>
  for(i=0; i<count(aMime); i++){
    const char *zFlag = "";
    if(nCustomEntries>0 &&
       mimetype_from_name_custom(aMime[i].zSuffix)!=0){
      zFlag = "<em><strong>!</strong></em> ";
    }
    @ <tr><td>%s(zFlag)%h(aMime[i].zSuffix)<td>%h(aMime[i].zMimetype)</tr>
  }
  @ </tbody></table>
  style_table_sorter();
  style_finish_page();
}

/*
** Check to see if the file in the pContent blob is "embedded HTML".  Return
** true if it is, and fill pTitle with the document title.
**
** An "embedded HTML" file is HTML that lacks a header and a footer.  The
** standard Fossil header is prepended and the standard Fossil footer is
** appended.  Otherwise, the file is displayed without change.
**
** Embedded HTML must be contained in a <div class='fossil-doc'> element.
** If that <div> also contains a data-title attribute, then the
** value of that attribute is extracted into pTitle and becomes the title
** of the document.
*/
int doc_is_embedded_html(Blob *pContent, Blob *pTitle){
  const char *zIn = blob_str(pContent);
  const char *zAttr;
  const char *zValue;
  int nAttr, nValue;
  int seenClass = 0;
  int seenTitle = 0;

  while( fossil_isspace(zIn[0]) ) zIn++;
  if( fossil_strnicmp(zIn,"<div",4)!=0 ) return 0;
  zIn += 4;
  while( zIn[0] ){
    if( fossil_isspace(zIn[0]) ) zIn++;
    if( zIn[0]=='>' ) break;
    zAttr = zIn;
    while( fossil_isalnum(zIn[0]) || zIn[0]=='-' ) zIn++;
    nAttr = (int)(zIn - zAttr);
    while( fossil_isspace(zIn[0]) ) zIn++;
    if( zIn[0]!='=' ) continue;
    zIn++;
    while( fossil_isspace(zIn[0]) ) zIn++;
    if( zIn[0]=='"' || zIn[0]=='\'' ){
      char cDelim = zIn[0];
      zIn++;
      zValue = zIn;
      while( zIn[0] && zIn[0]!=cDelim ) zIn++;
      if( zIn[0]==0 ) return 0;
      nValue = (int)(zIn - zValue);
      zIn++;
    }else{
      zValue = zIn;
      while( zIn[0]!=0 && zIn[0]!='>' && zIn[0]!='/'
            && !fossil_isspace(zIn[0]) ) zIn++;
      if( zIn[0]==0 ) return 0;
      nValue = (int)(zIn - zValue);
    }
    if( nAttr==5 && fossil_strnicmp(zAttr,"class",5)==0 ){
      if( nValue!=10 || fossil_strnicmp(zValue,"fossil-doc",10)!=0 ) return 0;
      seenClass = 1;
      if( seenTitle ) return 1;
    }
    if( nAttr==10 && fossil_strnicmp(zAttr,"data-title",10)==0 ){
      /* The text argument to data-title="" will have had any characters that
      ** are special to HTML encoded.  We need to decode these before turning
      ** the text into a title, as the title text will be reencoded later */
      char *zTitle = mprintf("%.*s", nValue, zValue);
      int i;
      for(i=0; fossil_isspace(zTitle[i]); i++){}
      html_to_plaintext(zTitle+i, pTitle);
      fossil_free(zTitle);
      seenTitle = 1;
      if( seenClass ) return 1;
    }
  }
  return seenClass;
}

/*
** Look for a file named zName in the check-in with RID=vid.  Load the content
** of that file into pContent and return the RID for the file.  Or return 0
** if the file is not found or could not be loaded.
*/
int doc_load_content(int vid, const char *zName, Blob *pContent){
  int writable;
  int rid;   /* The RID of the file being loaded */
  if( db_is_protected(PROTECT_READONLY)
   || !db_is_writeable("repository")
  ){
    writable = 0;
  }else{
    writable = 1;
  }
  if( writable ){
    db_end_transaction(0);
    db_begin_write();
  }
  if( !db_table_exists("repository", "vcache") || !writable ){
    db_multi_exec(
      "CREATE %s TABLE IF NOT EXISTS vcache(\n"
      "  vid INTEGER,         -- check-in ID\n"
      "  fname TEXT,          -- filename\n"
      "  rid INTEGER,         -- artifact ID\n"
      "  PRIMARY KEY(vid,fname)\n"
      ") WITHOUT ROWID", writable ? "" : "TEMPORARY"
    );
  }
  if( !db_exists("SELECT 1 FROM vcache WHERE vid=%d", vid) ){
    db_multi_exec(
      "DELETE FROM vcache;\n"
      "CREATE VIRTUAL TABLE IF NOT EXISTS temp.foci USING files_of_checkin;\n"
      "INSERT INTO vcache(vid,fname,rid)"
      "  SELECT checkinID, filename, blob.rid FROM foci, blob"
      "   WHERE blob.uuid=foci.uuid"
      "     AND foci.checkinID=%d;",
      vid
    );
  }
  rid = db_int(0, "SELECT rid FROM vcache"
                  " WHERE vid=%d AND fname=%Q", vid, zName);
  if( rid && content_get(rid, pContent)==0 ){
    rid = 0;
  }
  return rid;
}

/*
** Check to verify that z[i] is contained within HTML markup.
**
** This works by looking backwards in the string for the most recent
** '<' or '>' character.  If a '<' is found first, then we assume that
** z[i] is within markup.  If a '>' is seen or neither character is seen,
** then z[i] is not within markup.
*/
static int isWithinHtmlMarkup(const char *z, int i){
  while( i>=0 && z[i]!='>' && z[i]!='<' ){ i--; }
  return z[i]=='<';
}

/*
** Check to see if z[i] is contained within an href='...' of markup.
*/
static int isWithinHref(const char *z, int i){
  while( i>5
     && !fossil_isspace(z[i])
     && z[i]!='\'' && z[i]!='"'
     && z[i]!='>'
  ){ i--; }
  if( i<=6 ) return 0;
  if( z[i]!='\'' && z[i]!='\"' ) return 0;
  if( strncmp(&z[i-5],"href=",5)!=0 ) return 0;
  if( !fossil_isspace(z[i-6]) ) return 0;
  return 1;
}

/*
** Transfer content to the output.  During the transfer, when text of
** the following form is seen:
**
**       href="$ROOT/..."
**       action="$ROOT/..."
**       href=".../doc/$CURRENT/..."
**
** Convert $ROOT to the root URI of the repository, and $CURRENT to the
** version number of the /doc/ document currently being displayed (if any).
** Allow ' in place of " and any case for href or action.
**
** Efforts are made to limit this translation to cases where the text is
** fully contained with an HTML markup element.
*/
void convert_href_and_output(Blob *pIn){
  int i, base;
  int n = blob_size(pIn);
  char *z = blob_buffer(pIn);
  for(base=0, i=7; i<n; i++){
    if( z[i]=='$'
     && strncmp(&z[i],"$ROOT/", 6)==0
     && (z[i-1]=='\'' || z[i-1]=='"')
     && i-base>=9
     && ((fossil_strnicmp(&z[i-6],"href=",5)==0 && fossil_isspace(z[i-7])) ||
         (fossil_strnicmp(&z[i-8],"action=",7)==0 && fossil_isspace(z[i-9])) )
     && isWithinHtmlMarkup(z, i-6)
    ){
      blob_append(cgi_output_blob(), &z[base], i-base);
      blob_appendf(cgi_output_blob(), "%R");
      base = i+5;
    }else
    if( z[i]=='$'
     && strncmp(&z[i-5],"/doc/$CURRENT/", 11)==0
     && isWithinHref(z,i-5)
     && isWithinHtmlMarkup(z, i-5)
     && strncmp(g.zPath, "doc/",4)==0
    ){
      int j;
      for(j=7; g.zPath[j] && g.zPath[j]!='/'; j++){}
      blob_append(cgi_output_blob(), &z[base], i-base);
      blob_appendf(cgi_output_blob(), "%.*s", j-4, g.zPath+4);
      base = i+8;
    }
  }
  blob_append(cgi_output_blob(), &z[base], i-base);
}

/*
** Render a document as the reply to the HTTP request.  The body
** of the document is contained in pBody.  The body might be binary.
** The mimetype is in zMimetype.
*/
void document_render(
  Blob *pBody,                  /* Document content */
  const char *zMime,            /* MIME-type */
  const char *zDefaultTitle,    /* Default title */
  const char *zFilename         /* Name of the file being rendered */
){
  Blob title;
  int isPopup = P("popup")!=0;
  blob_init(&title,0,0);
  if( fossil_strcmp(zMime, "text/x-fossil-wiki")==0 ){
    Blob tail;
    style_adunit_config(ADUNIT_RIGHT_OK);
    if( wiki_find_title(pBody, &title, &tail) ){
      if( !isPopup ) style_header("%s", blob_str(&title));
      wiki_convert(&tail, 0, WIKI_BUTTONS);
    }else{
      if( !isPopup ) style_header("%s", zDefaultTitle);
      wiki_convert(pBody, 0, WIKI_BUTTONS);
    }
    if( !isPopup ){
      document_emit_js();
      style_finish_page();
    }
  }else if( fossil_strcmp(zMime, "text/x-markdown")==0 ){
    Blob tail = BLOB_INITIALIZER;
    markdown_to_html(pBody, &title, &tail);
    if( !isPopup ){
      if( blob_size(&title)>0 ){
        style_header("%s", blob_str(&title));
      }else{
        style_header("%s", zDefaultTitle);
      }
    }
    convert_href_and_output(&tail);
    if( !isPopup ){
      document_emit_js();
      style_finish_page();
    }
  }else if( fossil_strcmp(zMime, "text/plain")==0 ){
    style_header("%s", zDefaultTitle);
    @ <blockquote><pre>
    @ %h(blob_str(pBody))
    @ </pre></blockquote>
    document_emit_js();
    style_finish_page();
  }else if( fossil_strcmp(zMime, "text/html")==0
            && doc_is_embedded_html(pBody, &title) ){
    if( blob_size(&title)==0 ) blob_append(&title,zFilename,-1);
    if( !isPopup ) style_header("%s", blob_str(&title));
    convert_href_and_output(pBody);
    if( !isPopup ){
      document_emit_js();
      style_finish_page();
    }
  }else if( fossil_strcmp(zMime, "text/x-pikchr")==0 ){
    style_adunit_config(ADUNIT_RIGHT_OK);
    if( !isPopup ) style_header("%s", zDefaultTitle);
    wiki_render_by_mimetype(pBody, zMime);
    if( !isPopup ) style_finish_page();
#ifdef FOSSIL_ENABLE_TH1_DOCS
  }else if( Th_AreDocsEnabled() &&
            fossil_strcmp(zMime, "application/x-th1")==0 ){
    int raw = P("raw")!=0;
    if( !raw ){
      Blob tail;
      blob_zero(&tail);
      if( wiki_find_title(pBody, &title, &tail) ){
        style_header("%s", blob_str(&title));
        Th_Render(blob_str(&tail));
        blob_reset(&tail);
      }else{
        style_header("%h", zFilename);
        Th_Render(blob_str(pBody));
      }
    }else{
      Th_Render(blob_str(pBody));
    }
    if( !raw ){
      document_emit_js();
      style_finish_page();
    }
#endif
  }else{
    fossil_free(style_csp(1));
    cgi_set_content_type(zMime);
    cgi_set_content(pBody);
  }
}


/*
** WEBPAGE: uv
** WEBPAGE: doc
** URL: /doc?name=BASELINE/PATH
** URL: /doc/BASELINE/PATH
** URL: /uv/FILE
** URL: /doc/CHECKIN/FILE
**
** BASELINE can be either a baseline uuid prefix or magic words "tip"
** to me the most recently checked in baseline or "ckout" to mean the
** content of the local checkout, if any.  PATH is the relative pathname
** of some file.  This method returns the file content.
** CHECKIN can be either tag or hash prefix or timestamp identifying a
** particular check-in, or the name of a branch (meaning the most recent
** check-in on that branch) or one of various magic words:
**
**     "tip"      means the most recent check-in
**
**     "ckout"    means the current check-out, if the server is run from
**                within a check-out, otherwise it is the same as "tip"
**
**     "latest"   means use the most recent check-in for the document
**                regardless of what branch it occurs on.
**
** FILE is the name of a file to delivered up as a webpage.  FILE is relative
** to the root of the source tree of the repository. The FILE must
** be a part of CHECKIN, except when CHECKIN=="ckout" when FILE is read
** directly from disk and need not be a managed file.  For /uv, FILE
** can also be the hash of the unversioned file.
**
** The "ckout" CHECKIN is intended for development - to provide a mechanism
** for looking at what a file will look like using the /doc webpage after
** it gets checked in.  Some commands like "fossil ui", "fossil server",
** and "fossil http" accept an argument "--ckout-alias NAME" when allows
** NAME to be understood as an alias for "ckout".  On a site with many
** embedded hyperlinks to /doc/trunk/... one can run with "--ckout-alias trunk"
** to simulate what the pending changes will look like after they are
** checked in.  The NAME alias is stored in g.zCkoutAlias.
**
** The file extension is used to decide how to render the file.
**
** If PATH matches the patterns *.wiki or *.txt then formatting content
** is added before returning the file.  For all other names, the content
** If FILE ends in "/" then the names "FILE/index.html", "FILE/index.wiki",
** and "FILE/index.md" are tried in that order.  If the binary was compiled
** with TH1 embedded documentation support and the "th1-docs" setting is
** enabled, the name "FILE/index.th1" is also tried.  If none of those are
** found, then FILE is completely replaced by "404.md" and tried.  If that
** is not found, then a default 404 screen is generated.
**
** If the file's mimetype is "text/x-fossil-wiki" or "text/x-markdown"
** is returned straight without any interpretation or processing.
** then headers and footers are added. If the document has mimetype
** text/html then headers and footers are usually not added.  However,
** if a "text/html" document begins with the following div:
**
**       <div class='fossil-doc' data-title='TEXT'>
**
** then headers and footers are supplied.  The optional data-title field
** specifies the title of the document in that case.
**
** For fossil-doc documents and for markdown documents, text of the
** form:  "href='$ROOT/" or "action='$ROOT" has the $ROOT name expanded
** to the top-level of the repository.
*/
void doc_page(void){
  const char *zName;                /* Argument to the /doc page */
  const char *zName = 0;            /* Argument to the /doc page */
  const char *zOrigName = "?";      /* Original document name */
  const char *zMime;                /* Document MIME type */
  char *zCheckin = "tip";           /* The check-in holding the document */
  char *zPathSuffix = "";           /* Text to append to g.zPath */
  int vid = 0;                      /* Artifact of baseline */
  int vid = 0;                      /* Artifact of check-in */
  int rid = 0;                      /* Artifact of file */
  int i;                            /* Loop counter */
  Blob filebody;                    /* Content of the documentation file */
  char zBaseline[UUID_SIZE+1];      /* Baseline UUID */
  Blob title;                       /* Document title */
  int nMiss = (-1);                 /* Failed attempts to find the document */
  int isUV = g.zPath[0]=='u';       /* True for /uv.  False for /doc */
  const char *zDfltTitle;
  static const char *const azSuffix[] = {
     "index.html", "index.wiki", "index.md"
#ifdef FOSSIL_ENABLE_TH1_DOCS
      , "index.th1"
#endif
  };

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  zName = PD("name", "tip/index.wiki");
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_set_current_feature("doc");
  blob_init(&title, 0, 0);
  zDfltTitle = isUV ? "" : "Documentation";
  db_begin_transaction();
  while( rid==0 && (++nMiss)<=count(azSuffix) ){
    zName = P("name");
  for(i=0; zName[i] && zName[i]!='/'; i++){}
  if( zName[i]==0 || i>UUID_SIZE ){
    if( isUV ){
    goto doc_not_found;
  }
  memcpy(zBaseline, zName, i);
  zBaseline[i] = 0;
  zName += i;
  while( zName[0]=='/' ){ zName++; }
  if( !file_is_simple_pathname(zName) ){
      if( zName==0 ) zName = "index.wiki";
      i = 0;
    }else{
      if( zName==0 || zName[0]==0 ) zName = "tip/index.wiki";
      for(i=0; zName[i] && zName[i]!='/'; i++){}
      zCheckin = mprintf("%.*s", i, zName);
    goto doc_not_found;
  }
  if( strcmp(zBaseline,"ckout")==0 && db_open_local()==0 ){
      if( fossil_strcmp(zCheckin,"ckout")==0 && g.localOpen==0 ){
    strcpy(zBaseline,"tip");
  }
  if( strcmp(zBaseline,"ckout")==0 ){
    /* Read from the local checkout */
    char *zFullpath;
    db_must_be_within_tree();
    zFullpath = mprintf("%s/%s", g.zLocalRoot, zName);
    if( !file_isfile(zFullpath) ){
      goto doc_not_found;
    }
    if( blob_read_from_file(&filebody, zFullpath)<0 ){
      goto doc_not_found;
        zCheckin = "tip";
    }
  }else{
    db_begin_transaction();
    if( strcmp(zBaseline,"tip")==0 ){
      vid = db_int(0, "SELECT objid FROM event WHERE type='ci'"
                      " ORDER BY mtime DESC LIMIT 1");
      }else if( fossil_strcmp(zCheckin,"latest")==0 ){
        char *zNewCkin = db_text(0,
          "SELECT uuid FROM blob, mlink, event, filename"
          " WHERE filename.name=%Q"
          "   AND mlink.fnid=filename.fnid"
          "   AND blob.rid=mlink.mid"
          "   AND event.objid=mlink.mid"
          " ORDER BY event.mtime DESC LIMIT 1",
    }else{
      vid = name_to_rid(zBaseline);
    }

          zName + i + 1);
        if( zNewCkin ) zCheckin = zNewCkin;
      }
    }
    /* Create the baseline cache if it does not already exist */
    db_multi_exec(
      "CREATE TABLE IF NOT EXISTS vcache(\n"
    if( nMiss==count(azSuffix) ){
      "  vid INTEGER,         -- baseline ID\n"
      "  fname TEXT,          -- filename\n"
      "  rid INTEGER,         -- artifact ID\n"
      "  UNIQUE(vid,fname,rid)\n"
      ")"
      zName = "404.md";
      zDfltTitle = "Not Found";
    }else if( zName[i]==0 ){
      assert( nMiss>=0 && nMiss<count(azSuffix) );
      zName = azSuffix[nMiss];
    }else if( !isUV ){
    );

      zName += i;
    }
    /* Check to see if the documentation file artifact ID is contained
    ** in the baseline cache */
    while( zName[0]=='/' ){ zName++; }
    if( isUV ){
      zPathSuffix = fossil_strdup(zName);
    }else{
    rid = db_int(0, "SELECT rid FROM vcache"
                    " WHERE vid=%d AND fname=%Q", vid, zName);
      zPathSuffix = mprintf("%s/%s", zCheckin, zName);
    if( rid==0 && db_exists("SELECT 1 FROM vcache WHERE vid=%d", vid) ){
      goto doc_not_found;
    }

    if( rid==0 ){
      Stmt s;
      Blob baseline;
      Manifest m;

      /* Add the vid baseline to the cache */
    if( nMiss==0 ) zOrigName = zName;
    if( !file_is_simple_pathname(zName, 1) ){
      if( sqlite3_strglob("*/", zName)==0 ){
        assert( nMiss>=0 && nMiss<count(azSuffix) );
        zName = mprintf("%s%s", zName, azSuffix[nMiss]);
        if( !file_is_simple_pathname(zName, 1) ){
          goto doc_not_found;
      if( db_int(0, "SELECT count(*) FROM vcache")>10000 ){
        db_multi_exec("DELETE FROM vcache");
      }
      if( content_get(vid, &baseline)==0 ){
        }
      }else{
        goto doc_not_found;
      }
      if( manifest_parse(&m, &baseline)==0 || m.type!=CFTYPE_MANIFEST ){
        goto doc_not_found;
      }
      db_prepare(&s,
    }
    if( isUV ){
      if( db_table_exists("repository","unversioned") ){
        rid = unversioned_content(zName, &filebody);
        if( rid==1 ){
          Stmt q;
          db_prepare(&q, "SELECT hash, mtime FROM unversioned"
        "INSERT INTO vcache(vid,fname,rid)"
        " SELECT %d, :fname, rid FROM blob"
        "  WHERE uuid=:uuid",
                         " WHERE name=%Q", zName);
        vid
      );
      for(i=0; i<m.nFile; i++){
        db_bind_text(&s, ":fname", m.aFile[i].zName);
        db_bind_text(&s, ":uuid", m.aFile[i].zUuid);
        db_step(&s);
        db_reset(&s);
      }
          if( db_step(&q)==SQLITE_ROW ){
            etag_check(ETAG_HASH, db_column_text(&q,0));
            etag_last_modified(db_column_int64(&q,1));
          }
          db_finalize(&q);
        }else if( rid==2 ){
          zName = db_text(zName,
             "SELECT name FROM unversioned WHERE hash=%Q", zName);
          g.isConst = 1;
        }
      db_finalize(&s);
      manifest_clear(&m);

      /* Try again to find the file */
      rid = db_int(0, "SELECT rid FROM vcache"
        zDfltTitle = zName;
      }
    }else if( fossil_strcmp(zCheckin,"ckout")==0
           || fossil_strcmp(zCheckin,g.zCkoutAlias)==0
    ){
      /* Read from the local check-out */
      char *zFullpath;
      db_must_be_within_tree();
      zFullpath = mprintf("%s/%s", g.zLocalRoot, zName);
      if( file_isfile(zFullpath, RepoFILE)
       && blob_read_from_file(&filebody, zFullpath, RepoFILE)>0 ){
        rid = 1;  /* Fake RID just to get the loop to end */
                      " WHERE vid=%d AND fname=%Q", vid, zName);
    }
    if( rid==0 ){
      goto doc_not_found;
      }
      fossil_free(zFullpath);
    }else{
      vid = symbolic_name_to_rid(zCheckin, "ci");
      rid = vid>0 ? doc_load_content(vid, zName, &filebody) : 0;
    }

  }
    /* Get the file content */
    if( content_get(rid, &filebody)==0 ){
      goto doc_not_found;
    }
  g.zPath = mprintf("%s/%s", g.zPath, zPathSuffix);
  if( rid==0 ) goto doc_not_found;
  blob_to_utf8_no_bom(&filebody, 0);

    db_end_transaction(0);
  }

  /* The file is now contained in the filebody blob.  Deliver the
  ** file to the user 
  ** file to the user
  */
  zMime = P("mimetype");
  zMime = nMiss==0 ? P("mimetype") : 0;
  if( zMime==0 ){
    zMime = mimetype_from_name(zName);
  }
  if( strcmp(zMime, "application/x-fossil-wiki")==0 ){
  Th_Store("doc_name", zName);
    Blob title, tail;
    if( wiki_find_title(&filebody, &title, &tail) ){
      style_header(blob_str(&title));
      wiki_convert(&tail, 0, 0);
    }else{
  if( vid ){
    Th_Store("doc_version", db_text(0, "SELECT '[' || substr(uuid,1,10) || ']'"
                                       "  FROM blob WHERE rid=%d", vid));
    Th_Store("doc_date", db_text(0, "SELECT datetime(mtime) FROM event"
                                    " WHERE objid=%d AND type='ci'", vid));
      style_header("Documentation");
      wiki_convert(&filebody, 0, 0);
    }
    style_footer();
  }
  cgi_check_for_malice();
  }else if( strcmp(zMime, "text/plain")==0 ){
    style_header("Documentation");
    @ <blockquote><pre>
    @ %h(blob_str(&filebody))
  document_render(&filebody, zMime, zDfltTitle, zName);
    @ </pre></blockquote>
    style_footer();
  }else{
    cgi_set_content_type(zMime);
    cgi_set_content(&filebody);
  if( nMiss>=count(azSuffix) ) cgi_set_status(404, "Not Found");
  }
  db_end_transaction(0);
  return;

doc_not_found:
  /* Jump here when unable to locate the document */
doc_not_found:
  db_end_transaction(0);
  if( isUV && P("name")==0 ){
    uvlist_page();
    return;
  }
  cgi_set_status(404, "Not Found");
  style_header("Document Not Found");
  @ <p>No such document: %h(PD("name","tip/index.wiki"))</p>
  style_footer();
  return;  
  style_header("Not Found");
  @ <p>Document %h(zOrigName) not found
  if( fossil_strcmp(zCheckin,"ckout")!=0 ){
    @ in %z(href("%R/tree?ci=%T",zCheckin))%h(zCheckin)</a>
  }
  style_finish_page();
  return;
}

/*
** The default logo.
*/
static const unsigned char aLogo[] = {
    71,  73,  70,  56,  55,  97,  62,   0,  71,   0, 244,   0,   0,  85, 
   129, 149,  95, 136, 155,  99, 139, 157, 106, 144, 162, 113, 150, 166, 
   116, 152, 168, 127, 160, 175, 138, 168, 182, 148, 176, 188, 159, 184, 
   195, 170, 192, 202, 180, 199, 208, 184, 202, 210, 191, 207, 215, 201, 
   215, 221, 212, 223, 228, 223, 231, 235, 226, 227, 226, 226, 234, 237, 
   233, 239, 241, 240, 244, 246, 244, 247, 248, 255, 255, 255,   0,   0, 
     0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0, 
     0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,  44,   0,   0, 
     0,   0,  62,   0,  71,   0,   0,   5, 255,  96, 100, 141, 100, 105, 
   158, 168,  37,  41, 132, 192, 164, 112,  44, 207, 102,  99,   0,  56, 
    16,  84, 116, 239, 199, 141,  65, 110, 232, 248,  25, 141, 193, 161, 
    82, 113, 108, 202,  32,  55, 229, 210,  73,  61,  41, 164,  88, 102, 
   181,  10,  41,  96, 179,  91, 106,  35, 240,   5, 135, 143, 137, 242, 
    87, 123, 246,  33, 190,  81, 108, 163, 237, 198,  14,  30, 113, 233, 
   131,  78, 115,  72,  11, 115,  87, 101,  19, 124,  51,  66,  74,   8, 
    19,  16,  67, 100,  74, 133,  50,  15, 101, 135,  56,  11,  74,   6, 
   143,  49, 126, 106,  56,   8, 145,  67,   9, 152,  48, 139, 155,   5, 
    22,  13,  74, 115, 161,  41, 147, 101,  13, 130,  57, 132, 170,  40, 
   167, 155,   0,  94,  57,   3, 178,  48, 183, 181,  57, 160, 186,  40, 
    19, 141, 189,   0,  69, 192,  40,  16, 195, 155, 185, 199,  41, 201, 
   189, 191, 205, 193, 188, 131, 210,  49, 175,  88, 209, 214,  38,  19, 
     3,  11,  19, 111, 127,  60, 219,  39,  55, 204,  19,  11,   6, 100, 
     5,  10, 227, 228,  37, 163,   0, 239, 117,  56, 238, 243,  49, 195, 
   177, 247,  48, 158,  56, 251,  50, 216, 254, 197,  56, 128, 107, 158, 
     2, 125, 171, 114,  92, 218, 246,  96,  66,   3,   4,  50, 134, 176, 
   145,   6,  97,  64, 144,  24,  19, 136, 108,  91, 177, 160,   0, 194, 
    19, 253,   0, 216, 107, 214, 224, 192, 129,   5,  16,  83, 255, 244, 
    43, 213, 195,  24, 159,  27, 169,  64, 230,  88, 208, 227, 129, 182, 
    54,   4,  89, 158,  24, 181, 163, 199,   1, 155,  52, 233,   8, 130, 
   176,  83,  24, 128, 137,  50,  18,  32,  48,  48, 114,  11, 173, 137, 
    19, 110,   4,  64, 105,   1, 194,  30, 140,  68,  15,  24,  24, 224, 
    50,  76,  70,   0,  11, 171,  54,  26, 160, 181, 194, 149, 148,  40, 
   174, 148, 122,  64, 180, 208, 161,  17, 207, 112, 164,   1, 128,  96, 
   148,  78,  18,  21, 194,  33, 229,  51, 247,  65, 133,  97,   5, 250, 
    69, 229, 100,  34, 220, 128, 166, 116, 190,  62,   8, 167, 195, 170, 
    47, 163,   0, 130,  90, 152,  11, 160, 173, 170,  27, 154,  26,  91, 
   232, 151, 171,  18,  14, 162, 253,  98, 170,  18,  70, 171,  64, 219, 
    10,  67, 136, 134, 187, 116,  75, 180,  46, 179, 174, 135,   4, 189, 
   229, 231,  78,  40,  10,  62, 226, 164, 172,  64, 240, 167, 170,  10, 
    18, 124, 188,  10, 107,  65, 193,  94,  11,  93, 171,  28, 248,  17, 
   239,  46, 140,  78,  97,  34,  25, 153,  36,  99,  65, 130,   7, 203, 
   183, 168,  51,  34, 136,  25, 140,  10,   6,  16,  28, 255, 145, 241, 
   230, 140,  10,  66, 178, 167, 112,  48, 192, 128, 129,   9,  31, 141, 
    84, 138,  63, 163, 162,   2, 203, 206, 240,  56,  55,  98, 192, 188, 
    15, 185,  50, 160,   6,   0, 125,  62,  33, 214, 195,  33,   5,  24, 
   184,  25, 231,  14, 201, 245, 144,  23, 126, 104, 228,   0, 145,   2, 
    13, 140, 244, 212,  17,  21,  20, 176, 159,  17,  95, 225, 160, 128, 
    16,   1,  32, 224, 142,  32, 227, 125,  87,  64,   0,  16,  54, 129, 
   205,   2, 141,  76,  53, 130, 103,  37, 166,  64, 144, 107,  78, 196, 
     5, 192,   0,  54,  50, 229,   9, 141,  49,  84, 194,  35,  12, 196, 
   153,  48, 192, 137,  57,  84,  24,   7,  87, 159, 249, 240, 215, 143, 
   105, 241, 118, 149,   9, 139,   4,  64, 203, 141,  35, 140, 129, 131, 
    16, 222, 125, 231, 128,   2, 238,  17, 152,  66,   3,   5,  56, 224, 
   159, 103,  16,  76,  25,  75,   5,  11, 164, 215,  96,   9,  14,  16, 
    36, 225,  15,  11,  40, 144, 192, 156,  41,  10, 178, 199,   3,  66, 
    64,  80, 193,   3, 124,  90,  48, 129, 129, 102, 177,  18, 192, 154, 
    49,  84, 240, 208,  92,  22, 149,  96,  39,   9,  31,  74,  17,  94, 
     3,   8, 177, 199,  72,  59,  85,  76,  25, 216,   8, 139, 194, 197, 
   138, 163,  69,  96, 115,   0, 147,  72,  72,  84,  28,  14,  79,  86, 
   233, 230,  23, 113,  26, 160, 128,   3,  10,  58, 129, 103,  14, 159, 
   214, 163, 146, 117, 238, 213, 154, 128, 151, 109,  84,  64, 217,  13, 
    27,  10, 228,  39,   2, 235, 164, 168,  74,   8,   0,  59, 
    71,  73,  70,  56,  55,  97,  62,   0,  71,   0, 244,   0,   0,  85,
   129, 149,  95, 136, 155,  99, 139, 157, 106, 144, 162, 113, 150, 166,
   116, 152, 168, 127, 160, 175, 138, 168, 182, 148, 176, 188, 159, 184,
   195, 170, 192, 202, 180, 199, 208, 184, 202, 210, 191, 207, 215, 201,
   215, 221, 212, 223, 228, 223, 231, 235, 226, 227, 226, 226, 234, 237,
   233, 239, 241, 240, 244, 246, 244, 247, 248, 255, 255, 255,   0,   0,
     0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,
     0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,  44,   0,   0,
     0,   0,  62,   0,  71,   0,   0,   5, 255,  96, 100, 141, 100, 105,
   158, 168,  37,  41, 132, 192, 164, 112,  44, 207, 102,  99,   0,  56,
    16,  84, 116, 239, 199, 141,  65, 110, 232, 248,  25, 141, 193, 161,
    82, 113, 108, 202,  32,  55, 229, 210,  73,  61,  41, 164,  88, 102,
   181,  10,  41,  96, 179,  91, 106,  35, 240,   5, 135, 143, 137, 242,
    87, 123, 246,  33, 190,  81, 108, 163, 237, 198,  14,  30, 113, 233,
   131,  78, 115,  72,  11, 115,  87, 101,  19, 124,  51,  66,  74,   8,
    19,  16,  67, 100,  74, 133,  50,  15, 101, 135,  56,  11,  74,   6,
   143,  49, 126, 106,  56,   8, 145,  67,   9, 152,  48, 139, 155,   5,
    22,  13,  74, 115, 161,  41, 147, 101,  13, 130,  57, 132, 170,  40,
   167, 155,   0,  94,  57,   3, 178,  48, 183, 181,  57, 160, 186,  40,
    19, 141, 189,   0,  69, 192,  40,  16, 195, 155, 185, 199,  41, 201,
   189, 191, 205, 193, 188, 131, 210,  49, 175,  88, 209, 214,  38,  19,
     3,  11,  19, 111, 127,  60, 219,  39,  55, 204,  19,  11,   6, 100,
     5,  10, 227, 228,  37, 163,   0, 239, 117,  56, 238, 243,  49, 195,
   177, 247,  48, 158,  56, 251,  50, 216, 254, 197,  56, 128, 107, 158,
     2, 125, 171, 114,  92, 218, 246,  96,  66,   3,   4,  50, 134, 176,
   145,   6,  97,  64, 144,  24,  19, 136, 108,  91, 177, 160,   0, 194,
    19, 253,   0, 216, 107, 214, 224, 192, 129,   5,  16,  83, 255, 244,
    43, 213, 195,  24, 159,  27, 169,  64, 230,  88, 208, 227, 129, 182,
    54,   4,  89, 158,  24, 181, 163, 199,   1, 155,  52, 233,   8, 130,
   176,  83,  24, 128, 137,  50,  18,  32,  48,  48, 114,  11, 173, 137,
    19, 110,   4,  64, 105,   1, 194,  30, 140,  68,  15,  24,  24, 224,
    50,  76,  70,   0,  11, 171,  54,  26, 160, 181, 194, 149, 148,  40,
   174, 148, 122,  64, 180, 208, 161,  17, 207, 112, 164,   1, 128,  96,
   148,  78,  18,  21, 194,  33, 229,  51, 247,  65, 133,  97,   5, 250,
    69, 229, 100,  34, 220, 128, 166, 116, 190,  62,   8, 167, 195, 170,
    47, 163,   0, 130,  90, 152,  11, 160, 173, 170,  27, 154,  26,  91,
   232, 151, 171,  18,  14, 162, 253,  98, 170,  18,  70, 171,  64, 219,
    10,  67, 136, 134, 187, 116,  75, 180,  46, 179, 174, 135,   4, 189,
   229, 231,  78,  40,  10,  62, 226, 164, 172,  64, 240, 167, 170,  10,
    18, 124, 188,  10, 107,  65, 193,  94,  11,  93, 171,  28, 248,  17,
   239,  46, 140,  78,  97,  34,  25, 153,  36,  99,  65, 130,   7, 203,
   183, 168,  51,  34, 136,  25, 140,  10,   6,  16,  28, 255, 145, 241,
   230, 140,  10,  66, 178, 167, 112,  48, 192, 128, 129,   9,  31, 141,
    84, 138,  63, 163, 162,   2, 203, 206, 240,  56,  55,  98, 192, 188,
    15, 185,  50, 160,   6,   0, 125,  62,  33, 214, 195,  33,   5,  24,
   184,  25, 231,  14, 201, 245, 144,  23, 126, 104, 228,   0, 145,   2,
    13, 140, 244, 212,  17,  21,  20, 176, 159,  17,  95, 225, 160, 128,
    16,   1,  32, 224, 142,  32, 227, 125,  87,  64,   0,  16,  54, 129,
   205,   2, 141,  76,  53, 130, 103,  37, 166,  64, 144, 107,  78, 196,
     5, 192,   0,  54,  50, 229,   9, 141,  49,  84, 194,  35,  12, 196,
   153,  48, 192, 137,  57,  84,  24,   7,  87, 159, 249, 240, 215, 143,
   105, 241, 118, 149,   9, 139,   4,  64, 203, 141,  35, 140, 129, 131,
    16, 222, 125, 231, 128,   2, 238,  17, 152,  66,   3,   5,  56, 224,
   159, 103,  16,  76,  25,  75,   5,  11, 164, 215,  96,   9,  14,  16,
    36, 225,  15,  11,  40, 144, 192, 156,  41,  10, 178, 199,   3,  66,
    64,  80, 193,   3, 124,  90,  48, 129, 129, 102, 177,  18, 192, 154,
    49,  84, 240, 208,  92,  22, 149,  96,  39,   9,  31,  74,  17,  94,
     3,   8, 177, 199,  72,  59,  85,  76,  25, 216,   8, 139, 194, 197,
   138, 163,  69,  96, 115,   0, 147,  72,  72,  84,  28,  14,  79,  86,
   233, 230,  23, 113,  26, 160, 128,   3,  10,  58, 129, 103,  14, 159,
   214, 163, 146, 117, 238, 213, 154, 128, 151, 109,  84,  64, 217,  13,
    27,  10, 228,  39,   2, 235, 164, 168,  74,   8,   0,  59,
};

/*
** WEBPAGE: logo
**
** Return the logo image.  This image is available to anybody who can see
** the login page.  It is designed for use in the upper left-hand corner
** of the header.
*/
void logo_page(void){
  Blob logo;
  char *zMime;

  etag_check(ETAG_CONFIG, 0);
  zMime = db_get("logo-mimetype", "image/gif");
  blob_zero(&logo);
  db_blob(&logo, "SELECT value FROM config WHERE name='logo-image'");
  if( blob_size(&logo)==0 ){
    blob_init(&logo, (char*)aLogo, sizeof(aLogo));
  }
  cgi_set_content_type(zMime);
  cgi_set_content(&logo);
}
  g.isConst = 1;
}

/*
** The default background image:  a 16x16 white GIF
*/
static const unsigned char aBackground[] = {
    71,  73,  70,  56,  57,  97,  16,   0,  16,   0,
   240,   0,   0, 255, 255, 255,   0,   0,   0,  33,
   254,   4, 119, 105, 115, 104,   0,  44,   0,   0,
     0,   0,  16,   0,  16,   0,   0,   2,  14, 132,
   143, 169, 203, 237,  15, 163, 156, 180, 218, 139,
   179,  62,   5,   0,  59,
};


/*
** WEBPAGE: background
**
** Return the background image.  If no background image is defined, a
** built-in 16x16 pixel white GIF is returned.
*/
void background_page(void){
  Blob bgimg;
  char *zMime;

  etag_check(ETAG_CONFIG, 0);
  zMime = db_get("background-mimetype", "image/gif");
  blob_zero(&bgimg);
  db_blob(&bgimg, "SELECT value FROM config WHERE name='background-image'");
  if( blob_size(&bgimg)==0 ){
    blob_init(&bgimg, (char*)aBackground, sizeof(aBackground));
  }
  cgi_set_content_type(zMime);
  cgi_set_content(&bgimg);
}


/*
** WEBPAGE: favicon.ico
**
** Return the configured "favicon.ico" image.  If no "favicon.ico" image
** is defined, the returned image is for the Fossil lizard icon.
**
** The intended use case here is to supply an icon for the "fossil ui"
** command.  For a permanent website, the recommended process is for
** the admin to set up a project-specific icon and reference that icon
** in the HTML header using a line like:
**
**   <link rel="icon" href="URL-FOR-YOUR-ICON" type="MIMETYPE"/>
**
*/
void favicon_page(void){
  Blob icon;
  char *zMime;

  etag_check(ETAG_CONFIG, 0);
  zMime = db_get("icon-mimetype", "image/gif");
  blob_zero(&icon);
  db_blob(&icon, "SELECT value FROM config WHERE name='icon-image'");
  if( blob_size(&icon)==0 ){
    blob_init(&icon, (char*)aLogo, sizeof(aLogo));
  }
  cgi_set_content_type(zMime);
  cgi_set_content(&icon);
}

/*
** WEBPAGE: docsrch
**
** Search for documents that match a user-supplied full-text search pattern.
** If no pattern is specified (by the s= query parameter) then the user
** is prompted to enter a search string.
**
** Query parameters:
**
**     s=PATTERN             Search for PATTERN
*/
void doc_search_page(void){
  const int isSearch = P("s")!=0;
  login_check_credentials();
  style_header("Document Search%s", isSearch ? " Results" : "");
  cgi_check_for_malice();
  search_screen(SRCH_DOC, 0);
  style_finish_page();
}
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#include "encode.h"

/*
** Make the given string safe for HTML by converting every "<" into "&lt;",
** every ">" into "&gt;" and every "&" into "&amp;".  Return a pointer
** to a new string obtained from malloc().
**
** We also encode " as &quot; so that it can appear as an argument
** We also encode " as &quot; and ' as &#39; so they can appear as an argument
** to markup.
*/
char *htmlize(const char *zIn, int n){
  int c;
char *htmlize(const char *z, int n){
  unsigned char c;
  int i = 0;
  int count = 0;
  char *zOut;
  unsigned char *zOut;
  const unsigned char *zIn = (const unsigned char*)z;

  if( n<0 ) n = strlen(zIn);
  while( i<n && (c = zIn[i])!=0 ){
    switch( c ){
      case '<':   count += 4;       break;
      case '>':   count += 4;       break;
      case '&':   count += 5;       break;
      case '"':   count += 6;       break;
      default:    count++;          break;
  if( n<0 ) n = strlen(z);
  while( i<n ){
    switch( zIn[i] ){
      case '<':   count += 3;       break;
      case '>':   count += 3;       break;
      case '&':   count += 4;       break;
      case '"':   count += 5;       break;
      case '\'':  count += 4;       break;
      case 0:     n = i;            break;
    }
    i++;
  }
  i = 0;
  zOut = malloc( count+1 );
  if( zOut==0 ) return 0;
  while( n-->0 && (c = *zIn)!=0 ){
  zOut = fossil_malloc( count+n+1 );
  if( count==0 ){
    memcpy(zOut, zIn, n);
    zOut[n] = 0;
    return (char*)zOut;
  }
  while( n-->0 ){
    c = *(zIn++);
    switch( c ){
      case '<':   
      case '<':
        zOut[i++] = '&';
        zOut[i++] = 'l';
        zOut[i++] = 't';
        zOut[i++] = ';';
        break;
      case '>':   
      case '>':
        zOut[i++] = '&';
        zOut[i++] = 'g';
        zOut[i++] = 't';
        zOut[i++] = ';';
        break;
      case '&':   
      case '&':
        zOut[i++] = '&';
        zOut[i++] = 'a';
        zOut[i++] = 'm';
        zOut[i++] = 'p';
        zOut[i++] = ';';
        break;
      case '"':   
      case '"':
        zOut[i++] = '&';
        zOut[i++] = 'q';
        zOut[i++] = 'u';
        zOut[i++] = 'o';
        zOut[i++] = 't';
        zOut[i++] = ';';
        break;
      case '\'':
        zOut[i++] = '&';
        zOut[i++] = '#';
        zOut[i++] = '3';
        zOut[i++] = '9';
        zOut[i++] = ';';
        break;
      default:
        zOut[i++] = c;
        break;
    }
    zIn++;
  }
  zOut[i] = 0;
  return zOut;
  return (char*)zOut;
}

/*
** Append HTML-escaped text to a Blob.
*/
void htmlize_to_blob(Blob *p, const char *zIn, int n){
  int c, i, j;
  if( n<0 ) n = strlen(zIn);
  for(i=j=0; i<n; i++){
    c = zIn[i];
    switch( c ){
      case '<':
        if( j<i ) blob_append(p, zIn+j, i-j);
        blob_append(p, "&lt;", 4);
        j = i+1;
        break;
      case '>':
        if( j<i ) blob_append(p, zIn+j, i-j);
        blob_append(p, "&gt;", 4);
        j = i+1;
        break;
      case '&':
        if( j<i ) blob_append(p, zIn+j, i-j);
        blob_append(p, "&amp;", 5);
        j = i+1;
        break;
      case '"':
        if( j<i ) blob_append(p, zIn+j, i-j);
        blob_append(p, "&quot;", 6);
        j = i+1;
        break;
      case '\'':
        if( j<i ) blob_append(p, zIn+j, i-j);
        blob_append(p, "&#39;", 5);
        j = i+1;
        break;
      case '\r':
        if( j<i ) blob_append(p, zIn+j, i-j);
        blob_append(p, " ", 1);
        j = i+1;
        break;
    }
  }
  if( j<i ) blob_append(p, zIn+j, i-j);
}


/*
** Encode a string for HTTP.  This means converting lots of
** characters into the "%HH" where H is a hex digit.  It also
** means converting spaces to "+".
**
** This is the opposite of DeHttpizeString below.
*/
static char *EncodeHttp(const char *zIn, int n, int encodeSlash){
  int c;
  int i = 0;
  int count = 0;
  char *zOut;
  int other;
# define IsSafeChar(X)  \
     (isalnum(X) || (X)=='.' || (X)=='$' || (X)=='-' || (X)=='_' || (X)==other)
     (fossil_isalnum(X) || (X)=='.' || (X)=='$' \
      || (X)=='~' || (X)=='-' || (X)=='_' \
      || (!encodeSlash && ((X)=='/' || (X)==':')))

  if( zIn==0 ) return 0;
  if( n<0 ) n = strlen(zIn);
  other = encodeSlash ? 'a' : '/';
  while( i<n && (c = zIn[i])!=0 ){
    if( IsSafeChar(c) || c==' ' ){
      count++;
    }else{
      count += 3;
    }
    i++;
  }
  i = 0;
  zOut = malloc( count+1 );
  zOut = fossil_malloc( count+1 );
  if( zOut==0 ) return 0;
  while( n-->0 && (c = *zIn)!=0 ){
    if( IsSafeChar(c) ){
      zOut[i++] = c;
    }else if( c==' ' ){
      zOut[i++] = '+';
    }else{
      zOut[i++] = '%';
      zOut[i++] = "0123456789ABCDEF"[(c>>4)&0xf];
      zOut[i++] = "0123456789ABCDEF"[c&0xf];
    }
    zIn++;
  }
  zOut[i] = 0;
#undef IsSafeChar
  return zOut;
}

/*
** Convert the input string into a form that is suitable for use as
** a token in the HTTP protocol.  Spaces are encoded as '+' and special
** characters are encoded as "%HH" where HH is a two-digit hexidecimal
** characters are encoded as "%HH" where HH is a two-digit hexadecimal
** representation of the character.  The "/" character is encoded
** as "%2F".
*/
char *httpize(const char *z, int n){
  return EncodeHttp(z, n, 1);
}

/*
** Convert the input string into a form that is suitable for use as
** a token in the HTTP protocol.  Spaces are encoded as '+' and special
** characters are encoded as "%HH" where HH is a two-digit hexidecimal
** representation of the character.  The "/" character is not encoded
** by this routine. 
** by this routine.
*/
char *urlize(const char *z, int n){
  return EncodeHttp(z, n, 0);
}

/*
** If input string does not contain quotes (neither ' nor ")
** then return the argument itself. Otherwise return a newly allocated
** copy of input with all quotes %-escaped.
*/
const char* escape_quotes(const char *zIn){
  char *zRet, *zOut;
  size_t i, n = 0;
  for(i=0; zIn[i]; i++){
    if( zIn[i]== '"' || zIn[i]== '\'' ) n++;
  }
  if( !n ) return zIn;
  zRet = zOut = fossil_malloc( i + 2*n + 1 );
  for(i=0; zIn[i]; i++){
    if( zIn[i]=='"' ){
      *(zOut++) = '%';
      *(zOut++) = '2';
      *(zOut++) = '2';
    }else if( zIn[i]=='\'' ){
      *(zOut++) = '%';
      *(zOut++) = '2';
      *(zOut++) = '7';
    }else{
      *(zOut++) = zIn[i];
    }
  }
  *zOut = 0;
  return zRet;
}

/*
** Convert a single HEX digit to an integer
*/
static int AsciiToHex(int c){
  if( c>='a' && c<='f' ){
    c += 10 - 'a';
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  if( nIn<0 ) nIn = strlen(zIn);
  for(i=n=0; i<nIn; i++){
    c = zIn[i];
    if( c==0 || c==' ' || c=='\n' || c=='\t' || c=='\r' || c=='\f' || c=='\v'
             || c=='\\' ) n++;
  }
  n += nIn;
  zOut = malloc( n+1 );
  zOut = fossil_malloc( n+1 );
  if( zOut ){
    for(i=j=0; i<nIn; i++){
      int c = zIn[i];
      if( c==0 ){
        zOut[j++] = '\\';
        zOut[j++] = '0';
      }else if( c=='\\' ){
        zOut[j++] = '\\';
        zOut[j++] = '\\';
      }else if( isspace(c) ){
      }else if( fossil_isspace(c) ){
        zOut[j++] = '\\';
        switch( c ){
          case '\n':  c = 'n'; break;
          case ' ':   c = 's'; break;
          case '\t':  c = 't'; break;
          case '\r':  c = 'r'; break;
          case '\v':  c = 'v'; break;
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}

/*
** Decode a fossilized string in-place.
*/
void defossilize(char *z){
  int i, j, c;
  for(i=j=0; z[i]; i++){
    c = z[i];
  char *zSlash = strchr(z, '\\');
  if( zSlash==0 ) return;
  i = zSlash - z;
  for(j=i; (c=z[i])!=0; i++){
    if( c=='\\' && z[i+1] ){
      i++;
      switch( z[i] ){
        case 'n':  c = '\n';  break;
        case 's':  c = ' ';   break;
        case 't':  c = '\t';  break;
        case 'r':  c = '\r';  break;
        case 'v':  c = '\v';  break;
        case 'f':  c = '\f';  break;
        case '0':  c = 0;     break;
        case '\\': c = '\\';  break;
        default:   c = z[i];  break;
      }
    }
    z[j++] = c;
  }
  if( z[j] ) z[j] = 0;
}


/*
** The *pz variable points to a UTF8 string.  Read the next character
** off of that string and return its codepoint value.  Advance *pz to the
** next character
*/
u32 fossil_utf8_read(
  const unsigned char **pz    /* Pointer to string from which to read char */
){
  unsigned int c;

  /*
  ** This lookup table is used to help decode the first byte of
  ** a multi-byte UTF8 character.
  */
  static const unsigned char utf8Trans1[] = {
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
    0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x00, 0x00,
  };

  c = *((*pz)++);
  if( c>=0xc0 ){
    c = utf8Trans1[c-0xc0];
    while( (*(*pz) & 0xc0)==0x80 ){
      c = (c<<6) + (0x3f & *((*pz)++));
    }
    if( c<0x80
        || (c&0xFFFFF800)==0xD800
        || (c&0xFFFFFFFE)==0xFFFE ){  c = 0xFFFD; }
  }
  return c;
}

/*
** Encode a UTF8 string as a JSON string literal (with or without the
** surrounding "...", depending on whether the 2nd argument is true or
** false) and return a pointer to the encoding.  Space to hold the
** encoding is obtained from fossil_malloc() and must be freed by the
** caller.
**
** If nOut is not NULL then it is assigned to the length, in bytes, of
** the returned string (its strlen(), not counting the terminating
** NUL).
*/
char *encode_json_string_literal(const char *zStr, int fAddQuotes,
                                 int * nOut){
  const unsigned char *z;
  char *zOut;
  u32 c;
  int n, i, j;
  z = (const unsigned char*)zStr;
  n = 0;
  while( (c = *(z++))!=0 ){
    if( c=='\\' || c=='"' ){
      n += 2;
    }else if( c<' ' ){
      if( c=='\n' || c=='\r' ){
        n += 2;
      }else{
        n += 6;
      }
    }else{
      n++;
    }
  }
  if(fAddQuotes){
    n += 2;
  }
  zOut = fossil_malloc(n+1);
  if( zOut==0 ) return 0;
  z = (const unsigned char*)zStr;
  i = 0;
  if(fAddQuotes){
    zOut[i++] = '"';
  }
  while( (c = *(z++))!=0 ){
    if( c=='\\' || c=='"' ){
      zOut[i++] = '\\';
      zOut[i++] = c;
    }else if( c<' ' ){
      zOut[i++] = '\\';
      if( c=='\n' ){
        zOut[i++] = 'n';
      }else if( c=='\r' ){
        zOut[i++] = 'r';
      }else{
        zOut[i++] = 'u';
        for(j=3; j>=0; j--){
          zOut[i+j] = "0123456789abcdef"[c&0xf];
          c >>= 4;
        }
        i += 4;
      }
    }else{
      zOut[i++] = c;
    }
  }
  if(fAddQuotes){
    zOut[i++] = '"';
  }
  zOut[i] = 0;
  if(nOut!=0){
    *nOut = i;
  }
  return zOut;
}

/*
** The characters used for HTTP base64 encoding.
*/
static unsigned char zBase[] = 
static unsigned char zBase[] =
  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

/*
** Translate nData bytes of content from zData into
** Encode a string using a base-64 encoding.
** ((nData+2)/3)*4) bytes of base64 encoded content and
** The encoding can be reversed using the <b>decode64</b> function.
**
** Space to hold the result comes from malloc().
** put the result in z64.  Add a zero-terminator at the end.
*/
char *encode64(const char *zData, int nData){
int translateBase64(const char *zData, int nData, char *z64){
  char *z64;
  int i, n;

  if( nData<=0 ){
    nData = strlen(zData);
  }
  z64 = malloc( (nData*4)/3 + 8 );
  for(i=n=0; i+2<nData; i+=3){
    z64[n++] = zBase[ (zData[i]>>2) & 0x3f ];
    z64[n++] = zBase[ ((zData[i]<<4) & 0x30) | ((zData[i+1]>>4) & 0x0f) ];
    z64[n++] = zBase[ ((zData[i+1]<<2) & 0x3c) | ((zData[i+2]>>6) & 0x03) ];
    z64[n++] = zBase[ zData[i+2] & 0x3f ];
  }
  if( i+1<nData ){
    z64[n++] = zBase[ (zData[i]>>2) & 0x3f ];
    z64[n++] = zBase[ ((zData[i]<<4) & 0x30) | ((zData[i+1]>>4) & 0x0f) ];
    z64[n++] = zBase[ ((zData[i+1]<<2) & 0x3c) ];
    z64[n++] = '=';
  }else if( i<nData ){
    z64[n++] = zBase[ (zData[i]>>2) & 0x3f ];
    z64[n++] = zBase[ ((zData[i]<<4) & 0x30) ];
    z64[n++] = '=';
    z64[n++] = '=';
  }
  z64[n] = 0;
  return n;
}

/*
** Encode a string using a base-64 encoding.
** The encoding can be reversed using the <b>decode64</b> function.
**
** Space to hold the result comes from malloc().
*/
char *encode64(const char *zData, int nData){
  char *z64;
  if( nData<=0 ){
    nData = strlen(zData);
  }
  z64 = fossil_malloc( (nData*4)/3 + 8 );
  translateBase64(zData, nData, z64);
  return z64;
}

/*
** COMMAND: test-encode64 
** COMMAND: test-encode64
**
** Usage: %fossil test-encode64 STRING
*/
void test_encode64_cmd(void){
  char *z;
  int i;
  for(i=2; i<g.argc; i++){
    z = encode64(g.argv[i], -1);
    printf("%s\n", z);
    fossil_print("%s\n", z);
    free(z);
  }
}


/* Decode base64 text.  Write the output into zData.  The caller
** must ensure that zData is large enough.  It is ok for z64 and
** zData to be the same buffer.  In other words, it is ok to decode
** in-place.  A zero terminator is always placed at the end of zData.
*/
void decodeBase64(const char *z64, int *pnByte, char *zData){
  const unsigned char *zIn = (const unsigned char*)z64;
  int i, j, k;
  int x[4];
  static int isInit = 0;
  static signed char trans[256];

  if( !isInit ){
    for(i=0; i<256; i++){ trans[i] = -1; }
    for(i=0; zBase[i]; i++){ trans[zBase[i] & 0x7f] = i; }
    isInit = 1;
  }
  for(j=k=0; zIn[0]; zIn++){
    int v = trans[zIn[0]];
    if( v>=0 ){
      x[k++] = v;
      if( k==4 ){
        zData[j++] = ((x[0]<<2) & 0xfc) | ((x[1]>>4) & 0x03);
        zData[j++] = ((x[1]<<4) & 0xf0) | ((x[2]>>2) & 0x0f);
        zData[j++] = ((x[2]<<6) & 0xc0) | (x[3] & 0x3f);
        k = 0;
      }
    }
  }
  if( k>=2 ){
    zData[j++] = ((x[0]<<2) & 0xfc) | ((x[1]>>4) & 0x03);
    if( k==3 ){
      zData[j++] = ((x[1]<<4) & 0xf0) | ((x[2]>>2) & 0x0f);
    }
  }
  zData[j] = 0;
  *pnByte = j;
}


/*
** This function treats its input as a base-64 string and returns the
** decoded value of that string.  Characters of input that are not
** valid base-64 characters (such as spaces and newlines) are ignored.
**
** Space to hold the decoded string is obtained from malloc().
**
** The number of bytes decoded is returned in *pnByte
*/
char *decode64(const char *z64, int *pnByte){
  char *zData;
  int n64;
  int n64 = (int)strlen(z64);
  int i, j;
  int a, b, c, d;
  static int isInit = 0;
  static int trans[128];

  if( !isInit ){
    for(i=0; i<128; i++){ trans[i] = 0; }
    for(i=0; zBase[i]; i++){ trans[zBase[i] & 0x7f] = i; }
    isInit = 1;
  }
  n64 = strlen(z64);
  while( n64>0 && z64[n64-1]=='=' ) n64--;
  zData = malloc( (n64*3)/4 + 4 );
  zData = fossil_malloc( (n64*3)/4 + 4 );
  for(i=j=0; i+3<n64; i+=4){
    a = trans[z64[i] & 0x7f];
    b = trans[z64[i+1] & 0x7f];
    c = trans[z64[i+2] & 0x7f];
    d = trans[z64[i+3] & 0x7f];
    zData[j++] = ((a<<2) & 0xfc) | ((b>>4) & 0x03);
    zData[j++] = ((b<<4) & 0xf0) | ((c>>2) & 0x0f);
    zData[j++] = ((c<<6) & 0xc0) | (d & 0x3f);
  }
  if( i+2<n64 ){
    a = trans[z64[i] & 0x7f];
    b = trans[z64[i+1] & 0x7f];
    c = trans[z64[i+2] & 0x7f];
    zData[j++] = ((a<<2) & 0xfc) | ((b>>4) & 0x03);
    zData[j++] = ((b<<4) & 0xf0) | ((c>>2) & 0x0f);
  }else if( i+1<n64 ){
    a = trans[z64[i] & 0x7f];
    b = trans[z64[i+1] & 0x7f];
    zData[j++] = ((a<<2) & 0xfc) | ((b>>4) & 0x03);
  }
  zData[j] = 0;
  *pnByte = j;
  decodeBase64(z64, pnByte, zData);
  return zData;
}

/*
** COMMAND: test-decode64 
** COMMAND: test-decode64
**
** Usage: %fossil test-decode64 STRING
*/
void test_decode64_cmd(void){
  char *z;
  int i, n;
  for(i=2; i<g.argc; i++){
    z = decode64(g.argv[i], &n);
    printf("%d: %s\n", n, z);
    free(z);
    fossil_print("%d: %s\n", n, z);
    fossil_free(z);
  }
}

/*
** The base-16 encoding using the following characters:
**
**         0123456789abcdef
**
*/

/*
** The array used for encoding
*/                           /* 123456789 12345  */
static const char zEncode[] = "0123456789abcdef"; 
static const char zEncode[] = "0123456789abcdef";

/*
** Encode a N-digit base-256 in base-16.  Return zero on success
** and non-zero if there is an error.
*/
int encode16(const unsigned char *pIn, unsigned char *zOut, int N){
  int i;
  for(i=0; i<N; i++){
    *(zOut++) = zEncode[pIn[i]>>4];
    *(zOut++) = zEncode[pIn[i]&0xf];
  }
  *zOut = 0;
  return 0;
}

/*
** An array for translating single base-16 characters into a value.
** Disallowed input characters have a value of 64.  Upper and lower
** case is the same. 
** case is the same.
*/
static const char zDecode[] = {
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
   0,  1,  2,  3,  4,  5,  6,  7,   8,  9, 64, 64, 64, 64, 64, 64, 
  64, 10, 11, 12, 13, 14, 15, 64,  64,  1, 64, 64,  1, 64, 64,  0,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
   0,  1,  2,  3,  4,  5,  6,  7,   8,  9, 64, 64, 64, 64, 64, 64,
  64, 10, 11, 12, 13, 14, 15, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 10, 11, 12, 13, 14, 15, 64,  64,  1, 64, 64,  1, 64, 64,  0,
  64, 10, 11, 12, 13, 14, 15, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64, 
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
  64, 64, 64, 64, 64, 64, 64, 64,  64, 64, 64, 64, 64, 64, 64, 64,
};

/*
** Decode a N-character base-16 number into base-256.  N must be a 
** Decode a N-character base-16 number into base-256.  N must be a
** multiple of 2.  The output buffer must be at least N/2 characters
** in length
*/
int decode16(const unsigned char *zIn, unsigned char *pOut, int N){
  int i, j;
  if( (N&1)!=0 ) return 1;
  for(i=j=0; i<N; i += 2, j++){
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/*
** Return true if the input string contains only valid base-16 digits.
** If any invalid characters appear in the string, return false.
*/
int validate16(const char *zIn, int nIn){
  int i;
  if( nIn<0 ) nIn = (int)strlen(zIn);
  if( zIn[nIn]==0 ){
    return (int)strspn(zIn,"0123456789abcdefABCDEF")==nIn;
  }
  for(i=0; i<nIn; i++, zIn++){
    if( zDecode[zIn[0]&0xff]>63 ){
      return zIn[0]==0;
    }
  }
  return 1;
}

/*
** The input string is a base16 value.  Convert it into its canonical
** form.  This means that digits are all lower case and that conversions
** like "l"->"1" and "O"->"0" occur.
*/
void canonical16(char *z, int n){
  while( *z && n-- ){
    *z = zEncode[zDecode[(*z)&0x7f]&0x1f];
    z++;
  }
}

/*
** Decode a string encoded using "quoted-printable".
**
**   (1)  "=" followed by two hex digits becomes a single
**        byte specified by the two digits
**
** The decoding is done in-place.
*/
void decodeQuotedPrintable(char *z, int *pnByte){
  int i, j, c;
  for(i=j=0; (c = z[i])!=0; i++){
    if( c=='=' ){
      if( z[i+1]!='\r' ){
        decode16((unsigned char*)&z[i+1], (unsigned char*)&z[j], 2);
        j++;
      }
      i += 2;
    }else{
      z[j++] = c;
    }
  }
  if( pnByte ) *pnByte = j;
  z[j] = 0;
}

/* Randomness used for XOR-ing by the obscure() and unobscure() routines */
static const unsigned char aObscurer[16] = {
    0xa7, 0x21, 0x31, 0xe3, 0x2a, 0x50, 0x2c, 0x86,
    0x4c, 0xa4, 0x52, 0x25, 0xff, 0x49, 0x35, 0x85
};


/*
** Obscure plain text so that it is not easily readable.
**
** This is used for storing sensitive information (such as passwords) in a
** way that prevents their exposure through idle browsing.  This is not
** encryption.  Anybody who really wants the password can still get it.
**
** The text is XOR-ed with a repeating pattern then converted to hex.
** Space to hold the returned string is obtained from malloc and should
** be freed by the caller.
*/
char *obscure(const char *zIn){
  int n, i;
  unsigned char salt;
  char *zOut;

  if( zIn==0 ) return 0;
  n = strlen(zIn);
  zOut = fossil_malloc( n*2+3 );
  sqlite3_randomness(1, &salt);
  zOut[n+1] = (char)salt;
  for(i=0; i<n; i++) zOut[i+n+2] = zIn[i]^aObscurer[i&0x0f]^salt;
  encode16((unsigned char*)&zOut[n+1], (unsigned char*)zOut, n+1);
  return zOut;
}

/*
** Undo the obscuring of text performed by obscure().  Or, if the input is
** not hexadecimal (meaning the input is not the output of obscure()) then
** do the equivalent of strdup().
**
** The result is memory obtained from malloc that should be freed by the caller.
*/
char *unobscure(const char *zIn){
  int n, i;
  unsigned char salt;
  char *zOut;

  if( zIn==0 ) return 0;
  n = strlen(zIn);
  zOut = fossil_malloc( n + 1 );
  if( n<2
    || decode16((unsigned char*)zIn, &salt, 2)
    || decode16((unsigned char*)&zIn[2], (unsigned char*)zOut, n-2)
  ){
    memcpy(zOut, zIn, n+1);
  }else{
    n = n/2 - 1;
    for(i=0; i<n; i++) zOut[i] = zOut[i]^aObscurer[i&0x0f]^salt;
    zOut[n] = 0;
  }
  return zOut;
}

/*
** Command to test obscure() and unobscure().  These commands are also useful
** utilities for decoding passwords found in the database.
**
** COMMAND: test-obscure
**
** For each command-line argument X, run both obscure(X) and
** unobscure(obscure(X)) and print the results.  This is used for testing
** and debugging of the obscure() and unobscure() functions.
*/
void test_obscure_cmd(void){
  int i;
  char *z, *z2;
  for(i=2; i<g.argc; i++){
    z = obscure(g.argv[i]);
    z2 = unobscure(z);
    fossil_print("OBSCURE:    %s -> %s (%s)\n", g.argv[i], z, z2);
    free(z);
    free(z2);
    z = unobscure(g.argv[i]);
    fossil_print("UNOBSCURE:  %s -> %s\n", g.argv[i], z);
    free(z);
  }
}
Added src/etag.c.
























































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file implements ETags: cache control for Fossil
**
** An ETag is a hash that encodes attributes which must be the same for
** the page to continue to be valid.  Attributes that might be contained
** in the ETag include:
**
**   (1)  The mtime on the Fossil executable
**   (2)  The last change to the CONFIG table
**   (3)  The last change to the EVENT table
**   (4)  The value of the display cookie
**   (5)  A hash value supplied by the page generator
**   (6)  The details of the request URI
**   (7)  The name user as determined by the login cookie
**
** Item (1) is always included in the ETag.  The other elements are
** optional.  Because (1) is always included as part of the ETag, all
** outstanding ETags can be invalidated by touching the fossil executable.
**
** A page generator routine invokes etag_check() exactly once, with
** arguments that indicates which of the above elements to include in the
** hash.  If the request contained an If-None-Match header which matches
** the generated ETag, then a 304 Not Modified reply is generated and
** the process exits.  In other words, etag_check() never returns.  But
** if there is no If-None_Match header or if the ETag does not match,
** then etag_check() returns normally.  Later, during reply generation,
** the cgi.c module will invoke etag_tag() to recover the generated tag
** and include it in the reply header.
**
** 2018-02-25:
**
** Also support Last-Modified: and If-Modified-Since:.  The
** etag_last_modified(mtime) API records a timestamp for the page in
** seconds since 1970.  This causes a Last-Modified: header to be
** issued in the reply.  Or, if the request contained If-Modified-Since:
** and the new mtime is not greater than the mtime associated with
** If-Modified-Since, then a 304 Not Modified reply is generated and
** the etag_last_modified() API never returns.
*/
#include "config.h"
#include "etag.h"

#if INTERFACE
/*
** Things to monitor
*/
#define ETAG_CONFIG   0x01 /* Output depends on the CONFIG table */
#define ETAG_DATA     0x02 /* Output depends on the EVENT table */
#define ETAG_COOKIE   0x04 /* Output depends on a display cookie value */
#define ETAG_HASH     0x08 /* Output depends on a hash */
#define ETAG_QUERY    0x10 /* Output depends on PATH_INFO and QUERY_STRING */
                           /*   and the g.zLogin value */
#endif

static char zETag[33];      /* The generated ETag */
static int iMaxAge = 0;     /* The max-age parameter in the reply */
static sqlite3_int64 iEtagMtime = 0;  /* Last-Modified time */
static int etagCancelled = 0;         /* Never send an etag */

/*
** Return a hash that changes every time the Fossil source code is
** rebuilt.
**
** The FOSSIL_BUILD_HASH string that is returned here gets computed by
** the mkversion utility program.  The result is a hash of MANIFEST_UUID
** and the unix timestamp for when the mkversion utility program is run.
**
** During development rebuilds, if you need the source code id to change
** in order to invalidate caches, simply "touch" the "manifest" file in
** the top of the source directory prior to running "make" and a new
** FOSSIL_BUILD_HASH will be generated automatically.
*/
const char *fossil_exe_id(void){
  return FOSSIL_BUILD_HASH;
}

/*
** Generate an ETag
*/
void etag_check(unsigned eFlags, const char *zHash){
  const char *zIfNoneMatch;
  char zBuf[50];
  assert( zETag[0]==0 );  /* Only call this routine once! */

  if( etagCancelled ) return;

  /* By default, ETagged URLs never expire since the ETag will change
   * when the content changes.  Approximate this policy as 10 years. */
  iMaxAge = 10 * 365 * 24 * 60 * 60;
  md5sum_init();

  /* Always include the executable ID as part of the hash */
  md5sum_step_text("exe-id: ", -1);
  md5sum_step_text(fossil_exe_id(), -1);
  md5sum_step_text("\n", 1);

  if( (eFlags & ETAG_HASH)!=0 && zHash ){
    md5sum_step_text("hash: ", -1);
    md5sum_step_text(zHash, -1);
    md5sum_step_text("\n", 1);
    iMaxAge = 0;
  }
  if( eFlags & ETAG_DATA ){
    int iKey = db_int(0, "SELECT max(rcvid) FROM rcvfrom");
    sqlite3_snprintf(sizeof(zBuf),zBuf,"%d",iKey);
    md5sum_step_text("data: ", -1);
    md5sum_step_text(zBuf, -1);
    md5sum_step_text("\n", 1);
    iMaxAge = 60;
  }
  if( eFlags & ETAG_CONFIG ){
    int iKey = db_int(0, "SELECT value FROM config WHERE name='cfgcnt'");
    sqlite3_snprintf(sizeof(zBuf),zBuf,"%d",iKey);
    md5sum_step_text("config: ", -1);
    md5sum_step_text(zBuf, -1);
    md5sum_step_text("\n", 1);
    iMaxAge = 3600;
  }

  /* Include the display cookie */
  if( eFlags & ETAG_COOKIE ){
    md5sum_step_text("display-cookie: ", -1);
    md5sum_step_text(PD(DISPLAY_SETTINGS_COOKIE,""), -1);
    md5sum_step_text("\n", 1);
    iMaxAge = 0;
  }

  /* Output depends on PATH_INFO and QUERY_STRING */
  if( eFlags & ETAG_QUERY ){
    const char *zQS = P("QUERY_STRING");
    md5sum_step_text("query: ", -1);
    md5sum_step_text(PD("PATH_INFO",""), -1);
    if( zQS ){
      md5sum_step_text("?", 1);
      md5sum_step_text(zQS, -1);
    }
    md5sum_step_text("\n",1);
    if( g.zLogin ){
      md5sum_step_text("login: ", -1);
      md5sum_step_text(g.zLogin, -1);
      md5sum_step_text("\n", 1);
    }
  }

  /* Generate the ETag */
  memcpy(zETag, md5sum_finish(0), 33);

  /* Check to see if the generated ETag matches If-None-Match and
  ** generate a 304 reply if it does. */
  zIfNoneMatch = P("HTTP_IF_NONE_MATCH");
  if( zIfNoneMatch==0 ) return;
  if( strcmp(zIfNoneMatch,zETag)!=0 ) return;

  /* If we get this far, it means that the content has
  ** not changed and we can do a 304 reply */
  cgi_reset_content();
  cgi_set_status(304, "Not Modified");
  cgi_reply();
  db_close(0);
  fossil_exit(0);
}

/*
** If the output is determined purely by hash parameter and the hash
** is long enough to be invariant, then set the g.isConst flag, indicating
** that the output will never change.
*/
void etag_check_for_invariant_name(const char *zHash){
  size_t nHash = strlen(zHash);
  if( nHash<HNAME_MIN ){
    return;  /* Name is too short */
  }
  if( !validate16(zHash, (int)nHash) ){
    return;  /* Name is not pure hex */
  }
  g.isConst = 1;  /* A long hex identifier must be a unique hash */
}

/*
** Accept a new Last-Modified time.  This routine should be called by
** page generators that know a valid last-modified time.  This routine
** might generate a 304 Not Modified reply and exit(), never returning.
** Or, if not, it will cause a Last-Modified: header to be included in the
** reply.
*/
void etag_last_modified(sqlite3_int64 mtime){
  const char *zIfModifiedSince;
  sqlite3_int64 x;
  assert( iEtagMtime==0 );   /* Only call this routine once */
  assert( mtime>0 );         /* Only call with a valid mtime */
  iEtagMtime = mtime;

  /* Check to see the If-Modified-Since constraint is satisfied */
  zIfModifiedSince = P("HTTP_IF_MODIFIED_SINCE");
  if( zIfModifiedSince==0 ) return;
  x = cgi_rfc822_parsedate(zIfModifiedSince);
  if( x<mtime ) return;

#if 0
  /* If the Fossil executable is more recent than If-Modified-Since,
  ** go ahead and regenerate the resource. */
  if( file_mtime(g.nameOfExe, ExtFILE)>x ) return;
#endif

  /* If we reach this point, it means that the resource has not changed
  ** and that we should generate a 304 Not Modified reply */
  cgi_reset_content();
  cgi_set_status(304, "Not Modified");
  cgi_reply();
  db_close(0);
  fossil_exit(0);
}

/* Return the ETag, if there is one.
*/
const char *etag_tag(void){
  return g.isConst ? "" : zETag;
}

/* Return the recommended max-age
*/
int etag_maxage(void){
  return iMaxAge;
}

/* Return the last-modified time in seconds since 1970.  Or return 0 if
** there is no last-modified time.
*/
sqlite3_int64 etag_mtime(void){
  return iEtagMtime;
}

/*
** COMMAND: test-etag
**
** Usage:  fossil test-etag -key KEY-NUMBER  -hash HASH
**
** Generate an etag given a KEY-NUMBER and/or a HASH.
**
** KEY-NUMBER is some combination of:
**
**    1   ETAG_CONFIG   The config table version number
**    2   ETAG_DATA     The event table version number
**    4   ETAG_COOKIE   The display cookie
*/
void test_etag_cmd(void){
  const char *zHash = 0;
  const char *zKey;
  int iKey = 0;
  db_find_and_open_repository(0, 0);
  zKey = find_option("key",0,1);
  zHash = find_option("hash",0,1);
  if( zKey ) iKey = atoi(zKey);
  etag_check(iKey, zHash);
  fossil_print("%s\n", etag_tag());
}

/*
** Cancel the ETag.
*/
void etag_cancel(void){
  etagCancelled = 1;
  zETag[0] = 0;
}
Added src/event.c.





































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to do formatting of event messages:
**
**     Technical Notes
**     Milestones
**     Blog posts
**     New articles
**     Process checkpoints
**     Announcements
**
** Do not confuse "event" artifacts with the "event" table in the
** repository database.  An "event" artifact is a technical-note: a
** wiki- or blog-like essay that appears on the timeline.  The "event"
** table records all entries on the timeline, including tech-notes.
**
** (2015-02-14):  Changing the name to "tech-note" most everywhere.
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include "event.h"

/*
** Output a hyperlink to an technote given its tagid.
*/
void hyperlink_to_event_tagid(int tagid){
  char *zId;
  zId = db_text(0, "SELECT substr(tagname, 7) FROM tag WHERE tagid=%d",
                     tagid);
  @ [%z(href("%R/technote/%s",zId))%S(zId)</a>]
  free(zId);
}

/*
** WEBPAGE: technote
** WEBPAGE: event
**
** Display a technical note (formerly called an "event").
**
** PARAMETERS:
**
**  name=ID           Identify the technical note to display. ID must be
**                    complete.
**  aid=ARTIFACTID    Which specific version of the tech-note.  Optional.
**  v=BOOLEAN         Show details if TRUE.  Default is FALSE.  Optional.
**
** Display an existing tech-note identified by its ID, optionally at a
** specific version, and optionally with additional details.
*/
void event_page(void){
  int rid = 0;             /* rid of the event artifact */
  char *zUuid;             /* artifact hash corresponding to rid */
  const char *zId;         /* Event identifier */
  const char *zVerbose;    /* Value of verbose option */
  char *zETime;            /* Time of the tech-note */
  char *zATime;            /* Time the artifact was created */
  int specRid;             /* rid specified by aid= parameter */
  int prevRid, nextRid;    /* Previous or next edits of this tech-note */
  Manifest *pTNote;        /* Parsed technote artifact */
  Blob fullbody;           /* Complete content of the technote body */
  Blob title;              /* Title extracted from the technote body */
  Blob tail;               /* Event body that comes after the title */
  Stmt q1;                 /* Query to search for the technote */
  int verboseFlag;         /* True to show details */
  const char *zMimetype = 0;  /* Mimetype of the document */
  const char *zFullId;     /* Full event identifier */


  /* wiki-read privilege is needed in order to read tech-notes.
  */
  login_check_credentials();
  if( !g.perm.RdWiki ){
    login_needed(g.anon.RdWiki);
    return;
  }

  zId = P("name");
  if( zId==0 ){ fossil_redirect_home(); return; }
  zUuid = (char*)P("aid");
  specRid = zUuid ? uuid_to_rid(zUuid, 0) : 0;
  rid = nextRid = prevRid = 0;
  db_prepare(&q1,
     "SELECT rid FROM tagxref"
     " WHERE tagid=(SELECT tagid FROM tag WHERE tagname GLOB 'event-%q*')"
     " ORDER BY mtime DESC",
     zId
  );
  while( db_step(&q1)==SQLITE_ROW ){
    nextRid = rid;
    rid = db_column_int(&q1, 0);
    if( specRid==0 || specRid==rid ){
      if( db_step(&q1)==SQLITE_ROW ){
        prevRid = db_column_int(&q1, 0);
      }
      break;
    }
  }
  db_finalize(&q1);
  style_set_current_feature("event");
  if( rid==0 || (specRid!=0 && specRid!=rid) ){
    style_header("No Such Tech-Note");
    @ Cannot locate a technical note called <b>%h(zId)</b>.
    style_finish_page();
    return;
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  zVerbose = P("v");
  if( !zVerbose ){
    zVerbose = P("verbose");
  }
  if( !zVerbose ){
    zVerbose = P("detail"); /* deprecated */
  }
  verboseFlag = (zVerbose!=0) && !is_false(zVerbose);

  /* Extract the event content.
  */
  cgi_check_for_malice();
  pTNote = manifest_get(rid, CFTYPE_EVENT, 0);
  if( pTNote==0 ){
    fossil_fatal("Object #%d is not a tech-note", rid);
  }
  zMimetype = wiki_filter_mimetypes(PD("mimetype",pTNote->zMimetype));
  blob_init(&fullbody, pTNote->zWiki, -1);
  blob_init(&title, 0, 0);
  blob_init(&tail, 0, 0);
  if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
    if( !wiki_find_title(&fullbody, &title, &tail) ){
      blob_appendf(&title, "Tech-note %S", zId);
      tail = fullbody;
    }
  }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
    markdown_to_html(&fullbody, &title, &tail);
    if( blob_size(&title)==0 ){
      blob_appendf(&title, "Tech-note %S", zId);
    }
  }else{
    blob_appendf(&title, "Tech-note %S", zId);
    tail = fullbody;
  }
  style_header("%s", blob_str(&title));
  if( g.perm.WrWiki && g.perm.Write && nextRid==0 ){
    style_submenu_element("Edit", "%R/technoteedit?name=%!S", zId);
    if( g.perm.Attach ){
      style_submenu_element("Attach",
           "%R/attachadd?technote=%!S&from=%R/technote/%!S", zId, zId);
    }
  }
  zETime = db_text(0, "SELECT datetime(%.17g)", pTNote->rEventDate);
  style_submenu_element("Context", "%R/timeline?c=%.20s", zId);
  if( g.perm.Hyperlink ){
    if( verboseFlag ){
      style_submenu_element("Plain",
                            "%R/technote?name=%!S&aid=%s&mimetype=text/plain",
                            zId, zUuid);
      if( nextRid ){
        char *zNext;
        zNext = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nextRid);
        style_submenu_element("Next", "%R/technote?name=%!S&aid=%s&v",
                              zId, zNext);
        free(zNext);
      }
      if( prevRid ){
        char *zPrev;
        zPrev = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", prevRid);
        style_submenu_element("Prev", "%R/technote?name=%!S&aid=%s&v",
                              zId, zPrev);
        free(zPrev);
      }
    }else{
      style_submenu_element("Detail", "%R/technote?name=%!S&aid=%s&v",
                            zId, zUuid);
    }
  }

  if( verboseFlag && g.perm.Hyperlink ){
    int i;
    const char *zClr = 0;
    Blob comment;

    zATime = db_text(0, "SELECT datetime(%.17g)", pTNote->rDate);
    @ <p>Tech-note [%z(href("%R/artifact/%!S",zUuid))%S(zUuid)</a>] at
    @ [%z(href("%R/timeline?c=%T",zETime))%s(zETime)</a>]
    @ entered by user <b>%h(pTNote->zUser)</b> on
    @ [%z(href("%R/timeline?c=%T",zATime))%s(zATime)</a>]:</p>
    @ <blockquote>
    for(i=0; i<pTNote->nTag; i++){
      if( fossil_strcmp(pTNote->aTag[i].zName,"+bgcolor")==0 ){
        zClr = pTNote->aTag[i].zValue;
      }
    }
    if( zClr && zClr[0]==0 ) zClr = 0;
    if( zClr ){
      @ <div style="background-color: %h(zClr);">
    }else{
      @ <div>
    }
    blob_init(&comment, pTNote->zComment, -1);
    wiki_convert(&comment, 0, WIKI_INLINE);
    blob_reset(&comment);
    @ </div>
    @ </blockquote><hr>
  }

  if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
    wiki_convert(&fullbody, 0, 0);
  }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
    cgi_append_content(blob_buffer(&tail), blob_size(&tail));
  }else{
    @ <pre>
    @ %h(blob_str(&fullbody))
    @ </pre>
  }
  zFullId = db_text(0, "SELECT SUBSTR(tagname,7)"
                       "  FROM tag"
                       " WHERE tagname GLOB 'event-%q*'",
                    zId);
  attachment_list(zFullId, "<hr><h2>Attachments:</h2><ul>");
  document_emit_js();
  style_finish_page();
  manifest_destroy(pTNote);
}

/*
** Add or update a new tech note to the repository.  rid is id of
** the prior version of this technote, if any.
**
** returns 1 if the tech note was added or updated, 0 if the
** update failed making an invalid artifact
*/
int event_commit_common(
  int rid,                 /* id of the prior version of the technote */
  const char *zId,         /* hash label for the technote */
  const char *zBody,       /* content of the technote */
  char *zETime,            /* timestamp for the technote */
  const char *zMimetype,   /* mimetype for the technote N-card */
  const char *zComment,    /* comment shown on the timeline */
  const char *zTags,       /* tags associated with this technote */
  const char *zClr         /* Background color */
){
  Blob event;
  char *zDate;
  Blob cksum;
  int nrid, n;

  blob_init(&event, 0, 0);
  db_begin_transaction();
  while( fossil_isspace(zComment[0]) ) zComment++;
  n = strlen(zComment);
  while( n>0 && fossil_isspace(zComment[n-1]) ){ n--; }
  if( n>0 ){
    blob_appendf(&event, "C %#F\n", n, zComment);
  }
  zDate = date_in_standard_format("now");
  blob_appendf(&event, "D %s\n", zDate);
  free(zDate);

  zETime[10] = 'T';
  blob_appendf(&event, "E %s %s\n", zETime, zId);
  zETime[10] = ' ';
  if( zMimetype && zMimetype[0] ){
    blob_appendf(&event, "N %s\n", zMimetype);
  }
  if( rid ){
    char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    blob_appendf(&event, "P %s\n", zUuid);
    free(zUuid);
  }
  if( zClr && zClr[0] ){
    blob_appendf(&event, "T +bgcolor * %F\n", zClr);
  }
  if( zTags && zTags[0] ){
    Blob tags, one;
    int i, j;
    Stmt q;
    char *zBlob;

    /* Load the tags string into a blob */
    blob_zero(&tags);
    blob_append(&tags, zTags, -1);

    /* Collapse all sequences of whitespace and "," characters into
    ** a single space character */
    zBlob = blob_str(&tags);
    for(i=j=0; zBlob[i]; i++, j++){
      if( fossil_isspace(zBlob[i]) || zBlob[i]==',' ){
        while( fossil_isspace(zBlob[i+1]) ){ i++; }
        zBlob[j] = ' ';
      }else{
        zBlob[j] = zBlob[i];
      }
    }
    blob_resize(&tags, j);

    /* Parse out each tag and load it into a temporary table for sorting */
    db_multi_exec("CREATE TEMP TABLE newtags(x);");
    while( blob_token(&tags, &one) ){
      db_multi_exec("INSERT INTO newtags VALUES(%B)", &one);
    }
    blob_reset(&tags);

    /* Extract the tags in sorted order and make an entry in the
    ** artifact for each. */
    db_prepare(&q, "SELECT x FROM newtags ORDER BY x");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&event, "T +sym-%F *\n", db_column_text(&q, 0));
    }
    db_finalize(&q);
  }
  if( !login_is_nobody() ){
    blob_appendf(&event, "U %F\n", login_name());
  }
  blob_appendf(&event, "W %d\n%s\n", strlen(zBody), zBody);
  md5sum_blob(&event, &cksum);
  blob_appendf(&event, "Z %b\n", &cksum);
  blob_reset(&cksum);
  nrid = content_put(&event);
  db_add_unsent(nrid);
  if( manifest_crosslink(nrid, &event, MC_NONE)==0 ){
    db_end_transaction(1);
    return 0;
  }
  assert( blob_is_reset(&event) );
  content_deltify(rid, &nrid, 1, 0);
  db_end_transaction(0);
  return 1;
}

/*
** WEBPAGE: technoteedit
** WEBPAGE: eventedit
**
** Revise or create a technical note (formerly called an "event").
**
** Required query parameter:
**
**    name=ID           Hex hash ID of the technote. If omitted, a new
**                      tech-note is created.
**
** POST parameters from the "Cancel", "Preview", or "Submit" buttons:
**
**    w=TEXT            Complete text of the technote.
**    t=TEXT            Time of the technote on the timeline (ISO 8601)
**    c=TEXT            Timeline comment
**    g=TEXT            Tags associated with this technote
**    mimetype=TEXT     Mimetype for w= text
**    newclr            Use a background color
**    clr=TEXT          Background color to use if newclr
**
** For GET requests, when editing an existing technote newclr and clr
** are implied if a custom color has been set on the previous version
** of the technote.
*/
void eventedit_page(void){
  char *zTag;
  int rid = 0;
  Blob event;
  const char *zId;
  int n;
  const char *z;
  char *zBody = (char*)P("w");             /* Text of the technote */
  char *zETime = (char*)P("t");            /* Date this technote appears */
  const char *zComment = P("c");           /* Timeline comment */
  const char *zTags = P("g");              /* Tags added to this technote */
  const char *zClrFlag = "";               /* "checked" for bg color */
  const char *zClr;                        /* Name of the background color */
  const char *zMimetype = P("mimetype");   /* Mimetype of zBody */
  int isNew = 0;

  if( zBody ){
    zBody = mprintf("%s", zBody);
  }
  login_check_credentials();
  zId = P("name");
  if( zId==0 ){
    zId = db_text(0, "SELECT lower(hex(randomblob(20)))");
    isNew = 1;
  }else{
    int nId = strlen(zId);
    if( !validate16(zId, nId) ){
      fossil_redirect_home();
      return;
    }
  }
  zTag = mprintf("event-%s", zId);
  rid = db_int(0,
    "SELECT rid FROM tagxref"
    " WHERE tagid=(SELECT tagid FROM tag WHERE tagname GLOB '%q*')"
    " ORDER BY mtime DESC", zTag
  );
  if( rid && strlen(zId)<HNAME_MIN ){
    zId = db_text(0,
      "SELECT substr(tagname,7) FROM tag WHERE tagname GLOB '%q*'",
      zTag
    );
  }
  free(zTag);

  /* Need both check-in and wiki-write or wiki-create privileges in order
  ** to edit/create an event.
  */
  if( !g.perm.Write || (rid && !g.perm.WrWiki) || (!rid && !g.perm.NewWiki) ){
    login_needed(g.anon.Write && (rid ? g.anon.WrWiki : g.anon.NewWiki));
    return;
  }
  style_set_current_feature("event");

  /* Figure out the color */
  if( rid ){
    zClr = db_text("", "SELECT bgcolor FROM event WHERE objid=%d", rid);
    if( zClr && zClr[0] ){
      const char * zRequestMethod = P("REQUEST_METHOD");
      if(zRequestMethod && 'G'==zRequestMethod[0]){
        /* Apply saved color by defaut for GET requests
        ** (e.g., an Edit menu link).
        */
        zClrFlag = " checked";
      }
    }
  }else{
    zClr = "";
    isNew = 1;
  }
  if( P("newclr") ){
    zClr = PD("clr",zClr);
    if( zClr[0] ) zClrFlag = " checked";
  }

  /* If editing an existing event, extract the key fields to use as
  ** a starting point for the edit.
  */
  if( rid
   && (zBody==0 || zETime==0 || zComment==0 || zTags==0 || zMimetype==0)
  ){
    Manifest *pTNote;
    pTNote = manifest_get(rid, CFTYPE_EVENT, 0);
    if( pTNote && pTNote->type==CFTYPE_EVENT ){
      if( zBody==0 ) zBody = pTNote->zWiki;
      if( zETime==0 ){
        zETime = db_text(0, "SELECT datetime(%.17g)", pTNote->rEventDate);
      }
      if( zComment==0 ) zComment = pTNote->zComment;
      if( zMimetype==0 ) zMimetype = pTNote->zMimetype;
    }
    if( zTags==0 ){
      zTags = db_text(0,
        "SELECT group_concat(substr(tagname,5),', ')"
        "  FROM tagxref, tag"
        " WHERE tagxref.rid=%d"
        "   AND tagxref.tagid=tag.tagid"
        "   AND tag.tagname GLOB 'sym-*'",
        rid
      );
    }
  }
  zETime = db_text(0, "SELECT coalesce(datetime(%Q),datetime('now'))", zETime);
  if( P("submit")!=0 && (zBody!=0 && zComment!=0) && cgi_csrf_safe(2) ){
    if ( !event_commit_common(rid, zId, zBody, zETime,
                              zMimetype, zComment, zTags,
                              zClrFlag[0] ? zClr : 0) ){
      style_header("Error");
      @ Internal error:  Fossil tried to make an invalid artifact for
      @ the edited technote.
      style_finish_page();
      return;
    }
    cgi_redirectf("%R/technote?name=%T", zId);
  }
  if( P("cancel")!=0 ){
    cgi_redirectf("%R/technote?name=%T", zId);
    return;
  }
  if( zBody==0 ){
    zBody = mprintf("Insert new content here...");
  }
  if( isNew ){
    style_header("New Tech-note %S", zId);
  }else{
    style_header("Edit Tech-note %S", zId);
  }
  if( P("preview")!=0 ){
    Blob com;
    @ <p><b>Timeline comment preview:</b></p>
    @ <blockquote>
    @ <table border="0">
    if( zClrFlag[0] && zClr && zClr[0] ){
      @ <tr><td style="background-color: %h(zClr);">
    }else{
      @ <tr><td>
    }
    blob_zero(&com);
    blob_append(&com, zComment, -1);
    wiki_convert(&com, 0, WIKI_INLINE|WIKI_NOBADLINKS);
    @ </td></tr></table>
    @ </blockquote>
    @ <p><b>Page content preview:</b><p>
    @ <blockquote>
    blob_init(&event, 0, 0);
    blob_append(&event, zBody, -1);
    safe_html_context(DOCSRC_WIKI);
    wiki_render_by_mimetype(&event, zMimetype);
    @ </blockquote><hr>
    blob_reset(&event);
  }
  for(n=2, z=zBody; z[0]; z++){
    if( z[0]=='\n' ) n++;
  }
  if( n<20 ) n = 20;
  if( n>40 ) n = 40;
  @ <form method="post" action="%R/technoteedit"><div>
  login_insert_csrf_secret();
  @ <input type="hidden" name="name" value="%h(zId)">
  @ <table border="0" cellspacing="10">

  @ <tr><th align="right" valign="top">Timestamp (UTC):</th>
  @ <td valign="top">
  @   <input type="text" name="t" size="25" value="%h(zETime)">
  @ </td></tr>

  @ <tr><th align="right" valign="top">Timeline Comment:</th>
  @ <td valign="top">
  @ <textarea name="c" class="technoteedit" cols="80"
  @  rows="3" wrap="virtual">%h(zComment)</textarea>
  @ </td></tr>

  @ <tr><th align="right" valign="top">Timeline Background Color:</th>
  @ <td valign="top">
  @ <input type='checkbox' name='newclr'%s(zClrFlag)>
  @ Use custom color: \
  @ <input type='color' name='clr' value='%s(zClr[0]?zClr:"#c0f0ff")'>
  @ </td></tr>

  @ <tr><th align="right" valign="top">Tags:</th>
  @ <td valign="top">
  @   <input type="text" name="g" size="40" value="%h(zTags)">
  @ </td></tr>

  @ <tr><th align="right" valign="top">\
  @ %z(href("%R/markup_help"))Markup Style</a>:</th>
  @ <td valign="top">
  mimetype_option_menu(zMimetype, "mimetype");
  @ </td></tr>

  @ <tr><th align="right" valign="top">Page&nbsp;Content:</th>
  @ <td valign="top">
  @ <textarea name="w" class="technoteedit" cols="80"
  @  rows="%d(n)" wrap="virtual">%h(zBody)</textarea>
  @ </td></tr>

  @ <tr><td colspan="2">
  @ <input type="submit" name="cancel" value="Cancel">
  @ <input type="submit" name="preview" value="Preview">
  if( P("preview") ){
    @ <input type="submit" name="submit" value="Submit">
  }
  @ </td></tr></table>
  @ </div></form>
  style_finish_page();
}

/*
** Add a new tech note to the repository.  The timestamp is
** given by the zETime parameter.  rid must be zero to create
** a new page.  If no previous page with the name zPageName exists
** and isNew is false, then this routine throws an error.
*/
void event_cmd_commit(
  char *zETime,             /* timestamp */
  int   rid,                /* Artifact id of the tech note */
  Blob *pContent,           /* content of the new page */
  const char *zMimeType,    /* mimetype of the content */
  const char *zComment,     /* comment to go on the timeline */
  const char *zTags,        /* tags */
  const char *zClr          /* background color */
){
  const char *zId;        /* id of the tech note */

  if ( rid==0 ){
    zId = db_text(0, "SELECT lower(hex(randomblob(20)))");
  }else{
    zId = db_text(0,
      "SELECT substr(tagname,7) FROM tag"
      " WHERE tagid=(SELECT tagid FROM event WHERE objid='%d')",
      rid
    );
  }

  user_select();
  if (event_commit_common(rid, zId, blob_str(pContent), zETime,
      zMimeType, zComment, zTags, zClr)==0 ){
#ifdef FOSSIL_ENABLE_JSON
    g.json.resultCode = FSL_JSON_E_ASSERT;
#endif
    fossil_panic("Internal error: Fossil tried to make an "
                 "invalid artifact for the technote.");
  }
}
Added src/export.c.







































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to export the content of a Fossil
** repository in the git-fast-import format.
*/
#include "config.h"
#include "export.h"
#include <assert.h>

/*
** State information common to all export types.
*/
static struct {
  const char *zTrunkName;     /* Name of trunk branch */
} gexport;

#if INTERFACE
/*
** Each line in a git-fast-export "marK" file is an instance of
** this object.
*/
struct mark_t {
  char *name;       /* Name of the mark.  Also starts with ":" */
  int rid;          /* Corresponding object in the BLOB table */
  char uuid[65];    /* The GIT hash name for this object */
};
#endif

/*
** Output a "committer" record for the given user.
** NOTE: the given user name may be an email itself.
*/
static void print_person(const char *zUser){
  static Stmt q;
  const char *zContact;
  char *zName;
  char *zEmail;
  int i, j;
  int isBracketed, atEmailFirst, atEmailLast;

  if( zUser==0 ){
    printf(" <unknown>");
    return;
  }
  db_static_prepare(&q, "SELECT info FROM user WHERE login=:user");
  db_bind_text(&q, ":user", zUser);
  if( db_step(&q)!=SQLITE_ROW ){
    db_reset(&q);
    zName = mprintf("%s", zUser);
    for(i=j=0; zName[i]; i++){
      if( zName[i]!='<' && zName[i]!='>' && zName[i]!='"' ){
        zName[j++] = zName[i];
      }
    }
    zName[j] = 0;
    printf(" %s <%s>", zName, zName);
    free(zName);
    return;
  }

  /*
  ** We have contact information.
  ** It may or may not contain an email address.
  **
  ** ASSUME:
  ** - General case:"Name Unicoded" <email@address.com> other info
  ** - If contact information contains more than an email address,
  **   then the email address is enclosed between <>
  ** - When only email address is specified, then it's stored verbatim
  ** - When name part is absent or all-blanks, use zUser instead
   */
  zName = NULL;
  zEmail = NULL;
  zContact = db_column_text(&q, 0);
  atEmailFirst = -1;
  atEmailLast = -1;
  isBracketed = 0;
  for(i=0; zContact[i] && zContact[i]!='@'; i++){
     if( zContact[i]=='<' ){
        isBracketed = 1;
        atEmailFirst = i+1;
     }
     else if( zContact[i]=='>' ){
        isBracketed = 0;
        atEmailFirst = i+1;
     }
     else if( zContact[i]==' ' && !isBracketed ){
        atEmailFirst = i+1;
     }
  }
  if( zContact[i]==0 ){
    /* No email address found. Take as user info if not empty */
    zName = mprintf("%s", zContact[0] ? zContact : zUser);
    for(i=j=0; zName[i]; i++){
      if( zName[i]!='<' && zName[i]!='>' && zName[i]!='"' ){
        zName[j++] = zName[i];
      }
    }
    zName[j] = 0;

    printf(" %s <%s>",  zName, zName);
    free(zName);
    db_reset(&q);
    return;
  }
  for(j=i+1; zContact[j] && zContact[j]!=' '; j++){
     if( zContact[j]=='>' )
        atEmailLast = j-1;
  }
  if ( atEmailLast==-1 ) atEmailLast = j-1;
  if ( atEmailFirst==-1 ) atEmailFirst = 0; /* Found only email */

  /*
  ** Found beginning and end of email address.
  ** Extract the address (trimmed and sanitized).
  */
  for(j=atEmailFirst; zContact[j] && zContact[j]==' '; j++){}
  zEmail = mprintf("%.*s", atEmailLast-j+1, &zContact[j]);

  for(i=j=0; zEmail[i]; i++){
     if( zEmail[i]!='<' && zEmail[i]!='>' ){
         zEmail[j++] = zEmail[i];
     }
  }
  zEmail[j] = 0;

  /*
  ** When bracketed email, extract the string _before_
  ** email as user name (may be enquoted).
  ** If missing or all-blank name, use zUser.
  */
  if( isBracketed && (atEmailFirst-1) > 0){
     for(i=atEmailFirst-2; i>=0 && zContact[i] && zContact[i]==' '; i--){}
     if( i>=0 ){
         for(j=0; j<i && zContact[j] && zContact[j]==' '; j++){}
         zName = mprintf("%.*s", i-j+1, &zContact[j]);
     }
  }

  if( zName==NULL ) zName = mprintf("%s", zUser);
  for(i=j=0; zName[i]; i++){
     if( zName[i]!='<' && zName[i]!='>' && zName[i]!='"' ){
         zName[j++] = zName[i];
     }
  }
  zName[j] = 0;

  printf(" %s <%s>", zName, zEmail);
  free(zName);
  free(zEmail);
  db_reset(&q);
}

#define REFREPLACEMENT        '_'

/*
** Output a sanitized git named reference.
** https://git-scm.com/docs/git-check-ref-format
** This implementation assumes we are only printing
** the branch or tag part of the reference.
*/
static void print_ref(const char *zRef){
  char *zEncoded = mprintf("%s", zRef);
  int i, w;
  if (zEncoded[0]=='@' && zEncoded[1]=='\0'){
    putchar(REFREPLACEMENT);
    return;
  }
  for(i=0, w=0; zEncoded[i]; i++, w++){
    if( i!=0 ){ /* Two letter tests */
      if( (zEncoded[i-1]=='.' && zEncoded[i]=='.') ||
          (zEncoded[i-1]=='@' && zEncoded[i]=='{') ){
        zEncoded[w]=zEncoded[w-1]=REFREPLACEMENT;
        continue;
      }
      if( zEncoded[i-1]=='/' && zEncoded[i]=='/' ){
        w--; /* Normalise to a single / by rolling back w */
        continue;
      }
    }
    /* No control characters */
    if( (unsigned)zEncoded[i]<0x20 || zEncoded[i]==0x7f ){
      zEncoded[w]=REFREPLACEMENT;
      continue;
    }
    switch( zEncoded[i] ){
      case ' ':
      case '^':
      case ':':
      case '?':
      case '*':
      case '[':
      case '\\':
        zEncoded[w]=REFREPLACEMENT;
        break;
    }
  }
  /* Cannot begin with a . or / */
  if( zEncoded[0]=='.' || zEncoded[0] == '/' ) zEncoded[0]=REFREPLACEMENT;
  if( i>0 ){
    i--; w--;
    /* Or end with a . or / */
    if( zEncoded[i]=='.' || zEncoded[i] == '/' ) zEncoded[w]=REFREPLACEMENT;
    /* Cannot end with .lock */
    if ( i>4 && strcmp((zEncoded+i)-5, ".lock")==0 )
      memset((zEncoded+w)-5, REFREPLACEMENT, 5);
  }
  printf("%s", zEncoded);
  free(zEncoded);
}

#define BLOBMARK(rid)   ((rid) * 2)
#define COMMITMARK(rid) ((rid) * 2 + 1)

/*
** insert_commit_xref()
**   Insert a new (mark,rid,uuid) entry into the 'xmark' table.
**   zName and zUuid must be non-null and must point to NULL-terminated strings.
*/
void insert_commit_xref(int rid, const char *zName, const char *zUuid){
  db_multi_exec(
    "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
    "VALUES(%Q,%d,%Q)",
    zName, rid, zUuid
  );
}

/*
** create_mark()
**   Create a new (mark,rid,uuid) entry for the given rid in the 'xmark' table,
**   and return that information as a struct mark_t in *mark.
**   *unused_mark is a value representing a mark that is free for use--that is,
**   it does not appear in the marks file, and has not been used during this
**   export run.  Specifically, it is the supremum of the set of used marks
**   plus one.
**   This function returns -1 in the case where 'rid' does not exist, otherwise
**   it returns 0.
**   mark->name is dynamically allocated and is owned by the caller upon return.
*/
int create_mark(int rid, struct mark_t *mark, unsigned int *unused_mark){
  char sid[13];
  char *zUuid = rid_to_uuid(rid);
  if( !zUuid ){
    fossil_trace("Undefined rid=%d\n", rid);
    return -1;
  }
  mark->rid = rid;
  sqlite3_snprintf(sizeof(sid), sid, ":%d", *unused_mark);
  *unused_mark += 1;
  mark->name = fossil_strdup(sid);
  sqlite3_snprintf(sizeof(mark->uuid), mark->uuid, "%s", zUuid);
  free(zUuid);
  insert_commit_xref(mark->rid, mark->name, mark->uuid);
  return 0;
}

/*
** mark_name_from_rid()
**   Find the mark associated with the given rid.  Mark names always start
**   with ':', and are pulled from the 'xmark' temporary table.
**   If the given rid doesn't have a mark associated with it yet, one is
**   created with a value of *unused_mark.
**   *unused_mark functions exactly as in create_mark().
**   This function returns NULL if the rid does not have an associated UUID,
**   (i.e. is not valid).  Otherwise, it returns the name of the mark, which is
**   dynamically allocated and is owned by the caller of this function.
*/
char * mark_name_from_rid(int rid, unsigned int *unused_mark){
  char *zMark = db_text(0, "SELECT tname FROM xmark WHERE trid=%d", rid);
  if( zMark==NULL ){
    struct mark_t mark;
    if( create_mark(rid, &mark, unused_mark)==0 ){
      zMark = mark.name;
    }else{
      return NULL;
    }
  }
  return zMark;
}

/*
** Parse a single line of the mark file.  Store the result in the mark object.
**
** "line" is a single line of input.
** This function returns -1 in the case that the line is blank, malformed, or
** the rid/uuid named in 'line' does not match what is in the repository
** database.  Otherwise, 0 is returned.
**
** mark->name is dynamically allocated, and owned by the caller.
*/
int parse_mark(char *line, struct mark_t *mark){
  char *cur_tok;
  char type_;
  cur_tok = strtok(line, " \t");
  if( !cur_tok || strlen(cur_tok)<2 ){
    return -1;
  }
  mark->rid = atoi(&cur_tok[1]);
  type_ = cur_tok[0];
  if( type_!='c' && type_!='b' ){
    /* This is probably a blob mark */
    mark->name = NULL;
    return 0;
  }

  cur_tok = strtok(NULL, " \t");
  if( !cur_tok ){
    /* This mark was generated by an older version of Fossil and doesn't
    ** include the mark name and uuid.  create_mark() will name the new mark
    ** exactly as it was when exported to git, so that we should have a
    ** valid mapping from git hash<->mark name<->fossil hash. */
    unsigned int mid;
    if( type_=='c' ){
      mid = COMMITMARK(mark->rid);
    }
    else{
      mid = BLOBMARK(mark->rid);
    }
    return create_mark(mark->rid, mark, &mid);
  }else{
    mark->name = fossil_strdup(cur_tok);
  }

  cur_tok = strtok(NULL, "\n");
  if( !cur_tok || (strlen(cur_tok)!=40 && strlen(cur_tok)!=64) ){
    free(mark->name);
    fossil_trace("Invalid SHA-1/SHA-3 in marks file: %s\n", cur_tok);
    return -1;
  }else{
    sqlite3_snprintf(sizeof(mark->uuid), mark->uuid, "%s", cur_tok);
  }

  /* make sure that rid corresponds to UUID */
  if( fast_uuid_to_rid(mark->uuid)!=mark->rid ){
    free(mark->name);
    fossil_trace("Non-existent SHA-1/SHA-3 in marks file: %s\n", mark->uuid);
    return -1;
  }

  /* insert a cross-ref into the 'xmark' table */
  insert_commit_xref(mark->rid, mark->name, mark->uuid);
  return 0;
}

/*
** Import the marks specified in file 'f';
** If 'blobs' is non-null, insert all blob marks into it.
** If 'vers' is non-null, insert all commit marks into it.
** If 'unused_marks' is non-null, upon return of this function, all values
** x >= *unused_marks are free to use as marks, i.e. they do not clash with
** any marks appearing in the marks file.
**
** Each line in the file must be at most 100 characters in length.  This
** seems like a reasonable maximum for a 40-character uuid, and 1-13
** character rid.
**
** The function returns -1 if any of the lines in file 'f' are malformed,
** or the rid/uuid information doesn't match what is in the repository
** database.  Otherwise, 0 is returned.
*/
int import_marks(FILE* f, Bag *blobs, Bag *vers, unsigned int *unused_mark){
  char line[101];
  while(fgets(line, sizeof(line), f)){
    struct mark_t mark;
    if( strlen(line)==100 && line[99]!='\n' ){
      /* line too long */
      return -1;
    }
    if( parse_mark(line, &mark)<0 ){
      return -1;
    }else if( line[0]=='b' ){
      if( blobs!=NULL ){
        bag_insert(blobs, mark.rid);
      }
    }else{
      if( vers!=NULL ){
        bag_insert(vers, mark.rid);
      }
    }
    if( unused_mark!=NULL ){
      unsigned int mid = atoi(mark.name + 1);
      if( mid>=*unused_mark ){
        *unused_mark = mid + 1;
      }
    }
    free(mark.name);
  }
  return 0;
}

void export_mark(FILE* f, int rid, char obj_type)
{
  unsigned int z = 0;
  char *zUuid = rid_to_uuid(rid);
  char *zMark;
  if( zUuid==NULL ){
    fossil_trace("No uuid matching rid=%d when exporting marks\n", rid);
    return;
  }
  /* Since rid is already in the 'xmark' table, the value of z won't be
  ** used, but pass in a valid pointer just to be safe. */
  zMark = mark_name_from_rid(rid, &z);
  fprintf(f, "%c%d %s %s\n", obj_type, rid, zMark, zUuid);
  free(zMark);
  free(zUuid);
}

/*
**  If 'blobs' is non-null, it must point to a Bag of blob rids to be
**  written to disk.  Blob rids are written as 'b<rid>'.
**  If 'vers' is non-null, it must point to a Bag of commit rids to be
**  written to disk.  Commit rids are written as 'c<rid> :<mark> <uuid>'.
**  All commit (mark,rid,uuid) tuples are stored in 'xmark' table.
**  This function does not fail, but may produce errors if a uuid cannot
**  be found for an rid in 'vers'.
*/
void export_marks(FILE* f, Bag *blobs, Bag *vers){
  int rid;

  if( blobs!=NULL ){
    rid = bag_first(blobs);
    if( rid!=0 ){
      do{
        export_mark(f, rid, 'b');
      }while( (rid = bag_next(blobs, rid))!=0 );
    }
  }
  if( vers!=NULL ){
    rid = bag_first(vers);
    if( rid!=0 ){
      do{
        export_mark(f, rid, 'c');
      }while( (rid = bag_next(vers, rid))!=0 );
    }
  }
}

/* This is the original header command (and hence documentation) for
** the "fossil export" command:
**
** Usage: %fossil export --git ?OPTIONS? ?REPOSITORY?
**
** Write an export of all check-ins to standard output.  The export is
** written in the git-fast-export file format assuming the --git option is
** provided.  The git-fast-export format is currently the only VCS
** interchange format supported, though other formats may be added in
** the future.
**
** Run this command within a check-out.  Or use the -R or --repository
** option to specify a Fossil repository to be exported.
**
** Only check-ins are exported using --git.  Git does not support tickets
** or wiki or tech notes or attachments, so none of those are exported.
**
** If the "--import-marks FILE" option is used, it contains a list of
** rids to skip.
**
** If the "--export-marks FILE" option is used, the rid of all commits and
** blobs written on exit for use with "--import-marks" on the next run.
**
** Options:
**   --export-marks FILE          Export rids of exported data to FILE
**   --import-marks FILE          Read rids of data to ignore from FILE
**   --rename-trunk NAME          Use NAME as name of exported trunk branch
**   -R|--repository REPO         Export the given REPOSITORY
**
** See also: import
*/
/*
** COMMAND: export*
**
** This command is deprecated.  Use "fossil git export" instead.
*/
void export_cmd(void){
  Stmt q, q2, q3;
  Bag blobs, vers;
  unsigned int unused_mark = 1;
  const char *markfile_in;
  const char *markfile_out;

  bag_init(&blobs);
  bag_init(&vers);

  find_option("git", 0, 0);   /* Ignore the --git option for now */
  markfile_in = find_option("import-marks", 0, 1);
  markfile_out = find_option("export-marks", 0, 1);

  if( !(gexport.zTrunkName = find_option("rename-trunk", 0, 1)) ){
    gexport.zTrunkName = "trunk";
  }

  db_find_and_open_repository(0, 2);
  verify_all_options();
  if( g.argc!=2 && g.argc!=3 ){ usage("--git ?REPOSITORY?"); }

  db_multi_exec("CREATE TEMPORARY TABLE oldblob(rid INTEGER PRIMARY KEY)");
  db_multi_exec("CREATE TEMPORARY TABLE oldcommit(rid INTEGER PRIMARY KEY)");
  db_multi_exec("CREATE TEMP TABLE xmark(tname TEXT UNIQUE, trid INT,"
                " tuuid TEXT)");
  db_multi_exec("CREATE INDEX xmark_trid ON xmark(trid)");
  if( markfile_in!=0 ){
    Stmt qb,qc;
    FILE *f;
    int rid;

    f = fossil_fopen(markfile_in, "r");
    if( f==0 ){
      fossil_fatal("cannot open %s for reading", markfile_in);
    }
    if( import_marks(f, &blobs, &vers, &unused_mark)<0 ){
      fossil_fatal("error importing marks from file: %s", markfile_in);
    }
    db_prepare(&qb, "INSERT OR IGNORE INTO oldblob VALUES (:rid)");
    db_prepare(&qc, "INSERT OR IGNORE INTO oldcommit VALUES (:rid)");
    rid = bag_first(&blobs);
    if( rid!=0 ){
      do{
        db_bind_int(&qb, ":rid", rid);
        db_step(&qb);
        db_reset(&qb);
      }while((rid = bag_next(&blobs, rid))!=0);
    }
    rid = bag_first(&vers);
    if( rid!=0 ){
      do{
        db_bind_int(&qc, ":rid", rid);
        db_step(&qc);
        db_reset(&qc);
      }while((rid = bag_next(&vers, rid))!=0);
    }
    db_finalize(&qb);
    db_finalize(&qc);
    fclose(f);
  }

  /* Step 1:  Generate "blob" records for every artifact that is part
  ** of a check-in
  */
  fossil_binary_mode(stdout);
  db_multi_exec("CREATE TEMP TABLE newblob(rid INTEGER KEY, srcid INTEGER)");
  db_multi_exec("CREATE INDEX newblob_src ON newblob(srcid)");
  db_multi_exec(
    "INSERT INTO newblob"
    " SELECT DISTINCT fid,"
    "  CASE WHEN EXISTS(SELECT 1 FROM delta"
                       " WHERE rid=fid"
                       "   AND NOT EXISTS(SELECT 1 FROM oldblob"
                                         " WHERE srcid=fid))"
    "   THEN (SELECT srcid FROM delta WHERE rid=fid)"
    "   ELSE 0"
    "  END"
    " FROM mlink"
    " WHERE fid>0 AND NOT EXISTS(SELECT 1 FROM oldblob WHERE rid=fid)");
  db_prepare(&q,
    "SELECT DISTINCT fid FROM mlink"
    " WHERE fid>0 AND NOT EXISTS(SELECT 1 FROM oldblob WHERE rid=fid)");
  db_prepare(&q2, "INSERT INTO oldblob VALUES (:rid)");
  db_prepare(&q3, "SELECT rid FROM newblob WHERE srcid= (:srcid)");
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    Blob content;

    while( !bag_find(&blobs, rid) ){
      char *zMark;
      content_get(rid, &content);
      db_bind_int(&q2, ":rid", rid);
      db_step(&q2);
      db_reset(&q2);
      zMark = mark_name_from_rid(rid, &unused_mark);
      printf("blob\nmark %s\ndata %d\n", zMark, blob_size(&content));
      free(zMark);
      bag_insert(&blobs, rid);
      fwrite(blob_buffer(&content), 1, blob_size(&content), stdout);
      printf("\n");
      blob_reset(&content);

      db_bind_int(&q3, ":srcid", rid);
      if( db_step(&q3) != SQLITE_ROW ){
        db_reset(&q3);
        break;
      }
      rid = db_column_int(&q3, 0);
      db_reset(&q3);
    }
  }
  db_finalize(&q);
  db_finalize(&q2);
  db_finalize(&q3);

  /* Output the commit records.
  */
  topological_sort_checkins(0);
  db_prepare(&q,
    "SELECT strftime('%%s',mtime), objid, coalesce(ecomment,comment),"
    "       coalesce(euser,user),"
    "       (SELECT value FROM tagxref WHERE rid=objid AND tagid=%d)"
    "  FROM toponode, event"
    " WHERE toponode.tid=event.objid"
    "   AND event.type='ci'"
    "   AND NOT EXISTS (SELECT 1 FROM oldcommit WHERE toponode.tid=rid)"
    " ORDER BY toponode.tseq ASC",
    TAG_BRANCH
  );
  db_prepare(&q2, "INSERT INTO oldcommit VALUES (:rid)");
  while( db_step(&q)==SQLITE_ROW ){
    Stmt q4;
    const char *zSecondsSince1970 = db_column_text(&q, 0);
    int ckinId = db_column_int(&q, 1);
    const char *zComment = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    const char *zBranch = db_column_text(&q, 4);
    char *zMark;

    bag_insert(&vers, ckinId);
    db_bind_int(&q2, ":rid", ckinId);
    db_step(&q2);
    db_reset(&q2);
    if( zBranch==0 || fossil_strcmp(zBranch, "trunk")==0 ){
      zBranch = gexport.zTrunkName;
    }
    zMark = mark_name_from_rid(ckinId, &unused_mark);
    printf("commit refs/heads/");
    print_ref(zBranch);
    printf("\nmark %s\n", zMark);
    free(zMark);
    printf("committer");
    print_person(zUser);
    printf(" %s +0000\n", zSecondsSince1970);
    if( zComment==0 ) zComment = "null comment";
    printf("data %d\n%s\n", (int)strlen(zComment), zComment);
    db_prepare(&q3,
      "SELECT pid FROM plink"
      " WHERE cid=%d AND isprim"
      "   AND pid IN (SELECT objid FROM event)",
      ckinId
    );
    if( db_step(&q3) == SQLITE_ROW ){
      int pid = db_column_int(&q3, 0);
      zMark = mark_name_from_rid(pid, &unused_mark);
      printf("from %s\n", zMark);
      free(zMark);
      db_prepare(&q4,
        "SELECT pid FROM plink"
        " WHERE cid=%d AND NOT isprim"
        "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=pid)"
        " ORDER BY pid",
        ckinId);
      while( db_step(&q4)==SQLITE_ROW ){
        zMark = mark_name_from_rid(db_column_int(&q4, 0), &unused_mark);
        printf("merge %s\n", zMark);
        free(zMark);
      }
      db_finalize(&q4);
    }else{
      printf("deleteall\n");
    }

    db_prepare(&q4,
      "SELECT filename.name, mlink.fid, mlink.mperm FROM mlink"
      " JOIN filename ON filename.fnid=mlink.fnid"
      " WHERE mlink.mid=%d",
      ckinId
    );
    while( db_step(&q4)==SQLITE_ROW ){
      const char *zName = db_column_text(&q4,0);
      int zNew = db_column_int(&q4,1);
      int mPerm = db_column_int(&q4,2);
      if( zNew==0 ){
        printf("D %s\n", zName);
      }else if( bag_find(&blobs, zNew) ){
        const char *zPerm;
        zMark = mark_name_from_rid(zNew, &unused_mark);
        switch( mPerm ){
          case PERM_LNK:  zPerm = "120000";   break;
          case PERM_EXE:  zPerm = "100755";   break;
          default:        zPerm = "100644";   break;
        }
        printf("M %s %s %s\n", zPerm, zMark, zName);
        free(zMark);
      }
    }
    db_finalize(&q4);
    db_finalize(&q3);
    printf("\n");
  }
  db_finalize(&q2);
  db_finalize(&q);
  manifest_cache_clear();


  /* Output tags */
  db_prepare(&q,
     "SELECT tagname, rid, strftime('%%s',mtime),"
     "       (SELECT coalesce(euser, user) FROM event WHERE objid=rid),"
     "       value"
     "  FROM tagxref JOIN tag USING(tagid)"
     " WHERE tagtype=1 AND tagname GLOB 'sym-*'"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagname = db_column_text(&q, 0);
    int rid = db_column_int(&q, 1);
    char *zMark = mark_name_from_rid(rid, &unused_mark);
    const char *zSecSince1970 = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    const char *zValue = db_column_text(&q, 4);
    if( rid==0 || !bag_find(&vers, rid) ) continue;
    zTagname += 4;
    printf("tag ");
    print_ref(zTagname);
    printf("\nfrom %s\n", zMark);
    free(zMark);
    printf("tagger");
    print_person(zUser);
    printf(" %s +0000\n", zSecSince1970);
    printf("data %d\n", zValue==NULL?0:(int)strlen(zValue)+1);
    if( zValue!=NULL ) printf("%s\n",zValue);
  }
  db_finalize(&q);

  if( markfile_out!=0 ){
    FILE *f;
    f = fossil_fopen(markfile_out, "w");
    if( f == 0 ){
      fossil_fatal("cannot open %s for writing", markfile_out);
    }
    export_marks(f, &blobs, &vers);
    if( ferror(f)!=0 || fclose(f)!=0 ){
      fossil_fatal("error while writing %s", markfile_out);
    }
  }
  bag_clear(&blobs);
  bag_clear(&vers);
}

/*
** Construct the temporary table toposort as follows:
**
**     CREATE TEMP TABLE toponode(
**        tid INTEGER PRIMARY KEY,   -- Check-in id
**        tseq INT                   -- integer total order on check-ins.
**     );
**
** This table contains all check-ins of the repository in topological
** order.  "Topological order" means that every parent check-in comes
** before all of its children.  Topological order is *almost* the same
** thing as "ORDER BY event.mtime".  Differences only arise when there
** are timewarps.  In as much as Git hates timewarps, we have to compute
** a correct topological order when doing an export.
**
** Since mtime is a usually already nearly in topological order, the
** algorithm is to start with mtime, then make adjustments as necessary
** for timewarps.  This is not a great algorithm for the general case,
** but it is very fast for the overwhelmingly common case where there
** are few timewarps.
*/
int topological_sort_checkins(int bVerbose){
  int nChange = 0;
  Stmt q1;
  Stmt chng;
  db_multi_exec(
    "CREATE TEMP TABLE toponode(\n"
    "  tid INTEGER PRIMARY KEY,\n"
    "  tseq INT\n"
    ");\n"
    "INSERT INTO toponode(tid,tseq) "
    " SELECT objid, CAST(mtime*8640000 AS int) FROM event WHERE type='ci';\n"
    "CREATE TEMP TABLE topolink(\n"
    "  tparent INT,\n"
    "  tchild INT,\n"
    "  PRIMARY KEY(tparent,tchild)\n"
    ") WITHOUT ROWID;"
    "INSERT INTO topolink(tparent,tchild)"
    "  SELECT pid, cid FROM plink;\n"
    "CREATE INDEX topolink_child ON topolink(tchild);\n"
  );

  /* Find a timewarp instance */
  db_prepare(&q1,
    "SELECT P.tseq, C.tid, C.tseq\n"
    "  FROM toponode P, toponode C, topolink X\n"
    " WHERE X.tparent=P.tid\n"
    "   AND X.tchild=C.tid\n"
    "   AND P.tseq>=C.tseq;"
  );

  /* Update the timestamp on :tid to have value :tseq */
  db_prepare(&chng,
    "UPDATE toponode SET tseq=:tseq WHERE tid=:tid"
  );

  while( db_step(&q1)==SQLITE_ROW ){
    i64 iParentTime = db_column_int64(&q1, 0);
    int iChild = db_column_int(&q1, 1);
    i64 iChildTime = db_column_int64(&q1, 2);
    nChange++;
    if( nChange>10000 ){
      fossil_fatal("failed to fix all timewarps after 100000 attempts");
    }
    db_reset(&q1);
    db_bind_int64(&chng, ":tid", iChild);
    db_bind_int64(&chng, ":tseq", iParentTime+1);
    db_step(&chng);
    db_reset(&chng);
    if( bVerbose ){
      fossil_print("moving %d from %lld to %lld\n",
                   iChild, iChildTime, iParentTime+1);
    }
  }

  db_finalize(&q1);
  db_finalize(&chng);
  return nChange;
}

/*
** COMMAND: test-topological-sort
**
** Invoke the topological_sort_checkins() interface for testing
** purposes.
*/
void test_topological_sort(void){
  int n;
  db_find_and_open_repository(0, 0);
  n = topological_sort_checkins(1);
  fossil_print("%d reorderings required\n", n);
}

/***************************************************************************
** Implementation of the "fossil git" command follows.  We hope that the
** new code that follows will largely replace the legacy "fossil export"
** and "fossil import" code above.
*/

/* Verbosity level.  Higher means more output.
**
**    0     print nothing at all
**    1     Errors only
**    2     Progress information (This is the default)
**    3     Extra details
*/
#define VERB_ERROR  1
#define VERB_NORMAL 2
#define VERB_EXTRA  3
static int gitmirror_verbosity = VERB_NORMAL;

/* The main branch in the Git repository.  The "trunk" branch of
** Fossil is renamed to be this branch name.
*/
static const char *gitmirror_mainbranch = 0;

/*
** Output routine that depends on verbosity
*/
static void gitmirror_message(int iLevel, const char *zFormat, ...){
  va_list ap;
  if( iLevel>gitmirror_verbosity ) return;
  va_start(ap, zFormat);
  fossil_vprint(zFormat, ap);
  va_end(ap);
}

/*
** Convert characters of z[] that are not allowed to be in branch or
** tag names into "_".
*/
static void gitmirror_sanitize_name(char *z){
  static unsigned char aSafe[] = {
     /* x0 x1 x2 x3 x4 x5 x6 x7 x8  x9 xA xB xC xD xE xF */
         0, 0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0, 0,  /* 0x */
         0, 0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0, 0,  /* 1x */
         0, 1, 0, 1, 0, 1, 1, 0, 1,  1, 0, 1, 1, 1, 1, 1,  /* 2x */
         1, 1, 1, 1, 1, 1, 1, 1, 1,  1, 0, 0, 1, 1, 1, 0,  /* 3x */
         0, 1, 1, 1, 1, 1, 1, 1, 1,  1, 1, 1, 1, 1, 1, 1,  /* 4x */
         1, 1, 1, 1, 1, 1, 1, 1, 1,  1, 1, 0, 0, 1, 0, 1,  /* 5x */
         0, 1, 1, 1, 1, 1, 1, 1, 1,  1, 1, 1, 1, 1, 1, 1,  /* 6x */
         1, 1, 1, 1, 1, 1, 1, 1, 1,  1, 1, 1, 1, 1, 0, 0,  /* 7x */
  };
  unsigned char *zu = (unsigned char*)z;
  int i;
  for(i=0; zu[i]; i++){
    if( zu[i]>0x7f || !aSafe[zu[i]] ){
      zu[i] = '_';
    }else if( zu[i]=='/' && (i==0 || zu[i+1]==0 || zu[i+1]=='/') ){
      zu[i] = '_';
    }else if( zu[i]=='.' && (zu[i+1]==0 || zu[i+1]=='.'
                             || (i>0 && zu[i-1]=='.')) ){
      zu[i] = '_';
    }
  }
}

/*
** COMMAND: test-sanitize-name
**
** Usage: %fossil ARG...
**
** This sanitizes each argument and make it part of an "echo" command
** run by the shell.
*/
void test_sanitize_name_cmd(void){
  sqlite3_str *pStr;
  int i;
  char *zCmd;
  pStr = sqlite3_str_new(0);
  sqlite3_str_appendall(pStr, "echo");
  for(i=2; i<g.argc; i++){
    char *z = fossil_strdup(g.argv[i]);
    gitmirror_sanitize_name(z);
    sqlite3_str_appendf(pStr, " \"%s\"", z);
    fossil_free(z);
  }
  zCmd = sqlite3_str_finish(pStr);
  fossil_print("Command: %s\n", zCmd);
  fossil_system(zCmd);
  sqlite3_free(zCmd);
}

/*
** Quote a filename as a C-style string using \\ and \" if necessary.
** If quoting is not necessary, just return a copy of the input string.
**
** The return value is a held in memory obtained from fossil_malloc()
** and must be freed by the caller.
*/
static char *gitmirror_quote_filename_if_needed(const char *zIn){
  int i, j;
  char c;
  int nSpecial = 0;
  char *zOut;
  for(i=0; (c = zIn[i])!=0; i++){
    if( c=='\\' || c=='"' || c=='\n' ){
      nSpecial++;
    }
  }
  if( nSpecial==0 ){
    return fossil_strdup(zIn);
  }
  zOut = fossil_malloc( i+nSpecial+3 );
  zOut[0] = '"';
  for(i=0, j=1; (c = zIn[i])!=0; i++){
    if( c=='\\' || c=='"' || c=='\n' ){
      zOut[j++] = '\\';
      if( c=='\n' ){
        zOut[j++] = 'n';
      }else{
        zOut[j++] = c;
      }
    }else{
      zOut[j++] = c;
    }
  }
  zOut[j++] = '"';
  zOut[j] = 0;
  return zOut;
}

/*
** Find the Git-name corresponding to the Fossil-name zUuid.
**
** If the mark does not exist and if the bCreate flag is false, then
** return NULL.  If the mark does not exist and the bCreate flag is true,
** then create the mark.
**
** The string returned is obtained from fossil_malloc() and should
** be freed by the caller.
*/
static char *gitmirror_find_mark(const char *zUuid, int isFile, int bCreate){
  static Stmt sFind, sIns;
  db_static_prepare(&sFind,
    "SELECT coalesce(githash,printf(':%%d',id))"
    " FROM mirror.mmark WHERE uuid=:uuid AND isfile=:isfile"
  );
  db_bind_text(&sFind, ":uuid", zUuid);
  db_bind_int(&sFind, ":isfile", isFile!=0);
  if( db_step(&sFind)==SQLITE_ROW ){
    char *zMark = fossil_strdup(db_column_text(&sFind, 0));
    db_reset(&sFind);
    return zMark;
  }
  db_reset(&sFind);
  if( !bCreate ){
    return 0;
  }
  db_static_prepare(&sIns,
    "INSERT INTO mirror.mmark(uuid,isfile) VALUES(:uuid,:isfile)"
  );
  db_bind_text(&sIns, ":uuid", zUuid);
  db_bind_int(&sIns, ":isfile", isFile!=0);
  db_step(&sIns);
  db_reset(&sIns);
  return mprintf(":%d", db_last_insert_rowid());
}

/* This is the SHA3-256 hash of an empty file */
static const char zEmptySha3[] =
  "a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a";

/*
** Export a single file named by zUuid.
**
** Return 0 on success and non-zero on any failure.
**
** If zUuid is a shunned file, then treat it as if it were any empty file.
** But files that are missing from the repository but have not been officially
** shunned cause an error return.  Except, if bPhantomOk is true, then missing
** files are replaced by an empty file.
*/
static int gitmirror_send_file(FILE *xCmd, const char *zUuid, int bPhantomOk){
  char *zMark;
  int rid;
  int rc;
  Blob data;
  rid = fast_uuid_to_rid(zUuid);
  if( rid<0 ){
    if( bPhantomOk || uuid_is_shunned(zUuid) ){
      gitmirror_message(VERB_EXTRA, "missing file: %s\n", zUuid);
      zUuid = zEmptySha3;
    }else{
      return 1;
    }
  }else{
    rc = content_get(rid, &data);
    if( rc==0 ){
      if( bPhantomOk ){
        blob_init(&data, 0, 0);
        gitmirror_message(VERB_EXTRA, "missing file: %s\n", zUuid);
        zUuid = zEmptySha3;
      }else{
        return 1;
      }
    }
  }
  zMark = gitmirror_find_mark(zUuid, 1, 1);
  if( zMark[0]==':' ){
    fprintf(xCmd, "blob\nmark %s\ndata %d\n", zMark, blob_size(&data));
    fwrite(blob_buffer(&data), 1, blob_size(&data), xCmd);
    fprintf(xCmd, "\n");
  }
  fossil_free(zMark);
  blob_reset(&data);
  return 0;
}

/*
** Transfer a check-in over to the mirror.  "rid" is the BLOB.RID for
** the check-in to export.
**
** If any ancestor of the check-in has not yet been exported, then
** invoke this routine recursively to export the ancestor first.
** This can only happen on a timewarp, so deep nesting is unlikely.
**
** Before sending the check-in, first make sure all associated files
** have already been exported, and send "blob" records for any that
** have not been.  Update the MIRROR.MMARK table so that it holds the
** marks for the exported files.
**
** Return zero on success and non-zero if the export should be stopped.
*/
static int gitmirror_send_checkin(
  FILE *xCmd,           /* Write fast-import text on this pipe */
  int rid,              /* BLOB.RID for the check-in to export */
  const char *zUuid,    /* BLOB.UUID for the check-in to export */
  int *pnLimit,         /* Stop when the counter reaches zero */
  int fManifest         /* MFESTFLG_* values */
){
  Manifest *pMan;       /* The check-in to be output */
  int i;                /* Loop counter */
  int iParent;          /* Which immediate ancestor is primary.  -1 for none */
  Stmt q;               /* An SQL query */
  char *zBranch;        /* The branch of the check-in */
  char *zMark;          /* The Git-name of the check-in */
  Blob sql;             /* String of SQL for part of the query */
  Blob comment;         /* The comment text for the check-in */
  int nErr = 0;         /* Number of errors */
  int bPhantomOk;       /* True if phantom files should be ignored */
  char buf[24];
  char *zEmail;         /* Contact info for Git committer field */

  pMan = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( pMan==0 ){
    /* Must be a phantom.  Return without doing anything, and in particular
    ** without creating a mark for this check-in. */
    gitmirror_message(VERB_NORMAL, "missing check-in: %s\n", zUuid);
    return 0;
  }

  /* Check to see if any parent logins have not yet been processed, and
  ** if so, create them */
  for(i=0; i<pMan->nParent; i++){
    char *zPMark = gitmirror_find_mark(pMan->azParent[i], 0, 0);
    if( zPMark==0 ){
      int prid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q",
                        pMan->azParent[i]);
      int rc = gitmirror_send_checkin(xCmd, prid, pMan->azParent[i],
                                      pnLimit, fManifest);
      if( rc || *pnLimit<=0 ){
        manifest_destroy(pMan);
        return 1;
      }
    }
    fossil_free(zPMark);
  }

  /* Ignore phantom files on check-ins that are over one year old */
  bPhantomOk = db_int(0, "SELECT %.6f<julianday('now','-1 year')",
                      pMan->rDate);

  /* Make sure all necessary files have been exported */
  db_prepare(&q,
    "SELECT uuid FROM files_of_checkin(%Q)"
    " WHERE uuid NOT IN (SELECT uuid FROM mirror.mmark)",
    zUuid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFUuid = db_column_text(&q, 0);
    int n = gitmirror_send_file(xCmd, zFUuid, bPhantomOk);
    nErr += n;
    if( n ) gitmirror_message(VERB_ERROR, "missing file: %s\n", zFUuid);
  }
  db_finalize(&q);

  /* If some required files could not be exported, abandon the check-in
  ** export */
  if( nErr ){
    gitmirror_message(VERB_ERROR,
             "export of %s abandoned due to missing files\n", zUuid);
    *pnLimit = 0;
    manifest_destroy(pMan);
    return 1;
  }

  /* Figure out which branch this check-in is a member of */
  zBranch = db_text(0,
    "SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0 AND rid=%d",
    TAG_BRANCH, rid
  );
  if( fossil_strcmp(zBranch,"trunk")==0 ){
    assert( gitmirror_mainbranch!=0 );
    fossil_free(zBranch);
    zBranch = mprintf("%s",gitmirror_mainbranch);
  }else if( zBranch==0 ){
    zBranch = mprintf("unknown");
  }else{
    gitmirror_sanitize_name(zBranch);
  }

  /* Export the check-in */
  fprintf(xCmd, "commit refs/heads/%s\n", zBranch);
  fossil_free(zBranch);
  zMark = gitmirror_find_mark(zUuid,0,1);
  fprintf(xCmd, "mark %s\n", zMark);
  fossil_free(zMark);
  sqlite3_snprintf(sizeof(buf), buf, "%lld",
     (sqlite3_int64)((pMan->rDate-2440587.5)*86400.0)
  );

  /*
  ** Check for 'fx_' table from previous Git import, otherwise take contact info
  ** from user table for <emailaddr> in committer field. If no emailaddr, check
  ** if username is in email form, otherwise use generic 'username@noemail.net'.
  */
  if (db_table_exists("repository", "fx_git")) {
    zEmail = db_text(0, "SELECT email FROM fx_git WHERE user=%Q", pMan->zUser);
  } else {
    zEmail = db_text(0, "SELECT info FROM user WHERE login=%Q", pMan->zUser);
  }

  /* Some repo 'info' fields return an empty string hence the second check */
  if( zEmail==0 ){
    /* If username is in emailaddr form, don't append '@noemail.net' */
    if( pMan->zUser==0 || strchr(pMan->zUser, '@')==0 ){
      zEmail = mprintf("%s@noemail.net", pMan->zUser);
    } else {
      zEmail = fossil_strdup(pMan->zUser);
    }
  }else{
    char *zTmp = strchr(zEmail, '<');
    if( zTmp ){
      char *zTmpEnd = strchr(zTmp+1, '>');
      char *zNew;
      int i;
      if( zTmpEnd ) *(zTmpEnd) = 0;
      zNew = fossil_strdup(zTmp+1);
      fossil_free(zEmail);
      zEmail = zNew;
      for(i=0; zEmail[i] && !fossil_isspace(zEmail[i]); i++){}
      zEmail[i] = 0;
    }
  }
  fprintf(xCmd, "# rid=%d\n", rid);
  fprintf(xCmd, "committer %s <%s> %s +0000\n", pMan->zUser, zEmail, buf);
  fossil_free(zEmail);
  blob_init(&comment, pMan->zComment, -1);
  if( blob_size(&comment)==0 ){
    blob_append(&comment, "(no comment)", -1);
  }
  blob_appendf(&comment, "\n\nFossilOrigin-Name: %s", zUuid);
  fprintf(xCmd, "data %d\n%s\n", blob_strlen(&comment), blob_str(&comment));
  blob_reset(&comment);
  iParent = -1;  /* Which ancestor is the primary parent */
  for(i=0; i<pMan->nParent; i++){
    char *zOther = gitmirror_find_mark(pMan->azParent[i],0,0);
    if( zOther==0 ) continue;
    if( iParent<0 ){
      iParent = i;
      fprintf(xCmd, "from %s\n", zOther);
    }else{
      fprintf(xCmd, "merge %s\n", zOther);
    }
    fossil_free(zOther);
  }
  if( iParent>=0 ){
    db_prepare(&q,
      "SELECT filename FROM files_of_checkin(%Q)"
      " EXCEPT SELECT filename FROM files_of_checkin(%Q)",
      pMan->azParent[iParent], zUuid
    );
    while( db_step(&q)==SQLITE_ROW ){
      fprintf(xCmd, "D %s\n", db_column_text(&q,0));
    }
    db_finalize(&q);
  }
  blob_init(&sql, 0, 0);
  blob_append_sql(&sql,
    "SELECT filename, uuid, perm FROM files_of_checkin(%Q)",
    zUuid
  );
  if( pMan->nParent ){
    blob_append_sql(&sql,
      " EXCEPT SELECT filename, uuid, perm FROM files_of_checkin(%Q)",
      pMan->azParent[0]);
  }
  db_prepare(&q,
     "SELECT x.filename, x.perm,"
          "  coalesce(mmark.githash,printf(':%%d',mmark.id))"
     "  FROM (%s) AS x, mirror.mmark"
     " WHERE mmark.uuid=x.uuid AND isfile",
     blob_sql_text(&sql)
  );
  blob_reset(&sql);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFilename = db_column_text(&q,0);
    const char *zMode = db_column_text(&q,1);
    const char *zMark = db_column_text(&q,2);
    const char *zGitMode = "100644";
    char *zFNQuoted = 0;
    if( zMode ){
      if( strchr(zMode,'x') ) zGitMode = "100755";
      if( strchr(zMode,'l') ) zGitMode = "120000";
    }
    zFNQuoted = gitmirror_quote_filename_if_needed(zFilename);
    fprintf(xCmd,"M %s %s %s\n", zGitMode, zMark, zFNQuoted);
    fossil_free(zFNQuoted);
  }
  db_finalize(&q);
  manifest_destroy(pMan);
  pMan = 0;

  /* Include Fossil-generated auxiliary files in the check-in */
  if( fManifest & MFESTFLG_RAW ){
    Blob manifest;
    content_get(rid, &manifest);
    sterilize_manifest(&manifest, CFTYPE_MANIFEST);
    fprintf(xCmd,"M 100644 inline manifest\ndata %d\n%s\n",
      blob_strlen(&manifest), blob_str(&manifest));
    blob_reset(&manifest);
  }
  if( fManifest & MFESTFLG_UUID ){
    int n = (int)strlen(zUuid);
    fprintf(xCmd,"M 100644 inline manifest.uuid\ndata %d\n%s\n\n", n+1, zUuid);
  }
  if( fManifest & MFESTFLG_TAGS ){
    Blob tagslist;
    blob_init(&tagslist, 0, 0);
    get_checkin_taglist(rid, &tagslist);
    fprintf(xCmd,"M 100644 inline manifest.tags\ndata %d\n%s\n",
      blob_strlen(&tagslist), blob_str(&tagslist));
    blob_reset(&tagslist);
  }

  /* The check-in is finished, so decrement the counter */
  (*pnLimit)--;
  return 0;
}

/*
** Create a new Git repository at zMirror to use as the mirror.
** Try to make zMainBr be the main branch for the new repository.
**
** A side-effect of this routine is that current-working directory
** is changed to zMirror.
**
** If zMainBr is initially NULL, then the return value will be the
** name of the default branch to be used by Git.  If zMainBr is
** initially non-NULL, then the return value will be a copy of zMainBr.
*/
static char *gitmirror_init(
  const char *zMirror,
  char *zMainBr
){
  char *zCmd;
  int rc;

  /* Create a new Git repository at zMirror */
  zCmd = mprintf("git init %$", zMirror);
  gitmirror_message(VERB_NORMAL, "%s\n", zCmd);
  rc = fossil_system(zCmd);
  if( rc ){
    fossil_fatal("cannot initialize git repository using: %s", zCmd);
  }
  fossil_free(zCmd);

  /* Must be in the new Git repository directory for subsequent commands */
  rc = file_chdir(zMirror, 0);
  if( rc ){
    fossil_fatal("cannot change to directory \"%s\"", zMirror);
  }

  if( zMainBr ){
    /* Set the current branch to zMainBr */
    zCmd = mprintf("git symbolic-ref HEAD refs/heads/%s", zMainBr);
    gitmirror_message(VERB_NORMAL, "%s\n", zCmd);
    rc = fossil_system(zCmd);
    if( rc ){
      fossil_fatal("git command failed: %s", zCmd);
    }
    fossil_free(zCmd);
  }else{
    /* If zMainBr is not specified, then check to see what branch
    ** name Git chose for itself */
    char *z;
    char zLine[1000];
    FILE *xCmd;
    int i;
    zCmd = "git symbolic-ref --short HEAD";
    gitmirror_message(VERB_NORMAL, "%s\n", zCmd);
    xCmd = popen(zCmd, "r");
    if( xCmd==0 ){
      fossil_fatal("git command failed: %s", zCmd);
    }

    z = fgets(zLine, sizeof(zLine), xCmd);
    pclose(xCmd);
    if( z==0 ){
      fossil_fatal("no output from \"%s\"", zCmd);
    }
    for(i=0; z[i] && !fossil_isspace(z[i]); i++){}
    z[i] = 0;
    zMainBr = fossil_strdup(z);
  }
  return zMainBr;
}

/*
** Implementation of the "fossil git export" command.
*/
void gitmirror_export_command(void){
  const char *zLimit;             /* Text of the --limit flag */
  int nLimit = 0x7fffffff;        /* Numeric value of the --limit flag */
  int nTotal = 0;                 /* Total number of check-ins to export */
  char *zMirror;                  /* Name of the mirror */
  char *z;                        /* Generic string */
  char *zCmd;                     /* git command to run as a subprocess */
  const char *zDebug = 0;         /* Value of the --debug flag */
  const char *zAutoPush = 0;      /* Value of the --autopush flag */
  char *zMainBr = 0;              /* Value of the --mainbranch flag */
  char *zPushUrl;                 /* URL to sync the mirror to */
  double rEnd;                    /* time of most recent export */
  int rc;                         /* Result code */
  int bForce;                     /* Do the export and sync even if no changes*/
  int bNeedRepack = 0;            /* True if we should run repack at the end */
  int fManifest;                  /* Current "manifest" setting */
  int bIfExists;                  /* The --if-mirrored flag */
  FILE *xCmd;                     /* Pipe to the "git fast-import" command */
  FILE *pMarks;                   /* Git mark files */
  Stmt q;                         /* Queries */
  char zLine[200];                /* One line of a mark file */

  zDebug = find_option("debug",0,1);
  db_find_and_open_repository(0, 0);
  zLimit = find_option("limit", 0, 1);
  if( zLimit ){
    nLimit = (unsigned int)atoi(zLimit);
    if( nLimit<=0 ) fossil_fatal("--limit must be positive");
  }
  zAutoPush = find_option("autopush",0,1);
  zMainBr = (char*)find_option("mainbranch",0,1);
  bForce = find_option("force","f",0)!=0;
  bIfExists = find_option("if-mirrored",0,0)!=0;
  gitmirror_verbosity = VERB_NORMAL;
  while( find_option("quiet","q",0)!=0 ){ gitmirror_verbosity--; }
  while( find_option("verbose","v",0)!=0 ){ gitmirror_verbosity++; }
  verify_all_options();
  if( g.argc!=4 && g.argc!=3 ){ usage("export ?MIRROR?"); }
  if( g.argc==4 ){
    Blob mirror;
    file_canonical_name(g.argv[3], &mirror, 0);
    db_set("last-git-export-repo", blob_str(&mirror), 0);
    blob_reset(&mirror);
  }
  zMirror = db_get("last-git-export-repo", 0);
  if( zMirror==0 ){
    if( bIfExists ) return;
    fossil_fatal("no Git repository specified");
  }

  if( zMainBr ){
    z = fossil_strdup(zMainBr);
    gitmirror_sanitize_name(z);
    if( strcmp(z, zMainBr) ){
      fossil_fatal("\"%s\" is not a legal branch name for Git", zMainBr);
    }
    fossil_free(z);
  }

  /* Make sure the GIT repository directory exists */
  rc = file_mkdir(zMirror, ExtFILE, 0);
  if( rc ) fossil_fatal("cannot create directory \"%s\"", zMirror);

  /* Make sure GIT has been initialized */
  z = mprintf("%s/.git", zMirror);
  if( !file_isdir(z, ExtFILE) ){
    zMainBr = gitmirror_init(zMirror, zMainBr);
    bNeedRepack = 1;
  }
  fossil_free(z);

  /* Make sure the .mirror_state subdirectory exists */
  z = mprintf("%s/.mirror_state", zMirror);
  rc = file_mkdir(z, ExtFILE, 0);
  if( rc ) fossil_fatal("cannot create directory \"%s\"", z);
  fossil_free(z);

  /* Attach the .mirror_state/db database */
  db_multi_exec("ATTACH '%q/.mirror_state/db' AS mirror;", zMirror);
  db_begin_write();
  db_multi_exec(
    "CREATE TABLE IF NOT EXISTS mirror.mconfig(\n"
    "  key TEXT PRIMARY KEY,\n"
    "  Value ANY\n"
    ") WITHOUT ROWID;\n"
    "CREATE TABLE IF NOT EXISTS mirror.mmark(\n"
    "  id INTEGER PRIMARY KEY,\n"
    "  uuid TEXT,\n"
    "  isfile BOOLEAN,\n"
    "  githash TEXT,\n"
    "  UNIQUE(uuid,isfile)\n"
    ");"
  );
  if( !db_table_has_column("mirror","mmark","isfile") ){
    db_multi_exec(
      "ALTER TABLE mirror.mmark RENAME TO mmark_old;"
      "CREATE TABLE IF NOT EXISTS mirror.mmark(\n"
      "  id INTEGER PRIMARY KEY,\n"
      "  uuid TEXT,\n"
      "  isfile BOOLEAN,\n"
      "  githash TEXT,\n"
      "  UNIQUE(uuid,isfile)\n"
      ");"
      "INSERT OR IGNORE INTO mirror.mmark(id,uuid,githash,isfile)"
      "  SELECT id,uuid,githash,"
      "    NOT EXISTS(SELECT 1 FROM repository.event, repository.blob"
                 " WHERE event.objid=blob.rid"
                 "   AND blob.uuid=mmark_old.uuid)"
      "    FROM mirror.mmark_old;\n"
      "DROP TABLE mirror.mmark_old;\n"
    );
  }

  /* Change the autopush setting if the --autopush flag is present */
  if( zAutoPush ){
    if( is_false(zAutoPush) ){
      db_multi_exec("DELETE FROM mirror.mconfig WHERE key='autopush'");
    }else{
      db_multi_exec(
         "REPLACE INTO mirror.mconfig(key,value)"
         "VALUES('autopush',%Q)",
         zAutoPush
      );
    }
  }

  /* Change the mainbranch setting if the --mainbranch flag is present */
  if( zMainBr && zMainBr[0] ){
    db_multi_exec(
       "REPLACE INTO mirror.mconfig(key,value)"
       "VALUES('mainbranch',%Q)",
       zMainBr
    );
    gitmirror_mainbranch = fossil_strdup(zMainBr);
  }else{
    /* Recover the saved name of the main branch */
    gitmirror_mainbranch = db_text("master",
                "SELECT value FROM mconfig WHERE key='mainbranch'");
  }


  /* See if there is any work to be done.  Exit early if not, before starting
  ** the "git fast-import" command. */
  if( !bForce
   && !db_exists("SELECT 1 FROM event WHERE type IN ('ci','t')"
                 " AND mtime>coalesce((SELECT value FROM mconfig"
                                        " WHERE key='start'),0.0)")
  ){
    gitmirror_message(VERB_NORMAL, "no changes\n");
    db_commit_transaction();
    return;
  }

  /* Do we need to include manifest files in the clone? */
  fManifest = db_get_manifest_setting();

  /* Change to the MIRROR directory so that the Git commands will work */
  rc = file_chdir(zMirror, 0);
  if( rc ) fossil_fatal("cannot change the working directory to \"%s\"",
                        zMirror);

  /* Start up the git fast-import command */
  if( zDebug ){
    if( fossil_strcmp(zDebug,"stdout")==0 ){
      xCmd = stdout;
    }else{
      xCmd = fopen(zDebug, "wb");
      if( xCmd==0 ) fossil_fatal("cannot open file \"%s\" for writing", zDebug);
    }
  }else{
    zCmd = mprintf("git fast-import"
              " --export-marks=.mirror_state/marks.txt"
              " --quiet --done");
    gitmirror_message(VERB_NORMAL, "%s\n", zCmd);
#ifdef _WIN32
    xCmd = popen(zCmd, "wb");
#else
    xCmd = popen(zCmd, "w");
#endif
    if( xCmd==0 ){
      fossil_fatal("cannot start the \"git fast-import\" command");
    }
    fossil_free(zCmd);
  }

  /* Run the export */
  rEnd = 0.0;
  db_multi_exec(
    "CREATE TEMP TABLE tomirror(objid,mtime,uuid);\n"
    "INSERT INTO tomirror "
    "SELECT objid, mtime, blob.uuid FROM event, blob\n"
    " WHERE type='ci'"
    "   AND mtime>coalesce((SELECT value FROM mconfig WHERE key='start'),0.0)"
    "   AND blob.rid=event.objid"
    "   AND blob.uuid NOT IN (SELECT uuid FROM mirror.mmark WHERE NOT isfile)"
    "   AND NOT EXISTS (SELECT 1 FROM private WHERE rid=blob.rid);"
  );
  nTotal = db_int(0, "SELECT count(*) FROM tomirror");
  if( nLimit<nTotal ){
    nTotal = nLimit;
  }else if( nLimit>nTotal ){
    nLimit = nTotal;
  }
  db_prepare(&q,
    "SELECT objid, mtime, uuid FROM tomirror ORDER BY mtime"
  );
  while( nLimit && db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    double rMTime = db_column_double(&q, 1);
    const char *zUuid = db_column_text(&q, 2);
    if( rMTime>rEnd ) rEnd = rMTime;
    rc = gitmirror_send_checkin(xCmd, rid, zUuid, &nLimit, fManifest);
    if( rc ) break;
    gitmirror_message(VERB_NORMAL,"%d/%d      \r", nTotal-nLimit, nTotal);
    fflush(stdout);
  }
  db_finalize(&q);
  fprintf(xCmd, "done\n");
  if( zDebug ){
    if( xCmd!=stdout ) fclose(xCmd);
  }else{
    pclose(xCmd);
  }
  gitmirror_message(VERB_NORMAL, "%d check-ins added to the %s\n",
                    nTotal-nLimit, zMirror);

  /* Read the export-marks file.  Transfer the new marks over into
  ** the import-marks file.
  */
  pMarks = fopen(".mirror_state/marks.txt", "rb");
  if( pMarks ){
    db_prepare(&q, "UPDATE mirror.mmark SET githash=:githash WHERE id=:id");
    while( fgets(zLine, sizeof(zLine), pMarks) ){
      int j, k;
      if( zLine[0]!=':' ) continue;
      db_bind_int(&q, ":id", atoi(zLine+1));
      for(j=1; zLine[j] && zLine[j]!=' '; j++){}
      if( zLine[j]!=' ' ) continue;
      j++;
      if( zLine[j]==0 ) continue;
      for(k=j; fossil_isalnum(zLine[k]); k++){}
      zLine[k] = 0;
      db_bind_text(&q, ":githash", &zLine[j]);
      db_step(&q);
      db_reset(&q);
    }
    db_finalize(&q);
    fclose(pMarks);
    file_delete(".mirror_state/marks.txt");
  }else{
    fossil_fatal("git fast-import didn't generate a marks file!");
  }
  db_multi_exec(
    "CREATE INDEX IF NOT EXISTS mirror.mmarkx1 ON mmark(githash);"
  );

  /* Do any tags that have been created since the start time */
  db_prepare(&q,
    "SELECT substr(tagname,5), githash"
    "  FROM (SELECT tagxref.tagid AS xtagid, tagname, rid, max(mtime) AS mtime"
    "          FROM tagxref JOIN tag ON tag.tagid=tagxref.tagid"
    "         WHERE tag.tagname GLOB 'sym-*'"
    "           AND tagxref.tagtype=1"
    "           AND tagxref.mtime > coalesce((SELECT value FROM mconfig"
                                        " WHERE key='start'),0.0)"
    "         GROUP BY tagxref.tagid) AS tx"
    "       JOIN blob ON tx.rid=blob.rid"
    "       JOIN mmark ON mmark.uuid=blob.uuid;"
  );
  while( db_step(&q)==SQLITE_ROW ){
    char *zTagname = fossil_strdup(db_column_text(&q,0));
    const char *zObj = db_column_text(&q,1);
    char *zTagCmd;
    gitmirror_sanitize_name(zTagname);
    zTagCmd = mprintf("git tag -f %$ %$", zTagname, zObj);
    fossil_free(zTagname);
    gitmirror_message(VERB_NORMAL, "%s\n", zTagCmd);
    fossil_system(zTagCmd);
    fossil_free(zTagCmd);
  }
  db_finalize(&q);

  /* Update all references that might have changed since the start time */
  db_prepare(&q,
    "SELECT"
    " tagxref.value AS name,"
    " max(event.mtime) AS mtime,"
    " mmark.githash AS gitckin"
    " FROM tagxref, tag, event, blob, mmark"
    " WHERE tagxref.tagid=tag.tagid"
    " AND tagxref.tagtype>0"
    " AND tag.tagname='branch'"
    " AND event.objid=tagxref.rid"
    " AND event.mtime > coalesce((SELECT value FROM mconfig"
                                  " WHERE key='start'),0.0)"
    " AND blob.rid=tagxref.rid"
    " AND mmark.uuid=blob.uuid"
    " GROUP BY 1"
  );
  while( db_step(&q)==SQLITE_ROW ){
    char *zBrname = fossil_strdup(db_column_text(&q,0));
    const char *zObj = db_column_text(&q,2);
    char *zRefCmd;
    if( fossil_strcmp(zBrname,"trunk")==0 ){
      fossil_free(zBrname);
      zBrname = fossil_strdup(gitmirror_mainbranch);
    }else{
      gitmirror_sanitize_name(zBrname);
    }
    zRefCmd = mprintf("git update-ref \"refs/heads/%s\" %$", zBrname, zObj);
    fossil_free(zBrname);
    gitmirror_message(VERB_NORMAL, "%s\n", zRefCmd);
    fossil_system(zRefCmd);
    fossil_free(zRefCmd);
  }
  db_finalize(&q);

  /* Update the start time */
  if( rEnd>0.0 ){
    db_prepare(&q, "REPLACE INTO mirror.mconfig(key,value) VALUES('start',:x)");
    db_bind_double(&q, ":x", rEnd);
    db_step(&q);
    db_finalize(&q);
  }
  db_commit_transaction();

  /* Maybe run a git repack */
  if( bNeedRepack ){
    const char *zRepack = "git repack -adf";
    gitmirror_message(VERB_NORMAL, "%s\n", zRepack);
    fossil_system(zRepack);
  }

  /* Optionally do a "git push" */
  zPushUrl = db_text(0, "SELECT value FROM mconfig WHERE key='autopush'");
  if( zPushUrl ){
    char *zPushCmd;
    UrlData url;
    if( sqlite3_strglob("http*", zPushUrl)==0 ){
      url_parse_local(zPushUrl, 0, &url);
      zPushCmd = mprintf("git push --mirror %s", url.canonical);
    }else{
      zPushCmd = mprintf("git push --mirror %s", zPushUrl);
    }
    gitmirror_message(VERB_NORMAL, "%s\n", zPushCmd);
    fossil_free(zPushCmd);
    zPushCmd = mprintf("git push --mirror %$", zPushUrl);
    rc = fossil_system(zPushCmd);
    if( rc ){
      fossil_fatal("cannot push content using: %s", zPushCmd);
    }else if( db_is_writeable("repository") ){
      db_unprotect(PROTECT_CONFIG);
      db_multi_exec("REPLACE INTO config(name,value,mtime)"
                    "VALUES('gitpush:%q','{}',now())", zPushUrl);
      db_protect_pop();
    }
    fossil_free(zPushCmd);
  }
}

/*
** Implementation of the "fossil git status" command.
**
** Show the status of a "git export".
*/
void gitmirror_status_command(void){
  char *zMirror;
  char *z;
  int n, k;
  int rc;
  char *zSql;
  int bQuiet = 0;
  int bByAll = 0;   /* Undocumented option meaning this command was invoked
                    ** from "fossil all" and should modify output accordingly */

  db_find_and_open_repository(0, 0);
  bQuiet = find_option("quiet","q",0)!=0;
  bByAll = find_option("by-all",0,0)!=0;
  verify_all_options();
  zMirror = db_get("last-git-export-repo", 0);
  if( zMirror==0 ){
    if( bQuiet ) return;
    if( bByAll ) return;
    fossil_print("Git mirror:  none\n");
    return;
  }
  zSql = sqlite3_mprintf("ATTACH '%q/.mirror_state/db' AS mirror", zMirror);
  if( zSql==0 ) fossil_fatal("out of memory");
  g.dbIgnoreErrors++;
  rc = sqlite3_exec(g.db, zSql, 0, 0, 0);
  g.dbIgnoreErrors--;
  sqlite3_free(zSql);
  if( rc ){
    if( bQuiet ) return;
    if( bByAll ) return;
    fossil_print("Git mirror:  %s  (Inactive)\n", zMirror);
    return;
  }
  if( bByAll ){
    size_t len = strlen(g.zRepositoryName);
    int n;
    if( len>60 ) len = 60;
    n = (int)(65 - len);
    fossil_print("%.12c %s %.*c\n", '*', g.zRepositoryName, n, '*');
  }
  fossil_print("Git mirror:  %s\n", zMirror);
  z = db_text(0, "SELECT datetime(value) FROM mconfig WHERE key='start'");
  if( z ){
    double rAge = db_double(0.0, "SELECT julianday('now') - value"
                              " FROM mconfig WHERE key='start'");
    if( rAge>1.0/86400.0 ){
      fossil_print("Last export: %s (%z ago)\n", z, human_readable_age(rAge));
    }else{
      fossil_print("Last export: %s (moments ago)\n", z);
    }
  }
  z = db_text(0, "SELECT value FROM mconfig WHERE key='autopush'");
  if( z==0 ){
    fossil_print("Autopush:    off\n");
  }else{
    UrlData url;
    if( sqlite3_strglob("http*", z)==0 ){
      url_parse_local(z, 0, &url);
      fossil_print("Autopush:    %s\n", url.canonical);
    }else{
      fossil_print("Autopush:    %s\n", z);
    }
    fossil_free(z);
  }
  n = db_int(0,
    "SELECT count(*) FROM event"
    " WHERE type='ci'"
    "   AND mtime>coalesce((SELECT value FROM mconfig"
                          "  WHERE key='start'),0.0)"
  );
  z = db_text("master", "SELECT value FROM mconfig WHERE key='mainbranch'");
  fossil_print("Main-Branch: %s\n",z);
  if( n==0 ){
    fossil_print("Status:      up-to-date\n");
  }else{
    fossil_print("Status:      %d check-in%s awaiting export\n",
                 n, n==1 ? "" : "s");
  }
  n = db_int(0, "SELECT count(*) FROM mmark WHERE isfile");
  k = db_int(0, "SELECT count(*) FROM mmark WHERE NOT isfile");
  fossil_print("Exported:    %d check-ins and %d file blobs\n", k, n);
}

/*
** COMMAND: git*
**
** Usage: %fossil git SUBCOMMAND
**
** Do incremental import or export operations between Fossil and Git.
** Subcommands:
**
** > fossil git export [MIRROR] [OPTIONS]
**
**       Write content from the Fossil repository into the Git repository
**       in directory MIRROR.  The Git repository is created if it does not
**       already exist.  If the Git repository does already exist, then
**       new content added to fossil since the previous export is appended.
**
**       Repeat this command whenever new check-ins are added to the Fossil
**       repository in order to reflect those changes into the mirror.  If
**       the MIRROR option is omitted, the repository from the previous
**       invocation is used.
**
**       The MIRROR directory will contain a subdirectory named
**       ".mirror_state" that contains information that Fossil needs to
**       do incremental exports.  Do not attempt to manage or edit the files
**       in that directory since doing so can disrupt future incremental
**       exports.
**
**       Options:
**         --autopush URL      Automatically do a 'git push' to URL.  The
**                             URL is remembered and used on subsequent exports
**                             to the same repository.  Or if URL is "off" the
**                             auto-push mechanism is disabled
**         --debug FILE        Write fast-export text to FILE rather than
**                             piping it into "git fast-import"
**         -f|--force          Do the export even if nothing has changed
**         --if-mirrored       No-op if the mirror does not already exist
**         --limit N           Add no more than N new check-ins to MIRROR.
**                             Useful for debugging
**         --mainbranch NAME   Use NAME as the name of the main branch in Git.
**                             The "trunk" branch of the Fossil repository is
**                             mapped into this name.  "master" is used if
**                             this option is omitted.
**         -q|--quiet          Reduce output. Repeat for even less output.
**         -v|--verbose        More output
**
** > fossil git import MIRROR
**
**       TBD...
**
** > fossil git status
**
**       Show the status of the current Git mirror, if there is one.
**
**         -q|--quiet         No output if there is nothing to report
*/
void gitmirror_command(void){
  char *zCmd;
  int nCmd;
  if( g.argc<3 ){
    usage("SUBCOMMAND ...");
  }
  zCmd =  g.argv[2];
  nCmd = (int)strlen(zCmd);
  if( nCmd>2 && strncmp(zCmd,"export",nCmd)==0 ){
    gitmirror_export_command();
  }else
  if( nCmd>2 && strncmp(zCmd,"import",nCmd)==0 ){
    fossil_fatal("not yet implemented - check back later");
  }else
  if( nCmd>2 && strncmp(zCmd,"status",nCmd)==0 ){
    gitmirror_status_command();
  }else
  {
    fossil_fatal("unknown subcommand \"%s\": should be one of "
                 "\"export\", \"import\", \"status\"",
                 zCmd);
  }
}
Added src/extcgi.c.

















































































































































































































































































































































































































































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/*
** Copyright (c) 2019 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to invoke CGI-based extensions to the
** Fossil server via the /ext webpage.
**
** The /ext webpage acts like a recursive webserver, relaying the
** HTTP request to some other component - usually another CGI.
**
** Before doing the relay, /ext examines the login cookie to see
** if the HTTP request is coming from a validated user, and if so
** /ext sets some additional environment variables that the extension
** CGI script can use.  In this way, the extension CGI scripts use the
** same login system as the main repository, and appear to be
** an integrated part of the repository.
*/
#include "config.h"
#include "extcgi.h"
#include <assert.h>

/*
** These are the environment variables that should be set for CGI
** extension programs:
*/
static const char *azCgiEnv[] = {
   "AUTH_TYPE",
   "AUTH_CONTENT",
   "CONTENT_LENGTH",
   "CONTENT_TYPE",
   "DOCUMENT_ROOT",
   "FOSSIL_CAPABILITIES",
   "FOSSIL_NONCE",
   "FOSSIL_REPOSITORY",
   "FOSSIL_URI",
   "FOSSIL_USER",
   "GATEWAY_INTERFACE",
   "HTTPS",
   "HTTP_ACCEPT",
   /* "HTTP_ACCEPT_ENCODING", // omitted from sub-cgi */
   "HTTP_ACCEPT_LANGUAGE",
   "HTTP_COOKIE",
   "HTTP_HOST",
   "HTTP_IF_MODIFIED_SINCE",
   "HTTP_IF_NONE_MATCH",
   "HTTP_REFERER",
   "HTTP_USER_AGENT",
   "PATH_INFO",
   "QUERY_STRING",
   "REMOTE_ADDR",
   "REMOTE_USER",
   "REQUEST_METHOD",
   "REQUEST_SCHEME",
   "REQUEST_URI",
   "SCRIPT_DIRECTORY",
   "SCRIPT_FILENAME",
   "SCRIPT_NAME",
   "SERVER_NAME",
   "SERVER_PORT",
   "SERVER_PROTOCOL",
   "SERVER_SOFTWARE",
};

/*
** Check a pathname to determine if it is acceptable for use as
** extension CGI.  Some pathnames are excluded for security reasons.
** Return NULL on success or a static error string if there is
** a failure.
*/
const char *ext_pathname_ok(const char *zName){
  int i;
  const char *zFailReason = 0;
  for(i=0; zName[i]; i++){
    char c = zName[i];
    if( (c=='.' || c=='-') && (i==0 || zName[i-1]=='/') ){
      zFailReason = "path element begins with '.' or '-'";
      break;
    }
    if( !fossil_isalnum(c) && c!='_' && c!='-' && c!='.' && c!='/' ){
      zFailReason = "illegal character in path";
      break;
    }
  }
  return zFailReason;
}

/*
** The *pzPath input is a pathname obtained from mprintf().
**
** If
**
**   (1) zPathname is the name of a directory, and
**   (2) the name ends with "/", and
**   (3) the directory contains a file named index.html, index.wiki,
**       or index.md (in that order)
**
** then replace the input with a revised name that includes the index.*
** file and return non-zero (true).  If any condition is not met, return
** zero and leave the input pathname unchanged.
*/
static int isDirWithIndexFile(char **pzPath){
  static const char *azIndexNames[] = {
    "index.html", "index.wiki", "index.md"
  };
  int i;
  if( file_isdir(*pzPath, ExtFILE)!=1 ) return 0;
  if( sqlite3_strglob("*/", *pzPath)!=0 ) return 0;
  for(i=0; i<(int)(sizeof(azIndexNames)/sizeof(azIndexNames[0])); i++){
    char *zNew = mprintf("%s%s", *pzPath, azIndexNames[i]);
    if( file_isfile(zNew, ExtFILE) ){
      fossil_free(*pzPath);
      *pzPath = zNew;
      return 1;
    }
    fossil_free(zNew);
  }
  return 0;
}

/*
** WEBPAGE: ext  raw-content
**
** Relay an HTTP request to secondary CGI after first checking the
** login credentials and setting auxiliary environment variables
** so that the secondary CGI can be aware of the credentials and
** capabilities of the Fossil user.
**
** The /ext page is only functional if the "extroot: DIR" setting is
** found in the CGI script that launched Fossil, or if the "--extroot DIR"
** flag is present when Fossil is launched using the "server", "ui", or
** "http" commands.  DIR must be an absolute pathname (relative to the
** chroot jail) of the root of the file hierarchy that implements the CGI
** functionality.  Executable files are CGI.  Non-executable files are
** static content.
**
** The path after the /ext is the path to the CGI script or static file
** relative to DIR. For security, this path may not contain characters
** other than ASCII letters or digits, ".", "-", "/", and "_".  If the
** "." or "-" characters are present in the path then they may not follow
** a "/".
**
** If the path after /ext ends with "/" and is the name of a directory then
** that directory is searched for files named "index.html", "index.wiki",
** and "index.md" (in that order) and if found, those filenames are
** appended to the path.
*/
void ext_page(void){
  const char *zName = P("name");  /* Path information after /ext */
  char *zPath = 0;                /* Complete path from extroot */
  int nRoot;                      /* Number of bytes in the extroot name */
  char *zScript = 0;              /* Name of the CGI script */
  int nScript = 0;                /* Bytes in the CGI script name */
  const char *zFailReason = "???";/* Reason for failure */
  int i;                          /* Loop counter */
  const char *zMime = 0;          /* MIME type of the reply */
  int fdFromChild = -1;           /* File descriptor for reading from child */
  FILE *toChild = 0;              /* FILE for sending to child */
  FILE *fromChild = 0;            /* FILE for reading from child */
  int pidChild = 0;               /* Process id of the child */
  int rc;                         /* Reply code from subroutine call */
  int nContent = -1;              /* Content length */
  const char *zPathInfo;          /* Original PATH_INFO value */
  Blob reply;                     /* The reply */
  char zLine[1000];               /* One line of the CGI reply */
  const char *zSrvSw;             /* SERVER_SOFTWARE */

  zPathInfo = P("PATH_INFO");
  login_check_credentials();
  blob_init(&reply, 0, 0);
  if( g.zExtRoot==0 ){
    zFailReason = "extroot is not set";
    goto ext_not_found;
  }
  if( file_is_absolute_path(g.zExtRoot)==0 ){
    zFailReason = "extroot is a relative pathname";
    goto ext_not_found;
  }
  if( zName==0 ){
    zFailReason = "no path beyond /ext";
    goto ext_not_found;
  }
  zFailReason = ext_pathname_ok(zName);
  if( zFailReason ) goto ext_not_found;
  zFailReason = "???";
  if( file_isdir(g.zExtRoot,ExtFILE)!=1 ){
    zFailReason = "extroot is not a directory";
    goto ext_not_found;
  }
  zPath = mprintf("%s/%s", g.zExtRoot, zName);
  nRoot = (int)strlen(g.zExtRoot);
  if( file_isfile(zPath, ExtFILE) || isDirWithIndexFile(&zPath) ){
    nScript = (int)strlen(zPath);
    zScript = zPath;
  }else{
    for(i=nRoot+1; zPath[i]; i++){
      char c = zPath[i];
      if( c=='/' ){
        int isDir, isFile;
        zPath[i] = 0;
        isDir = file_isdir(zPath, ExtFILE);
        isFile = isDir==2 ? file_isfile(zPath, ExtFILE) : 0;
        zPath[i] = c;
        if( isDir==0 ){
          zFailReason = "path does not match any file or script";
          goto ext_not_found;
        }
        if( isFile!=0 ){
          zScript = mprintf("%.*s", i, zPath);
          nScript = i;
          break;
        }
      }
    }
  }
  if( nScript==0 ){
    zFailReason = "path does not match any file or script";
    goto ext_not_found;
  }
  assert( nScript>=nRoot+1 );
  style_set_current_page("ext/%s", &zScript[nRoot+1]);
  zMime = mimetype_from_name(zScript);
  if( zMime==0 ) zMime = "application/octet-stream";
  if( !file_isexe(zScript, ExtFILE) ){
    /* File is not executable.  Must be a regular file.  In that case,
    ** disallow extra path elements */
    if( zPath[nScript]!=0 ){
      zFailReason = "extra path elements after filename";
      goto ext_not_found;
    }
    blob_read_from_file(&reply, zScript, ExtFILE);
    document_render(&reply, zMime, zName, zName);
    return;
  }

  /* If we reach this point, that means we are dealing with an executable
  ** file name zScript.  Run that file as CGI.
  */
  cgi_replace_parameter("DOCUMENT_ROOT", g.zExtRoot);
  cgi_replace_parameter("SCRIPT_FILENAME", zScript);
  cgi_replace_parameter("SCRIPT_NAME",
        mprintf("%T/ext/%T",g.zTop,zScript+nRoot+1));
  cgi_replace_parameter("SCRIPT_DIRECTORY", file_dirname(zScript));
  cgi_replace_parameter("PATH_INFO", zName + strlen(zScript+nRoot+1));
  if( g.zLogin ){
    cgi_replace_parameter("REMOTE_USER", g.zLogin);
    cgi_set_parameter_nocopy("FOSSIL_USER", g.zLogin, 0);
  }
  cgi_set_parameter_nocopy("FOSSIL_NONCE", style_nonce(), 0);
  cgi_set_parameter_nocopy("FOSSIL_REPOSITORY", g.zRepositoryName, 0);
  cgi_set_parameter_nocopy("FOSSIL_URI", g.zTop, 0);
  cgi_set_parameter_nocopy("FOSSIL_CAPABILITIES",
     db_text("","SELECT fullcap(cap) FROM user WHERE login=%Q",
             g.zLogin ? g.zLogin : "nobody"), 0);
  zSrvSw = P("SERVER_SOFTWARE");
  if( zSrvSw==0 ){
    zSrvSw = get_version();
  }else{
    char *z = mprintf("fossil version %s", get_version());
    if( strncmp(zSrvSw,z,strlen(z)-4)!=0 ){
      zSrvSw = mprintf("%z, %s", z, zSrvSw);
    }
  }
  cgi_replace_parameter("SERVER_SOFTWARE", zSrvSw);
  cgi_replace_parameter("GATEWAY_INTERFACE","CGI/1.0");
  for(i=0; i<(int)(sizeof(azCgiEnv)/sizeof(azCgiEnv[0])); i++){
    (void)P(azCgiEnv[i]);
  }
  fossil_clearenv();
  for(i=0; i<(int)(sizeof(azCgiEnv)/sizeof(azCgiEnv[0])); i++){
    const char *zVal = P(azCgiEnv[i]);
    if( zVal ) fossil_setenv(azCgiEnv[i], zVal);
  }
  fossil_setenv("HTTP_ACCEPT_ENCODING","");
  rc = popen2(zScript, &fdFromChild, &toChild, &pidChild, 1);
  if( rc ){
    zFailReason = "cannot exec CGI child process";
    goto ext_not_found;
  }
  fromChild = fdopen(fdFromChild, "rb");
  if( fromChild==0 ){
    zFailReason = "cannot open FILE to read from CGI child process";
    goto ext_not_found;
  }
  if( blob_size(&g.cgiIn)>0 ){
    size_t nSent, toSend;
    unsigned char *data = (unsigned char*)blob_buffer(&g.cgiIn);
    toSend = (size_t)blob_size(&g.cgiIn);
    do{
      nSent = fwrite(data, 1, toSend, toChild);
      if( nSent<=0 ){
        zFailReason = "unable to send all content to the CGI child process";
        goto ext_not_found;
      }
      toSend -= nSent;
      data += nSent;
    }while( toSend>0 );
    fflush(toChild);
  }
  if( g.perm.Debug && P("fossil-ext-debug")!=0 ){
    /* For users with Debug privilege, if the "fossil-ext-debug" query
    ** parameter exists, then show raw output from the CGI */
    zMime = "text/plain";
  }else{
    while( fgets(zLine,sizeof(zLine),fromChild) ){
      for(i=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){}
      zLine[i] = 0;
      if( i==0 ) break;
      if( fossil_strnicmp(zLine,"Location:",9)==0 ){
        fclose(fromChild);
        fclose(toChild);
        cgi_redirect(&zLine[10]); /* no return */
      }else if( fossil_strnicmp(zLine,"Status:",7)==0 ){
        int j;
        for(i=7; fossil_isspace(zLine[i]); i++){}
        for(j=i; fossil_isdigit(zLine[j]); j++){}
        while( fossil_isspace(zLine[j]) ){ j++; }
        cgi_set_status(atoi(&zLine[i]), &zLine[j]);
      }else if( fossil_strnicmp(zLine,"Content-Length:",15)==0 ){
        nContent = atoi(&zLine[15]);
      }else if( fossil_strnicmp(zLine,"Content-Type:",13)==0 ){
        int j;
        for(i=13; fossil_isspace(zLine[i]); i++){}
        for(j=i; zLine[j] && zLine[j]!=';'; j++){}
        zMime = mprintf("%.*s", j-i, &zLine[i]);
      }else{
        cgi_append_header(zLine);
        cgi_append_header("\r\n");
      }
    }
  }
  blob_read_from_channel(&reply, fromChild, nContent);
  zFailReason = 0;  /* Indicate success */

ext_not_found:
  fossil_free(zPath);
  if( fromChild ){
    fclose(fromChild);
  }else if( fdFromChild>2 ){
    close(fdFromChild);
  }
  if( toChild ) fclose(toChild);
  if( zFailReason==0 ){
    document_render(&reply, zMime, zName, zName);
  }else{
    cgi_set_status(404, "Not Found");
    @ <h1>Not Found</h1>
    @ <p>Page not found: %h(zPathInfo)</p>
    if( g.perm.Debug ){
      @ <p>Reason for failure: %h(zFailReason)</p>
    }
  }
  return;
}

/*
** Create a temporary SFILE table and fill it with one entry for each file
** in the extension document root directory (g.zExtRoot).  The SFILE table
** looks like this:
**
**    CREATE TEMP TABLE sfile(
**      pathname TEXT PRIMARY KEY,
**      isexe BOOLEAN
**    ) WITHOUT ROWID;
*/
void ext_files(void){
  Blob base;
  db_multi_exec(
     "CREATE TEMP TABLE sfile(\n"
     "  pathname TEXT PRIMARY KEY,\n"
     "  isexe BOOLEAN\n"
     ") WITHOUT ROWID;"
  );
  blob_init(&base, g.zExtRoot, -1);
  vfile_scan(&base, blob_size(&base),
             SCAN_ALL|SCAN_ISEXE,
             0, 0, ExtFILE);
  blob_zero(&base);
}

/*
** WEBPAGE: extfilelist
**
** List all files in the extension CGI document root and its subfolders.
*/
void ext_filelist_page(void){
  Stmt q;
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  ext_files();
  style_set_current_feature("extcgi");
  style_header("CGI Extension Filelist");
  @ <table border="0" cellspacing="0" cellpadding="3">
  @ <tbody>
  db_prepare(&q, "SELECT pathname, isexe FROM sfile"
                 " ORDER BY pathname");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q,0);
    int isExe = db_column_int(&q,1);
    @ <tr>
    if( ext_pathname_ok(zName)!=0 ){
      @ <td><span style="opacity:0.5;">%h(zName)</span></td>
      @ <td>data file</td>
    }else{
      @ <td><a href="%R/ext/%h(zName)">%h(zName)</a></td>
      if( isExe ){
        @ <td>CGI</td>
      }else{
        @ <td>static content</td>
      }
    }
    @ </tr>
  }
  db_finalize(&q);
  @ </tbody>
  @ </table>
  style_finish_page();
}
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664
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831
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837
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841
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856
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1003
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1009
1010
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1017
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1020
1021
1022
1023
1024
1025
1026
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1030
1031
1032
1033
1034
1035

1036
1037
1038
1039
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1048

1049
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1053
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1058
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1081
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1102

1103
1104
1105
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1107
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1110
1111
1112
1113
1114
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1116
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1118
1119

1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
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1132
1133
1134
1135
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1160
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1164



1165
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1174
1175
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1177
1178
1179
1180
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1184


1185
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1189
1190
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1198
1199
1200
1201

1202
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1212
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1219
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1234
1235
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1316
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1318





1319

1320
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1322
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1681
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1735
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1747
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1756
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1759
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1765
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1790
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1800
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1804
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1814
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1824
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1829


1830
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1843
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1880
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1934
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** File utilities
** File utilities.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include "file.h"

/*
** On Windows, include the Platform SDK header file.
*/
#ifdef _WIN32
# include <direct.h>
# include <windows.h>
# include <sys/utime.h>
#else
# include <sys/time.h>
# include <pwd.h>
# include <grp.h>
#endif

#if INTERFACE

/* Many APIs take an eFType argument which must be one of ExtFILE, RepoFILE,
** or SymFILE.
**
** The difference is in the handling of symbolic links.  RepoFILE should be
** used for files that are under management by a Fossil repository.  ExtFILE
** should be used for files that are not under management.  SymFILE is for
** a few special cases such as the "fossil test-tarball" command when we never
** want to follow symlinks.
**
**   ExtFILE      Symbolic links always refer to the object to which the
**                link points.  Symlinks are never recognized as symlinks but
**                instead always appear to the the target object.
**
**   SymFILE      Symbolic links always appear to be files whose name is
**                the target pathname of the symbolic link.
**
**   RepoFILE     Like SymFILE if allow-symlinks is true, or like
**                ExtFILE if allow-symlinks is false.  In other words,
**                symbolic links are only recognized as something different
**                from files or directories if allow-symlinks is true.
*/
#include <stdlib.h>
#define ExtFILE    0  /* Always follow symlinks */
#define RepoFILE   1  /* Follow symlinks if and only if allow-symlinks is OFF */
#define SymFILE    2  /* Never follow symlinks */

#include <dirent.h>
#if defined(_WIN32)
# define DIR _WDIR
# define dirent _wdirent
# define opendir _wopendir
# define readdir _wreaddir
# define closedir _wclosedir
#endif /* _WIN32 */

#if defined(_WIN32) && (defined(__MSVCRT__) || defined(_MSC_VER))
/*
** File status information for windows systems.
*/
struct fossilStat {
    i64 st_size;
    i64 st_mtime;
    int st_mode;
};
#endif

#if defined(_WIN32) || defined(__CYGWIN__)
# define fossil_isdirsep(a)    (((a) == '/') || ((a) == '\\'))
#else
# define fossil_isdirsep(a)    ((a) == '/')
#endif

#endif /* INTERFACE */

#if !defined(_WIN32) || !(defined(__MSVCRT__) || defined(_MSC_VER))
/*
** The file status information from the most recent stat() call.
** File status information for unix systems
*/
# define fossilStat stat
#endif

/*
** On Windows S_ISLNK always returns FALSE.
*/
#if !defined(S_ISLNK)
# define S_ISLNK(x) (0)
#endif

/*
** Local state information for the file status routines
*/
static struct stat fileStat;
static int fileStatValid = 0;

static struct {
  struct fossilStat fileStat;  /* File status from last fossil_stat() */
  int fileStatValid;           /* True if fileStat is valid */
} fx;

/*
** Fill *buf with information about zFilename.
**
** If zFilename refers to a symbolic link:
**
**  (A) If allow-symlinks is on and eFType is RepoFILE, then fill
**      *buf with information about the symbolic link itself.
**
**  (B) If allow-symlinks is off or eFType is ExtFILE, then fill
**      *buf with information about the object that the symbolic link
**      points to.
*/
static int fossil_stat(
  const char *zFilename,  /* name of file or directory to inspect. */
  struct fossilStat *buf, /* pointer to buffer where info should go. */
  int eFType              /* Look at symlink itself if RepoFILE and enabled. */
){
  int rc;
  void *zMbcs = fossil_utf8_to_path(zFilename, 0);
#if !defined(_WIN32)
  if( (eFType==RepoFILE && db_allow_symlinks())
   || eFType==SymFILE ){
    /* Symlinks look like files whose content is the name of the target */
    rc = lstat(zMbcs, buf);
  }else{
    /* Symlinks look like the object to which they point */
    rc = stat(zMbcs, buf);
  }
#else
  rc = win32_stat(zMbcs, buf, eFType);
#endif
  fossil_path_free(zMbcs);
  return rc;
}

/*
** Clears the fx.fileStat variable and its associated validity flag.
*/
static void resetStat(){
  fx.fileStatValid = 0;
  memset(&fx.fileStat, 0, sizeof(struct fossilStat));
}

/*
** Fill in the fileStat variable for the file named zFilename.
** If zFilename==0, then use the previous value of fileStat if
** Fill in the fx.fileStat variable for the file named zFilename.
** If zFilename==0, then use the previous value of fx.fileStat if
** there is a previous value.
**
** Return the number of errors.  No error messages are generated.
*/
static int getStat(const char *zFilename){
static int getStat(const char *zFilename, int eFType){
  int rc = 0;
  if( zFilename==0 ){
    if( fileStatValid==0 ) rc = 1;
    if( fx.fileStatValid==0 ) rc = 1;
  }else{
    if( stat(zFilename, &fileStat)!=0 ){
      fileStatValid = 0;
    if( fossil_stat(zFilename, &fx.fileStat, eFType)!=0 ){
      fx.fileStatValid = 0;
      rc = 1;
    }else{
      fileStatValid = 1;
      fx.fileStatValid = 1;
      rc = 0;
    }
  }
  return rc;
}


/*
** Return the size of a file in bytes.  Return -1 if the file does not
** exist.  If zFilename is NULL, return the size of the most recently
** stat-ed file.
*/
i64 file_size(const char *zFilename){
  return getStat(zFilename) ? -1 : fileStat.st_size;
i64 file_size(const char *zFilename, int eFType){
  return getStat(zFilename, eFType) ? -1 : fx.fileStat.st_size;
}

/*
** Return the modification time for a file.  Return -1 if the file
** does not exist.  If zFilename is NULL return the size of the most
** recently stat-ed file.
*/
i64 file_mtime(const char *zFilename){
  return getStat(zFilename) ? -1 : fileStat.st_mtime;
i64 file_mtime(const char *zFilename, int eFType){
  return getStat(zFilename, eFType) ? -1 : fx.fileStat.st_mtime;
}

/*
** Return the mode bits for a file.  Return -1 if the file does not
** exist.  If zFilename is NULL return the size of the most recently
** stat-ed file.
*/
int file_mode(const char *zFilename, int eFType){
  return getStat(zFilename, eFType) ? -1 : (int)(fx.fileStat.st_mode);
}

/*
** Return TRUE if either of the following are true:
**
**   (1) zFilename is an ordinary file
**
**   (2) allow_symlinks is on and zFilename is a symbolic link to
**       a file, directory, or other object
*/
int file_isfile_or_link(const char *zFilename){
  if( getStat(zFilename, RepoFILE) ){
    return 0;  /* stat() failed.  Return false. */
  }
  return S_ISREG(fx.fileStat.st_mode) || S_ISLNK(fx.fileStat.st_mode);
}

/*
** Return TRUE if the named file is an ordinary file.  Return false
** for directories, devices, fifos, symlinks, etc.
*/
int file_isfile(const char *zFilename){
  return getStat(zFilename) ? 0 : S_ISREG(fileStat.st_mode);
int file_isfile(const char *zFilename, int eFType){
  return getStat(zFilename, eFType) ? 0 : S_ISREG(fx.fileStat.st_mode);
}

/*
** Return TRUE if zFilename is a socket.
*/
int file_issocket(const char *zFilename){
#ifdef _WIN32
  return 0;
#else
  if( getStat(zFilename, ExtFILE) ){
    return 0;  /* stat() failed.  Return false. */
  }
  return S_ISSOCK(fx.fileStat.st_mode);
#endif
}

/*
** Create a symbolic link named zLinkFile that points to zTargetFile.
**
** If allow-symlinks is off, create an ordinary file named zLinkFile
** with the name of zTargetFile as its content.
**/
void symlink_create(const char *zTargetFile, const char *zLinkFile){
#if !defined(_WIN32)
  if( db_allow_symlinks() ){
    int i, nName;
    char *zName, zBuf[1000];

    nName = strlen(zLinkFile);
    if( nName>=(int)sizeof(zBuf) ){
      zName = mprintf("%s", zLinkFile);
    }else{
      zName = zBuf;
      memcpy(zName, zLinkFile, nName+1);
    }
    nName = file_simplify_name(zName, nName, 0);
    for(i=1; i<nName; i++){
      if( zName[i]=='/' ){
        zName[i] = 0;
        if( file_mkdir(zName, ExtFILE, 1) ){
          fossil_fatal_recursive("unable to create directory %s", zName);
          return;
        }
        zName[i] = '/';
      }
    }
    if( symlink(zTargetFile, zName)!=0 ){
      fossil_fatal_recursive("unable to create symlink \"%s\"", zName);
    }
    if( zName!=zBuf ) free(zName);
  }else
#endif
  {
    Blob content;
    blob_set(&content, zTargetFile);
    blob_write_to_file(&content, zLinkFile);
    blob_reset(&content);
  }
}

/*
** Copy symbolic link from zFrom to zTo.
*/
void symlink_copy(const char *zFrom, const char *zTo){
  Blob content;
  blob_read_link(&content, zFrom);
  symlink_create(blob_str(&content), zTo);
  blob_reset(&content);
}

/*
** Return file permissions (normal, executable, or symlink):
**   - PERM_EXE on Unix if file is executable;
**   - PERM_LNK on Unix if file is symlink and allow-symlinks option is on;
**   - PERM_REG for all other cases (regular file, directory, fifo, etc).
**
** If eFType is ExtFile then symbolic links are followed and so this
** routine can only return PERM_EXE and PERM_REG.
**
** On windows, this routine returns only PERM_REG.
*/
int file_perm(const char *zFilename, int eFType){
#if !defined(_WIN32)
  if( !getStat(zFilename, eFType) ){
     if( S_ISREG(fx.fileStat.st_mode) && ((S_IXUSR)&fx.fileStat.st_mode)!=0 )
      return PERM_EXE;
    else if( db_allow_symlinks() && S_ISLNK(fx.fileStat.st_mode) )
      return PERM_LNK;
  }
#endif
  return PERM_REG;
}

/*
** Return TRUE if the named file is an executable.  Return false
** for directories, devices, fifos, symlinks, etc.
*/
int file_isexe(const char *zFilename){
  if( getStat(zFilename) || !S_ISREG(fileStat.st_mode) ) return 0;
#ifdef __MINGW32__
  return ((S_IXUSR)&fileStat.st_mode)!=0;
#else
  return ((S_IXUSR|S_IXGRP|S_IXOTH)&fileStat.st_mode)!=0;
#endif
}

int file_isexe(const char *zFilename, int eFType){
  return file_perm(zFilename, eFType)==PERM_EXE;
}

/*
** Return TRUE if the named file is a symlink and symlinks are allowed.
** Return false for all other cases.
**
** This routines assumes RepoFILE - that zFilename is always a file
** under management.
**
** On Windows, always return False.
*/
int file_islink(const char *zFilename){
  return file_perm(zFilename, RepoFILE)==PERM_LNK;
}

/*
** Check every sub-directory of zRoot along the path to zFile.
** If any sub-directory is really an ordinary file or a symbolic link,
** return an integer which is the length of the prefix of zFile which
** is the name of that object.  Return 0 if all no non-directory
** objects are found along the path.
**
** Example:  Given inputs
**
**     zRoot = /home/alice/project1
**     zFile = /home/alice/project1/main/src/js/fileA.js
**
** Look for objects in the following order:
**
**      /home/alice/project/main
**      /home/alice/project/main/src
**      /home/alice/project/main/src/js
**
** If any of those objects exist and are something other than a directory
** then return the length of the name of the first non-directory object
** seen.
*/
int file_nondir_objects_on_path(const char *zRoot, const char *zFile){
  int i = (int)strlen(zRoot);
  char *z = fossil_strdup(zFile);
  assert( fossil_strnicmp(zRoot, z, i)==0 );
  if( i && zRoot[i-1]=='/' ) i--;
  while( z[i]=='/' ){
    int j, rc;
    for(j=i+1; z[j] && z[j]!='/'; j++){}
    if( z[j]!='/' ) break;
    z[j] = 0;
    rc = file_isdir(z, SymFILE);
    if( rc!=1 ){
      if( rc==2 ){
        fossil_free(z);
        return j;
      }
      break;
    }
    z[j] = '/';
    i = j;
  }
  fossil_free(z);
  return 0;
}

/*
** The file named zFile is suppose to be an in-tree file.  Check to
** ensure that it will be safe to write to this file by verifying that
** there are no symlinks or other non-directory objects in between the
** root of the check-out and zFile.
**
** If a problem is found, print a warning message (using fossil_warning())
** and return non-zero.  If everything is ok, return zero.
*/
int file_unsafe_in_tree_path(const char *zFile){
  int n;
  if( !file_is_absolute_path(zFile) ){
    fossil_fatal("%s is not an absolute pathname",zFile);
  }
  if( fossil_strnicmp(g.zLocalRoot, zFile, (int)strlen(g.zLocalRoot)) ){
    fossil_fatal("%s is not a prefix of %s", g.zLocalRoot, zFile);
  }
  n = file_nondir_objects_on_path(g.zLocalRoot, zFile);
  if( n ){
    fossil_warning("cannot write to %s because non-directory object %.*s"
                   " is in the way", zFile, n, zFile);
  }
  return n;
}

/*
** Return 1 if zFilename is a directory.  Return 0 if zFilename
** does not exist.  Return 2 if zFilename exists but is something
** other than a directory.
*/
int file_isdir(const char *zFilename){
int file_isdir(const char *zFilename, int eFType){
  int rc;
  char *zFN;

  zFN = mprintf("%s", zFilename);
  file_simplify_name(zFN, -1, 0);
  rc = getStat(zFN, eFType);
  if( rc ){
    rc = 0; /* It does not exist at all. */
  }else if( S_ISDIR(fx.fileStat.st_mode) ){
    rc = 1; /* It exists and is a real directory. */
  }else{
    rc = 2; /* It exists and is something else. */
  }
  free(zFN);
  return rc;
}

/*
** Return true (1) if zFilename seems like it seems like a valid
** repository database.
*/
int file_is_repository(const char *zFilename){
  i64 sz;
  sqlite3 *db = 0;
  sqlite3_stmt *pStmt = 0;
  int rc;
  int i;
  static const char *azReqTab[] = {
     "blob", "delta", "rcvfrom", "user", "config"
  };
  if( !file_isfile(zFilename, ExtFILE) ) return 0;
  sz = file_size(zFilename, ExtFILE);
  if( sz<35328 ) return 0;
  if( sz%512!=0 ) return 0;
  rc = sqlite3_open_v2(zFilename, &db,
          SQLITE_OPEN_READWRITE, 0);
  if( rc!=0 ) goto not_a_repo;
  for(i=0; i<count(azReqTab); i++){
    if( sqlite3_table_column_metadata(db, "main", azReqTab[i],0,0,0,0,0,0) ){
      goto not_a_repo;
    }
  }
  rc = sqlite3_prepare_v2(db, "SELECT 1 FROM config WHERE name='project-code'",
                          -1, &pStmt, 0);
  if( rc ) goto not_a_repo;
  rc = sqlite3_step(pStmt);
  if( rc!=SQLITE_ROW ) goto not_a_repo;
  sqlite3_finalize(pStmt);
  sqlite3_close(db);
  return 1;

not_a_repo:
  sqlite3_finalize(pStmt);
  sqlite3_close(db);
  return 0;
}


/*
** Wrapper around the access() system call.
*/
int file_access(const char *zFilename, int flags){
  int rc;
  void *zMbcs = fossil_utf8_to_path(zFilename, 0);
#ifdef _WIN32
  rc = win32_access(zMbcs, flags);
#else
  rc = access(zMbcs, flags);
#endif
  fossil_path_free(zMbcs);
  return rc;
}

/*
** Wrapper around the chdir() system call.
** If bChroot=1, do a chroot to this dir as well
** (UNIX only)
*/
int file_chdir(const char *zChDir, int bChroot){
  int rc;
  void *zPath = fossil_utf8_to_path(zChDir, 1);
#ifdef _WIN32
  rc = win32_chdir(zPath, bChroot);
#else
  rc = chdir(zPath);
  if( !rc && bChroot ){
    rc = chroot(zPath);
    if( !rc ) rc = chdir("/");
    g.fJail = 1;

  if( zFilename ){
    char *zFN = mprintf("%s", zFilename);
    file_simplify_name(zFN, -1);
  }
#endif
  fossil_path_free(zPath);
  return rc;
}

/*
** Find an unused filename similar to zBase with zSuffix appended.
**
** Make the name relative to the working directory if relFlag is true.
**
** Space to hold the new filename is obtained form mprintf() and should
** be freed by the caller.
*/
char *file_newname(const char *zBase, const char *zSuffix, int relFlag){
  char *z = 0;
  int cnt = 0;
  z = mprintf("%s-%s", zBase, zSuffix);
  while( file_size(z, ExtFILE)>=0 ){
    rc = getStat(zFN);
    free(zFN);
  }else{
    rc = getStat(0);
    fossil_free(z);
    z = mprintf("%s-%s-%d", zBase, zSuffix, cnt++);
  }
  if( relFlag ){
    Blob x;
    file_relative_name(z, &x, 0);
    fossil_free(z);
    z = blob_str(&x);
  }
  return rc ? 0 : (S_ISDIR(fileStat.st_mode) ? 1 : 2);
  return z;
}

/*
** Return the tail of a file pathname.  The tail is the last component
** of the path.  For example, the tail of "/a/b/c.d" is "c.d".
*/
const char *file_tail(const char *z){
  const char *zTail = z;
  if( !zTail ) return 0;
  while( z[0] ){
    if( z[0]=='/' ) zTail = &z[1];
    if( fossil_isdirsep(z[0]) ) zTail = &z[1];
    z++;
  }
  return zTail;
}

/*
** Return the directory of a file path name.  The directory is all components
** except the last one.  For example, the directory of "/a/b/c.d" is "/a/b".
** If there is no directory, NULL is returned; otherwise, the returned memory
** should be freed via fossil_free().
*/
char *file_dirname(const char *z){
  const char *zTail = file_tail(z);
  if( zTail && zTail!=z ){
    return mprintf("%.*s", (int)(zTail-z-1), z);
  }else{
    return 0;
  }
}

/* SQL Function:  file_dirname(NAME)
**
** Return the directory for NAME
*/
void file_dirname_sql_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zName = (const char*)sqlite3_value_text(argv[0]);
  char *zDir;
  if( zName==0 ) return;
  zDir = file_dirname(zName);
  if( zDir ){
    sqlite3_result_text(context,zDir,-1,fossil_free);
  }
}


/*
** Rename a file or directory.
** Returns zero upon success.
*/
int file_rename(
  const char *zFrom,
  const char *zTo,
  int isFromDir,
  int isToDir
){
  int rc;
#if defined(_WIN32)
  wchar_t *zMbcsFrom = fossil_utf8_to_path(zFrom, isFromDir);
  wchar_t *zMbcsTo = fossil_utf8_to_path(zTo, isToDir);
  rc = _wrename(zMbcsFrom, zMbcsTo);
#else
  char *zMbcsFrom = fossil_utf8_to_path(zFrom, isFromDir);
  char *zMbcsTo = fossil_utf8_to_path(zTo, isToDir);
  rc = rename(zMbcsFrom, zMbcsTo);
#endif
  fossil_path_free(zMbcsTo);
  fossil_path_free(zMbcsFrom);
  return rc;
}

/*
** Copy the content of a file from one place to another.
*/
void file_copy(const char *zFrom, const char *zTo){
  FILE *in, *out;
  int got;
  char zBuf[8192];
  in = fopen(zFrom, "rb");
  in = fossil_fopen(zFrom, "rb");
  if( in==0 ) fossil_fatal("cannot open \"%s\" for reading", zFrom);
  file_mkfolder(zTo, ExtFILE, 0, 0);
  out = fopen(zTo, "wb");
  out = fossil_fopen(zTo, "wb");
  if( out==0 ) fossil_fatal("cannot open \"%s\" for writing", zTo);
  while( (got=fread(zBuf, 1, sizeof(zBuf), in))>0 ){
    fwrite(zBuf, 1, got, out);
  }
  fclose(in);
  fclose(out);
  if( file_isexe(zFrom, ExtFILE) ) file_setexe(zTo, 1);
}

/*
** COMMAND: test-file-copy
**
** Usage: %fossil test-file-copy SOURCE DESTINATION
**
** Make a copy of the file at SOURCE into a new name DESTINATION.  Any
** directories in the path leading up to DESTINATION that do not already
** exist are created automatically.
*/
void test_file_copy(void){
  if( g.argc!=4 ){
    fossil_fatal("Usage: %s test-file-copy SOURCE DESTINATION", g.argv[0]);
  }
  file_copy(g.argv[2], g.argv[3]);
}

/*
** Set or clear the execute bit on a file.
** Set or clear the execute bit on a file.  Return true if a change
** occurred and false if this routine is a no-op.
**
** This routine assumes RepoFILE as the eFType.  In other words, if
** zFilename is a symbolic link, it is the object that zFilename points
** to that is modified.
*/
void file_setexe(const char *zFilename, int onoff){
#ifndef __MINGW32__
int file_setexe(const char *zFilename, int onoff){
  int rc = 0;
#if !defined(_WIN32)
  struct stat buf;
  if( stat(zFilename, &buf)!=0 ) return;
  if( fossil_stat(zFilename, &buf, RepoFILE)!=0
   || S_ISLNK(buf.st_mode)
   || S_ISDIR(buf.st_mode)
  ){
    return 0;
  }
  if( onoff ){
    int targetMode = (buf.st_mode & 0444)>>2;
    if( (buf.st_mode & 0111)!=0111 ){
      chmod(zFilename, buf.st_mode | 0111);
    if( (buf.st_mode & 0100)==0 ){
      chmod(zFilename, buf.st_mode | targetMode);
      rc = 1;
    }
  }else{
    if( (buf.st_mode & 0111)!=0 ){
    if( (buf.st_mode & 0100)!=0 ){
      chmod(zFilename, buf.st_mode & ~0111);
      rc = 1;
    }
  }
#endif /* __MINGW32__ */
#endif /* _WIN32 */
  return rc;
}

/*
** Set the mtime for a file.
*/
void file_set_mtime(const char *zFilename, i64 newMTime){
#if !defined(_WIN32)
  char *zMbcs;
  struct timeval tv[2];
  memset(tv, 0, sizeof(tv[0])*2);
  tv[0].tv_sec = newMTime;
  tv[1].tv_sec = newMTime;
  zMbcs = fossil_utf8_to_path(zFilename, 0);
  utimes(zMbcs, tv);
#else
  struct _utimbuf tb;
  wchar_t *zMbcs = fossil_utf8_to_path(zFilename, 0);
  tb.actime = newMTime;
  tb.modtime = newMTime;
  _wutime(zMbcs, &tb);
#endif
  fossil_path_free(zMbcs);
}

/*
** COMMAND: test-set-mtime
**
** Usage: %fossil test-set-mtime FILENAME DATE/TIME
**
** Sets the mtime of the named file to the date/time shown.
*/
void test_set_mtime(void){
  const char *zFile;
  char *zDate;
  i64 iMTime;
  if( g.argc!=4 ){
    usage("FILENAME DATE/TIME");
  }
  db_open_or_attach(":memory:", "mem");
  iMTime = db_int64(0, "SELECT strftime('%%s',%Q)", g.argv[3]);
  zFile = g.argv[2];
  file_set_mtime(zFile, iMTime);
  iMTime = file_mtime(zFile, RepoFILE);
  zDate = db_text(0, "SELECT datetime(%lld, 'unixepoch')", iMTime);
  fossil_print("Set mtime of \"%s\" to %s (%lld)\n", zFile, zDate, iMTime);
}

/*
** Change access permissions on a file.
*/
void file_set_mode(const char *zFN, int fd, const char *zMode, int bNoErr){
#if !defined(_WIN32)
  mode_t m;
  char *zEnd = 0;
  m = strtol(zMode, &zEnd, 0);
  if( (zEnd[0] || fchmod(fd, m)) && !bNoErr ){
    fossil_fatal("cannot change permissions on %s to \"%s\"",
                 zFN, zMode);
  }
#endif
}

/* Change the owner of a file to zOwner.  zOwner can be of the form
** USER:GROUP.
*/
void file_set_owner(const char *zFN, int fd, const char *zOwner){
#if !defined(_WIN32)
  const char *zGrp;
  const char *zUsr = zOwner;
  struct passwd *pw;
  struct group *grp;
  uid_t uid = -1;
  gid_t gid = -1;
  zGrp = strchr(zUsr, ':');
  if( zGrp ){
    int n = (int)(zGrp - zUsr);
    zUsr = fossil_strndup(zUsr, n);
    zGrp++;
  }
  pw = getpwnam(zUsr);
  if( pw==0 ){
    fossil_fatal("no such user: \"%s\"", zUsr);
  }
  uid = pw->pw_uid;
  if( zGrp ){
    grp = getgrnam(zGrp);
    if( grp==0 ){
      fossil_fatal("no such group: \"%s\"", zGrp);
    }
    gid = grp->gr_gid;
  }
  if( chown(zFN, uid, gid) ){
    fossil_fatal("cannot change ownership of %s to %s",zFN, zOwner);
  }
  if( zOwner!=zUsr ){
    fossil_free((char*)zUsr);
  }
#endif
}


/*
** Delete a file.
**
** If zFilename is a symbolic link, then it is the link itself that is
** removed, not the object that zFilename points to.
**
** Returns zero upon success.
*/
int file_delete(const char *zFilename){
  int rc;
#ifdef _WIN32
  wchar_t *z = fossil_utf8_to_path(zFilename, 0);
  rc = _wunlink(z);
#else
  char *z = fossil_utf8_to_path(zFilename, 0);
  rc = unlink(zFilename);
#endif
  fossil_path_free(z);
  return rc;
}

/* SQL Function:  file_delete(NAME)
**
** Remove file NAME.  Return zero on success and non-zero if anything goes
** wrong.
*/
void file_delete_sql_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zName = (const char*)sqlite3_value_text(argv[0]);
  int rc;
  if( zName==0 ){
    rc = 1;
  }else{
    rc = file_delete(zName);
  }
  sqlite3_result_int(context, rc);
}

/*
** Create the directory named in the argument, if it does not already
** exist.  If forceFlag is 1, delete any prior non-directory object 
** Create a directory called zName, if it does not already exist.
** If forceFlag is 1, delete any prior non-directory object
** with the same name.
**
** Return the number of errors.
*/
int file_mkdir(const char *zName, int forceFlag){
  int rc = file_isdir(zName);
int file_mkdir(const char *zName, int eFType, int forceFlag){
  int rc = file_isdir(zName, eFType);
  if( rc==2 ){
    if( !forceFlag ) return 1;
    unlink(zName);
    file_delete(zName);
  }
  if( rc!=1 ){
#if defined(_WIN32)
    wchar_t *zMbcs = fossil_utf8_to_path(zName, 1);
    rc = _wmkdir(zMbcs);
#else
    char *zMbcs = fossil_utf8_to_path(zName, 1);
    rc = mkdir(zMbcs, 0755);
#endif
    fossil_path_free(zMbcs);
    return rc;
  }
  return 0;
}
#ifdef __MINGW32__
    return mkdir(zName);

/*
** Create the tree of directories in which zFilename belongs, if that sequence
** of directories does not already exist.
**
** On success, return zero.  On error, return errorReturn if positive, otherwise
** print an error message and abort.
*/
int file_mkfolder(
  const char *zFilename,   /* Pathname showing directories to be created */
  int eFType,              /* Follow symlinks if ExtFILE */
  int forceFlag,           /* Delete non-directory objects in the way */
  int errorReturn          /* What to do when an error is seen */
){
  int nName, rc = 0;
  char *zName;

  nName = strlen(zFilename);
  zName = mprintf("%s", zFilename);
  nName = file_simplify_name(zName, nName, 0);
  while( nName>0 && zName[nName-1]!='/' ){ nName--; }
  if( nName>1 ){
    zName[nName-1] = 0;
    if( file_isdir(zName, eFType)!=1 ){
      rc = file_mkfolder(zName, eFType, forceFlag, errorReturn);
      if( rc==0 ){
        if( file_mkdir(zName, eFType, forceFlag)
         && file_isdir(zName, eFType)!=1
        ){
          if( errorReturn <= 0 ){
            fossil_fatal_recursive("unable to create directory %s", zName);
          }
          rc = errorReturn;
        }
      }
    }
  }
  free(zName);
  return rc;
}

#if defined(_WIN32)
/*
** Returns non-zero if the specified name represents a real directory, i.e.
** not a junction or symbolic link.  This is important for some operations,
** e.g. removing directories via _wrmdir(), because its detection of empty
** directories will (apparently) not work right for junctions and symbolic
** links, etc.
*/
int file_is_normal_dir(wchar_t *zName){
  /*
  ** Mask off attributes, applicable to directories, that are harmless for
  ** our purposes.  This may need to be updated if other attributes should
  ** be ignored by this function.
  */
  DWORD dwAttributes = GetFileAttributesW(zName);
  if( dwAttributes==INVALID_FILE_ATTRIBUTES ) return 0;
  dwAttributes &= ~(
    FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_COMPRESSED |
    FILE_ATTRIBUTE_ENCRYPTED | FILE_ATTRIBUTE_NORMAL |
    FILE_ATTRIBUTE_NOT_CONTENT_INDEXED
  );
  return dwAttributes==FILE_ATTRIBUTE_DIRECTORY;
}

/*
** COMMAND: test-is-normal-dir
**
** Usage: %fossil test-is-normal-dir NAME...
**
** Returns non-zero if the specified names represent real directories, i.e.
** not junctions, symbolic links, etc.
*/
void test_is_normal_dir(void){
  int i;
  for(i=2; i<g.argc; i++){
    wchar_t *zMbcs = fossil_utf8_to_path(g.argv[i], 1);
    fossil_print("ATTRS \"%s\" -> %lx\n", g.argv[i], GetFileAttributesW(zMbcs));
    fossil_print("ISDIR \"%s\" -> %d\n", g.argv[i], file_is_normal_dir(zMbcs));
    fossil_path_free(zMbcs);
  }
}
#endif

/*
** Removes the directory named in the argument, if it exists.  The directory
** must be empty and cannot be the current directory or the root directory.
**
** Returns zero upon success.
*/
int file_rmdir(const char *zName){
  int rc = file_isdir(zName, RepoFILE);
  if( rc==2 ) return 1; /* cannot remove normal file */
  if( rc==1 ){
#if defined(_WIN32)
    wchar_t *zMbcs = fossil_utf8_to_path(zName, 1);
    if( file_is_normal_dir(zMbcs) ){
      rc = _wrmdir(zMbcs);
    }else{
      rc = ENOTDIR; /* junction, symbolic link, etc. */
    }
#else
    char *zMbcs = fossil_utf8_to_path(zName, 1);
    return mkdir(zName, 0755);
    rc = rmdir(zName);
#endif
    fossil_path_free(zMbcs);
    return rc;
  }
  return 0;
}

/* SQL Function: rmdir(NAME)
**
** Try to remove the directory NAME.  Return zero on success and non-zero
** for failure.
*/
void file_rmdir_sql_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zName = (const char*)sqlite3_value_text(argv[0]);
  int rc;
  if( zName==0 ){
    rc = 1;
  }else{
    rc = file_rmdir(zName);
  }
  sqlite3_result_int(context, rc);
}

/*
** Check the input argument to see if it looks like it has an prefix that
** indicates a remote file.  If so, return the tail of the specification,
** which is the name of the file on the remote system.
**
** If the input argument does not have a prefix that makes it look like
** a remote file reference, then return NULL.
**
** Remote files look like:  "HOST:PATH" or "USER@HOST:PATH".  Host must
** be a valid hostname, meaning it must follow these rules:
**
**   *  Only characters [-.a-zA-Z0-9].  No spaces or other punctuation
**   *  Does not begin or end with -
**   *  Name is two or more characters long (otherwise it might be
**      confused with a drive-letter on Windows).
**
** The USER section, if it exists, must not contain the '@' character.
*/
const char *file_skip_userhost(const char *zIn){
  const char *zTail;
  int n, i;
  if( zIn[0]==':' ) return 0;
  zTail = strchr(zIn, ':');
  if( zTail==0 ) return 0;
  if( zTail - zIn > 10000 ) return 0;
  n = (int)(zTail - zIn);
  if( n<2 ) return 0;
  if( zIn[n-1]=='-' || zIn[n-1]=='.' ) return 0;
  for(i=n-1; i>0 && zIn[i-1]!='@'; i--){
    if( !fossil_isalnum(zIn[i]) && zIn[i]!='-' && zIn[i]!='.' ) return 0;
  }
  if( zIn[i]=='-' || zIn[i]=='.' || i==1 ) return 0;
  if( i>1 ){
    i -= 2;
    while( i>=0 ){
      if( zIn[i]=='@' ) return 0;
      i--;
    }
  }
  return zTail+1;
}

/*
** Return true if the filename given is a valid filename for
** a file in a repository.  Valid filenames follow all of the
** following rules:
**
**     *  Does not begin with "/"
**     *  Does not contain any path element named "." or ".."
**     *  Does not contain any of these characters in the path: "\*[]?"
**     *  Does not contain any of these characters in the path: "\"
**     *  Does not end with "/".
**     *  Does not contain two or more "/" characters in a row.
**     *  Contains at least one character
**
** Invalid UTF8 characters result in a false return if bStrictUtf8 is
** true.  If bStrictUtf8 is false, invalid UTF8 characters are silently
** ignored. See http://en.wikipedia.org/wiki/UTF-8#Invalid_byte_sequences
** and http://en.wikipedia.org/wiki/Unicode (for the noncharacters)
**
** The bStrictUtf8 flag is true for new inputs, but is false when parsing
** legacy manifests, for backwards compatibility.
*/
int file_is_simple_pathname(const char *z){
int file_is_simple_pathname(const char *z, int bStrictUtf8){
  int i;
  unsigned char c = (unsigned char) z[0];
  char maskNonAscii = bStrictUtf8 ? 0x80 : 0x00;
  if( *z=='/' || *z==0 ) return 0;
  if( *z=='.' ){
  if( c=='/' || c==0 ) return 0;
  if( c=='.' ){
    if( z[1]=='/' || z[1]==0 ) return 0;
    if( z[1]=='.' && (z[2]=='/' || z[2]==0) ) return 0;
  }
  for(i=0; z[i]; i++){
    if( z[i]=='\\' || z[i]=='*' || z[i]=='[' || z[i]==']' || z[i]=='?' ){
  for(i=0; (c=(unsigned char)z[i])!=0; i++){
    if( c & maskNonAscii ){
      if( (z[++i]&0xc0)!=0x80 ){
        /* Invalid first continuation byte */
        return 0;
      }
      if( c<0xc2 ){
        /* Invalid 1-byte UTF-8 sequence, or 2-byte overlong form. */
        return 0;
      }else if( (c&0xe0)==0xe0 ){
        /* 3-byte or more */
        int unicode;
        if( c&0x10 ){
          /* Unicode characters > U+FFFF are not supported.
           * Windows XP and earlier cannot handle them.
           */
          return 0;
        }
        /* This is a 3-byte UTF-8 character */
        unicode = ((c&0x0f)<<12) + ((z[i]&0x3f)<<6) + (z[i+1]&0x3f);
        if( unicode <= 0x07ff ){
          /* overlong form */
          return 0;
        }else if( unicode>=0xe000 ){
          /* U+E000..U+FFFF */
          if( (unicode<=0xf8ff) || (unicode>=0xfffe) ){
            /* U+E000..U+F8FF are for private use.
             * U+FFFE..U+FFFF are noncharacters. */
            return 0;
          } else if( (unicode>=0xfdd0) && (unicode<=0xfdef) ){
            /* U+FDD0..U+FDEF are noncharacters. */
            return 0;
          }
        }else if( (unicode>=0xd800) && (unicode<=0xdfff) ){
          /* U+D800..U+DFFF are for surrogate pairs. */
          return 0;
        }
        if( (z[++i]&0xc0)!=0x80 ){
          /* Invalid second continuation byte */
          return 0;
        }
      }
    }else if( bStrictUtf8 && (c=='\\') ){
      return 0;
    }
    if( z[i]=='/' ){
    if( c=='/' ){
      if( z[i+1]=='/' ) return 0;
      if( z[i+1]=='.' ){
        if( z[i+2]=='/' || z[i+2]==0 ) return 0;
        if( z[i+2]=='.' && (z[i+3]=='/' || z[i+3]==0) ) return 0;
      }
    }
  }
  if( z[i-1]=='/' ) return 0;
  return 1;
}
int file_is_simple_pathname_nonstrict(const char *z){
  unsigned char c = (unsigned char) z[0];
  if( c=='/' || c==0 ) return 0;
  if( c=='.' ){
    if( z[1]=='/' || z[1]==0 ) return 0;
    if( z[1]=='.' && (z[2]=='/' || z[2]==0) ) return 0;

  }
  while( (z = strchr(z+1, '/'))!=0 ){
    if( z[1]=='/' ) return 0;
    if( z[1]==0 ) return 0;
    if( z[1]=='.' ){
      if( z[2]=='/' || z[2]==0 ) return 0;
      if( z[2]=='.' && (z[3]=='/' || z[3]==0) ) return 0;
    }
  }
  return 1;
}

/*
** If the last component of the pathname in z[0]..z[j-1] is something
** other than ".." then back it out and return true.  If the last
** component is empty or if it is ".." then return false.
*/
static int backup_dir(const char *z, int *pJ){
  int j = *pJ;
  int i;
  if( j<=0 ) return 0;
  for(i=j-1; i>0 && z[i-1]!='/'; i--){}
  if( z[i]=='.' && i==j-2 && z[i+1]=='.' ) return 0;
  *pJ = i-1;
  return 1;
}

/*
** Simplify a filename by
**
**  * Remove extended path prefix on windows and cygwin
**  * Convert all \ into / on windows and cygwin
**  * removing any trailing and duplicate /
**  * removing /./
**  * removing /A/../
**
** Changes are made in-place.  Return the new name length.
** If the slash parameter is non-zero, the trailing slash, if any,
** is retained.
*/
int file_simplify_name(char *z, int n){
  int i, j;
int file_simplify_name(char *z, int n, int slash){
  int i = 1, j;
  assert( z!=0 );
  if( n<0 ) n = strlen(z);
  if( n==0 ) return 0;
#ifdef __MINGW32__
  for(i=0; i<n; i++){
    if( z[i]=='\\' ) z[i] = '/';

  /* On windows and cygwin convert all \ characters to /
   * and remove extended path prefix if present */
#if defined(_WIN32) || defined(__CYGWIN__)
  for(j=0; j<n; j++){
    if( z[j]=='\\' ) z[j] = '/';
  }
  if( n>3 && !memcmp(z, "//?/", 4) ){
    if( fossil_strnicmp(z+4,"UNC", 3) ){
      i += 4;
      z[0] = z[4];
    }else{
      i += 6;
      z[0] = '/';
    }
  }
#endif

  /* Removing trailing "/" characters */
  if( !slash ){
  while( n>1 && z[n-1]=='/' ){ n--; }
  for(i=j=0; i<n; i++){
    while( n>1 && z[n-1]=='/' ){ n--; }
  }

  /* Remove duplicate '/' characters.  Except, two // at the beginning
  ** of a pathname is allowed since this is important on windows. */
  for(j=1; i<n; i++){
    z[j++] = z[i];
    while( z[i]=='/' && i<n-1 && z[i+1]=='/' ) i++;
  }
  n = j;

  /* Skip over zero or more initial "./" sequences */
  for(i=0; i<n-1 && z[i]=='.' && z[i+1]=='/'; i+=2){}

  /* Begin copying from z[i] back to z[j]... */
  for(j=0; i<n; i++){
    if( z[i]=='/' ){
      if( z[i+1]=='/' ) continue;
      /* Skip over internal "/." directory components */
      if( z[i+1]=='.' && (i+2==n || z[i+2]=='/') ){
        i += 1;
        continue;
      }

      /* If this is a "/.." directory component then back out the
      ** previous term of the directory if it is something other than ".."
      ** or "."
      */
      if( z[i+1]=='.' && i+2<n && z[i+2]=='.' && (i+3==n || z[i+3]=='/') ){
        while( j>0 && z[j-1]!='/' ){ j--; }
        if( j>0 ){ j--; }
      if( z[i+1]=='.' && i+2<n && z[i+2]=='.' && (i+3==n || z[i+3]=='/')
       && backup_dir(z, &j)
      ){
        i += 2;
        continue;
      }
    }
    z[j++] = z[i];
    if( j>=0 ) z[j] = z[i];
    j++;
  }
  if( j==0 ) z[j++] = '/';
  z[j] = 0;
  return j;
}

/*
** COMMAND: test-simplify-name
**
** Usage: %fossil test-simplify-name FILENAME...
**
** Print the simplified versions of each FILENAME.  This is used to test
** the file_simplify_name() routine.
**
** If FILENAME is of the form "HOST:PATH" or "USER@HOST:PATH", then remove
** and print the remote host prefix first.  This is used to test the
** file_skip_userhost() interface.
*/
void cmd_test_simplify_name(void){
  int i;
  char *z;
  const char *zTail;
  for(i=2; i<g.argc; i++){
    zTail = file_skip_userhost(g.argv[i]);
    if( zTail ){
      fossil_print("... ON REMOTE: %.*s\n", (int)(zTail-g.argv[i]), g.argv[i]);
      z = mprintf("%s", zTail);
    }else{
      z = mprintf("%s", g.argv[i]);
    }
    fossil_print("[%s] -> ", z);
    file_simplify_name(z, -1, 0);
    fossil_print("[%s]\n", z);
    fossil_free(z);
  }
}

/*
** Get the current working directory.
**
** On windows, the name is converted from unicode to UTF8 and all '\\'
** characters are converted to '/'.  No conversions are needed on
** unix.
**
** Store the value of the CWD in zBuf which is nBuf bytes in size.
** or if zBuf==0, allocate space to hold the result using fossil_malloc().
*/
char *file_getcwd(char *zBuf, int nBuf){
  if( zBuf==0 ){
    char zTemp[2000];
    return fossil_strdup(file_getcwd(zTemp, sizeof(zTemp)));
  }
#ifdef _WIN32
  win32_getcwd(zBuf, nBuf);
#else
  if( getcwd(zBuf, nBuf-1)==0 ){
    if( errno==ERANGE ){
      fossil_fatal("pwd too big: max %d", nBuf-1);
    }else{
      fossil_fatal("cannot find current working directory; %s",
                   strerror(errno));
    }
  }
#endif
  return zBuf;
}

/*
** Return true if zPath is an absolute pathname.  Return false
** if it is relative.
*/
int file_is_absolute_path(const char *zPath){
  if( fossil_isdirsep(zPath[0])
#if defined(_WIN32) || defined(__CYGWIN__)
      || (fossil_isalpha(zPath[0]) && zPath[1]==':'
           && (fossil_isdirsep(zPath[2]) || zPath[2]=='\0'))
#endif
  ){
    return 1;
  }else{
    return 0;
  }
}

/*
** Compute a canonical pathname for a file or directory.
** Make the name absolute if it is relative.
** Remove redundant / characters
** Remove all /./ path elements.
** Convert /A/../ to just /
** If the slash parameter is non-zero, the trailing slash, if any,
** is retained.
**
** See also: file_canonical_name_dup()
*/
void file_canonical_name(const char *zOrigName, Blob *pOut){
  if( zOrigName[0]=='/' 
void file_canonical_name(const char *zOrigName, Blob *pOut, int slash){
  blob_zero(pOut);
#ifdef __MINGW32__
      || zOrigName[0]=='\\'
  if( file_is_absolute_path(zOrigName) ){
      || (strlen(zOrigName)>3 && zOrigName[1]==':'
           && (zOrigName[2]=='\\' || zOrigName[2]=='/'))
#endif
  ){
    blob_set(pOut, zOrigName);
    blob_appendf(pOut, "%/", zOrigName);
    blob_materialize(pOut);
  }else{
    char zPwd[2000];
    if( getcwd(zPwd, sizeof(zPwd)-20)==0 ){
      fprintf(stderr, "pwd too big: max %d\n", (int)sizeof(zPwd)-20);
      exit(1);
    }
    blob_zero(pOut);
    blob_appendf(pOut, "%//%/", zPwd, zOrigName);
  }
  blob_resize(pOut, file_simplify_name(blob_buffer(pOut), blob_size(pOut)));
    file_getcwd(zPwd, sizeof(zPwd)-strlen(zOrigName));
    if( zPwd[0]=='/' && strlen(zPwd)==1 ){
      /* when on '/', don't add an extra '/' */
      if( zOrigName[0]=='.' && strlen(zOrigName)==1 ){
        /* '.' when on '/' mean '/' */
        blob_appendf(pOut, "%/", zPwd);
      }else{
        blob_appendf(pOut, "%/%/", zPwd, zOrigName);
      }
    }else{
      blob_appendf(pOut, "%//%/", zPwd, zOrigName);
    }
  }
#if defined(_WIN32) || defined(__CYGWIN__)
  {
    char *zOut;
    /*
    ** On Windows/cygwin, normalize the drive letter to upper case.
    */
    zOut = blob_str(pOut);
    if( fossil_islower(zOut[0]) && zOut[1]==':' && zOut[2]=='/' ){
      zOut[0] = fossil_toupper(zOut[0]);
    }
  }
#endif
  blob_resize(pOut, file_simplify_name(blob_buffer(pOut),
                                       blob_size(pOut), slash));
}

/*
** Compute the canonical name of a file.  Store that name in
** memory obtained from fossil_malloc() and return a pointer to the
** name.
**
** See also: file_canonical_name()
*/
char *file_canonical_name_dup(const char *zOrigName){
  Blob x;
  if( zOrigName==0 ) return 0;
  blob_init(&x, 0, 0);
  file_canonical_name(zOrigName, &x, 0);
  return blob_str(&x);
}

/*
** Convert zPath, which is a relative pathname rooted at zDir, into the
** case preferred by the underlying filesystem.  Return the a copy
** of the converted path in memory obtained from fossil_malloc().
**
** For case-sensitive filesystems, such as on Linux, this routine is
** just fossil_strdup().  But for case-insenstiive but "case preserving"
** filesystems, such as on MacOS or Windows, we want the filename to be
** in the preserved casing.  That's what this routine does.
*/
char *file_case_preferred_name(const char *zDir, const char *zPath){
#ifndef _WIN32 /* Call win32_file_case_preferred_name() on Windows. */
  DIR *d;
  int i;
  char *zResult = 0;
  void *zNative = 0;

  if( filenames_are_case_sensitive() ){
    return fossil_strdup(zPath);
  }
  for(i=0; zPath[i] && zPath[i]!='/' && zPath[i]!='\\'; i++){}
  zNative = fossil_utf8_to_path(zDir, 1);
  d = opendir(zNative);
  if( d ){
    struct dirent *pEntry;
    while( (pEntry = readdir(d))!=0 ){
      char *zUtf8 = fossil_path_to_utf8(pEntry->d_name);
      if( fossil_strnicmp(zUtf8, zPath, i)==0 && zUtf8[i]==0 ){
        if( zPath[i]==0 ){
          zResult = fossil_strdup(zUtf8);
        }else{
          char *zSubDir = mprintf("%s/%s", zDir, zUtf8);
          char *zSubPath = file_case_preferred_name(zSubDir, &zPath[i+1]);
          zResult = mprintf("%s/%s", zUtf8, zSubPath);
          fossil_free(zSubPath);
          fossil_free(zSubDir);
        }
        fossil_path_free(zUtf8);
        break;
      }
      fossil_path_free(zUtf8);
    }
    closedir(d);
  }
  fossil_path_free(zNative);
  if( zResult==0 ) zResult = fossil_strdup(zPath);
  return zResult;
#else /* !_WIN32 */
  return win32_file_case_preferred_name(zDir,zPath);
#endif /* !_WIN32 */
}

/*
** COMMAND: test-case-filename
**
** Usage: fossil test-case-filename DIRECTORY PATH PATH PATH ....
**
** All the PATH arguments (there must be one at least one) are pathnames
** relative to DIRECTORY.  This test command prints the OS-preferred name
** for each PATH in filesystems where case is not significant.
*/
void test_preferred_fn(void){
  int i;
  if( g.argc<4 ){
    usage("DIRECTORY PATH ...");
  }
  for(i=3; i<g.argc; i++){
    char *z = file_case_preferred_name(g.argv[2], g.argv[i]);
    fossil_print("%s -> %s\n", g.argv[i], z);
    fossil_free(z);
  }
}

/*
** The input is the name of an executable, such as one might
** type on a command-line.  This routine resolves that name into
** a full pathname.  The result is obtained from fossil_malloc()
** and should be freed by the caller.
*/
char *file_fullexename(const char *zCmd){
#ifdef _WIN32
  char *zPath;
  char *z = 0;
  const char *zExe = "";
  if( sqlite3_strlike("%.exe",zCmd,0)!=0 ) zExe = ".exe";
  if( file_is_absolute_path(zCmd) ){
    return mprintf("%s%s", zCmd, zExe);
  }
  if( strchr(zCmd,'\\')!=0 && strchr(zCmd,'/')!=0 ){
    int i;
    Blob out = BLOB_INITIALIZER;
    file_canonical_name(zCmd, &out, 0);
    blob_append(&out, zExe, -1);
    z = fossil_strdup(blob_str(&out));
    blob_reset(&out);
    for(i=0; z[i]; i++){ if( z[i]=='/' ) z[i] = '\\'; }
    return z;
  }
  z = mprintf(".\\%s%s", zCmd, zExe);
  if( file_isfile(z, ExtFILE) ){
    int i;
    Blob out = BLOB_INITIALIZER;
    file_canonical_name(zCmd, &out, 0);
    blob_append(&out, zExe, -1);
    z = fossil_strdup(blob_str(&out));
    blob_reset(&out);
    for(i=0; z[i]; i++){ if( z[i]=='/' ) z[i] = '\\'; }
    return z;
  }
  fossil_free(z);
  zPath = fossil_getenv("PATH");
  while( zPath && zPath[0] ){
    int n;
    char *zColon;
    zColon = strchr(zPath, ';');
    n = zColon ? (int)(zColon-zPath) : (int)strlen(zPath);
    while( n>0 && zPath[n-1]=='\\' ){ n--; }
    z = mprintf("%.*s\\%s%s", n, zPath, zCmd, zExe);
    if( file_isfile(z, ExtFILE) ){
      return z;
    }
    fossil_free(z);
    if( zColon==0 ) break;
    zPath = zColon+1;
  }
  return fossil_strdup(zCmd);
#else
  char *zPath;
  char *z;
  if( zCmd[0]=='/' ){
    return fossil_strdup(zCmd);
  }
  if( strchr(zCmd,'/')!=0 ){
    Blob out = BLOB_INITIALIZER;
    file_canonical_name(zCmd, &out, 0);
    z = fossil_strdup(blob_str(&out));
    blob_reset(&out);
    return z;
  }
  zPath = fossil_getenv("PATH");
  while( zPath && zPath[0] ){
    int n;
    char *zColon;
    zColon = strchr(zPath, ':');
    n = zColon ? (int)(zColon-zPath) : (int)strlen(zPath);
    z = mprintf("%.*s/%s", n, zPath, zCmd);
    if( file_isexe(z, ExtFILE) ){
      return z;
    }
    fossil_free(z);
    if( zColon==0 ) break;
    zPath = zColon+1;
  }
  return fossil_strdup(zCmd);
#endif
}

/*
** COMMAND: test-which
**
** Usage: %fossil test-which ARGS...
**
** For each argument, search the PATH for the executable with the name
** and print its full pathname.
*/
void test_which_cmd(void){
  int i;
  for(i=2; i<g.argc; i++){
    char *z = file_fullexename(g.argv[i]);
    fossil_print("%z\n", z);
  }
}

/*
** Emits the effective or raw stat() information for the specified
** file or directory, optionally preserving the trailing slash and
** resetting the cached stat() information.
*/
static void emitFileStat(
  const char *zPath,
  int slash,
  int reset
){
  char zBuf[200];
  char *z;
  Blob x;
  char *zFull;
  int rc;
  sqlite3_int64 iMtime;
  struct fossilStat testFileStat;
  memset(zBuf, 0, sizeof(zBuf));
  blob_zero(&x);
  file_canonical_name(zPath, &x, slash);
  zFull = blob_str(&x);
  fossil_print("[%s] -> [%s]\n", zPath, zFull);
  memset(&testFileStat, 0, sizeof(struct fossilStat));
  rc = fossil_stat(zPath, &testFileStat, 0);
  fossil_print("  stat_rc                = %d\n", rc);
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", testFileStat.st_size);
  fossil_print("  stat_size              = %s\n", zBuf);
  if( g.db==0 ) sqlite3_open(":memory:", &g.db);
  z = db_text(0, "SELECT datetime(%lld, 'unixepoch')", testFileStat.st_mtime);
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld (%s)", testFileStat.st_mtime, z);
  fossil_free(z);
  fossil_print("  stat_mtime             = %s\n", zBuf);
  fossil_print("  stat_mode              = 0%o\n", testFileStat.st_mode);
  memset(&testFileStat, 0, sizeof(struct fossilStat));
  rc = fossil_stat(zPath, &testFileStat, 1);
  fossil_print("  l_stat_rc              = %d\n", rc);
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", testFileStat.st_size);
  fossil_print("  l_stat_size            = %s\n", zBuf);
  z = db_text(0, "SELECT datetime(%lld, 'unixepoch')", testFileStat.st_mtime);
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld (%s)", testFileStat.st_mtime, z);
  fossil_free(z);
  fossil_print("  l_stat_mtime           = %s\n", zBuf);
  fossil_print("  l_stat_mode            = 0%o\n", testFileStat.st_mode);
  if( reset ) resetStat();
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_size(zPath,ExtFILE));
  fossil_print("  file_size(ExtFILE)     = %s\n", zBuf);
  iMtime = file_mtime(zPath, ExtFILE);
  z = db_text(0, "SELECT datetime(%lld, 'unixepoch')", iMtime);
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld (%s)", iMtime, z);
  fossil_free(z);
  fossil_print("  file_mtime(ExtFILE)    = %s\n", zBuf);
  fossil_print("  file_mode(ExtFILE)     = 0%o\n", file_mode(zPath,ExtFILE));
  fossil_print("  file_isfile(ExtFILE)   = %d\n", file_isfile(zPath,ExtFILE));
  fossil_print("  file_isdir(ExtFILE)    = %d\n", file_isdir(zPath,ExtFILE));
  fossil_print("  file_issocket()        = %d\n", file_issocket(zPath));
  if( reset ) resetStat();
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_size(zPath,RepoFILE));
  fossil_print("  file_size(RepoFILE)    = %s\n", zBuf);
  iMtime = file_mtime(zPath,RepoFILE);
  z = db_text(0, "SELECT datetime(%lld, 'unixepoch')", iMtime);
  sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld (%s)", iMtime, z);
  fossil_free(z);
  fossil_print("  file_mtime(RepoFILE)   = %s\n", zBuf);
  fossil_print("  file_mode(RepoFILE)    = 0%o\n", file_mode(zPath,RepoFILE));
  fossil_print("  file_isfile(RepoFILE)  = %d\n", file_isfile(zPath,RepoFILE));
  fossil_print("  file_isfile_or_link    = %d\n", file_isfile_or_link(zPath));
  fossil_print("  file_islink            = %d\n", file_islink(zPath));
  fossil_print("  file_isexe(RepoFILE)   = %d\n", file_isexe(zPath,RepoFILE));
  fossil_print("  file_isdir(RepoFILE)   = %d\n", file_isdir(zPath,RepoFILE));
  fossil_print("  file_is_repository     = %d\n", file_is_repository(zPath));
  fossil_print("  file_is_reserved_name  = %d\n",
                                             file_is_reserved_name(zFull,-1));
  fossil_print("  file_in_cwd            = %d\n", file_in_cwd(zPath));
  blob_reset(&x);
  if( reset ) resetStat();
}

/*
** COMMAND: test-file-environment
**
** Usage: %fossil test-file-environment FILENAME...
**
** Display the effective file handling subsystem "settings" and then
** display file system information about the files specified, if any.
**
** Options:
**     --allow-symlinks BOOLEAN     Temporarily turn allow-symlinks on/off
**     --open-config                Open the configuration database first
**     --reset                      Reset cached stat() info for each file
**     --root ROOT                  Use ROOT as the root of the check-out
**     --slash                      Trailing slashes, if any, are retained
*/
void cmd_test_file_environment(void){
  int i;
  int slashFlag = find_option("slash",0,0)!=0;
  int resetFlag = find_option("reset",0,0)!=0;
  const char *zRoot = find_option("root",0,1);
  const char *zAllow = find_option("allow-symlinks",0,1);
  if( find_option("open-config", 0, 0)!=0 ){
    Th_OpenConfig(1);
  }
  db_find_and_open_repository(OPEN_ANY_SCHEMA|OPEN_OK_NOT_FOUND, 0);
  fossil_print("filenames_are_case_sensitive() = %d\n",
               filenames_are_case_sensitive());
  if( zAllow ){
    g.allowSymlinks = !is_false(zAllow);
  }
  if( zRoot==0 ) zRoot = g.zLocalRoot==0 ? "" : g.zLocalRoot;
  fossil_print("db_allow_symlinks() = %d\n", db_allow_symlinks());
  fossil_print("local-root = [%s]\n", zRoot);
  for(i=2; i<g.argc; i++){
    char *z;
    emitFileStat(g.argv[i], slashFlag, resetFlag);
    z = file_canonical_name_dup(g.argv[i]);
    fossil_print("  file_canonical_name    = %s\n", z);
    fossil_print("  file_nondir_path       = ");
    if( fossil_strnicmp(zRoot,z,(int)strlen(zRoot))!=0 ){
      fossil_print("(--root is not a prefix of this file)\n");
    }else{
      int n = file_nondir_objects_on_path(zRoot, z);
      fossil_print("%.*s\n", n, z);
    }
    fossil_free(z);
  }
}

/*
** COMMAND:  test-canonical-name
** COMMAND: test-canonical-name
**
** Usage: %fossil test-canonical-name FILENAME...
**
** Test the operation of the canonical name generator.
** Also test Fossil's ability to measure attributes of a file.
*/
void cmd_test_canonical_name(void){
  int i;
  Blob x;
  int slashFlag = find_option("slash",0,0)!=0;
  blob_zero(&x);
  for(i=2; i<g.argc; i++){
    char zBuf[100];
    const char *zName = g.argv[i];
    file_canonical_name(g.argv[i], &x);
    printf("%s\n", blob_buffer(&x));
    file_canonical_name(zName, &x, slashFlag);
    fossil_print("[%s] -> [%s]\n", zName, blob_buffer(&x));
    blob_reset(&x);
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_size(zName,RepoFILE));
    fossil_print("  file_size           = %s\n", zBuf);
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", file_mtime(zName,RepoFILE));
    fossil_print("  file_mtime          = %s\n", zBuf);
    fossil_print("  file_isfile         = %d\n", file_isfile(zName,RepoFILE));
    fossil_print("  file_isfile_or_link = %d\n", file_isfile_or_link(zName));
    fossil_print("  file_islink         = %d\n", file_islink(zName));
    fossil_print("  file_isexe          = %d\n", file_isexe(zName,RepoFILE));
    fossil_print("  file_isdir          = %d\n", file_isdir(zName,RepoFILE));
  }
}

/*
** Return TRUE if the given filename is canonical.
**
** Canonical names are full pathnames using "/" not "\" and which
** contain no "/./" or "/../" terms.
*/
int file_is_canonical(const char *z){
  int i;
  if( z[0]!='/'
#ifdef __MINGW32__
    && (z[0]==0 || z[1]!=':' || z[2]!='/')
#if defined(_WIN32) || defined(__CYGWIN__)
    && (!fossil_isupper(z[0]) || z[1]!=':' || z[2]!='/')
#endif
  ) return 0;

  for(i=0; z[i]; i++){
    if( z[i]=='\\' ) return 0;
    if( z[i]=='/' ){
      if( z[i+1]=='.' ){
        if( z[i+2]=='/' || z[i+2]==0 ) return 0;
        if( z[i+2]=='.' && (z[i+3]=='/' || z[i+3]==0) ) return 0;
      }
    }
  }
  return 1;
}

/*
** Return a pointer to the first character in a pathname past the
** drive letter.  This routine is a no-op on unix.
*/
char *file_without_drive_letter(char *zIn){
#ifdef _WIN32
  if( fossil_isalpha(zIn[0]) && zIn[1]==':' ) zIn += 2;
#endif
  return zIn;
}

/*
** Compute a pathname for a file or directory that is relative
** to the current directory.
** to the current directory.  If the slash parameter is non-zero,
** the trailing slash, if any, is retained.
*/
void file_relative_name(const char *zOrigName, Blob *pOut){
void file_relative_name(const char *zOrigName, Blob *pOut, int slash){
  char *zPath;
  blob_set(pOut, zOrigName);
  blob_resize(pOut, file_simplify_name(blob_buffer(pOut), blob_size(pOut))); 
  zPath = blob_buffer(pOut);
  blob_resize(pOut, file_simplify_name(blob_buffer(pOut),
                                       blob_size(pOut), slash));
  zPath = file_without_drive_letter(blob_buffer(pOut));
  if( zPath[0]=='/' ){
    int i, j;
    Blob tmp;
    char zPwd[2000];
    if( getcwd(zPwd, sizeof(zPwd)-20)==0 ){
      fprintf(stderr, "pwd too big: max %d\n", (int)sizeof(zPwd)-20);
      exit(1);
    char *zPwd;
    char zBuf[2000];
    zPwd = zBuf;
    file_getcwd(zBuf, sizeof(zBuf)-20);
    zPwd = file_without_drive_letter(zBuf);
    i = 1;
#if defined(_WIN32) || defined(__CYGWIN__)
    while( zPath[i] && fossil_tolower(zPwd[i])==fossil_tolower(zPath[i]) ) i++;
#else
    }
    for(i=1; zPath[i] && zPwd[i]==zPath[i]; i++){}
    while( zPath[i] && zPwd[i]==zPath[i] ) i++;
#endif
    if( zPath[i]==0 ){
      blob_reset(pOut);
      memcpy(&tmp, pOut, sizeof(tmp));
      if( zPwd[i]==0 ){
        blob_append(pOut, ".", 1);
        blob_set(pOut, ".");
      }else{
        blob_append(pOut, "..", 2);
        blob_set(pOut, "..");
        for(j=i+1; zPwd[j]; j++){
          if( zPwd[j]=='/' ) {
          if( zPwd[j]=='/' ){
            blob_append(pOut, "/..", 3);
          }
        }
        while( i>0 && (zPwd[i]!='/')) --i;
        blob_append(pOut, zPath+i, j-i);
      }
      if( slash && i>0 && zPath[strlen(zPath)-1]=='/'){
        blob_append(pOut, "/", 1);
      }
      blob_reset(&tmp);
      return;
    }
    if( zPwd[i]==0 && zPath[i]=='/' ){
      memcpy(&tmp, pOut, sizeof(tmp));
      blob_set(pOut, "./");
      blob_append(pOut, &zPath[i+1], -1);
      blob_reset(&tmp);
      return;
    }
    while( zPath[i-1]!='/' ){ i--; }
    if( zPwd[0]=='/' && strlen(zPwd)==1 ){
      /* If on '/', don't go to higher level */
      blob_zero(&tmp);
    }else{
    blob_set(&tmp, "../");
      blob_set(&tmp, "../");
    }
    for(j=i; zPwd[j]; j++){
      if( zPwd[j]=='/' ) {
      if( zPwd[j]=='/' ){
        blob_append(&tmp, "../", 3);
      }
    }
    blob_append(&tmp, &zPath[i], -1);
    blob_reset(pOut);
    memcpy(pOut, &tmp, sizeof(tmp));
  }
}

/*
** COMMAND:  test-relative-name
** COMMAND: test-relative-name
**
** Test the operation of the relative name generator.
*/
void cmd_test_relative_name(void){
  int i;
  Blob x;
  int slashFlag = find_option("slash",0,0)!=0;
  blob_zero(&x);
  for(i=2; i<g.argc; i++){
    file_relative_name(g.argv[i], &x);
    printf("%s\n", blob_buffer(&x));
    file_relative_name(g.argv[i], &x, slashFlag);
    fossil_print("%s\n", blob_buffer(&x));
    blob_reset(&x);
  }
}

/*
** Compute a full path name for a file in the local tree.  If
** the absolute flag is non-zero, the computed path will be
** absolute, starting with the root path of the local tree;
** Compute a pathname for a file relative to the root of the local
** tree.  Return TRUE on success.  On failure, print and error
** message and quit if the errFatal flag is true.  If errFatal is
** false, then simply return 0.
** otherwise, it will be relative to the root of the local
** tree.  In both cases, the root of the local tree is defined
** by the g.zLocalRoot variable.  Return TRUE on success.  On
** failure, print and error message and quit if the errFatal
** flag is true.  If errFatal is false, then simply return 0.
**
** The root of the tree is defined by the g.zLocalRoot variable.
*/
int file_tree_name(const char *zOrigName, Blob *pOut, int errFatal){
  int n;
int file_tree_name(
  const char *zOrigName,
  Blob *pOut,
  int absolute,
  int errFatal
){
  Blob localRoot;
  int nLocalRoot;
  char *zLocalRoot;
  Blob full;
  int nFull;
  char *zFull;
  int (*xCmp)(const char*,const char*,int);
  db_must_be_within_tree();
  file_canonical_name(zOrigName, &full);
  n = strlen(g.zLocalRoot);
  if( blob_size(&full)<=n || memcmp(g.zLocalRoot, blob_buffer(&full), n) ){
    blob_reset(&full);
    if( errFatal ){
      fossil_fatal("file outside of checkout tree: %s", zOrigName);
    }

  blob_zero(pOut);
  if( !g.localOpen ){
    if( absolute && !file_is_absolute_path(zOrigName) ){
      if( errFatal ){
        fossil_fatal("relative to absolute needs open check-out tree: %s",
                     zOrigName);
      }
      return 0;
    }else{
      /*
      ** The original path may be relative or absolute; however, without
      ** an open check-out tree, the only things we can do at this point
      ** is return it verbatim or generate a fatal error.  The caller is
      ** probably expecting a tree-relative path name will be returned;
      ** however, most places where this function is called already check
      ** if the local check-out tree is open, either directly or indirectly,
      ** which would make this situation impossible.  Alternatively, they
      ** could check the returned path using the file_is_absolute_path()
      ** function.
      */
      blob_appendf(pOut, "%s", zOrigName);
      return 1;
    }
  }
  file_canonical_name(g.zLocalRoot, &localRoot, 1);
  nLocalRoot = blob_size(&localRoot);
  zLocalRoot = blob_buffer(&localRoot);
  assert( nLocalRoot>0 && zLocalRoot[nLocalRoot-1]=='/' );
  file_canonical_name(zOrigName, &full, 0);
  nFull = blob_size(&full);
  zFull = blob_buffer(&full);
  if( filenames_are_case_sensitive() ){
    xCmp = fossil_strncmp;
  }else{
    xCmp = fossil_strnicmp;
  }
    return 0;
  }
  blob_zero(pOut);
  blob_append(pOut, blob_buffer(&full)+n, blob_size(&full)-n);
  return 1;
}


  /* Special case.  zOrigName refers to g.zLocalRoot directory. */
  if( (nFull==nLocalRoot-1 && xCmp(zLocalRoot, zFull, nFull)==0)
      || (nFull==1 && zFull[0]=='/' && nLocalRoot==1 && zLocalRoot[0]=='/') ){
    if( absolute ){
      blob_append(pOut, zLocalRoot, nLocalRoot);
    }else{
      blob_append(pOut, ".", 1);
    }
    blob_reset(&localRoot);
    blob_reset(&full);
    return 1;
  }

  if( nFull<=nLocalRoot || xCmp(zLocalRoot, zFull, nLocalRoot) ){
    blob_reset(&localRoot);
    blob_reset(&full);
    if( errFatal ){
      fossil_fatal("file outside of check-out tree: %s", zOrigName);
    }
    return 0;
  }
  if( absolute ){
    if( !file_is_absolute_path(zOrigName) ){
      blob_append(pOut, zLocalRoot, nLocalRoot);
    }
    blob_append(pOut, zOrigName, -1);
    blob_resize(pOut, file_simplify_name(blob_buffer(pOut),
                                         blob_size(pOut), 0));
  }else{
    blob_append(pOut, &zFull[nLocalRoot], nFull-nLocalRoot);
  }
  blob_reset(&localRoot);
  blob_reset(&full);
  return 1;
}

/*
** COMMAND: test-tree-name
**
** Test the operation of the tree name generator.
**
** Options:
**   --absolute           Return an absolute path instead of a relative one
**   --case-sensitive B   Enable or disable case-sensitive filenames.  B is
**                        a boolean: "yes", "no", "true", "false", etc.
*/
void cmd_test_tree_name(void){
  int i;
  Blob x;
  int absoluteFlag = find_option("absolute",0,0)!=0;
  db_find_and_open_repository(0,0);
/*
** COMMAND:  test-tree-name
**
** Test the operation of the tree name generator.
*/
void cmd_test_tree_name(void){
  int i;
  Blob x;
  blob_zero(&x);
  for(i=2; i<g.argc; i++){
    if( file_tree_name(g.argv[i], &x, 1) ){
      printf("%s\n", blob_buffer(&x));
    if( file_tree_name(g.argv[i], &x, absoluteFlag, 1) ){
      fossil_print("%s\n", blob_buffer(&x));
      blob_reset(&x);
    }
  }
}

/*
** zFile is the name of a file.  Return true if that file is in the
** current working directory (the "pwd" or file_getcwd() directory).
** Return false if the file is someplace else.
*/
int file_in_cwd(const char *zFile){
  char *zFull = file_canonical_name_dup(zFile);
  char *zCwd = file_getcwd(0,0);
  size_t nCwd = strlen(zCwd);
  size_t nFull = strlen(zFull);
  int rc = 1;
  int (*xCmp)(const char*,const char*,int);

  if( filenames_are_case_sensitive() ){
    xCmp = fossil_strncmp;
  }else{
    xCmp = fossil_strnicmp;
  }

  if( nFull>nCwd+1
   && xCmp(zFull,zCwd,nCwd)==0
   && zFull[nCwd]=='/'
   && strchr(zFull+nCwd+1, '/')==0
  ){
    rc = 1;
  }else{
    rc = 0;
  }
  fossil_free(zFull);
  fossil_free(zCwd);
  return rc;
}

/*
** Parse a URI into scheme, host, port, and path.
*/
void file_parse_uri(
  const char *zUri,
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    blob_set(pPath, &zUri[i]);
  }else{
    blob_set(pPath, "/");
  }
}

/*
** Construct a random temporary filename into zBuf[].
** Construct a random temporary filename into pBuf where the name of
** the temporary file is derived from zBasis.  The suffix on the temp
** file is the same as the suffix on zBasis, and the temp file has
** the root of zBasis in its name.
**
** If zTag is not NULL, then try to create the temp-file using zTag
** as a differentiator.  If that fails, or if zTag is NULL, then use
** a bunch of random characters as the tag.
**
** Dangerous characters in zBasis are changed.
**
** See also fossil_temp_filename() and file_time_tempname();
*/
void file_tempname(int nBuf, char *zBuf){
void file_tempname(Blob *pBuf, const char *zBasis, const char *zTag){
#if defined(_WIN32)
  const char *azDirs[] = {
     0, /* GetTempPath */
     0, /* TEMP */
     0, /* TMP */
     ".",
  };
#else
  static const char *azDirs[] = {
     0, /* TMPDIR */
     "/var/tmp",
     "/usr/tmp",
     "/tmp",
     "/temp",
     ".",
  };
#endif
  static const unsigned char zChars[] =
    "abcdefghijklmnopqrstuvwxyz"
    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
    "0123456789";
  unsigned int i, j;
  struct stat buf;
  const char *zDir = ".";
  
  for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){
    if( stat(azDirs[i], &buf) ) continue;
    if( !S_ISDIR(buf.st_mode) ) continue;
    if( access(azDirs[i], 07) ) continue;
  unsigned int i;
  const char *zDir = ".";
  int cnt = 0;
  char zRand[16];
  int nBasis;
  const char *zSuffix;
  char *z;

#if defined(_WIN32)
  wchar_t zTmpPath[MAX_PATH];

  if( GetTempPathW(MAX_PATH, zTmpPath) ){
    azDirs[0] = fossil_path_to_utf8(zTmpPath);
    /* Removing trailing \ from the temp path */
    z = (char*)azDirs[0];
    i = (int)strlen(z)-1;
    if( i>0 && z[i]=='\\' ) z[i] = 0;
  }

  azDirs[1] = fossil_getenv("TEMP");
  azDirs[2] = fossil_getenv("TMP");
#else
  azDirs[0] = fossil_getenv("TMPDIR");
#endif

  for(i=0; i<count(azDirs); i++){
    if( azDirs[i]==0 ) continue;
    if( !file_isdir(azDirs[i], ExtFILE) ) continue;
    zDir = azDirs[i];
    break;
  }

  /* Check that the output buffer is large enough for the temporary file 
  ** name. If it is not, return SQLITE_ERROR.
  assert( zBasis!=0 );
  zSuffix = 0;
  for(i=0; zBasis[i]; i++){
    if( zBasis[i]=='/' || zBasis[i]=='\\' ){
      zBasis += i+1;
  */
  if( (strlen(zDir) + 17) >= (size_t)nBuf ){
    fossil_fatal("insufficient space for temporary filename");
      i = -1;
    }else if( zBasis[i]=='.' ){
      zSuffix = zBasis + i;
    }
  }
  if( zSuffix==0 || zSuffix<=zBasis ){
    zSuffix = "";
    nBasis = i;
  }else{
    nBasis = (int)(zSuffix - zBasis);
  }
  if( nBasis==0 ){
    nBasis = 6;
    zBasis = "fossil";

  }
  do{
    blob_zero(pBuf);
    if( cnt++>20 ) fossil_fatal("cannot generate a temporary filename");
    if( zTag==0 ){
      const int nRand = sizeof(zRand)-1;
      sqlite3_randomness(nRand, zRand);
      for(i=0; i<nRand; i++){
        zRand[i] = (char)zChars[ ((unsigned char)zRand[i])%(sizeof(zChars)-1) ];
      }
      zRand[nRand] = 0;
      zTag = zRand;
    }
    blob_appendf(pBuf, "%s/%.*s~%s%s", zDir, nBasis, zBasis, zTag, zSuffix);
    zTag = 0;
    for(z=blob_str(pBuf); z!=0 && (z=strpbrk(z,"'\"`;|$&"))!=0; z++){
      z[0] = '_';
    }
  }while( file_size(blob_str(pBuf), ExtFILE)>=0 );
    sqlite3_snprintf(nBuf-17, zBuf, "%s/", zDir);
    j = (int)strlen(zBuf);
    sqlite3_randomness(15, &zBuf[j]);
    for(i=0; i<15; i++, j++){
      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];

#if defined(_WIN32)
  fossil_path_free((char *)azDirs[0]);
  fossil_path_free((char *)azDirs[1]);
  fossil_path_free((char *)azDirs[2]);
  /* Change all \ characters in the windows path into / so that they can
  ** be safely passed to a subcommand, such as by gdiff */
  z = blob_buffer(pBuf);
  for(i=0; z[i]; i++) if( z[i]=='\\' ) z[i] = '/';
#else
  fossil_path_free((char *)azDirs[0]);
#endif
}

/*
** Compute a temporary filename in zDir.  The filename is based on
** the current time.
**
** See also fossil_temp_filename() and file_tempname();
*/
char *file_time_tempname(const char *zDir, const char *zSuffix){
  struct tm *tm;
  unsigned int r;
  static unsigned int cnt = 0;
  time_t t;
  t = time(0);
  tm = gmtime(&t);
  sqlite3_randomness(sizeof(r), &r);
  return mprintf("%s/%04d%02d%02d%02d%02d%02d%04d%06d%s",
      zDir, tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
            tm->tm_hour, tm->tm_min, tm->tm_sec, cnt++, r%1000000, zSuffix);
}


/*
** COMMAND: test-tempname
** Usage:  fossil test-name [--time SUFFIX] [--tag NAME] BASENAME ...
**
** Generate temporary filenames derived from BASENAME.  Use the --time
** option to generate temp names based on the time of day.  If --tag NAME
** is specified, try to use NAME as the differentiator in the temp file.
**
** If --time is used, file_time_tempname() generates the filename.
** If BASENAME is present, file_tempname() generates the filename.
** Without --time or BASENAME, fossil_temp_filename() generates the filename.
*/
void file_test_tempname(void){
  int i;
  const char *zSuffix = find_option("time",0,1);
  Blob x = BLOB_INITIALIZER;
  char *z;
  const char *zTag = find_option("tag",0,1);
  verify_all_options();
  if( g.argc<=2 ){
    z = fossil_temp_filename();
    fossil_print("%s\n", z);
    sqlite3_free(z);
  }
  for(i=2; i<g.argc; i++){
    if( zSuffix ){
      z = file_time_tempname(g.argv[i], zSuffix);
      fossil_print("%s\n", z);
      fossil_free(z);
    }else{
      file_tempname(&x, g.argv[i], zTag);
      fossil_print("%s\n", blob_str(&x));
      blob_reset(&x);
    }
  }
}


/*
** Return true if a file named zName exists and has identical content
** to the blob pContent.  If zName does not exist or if the content is
** different in any way, then return false.
**
** This routine assumes RepoFILE
*/
int file_is_the_same(Blob *pContent, const char *zName){
  i64 iSize;
  int rc;
  Blob onDisk;

  iSize = file_size(zName, RepoFILE);
  if( iSize<0 ) return 0;
  if( iSize!=blob_size(pContent) ) return 0;
  blob_read_from_file(&onDisk, zName, RepoFILE);
  rc = blob_compare(&onDisk, pContent);
  blob_reset(&onDisk);
  return rc==0;
}

/*
** Return the value of an environment variable as UTF8.
** Use fossil_path_free() to release resources.
*/
char *fossil_getenv(const char *zName){
#ifdef _WIN32
  wchar_t *uName = fossil_utf8_to_unicode(zName);
  void *zValue = _wgetenv(uName);
  fossil_unicode_free(uName);
#else
  char *zValue = getenv(zName);
#endif
  if( zValue ) zValue = fossil_path_to_utf8(zValue);
  return zValue;
}

/*
** Sets the value of an environment variable as UTF8.
*/
int fossil_setenv(const char *zName, const char *zValue){
  int rc;
  char *zString = mprintf("%s=%s", zName, zValue);
#ifdef _WIN32
  wchar_t *uString = fossil_utf8_to_unicode(zString);
  rc = _wputenv(uString);
  fossil_unicode_free(uString);
  fossil_free(zString);
#else
  rc = putenv(zString);
  /* NOTE: Cannot free the string on POSIX. */
  /* fossil_free(zString); */
#endif
  return rc;
}

/*
** Clear all environment variables
*/
int fossil_clearenv(void){
#ifdef _WIN32
  int rc = 0;
  LPWCH zzEnv = GetEnvironmentStringsW();
  if( zzEnv ){
    LPCWSTR zEnv = zzEnv; /* read-only */
    while( 1 ){
      LPWSTR zNewEnv = _wcsdup(zEnv); /* writable */
      if( zNewEnv ){
        LPWSTR zEquals = wcsstr(zNewEnv, L"=");
        if( zEquals ){
          zEquals[1] = 0; /* no value */
          if( zNewEnv==zEquals || _wputenv(zNewEnv)==0 ){ /* via CRT */
            /* do nothing */
          }else{
            zEquals[0] = 0; /* name only */
            if( !SetEnvironmentVariableW(zNewEnv, NULL) ){ /* via Win32 */
              rc = 1;
            }
          }
          if( rc==0 ){
            zEnv += (lstrlenW(zEnv) + 1); /* double NUL term? */
            if( zEnv[0]==0 ){
              free(zNewEnv);
              break; /* no more vars */
            }
          }
        }else{
          rc = 1;
        }
      }else{
        rc = 1;
      }
      free(zNewEnv);
      if( rc!=0 ) break;
    }
    if( !FreeEnvironmentStringsW(zzEnv) ){
      rc = 2;
    }
  }else{
    rc = 1;
  }
  return rc;
#else
  extern char **environ;
  environ[0] = 0;
  return 0;
#endif
}

/*
** Like fopen() but always takes a UTF8 argument.
**
** This function assumes ExtFILE. In other words, symbolic links
** are always followed.
*/
FILE *fossil_fopen(const char *zName, const char *zMode){
#ifdef _WIN32
  wchar_t *uMode = fossil_utf8_to_unicode(zMode);
  wchar_t *uName = fossil_utf8_to_path(zName, 0);
  FILE *f = _wfopen(uName, uMode);
  fossil_path_free(uName);
  fossil_unicode_free(uMode);
#else
  FILE *f = fopen(zName, zMode);
#endif
  return f;
}

/*
** Wrapper for freopen() that understands UTF8 arguments.
*/
FILE *fossil_freopen(const char *zName, const char *zMode, FILE *stream){
#ifdef _WIN32
  wchar_t *uMode = fossil_utf8_to_unicode(zMode);
  wchar_t *uName = fossil_utf8_to_path(zName, 0);
  FILE *f = _wfreopen(uName, uMode, stream);
  fossil_path_free(uName);
  fossil_unicode_free(uMode);
#else
  FILE *f = freopen(zName, zMode, stream);
#endif
  return f;
}

/*
** Works like fclose() except that:
**
** 1) is a no-op if f is 0 or if it is stdin.
**
** 2) If f is one of (stdout, stderr), it is flushed but not closed.
*/
void fossil_fclose(FILE *f){
  if(f!=0){
    if(stdout==f || stderr==f){
      fflush(f);
    }else if(stdin!=f){
      fclose(f);
    }
  }
}

/*
**   Works like fopen(zName,"wb") except that:
**
**   1) If zName is "-", the stdout handle is returned.
**
**   2) Else file_mkfolder() is used to create all directories
**      which lead up to the file before opening it.
**
**   3) It fails fatally if the file cannot be opened.
*/
FILE *fossil_fopen_for_output(const char *zFilename){
  if(zFilename[0]=='-' && zFilename[1]==0){
    return stdout;
  }else{
    FILE * p;
    file_mkfolder(zFilename, ExtFILE, 1, 0);
    p = fossil_fopen(zFilename, "wb");
    if( p==0 ){
#if defined(_WIN32)
      const char *zReserved = file_is_win_reserved(zFilename);
      if( zReserved ){
        fossil_fatal("cannot open \"%s\" because \"%s\" is "
                     "a reserved name on Windows", zFilename,
                     zReserved);
      }
#endif
      fossil_fatal("unable to open file \"%s\" for writing",
                   zFilename);
    }
    return p;
  }
}


/*
** Return non-NULL if zFilename contains pathname elements that
** are reserved on Windows.  The returned string is the disallowed
** path element.
*/
const char *file_is_win_reserved(const char *zPath){
  static const char *const azRes[] = { "CON","PRN","AUX","NUL","COM","LPT" };
  static char zReturn[5];
  int i;
  while( zPath[0] ){
    for(i=0; i<count(azRes); i++){
      if( sqlite3_strnicmp(zPath, azRes[i], 3)==0
       && ((i>=4 && fossil_isdigit(zPath[3])
                 && (zPath[4]=='/' || zPath[4]=='.' || zPath[4]==0))
          || (i<4 && (zPath[3]=='/' || zPath[3]=='.' || zPath[3]==0)))
      ){
        sqlite3_snprintf(5,zReturn,"%.*s", i>=4 ? 4 : 3, zPath);
        return zReturn;
      }
    }
    while( zPath[0] && zPath[0]!='/' ) zPath++;
    while( zPath[0]=='/' ) zPath++;
  }
  return 0;
}

/*
** COMMAND: test-valid-for-windows
** Usage:  fossil test-valid-for-windows FILENAME ....
**
** Show which filenames are not valid for Windows
*/
void file_test_valid_for_windows(void){
  int i;
  for(i=2; i<g.argc; i++){
    fossil_print("%s %s\n", file_is_win_reserved(g.argv[i]), g.argv[i]);
  }
}

/*
** Returns non-zero if the specified file extension belongs to a Fossil
** repository file.
*/
int file_is_repository_extension(const char *zPath){
  if( fossil_strcmp(zPath, ".fossil")==0 ) return 1;
#if USE_SEE
  if( fossil_strcmp(zPath, ".efossil")==0 ) return 1;
#endif
  return 0;
}

/*
** Returns non-zero if the specified path appears to match a file extension
** that should belong to a Fossil repository file.
*/
int file_contains_repository_extension(const char *zPath){
  if( sqlite3_strglob("*.fossil*",zPath)==0 ) return 1;
#if USE_SEE
  if( sqlite3_strglob("*.efossil*",zPath)==0 ) return 1;
#endif
  return 0;
}

/*
** Returns non-zero if the specified path ends with a file extension that
** should belong to a Fossil repository file.
*/
int file_ends_with_repository_extension(const char *zPath, int bQual){
  if( bQual ){
    if( sqlite3_strglob("*/*.fossil", zPath)==0 ) return 1;
#if USE_SEE
    if( sqlite3_strglob("*/*.efossil", zPath)==0 ) return 1;
#endif
  }else{
    if( sqlite3_strglob("*.fossil", zPath)==0 ) return 1;
#if USE_SEE
    if( sqlite3_strglob("*.efossil", zPath)==0 ) return 1;
#endif
  }
  return 0;
}

/*
** Remove surplus "/" characters from the beginning of a full pathname.
** Extra leading "/" characters are benign on unix.  But on Windows
** machines, they must be removed.  Example:  Convert "/C:/fossil/xyx.fossil"
** into "C:/fossil/xyz.fossil". Cygwin should behave as Windows here.
*/
const char *file_cleanup_fullpath(const char *z){
#if defined(_WIN32) || defined(__CYGWIN__)
  if( z[0]=='/' && fossil_isalpha(z[1]) && z[2]==':' && z[3]=='/' ) z++;
#else
  while( z[0]=='/' && z[1]=='/' ) z++;
#endif
  return z;
}

/*
** Count the number of objects (files and subdirectories) in a given
** directory.  Return the count.  Return -1 if the object is not a
** directory.
**
** This routine never counts the two "." and ".." special directory
** entries, even if the provided glob would match them.
*/
int file_directory_size(const char *zDir, const char *zGlob, int omitDotFiles){
  void *zNative;
  DIR *d;
  int n = -1;
  zNative = fossil_utf8_to_path(zDir,1);
  d = opendir(zNative);
  if( d ){
    struct dirent *pEntry;
    n = 0;
    while( (pEntry=readdir(d))!=0 ){
      if( pEntry->d_name[0]==0 ) continue;
      if( pEntry->d_name[0]=='.' &&
          (omitDotFiles
           /* Skip the special "." and ".." entries. */
           || pEntry->d_name[1]==0
           || (pEntry->d_name[1]=='.' && pEntry->d_name[2]==0))){
        continue;
      }
      if( zGlob ){
        char *zUtf8 = fossil_path_to_utf8(pEntry->d_name);
        int rc = sqlite3_strglob(zGlob, zUtf8);
        fossil_path_free(zUtf8);
        if( rc ) continue;
      }
      n++;
    }
    closedir(d);
  }
  fossil_path_free(zNative);
  return n;
}

/*
** COMMAND: test-dir-size
**
** Usage: %fossil test-dir-size NAME [GLOB] [--nodots]
**
** Return the number of objects in the directory NAME.  If GLOB is
** provided, then only count objects that match the GLOB pattern.
** if --nodots is specified, omit files that begin with ".".
*/
void test_dir_size_cmd(void){
  int omitDotFiles = find_option("nodots",0,0)!=0;
  const char *zGlob;
  const char *zDir;
  verify_all_options();
  if( g.argc!=3 && g.argc!=4 ){
    usage("NAME [GLOB] [-nodots]");
  }
  zDir = g.argv[2];
  zGlob = g.argc==4 ? g.argv[3] : 0;
  fossil_print("%d\n", file_directory_size(zDir, zGlob, omitDotFiles));
}

/*
** Internal helper for touch_cmd(). zAbsName must be resolvable as-is
** to an existing file - this function does not expand/normalize
** it. i.e. it "really should" be an absolute path. zTreeName is
** strictly cosmetic: it is used when dryRunFlag, verboseFlag, or
** quietFlag generate output, and is assumed to be a repo-relative or
** or subdir-relative filename.
**
** newMTime is the file's new timestamp (Unix epoch).
**
** Returns 1 if it sets zAbsName's mtime, 0 if it does not (indicating
** that the file already has that timestamp or a warning was emitted
** or was not found). If dryRunFlag is true then it outputs the name
** of the file it would have timestamped but does not stamp the
** file. If verboseFlag is true, it outputs a message if the file's
** timestamp is actually modified. If quietFlag is true then the
** output of non-fatal warning messages is suppressed.
**
** As a special case, if newMTime is 0 then this function emits a
** warning (unless quietFlag is true), does NOT set the timestamp, and
** returns 0. The timestamp is known to be zero when
** mtime_of_manifest_file() is asked to provide the timestamp for a
** file which is currently undergoing an uncommitted merge (though
** this may depend on exactly where that merge is happening the
** history of the project).
*/
static int touch_cmd_stamp_one_file(char const *zAbsName,
                                    char const *zTreeName,
                                    i64 newMtime, int dryRunFlag,
                                    int verboseFlag, int quietFlag){
  i64 currentMtime;
  if(newMtime==0){
    if( quietFlag==0 ){
      fossil_print("SKIPPING timestamp of 0: %s\n", zTreeName);
    }
    return 0;
  }
  currentMtime = file_mtime(zAbsName, 0);
  if(currentMtime<0){
    fossil_print("SKIPPING: cannot stat file: %s\n", zAbsName);
    return 0;
  }else if(currentMtime==newMtime){
    return 0;
  }else if( dryRunFlag!=0 ){
    fossil_print( "dry-run: %s\n", zTreeName );
  }else{
    file_set_mtime(zAbsName, newMtime);
    if( verboseFlag!=0 ){
      fossil_print( "touched %s\n", zTreeName );
    }
  }
  return 1;
}

/*
** Internal helper for touch_cmd(). If the given file name is found in
** the given check-out version, which MUST be the check-out version
** currently populating the vfile table, the vfile.mrid value for the
** file is returned, else 0 is returned. zName must be resolvable
** as-is from the vfile table - this function neither expands nor
** normalizes it, though it does compare using the repo's
** filename_collation() preference.
*/
static int touch_cmd_vfile_mrid( int vid, char const *zName ){
    zBuf[j] = 0;
  }while( access(zBuf,0)==0 );
  int mrid = 0;
  static Stmt q = empty_Stmt_m;
  db_static_prepare(&q,
             "SELECT vfile.mrid "
             "FROM vfile LEFT JOIN blob ON vfile.mrid=blob.rid "
             "WHERE vid=:vid AND pathname=:pathname %s",
             filename_collation());
  db_bind_int(&q, ":vid", vid);
  db_bind_text(&q, ":pathname", zName);
  if(SQLITE_ROW==db_step(&q)){
    mrid = db_column_int(&q, 0);
  }
  db_reset(&q);
  return mrid;
}

/*
** COMMAND: touch*
**
** Usage: %fossil touch ?OPTIONS? ?FILENAME...?
**
** For each file in the current check-out matching one of the provided
** list of glob patterns and/or file names, the file's mtime is
** updated to a value specified by one of the flags --checkout,
** --checkin, or --now.
**
** If neither glob patterns nor filenames are provided, it operates on
** all files managed by the currently checked-out version.
**
** This command gets its name from the conventional Unix "touch"
** command.
**
** Options:
**   --now          Stamp each affected file with the current time.
**                  This is the default behavior.
**   -c|--checkin   Stamp each affected file with the time of the
**                  most recent check-in which modified that file
**   -C|--checkout  Stamp each affected file with the time of the
**                  currently checked-out version
**   -g GLOBLIST    Comma-separated list of glob patterns
**   -G GLOBFILE    Similar to -g but reads its globs from a
**                  fossil-conventional glob list file
**   -v|--verbose   Outputs extra information about its globs
**                  and each file it touches
**   -n|--dry-run   Outputs which files would require touching,
**                  but does not touch them
**   -q|--quiet     Suppress warnings, e.g. when skipping unmanaged
**                  or out-of-tree files
**
** Only one of --now, --checkin, and --checkout may be used. The
** default is --now.
**
** Only one of -g or -G may be used. If neither is provided and no
** additional filenames are provided, the effect is as if a glob of
** '*' were provided, i.e. all files belonging to the
** currently checked-out version. Note that all glob patterns provided
** via these flags are always evaluated as if they are relative to the
** top of the source tree, not the current working (sub)directory.
** Filenames provided without these flags, on the other hand, are
** treated as relative to the current directory.
**
** As a special case, files currently undergoing an uncommitted merge
** might not get timestamped with --checkin because it may be
** impossible for fossil to choose between multiple potential
** timestamps. A non-fatal warning is emitted for such cases.
**
*/
void touch_cmd(){
  const char * zGlobList; /* -g List of glob patterns */
  const char * zGlobFile; /* -G File of glob patterns */
  Glob * pGlob = 0;       /* List of glob patterns */
  int verboseFlag;
  int dryRunFlag;
  int vid;                /* Check-out version */
  int changeCount = 0;    /* Number of files touched */
  int quietFlag = 0;      /* -q|--quiet */
  int timeFlag;           /* -1==--checkin, 1==--checkout, 0==--now */
  i64 nowTime = 0;        /* Timestamp of --now or --checkout */
  Stmt q;
  Blob absBuffer = empty_blob; /* Absolute filename buffer */

  verboseFlag = find_option("verbose","v",0)!=0;
  quietFlag = find_option("quiet","q",0)!=0 || g.fQuiet;
  dryRunFlag = find_option("dry-run","n",0)!=0;
  zGlobList = find_option("glob", "g",1);
  zGlobFile = find_option("globfile", "G",1);

  if(zGlobList && zGlobFile){
    fossil_fatal("Options -g and -G may not be used together.");
  }

  {
    int const ci =
      (find_option("checkin","c",0) || find_option("check-in",0,0))
      ? 1 : 0;
    int const co = find_option("checkout","C",0) ? 1 : 0;
    int const now = find_option("now",0,0) ? 1 : 0;
    if(ci + co + now > 1){
      fossil_fatal("Options --checkin, --checkout, and --now may "
                   "not be used together.");
    }else if(co){
      timeFlag = 1;
      if(verboseFlag){
        fossil_print("Timestamp = current check-out version.\n");
      }
    }else if(ci){
      timeFlag = -1;
      if(verboseFlag){
        fossil_print("Timestamp = check-in in which each file was "
                     "most recently modified.\n");
      }
    }else{
      timeFlag = 0;
      if(verboseFlag){
        fossil_print("Timestamp = current system time.\n");
      }
    }
  }

  verify_all_options();

  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if(vid==0){
    fossil_fatal("Cannot determine check-out version.");
  }

  if(zGlobList){
    pGlob = *zGlobList ? glob_create(zGlobList) : 0;
  }else if(zGlobFile){
    Blob globs = empty_blob;
    blob_read_from_file(&globs, zGlobFile, ExtFILE);
    pGlob = glob_create( globs.aData );
    blob_reset(&globs);
  }
  if( pGlob && verboseFlag!=0 ){
    int i;
    for(i=0; i<pGlob->nPattern; ++i){
      fossil_print("glob: %s\n", pGlob->azPattern[i]);
    }
  }

  db_begin_transaction();
  if(timeFlag==0){/*--now*/
    nowTime = time(0);
  }else if(timeFlag>0){/*--checkout: get the check-out
                         manifest's timestamp*/
    assert(vid>0);
    nowTime = db_int64(-1,
                       "SELECT CAST(strftime('%%s',"
                         "(SELECT mtime FROM event WHERE objid=%d)"
                       ") AS INTEGER)", vid);
    if(nowTime<0){
      fossil_fatal("Could not determine check-out version's time!");
    }
  }else{ /* --checkin */
    assert(0 == nowTime);
  }
  if((pGlob && pGlob->nPattern>0) || g.argc<3){
    /*
    ** We have either (1) globs or (2) no trailing filenames. If there
    ** are neither globs nor filenames then we operate on all managed
    ** files.
    */
    db_prepare(&q,
               "SELECT vfile.mrid, pathname "
               "FROM vfile LEFT JOIN blob ON vfile.mrid=blob.rid "
               "WHERE vid=%d", vid);
    while(SQLITE_ROW==db_step(&q)){
      int const fid = db_column_int(&q, 0);
      const char * zName = db_column_text(&q, 1);
      i64 newMtime = nowTime;
      char const * zAbs = 0;         /* absolute path */
      absBuffer.nUsed = 0;
      assert(timeFlag<0 ? newMtime==0 : newMtime>0);
      if(pGlob){
        if(glob_match(pGlob, zName)==0) continue;
      }
      blob_appendf( &absBuffer, "%s%s", g.zLocalRoot, zName );
      zAbs = blob_str(&absBuffer);
      if( newMtime || mtime_of_manifest_file(vid, fid, &newMtime)==0 ){
        changeCount +=
          touch_cmd_stamp_one_file( zAbs, zName, newMtime, dryRunFlag,
                                    verboseFlag, quietFlag );
      }
    }
    db_finalize(&q);
  }
  glob_free(pGlob);
  pGlob = 0;
  if(g.argc>2){
    /*
    ** Trailing filenames on the command line. These require extra
    ** care to avoid modifying unmanaged or out-of-tree files and
    ** finding an associated --checkin timestamp.
    */
    int i;
    Blob treeNameBuf = empty_blob;   /* Buffer for file_tree_name(). */
    for( i = 2; i < g.argc; ++i,
           blob_reset(&treeNameBuf) ){
      char const * zArg = g.argv[i];
      char const * zTreeFile;        /* repo-relative filename */
      char const * zAbs;             /* absolute filename */
      i64 newMtime = nowTime;
      int nameCheck;
      int fid;                       /* vfile.mrid of file */
      nameCheck = file_tree_name( zArg, &treeNameBuf, 0, 0 );
      if(nameCheck==0){
        if(quietFlag==0){
          fossil_print("SKIPPING out-of-tree file: %s\n", zArg);
        }
        continue;
      }
      zTreeFile = blob_str(&treeNameBuf);
      fid = touch_cmd_vfile_mrid( vid, zTreeFile );
      if(fid==0){
        if(quietFlag==0){
          fossil_print("SKIPPING unmanaged file: %s\n", zArg);
        }
        continue;
      }
      absBuffer.nUsed = 0;
      blob_appendf(&absBuffer, "%s%s", g.zLocalRoot, zTreeFile);
      zAbs = blob_str(&absBuffer);
      if(timeFlag<0){/*--checkin*/
        if(mtime_of_manifest_file( vid, fid, &newMtime )!=0){
          fossil_fatal("Could not resolve --checkin mtime of %s", zTreeFile);
        }
      }else{
        assert(newMtime>0);
      }
      changeCount +=
        touch_cmd_stamp_one_file( zAbs, zArg, newMtime, dryRunFlag,
                                  verboseFlag, quietFlag );
    }
  }
  db_end_transaction(0);
  blob_reset(&absBuffer);
  if( dryRunFlag!=0 ){
    fossil_print("dry-run: would have touched %d file(s)\n",
                 changeCount);
  }else{
    fossil_print("Touched %d file(s)\n", changeCount);
  }
}

/*
** If zFileName is not NULL and contains a '.', this returns a pointer
** to the position after the final '.', else it returns NULL. As a
** special case, if it ends with a period then a pointer to the
** terminating NUL byte is returned.
*/
const char * file_extension(const char *zFileName){
  const char * zExt = zFileName ? strrchr(zFileName, '.') : 0;
  return zExt ? &zExt[1] : 0;
}

/*
** Returns non-zero if the specified file name ends with any reserved name,
** e.g.: _FOSSIL_ or .fslckout.  Specifically, it returns 1 for exact match
** or 2 for a tail match on a longer file name.
**
** For the sake of efficiency, zFilename must be a canonical name, e.g. an
** absolute path using only forward slash ('/') as a directory separator.
**
** nFilename must be the length of zFilename.  When negative, strlen() will
** be used to calculate it.
*/
int file_is_reserved_name(const char *zFilename, int nFilename){
  const char *zEnd;  /* one-after-the-end of zFilename */
  int gotSuffix = 0; /* length of suffix (-wal, -shm, -journal) */

  assert( zFilename && "API misuse" );
  if( nFilename<0 ) nFilename = (int)strlen(zFilename);
  if( nFilename<8 ) return 0; /* strlen("_FOSSIL_") */
  zEnd = zFilename + nFilename;
  if( nFilename>=12 ){ /* strlen("_FOSSIL_-(shm|wal)") */
    /* Check for (-wal, -shm, -journal) suffixes, with an eye towards
    ** runtime speed. */
    if( zEnd[-4]=='-' ){
      if( fossil_strnicmp("wal", &zEnd[-3], 3)
       && fossil_strnicmp("shm", &zEnd[-3], 3) ){
        return 0;
      }
      gotSuffix = 4;
    }else if( nFilename>=16 && zEnd[-8]=='-' ){ /*strlen(_FOSSIL_-journal) */
      if( fossil_strnicmp("journal", &zEnd[-7], 7) ) return 0;
      gotSuffix = 8;
    }
    if( gotSuffix ){
      assert( 4==gotSuffix || 8==gotSuffix );
      zEnd -= gotSuffix;
      nFilename -= gotSuffix;
      gotSuffix = 1;
    }
    assert( nFilename>=8 && "strlen(_FOSSIL_)" );
    assert( gotSuffix==0 || gotSuffix==1 );
  }
  switch( zEnd[-1] ){
    case '_':{
      if( fossil_strnicmp("_FOSSIL_", &zEnd[-8], 8) ) return 0;
      if( 8==nFilename ) return 1;
      return zEnd[-9]=='/' ? 2 : gotSuffix;
    }
    case 'T':
    case 't':{
      if( nFilename<9 || zEnd[-9]!='.'
       || fossil_strnicmp(".fslckout", &zEnd[-9], 9) ){
        return 0;
      }
      if( 9==nFilename ) return 1;
      return zEnd[-10]=='/' ? 2 : gotSuffix;
    }
    default:{
      return 0;
    }
  }
}

/*
** COMMAND: test-is-reserved-name
**
** Usage: %fossil test-is-reserved-name FILENAMES...
**
** Passes each given name to file_is_reserved_name() and outputs one
** line per file: the result value of that function followed by the
** name.
*/
void test_is_reserved_name_cmd(void){
  int i;

  if(g.argc<3){
    usage("FILENAME_1 [...FILENAME_N]");
  }
  for( i = 2; i < g.argc; ++i ){
    const int check = file_is_reserved_name(g.argv[i], -1);
    fossil_print("%d %s\n", check, g.argv[i]);
  }
}


/*
** Returns 1 if the given directory contains a file named .fslckout, 2
** if it contains a file named _FOSSIL_, else returns 0.
*/
int dir_has_ckout_db(const char *zDir){
  int rc = 0;
  char * zCkoutDb = mprintf("%//.fslckout", zDir);
  if(file_isfile(zCkoutDb, ExtFILE)){
    rc = 1;
  }else{
    fossil_free(zCkoutDb);
    zCkoutDb = mprintf("%//_FOSSIL_", zDir);
    if(file_isfile(zCkoutDb, ExtFILE)){
      rc = 2;
    }
  }
  fossil_free(zCkoutDb);
  return rc;
}
Added src/fileedit.c.






















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code for the /fileedit page and related bits.
*/
#include "config.h"
#include "fileedit.h"
#include <assert.h>
#include <stdarg.h>

/*
** State for the "mini-checkin" infrastructure, which enables the
** ability to commit changes to a single file without a check-out
** db, e.g. for use via an HTTP request.
**
** Use CheckinMiniInfo_init() to cleanly initialize one to a known
** valid/empty default state.
**
** Memory for all non-const pointer members is owned by the
** CheckinMiniInfo instance, unless explicitly noted otherwise, and is
** freed by CheckinMiniInfo_cleanup(). Similarly, each instance owns
** any memory for its own Blob members, but NOT for its pointers to
** blobs.
*/
struct CheckinMiniInfo {
  Manifest * pParent;  /* parent check-in. Memory is owned by this
                          object. */
  char *zParentUuid;   /* Full UUID of pParent */
  char *zFilename;     /* Name of single file to commit. Must be
                          relative to the top of the repo. */
  Blob fileContent;    /* Content of file referred to by zFilename. */
  Blob fileHash;       /* Hash of this->fileContent, using the repo's
                          preferred hash method. */
  Blob comment;        /* Check-in comment text */
  char *zCommentMimetype;  /* Mimetype of comment. May be NULL */
  char *zUser;         /* User name */
  char *zDate;         /* Optionally force this date string (anything
                          supported by date_in_standard_format()).
                          Maybe be NULL. */
  Blob *pMfOut;        /* If not NULL, checkin_mini() will write a
                          copy of the generated manifest here. This
                          memory is NOT owned by CheckinMiniInfo. */
  int filePerm;        /* Permissions (via file_perm()) of the input
                          file. We need to store this before calling
                          checkin_mini() because the real input file
                          name may differ from the repo-centric
                          this->zFilename, and checkin_mini() requires
                          the permissions of the original file. For
                          web commits, set this to PERM_REG or (when
                          editing executable scripts) PERM_EXE before
                          calling checkin_mini(). */
  int flags;           /* Bitmask of fossil_cimini_flags. */
};
typedef struct CheckinMiniInfo CheckinMiniInfo;

/*
** CheckinMiniInfo::flags values.
*/
enum fossil_cimini_flags {
/*
** Must have a value of 0. All other flags have unspecified values.
*/
CIMINI_NONE = 0,
/*
** Tells checkin_mini() to use dry-run mode.
*/
CIMINI_DRY_RUN = 1,
/*
** Tells checkin_mini() to allow forking from a non-leaf commit.
*/
CIMINI_ALLOW_FORK = 1<<1,
/*
** Tells checkin_mini() to dump its generated manifest to stdout.
*/
CIMINI_DUMP_MANIFEST = 1<<2,

/*
** By default, content containing what appears to be a merge conflict
** marker is not permitted. This flag relaxes that requirement.
*/
CIMINI_ALLOW_MERGE_MARKER = 1<<3,

/*
** By default mini-checkins are not allowed to be "older"
** than their parent. i.e. they may not have a timestamp
** which predates their parent. This flag bypasses that
** check.
*/
CIMINI_ALLOW_OLDER = 1<<4,

/*
** Indicates that the content of the newly checked-in file is
** converted, if needed, to use the same EOL style as the previous
** version of that file. Only the in-memory/in-repo copies are
** affected, not the original file (if any).
*/
CIMINI_CONVERT_EOL_INHERIT = 1<<5,
/*
** Indicates that the input's EOLs should be converted to Unix-style.
*/
CIMINI_CONVERT_EOL_UNIX = 1<<6,
/*
** Indicates that the input's EOLs should be converted to Windows-style.
*/
CIMINI_CONVERT_EOL_WINDOWS = 1<<7,
/*
** A hint to checkin_mini() to "prefer" creation of a delta manifest.
** It may decide not to for various reasons.
*/
CIMINI_PREFER_DELTA = 1<<8,
/*
** A "stronger hint" to checkin_mini() to prefer creation of a delta
** manifest if it at all can. It will decide not to only if creation
** of a delta is not a realistic option or if it's forbitted by the
** forbid-delta-manifests repo config option. For this to work, it
** must be set together with the CIMINI_PREFER_DELTA flag, but the two
** cannot be combined in this enum.
**
** This option is ONLY INTENDED FOR TESTING, used in bypassing
** heuristics which may otherwise disable generation of a delta on the
** grounds of efficiency (e.g. not generating a delta if the parent
** non-delta only has a few F-cards).
*/
CIMINI_STRONGLY_PREFER_DELTA = 1<<9,
/*
** Tells checkin_mini() to permit the addition of a new file. Normally
** this is disabled because there are hypothetically many cases where
** it could cause the inadvertent addition of a new file when an
** update to an existing was intended, as a side-effect of name-case
** differences.
*/
CIMINI_ALLOW_NEW_FILE = 1<<10
};

/*
** Initializes p to a known-valid default state.
*/
static void CheckinMiniInfo_init( CheckinMiniInfo * p ){
  memset(p, 0, sizeof(CheckinMiniInfo));
  p->flags = CIMINI_NONE;
  p->filePerm = -1;
  p->comment = p->fileContent = p->fileHash = empty_blob;
}

/*
** Frees all memory owned by p, but does not free p.
 */
static void CheckinMiniInfo_cleanup( CheckinMiniInfo * p ){
  blob_reset(&p->comment);
  blob_reset(&p->fileContent);
  blob_reset(&p->fileHash);
  if(p->pParent){
    manifest_destroy(p->pParent);
  }
  fossil_free(p->zFilename);
  fossil_free(p->zDate);
  fossil_free(p->zParentUuid);
  fossil_free(p->zCommentMimetype);
  fossil_free(p->zUser);
  CheckinMiniInfo_init(p);
}

/*
** Internal helper which returns an F-card perms string suitable for
** writing as-is into a manifest. If it's not empty, it includes a
** leading space to separate it from the F-card's hash field.
*/
static const char * mfile_permint_mstring(int perm){
  switch(perm){
    case PERM_EXE: return " x";
    case PERM_LNK: return " l";
    default: return "";
  }
}

/*
** Given a ManifestFile permission string (or NULL), it returns one of
** PERM_REG, PERM_EXE, or PERM_LNK.
*/
static int mfile_permstr_int(const char *zPerm){
  if(!zPerm || !*zPerm) return PERM_REG;
  else if(strstr(zPerm,"x")) return PERM_EXE;
  else if(strstr(zPerm,"l")) return PERM_LNK;
  else return PERM_REG/*???*/;
}

/*
** Internal helper for checkin_mini() and friends. Appends an F-card
** for p to pOut.
*/
static void checkin_mini_append_fcard(Blob *pOut,
                                      const ManifestFile *p){
  if(p->zUuid){
    assert(*p->zUuid);
    blob_appendf(pOut, "F %F %s%s", p->zName,
                 p->zUuid,
                 mfile_permint_mstring(manifest_file_mperm(p)));
    if(p->zPrior){
      assert(*p->zPrior);
      blob_appendf(pOut, " %F\n", p->zPrior);
    }else{
      blob_append(pOut, "\n", 1);
    }
  }else{
    /* File was removed from parent delta. */
    blob_appendf(pOut, "F %F\n", p->zName);
  }
}

/*
** Handles the F-card parts for create_manifest_mini().
**
** If asDelta is true, F-cards will be handled as for a delta
** manifest, and the caller MUST have added a B-card to pOut before
** calling this.
**
** Returns 1 on success, 0 on error, and writes any error message to
** pErr (if it's not NULL). The only non-immediately-fatal/panic error
** is if pCI->filePerm is PERM_LNK or pCI would update a PERM_LNK
** in-repo file.
*/
static int create_manifest_mini_fcards( Blob * pOut,
                                        CheckinMiniInfo * pCI,
                                        int asDelta,
                                        Blob * pErr){
  int wroteThisCard = 0;
  const ManifestFile * pFile;
  int (*fncmp)(char const *, char const *) =  /* filename comparator */
    filenames_are_case_sensitive()
    ? fossil_strcmp
    : fossil_stricmp;
#define mf_err(EXPR) if(pErr) blob_appendf EXPR; return 0
#define write_this_card(NAME) \
  blob_appendf(pOut, "F %F %b%s\n", (NAME), &pCI->fileHash, \
               mfile_permint_mstring(pCI->filePerm)); \
  wroteThisCard = 1

  assert(pCI->filePerm!=PERM_LNK && "This should have been validated before.");
  assert(pCI->filePerm==PERM_REG || pCI->filePerm==PERM_EXE);
  if(PERM_LNK==pCI->filePerm){
    goto err_no_symlink;
  }
  manifest_file_rewind(pCI->pParent);
  if(asDelta!=0 && (pCI->pParent->zBaseline==0
                    || pCI->pParent->nFile==0)){
    /* Parent is a baseline or a delta with no F-cards, so this is
    ** the simplest case: create a delta with a single F-card.
    */
    pFile = manifest_file_find(pCI->pParent, pCI->zFilename);
    if(pFile!=0 && manifest_file_mperm(pFile)==PERM_LNK){
      goto err_no_symlink;
    }
    write_this_card(pFile ? pFile->zName : pCI->zFilename);
    return 1;
  }
  while(1){
    int cmp;
    if(asDelta==0){
      pFile = manifest_file_next(pCI->pParent, 0);
    }else{
      /* Parent is a delta manifest with F-cards. Traversal of delta
      ** manifest file entries is normally done via
      ** manifest_file_next(), which takes into account the
      ** differences between the delta and its parent and returns
      ** F-cards from both. Each successive delta from the same
      ** baseline includes all F-card changes from the previous
      ** deltas, so we instead clone the parent's F-cards except for
      ** the one (if any) which matches the new file.
      */
      pFile = pCI->pParent->iFile < pCI->pParent->nFile
        ? &pCI->pParent->aFile[pCI->pParent->iFile++]
        : 0;
    }
    if(0==pFile) break;
    cmp = fncmp(pFile->zName, pCI->zFilename);
    if(cmp<0){
      checkin_mini_append_fcard(pOut,pFile);
    }else{
      if(cmp==0 || 0==wroteThisCard){
        assert(0==wroteThisCard);
        if(PERM_LNK==manifest_file_mperm(pFile)){
          goto err_no_symlink;
        }
        write_this_card(cmp==0 ? pFile->zName : pCI->zFilename);
      }
      if(cmp>0){
        assert(wroteThisCard!=0);
        checkin_mini_append_fcard(pOut,pFile);
      }
    }
  }
  if(wroteThisCard==0){
    write_this_card(pCI->zFilename);
  }
  return 1;
err_no_symlink:
  mf_err((pErr,"Cannot commit or overwrite symlinks "
          "via mini-checkin."));
  return 0;
#undef write_this_card
#undef mf_err
}

/*
** Creates a manifest file, written to pOut, from the state in the
** fully-populated and semantically valid pCI argument. pCI is not
** *semantically* modified by this routine but cannot be const because
** blob_str() may need to NUL-terminate any given blob.
**
** Returns true on success. On error, returns 0 and, if pErr is not
** NULL, writes an error message there.
**
** Intended only to be called via checkin_mini() or routines which
** have already completely vetted pCI for semantic validity.
*/
static int create_manifest_mini( Blob * pOut, CheckinMiniInfo * pCI,
                                 Blob * pErr){
  Blob zCard = empty_blob;     /* Z-card checksum */
  int asDelta = 0;
#define mf_err(EXPR) if(pErr) blob_appendf EXPR; return 0

  assert(blob_str(&pCI->fileHash));
  assert(pCI->pParent);
  assert(pCI->zFilename);
  assert(pCI->zUser);
  assert(pCI->zDate);

  /* Potential TODOs include...
  **
  ** - Maybe add support for tags. Those can be edited via /info page,
  **   and feel like YAGNI/feature creep for this purpose.
  */
  blob_zero(pOut);
  manifest_file_rewind(pCI->pParent) /* force load of baseline */;
  /* Determine whether we want to create a delta manifest... */
  if((CIMINI_PREFER_DELTA & pCI->flags)
     && ((CIMINI_STRONGLY_PREFER_DELTA & pCI->flags)
         || (pCI->pParent->pBaseline
             ? pCI->pParent->pBaseline
             : pCI->pParent)->nFile > 15
         /* 15 is arbitrary: don't create a delta when there is only a
         ** tiny gain for doing so. That heuristic is not *quite*
         ** right, in that when we're deriving from another delta, we
         ** really should compare the F-card count between it and its
         ** baseline, and create a delta if the baseline has (say)
         ** twice or more as many F-cards as the previous delta. */)
     && !db_get_boolean("forbid-delta-manifests",0)
     ){
    asDelta = 1;
    blob_appendf(pOut, "B %s\n",
                 pCI->pParent->zBaseline
                 ? pCI->pParent->zBaseline
                 : pCI->zParentUuid);
  }
  if(blob_size(&pCI->comment)!=0){
    blob_appendf(pOut, "C %F\n", blob_str(&pCI->comment));
  }else{
    blob_append(pOut, "C (no\\scomment)\n", 16);
  }
  blob_appendf(pOut, "D %s\n", pCI->zDate);
  if(create_manifest_mini_fcards(pOut,pCI,asDelta,pErr)==0){
    return 0;
  }
  if(pCI->zCommentMimetype!=0 && pCI->zCommentMimetype[0]!=0){
    blob_appendf(pOut, "N %F\n", pCI->zCommentMimetype);
  }
  blob_appendf(pOut, "P %s\n", pCI->zParentUuid);
  blob_appendf(pOut, "U %F\n", pCI->zUser);
  md5sum_blob(pOut, &zCard);
  blob_appendf(pOut, "Z %b\n", &zCard);
  blob_reset(&zCard);
  return 1;
#undef mf_err
}

/*
** A so-called "single-file/mini/web check-in" is a slimmed-down form
** of the check-in command which accepts only a single file and is
** intended to accept edits to a file via the web interface or from
** the CLI from outside of a check-out.
**
** Being fully non-interactive is a requirement for this function,
** thus it cannot perform autosync or similar activities (which
** includes checking for repo locks).
**
** This routine uses the state from the given fully-populated pCI
** argument to add pCI->fileContent to the database, and create and
** save a manifest for that change. Ownership of pCI and its contents
** are unchanged.
**
** This function may may modify pCI as follows:
**
** - If one of Manifest pCI->pParent or pCI->zParentUuid are NULL,
**   then the other will be assigned based on its counterpart. Both
**   may not be NULL.
**
** - pCI->zDate is normalized to/replaced with a valid date/time
**   string. If its original value cannot be validated then
**   this function fails. If pCI->zDate is NULL, the current time
**   is used.
**
** - If the CIMINI_CONVERT_EOL_INHERIT flag is set,
**   pCI->fileContent appears to be plain text, and its line-ending
**   style differs from its previous version, it is converted to the
**   same EOL style as the previous version. If this is done, the
**   pCI->fileHash is re-computed. Note that only pCI->fileContent,
**   not the original file, is affected by the conversion.
**
** - Else if one of the CIMINI_CONVERT_EOL_WINDOWS or
**   CIMINI_CONVERT_EOL_UNIX flags are set, pCI->fileContent is
**   converted, if needed, to the corresponding EOL style.
**
** - If EOL conversion takes place, pCI->fileHash is re-calculated.
**
** - If pCI->fileHash is empty, this routine populates it with the
**   repository's preferred hash algorithm (after any EOL conversion).
**
** - pCI->comment may be converted to Unix-style newlines.
**
** pCI's ownership is not modified.
**
** This function validates pCI's state and fails if any validation
** fails.
**
** On error, returns false (0) and, if pErr is not NULL, writes a
** diagnostic message there.
**
** Returns true on success. If pRid is not NULL, the RID of the
** resulting manifest is written to *pRid.
**
** The check-in process is largely influenced by pCI->flags, and that
** must be populated before calling this. See the fossil_cimini_flags
** enum for the docs for each flag.
*/
static int checkin_mini(CheckinMiniInfo * pCI, int *pRid, Blob * pErr){
  Blob mf = empty_blob;             /* output manifest */
  int rid = 0, frid = 0;            /* various RIDs */
  int isPrivate;                    /* whether this is private content
                                       or not */
  ManifestFile * zFilePrev;         /* file entry from pCI->pParent */
  int prevFRid = 0;                 /* RID of file's prev. version */
#define ci_err(EXPR) if(pErr!=0){blob_appendf EXPR;} goto ci_error

  db_begin_transaction();
  if(pCI->pParent==0 && pCI->zParentUuid==0){
    ci_err((pErr, "Cannot determine parent version."));
  }
  else if(pCI->pParent==0){
    pCI->pParent = manifest_get_by_name(pCI->zParentUuid, 0);
    if(pCI->pParent==0){
      ci_err((pErr,"Cannot load manifest for [%S].", pCI->zParentUuid));
    }
  }else if(pCI->zParentUuid==0){
    pCI->zParentUuid = rid_to_uuid(pCI->pParent->rid);
    assert(pCI->zParentUuid);
  }
  assert(pCI->pParent->rid>0);
  if(leaf_is_closed(pCI->pParent->rid)){
    ci_err((pErr,"Cannot commit to a closed leaf."));
    /* Remember that in order to override this we'd also need to
    ** cancel TAG_CLOSED on pCI->pParent. There would seem to be no
    ** reason we can't do that via the generated manifest, but the
    ** commit command does not offer that option, so mini-checkin
    ** probably shouldn't, either.
    */
  }
  if( !db_exists("SELECT 1 FROM user WHERE login=%Q", pCI->zUser) ){
    ci_err((pErr,"No such user: %s", pCI->zUser));
  }
  if(!(CIMINI_ALLOW_FORK & pCI->flags)
     && !is_a_leaf(pCI->pParent->rid)){
    ci_err((pErr,"Parent [%S] is not a leaf and forking is disabled.",
            pCI->zParentUuid));
  }
  if(!(CIMINI_ALLOW_MERGE_MARKER & pCI->flags)
     && contains_merge_marker(&pCI->fileContent)){
    ci_err((pErr,"Content appears to contain a merge conflict marker."));
  }
  if(!file_is_simple_pathname(pCI->zFilename, 1)){
    ci_err((pErr,"Invalid filename for use in a repository: %s",
            pCI->zFilename));
  }
  if(!(CIMINI_ALLOW_OLDER & pCI->flags)
     && !checkin_is_younger(pCI->pParent->rid, pCI->zDate)){
    ci_err((pErr,"Check-in time (%s) may not be older "
            "than its parent (%z).",
            pCI->zDate,
            db_text(0, "SELECT strftime('%%Y-%%m-%%dT%%H:%%M:%%f',%lf)",
                    pCI->pParent->rDate)
            ));
  }
  {
    /*
    ** Normalize the timestamp. We don't use date_in_standard_format()
    ** because that has side-effects we don't want to trigger here.
    */
    char * zDVal = db_text(
         0, "SELECT strftime('%%Y-%%m-%%dT%%H:%%M:%%f',%Q)",
         pCI->zDate ? pCI->zDate : "now");
    if(zDVal==0 || zDVal[0]==0){
      fossil_free(zDVal);
      ci_err((pErr,"Invalid timestamp string: %s", pCI->zDate));
    }
    fossil_free(pCI->zDate);
    pCI->zDate = zDVal;
  }
  { /* Confirm that only one EOL policy is in place. */
    int n = 0;
    if(CIMINI_CONVERT_EOL_INHERIT & pCI->flags) ++n;
    if(CIMINI_CONVERT_EOL_UNIX & pCI->flags) ++n;
    if(CIMINI_CONVERT_EOL_WINDOWS & pCI->flags) ++n;
    if(n>1){
      ci_err((pErr,"More than 1 EOL conversion policy was specified."));
    }
  }
  /* Potential TODOs include:
  **
  ** - Commit allows an empty check-in only with a flag, but we
  **   currently disallow an empty check-in entirely. Conform with
  **   commit?
  **
  ** Non-TODOs:
  **
  ** - Check for a commit lock would require auto-sync, which this
  **   code cannot do if it's going to be run via a web page.
  */

  /*
  ** Confirm that pCI->zFilename can be found in pCI->pParent.  If
  ** not, fail unless the CIMINI_ALLOW_NEW_FILE flag is set. This is
  ** admittedly an artificial limitation, not strictly necessary. We
  ** do it to hopefully reduce the chance of an "oops" where file
  ** X/Y/z gets committed as X/Y/Z or X/y/z due to a typo or
  ** case-sensitivity mismatch between the user/repo/filesystem, or
  ** some such.
  */
  manifest_file_rewind(pCI->pParent);
  zFilePrev = manifest_file_find(pCI->pParent, pCI->zFilename);
  if(!(CIMINI_ALLOW_NEW_FILE & pCI->flags)
     && (!zFilePrev
         || !zFilePrev->zUuid/*was removed from parent delta manifest*/)
     ){
    ci_err((pErr,"File [%s] not found in manifest [%S]. "
            "Adding new files is currently not permitted.",
            pCI->zFilename, pCI->zParentUuid));
  }else if(zFilePrev
           && manifest_file_mperm(zFilePrev)==PERM_LNK){
    ci_err((pErr,"Cannot save a symlink via a mini-checkin."));
  }
  if(zFilePrev){
    prevFRid = fast_uuid_to_rid(zFilePrev->zUuid);
  }

  if(((CIMINI_CONVERT_EOL_INHERIT & pCI->flags)
      || (CIMINI_CONVERT_EOL_UNIX & pCI->flags)
      || (CIMINI_CONVERT_EOL_WINDOWS & pCI->flags))
     && blob_size(&pCI->fileContent)>0
     ){
    /* Convert to the requested EOL style. Note that this inherently
    ** runs a risk of breaking content, e.g. string literals which
    ** contain embedded newlines. Note that HTML5 specifies that
    ** form-submitted TEXTAREA content gets normalized to CRLF-style:
    **
    ** https://html.spec.whatwg.org/#the-textarea-element
    */
    const int pseudoBinary = LOOK_LONG | LOOK_NUL;
    const int lookFlags = LOOK_CRLF | LOOK_LONE_LF | pseudoBinary;
    const int lookNew = looks_like_utf8( &pCI->fileContent, lookFlags );
    if(!(pseudoBinary & lookNew)){
      int rehash = 0;
      /*fossil_print("lookNew=%08x\n",lookNew);*/
      if(CIMINI_CONVERT_EOL_INHERIT & pCI->flags){
        Blob contentPrev = empty_blob;
        int lookOrig, nOrig;
        content_get(prevFRid, &contentPrev);
        lookOrig = looks_like_utf8(&contentPrev, lookFlags);
        nOrig = blob_size(&contentPrev);
        blob_reset(&contentPrev);
        /*fossil_print("lookOrig=%08x\n",lookOrig);*/
        if(nOrig>0 && lookOrig!=lookNew){
          /* If there is a newline-style mismatch, adjust the new
          ** content version to the previous style, then re-hash the
          ** content. Note that this means that what we insert is NOT
          ** what's in the filesystem.
          */
          if(!(lookOrig & LOOK_CRLF) && (lookNew & LOOK_CRLF)){
            /* Old has Unix-style, new has Windows-style. */
            blob_to_lf_only(&pCI->fileContent);
            rehash = 1;
          }else if((lookOrig & LOOK_CRLF) && !(lookNew & LOOK_CRLF)){
            /* Old has Windows-style, new has Unix-style. */
            blob_add_cr(&pCI->fileContent);
            rehash = 1;
          }
        }
      }else{
        const int oldSize = blob_size(&pCI->fileContent);
        if(CIMINI_CONVERT_EOL_UNIX & pCI->flags){
          if(LOOK_CRLF & lookNew){
            blob_to_lf_only(&pCI->fileContent);
          }
        }else{
          assert(CIMINI_CONVERT_EOL_WINDOWS & pCI->flags);
          if(!(LOOK_CRLF & lookNew)){
            blob_add_cr(&pCI->fileContent);
          }
        }
        if((int)blob_size(&pCI->fileContent)!=oldSize){
          rehash = 1;
        }
      }
      if(rehash!=0){
        hname_hash(&pCI->fileContent, 0, &pCI->fileHash);
      }
    }
  }/* end EOL conversion */

  if(blob_size(&pCI->fileHash)==0){
    /* Hash the content if it's not done already... */
    hname_hash(&pCI->fileContent, 0, &pCI->fileHash);
    assert(blob_size(&pCI->fileHash)>0);
  }
  if(zFilePrev){
    /* Has this file been changed since its previous commit?  Note
    ** that we have to delay this check until after the potentially
    ** expensive EOL conversion. */
    assert(blob_size(&pCI->fileHash));
    if(0==fossil_strcmp(zFilePrev->zUuid, blob_str(&pCI->fileHash))
       && manifest_file_mperm(zFilePrev)==pCI->filePerm){
      ci_err((pErr,"File is unchanged. Not committing."));
    }
  }
#if 1
  /* Do we really want to normalize comment EOLs? Web-posting will
  ** submit them in CRLF or LF format, depending on how exactly the
  ** content is submitted (FORM (CRLF) or textarea-to-POST (LF, at
  ** least in theory)). */
  blob_to_lf_only(&pCI->comment);
#endif
  /* Create, save, deltify, and crosslink the manifest... */
  if(create_manifest_mini(&mf, pCI, pErr)==0){
    return 0;
  }
  isPrivate = content_is_private(pCI->pParent->rid);
  rid = content_put_ex(&mf, 0, 0, 0, isPrivate);
  if(pCI->flags & CIMINI_DUMP_MANIFEST){
    fossil_print("%b", &mf);
  }
  if(pCI->pMfOut!=0){
    /* Cross-linking clears mf, so we have to copy it,
    ** instead of taking over its memory. */
    blob_reset(pCI->pMfOut);
    blob_append(pCI->pMfOut, blob_buffer(&mf), blob_size(&mf));
  }
  content_deltify(rid, &pCI->pParent->rid, 1, 0);
  manifest_crosslink(rid, &mf, 0);
  blob_reset(&mf);
  /* Save and deltify the file content... */
  frid = content_put_ex(&pCI->fileContent, blob_str(&pCI->fileHash),
                        0, 0, isPrivate);
  if(zFilePrev!=0){
    assert(prevFRid>0);
    content_deltify(frid, &prevFRid, 1, 0);
  }
  db_end_transaction((CIMINI_DRY_RUN & pCI->flags) ? 1 : 0);
  if(pRid!=0){
    *pRid = rid;
  }
  return 1;
ci_error:
  assert(db_transaction_nesting_depth()>0);
  db_end_transaction(1);
  return 0;
#undef ci_err
}

/*
** COMMAND: test-ci-mini
**
** This is an on-going experiment, subject to change or removal at
** any time.
**
** Usage: %fossil test-ci-mini ?OPTIONS? FILENAME
**
** where FILENAME is a repo-relative name as it would appear in the
** vfile table.
**
** Options:
**   -R|--repository REPO      The repository file to commit to
**   --as FILENAME             The repository-side name of the input
**                             file, relative to the top of the
**                             repository. Default is the same as the
**                             input file name.
**   -m|--comment COMMENT      Required check-in comment
**   -M|--comment-file FILE    Reads check-in comment from the given file
**   -r|--revision VERSION     Commit from this version. Default is
**                             the check-out version (if available) or
**                             trunk (if used without a check-out).
**   --allow-fork              Allows the commit to be made against a
**                             non-leaf parent. Note that no autosync
**                             is performed beforehand.
**   --allow-merge-conflict    Allows check-in of a file even if it
**                             appears to contain a fossil merge conflict
**                             marker
**   --user-override USER      USER to use instead of the current
**                             default
**   --date-override DATETIME  DATE to use instead of 'now'
**   --allow-older             Allow a commit to be older than its
**                             ancestor
**   --convert-eol-inherit     Convert EOL style of the check-in to match
**                             the previous version's content
**   --convert-eol-unix        Convert the EOL style to Unix
**   --convert-eol-windows     Convert the EOL style to Windows.
**   (Only one of the --convert-eol-X options may be used and they only
**    modified the saved blob, not the input file.)
**   --delta                   Prefer to generate a delta manifest, if
**                             able. The forbid-delta-manifests repo
**                             config option trumps this, as do certain
**                             heuristics.
**   --allow-new-file          Allow addition of a new file this way.
**                             Disabled by default to avoid that case-
**                             sensitivity errors inadvertently lead to
**                             adding a new file where an update is
**                             intended.
**   -d|--dump-manifest        Dumps the generated manifest to stdout
**                             immediately after it's generated
**   --save-manifest FILE      Saves the generated manifest to a file
**                             after successfully processing it
**   --wet-run                 Disables the default dry-run mode
**
** Example:
**
** %fossil test-ci-mini -R REPO -m ... -r foo --as src/myfile.c myfile.c
**
*/
void test_ci_mini_cmd(void){
  CheckinMiniInfo cimi;       /* check-in state */
  int newRid = 0;                /* RID of new version */
  const char * zFilename;        /* argv[2] */
  const char * zComment;         /* -m comment */
  const char * zCommentFile;     /* -M FILE */
  const char * zAsFilename;      /* --as filename */
  const char * zRevision;        /* -r|--revision [=trunk|checkout] */
  const char * zUser;            /* --user-override */
  const char * zDate;            /* --date-override */
  char const * zManifestFile = 0;/* --save-manifest FILE */

  /* This function should perform only the minimal "business logic" it
  ** needs in order to fully/properly populate the CheckinMiniInfo and
  ** then pass it on to checkin_mini() to do most of the validation
  ** and work. The point of this is to avoid duplicate code when a web
  ** front-end is added for checkin_mini().
  */
  CheckinMiniInfo_init(&cimi);
  zComment = find_option("comment","m",1);
  zCommentFile = find_option("comment-file","M",1);
  zAsFilename = find_option("as",0,1);
  zRevision = find_option("revision","r",1);
  zUser = find_option("user-override",0,1);
  zDate = find_option("date-override",0,1);
  zManifestFile = find_option("save-manifest",0,1);
  if(find_option("wet-run",0,0)==0){
    cimi.flags |= CIMINI_DRY_RUN;
  }
  if(find_option("allow-fork",0,0)!=0){
    cimi.flags |= CIMINI_ALLOW_FORK;
  }
  if(find_option("dump-manifest","d",0)!=0){
    cimi.flags |= CIMINI_DUMP_MANIFEST;
  }
  if(find_option("allow-merge-conflict",0,0)!=0){
    cimi.flags |= CIMINI_ALLOW_MERGE_MARKER;
  }
  if(find_option("allow-older",0,0)!=0){
    cimi.flags |= CIMINI_ALLOW_OLDER;
  }
  if(find_option("convert-eol-inherit",0,0)!=0){
    cimi.flags |= CIMINI_CONVERT_EOL_INHERIT;
  }else if(find_option("convert-eol-unix",0,0)!=0){
    cimi.flags |= CIMINI_CONVERT_EOL_UNIX;
  }else if(find_option("convert-eol-windows",0,0)!=0){
    cimi.flags |= CIMINI_CONVERT_EOL_WINDOWS;
  }
  if(find_option("delta",0,0)!=0){
    cimi.flags |= CIMINI_PREFER_DELTA;
  }
  if(find_option("delta2",0,0)!=0){
    /* Undocumented. For testing only. */
    cimi.flags |= CIMINI_PREFER_DELTA | CIMINI_STRONGLY_PREFER_DELTA;
  }
  if(find_option("allow-new-file",0,0)!=0){
    cimi.flags |= CIMINI_ALLOW_NEW_FILE;
  }
  db_find_and_open_repository(0, 0);
  verify_all_options();
  user_select();
  if(g.argc!=3){
    usage("INFILE");
  }
  if(zComment && zCommentFile){
    fossil_fatal("Only one of -m or -M, not both, may be used.");
  }else{
    if(zCommentFile && *zCommentFile){
      blob_read_from_file(&cimi.comment, zCommentFile, ExtFILE);
    }else if(zComment && *zComment){
      blob_append(&cimi.comment, zComment, -1);
    }
    if(!blob_size(&cimi.comment)){
      fossil_fatal("Non-empty check-in comment is required.");
    }
  }
  db_begin_transaction();
  zFilename = g.argv[2];
  cimi.zFilename = mprintf("%/", zAsFilename ? zAsFilename : zFilename);
  cimi.filePerm = file_perm(zFilename, ExtFILE);
  cimi.zUser = mprintf("%s", zUser ? zUser : login_name());
  if(zDate){
    cimi.zDate = mprintf("%s", zDate);
  }
  if(zRevision==0 || zRevision[0]==0){
    if(g.localOpen/*check-out*/){
      zRevision = db_lget("checkout-hash", 0)/*leak*/;
    }else{
      zRevision = "trunk";
    }
  }
  name_to_uuid2(zRevision, "ci", &cimi.zParentUuid);
  if(cimi.zParentUuid==0){
    fossil_fatal("Cannot determine version to commit to.");
  }
  blob_read_from_file(&cimi.fileContent, zFilename, ExtFILE);
  {
    Blob theManifest = empty_blob; /* --save-manifest target */
    Blob errMsg = empty_blob;
    int rc;
    if(zManifestFile){
      cimi.pMfOut = &theManifest;
    }
    rc = checkin_mini(&cimi, &newRid, &errMsg);
    if(rc){
      assert(blob_size(&errMsg)==0);
    }else{
      assert(blob_size(&errMsg));
      fossil_fatal("%b", &errMsg);
    }
    if(zManifestFile){
      fossil_print("Writing manifest to: %s\n", zManifestFile);
      assert(blob_size(&theManifest)>0);
      blob_write_to_file(&theManifest, zManifestFile);
      blob_reset(&theManifest);
    }
  }
  if(newRid!=0){
    fossil_print("New version%s: %z\n",
                 (cimi.flags & CIMINI_DRY_RUN) ? " (dry run)" : "",
                 rid_to_uuid(newRid));
  }
  db_end_transaction(0/*checkin_mini() will have triggered it to roll
                      ** back in dry-run mode, but we need access to
                      ** the transaction-written db state in this
                      ** routine.*/);
  if(!(cimi.flags & CIMINI_DRY_RUN) && newRid!=0 && g.localOpen!=0){
    fossil_warning("The check-out state is now out of sync "
                   "with regards to this commit. It needs to be "
                   "'update'd or 'close'd and re-'open'ed.");
  }
  CheckinMiniInfo_cleanup(&cimi);
}

/*
** If the fileedit-glob setting has a value, this returns its Glob
** object (in memory owned by this function), else it returns NULL.
*/
Glob *fileedit_glob(void){
  static Glob * pGlobs = 0;
  static int once = 0;
  if(0==pGlobs && once==0){
    char * zGlobs = db_get("fileedit-glob",0);
    once = 1;
    if(0!=zGlobs && 0!=*zGlobs){
      pGlobs = glob_create(zGlobs);
    }
    fossil_free(zGlobs);
  }
  return pGlobs;
}

/*
** Returns true if the given filename qualifies for online editing by
** the current user, else returns false.
**
** Editing requires that the user have the Write permission and that
** the filename match the glob defined by the fileedit-glob setting.
** A missing or empty value for that glob disables all editing.
*/
int fileedit_is_editable(const char *zFilename){
  Glob * pGlobs = fileedit_glob();
  if(pGlobs!=0 && zFilename!=0 && *zFilename!=0 && 0!=g.perm.Write){
    return glob_match(pGlobs, zFilename);
  }else{
    return 0;
  }
}

/*
** Given a repo-relative filename and a manifest RID, returns the UUID
** of the corresponding file entry.  Returns NULL if no match is
** found.  If pFilePerm is not NULL, the file's permission flag value
** is written to *pFilePerm.
*/
static char *fileedit_file_uuid(char const *zFilename,
                                int vid, int *pFilePerm){
  Stmt stmt = empty_Stmt;
  char * zFileUuid = 0;
  db_prepare(&stmt, "SELECT uuid, perm FROM files_of_checkin "
             "WHERE filename=%Q %s AND checkinID=%d",
             zFilename, filename_collation(), vid);
  if(SQLITE_ROW==db_step(&stmt)){
    zFileUuid = mprintf("%s",db_column_text(&stmt, 0));
    if(pFilePerm){
      *pFilePerm = mfile_permstr_int(db_column_text(&stmt, 1));
    }
  }
  db_finalize(&stmt);
  return zFileUuid;
}

/*
** Returns true if the current user is allowed to edit the given
** filename, as determined by fileedit_is_editable(), else false,
** in which case it queues up an error response and the caller
** must return immediately.
*/
static int fileedit_ajax_check_filename(const char * zFilename){
  if(0==fileedit_is_editable(zFilename)){
    ajax_route_error(403, "File is disallowed by the "
                     "fileedit-glob setting.");
    return 0;
  }
  return 1;
}

/*
** Passed the values of the "checkin" and "filename" request
** properties, this function verifies that they are valid and
** populates:
**
** - *zRevUuid = the fully-expanded value of zRev (owned by the
**    caller). zRevUuid may be NULL.
**
** - *pVid = the RID of zRevUuid. pVid May be NULL. If the vid
**    cannot be resolved or is ambiguous, pVid is not assigned.
**
** - *frid = the RID of zFilename's blob content. May not be NULL
**   unless zFilename is also NULL. If BOTH of zFilename and frid are
**   NULL then no confirmation is done on the filename argument - only
**   zRev is checked.
**
** Returns 0 if the given file is not in the given check-in or if
** fileedit_ajax_check_filename() fails, else returns true.  If it
** returns false, it queues up an error response and the caller must
** return immediately.
*/
static int fileedit_ajax_setup_filerev(const char * zRev,
                                       char ** zRevUuid,
                                       int * pVid,
                                       const char * zFilename,
                                       int * frid){
  char * zFileUuid = 0;             /* file content UUID */
  const int checkFile = zFilename!=0 || frid!=0;
  int vid = 0;

  if(checkFile && !fileedit_ajax_check_filename(zFilename)){
    return 0;
  }
  vid = symbolic_name_to_rid(zRev, "ci");
  if(0==vid){
    ajax_route_error(404,"Cannot resolve name as a check-in: %s",
                     zRev);
    return 0;
  }else if(vid<0){
    ajax_route_error(400,"Check-in name is ambiguous: %s",
                     zRev);
    return 0;
  }else if(pVid!=0){
    *pVid = vid;
  }
  if(checkFile){
    zFileUuid = fileedit_file_uuid(zFilename, vid, 0);
    if(zFileUuid==0){
      ajax_route_error(404, "Check-in does not contain file.");
      return 0;
    }
  }
  if(zRevUuid!=0){
    *zRevUuid = rid_to_uuid(vid);
  }
  if(checkFile){
    assert(zFileUuid!=0);
    if(frid!=0){
      *frid = fast_uuid_to_rid(zFileUuid);
    }
    fossil_free(zFileUuid);
  }
  return 1;
}

/*
** AJAX route /fileedit?ajax=content
**
** Query parameters:
**
** filename=FILENAME
** checkin=CHECKIN_NAME
**
** User must have Write access to use this page.
**
** Responds with the raw content of the given page. On error it
** produces a JSON response as documented for ajax_route_error().
**
** Extra response headers:
**
** x-fileedit-file-perm: empty or "x" or "l", representing PERM_REG,
** PERM_EXE, or PERM_LINK, respectively.
**
** x-fileedit-checkin-branch: branch name for the passed-in check-in.
*/
static void fileedit_ajax_content(void){
  const char * zFilename = 0;
  const char * zRev = 0;
  int vid, frid;
  Blob content = empty_blob;
  const char * zMime;

  ajax_get_fnci_args( &zFilename, &zRev );
  if(!ajax_route_bootstrap(1,0)
     || !fileedit_ajax_setup_filerev(zRev, 0, &vid,
                                     zFilename, &frid)){
    return;
  }
  zMime = mimetype_from_name(zFilename);
  content_get(frid, &content);
  if(0==zMime){
    if(looks_like_binary(&content)){
      zMime = "application/octet-stream";
    }else{
      zMime = "text/plain";
    }
  }
  { /* Send the is-exec bit via response header so that the UI can be
    ** updated to account for that. */
    int fperm = 0;
    char * zFuuid = fileedit_file_uuid(zFilename, vid, &fperm);
    const char * zPerm = mfile_permint_mstring(fperm);
    assert(zFuuid);
    cgi_printf_header("x-fileedit-file-perm:%s\r\n", zPerm);
    fossil_free(zFuuid);
  }
  { /* Send branch name via response header for UI usability reasons */
    char * zBranch = branch_of_rid(vid);
    if(zBranch!=0 && zBranch[0]!=0){
      cgi_printf_header("x-fileedit-checkin-branch: %s\r\n", zBranch);
    }
    fossil_free(zBranch);
  }
  cgi_set_content_type(zMime);
  cgi_set_content(&content);
}

/*
** AJAX route /fileedit?ajax=diff
**
** Required query parameters:
**
** filename=FILENAME
** content=text
** checkin=check-in version
**
** Optional parameters:
**
** sbs=integer (1=side-by-side or 0=unified, default=0)
**
** ws=integer (0=diff whitespace, 1=ignore EOL ws, 2=ignore all ws)
**
** Reminder to self: search info.c for isPatch to see how a
** patch-style siff can be produced.
**
** User must have Write access to use this page.
**
** Responds with the HTML content of the diff. On error it produces a
** JSON response as documented for ajax_route_error().
*/
static void fileedit_ajax_diff(void){
  /*
  ** Reminder: we only need the filename to perform valdiation
  ** against fileedit_is_editable(), else this route could be
  ** abused to get diffs against content disallowed by the
  ** whitelist.
  */
  const char * zFilename = 0;
  const char * zRev = 0;
  const char * zContent = P("content");
  char * zRevUuid = 0;
  int vid, frid, iFlag;
  u64 diffFlags = DIFF_HTML | DIFF_NOTTOOBIG;
  Blob content = empty_blob;

  iFlag = atoi(PD("sbs","0"));
  if(0==iFlag){
    diffFlags |= DIFF_LINENO;
  }else{
    diffFlags |= DIFF_SIDEBYSIDE;
  }
  iFlag = atoi(PD("ws","2"));
  if(2==iFlag){
    diffFlags |= DIFF_IGNORE_ALLWS;
  }else if(1==iFlag){
    diffFlags |= DIFF_IGNORE_EOLWS;
  }
  diffFlags |= DIFF_STRIP_EOLCR;
  ajax_get_fnci_args( &zFilename, &zRev );
  if(!ajax_route_bootstrap(1,1)
     || !fileedit_ajax_setup_filerev(zRev, &zRevUuid, &vid,
                                     zFilename, &frid)){
    return;
  }
  if(!zContent){
    zContent = "";
  }
  cgi_set_content_type("text/html");
  blob_init(&content, zContent, -1);
  {
    Blob orig = empty_blob;
    char * const zOrigUuid = rid_to_uuid(frid);
    content_get(frid, &orig);
    ajax_render_diff(&orig, zOrigUuid, &content, diffFlags);
    fossil_free(zOrigUuid);
    blob_reset(&orig);
  }
  fossil_free(zRevUuid);
  blob_reset(&content);
}

/*
** Sets up and validates most, but not all, of p's check-in-related
** state from the CGI environment. Returns 0 on success or a suggested
** HTTP result code on error, in which case a message will have been
** written to pErr.
**
** It always fails if it cannot completely resolve the 'file' and 'r'
** parameters, including verifying that the refer to a real
** file/version combination and editable by the current user. All
** others are optional (at this level, anyway, but upstream code might
** require them).
**
** If the 3rd argument is not NULL and an error is related to a
** missing arg then *bIsMissingArg is set to true. This is
** intended to allow /fileedit to squelch certain initialization
** errors.
**
** Intended to be used only by /filepage and /filepage_commit.
*/
static int fileedit_setup_cimi_from_p(CheckinMiniInfo * p, Blob * pErr,
                                      int * bIsMissingArg){
  char * zFileUuid = 0;          /* UUID of file content */
  const char * zFlag;            /* generic flag */
  int rc = 0, vid = 0, frid = 0; /* result code, check-in/file rids */

#define fail(EXPR) blob_appendf EXPR; goto end_fail
  zFlag = PD("filename",P("fn"));
  if(zFlag==0 || !*zFlag){
    rc = 400;
    if(bIsMissingArg){
      *bIsMissingArg = 1;
    }
    fail((pErr,"Missing required 'filename' parameter."));
  }
  p->zFilename = mprintf("%s",zFlag);

  if(0==fileedit_is_editable(p->zFilename)){
    rc = 403;
    fail((pErr,"Filename [%h] is disallowed "
          "by the [fileedit-glob] repository "
          "setting.",
          p->zFilename));
  }

  zFlag = PD("checkin",P("ci"));
  if(!zFlag){
    rc = 400;
    if(bIsMissingArg){
      *bIsMissingArg = 1;
    }
    fail((pErr,"Missing required 'checkin' parameter."));
  }
  vid = symbolic_name_to_rid(zFlag, "ci");
  if(0==vid){
    rc = 404;
    fail((pErr,"Could not resolve check-in version."));
  }else if(vid<0){
    rc = 400;
    fail((pErr,"Check-in name is ambiguous."));
  }
  p->zParentUuid = rid_to_uuid(vid)/*fully expand it*/;

  zFileUuid = fileedit_file_uuid(p->zFilename, vid, &p->filePerm);
  if(!zFileUuid){
    rc = 404;
    fail((pErr,"Check-in [%S] does not contain file: "
          "[%h]", p->zParentUuid, p->zFilename));
  }else if(PERM_LNK==p->filePerm){
    rc = 400;
    fail((pErr,"Editing symlinks is not permitted."));
  }

  /* Find the repo-side file entry or fail... */
  frid = fast_uuid_to_rid(zFileUuid);
  assert(frid);

  /* Read file content from submit request or repo... */
  zFlag = P("content");
  if(zFlag==0){
    content_get(frid, &p->fileContent);
  }else{
    blob_init(&p->fileContent,zFlag,-1);
  }
  if(looks_like_binary(&p->fileContent)){
    rc = 400;
    fail((pErr,"File appears to be binary. Cannot edit: "
          "[%h]",p->zFilename));
  }

  zFlag = PT("comment");
  if(zFlag!=0 && *zFlag!=0){
    blob_append(&p->comment, zFlag, -1);
  }
  zFlag = P("comment_mimetype");
  if(zFlag){
    p->zCommentMimetype = mprintf("%s",zFlag);
    zFlag = 0;
  }
#define p_int(K) atoi(PD(K,"0"))
  if(p_int("dry_run")!=0){
    p->flags |= CIMINI_DRY_RUN;
  }
  if(p_int("allow_fork")!=0){
    p->flags |= CIMINI_ALLOW_FORK;
  }
  if(p_int("allow_older")!=0){
    p->flags |= CIMINI_ALLOW_OLDER;
  }
  if(0==p_int("exec_bit")){
    p->filePerm = PERM_REG;
  }else{
    p->filePerm = PERM_EXE;
  }
  if(p_int("allow_merge_conflict")!=0){
    p->flags |= CIMINI_ALLOW_MERGE_MARKER;
  }
  if(p_int("prefer_delta")!=0){
    p->flags |= CIMINI_PREFER_DELTA;
  }

  /* EOL conversion policy... */
  switch(p_int("eol")){
    case 1: p->flags |= CIMINI_CONVERT_EOL_UNIX; break;
    case 2: p->flags |= CIMINI_CONVERT_EOL_WINDOWS; break;
    default: p->flags |= CIMINI_CONVERT_EOL_INHERIT; break;
  }
#undef p_int
  /*
  ** TODO?: date-override date selection field. Maybe use
  ** an input[type=datetime-local].
  */
  p->zUser = mprintf("%s",g.zLogin);
  return 0;
end_fail:
#undef fail
  fossil_free(zFileUuid);
  return rc ? rc : 500;
}

/*
** Renders a list of all open leaves in JSON form:
**
** [
**   {checkin: UUID, branch: branchName, timestamp: string}
** ]
**
** The entries are ordered newest first.
**
** If zFirstUuid is not NULL then *zFirstUuid is set to a copy of the
** full UUID of the first (most recent) leaf, which must be freed by
** the caller. It is set to 0 if there are no leaves.
*/
static void fileedit_render_leaves_list(char ** zFirstUuid){
  Blob sql = empty_blob;
  Stmt q = empty_Stmt;
  int i = 0;

  if(zFirstUuid){
    *zFirstUuid = 0;
  }
  blob_append(&sql, timeline_query_for_tty(), -1);
  blob_append_sql(&sql, " AND blob.rid IN (SElECT rid FROM leaf "
                  "WHERE NOT EXISTS("
                  "SELECT 1 from tagxref WHERE tagid=%d AND "
                  "tagtype>0 AND rid=leaf.rid"
                  ")) "
                  "ORDER BY mtime DESC", TAG_CLOSED);
  db_prepare_blob(&q, &sql);
  CX("[");
  while( SQLITE_ROW==db_step(&q) ){
    const char * zUuid = db_column_text(&q, 1);
    if(i++){
      CX(",");
    }else if(zFirstUuid){
      *zFirstUuid = fossil_strdup(zUuid);
    }
    CX("{");
    CX("\"checkin\":%!j,", zUuid);
    CX("\"branch\":%!j,", db_column_text(&q, 7));
    CX("\"timestamp\":%!j", db_column_text(&q, 2));
    CX("}");
  }
  CX("]");
  db_finalize(&q);
}

/*
** For the given fully resolved UUID, renders a JSON object containing
** the fileeedit-editable files in that check-in:
**
** {
**   checkin: UUID,
**   editableFiles: [ filename1, ... filenameN ]
** }
**
** They are sorted by name using filename_collation().
*/
static void fileedit_render_checkin_files(const char * zFullUuid){
  Blob sql = empty_blob;
  Stmt q = empty_Stmt;
  int i = 0;

  CX("{\"checkin\":%!j,"
     "\"editableFiles\":[", zFullUuid);
  blob_append_sql(&sql, "SELECT filename FROM files_of_checkin(%Q) "
                  "ORDER BY filename %s",
                  zFullUuid, filename_collation());
  db_prepare_blob(&q, &sql);
  while( SQLITE_ROW==db_step(&q) ){
    const char * zFilename = db_column_text(&q, 0);
    if(fileedit_is_editable(zFilename)){
      if(i++){
        CX(",");
      }
      CX("%!j", zFilename);
    }
  }
  db_finalize(&q);
  CX("]}");
}

/*
** AJAX route /fileedit?ajax=filelist
**
** Fetches a JSON-format list of leaves and/or filenames for use in
** creating a file selection list in /fileedit. It has different modes
** of operation depending on its arguments:
**
** 'leaves': just fetch a list of open leaf versions, in this
** format:
**
** [
**   {checkin: UUID, branch: branchName, timestamp: string}
** ]
**
** The entries are ordered newest first.
**
** 'checkin=CHECKIN_NAME': fetch the current list of is-editable files
** for the current user and given check-in name:
**
** {
**   checkin: UUID,
**   editableFiles: [ filename1, ... filenameN ] // sorted by name
** }
**
** On error it produces a JSON response as documented for
** ajax_route_error().
*/
static void fileedit_ajax_filelist(){
  const char * zCi = PD("checkin",P("ci"));

  if(!ajax_route_bootstrap(1,0)){
    return;
  }
  cgi_set_content_type("application/json");
  if(zCi!=0){
    char * zCiFull = 0;
    if(0==fileedit_ajax_setup_filerev(zCi, &zCiFull, 0, 0, 0)){
      /* Error already reported */
      return;
    }
    fileedit_render_checkin_files(zCiFull);
    fossil_free(zCiFull);
  }else if(P("leaves")!=0){
    fileedit_render_leaves_list(0);
  }else{
    ajax_route_error(500, "Unhandled URL argument.");
  }
}

/*
** AJAX route /fileedit?ajax=commit
**
** Required query parameters:
**
** filename=FILENAME
** checkin=Parent check-in UUID
** content=text
** comment=non-empty text
**
** Optional query parameters:
**
** comment_mimetype=text (NOT currently honored)
**
** dry_run=int (1 or 0)
**
** include_manifest=int (1 or 0), whether to include
** the generated manifest in the response.
**
**
** User must have Write permissions to use this page.
**
** Responds with JSON (with some state repeated
** from the input in order to avoid certain race conditions
** client-side):
**
** {
**  checkin: newUUID,
**  filename: theFilename,
**  mimetype: string,
**  branch: name of the check-in's branch,
**  isExe: bool,
**  dryRun: bool,
**  manifest: text of manifest,
** }
**
** On error it produces a JSON response as documented for
** ajax_route_error().
*/
static void fileedit_ajax_commit(void){
  Blob err = empty_blob;      /* Error messages */
  Blob manifest = empty_blob; /* raw new manifest */
  CheckinMiniInfo cimi;       /* check-in state */
  int rc;                     /* generic result code */
  int newVid = 0;             /* new version's RID */
  char * zNewUuid = 0;        /* newVid's UUID */
  char const * zMimetype;
  char * zBranch = 0;

  if(!ajax_route_bootstrap(1,1)){
    return;
  }
  db_begin_transaction();
  CheckinMiniInfo_init(&cimi);
  rc = fileedit_setup_cimi_from_p(&cimi, &err, 0);
  if(0!=rc){
    ajax_route_error(rc,"%b",&err);
    goto end_cleanup;
  }
  if(blob_size(&cimi.comment)==0){
    ajax_route_error(400,"Empty check-in comment is not permitted.");
    goto end_cleanup;
  }
  if(0!=atoi(PD("include_manifest","0"))){
    cimi.pMfOut = &manifest;
  }
  checkin_mini(&cimi, &newVid, &err);
  if(blob_size(&err)){
    ajax_route_error(500,"%b",&err);
    goto end_cleanup;
  }
  assert(newVid>0);
  zNewUuid = rid_to_uuid(newVid);
  cgi_set_content_type("application/json");
  CX("{");
  CX("\"checkin\":%!j,", zNewUuid);
  CX("\"filename\":%!j,", cimi.zFilename);
  CX("\"isExe\": %s,", cimi.filePerm==PERM_EXE ? "true" : "false");
  zMimetype = mimetype_from_name(cimi.zFilename);
  if(zMimetype!=0){
    CX("\"mimetype\": %!j,", zMimetype);
  }
  zBranch = branch_of_rid(newVid);
  if(zBranch!=0){
    CX("\"branch\": %!j,", zBranch);
    fossil_free(zBranch);
  }
  CX("\"dryRun\": %s",
     (CIMINI_DRY_RUN & cimi.flags) ? "true" : "false");
  if(blob_size(&manifest)>0){
    CX(",\"manifest\": %!j", blob_str(&manifest));
  }
  CX("}");
end_cleanup:
  db_end_transaction(0/*noting that dry-run mode will have already
                      ** set this to rollback mode. */);
  fossil_free(zNewUuid);
  blob_reset(&err);
  blob_reset(&manifest);
  CheckinMiniInfo_cleanup(&cimi);
}

/*
** WEBPAGE: fileedit
**
** Enables the online editing and committing of text files. Requires
** that the user have Write permissions and that a user with setup
** permissions has set the fileedit-glob setting to a list of glob
** patterns matching files which may be edited (e.g. "*.wiki,*.md").
** Note that fileedit-glob, by design, is a local-only setting.
** It does not sync across repository clones, and must be explicitly
** set on any repositories where this page should be activated.
**
** Optional query parameters:
**
**    filename=FILENAME   Repo-relative path to the file.
**    checkin=VERSION     Check-in version, using any unambiguous
**                        symbolic version name.
**
** If passed a filename but no check-in then it will attempt to
** load that file from the most recent leaf check-in.
**
** Once the page is loaded, files may be selected from any open leaf
** version. The only way to edit files from non-leaf checkins is to
** pass both the filename and check-in as URL parameters to the page.
** Users with the proper permissions will be presented with "Edit"
** links in various file-specific contexts for files which match the
** fileedit-glob, regardless of whether they refer to leaf versions or
** not.
*/
void fileedit_page(void){
  const char * zFileMime = 0;           /* File mime type guess */
  CheckinMiniInfo cimi;                 /* Check-in state */
  int previewRenderMode = AJAX_RENDER_GUESS; /* preview mode */
  Blob err = empty_blob;                /* Error report */
  const char *zAjax = P("name");        /* Name of AJAX route for
                                           sub-dispatching. */

  /*
  ** Internal-use URL parameters:
  **
  **    name=string         The name of a page-specific AJAX operation.
  **
  ** Noting that fossil internally stores all URL path components
  ** after the first as the "name" value. Thus /fileedit?name=blah is
  ** equivalent to /fileedit/blah. The latter is the preferred
  ** form. This means, however, that no fileedit ajax routes may make
  ** use of the name parameter.
  **
  ** Which additional parameters are used by each distinct ajax route
  ** is an internal implementation detail and may change with any
  ** given build of this code. An unknown "name" value triggers an
  ** error, as documented for ajax_route_error().
  */

  /* Allow no access to this page without check-in privilege */
  login_check_credentials();
  if( !g.perm.Write ){
    if(zAjax!=0){
      ajax_route_error(403, "Write permissions required.");
    }else{
      login_needed(g.anon.Write);
    }
    return;
  }
  /* No access to anything on this page if the fileedit-glob is empty */
  if( fileedit_glob()==0 ){
    if(zAjax!=0){
      ajax_route_error(403, "Online editing is disabled for this "
                       "repository.");
      return;
    }
    style_header("File Editor (disabled)");
    CX("<h1>Online File Editing Is Disabled</h1>\n");
    if( g.perm.Admin ){
      CX("<p>To enable online editing, the "
         "<a href='%R/setup_settings'>"
         "<code>fileedit-glob</code> repository setting</a>\n"
         "must be set to a comma- and/or newine-delimited list of glob\n"
         "values matching files which may be edited online."
         "</p>\n");
    }else{
      CX("<p>Online editing is disabled for this repository.</p>\n");
    }
    style_finish_page();
    return;
  }

  /* Dispatch AJAX methods based tail of the request URI.
  ** The AJAX parts do their own permissions/CSRF check and
  ** fail with a JSON-format response if needed.
  */
  if( 0!=zAjax ){
    /* preview mode is handled via /ajax/preview-text */
    if(0==strcmp("content",zAjax)){
      fileedit_ajax_content();
    }else if(0==strcmp("filelist",zAjax)){
      fileedit_ajax_filelist();
    }else if(0==strcmp("diff",zAjax)){
      fileedit_ajax_diff();
    }else if(0==strcmp("commit",zAjax)){
      fileedit_ajax_commit();
    }else{
      ajax_route_error(500, "Unhandled ajax route name.");
    }
    return;
  }

  db_begin_transaction();
  CheckinMiniInfo_init(&cimi);
  style_header("File Editor");
  style_emit_noscript_for_js_page();
  /* As of this point, don't use return or fossil_fatal(). Write any
  ** error in (&err) and goto end_footer instead so that we can be
  ** sure to emit the error message, do any cleanup, and end the
  ** transaction cleanly.
  */
  {
    int isMissingArg = 0;
    if(fileedit_setup_cimi_from_p(&cimi, &err, &isMissingArg)==0){
      assert(cimi.zFilename);
      zFileMime = mimetype_from_name(cimi.zFilename);
    }else if(isMissingArg!=0){
      /* Squelch these startup warnings - they're non-fatal now but
      ** used to be fatal. */
      blob_reset(&err);
    }
  }

  /********************************************************************
  ** All errors which "could" have happened up to this point are of a
  ** degree which keep us from rendering the rest of the page, and
  ** thus have already caused us to skipped to the end of the page to
  ** render the errors. Any up-coming errors, barring malloc failure
  ** or similar, are not "that" fatal. We can/should continue
  ** rendering the page, then output the error message at the end.
  ********************************************************************/

  /* The CSS for this page lives in a common file but much of it we
  ** don't want inadvertently being used by other pages. We don't
  ** have a common, page-specific container we can filter our CSS
  ** selectors, but we do have the BODY, which we can decorate with
  ** whatever CSS we wish...
  */
  style_script_begin(__FILE__,__LINE__);
  CX("document.body.classList.add('fileedit');\n");
  style_script_end();

  /* Status bar */
  CX("<div id='fossil-status-bar' "
     "title='Status message area. Double-click to clear them.'>"
     "Status messages will go here.</div>\n"
     /* will be moved into the tab container via JS */);

  CX("<div id='fileedit-edit-status'>"
     "<span class='name'>(no file loaded)</span>"
     "<span class='links'></span>"
     "</div>");

  /* Main tab container... */
  CX("<div id='fileedit-tabs' class='tab-container'></div>");

  /* The .hidden class on the following tab elements is to help lessen
     the FOUC effect of the tabs before JS re-assembles them. */

  /***** File/version info tab *****/
  {
    CX("<div id='fileedit-tab-fileselect' "
       "data-tab-parent='fileedit-tabs' "
       "data-tab-label='File Selection' "
       "class='hidden'"
       ">");
    CX("<div id='fileedit-file-selector'></div>");
    CX("</div>"/*#fileedit-tab-fileselect*/);
  }

  /******* Content tab *******/
  {
    CX("<div id='fileedit-tab-content' "
       "data-tab-parent='fileedit-tabs' "
       "data-tab-label='File Content' "
       "class='hidden'"
       ">");
    CX("<div class='fileedit-options flex-container "
       "flex-row child-gap-small'>");
    CX("<div class='input-with-label'>"
       "<button class='fileedit-content-reload confirmer' "
       ">Discard &amp; Reload</button>"
       "<div class='help-buttonlet'>"
       "Reload the file from the server, discarding "
       "any local edits. To help avoid accidental loss of "
       "edits, it requires confirmation (a second click) within "
       "a few seconds or it will not reload."
       "</div>"
       "</div>");
    style_select_list_int("select-font-size",
                          "editor_font_size", "Editor font size",
                          NULL/*tooltip*/,
                          100,
                          "100%", 100, "125%", 125,
                          "150%", 150, "175%", 175,
                          "200%", 200, NULL);
    wikiedit_emit_toggle_preview();
    CX("</div>");
    CX("<div class='flex-container flex-column stretch'>");
    CX("<textarea name='content' id='fileedit-content-editor' "
       "class='fileedit' rows='25'>");
    CX("</textarea>");
    CX("</div>"/*textarea wrapper*/);
    CX("</div>"/*#tab-file-content*/);
  }

  /****** Preview tab ******/
  {
    CX("<div id='fileedit-tab-preview' "
       "data-tab-parent='fileedit-tabs' "
       "data-tab-label='Preview' "
       "class='hidden'"
       ">");
    CX("<div class='fileedit-options flex-container flex-row'>");
    CX("<button id='btn-preview-refresh' "
       "data-f-preview-from='fileContent' "
       /* ^^^ fossil.page[methodName]() OR text source elem ID,
      ** but we need a method in order to support clients swapping out
      ** the text editor with their own. */
       "data-f-preview-via='_postPreview' "
       /* ^^^ fossil.page[methodName](content, callback) */
       "data-f-preview-to='_previewTo' "
       /* ^^^ dest elem ID */
       ">Refresh</button>");
    /* Toggle auto-update of preview when the Preview tab is selected. */
    CX("<div class='input-with-label'>"
       "<input type='checkbox' value='1' "
       "id='cb-preview-autorefresh' checked>"
       "<label for='cb-preview-autorefresh'>Auto-refresh?</label>"
       "<div class='help-buttonlet'>"
       "If on, the preview will automatically "
       "refresh (if needed) when this tab is selected."
       "</div>"
       "</div>");

    /* Default preview rendering mode selection... */
    previewRenderMode = zFileMime
      ? ajax_render_mode_for_mimetype(zFileMime)
      : AJAX_RENDER_GUESS;
    style_select_list_int("select-preview-mode",
                          "preview_render_mode",
                          "Preview Mode",
                          "Preview mode format.",
                          previewRenderMode,
                          "Guess", AJAX_RENDER_GUESS,
                          "Wiki/Markdown", AJAX_RENDER_WIKI,
                          "HTML (iframe)", AJAX_RENDER_HTML_IFRAME,
                          "HTML (inline)", AJAX_RENDER_HTML_INLINE,
                          "Plain Text", AJAX_RENDER_PLAIN_TEXT,
                          NULL);
    /* Allow selection of HTML preview iframe height */
    style_select_list_int("select-preview-html-ems",
                          "preview_html_ems",
                          "HTML Preview IFrame Height (EMs)",
                          "Height (in EMs) of the iframe used for "
                          "HTML preview",
                          40 /*default*/,
                          "", 20, "", 40,
                          "", 60, "", 80,
                          "", 100, NULL);
    /* Selection of line numbers for text preview */
    style_labeled_checkbox("cb-line-numbers",
                           "preview_ln",
                           "Add line numbers to plain-text previews?",
                           "1", P("preview_ln")!=0,
                           "If on, plain-text files (only) will get "
                           "line numbers added to the preview.");
    CX("</div>"/*.fileedit-options*/);
    CX("<div id='fileedit-tab-preview-wrapper'></div>");
    CX("</div>"/*#fileedit-tab-preview*/);
  }

  /****** Diff tab ******/
  {
    CX("<div id='fileedit-tab-diff' "
       "data-tab-parent='fileedit-tabs' "
       "data-tab-label='Diff' "
       "class='hidden'"
       ">");

    CX("<div class='fileedit-options flex-container "
       "flex-row child-gap-small' "
       "id='fileedit-tab-diff-buttons'>");
    CX("<button class='sbs'>Side-by-side</button>"
       "<button class='unified'>Unified</button>");
    if(0){
      /* For the time being let's just ignore all whitespace
      ** changes, as files with Windows-style EOLs always show
      ** more diffs than we want then they're submitted to
      ** ?ajax=diff because JS normalizes them to Unix EOLs.
      ** We can revisit this decision later. */
      style_select_list_int("diff-ws-policy",
                            "diff_ws", "Whitespace",
                            "Whitespace handling policy.",
                            2,
                            "Diff all whitespace", 0,
                            "Ignore EOL whitespace", 1,
                            "Ignore all whitespace", 2,
                            NULL);
    }
    CX("</div>");
    CX("<div id='fileedit-tab-diff-wrapper'>"
       "Diffs will be shown here."
       "</div>");
    CX("</div>"/*#fileedit-tab-diff*/);
  }

  /****** Commit ******/
  CX("<div id='fileedit-tab-commit' "
     "data-tab-parent='fileedit-tabs' "
     "data-tab-label='Commit' "
     "class='hidden'"
     ">");
  {
    /******* Commit flags/options *******/
    CX("<div class='fileedit-options flex-container flex-row'>");
    style_labeled_checkbox("cb-dry-run",
                           "dry_run", "Dry-run?", "1",
                           0,
                           "In dry-run mode, the Commit button performs "
                           "all work needed for committing changes but "
                           "then rolls back the transaction, and thus "
                           "does not really commit.");
    style_labeled_checkbox("cb-allow-fork",
                           "allow_fork", "Allow fork?", "1",
                           cimi.flags & CIMINI_ALLOW_FORK,
                           "Allow committing to create a fork?");
    style_labeled_checkbox("cb-allow-older",
                           "allow_older", "Allow older?", "1",
                           cimi.flags & CIMINI_ALLOW_OLDER,
                           "Allow saving against a parent version "
                           "which has a newer timestamp?");
    style_labeled_checkbox("cb-exec-bit",
                           "exec_bit", "Executable?", "1",
                           PERM_EXE==cimi.filePerm,
                           "Set the executable bit?");
    style_labeled_checkbox("cb-allow-merge-conflict",
                           "allow_merge_conflict",
                           "Allow merge conflict markers?", "1",
                           cimi.flags & CIMINI_ALLOW_MERGE_MARKER,
                           "Allow saving even if the content contains "
                           "what appear to be fossil merge conflict "
                           "markers?");
    style_labeled_checkbox("cb-prefer-delta",
                           "prefer_delta",
                           "Prefer delta manifest?", "1",
                           db_get_boolean("forbid-delta-manifests",0)
                           ? 0
                           : (db_get_boolean("seen-delta-manifest",0)
                              || cimi.flags & CIMINI_PREFER_DELTA),
                           "Will create a delta manifest, instead of "
                           "baseline, if conditions are favorable to "
                           "do so. This option is only a suggestion.");
    style_labeled_checkbox("cb-include-manifest",
                           "include_manifest",
                           "Response manifest?", "1",
                           0,
                           "Include the manifest in the response? "
                           "It's generally only useful for debug "
                           "purposes.");
    style_select_list_int("select-eol-style",
                          "eol", "EOL Style",
                          "EOL conversion policy, noting that "
                          "webpage-side processing may implicitly change "
                          "the line endings of the input.",
                          (cimi.flags & CIMINI_CONVERT_EOL_UNIX)
                          ? 1 : (cimi.flags & CIMINI_CONVERT_EOL_WINDOWS
                                 ? 2 : 0),
                          "Inherit", 0,
                          "Unix", 1,
                          "Windows", 2,
                          NULL);

    CX("</div>"/*checkboxes*/);
  }

  { /******* Commit comment, button, and result manifest *******/
    CX("<fieldset class='fileedit-options commit-message'>"
       "<legend>Message (required)</legend><div>\n");
    /* We have two comment input fields, defaulting to single-line
    ** mode. JS code sets up the ability to toggle between single-
    ** and multi-line modes. */
    CX("<input type='text' name='comment' "
       "id='fileedit-comment'></input>");
    CX("<textarea name='commentBig' class='hidden' "
       "rows='5' id='fileedit-comment-big'></textarea>\n");
    { /* comment options... */
      CX("<div class='flex-container flex-column child-gap-small'>");
      CX("<button id='comment-toggle' "
         "title='Toggle between single- and multi-line comment mode, "
         "noting that switching from multi- to single-line will cause "
         "newlines to get stripped.'"
         ">Toggle single-/multi-line</button> ");
      if(0){
        /* Manifests support an N-card (comment mime type) but it has
        ** yet to be honored where comments are rendered, so we don't
        ** currently offer it as an option here:
        ** https://fossil-scm.org/forum/forumpost/662da045a1
        **
        ** If/when it's ever implemented, simply enable this block and
        ** adjust the container's layout accordingly (as of this
        ** writing, that means changing the CSS class from
        ** 'flex-container flex-column' to 'flex-container flex-row').
        */
        style_select_list_str("comment-mimetype", "comment_mimetype",
                              "Comment style:",
                              "Specify how fossil will interpret the "
                              "comment string.",
                              NULL,
                              "Fossil", "text/x-fossil-wiki",
                              "Markdown", "text/x-markdown",
                              "Plain text", "text/plain",
                              NULL);
        CX("</div>\n");
      }
      CX("<div class='fileedit-hint flex-container flex-row'>"
         "(Warning: switching from multi- to single-line mode will "
         "strip out all newlines!)</div>");
    }
    CX("</div></fieldset>\n"/*commit comment options*/);
    CX("<div class='flex-container flex-column' "
       "id='fileedit-commit-button-wrapper'>"
       "<button id='fileedit-btn-commit'>Commit</button>"
       "</div>\n");
    CX("<div id='fileedit-manifest'></div>\n"
       /* Manifest gets rendered here after a commit. */);
  }
  CX("</div>"/*#fileedit-tab-commit*/);

  /****** Help/Tips ******/
  CX("<div id='fileedit-tab-help' "
     "data-tab-parent='fileedit-tabs' "
     "data-tab-label='Help' "
     "class='hidden'"
     ">");
  {
    CX("<h1>Help &amp; Tips</h1>");
    CX("<ul>");
    CX("<li><strong>Only files matching the <code>fileedit-glob</code> "
       "repository setting</strong> can be edited online. That setting "
       "must be a comma- or newline-delimited list of glob patterns "
       "for files which may be edited online.</li>");
    CX("<li>Committing edits creates a new commit record with a single "
       "modified file.</li>");
    CX("<li>\"Delta manifests\" (see the checkbox on the Commit tab) "
       "make for smaller commit records, especially in repositories "
       "with many files.</li>");
    CX("<li>The file selector allows, for usability's sake, only files "
       "in leaf check-ins to be selected, but files may be edited via "
       "non-leaf check-ins by passing them as the <code>filename</code> "
       "and <code>checkin</code> URL arguments to this page.</li>");
    CX("<li>The editor stores some number of local edits in one of "
       "<code>window.fileStorage</code> or "
       "<code>window.sessionStorage</code>, if able, but which storage "
       "is unspecified and may differ across environments. When "
       "committing or force-reloading a file, local edits to that "
       "file/check-in combination are discarded.</li>");
    CX("</ul>");
  }
  CX("</div>"/*#fileedit-tab-help*/);

  builtin_fossil_js_bundle_or("fetch", "dom", "tabs", "confirmer",
                              "storage", "popupwidget", "copybutton",
                              "pikchr", NULL);
  /*
  ** Set up a JS-side mapping of the AJAX_RENDER_xyz values. This is
  ** used for dynamically toggling certain UI components on and off.
  ** Must come after window.fossil has been initialized and before
  ** fossil.page.fileedit.js. Potential TODO: move this into the
  ** window.fossil bootstrapping so that we don't have to "fulfill"
  ** the JS multiple times.
  */
  ajax_emit_js_preview_modes(1);
  builtin_fossil_js_bundle_or("diff", NULL);
  builtin_request_js("fossil.page.fileedit.js");
  builtin_fulfill_js_requests();
  {
    /* Dynamically populate the editor, display any error in the err
    ** blob, and/or switch to tab #0, where the file selector
    ** lives. The extra C scopes here correspond to JS-level scopes,
    ** to improve grokability. */
    style_script_begin(__FILE__,__LINE__);
    CX("\n(function(){\n");
    CX("try{\n");
    {
      char * zFirstLeafUuid = 0;
      CX("fossil.config['fileedit-glob'] = ");
      glob_render_json_to_cgi(fileedit_glob());
      CX(";\n");
      if(blob_size(&err)>0){
        CX("fossil.error(%!j);\n", blob_str(&err));
      }
      /* Populate the page with the current leaves and, if available,
         the selected check-in's file list, to save 1 or 2 XHR requests
         at startup. That makes this page uncacheable, but compressed
         delivery of this page is currently less than 6k. */
      CX("fossil.page.initialLeaves = ");
      fileedit_render_leaves_list(cimi.zParentUuid ? 0 : &zFirstLeafUuid);
      CX(";\n");
      if(zFirstLeafUuid){
        assert(!cimi.zParentUuid);
        cimi.zParentUuid = zFirstLeafUuid;
        zFirstLeafUuid = 0;
      }
      if(cimi.zParentUuid){
        CX("fossil.page.initialFiles = ");
        fileedit_render_checkin_files(cimi.zParentUuid);
        CX(";\n");
      }
      CX("fossil.onPageLoad(function(){\n");
      {
        if(blob_size(&err)>0){
          CX("fossil.error(%!j);\n",
             blob_str(&err));
          CX("fossil.page.tabs.switchToTab(0);\n");
        }
        if(cimi.zParentUuid && cimi.zFilename){
          CX("fossil.page.loadFile(%!j,%!j);\n",
             cimi.zFilename, cimi.zParentUuid)
            /* Reminder we cannot embed the JSON-format
               content of the file here because if it contains
               a SCRIPT tag then it will break the whole page. */;
        }
      }
      CX("});\n")/*fossil.onPageLoad()*/;
    }
    CX("}catch(e){"
       "fossil.error(e); console.error('Exception:',e);"
       "}\n");
    CX("})();")/*anonymous function*/;
    style_script_end();
  }
  blob_reset(&err);
  CheckinMiniInfo_cleanup(&cimi);
  db_end_transaction(0);
  style_finish_page();
}
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** This file contains code to implement the "finfo" command.
*/
#include "config.h"
#include "finfo.h"

/*
** COMMAND: finfo
** 
** Usage: %fossil finfo FILENAME
**
** Usage: %fossil finfo ?OPTIONS? FILENAME
**
** Print the change history for a single file.
** Print the complete change history for a single file going backwards
** in time.  The default mode is -l.
**
** For the -l|--log mode: If "-b|--brief" is specified one line per revision
** is printed, otherwise the full comment is printed.  The "-n|--limit N"
** The "--limit N" and "--offset P" options limits the output to the first
** N changes after skipping P changes.
** and "--offset P" options limits the output to the first N changes
** after skipping P changes.
**
** The -i mode will print various facts about FILENAME, including its
** hash and the check-in and time when the current version of the file
** was created.  Use -v for additional information.  Add the -r VERSION
** option to see similar information about the same file for the check-in
** specified by VERSION.
**
** In the -s mode prints the status as <status> <revision>.  This is
** a quick status and does not check for up-to-date-ness of the file.
**
** In the -p mode, there's an optional flag "-r|--revision REVISION".
** The specified version (or the latest checked-out version) is printed
** to stdout.  The -p mode is another form of the "cat" command.
**
** Options:
**   -b|--brief           Display a brief (one line / revision) summary
**   --case-sensitive B   Enable or disable case-sensitive filenames.  B is a
**                          boolean: "yes", "no", "true", "false", etc.
**   -i|--id              Print the artifact ID
**   -l|--log             Select log mode (the default)
**   -n|--limit N         Display the first N changes (default unlimited).
**                          N less than 0 means no limit.
**   --offset P           Skip P changes
**   -p|--print           Select print mode
**   -r|--revision R      Print the given revision (or ckout, if none is given)
**                          to stdout (only in print mode)
**   -s|--status          Select status mode (print a status indicator for FILE)
**   -v|--verbose         On the -i option, show all check-ins that use the
**                          file, not just the earliest check-in
**   -W|--width N         Width of lines (default is to auto-detect). Must be
**                          more than 22 or else 0 to indicate no limit.
**
** See also: [[artifact]], [[cat]], [[descendants]], [[info]], [[leaves]]
*/
void finfo_cmd(void){
  db_must_be_within_tree();
  if( find_option("status","s",0) ){
  Stmt q;
  int vid;
  Blob dest;
  const char *zFilename;
  const char *zLimit;
  const char *zOffset;
    Stmt q;
    Blob line;
    Blob fname;
    int vid;

    /* We should be done with options.. */
    verify_all_options();

    if( g.argc!=3 ) usage("-s|--status FILENAME");
    vid = db_lget_int("checkout", 0);
    if( vid==0 ){
      fossil_fatal("no check-out to finfo files in");
    }
    vfile_check_signature(vid, CKSIG_ENOTFILE);
    file_tree_name(g.argv[2], &fname, 0, 1);
    db_prepare(&q,
        "SELECT pathname, deleted, rid, chnged, coalesce(origname!=pathname,0)"
        "  FROM vfile WHERE vfile.pathname=%B %s",
        &fname, filename_collation());
    blob_zero(&line);
    if( db_step(&q)==SQLITE_ROW ) {
      Blob uuid;
      int isDeleted = db_column_int(&q, 1);
      int isNew = db_column_int(&q,2) == 0;
      int chnged = db_column_int(&q,3);
      int renamed = db_column_int(&q,4);

      blob_zero(&uuid);
      db_blob(&uuid,
           "SELECT uuid FROM blob, mlink, vfile WHERE "
           "blob.rid = mlink.mid AND mlink.fid = vfile.rid AND "
           "vfile.pathname=%B %s",
           &fname, filename_collation()
      );
      if( isNew ){
        blob_appendf(&line, "new");
      }else if( isDeleted ){
        blob_appendf(&line, "deleted");
      }else if( renamed ){
        blob_appendf(&line, "renamed");
      }else if( chnged ){
        blob_appendf(&line, "edited");
      }else{
        blob_appendf(&line, "unchanged");
      }
      blob_appendf(&line, " ");
      blob_appendf(&line, " %10.10s", blob_str(&uuid));
      blob_reset(&uuid);
    }else{
      blob_appendf(&line, "unknown 0000000000");
    }
    db_finalize(&q);
    fossil_print("%s\n", blob_str(&line));
    blob_reset(&fname);
    blob_reset(&line);
  }else if( find_option("print","p",0) ){
    Blob record;
    Blob fname;
    const char *zRevision = find_option("revision", "r", 1);
  int iLimit, iOffset;

    /* We should be done with options.. */
    verify_all_options();
  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_panic("no checkout to finfo files in");
  }
  zLimit = find_option("limit",0,1);
  iLimit = zLimit ? atoi(zLimit) : -1;
  zOffset = find_option("offset",0,1);
  iOffset = zOffset ? atoi(zOffset) : 0;
  if (g.argc<3) {
    usage("FILENAME");
  }
  file_tree_name(g.argv[2], &dest, 1);
  zFilename = blob_str(&dest);
  db_prepare(&q,

    file_tree_name(g.argv[2], &fname, 0, 1);
    if( zRevision ){
      historical_blob(zRevision, blob_str(&fname), &record, 1);
    }else{
      int rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B %s",
                       &fname, filename_collation());
      if( rid==0 ){
        fossil_fatal("no history for file: %b", &fname);
      }
      content_get(rid, &record);
    }
    blob_write_to_file(&record, "-");
    blob_reset(&record);
    blob_reset(&fname);
  }else if( find_option("id","i",0) ){
    Blob fname;
    int rid;
    int whatisFlags = WHATIS_BRIEF;
    const char *zRevision = find_option("revision", "r", 1);
    if( find_option("verbose","v",0)!=0 ) whatisFlags = 0;

    verify_all_options();

    if( zRevision==0 ) zRevision = "current";
    if( g.argc!=3 ) usage("FILENAME");
    file_tree_name(g.argv[2], &fname, 0, 1);
    rid = db_int(0, "SELECT rid FROM blob WHERE uuid ="
                    "  (SELECT uuid FROM files_of_checkin(%Q)"
                    "   WHERE filename=%B %s)",
                 zRevision, &fname, filename_collation());
    if( rid==0 ) {
      fossil_fatal("file not found for revision %s: %s",
                   zRevision, blob_str(&fname));
    }
    whatis_rid(rid,whatisFlags);
    blob_reset(&fname);
  }else{
    Blob line;
    Stmt q;
    Blob fname;
    int rid;
    const char *zFilename;
    const char *zLimit;
    const char *zWidth;
    const char *zOffset;
    int iLimit, iOffset, iBrief, iWidth;

    if( find_option("log","l",0) ){
      /* this is the default, no-op */
    }
    zLimit = find_option("limit","n",1);
    zWidth = find_option("width","W",1);
    iLimit = zLimit ? atoi(zLimit) : -1;
    zOffset = find_option("offset",0,1);
    iOffset = zOffset ? atoi(zOffset) : 0;
    iBrief = find_option("brief","b",0) != 0;
    if( iLimit==0 ){
      iLimit = -1;
    }
    if( zWidth ){
      iWidth = atoi(zWidth);
      if( (iWidth!=0) && (iWidth<=22) ){
        fossil_fatal("-W|--width value must be >22 or 0");
      }
    }else{
      iWidth = -1;
    }

    /* We should be done with options.. */
    verify_all_options();

    if( g.argc!=3 ){
      usage("?-l|--log? ?-b|--brief? FILENAME");
    }
    file_tree_name(g.argv[2], &fname, 0, 1);
    rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B %s",
                 &fname, filename_collation());
    if( rid==0 ){
      fossil_fatal("no history for file: %b", &fname);
    }
    zFilename = blob_str(&fname);
    db_prepare(&q,
    "SELECT "
    "       (SELECT uuid FROM blob WHERE rid=mlink.fid),"  /* New file */
    "       (SELECT uuid FROM blob WHERE rid=mlink.mid),"  /* The check-in */
    "       date(event.mtime,'localtime'),"
    "       coalesce(event.ecomment, event.comment),"
    "       coalesce(event.euser, event.user)"
    "  FROM mlink, event"
    " WHERE mlink.fnid=(SELECT fnid FROM filename WHERE name=%Q)"
    "   AND event.objid=mlink.mid"
    " ORDER BY event.mtime DESC LIMIT %d OFFSET %d /*sort*/",
    zFilename, iLimit, iOffset
  );
 
        "SELECT DISTINCT b.uuid, ci.uuid, date(event.mtime,toLocal()),"
        "       coalesce(event.ecomment, event.comment),"
        "       coalesce(event.euser, event.user),"
        "       (SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0"
                                " AND tagxref.rid=mlink.mid)" /* Tags */
        "  FROM mlink, blob b, event, blob ci, filename"
        " WHERE filename.name=%Q %s"
        "   AND mlink.fnid=filename.fnid"
        "   AND b.rid=mlink.fid"
        "   AND event.objid=mlink.mid"
        "   AND event.objid=ci.rid"
        " ORDER BY event.mtime DESC LIMIT %d OFFSET %d",
        TAG_BRANCH, zFilename, filename_collation(),
        iLimit, iOffset
    );
    blob_zero(&line);
    if( iBrief == 0 ){
      fossil_print("History for %s\n", blob_str(&fname));
    }
  printf("History of %s\n", zFilename);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFileUuid = db_column_text(&q, 0);
    const char *zCiUuid = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zCom = db_column_text(&q, 3);
    const char *zUser = db_column_text(&q, 4);
    char *zOut;
    printf("%s ", zDate);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zFileUuid = db_column_text(&q, 0);
      const char *zCiUuid = db_column_text(&q,1);
      const char *zDate = db_column_text(&q, 2);
      const char *zCom = db_column_text(&q, 3);
      const char *zUser = db_column_text(&q, 4);
      const char *zBr = db_column_text(&q, 5);
      char *zOut;
      if( zBr==0 ) zBr = "trunk";
      if( iBrief == 0 ){
        fossil_print("%s ", zDate);
    if( zFileUuid==0 ){
      zOut = sqlite3_mprintf("[%.10s] DELETED %s (user: %s)",
        zOut = mprintf(
                              zCiUuid, zCom, zUser);
    }else{
      zOut = sqlite3_mprintf("[%.10s] %s (user: %s, artifact: [%.10s])",
                              zCiUuid, zCom, zUser, zFileUuid);
           "[%S] %s (user: %s, artifact: [%S], branch: %s)",
           zCiUuid, zCom, zUser, zFileUuid, zBr);
    }
    comment_print(zOut, 11, 79);
    sqlite3_free(zOut);
  }
        comment_print(zOut, zCom, 11, iWidth, get_comment_format());
        fossil_free(zOut);
      }else{
  db_finalize(&q);
  blob_reset(&dest);
}

        blob_reset(&line);
        blob_appendf(&line, "%S ", zCiUuid);
        blob_appendf(&line, "%.10s ", zDate);
        blob_appendf(&line, "%8.8s ", zUser);
        blob_appendf(&line, "%8.8s ", zBr);
        blob_appendf(&line,"%-39.39s", zCom );
        comment_print(blob_str(&line), zCom, 0, iWidth, get_comment_format());
      }
    }
    db_finalize(&q);
    blob_reset(&fname);
  }
}

/*
** COMMAND: cat
**
** Usage: %fossil cat FILENAME ... ?OPTIONS?
**
** Print on standard output the content of one or more files as they exist
** in the repository.  The version currently checked out is shown by default.
** Other versions may be specified using the -r option.
**
** Options:
**    -o|--out OUTFILE         For exactly one given FILENAME, write to OUTFILE
**    -R|--repository REPO     Extract artifacts from repository REPO
**    -r VERSION               The specific check-in containing the file
**
** See also: [[finfo]]
*/
void cat_cmd(void){
  int i;
  Blob content, fname;
  const char *zRev;
  const char *zFileName;
  db_find_and_open_repository(0, 0);
  zRev = find_option("r","r",1);
  zFileName = find_option("out","o",1);

  /* We should be done with options.. */
  verify_all_options();

  if ( zFileName && g.argc>3 ){
    fossil_fatal("output file can only be given when retrieving a single file");
  }

  for(i=2; i<g.argc; i++){
    file_tree_name(g.argv[i], &fname, 0, 1);
    blob_zero(&content);
    historical_blob(zRev, blob_str(&fname), &content, 1);
    if ( g.argc==3 && zFileName ){
      blob_write_to_file(&content, zFileName);
    }else{
      blob_write_to_file(&content, "-");
    }
    blob_reset(&fname);
    blob_reset(&content);
  }
}

/* Values for the debug= query parameter to finfo */
#define FINFO_DEBUG_MLINK  0x01

/*
** WEBPAGE: finfo
** Usage:
** URL: /finfo?name=FILENAME
**   *  /finfo?name=FILENAME
**   *  /finfo?name=FILENAME&ci=HASH
**
** Show the complete change history for a single file. 
** Show the change history for a single file.  The name=FILENAME query
** parameter gives the filename and is a required parameter.  If the
** ci=HASH parameter is also supplied, then the FILENAME,HASH combination
** identifies a particular version of a file, and in that case all changes
** to that one file version are tracked across both edits and renames.
** If only the name=FILENAME parameter is supplied (if ci=HASH is omitted)
** then the graph shows all changes to any file while it happened
** to be called FILENAME and changes are not tracked across renames.
**
** Additional query parameters:
**
**    a=DATETIME      Only show changes after DATETIME
**    b=DATETIME      Only show changes before DATETIME
**    ci=HASH         identify a particular version of a file and then
**                    track changes to that file across renames
**    m=HASH          Mark this particular file version.
**    n=NUM           Show the first NUM changes only
**    name=FILENAME   (Required) name of file whose history to show
**    brbg            Background color by branch name
**    ubg             Background color by user name
**    from=HASH       Ancestors only (not descendants) of the version of
**                    the file in this particular check-in.
**    to=HASH         If both from= and to= are supplied, only show those
**                    changes on the direct path between the two given
**                    checkins.
**    showid          Show RID values for debugging
**    showsql         Show the SQL query used to gather the data for
**                    the graph
**
** DATETIME may be in any of usual formats, including "now",
** "YYYY-MM-DDTHH:MM:SS.SSS", "YYYYMMDDHHMM", and others.
*/
void finfo_page(void){
  Stmt q;
  const char *zFilename;
  const char *zFilename = PD("name","");
  char zPrevDate[20];
  const char *zA;
  const char *zB;
  int n;
  int ridFrom;
  int ridTo = 0;
  int ridCi = 0;
  const char *zCI = P("ci");
  int fnid;
  Blob title;
  Blob sql;
  HQuery url;
  GraphContext *pGraph;
  int brBg = P("brbg")!=0;
  int uBg = P("ubg")!=0;
  int fDebug = atoi(PD("debug","0"));
  int fShowId = P("showid")!=0;
  Stmt qparent;
  int iTableId = timeline_tableid();
  int tmFlags = 0;            /* Viewing mode */
  const char *zStyle;         /* Viewing mode name */
  const char *zMark;          /* Mark this version of the file */
  int selRid = 0;             /* RID of the marked file version */
  int mxfnid;                 /* Maximum filename.fnid value */

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  style_header("File History");
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q", zFilename);
  ridCi = zCI ? name_to_rid_www("ci") : 0;
  if( fnid==0 ){
    style_header("No such file");
  }else if( ridCi==0 ){
    style_header("All files named \"%s\"", zFilename);
  }else{
    style_header("History of %s of %s",zFilename, zCI);
  }
  login_anonymous_available();
  tmFlags = timeline_ss_submenu();
  if( tmFlags & TIMELINE_COLUMNAR ){
    zStyle = "Columnar";
  }else if( tmFlags & TIMELINE_COMPACT ){
    zStyle = "Compact";
  }else if( tmFlags & TIMELINE_VERBOSE ){
    zStyle = "Verbose";
  }else if( tmFlags & TIMELINE_CLASSIC ){
    zStyle = "Classic";
  }else{
    zStyle = "Modern";

  }
  url_initialize(&url, "finfo");
  if( brBg ) url_add_parameter(&url, "brbg", 0);
  if( uBg ) url_add_parameter(&url, "ubg", 0);
  ridFrom = name_to_rid_www("from");
  zPrevDate[0] = 0;
  if( fnid==0 ){
  zFilename = PD("name","");
  db_prepare(&q,
    "SELECT"
    " datetime(event.mtime,'localtime'),"            /* Date of change */
    " coalesce(event.ecomment, event.comment),"      /* Check-in comment */
    " coalesce(event.euser, event.user),"            /* User who made chng */
    " mlink.pid,"                                    /* File rid */
    " mlink.fid,"                                    /* Parent file rid */
    " (SELECT uuid FROM blob WHERE rid=mlink.pid),"  /* Parent file uuid */
    " (SELECT uuid FROM blob WHERE rid=mlink.fid),"  /* Current file uuid */
    " (SELECT uuid FROM blob WHERE rid=mlink.mid),"  /* Check-in uuid */
    " event.bgcolor,"                                /* Background color */
    " (SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0"
                                " AND tagxref.rid=mlink.mid)" /* Tags */
    "  FROM mlink, event"
    " WHERE mlink.fnid=(SELECT fnid FROM filename WHERE name=%Q)"
    "   AND event.objid=mlink.mid"
    @ No such file: %h(zFilename)
    style_finish_page();
    return;
  }
  if( g.perm.Admin ){
    style_submenu_element("MLink Table", "%R/mlink?name=%t", zFilename);
  }
  if( ridFrom ){
    if( P("to")!=0 ){
      ridTo = name_to_typed_rid(P("to"),"ci");
      path_shortest_stored_in_ancestor_table(ridFrom,ridTo);
    }else{
      compute_direct_ancestors(ridFrom);
    }
  }
  url_add_parameter(&url, "name", zFilename);
  cgi_check_for_malice();
  blob_zero(&sql);
  if( ridCi ){
    /* If we will be tracking changes across renames, some extra temp
    ** tables (implemented as CTEs) are required */
    blob_append_sql(&sql,
      /* The clade(fid,fnid) table is the set of all (fid,fnid) pairs
      ** that should participate in the output.  Clade is computed by
      ** walking the graph of mlink edges.
      */
      "WITH RECURSIVE clade(fid,fnid) AS (\n"
      "  SELECT blob.rid, %d FROM blob\n"         /* %d is fnid */
      "   WHERE blob.uuid=(SELECT uuid FROM files_of_checkin(%Q)"
                         " WHERE filename=%Q)\n"  /* %Q is the filename */
      "   UNION\n"
      "  SELECT mlink.fid, mlink.fnid\n"
      "    FROM clade, mlink\n"
      "   WHERE clade.fid=mlink.pid\n"
      "     AND ((mlink.pfnid=0 AND mlink.fnid=clade.fnid)\n"
      "          OR mlink.pfnid=clade.fnid)\n"
      "     AND (mlink.fid>0 OR NOT EXISTS(SELECT 1 FROM mlink AS mx"
                 " WHERE mx.mid=mlink.mid AND mx.pid=mlink.pid"
                 "   AND mx.fid>0 AND mx.pfnid=mlink.fnid))\n"
      "   UNION\n"
      "  SELECT mlink.pid,"
              " CASE WHEN mlink.pfnid>0 THEN mlink.pfnid ELSE mlink.fnid END\n"
      "    FROM clade, mlink\n"
      "   WHERE mlink.pid>0\n"
      "     AND mlink.fid=clade.fid\n"
      "     AND mlink.fnid=clade.fnid\n"
      ")\n",
      fnid, zCI, zFilename
    );
  }else{
    /* This is the case for all files with a given name.  We will still
    ** create a "clade(fid,fnid)" table that identifies all participates
    ** in the output graph, so that subsequent queries can all be the same,
    ** but in the case the clade table is much simplier, being just a
    ** single direct query against the mlink table.
    */
    blob_append_sql(&sql,
      "WITH clade(fid,fnid) AS (\n"
      "  SELECT DISTINCT fid, %d\n"
      "    FROM mlink\n"
      "   WHERE fnid=%d)",
      fnid, fnid
    );
  }
  blob_append_sql(&sql,
    "SELECT\n"
    "  datetime(min(event.mtime),toLocal()),\n"         /* Date of change */
    "  coalesce(event.ecomment, event.comment),\n"      /* Check-in comment */
    "  coalesce(event.euser, event.user),\n"            /* User who made chng */
    "  mlink.pid,\n"                                    /* Parent file rid */
    "  mlink.fid,\n"                                    /* File rid */
    "  (SELECT uuid FROM blob WHERE rid=mlink.pid),\n"  /* Parent file hash */
    "  blob.uuid,\n"                                    /* Current file hash */
    "  (SELECT uuid FROM blob WHERE rid=mlink.mid),\n"  /* Check-in hash */
    "  event.bgcolor,\n"                                /* Background color */
    "  (SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0"
                             " AND tagxref.rid=mlink.mid),\n" /* Branchname */
    "  mlink.mid,\n"                                    /* check-in ID */
    "  mlink.pfnid,\n"                                  /* Previous filename */
    "  blob.size,\n"                                    /* File size */
    "  mlink.fnid,\n"                                   /* Current filename */
    "  filename.name\n"                                 /* Current filename */
    "FROM clade CROSS JOIN mlink, event"
    " LEFT JOIN blob ON blob.rid=clade.fid"
    " LEFT JOIN filename ON filename.fnid=clade.fnid\n"
    "WHERE mlink.fnid=clade.fnid AND mlink.fid=clade.fid\n"
    "  AND event.objid=mlink.mid\n",
    " ORDER BY event.mtime DESC /*sort*/",
    TAG_BRANCH,
    TAG_BRANCH
    zFilename
  );
  if( (zA = P("a"))!=0 ){
    blob_append_sql(&sql, "  AND event.mtime>=%.16g\n",
         symbolic_name_to_mtime(zA,0));
    url_add_parameter(&url, "a", zA);
  }
  if( (zB = P("b"))!=0 ){
    blob_append_sql(&sql, "  AND event.mtime<=%.16g\n",
         symbolic_name_to_mtime(zB,0));
    url_add_parameter(&url, "b", zB);
  }
  if( ridFrom ){
    blob_append_sql(&sql,
      "  AND mlink.mid IN (SELECT rid FROM ancestor)\n"
      "GROUP BY mlink.fid\n"
    );
  }else{
    /* We only want each version of a file to appear on the graph once,
    ** at its earliest appearance.  All the other times that it gets merged
    ** into this or that branch can be ignored.  An exception is for when
    ** files are deleted (when they have mlink.fid==0).  If the same file
    ** is deleted in multiple places, we want to show each deletion, so
    ** use a "fake fid" which is derived from the parent-fid for grouping.
    ** The same fake-fid must be used on the graph.
    */
    blob_append_sql(&sql,
      "GROUP BY"
      " CASE WHEN mlink.fid>0 THEN mlink.fid ELSE mlink.pid+1000000000 END,"
      " mlink.fnid\n"
    );
  }
  blob_append_sql(&sql, "ORDER BY event.mtime DESC");
  if( (n = atoi(PD("n","0")))>0 ){
    blob_append_sql(&sql, " LIMIT %d", n);
    url_add_parameter(&url, "n", P("n"));
  }
  blob_append_sql(&sql, " /*sort*/\n");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  if( P("showsql")!=0 ){
    @ <p>SQL: <blockquote><pre>%h(blob_str(&sql))</blockquote></pre>
  }
  zMark = P("m");
  if( zMark ){
    selRid = symbolic_name_to_rid(zMark, "*");
  }
  blob_reset(&sql);
  blob_zero(&title);
  if( ridFrom ){
    char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", ridFrom);
    char *zLink = href("%R/info/%!S", zUuid);
    if( ridTo ){
      blob_appendf(&title, "Changes to file ");
    }else if( n>0 ){
      blob_appendf(&title, "First %d ancestors of file ", n);
    }else{
      blob_appendf(&title, "Ancestors of file ");
    }
    blob_appendf(&title,"%z%h</a>",
                 href("%R/file?name=%T&ci=%!S", zFilename, zUuid),
                 zFilename);
    if( fShowId ) blob_appendf(&title, " (%d)", fnid);
    blob_append(&title, ridTo ? " between " : " from ", -1);
    blob_appendf(&title, "check-in %z%S</a>", zLink, zUuid);
    if( fShowId ) blob_appendf(&title, " (%d)", ridFrom);
    fossil_free(zUuid);
    if( ridTo ){
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", ridTo);
      zLink = href("%R/info/%!S", zUuid);
      blob_appendf(&title, " and check-in %z%S</a>", zLink, zUuid);
      fossil_free(zUuid);
    }
  }else if( ridCi ){
  blob_appendf(&title, "History of ");
  hyperlinked_path(zFilename, &title);
    blob_appendf(&title, "History of file ");
    hyperlinked_path(zFilename, &title, 0, "tree", "", LINKPATH_FILE);
    if( fShowId ) blob_appendf(&title, " (%d)", fnid);
    blob_appendf(&title, " at check-in %z%h</a>",
        href("%R/info?name=%t",zCI), zCI);
  }else{
    blob_appendf(&title, "History for ");
    hyperlinked_path(zFilename, &title, 0, "tree", "", LINKPATH_FILE);
    if( fShowId ) blob_appendf(&title, " (%d)", fnid);
  }
  if( uBg ){
    blob_append(&title, " (color-coded by user)", -1);
  }
  @ <h2>%b(&title)</h2>
  blob_reset(&title);
  pGraph = graph_init();
  @ <div id="canvas" style="position:relative;width:1px;height:1px;"></div>
  @ <table cellspacing=0 border=0 cellpadding=0>
  @ <table id="timelineTable%d(iTableId)" class="timelineTable">
  mxfnid = db_int(0, "SELECT max(fnid) FROM filename");
  if( ridFrom ){
    db_prepare(&qparent,
      "SELECT DISTINCT pid*%d+CASE WHEN pfnid>0 THEN pfnid ELSE fnid END"
      "  FROM mlink"
      " WHERE fid=:fid AND mid=:mid AND pid>0 AND fnid=:fnid"
      "   AND pmid IN (SELECT rid FROM ancestor)"
      " ORDER BY isaux /*sort*/", mxfnid+1
    );
  }else{
    db_prepare(&qparent,
      "SELECT DISTINCT pid*%d+CASE WHEN pfnid>0 THEN pfnid ELSE fnid END"
      "  FROM mlink"
      " WHERE fid=:fid AND mid=:mid AND pid>0 AND fnid=:fnid"
      " ORDER BY isaux /*sort*/", mxfnid+1
    );
  }
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zCom = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    int fpid = db_column_int(&q, 3);
    int frid = db_column_int(&q, 4);
    const char *zPUuid = db_column_text(&q, 5);
    const char *zUuid = db_column_text(&q, 6);
    const char *zCkin = db_column_text(&q,7);
    const char *zBgClr = db_column_text(&q, 8);
    const char *zBr = db_column_text(&q, 9);
    int fmid = db_column_int(&q, 10);
    int pfnid = db_column_int(&q, 11);
    int szFile = db_column_int(&q, 12);
    int fnid = db_column_int(&q, 13);
    const char *zFName = db_column_text(&q,14);
    int gidx;
    char zTime[10];
    int nParent = 0;
    int bIsModified = 0;
    GraphRowId aParent[GR_MAX_RAIL];
    char zShort[20];
    char zShortCkin[20];

    db_bind_int(&qparent, ":fid", frid);
    db_bind_int(&qparent, ":mid", fmid);
    db_bind_int(&qparent, ":fnid", fnid);
    while( db_step(&qparent)==SQLITE_ROW && nParent<count(aParent) ){
      aParent[nParent] = db_column_int64(&qparent, 0);
      nParent++;
    }
    db_reset(&qparent);
    if( zBr==0 ) zBr = "trunk";
    if( uBg ){
      zBgClr = user_color(zUser);
    }else if( brBg || zBgClr==0 || zBgClr[0]==0 ){
      zBgClr = strcmp(zBr,"trunk")==0 ? "" : hash_color(zBr);
    }
    gidx = graph_add_row(pGraph, frid, fpid>0 ? 1 : 0, &fpid, zBr, zBgClr);
    if( memcmp(zDate, zPrevDate, 10) ){
      sprintf(zPrevDate, "%.10s", zDate);
    gidx = graph_add_row(pGraph,
                   frid>0 ? (GraphRowId)frid*(mxfnid+1)+fnid : fpid+1000000000,
                   nParent, 0, aParent, zBr, zBgClr,
                   zUuid, 0);
    if( strncmp(zDate, zPrevDate, 10) ){
      sqlite3_snprintf(sizeof(zPrevDate), zPrevDate, "%.10s", zDate);
      @ <tr><td>
      @   <div class="divider"><nobr>%s(zPrevDate)</nobr></div>
      @ </td></tr>
      @   <div class="divider timelineDate">%s(zPrevDate)</div>
      @ </td><td></td><td></td></tr>
    }
    memcpy(zTime, &zDate[11], 5);
    zTime[5] = 0;
    if( frid==selRid ){
      @ <tr class='timelineSelected'>
    }else{
    @ <tr><td valign="top" align="right">
    @ <a href="%s(g.zTop)/timeline?c=%t(zDate)">%s(zTime)</a></td>
    @ <td width="20" align="left" valign="top"><div id="m%d(gidx)"></div></td>
      @ <tr>
    }
    @ <td class="timelineTime">\
    @ %z(href("%R/file?name=%T&ci=%!S",zFName,zCkin))%s(zTime)</a></td>
    @ <td class="timelineGraph"><div id="m%d(gidx)" class="tl-nodemark"></div>
    @ </td>
    if( zBgClr && zBgClr[0] ){
      @ <td valign="top" align="left" bgcolor="%h(zBgClr)">
      @ <td class="timeline%s(zStyle)Cell" id='mc%d(gidx)'>
    }else{
      @ <td valign="top" align="left">
      @ <td class="timeline%s(zStyle)Cell">
    }
    sqlite3_snprintf(sizeof(zShort), zShort, "%.10s", zUuid);
    sqlite3_snprintf(sizeof(zShortCkin), zShortCkin, "%.10s", zCkin);
    if( zUuid ){
      if( g.okHistory ){
    if( zPUuid && zUuid && fossil_strcmp(zPUuid, zUuid)!=0 ){
      bIsModified = 1;
    }
    if( tmFlags & TIMELINE_COMPACT ){
      @ <span class='timelineCompactComment' data-id='%d(frid)'>
    }else{
      @ <span class='timeline%s(zStyle)Comment'>
      if( pfnid ){
        char *zPrevName = db_text(0,"SELECT name FROM filename WHERE fnid=%d",
                                   pfnid);
        if( bIsModified ){
          @ <b>Renamed and modified</b> %h(zPrevName) &rarr; %h(zFName).
        }else{
          @ <b>Renamed</b> %h(zPrevName) &rarr; %h(zFName).
        }
        fossil_free(zPrevName);
      }
      if( zUuid && ridTo==0 && nParent==0 ){
        @ <b>Added:</b>
      }
      if( zUuid==0 ){
        char *zNewName;
        zNewName = db_text(0,
          "SELECT name FROM filename WHERE fnid = "
          "   (SELECT fnid FROM mlink"
          "     WHERE mid=%d"
          "       AND pfnid IN (SELECT fnid FROM filename WHERE name=%Q))",
          fmid, zFName);
        if( zNewName ){
        @ <a href="%s(g.zTop)/artifact/%s(zUuid)">[%S(zUuid)]</a>
      }else{
        @ [%S(zUuid)]
      }
      @ part of check-in
    }else{
      @ <b>Deleted</b> by check-in
    }
    hyperlink_to_uuid(zShortCkin);
    @ %h(zCom) (user: 
    hyperlink_to_user(zUser, zDate, "");
    @ branch: %h(zBr))
          @ <b>Renamed</b> to
          @ %z(href("%R/finfo?name=%t",zNewName))%h(zNewName)</a>.
          fossil_free(zNewName);
        }else{
          @ <b>Deleted:</b>
        }
      }
      if( (tmFlags & TIMELINE_VERBOSE)!=0 && zUuid ){
        hyperlink_to_version(zUuid);
        if( fShowId ){
          int srcId = delta_source_rid(frid);
          if( srcId ){
            @ (%z(href("%R/deltachain/%d",frid))%d(frid)&larr;%d(srcId)</a>)
          }else{
            @ (%z(href("%R/deltachain/%d",frid))%d(frid)</a>)
          }
        }
        @ part of check-in \
        hyperlink_to_version(zCkin);
      }
    }
    @ %W(zCom)</span>
    if( (tmFlags & TIMELINE_COMPACT)!=0 ){
      @ <span class='timelineEllipsis' data-id='%d(frid)' \
      @ id='ellipsis-%d(frid)'>...</span>
    }
    if( tmFlags & TIMELINE_COLUMNAR ){
      if( zBgClr && zBgClr[0] ){
        @ <td class="timelineDetailCell" id='md%d(gidx)'>
      }else{
        @ <td class="timelineDetailCell">
      }
    }
    if( tmFlags & TIMELINE_COMPACT ){
      cgi_printf("<span class='clutter' id='detail-%d'>",frid);
    }
    cgi_printf("<span class='timeline%sDetail'>", zStyle);
    if( tmFlags & (TIMELINE_COMPACT|TIMELINE_VERBOSE) ) cgi_printf("(");
    if( zUuid && (tmFlags & TIMELINE_VERBOSE)==0 ){
      @ file:&nbsp;%z(href("%R/file?name=%T&ci=%!S",zFName,zCkin))\
      @ [%S(zUuid)]</a>
      if( fShowId ){
        int srcId = delta_source_rid(frid);
        if( srcId>0 ){
          @ id:&nbsp;%z(href("%R/deltachain/%d",frid))\
          @ %d(frid)&larr;%d(srcId)</a>
        }else{
          @ id:&nbsp;%z(href("%R/deltachain/%d",frid))%d(frid)</a>
        }
      }
    }
    @ check-in:&nbsp;\
    hyperlink_to_version(zCkin);
    if( fShowId ){
      @ (%d(fmid))
    }
    @ user:&nbsp;\
    hyperlink_to_user(zUser, zDate, ",");
    @ branch:&nbsp;%z(href("%R/timeline?t=%T",zBr))%h(zBr)</a>,
    if( g.okHistory && zUuid ){
      if( fpid ){
    if( tmFlags & (TIMELINE_COMPACT|TIMELINE_VERBOSE) ){
        @ <a href="%s(g.zTop)/fdiff?v1=%s(zPUuid)&amp;v2=%s(zUuid)">[diff]</a>
      }
      @ <a href="%s(g.zTop)/annotate?checkin=%S(zCkin)&amp;filename=%h(zFilename)">
      @ size:&nbsp;%d(szFile))
    }else{
      @ size:&nbsp;%d(szFile)
    }
    if( g.perm.Hyperlink && zUuid ){
      const char *z = zFName;
      @ <span id='links-%d(frid)'><span class='timelineExtraLinks'>
      @ %z(href("%R/annotate?filename=%h&checkin=%s",z,zCkin))
      @ [annotate]</a>
      @ %z(href("%R/blame?filename=%h&checkin=%s",z,zCkin))
      @ [blame]</a>
      @ %z(href("%R/timeline?uf=%!S",zUuid))[check-ins&nbsp;using]</a>
      if( fpid>0 && bIsModified!=0 ){
        @ %z(href("%R/fdiff?v1=%!S&v2=%!S",zPUuid,zUuid))[diff]</a>
    }
    @ </td>
      }
      if( fileedit_is_editable(zFName) ){
        @ %z(href("%R/fileedit?filename=%T&checkin=%!S",zFName,zCkin))\
        @ [edit]</a>
      }
      @ </span></span>
    }
    if( fDebug & FINFO_DEBUG_MLINK ){
      int ii;
      char *zAncLink;
      @ <br>fid=%d(frid) \
      @ graph-id=%lld(frid>0?(GraphRowId)frid*(mxfnid+1)+fnid:fpid+1000000000) \
      @ pid=%d(fpid) mid=%d(fmid) fnid=%d(fnid) \
      @ pfnid=%d(pfnid) mxfnid=%d(mxfnid)
      if( nParent>0 ){
        @ parents=%lld(aParent[0])
        for(ii=1; ii<nParent; ii++){
          @ %lld(aParent[ii])
        }
      }
      zAncLink = href("%R/finfo?name=%T&from=%!S&debug=1",zFName,zCkin);
      @ %z(zAncLink)[ancestry]</a>
    }
    tag_private_status(frid);
    /* End timelineDetail */
    if( tmFlags & TIMELINE_COMPACT ){
      @ </span></span>
    }else{
      @ </span>
    }
    @ </td></tr>
  }
  db_finalize(&q);
  db_finalize(&qparent);
  if( pGraph ){
    graph_finish(pGraph, 1);
    graph_finish(pGraph, 0, TIMELINE_DISJOINT);
    if( pGraph->nErr ){
      graph_free(pGraph);
      pGraph = 0;
    }else{
      @ <tr class="timelineBottom" id="btm-%d(iTableId)">\
      @ <tr><td><td><div style="width:%d(pGraph->mxRail*20+30)px;"></div>
      @ <td></td><td></td><td></td></tr>
    }
  }
  @ </table>
  timeline_output_graph_javascript(pGraph);
  style_footer();
  timeline_output_graph_javascript(pGraph, TIMELINE_FILEDIFF, iTableId);
  style_finish_page();
}

/*
** WEBPAGE: mlink
** URL: /mlink?name=FILENAME
** URL: /mlink?ci=NAME
**
** Show all MLINK table entries for a particular file, or for
** a particular check-in.
**
** This screen is intended for use by Fossil developers to help
** in debugging Fossil itself.  Ordinary Fossil users are not
** expected to know what the MLINK table is or why it is important.
**
** To avoid confusing ordinary users, this page is only available
** to administrators.
*/
void mlink_page(void){
  const char *zFName = P("name");
  const char *zCI = P("ci");
  Stmt q;

  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(g.anon.Admin); return; }
  style_set_current_feature("finfo");
  style_header("MLINK Table");
  if( zFName==0 && zCI==0 ){
    @ <span class='generalError'>
    @ Requires either a name= or ci= query parameter
    @ </span>
  }else if( zFName ){
    int fnid = db_int(0,"SELECT fnid FROM filename WHERE name=%Q",zFName);
    if( fnid<=0 ) fossil_fatal("no such file: \"%s\"", zFName);
    db_prepare(&q,
       "SELECT"
       /* 0 */ "  datetime(event.mtime,toLocal()),"
       /* 1 */ "  (SELECT uuid FROM blob WHERE rid=mlink.mid),"
       /* 2 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pmid),"
       /* 3 */ "  isaux,"
       /* 4 */ "  (SELECT uuid FROM blob WHERE rid=mlink.fid),"
       /* 5 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       /* 6 */ "  mlink.pid,"
       /* 7 */ "  mperm,"
       /* 8 */ "  (SELECT name FROM filename WHERE fnid=mlink.pfnid)"
       "  FROM mlink, event"
       " WHERE mlink.fnid=%d"
       "   AND event.objid=mlink.mid"
       " ORDER BY 1 DESC",
       fnid
    );
    style_table_sorter();
    @ <h1>MLINK table for file
    @ <a href='%R/finfo?name=%t(zFName)'>%h(zFName)</a></h1>
    @ <div class='brlist'>
    @ <table class='sortable' data-column-types='tttxtttt' data-init-sort='1'>
    @ <thead><tr>
    @ <th>Date</th>
    @ <th>Check-in</th>
    @ <th>Parent<br>Check-in</th>
    @ <th>Merge?</th>
    @ <th>New</th>
    @ <th>Old</th>
    @ <th>Exe<br>Bit?</th>
    @ <th>Prior<br>Name</th>
    @ </tr></thead>
    @ <tbody>
    while( db_step(&q)==SQLITE_ROW ){
      const char *zDate = db_column_text(&q,0);
      const char *zCkin = db_column_text(&q,1);
      const char *zParent = db_column_text(&q,2);
      int isMerge = db_column_int(&q,3);
      const char *zFid = db_column_text(&q,4);
      const char *zPid = db_column_text(&q,5);
      int isExe = db_column_int(&q,7);
      const char *zPrior = db_column_text(&q,8);
      @ <tr>
      @ <td><a href='%R/timeline?c=%!S(zCkin)'>%s(zDate)</a></td>
      @ <td><a href='%R/info/%!S(zCkin)'>%S(zCkin)</a></td>
      if( zParent ){
        @ <td><a href='%R/info/%!S(zParent)'>%S(zParent)</a></td>
      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isMerge?"&#x2713;":"")</td>
      if( zFid ){
        @ <td><a href='%R/info/%!S(zFid)'>%S(zFid)</a></td>
      }else{
        @ <td><i>(Deleted)</i></td>
      }
      if( zPid ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zPid)</a>
      }else if( db_column_int(&q,6)<0 ){
        @ <td><i>(Added by merge)</i></td>
      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isExe?"&#x2713;":"")</td>
      if( zPrior ){
        @ <td><a href='%R/finfo?name=%t(zPrior)'>%h(zPrior)</a></td>
      }else{
        @ <td></td>
      }
      @ </tr>
    }
    db_finalize(&q);
    @ </tbody>
    @ </table>
    @ </div>
  }else{
    int mid = name_to_rid_www("ci");
    db_prepare(&q,
       "SELECT"
       /* 0 */ "  (SELECT name FROM filename WHERE fnid=mlink.fnid),"
       /* 1 */ "  (SELECT uuid FROM blob WHERE rid=mlink.fid),"
       /* 2 */ "  pid,"
       /* 3 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pid),"
       /* 4 */ "  (SELECT name FROM filename WHERE fnid=mlink.pfnid),"
       /* 5 */ "  (SELECT uuid FROM blob WHERE rid=mlink.pmid),"
       /* 6 */ "  mperm,"
       /* 7 */ "  isaux"
       "  FROM mlink WHERE mid=%d ORDER BY 1",
       mid
    );
    @ <h1>MLINK table for check-in %h(zCI)</h1>
    render_checkin_context(mid, 0, 1, 0);
    style_table_sorter();
    @ <hr>
    @ <div class='brlist'>
    @ <table class='sortable' data-column-types='ttxtttt' data-init-sort='1'>
    @ <thead><tr>
    @ <th>File</th>
    @ <th>Parent<br>Check-in</th>
    @ <th>Merge?</th>
    @ <th>New</th>
    @ <th>Old</th>
    @ <th>Exe<br>Bit?</th>
    @ <th>Prior<br>Name</th>
    @ </tr></thead>
    @ <tbody>
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q,0);
      const char *zFid = db_column_text(&q,1);
      const char *zPid = db_column_text(&q,3);
      const char *zPrior = db_column_text(&q,4);
      const char *zParent = db_column_text(&q,5);
      int isExec = db_column_int(&q,6);
      int isAux = db_column_int(&q,7);
      @ <tr>
      @ <td><a href='%R/finfo?name=%t(zName)'>%h(zName)</a></td>
      if( zParent ){
        @ <td><a href='%R/info/%!S(zParent)'>%S(zParent)</a></td>
      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isAux?"&#x2713;":"")</td>
      if( zFid ){
        @ <td><a href='%R/info/%!S(zFid)'>%S(zFid)</a></td>
      }else{
        @ <td><i>(Deleted)</i></td>
      }
      if( zPid ){
        @ <td><a href='%R/info/%!S(zPid)'>%S(zPid)</a>
      }else if( db_column_int(&q,2)<0 ){
        @ <td><i>(Added by merge)</i></td>
      }else{
        @ <td><i>(New)</i></td>
      }
      @ <td align='center'>%s(isExec?"&#x2713;":"")</td>
      if( zPrior ){
        @ <td><a href='%R/finfo?name=%t(zPrior)'>%h(zPrior)</a></td>
      }else{
        @ <td></td>
      }
      @ </tr>
    }
    db_finalize(&q);
    @ </tbody>
    @ </table>
    @ </div>
  }
  style_finish_page();
}
Added src/foci.c.






















































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This routine implements eponymous virtual table for SQLite that gives
** all of the files associated with a single check-in.  The table works
** as a table-valued function.
**
** The source code filename "foci" is short for "Files of Check-in".
**
** Usage example:
**
**    SELECT * FROM files_of_checkin('trunk');
**
** The "schema" for the temp.foci table is:
**
**     CREATE TABLE files_of_checkin(
**       checkinID    INTEGER,    -- RID for the check-in manifest
**       filename     TEXT,       -- Name of a file
**       uuid         TEXT,       -- hash of the file
**       previousName TEXT,       -- Name of the file in previous check-in
**       perm         TEXT,       -- Permissions on the file
**       symname      TEXT HIDDEN -- Symbolic name of the check-in.
**     );
**
** The hidden symname column is (optionally) used as a query parameter to
** identify the particular check-in to parse.  The checkinID parameter
** (such is a unique numeric RID rather than symbolic name) can also be used
** to identify the check-in.  Example:
**
**    SELECT * FROM files_of_checkin
**     WHERE checkinID=symbolic_name_to_rid('trunk');
**
*/
#include "config.h"
#include "foci.h"
#include <assert.h>

/*
** The schema for the virtual table:
*/
static const char zFociSchema[] =
@ CREATE TABLE files_of_checkin(
@  checkinID    INTEGER,    -- RID for the check-in manifest
@  filename     TEXT,       -- Name of a file
@  uuid         TEXT,       -- hash of the file
@  previousName TEXT,       -- Name of the file in previous check-in
@  perm         TEXT,       -- Permissions on the file
@  symname      TEXT HIDDEN -- Symbolic name of the check-in
@ );
;

#define FOCI_CHECKINID   0
#define FOCI_FILENAME    1
#define FOCI_UUID        2
#define FOCI_PREVNAME    3
#define FOCI_PERM        4
#define FOCI_SYMNAME     5

#if INTERFACE
/*
** The subclasses of sqlite3_vtab  and sqlite3_vtab_cursor tables
** that implement the files_of_checkin virtual table.
*/
struct FociTable {
  sqlite3_vtab base;        /* Base class - must be first */
};
struct FociCursor {
  sqlite3_vtab_cursor base; /* Base class - must be first */
  Manifest *pMan;           /* Current manifest */
  ManifestFile *pFile;      /* Current file */
  int iFile;                /* File index */
};
#endif /* INTERFACE */


/*
** Connect to or create a foci virtual table.
*/
static int fociConnect(
  sqlite3 *db,
  void *pAux,
  int argc, const char *const*argv,
  sqlite3_vtab **ppVtab,
  char **pzErr
){
  FociTable *pTab;

  pTab = (FociTable *)sqlite3_malloc(sizeof(FociTable));
  memset(pTab, 0, sizeof(FociTable));
  sqlite3_declare_vtab(db, zFociSchema);
  *ppVtab = &pTab->base;
  return SQLITE_OK;
}

/*
** Disconnect from or destroy a focivfs virtual table.
*/
static int fociDisconnect(sqlite3_vtab *pVtab){
  sqlite3_free(pVtab);
  return SQLITE_OK;
}

/*
** Available scan methods:
**
**   (0)     A full scan.  Visit every manifest in the repo.  (Slow)
**   (1)     checkinID=?.  visit only the single manifest specified.
**   (2)     symName=?     visit only the single manifest specified.
*/
static int fociBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
  int i;
  pIdxInfo->estimatedCost = 1000000000.0;
  for(i=0; i<pIdxInfo->nConstraint; i++){
    if( !pIdxInfo->aConstraint[i].usable ) continue;
    if( pIdxInfo->aConstraint[i].op==SQLITE_INDEX_CONSTRAINT_EQ
     && (pIdxInfo->aConstraint[i].iColumn==FOCI_CHECKINID
            || pIdxInfo->aConstraint[i].iColumn==FOCI_SYMNAME)
    ){
      if( pIdxInfo->aConstraint[i].iColumn==FOCI_CHECKINID ){
        pIdxInfo->idxNum = 1;
      }else{
        pIdxInfo->idxNum = 2;
      }
      pIdxInfo->estimatedCost = 1.0;
      pIdxInfo->aConstraintUsage[i].argvIndex = 1;
      pIdxInfo->aConstraintUsage[i].omit = 1;
      break;
    }
  }
  return SQLITE_OK;
}

/*
** Open a new focivfs cursor.
*/
static int fociOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){
  FociCursor *pCsr;
  pCsr = (FociCursor *)sqlite3_malloc(sizeof(FociCursor));
  memset(pCsr, 0, sizeof(FociCursor));
  pCsr->base.pVtab = pVTab;
  *ppCursor = (sqlite3_vtab_cursor *)pCsr;
  return SQLITE_OK;
}

/*
** Close a focivfs cursor.
*/
static int fociClose(sqlite3_vtab_cursor *pCursor){
  FociCursor *pCsr = (FociCursor *)pCursor;
  manifest_destroy(pCsr->pMan);
  sqlite3_free(pCsr);
  return SQLITE_OK;
}

/*
** Move a focivfs cursor to the next entry in the file.
*/
static int fociNext(sqlite3_vtab_cursor *pCursor){
  FociCursor *pCsr = (FociCursor *)pCursor;
  pCsr->pFile = manifest_file_next(pCsr->pMan, 0);
  pCsr->iFile++;
  return SQLITE_OK;
}

static int fociEof(sqlite3_vtab_cursor *pCursor){
  FociCursor *pCsr = (FociCursor *)pCursor;
  return pCsr->pFile==0;
}

static int fociFilter(
  sqlite3_vtab_cursor *pCursor,
  int idxNum, const char *idxStr,
  int argc, sqlite3_value **argv
){
  FociCursor *pCur = (FociCursor *)pCursor;
  manifest_destroy(pCur->pMan);
  if( idxNum ){
    int rid;
    if( idxNum==1 ){
      rid = sqlite3_value_int(argv[0]);
    }else{
      rid = symbolic_name_to_rid((const char*)sqlite3_value_text(argv[0]),"ci");
    }
    pCur->pMan = manifest_get(rid, CFTYPE_MANIFEST, 0);
    if( pCur->pMan ){
      manifest_file_rewind(pCur->pMan);
      pCur->pFile = manifest_file_next(pCur->pMan, 0);
    }
  }else{
    pCur->pMan = 0;
  }
  pCur->iFile = 0;
  return SQLITE_OK;
}

static int fociColumn(
  sqlite3_vtab_cursor *pCursor,
  sqlite3_context *ctx,
  int i
){
  FociCursor *pCsr = (FociCursor *)pCursor;
  switch( i ){
    case FOCI_CHECKINID:
      sqlite3_result_int(ctx, pCsr->pMan->rid);
      break;
    case FOCI_FILENAME:
      sqlite3_result_text(ctx, pCsr->pFile->zName, -1,
                          SQLITE_TRANSIENT);
      break;
    case FOCI_UUID:
      sqlite3_result_text(ctx, pCsr->pFile->zUuid, -1,
                          SQLITE_TRANSIENT);
      break;
    case FOCI_PREVNAME:
      sqlite3_result_text(ctx, pCsr->pFile->zPrior, -1,
                          SQLITE_TRANSIENT);
      break;
    case FOCI_PERM:
      sqlite3_result_text(ctx, pCsr->pFile->zPerm, -1,
                          SQLITE_TRANSIENT);
      break;
    case FOCI_SYMNAME:
      break;
  }
  return SQLITE_OK;
}

static int fociRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){
  FociCursor *pCsr = (FociCursor *)pCursor;
  *pRowid = pCsr->iFile;
  return SQLITE_OK;
}

int foci_register(sqlite3 *db){
  static sqlite3_module foci_module = {
    0,                            /* iVersion */
    fociConnect,                  /* xCreate */
    fociConnect,                  /* xConnect */
    fociBestIndex,                /* xBestIndex */
    fociDisconnect,               /* xDisconnect */
    fociDisconnect,               /* xDestroy */
    fociOpen,                     /* xOpen - open a cursor */
    fociClose,                    /* xClose - close a cursor */
    fociFilter,                   /* xFilter - configure scan constraints */
    fociNext,                     /* xNext - advance a cursor */
    fociEof,                      /* xEof - check for end of scan */
    fociColumn,                   /* xColumn - read data */
    fociRowid,                    /* xRowid - read data */
    0,                            /* xUpdate */
    0,                            /* xBegin */
    0,                            /* xSync */
    0,                            /* xCommit */
    0,                            /* xRollback */
    0,                            /* xFindFunction */
    0,                            /* xRename */
    0,                            /* xSavepoint */
    0,                            /* xRelease */
    0,                            /* xRollbackTo */
    0,                            /* xShadowName */
    0                             /* xIntegrity  */
  };
  sqlite3_create_module(db, "files_of_checkin", &foci_module, 0);
  return SQLITE_OK;
}
Added src/forum.c.























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to generate the user forum.
*/
#include "config.h"
#include <assert.h>
#include "forum.h"

/*
** Default to using Markdown markup
*/
#define DEFAULT_FORUM_MIMETYPE  "text/x-markdown"

#if INTERFACE
/*
** Each instance of the following object represents a single message -
** either the initial post, an edit to a post, a reply, or an edit to
** a reply.
*/
struct ForumPost {
  int fpid;              /* rid for this post */
  int sid;               /* Serial ID number */
  int rev;               /* Revision number */
  char *zUuid;           /* Artifact hash */
  char *zDisplayName;    /* Name of user who wrote this post */
  double rDate;          /* Date for this post */
  ForumPost *pIrt;       /* This post replies to pIrt */
  ForumPost *pEditHead;  /* Original, unedited post */
  ForumPost *pEditTail;  /* Most recent edit for this post */
  ForumPost *pEditNext;  /* This post is edited by pEditNext */
  ForumPost *pEditPrev;  /* This post is an edit of pEditPrev */
  ForumPost *pNext;      /* Next in chronological order */
  ForumPost *pPrev;      /* Previous in chronological order */
  ForumPost *pDisplay;   /* Next in display order */
  int nEdit;             /* Number of edits to this post */
  int nIndent;           /* Number of levels of indentation for this post */
  int iClosed;           /* See forum_rid_is_closed() */
};

/*
** A single instance of the following tracks all entries for a thread.
*/
struct ForumThread {
  ForumPost *pFirst;     /* First post in chronological order */
  ForumPost *pLast;      /* Last post in chronological order */
  ForumPost *pDisplay;   /* Entries in display order */
  ForumPost *pTail;      /* Last on the display list */
  int mxIndent;          /* Maximum indentation level */
};
#endif /* INTERFACE */

/*
** Return true if the forum post with the given rid has been
** subsequently edited.
*/
int forum_rid_has_been_edited(int rid){
  static Stmt q;
  int res;
  db_static_prepare(&q,
     "SELECT 1 FROM forumpost A, forumpost B"
     " WHERE A.fpid=$rid AND B.froot=A.froot AND B.fprev=$rid"
  );
  db_bind_int(&q, "$rid", rid);
  res = db_step(&q)==SQLITE_ROW;
  db_reset(&q);
  return res;
}

/*
** Given a valid forumpost.fpid value, this function returns the first
** fpid in the chain of edits for that forum post, or rid if no prior
** versions are found.
*/
static int forumpost_head_rid(int rid){
  Stmt q;
  int rcRid = rid;

  db_prepare(&q, "SELECT fprev FROM forumpost"
             " WHERE fpid=:rid AND fprev IS NOT NULL");
  db_bind_int(&q, ":rid", rid);
  while( SQLITE_ROW==db_step(&q) ){
    rcRid = db_column_int(&q, 0);
    db_reset(&q);
    db_bind_int(&q, ":rid", rcRid);
  }
  db_finalize(&q);
  return rcRid;
}

/*
** Returns true if p, or any parent of p, has a non-zero iClosed
** value.  Returns 0 if !p. For an edited chain of post, the tag is
** checked on the pEditHead entry, to simplify subsequent unlocking of
** the post.
**
** If bCheckIrt is true then p's thread in-response-to parents are
** checked (recursively) for closure, else only p is checked.
*/
static int forumpost_is_closed(ForumPost *p, int bCheckIrt){
  while(p){
    if( p->pEditHead ) p = p->pEditHead;
    if( p->iClosed || !bCheckIrt ) return p->iClosed;
    p = p->pIrt;
  }
  return 0;
}

/*
** Given a forum post RID, this function returns true if that post has
** (or inherits) an active "closed" tag. If bCheckIrt is true then
** the post to which the given post responds is also checked
** (recursively), else they are not. When checking in-response-to
** posts, the first one which is closed ends the search.
**
** Note that this function checks _exactly_ the given rid, whereas
** forum post closure/re-opening is always applied to the head of an
** edit chain so that we get consistent implied locking beheavior for
** later versions and responses to arbitrary versions in the
** chain. Even so, the "closed" tag is applied as a propagating tag
** so will apply to all edits in a given chain.
**
** The return value is one of:
**
** - 0 if no "closed" tag is found.
**
** - The tagxref.rowid of the tagxref entry for the closure if rid is
**   the forum post to which the closure applies.
**
** - (-tagxref.rowid) if the given rid inherits a "closed" tag from an
**   IRT forum post.
*/
static int forum_rid_is_closed(int rid, int bCheckIrt){
  static Stmt qIrt = empty_Stmt_m;
  int rc = 0, i = 0;
  /* TODO: this can probably be turned into a CTE by someone with
  ** superior SQL-fu. */
  for( ; rid; i++ ){
    rc = rid_has_active_tag_name(rid, "closed");
    if( rc || !bCheckIrt ) break;
    else if( !qIrt.pStmt ) {
      db_static_prepare(&qIrt,
        "SELECT firt FROM forumpost "
        "WHERE fpid=$fpid ORDER BY fmtime DESC"
      );
    }
    db_bind_int(&qIrt, "$fpid", rid);
    rid = SQLITE_ROW==db_step(&qIrt) ? db_column_int(&qIrt, 0) : 0;
    db_reset(&qIrt);
  }
  return i ? -rc : rc;
}

/*
** Closes or re-opens the given forum RID via addition of a new
** control artifact into the repository. In order to provide
** consistent behavior for implied closing of responses and later
** versions, it always acts on the first version of the given forum
** post, walking the forumpost.fprev values to find the head of the
** chain.
**
** If doClose is true then a propagating "closed" tag is added, except
** as noted below, with the given optional zReason string as the tag's
** value. If doClose is false then any active "closed" tag on frid is
** cancelled, except as noted below. zReason is ignored if doClose is
** false or if zReason is NULL or starts with a NUL byte.
**
** This function only adds a "closed" tag if forum_rid_is_closed()
** indicates that frid's head is not closed. If a parent post is
** already closed, no tag is added. Similarly, it will only remove a
** "closed" tag from a post which has its own "closed" tag, and will
** not remove an inherited one from a parent post.
**
** If doClose is true and frid is closed (directly or inherited), this
** is a no-op. Likewise, if doClose is false and frid itself is not
** closed (not accounting for an inherited closed tag), this is a
** no-op.
**
** Returns true if it actually creates a new tag, else false. Fails
** fatally on error. If it returns true then any ForumPost::iClosed
** values from previously loaded posts are invalidated if they refer
** to the amended post or a response to it.
**
** Sidebars:
**
** - Unless the caller has a transaction open, via
**   db_begin_transaction(), there is a very tiny race condition
**   window during which the caller's idea of whether or not the forum
**   post is closed may differ from the current repository state.
**
** - This routine assumes that frid really does refer to a forum post.
**
** - This routine assumes that frid is not private or pending
**   moderation.
**
** - Closure of a forum post requires a propagating "closed" tag to
**   account for how edits of posts are handled. This differs from
**   closure of a branch, where a non-propagating tag is used.
*/
static int forumpost_close(int frid, int doClose, const char *zReason){
  Blob artifact = BLOB_INITIALIZER;  /* Output artifact */
  Blob cksum = BLOB_INITIALIZER;     /* Z-card */
  int iClosed;                       /* true if frid is closed */
  int trid;                          /* RID of new control artifact */
  char *zUuid;                       /* UUID of head version of post */

  db_begin_transaction();
  frid = forumpost_head_rid(frid);
  iClosed = forum_rid_is_closed(frid, 1);
  if( (iClosed && doClose
      /* Already closed, noting that in the case of (iClosed<0), it's
      ** actually a parent which is closed. */)
      || (iClosed<=0 && !doClose
          /* This entry is not closed, but a parent post may be. */) ){
    db_end_transaction(0);
    return 0;
  }
  if( doClose==0 || (zReason && !zReason[0]) ){
    zReason = 0;
  }
  zUuid = rid_to_uuid(frid);
  blob_appendf(&artifact, "D %z\n", date_in_standard_format( "now" ));
  blob_appendf(&artifact,
               "T %cclosed %s%s%F\n",
               doClose ? '*' : '-', zUuid,
               zReason ? " " : "", zReason ? zReason : "");
  blob_appendf(&artifact, "U %F\n", login_name());
  md5sum_blob(&artifact, &cksum);
  blob_appendf(&artifact, "Z %b\n", &cksum);
  blob_reset(&cksum);
  trid = content_put_ex(&artifact, 0, 0, 0, 0);
  if( trid==0 ){
    fossil_fatal("Error saving tag artifact: %s", g.zErrMsg);
  }
  if( manifest_crosslink(trid, &artifact,
                         MC_NONE /*MC_PERMIT_HOOKS?*/)==0 ){
    fossil_fatal("%s", g.zErrMsg);
  }
  assert( blob_is_reset(&artifact) );
  db_add_unsent(trid);
  admin_log("%s forum post %S", doClose ? "Close" : "Re-open", zUuid);
  fossil_free(zUuid);
  /* Potential TODO: if (iClosed>0) then we could find the initial tag
  ** artifact and content_deltify(thatRid,&trid,1,0). Given the tiny
  ** size of these artifacts, however, that would save little space,
  ** if any. */
  db_end_transaction(0);
  return 1;
}

/*
** Returns true if the forum-close-policy setting is true, else false,
** caching the result for subsequent calls.
*/
static int forumpost_close_policy(void){
  static int closePolicy = -99;

  if( closePolicy==-99 ){
    closePolicy = db_get_boolean("forum-close-policy",0)>0;
  }
  return closePolicy;
}

/*
** Returns 1 if the current user is an admin, -1 if the current user
** is a forum moderator and the forum-close-policy setting is true,
** else returns 0. The value is cached for subsequent calls.
*/
static int forumpost_may_close(void){
  static int permClose = -99;
  if( permClose!=-99 ){
    return permClose;
  }else if( g.perm.Admin ){
    return permClose = 1;
  }else if( g.perm.ModForum ){
    return permClose = forumpost_close_policy()>0 ? -1 : 0;
  }else{
    return permClose = 0;
  }
}

/*
** Emits a warning that the current forum post is CLOSED and can only
** be edited or responded to by an administrator. */
static void forumpost_error_closed(void){
  @ <div class='error'>This (sub)thread is CLOSED and can only be
  @ edited or replied to by an admin user.</div>
}

/*
** Delete a complete ForumThread and all its entries.
*/
static void forumthread_delete(ForumThread *pThread){
  ForumPost *pPost, *pNext;
  for(pPost=pThread->pFirst; pPost; pPost = pNext){
    pNext = pPost->pNext;
    fossil_free(pPost->zUuid);
    fossil_free(pPost->zDisplayName);
    fossil_free(pPost);
  }
  fossil_free(pThread);
}

/*
** Search a ForumPost list forwards looking for the post with fpid
*/
static ForumPost *forumpost_forward(ForumPost *p, int fpid){
  while( p && p->fpid!=fpid ) p = p->pNext;
  return p;
}

/*
** Search backwards for a ForumPost
*/
static ForumPost *forumpost_backward(ForumPost *p, int fpid){
  while( p && p->fpid!=fpid ) p = p->pPrev;
  return p;
}

/*
** Add a post to the display list
*/
static void forumpost_add_to_display(ForumThread *pThread, ForumPost *p){
  if( pThread->pDisplay==0 ){
    pThread->pDisplay = p;
  }else{
    pThread->pTail->pDisplay = p;
  }
  pThread->pTail = p;
}

/*
** Extend the display list for pThread by adding all entries that
** reference fpid.  The first such post will be no earlier then
** post "p".
*/
static void forumthread_display_order(
  ForumThread *pThread,    /* The complete thread */
  ForumPost *pBase         /* Add replies to this post */
){
  ForumPost *p;
  ForumPost *pPrev = 0;
  ForumPost *pBaseIrt;
  for(p=pBase->pNext; p; p=p->pNext){
    if( !p->pEditPrev && p->pIrt ){
      pBaseIrt = p->pIrt->pEditHead ? p->pIrt->pEditHead : p->pIrt;
      if( pBaseIrt==pBase ){
        if( pPrev ){
          pPrev->nIndent = pBase->nIndent + 1;
          forumpost_add_to_display(pThread, pPrev);
          forumthread_display_order(pThread, pPrev);
        }
        pPrev = p;
      }
    }
  }
  if( pPrev ){
    pPrev->nIndent = pBase->nIndent + 1;
    if( pPrev->nIndent>pThread->mxIndent ) pThread->mxIndent = pPrev->nIndent;
    forumpost_add_to_display(pThread, pPrev);
    forumthread_display_order(pThread, pPrev);
  }
}

/*
** Construct a ForumThread object given the root record id.
*/
static ForumThread *forumthread_create(int froot, int computeHierarchy){
  ForumThread *pThread;
  ForumPost *pPost;
  ForumPost *p;
  Stmt q;
  int sid = 1;
  int firt, fprev;
  pThread = fossil_malloc( sizeof(*pThread) );
  memset(pThread, 0, sizeof(*pThread));
  db_prepare(&q,
     "SELECT fpid, firt, fprev, (SELECT uuid FROM blob WHERE rid=fpid), fmtime"
     "  FROM forumpost"
     " WHERE froot=%d ORDER BY fmtime",
     froot
  );
  while( db_step(&q)==SQLITE_ROW ){
    pPost = fossil_malloc( sizeof(*pPost) );
    memset(pPost, 0, sizeof(*pPost));
    pPost->fpid = db_column_int(&q, 0);
    firt = db_column_int(&q, 1);
    fprev = db_column_int(&q, 2);
    pPost->zUuid = fossil_strdup(db_column_text(&q,3));
    pPost->rDate = db_column_double(&q,4);
    if( !fprev ) pPost->sid = sid++;
    pPost->pPrev = pThread->pLast;
    pPost->pNext = 0;
    if( pThread->pLast==0 ){
      pThread->pFirst = pPost;
    }else{
      pThread->pLast->pNext = pPost;
    }
    pThread->pLast = pPost;

    /* Find the in-reply-to post.  Default to the topic post if the replied-to
    ** post cannot be found. */
    if( firt ){
      pPost->pIrt = pThread->pFirst;
      for(p=pThread->pFirst; p; p=p->pNext){
        if( p->fpid==firt ){
          pPost->pIrt = p;
          break;
        }
      }
    }

    /* Maintain the linked list of post edits. */
    if( fprev ){
      p = forumpost_backward(pPost->pPrev, fprev);
      p->pEditNext = pPost;
      pPost->sid = p->sid;
      pPost->rev = p->rev+1;
      pPost->nEdit = p->nEdit+1;
      pPost->pEditPrev = p;
      pPost->pEditHead = p->pEditHead ? p->pEditHead : p;
      for(; p; p=p->pEditPrev ){
        p->nEdit = pPost->nEdit;
        p->pEditTail = pPost;
      }
    }
    pPost->iClosed = forum_rid_is_closed(pPost->pEditHead
                                         ? pPost->pEditHead->fpid
                                         : pPost->fpid, 1);
  }
  db_finalize(&q);

  if( computeHierarchy ){
    /* Compute the hierarchical display order */
    pPost = pThread->pFirst;
    pPost->nIndent = 1;
    pThread->mxIndent = 1;
    forumpost_add_to_display(pThread, pPost);
    forumthread_display_order(pThread, pPost);
  }

  /* Return the result */
  return pThread;
}

/*
** List all forum threads to standard output.
*/
static void forum_thread_list(void){
  Stmt q;
  db_prepare(&q,
    " SELECT"
    "  datetime(max(fmtime)),"
    "  sum(fprev IS NULL),"
    "  froot"
    " FROM forumpost"
    " GROUP BY froot"
    " ORDER BY 1;"
  );
  fossil_print("    id  cnt    most recent post\n");
  fossil_print("------ ---- -------------------\n");
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("%6d %4d %s\n",
      db_column_int(&q, 2),
      db_column_int(&q, 1),
      db_column_text(&q, 0)
    );
  }
  db_finalize(&q);
}

/*
** COMMAND: test-forumthread
**
** Usage: %fossil test-forumthread [THREADID]
**
** Display a summary of all messages on a thread THREADID.  If the
** THREADID argument is omitted, then show a list of all threads.
**
** This command is intended for testing an analysis only.
*/
void forumthread_cmd(void){
  int fpid;
  int froot;
  const char *zName;
  ForumThread *pThread;
  ForumPost *p;

  db_find_and_open_repository(0,0);
  verify_all_options();
  if( g.argc==2 ){
    forum_thread_list();
    return;
  }
  if( g.argc!=3 ) usage("THREADID");
  zName = g.argv[2];
  fpid = symbolic_name_to_rid(zName, "f");
  if( fpid<=0 ){
    fpid = db_int(0, "SELECT rid FROM blob WHERE rid=%d", atoi(zName));
  }
  if( fpid<=0 ){
    fossil_fatal("unknown or ambiguous forum id: \"%s\"", zName);
  }
  froot = db_int(0, "SELECT froot FROM forumpost WHERE fpid=%d", fpid);
  if( froot==0 ){
    fossil_fatal("Not a forum post: \"%s\"", zName);
  }
  fossil_print("fpid  = %d\n", fpid);
  fossil_print("froot = %d\n", froot);
  pThread = forumthread_create(froot, 1);
  fossil_print("Chronological:\n");
  fossil_print(
/* 0         1         2         3         4         5         6         7    */
/*  123456789 123456789 123456789 123456789 123456789 123456789 123456789 123 */
  " sid  rev  closed      fpid      pIrt pEditPrev pEditTail hash\n");
  for(p=pThread->pFirst; p; p=p->pNext){
    fossil_print("%4d %4d %7d %9d %9d %9d %9d %8.8s\n",
       p->sid, p->rev,
       p->iClosed,
       p->fpid, p->pIrt ? p->pIrt->fpid : 0,
       p->pEditPrev ? p->pEditPrev->fpid : 0,
       p->pEditTail ? p->pEditTail->fpid : 0, p->zUuid);
  }
  fossil_print("\nDisplay\n");
  for(p=pThread->pDisplay; p; p=p->pDisplay){
    fossil_print("%*s", (p->nIndent-1)*3, "");
    if( p->pEditTail ){
      fossil_print("%d->%d", p->fpid, p->pEditTail->fpid);
    }else{
      fossil_print("%d", p->fpid);
    }
    if( p->iClosed ){
      fossil_print(" [closed%s]", p->iClosed<0 ? " via parent" : "");
    }
    fossil_print("\n");
  }
  forumthread_delete(pThread);
}

/*
** WEBPAGE:  forumthreadhashlist
**
** Usage:  /forumthreadhashlist/HASH-OF-ROOT
**
** This page (accessibly only to admins) shows a list of all artifacts
** associated with a single forum thread.  An admin might copy/paste this
** list into the /shun page in order to shun an entire thread.
*/
void forumthreadhashlist(void){
  int fpid;
  int froot;
  const char *zName = P("name");
  ForumThread *pThread;
  ForumPost *p;
  char *fuuid;

  login_check_credentials();
  if( !g.perm.Admin ){
    return;
  }
  if( zName==0 ){
    webpage_error("Missing \"name=\" query parameter");
  }
  fpid = symbolic_name_to_rid(zName, "f");
  if( fpid<=0 ){
    if( fpid==0 ){
      webpage_notfound_error("Unknown forum id: \"%s\"", zName);
    }else{
      ambiguous_page();
    }
    return;
  }
  froot = db_int(0, "SELECT froot FROM forumpost WHERE fpid=%d", fpid);
  if( froot==0 ){
    webpage_notfound_error("Not a forum post: \"%s\"", zName);
  }
  fuuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", froot);
  style_set_current_feature("forum");
  style_header("Artifacts Of Forum Thread");
  @ <h2>
  @ Artifacts associated with the forum thread
  @ <a href="%R/forumthread/%S(fuuid)">%S(fuuid)</a>:</h2>
  @ <pre>
  pThread = forumthread_create(froot, 1);
  for(p=pThread->pFirst; p; p=p->pNext){
    @ %h(p->zUuid)
  }
  forumthread_delete(pThread);
  @ </pre>
  style_finish_page();
}

/*
** Render a forum post for display
*/
void forum_render(
  const char *zTitle,         /* The title.  Might be NULL for no title */
  const char *zMimetype,      /* Mimetype of the message */
  const char *zContent,       /* Content of the message */
  const char *zClass,         /* Put in a <div> if not NULL */
  int bScroll                 /* Large message content scrolls if true */
){
  if( zClass ){
    @ <div class='%s(zClass)'>
  }
  if( zTitle ){
    if( zTitle[0] ){
      @ <h1>%h(zTitle)</h1>
    }else{
      @ <h1><i>Deleted</i></h1>
    }
  }
  if( zContent && zContent[0] ){
    Blob x;
    const int isFossilWiki = zMimetype==0
      || fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0;
    if( bScroll ){
      @ <div class='forumPostBody'>
    }else{
      @ <div class='forumPostFullBody'>
    }
    blob_init(&x, 0, 0);
    blob_append(&x, zContent, -1);
    safe_html_context(DOCSRC_FORUM);
    if( isFossilWiki ){
      /* Markdown and plain-text rendering add a wrapper DIV resp. PRE
      ** element around the post, and some CSS relies on its existence
      ** in order to handle expansion/collapse of the post. Fossil
      ** Wiki rendering does not do so, so we must wrap those manually
      ** here. */
      @ <div class='fossilWiki'>
    }
    wiki_render_by_mimetype(&x, zMimetype);
    if( isFossilWiki ){
      @ </div>
    }
    blob_reset(&x);
    @ </div>
  }else{
    @ <i>Deleted</i>
  }
  if( zClass ){
    @ </div>
  }
}

/*
** Compute a display name from a login name.
**
** If the input login is found in the USER table, then check the USER.INFO
** field to see if it has display-name followed by an email address.
** If it does, that becomes the new display name.  If not, let the display
** name just be the login.
**
** Space to hold the returned name is obtained from fossil_strdup() or
** mprintf() and should be freed by the caller.
**
** HTML markup within the reply has been property escaped.  Hyperlinks
** may have been added.  The result is safe for use with %s.
*/
static char *display_name_from_login(const char *zLogin){
  static Stmt q;
  char *zResult;
  db_static_prepare(&q,
     "SELECT display_name(info) FROM user WHERE login=$login"
  );
  db_bind_text(&q, "$login", zLogin);
  if( db_step(&q)==SQLITE_ROW && db_column_type(&q,0)==SQLITE_TEXT ){
    const char *zDisplay = db_column_text(&q,0);
    if( fossil_strcmp(zDisplay,zLogin)==0 ){
      zResult = mprintf("%z%h</a>",
                  href("%R/timeline?ss=v&y=f&vfx&u=%t",zLogin),zLogin);
    }else{
      zResult = mprintf("%s (%z%h</a>)", zDisplay,
                  href("%R/timeline?ss=v&y=f&vfx&u=%t",zLogin),zLogin);
    }
  }else{
    zResult = mprintf("%z%h</a>",
                href("%R/timeline?ss=v&y=f&vfx&u=%t",zLogin),zLogin);
  }
  db_reset(&q);
  return zResult;
}

/*
** Compute and return the display name for a ForumPost.  If
** pManifest is not NULL, then it is a Manifest object for the post.
** if pManifest is NULL, this routine has to fetch and parse the
** Manifest object for itself.
**
** Memory to hold the display name is attached to p->zDisplayName
** and will be freed together with the ForumPost object p when it
** is freed.
**
** The returned text has had all HTML markup escaped and is safe for
** use within %s.
*/
static char *forum_post_display_name(ForumPost *p, Manifest *pManifest){
  Manifest *pToFree = 0;
  if( p->zDisplayName ) return p->zDisplayName;
  if( pManifest==0 ){
    pManifest = pToFree = manifest_get(p->fpid, CFTYPE_FORUM, 0);
    if( pManifest==0 ) return "(unknown)";
  }
  p->zDisplayName = display_name_from_login(pManifest->zUser);
  if( pToFree ) manifest_destroy(pToFree);
  if( p->zDisplayName==0 ) return "(unknown)";
  return p->zDisplayName;
}


/*
** Display a single post in a forum thread.
*/
static void forum_display_post(
  ForumPost *p,         /* Forum post to display */
  int iIndentScale,     /* Indent scale factor */
  int bRaw,             /* True to omit the border */
  int bUnf,             /* True to leave the post unformatted */
  int bHist,            /* True if showing edit history */
  int bSelect,          /* True if this is the selected post */
  char *zQuery          /* Common query string */
){
  char *zPosterName;    /* Name of user who originally made this post */
  char *zEditorName;    /* Name of user who provided the current edit */
  char *zDate;          /* The time/date string */
  char *zHist;          /* History query string */
  Manifest *pManifest;  /* Manifest comprising the current post */
  int bPrivate;         /* True for posts awaiting moderation */
  int bSameUser;        /* True if author is also the reader */
  int iIndent;          /* Indent level */
  int iClosed;          /* True if (sub)thread is closed */
  const char *zMimetype;/* Formatting MIME type */

  /* Get the manifest for the post.  Abort if not found (e.g. shunned). */
  pManifest = manifest_get(p->fpid, CFTYPE_FORUM, 0);
  if( !pManifest ) return;
  iClosed = forumpost_is_closed(p, 1);
  /* When not in raw mode, create the border around the post. */
  if( !bRaw ){
    /* Open the <div> enclosing the post.  Set the class string to mark the post
    ** as selected and/or obsolete. */
    iIndent = (p->pEditHead ? p->pEditHead->nIndent : p->nIndent)-1;
    @ <div id='forum%d(p->fpid)' class='forumTime\
    @ %s(bSelect ? " forumSel" : "")\
    @ %s(iClosed ? " forumClosed" : "")\
    @ %s(p->pEditTail ? " forumObs" : "")' \
    if( iIndent && iIndentScale ){
      @ style='margin-left:%d(iIndent*iIndentScale)ex;'>
    }else{
      @ >
    }

    /* If this is the first post (or an edit thereof), emit the thread title. */
    if( pManifest->zThreadTitle ){
      @ <h1>%h(pManifest->zThreadTitle)</h1>
    }

    /* Begin emitting the header line.  The forum of the title
    ** varies depending on whether:
    **    *  The post is unedited
    **    *  The post was last edited by the original author
    **    *  The post was last edited by a different person
    */
    if( p->pEditHead ){
      zDate = db_text(0, "SELECT datetime(%.17g,toLocal())",
                      p->pEditHead->rDate);
    }else{
      zPosterName = forum_post_display_name(p, pManifest);
      zEditorName = zPosterName;
    }
    zDate = db_text(0, "SELECT datetime(%.17g,toLocal())", p->rDate);
    if( p->pEditPrev ){
      zPosterName = forum_post_display_name(p->pEditHead, 0);
      zEditorName = forum_post_display_name(p, pManifest);
      zHist = bHist ? "" : zQuery[0]==0 ? "?hist" : "&hist";
      @ <h3 class='forumPostHdr'>(%d(p->sid)\
      @ .%0*d(fossil_num_digits(p->nEdit))(p->rev))
      if( fossil_strcmp(zPosterName, zEditorName)==0 ){
        @ By %s(zPosterName) on %h(zDate) edited from \
        @ %z(href("%R/forumpost/%S%s%s",p->pEditPrev->zUuid,zQuery,zHist))\
        @ %d(p->sid).%0*d(fossil_num_digits(p->nEdit))(p->pEditPrev->rev)</a>
      }else{
        @ Originally by %s(zPosterName) \
        @ with edits by %s(zEditorName) on %h(zDate) from \
        @ %z(href("%R/forumpost/%S%s%s",p->pEditPrev->zUuid,zQuery,zHist))\
        @ %d(p->sid).%0*d(fossil_num_digits(p->nEdit))(p->pEditPrev->rev)</a>
      }
    }else{
      zPosterName = forum_post_display_name(p, pManifest);
      @ <h3 class='forumPostHdr'>(%d(p->sid))
      @ By %s(zPosterName) on %h(zDate)
    }
    fossil_free(zDate);


    /* If debugging is enabled, link to the artifact page. */
    if( g.perm.Debug ){
      @ <span class="debug">\
      @ <a href="%R/artifact/%h(p->zUuid)">(artifact-%d(p->fpid))</a></span>
    }

    /* If this is a reply, refer back to the parent post. */
    if( p->pIrt ){
      @ in reply to %z(href("%R/forumpost/%S%s",p->pIrt->zUuid,zQuery))\
      @ %d(p->pIrt->sid)\
      if( p->pIrt->nEdit ){
        @ .%0*d(fossil_num_digits(p->pIrt->nEdit))(p->pIrt->rev)\
      }
      @ </a>
    }

    /* If this post was later edited, refer forward to the next edit. */
    if( p->pEditNext ){
      @ updated by %z(href("%R/forumpost/%S%s",p->pEditNext->zUuid,zQuery))\
      @ %d(p->pEditNext->sid)\
      @ .%0*d(fossil_num_digits(p->nEdit))(p->pEditNext->rev)</a>
    }

    /* Provide a link to select the individual post. */
    if( !bSelect ){
      @ %z(href("%R/forumpost/%!S%s",p->zUuid,zQuery))[link]</a>
    }

    /* Provide a link to the raw source code. */
    if( !bUnf ){
      @ %z(href("%R/forumpost/%!S?raw",p->zUuid))[source]</a>
    }
    @ </h3>
  }

  /* Check if this post is approved, also if it's by the current user. */
  bPrivate = content_is_private(p->fpid);
  bSameUser = login_is_individual()
           && fossil_strcmp(pManifest->zUser, g.zLogin)==0;

  /* Render the post if the user is able to see it. */
  if( bPrivate && !g.perm.ModForum && !bSameUser ){
    @ <p><span class="modpending">Awaiting Moderator Approval</span></p>
  }else{
    if( bRaw || bUnf || p->pEditTail ){
      zMimetype = "text/plain";
    }else{
      zMimetype = pManifest->zMimetype;
    }
    forum_render(0, zMimetype, pManifest->zWiki, 0, !bRaw);
  }

  /* When not in raw mode, finish creating the border around the post. */
  if( !bRaw ){
    /* If the user is able to write to the forum and if this post has not been
    ** edited, create a form with various interaction buttons. */
    if( g.perm.WrForum && !p->pEditTail ){
      @ <div class="forumpost-single-controls">\
      @ <form action="%R/forumedit" method="POST">
      @ <input type="hidden" name="fpid" value="%s(p->zUuid)">
      if( !bPrivate ){
        /* Reply and Edit are only available if the post has been
        ** approved.  Closed threads can only be edited or replied to
        ** if forumpost_may_close() is true but a user may delete
        ** their own posts even if they are closed. */
        if( forumpost_may_close() || !iClosed ){
          @ <input type="submit" name="reply" value="Reply">
          if( g.perm.Admin || (bSameUser && !iClosed) ){
            @ <input type="submit" name="edit" value="Edit">
          }
          if( g.perm.Admin || bSameUser ){
            @ <input type="submit" name="nullout" value="Delete">
          }
        }
      }else if( g.perm.ModForum ){
        /* Allow moderators to approve or reject pending posts.  Also allow
        ** forum supervisors to mark non-special users as trusted and therefore
        ** able to post unmoderated. */
        @ <input type="submit" name="approve" value="Approve">
        @ <input type="submit" name="reject" value="Reject">
        if( g.perm.AdminForum && !login_is_special(pManifest->zUser) ){
          @ <br><label><input type="checkbox" name="trust">
          @ Trust user "%h(pManifest->zUser)" so that future posts by \
          @ "%h(pManifest->zUser)" do not require moderation.
          @ </label>
          @ <input type="hidden" name="trustuser" value="%h(pManifest->zUser)">
        }
      }else if( bSameUser ){
        /* Allow users to delete (reject) their own pending posts. */
        @ <input type="submit" name="reject" value="Delete">
      }
      login_insert_csrf_secret();
      @ </form>
      if( bSelect && forumpost_may_close() && iClosed>=0 ){
        int iHead = forumpost_head_rid(p->fpid);
        @ <form method="post" \
        @  action='%R/forumpost_%s(iClosed > 0 ? "reopen" : "close")'>
        login_insert_csrf_secret();
        @ <input type="hidden" name="fpid" value="%z(rid_to_uuid(iHead))" />
        if( moderation_pending(p->fpid)==0 ){
          @ <input type="submit" value='%s(iClosed ? "Re-open" : "Close")' />
        }
        @ </form>
      }
      @ </div>
    }
    @ </div>
  }

  /* Clean up. */
  manifest_destroy(pManifest);
}

/*
** Possible display modes for forum_display_thread().
*/
enum {
  FD_RAW,     /* Like FD_SINGLE, but additionally omit the border, force
              ** unformatted mode, and inhibit history mode */
  FD_SINGLE,  /* Render a single post and (optionally) its edit history */
  FD_CHRONO,  /* Render all posts in chronological order */
  FD_HIER,    /* Render all posts in an indented hierarchy */
};

/*
** Display a forum thread.  If mode is FD_RAW or FD_SINGLE, display only a
** single post from the thread and (optionally) its edit history.
*/
static void forum_display_thread(
  int froot,            /* Forum thread root post ID */
  int fpid,             /* Selected forum post ID, or 0 if none selected */
  int mode,             /* Forum display mode, one of the FD_* enumerations */
  int autoMode,         /* mode was selected automatically */
  int bUnf,             /* True if rendering unformatted */
  int bHist             /* True if showing edit history, ignored for FD_RAW */
){
  ForumThread *pThread; /* Thread structure */
  ForumPost *pSelect;   /* Currently selected post, or NULL if none */
  ForumPost *p;         /* Post iterator pointer */
  char zQuery[30];      /* Common query string */
  int iIndentScale = 4; /* Indent scale factor, measured in "ex" units */
  int sid;              /* Comparison serial ID */
  int i;

  /* In raw mode, force unformatted display and disable history. */
  if( mode == FD_RAW ){
    bUnf = 1;
    bHist = 0;
  }

  /* Thread together the posts and (optionally) compute the hierarchy. */
  pThread = forumthread_create(froot, mode==FD_HIER);

  /* Compute the appropriate indent scaling. */
  if( mode==FD_HIER ){
    iIndentScale = 4;
    while( iIndentScale>1 && iIndentScale*pThread->mxIndent>25 ){
      iIndentScale--;
    }
  }else{
    iIndentScale = 0;
  }

  /* Find the selected post, or (depending on parameters) its latest edit. */
  pSelect = fpid ? forumpost_forward(pThread->pFirst, fpid) : 0;
  if( !bHist && mode!=FD_RAW && pSelect && pSelect->pEditTail ){
    pSelect = pSelect->pEditTail;
  }

  /* When displaying only a single post, abort if no post was selected or the
  ** selected forum post does not exist in the thread.  Otherwise proceed to
  ** display the entire thread without marking any posts as selected. */
  if( !pSelect && (mode==FD_RAW || mode==FD_SINGLE) ){
    return;
  }

  /* Create the common query string to append to nearly all post links. */
  i = 0;
  if( !autoMode ){
    char m = 'a';
    switch( mode ){
      case FD_RAW:     m = 'r';  break;
      case FD_CHRONO:  m = 'c';  break;
      case FD_HIER:    m = 'h';  break;
      case FD_SINGLE:  m = 's';  break;
    }
    zQuery[i++] = '?';
    zQuery[i++] = 't';
    zQuery[i++] = '=';
    zQuery[i++] = m;
  }
  if( bUnf ){
    zQuery[i] =  i==0 ? '?' : '&'; i++;
    zQuery[i++] = 'u';
    zQuery[i++] = 'n';
    zQuery[i++] = 'f';
  }
  if( bHist ){
    zQuery[i] = i==0 ? '?' : '&'; i++;
    zQuery[i++] = 'h';
    zQuery[i++] = 'i';
    zQuery[i++] = 's';
    zQuery[i++] = 't';
  }
  assert( i<(int)sizeof(zQuery) );
  zQuery[i] = 0;
  assert( zQuery[0]==0 || zQuery[0]=='?' );

  /* Identify which post to display first.  If history is shown, start with the
  ** original, unedited post.  Otherwise advance to the post's latest edit.  */
  if( mode==FD_RAW || mode==FD_SINGLE ){
    p = pSelect;
    if( bHist && p->pEditHead ) p = p->pEditHead;
  }else{
    p = mode==FD_CHRONO ? pThread->pFirst : pThread->pDisplay;
    if( !bHist && p->pEditTail ) p = p->pEditTail;
  }

  /* Display the appropriate subset of posts in sequence. */
  while( p ){
    /* Display the post. */
    forum_display_post(p, iIndentScale, mode==FD_RAW,
        bUnf, bHist, p==pSelect, zQuery);

    /* Advance to the next post in the thread. */
    if( mode==FD_CHRONO ){
      /* Chronological mode: display posts (optionally including edits) in their
      ** original commit order. */
      if( bHist ){
        p = p->pNext;
      }else{
        sid = p->sid;
        if( p->pEditHead ) p = p->pEditHead;
        do p = p->pNext; while( p && p->sid<=sid );
        if( p && p->pEditTail ) p = p->pEditTail;
      }
    }else if( bHist && p->pEditNext ){
      /* Hierarchical and single mode: display each post's edits in sequence. */
      p = p->pEditNext;
    }else if( mode==FD_HIER ){
      /* Hierarchical mode: after displaying with each post (optionally
      ** including edits), go to the next post in computed display order. */
      p = p->pEditHead ? p->pEditHead->pDisplay : p->pDisplay;
      if( !bHist && p && p->pEditTail ) p = p->pEditTail;
    }else{
      /* Single and raw mode: terminate after displaying the selected post and
      ** (optionally) its edits. */
      break;
    }
  }

  /* Undocumented "threadtable" query parameter causes thread table to be
  ** displayed for debugging purposes. */
  if( PB("threadtable") ){
    @ <hr>
    @ <table border="1" cellpadding="3" cellspacing="0">
    @ <tr><th>sid<th>rev<th>fpid<th>pIrt<th>pEditHead<th>pEditTail\
    @ <th>pEditNext<th>pEditPrev<th>pDisplay<th>hash
    for(p=pThread->pFirst; p; p=p->pNext){
      @ <tr><td>%d(p->sid)<td>%d(p->rev)<td>%d(p->fpid)\
      @ <td>%d(p->pIrt ? p->pIrt->fpid : 0)\
      @ <td>%d(p->pEditHead ? p->pEditHead->fpid : 0)\
      @ <td>%d(p->pEditTail ? p->pEditTail->fpid : 0)\
      @ <td>%d(p->pEditNext ? p->pEditNext->fpid : 0)\
      @ <td>%d(p->pEditPrev ? p->pEditPrev->fpid : 0)\
      @ <td>%d(p->pDisplay ? p->pDisplay->fpid : 0)\
      @ <td>%S(p->zUuid)</tr>
    }
    @ </table>
  }

  /* Clean up. */
  forumthread_delete(pThread);
}

/*
** Emit Forum Javascript which applies (or optionally can apply)
** to all forum-related pages. It does not include page-specific
** code (e.g. "forum.js").
*/
static void forum_emit_js(void){
  builtin_fossil_js_bundle_or("copybutton", "pikchr", NULL);
  builtin_request_js("fossil.page.forumpost.js");
}

/*
** WEBPAGE: forumpost
**
** Show a single forum posting. The posting is shown in context with
** its entire thread.  The selected posting is enclosed within
** <div class='forumSel'>...</div>.  Javascript is used to move the
** selected posting into view after the page loads.
**
** Query parameters:
**
**   name=X        REQUIRED.  The hash of the post to display.
**   t=a           Automatic display mode, i.e. hierarchical for
**                 desktop and chronological for mobile.  This is the
**                 default if the "t" query parameter is omitted.
**   t=c           Show posts in the order they were written.
**   t=h           Show posts using hierarchical indenting.
**   t=s           Show only the post specified by "name=X".
**   t=r           Alias for "t=c&unf&hist".
**   t=y           Alias for "t=s&unf&hist".
**   raw           Alias for "t=s&unf".  Additionally, omit the border
**                 around the post, and ignore "t" and "hist".
**   unf           Show the original, unformatted source text.
**   hist          Show edit history in addition to current posts.
*/
void forumpost_page(void){
  forumthread_page();
}

/*
** WEBPAGE: forumthread
**
** Show all forum messages associated with a particular message thread.
** The result is basically the same as /forumpost except that none of
** the postings in the thread are selected.
**
** Query parameters:
**
**   name=X        REQUIRED.  The hash of any post of the thread.
**   t=a           Automatic display mode, i.e. hierarchical for
**                 desktop and chronological for mobile.  This is the
**                 default if the "t" query parameter is omitted.
**   t=c           Show posts in the order they were written.
**   t=h           Show posts using hierarchical indenting.
**   unf           Show the original, unformatted source text.
**   hist          Show edit history in addition to current posts.
*/
void forumthread_page(void){
  int fpid;
  int froot;
  char *zThreadTitle;
  const char *zName = P("name");
  const char *zMode = PD("t","a");
  int bRaw = PB("raw");
  int bUnf = PB("unf");
  int bHist = PB("hist");
  int mode = 0;
  int autoMode = 0;
  login_check_credentials();
  if( !g.perm.RdForum ){
    login_needed(g.anon.RdForum);
    return;
  }
  if( zName==0 ){
    webpage_error("Missing \"name=\" query parameter");
  }
  cgi_check_for_malice();
  fpid = symbolic_name_to_rid(zName, "f");
  if( fpid<=0 ){
    if( fpid==0 ){
      webpage_notfound_error("Unknown forum id: \"%s\"", zName);
    }else{
      ambiguous_page();
    }
    return;
  }
  froot = db_int(0, "SELECT froot FROM forumpost WHERE fpid=%d", fpid);
  if( froot==0 ){
    webpage_notfound_error("Not a forum post: \"%s\"", zName);
  }

  /* Decode the mode parameters. */
  if( bRaw ){
    mode = FD_RAW;
    bUnf = 1;
    bHist = 0;
    cgi_replace_query_parameter("unf", "on");
    cgi_delete_query_parameter("hist");
    cgi_delete_query_parameter("raw");
  }else{
    switch( *zMode ){
      case 'a': mode = cgi_from_mobile() ? FD_CHRONO : FD_HIER;
                autoMode=1; break;
      case 'c': mode = FD_CHRONO; break;
      case 'h': mode = FD_HIER; break;
      case 's': mode = FD_SINGLE; break;
      case 'r': mode = FD_CHRONO; break;
      case 'y': mode = FD_SINGLE; break;
      default: webpage_error("Invalid thread mode: \"%s\"", zMode);
    }
    if( *zMode=='r' || *zMode=='y') {
      bUnf = 1;
      bHist = 1;
      cgi_replace_query_parameter("t", mode==FD_CHRONO ? "c" : "s");
      cgi_replace_query_parameter("unf", "on");
      cgi_replace_query_parameter("hist", "on");
    }
  }

  /* Define the page header. */
  zThreadTitle = db_text("",
    "SELECT"
    " substr(event.comment,instr(event.comment,':')+2)"
    " FROM forumpost, event"
    " WHERE event.objid=forumpost.fpid"
    "   AND forumpost.fpid=%d;",
    fpid
  );
  style_set_current_feature("forum");
  style_header("%s%s", zThreadTitle, *zThreadTitle ? "" : "Forum");
  fossil_free(zThreadTitle);
  if( mode!=FD_CHRONO ){
    style_submenu_element("Chronological", "%R/%s/%s?t=c%s%s", g.zPath, zName,
        bUnf ? "&unf" : "", bHist ? "&hist" : "");
  }
  if( mode!=FD_HIER ){
    style_submenu_element("Hierarchical", "%R/%s/%s?t=h%s%s", g.zPath, zName,
        bUnf ? "&unf" : "", bHist ? "&hist" : "");
  }
  style_submenu_checkbox("unf", "Unformatted", 0, 0);
  style_submenu_checkbox("hist", "History", 0, 0);
  if( g.perm.Admin ){
    style_submenu_element("Artifacts", "%R/forumthreadhashlist/%t", zName);
  }

  /* Display the thread. */
  if( fossil_strcmp(g.zPath,"forumthread")==0 ) fpid = 0;
  forum_display_thread(froot, fpid, mode, autoMode, bUnf, bHist);

  /* Emit Forum Javascript. */
  builtin_request_js("forum.js");
  forum_emit_js();

  /* Emit the page style. */
  style_finish_page();
}

/*
** Return true if a forum post should be moderated.
*/
static int forum_need_moderation(void){
  if( P("domod") ) return 1;
  if( g.perm.WrTForum ) return 0;
  if( g.perm.ModForum ) return 0;
  return 1;
}

/*
** Return true if the string is white-space only.
*/
static int whitespace_only(const char *z){
  if( z==0 ) return 1;
  while( z[0] && fossil_isspace(z[0]) ){ z++; }
  return z[0]==0;
}

/* Flags for use with forum_post() */
#define FPOST_NO_ALERT 1 /* do not send any alerts */

/*
** Return a flags value for use with the final argument to
** forum_post(), extracted from the CGI environment.
*/
static int forum_post_flags(void){
  int iPostFlags = 0;
  if( g.perm.Debug && P("fpsilent")!=0 ){
    iPostFlags |= FPOST_NO_ALERT;
  }
  return iPostFlags;
}

/*
** Add a new Forum Post artifact to the repository.
**
** Return true if a redirect occurs.
*/
static int forum_post(
  const char *zTitle,          /* Title.  NULL for replies */
  int iInReplyTo,              /* Post replying to.  0 for new threads */
  int iEdit,                   /* Post being edited, or zero for a new post */
  const char *zUser,           /* Username.  NULL means use login name */
  const char *zMimetype,       /* Mimetype of content. */
  const char *zContent,        /* Content */
  int iFlags                   /* FPOST_xyz flag values */
){
  char *zDate;
  char *zI;
  char *zG;
  int iBasis;
  Blob x, cksum, formatCheck, errMsg;
  Manifest *pPost;
  int nContent = zContent ? (int)strlen(zContent) : 0;

  schema_forum();
  if( !g.perm.Admin && (iEdit || iInReplyTo)
      && forum_rid_is_closed(iEdit ? iEdit : iInReplyTo, 1) ){
    forumpost_error_closed();
    return 0;
  }
  if( iEdit==0 && whitespace_only(zContent) ){
    return 0;
  }
  if( iInReplyTo==0 && iEdit>0 ){
    iBasis = iEdit;
    iInReplyTo = db_int(0, "SELECT firt FROM forumpost WHERE fpid=%d", iEdit);
  }else{
    iBasis = iInReplyTo;
  }
  webpage_assert( (zTitle==0)+(iInReplyTo==0)==1 );
  blob_init(&x, 0, 0);
  zDate = date_in_standard_format("now");
  blob_appendf(&x, "D %s\n", zDate);
  fossil_free(zDate);
  zG = db_text(0,
     "SELECT uuid FROM blob, forumpost"
     " WHERE blob.rid==forumpost.froot"
     "   AND forumpost.fpid=%d", iBasis);
  if( zG ){
    blob_appendf(&x, "G %s\n", zG);
    fossil_free(zG);
  }
  if( zTitle ){
    blob_appendf(&x, "H %F\n", zTitle);
  }
  zI = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", iInReplyTo);
  if( zI ){
    blob_appendf(&x, "I %s\n", zI);
    fossil_free(zI);
  }
  if( fossil_strcmp(zMimetype,"text/x-fossil-wiki")!=0 ){
    blob_appendf(&x, "N %s\n", zMimetype);
  }
  if( iEdit>0 ){
    char *zP = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", iEdit);
    if( zP==0 ) webpage_error("missing edit artifact %d", iEdit);
    blob_appendf(&x, "P %s\n", zP);
    fossil_free(zP);
  }
  if( zUser==0 ){
    if( login_is_nobody() ){
      zUser = "anonymous";
    }else{
      zUser = login_name();
    }
  }
  blob_appendf(&x, "U %F\n", zUser);
  blob_appendf(&x, "W %d\n%s\n", nContent, zContent);
  md5sum_blob(&x, &cksum);
  blob_appendf(&x, "Z %b\n", &cksum);
  blob_reset(&cksum);

  /* Verify that the artifact we are creating is well-formed */
  blob_init(&formatCheck, 0, 0);
  blob_init(&errMsg, 0, 0);
  blob_copy(&formatCheck, &x);
  pPost = manifest_parse(&formatCheck, 0, &errMsg);
  if( pPost==0 ){
    webpage_error("malformed forum post artifact - %s", blob_str(&errMsg));
  }
  webpage_assert( pPost->type==CFTYPE_FORUM );
  manifest_destroy(pPost);

  if( P("dryrun") ){
    @ <div class='debug'>
    @ This is the artifact that would have been generated:
    @ <pre>%h(blob_str(&x))</pre>
    @ </div>
    blob_reset(&x);
    return 0;
  }else{
    int nrid;
    db_begin_transaction();
    nrid = wiki_put(&x, iEdit>0 ? iEdit : 0, forum_need_moderation());
    blob_reset(&x);
    if( (iFlags & FPOST_NO_ALERT)!=0 ){
      alert_unqueue('f', nrid);
    }
    db_commit_transaction();
    cgi_redirectf("%R/forumpost/%S", rid_to_uuid(nrid));
    return 1;
  }
}

/*
** Paint the form elements for entering a Forum post
*/
static void forum_post_widget(
  const char *zTitle,
  const char *zMimetype,
  const char *zContent
){
  if( zTitle ){
    @ Title: <input type="input" name="title" value="%h(zTitle)" size="50"
    @ maxlength="125"><br>
  }
  @ %z(href("%R/markup_help"))Markup style</a>:
  mimetype_option_menu(zMimetype, "mimetype");
  @ <div class="forum-editor-widget">
  @ <textarea aria-label="Content:" name="content" class="wikiedit" \
  @ cols="80" rows="25" wrap="virtual">%h(zContent)</textarea></div>
}

/*
** WEBPAGE: forumpost_close hidden
** WEBPAGE: forumpost_reopen hidden
**
**   fpid=X        Hash of the post to be edited.  REQUIRED
**   reason=X      Optional reason for closure.
**
** Closes or re-opens the given forum post, within the bounds of the
** API for forumpost_close(). After (perhaps) modifying the "closed"
** status of the given thread, it redirects to that post's thread
** view. Requires admin privileges.
*/
void forum_page_close(void){
  const char *zFpid = PD("fpid","");
  const char *zReason = 0;
  int fClose;
  int fpid;

  login_check_credentials();
  if( forumpost_may_close()==0 ){
    login_needed(g.anon.Admin);
    return;
  }
  cgi_csrf_verify();
  fpid = symbolic_name_to_rid(zFpid, "f");
  if( fpid<=0 ){
    webpage_error("Missing or invalid fpid query parameter");
  }
  fClose = sqlite3_strglob("*_close*", g.zPath)==0;
  if( fClose ) zReason = PD("reason",0);
  forumpost_close(fpid, fClose, zReason);
  cgi_redirectf("%R/forumpost/%S",zFpid);
  return;
}

/*
** WEBPAGE: forumnew
** WEBPAGE: forumedit
**
** Start a new thread on the forum or reply to an existing thread.
** But first prompt to see if the user would like to log in.
*/
void forum_page_init(void){
  int isEdit;
  char *zGoto;

  login_check_credentials();
  if( !g.perm.WrForum ){
    login_needed(g.anon.WrForum);
    return;
  }
  if( sqlite3_strglob("*edit*", g.zPath)==0 ){
    zGoto = mprintf("forume2?fpid=%S",PD("fpid",""));
    isEdit = 1;
  }else{
    zGoto = mprintf("forume1");
    isEdit = 0;
  }
  if( login_is_individual() ){
    if( isEdit ){
      forumedit_page();
    }else{
      forumnew_page();
    }
    return;
  }
  style_set_current_feature("forum");
  style_header("%h As Anonymous?", isEdit ? "Reply" : "Post");
  @ <p>You are not logged in.
  @ <p><table border="0" cellpadding="10">
  @ <tr><td>
  @ <form action="%s(zGoto)" method="POST">
  @ <input type="submit" value="Remain Anonymous">
  @ </form>
  @ <td>Post to the forum anonymously
  if( login_self_register_available(0) ){
    @ <tr><td>
    @ <form action="%R/register" method="POST">
    @ <input type="hidden" name="g" value="%s(zGoto)">
    @ <input type="submit" value="Create An Account">
    @ </form>
    @ <td>Create a new account and post using that new account
  }
  @ <tr><td>
  @ <form action="%R/login" method="POST">
  @ <input type="hidden" name="g" value="%s(zGoto)">
  @ <input type="hidden" name="noanon" value="1">
  @ <input type="submit" value="Login">
  @ </form>
  @ <td>Log into an existing account
  @ </table>
  forum_emit_js();
  style_finish_page();
  fossil_free(zGoto);
}

/*
** Write the "From: USER" line on the webpage.
*/
static void forum_from_line(void){
  if( login_is_nobody() ){
    @ From: anonymous<br>
  }else{
    @ From: %h(login_name())<br>
  }
}

static void forum_render_debug_options(void){
  if( g.perm.Debug ){
    /* Give extra control over the post to users with the special
     * Debug capability, which includes Admin and Setup users */
    @ <div class="debug">
    @ <label><input type="checkbox" name="dryrun" %s(PCK("dryrun"))> \
    @ Dry run</label>
    @ <br><label><input type="checkbox" name="domod" %s(PCK("domod"))> \
    @ Require moderator approval</label>
    @ <br><label><input type="checkbox" name="showqp" %s(PCK("showqp"))> \
    @ Show query parameters</label>
    @ <br><label><input type="checkbox" name="fpsilent" %s(PCK("fpsilent"))> \
    @ Do not send notification emails</label>
    @ </div>
  }
}

/*
** WEBPAGE: forume1
**
** Start a new forum thread.
*/
void forumnew_page(void){
  const char *zTitle = PDT("title","");
  const char *zMimetype = PD("mimetype",DEFAULT_FORUM_MIMETYPE);
  const char *zContent = PDT("content","");

  login_check_credentials();
  if( !g.perm.WrForum ){
    login_needed(g.anon.WrForum);
    return;
  }
  if( P("submit") && cgi_csrf_safe(2) ){
    if( forum_post(zTitle, 0, 0, 0, zMimetype, zContent,
                   forum_post_flags()) ) return;
  }
  if( P("preview") && !whitespace_only(zContent) ){
    @ <h1>Preview:</h1>
    forum_render(zTitle, zMimetype, zContent, "forumEdit", 1);
  }
  style_set_current_feature("forum");
  style_header("New Forum Thread");
  @ <form action="%R/forume1" method="POST">
  @ <h1>New Thread:</h1>
  forum_from_line();
  forum_post_widget(zTitle, zMimetype, zContent);
  @ <input type="submit" name="preview" value="Preview">
  if( P("preview") && !whitespace_only(zContent) ){
    @ <input type="submit" name="submit" value="Submit">
  }else{
    @ <input type="submit" name="submit" value="Submit" disabled>
  }
  forum_render_debug_options();
  login_insert_csrf_secret();
  @ </form>
  forum_emit_js();
  style_finish_page();
}

/*
** WEBPAGE: forume2
**
** Edit an existing forum message.
** Query parameters:
**
**   fpid=X        Hash of the post to be edited.  REQUIRED
*/
void forumedit_page(void){
  int fpid;
  int froot;
  Manifest *pPost = 0;
  Manifest *pRootPost = 0;
  const char *zMimetype = 0;
  const char *zContent = 0;
  const char *zTitle = 0;
  char *zDate = 0;
  const char *zFpid = PD("fpid","");
  int isCsrfSafe;
  int isDelete = 0;
  int iClosed = 0;
  int bSameUser;        /* True if author is also the reader */
  int bPreview;         /* True in preview mode. */
  int bPrivate;         /* True if post is private (not yet moderated) */
  int bReply;           /* True if replying to a post */

  login_check_credentials();
  if( !g.perm.WrForum ){
    login_needed(g.anon.WrForum);
    return;
  }
  fpid = symbolic_name_to_rid(zFpid, "f");
  if( fpid<=0 || (pPost = manifest_get(fpid, CFTYPE_FORUM, 0))==0 ){
    webpage_error("Missing or invalid fpid query parameter");
  }
  froot = db_int(0, "SELECT froot FROM forumpost WHERE fpid=%d", fpid);
  if( froot==0 || (pRootPost = manifest_get(froot, CFTYPE_FORUM, 0))==0 ){
    webpage_error("fpid does not appear to be a forum post: \"%d\"", fpid);
  }
  if( P("cancel") ){
    cgi_redirectf("%R/forumpost/%S",zFpid);
    return;
  }
  bPreview = P("preview")!=0;
  bReply = P("reply")!=0;
  iClosed = forum_rid_is_closed(fpid, 1);
  isCsrfSafe = cgi_csrf_safe(2);
  bPrivate = content_is_private(fpid);
  bSameUser = login_is_individual()
    && fossil_strcmp(pPost->zUser, g.zLogin)==0;
  if( isCsrfSafe && (g.perm.ModForum || (bPrivate && bSameUser)) ){
    if( g.perm.ModForum && P("approve") ){
      const char *zUserToTrust;
      moderation_approve('f', fpid);
      if( g.perm.AdminForum
       && PB("trust")
       && (zUserToTrust = P("trustuser"))!=0
      ){
        db_unprotect(PROTECT_USER);
        db_multi_exec("UPDATE user SET cap=cap||'4' "
                      "WHERE login=%Q AND cap NOT GLOB '*4*'",
                      zUserToTrust);
        db_protect_pop();
      }
      cgi_redirectf("%R/forumpost/%S",P("fpid"));
      return;
    }
    if( P("reject") ){
      char *zParent =
        db_text(0,
          "SELECT uuid FROM forumpost, blob"
          " WHERE forumpost.fpid=%d AND blob.rid=forumpost.firt",
          fpid
        );
      moderation_disapprove(fpid);
      if( zParent ){
        cgi_redirectf("%R/forumpost/%S",zParent);
      }else{
        cgi_redirectf("%R/forum");
      }
      return;
    }
  }
  style_set_current_feature("forum");
  isDelete = P("nullout")!=0;
  if( P("submit")
   && isCsrfSafe
   && (zContent = PDT("content",""))!=0
   && (!whitespace_only(zContent) || isDelete)
  ){
    int done = 1;
    const char *zMimetype = PD("mimetype",DEFAULT_FORUM_MIMETYPE);
    if( bReply ){
      done = forum_post(0, fpid, 0, 0, zMimetype, zContent,
                        forum_post_flags());
    }else if( P("edit") || isDelete ){
      done = forum_post(P("title"), 0, fpid, 0, zMimetype, zContent,
                        forum_post_flags());
    }else{
      webpage_error("Missing 'reply' query parameter");
    }
    if( done ) return;
  }
  if( isDelete ){
    zMimetype = "text/x-fossil-wiki";
    zContent = "";
    if( pPost->zThreadTitle ) zTitle = "";
    style_header("Delete %s", zTitle ? "Post" : "Reply");
    @ <h1>Original Post:</h1>
    forum_render(pPost->zThreadTitle, pPost->zMimetype, pPost->zWiki,
                 "forumEdit", 1);
    @ <h1>Change Into:</h1>
    forum_render(zTitle, zMimetype, zContent,"forumEdit", 1);
    @ <form action="%R/forume2" method="POST">
    login_insert_csrf_secret();
    @ <input type="hidden" name="fpid" value="%h(P("fpid"))">
    @ <input type="hidden" name="nullout" value="1">
    @ <input type="hidden" name="mimetype" value="%h(zMimetype)">
    @ <input type="hidden" name="content" value="%h(zContent)">
    if( zTitle ){
      @ <input aria-label="Title" type="hidden" name="title" value="%h(zTitle)">
    }
  }else if( P("edit") ){
    /* Provide an edit to the fpid post */
    zMimetype = P("mimetype");
    zContent = PT("content");
    zTitle = P("title");
    if( zContent==0 ) zContent = fossil_strdup(pPost->zWiki);
    if( zMimetype==0 ) zMimetype = fossil_strdup(pPost->zMimetype);
    if( zTitle==0 && pPost->zThreadTitle!=0 ){
      zTitle = fossil_strdup(pPost->zThreadTitle);
    }
    style_header("Edit %s", zTitle ? "Post" : "Reply");
    @ <h2>Original Post:</h2>
    forum_render(pPost->zThreadTitle, pPost->zMimetype, pPost->zWiki,
                 "forumEdit", 1);
    if( bPreview ){
      @ <h2>Preview of Edited Post:</h2>
      forum_render(zTitle, zMimetype, zContent,"forumEdit", 1);
    }
    @ <h2>Revised Message:</h2>
    @ <form action="%R/forume2" method="POST">
    login_insert_csrf_secret();
    @ <input type="hidden" name="fpid" value="%h(P("fpid"))">
    @ <input type="hidden" name="edit" value="1">
    forum_from_line();
    forum_post_widget(zTitle, zMimetype, zContent);
  }else{
    /* Reply */
    char *zDisplayName;
    zMimetype = PD("mimetype",DEFAULT_FORUM_MIMETYPE);
    zContent = PDT("content","");
    style_header("Reply");
    @ <h2>Replying to
    @ <a href="%R/forumpost/%!S(zFpid)" target="_blank">%S(zFpid)</a>
    if( pRootPost->zThreadTitle ){
      @ in thread
      @ <span class="forumPostReplyTitle">%h(pRootPost->zThreadTitle)</span>
    }
    @ </h2>
    zDate = db_text(0, "SELECT datetime(%.17g,toLocal())", pPost->rDate);
    zDisplayName = display_name_from_login(pPost->zUser);
    @ <h3 class='forumPostHdr'>By %s(zDisplayName) on %h(zDate)</h3>
    fossil_free(zDisplayName);
    fossil_free(zDate);
    forum_render(0, pPost->zMimetype, pPost->zWiki, "forumEdit", 1);
    if( bPreview && !whitespace_only(zContent) ){
      @ <h2>Preview:</h2>
      forum_render(0, zMimetype,zContent, "forumEdit", 1);
    }
    @ <h2>Enter Reply:</h2>
    @ <form action="%R/forume2" method="POST">
    @ <input type="hidden" name="fpid" value="%h(P("fpid"))">
    @ <input type="hidden" name="reply" value="1">
    forum_from_line();
    forum_post_widget(0, zMimetype, zContent);
  }
  if( !isDelete ){
    @ <input type="submit" name="preview" value="Preview">
  }
  @ <input type="submit" name="cancel" value="Cancel">
  if( (bPreview && !whitespace_only(zContent)) || isDelete ){
    if( !iClosed || g.perm.Admin ) {
      @ <input type="submit" name="submit" value="Submit">
    }
  }
  forum_render_debug_options();
  login_insert_csrf_secret();
  @ </form>
  forum_emit_js();
  style_finish_page();
}

/*
** WEBPAGE: setup_forum
**
** Forum configuration and metrics.
*/
void forum_setup(void){
  /* boolean config settings specific to the forum. */
  const char * zSettingsBool[] = {
  "forum-close-policy",
  NULL /* sentinel entry */
  };

  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(g.anon.Setup);
    return;
  }
  style_set_current_feature("forum");
  style_header("Forum Setup");

  @ <h2>Metrics</h2>
  {
    int nPosts = db_int(0, "SELECT COUNT(*) FROM event WHERE type='f'");
    @ <p><a href='%R/forum'>Forum posts</a>:
    @ <a href='%R/timeline?y=f'>%d(nPosts)</a></p>
  }

  @ <h2>Supervisors</h2>
  @ <p>Users with capabilities 's', 'a', or '6'.</p>
  {
    Stmt q = empty_Stmt;
    int nRows = 0;
    db_prepare(&q, "SELECT uid, login, cap FROM user "
                   "WHERE cap GLOB '*[as6]*' ORDER BY login");
    @ <table class='bordered'>
    @ <thead><tr><th>User</th><th>Capabilities</th></tr></thead>
    @ <tbody>
    while( SQLITE_ROW==db_step(&q) ){
      const int iUid = db_column_int(&q, 0);
      const char *zUser = db_column_text(&q, 1);
      const char *zCap = db_column_text(&q, 2);
      ++nRows;
      @ <tr>
      @ <td><a href='%R/setup_uedit?id=%d(iUid)'>%h(zUser)</a></td>
      @ <td>(%h(zCap))</td>
      @ </tr>
    }
    db_finalize(&q);
    @</tbody></table>
    if( 0==nRows ){
      @ No supervisors
    }else{
      @ %d(nRows) supervisor(s)
    }
  }

  @ <h2>Moderators</h2>
  @ <p>Users with capability '5'.</p>
  {
    Stmt q = empty_Stmt;
    int nRows = 0;
    db_prepare(&q, "SELECT uid, login, cap FROM user "
               "WHERE cap GLOB '*5*' ORDER BY login");
    @ <table class='bordered'>
    @ <thead><tr><th>User</th><th>Capabilities</th></tr></thead>
    @ <tbody>
    while( SQLITE_ROW==db_step(&q) ){
      const int iUid = db_column_int(&q, 0);
      const char *zUser = db_column_text(&q, 1);
      const char *zCap = db_column_text(&q, 2);
      ++nRows;
      @ <tr>
      @ <td><a href='%R/setup_uedit?id=%d(iUid)'>%h(zUser)</a></td>
      @ <td>(%h(zCap))</td>
      @ </tr>
    }
    db_finalize(&q);
    @ </tbody></table>
    if( 0==nRows ){
      @ No non-supervisor moderators
    }else{
      @ %d(nRows) moderator(s)
    }
  }

  @ <h2>Settings</h2>
  @ <p>Configuration settings specific to the forum.</p>
  if( P("submit") && cgi_csrf_safe(2) ){
    int i = 0;
    const char *zSetting;
    db_begin_transaction();
    while( (zSetting = zSettingsBool[i++]) ){
      const char *z = P(zSetting);
      if( !z || !z[0] ) z = "off";
      db_set(zSetting/*works-like:"x"*/, z, 0);
    }
    db_end_transaction(0);
    @ <p><em>Settings saved.</em></p>
  }
  {
    int i = 0;
    const char *zSetting;
    @ <form action="%R/setup_forum" method="post">
    login_insert_csrf_secret();
    @ <table class='forum-settings-list'><tbody>
    while( (zSetting = zSettingsBool[i++]) ){
      @ <tr><td>
      onoff_attribute("", zSetting, zSetting/*works-like:"x"*/, 0, 0);
      @ </td><td>
      @ <a href='%R/help?cmd=%h(zSetting)'>%h(zSetting)</a>
      @ </td></tr>
    }
    @ </tbody></table>
    @ <input type='submit' name='submit' value='Apply changes'>
    @ </form>
  }

  style_finish_page();
}

/*
** WEBPAGE: forummain
** WEBPAGE: forum
**
** The main page for the forum feature.  Show a list of recent forum
** threads.  Also show a search box at the top if search is enabled,
** and a button for creating a new thread, if enabled.
**
** Query parameters:
**
**    n=N             The number of threads to show on each page
**    x=X             Skip the first X threads
**    s=Y             Search for term Y.
*/
void forum_main_page(void){
  Stmt q;
  int iLimit = 0, iOfst, iCnt;
  int srchFlags;
  const int isSearch = P("s")!=0;
  char const *zLimit = 0;

  login_check_credentials();
  srchFlags = search_restrict(SRCH_FORUM);
  if( !g.perm.RdForum ){
    login_needed(g.anon.RdForum);
    return;
  }
  cgi_check_for_malice();
  style_set_current_feature("forum");
  style_header( "%s", isSearch ? "Forum Search Results" : "Forum" );
  style_submenu_element("Timeline", "%R/timeline?ss=v&y=f&vfx");
  if( g.perm.WrForum ){
    style_submenu_element("New Thread","%R/forumnew");
  }else{
    /* Can't combine this with previous case using the ternary operator
     * because that causes an error yelling about "non-constant format"
     * with some compilers.  I can't see it, since both expressions have
     * the same format, but I'm no C spec lawyer. */
    style_submenu_element("New Thread","%R/login");
  }
  if( g.perm.ModForum && moderation_needed() ){
    style_submenu_element("Moderation Requests", "%R/modreq");
  }
  if( (srchFlags & SRCH_FORUM)!=0 ){
    if( search_screen(SRCH_FORUM, 0) ){
      style_submenu_element("Recent Threads","%R/forum");
      style_finish_page();
      return;
    }
  }
  cookie_read_parameter("n","forum-n");
  zLimit = P("n");
  if( zLimit!=0 ){
    iLimit = atoi(zLimit);
    if( iLimit>=0 && P("udc")!=0 ){
      cookie_write_parameter("n","forum-n",0);
    }
  }
  if( iLimit<=0 ){
    cgi_replace_query_parameter("n", fossil_strdup("25"))
      /*for the sake of Max, below*/;
    iLimit = 25;
  }
  style_submenu_entry("n","Max:",4,0);
  iOfst = atoi(PD("x","0"));
  iCnt = 0;
  if( db_table_exists("repository","forumpost") ){
    db_prepare(&q,
      "WITH thread(age,duration,cnt,root,last) AS ("
      "  SELECT"
      "    julianday('now') - max(fmtime),"
      "    max(fmtime) - min(fmtime),"
      "    sum(fprev IS NULL),"
      "    froot,"
      "    (SELECT fpid FROM forumpost AS y"
      "      WHERE y.froot=x.froot %s"
      "      ORDER BY y.fmtime DESC LIMIT 1)"
      "  FROM forumpost AS x"
      "  WHERE %s"
      "  GROUP BY froot"
      "  ORDER BY 1 LIMIT %d OFFSET %d"
      ")"
      "SELECT"
      "  thread.age,"                                         /* 0 */
      "  thread.duration,"                                    /* 1 */
      "  thread.cnt,"                                         /* 2 */
      "  blob.uuid,"                                          /* 3 */
      "  substr(event.comment,instr(event.comment,':')+1),"   /* 4 */
      "  thread.last"                                         /* 5 */
      " FROM thread, blob, event"
      " WHERE blob.rid=thread.last"
      "  AND event.objid=thread.last"
      " ORDER BY 1;",
      g.perm.ModForum ? "" : "AND y.fpid NOT IN private" /*safe-for-%s*/,
      g.perm.ModForum ? "true" : "fpid NOT IN private" /*safe-for-%s*/,
      iLimit+1, iOfst
    );
    while( db_step(&q)==SQLITE_ROW ){
      char *zAge = human_readable_age(db_column_double(&q,0));
      int nMsg = db_column_int(&q, 2);
      const char *zUuid = db_column_text(&q, 3);
      const char *zTitle = db_column_text(&q, 4);
      if( iCnt==0 ){
        if( iOfst>0 ){
          @ <h1>Threads at least %s(zAge) old</h1>
        }else{
          @ <h1>Most recent threads</h1>
        }
        @ <div class='forumPosts fileage'><table width="100%%">
        if( iOfst>0 ){
          if( iOfst>iLimit ){
            @ <tr><td colspan="3">\
            @ %z(href("%R/forum?x=%d&n=%d",iOfst-iLimit,iLimit))\
            @ &uarr; Newer...</a></td></tr>
          }else{
            @ <tr><td colspan="3">%z(href("%R/forum?n=%d",iLimit))\
            @ &uarr; Newer...</a></td></tr>
          }
        }
      }
      iCnt++;
      if( iCnt>iLimit ){
        @ <tr><td colspan="3">\
        @ %z(href("%R/forum?x=%d&n=%d",iOfst+iLimit,iLimit))\
        @ &darr; Older...</a></td></tr>
        fossil_free(zAge);
        break;
      }
      @ <tr><td>%h(zAge) ago</td>
      @ <td>%z(href("%R/forumpost/%S",zUuid))%h(zTitle)</a></td>
      @ <td>\
      if( g.perm.ModForum && moderation_pending(db_column_int(&q,5)) ){
        @ <span class="modpending">\
        @ Awaiting Moderator Approval</span><br>
      }
      if( nMsg<2 ){
        @ no replies</td>
      }else{
        char *zDuration = human_readable_age(db_column_double(&q,1));
        @ %d(nMsg) posts spanning %h(zDuration)</td>
        fossil_free(zDuration);
      }
      @ </tr>
      fossil_free(zAge);
    }
    db_finalize(&q);
  }
  if( iCnt>0 ){
    @ </table></div>
  }else{
    @ <h1>No forum posts found</h1>
  }
  style_finish_page();
}
Added src/forum.js.



















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(function(){
  function absoluteY(obj){
    var top = 0;
    if( obj.offsetParent ){
      do{
        top += obj.offsetTop;
      }while( obj = obj.offsetParent );
    }
    return top;
  }
  var x = document.getElementsByClassName('forumSel');
  if(x[0]){
    var w = window.innerHeight;
    var h = x[0].scrollHeight;
    var y = absoluteY(x[0]);
    if( w>h ) y = y + (h-w)/2;
    if( y>0 ) window.scrollTo(0, y);
  }
})();
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"use strict";
(function () {
  /* CustomEvent polyfill, courtesy of Mozilla:
     https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent/CustomEvent
  */
  if(typeof window.CustomEvent === "function") return false;
  window.CustomEvent = function(event, params) {
    if(!params) params = {bubbles: false, cancelable: false, detail: null};
    const evt = document.createEvent('CustomEvent');
    evt.initCustomEvent( event, !!params.bubbles, !!params.cancelable, params.detail );
    return evt;
  };
})();
(function(global){
  /* Bootstrapping bits for the global.fossil object. Must be loaded
     after style.c:builtin_emit_script_fossil_bootstrap() has
     initialized that object.
  */

  const F = global.fossil;

  /**
     Returns the current time in something approximating
     ISO-8601 format.
  */
  const timestring = function f(){
    if(!f.rx1){
      f.rx1 = /\.\d+Z$/;
    }
    const d = new Date();
    return d.toISOString().replace(f.rx1,'').split('T').join(' ');
  };

  /** Returns the local time string of Date object d, defaulting
      to the current time. */
  const localTimeString = function ff(d){
    if(!ff.pad){
      ff.pad = (x)=>(''+x).length>1 ? x : '0'+x;
    }
    d || (d = new Date());
    return [
      d.getFullYear(),'-',ff.pad(d.getMonth()+1/*sigh*/),
      '-',ff.pad(d.getDate()),
      ' ',ff.pad(d.getHours()),':',ff.pad(d.getMinutes()),
      ':',ff.pad(d.getSeconds())
    ].join('');
  };

  /*
  ** By default fossil.message() sends its arguments console.debug(). If
  ** fossil.message.targetElement is set, it is assumed to be a DOM
  ** element, its innerText gets assigned to the concatenation of all
  ** arguments (with a space between each), and the CSS 'error' class is
  ** removed from the object. Pass it a falsy value to clear the target
  ** element.
  **
  ** Returns this object.
  */
  F.message = function f(msg){
    const args = Array.prototype.slice.call(arguments,0);
    const tgt = f.targetElement;
    if(args.length) args.unshift(
      localTimeString()+':'
      //timestring(),'UTC:'
    );
    if(tgt){
      tgt.classList.remove('error');
      tgt.innerText = args.join(' ');
    }
    else{
      if(args.length){
        args.unshift('Fossil status:');
        console.debug.apply(console,args);
      }
    }
    return this;
  };
  /*
  ** Set default message.targetElement to #fossil-status-bar, if found.
  */
  F.message.targetElement =
    document.querySelector('#fossil-status-bar');
  if(F.message.targetElement){
    F.message.targetElement.addEventListener(
      'dblclick', ()=>F.message(), false
    );
  }
  /*
  ** By default fossil.error() sends its first argument to
  ** console.error(). If fossil.message.targetElement (yes,
  ** fossil.message) is set, it adds the 'error' CSS class to
  ** that element and sets its content as defined for message().
  **
  ** Returns this object.
  */
  F.error = function f(msg){
    const args = Array.prototype.slice.call(arguments,0);
    const tgt = F.message.targetElement;
    args.unshift(timestring(),'UTC:');
    if(tgt){
      tgt.classList.add('error');
      tgt.innerText = args.join(' ');
    }
    else{
      args.unshift('Fossil error:');
      console.error.apply(console,args);
    }
    return this;
  };

  /**
     For each property in the given object, its key/value are encoded
     for use as URL parameters and the combined string is
     returned. e.g. {a:1,b:2} encodes to "a=1&b=2".

     If the 2nd argument is an array, each encoded element is appended
     to that array and tgtArray is returned. The above object would be
     appended as ['a','=','1','&','b','=','2']. This form is used for
     building up parameter lists before join('')ing the array to create
     the result string.

     If passed a truthy 3rd argument, it does not really encode each
     component - it simply concatenates them together.
  */
  F.encodeUrlArgs = function(obj,tgtArray,fakeEncode){
    if(!obj) return '';
    const a = (tgtArray instanceof Array) ? tgtArray : [],
          enc = fakeEncode ? (x)=>x : encodeURIComponent;
    let k, i = 0;
    for( k in obj ){
      if(i++) a.push('&');
      a.push(enc(k),'=',enc(obj[k]));
    }
    return a===tgtArray ? a : a.join('');
  };
  /**
     repoUrl( repoRelativePath [,urlParams] )

     Creates a URL by prepending this.rootPath to the given path
     (which must be relative from the top of the site, without a
     leading slash). If urlParams is a string, it must be
     parameters encoded in the form "key=val&key2=val2..." WITHOUT
     a leading '?'. If it's an object, all of its properties get
     appended to the URL in that form.
  */
  F.repoUrl = function(path,urlParams){
    if(!urlParams) return this.rootPath+path;
    const url=[this.rootPath,path];
    url.push('?');
    if('string'===typeof urlParams) url.push(urlParams);
    else if(urlParams && 'object'===typeof urlParams){
      this.encodeUrlArgs(urlParams, url);
    }
    return url.join('');
  };

  /**
     Returns true if v appears to be a plain object.
  */
  F.isObject = function(v){
    return v &&
      (v instanceof Object) &&
      ('[object Object]' === Object.prototype.toString.apply(v) );
  };

  /**
     For each object argument, this function combines their properties,
     using a last-one-wins policy, and returns a new object with the
     combined properties. If passed a single object, it effectively
     shallowly clones that object.
  */
  F.mergeLastWins = function(){
    var k, o, i;
    const n = arguments.length, rc={};
    for(i = 0; i < n; ++i){
      if(!F.isObject(o = arguments[i])) continue;
      for( k in o ){
        if(o.hasOwnProperty(k)) rc[k] = o[k];
      }
    }
    return rc;
  };

  /**
     Expects to be passed as hash code as its first argument. It
     returns a "shortened" form of hash, with a length which depends
     on the 2nd argument: truthy = fossil.config.hashDigitsUrl, falsy
     = fossil.config.hashDigits, number == that many digits. The
     fossil.config values are derived from the 'hash-digits'
     repo-level config setting or the
     FOSSIL_HASH_DIGITS_URL/FOSSIL_HASH_DIGITS compile-time options.

     If its first arugment is a non-string, that value is returned
     as-is.
  */
  F.hashDigits = function(hash,forUrl){
    const n = ('number'===typeof forUrl)
          ? forUrl : F.config[forUrl ? 'hashDigitsUrl' : 'hashDigits'];
    return ('string'==typeof hash ? hash.substr(
      0, n
    ) : hash);
  };

  /**
     Convenience wrapper which adds an onload event listener to the
     window object. Returns this.
  */
  F.onPageLoad = function(callback){
    window.addEventListener('load', callback, false);
    return this;
  };

  /**
     Convenience wrapper which adds a DOMContentLoadedevent listener
     to the window object. Returns this.
  */
  F.onDOMContentLoaded = function(callback){
    window.addEventListener('DOMContentLoaded', callback, false);
    return this;
  };

  /**
     Assuming name is a repo-style filename, this function returns
     a shortened form of that name:

     .../LastDirectoryPart/FilenamePart

     If the name has 0-1 directory parts, it is returned as-is.

     Design note: in practice it is generally not helpful to elide the
     *last* directory part because embedded docs (in particular) often
     include x/y/index.md and x/z/index.md, both of which would be
     shortened to something like x/.../index.md.
  */
  F.shortenFilename = function(name){
    const a = name.split('/');
    if(a.length<=2) return name;
    while(a.length>2) a.shift();
    return '.../'+a.join('/');
  };

  /**
     Adds a listener for fossil-level custom events. Events are
     delivered to their callbacks as CustomEvent objects with a
     'detail' property holding the event's app-level data.

     The exact events fired differ by page, and not all pages trigger
     events.

     Pedantic sidebar: the custom event's 'target' property is an
     unspecified DOM element. Clients must not rely on its value being
     anything specific or useful.

     Returns this object.
  */
  F.page.addEventListener = function f(eventName, callback){
    if(!f.proxy){
      f.proxy = document.createElement('span');
    }
    f.proxy.addEventListener(eventName, callback, false);
    return this;
  };

  /**
     Internal. Dispatches a new CustomEvent to all listeners
     registered for the given eventName via
     fossil.page.addEventListener(), passing on a new CustomEvent with
     a 'detail' property equal to the 2nd argument. Returns this
     object.
  */
  F.page.dispatchEvent = function(eventName, eventDetail){
    if(this.addEventListener.proxy){
      try{
        this.addEventListener.proxy.dispatchEvent(
          new CustomEvent(eventName,{detail: eventDetail})
        );
      }catch(e){
        console.error(eventName,"event listener threw:",e);
      }
    }
    return this;
  };

  /**
     Sets the innerText of the page's TITLE tag to
     the given text and returns this object.
   */
  F.page.setPageTitle = function(title){
    const t = document.querySelector('title');
    if(t) t.innerText = title;
    return this;
  };

  /**
     Returns a function, that, as long as it continues to be invoked,
     will not be triggered. The function will be called after it stops
     being called for N milliseconds. If `immediate` is passed, call
     the callback immediately and hinder future invocations until at
     least the given time has passed.

     If passed only 1 argument, or passed a falsy 2nd argument,
     the default wait time set in this function's $defaultDelay
     property is used.

     Inspiration: underscore.js, by way of https://davidwalsh.name/javascript-debounce-function
  */
  F.debounce = function f(func, waitMs, immediate) {
    var timeoutId;
    if(!waitMs) waitMs = f.$defaultDelay;
    return function() {
      const context = this, args = Array.prototype.slice.call(arguments);
      const later = function() {
        timeoutId = undefined;
        if(!immediate) func.apply(context, args);
      };
      const callNow = immediate && !timeoutId;
      clearTimeout(timeoutId);
      timeoutId = setTimeout(later, waitMs);
      if(callNow) func.apply(context, args);
    };
  };
  F.debounce.$defaultDelay = 500 /*arbitrary*/;

})(window);
Added src/fossil.confirmer.js.











































































































































































































































































































































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"use strict";
/**************************************************************
Confirmer is a utility which provides an alternative to confirmation
dialog boxes and "check this checkbox to confirm action" widgets. It
acts by modifying a button to require two clicks within a certain
time, with the second click acting as a confirmation of the first. If
the second click does not come within a specified timeout then the
action is not confirmed.

Usage:

fossil.confirmer(domElement, options);

Usually:

fossil.confirmer(element, {
  onconfirm: function(){
    // this === the element.
    // Do whatever the element would normally do when
    // clicked.
  }
});

Options:

  .initialText = initial text of the element. Defaults to the result
  of the element's .value (for INPUT tags) or innerHTML (for
  everything else). After the timeout/tick count expires, or if the
  user confirms the operation, the element's text is re-set to this
  value.

  .confirmText = text to show when in "confirm mode".
  Default=("Confirm: "+initialText), or something similar.

  .timeout = Number of milliseconds to wait for confirmation.
  Default=3000. Alternately, use a combination of .ticks and
  .ticktime.

  .onconfirm = function to call when clicked in confirm mode. Default
  = undefined. The function's "this" is the DOM element to which
  the countdown applies.

  .ontimeout = function to call when confirm is not issued. Default =
  undefined. The function's "this" is the DOM element to which the
  countdown applies.

  .onactivate = function to call when item is clicked, but only if the
  item is not currently in countdown mode. This is called (and must
  return) before the countdown starts. The function's "this" is the
  DOM element to which the countdown applies. This can be used, e.g.,
  to change the element's text or CSS classes.

  .classInitial = optional CSS class string (default='') which is
  added to the element during its "initial" state (the state it is in
  when it is not waiting on a timeout). When the target is activated
  (waiting on a timeout) this class is removed.  In the case of a
  timeout, this class is added *before* the .ontimeout handler is
  called.

  .classWaiting = optional CSS class string (default='') which is
  added to the target when it is waiting on a timeout. When the target
  leaves timeout-wait mode, this class is removed.  When timeout-wait
  mode is entered, this class is added *before* the .onactivate
  handler is called.

  .ticktime = a number of ms to wait per tick (see the next item).
  Default = 1000.

  .ticks = a number of "ticks" to wait, as an alternative to .timeout.
  When this mode is active, the ontick callback will be triggered
  immediately before each tick, including the first one. If both
  .ticks and .timeout are set, only one will be used, but which one is
  unspecified. If passed a ticks value with a truncated integer value
  of 0 or less, it will throw an exception (e.g. that also applies if
  it's passed 0.5).

  .ontick = when using .ticks, this callback is passed the current
  tick number before each tick, and its "this" is the target
  element. On each subsequent call, the tick count will be reduced by
  1, and it is passed 0 after the final tick expires or when the
  action has been confirmed, immediately before the onconfirm or
  ontimeout callback. The intention of the callback is to update the
  label of the target element. If .ticks is set but .ontick is not
  then a default implementation is used which updates the element with
  the .confirmText, prepending a countdown to it.

  .pinSize = if true AND confirmText is set, calculate the larger of
  the element's original and confirmed size and pin it to the larger
  of those sizes to avoid layout reflows when confirmation is
  running. The pinning is implemented by setting its minWidth and
  maxWidth style properties to the same value. This does not work if
  the element text is updated dynamically via ontick(). This ONLY
  works if the element is in the DOM and is not hidden (e.g. via
  display:none) at the time this routine is called, otherwise we
  cannot calculate its size. If the element needs to be hidden, hide
  it after initializing the confirmer.

  .debug = boolean. If truthy, it sends some debug output to the dev
  console to track what it's doing.

Various notes:

- To change the default option values, modify the
  fossil.confirmer.defaultOpts object.

- Exceptions triggered via the callbacks are caught and emitted to the
  dev console if the debug option is enabled, but are otherwise
  ignored.

- Due to the nature of multi-threaded code, it is potentially possible
  that confirmation and timeout actions BOTH happen if the user
  triggers the associated action at "just the right millisecond"
  before the timeout is triggered.

TODO:

- Add an invert option which activates if the timeout is reached and
"times out" if the element is clicked again. e.g. a button which says
"Saving..." and cancels the op if it's clicked again, else it saves
after X time/ticks.

- Internally we save/restore the initial text of non-INPUT elements
using a relatively expensive bit of DOMParser hoop-jumping. We
"should" instead move their child nodes aside (into an internal
out-of-DOM element) and restore them as needed.

Terse Change history:

- 20200811
  - Added pinSize option.

- 20200507:
  - Add a tick-based countdown in order to more easily support
    updating the target element with the countdown.

- 20200506:
  - Ported from jQuery to plain JS.

- 20181112:
  - extended to support certain INPUT elements.
  - made default opts configurable.

- 20070717: initial jQuery-based impl.
*/
(function(F/*the fossil object*/){
  F.confirmer = function f(elem,opt){
    const dbg = opt.debug
          ? function(){console.debug.apply(console,arguments)}
          : function(){};
    dbg("confirmer opt =",opt);
    if(!f.Holder){
      f.isInput = (e)=>/^(input|textarea)$/i.test(e.nodeName);
      f.Holder = function(target,opt){
        const self = this;
        this.target = target;
        this.opt = opt;
        this.timerID = undefined;
        this.state = this.states.initial;
        const isInput = f.isInput(target);
        const updateText = function(msg){
          if(isInput) target.value = msg;
          else{
            /* Jump through some hoops to avoid assigning to innerHTML... */
            const newNode = new DOMParser().parseFromString(msg, 'text/html');
            let childs = newNode.documentElement.querySelector('body');
            childs = childs ? Array.prototype.slice.call(childs.childNodes, 0) : [];
            target.innerText = '';
            childs.forEach((e)=>target.appendChild(e));
          }
        }
        const formatCountdown = (txt, number) => txt + " ["+number+"]";
        if(opt.pinSize && opt.confirmText){
          /* Try to pin the element's width the the greater of its
             current width or its waiting-on-confirmation width
             to avoid layout reflow when it's activated. */
          const digits = (''+(opt.timeout/1000 || opt.ticks)).length;
          const lblLong = formatCountdown(opt.confirmText, "00000000".substr(0,digits+1));
          const w1 = parseInt(target.getBoundingClientRect().width);
          updateText(lblLong);
          const w2 = parseInt(target.getBoundingClientRect().width);
          if(w1 || w2){
            /* If target is not in visible part of the DOM, those values may be 0. */
            target.style.minWidth = target.style.maxWidth = (w1>w2 ? w1 : w2)+"px";
          }
        }
        updateText(this.opt.initialText);
        if(this.opt.ticks && !this.opt.ontick){
          this.opt.ontick = function(tick){
            updateText(formatCountdown(self.opt.confirmText,tick));
          };
        }
        this.setClasses(false);
        this.doTimeout = function() {
          if(this.timerID){
            clearTimeout( this.timerID );
            delete this.timerID;
          }
          if( this.state != this.states.waiting ) {
            // it was already confirmed
            return;
          }
          this.setClasses( false );
          this.state = this.states.initial;
          dbg("Timeout triggered.");
          if( this.opt.ontick ){
            try{this.opt.ontick.call(this.target, 0)}
            catch(e){dbg("ontick EXCEPTION:",e)}
          }
          if( this.opt.ontimeout ) {
            try{this.opt.ontimeout.call(this.target)}
            catch(e){dbg("ontimeout EXCEPTION:",e)}
          }
          updateText(this.opt.initialText);
        };
        target.addEventListener(
          'click', function(){
            switch( self.state ) {
            case( self.states.waiting ):
              /* Cancel the wait on confirmation */
              if( undefined !== self.timerID ){
                clearTimeout( self.timerID );
                delete self.timerID;
              }
              self.state = self.states.initial;
              self.setClasses( false );
              dbg("Confirmed");
              if( self.opt.ontick ){
                try{self.opt.ontick.call(self.target,0)}
                catch(e){dbg("ontick EXCEPTION:",e)}
              }
              if( self.opt.onconfirm ){
                try{self.opt.onconfirm.call(self.target)}
                catch(e){dbg("onconfirm EXCEPTION:",e)}
              }
              updateText(self.opt.initialText);
              break;
            case( self.states.initial ):
              /* Enter the waiting-on-confirmation state... */
              if(self.opt.ticks) self.opt.currentTick = self.opt.ticks;
              self.setClasses( true );
              self.state = self.states.waiting;
              updateText( self.opt.confirmText );
              if( self.opt.onactivate ) self.opt.onactivate.call( self.target );
              if( self.opt.ontick ) self.opt.ontick.call(self.target, self.opt.currentTick);
              if(self.opt.timeout){
                dbg("Waiting "+self.opt.timeout+"ms on confirmation...");
                self.timerID =
                  setTimeout(()=>self.doTimeout(),self.opt.timeout );
              }else if(self.opt.ticks){
                dbg("Waiting on confirmation for "+self.opt.ticks
                    +" ticks of "+self.opt.ticktime+"ms each...");
                self.timerID =
                  setInterval(function(){
                    if(0===--self.opt.currentTick) self.doTimeout();
                    else{
                      try{self.opt.ontick.call(self.target,
                                               self.opt.currentTick)}
                      catch(e){dbg("ontick EXCEPTION:",e)}
                    }
                  },self.opt.ticktime);
              }
              break;
            default: // can't happen.
              break;
            }
          }, false
        );
      };
      f.Holder.prototype = {
        states:{initial: 0, waiting: 1},
        setClasses: function(activated) {
          if(activated) {
            if( this.opt.classWaiting ) {
              this.target.classList.add( this.opt.classWaiting );
            }
            if( this.opt.classInitial ) {
              this.target.classList.remove( this.opt.classInitial );
            }
          }else{
            if( this.opt.classInitial ) {
              this.target.classList.add( this.opt.classInitial );
            }
            if( this.opt.classWaiting ) {
              this.target.classList.remove( this.opt.classWaiting );
            }
          }
        }
      };
    }/*static init*/
    opt = F.mergeLastWins(f.defaultOpts,{
      initialText: (
        f.isInput(elem) ? elem.value : elem.innerHTML
      ) || "PLEASE SET .initialText"
    },opt);
    if(!opt.confirmText){
      opt.confirmText = "Confirm: "+opt.initialText;
    }
    if(opt.ticks){
      delete opt.timeout;
      opt.ticks = 0 | opt.ticks /* ensure it's an integer */;
      if(opt.ticks<=0){
        throw new Error("ticks must be >0");
      }
      if(opt.ticktime <= 0) opt.ticktime = 1000;
    }else{
      delete opt.ontick;
      delete opt.ticks;
    }
    new f.Holder(elem,opt);
    return this;
  };
  /**
     The default options for initConfirmer(). Tweak them to set the
     defaults. A couple of them (initialText and confirmText) are
     dynamically-generated, and can't reasonably be set in the
     defaults. Some, like ticks, cannot be set here because that would
     end up indirectly replacing non-tick timeouts with ticks.
  */
  F.confirmer.defaultOpts = {
    timeout:undefined,
    ticks: 3,
    ticktime: 998/*not *quite* 1000*/,
    onconfirm: undefined,
    ontimeout: undefined,
    onactivate: undefined,
    classInitial: '',
    classWaiting: '',
    debug: false
  };

})(window.fossil);
Added src/fossil.copybutton.js.


































































































































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(function(F/*fossil object*/){
  /**
     A basic API for creating and managing a copy-to-clipboard button.

     Requires: fossil.bootstrap, fossil.dom
  */
  const D = F.dom;

  /**
     Initializes element e as a copy button using the given options
     object.

     The first argument may be a DOM element or a string (CSS selector
     suitable for use with document.querySelector()).

     Options:

     .copyFromElement: DOM element

     .copyFromId: DOM element ID

     .extractText: optional callback which is triggered when the copy
     button is clicked. It must return the text to copy to the
     clipboard. The default is to extract it from the copy-from
     element, using its [value] member, if it has one, else its
     [innerText]. A client-provided callback may use any data source
     it likes, so long as it's synchronous. If this function returns a
     falsy value then the clipboard is not modified. This function is
     called with the fully expanded/resolved options object as its
     "this" (that's a different instance than the one passed to this
     function!).

     At least one of copyFromElement, copyFromId, or extractText must
     be provided, but if copyFromId is not set and e.dataset.copyFromId
     is then that value is used in its place. extractText() trumps the
     other two options.

     .cssClass: optional CSS class, or list of classes, to apply to e.

     .style: optional object of properties to copy directly into
     e.style.

     .oncopy: an optional callback function which is added as an event
     listener for the 'text-copied' event (see below). There is
     functionally no difference from setting this option or adding a
     'text-copied' event listener to the element, and this option is
     considered to be a convenience form of that. For the sake of
     framework-level consistency, the default value is a callback
     which passes the copy button to fossil.dom.flashOnce().

     Note that this function's own defaultOptions object holds default
     values for some options. Any changes made to that object affect
     any future calls to this function.

     Be aware that clipboard functionality might or might not be
     available in any given environment. If this button appears to
     have no effect, that may be because it is not enabled/available
     in the current platform.

     The copy button emits custom event 'text-copied' after it has
     successfully copied text to the clipboard. The event's "detail"
     member is an object with a "text" property holding the copied
     text. Other properties may be added in the future. The event is
     not fired if copying to the clipboard fails (e.g. is not
     available in the current environment).

     As a special case, the copy button's click handler is suppressed
     (becomes a no-op) for as long as the element has the CSS class
     "disabled". This allows elements which cannot be disabled via
     HTML attributes, e.g. a SPAN, to act as a copy button while still
     providing a way to disable them.

     Returns the copy-initialized element.

     Example:

     const button = fossil.copyButton('#my-copy-button', {
       copyFromId: 'some-other-element-id'
     });
     button.addEventListener('text-copied',function(ev){
       fossil.dom.flashOnce(ev.target);
       console.debug("Copied text:",ev.detail.text);
     });
  */
  F.copyButton = function f(e, opt){
    if('string'===typeof e){
      e = document.querySelector(e);
    }
    opt = F.mergeLastWins(f.defaultOptions, opt);
    if(opt.cssClass){
      D.addClass(e, opt.cssClass);
    }
    var srcId, srcElem;
    if(opt.copyFromElement){
      srcElem = opt.copyFromElement;
    }else if((srcId = opt.copyFromId || e.dataset.copyFromId)){
      srcElem = document.querySelector('#'+srcId);
    }
    const extract = opt.extractText || (
      undefined===srcElem.value ? ()=>srcElem.innerText : ()=>srcElem.value
    );
    D.copyStyle(e, opt.style);
    e.addEventListener(
      'click',
      function(ev){
        ev.preventDefault();
        ev.stopPropagation();
        if(e.classList.contains('disabled')) return;
        const txt = extract.call(opt);
        if(txt && D.copyTextToClipboard(txt)){
          e.dispatchEvent(new CustomEvent('text-copied',{
            detail: {text: txt}
          }));
        }
      },
      false
    );
    if('function' === typeof opt.oncopy){
      e.addEventListener('text-copied', opt.oncopy, false);
    }
    return e;
  };

  F.copyButton.defaultOptions = {
    cssClass: 'copy-button',
    oncopy: D.flashOnce.eventHandler,
    style: {/*properties copied as-is into element.style*/}
  };
  
})(window.fossil);
Added src/fossil.diff.js.

















































































































































































































































































































































































































































































































































































































































































































































































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/**
   diff-related JS APIs for fossil.
*/
"use strict";
window.fossil.onPageLoad(function(){
  /**
     Adds toggle checkboxes to each file entry in the diff views for
     /info and similar pages.
  */
  const D = window.fossil.dom;
  const isFdiff = !!document.querySelector('body.fdiff');
  const addToggle = function(diffElem){
    const sib = diffElem.previousElementSibling,
          btn = sib ? D.addClass(D.checkbox(true), 'diff-toggle') : 0;
    if(!sib) return;
    if(isFdiff) sib.parentElement.insertBefore(
                  D.append(D.div(),btn),sib.nextElementSibling);
    else D.append(sib,btn);
    btn.addEventListener('click', function(){
      diffElem.classList.toggle('hidden');
    }, false);
  };
  document.querySelectorAll('table.diff').forEach(addToggle);
});

window.fossil.onPageLoad(function(){
  const F = window.fossil, D = F.dom;
  const Diff = F.diff = {
    e:{/*certain cached DOM elements*/},
    config: {
      chunkLoadLines: (
        F.config.diffContextLines * 3
        /*per /chat discussion*/
      ) || 20,
      chunkFetch: {
        /* Default callack handlers for Diff.fetchArtifactChunk(),
           unless overridden by options passeed to that function. */
        beforesend: function(){},
        aftersend: function(){},
        onerror: function(e){
          console.error("XHR error: ",e);
        }
      }
    }
  };
  /**
     Uses the /jchunk AJAX route to fetch specific lines of a given
     artifact. The argument must be an Object suitable for passing as
     the second argument to fossil.fetch(). Its urlParams property
     must be an object with these properties:

     {
       name: full hash of the target file,
       from: first 1-based line number of the file to fetch (inclusive),
       to: last 1-based line number of the file to fetch (inclusive)
     }

     The fetchOpt object is NOT cloned for use by the call: it is used
     as-is and may be modified by this call. Thus callers "really
     should" pass a temporary object, not a long-lived one.

     If fetchOpt does not define any of the (beforesend, aftersend,
     onerror) callbacks, the defaults from fossil.diff.config.chunkFetch
     are used, so any given client page may override those to provide
     page-level default handling.

     Note that onload callback is ostensibly optional but this
     function is not of much use without an onload
     handler. Conversely, the default onerror handler is often
     customized on a per-page basis to send the error output somewhere
     where the user can see it.

     The response, on success, will be an array of strings, each entry
     being one line from the requested artifact. If the 'to' line is
     greater than the length of the file, the array will be shorter
     than (to-from) lines.

     The /jchunk route reports errors via JSON objects with
     an "error" string property describing the problem.

     This is an async operation. Returns the fossil object.
  */
  Diff.fetchArtifactChunk = function(fetchOpt){
    if(!fetchOpt.beforesend) fetchOpt.beforesend = Diff.config.chunkFetch.beforesend;
    if(!fetchOpt.aftersend) fetchOpt.aftersend = Diff.config.chunkFetch.aftersend;
    if(!fetchOpt.onerror) fetchOpt.onerror = Diff.config.chunkFetch.onerror;
    fetchOpt.responseType = 'json';
    return F.fetch('jchunk', fetchOpt);
  };


  /**
     Extracts either the starting or ending line number from a
     line-numer column in the given tr. isSplit must be true if tr
     represents a split diff, else false. Expects its tr to be valid:
     GIGO applies.  Returns the starting line number if getStart, else
     the ending line number. Returns the line number from the LHS file
     if getLHS is true, else the RHS.
  */
  const extractLineNo = function f(getLHS, getStart, tr, isSplit){
    if(!f.rx){
      f.rx = {
        start: /^\s*(\d+)/,
        end: /(\d+)\n?$/
      }
    }
    const td = tr.querySelector('td:nth-child('+(
      /* TD element with the line numbers */
      getLHS ? 1 : (isSplit ? 4 : 2)
    )+')');
    const m = f.rx[getStart ? 'start' : 'end'].exec(td.innerText);
    return m ? +m[1] : undefined/*"shouldn't happen"*/;
  };

  /**
     Installs chunk-loading controls into TR.diffskip element tr.
     Each instance corresponds to a single TR.diffskip element.

     The goal is to base these controls roughly on github's, a good
     example of which, for use as a model, is:

     https://github.com/msteveb/autosetup/commit/235925e914a52a542
  */
  const ChunkLoadControls = function(tr){
    this.$fetchQueue = [];
    this.e = {/*DOM elements*/
      tr: tr,
      table: tr.parentElement/*TBODY*/.parentElement
    };
    this.isSplit = this.e.table.classList.contains('splitdiff')/*else udiff*/;
    this.fileHash = this.e.table.dataset.lefthash;
    tr.$chunker = this /* keep GC from reaping this */;
    this.pos = {
      /* These line numbers correspond to the LHS file. Because the
         contents are common to both sides, we have the same number
         for the RHS, but need to extract those line numbers from the
         neighboring TR blocks */
      startLhs: +tr.dataset.startln,
      endLhs: +tr.dataset.endln
    };
    D.clearElement(tr);
    this.e.td = D.addClass(
      /* Holder for our UI controls */
      D.attr(D.td(tr), 'colspan', this.isSplit ? 5 : 4),
      'chunkctrl'
    );
    this.e.msgWidget = D.addClass(D.span(), 'hidden');
    this.e.btnWrapper = D.div();
    D.append(this.e.td, this.e.btnWrapper);
    /**
       Depending on various factors, we need one or more of:

       - A single button to load the initial chunk incrementally

       - A single button to load all lines then remove this control

       - Two buttons: one to load upwards, one to load downwards

       - A single button to load the final chunk incrementally
    */
    if(tr.nextElementSibling){
      this.pos.next = {
        startLhs: extractLineNo(true, true, tr.nextElementSibling, this.isSplit),
        startRhs: extractLineNo(false, true, tr.nextElementSibling, this.isSplit)
      };
    }
    if(tr.previousElementSibling){
      this.pos.prev = {
        endLhs: extractLineNo(true, false, tr.previousElementSibling, this.isSplit),
        endRhs: extractLineNo(false, false, tr.previousElementSibling, this.isSplit)
      };
    }
    let btnUp = false, btnDown = false;
    /**
       this.pos.next refers to the line numbers in the next TR's chunk.
       this.pos.prev refers to the line numbers in the previous TR's chunk.
       this.pos corresponds to the line numbers of the gap.
    */
    if(this.pos.prev && this.pos.next
       && ((this.pos.endLhs - this.pos.startLhs)
           <= Diff.config.chunkLoadLines)){
      /* Place a single button to load the whole block, rather
         than separate up/down buttons. */
      btnDown = false;
      btnUp = this.createButton(this.FetchType.FillGap);
    }else{
      /* Figure out which chunk-load buttons to add... */
      if(this.pos.prev){
        btnDown = this.createButton(this.FetchType.PrevDown);
      }
      if(this.pos.next){
        btnUp = this.createButton(this.FetchType.NextUp);
      }
    }
    //this.e.btnUp = btnUp;
    //this.e.btnDown = btnDown;
    if(btnUp) D.append(this.e.btnWrapper, btnUp);
    if(btnDown) D.append(this.e.btnWrapper, btnDown);
    D.append(this.e.btnWrapper, this.e.msgWidget);
    /* For debugging only... */
    this.e.posState = D.span();
    D.append(this.e.btnWrapper, this.e.posState);
    this.updatePosDebug();
  };

  ChunkLoadControls.prototype = {
    /** An "enum" of values describing the types of context
        fetches/operations performed by this type. The values in this
        object must not be changed without modifying all logic which
        relies on their relative order. */
    FetchType:{
      /** Append context to the bottom of the previous diff chunk. */
      PrevDown: 1,
      /** Fill a complete gap between the previous/next diff chunks
          or at the start of the next chunk or end of the previous
          chunks. */
      FillGap: 0,
      /** Prepend context to the start of the next diff chunk. */
      NextUp: -1,
      /** Process the next queued action. */
      ProcessQueue: 0x7fffffff
    },

    /**
       Creates and returns a button element for fetching a chunk in
       the given fetchType (as documented for fetchChunk()).
    */
    createButton: function(fetchType){
      let b;
      switch(fetchType){
      case this.FetchType.PrevDown:
        b = D.append(
          D.addClass(D.span(), 'down'),
          D.span(/*glyph holder*/)
        );
        break;
      case this.FetchType.FillGap:
        b = D.append(
          D.addClass(D.span(), 'up', 'down'),
          D.span(/*glyph holder*/)
        );
        break;
      case this.FetchType.NextUp:
        b = D.append(
          D.addClass(D.span(), 'up'),
          D.span(/*glyph holder*/)
        );
        break;
      default:
        throw new Error("Internal API misuse: unexpected fetchType value "+fetchType);
      }
      D.addClass(b, 'jcbutton');
      b.addEventListener('click', ()=>this.fetchChunk(fetchType),false);
      return b;
    },

    updatePosDebug: function(){
      if(this.e.posState){
        D.clearElement(this.e.posState);
        //D.append(D.clearElement(this.e.posState), JSON.stringify(this.pos));
      }
      return this;
    },

    /* Attempt to clean up resources and remove some circular references to
       that GC can do the right thing. */
    destroy: function(){
      delete this.$fetchQueue;
      D.remove(this.e.tr);
      delete this.e.tr.$chunker;
      delete this.e.tr;
      delete this.e;
      delete this.pos;
    },

    /**
       If the gap between this.pos.endLhs/startLhs is less than or equal to
       Diff.config.chunkLoadLines then this function replaces any up/down buttons
       with a gap-filler button, else it's a no-op. Returns this object.

       As a special case, do not apply this at the start or bottom
       of the diff, only between two diff chunks.
    */
    maybeReplaceButtons: function(){
      if(this.pos.next && this.pos.prev
         && (this.pos.endLhs - this.pos.startLhs <= Diff.config.chunkLoadLines)){
        D.clearElement(this.e.btnWrapper);
        D.append(this.e.btnWrapper, this.createButton(this.FetchType.FillGap));
        if( this.$fetchQueue && this.$fetchQueue.length>1 ){
          this.$fetchQueue[1] = this.FetchType.FillGap;
          this.$fetchQueue.length = 2;
        }
      }
      return this;
    },

    /**
       Callack for /jchunk responses.
    */
    injectResponse: function f(fetchType/*as for fetchChunk()*/,
                               urlParam/*from fetchChunk()*/,
                               lines/*response lines*/){
      if(!lines.length){
        /* No more data to load */
        this.destroy();
        return this;
      }
      this.msg(false);
      //console.debug("Loaded line range ",
      //urlParam.from,"-",urlParam.to, "fetchType ",fetchType);
      const lineno = [],
            trPrev = this.e.tr.previousElementSibling,
            trNext = this.e.tr.nextElementSibling,
            doAppend = (
              !!trPrev && fetchType>=this.FetchType.FillGap
            ) /* true to append to previous TR, else prepend to NEXT TR */;
      const tr = doAppend ? trPrev : trNext;
      const joinTr = (
        this.FetchType.FillGap===fetchType && trPrev && trNext
      ) ? trNext : false
      /* Truthy if we want to combine trPrev, the new content, and
         trNext into trPrev and then remove trNext. */;
      let i, td;
      if(!f.convertLines){
        /* Reminder: string.replaceAll() is a relatively new
           JS feature, not available in some still-widely-used
           browser versions. */
        f.rx = [[/&/g, '&amp;'], [/</g, '&lt;']];
        f.convertLines = function(li){
          var s = li.join('\n');
          f.rx.forEach((a)=>s=s.replace(a[0],a[1]));
          return s + '\n';
        };
      }
      if(1){ // LHS line numbers...
        const selector = '.difflnl > pre';
        td = tr.querySelector(selector);
        const lnTo = Math.min(urlParam.to,
                              urlParam.from +
                              lines.length - 1/*b/c request range is inclusive*/);
        for( i = urlParam.from; i <= lnTo; ++i ){
          lineno.push(i);
        }
        const lineNoTxt = lineno.join('\n')+'\n';
        const content = [td.innerHTML];
        if(doAppend) content.push(lineNoTxt);
        else content.unshift(lineNoTxt);
        if(joinTr){
          content.push(trNext.querySelector(selector).innerHTML);
        }
        td.innerHTML = content.join('');
      }

      if(1){// code block(s)...
        const selector = '.difftxt > pre';
        td = tr.querySelectorAll(selector);
        const code = f.convertLines(lines);
        let joinNdx = 0/*selector[X] index to join together*/;
        td.forEach(function(e){
          const content = [e.innerHTML];
          if(doAppend) content.push(code);
          else content.unshift(code);
          if(joinTr){
            content.push(trNext.querySelectorAll(selector)[joinNdx++].innerHTML)
          }
          e.innerHTML = content.join('');
        });
      }

      if(1){// Add blank lines in (.diffsep>pre)
        const selector = '.diffsep > pre';
        td = tr.querySelector(selector);
        for(i = 0; i < lineno.length; ++i) lineno[i] = '';
        const blanks = lineno.join('\n')+'\n';
        const content = [td.innerHTML];
        if(doAppend) content.push(blanks);
        else content.unshift(blanks);
        if(joinTr){
          content.push(trNext.querySelector(selector).innerHTML);
        }
        td.innerHTML = content.join('');
      }

      if(this.FetchType.FillGap===fetchType){
        /* Closing the whole gap between two chunks or a whole gap
           at the start or end of a diff. */
        // RHS line numbers...
        let startLnR = this.pos.prev
            ? this.pos.prev.endRhs+1 /* Closing the whole gap between two chunks
                                        or end-of-file gap. */
            : this.pos.next.startRhs - lines.length /* start-of-file gap */;
        lineno.length = lines.length;
        for( i = startLnR; i < startLnR + lines.length; ++i ){
          lineno[i-startLnR] = i;
        }
        const selector = '.difflnr > pre';
        td = tr.querySelector(selector);
        const lineNoTxt = lineno.join('\n')+'\n';
        lineno.length = 0;
        const content = [td.innerHTML];
        if(doAppend) content.push(lineNoTxt);
        else content.unshift(lineNoTxt);
        if(joinTr){
          content.push(trNext.querySelector(selector).innerHTML);
        }
        td.innerHTML = content.join('');
        if(joinTr) D.remove(joinTr);
        this.destroy();
        return this;
      }else if(this.FetchType.PrevDown===fetchType){
        /* Append context to previous TR. */
        // RHS line numbers...
        let startLnR = this.pos.prev.endRhs+1;
        lineno.length = lines.length;
        for( i = startLnR; i < startLnR + lines.length; ++i ){
          lineno[i-startLnR] = i;
        }
        this.pos.startLhs += lines.length;
        this.pos.prev.endRhs += lines.length;
        this.pos.prev.endLhs += lines.length;
        const selector = '.difflnr > pre';
        td = tr.querySelector(selector);
        const lineNoTxt = lineno.join('\n')+'\n';
        lineno.length = 0;
        const content = [td.innerHTML];
        if(doAppend) content.push(lineNoTxt);
        else content.unshift(lineNoTxt);
        td.innerHTML = content.join('');
        if(lines.length < (urlParam.to - urlParam.from)){
          /* No more data. */
          this.destroy();
        }else{
          this.maybeReplaceButtons();
          this.updatePosDebug();
        }
        return this;
      }else if(this.FetchType.NextUp===fetchType){
        /* Prepend content to next TR. */
        // RHS line numbers...
        if(doAppend){
          throw new Error("Internal precondition violation: doAppend is true.");
        }
        let startLnR = this.pos.next.startRhs - lines.length;
        lineno.length = lines.length;
        for( i = startLnR; i < startLnR + lines.length; ++i ){
          lineno[i-startLnR] = i;
        }
        this.pos.endLhs -= lines.length;
        this.pos.next.startRhs -= lines.length;
        this.pos.next.startLhs -= lines.length;
        const selector = '.difflnr > pre';
        td = tr.querySelector(selector);
        const lineNoTxt = lineno.join('\n')+'\n';
        lineno.length = 0;
        td.innerHTML = lineNoTxt + td.innerHTML;
        if(this.pos.endLhs<1
           || lines.length < (urlParam.to - urlParam.from)){
          /* No more data. */
          this.destroy();
        }else{
          this.maybeReplaceButtons();
          this.updatePosDebug();
        }
        return this;
      }else{
        throw new Error("Unexpected 'fetchType' value.");
      }
    },

    /**
       Sets this widget's message to the given text. If the message
       represents an error, the first argument must be truthy, else it
       must be falsy. Returns this object.
    */
    msg: function(isError,txt){
      if(txt){
        if(isError) D.addClass(this.e.msgWidget, 'error');
        else D.removeClass(this.e.msgWidget, 'error');
        D.append(
          D.removeClass(D.clearElement(this.e.msgWidget), 'hidden'),
          txt);
      }else{
        D.addClass(D.clearElement(this.e.msgWidget), 'hidden');
      }
      return this;
    },

    /**
       Fetches and inserts a line chunk. fetchType is:

       this.FetchType.NextUp = upwards from next chunk (this.pos.next)

       this.FetchType.FillGap = the whole gap between this.pos.prev
       and this.pos.next, or the whole gap before/after the
       initial/final chunk in the diff.

       this.FetchType.PrevDown = downwards from the previous chunk
       (this.pos.prev)

       Those values are set at the time this object is initialized but
       one instance of this class may have 2 buttons, one each for
       fetchTypes NextUp and PrevDown.

       This is an async operation. While it is in transit, any calls
       to this function will have no effect except (possibly) to emit
       a warning. Returns this object.
    */
    fetchChunk: function(fetchType){
      if( !this.$fetchQueue ) return this;  // HACKHACK: are we destroyed?
      if( fetchType==this.FetchType.ProcessQueue ){
        this.$fetchQueue.shift();
        if( this.$fetchQueue.length==0 ) return this;
        //console.log('fetchChunk: processing queue ...');
      }
      else{
        this.$fetchQueue.push(fetchType);
        if( this.$fetchQueue.length!=1 ) return this;
        //console.log('fetchChunk: processing user input ...');
      }
      fetchType = this.$fetchQueue[0];
      if( fetchType==this.FetchType.ProcessQueue ){
        /* Unexpected! Clear queue so recovery (manual restart) is possible. */
        this.$fetchQueue.length = 0;
        return this;
      }
      /* Forewarning, this is a bit confusing: when fetching the
         previous lines, we're doing so on behalf of the *next* diff
         chunk (this.pos.next), and vice versa. */
      if(fetchType===this.FetchType.NextUp && !this.pos.next
        || fetchType===this.FetchType.PrevDown && !this.pos.prev){
        console.error("Attempt to fetch diff lines but don't have any.");
        return this;
      }
      this.msg(false,"Fetching diff chunk...");
      const self = this;
      const fOpt = {
        urlParams:{
          name: this.fileHash, from: 0, to: 0
        },
        aftersend: ()=>this.msg(false),
        onload: function(list){
          self.injectResponse(fetchType,up,list);
          if( !self.$fetchQueue || self.$fetchQueue.length==0 ) return;
          /* Keep queue length > 0, or clicks stalled during (unusually lengthy)
             injectResponse() may sneak in as soon as setTimeout() allows, find
             an empty queue, and therefore start over with queue processing. */
          self.$fetchQueue[0] = self.FetchType.ProcessQueue;
          setTimeout(self.fetchChunk.bind(self,self.FetchType.ProcessQueue));
        }
      };
      const up = fOpt.urlParams;
      if(fetchType===this.FetchType.FillGap){
        /* Easiest case: filling a whole gap. */
        up.from = this.pos.startLhs;
        up.to = this.pos.endLhs;
      }else if(this.FetchType.PrevDown===fetchType){
        /* Append to previous TR. */
        if(!this.pos.prev){
          console.error("Attempt to fetch next diff lines but don't have any.");
          return this;
        }
        up.from = this.pos.prev.endLhs + 1;
        up.to = up.from +
          Diff.config.chunkLoadLines - 1/*b/c request range is inclusive*/;
        if( this.pos.next && this.pos.next.startLhs <= up.to ){
          up.to = this.pos.next.startLhs - 1;
          fetchType = this.FetchType.FillGap;
        }
      }else{
        /* Prepend to next TR */
        if(!this.pos.next){
          console.error("Attempt to fetch previous diff lines but don't have any.");
          return this;
        }
        up.to = this.pos.next.startLhs - 1;
        up.from = Math.max(1, up.to - Diff.config.chunkLoadLines + 1);
        if( this.pos.prev && this.pos.prev.endLhs >= up.from ){
          up.from = this.pos.prev.endLhs + 1;
          fetchType = this.FetchType.FillGap;
        }
      }
      //console.debug("fetchChunk(",fetchType,")",up);
      fOpt.onerror = function(err){
        if(self.e/*guard against a late-stage onerror() call*/){
          self.msg(true,err.message);
          self.$fetchQueue.length = 0;
        }else{
          Diff.config.chunkFetch.onerror.call(this,err);
        }
      };
      Diff.fetchArtifactChunk(fOpt);
      return this;
    }
  };

  /**
     Adds context-loading buttons to one or more tables. The argument
     may be a forEach-capable list of diff table elements, a query
     selector string matching 0 or more diff tables, or falsy, in
     which case all relevant diff tables are set up. It tags each
     table it processes to that it will not be processed multiple
     times by subsequent calls to this function.

     Note that this only works for diffs which have been marked up
     with certain state, namely table.dataset.lefthash and TR
     entries which hold state related to browsing context.
  */
  Diff.setupDiffContextLoad = function(tables){
    if('string'===typeof tables){
      tables = document.querySelectorAll(tables);
    }else if(!tables){
      tables = document.querySelectorAll('table.diff[data-lefthash]:not(.diffskipped)');
    }
    /* Potential performance-related TODO: instead of installing all
       of these at once, install them as the corresponding TR is
       scrolled into view. */
    tables.forEach(function(table){
      if(table.classList.contains('diffskipped') || !table.dataset.lefthash) return;
      D.addClass(table, 'diffskipped'/*avoid processing these more than once */);
      table.querySelectorAll('tr.diffskip[data-startln]').forEach(function(tr){
        new ChunkLoadControls(D.addClass(tr, 'jchunk'));
      });
    });
    return F;
  };
  Diff.setupDiffContextLoad();
});
/*
** For a side-by-side diff, ensure that horizontal scrolling of either
** side of the diff is synchronized with the other side.
*/
window.fossil.onPageLoad(function(){
  const F = window.fossil, D = F.dom, Diff = F.diff;

  /* Look for a parent element to hold the sbs-sync-scroll toggle
     checkbox.  This differs per page. If we don't find one, simply
     elide that toggle and use whatever preference the user last
     specified (defaulting to on). */
  let cbSync /* scroll-sync checkbox */;
  let eToggleParent /* element to put the sync-scroll checkbox in */;
  const potentialParents = [ /* possible parents for the checkbox */
    /* Put the most likely pages at the end, as array.pop() is more
       efficient than array.shift() (see loop below). */
    /* /filedit */ 'body.cpage-fileedit #fileedit-tab-diff-buttons',
    /* /wikiedit */ 'body.cpage-wikiedit #wikiedit-tab-diff-buttons',
    /* /fdiff */ 'body.fdiff form div.submenu',
    /* /vdiff */ 'body.vdiff form div.submenu',
    /* /info, /vinfo */ 'body.vinfo div.sectionmenu.info-changes-menu'
  ];
  while( potentialParents.length ){
    if( (eToggleParent = document.querySelector(potentialParents.pop())) ){
      break;
    }
  }
  const keySbsScroll = 'sync-diff-scroll' /* F.storage key */;
  if( eToggleParent ){
    /* Add a checkbox to toggle sbs scroll sync. Remember that in
       order to be UI-consistent in the /vdiff page we have to ensure
       that the checkbox is to the LEFT of of its label. We store the
       sync-scroll preference in F.storage (not a cookie) so that it
       persists across page loads and different apps. */
    cbSync = D.checkbox(keySbsScroll, F.storage.getBool(keySbsScroll,true));
    D.append(eToggleParent, D.append(
      D.addClass(D.create('span'), 'input-with-label'),
      D.append(D.create('label'),
               cbSync, "Sync side-by-side scrolling")
    ));
    cbSync.addEventListener('change', function(e){
      F.storage.set(keySbsScroll, e.target.checked);
    });
  }
  const useSync = cbSync ? ()=>cbSync.checked : ()=>F.storage.getBool(keySbsScroll,true);

  /* Now set up the events to enable syncronized scrolling... */
  const scrollLeft = function(event){
    const table = this.parentElement/*TD*/.parentElement/*TR*/.
      parentElement/*TBODY*/.parentElement/*TABLE*/;
    if( useSync() ){
      table.$txtPres.forEach((e)=>(e===this) ? 1 : (e.scrollLeft = this.scrollLeft));
    }
    return false;
  };
  const SCROLL_LEN = 64/* pixels to scroll for keyboard events */;
  const keycodes = Object.assign(Object.create(null),{
    37/*cursor left*/: -SCROLL_LEN, 39/*cursor right*/: SCROLL_LEN
  });
  /** keydown handler for a diff element */
  const handleDiffKeydown = function(e){
    const len = keycodes[e.keyCode];
    if( !len ) return false;
    if( useSync() ){
      this.$txtPres[0].scrollLeft += len;
    }else if( this.$preCurrent ){
      this.$preCurrent.scrollLeft += len;
    }
    return false;
  };
  /**
     Sets up synchronized scrolling of table.splitdiff element
     `diff`. If passed no argument, it scans the dom for elements to
     initialize. The second argument is for this function's own
     internal use.

     It's okay (but wasteful) to pass the same element to this
     function multiple times: it will only be set up for sync
     scrolling the first time it's passed to this function.

     Note that this setup is ignorant of the cbSync toggle: the toggle
     is checked when scrolling, not when initializing the sync-scroll
     capability.
  */
  const initTableDiff = function f(diff, unifiedDiffs){
    if(!diff){
      let i, diffs;
      diffs = document.querySelectorAll('table.splitdiff');
      for(i=0; i<diffs.length; ++i){
        f.call(this, diffs[i], false);
      }
      diffs = document.querySelectorAll('table.udiff');
      for(i=0; i<diffs.length; ++i){
        f.call(this, diffs[i], true);
      }
      return this;
    }
    diff.$txtCols = diff.querySelectorAll('td.difftxt');
    diff.$txtPres = diff.querySelectorAll('td.difftxt pre');
    if(!unifiedDiffs){
      diff.$txtPres.forEach(function(e){
        if(!e.classList.contains('scroller')){
          D.addClass(e, 'scroller');
          e.addEventListener('scroll', scrollLeft, false);
        }
      });
      diff.tabIndex = 0;
      if(!diff.classList.contains('scroller')){
        /* Keyboard-based scrolling requires special-case handling to
           ensure that we scroll the proper side of the diff when sync
           is off. */
        D.addClass(diff, 'scroller');
        diff.addEventListener('keydown', handleDiffKeydown, false);
        const handleLRClick = function(ev){
          diff.$preCurrent = this /* NOT ev.target, which is probably a child element */;
        };
        diff.$txtPres.forEach((e)=>e.addEventListener('click', handleLRClick, false));
      }
    }
    return this;
  }
  window.fossil.page.tweakSbsDiffs = function(){
    document.querySelectorAll('table.splitdiff').forEach((e)=>initTableDiff(e));
  };
  initTableDiff();
}, false);
Added src/fossil.dom.js.





























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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"use strict";
(function(F/*fossil object*/){
  /**
     A collection of HTML DOM utilities to simplify, a bit, using the
     DOM API. It is focused on manipulation of the DOM, but one of its
     core mantras is "No innerHTML." Using innerHTML in this code, in
     particular assigning to it, is absolutely verboten.
  */
  const argsToArray = (a)=>Array.prototype.slice.call(a,0);
  const isArray = (v)=>v instanceof Array;

  const dom = {
    create: function(elemType){
      return document.createElement(elemType);
    },
    createElemFactory: function(eType){
      return function(){
        return document.createElement(eType);
      };
    },
    remove: function(e){
      if(e.forEach){
        e.forEach(
          (x)=>x.parentNode.removeChild(x)
        );
      }else{
        e.parentNode.removeChild(e);
      }
      return e;
    },
    /**
       Removes all child DOM elements from the given element
       and returns that element.

       If e has a forEach method (is an array or DOM element
       collection), this function instead clears each element in the
       collection. May be passed any number of arguments, each of
       which must be a DOM element or a container of DOM elements with
       a forEach() method. Returns its first argument.
    */
    clearElement: function f(e){
      if(!f.each){
        f.each = function(e){
          if(e.forEach){
            e.forEach((x)=>f(x));
            return e;
          }
          while(e.firstChild) e.removeChild(e.firstChild);
        };
      }
      argsToArray(arguments).forEach(f.each);
      return arguments[0];
    },
  }/* dom object */;

  /**
     Returns the result of splitting the given str on
     a run of spaces of (\s*,\s*).
  */
  dom.splitClassList = function f(str){
    if(!f.rx){
      f.rx = /(\s+|\s*,\s*)/;
    }
    return str ? str.split(f.rx) : [str];
  };

  dom.div = dom.createElemFactory('div');
  dom.p = dom.createElemFactory('p');
  dom.code = dom.createElemFactory('code');
  dom.pre = dom.createElemFactory('pre');
  dom.header = dom.createElemFactory('header');
  dom.footer = dom.createElemFactory('footer');
  dom.section = dom.createElemFactory('section');
  dom.span = dom.createElemFactory('span');
  dom.strong = dom.createElemFactory('strong');
  dom.em = dom.createElemFactory('em');
  dom.ins = dom.createElemFactory('ins');
  dom.del = dom.createElemFactory('del');
  /**
     Returns a LABEL element. If passed an argument,
     it must be an id or an HTMLElement with an id,
     and that id is set as the 'for' attribute of the
     label. If passed 2 arguments, the 2nd is text or
     a DOM element to append to the label.
  */
  dom.label = function(forElem, text){
    const rc = document.createElement('label');
    if(forElem){
      if(forElem instanceof HTMLElement){
        forElem = this.attr(forElem, 'id');
      }
      dom.attr(rc, 'for', forElem);
    }
    if(text) this.append(rc, text);
    return rc;
  };
  /**
     Returns an IMG element with an optional src
     attribute value.
  */
  dom.img = function(src){
    const e = this.create('img');
    if(src) e.setAttribute('src',src);
    return e;
  };
  /**
     Creates and returns a new anchor element with the given
     optional href and label. If label===true then href is used
     as the label.
  */
  dom.a = function(href,label){
    const e = this.create('a');
    if(href) e.setAttribute('href',href);
    if(label) e.appendChild(dom.text(true===label ? href : label));
    return e;
  };
  dom.hr = dom.createElemFactory('hr');
  dom.br = dom.createElemFactory('br');
  /** Returns a new TEXT node which contains the text of all of the
      arguments appended together. */
  dom.text = function(/*...*/){
    return document.createTextNode(argsToArray(arguments).join(''));
  };
  /** Returns a new Button element with the given optional
      label and on-click event listener function. */
  dom.button = function(label,callback){
    const b = this.create('button');
    if(label) b.appendChild(this.text(label));
    if('function' === typeof callback){
      b.addEventListener('click', callback, false);
    }
    return b;
  };
  /**
     Returns a TEXTAREA element.

     Usages:

     ([boolean readonly = false])
     (non-boolean rows[,cols[,readonly=false]])

     Each of the rows/cols/readonly attributes is only set if it is
     truthy.
  */
  dom.textarea = function(){
    const rc = this.create('textarea');
    let rows, cols, readonly;
    if(1===arguments.length){
      if('boolean'===typeof arguments[0]){
        readonly = !!arguments[0];
      }else{
        rows = arguments[0];
      }
    }else if(arguments.length){
      rows = arguments[0];
      cols = arguments[1];
      readonly = arguments[2];
    }
    if(rows) rc.setAttribute('rows',rows);
    if(cols) rc.setAttribute('cols', cols);
    if(readonly) rc.setAttribute('readonly', true);
    return rc;
  };

  /**
     Returns a new SELECT element.
  */
  dom.select = dom.createElemFactory('select');

  /**
     Returns an OPTION element with the given value and label text
     (which defaults to the value).

     Usage:

     (value[, label])
     (selectElement [,value [,label = value]])

     Any forms taking a SELECT element append the new element to the
     given SELECT element.

     If any label is falsy and the value is not then the value is used
     as the label. A non-falsy label value may have any type suitable
     for passing as the 2nd argument to dom.append().

     If the value has the undefined value then it is NOT assigned as
     the option element's value and no label is set unless it has a
     non-undefined value.
  */
  dom.option = function(value,label){
    const a = arguments;
    var sel;
    if(1==a.length){
      if(a[0] instanceof HTMLElement){
        sel = a[0];
      }else{
        value = a[0];
      }
    }else if(2==a.length){
      if(a[0] instanceof HTMLElement){
        sel = a[0];
        value = a[1];
      }else{
        value = a[0];
        label = a[1];
      }
    }
    else if(3===a.length){
      sel = a[0];
      value = a[1];
      label = a[2];
    }
    const o = this.create('option');
    if(undefined !== value){
      o.value = value;
      this.append(o, this.text(label || value));
    }else if(undefined !== label){
      this.append(o, label);
    }
    if(sel) this.append(sel, o);
    return o;
  };
  dom.h = function(level){
    return this.create('h'+level);
  };
  dom.ul = dom.createElemFactory('ul');
  /**
     Creates and returns a new LI element, appending it to the
     given parent argument if it is provided.
  */
  dom.li = function(parent){
    const li = this.create('li');
    if(parent) parent.appendChild(li);
    return li;
  };

  /**
     Returns a function which creates a new DOM element of the
     given type and accepts an optional parent DOM element
     argument. If the function's argument is truthy, the new
     child element is appended to the given parent element.
     Returns the new child element.
  */
  dom.createElemFactoryWithOptionalParent = function(childType){
    return function(parent){
      const e = this.create(childType);
      if(parent) parent.appendChild(e);
      return e;
    };
  };
  
  dom.table = dom.createElemFactory('table');
  dom.thead = dom.createElemFactoryWithOptionalParent('thead');
  dom.tbody = dom.createElemFactoryWithOptionalParent('tbody');
  dom.tfoot = dom.createElemFactoryWithOptionalParent('tfoot');
  dom.tr = dom.createElemFactoryWithOptionalParent('tr');
  dom.td = dom.createElemFactoryWithOptionalParent('td');
  dom.th = dom.createElemFactoryWithOptionalParent('th');

  /**
     Creates and returns a FIELDSET element, optionaly with a LEGEND
     element added to it. If legendText is an HTMLElement then is is
     assumed to be a LEGEND and is appended as-is, else it is assumed
     (if truthy) to be a value suitable for passing to
     dom.append(aLegendElement,...).
  */
  dom.fieldset = function(legendText){
    const fs = this.create('fieldset');
    if(legendText){
      this.append(
        fs,
        (legendText instanceof HTMLElement)
          ? legendText
          : this.append(this.legend(legendText))
      );
    }
    return fs;
  };
  /**
     Returns a new LEGEND legend element. The given argument, if
     not falsy, is append()ed to the element (so it may be a string
     or DOM element.
  */
  dom.legend = function(legendText){
    const rc = this.create('legend');
    if(legendText) this.append(rc, legendText);
    return rc;
  };

  /**
     Appends each argument after the first to the first argument
     (a DOM node) and returns the first argument.

     - If an argument is a string or number, it is transformed
     into a text node.

     - If an argument is an array or has a forEach member, this
     function appends each element in that list to the target
     by calling its forEach() method to pass it (recursively)
     to this function.

     - Else the argument assumed to be of a type legal
     to pass to parent.appendChild().
  */
  dom.append = function f(parent/*,...*/){
    const a = argsToArray(arguments);
    a.shift();
    for(let i in a) {
      var e = a[i];
      if(isArray(e) || e.forEach){
        e.forEach((x)=>f.call(this, parent,x));
        continue;
      }
      if('string'===typeof e
         || 'number'===typeof e
         || 'boolean'===typeof e
         || e instanceof Error) e = this.text(e);
      parent.appendChild(e);
    }
    return parent;
  };

  dom.input = function(type){
    return this.attr(this.create('input'), 'type', type);
  };
  /**
     Returns a new CHECKBOX input element.

     Usages:

     ([boolean checked = false])
     (non-boolean value [,boolean checked])
  */
  dom.checkbox = function(value, checked){
    const rc = this.input('checkbox');
    if(1===arguments.length && 'boolean'===typeof value){
      checked = !!value;
      value = undefined;
    }
    if(undefined !== value) rc.value = value;
    if(!!checked) rc.checked = true;
    return rc;
  };
  /**
     Returns a new RADIO input element.

     ([boolean checked = false])
     (string name [,boolean checked])
     (string name, non-boolean value [,boolean checked])
  */
  dom.radio = function(){
    const rc = this.input('radio');
    let name, value, checked;
    if(1===arguments.length && 'boolean'===typeof name){
      checked = arguments[0];
      name = value = undefined;
    }else if(2===arguments.length){
      name = arguments[0];
      if('boolean'===typeof arguments[1]){
        checked = arguments[1];
      }else{
        value = arguments[1];
        checked = undefined;
      }
    }else if(arguments.length){
      name = arguments[0];
      value = arguments[1];
      checked = arguments[2];
    }
    if(name) this.attr(rc, 'name', name);
    if(undefined!==value) rc.value = value;
    if(!!checked) rc.checked = true;
    return rc;
  };

  /**
     Internal impl for addClass(), removeClass().
  */
  const domAddRemoveClass = function f(action,e){
    if(!f.rxSPlus){
      f.rxSPlus = /\s+/;
      f.applyAction = function(e,a,v){
        if(!e || !v
           /*silently skip empty strings/flasy
             values, for user convenience*/) return;
        else if(e.forEach){
          e.forEach((E)=>E.classList[a](v));
        }else{
          e.classList[a](v);
        }
      };
    }
    var i = 2, n = arguments.length;
    for( ; i < n; ++i ){
      let c = arguments[i];
      if(!c) continue;
      else if(isArray(c) ||
              ('string'===typeof c
               && c.indexOf(' ')>=0
               && (c = c.split(f.rxSPlus)))
              || c.forEach
             ){
        c.forEach((k)=>k ? f.applyAction(e, action, k) : false);
        // ^^^ we could arguably call f(action,e,k) to recursively
        // apply constructs like ['foo bar'] or [['foo'],['bar baz']].
      }else if(c){
        f.applyAction(e, action, c);
      }
    }
    return e;
  };

  /**
     Adds one or more CSS classes to one or more DOM elements.

     The first argument is a target DOM element or a list type of such elements
     which has a forEach() method.  Each argument
     after the first may be a string or array of strings. Each
     string may contain spaces, in which case it is treated as a
     list of CSS classes.

     Returns e.
  */
  dom.addClass = function(e,c){
    const a = argsToArray(arguments);
    a.unshift('add');
    return domAddRemoveClass.apply(this, a);
  };
  /**
     The 'remove' counterpart of the addClass() method, taking
     the same arguments and returning the same thing.
  */
  dom.removeClass = function(e,c){
    const a = argsToArray(arguments);
    a.unshift('remove');
    return domAddRemoveClass.apply(this, a);
  };

  /**
     Toggles CSS class c on e (a single element for forEach-capable
     collection of elements). Returns its first argument.
  */
  dom.toggleClass = function f(e,c){
    if(e.forEach){
      e.forEach((x)=>x.classList.toggle(c));
    }else{
      e.classList.toggle(c);
    }
    return e;
  };

  /**
     Returns true if DOM element e contains CSS class c, else
     false.
  */
  dom.hasClass = function(e,c){
    return (e && e.classList) ? e.classList.contains(c) : false;
  };

  /**
     Each argument after the first may be a single DOM element or a
     container of them with a forEach() method. All such elements are
     appended, in the given order, to the dest element using
     dom.append(dest,theElement). Thus the 2nd and susequent arguments
     may be any type supported as the 2nd argument to that function.

     Returns dest.
  */
  dom.moveTo = function(dest,e){
    const n = arguments.length;
    var i = 1;
    const self = this;
    for( ; i < n; ++i ){
      e = arguments[i];
      this.append(dest, e);
    }
    return dest;
  };
  /**
     Each argument after the first may be a single DOM element
     or a container of them with a forEach() method. For each
     DOM element argument, all children of that DOM element
     are moved to dest (via appendChild()). For each list argument,
     each entry in the list is assumed to be a DOM element and is
     appended to dest.

     dest may be an Array, in which case each child is pushed
     into the array and removed from its current parent element.

     All children are appended in the given order.

     Returns dest.
  */
  dom.moveChildrenTo = function f(dest,e){
    if(!f.mv){
      f.mv = function(d,v){
        if(d instanceof Array){
          d.push(v);
          if(v.parentNode) v.parentNode.removeChild(v);
        }
        else d.appendChild(v);
      };
    }
    const n = arguments.length;
    var i = 1;
    for( ; i < n; ++i ){
      e = arguments[i];
      if(!e){
        console.warn("Achtung: dom.moveChildrenTo() passed a falsy value at argument",i,"of",
                     arguments,arguments[i]);
        continue;
      }
      if(e.forEach){
        e.forEach((x)=>f.mv(dest, x));
      }else{
        while(e.firstChild){
          f.mv(dest, e.firstChild);
        }
      }
    }
    return dest;
  };

  /**
     Adds each argument (DOM Elements) after the first to the
     DOM immediately before the first argument (in the order
     provided), then removes the first argument from the DOM.
     Returns void.

     If any argument beyond the first has a forEach method, that
     method is used to recursively insert the collection's
     contents before removing the first argument from the DOM.
  */
  dom.replaceNode = function f(old,nu){
    var i = 1, n = arguments.length;
    ++f.counter;
    try {
      for( ; i < n; ++i ){
        const e = arguments[i];
        if(e.forEach){
          e.forEach((x)=>f.call(this,old,e));
          continue;
        }
        old.parentNode.insertBefore(e, old);
      }
    }
    finally{
      --f.counter;
    }
    if(!f.counter){
      old.parentNode.removeChild(old);
    }
  };
  dom.replaceNode.counter = 0;
  /**
     Two args == getter: (e,key), returns value

     Three or more == setter: (e,key,val[...,keyN,valN]), returns
     e. If val===null or val===undefined then the attribute is
     removed. If (e) has a forEach method then this routine is applied
     to each element of that collection via that method. Each pair of
     keys/values is applied to all elements designated by the first
     argument.
  */
  dom.attr = function f(e){
    if(2===arguments.length) return e.getAttribute(arguments[1]);
    const a = argsToArray(arguments);
    if(e.forEach){ /* Apply to all elements in the collection */
      e.forEach(function(x){
        a[0] = x;
        f.apply(f,a);
      });
      return e;
    }
    a.shift(/*element(s)*/);
    while(a.length){
      const key = a.shift(), val = a.shift();
      if(null===val || undefined===val){
        e.removeAttribute(key);
      }else{
        e.setAttribute(key,val);
      }
    }
    return e;
  };

  const enableDisable = function f(enable){
    var i = 1, n = arguments.length;
    for( ; i < n; ++i ){
      let e = arguments[i];
      if(e.forEach){
        e.forEach((x)=>f(enable,x));
      }else{
        e.disabled = !enable;
      }
    }
    return arguments[1];
  };

  /**
     Enables (by removing the "disabled" attribute) each element
     (HTML DOM element or a collection with a forEach method)
     and returns the first argument.
  */
  dom.enable = function(e){
    const args = argsToArray(arguments);
    args.unshift(true);
    return enableDisable.apply(this,args);
  };
  /**
     Disables (by setting the "disabled" attribute) each element
     (HTML DOM element or a collection with a forEach method)
     and returns the first argument.
  */
  dom.disable = function(e){
    const args = argsToArray(arguments);
    args.unshift(false);
    return enableDisable.apply(this,args);
  };

  /**
     A proxy for document.querySelector() which throws if
     selection x is not found. It may optionally be passed an
     "origin" object as its 2nd argument, which restricts the
     search to that branch of the tree.
  */
  dom.selectOne = function(x,origin){
    var src = origin || document,
        e = src.querySelector(x);
    if(!e){
      e = new Error("Cannot find DOM element: "+x);
      console.error(e, src);
      throw e;
    }
    return e;
  };

  /**
     "Blinks" the given element a single time for the given number of
     milliseconds, defaulting (if the 2nd argument is falsy or not a
     number) to flashOnce.defaultTimeMs. If a 3rd argument is passed
     in, it must be a function, and it gets called at the end of the
     asynchronous flashing processes.

     This will only activate once per element during that timeframe -
     further calls will become no-ops until the blink is
     completed. This routine adds a dataset member to the element for
     the duration of the blink, to allow it to block multiple blinks.

     If passed 2 arguments and the 2nd is a function, it behaves as if
     it were called as (arg1, undefined, arg2).

     Returns e, noting that the flash itself is asynchronous and may
     still be running, or not yet started, when this function returns.
  */
  dom.flashOnce = function f(e,howLongMs,afterFlashCallback){
    if(e.dataset.isBlinking){
      return;
    }
    if(2===arguments.length && 'function' ===typeof howLongMs){
      afterFlashCallback = howLongMs;
      howLongMs = f.defaultTimeMs;
    }
    if(!howLongMs || 'number'!==typeof howLongMs){
      howLongMs = f.defaultTimeMs;
    }
    e.dataset.isBlinking = true;
    const transition = e.style.transition;
    e.style.transition = "opacity "+howLongMs+"ms ease-in-out";
    const opacity = e.style.opacity;
    e.style.opacity = 0;
    setTimeout(function(){
      e.style.transition = transition;
      e.style.opacity = opacity;
      delete e.dataset.isBlinking;
      if(afterFlashCallback) afterFlashCallback();
    }, howLongMs);
    return e;
  };
  dom.flashOnce.defaultTimeMs = 400;
  /**
     A DOM event handler which simply passes event.target
     to dom.flashOnce().
  */
  dom.flashOnce.eventHandler = (event)=>dom.flashOnce(event.target)

  /**
     This variant of flashOnce() flashes the element e n times
     for a duration of howLongMs milliseconds then calls the
     afterFlashCallback() callback. It may also be called with 2
     or 3 arguments, in which case:

     2 arguments: default flash time and no callback.

     3 arguments: 3rd may be a flash delay time or a callback
     function.

     Returns this object but the flashing is asynchronous.

     Depending on system load and related factors, a multi-flash
     animation might stutter and look suboptimal.
  */
  dom.flashNTimes = function(e,n,howLongMs,afterFlashCallback){
    const args = argsToArray(arguments);
    args.splice(1,1);
    if(arguments.length===3 && 'function'===typeof howLongMs){
      afterFlashCallback = howLongMs;
      howLongMs = args[1] = this.flashOnce.defaultTimeMs;
    }else if(arguments.length<3){
      args[1] = this.flashOnce.defaultTimeMs;
    }
    n = +n;
    const self = this;
    const cb = args[2] = function f(){
      if(--n){
        setTimeout(()=>self.flashOnce(e, howLongMs, f),
                   howLongMs+(howLongMs*0.1)/*we need a slight gap here*/);
      }else if(afterFlashCallback){
        afterFlashCallback();
      }
    };
    this.flashOnce.apply(this, args);
    return this;
  };

  /**
     Adds the given CSS class or array of CSS classes to the given
     element or forEach-capable list of elements for howLongMs, then
     removes it. If afterCallack is a function, it is called after the
     CSS class is removed from all elements. If called with 3
     arguments and the 3rd is a function, the 3rd is treated as a
     callback and the default time (addClassBriefly.defaultTimeMs) is
     used. If called with only 2 arguments, a time of
     addClassBriefly.defaultTimeMs is used.

     Passing a value of 0 for howLongMs causes the default value
     to be applied.

     Returns this object but the CSS removal is asynchronous.
  */
  dom.addClassBriefly = function f(e, className, howLongMs, afterCallback){
    if(arguments.length<4 && 'function'===typeof howLongMs){
      afterCallback = howLongMs;
      howLongMs = f.defaultTimeMs;
    }else if(arguments.length<3 || !+howLongMs){
      howLongMs = f.defaultTimeMs;
    }
    this.addClass(e, className);
    setTimeout(function(){
      dom.removeClass(e, className);
      if(afterCallback) afterCallback();
    }, howLongMs);
    return this;
  };
  dom.addClassBriefly.defaultTimeMs = 1000;

  /**
     Attempts to copy the given text to the system clipboard. Returns
     true if it succeeds, else false.
  */
  dom.copyTextToClipboard = function(text){
    if( window.clipboardData && window.clipboardData.setData ){
      window.clipboardData.setData('Text',text);
      return true;
    }else{
      const x = document.createElement("textarea");
      x.style.position = 'fixed';
      x.value = text;
      document.body.appendChild(x);
      x.select();
      var rc;
      try{
        document.execCommand('copy');
        rc = true;
      }catch(err){
        rc = false;
      }finally{
        document.body.removeChild(x);
      }
      return rc;
    }
  };

  /**
     Copies all properties from the 2nd argument (a plain object) into
     the style member of the first argument (DOM element or a
     forEach-capable list of elements). If the 2nd argument is falsy
     or empty, this is a no-op.

     Returns its first argument.
  */
  dom.copyStyle = function f(e, style){
    if(e.forEach){
      e.forEach((x)=>f(x, style));
      return e;
    }
    if(style){
      let k;
      for(k in style){
        if(style.hasOwnProperty(k)) e.style[k] = style[k];
      }
    }
    return e;
  };

  /**
     Given a DOM element, this routine measures its "effective
     height", which is the bounding top/bottom range of this element
     and all of its children, recursively. For some DOM structure
     cases, a parent may have a reported height of 0 even though
     children have non-0 sizes.

     Returns 0 if !e or if the element really has no height.
  */
  dom.effectiveHeight = function f(e){
    if(!e) return 0;
    if(!f.measure){
      f.measure = function callee(e, depth){
        if(!e) return;
        const m = e.getBoundingClientRect();
        if(0===depth){
          callee.top = m.top;
          callee.bottom = m.bottom;
        }else{
          callee.top = m.top ? Math.min(callee.top, m.top) : callee.top;
          callee.bottom = Math.max(callee.bottom, m.bottom);
        }
        Array.prototype.forEach.call(e.children,(e)=>callee(e,depth+1));
        if(0===depth){
          //console.debug("measure() height:",e.className, callee.top, callee.bottom, (callee.bottom - callee.top));
          f.extra += callee.bottom - callee.top;
        }
        return f.extra;
      };
    }
    f.extra = 0;
    f.measure(e,0);
    return f.extra;
  };

  /**
     Parses a string as HTML.

     Usages:

     Array (htmlString)
     DOMElement (DOMElement target, htmlString)

     The first form parses the string as HTML and returns an Array of
     all elements parsed from it. If string is falsy then it returns
     an empty array.

     The second form parses the HTML string and appends all elements
     to the given target element using dom.append(), then returns the
     first argument.

     Caveats:

     - It expects a partial HTML document as input, not a full HTML
     document with a HEAD and BODY tags. Because of how DOMParser
     works, only children of the parsed document's (virtual) body are
     acknowledged by this routine.
  */
  dom.parseHtml = function(){
    let childs, string, tgt;
    if(1===arguments.length){
      string = arguments[0];
    }else if(2==arguments.length){
      tgt = arguments[0];
      string  = arguments[1];
    }
    if(string){
      const newNode = new DOMParser().parseFromString(string, 'text/html');
      childs = newNode.documentElement.querySelector('body');
      childs = childs ? Array.prototype.slice.call(childs.childNodes, 0) : [];
      /* ^^^ we need a clone of the list because reparenting them
         modifies a NodeList they're in. */
    }else{
      childs = [];
    }
    return tgt ? this.moveTo(tgt, childs) : childs;
  };

  /**
     Sets up pseudo-automatic content preview handling between a
     source element (typically a TEXTAREA) and a target rendering
     element (typically a DIV). The selector argument must be one of:

     - A single DOM element
     - A collection of DOM elements with a forEach method.
     - A CSS selector

     Each element in the collection must have the following data
     attributes:

     - data-f-preview-from: is either a DOM element id, WITH a leading
     '#' prefix, or the name of a method (see below). If it's an ID,
     the DOM element must support .value to get the content.

     - data-f-preview-to: the DOM element id of the target "previewer"
       element, WITH a leading '#', or the name of a method (see below).

     - data-f-preview-via: the name of a method (see below).

     - OPTIONAL data-f-preview-as-text: a numeric value. Explained below.

     Each element gets a click handler added to it which does the
     following:

     1) Reads the content from its data-f-preview-from element or, if
     that property refers to a method, calls the method without
     arguments and uses its result as the content.

     2) Passes the content to
     methodNamespace[f-data-post-via](content,callback). f-data-post-via
     is responsible for submitting the preview HTTP request, including
     any parameters the request might require. When the response
     arrives, it must pass the content of the response to its 2nd
     argument, an auto-generated callback installed by this mechanism
     which...

     3) Assigns the response text to the data-f-preview-to element or
     passes it to the function
     methodNamespace[f-data-preview-to](content), as appropriate. If
     data-f-preview-to is a DOM element and data-f-preview-as-text is
     '0' (the default) then the target elements contents are replaced
     with the given content as HTML, else the content is assigned to
     the target's textContent property. (Note that this routine uses
     DOMParser, rather than assignment to innerHTML, to apply
     HTML-format content.)

     The methodNamespace (2nd argument) defaults to fossil.page, and
     any method-name data properties, e.g. data-f-preview-via and
     potentially data-f-preview-from/to, must be a single method name,
     not a property-access-style string. e.g. "myPreview" is legal but
     "foo.myPreview" is not (unless, of course, the method is actually
     named "foo.myPreview" (which is legal but would be
     unconventional)). All such methods are called with
     methodNamespace as their "this".

     An example...

     First an input button:

     <button id='test-preview-connector'
       data-f-preview-from='#fileedit-content-editor' // elem ID or method name
       data-f-preview-via='myPreview' // method name
       data-f-preview-to='#fileedit-tab-preview-wrapper' // elem ID or method name
     >Preview update</button>

     And a sample data-f-preview-via method:

     fossil.page.myPreview = function(content,callback){
       const fd = new FormData();
       fd.append('foo', ...);
       fossil.fetch('preview_forumpost',{
         payload: fd,
         onload: callback,
         onerror: (e)=>{ // only if app-specific handling is needed
           fossil.fetch.onerror(e); // default impl
           ... any app-specific error reporting ...
         }
       });
     };

     Then connect the parts with:

     fossil.connectPagePreviewers('#test-preview-connector');

     Note that the data-f-preview-from, data-f-preview-via, and
     data-f-preview-to selector are not resolved until the button is
     actually clicked, so they need not exist in the DOM at the
     instant when the connection is set up, so long as they can be
     resolved when the preview-refreshing element is clicked.

     Maintenance reminder: this method is not strictly part of
     fossil.dom, but is in its file because it needs access to
     dom.parseHtml() to avoid an innerHTML assignment and all code
     which uses this routine also needs fossil.dom.
  */
  F.connectPagePreviewers = function f(selector,methodNamespace){
    if('string'===typeof selector){
      selector = document.querySelectorAll(selector);
    }else if(!selector.forEach){
      selector = [selector];
    }
    if(!methodNamespace){
      methodNamespace = F.page;
    }
    selector.forEach(function(e){
      e.addEventListener(
        'click', function(r){
          const eTo = '#'===e.dataset.fPreviewTo[0]
                ? document.querySelector(e.dataset.fPreviewTo)
                : methodNamespace[e.dataset.fPreviewTo],
                eFrom = '#'===e.dataset.fPreviewFrom[0]
                ? document.querySelector(e.dataset.fPreviewFrom)
                : methodNamespace[e.dataset.fPreviewFrom],
                asText = +(e.dataset.fPreviewAsText || 0);
          eTo.textContent = "Fetching preview...";
          methodNamespace[e.dataset.fPreviewVia](
            (eFrom instanceof Function ? eFrom.call(methodNamespace) : eFrom.value),
            function(r){
              if(eTo instanceof Function) eTo.call(methodNamespace, r||'');
              else if(!r){
                dom.clearElement(eTo);
              }else if(asText){
                eTo.textContent = r;
              }else{
                dom.parseHtml(dom.clearElement(eTo), r);
              }
            }
          );
        }, false
      );
    });
    return this;
  }/*F.connectPagePreviewers()*/;

  return F.dom = dom;
})(window.fossil);
Added src/fossil.fetch.js.




















































































































































































































































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"use strict";
/**
   Requires that window.fossil has already been set up.
*/
(function(namespace){
const fossil = namespace;
  /**
   fetch() is an HTTP request/response mini-framework
   similar (but not identical) to the not-quite-ubiquitous
   window.fetch().

   JS usages:

   fossil.fetch( URI [, onLoadCallback] );

   fossil.fetch( URI [, optionsObject = {}] );

   Noting that URI must be relative to the top of the repository and
   should not start with a slash (if it does, it is stripped). It gets
   the equivalent of "%R/" prepended to it.

   The optionsObject may be an onload callback or an object with any
   of these properties:

   - onload: callback(responseData) (default = output response to the
   console). In the context of the callback, the options object is
   "this", noting that this call may have amended the options object
   with state other than what the caller provided.

   - onerror: callback(Error object) (default = output error message
   to console.error() and fossil.error()). Triggered if the request
   generates any response other than HTTP 200, suffers a connection
   error or timeout while awaiting a response, or if the onload()
   handler throws an exception. In the context of the callback, the
   options object is "this". Note that this function is intended to be
   used solely for error reporting, not error recovery. Because
   onerror() may be called if onload() throws, it is up to the caller
   to ensure that their onerror() callback references only state which
   is valid in such a case.

   - method: 'POST' | 'GET' (default = 'GET'). CASE SENSITIVE!

   - payload: anything acceptable by XHR2.send(ARG) (DOMString,
   Document, FormData, Blob, File, ArrayBuffer), or a plain object or
   array, either of which gets JSON.stringify()'d. If payload is set
   then the method is automatically set to 'POST'. By default XHR2
   will set the content type based on the payload type. If an
   object/array is converted to JSON, the contentType option is
   automatically set to 'application/json', and if JSON.stringify() of
   that value fails then the exception is propagated to this
   function's caller.

   - contentType: Optional request content type when POSTing. Ignored
   if the method is not 'POST'.

   - responseType: optional string. One of ("text", "arraybuffer",
   "blob", or "document") (as specified by XHR2). Default = "text".
   As an extension, it supports "json", which tells it that the
   response is expected to be text and that it should be JSON.parse()d
   before passing it on to the onload() callback. If parsing of such
   an object fails, the onload callback is not called, and the
   onerror() callback is passed the exception from the parsing error.

   - urlParams: string|object. If a string, it is assumed to be a
   URI-encoded list of params in the form "key1=val1&key2=val2...",
   with NO leading '?'.  If it is an object, all of its properties get
   converted to that form. Either way, the parameters get appended to
   the URL before submitting the request.

   - responseHeaders: If true, the onload() callback is passed an
   additional argument: a map of all of the response headers. If it's
   a string value, the 2nd argument passed to onload() is instead the
   value of that single header. If it's an array, it's treated as a
   list of headers to return, and the 2nd argument is a map of those
   header values. When a map is passed on, all of its keys are
   lower-cased. When a given header is requested and that header is
   set multiple times, their values are (per the XHR docs)
   concatenated together with ", " between them.

   - beforesend/aftersend: optional callbacks which are called
   without arguments immediately before the request is submitted
   and immediately after it is received, regardless of success or
   error. In the context of the callback, the options object is
   the "this". These can be used to, e.g., keep track of in-flight
   requests and update the UI accordingly, e.g. disabling/enabling
   DOM elements. Any exceptions thrown in an beforesend are passed
   to the onerror() handler and cause the fetch() to prematurely
   abort. Exceptions thrown in aftersend are currently silently
   ignored (feature or bug?).

   - timeout: integer in milliseconds specifying the XHR timeout
   duration. Default = fossil.fetch.timeout.

   When an options object does not provide
   onload/onerror/beforesend/aftersend handlers of its own, this
   function falls back to defaults which are member properties of this
   function with the same name, e.g. fossil.fetch.onload(). The
   default onload/onerror implementations route the data through the
   dev console and (for onerror()) through fossil.error(). The default
   beforesend/aftersend are no-ops. Individual pages may overwrite
   those members to provide default implementations suitable for the
   page's use, e.g. keeping track of how many in-flight ajax requests
   are pending.

   Note that this routine may add properties to the 2nd argument, so
   that instance should not be kept around for later use.

   Returns this object, noting that the XHR request is asynchronous,
   and still in transit (or has yet to be sent) when that happens.
*/
fossil.fetch = function f(uri,opt){
  const F = fossil;
  if(!f.onload){
    f.onload = (r)=>console.debug('fossil.fetch() XHR response:',r);
  }
  if(!f.onerror){
    f.onerror = function(e/*exception*/){
      console.error("fossil.fetch() XHR error:",e);
      if(e instanceof Error) F.error('Exception:',e);
      else F.error("Unknown error in handling of XHR request.");
    };
  }
  if(!f.parseResponseHeaders){
    f.parseResponseHeaders = function(h){
      const rc = {};
      if(!h) return rc;
      const ar = h.trim().split(/[\r\n]+/);
      ar.forEach(function(line) {
        const parts = line.split(': ');
        const header = parts.shift();
        const value = parts.join(': ');
        rc[header.toLowerCase()] = value;
      });
      return rc;
    };
  }
  if('/'===uri[0]) uri = uri.substr(1);
  if(!opt) opt = {};
  else if('function'===typeof opt) opt={onload:opt};
  if(!opt.onload) opt.onload = f.onload;
  if(!opt.onerror) opt.onerror = f.onerror;
  if(!opt.beforesend) opt.beforesend = f.beforesend;
  if(!opt.aftersend) opt.aftersend = f.aftersend;
  let payload = opt.payload, jsonResponse = false;
  if(undefined!==payload){
    opt.method = 'POST';
    if(!(payload instanceof FormData)
       && !(payload instanceof Document)
       && !(payload instanceof Blob)
       && !(payload instanceof File)
       && !(payload instanceof ArrayBuffer)
       && ('object'===typeof payload
           || payload instanceof Array)){
      payload = JSON.stringify(payload);
      opt.contentType = 'application/json';
    }
  }
  const url=[f.urlTransform(uri,opt.urlParams)],
        x=new XMLHttpRequest();
  if('json'===opt.responseType){
    /* 'json' is an extension to the supported XHR.responseType
       list. We use it as a flag to tell us to JSON.parse()
       the response. */
    jsonResponse = true;
    x.responseType = 'text';
  }else{
    x.responseType = opt.responseType||'text';
  }
  x.ontimeout = function(){
    try{opt.aftersend()}catch(e){/*ignore*/}
    opt.onerror(new Error("XHR timeout of "+x.timeout+"ms expired."));
  };
  x.onreadystatechange = function(){
    if(XMLHttpRequest.DONE !== x.readyState) return;
    try{opt.aftersend()}catch(e){/*ignore*/}
    if(false && 0===x.status){
      /* For reasons unknown, we _sometimes_ trigger x.status==0 in FF
         when the /chat page starts up, but not in Chrome nor in other
         apps. Insofar as has been determined, this happens before a
         request is actually sent and it appears to have no
         side-effects on the app other than to generate an error
         (i.e. no requests/responses are missing). This is a silly
         workaround which may or may not bite us later. If so, it can
         be removed at the cost of an unsightly console error message
         in FF. */
      return;
    }
    if(200!==x.status){
      let err;
      try{
        const j = JSON.parse(x.response);
        if(j.error) err = new Error(j.error);
      }catch(ex){/*ignore*/}
      opt.onerror(err || new Error("HTTP response status "+x.status+"."));
      return;
    }
    const orh = opt.responseHeaders;
    let head;
    if(true===orh){
      head = f.parseResponseHeaders(x.getAllResponseHeaders());
    }else if('string'===typeof orh){
      head = x.getResponseHeader(orh);
    }else if(orh instanceof Array){
      head = {};
      orh.forEach((s)=>{
        if('string' === typeof s) head[s.toLowerCase()] = x.getResponseHeader(s);
      });
    }
    try{
      const args = [(jsonResponse && x.response)
                    ? JSON.parse(x.response) : x.response];
      if(head) args.push(head);
      opt.onload.apply(opt, args);
    }catch(e){
      opt.onerror(e);
    }
  };
  try{opt.beforesend()}
  catch(e){
    opt.onerror(e);
    return;
  }
  x.open(opt.method||'GET', url.join(''), true);
  if('POST'===opt.method && 'string'===typeof opt.contentType){
    x.setRequestHeader('Content-Type',opt.contentType);
  }
  x.timeout = +opt.timeout || f.timeout;
  if(undefined!==payload) x.send(payload);
  else x.send();
  return this;
};

/**
   urlTransform() must refer to a function which accepts a relative path
   to the same site as fetch() is served from and an optional set of
   URL parameters to pass with it (in the form a of a string
   ("a=b&c=d...") or an object of key/value pairs (which it converts
   to such a string), and returns the resulting URL or URI as a string.
*/
fossil.fetch.urlTransform = (u,p)=>fossil.repoUrl(u,p);
fossil.fetch.beforesend = function(){};
fossil.fetch.aftersend = function(){};
fossil.fetch.timeout = 15000/* Default timeout, in ms. */;
})(window.fossil);
Added src/fossil.numbered-lines.js.































































































































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(function callee(arg){
  /*
    JS counterpart of info.c:output_text_with_line_numbers()
    which ties an event handler to the line numbers to allow
    selection of individual lines or ranges.

    Requires: fossil.bootstrap, fossil.dom, fossil.popupwidget,
    fossil.copybutton
  */
  var tbl = arg || document.querySelectorAll('table.numbered-lines');
  if(tbl && !arg){
    if(tbl.length>1){ /* multiple query results: recurse */
      tbl.forEach( (t)=>callee(t) );
      return;
    }else{/* single query result */
      tbl = tbl[0];
    }
  }
  if(!tbl) return /* no matching elements */;
  const F = window.fossil, D = F.dom;
  const tdLn = tbl.querySelector('td.line-numbers');
  const urlArgsRaw = (window.location.search||'?')
      .replace(/&?\budc=[^&]*/,'') /* "update display prefs cookie" */
      .replace(/&?\bln=[^&]*/,'') /* inbound line number/range */
      .replace('?&','?');
  var urlArgsDecoded = urlArgsRaw;
  try{urlArgsDecoded = decodeURIComponent(urlArgsRaw);}
  catch{}
  const lineState = { urlArgs: urlArgsDecoded, start: 0, end: 0 };
  const lineTip = new F.PopupWidget({
    style: {
      cursor: 'pointer'
    },
    refresh: function(){
      const link = this.state.link;
      D.clearElement(link);
      if(lineState.start){
        const ls = [lineState.start];
        if(lineState.end) ls.push(lineState.end);
        link.dataset.url = (
          window.location.toString().split('?')[0]
            + lineState.urlArgs + '&ln='+ls.join('-')
        );
        D.append(
          D.clearElement(link),
          ' Copy link to '+(
            ls.length===1 ? 'line ' : 'lines '
          )+ls.join('-')
        );
      }else{
        D.append(link, "No lines selected.");
      }
    },
    init: function(){
      const e = this.e;
      const btnCopy = D.span(),
            link = D.span();
      this.state = {link};
      F.copyButton(btnCopy,{
        copyFromElement: link,
        extractText: ()=>link.dataset.url,
        oncopy: (ev)=>{
          D.flashOnce(ev.target, undefined, ()=>lineTip.hide());
          // arguably too snazzy: F.toast.message("Copied link to clipboard.");
        }
      });
      this.e.addEventListener('click', ()=>btnCopy.click(), false);
      D.append(this.e, btnCopy, link)
    }
  });

  tbl.addEventListener('click', ()=>lineTip.hide(), true);
  
  tdLn.addEventListener('click', function f(ev){
    if('SPAN'!==ev.target.tagName) return;
    else if('number' !== typeof f.mode){
      f.mode = 0 /*0=none selected, 1=1 selected, 2=2 selected*/;
      f.spans = tdLn.querySelectorAll('span');
      f.selected = tdLn.querySelectorAll('span.selected-line');
      f.unselect = (e)=>D.removeClass(e, 'selected-line','start','end');
    }
    ev.stopPropagation();
    const ln = +ev.target.innerText;
    if(2===f.mode){/*Reset selection*/
      f.mode = 0;
    }
    if(0===f.mode){/*Select single line*/
      lineState.end = 0;
      lineState.start = ln;
      f.mode = 1;
    }else if(1===f.mode){
      if(ln === lineState.start){/*Unselect line*/
        lineState.start = 0;
        f.mode = 0;
      }else{/*Select range*/
        if(ln<lineState.start){
          lineState.end = lineState.start;
          lineState.start = ln;
        }else{
          lineState.end = ln;
        }
        f.mode = 2;
      }
    }
    if(f.selected){/*Unmark previously-selected lines.*/
      f.selected.forEach(f.unselect);
      f.selected = undefined;
    }
    if(0===f.mode){
      lineTip.hide();
    }else{/*Mark selected lines*/
      const rect = ev.target.getBoundingClientRect();
      f.selected = [];
      if(f.spans.length>=lineState.start){
        let i = lineState.start, end = lineState.end || lineState.start, span = f.spans[i-1];
        for( ; i<=end && span; span = f.spans[i++] ){
          span.classList.add('selected-line');
          f.selected.push(span);
          if(i===lineState.start) span.classList.add('start');
          if(i===end) span.classList.add('end');
        }
      }
      lineTip.refresh().show(rect.right+3, rect.top-4);
    }
  }, false);
  
})();
Added src/fossil.page.brlist.js.










































































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/*
 * This script adds multiselect facility for the list of branches.
 *
 * Some info on 'const':
 *   https://caniuse.com/const
 *   https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const#browser_compatibility
 *
 * According to MDN 'const' requires Android's WebView 37,
 * which may not be available.
 * For the time being, continueing without 'const' and 'indexOf'
 * (but that may be reconsidered later).
*/
window.addEventListener( 'load', function() {

var submenu = document.querySelector("div.submenu");
var anchor = document.createElement("A");
var brlistDataObj = document.getElementById("brlist-data");
var brlistDataTxt = brlistDataObj.textContent || brlistDataObj.innerText;
var brlistData = JSON.parse(brlistDataTxt);
anchor.classList.add("label");
anchor.classList.add("timeline-link");
anchor.href = brlistData.timelineUrl;
var prefix   = anchor.href.toString() + "?ms=brlist&t=";
submenu.insertBefore(anchor,submenu.childNodes[0]);

var amendAnchor = function( selected ){
  if( selected.length == 0 ){
    anchor.classList.remove('selected');
    anchor.href = prefix;
    return;
  }
  re = selected.join(",");
  try{re = encodeURIComponent(re);}
  catch{console.log("encodeURIComponent() failed for ",re);}
  anchor.href = prefix + re;
  anchor.innerHTML = "View " + selected.length +
                     ( selected.length > 1 ? " branches" : " branch" );
  anchor.classList.add('selected');
}

var onChange = function( event ){
  var cbx = event.target;
  var tr  = cbx.parentElement.parentElement;
  var tag = cbx.parentElement.children[0].innerText;
  var re  = anchor.href.substr(prefix.length);
  try{re  = decodeURIComponent(re);}
  catch{console.log("decodeURIComponent() failed for ",re);}
  var selected = ( re != "" ? re.split(",") : [] );
  if( cbx.checked ){
    selected.push(tag);
    tr.classList.add('selected');
  }
  else {
    tr.classList.remove('selected');
    for( var i = selected.length; --i >= 0 ;)
      if( selected[i] == tag )
        selected.splice(i,1);
  }
  amendAnchor( selected );
}

var stags = []; /* initially selected tags, not used above */
document.querySelectorAll("div.brlist > table td:first-child > input")
  .forEach( function( cbx ){
    cbx.onchange = onChange;
    cbx.disabled = false;
    if( cbx.checked ){
      stags.push(cbx.parentElement.children[0].innerText);
      cbx.parentElement.parentElement.classList.add('selected');
    }
  });
amendAnchor( stags );

}); // window.addEventListener( 'load' ...
Added src/fossil.page.chat.js.


































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/**
   This file contains the client-side implementation of fossil's /chat
   application.
*/
window.fossil.onPageLoad(function(){
  const F = window.fossil, D = F.dom;
  const E1 = function(selector){
    const e = document.querySelector(selector);
    if(!e) throw new Error("missing required DOM element: "+selector);
    return e;
  };

  /**
     Returns true if e is entirely within the bounds of the window's viewport.
  */
  const isEntirelyInViewport = function(e) {
    const rect = e.getBoundingClientRect();
    return (
      rect.top >= 0 &&
      rect.left >= 0 &&
      rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
      rect.right <= (window.innerWidth || document.documentElement.clientWidth)
    );
  };

  /**
     Returns true if e's on-screen position vertically overlaps that
     of element v's. Horizontal overlap is ignored (we don't need it
     for our case).
  */
  const overlapsElemView = function(e,v) {
    const r1 = e.getBoundingClientRect(),
          r2 = v.getBoundingClientRect();
    if(r1.top<=r2.bottom && r1.top>=r2.top) return true;
    else if(r1.bottom<=r2.bottom && r1.bottom>=r2.top) return true;
    return false;
  };

  const addAnchorTargetBlank = (e)=>D.attr(e, 'target','_blank');

  /**
     Returns an almost-ISO8601 form of Date object d.
  */
  const iso8601ish = function(d){
    return d.toISOString()
        .replace('T',' ').replace(/\.\d+/,'')
        .replace('Z', ' zulu');
  };
  const pad2 = (x)=>('0'+x).substr(-2);
  /** Returns the local time string of Date object d, defaulting
      to the current time. */
  const localTimeString = function ff(d){
    d || (d = new Date());
    return [
      d.getFullYear(),'-',pad2(d.getMonth()+1/*sigh*/),
      '-',pad2(d.getDate()),
      ' ',pad2(d.getHours()),':',pad2(d.getMinutes()),
      ':',pad2(d.getSeconds())
    ].join('');
  };

  (function(){
    let dbg = document.querySelector('#debugMsg');
    if(dbg){
      /* This can inadvertently influence our flexbox layouts, so move
         it out of the way. */
      D.append(document.body,dbg);
    }
  })();
  /* Returns a list of DOM elements which "frame" the chat UI. These
     elements are considered to _not_ be part of the chat UI and that
     info is used for sizing the chat UI. In chat-only mode, these are
     the elements that get hidden. */
  const GetFramingElements = function() {
    return document.querySelectorAll([
      "body > header",
      "body > nav.mainmenu",
      "body > footer",
      "#debugMsg"
    ].join(','));
  };
  const ForceResizeKludge = (function(){
    /* Workaround for Safari mayhem regarding use of vh CSS units....
       We tried to use vh units to set the content area size for the
       chat layout, but Safari chokes on that, so we calculate that
       height here: 85% when in "normal" mode and 95% in chat-only
       mode. Larger than ~95% is too big for Firefox on Android,
       causing the input area to move off-screen.

       While we're here, we also use this to cap the max-height
       of the input field so that pasting huge text does not scroll
       the upper area of the input widget off-screen. */
    const elemsToCount = GetFramingElements();
    const contentArea = E1('div.content');
    const bcl = document.body.classList;
    const resized = function f(){
      if(f.$disabled) return;
      const wh = window.innerHeight,
            com = bcl.contains('chat-only-mode');
      var ht;
      var extra = 0;
      if(com){
        ht = wh;
      }else{
        elemsToCount.forEach((e)=>e ? extra += D.effectiveHeight(e) : false);
        ht = wh - extra;
      }
      f.chat.e.inputX.style.maxHeight = (ht/2)+"px";
      /* ^^^^ this is a middle ground between having no size cap
         on the input field and having a fixed arbitrary cap. */;
      contentArea.style.height =
        contentArea.style.maxHeight = [
          "calc(", (ht>=100 ? ht : 100), "px",
          " - 0.65em"/*fudge value*/,")"
          /* ^^^^ hypothetically not needed, but both Chrome/FF on
             Linux will force scrollbars on the body if this value is
             too small; current value is empirically selected. */
        ].join('');
      if(false){
        console.debug("resized.",wh, extra, ht,
                      window.getComputedStyle(contentArea).maxHeight,
                      contentArea);
        console.debug("Set input max height to: ",
                      f.chat.e.inputX.style.maxHeight);
      }
    };
    resized.$disabled = true/*gets deleted when setup is finished*/;
    window.addEventListener('resize', F.debounce(resized, 250), false);
    return resized;
  })();
  fossil.FRK = ForceResizeKludge/*for debugging*/;
  const Chat = ForceResizeKludge.chat = (function(){
    const cs = { // the "Chat" object (result of this function)
      verboseErrors: false /* if true then certain, mostly extraneous,
                              error messages may be sent to the console. */,
      playedBeep: false /* used for the beep-once setting */,
      e:{/*map of certain DOM elements.*/
        messageInjectPoint: E1('#message-inject-point'),
        pageTitle: E1('head title'),
        loadOlderToolbar: undefined /* the load-posts toolbar (dynamically created) */,
        inputWrapper: E1("#chat-input-area"),
        inputElementWrapper: E1('#chat-input-line-wrapper'),
        fileSelectWrapper: E1('#chat-input-file-area'),
        viewMessages: E1('#chat-messages-wrapper'),
        btnSubmit: E1('#chat-button-submit'),
        btnAttach: E1('#chat-button-attach'),
        inputX: E1('#chat-input-field-x'),
        input1: E1('#chat-input-field-single'),
        inputM: E1('#chat-input-field-multi'),
        inputFile: E1('#chat-input-file'),
        contentDiv: E1('div.content'),
        viewConfig: E1('#chat-config'),
        viewPreview: E1('#chat-preview'),
        previewContent: E1('#chat-preview-content'),
        viewSearch: E1('#chat-search'),
        searchContent: E1('#chat-search-content'),
        btnPreview: E1('#chat-button-preview'),
        views: document.querySelectorAll('.chat-view'),
        activeUserListWrapper: E1('#chat-user-list-wrapper'),
        activeUserList: E1('#chat-user-list')
      },
      me: F.user.name,
      mxMsg: F.config.chat.initSize ? -F.config.chat.initSize : -50,
      mnMsg: undefined/*lowest message ID we've seen so far (for history loading)*/,
      pageIsActive: 'visible'===document.visibilityState,
      changesSincePageHidden: 0,
      notificationBubbleColor: 'white',
      totalMessageCount: 0, // total # of inbound messages
      //! Number of messages to load for the history buttons
      loadMessageCount: Math.abs(F.config.chat.initSize || 20),
      ajaxInflight: 0,
      usersLastSeen:{
        /* Map of user names to their most recent message time
           (JS Date object). Only messages received by the chat client
           are considered. */
        /* Reminder: to convert a Julian time J to JS:
           new Date((J - 2440587.5) * 86400000) */
      },
      filterState:{
        activeUser: undefined,
        match: function(uname){
          return this.activeUser===uname || !this.activeUser;
        }
      },
      /**
         Gets (no args) or sets (1 arg) the current input text field
         value, taking into account single- vs multi-line input. The
         getter returns a trim()'d string and the setter returns this
         object. As a special case, if arguments[0] is a boolean
         value, it behaves like a getter and, if arguments[0]===true
         it clears the input field before returning.
      */
      inputValue: function(/*string newValue | bool clearInputField*/){
        const e = this.inputElement();
        if(arguments.length && 'boolean'!==typeof arguments[0]){
          if(e.isContentEditable) e.innerText = arguments[0];
          else e.value = arguments[0];
          return this;
        }
        const rc = e.isContentEditable ? e.innerText : e.value;
        if( true===arguments[0] ){
          if(e.isContentEditable) e.innerText = '';
          else e.value = '';
        }
        return rc && rc.trim();
      },
      /** Asks the current user input field to take focus. Returns this. */
      inputFocus: function(){
        this.inputElement().focus();
        return this;
      },
      /** Returns the current message input element. */
      inputElement: function(){
        return this.e.inputFields[this.e.inputFields.$currentIndex];
      },
      /** Enables (if yes is truthy) or disables all elements in
       * this.disableDuringAjax. */
      enableAjaxComponents: function(yes){
        D[yes ? 'enable' : 'disable'](this.disableDuringAjax);
        return this;
      },
      /* Must be called before any API is used which starts ajax traffic.
         If this call represents the currently only in-flight ajax request,
         all DOM elements in this.disableDuringAjax are disabled.
         We cannot do this via a central API because (1) window.fetch()'s
         Promise-based API seemingly makes that impossible and (2) the polling
         technique holds ajax requests open for as long as possible. A call
         to this method obligates the caller to also call ajaxEnd().

         This must NOT be called for the chat-polling API except, as a
         special exception, the very first one which fetches the
         initial message list.
      */
      ajaxStart: function(){
        if(1===++this.ajaxInflight){
          this.enableAjaxComponents(false);
        }
      },
      /* Must be called after any ajax-related call for which
         ajaxStart() was called, regardless of success or failure. If
         it was the last such call (as measured by calls to
         ajaxStart() and ajaxEnd()), elements disabled by a prior call
         to ajaxStart() will be re-enabled. */
      ajaxEnd: function(){
        if(0===--this.ajaxInflight){
          this.enableAjaxComponents(true);
        }
      },
      disableDuringAjax: [
        /* List of DOM elements disable while ajax traffic is in
           transit. Must be populated before ajax starts. We do this
           to avoid various race conditions in the UI and long-running
           network requests. */
      ],
      /** Either scrolls .message-widget element eMsg into view
          immediately or, if it represents an inlined image, delays
          the scroll until the image is loaded, at which point it will
          scroll to either the newest message, if one is set or to
          eMsg (the liklihood is good, at least on initial page load,
          that the the image won't be loaded until other messages have
          been injected). */
      scheduleScrollOfMsg: function(eMsg){
        if(1===+eMsg.dataset.hasImage){
          eMsg.querySelector('img').addEventListener(
            'load', ()=>(this.e.newestMessage || eMsg).scrollIntoView(false)
          );
        }else{
          eMsg.scrollIntoView(false);
        }
        return this;
      },
      /* Injects DOM element e as a new row in the chat, at the oldest
         end of the list if atEnd is truthy, else at the newest end of
         the list. */
      injectMessageElem: function f(e, atEnd){
        const mip = atEnd ? this.e.loadOlderToolbar : this.e.messageInjectPoint,
              holder = this.e.viewMessages,
              prevMessage = this.e.newestMessage;
        if(!this.filterState.match(e.dataset.xfrom)){
          e.classList.add('hidden');
        }
        if(atEnd){
          const fe = mip.nextElementSibling;
          if(fe) mip.parentNode.insertBefore(e, fe);
          else D.append(mip.parentNode, e);
        }else{
          D.append(holder,e);
          this.e.newestMessage = e;
        }
        if(!atEnd && !this._isBatchLoading
           && e.dataset.xfrom!==this.me
           && (prevMessage
               ? !this.messageIsInView(prevMessage)
               : false)){
          /* If a new non-history message arrives while the user is
             scrolled elsewhere, do not scroll to the latest
             message, but gently alert the user that a new message
             has arrived. */
          if(!f.btnDown){
            f.btnDown = D.button("⇣⇣⇣");
            f.btnDown.addEventListener('click',()=>this.scrollMessagesTo(1),false);
          }
          F.toast.message(f.btnDown," New message has arrived.");
        }else if(!this._isBatchLoading && e.dataset.xfrom===Chat.me){
          this.scheduleScrollOfMsg(e);
        }else if(!this._isBatchLoading){
          /* When a message from someone else arrives, we have to
             figure out whether or not to scroll it into view. Ideally
             we'd just stuff it in the UI and let the flexbox layout
             DTRT, but Safari has expressed, in no uncertain terms,
             some disappointment with that approach, so we'll
             heuristicize it: if the previous last message is in view,
             assume the user is at or near the input element and
             scroll this one into view. If that message is NOT in
             view, assume the user is up reading history somewhere and
             do NOT scroll because doing so would interrupt
             them. There are middle grounds here where the user will
             experience a slight UI jolt, but this heuristic mostly
             seems to work out okay. If there was no previous message,
             assume we don't have any messages yet and go ahead and
             scroll this message into view (noting that that scrolling
             is hypothetically a no-op in such cases).

             The wrench in these works are posts with IMG tags, as
             those images are loaded async and the element does not
             yet have enough information to know how far to scroll!
             For such cases we have to delay the scroll until the
             image loads (and we hope it does so before another
             message arrives).
          */
          if(1===+e.dataset.hasImage){
            e.querySelector('img').addEventListener('load',()=>e.scrollIntoView());
          }else if(!prevMessage || (prevMessage && isEntirelyInViewport(prevMessage))){
            e.scrollIntoView(false);
          }
        }
      },
      /** Returns true if chat-only mode is enabled. */
      isChatOnlyMode: ()=>document.body.classList.contains('chat-only-mode'),
      /**
         Enters (if passed a truthy value or no arguments) or leaves
         "chat-only" mode. That mode hides the page's header and
         footer, leaving only the chat application visible to the
         user.
      */
      chatOnlyMode: function f(yes){
        if(undefined === f.elemsToToggle){
          f.elemsToToggle = [];
          GetFramingElements().forEach((e)=>f.elemsToToggle.push(e));
        }
        if(!arguments.length) yes = true;
        if(yes === this.isChatOnlyMode()) return this;
        if(yes){
          D.addClass(f.elemsToToggle, 'hidden');
          D.addClass(document.body, 'chat-only-mode');
          document.body.scroll(0,document.body.height);
        }else{
          D.removeClass(f.elemsToToggle, 'hidden');
          D.removeClass(document.body, 'chat-only-mode');
        }
        ForceResizeKludge();
        return this;
      },
      /** Tries to scroll the message area to...
          <0 = top of the message list, >0 = bottom of the message list,
          0 == the newest message (normally the same position as >1).
      */
      scrollMessagesTo: function(where){
        if(where<0){
          Chat.e.viewMessages.scrollTop = 0;
        }else if(where>0){
          Chat.e.viewMessages.scrollTop = Chat.e.viewMessages.scrollHeight;
        }else if(Chat.e.newestMessage){
          Chat.e.newestMessage.scrollIntoView(false);
        }
      },
      toggleChatOnlyMode: function(){
        return this.chatOnlyMode(!this.isChatOnlyMode());
      },
      messageIsInView: function(e){
        return e ? overlapsElemView(e, this.e.viewMessages) : false;
      },
      settings:{
        get: (k,dflt)=>F.storage.get(k,dflt),
        getBool: (k,dflt)=>F.storage.getBool(k,dflt),
        set: function(k,v){
          F.storage.set(k,v);
          F.page.dispatchEvent('chat-setting',{key: k, value: v});
        },
        /* Toggles the boolean setting specified by k. Returns the
           new value.*/
        toggle: function(k){
          const v = this.getBool(k);
          this.set(k, !v);
          return !v;
        },
        addListener: function(setting, f){
          F.page.addEventListener('chat-setting', function(ev){
            if(ev.detail.key===setting) f(ev.detail);
          }, false);
        },
        /* Default values of settings. These are used for initializing
           the setting event listeners and config view UI. */
        defaults:{
          /* When on, inbound images are displayed inlined, else as a
             link to download the image. */
          "images-inline": !!F.config.chat.imagesInline,
          /* When on, ctrl-enter sends messages, else enter and
             ctrl-enter both send them. */
          "edit-ctrl-send": false,
          /* When on, the edit field starts as a single line and
             expands as the user types, and the relevant buttons are
             laid out in a compact form. When off, the edit field and
             buttons are larger. */
          "edit-compact-mode": true,
          /* See notes for this setting in fossil.page.wikiedit.js.
             Both /wikiedit and /fileedit share this persistent config
             option under the same storage key. */
          "edit-shift-enter-preview":
            F.storage.getBool('edit-shift-enter-preview', true),
          /* When on, sets the font-family on messages and the edit
             field to monospace. */
          "monospace-messages": false,
          /* When on, non-chat UI elements (page header/footer) are
             hidden */
          "chat-only-mode": false,
          /* When set to a URI, it is assumed to be an audio file,
             which gets played when new messages arrive. When true,
             the first entry in the audio file selection list will be
             used. */
          "audible-alert": true,
          /*
           */
          "beep-once": false,
          /* When on, show the list of "active" users - those from
             whom we have messages in the currently-loaded history
             (noting that deletions are also messages). */
          "active-user-list": false,
          /* When on, the [active-user-list] setting includes the
             timestamp of each user's most recent message. */
          "active-user-list-timestamps": false,
          /* When on, the [audible-alert] is played for one's own
             messages, else it is only played for other users'
             messages. */
          "alert-own-messages": false,
          /* "Experimental mode" input: use a contenteditable field
             for input. This is generally more comfortable to use,
             and more modern, than plain text input fields, but
             the list of browser-specific quirks and bugs is...
             not short. */
          "edit-widget-x": false
        }
      },
      /** Plays a new-message notification sound IF the audible-alert
          setting is true, else this is a no-op. Returns this.
      */
      playNewMessageSound: function f(){
        if(f.uri){
          if(!cs.pageIsActive
             /* ^^^ this could also arguably apply when chat is visible */
             && this.playedBeep && this.settings.getBool('beep-once',false)){
            return;
          }
          try{
            this.playedBeep = true;
            if(!f.audio) f.audio = new Audio(f.uri);
            f.audio.currentTime = 0;
            f.audio.play();
          }catch(e){
            console.error("Audio playblack failed.", f.uri, e);
          }
        }
        return this;
      },
      /**
         Sets the current new-message audio alert URI (must be a
         repository-relative path which responds with an audio
         file). Pass a falsy value to disable audio alerts. Returns
         this.
      */
      setNewMessageSound: function f(uri){
        this.playedBeep = false;
        delete this.playNewMessageSound.audio;
        this.playNewMessageSound.uri = uri;
        this.settings.set('audible-alert', uri);
        return this;
      },
      /**
         Expects e to be one of the elements in this.e.views.
         The 'hidden' class is removed from e and added to
         all other elements in that list. Returns e.
      */
      setCurrentView: function(e){
        if(e===this.e.currentView){
          return e;
        }
        this.e.views.forEach(function(E){
          if(e!==E) D.addClass(E,'hidden');
        });
        this.e.currentView = e;
        if(this.e.currentView.$beforeShow) this.e.currentView.$beforeShow();
        D.removeClass(e,'hidden');
        this.animate(this.e.currentView, 'anim-fade-in-fast');
        return this.e.currentView;
      },
      /**
         Updates the "active user list" view if we are not currently
         batch-loading messages and if the active user list UI element
         is active.
      */
      updateActiveUserList: function callee(){
        if(this._isBatchLoading
           || this.e.activeUserListWrapper.classList.contains('hidden')){
          return this;
        }else if(!callee.sortUsersSeen){
          /** Array.sort() callback. Expects an array of user names and
              sorts them in last-received message order (newest first). */
          const self = this;
          callee.sortUsersSeen = function(l,r){
            l = self.usersLastSeen[l];
            r = self.usersLastSeen[r];
            if(l && r) return r - l;
            else if(l) return -1;
            else if(r) return 1;
            else return 0;
          };
          callee.addUserElem = function(u){
            const uSpan = D.addClass(D.span(), 'chat-user');
            const uDate = self.usersLastSeen[u];
            if(self.filterState.activeUser===u){
              uSpan.classList.add('selected');
            }
            uSpan.dataset.uname = u;
            D.append(uSpan, u, "\n",
                     D.append(
                       D.addClass(D.span(),'timestamp'),
                       localTimeString(uDate)//.substr(5/*chop off year*/)
                     ));
            if(uDate.$uColor){
              uSpan.style.backgroundColor = uDate.$uColor;
            }
            D.append(self.e.activeUserList, uSpan);
          };
        }
        //D.clearElement(this.e.activeUserList);
        D.remove(this.e.activeUserList.querySelectorAll('.chat-user'));
        Object.keys(this.usersLastSeen).sort(
          callee.sortUsersSeen
        ).forEach(callee.addUserElem);
        return this;
      },
      /** Show or hide the active user list. Returns this object. */
      showActiveUserList: function(yes){
        if(0===arguments.length) yes = true;
        this.e.activeUserListWrapper.classList[
          yes ? 'remove' : 'add'
        ]('hidden');
        D.removeClass(Chat.e.activeUserListWrapper, 'collapsed');
        if(Chat.e.activeUserListWrapper.classList.contains('hidden')){
          /* When hiding this element, undo all filtering */
          Chat.setUserFilter(false);
          /*Ideally we'd scroll the final message into view
            now, but because viewMessages is currently hidden behind
            viewConfig, scrolling is a no-op. */
          Chat.scrollMessagesTo(1);
        }else{
          Chat.updateActiveUserList();
          Chat.animate(Chat.e.activeUserListWrapper, 'anim-flip-v');
        }
        return this;
      },
      showActiveUserTimestamps: function(yes){
        if(0===arguments.length) yes = true;
        this.e.activeUserList.classList[yes ? 'add' : 'remove']('timestamps');
        return this;
      },
      /**
         Applies user name filter to all current messages, or clears
         the filter if uname is falsy.
      */
      setUserFilter: function(uname){
        this.filterState.activeUser = uname;
        const mw = this.e.viewMessages.querySelectorAll('.message-widget');
        const self = this;
        let eLast;
        if(!uname){
          D.removeClass(Chat.e.viewMessages.querySelectorAll('.message-widget.hidden'),
                        'hidden');
        }else{
          mw.forEach(function(w){
            if(self.filterState.match(w.dataset.xfrom)){
              w.classList.remove('hidden');
              eLast = w;
            }else{
              w.classList.add('hidden');
            }
          });
        }
        if(eLast) eLast.scrollIntoView(false);
        else this.scrollMessagesTo(1);
        cs.e.activeUserList.querySelectorAll('.chat-user').forEach(function(e){
          e.classList[uname===e.dataset.uname ? 'add' : 'remove']('selected');
        });
        return this;
      },

      /**
         If animations are enabled, passes its arguments
         to D.addClassBriefly(), else this is a no-op.
         If cb is a function, it is called after the
         CSS class is removed. Returns this object; 
      */
      animate: function f(e,a,cb){
        if(!f.$disabled){
          D.addClassBriefly(e, a, 0, cb);
        }
        return this;
      }
    };
    cs.e.inputFields = [ cs.e.input1, cs.e.inputM, cs.e.inputX ];
    cs.e.inputFields.$currentIndex = 0;
    cs.e.inputFields.forEach(function(e,ndx){
      if(ndx===cs.e.inputFields.$currentIndex) D.removeClass(e,'hidden');
      else D.addClass(e,'hidden');
    });
    if(D.attr(cs.e.inputX,'contenteditable','plaintext-only').isContentEditable){
      cs.$browserHasPlaintextOnly = true;
    }else{
      /* Only the Chrome family supports contenteditable=plaintext-only */
      cs.$browserHasPlaintextOnly = false;
      D.attr(cs.e.inputX,'contenteditable','true');
    }
    cs.animate.$disabled = true;
    F.fetch.beforesend = ()=>cs.ajaxStart();
    F.fetch.aftersend = ()=>cs.ajaxEnd();
    cs.pageTitleOrig = cs.e.pageTitle.innerText;
    const qs = (e)=>document.querySelector(e);
    const argsToArray = function(args){
      return Array.prototype.slice.call(args,0);
    };
    /**
       Reports an error via console.error() and as a toast message.
       Accepts any argument types valid for fossil.toast.error().
    */
    cs.reportError = function(/*msg args*/){
      const args = argsToArray(arguments);
      console.error("chat error:",args);
      F.toast.error.apply(F.toast, args);
    };
    /**
       Reports an error in the form of a new message in the chat
       feed. All arguments are appended to the message's content area
       using fossil.dom.append(), so may be of any type supported by
       that function.
    */
    cs.reportErrorAsMessage = function f(/*msg args*/){
      if(undefined === f.$msgid) f.$msgid=0;
      const args = argsToArray(arguments).map(function(v){
        return (v instanceof Error) ? v.message : v;
      });
      console.error("chat error:",args);
      const d = new Date().toISOString(),
            mw = new this.MessageWidget({
              isError: true,
              xfrom: null,
              msgid: "error-"+(++f.$msgid),
              mtime: d,
              lmtime: d,
              xmsg: args
            });
      this.injectMessageElem(mw.e.body);
      mw.scrollIntoView();
    };

    cs.getMessageElemById = function(id){
      return qs('[data-msgid="'+id+'"]');
    };

    /** Finds the last .message-widget element and returns it or
        the undefined value if none are found. */
    cs.fetchLastMessageElem = function(){
      const msgs = document.querySelectorAll('.message-widget');
      var rc;
      if(msgs.length){
        rc = this.e.newestMessage = msgs[msgs.length-1];
      }
      return rc;
    };

    /**
       LOCALLY deletes a message element by the message ID or passing
       the .message-row element. Returns true if it removes an element,
       else false.
    */
    cs.deleteMessageElem = function(id){
      var e;
      if(id instanceof HTMLElement){
        e = id;
        id = e.dataset.msgid;
      }else{
        e = this.getMessageElemById(id);
      }
      if(e && id){
        D.remove(e);
        if(e===this.e.newestMessage){
          this.fetchLastMessageElem();
        }
        F.toast.message("Deleted message "+id+".");
      }
      return !!e;
    };

    /**
       Toggles the given message between its parsed and plain-text
       representations. It requires a server round-trip to collect the
       plain-text form but caches it for subsequent toggles.

       Expects the ID of a currently-loaded message or a
       message-widget DOM elment from which it can extract an id.
       This is an async operation the first time it's passed a given
       message and synchronous on subsequent calls for that
       message. It is a no-op if id does not resolve to a loaded
       message.
    */
    cs.toggleTextMode = function(id){
      var e;
      if(id instanceof HTMLElement){
        e = id;
        id = e.dataset.msgid;
      }else{
        e = this.getMessageElemById(id);
      }
      if(!e || !id) return false;
      else if(e.$isToggling) return;
      e.$isToggling = true;
      const content = e.querySelector('.content-target');
      if(!content){
        console.warn("Should not be possible: trying to toggle text",
                     "mode of a message with no .content-target.", e);
        return;
      }
      if(!content.$elems){
        content.$elems = [
          content.firstElementChild, // parsed elem
          undefined // plaintext elem
        ];
      }else if(content.$elems[1]){
        // We have both content types. Simply toggle them.
        const child = (
          content.firstElementChild===content.$elems[0]
            ? content.$elems[1]
            : content.$elems[0]
        );
        D.clearElement(content);
        if(child===content.$elems[1]){
          /* When showing the unformatted version, inject a
             copy-to-clipboard button. This is a workaround for
             mouse-copying from that field collecting twice as many
             newlines as it should (for unknown reasons). */
          const cpId = 'copy-to-clipboard-'+id;
          /* ^^^ copy button element ID, needed for LABEL element
             pairing.  Recall that we destroy all child elements of
             `content` each time we hit this block, so we can reuse
             that element ID on subsequent toggles. */
          const btnCp = D.attr(D.addClass(D.span(),'copy-button'), 'id', cpId);
          F.copyButton(btnCp, {extractText: ()=>child._xmsgRaw});
          const lblCp = D.label(cpId, "Copy unformatted text");
          lblCp.addEventListener('click',()=>btnCp.click(), false);
          D.append(content, D.append(D.addClass(D.span(), 'nobr'), btnCp, lblCp));
        }
        delete e.$isToggling;
        D.append(content, child);
        return;
      }
      // We need to fetch the plain-text version...
      const self = this;
      F.fetch('chat-fetch-one',{
        urlParams:{ name: id, raw: true},
        responseType: 'json',
        onload: function(msg){
          content.$elems[1] = D.append(D.pre(),msg.xmsg);
          content.$elems[1]._xmsgRaw = msg.xmsg/*used for copy-to-clipboard feature*/;
          self.toggleTextMode(e);
        },
        aftersend:function(){
          delete e.$isToggling;
          Chat.ajaxEnd();
        }
      });
      return true;
    };

    /** Given a .message-row element, this function returns whethe the
        current user may, at least hypothetically, delete the message
        globally.  A user may always delete a local copy of a
        post. The server may trump this, e.g. if the login has been
        cancelled after this page was loaded.
    */
    cs.userMayDelete = function(eMsg){
      return +eMsg.dataset.msgid>0
        && (this.me === eMsg.dataset.xfrom
            || F.user.isAdmin/*will be confirmed server-side*/);
    };

    /** Returns a new Error() object encapsulating state from the given
        fetch() response promise. */
    cs._newResponseError = function(response){
      return new Error([
        "HTTP status ", response.status,": ",response.url,": ",
        response.statusText].join(''));
    };

    /** Helper for reporting HTTP-level response errors via fetch().
        If response.ok then response.json() is returned, else an Error
        is thrown. */
    cs._fetchJsonOrError = function(response){
      if(response.ok) return response.json();
      else throw cs._newResponseError(response);
    };

    /**
       Removes the given message ID from the local chat record and, if
       the message was posted by this user OR this user in an
       admin/setup, also submits it for removal on the remote.

       id may optionally be a DOM element, in which case it must be a
       .message-row element.
    */
    cs.deleteMessage = function(id){
      var e;
      if(id instanceof HTMLElement){
        e = id;
        id = e.dataset.msgid;
      }else{
        e = this.getMessageElemById(id);
      }
      if(!(e instanceof HTMLElement)) return;
      if(this.userMayDelete(e)){
        this.ajaxStart();
        F.fetch("chat-delete/" + id, {
          responseType: 'json',
          onload:(r)=>this.deleteMessageElem(r),
          onerror:(err)=>this.reportErrorAsMessage(err)
        });
      }else{
        this.deleteMessageElem(id);
      }
    };
    document.addEventListener('visibilitychange', function(ev){
      cs.pageIsActive = ('visible' === document.visibilityState);
      cs.playedBeep = false;
      if(cs.pageIsActive){
        cs.e.pageTitle.innerText = cs.pageTitleOrig;
        if(document.activeElement!==cs.inputElement()){
          /* An attempt to resolve usability problem reported by Joe
             M. where the Pale Moon browser is giving input focus to
             the Preview button. The down-side of this is that it will
             deselect any text which was previously selected on this
             page. This also, unfortunately, places the focus at the
             start of the element, rather than the last cursor position
             (like a textarea would). */
          setTimeout(()=>cs.inputFocus(), 0);
        }
      }
    }, true);
    cs.setCurrentView(cs.e.viewMessages);

    cs.e.activeUserList.addEventListener('click', function f(ev){
      /* Filter messages on a user clicked in activeUserList */
      ev.stopPropagation();
      ev.preventDefault();
      let eUser = ev.target;
      while(eUser!==this && !eUser.classList.contains('chat-user')){
        eUser = eUser.parentNode;
      }
      if(eUser==this || !eUser) return false;
      const uname = eUser.dataset.uname;
      let eLast;
      cs.setCurrentView(cs.e.viewMessages);
      if(eUser.classList.contains('selected')){
        /* If curently selected, toggle filter off */
        eUser.classList.remove('selected');
        cs.setUserFilter(false);
        delete f.$eSelected;
      }else{
        if(f.$eSelected) f.$eSelected.classList.remove('selected');
        f.$eSelected = eUser;
        eUser.classList.add('selected');
        cs.setUserFilter(uname);
      }
      return false;
    }, false);
    return cs;
  })()/*Chat initialization*/;


  /** Returns the first .message-widget element in DOM element
      e's lineage. */
  const findMessageWidgetParent = function(e){
    while( e && !e.classList.contains('message-widget')){
      e = e.parentNode;
    }
    return e;
  };

  /**
     Custom widget type for rendering messages (one message per
     instance). These are modelled after FIELDSET elements but we
     don't use FIELDSET because of cross-browser inconsistencies in
     features of the FIELDSET/LEGEND combination, e.g. inability to
     align legends via CSS in Firefox and clicking-related
     deficiencies in Safari.
  */
  Chat.MessageWidget = (function(){
    /**
       Constructor. If passed an argument, it is passed to
       this.setMessage() after initialization.
    */
    const ctor = function(){
      this.e = {
        body: D.addClass(D.div(), 'message-widget'),
        tab: D.addClass(D.div(), 'message-widget-tab'),
        content: D.addClass(D.div(), 'message-widget-content')
      };
      D.append(this.e.body, this.e.tab, this.e.content);
      this.e.tab.setAttribute('role', 'button');
      if(arguments.length){
        this.setMessage(arguments[0]);
      }
    };
    /* Left-zero-pad a number to at least 2 digits */
    const dowMap = {
      /* Map of Date.getDay() values to weekday names. */
      0: "Sunday", 1: "Monday", 2: "Tuesday",
      3: "Wednesday", 4: "Thursday", 5: "Friday",
      6: "Saturday"
    };
    /* Given a Date, returns the timestamp string used in the "tab"
       part of message widgets. If longFmt is true then a verbose
       format is used, else a brief format is used. The returned string
       is in client-local time. */
    const theTime = function(d, longFmt=false){
      const li = [];
      if( longFmt ){
        li.push(
          d.getFullYear(),
          '-', pad2(d.getMonth()+1),
          '-', pad2(d.getDate()),
          ' ',
          d.getHours(), ":",
          (d.getMinutes()+100).toString().slice(1,3)
        );
      }else{
        li.push(
          d.getHours(),":",
          (d.getMinutes()+100).toString().slice(1,3),
          ' ', dowMap[d.getDay()]
        );
      }
      return li.join('');
    };

    /**
       Returns true if this page believes it can embed a view of the
       file wrapped by the given message object, else returns false.
    */
    const canEmbedFile = function f(msg){
      if(!f.$rx){
        f.$rx = /\.((html?)|(txt)|(md)|(wiki)|(pikchr))$/i;
        f.$specificTypes = [
          /* Mime types we know we can embed, sans image/... */
          'text/plain',
          'text/html',
          'text/x-markdown',
          /* Firefox sends text/markdown when uploading .md files */
          'text/markdown',
          'text/x-pikchr',
          'text/x-fossil-wiki'
          /* Add more as we discover which ones Firefox won't
             force the user to try to download. */
        ];
      }
      if(msg.fmime){
        if(msg.fmime.startsWith("image/")
           || f.$specificTypes.indexOf(msg.fmime)>=0){
          return true;
        }
      }
      return (msg.fname && f.$rx.test(msg.fname));
    };

    /**
      Returns true if the given message object "should"
      be embedded in fossil-rendered form instead of
      raw content form. This is only intended to be passed
      message objects for which canEmbedFile() returns true.
    */
    const shouldFossilRenderEmbed = function f(msg){
      if(!f.$rx){
        f.$rx = /\.((md)|(wiki)|(pikchr))$/i;
        f.$specificTypes = [
          'text/x-markdown',
          'text/markdown' /* Firefox-uploaded md files */,
          'text/x-pikchr',
          'text/x-fossil-wiki'
        ];
      }
      if(msg.fmime){
        if(f.$specificTypes.indexOf(msg.fmime)>=0) return true;
      }
      return msg.fname && f.$rx.test(msg.fname);
    };

    const adjustIFrameSize = function(msgObj){
      const iframe = msgObj.e.iframe;
      const body = iframe.contentWindow.document.querySelector('body');
      if(body && !body.style.fontSize){
        /** _Attempt_ to force the iframe to inherit the message's text size
            if the body has no explicit size set. On desktop systems
            the size is apparently being inherited in that case, but on mobile
            not. */
        body.style.fontSize = window.getComputedStyle(msgObj.e.content);
      }
      if('' === iframe.style.maxHeight){
        /* Resize iframe height to fit the content. Workaround: if we
           adjust the iframe height while it's hidden then its height
           is 0, so we must briefly unhide it. */
        const isHidden = iframe.classList.contains('hidden');
        if(isHidden) D.removeClass(iframe, 'hidden');
        iframe.style.maxHeight = iframe.style.height
          = iframe.contentWindow.document.documentElement.scrollHeight + 'px';
        if(isHidden) D.addClass(iframe, 'hidden');
      }
    };

    ctor.prototype = {
      scrollIntoView: function(){
        this.e.content.scrollIntoView();
      },
      setMessage: function(m){
        const ds = this.e.body.dataset;
        ds.timestamp = m.mtime;
        ds.lmtime = m.lmtime;
        ds.msgid = m.msgid;
        ds.xfrom = m.xfrom || '';
        if(m.xfrom === Chat.me){
          D.addClass(this.e.body, 'mine');
        }
        if(m.uclr){
          this.e.content.style.backgroundColor = m.uclr;
          this.e.tab.style.backgroundColor = m.uclr;
        }
        const d = new Date(m.mtime);
        D.clearElement(this.e.tab);
        var contentTarget = this.e.content;
        var eXFrom /* element holding xfrom name */;
        if(m.xfrom){
          eXFrom = D.append(D.addClass(D.span(), 'xfrom'), m.xfrom);
          const wrapper = D.append(
            D.span(), eXFrom,
            ' ',
            D.append(D.addClass(D.span(), 'msgid'),
                     '#' + (m.msgid||'???')),
            (m.isSearchResult ? ' ' : ' @ '),
            D.append(D.addClass(D.span(), 'timestamp'),
                     theTime(d,!!m.isSearchResult))
          );
          D.append(this.e.tab, wrapper);
        }else{/*notification*/
          D.addClass(this.e.body, 'notification');
          if(m.isError){
            D.addClass([contentTarget, this.e.tab], 'error');
          }
          D.append(
            this.e.tab,
            D.append(D.code(), 'notification @ ',theTime(d,false))
          );
        }
        if( m.xfrom && m.fsize>0 ){
          if( m.fmime
              && m.fmime.startsWith("image/")
              && Chat.settings.getBool('images-inline',true)
            ){
            const extension = m.fname.split('.').pop();
            contentTarget.appendChild(D.img("chat-download/" + m.msgid +(
              extension ? ('.'+extension) : ''/*So that IMG tag mimetype guessing works*/
            )));
            ds.hasImage = 1;
          }else{
            // Add a download link.
            const downloadUri = window.fossil.rootPath+
                  'chat-download/' + m.msgid+'/'+encodeURIComponent(m.fname);
            const w = D.addClass(D.div(), 'attachment-link');
            const a = D.a(downloadUri,
              // ^^^ add m.fname to URL to cause downloaded file to have that name.
              "(" + m.fname + " " + m.fsize + " bytes)"
            )
            D.attr(a,'target','_blank');
            D.append(w, a);
            if(canEmbedFile(m)){
              /* Add an option to embed HTML attachments in an iframe. The primary
                 use case is attached diffs. */
              const shouldFossilRender = shouldFossilRenderEmbed(m);
              const downloadArgs = shouldFossilRender ? '?render' : '';
              D.addClass(contentTarget, 'wide');
              const embedTarget = this.e.content;
              const self = this;
              const btnEmbed = D.attr(D.checkbox("1", false), 'id',
                                      'embed-'+ds.msgid);
              const btnLabel = D.label(btnEmbed, shouldFossilRender
                                       ? "Embed (fossil-rendered)" : "Embed");
              /* Maintenance reminder: do not disable the toggle
                 button while the content is loading because that will
                 cause it to get stuck in disabled mode if the browser
                 decides that loading the content should prompt the
                 user to download it, rather than embed it in the
                 iframe. */
              btnEmbed.addEventListener('change',function(){
                if(self.e.iframe){
                  if(btnEmbed.checked){
                    D.removeClass(self.e.iframe, 'hidden');
                    if(self.e.$iframeLoaded) adjustIFrameSize(self);
                  }
                  else D.addClass(self.e.iframe, 'hidden');
                  return;
                }
                const iframe = self.e.iframe = document.createElement('iframe');
                D.append(embedTarget, iframe);
                iframe.addEventListener('load', function(){
                  self.e.$iframeLoaded = true;
                  adjustIFrameSize(self);
                });
                iframe.setAttribute('src', downloadUri + downloadArgs);
              });
              D.append(w, btnEmbed, btnLabel);
            }
            contentTarget.appendChild(w);
          }
        }
        if(m.xmsg){
          if(m.fsize>0){
            /* We have file/image content, so need another element for
               the message text. */
            contentTarget = D.div();
            D.append(this.e.content, contentTarget);
          }
          D.addClass(contentTarget, 'content-target'
                     /*target element for the 'toggle text mode' feature*/);
          // The m.xmsg text comes from the same server as this script and
          // is guaranteed by that server to be "safe" HTML - safe in the
          // sense that it is not possible for a malefactor to inject HTML
          // or javascript or CSS.  The m.xmsg content might contain
          // hyperlinks, but otherwise it will be markup-free.  See the
          // chat_format_to_html() routine in the server for details.
          //
          // Hence, even though innerHTML is normally frowned upon, it is
          // perfectly safe to use in this context.
          if(m.xmsg && 'string' !== typeof m.xmsg){
            // Used by Chat.reportErrorAsMessage()
            D.append(contentTarget, m.xmsg);
          }else{
            contentTarget.innerHTML = m.xmsg;
            contentTarget.querySelectorAll('a').forEach(addAnchorTargetBlank);
            if(F.pikchr){
              F.pikchr.addSrcView(contentTarget.querySelectorAll('svg.pikchr'));
            }
          }
        }
        //console.debug("tab",this.e.tab);
        //console.debug("this.e.tab.firstElementChild",this.e.tab.firstElementChild);
        this.e.tab.firstElementChild.addEventListener('click', this._handleLegendClicked, false);
        /*if(eXFrom){
          eXFrom.addEventListener('click', ()=>this.e.tab.click(), false);
        }*/
        return this;
      },
      /* Event handler for clicking .message-user elements to show their
         timestamps and a set of actions. */
      _handleLegendClicked: function f(ev){
        if(!f.popup){
          /* "Popup" widget */
          f.popup = {
            e: D.addClass(D.div(), 'chat-message-popup'),
            refresh:function(){
              const eMsg = this.$eMsg/*.message-widget element*/;
              if(!eMsg) return;
              D.clearElement(this.e);
              const d = new Date(eMsg.dataset.timestamp);
              if(d.getMinutes().toString()!=="NaN"){
                // Date works, render informative timestamps
                const xfrom = eMsg.dataset.xfrom || 'server';
                D.append(this.e,
                         D.append(D.span(), localTimeString(d)," ",Chat.me," time"),
                         D.append(D.span(), iso8601ish(d)));
                if(eMsg.dataset.lmtime && xfrom!==Chat.me){
                  D.append(this.e,
                           D.append(D.span(), localTime8601(
                             new Date(eMsg.dataset.lmtime)
                           ).replace('T',' ')," ",xfrom," time"));
                }
              }else{
                /* This might not be necessary any more: it was
                   initially caused by Safari being stricter than
                   other browsers on its time string input, and that
                   has since been resolved by emiting a stricter
                   format. */
                // Date doesn't work, so dumb it down...
                D.append(this.e, D.append(D.span(), eMsg.dataset.timestamp," zulu"));
              }
              const toolbar = D.addClass(D.div(), 'toolbar');
              D.append(this.e, toolbar);
              const btnDeleteLocal = D.button("Delete locally");
              D.append(toolbar, btnDeleteLocal);
              const self = this;
              btnDeleteLocal.addEventListener('click', function(){
                self.hide();
                Chat.deleteMessageElem(eMsg);
              });
              if(Chat.userMayDelete(eMsg)){
                const btnDeleteGlobal = D.button("Delete globally");
                D.append(toolbar, btnDeleteGlobal);
                F.confirmer(btnDeleteGlobal,{
                  pinSize: true,
                  ticks: F.config.confirmerButtonTicks,
                  confirmText: "Confirm delete?",
                  onconfirm:function(){
                    self.hide();
                    Chat.deleteMessage(eMsg);
                  }
                });
              }
              const toolbar3 = D.addClass(D.div(), 'toolbar');
              D.append(this.e, toolbar3);
              D.append(toolbar3, D.button(
                "Locally remove all previous messages",
                function(){
                  self.hide();
                  Chat.mnMsg = +eMsg.dataset.msgid;
                  var e = eMsg.previousElementSibling;
                  while(e && e.classList.contains('message-widget')){
                    const n = e.previousElementSibling;
                    D.remove(e);
                    e = n;
                  }
                  eMsg.scrollIntoView();
                }
              ));
              const toolbar2 = D.addClass(D.div(), 'toolbar');
              D.append(this.e, toolbar2);
              if(eMsg.querySelector('.content-target')){
                /* ^^^ messages with only an embedded image have no
                   .content-target area. */
                D.append(toolbar2, D.button(
                  "Toggle text mode", function(){
                    self.hide();
                    Chat.toggleTextMode(eMsg);
                  }));
              }
              if(eMsg.dataset.xfrom){
                /* Add a link to the /timeline filtered on this user. */
                const timelineLink = D.attr(
                  D.a(F.repoUrl('timeline',{
                    u: eMsg.dataset.xfrom,
                    y: 'a'
                  }), "User's Timeline"),
                  'target', '_blank'
                );
                D.append(toolbar2, timelineLink);
                if(Chat.filterState.activeUser &&
                   Chat.filterState.match(eMsg.dataset.xfrom)){
                  /* Add a button to clear user filter and jump to
                     this message in its original context. */
                  D.append(
                    this.e,
                    D.append(
                      D.addClass(D.div(), 'toolbar'),
                      D.button(
                        "Message in context",
                        function(){
                          self.hide();
                          Chat.setUserFilter(false);
                          eMsg.scrollIntoView(false);
                          Chat.animate(
                            eMsg.firstElementChild, 'anim-flip-h'
                            //eMsg.firstElementChild, 'anim-flip-v'
                            //eMsg.childNodes, 'anim-rotate-360'
                            //eMsg.childNodes, 'anim-flip-v'
                            //eMsg, 'anim-flip-v'
                          );
                        })
                    )
                  );
                }/*jump-to button*/
              }
              const tab = eMsg.querySelector('.message-widget-tab');
              D.append(tab, this.e);
              D.removeClass(this.e, 'hidden');
              Chat.animate(this.e, 'anim-fade-in-fast');
            }/*refresh()*/,
            hide: function(){
              delete this.$eMsg;
              D.addClass(this.e, 'hidden');
              D.clearElement(this.e);
            },
            show: function(tgtMsg){
              if(tgtMsg === this.$eMsg){
                this.hide();
                return;
              }
              this.$eMsg = tgtMsg;
              this.refresh();
            }
          }/*f.popup*/;
        }/*end static init*/
        const theMsg = findMessageWidgetParent(ev.target);
        if(theMsg) f.popup.show(theMsg);
      }/*_handleLegendClicked()*/
    };
    return ctor;
  })()/*MessageWidget*/;

  /**
     A widget for loading more messages (context) around a /chat-query
     result message.
  */
  Chat.SearchCtxLoader = (function(){
    const nMsgContext = 5;
    const zUpArrow = '\u25B2';
    const zDownArrow = '\u25BC';
    const ctor = function(o){

      /* iFirstInTable:
      **   msgid of first row in chatfts table.
      **
      ** iLastInTable:
      **   msgid of last row in chatfts table.
      **
      ** iPrevId:
      **   msgid of message immediately above this spacer. Or 0 if this
      **   spacer is above all results.
      **
      ** iNextId:
      **   msgid of message immediately below this spacer. Or 0 if this
      **   spacer is below all results.
      **
      ** bIgnoreClick:
      **   ignore any clicks if this is true. This is used to ensure there
      **   is only ever one request belonging to this widget outstanding
      **   at any time.
      */
      this.o = {
        iFirstInTable: o.first,
        iLastInTable: o.last,
        iPrevId: o.previd,
        iNextId: o.nextid,
        bIgnoreClick: false
      };

      this.e = {
        body:    D.addClass(D.div(), 'spacer-widget'),
        up:      D.addClass(
          D.button(zDownArrow+' Load '+nMsgContext+' more '+zDownArrow),
          'up'
        ),
        down:    D.addClass(
          D.button(zUpArrow+' Load '+nMsgContext+' more '+zUpArrow),
          'down'
        ),
        all:     D.addClass(D.button('Load More'), 'all')
      };
      D.append( this.e.body, this.e.up, this.e.down, this.e.all );
      const ms = this;
      this.e.up.addEventListener('click', ()=>ms.load_messages(false));
      this.e.down.addEventListener('click', ()=>ms.load_messages(true));
      this.e.all.addEventListener('click', ()=>ms.load_messages( (ms.o.iPrevId==0) ));
      this.set_button_visibility();
    };

    ctor.prototype = {
      set_button_visibility: function() {
        if( !this.e ) return;
        const o = this.o;

        const iPrevId = (o.iPrevId!=0) ? o.iPrevId : o.iFirstInTable-1;
        const iNextId = (o.iNextId!=0) ? o.iNextId : o.iLastInTable+1;
        let nDiff = (iNextId - iPrevId) - 1;

        for( const x of [this.e.up, this.e.down, this.e.all] ){
          if( x ) D.addClass(x, 'hidden');
        }
        let nVisible = 0;
        if( nDiff>0 ){
          if( nDiff>nMsgContext && (o.iPrevId==0 || o.iNextId==0) ){
            nDiff = nMsgContext;
          }

          if( nDiff<=nMsgContext && o.iPrevId!=0 && o.iNextId!=0 ){
            D.removeClass(this.e.all, 'hidden');
            ++nVisible;
            this.e.all.innerText = (
              zUpArrow + " Load " + nDiff + " more " + zDownArrow
            );
          }else{
            if( o.iPrevId!=0 ){
              ++nVisible;
              D.removeClass(this.e.up, 'hidden');
            }else if( this.e.up ){
              if( this.e.up.parentNode ) D.remove(this.e.up);
              delete this.e.up;
            }
            if( o.iNextId!=0 ){
              ++nVisible;
              D.removeClass(this.e.down, 'hidden');
            }else if( this.e.down ){
              if( this.e.down.parentNode ) D.remove( this.e.down );
              delete this.e.down;
            }
          }
        }
        if( !nVisible ){
          /* The DOM elements can now be disposed of. */
          for( const x of [this.e.up, this.e.down, this.e.all, this.e.body] ){
            if( x?.parentNode ) D.remove(x);
          }
          delete this.e;
        }
      },

      load_messages: function(bDown) {
        if( this.bIgnoreClick ) return;

        var iFirst = 0;           /* msgid of first message to fetch */
        var nFetch = 0;           /* Number of messages to fetch */
        var iEof = 0;             /* last msgid in spacers range, plus 1 */

        const e = this.e, o = this.o;
        this.bIgnoreClick = true;

        /* Figure out the required range of messages. */
        if( bDown ){
          iFirst = this.o.iNextId - nMsgContext;
          if( iFirst<this.o.iFirstInTable ){
            iFirst = this.o.iFirstInTable;
          }
        }else{
          iFirst = this.o.iPrevId+1;
        }
        nFetch = nMsgContext;
        iEof = (this.o.iNextId > 0) ? this.o.iNextId : this.o.iLastInTable+1;
        if( iFirst+nFetch>iEof ){
          nFetch = iEof - iFirst;
        }
        const ms = this;
        F.fetch("chat-query",{
          urlParams:{
            q: '',
            n: nFetch,
            i: iFirst
          },
          responseType: "json",
          onload:function(jx){
            if( bDown ) jx.msgs.reverse();
            jx.msgs.forEach((m) => {
              m.isSearchResult = true;
              var mw = new Chat.MessageWidget(m);
              if( bDown ){
                /* Inject the message below this object's body, or
                   append it to Chat.e.searchContent if this element
                   is the final one in its parent (Chat.e.searchContent). */
                const eAnchor = e.body.nextElementSibling;
                if( eAnchor ) Chat.e.searchContent.insertBefore(mw.e.body, eAnchor);
                else D.append(Chat.e.searchContent, mw.e.body);
              }else{
                Chat.e.searchContent.insertBefore(mw.e.body, e.body);
              }
            });
            if( bDown ){
              o.iNextId -= jx.msgs.length;
            }else{
              o.iPrevId += jx.msgs.length;
            }
            ms.set_button_visibility();
            ms.bIgnoreClick = false;
          }
        });
      }
    };

    return ctor;
  })() /*SearchCtxLoader*/;

  const BlobXferState = (function(){
    /* State for paste and drag/drop */
    const bxs = {
      dropDetails: document.querySelector('#chat-drop-details'),
      blob: undefined,
      clear: function(){
        this.blob = undefined;
        D.clearElement(this.dropDetails);
        Chat.e.inputFile.value = "";
      }
    };
    /** Updates the paste/drop zone with details of the pasted/dropped
        data. The argument must be a Blob or Blob-like object (File) or
        it can be falsy to reset/clear that state.*/
    const updateDropZoneContent = bxs.updateDropZoneContent = function(blob){
      //console.debug("updateDropZoneContent()",blob);
      const dd = bxs.dropDetails;
      bxs.blob = blob;
      D.clearElement(dd);
      if(!blob){
        Chat.e.inputFile.value = '';
        return;
      }
      D.append(dd, "Attached: ", blob.name,
               D.br(), "Size: ",blob.size);
      const btn = D.button("Cancel");
      D.append(dd, D.br(), btn);
      btn.addEventListener('click', ()=>updateDropZoneContent(), false);
      if(blob.type && (blob.type.startsWith("image/") || blob.type==='BITMAP')){
        const img = D.img();
        D.append(dd, D.br(), img);
        const reader = new FileReader();
        reader.onload = (e)=>img.setAttribute('src', e.target.result);
        reader.readAsDataURL(blob);
      }
    };
    Chat.e.inputFile.addEventListener('change', function(ev){
      updateDropZoneContent(this.files && this.files[0] ? this.files[0] : undefined)
    });
    /* Handle image paste from clipboard. TODO: figure out how we can
       paste non-image binary data as if it had been selected via the
       file selection element. */
    const pasteListener = function(event){
      const items = event.clipboardData.items,
            item = items[0];
      //console.debug("paste event",event.target,item,event);
      //console.debug("paste event item",item);
      if(item && item.type && ('file'===item.kind || 'BITMAP'===item.type)){
        updateDropZoneContent(false/*clear prev state*/);
        updateDropZoneContent(item.getAsFile());
        event.stopPropagation();
        event.preventDefault(true);
        return false;
      }
      /* else continue propagating */
    };
    document.addEventListener('paste', pasteListener, true);
    if(window.Selection && window.Range && !Chat.$browserHasPlaintextOnly){
      /* Acrobatics to keep *some* installations of Firefox
         from pasting formatting into contenteditable fields.
         This also works on Chrome, but chrome has the
         contenteditable=plaintext-only property which does this
         for us. */
      Chat.e.inputX.addEventListener(
        'paste',
        function(ev){
          if (ev.clipboardData && ev.clipboardData.getData) {
            const pastedText = ev.clipboardData.getData('text/plain');
            const selection = window.getSelection();
            if (!selection.rangeCount) return false;
            selection.deleteFromDocument(/*remove selected content*/);
            selection.getRangeAt(0).insertNode(document.createTextNode(pastedText));
            selection.collapseToEnd(/*deselect pasted text and set cursor at the end*/);
            ev.preventDefault();
            return false;
          }
        }, false);
    }
    const noDragDropEvents = function(ev){
      /* contenteditable tries to do its own thing with dropped data,
         which is not compatible with how we use it, so... */
      ev.dataTransfer.effectAllowed = 'none';
      ev.dataTransfer.dropEffect = 'none';
      ev.preventDefault();
      ev.stopPropagation();
      return false;
    };
    ['drop','dragenter','dragleave','dragend'].forEach(
      (k)=>Chat.e.inputX.addEventListener(k, noDragDropEvents, false)
    );
    return bxs;
  })()/*drag/drop/paste*/;

  const tzOffsetToString = function(off){
    const hours = Math.round(off/60), min = Math.round(off % 30);
    return ''+(hours + (min ? '.5' : ''));
  };
  const localTime8601 = function(d){
    return [
      d.getYear()+1900, '-', pad2(d.getMonth()+1), '-', pad2(d.getDate()),
      'T', pad2(d.getHours()),':', pad2(d.getMinutes()),':',pad2(d.getSeconds())
    ].join('');
  };

  /**
     Called by Chat.submitMessage() when message sending failed. Injects a fake message
     containing the content and attachment of the failed message and gives the user buttons
     to discard it or edit and retry.
   */
  const recoverFailedMessage = function(state){
    const w = D.addClass(D.div(), 'failed-message');
    D.append(w, D.append(
      D.span(),"This message was not successfully sent to the server:"
    ));
    if(state.msg){
      const ta = D.textarea();
      ta.value = state.msg;
      D.append(w,ta);
    }
    if(state.blob){
      D.append(w,D.append(D.span(),"Attachment: ",(state.blob.name||"unnamed")));
      //console.debug("blob = ",state.blob);
    }
    const buttons = D.addClass(D.div(), 'buttons');
    D.append(w, buttons);
    D.append(buttons, D.button("Discard message?", function(){
      const theMsg = findMessageWidgetParent(w);
      if(theMsg) Chat.deleteMessageElem(theMsg);
    }));
    D.append(buttons, D.button("Edit message and try again?", function(){
      if(state.msg) Chat.inputValue(state.msg);
      if(state.blob) BlobXferState.updateDropZoneContent(state.blob);
      const theMsg = findMessageWidgetParent(w);
      if(theMsg) Chat.deleteMessageElem(theMsg);
    }));
    Chat.reportErrorAsMessage(w);
  };

  /**
     Submits the contents of the message input field (if not empty)
     and/or the file attachment field to the server. If both are
     empty, this is a no-op.

     If the current view is the history search, this instead sends the
     input text to that widget.
  */
  Chat.submitMessage = function f(){
    if(!f.spaces){
      f.spaces = /\s+$/;
      f.markdownContinuation = /\\\s+$/;
      f.spaces2 = /\s{3,}$/;
    }
    switch( this.e.currentView ){
      case this.e.viewSearch: this.submitSearch();
        return;
      default: break;
    }
    this.setCurrentView(this.e.viewMessages);
    const fd = new FormData();
    const fallback = {msg: this.inputValue()};
    var msg = fallback.msg;
    if(msg && (msg.indexOf('\n')>0 || f.spaces.test(msg))){
      /* Cosmetic: trim most whitespace from the ends of lines to try to
         keep copy/paste from terminals, especially wide ones, from
         forcing a horizontal scrollbar on all clients. This breaks
         markdown's use of blackslash-space-space for paragraph
         continuation, but *not* doing this affects all clients every
         time someone pastes in console copy/paste from an affected
         platform. We seem to have narrowed to the console pasting
         problem to users of tmux together with certain apps (vim, at
         a minimum). Most consoles don't behave that way.

         We retain two trailing spaces so that markdown conventions
         which use end-of-line spacing aren't broken by this
         stripping.
      */
      const xmsg = msg.split('\n');
      xmsg.forEach(function(line,ndx){
        if(!f.markdownContinuation.test(line)){
          xmsg[ndx] = line.replace(f.spaces2, '  ');
        }
      });
      msg = xmsg.join('\n');
    }
    if(msg) fd.set('msg',msg);
    const file = BlobXferState.blob || this.e.inputFile.files[0];
    if(file) fd.set("file", file);
    if( !msg && !file ) return;
    fallback.blob = file;
    const self = this;
    fd.set("lmtime", localTime8601(new Date()));
    F.fetch("chat-send",{
      payload: fd,
      responseType: 'text',
      onerror:function(err){
        self.reportErrorAsMessage(err);
        recoverFailedMessage(fallback);
      },
      onload:function(txt){
        if(!txt) return/*success response*/;
        try{
          const json = JSON.parse(txt);
          self.newContent({msgs:[json]});
        }catch(e){
          self.reportError(e);
        }
        recoverFailedMessage(fallback);
      }
    });
    BlobXferState.clear();
    Chat.inputValue("").inputFocus();
  };

  const inputWidgetKeydown = function f(ev){
    if(!f.$toggleCtrl){
      f.$toggleCtrl = function(currentMode){
        currentMode = !currentMode;
        Chat.settings.set('edit-ctrl-send', currentMode);
      };
      f.$toggleCompact = function(currentMode){
        currentMode = !currentMode;
        Chat.settings.set('edit-compact-mode', currentMode);
      };
    }
    if(13 !== ev.keyCode) return;
    const text = Chat.inputValue().trim();
    const ctrlMode = Chat.settings.getBool('edit-ctrl-send', false);
    //console.debug("Enter key event:", ctrlMode, ev.ctrlKey, ev.shiftKey, ev);
    if(ev.shiftKey){
      const compactMode = Chat.settings.getBool('edit-compact-mode', false);
      ev.preventDefault();
      ev.stopPropagation();
      /* Shift-enter will run preview mode UNLESS the input field is empty
         AND (preview or search mode) is active, in which cases it will
         switch back to message view. */
      if(!text &&
         (Chat.e.currentView===Chat.e.viewPreview
          | Chat.e.currentView===Chat.e.viewSearch)){
        Chat.setCurrentView(Chat.e.viewMessages);
      }else if(!text){
        f.$toggleCompact(compactMode);
      }else if(Chat.settings.getBool('edit-shift-enter-preview', true)){
        Chat.e.btnPreview.click();
      }
      return false;
    }
    if(ev.ctrlKey && !text && !BlobXferState.blob){
      /* Ctrl-enter on empty input field(s) toggles Enter/Ctrl-enter mode */
      ev.preventDefault();
      ev.stopPropagation();
      f.$toggleCtrl(ctrlMode);
      return false;
    }
    if(!ctrlMode && ev.ctrlKey && text){
      //console.debug("!ctrlMode && ev.ctrlKey && text.");
      /* Ctrl-enter in Enter-sends mode SHOULD, with this logic add a
         newline, but that is not happening, for unknown reasons
         (possibly related to this element being a contenteditable DIV
         instead of a textarea). Forcibly appending a newline do the
         input area does not work, also for unknown reasons, and would
         only be suitable when we're at the end of the input.

         Strangely, this approach DOES work for shift-enter, but we
         need shift-enter as a hotkey for preview mode.
      */
      //return;
      // return here "should" cause newline to be added, but that doesn't work
    }
    if((!ctrlMode && !ev.ctrlKey) || (ev.ctrlKey/* && ctrlMode*/)){
      /* Ship it! */
      ev.preventDefault();
      ev.stopPropagation();
      Chat.submitMessage();
      return false;
    }
  };
  Chat.e.inputFields.forEach(
    (e)=>e.addEventListener('keydown', inputWidgetKeydown, false)
  );
  Chat.e.btnSubmit.addEventListener('click',(e)=>{
    e.preventDefault();
    Chat.submitMessage();
    return false;
  });
  Chat.e.btnAttach.addEventListener(
    'click', ()=>Chat.e.inputFile.click(), false);

  (function(){/*Set up #chat-button-settings and related bits */
    if(window.innerWidth<window.innerHeight){
      // Must be set up before config view is...
      /* Alignment of 'my' messages: right alignment is conventional
         for mobile chat apps but can be difficult to read in wide
         windows (desktop/tablet landscape mode), so we default to a
         layout based on the apparent "orientation" of the window:
         tall vs wide. Can be toggled via settings. */
      document.body.classList.add('my-messages-right');
    }
    const settingsButton = document.querySelector('#chat-button-settings');
    const optionsMenu = E1('#chat-config-options');
    const eToggleView = function(ev){
      ev.preventDefault();
      ev.stopPropagation();
      Chat.setCurrentView(Chat.e.currentView===Chat.e.viewConfig
                          ? Chat.e.viewMessages : Chat.e.viewConfig);
      return false;
    };
    D.attr(settingsButton, 'role', 'button').addEventListener('click', eToggleView, false);
    Chat.e.viewConfig.querySelector('button.action-close').addEventListener('click', eToggleView, false);

    /** Internal acrobatics to allow certain settings toggles to access
        related toggles. */
    const namedOptions = {
      activeUsers:{
        label: "Show active users list",
        hint: "List users who have messages in the currently-loaded chat history.",
        boolValue: 'active-user-list'
      }
    };
    if(1){
      /* Per user request, toggle the list of users on and off if the
         legend element is tapped. */
      const optAu = namedOptions.activeUsers;
      optAu.theLegend = Chat.e.activeUserListWrapper.firstElementChild/*LEGEND*/;
      optAu.theList = optAu.theLegend.nextElementSibling/*user list container*/;
      optAu.theLegend.addEventListener('click',function(){
        D.toggleClass(Chat.e.activeUserListWrapper, 'collapsed');
        if(!Chat.e.activeUserListWrapper.classList.contains('collapsed')){
          Chat.animate(optAu.theList,'anim-flip-v');
        }
      }, false);
    }/*namedOptions.activeUsers additional setup*/
    /* Settings menu entries... they are presented in the order listed
       here, so the most frequently-needed ones "should" (arguably) be
       closer to the start of this list. */
    /**
       Settings ops structure:

       label: string for the UI

       boolValue: string (name of Chat.settings setting) or a function
       which returns true or false. If it is a string, it gets
       replaced by a function which returns
       Chat.settings.getBool(thatString) and the string gets assigned
       to the persistentSetting property of this object.

       select: SELECT element (instead of boolValue)

       callback: optional handler to call after setting is modified.
       Its "this" is the options object. If this object has a
       boolValue string or a persistentSetting property, the argument
       passed to the callback is a settings object in the form {key:K,
       value:V}. If this object does not have boolValue string or
       persistentSetting then the callback is passed an event object
       in response to the config option's UI widget being activated,
       normally a 'change' event.

       children: [array of settings objects]. These get listed under
       this element and indented slightly for visual grouping. Only
       one level of indention is supported.

       Elements which only have a label and maybe a hint and
       children can be used as headings.

       If a setting has a boolValue set, that gets rendered as a
       checkbox which toggles the given persistent setting (if
       boolValue is a string) AND listens for changes to that setting
       fired via Chat.settings.set() so that the checkbox can stay in
       sync with external changes to that setting. Various Chat UI
       elements stay in sync with the config UI via those settings
       events. The checkbox element gets added to the options object
       so that the callback() can reference it via this.checkbox.
    */
    const settingsOps = [{
      label: "Chat Configuration Options",
      hint: F.storage.isTransient()
        ? "Local store is unavailable. These settings are transient."
        : ["Most of these settings are persistent via ",
           F.storage.storageImplName(), ": ",
           F.storage.storageHelpDescription()].join('')
    },{
      label: "Editing Options...",
      children:[{
        label: "Chat-only mode",
        hint: "Toggle the page between normal fossil view and chat-only view.",
        boolValue: 'chat-only-mode'
      },{
        label: "Ctrl-enter to Send",
        hint: [
          "When on, only Ctrl-Enter will send messages and Enter adds ",
          "blank lines. When off, both Enter and Ctrl-Enter send. ",
          "When the input field has focus and is empty ",
          "then Ctrl-Enter toggles this setting."
        ].join(''),
        boolValue: 'edit-ctrl-send'
      },{
        label: "Compact mode",
        hint: [
          "Toggle between a space-saving or more spacious writing area. ",
          "When the input field has focus and is empty ",
          "then Shift-Enter may (depending on the current view) toggle this setting."
        ].join(''),
        boolValue: 'edit-compact-mode'
      },{
        label: "Use 'contenteditable' editing mode",
        boolValue: 'edit-widget-x',
        hint: [
          "When enabled, chat input uses a so-called 'contenteditable' ",
          "field. Though generally more comfortable and modern than ",
          "plain-text input fields, browser-specific quirks and bugs ",
          "may lead to frustration. Ideal for mobile devices."
        ].join('')
      },{
        label: "Shift-enter to preview",
        hint: ["Use shift-enter to preview being-edited messages. ",
               "This is normally desirable but some software-mode ",
               "keyboards misinteract with this, in which cases it can be ",
               "disabled."],
        boolValue: 'edit-shift-enter-preview'
      }]
    },{
      label: "Appearance Options...",
      children:[{
        label: "Left-align my posts",
        hint: "Default alignment of your own messages is selected "
          + "based on the window width/height ratio.",
        boolValue: ()=>!document.body.classList.contains('my-messages-right'),
        callback: function f(){
          document.body.classList[
            this.checkbox.checked ? 'remove' : 'add'
          ]('my-messages-right');
        }
      },{
        label: "Monospace message font",
        hint: "Use monospace font for message and input text.",
        boolValue: 'monospace-messages',
        callback: function(setting){
          document.body.classList[
            setting.value ? 'add' : 'remove'
          ]('monospace-messages');
        }
      },{
        label: "Show images inline",
        hint: "When enabled, attached images are shown inline, "+
          "else they appear as a download link.",
        boolValue: 'images-inline'
      }]
    }];

    /** Set up selection list of notification sounds. */
    if(1){
      const selectSound = D.select();
      D.option(selectSound, "", "(no audio)");
      const firstSoundIndex = selectSound.options.length;
      F.config.chat.alerts.forEach((a)=>D.option(selectSound, a));
      if(true===Chat.settings.getBool('audible-alert')){
        /* This setting used to be a plain bool. If we encounter
           such a setting, take the first sound in the list. */
        selectSound.selectedIndex = firstSoundIndex;
      }else{
        selectSound.value = Chat.settings.get('audible-alert','<none>');
        if(selectSound.selectedIndex<0){
          /* Missing file - removed after this setting was
            applied. Fall back to the first sound in the list. */
          selectSound.selectedIndex = firstSoundIndex;
        }
      }
      Chat.setNewMessageSound(selectSound.value);
      settingsOps.push({
        label: "Sound Options...",
        hint: "How to enable audio playback is browser-specific!",
        children:[{
          hint: "Audio alert",
          select: selectSound,
          callback: function(ev){
            const v = ev.target.value;
            Chat.setNewMessageSound(v);
            F.toast.message("Audio notifications "+(v ? "enabled" : "disabled")+".");
            if(v) setTimeout(()=>Chat.playNewMessageSound(), 0);
          }
        },{
          label: "Notify only once when away",
          hint: "Notify only for the first message received after chat is hidden from view.",
          boolValue: 'beep-once'
        },{
          label: "Play notification for your own messages",
          hint: "When enabled, the audio notification will be played for all messages, "+
            "including your own. When disabled only messages from other users "+
            "will trigger a notification.",
          boolValue: 'alert-own-messages'
        }]
      });
    }/*audio notification config*/
    settingsOps.push({
      label: "Active User List...",
      hint: [
        "/chat cannot track active connections, but it can tell ",
        "you who has posted recently..."].join(''),
      children:[
        namedOptions.activeUsers,{
          label: "Timestamps in active users list",
          indent: true,
          hint: "Show most recent message timestamps in the active user list.",
          boolValue: 'active-user-list-timestamps'
        }
      ]
    });
    /**
       Build UI for config options...
    */
    settingsOps.forEach(function f(op,indentOrIndex){
      const menuEntry = D.addClass(D.div(), 'menu-entry');
      if(true===indentOrIndex) D.addClass(menuEntry, 'child');
      const label = op.label
            ? D.append(D.label(),op.label) : undefined;
      const labelWrapper = D.addClass(D.div(), 'label-wrapper');
      var hint;
      if(op.hint){
        hint = D.append(D.addClass(D.label(),'hint'),op.hint);
      }
      if(op.hasOwnProperty('select')){
        const col0 = D.addClass(D.span(/*empty, but for spacing*/),
                                'toggle-wrapper');
        D.append(menuEntry, labelWrapper, col0);
        D.append(labelWrapper, op.select);
        if(hint) D.append(labelWrapper, hint);
        if(label) D.append(label);
        if(op.callback){
          op.select.addEventListener('change', (ev)=>op.callback(ev), false);
        }
      }else if(op.hasOwnProperty('boolValue')){
        if(undefined === f.$id) f.$id = 0;
        ++f.$id;
        if('string' ===typeof op.boolValue){
          const key = op.boolValue;
          op.boolValue = ()=>Chat.settings.getBool(key);
          op.persistentSetting = key;
        }
        const check = op.checkbox
              = D.attr(D.checkbox(1, op.boolValue()),
                       'aria-label', op.label);
        const id = 'cfgopt'+f.$id;
        const col0 = D.addClass(D.span(), 'toggle-wrapper');
        check.checked = op.boolValue();
        op.checkbox = check;
        D.attr(check, 'id', id);
        if(hint) D.attr(hint, 'for', id);
        D.append(menuEntry, labelWrapper, col0);
        D.append(col0, check);
        if(label){
          D.attr(label, 'for', id);
          D.append(labelWrapper, label);
        }
        if(hint) D.append(labelWrapper, hint);
      }else{
        if(op.callback){
          menuEntry.addEventListener('click', (ev)=>op.callback(ev));
        }
        D.append(menuEntry, labelWrapper);
        if(label) D.append(labelWrapper, label);
        if(hint) D.append(labelWrapper, hint);
      }
      D.append(optionsMenu, menuEntry);
      if(op.persistentSetting){
        Chat.settings.addListener(
          op.persistentSetting,
          function(setting){
            if(op.checkbox) op.checkbox.checked = !!setting.value;
            else if(op.select) op.select.value = setting.value;
            if(op.callback) op.callback(setting);
          }
        );
        if(op.checkbox){
          op.checkbox.addEventListener(
            'change', function(){
              Chat.settings.set(op.persistentSetting, op.checkbox.checked)
            }, false);
        }
      }else if(op.callback && op.checkbox){
        op.checkbox.addEventListener('change', (ev)=>op.callback(ev), false);
      }
      if(op.children){
        D.addClass(menuEntry, 'parent');
        op.children.forEach((x)=>f(x,true));
      }
    });
  })()/*#chat-button-settings setup*/;

  (function(){
    /* Install default settings... must come after
       chat-button-settings setup so that the listeners which that
       installs are notified via the properties getting initialized
       here. */
    Chat.settings.addListener('monospace-messages',function(s){
      document.body.classList[s.value ? 'add' : 'remove']('monospace-messages');
    })
    Chat.settings.addListener('active-user-list',function(s){
      Chat.showActiveUserList(s.value);
    });
    Chat.settings.addListener('active-user-list-timestamps',function(s){
      Chat.showActiveUserTimestamps(s.value);
    });
    Chat.settings.addListener('chat-only-mode',function(s){
      Chat.chatOnlyMode(s.value);
    });
    Chat.settings.addListener('edit-widget-x',function(s){
      let eSelected;
      if(s.value){
        if(Chat.e.inputX===Chat.inputElement()) return;
        eSelected = Chat.e.inputX;
      }else{
        eSelected = Chat.settings.getBool('edit-compact-mode')
          ? Chat.e.input1 : Chat.e.inputM;
      }
      const v = Chat.inputValue();
      Chat.inputValue('');
      Chat.e.inputFields.forEach(function(e,ndx){
        if(eSelected===e){
          Chat.e.inputFields.$currentIndex = ndx;
          D.removeClass(e, 'hidden');
        }
        else D.addClass(e,'hidden');
      });
      Chat.inputValue(v);
      eSelected.focus();
    });
    Chat.settings.addListener('edit-compact-mode',function(s){
      if(Chat.e.inputX!==Chat.inputElement()){
        /* Text field/textarea mode: swap them if needed.
           Compact mode of inputX is toggled via CSS. */
        const a = s.value
              ? [Chat.e.input1, Chat.e.inputM, 0]
              : [Chat.e.inputM, Chat.e.input1, 1];
        const v = Chat.inputValue();
        Chat.inputValue('');
        Chat.e.inputFields.$currentIndex = a[2];
        Chat.inputValue(v);
        D.removeClass(a[0], 'hidden');
        D.addClass(a[1], 'hidden');
      }
      Chat.e.inputElementWrapper.classList[
        s.value ? 'add' : 'remove'
      ]('compact');
      Chat.e.inputFields[Chat.e.inputFields.$currentIndex].focus();
    });
    Chat.settings.addListener('edit-ctrl-send',function(s){
      const label = (s.value ? "Ctrl-" : "")+"Enter submits message";
      Chat.e.inputFields.forEach((e)=>{
        const v = e.dataset.placeholder0 + " " +label;
        if(e.isContentEditable) e.dataset.placeholder = v;
        else D.attr(e,'placeholder',v);
      });
      Chat.e.btnSubmit.title = label;
    });
    const valueKludges = {
      /* Convert certain string-format values to other types... */
      "false": false,
      "true": true
    };
    Object.keys(Chat.settings.defaults).forEach(function(k){
      var v = Chat.settings.get(k,Chat);
      if(Chat===v) v = Chat.settings.defaults[k];
      if(valueKludges.hasOwnProperty(v)) v = valueKludges[v];
      Chat.settings.set(k,v)
      /* fires event listeners so that the Config area checkboxes
         get in sync */;
    });
  })();

  (function(){/*set up message preview*/
    const btnPreview = Chat.e.btnPreview;
    Chat.setPreviewText = function(t){
      this.setCurrentView(this.e.viewPreview);
      this.e.previewContent.innerHTML = t;
      this.e.viewPreview.querySelectorAll('a').forEach(addAnchorTargetBlank);
      this.inputFocus();
    };
    Chat.e.viewPreview.querySelector('button.action-close').
      addEventListener('click', ()=>Chat.setCurrentView(Chat.e.viewMessages), false);
    let previewPending = false;
    const elemsToEnable = [btnPreview, Chat.e.btnSubmit, Chat.e.inputFields];
    const submit = function(ev){
      ev.preventDefault();
      ev.stopPropagation();
      if(previewPending) return false;
      const txt = Chat.inputValue();
      if(!txt){
        Chat.setPreviewText('');
        previewPending = false;
        return false;
      }
      const fd = new FormData();
      fd.append('content', txt);
      fd.append('filename','chat.md'
                /*filename needed for mimetype determination*/);
      fd.append('render_mode',F.page.previewModes.wiki);
      F.fetch('ajax/preview-text',{
        payload: fd,
        onload: function(html){
          Chat.setPreviewText(html);
          F.pikchr.addSrcView(Chat.e.viewPreview.querySelectorAll('svg.pikchr'));
        },
        onerror: function(e){
          F.fetch.onerror(e);
          Chat.setPreviewText("ERROR: "+(
            e.message || 'Unknown error fetching preview!'
          ));
        },
        beforesend: function(){
          D.disable(elemsToEnable);
          Chat.ajaxStart();
          previewPending = true;
          Chat.setPreviewText("Loading preview...");
        },
        aftersend:function(){
          previewPending = false;
          Chat.ajaxEnd();
          D.enable(elemsToEnable);
        }
      });
      return false;
    };
    btnPreview.addEventListener('click', submit, false);
  })()/*message preview setup*/;

  (function(){/*Set up #chat-search and related bits */
    const btn = document.querySelector('#chat-button-search');
    D.attr(btn, 'role', 'button').addEventListener('click', function(ev){
      ev.preventDefault();
      ev.stopPropagation();
      const msg = Chat.inputValue();
      if( Chat.e.currentView===Chat.e.viewSearch ){
        if( msg ) Chat.submitSearch();
        else Chat.setCurrentView(Chat.e.viewMessages);
      }else{
        Chat.setCurrentView(Chat.e.viewSearch);
        if( msg ) Chat.submitSearch();
      }
      return false;
    }, false);
    Chat.e.viewSearch.querySelector('button.action-clear').addEventListener('click', function(ev){
      ev.preventDefault();
      ev.stopPropagation();
      Chat.clearSearch(true);
      Chat.setCurrentView(Chat.e.viewMessages);
      return false;
    }, false);
    Chat.e.viewSearch.querySelector('button.action-close').addEventListener('click', function(ev){
      ev.preventDefault();
      ev.stopPropagation();
      Chat.setCurrentView(Chat.e.viewMessages);
      return false;
    }, false);
  })()/*search view setup*/;

  /** Callback for poll() to inject new content into the page.  jx ==
      the response from /chat-poll. If atEnd is true, the message is
      appended to the end of the chat list (for loading older
      messages), else the beginning (the default). */
  const newcontent = function f(jx,atEnd){
    if(!f.processPost){
      /** Processes chat message m, placing it either the start (if atEnd
          is falsy) or end (if atEnd is truthy) of the chat history. atEnd
          should only be true when loading older messages. */
      f.processPost = function(m,atEnd){
        ++Chat.totalMessageCount;
        if( m.msgid>Chat.mxMsg ) Chat.mxMsg = m.msgid;
        if( !Chat.mnMsg || m.msgid<Chat.mnMsg) Chat.mnMsg = m.msgid;
        if(m.xfrom && m.mtime){
          const d = new Date(m.mtime);
          const uls = Chat.usersLastSeen[m.xfrom];
          if(!uls || uls<d){
            d.$uColor = m.uclr;
            Chat.usersLastSeen[m.xfrom] = d;
          }
        }
        if( m.mdel ){
          /* A record deletion notice. */
          Chat.deleteMessageElem(m.mdel);
          return;
        }
        if(!Chat._isBatchLoading
           && (Chat.me!==m.xfrom
               || Chat.settings.getBool('alert-own-messages'))){
          Chat.playNewMessageSound();
        }
        const row = new Chat.MessageWidget(m);
        Chat.injectMessageElem(row.e.body,atEnd);
        if(m.isError){
          Chat._gotServerError = m;
        }
      }/*processPost()*/;
    }/*end static init*/
    jx.msgs.forEach((m)=>f.processPost(m,atEnd));
    Chat.updateActiveUserList();
    if('visible'===document.visibilityState){
      if(Chat.changesSincePageHidden){
        Chat.changesSincePageHidden = 0;
        Chat.e.pageTitle.innerText = Chat.pageTitleOrig;
      }
    }else{
      Chat.changesSincePageHidden += jx.msgs.length;
      if(jx.msgs.length){
        Chat.e.pageTitle.innerText = '[*] '+Chat.pageTitleOrig;
      }
    }
  }/*newcontent()*/;
  Chat.newContent = newcontent;

  (function(){
    /** Add toolbar for loading older messages. We use a FIELDSET here
        because a fieldset is the only parent element type which can
        automatically enable/disable its children by
        enabling/disabling the parent element. */
    const loadLegend = D.legend("Load...");
    const toolbar = Chat.e.loadOlderToolbar = D.attr(
      D.fieldset(loadLegend), "id", "load-msg-toolbar"
    );
    Chat.disableDuringAjax.push(toolbar);
    /* Loads the next n oldest messages, or all previous history if n is negative. */
    const loadOldMessages = function(n){
      Chat.e.viewMessages.classList.add('loading');
      Chat._isBatchLoading = true;
      const scrollHt = Chat.e.viewMessages.scrollHeight,
            scrollTop = Chat.e.viewMessages.scrollTop;
      F.fetch("chat-poll",{
        urlParams:{
          before: Chat.mnMsg,
          n: n
        },
        responseType: 'json',
        onerror:function(err){
          Chat.reportErrorAsMessage(err);
          Chat._isBatchLoading = false;
        },
        onload:function(x){
          let gotMessages = x.msgs.length;
          newcontent(x,true);
          Chat._isBatchLoading = false;
          Chat.updateActiveUserList();
          if(Chat._gotServerError){
            Chat._gotServerError = false;
            return;
          }
          if(n<0/*we asked for all history*/
             || 0===gotMessages/*we found no history*/
             || (n>0 && gotMessages<n /*we got fewer history entries than requested*/)
             || (n===0 && gotMessages<Chat.loadMessageCount
                 /*we asked for default amount and got fewer than that.*/)){
            /* We've loaded all history. Permanently disable the
               history-load toolbar and keep it from being re-enabled
               via the ajaxStart()/ajaxEnd() mechanism... */
            const div = Chat.e.loadOlderToolbar.querySelector('div');
            D.append(D.clearElement(div), "All history has been loaded.");
            D.addClass(Chat.e.loadOlderToolbar, 'all-done');
            const ndx = Chat.disableDuringAjax.indexOf(Chat.e.loadOlderToolbar);
            if(ndx>=0) Chat.disableDuringAjax.splice(ndx,1);
            Chat.e.loadOlderToolbar.disabled = true;
          }
          if(gotMessages > 0){
            F.toast.message("Loaded "+gotMessages+" older messages.");
            /* Return scroll position to where it was when the history load
               was requested, per user request */
            Chat.e.viewMessages.scrollTo(
              0, Chat.e.viewMessages.scrollHeight - scrollHt + scrollTop
            );
          }
        },
        aftersend:function(){
          Chat.e.viewMessages.classList.remove('loading');
          Chat.ajaxEnd();
        }
      });
    };
    const wrapper = D.div(); /* browsers don't all properly handle >1 child in a fieldset */;
    D.append(toolbar, wrapper);
    var btn = D.button("Previous "+Chat.loadMessageCount+" messages");
    D.append(wrapper, btn);
    btn.addEventListener('click',()=>loadOldMessages(Chat.loadMessageCount));
    btn = D.button("All previous messages");
    D.append(wrapper, btn);
    btn.addEventListener('click',()=>loadOldMessages(-1));
    D.append(Chat.e.viewMessages, toolbar);
    toolbar.disabled = true /*will be enabled when msg load finishes */;
  })()/*end history loading widget setup*/;

  /**
     Clears the search result view. If addInstructions is true it adds
     text to that view instructing the user to enter their query into
     the message-entry widget (noting that that widget has text
     implying that it's only for submitting a message, which isn't
     exactly true when the search view is active).

     Returns the DOM element which wraps all of the chat search
     result elements.
  */
  Chat.clearSearch = function(addInstructions=false){
    const e = D.clearElement( this.e.searchContent );
    if(addInstructions){
      D.append(e, "Enter search terms in the message field. "+
               "Use #NNNNN to search for the message with ID NNNNN.");
    }
    return e;
  };
  Chat.clearSearch(true);
  /**
     Submits a history search using the main input field's current
     text. It is assumed that Chat.e.viewSearch===Chat.e.currentView.
  */
  Chat.submitSearch = function(){
    const term = this.inputValue(true);
    const eMsgTgt = this.clearSearch(true);
    if( !term ) return;
    D.append( eMsgTgt, "Searching for ",term," ...");
    const fd = new FormData();
    fd.set('q', term);
    F.fetch(
      "chat-query", {
        payload: fd,
        responseType: 'json',
        onerror:function(err){
          Chat.setCurrentView(Chat.e.viewMessages);
          Chat.reportErrorAsMessage(err);
        },
        onload:function(jx){
          let previd = 0;
          D.clearElement(eMsgTgt);
          jx.msgs.forEach((m)=>{
            m.isSearchResult = true;
            const mw = new Chat.MessageWidget(m);
            const spacer = new Chat.SearchCtxLoader({
              first: jx.first,
              last: jx.last,
              previd: previd,
              nextid: m.msgid
            });
            if( spacer.e ) D.append( eMsgTgt, spacer.e.body );
            D.append( eMsgTgt, mw.e.body );
            previd = m.msgid;
          });
          if( jx.msgs.length ){
            const spacer = new Chat.SearchCtxLoader({
              first: jx.first,
              last: jx.last,
              previd: previd,
              nextid: 0
            });
            if( spacer.e ) D.append( eMsgTgt, spacer.e.body );
          }else{
            D.append( D.clearElement(eMsgTgt),
                      'No search results found for: ',
                      term );
          }
        }
      }
    );
  }/*Chat.submitSearch()*/;

  const afterFetch = function f(){
    if(true===f.isFirstCall){
      f.isFirstCall = false;
      Chat.ajaxEnd();
      Chat.e.viewMessages.classList.remove('loading');
      setTimeout(function(){
        Chat.scrollMessagesTo(1);
      }, 250);
    }
    if(Chat._gotServerError && Chat.intervalTimer){
      clearInterval(Chat.intervalTimer);
      Chat.reportErrorAsMessage(
        "Shutting down chat poller due to server-side error. ",
        "Reload this page to reactivate it.");
      delete Chat.intervalTimer;
    }
    poll.running = false;
  };
  afterFetch.isFirstCall = true;
  /**
     FIXME: when polling fails because the remote server is
     reachable but it's not accepting HTTP requests, we should back
     off on polling for a while. e.g. if the remote web server process
     is killed, the poll fails quickly and immediately retries,
     hammering the remote server until the httpd is back up. That
     happens often during development of this application.

     XHR does not offer a direct way of distinguishing between
     HTTP/connection errors, but we can hypothetically use the
     xhrRequest.status value to do so, with status==0 being a
     connection error. We do not currently have a clean way of passing
     that info back to the fossil.fetch() client, so we'll need to
     hammer on that API a bit to get this working.
  */
  const poll = async function f(){
    if(f.running) return;
    f.running = true;
    Chat._isBatchLoading = f.isFirstCall;
    if(true===f.isFirstCall){
      f.isFirstCall = false;
      Chat.ajaxStart();
      Chat.e.viewMessages.classList.add('loading');
    }
    F.fetch("chat-poll",{
      timeout: 420 * 1000/*FIXME: get the value from the server*/,
      urlParams:{
        name: Chat.mxMsg
      },
      responseType: "json",
      // Disable the ajax start/end handling for this long-polling op:
      beforesend: function(){},
      aftersend: function(){},
      onerror:function(err){
        Chat._isBatchLoading = false;
        if(Chat.verboseErrors) console.error(err);
        /* ^^^ we don't use Chat.reportError() here b/c the polling
           fails exepectedly when it times out, but is then immediately
           resumed, and reportError() produces a loud error message. */
        afterFetch();
      },
      onload:function(y){
        newcontent(y);
        if(Chat._isBatchLoading){
          Chat._isBatchLoading = false;
          Chat.updateActiveUserList();
        }
        afterFetch();
      }
    });
  };
  poll.isFirstCall = true;
  Chat._gotServerError = poll.running = false;
  if( window.fossil.config.chat.fromcli ){
    Chat.chatOnlyMode(true);
  }
  Chat.intervalTimer = setInterval(poll, 1000);
  delete ForceResizeKludge.$disabled;
  ForceResizeKludge();
  Chat.animate.$disabled = false;
  setTimeout( ()=>Chat.inputFocus(), 0 );
  F.page.chat = Chat/* enables testing the APIs via the dev tools */;
});
Added src/fossil.page.fileedit.js.





































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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(function(F/*the fossil object*/){
  "use strict";
  /**
     Client-side implementation of the /filepage app. Requires that
     the fossil JS bootstrapping is complete and that several fossil
     JS APIs have been installed: fossil.fetch, fossil.dom,
     fossil.tabs, fossil.storage, fossil.confirmer.

     Custom events which can be listened for via
     fossil.page.addEventListener():

     - Event 'fileedit-file-loaded': passes on information when it
     loads a file (whether from the network or its internal local-edit
     cache), in the form of an "finfo" object:

     {
       filename: string,
       checkin: UUID string,
       branch: branch name of UUID,
       isExe: bool, true only for executable files
       mimetype: mimetype string, as determined by the fossil server.
     }

     The internal docs and code frequently use the term "finfo", and such
     references refer to an object with that form.

     The fossil.page.fileContent() method gets or sets the current file
     content for the page.

     - Event 'fileedit-committed': is fired when a commit completes,
     passing on the same info as fileedit-file-loaded.

     - Event 'fileedit-content-replaced': when the editor's content is
     replaced, as opposed to it being edited via user
     interaction. This normally happens via selecting a file to
     load. The event detail is the fossil.page object, not the current
     file content.

     - Event 'fileedit-preview-updated': when the preview is refreshed
     from the server, this event passes on information about the preview
     change in the form of an object:

     {
     element: the DOM element which contains the content preview.

     mimetype: the fossil-reported content mimetype.

     previewMode: a string describing the preview mode: see
       the fossil.page.previewModes map for the values. This can
       be used to determine whether, e.g., the content is suitable
       for applying a 3rd-party code highlighting API to.
     }

     Here's an example which can be used with the highlightjs code
     highlighter to update the highlighting when the preview is
     refreshed in "wiki" mode (which includes fossil-native wiki and
     markdown):

     fossil.page.addEventListener(
       'fileedit-preview-updated',
       (ev)=>{
         if(ev.detail.previewMode==='wiki'){
           ev.detail.element.querySelectorAll(
             'code[class^=language-]'
           ).forEach((e)=>hljs.highlightBlock(e));
         }
       }
     );
  */
  const E = (s)=>document.querySelector(s),
        D = F.dom,
        P = F.page;

  P.config = {
    defaultMaxStashSize: 7,
    /**
       See notes for this setting in fossil.page.wikiedit.js. Both
       /wikiedit and /fileedit share this persistent config option
       under the same storage key.
    */
    shiftEnterPreview: F.storage.getBool('edit-shift-enter-preview', true)
  };

  /**
     $stash is an internal-use-only object for managing "stashed"
     local edits, to help avoid that users accidentally lose content
     by switching tabs or following links or some such. The basic
     theory of operation is...

     All "stashed" state is stored using fossil.storage.

     - When the current file content is modified by the user, the
       current stathe of the current P.finfo and its the content
       is stashed. For the built-in editor widget, "changes" is
       notified via a 'change' event.  For a client-side custom
       widget, the client needs to call P.stashContentChange() when
       their widget triggers the equivalent of a 'change' event.

     - For certain non-content updates (as of this writing, only the
       is-executable checkbox), only the P.finfo stash entry is
       updated, not the content (unless the content has not yet been
       stashed, in which case it is also stashed so that the stash
       always has matching pairs of finfo/content).

     - When saving, the stashed entry for the previous version is removed
       from the stash.

     - When "loading", we use any stashed state for the given
       checkin/file combination. When forcing a re-load of content,
       any stashed entry for that combination is removed from the
       stash.

     - Every time P.stashContentChange() updates the stash, it is
       pruned to $stash.prune.defaultMaxCount most-recently-updated
       entries.

     - This API often refers to "finfo objects." Those are objects
       with a minimum of {checkin,filename} properties (which must be
       valid), and a combination of those two properties is used as
       basis for the stash keys for any given checkin/filename
       combination.

     The structure of the stash is a bit convoluted for efficiency's
     sake: we store a map of file info (finfo) objects separately from
     those files' contents because otherwise we would be required to
     JSONize/de-JSONize the file content when stashing/restoring it,
     and that would be horribly inefficient (meaning "battery-consuming"
     on mobile devices).
  */
  const $stash = {
    keys: {
      index: F.page.name+'.index'
    },
    /**
       index: {
       "CHECKIN_HASH:FILENAME": {file info w/o content}
       ...
       }

       In F.storage we...

       - Store this.index under the key this.keys.index.

       - Store each file's content under the key
       (P.name+'/CHECKIN_HASH:FILENAME'). These are stored separately
       from the index entries to avoid having to JSONize/de-JSONize
       the content. The assumption/hope is that the browser can store
       those records "directly," without any intermediary
       encoding/decoding going on.
    */
    indexKey: function(finfo){return finfo.checkin+':'+finfo.filename},
    /** Returns the key for storing content for the given key suffix,
        by prepending P.name to suffix. */
    contentKey: function(suffix){return P.name+'/'+suffix},
    /** Returns the index object, fetching it from the stash or creating
        it anew on the first call. */
    getIndex: function(){
      if(!this.index){
        this.index = F.storage.getJSON(
          this.keys.index, {}
        );
      }
      return this.index;
    },
    _fireStashEvent: function(){
      if(this._disableNextEvent) delete this._disableNextEvent;
      else F.page.dispatchEvent('fileedit-stash-updated', this);
    },
    /**
       Returns the stashed version, if any, for the given finfo object.
    */
    getFinfo: function(finfo){
      const ndx = this.getIndex();
      return ndx[this.indexKey(finfo)];
    },
    /** Serializes this object's index to F.storage. Returns this. */
    storeIndex: function(){
      if(this.index) F.storage.setJSON(this.keys.index,this.index);
      return this;
    },
    /** Updates the stash record for the given finfo
        and (optionally) content. If passed 1 arg, only
        the finfo stash is updated, else both the finfo
        and its contents are (re-)stashed. Returns this.
    */
    updateFile: function(finfo,content){
      const ndx = this.getIndex(),
            key = this.indexKey(finfo),
            old = ndx[key];
      const record = old || (ndx[key]={
        checkin: finfo.checkin,
        filename: finfo.filename,
        mimetype: finfo.mimetype
      });
      record.isExe = !!finfo.isExe;
      record.stashTime = new Date().getTime();
      if(!record.branch) record.branch=finfo.branch;
      this.storeIndex();
      if(arguments.length>1){
        F.storage.set(this.contentKey(key), content);
      }
      this._fireStashEvent();
      return this;
    },
    /**
       Returns the stashed content, if any, for the given finfo
       object.
    */       
    stashedContent: function(finfo){
      return F.storage.get(this.contentKey(this.indexKey(finfo)));
    },
    /** Returns true if we have stashed content for the given finfo
        record. */
    hasStashedContent: function(finfo){
      return F.storage.contains(this.contentKey(this.indexKey(finfo)));
    },
    /** Unstashes the given finfo record and its content.
        Returns this. */
    unstash: function(finfo){
      const ndx = this.getIndex(),
            key = this.indexKey(finfo);
      delete finfo.stashTime;
      delete ndx[key];
      F.storage.remove(this.contentKey(key));
      this.storeIndex();
      this._fireStashEvent();
      return this;
    },
    /**
       Clears all $stash entries from F.storage. Returns this.
     */
    clear: function(){
      const ndx = this.getIndex(),
            self = this;
      let count = 0;
      Object.keys(ndx).forEach(function(k){
        ++count;
        const e = ndx[k];
        delete ndx[k];
        F.storage.remove(self.contentKey(k));
      });
      F.storage.remove(this.keys.index);
      delete this.index;
      if(count) this._fireStashEvent();
      return this;
    },
    /**
       Removes all but the maxCount most-recently-updated stash
       entries, where maxCount defaults to this.prune.defaultMaxCount.
    */
    prune: function f(maxCount){
      const ndx = this.getIndex();
      const li = [];
      if(!maxCount || maxCount<0) maxCount = f.defaultMaxCount;
      Object.keys(ndx).forEach((k)=>li.push(ndx[k]));
      li.sort((l,r)=>l.stashTime - r.stashTime);
      let n = 0;
      while(li.length>maxCount){
        ++n;
        const e = li.shift();
        this._disableNextEvent = true;
        this.unstash(e);
        console.warn("Pruned oldest local file edit entry:",e);
      }
      if(n) this._fireStashEvent();
    }
  };
  $stash.prune.defaultMaxCount = P.config.defaultMaxStashSize;

  /**
     Widget for the checkin/file selection list.
  */
  P.fileSelectWidget = {
    e:{
      container: E('#fileedit-file-selector')
    },
    finfo: {},
    cache: {
      checkins: undefined,
      files:{},
      branchKey: 'fileedit/uuid-branches',
      branchNames: {}
    },
    /**
       Fetches the list of leaf checkins from the server and updates
       the UI with that list.
    */
    loadLeaves: function(){
      D.append(D.clearElement(
        this.e.ciListLabel,
        this.e.selectCi,
        this.e.selectFiles
      ),"Loading leaves...");
      D.disable(this.e.btnLoadFile, this.e.selectFiles, this.e.selectCi); 
      const self = this;
      const onload = function(list){
        D.append(D.clearElement(self.e.ciListLabel),
                 "Open leaves (newest first):");
        self.cache.checkins = list;
        D.clearElement(D.enable(self.e.selectCi));
        let loadThisOne = P.initialFiles/*possibly injected at page-load time*/;
        if(loadThisOne){
          self.cache.files[loadThisOne.checkin] = loadThisOne;
          delete P.initialFiles;
        }
        list.forEach(function(o,n){
          if(!n && !loadThisOne) loadThisOne = o;
          self.cache.branchNames[F.hashDigits(o.checkin,true)] = o.branch;
          D.option(self.e.selectCi, o.checkin,
                   o.timestamp+' ['+o.branch+']: '
                   +F.hashDigits(o.checkin));
        });
        F.storage.setJSON(self.cache.branchKey, self.cache.branchNames);
        if(loadThisOne){
          self.e.selectCi.value = loadThisOne.checkin;
        }
        self.loadFiles(loadThisOne ? loadThisOne.checkin : false);
      };
      if(P.initialLeaves/*injected at page-load time.*/){
        const lv = P.initialLeaves;
        delete P.initialLeaves;
        onload(lv);
      }else{
        F.fetch('fileedit/filelist',{
          urlParams:'leaves',
          responseType: 'json',
          onload: onload
        });
      }
    },
    /**
       Loads the file list for the given checkin UUID. It uses a
       cached copy on subsequent calls for the same UUID. If passed a
       falsy value, it instead clears and disables the file selection
       list.
    */
    loadFiles: function(ciUuid){
      delete this.finfo.filename;
      this.finfo.checkin = ciUuid;
      const selFiles = this.e.selectFiles;
      if(!ciUuid){
        D.clearElement(D.disable(selFiles, this.e.btnLoadFile));
        return this;
      }
      const onload = (response)=>{
        D.clearElement(selFiles);
        D.append(
          D.clearElement(this.e.fileListLabel),
          "Editable files for ",
          D.append(
            D.code(), "[",
            D.a(F.repoUrl('timeline',{
              c: ciUuid
            }), F.hashDigits(ciUuid)),"]"
          ), ":"
        );
        this.cache.files[response.checkin] = response;
        response.editableFiles.forEach(function(fn,n){
          D.option(selFiles, fn);
        });
        if(selFiles.options.length){
          D.enable(selFiles, this.e.btnLoadFile);
        }
      };
      const got = this.cache.files[ciUuid];
      if(got){
        onload(got);
        return this;
      }
      D.disable(selFiles,this.e.btnLoadFile);
      D.clearElement(selFiles);
      D.append(D.clearElement(this.e.fileListLabel),
               "Loading files for "+F.hashDigits(ciUuid)+"...");
      F.fetch('fileedit/filelist',{
        urlParams:{checkin: ciUuid},
        responseType: 'json',
        onload
      });
      return this;
    },

    /**
       If this object has ever loaded the given checkin version via
       loadLeaves(), this returns the branch name associated with that
       version, else returns undefined;
     */
    checkinBranchName: function(uuid){
      return this.cache.branchNames[F.hashDigits(uuid,true)];
    },

    /**
       Initializes the checkin/file selector widget. Must only be
       called once.
    */
    init: function(){
      this.cache.branchNames = F.storage.getJSON(this.cache.branchKey, {});
      const selCi = this.e.selectCi = D.addClass(D.select(), 'flex-grow'),
            selFiles = this.e.selectFiles
            = D.addClass(D.select(), 'file-list'),
            btnLoad = this.e.btnLoadFile =
            D.addClass(D.button("Load file"), "flex-shrink"),
            filesLabel = this.e.fileListLabel =
            D.addClass(D.div(),'flex-shrink','file-list-label'),
            ciLabelWrapper = D.addClass(
              D.div(), 'flex-container','flex-row', 'flex-shrink',
              'stretch', 'child-gap-small'
            ),
            btnReload = D.addClass(
              D.button('Reload'), 'flex-shrink'
            ),
            ciLabel = this.e.ciListLabel =
            D.addClass(D.span(),'flex-shrink','checkin-list-label')
      ;
      D.attr(selCi, 'title',"The list of opened leaves.");
      D.attr(selFiles, 'title',
             "The list of editable files for the selected checkin.");
      D.attr(btnLoad, 'title',
             "Load the selected file into the editor.");
      D.disable(selCi, selFiles, btnLoad);
      D.attr(selFiles, 'size', 12);
      D.append(
        this.e.container,
        ciLabel,
        D.append(ciLabelWrapper,
                 selCi,
                 btnReload),
        filesLabel,
        selFiles,
        /* Use a wrapper for btnLoad so that the button itself does not
          stretch to fill the parent width: */
        D.append(D.addClass(D.div(), 'flex-shrink'), btnLoad)
      );
      if(F.config['fileedit-glob']){
        D.append(
          this.e.container,
          D.append(
            D.span(),
            D.append(D.code(),"fileedit-glob"),
            " config setting = ",
            D.append(D.code(), JSON.stringify(F.config['fileedit-glob']))
          )
        );
      }

      this.loadLeaves();
      selCi.addEventListener(
        'change', (e)=>this.loadFiles(e.target.value), false
      );
      const doLoad = (e)=>{
        this.finfo.filename = selFiles.value;
        if(this.finfo.filename){
          P.loadFile(this.finfo.filename, this.finfo.checkin);
        }
      };
      btnLoad.addEventListener('click', doLoad, false);
      selFiles.addEventListener('dblclick', doLoad, false);
      btnReload.addEventListener(
        'click', (e)=>this.loadLeaves(), false
      );
      delete this.init;
    }
  }/*P.fileSelectWidget*/;

  /**
     Widget for listing and selecting $stash entries.
  */
  P.stashWidget = {
    e:{/*DOM element(s)*/},
    init: function(domInsertPoint/*insert widget BEFORE this element*/){
      const wrapper = D.addClass(
        D.attr(D.div(),'id','fileedit-stash-selector'),
        'input-with-label'
      );
      const sel = this.e.select = D.select();
      const btnClear = this.e.btnClear = D.button("Discard Edits"),
            btnHelp = D.append(
              D.addClass(D.div(), "help-buttonlet"),
              'Locally-edited files. Timestamps are the last local edit time. ',
              'Only the ',P.config.defaultMaxStashSize,' most recent files ',
              'are retained. Saving or reloading a file removes it from this list. ',
              D.append(D.code(),F.storage.storageImplName()),
              ' = ',F.storage.storageHelpDescription()
            );

      D.append(wrapper, "Local edits (",
               D.append(D.code(),
                        F.storage.storageImplName()),
               "):",
               btnHelp, sel, btnClear);
      F.helpButtonlets.setup(btnHelp);
      D.option(D.disable(sel), undefined, "(empty)");
      F.page.addEventListener('fileedit-stash-updated',(e)=>this.updateList(e.detail));
      F.page.addEventListener('fileedit-file-loaded',(e)=>this.updateList($stash, e.detail));
      sel.addEventListener('change',function(e){
        const opt = this.selectedOptions[0];
        if(opt && opt._finfo) P.loadFile(opt._finfo);
      });
      if(F.storage.isTransient()){/*Warn if our storage is particularly transient...*/
        D.append(wrapper, D.append(
          D.addClass(D.span(),'warning'),
          "Warning: persistent storage is not available, "+
            "so uncomitted edits will not survive a page reload."
        ));
      }
      domInsertPoint.parentNode.insertBefore(wrapper, domInsertPoint);
      P.tabs.switchToTab(1/*DOM visibility workaround*/);
      F.confirmer(btnClear, {
        /* must come after insertion into the DOM for the pinSize option to work. */
        pinSize: true,
        confirmText: "DISCARD all local edits?",
        onconfirm: function(e){
          if(P.finfo){
            const stashed = P.getStashedFinfo(P.finfo);
            P.clearStash();
            if(stashed) P.loadFile(/*reload after discarding edits*/);
          }else{
            P.clearStash();
          }
        },
        ticks: F.config.confirmerButtonTicks
      });
      D.addClass(this.e.btnClear,'hidden' /* must not be set until after confirmer is set up!*/);
      $stash._fireStashEvent(/*read the page-load-time stash*/);
      P.tabs.switchToTab(0/*DOM visibility workaround*/);
      delete this.init;
    },
    /**
       Regenerates the edit selection list.
     */
    updateList: function f(stasher,theFinfo){
      if(!f.compare){
        const cmpBase = (l,r)=>l<r ? -1 : (l===r ? 0 : 1);
        f.compare = function(l,r){
          const cmp = cmpBase(l.filename, r.filename);
          return cmp ? cmp : cmpBase(l.checkin, r.checkin);
        };
        f.rxZ = /\.\d+Z$/ /* ms and 'Z' part of date string */;
        const pad=(x)=>(''+x).length>1 ? x : '0'+x;
        f.timestring = function ff(d){
          return [
            d.getFullYear(),'-',pad(d.getMonth()+1/*sigh*/),'-',pad(d.getDate()),
            '@',pad(d.getHours()),':',pad(d.getMinutes())
          ].join('');
        };
      }
      const index = stasher.getIndex(), ilist = [];
      Object.keys(index).forEach((finfo)=>{
        ilist.push(index[finfo]);
      });
      const self = this;
      D.clearElement(this.e.select);
      if(0===ilist.length){
        D.addClass(this.e.btnClear, 'hidden');
        D.option(D.disable(this.e.select),undefined,"No local edits");
        return;
      }
      D.enable(this.e.select);
      D.removeClass(this.e.btnClear, 'hidden');
      D.disable(D.option(this.e.select,0,"Select a local edit..."));
      const currentFinfo = theFinfo || P.finfo || {filename:''};
      ilist.sort(f.compare).forEach(function(finfo,n){
        const key = stasher.indexKey(finfo),
              branch = finfo.branch
              || P.fileSelectWidget.checkinBranchName(finfo.checkin)||'';
        /* Remember that we don't know the branch name for non-leaf versions
           which P.fileSelectWidget() has never seen/cached. */
        const opt = D.option(
          self.e.select, n+1/*value is (almost) irrelevant*/,
          [F.hashDigits(finfo.checkin), ' [',branch||'?branch?','] ',
           f.timestring(new Date(finfo.stashTime)),' ',
           false ? finfo.filename : F.shortenFilename(finfo.filename)
          ].join('')
        );
        opt._finfo = finfo;
        if(0===f.compare(currentFinfo, finfo)){
          D.attr(opt, 'selected', true);
        }
      });
    }
  }/*P.stashWidget*/;

  /**
     Internal workaround to select the current preview mode
     and fire a change event if the value actually changes
     or if forceEvent is truthy.
  */
  P.selectPreviewMode = function(modeValue, forceEvent){
    const s = this.e.selectPreviewMode;
    if(!modeValue) modeValue = s.value;
    else if(s.value != modeValue){
      s.value = modeValue;
      forceEvent = true;
    }
    if(forceEvent){
      // Force UI update
      s.dispatchEvent(new Event('change',{target:s}));
    }
  };

  /**
     Keep track of how many in-flight AJAX requests there are so we
     can disable input elements while any are pending. For
     simplicity's sake we simply disable ALL OF IT while any AJAX is
     pending, rather than disabling operation-specific UI elements,
     which would be a huge maintenance hassle.

     Noting, however, that this global on/off is not *quite*
     pedantically correct. Pedantically speaking. If an element is
     disabled before an XHR starts, this code "should" notice that and
     not include it in the to-re-enable list. That would be annoying
     to do, and becomes impossible to do properly once multiple XHRs
     are in transit and an element is disabled seprately between two
     of those in-transit requests (that would be an unlikely, but
     possible, corner case). As of this writing, the only elements
     which are ever normally programmatically toggled between
     enabled/disabled...

     1) Belong to the file selection list and remain disabled until
     the list of leaves and files are loaded. i.e. they would be
     disabled *anyway* during their own XHR requests.

     2) The stashWidget's SELECT list when no local edits are
     stashed. Curiously, the all-or-nothing re-enabling implemented
     here does not re-enable that particular selection list. That's
     because of timing, though: that widget is "manually" disabled
     when the list is empty, and that list is normally emptied in
     conjunction with an XHR request.
  */
  const ajaxState = {
    count: 0 /* in-flight F.fetch() requests */,
    toDisable: undefined /* elements to disable during ajax activity */
  };
  F.fetch.beforesend = function f(){
    if(!ajaxState.toDisable){
      ajaxState.toDisable = document.querySelectorAll(
        'button, input, select, textarea'
      );
    }
    if(1===++ajaxState.count){
      D.addClass(document.body, 'waiting');
      D.disable(ajaxState.toDisable);
    }
  };
  F.fetch.aftersend = function(){
    if(0===--ajaxState.count){
      D.removeClass(document.body, 'waiting');
      D.enable(ajaxState.toDisable);
    }
  };

  F.onPageLoad(function() {
    P.base = {tag: E('base')};
    P.base.originalHref = P.base.tag.href;
    P.tabs = new F.TabManager('#fileedit-tabs');
    P.e = { /* various DOM elements we work with... */
      taEditor: E('#fileedit-content-editor'),
      taCommentSmall: E('#fileedit-comment'),
      taCommentBig: E('#fileedit-comment-big'),
      taComment: undefined/*gets set to one of taComment{Big,Small}*/,
      ajaxContentTarget: E('#ajax-target'),
      btnCommit: E("#fileedit-btn-commit"),
      btnReload: E("#fileedit-tab-content button.fileedit-content-reload"),
      selectPreviewMode: E('#select-preview-mode select'),
      selectHtmlEmsWrap: E('#select-preview-html-ems'),
      selectEolWrap:  E('#select-eol-style'),
      selectEol:  E('#select-eol-style select[name=eol]'),
      selectFontSizeWrap: E('#select-font-size'),
      selectDiffWS:  E('select[name=diff_ws]'),
      cbLineNumbersWrap: E('#cb-line-numbers'),
      cbAutoPreview: E('#cb-preview-autorefresh'),
      previewTarget: E('#fileedit-tab-preview-wrapper'),
      manifestTarget: E('#fileedit-manifest'),
      diffTarget: E('#fileedit-tab-diff-wrapper'),
      cbIsExe: E('input[type=checkbox][name=exec_bit]'),
      cbManifest: E('input[type=checkbox][name=include_manifest]'),
      editStatus: E('#fileedit-edit-status'),
      tabs:{
        content: E('#fileedit-tab-content'),
        preview: E('#fileedit-tab-preview'),
        diff: E('#fileedit-tab-diff'),
        commit: E('#fileedit-tab-commit'),
        fileSelect: E('#fileedit-tab-fileselect')
      }
    };
    /* Figure out which comment editor to show by default and
       hide the other one. By default we take the one which does
       not have the 'hidden' CSS class. If neither do, we default
       to single-line mode. */
    if(D.hasClass(P.e.taCommentSmall, 'hidden')){
      P.e.taComment = P.e.taCommentBig;
    }else if(D.hasClass(P.e.taCommentBig,'hidden')){
      P.e.taComment = P.e.taCommentSmall;
    }else{
      P.e.taComment = P.e.taCommentSmall;
      D.addClass(P.e.taCommentBig, 'hidden');
    }
    D.removeClass(P.e.taComment, 'hidden');
    P.tabs.addCustomWidget( E('#fossil-status-bar') ).addCustomWidget(P.e.editStatus);
    let currentTab/*used for ctrl-enter switch between editor and preview*/;
    P.tabs.addEventListener(
      /* Set up auto-refresh of the preview tab... */
      'before-switch-to', function(ev){
        currentTab = ev.detail;
        if(ev.detail===P.e.tabs.preview){
          P.baseHrefForFile();
          if(P.previewNeedsUpdate && P.e.cbAutoPreview.checked) P.preview();
        }else if(ev.detail===P.e.tabs.diff){
          /* Work around a weird bug where the page gets wider than
             the window when the diff tab is NOT in view and the
             current SBS diff widget is wider than the window. When
             the diff IS in view then CSS overflow magically reduces
             the page size again. Weird. Maybe FF-specific. Note that
             this weirdness happens even though P.e.diffTarget's parent
             is hidden (and therefore P.e.diffTarget is also hidden).
          */
          D.removeClass(P.e.diffTarget, 'hidden');
        }
      }
    );
    P.tabs.addEventListener(
      /* Set up auto-refresh of the preview tab... */
      'before-switch-from', function(ev){
        if(ev.detail===P.e.tabs.preview){
          P.baseHrefRestore();
        }else if(ev.detail===P.e.tabs.diff){
          /* See notes in the before-switch-to handler. */
          D.addClass(P.e.diffTarget, 'hidden');
        }
      }
    );
    ////////////////////////////////////////////////////////////
    // Trigger preview on Ctrl-Enter. This only works on the built-in
    // editor widget, not a client-provided one.
    P.e.taEditor.addEventListener('keydown',function(ev){
      if(P.config.shiftEnterPreview && ev.shiftKey && 13===ev.keyCode){
        ev.preventDefault();
        ev.stopPropagation();
        P.e.taEditor.blur(/*force change event, if needed*/);
        P.tabs.switchToTab(P.e.tabs.preview);
        if(!P.e.cbAutoPreview.checked){/* If NOT in auto-preview mode, trigger an update. */
          P.preview();
        }
        return false;
      }
    }, false);
    // If we're in the preview tab, have ctrl-enter switch back to the editor.
    document.body.addEventListener('keydown',function(ev){
      if(ev.shiftKey && 13 === ev.keyCode){
        if(currentTab === P.e.tabs.preview){
          ev.preventDefault();
          ev.stopPropagation();
          P.tabs.switchToTab(P.e.tabs.content);
          P.e.taEditor.focus(/*doesn't work for client-supplied editor widget!
                              And it's slow as molasses for long docs, as focus()
                              forces a document reflow.*/);
          return false;
        }
      }
    }, true);

    F.connectPagePreviewers(
      P.e.tabs.preview.querySelector(
        '#btn-preview-refresh'
      )
    );

    const diffButtons = E('#fileedit-tab-diff-buttons');
    diffButtons.querySelector('button.sbs').addEventListener(
      "click",(e)=>P.diff(true), false
    );
    diffButtons.querySelector('button.unified').addEventListener(
      "click",(e)=>P.diff(false), false
    );
    P.e.btnCommit.addEventListener(
      "click",(e)=>P.commit(), false
    );
    P.tabs.switchToTab(1/*DOM visibility workaround*/);
    F.confirmer(P.e.btnReload, {
      pinSize: true,
      confirmText: "Really reload, losing edits?",
      onconfirm: (e)=>P.unstashContent().loadFile(),
      ticks: F.config.confirmerButtonTicks
    });
    E('#comment-toggle').addEventListener(
      "click",(e)=>P.toggleCommentMode(), false
    );

    P.e.taEditor.addEventListener('change', ()=>P.notifyOfChange(), false);
    P.e.cbIsExe.addEventListener(
      'change', ()=>P.stashContentChange(true), false
    );
    
    /**
       Cosmetic: jump through some hoops to enable/disable
       certain preview options depending on the current
       preview mode...
    */
    P.e.selectPreviewMode.addEventListener(
      "change", function(e){
        const mode = e.target.value,
              name = P.previewModes[mode],
              hide = [], unhide = [];
        P.previewModes.current = name;
        if('guess'===name){
          unhide.push(P.e.cbLineNumbersWrap,
                      P.e.selectHtmlEmsWrap);
        }else{
          if('text'===name) unhide.push(P.e.cbLineNumbersWrap);
          else hide.push(P.e.cbLineNumbersWrap);
          if('htmlIframe'===name) unhide.push(P.e.selectHtmlEmsWrap);
          else hide.push(P.e.selectHtmlEmsWrap);
        }
        hide.forEach((e)=>e.classList.add('hidden'));
        unhide.forEach((e)=>e.classList.remove('hidden'));
      }, false
    );
    P.selectPreviewMode(false, true);
    const selectFontSize = E('select[name=editor_font_size]');
    if(selectFontSize){
      selectFontSize.addEventListener(
        "change",function(e){
          const ed = P.e.taEditor;
          ed.className = ed.className.replace(
              /\bfont-size-\d+/g, '' );
          ed.classList.add('font-size-'+e.target.value);
        }, false
      );
      selectFontSize.dispatchEvent(
        // Force UI update
        new Event('change',{target:selectFontSize})
      );
    }

    P.addEventListener(
      // Clear certain views when new content is loaded/set
      'fileedit-content-replaced',
      ()=>{
        P.previewNeedsUpdate = true;
        D.clearElement(P.e.diffTarget, P.e.previewTarget, P.e.manifestTarget);
      }
    );
    P.addEventListener(
      // Clear certain views after a non-dry-run commit
      'fileedit-committed',
      (e)=>{
        if(!e.detail.dryRun){
          D.clearElement(P.e.diffTarget, P.e.previewTarget);
        }
      }
    );

    P.fileSelectWidget.init();
    P.stashWidget.init(
      P.e.tabs.content.lastElementChild
    );

    const cbEditPreview = E('#edit-shift-enter-preview');
    cbEditPreview.addEventListener('change', function(e){
      F.storage.set('edit-shift-enter-preview',
                    P.config.shiftEnterPreview = e.target.checked);
    }, false);
    cbEditPreview.checked = P.config.shiftEnterPreview;
  }/*F.onPageLoad()*/);

  /**
     Getter (if called with no args) or setter (if passed an arg) for
     the current file content.

     The setter form sets the content, dispatches a
     'fileedit-content-replaced' event, and returns this object.
  */
  P.fileContent = function f(){
    if(0===arguments.length){
      return f.get();
    }else{
      f.set(arguments[0] || '');
      this.dispatchEvent('fileedit-content-replaced', this);
      return this;
    }
  };
  /* Default get/set impls for file content */
  P.fileContent.get = function(){return P.e.taEditor.value};
  P.fileContent.set = function(content){P.e.taEditor.value = content};

  /**
     For use when installing a custom editor widget. Pass it the
     getter and setter callbacks to fetch resp. set the content of the
     custom widget. They will be triggered via
     P.fileContent(). Returns this object.
  */
  P.setContentMethods = function(getter, setter){
    this.fileContent.get = getter;
    this.fileContent.set = setter;
    return this;
  };

  /**
     Alerts the editor app that a "change" has happened in the editor.
     When connecting 3rd-party editor widgets to this app, it is (or
     may be) necessary to call this for any "change" events the widget
     emits.  Whether or not "change" means that there were "really"
     edits is irrelevant.

     This function may perform an arbitrary amount of work, so it
     should not be called for every keypress within the editor
     widget. Calling it for "blur" events is generally sufficient, and
     calling it for each Enter keypress is generally reasonable but
     also computationally costly.
  */
  P.notifyOfChange = function(){
    P.stashContentChange();
  };

  /**
     Removes the default editor widget (and any dependent elements)
     from the DOM, adds the given element in its place, removes this
     method from this object, and returns this object.
  */
  P.replaceEditorElement = function(newEditor){
    P.e.taEditor.parentNode.insertBefore(newEditor, P.e.taEditor);
    P.e.taEditor.remove();
    P.e.selectFontSizeWrap.remove();
    delete this.replaceEditorElement;
    return P;
  };

  /**
     If either of...

     - P.previewModes.current==='wiki'

     - P.previewModes.current==='guess' AND the currently-loaded file
     has a mimetype of "text/x-fossil-wiki" or "text/x-markdown".

     ... then this function updates the document's base.href to a
     repo-relative /doc/{{this.finfo.checkin}}/{{directory part of
     this.finfo.filename}}/

     If neither of those conditions applies, this is a no-op.
  */
  P.baseHrefForFile = function f(){
    const fn = this.finfo ? this.finfo.filename : undefined;
    if(!fn) return this;
    if(!f.wikiMimeTypes){
      f.wikiMimeTypes = ["text/x-fossil-wiki", "text/x-markdown"];
    }
    if('wiki'===P.previewModes.current
       || ('guess'===P.previewModes.current
           && f.wikiMimeTypes.indexOf(this.finfo.mimetype)>=0)){
      const a = fn.split('/');
      a.pop();
      this.base.tag.href = F.repoUrl(
        'doc/'+F.hashDigits(this.finfo.checkin)
          +'/'+(a.length ? a.join('/')+'/' : '')
      );
    }
    return this;
  };

  /**
     Sets the document's base.href value to its page-load-time
     setting.
  */
  P.baseHrefRestore = function(){
    P.base.tag.href = P.base.originalHref;
  };

  /**
     Toggles between single- and multi-line comment
     mode.
  */
  P.toggleCommentMode = function(){
    var s, h, c = this.e.taComment.value;
    if(this.e.taComment === this.e.taCommentSmall){
      s = this.e.taCommentBig;
      h = this.e.taCommentSmall;
    }else{
      s = this.e.taCommentSmall;
      h = this.e.taCommentBig;
      /*
        Doing (input[type=text].value = textarea.value) unfortunately
        strips all newlines. To compensate we'll replace each EOL with
        a space. Not ideal. If we were to instead escape them as \n,
        and do the reverse when toggling again, then they would get
        committed as escaped newlines if the user did not first switch
        back to multi-line mode. We cannot blindly unescape the
        newlines, in the off chance that the user actually enters \n
        in the comment.
      */
      c = c.replace(/\r?\n/g,' ');
    }
    s.value = c;
    this.e.taComment = s;
    D.addClass(h, 'hidden');
    D.removeClass(s, 'hidden');
  };

  /**
     Returns true if fossil.page.finfo is set, indicating that a file
     has been loaded, else it reports an error and returns false.

     If passed a truthy value any error message about not having
     a file loaded is suppressed.
  */
  const affirmHasFile = function(quiet){
    if(!P.finfo){
      if(!quiet) F.error("No file is loaded.");
    }
    return !!P.finfo;
  };

  /**
     updateVersion() updates the filename and version in various UI
     elements...

     Returns this object.
  */
  P.updateVersion = function f(file,rev){
    if(!f.eLinks){
      f.eName = P.e.editStatus.querySelector('span.name');
      f.eLinks = P.e.editStatus.querySelector('span.links');
    }
    if(1===arguments.length){/*assume object*/
      this.finfo = arguments[0];
      file = this.finfo.filename;
      rev = this.finfo.checkin;
    }else if(0===arguments.length){
      if(affirmHasFile()){
        file = this.finfo.filename;
        rev = this.finfo.checkin;
      }
    }else{
      this.finfo = {filename:file,checkin:rev};
    }
    const fi = this.finfo;
    D.clearElement(f.eName, f.eLinks);
    if(!fi){
      D.append(f.eName, '(no file loaded)');
      return this;
    }
    const rHuman = F.hashDigits(rev),
          rUrl = F.hashDigits(rev,true);

    //TODO? port over is-edited marker from /wikiedit
    //var marker = getEditMarker(wi, false);
    D.append(f.eName/*,marker*/,D.a(F.repoUrl('finfo',{name:file, m:rUrl}), file));

    D.append(
      f.eLinks,
      D.append(D.span(), fi.mimetype||'?mimetype?'),
      D.a(F.repoUrl('info/'+rUrl), rHuman),
      D.a(F.repoUrl('timeline',{m:rUrl}), "timeline"),
      D.a(F.repoUrl('annotate',{filename:file, checkin:rUrl}),'annotate'),
      D.a(F.repoUrl('blame',{filename:file, checkin:rUrl}),'blame')
    );
    const purlArgs = F.encodeUrlArgs({
      filename: this.finfo.filename,
      checkin: rUrl
    },false,true);
    const purl = F.repoUrl('fileedit',purlArgs);
    D.append( f.eLinks, D.a(purl,"editor permalink") );
    this.setPageTitle("Edit: "+fi.filename);
    return this;
  };

  /**
     loadFile() loads (file,checkinVersion) and updates the relevant
     UI elements to reflect the loaded state. If passed no arguments
     then it re-uses the values from the currently-loaded file, reloading
     it (emitting an error message if no file is loaded).

     Returns this object, noting that the load is async. After loading
     it triggers a 'fileedit-file-loaded' event, passing it
     this.finfo.

     If a locally-edited copy of the given file/rev is found, that
     copy is used instead of one fetched from the server, but it is
     still treated as a load event.

     Alternate call forms:

     - no arguments: re-loads from this.finfo.

     - 1 argument: assumed to be an finfo-style object. Must have at
     least {filename, checkin} properties, but need not have other
     finfo state.
  */
  P.loadFile = function(file,rev){
    if(0===arguments.length){
      /* Reload from this.finfo */
      if(!affirmHasFile()) return this;
      file = this.finfo.filename;
      rev = this.finfo.checkin;
    }else if(1===arguments.length){
      /* Assume finfo-like object */
      const arg = arguments[0];
      file = arg.filename;
      rev = arg.checkin;
    }
    const self = this;
    const onload = (r,headers)=>{
      delete self.finfo;
      self.updateVersion({
        filename: file,
        checkin: rev,
        branch: headers['x-fileedit-checkin-branch'],
        isExe: ('x'===headers['x-fileedit-file-perm']),
        mimetype: headers['content-type'].split(';').shift()
      });
      self.tabs.switchToTab(self.e.tabs.content);
      self.e.cbIsExe.checked = self.finfo.isExe;
      self.fileContent(r);
      P.previewNeedsUpdate = true;
      self.dispatchEvent('fileedit-file-loaded', self.finfo);
    };
    const semiFinfo = {filename: file, checkin: rev};
    const stashFinfo = this.getStashedFinfo(semiFinfo);
    if(stashFinfo){ // fake a response from the stash...
      this.finfo = stashFinfo;
      this.e.cbIsExe.checked = !!stashFinfo.isExe;
      onload(this.contentFromStash()||'',{
        'x-fileedit-file-perm': stashFinfo.isExe ? 'x' : undefined,
        'content-type': stashFinfo.mimetype,
        'x-fileedit-checkin-branch': stashFinfo.branch
      });
      F.message("Fetched from the local-edit storage:",
                F.hashDigits(stashFinfo.checkin),
                stashFinfo.filename);
      return this;
    }
    F.message(
      "Loading content..."
    ).fetch('fileedit/content',{
      urlParams: {
        filename:file,
        checkin:rev
      },
      responseHeaders: [
        'x-fileedit-file-perm',
        'x-fileedit-checkin-branch',
        'content-type'],
      onload:(r,headers)=>{
        onload(r,headers);
        F.message('Loaded content for',
                  F.hashDigits(self.finfo.checkin),
                  self.finfo.filename);
      }
    });
    return this;
  };

  /**
     Fetches the page preview based on the contents and settings of
     this page's input fields, and updates the UI with with the
     preview.

     Returns this object, noting that the operation is async.
  */
  P.preview = function f(switchToTab){
    if(!affirmHasFile()) return this;
    return this._postPreview(this.fileContent(), function(c){
      P._previewTo(c);
      if(switchToTab) self.tabs.switchToTab(self.e.tabs.preview);
    });
  };

    /**
     Callback for use with F.connectPagePreviewers(). Gets passed
     the preview content.
  */
  P._previewTo = function(c){
    const target = this.e.previewTarget;
    D.clearElement(target);
    if('string'===typeof c) D.parseHtml(target,c);
    if(F.pikchr){
      F.pikchr.addSrcView(target.querySelectorAll('svg.pikchr'));
    }
  };

  /**
     Callback for use with F.connectPagePreviewers()
  */
  P._postPreview = function(content,callback){
    if(!affirmHasFile()) return this;
    if(!content){
      callback(content);
      return this;
    }
    const fd = new FormData();
    fd.append('render_mode',this.e.selectPreviewMode.value);
    fd.append('filename',this.finfo.filename);
    fd.append('ln',E('[name=preview_ln]').checked ? 1 : 0);
    fd.append('iframe_height', E('[name=preview_html_ems]').value);
    fd.append('content',content || '');
    F.message(
      "Fetching preview..."
    ).fetch('ajax/preview-text',{
      payload: fd,
      responseHeaders: 'x-ajax-render-mode',
      onload: (r,header)=>{
        P.selectPreviewMode(P.previewModes[header]);
        if('wiki'===header) P.baseHrefForFile();
        else P.baseHrefRestore();
        callback(r);
        F.message('Updated preview.');
        P.previewNeedsUpdate = false;
        P.dispatchEvent('fileedit-preview-updated',{
          previewMode: P.previewModes.current,
          mimetype: P.finfo.mimetype,
          element: P.e.previewTarget
        });
      },
      onerror: (e)=>{
        F.fetch.onerror(e);
        callback("Error fetching preview: "+e);
      }
    });
    return this;
  };

  /**
     Fetches the content diff based on the contents and settings of
     this page's input fields, and updates the UI with the diff view.

     Returns this object, noting that the operation is async.
  */
  P.diff = function f(sbs){
    if(!affirmHasFile()) return this;
    const content = this.fileContent(),
          self = this,
          target = this.e.diffTarget;
    const fd = new FormData();
    fd.append('filename',this.finfo.filename);
    fd.append('checkin', this.finfo.checkin);
    fd.append('sbs', sbs ? 1 : 0);
    fd.append('content',content);
    if(this.e.selectDiffWS) fd.append('ws',this.e.selectDiffWS.value);
    F.message(
      "Fetching diff..."
    ).fetch('fileedit/diff',{
      payload: fd,
      onload: function(c){
        D.parseHtml(D.clearElement(target),[
          "<div>Diff <code>[",
          self.finfo.checkin,
          "]</code> &rarr; Local Edits</div>",
          c||'No changes.'
        ].join(''));
        F.diff.setupDiffContextLoad();
        if(sbs) P.tweakSbsDiffs();
        F.message('Updated diff.');
        self.tabs.switchToTab(self.e.tabs.diff);
      }
    });
    return this;
  };

  /**
     Performs an async commit based on the form contents and updates
     the UI.

     Returns this object.
  */
  P.commit = function f(){
    if(!affirmHasFile()) return this;
    const self = this;
    const content = this.fileContent(),
          target = D.clearElement(P.e.manifestTarget),
          cbDryRun = E('[name=dry_run]'),
          isDryRun = cbDryRun.checked,
          filename = this.finfo.filename;
    if(!f.onload){
      f.onload = function(c){
        const oldFinfo = JSON.parse(JSON.stringify(self.finfo))
        if(c.manifest){
          D.parseHtml(D.clearElement(target), [
            "<h3>Manifest",
            (c.dryRun?" (dry run)":""),
            ": ", F.hashDigits(c.checkin),"</h3>",
            "<pre><code class='fileedit-manifest'>",
            c.manifest.replace(/</g,'&lt;'),
            /* ^^^ replace() necessary or this breaks if the manifest
               comment contains an unclosed HTML tags,
               e.g. <script> */
            "</code></pre>"
          ].join(''));
          delete c.manifest/*so we don't stash this with finfo*/;
        }
        const msg = [
          'Committed',
          c.dryRun ? '(dry run)' : '',
          '[', F.hashDigits(c.checkin) ,'].'
        ];
        if(!c.dryRun){
          self.unstashContent(oldFinfo);
          self.finfo = c;
          self.e.taComment.value = '';
          self.updateVersion();
          self.fileSelectWidget.loadLeaves();
        }
        self.dispatchEvent('fileedit-committed', c);
        F.message.apply(F, msg);
        self.tabs.switchToTab(self.e.tabs.commit);
      };
    }
    const fd = new FormData();
    fd.append('filename',filename);
    fd.append('checkin', this.finfo.checkin);
    fd.append('content',content);
    fd.append('dry_run',isDryRun ? 1 : 0);
    fd.append('eol', this.e.selectEol.value || 0);
    /* Text fields or select lists... */
    fd.append('comment', this.e.taComment.value);
    if(0){
      // Comment mimetype is currently not supported by the UI...
      ['comment_mimetype'
      ].forEach(function(name){
        var e = E('[name='+name+']');
        if(e) fd.append(name,e.value);
      });
    }
    /* Checkboxes: */
    ['allow_fork',
     'allow_older',
     'exec_bit',
     'allow_merge_conflict',
     'include_manifest',
     'prefer_delta'
    ].forEach(function(name){
      var e = E('[name='+name+']');
      if(e){
        fd.append(name, e.checked ? 1 : 0);
      }else{
        console.error("Missing checkbox? name =",name);
      }
    });
    F.message(
      "Checking in..."
    ).fetch('fileedit/commit',{
      payload: fd,
      responseType: 'json',
      onload: f.onload
    });
    return this;
  };

  /**
     Updates P.finfo for certain state and stashes P.finfo, with the
     current content fetched via P.fileContent().

     If passed truthy AND the stash already has stashed content for
     the current file, only the stashed finfo record is updated, else
     both the finfo and content are updated.
  */
  P.stashContentChange = function(onlyFinfo){
    if(affirmHasFile(true)){
      const fi = this.finfo;
      fi.isExe = this.e.cbIsExe.checked;
      if(!fi.branch) fi.branch = this.fileSelectWidget.checkinBranchName(fi.checkin);
      if(onlyFinfo && $stash.hasStashedContent(fi)){
        $stash.updateFile(fi);
      }else{
        $stash.updateFile(fi, P.fileContent());
      }
      F.message("Stashed change to",F.hashDigits(fi.checkin),fi.filename);
      $stash.prune();
      this.previewNeedsUpdate = true;
    }
    return this;
  };

  /**
     Removes any stashed state for the current P.finfo (if set) from
     F.storage. Returns this.
  */
  P.unstashContent = function(){
    const finfo = arguments[0] || this.finfo;
    if(finfo){
      this.previewNeedsUpdate = true;
      $stash.unstash(finfo);
      //console.debug("Unstashed",finfo);
      F.message("Unstashed",F.hashDigits(finfo.checkin),finfo.filename);
    }
    return this;
  };

  /**
     Clears all stashed file state from F.storage. Returns this.
  */
  P.clearStash = function(){
    $stash.clear();
    return this;
  };

  /**
     If stashed content for P.finfo exists, it is returned, else
     undefined is returned.
  */
  P.contentFromStash = function(){
    return affirmHasFile(true) ? $stash.stashedContent(this.finfo) : undefined;
  };

  /**
     If a stashed version of the given finfo object exists (same
     filename/checkin values), return it, else return undefined.
  */
  P.getStashedFinfo = function(finfo){
    return $stash.getFinfo(finfo);
  };

  P.$stash = $stash /*only for testing/debugging - not part of the API.*/;

})(window.fossil);
Added src/fossil.page.forumpost.js.




























































































































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(function(F/*the fossil object*/){
  "use strict";
  /* JS code for /forumpost and friends. Requires fossil.dom
     and can optionally use fossil.pikchr. */
  const P = F.page, D = F.dom;

  /**
     When the page is loaded, this handler does the following:

     - Installs expand/collapse UI elements on "long" posts and collapses
     them.

     - Any pikchr-generated SVGs get a source-toggle button added to them
     which activates when the mouse is over the image or it is tapped.

     This is a harmless no-op if the current page has neither forum
     post constructs for (1) nor any pikchr images for (2), nor will
     NOT running this code cause any breakage for clients with no JS
     support: this is all "nice-to-have", not required functionality.
  */
  F.onPageLoad(function(){
    const scrollbarIsVisible = (e)=>e.scrollHeight > e.clientHeight;
    /* Returns an event handler which implements the post expand/collapse toggle
       on contentElem when the given widget is activated. */
    const getWidgetHandler = function(widget, contentElem){
      return function(ev){
        if(ev) ev.preventDefault();
        const wasExpanded = widget.classList.contains('expanded');
        widget.classList.toggle('expanded');
        contentElem.classList.toggle('expanded');
        if(wasExpanded){
          contentElem.classList.add('shrunken');
          contentElem.parentElement.scrollIntoView({
            /* This is non-standard, but !(MSIE, Safari) supposedly support it:
               https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView#Browser_compatibility
            */ behavior: 'smooth'
          });
        }else{
          contentElem.classList.remove('shrunken');
        }
        return false;
      };
    };

    /* Adds an Expand/Collapse toggle to all div.forumPostBody
       elements which are deemed "too large" (those for which
       scrolling is currently activated because they are taller than
       their max-height). */
    document.querySelectorAll(
      'div.forumTime, div.forumEdit'
    ).forEach(function f(forumPostWrapper){
      const content = forumPostWrapper.querySelector('div.forumPostBody');
      if(!content || !scrollbarIsVisible(content)) return;
      const parent = content.parentElement,
            widget =  D.addClass(
              D.div(),
              'forum-post-collapser','bottom'
            ),
            rightTapZone = D.addClass(
              D.div(),
              'forum-post-collapser','right'
            );
      /* Repopulates the rightTapZone with arrow indicators. Because
         of the wildly varying height of these elements, This has to
         be done dynamically at init time and upon collapse/expand. Will not
         work until the rightTapZone has been added to the DOM. */
      const refillTapZone = function f(){
        if(!f.baseTapIndicatorHeight){
          /* To figure out how often to place an arrow in the rightTapZone,
             we simply grab the first header element from the page and use
             its hight as our basis for calculation. */
          const h1 = document.querySelector('h1, h2');
          f.baseTapIndicatorHeight = h1.getBoundingClientRect().height;
        }
        D.clearElement(rightTapZone);
        var rtzHeight = parseInt(window.getComputedStyle(rightTapZone).height);
        do {
          D.append(rightTapZone, D.span());
          rtzHeight -= f.baseTapIndicatorHeight * 8;
        }while(rtzHeight>0);
      };
      const handlerStep1 = getWidgetHandler(widget, content);
      const widgetEventHandler = ()=>{ handlerStep1(); refillTapZone(); };
      content.classList.add('with-expander');
      widget.addEventListener('click', widgetEventHandler, false);
      /** Append 3 children, which CSS will evenly space across the
          widget. This improves visibility over having the label
          in only the left, right, or center. */
      var i = 0;
      for( ; i < 3; ++i ) D.append(widget, D.span());
      if(content.nextSibling){
        forumPostWrapper.insertBefore(widget, content.nextSibling);
      }else{
        forumPostWrapper.appendChild(widget);
      }
      content.appendChild(rightTapZone);
      rightTapZone.addEventListener('click', widgetEventHandler, false);
      refillTapZone();
    })/*F.onPageLoad()*/;

    if(F.pikchr){
      F.pikchr.addSrcView();
    }

    /* Attempt to keep stray double-clicks from double-posting. */
    const formSubmitted = function(event){
      const form = event.target;
      if( form.dataset.submitted ){
        event.preventDefault();
        return;
      }
      form.dataset.submitted = '1';
      /** If the user is left waiting "a long time," disable the
          resubmit protection. If we don't do this and they tap the
          browser's cancel button while waiting, they'll be stuck with
          an unsubmittable form. */
      setTimeout(()=>{delete form.dataset.submitted}, 7000);
      return;
    };
    document.querySelectorAll("form").forEach(function(form){
      form.addEventListener('submit',formSubmitted);
    });
  })/*F.onPageLoad callback*/;
})(window.fossil);
Added src/fossil.page.pikchrshow.js.
















































































































































































































































































































































































































































































































































































































































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(function(F/*the fossil object*/){
  "use strict";
  /**
     Client-side implementation of the /pikchrshowcs app. Requires that
     the fossil JS bootstrapping is complete and that these fossil JS
     APIs have been installed: fossil.fetch, fossil.dom,
     fossil.copybutton, fossil.popupwidget, fossil.storage

     Maintenance funkiness note: this file is for the legacy
     /pikchrshowcs app, which was formerly named /pikchrshow.  This
     file and its replacement were not renamed because the replacement
     impl would end up getting this file's name and cause confusion in
     the file history. Whether that confusion would be less than this
     file's name matching the _other_ /pikchrshow impl will cause more
     or less confusion than that remains to be seen.
  */
  const E = (s)=>document.querySelector(s),
        D = F.dom,
        P = F.page;

  P.previewMode = 0 /*0==rendered SVG, 1==pikchr text markdown,
                      2==pikchr text fossil, 3==raw SVG. */
  P.response = {/*stashed state for the server's preview response*/
    isError: false,
    inputText: undefined /* value of the editor field at render-time */,
    raw: undefined /* raw response text/HTML from server */,
    rawSvg: undefined /* plain-text SVG part of responses. Required
                         because the browser will convert \u00a0 to
                         &nbsp; if we extract the SVG from the DOM,
                         resulting in illegal SVG. */
  };

  /**
     If string r contains an SVG element, this returns that section
     of the string, else it returns falsy.
   */
  const getResponseSvg = function(r){
    const i0 = r.indexOf("<svg");
    if(i0>=0){
      const i1 = r.indexOf("</svg");
      return r.substring(i0,i1+6);
    }
    return '';
  };

  F.onPageLoad(function() {
    document.body.classList.add('pikchrshow');
    P.e = { /* various DOM elements we work with... */
      previewTarget: E('#pikchrshow-output'),
      previewLegend: E('#pikchrshow-output-wrapper > legend'),
      previewCopyButton: D.attr(
        D.addClass(D.span(),'copy-button'),
        'id','preview-copy-button' 
      ),
      previewModeLabel: D.label('preview-copy-button'),
      btnSubmit: E('#pikchr-submit-preview'),
      btnStash: E('#pikchr-stash'),
      btnUnstash: E('#pikchr-unstash'),
      btnClearStash: E('#pikchr-clear-stash'),
      cbDarkMode: E('#flipcolors-wrapper > input[type=checkbox]'),
      taContent: E('#content'),
      taPreviewText: D.textarea(20,0,true),
      uiControls: E('#pikchrshow-controls'),
      previewModeToggle: D.button("Preview mode"),
      markupAlignDefault: D.attr(D.radio('markup-align','',true),
                                 'id','markup-align-default'),
      markupAlignCenter: D.attr(D.radio('markup-align','center'),
                                'id','markup-align-center'),
      markupAlignIndent: D.attr(D.radio('markup-align','indent'),
                                'id','markup-align-indent'),
      markupAlignWrapper: D.addClass(D.span(), 'input-with-label')
    };

    ////////////////////////////////////////////////////////////
    // Setup markup alignment selection...
    const alignEvent = function(ev){
      /* Update markdown/fossil wiki preview if it's active */
      if(P.previewMode==1 || P.previewMode==2){
        P.renderPreview();
      }
    };
    P.e.markupAlignRadios = [
      P.e.markupAlignDefault,
      P.e.markupAlignCenter,
      P.e.markupAlignIndent
    ];
    D.append(P.e.markupAlignWrapper,
             D.addClass(D.append(D.span(),"align:"),
                        'v-align-middle'));
    P.e.markupAlignRadios.forEach(
      function(e){
        e.addEventListener('change', alignEvent, false);
        D.append(P.e.markupAlignWrapper,
                 D.addClass([
                   e,
                   D.label(e, e.value || "left")
                 ], 'v-align-middle'));
      }
    );

    ////////////////////////////////////////////////////////////
    // Setup the preview fieldset's LEGEND element...
    D.append( P.e.previewLegend,
              P.e.previewModeToggle,
              '\u00a0',
              P.e.previewCopyButton,
              P.e.previewModeLabel,
              P.e.markupAlignWrapper );

    ////////////////////////////////////////////////////////////
    // Trigger preview on Shift-Enter.
    P.e.taContent.addEventListener('keydown',function(ev){
      if(ev.shiftKey && 13 === ev.keyCode){
        ev.preventDefault();
        ev.stopPropagation();
        P.preview();
        return false;
      }
    }, false);

    ////////////////////////////////////////////////////////////
    // Setup clipboard-copy of markup/SVG...
    F.copyButton(P.e.previewCopyButton, {copyFromElement: P.e.taPreviewText});
    P.e.previewModeLabel.addEventListener('click', ()=>P.e.previewCopyButton.click(), false);

    ////////////////////////////////////////////////////////////
    // Set up dark mode simulator...
    P.e.cbDarkMode.addEventListener('change', function(ev){
      if(ev.target.checked) D.addClass(P.e.previewTarget, 'dark-mode');
      else D.removeClass(P.e.previewTarget, 'dark-mode');
    }, false);
    if(P.e.cbDarkMode.checked) D.addClass(P.e.previewTarget, 'dark-mode');

    ////////////////////////////////////////////////////////////
    // Set up preview update and preview mode toggle...
    P.e.btnSubmit.addEventListener('click', ()=>P.preview(), false);
    P.e.previewModeToggle.addEventListener('click', function(){
      /* Rotate through the 4 available preview modes */
      P.previewMode = ++P.previewMode % 4;
      P.renderPreview();
    }, false);

    ////////////////////////////////////////////////////////////
    // Set up selection list of predefined scripts...
    if(true){
      const selectScript = P.e.selectScript = D.select(),
            cbAutoPreview = P.e.cbAutoPreview =
            D.attr(D.checkbox(true),'id', 'cb-auto-preview'),
            cbWrap = D.addClass(D.div(),'input-with-label')
      ;
      D.append(
        cbWrap,
        selectScript,
        cbAutoPreview,
        D.label(cbAutoPreview,"Auto-preview?"),
        F.helpButtonlets.create(
          D.append(D.div(),
                   'Auto-preview automatically previews selected ',
                   'built-in pikchr scripts by sending them to ',
                   'the server for rendering. Not recommended on a ',
                   'slow connection/server.',
                   D.br(),D.br(),
                   'Pikchr scripts may also be dragged/dropped from ',
                   'the local filesystem into the text area, if the ',
                   'environment supports it, but the auto-preview ',
                   'option does not apply to them.'
                  )
        )
      )/*.childNodes.forEach(function(ch){
        ch.style.margin = "0 0.25em";
      })*/;
      D.append(P.e.uiControls, cbWrap);
      P.predefinedPiks.forEach(function(script,ndx){
        const opt = D.option(script.code ? script.code.trim() :'', script.name);
        D.append(selectScript, opt);
        opt.$_sampleScript = script /* for response caching purposes */;
        if(!ndx) selectScript.selectedIndex = 0 /*timing/ordering workaround*/;
        if(!script.code) D.disable(opt);
      });
      delete P.predefinedPiks;
      selectScript.addEventListener('change', function(ev){
        const val = ev.target.value;
        if(!val) return;
        const opt = ev.target.selectedOptions[0];
        P.e.taContent.value = val;
        if(cbAutoPreview.checked){
          P.preview.$_sampleScript = opt.$_sampleScript;
          P.preview();
        }
      }, false);
    }
    
    ////////////////////////////////////////////////////////////
    // Move dark mode checkbox to the end and add a help buttonlet
    D.append(
      P.e.uiControls,
      D.append(
        P.e.cbDarkMode.parentNode/*the .input-with-label element*/,
        F.helpButtonlets.create(
          D.div(),
          'Dark mode changes the colors of rendered SVG to ',
          'make them more visible in dark-themed skins. ',
          'This only changes (using CSS) how they are rendered, ',
          'not any actual colors written in the script.',
          D.br(), D.br(),
          'In some color combinations, certain browsers might ',
          'cause the SVG image to blur considerably with this ',
          'setting enabled!'
        )
      )
    );

    ////////////////////////////////////////////////////////////
    // File drag/drop pikchr scripts into P.e.taContent.
    // Adapted from: https://stackoverflow.com/a/58677161
    const dropHighlight = P.e.taContent;
    const dropEvents = {
      drop: function(ev){
        //ev.stopPropagation();
        ev.preventDefault();
        D.removeClass(dropHighlight, 'dragover');
        const file = ev.dataTransfer.files[0];
        if(file) {
          const reader = new FileReader();
          reader.addEventListener(
            'load', function(e) {P.e.taContent.value = e.target.result}, false
          );
          reader.readAsText(file, "UTF-8");
        }
      },
      dragenter: function(ev){
        //ev.stopPropagation();
        ev.preventDefault();
        ev.dataTransfer.dropEffect = "copy";
        D.addClass(dropHighlight, 'dragover');
        //console.debug("dragenter");
      },
      dragover: function(ev){
        //ev.stopPropagation();
        ev.preventDefault();
        //console.debug("dragover");
      },
      dragend: function(ev){
        //ev.stopPropagation();
        ev.preventDefault();
        //console.debug("dragend");
      },
      dragleave: function(ev){
        //ev.stopPropagation();
        ev.preventDefault();
        D.removeClass(dropHighlight, 'dragover');
        //console.debug("dragleave");
      }
    };
    /*
      The idea here is to accept drops at multiple points or, ideally,
      document.body, and apply them to P.e.taContent, but the precise
      combination of event handling needed to pull this off is eluding
      me.
    */
    [P.e.taContent
     //P.e.previewTarget,// works only until we drag over the SVG element!
     //document.body
     /* ideally we'd link only to document.body, but the events seem to
        get out of whack, with dropleave being triggered
        at unexpected points. */
    ].forEach(function(e){
        Object.keys(dropEvents).forEach(
          (k)=>e.addEventListener(k, dropEvents[k], true)
        );
    });

    ////////////////////////////////////////////////////////////
    // Setup stash/unstash
    const stashKey = 'pikchrshow-stash';
    P.e.btnStash.addEventListener('click', function(){
      const val = P.e.taContent.value;
      if(val){
        F.storage.set(stashKey, val);
        D.enable(P.e.btnUnstash);
        F.toast.message("Stashed pikchr.");
      }
    }, false);
    P.e.btnUnstash.addEventListener('click', function(){
      const val = F.storage.get(stashKey);
      P.e.taContent.value = val || '';
    }, false);
    P.e.btnClearStash.addEventListener('click', function(){
      F.storage.remove(stashKey);
      D.disable(P.e.btnUnstash);
      F.toast.message("Cleared pikchr stash.");
    }, false);
    F.helpButtonlets.create(P.e.btnClearStash.nextElementSibling);
    // If we have stashed contents, enable Unstash, else disable it:
    if(F.storage.contains(stashKey)) D.enable(P.e.btnUnstash);
    else D.disable(P.e.btnUnstash);

    ////////////////////////////////////////////////////////////
    // If we start with content, get it in sync with the state
    // generated by P.preview(). Normally the server pre-populates it
    // with an example.
    let needsPreview;
    if(!P.e.taContent.value){
      P.e.taContent.value = F.storage.get(stashKey,'');
      needsPreview = true;
    }
    if(P.e.taContent.value){
      /* Fill our "response" state so that renderPreview() can work */
      P.response.inputText = P.e.taContent.value;
      P.response.raw = P.e.previewTarget.innerHTML;
      P.response.rawSvg = getResponseSvg(
        P.response.raw /*note that this is already in the DOM,
                         which means that the browser has already mangled
                         \u00a0 to &nbsp;, so...*/.split('&nbsp;').join('\u00a0'));
      if(needsPreview) P.preview();
      else{
        /*If it's from the server, it's already rendered, but this
          gets all labels/headers in sync.*/
        P.renderPreview();
      }
    }
  }/*F.onPageLoad()*/);

  /**
     Updates the preview view based on the current preview mode and
     error state.
  */
  P.renderPreview = function f(){
    if(!f.hasOwnProperty('rxNonce')){
      f.rxNonce = /<!--.+-->\r?\n?/g /*pikchr nonce comments*/;
      f.showMarkupAlignment = function(showIt){
        P.e.markupAlignWrapper.classList[showIt ? 'remove' : 'add']('hidden');
      };
      f.getMarkupAlignmentClass = function(){
        if(P.e.markupAlignCenter.checked) return ' center';
        else if(P.e.markupAlignIndent.checked) return ' indent';
        return '';
      };
      f.getSvgNode = function(txt){
        const childs = D.parseHtml(txt);
        const wrapper = childs.filter((e)=>'DIV'===e.tagName)[0];
        return wrapper ? wrapper.querySelector('svg.pikchr') : undefined;
      };
    }
    const preTgt = this.e.previewTarget;
    if(this.response.isError){
      D.append(D.clearElement(preTgt), D.parseHtml(P.response.raw));
      D.addClass(preTgt, 'error');
      this.e.previewModeLabel.innerText = "Error";
      return;
    }
    D.removeClass(preTgt, 'error');
    D.removeClass(this.e.previewCopyButton, 'disabled');
    D.removeClass(this.e.markupAlignWrapper, 'hidden');
    D.enable(this.e.previewModeToggle, this.e.markupAlignRadios);
    let label, svg;
    switch(this.previewMode){
    case 0:
      label = "SVG";
      f.showMarkupAlignment(false);
      D.parseHtml(D.clearElement(preTgt), P.response.raw);
      svg = preTgt.querySelector('svg.pikchr');
      if(svg && P.response.rawSvg){ /*for copy button*/
        this.e.taPreviewText.value = P.response.rawSvg;
        F.pikchr.addSrcView(svg);
      }
      break;
    case 1:
      label = "Markdown";
      f.showMarkupAlignment(true);
      this.e.taPreviewText.value = [
        '```pikchr'+f.getMarkupAlignmentClass(),
        this.response.inputText.trim(), '```'
      ].join('\n');
      D.append(D.clearElement(preTgt), this.e.taPreviewText);
      break;
    case 2:
      label = "Fossil wiki";
      f.showMarkupAlignment(true);
      this.e.taPreviewText.value = [
        '<verbatim type="pikchr',
        f.getMarkupAlignmentClass(),
        '">', this.response.inputText.trim(), '</verbatim>'
      ].join('');
      D.append(D.clearElement(preTgt), this.e.taPreviewText);
      break;
    case 3:
      label = "Raw SVG";
      f.showMarkupAlignment(false);
      svg = f.getSvgNode(this.response.raw);
      if(svg){
        this.e.taPreviewText.value =
          P.response.rawSvg || "Error extracting SVG element.";
      }else{
        this.e.taPreviewText.value = "ERROR parsing response HTML:\n"+
          this.response.raw;
        console.error("svg parsed HTML nodes:",childs);
      }
      D.append(D.clearElement(preTgt), this.e.taPreviewText);
      break;
    }
    this.e.previewModeLabel.innerText = label;
    this.e.taContent.focus(/*not sure why this gets lost on preview!*/);
  };

  /**
     Fetches the preview from the server and updates the preview to
     the rendered SVG content or error report.
  */
  P.preview = function fp(){
    if(!fp.hasOwnProperty('toDisable')){
      fp.toDisable = [
        /* input elements to disable during ajax operations */
        this.e.btnSubmit, this.e.taContent,
        this.e.cbAutoPreview, this.e.selectScript,
        this.e.btnStash, this.e.btnClearStash
        /* handled separately: previewModeToggle, previewCopyButton,
           markupAlignRadios */
      ];
      fp.target = this.e.previewTarget;
      fp.updateView = function(c,isError){
        P.previewMode = 0;
        P.response.raw = c;
        P.response.rawSvg = getResponseSvg(c);
        P.response.isError = isError;
        D.enable(fp.toDisable);
        P.renderPreview();
      };
    }
    D.disable(fp.toDisable, this.e.previewModeToggle, this.e.markupAlignRadios);
    D.addClass(this.e.markupAlignWrapper, 'hidden');
    D.addClass(this.e.previewCopyButton, 'disabled');
    const content = this.e.taContent.value.trim();
    this.response.raw = this.response.rawSvg = undefined;
    this.response.inputText = content;
    const sampleScript = fp.$_sampleScript;
    delete fp.$_sampleScript;
    if(sampleScript && sampleScript.cached){
      fp.updateView(sampleScript.cached, false);
      return this;
    }
    if(!content){
      fp.updateView("No pikchr content!",true);
      return this;
    }
    const self = this;
    const fd = new FormData();
    fd.append('ajax', true);
    fd.append('content',content);
    F.fetch('pikchrshow',{
      payload: fd,
      responseHeaders: 'x-pikchrshow-is-error',
      onload: (r,isErrHeader)=>{
        const isErr = +isErrHeader ? true : false;
        if(!isErr && sampleScript){
          sampleScript.cached = r;
        }
        fp.updateView(r,isErr);
      },
      onerror: (e)=>{
        F.fetch.onerror(e);
        fp.updateView("Error fetching preview: "+e, true);
      }
    });
    return this;
  }/*preview()*/;

  /**
     Predefined scripts. Each entry is an object:

     {
     name: required string,

     code: optional code string. An entry with no code
           is treated like a separator in the resulting
           SELECT element (a disabled OPTION).

     }
  */
  P.predefinedPiks = [
    {name: "-- Example Scripts --"},
/*
  The following were imported from the pikchr test scripts:

  https://fossil-scm.org/pikchr/dir/examples
*/
{name:"Cardinal headings",code:`   linerad = 5px
C: circle "Center" rad 150%
   circle "N"  at 1.0 n  of C; arrow from C to last chop ->
   circle "NE" at 1.0 ne of C; arrow from C to last chop <-
   circle "E"  at 1.0 e  of C; arrow from C to last chop <->
   circle "SE" at 1.0 se of C; arrow from C to last chop ->
   circle "S"  at 1.0 s  of C; arrow from C to last chop <-
   circle "SW" at 1.0 sw of C; arrow from C to last chop <->
   circle "W"  at 1.0 w  of C; arrow from C to last chop ->
   circle "NW" at 1.0 nw of C; arrow from C to last chop <-
   arrow from 2nd circle to 3rd circle chop
   arrow from 4th circle to 3rd circle chop
   arrow from SW to S chop <->
   circle "ESE" at 2.0 heading 112.5 from Center \
      thickness 150% fill lightblue radius 75%
   arrow from Center to ESE thickness 150% <-> chop
   arrow from ESE up 1.35 then to NE chop
   line dashed <- from E.e to (ESE.x,E.y)
   line dotted <-> thickness 50% from N to NW chop
`},{name:"Core object types",code:`AllObjects: [

# First row of objects
box "box"
box rad 10px "box (with" "rounded" "corners)" at 1in right of previous
circle "circle" at 1in right of previous
ellipse "ellipse" at 1in right of previous

# second row of objects
OVAL1: oval "oval" at 1in below first box
oval "(tall &" "thin)" "oval" width OVAL1.height height OVAL1.width \
    at 1in right of previous
cylinder "cylinder" at 1in right of previous
file "file" at 1in right of previous

# third row shows line-type objects
dot "dot" above at 1in below first oval
line right from 1.8cm right of previous "lines" above
arrow right from 1.8cm right of previous "arrows" above
spline from 1.8cm right of previous \
   go right .15 then .3 heading 30 then .5 heading 160 then .4 heading 20 \
   then right .15
"splines" at 3rd vertex of previous

# The third vertex of the spline is not actually on the drawn
# curve.  The third vertex is a control point.  To see its actual
# position, uncomment the following line:
#dot color red at 3rd vertex of previous spline

# Draw various lines below the first line
line dashed right from 0.3cm below start of previous line
line dotted right from 0.3cm below start of previous
line thin   right from 0.3cm below start of previous
line thick  right from 0.3cm below start of previous


# Draw arrows with different arrowhead configurations below
# the first arrow
arrow <-  right from 0.4cm below start of previous arrow
arrow <-> right from 0.4cm below start of previous

# Draw splines with different arrowhead configurations below
# the first spline
spline same from .4cm below start of first spline ->
spline same from .4cm below start of previous <-
spline same from .4cm below start of previous <->

] # end of AllObjects

# Label the whole diagram
text "Examples Of Pikchr Objects" big bold  at .8cm above north of AllObjects
`},{name:"Swimlanes",code:`    $laneh = 0.75

    # Draw the lanes
    down
    box width 3.5in height $laneh fill 0xacc9e3
    box same fill 0xc5d8ef
    box same as first box
    box same as 2nd box
    line from 1st box.sw+(0.2,0) up until even with 1st box.n \
      "Alan" above aligned
    line from 2nd box.sw+(0.2,0) up until even with 2nd box.n \
      "Betty" above aligned
    line from 3rd box.sw+(0.2,0) up until even with 3rd box.n \
      "Charlie" above aligned
    line from 4th box.sw+(0.2,0) up until even with 4th box.n \
       "Darlene" above aligned

    # fill in content for the Alice lane
    right
A1: circle rad 0.1in at end of first line + (0.2,-0.2) \
       fill white thickness 1.5px "1" 
    arrow right 50%
    circle same "2"
    arrow right until even with first box.e - (0.65,0.0)
    ellipse "future" fit fill white height 0.2 width 0.5 thickness 1.5px
A3: circle same at A1+(0.8,-0.3) "3" fill 0xc0c0c0
    arrow from A1 to last circle chop "fork!" below aligned

    # content for the Betty lane
B1: circle same as A1 at A1-(0,$laneh) "1"
    arrow right 50%
    circle same "2"
    arrow right until even with first ellipse.w
    ellipse same "future"
B3: circle same at A3-(0,$laneh) "3"
    arrow right 50%
    circle same as A3 "4"
    arrow from B1 to 2nd last circle chop

    # content for the Charlie lane
C1: circle same as A1 at B1-(0,$laneh) "1"
    arrow 50%
    circle same "2"
    arrow right 0.8in "goes" "offline"
C5: circle same as A3 "5"
    arrow right until even with first ellipse.w \
      "back online" above "pushes 5" below "pulls 3 & 4" below
    ellipse same "future"

    # content for the Darlene lane
D1: circle same as A1 at C1-(0,$laneh) "1"
    arrow 50%
    circle same "2"
    arrow right until even with C5.w
    circle same "5"
    arrow 50%
    circle same as A3 "6"
    arrow right until even with first ellipse.w
    ellipse same "future"
D3: circle same as B3 at B3-(0,2*$laneh) "3"
    arrow 50%
    circle same "4"
    arrow from D1 to D3 chop
`}

  ];
  
})(window.fossil);
Added src/fossil.page.pikchrshowasm.js.
































































































































































































































































































































































































































































































































































































































































































































































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/*
  2022-05-20

  The author disclaims copyright to this source code.  In place of a
  legal notice, here is a blessing:

  *   May you do good and not evil.
  *   May you find forgiveness for yourself and forgive others.
  *   May you share freely, never taking more than you give.

  ***********************************************************************

  This is the main entry point for the WASM rendition of fossil's
  /pikchrshow app. It sets up the various UI bits, loads a Worker for
  the pikchr process, and manages the communication between the UI and
  worker.

  API dependencies: fossil.dom, fossil.copybutton, fossil.storage
*/
(function(F/*fossil object*/){
  'use strict';

  /* Recall that the 'self' symbol, except where locally
     overwritten, refers to the global window or worker object. */

  const D = F.dom;
  /** Name of the stored copy of this app's config. */
  const configStorageKey = 'pikchrshow-config';

  /* querySelectorAll() proxy */
  const EAll = function(/*[element=document,] cssSelector*/){
    return (arguments.length>1 ? arguments[0] : document)
      .querySelectorAll(arguments[arguments.length-1]);
  };
  /* querySelector() proxy */
  const E = function(/*[element=document,] cssSelector*/){
    return (arguments.length>1 ? arguments[0] : document)
      .querySelector(arguments[arguments.length-1]);
  };

  /** The main application object. */
  const PS = {
    /* Config options. */
    config: {
      /* If true, display input/output areas side-by-side, else stack
         them vertically. */
      sideBySide: true,
      /* If true, swap positions of the input/output areas. */
      swapInOut: false,
      /* If true, the SVG is allowed to resize to fit the parent
         content area, else the parent is resized to fit the rendered
         SVG (as sized by pikchr). */
      renderAutofit: false,
      /* If true, automatically render while the user is typing. */
      renderWhileTyping: false
    },
    /* Various DOM elements. */
    e: {
      previewCopyButton: E('#preview-copy-button'),
      previewModeLabel: E('label[for=preview-copy-button]'),
      zoneInputButtons: E('.zone-wrapper.input > legend > .button-bar'),
      zoneOutputButtons: E('.zone-wrapper.output > legend > .button-bar'),
      outText: E('#pikchr-output-text'),
      pikOutWrapper: E('#pikchr-output-wrapper'),
      pikOut: E('#pikchr-output'),
      btnRender: E('#btn-render')
    },
    renderModes: ['svg'/*SVG must be at index 0*/,'markdown', 'wiki', 'text'],
    renderModeLabels: {
      svg: 'SVG', markdown: 'Markdown', wiki: 'Fossil Wiki', text: 'Text'
    },
    _msgMap: {},
    /** Adds a worker message handler for messages of the given
        type. */
    addMsgHandler: function f(type,callback){
      if(Array.isArray(type)){
        type.forEach((t)=>this.addMsgHandler(t, callback));
        return this;
      }
      (this._msgMap.hasOwnProperty(type)
       ? this._msgMap[type]
       : (this._msgMap[type] = [])).push(callback);
      return this;
    },
    /** Given a worker message, runs all handlers for msg.type. */
    runMsgHandlers: function(msg){
      const list = (this._msgMap.hasOwnProperty(msg.type)
                    ? this._msgMap[msg.type] : false);
      if(!list){
        console.warn("No handlers found for message type:",msg);
        return false;
      }
      list.forEach((f)=>f(msg));
      return true;
    },
    /** Removes all message handlers for the given message type. */
    clearMsgHandlers: function(type){
      delete this._msgMap[type];
      return this;
    },
    /* Posts a message in the form {type, data} to the db worker. Returns this. */
    wMsg: function(type,data){
      this.worker.postMessage({type, data});
      return this;
    },
    /** Stores this object's config in the browser's storage. */
    storeConfig: function(){
      F.storage.setJSON(configStorageKey,this.config);
    }
  };
  PS.renderModes.selectedIndex = 0;
  PS._config = F.storage.getJSON(configStorageKey);
  if(PS._config){
    /* Copy all properties to PS.config which are currently in
       PS._config. We don't bother copying any other properties: those
       would be stale/removed config entries. */
    Object.keys(PS.config).forEach(function(k){
      if(PS._config.hasOwnProperty(k)){
        PS.config[k] = PS._config[k];
      }
    });
    delete PS._config;
  }

  PS.worker = new Worker('builtin/extsrc/pikchr-worker.js');
  PS.worker.onmessage = (ev)=>PS.runMsgHandlers(ev.data);
  PS.addMsgHandler('stdout', console.log.bind(console));
  PS.addMsgHandler('stderr', console.error.bind(console));

  /** Handles status updates from the Module object. */
  PS.addMsgHandler('module', function f(ev){
    ev = ev.data;
    if('status'!==ev.type){
      console.warn("Unexpected module-type message:",ev);
      return;
    }
    if(!f.ui){
      f.ui = {
        status: E('#module-status'),
        progress: E('#module-progress'),
        spinner: E('#module-spinner')
      };
    }
    const msg = ev.data;
    if(f.ui.progres){
      progress.value = msg.step;
      progress.max = msg.step + 1/*we don't know how many steps to expect*/;
    }
    if(1==msg.step){
      f.ui.progress.classList.remove('hidden');
      f.ui.spinner.classList.remove('hidden');
    }
    if(msg.text){
      f.ui.status.classList.remove('hidden');
      f.ui.status.innerText = msg.text;
    }else{
      if(f.ui.progress){
        f.ui.progress.remove();
        f.ui.spinner.remove();
        delete f.ui.progress;
        delete f.ui.spinner;
      }
      f.ui.status.classList.add('hidden');
      /* The module can post messages about fatal problems,
         e.g. an exit() being triggered or assertion failure,
         after the last "load" message has arrived, so
         leave f.ui.status and message listener intact. */
    }
  });

  PS.e.previewModeLabel.innerText =
    PS.renderModeLabels[PS.renderModes[PS.renderModes.selectedIndex]];

  /**
     The 'pikchr-ready' event is fired (with no payload) when the
     wasm module has finished loading. */
  PS.addMsgHandler('pikchr-ready', function(){
    PS.clearMsgHandlers('pikchr-ready');
    F.page.onPikchrshowLoaded();
  });

  /**
     Performs all app initialization which must wait until after the
     worker module is loaded. This function removes itself when it's
     called.
  */
  F.page.onPikchrshowLoaded = function(){
    delete this.onPikchrshowLoaded;
    // Unhide all elements which start out hidden
    EAll('.initially-hidden').forEach((e)=>e.classList.remove('initially-hidden'));
    const taInput = E('#input');
    const btnClearIn = E('#btn-clear');
    btnClearIn.addEventListener('click',function(){
      taInput.value = '';
    },false);
    const getCurrentText = function(){
      let text;
      if(taInput.selectionStart<taInput.selectionEnd){
        text = taInput.value.substring(taInput.selectionStart,taInput.selectionEnd).trim();
      }else{
        text = taInput.value.trim();
      }
      return text;;
    };
    const renderCurrentText = function(){
      const text = getCurrentText();
      if(text) PS.render(text);
    };
    const setCurrentText = function(txt){
      taInput.value = txt;
      renderCurrentText();
    };
    PS.e.btnRender.addEventListener('click',function(ev){
      ev.preventDefault();
      renderCurrentText();
    },false);

    /** To be called immediately before work is sent to the
        worker. Updates some UI elements. The 'working'/'end'
        event will apply the inverse, undoing the bits this
        function does. This impl is not in the 'working'/'start'
        event handler because that event is given to us
        asynchronously _after_ we need to have performed this
        work.
    */
    const preStartWork = function f(){
      if(!f._){
        const title = E('title');
        f._ = {
          pageTitle: title,
          pageTitleOrig: title.innerText
        };
      }
      //f._.pageTitle.innerText = "[working...] "+f._.pageTitleOrig;
      PS.e.btnRender.setAttribute('disabled','disabled');
    };

    /**
       Submits the current input text to pikchr and renders the
       result. */
    PS.render = function f(txt){
      preStartWork();
      this.wMsg('pikchr',{
        pikchr: txt,
        darkMode: !!window.fossil.config.skin.isDark
      });
    };

    /**
       Event handler for 'pikchr' messages from the Worker thread.
    */
    PS.addMsgHandler('pikchr', function(ev){
      const m = ev.data, pikOut = this.e.pikOut;
      pikOut.classList[m.isError ? 'add' : 'remove']('error');
      pikOut.dataset.pikchr = m.pikchr;
      const mode = this.renderModes[this.renderModes.selectedIndex];
      switch(mode){
          case 'text': case 'markdown': case 'wiki': {
            let body;
            switch(mode){
                case 'markdown':
                  body = ['```pikchr', m.pikchr, '```'].join('\n');
                  break;
                case 'wiki':
                  body = ['<verbatim type="pikchr">', m.pikchr, '</verbatim>'].join('');
                  break;
                default:
                  body = m.result;
            }
            this.e.outText.value = body;
            this.e.outText.classList.remove('hidden');
            pikOut.classList.add('hidden');
            this.e.pikOutWrapper.classList.add('text');
            break;
          }
          case 'svg':
            this.e.outText.classList.add('hidden');
            pikOut.classList.remove('hidden');
            this.e.pikOutWrapper.classList.remove('text');
            pikOut.innerHTML = m.result;
            this.e.outText.value = m.result/*for clipboard copy*/;
            break;
          default: throw new Error("Unhandled render mode: "+mode);
      }
      let vw = null, vh = null;
      if('svg'===mode){
        if(m.isError){
          vw = vh = '100%';
        }else if(this.config.renderAutofit){
          /* FIXME: current behavior doesn't work as desired when width>height
             (e.g. non-side-by-side mode).*/
          vw = vh = '98%';
        }else{
          vw = m.width+1+'px'; vh = m.height+1+'px';
          /* +1 is b/c the SVG uses floating point sizes but pikchr()
             returns truncated integers. */
        }
        pikOut.style.width = vw;
        pikOut.style.height = vh;
      }
    }.bind(PS))/*'pikchr' msg handler*/;

    E('#btn-render-mode').addEventListener('click',function(){
      const modes = this.renderModes;
      modes.selectedIndex = (modes.selectedIndex + 1) % modes.length;
      this.e.previewModeLabel.innerText = this.renderModeLabels[modes[modes.selectedIndex]];
      if(this.e.pikOut.dataset.pikchr){
        this.render(this.e.pikOut.dataset.pikchr);
      }
    }.bind(PS));
    F.copyButton(PS.e.previewCopyButton, {copyFromElement: PS.e.outText});
    PS.e.previewModeLabel.addEventListener('click', ()=>PS.e.previewCopyButton.click(), false);

    PS.addMsgHandler('working',function f(ev){
      switch(ev.data){
          case 'start': /* See notes in preStartWork(). */; return;
          case 'end':
            //preStartWork._.pageTitle.innerText = preStartWork._.pageTitleOrig;
            this.e.btnRender.removeAttribute('disabled');
            this.e.pikOutWrapper.classList[this.config.renderAutofit ? 'add' : 'remove']('autofit');
            return;
      }
      console.warn("Unhandled 'working' event:",ev.data);
    }.bind(PS));

    /* For each checkbox with data-csstgt, set up a handler which
       toggles the given CSS class on the element matching
       E(data-csstgt). */
    EAll('input[type=checkbox][data-csstgt]')
      .forEach(function(e){
        const tgt = E(e.dataset.csstgt);
        const cssClass = e.dataset.cssclass || 'error';
        e.checked = tgt.classList.contains(cssClass);
        e.addEventListener('change', function(){
          tgt.classList[
            this.checked ? 'add' : 'remove'
          ](cssClass)
        }, false);
      });
    /* For each checkbox with data-config=X, set up a binding to
       PS.config[X]. These must be set up AFTER data-csstgt
       checkboxes so that those two states can be synced properly. */
    EAll('input[type=checkbox][data-config]')
      .forEach(function(e){
        const confVal = !!PS.config[e.dataset.config];
        if(e.checked !== confVal){
          /* Ensure that data-csstgt mappings (if any) get
             synced properly. */
          e.checked = confVal;
          e.dispatchEvent(new Event('change'));
        }
        e.addEventListener('change', function(){
          PS.config[this.dataset.config] = this.checked;
          PS.storeConfig();
        }, false);
      });
    E('#opt-cb-autofit').addEventListener('change',function(){
      /* PS.config.renderAutofit was set by the data-config
         event handler. */
      if(0==PS.renderModes.selectedIndex && PS.e.pikOut.dataset.pikchr){
        PS.render(PS.e.pikOut.dataset.pikchr);
      }
    });
    /* For each button with data-cmd=X, map a click handler which
       calls PS.render(X). */
    const cmdClick = function(){PS.render(this.dataset.cmd);};
    EAll('button[data-cmd]').forEach(
      e => e.addEventListener('click', cmdClick, false)
    );


    ////////////////////////////////////////////////////////////
    // Set up selection list of predefined scripts...
    if(true){
      const selectScript = PS.e.selectScript = D.select();
      D.append(PS.e.zoneInputButtons, selectScript);
      PS.predefinedPiks.forEach(function(script,ndx){
        const opt = D.option(script.code ? script.code.trim() :'', script.name);
        D.append(selectScript, opt);
        if(!ndx) selectScript.selectedIndex = 0 /*timing/ordering workaround*/;
        if(ndx && !script.code){
          /* Treat entries w/ no code as separators EXCEPT for the
             first one, which we want to keep selectable solely for
             cosmetic reasons. */
          D.disable(opt);
        }
      });
      delete PS.predefinedPiks;
      selectScript.addEventListener('change', function(ev){
        const val = ev.target.value;
        if(!val) return;
        setCurrentText(val);
      }, false);
    }/*Examples*/

    /**
       TODO? Handle load/import of an external pikchr file.
    */
    if(0) E('#load-pikchr').addEventListener('change',function(){
      const f = this.files[0];
      const r = new FileReader();
      const status = {loaded: 0, total: 0};
      this.setAttribute('disabled','disabled');
      const that = this;
      r.addEventListener('load', function(){
        that.removeAttribute('disabled');
        stdout("Loaded",f.name+". Opening pikchr...");
        PS.wMsg('open',{
          filename: f.name,
          buffer: this.result
        });
      });
      r.addEventListener('error',function(){
        that.removeAttribute('disabled');
        stderr("Loading",f.name,"failed for unknown reasons.");
      });
      r.addEventListener('abort',function(){
        that.removeAttribute('disabled');
        stdout("Cancelled loading of",f.name+".");
      });
      r.readAsArrayBuffer(f);
    });

    EAll('fieldset.collapsible').forEach(function(fs){
      const btnToggle = E(fs,'legend > .fieldset-toggle'),
            content = EAll(fs,':scope > div');
      btnToggle.addEventListener('click', function(){
        fs.classList.toggle('collapsed');
        content.forEach((d)=>d.classList.toggle('hidden'));
      }, false);
    });

    if(window.sessionStorage){
      /* If sessionStorage['pikchr-xfer'] exists and the "fromSession"
         URL argument was passed to this page, load the pikchr source
         from the session. This is used by the "open in pikchrshow"
         link in the forum. */
      const src = window.sessionStorage.getItem('pikchr-xfer');
      if( src && (new URL(self.location.href).searchParams).has('fromSession') ){
        taInput.value =  src;
        window.sessionStorage.removeItem('pikchr-xfer');
      }
    }

    PS.e.btnRender.click();

    /** Debounce handler for auto-rendering while typing. */
    const debounceAutoRender = F.debounce(function f(){
      if(!PS._isDirty) return;
      const text = getCurrentText();
      if(f._ === text){
        PS._isDirty = false;
        return;
      }
      f._ = text;
      PS._isDirty = false;
      PS.render(text || '');
    }, 800, false);

    taInput.addEventListener('keydown',function f(ev){
      if((ev.ctrlKey || ev.shiftKey) && 13 === ev.keyCode){
        // Ctrl-enter and shift-enter both run the current input
        PS._isDirty = false/*prevent a pending debounce from re-rendering*/;
        ev.preventDefault();
        ev.stopPropagation();
        renderCurrentText();
        return;
      }
      if(!PS.config.renderWhileTyping) return;
      /* Auto-render while typing... */
      switch(ev.keyCode){
          case (ev.keyCode<32): /*any ctrl char*/
            /* ^^^ w/o that, simply tapping ctrl is enough to
               force a re-render. Similarly, TAB-ing focus away
               should not re-render. */
          case 33: case 34: /* page up/down */
          case 35: case 36: /* home/end */
          case 37: case 38: case 39: case 40: /* arrows */
            return;
      }
      PS._isDirty = true;
      debounceAutoRender();
    }, false);

    const ForceResizeKludge = (function(){
      /* Workaround for Safari mayhem regarding use of vh CSS
         units....  We cannot use vh units to set the main view
         size because Safari chokes on that, so we calculate
         that height here. Larger than ~95% is too big for
         Firefox on Android, causing the input area to move
         off-screen. */
      const appViews = EAll('.app-view');
      const elemsToCount = [
        /* Elements which we need to always count in the
           visible body size. */
        E('body > header'),
        E('body > nav.mainmenu'),
        E('body > footer')
      ];
      const resized = function f(){
        if(f.$disabled) return;
        const wh = window.innerHeight;
        var ht;
        var extra = 0;
        elemsToCount.forEach((e)=>e ? extra += F.dom.effectiveHeight(e) : false);
        ht = wh - extra;
        appViews.forEach(function(e){
          e.style.height =
            e.style.maxHeight = [
              "calc(", (ht>=100 ? ht : 100), "px",
              " - 2em"/*fudge value*/,")"
              /* ^^^^ hypothetically not needed, but both
                 Chrome/FF on Linux will force scrollbars on the
                 body if this value is too small. */
            ].join('');
        });
      };
      resized.$disabled = true/*gets deleted when setup is finished*/;
      window.addEventListener('resize', F.debounce(resized, 250), false);
      return resized;
    })()/*ForceResizeKludge*/;

    delete ForceResizeKludge.$disabled;
    ForceResizeKludge();
  }/*onPikchrshowLoaded()*/;


  /**
     Predefined scripts. Each entry is an object:

     {
     name: required string,
     code: optional code string. An entry with a falsy code is treated
           like a separator in the resulting SELECT element (a
           disabled OPTION).
     }
  */
  PS.predefinedPiks = [
    {name: "-- Example Scripts --", code: false},
/*
  The following were imported from the pikchr test scripts:

  https://fossil-scm.org/pikchr/dir/examples
*/
{name:"Cardinal headings",code:`   linerad = 5px
C: circle "Center" rad 150%
   circle "N"  at 1.0 n  of C; arrow from C to last chop ->
   circle "NE" at 1.0 ne of C; arrow from C to last chop <-
   circle "E"  at 1.0 e  of C; arrow from C to last chop <->
   circle "SE" at 1.0 se of C; arrow from C to last chop ->
   circle "S"  at 1.0 s  of C; arrow from C to last chop <-
   circle "SW" at 1.0 sw of C; arrow from C to last chop <->
   circle "W"  at 1.0 w  of C; arrow from C to last chop ->
   circle "NW" at 1.0 nw of C; arrow from C to last chop <-
   arrow from 2nd circle to 3rd circle chop
   arrow from 4th circle to 3rd circle chop
   arrow from SW to S chop <->
   circle "ESE" at 2.0 heading 112.5 from Center \
      thickness 150% fill lightblue radius 75%
   arrow from Center to ESE thickness 150% <-> chop
   arrow from ESE up 1.35 then to NE chop
   line dashed <- from E.e to (ESE.x,E.y)
   line dotted <-> thickness 50% from N to NW chop
`},{name:"Core object types",code:`AllObjects: [

# First row of objects
box "box"
box rad 10px "box (with" "rounded" "corners)" at 1in right of previous
circle "circle" at 1in right of previous
ellipse "ellipse" at 1in right of previous

# second row of objects
OVAL1: oval "oval" at 1in below first box
oval "(tall &" "thin)" "oval" width OVAL1.height height OVAL1.width \
    at 1in right of previous
cylinder "cylinder" at 1in right of previous
file "file" at 1in right of previous

# third row shows line-type objects
dot "dot" above at 1in below first oval
line right from 1.8cm right of previous "lines" above
arrow right from 1.8cm right of previous "arrows" above
spline from 1.8cm right of previous \
   go right .15 then .3 heading 30 then .5 heading 160 then .4 heading 20 \
   then right .15
"splines" at 3rd vertex of previous

# The third vertex of the spline is not actually on the drawn
# curve.  The third vertex is a control point.  To see its actual
# position, uncomment the following line:
#dot color red at 3rd vertex of previous spline

# Draw various lines below the first line
line dashed right from 0.3cm below start of previous line
line dotted right from 0.3cm below start of previous
line thin   right from 0.3cm below start of previous
line thick  right from 0.3cm below start of previous


# Draw arrows with different arrowhead configurations below
# the first arrow
arrow <-  right from 0.4cm below start of previous arrow
arrow <-> right from 0.4cm below start of previous

# Draw splines with different arrowhead configurations below
# the first spline
spline same from .4cm below start of first spline ->
spline same from .4cm below start of previous <-
spline same from .4cm below start of previous <->

] # end of AllObjects

# Label the whole diagram
text "Examples Of Pikchr Objects" big bold  at .8cm above north of AllObjects
`},{name:"Swimlanes",code:`    $laneh = 0.75

    # Draw the lanes
    down
    box width 3.5in height $laneh fill 0xacc9e3
    box same fill 0xc5d8ef
    box same as first box
    box same as 2nd box
    line from 1st box.sw+(0.2,0) up until even with 1st box.n \
      "Alan" above aligned
    line from 2nd box.sw+(0.2,0) up until even with 2nd box.n \
      "Betty" above aligned
    line from 3rd box.sw+(0.2,0) up until even with 3rd box.n \
      "Charlie" above aligned
    line from 4th box.sw+(0.2,0) up until even with 4th box.n \
       "Darlene" above aligned

    # fill in content for the Alice lane
    right
A1: circle rad 0.1in at end of first line + (0.2,-0.2) \
       fill white thickness 1.5px "1"
    arrow right 50%
    circle same "2"
    arrow right until even with first box.e - (0.65,0.0)
    ellipse "future" fit fill white height 0.2 width 0.5 thickness 1.5px
A3: circle same at A1+(0.8,-0.3) "3" fill 0xc0c0c0
    arrow from A1 to last circle chop "fork!" below aligned

    # content for the Betty lane
B1: circle same as A1 at A1-(0,$laneh) "1"
    arrow right 50%
    circle same "2"
    arrow right until even with first ellipse.w
    ellipse same "future"
B3: circle same at A3-(0,$laneh) "3"
    arrow right 50%
    circle same as A3 "4"
    arrow from B1 to 2nd last circle chop

    # content for the Charlie lane
C1: circle same as A1 at B1-(0,$laneh) "1"
    arrow 50%
    circle same "2"
    arrow right 0.8in "goes" "offline"
C5: circle same as A3 "5"
    arrow right until even with first ellipse.w \
      "back online" above "pushes 5" below "pulls 3 & 4" below
    ellipse same "future"

    # content for the Darlene lane
D1: circle same as A1 at C1-(0,$laneh) "1"
    arrow 50%
    circle same "2"
    arrow right until even with C5.w
    circle same "5"
    arrow 50%
    circle same as A3 "6"
    arrow right until even with first ellipse.w
    ellipse same "future"
D3: circle same as B3 at B3-(0,2*$laneh) "3"
    arrow 50%
    circle same "4"
    arrow from D1 to D3 chop
`},{
  name: "The Stuff of Dreams",
  code:`
O: text "DREAMS" color grey
circle rad 0.9 at 0.6 above O thick color red
text "INEXPENSIVE" big bold at 0.9 above O color red

circle rad 0.9   at 0.6 heading  120 from O thick color green
text "FAST" big bold at 0.9 heading  120 from O  color green

circle rad 0.9 at 0.6 heading -120 from O thick color blue
text "HIGH" big bold "QUALITY" big bold at 0.9 heading  -120 from O  color blue

text "EXPENSIVE" at 0.55 below O  color cyan
text "SLOW" at 0.55 heading  -60 from O  color magenta
text "POOR" "QUALITY" at 0.55 heading   60 from O  color gold
`},{name:"Precision Arrows",code:`
# Source: https://pikchr.org/home/forumpost/7f2f9a03eb
define quiver {
	dot invis at 0.5 < $1.ne , $1.e >
	dot invis at 0.5 < $1.nw , $1.w >
	dot invis at 0.5 < $1.se , $1.e >
	dot invis at 0.5 < $1.sw , $1.w >

	dot at $2 right of 4th previous dot
        dot at $3 right of 4th previous dot
	dot at $4 right of 4th previous dot
        dot at $5 right of 4th previous dot
	arrow <- from previous dot to 2nd previous dot
	arrow -> from 3rd previous dot to 4th previous dot
}

define show_compass_l {
	dot color red  at $1.e " .e" ljust
	dot same at $1.ne " .ne" ljust above
	line thick color green from previous to 2nd last dot
}

define show_compass_r {
	dot color red  at $1.w " .w" ljust
	dot same at $1.nw " .nw" ljust above
	line thick color green from previous to 2nd last dot
}

PROGRAM: file "Program" rad 45px
show_compass_l(PROGRAM)
QUIVER: box invis ht 0.75
DATABASE: oval "Database" ht 0.75 wid 1.1
show_compass_r(DATABASE)

quiver(QUIVER, 5px, -5px, 5px, 0px)

text "Query" with .c at 0.1in above last arrow
text "Records" with .c at 0.1in below 2nd last arrow
`}
  ];


})(window.fossil);
Added src/fossil.page.whistory.js.




































































































































































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/* This script adds interactivity for wiki-history webpages.
 *
 * The main code is within the 'on-click' handler of the "diff" links.
 * Instead of standard redirection it fills-in two hidden inputs with
 * the appropriate values and submits the corresponding form.
 * A special care should be taken if some intermediate edits are hidden.
 *
 * For the sake of compatibility with ascetic browsers the code tries
 * to avoid modern API and ECMAScript constructs. This makes it less
 * readable and may be reconsidered in the future.
*/
window.addEventListener( 'load', function() {

var form = document.getElementById("wh-form");
form.method = "GET";
var csrf = form.querySelector("input[name='csrf']");
if( csrf ) form.removeChild( csrf );

var wh_id  = document.getElementById("wh-id" );
var wh_pid = document.getElementById("wh-pid");
var wh_cleaner = document.getElementById("wh-cleaner");
var wh_collapser = document.getElementById("wh-collapser");

var wh_radios   = [];  // user-visible controls for baseline selection
var wh_hidden   =  0;  // current number of hidden (collapsed) rows
var wh_selected = -1;  // index of the currently selected radio-button

var wh_onRadio = function( event ){

  var indx = event.target.indx;
  if( wh_selected == indx ){

    wh_selected  = -1;
    event.target.checked = false;
  }
  else wh_selected = indx;
}
var wh_onDifflink = function( event ){

  event.preventDefault();
  var indx = event.target.indx;
  wh_id.value = wh_radios[indx].value;

  if( wh_hidden > 0 ){

    var p = indx + 1;
    if( wh_selected >= 0 ){

       var tr = wh_radios[wh_selected].parentElement.parentElement;
       if( ! tr.hidden )
          p = wh_selected;
    }
    while( p < wh_radios.length ){

      if( ! wh_radios[p].parentElement.parentElement.hidden )
	     break;
      p++;
    }
    if( p < wh_radios.length ){

       wh_pid.value = wh_radios[p].value;
       wh_pid.checked = true;
    }
    else {  // just render the wiki for the case of the first major edit

      var path = document.location.pathname.split("/");
      path.pop();
      var newpath = path.join("/") + "/info/" + wh_radios[indx].value;
      document.location = document.location.origin + newpath;
      return;
    }
  }
  else if( wh_selected >= 0 ) {

     wh_pid.value = wh_radios[wh_selected].value;
     wh_pid.checked = true;
  }
  else wh_pid.checked = false;

  document.getElementById("wh-form").submit();
}
var wh_onCleaner = function() {

   if( wh_selected >= 0 ) {

      wh_radios[wh_selected].checked = false;
      wh_selected = -1;
   }
}
var wh_onCollapser = function( event ){

  var collapsing = ( wh_hidden == 0 );
  for( var k = 0; k < wh_radios.length; k++ ){

    var radio = wh_radios[k];
    var tr = radio.parentElement.parentElement;
    if( tr.className == "wh-intermediate" ){

	  if( tr.hidden = ! tr.hidden )
	    wh_hidden++;
	  else
	    wh_hidden--;

    } else if( radio.iterspan )
               radio.iterspan.hidden = ! collapsing;
  }
  if( wh_hidden > 0 ) {

    wh_collapser.title="Show intermediate edits";
    wh_collapser.innerHTML = "&emsp;&#9851; " + wh_hidden;
  }
  else {

    wh_collapser.title="Hide intermediate edits";
    wh_collapser.innerHTML = "&emsp;&#9842;"
  }
}

var inputs = document.getElementsByTagName("input");
for( var k = 0, indx = 0; k < inputs.length; k++ ) {

   var r = inputs[k];
   if( r.type == "radio" && r.name == "baseline" ) {

      wh_radios.push( r );
	  r.indx = indx++;
      r.addEventListener( "click", wh_onRadio );
      r.disabled = false;
      var td = r.parentElement.nextElementSibling;
      r.iterspan = td.getElementsByTagName("span")[0];
   }
}
for( var edits = 0, k = wh_radios.length - 1; k >= 0; k-- ) {

   var td = wh_radios[k].parentElement.nextElementSibling;
   if( td.parentElement.className == "wh-intermediate" )

      edits++;

   else if( edits > 0 ){

      var span = td.getElementsByTagName("span")[0];
      span.innerHTML = "&ensp;&#9842;" + edits;
      wh_radios[k].iterspan = span;
      edits = 0;
      //   also:  &#8746; (union)   &#931; (sigma)   &#215; (times)
   }
}
var links = document.getElementsByTagName("a");
for( var i = 0, indx = 0; i < links.length; i++ ) {

   var l = links[i];
   if( l.className == "wh-difflink" ){

      l.indx = indx++;
      l.addEventListener( "click", wh_onDifflink );
   }
}
wh_cleaner.addEventListener( "click", wh_onCleaner );
wh_collapser.addEventListener( "click", wh_onCollapser );
wh_collapser.title="Hide intermediate edits";
wh_collapser.hidden = false;

}); // window.addEventListener( 'load' ...
Added src/fossil.page.wikiedit.js.



























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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(function(F/*the fossil object*/){
  "use strict";
  /**
     Client-side implementation of the /wikiedit app. Requires that
     the fossil JS bootstrapping is complete and that several fossil
     JS APIs have been installed: fossil.fetch, fossil.dom,
     fossil.tabs, fossil.storage, fossil.confirmer, fossil.popupwidget.

     Custom events which can be listened for via
     fossil.page.addEventListener():

     - Event 'wiki-page-loaded': passes on information when it
     loads a wiki (whether from the network or its internal local-edit
     cache), in the form of an "winfo" object:

     {
       name: string,
       mimetype: mimetype string,
       type: "normal" | "tag" | "checkin" | "branch" | "sandbox",
       version: UUID string or null for a sandbox page or new page,
       parent: parent UUID string or null if no parent,
       isEmpty: true if page has no content (is "deleted").
       content: string, optional in most contexts
     }

     The internal docs and code frequently use the term "winfo", and such
     references refer to an object with that form.

     The fossil.page.wikiContent() method gets or sets the current
     file content for the page.

     - Event 'wiki-saved': is fired when a commit completes,
     passing on the same info as wiki-page-loaded.

     - Event 'wiki-content-replaced': when the editor's content is
     replaced, as opposed to it being edited via user
     interaction. This normally happens via selecting a file to
     load. The event detail is the fossil.page object, not the current
     file content.

     - Event 'wiki-preview-updated': when the preview is refreshed
     from the server, this event passes on information about the preview
     change in the form of an object:

     {
     element: the DOM element which contains the content preview.
     mimetype: the page's mimetype.
     }

     Here's an example which can be used with the highlightjs code
     highlighter to update the highlighting when the preview is
     refreshed in "wiki" mode (which includes fossil-native wiki and
     markdown):

     fossil.page.addEventListener(
       'wiki-preview-updated',
       (ev)=>{
         if(ev.detail.mimetype!=='text/plain'){
           ev.detail.element.querySelectorAll(
             'code[class^=language-]'
           ).forEach((e)=>hljs.highlightBlock(e));
         }
       }
     );
  */
  const E = (s)=>document.querySelector(s),
        D = F.dom,
        P = F.page;
  P.config = {
    /* Max number of locally-edited pages to stash, after which we
       drop the least-recently used. */
    defaultMaxStashSize: 10,
    useConfirmerButtons:{
    /* If true during fossil.page setup, certain buttons will use a
       "confirmer" step, else they will not. The confirmer topic has
       been the source of much contention in the forum. */
      save: false,
      reload: true,
      discardStash: true
    },
    /**
       If true, a keyboard combo of shift-enter (from the editor)
       toggles between preview and edit modes.  This is normally
       desired but at least one software keyboard is known to
       misinteract with this, treating an Enter after
       automatically-capitalized letters as a shift-enter:

       https://fossil-scm.org/forum/forumpost/dbd5b68366147ce8

       Maintenance note: /fileedit also uses this same key for the
       same purpose.
    */
    shiftEnterPreview: F.storage.getBool('edit-shift-enter-preview', true)
  };

  /**
     $stash is an internal-use-only object for managing "stashed"
     local edits, to help avoid that users accidentally lose content
     by switching tabs or following links or some such. The basic
     theory of operation is...

     All "stashed" state is stored using fossil.storage.

     - When the current wiki content is modified by the user, the
       current state of the page is stashed.

     - When saving, the stashed entry for the previous version is
       removed from the stash.

     - When "loading", we use any stashed state for the given
       checkin/file combination. When forcing a re-load of content,
       any stashed entry for that combination is removed from the
       stash.

     - Every time P.stashContentChange() updates the stash, it is
       pruned to $stash.prune.defaultMaxCount most-recently-updated
       entries.

     - This API often refers to "winfo objects." Those are objects
       with a minimum of {page,mimetype} properties (which must be
       valid), and the page name is used as basis for the stash keys
       for any given page.

     The structure of the stash is a bit convoluted for efficiency's
     sake: we store a map of file info (winfo) objects separately from
     those files' contents because otherwise we would be required to
     JSONize/de-JSONize the file content when stashing/restoring it,
     and that would be horribly inefficient (meaning "battery-consuming"
     on mobile devices).
  */
  const $stash = {
    keys: {
      index: F.page.name+'.index'
    },
    /**
       index: {
       "PAGE_NAME": {wiki page info w/o content}
       ...
       }

       In F.storage we...

       - Store this.index under the key this.keys.index.

       - Store each page's content under the key
       (P.name+'/PAGE_NAME'). These are stored separately from the
       index entries to avoid having to JSONize/de-JSONize the
       content. The assumption/hope is that the browser can store
       those records "directly," without any intermediary
       encoding/decoding going on.
    */
    indexKey: function(winfo){return winfo.name},
    /** Returns the key for storing content for the given key suffix,
        by prepending P.name to suffix. */
    contentKey: function(suffix){return P.name+'/'+suffix},
    /** Returns the index object, fetching it from the stash or creating
        it anew on the first call. */
    getIndex: function(){
      if(!this.index){
        this.index = F.storage.getJSON(
          this.keys.index, {}
        );
      }
      return this.index;
    },
    _fireStashEvent: function(){
      if(this._disableNextEvent) delete this._disableNextEvent;
      else F.page.dispatchEvent('wiki-stash-updated', this);
    },
    /**
       Returns the stashed version, if any, for the given winfo object.
    */
    getWinfo: function(winfo){
      const ndx = this.getIndex();
      return ndx[this.indexKey(winfo)];
    },
    /** Serializes this object's index to F.storage. Returns this. */
    storeIndex: function(){
      if(this.index) F.storage.setJSON(this.keys.index,this.index);
      return this;
    },
    /** Updates the stash record for the given winfo
        and (optionally) content. If passed 1 arg, only
        the winfo stash is updated, else both the winfo
        and its contents are (re-)stashed. Returns this.
    */
    updateWinfo: function(winfo,content){
      const ndx = this.getIndex(),
            key = this.indexKey(winfo),
            old = ndx[key];
      const record = old || (ndx[key]={
        name: winfo.name
      });
      record.mimetype = winfo.mimetype;
      record.type = winfo.type;
      record.parent = winfo.parent;
      record.version = winfo.version;      
      record.stashTime = new Date().getTime();
      record.isEmpty = !!winfo.isEmpty;
      record.attachments = winfo.attachments;
      this.storeIndex();
      if(arguments.length>1){
        if(content) delete record.isEmpty;
        F.storage.set(this.contentKey(key), content);
      }
      this._fireStashEvent();
      return this;
    },
    /**
       Returns the stashed content, if any, for the given winfo
       object.
    */       
    stashedContent: function(winfo){
      return F.storage.get(this.contentKey(this.indexKey(winfo)));
    },
    /** Returns true if we have stashed content for the given winfo
        record or page name. */
    hasStashedContent: function(winfo){
      if('string'===typeof winfo) winfo = {name: winfo};
      return F.storage.contains(this.contentKey(this.indexKey(winfo)));
    },
    /** Unstashes the given winfo record and its content.
        Returns this. */
    unstash: function(winfo){
      const ndx = this.getIndex(),
            key = this.indexKey(winfo);
      delete winfo.stashTime;
      delete ndx[key];
      F.storage.remove(this.contentKey(key));
      this.storeIndex();
      this._fireStashEvent();
      return this;
    },
    /**
       Clears all $stash entries from F.storage. Returns this.
     */
    clear: function(){
      const ndx = this.getIndex(),
            self = this;
      let count = 0;
      Object.keys(ndx).forEach(function(k){
        ++count;
        const e = ndx[k];
        delete ndx[k];
        F.storage.remove(self.contentKey(k));
      });
      F.storage.remove(this.keys.index);
      delete this.index;
      if(count) this._fireStashEvent();
      return this;
    },
    /**
       Removes all but the maxCount most-recently-updated stash
       entries, where maxCount defaults to this.prune.defaultMaxCount.
    */
    prune: function f(maxCount){
      const ndx = this.getIndex();
      const li = [];
      if(!maxCount || maxCount<0) maxCount = f.defaultMaxCount;
      Object.keys(ndx).forEach((k)=>li.push(ndx[k]));
      li.sort((l,r)=>l.stashTime - r.stashTime);
      let n = 0;
      while(li.length>maxCount){
        ++n;
        const e = li.shift();
        this._disableNextEvent = true;
        this.unstash(e);
        console.warn("Pruned oldest local file edit entry:",e);
      }
      if(n) this._fireStashEvent();
    }
  };
  $stash.prune.defaultMaxCount = P.config.defaultMaxStashSize || 10;
  P.$stash = $stash /* we have to expose this for the new-page case :/ */;
  
  /**
     Internal workaround to select the current preview mode
     and fire a change event if the value actually changes
     or if forceEvent is truthy.
  */
  P.selectMimetype = function(modeValue, forceEvent){
    const s = this.e.selectMimetype;
    if(!modeValue) modeValue = s.value;
    else if(s.value != modeValue){
      s.value = modeValue;
      forceEvent = true;
    }
    if(forceEvent){
      // Force UI update
      s.dispatchEvent(new Event('change',{target:s}));
    }
  };

  /**
     Internal helper to get an edit status indicator for the given
     winfo object. Pass it a winfo object or one of the "constants"
     which are assigned as member properties of this function (see
     below its definition).
  */
  const getEditMarker = function f(winfo, textOnly){
    const esm = F.config.editStateMarkers;
    if(f.NEW===winfo){ /* force is-new */
        return textOnly ? esm.isNew :
        D.addClass(D.append(D.span(),esm.isNew), 'is-new');
    }else if(f.MODIFIED===winfo){ /* force is-modified */
        return textOnly ? esm.isModified :
        D.addClass(D.append(D.span(),esm.isModified), 'is-modified');
    }else if(f.DELETED===winfo){/* force is-deleted */
        return textOnly ? esm.isDeleted :
        D.addClass(D.append(D.span(),esm.isDeleted), 'is-deleted');
    }else if(winfo && winfo.version){ /* is existing page modified? */
      if($stash.getWinfo(winfo)){
        return textOnly ? esm.isModified :
          D.addClass(D.append(D.span(),esm.isModified), 'is-modified');
      }
      /*fall through*/
    }
    else if(winfo){ /* is new non-sandbox or is modified sandbox? */
      if('sandbox'!==winfo.type){
        return textOnly ? esm.isNew :
          D.addClass(D.append(D.span(),esm.isNew), 'is-new');
      }else if($stash.getWinfo(winfo)){
        return textOnly ? esm.isModified :
          D.addClass(D.append(D.span(),esm.isModified), 'is-modified');
      }
    }
    return textOnly ? '' : D.span();
  };
  getEditMarker.NEW = 1;
  getEditMarker.MODIFIED = 2;
  getEditMarker.DELETED = 3;

  /**
     Returns undefined if winfo is falsy, true if the given winfo
     object appears to be "new", else returns false.
  */
  const winfoIsNew = function(winfo){
    if(!winfo) return undefined;
    else if('sandbox' === winfo.type) return false;
    else return !winfo.version;
  };

  /**
     Sets up and maintains the widgets for the list of wiki pages.
  */
  const WikiList = {
    e: {
      filterCheckboxes: {
        /*map of wiki page type to checkbox for list filtering purposes,
          except for "sandbox" type, which is assumed to be covered by
          the "normal" type filter. */},
    },
    cache: {
      pageList: [],
      optByName:{/*map of page names to OPTION object, to speed up
                   certain operations.*/},
      names: {
        /* Map of page names to "something." We don't map to their
           winfo bits because those regularly get swapped out via
           de/serialization. We need this map to support the add-new-page
           feature, to give us a way to check for dupes without asking
           the server or walking through the whole selection list.
        */}
    },
    /**
       Updates OPTION elements to reflect whether the page has local
       changes or is new/unsaved. This implementation is horribly
       inefficient, in that we have to walk and validate the whole
       list for each stash-level change.

       If passed an argument, it is assumed to be an OPTION element
       and only that element is updated, else all OPTION elements
       in this.e.select are updated.
 
       Reminder to self: in order to mark is-edited/is-new state we
       have to update the OPTION element's inner text to reflect the
       is-modified/is-new flags, rather than use CSS classes to tag
       them, because mobile Chrome can neither restyle OPTION elements
       no render ::before content on them. We *also* use CSS tags, but
       they aren't sufficient for the mobile browsers.
    */
    _refreshStashMarks: function callee(option){
      if(!callee.eachOpt){
        const self = this;
        callee.eachOpt = function(keyOrOpt){
          const opt = 'string'===typeof keyOrOpt ? self.e.select.options[keyOrOpt] : keyOrOpt;
          const stashed = $stash.getWinfo({name:opt.value});
          var prefix = '';
          D.removeClass(opt, 'stashed', 'stashed-new', 'deleted');
          if(stashed){
            const isNew = winfoIsNew(stashed);
            prefix = getEditMarker(isNew ? getEditMarker.NEW : getEditMarker.MODIFIED, true);
            D.addClass(opt, isNew ? 'stashed-new' : 'stashed');
            D.removeClass(opt, 'deleted');
          }else if(opt.dataset.isDeleted){
            prefix = getEditMarker(getEditMarker.DELETED,true);
            D.addClass(opt, 'deleted');
          }
          opt.innerText = prefix + opt.value;
          self.cache.names[opt.value] = true;
        };
      }
      if(arguments.length){
        callee.eachOpt(option);
      }else{
        this.cache.names = {/*must reset it to acount for local page removals*/};
        Object.keys(this.e.select.options).forEach(callee.eachOpt);
      }
    },
    /** Removes the given wiki page entry from the page selection
        list, if it's in the list. */
    removeEntry: function(name){
      const sel = this.e.select;
      var ndx = sel.selectedIndex;
      sel.value = name;
      if(sel.selectedIndex>-1){
        if(ndx === sel.selectedIndex) ndx = -1;
        sel.options.remove(sel.selectedIndex);
      }
      sel.selectedIndex = ndx;
      delete this.cache.names[name];
      delete this.cache.optByName[name];
      this.cache.pageList = this.cache.pageList.filter((wi)=>name !== wi.name);
    },

    /**
       Rebuilds the selection list. Necessary when it's loaded from
       the server, we locally create a new page, or we remove a
       locally-created new page.
    */
    _rebuildList: function callee(){
      /* Jump through some hoops to integrate new/unsaved
         pages into the list of existing pages... We use a map
         as an intermediary in order to filter out any local-stash
         dupes from server-side copies. */
      const list = this.cache.pageList;
      if(!list) return;
      if(!callee.sorticase){
        callee.sorticase = function(l,r){
          if(l===r) return 0;
          l = l.toLowerCase();
          r = r.toLowerCase();
          return l<=r ? -1 : 1;
        };
      }
      const map = {}, ndx = $stash.getIndex(), sel = this.e.select;
      D.clearElement(sel);
      list.forEach((winfo)=>map[winfo.name] = winfo);
      Object.keys(ndx).forEach(function(key){
        const winfo = ndx[key];
        if(!winfo.version/*new page*/) map[winfo.name] = winfo;
      });
      const self = this;
      Object.keys(map)
        .sort(callee.sorticase)
        .forEach(function(name){
          const winfo = map[name];
          const opt = D.option(sel, winfo.name);
          const wtype = opt.dataset.wtype =
                winfo.type==='sandbox' ? 'normal' : (winfo.type||'normal');
          const cb = self.e.filterCheckboxes[wtype];
          self.cache.optByName[winfo.name] = opt;
          if(cb && !cb.checked) D.addClass(opt, 'hidden');
          if(winfo.isEmpty){
            opt.dataset.isDeleted = true;
          }
          self._refreshStashMarks(opt);
        });
      D.enable(sel);
      if(P.winfo) sel.value = P.winfo.name;
    },

    /** Loads the page list and populates the selection list. */
    loadList: function callee(){
      if(!callee.onload){
        const self = this;
        callee.onload = function(list){
          self.cache.pageList = list;
          self._rebuildList();
          F.message("Loaded page list.");
        };
      }
      if(P.initialPageList){
        /* ^^^ injected at page-creation time. */
        const list = P.initialPageList;
        delete P.initialPageList;
        callee.onload(list);
      }else{
        F.fetch('wikiajax/list',{
          urlParams:{verbose:true},
          responseType: 'json',
          onload: callee.onload
        });
      }
      return this;
    },

    /**
       Returns true if the given name appears to be a valid
       wiki page name, noting that the final arbitrator is the
       server. On validation error it emits a message via fossil.error()
       and returns false.
    */
    validatePageName: function(name){
      var err;
      if(!name){
        err = "may not be empty";
      }else if(this.cache.names.hasOwnProperty(name)){
        err = "page already exists: "+name;
      }else if(name.length>100){
        err = "too long (limit is 100)";
      }else if(/\s{2,}/.test(name)){
        err = "multiple consecutive spaces";
      }else if(/[\t\r\n]/.test(name)){
        err = "contains control character(s)";
      }else{
        let i = 0, n = name.length, c;
        for( ; i < n; ++i ){
          if(name.charCodeAt(i)<0x20){
            err = "contains control character(s)";
            break;
          }
        }
      }
      if(err){
        F.error("Invalid name:",err);
      }
      return !err;
    },

    /**
       If the given name is valid, a new page with that (trimmed) name
       is added to the local stash.
    */
    addNewPage: function(name){
      name = name.trim();
      if(!this.validatePageName(name)) return false;
      var wtype = 'normal';
      if(0===name.indexOf('checkin/')) wtype = 'checkin';
      else if(0===name.indexOf('branch/')) wtype = 'branch';
      else if(0===name.indexOf('tag/')) wtype = 'tag';
      /* ^^^ note that we're not validating that, e.g., checkin/XYZ
         has a full artifact ID after "checkin/". */
      const winfo = {
        name: name, type: wtype, mimetype: 'text/x-markdown',
        version: null, parent: null
      };
      this.cache.pageList.push(
        winfo/*keeps entry from getting lost from the list on save*/
      );
      $stash.updateWinfo(winfo, '');
      this._rebuildList();
      P.loadPage(winfo.name);
      return true;
    },

    /**
       Installs a wiki page selection list into the given parent DOM
       element and loads the page list from the server.
    */
    init: function(parentElem){
      const sel = D.select(), btn = D.addClass(D.button("Reload page list"), 'save');
      this.e.select = sel;
      D.addClass(parentElem, 'WikiList');
      D.clearElement(parentElem);
      D.append(
        parentElem,
        D.append(D.fieldset("Select a page to edit"),
                 sel)
      );
      D.attr(sel, 'size', 12);
      D.option(D.disable(D.clearElement(sel)), undefined, "Loading...");

      /** Set up filter checkboxes for the various types
          of wiki pages... */
      const fsFilter = D.addClass(D.fieldset("Page types"),"page-types-list"),
            fsFilterBody = D.div(),
            filters = ['normal', 'branch/...', 'tag/...', 'checkin/...']
      ;
      D.append(fsFilter, fsFilterBody);
      D.addClass(fsFilterBody, 'flex-container', 'flex-column', 'stretch');

      // Add filters by page type...
      const self = this;
      const filterByType = function(wtype, show){
        sel.querySelectorAll('option[data-wtype='+wtype+']').forEach(function(opt){
          if(show) opt.classList.remove('hidden');
          else opt.classList.add('hidden');
        });
      };
      filters.forEach(function(label){
        const wtype = label.split('/')[0];
        const cbId = 'wtype-filter-'+wtype,
              lbl = D.attr(D.append(D.label(),label),
                           'for', cbId),
              cb = D.attr(D.input('checkbox'), 'id', cbId);
        D.append(fsFilterBody, D.append(D.span(), cb, lbl));
        self.e.filterCheckboxes[wtype] = cb;
        cb.checked = true;
        filterByType(wtype, cb.checked);
        cb.addEventListener(
          'change',
          function(ev){filterByType(wtype, ev.target.checked)},
          false
        );
      });
      { /* add filter for "deleted" pages */
        const cbId = 'wtype-filter-deleted',
              lbl = D.attr(D.append(D.label(),
                                    getEditMarker(getEditMarker.DELETED,false),
                                    'deleted'),
                           'for', cbId),
              cb = D.attr(D.input('checkbox'), 'id', cbId);
        cb.checked = false;
        D.addClass(parentElem,'hide-deleted');
        D.attr(lbl);
        const deletedTip = F.helpButtonlets.create(
          D.span(),
          'Fossil considers empty pages to be "deleted" in some contexts.'
        );
        D.append(fsFilterBody, D.append(
          D.span(), cb, lbl, deletedTip
        ));
        cb.addEventListener(
          'change',
          function(ev){
            if(ev.target.checked) D.removeClass(parentElem,'hide-deleted');
            else D.addClass(parentElem,'hide-deleted');
          },
          false);
      }
      /* A legend of the meanings of the symbols we use in
         the OPTION elements to denote certain state. */
      const fsLegend = D.fieldset("Edit status"),
            fsLegendBody = D.div();
      D.append(fsLegend, fsLegendBody);
      D.addClass(fsLegendBody, 'flex-container', 'flex-column', 'stretch');
      D.append(
        fsLegendBody,
        D.append(D.span(), getEditMarker(getEditMarker.NEW,false)," = new/unsaved"),
        D.append(D.span(), getEditMarker(getEditMarker.MODIFIED,false)," = has local edits"),
        D.append(D.span(), getEditMarker(getEditMarker.DELETED,false)," = is empty (deleted)")
      );

      const fsNewPage = D.fieldset("Create new page"),
            fsNewPageBody = D.div(),
            newPageName = D.input('text'),
            newPageBtn = D.button("Add page locally")
            ;
      D.append(parentElem, fsNewPage);
      D.append(fsNewPage, fsNewPageBody);
      D.addClass(fsNewPageBody, 'flex-container', 'flex-column', 'new-page');
      D.append(
        fsNewPageBody, newPageName, newPageBtn,
        D.append(D.addClass(D.span(), 'mini-tip'),
                 "New pages exist only in this browser until they are saved.")
      );
      newPageBtn.addEventListener('click', function(){
        if(self.addNewPage(newPageName.value)){
          newPageName.value = '';
        }
      }, false);

      D.append(
        parentElem,
        D.append(D.addClass(D.div(), 'fieldset-wrapper'),
                 fsFilter, fsNewPage, fsLegend)
      );

      D.append(parentElem, btn);
      btn.addEventListener('click', ()=>this.loadList(), false);
      this.loadList();
      const onSelect = (e)=>P.loadPage(e.target.value);
      sel.addEventListener('change', onSelect, false);
      sel.addEventListener('dblclick', onSelect, false);
      F.page.addEventListener('wiki-stash-updated', ()=>{
        if(P.winfo) this._refreshStashMarks();
        else this._rebuildList();
      });
      F.page.addEventListener('wiki-page-loaded', function(ev){
        /* Needed to handle the saved-an-empty-page case. */
        const page = ev.detail,
              opt = self.cache.optByName[page.name];
        if(opt){
          if(page.isEmpty) opt.dataset.isDeleted = true;
          else delete opt.dataset.isDeleted;
          self._refreshStashMarks(opt);
        }else if('sandbox'!==page.type){
          F.error("BUG: internal mis-handling of page object: missing OPTION for page "+page.name);
        }
      });

      const cbEditPreview = E('#edit-shift-enter-preview');
      cbEditPreview.addEventListener('change', function(e){
        F.storage.set('edit-shift-enter-preview',
                      P.config.shiftEnterPreview = e.target.checked);
      }, false);
      cbEditPreview.checked = P.config.shiftEnterPreview;
      delete this.init;
    }/*init()*/
  };

  /**
     Widget for listing and selecting $stash entries.
  */
  P.stashWidget = {
    e:{/*DOM element(s)*/},
    init: function(domInsertPoint/*insert widget BEFORE this element*/){
      const wrapper = D.addClass(
        D.attr(D.div(),'id','wikiedit-stash-selector'),
        'input-with-label'
      );
      const sel = this.e.select = D.select(),
            btnClear = this.e.btnClear = D.button("Discard Edits"),
            btnHelp = D.append(
              D.addClass(D.div(), "help-buttonlet"),
              'Locally-edited wiki pages. Timestamps are the last local edit time. ',
              'Only the ',P.config.defaultMaxStashSize,' most recent pages ',
              'are retained. Saving or reloading a file removes it from this list. ',
              D.append(D.code(),F.storage.storageImplName()),
              ' = ',F.storage.storageHelpDescription()
            );
      D.append(wrapper, "Local edits (",
               D.append(D.code(),
                        F.storage.storageImplName()),
               "):",
               btnHelp, sel, btnClear);
      F.helpButtonlets.setup(btnHelp);
      D.option(D.disable(sel), undefined, "(empty)");
      P.addEventListener('wiki-stash-updated',(e)=>this.updateList(e.detail));
      P.addEventListener('wiki-page-loaded',(e)=>this.updateList($stash, e.detail));
      sel.addEventListener('change',function(e){
        const opt = this.selectedOptions[0];
        if(opt && opt._winfo) P.loadPage(opt._winfo);
      });
      if(F.storage.isTransient()){/*Warn if our storage is particularly transient...*/
        D.append(wrapper, D.append(
          D.addClass(D.span(),'warning'),
          "Warning: persistent storage is not available, "+
            "so uncomitted edits will not survive a page reload."
        ));
      }
      domInsertPoint.parentNode.insertBefore(wrapper, domInsertPoint);
      if(P.config.useConfirmerButtons.discardStash){
        /* Must come after btnClear is in the DOM AND the button must
           not be hidden, else pinned sizing won't work. */
        F.confirmer(btnClear, {
          pinSize: true,
          confirmText: "DISCARD all local edits?",
          onconfirm: ()=>P.clearStash(),
          ticks: F.config.confirmerButtonTicks
        });
      }else{
        btnClear.addEventListener('click', ()=>P.clearStash(), false);
      }
      D.addClass(btnClear,'hidden');
      $stash._fireStashEvent(/*read the page-load-time stash*/);
      delete this.init;
    },
    /**
       Regenerates the edit selection list.
    */
    updateList: function f(stasher,theWinfo){
      if(!f.compare){
        const cmpBase = (l,r)=>l<r ? -1 : (l===r ? 0 : 1);
        f.compare = (l,r)=>cmpBase(l.name.toLowerCase(), r.name.toLowerCase());
        f.rxZ = /\.\d+Z$/ /* ms and 'Z' part of date string */;
        const pad=(x)=>(''+x).length>1 ? x : '0'+x;
        f.timestring = function(d){
          return [
            d.getFullYear(),'-',pad(d.getMonth()+1/*sigh*/),'-',pad(d.getDate()),
            '@',pad(d.getHours()),':',pad(d.getMinutes())
          ].join('');
        };
      }
      const index = stasher.getIndex(), ilist = [];
      Object.keys(index).forEach((winfo)=>{
        ilist.push(index[winfo]);
      });
      const self = this;
      D.clearElement(this.e.select);
      if(0===ilist.length){
        D.addClass(this.e.btnClear, 'hidden');
        D.option(D.disable(this.e.select),undefined,"No local edits");
        return;
      }
      D.enable(this.e.select);
      if(true){
        /* The problem with this Clear button is that it allows the
           user to nuke a non-empty newly-added page without the
           failsafe confirmation we have if they use
           P.e.btnReload. Not yet sure how best to resolve that. */
        D.removeClass(this.e.btnClear, 'hidden');
      }
      D.disable(D.option(this.e.select,undefined,"Select a local edit..."));
      const currentWinfo = theWinfo || P.winfo || {name:''};
      ilist.sort(f.compare).forEach(function(winfo,n){
        const key = stasher.indexKey(winfo),
              rev = winfo.version || '';
        const opt = D.option(
          self.e.select, n+1/*value is (almost) irrelevant*/,
          [winfo.name,
           ' [',
           rev ? F.hashDigits(rev) : (
             winfo.type==='sandbox' ? 'sandbox' : 'new/local'
           ),'] ',
           f.timestring(new Date(winfo.stashTime))
          ].join('')
        );
        opt._winfo = winfo;
        if(0===f.compare(currentWinfo, winfo)){
          D.attr(opt, 'selected', true);
        }
      });
    }
  }/*P.stashWidget*/;

  /**
     Keep track of how many in-flight AJAX requests there are so we
     can disable input elements while any are pending. For
     simplicity's sake we simply disable ALL OF IT while any AJAX is
     pending, rather than disabling operation-specific UI elements,
     which would be a huge maintenance hassle.

     Noting, however, that this global on/off is not *quite*
     pedantically correct. Pedantically speaking. If an element is
     disabled before an XHR starts, this code "should" notice that and
     not include it in the to-re-enable list. That would be annoying
     to do, and becomes impossible to do properly once multiple XHRs
     are in transit and an element is disabled seprately between two
     of those in-transit requests (that would be an unlikely, but
     possible, corner case).
  */
  const ajaxState = {
    count: 0 /* in-flight F.fetch() requests */,
    toDisable: undefined /* elements to disable during ajax activity */
  };
  F.fetch.beforesend = function f(){
    if(!ajaxState.toDisable){
      ajaxState.toDisable = document.querySelectorAll(
        ['button:not([disabled])',
         'input:not([disabled])',
         'select:not([disabled])',
         'textarea:not([disabled])',
         'fieldset:not([disabled])'
        ].join(',')
      );
    }
    if(1===++ajaxState.count){
      D.addClass(document.body, 'waiting');
      D.disable(ajaxState.toDisable);
    }
  };
  F.fetch.aftersend = function(){
    if(0===--ajaxState.count){
      D.removeClass(document.body, 'waiting');
      D.enable(ajaxState.toDisable);
      delete ajaxState.toDisable /* required to avoid enable/disable
                                    race condition with the save button */;
    }
  };

  F.onPageLoad(function() {
    document.body.classList.add('wikiedit');
    P.base = {tag: E('base'), wikiUrl: F.repoUrl('wiki')};
    P.base.originalHref = P.base.tag.href;
    P.e = { /* various DOM elements we work with... */
      taEditor: E('#wikiedit-content-editor'),
      btnReload: E("#wikiedit-tab-content button.wikiedit-content-reload"),
      btnSave: E("button.wikiedit-save"),
      btnSaveClose: E("button.wikiedit-save-close"),
      selectMimetype: E('select[name=mimetype]'),
      selectFontSizeWrap: E('#select-font-size'),
//      selectDiffWS:  E('select[name=diff_ws]'),
      cbAutoPreview: E('#cb-preview-autorefresh'),
      previewTarget: E('#wikiedit-tab-preview-wrapper'),
      diffTarget: E('#wikiedit-tab-diff-wrapper'),
      editStatus: E('#wikiedit-edit-status'),
      tabContainer: E('#wikiedit-tabs'),
      attachmentContainer: E("#attachment-wrapper"),
      tabs:{
        pageList: E('#wikiedit-tab-pages'),
        content: E('#wikiedit-tab-content'),
        preview: E('#wikiedit-tab-preview'),
        diff: E('#wikiedit-tab-diff'),
        misc: E('#wikiedit-tab-misc')
        //commit: E('#wikiedit-tab-commit')
      }
    };
    P.tabs = new F.TabManager(D.clearElement(P.e.tabContainer));
    /* Move the status bar between the tab buttons and
       tab panels. Seems to be the best fit in terms of
       functionality and visibility. */
    P.tabs.addCustomWidget( E('#fossil-status-bar') ).addCustomWidget(P.e.editStatus);
    let currentTab/*used for ctrl-enter switch between editor and preview*/;
    P.tabs.addEventListener(
      /* Set up some before-switch-to tab event tasks... */
      'before-switch-to', function(ev){
        const theTab = currentTab = ev.detail, btnSlot = theTab.querySelector('.save-button-slot');
        if(btnSlot){
          /* Several places make sense for a save button, so we'll
             move that button around to those tabs where it makes sense. */
          btnSlot.parentNode.insertBefore( P.e.btnSave.parentNode, btnSlot );
          btnSlot.parentNode.insertBefore( P.e.btnSaveClose.parentNode, btnSlot );
          P.updateSaveButton();
        }
        if(theTab===P.e.tabs.preview){
          P.baseHrefForWiki();
          if(P.previewNeedsUpdate && P.e.cbAutoPreview.checked) P.preview();
        }else if(theTab===P.e.tabs.diff){
          /* Work around a weird bug where the page gets wider than
             the window when the diff tab is NOT in view and the
             current SBS diff widget is wider than the window. When
             the diff IS in view then CSS overflow magically reduces
             the page size again. Weird. Maybe FF-specific. Note that
             this weirdness happens even though P.e.diffTarget's parent
             is hidden (and therefore P.e.diffTarget is also hidden).
          */
          D.removeClass(P.e.diffTarget, 'hidden');
        }
      }
    );
    P.tabs.addEventListener(
      /* Set up auto-refresh of the preview tab... */
      'before-switch-from', function(ev){
        const theTab = ev.detail;
        if(theTab===P.e.tabs.preview){
          P.baseHrefRestore();
        }else if(theTab===P.e.tabs.diff){
          /* See notes in the before-switch-to handler. */
          D.addClass(P.e.diffTarget, 'hidden');
        }
      }
    );
    ////////////////////////////////////////////////////////////
    // Trigger preview on Ctrl-Enter. This only works on the built-in
    // editor widget, not a client-provided one.
    P.e.taEditor.addEventListener('keydown',function(ev){
      if(P.config.shiftEnterPreview && ev.shiftKey && 13===ev.keyCode){
        ev.preventDefault();
        ev.stopPropagation();
        P.e.taEditor.blur(/*force change event, if needed*/);
        P.tabs.switchToTab(P.e.tabs.preview);
        if(!P.e.cbAutoPreview.checked){/* If NOT in auto-preview mode, trigger an update. */
          P.preview();
        }
      }
    }, false);
    // If we're in the preview tab, have ctrl-enter switch back to the editor.
    document.body.addEventListener('keydown',function(ev){
      if(ev.shiftKey && 13 === ev.keyCode){
        if(currentTab === P.e.tabs.preview){
          ev.preventDefault();
          ev.stopPropagation();
          P.tabs.switchToTab(P.e.tabs.content);
          P.e.taEditor.focus(/*doesn't work for client-supplied editor widget!
                              And it's slow as molasses for long docs, as focus()
                              forces a document reflow. */);
          //console.debug("BODY ctrl-enter");
          return false;
        }
      }
    }, true);

    F.connectPagePreviewers(
      P.e.tabs.preview.querySelector(
        '#btn-preview-refresh'
      )
    );

    const diffButtons = E('#wikiedit-tab-diff-buttons');
    diffButtons.querySelector('button.sbs').addEventListener(
      "click",(e)=>P.diff(true), false
    );
    diffButtons.querySelector('button.unified').addEventListener(
      "click",(e)=>P.diff(false), false
    );
    if(0) P.e.btnCommit.addEventListener(
      "click",(e)=>P.commit(), false
    );
    const doSave = function(alsoClose){
      const w = P.winfo;
      if(!w){
        F.error("No page loaded.");
        return;
      }
      if(alsoClose){
        P.save(()=>window.location.href=F.repoUrl('wiki',{name: w.name}));
      }else{
        P.save();
      }
    };
    const doReload = function(e){
      const w = P.winfo;
      if(!w){
        F.error("No page loaded.");
        return;
      }
      if(!w.version/* new/unsaved page */
         && w.type!=='sandbox'
         && P.wikiContent()){
        F.error("This new/unsaved page has content.",
                "To really discard this page,",
                "first clear its content",
                "then use the Discard button.");
        return;
      }
      P.unstashContent();
      if(w.version || w.type==='sandbox'){
        P.loadPage(w);
      }else{
        WikiList.removeEntry(w.name);
        delete P.winfo;
        P.updatePageTitle();
        F.message("Discarded new page ["+w.name+"].");
      }
    };

    if(P.config.useConfirmerButtons.reload){
      P.tabs.switchToTab(1/*DOM visibility workaround*/);
      F.confirmer(P.e.btnReload, {
        pinSize: true,
        confirmText: "Really reload, losing edits?",
        onconfirm: doReload,
        ticks: F.config.confirmerButtonTicks
      });
    }else{
      P.e.btnReload.addEventListener('click', doReload, false);
    }
    if(P.config.useConfirmerButtons.save){
      P.tabs.switchToTab(1/*DOM visibility workaround*/);
      F.confirmer(P.e.btnSave, {
        pinSize: true,
        confirmText: "Really save changes?",
        onconfirm: ()=>doSave(),
        ticks: F.config.confirmerButtonTicks
      });
      F.confirmer(P.e.btnSaveClose, {
        pinSize: true,
        confirmText: "Really save changes?",
        onconfirm: ()=>doSave(true),
        ticks: F.config.confirmerButtonTicks
      });
    }else{
      P.e.btnSave.addEventListener('click', ()=>doSave(), false);
      P.e.btnSaveClose.addEventListener('click', ()=>doSave(true), false);
    }

    P.e.taEditor.addEventListener('change', ()=>P.notifyOfChange(), false);
    
    P.selectMimetype(false, true);
    P.e.selectMimetype.addEventListener(
      'change',
      function(e){
        if(P.winfo && P.winfo.mimetype !== e.target.value){
          P.winfo.mimetype = e.target.value;
          P._isDirty = true;
          P.stashContentChange(true);
        }
      },
      false
    );
    
    const selectFontSize = E('select[name=editor_font_size]');
    if(selectFontSize){
      selectFontSize.addEventListener(
        "change",function(e){
          const ed = P.e.taEditor;
          ed.className = ed.className.replace(
              /\bfont-size-\d+/g, '' );
          ed.classList.add('font-size-'+e.target.value);
        }, false
      );
      selectFontSize.dispatchEvent(
        // Force UI update
        new Event('change',{target:selectFontSize})
      );
    }

    P.addEventListener(
      // Clear certain views when new content is loaded/set
      'wiki-content-replaced',
      ()=>{
        P.previewNeedsUpdate = true;
        D.clearElement(P.e.diffTarget, P.e.previewTarget);
      }
    );
    P.addEventListener(
      // Clear certain views after a save
      'wiki-saved',
      (e)=>{
        D.clearElement(P.e.diffTarget, P.e.previewTarget);
        // TODO: replace preview with new content
      }
    );
    P.addEventListener('wiki-stash-updated',function(){
      /* MUST come before WikiList.init() and P.stashWidget.init() so
         that interwoven event handlers get called in the right
         order. */
      if(P.winfo && !P.winfo.version && !$stash.getWinfo(P.winfo)){
        // New local page was removed.
        delete P.winfo;
        P.wikiContent('');
        P.updatePageTitle();
      }
      P.updateSaveButton();
    }).updatePageTitle().updateSaveButton();

    P.addEventListener(
      // Update various state on wiki page load
      'wiki-page-loaded',
      function(ev){
        delete P._isDirty;
        const winfo = ev.detail;
        P.winfo = winfo;
        P.previewNeedsUpdate = true;
        P.e.selectMimetype.value = winfo.mimetype;
        P.tabs.switchToTab(P.e.tabs.content);
        P.wikiContent(winfo.content || '');
        WikiList.e.select.value = winfo.name;
        if(!winfo.version && winfo.type!=='sandbox'){
          F.message('You are editing a new, unsaved page:',winfo.name);
        }
        P.updatePageTitle().updateSaveButton(/* b/c save() routes through here */);
      },
      false
    );
    /* These init()s need to come after P's event handlers are registered.
       The tab-switching is a workaround for the pinSize option of the confirmer widgets:
       it does not work if the confirmer button being initialized is in a hidden
       part of the DOM :/. */
    P.tabs.switchToTab(0);
    WikiList.init( P.e.tabs.pageList.firstElementChild );
    P.tabs.switchToTab(1);
    P.stashWidget.init(P.e.tabs.content.lastElementChild);
    P.tabs.switchToTab(0);
    //P.$wikiList = WikiList/*only for testing/debugging*/;
  }/*F.onPageLoad()*/);

  /**
     Returns true if fossil.page.winfo is set, indicating that a page
     has been loaded, else it reports an error and returns false.

     If passed a truthy value any error message about not having
     a wiki page loaded is suppressed.
  */
  const affirmPageLoaded = function(quiet){
    if(!P.winfo && !quiet) F.error("No wiki page is loaded.");
    return !!P.winfo;
  };

  /**
     Updates the attachments list from this.winfo.
  */
  P.updateAttachmentsView = function f(){
    if(!f.eAttach){
      f.eAttach = P.e.attachmentContainer.querySelector('div');
    }
    D.clearElement(f.eAttach);
    const wi = this.winfo;
    if(!wi){
      D.append(f.eAttach,"No page loaded.");
      return this;
    }
    else if(!wi.version){
      D.append(f.eAttach,
               "Page ["+wi.name+"] cannot have ",
               "attachments until it is saved once.");
      return this;
    }
    const btnReload = D.button("Reload list");
    const self = this;
    btnReload.addEventListener('click', function(){
      const isStashed = $stash.hasStashedContent(wi);
      F.fetch('wikiajax/attachments',{
        responseType: 'json',
        urlParams: {page: wi.name},
        onload: function(r){
          wi.attachments = r;
          if(isStashed) self.stashContentChange(true);
          F.message("Reloaded attachment list for ["+wi.name+"].");
          self.updateAttachmentsView();
        }
      });
    });
    if(!wi.attachments || !wi.attachments.length){
      D.append(f.eAttach,
               btnReload,
               " No attachments found for page ["+wi.name+"]. ",
               D.a(F.repoUrl('attachadd',{
                 page: wi.name,
                 from: F.repoUrl('wikiedit',{name: wi.name})}),
                   "Add attachments..." )
              );
      return this;
    }
    D.append(
      f.eAttach,
      D.append(D.p(),
               btnReload," ",
               D.a(F.repoUrl('attachlist',{page:wi.name}),
                   "Attachments for page ["+wi.name+"]."),
               " ",
               D.a(F.repoUrl('attachadd',{
                 page:wi.name,
                 from: F.repoUrl('wikiedit',{name: wi.name})}),
                   "Add attachments..." )
              )
    );
    wi.attachments.forEach(function(a){
      const wrap = D.div();
      D.append(f.eAttach, wrap);
      D.append(wrap,
               D.append(D.div(),
                        "Attachment ",
                        D.addClass(
                          D.a(F.repoUrl('ainfo',{name:a.uuid}),
                              F.hashDigits(a.uuid,true)),
                          'monospace'),
                        " ",
                        a.filename,
                        (a.isLatest ? " (latest)" : "")
                       )
              );
      //D.append(wrap,D.append(D.div(), "URLs:"));
      const ul = D.ul();
      D.append(wrap, ul);
      [ // List download URL variants for each attachment:
        [
          "attachdownload?page=",
          encodeURIComponent(wi.name),
          "&file=",
          encodeURIComponent(a.filename)
        ].join(''),
        "raw/"+a.src
      ].forEach(function(url){
        const imgUrl = D.append(D.addClass(D.span(), 'monospace'), url);
        const urlCopy = D.span();
        const li = D.li(ul);
        D.append(li, urlCopy, " ", imgUrl);
        F.copyButton(urlCopy, {copyFromElement: imgUrl});
      });
    });
    return this;
  };

  /** Updates the in-tab title/edit status information */
  P.updateEditStatus = function f(){
    if(!f.eLinks){
      f.eName = P.e.editStatus.querySelector('span.name');
      f.eLinks = P.e.editStatus.querySelector('span.links');
    }
    const wi = this.winfo;
    D.clearElement(f.eName, f.eLinks);
    if(!wi){
      D.append(f.eName, '(no page loaded)');
      this.updateAttachmentsView();
      return this;
    }
    D.append(f.eName,getEditMarker(wi, false),wi.name);
    this.updateAttachmentsView();
    if(!wi.version) return this;
    D.append(
      f.eLinks,
      D.a(F.repoUrl('wiki',{name:wi.name}),"viewer"),
      D.a(F.repoUrl('whistory',{name:wi.name}),'history'),
      D.a(F.repoUrl('attachlist',{page:wi.name}),"attachments"),
      D.a(F.repoUrl('attachadd',{page:wi.name,from: F.repoUrl('wikiedit',{name: wi.name})}), "attach"),
      D.a(F.repoUrl('wikiedit',{name:wi.name}),"editor permalink")
    );
    return this;
  };

  /**
     Update the page title and header based on the state of
     this.winfo. A no-op if this.winfo is not set. Returns this.
  */
  P.updatePageTitle = function f(){
    if(!f.titleElement){
      f.titleElement = document.head.querySelector('title');
    }
    const wi = P.winfo, marker = getEditMarker(wi, true),
          title = wi ? wi.name : 'no page loaded';
    f.titleElement.innerText = 'Wiki Editor: ' + marker + title;
    this.updateEditStatus();
    return this;
  };

  /**
     Change the save button depending on whether we have stuff to save
     or not.
  */
  P.updateSaveButton = function(){
    /**
    // Currently disabled, per forum feedback and platform-level
    // event-handling compatibility, but might be revisited. We now
    // use an is-dirty flag instead to prevent saving when no change
    // event has fired for the current doc.
    if(!this.winfo || !this.getStashedWinfo(this.winfo)){
      D.disable(this.e.btnSave).innerText =
        "No changes to save";
      D.disable(this.e.btnSaveClose);
    }else{
      D.enable(this.e.btnSave).innerText = "Save";
      D.enable(this.e.btnSaveClose);
    }*/
    return this;
  };

  /**
     Getter (if called with no args) or setter (if passed an arg) for
     the current file content.

     The setter form sets the content, dispatches a
     'wiki-content-replaced' event, and returns this object.
  */
  P.wikiContent = function f(){
    if(0===arguments.length){
      return f.get();
    }else{
      f.set(arguments[0] || '');
      this.dispatchEvent('wiki-content-replaced', this);
      return this;
    }
  };
  /* Default get/set impls for file content */
  P.wikiContent.get = function(){return P.e.taEditor.value};
  P.wikiContent.set = function(content){P.e.taEditor.value = content};

  /**
     For use when installing a custom editor widget. Pass it the
     getter and setter callbacks to fetch resp. set the content of the
     custom widget. They will be triggered via
     P.wikiContent(). Returns this object.
  */
  P.setContentMethods = function(getter, setter){
    this.wikiContent.get = getter;
    this.wikiContent.set = setter;
    return this;
  };

  /**
     Alerts the editor app that a "change" has happened in the editor.
     When connecting 3rd-party editor widgets to this app, it is
     necessary to call this for any "change" events the widget emits.
     Whether or not "change" means that there were "really" edits is
     irrelevant, but this app will not allow saving unless it believes
     at least one "change" has been made (by being signaled through
     this method).

     This function may perform an arbitrary amount of work, so it
     should not be called for every keypress within the editor
     widget. Calling it for "blur" events is generally sufficient, and
     calling it for each Enter keypress is generally reasonable but
     also computationally costly.
  */
  P.notifyOfChange = function(){
    P._isDirty = true;
    P.stashContentChange();
  };

  /**
     Removes the default editor widget (and any dependent elements)
     from the DOM, adds the given element in its place, removes this
     method from this object, and returns this object. This is not
     needed if the 3rd-party widget replaces or hides this app's
     editor widget (e.g. TinyMCE).
  */
  P.replaceEditorElement = function(newEditor){
    P.e.taEditor.parentNode.insertBefore(newEditor, P.e.taEditor);
    P.e.taEditor.remove();
    P.e.selectFontSizeWrap.remove();
    delete this.replaceEditorElement;
    return P;
  };

  /**
     Sets the current page's base.href to {g.zTop}/wiki.
  */
  P.baseHrefForWiki = function f(){
    this.base.tag.href = this.base.wikiUrl;
    return this;
  };

  /**
     Sets the document's base.href value to its page-load-time
     setting.
  */
  P.baseHrefRestore = function(){
    this.base.tag.href = this.base.originalHref;
  };
  

  /**
     loadPage() loads the given wiki page and updates the relevant
     UI elements to reflect the loaded state. If passed no arguments
     then it re-uses the values from the currently-loaded page, reloading
     it (emitting an error message if no file is loaded).

     Returns this object, noting that the load is async. After loading
     it triggers a 'wiki-page-loaded' event, passing it this.winfo.

     If a locally-edited copy of the given file/rev is found, that
     copy is used instead of one fetched from the server, but it is
     still treated as a load event.

     Alternate call forms:

     - no arguments: re-loads from this.winfo.

     - 1 non-string argument: assumed to be an winfo-style
     object. Must have at least the {name} property, but need not have
     other winfo state.
  */
  P.loadPage = function(name){
    if(0===arguments.length){
      /* Reload from this.winfo */
      if(!affirmPageLoaded()) return this;
      name = this.winfo.name;
    }else if(1===arguments.length && 'string' !== typeof name){
      /* Assume winfo-like object */
      const arg = arguments[0];
      name = arg.name;
    }
    const onload = (r)=>{
      this.dispatchEvent('wiki-page-loaded', r);
    };
    const stashWinfo = this.getStashedWinfo({name: name});
    if(stashWinfo){ // fake a response from the stash...
      F.message("Fetched from the local-edit storage:", stashWinfo.name);
      onload({
        name: stashWinfo.name,
        mimetype: stashWinfo.mimetype,
        type: stashWinfo.type,
        version: stashWinfo.version,
        parent: stashWinfo.parent,
        isEmpty: !!stashWinfo.isEmpty,
        content: $stash.stashedContent(stashWinfo),
        attachments: stashWinfo.attachments
      });
      this._isDirty = true/*b/c loading normally clears that flag*/;
      return this;
    }
    F.message(
      "Loading content..."
    ).fetch('wikiajax/fetch',{
      urlParams: {
        page: name
      },
      responseType: 'json',
      onload:(r)=>{
        F.message('Loaded page ['+r.name+'].');
        onload(r);
      }
    });
    return this;
  };
  
  /**
     Fetches the page preview based on the contents and settings of
     this page's input fields, and updates the UI with with the
     preview.

     Returns this object, noting that the operation is async.
  */
  P.preview = function f(switchToTab){
    if(!affirmPageLoaded()) return this;
    return this._postPreview(this.wikiContent(), function(c){
      P._previewTo(c);
      if(switchToTab) self.tabs.switchToTab(self.e.tabs.preview);
    });
  };

  /**
     Callback for use with F.connectPagePreviewers(). Gets passed
     the preview content.
  */
  P._previewTo = function(c){
    const target = this.e.previewTarget;
    D.clearElement(target);
    if('string'===typeof c) D.parseHtml(target,c);
    if(F.pikchr){
      F.pikchr.addSrcView(target.querySelectorAll('svg.pikchr'));
    }
  };

  /**
     Callback for use with F.connectPagePreviewers()
  */
  P._postPreview = function(content,callback){
    if(!affirmPageLoaded()) return this;
    if(!content){
      callback(content);
      return this;
    }
    const fd = new FormData();
    const mimetype = this.e.selectMimetype.value;
    fd.append('page', this.winfo.name);
    fd.append('mimetype',mimetype);
    fd.append('content',content || '');
    F.message(
      "Fetching preview..."
    ).fetch('wikiajax/preview',{
      payload: fd,
      onload: (r,header)=>{
        callback(r);
        F.message('Updated preview.');
        P.previewNeedsUpdate = false;
        P.dispatchEvent('wiki-preview-updated',{
          mimetype: mimetype,
          element: P.e.previewTarget
        });
      },
      onerror: (e)=>{
        F.fetch.onerror(e);
        callback("Error fetching preview: "+e);
      }
    });
    return this;
  };

  /**
     Fetches the content diff based on the contents and settings of
     this page's input fields, and updates the UI with the diff view.

     Returns this object, noting that the operation is async.
  */
  P.diff = function f(sbs){
    if(!affirmPageLoaded()) return this;
    const content = this.wikiContent(),
          self = this,
          target = this.e.diffTarget;
    const fd = new FormData();
    fd.append('page',this.winfo.name);
    fd.append('sbs', sbs ? 1 : 0);
    fd.append('content',content);
    if(this.e.selectDiffWS) fd.append('ws',this.e.selectDiffWS.value);
    F.message(
      "Fetching diff..."
    ).fetch('wikiajax/diff',{
      payload: fd,
      onload: function(c){
        D.parseHtml(D.clearElement(target), [
          "<div>Diff <code>[",
          self.winfo.name,
          "]</code> &rarr; Local Edits</div>",
          c||'No changes.'
        ].join(''));
        F.diff.setupDiffContextLoad();
        if(sbs) P.tweakSbsDiffs();
        F.message('Updated diff.');
        self.tabs.switchToTab(self.e.tabs.diff);
      }
    });
    return this;
  };

  /**
     Saves the current wiki page and re-populates the editor
     with the saved state. If passed an argument, it is
     expected to be a function, which is called only if
     saving succeeds, after all other post-save processing.
  */
  P.save = function callee(onSuccessCallback){
    if(!affirmPageLoaded()) return this;
    else if(!this._isDirty){
      F.error("There are no changes to save.");
      return this;
    }
    const content = this.wikiContent();
    const self = this;
    callee.onload = function(w){
      const oldWinfo = self.winfo;
      self.unstashContent(oldWinfo);
      self.dispatchEvent('wiki-page-loaded', w)/* will reset save buttons */;
      F.message("Saved page: ["+w.name+"].");
      if('function'===typeof onSuccessCallback){
        onSuccessCallback();
      }
    };
    const fd = new FormData(), w = P.winfo;
    fd.append('page',w.name);
    fd.append('mimetype', w.mimetype);
    fd.append('isnew', w.version ? 0 : 1);
    fd.append('content', P.wikiContent());
    F.message(
      "Saving page..."
    ).fetch('wikiajax/save',{
      payload: fd,
      responseType: 'json',
      onload: callee.onload
    });
    return this;
  };
  
  /**
     Updates P.winfo for certain state and stashes P.winfo, with the
     current content fetched via P.wikiContent().

     If passed truthy AND the stash already has stashed content for
     the current page, only the stashed winfo record is updated, else
     both the winfo and content are updated.
  */
  P.stashContentChange = function(onlyWinfo){
    if(affirmPageLoaded(true)){
      const wi = this.winfo;
      wi.mimetype = P.e.selectMimetype.value;
      if(onlyWinfo && $stash.hasStashedContent(wi)){
        $stash.updateWinfo(wi);
      }else{
        $stash.updateWinfo(wi, P.wikiContent());
      }
      F.message("Stashed changes to page ["+wi.name+"].");
      P.updatePageTitle();
      $stash.prune();
      this.previewNeedsUpdate = true;
    }
    return this;
  };

  /**
     Removes any stashed state for the current P.winfo (if set) from
     F.storage. Returns this.
  */
  P.unstashContent = function(){
    const winfo = arguments[0] || this.winfo;
    if(winfo){
      this.previewNeedsUpdate = true;
      $stash.unstash(winfo);
      //console.debug("Unstashed",winfo);
      F.message("Unstashed page ["+winfo.name+"].");
    }
    return this;
  };

  /**
     Clears all stashed file state from F.storage. Returns this.
  */
  P.clearStash = function(){
    $stash.clear();
    return this;
  };

  /**
     If stashed content for P.winfo exists, it is returned, else
     undefined is returned.
  */
  P.contentFromStash = function(){
    return affirmPageLoaded(true) ? $stash.stashedContent(this.winfo) : undefined;
  };

  /**
     If a stashed version of the given winfo object exists (same
     filename/checkin values), return it, else return undefined.
  */
  P.getStashedWinfo = function(winfo){
    return $stash.getWinfo(winfo);
  };
})(window.fossil);
Added src/fossil.pikchr.js.





































































































































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(function(F/*window.fossil object*/){
  "use strict";
  const D = F.dom, P = F.pikchr = {};

  /**
     Initializes pikchr-rendered elements with the ability to
     toggle between their SVG and source code.

     The first argument may be any of:

     - A single SVG.pikchr element.

     - A collection (with a forEach method) of such elements.

     - A CSS selector string for one or more such elements.

     - An array of such strings.

     Passing no value is equivalent to passing 'svg.pikchr'.

     For each SVG in the resulting set, this function sets up event
     handlers which allow the user to toggle the SVG between image and
     source code modes. The image will switch modes in response to
     cltr-click and, if its *parent* element has the "toggle" CSS
     class, it will also switch modes in response to single-click.

     If the parent element has the "source" CSS class, the image
     starts off with its source code visible and the image hidden,
     instead of the default of the other way around.

     Returns this object.

     Each element will only be processed once by this routine, even if
     it is passed to this function multiple times. Each processed
     element gets a "data" attribute set to it to indicate that it was
     already dealt with.

     This code expects the following structure around the SVGs, and
     will not process any which don't match this:

     <DIV.pikchr-wrapper>
       <DIV.pikchr-svg><SVG.pikchr></SVG></DIV>
       <DIV.pikchr-src>
         <PRE>pikchr source code</PRE>
         <SPAN class='hidden'><A>link to open pikchr in /pikchrshow</A></SPAN>
       </DIV>
     </DIV>
  */
  P.addSrcView = function f(svg){
    if(!f.hasOwnProperty('parentClick')){
      f.parentClick = function(ev){
        if(ev.altKey || ev.metaKey || ev.ctrlKey
           /* Every combination of special key (alt, shift, ctrl,
              meta) is handled differently everywhere. Shift is used
              by the browser, Ctrl doesn't work on an iMac, and Alt is
              intercepted by most Linux window managers to control
              window movement! So...  we just listen for *any* of them
              (except Shift) and the user will need to find one which
              works on on their environment. */
           || this.classList.contains('toggle')){
          this.classList.toggle('source');
          ev.stopPropagation();
          ev.preventDefault();
        }
      };
      /**
         Event handler for the "open in pikchrshow" links: store the
         source code for the link's pikchr in
         window.sessionStorage['pikchr-xfer'] then open
         /pikchrshow?fromSession to trigger loading of that pikchr.
      */
      f.clickPikchrShow = function(ev){
        const pId = this.dataset['pikchrid'] /* ID of the associated pikchr source code element */;
        if(!pId) return;
        const ePikchr = this.parentNode.parentNode.querySelector('#'+pId);
        if(!ePikchr) return;
        ev.stopPropagation() /* keep pikchr source view from toggling */;
        window.sessionStorage.setItem('pikchr-xfer', ePikchr.innerText);
        /*
          After returning from this function the link element will
          open [/pikchrshow?fromSession], and pikchrshow will extract
          the pikchr source code from sessionStorage['pikchr-xfer'].

          Quirks of this ^^^ design:

          We use only a single slot in sessionStorage. We could
          alternately use a key like pikchr-$pId and pass that key on
          to /pikchrshow via fromSession=pikchr-$pId, but that would
          eventually lead to stale session entries if loading of
          pikchrshow were interrupted at an untimely point. The
          down-side of _not_ doing that is that some user (or
          automation) options multiple "open in pikchrshow" links
          rapidly enough, the will open the same pikchr (the one which
          was stored in the session's slot most recently).  The
          current approach should be fine for normal human interaction
          speeds, but if it proves to be a problem we can instead use
          the above-described approach of storing each pikchr in its
          own session slot and simply accept that there may be stale
          entries at some point.
        */
      };
    };
    if(!svg) svg = 'svg.pikchr';
    if('string' === typeof svg){
      document.querySelectorAll(svg).forEach((e)=>f.call(this, e));
      return this;
    }else if(svg.forEach){
      svg.forEach((e)=>f.call(this, e));
      return this;
    }
    if(svg.dataset.pikchrProcessed){
      return this;
    }
    svg.dataset.pikchrProcessed = 1;
    const parent = svg.parentNode.parentNode /* outermost DIV.pikchr-wrapper */;
    const srcView = parent ? svg.parentNode.nextElementSibling /* DIV.pikchr-src */ : undefined;
    if(srcView && srcView.classList.contains('pikchr-src')){
      /* Without this element, there's nothing for us to do here. */
      parent.addEventListener('click', f.parentClick, false);
      const eSpan = window.sessionStorage
            ? srcView.querySelector('span') /* "open in..." link wrapper */
            : undefined;
      if(eSpan){
        const openLink = eSpan.querySelector('a');
        if(openLink){
          openLink.addEventListener('click', f.clickPikchrShow, false);
          eSpan.classList.remove('hidden');
        }
      }
    }
    return this;
  };
})(window.fossil);
Added src/fossil.popupwidget.js.























































































































































































































































































































































































































































































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(function(F/*fossil object*/){
  /**
     A very basic tooltip-like widget. It's intended to be popped up
     to display basic information or basic user interaction
     components, e.g. a copy-to-clipboard button.

     Requires: fossil.bootstrap, fossil.dom
  */
  const D = F.dom;

  /**
     Creates a new tooltip-like widget using the given options object.

     Options:

     .refresh: callback which is called just before the tooltip is
     revealed. It must refresh the contents of the tooltip, if needed,
     by applying the content to/within this.e, which is the base DOM
     element for the tooltip (and is a child of document.body). If the
     contents are static and set up via the .init option then this
     callback is not needed. When moving an already-shown tooltip,
     this is *not* called. It arguably should be, but the fact is that
     we often have to show() a popup twice in a row without hiding it
     between those calls: once to get its computed size and another to
     move it by some amount relative to that size. If the state of the
     popup depends on its position and a "double-show()" is needed
     then the client must hide() the popup between the two calls to
     show() in order to force a call to refresh() on the second
     show().

     .adjustX: an optional callback which is called when the tooltip
     is to be displayed at a given position and passed the X
     viewport-relative coordinate. This routine must either return its
     argument as-is or return an adjusted value. The intent is to
     allow a given tooltip may be positioned more appropriately for a
     given context, if needed (noting that the desired position can,
     and probably should, be passed to the show() method
     instead). This class's API assumes that clients give it
     viewport-relative coordinates, and it will take care to translate
     those to page-relative, so this callback should not do so.

     .adjustY: the Y counterpart of adjustX.

     .init: optional callback called one time to initialize the state
     of the tooltip. This is called after the this.e has been created
     and added (initially hidden) to the DOM. If this is called, it is
     removed from the object immediately after it is called.

     All callback options are called with the PopupWidget object as
     their "this".


     .cssClass: optional CSS class, or list of classes, to apply to
     the new element. In addition to any supplied here (or inherited
     from the default), the class "fossil-PopupWidget" is always set
     in order to allow certain app-internal CSS to account for popup
     windows in special cases.

     .style: optional object of properties to copy directly into
     the element's style object.     

     The options passed to this constructor get normalized into a
     separate object which includes any default values for options not
     provided by the caller. That object is available this the
     resulting PopupWidget's options property. Default values for any
     options not provided by the caller are pulled from
     PopupWidget.defaultOptions, and modifying those affects all
     future calls to this method but has no effect on existing
     instances.


     Example:

     const tip = new fossil.PopupWidget({
       init: function(){
         // optionally populate DOM element this.e with the widget's
         // content.
       },
       refresh: function(){
         // (re)populate/refresh the contents of the main
         // wrapper element, this.e.
       }
     });

     tip.show(50, 100);
     // ^^^ viewport-relative coordinates. See show() for other options.

  */
  F.PopupWidget = function f(opt){
    opt = F.mergeLastWins(f.defaultOptions,opt);
    this.options = opt;
    const e = this.e = D.addClass(D.div(), opt.cssClass,
                                  "fossil-PopupWidget");
    this.show(false);
    if(opt.style){
      let k;
      for(k in opt.style){
        if(opt.style.hasOwnProperty(k)) e.style[k] = opt.style[k];
      }
    }
    D.append(document.body, e/*must be in the DOM for size calc. to work*/);
    D.copyStyle(e, opt.style);
    if(opt.init){
      opt.init.call(this);
      delete opt.init;
    }
  };

  /**
     Default options for the PopupWidget constructor. These values are
     used for any options not provided by the caller. Any changes made
     to this instace affect future calls to PopupWidget() but have no
     effect on existing instances.
  */
  F.PopupWidget.defaultOptions = {
    cssClass: 'fossil-tooltip',
    style: undefined /*{optional properties copied as-is into element.style}*/,
    adjustX: (x)=>x,
    adjustY: (y)=>y,
    refresh: function(){},
    init: undefined /* optional initialization function */
  };

  F.PopupWidget.prototype = {

    /** Returns true if the widget is currently being shown, else false. */
    isShown: function(){return !this.e.classList.contains('hidden')},

    /** Calls the refresh() method of the options object and returns
        this object. */
    refresh: function(){
      if(this.options.refresh){
        this.options.refresh.call(this);
      }
      return this;
    },

    /**
       Shows or hides the tooltip.

       Usages:

       (bool showIt) => hide it or reveal it at its last position.

       (x, y) => reveal/move it at/to the given
       relative-to-the-viewport position, which will be adjusted to make
       it page-relative.

       (DOM element) => reveal/move it at/to a position based on the
       the given element (adjusted slightly).

       For the latter two, this.options.adjustX() and adjustY() will
       be called to adjust it further.

       Returns this object.

       If this call will reveal the element then it calls
       this.refresh() to update the UI state. If the element was
       already revealed, the call to refresh() is skipped.

       Sidebar: showing/hiding the widget is, as is conventional for
       this framework, done by removing/adding the 'hidden' CSS class
       to it, so that class must be defined appropriately.
    */
    show: function(){
      var x = undefined, y = undefined, showIt,
          wasShown = !this.e.classList.contains('hidden');
      if(2===arguments.length){
        x = arguments[0];
        y = arguments[1];
        showIt = true;
      }else if(1===arguments.length){
        if(arguments[0] instanceof HTMLElement){
          const p = arguments[0];
          const r = p.getBoundingClientRect();
          x = r.x + r.x/5;
          y = r.y - r.height/2;
          showIt = true;
        }else{
          showIt = !!arguments[0];
        }
      }
      if(showIt){
        if(!wasShown) this.refresh();
        x = this.options.adjustX.call(this,x);
        y = this.options.adjustY.call(this,y);
        x += window.pageXOffset;
        y += window.pageYOffset;
      }
      if(showIt){
        if('number'===typeof x && 'number'===typeof y){
          this.e.style.left = x+"px";
          this.e.style.top = y+"px";
        }
        D.removeClass(this.e, 'hidden');
      }else{
        D.addClass(this.e, 'hidden');
        this.e.style.removeProperty('left');
        this.e.style.removeProperty('top');
      }
      return this;
    },

    /**
       Equivalent to show(false), but may be overridden by instances,
       so long as they also call this.show(false) to perform the
       actual hiding. Overriding can be used to clean up any state so
       that the next call to refresh() (before the popup is show()n
       again) can recognize whether it needs to do something, noting
       that it's legal, and sometimes necessary, to call show()
       multiple times without needing/wanting to completely refresh
       the popup between each call (e.g. when moving the popup after
       it's been show()n).
    */
    hide: function(){return this.show(false)},

    /**
       A convenience method which adds click handlers to this popup's
       main element and document.body to hide (via hide()) the popup
       when either element is clicked or the ESC key is pressed. Only
       call this once per instance, if at all. Returns this;

       The first argument specifies whether a click handler on this
       object is installed. The second specifies whether a click
       outside of this object should close it. The third specifies
       whether an ESC handler is installed.

       Passing no arguments is equivalent to passing (true,true,true),
       and passing fewer arguments defaults the unpassed parameters to
       true.
    */
    installHideHandlers: function f(onClickSelf, onClickOther, onEsc){
      if(!arguments.length) onClickSelf = onClickOther = onEsc = true;
      else if(1===arguments.length) onClickOther = onEsc = true;
      else if(2===arguments.length) onEsc = true;
      if(onClickSelf) this.e.addEventListener('click', ()=>this.hide(), false);
      if(onClickOther) document.body.addEventListener('click', ()=>this.hide(), true);
      if(onEsc){
        const self = this;
        document.body.addEventListener('keydown', function(ev){
          if(self.isShown() && 27===ev.which) self.hide();
        }, true);
      }
      return this;
    }
  }/*F.PopupWidget.prototype*/;

  /**
     Internal impl for F.toast() and friends.

     args:

     1) CSS class to assign to the outer element, along with
     fossil-toast-message. Must be falsy for the non-warning/non-error
     case.

     2) Multiplier of F.toast.config.displayTimeMs. Should be
     1 for default case and progressively higher for warning/error
     cases.

     3) The 'arguments' object from the function which is calling
     this.

     Returns F.toast.
  */
  const toastImpl = function f(cssClass, durationMult, argsObject){
    if(!f.toaster){
      f.toaster = new F.PopupWidget({
        cssClass: 'fossil-toast-message'
      });
      D.attr(f.toaster.e, 'role', 'alert');
    }
    const T = f.toaster;
    if(f._timer) clearTimeout(f._timer);
    D.clearElement(T.e);
    if(f._prevCssClass) T.e.classList.remove(f._prevCssClass);
    if(cssClass) T.e.classList.add(cssClass);
    f._prevCssClass = cssClass;
    D.append(T.e, Array.prototype.slice.call(argsObject,0));
    T.show(F.toast.config.position.x, F.toast.config.position.y);
    f._timer = setTimeout(
      ()=>T.hide(),
      F.toast.config.displayTimeMs * durationMult
    );
    return F.toast;
  };

  F.toast = {
    config: {
      position: { x: 5, y: 5 /*viewport-relative, pixels*/ },
      displayTimeMs: 3000
    },
    /**
       Convenience wrapper around a PopupWidget which pops up a shared
       PopupWidget instance to show toast-style messages (commonly
       seen on Android). Its arguments may be anything suitable for
       passing to fossil.dom.append(), and each argument is first
       append()ed to the toast widget, then the widget is shown for
       F.toast.config.displayTimeMs milliseconds. If this is called
       while a toast is currently being displayed, the first will be
       overwritten and the time until the message is hidden will be
       reset.

       The toast is always shown at the viewport-relative coordinates
       defined by the F.toast.config.position.

       The toaster's DOM element has the CSS class fossil-tooltip
       and fossil-toast-message, so can be style via those.

       The 3 main message types (message, warning, error) each get a
       CSS class with that same name added to them. Thus CSS can
       select on .fossil-toast-message.error to style error toasts.
    */
    message: function(/*...*/){
      return toastImpl(false,1, arguments);
    },
    /**
       Displays a toast with the 'warning' CSS class assigned to it. It
       displays for 1.5 times as long as a normal toast.
    */
    warning: function(/*...*/){
      return toastImpl('warning',1.5,arguments);
    },
    /**
       Displays a toast with the 'error' CSS class assigned to it. It
       displays for twice as long as a normal toast.
    */
    error: function(/*...*/){
      return toastImpl('error',2,arguments);
    }
  }/*F.toast*/;


  F.helpButtonlets = {
    /**
       Initializes one or more "help buttonlets". It may be passed any of:

       - A string: CSS selector (multiple matches are legal)

       - A single DOM element.

       - A forEach-compatible container of DOM elements.

       - No arguments, which is equivalent to passing the string
       ".help-buttonlet:not(.processed)".

       Passing the same element(s) more than once is a no-op: during
       initialization, each elements get the class'processed' added to
       it, and any elements with that class are skipped.

       All child nodes of a help buttonlet are removed from the button
       during initialization and stashed away for use in a PopupWidget
       when the botton is clicked.

    */
    setup: function f(){
      if(!f.hasOwnProperty('clickHandler')){
        f.clickHandler = function fch(ev){
          ev.preventDefault();
          ev.stopPropagation();
          if(!fch.popup){
            fch.popup = new F.PopupWidget({
              cssClass: ['fossil-tooltip', 'help-buttonlet-content'],
              refresh: function(){
              }
            });
            fch.popup.e.style.maxWidth = '80%'/*of body*/;
            fch.popup.installHideHandlers();
          }
          D.append(D.clearElement(fch.popup.e), ev.target.$helpContent);
          /* Shift the help around a bit to "better" fit the
             screen. However, fch.popup.e.getClientRects() is empty
             until the popup is shown, so we have to show it,
             calculate the resulting size, then move and/or resize it.

             This algorithm/these heuristics can certainly be improved
             upon.
          */
          var popupRect, rectElem = ev.target;
          while(rectElem){
            popupRect = rectElem.getClientRects()[0]/*undefined if off-screen!*/;
            if(popupRect) break;
            rectElem = rectElem.parentNode;
          }
          if(!popupRect) popupRect = {x:0, y:0, left:0, right:0};
          var x = popupRect.left, y = popupRect.top;
          if(x<0) x = 0;
          if(y<0) y = 0;
          if(rectElem){
            /* Try to ensure that the popup's z-level is higher than this element's */
            const rz = window.getComputedStyle(rectElem).zIndex;
            var myZ;
            if(rz && !isNaN(+rz)){
              myZ = +rz + 1;
            }else{
              myZ = 10000/*guess!*/;
            }
            fch.popup.e.style.zIndex = myZ;
          }
          fch.popup.show(x, y);
          x = popupRect.left, y = popupRect.top;
          popupRect = fch.popup.e.getBoundingClientRect();
          const rectBody = document.body.getClientRects()[0];
          if(popupRect.right > rectBody.right){
            x -= (popupRect.right - rectBody.right);
          }
          if(x + popupRect.width > rectBody.right){
            x = rectBody.x + (rectBody.width*0.1);
            fch.popup.e.style.minWidth = '70%';
          }else{
            fch.popup.e.style.removeProperty('min-width');
            x -= popupRect.width/2;
          }
          if(x<0) x = 0;
          //console.debug("dimensions",x,y, popupRect, rectBody);
          fch.popup.show(x, y);
          return false;
        };
        f.foreachElement = function(e){
          if(e.classList.contains('processed')) return;
          e.classList.add('processed');
          e.$helpContent = [];
          /* We have to move all child nodes out of the way because we
             cannot hide TEXT nodes via CSS (which cannot select TEXT
             nodes). We have to do it in two steps to avoid invaliding
             the list during traversal. */
          e.childNodes.forEach((ch)=>e.$helpContent.push(ch));
          e.$helpContent.forEach((ch)=>ch.remove());
          e.addEventListener('click', f.clickHandler, false);
        };
      }/*static init*/
      var elems;
      if(!arguments.length){
        arguments[0] = '.help-buttonlet:not(.processed)';
        arguments.length = 1;
      }
      if(arguments.length){
        if('string'===typeof arguments[0]){
          elems = document.querySelectorAll(arguments[0]);
        }else if(arguments[0] instanceof HTMLElement){
          elems = [arguments[0]];
        }else if(arguments[0].forEach){/* assume DOM element list or array */
          elems = arguments[0];
        }
      }
      if(elems) elems.forEach(f.foreachElement);
    },
    
    /**
       Sets up the given element as a "help buttonlet", adding the CSS
       class help-buttonlet to it. Any (optional) arguments after the
       first are appended to the element using fossil.dom.append(), so
       that they become the content for the buttonlet's popup help.

       The element is then passed to this.setup() before it
       is returned from this function.
    */
    create: function(elem/*...body*/){
      D.addClass(elem, 'help-buttonlet');
      if(arguments.length>1){
        const args = Array.prototype.slice.call(arguments,1);
        D.append(elem, args);
      }
      this.setup(elem);
      return elem;
    }
  }/*helpButtonlets*/;

  F.onDOMContentLoaded( ()=>F.helpButtonlets.setup() );
  
})(window.fossil);
Added src/fossil.storage.js.





































































































































































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(function(F){
  /**
     fossil.storage is a basic wrapper around localStorage
     or sessionStorage or a dummy proxy object if neither
     of those are available.
  */
  const tryStorage = function f(obj){
    if(!f.key) f.key = 'fossil.access.check';
    try{
      obj.setItem(f.key, 'f');
      const x = obj.getItem(f.key);
      obj.removeItem(f.key);
      if(x!=='f') throw new Error(f.key+" failed")
      return obj;
    }catch(e){
      return undefined;
    }
  };

  /** Internal storage impl for fossil.storage. */
  const $storage =
        tryStorage(window.localStorage)
        || tryStorage(window.sessionStorage)
        || tryStorage({
          // A basic dummy xyzStorage stand-in
          $$$:{},
          setItem: function(k,v){this.$$$[k]=v},
          getItem: function(k){
            return this.$$$.hasOwnProperty(k) ? this.$$$[k] : undefined;
          },
          removeItem: function(k){delete this.$$$[k]},
          clear: function(){this.$$$={}}
        });

  /**
     For the dummy storage we need to differentiate between
     $storage and its real property storage for hasOwnProperty()
     to work properly...
  */
  const $storageHolder = $storage.hasOwnProperty('$$$') ? $storage.$$$ : $storage;

  /**
     A prefix which gets internally applied to all fossil.storage
     property keys so that localStorage and sessionStorage across the
     same browser profile instance do not "leak" across multiple repos
     being hosted by the same origin server. Such polination is still
     there but, with this key prefix applied, it won't be immediately
     visible via the storage API.

     With this in place we can justify using localStorage instead of
     sessionStorage again.

     One implication, it was discovered after the release of 2.12, of
     using localStorage and sessionStorage, is that their scope (the
     same "origin" and client application/profile) allows multiple
     repos on the same origin to use the same storage. Thus a user
     editing a wiki in /repoA/wikiedit could then see those edits in
     /repoB/wikiedit. The data do not cross user- or browser
     boundaries, though, so it "might" arguably be called a bug. Even
     so, it was never intended for that to happen. Rather than lose
     localStorage access altogether, storageKeyPrefix was added so
     that we can sandbox that state for the various repos.

     See: https://fossil-scm.org/forum/forumpost/4afc4d34de

     Sidebar: it might seem odd to provide a key prefix and stick all
     properties in the topmost level of the storage object. We do that
     because adding a layer of object to sandbox each repo would mean
     (de)serializing that whole tree on every storage property change
     (and we update storage often during editing sessions).
     e.g. instead of storageObject.projectName.foo we have
     storageObject[storageKeyPrefix+'foo']. That's soley for
     efficiency's sake (in terms of battery life and
     environment-internal storage-level effort). Even so, it might (or
     might not) be useful to do that someday.
  */
  const storageKeyPrefix = (
    $storageHolder===$storage/*localStorage or sessionStorage*/
      ? (
        F.config.projectCode || F.config.projectName
          || F.config.shortProjectName || window.location.pathname
      )+'::' : (
        '' /* transient storage */
      )
  );

  /**
     A proxy for localStorage or sessionStorage or a
     page-instance-local proxy, if neither one is availble.

     Which exact storage implementation is uses is unspecified, and
     apps must not rely on it.
  */
  F.storage = {
    storageKeyPrefix: storageKeyPrefix,
    /** Sets the storage key k to value v, implicitly converting
        it to a string. */
    set: (k,v)=>$storage.setItem(storageKeyPrefix+k,v),
    /** Sets storage key k to JSON.stringify(v). */
    setJSON: (k,v)=>$storage.setItem(storageKeyPrefix+k,JSON.stringify(v)),
    /** Returns the value for the given storage key, or
        dflt if the key is not found in the storage. */
    get: (k,dflt)=>$storageHolder.hasOwnProperty(
      storageKeyPrefix+k
    ) ? $storage.getItem(storageKeyPrefix+k) : dflt,
    /** Returns true if the given key has a value of "true".  If the
        key is not found, it returns true if the boolean value of dflt
        is "true". (Remember that JS persistent storage values are all
        strings.) */
    getBool: function(k,dflt){
      return 'true'===this.get(k,''+(!!dflt));
    },
    /** Returns the JSON.parse()'d value of the given
        storage key's value, or dflt is the key is not
        found or JSON.parse() fails. */
    getJSON: function f(k,dflt){
      try {
        const x = this.get(k,f);
        return x===f ? dflt : JSON.parse(x);
      }
      catch(e){return dflt}
    },
    /** Returns true if the storage contains the given key,
        else false. */
    contains: (k)=>$storageHolder.hasOwnProperty(storageKeyPrefix+k),
    /** Removes the given key from the storage. Returns this. */
    remove: function(k){
      $storage.removeItem(storageKeyPrefix+k);
      return this;
    },
    /** Clears ALL keys from the storage. Returns this. */
    clear: function(){
      this.keys().forEach((k)=>$storage.removeItem(/*w/o prefix*/k));
      return this;
    },
    /** Returns an array of all keys currently in the storage. */
    keys: ()=>Object.keys($storageHolder).filter((v)=>(v||'').startsWith(storageKeyPrefix)),
    /** Returns true if this storage is transient (only available
        until the page is reloaded), indicating that fileStorage
        and sessionStorage are unavailable. */
    isTransient: ()=>$storageHolder!==$storage,
    /** Returns a symbolic name for the current storage mechanism. */
    storageImplName: function(){
      if($storage===window.localStorage) return 'localStorage';
      else if($storage===window.sessionStorage) return 'sessionStorage';
      else return 'transient';
    },

    /**
       Returns a brief help text string for the currently-selected
       storage type.
    */
    storageHelpDescription: function(){
      return {
        localStorage: "Browser-local persistent storage with an "+
          "unspecified long-term lifetime (survives closing the browser, "+
          "but maybe not a browser upgrade).",
        sessionStorage: "Storage local to this browser tab, "+
          "lost if this tab is closed.",
        "transient": "Transient storage local to this invocation of this page."
      }[this.storageImplName()];
    }
  };

})(window.fossil);
Added src/fossil.tabs.js.



































































































































































































































































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"use strict";
(function(F/*fossil object*/){
  const E = (s)=>document.querySelector(s),
        EA = (s)=>document.querySelectorAll(s),
        D = F.dom;

  /**
     Creates a TabManager. If passed a truthy first argument, it is
     passed to init(). If passed a truthy second argument, it must be
     an Object holding configuration options:

     { 
       tabAccessKeys: boolean (=true)
          If true, tab buttons are assigned "accesskey" values
          equal to their 1-based tab number.
     }
  */
  const TabManager = function(domElem, options){
    this.e = {};
    this.options = F.mergeLastWins(TabManager.defaultOptions , options);
    if(domElem) this.init(domElem);
  };

  /**
     Default values for the options object passed to the TabManager
     constructor. Changing these affects the defaults of all
     TabManager instances instantiated after that point.
  */
  TabManager.defaultOptions = {
    tabAccessKeys: true
  };

  /**
     Internal helper to normalize a method argument to a tab
     element. arg may be a tab DOM element, a selector string, or an
     index into tabMgr.e.tabs.childNodes. Returns the corresponding
     tab element.
  */
  const tabArg = function(arg,tabMgr){
    if('string'===typeof arg) arg = E(arg);
    else if(tabMgr && 'number'===typeof arg && arg>=0){
      arg = tabMgr.e.tabs.childNodes[arg];
    }
    return arg;
  };

  /**
    Sets sets the visibility of tab element e to on or off. e MUST be
    a TabManager tab element.
  */
  const setVisible = function(e,yes){
    D[yes ? 'removeClass' : 'addClass'](e, 'hidden');
  };

  TabManager.prototype = {
    /**
       Initializes the tabs associated with the given tab container
       (DOM element or selector for a single element). This must be
       called once before using any other member functions of a given
       instance, noting that the constructor will call this if it is
       passed an argument. 

       The tab container must have an 'id' attribute. This function
       looks through the DOM for all elements which have
       data-tab-parent=thatId. For each one it creates a button to
       switch to that tab and moves the element into this.e.tabs,
       *possibly* injecting an intermediary element between
       this.e.tabs and the element.

       The label for each tab is set by the data-tab-label attribute
       of each element, defaulting to something not terribly useful.

       When it's done, it auto-selects the first tab unless a tab has
       a truthy numeric value in its data-tab-select attribute, in
       which case the last tab to have such a property is selected.

       This method must only be called once per instance. TabManagers
       may be nested but must not share any tabs instances.

       Returns this object.

       DOM elements of potential interest to users:

       this.e.container = the outermost container element.

       this.e.tabBar = the button bar. Each "button" (whether it's a
       buttor not is unspecified) has a class of .tab-button.

       this.e.tabs = the parent for all of the tab elements.

       It is legal, within reason, to manipulate these a bit, in
       particular this.e.container, e.g. by adding more children to
       it. Do not remove elements from the tabs or tabBar, however, or
       the tab state may get sorely out of sync.

       CSS classes: the container element has whatever class(es) the
       client sets on. this.e.tabBar gets the 'tab-bar' class and
       this.e.tabs gets the 'tabs' class. It's hypothetically possible
       to move the tabs to either side or the bottom using only CSS,
       but it's never been tested.
    */
    init: function(container){
      container = tabArg(container);
      const cID = container.getAttribute('id');
      if(!cID){
        throw new Error("Tab container element is missing 'id' attribute.");
      }
      const c = this.e.container = container;
      this.e.tabBar = D.addClass(D.div(),'tab-bar');
      this.e.tabs = D.addClass(D.div(),'tabs');
      D.append(c, this.e.tabBar, this.e.tabs);
      let selectIndex = 0;
      EA('[data-tab-parent='+cID+']').forEach((c,n)=>{
        if(+c.dataset.tabSelect) selectIndex=n;
        this.addTab(c);
      });
      return this.switchToTab(selectIndex);
    },

    /**
       For the given tab element, unique selector string, or integer
       (0-based tab number), returns the button associated with that
       tab, or undefined if the argument does not match any current
       tab.
    */
    getButtonForTab: function(tab){
      tab = tabArg(tab,this);
      var i = -1;
      this.e.tabs.childNodes.forEach(function(e,n){
        if(e===tab) i = n;
      });
      return i>=0 ? this.e.tabBar.childNodes[i] : undefined;
    },
    /**
       Adds the given DOM element or unique selector as the next
       tab in the tab container, adding a button to switch to
       the tab. Returns this object.

       If this object's options include a truthy tabAccessKeys then
       each tab button gets assigned an accesskey attribute equal to
       its 1-based index in the tab list. e.g. key 1 is the first tab
       and key 5 is the 5th. Whether/how that accesskey is accessed is
       dependent on the browser and its OS:

       https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/accesskey
    */
    addTab: function f(tab){
      if(!f.click){
        f.click = function(e){
         e.target.$manager.switchToTab(e.target.$tab);
        };
      }
      tab = tabArg(tab);
      tab.remove();
      D.append(this.e.tabs, D.addClass(tab,'tab-panel'));
      const tabCount = this.e.tabBar.childNodes.length+1;
      const lbl = tab.dataset.tabLabel || 'Tab #'+tabCount;
      const btn = D.addClass(D.append(D.span(), lbl), 'tab-button');
      D.append(this.e.tabBar,btn);
      btn.$manager = this;
      btn.$tab = tab;
      if(this.options.tabAccessKeys){
        D.attr(btn, 'accesskey', tabCount);
      }
      btn.addEventListener('click', f.click, false);
      return this;
    },

    /**
       Internal. Fires a new CustomEvent to all listeners which have
       registered via this.addEventListener().
     */
    _dispatchEvent: function(name, detail){
      try{
        this.e.container.dispatchEvent(
          new CustomEvent(name, {detail: detail})
        );
      }catch(e){
        /* ignore */
      }
      return this;
    },

    /**
       Registers an event listener for this object's custom events.
       The callback gets a CustomEvent object with a 'detail'
       propertly holding any tab-related state for the event. The events
       are:

       - 'before-switch-from' is emitted immediately before a new tab
       is switched away from. detail = the tab element being switched
       away from.

       - 'before-switch-to' is emitted immediately before a new tab is
       switched to.  detail = the tab element.

       - 'after-switch-to' is emitted immediately after a new tab is
       switched to.  detail = the tab element.

       Any exceptions thrown by listeners are caught and ignored, to
       avoid that they knock the tab state out of sync.

       Returns this object.
    */
    addEventListener: function(eventName, callback){
      this.e.container.addEventListener(eventName, callback, false);
      return this;
    },

    /**
       Inserts the given DOM element immediately after the tab bar.
       Intended for a status bar or similar always-visible component.
       Returns this object.
    */
    addCustomWidget: function(e){
      this.e.container.insertBefore(e, this.e.tabs);
      return this;
    },

    /**
       If the given DOM element, unique selector, or integer (0-based
       tab number) is one of this object's tabs, the UI makes that tab
       the currently-visible one, firing any relevant events. Returns
       this object. If the argument is the current tab, this is a
       no-op, and no events are fired.
    */
    switchToTab: function(tab){
      tab = tabArg(tab,this);
      const self = this;
      if(tab===this._currentTab) return this;
      else if(this._currentTab){
        this._dispatchEvent('before-switch-from', this._currentTab);
      }
      delete this._currentTab;
      this.e.tabs.childNodes.forEach((e,ndx)=>{
        const btn = this.e.tabBar.childNodes[ndx];
        if(e===tab){
          if(D.hasClass(e,'selected')){
            return;
          }
          self._dispatchEvent('before-switch-to',tab);
          setVisible(e, true);
          this._currentTab = e;
          D.addClass(btn,'selected');
          self._dispatchEvent('after-switch-to',tab);
        }else{
          if(D.hasClass(e,'selected')){
            return;
          }
          setVisible(e, false);
          D.removeClass(btn,'selected');
        }
      });
      return this;
    }
  };

  F.TabManager = TabManager;
})(window.fossil);
Added src/fossil.wikiedit-wysiwyg.js.










































































































































































































































































































































































































































































































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/**
   A slight adaptation of fossil's legacy wysiwyg wiki editor which
   makes it usable with the newer editor's edit widget replacement
   API.

   Requires: window.fossil, fossil.dom, and that the current page is
   /wikiedit. If called from another page it returns without effect.

   Caveat: this is an all-or-nothing solution. That is, once plugged
   in to /wikiedit, it cannot be removed without reloading the page.
   That is a limitation of the current editor-widget-swapping API.
*/
(function(F/*fossil object*/){
  'use strict';
  if(!F || !F.page || F.page.name!=='wikiedit') return;

  const D = F.dom;

  ////////////////////////////////////////////////////////////////////////
  // Install an app-specific stylesheet...
  (function(){
    const head = document.head || document.querySelector('head'),
          styleTag = document.createElement('style'),
          styleCSS = `
.intLink { cursor: pointer; }
img.intLink { border: 0; }
#wysiwyg-container {
  display: flex;
  flex-direction: column;
  max-width: 100% /* w/o this, toolbars don't wrap properly! */
}
#wysiwygBox {
  border: 1px solid rgba(127,127,127,0.3);
  border-radius: 0.25em;
  padding: 0.25em 1em;
  margin: 0;
  overflow: auto;
  min-height: 20em;
  resize: vertical;
}
#wysiwygEditMode { /* wrapper for radio buttons */
  border: 1px solid rgba(127,127,127,0.3);
  border-radius: 0.25em;
  padding: 0 0.35em 0 0.35em
}
#wysiwygEditMode > * {
  vertical-align: text-top;
}
#wysiwygEditMode label { cursor: pointer; }
#wysiwyg-toolbars {
  margin: 0 0 0.25em 0;
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  align-items: flex-start;
}
#wysiwyg-toolbars > * {
  margin: 0 0.5em 0.25em 0;
}
#wysiwyg-toolBar1, #wysiwyg-toolBar2 {
  margin: 0 0.2em 0.2em 0;
  display: flex;
  flex-flow: row wrap;
}
#wysiwyg-toolBar1 > * { /* formatting buttons */
  vertical-align: middle;
  margin: 0 0.25em 0.25em 0;
}
#wysiwyg-toolBar2 > * { /* icons */
  border: 1px solid rgba(127,127,127,0.3);
  vertical-align: baseline;
  margin: 0.1em;
}
`;
    head.appendChild(styleTag);
    styleTag.type = 'text/css';
    D.append(styleTag, styleCSS);
  })();

  const outerContainer = D.attr(D.div(), 'id', 'wysiwyg-container'),
        toolbars = D.attr(D.div(), 'id', 'wysiwyg-toolbars'),
        toolbar1 = D.attr(D.div(), 'id', 'wysiwyg-toolBar1'),
        // ^^^ formatting options
        toolbar2 = D.attr(D.div(), 'id', 'wysiwyg-toolBar2')
        // ^^^^ action icon buttons
  ;
  D.append(outerContainer, D.append(toolbars, toolbar1, toolbar2));

  /** Returns a function which simplifies adding a list of options
      to the given select element. See below for example usage. */
  const addOptions = function(select){
    return function ff(value, label){
      D.option(select, value, label || value);
      return ff;
    };
  };

  ////////////////////////////////////////////////////////////////////////
  // Edit mode selection (radio buttons).
  const radio0 =
        D.attr(
          D.input('radio'),
          'name','wysiwyg-mode',
          'id', 'wysiwyg-mode-0',
          'value',0,
          'checked',true),
        radio1 = D.attr(
          D.input('radio'),
          'id','wysiwyg-mode-1',
          'name','wysiwyg-mode',
          'value',1),
        radios = D.append(
          D.attr(D.span(), 'id', 'wysiwygEditMode'),
          radio0, D.append(
            D.attr(D.label(), 'for', 'wysiwyg-mode-0'),
            "WYSIWYG"
          ),
          radio1, D.append(
            D.attr(D.label(), 'for', 'wysiwyg-mode-1'),
            "Raw HTML"
          )
        );
  D.append(toolbar1, radios);
  const radioHandler = function(){setDocMode(+this.value)};
  radio0.addEventListener('change',radioHandler, false);
  radio1.addEventListener('change',radioHandler, false);


  ////////////////////////////////////////////////////////////////////////
  // Text formatting options...
  var select;
  select = D.addClass(D.select(), 'format');
  select.dataset.format = "formatblock";
  D.append(toolbar1, select);
  addOptions(select)(
    '', '- formatting -')(
    "h1", "Title 1 <h1>")(
    "h2", "Title 2 <h2>")(
    "h3", "Title 3 <h3>")(
    "h4", "Title 4 <h4>")(
    "h5", "Title 5 <h5>")(
    "h6", "Subtitle <h6>")(
    "p", "Paragraph <p>")(
    "pre", "Preformatted <pre>");

  select = D.addClass(D.select(), 'format');
  select.dataset.format = "fontname";
  D.append(toolbar1, select);
  D.addClass(
    D.option(select, '', '- font -'),
    "heading"
  );
  addOptions(select)(
    'Arial')(
    'Arial Black')(
    'Courier New')(
    'Times New Roman');

  select = D.addClass(D.select(), 'format');
  D.append(toolbar1, select);
  select.dataset.format = "fontsize";
  D.addClass(
    D.option(select, '', '- size -'),
    "heading"
  );
  addOptions(select)(
    "1", "Very small")(
    "2", "A bit small")(
    "3", "Normal")(
    "4", "Medium-large")(
    "5", "Big")(
    "6", "Very big")(
    "7", "Maximum");

  select = D.addClass(D.select(), 'format');
  D.append(toolbar1, select);
  select.dataset.format = 'forecolor';
  D.addClass(
    D.option(select, '', '- color -'),
    "heading"
  );
  addOptions(select)(
    "red", "Red")(
    "blue", "Blue")(
    "green", "Green")(
    "black", "Black")(
    "grey", "Grey")(
    "yellow", "Yellow")(
    "cyan", "Cyan")(
    "magenta", "Magenta");


  ////////////////////////////////////////////////////////////////////////
  // Icon-based toolbar...
  /**
     Inject the icons...

     mkbuiltins strips anything which looks like a C++-style comment,
     even if it's in a string literal, and thus the runs of "/"
     characters in the DOM element data attributes have been mangled
     to work around that: we simply use \x2f for every 2nd slash.
  */
  (function f(title,format,src){
    const img = D.img();
    D.append(toolbar2, img);
    D.addClass(img, 'intLink');
    D.attr(img, 'title', title);
    img.dataset.format = format;
    D.attr(img, 'src', 'string'===typeof src ? src : src.join(''));
    return f;
  })(
    'Undo', 'undo',
    ["data:image/gif;base64,R0lGODlhFgAWAOMKADljwliE33mOrpGjuYKl8aezxqPD+7",
     "/I19DV3NHa7P/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "/\x2f/\x2f/\x2f/yH5BAEKAA8ALAAAAAAWABYAAARR8MlJq704680",
     "7TkaYeJJBnES4EeUJvIGapWYAC0CsocQ7SDlWJkAkCA6ToMYWIARGQF3mRQVIEjkkSVLIbSfE",
     "whdRIH4fh/DZMICe3/C4nBQBADs="]
  )(
    'Redo','redo',
    ["data:image/gif;base64,R0lGODlhFgAWAMIHAB1ChDljwl9vj1iE34Kl8aPD+7/I1/",
     "/\x2f/yH5BAEKAAcALAAAAAAWABYAAANKeLrc/jDKSesyphi7SiEgsVXZEATDICqBVJjpqWZt9Na",
     "EDNbQK1wCQsxlYnxMAImhyDoFAElJasRRvAZVRqqQXUy7Cgx4TC6bswkAOw=="]
  )(
    "Remove formatting",
    "removeFormat",
    ["data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABYAAAAWCAYAAADEtGw7AA",
     "AABGdBTUEAALGPC/xhBQAAAAZiS0dEAP8A/wD/oL2nkwAAAAlwSFlzAAAOxAAADsQBlSsOGwA",
     "AAAd0SU1FB9oECQMCKPI8CIIAAAAIdEVYdENvbW1lbnQA9syWvwAAAuhJREFUOMtjYBgFxAB5",
     "01ZWBvVaL2nHnlmk6mXCJbF69zU+Hz/9fB5O1lx+bg45qhl8/fYr5it3XrP/YWTUvvvk3VeqG",
     "Xz70TvbJy8+Wv39+2/Hz19/mGwjZzuTYjALuoBv9jImaXHeyD3H7kU8fPj2ICML8z92dlbtMz",
     "deiG3fco7J08foH1kurkm3E9iw54YvKwuTuom+LPt/BgbWf3/\x2fsf37/1/c02cCG1lB8f/\x2ff95",
     "DZx74MTMzshhoSm6szrQ/a6Ir/Z2RkfEjBxuLYFpDiDi6Af/\x2f/2ckaHBp7+7wmavP5n76+P2C",
     "lrLIYl8H9W36auJCbCxM4szMTJac7Kza/\x2f/\x2fR3H1w2cfWAgafPbqs5g7D95++/P1B4+ECK8tA",
     "wMDw/1H7159+/7r7ZcvPz4fOHbzEwMDwx8GBgaGnNatfHZx8zqrJ+4VJBh5CQEGOySEua/v3n",
     "7hXmqI8WUGBgYGL3vVG7fuPK3i5GD9/fja7ZsMDAzMG/Ze52mZeSj4yu1XEq/ff7W5dvfVAS1",
     "lsXc4Db7z8C3r8p7Qjf/\x2f/2dnZGxlqJuyr3rPqQd/Hhyu7oSpYWScylDQsd3kzvnH738wMDzj",
     "5GBN1VIWW4c3KDon7VOvm7S3paB9u5qsU5/x5KUnlY+eexQbkLNsErK61+++VnAJcfkyMTIwf",
     "fj0QwZbJDKjcETs1Y8evyd48toz8y/ffzv/\x2fvPP4veffxpX77z6l5JewHPu8MqTDAwMDLzyrj",
     "b/mZm0JcT5Lj+89+Ybm6zz95oMh7s4XbygN3Sluq4Mj5K8iKMgP4f0/\x2f/\x2ffv77/\x2f8nLy+7MCc",
     "XmyYDAwODS9jM9tcvPypd35pne3ljdjvj26+H2dhYpuENikgfvQeXNmSl3tqepxXsqhXPyc66",
     "6s+fv1fMdKR3TK72zpix8nTc7bdfhfkEeVbC9KhbK/9iYWHiErbu6MWbY/7/\x2f8/4/\x2f9/pgOnH",
     "6jGVazvFDRtq2VgiBIZrUTIBgCk+ivHvuEKwAAAAABJRU5ErkJggg=="]
  )(
    "Bold",
    "bold",
    ["data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWAB",
     "YAQAInhI+pa+H9mJy0LhdgtrxzDG5WGFVk6aXqyk6Y9kXvKKNuLbb6zgMFADs="]
  )(
    "Italic",
    "italic",
    ["data:image/gif;base64,R0lGODlhFgAWAKEDAAAAAF9vj5WIbf/\x2f/yH5BAEAAAMALA",
     "AAAAAWABYAAAIjnI+py+0Po5x0gXvruEKHrF2BB1YiCWgbMFIYpsbyTNd2UwAAOw=="]
  )(
    "Underline",
    "underline",
    ["data:image/gif;base64,R0lGODlhFgAWAKECAAAAAF9vj/\x2f/\x2f/\x2f/\x2fyH5BAEAAAIALA",
     "AAAAAWABYAAAIrlI+py+0Po5zUgAsEzvEeL4Ea15EiJJ5PSqJmuwKBEKgxVuXWtun+DwxCCgA",
     "7"]
  )(
    "Left align",
    "justifyleft",
    ["data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWAB",
     "YAQAIghI+py+0Po5y02ouz3jL4D4JMGELkGYxo+qzl4nKyXAAAOw=="]
  )(
    "Center align",
    "justifycenter",
    ["data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWAB",
     "YAQAIfhI+py+0Po5y02ouz3jL4D4JOGI7kaZ5Bqn4sycVbAQA7"]
  )(
    "Right align",
    "justifyright",
    ["data:image/gif;base64,R0lGODlhFgAWAID/AMDAwAAAACH5BAEAAAAALAAAAAAWAB",
     "YAQAIghI+py+0Po5y02ouz3jL4D4JQGDLkGYxouqzl43JyVgAAOw=="]
  )(
    "Numbered list",
    "insertorderedlist",
    ["data:image/gif;base64,R0lGODlhFgAWAMIGAAAAADljwliE35GjuaezxtHa7P/\x2f/\x2f",
     "/\x2f/yH5BAEAAAcALAAAAAAWABYAAAM2eLrc/jDKSespwjoRFvggCBUBoTFBeq6QIAysQnRHaEO",
     "zyaZ07Lu9lUBnC0UGQU1K52s6n5oEADs="]
  )(
    "Dotted list",
    "insertunorderedlist",
    ["data:image/gif;base64,R0lGODlhFgAWAMIGAAAAAB1ChF9vj1iE33mOrqezxv/\x2f/\x2f",
     "/\x2f/yH5BAEAAAcALAAAAAAWABYAAAMyeLrc/jDKSesppNhGRlBAKIZRERBbqm6YtnbfMY7lud6",
     "4UwiuKnigGQliQuWOyKQykgAAOw=="]
  )(
    "Quote",
    "formatblock",
    ["data:image/gif;base64,R0lGODlhFgAWAIQXAC1NqjFRjkBgmT9nqUJnsk9xrFJ7u2",
     "R9qmKBt1iGzHmOrm6Sz4OXw3Odz4Cl2ZSnw6KxyqO306K63bG70bTB0rDI3bvI4P",
     "/\x2f/\x2f/\x2f/\x2f/",
     "/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "/\x2f/\x2f/\x2fyH5BAEKAB8ALAAAAAAWABYAAAVP4CeOZGmeaKqubEs2Cekk",
     "ErvEI1zZuOgYFlakECEZFi0GgTGKEBATFmJAVXweVOoKEQgABB9IQDCmrLpjETrQQlhHjINrT",
     "q/b7/i8fp8PAQA7"]
  )(
    "Delete indentation",
    "outdent",
    ["data:image/gif;base64,R0lGODlhFgAWAMIHAAAAADljwliE35GjuaezxtDV3NHa7P",
     "/\x2f/yH5BAEAAAcALAAAAAAWABYAAAM2eLrc/jDKCQG9F2i7u8agQgyK1z2EIBil+TWqEMxhMcz",
     "sYVJ3e4ahk+sFnAgtxSQDqWw6n5cEADs="]
  )(
    "Add indentation",
    "indent",
    ["data:image/gif;base64,R0lGODlhFgAWAOMIAAAAADljwl9vj1iE35GjuaezxtDV3N",
     "Ha7P/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "/\x2f/\x2f/yH5BAEAAAgALAAAAAAWABYAAAQ7EMlJq704650",
     "B/x8gemMpgugwHJNZXodKsO5oqUOgo5KhBwWESyMQsCRDHu9VOyk5TM9zSpFSr9gsJwIAOw=="
    ]
  )(
    "Hyperlink",
    "createlink",
    ["data:image/gif;base64,R0lGODlhFgAWAOMKAB1ChDRLY19vj3mOrpGjuaezxrCztb",
     "/I19Ha7Pv8/f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "/yH5BAEKAA8ALAAAAAAWABYAAARY8MlJq704682",
     "7/2BYIQVhHg9pEgVGIklyDEUBy/RlE4FQF4dCj2AQXAiJQDCWQCAEBwIioEMQBgSAFhDAGghG",
     "i9XgHAhMNoSZgJkJei33UESv2+/4vD4TAQA7"]
  )(
    "Cut",
    "cut",
    ["data:image/gif;base64,R0lGODlhFgAWAIQSAB1ChBFNsRJTySJYwjljwkxwl19vj1",
     "dusYODhl6MnHmOrpqbmpGjuaezxrCztcDCxL/I18rL1P/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/",
     "/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "yH5BAEAAB8ALAAAAAAWABYAAAVu4CeOZGmeaKqubDs6TNnE",
     "bGNApNG0kbGMi5trwcA9GArXh+FAfBAw5UexUDAQESkRsfhJPwaH4YsEGAAJGisRGAQY7UCC9",
     "ZAXBB+74LGCRxIEHwAHdWooDgGJcwpxDisQBQRjIgkDCVlfmZqbmiEAOw=="]
  )(
    "Copy",
    "copy",
    ["data:image/gif;base64,R0lGODlhFgAWAIQcAB1ChBFNsTRLYyJYwjljwl9vj1iE31",
     "iGzF6MnHWX9HOdz5GjuYCl2YKl8ZOt4qezxqK63aK/9KPD+7DI3b/I17LM/MrL1MLY9NHa7OP",
     "s++bx/Pv8/f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "/yH5BAEAAB8ALAAAAAAWABYAAAWG4CeOZGmeaKqubOum1SQ/",
     "kPVOW749BeVSus2CgrCxHptLBbOQxCSNCCaF1GUqwQbBd0JGJAyGJJiobE+LnCaDcXAaEoxhQ",
     "ACgNw0FQx9kP+wmaRgYFBQNeAoGihCAJQsCkJAKOhgXEw8BLQYciooHf5o7EA+kC40qBKkAAA",
     "Grpy+wsbKzIiEAOw=="]
  )(
    /* Paste, when activated via JS, has no effect in some (maybe all)
       environments. Activated externally, e.g. keyboard, it works. */
    "Paste (does not work in all environments)",
    "paste",
    ["data:image/gif;base64,R0lGODlhFgAWAIQUAD04KTRLY2tXQF9vj414WZWIbXmOrp",
     "qbmpGjudClFaezxsa0cb/I1+3YitHa7PrkIPHvbuPs+/fvrvv8/f/\x2f/\x2f/\x2f",
     "/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/",
     "/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f/\x2f",
     "yH5BAEAAB8ALAAAAAAWABYAAAWN4CeOZGmeaKqubGsusPvB",
     "SyFJjVDs6nJLB0khR4AkBCmfsCGBQAoCwjF5gwquVykSFbwZE+AwIBV0GhFog2EwIDchjwRiQ",
     "o9E2Fx4XD5R+B0DDAEnBXBhBhN2DgwDAQFjJYVhCQYRfgoIDGiQJAWTCQMRiwwMfgicnVcAAA",
     "MOaK+bLAOrtLUyt7i5uiUhADs="]
  );

  ////////////////////////////////////////////////////////////////////////
  // The main editor area...
  const oDoc = D.attr(D.div(), 'id', "wysiwygBox");
  D.attr(oDoc, 'contenteditable', 'true');
  D.append(outerContainer, oDoc);
  
  /* Initialize the document editor */
  function initDoc() {
    initEventHandlers();
    if (!isWysiwyg()) { setDocMode(true); }
  }

  function initEventHandlers() {
    //console.debug("initEventHandlers()");
    const handleDropDown = function() {
      formatDoc(this.dataset.format,this[this.selectedIndex].value);
      this.selectedIndex = 0;
    };
    
    const handleFormatButton = function() {
      var extra;
      switch (this.dataset.format) {
      case 'createlink':
        const sLnk = prompt('Target URL:','');
        if(sLnk) extra = sLnk;
        break;
      case 'formatblock':
        extra = 'blockquote';
        break;
      }
      formatDoc(this.dataset.format, extra);
    };

    var i, controls = outerContainer.querySelectorAll('select.format');
    for(i = 0; i < controls.length; i++) {
      controls[i].addEventListener('change', handleDropDown, false);;
    }
    controls = outerContainer.querySelectorAll('.intLink');
    for(i = 0; i < controls.length; i++) {
      controls[i].addEventListener('click', handleFormatButton, false);
    }
  }

  /* Return true if the document editor is in WYSIWYG mode.  Return
  ** false if it is in Markup mode */
  function isWysiwyg() {
    return radio0.checked;
  }

  /* Run the editing command if in WYSIWYG mode */
  function formatDoc(sCmd, sValue) {
    if (isWysiwyg()){
      try {
        // First, try the W3C draft standard way, which has
        // been working on all non-IE browsers for a while.
        // It is also supported by IE11 and higher.
        document.execCommand("styleWithCSS", false, false);
      } catch (e) {
        try {
          // For IE9 or IE10, this should work.
          document.execCommand("useCSS", 0, true);
        } catch (e) {
          // OK, that apparently did not work, do nothing.
        }
      }
      document.execCommand(sCmd, false, sValue);
      oDoc.focus();
    }
  }

  /* Change the editing mode.  Convert to markup if the argument
  ** is true and wysiwyg if the argument is false. */
  function setDocMode(bToMarkup, content) {
    if(undefined===content){
      content = bToMarkup ? oDoc.innerHTML : oDoc.innerText;
    }
    if(!setDocMode.linebreak){
      setDocMode.linebreak = new RegExp("</p><p>","ig");
    }
    if(!setDocMode.toHide){
      setDocMode.toHide = toolbars.querySelectorAll(
        '#wysiwyg-toolBar1 > *:not(#wysiwygEditMode), '
          +'#wysiwyg-toolBar2');
    }
    if (bToMarkup) {
      /* WYSIWYG -> Markup */
      // Legacy did this: content=content.replace(setDocMode.linebreak,"</p>\n\n<p>")
      D.append(D.clearElement(oDoc), content)
      oDoc.style.whiteSpace = "pre-wrap";
      D.addClass(setDocMode.toHide, 'hidden');
    } else {
      /* Markup -> WYSIWYG */
      D.parseHtml(D.clearElement(oDoc), content);
      oDoc.style.whiteSpace = "normal";
      D.removeClass(setDocMode.toHide, 'hidden');
    }
    oDoc.focus();
  }

  ////////////////////////////////////////////////////////////////////////
  // A hook which can be activated via a site skin to plug this editor
  // in to the wikiedit page.
  F.page.wysiwyg = {
    // only for debugging: oDoc: oDoc,
    /*
      Replaces wikiedit's default editor widget with this wysiwyg
      editor.

      Must either be called via an onPageLoad handler via the site
      skin's footer or else it can be called manually from the dev
      tools console. Calling it too early (e.g. in the page footer
      outside of an an onPageLoad handler) will crash because wikiedit
      has not been initialized.
    */
    init: function(){
      initDoc();
      const content = F.page.wikiContent() || '';
      var isDirty = false /* keep from stashing too often */;
      F.page.setContentMethods(
        function(){
          const rc = isWysiwyg() ? oDoc.innerHTML : oDoc.innerText;
          return rc;
        },
        function(content){
          isDirty = false;
          setDocMode(radio0.checked ? 0 : 1, content);
        }
      );
      oDoc.addEventListener('blur', function(){
        if(isDirty) F.page.notifyOfChange();
      }, false);
      oDoc.addEventListener('input', function(){isDirty = true}, false);
      F.page.wikiContent(content)/*feed it back in to our widget*/;
      F.page.replaceEditorElement(outerContainer);
      F.message("Replaced wiki editor widget with legacy wysiwyg editor.");
    }
  };
})(window.fossil);
Added src/fshell.c.


































































































































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/*
** Copyright (c) 2016 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module contains the code that implements the "fossil shell" command.
**
** The fossil shell prompts for lines of user input, then parses each line
** after the fashion of a standard Bourne shell and forks a child process
** to run the corresponding Fossil command.  This only works on Unix.
**
** The "fossil shell" command is intended for use with SEE-enabled fossil.
** It allows multiple commands to be issued without having to reenter the
** crypto phasephrase for each command.
*/
#include "config.h"
#include "fshell.h"
#include <ctype.h>

#ifndef _WIN32
# include "linenoise.h"
# include <sys/types.h>
# include <sys/wait.h>
#endif


/*
** COMMAND: shell*
**
** Usage: %fossil shell
**
** Prompt for lines of input from stdin.  Parse each line and evaluate
** it as a separate fossil command, in a child process.  The initial
** "fossil" is omitted from each line.
**
** This command only works on unix-like platforms that support fork().
** It is non-functional on Windows.
*/
void shell_cmd(void){
#ifdef _WIN32
  fossil_fatal("the 'shell' command is not supported on windows");
#else
  int nArg;
  int mxArg = 0;
  int n, i;
  char **azArg = 0;
  int fDebug;
  pid_t childPid;
  char *zLine = 0;
  char *zPrompt = 0;
  fDebug = find_option("debug", 0, 0)!=0;
  db_find_and_open_repository(OPEN_ANY_SCHEMA|OPEN_OK_NOT_FOUND, 0);
  if(g.zRepositoryName!=0){
    zPrompt = mprintf("fossil (%z)> ", db_get("project-name","unnamed"));
  }else{
    zPrompt = mprintf("fossil (no repo)> ");
  }
  db_close(0);
  sqlite3_shutdown();
  linenoiseSetMultiLine(1);
  while( (free(zLine), zLine = linenoise(zPrompt)) ){
    /* Remember shell history within the current session */
    linenoiseHistoryAdd(zLine);

    /* Parse the line of input */
    n = (int)strlen(zLine);
    for(i=0, nArg=1; i<n; i++){
      while( fossil_isspace(zLine[i]) ){ i++; }
      if( i>=n ) break;
      if( nArg>=mxArg ){
        mxArg = nArg+10;
        azArg = fossil_realloc(azArg, sizeof(char*)*mxArg);
        if( nArg==1 ) azArg[0] = g.argv[0];
      }
      if( zLine[i]=='"' || zLine[i]=='\'' ){
        char cQuote = zLine[i];
        i++;
        azArg[nArg++] = &zLine[i];
        for(i++; i<n && zLine[i]!=cQuote; i++){}
      }else{
        azArg[nArg++] = &zLine[i];
        while( i<n && !fossil_isspace(zLine[i]) ){ i++; }
      }
      zLine[i] = 0;
    }

    /* If the --debug flag was used, display the parsed arguments */
    if( fDebug ){
      for(i=1; i<nArg; i++){
        fossil_print("argv[%d] = [%s]\n", i, azArg[i]);
      }
    }

    /* Special cases */
    if( nArg<2 ) continue;
    if( fossil_strcmp(azArg[1],"exit")==0 ) break;

    /* Fork a process to handle the command */
    childPid = fork();
    if( childPid<0 ){
      printf("could not fork a child process to handle the command\n");
      fflush(stdout);
      continue;
    }
    if( childPid==0 ){
      /* This is the child process */
      int main(int, char**);
      fossil_main(nArg, azArg);
      exit(0);
    }else{
      /* The parent process */
      int status;
      waitpid(childPid, &status, 0);
    }
  }
  free(zPrompt);
#endif
}
Added src/fusefs.c.















































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module implements the userspace side of a Fuse Filesystem that
** contains all check-ins for a fossil repository.
**
** This module is a mostly a no-op unless compiled with -DFOSSIL_HAVE_FUSEFS.
** The FOSSIL_HAVE_FUSEFS should be omitted on systems that lack support for
** the Fuse Filesystem, of course.
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#ifdef FOSSIL_HAVE_FUSEFS
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include "fusefs.h"

#define FUSE_USE_VERSION 26
#include <fuse.h>

/*
** Global state information about the archive
*/
static struct sGlobal {
  /* A cache of a single check-in manifest */
  int rid;                  /* rid for the cached manifest */
  char *zSymName;           /* Symbolic name corresponding to rid */
  Manifest *pMan;           /* The cached manifest */
  /* A cache of a single file within a single check-in */
  int iFileRid;             /* Check-in ID for the cached file */
  ManifestFile *pFile;      /* Name of a cached file */
  Blob content;             /* Content of the cached file */
  /* Parsed path */
  char *az[3];              /* 0=type, 1=id, 2=path */
} fusefs;

/*
** Clear the fusefs.az[] array.
*/
static void fusefs_clear_path(void){
  int i;
  for(i=0; i<count(fusefs.az); i++){
    fossil_free(fusefs.az[i]);
    fusefs.az[i] = 0;
  }
}

/*
** Split of the input path into 0, 1, 2, or 3 elements in fusefs.az[].
** Return the number of elements.
**
** Any prior path parse is deleted.
*/
static int fusefs_parse_path(const char *zPath){
  int i, j;
  fusefs_clear_path();
  if( strcmp(zPath,"/")==0 ) return 0;
  for(i=0, j=1; i<2 && zPath[j]; i++){
    int jStart = j;
    while( zPath[j] && zPath[j]!='/' ){ j++; }
    fusefs.az[i] = mprintf("%.*s", j-jStart, &zPath[jStart]);
    if( zPath[j] ) j++;
  }
  if( zPath[j] ) fusefs.az[i++] = fossil_strdup(&zPath[j]);
  return i;
}

/*
** Reclaim memory used by the fusefs local variable.
*/
static void fusefs_reset(void){
  blob_reset(&fusefs.content);
  manifest_destroy(fusefs.pMan);
  fusefs.pMan = 0;
  fossil_free(fusefs.zSymName);
  fusefs.zSymName = 0;
  fusefs.pFile = 0;
}

/*
** Load manifest rid into the cache.
*/
static void fusefs_load_rid(int rid, const char *zSymName){
  if( fusefs.rid==rid && fusefs.pMan!=0 ) return;
  fusefs_reset();
  fusefs.zSymName = fossil_strdup(zSymName);
  fusefs.pMan = manifest_get(rid, CFTYPE_MANIFEST, 0);
  fusefs.rid = rid;
}

/*
** Locate the rid corresponding to a symbolic name
*/
static int fusefs_name_to_rid(const char *zSymName){
  if( fusefs.rid>0 && strcmp(zSymName, fusefs.zSymName)==0 ){
    return fusefs.rid;
  }else{
    return symbolic_name_to_rid(zSymName, "ci");
  }
}


/*
** Implementation of stat()
*/
static int fusefs_getattr(const char *zPath, struct stat *stbuf){
  int n, rid;
  ManifestFile *pFile;
  char *zDir;
  stbuf->st_uid = getuid();
  stbuf->st_gid = getgid();
  n = fusefs_parse_path(zPath);
  if( n==0 ){
    stbuf->st_mode = S_IFDIR | 0555;
    stbuf->st_nlink = 2;
    return 0;
  }
  if( strcmp(fusefs.az[0],"checkins")!=0 ) return -ENOENT;
  if( n==1 ){
    stbuf->st_mode = S_IFDIR | 0111;
    stbuf->st_nlink = 2;
    return 0;
  }
  rid = fusefs_name_to_rid(fusefs.az[1]);
  if( rid<=0 ) return -ENOENT;
  if( n==2 ){
    stbuf->st_mode = S_IFDIR | 0555;
    stbuf->st_nlink = 2;
    return 0;
  }
  fusefs_load_rid(rid, fusefs.az[1]);
  if( fusefs.pMan==0 ) return -ENOENT;
  stbuf->st_mtime = (fusefs.pMan->rDate - 2440587.5)*86400.0;
  pFile = manifest_file_seek(fusefs.pMan, fusefs.az[2], 0);
  if( pFile ){
    static Stmt q;
    stbuf->st_mode = S_IFREG |
              (manifest_file_mperm(pFile)==PERM_EXE ? 0555 : 0444);
    stbuf->st_nlink = 1;
    db_static_prepare(&q, "SELECT size FROM blob WHERE uuid=$uuid");
    db_bind_text(&q, "$uuid", pFile->zUuid);
    if( db_step(&q)==SQLITE_ROW ){
      stbuf->st_size = db_column_int(&q, 0);
    }
    db_reset(&q);
    return 0;
  }
  zDir = mprintf("%s/", fusefs.az[2]);
  pFile = manifest_file_seek(fusefs.pMan, zDir, 1);
  fossil_free(zDir);
  if( pFile==0 ) return -ENOENT;
  n = (int)strlen(fusefs.az[2]);
  if( strncmp(fusefs.az[2], pFile->zName, n)!=0 ) return -ENOENT;
  if( pFile->zName[n]!='/' ) return -ENOENT;
  stbuf->st_mode = S_IFDIR | 0555;
  stbuf->st_nlink = 2;
  return 0;
}

/*
** Implementation of readdir()
*/
static int fusefs_readdir(
  const char *zPath,
  void *buf,
  fuse_fill_dir_t filler,
  off_t offset,
  struct fuse_file_info *fi
){
  int n, rid;
  ManifestFile *pFile;
  const char *zPrev = "";
  int nPrev = 0;
  char *z;
  int cnt = 0;
  n = fusefs_parse_path(zPath);
  if( n==0 ){
    filler(buf, ".", NULL, 0);
    filler(buf, "..", NULL, 0);
    filler(buf, "checkins", NULL, 0);
    return 0;
  }
  if( strcmp(fusefs.az[0],"checkins")!=0 ) return -ENOENT;
  if( n==1 ) return -ENOENT;
  rid = fusefs_name_to_rid(fusefs.az[1]);
  if( rid<=0 ) return -ENOENT;
  fusefs_load_rid(rid, fusefs.az[1]);
  if( fusefs.pMan==0 ) return -ENOENT;
  filler(buf, ".", NULL, 0);
  filler(buf, "..", NULL, 0);
  manifest_file_rewind(fusefs.pMan);
  if( n==2 ){
    while( (pFile = manifest_file_next(fusefs.pMan, 0))!=0 ){
      if( nPrev>0 && strncmp(pFile->zName, zPrev, nPrev)==0
                  && pFile->zName[nPrev]=='/' ) continue;
      zPrev = pFile->zName;
      for(nPrev=0; zPrev[nPrev] && zPrev[nPrev]!='/'; nPrev++){}
      z = mprintf("%.*s", nPrev, zPrev);
      filler(buf, z, NULL, 0);
      fossil_free(z);
      cnt++;
    }
  }else{
    char *zBase = mprintf("%s/", fusefs.az[2]);
    int nBase = (int)strlen(zBase);
    while( (pFile = manifest_file_next(fusefs.pMan, 0))!=0 ){
      if( strcmp(pFile->zName, zBase)>=0 ) break;
    }
    while( pFile && strncmp(zBase, pFile->zName, nBase)==0 ){
      if( nPrev==0 || strncmp(pFile->zName+nBase, zPrev, nPrev)!=0 ){
        zPrev = pFile->zName+nBase;
        for(nPrev=0; zPrev[nPrev] && zPrev[nPrev]!='/'; nPrev++){}
        if( zPrev[nPrev]=='/' ){
          z = mprintf("%.*s", nPrev, zPrev);
          filler(buf, z, NULL, 0);
          fossil_free(z);
        }else{
          filler(buf, zPrev, NULL, 0);
          nPrev = 0;
        }
        cnt++;
      }
      pFile = manifest_file_next(fusefs.pMan, 0);
    }
    fossil_free(zBase);
  }
  return cnt>0 ? 0 : -ENOENT;
}


/*
** Implementation of read()
*/
static int fusefs_read(
  const char *zPath,
  char *buf,
  size_t size,
  off_t offset,
  struct fuse_file_info *fi
){
  int n, rid;
  n = fusefs_parse_path(zPath);
  if( n<3 ) return -ENOENT;
  if( strcmp(fusefs.az[0], "checkins")!=0 ) return -ENOENT;
  rid = fusefs_name_to_rid(fusefs.az[1]);
  if( rid<=0 ) return -ENOENT;
  fusefs_load_rid(rid, fusefs.az[1]);
  if( fusefs.pFile!=0 && strcmp(fusefs.az[2], fusefs.pFile->zName)!=0 ){
    fusefs.pFile = 0;
    blob_reset(&fusefs.content);
  }
  fusefs.pFile = manifest_file_seek(fusefs.pMan, fusefs.az[2], 0);
  if( fusefs.pFile==0 ) return -ENOENT;
  rid = uuid_to_rid(fusefs.pFile->zUuid, 0);
  blob_reset(&fusefs.content);
  content_get(rid, &fusefs.content);
  if( offset>blob_size(&fusefs.content) ) return 0;
  if( offset+size>blob_size(&fusefs.content) ){
    size = blob_size(&fusefs.content) - offset;
  }
  memcpy(buf, blob_buffer(&fusefs.content)+offset, size);
  return size;
}

static struct fuse_operations fusefs_methods = {
  .getattr = fusefs_getattr,
  .readdir = fusefs_readdir,
  .read    = fusefs_read,
};
#endif /* FOSSIL_HAVE_FUSEFS */

/*
** COMMAND: fusefs*
**
** Usage: %fossil fusefs [--debug] DIRECTORY
**
** This command uses the Fuse Filesystem (FuseFS) to mount a directory
** at DIRECTORY that contains the content of all check-ins in the
** repository.  The names of files are DIRECTORY/checkins/VERSION/PATH
** where DIRECTORY is the root of the mount, VERSION is any valid
** check-in name (examples: "trunk" or "tip" or a tag or any unique
** prefix of an artifact hash, etc) and PATH is the pathname of the file in
** the check-in.  If DIRECTORY does not exist, then an attempt is made
** to create it.
**
** The DIRECTORY/checkins directory is not searchable so one cannot
** do "ls DIRECTORY/checkins" to get a listing of all possible check-in
** names.  There are countless variations on check-in names and it is
** impractical to list them all.  But all other directories are searchable
** and so the "ls" command will work everywhere else in the fusefs
** file hierarchy.
**
** The FuseFS typically only works on Linux, and then only on Linux
** systems that have the right kernel drivers and have installed the
** appropriate support libraries.
**
** After stopping the "fossil fusefs" command, it might also be necessary
** to run "fusermount -u DIRECTORY" to reset the FuseFS before using it
** again.
*/
void fusefs_cmd(void){
#ifdef FOSSIL_HAVE_FUSEFS
  char *zMountPoint;
  char *azNewArgv[5];
  int doDebug = find_option("debug","d",0)!=0;

  db_find_and_open_repository(0,0);
  verify_all_options();
  blob_init(&fusefs.content, 0, 0);
  if( g.argc!=3 ) usage("DIRECTORY");
  zMountPoint = g.argv[2];
  if( file_mkdir(zMountPoint, ExtFILE, 0) ){
    fossil_fatal("cannot make directory [%s]", zMountPoint);
  }
  azNewArgv[0] = g.argv[0];
  azNewArgv[1] = doDebug ? "-d" : "-f";
  azNewArgv[2] = "-s";
  azNewArgv[3] = zMountPoint;
  azNewArgv[4] = 0;
  g.localOpen = 0;   /* Prevent tags like "current" and "prev" */
  fuse_main(4, azNewArgv, &fusefs_methods, NULL);
  fusefs_reset();
  fusefs_clear_path();
#else
  fprintf(stderr, "The FuseFS is not available in this build.\n");
  exit(1);
#endif /* FOSSIL_HAVE_FUSEFS */
}

/*
** Return version numbers for the FUSE header that was used at compile-time
** and/or the FUSE library that was loaded at runtime.
*/
const char *fusefs_lib_version(void){
#if defined(FOSSIL_HAVE_FUSEFS) && FUSE_MAJOR_VERSION>=3
  return fuse_pkgversion();
#else
  return "unknown";
#endif
}

const char *fusefs_inc_version(void){
#ifdef FOSSIL_HAVE_FUSEFS
  return COMPILER_STRINGIFY(FUSE_MAJOR_VERSION) "."
         COMPILER_STRINGIFY(FUSE_MINOR_VERSION);
#else
  return "unknown";
#endif
}
Added src/fuzz.c.
































































































































































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/*
** Copyright (c) 2019 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
*
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to connect Fossil to libFuzzer.  Do a web search
** for "libfuzzer" for details about that fuzzing platform.
**
** To build on linux (the only platform for which this works at
** present) first do
**
**     ./configure
**
** Then edit the Makefile as follows:
**
**   (1)  Change CC to be "clang-6.0" or some other compiler that
**        supports libFuzzer
**
**   (2)  Change APPNAME to "fossil-fuzz"
**
**   (3)  Add "-fsanitize=fuzzer" and "-DFOSSIL_FUZZ" to TCCFLAGS.  Perhaps
**        make the first change "-fsanitize=fuzzer,undefined,address" for
**        extra, but slower, testing.
**
** Then build the fuzzer using:
**
**   make clean fossil-fuzz
**
** To run the fuzzer, create a working directory ("cases"):
**
**   mkdir cases
**
** Then seed the working directory with example input files.  For example,
** if fuzzing the wiki formatter, perhaps copy *.wiki into cases.  Then
** run the fuzzer thusly:
**
**   fossil-fuzz cases
**
** The default is to fuzz the Fossil-wiki translator.  Use the --fuzztype TYPE
** option to fuzz different aspects of the system.
*/
#include "config.h"
#include "fuzz.h"

#if LOCAL_INTERFACE
/*
** Type of fuzzing:
*/
#define FUZZ_WIKI       0      /* The Fossil-Wiki formatter */
#define FUZZ_MARKDOWN   1      /* The Markdown formatter */
#define FUZZ_ARTIFACT   2      /* Fuzz the artifact parser */
#define FUZZ_WIKI2      3      /* FOSSIL_WIKI and FOSSIL_MARKDOWN */
#endif

/* The type of fuzzing to do */
static int eFuzzType = FUZZ_WIKI;

/* The fuzzer invokes this routine once for each fuzzer input
*/
int LLVMFuzzerTestOneInput(const uint8_t *aData, size_t nByte){
  Blob in, out;
  blob_init(&in, 0, 0);
  blob_append(&in, (char*)aData, (int)nByte);
  blob_zero(&out);
  switch( eFuzzType ){
    case FUZZ_WIKI: {
      wiki_convert(&in, &out, 0);
      blob_reset(&out);
      break;
    }
    case FUZZ_MARKDOWN: {
      Blob title = BLOB_INITIALIZER;
      blob_reset(&out);
      markdown_to_html(&in, &title, &out);
      blob_reset(&title);
      break;
    }
    case FUZZ_WIKI2: {
      Blob title = BLOB_INITIALIZER;
      wiki_convert(&in, &out, 0);
      blob_reset(&out);
      markdown_to_html(&in, &title, &out);
      blob_reset(&title);
      break;
    }
    case FUZZ_ARTIFACT:
      fossil_fatal("FUZZ_ARTIFACT is not implemented.");
      break;
  }
  blob_reset(&in);
  blob_reset(&out);
  return 0;
}

/*
** Check fuzzer command-line options.
*/
static void fuzzer_options(void){
  const char *zType;
  db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
  db_multi_exec("PRAGMA query_only=1;");
  zType = find_option("fuzztype",0,1);
  if( zType==0 || fossil_strcmp(zType,"wiki")==0 ){
    eFuzzType = FUZZ_WIKI;
  }else if( fossil_strcmp(zType,"markdown")==0 ){
    eFuzzType = FUZZ_MARKDOWN;
  }else if( fossil_strcmp(zType,"wiki2")==0 ){
    eFuzzType = FUZZ_WIKI2;
  }else{
    fossil_fatal("unknown fuzz type: \"%s\"", zType);
  }
}

/* Libfuzzer invokes this routine once prior to start-up to
** process command-line options.
*/
int LLVMFuzzerInitialize(int *pArgc, char ***pArgv){
  expand_args_option(*pArgc, *pArgv);
  fuzzer_options();
  *pArgc = g.argc;
  *pArgv = g.argv;
  return 0;
}

/*
** COMMAND: test-fuzz
**
** Usage: %fossil test-fuzz [-fuzztype TYPE] INPUTFILE...
**
** Run a fuzz test using INPUTFILE as the test data.  TYPE can be one of:
**
**     wiki                  Fuzz the Fossil-wiki translator
**     markdown              Fuzz the markdown translator
**     artifact              Fuzz the artifact parser
**     wiki2                 Fuzz the Fossil-wiki and markdown translator
*/
void fuzz_command(void){
  Blob in;
  int i;
  fuzzer_options();
  verify_all_options();
  for(i=2; i<g.argc; i++){
    blob_read_from_file(&in, g.argv[i], ExtFILE);
    LLVMFuzzerTestOneInput((const uint8_t*)in.aData, (size_t)in.nUsed);
    fossil_print("%s\n", g.argv[i]);
    blob_reset(&in);
  }
}
Added src/glob.c.







































































































































































































































































































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/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to pattern matching using "glob" syntax.
*/
#include "config.h"
#include "glob.h"
#include <assert.h>

/*
** Construct and return a string which is an SQL expression that will
** be TRUE if value zVal matches any of the GLOB expressions in the list
** zGlobList.  For example:
**
**    zVal:       "x"
**    zGlobList:  "*.o,*.obj"
**
**    Result:     "(x GLOB '*.o' OR x GLOB '*.obj')"
**
** Commas and whitespace are considered to be element delimters.  Each
** element of the GLOB list may optionally be enclosed in either '...' or
** "...".  This allows commas and/or whitespace to be used in the elements
** themselves.
**
** The returned string is owned by the caller, who must fossil_free()
** it.
*/
char *glob_expr(const char *zVal, const char *zGlobList){
  Blob expr;
  const char *zSep = "(";
  int nTerm = 0;
  int i;
  int cTerm;

  if( zGlobList==0 || zGlobList[0]==0 ) return fossil_strdup("0");
  blob_zero(&expr);
  while( zGlobList[0] ){
    while( fossil_isspace(zGlobList[0]) || zGlobList[0]==',' ){
      zGlobList++;  /* Skip leading commas, spaces, and newlines */
    }
    if( zGlobList[0]==0 ) break;
    if( zGlobList[0]=='\'' || zGlobList[0]=='"' ){
      cTerm = zGlobList[0];
      zGlobList++;
    }else{
      cTerm = ',';
    }
    /* Find the next delimter (or the end of the string). */
    for(i=0; zGlobList[i] && zGlobList[i]!=cTerm; i++){
      if( cTerm!=',' ) continue; /* If quoted, keep going. */
      if( fossil_isspace(zGlobList[i]) ) break; /* If space, stop. */
    }
    blob_appendf(&expr, "%s%s GLOB '%#q'", zSep, zVal, i, zGlobList);
    zSep = " OR ";
    if( cTerm!=',' && zGlobList[i] ) i++;
    zGlobList += i;
    if( zGlobList[0] ) zGlobList++;
    nTerm++;
  }
  if( nTerm ){
    blob_appendf(&expr, ")");
    return blob_str(&expr);
  }else{
    return fossil_strdup("0");
  }
}

#if INTERFACE
/*
** A Glob object holds a set of patterns read to be matched against
** a string.
*/
struct Glob {
  int nPattern;        /* Number of patterns */
  char **azPattern;    /* Array of pointers to patterns */
};
#endif /* INTERFACE */

/*
** zPatternList is a comma- or whitespace-separated list of glob patterns.
** Parse that list and use it to create a new Glob object.
**
** Elements of the glob list may be optionally enclosed in single- or
** double-quotes.  This allows commas and whitespace to be part of a
** glob pattern.
**
** Leading and trailing spaces on glob patterns are ignored unless quoted.
**
** An empty or null pattern list results in a null glob, which will
** match nothing.
*/
Glob *glob_create(const char *zPatternList){
  int nList;         /* Size of zPatternList in bytes */
  int i;             /* Loop counters */
  Glob *p;           /* The glob being created */
  char *z;           /* Copy of the pattern list */
  char delimiter;    /* '\'' or '\"' or 0 */

  if( zPatternList==0 || zPatternList[0]==0 ) return 0;
  nList = strlen(zPatternList);
  p = fossil_malloc( sizeof(*p) + nList+1 );
  memset(p, 0, sizeof(*p));
  z = (char*)&p[1];
  memcpy(z, zPatternList, nList+1);
  while( z[0] ){
    while( fossil_isspace(z[0]) || z[0]==',' ){
      z++;  /* Skip leading commas, spaces, and newlines */
    }
    if( z[0]==0 ) break;
    if( z[0]=='\'' || z[0]=='"' ){
      delimiter = z[0];
      z++;
    }else{
      delimiter = ',';
    }
    p->azPattern = fossil_realloc(p->azPattern, (p->nPattern+1)*sizeof(char*) );
    p->azPattern[p->nPattern++] = z;
    /* Find the next delimiter (or the end of the string). */
    for(i=0; z[i] && z[i]!=delimiter &&
        !(delimiter==',' && fossil_isspace(z[i])); i++){
      /* keep looking for the end of the glob pattern */
    }
    if( z[i]==0 ) break;
    z[i] = 0;
    z += i+1;
  }
  return p;
}

/*
** Return TRUE if zString matches any of the GLOB patterns in the
** string zPatternList.
**
** This is a like calling glob_create(), glob_match(), and glob_free()
** in sequence, without the overhead of creating the reusable Glob object.
** Use this for one-time matches against a comma-separated GLOB list.
*/
int glob_multi_match(const char *zPatternList, const char *zString){
  int i;               /* Loop counters */
  int n = 0;           /* Pattern counter */
  const char *z;       /* Current GLOB pattern */
  char delimiter;      /* '\'' or '\"' or 0 */
  int rc;              /* Result of comparison */
  char zPat[100];      /* Copy of just the current pattern */

  if( zPatternList==0 ) return 0;
  z = zPatternList;
  while( z[0] ){
    while( fossil_isspace(z[0]) || z[0]==',' ){
      z++;  /* Skip leading commas, spaces, and newlines */
    }
    if( z[0]==0 ) break;
    if( z[0]=='\'' || z[0]=='"' ){
      delimiter = z[0];
      z++;
    }else{
      delimiter = ',';
    }
    /* Find the next delimiter (or the end of the string). */
    for(i=0; z[i] && z[i]!=delimiter &&
        !(delimiter==',' && fossil_isspace(z[i])); i++){
      /* keep looking for the end of the glob pattern */
    }
    n++;
    if( i>sizeof(zPat)-1 ){
      char *zMPat = fossil_strndup(z, i);
      rc = sqlite3_strglob(zMPat, zString);
      fossil_free(zMPat);
    }else{
      memcpy(zPat, z, i);
      zPat[i] = 0;
      rc = sqlite3_strglob(zPat, zString);
    }
    if( rc==0 ) return n;
    if( z[i]==0 ) break;
    z += i+1;
  }
  return 0;
}

/*
** Return true (non-zero) if zString matches any of the patterns in
** the Glob.  The value returned is actually a 1-based index of the pattern
** that matched.  Return 0 if none of the patterns match zString.
**
** A NULL glob matches nothing.
*/
int glob_match(Glob *pGlob, const char *zString){
  int i;
  if( pGlob==0 ) return 0;
  for(i=0; i<pGlob->nPattern; i++){
    if( sqlite3_strglob(pGlob->azPattern[i], zString)==0 ) return i+1;
  }
  return 0;
}

/*
** Free all memory associated with the given Glob object
*/
void glob_free(Glob *pGlob){
  if( pGlob ){
    fossil_free(pGlob->azPattern);
    fossil_free(pGlob);
  }
}

/*
** Appends the given glob to the given buffer in the form of a
** JS/JSON-compatible array. It requires that pDest have been
** initialized. If pGlob is NULL or empty it emits [] (an empty
** array).
*/
void glob_render_json_to_blob(Glob *pGlob, Blob *pDest){
  int i = 0;
  blob_append(pDest, "[", 1);
  for( ; pGlob && i < pGlob->nPattern; ++i ){
    if(i){
      blob_append(pDest, ",", 1);
    }
    blob_appendf(pDest, "%!j", pGlob->azPattern[i]);
  }
  blob_append(pDest, "]", 1);
}
/*
** Functionally equivalent to glob_render_json_to_blob()
** but outputs via cgi_print().
*/
void glob_render_json_to_cgi(Glob *pGlob){
  int i = 0;
  CX("[");
  for( ; pGlob && i < pGlob->nPattern; ++i ){
    if(i){
      CX(",");
    }
    CX("%!j", pGlob->azPattern[i]);
  }
  CX("]");
}

/*
** COMMAND: test-glob
**
** Usage:  %fossil test-glob PATTERN STRING...
**
** PATTERN is a comma- and whitespace-separated list of optionally
** quoted glob patterns.  Show which of the STRINGs that follow match
** the PATTERN.
**
** If PATTERN begins with "@" the rest of the pattern is understood
** to be a setting name (such as binary-glob, crln-glob, or encoding-glob)
** and the value of that setting is used as the actually glob pattern.
**
** The output consists of two numbers and a STRING.  The first number
** is the result of glob_match() and the second is the result of
** glob_multi_match().
*/
void glob_test_cmd(void){
  Glob *pGlob;
  int i;
  char *zPattern;
  if( g.argc<4 ) usage("PATTERN STRING ...");
  zPattern = g.argv[2];
  if( zPattern[0]=='@' ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA,0);
    zPattern = db_get(zPattern+1, 0);
    if( zPattern==0 ) fossil_fatal("no such setting: %s", g.argv[2]+1);
    fossil_print("GLOB pattern: %s\n", zPattern);
  }
  fossil_print("SQL expression: %s\n", glob_expr("x", zPattern));
  pGlob = glob_create(zPattern);
  for(i=0; i<pGlob->nPattern; i++){
    fossil_print("pattern[%d] = [%s]\n", i, pGlob->azPattern[i]);
  }
  for(i=3; i<g.argc; i++){
    fossil_print("%d %d %s\n",
       glob_match(pGlob, g.argv[i]),
       glob_multi_match(zPattern, g.argv[i]),
       g.argv[i]);
  }
  glob_free(pGlob);
}
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*******************************************************************************
**
** This file contains code to compute a revision history graph.
*/
#include "config.h"
#include "graph.h"
#include <assert.h>

/* Notes:
**
** The graph is laid out in 1 or more "rails".  A "rail" is a vertical
** band in the graph in which one can place nodes or arrows connecting
** nodes.  There can be between 1 and GR_MAX_RAIL rails.  If the graph
** is too complex to be displayed in GR_MAX_RAIL rails, it is omitted.
**
** A "riser" is the thick line that comes out of the top of a node and
** goes up to the next node on the branch, or to the top of the screen.
** A "descender" is a thick line that comes out of the bottom of a node
** and proceeds down to the bottom of the page.
**
** A "merge riser" is a thin line going up out of a node to indicate a
** merge or cherrypick.  (Cherrypicks are drawn with thin dashed lines.
** Merges are drawn with thin solid lines.)  A "merge riser" might go
** stright up out of the top of a leaf node, but for non-leaves, they
** go horizontally to their assigned rail first, then up.
**
** Invoke graph_init() to create a new GraphContext object.  Then
** call graph_add_row() to add nodes, one by one, to the graph.
** Nodes must be added in display order, from top to bottom.
** Then invoke graph_render() to run the layout algorithm.  The
** layout algorithm computes which rail each nodes sit on, and
** the rails used for merge arrows.
*/

#if INTERFACE

/*
** The type of integer identifiers for rows of the graph.
**
** For a normal /timeline graph, the identifiers are never that big
** an an ordinary 32-bit int will work fine.  But for the /finfo page,
** the identifier is a combination of the BLOB.RID and the FILENAME.FNID
** values, and so it can become quite large for repos that have both many
** check-ins and many files.  For this reason, we make the identifier
** a 64-bit integer, to dramatically reduce the risk of an overflow.
*/
typedef sqlite3_int64 GraphRowId;
#define GR_MAX_PARENT 10
#define GR_MAX_RAIL   32

#define GR_MAX_RAIL   40      /* Max number of "rails" to display */

/* The graph appears vertically beside a timeline.  Each row in the
** timeline corresponds to a row in the graph.
** timeline corresponds to a row in the graph.  GraphRow.idx is 0 for
** the top-most row and increases moving down.  Hence (in the absence of
** time skew) parents have a larger index than their children.
**
** The nParent field is -1 for entires that do not participate in the graph
** but which are included just so that we can capture their background color.
*/
struct GraphRow {
  int rid;                    /* The rid for the check-in */
  int nParent;                /* Number of parents */
  int aParent[GR_MAX_PARENT]; /* Array of parents.  0 element is primary .*/
  GraphRowId rid;             /* The rid for the check-in */
  i8 nParent;                 /* Number of parents. */
  i8 nCherrypick;             /* Subset of aParent that are cherrypicks */
  i8 nNonCherrypick;          /* Number of non-cherrypick parents */
  u8 nMergeChild;             /* Number of merge children */
  GraphRowId *aParent;        /* Array of parents.  0 element is primary .*/
  char *zBranch;              /* Branch name */
  char *zBgClr;               /* Background Color */
  char zUuid[HNAME_MAX+1];    /* Check-in for file ID */

  GraphRow *pNext;            /* Next row down in the list of all rows */
  GraphRow *pPrev;            /* Previous row */
  
  int idx;                    /* Row index.  First is 1.  0 used for "none" */
  u8 isLeaf;                  /* True if no direct child nodes */

  int idx;                    /* Row index.  Top row is smallest. */
  int idxTop;                 /* Direct descendent highest up on the graph */
  GraphRow *pChild;           /* Child immediately above this node */
  u8 isDup;                   /* True if this is duplicate of a prior entry */
  int iRail;                  /* Which rail this check-in appears on. 0-based.*/
  u8 isLeaf;                  /* True if this is a leaf node */
  int aiRaiser[GR_MAX_RAIL];  /* Raisers from this node to a higher row. */
  int bDescender;             /* Raiser from bottom of graph to here. */
  u32 mergeIn;                /* Merge in from other rails */
  int mergeOut;               /* Merge out to this rail */
  int mergeUpto;              /* Draw the merge rail up to this level */

  u32 railInUse;              /* Mask of occupied rails */
  u8 isStepParent;            /* pChild is actually a step-child. The thick
                              ** arrow up to the child is dashed, not solid */
  u8 hasNormalOutMerge;       /* Is parent of at laest 1 non-cherrypick merge */
  u8 timeWarp;                /* Child is earlier in time */
  u8 bDescender;              /* True if riser from bottom of graph to here. */
  u8 selfUp;                  /* Space above this node but belonging */
  i8 iRail;                   /* Which rail this check-in appears on. 0-based.*/
  i8 mergeOut;                /* Merge out to this rail.  -1 if no merge-out */
  u8 mergeIn[GR_MAX_RAIL];    /* Merge in from non-zero rails */
  int aiRiser[GR_MAX_RAIL];   /* Risers from this node to a higher row. */
  int mergeUpto;              /* Draw the mergeOut rail up to this level */
  int cherrypickUpto;         /* Continue the mergeOut rail up to here */
  u64 mergeDown;              /* Draw merge lines up from bottom of graph */
  u64 cherrypickDown;         /* Draw cherrypick lines up from bottom */
  u64 railInUse;              /* Mask of occupied rails at this row */
};

/* Context while building a graph
*/
struct GraphContext {
  int nErr;             /* Number of errors encountered */
  int mxRail;           /* Number of rails required to render the graph */
  GraphRow *pFirst;     /* First row in the list */
  GraphRow *pLast;      /* Last row in the list */
  int nBranch;          /* Number of distinct branches */
  char **azBranch;      /* Names of the branches */
  int nErr;                  /* Number of errors encountered */
  int mxRail;                /* Number of rails required to render the graph */
  GraphRow *pFirst;          /* First row in the list.  Top row of graph. */
  GraphRow *pLast;           /* Last row in the list. Bottom row of graph. */
  int nBranch;               /* Number of distinct branches */
  char **azBranch;           /* Names of the branches */
  int nRow;                  /* Number of rows */
  int railMap[GR_MAX_RAIL];  /* Rail order mapping */
  int nHash;                 /* Number of slots in apHash[] */
  u8 hasOffsetMergeRiser;    /* Merge arrow from leaf goes up on a different
                             ** rail that the node */
  u64 mergeRail;             /* Rails used for merge lines */
  GraphRow **apHash;         /* Hash table of rows */
  GraphRow **apHash;         /* Hash table of GraphRow objects.  Key: rid */
  u8 aiRailMap[GR_MAX_RAIL]; /* Mapping of rails to actually columns */
};

#endif

/* The N-th bit */
#define BIT(N)  (((u64)1)<<(N))

/*
** Number of rows before and after a node with a riser or descender
** that goes off-screen before we can reuse that rail.
*/
#define RISER_MARGIN 4


/*
** Malloc for zeroed space.  Panic if unable to provide the
** requested space.
*/
void *safeMalloc(int nByte){
  void *p = malloc(nByte);
  void *p = fossil_malloc(nByte);
  if( p==0 ) fossil_panic("out of memory");
  memset(p, 0, nByte);
  return p;
}

/*
** Create and initialize a GraphContext
*/
GraphContext *graph_init(void){
  return (GraphContext*)safeMalloc( sizeof(GraphContext) );
}

/*
** Destroy a GraphContext;
** Clear all content from a graph
*/
void graph_free(GraphContext *p){
static void graph_clear(GraphContext *p){
  int i;
  GraphRow *pRow;
  while( p->pFirst ){
    pRow = p->pFirst;
    p->pFirst = pRow->pNext;
    free(pRow);
  }
  for(i=0; i<p->nBranch; i++) free(p->azBranch[i]);
  free(p->azBranch);
  free(p->apHash);
  memset(p, 0, sizeof(*p));
  p->nErr = 1;
}

/*
** Destroy a GraphContext;
*/
void graph_free(GraphContext *p){
  graph_clear(p);
  free(p);
}

/*
** Insert a row into the hash table.  If there is already another
** row with the same rid, overwrite the prior entry if the overwrite
** flag is set.
** Insert a row into the hash table.  pRow->rid is the key.  Keys must
** be unique.  If there is already another row with the same rid,
** overwrite the prior entry if and only if the overwrite flag is set.
*/
static void hashInsert(GraphContext *p, GraphRow *pRow, int overwrite){
  int h;
  h = pRow->rid % p->nHash;
  while( p->apHash[h] && p->apHash[h]->rid!=pRow->rid ){
    h++;
    if( h>=p->nHash ) h = 0;
  }
  if( p->apHash[h]==0 || overwrite ){
    p->apHash[h] = pRow;
  }
}

/*
** Look up the row with rid.
*/
static GraphRow *hashFind(GraphContext *p, int rid){
static GraphRow *hashFind(GraphContext *p, GraphRowId rid){
  int h = rid % p->nHash;
  while( p->apHash[h] && p->apHash[h]->rid!=rid ){
    h++;
    if( h>=p->nHash ) h = 0;
  }
  return p->apHash[h];
}

/*
** Return the canonical pointer for a given branch name.
** Multiple calls to this routine with equivalent strings
** will return the same pointer.
**
** The returned value is a pointer to a (readonly) string that
** has the useful property that strings can be checked for
** equality by comparing pointers.
**
** Note: also used for background color names.
*/
static char *persistBranchName(GraphContext *p, const char *zBranch){
  int i;
  for(i=0; i<p->nBranch; i++){
    if( strcmp(zBranch, p->azBranch[i])==0 ) return p->azBranch[i];
    if( fossil_strcmp(zBranch, p->azBranch[i])==0 ) return p->azBranch[i];
  }
  p->nBranch++;
  p->azBranch = realloc(p->azBranch, sizeof(char*)*p->nBranch);
  p->azBranch = fossil_realloc(p->azBranch, sizeof(char*)*p->nBranch);
  if( p->azBranch==0 ) fossil_panic("out of memory");
  p->azBranch[p->nBranch-1] = mprintf("%s", zBranch);
  return p->azBranch[p->nBranch-1];
}

/*
** Add a new row t the graph context.  Rows are added from top to bottom.
** Add a new row to the graph context.  Rows are added from top to bottom.
*/
int graph_add_row(
  GraphContext *p,     /* The context to which the row is added */
  int rid,             /* RID for the check-in */
  GraphRowId rid,      /* RID for the check-in */
  int nParent,         /* Number of parents */
  int nCherrypick,     /* How many of aParent[] are actually cherrypicks */
  int *aParent,        /* Array of parents */
  GraphRowId *aParent, /* Array of parents */
  const char *zBranch, /* Branch for this check-in */
  const char *zBgClr   /* Background color. NULL or "" for white. */
  const char *zBgClr,  /* Background color. NULL or "" for white. */
  const char *zUuid,   /* hash name of the object being graphed */
  int isLeaf           /* True if this row is a leaf */
){
  GraphRow *pRow;
  int nByte;
  static int nRow = 0;

  if( p->nErr ) return 0;
  nByte = sizeof(GraphRow);
  if( nParent>GR_MAX_PARENT ){ p->nErr++; return 0; }
  pRow = (GraphRow*)safeMalloc( sizeof(GraphRow) );
  if( nParent>0 ) nByte += sizeof(pRow->aParent[0])*nParent;
  pRow = (GraphRow*)safeMalloc( nByte );
  pRow->aParent = nParent>0 ? (GraphRowId*)&pRow[1] : 0;
  pRow->rid = rid;
  if( nCherrypick>=nParent ){
    nCherrypick = nParent-1; /* Safety. Should never happen. */
  }
  pRow->nParent = nParent;
  pRow->nCherrypick = nCherrypick;
  pRow->nNonCherrypick = nParent - nCherrypick;
  pRow->zBranch = persistBranchName(p, zBranch);
  if( zUuid==0 ) zUuid = "";
  sqlite3_snprintf(sizeof(pRow->zUuid), pRow->zUuid, "%s", zUuid);
  pRow->isLeaf = isLeaf;
  memset(pRow->aiRiser, -1, sizeof(pRow->aiRiser));
  if( zBgClr==0 || zBgClr[0]==0 ) zBgClr = "white";
  if( zBgClr==0 ) zBgClr = "";
  pRow->zBgClr = persistBranchName(p, zBgClr);
  memcpy(pRow->aParent, aParent, sizeof(aParent[0])*nParent);
  if( nParent>0 ) memcpy(pRow->aParent, aParent, sizeof(aParent[0])*nParent);
  if( p->pFirst==0 ){
    p->pFirst = pRow;
  }else{
    p->pLast->pNext = pRow;
  }
  p->pLast = pRow;
  p->nRow++;
  pRow->idx = p->nRow;
  pRow->idx = pRow->idxTop = ++nRow;
  return pRow->idx;
}

/*
** Return the index of a rail currently not in use for any row between
** top and bottom, inclusive.  
** top and bottom, inclusive.
*/
static int findFreeRail(
  GraphContext *p,         /* The graph context */
  int top, int btm,        /* Span of rows for which the rail is needed */
  u32 inUseMask,           /* Mask or rails already in use */
  int iNearto              /* Find rail nearest to this rail */
  int iNearto,             /* Find rail nearest to this rail */
  int bMergeRail           /* This rail will be used for a merge line */
){
  GraphRow *pRow;
  int i;
  int iBest = 0;
  int iBestDist = 9999;
  u64 inUseMask = 0;
  for(pRow=p->pFirst; pRow && pRow->idx<top; pRow=pRow->pNext){}
  while( pRow && pRow->idx<=btm ){
    inUseMask |= pRow->railInUse;
    pRow = pRow->pNext;
  }

  /* First look for a match that honors bMergeRail */
  for(i=0; i<32; i++){
    if( (inUseMask & (1<<i))==0 ){
  for(i=0; i<=p->mxRail; i++){
    u64 m = BIT(i);
    int dist;
    if( inUseMask & m ) continue;
    if( (bMergeRail!=0) != ((p->mergeRail & m)!=0) ) continue;
    if( iNearto<=0 ){
      iBest = i;
      iBestDist = 1;
      break;
    }
    dist = i - iNearto;
    if( dist<0 ) dist = -dist;
    if( dist<iBestDist ){
      iBestDist = dist;
      iBest = i;
    }
  }

  /* If no match, consider all possible rails */
  if( iBestDist>1000 ){
    for(i=0; i<=p->mxRail+1; i++){
      int dist;
      if( inUseMask & BIT(i) ) continue;
      if( iNearto<=0 ){
        return i;
        iBest = i;
        iBestDist = 1;
        break;
      }
      dist = i - iNearto;
      if( dist<0 ) dist = -dist;
      if( dist<iBestDist ){
        iBestDist = dist;
        iBest = i;
      }
    }
  }
  if( iBestDist>1000 ) p->nErr++;
  if( iBest>p->mxRail ) p->mxRail = iBest;
  if( bMergeRail ) p->mergeRail |= BIT(iBest);
  return iBest;
}

/*
** Assign all children of node pBottom to the same rail as pBottom.
*/
static void assignChildrenToRail(GraphRow *pBottom, u32 tmFlags){
  int iRail = pBottom->iRail;
  GraphRow *pCurrent;
  GraphRow *pPrior;
  u64 mask = ((u64)1)<<iRail;

  pBottom->railInUse |= mask;
  pPrior = pBottom;
  for(pCurrent=pBottom->pChild; pCurrent; pCurrent=pCurrent->pChild){
    assert( pPrior->idx > pCurrent->idx );
    assert( pCurrent->iRail<0 );
    if( pPrior->timeWarp ) break;
    pCurrent->iRail = iRail;
    pCurrent->railInUse |= mask;
    pPrior->aiRiser[iRail] = pCurrent->idx;
    while( pPrior->idx > pCurrent->idx ){
      pPrior->railInUse |= mask;
      pPrior = pPrior->pPrev;
      assert( pPrior!=0 );
    }
  }
  /* Mask of additional rows for the riser to infinity */
  if( !pPrior->isLeaf && (tmFlags & TIMELINE_DISJOINT)==0 ){
    int n = RISER_MARGIN;
    GraphRow *p;
    pPrior->selfUp = 0;
    for(p=pPrior; p && (n--)>0; p=p->pPrev){
      pPrior->selfUp++;
      p->railInUse |= mask;
    }
  }
}


/*
** Check to see if rail iRail is clear from pBottom up to and including
** pTop.
*/
static int railIsClear(GraphRow *pBottom, int iTop, int iRail){
  u64 m = BIT(iRail);
  while( pBottom && pBottom->idx>=iTop ){
    if( pBottom->railInUse & m ) return 0;
    pBottom = pBottom->pPrev;
  }
  return 1;
}

/*
** Create a merge-arrow riser going from pParent up to pChild.
*/
static void createMergeRiser(
  GraphContext *p,
  GraphRow *pParent,    /* Lower node from which the merge line begins */
  GraphRow *pChild,     /* Upper node at which the merge line ends */
  int isCherrypick      /* True for a cherry-pick merge */
){
  int u;
  u64 mask;
  GraphRow *pLoop;

  if( pParent->mergeOut<0 ){
    u = pParent->aiRiser[pParent->iRail];
    if( u<0 && railIsClear(pParent->pPrev, pChild->idx, pParent->iRail) ){
      /* pParent is a leaf and the merge-line can be drawn straight up.*/
      pParent->mergeOut = pParent->iRail;
      mask = BIT(pParent->iRail);
      for(pLoop=pChild->pNext; pLoop && pLoop->rid!=pParent->rid;
           pLoop=pLoop->pNext){
        pLoop->railInUse |= mask;
      }
    }else if( u>0 && u<pChild->idx ){
      /* The thick arrow up to the next primary child of pDesc goes
      ** further up than the thin merge arrow riser, so draw them both
      ** on the same rail. */
      pParent->mergeOut = pParent->iRail;
    }else if( pParent->idx - pChild->idx < pParent->selfUp ){
      pParent->mergeOut = pParent->iRail;
    }else{
      /* The thin merge arrow riser is taller than the thick primary
      ** child riser, so use separate rails. */
      int iTarget = pParent->iRail;
      if( u<0 ) p->hasOffsetMergeRiser = 1;
      pParent->mergeOut = findFreeRail(p, pChild->idx, pParent->idx-1,
                                       iTarget, 1);
      mask = BIT(pParent->mergeOut);
      for(pLoop=pChild->pNext; pLoop && pLoop->rid!=pParent->rid;
           pLoop=pLoop->pNext){
        pLoop->railInUse |= mask;
      }
    }
  }
  if( isCherrypick ){
    if( pParent->cherrypickUpto==0 || pParent->cherrypickUpto > pChild->idx ){
      pParent->cherrypickUpto = pChild->idx;
    }
  }else{
    pParent->hasNormalOutMerge = 1;
    if( pParent->mergeUpto==0 || pParent->mergeUpto > pChild->idx ){
      pParent->mergeUpto = pChild->idx;
    }
  }
  pChild->mergeIn[pParent->mergeOut] = isCherrypick ? 2 : 1;
}

/*
** Compute the maximum rail number.
*/
static void find_max_rail(GraphContext *p){
  GraphRow *pRow;
  p->mxRail = 0;
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->iRail>p->mxRail ) p->mxRail = pRow->iRail;
    if( pRow->mergeOut>p->mxRail ) p->mxRail = pRow->mergeOut;
    while( p->mxRail<GR_MAX_RAIL
        && (pRow->mergeDown|pRow->cherrypickDown)>(BIT(p->mxRail+1)-1)
    ){
      p->mxRail++;
    }
  }
}

/*
** Draw a riser from pRow upward to indicate that it is going
** to a node that is off the graph to the top.
*/
static void riser_to_top(GraphRow *pRow){
  u64 mask = BIT(pRow->iRail);
  int n = RISER_MARGIN;
  pRow->aiRiser[pRow->iRail] = 0;
  while( pRow && (n--)>0 ){
    pRow->railInUse |= mask;
    pRow = pRow->pPrev;
  }
}

/*
** Compute the complete graph
**
** When primary or merge parents are off-screen, normally a line is drawn
** from the node down to the bottom of the graph.  This line is called a
** "descender".  But if the omitDescenders flag is true, then lines down
** to the bottom of the screen are omitted.
**
** The tmFlags parameter is zero or more of the TIMELINE_* constants.
** Only the following are honored:
**
**       TIMELINE_DISJOINT:    Omit descenders
**       TIMELINE_FILLGAPS:    Use step-children
**       TIMELINE_XMERGE:      Omit off-graph merge lines
*/
void graph_finish(GraphContext *p, int omitDescenders){
  GraphRow *pRow, *pDesc, *pDup, *pLoop;
  int i;
  u32 mask;
void graph_finish(GraphContext *p, const char *zLeftBranch, u32 tmFlags){
  GraphRow *pRow, *pDesc, *pDup, *pLoop, *pParent;
  int i, j;
  u64 mask;
  u32 inUse;
  int hasDup = 0;    /* True if one or more isDup entries */
  int hasDup = 0;      /* True if one or more isDup entries */
  const char *zTrunk;
  u8 *aMap;            /* Copy of p->aiRailMap */
  int omitDescenders = (tmFlags & TIMELINE_DISJOINT)!=0;
  int nTimewarp = 0;
  int riserMargin = (tmFlags & TIMELINE_DISJOINT) ? 0 : RISER_MARGIN;

  /* If mergeRiserFrom[X]==Y that means rail X holds a merge riser
  ** coming up from the bottom of the graph from off-screen check-in Y
  ** where Y is the RID.  There is no riser on rail X if mergeRiserFrom[X]==0.
  */
  GraphRowId mergeRiserFrom[GR_MAX_RAIL];

  if( p==0 || p->pFirst==0 || p->nErr ) return;
  p->nErr = 1;   /* Assume an error until proven otherwise */

  /* Initialize all rows */
  p->nHash = p->nRow*2 + 1;
  p->apHash = safeMalloc( sizeof(p->apHash[0])*p->nHash );
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->pNext ) pRow->pNext->pPrev = pRow;
    pRow->iRail = -1;
    pRow->mergeOut = -1;
    if( (pDup = hashFind(p, pRow->rid))!=0 ){
      hasDup = 1;
      pDup->isDup = 1;
    }
    hashInsert(p, pRow, 1);
  }
  p->mxRail = -1;
  memset(mergeRiserFrom, 0, sizeof(mergeRiserFrom));

  /* Purge merge-parents that are out-of-graph
  /* Purge merge-parents that are out-of-graph if descenders are not
  ** drawn.
  **
  ** Each node has one primary parent and zero or more "merge" parents.
  ** A merge parent is a prior check-in from which changes were merged into
  ** the current check-in.  If a merge parent is not in the visible section
  ** of this graph, then no arrows will be drawn for it, so remove it from
  ** the aParent[] array.
  */
  if( (tmFlags & (TIMELINE_DISJOINT|TIMELINE_XMERGE))!=0 ){
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      for(i=1; i<pRow->nParent; i++){
        GraphRow *pParent = hashFind(p, pRow->aParent[i]);
        if( pParent==0 ){
          memmove(pRow->aParent+i, pRow->aParent+i+1,
                  sizeof(pRow->aParent[0])*(pRow->nParent-i-1));
          pRow->nParent--;
          if( i<pRow->nNonCherrypick ){
            pRow->nNonCherrypick--;
          }else{
            pRow->nCherrypick--;
          }
          i--;
        }
      }
    }
  }

  /* Put the deepest (earliest) merge parent first in the list.
  ** An off-screen merge parent is considered deepest.
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext ){
    if( pRow->nParent<=1 ) continue;
    for(i=1; i<pRow->nParent; i++){
      GraphRow *pParent = hashFind(p, pRow->aParent[i]);
      if( pParent ) pParent->nMergeChild++;
    }
    if( pRow->nCherrypick>1 ){
      int iBest = -1;
      int iDeepest = -1;
      for(i=pRow->nNonCherrypick; i<pRow->nParent; i++){
        GraphRow *pParent = hashFind(p, pRow->aParent[i]);
        if( pParent==0 ){
          iBest = i;
          break;
        }
        if( pParent->idx>iDeepest ){
          iDeepest = pParent->idx;
          iBest = i;
        }
      }
      i = pRow->nNonCherrypick;
      if( iBest>i ){
        GraphRowId x = pRow->aParent[i];
        pRow->aParent[i] = pRow->aParent[iBest];
        pRow->aParent[iBest] = x;
      }
    }
    if( pRow->nNonCherrypick>2 ){
      int iBest = -1;
      int iDeepest = -1;
      for(i=1; i<pRow->nNonCherrypick; i++){
        GraphRow *pParent = hashFind(p, pRow->aParent[i]);
        if( pParent==0 ){
          iBest = i;
          break;
        }
        if( pParent->idx>iDeepest ){
          iDeepest = pParent->idx;
          iBest = i;
        }
      }
      if( iBest>1 ){
        GraphRowId x = pRow->aParent[1];
        pRow->aParent[1] = pRow->aParent[iBest];
        pRow->aParent[iBest] = x;
      }
    }
  }

  /* If the primary parent is in a different branch, but there are
  ** other parents in the same branch, reorder the parents to make
  ** the parent from the same branch the primary parent.
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->isDup ) continue;
    if( pRow->nNonCherrypick<2 ) continue;      /* Not a fork */
    pParent = hashFind(p, pRow->aParent[0]);
    if( pParent==0 ) continue;                         /* Parent off-screen */
    if( pParent->zBranch==pRow->zBranch ) continue;    /* Same branch */
    for(i=1; i<pRow->nNonCherrypick; i++){
      pParent = hashFind(p, pRow->aParent[i]);
      if( pParent && pParent->zBranch==pRow->zBranch ){
        GraphRowId t = pRow->aParent[0];
        pRow->aParent[0] = pRow->aParent[i];
        pRow->aParent[i] = t;
        break;
      }
    }
  }


  /* Find the pChild pointer for each node.
  **
  ** The pChild points to the node directly above on the same rail.
  ** The pChild must be in the same branch.  Leaf nodes have a NULL
  ** pChild.
  **
  ** In the case of a fork, choose the pChild that results in the
  ** longest rail.
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->isDup ) continue;
    if( pRow->nParent<=0 ) continue;                   /* Root node */
    pParent = hashFind(p, pRow->aParent[0]);
    if( pParent==0 ) continue;                         /* Parent off-screen */
    if( pParent->zBranch!=pRow->zBranch ) continue;    /* Different branch */
    if( pParent->idx <= pRow->idx ){
      pParent->timeWarp = 1;
      nTimewarp++;
    }else if( pRow->idxTop < pParent->idxTop ){
      pParent->pChild = pRow;
      pParent->idxTop = pRow->idxTop;
    }
  }

  if( tmFlags & TIMELINE_FILLGAPS ){
    /* If a node has no pChild in the graph
    ** and there is a node higher up in the graph
    ** that is in the same branch and has no in-graph parent, then
    ** make the lower node a step-child of the upper node.  This will
    ** be represented on the graph by a thick dotted line without an arrowhead.
    */
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      if( pRow->pChild ) continue;
      if( pRow->isLeaf ) continue;
      for(pLoop=pRow->pPrev; pLoop; pLoop=pLoop->pPrev){
        if( pLoop->nParent>0
         && pLoop->zBranch==pRow->zBranch
         && hashFind(p,pLoop->aParent[0])==0
        ){
          pRow->pChild = pLoop;
          pRow->isStepParent = 1;
          pLoop->aParent[0] = pRow->rid;
          break;
        }
      }
    }
  }

  /* Set the idxTop values for all entries.  The idxTop value is the
  ** "idx" value for the top entry in its stack of children.
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    for(i=1; i<pRow->nParent; i++){
      if( hashFind(p, pRow->aParent[i])==0 ){
        pRow->aParent[i] = pRow->aParent[--pRow->nParent];
        i--;
      }
    }
  }

  /* Figure out which nodes have no direct children (children on
  ** the same rail).  Mark such nodes as isLeaf.
  */
  memset(p->apHash, 0, sizeof(p->apHash[0])*p->nHash);
  for(pRow=p->pLast; pRow; pRow=pRow->pPrev) pRow->isLeaf = 1;
  for(pRow=p->pLast; pRow; pRow=pRow->pPrev){
    GraphRow *pParent;
    GraphRow *pChild = pRow->pChild;
    hashInsert(p, pRow, 0);
    if( !pRow->isDup
     && pRow->nParent>0 
    if( pChild && pRow->idxTop>pChild->idxTop ){
     && (pParent = hashFind(p, pRow->aParent[0]))!=0
     && pRow->zBranch==pParent->zBranch
      pRow->idxTop = pChild->idxTop;
    ){
      pParent->isLeaf = 0;
    }
  }

  /* Identify rows where the primary parent is off screen.  Assign
  ** each to a rail and draw descenders to the bottom of the screen.
  ** each to a rail and draw descenders downward.
  **
  ** Strive to put the "trunk" branch on far left.
  */
  zTrunk = persistBranchName(p, "trunk");
  for(i=0; i<2; i++){
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    for(pRow=p->pLast; pRow; pRow=pRow->pPrev){
      if( i==0 ){
        if( pRow->zBranch!=zTrunk ) continue;
      if( i==0 && pRow->zBranch!=zTrunk ) continue;
      }else {
        if( pRow->iRail>=0 ) continue;
      if( pRow->iRail>=0 ) continue;
      }
      if( pRow->isDup ) continue;
      if( pRow->nParent<0 ) continue;
      if( pRow->nParent==0 || hashFind(p,pRow->aParent[0])==0 ){
        if( omitDescenders ){
          pRow->iRail = findFreeRail(p, pRow->idx, pRow->idx, 0, 0);
        pRow->iRail = findFreeRail(p, pRow->idxTop, pRow->idx+riserMargin,0,0);
        }else{
          pRow->iRail = ++p->mxRail;
        if( p->mxRail>=GR_MAX_RAIL ) return;
        }
        mask = 1<<(pRow->iRail);
        if( omitDescenders ){
        mask = BIT(pRow->iRail);
        if( !omitDescenders ){
          pRow->railInUse |= mask;
          if( pRow->pNext ) pRow->pNext->railInUse |= mask;
        }else{
          int n = RISER_MARGIN;
          pRow->bDescender = pRow->nParent>0;
          for(pDesc=pRow; pDesc; pDesc=pDesc->pNext){
            pDesc->railInUse |= mask;
          for(pLoop=pRow; pLoop && (n--)>0; pLoop=pLoop->pNext){
            pLoop->railInUse |= mask;
          }
        }
        assignChildrenToRail(pRow, tmFlags);
      }
    }
  }

  /* Assign rails to all rows that are still unassigned.
  ** The first primary child of a row goes on the same rail as
  ** that row.
  */
  inUse = (1<<(p->mxRail+1))-1;
  for(pRow=p->pLast; pRow; pRow=pRow->pPrev){
    int parentRid;
    if( pRow->iRail>=0 ) continue;
    if( pRow->isDup ){
    GraphRowId parentRid;

    if( pRow->iRail>=0 ){
      if( pRow->pChild==0 && !pRow->timeWarp ){
        if( !omitDescenders && count_nonbranch_children(pRow->rid)!=0 ){
          riser_to_top(pRow);
        }
      }
      continue;
    }
    if( pRow->isDup || pRow->nParent<0 ){
      pRow->iRail = findFreeRail(p, pRow->idx, pRow->idx, inUse, 0);
      pDesc = pRow;
      continue;
    }else{
      assert( pRow->nParent>0 );
      parentRid = pRow->aParent[0];
      pDesc = hashFind(p, parentRid);
      if( pDesc==0 ){
      pParent = hashFind(p, parentRid);
      if( pParent==0 ){
        /* Time skew */
        pRow->iRail = ++p->mxRail;
        if( p->mxRail>=GR_MAX_RAIL ) return;
        pRow->railInUse = 1<<pRow->iRail;
        pRow->railInUse = BIT(pRow->iRail);
        continue;
      }
      if( pDesc->aiRaiser[pDesc->iRail]==0 && pDesc->zBranch==pRow->zBranch ){
        pRow->iRail = pDesc->iRail;
      if( pParent->idx>pRow->idx ){
        /* Common case:  Child occurs after parent and is above the
        ** parent in the timeline */
        pRow->iRail = findFreeRail(p, pRow->idxTop, pParent->idx,
                                   pParent->iRail, 0);
        if( p->mxRail>=GR_MAX_RAIL ) return;
        pParent->aiRiser[pRow->iRail] = pRow->idx;
      }else{
        /* Timewarp case:  Child occurs earlier in time than parent and
        ** appears below the parent in the timeline. */
        int iDownRail = ++p->mxRail;
        if( iDownRail<1 ) iDownRail = ++p->mxRail;
        pRow->iRail = findFreeRail(p, 0, pDesc->idx, inUse, pDesc->iRail);
      }
        pRow->iRail = ++p->mxRail;
        if( p->mxRail>=GR_MAX_RAIL ) return;
        pRow->railInUse = BIT(pRow->iRail);
        pParent->aiRiser[iDownRail] = pRow->idx;
        mask = BIT(iDownRail);
        for(pLoop=p->pFirst; pLoop; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
      pDesc->aiRaiser[pRow->iRail] = pRow->idx;
    }
    mask = 1<<pRow->iRail;
    if( pRow->isLeaf ){
      }
    }
    mask = BIT(pRow->iRail);
    pRow->railInUse |= mask;
    if( pRow->pChild ){
      inUse &= ~mask;
    }else{
      assignChildrenToRail(pRow, tmFlags);
    }else if( !omitDescenders && count_nonbranch_children(pRow->rid)!=0 ){
      inUse |= mask;
      if( !pRow->timeWarp ) riser_to_top(pRow);
    }
    if( pParent ){
      if( pParent->idx>pRow->idx ){
        /* Common case:  Parent is below current row in the graph */
    for(pLoop=pRow; pLoop && pLoop!=pDesc; pLoop=pLoop->pNext){
      pLoop->railInUse |= mask;
    }
    pDesc->railInUse |= mask;
        for(pLoop=pParent->pPrev; pLoop && pLoop!=pRow; pLoop=pLoop->pPrev){
          pLoop->railInUse |= mask;
        }
      }else{
        /* Timewarp case: Parent is above current row in the graph */
        for(pLoop=pParent->pNext; pLoop && pLoop!=pRow; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
      }
    }
  }

  /*
  ** Insert merge rails and merge arrows
  */
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    int iReuseIdx = -1;
    int iReuseRail = -1;
    int isCherrypick = 0;
    for(i=1; i<pRow->nParent; i++){
      int parentRid = pRow->aParent[i];
      GraphRowId parentRid = pRow->aParent[i];
      if( i==pRow->nNonCherrypick ){
        /* Because full merges are laid out before cherrypicks,
        ** it is ok to use a full-merge raiser for a cherrypick.
        ** See the graph on check-in 8ac66ef33b464d28 for example
        **    iReuseIdx = -1;
        **    iReuseRail = -1; */
        isCherrypick = 1;
      }
      pDesc = hashFind(p, parentRid);
      if( pDesc==0 ) continue;
      if( pDesc->mergeOut<0 ){
        int iTarget = (pRow->iRail + pDesc->iRail)/2;
        pDesc->mergeOut = findFreeRail(p, pRow->idx, pDesc->idx, 0, iTarget);
        pDesc->mergeUpto = pRow->idx;
        mask = 1<<pDesc->mergeOut;
        pDesc->railInUse |= mask;
        for(pDesc=pRow->pNext; pDesc && pDesc->rid!=parentRid;
             pDesc=pDesc->pNext){
          pDesc->railInUse |= mask;
      if( pDesc==0 ){
        int iMrail = -1;
        /* Merge from a node that is off-screen */
        if( iReuseIdx>=p->nRow+1 ){
          continue;  /* Suppress multiple off-screen merges */
        }
        for(j=0; j<GR_MAX_RAIL; j++){
          if( mergeRiserFrom[j]==parentRid ){
            iMrail = j;
            break;
          }
        }
        if( iMrail==-1 ){
          iMrail = findFreeRail(p, pRow->idx, p->pLast->idx, 0, 1);
          if( p->mxRail>=GR_MAX_RAIL ) return;
          mergeRiserFrom[iMrail] = parentRid;
        }
        iReuseIdx = p->nRow+1;
        iReuseRail = iMrail;
        mask = BIT(iMrail);
        if( i>=pRow->nNonCherrypick ){
          pRow->mergeIn[iMrail] = 2;
          pRow->cherrypickDown |= mask;
        }else{
          pRow->mergeIn[iMrail] = 1;
          pRow->mergeDown |= mask;
        }
        for(pLoop=pRow->pNext; pLoop; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
      }else{
        /* The merge parent node does exist on this graph */
        if( iReuseIdx>pDesc->idx
         && pDesc->nMergeChild==1
        ){
          /* Reuse an existing merge riser */
          pDesc->mergeOut = iReuseRail;
          if( isCherrypick ){
            pDesc->cherrypickUpto = pDesc->idx;
          }else{
            pDesc->hasNormalOutMerge = 1;
            pDesc->mergeUpto = pDesc->idx;
      }
      pRow->mergeIn |= 1<<pDesc->mergeOut;
          }
        }else{
          /* Create a new merge for an on-screen node */
          createMergeRiser(p, pDesc, pRow, isCherrypick);
          if( p->mxRail>=GR_MAX_RAIL ) return;
          if( iReuseIdx<0
           && pDesc->nMergeChild==1
           && (pDesc->iRail!=pDesc->mergeOut || pDesc->isLeaf)
          ){
            iReuseIdx = pDesc->idx;
            iReuseRail = pDesc->mergeOut;
          }
        }
      }
    }
  }

  /*
  ** Insert merge rails from primaries to duplicates. 
  ** Insert merge rails from primaries to duplicates.
  */
  if( hasDup ){
    int dupRail;
    int mxRail;
    find_max_rail(p);
    mxRail = p->mxRail;
    dupRail = mxRail+1;
    if( p->mxRail>=GR_MAX_RAIL ) return;
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      if( !pRow->isDup ) continue;
      pRow->iRail = dupRail;
      pDesc = hashFind(p, pRow->rid);
      assert( pDesc!=0 && pDesc!=pRow );
      createMergeRiser(p, pDesc, pRow, 0);
      if( pDesc->mergeOut<0 ){
      if( pDesc->mergeOut>mxRail ) mxRail = pDesc->mergeOut;
        int iTarget = (pRow->iRail + pDesc->iRail)/2;
        pDesc->mergeOut = findFreeRail(p, pRow->idx, pDesc->idx, 0, iTarget);
        pDesc->mergeUpto = pRow->idx;
        mask = 1<<pDesc->mergeOut;
        pDesc->railInUse |= mask;
        for(pLoop=pRow->pNext; pLoop && pLoop!=pDesc; pLoop=pLoop->pNext){
          pLoop->railInUse |= mask;
        }
    }
    if( dupRail<=mxRail ){
      dupRail = mxRail+1;
      for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
        if( pRow->isDup ) pRow->iRail = dupRail;
      }
      pRow->mergeIn |= 1<<pDesc->mergeOut;
    }
    if( mxRail>=GR_MAX_RAIL ) return;
  }

  /*
  ** Find the maximum rail number.
  */
  find_max_rail(p);
  for(i=0; i<GR_MAX_RAIL; i++) p->railMap[i] = i;
  p->mxRail = 0;
  for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
    if( pRow->iRail>p->mxRail ) p->mxRail = pRow->iRail;
    if( pRow->mergeOut>p->mxRail ) p->mxRail = pRow->mergeOut;
  }
}

  /* If a leaf node has a merge riser going up on a different rail,
  ** try to move the rail of the node (and its ancestors) to be underneath
  ** the merge riser.  This is an optimization that improves the
  ** appearance of graph but is not strictly necessary.
  */
  if( nTimewarp==0 && p->hasOffsetMergeRiser ){
    for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
      GraphRow *pBottom;       /* Bottom row of a branch */
      GraphRow *pRoot;         /* Node off of which the branch diverges */
      int iFrom;               /* Proposed to move from this rail */
      int iTo;                 /* Move the branch to this rail */

      iFrom = pRow->iRail;
      if( pRow->aiRiser[iFrom]>=0 ) continue;  /* Not a leaf */
      if( pRow->mergeOut<0 ) continue;         /* No merge riser */
      if( pRow->mergeOut==iFrom ) continue;    /* Riser already aligned */
      iTo = pRow->mergeOut;

      /* Find the bottom (oldest) node in the branch */
      pBottom = 0;
      for(pLoop=pRow; pLoop; pLoop=pLoop->pNext){
        if( pLoop->idxTop==pRow->idx ) pBottom = pLoop;
      }
      if( pBottom==0 ) continue;  /* Not possible */

      /* Verify that the rail we want to shift into is clear */
      pLoop = pBottom;
      if( pLoop->pNext ) pLoop = pLoop->pNext;
      if( !railIsClear(pLoop, pRow->idx+1, iTo) ){
        /* Other nodes or risers are already using the space that
        ** we propose to move the pRow branch into. */
        continue;
      }

      /* Find the "root" of the branch.  The root is a different branch
      ** from which the pRow branch emerges.  There might not be a root
      ** if the pRow branch started off the bottom of the screen.
      */
      for(pRoot=pBottom->pNext; pRoot; pRoot=pRoot->pNext){
        if( pRoot->aiRiser[iFrom]==pBottom->idx ) break;
      }
      if( pRoot && pRoot->iRail==iTo ){
        /* The parent branch from which this branch emerges is on the
        ** same rail as pRow.  Do not shift as that would stack a child
        ** branch directly above its parent. */
        continue;
      }

      /* All clear.  Make the translation
      */
      for(pLoop=pRow; pLoop && pLoop->idx<=pBottom->idx; pLoop=pLoop->pNext){
        if( pLoop->iRail==iFrom ){
          pLoop->iRail = iTo;
          pLoop->aiRiser[iTo] = pLoop->aiRiser[iFrom];
          pLoop->aiRiser[iFrom] = -1;
        }
      }
      if( pRoot ){
        pRoot->aiRiser[iTo] = pRoot->aiRiser[iFrom];
        pRoot->aiRiser[iFrom] = -1;
      }
    }
  }

  /*
  ** Compute the rail mapping that tries to put the branch named
  ** zLeftBranch at the left margin.  Other branches that merge
  ** with zLeftBranch are to the right with merge rails in between.
  **
  ** aMap[X]=Y means that the X-th rail is drawn as the Y-th rail.
  **
  ** Do not move rails around if there are timewarps, because that can
  ** seriously mess up the display of timewarps.  Timewarps should be
  ** rare so this should not be a serious limitation to the algorithm.
  */
  aMap = p->aiRailMap;
  for(i=0; i<=p->mxRail; i++) aMap[i] = i; /* Set up a default mapping */
  if( nTimewarp==0 ){
    /* Priority bits:
    **
    **    0x04      The preferred branch
    **
    **    0x02      A merge rail - a rail that contains merge lines into
    **              the preferred branch.  Only applies if a preferred branch
    **              is defined.  This improves the display of r=BRANCH
    **              options to /timeline.
    **
    **    0x01      A rail that merges with the preferred branch
    */
    u8 aPriority[GR_MAX_RAIL];
    memset(aPriority, 0, p->mxRail+1);
    if( zLeftBranch ){
      char *zLeft = persistBranchName(p, zLeftBranch);
      for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
        if( pRow->zBranch==zLeft ){
          aPriority[pRow->iRail] |= 4;
          for(i=0; i<=p->mxRail; i++){
            if( pRow->mergeIn[i] ) aPriority[i] |= 1;
          }
          if( pRow->mergeOut>=0 ) aPriority[pRow->mergeOut] |= 1;
        }
      }
      for(i=0; i<=p->mxRail; i++){
        if( p->mergeRail & BIT(i) ){
          aPriority[i] |= 2;
        }
      }
    }else{
      j = 1;
      aPriority[0] = 4;
      for(pRow=p->pFirst; pRow; pRow=pRow->pNext){
        if( pRow->iRail==0 ){
          for(i=0; i<=p->mxRail; i++){
            if( pRow->mergeIn[i] ) aPriority[i] |= 1;
          }
          if( pRow->mergeOut>=0 ) aPriority[pRow->mergeOut] |= 1;
        }
      }
    }

#if 0
    fprintf(stderr,"mergeRail: 0x%llx\n", p->mergeRail);
    fprintf(stderr,"Priority:");
    for(i=0; i<=p->mxRail; i++) fprintf(stderr," %d", aPriority[i]);
    fprintf(stderr,"\n");
#endif

    j = 0;
    for(i=0; i<=p->mxRail; i++){
      if( aPriority[i]>=4 ) aMap[i] = j++;
    }
    for(i=p->mxRail; i>=0; i--){
      if( aPriority[i]==3 ) aMap[i] = j++;
    }
    for(i=0; i<=p->mxRail; i++){
      if( aPriority[i]==1 || aPriority[i]==2 ) aMap[i] = j++;
    }
    for(i=0; i<=p->mxRail; i++){
      if( aPriority[i]==0 ) aMap[i] = j++;
    }
    cgi_printf("<!-- aiRailMap =");
    for(i=0; i<=p->mxRail; i++) cgi_printf(" %d", aMap[i]);
    cgi_printf(" -->\n");
  }

  p->nErr = 0;
}
Added src/graph.js.















































































































































































































































































































































































































































































































































































































































































































































































































































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/* This module contains javascript needed to render timeline graphs in Fossil.
**
** There can be multiple graphs on a single webpage, but this script is only
** loaded once.  
**
** Prior to sourcing this script, there should be a separate
** <script type='application/json' id='timeline-data-NN'> for each graph,
** each containing JSON like this:
**
**   { "iTableId": INTEGER,         // Table sequence number (NN)
**     "circleNodes": BOOLEAN,      // True for circle nodes. False for squares
**     "showArrowheads": BOOLEAN,   // True for arrowheads. False to omit
**     "iRailPitch": INTEGER,       // Spacing between vertical lines (px)
**     "colorGraph": BOOLEAN,       // True to put color on graph lines
**     "nomo": BOOLEAN,             // True to join merge lines with rails
**     "iTopRow": INTEGER,          // Index of top-most row in the graph
**     "omitDescenders": BOOLEAN,   // Omit ancestor lines off bottom of screen
**     "fileDiff": BOOLEAN,         // True for file diff. False for check-in
**     "scrollToSelect": BOOLEAN,   // Scroll to selection on first render
**     "nrail": INTEGER,            // Number of vertical "rails"
**     "baseUrl": TEXT,             // Top-level URL
**     "dwellTimeout": INTEGER,     // Tooltip show delay in milliseconds
**     "closeTimeout": INTEGER,     // Tooltip close delay in milliseconds
**     "hashDigits": INTEGER,       // Limit of tooltip hashes ("hash-digits")
**     "rowinfo": ROWINFO-ARRAY }
**
** The rowinfo field is an array of structures, one per entry in the timeline,
** where each structure has the following fields:
**
**   id:  The id of the <div> element for the row. This is an integer.
**        to get an actual id, prepend "m" to the integer.  The top node
**        is iTopRow and numbers increase moving down the timeline.
**   bg:  The background color for this row
**    r:  The "rail" that the node for this row sits on.  The left-most
**        rail is 0 and the number increases to the right.
**    d:  If exists and true then there is a "descender" - an arrow
**        coming from the bottom of the page straight up to this node.
**   mo:  "merge-out".  If it exists, this is the rail position
**        for the upward portion of a merge arrow.  The merge arrow goes as
**        a solid normal merge line up to the row identified by "mu" and
**        then as a dashed cherrypick merge line up further to "cu".
**        If this value is omitted if there are no merge children.
**   mu:  The id of the row which is the top of the merge-out arrow.
**        Only exists if "mo" exists.
**   cu:  Extend the mu merge arrow up to this row as a cherrypick
**        merge line, if this value exists.
**    u:  Draw a thick child-line out of the top of this node and up to
**        the node with an id equal to this value.  0 if it is straight to
**        the top of the page, -1 if there is no thick-line riser.
**    f:  0x01: a leaf node.
**   au:  An array of integers that define thick-line risers for branches.
**        The integers are in pairs.  For each pair, the first integer is
**        is the rail on which the riser should run and the second integer
**        is the id of the node upto which the riser should run. If there
**        are no risers, this array does not exist.
**   mi:  "merge-in".  An array of integer rail positions from which
**        merge arrows should be drawn into this node.  If the value is
**        negative, then the rail position is -1-mi[] and a thin merge-arrow
**        descender is drawn to the bottom of the screen. This array is
**        omitted if there are no inbound merges.
**   ci:  "cherrypick-in". Like "mi" except for cherrypick merges.
**        omitted if there are no cherrypick merges.
**    h:  The artifact hash of the object being graphed
*/
/* The amendCss() function does a one-time change to the CSS to account
** for the "circleNodes" and "showArrowheads" settings.  Do this change
** only once, even if there are multiple graphs being rendered.
*/
var amendCssOnce = 1; // Only change the CSS one time
function amendCss(circleNodes,showArrowheads){
  if( !amendCssOnce ) return;
  var css = "";
  if( circleNodes ){
    css += ".tl-node, .tl-node:after { border-radius: 50%; }";
  }
  if( !showArrowheads ){
    css += ".tl-arrow.u { display: none; }";
  }
  if( css!=="" ){
    var style = document.createElement("style");
    style.textContent = css;
    document.querySelector("head").appendChild(style);
  }
  amendCssOnce = 0;
}

/* The <span> object that holds the tooltip */
var tooltipObj = document.createElement("span");
tooltipObj.className = "tl-tooltip";
tooltipObj.style.display = "none";
document.getElementsByClassName("content")[0].appendChild(tooltipObj);
tooltipObj.onmouseenter = function(){
  /* Hold the tooltip constant as long as the mouse is over the tooltip.
  ** In other words, do not let any of the timers changes the tooltip while
  ** the mouse is directly over the tooltip.  This makes it easier for the
  ** user to move over top of the "copy-button" or the hyperlink to the
  ** /info page. */
  stopCloseTimer();
  stopDwellTimer();
  tooltipInfo.ixHover = tooltipInfo.ixActive;
}
tooltipObj.onmouseleave = function(){
  if (tooltipInfo.ixActive != -1) resumeCloseTimer();
};

/* State information for the tooltip popup and its timers */
window.tooltipInfo = {
  dwellTimeout: 250,  /* The tooltip dwell timeout. */
  closeTimeout: 3000, /* The tooltip close timeout. */
  hashDigits: 16,     /* Limit of tooltip hashes ("hash-digits"). */
  idTimer: 0,         /* The tooltip dwell timer id */
  idTimerClose: 0,    /* The tooltip close timer id */
  ixHover: -1,        /* The mouse is over a thick riser arrow for
                      ** tx.rowinfo[ixHover].  Or -2 when the mouse is
                      ** over a graph node.  Or -1 when the mouse is not
                      ** over anything. */
  ixActive: -1,       /* The item shown in the tooltip is tx.rowinfo[ixActive].
                      ** ixActive is -1 if the tooltip is not visible */
  nodeHover: null,    /* Graph node under mouse when ixHover==-2 */
  idNodeActive: 0,    /* Element ID of the graph node with the tooltip. */
  posX: 0, posY: 0    /* The last mouse position. */
};

/* Functions used to control the tooltip popup and its timer */
function onKeyDown(event){  /* Hide the tooltip when ESC key pressed */
  var key = event.which || event.keyCode;
  if( key==27 ){
    event.stopPropagation();
    hideGraphTooltip();
  }
}
function hideGraphTooltip(){ /* Hide the tooltip */
  document.removeEventListener('keydown',onKeyDown,/* useCapture == */true);
  stopCloseTimer();
  tooltipObj.style.display = "none";
  tooltipInfo.ixActive = -1;
  tooltipInfo.idNodeActive = 0;
}
window.onpagehide = hideGraphTooltip;
function stopDwellTimer(){
  if(tooltipInfo.idTimer!=0){
    clearTimeout(tooltipInfo.idTimer);
    tooltipInfo.idTimer = 0;
  }
}
function resumeCloseTimer(){
  /* This timer must be stopped explicitly to reset the elapsed timeout. */
  if(tooltipInfo.idTimerClose==0 && tooltipInfo.closeTimeout>0) {
    tooltipInfo.idTimerClose = setTimeout(function(){
      tooltipInfo.idTimerClose = 0;
      hideGraphTooltip();
    },tooltipInfo.closeTimeout);
  }
}
function stopCloseTimer(){
  if(tooltipInfo.idTimerClose!=0){
    clearTimeout(tooltipInfo.idTimerClose);
    tooltipInfo.idTimerClose = 0;
  }
}

/* Construct that graph corresponding to the timeline-data-N object that
** is passed in by the tx parameter */
function TimelineGraph(tx){
  var topObj = document.getElementById("timelineTable"+tx.iTableId);
  amendCss(tx.circleNodes, tx.showArrowheads);
  tooltipInfo.dwellTimeout = tx.dwellTimeout
  tooltipInfo.closeTimeout = tx.closeTimeout
  tooltipInfo.hashDigits = tx.hashDigits
  topObj.onclick = clickOnGraph
  topObj.ondblclick = dblclickOnGraph
  topObj.onmousemove = function(e) {
    var ix = findTxIndex(e);
    topObj.style.cursor = (ix<0) ? "" : "pointer"
    mouseOverGraph(e,ix,null);
  };
  topObj.onmouseleave = function(e) {
    /* Hide the tooltip if the mouse is outside the "timelineTableN" element,
    ** and outside the tooltip. */
    if(e.relatedTarget && e.relatedTarget != tooltipObj){
      tooltipInfo.ixHover = -1;
      hideGraphTooltip();
      stopDwellTimer();
      stopCloseTimer();
    }
  };
  function mouseOverNode(e){ /* Invoked by mousemove events over a graph node */
    e.stopPropagation()
    mouseOverGraph(e,-2,this)
  }
  /* Combined mousemove handler for graph nodes and rails. */
  function mouseOverGraph(e,ix,node){
    stopDwellTimer();                 // Mouse movement: reset the dwell timer.
    var ownTooltip =   // Check if the hovered element already has the tooltip.
      (ix>=0 && ix==tooltipInfo.ixActive) ||
      (ix==-2 && tooltipInfo.idNodeActive==node.id);
    if(ownTooltip) stopCloseTimer();  // ownTooltip: clear the close timer.
    else resumeCloseTimer();          // !ownTooltip: resume the close timer.
    tooltipInfo.ixHover = ix;
    tooltipInfo.nodeHover = node;
    tooltipInfo.posX = e.clientX;
    tooltipInfo.posY = e.clientY;
    if(ix!=-1 && !ownTooltip && tooltipInfo.dwellTimeout>0){  // Go dwell timer.
      tooltipInfo.idTimer = setTimeout(function(){
        tooltipInfo.idTimer = 0;
        stopCloseTimer();
        showGraphTooltip();
      },tooltipInfo.dwellTimeout);
    }
  }
  var canvasDiv;
  var railPitch;
  var mergeOffset;
  var node, arrow, arrowSmall, line, mArrow, mLine, wArrow, wLine;

  function initGraph(){
    var parent = topObj.rows[0].cells[1];
    parent.style.verticalAlign = "top";
    canvasDiv = document.createElement("div");
    canvasDiv.className = "tl-canvas";
    canvasDiv.style.position = "absolute";
    parent.appendChild(canvasDiv);
  
    var elems = {};
    var elemClasses = [
      "rail", "mergeoffset", "node", "arrow u", "arrow u sm", "line",
      "arrow merge r", "line merge", "arrow warp", "line warp",
      "line cherrypick", "line dotted"
    ];
    for( var i=0; i<elemClasses.length; i++ ){
      var cls = elemClasses[i];
      var elem = document.createElement("div");
      elem.className = "tl-" + cls;
      if( cls.indexOf("line")==0 ) elem.className += " v";
      canvasDiv.appendChild(elem);
      var k = cls.replace(/\s/g, "_");
      var r = elem.getBoundingClientRect();
      var w = Math.round(r.right - r.left);
      var h = Math.round(r.bottom - r.top);
      elems[k] = {w: w, h: h, cls: cls};
    }
    node = elems.node;
    arrow = elems.arrow_u;
    arrowSmall = elems.arrow_u_sm;
    line = elems.line;
    mArrow = elems.arrow_merge_r;
    mLine = elems.line_merge;
    cpLine = elems.line_cherrypick;
    wArrow = elems.arrow_warp;
    wLine = elems.line_warp;
    dotLine = elems.line_dotted;
  
    var minRailPitch = Math.ceil((node.w+line.w)/2 + mArrow.w + 1);
    if( window.innerWidth<400 ){
      railPitch = minRailPitch;
    }else{
      if( tx.iRailPitch>0 ){
        railPitch = tx.iRailPitch;
      }else{
        railPitch = elems.rail.w;
        railPitch -= Math.floor((tx.nrail-1)*(railPitch-minRailPitch)/21);
      }
      railPitch = Math.max(railPitch, minRailPitch);
    }
  
    if( tx.nomo ){
      mergeOffset = 0;
    }else{
      mergeOffset = railPitch-minRailPitch-mLine.w;
      mergeOffset = Math.min(mergeOffset, elems.mergeoffset.w);
      mergeOffset = mergeOffset>0 ? mergeOffset + line.w/2 : 0;
    }
  
    var canvasWidth = (tx.nrail-1)*railPitch + node.w;
    canvasDiv.style.width = canvasWidth + "px";
    canvasDiv.style.position = "relative";
  }
  function drawBox(cls,color,x0,y0,x1,y1){
    var n = document.createElement("div");
    x0 = Math.floor(x0);
    y0 = Math.floor(y0);
    x1 = x1 || x1===0 ? Math.floor(x1) : x0;
    y1 = y1 || y1===0 ? Math.floor(y1) : y0;
    if( x0>x1 ){ var t=x0; x0=x1; x1=t; }
    if( y0>y1 ){ var t=y0; y0=y1; y1=t; }
    var w = x1-x0;
    var h = y1-y0;
    n.style.position = "absolute";
    n.style.left = x0+"px";
    n.style.top = y0+"px";
    if( w ) n.style.width = w+"px";
    if( h ) n.style.height = h+"px";
    if( color ) n.style.backgroundColor = color;
    n.className = "tl-"+cls;
    canvasDiv.appendChild(n);
    return n;
  }
  function absoluteY(obj){
    var y = 0;
    do{
      y += obj.offsetTop;
    }while( obj = obj.offsetParent );
    return y;
  }
  function absoluteX(obj){
    var x = 0;
    do{
      x += obj.offsetLeft;
    }while( obj = obj.offsetParent );
    return x;
  }
  function miLineY(p){
    return p.y + node.h - mLine.w - 1;
  }
  function drawLine(elem,color,x0,y0,x1,y1){
    var cls = elem.cls + " ";
    if( x1===null ){
      x1 = x0+elem.w;
      cls += "v";
    }else{
      y1 = y0+elem.w;
      cls += "h";
    }
    return drawBox(cls,color,x0,y0,x1,y1);
  }
  function drawUpArrow(from,to,color,id){
    var y = to.y + node.h;
    var arrowSpace = from.y - y + (!from.id || from.r!=to.r ? node.h/2 : 0);
    var arw = arrowSpace < arrow.h*1.5 ? arrowSmall : arrow;
    var x = to.x + (node.w-line.w)/2;
    var y0 = from.y + node.h/2;
    var y1 = Math.ceil(to.y + node.h + arw.h/2);
    var n = drawLine(line,color,x,y0,null,y1);
    addToolTip(n,id)
    x = to.x + (node.w-arw.w)/2;
    n = drawBox(arw.cls,null,x,y);
    if(color) n.style.borderBottomColor = color;
    addToolTip(n,id)
  }
  function drawDotted(from,to,color,id){
    var x = to.x + (node.w-line.w)/2;
    var y0 = from.y + node.h/2;
    var y1 = Math.ceil(to.y + node.h);
    var n = drawLine(dotLine,null,x,y0,null,y1)
    if( color ) n.style.borderColor = color
    addToolTip(n,id)
  }
  function addToolTip(n,id){
    if( id ) n.setAttribute("data-ix",id-tx.iTopRow)
  }
  /* Draw thin horizontal or vertical lines representing merges */
  function drawMergeLine(x0,y0,x1,y1){
    drawLine(mLine,null,x0,y0,x1,y1);
  }
  function drawCherrypickLine(x0,y0,x1,y1){
    drawLine(cpLine,null,x0,y0,x1,y1);
  }
  /* Draw an arrow representing an in-bound merge from the "rail"-th rail
  ** over to the node of "p".  Make it a checkpoint merge is "isCP" is true */
  function drawMergeArrow(p,rail,isCP){
    var x0 = rail*railPitch + node.w/2;
    if( rail in mergeLines ){
      x0 += mergeLines[rail];
      if( p.r<rail ) x0 += mLine.w;
    }else{
      x0 += (p.r<rail ? -1 : 1)*line.w/2;
    }
    var x1 = mArrow.w ? mArrow.w/2 : -node.w/2;
    x1 = p.x + (p.r<rail ? node.w + Math.ceil(x1) : -x1);
    var y = miLineY(p);
    var x = p.x + (p.r<rail ? node.w : -mArrow.w);
    var cls;
    if( isCP ){
      drawCherrypickLine(x0,y,x1,null);
      cls = "arrow cherrypick " + (p.r<rail ? "l" : "r");
    }else{
      drawMergeLine(x0,y,x1,null);
      cls = "arrow merge " + (p.r<rail ? "l" : "r");
    }
    drawBox(cls,null,x,y+(mLine.w-mArrow.h)/2);
  }
  function drawNode(p, btm){
    if( p.bg ){
      var e = document.getElementById("mc"+p.id);
      if(e) e.style.backgroundColor = p.bg;
      e = document.getElementById("md"+p.id);
      if(e) e.style.backgroundColor = p.bg;
    }
    if( p.r<0 ) return;
    if( p.u>0 ) drawUpArrow(p,tx.rowinfo[p.u-tx.iTopRow],p.fg,p.id);
    if( p.sb>0 ) drawDotted(p,tx.rowinfo[p.sb-tx.iTopRow],p.fg,p.id);
    var cls = node.cls;
    if( p.hasOwnProperty('mi') && p.mi.length ) cls += " merge";
    if( p.f&2 ) cls += " closed-leaf";
    else if( p.f&1 ) cls += " leaf";
    var n = drawBox(cls,p.bg,p.x,p.y);
    n.id = "tln"+p.id;
    n.onclick = clickOnNode;
    n.ondblclick = dblclickOnNode;
    n.onmousemove = mouseOverNode;
    n.style.zIndex = 10;
    if( p.f&2 ){
      var pt1 = 0;
      var pt2 = 100;
      if( tx.circleNodes ){
        pt1 = 14;
        pt2 = 86;
      }
      n.innerHTML = "<svg width='100%' height='100%'viewbox='0 0 100 100'>"
          + `<path d='M ${pt1},${pt1} L ${pt2},${pt2} M ${pt1},${pt2} L ${pt2},${pt1}'`
          + " stroke='currentcolor' stroke-width='13'/>"
          + "</svg>";
    }
    if( !tx.omitDescenders ){
      if( p.u==0 ){
        if( p.hasOwnProperty('mo') && p.r==p.mo ){
          var ix = p.hasOwnProperty('cu') ? p.cu : p.mu;
          var top = tx.rowinfo[ix-tx.iTopRow]
          drawUpArrow(p,{x: p.x, y: top.y-node.h}, p.fg, p.id);
        }else if( p.y>100 ){
          drawUpArrow(p,{x: p.x, y: p.y-50}, p.fg, p.id);
        }else{
          drawUpArrow(p,{x: p.x, y: 0},p.fg, p.id);
        }
      }
      if( p.hasOwnProperty('d') ){
        if( p.y + 150 >= btm ){
          drawUpArrow({x: p.x, y: btm - node.h/2},p,p.fg,p.id);
        }else{
          drawUpArrow({x: p.x, y: p.y+50},p,p.fg,p.id);
          drawDotted({x: p.x, y: p.y+63},{x: p.x, y: p.y+50-node.h/2},p.fg,p.id);
        }
      }
    }
    if( p.hasOwnProperty('mo') ){
      var x0 = p.x + node.w/2;
      var x1 = p.mo*railPitch + node.w/2;
      var u = tx.rowinfo[p.mu-tx.iTopRow];
      var mtop = u;
      if( p.hasOwnProperty('cu') ){
        mtop = tx.rowinfo[p.cu-tx.iTopRow];
      }
      var y1 = miLineY(u);
      if( p.u<=0 || p.mo!=p.r ){
        if( p.u==0 && p.mo==p.r ){
          mergeLines[p.mo] = mtop.r<p.r ? -mergeOffset-mLine.w : mergeOffset;
        }else{
          mergeLines[p.mo] = -mLine.w/2;
        }
        x1 += mergeLines[p.mo]
        var y0 = p.y+2;
        var isCP = p.hasOwnProperty('cu');
        if( p.mu==p.id ){
          /* Special case:  The merge riser already exists.  Only draw the
          /* horizontal line or arrow going from the node out to the riser. */
          var dx = x1<x0 ? mArrow.w : -mArrow.w;
          if( isCP ){
            drawCherrypickLine(x0,y0,x1+dx,null);
            cls = "arrow cherrypick " + (x1<x0 ? "l" : "r");
          }else{
            drawMergeLine(x0,y0,x1+dx,null);
            cls = "arrow merge " + (x1<x0 ? "l" : "r");
          }
          if( !isCP || p.mu==p.cu ){
            dx = x1<x0 ? mLine.w : -(mArrow.w + mLine.w/2);
            drawBox(cls,null,x1+dx,y0+(mLine.w-mArrow.h)/2);
          }
          y1 = y0;
        }else{
          drawMergeLine(x0,y0,x1+(x0<x1 ? mLine.w : 0),null);
          drawMergeLine(x1,y0+mLine.w,null,y1);
        }
        if( isCP && p.cu!=p.id ){
          var u2 = tx.rowinfo[p.cu-tx.iTopRow];
          var y2 = miLineY(u2);
          drawCherrypickLine(x1,y1,null,y2);
        }
      }else if( mergeOffset ){
        mergeLines[p.mo] = mtop.r<p.r ? -mergeOffset-mLine.w : mergeOffset;
        x1 += mergeLines[p.mo];
        if( p.mu<p.id ){
          drawMergeLine(x1,p.y+node.h/2,null,y1);
        }
        if( p.hasOwnProperty('cu') ){
          var u2 = tx.rowinfo[p.cu-tx.iTopRow];
          var y2 = miLineY(u2);
          drawCherrypickLine(x1,y1,null,y2);
        }
      }else{
        delete mergeLines[p.mo];
      }
    }
    if( p.hasOwnProperty('au') ){
      for( var i=0; i<p.au.length; i+=2 ){
        var rail = p.au[i];
        var x0 = p.x + node.w/2;
        var x1 = rail*railPitch + (node.w-line.w)/2;
        if( x0<x1 ){
          x0 = Math.ceil(x0);
          x1 += line.w;
        }
        var y0 = p.y + (node.h-line.w)/2;
        var u = tx.rowinfo[p.au[i+1]-tx.iTopRow];
        if( u.id<p.id ){
          // normal thick up-arrow
          drawLine(line,u.fg,x0,y0,x1,null);
          drawUpArrow(p,u,u.fg,u.id);
        }else{
          // timewarp:  The child node occurs before the parent
          var y1 = u.y + (node.h-line.w)/2;
          var n = drawLine(wLine,u.fg,x0,y0,x1,null);
          addToolTip(n,u.id)
          n = drawLine(wLine,u.fg,x1-line.w,y0,null,y1+line.w);
          addToolTip(n,u.id)
          n = drawLine(wLine,u.fg,x1,y1,u.x-wArrow.w/2,null);
          addToolTip(n,u.id)
          var x = u.x-wArrow.w;
          var y = u.y+(node.h-wArrow.h)/2;
          n = drawBox(wArrow.cls,null,x,y);
          addToolTip(n,u.id)
          if( u.fg ) n.style.borderLeftColor = u.fg;
        }
      }
    }
    if( p.hasOwnProperty('mi') ){
      for( var i=0; i<p.mi.length; i++ ){
        var rail = p.mi[i];
        if( rail<0 ){
          rail = -1-rail;
          mergeLines[rail] = -mLine.w/2;
          var x = rail*railPitch + (node.w-mLine.w)/2;
          var y = miLineY(p);
          drawMergeLine(x,y,null,mergeBtm[rail]);
          mergeBtm[rail] = y;
        }
        drawMergeArrow(p,rail,0);
      }
    }
    if( p.hasOwnProperty('ci') ){
      for( var i=0; i<p.ci.length; i++ ){
        var rail = p.ci[i];
        if( rail<0 ){
          rail = -rail;
          mergeLines[rail] = -mLine.w/2;
          var x = rail*railPitch + (node.w-mLine.w)/2;
          var y = miLineY(p);
          drawCherrypickLine(x,y,null,mergeBtm[rail]);
          mergeBtm[rail] = y;
        }
        drawMergeArrow(p,rail,1);
      }
    }
  }
  var mergeLines;
  var mergeBtm = new Array;
  function renderGraph(){
    mergeLines = {};
    canvasDiv.innerHTML = "";
    var canvasY = absoluteY(canvasDiv);
    for(var i=0; i<tx.rowinfo.length; i++ ){
      var e = document.getElementById("m"+tx.rowinfo[i].id);
      tx.rowinfo[i].y = absoluteY(e) - canvasY;
      tx.rowinfo[i].x = tx.rowinfo[i].r*railPitch;
    }
    var tlBtm = document.getElementById(tx.bottomRowId);
    if( tlBtm.offsetHeight<node.h ){
      tlBtm.style.height = node.h + "px";
    }
    var btm = absoluteY(tlBtm) - canvasY + tlBtm.offsetHeight;
    for( var i=0; i<tx.nrail; i++) mergeBtm[i] = btm;
    for( var i=tx.rowinfo.length-1; i>=0; i-- ){
      drawNode(tx.rowinfo[i], btm);
    }
  }
  var selRow;
  function clickOnNode(e){
    hideGraphTooltip()
    var p = tx.rowinfo[parseInt(this.id.match(/\d+$/)[0], 10)-tx.iTopRow];
    if( !selRow ){
      selRow = p;
      this.className += " sel";
      canvasDiv.className += " sel";
    }else if( selRow==p ){
      selRow = null;
      this.className = this.className.replace(" sel", "");
      canvasDiv.className = canvasDiv.className.replace(" sel", "");
    }else{
      if( tx.fileDiff ){
        location.href=tx.baseUrl + "/fdiff?v1="+selRow.h+"&v2="+p.h;
      }else{
        var href = tx.baseUrl + "/vdiff?from="+selRow.h+"&to="+p.h;
        let params = (new URL(document.location)).searchParams;
        if(params && typeof params === "object"){
          /* When called from /timeline page, If chng=str was specified in the
          ** QueryString, specify glob=str on the /vdiff page */
          let glob = params.get("chng");
          if( !glob ){
            /* When called from /vdiff page, keep the glob= QueryString if
            ** present. */
            glob = params.get("glob");
          }
          if( glob ){
            href += "&glob=" + glob;
          }
        }
        location.href = href;
      }
    }
    e.stopPropagation()
  }
  function dblclickOnNode(e){
    var p = tx.rowinfo[parseInt(this.id.match(/\d+$/)[0], 10)-tx.iTopRow];
    window.location.href = tx.baseUrl+"/info/"+p.h
    e.stopPropagation()
  }
  function findTxIndex(e){
    if( !tx.rowinfo ) return -1;
    /* Look at all the graph elements.  If any graph elements that is near
    ** the click-point "e" and has a "data-ix" attribute, then return
    ** the value of that attribute.  Otherwise return -1 */
    var x = e.clientX + window.pageXOffset - absoluteX(canvasDiv);
    var y = e.clientY + window.pageYOffset - absoluteY(canvasDiv);
    var aNode = canvasDiv.childNodes
    var nNode = aNode.length;
    var i;
    for(i=0;i<nNode;i++){
      var n = aNode[i]
      if( !n.hasAttribute("data-ix") ) continue;
      if( x<n.offsetLeft-5 ) continue;
      if( x>n.offsetLeft+n.offsetWidth+5 ) continue;
      if( y<n.offsetTop-5 ) continue;
      if( y>n.offsetTop+n.offsetHeight ) continue;
      return n.getAttribute("data-ix")
    }
    return -1
  }
  /* Compute the hyperlink for the branch graph for tx.rowinfo[ix] */
  function branchHyperlink(ix){
    var br = tx.rowinfo[ix].br
    var dest = tx.baseUrl + "/timeline?r=" + encodeURIComponent(br)
    dest += tx.fileDiff ? "&m&cf=" : "&m&c="
    dest += encodeURIComponent(tx.rowinfo[ix].h)
    return dest
  }
  function clickOnGraph(e){
    stopCloseTimer();
    stopDwellTimer();
    tooltipInfo.ixHover = findTxIndex(e);
    tooltipInfo.posX = e.clientX;
    tooltipInfo.posY = e.clientY;
    showGraphTooltip();
  }
  function showGraphTooltip(){
    var html = null
    var ix = -1
    if( tooltipInfo.ixHover==-2 ){
      ix = parseInt(tooltipInfo.nodeHover.id.match(/\d+$/)[0],10)-tx.iTopRow
      var h = tx.rowinfo[ix].h
      var dest = tx.baseUrl + "/info/" + h
      h = h.slice(0,tooltipInfo.hashDigits); // Assume single-byte characters.
      if( tx.fileDiff ){
        html = "artifact <a id=\"tooltip-link\" href=\""+dest+"\">"+h+"</a>"
      }else{
        html = "check-in <a id=\"tooltip-link\" href=\""+dest+"\">"+h+"</a>"
      }
      tooltipInfo.ixActive = -2;
      tooltipInfo.idNodeActive = tooltipInfo.nodeHover.id;
    }else if( tooltipInfo.ixHover>=0 ){
      ix = tooltipInfo.ixHover
      var br = tx.rowinfo[ix].br
      var dest = branchHyperlink(ix)
      var hbr = br.replace(/&/g, "&amp;")
         .replace(/</g, "&lt;")
         .replace(/>/g, "&gt;")
         .replace(/"/g, "&quot;")
         .replace(/'/g, "&#039;");
      html = "branch <a id=\"tooltip-link\" href=\""+dest+"\">"+hbr+"</a>"
      tooltipInfo.ixActive = ix;
      tooltipInfo.idNodeActive = 0;
    }
    if( html ){
      /* Setup while hidden, to ensure proper dimensions. */
      var s = getComputedStyle(document.body)
      if( tx.rowinfo[ix].bg.length ){
        tooltipObj.style.backgroundColor = tx.rowinfo[ix].bg
      }else{
        tooltipObj.style.backgroundColor = s.getPropertyValue('background-color')
      }
      tooltipObj.style.borderColor =
         tooltipObj.style.color = s.getPropertyValue('color')
      tooltipObj.style.visibility = "hidden"
      tooltipObj.innerHTML = html
      tooltipObj.insertBefore(makeCopyButton("tooltip-link",0,0),
                              tooltipObj.childNodes[1]);
      tooltipObj.style.display = "inline"
      tooltipObj.style.position = "absolute"
      var x = tooltipInfo.posX + 4 + window.pageXOffset
                   - absoluteX(tooltipObj.offsetParent)
      tooltipObj.style.left = x+"px"
      var y = tooltipInfo.posY + window.pageYOffset
                   - tooltipObj.clientHeight - 4
                   - absoluteY(tooltipObj.offsetParent)
      tooltipObj.style.top = y+"px"
      tooltipObj.style.visibility = "visible"
      document.addEventListener('keydown',onKeyDown,/* useCapture == */true);
    }else{
      hideGraphTooltip()
    }
  }
  function dblclickOnGraph(e){
    var ix = findTxIndex(e);
    hideGraphTooltip()
    if( ix>=0 ){
      var dest = branchHyperlink(ix)
      window.location.href = dest
    }
  }
  function changeDisplay(selector,value){
    var x = document.getElementsByClassName(selector);
    var n = x.length;
    for(var i=0; i<n; i++) {x[i].style.display = value;}
  }
  function changeDisplayById(id,value){
    var x = document.getElementById(id);
    if(x) x.style.display=value;
  }
  function toggleDetail(){
    var id = parseInt(this.getAttribute('data-id'))
    var x = document.getElementById("detail-"+id);
    if( x.style.display=="inline" ){
      x.style.display="none";
      changeDisplayById("ellipsis-"+id,"inline");
      changeDisplayById("links-"+id,"none");
    }else{
      x.style.display="inline";
      changeDisplayById("ellipsis-"+id,"none");
      changeDisplayById("links-"+id,"inline");
    }
    checkHeight();
  }
  function scrollToSelected(){
    var x = document.getElementsByClassName('timelineSelected');
    if(x[0]){
      var h = window.innerHeight;
      var y = absoluteY(x[0]) - h/2;
      if( y>0 ) window.scrollTo(0, y);
    }
  }
  if( tx.rowinfo ){
    var lastRow = 
       document.getElementById("m"+tx.rowinfo[tx.rowinfo.length-1].id);
    var lastY = 0;
    function checkHeight(){
      var h = absoluteY(lastRow);
      if( h!=lastY ){
        renderGraph();
        lastY = h;
      }
      setTimeout(checkHeight, 1000);
    }
    initGraph();
    checkHeight();
  }else{
    function checkHeight(){}
  }
  if( tx.scrollToSelect ){
    scrollToSelected();
  }

  /* Set the onclick= attributes for elements of the "Compact" display
  ** mode so that clicking turns the details on and off.
  */
  var lx = topObj.getElementsByClassName('timelineEllipsis');
  var i;
  for(i=0; i<lx.length; i++){
    if( lx[i].hasAttribute('data-id') ) lx[i].onclick = toggleDetail;
  }
  lx = topObj.getElementsByClassName('timelineCompactComment');
  for(i=0; i<lx.length; i++){
    if( lx[i].hasAttribute('data-id') ) lx[i].onclick = toggleDetail;
  }
  if( window.innerWidth<400 ){
    /* On narrow displays, shift the date from the first column to the
    ** third column, to make the first column narrower */
    lx = topObj.getElementsByClassName('timelineDateRow');
    for(i=0; i<lx.length; i++){
      var rx = lx[i];
      if( rx.getAttribute('data-reordered') ) break;
      rx.setAttribute('data-reordered',1);
      rx.appendChild(rx.firstChild);
      rx.insertBefore(rx.childNodes[1],rx.firstChild);
    }
    /* Do not show the HH:MM timestamps on very narrow displays
    ** as they take up too much horizontal space. */
    lx = topObj.getElementsByClassName('timelineHistLink');
    for(i=0; i<lx.length; i++){
      var rx = lx[i];
      rx.style.display="none";
    }
  }
}
  
/* Look for all timeline-data-NN objects.  Load each one and draw
** a graph for each one.
*/
(function(){
  var i;
  for(i=0; 1; i++){
    var dataObj = document.getElementById("timeline-data-"+i);
    if(!dataObj) break;
    var txJson = dataObj.textContent || dataObj.innerText;
    var tx = JSON.parse(txJson);
    TimelineGraph(tx);
  }
}());
Added src/gzip.c.












































































































































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/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to incrementally generate a GZIP compressed
** file.  The GZIP format is described in RFC-1952.
**
** State information is stored in static variables, so this implementation
** can only be building up a single GZIP file at a time.
*/
#include "config.h"
#include <assert.h>
#include <zlib.h>
#include "gzip.h"

/*
** State information for the GZIP file under construction.
*/
struct gzip_state {
  int eState;           /* 0: idle   1: header  2: compressing */
  unsigned long iCRC;   /* The checksum */
  z_stream stream;      /* The working compressor */
  Blob out;             /* Results stored here */
} gzip;

/*
** Write a 32-bit integer as little-endian into the given buffer.
*/
static void put32(char *z, int v){
  z[0] = v & 0xff;
  z[1] = (v>>8) & 0xff;
  z[2] = (v>>16) & 0xff;
  z[3] = (v>>24) & 0xff;
}

/*
** Begin constructing a gzip file.
*/
void gzip_begin(sqlite3_int64 now){
  char aHdr[10];
  assert( gzip.eState==0 );
  blob_zero(&gzip.out);
  aHdr[0] = 0x1f;
  aHdr[1] = 0x8b;
  aHdr[2] = 8;
  aHdr[3] = 0;
  if( now==-1 ){
    now = db_int64(0, "SELECT (julianday('now') - 2440587.5)*86400.0");
  }
  put32(&aHdr[4], now&0xffffffff);
  aHdr[8] = 2;
  aHdr[9] = -1;
  blob_append(&gzip.out, aHdr, 10);
  gzip.iCRC = 0;
  gzip.eState = 1;
}

/*
** Add nIn bytes of content from pIn to the gzip file.
*/
#define GZIP_BUFSZ 100000
void gzip_step(const char *pIn, int nIn){
  char *zOutBuf;
  int nOut;

  nOut = nIn + nIn/10 + 100;
  if( nOut<100000 ) nOut = 100000;
  zOutBuf = fossil_malloc(nOut);
  gzip.stream.avail_in = nIn;
  gzip.stream.next_in = (unsigned char*)pIn;
  gzip.stream.avail_out = nOut;
  gzip.stream.next_out = (unsigned char*)zOutBuf;
  if( gzip.eState==1 ){
    gzip.stream.zalloc = (alloc_func)0;
    gzip.stream.zfree = (free_func)0;
    gzip.stream.opaque = 0;
    deflateInit2(&gzip.stream, 9, Z_DEFLATED, -MAX_WBITS,8,Z_DEFAULT_STRATEGY);
    gzip.eState = 2;
  }
  gzip.iCRC = crc32(gzip.iCRC, gzip.stream.next_in, gzip.stream.avail_in);
  do{
    deflate(&gzip.stream, nIn==0 ? Z_FINISH : 0);
    blob_append(&gzip.out, zOutBuf, nOut - gzip.stream.avail_out);
    gzip.stream.avail_out = nOut;
    gzip.stream.next_out = (unsigned char*)zOutBuf;
  }while( gzip.stream.avail_in>0 );
  fossil_free(zOutBuf);
}

/*
** Finish the gzip file and put the content in *pOut
*/
void gzip_finish(Blob *pOut){
  char aTrailer[8];
  assert( gzip.eState>0 );
  gzip_step("", 0);
  deflateEnd(&gzip.stream);
  put32(aTrailer, gzip.iCRC);
  put32(&aTrailer[4], gzip.stream.total_in);
  blob_append(&gzip.out, aTrailer, 8);
  *pOut = gzip.out;
  blob_zero(&gzip.out);
  gzip.eState = 0;
}

/*
** COMMAND: test-gzip
**
** Usage: %fossil test-gzip FILENAME
**
** Compress a file using gzip.
*/
void test_gzip_cmd(void){
  Blob b;
  char *zOut;
  if( g.argc!=3 ) usage("FILENAME");
  sqlite3_open(":memory:", &g.db);
  gzip_begin(-1);
  blob_read_from_file(&b, g.argv[2], ExtFILE);
  zOut = mprintf("%s.gz", g.argv[2]);
  gzip_step(blob_buffer(&b), blob_size(&b));
  blob_reset(&b);
  gzip_finish(&b);
  blob_write_to_file(&b, zOut);
  blob_reset(&b);
  fossil_free(zOut);
}
Added src/hbmenu.js.



































































































































































































































































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/*
** Originally: Copyright © 2018 Warren Young
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Contact: wyoung on the Fossil forum, https://fossil-scm.org/forum/
** Modified by others.
**
*******************************************************************************
**
** This file contains the JS code used to implement the expanding hamburger
** menu on various skins.
**
** This was original the "js.txt" file for the default skin.  It was subsequently
** moved into src/hbmenu.js so that it could be more easily reused by other skins
** using the "builtin_request_js" TH1 command.
**
** Operation:
**
** This script expects the HTML to contain two elements:
**
**      <a id="hbbtn">       <--- The hamburger menu button
**      <nav id="hbdrop">    <--- Container for the hamburger menu
**      
** Bindings are made on hbbtn so that when it is clicked, the following
** happens:
**
**    1.  An XHR is made to /sitemap?popup to fetch the HTML for the
**        popup menu.
**
**    2.  The HTML for the popup is inserted into hddrop.
**
**    3.  The hddrop container is made visible.
**
** CSS rules are also needed to cause the hddrop to be initially invisible,
** and to correctly style and position the hddrop container.
*/
(function() {
  var hbButton = document.getElementById("hbbtn");
  if (!hbButton) return;   // no hamburger button
  if (!document.addEventListener) return; // Incompatible browser
  var panel = document.getElementById("hbdrop");
  if (!panel) return;   // site admin might've nuked it
  if (!panel.style) return;  // shouldn't happen, but be sure
  var panelBorder = panel.style.border;
  var panelInitialized = false;   // reset if browser window is resized
  var panelResetBorderTimerID = 0;   // used to cancel post-animation tasks

  // Disable animation if this browser doesn't support CSS transitions.
  //
  // We need this ugly calling form for old browsers that don't allow
  // panel.style.hasOwnProperty('transition'); catering to old browsers
  // is the whole point here.
  var animate = panel.style.transition !== null && (typeof(panel.style.transition) == "string");

  // The duration of the animation can be overridden from the default skin
  // header.txt by setting the "data-anim-ms" attribute of the panel.
  var animMS = panel.getAttribute("data-anim-ms");
  if (animMS) {           // not null or empty string, parse it
    animMS = parseInt(animMS);
    if (isNaN(animMS) || animMS == 0)
      animate = false;    // disable animation if non-numeric or zero
    else if (animMS < 0)
      animMS = 400;       // set default animation duration if negative
  }
  else                    // attribute is null or empty string, use default
    animMS = 400;

  // Calculate panel height despite its being hidden at call time.
  // Based on https://stackoverflow.com/a/29047447/142454
  var panelHeight;  // computed on first panel display
  function calculatePanelHeight() {

    // Clear the max-height CSS property in case the panel size is recalculated
    // after the browser window was resized.
    panel.style.maxHeight = '';

    // Get initial panel styles so we can restore them below.
    var es   = window.getComputedStyle(panel),
        edis = es.display,
        epos = es.position,
        evis = es.visibility;

    // Restyle the panel so we can measure its height while invisible.
    panel.style.visibility = 'hidden';
    panel.style.position   = 'absolute';
    panel.style.display    = 'block';
    panelHeight = panel.offsetHeight + 'px';

    // Revert styles now that job is done.
    panel.style.display    = edis;
    panel.style.position   = epos;
    panel.style.visibility = evis;
  }

  // Show the panel by changing the panel height, which kicks off the
  // slide-open/closed transition set up in the XHR onload handler.
  //
  // Schedule the change for a near-future time in case this is the
  // first call, where the div was initially invisible.  If we were
  // to change the panel's visibility and height at the same time
  // instead, that would prevent the browser from seeing the height
  // change as a state transition, so it'd skip the CSS transition:
  //
  // https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions#JavaScript_examples
  function showPanel() {
    // Cancel the timer to remove the panel border after the closing animation,
    // otherwise double-clicking the hamburger button with the panel opened will
    // remove the borders from the (closed and immediately reopened) panel.
    if (panelResetBorderTimerID) {
      clearTimeout(panelResetBorderTimerID);
      panelResetBorderTimerID = 0;
    }
    if (animate) {
      if (!panelInitialized) {
        panelInitialized = true;
        // Set up a CSS transition to animate the panel open and
        // closed.  Only needs to be done once per page load.
        // Based on https://stackoverflow.com/a/29047447/142454
        calculatePanelHeight();
        panel.style.transition = 'max-height ' + animMS +
            'ms ease-in-out';
        panel.style.overflowY  = 'hidden';
        panel.style.maxHeight  = '0';
      }
      setTimeout(function() {
        panel.style.maxHeight = panelHeight;
        panel.style.border    = panelBorder;
      }, 40);   // 25ms is insufficient with Firefox 62
    }
    panel.style.display = 'block';
    document.addEventListener('keydown',panelKeydown,/* useCapture == */true);
    document.addEventListener('click',panelClick,false);
  }

  var panelKeydown = function(event) {
    var key = event.which || event.keyCode;
    if (key == 27) {
      event.stopPropagation();   // ignore other keydown handlers
      panelToggle(true);
    }
  };

  var panelClick = function(event) {
    if (!panel.contains(event.target)) {
      // Call event.preventDefault() to have clicks outside the opened panel
      // just close the panel, and swallow clicks on links or form elements.
      //event.preventDefault();
      panelToggle(true);
    }
  };

  // Return true if the panel is showing.
  function panelShowing() {
    if (animate) {
      return panel.style.maxHeight == panelHeight;
    }
    else {
      return panel.style.display == 'block';
    }
  }

  // Check if the specified HTML element has any child elements. Note that plain
  // text nodes, comments, and any spaces (presentational or not) are ignored.
  function hasChildren(element) {
    var childElement = element.firstChild;
    while (childElement) {
      if (childElement.nodeType == 1) // Node.ELEMENT_NODE == 1
        return true;
      childElement = childElement.nextSibling;
    }
    return false;
  }

  // Reset the state of the panel to uninitialized if the browser window is
  // resized, so the dimensions are recalculated the next time it's opened.
  window.addEventListener('resize',function(event) {
    panelInitialized = false;
  },false);

  // Click handler for the hamburger button.
  hbButton.addEventListener('click',function(event) {
    // Break the event handler chain, or the handler for document → click
    // (about to be installed) may already be triggered by the current event.
    event.stopPropagation();
    event.preventDefault();  // prevent browser from acting on <a> click
    panelToggle(false);
  },false);

  function panelToggle(suppressAnimation) {
    if (panelShowing()) {
      document.removeEventListener('keydown',panelKeydown,/* useCapture == */true);
      document.removeEventListener('click',panelClick,false);
      // Transition back to hidden state.
      if (animate) {
        if (suppressAnimation) {
          var transition = panel.style.transition;
          panel.style.transition = '';
          panel.style.maxHeight = '0';
          panel.style.border = 'none';
          setTimeout(function() {
            // Make sure CSS transition won't take effect now, so restore it
            // asynchronously. Outer variable 'transition' still valid here.
            panel.style.transition = transition;
          }, 40);   // 25ms is insufficient with Firefox 62
        }
        else {
          panel.style.maxHeight = '0';
          panelResetBorderTimerID = setTimeout(function() {
            // Browsers show a 1px high border line when maxHeight == 0,
            // our "hidden" state, so hide the borders in that state, too.
            panel.style.border = 'none';
            panelResetBorderTimerID = 0;   // clear ID of completed timer
          }, animMS);
        }
      }
      else {
        panel.style.display = 'none';
      }
    }
    else {
      if (!hasChildren(panel)) {
        // Only get the sitemap once per page load: it isn't likely to
        // change on us.
        var xhr = new XMLHttpRequest();
        xhr.onload = function() {
          var doc = xhr.responseXML;
          if (doc) {
            var sm = doc.querySelector("ul#sitemap");
            if (sm && xhr.status == 200) {
              // Got sitemap.  Insert it into the drop-down panel.
              panel.innerHTML = sm.outerHTML;
              // Display the panel
              showPanel();
            }
          }
          // else, can't parse response as HTML or XML
        }
        // The extra "popup" query parameter is a single to the server that the
        // header and footer boiler-plate can be omitted.  The boiler-plate is
        // ignored if it is included.  The popup query parameter is just an
        // optimization.
        var url = hbButton.href + (hbButton.href.includes("?")?"&popup":"?popup")
        xhr.open("GET", url);
        xhr.responseType = "document";
        xhr.send();
      }
      else {
        showPanel();   // just show what we built above
      }
    }
  }
})();
Added src/hname.c.




























































































































































































































































































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/*
** Copyright (c) 2017 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains generic code for dealing with hashes used for
** naming artifacts.  Specific hash algorithms are implemented separately
** (for example in sha1.c and sha3.c).  This file contains the generic
** interface logic.
**
** "hname" is intended to be an abbreviation of "hash name".
*/
#include "config.h"
#include "hname.h"


#if INTERFACE
/*
** Code numbers for the allowed hash algorithms.
*/
#define HNAME_ERROR  0      /* Not a valid hash */
#define HNAME_SHA1   1      /* SHA1 */
#define HNAME_K256   2      /* SHA3-256 */

/*
** Minimum and maximum lengths for a hash value when hex encoded.
*/
#define HNAME_MIN  40     /* Length for SHA1 */
#define HNAME_MAX  64     /* Length for SHA3-256 */

/*
** Hash lengths for the various algorithms
*/
#define HNAME_LEN_SHA1   40
#define HNAME_LEN_K256   64

/*
** The number of distinct hash algorithms:
*/
#define HNAME_COUNT 2     /* Just SHA1 and SHA3-256. Let's keep it that way! */

/*
** Hash naming policies
*/
#define HPOLICY_SHA1           0      /* Use SHA1 hashes */
#define HPOLICY_AUTO           1      /* SHA1 but auto-promote to SHA3 */
#define HPOLICY_SHA3           2      /* Use SHA3 hashes */
#define HPOLICY_SHA3_ONLY      3      /* Use SHA3 hashes exclusively */
#define HPOLICY_SHUN_SHA1      4      /* Shun all SHA1 objects */

#endif /* INTERFACE */

/*
** Return a human-readable name for the hash algorithm given a hash with
** a length of nHash hexadecimal digits.
*/
const char *hname_alg(int nHash){
  if( nHash==HNAME_LEN_SHA1 ) return "SHA1";
  if( nHash==HNAME_LEN_K256 ) return "SHA3-256";
  return "?";
}

/*
** Return the integer hash algorithm code number (ex: HNAME_K256) for
** the hash string provided.  Or return HNAME_ERROR (0) if the input string
** is not a valid artifact hash string.
*/
int hname_validate(const char *zHash, int nHash){
  int id;
  switch( nHash ){
    case HNAME_LEN_SHA1:   id = HNAME_SHA1;  break;
    case HNAME_LEN_K256:   id = HNAME_K256;  break;
    default:               return HNAME_ERROR;
  }
  if( !validate16(zHash, nHash) ) return HNAME_ERROR;
  return id;
}

/*
** Verify that zHash is a valid hash for the content in pContent.
** Return true if the hash is correct.  Return false if the content
** does not match the hash.
**
** Actually, the returned value is one of the hash algorithm constants
** corresponding to the hash that matched if the hash is correct.
** (Examples: HNAME_SHA1 or HNAME_K256).  And the return is HNAME_ERROR
** if the hash does not match.
*/
int hname_verify_hash(Blob *pContent, const char *zHash, int nHash){
  int id = HNAME_ERROR;
  switch( nHash ){
    case HNAME_LEN_SHA1: {
      Blob hash;
      sha1sum_blob(pContent, &hash);
      if( memcmp(blob_buffer(&hash),zHash,HNAME_LEN_SHA1)==0 ) id = HNAME_SHA1;
      blob_reset(&hash);
      break;
    }
    case HNAME_LEN_K256: {
      sha3sum_init(256);
      sha3sum_step_blob(pContent);
      if( memcmp(sha3sum_finish(0),zHash,64)==0 ) id = HNAME_K256;
      break;
    }
  }
  return id;
}

/*
** Verify that zHash is a valid hash for the content of a file on
** disk named zFile.
**
** Return true if the hash is correct.  Return false if the content
** does not match the hash.
**
** Actually, the returned value is one of the hash algorithm constants
** corresponding to the hash that matched if the hash is correct.
** (Examples: HNAME_SHA1 or HNAME_K256).  And the return is HNAME_ERROR
** if the hash does not match.
*/
int hname_verify_file_hash(const char *zFile, const char *zHash, int nHash){
  int id = HNAME_ERROR;
  switch( nHash ){
    case HNAME_LEN_SHA1: {
      Blob hash;
      if( sha1sum_file(zFile, RepoFILE, &hash) ) break;
      if( memcmp(blob_buffer(&hash),zHash,HNAME_LEN_SHA1)==0 ) id = HNAME_SHA1;
      blob_reset(&hash);
      break;
    }
    case HNAME_LEN_K256: {
      Blob hash;
      if( sha3sum_file(zFile, RepoFILE, 256, &hash) ) break;
      if( memcmp(blob_buffer(&hash),zHash,64)==0 ) id = HNAME_LEN_K256;
      blob_reset(&hash);
      break;
    }
  }
  return id;
}

/*
** Compute a hash on blob pContent.  Write the hash into blob pHashOut.
** This routine assumes that pHashOut is uninitialized.
**
** The preferred hash is used for iHType==0 and the alternative hash is
** used if iHType==1.  (The interface is designed to accommodate more than
** just two hashes, but HNAME_COUNT is currently fixed at 2.)
**
** Depending on the hash policy, the alternative hash may be disallowed.
** If the alterative hash is disallowed, the routine returns 0.  This
** routine returns 1 if iHType>0 and the alternative hash is allowed,
** and it always returns 1 when iHType==0.
**
** Alternative hash is disallowed for all hash policies except auto,
** sha1 and sha3.
*/
int hname_hash(const Blob *pContent, unsigned int iHType, Blob *pHashOut){
  assert( iHType==0 || iHType==1 );
  if( iHType==1 ){
    switch( g.eHashPolicy ){
      case HPOLICY_AUTO:
      case HPOLICY_SHA1:
        sha3sum_blob(pContent, 256, pHashOut);
        return 1;
      case HPOLICY_SHA3:
        sha1sum_blob(pContent, pHashOut);
        return 1;
    }
  }
  if( iHType==0 ){
    switch( g.eHashPolicy ){
      case HPOLICY_SHA1:
      case HPOLICY_AUTO:
        sha1sum_blob(pContent, pHashOut);
        return 1;
      case HPOLICY_SHA3:
      case HPOLICY_SHA3_ONLY:
      case HPOLICY_SHUN_SHA1:
        sha3sum_blob(pContent, 256, pHashOut);
        return 1;
    }
  }
  blob_init(pHashOut, 0, 0);
  return 0;
}

/*
** Return the default hash policy for repositories that do not currently
** have an assigned hash policy.
**
** Make the default HPOLICY_AUTO if there are SHA1 artficates but no SHA3
** artifacts in the repository.  Make the default HPOLICY_SHA3 if there
** are one or more SHA3 artifacts or if the repository is initially empty.
*/
int hname_default_policy(void){
  if( db_exists("SELECT 1 FROM blob WHERE length(uuid)>40")
   || !db_exists("SELECT 1 FROM blob WHERE length(uuid)==40")
  ){
    return HPOLICY_SHA3;
  }else{
    return HPOLICY_AUTO;
  }
}

/*
** Names of the hash policies.
*/
static const char *const azPolicy[] = {
  "sha1", "auto", "sha3", "sha3-only", "shun-sha1"
};

/* Return the name of the current hash policy.
*/
const char *hpolicy_name(void){
  return azPolicy[g.eHashPolicy];
}


/*
** COMMAND: hash-policy*
**
** Usage: fossil hash-policy ?NEW-POLICY?
**
** Query or set the hash policy for the current repository.  Available hash
** policies are as follows:
**
**   sha1              New artifact names are created using SHA1
**
**   auto              New artifact names are created using SHA1, but
**                     automatically change the policy to "sha3" when
**                     any SHA3 artifact enters the repository.
**
**   sha3              New artifact names are created using SHA3, but
**                     older artifacts with SHA1 names may be reused.
**
**   sha3-only         Use only SHA3 artifact names.  Do not reuse legacy
**                     SHA1 names.
**
**   shun-sha1         Shun any SHA1 artifacts received by sync operations
**                     other than clones.  Older legacy SHA1 artifacts are
**                     allowed during a clone.
**
** The default hash policy for existing repositories is "auto", which will
** immediately promote to "sha3" if the repository contains one or more
** artifacts with SHA3 names.  The default hash policy for new repositories
** is "shun-sha1".
*/
void hash_policy_command(void){
  int i;
  db_find_and_open_repository(0, 0);
  if( g.argc!=2 && g.argc!=3 ) usage("?NEW-POLICY?");
  if( g.argc==2 ){
    fossil_print("%s\n", azPolicy[g.eHashPolicy]);
    return;
  }
  for(i=HPOLICY_SHA1; i<=HPOLICY_SHUN_SHA1; i++){
    if( fossil_strcmp(g.argv[2],azPolicy[i])==0 ){
      if( i==HPOLICY_AUTO
       && db_exists("SELECT 1 FROM blob WHERE length(uuid)>40")
      ){
        i = HPOLICY_SHA3;
      }
      g.eHashPolicy = i;
      db_set_int("hash-policy", i, 0);
      fossil_print("%s\n", azPolicy[i]);
      return;
    }
  }
  fossil_fatal("unknown hash policy \"%s\" - should be one of: sha1 auto"
               " sha3 sha3-only shun-sha1", g.argv[2]);
}
Added src/hook.c.


































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file implements "hooks" - external programs that can be run
** when various events occur on a Fossil repository.
**
** Hooks are stored in the following CONFIG variables:
**
**     hooks               A JSON-array of JSON objects.  Each object describes
**                         a single hook.  Example:
**                         {
**                            "type": "after-receive",  // type of hook
**                            "cmd": "command-to-run",  // command to run
**                            "seq": 50                 // run in this order
**                         }
**
**     hook-last-rcvid     The last rcvid for which post-receive hooks were
**                         run.
**
**     hook-embargo        Do not run hooks again before this julianday.
**
** For "after-receive" hooks, a list of the received artifacts is sent
** into the command via standard input.  Each line of input begins with
** the hash of the artifact and continues with a description of the
** interpretation of the artifact.
*/
#include "config.h"
#include "hook.h"

/*
** SETTING: hooks sensitive width=40 block-text
** The "hooks" setting contains JSON that describes all defined
** hooks.  The value is an array of objects.  Each object describes
** a single hook.  Example:
**
**
**    {
**    "type": "after-receive",  // type of hook
**    "cmd": "command-to-run",  // command to run
**    "seq": 50                 // run in this order
**    }
*/
/*
** List of valid hook types:
*/
static const char *azType[] = {
   "after-receive",
   "before-commit",
   "disabled",
};

/*
** Return true if zType is a valid hook type.
*/
static int is_valid_hook_type(const char *zType){
  int i;
  for(i=0; i<count(azType); i++){
    if( strcmp(azType[i],zType)==0  ) return 1;
  }
  return 0;
}

/*
** Throw an error if zType is not a valid hook type
*/
static void validate_type(const char *zType){
  int i;
  char *zMsg;
  if( is_valid_hook_type(zType) ) return;
  zMsg = mprintf("\"%s\" is not a valid hook type - should be one of:", zType);
  for(i=0; i<count(azType); i++){
    zMsg = mprintf("%z %s", zMsg, azType[i]);
  }
  fossil_fatal("%s", zMsg);
}

/*
** Translate a hook command string into its executable format by
** converting every %-substitutions as follows:
**
**     %F     ->    Name of the fossil executable
**     %R     ->    Name of the repository
**     %A     ->    Auxiliary information filename (might be empty string)
**
** The returned string is obtained from fossil_malloc() and should
** be freed by the caller.
*/
static char *hook_subst(
  const char *zCmd,
  const char *zAuxFilename   /* Name of auxiliary information file */
){
  Blob r;
  int i;
  blob_init(&r, 0, 0);
  if( zCmd==0 ) return 0;
  while( zCmd[0] ){
    for(i=0; zCmd[i] && zCmd[i]!='%'; i++){}
    blob_append(&r, zCmd, i);
    if( zCmd[i]==0 ) break;
    if( zCmd[i+1]=='F' ){
      blob_append(&r, g.nameOfExe, -1);
      zCmd += i+2;
    }else if( zCmd[i+1]=='R' ){
      blob_append(&r, g.zRepositoryName, -1);
      zCmd += i+2;
    }else if( zCmd[i+1]=='A' ){
      if( zAuxFilename ) blob_append(&r, zAuxFilename, -1);
      zCmd += i+2;
    }else{
      blob_append(&r, zCmd+i, 1);
      zCmd += i+1;
    }
  }
  blob_str(&r);
  return r.aData;
}

/*
** Record the fact that new artifacts are expected within N seconds
** (N is normally a small number) and so post-receive hooks should
** probably be deferred until after the new artifacts arrive.
**
** If N==0, then there is no expectation of new artifacts arriving
** soon and so post-receive hooks can be run without delay.
*/
void hook_expecting_more_artifacts(int N){
  if( !db_is_writeable("repository") ){
    /* No-op */
  }else if( N>0 ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "REPLACE INTO config(name,value,mtime)"
      "VALUES('hook-embargo',now()+%d,now())",
      N
    );
    db_protect_pop();
  }else{
    db_unset("hook-embargo",0);
  }
}


/*
** Fill the Blob pOut with text that describes all artifacts
** received after zBaseRcvid up to and including zNewRcvid.
** Except, never include more than one days worth of changes.
**
** If zBaseRcvid is NULL, then use the "hook-last-rcvid" setting.
** If zNewRcvid is NULL, use the last available rcvid.
*/
void hook_changes(Blob *pOut, const char *zBaseRcvid, const char *zNewRcvid){
  char *zWhere;
  Stmt q;
  if( zBaseRcvid==0 ){
    zBaseRcvid = db_get("hook-last-rcvid","0");
  }
  if( zNewRcvid==0 ){
    zNewRcvid = db_text("0","SELECT max(rcvid) FROM rcvfrom");
  }

  /* Adjust the baseline rcvid to omit change that are more than
  ** 24 hours older than the most recent change.
  */
  zBaseRcvid = db_text(0,
     "SELECT min(rcvid) FROM rcvfrom"
     " WHERE rcvid>=%d"
     "   AND mtime>=(SELECT mtime FROM rcvfrom WHERE rcvid=%d)-1.0",
     atoi(zBaseRcvid), atoi(zNewRcvid)
  );

  zWhere = mprintf("IN (SELECT rid FROM blob WHERE rcvid>%d AND rcvid<=%d)",
                   atoi(zBaseRcvid), atoi(zNewRcvid));
  describe_artifacts(zWhere);
  fossil_free(zWhere);
  db_prepare(&q, "SELECT uuid, summary FROM description");
  while( db_step(&q)==SQLITE_ROW ){
    blob_appendf(pOut, "%s %s\n", db_column_text(&q,0), db_column_text(&q,1));
  }
  db_finalize(&q);
}

/*
** COMMAND: hook*
**
** Usage: %fossil hook COMMAND ...
**
** Commands include:
**
** >  fossil hook add --command COMMAND --type TYPE --sequence NUMBER
**
**        Create a new hook.  The --command and --type arguments are
**        required.  --sequence is optional.
**
** >  fossil hook delete ID ...
**
**        Delete one or more hooks by their IDs.  ID can be "all"
**        to delete all hooks.  Caution:  There is no "undo" for
**        this operation.  Deleted hooks are permanently lost.
**
** >  fossil hook edit --command COMMAND --type TYPE --sequence NUMBER ID ...
**
**        Make changes to one or more existing hooks.  The ID argument
**        is either a hook-id, or a list of hook-ids, or the keyword
**        "all".  For example, to disable hook number 2, use:
**
**            fossil hook edit --type disabled 2
**
** >  fossil hook list
**
**        Show all current hooks
**
** >  fossil hook status
**
**        Print the values of CONFIG table entries that are relevant to
**        hook processing.  Used for debugging.
**
** >  fossil hook test [OPTIONS] ID
**
**        Run the hook script given by ID for testing purposes.
**        Options:
**
**            --dry-run          Print the script on stdout rather than run it
**            --base-rcvid N     Pretend that the hook-last-rcvid value is N
**            --new-rcvid M      Pretend that the last rcvid valud is M
**            --aux-file NAME    NAME is substituted for %A in the script
**
**        The --base-rcvid and --new-rcvid options are silently ignored if
**        the hook type is not "after-receive".  The default values for
**        --base-rcvid and --new-rcvid cause the last receive to be processed.
*/
void hook_cmd(void){
  const char *zCmd;
  int nCmd;
  db_find_and_open_repository(0, 0);
  if( g.argc<3 ){
    usage("SUBCOMMAND ...");
  }
  zCmd = g.argv[2];
  nCmd = (int)strlen(zCmd);
  if( strncmp(zCmd, "add", nCmd)==0 ){
    const char *zCmd = find_option("command",0,1);
    const char *zType = find_option("type",0,1);
    const char *zSeq = find_option("sequence",0,1);
    int nSeq;
    verify_all_options();
    if( zCmd==0 || zType==0 ){
      fossil_fatal("the --command and --type options are required");
    }
    validate_type(zType);
    nSeq = zSeq ? atoi(zSeq) : 10;
    db_begin_write();
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "INSERT OR IGNORE INTO config(name,value) VALUES('hooks','[]');\n"
       "UPDATE config"
       "  SET value=json_insert("
       "     CASE WHEN json_valid(value) THEN value ELSE '[]' END,'$[#]',"
       "     json_object('cmd',%Q,'type',%Q,'seq',%d)),"
       "      mtime=now()"
       " WHERE name='hooks';",
       zCmd, zType, nSeq
    );
    db_protect_pop();
    db_commit_transaction();
  }else
  if( strncmp(zCmd, "edit", nCmd)==0 ){
    const char *zCmd = find_option("command",0,1);
    const char *zType = find_option("type",0,1);
    const char *zSeq = find_option("sequence",0,1);
    int nSeq;
    int i;
    verify_all_options();
    if( zCmd==0 && zType==0 && zSeq==0 ){
      fossil_fatal("at least one of --command, --type, or --sequence"
                   " is required");
    }
    if( zType ) validate_type(zType);
    nSeq = zSeq ? atoi(zSeq) : 10;
    if( g.argc<4 ) usage("delete ID ...");
    db_begin_write();
    for(i=3; i<g.argc; i++){
      Blob sql;
      int id;
      if( sqlite3_strglob("*[^0-9]*", g.argv[i])==0 ){
        fossil_fatal("not a valid ID: \"%s\"", g.argv[i]);
      }
      id = atoi(g.argv[i]);
      blob_init(&sql, 0, 0);
      blob_append_sql(&sql, "UPDATE config SET mtime=now(), value="
        "json_replace(CASE WHEN json_valid(value) THEN value ELSE '[]' END");
      if( zCmd ){
        blob_append_sql(&sql, ",'$[%d].cmd',%Q", id, zCmd);
      }
      if( zType ){
        blob_append_sql(&sql, ",'$[%d].type',%Q", id, zType);
      }
      if( zSeq ){
        blob_append_sql(&sql, ",'$[%d].seq',%d", id, nSeq);
      }
      blob_append_sql(&sql,") WHERE name='hooks';");
      db_unprotect(PROTECT_CONFIG);
      db_multi_exec("%s", blob_sql_text(&sql));
      db_protect_pop();
      blob_reset(&sql);
    }
    db_commit_transaction();
  }else
  if( strncmp(zCmd, "delete", nCmd)==0 ){
    int i;
    verify_all_options();
    if( g.argc<4 ) usage("delete ID ...");
    db_begin_write();
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "INSERT OR IGNORE INTO config(name,value) VALUES('hooks','[]');\n"
    );
    for(i=3; i<g.argc; i++){
      const char *zId = g.argv[i];
      if( strcmp(zId,"all")==0 ){
        db_unprotect(PROTECT_ALL);
        db_set("hooks","[]", 0);
        db_protect_pop();
        break;
      }
      if( sqlite3_strglob("*[^0-9]*", g.argv[i])==0 ){
        fossil_fatal("not a valid ID: \"%s\"", g.argv[i]);
      }
      db_multi_exec(
        "UPDATE config"
        "  SET value=json_remove("
        "     CASE WHEN json_valid(value) THEN value ELSE '[]' END,'$[%d]'),"
        "      mtime=now()"
        " WHERE name='hooks';",
        atoi(zId)
      );
    }
    db_protect_pop();
    db_commit_transaction();
  }else
  if( strncmp(zCmd, "list", nCmd)==0 ){
    Stmt q;
    int n = 0;
    verify_all_options();
    db_prepare(&q,
      "SELECT jx.key,"
      "       jx.value->>'seq',"
      "       jx.value->>'cmd',"
      "       jx.value->>'type'"
      "  FROM config, json_each(config.value) AS jx"
      " WHERE config.name='hooks' AND json_valid(config.value)"
    );
    while( db_step(&q)==SQLITE_ROW ){
      if( n++ ) fossil_print("\n");
      fossil_print("%3d: type = %s\n",
        db_column_int(&q,0), db_column_text(&q,3));
      fossil_print("     command = %s\n", db_column_text(&q,2));
      fossil_print("     sequence = %d\n", db_column_int(&q,1));
    }
    db_finalize(&q);
  }else
  if( strncmp(zCmd, "status", nCmd)==0 ){
    Stmt q;
    db_prepare(&q,
      "SELECT name, quote(value) FROM config WHERE name IN"
      "('hooks','hook-embargo','hook-last-rcvid') ORDER BY name"
    );
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%s: %s\n", db_column_text(&q,0), db_column_text(&q,1));
    }
    db_finalize(&q);
  }else
  if( strncmp(zCmd, "test", nCmd)==0 ){
    Stmt q;
    int id;
    int bDryRun = find_option("dry-run", "n", 0)!=0;
    const char *zOrigRcvid = find_option("base-rcvid",0,1);
    const char *zNewRcvid = find_option("new-rcvid",0,1);
    const char *zAuxFilename = find_option("aux-file",0,1);
    verify_all_options();
    if( g.argc<4 ) usage("test ID");
    id = atoi(g.argv[3]);
    if( zOrigRcvid==0 ){
      zOrigRcvid = db_text(0, "SELECT max(rcvid)-1 FROM rcvfrom");
    }
    db_prepare(&q,
      "SELECT value->>'$[%d].cmd', value->>'$[%d].type'=='after-receive'"
      "  FROM config"
      " WHERE name='hooks' AND json_valid(value)",
      id, id
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zCmd = db_column_text(&q,0);
      char *zCmd2 = hook_subst(zCmd, zAuxFilename);
      int needOut = db_column_int(&q,1);
      Blob out;
      if( zCmd2==0 ) continue;
      blob_init(&out,0,0);
      if( needOut ) hook_changes(&out, zOrigRcvid, zNewRcvid);
      if( bDryRun ){
        fossil_print("%s\n", zCmd2);
        if( needOut ){
          fossil_print("%s", blob_str(&out));
        }
      }else if( needOut ){
        int fdFromChild;
        FILE *toChild;
        int pidChild;
        if( popen2(zCmd2, &fdFromChild, &toChild, &pidChild, 0)==0 ){
          if( toChild ){
            fwrite(blob_buffer(&out),1,blob_size(&out),toChild);
          }
          pclose2(fdFromChild, toChild, pidChild);
        }
      }else{
        fossil_system(zCmd2);
      }
      fossil_free(zCmd2);
      blob_reset(&out);
    }
    db_finalize(&q);
  }else
  {
     fossil_fatal("unknown command \"%s\" - should be one of: "
                  "add delete edit list test", zCmd);
  }
}

/*
** The backoffice calls this routine to run the after-receive hooks.
*/
int hook_backoffice(void){
  Stmt q;
  const char *zLastRcvid = 0;
  char *zNewRcvid = 0;
  Blob chng;
  int cnt = 0;
  db_begin_write();
  if( !db_exists("SELECT 1 FROM config WHERE name='hooks'") ){
    goto hook_backoffice_done;  /* No hooks */
  }
  if( db_int(0, "SELECT now()<value+0 FROM config"
                " WHERE name='hook-embargo'") ){
    goto hook_backoffice_done;  /* Within the embargo window */
  }
  zLastRcvid = db_get("hook-last-rcvid","0");
  zNewRcvid = db_text("0","SELECT max(rcvid) FROM rcvfrom");
  if( atoi(zLastRcvid)>=atoi(zNewRcvid) ){
    goto hook_backoffice_done;  /* no new content */
  }
  blob_init(&chng, 0, 0);
  db_prepare(&q,
      "SELECT jx.value->>'cmd'"
      "  FROM config, json_each(config.value) AS jx"
      " WHERE config.name='hooks' AND json_valid(config.value)"
      "   AND jx.value->>'type'='after-receive'"
      " ORDER BY jx.value->>'seq';"
  );
  while( db_step(&q)==SQLITE_ROW ){
    char *zCmd;
    int fdFromChild;
    FILE *toChild;
    int childPid;
    if( cnt==0 ){
      hook_changes(&chng, zLastRcvid, 0);
    }
    zCmd = hook_subst(db_column_text(&q,0), 0);
    if( popen2(zCmd, &fdFromChild, &toChild, &childPid, 0)==0 ){
      if( toChild ){
        fwrite(blob_buffer(&chng),1,blob_size(&chng),toChild);
      }
      pclose2(fdFromChild, toChild, childPid);
    }
    fossil_free(zCmd);
    cnt++;
  }
  db_finalize(&q);
  db_set("hook-last-rcvid", zNewRcvid, 0);
  blob_reset(&chng);
hook_backoffice_done:
  db_commit_transaction();
  return cnt;
}

/*
** Return true if one or more hooks of type zType exit.
*/
int hook_exists(const char *zType){
  return db_exists(
      "SELECT 1"
      "  FROM config, json_each(config.value) AS jx"
      " WHERE config.name='hooks' AND json_valid(config.value)"
      "   AND jx.value->>'type'=%Q;",
      zType
  );
}

/*
** Run all hooks of type zType.  Use zAuxFile as the auxiliary information
** file.
**
** If any hook returns non-zero, then stop running and return non-zero.
** Return zero only if all hooks return zero.
*/
int hook_run(const char *zType, const char *zAuxFile, int traceFlag){
  Stmt q;
  int rc = 0;
  if( !db_exists("SELECT 1 FROM config WHERE name='hooks'") ){
    return 0;
  }
  db_prepare(&q,
      "SELECT jx.value->>'cmd' "
      "  FROM config, json_each(config.value) AS jx"
      " WHERE config.name='hooks' AND json_valid(config.value)"
      "   AND jx.value->>'type'==%Q"
      " ORDER BY jx.value->'seq';",
      zType
  );
  while( db_step(&q)==SQLITE_ROW ){
    char *zCmd;
    zCmd = hook_subst(db_column_text(&q,0), zAuxFile);
    if( traceFlag ){
      fossil_print("%s hook: %s\n", zType, zCmd);
    }
    rc = fossil_system(zCmd);
    fossil_free(zCmd);
    if( rc ){
      break;
    }
  }
  db_finalize(&q);
  return rc;
}
Added src/href.js.































































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/* As an anti-robot defense, <a> elements are initially coded with the
** href= set to the honeypot, and <form> elements are initialized with
** action= set to the login page.  The real values for href= and action=
** are held in data-href= and data-action=.  The following code moves
** data-href= into href= and data-action= into action= for all
** <a> and <form> elements, after delay and maybe also after mouse
** movement is seen.
**
** Before sourcing this script, create a separate <script> element
** (with type='application/json' to avoid Content Security Policy issues)
** containing:
**
**     {"delay":MILLISECONDS, "mouseover":BOOLEAN}
**
** The <script> must have an id='href-data'.  DELAY is the number 
** milliseconds delay prior to populating href= and action=.  If the
** mouseover boolean is true, then the href= rewrite is further delayed
** until the first mousedown event that occurs after the timer expires.
*/
var antiRobot = 0;
function antiRobotGo(){
  if( antiRobot!=3 ) return;
  antiRobot = 7;
  var anchors = document.getElementsByTagName("a");
  for(var i=0; i<anchors.length; i++){
    var j = anchors[i];
    if(j.hasAttribute("data-href")) j.href=j.getAttribute("data-href");
  }
  var forms = document.getElementsByTagName("form");
  for(var i=0; i<forms.length; i++){
    var j = forms[i];
    if(j.hasAttribute("data-action")) j.action=j.getAttribute("data-action");
  }
}
function antiRobotDefense(){
  var x = document.getElementById("href-data");
  var jx = x.textContent || x.innerText;
  var g = JSON.parse(jx);
  if( g.mouseover ){
    document.body.onmousedown=function(){
      antiRobot |= 2;
      antiRobotGo();
      document.body.onmousedown=null;
    }
    document.body.onmousemove=function(){
      antiRobot |= 2;
      antiRobotGo();
      document.body.onmousemove=null;
    }
  }else{
    antiRobot |= 2;
  }
  if( g.delay>0 ){
    setTimeout(function(){
      antiRobot |= 1;
      antiRobotGo();
    }, g.delay)
  }else{
    antiRobot |= 1;
  }
  antiRobotGo();
}
antiRobotDefense();
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**
** This file contains code that implements the client-side HTTP protocol
*/
#include "config.h"
#include "http.h"
#include <assert.h>

#ifdef _WIN32
#include <io.h>
#endif


#if INTERFACE
/*
** Bits of the mHttpFlags parameter to http_exchange()
*/
#define HTTP_USE_LOGIN   0x00001     /* Add a login card to the sync message */
#define HTTP_GENERIC     0x00002     /* Generic HTTP request */
#define HTTP_VERBOSE     0x00004     /* HTTP status messages */
#define HTTP_QUIET       0x00008     /* No surplus output */
#define HTTP_NOCOMPRESS  0x00010     /* Omit payload compression */
#endif

/* Maximum number of HTTP Authorization attempts */
#define MAX_HTTP_AUTH 2

/* Keep track of HTTP Basic Authorization failures */
static int fSeenHttpAuth = 0;

/* The N value for most recent http-request-N.txt and http-reply-N.txt
** trace files.
*/
static int traceCnt = 0;

/*
** Construct the "login" card with the client credentials.
**
**       login LOGIN NONCE SIGNATURE
**
** The LOGIN is the user id of the client.  NONCE is the sha1 checksum
** of all payload that follows the login card.  SIGNATURE is the sha1
** checksum of the nonce followed by the user password.
**
** Write the constructed login card into pLogin.  pLogin is initialized
** by this routine.
*/
static void http_build_login_card(Blob *pPayload, Blob *pLogin){
  Blob nonce;          /* The nonce */
  const char *zLogin;  /* The user login name */
  const char *zPw;     /* The user password */
  Blob pw;             /* The nonce with user password appended */
  Blob sig;            /* The signature field */

  blob_zero(pLogin);
  if( g.urlUser==0 || strcmp(g.urlUser, "anonymous")==0 ){
  if( g.url.user==0 || fossil_strcmp(g.url.user, "anonymous")==0 ){
     return;  /* If no login card for users "nobody" and "anonymous" */
  }
  if( g.url.isSsh ){
     return;  /* If no login card for SSH: */
  }
  blob_zero(&nonce);
  blob_zero(&pw);
  sha1sum_blob(pPayload, &nonce);
  blob_copy(&pw, &nonce);
  zLogin = g.urlUser;
  if( g.urlPasswd ){
    zPw = g.urlPasswd;
  zLogin = g.url.user;
  if( g.url.passwd ){
    zPw = g.url.passwd;
  }else if( g.cgiOutput ){
    /* Password failure while doing a sync from the web interface */
    cgi_printf("*** incorrect or missing password for user %h\n", zLogin);
    zPw = 0;
  }else{
    /* Password failure while doing a sync from the command-line interface */
    url_prompt_for_password();
    zPw = g.urlPasswd;
    zPw = g.url.passwd;
    if( !g.dontKeepUrl ) db_set("last-sync-pw", zPw, 0);
  }

  /* The login card wants the SHA1 hash of the password, so convert the
  ** password to its SHA1 hash it it isn't already a SHA1 hash.
  /* The login card wants the SHA1 hash of the password (as computed by
  ** sha1_shared_secret()), not the original password.  So convert the
  ** password to its SHA1 encoding if it isn't already a SHA1 hash.
  **
  ** Except, if the password begins with "*" then use the characters
  ** after the "*" as a cleartext password.  Put an "*" at the beginning
  ** of the password to trick a newer client to use the cleartext password
  ** protocol required by legacy servers.
  ** We assume that a hexadecimal string of exactly 40 characters is a
  ** SHA1 hash, not an original password.  If a user has a password which
  ** just happens to be a 40-character hex string, then this routine won't
  ** be able to distinguish it from a hash, the translation will not be
  ** performed, and the sync won't work.
  */
  if( zPw && zPw[0] ){
    if( zPw[0]=='*' ){
  if( zPw && zPw[0] && (strlen(zPw)!=40 || !validate16(zPw,40)) ){
    const char *zProjectCode = 0;
    if( g.url.flags & URL_USE_PARENT ){
      zPw++;
      zProjectCode = db_get("parent-project-code", 0);
    }else{
      zProjectCode = db_get("project-code", 0);
    }
      zPw = sha1_shared_secret(zPw, zLogin);
    zPw = sha1_shared_secret(zPw, zLogin, zProjectCode);
    if( g.url.pwConfig!=0 && (g.url.flags & URL_REMEMBER_PW)!=0 ){
      char *x = obscure(zPw);
      db_set(g.url.pwConfig/*works-like:"x"*/, x, 0);
      fossil_free(x);
    }
    fossil_free(g.url.passwd);
    g.url.passwd = fossil_strdup(zPw);
  }

  blob_append(&pw, zPw, -1);
  sha1sum_blob(&pw, &sig);
  blob_appendf(pLogin, "login %F %b %b\n", zLogin, &nonce, &sig);
  blob_reset(&pw);
  blob_reset(&sig);
  blob_reset(&nonce);
}

/*
** Construct an appropriate HTTP request header.  Write the header
** into pHdr.  This routine initializes the pHdr blob.  pPayload is
** the complete payload (including the login card) already compressed.
*/
static void http_build_header(Blob *pPayload, Blob *pHdr){
  int i;
  const char *zSep;
static void http_build_header(
  Blob *pPayload,              /* the payload that will be sent */
  Blob *pHdr,                  /* construct the header here */
  const char *zAltMimetype     /* Alternative mimetype */
){
  int nPayload = pPayload ? blob_size(pPayload) : 0;

  blob_zero(pHdr);
  blob_appendf(pHdr, "%s %s%s HTTP/1.0\r\n",
               nPayload>0 ? "POST" : "GET", g.url.path,
               g.url.path[0]==0 ? "/" : "");
  if( g.url.proxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\r\n", g.url.proxyAuth);
  }
  if( g.zHttpAuth && g.zHttpAuth[0] ){
    const char *zCredentials = g.zHttpAuth;
    char *zEncoded = encode64(zCredentials, -1);
    blob_appendf(pHdr, "Authorization: Basic %s\r\n", zEncoded);
    fossil_free(zEncoded);
  }
  blob_appendf(pHdr, "Host: %s\r\n", g.url.hostname);
  blob_appendf(pHdr, "User-Agent: %s\r\n", get_user_agent());
  if( g.url.isSsh ) blob_appendf(pHdr, "X-Fossil-Transport: SSH\r\n");
  if( nPayload ){
    if( zAltMimetype ){
      blob_appendf(pHdr, "Content-Type: %s\r\n", zAltMimetype);
    }else if( g.fHttpTrace ){
      blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");
    }else{
      blob_appendf(pHdr, "Content-Type: application/x-fossil\r\n");
    }
    blob_appendf(pHdr, "Content-Length: %d\r\n", blob_size(pPayload));
  }
  blob_append(pHdr, "\r\n", 2);
}
  i = strlen(g.urlPath);
  if( i>0 && g.urlPath[i-1]=='/' ){
    zSep = "";

/*
** Use Fossil credentials for HTTP Basic Authorization prompt
*/
static int use_fossil_creds_for_httpauth_prompt(void){
  Blob x;
  char c;
  prompt_user("Use Fossil username and password (y/N)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  return ( c=='y' || c=='Y' );
}

/*
** Prompt to save HTTP Basic Authorization information
*/
static int save_httpauth_prompt(void){
  Blob x;
  char c;
  if( (g.url.flags & URL_REMEMBER)==0 ) return 0;
  prompt_user("Remember Basic Authorization credentials (Y/n)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  return ( c!='n' && c!='N' );
}

/*
** Get the HTTP Basic Authorization credentials from the user
** when 401 is received.
*/
char *prompt_for_httpauth_creds(void){
  Blob x;
  char *zUser;
  char *zPw;
  char *zPrompt;
  char *zHttpAuth = 0;
  if( !fossil_isatty(fossil_fileno(stdin)) ) return 0;
  zPrompt = mprintf("\n%s authorization required by\n%s\n",
    g.url.isHttps==1 ? "Encrypted HTTPS" : "Unencrypted HTTP", g.url.canonical);
  fossil_print("%s", zPrompt);
  free(zPrompt);
  if ( g.url.user && g.url.passwd && use_fossil_creds_for_httpauth_prompt() ){
    zHttpAuth = mprintf("%s:%s", g.url.user, g.url.passwd);
  }else{
    prompt_user("Basic Authorization user: ", &x);
    zUser = mprintf("%b", &x);
    zPrompt = mprintf("HTTP password for %b: ", &x);
    blob_reset(&x);
    prompt_for_password(zPrompt, &x, 0);
    zSep = "/";
    zPw = mprintf("%b", &x);
    zHttpAuth = mprintf("%s:%s", zUser, zPw);
    free(zUser);
    free(zPw);
    free(zPrompt);
    blob_reset(&x);
  }
  blob_appendf(pHdr, "POST %s%sxfer HTTP/1.0\r\n", g.urlPath, zSep);
  if( g.urlProxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\n", g.urlProxyAuth);
  if( save_httpauth_prompt() ){
    set_httpauth(zHttpAuth);
  }
  return zHttpAuth;
}
  blob_appendf(pHdr, "Host: %s\r\n", g.urlHostname);
  blob_appendf(pHdr, "User-Agent: Fossil/" MANIFEST_VERSION "\r\n");

/*
** Send content pSend to the the server identified by g.url using the
** external program given by g.zHttpCmd.  Capture the reply from that
** program and load it into pReply.
**
** This routine implements the --transport-command option for "fossil sync".
*/
static int http_exchange_external(
  Blob *pSend,                /* Message to be sent */
  Blob *pReply,               /* Write the reply here */
  int mHttpFlags,             /* Flags.  See above */
  const char *zAltMimetype    /* Alternative mimetype if not NULL */
){
  char *zUplink;
  char *zDownlink;
  char *zCmd;
  char *zFullUrl;
  int rc;

  zUplink = fossil_temp_filename();
  zDownlink = fossil_temp_filename();
  zFullUrl = url_full(&g.url);
  zCmd = mprintf("%s %$ %$ %$", g.zHttpCmd, zFullUrl,zUplink,zDownlink);
  fossil_free(zFullUrl);
  blob_write_to_file(pSend, zUplink);
  if( g.fHttpTrace ){
    fossil_print("RUN %s\n", zCmd);
  }
  rc = fossil_system(zCmd);
  if( rc ){
    fossil_warning("Transport command failed: %s\n", zCmd);
  }
  fossil_free(zCmd);
  file_delete(zUplink);
  if( file_size(zDownlink, ExtFILE)<0 ){
    blob_zero(pReply);
  }else{
    blob_read_from_file(pReply, zDownlink, ExtFILE);
    file_delete(zDownlink);
  }
  return rc;
}
    blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");

/* If iTruth<0 then guess as to whether or not a PATH= argument is required
** when using ssh to run fossil on a remote machine name zHostname.  Return
** true if a PATH= should be provided and 0 if not.
**
** If iTruth is 1 or 0 then that means that the PATH= is or is not required,
** respectively.  Record this fact for future reference.
**
** If iTruth is 99 or more, then toggle the value that will be returned
** for future iTruth==(-1) queries.
*/
int ssh_needs_path_argument(const char *zHostname, int iTruth){
  int ans = 0;  /* Default to "no" */
  char *z = mprintf("use-path-for-ssh:%s", zHostname);
  if( iTruth<0 ){
    if( db_get_boolean(z/*works-like:"x"*/, 0) ) ans = 1;
  }else{
    if( iTruth>=99 ){
      iTruth = !db_get_boolean(z/*works-like:"x"*/, 0);
    }
    if( iTruth ){
      ans = 1;
      db_set(z/*works-like:"x"*/, "1", 1);
    }else{
      db_unset(z/*works-like:"x"*/, 1);
    }
  }
  fossil_free(z);
  return ans;
}

/*
** COMMAND: test-ssh-needs-path
**
** Usage: fossil test-ssh-needs-path ?HOSTNAME? ?BOOLEAN?
**
** With one argument, show whether or not the PATH= argument is included
** by default for HOSTNAME.  If the second argument is a boolean, then
** change the value.
**
** With no arguments, show all hosts for which ssh-needs-path is true.
*/
void test_ssh_needs_path(void){
  db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
  db_open_config(0,0);
  if( g.argc>=3 ){
    const char *zHost = g.argv[2];
    int a = -1;
    int rc;
    if( g.argc>=4 ) a = is_truth(g.argv[3]);
    rc = ssh_needs_path_argument(zHost, a);
    fossil_print("%-20s %s\n", zHost, rc ? "yes" : "no");
  }else{
    Stmt s;
    db_swap_connections();
    db_prepare(&s, "SELECT substr(name,18) FROM global_config"
                   " WHERE name GLOB 'use-path-for-ssh:*'");
    while( db_step(&s)==SQLITE_ROW ){
      const char *zHost = db_column_text(&s,0);
      fossil_print("%-20s yes\n", zHost);
    }
    db_finalize(&s);
    db_swap_connections();
  }
}
    blob_appendf(pHdr, "Content-Type: application/x-fossil\r\n");
  }
  blob_appendf(pHdr, "Content-Length: %d\r\n\r\n", blob_size(pPayload));

/* Add an approprate PATH= argument to the SSH command under construction
** in pCmd.
**
** About This Feature
** ==================
**
** On some ssh servers (Macs in particular are guilty of this) the PATH
** variable in the shell that runs the command that is sent to the remote
** host contains a limited number of read-only system directories:
**
**      /usr/bin:/bin:/usr/sbin:/sbin
**
** The fossil executable cannot be installed into any of those directories
** because they are locked down, and so the "fossil" command cannot run.
**
** To work around this, the fossil command is prefixed with the PATH=
** argument, inserted by this function, to augment the PATH with additional
** directories in which the fossil executable is often found.
**
** But other ssh servers are confused by this initial PATH= argument.
** Some ssh servers have a list of programs that they are allowed to run
** and will fail if the first argument is not on that list, and PATH=....
** is not on that list.
**
** So that various commands that use ssh can run seamlessly on a variety
** of systems (commands that use ssh include "fossil sync" with an ssh:
** URL and the "fossil patch pull" and "fossil patch push" commands where
** the destination directory starts with HOSTNAME: or USER@HOSTNAME:.)
** the following algorithm is used:
**
**   *  First try running the fossil without any PATH= argument.  If that
**      works (and it does on a majority of systems) then we are done.
**
**   *  If the first attempt fails, then try again after adding the
**      PATH= prefix argument.  (This function is what adds that
**      argument.)  If the retry works, then remember that fact using
**      the use-path-for-ssh:HOSTNAME setting so that the first step
**      is skipped on subsequent uses of the same command.
**
** See the forum thread at
** https://fossil-scm.org/forum/forumpost/4903cb4b691af7ce for more
** background.
**
** See also:
**
**   *  The ssh_needs_path_argument() function above.
**   *  The test-ssh-needs-path command that shows the settings
**      that cache whether or not a PATH= is needed for a particular
**      HOSTNAME.
*/
void ssh_add_path_argument(Blob *pCmd){
  blob_append_escaped_arg(pCmd, 
     "PATH=$HOME/bin:/usr/local/bin:/opt/homebrew/bin:$PATH", 1);
}

/*
** Return the complete text of the last HTTP reply as saved in the
** http-reply-N.txt file.  This only works if run using --httptrace.
** Without the --httptrace option, this routine returns a NULL pointer.
** It still might return a NULL pointer if for some reason it cannot
** find and open the last http-reply-N.txt file.
*/
char *http_last_trace_reply(void){
  Blob x;
  int n;
  char *zFilename;
  if( g.fHttpTrace==0 ) return 0;
  zFilename = mprintf("http-reply-%d.txt", traceCnt);
  n = blob_read_from_file(&x, zFilename, ExtFILE);
  fossil_free(zFilename);
  if( n<=0 ) return 0;
  return blob_str(&x);
}

/*
** Sign the content in pSend, compress it, and send it to the server
** via HTTP or HTTPS.  Get a reply, uncompress the reply, and store the reply
** in pRecv.  pRecv is assumed to be uninitialized when
** this routine is called - this routine will initialize it.
**
** The server address is contain in the "g" global structure.  The
** url_parse() routine should have been called prior to this routine
** in order to fill this structure appropriately.
*/
void http_exchange(Blob *pSend, Blob *pReply, int useLogin){
int http_exchange(
  Blob *pSend,                /* Message to be sent */
  Blob *pReply,               /* Write the reply here */
  int mHttpFlags,             /* Flags.  See above */
  int maxRedirect,            /* Max number of redirects */
  const char *zAltMimetype    /* Alternative mimetype if not NULL */
){
  Blob login;           /* The login card */
  Blob payload;         /* The complete payload including login card */
  Blob hdr;             /* The HTTP request header */
  int closeConnection;  /* True to close the connection when done */
  int iLength;          /* Length of the reply payload */
  int rc;               /* Result code */
  int iLength;          /* Expected length of the reply payload */
  int rc = 0;           /* Result code */
  int iHttpVersion;     /* Which version of HTTP protocol server uses */
  char *zLine;          /* A single line of the reply header */
  int i;                /* Loop counter */
  int isError = 0;      /* True if the reply is an error message */
  int isCompressed = 1; /* True if the reply is compressed */

  if( g.zHttpCmd!=0 ){
    /* Handle the --transport-command option for "fossil sync" and similar */
    return http_exchange_external(pSend,pReply,mHttpFlags,zAltMimetype);
  }

  /* Activate the PATH= auxiliary argument to the ssh command if that
  ** is called for.
  */
  if( g.url.isSsh
   && (g.url.flags & URL_SSH_RETRY)==0
   && ssh_needs_path_argument(g.url.hostname, -1)
  ){
    g.url.flags |= URL_SSH_PATH;
  }

  if( transport_open() ){
    fossil_fatal(transport_errmsg());
  if( transport_open(&g.url) ){
    fossil_warning("%s", transport_errmsg(&g.url));
    return 1;
  }

  /* Construct the login card and prepare the complete payload */
  if( blob_size(pSend)==0 ){
    blob_zero(&payload);
  }else{
  blob_zero(&login);
  if( useLogin ) http_build_login_card(pSend, &login);
  if( g.fHttpTrace ){
    payload = login;
    blob_append(&payload, blob_buffer(pSend), blob_size(pSend));
  }else{
    blob_compress2(&login, pSend, &payload);
    blob_reset(&login);
    blob_zero(&login);
    if( mHttpFlags & HTTP_USE_LOGIN ) http_build_login_card(pSend, &login);
    if( g.fHttpTrace || (mHttpFlags & HTTP_NOCOMPRESS)!=0 ){
      payload = login;
      blob_append(&payload, blob_buffer(pSend), blob_size(pSend));
    }else{
      blob_compress2(&login, pSend, &payload);
      blob_reset(&login);
    }
  }

  /* Construct the HTTP request header */
  http_build_header(&payload, &hdr);
  http_build_header(&payload, &hdr, zAltMimetype);

  /* When tracing, write the transmitted HTTP message both to standard
  ** output and into a file.  The file can then be used to drive the
  ** server-side like this:
  **
  **      ./fossil http <http-trace-1.txt
  **      ./fossil test-http <http-request-1.txt
  */
  if( g.fHttpTrace ){
    static int traceCnt = 0;
    char *zOutFile;
    FILE *out;
    traceCnt++;
    zOutFile = mprintf("http-trace-%d.txt", traceCnt);
    zOutFile = mprintf("http-request-%d.txt", traceCnt);
    printf("HTTP SEND: (%s)\n%s%s=======================\n", 
        zOutFile, blob_str(&hdr), blob_str(&payload));
    out = fopen(zOutFile, "w");
    out = fopen(zOutFile, "wb");
    if( out ){
      fwrite(blob_buffer(&hdr), 1, blob_size(&hdr), out);
      fwrite(blob_buffer(&payload), 1, blob_size(&payload), out);
      fclose(out);
    }
    free(zOutFile);
    zOutFile = mprintf("http-reply-%d.txt", traceCnt);
    out = fopen(zOutFile, "wb");
    transport_log(out);
    free(zOutFile);
  }

  /*
  ** Send the request to the server.
  */
  if( mHttpFlags & HTTP_VERBOSE ){
    fossil_print("URL: %s\n", g.url.canonical);
    fossil_print("Sending %d byte header and %d byte payload\n",
                  blob_size(&hdr), blob_size(&payload));
  }
  transport_send(&hdr);
  transport_send(&payload);
  transport_send(&g.url, &hdr);
  transport_send(&g.url, &payload);
  blob_reset(&hdr);
  blob_reset(&payload);
  transport_flip();
  
  transport_flip(&g.url);

  /*
  ** Read and interpret the server reply
  */
  closeConnection = 1;
  iLength = -1;
  iHttpVersion = -1;
  while( (zLine = transport_receive_line())!=0 && zLine[0]!=0 ){
    if( strncasecmp(zLine, "http/1.", 7)==0 ){
  while( (zLine = transport_receive_line(&g.url))!=0 && zLine[0]!=0 ){
    if( mHttpFlags & HTTP_VERBOSE ){
      fossil_print("Read: [%s]\n", zLine);
    }
    if( fossil_strnicmp(zLine, "http/1.", 7)==0 ){
      if( sscanf(zLine, "HTTP/1.%d %d", &iHttpVersion, &rc)!=2 ) goto write_err;
      if( rc==401 ){
        if( fSeenHttpAuth++ < MAX_HTTP_AUTH ){
          if( g.zHttpAuth ){
            if( g.zHttpAuth ) free(g.zHttpAuth);
          }
          g.zHttpAuth = prompt_for_httpauth_creds();
          transport_close(&g.url);
          return http_exchange(pSend, pReply, mHttpFlags,
                               maxRedirect, zAltMimetype);
        }
      }
      if( rc!=200 && rc!=302 ){
      if( rc!=200 && rc!=301 && rc!=302 && rc!=307 && rc!=308 ){
        int ii;
        for(ii=7; zLine[ii] && zLine[ii]!=' '; ii++){}
        while( zLine[ii]==' ' ) ii++;
        fossil_fatal("server says: %s\n", &zLine[ii]);
        fossil_warning("server says: %s", &zLine[ii]);
        goto write_err;
      }
      if( iHttpVersion==0 ){
        closeConnection = 1;
      }else{
        closeConnection = 0;
      }
    }else if( g.url.isSsh && fossil_strnicmp(zLine, "status:", 7)==0 ){
      if( sscanf(zLine, "Status: %d", &rc)!=1 ) goto write_err;
      if( rc!=200 && rc!=301 && rc!=302 && rc!=307 && rc!=308 ){
        int ii;
        for(ii=7; zLine[ii] && zLine[ii]!=' '; ii++){}
        while( zLine[ii]==' ' ) ii++;
        fossil_warning("server says: %s", &zLine[ii]);
        goto write_err;
      }
      if( iHttpVersion<0 ) iHttpVersion = 1;
      closeConnection = 0;
    }else if( strncasecmp(zLine, "content-length:", 15)==0 ){
      for(i=15; isspace(zLine[i]); i++){}
    }else if( fossil_strnicmp(zLine, "content-length:", 15)==0 ){
      for(i=15; fossil_isspace(zLine[i]); i++){}
      iLength = atoi(&zLine[i]);
    }else if( strncasecmp(zLine, "connection:", 11)==0 ){
    }else if( fossil_strnicmp(zLine, "connection:", 11)==0 ){
      char c;
      for(i=11; isspace(zLine[i]); i++){}
      c = zLine[i];
      if( sqlite3_strlike("%close%", &zLine[11], 0)==0 ){
      if( c=='c' || c=='C' ){
        closeConnection = 1;
      }else if( c=='k' || c=='K' ){
      }else if( sqlite3_strlike("%keep-alive%", &zLine[11], 0)==0 ){
        closeConnection = 0;
      }
    }else if( ( rc==301 || rc==302 || rc==307 || rc==308 ) &&
    }else if( rc==302 && strncasecmp(zLine, "location:", 9)==0 ){
                fossil_strnicmp(zLine, "location:", 9)==0 ){
      int i, j;
      int wasHttps;

      if ( --maxRedirect == 0){
        fossil_warning("redirect limit exceeded");
        goto write_err;
      }
      for(i=9; zLine[i] && zLine[i]==' '; i++){}
      if( zLine[i]==0 ) fossil_fatal("malformed redirect: %s", zLine);
      j = strlen(zLine) - 1; 
      if( j>4 && strcmp(&zLine[j-4],"/xfer")==0 ) zLine[j-4] = 0;
      fossil_print("redirect to %s\n", &zLine[i]);
      url_parse(&zLine[i]);
      transport_close();
      http_exchange(pSend, pReply, useLogin);
      return;
    }
  }
      if( zLine[i]==0 ){
        fossil_warning("malformed redirect: %s", zLine);
        goto write_err;
      }
      j = strlen(zLine) - 1;
      while( j>4 && fossil_strcmp(&zLine[j-4],"/xfer")==0 ){
         j -= 4;
         zLine[j] = 0;
      }
      if( (mHttpFlags & HTTP_QUIET)==0 ){
        fossil_print("redirect with status %d to %s\n", rc, &zLine[i]);
      }
      if( g.url.isFile || g.url.isSsh ){
        fossil_warning("cannot redirect from %s to %s", g.url.canonical,
                       &zLine[i]);
        goto write_err;
      }
      wasHttps = g.url.isHttps;
      url_parse(&zLine[i], 0);
      if( wasHttps && !g.url.isHttps ){
        fossil_warning("cannot redirect from HTTPS to HTTP");
        goto write_err;
      }
      if( g.url.isSsh || g.url.isFile ){
        fossil_warning("cannot redirect to %s", &zLine[i]);
        goto write_err;
      }
      transport_close(&g.url);
      transport_global_shutdown(&g.url);
      fSeenHttpAuth = 0;
      if( g.zHttpAuth ) free(g.zHttpAuth);
      g.zHttpAuth = get_httpauth();
      if( rc==301 || rc==308 ) url_remember();
      return http_exchange(pSend, pReply, mHttpFlags,
                           maxRedirect, zAltMimetype);
    }else if( fossil_strnicmp(zLine, "content-type: ", 14)==0 ){
      if( fossil_strnicmp(&zLine[14], "application/x-fossil-debug", -1)==0 ){
        isCompressed = 0;
      }else if( fossil_strnicmp(&zLine[14],
                          "application/x-fossil-uncompressed", -1)==0 ){
        isCompressed = 0;
      }else{
        if( mHttpFlags & HTTP_GENERIC ){
          if( mHttpFlags & HTTP_NOCOMPRESS ) isCompressed = 0;
        }else if( fossil_strnicmp(&zLine[14], "application/x-fossil", -1)!=0 ){
          isError = 1;
        }
      }
    }
  }
  if( iHttpVersion<0 ){
    /* We got nothing back from the server.  If using the ssh: protocol,
    ** this might mean we need to add or remove the PATH=... argument
    ** to the SSH command being sent.  If that is the case, retry the
    ** request after adding or removing the PATH= argument.
    */
    if( g.url.isSsh                         /* This is an SSH: sync */
     && (g.url.flags & URL_SSH_EXE)==0      /* Does not have ?fossil=.... */
     && (g.url.flags & URL_SSH_RETRY)==0    /* Not retried already */
    ){
      /* Retry after flipping the SSH_PATH setting */
      transport_close(&g.url);
      fossil_print(
        "First attempt to run fossil on %s using SSH failed.\n"
        "Retrying %s the PATH= argument.\n",
        g.url.hostname,
        (g.url.flags & URL_SSH_PATH)!=0 ? "without" : "with"
      );
      g.url.flags ^= URL_SSH_PATH|URL_SSH_RETRY;
      rc = http_exchange(pSend,pReply,mHttpFlags,0,zAltMimetype);
      if( rc==0 ){
        (void)ssh_needs_path_argument(g.url.hostname,
                                (g.url.flags & URL_SSH_PATH)!=0);
      }
      return rc;
    }else{
      /* The problem could not be corrected by retrying.  Report the
      ** the error. */
      if( g.url.isSsh && !g.fSshTrace ){
        fossil_warning("server did not reply: "
                       " rerun with --sshtrace for diagnostics");
      }else{
        fossil_warning("server did not reply");
      }
      goto write_err;
    }
  }
  if( rc!=200 ){
    fossil_fatal("\"location:\" missing from 302 redirect reply");
    fossil_warning("\"location:\" missing from %d redirect reply", rc);
    goto write_err;
  }

  /*
  ** Extract the reply payload that follows the header
  */
  blob_zero(pReply);
  if( iLength<0 ){
    fossil_fatal("server did not reply");
    goto write_err;
  }
  blob_zero(pReply);
  blob_resize(pReply, iLength);
  iLength = transport_receive(blob_buffer(pReply), iLength);
  blob_resize(pReply, iLength);
  if( g.fHttpTrace ){
  if( iLength==0 ){
    /* No content to read */
  }else if( iLength>0 ){
    /* Read content of a known length */
    int iRecvLen;         /* Received length of the reply payload */
    blob_resize(pReply, iLength);
    iRecvLen = transport_receive(&g.url, blob_buffer(pReply), iLength);
    if( mHttpFlags & HTTP_VERBOSE ){
      fossil_print("Reply received: %d of %d bytes\n", iRecvLen, iLength);
    }
    if( iRecvLen != iLength ){
      fossil_warning("response truncated: got %d bytes of %d",
                     iRecvLen, iLength);
      goto write_err;
    }
  }else if( closeConnection ){
    /* Read content until end-of-file */
    int iRecvLen;         /* Received length of the reply payload */
    unsigned int nReq = 1000;
    unsigned int nPrior = 0;
    do{
      nReq *= 2;
      blob_resize(pReply, nPrior+nReq);
      iRecvLen = transport_receive(&g.url, &pReply->aData[nPrior], (int)nReq);
      nPrior += iRecvLen;
      pReply->nUsed = nPrior;
    }while( iRecvLen==nReq && nReq<0x20000000 );
    if( mHttpFlags & HTTP_VERBOSE ){
    printf("HTTP RECEIVE:\n%s\n=======================\n", blob_str(pReply));
      fossil_print("Reply received: %u bytes (w/o content-length)\n", nPrior);
    }
  }else{
    assert( iLength<0 && !closeConnection );
    fossil_warning("\"content-length\" missing from %d keep-alive reply", rc);
  }
  if( isError ){
    char *z;
    int i, j;
    blob_uncompress(pReply, pReply);
  }
    z = blob_str(pReply);
    for(i=j=0; z[i]; i++, j++){
      if( z[i]=='<' ){
        while( z[i] && z[i]!='>' ) i++;
        if( z[i]==0 ) break;
      }
      z[j] = z[i];
    }
    z[j] = 0;
    fossil_warning("server sends error: %s", z);
    goto write_err;
  }
  if( isCompressed ) blob_uncompress(pReply, pReply);

  /*
  ** Close the connection to the server if appropriate.
  **
  ** FIXME:  There is some bug in the lower layers that prevents the
  ** connection from remaining open.  The easiest fix for now is to
  ** simply close and restart the connection for each round-trip.
  **
  ** For SSH we will leave the connection open.
  */
  closeConnection = 1; /* FIX ME */
  if( ! g.url.isSsh ) closeConnection = 1; /* FIX ME */
  if( closeConnection ){
    transport_close();
    transport_close(&g.url);
  }else{
    transport_rewind();
    transport_rewind(&g.url);
  }
  return;
  return 0;

  /* 
  /*
  ** Jump to here if an error is seen.
  */
write_err:
  transport_close();
  return;  
  transport_close(&g.url);
  return 1;
}

/*
** COMMAND: test-httpmsg
**
** Usage: %fossil test-httpmsg ?OPTIONS? URL ?PAYLOAD? ?OUTPUT?
**
** Send an HTTP message to URL and get the reply. PAYLOAD is a file containing
** the payload, or "-" to read payload from standard input.  a POST message
** is sent if PAYLOAD is specified and is non-empty.  If PAYLOAD is omitted
** or is an empty file, then a GET message is sent.
**
** If a second filename (OUTPUT) is given after PAYLOAD, then the reply
** is written into that second file instead of being written on standard
** output.  Use the "--out OUTPUT" option to specify an output file for
** a GET request where there is no PAYLOAD.
**
** Options:
**     --compress                 Use ZLIB compression on the payload
**     --mimetype TYPE            Mimetype of the payload
**     --out FILE                 Store the reply in FILE
**     -v                         Verbose output
**     --xfer                     PAYLOAD in a Fossil xfer protocol message
*/
void test_httpmsg_command(void){
  const char *zMimetype;
  const char *zInFile;
  const char *zOutFile;
  Blob in, out;
  unsigned int mHttpFlags = HTTP_GENERIC|HTTP_NOCOMPRESS;

  zMimetype = find_option("mimetype",0,1);
  zOutFile = find_option("out","o",1);
  if( find_option("verbose","v",0)!=0 ) mHttpFlags |= HTTP_VERBOSE;
  if( find_option("compress",0,0)!=0 ) mHttpFlags &= ~HTTP_NOCOMPRESS;
  if( find_option("xfer",0,0)!=0 ){
    mHttpFlags |= HTTP_USE_LOGIN;
    mHttpFlags &= ~HTTP_GENERIC;
  }
  verify_all_options();
  if( g.argc<3 || g.argc>5 ){
    usage("URL ?PAYLOAD? ?OUTPUT?");
  }
  zInFile = g.argc>=4 ? g.argv[3] : 0;
  if( g.argc==5 ){
    if( zOutFile ){
      fossil_fatal("output file specified twice: \"--out %s\" and \"%s\"",
        zOutFile, g.argv[4]);
    }
    zOutFile = g.argv[4];
  }
  url_parse(g.argv[2], 0);
  if( g.url.protocol[0]!='h' ){
    fossil_fatal("the %s command supports only http: and https:", g.argv[1]);
  }
  if( zInFile ){
    blob_read_from_file(&in, zInFile, ExtFILE);
    if( zMimetype==0 && (mHttpFlags & HTTP_GENERIC)!=0 ){
      if( fossil_strcmp(zInFile,"-")==0 ){
        zMimetype = "application/x-unknown";
      }else{
        zMimetype = mimetype_from_name(zInFile);
      }
    }
  }else{
    blob_init(&in, 0, 0);
  }
  blob_init(&out, 0, 0);
  if( (mHttpFlags & HTTP_VERBOSE)==0 && zOutFile==0 ){
    zOutFile = "-";
    mHttpFlags |= HTTP_QUIET;
  }
  http_exchange(&in, &out, mHttpFlags, 4, zMimetype);
  if( zOutFile ) blob_write_to_file(&out, zOutFile);
  blob_zero(&in);
  blob_zero(&out);
}
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** This file manages low-level client socket communications.  The socket
** might be for a simple HTTP request or for an encrypted HTTPS request.
**
** This file implements a singleton.  A single client socket may be active
** at a time.  State information is stored in static variables.  The identity
** of the server is held in global variables that are set by url_parse().
**
** Low-level sockets are abstracted out into this module because they 
** Low-level sockets are abstracted out into this module because they
** are handled different on Unix and windows.
*/

#if defined(_WIN32)
# if defined(_WIN32_WINNT)
#  undef _WIN32_WINNT
# endif
# define _WIN32_WINNT 0x501
#endif
#ifndef __EXTENSIONS__
# define __EXTENSIONS__ 1  /* IPv6 won't compile on Solaris without this */
#endif
#include "config.h"
#include "http_socket.h"
#ifdef __MINGW32__
#  include <windows.h>
#  include <winsock2.h>
#if defined(_WIN32)
#  include <winsock2.h>
#  include <ws2tcpip.h>
#else
#  include <netinet/in.h>
#  include <arpa/inet.h>
#  include <sys/socket.h>
#  include <netdb.h>
#  include <netinet/in.h>
#endif
#include <assert.h>
#include <sys/types.h>
#include <signal.h>

/*
** There can only be a single socket connection open at a time.
** State information about that socket is stored in the following
** local variables:
*/
static int socketIsInit = 0;    /* True after global initialization */
#ifdef __MINGW32__
#if defined(_WIN32)
static WSADATA socketInfo;      /* Windows socket initialize data */
#endif
static int iSocket = -1;        /* The socket on which we talk to the server */
static char *socketErrMsg = 0;  /* Text of most recent socket error */


/*
** Clear the socket error message
*/
static void socket_clear_errmsg(void){
  free(socketErrMsg);
  socketErrMsg = 0;
}

/*
** Set the socket error message.
*/
void socket_set_errmsg(char *zFormat, ...){
void socket_set_errmsg(const char *zFormat, ...){
  va_list ap;
  socket_clear_errmsg();
  va_start(ap, zFormat);
  socketErrMsg = vmprintf(zFormat, ap);
  va_end(ap);
}

/*
** Return the current socket error message
*/
const char *socket_errmsg(void){
  return socketErrMsg;
char *socket_errmsg(void){
  char *zResult = socketErrMsg;
  socketErrMsg = 0;
  return zResult;
}

/*
** Call this routine once before any other use of the socket interface.
** This routine does initial configuration of the socket module.
*/
void socket_global_init(void){
  if( socketIsInit==0 ){
#ifdef __MINGW32__
#if defined(_WIN32)
    if( WSAStartup(MAKEWORD(2,0), &socketInfo)!=0 ){
      fossil_panic("can't initialize winsock");
    }
#endif
    socketIsInit = 1;
  }
}

/*
** Call this routine to shutdown the socket module prior to program
** exit.
*/
void socket_global_shutdown(void){
  if( socketIsInit ){
#ifdef __MINGW32__
#if defined(_WIN32)
    WSACleanup();
#endif
    socket_clear_errmsg();
    socketIsInit = 0;
  }
}

/*
** Close the currently open socket.  If no socket is open, this routine
** is a no-op.
*/
void socket_close(void){
  if( iSocket>=0 ){
#ifdef __MINGW32__
#if defined(_WIN32)
    if( shutdown(iSocket,1)==0 ) shutdown(iSocket,0);
    closesocket(iSocket);
#else
    close(iSocket);
#endif
    iSocket = -1;
  }
}

/*
** Open a socket connection.  The identify of the server is determined
** by global varibles that are set using url_parse():
** by pUrlData
**
**    g.urlName       Name of the server.  Ex: www.fossil-scm.org
**    g.urlPort       TCP/IP port to use.  Ex: 80
**    pUrlData->name       Name of the server.  Ex: fossil-scm.org
**    pUrlData->port       TCP/IP port to use.  Ex: 80
**
** Return the number of errors.
*/
int socket_open(void){
  static struct sockaddr_in addr;  /* The server address */
  static int addrIsInit = 0;       /* True once addr is initialized */
int socket_open(UrlData *pUrlData){
  int rc = 0;
  struct addrinfo *ai = 0;
  struct addrinfo *p;
  struct addrinfo hints;
  char zPort[30];
  char zRemote[NI_MAXHOST];

  socket_global_init();
  socket_close();
  if( !addrIsInit ){
    addr.sin_family = AF_INET;
  memset(&hints, 0, sizeof(struct addrinfo));
  hints.ai_family = g.fIPv4 ? AF_INET : AF_UNSPEC;
    addr.sin_port = htons(g.urlPort);
    *(int*)&addr.sin_addr = inet_addr(g.urlName);
    if( -1 == *(int*)&addr.sin_addr ){
#ifndef FOSSIL_STATIC_LINK
  hints.ai_socktype = SOCK_STREAM;
  hints.ai_protocol = IPPROTO_TCP;
  sqlite3_snprintf(sizeof(zPort),zPort,"%d", pUrlData->port);
      struct hostent *pHost;
      pHost = gethostbyname(g.urlName);
      if( pHost!=0 ){
  rc = getaddrinfo(pUrlData->name, zPort, &hints, &ai);
  if( rc ){
        memcpy(&addr.sin_addr,pHost->h_addr_list[0],pHost->h_length);
      }else
#endif
      {
        socket_set_errmsg("can't resolve host name: %s\n", g.urlName);
        return 1;
      }
    socket_set_errmsg("getaddrinfo() fails: %s", gai_strerror(rc));
    goto end_socket_open;
  }
  for(p=ai; p; p=p->ai_next){
    iSocket = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
    if( iSocket<0 ) continue;
    if( connect(iSocket,p->ai_addr,p->ai_addrlen)<0 ){
      socket_close();
      continue;
    }
    addrIsInit = 1;

    rc = getnameinfo(p->ai_addr, p->ai_addrlen, zRemote, sizeof(zRemote),
                     0, 0, NI_NUMERICHOST);
    if( rc ){
      socket_set_errmsg("getnameinfo() failed: %s", gai_strerror(rc));
      goto end_socket_open;
    }
    /* Set the Global.zIpAddr variable to the server we are talking to.
    ** This is used to populate the ipaddr column of the rcvfrom table,
    ** if any files are received from the server.
    */
    g.zIpAddr = mprintf("%s", inet_ntoa(addr.sin_addr));
    g.zIpAddr = mprintf("%s", zRemote);
  }
  iSocket = socket(AF_INET,SOCK_STREAM,0);
  if( iSocket<0 ){
    socket_set_errmsg("cannot create a socket");
    return 1;
    break;
  }
  if( connect(iSocket,(struct sockaddr*)&addr,sizeof(addr))<0 ){
    socket_set_errmsg("cannot connect to host %s:%d", g.urlName, g.urlPort);
  if( p==0 ){
    socket_set_errmsg("cannot connect to host %s:%d", pUrlData->name,
    socket_close();
    return 1;
                      pUrlData->port);
    rc = 1;
  }
#ifndef __MINGW32__
#if !defined(_WIN32)
  signal(SIGPIPE, SIG_IGN);
#endif
end_socket_open:
  if( rc && iSocket>=0 ) socket_close();
  if( ai ) freeaddrinfo(ai);
  return 0;
  return rc;
}

/*
** Send content out over the open socket connection.
*/
size_t socket_send(void *NotUsed, void *pContent, size_t N){
  size_t sent;
size_t socket_send(void *NotUsed, const void *pContent, size_t N){
  ssize_t sent;
  size_t total = 0;
  while( N>0 ){
    sent = send(iSocket, pContent, N, 0);
    if( sent<=0 ) break;
    total += sent;
    N -= sent;
    total += (size_t)sent;
    N -= (size_t)sent;
    pContent = (void*)&((char*)pContent)[sent];
  }
  return total;
}

/*
** Receive content back from the open socket connection.
** Return the number of bytes read.
**
** When bDontBlock is false, this function blocks until all N bytes
** have been read.
*/
size_t socket_receive(void *NotUsed, void *pContent, size_t N){
  size_t got;
size_t socket_receive(void *NotUsed, void *pContent, size_t N, int bDontBlock){
  ssize_t got;
  size_t total = 0;
  int flags = 0;
#ifdef MSG_DONTWAIT
  if( bDontBlock ) flags |= MSG_DONTWAIT;
#endif
  while( N>0 ){
    /* WinXP fails for large values of N.  So limit it to 64KiB. */
    got = recv(iSocket, pContent, N, 0);
    got = recv(iSocket, pContent, N>65536 ? 65536 : N, flags);
    if( got<=0 ) break;
    total += got;
    N -= got;
    total += (size_t)got;
    N -= (size_t)got;
    pContent = (void*)&((char*)pContent)[got];
  }
  return total;
}
Added src/http_ssl.c.











































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2009 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file manages low-level SSL communications.
**
** This file implements a singleton.  A single SSL connection may be active
** at a time.  State information is stored in static variables.
**
** The SSL connections can be either a client or a server.  But all
** connections for a single process must be of the same type, either client
** or server.
**
** SSL support is abstracted out into this module because Fossil can
** be compiled without SSL support (which requires OpenSSL library)
*/

#include "config.h"
#include "http_ssl.h"

#ifdef FOSSIL_ENABLE_SSL

#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/x509.h>

#include <assert.h>
#include <sys/types.h>

/*
** There can only be a single OpenSSL IO connection open at a time.
** State information about that IO is stored in the following
** local variables:
*/
static int sslIsInit = 0;    /* 0: uninit 1: init as client 2: init as server */
static BIO *iBio = 0;        /* OpenSSL I/O abstraction */
static char *sslErrMsg = 0;  /* Text of most recent OpenSSL error */
static SSL_CTX *sslCtx;      /* SSL context */
static SSL *ssl;
static struct {              /* Accept this SSL cert for this session only */
  char *zHost;                  /* Subject or host name */
  char *zHash;                  /* SHA2-256 hash of the cert */
} sException;
static int sslNoCertVerify = 0;  /* Do not verify SSL certs */


/* This is a self-signed cert in the PEM format that can be used when
** no other certs are available.
*/
static const char sslSelfCert[] =
"-----BEGIN CERTIFICATE-----\n"
"MIIDMTCCAhkCFGrDmuJkkzWERP/ITBvzwwI2lv0TMA0GCSqGSIb3DQEBCwUAMFQx\n"
"CzAJBgNVBAYTAlVTMQswCQYDVQQIDAJOQzESMBAGA1UEBwwJQ2hhcmxvdHRlMRMw\n"
"EQYDVQQKDApGb3NzaWwtU0NNMQ8wDQYDVQQDDAZGb3NzaWwwIBcNMjExMjI3MTEz\n"
"MTU2WhgPMjEyMTEyMjcxMTMxNTZaMFQxCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJO\n"
"QzESMBAGA1UEBwwJQ2hhcmxvdHRlMRMwEQYDVQQKDApGb3NzaWwtU0NNMQ8wDQYD\n"
"VQQDDAZGb3NzaWwwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCCbTU2\n"
"6GRQHQqLq7vyZ0OxpAxmgfAKCxt6eIz+jBi2ZM/CB5vVXWVh2+SkSiWEA3UZiUqX\n"
"xZlzmS/CglZdiwLLDJML8B4OiV72oivFH/vJ7+cbvh1dTxnYiHuww7GfQngPrLfe\n"
"fiIYPDk1GTUJHBQ7Ue477F7F8vKuHdVgwktF/JDM6M60aSqlo2D/oysirrb+dlur\n"
"Tlv0rjsYOfq6bLAajoL3qi/vek6DNssoywbge4PfbTgS9g7Gcgncbcet5pvaS12J\n"
"avhFcd4JU4Ity49Hl9S/C2MfZ1tE53xVggRwKz4FPj65M5uymTdcxtjKXtCxIE1k\n"
"KxJxXQh7rIYjm+RTAgMBAAEwDQYJKoZIhvcNAQELBQADggEBAFkdtpqcybAzJN8G\n"
"+ONuUm5sXNbWta7JGvm8l0BTSBcCUtJA3hn16iJqXA9KmLnaF2denC4EYk+KlVU1\n"
"QXxskPJ4jB8A5B05jMijYv0nzCxKhviI8CR7GLEEGKzeg9pbW0+O3vaVehoZtdFX\n"
"z3SsCssr9QjCLiApQxMzW1Iv3od2JXeHBwfVMFrWA1VCEUCRs8OSW/VOqDPJLVEi\n"
"G6wxc4kN9dLK+5S29q3nzl24/qzXoF8P9Re5KBCbrwaHgy+OEEceq5jkmfGFxXjw\n"
"pvVCNry5uAhH5NqbXZampUWqiWtM4eTaIPo7Y2mDA1uWhuWtO6F9PsnFJlQHCnwy\n"
"s/TsrXk=\n"
"-----END CERTIFICATE-----\n";

/* This is the private-key corresponding to the cert above
*/
static const char sslSelfPKey[] =
"-----BEGIN PRIVATE KEY-----\n"
"MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCCbTU26GRQHQqL\n"
"q7vyZ0OxpAxmgfAKCxt6eIz+jBi2ZM/CB5vVXWVh2+SkSiWEA3UZiUqXxZlzmS/C\n"
"glZdiwLLDJML8B4OiV72oivFH/vJ7+cbvh1dTxnYiHuww7GfQngPrLfefiIYPDk1\n"
"GTUJHBQ7Ue477F7F8vKuHdVgwktF/JDM6M60aSqlo2D/oysirrb+dlurTlv0rjsY\n"
"Ofq6bLAajoL3qi/vek6DNssoywbge4PfbTgS9g7Gcgncbcet5pvaS12JavhFcd4J\n"
"U4Ity49Hl9S/C2MfZ1tE53xVggRwKz4FPj65M5uymTdcxtjKXtCxIE1kKxJxXQh7\n"
"rIYjm+RTAgMBAAECggEANfTH1vc8yIe7HRzmm9lsf8jF+II4s2705y2H5qY+cvYx\n"
"nKtZJGOG1X0KkYy7CGoFv5K0cSUl3lS5FVamM/yWIzoIex/Sz2C1EIL2aI5as6ez\n"
"jB6SN0/J+XI8+Vt7186/rHxfdIPpxuzjHbxX3HTpScETNWcLrghbrPxakbTPPxwt\n"
"+x7QlPmmkFNuMfvkzToFf9NdwL++44TeBPOpvD/Lrw+eyqdth9RJPq9cM96plh9V\n"
"HuRqeD8+QNafaXBdSQs3FJK/cDK/vWGKZWIfFVSDbDhwYljkXGijreFjtXQfkkpF\n"
"rl1J87/H9Ee7z8fTD2YXQHl+0/rghAVtac3u54dpQQKBgQC2XG3OEeMrOp9dNkUd\n"
"F8VffUg0ecwG+9L3LCe7U71K0kPmXjV6xNnuYcNQu84kptc5vI8wD23p29LaxdNc\n"
"9m0lcw06/YYBOPkNphcHkINYZTvVJF10mL3isymzMaTtwDkZUkOjL1B+MTiFT/qp\n"
"ARKrTYGJ4HxY7+tUkI5pUmg4PQKBgQC3GA4d1Rz3Pb/RRpcsZgWknKsKhoN36mSn\n"
"xFJ3wPBvVv2B1ltTMzh/+the0ty6clzMrvoLERzRcheDsNrc/j/TUVG8sVdBYJwX\n"
"tMZyFW4NVMOErT/1ukh6jBqIMBo6NJL3EV/AKj0yniksgKOr0/AAduAccnGST8Jd\n"
"SHOdjwvHzwKBgGZBq/zqgNTDuYseHGE07CMgcDWkumiMGv8ozlq3mSR0hUiPOTPP\n"
"YFjQjyIdPXnF6FfiyPPtIvgIoNK2LVAqiod+XUPf152l4dnqcW13dn9BvOxGyPTR\n"
"lWCikFaAFviOWjY9r9m4dU1dslDmySqthFd0TZgPvgps9ivkJ0cdw30NAoGAMC/E\n"
"h1VvKiK2OP27C5ROJ+STn1GHiCfIFd81VQ8SODtMvL8NifgRBp2eFFaqgOdYRQZI\n"
"CGGYlAbS6XXCJCdF5Peh62dA75PdgN+y2pOJQzjrvB9cle9Q4++7i9wdCvSLOTr5\n"
"WDnFoWy+qVexu6crovOmR9ZWzYrwPFy1EOJ010ECgYBl7Q+jmjOSqsVwhFZ0U7LG\n"
"diN+vXhWfn1wfOWd8u79oaqU/Oy7xyKW2p3H5z2KFrBM/vib53Lh4EwFZjcX+jVG\n"
"krAmbL+M/hP7z3TD2UbESAzR/c6l7FU45xN84Lsz5npkR8H/uAHuqLgb9e430Mjx\n"
"YNMwdb8rChHHChNZu6zuxw==\n"
"-----END PRIVATE KEY-----\n";

/*
** Read a PEM certificate from memory and push it into an SSL_CTX.
** Return the number of errors.
*/
static int sslctx_use_cert_from_mem(
  SSL_CTX *ctx,
  const char *pData,
  int nData
){
  BIO *in;
  int rc = 1;
  X509 *x = 0;
  X509 *cert = 0;

  in = BIO_new_mem_buf(pData, nData);
  if( in==0 ) goto end_of_ucfm;
  /* x = X509_new_ex(ctx->libctx, ctx->propq); */
  x = X509_new();
  if( x==0 ) goto end_of_ucfm;
  cert = PEM_read_bio_X509(in, &x, 0, 0);
  if( cert==0 ) goto end_of_ucfm;
  rc = SSL_CTX_use_certificate(ctx, x)<=0;
end_of_ucfm:
  X509_free(x);
  BIO_free(in);
  return rc;
}

/*
** Read a PEM private key from memory and add it to an SSL_CTX.
** Return the number of errors.
*/
static int sslctx_use_pkey_from_mem(
  SSL_CTX *ctx,
  const char *pData,
  int nData
){
  int rc = 1;
  BIO *in;
  EVP_PKEY *pkey = 0;

  in = BIO_new_mem_buf(pData, nData);
  if( in==0 ) goto end_of_upkfm;
  pkey = PEM_read_bio_PrivateKey(in, 0, 0, 0);
  if( pkey==0 ) goto end_of_upkfm;
  rc = SSL_CTX_use_PrivateKey(ctx, pkey)<=0;
  EVP_PKEY_free(pkey);
end_of_upkfm:
  BIO_free(in);
  return rc;
}

/*
** Clear the SSL error message
*/
static void ssl_clear_errmsg(void){
  free(sslErrMsg);
  sslErrMsg = 0;
}

/*
** Set the SSL error message.
*/
void ssl_set_errmsg(const char *zFormat, ...){
  va_list ap;
  ssl_clear_errmsg();
  va_start(ap, zFormat);
  sslErrMsg = vmprintf(zFormat, ap);
  va_end(ap);
}

/*
** Return the current SSL error message
*/
const char *ssl_errmsg(void){
  return sslErrMsg;
}

/*
** When a server requests a client certificate that hasn't been provided,
** display a warning message explaining what to do next.
*/
static int ssl_client_cert_callback(SSL *ssl, X509 **x509, EVP_PKEY **pkey){
  fossil_warning("The remote server requested a client certificate for "
    "authentication. Specify the pathname to a file containing the PEM "
    "encoded certificate and private key with the --ssl-identity option "
    "or the ssl-identity setting.");
  return 0; /* no cert available */
}

/*
** Convert an OpenSSL ASN1_TIME to an ISO8601 timestamp.
**
** Per RFC 5280, ASN1 timestamps in X.509 certificates must
** be in UTC (Zulu timezone) with no fractional seconds.
**
** If showUtc==1, add " UTC" at the end of the returned string. This is
** not ISO8601-compliant, but makes the displayed value more user-friendly.
*/
static const char *ssl_asn1time_to_iso8601(ASN1_TIME *asn1_time,
                                           int showUtc){
  assert( showUtc==0 || showUtc==1 );
  if( !ASN1_TIME_check(asn1_time) ){
    return mprintf("Bad time value");
  }else{
    char res[20];
    char *pr = res;
    const char *pt = (char *)asn1_time->data;
    /*                   0123456789 1234
    **  UTCTime:         YYMMDDHHMMSSZ      (YY >= 50 ? 19YY : 20YY)
    **  GeneralizedTime: YYYYMMDDHHMMSSZ */
    if( asn1_time->length < 15 ){
      /* UTCTime, fill out century digits */
      *pr++ = pt[0]>='5' ? '1' : '2';
      *pr++ = pt[0]>='5' ? '9' : '0';
    }else{
      /* GeneralizedTime, copy century digits and advance source */
      *pr++ = pt[0]; *pr++ = pt[1];
      pt += 2;
    }
    *pr++ = pt[0]; *pr++ = pt[1]; *pr++ = '-';
    *pr++ = pt[2]; *pr++ = pt[3]; *pr++ = '-';
    *pr++ = pt[4]; *pr++ = pt[5]; *pr++ = ' ';
    *pr++ = pt[6]; *pr++ = pt[7]; *pr++ = ':';
    *pr++ = pt[8]; *pr++ = pt[9]; *pr++ = ':';
    *pr++ = pt[10]; *pr++ = pt[11]; *pr = '\0';
    return mprintf("%s%s", res, (showUtc ? " UTC" : ""));
  }
}

/*
** Call this routine once before any other use of the SSL interface.
** This routine does initial configuration of the SSL module.
*/
static void ssl_global_init_client(void){
  const char *identityFile;

  if( sslIsInit==0 ){
    const char *zFile;
    const char *zCaFile = 0;
    const char *zCaDirectory = 0;
    int i;

    SSL_library_init();
    SSL_load_error_strings();
    OpenSSL_add_all_algorithms();
    sslCtx = SSL_CTX_new(SSLv23_client_method());
    /* Disable SSLv2 and SSLv3 */
    SSL_CTX_set_options(sslCtx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3);

    /* Find the trust store */
    zFile = 0;
    for(i=0; zFile==0 && i<5; i++){
      switch( i ){
        case 0: /* First priority is environmentn variables */
          zFile = fossil_getenv(X509_get_default_cert_file_env());
          break;
        case 1:
          zFile = fossil_getenv(X509_get_default_cert_dir_env());
          break;
        case 2:
          if( !g.repositoryOpen ) db_open_config(0,0);
          zFile = db_get("ssl-ca-location",0);
          break;
        case 3:
          zFile = X509_get_default_cert_file();
          break;
        case 4:
          zFile = X509_get_default_cert_dir();
          break;
      }
      if( zFile==0 ) continue;
      switch( file_isdir(zFile, ExtFILE) ){
        case 0: { /* doesn't exist */
          zFile = 0;
          break;
        }
        case 1: { /* directory */
          zCaFile = 0;
          zCaDirectory = zFile;
          break;
        }
        case 2: { /* file */
          zCaFile = zFile;
          zCaDirectory = 0;
          break;
        }
      }
    }
    if( zFile==0 ){
      /* fossil_fatal("Cannot find a trust store"); */
    }else if( SSL_CTX_load_verify_locations(sslCtx, zCaFile, zCaDirectory)==0 ){
      fossil_fatal("Cannot load CA root certificates from %s", zFile);
    }

/* Enable OpenSSL to use the Windows system ROOT certificate store to search for
** certificates missing in the file and directory trust stores already loaded by
** `SSL_CTX_load_verify_locations()'.
** This feature was introduced with OpenSSL 3.2.0, and may be enabled by default
** for future versions of OpenSSL, and explicit initialization may be redundant.
** NOTE TO HACKERS TWEAKING THEIR OPENSSL CONFIGURATION:
** The following OpenSSL configuration options must not be used for this feature
** to be available: `no-autoalginit', `no-winstore'. The Fossil makefiles do not
** currently set these options when building OpenSSL for Windows. */
#if defined(_WIN32)
#if OPENSSL_VERSION_NUMBER >= 0x030200000
    if( SSL_CTX_load_verify_store(sslCtx, "org.openssl.winstore:")==0 ){
      fossil_print("NOTICE: Failed to load the Windows root certificates.\n");
    }
#endif /* OPENSSL_VERSION_NUMBER >= 0x030200000 */
#endif /* _WIN32 */

    /* Load client SSL identity, preferring the filename specified on the
    ** command line */
    if( g.zSSLIdentity!=0 ){
      identityFile = g.zSSLIdentity;
    }else{
      identityFile = db_get("ssl-identity", 0);
    }
    if( identityFile!=0 && identityFile[0]!='\0' ){
      if( SSL_CTX_use_certificate_chain_file(sslCtx,identityFile)!=1
       || SSL_CTX_use_PrivateKey_file(sslCtx,identityFile,SSL_FILETYPE_PEM)!=1
      ){
        fossil_fatal("Could not load SSL identity from %s", identityFile);
      }
    }
    /* Register a callback to tell the user what to do when the server asks
    ** for a cert */
    SSL_CTX_set_client_cert_cb(sslCtx, ssl_client_cert_callback);

    sslIsInit = 1;
  }else{
    assert( sslIsInit==1 );
  }
}

/*
** Call this routine to shutdown the SSL module prior to program exit.
*/
void ssl_global_shutdown(void){
  if( sslIsInit ){
    SSL_CTX_free(sslCtx);
    ssl_clear_errmsg();
    sslIsInit = 0;
  }
}

/*
** Close the currently open client SSL connection.  If no connection is open,
** this routine is a no-op.
*/
void ssl_close_client(void){
  if( iBio!=NULL ){
    (void)BIO_reset(iBio);
    BIO_free_all(iBio);
    iBio = NULL;
  }
}

/* See RFC2817 for details */
static int establish_proxy_tunnel(UrlData *pUrlData, BIO *bio){
  int rc, httpVerMin;
  char *bbuf;
  Blob snd, reply;
  int done=0,end=0;
  blob_zero(&snd);
  blob_appendf(&snd, "CONNECT %s:%d HTTP/1.1\r\n", pUrlData->hostname,
      pUrlData->proxyOrigPort);
  blob_appendf(&snd, "Host: %s:%d\r\n",
               pUrlData->hostname, pUrlData->proxyOrigPort);
  if( pUrlData->proxyAuth ){
    blob_appendf(&snd, "Proxy-Authorization: %s\r\n", pUrlData->proxyAuth);
  }
  blob_append(&snd, "Proxy-Connection: keep-alive\r\n", -1);
  blob_appendf(&snd, "User-Agent: %s\r\n", get_user_agent());
  blob_append(&snd, "\r\n", 2);
  BIO_write(bio, blob_buffer(&snd), blob_size(&snd));
  blob_reset(&snd);

  /* Wait for end of reply */
  blob_zero(&reply);
  do{
    int len;
    char buf[256];
    len = BIO_read(bio, buf, sizeof(buf));
    blob_append(&reply, buf, len);

    bbuf = blob_buffer(&reply);
    len = blob_size(&reply);
    while(end < len) {
      if( bbuf[end]=='\n' ) {
        if( (end+1<len && bbuf[end+1]=='\n')
         || (end+2<len && bbuf[end+1]=='\r' && bbuf[end+2]=='\n')
        ){
          done = 1;
          break;
        }
      }
      end++;
    }
  }while(!done);
  sscanf(bbuf, "HTTP/1.%d %d", &httpVerMin, &rc);
  blob_reset(&reply);
  return rc;
}

/*
** Invoke this routine to disable SSL cert verification.  After
** this call is made, any SSL cert that the server provides will
** be accepted.  Communication will still be encrypted, but the
** client has no way of knowing whether it is talking to the
** real server or a man-in-the-middle imposter.
*/
void ssl_disable_cert_verification(void){
  sslNoCertVerify = 1;
}

/*
** Open an SSL connection as a client that is to connect to the server
** identified by pUrlData.
**
*  The identify of the server is determined as follows:
**
**    pUrlData->name  Name of the server.  Ex: fossil-scm.org
**    g.url.name      Name of the proxy server, if proxying.
**    pUrlData->port  TCP/IP port to use.  Ex: 80
**
** Return the number of errors.
*/
int ssl_open_client(UrlData *pUrlData){
  X509 *cert;
  const char *zRemoteHost;

  ssl_global_init_client();
  if( pUrlData->useProxy ){
    int rc;
    char *connStr = mprintf("%s:%d", g.url.name, pUrlData->port);
    BIO *sBio = BIO_new_connect(connStr);
    free(connStr);
    if( BIO_do_connect(sBio)<=0 ){
      ssl_set_errmsg("SSL: cannot connect to proxy %s:%d (%s)",
            pUrlData->name, pUrlData->port,
            ERR_reason_error_string(ERR_get_error()));
      ssl_close_client();
      return 1;
    }
    rc = establish_proxy_tunnel(pUrlData, sBio);
    if( rc<200||rc>299 ){
      ssl_set_errmsg("SSL: proxy connect failed with HTTP status code %d", rc);
      return 1;
    }

    pUrlData->path = pUrlData->proxyUrlPath;

    iBio = BIO_new_ssl(sslCtx, 1);
    BIO_push(iBio, sBio);
    zRemoteHost = pUrlData->hostname;
  }else{
    iBio = BIO_new_ssl_connect(sslCtx);
    zRemoteHost = pUrlData->name;
  }
  if( iBio==NULL ) {
    ssl_set_errmsg("SSL: cannot open SSL (%s)",
                    ERR_reason_error_string(ERR_get_error()));
    return 1;
  }
  BIO_get_ssl(iBio, &ssl);

#if (SSLEAY_VERSION_NUMBER >= 0x00908070) && !defined(OPENSSL_NO_TLSEXT)
  if( !SSL_set_tlsext_host_name(ssl, zRemoteHost)){
    fossil_warning("WARNING: failed to set server name indication (SNI), "
                  "continuing without it.\n");
  }
#endif

  SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
#if OPENSSL_VERSION_NUMBER >= 0x010002000
  if( !sslNoCertVerify ){
    X509_VERIFY_PARAM *param = 0;
    param = SSL_get0_param(ssl);
    if( !X509_VERIFY_PARAM_set1_host(param, zRemoteHost, strlen(zRemoteHost)) ){
      fossil_fatal("failed to set hostname.");
    }
    /* SSL_set_verify(ssl, SSL_VERIFY_PEER, 0); */
  }
#endif

  if( !pUrlData->useProxy ){
    char *connStr = mprintf("%s:%d", pUrlData->name, pUrlData->port);
    BIO_set_conn_hostname(iBio, connStr);
    free(connStr);
    if( BIO_do_connect(iBio)<=0 ){
      ssl_set_errmsg("SSL: cannot connect to host %s:%d (%s)",
         pUrlData->name, pUrlData->port,
         ERR_reason_error_string(ERR_get_error()));
      ssl_close_client();
      return 1;
    }
  }

  if( BIO_do_handshake(iBio)<=0 ) {
    ssl_set_errmsg("Error establishing SSL connection %s:%d (%s)",
        pUrlData->useProxy?pUrlData->hostname:pUrlData->name,
        pUrlData->useProxy?pUrlData->proxyOrigPort:pUrlData->port,
        ERR_reason_error_string(ERR_get_error()));
    ssl_close_client();
    return 1;
  }
  /* Check if certificate is valid */
  cert = SSL_get_peer_certificate(ssl);

  if ( cert==NULL ){
    ssl_set_errmsg("No SSL certificate was presented by the peer");
    ssl_close_client();
    return 1;
  }

  /* Debugging hint:   On unix-like system, run something like:
  **
  **     SSL_CERT_DIR=/tmp  ./fossil sync
  **
  ** to cause certificate validation to fail, and thus test the fallback
  ** logic.
  */
  if( !sslNoCertVerify && SSL_get_verify_result(ssl)!=X509_V_OK ){
    int x, desclen;
    char *desc, *prompt;
    Blob ans;
    char cReply;
    BIO *mem;
    unsigned char md[EVP_MAX_MD_SIZE];
    char zHash[EVP_MAX_MD_SIZE*2+1];
    unsigned int mdLength = (int)sizeof(md);

    memset(md, 0, sizeof(md));
    zHash[0] = 0;
                            /*  MMNNFFPPS */
#if OPENSSL_VERSION_NUMBER >= 0x010000000
    x = X509_digest(cert, EVP_sha256(), md, &mdLength);
#else
    x = X509_digest(cert, EVP_sha1(), md, &mdLength);
#endif
    if( x ){
      unsigned j;
      for(j=0; j<mdLength && j*2+1<sizeof(zHash); ++j){
        zHash[j*2] = "0123456789abcdef"[md[j]>>4];
        zHash[j*2+1] = "0123456789abcdef"[md[j]&0xf];
      }
      zHash[j*2] = 0;
    }

    if( ssl_certificate_exception_exists(pUrlData, zHash) ){
      /* Ignore the failure because an exception exists */
      ssl_one_time_exception(pUrlData, zHash);
    }else{
      /* Tell the user about the failure and ask what to do */
      mem = BIO_new(BIO_s_mem());
      BIO_puts(mem,     "  subject:   ");
      X509_NAME_print_ex(mem, X509_get_subject_name(cert), 0, XN_FLAG_ONELINE);
      BIO_puts(mem,   "\n  issuer:    ");
      X509_NAME_print_ex(mem, X509_get_issuer_name(cert), 0, XN_FLAG_ONELINE);
      BIO_printf(mem, "\n  notBefore: %s",
                 ssl_asn1time_to_iso8601(X509_get_notBefore(cert), 1));
      BIO_printf(mem, "\n  notAfter:  %s",
                 ssl_asn1time_to_iso8601(X509_get_notAfter(cert), 1));
      BIO_printf(mem, "\n  sha256:    %s", zHash);
      desclen = BIO_get_mem_data(mem, &desc);

      prompt = mprintf("Unable to verify SSL cert from %s\n%.*s\n"
          "accept this cert and continue (y/N/fingerprint)? ",
          pUrlData->name, desclen, desc);
      BIO_free(mem);

      prompt_user(prompt, &ans);
      free(prompt);
      cReply = blob_str(&ans)[0];
      if( cReply!='y' && cReply!='Y'
       && fossil_stricmp(blob_str(&ans),zHash)!=0
      ){
        X509_free(cert);
        ssl_set_errmsg("SSL cert declined");
        ssl_close_client();
        blob_reset(&ans);
        return 1;
      }
      blob_reset(&ans);
      ssl_one_time_exception(pUrlData, zHash);
      prompt_user("remember this exception (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply=='y' || cReply=='Y') {
        db_open_config(0,0);
        ssl_remember_certificate_exception(pUrlData, zHash);
      }
      blob_reset(&ans);
    }
  }

  /* Set the Global.zIpAddr variable to the server we are talking to.
  ** This is used to populate the ipaddr column of the rcvfrom table,
  ** if any files are received from the server.
  */
  {
  /* As soon as libressl implements
  ** BIO_ADDR_hostname_string/BIO_get_conn_address.
  ** check here for the correct LIBRESSL_VERSION_NUMBER too. For now: disable
  */
#if defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000L \
      && !defined(LIBRESSL_VERSION_NUMBER)
    char *ip = BIO_ADDR_hostname_string(BIO_get_conn_address(iBio),1);
    g.zIpAddr = mprintf("%s", ip);
    OPENSSL_free(ip);
#else
    /* IPv4 only code */
    const unsigned char *ip;
    ip = (const unsigned char*)BIO_ptr_ctrl(iBio,BIO_C_GET_CONNECT,2);
    g.zIpAddr = mprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
#endif
  }

  X509_free(cert);
  return 0;
}

/*
** Remember that the cert with the given hash is acceptable for
** use with pUrlData->name.
*/
LOCAL void ssl_remember_certificate_exception(
  UrlData *pUrlData,
  const char *zHash
){
  db_set_mprintf(zHash, 1, "cert:%s", pUrlData->name);
}

/*
** Return true if the there exists a certificate exception for
** pUrlData->name that matches the hash.
*/
LOCAL int ssl_certificate_exception_exists(
  UrlData *pUrlData,
  const char *zHash
){
  char *zName, *zValue;
  if( fossil_strcmp(sException.zHost,pUrlData->name)==0
   && fossil_strcmp(sException.zHash,zHash)==0
  ){
    return 1;
  }
  zName = mprintf("cert:%s", pUrlData->name);
  zValue = db_get(zName,0);
  fossil_free(zName);
  return zValue!=0 && strcmp(zHash,zValue)==0;
}

/*
** Remember zHash as an acceptable certificate for this session only.
*/
LOCAL void ssl_one_time_exception(
  UrlData *pUrlData,
  const char *zHash
){
  fossil_free(sException.zHost);
  sException.zHost = fossil_strdup(pUrlData->name);
  fossil_free(sException.zHash);
  sException.zHash = fossil_strdup(zHash);
}

/*
** Send content out over the SSL connection from the client to
** the server.
*/
size_t ssl_send(void *NotUsed, void *pContent, size_t N){
  size_t total = 0;
  while( N>0 ){
    int sent = BIO_write(iBio, pContent, N);
    if( sent<=0 ){
      if( BIO_should_retry(iBio) ){
        continue;
      }
      break;
    }
    total += sent;
    N -= sent;
    pContent = (void*)&((char*)pContent)[sent];
  }
  return total;
}

/*
** Receive content back from the client SSL connection.  In other
** words read the reply back from the server.
*/
size_t ssl_receive(void *NotUsed, void *pContent, size_t N){
  size_t total = 0;
  while( N>0 ){
    int got = BIO_read(iBio, pContent, N);
    if( got<=0 ){
      if( BIO_should_retry(iBio) ){
        continue;
      }
      break;
    }
    total += got;
    N -= got;
    pContent = (void*)&((char*)pContent)[got];
  }
  return total;
}

/*
** Initialize the SSL library so that it is able to handle
** server-side connections.  Invoke fossil_fatal() if there are
** any problems.
**
** If zKeyFile and zCertFile are not NULL, then they are the names
** of disk files that hold the certificate and private-key for the
** server.  If zCertFile is not NULL but zKeyFile is NULL, then
** zCertFile is assumed to be a concatenation of the certificate and
** the private-key in the PEM format.
**
** If zCertFile is "unsafe-builtin", then a built-in self-signed cert
** is used.  This built-in cert is insecure and should only be used for
** testing and debugging.
*/
void ssl_init_server(const char *zCertFile, const char *zKeyFile){
  if( sslIsInit==0 && zCertFile ){
    SSL_library_init();
    SSL_load_error_strings();
    OpenSSL_add_all_algorithms();
    sslCtx = SSL_CTX_new(SSLv23_server_method());
    if( sslCtx==0 ){
      ERR_print_errors_fp(stderr);
      fossil_fatal("Error initializing the SSL server");
    }
    if( fossil_strcmp(zCertFile,"unsafe-builtin")==0 ){
      if( sslctx_use_cert_from_mem(sslCtx, sslSelfCert, -1)
       || sslctx_use_pkey_from_mem(sslCtx, sslSelfPKey, -1)
      ){
        fossil_fatal("Error loading self-signed CERT and KEY");
      }
    }else{
      if( SSL_CTX_use_certificate_chain_file(sslCtx,zCertFile)!=1 ){
        ERR_print_errors_fp(stderr);
        fossil_fatal("Error loading CERT file \"%s\"", zCertFile);
      }
      if( zKeyFile==0 ) zKeyFile = zCertFile;
      if( SSL_CTX_use_PrivateKey_file(sslCtx, zKeyFile, SSL_FILETYPE_PEM)<=0 ){
        ERR_print_errors_fp(stderr);
        if( strcmp(zKeyFile,zCertFile)==0 ){
          fossil_fatal("The private key is not found in \"%s\". "
            "Either append the private key to the certification in that "
            "file or use a separate --pkey option to specify the private key.",
            zKeyFile);
        }else{
          fossil_fatal("Error loading the private key from file \"%s\"",
             zKeyFile);
        }
      }
    }
    if( !SSL_CTX_check_private_key(sslCtx) ){
      fossil_fatal("PRIVATE KEY \"%s\" does not match CERT \"%s\"",
           zKeyFile, zCertFile);
    }
    SSL_CTX_set_mode(sslCtx, SSL_MODE_AUTO_RETRY);
    sslIsInit = 2;
  }else{
    assert( sslIsInit==2 );
  }
}

typedef struct SslServerConn {
  SSL *ssl;          /* The SSL codec */
  int iSocket;       /* The socket */
  BIO *bio;          /* BIO object. Needed for EOF detection. */
} SslServerConn;

/*
** Create a new server-side codec.  The argument is the socket's file
** descriptor from which the codec reads and writes. The returned
** memory must eventually be passed to ssl_close_server().
*/
void *ssl_new_server(int iSocket){
  SslServerConn *pServer = fossil_malloc_zero(sizeof(*pServer));
  BIO *b = BIO_new_socket(iSocket, 0);
  pServer->ssl = SSL_new(sslCtx);
  pServer->iSocket = iSocket;
  pServer->bio = b;
  SSL_set_bio(pServer->ssl, b, b);
  SSL_accept(pServer->ssl);
  return (void*)pServer;
}

/*
** Close a server-side code previously returned from ssl_new_server().
*/
void ssl_close_server(void *pServerArg){
  SslServerConn *pServer = (SslServerConn*)pServerArg;
  SSL_free(pServer->ssl);
  fossil_free(pServer);
}

/*
** Return TRUE if there are no more bytes available to be read from
** the client.
*/
int ssl_eof(void *pServerArg){
  SslServerConn *pServer = (SslServerConn*)pServerArg;
  return BIO_eof(pServer->bio);
}

/*
** Read cleartext bytes that have been received from the client and
** decrypted by the SSL server codec.
**
** If the expected payload size unknown, i.e. if the HTTP
** Content-Length: header field has not been parsed, the doLoop
** argument should be 0, or SSL_read() may block and wait for more
** data than is eventually going to arrive (on Windows). On
** non-Windows builds, it has been our experience that the final
** argument must always be true, as discussed at length at:
**
** https://fossil-scm.org/forum/forumpost/2f818850abb72719
*/
size_t ssl_read_server(void *pServerArg, char *zBuf, size_t nBuf, int doLoop){
  int n;
  size_t rc = 0;
  SslServerConn *pServer = (SslServerConn*)pServerArg;
  if( nBuf>0x7fffffff ){ fossil_fatal("SSL read too big"); }
  while( nBuf!=rc && BIO_eof(pServer->bio)==0 ){
    n = SSL_read(pServer->ssl, zBuf + rc, (int)(nBuf - rc));
    if( n>0 ){
      rc += n;
    }
    if( doLoop==0 || n<=0 ){
      break;
    }
  }
  return rc;
}

/*
** Read a single line of text from the client, up to nBuf-1 bytes. On
** success, writes nBuf-1 bytes to zBuf and NUL-terminates zBuf.
** Returns NULL on an I/O error or at EOF.
*/
char *ssl_gets(void *pServerArg, char *zBuf, int nBuf){
  int n = 0;
  int i;
  SslServerConn *pServer = (SslServerConn*)pServerArg;

  if( BIO_eof(pServer->bio) ) return 0;
  for(i=0; i<nBuf-1; i++){
    n = SSL_read(pServer->ssl, &zBuf[i], 1);
    if( n<=0 ){
      return 0;
    }
    if( zBuf[i]=='\n' ) break;
  }
  zBuf[i+1] = 0;
  return zBuf;
}


/*
** Write cleartext bytes into the SSL server codec so that they can
** be encrypted and sent back to the client.
*/
size_t ssl_write_server(void *pServerArg, char *zBuf, size_t nBuf){
  int n;
  SslServerConn *pServer = (SslServerConn*)pServerArg;
  if( nBuf<=0 ) return 0;
  if( nBuf>0x7fffffff ){ fossil_fatal("SSL write too big"); }
  n = SSL_write(pServer->ssl, zBuf, (int)nBuf);
  if( n<=0 ){
    return -SSL_get_error(pServer->ssl, n);
  }else{
    return n;
  }
}

#endif /* FOSSIL_ENABLE_SSL */

#ifdef FOSSIL_ENABLE_SSL
/*
** zPath is a name that might be a file or directory containing a trust
** store.  *pzStore is the name of the trust store to actually use.
**
** If *pzStore is not NULL (meaning no trust store has been found yet)
** and if zPath exists, then set *pzStore to point to zPath.
*/
static void trust_location_usable(const char *zPath, const char **pzStore){
  if( *pzStore!=0 ) return;
  if( file_isdir(zPath, ExtFILE)>0 ) *pzStore = zPath;
}
#endif /* FOSSIL_ENABLE_SSL */

/*
** COMMAND: tls-config*
** COMMAND: ssl-config
**
** Usage: %fossil ssl-config [SUBCOMMAND] [OPTIONS...] [ARGS...]
**
** This command is used to view or modify the TLS (Transport Layer
** Security) configuration for Fossil.  TLS (formerly SSL) is the
** encryption technology used for secure HTTPS transport.
**
** Sub-commands:
**
**   remove-exception DOMAINS    Remove TLS cert exceptions for the domains
**                               listed.  Or remove them all if the --all
**                               option is specified.
**
**   scrub ?--force?             Remove all SSL configuration data from the
**                               repository. Use --force to omit the
**                               confirmation.
**
**   show ?-v?                   Show the TLS configuration. Add -v to see
**                               additional explanation
*/
void test_tlsconfig_info(void){
  const char *zCmd;
  size_t nCmd;
  int nHit = 0;

  db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
  db_open_config(1,0);
  if( g.argc==2 || (g.argc>=3 && g.argv[2][0]=='-') ){
    zCmd = "show";
    nCmd = 4;
  }else{
    zCmd = g.argv[2];
    nCmd = strlen(zCmd);
  }
  if( strncmp("scrub",zCmd,nCmd)==0 && nCmd>4 ){
    int bForce = find_option("force","f",0)!=0;
    verify_all_options();
    if( !bForce ){
      Blob ans;
      char cReply;
      prompt_user(
        "Scrubbing the SSL configuration will permanently delete information.\n"
        "Changes cannot be undone.  Continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply!='y' && cReply!='Y' ){
        fossil_exit(1);
      }
    }
    db_unprotect(PROTECT_ALL);
    db_multi_exec(
      "PRAGMA secure_delete=ON;"
      "DELETE FROM config WHERE name GLOB 'ssl-*';"
    );
    db_protect_pop();
  }else
  if( strncmp("show",zCmd,nCmd)==0 ){
#if defined(FOSSIL_ENABLE_SSL)
    const char *zName, *zValue;
    const char *zUsed = 0;       /* Trust store location actually used */
    size_t nName;
#endif
    Stmt q;
    int verbose = find_option("verbose","v",0)!=0;
    verify_all_options();

#if !defined(FOSSIL_ENABLE_SSL)
    fossil_print("OpenSSL-version:      (none)\n");
    if( verbose ){
      fossil_print("\n"
         "  The OpenSSL library is not used by this build of Fossil\n\n"
      );
    }
#else
    fossil_print("OpenSSL-version:      %s  (0x%09x)\n",
         SSLeay_version(SSLEAY_VERSION), OPENSSL_VERSION_NUMBER);
    if( verbose ){
      fossil_print("\n"
         "  The version of the OpenSSL library being used\n"
         "  by this instance of Fossil.  Version 3.0.0 or\n"
         "  later is recommended.\n\n"
      );
    }

    fossil_print("Trust store location\n");
    zName = X509_get_default_cert_file_env();
    zValue = fossil_getenv(zName);
    if( zValue==0 ) zValue = "";
    trust_location_usable(zValue, &zUsed);
    nName = strlen(zName);
    fossil_print("  %s:%*s%s\n", zName, 19-nName, "", zValue);
    zName = X509_get_default_cert_dir_env();
    zValue = fossil_getenv(zName);
    if( zValue==0 ) zValue = "";
    trust_location_usable(zValue, &zUsed);
    nName = strlen(zName);
    fossil_print("  %s:%*s%s\n", zName, 19-nName, "", zValue);
    if( verbose ){
      fossil_print("\n"
        "    Environment variables that determine alternative locations for\n"
        "    the root certificates used by Fossil when it is acting as a SSL\n"
        "    client. If specified, these alternative locations take top\n"
        "    priority.\n\n"
      );
    }

    zValue = db_get("ssl-ca-location","");
    trust_location_usable(zValue, &zUsed);
    fossil_print("  ssl-ca-location:    %s\n", zValue);
    if( verbose ){
      fossil_print("\n"
         "    This setting is the name of a file or directory that contains\n"
         "    the complete set of root certificates used by Fossil when it\n"
         "    is acting as a SSL client. If defined, this setting takes\n"
         "    priority over built-in paths.\n\n"
      );
    }


    zValue = X509_get_default_cert_file();
    trust_location_usable(zValue, &zUsed);
    fossil_print("  OpenSSL-cert-file:  %s\n", zValue);
    zValue = X509_get_default_cert_dir();
    trust_location_usable(zValue, &zUsed);
    fossil_print("  OpenSSL-cert-dir:   %s\n", X509_get_default_cert_dir());
    if( verbose ){
      fossil_print("\n"
         "    The default locations for the set of root certificates\n"
         "    used by the \"fossil sync\" and similar commands to verify\n"
         "    the identity of servers for \"https:\" URLs. These values\n"
         "    come into play when Fossil is used as a TLS client.  These\n"
         "    values are built into your OpenSSL library.\n\n"
      );
    }

#if defined(_WIN32)
#if OPENSSL_VERSION_NUMBER >= 0x030200000
    fossil_print("  OpenSSL-winstore:   Yes\n");
#else /* OPENSSL_VERSION_NUMBER >= 0x030200000 */
    fossil_print("  OpenSSL-winstore:   No\n");
#endif /* OPENSSL_VERSION_NUMBER >= 0x030200000 */
    if( verbose ){
      fossil_print("\n"
         "    OpenSSL 3.2.0, or newer, use the root certificates managed by\n"
         "    the Windows operating system. The installed root certificates\n"
         "    are listed by the command:\n\n"
         "        certutil -store \"ROOT\"\n\n"
      );
    }
#endif /* _WIN32 */

    if( zUsed==0 ) zUsed = "";
    fossil_print("  Trust store used:   %s\n", zUsed);
    if( verbose ){
      fossil_print("\n"
         "    The location that is actually used for the root certificates\n"
         "    used to verify the identity of servers for \"https:\" URLs.\n"
         "    This will be one of the first of the five locations listed\n"
         "    above that actually exists.\n\n"
      );
    }


#endif /* FOSSIL_ENABLE_SSL */


    fossil_print("ssl-identity:        %s\n", db_get("ssl-identity",""));
    if( verbose ){
      fossil_print("\n"
        "  This setting is the name of a file that contains the PEM-format\n"
        "  certificate and private-key used by Fossil clients to authenticate\n"
        "  with servers. Few servers actually require this, so this setting\n"
        "  is usually blank.\n\n"
      );
    }

    db_prepare(&q,
       "SELECT name, '', value FROM global_config"
       " WHERE name GLOB 'cert:*'"
       "UNION ALL "
       "SELECT name, date(mtime,'unixepoch'), value FROM config"
       " WHERE name GLOB 'cert:*'"
       " ORDER BY name"
    );
    nHit = 0;
    while( db_step(&q)==SQLITE_ROW ){
                /*  123456789 123456789 123456789 */
      if( verbose ){
        fossil_print("exception:            %-40s %s\n"
                     "     hash:            %.57s\n",
             db_column_text(&q,0)+5, db_column_text(&q,1),
             db_column_text(&q,2));
      }else{
        fossil_print("exception:            %-40s %s\n",
             db_column_text(&q,0)+5, db_column_text(&q,1));
      }
      nHit++;
    }
    db_finalize(&q);
    if( nHit && verbose ){
      fossil_print("\n"
         "  The exceptions are server certificates that the Fossil client\n"
         "  is unable to verify using root certificates, but which should be\n"
         "  accepted anyhow.\n\n"
      );
    }

  }else
  if( strncmp("remove-exception",zCmd,nCmd)==0 ){
    int i;
    Blob sql;
    char *zSep = "(";
    db_begin_transaction();
    blob_init(&sql, 0, 0);
    if( g.argc==4 && find_option("all",0,0)!=0 ){
      blob_append_sql(&sql,
        "DELETE FROM global_config WHERE name GLOB 'cert:*';\n"
        "DELETE FROM global_config WHERE name GLOB 'trusted:*';\n"
        "DELETE FROM config WHERE name GLOB 'cert:*';\n"
        "DELETE FROM config WHERE name GLOB 'trusted:*';\n"
      );
    }else{
      if( g.argc<4 ){
        usage("remove-exception DOMAIN-NAME ...");
      }
      blob_append_sql(&sql,"DELETE FROM global_config WHERE name IN ");
      for(i=3; i<g.argc; i++){
        blob_append_sql(&sql,"%s'cert:%q','trust:%q'",
           zSep/*safe-for-%s*/, g.argv[i], g.argv[i]);
        zSep = ",";
      }
      blob_append_sql(&sql,");\n");
      zSep = "(";
      blob_append_sql(&sql,"DELETE FROM config WHERE name IN ");
      for(i=3; i<g.argc; i++){
        blob_append_sql(&sql,"%s'cert:%q','trusted:%q'",
           zSep/*safe-for-%s*/, g.argv[i], g.argv[i]);
        zSep = ",";
      }
      blob_append_sql(&sql,");");
    }
    db_unprotect(PROTECT_CONFIG);
    db_exec_sql(blob_str(&sql));
    db_protect_pop();
    db_commit_transaction();
    blob_reset(&sql);
  }else
  /*default*/{
    fossil_fatal("unknown sub-command \"%s\".\nshould be one of:"
                 " remove-exception scrub show",
       zCmd);
  }
}

/*
** WEBPAGE: .well-known
**
** If the "--acme" option was supplied to "fossil server" or "fossil http" or
** similar, then this page returns the content of files found in the
** ".well-known" subdirectory of the same directory that contains the
** repository file.  This facilitates Automated Certificate
** Management using tools like "certbot".
**
** The content is returned directly, without any interpretation, using
** a generic mimetype.
*/
void wellknown_page(void){
  char *zPath = 0;
  const char *zTail = P("name");
  Blob content;
  int i;
  char c;
  if( !g.fAllowACME ) goto wellknown_notfound;
  if( g.zRepositoryName==0 ) goto wellknown_notfound;
  if( zTail==0 ) goto wellknown_notfound;
  zPath = mprintf("%z/.well-known/%s", file_dirname(g.zRepositoryName), zTail);
  for(i=0; (c = zTail[i])!=0; i++){
    if( fossil_isalnum(c) ) continue;
    if( c=='.' ){
      if( i==0 || zTail[i-1]=='/' || zTail[i-1]=='.' ) goto wellknown_notfound;
      continue;
    }
    if( c==',' || c!='-' || c=='/' || c==':' || c=='_' || c=='~' ) continue;
    goto wellknown_notfound;
  }
  if( strstr("/..", zPath)!=0 ) goto wellknown_notfound;
  if( !file_isfile(zPath, ExtFILE) ) goto wellknown_notfound;
  blob_read_from_file(&content, zPath, ExtFILE);
  cgi_set_content(&content);
  cgi_set_content_type(mimetype_from_name(zPath));
  cgi_reply();
  return;

wellknown_notfound:
  fossil_free(zPath);
  webpage_notfound_error(0 /*works-like:""*/);
  return;
}

/*
** Return the OpenSSL version number being used.  Space to hold
** this name is obtained from fossil_malloc() and should be
** freed by the caller.
*/
char *fossil_openssl_version(void){
#if defined(FOSSIL_ENABLE_SSL)
  return mprintf("%s (0x%09x)\n",
         SSLeay_version(SSLEAY_VERSION), OPENSSL_VERSION_NUMBER);
#else
  return mprintf("none");
#endif
}
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*/
static struct {
  int isOpen;             /* True when the transport layer is open */
  char *pBuf;             /* Buffer used to hold the reply */
  int nAlloc;             /* Space allocated for transportBuf[] */
  int nUsed ;             /* Space of transportBuf[] used */
  int iCursor;            /* Next unread by in transportBuf[] */
  int nSent;              /* Number of bytes sent */
  int nRcvd;              /* Number of bytes received */
  i64 nSent;              /* Number of bytes sent */
  i64 nRcvd;              /* Number of bytes received */
  FILE *pFile;            /* File I/O for FILE: */
  char *zOutFile;         /* Name of outbound file for FILE: */
  char *zInFile;          /* Name of inbound file for FILE: */
  FILE *pLog;             /* Log output here */
} transport = {
  0, 0, 0, 0, 0, 0, 0
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

/*
** Information about the connection to the SSH subprocess when
** using the ssh:// sync method.
*/
static int sshPid;             /* Process id of ssh subprocess */
static int sshIn;              /* From ssh subprocess to this process */
static FILE *sshOut;           /* From this to ssh subprocess */


/*
** Return the current transport error message.
*/
const char *transport_errmsg(void){
const char *transport_errmsg(UrlData *pUrlData){
  #ifdef FOSSIL_ENABLE_SSL
  if( g.urlIsHttps ){
  if( pUrlData->isHttps ){
    return ssl_errmsg();
  }
  #endif
  return socket_errmsg();
}

/*
** Retrieve send/receive counts from the transport layer.  If "resetFlag"
** is true, then reset the counts.
*/
void transport_stats(int *pnSent, int *pnRcvd, int resetFlag){
void transport_stats(i64 *pnSent, i64 *pnRcvd, int resetFlag){
  if( pnSent ) *pnSent = transport.nSent;
  if( pnRcvd ) *pnRcvd = transport.nRcvd;
  if( resetFlag ){
    transport.nSent = 0;
    transport.nRcvd = 0;
  }
}

/*
** Check zFossil to see if it is a reasonable "fossil" command to
** run on the server.  Do not allow an attacker to substitute something
** like "/bin/rm".
*/
static int is_safe_fossil_command(const char *zFossil){
  static const char *const azSafe[] = { "*/fossil", "*/fossil.exe", "*/echo" };
  int i;
  for(i=0; i<(int)(sizeof(azSafe)/sizeof(azSafe[0])); i++){
    if( sqlite3_strglob(azSafe[i], zFossil)==0 ) return 1;
    if( strcmp(azSafe[i]+2, zFossil)==0 ) return 1;
  }
  return 0;
}

/*
** Default SSH command
*/
#if 0 /* was: defined(_WIN32).  Windows generally has ssh now. */
static const char zDefaultSshCmd[] = "plink -ssh";
#else
static const char zDefaultSshCmd[] = "ssh -e none";
#endif

/*
** Initialize a Blob to the name of the configured SSH command.
*/
void transport_ssh_command(Blob *p){
  char *zSsh;        /* The base SSH command */
  zSsh = db_get("ssh-command", zDefaultSshCmd);
  blob_init(p, zSsh, -1);
}

/*
** SSH initialization of the transport layer
*/
int transport_ssh_open(UrlData *pUrlData){
  /* For SSH we need to create and run SSH fossil http
  ** to talk to the remote machine.
  */
  Blob zCmd;         /* The SSH command */
  char *zHost;       /* The host name to contact */

  fossil_free(g.zIpAddr);
  g.zIpAddr = mprintf("%s", pUrlData->name);
  transport_ssh_command(&zCmd);
  if( pUrlData->port!=pUrlData->dfltPort && pUrlData->port ){
    blob_appendf(&zCmd, " -p %d", pUrlData->port);
  }
  blob_appendf(&zCmd, " -T --");  /* End of switches */
  if( pUrlData->user && pUrlData->user[0] ){
    zHost = mprintf("%s@%s", pUrlData->user, pUrlData->name);
    blob_append_escaped_arg(&zCmd, zHost, 0);
    fossil_free(zHost);
  }else{
    blob_append_escaped_arg(&zCmd, pUrlData->name, 0);
  }
  if( (pUrlData->flags & URL_SSH_EXE)!=0
   && !is_safe_fossil_command(pUrlData->fossil)
  ){
    fossil_fatal("the ssh:// URL is asking to run an unsafe command [%s] on "
                 "the server.", pUrlData->fossil);
  }
  if( (pUrlData->flags & URL_SSH_EXE)==0
   && (pUrlData->flags & URL_SSH_PATH)!=0 
  ){
    ssh_add_path_argument(&zCmd);
  }
  blob_append_escaped_arg(&zCmd, pUrlData->fossil, 1);
  blob_append(&zCmd, " test-http", 10);
  if( pUrlData->path && pUrlData->path[0] ){
    blob_append_escaped_arg(&zCmd, pUrlData->path, 1);
  }else{
    fossil_fatal("ssh:// URI does not specify a path to the repository");
  }
  if( g.fSshTrace || g.fHttpTrace ){
    fossil_print("RUN %s\n", blob_str(&zCmd));  /* Show the whole SSH command */
  }
  popen2(blob_str(&zCmd), &sshIn, &sshOut, &sshPid, 0);
  if( sshPid==0 ){
    socket_set_errmsg("cannot start ssh tunnel using [%b]", &zCmd);
  }
  blob_reset(&zCmd);
  return sshPid==0;
}

/*
** Open a connection to the server.  The server is defined by the following
** global variables:
** variables:
**
**   g.urlName        Name of the server.  Ex: www.fossil-scm.org
**   g.urlPort        TCP/IP port.  Ex: 80
**   g.urlIsHttps     Use TLS for the connection
**   pUrlData->name        Name of the server.  Ex: fossil-scm.org
**   pUrlData->port        TCP/IP port.  Ex: 80
**   pUrlData->isHttps     Use TLS for the connection
**
** Return the number of errors.
*/
int transport_open(void){
int transport_open(UrlData *pUrlData){
  int rc = 0;
  if( transport.isOpen==0 ){
    if( pUrlData->isSsh ){
      rc = transport_ssh_open(pUrlData);
      if( rc==0 ) transport.isOpen = 1;
    if( g.urlIsHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      rc = ssl_open();
    }else if( pUrlData->isHttps ){
#ifdef FOSSIL_ENABLE_SSL
      rc = ssl_open_client(pUrlData);
      if( rc==0 ) transport.isOpen = 1;
      #else
#else
      socket_set_errmsg("HTTPS: Fossil has been compiled without SSL support");
      rc = 1;
      #endif
    }else if( g.urlIsFile ){
#endif
    }else if( pUrlData->isFile ){
      sqlite3_uint64 iRandId;
      sqlite3_randomness(sizeof(iRandId), &iRandId);
      transport.zOutFile = mprintf("%s-%llu-out.http", 
      if( !db_looks_like_a_repository(pUrlData->name) ){
        fossil_fatal("not a fossil repository: \"%s\"", pUrlData->name);
      }
      transport.zOutFile = fossil_temp_filename();
                                       g.zRepositoryName, iRandId);
      transport.zInFile = mprintf("%s-%llu-in.http", 
      transport.zInFile = fossil_temp_filename();
                                       g.zRepositoryName, iRandId);
      transport.pFile = fopen(transport.zOutFile, "wb");
      transport.pFile = fossil_fopen(transport.zOutFile, "wb");
      if( transport.pFile==0 ){
        fossil_fatal("cannot output temporary file: %s", transport.zOutFile);
      }
      transport.isOpen = 1;
    }else{
      rc = socket_open();
      rc = socket_open(pUrlData);
      if( rc==0 ) transport.isOpen = 1;
    }
  }
  return rc;
}

/*
** Close the current connection
*/
void transport_close(void){
void transport_close(UrlData *pUrlData){
  if( transport.isOpen ){
    free(transport.pBuf);
    transport.pBuf = 0;
    transport.nAlloc = 0;
    transport.nUsed = 0;
    transport.iCursor = 0;
    if( transport.pLog ){
      fclose(transport.pLog);
      transport.pLog = 0;
    }
    if( pUrlData->isSsh ){
      transport_ssh_close();
    if( g.urlIsHttps ){
    }else if( pUrlData->isHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      ssl_close();
      ssl_close_client();
      #endif
    }else if( g.urlIsFile ){
      if( transport.pFile ){ 
    }else if( pUrlData->isFile ){
      if( transport.pFile ){
        fclose(transport.pFile);
        transport.pFile = 0;
      }
      unlink(transport.zInFile);
      unlink(transport.zOutFile);
      free(transport.zInFile);
      free(transport.zOutFile);
      file_delete(transport.zInFile);
      file_delete(transport.zOutFile);
      sqlite3_free(transport.zInFile);
      sqlite3_free(transport.zOutFile);
    }else{
      socket_close();
    }
    transport.isOpen = 0;
  }
}

/*
** Send content over the wire.
*/
void transport_send(Blob *toSend){
void transport_send(UrlData *pUrlData, Blob *toSend){
  char *z = blob_buffer(toSend);
  int n = blob_size(toSend);
  transport.nSent += n;
  if( pUrlData->isSsh ){
    fwrite(z, 1, n, sshOut);
    fflush(sshOut);
  if( g.urlIsHttps ){
    #ifdef FOSSIL_ENABLE_SSL
  }else if( pUrlData->isHttps ){
#ifdef FOSSIL_ENABLE_SSL
    int sent;
    while( n>0 ){
      sent = ssl_send(0, z, n);
      /* printf("Sent %d of %d bytes\n", sent, n); fflush(stdout); */
      if( sent<=0 ) break;
      n -= sent;
    }    
    #endif
  }else if( g.urlIsFile ){
    }
#endif
  }else if( pUrlData->isFile ){
    fwrite(z, 1, n, transport.pFile);
  }else{
    int sent;
    while( n>0 ){
      sent = socket_send(0, z, n);
      /* printf("Sent %d of %d bytes\n", sent, n); fflush(stdout); */
      if( sent<=0 ) break;
      n -= sent;
    }
  }
}

/*
** This routine is called when the outbound message is complete and
** it is time to being recieving a reply.
** it is time to begin receiving a reply.
*/
void transport_flip(void){
  if( g.urlIsFile ){
void transport_flip(UrlData *pUrlData){
  if( pUrlData->isFile ){
    char *zCmd;
    fclose(transport.pFile);
    zCmd = mprintf("\"%s\" http \"%s\" \"%s\" \"%s\" 127.0.0.1",
       g.argv[0], g.urlName, transport.zOutFile, transport.zInFile
    zCmd = mprintf("%$ http --in %$ --out %$ --ipaddr 127.0.0.1"
                   " %$ --localauth",
       g.nameOfExe, transport.zOutFile, transport.zInFile, pUrlData->name
    );
    if( g.fHttpTrace ) fossil_print("RUN %s\n", zCmd);
    portable_system(zCmd);
    fossil_system(zCmd);
    free(zCmd);
    transport.pFile = fopen(transport.zInFile, "rb");
    transport.pFile = fossil_fopen(transport.zInFile, "rb");
  }
}

/*
** Log all input to a file.  The transport layer will take responsibility
** for closing the log file when it is done.
*/
void transport_log(FILE *pLog){
  if( transport.pLog ){
    fclose(transport.pLog);
    transport.pLog = 0;
  }
  transport.pLog = pLog;
}

/*
** This routine is called when the inbound message has been received
** and it is time to start sending again.
*/
void transport_rewind(void){
  if( g.urlIsFile ){
    transport_close();
void transport_rewind(UrlData *pUrlData){
  if( pUrlData->isFile ){
    transport_close(pUrlData);
  }
}

/*
** Read N bytes of content directly from the wire and write into
** the buffer.
*/
static int transport_fetch(UrlData *pUrlData, char *zBuf, int N){
  int got;
  if( pUrlData->isSsh ){
    int x;
    int wanted = N;
    got = 0;
    while( wanted>0 ){
      x = read(sshIn, &zBuf[got], wanted);
      if( x<=0 ) break;
      got += x;
      wanted -= x;
    }
  }else if( pUrlData->isHttps ){
    #ifdef FOSSIL_ENABLE_SSL
    got = ssl_receive(0, zBuf, N);
    #else
    got = 0;
    #endif
  }else if( pUrlData->isFile ){
    got = fread(zBuf, 1, N, transport.pFile);
  }else{
    got = socket_receive(0, zBuf, N, 0);
  }
  /* printf("received %d of %d bytes\n", got, N); fflush(stdout); */
  if( transport.pLog ){
    fwrite(zBuf, 1, got, transport.pLog);
    fflush(transport.pLog);
  }
  return got;
}

/*
** Read N bytes of content from the wire and store in the supplied buffer.
** Return the number of bytes actually received.
*/
int transport_receive(char *zBuf, int N){
int transport_receive(UrlData *pUrlData, char *zBuf, int N){
  int onHand;       /* Bytes current held in the transport buffer */
  int nByte = 0;    /* Bytes of content received */

  onHand = transport.nUsed - transport.iCursor;
  if( g.fSshTrace){
    printf("Reading %d bytes with %d on hand...  ", N, onHand);
    fflush(stdout);
  }
  if( onHand>0 ){
    int toMove = onHand;
    if( toMove>N ) toMove = N;
    /* printf("bytes on hand: %d of %d\n", toMove, N); fflush(stdout); */
    memcpy(zBuf, &transport.pBuf[transport.iCursor], toMove);
    transport.iCursor += toMove;
    if( transport.iCursor>=transport.nUsed ){
      transport.nUsed = 0;
      transport.iCursor = 0;
    }
    N -= toMove;
    zBuf += toMove;
    nByte += toMove;
  }
  if( N>0 ){
    int got;
    int got = transport_fetch(pUrlData, zBuf, N);
    if( g.urlIsHttps ){
      #ifdef FOSSIL_ENABLE_SSL
      got = ssl_receive(0, zBuf, N);
      /* printf("received %d of %d bytes\n", got, N); fflush(stdout); */
      #else
      got = 0;
      #endif
    }else if( g.urlIsFile ){
      got = fread(zBuf, 1, N, transport.pFile);
    }else{
      got = socket_receive(0, zBuf, N);
      /* printf("received %d of %d bytes\n", got, N); fflush(stdout); */
    }
    if( got>0 ){
      nByte += got;
      transport.nRcvd += got;
    }
  }
  if( g.fSshTrace ) printf("Got %d bytes\n", nByte);
  return nByte;
}

/*
** Load up to N new bytes of content into the transport.pBuf buffer.
** The buffer itself might be moved.  And the transport.iCursor value
** might be reset to 0.
*/
static void transport_load_buffer(int N){
static void transport_load_buffer(UrlData *pUrlData, int N){
  int i, j;
  if( transport.nAlloc==0 ){
    transport.nAlloc = N;
    transport.pBuf = malloc( N );
    transport.pBuf = fossil_malloc( N );
    if( transport.pBuf==0 ) fossil_panic("out of memory");
    transport.iCursor = 0;
    transport.nUsed = 0;
  }
  if( transport.iCursor>0 ){
    for(i=0, j=transport.iCursor; j<transport.nUsed; i++, j++){
      transport.pBuf[i] = transport.pBuf[j];
    }
    transport.nUsed -= transport.iCursor;
    transport.iCursor = 0;
  }
  if( transport.nUsed + N > transport.nAlloc ){
    char *pNew;
    transport.nAlloc = transport.nUsed + N;
    pNew = realloc(transport.pBuf, transport.nAlloc);
    pNew = fossil_realloc(transport.pBuf, transport.nAlloc);
    if( pNew==0 ) fossil_panic("out of memory");
    transport.pBuf = pNew;
  }
  if( N>0 ){
    i = transport_receive(&transport.pBuf[transport.nUsed], N);
    i = transport_fetch(pUrlData, &transport.pBuf[transport.nUsed], N);
    if( i>0 ){
      transport.nRcvd += i;
      transport.nUsed += i;
    }
  }
}

/*
** Fetch a single line of input where a line is all text up to the next
** \n character or until the end of input.  Remove all trailing whitespace
** from the received line and zero-terminate the result.  Return a pointer
** to the line.
**
** Each call to this routine potentially overwrites the returned buffer.
*/
char *transport_receive_line(void){
char *transport_receive_line(UrlData *pUrlData){
  int i;
  int iStart;

  i = iStart = transport.iCursor;
  while(1){
    if( i >= transport.nUsed ){
      transport_load_buffer(1000);
      transport_load_buffer(pUrlData, pUrlData->isSsh ? 2 : 1000);
      i -= iStart;
      iStart = 0;
      if( i >= transport.nUsed ){
        transport.pBuf[i] = 0;
        transport.iCursor = i;
        break;
      }
    }
    if( transport.pBuf[i]=='\n' ){
      transport.iCursor = i+1;
      while( i>=iStart && isspace(transport.pBuf[i]) ){
      while( i>=iStart && fossil_isspace(transport.pBuf[i]) ){
        transport.pBuf[i] = 0;
        i--;
      }
      break;
    }
    i++;
  }
  /* printf("Got line: [%s]\n", &transport.pBuf[iStart]); */
  if( g.fSshTrace ) printf("Got line: [%s]\n", &transport.pBuf[iStart]);
  return &transport.pBuf[iStart];
}

/*
** Global transport shutdown
*/
void transport_global_shutdown(void){
  if( g.urlIsHttps ){
void transport_global_shutdown(UrlData *pUrlData){
  if( pUrlData->isSsh ){
    transport_ssh_close();
  }
  if( pUrlData->isHttps ){
    #ifdef FOSSIL_ENABLE_SSL
    ssl_global_shutdown();
    #endif
  }else{
    socket_global_shutdown();
  }
}

/*
** Close SSH transport.
*/
void transport_ssh_close(void){
  if( sshPid ){
    /*printf("Closing SSH tunnel: ");*/
    fflush(stdout);
    pclose2(sshIn, sshOut, sshPid);
    sshPid = 0;
  }
}
Added src/import.c.













































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to import the content of a Git/SVN
** repository in the git-fast-import/svn-dump formats as a new Fossil
** repository.
*/
#include "config.h"
#include "import.h"
#include <assert.h>

#if INTERFACE
/*
** A single file change record.
*/
struct ImportFile {
  char *zName;           /* Name of a file */
  char *zUuid;           /* Hash of the file */
  char *zPrior;          /* Prior name if the name was changed */
  char isFrom;           /* True if obtained from the parent */
  char isExe;            /* True if executable */
  char isLink;           /* True if symlink */
};
#endif

/*
** State information common to all import types.
*/
static struct {
  const char *zTrunkName;     /* Name of trunk branch */
  const char *zBranchPre;     /* Prepended to non-trunk branch names */
  const char *zBranchSuf;     /* Appended to non-trunk branch names */
  const char *zTagPre;        /* Prepended to non-trunk tag names */
  const char *zTagSuf;        /* Appended to non-trunk tag names */
} gimport;

/*
** State information about an on-going fast-import parse.
*/
static struct {
  void (*xFinish)(void);      /* Function to finish a prior record */
  int nData;                  /* Bytes of data */
  char *zTag;                 /* Name of a tag */
  char *zBranch;              /* Name of a branch for a commit */
  char *zPrevBranch;          /* The branch of the previous check-in */
  char *aData;                /* Data content */
  char *zMark;                /* The current mark */
  char *zDate;                /* Date/time stamp */
  char *zUser;                /* User name */
  char *zComment;             /* Comment of a commit */
  char *zFrom;                /* from value as a hash */
  char *zPrevCheckin;         /* Name of the previous check-in */
  char *zFromMark;            /* The mark of the "from" field */
  int nMerge;                 /* Number of merge values */
  int nMergeAlloc;            /* Number of slots in azMerge[] */
  char **azMerge;             /* Merge values */
  int nFile;                  /* Number of aFile values */
  int nFileAlloc;             /* Number of slots in aFile[] */
  ImportFile *aFile;          /* Information about files in a commit */
  ImportFile *pInlineFile;    /* File marked "inline" */
  int fromLoaded;             /* True zFrom content loaded into aFile[] */
  int tagCommit;              /* True if the commit adds a tag */
} gg;

/*
** A no-op "xFinish" method
*/
static void finish_noop(void){}

/*
** Deallocate the state information.
**
** The azMerge[] and aFile[] arrays are zeroed by allocated space is
** retained unless the freeAll flag is set.
*/
static void import_reset(int freeAll){
  int i;
  gg.xFinish = 0;
  fossil_free(gg.zTag); gg.zTag = 0;
  fossil_free(gg.zBranch); gg.zBranch = 0;
  fossil_free(gg.aData); gg.aData = 0;
  fossil_free(gg.zMark); gg.zMark = 0;
  fossil_free(gg.zDate); gg.zDate = 0;
  fossil_free(gg.zUser); gg.zUser = 0;
  fossil_free(gg.zComment); gg.zComment = 0;
  fossil_free(gg.zFrom); gg.zFrom = 0;
  fossil_free(gg.zFromMark); gg.zFromMark = 0;
  for(i=0; i<gg.nMerge; i++){
    fossil_free(gg.azMerge[i]); gg.azMerge[i] = 0;
  }
  gg.nMerge = 0;
  for(i=0; i<gg.nFile; i++){
    fossil_free(gg.aFile[i].zName);
    fossil_free(gg.aFile[i].zUuid);
    fossil_free(gg.aFile[i].zPrior);
  }
  memset(gg.aFile, 0, gg.nFile*sizeof(gg.aFile[0]));
  gg.nFile = 0;
  if( freeAll ){
    fossil_free(gg.zPrevBranch);
    fossil_free(gg.zPrevCheckin);
    fossil_free(gg.azMerge);
    fossil_free(gg.aFile);
    memset(&gg, 0, sizeof(gg));
  }
  gg.xFinish = finish_noop;
}

/*
** Insert an artifact into the BLOB table if it isn't there already.
** If zMark is not zero, create a cross-reference from that mark back
** to the newly inserted artifact.
**
** If saveHash is true, then pContent is a commit record.  Record its
** artifact hash in gg.zPrevCheckin.
*/
static int fast_insert_content(
  Blob *pContent,          /* Content to insert */
  const char *zMark,       /* Label using this mark, if not NULL */
  ImportFile *pFile,       /* Save hash on this file, if not NULL */
  int saveHash,            /* Save artifact hash in gg.zPrevCheckin */
  int doParse              /* Invoke manifest_crosslink() */
){
  Blob hash;
  Blob cmpr;
  int rid;

  hname_hash(pContent, 0, &hash);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &hash);
  if( rid==0 ){
    static Stmt ins;
    assert( g.rcvid>0 );
    db_static_prepare(&ins,
        "INSERT INTO blob(uuid, size, rcvid, content)"
        "VALUES(:uuid, :size, %d, :content)", g.rcvid
    );
    db_bind_text(&ins, ":uuid", blob_str(&hash));
    db_bind_int(&ins, ":size", gg.nData);
    blob_compress(pContent, &cmpr);
    db_bind_blob(&ins, ":content", &cmpr);
    db_step(&ins);
    db_reset(&ins);
    blob_reset(&cmpr);
    rid = db_last_insert_rowid();
    if( doParse ){
      manifest_crosslink(rid, pContent, MC_NONE);
    }
  }
  if( zMark ){
    db_multi_exec(
        "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
        "VALUES(%Q,%d,%B)",
        zMark, rid, &hash
    );
    db_multi_exec(
        "INSERT OR IGNORE INTO xmark(tname, trid, tuuid)"
        "VALUES(%B,%d,%B)",
        &hash, rid, &hash
    );
  }
  if( saveHash ){
    fossil_free(gg.zPrevCheckin);
    gg.zPrevCheckin = fossil_strdup(blob_str(&hash));
  }
  if( pFile ){
    fossil_free(pFile->zUuid);
    pFile->zUuid = fossil_strdup(blob_str(&hash));
  }
  blob_reset(&hash);
  return rid;
}

/*
** Check to ensure the file in gg.aData,gg.nData is not a control
** artifact.  Then add the file to the repository.
*/
static void check_and_add_file(const char *zMark, ImportFile *pFile){
  Blob content;
  blob_init(&content, gg.aData, gg.nData);
  if( gg.nData && manifest_is_well_formed(gg.aData, gg.nData) ){
    sterilize_manifest(&content, -1);
  }
  fast_insert_content(&content, zMark, pFile, 0, 0);
  blob_reset(&content);
}

/*
** Use data accumulated in gg from a "blob" record to add a new file
** to the BLOB table.
*/
static void finish_blob(void){
  check_and_add_file(gg.zMark, 0);
  import_reset(0);
}

/*
** Use data accumulated in gg from a "tag" record to add a new
** control artifact to the BLOB table.
*/
static void finish_tag(void){
  if( gg.zDate && gg.zTag && gg.zFrom && gg.zUser ){
    Blob record, cksum;
    blob_zero(&record);
    blob_appendf(&record, "D %s\n", gg.zDate);
    blob_appendf(&record, "T +sym-%F%F%F %s", gimport.zTagPre, gg.zTag,
        gimport.zTagSuf, gg.zFrom);
    if( gg.zComment ){
      blob_appendf(&record, " %F", gg.zComment);
    }
    blob_appendf(&record, "\nU %F\n", gg.zUser);
    md5sum_blob(&record, &cksum);
    blob_appendf(&record, "Z %b\n", &cksum);
    fast_insert_content(&record, 0, 0, 0, 1);
    blob_reset(&cksum);
    blob_reset(&record);
  }
  import_reset(0);
}

/*
** Compare two ImportFile objects for sorting
*/
static int mfile_cmp(const void *pLeft, const void *pRight){
  const ImportFile *pA = (const ImportFile*)pLeft;
  const ImportFile *pB = (const ImportFile*)pRight;
  return fossil_strcmp(pA->zName, pB->zName);
}

/*
** Compare two strings for sorting.
*/
static int string_cmp(const void *pLeft, const void *pRight){
  const char *zLeft = *(const char **)pLeft;
  const char *zRight = *(const char **)pRight;
  return fossil_strcmp(zLeft, zRight);
}

/* Forward reference */
static void import_prior_files(void);

/*
** Use data accumulated in gg from a "commit" record to add a new
** manifest artifact to the BLOB table.
*/
static void finish_commit(void){
  int i;
  char *zFromBranch;
  char *aTCard[4];                /* Array of T cards for manifest */
  int nTCard = 0;                 /* Entries used in aTCard[] */
  Blob record, cksum;

  import_prior_files();
  qsort(gg.aFile, gg.nFile, sizeof(gg.aFile[0]), mfile_cmp);
  blob_zero(&record);
  blob_appendf(&record, "C %F\n", gg.zComment);
  blob_appendf(&record, "D %s\n", gg.zDate);
  if( !g.fQuiet ){
    fossil_print("%.10s\r", gg.zDate);
    fflush(stdout);
  }
  for(i=0; i<gg.nFile; i++){
    const char *zUuid = gg.aFile[i].zUuid;
    if( zUuid==0 ) continue;
    blob_appendf(&record, "F %F %s", gg.aFile[i].zName, zUuid);
    if( gg.aFile[i].isExe ){
      blob_append(&record, " x", 2);
    }else if( gg.aFile[i].isLink ){
      blob_append(&record, " l", 2);
    }else{
      blob_append(&record, " w", 2);
    }
    if( gg.aFile[i].zPrior!=0 ){
      blob_appendf(&record, " %F", gg.aFile[i].zPrior);
    }
    blob_append(&record, "\n", 1);
  }
  if( gg.zFrom ){
    blob_appendf(&record, "P %s", gg.zFrom);
    for(i=0; i<gg.nMerge; i++){
      blob_appendf(&record, " %s", gg.azMerge[i]);
    }
    blob_append(&record, "\n", 1);
    zFromBranch = db_text(0, "SELECT brnm FROM xbranch WHERE tname=%Q",
                              gg.zFromMark);
  }else{
    zFromBranch = 0;
  }

  /* Add the required "T" cards to the manifest. Make sure they are added
  ** in sorted order and without any duplicates. Otherwise, fossil will not
  ** recognize the document as a valid manifest. */
  if( !gg.tagCommit && fossil_strcmp(zFromBranch, gg.zBranch)!=0 ){
    aTCard[nTCard++] = mprintf("T *branch * %F%F%F\n", gimport.zBranchPre,
        gg.zBranch, gimport.zBranchSuf);
    aTCard[nTCard++] = mprintf("T *sym-%F%F%F *\n", gimport.zBranchPre,
        gg.zBranch, gimport.zBranchSuf);
    if( zFromBranch ){
      aTCard[nTCard++] = mprintf("T -sym-%F%F%F *\n", gimport.zBranchPre,
          zFromBranch, gimport.zBranchSuf);
    }
  }
  if( gg.zFrom==0 ){
    aTCard[nTCard++] = mprintf("T *sym-%F *\n", gimport.zTrunkName);
  }
  qsort(aTCard, nTCard, sizeof(char *), string_cmp);
  for(i=0; i<nTCard; i++){
    if( i==0 || fossil_strcmp(aTCard[i-1], aTCard[i]) ){
      blob_appendf(&record, "%s", aTCard[i]);
    }
  }
  for(i=0; i<nTCard; i++) free(aTCard[i]);

  free(zFromBranch);
  db_multi_exec("INSERT INTO xbranch(tname, brnm) VALUES(%Q,%Q)",
                gg.zMark, gg.zBranch);
  blob_appendf(&record, "U %F\n", gg.zUser);
  md5sum_blob(&record, &cksum);
  blob_appendf(&record, "Z %b\n", &cksum);
  fast_insert_content(&record, gg.zMark, 0, 1, 1);
  blob_reset(&cksum);

  /* The "git fast-export" command might output multiple "commit" lines
  ** that reference a tag using "refs/tags/TAGNAME".  The tag should only
  ** be applied to the last commit that is output.  The problem is we do not
  ** know at this time if the current commit is the last one to hold this
  ** tag or not.  So make an entry in the XTAG table to record this tag
  ** but overwrite that entry if a later instance of the same tag appears.
  **
  ** This behavior seems like a bug in git-fast-export, but it is easier
  ** to work around the problem than to fix git-fast-export.
  */
  if( gg.tagCommit && gg.zDate && gg.zUser && gg.zFrom ){
    record.nUsed = 0
      /*in case fast_insert_comment() did not indirectly blob_reset() it */;
    blob_appendf(&record, "D %s\n", gg.zDate);
    blob_appendf(&record, "T +sym-%F%F%F %s\n", gimport.zBranchPre, gg.zBranch,
        gimport.zBranchSuf, gg.zPrevCheckin);
    blob_appendf(&record, "U %F\n", gg.zUser);
    md5sum_blob(&record, &cksum);
    blob_appendf(&record, "Z %b\n", &cksum);
    db_multi_exec(
       "INSERT OR REPLACE INTO xtag(tname, tcontent)"
       " VALUES(%Q,%Q)", gg.zBranch, blob_str(&record)
    );
    blob_reset(&cksum);
  }

  blob_reset(&record);
  fossil_free(gg.zPrevBranch);
  gg.zPrevBranch = gg.zBranch;
  gg.zBranch = 0;
  import_reset(0);
}

/*
** Turn the first \n in the input string into a \000
*/
static void trim_newline(char *z){
  while( z[0] && z[0]!='\n' ){ z++; }
  z[0] = 0;
}

/*
** Get a token from a line of text.  Return a pointer to the first
** character of the token and zero-terminate the token.  Make
** *pzIn point to the first character past the end of the zero
** terminator, or at the zero-terminator at EOL.
*/
static char *next_token(char **pzIn){
  char *z = *pzIn;
  int i;
  if( z[0]==0 ) return z;
  for(i=0; z[i] && z[i]!=' ' && z[i]!='\n'; i++){}
  if( z[i] ){
    z[i] = 0;
    *pzIn = &z[i+1];
  }else{
    *pzIn = &z[i];
  }
  return z;
}

/*
** Return a token that is all text up to (but omitting) the next \n
** or \r\n.
*/
static char *rest_of_line(char **pzIn){
  char *z = *pzIn;
  int i;
  if( z[0]==0 ) return z;
  for(i=0; z[i] && z[i]!='\r' && z[i]!='\n'; i++){}
  if( z[i] ){
    if( z[i]=='\r' && z[i+1]=='\n' ){
      z[i] = 0;
      i++;
    }else{
      z[i] = 0;
    }
    *pzIn = &z[i+1];
  }else{
    *pzIn = &z[i];
  }
  return z;
}

/*
** Convert a "mark" or "committish" into the artifact hash.
*/
static char *resolve_committish(const char *zCommittish){
  char *zRes;

  zRes = db_text(0, "SELECT tuuid FROM xmark WHERE tname=%Q", zCommittish);
  return zRes;
}

/*
** Create a new entry in the gg.aFile[] array
*/
static ImportFile *import_add_file(void){
  ImportFile *pFile;
  if( gg.nFile>=gg.nFileAlloc ){
    gg.nFileAlloc = gg.nFileAlloc*2 + 100;
    gg.aFile = fossil_realloc(gg.aFile, gg.nFileAlloc*sizeof(gg.aFile[0]));
  }
  pFile = &gg.aFile[gg.nFile++];
  memset(pFile, 0, sizeof(*pFile));
  return pFile;
}


/*
** Load all file information out of the gg.zFrom check-in
*/
static void import_prior_files(void){
  Manifest *p;
  int rid;
  ManifestFile *pOld;
  ImportFile *pNew;
  if( gg.fromLoaded ) return;
  gg.fromLoaded = 1;
  if( gg.zFrom==0 && gg.zPrevCheckin!=0
   && fossil_strcmp(gg.zBranch, gg.zPrevBranch)==0
  ){
     gg.zFrom = gg.zPrevCheckin;
     gg.zPrevCheckin = 0;
  }
  if( gg.zFrom==0 ) return;
  rid = fast_uuid_to_rid(gg.zFrom);
  if( rid==0 ) return;
  p = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( p==0 ) return;
  manifest_file_rewind(p);
  while( (pOld = manifest_file_next(p, 0))!=0 ){
    pNew = import_add_file();
    pNew->zName = fossil_strdup(pOld->zName);
    pNew->isExe = pOld->zPerm && strstr(pOld->zPerm, "x")!=0;
    pNew->isLink = pOld->zPerm && strstr(pOld->zPerm, "l")!=0;
    pNew->zUuid = fossil_strdup(pOld->zUuid);
    pNew->isFrom = 1;
  }
  manifest_destroy(p);
}

/*
** Locate a file in the gg.aFile[] array by its name.  Begin the search
** with the *pI-th file.  Update *pI to be one past the file found.
** Do not search past the mx-th file.
*/
static ImportFile *import_find_file(const char *zName, int *pI, int mx){
  int i = *pI;
  int nName = strlen(zName);
  while( i<mx ){
    const char *z = gg.aFile[i].zName;
    if( strncmp(zName, z, nName)==0 && (z[nName]==0 || z[nName]=='/') ){
      *pI = i+1;
      return &gg.aFile[i];
    }
    i++;
  }
  return 0;
}

/*
** Dequote a fast-export filename.  Filenames are normally unquoted.  But
** if the contain some obscure special characters, quotes might be added.
*/
static void dequote_git_filename(char *zName){
  int n, i, j;
  if( zName==0 || zName[0]!='"' ) return;
  n = (int)strlen(zName);
  if( zName[n-1]!='"' ) return;
  for(i=0, j=1; j<n-1; j++){
    char c = zName[j];
    int x;
    if( c=='\\' ){
      if( j+3 <= n-1
       && zName[j+1]>='0' && zName[j+1]<='3'
       && zName[j+2]>='0' && zName[j+2]<='7'
       && zName[j+3]>='0' && zName[j+3]<='7'
       && (x = 64*(zName[j+1]-'0') + 8*(zName[j+2]-'0') + zName[j+3]-'0')!=0
      ){
        c = (unsigned char)x;
        j += 3;
      }else{
        c = zName[++j];
      }
    }
    zName[i++] = c;
  }
  zName[i] = 0;
}


static struct{
  const char *zMasterName;    /* Name of master branch */
  int authorFlag;             /* Use author as check-in committer */
  int nGitAttr;               /* Number of Git --attribute entries */
  struct {                    /* Git --attribute details */
    char *zUser;
    char *zEmail;
  } *gitUserInfo;
} ggit;

/*
** Read the git-fast-import format from pIn and insert the corresponding
** content into the database.
*/
static void git_fast_import(FILE *pIn){
  ImportFile *pFile, *pNew;
  int i, mx;
  char *z;
  char *zUuid;
  char *zName;
  char *zPerm;
  char *zFrom;
  char *zTo;
  char zLine[1000];

  gg.xFinish = finish_noop;
  while( fgets(zLine, sizeof(zLine), pIn) ){
    if( zLine[0]=='\n' || zLine[0]=='#' ) continue;
    if( strncmp(zLine, "blob", 4)==0 ){
      gg.xFinish();
      gg.xFinish = finish_blob;
    }else
    if( strncmp(zLine, "commit ", 7)==0 ){
      const char *zRefName;
      gg.xFinish();
      gg.xFinish = finish_commit;
      trim_newline(&zLine[7]);
      zRefName = &zLine[7];

      /* The argument to the "commit" line might match either of these
      ** patterns:
      **
      **   (A)  refs/heads/BRANCHNAME
      **   (B)  refs/tags/TAGNAME
      **
      ** If pattern A is used, then the branchname used is as shown.
      ** Except, the "master" branch which is the default branch name in
      ** Git is changed to "trunk" which is the default name in Fossil.
      ** If the pattern is B, then the new commit should be on the same
      ** branch as its parent.  And, we might need to add the TAGNAME
      ** tag to the new commit.  However, if there are multiple instances
      ** of pattern B with the same TAGNAME, then only put the tag on the
      ** last commit that holds that tag.
      **
      ** None of the above is explained in the git-fast-export
      ** documentation.  We had to figure it out via trial and error.
      */
      for(i=5; i<(int)strlen(zRefName) && zRefName[i]!='/'; i++){}
      gg.tagCommit = strncmp(&zRefName[5], "tags", 4)==0; /* pattern B */
      if( zRefName[i+1]!=0 ) zRefName += i+1;
      if( fossil_strcmp(zRefName, "master")==0 ) zRefName = ggit.zMasterName;
      gg.zBranch = fossil_strdup(zRefName);
      gg.fromLoaded = 0;
    }else
    if( strncmp(zLine, "tag ", 4)==0 ){
      gg.xFinish();
      gg.xFinish = finish_tag;
      trim_newline(&zLine[4]);
      gg.zTag = fossil_strdup(&zLine[4]);
    }else
    if( strncmp(zLine, "reset ", 6)==0 ){
      gg.xFinish();
    }else
    if( strncmp(zLine, "checkpoint", 10)==0 ){
      gg.xFinish();
    }else
    if( strncmp(zLine, "feature", 7)==0 ){
      gg.xFinish();
    }else
    if( strncmp(zLine, "option", 6)==0 ){
      gg.xFinish();
    }else
    if( strncmp(zLine, "progress ", 9)==0 ){
      gg.xFinish();
      trim_newline(&zLine[9]);
      fossil_print("%s\n", &zLine[9]);
      fflush(stdout);
    }else
    if( strncmp(zLine, "data ", 5)==0 ){
      fossil_free(gg.aData); gg.aData = 0;
      gg.nData = atoi(&zLine[5]);
      if( gg.nData ){
        int got;
        gg.aData = fossil_malloc( gg.nData+1 );
        got = fread(gg.aData, 1, gg.nData, pIn);
        if( got!=gg.nData ){
          fossil_fatal("short read: got %d of %d bytes", got, gg.nData);
        }
        gg.aData[got] = '\0';
        if( gg.zComment==0 &&
            (gg.xFinish==finish_commit || gg.xFinish==finish_tag) ){
          /* Strip trailing newline, it's appended to the comment. */
          if( gg.aData[got-1] == '\n' )
            gg.aData[got-1] = '\0';
          gg.zComment = gg.aData;
          gg.aData = 0;
          gg.nData = 0;
        }
      }
      if( gg.pInlineFile ){
        check_and_add_file(0, gg.pInlineFile);
        gg.pInlineFile = 0;
      }
    }else
    if( (!ggit.authorFlag && strncmp(zLine, "author ", 7)==0)
        || (ggit.authorFlag && strncmp(zLine, "committer ",10)==0
            && gg.zUser!=NULL) ){
      /* No-op */
    }else
    if( strncmp(zLine, "mark ", 5)==0 ){
      trim_newline(&zLine[5]);
      fossil_free(gg.zMark);
      gg.zMark = fossil_strdup(&zLine[5]);
    }else
    if( strncmp(zLine, "tagger ", 7)==0
        || (ggit.authorFlag && strncmp(zLine, "author ", 7)==0)
        || strncmp(zLine, "committer ",10)==0 ){
      sqlite3_int64 secSince1970;
      z = strchr(zLine, ' ');
      while( fossil_isspace(*z) ) z++;
      if( (zTo=strchr(z, '>'))==NULL ) goto malformed_line;
      *(++zTo) = '\0';
      /*
      ** If --attribute requested, lookup user in fx_ table by email address,
      ** otherwise lookup Git {author,committer} contact info in user table. If
      ** no matches, use email address as username for check-in attribution.
      */
      fossil_free(gg.zUser);
      gg.zUser = db_text(0, "SELECT login FROM user WHERE info=%Q", z);
      if( gg.zUser==NULL ){
        /* If there is no user with this contact info,
         * then use the email address as the username. */
        if ( (z=strchr(z, '<'))==NULL ) goto malformed_line;
        z++;
        *(zTo-1) = '\0';
        gg.zUser = fossil_strdup(z);
      }
      if (ggit.nGitAttr > 0 || db_table_exists("repository", "fx_git")) {
        gg.zUser = db_text(gg.zUser,
         "SELECT user FROM fx_git WHERE email=%Q", z);
      }
      secSince1970 = 0;
      for(zTo++; fossil_isdigit(*zTo); zTo++){
        secSince1970 = secSince1970*10 + *zTo - '0';
      }
      fossil_free(gg.zDate);
      gg.zDate = db_text(0, "SELECT datetime(%lld, 'unixepoch')",secSince1970);
      gg.zDate[10] = 'T';
    }else
    if( strncmp(zLine, "from ", 5)==0 ){
      trim_newline(&zLine[5]);
      fossil_free(gg.zFromMark);
      gg.zFromMark = fossil_strdup(&zLine[5]);
      fossil_free(gg.zFrom);
      gg.zFrom = resolve_committish(&zLine[5]);
    }else
    if( strncmp(zLine, "merge ", 6)==0 ){
      trim_newline(&zLine[6]);
      if( gg.nMerge>=gg.nMergeAlloc ){
        gg.nMergeAlloc = gg.nMergeAlloc*2 + 10;
        gg.azMerge = fossil_realloc(gg.azMerge, gg.nMergeAlloc*sizeof(char*));
      }
      gg.azMerge[gg.nMerge] = resolve_committish(&zLine[6]);
      if( gg.azMerge[gg.nMerge] ) gg.nMerge++;
    }else
    if( strncmp(zLine, "M ", 2)==0 ){
      import_prior_files();
      z = &zLine[2];
      zPerm = next_token(&z);
      zUuid = next_token(&z);
      zName = rest_of_line(&z);
      dequote_git_filename(zName);
      i = 0;
      pFile = import_find_file(zName, &i, gg.nFile);
      if( pFile==0 ){
        pFile = import_add_file();
        pFile->zName = fossil_strdup(zName);
      }
      pFile->isExe = (sqlite3_strglob("*755",zPerm)==0);
      pFile->isLink = (fossil_strcmp(zPerm, "120000")==0);
      fossil_free(pFile->zUuid);
      if( strcmp(zUuid,"inline")==0 ){
        pFile->zUuid = 0;
        gg.pInlineFile = pFile;
      }else{
        pFile->zUuid = resolve_committish(zUuid);
      }
      pFile->isFrom = 0;
    }else
    if( strncmp(zLine, "D ", 2)==0 ){
      import_prior_files();
      z = &zLine[2];
      zName = rest_of_line(&z);
      dequote_git_filename(zName);
      i = 0;
      while( (pFile = import_find_file(zName, &i, gg.nFile))!=0 ){
        if( pFile->isFrom==0 ) continue;
        fossil_free(pFile->zName);
        fossil_free(pFile->zPrior);
        fossil_free(pFile->zUuid);
        *pFile = gg.aFile[--gg.nFile];
        i--;
      }
    }else
    if( strncmp(zLine, "C ", 2)==0 ){
      int nFrom;
      import_prior_files();
      z = &zLine[2];
      zFrom = next_token(&z);
      zTo = rest_of_line(&z);
      i = 0;
      mx = gg.nFile;
      nFrom = strlen(zFrom);
      while( (pFile = import_find_file(zFrom, &i, mx))!=0 ){
        if( pFile->isFrom==0 ) continue;
        pNew = import_add_file();
        pFile = &gg.aFile[i-1];
        if( (int)strlen(pFile->zName)>nFrom ){
          pNew->zName = mprintf("%s%s", zTo, pFile->zName+nFrom);
        }else{
          pNew->zName = fossil_strdup(zTo);
        }
        pNew->isExe = pFile->isExe;
        pNew->isLink = pFile->isLink;
        pNew->zUuid = fossil_strdup(pFile->zUuid);
        pNew->isFrom = 0;
      }
    }else
    if( strncmp(zLine, "R ", 2)==0 ){
      int nFrom;
      import_prior_files();
      z = &zLine[2];
      zFrom = next_token(&z);
      zTo = rest_of_line(&z);
      i = 0;
      nFrom = strlen(zFrom);
      while( (pFile = import_find_file(zFrom, &i, gg.nFile))!=0 ){
        if( pFile->isFrom==0 ) continue;
        pNew = import_add_file();
        pFile = &gg.aFile[i-1];
        if( (int)strlen(pFile->zName)>nFrom ){
          pNew->zName = mprintf("%s%s", zTo, pFile->zName+nFrom);
        }else{
          pNew->zName = fossil_strdup(zTo);
        }
        pNew->zPrior = pFile->zName;
        pNew->isExe = pFile->isExe;
        pNew->isLink = pFile->isLink;
        pNew->zUuid = pFile->zUuid;
        pNew->isFrom = 0;
        gg.nFile--;
        *pFile = *pNew;
        memset(pNew, 0, sizeof(*pNew));
      }
    }else
    if( strncmp(zLine, "deleteall", 9)==0 ){
      gg.fromLoaded = 1;
    }else
    if( strncmp(zLine, "N ", 2)==0 ){
      /* No-op */
    }else
    if( strncmp(zLine, "property branch-nick ", 21)==0 ){
      /* Breezy uses this property to store the branch name.
      ** It has two values. Integer branch number, then the
      ** user-readable branch name. */
      z = &zLine[21];
      next_token(&z);
      fossil_free(gg.zBranch);
      gg.zBranch = fossil_strdup(next_token(&z));
    }else
    if( strncmp(zLine, "property rebase-of ", 19)==0 ){
      /* Breezy uses this property to record that a branch
      ** was rebased.  Silently ignore it. */
    }else
    {
      goto malformed_line;
    }
  }
  gg.xFinish();
  import_reset(1);
  return;

malformed_line:
  trim_newline(zLine);
  fossil_fatal("bad fast-import line: [%s]", zLine);
  return;
}

static struct{
  int rev;                    /* SVN revision number */
  char *zDate;                /* Date/time stamp */
  char *zUser;                /* User name */
  char *zComment;             /* Comment of a commit */
  const char *zTrunk;         /* Name of trunk folder in repo root */
  int lenTrunk;               /* String length of zTrunk */
  const char *zBranches;      /* Name of branches folder in repo root */
  int lenBranches;            /* String length of zBranches */
  const char *zTags;          /* Name of tags folder in repo root */
  int lenTags;                /* String length of zTags */
  Bag newBranches;            /* Branches that were created in this revision */
  int revFlag;                /* Add svn-rev-nn tags on every check-in */
  const char *zRevPre;        /* Prepended to revision tag names */
  const char *zRevSuf;        /* Appended to revision tag names */
  const char **azIgnTree;     /* NULL-terminated list of dirs to ignore */
} gsvn;
typedef struct {
  char *zKey;
  char *zVal;
} KeyVal;
typedef struct {
  KeyVal *aHeaders;
  int nHeaders;
  char *pRawProps;
  KeyVal *aProps;
  int nProps;
  Blob content;
  int contentFlag;
} SvnRecord;

#define svn_find_header(rec, zHeader) \
  svn_find_keyval((rec).aHeaders, (rec).nHeaders, (zHeader))
#define svn_find_prop(rec, zProp) \
  svn_find_keyval((rec).aProps, (rec).nProps, (zProp))
static char *svn_find_keyval(
  KeyVal *aKeyVal,
  int nKeyVal,
  const char *zKey
){
  int i;
  for(i=0; i<nKeyVal; i++){
    if( fossil_strcmp(aKeyVal[i].zKey, zKey)==0 ){
      return aKeyVal[i].zVal;
    }
  }
  return 0;
}

static void svn_free_rec(SvnRecord *rec){
  int i;
  for(i=0; i<rec->nHeaders; i++){
    fossil_free(rec->aHeaders[i].zKey);
  }
  fossil_free(rec->aHeaders);
  fossil_free(rec->aProps);
  fossil_free(rec->pRawProps);
  blob_reset(&rec->content);
}

static int svn_read_headers(FILE *pIn, SvnRecord *rec){
  char zLine[1000];

  rec->aHeaders = 0;
  rec->nHeaders = 0;
  while( fgets(zLine, sizeof(zLine), pIn) ){
    if( zLine[0]!='\n' ) break;
  }
  if( feof(pIn) ) return 0;
  do{
    char *sep;
    if( zLine[0]=='\n' ) break;
    rec->nHeaders += 1;
    rec->aHeaders = fossil_realloc(rec->aHeaders,
      sizeof(rec->aHeaders[0])*rec->nHeaders);
    rec->aHeaders[rec->nHeaders-1].zKey = mprintf("%s", zLine);
    sep = strchr(rec->aHeaders[rec->nHeaders-1].zKey, ':');
    if( !sep ){
      trim_newline(zLine);
      fossil_fatal("bad header line: [%s]", zLine);
    }
    *sep = 0;
    rec->aHeaders[rec->nHeaders-1].zVal = sep+1;
    sep = strchr(rec->aHeaders[rec->nHeaders-1].zVal, '\n');
    *sep = 0;
    while(rec->aHeaders[rec->nHeaders-1].zVal
       && fossil_isspace(*(rec->aHeaders[rec->nHeaders-1].zVal)) )
    {
      rec->aHeaders[rec->nHeaders-1].zVal++;
    }
  }while( fgets(zLine, sizeof(zLine), pIn) );
  if( zLine[0]!='\n' ){
      trim_newline(zLine);
      fossil_fatal("svn-dump data ended unexpectedly");
  }
  return 1;
}

static void svn_read_props(FILE *pIn, SvnRecord *rec){
  int nRawProps = 0;
  char *pRawProps;
  const char *zLen;

  rec->pRawProps = 0;
  rec->aProps = 0;
  rec->nProps = 0;
  zLen = svn_find_header(*rec, "Prop-content-length");
  if( zLen ){
    nRawProps = atoi(zLen);
  }
  if( nRawProps ){
    int got;
    char *zLine;
    rec->pRawProps = pRawProps = fossil_malloc( nRawProps );
    got = fread(rec->pRawProps, 1, nRawProps, pIn);
    if( got!=nRawProps ){
      fossil_fatal("short read: got %d of %d bytes", got, nRawProps);
    }
    if( memcmp(&pRawProps[got-10], "PROPS-END\n", 10)!=0 ){
      fossil_fatal("svn-dump data ended unexpectedly");
    }
    zLine = pRawProps;
    while( zLine<(pRawProps+nRawProps-10) ){
      char *eol;
      int propLen;
      if( zLine[0]=='D' ){
        propLen = atoi(&zLine[2]);
        eol = strchr(zLine, '\n');
        zLine = eol+1+propLen+1;
      }else{
        if( zLine[0]!='K' ){
          fossil_fatal("svn-dump data format broken");
        }
        propLen = atoi(&zLine[2]);
        eol = strchr(zLine, '\n');
        zLine = eol+1;
        eol = zLine+propLen;
        if( *eol!='\n' ){
          fossil_fatal("svn-dump data format broken");
        }
        *eol = 0;
        rec->nProps += 1;
        rec->aProps = fossil_realloc(rec->aProps,
          sizeof(rec->aProps[0])*rec->nProps);
        rec->aProps[rec->nProps-1].zKey = zLine;
        zLine = eol+1;
        if( zLine[0]!='V' ){
          fossil_fatal("svn-dump data format broken");
        }
        propLen = atoi(&zLine[2]);
        eol = strchr(zLine, '\n');
        zLine = eol+1;
        eol = zLine+propLen;
        if( *eol!='\n' ){
          fossil_fatal("svn-dump data format broken");
        }
        *eol = 0;
        rec->aProps[rec->nProps-1].zVal = zLine;
        zLine = eol+1;
      }
    }
  }
}

static int svn_read_rec(FILE *pIn, SvnRecord *rec){
  const char *zLen;
  int nLen = 0;
  if( svn_read_headers(pIn, rec)==0 ) return 0;
  svn_read_props(pIn, rec);
  blob_zero(&rec->content);
  zLen = svn_find_header(*rec, "Text-content-length");
  if( zLen ){
    rec->contentFlag = 1;
    nLen = atoi(zLen);
    blob_read_from_channel(&rec->content, pIn, nLen);
    if( (int)blob_size(&rec->content)!=nLen ){
      fossil_fatal("short read: got %d of %d bytes",
        blob_size(&rec->content), nLen
      );
    }
  }else{
    rec->contentFlag = 0;
  }
  return 1;
}

/*
** Returns the UUID for the RID, or NULL if not found.
** The returned string is allocated via db_text() and must be
** free()d by the caller.
*/
char *rid_to_uuid(int rid){
  return db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
}

#define SVN_UNKNOWN   0
#define SVN_TRUNK     1
#define SVN_BRANCH    2
#define SVN_TAG       3

#define MAX_INT_32    (0x7FFFFFFFL)

static void svn_finish_revision(){
  Blob manifest;
  static Stmt getChanges;
  static Stmt getFiles;
  static Stmt setRid;
  Blob mcksum;

  blob_zero(&manifest);
  db_static_prepare(&getChanges, "SELECT tid, tname, ttype, tparent"
                                 " FROM xrevisions, xbranches ON (tbranch=tid)"
                                 " WHERE trid ISNULL");
  db_static_prepare(&getFiles, "SELECT tpath, tuuid, tperm FROM xfiles"
                               " WHERE tbranch=:branch ORDER BY tpath");
  db_prepare(&setRid, "UPDATE xrevisions SET trid=:rid"
                             " WHERE trev=%d AND tbranch=:branch", gsvn.rev);
  while( db_step(&getChanges)==SQLITE_ROW ){
    int branchId = db_column_int(&getChanges, 0);
    const char *zBranch = db_column_text(&getChanges, 1);
    int branchType = db_column_int(&getChanges, 2);
    int parentRid = db_column_int(&getChanges, 3);
    int mergeRid = parentRid;
    Manifest *pParentManifest = 0;
    ManifestFile *pParentFile = 0;
    int sameAsParent = 1;
    int parentBranch = 0;
    if( !bag_find(&gsvn.newBranches, branchId) ){
      parentRid = db_int(0, "SELECT trid, max(trev) FROM xrevisions"
                            " WHERE trev<%d AND tbranch=%d",
                         gsvn.rev, branchId);
    }
    if( parentRid>0 ){
      pParentManifest = manifest_get(parentRid, CFTYPE_MANIFEST, 0);
      if( pParentManifest ){
        pParentFile = manifest_file_next(pParentManifest, 0);
        parentBranch = db_int(0, "SELECT tbranch FROM xrevisions WHERE trid=%d",
                              parentRid);
        if( parentBranch!=branchId && branchType!=SVN_TAG ){
          sameAsParent = 0;
        }
      }
    }
    if( mergeRid<MAX_INT_32 ){
      if( gsvn.zComment ){
        blob_appendf(&manifest, "C %F\n", gsvn.zComment);
      }else{
        blob_append(&manifest, "C (no\\scomment)\n", 16);
      }
      blob_appendf(&manifest, "D %s\n", gsvn.zDate);
      db_bind_int(&getFiles, ":branch", branchId);
      while( db_step(&getFiles)==SQLITE_ROW ){
        const char *zFile = db_column_text(&getFiles, 0);
        const char *zUuid = db_column_text(&getFiles, 1);
        const char *zPerm = db_column_text(&getFiles, 2);
        if( zPerm ){
          blob_appendf(&manifest, "F %F %s %s\n", zFile, zUuid, zPerm);
        }else{
          blob_appendf(&manifest, "F %F %s\n", zFile, zUuid);
        }
        if( sameAsParent ){
          if( !pParentFile
           || fossil_strcmp(pParentFile->zName,zFile)!=0
           || fossil_strcmp(pParentFile->zUuid,zUuid)!=0
           || fossil_strcmp(pParentFile->zPerm,zPerm)!=0
          ){
            sameAsParent = 0;
          }else{
            pParentFile = manifest_file_next(pParentManifest, 0);
          }
        }
      }
      if( pParentFile ){
        sameAsParent = 0;
      }
      db_reset(&getFiles);
      if( !sameAsParent ){
        if( parentRid>0 ){
          char *zParentUuid = rid_to_uuid(parentRid);
          if( parentRid==mergeRid || mergeRid==0){
            char *zParentBranch =
              db_text(0, "SELECT tname FROM xbranches WHERE tid=%d",
                      parentBranch
              );
            blob_appendf(&manifest, "P %s\n", zParentUuid);
            blob_appendf(&manifest, "T *branch * %F%F%F\n", gimport.zBranchPre,
                zBranch, gimport.zBranchSuf);
            blob_appendf(&manifest, "T *sym-%F%F%F *\n", gimport.zBranchPre,
                zBranch, gimport.zBranchSuf);
            if( gsvn.revFlag ){
              blob_appendf(&manifest, "T +sym-%Fr%d%F *\n", gimport.zTagPre,
                  gsvn.rev, gimport.zTagSuf);
            }
            blob_appendf(&manifest, "T -sym-%F%F%F *\n", gimport.zBranchPre,
                zParentBranch, gimport.zBranchSuf);
            fossil_free(zParentBranch);
          }else{
            char *zMergeUuid = rid_to_uuid(mergeRid);
            blob_appendf(&manifest, "P %s %s\n", zParentUuid, zMergeUuid);
            if( gsvn.revFlag ){
              blob_appendf(&manifest, "T +sym-%F%d%F *\n", gsvn.zRevPre,
                  gsvn.rev, gsvn.zRevSuf);
            }
            fossil_free(zMergeUuid);
          }
          fossil_free(zParentUuid);
        }else{
          blob_appendf(&manifest, "T *branch * %F%F%F\n",
              gimport.zBranchPre, zBranch, gimport.zBranchSuf);
          blob_appendf(&manifest, "T *sym-%F%F%F *\n", gimport.zBranchPre,
              zBranch, gimport.zBranchSuf);
          if( gsvn.revFlag ){
            blob_appendf(&manifest, "T +sym-%F%d%F *\n", gsvn.zRevPre, gsvn.rev,
                gsvn.zRevSuf);
          }
        }
      }else if( branchType==SVN_TAG ){
        char *zParentUuid = rid_to_uuid(parentRid);
        blob_reset(&manifest);
        blob_appendf(&manifest, "D %s\n", gsvn.zDate);
        blob_appendf(&manifest, "T +sym-%F%F%F %s\n", gimport.zTagPre, zBranch,
            gimport.zTagSuf, zParentUuid);
        fossil_free(zParentUuid);
      }
    }else{
      char *zParentUuid = rid_to_uuid(parentRid);
      blob_appendf(&manifest, "D %s\n", gsvn.zDate);
      if( branchType!=SVN_TAG ){
        blob_appendf(&manifest, "T +closed %s\n", zParentUuid);
      }else{
        blob_appendf(&manifest, "T -sym-%F%F%F %s\n", gimport.zBranchPre,
            zBranch, gimport.zBranchSuf, zParentUuid);
      }
      fossil_free(zParentUuid);
    }
    if( gsvn.zUser ){
      blob_appendf(&manifest, "U %F\n", gsvn.zUser);
    }else{
      const char *zUserOvrd = find_option("user-override",0,1);
      blob_appendf(&manifest, "U %F\n", zUserOvrd ? zUserOvrd : login_name());
    }
    md5sum_blob(&manifest, &mcksum);
    blob_appendf(&manifest, "Z %b\n", &mcksum);
    blob_reset(&mcksum);
    if( !sameAsParent ){
      int rid = content_put(&manifest);
      db_bind_int(&setRid, ":branch", branchId);
      db_bind_int(&setRid, ":rid", rid);
      db_step(&setRid);
      db_reset(&setRid);
    }else if( branchType==SVN_TAG ){
      content_put(&manifest);
      db_bind_int(&setRid, ":branch", branchId);
      db_bind_int(&setRid, ":rid", parentRid);
      db_step(&setRid);
      db_reset(&setRid);
    }else if( mergeRid==MAX_INT_32 ){
      content_put(&manifest);
      db_multi_exec("DELETE FROM xrevisions WHERE tbranch=%d AND trev=%d",
                    branchId, gsvn.rev);
    }else{
      db_multi_exec("DELETE FROM xrevisions WHERE tbranch=%d AND trev=%d",
                    branchId, gsvn.rev);
    }
    blob_reset(&manifest);
    manifest_destroy(pParentManifest);
  }
  db_reset(&getChanges);
  db_finalize(&setRid);
}

static u64 svn_get_varint(const char **pz){
  unsigned int v = 0;
  do{
    v = (v<<7) | ((*pz)[0]&0x7f);
  }while( (*pz)++[0]&0x80 );
  return v;
}

static void svn_apply_svndiff(Blob *pDiff, Blob *pSrc, Blob *pOut){
  const char *zDiff = blob_buffer(pDiff);
  char *zOut;
  if( blob_size(pDiff)<4 || memcmp(zDiff, "SVN", 4)!=0 ){
    fossil_fatal("Invalid svndiff0 format");
  }
  zDiff += 4;
  blob_zero(pOut);
  while( zDiff<(blob_buffer(pDiff)+blob_size(pDiff)) ){
    u64 lenOut, lenInst, lenData, lenOld;
    const char *zInst;
    const char *zData;

    u64 offSrc = svn_get_varint(&zDiff);
    /*lenSrc =*/ svn_get_varint(&zDiff);
    lenOut = svn_get_varint(&zDiff);
    lenInst = svn_get_varint(&zDiff);
    lenData = svn_get_varint(&zDiff);
    zInst = zDiff;
    zData = zInst+lenInst;
    lenOld = blob_size(pOut);
    blob_resize(pOut, lenOut+lenOld);
    zOut = blob_buffer(pOut)+lenOld;
    while( zDiff<zInst+lenInst ){
      u64 lenCpy = (*zDiff)&0x3f;
      const char *zCpy;
      switch( (*zDiff)&0xC0 ){
        case 0x00:
          if( 0==blob_size(pSrc) ){
            /* https://fossil-scm.org/forum/forumpost/15d4b242bda2a108 */
            fossil_fatal("Don't know how to handle NULL input. "
                         "Tip: do not use the --incremental flag "
                         "in the svn dump command.");
          }
          zCpy = blob_buffer(pSrc)+offSrc;
          break;
        case 0x40: zCpy = blob_buffer(pOut); break;
        case 0x80: zCpy = zData; break;
        default: fossil_fatal("Invalid svndiff0 instruction");
      }
      zDiff++;
      if( lenCpy==0 ){
        lenCpy = svn_get_varint(&zDiff);
      }
      if( zCpy!=zData ){
        zCpy += svn_get_varint(&zDiff);
      }else{
        zData += lenCpy;
      }
      while( lenCpy-- > 0 ){
        *zOut++ = *zCpy++;
      }
    }
    zDiff += lenData;
  }
}

/*
** Extract the branch or tag that the given path is on. Return the branch ID.
** Return 0 if not a branch, tag, or trunk, or if ignored by --ignore-tree.
*/
static int svn_parse_path(char *zPath, char **zFile, int *type){
  char *zBranch = 0;
  int branchId = 0;
  if( gsvn.azIgnTree ){
    const char **pzIgnTree;
    unsigned nPath = strlen(zPath);
    for( pzIgnTree = gsvn.azIgnTree; *pzIgnTree; ++pzIgnTree ){
      const char *zIgn = *pzIgnTree;
      unsigned nIgn = strlen(zIgn);
      if( strncmp(zPath, zIgn, nIgn) == 0
       && ( nPath == nIgn || (nPath > nIgn && zPath[nIgn] == '/')) ){
        return 0;
      }
    }
  }
  *type = SVN_UNKNOWN;
  *zFile = 0;
  if( gsvn.lenTrunk==0 ){
    zBranch = "trunk";
    *zFile = zPath;
    *type = SVN_TRUNK;
  }else
  if( strncmp(zPath, gsvn.zTrunk, gsvn.lenTrunk-1)==0 ){
    if( zPath[gsvn.lenTrunk-1]=='/' || zPath[gsvn.lenTrunk-1]==0 ){
      zBranch = "trunk";
      *zFile = zPath+gsvn.lenTrunk;
      *type = SVN_TRUNK;
    }else{
      zBranch = 0;
      *type = SVN_UNKNOWN;
    }
  }else{
    if( strncmp(zPath, gsvn.zBranches, gsvn.lenBranches)==0 ){
      *zFile = zBranch = zPath+gsvn.lenBranches;
      *type = SVN_BRANCH;
    }else
    if( strncmp(zPath, gsvn.zTags, gsvn.lenTags)==0 ){
      *zFile = zBranch = zPath+gsvn.lenTags;
      *type = SVN_TAG;
    }else{ /* Not a branch, tag or trunk */
      return 0;
    }
    while( **zFile && **zFile!='/' ){ (*zFile)++; }
    if( **zFile ){
      **zFile = '\0';
      (*zFile)++;
    }
  }
  if( *type!=SVN_UNKNOWN ){
    branchId = db_int(0,
                      "SELECT tid FROM xbranches WHERE tname=%Q AND ttype=%d",
                      zBranch, *type);
    if( branchId==0 ){
      db_multi_exec("INSERT INTO xbranches (tname, ttype) VALUES(%Q, %d)",
                    zBranch, *type);
      branchId = db_last_insert_rowid();
    }
  }
  return branchId;
}

/*
** Insert content of corresponding content blob into the database.
** If content is identified as a symbolic link, then trailing
** "link " characters are removed from content.
**
** content is considered to be a symlink if zPerm contains at least
** one "l" character.
*/
static int svn_handle_symlinks(const char *perms, Blob *content){
  Blob link_blob;
  if( perms && strstr(perms, "l")!=0 ){
    if( blob_size(content)>5 ){
      /* Skip trailing 'link ' characters */
      blob_seek(content, 5, BLOB_SEEK_SET);
      blob_tail(content, &link_blob);
      return content_put(&link_blob);
    }else{
      fossil_fatal("Too short symbolic link path");
    }
  }else{
    return content_put(content);
  }
}

/*
** Read the svn-dump format from pIn and insert the corresponding
** content into the database.
*/
static void svn_dump_import(FILE *pIn){
  SvnRecord rec;
  int ver;
  char *zTemp;
  const char *zUuid;
  Stmt addFile;
  Stmt delPath;
  Stmt addRev;
  Stmt cpyPath;
  Stmt cpyRoot;
  Stmt revSrc;

  /* version */
  if( svn_read_rec(pIn, &rec)
   && (zTemp = svn_find_header(rec, "SVN-fs-dump-format-version")) ){
    ver = atoi(zTemp);
    if( ver!=2 && ver!=3 ){
      fossil_fatal("Unknown svn-dump format version: %d", ver);
    }
  }else{
    fossil_fatal("Input is not an svn-dump!");
  }
  svn_free_rec(&rec);
  /* UUID */
  if( !svn_read_rec(pIn, &rec) || !(zUuid = svn_find_header(rec, "UUID")) ){
    /* Removed the following line since UUID is not actually used
     fossil_fatal("Missing UUID!"); */
  }
  svn_free_rec(&rec);

  /* content */
  db_prepare(&addFile,
    "INSERT INTO xfiles (tpath, tbranch, tuuid, tperm)"
    " VALUES(:path, :branch, (SELECT uuid FROM blob WHERE rid=:rid), :perm)"
  );
  db_prepare(&delPath,
    "DELETE FROM xfiles"
    " WHERE (tpath=:path OR (tpath>:path||'/' AND tpath<:path||'0'))"
    "   AND tbranch=:branch"
  );
  db_prepare(&addRev,
    "INSERT OR IGNORE INTO xrevisions (trev, tbranch) VALUES(:rev, :branch)"
  );
  db_prepare(&cpyPath,
    "INSERT INTO xfiles (tpath, tbranch, tuuid, tperm)"
    " SELECT :path||:sep||substr(filename,"
          "  length(:srcpath)+2), :branch, uuid, perm"
    " FROM xfoci"
    " WHERE checkinID=:rid"
    "   AND filename>:srcpath||'/'"
    "   AND filename<:srcpath||'0'"
  );
  db_prepare(&cpyRoot,
    "INSERT INTO xfiles (tpath, tbranch, tuuid, tperm)"
    " SELECT :path||:sep||filename, :branch, uuid, perm"
    " FROM xfoci"
    " WHERE checkinID=:rid"
  );
  db_prepare(&revSrc,
    "UPDATE xrevisions SET tparent=:parent"
    " WHERE trev=:rev AND tbranch=:branch AND tparent<:parent"
  );
  gsvn.rev = -1;
  bag_init(&gsvn.newBranches);
  while( svn_read_rec(pIn, &rec) ){
    if( (zTemp = svn_find_header(rec, "Revision-number")) ){ /* revision node */
      /* finish previous revision */
      char *zDate = NULL;
      if( gsvn.rev>=0 ){
        svn_finish_revision();
        fossil_free(gsvn.zUser);
        fossil_free(gsvn.zComment);
        fossil_free(gsvn.zDate);
        bag_clear(&gsvn.newBranches);
      }
      /* start new revision */
      gsvn.rev = atoi(zTemp);
      gsvn.zUser = mprintf("%s", svn_find_prop(rec, "svn:author"));
      gsvn.zComment = mprintf("%s", svn_find_prop(rec, "svn:log"));
      zDate = svn_find_prop(rec, "svn:date");
      if( zDate ){
        gsvn.zDate = date_in_standard_format(zDate);
      }else{
        gsvn.zDate = date_in_standard_format("now");
      }
      db_bind_int(&addRev, ":rev", gsvn.rev);
      fossil_print("\rImporting SVN revision: %d", gsvn.rev);
    }else
    if( (zTemp = svn_find_header(rec, "Node-path")) ){ /* file/dir node */
      char *zFile;
      int branchType;
      int branchId = svn_parse_path(zTemp, &zFile, &branchType);
      char *zAction = svn_find_header(rec, "Node-action");
      char *zKind = svn_find_header(rec, "Node-kind");
      char *zPerm = svn_find_prop(rec, "svn:executable") ? "x" : 0;
      int deltaFlag = 0;
      int srcRev = 0;

      if ( zPerm==0 ){
        zPerm = svn_find_prop(rec, "svn:special") ? "l" : 0;
      }
      if( branchId==0 ){
        svn_free_rec(&rec);
        continue;
      }
      if( (zTemp = svn_find_header(rec, "Text-delta")) ){
        deltaFlag = strncmp(zTemp, "true", 4)==0;
      }
      if( strncmp(zAction, "delete", 6)==0
       || strncmp(zAction, "replace", 7)==0 )
      {
        db_bind_int(&addRev, ":branch", branchId);
        db_step(&addRev);
        db_reset(&addRev);
        if( zFile[0]!=0 ){
          db_bind_text(&delPath, ":path", zFile);
          db_bind_int(&delPath, ":branch", branchId);
          db_step(&delPath);
          db_reset(&delPath);
        }else{
          db_multi_exec("DELETE FROM xfiles WHERE tbranch=%d", branchId);
          db_bind_int(&revSrc, ":parent", MAX_INT_32);
          db_bind_int(&revSrc, ":rev", gsvn.rev);
          db_bind_int(&revSrc, ":branch", branchId);
          db_step(&revSrc);
          db_reset(&revSrc);
        }
      } /* no 'else' here since 'replace' does both a 'delete' and an 'add' */
      if( strncmp(zAction, "add", 3)==0
       || strncmp(zAction, "replace", 7)==0 )
      {
        char *zSrcPath = svn_find_header(rec, "Node-copyfrom-path");
        char *zSrcFile;
        int srcRid = 0;
        if( zSrcPath ){
          int srcBranch;
          zTemp = svn_find_header(rec, "Node-copyfrom-rev");
          if( zTemp ){
            srcRev = atoi(zTemp);
          }else{
            fossil_fatal("Missing copyfrom-rev");
          }
          srcBranch = svn_parse_path(zSrcPath, &zSrcFile, &branchType);
          if( srcBranch==0 ){
            fossil_fatal("Copy from path outside the import paths");
          }
          srcRid = db_int(0, "SELECT trid, max(trev) FROM xrevisions"
                             " WHERE trev<=%d AND tbranch=%d",
                          srcRev, srcBranch);
          if( srcRid>0 && srcBranch!=branchId ){
            db_bind_int(&addRev, ":branch", branchId);
            db_step(&addRev);
            db_reset(&addRev);
            db_bind_int(&revSrc, ":parent", srcRid);
            db_bind_int(&revSrc, ":rev", gsvn.rev);
            db_bind_int(&revSrc, ":branch", branchId);
            db_step(&revSrc);
            db_reset(&revSrc);
          }
        }
        if( zKind==0 ){
          fossil_fatal("Missing Node-kind");
        }else if( strncmp(zKind, "dir", 3)==0 ){
          if( zSrcPath ){
            if( srcRid>0 ){
              if( zSrcFile[0]==0 ){
                db_bind_text(&cpyRoot, ":path", zFile);
                if( zFile[0]!=0 ){
                  db_bind_text(&cpyRoot, ":sep", "/");
                }else{
                  db_bind_text(&cpyRoot, ":sep", "");
                }
                db_bind_int(&cpyRoot, ":branch", branchId);
                db_bind_int(&cpyRoot, ":rid", srcRid);
                db_step(&cpyRoot);
                db_reset(&cpyRoot);
              }else{
                db_bind_text(&cpyPath, ":path", zFile);
                if( zFile[0]!=0 ){
                  db_bind_text(&cpyPath, ":sep", "/");
                }else{
                  db_bind_text(&cpyPath, ":sep", "");
                }
                db_bind_int(&cpyPath, ":branch", branchId);
                db_bind_text(&cpyPath, ":srcpath", zSrcFile);
                db_bind_int(&cpyPath, ":rid", srcRid);
                db_step(&cpyPath);
                db_reset(&cpyPath);
              }
            }
          }
          if( zFile[0]==0 ){
            bag_insert(&gsvn.newBranches, branchId);
          }
        }else{
          int rid = 0;
          if( zSrcPath ){
            rid = db_int(0, "SELECT rid FROM blob WHERE uuid=("
                            " SELECT uuid FROM xfoci"
                            "  WHERE checkinID=%d AND filename=%Q"
                            ")",
                         srcRid, zSrcFile);
          }
          if( deltaFlag ){
            Blob deltaSrc;
            Blob target;
            if( rid!=0 ){
              content_get(rid, &deltaSrc);
            }else{
              blob_zero(&deltaSrc);
            }
            svn_apply_svndiff(&rec.content, &deltaSrc, &target);
            rid = svn_handle_symlinks(zPerm, &target);
            blob_reset(&deltaSrc);
            blob_reset(&target);
          }else if( rec.contentFlag ){
            rid = svn_handle_symlinks(zPerm, &rec.content);
          }else if( zSrcPath ){
            if ( zPerm==0 ){
              zPerm = db_text(0, "SELECT tperm FROM xfiles"
                                 " WHERE tpath=%Q AND tbranch=%d"
                                 "", zSrcPath, branchId);
            }
          }
          db_bind_text(&addFile, ":path", zFile);
          db_bind_int(&addFile, ":branch", branchId);
          db_bind_int(&addFile, ":rid", rid);
          db_bind_text(&addFile, ":perm", zPerm);
          db_step(&addFile);
          db_reset(&addFile);
          db_bind_int(&addRev, ":branch", branchId);
          db_step(&addRev);
          db_reset(&addRev);
        }
      }else
      if( strncmp(zAction, "change", 6)==0 ){
        int rid = 0;
        if( zKind==0 ){
          fossil_fatal("Missing Node-kind");
        }
        if( rec.contentFlag && strncmp(zKind, "dir", 3)!=0 ){
          if ( zPerm==0 ){
            zPerm = db_text(0, "SELECT tperm FROM xfiles"
                               " WHERE tpath=%Q AND tbranch=%d"
                               "", zFile, branchId);
          }

          if( deltaFlag ){
            Blob deltaSrc;
            Blob target;
            rid = db_int(0, "SELECT rid FROM blob WHERE uuid=("
                            " SELECT tuuid FROM xfiles"
                            "  WHERE tpath=%Q AND tbranch=%d"
                            ")", zFile, branchId);
            content_get(rid, &deltaSrc);
            svn_apply_svndiff(&rec.content, &deltaSrc, &target);
            rid = svn_handle_symlinks(zPerm, &target);
            blob_reset(&deltaSrc);
            blob_reset(&target);
          }else{
            rid = svn_handle_symlinks(zPerm, &rec.content);
          }
          db_bind_text(&addFile, ":path", zFile);
          db_bind_int(&addFile, ":branch", branchId);
          db_bind_int(&addFile, ":rid", rid);
          db_bind_text(&addFile, ":perm", zPerm);
          db_step(&addFile);
          db_reset(&addFile);
          db_bind_int(&addRev, ":branch", branchId);
          db_step(&addRev);
          db_reset(&addRev);
        }
      }else
      if( strncmp(zAction, "delete", 6)!=0 ){ /* already did this one above */
        fossil_fatal("Unknown Node-action");
      }
    }else{
      fossil_fatal("Unknown record type");
    }
    svn_free_rec(&rec);
  }
  svn_finish_revision();
  fossil_free(gsvn.zUser);
  fossil_free(gsvn.zComment);
  fossil_free(gsvn.zDate);
  db_finalize(&addFile);
  db_finalize(&delPath);
  db_finalize(&addRev);
  db_finalize(&cpyPath);
  db_finalize(&cpyRoot);
  db_finalize(&revSrc);
  fossil_print(" Done!\n");
}

/*
** COMMAND: import*
**
** Usage: %fossil import ?--git? ?OPTIONS? NEW-REPOSITORY ?INPUT-FILE?
**    or: %fossil import --svn ?OPTIONS? NEW-REPOSITORY ?INPUT-FILE?
**
** Read interchange format generated by another VCS and use it to
** construct a new Fossil repository named by the NEW-REPOSITORY
** argument.  If no input file is supplied the interchange format
** data is read from standard input.
**
** The following formats are currently understood by this command
**
**   --git        Import from the git-fast-export file format (default)
**                Options:
**                  --import-marks  FILE Restore marks table from FILE
**                  --export-marks  FILE Save marks table to FILE
**                  --rename-master NAME Renames the master branch to NAME
**                  --use-author    Uses author as the committer
**                  --attribute     "EMAIL USER" Attribute commits to USER
**                                  instead of Git committer EMAIL address
**
**   --svn        Import from the svnadmin-dump file format.  The default
**                behaviour (unless overridden by --flat) is to treat 3
**                folders in the SVN root as special, following the
**                common layout of SVN repositories.  These are (by
**                default) trunk/, branches/ and tags/.  The SVN --deltas
**                format is supported but not required.
**                Options:
**                  --trunk FOLDER     Name of trunk folder
**                  --branches FOLDER  Name of branches folder
**                  --tags FOLDER      Name of tags folder
**                  --base PATH        Path to project root in repository
**                  --flat             The whole dump is a single branch
**                  --rev-tags         Tag each revision, implied by -i
**                  --no-rev-tags      Disables tagging effect of -i
**                  --rename-rev PAT   Rev tag names, default "svn-rev-%"
**                  --ignore-tree DIR  Ignores subtree rooted at DIR
**
** Common Options:
**   -i|--incremental     Allow importing into an existing repository
**   -f|--force           Overwrite repository if already exists
**   -q|--quiet           Omit progress output
**   --no-rebuild         Skip the "rebuilding metadata" step
**   --no-vacuum          Skip the final VACUUM of the database file
**   --rename-trunk NAME  Use NAME as name of imported trunk branch
**   --rename-branch PAT  Rename all branch names using PAT pattern
**   --rename-tag PAT     Rename all tag names using PAT pattern
**   -A|--admin-user NAME Use NAME for the admin user
**
** The --incremental option allows an existing repository to be extended
** with new content.  The --rename-* options may be useful to avoid name
** conflicts when using the --incremental option. The --admin-user
** option is ignored if --incremental is specified.
**
** The argument to --rename-* contains one "%" character to be replaced
** with the original name.  For example, "--rename-tag svn-%-tag" renames
** the tag called "release" to "svn-release-tag".
**
** --ignore-tree is useful for importing Subversion repositories which
** move branches to subdirectories of "branches/deleted" instead of
** deleting them.  It can be supplied multiple times if necessary.
**
** The --attribute option takes a quoted string argument comprised of a
** Git committer email and the username to be attributed to corresponding
** check-ins in the Fossil repository. This option can be repeated. For
** example, --attribute "drh@sqlite.org drh" --attribute "xyz@abc.net X".
** Attributions are persisted to the repository so that subsequent
** 'fossil git export' operations attribute Fossil commits to corresponding
** 'Git Committer <git@committer.com>' users, and incremental imports with
** 'fossil import --git --incremental' use previous --attribute records.
**
** See also: export
*/
void import_cmd(void){
  char *zPassword;
  FILE *pIn;
  Stmt q;
  int forceFlag = find_option("force", "f", 0)!=0;
  int svnFlag = find_option("svn", 0, 0)!=0;
  int gitFlag = find_option("git", 0, 0)!=0;
  int omitRebuild = find_option("no-rebuild",0,0)!=0;
  int omitVacuum = find_option("no-vacuum",0,0)!=0;
  const char *zDefaultUser = find_option("admin-user","A",1);

  /* Options common to all input formats */
  int incrFlag = find_option("incremental", "i", 0)!=0;

  /* Options for --svn only */
  const char *zBase = "";
  int flatFlag = 0;

  /* Options for --git only */
  const char *markfile_in = 0;
  const char *markfile_out = 0;

  /* Interpret --rename-* options.  Use a table to avoid code duplication. */
  const struct {
    const char *zOpt, **varPre, *zDefaultPre, **varSuf, *zDefaultSuf;
    int format; /* 1=git, 2=svn, 3=any */
  } renOpts[] = {
    {"rename-branch", &gimport.zBranchPre,   "", &gimport.zBranchSuf, "", 3},
    {"rename-tag"   , &gimport.zTagPre   ,   "", &gimport.zTagSuf   , "", 3},
    {"rename-rev"   , &gsvn.zRevPre, "svn-rev-", &gsvn.zRevSuf      , "", 2},
  }, *renOpt = renOpts;
  int i;
  for( i = 0; i < count(renOpts); ++i, ++renOpt ){
    if( 1 << svnFlag & renOpt->format ){
      const char *zArgument = find_option(renOpt->zOpt, 0, 1);
      if( zArgument ){
         const char *sep = strchr(zArgument, '%');
         if( !sep ){
           fossil_fatal("missing '%%' in argument to --%s", renOpt->zOpt);
         }else if( strchr(sep + 1, '%') ){
           fossil_fatal("multiple '%%' in argument to --%s", renOpt->zOpt);
         }
         *renOpt->varPre = fossil_malloc(sep - zArgument + 1);
         memcpy((char *)*renOpt->varPre, zArgument, sep - zArgument);
         ((char *)*renOpt->varPre)[sep - zArgument] = 0;
         *renOpt->varSuf = sep + 1;
       }else{
         *renOpt->varPre = renOpt->zDefaultPre;
         *renOpt->varSuf = renOpt->zDefaultSuf;
       }
    }
  }
  if( !(gimport.zTrunkName = find_option("rename-trunk", 0, 1)) ){
    gimport.zTrunkName = "trunk";
  }

  if( svnFlag ){
    /* Get --svn related options here, so verify_all_options() fails when
     * svn-only options are specified with --git
     */
    const char *zIgnTree;
    unsigned nIgnTree = 0;
    while( (zIgnTree = find_option("ignore-tree", 0, 1)) ){
      if ( *zIgnTree ){
        gsvn.azIgnTree = fossil_realloc((void *)gsvn.azIgnTree,
            sizeof(*gsvn.azIgnTree) * (nIgnTree + 2));
        gsvn.azIgnTree[nIgnTree++] = zIgnTree;
        gsvn.azIgnTree[nIgnTree] = 0;
      }
    }
    zBase = find_option("base", 0, 1);
    flatFlag = find_option("flat", 0, 0)!=0;
    gsvn.zTrunk = find_option("trunk", 0, 1);
    gsvn.zBranches = find_option("branches", 0, 1);
    gsvn.zTags = find_option("tags", 0, 1);
    gsvn.revFlag = find_option("rev-tags", 0, 0)
                || (incrFlag && !find_option("no-rev-tags", 0, 0));
  }else if( gitFlag ){
    const char *zGitUser;
    markfile_in = find_option("import-marks", 0, 1);
    markfile_out = find_option("export-marks", 0, 1);
    if( !(ggit.zMasterName = find_option("rename-master", 0, 1)) ){
      ggit.zMasterName = "master";
    }
    ggit.authorFlag = find_option("use-author", 0, 0)!=0;
    /*
    ** Extract --attribute 'emailaddr username' args that will populate
    ** new 'fx_' table to later match username for check-in attribution.
    */
    zGitUser = find_option("attribute", 0, 1);
    while( zGitUser != 0 ){
      char *currGitUser;
      ggit.gitUserInfo = fossil_realloc(ggit.gitUserInfo, ++ggit.nGitAttr
       * sizeof(ggit.gitUserInfo[0]));
      currGitUser = fossil_strdup(zGitUser);
      ggit.gitUserInfo[ggit.nGitAttr-1].zEmail = next_token(&currGitUser);
      ggit.gitUserInfo[ggit.nGitAttr-1].zUser = rest_of_line(&currGitUser);
      zGitUser = find_option("attribute", 0, 1);
    }
  }
  verify_all_options();

  if( g.argc!=3 && g.argc!=4 ){
    usage("--git|--svn ?OPTIONS? NEW-REPOSITORY ?INPUT-FILE?");
  }
  if( g.argc==4 ){
    pIn = fossil_fopen(g.argv[3], "rb");
    if( pIn==0 ) fossil_fatal("cannot open input file \"%s\"", g.argv[3]);
  }else{
    pIn = stdin;
    fossil_binary_mode(pIn);
  }
  if( !incrFlag ){
    if( forceFlag ) file_delete(g.argv[2]);
    db_create_repository(g.argv[2]);
  }
  db_open_repository(g.argv[2]);
  db_open_config(0, 0);
  db_unprotect(PROTECT_ALL);

  db_begin_transaction();
  if( !incrFlag ){
    db_initial_setup(0, 0, zDefaultUser);
    db_set("main-branch", gimport.zTrunkName, 0);
  }
  content_rcvid_init(svnFlag ? "svn-import" : "git-import");

  if( svnFlag ){
    db_multi_exec(
       "CREATE TEMP TABLE xrevisions("
       " trev INTEGER, tbranch INT, trid INT, tparent INT DEFAULT 0,"
       " UNIQUE(tbranch, trev)"
       ");"
       "CREATE INDEX temp.i_xrevisions ON xrevisions(trid);"
       "CREATE TEMP TABLE xfiles("
       " tpath TEXT, tbranch INT, tuuid TEXT, tperm TEXT,"
       " UNIQUE (tbranch, tpath) ON CONFLICT REPLACE"
       ");"
       "CREATE TEMP TABLE xbranches("
       " tid INTEGER PRIMARY KEY, tname TEXT, ttype INT,"
       " UNIQUE(tname, ttype)"
       ");"
       "CREATE VIRTUAL TABLE temp.xfoci USING files_of_checkin;"
    );
    if( zBase==0 ){ zBase = ""; }
    if( strlen(zBase)>0 ){
      if( zBase[strlen(zBase)-1]!='/' ){
        zBase = mprintf("%s/", zBase);
      }
    }
    if( flatFlag ){
      gsvn.zTrunk = zBase;
      gsvn.zBranches = 0;
      gsvn.zTags = 0;
      gsvn.lenTrunk = strlen(zBase);
      gsvn.lenBranches = 0;
      gsvn.lenTags = 0;
    }else{
      if( gsvn.zTrunk==0 ){ gsvn.zTrunk = "trunk/"; }
      if( gsvn.zBranches==0 ){ gsvn.zBranches = "branches/"; }
      if( gsvn.zTags==0 ){ gsvn.zTags = "tags/"; }
      gsvn.zTrunk = mprintf("%s%s", zBase, gsvn.zTrunk);
      gsvn.zBranches = mprintf("%s%s", zBase, gsvn.zBranches);
      gsvn.zTags = mprintf("%s%s", zBase, gsvn.zTags);
      gsvn.lenTrunk = strlen(gsvn.zTrunk);
      gsvn.lenBranches = strlen(gsvn.zBranches);
      gsvn.lenTags = strlen(gsvn.zTags);
      if( gsvn.zTrunk[gsvn.lenTrunk-1]!='/' ){
        gsvn.zTrunk = mprintf("%s/", gsvn.zTrunk);
        gsvn.lenTrunk++;
      }
      if( gsvn.zBranches[gsvn.lenBranches-1]!='/' ){
        gsvn.zBranches = mprintf("%s/", gsvn.zBranches);
        gsvn.lenBranches++;
      }
      if( gsvn.zTags[gsvn.lenTags-1]!='/' ){
        gsvn.zTags = mprintf("%s/", gsvn.zTags);
        gsvn.lenTags++;
      }
    }
    svn_dump_import(pIn);
  }else{
    Bag blobs, vers;
    bag_init(&blobs);
    bag_init(&vers);
    /* The following temp-tables are used to hold information needed for
    ** the import.
    **
    ** The XMARK table provides a mapping from fast-import "marks" and symbols
    ** into artifact hashes.
    **
    ** Given any valid fast-import symbol, the corresponding fossil rid and
    ** hash can found by searching against the xmark.tname field.
    **
    ** The XBRANCH table maps commit marks and symbols into the branch those
    ** commits belong to.  If xbranch.tname is a fast-import symbol for a
    ** check-in then xbranch.brnm is the branch that check-in is part of.
    **
    ** The XTAG table records information about tags that need to be applied
    ** to various branches after the import finishes.  The xtag.tcontent field
    ** contains the text of an artifact that will add a tag to a check-in.
    ** The git-fast-export file format might specify the same tag multiple
    ** times but only the last tag should be used.  And we do not know which
    ** occurrence of the tag is the last until the import finishes.
    */
    db_multi_exec(
       "CREATE TEMP TABLE xmark(tname TEXT UNIQUE, trid INT, tuuid TEXT);"
       "CREATE INDEX temp.i_xmark ON xmark(trid);"
       "CREATE TEMP TABLE xbranch(tname TEXT UNIQUE, brnm TEXT);"
       "CREATE TEMP TABLE xtag(tname TEXT UNIQUE, tcontent TEXT);"
    );

    if( markfile_in ){
      FILE *f = fossil_fopen(markfile_in, "r");
      if( !f ){
        fossil_fatal("cannot open %s for reading", markfile_in);
      }
      if( import_marks(f, &blobs, NULL, NULL)<0 ){
        fossil_fatal("error importing marks from file: %s", markfile_in);
      }
      fclose(f);
    }

    manifest_crosslink_begin();
    /*
    ** The following 'fx_' table is used to hold information needed for
    ** importing and exporting to attribute Fossil check-ins or Git commits
    ** to either a desired username or full contact information string.
    */
    if(ggit.nGitAttr > 0) {
      int idx;
      db_unprotect(PROTECT_ALL);
      if( !db_table_exists("repository", "fx_git") ){
        db_multi_exec(
          "CREATE TABLE fx_git(user TEXT, email TEXT UNIQUE);"
        );
      }
      for(idx = 0; idx < ggit.nGitAttr; ++idx ){
        db_multi_exec(
            "INSERT OR IGNORE INTO fx_git(user, email) VALUES(%Q, %Q)",
            ggit.gitUserInfo[idx].zUser, ggit.gitUserInfo[idx].zEmail
        );
      }
      db_protect_pop();
    }
    git_fast_import(pIn);
    db_prepare(&q, "SELECT tcontent FROM xtag");
    while( db_step(&q)==SQLITE_ROW ){
      Blob record;
      db_ephemeral_blob(&q, 0, &record);
      fast_insert_content(&record, 0, 0, 0, 1);
      import_reset(0);
    }
    db_finalize(&q);
    if( markfile_out ){
      int rid;
      Stmt q_marks;
      FILE *f;
      db_prepare(&q_marks, "SELECT DISTINCT trid FROM xmark");
      while( db_step(&q_marks)==SQLITE_ROW ){
        rid = db_column_int(&q_marks, 0);
        if( db_int(0, "SELECT count(objid) FROM event"
                      " WHERE objid=%d AND type='ci'", rid)==0 ){
          /* Blob marks exported by git aren't saved between runs, so they need
          ** to be left free for git to re-use in the future.
          */
        }else{
          bag_insert(&vers, rid);
        }
      }
      db_finalize(&q_marks);
      f = fossil_fopen(markfile_out, "w");
      if( !f ){
        fossil_fatal("cannot open %s for writing", markfile_out);
      }
      export_marks(f, &blobs, &vers);
      fclose(f);
      bag_clear(&blobs);
      bag_clear(&vers);
    }
    manifest_crosslink_end(MC_NONE);
  }

  verify_cancel();
  db_end_transaction(0);
  fossil_print("                               \r");
  if( omitRebuild ){
    omitVacuum = 1;
  }else{
    db_begin_transaction();
    fossil_print("Rebuilding repository meta-data...\n");
    rebuild_db(1, !incrFlag);
    verify_cancel();
    db_end_transaction(0);
  }
  if( !omitVacuum ){
    fossil_print("Vacuuming..."); fflush(stdout);
    db_multi_exec("VACUUM");
  }
  fossil_print(" ok\n");
  if( !incrFlag ){
    fossil_print("project-id: %s\n", db_get("project-code", 0));
    fossil_print("server-id:  %s\n", db_get("server-code", 0));
    zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
    fossil_print("admin-user: %s (password is \"%s\")\n", g.zLogin, zPassword);
    hash_user_password(g.zLogin);
  }
}
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** the current tree, or a particular artifact or check-in.
*/
#include "config.h"
#include "info.h"
#include <assert.h>

/*
** Return a string (in memory obtained from malloc) holding a 
** comma-separated list of tags that apply to check-in with 
** Return a string (in memory obtained from malloc) holding a
** comma-separated list of tags that apply to check-in with
** record-id rid.  If the "propagatingOnly" flag is true, then only
** show branch tags (tags that propagate to children).
**
** Return NULL if there are no such tags.
*/
char *info_tags_of_checkin(int rid, int propagatingOnly){
  char *zTags;
  zTags = db_text(0, "SELECT group_concat(substr(tagname, 5), ', ')"
                     "  FROM tagxref, tag"
                     " WHERE tagxref.rid=%d AND tagxref.tagtype>%d"
                     "   AND tag.tagid=tagxref.tagid"
                     "   AND tag.tagname GLOB 'sym-*'",
                     rid, propagatingOnly!=0);
  return zTags;
}


/*
** Print common information about a particular record.
**
**     *  The UUID
**     *  The artifact hash
**     *  The record ID
**     *  mtime and ctime
**     *  who signed it
**
*/
void show_common_info(int rid, const char *zUuidName, int showComment){
void show_common_info(
  int rid,                   /* The rid for the check-in to display info for */
  const char *zRecDesc,      /* Brief record description; e.g. "check-out:" */
  int showComment,           /* True to show the check-in comment */
  int showFamily             /* True to show parents and children */
){
  Stmt q;
  char *zComment = 0;
  char *zTags;
  char *zDate;
  char *zUuid;
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( zUuid ){
    zDate = db_text(0, 
    zDate = db_text(0,
      "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
      rid
    );
         /* 01234567890123 */
    printf("%-13s %s %s\n", zUuidName, zUuid, zDate ? zDate : "");
    fossil_print("%-13s %.40s %s\n", zRecDesc, zUuid, zDate ? zDate : "");
    free(zUuid);
    free(zDate);
    if( showComment ){
      zComment = db_text(0,
        "SELECT coalesce(ecomment,comment) || "
        "       ' (user: ' || coalesce(euser,user,'?') || ')' "
        "  FROM event WHERE objid=%d",
        rid
      );
  }
  db_prepare(&q, "SELECT uuid, pid FROM plink JOIN blob ON pid=rid "
                 " WHERE cid=%d", rid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    zDate = db_text("", 
      "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
      db_column_int(&q, 1)
    );
    printf("parent:       %s %s\n", zUuid, zDate);
    free(zDate);
  }
  db_finalize(&q);
  db_prepare(&q, "SELECT uuid, cid FROM plink JOIN blob ON cid=rid "
                 " WHERE pid=%d", rid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    zDate = db_text("", 
      "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
      db_column_int(&q, 1)
    );
    printf("child:        %s %s\n", zUuid, zDate);
    free(zDate);
  }
  db_finalize(&q);
    }
    free(zUuid);
  }
  if( showFamily ){
    db_prepare(&q, "SELECT uuid, pid, isprim FROM plink JOIN blob ON pid=rid "
                   " WHERE cid=%d"
                   " ORDER BY isprim DESC, mtime DESC /*sort*/", rid);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zUuid = db_column_text(&q, 0);
      const char *zType = db_column_int(&q, 2) ? "parent:" : "merged-from:";
      zDate = db_text("",
        "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
        db_column_int(&q, 1)
      );
      fossil_print("%-13s %.40s %s\n", zType, zUuid, zDate);
      free(zDate);
    }
    db_finalize(&q);
    db_prepare(&q, "SELECT uuid, cid, isprim FROM plink JOIN blob ON cid=rid "
                   " WHERE pid=%d"
                   " ORDER BY isprim DESC, mtime DESC /*sort*/", rid);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zUuid = db_column_text(&q, 0);
      const char *zType = db_column_int(&q, 2) ? "child:" : "merged-into:";
      zDate = db_text("",
        "SELECT datetime(mtime) || ' UTC' FROM event WHERE objid=%d",
        db_column_int(&q, 1)
      );
      fossil_print("%-13s %.40s %s\n", zType, zUuid, zDate);
      free(zDate);
    }
    db_finalize(&q);
  }
  zTags = info_tags_of_checkin(rid, 0);
  if( zTags && zTags[0] ){
    printf("tags:         %s\n", zTags);
    fossil_print("tags:         %s\n", zTags);
  }
  free(zTags);
  if( zComment ){
    printf("comment:\n%s\n", zComment);
    fossil_print("comment:      ");
    comment_print(zComment, 0, 14, -1, get_comment_format());
    free(zComment);
  }
}

/*
** Print information about the URLs used to access a repository and
** checkouts in a repository.
*/
static void extraRepoInfo(void){
  Stmt s;
  db_prepare(&s, "SELECT substr(name,7), date(mtime,'unixepoch')"
                 "  FROM config"
                 " WHERE name GLOB 'ckout:*' ORDER BY mtime DESC");
  while( db_step(&s)==SQLITE_ROW ){
    const char *zName;
    const char *zCkout = db_column_text(&s, 0);
    if( !vfile_top_of_checkout(zCkout) ) continue;
    if( g.localOpen ){
      if( fossil_strcmp(zCkout, g.zLocalRoot)==0 ) continue;
      zName = "alt-root:";
    }else{
      zName = "check-out:";

    }
    fossil_print("%-11s   %-54s %s\n", zName, zCkout,
                 db_column_text(&s, 1));
  }
  db_finalize(&s);
  db_prepare(&s, "SELECT substr(name,9), date(mtime,'unixepoch')"
                 "  FROM config"
                 " WHERE name GLOB 'baseurl:*' ORDER BY mtime DESC");
  while( db_step(&s)==SQLITE_ROW ){
    fossil_print("access-url:   %-54s %s\n", db_column_text(&s, 0),
                 db_column_text(&s, 1));
  }
  db_finalize(&s);
}

/*
** Show the parent project, if any
*/
static void showParentProject(void){
  const char *zParentCode;
  zParentCode = db_get("parent-project-code",0);
  if( zParentCode ){
    fossil_print("derived-from: %s %s\n", zParentCode,
                 db_get("parent-project-name",""));
  }
}

/*
** COMMAND: info
**
** Usage: %fossil info ?ARTIFACT-ID|FILENAME?
** Usage: %fossil info ?VERSION | REPOSITORY_FILENAME? ?OPTIONS?
**
** With no arguments, provide information about the current tree.
** If an argument is specified, provide information about the object
** in the respository of the current tree that the argument refers
** in the repository of the current tree that the argument refers
** to.  Or if the argument is the name of a repository, show
** information about that repository.
**
** If the argument is a repository name, then the --verbose option shows
** all known check-out locations for that repository and all URLs used
** to access the repository.  The --verbose is (currently) a no-op if
** the argument is the name of an object within the repository.
**
** Use the "finfo" command to get information about a specific
** file in a check-out.
**
** Options:
**    -R|--repository REPO       Extract info from repository REPO
**    -v|--verbose               Show extra information about repositories
**
** See also: [[annotate]], [[artifact]], [[finfo]], [[timeline]]
*/
void info_cmd(void){
  i64 fsize;
  int verboseFlag = find_option("verbose","v",0)!=0;
  if( g.argc!=2 && g.argc!=3 ){
  if( !verboseFlag ){
    usage("?FILENAME|ARTIFACT-ID?");
    verboseFlag = find_option("detail","l",0)!=0; /* deprecated */
  }

  if( g.argc==3
   && file_isfile(g.argv[2], ExtFILE)
  if( g.argc==3 && (fsize = file_size(g.argv[2]))>0 && (fsize&0x1ff)==0 ){
    db_open_config(0);
   && (fsize = file_size(g.argv[2], ExtFILE))>0
   && (fsize&0x1ff)==0
  ){
    db_open_config(0, 0);
    db_record_repository_filename(g.argv[2]);
    db_open_repository(g.argv[2]);
    db_record_repository_filename(g.argv[2]);
    printf("project-name: %s\n", db_get("project-name", "<unnamed>"));
    printf("project-code: %s\n", db_get("project-code", "<none>"));
    fossil_print("project-name: %s\n", db_get("project-name", "<unnamed>"));
    fossil_print("project-code: %s\n", db_get("project-code", "<none>"));
    printf("server-code:  %s\n", db_get("server-code", "<none>"));
    showParentProject();
    extraRepoInfo();
    return;
  }
  db_find_and_open_repository(OPEN_OK_NOT_FOUND,0);
  db_must_be_within_tree();
  verify_all_options();
  if( g.argc==2 ){
    int vid;
         /* 012345678901234 */
    db_record_repository_filename(0);
    printf("project-name: %s\n", db_get("project-name", "<unnamed>"));
    if( g.repositoryOpen ){
      db_record_repository_filename(0);
      fossil_print("project-name: %s\n", db_get("project-name", "<unnamed>"));
    printf("repository:   %s\n", db_lget("repository", ""));
    printf("local-root:   %s\n", g.zLocalRoot);
#ifdef __MINGW32__
    if( g.zHome ){
      printf("user-home:    %s\n", g.zHome);
    }
#endif
    printf("project-code: %s\n", db_get("project-code", ""));
    printf("server-code:  %s\n", db_get("server-code", ""));
    vid = db_lget_int("checkout", 0);
    if( vid==0 ){
      printf("checkout:     nil\n");
    }else{
      db_open_config(0,1);
    }
    if( g.localOpen ){
      fossil_print("repository:   %s\n", db_repository_filename());
      fossil_print("local-root:   %s\n", g.zLocalRoot);
    }
    if( verboseFlag && g.repositoryOpen ){
      extraRepoInfo();
    }
    if( g.zConfigDbName ){
      fossil_print("config-db:    %s\n", g.zConfigDbName);
    }
    if( g.repositoryOpen ){
      fossil_print("project-code: %s\n", db_get("project-code", ""));
      showParentProject();
      vid = g.localOpen ? db_lget_int("checkout", 0) : 0;
      if( vid ){
      show_common_info(vid, "checkout:", 1);
        show_common_info(vid, "checkout:", 1, 1);
      }
      fossil_print("check-ins:    %d\n",
             db_int(-1, "SELECT count(*) FROM event WHERE type='ci' /*scan*/"));
    }
    if( verboseFlag || !g.repositoryOpen ){
      Blob vx;
      char *z;
      fossil_version_blob(&vx, 0);
      z = strstr(blob_str(&vx), "version");
      if( z ){
        z += 8;
      }else{
        z = blob_str(&vx);
      }
      fossil_print("fossil:       %z\n", file_fullexename(g.nameOfExe));
      fossil_print("version:      %s", z);
      blob_reset(&vx);
    }
  }else{
    int rid;
    rid = name_to_rid(g.argv[2]);
    if( rid==0 ){
      fossil_panic("no such object: %s\n", g.argv[2]);
      fossil_fatal("no such object: %s", g.argv[2]);
    }
    show_common_info(rid, "uuid:", 1);
    show_common_info(rid, "hash:", 1, 1);
  }
}

/*
** Show the context graph (immediate parents and children) for
** check-in rid and rid2
*/
void render_checkin_context(int rid, int rid2, int parentsOnly, int mFlags){
  Blob sql;
  Stmt q;
  int rx[2];
  int i, n;
  rx[0] = rid;
  rx[1] = rid2;
  n = rid2 ? 2 : 1;
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_www(), -1);

  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY);"
    "DELETE FROM ok;"
  );
  for(i=0; i<n; i++){
    db_multi_exec(
      "INSERT OR IGNORE INTO ok VALUES(%d);"
      "INSERT OR IGNORE INTO ok SELECT pid FROM plink WHERE cid=%d;",
      rx[i], rx[i]
    );
  }
  if( !parentsOnly ){
    for(i=0; i<n; i++){
      db_multi_exec(
        "INSERT OR IGNORE INTO ok SELECT cid FROM plink WHERE pid=%d;", rx[i]
      );
      if( db_table_exists("repository","cherrypick") ){
        db_multi_exec(
          "INSERT OR IGNORE INTO ok "
          "  SELECT parentid FROM cherrypick WHERE childid=%d;"
          "INSERT OR IGNORE INTO ok "
          "  SELECT childid FROM cherrypick WHERE parentid=%d;",
          rx[i], rx[i]
        );
      }
    }
  }
  blob_append_sql(&sql, " AND event.objid IN ok ORDER BY mtime DESC");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  www_print_timeline(&q,
         mFlags
         |TIMELINE_GRAPH
         |TIMELINE_FILLGAPS
         |TIMELINE_NOSCROLL
         |TIMELINE_XMERGE
         |TIMELINE_CHPICK,
       0, 0, 0, rid, rid2, 0);
  db_finalize(&q);
}


/*
** Append the difference between artifacts to the output
*/
static void append_diff(
  const char *zFrom,    /* Diff from this artifact */
  const char *zTo,      /*  ... to this artifact */
  DiffConfig *pCfg      /* The diff configuration */
){
  int fromid;
  int toid;
  Blob from, to;
  if( zFrom ){
    fromid = uuid_to_rid(zFrom, 0);
    content_get(fromid, &from);
    pCfg->zLeftHash = zFrom;
  }else{
    blob_zero(&from);
    pCfg->zLeftHash = 0;
  }
  if( zTo ){
    toid = uuid_to_rid(zTo, 0);
    content_get(toid, &to);
  }else{
    blob_zero(&to);
  }
  if( pCfg->diffFlags & DIFF_SIDEBYSIDE ){
    pCfg->diffFlags |= DIFF_HTML | DIFF_NOTTOOBIG;
  }else{
    pCfg->diffFlags |= DIFF_LINENO | DIFF_HTML | DIFF_NOTTOOBIG;
  }
  text_diff(&from, &to, cgi_output_blob(), pCfg);
  pCfg->zLeftHash = 0;
  blob_reset(&from);
  blob_reset(&to);
}

/*
** Write a line of web-page output that shows changes that have occurred
** to a file between two check-ins.
*/
static void append_file_change_line(
  const char *zCkin,    /* The check-in on which the change occurs */
  const char *zName,    /* Name of the file that has changed */
  const char *zOld,     /* blob.uuid before change.  NULL for added files */
  const char *zNew,     /* blob.uuid after change.  NULL for deletes */
  const char *zOldName, /* Prior name.  NULL if no name change. */
  DiffConfig *pCfg,     /* Flags for text_diff() or NULL to omit all */
  int mperm             /* executable or symlink permission for zNew */
){
  @ <p>
  if( !g.perm.Hyperlink ){
    if( zNew==0 ){
      @ Deleted %h(zName).
    }else if( zOld==0 ){
      @ Added %h(zName).
    }else if( zOldName!=0 && fossil_strcmp(zName,zOldName)!=0 ){
      @ Name change from %h(zOldName) to %h(zName).
    }else if( fossil_strcmp(zNew, zOld)==0 ){
      if( mperm==PERM_EXE ){
        @ %h(zName) became executable.
      }else if( mperm==PERM_LNK ){
        @ %h(zName) became a symlink.
      }else{
        @ %h(zName) became a regular file.
      }
    }else{
      @ Changes to %h(zName).
    }
    if( pCfg ){
      append_diff(zOld, zNew, pCfg);
    }
  }else{
    if( zOld && zNew ){
      if( fossil_strcmp(zOld, zNew)!=0 ){
        if( zOldName!=0 && fossil_strcmp(zName,zOldName)!=0 ){
          @ Renamed and modified
          @ %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zOldName,zOld,zCkin))\
          @ %h(zOldName)</a>
          @ %z(href("%R/artifact/%!S",zOld))[%S(zOld)]</a>
          @ to %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zName,zNew,zCkin))\
          @ %h(zName)</a>
          @ %z(href("%R/artifact/%!S",zNew))[%S(zNew)]</a>.
        }else{
          @ Modified %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zName,zNew,zCkin))\
          @ %h(zName)</a>
          @ from %z(href("%R/artifact/%!S",zOld))[%S(zOld)]</a>
          @ to %z(href("%R/artifact/%!S",zNew))[%S(zNew)]</a>.
        }
      }else if( zOldName!=0 && fossil_strcmp(zName,zOldName)!=0 ){
        @ Name change
        @ from %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zOldName,zOld,zCkin))\
        @ %h(zOldName)</a>
        @ to %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zName,zNew,zCkin))\
        @ %h(zName)</a>.
      }else{
        @ %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zName,zNew,zCkin))\
        @ %h(zName)</a> became
        if( mperm==PERM_EXE ){
          @ executable with contents
        }else if( mperm==PERM_LNK ){
          @ a symlink with target
        }else{
          @ a regular file with contents
        }
        @ %z(href("%R/artifact/%!S",zNew))[%S(zNew)]</a>.
      }
    }else if( zOld ){
      @ Deleted %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zName,zOld,zCkin))\
      @ %h(zName)</a> version %z(href("%R/artifact/%!S",zOld))[%S(zOld)]</a>.
    }else{
      @ Added %z(href("%R/finfo?name=%T&m=%!S&ci=%!S",zName,zNew,zCkin))\
      @ %h(zName)</a> version %z(href("%R/artifact/%!S",zNew))[%S(zNew)]</a>.
    }
    if( zOld && zNew && fossil_strcmp(zOld,zNew)!=0 ){
      if( pCfg ){
        append_diff(zOld, zNew, pCfg);
      }else{ 
        @ &nbsp;&nbsp;
        @ %z(href("%R/fdiff?v1=%!S&v2=%!S",zOld,zNew))[diff]</a>
      }
    }
  }
  @ </p>
}

/*
** Generate javascript to enhance HTML diffs.
*/
void append_diff_javascript(int diffType){
  if( diffType==0 ) return;
  builtin_fossil_js_bundle_or("diff", NULL);
}

/*
** Construct an appropriate diffFlag for text_diff() based on query
** parameters and the to boolean arguments.
*/
DiffConfig *construct_diff_flags(int diffType, DiffConfig *pCfg){
  u64 diffFlags = 0;  /* Zero means do not show any diff */
  if( diffType>0 ){
    int x;
    if( diffType==2 ) diffFlags = DIFF_SIDEBYSIDE;
    if( P_NoBot("w") )  diffFlags |= DIFF_IGNORE_ALLWS;
    if( PD_NoBot("noopt",0)!=0 ) diffFlags |= DIFF_NOOPT;
    diffFlags |= DIFF_STRIP_EOLCR;
    diff_config_init(pCfg, diffFlags);

    /* "dc" query parameter determines lines of context */
    x = atoi(PD("dc","7"));
    if( x>0 ) pCfg->nContext = x;

    /* The "noopt" parameter disables diff optimization */
    return pCfg;
  }else{
    diff_config_init(pCfg, 0);
    return 0;
  }
}

/*
** WEBPAGE: ci_tags
** URL:    /ci_tags?name=ARTIFACTID
**
** Show all tags and properties for a given check-in.
**
** Show information about all tags on a given node.
** This information used to be part of the main /ci page, but it is of
** marginal usefulness.  Better to factor it out into a sub-screen.
*/
void ci_tags_page(void){
static void showTags(int rid, const char *zNotGlob){
  const char *zHash;
  int rid;
  Stmt q;
  int cnt = 0;
  Blob sql;
  char const *zType;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  rid = name_to_rid_www("name");
  if( rid==0 ){
    style_header("Check-in Information Error");
    @ No such object: %h(PD("name",""))
    style_finish_page();
    return;
  }
  cgi_check_for_malice();
  zHash = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  style_header("Tags and Properties");
  zType = whatis_rid_type_label(rid);
  if(!zType) zType = "Artifact";
  @ <h1>Tags and Properties for %s(zType)  \
  @ %z(href("%R/ci/%!S",zHash))%S(zHash)</a></h1>
  db_prepare(&q,
    "SELECT tag.tagid, tagname, "
    "       (SELECT uuid FROM blob WHERE rid=tagxref.srcid AND rid!=%d),"
    "       value, datetime(tagxref.mtime,'localtime'), tagtype,"
    "       value, datetime(tagxref.mtime,toLocal()), tagtype,"
    "       (SELECT uuid FROM blob WHERE rid=tagxref.origid AND rid!=%d)"
    "  FROM tagxref JOIN tag ON tagxref.tagid=tag.tagid"
    " WHERE tagxref.rid=%d AND tagname NOT GLOB '%s'"
    " ORDER BY tagname", rid, rid, rid, zNotGlob
    " WHERE tagxref.rid=%d"
    " ORDER BY tagname /*sort*/", rid, rid, rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagname = db_column_text(&q, 1);
    const char *zSrcUuid = db_column_text(&q, 2);
    const char *zValue = db_column_text(&q, 3);
    const char *zDate = db_column_text(&q, 4);
    int tagtype = db_column_int(&q, 5);
    const char *zOrigUuid = db_column_text(&q, 6);
    cnt++;
    if( cnt==1 ){
      @ <div class="section">Tags And Properties</div>
      @ <ul>
    }
    @ <li>
    if( tagtype==0 ){
      @ <b><s>%h(zTagname)</s></b> cancelled
      @ <span class="infoTagCancelled">%h(zTagname)</span> cancelled
    }else if( zValue ){
      @ <b>%h(zTagname)=%h(zValue)</b>
      @ <span class="infoTag">%h(zTagname)=%h(zValue)</span>
    }else {
      @ <b>%h(zTagname)</b>
      @ <span class="infoTag">%h(zTagname)</span>
    }
    if( tagtype==2 ){
      if( zOrigUuid && zOrigUuid[0] ){
        @ inherited from
        hyperlink_to_uuid(zOrigUuid);
        hyperlink_to_version(zOrigUuid);
      }else{
        @ propagates to descendants
      }
      if( zValue && strcmp(zTagname,"branch")==0 ){
        @ &nbsp;&nbsp;
        @ <a href="%s(g.zBaseURL)/timeline?t=%T(zValue)">branch timeline</a>
      }
    }
    if( zSrcUuid && zSrcUuid[0] ){
      if( tagtype==0 ){
        @ by
      }else{
        @ added by
      }
      hyperlink_to_uuid(zSrcUuid);
      hyperlink_to_version(zSrcUuid);
      @ on
      hyperlink_to_date(zDate,0);
    }
    @ </li>
  }
  db_finalize(&q);
  if( cnt ){
    @ </ul>
  }
}


  @ <div class="section">Context</div>
  db_multi_exec(
/*
** Append the difference between two RIDs to the output
     "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY);"
     "DELETE FROM ok;"
*/
static void append_diff(int fromid, int toid){
  Blob from, to, out;
  content_get(fromid, &from);
  content_get(toid, &to);
  blob_zero(&out);
     "INSERT INTO ok VALUES(%d);"
     "INSERT OR IGNORE INTO ok "
     " SELECT tagxref.srcid"
     "   FROM tagxref JOIN tag ON tagxref.tagid=tag.tagid"
     "  WHERE tagxref.rid=%d;"
     "INSERT OR IGNORE INTO ok "
     " SELECT tagxref.origid"
     "   FROM tagxref JOIN tag ON tagxref.tagid=tag.tagid"
     "  WHERE tagxref.rid=%d;",
     rid, rid, rid
  );
#if 0
  db_multi_exec(
    "SELECT tag.tagid, tagname, "
    "       (SELECT uuid FROM blob WHERE rid=tagxref.srcid AND rid!=%d),"
    "       value, datetime(tagxref.mtime,toLocal()), tagtype,"
    "       (SELECT uuid FROM blob WHERE rid=tagxref.origid AND rid!=%d)"
    "  FROM tagxref JOIN tag ON tagxref.tagid=tag.tagid"
    " WHERE tagxref.rid=%d"
    " ORDER BY tagname /*sort*/", rid, rid, rid
  );
#endif
  blob_zero(&sql);
  text_diff(&from, &to, &out, 5);
  @ %h(blob_str(&out))
  blob_reset(&from);
  blob_reset(&to);
  blob_reset(&out);  
  blob_append(&sql, timeline_query_for_www(), -1);
  blob_append_sql(&sql, " AND event.objid IN ok ORDER BY mtime DESC");
  db_prepare(&q, "%s", blob_sql_text(&sql));
  www_print_timeline(&q, TIMELINE_DISJOINT|TIMELINE_GRAPH|TIMELINE_NOSCROLL,
                     0, 0, 0, rid, 0, 0);
  db_finalize(&q);
  style_finish_page();
}


/*
** WEBPAGE: vinfo
** WEBPAGE: ci
** URL:  /ci?name=RID|ARTIFACTID
** URL:  /ci/ARTIFACTID
**  OR:  /ci?name=ARTIFACTID
**
** Display information about a particular check-in. 
** Display information about a particular check-in.  The exact
**
** We also jump here from /info if the name is a version.
** same information is shown on the /info page if the name query
** parameter to /info describes a check-in.
**
** If the /ci page is used (instead of /vinfo or /info) then the
** default behavior is to show unified diffs of all file changes.
** With /vinfo and /info, only a list of the changed files are
** The ARTIFACTID can be a unique prefix for the HASH of the check-in,
** or a tag or branch name that identifies the check-in.
** shown, without diffs.  This behavior is inverted if the
** "show-version-diffs" setting is turned on.
*/
void ci_page(void){
  Stmt q;
  Stmt q1, q2, q3;
  int rid;
  int isLeaf;
  int showDiff;
  const char *zName;
  int diffType;        /* 0: no diff,  1: unified,  2: side-by-side */
  const char *zName;   /* Name of the check-in to be displayed */
  const char *zUuid;   /* Hash of zName, found via blob.uuid */
  const char *zParent; /* Hash of the parent check-in (if any) */
  const char *zRe;     /* regex parameter */
  ReCompiled *pRe = 0; /* regex */
  const char *zW;               /* URL param for ignoring whitespace */
  const char *zPage = "vinfo";  /* Page that shows diffs */
  const char *zPageHide = "ci"; /* Page that hides diffs */
  const char *zBrName;          /* Branch name */
  DiffConfig DCfg,*pCfg;        /* Type of diff */

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_set_current_feature("vinfo");
  zName = P("name");
  rid = name_to_rid_www("name");
  if( rid==0 ){
    style_header("Check-in Information Error");
    @ No such object: %h(g.argv[2])
    style_footer();
    @ No such object: %h(zName)
    style_finish_page();
    return;
  }
  zRe = P("regex");
  if( zRe ) re_compile(&pRe, zRe, 0);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  zParent = db_text(0,
    "SELECT uuid FROM plink, blob"
    " WHERE plink.cid=%d AND blob.rid=plink.pid AND plink.isprim",
    rid
  );
  isLeaf = !db_exists("SELECT 1 FROM plink WHERE pid=%d", rid);
  db_prepare(&q, 
     "SELECT uuid, datetime(mtime, 'localtime'), user, comment"
  db_prepare(&q1,
     "SELECT uuid, datetime(mtime,toLocal()), user, comment,"
     "       datetime(omtime,toLocal()), mtime"
     "  FROM blob, event"
     " WHERE blob.rid=%d"
     "   AND event.objid=%d",
     rid, rid
  );
  zBrName = branch_of_rid(rid);

  diffType = preferred_diff_type();
  cgi_check_for_malice();
  if( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
  if( db_step(&q1)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q1, 0);
    char *zTitle = mprintf("Check-in [%.10s]", zUuid);
    int nUuid = db_column_bytes(&q1, 0);
    char *zEUser, *zEComment;
    const char *zUser;
    const char *zOrigUser;
    const char *zComment;
    const char *zDate;
    const char *zOrigDate;
    int okWiki = 0;
    Blob wiki_read_links = BLOB_INITIALIZER;
    Blob wiki_add_links = BLOB_INITIALIZER;

    Th_Store("current_checkin", zName);
    style_header(zTitle);
    style_header("Check-in [%S]", zUuid);
    login_anonymous_available();
    free(zTitle);
    zEUser = db_text(0,
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                   "SELECT value FROM tagxref"
                   " WHERE tagid=%d AND rid=%d AND tagtype>0",
                    TAG_USER, rid);
    zEComment = db_text(0, 
    zEComment = db_text(0,
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                   TAG_COMMENT, rid);
    zUser = db_column_text(&q, 2);
    zComment = db_column_text(&q, 3);
    zDate = db_column_text(&q,1);
    @ <div class="section">Overview</div>
    @ <p><table class="label-value">
    @ <tr><th>SHA1&nbsp;Hash:</th><td>%s(zUuid)
    if( g.okSetup ){
      @ (Record ID: %d(rid))
    zOrigUser = db_column_text(&q1, 2);
    zUser = zEUser ? zEUser : zOrigUser;
    zComment = db_column_text(&q1, 3);
    zDate = db_column_text(&q1,1);
    zOrigDate = db_column_text(&q1, 4);
    if( zOrigDate==0 ) zOrigDate = zDate;
    @ <div class="section accordion">Overview</div>
    @ <div class="accordion_panel">
    @ <table class="label-value">
    @ <tr><th>Comment:</th><td class="infoComment">\
    @ %!W(zEComment?zEComment:zComment)</td></tr>

    /* The Download: line */
    if( g.perm.Zip  ){
      char *zPJ = db_get("short-project-name", 0);
      char *zUrl;
      Blob projName;
      int jj;
      if( zPJ==0 ) zPJ = db_get("project-name", "unnamed");
      blob_zero(&projName);
      blob_append(&projName, zPJ, -1);
      blob_trim(&projName);
      zPJ = blob_str(&projName);
      for(jj=0; zPJ[jj]; jj++){
        if( (zPJ[jj]>0 && zPJ[jj]<' ') || strchr("\"*/:<>?\\|", zPJ[jj]) ){
          zPJ[jj] = '_';
        }
      }
      zUrl = mprintf("%R/tarball/%S/%t-%S.tar.gz", zUuid, zPJ, zUuid);
      @ <tr><th>Downloads:</th><td>
      @ %z(href("%s",zUrl))Tarball</a>
      @ | %z(href("%R/zip/%S/%t-%S.zip",zUuid, zPJ,zUuid))ZIP archive</a>
      @ | %z(href("%R/sqlar/%S/%t-%S.sqlar",zUuid,zPJ,zUuid))\
      @ SQL archive</a></td></tr>
      fossil_free(zUrl);
      blob_reset(&projName);
    }

    @ <tr><th>Timelines:</th><td>
    @   %z(href("%R/timeline?f=%!S&unhide",zUuid))family</a>
    if( zParent ){
      @ | %z(href("%R/timeline?p=%!S&unhide",zUuid))ancestors</a>
    }
    if( !isLeaf ){
      @ | %z(href("%R/timeline?d=%!S&unhide",zUuid))descendants</a>
    }
    if( zParent && !isLeaf ){
      @ | %z(href("%R/timeline?dp=%!S&unhide",zUuid))both</a>
    }
    db_prepare(&q2,"SELECT substr(tag.tagname,5) FROM tagxref, tag "
                   " WHERE rid=%d AND tagtype>0 "
                   "   AND tag.tagid=tagxref.tagid "
                   "   AND +tag.tagname GLOB 'sym-*'", rid);
    while( db_step(&q2)==SQLITE_ROW ){
      const char *zTagName = db_column_text(&q2, 0);
      if( fossil_strcmp(zTagName,zBrName)==0 ){
        cgi_printf(" | ");
        style_copy_button(1, "name-br", 0, 0, "%z%h</a>",
          href("%R/timeline?r=%T&unhide",zTagName), zTagName);
        cgi_printf("\n");
        if( wiki_tagid2("branch",zTagName)!=0 ){
          blob_appendf(&wiki_read_links, " | %z%h</a>",
              href("%R/%s?name=branch/%h",
                   (g.perm.Write && g.perm.WrWiki)
                   ? "wikiedit" : "wiki",
                   zTagName), zTagName);
        }else if( g.perm.Write && g.perm.WrWiki ){
          blob_appendf(&wiki_add_links, " | %z%h</a>",
              href("%R/wikiedit?name=branch/%h",zTagName), zTagName);
        }
      }else{
        @  | %z(href("%R/timeline?t=%T&unhide",zTagName))%h(zTagName)</a>
        if( wiki_tagid2("tag",zTagName)!=0 ){
          blob_appendf(&wiki_read_links, " | %z%h</a>",
              href("%R/wiki?name=tag/%h",zTagName), zTagName);
        }else if( g.perm.Write && g.perm.WrWiki ){
          blob_appendf(&wiki_add_links, " | %z%h</a>",
              href("%R/wikiedit?name=tag/%h",zTagName), zTagName);
        }
      }
    }
    db_finalize(&q2);
    @ </td></tr>

    @ <tr><th>Files:</th>
    @   <td>
    @     %z(href("%R/tree?ci=%!S",zUuid))files</a>
    @   | %z(href("%R/fileage?name=%!S",zUuid))file ages</a>
    @   | %z(href("%R/tree?nofiles&type=tree&ci=%!S",zUuid))folders</a>
    @   </td>
    @ </tr>

    @ <tr><th>%s(hname_alg(nUuid)):</th><td>
    style_copy_button(1, "hash-ci", 0, 2, "%.32s<wbr>%s", zUuid, zUuid+32);
    if( g.perm.Setup ){
      @  (Record ID: %d(rid))
    }
    @ </td></tr>
    @ <tr><th>Date:</th><td>
    @ <tr><th>User&nbsp;&amp;&nbsp;Date:</th><td>
    hyperlink_to_user(zUser,zDate," on ");
    hyperlink_to_date(zDate, "</td></tr>");
    if( zEUser ){
    if( zEComment ){
      @ <tr><th>Edited&nbsp;User:</th><td>
      hyperlink_to_user(zEUser,zDate,"</td></tr>");
      @ <tr><th>Original&nbsp;User:</th><td>
      hyperlink_to_user(zUser,zDate,"</td></tr>");
      @ <tr><th>Original&nbsp;Comment:</th>
      @     <td class="infoComment">%!W(zComment)</td></tr>
    }else{
      @ <tr><th>User:</th><td>
      hyperlink_to_user(zUser,zDate,"</td></tr>");
    }
    if( fossil_strcmp(zDate, zOrigDate)!=0
     || fossil_strcmp(zOrigUser, zUser)!=0
    if( zEComment ){
    ){
      @ <tr><th>Edited&nbsp;Comment:</th><td>%w(zEComment)</td></tr>
      @ <tr><th>Original&nbsp;Comment:</th><td>%w(zComment)</td></tr>
      @ <tr><th>Original&nbsp;User&nbsp;&amp;&nbsp;Date:</th><td>
    }else{
      @ <tr><th>Comment:</th><td>%w(zComment)</td></tr>
      hyperlink_to_user(zOrigUser,zOrigDate," on ");
      hyperlink_to_date(zOrigDate, "</td></tr>");
    }
    if( g.okAdmin ){
      db_prepare(&q, 
         "SELECT rcvfrom.ipaddr, user.login, datetime(rcvfrom.mtime)"
    if( g.perm.Admin ){
      db_prepare(&q2,
         "SELECT rcvfrom.ipaddr, user.login, datetime(rcvfrom.mtime),"
               " blob.rcvid"
         "  FROM blob JOIN rcvfrom USING(rcvid) LEFT JOIN user USING(uid)"
         " WHERE blob.rid=%d",
         rid
      );
      if( db_step(&q)==SQLITE_ROW ){
        const char *zIpAddr = db_column_text(&q, 0);
        const char *zUser = db_column_text(&q, 1);
        const char *zDate = db_column_text(&q, 2);
      if( db_step(&q2)==SQLITE_ROW ){
        const char *zIpAddr = db_column_text(&q2, 0);
        const char *zUser = db_column_text(&q2, 1);
        const char *zDate = db_column_text(&q2, 2);
        int rcvid = db_column_int(&q2,3);
        if( zUser==0 || zUser[0]==0 ) zUser = "unknown";
        @ <tr><th>Received&nbsp;From:</th>
        @ <td>%h(zUser) @ %h(zIpAddr) on %s(zDate)</td></tr>
        @ <td>%h(zUser) @ %h(zIpAddr) on %s(zDate) \
        @ (<a href="%R/rcvfrom?rcvid=%d(rcvid)">Rcvid %d(rcvid)</a>)</td></tr>
      }
      db_finalize(&q);
      db_finalize(&q2);
    }

    /* Only show links to edit wiki pages if the users can read wiki
    ** and if the wiki pages already exist */
    if( g.okHistory ){
      const char *zProjName = db_get("project-name", "unnamed");
      @ <tr><th>Timelines:</th><td>
      @    <a href="%s(g.zBaseURL)/timeline?p=%S(zUuid)">ancestors</a>
    if( g.perm.WrWiki
     && g.perm.RdWiki
     && g.perm.Write
     && ((okWiki = wiki_tagid2("checkin",zUuid))!=0 ||
                 blob_size(&wiki_read_links)>0)
     && db_get_boolean("wiki-about",1)
    ){
      const char *zLinks = blob_str(&wiki_read_links);
      @ <tr><th>Edit&nbsp;Wiki:</th><td>\
      if( okWiki ){
        @ %z(href("%R/wikiedit?name=checkin/%s",zUuid))this check-in</a>\
      }else if( zLinks[0] ){
        zLinks += 3;
      }
      @ %s(zLinks)</td></tr>
    }

      @    | <a href="%s(g.zBaseURL)/timeline?d=%S(zUuid)">descendants</a>
      @    | <a href="%s(g.zBaseURL)/timeline?d=%S(zUuid)&p=%S(zUuid)">both</a>
      db_prepare(&q, "SELECT substr(tag.tagname,5) FROM tagxref, tag "
                     " WHERE rid=%d AND tagtype>0 "
                     "   AND tag.tagid=tagxref.tagid "
                     "   AND +tag.tagname GLOB 'sym-*'", rid);
      while( db_step(&q)==SQLITE_ROW ){
        const char *zTagName = db_column_text(&q, 0);
    /* Only show links to create new wiki pages if the users can write wiki
    ** and if the wiki pages do not already exist */
    if( g.perm.WrWiki
     && g.perm.RdWiki
     && g.perm.Write
     && (blob_size(&wiki_add_links)>0 || !okWiki)
     && db_get_boolean("wiki-about",1)
    ){
      const char *zLinks = blob_str(&wiki_add_links);
        @  | <a href="%s(g.zTop)/timeline?t=%T(zTagName)">%h(zTagName)</a>
      @ <tr><th>Add&nbsp;Wiki:</th><td>\
      if( !okWiki ){
        @ %z(href("%R/wikiedit?name=checkin/%s",zUuid))this check-in</a>\
      }else if( zLinks[0] ){
        zLinks += 3;
      }
      db_finalize(&q);
      @ </td></tr>
      @ %s(zLinks)</td></tr>
    }

    if( g.perm.Hyperlink ){
      @ <tr><th>Other&nbsp;Links:</th>
      @   <td>
      @     <a href="%s(g.zTop)/dir?ci=%S(zUuid)">files</a>
      if( fossil_strcmp(zBrName, db_get("main-branch",0))!=0 ){
      @   | <a href="%s(g.zTop)/zip/%s(zProjName)-%S(zUuid).zip?uuid=%s(zUuid)">
      @         ZIP archive</a>
      @   | <a href="%s(g.zTop)/artifact/%S(zUuid)">manifest</a>
      if( g.okWrite ){
        @   | <a href="%s(g.zTop)/ci_edit?r=%S(zUuid)">edit</a>
        @ %z(href("%R/vdiff?branch=%!S", zUuid))branch diff</a> |
      }
      @ %z(href("%R/artifact/%!S",zUuid))manifest</a>
      @ | %z(href("%R/ci_tags/%!S",zUuid))tags</a>
      if( g.perm.Admin ){
        @   | %z(href("%R/mlink?ci=%!S",zUuid))mlink table</a>
      }
      if( g.anon.Write ){
        @   | %z(href("%R/ci_edit?r=%!S",zUuid))edit</a>
      }
      @   </td>
      @ </tr>
    }
    @ </table></p>
    @ </table>
    blob_reset(&wiki_read_links);
    blob_reset(&wiki_add_links);
  }else{
    style_header("Check-in Information");
    login_anonymous_available();
  }
  db_finalize(&q);
  showTags(rid, "");
  @ <div class="section">Changes</div>
  showDiff = g.zPath[0]!='c';
  if( db_get_boolean("show-version-diffs", 0)==0 ){
    showDiff = !showDiff;
    if( showDiff ){
      @ <a href="%s(g.zBaseURL)/vinfo/%T(zName)">[hide&nbsp;diffs]</a><br/>
  db_finalize(&q1);
  @ </div>
  builtin_request_js("accordion.js");
  if( !PB("nowiki") ){
    wiki_render_associated("checkin", zUuid, 0);
  }
  render_backlink_graph(zUuid,
       "<div class=\"section accordion\">References</div>\n");
  @ <div class="section accordion">Context</div><div class="accordion_panel">
  render_checkin_context(rid, 0, 0, 0);
  @ </div><div class="section accordion">Changes</div>
  @ <div class="accordion_panel">
  @ <div class="sectionmenu info-changes-menu">
  /* ^^^ .info-changes-menu is used by diff scroll sync */
  pCfg = construct_diff_flags(diffType, &DCfg);
  DCfg.pRe = pRe;
  zW = (DCfg.diffFlags&DIFF_IGNORE_ALLWS)?"&w":"";
  if( diffType!=0 ){
    @ %z(chref("button","%R/%s/%T?diff=0",zPageHide,zName))\
    @ Hide&nbsp;Diffs</a>
  }
  if( diffType!=1 ){
    @ %z(chref("button","%R/%s/%T?diff=1%s",zPage,zName,zW))\
    @ Unified&nbsp;Diffs</a>
    }else{
      @ <a href="%s(g.zBaseURL)/ci/%T(zName)">[show&nbsp;diffs]</a><br/>
    }
  }
  if( diffType!=2 ){
    @ %z(chref("button","%R/%s/%T?diff=2%s",zPage,zName,zW))\
    @ Side-by-Side&nbsp;Diffs</a>
  }
  }else{
    if( showDiff ){
      @ <a href="%s(g.zBaseURL)/ci/%T(zName)">[hide&nbsp;diffs]</a><br/>
  if( diffType!=0 ){
    if( *zW ){
      @ %z(chref("button","%R/%s/%T",zPage,zName))
      @ Show&nbsp;Whitespace&nbsp;Changes</a>
    }else{
      @ %z(chref("button","%R/%s/%T?w",zPage,zName))
      @ <a href="%s(g.zBaseURL)/vinfo/%T(zName)">[show&nbsp;diffs]</a><br/>
      @ Ignore&nbsp;Whitespace</a>
    }
  }
  if( zParent ){
    @ %z(chref("button","%R/vpatch?from=%!S&to=%!S",zParent,zUuid))
    @ Patch</a>
  }
  if( g.perm.Admin ){
    @ %z(chref("button","%R/mlink?ci=%!S",zUuid))MLink Table</a>
  }
  @ </div>
  if( pRe ){
    @ <p><b>Only differences that match regular expression "%h(zRe)"
    @ are shown.</b></p>
  }
  db_prepare(&q,
     "SELECT pid, fid, name,"
     "       (SELECT uuid FROM blob WHERE rid=mlink.pid),"
     "       (SELECT uuid FROM blob WHERE rid=mlink.fid)"
     "  FROM mlink JOIN filename ON filename.fnid=mlink.fnid"
     " WHERE mlink.mid=%d"
     " ORDER BY name",
     rid
  db_prepare(&q3,
    "SELECT name,"
    "       mperm,"
    "       (SELECT uuid FROM blob WHERE rid=mlink.pid),"
    "       (SELECT uuid FROM blob WHERE rid=mlink.fid),"
    "       (SELECT name FROM filename WHERE filename.fnid=mlink.pfnid)"
    "  FROM mlink JOIN filename ON filename.fnid=mlink.fnid"
    " WHERE mlink.mid=%d AND NOT mlink.isaux"
    "   AND (mlink.fid>0"
           " OR mlink.fnid NOT IN (SELECT pfnid FROM mlink WHERE mid=%d))"
    " ORDER BY name /*sort*/",
    rid, rid
  );
  while( db_step(&q)==SQLITE_ROW ){
  while( db_step(&q3)==SQLITE_ROW ){
    int pid = db_column_int(&q,0);
    int fid = db_column_int(&q,1);
    const char *zName = db_column_text(&q,2);
    const char *zOld = db_column_text(&q,3);
    const char *zNew = db_column_text(&q,4);
    const char *zName = db_column_text(&q3,0);
    int mperm = db_column_int(&q3, 1);
    const char *zOld = db_column_text(&q3,2);
    const char *zNew = db_column_text(&q3,3);
    if( !g.okHistory ){
      if( zNew==0 ){
        @ <p>Deleted %h(zName)</p>
    const char *zOldName = db_column_text(&q3, 4);
        continue;
      }else{
        @ <p>Changes to %h(zName)</p>
      }
    }else if( zOld && zNew ){
      @ <p>Modified <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ from <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a>
      @ to <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)].</a>
      if( !showDiff ){
        @ &nbsp;&nbsp;
        @ <a href="%s(g.zTop)/fdiff?v1=%S(zOld)&v2=%S(zNew)">[diff]</a>
      }
    }else if( zOld ){
    append_file_change_line(zUuid, zName, zOld, zNew, zOldName,
      @ <p>Deleted <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zOld)">[%S(zOld)]</a></p>
      continue;
    }else{
      @ <p>Added <a href="%s(g.zTop)/finfo?name=%T(zName)">%h(zName)</a>
      @ version <a href="%s(g.zTop)/artifact/%s(zNew)">[%S(zNew)]</a></p>
    }
    if( showDiff ){
      @ <blockquote><pre>
      append_diff(pid, fid);
                            pCfg,mperm);
      @ </pre></blockquote>
    }
  }
  }
  db_finalize(&q);
  style_footer();
  db_finalize(&q3);
  @ </div>
  append_diff_javascript(diffType);
  style_finish_page();
}

/*
** WEBPAGE: winfo
** URL:  /winfo?name=RID
** URL:  /winfo?name=HASH
**
** Return information about a wiki page.
** Display information about a wiki page.
*/
void winfo_page(void){
  Stmt q;
  int rid;
  Manifest *pWiki;
  char *zUuid;
  char *zDate;
  Blob wiki;
  int modPending;
  const char *zModAction;
  int tagid;
  int ridNext;

  login_check_credentials();
  if( !g.okRdWiki ){ login_needed(); return; }
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  style_set_current_feature("winfo");
  rid = name_to_rid_www("name");
  if( rid==0 ){
  if( rid==0 || (pWiki = manifest_get(rid, CFTYPE_WIKI, 0))==0 ){
    style_header("Wiki Page Information Error");
    @ No such object: %h(g.argv[2])
    style_footer();
    @ No such object: %h(P("name"))
    style_finish_page();
    return;
  }
  db_prepare(&q, 
     "SELECT substr(tagname, 6, 1000), uuid,"
     "       datetime(event.mtime, 'localtime'), user"
     "  FROM tagxref, tag, blob, event"
  if( g.perm.ModWiki && (zModAction = P("modaction"))!=0 ){
    if( strcmp(zModAction,"delete")==0 ){
      moderation_disapprove(rid);
      /*
      ** Next, check if the wiki page still exists; if not, we cannot
      ** redirect to it.
      */
      if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)"
     " WHERE tagxref.rid=%d"
     "   AND tag.tagid=tagxref.tagid"
     "   AND tag.tagname LIKE 'wiki-%%'"
                    " WHERE rid=%d AND tagname LIKE 'wiki-%%'", rid) ){
     "   AND blob.rid=%d"
     "   AND event.objid=%d",
     rid, rid, rid
  );
        cgi_redirectf("%R/wiki?name=%T", pWiki->zWikiTitle);
        /*NOTREACHED*/
      }else{
        cgi_redirectf("%R/modreq");
        /*NOTREACHED*/
      }
    }
    if( strcmp(zModAction,"approve")==0 ){
      moderation_approve('w', rid);
    }
  }
  cgi_check_for_malice();
  if( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
  style_header("Update of \"%h\"", pWiki->zWikiTitle);
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    char *zTitle = mprintf("Wiki Page %s", zName);
    const char *zDate = db_column_text(&q,2);
  zDate = db_text(0, "SELECT datetime(%.17g,toLocal())", pWiki->rDate);
    const char *zUser = db_column_text(&q,3);
    style_header(zTitle);
    free(zTitle);
    login_anonymous_available();
    @ <div class="section">Overview</div>
    @ <p><table class="label-value">
    @ <tr><th>Version:</th><td>%s(zUuid)</td></tr>
    @ <tr><th>Date:</th><td>
    hyperlink_to_date(zDate, "</td></tr>");
  style_submenu_element("Raw", "%R/artifact/%s", zUuid);
  style_submenu_element("History", "%R/whistory?name=%t", pWiki->zWikiTitle);
  style_submenu_element("Page", "%R/wiki?name=%t", pWiki->zWikiTitle);
  login_anonymous_available();
  @ <div class="section">Overview</div>
  @ <p><table class="label-value">
  @ <tr><th>Artifact&nbsp;ID:</th>
  @ <td>%z(href("%R/artifact/%!S",zUuid))%s(zUuid)</a>
  if( g.perm.Setup ){
    @ (%d(rid))
  }
  modPending = moderation_pending_www(rid);
  @ </td></tr>
  @ <tr><th>Page&nbsp;Name:</th>\
  @ <td>%z(href("%R/whistory?name=%h",pWiki->zWikiTitle))\
  @ %h(pWiki->zWikiTitle)</a></td></tr>
  @ <tr><th>Date:</th><td>
  hyperlink_to_date(zDate, "</td></tr>");
    if( g.okSetup ){
      @ <tr><th>Record ID:</th><td>%d(rid)</td></tr>
    }
    @ <tr><th>Original&nbsp;User:</th><td>
    hyperlink_to_user(zUser, zDate, "</td></tr>");
    if( g.okHistory ){
      @ <tr><th>Commands:</th>
      @   <td>
  @ <tr><th>Original&nbsp;User:</th><td>
  hyperlink_to_user(pWiki->zUser, zDate, "</td></tr>");
  if( pWiki->zMimetype ){
    @ <tr><th>Mimetype:</th><td>%h(pWiki->zMimetype)</td></tr>
  }
  if( pWiki->nParent>0 ){
    int i;
      @     <a href="%s(g.zBaseURL)/whistory?name=%t(zName)">history</a>
      @     | <a href="%s(g.zBaseURL)/artifact/%S(zUuid)">raw-text</a>
      @   </td>
    @ <tr><th>Parent%s(pWiki->nParent==1?"":"s"):</th><td>
    for(i=0; i<pWiki->nParent; i++){
      char *zParent = pWiki->azParent[i];
      @ %z(href("%R/info/%!S",zParent))%s(zParent)</a>
      @ %z(href("%R/wdiff?id=%!S&pid=%!S",zUuid,zParent))(diff)</a>
    }
    @ </td></tr>
      @ </tr>
    }
  }
    @ </table></p>
  }else{
    style_header("Wiki Information");
    rid = 0;
  tagid = wiki_tagid(pWiki->zWikiTitle);
  if( tagid>0 && (ridNext = wiki_next(tagid, pWiki->rDate))>0 ){
    char *zId = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", ridNext);
    @ <tr><th>Next</th>
    @ <td>%z(href("%R/info/%!S",zId))%s(zId)</a></td>
  }
  db_finalize(&q);
  showTags(rid, "wiki-*");
  if( rid ){
    Blob content;
    Manifest m;
    memset(&m, 0, sizeof(m));
    blob_zero(&m.content);
    content_get(rid, &content);
    manifest_parse(&m, &content);
    if( m.type==CFTYPE_WIKI ){
      Blob wiki;
      blob_init(&wiki, m.zWiki, -1);
      @ <div class="section">Content</div>
      wiki_convert(&wiki, 0, 0);
      blob_reset(&wiki);
  @ </table>

  if( g.perm.ModWiki && modPending ){
    @ <div class="section">Moderation</div>
    @ <blockquote>
    @ <form method="POST" action="%R/winfo/%s(zUuid)">
    @ <label><input type="radio" name="modaction" value="delete">
    @ Delete this change</label><br>
    @ <label><input type="radio" name="modaction" value="approve">
    @ Approve this change</label><br>
    @ <input type="submit" value="Submit">
    @ </form>
    @ </blockquote>
  }


  @ <div class="section">Content</div>
  blob_init(&wiki, pWiki->zWiki, -1);
  safe_html_context(DOCSRC_WIKI);
  wiki_render_by_mimetype(&wiki, pWiki->zMimetype);
  blob_reset(&wiki);
    }
    manifest_clear(&m);
  }
  manifest_destroy(pWiki);
  document_emit_js();
  style_finish_page();
}
  style_footer();
}

/*
** Find an check-in based on query parameter zParam and parse its
** manifest.  Return the number of errors.
*/
static Manifest *vdiff_parse_manifest(const char *zParam, int *pRid){
  int rid;

/*
** WEBPAGE: vdiff
** URL: /vdiff?name=RID
  *pRid = rid = name_to_rid_www(zParam);
**
** Show all differences for a particular check-in.
*/
void vdiff_page(void){
  int rid;
  if( rid==0 ){
  Stmt q;
  char *zUuid;

    const char *z = P(zParam);
    if( z==0 || z[0]==0 ){
      webpage_error("Missing \"%s\" query parameter.", zParam);
    }else{
      webpage_error("No such artifact: \"%s\"", z);
    }
  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
    return 0;
  login_anonymous_available();

  }
  rid = name_to_rid_www("name");
  if( rid==0 ){
    fossil_redirect_home();
  if( !is_a_version(rid) ){
    webpage_error("Artifact %s is not a check-in.", P(zParam));
    return 0;
  }
  return manifest_get(rid, CFTYPE_MANIFEST, 0);
}
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  style_header("Check-in [%.10s]", zUuid);

#if 0 /* not used */
/*
** Output a description of a check-in
*/
static void checkin_description(int rid){
  Stmt q;
  db_prepare(&q,
    "SELECT datetime(mtime), "
    "       coalesce(event.ecomment,event.comment),"
    "       coalesce(event.euser,event.user)"
    "  FROM event WHERE type='ci' AND objid=%d",
    rid
    "SELECT datetime(mtime), coalesce(euser,user),"
    "       coalesce(ecomment,comment), uuid,"
    "      (SELECT group_concat(substr(tagname,5), ', ') FROM tag, tagxref"
    "        WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid"
    "          AND tagxref.rid=blob.rid AND tagxref.tagtype>0)"
    "  FROM event, blob"
    " WHERE event.objid=%d AND type='ci'"
    "   AND blob.rid=%d",
    rid, rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zUser = db_column_text(&q, 1);
    const char *zUuid = db_column_text(&q, 3);
    const char *zTagList = db_column_text(&q, 4);
    Blob comment;
    int wikiFlags = WIKI_INLINE|WIKI_NOBADLINKS;
    if( db_get_boolean("timeline-block-markup", 0)==0 ){
      wikiFlags |= WIKI_NOBLOCK;
    }
    hyperlink_to_version(zUuid);
    blob_zero(&comment);
    db_column_blob(&q, 2, &comment);
    wiki_convert(&comment, 0, wikiFlags);
    blob_reset(&comment);
    @ (user:
    hyperlink_to_user(zUser,zDate,",");
    if( zTagList && zTagList[0] && g.perm.Hyperlink ){
      int i;
      const char *z = zTagList;
      Blob links;
      blob_zero(&links);
      while( z && z[0] ){
        for(i=0; z[i] && (z[i]!=',' || z[i+1]!=' '); i++){}
        blob_appendf(&links,
              "%z%#h</a>%.2s",
              href("%R/timeline?r=%#t&nd&c=%t",i,z,zDate), i,z, &z[i]
        );
        if( z[i]==0 ) break;
        z += i+2;
      }
      @ tags: %s(blob_str(&links)),
      blob_reset(&links);
    }else{
      @ tags: %h(zTagList),
    }
    @ date:
    hyperlink_to_date(zDate, ")");
    tag_private_status(rid);
  }
  db_finalize(&q);
}
#endif /* not used */


/*
** WEBPAGE: vdiff
** URL: /vdiff?from=TAG&to=TAG
**
** Show the difference between two check-ins identified by the from= and
** to= query parameters.
**
** Query parameters:
**
**   from=TAG        Left side of the comparison
**   to=TAG          Right side of the comparison
**   branch=TAG      Show all changes on a particular branch
**   diff=INTEGER    0: none, 1: unified, 2: side-by-side
**   glob=STRING     only diff files matching this glob
**   dc=N            show N lines of context around each diff
**   w=BOOLEAN       ignore whitespace when computing diffs
**   nohdr           omit the description at the top of the page
**   nc              omit branch coloration from the header graph
**   inv             "Invert".  Exchange the roles of from= and to=
**
** Show all differences between two check-ins.
*/
void vdiff_page(void){
  int ridFrom, ridTo;
  int diffType = 0;        /* 0: none, 1: unified, 2: side-by-side */
  Manifest *pFrom, *pTo;
  ManifestFile *pFileFrom, *pFileTo;
  const char *zBranch;
  const char *zFrom;
    const char *zUser = db_column_text(&q, 2);
    const char *zComment = db_column_text(&q, 1);
    @ <h2>Check-in %s(zUuid)</h2>
    @ <p>Made by
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate, ":");
    @ %w(zComment). 
    if( g.okHistory ){
  const char *zTo;
  const char *zRe;
  const char *zGlob;
  Glob * pGlob = 0;
  char *zMergeOrigin = 0;
  ReCompiled *pRe = 0;
  DiffConfig DCfg, *pCfg = 0;
  int graphFlags = 0;
  Blob qp;                /* non-glob= query parameters for generated links */
  Blob qpGlob;            /* glob= query parameter for generated links */
  int bInvert = PB("inv");

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  login_anonymous_available();
  fossil_nice_default();
  blob_init(&qp, 0, 0);
  blob_init(&qpGlob, 0, 0);
  diffType = preferred_diff_type();
  zRe = P("regex");
  if( zRe ) re_compile(&pRe, zRe, 0);
  zBranch = P("branch");
  if( zBranch && zBranch[0]==0 ) zBranch = 0;
  if( zBranch ){
    blob_appendf(&qp, "branch=%T", zBranch);
    zMergeOrigin = mprintf("merge-in:%s", zBranch);
    cgi_replace_parameter("from", zMergeOrigin);
    cgi_replace_parameter("to", zBranch);
  }else{
    if( bInvert ){
      @ <a href="%s(g.zBaseURL)/ci/%s(zUuid)">[details]</a>
    }
    @ </p><hr>
      blob_appendf(&qp, "to=%T&from=%T",PD("from",""),PD("to",""));
    }else{
      blob_appendf(&qp, "from=%T&to=%T",PD("from",""),PD("to",""));
    }
  }
  pTo = vdiff_parse_manifest("to", &ridTo);
  if( pTo==0 ) return;
  pFrom = vdiff_parse_manifest("from", &ridFrom);
  if( pFrom==0 ) return;
  zGlob = P("glob");
  /*
  ** Maintenace reminder: we explicitly do _not_ use P_NoBot()
  ** for "from" and "to" because those args can contain legitimate
  ** strings which may trigger the looks-like SQL checks, e.g.
  **   from=merge-in:OR-clause-improvement
  **   to=OR-clause-improvement
  */
  zFrom = P("from");
  zTo = P("to");
  if( bInvert ){
    Manifest *pTemp = pTo;
    const char *zTemp = zTo;
    pTo = pFrom;
    pFrom = pTemp;
    zTo = zFrom;
    zFrom = zTemp;
  }
  if( zGlob ){
    if( !*zGlob ){
      zGlob = NULL;
    }else{
  db_finalize(&q);
  db_prepare(&q,
      blob_appendf(&qpGlob, "&glob=%T", zGlob);
      pGlob = glob_create(zGlob);
    }
  }
  if( PB("nc") ){
    graphFlags |= TIMELINE_NOCOLOR;
    blob_appendf(&qp, "&nc");
     "SELECT pid, fid, name"
     "  FROM mlink, filename"
     " WHERE mlink.mid=%d"
     "   AND filename.fnid=mlink.fnid"
     " ORDER BY name",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int pid = db_column_int(&q,0);
    int fid = db_column_int(&q,1);
    const char *zName = db_column_text(&q,2);
    if( g.okHistory ){
      @ <p><a href="%s(g.zBaseURL)/finfo?name=%T(zName)">%h(zName)</a></p>
  }
  pCfg = construct_diff_flags(diffType, &DCfg);
  if( DCfg.diffFlags & DIFF_IGNORE_ALLWS ){
    blob_appendf(&qp, "&w");
  }
  cgi_check_for_malice();
  style_set_current_feature("vdiff");
  if( zBranch==0 ){
    style_submenu_element("Path", "%R/timeline?me=%T&you=%T", zFrom, zTo);
  }
  if( diffType!=0 ){
    style_submenu_element("Hide Diff", "%R/vdiff?diff=0&%b%b", &qp, &qpGlob);
  }
  if( diffType!=2 ){
    style_submenu_element("Side-by-Side Diff", "%R/vdiff?diff=2&%b%b", &qp,
                          &qpGlob);
  }
  if( diffType!=1 ) {
    style_submenu_element("Unified Diff", "%R/vdiff?diff=1&%b%b", &qp, &qpGlob);
  }
  if( zBranch==0 ){
    style_submenu_element("Invert","%R/vdiff?diff=%d&inv&%b%b", diffType,
                          &qp, &qpGlob);
  }
  if( zGlob ){
    style_submenu_element("Clear glob", "%R/vdiff?diff=%d&%b", diffType, &qp);
  }else{
    style_submenu_element("Patch", "%R/vpatch?from=%T&to=%T%s", zFrom, zTo,
           (DCfg.diffFlags & DIFF_IGNORE_ALLWS)?"&w":"");
  }
  if( diffType!=0 ){
    style_submenu_checkbox("w", "Ignore Whitespace", 0, 0);
  }
  if( zBranch ){
    style_header("Changes On Branch %h", zBranch);
  }else{
    style_header("Check-in Differences");
  }
  if( P("nohdr")==0 ){
    if( zBranch ){
      char *zRealBranch = branch_of_rid(ridTo);
      char *zToUuid = rid_to_uuid(ridTo);
      char *zFromUuid = rid_to_uuid(ridFrom);
      @ <h2>Changes In Branch \
      @ %z(href("%R/timeline?r=%T",zRealBranch))%h(zRealBranch)</a>
      if( ridTo != symbolic_name_to_rid(zRealBranch,"ci") ){
        @ Through %z(href("%R/info/%!S",zToUuid))[%S(zToUuid)]</a>
      }
      @ Excluding Merge-Ins</h2>
      @ <p>This is equivalent to a diff from
      @ <span class='timelineSelected'>\
      @ %z(href("%R/info/%!S",zFromUuid))%S(zFromUuid)</a></span>
      @ to <span class='timelineSelected timelineSecondary'>\
      @ %z(href("%R/info/%!S",zToUuid))%S(zToUuid)</a></span></p>
    }else{
      @ <h2>Difference From <span class='timelineSelected'>\
      @ %z(href("%R/info/%h",zFrom))%h(zFrom)</a></span>
      @ To <span class='timelineSelected timelineSecondary'>\
      @ %z(href("%R/info/%h",zTo))%h(zTo)</a></span></h2>
    }
    render_checkin_context(ridFrom, ridTo, 0, graphFlags);
    if( pRe ){
      @ <p><b>Only differences that match regular expression "%h(zRe)"
      @ are shown.</b></p>
    }
    if( zGlob ){
      @ <p><b>Only files matching the glob "%h(zGlob)" are shown.</b></p>
    }
    @<hr><p>
  }
  blob_reset(&qp);
  blob_reset(&qpGlob);

  manifest_file_rewind(pFrom);
  pFileFrom = manifest_file_next(pFrom, 0);
  manifest_file_rewind(pTo);
  pFileTo = manifest_file_next(pTo, 0);
  DCfg.pRe = pRe;
  while( pFileFrom || pFileTo ){
    int cmp;
    if( pFileFrom==0 ){
      cmp = +1;
    }else if( pFileTo==0 ){
      cmp = -1;
    }else{
      cmp = fossil_strcmp(pFileFrom->zName, pFileTo->zName);
    }
    if( cmp<0 ){
      if( !pGlob || glob_match(pGlob, pFileFrom->zName) ){
        append_file_change_line(zFrom, pFileFrom->zName,
                                pFileFrom->zUuid, 0, 0, pCfg, 0);
      }
      pFileFrom = manifest_file_next(pFrom, 0);
    }else if( cmp>0 ){
      if( !pGlob || glob_match(pGlob, pFileTo->zName) ){
        append_file_change_line(zTo, pFileTo->zName,
                                0, pFileTo->zUuid, 0, pCfg,
                                manifest_file_mperm(pFileTo));
      }
      pFileTo = manifest_file_next(pTo, 0);
    }else if( fossil_strcmp(pFileFrom->zUuid, pFileTo->zUuid)==0 ){
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }else{
      if(!pGlob || (glob_match(pGlob, pFileFrom->zName)
      @ <p>%h(zName)</p>
    }
    @ <blockquote><pre>
    append_diff(pid, fid);
                    || glob_match(pGlob, pFileTo->zName)) ){
        append_file_change_line(zFrom, pFileFrom->zName,
                                pFileFrom->zUuid,
                                pFileTo->zUuid, 0, pCfg,
                                manifest_file_mperm(pFileTo));
      }
      pFileFrom = manifest_file_next(pFrom, 0);
      pFileTo = manifest_file_next(pTo, 0);
    }
  }
  glob_free(pGlob);
  manifest_destroy(pFrom);
  manifest_destroy(pTo);
  append_diff_javascript(diffType);
    @ </pre></blockquote>
  }
  db_finalize(&q);
  style_finish_page();
}

  style_footer();
}
#if INTERFACE
/*
** Possible return values from object_description()
*/
#define OBJTYPE_CHECKIN    0x0001
#define OBJTYPE_CONTENT    0x0002
#define OBJTYPE_WIKI       0x0004
#define OBJTYPE_TICKET     0x0008
#define OBJTYPE_ATTACHMENT 0x0010
#define OBJTYPE_EVENT      0x0020
#define OBJTYPE_TAG        0x0040
#define OBJTYPE_SYMLINK    0x0080
#define OBJTYPE_EXE        0x0100
#define OBJTYPE_FORUM      0x0200

/*
** Possible flags for the second parameter to
** object_description()
*/
#define OBJDESC_DETAIL      0x0001   /* Show more detail */
#define OBJDESC_BASE        0x0002   /* Set <base> using this object */
#endif

/*
** Write a description of an object to the www reply.
**
** If the object is a file then mention:
**
**     * It's artifact ID
**     * All its filenames
**     * The check-in it was part of, with times and users
**
** If the object is a manifest, then mention:
**
**     * It's artifact ID
**     * date of check-in
**     * Comment & user
*/
void object_description(
  int rid,                 /* The artifact ID */
  int linkToView,          /* Add viewer link if true */
  Blob *pDownloadName      /* Fill with an appropriate download name */
int object_description(
  int rid,                 /* The artifact ID for the object to describe */
  u32 objdescFlags,        /* Flags to control display */
  const char *zFileName,   /* For file objects, use this name.  Can be NULL */
  Blob *pDownloadName      /* Fill with a good download name.  Can be NULL */
){
  Stmt q;
  int cnt = 0;
  int nWiki = 0;
  int objType = 0;
  char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  int showDetail = (objdescFlags & OBJDESC_DETAIL)!=0;
  char *prevName = 0;
  int bNeedBase = (objdescFlags & OBJDESC_BASE)!=0;

  db_prepare(&q,
    "SELECT filename.name, datetime(event.mtime),"
    "SELECT filename.name, datetime(event.mtime,toLocal()),"
    "       coalesce(event.ecomment,event.comment),"
    "       coalesce(event.euser,event.user),"
    "       b.uuid"
    "       b.uuid, mlink.mperm,"
    "       coalesce((SELECT value FROM tagxref"
                  "  WHERE tagid=%d AND tagtype>0 AND rid=mlink.mid),'trunk'),"
    "       a.size"
    "  FROM mlink, filename, event, blob a, blob b"
    " WHERE filename.fnid=mlink.fnid"
    "   AND event.objid=mlink.mid"
    "   AND a.rid=mlink.fid"
    "   AND b.rid=mlink.mid"
    "   AND mlink.fid=%d",
    rid
    "   AND mlink.fid=%d"
    "   ORDER BY filename.name, event.mtime /*sort*/",
    TAG_BRANCH, rid
  );
  @ <ul>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zDate = db_column_text(&q, 1);
    const char *zCom = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    const char *zVers = db_column_text(&q, 4);
    int mPerm = db_column_int(&q, 5);
    const char *zBr = db_column_text(&q, 6);
    int szFile = db_column_int(&q,7);
    int sameFilename = prevName!=0 && fossil_strcmp(zName,prevName)==0;
    if( zFileName && fossil_strcmp(zName,zFileName)!=0 ) continue;
    if( sameFilename && !showDetail ){
    if( cnt>0 ){
      @ Also file
    }else{
      @ File
    }
      if( cnt==1 ){
        @ %z(href("%R/whatis/%!S",zUuid))[more...]</a>
      }
      cnt++;
      continue;
    }
    if( !sameFilename ){
      if( prevName && showDetail ) {
        @ </ul>
      }
      if( mPerm==PERM_LNK ){
        @ <li>Symbolic link
        objType |= OBJTYPE_SYMLINK;
      }else if( mPerm==PERM_EXE ){
        @ <li>Executable file
        objType |= OBJTYPE_EXE;
      }else{
        @ <li>File
        if( bNeedBase ){
          bNeedBase = 0;
          style_set_current_page("doc/%S/%s",zVers,zName);
        }
    if( g.okHistory ){
      @ <a href="%s(g.zBaseURL)/finfo?name=%T(zName)">%h(zName)</a>
      }
      objType |= OBJTYPE_CONTENT;
      @ %z(href("%R/finfo?name=%T&ci=%!S&m=%!S",zName,zVers,zUuid))\
    }else{
      @ %h(zName)
    }
    @ part of check-in
    hyperlink_to_uuid(zVers);
    @ - %w(zCom) by 
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");
      @ %h(zName)</a>
      tag_private_status(rid);
      if( showDetail ){
        @ <ul>
      }
      prevName = fossil_strdup(zName);
    }
    if( showDetail ){
      @ <li>
      hyperlink_to_date(zDate,"");
      @ &mdash; part of check-in
      hyperlink_to_version(zVers);
    }else{
      @ &mdash; part of check-in
      hyperlink_to_version(zVers);
      @ at
      hyperlink_to_date(zDate,"");
    }
    if( zBr && zBr[0] ){
      @ on branch %z(href("%R/timeline?r=%T",zBr))%h(zBr)</a>
    }
    @ &mdash; %!W(zCom) (user:
    hyperlink_to_user(zUser,zDate,",");
    @ size: %d(szFile))
    if( g.perm.Hyperlink ){
      @ %z(href("%R/annotate?filename=%T&checkin=%!S",zName,zVers))
      @ [annotate]</a>
      @ %z(href("%R/blame?filename=%T&checkin=%!S",zName,zVers))
      @ [blame]</a>
      @ %z(href("%R/timeline?uf=%!S",zUuid))[check-ins&nbsp;using]</a>
      if( fileedit_is_editable(zName) ){
        @ %z(href("%R/fileedit?filename=%T&checkin=%!S",zName,zVers))[edit]</a>
      }
    }
    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_append(pDownloadName, zName, -1);
    }
  }
  if( prevName && showDetail ){
    @ </ul>
  }
  @ </ul>
  free(prevName);
  db_finalize(&q);
  db_prepare(&q, 
    "SELECT substr(tagname, 6, 10000), datetime(event.mtime),"
  db_prepare(&q,
    "SELECT substr(tagname, 6, 10000), datetime(event.mtime, toLocal()),"
    "       coalesce(event.euser, event.user)"
    "  FROM tagxref, tag, event"
    " WHERE tagxref.rid=%d"
    "   AND tag.tagid=tagxref.tagid" 
    "   AND tag.tagid=tagxref.tagid"
    "   AND tag.tagname LIKE 'wiki-%%'"
    "   AND event.objid=tagxref.rid",
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPagename = db_column_text(&q, 0);
    const char *zDate = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    if( cnt>0 ){
      @ Also wiki page
    }else{
      @ Wiki page
    }
    if( g.okHistory ){
    objType |= OBJTYPE_WIKI;
      @ [<a href="%s(g.zBaseURL)/wiki?name=%t(zPagename)">%h(zPagename)</a>]
    }else{
      @ [%h(zPagename)]
    @ [%z(href("%R/wiki?name=%t",zPagename))%h(zPagename)</a>] by
    }
    @ by
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");
    nWiki++;
    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_appendf(pDownloadName, "%s.wiki", zPagename);
      blob_appendf(pDownloadName, "%s.txt", zPagename);
    }
  }
  db_finalize(&q);
  if( nWiki==0 ){
    db_prepare(&q,
      "SELECT datetime(mtime), user, comment, type, uuid"
      "SELECT datetime(mtime, toLocal()), user, comment, type, uuid, tagid"
      "  FROM event, blob"
      " WHERE event.objid=%d"
      "   AND blob.rid=%d",
      rid, rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zDate = db_column_text(&q, 0);
      const char *zUser = db_column_text(&q, 1);
      const char *zCom = db_column_text(&q, 2);
      const char *zType = db_column_text(&q, 3);
      const char *zUuid = db_column_text(&q, 4);
      int eventTagId = db_column_int(&q, 5);
      if( cnt>0 ){
        @ Also
      }
      if( zType[0]=='w' ){
        @ Wiki edit
        objType |= OBJTYPE_WIKI;
      }else if( zType[0]=='t' ){
        @ Ticket change
        objType |= OBJTYPE_TICKET;
      }else if( zType[0]=='c' ){
        @ Manifest of check-in
        objType |= OBJTYPE_CHECKIN;
      }else if( zType[0]=='e' ){
        if( eventTagId != 0) {
          @ Instance of technote
          objType |= OBJTYPE_EVENT;
          hyperlink_to_event_tagid(db_column_int(&q, 5));
      }else{
        @ Control file referencing
        }else{
          @ Attachment to technote
        }
      }else if( zType[0]=='f' ){
        objType |= OBJTYPE_FORUM;
        @ Forum post
      }else{
        @ Tag referencing
      }
      if( zType[0]!='e' || eventTagId == 0){
      hyperlink_to_uuid(zUuid);
      @ - %w(zCom) by
        hyperlink_to_version(zUuid);
      }
      @ - %!W(zCom) by
      hyperlink_to_user(zUser,zDate," on");
      hyperlink_to_date(zDate, ".");
      if( pDownloadName && blob_size(pDownloadName)==0 ){
        blob_appendf(pDownloadName, "%.10s.txt", zUuid);
        blob_appendf(pDownloadName, "%S.txt", zUuid);
      }
      tag_private_status(rid);
      cnt++;
    }
    db_finalize(&q);
  }
  db_prepare(&q, 
    "SELECT target, filename, datetime(mtime), user, src"
  db_prepare(&q,
    "SELECT target, filename, datetime(mtime, toLocal()), user, src"
    "  FROM attachment"
    " WHERE src=(SELECT uuid FROM blob WHERE rid=%d)"
    " ORDER BY mtime DESC /*sort*/",
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTarget = db_column_text(&q, 0);
    const char *zFilename = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zUser = db_column_text(&q, 3);
    /* const char *zSrc = db_column_text(&q, 4); */
    if( cnt>0 ){
      @ Also attachment "%h(zFilename)" to
    }else{
      @ Attachment "%h(zFilename)" to
    }
    objType |= OBJTYPE_ATTACHMENT;
    if( strlen(zTarget)==UUID_SIZE && validate16(zTarget,UUID_SIZE) ){
    if( fossil_is_artifact_hash(zTarget) ){
      char zShort[20];
      memcpy(zShort, zTarget, 10);
      if( g.okHistory && g.okRdTkt ){
        @ ticket [<a href="%s(g.zTop)/tktview?name=%s(zShort)">%s(zShort)</a>]
      }else{
        @ ticket [%s(zShort)]
      }
    }else{
      if( g.okHistory && g.okRdWiki ){
        @ wiki page [<a href="%s(g.zTop)/wiki?name=%t(zTarget)">%h(zTarget)</a>]
      if ( db_exists("SELECT 1 FROM tag WHERE tagname='tkt-%q'",
            zTarget)
      ){
        if( g.perm.Hyperlink && g.anon.RdTkt ){
          @ ticket [%z(href("%R/tktview?name=%!S",zTarget))%S(zTarget)</a>]
        }else{
          @ ticket [%S(zTarget)]
        }
      }else if( db_exists("SELECT 1 FROM tag WHERE tagname='event-%q'",
            zTarget)
      ){
        if( g.perm.Hyperlink && g.anon.RdWiki ){
          @ tech note [%z(href("%R/technote/%h",zTarget))%S(zTarget)</a>]
        }else{
          @ tech note [%S(zTarget)]
        }
      }else{
        if( g.perm.Hyperlink && g.anon.RdWiki ){
          @ wiki page [%z(href("%R/wiki?name=%t",zTarget))%h(zTarget)</a>]
        }else{
          @ wiki page [%h(zTarget)]
        }
      }
    }else{
      if( g.perm.Hyperlink && g.anon.RdWiki ){
        @ wiki page [%z(href("%R/wiki?name=%t",zTarget))%h(zTarget)</a>]
      }else{
        @ wiki page [%h(zTarget)]
      }
    }
    @ added by
    hyperlink_to_user(zUser,zDate," on");
    hyperlink_to_date(zDate,".");
    cnt++;
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_append(pDownloadName, zFilename, -1);
    }
    tag_private_status(rid);
  }
  db_finalize(&q);
  if( db_exists("SELECT 1 FROM tagxref WHERE rid=%d AND tagid=%d",
                rid, TAG_CLUSTER) ){
    @ Cluster
    cnt++;
  }
  if( cnt==0 ){
    @ Control artifact.
    @ Unrecognized artifact
    if( pDownloadName && blob_size(pDownloadName)==0 ){
      blob_appendf(pDownloadName, "%.10s.txt", zUuid);
      blob_appendf(pDownloadName, "%S.txt", zUuid);
    }
  }else if( linkToView && g.okHistory ){
    @ <a href="%s(g.zBaseURL)/artifact/%S(zUuid)">[view]</a>
    tag_private_status(rid);
  }
  return objType;
}

/*
** SETTING: preferred-diff-type         width=16 default=0
**
** The preferred-diff-type setting determines the preferred diff format
** for web pages if the format is not otherwise specified, for example
** by a query parameter or cookie.  Allowed values:
**
**    1    Unified diff
**    2    Side-by-side diff
**
** If this setting is omitted or has a value of 0 or less, then it
** is ignored.
*/
/*
** Return the preferred diff type.
**
**    0 = No diff at all.
**    1 = unified diff
**    2 = side-by-side diff
**
** To determine the preferred diff type, the following values are
** consulted in the order shown.  The first available source wins.
**
**    *  The "diff" query parameter
**    *  The "diff" field of the user display cookie
**    *  The "preferred-diff-type" setting
**    *  1 for mobile and 2 for desktop, based on the UserAgent
*/
int preferred_diff_type(void){
  int dflt;
  static char zDflt[2]
    /*static b/c cookie_link_parameter() does not copy it!*/;
  dflt = db_get_int("preferred-diff-type",-99);
  if( dflt<=0 ) dflt = user_agent_is_likely_mobile() ? 1 : 2;
  zDflt[0] = dflt + '0';
  zDflt[1] = 0;
  cookie_link_parameter("diff","diff", zDflt);
  return atoi(PD_NoBot("diff",zDflt));

}


/*
** WEBPAGE: fdiff
** URL: fdiff?v1=HASH&v2=HASH
**
** Two arguments, v1 and v2, identify the artifacts to be diffed.
** Show diff side by side unless sbs is 0.  Generate plain text if
** "patch" is present, otherwise generate "pretty" HTML.
**
** Alternative URL:  fdiff?from=filename1&to=filename2&ci=checkin
**
** If the "from" and "to" query parameters are both present, then they are
** the names of two files within the check-in "ci" that are diffed.  If the
** "ci" parameter is omitted, then the most recent check-in ("tip") is
** used.
**
** Additional parameters:
**
**      dc=N             Show N lines of context around each diff
**      patch            Use the patch diff format
** Two arguments, v1 and v2, are integers.  Show the difference between
** the two records.
**      regex=REGEX      Only show differences that match REGEX
**      sbs=BOOLEAN      Turn side-by-side diffs on and off (default: on)
**      verbose=BOOLEAN  Show more detail when describing artifacts
**      w=BOOLEAN        Ignore whitespace
*/
void diff_page(void){
  int v1 = name_to_rid(P("v1"));
  int v2 = name_to_rid(P("v2"));
  Blob c1, c2, diff;
  int v1, v2;
  int isPatch = P("patch")!=0;
  int diffType;          /* 0: none, 1: unified,  2: side-by-side */
  char *zV1;
  char *zV2;
  const char *zRe;
  ReCompiled *pRe = 0;
  u32 objdescFlags = 0;
  int verbose = PB("verbose");
  DiffConfig DCfg;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  diff_config_init(&DCfg, 0);
  diffType = preferred_diff_type();
  if( P("from") && P("to") ){
    v1 = artifact_from_ci_and_filename("from");
    v2 = artifact_from_ci_and_filename("to");
  }else{
    Stmt q;
    v1 = name_to_rid_www("v1");
    v2 = name_to_rid_www("v2");

    /* If the two file versions being compared both have the same
    ** filename, then offer an "Annotate" link that constructs an
    ** annotation between those version. */
    db_prepare(&q,
      "SELECT (SELECT substr(uuid,1,20) FROM blob WHERE rid=a.mid),"
      "       (SELECT substr(uuid,1,20) FROM blob WHERE rid=b.mid),"
      "       (SELECT name FROM filename WHERE filename.fnid=a.fnid)"
      "  FROM mlink a, event ea, mlink b, event eb"
      " WHERE a.fid=%d"
      "   AND b.fid=%d"
      "   AND a.fnid=b.fnid"
      "   AND a.fid!=a.pid"
      "   AND b.fid!=b.pid"
      "   AND ea.objid=a.mid"
      "   AND eb.objid=b.mid"
      " ORDER BY ea.mtime ASC, eb.mtime ASC",
      v1, v2
    );
    if( db_step(&q)==SQLITE_ROW ){
      const char *zCkin = db_column_text(&q, 0);
      const char *zOrig = db_column_text(&q, 1);
      const char *zFN = db_column_text(&q, 2);
      style_submenu_element("Annotate",
        "%R/annotate?origin=%s&checkin=%s&filename=%T",
        zOrig, zCkin, zFN);
    }
    db_finalize(&q);
  }
  if( v1==0 || v2==0 ) fossil_redirect_home();
  zRe = P("regex");
  cgi_check_for_malice();
  if( zRe ) re_compile(&pRe, zRe, 0);
  if( verbose ) objdescFlags |= OBJDESC_DETAIL;
  if( isPatch ){
    Blob c1, c2, *pOut;
    DiffConfig DCfg;
    pOut = cgi_output_blob();
    cgi_set_content_type("text/plain");
    DCfg.diffFlags = DIFF_VERBOSE;
    content_get(v1, &c1);
    content_get(v2, &c2);
    DCfg.pRe = pRe;
    text_diff(&c1, &c2, pOut, &DCfg);
    blob_reset(&c1);
    blob_reset(&c2);
    return;
  }

  zV1 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v1);
  zV2 = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", v2);
  construct_diff_flags(diffType, &DCfg);
  DCfg.diffFlags |= DIFF_HTML;

  style_set_current_feature("fdiff");
  style_header("Diff");
  style_submenu_checkbox("w", "Ignore Whitespace", 0, 0);
  if( diffType==2 ){
    style_submenu_element("Unified Diff", "%R/fdiff?v1=%T&v2=%T&diff=1",
                           P("v1"), P("v2"));
  }else{
    style_submenu_element("Side-by-side Diff", "%R/fdiff?v1=%T&v2=%T&diff=2",
                           P("v1"), P("v2"));
  }
  style_submenu_checkbox("verbose", "Verbose", 0, 0);
  style_submenu_element("Patch", "%R/fdiff?v1=%T&v2=%T&patch",
                        P("v1"), P("v2"));

  if( P("smhdr")!=0 ){
  @ <h2>Differences From:</h2>
  @ <blockquote>
  object_description(v1, 1, 0);
    @ <h2>Differences From Artifact
    @ %z(href("%R/artifact/%!S",zV1))[%S(zV1)]</a> To
    @ %z(href("%R/artifact/%!S",zV2))[%S(zV2)]</a>.</h2>
  }else{
    @ <h2>Differences From
    @ Artifact %z(href("%R/artifact/%!S",zV1))[%S(zV1)]</a>:</h2>
    object_description(v1, objdescFlags,0, 0);
  @ </blockquote>
  @ <h2>To:</h2>
    @ <h2>To Artifact %z(href("%R/artifact/%!S",zV2))[%S(zV2)]</a>:</h2>
  @ <blockquote>
  object_description(v2, 1, 0);
  @ </blockquote>
    object_description(v2, objdescFlags,0, 0);
  }
  if( pRe ){
    @ <b>Only differences that match regular expression "%h(zRe)"
    @ are shown.</b>
    DCfg.pRe = pRe;
  }
  @ <hr>
  @ <blockquote><pre>
  content_get(v1, &c1);
  content_get(v2, &c2);
  blob_zero(&diff);
  text_diff(&c1, &c2, &diff, 4);
  append_diff(zV1, zV2, &DCfg);
  blob_reset(&c1);
  blob_reset(&c2);
  @ %h(blob_str(&diff))
  append_diff_javascript(diffType);
  @ </pre></blockquote>
  blob_reset(&diff);
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: raw
** URL: /raw?name=ARTIFACTID&m=TYPE
** 
** URL: /raw/ARTIFACTID
** URL: /raw?ci=BRANCH&filename=NAME
**
** Additional query parameters:
**
**    m=MIMETYPE       The mimetype is MIMETYPE
**    at=FILENAME      Content-disposition; attachment; filename=FILENAME;
**
** Return the uninterpreted content of an artifact.  Used primarily
** to view artifacts that are images.
*/
void rawartifact_page(void){
  int rid;
  const char *zMime;
  Blob content;

  rid = name_to_rid_www("name");
  int rid = 0;
  char *zUuid;

  (void)P("at")/*for cgi_check_for_malice()*/;
  (void)P("m");
  if( P("ci") ){
    rid = artifact_from_ci_and_filename(0);
  }
  if( rid==0 ){
    rid = name_to_rid_www("name");
  zMime = PD("m","application/x-fossil-artifact");
  }
  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  if( rid==0 ) fossil_redirect_home();
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  etag_check(ETAG_HASH, zUuid);
  if( fossil_strcmp(P("name"), zUuid)==0 && login_is_nobody() ){
    g.isConst = 1;
  }
  free(zUuid);
  deliver_artifact(rid, P("m"));
}


/*
** WEBPAGE: secureraw
** URL: /secureraw/HASH?m=TYPE
**
** Return the uninterpreted content of an artifact.  This is similar
** to /raw except in this case the only way to specify the artifact
** is by the full-length SHA1 or SHA3 hash.  Abbreviations are not
** accepted.
*/
void secure_rawartifact_page(void){
  int rid = 0;
  const char *zName = PD("name", "");

  (void)P("at")/*for cgi_check_for_malice()*/;
  (void)P("m");
  cgi_check_for_malice();
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", zName);
  if( rid==0 ){
    cgi_set_status(404, "Not Found");
    @ Unknown artifact: "%h(zName)"
    return;
  }
  g.isConst = 1;
  deliver_artifact(rid, P("m"));
}


/*
** WEBPAGE: jchunk hidden
** URL: /jchunk/HASH?from=N&to=M
**
** Return lines of text from a file as a JSON array - one entry in the
** array for each line of text.
**
** **Warning:**  This is an internal-use-only interface that is subject to
** change at any moment.  External application should not use this interface
** since the application will break when this interface changes, and this
** interface will undoubtedly change.
**
** This page is intended to be used in an XHR from javascript on a
** diff page, to return unseen context to fill in additional context
** when the user clicks on the appropriate button. The response is
** always in JSON form and errors are reported as documented for
** ajax_route_error().
*/
void jchunk_page(void){
  int rid = 0;
  const char *zName = PD("name", "");
  int iFrom = atoi(PD("from","0"));
  int iTo = atoi(PD("to","0"));
  int ln;
  int go = 1;
  const char *zSep;
  Blob content;
  Blob line;
  Blob *pOut;

  if(0){
    ajax_route_error(400, "Just testing client-side error handling.");
    return;
  }

  login_check_credentials();
  cgi_check_for_malice();
  if( !g.perm.Read ){
    ajax_route_error(403, "Access requires Read permissions.");
    return;
  }
#if 1
  /* Re-enable this block once this code is integrated somewhere into
     the UI. */
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", zName);
  if( rid==0 ){
    ajax_route_error(404, "Unknown artifact: %h", zName);
    return;
  }
#else
  /* This impl is only to simplify "manual" testing via the JS
     console. */
  rid = symbolic_name_to_rid(zName, "*");
  if( rid==0 ){
    ajax_route_error(404, "Unknown artifact: %h", zName);
    return;
  }else if( rid<0 ){
    ajax_route_error(418, "Ambiguous artifact name: %h", zName);
    return;
  }
#endif
  if( iFrom<1 || iTo<iFrom ){
    ajax_route_error(500, "Invalid line range from=%d, to=%d.",
                     iFrom, iTo);
    return;
  }
  content_get(rid, &content);
  g.isConst = 1;
  cgi_set_content_type("application/json");
  ln = 0;
  while( go && ln<iFrom ){
    go = blob_line(&content, &line);
    ln++;
  }
  pOut = cgi_output_blob();
  blob_append(pOut, "[\n", 2);
  zSep = 0;
  while( go && ln<=iTo ){
    if( zSep ) blob_append(pOut, zSep, 2);
    blob_trim(&line);
    blob_append_json_literal(pOut, blob_buffer(&line), blob_size(&line));
    zSep = ",\n";
    go = blob_line(&content, &line);
    ln++;
  }
  blob_appendf(pOut,"]\n");
  blob_reset(&content);
}

/*
** Generate a verbatim artifact as the result of an HTTP request.
** If zMime is not NULL, use it as the mimetype.  If zMime is
** NULL, guess at the mimetype based on the filename
** associated with the artifact.
*/
void deliver_artifact(int rid, const char *zMime){
  Blob content;
  const char *zAttachName = P("at");
  if( zMime==0 ){
    char *zFN = (char*)zAttachName;
    if( zFN==0 ){
      zFN = db_text(0, "SELECT filename.name FROM mlink, filename"
                       " WHERE mlink.fid=%d"
                       "   AND filename.fnid=mlink.fnid", rid);
    }
    if( zFN==0 ){
      /* Look also at the attachment table */
      zFN = db_text(0, "SELECT attachment.filename FROM attachment, blob"
                       " WHERE blob.rid=%d"
                       "   AND attachment.src=blob.uuid", rid);
    }
    if( zFN ){
      zMime = mimetype_from_name(zFN);
    }
    if( zMime==0 ){
      zMime = "application/x-fossil-artifact";
    }
  }
  content_get(rid, &content);
  fossil_free(style_csp(1));
  cgi_set_content_type(zMime);
  if( zAttachName ){
    cgi_content_disposition_filename(zAttachName);
  }
  cgi_set_content(&content);
}

/*
** Render a hex dump of a file.
*/
static void hexdump(Blob *pBlob){
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  for(i=0; i<n; i+=16){
    j = 0;
    zLine[0] = zHex[(i>>24)&0xf];
    zLine[1] = zHex[(i>>16)&0xf];
    zLine[2] = zHex[(i>>8)&0xf];
    zLine[3] = zHex[i&0xf];
    zLine[4] = ':';
    sprintf(zLine, "%04x: ", i);
    sqlite3_snprintf(sizeof(zLine), zLine, "%04x: ", i);
    for(j=0; j<16; j++){
      k = 5+j*3;
      zLine[k] = ' ';
      if( i+j<n ){
        unsigned char c = x[i+j];
        zLine[k+1] = zHex[c>>4];
        zLine[k+2] = zHex[c&0xf];
      }else{
        zLine[k+1] = ' ';
        zLine[k+2] = ' ';
      }
    }
    zLine[53] = ' ';
    zLine[54] = ' ';
    cgi_append_content(zLine, 55);
    for(j=0; j<16; j++){
    for(j=k=0; j<16; j++){
      k = j+55;
      if( i+j<n ){
        unsigned char c = x[i+j];
        if( c>=0x20 && c<=0x7e ){
          zLine[k] = c;
        if( c>'>' && c<=0x7e ){
          zLine[k++] = c;
        }else if( c=='>' ){
          zLine[k++] = '&';
          zLine[k++] = 'g';
          zLine[k++] = 't';
          zLine[k++] = ';';
        }else if( c=='<' ){
          zLine[k++] = '&';
          zLine[k++] = 'l';
          zLine[k++] = 't';
          zLine[k++] = ';';
        }else if( c=='&' ){
          zLine[k++] = '&';
          zLine[k++] = 'a';
          zLine[k++] = 'm';
          zLine[k++] = 'p';
          zLine[k++] = ';';
        }else if( c>=' ' ){
          zLine[k++] = c;
        }else{
          zLine[k] = '.';
          zLine[k++] = '.';
        }
      }else{
        zLine[k] = 0;
        break;
      }
    }
    zLine[71] = 0;
    @ %h(zLine)
    zLine[k++] = '\n';
    cgi_append_content(zLine, k);
  }
}

/*
** WEBPAGE: hexdump
** URL: /hexdump?name=ARTIFACTID
** 
**
** Show the complete content of a file identified by ARTIFACTID
** as preformatted text.
**
** Other parameters:
**
**     verbose              Show more detail when describing the object
*/
void hexdump_page(void){
  int rid;
  Blob content;
  Blob downloadName;
  char *zUuid;
  u32 objdescFlags = 0;

  rid = name_to_rid_www("name");
  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  if( rid==0 ) fossil_redirect_home();
  cgi_check_for_malice();
  if( g.okAdmin ){
  if( g.perm.Admin ){
    const char *zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
    if( db_exists("SELECT 1 FROM shun WHERE uuid='%s'", zUuid) ){
      style_submenu_element("Unshun","Unshun", "%s/shun?uuid=%s&sub=1",
    if( db_exists("SELECT 1 FROM shun WHERE uuid=%Q", zUuid) ){
      style_submenu_element("Unshun", "%R/shun?accept=%s&sub=1#delshun", zUuid);
            g.zTop, zUuid);
    }else{
      style_submenu_element("Shun","Shun", "%s/shun?shun=%s#addshun",
      style_submenu_element("Shun", "%R/shun?shun=%s#addshun", zUuid);
            g.zTop, zUuid);
    }
  }
  style_header("Hex Artifact Content");
  zUuid = db_text("?","SELECT uuid FROM blob WHERE rid=%d", rid);
  etag_check(ETAG_HASH, zUuid);
  @ <h2>Artifact %s(zUuid):</h2>
  @ <blockquote>
  @ <h2>Artifact
  style_copy_button(1, "hash-ar", 0, 2, "%s", zUuid);
  if( g.perm.Setup ){
    @  (%d(rid)):</h2>
  }else{
    @ :</h2>
  }
  blob_zero(&downloadName);
  if( P("verbose")!=0 ) objdescFlags |= OBJDESC_DETAIL;
  object_description(rid, 0, &downloadName);
  style_submenu_element("Download", "Download", 
        "%s/raw/%T?name=%s", g.zTop, blob_str(&downloadName), zUuid);
  object_description(rid, objdescFlags, 0, &downloadName);
  style_submenu_element("Download", "%R/raw/%s?at=%T",
                        zUuid, file_tail(blob_str(&downloadName)));
  @ </blockquote>
  @ <hr>
  content_get(rid, &content);
  if( !g.isHuman ){
    /* Prevent robots from running hexdump on megabyte-sized source files
    ** and there by eating up lots of CPU time and bandwidth.  There is
    ** no good reason for a robot to need a hexdump. */
    @ <p>A hex dump of this file is not available.
    @  Please download the raw binary file and generate a hex dump yourself.</p>
  }else{
  @ <blockquote><pre>
  hexdump(&content);
  @ </pre></blockquote>
  style_footer();
    @ <blockquote><pre>
    hexdump(&content);
    @ </pre></blockquote>
  }
  style_finish_page();
}

/*
** Look for "ci" and "filename" query parameters.  If found, try to
** use them to extract the record ID of an artifact for the file.
**
** Also look for "fn" and "name" as an aliases for "filename".  If any
** "filename" or "fn" or "name" are present but "ci" is missing, then
** use "tip" as the default value for "ci".
**
** If zNameParam is not NULL, then use that parameter as the filename
** rather than "fn" or "filename" or "name".  the zNameParam is used
** for the from= and to= query parameters of /fdiff.
*/
int artifact_from_ci_and_filename(void){
int artifact_from_ci_and_filename(const char *zNameParam){
  const char *zFilename;
  const char *zCI;
  int cirid;
  Blob content;
  Manifest m;
  int i;
  Manifest *pManifest;
  ManifestFile *pFile;
  int rid = 0;

  if( zNameParam ){
    zFilename = P(zNameParam);
  }else{
    zFilename = P("filename");
    if( zFilename==0 ){
  zCI = P("ci");
  if( zCI==0 ) return 0;
  zFilename = P("filename");
      zFilename = P("fn");
    }
    if( zFilename==0 ){
      zFilename = P("name");
    }
  }
  if( zFilename==0 ) return 0;

  zCI = PD("ci", "tip");
  cirid = name_to_rid_www("ci");
  if( !content_get(cirid, &content) ) return 0;
  if( !manifest_parse(&m, &content) ) return 0;
  if( m.type!=CFTYPE_MANIFEST ) return 0;
  for(i=0; i<m.nFile; i++){
    if( strcmp(zFilename, m.aFile[i].zName)==0 ){
      return db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", m.aFile[i].zUuid);
    }
  }
  return 0;
  cirid = name_to_typed_rid(zCI, "ci");
  if( cirid<=0 ) return 0;
  pManifest = manifest_get(cirid, CFTYPE_MANIFEST, 0);
  if( pManifest==0 ) return 0;
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest,0))!=0 ){
    if( fossil_strcmp(zFilename, pFile->zName)==0 ){
      rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", pFile->zUuid);
      break;
    }
  }
  manifest_destroy(pManifest);
  return rid;
}

/*
** The "z" argument is a string that contains the text of a source
** code file and nZ is its length in bytes. This routine appends that
** text to the HTTP reply with line numbering.
**
** zName is the content's file name, if any (it may be NULL). If that
** name contains a '.' then the part after the final '.' is used as
** the X part of a "language-X" CSS class on the generated CODE block.
**
** zLn is the ?ln= parameter for the HTTP query.  If there is an argument,
** then highlight that line number and scroll to it once the page loads.
** If there are two line numbers, highlight the range of lines.
** Multiple ranges can be highlighed by adding additional line numbers
** separated by a non-digit character (also not one of [-,.]).
**
** If includeJS is true then the JS code associated with line
** numbering is also emitted, else it is not. If this routine is
** called multiple times in a single app run, the JS is emitted only
** once. Note that when using this routine to emit Ajax responses, the
** JS should be not be included, as it will not get imported properly
** into the response's rendering.
*/
void output_text_with_line_numbers(
  const char *z,
  int nZ,
  const char *zName,
  const char *zLn,
  int includeJS
){
  int iStart, iEnd;    /* Start and end of region to highlight */
  int n = 0;           /* Current line number */
  int i = 0;           /* Loop index */
  int iTop = 0;        /* Scroll so that this line is on top of screen. */
  int nLine = 0;       /* content line count */
  int nSpans = 0;      /* number of distinct zLn spans */
  const char *zExt = file_extension(zName);
  static int emittedJS = 0; /* emitted shared JS yet? */
  Stmt q;

  iStart = iEnd = atoi(zLn);
  db_multi_exec(
    "CREATE TEMP TABLE lnos(iStart INTEGER PRIMARY KEY, iEnd INTEGER)");
  if( iStart>0 ){
    do{
      while( fossil_isdigit(zLn[i]) ) i++;
      if( zLn[i]==',' || zLn[i]=='-' || zLn[i]=='.' ){
        i++;
        while( zLn[i]=='.' ){ i++; }
        iEnd = atoi(&zLn[i]);
        while( fossil_isdigit(zLn[i]) ) i++;
      }
      while( fossil_isdigit(zLn[i]) ) i++;
      if( iEnd<iStart ) iEnd = iStart;
      db_multi_exec(
        "INSERT OR REPLACE INTO lnos VALUES(%d,%d)", iStart, iEnd
      );
      ++nSpans;
      iStart = iEnd = atoi(&zLn[i++]);
    }while( zLn[i] && iStart && iEnd );
  }
  /*cgi_printf("<!-- ln span count=%d -->", nSpans);*/
  cgi_append_content("<table class='numbered-lines'><tbody>"
                     "<tr><td class='line-numbers'><pre>", -1);
  iStart = iEnd = 0;
  count_lines(z, nZ, &nLine);
  for( n=1 ; n<=nLine; ++n ){
    const char * zAttr = "";
    const char * zId = "";
    if(nSpans>0 && iEnd==0){/*Grab the next range of zLn marking*/
      db_prepare(&q, "SELECT iStart, iEnd FROM lnos "
                 "WHERE iStart >= %d ORDER BY iStart", n);
      if( db_step(&q)==SQLITE_ROW ){
        iStart = db_column_int(&q, 0);
        iEnd = db_column_int(&q, 1);
        if(!iTop){
          iTop = iStart - 15 + (iEnd-iStart)/4;
          if( iTop>iStart - 2 ) iTop = iStart-2;
        }
      }else{
        /* Note that overlapping multi-spans, e.g. 10-15+12-20,
           can cause us to miss a row. */
        iStart = iEnd = 0;
      }
      db_finalize(&q);
      --nSpans;
      /*cgi_printf("<!-- iStart=%d, iEnd=%d -->", iStart, iEnd);*/
    }
    if(n==iTop) {
      zId = " id='scrollToMe'";
    }
    if(n==iStart){/*Figure out which CSS class(es) this line needs...*/
      if(n==iEnd){
        zAttr = " class='selected-line start end'";
        iEnd = 0;
      }else{
        zAttr = " class='selected-line start'";
      }
      iStart = 0;
    }else if(n==iEnd){
      zAttr = " class='selected-line end'";
      iEnd = 0;
    }else if( n>iStart && n<iEnd ){
      zAttr = " class='selected-line'";
    }
    cgi_printf("<span%s%s>%6d</span>\n", zId, zAttr, n)
      /* ^^^ explicit \n is necessary for text-mode browsers. */;
  }
  cgi_append_content("</pre></td><td class='file-content'><pre>",-1);
  if(zExt && *zExt){
    cgi_printf("<code class='language-%h'>",zExt);
  }else{
    cgi_append_content("<code>", -1);
  }
  cgi_printf("%z", htmlize(z, nZ));
  CX("</code></pre></td></tr></tbody></table>\n");
  if(includeJS && !emittedJS){
    emittedJS = 1;
    if( db_int(0, "SELECT EXISTS(SELECT 1 FROM lnos)") ){
      builtin_request_js("scroll.js");
    }
    builtin_fossil_js_bundle_or("numbered-lines", NULL);
  }
}

/*
** COMMAND: test-line-numbers
**
** Usage: %fossil test-line-numbers FILE ?LN-SPEC?
**
*/
void cmd_test_line_numbers(void){
  Blob content = empty_blob;
  const char * zLn = "";
  const char * zFilename = 0;

  if(g.argc < 3){
    usage("FILE");
  }else if(g.argc>3){
    zLn = g.argv[3];
  }
  db_find_and_open_repository(0,0);
  zFilename = g.argv[2];
  fossil_print("%s %s\n", zFilename, zLn);

  blob_read_from_file(&content, zFilename, ExtFILE);
  output_text_with_line_numbers(blob_str(&content), blob_size(&content),
                                zFilename, zLn, 0);
  blob_reset(&content);
  fossil_print("%b\n", cgi_output_blob());
}

/*
** WEBPAGE: artifact
** WEBPAGE: file
** WEBPAGE: whatis
**
** Typical usage:
**
** URL: /artifact?name=ARTIFACTID
** URL: /artifact?ci=CHECKIN&filename=PATH
** 
** Show the complete content of a file identified by ARTIFACTID
** as preformatted text.
**    /artifact/HASH
**    /whatis/HASH
**    /file/NAME
**
** Additional query parameters:
**
**   ln              - show line numbers
**   ln=N            - highlight line number N
**   ln=M-N          - highlight lines M through N inclusive
**   ln=M-N+Y-Z      - highlight lines M through N and Y through Z (inclusive)
**   verbose         - show more detail in the description
**   download        - redirect to the download (artifact page only)
**   name=NAME       - filename or hash as a query parameter
**   filename=NAME   - alternative spelling for "name="
**   fn=NAME         - alternative spelling for "name="
**   ci=VERSION      - The specific check-in to use with "name=" to
**                     identify the file.
**   txt             - Force display of unformatted source text
**
** The /artifact page show the complete content of a file
** identified by HASH.  The /whatis page shows only a description
** of how the artifact is used.  The /file page shows the most recent
** version of the file or directory called NAME, or a list of the
** top-level directory if NAME is omitted.
**
** For /artifact and /whatis, the name= query parameter can refer to
** either the name of a file, or an artifact hash.  If the ci= query
** parameter is also present, then name= must refer to a file name.
** If ci= is omitted, then the hash interpretation is preferred but
** if name= cannot be understood as a hash, a default "tip" value is
** used for ci=.
**
** For /file, name= can only be interpreted as a filename.  As before,
** a default value of "tip" is used for ci= if ci= is omitted.
*/
void artifact_page(void){
  int rid = 0;
  Blob content;
  const char *zMime;
  Blob downloadName;
  int renderAsWiki = 0;
  int renderAsHtml = 0;
  int renderAsSvg = 0;
  int objType;
  int asText;
  const char *zUuid;
  if( P("ci") && P("filename") ){
    rid = artifact_from_ci_and_filename();
  const char *zUuid = 0;
  u32 objdescFlags = OBJDESC_BASE;
  int descOnly = fossil_strcmp(g.zPath,"whatis")==0;
  int isFile = fossil_strcmp(g.zPath,"file")==0;
  const char *zLn = P("ln");
  const char *zName = P("name");
  const char *zCI = P("ci");
  HQuery url;
  char *zCIUuid = 0;
  }
  if( rid==0 ){
    rid = name_to_rid_www("name");
  int isSymbolicCI = 0;  /* ci= exists and is a symbolic name, not a hash */
  int isBranchCI = 0;    /* ci= refers to a branch name */
  char *zHeader = 0;
  }

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( rid==0 ) fossil_redirect_home();
  if( g.okAdmin ){
    const char *zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
    if( db_exists("SELECT 1 FROM shun WHERE uuid='%s'", zUuid) ){
      style_submenu_element("Unshun","Unshun", "%s/shun?uuid=%s&sub=1",
            g.zTop, zUuid);
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  style_set_current_feature("artifact");

  /* Capture and normalize the name= and ci= query parameters */
  if( zName==0 ){
    zName = P("filename");
    if( zName==0 ){
      zName = P("fn");
    }
  }
  if( zCI && strlen(zCI)==0 ){ zCI = 0; }
  if( zCI
   && name_to_uuid2(zCI, "ci", &zCIUuid)
   && sqlite3_strnicmp(zCIUuid, zCI, strlen(zCI))!=0
  ){
    isSymbolicCI = 1;
    isBranchCI = branch_includes_uuid(zCI, zCIUuid);
  }

  /* The name= query parameter (or at least one of its alternative
  ** spellings) is required.  Except for /file, show a top-level
  ** directory listing if name= is omitted.
  */
  if( zName==0 ){
    if( isFile ){
      if( P("ci")==0 ) cgi_set_query_parameter("ci","tip");
      page_tree();
      return;
    }
    style_header("Missing name= query parameter");
    @ The name= query parameter is missing
    style_finish_page();
    return;
  }

  url_initialize(&url, g.zPath);
  url_add_parameter(&url, "name", zName);
  url_add_parameter(&url, "ci", zCI);     /* no-op if zCI is NULL */

  if( zCI==0 && !isFile ){
    /* If there is no ci= query parameter, then prefer to interpret
    ** name= as a hash for /artifact and /whatis.  But not for /file.
    ** For /file, a name= without a ci= will prefer to use the default
    ** "tip" value for ci=. */
    rid = name_to_rid(zName);
  }
  if( rid==0 ){
    rid = artifact_from_ci_and_filename(0);
  }

  if( rid==0 ){  /* Artifact not found */
    if( isFile ){
      Stmt q;
      /* For /file, also check to see if name= refers to a directory,
      ** and if so, do a listing for that directory */
      int nName = (int)strlen(zName);
      if( nName && zName[nName-1]=='/' ) nName--;
      if( db_exists(
         "SELECT 1 FROM filename"
         " WHERE name GLOB '%.*q/*' AND substr(name,1,%d)=='%.*q/';",
         nName, zName, nName+1, nName, zName
      ) ){
        if( P("ci")==0 ) cgi_set_query_parameter("ci","tip");
        page_tree();
        return;
      }
      /* No directory found, look for an historic version of the file
      ** that was subsequently deleted. */
      db_prepare(&q,
        "SELECT fid, uuid FROM mlink, filename, event, blob"
        " WHERE filename.name=%Q"
        "   AND mlink.fnid=filename.fnid AND mlink.fid>0"
        "   AND event.objid=mlink.mid"
        "   AND blob.rid=mlink.mid"
        " ORDER BY event.mtime DESC",
        zName
      );
      if( db_step(&q)==SQLITE_ROW ){
        rid = db_column_int(&q, 0);
        zCI = fossil_strdup(db_column_text(&q, 1));
        zCIUuid = fossil_strdup(zCI);
        url_add_parameter(&url, "ci", zCI);
      }
      db_finalize(&q);
      if( rid==0 ){
        style_header("No such file");
        @ File '%h(zName)' does not exist in this repository.
      }
    }else{
      style_submenu_element("Shun","Shun", "%s/shun?shun=%s#addshun",
            g.zTop, zUuid);
      style_header("No such artifact");
      @ Artifact '%h(zName)' does not exist in this repository.
    }
    if( rid==0 ){
      style_finish_page();
      return;
    }
  }
  style_header("Artifact Content");

  if( descOnly || P("verbose")!=0 ){
    url_add_parameter(&url, "verbose", "1");
    objdescFlags |= OBJDESC_DETAIL;
  }
  zUuid = db_text("?", "SELECT uuid FROM blob WHERE rid=%d", rid);
  etag_check(ETAG_HASH, zUuid);

  asText = P("txt")!=0;
  if( isFile ){
    if( zCI==0 || fossil_strcmp(zCI,"tip")==0 ){
      zCI = "tip";
      @ <h2>File %z(href("%R/finfo?name=%T&m&ci=tip",zName))%h(zName)</a>
      @ from the %z(href("%R/info/tip"))latest check-in</a></h2>
    }else{
      const char *zPath;
      Blob path;
      blob_zero(&path);
      hyperlinked_path(zName, &path, zCI, "dir", "", LINKPATH_FINFO);
      zPath = blob_str(&path);
      @ <h2>File %s(zPath) artifact \
      style_copy_button(1,"hash-fid",0,0,"%z%S</a> ",
           href("%R/info/%s",zUuid),zUuid);
      if( isBranchCI ){
        @ on branch %z(href("%R/timeline?r=%T",zCI))%h(zCI)</a></h2>
      }else if( isSymbolicCI ){
        @ part of check-in %z(href("%R/info/%!S",zCIUuid))%s(zCI)</a></h2>
      }else{
        @ part of check-in %z(href("%R/info/%!S",zCIUuid))%S(zCIUuid)</a></h2>
      }
      blob_reset(&path);
    }
    style_submenu_element("Artifact", "%R/artifact/%S", zUuid);
    zMime = mimetype_from_name(zName);
    style_submenu_element("Annotate", "%R/annotate?filename=%T&checkin=%T",
                          zName, zCI);
    style_submenu_element("Blame", "%R/blame?filename=%T&checkin=%T",
                          zName, zCI);
    style_submenu_element("Doc", "%R/doc/%T/%T", zCI, zName);
    blob_init(&downloadName, zName, -1);
    objType = OBJTYPE_CONTENT;
  }else{
  @ <h2>Artifact %s(zUuid)</h2>
  @ <blockquote>
  blob_zero(&downloadName);
  object_description(rid, 0, &downloadName);
    @ <h2>Artifact
    style_copy_button(1, "hash-ar", 0, 2, "%s", zUuid);
    if( g.perm.Setup ){
      @  (%d(rid)):</h2>
    }else{
      @ :</h2>
    }
    blob_zero(&downloadName);
    if( asText ) objdescFlags &= ~OBJDESC_BASE;
    objType = object_description(rid, objdescFlags,
  style_submenu_element("Download", "Download", 
          "%s/raw/%T?name=%s", g.zTop, blob_str(&downloadName), zUuid);
  zMime = mimetype_from_name(blob_str(&downloadName));
                                (isFile?zName:0), &downloadName);
    zMime = mimetype_from_name(blob_str(&downloadName));
  }
  if( !descOnly && P("download")!=0 ){
    cgi_redirectf("%R/raw/%s?at=%T",
          db_text("x", "SELECT uuid FROM blob WHERE rid=%d", rid),
          file_tail(blob_str(&downloadName)));
    /*NOTREACHED*/
  }
  if( g.perm.Admin ){
    const char *zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
    if( db_exists("SELECT 1 FROM shun WHERE uuid=%Q", zUuid) ){
      style_submenu_element("Unshun", "%R/shun?accept=%s&sub=1#accshun", zUuid);
    }else{
      style_submenu_element("Shun", "%R/shun?shun=%s#addshun",zUuid);
    }
  }

  if( isFile ){
    if( isSymbolicCI ){
      zHeader = mprintf("%s at %s", file_tail(zName), zCI);
      style_set_current_page("doc/%t/%T", zCI, zName);
    }else if( zCIUuid && zCIUuid[0] ){
      zHeader = mprintf("%s at [%S]", file_tail(zName), zCIUuid);
      style_set_current_page("doc/%S/%T", zCIUuid, zName);
    }else{
      zHeader = mprintf("%s", file_tail(zName));
      style_set_current_page("doc/tip/%T", zName);
    }
  }else if( descOnly ){
    zHeader = mprintf("Artifact Description [%S]", zUuid);
  }else{
    zHeader = mprintf("Artifact [%S]", zUuid);
  }
  style_header("%s", zHeader);
  fossil_free(zCIUuid);
  fossil_free(zHeader);
  if( !isFile && g.perm.Admin ){
    Stmt q;
    db_prepare(&q,
      "SELECT coalesce(user.login,rcvfrom.uid),"
      "       datetime(rcvfrom.mtime,toLocal()),"
      "       coalesce(rcvfrom.ipaddr,'unknown')"
      "  FROM blob, rcvfrom LEFT JOIN user ON user.uid=rcvfrom.uid"
      " WHERE blob.rid=%d"
      "   AND rcvfrom.rcvid=blob.rcvid;", rid);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zUser = db_column_text(&q,0);
      const char *zDate = db_column_text(&q,1);
      const char *zIp = db_column_text(&q,2);
      @ <p>Received on %s(zDate) from %h(zUser) at %h(zIp).</p>
    }
    db_finalize(&q);
  }
  style_submenu_element("Download", "%R/raw/%s?at=%T", zUuid, file_tail(zName));
  if( db_exists("SELECT 1 FROM mlink WHERE fid=%d", rid) ){
    style_submenu_element("Check-ins Using", "%R/timeline?uf=%s", zUuid);
  }
  if( zMime ){
    if( strcmp(zMime, "text/html")==0 ){
      if( P("txt") ){
        style_submenu_element("Html", "Html",
    if( fossil_strcmp(zMime, "text/html")==0 ){
      if( asText ){
        style_submenu_element("Html", "%s", url_render(&url, "txt", 0, 0, 0));
                              "%s/artifact?name=%s", g.zTop, zUuid);
      }else{
        renderAsHtml = 1;
        style_submenu_element("Text", "Text",
        style_submenu_element("Text", "%s", url_render(&url, "txt", "1", 0, 0));
                              "%s/artifact?name=%s&txt=1", g.zTop, zUuid);
      }
    }else if( strcmp(zMime, "application/x-fossil-wiki")==0 ){
      if( P("txt") ){
        style_submenu_element("Wiki", "Wiki",
                              "%s/artifact?name=%s", g.zTop, zUuid);
    }else if( fossil_strcmp(zMime, "text/x-fossil-wiki")==0
           || fossil_strcmp(zMime, "text/x-markdown")==0
           || fossil_strcmp(zMime, "text/x-pikchr")==0 ){
      if( asText ){
        style_submenu_element(zMime[7]=='p' ? "Pikchr" : "Wiki",
                              "%s", url_render(&url, "txt", 0, 0, 0));
      }else{
        renderAsWiki = 1;
        style_submenu_element("Text", "%s", url_render(&url, "txt", "1", 0, 0));
      }
    }else if( fossil_strcmp(zMime, "image/svg+xml")==0 ){
      if( asText ){
        style_submenu_element("Svg", "%s", url_render(&url, "txt", 0, 0, 0));
      }else{
        renderAsSvg = 1;
        style_submenu_element("Text", "%s", url_render(&url, "txt", "1", 0, 0));
      }
    }
    if( fileedit_is_editable(zName) ){
        style_submenu_element("Text", "Text",
                              "%s/artifact?name=%s&txt=1", g.zTop, zUuid);
      }
    }
      style_submenu_element("Edit",
                            "%R/fileedit?filename=%T&checkin=%!S",
                            zName, zCI);
    }
  }
  if( (objType & (OBJTYPE_WIKI|OBJTYPE_TICKET))!=0 ){
    style_submenu_element("Parsed", "%R/info/%s", zUuid);
  }
  if( descOnly ){
    style_submenu_element("Content", "%R/artifact/%s", zUuid);
  @ </blockquote>
  @ <hr>
  content_get(rid, &content);
  if( renderAsWiki ){
    wiki_convert(&content, 0, 0);
  }else if( renderAsHtml ){
    @ <div>
    cgi_append_content(blob_buffer(&content), blob_size(&content));
    @ </div>
  }else{
    zMime = mimetype_from_content(&content);
  }else{
    @ <hr>
    content_get(rid, &content);
    if( renderAsWiki ){
      safe_html_context(DOCSRC_FILE);
      wiki_render_by_mimetype(&content, zMime);
      document_emit_js();
    }else if( renderAsHtml ){
      @ <iframe src="%R/raw/%s(zUuid)"
      @ width="100%%" frameborder="0" marginwidth="0" marginheight="0"
      @ sandbox="allow-same-origin" id="ifm1">
      @ </iframe>
      @ <script nonce="%h(style_nonce())">/* info.c:%d(__LINE__) */
      @ document.getElementById("ifm1").addEventListener("load",
      @   function(){
      @     this.height=this.contentDocument.documentElement.scrollHeight + 75;
      @   }
      @ );
      @ </script>
    }else if( renderAsSvg ){
      @ <object type="image/svg+xml" data="%R/raw/%s(zUuid)"></object>
    }else{
      const char *zContentMime;
    @ <blockquote>
    if( zMime==0 ){
      @ <pre>
      @ %h(blob_str(&content))
      @ </pre>
      style_submenu_element("Hex", "%R/hexdump?name=%s", zUuid);
      if( zLn==0 || atoi(zLn)==0 ){
        style_submenu_checkbox("ln", "Line Numbers", 0, 0);
      }
      blob_to_utf8_no_bom(&content, 0);
      zContentMime = mimetype_from_content(&content);
      if( zMime==0 ) zMime = zContentMime;
      @ <blockquote class="file-content">
      if( zContentMime==0 ){
        const char *z, *zFileName, *zExt;
        z = blob_str(&content);
        zFileName = db_text(0,
         "SELECT name FROM mlink, filename"
         " WHERE filename.fnid=mlink.fnid"
         "   AND mlink.fid=%d",
         rid);
        zExt = zFileName ? file_extension(zFileName) : 0;
        if( zLn ){
          output_text_with_line_numbers(z, blob_size(&content),
                                        zFileName, zLn, 1);
        }else if( zExt && zExt[0] ){
          @ <pre>
          @ <code class="language-%s(zExt)">%h(z)</code>
          @ </pre>
        }else{
          @ <pre>
          @ %h(z)
          @ </pre>
      style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);
    }else if( strncmp(zMime, "image/", 6)==0 ){
      @ <img src="%s(g.zBaseURL)/raw?name=%s(zUuid)&m=%s(zMime)"></img>
      style_submenu_element("Hex","Hex", "%s/hexdump?name=%s", g.zTop, zUuid);
    }else{
        }
      }else if( strncmp(zMime, "image/", 6)==0 ){
        @ <p>(file is %d(blob_size(&content)) bytes of image data)</i></p>
        @ <p><img src="%R/raw/%s(zUuid)?m=%s(zMime)"></p>
        style_submenu_element("Image", "%R/raw/%s?m=%s", zUuid, zMime);
      }else if( strncmp(zMime, "audio/", 6)==0 ){
        @ <p>(file is %d(blob_size(&content)) bytes of sound data)</i></p>
        @ <audio controls src="%R/raw/%s(zUuid)?m=%s(zMime)">
        @ (Not supported by this browser)
        @ </audio>
      }else{
      @ <pre>
      hexdump(&content);
        @ <i>(file is %d(blob_size(&content)) bytes of binary data)</i>
      @ </pre>
    }
    @ </blockquote>
  }
  style_footer();
}  
      }
      @ </blockquote>
    }
  }
  style_finish_page();
}

/*
** WEBPAGE: tinfo
** URL: /tinfo?name=ARTIFACTID
**
** Show the details of a ticket change control artifact.
*/
void tinfo_page(void){
  int rid;
  Blob content;
  char *zDate;
  const char *zUuid;
  char zTktName[20];
  Manifest m;

  char zTktName[HNAME_MAX+1];
  Manifest *pTktChng;
  int modPending;
  const char *zModAction;
  char *zTktTitle;
  login_check_credentials();
  if( !g.okRdTkt ){ login_needed(); return; }
  if( !g.perm.RdTkt ){ login_needed(g.anon.RdTkt); return; }
  rid = name_to_rid_www("name");
  if( rid==0 ){ fossil_redirect_home(); }
  cgi_check_for_malice();
  zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( g.okAdmin ){
    if( db_exists("SELECT 1 FROM shun WHERE uuid='%s'", zUuid) ){
      style_submenu_element("Unshun","Unshun", "%s/shun?uuid=%s&sub=1",
  if( g.perm.Admin ){
    if( db_exists("SELECT 1 FROM shun WHERE uuid=%Q", zUuid) ){
      style_submenu_element("Unshun", "%R/shun?accept=%s&sub=1#accshun", zUuid);
            g.zTop, zUuid);
    }else{
      style_submenu_element("Shun","Shun", "%s/shun?shun=%s#addshun",
            g.zTop, zUuid);
      style_submenu_element("Shun", "%R/shun?shun=%s#addshun", zUuid);
    }
  }
  pTktChng = manifest_get(rid, CFTYPE_TICKET, 0);
  if( pTktChng==0 ) fossil_redirect_home();
  zDate = db_text(0, "SELECT datetime(%.12f,toLocal())", pTktChng->rDate);
  sqlite3_snprintf(sizeof(zTktName), zTktName, "%s", pTktChng->zTicketUuid);
  if( g.perm.ModTkt && (zModAction = P("modaction"))!=0 ){
    if( strcmp(zModAction,"delete")==0 ){
      moderation_disapprove(rid);
      /*
      ** Next, check if the ticket still exists; if not, we cannot
      ** redirect to it.
      */
      if( db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'",
                    zTktName) ){
        cgi_redirectf("%R/tktview/%s", zTktName);
        /*NOTREACHED*/
      }else{
        cgi_redirectf("%R/modreq");
        /*NOTREACHED*/
      }
    }
    if( strcmp(zModAction,"approve")==0 ){
      moderation_approve('t', rid);
    }
  }
  content_get(rid, &content);
  if( manifest_parse(&m, &content)==0 ){
    fossil_redirect_home();
  zTktTitle = db_table_has_column("repository", "ticket", "title" )
      ? db_text("(No title)",
                "SELECT title FROM ticket WHERE tkt_uuid=%Q", zTktName)
  }
  if( m.type!=CFTYPE_TICKET ){
      : 0;
  style_set_current_feature("tinfo");
    fossil_redirect_home();
  }
  style_header("Ticket Change Details");
  zDate = db_text(0, "SELECT datetime(%.12f)", m.rDate);
  memcpy(zTktName, m.zTicketUuid, 10);
  zTktName[10] = 0;
  if( g.okHistory ){
  style_submenu_element("Raw", "%R/artifact/%s", zUuid);
  style_submenu_element("History", "%R/tkthistory/%s#%S", zTktName,zUuid);
  style_submenu_element("Page", "%R/tktview/%t", zTktName);
  style_submenu_element("Timeline", "%R/tkttimeline/%t", zTktName);
  if( P("plaintext") ){
    @ <h2>Changes to ticket <a href="%s(m.zTicketUuid)">%s(zTktName)</a></h2>
    @
    @ <p>By %h(m.zUser) on %s(zDate).  See also:
    @ <a href="%s(g.zTop)/artifact/%T(zUuid)">artifact content</a>, and
    style_submenu_element("Formatted", "%R/info/%s", zUuid);
    @ <a href="%s(g.zTop)/tkthistory/%s(m.zTicketUuid)">ticket history</a>
    @ </p>
  }else{
    @ <h2>Changes to ticket %s(zTktName)</h2>
    @
    @ <p>By %h(m.zUser) on %s(zDate).
    @ </p>
    style_submenu_element("Plaintext", "%R/info/%s?plaintext", zUuid);
  }

  @ <div class="section">Overview</div>
  @ <p><table class="label-value">
  @ <tr><th>Artifact&nbsp;ID:</th>
  @ <td>%z(href("%R/artifact/%!S",zUuid))%s(zUuid)</a>
  if( g.perm.Setup ){
    @ (%d(rid))
  }
  modPending = moderation_pending_www(rid);
  @ <tr><th>Ticket:</th>
  @ <td>%z(href("%R/tktview/%s",zTktName))%s(zTktName)</a>
  if( zTktTitle ){
        @<br>%h(zTktTitle)
  }
  @
  @ <ol>
  @</td></tr>
  @ <tr><th>User&nbsp;&amp;&nbsp;Date:</th><td>
  hyperlink_to_user(pTktChng->zUser, zDate, " on ");
  hyperlink_to_date(zDate, "</td></tr>");
  @ </table>
  free(zDate);
  free(zTktTitle);

  if( g.perm.ModTkt && modPending ){
    @ <div class="section">Moderation</div>
    @ <blockquote>
    @ <form method="POST" action="%R/tinfo/%s(zUuid)">
    @ <label><input type="radio" name="modaction" value="delete">
    @ Delete this change</label><br>
    @ <label><input type="radio" name="modaction" value="approve">
    @ Approve this change</label><br>
    @ <input type="submit" value="Submit">
    @ </form>
    @ </blockquote>
  }

  @ <div class="section">Changes</div>
  @ <p>
  ticket_output_change_artifact(&m);
  manifest_clear(&m);
  style_footer();
  ticket_output_change_artifact(pTktChng, 0, 1, 0);
  manifest_destroy(pTktChng);
  style_finish_page();
}


/*
** WEBPAGE: info
** URL: info/ARTIFACTID
** URL: info/NAME
**
** The argument is a artifact ID which might be a baseline or a file or
** a ticket changes or a wiki edit or something else. 
** The NAME argument is any valid artifact name: an artifact hash,
** a timestamp, a tag name, etc.
**
** Because NAME can match so many different things (commit artifacts,
** wiki pages, ticket comments, forum posts...) the format of the output
** Figure out what the artifact ID is and jump to it.
** page depends on the type of artifact that NAME matches.
*/
void info_page(void){
  const char *zName;
  Blob uuid;
  int rid;
  int rc;
  int nLen;
  

  zName = P("name");
  if( zName==0 ) fossil_redirect_home();
  cgi_check_for_malice();
  nLen = strlen(zName);
  blob_set(&uuid, zName);
  if( name_collisions(zName) ){
    cgi_set_parameter("src","info");
    ambiguous_page();
    return;
  }
  rc = name_to_uuid(&uuid, -1, "*");
  if( rc==1 ){
  if( validate16(zName, strlen(zName))
   && db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'", zName) ){
    tktview_page();
    return;
  }
  blob_set(&uuid, zName);
  if( name_to_uuid(&uuid, 1) ){
    fossil_redirect_home();
    if( validate16(zName, nLen) ){
      if( db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'", zName) ){
        cgi_set_parameter_nocopy("tl","1",0);
        tktview_page();
        return;
      }
      if( db_exists("SELECT 1 FROM tag"
                    " WHERE tagname GLOB 'event-%q*'", zName) ){
        event_page();
        return;
      }
    }
    style_header("No Such Object");
    @ <p>No such object: %h(zName)</p>
    if( nLen<4 ){
      @ <p>Object name should be no less than 4 characters.  Ten or more
      @ characters are recommended.</p>
    }
    style_finish_page();
    return;
  }else if( rc==2 ){
    cgi_set_parameter("src","info");
    ambiguous_page();
    return;
  }
  zName = blob_str(&uuid);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid='%s'", zName);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", zName);
  if( rid==0 ){
    style_header("Broken Link");
    @ <p>No such object: %h(zName)</p>
    style_footer();
    style_finish_page();
    return;
  }
  if( db_exists("SELECT 1 FROM mlink WHERE mid=%d", rid) ){
    ci_page();
  }else
  if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)"
                " WHERE rid=%d AND tagname LIKE 'wiki-%%'", rid) ){
    winfo_page();
  }else
  if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)"
                " WHERE rid=%d AND tagname LIKE 'tkt-%%'", rid) ){
    tinfo_page();
  }else
  if( db_table_exists("repository","forumpost")
   && db_exists("SELECT 1 FROM forumpost WHERE fpid=%d", rid)
  ){
    forumthread_page();
  }else
  if( db_exists("SELECT 1 FROM plink WHERE cid=%d", rid) ){
    ci_page();
  }else
  if( db_exists("SELECT 1 FROM plink WHERE pid=%d", rid) ){
    ci_page();
  }else
  if( db_exists("SELECT 1 FROM attachment WHERE attachid=%d", rid) ){
    ainfo_page();
  }else
  {
    artifact_page();
  }
}

/*
** Do a comment comparison.
**
** +  Leading and trailing whitespace are ignored.
** +  \r\n characters compare equal to \n
**
** Return true if equal and false if not equal.
*/
static int comment_compare(const char *zA, const char *zB){
  if( zA==0 ) zA = "";
  if( zB==0 ) zB = "";
  while( fossil_isspace(zA[0]) ) zA++;
  while( fossil_isspace(zB[0]) ) zB++;
  while( zA[0] && zB[0] ){
    if( zA[0]==zB[0] ){ zA++; zB++; continue; }
    if( zA[0]=='\r' && zA[1]=='\n' && zB[0]=='\n' ){
      zA += 2;
      zB++;
      continue;
    }
    if( zB[0]=='\r' && zB[1]=='\n' && zA[0]=='\n' ){
      zB += 2;
      zA++;
      continue;
    }
    return 0;
  }
  while( fossil_isspace(zB[0]) ) zB++;
  while( fossil_isspace(zA[0]) ) zA++;
  return zA[0]==0 && zB[0]==0;
}

/*
** The following methods operate on the newtags temporary table
** that is used to collect various changes to be added to a control
** artifact for a check-in edit.
*/
static void init_newtags(void){
  db_multi_exec("CREATE TEMP TABLE newtags(tag UNIQUE, prefix, value)");
}

static void change_special(
  const char *zName,    /* Name of the special tag */
  const char *zOp,      /* Operation prefix (e.g. +,-,*) */
  const char *zValue    /* Value of the tag */
){
  db_multi_exec("REPLACE INTO newtags VALUES(%Q,'%q',%Q)", zName, zOp, zValue);
}

static void change_sym_tag(const char *zTag, const char *zOp){
  db_multi_exec("REPLACE INTO newtags VALUES('sym-%q',%Q,NULL)", zTag, zOp);
}

static void cancel_special(const char *zTag){
  change_special(zTag,"-",0);
}

static void add_color(const char *zNewColor, int fPropagateColor){
  change_special("bgcolor",fPropagateColor ? "*" : "+", zNewColor);
}

static void cancel_color(void){
  change_special("bgcolor","-",0);
}

static void add_comment(const char *zNewComment){
  change_special("comment","+",zNewComment);
}

static void add_date(const char *zNewDate){
  change_special("date","+",zNewDate);
}

static void add_user(const char *zNewUser){
  change_special("user","+",zNewUser);
}

static void add_tag(const char *zNewTag){
  change_sym_tag(zNewTag,"+");
}

static void cancel_tag(int rid, const char *zCancelTag){
  if( db_exists("SELECT 1 FROM tagxref, tag"
                " WHERE tagxref.rid=%d AND tagtype>0"
                "   AND tagxref.tagid=tag.tagid AND tagname='sym-%q'",
                rid, zCancelTag)
  ) change_sym_tag(zCancelTag,"-");
}

static void hide_branch(void){
  change_special("hidden","*",0);
}

static void close_leaf(int rid){
  change_special("closed",is_a_leaf(rid)?"+":"*",0);
}

static void change_branch(int rid, const char *zNewBranch){
  db_multi_exec(
    "REPLACE INTO newtags "
    " SELECT tagname, '-', NULL FROM tagxref, tag"
    "  WHERE tagxref.rid=%d AND tagtype==2"
    "    AND tagname GLOB 'sym-*'"
    "    AND tag.tagid=tagxref.tagid",
    rid
  );
  change_special("branch","*",zNewBranch);
  change_sym_tag(zNewBranch,"*");
}

/*
** The apply_newtags method is called after all newtags have been added
** and the control artifact is completed and then written to the DB.
*/
static void apply_newtags(
  Blob *ctrl,
  int rid,
  const char *zUuid,
  const char *zUserOvrd,  /* The user name on the control artifact */
  int fDryRun             /* Print control artifact, but make no changes */
){
  Stmt q;
  int nChng = 0;

  db_prepare(&q, "SELECT tag, prefix, value FROM newtags"
                 " ORDER BY prefix || tag");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTag = db_column_text(&q, 0);
    const char *zPrefix = db_column_text(&q, 1);
    const char *zValue = db_column_text(&q, 2);
    nChng++;
    if( zValue ){
      blob_appendf(ctrl, "T %s%F %s %F\n", zPrefix, zTag, zUuid, zValue);
    }else{
      blob_appendf(ctrl, "T %s%F %s\n", zPrefix, zTag, zUuid);
    }
  }
  db_finalize(&q);
  if( nChng>0 ){
    int nrid;
    Blob cksum;
    if( zUserOvrd && zUserOvrd[0] ){
      blob_appendf(ctrl, "U %F\n", zUserOvrd);
    }else{
      blob_appendf(ctrl, "U %F\n", login_name());
    }
    md5sum_blob(ctrl, &cksum);
    blob_appendf(ctrl, "Z %b\n", &cksum);
    if( fDryRun ){
      assert( g.isHTTP==0 ); /* Only print control artifact in console mode. */
      fossil_print("%s", blob_str(ctrl));
      blob_reset(ctrl);
    }else{
      db_begin_transaction();
      g.markPrivate = content_is_private(rid);
      nrid = content_put(ctrl);
      manifest_crosslink(nrid, ctrl, MC_PERMIT_HOOKS);
      db_end_transaction(0);
    }
    assert( blob_is_reset(ctrl) );
  }
}

/*
** This method checks that the date can be parsed.
** Returns 1 if datetime() can validate, 0 otherwise.
*/
int is_datetime(const char* zDate){
  return db_int(0, "SELECT datetime(%Q) NOT NULL", zDate);
}

/*
** WEBPAGE: ci_edit
** URL:  ci_edit?r=RID&c=NEWCOMMENT&u=NEWUSER
**
** Edit a check-in.  (Check-ins are immutable and do not really change.
** This page really creates supplemental tags that affect the display
** Present a dialog for updating properties of a baseline:
** of the check-in.)
**
** Query parameters:
**
**     *  The check-in user
**     *  The check-in comment
**     *  The background color.
**     rid=INTEGER        Record ID of the check-in to edit (REQUIRED)
**
** POST parameters after pressing "Preview", "Cancel", or "Apply":
**
**     c=TEXT             New check-in comment
**     u=TEXT             New user name
**     newclr             Apply a background color
**     clr=TEXT           New background color (only if newclr)
**     pclr               Propagate new background color (only if newclr)
**     dt=TEXT            New check-in date/time (ISO8610 format)
**     newtag             Add a new tag to the check-in
**     tagname=TEXT       Name of the new tag to be added (only if newtag)
**     newbr              Put the check-in on a new branch
**     brname=TEXT        Name of the new branch (only if newbr)
**     close              Close this check-in
**     hide               Hide this check-in
**     cNNN               Cancel tag with tagid=NNN
**
**     cancel             Cancel the edit.  Return to the check-in view
**     preview            Show a preview of the edited check-in comment
**     apply              Apply changes
*/
void ci_edit_page(void){
  int rid;
  const char *zComment;         /* Current comment on the check-in */
  const char *zNewComment;      /* Revised check-in comment */
  const char *zUser;            /* Current user for the check-in */
  const char *zNewUser;         /* Revised user */
  const char *zDate;            /* Current date of the check-in */
  const char *zNewDate;         /* Revised check-in date */
  const char *zNewColorFlag;    /* "checked" if "Change color" is checked */
  const char *zColor;       
  const char *zNewColor;
  const char *zNewTagFlag;
  const char *zNewTag;
  const char *zNewBrFlag;
  const char *zNewBranch;
  const char *zCloseFlag;
  int fPropagateColor;
  const char *zColor;           /* Current background color */
  const char *zNewColor;        /* Revised background color */
  const char *zNewTagFlag;      /* "checked" if "Add tag" is checked */
  const char *zNewTag;          /* Name of the new tag */
  const char *zNewBrFlag;       /* "checked" if "New branch" is checked */
  const char *zNewBranch;       /* Name of the new branch */
  const char *zCloseFlag;       /* "checked" if "Close" is checked */
  const char *zHideFlag;        /* "checked" if "Hide" is checked */
  int fPropagateColor;          /* True if color propagates before edit */
  int fNewPropagateColor;       /* True if color propagates after edit */
  int fHasHidden = 0;           /* True if hidden tag already set */
  int fHasClosed = 0;           /* True if closed tag already set */
  const char *zChngTime = 0;    /* Value of chngtime= query param, if any */
  char *zUuid;
  Blob comment;
  char *zBranchName = 0;
  Stmt q;
  static const struct SampleColors {
     const char *zCName;
     const char *zColor;
  } aColor[] = {
     { "(none)",  "" },
     { "#f2dcdc", "#f2dcdc" },
     { "#f0ffc0", "#f0ffc0" },
     { "#bde5d6", "#bde5d6" },
     { "#c0ffc0", "#c0ffc0" },
     { "#c0fff0", "#c0fff0" },
     { "#c0f0ff", "#c0f0ff" },
     { "#d0c0ff", "#d0c0ff" },
     { "#ffc0ff", "#ffc0ff" },
     { "#ffc0d0", "#ffc0d0" },
     { "#fff0c0", "#fff0c0" },
     { "#c0c0c0", "#c0c0c0" },
  };
  int nColor = sizeof(aColor)/sizeof(aColor[0]);
  int i;
  

  login_check_credentials();
  if( !g.okWrite ){ login_needed(); return; }
  rid = name_to_rid(P("r"));
  if( !g.perm.Write ){ login_needed(g.anon.Write); return; }
  rid = name_to_typed_rid(P("r"), "ci");
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  zComment = db_text(0, "SELECT coalesce(ecomment,comment)"
                        "  FROM event WHERE objid=%d", rid);
  if( zComment==0 ) fossil_redirect_home();
  if( P("cancel") ){
    cgi_redirectf("ci?name=%s", zUuid);
    cgi_redirectf("%R/ci/%S", zUuid);
  }
  if( g.perm.Setup ) zChngTime = P("chngtime");
  zNewComment = PD("c",zComment);
  zUser = db_text(0, "SELECT coalesce(euser,user)"
                     "  FROM event WHERE objid=%d", rid);
  if( zUser==0 ) fossil_redirect_home();
  zNewUser = PD("u",zUser);
  zNewUser = PDT("u",zUser);
  zDate = db_text(0, "SELECT datetime(mtime)"
                     "  FROM event WHERE objid=%d", rid);
  if( zDate==0 ) fossil_redirect_home();
  zNewDate = PD("dt",zDate);
  zNewDate = PDT("dt",zDate);
  zColor = db_text("", "SELECT bgcolor"
                        "  FROM event WHERE objid=%d", rid);
  zNewColor = PD("clr",zColor);
  fPropagateColor = P("pclr")!=0;
  zNewColor = PDT("clr",zColor);
  fPropagateColor = db_int(0, "SELECT tagtype FROM tagxref"
                              " WHERE rid=%d AND tagid=%d",
                              rid, TAG_BGCOLOR)==2;
  fNewPropagateColor = P("clr")!=0 ? P("pclr")!=0 : fPropagateColor;
  zNewColorFlag = P("newclr") ? " checked" : "";
  zNewTagFlag = P("newtag") ? " checked" : "";
  zNewTag = PD("tagname","");
  zNewTag = PDT("tagname","");
  zNewBrFlag = P("newbr") ? " checked" : "";
  zNewBranch = PD("brname","");
  zNewBranch = PDT("brname","");
  zCloseFlag = P("close") ? " checked" : "";
  zHideFlag = P("hide") ? " checked" : "";
  if( P("apply") ){
  if( P("apply") && cgi_csrf_safe(2) ){
    Blob ctrl;
    char *zDate;
    char *zNow;
    int nChng = 0;

    login_verify_csrf_secret();
    blob_zero(&ctrl);
    zDate = db_text(0, "SELECT datetime('now')");
    zNow = date_in_standard_format(zChngTime ? zChngTime : "now");
    zDate[10] = 'T';
    blob_appendf(&ctrl, "D %s\n", zDate);
    db_multi_exec("CREATE TEMP TABLE newtags(tag UNIQUE, prefix, value)");
    if( zNewColor[0] && strcmp(zColor,zNewColor)!=0 ){
    blob_appendf(&ctrl, "D %s\n", zNow);
    init_newtags();
    if( zNewColorFlag[0]
      char *zPrefix = "+";
      if( fPropagateColor ){
     && zNewColor[0]
     && (fPropagateColor!=fNewPropagateColor
        zPrefix = "*";
      }
      db_multi_exec("REPLACE INTO newtags VALUES('bgcolor',%Q,%Q)",
                    zPrefix, zNewColor);
             || fossil_strcmp(zColor,zNewColor)!=0)
    }
    if( zNewColor[0]==0 && zColor[0]!=0 ){
    ){
      add_color(zNewColor,fNewPropagateColor);
      db_multi_exec("REPLACE INTO newtags VALUES('bgcolor','-',NULL)");
    }
    if( strcmp(zComment,zNewComment)!=0 ){
    if( comment_compare(zComment,zNewComment)==0 ) add_comment(zNewComment);
      db_multi_exec("REPLACE INTO newtags VALUES('comment','+',%Q)",
                    zNewComment);
    }
    if( strcmp(zDate,zNewDate)!=0 ){
    if( fossil_strcmp(zDate,zNewDate)!=0 ) add_date(zNewDate);
      db_multi_exec("REPLACE INTO newtags VALUES('date','+',%Q)",
                    zNewDate);
    }
    if( strcmp(zUser,zNewUser)!=0 ){
    if( fossil_strcmp(zUser,zNewUser)!=0 ) add_user(zNewUser);
      db_multi_exec("REPLACE INTO newtags VALUES('user','+',%Q)", zNewUser);
    }
    db_prepare(&q,
       "SELECT tag.tagid, tagname FROM tagxref, tag"
       " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid",
       rid
    );
    while( db_step(&q)==SQLITE_ROW ){
      int tagid = db_column_int(&q, 0);
      const char *zTag = db_column_text(&q, 1);
      char zLabel[30];
      sprintf(zLabel, "c%d", tagid);
      if( P(zLabel) ){
      sqlite3_snprintf(sizeof(zLabel), zLabel, "c%d", tagid);
      if( P(zLabel) ) cancel_special(zTag);
        db_multi_exec("REPLACE INTO newtags VALUES(%Q,'-',NULL)", zTag);
      }
    }
    }
    db_finalize(&q);
    if( zHideFlag[0] ) hide_branch();
    if( zCloseFlag[0] ){
    if( zCloseFlag[0] ) close_leaf(rid);
      db_multi_exec("REPLACE INTO newtags VALUES('closed','+',NULL)");
    }
    if( zNewTagFlag[0] ){
    if( zNewTagFlag[0] && zNewTag[0] ) add_tag(zNewTag);
      db_multi_exec("REPLACE INTO newtags VALUES('sym-%q','+',NULL)", zNewTag);
    }
    if( zNewBrFlag[0] ){
    if( zNewBrFlag[0] && zNewBranch[0] ) change_branch(rid,zNewBranch);
      db_multi_exec(
        "REPLACE INTO newtags "
        " SELECT tagname, '-', NULL FROM tagxref, tag"
        "  WHERE tagxref.rid=%d AND tagtype==2"
        "    AND tagname GLOB 'sym-*'"
        "    AND tag.tagid=tagxref.tagid",
        rid
      );
      db_multi_exec("REPLACE INTO newtags VALUES('branch','*',%Q)", zNewBranch);
      db_multi_exec("REPLACE INTO newtags VALUES('sym-%q','*',NULL)",
                    zNewBranch);
    }
    db_prepare(&q, "SELECT tag, prefix, value FROM newtags"
                   " ORDER BY prefix || tag");
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTag = db_column_text(&q, 0);
      const char *zPrefix = db_column_text(&q, 1);
      const char *zValue = db_column_text(&q, 2);
      nChng++;
      if( zValue ){
        blob_appendf(&ctrl, "T %s%F %s %F\n", zPrefix, zTag, zUuid, zValue);
      }else{
        blob_appendf(&ctrl, "T %s%F %s\n", zPrefix, zTag, zUuid);
      }
    }
    db_finalize(&q);
    if( nChng>0 ){
      int nrid;
      Blob cksum;
      blob_appendf(&ctrl, "U %F\n", g.zLogin);
      md5sum_blob(&ctrl, &cksum);
    apply_newtags(&ctrl, rid, zUuid, 0, 0);
      blob_appendf(&ctrl, "Z %b\n", &cksum);
      db_begin_transaction();
      g.markPrivate = content_is_private(rid);
      nrid = content_put(&ctrl, 0, 0);
      manifest_crosslink(nrid, &ctrl);
      db_end_transaction(0);
    }
    cgi_redirectf("ci?name=%s", zUuid);
    cgi_redirectf("%R/ci/%S", zUuid);
  }
  blob_zero(&comment);
  blob_append(&comment, zNewComment, -1);
  zUuid[10] = 0;
  style_header("Edit Check-in [%s]", zUuid);
  if( P("preview") ){
    Blob suffix;
    int nTag = 0;
    @ <b>Preview:</b>
    @ <blockquote>
    @ <table border=0>
    if( zNewColorFlag[0] && zNewColor && zNewColor[0] ){
      @ <tr><td style="background-color: %h(zNewColor);">
    if( zNewColor && zNewColor[0] ){
      @ <tr><td bgcolor="%h(zNewColor)">
    }else if( zColor[0] ){
      @ <tr><td style="background-color: %h(zColor);">
    }else{
      @ <tr><td>
    }
    wiki_convert(&comment, 0, WIKI_INLINE);
    @ %!W(blob_str(&comment))
    blob_zero(&suffix);
    blob_appendf(&suffix, "(user: %h", zNewUser);
    db_prepare(&q, "SELECT substr(tagname,5) FROM tagxref, tag"
                   " WHERE tagname GLOB 'sym-*' AND tagxref.rid=%d"
                   "   AND tagtype>1 AND tag.tagid=tagxref.tagid",
                   rid);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTag = db_column_text(&q, 0);
      if( nTag==0 ){
        blob_appendf(&suffix, ", tags: %h", zTag);
      }else{
        blob_appendf(&suffix, ", %h", zTag);
      }
      nTag++;
    }
    db_finalize(&q);
    blob_appendf(&suffix, ")");
    @ %s(blob_str(&suffix))
    @ </td></tr></table>
    if( zChngTime ){
      @ <p>The timestamp on the tag used to make the changes above
      @ will be overridden as: %s(date_in_standard_format(zChngTime))</p>
    }
    @ </blockquote>
    @ <hr>
    blob_reset(&suffix);
  }
  @ <p>Make changes to attributes of check-in
  @ [<a href="ci?name=%s(zUuid)">%s(zUuid)</a>]:</p>
  @ <form action="%s(g.zBaseURL)/ci_edit" method="POST">
  @ [%z(href("%R/ci/%!S",zUuid))%s(zUuid)</a>]:</p>
  form_begin(0, "%R/ci_edit");
  login_insert_csrf_secret();
  @ <input type="hidden" name="r" value="%d(rid)">
  @ <div><input type="hidden" name="r" value="%s(zUuid)">
  @ <table border="0" cellspacing="10">

  @ <tr><td align="right" valign="top"><b>User:</b></td>
  @ <tr><th align="right" valign="top">User:</th>
  @ <td valign="top">
  @   <input type="text" name="u" size="20" value="%h(zNewUser)">
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Comment:</b></td>
  @ <tr><th align="right" valign="top">Comment:</th>
  @ <td valign="top">
  @ <textarea name="c" rows="10" cols="80">%h(zNewComment)</textarea>
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Check-in Time:</b></td>
  @ <tr><th align="right" valign="top">Check-in Time:</th>
  @ <td valign="top">
  @   <input type="text" name="dt" size="20" value="%h(zNewDate)">
  @ </td></tr>

  if( zChngTime ){
  @ <tr><td align="right" valign="top"><b>Background Color:</b></td>
  @ <td valign="top">
  @ <table border=0 cellpadding=0 cellspacing=1>
  @ <tr><td colspan="6" align="left">
  if( fPropagateColor ){
    @ <input type="checkbox" name="pclr" checked>
    @ <tr><th align="right" valign="top">Timestamp of this change:</th>
    @ <td valign="top">
    @   <input type="text" name="chngtime" size="20" value="%h(zChngTime)">
    @ </td></tr>
  }

  @ <tr><th align="right" valign="top">Background&nbsp;Color:</th>
  @ <td valign="top">
  @ <div><label><input type='checkbox' name='newclr'%s(zNewColorFlag)>
  @ Change background color: \
  @ <input type='color' name='clr'\
  @ value='%s(zNewColor[0]?zNewColor:"#808080")'></label></div>
  @ <div><label>
  if( fNewPropagateColor ){
    @ <input type="checkbox" name="pclr" checked="checked">
  }else{
    @ <input type="checkbox" name="pclr">
  }
  @ Propagate color to descendants</input></td></tr>
  @ Propagate color to descendants</label></div>
  @ <tr>
  for(i=0; i<nColor; i++){
    if( aColor[i].zColor[0] ){
      @ <td bgcolor="%h(aColor[i].zColor)">
  @ <div class='font-size-80'>Be aware that fixed background
  @ colors will not interact well with all available skins.
    }else{
      @ <td>
    }
    if( strcmp(zNewColor, aColor[i].zColor)==0 ){
      @ <input type="radio" name="clr" value="%h(aColor[i].zColor)" checked>
    }else{
      @ <input type="radio" name="clr" value="%h(aColor[i].zColor)">
    }
    @ %h(aColor[i].zCName)</input></td>
    if( (i%6)==5 && i+1<nColor ){
  @ It is recommended that Fossil be allowed to select these
  @ colors automatically so that it can take the skin's
      @ </tr><tr>
    }
  }
  @ </tr>
  @ preferences into account.</div>
  @ </table>
  @ </td></tr>

  @ <tr><td align="right" valign="top"><b>Tags:</b></td>
  @ <tr><th align="right" valign="top">Tags:</th>
  @ <td valign="top">
  @ <input type="checkbox" name="newtag"%s(zNewTagFlag)>
  @ Add the following new tag name to this check-in:
  @ <input type="text" width="15" name="tagname" value="%h(zNewTag)">
  @ <label><input type="checkbox" id="newtag" name="newtag"%s(zNewTagFlag)>
  @ Add the following new tag name to this check-in:</label>
  @ <input size="15" name="tagname" id="tagname" value="%h(zNewTag)">
  zBranchName = db_text(0, "SELECT value FROM tagxref, tag"
     " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid"
     " AND tagxref.tagid=%d", rid, TAG_BRANCH);
  db_prepare(&q,
     "SELECT tag.tagid, tagname FROM tagxref, tag"
     "SELECT tag.tagid, tagname, tagxref.value FROM tagxref, tag"
     " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid"
     " ORDER BY CASE WHEN tagname GLOB 'sym-*' THEN substr(tagname,5)"
     "               ELSE tagname END",
     "               ELSE tagname END /*sort*/",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int tagid = db_column_int(&q, 0);
    const char *zTagName = db_column_text(&q, 1);
    int isSpecialTag = fossil_strncmp(zTagName, "sym-", 4)!=0;
    char zLabel[30];
    sprintf(zLabel, "c%d", tagid);

    if( tagid == TAG_CLOSED ){
      fHasClosed = 1;
    }else if( (tagid == TAG_COMMENT) || (tagid == TAG_BRANCH) ){
      continue;
    }else if( tagid==TAG_HIDDEN ){
      fHasHidden = 1;
    }else if( !isSpecialTag && zTagName &&
        fossil_strcmp(&zTagName[4], zBranchName)==0){
      continue;
    }
    sqlite3_snprintf(sizeof(zLabel), zLabel, "c%d", tagid);
    @ <br><label>
    if( P(zLabel) ){
      @ <br><input type="checkbox" name="c%d(tagid)" checked>
      @ <input type="checkbox" name="c%d(tagid)" checked="checked">
    }else{
      @ <br><input type="checkbox" name="c%d(tagid)">
      @ <input type="checkbox" name="c%d(tagid)">
    }
    if( strncmp(zTagName, "sym-", 4)==0 ){
      @ Cancel tag <b>%h(&zTagName[4])</b>
    if( isSpecialTag ){
      @ Cancel special tag <b>%h(zTagName)</b></label>
    }else{
      @ Cancel special tag <b>%h(zTagName)</b>
      @ Cancel tag <b>%h(&zTagName[4])</b></label>
    }
  }
  db_finalize(&q);
  @ </td></tr>

  if( !zBranchName ){
    zBranchName = db_get("main-branch", 0);
  }
  if( !zNewBranch || !zNewBranch[0]){
    zNewBranch = zBranchName;
  }
  @ <tr><td align="right" valign="top"><b>Branching:</b></td>
  @ <tr><th align="right" valign="top">Branching:</th>
  @ <td valign="top">
  @ <input type="checkbox" name="newbr"%s(zNewBrFlag)>
  @ Make this check-in the start of a new branch named:
  @ <input type="text" width="15" name="brname" value="%h(zNewBranch)">
  @ </td></tr>

  if( is_a_leaf(rid)
  @ <label><input id="newbr" type="checkbox" name="newbr" \
  @ data-branch='%h(zBranchName)'%s(zNewBrFlag)>
  @ Starting from this check-in, rename the branch to:</label>
  @ <input id="brname" type="text" style="width:15;" name="brname" \
  @ value="%h(zNewBranch)"></td></tr>
  if( !fHasHidden ){
    @ <tr><th align="right" valign="top">Branch Hiding:</th>
    @ <td valign="top">
    @ <label><input type="checkbox" id="hidebr" name="hide"%s(zHideFlag)>
    @ Hide branch
    @ <span style="font-weight:bold" id="hbranch">%h(zBranchName)</span>
    @ from the timeline starting from this check-in</label>
    @ </td></tr>
  }
  if( !fHasClosed ){
    if( is_a_leaf(rid) ){
   && !db_exists("SELECT 1 FROM tagxref "
                 " WHERE tagid=%d AND rid=%d AND tagtype>0",
                 TAG_CLOSED, rid)
  ){
    @ <tr><td align="right" valign="top"><b>Leaf Closure:</b></td>
    @ <td valign="top">
    @ <input type="checkbox" name="close"%s(zCloseFlag)>
    @ Mark this leaf as "closed" so that it no longer appears on the
    @ "leaves" page and is no longer labeled as a "<b>Leaf</b>".
    @ </td></tr>
  }

      @ <tr><th align="right" valign="top">Leaf Closure:</th>
      @ <td valign="top">
      @ <label><input type="checkbox" name="close"%s(zCloseFlag)>
      @ Mark this leaf as "closed" so that it no longer appears on the
      @ "leaves" page and is no longer labeled as a "<b>Leaf</b>"</label>
      @ </td></tr>
    }else if( zBranchName ){
      @ <tr><th align="right" valign="top">Branch Closure:</th>
      @ <td valign="top">
      @ <label><input type="checkbox" name="close"%s(zCloseFlag)>
      @ Mark branch
      @ <span style="font-weight:bold" id="cbranch">%h(zBranchName)</span>
      @ as "closed".</label>
      @ </td></tr>
    }
  }
  if( zBranchName ) fossil_free(zBranchName);


  @ <tr><td colspan="2">
  @ <input type="submit" name="preview" value="Preview">
  @ <input type="submit" name="apply" value="Apply Changes">
  @ <input type="submit" name="cancel" value="Cancel">
  @ <input type="submit" name="cancel" value="Cancel">
  @ <input type="submit" name="preview" value="Preview">
  if( P("preview") ){
    @ <input type="submit" name="apply" value="Apply Changes">
  }
  @ </td></tr>
  @ </table>
  @ </form>
  style_footer();
  @ </div></form>
  builtin_request_js("ci_edit.js");
  style_finish_page();
}

/*
** Prepare an ammended commit comment.  Let the user modify it using the
** editor specified in the global_config table or either
** the VISUAL or EDITOR environment variable.
**
** Store the final commit comment in pComment.  pComment is assumed
** to be uninitialized - any prior content is overwritten.
**
** Use zInit to initialize the check-in comment so that the user does
** not have to retype.
*/
static void prepare_amend_comment(
  Blob *pComment,
  const char *zInit,
  const char *zUuid
){
  Blob prompt;
#if defined(_WIN32) || defined(__CYGWIN__)
  int bomSize;
  const unsigned char *bom = get_utf8_bom(&bomSize);
  blob_init(&prompt, (const char *) bom, bomSize);
  if( zInit && zInit[0]){
    blob_append(&prompt, zInit, -1);
  }
#else
  blob_init(&prompt, zInit, -1);
#endif
  blob_append(&prompt, "\n# Enter a new comment for check-in ", -1);
  if( zUuid && zUuid[0] ){
    blob_append(&prompt, zUuid, -1);
  }
  blob_append(&prompt, ".\n# Lines beginning with a # are ignored.\n", -1);
  prompt_for_user_comment(pComment, &prompt);
  blob_reset(&prompt);
}

#define AMEND_USAGE_STMT "HASH OPTION ?OPTION ...?"
/*
** COMMAND: amend
**
** Usage: %fossil amend HASH OPTION ?OPTION ...?
**
** Amend the tags on check-in HASH to change how it displays in the timeline.
**
** Options:
**    --author USER           Make USER the author for check-in
**    -m|--comment COMMENT    Make COMMENT the check-in comment
**    -M|--message-file FILE  Read the amended comment from FILE
**    -e|--edit-comment       Launch editor to revise comment
**    --date DATETIME         Make DATETIME the check-in time
**    --bgcolor COLOR         Apply COLOR to this check-in
**    --branchcolor COLOR     Apply and propagate COLOR to the branch
**    --tag TAG               Add new TAG to this check-in
**    --cancel TAG            Cancel TAG from this check-in
**    --branch NAME           Rename branch of check-in to NAME
**    --hide                  Hide branch starting from this check-in
**    --close                 Mark this "leaf" as closed
**    -n|--dry-run            Print control artifact, but make no changes
**    --date-override DATETIME  Set the change time on the control artifact
**    --user-override USER      Set the user name on the control artifact
**
** DATETIME may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
** year-month-day form, it may be truncated, the "T" may be replaced by
** a space, and it may also name a timezone offset from UTC as "-HH:MM"
** (westward) or "+HH:MM" (eastward). Either no timezone suffix or "Z"
** means UTC.
*/
void ci_amend_cmd(void){
  int rid;
  const char *zComment;         /* Current comment on the check-in */
  const char *zNewComment;      /* Revised check-in comment */
  const char *zComFile;         /* Filename from which to read comment */
  const char *zUser;            /* Current user for the check-in */
  const char *zNewUser;         /* Revised user */
  const char *zDate;            /* Current date of the check-in */
  const char *zNewDate;         /* Revised check-in date */
  const char *zColor;
  const char *zNewColor;
  const char *zNewBrColor;
  const char *zNewBranch;
  const char **pzNewTags = 0;
  const char **pzCancelTags = 0;
  int fClose;                   /* True if leaf should be closed */
  int fHide;                    /* True if branch should be hidden */
  int fPropagateColor;          /* True if color propagates before amend */
  int fNewPropagateColor = 0;   /* True if color propagates after amend */
  int fHasHidden = 0;           /* True if hidden tag already set */
  int fHasClosed = 0;           /* True if closed tag already set */
  int fEditComment;             /* True if editor to be used for comment */
  int fDryRun;                  /* Print control artifact, make no changes */
  const char *zChngTime;        /* The change time on the control artifact */
  const char *zUserOvrd;        /* The user name on the control artifact */
  const char *zUuid;
  Blob ctrl;
  Blob comment;
  char *zNow;
  int nTags, nCancels;
  int i;
  Stmt q;

  fEditComment = find_option("edit-comment","e",0)!=0;
  zNewComment = find_option("comment","m",1);
  zComFile = find_option("message-file","M",1);
  zNewBranch = find_option("branch",0,1);
  zNewColor = find_option("bgcolor",0,1);
  zNewBrColor = find_option("branchcolor",0,1);
  if( zNewBrColor ){
    zNewColor = zNewBrColor;
    fNewPropagateColor = 1;
  }
  zNewDate = find_option("date",0,1);
  zNewUser = find_option("author",0,1);
  pzNewTags = find_repeatable_option("tag",0,&nTags);
  pzCancelTags = find_repeatable_option("cancel",0,&nCancels);
  fClose = find_option("close",0,0)!=0;
  fHide = find_option("hide",0,0)!=0;
  fDryRun = find_option("dry-run","n",0)!=0;
  zChngTime = find_option("date-override",0,1);
  if( zChngTime==0 ) zChngTime = find_option("chngtime",0,1);
  zUserOvrd = find_option("user-override",0,1);
  db_find_and_open_repository(0,0);
  user_select();
  verify_all_options();
  if( g.argc<3 || g.argc>=4 ) usage(AMEND_USAGE_STMT);
  rid = name_to_typed_rid(g.argv[2], "ci");
  if( rid==0 && !is_a_version(rid) ) fossil_fatal("no such check-in");
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( zUuid==0 ) fossil_fatal("Unable to find artifact hash");
  zComment = db_text(0, "SELECT coalesce(ecomment,comment)"
                        "  FROM event WHERE objid=%d", rid);
  zUser = db_text(0, "SELECT coalesce(euser,user)"
                     "  FROM event WHERE objid=%d", rid);
  zDate = db_text(0, "SELECT datetime(mtime)"
                     "  FROM event WHERE objid=%d", rid);
  zColor = db_text("", "SELECT bgcolor"
                        "  FROM event WHERE objid=%d", rid);
  fPropagateColor = db_int(0, "SELECT tagtype FROM tagxref"
                              " WHERE rid=%d AND tagid=%d",
                              rid, TAG_BGCOLOR)==2;
  fNewPropagateColor = zNewColor && zNewColor[0]
                        ? fNewPropagateColor : fPropagateColor;
  db_prepare(&q,
     "SELECT tag.tagid FROM tagxref, tag"
     " WHERE tagxref.rid=%d AND tagtype>0 AND tagxref.tagid=tag.tagid",
     rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int tagid = db_column_int(&q, 0);

    if( tagid == TAG_CLOSED ){
      fHasClosed = 1;
    }else if( tagid==TAG_HIDDEN ){
      fHasHidden = 1;
    }else{
      continue;
    }
  }
  db_finalize(&q);
  blob_zero(&ctrl);
  zNow = date_in_standard_format(zChngTime && zChngTime[0] ? zChngTime : "now");
  blob_appendf(&ctrl, "D %s\n", zNow);
  init_newtags();
  if( zNewColor && zNewColor[0]
      && (fPropagateColor!=fNewPropagateColor
            || fossil_strcmp(zColor,zNewColor)!=0)
  ){
    add_color(
      mprintf("%s%s", (zNewColor[0]!='#' &&
        validate16(zNewColor,strlen(zNewColor)) &&
        (strlen(zNewColor)==6 || strlen(zNewColor)==3)) ? "#" : "",
        zNewColor
      ),
      fNewPropagateColor
    );
  }
  if( (zNewColor!=0 && zNewColor[0]==0) && (zColor && zColor[0] ) ){
    cancel_color();
  }
  if( fEditComment ){
    prepare_amend_comment(&comment, zComment, zUuid);
    zNewComment = blob_str(&comment);
  }else if( zComFile ){
    blob_zero(&comment);
    blob_read_from_file(&comment, zComFile, ExtFILE);
    blob_to_utf8_no_bom(&comment, 1);
    zNewComment = blob_str(&comment);
  }
  if( zNewComment && zNewComment[0]
      && comment_compare(zComment,zNewComment)==0 ) add_comment(zNewComment);
  if( zNewDate && zNewDate[0] && fossil_strcmp(zDate,zNewDate)!=0 ){
    if( is_datetime(zNewDate) ){
      add_date(zNewDate);
    }else{
      fossil_fatal("Unsupported date format, use YYYY-MM-DD HH:MM:SS");
    }
  }
  if( zNewUser && zNewUser[0] && fossil_strcmp(zUser,zNewUser)!=0 ){
    add_user(zNewUser);
  }
  if( pzNewTags!=0 ){
    for(i=0; i<nTags; i++){
      if( pzNewTags[i] && pzNewTags[i][0] ) add_tag(pzNewTags[i]);
    }
    fossil_free((void *)pzNewTags);
  }
  if( pzCancelTags!=0 ){
    for(i=0; i<nCancels; i++){
      if( pzCancelTags[i] && pzCancelTags[i][0] )
        cancel_tag(rid,pzCancelTags[i]);
    }
    fossil_free((void *)pzCancelTags);
  }
  if( fHide && !fHasHidden ) hide_branch();
  if( fClose && !fHasClosed ) close_leaf(rid);
  if( zNewBranch && zNewBranch[0] ) change_branch(rid,zNewBranch);
  apply_newtags(&ctrl, rid, zUuid, zUserOvrd, fDryRun);
  if( fDryRun==0 ){
    show_common_info(rid, "hash:", 1, 0);
  }
  if( g.localOpen ){
    manifest_to_disk(rid);
  }
}


/*
** COMMAND: test-symlink-list
**
** Show all symlinks that have been checked into a Fossil repository.
**
** This command does a linear scan through all check-ins and so might take
** several seconds on a large repository.
*/
void test_symlink_list_cmd(void){
  Stmt q;
  db_find_and_open_repository(0,0);
  add_content_sql_commands(g.db);
  db_prepare(&q,
     "SELECT min(date(e.mtime)),"
           " b.uuid,"
           " f.filename,"
           " content(f.uuid)"
     " FROM event AS e, blob AS b, files_of_checkin(b.uuid) AS f"
     " WHERE e.type='ci'"
     "   AND b.rid=e.objid"
     "   AND f.perm LIKE '%%l%%'"
     " GROUP BY 3, 4"
     " ORDER BY 1 DESC"
  );
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("%s %.16s %s -> %s\n",
      db_column_text(&q,0),
      db_column_text(&q,1),
      db_column_text(&q,2),
      db_column_text(&q,3));
  }
  db_finalize(&q);
}

#if INTERFACE
/*
** Description of a check-in relative to an earlier, tagged check-in.
*/
typedef struct CommitDescr {
  char *zRelTagname;        /* Tag name on the relative check-in */
  int nCommitsSince;        /* Number of commits since then */
  char *zCommitHash;        /* Hash of the described check-in */
  int isDirty;              /* Working directory has uncommitted changes */
} CommitDescr;
#endif

/*
** Describe the check-in given by 'zName', and possibly matching 'matchGlob',
** relative to an earlier, tagged check-in. Use 'descr' for the output.
**
** Finds the closest ancestor (ignoring merge-ins) that has a non-propagating
** label tag and the number of steps backwards that we had to search in
** order to find that tag.  Tags applied to more than one check-in are ignored.
**
** Return values:
**       0: ok
**      -1: zName does not resolve to a commit
**      -2: zName resolves to more than a commit
**      -3: no ancestor commit with a fitting non-propagating tag found
*/
int describe_commit(
  const char *zName,       /* Name of the commit to be described */
  const char *matchGlob,   /* Glob pattern for the tag */
  CommitDescr *descr       /* Write the description here */
){
  int rid;             /* rid for zName */
  const char *zUuid;   /* Hash of rid */
  int nRet = 0;        /* Value to be returned */
  Stmt q;              /* Query for tagged ancestors */

  rid = symbolic_name_to_rid(zName, "ci"); /* only commits */

  if( rid<=0 ){
    /* Commit does not exist or is ambiguous */
    descr->zRelTagname = mprintf("");
    descr->nCommitsSince = -1;
    descr->zCommitHash = mprintf("");
    descr->isDirty = -1;
    return (rid-1);
  }

  zUuid = rid_to_uuid(rid);
  descr->zCommitHash = mprintf("%s", zUuid);
  descr->isDirty = unsaved_changes(0);

  db_multi_exec(
    "DROP TABLE IF EXISTS temp.singletonTag;"
    "CREATE TEMP TABLE singletonTag("
    "  rid INT,"
    "  tagname TEXT,"
    "  PRIMARY KEY (rid,tagname)"
    ") WITHOUT ROWID;"
    "INSERT OR IGNORE INTO singletonTag(rid, tagname)"
    "  SELECT min(rid),"
    "         substr(tagname,5)"
    "    FROM tag, tagxref"
    "   WHERE tag.tagid=tagxref.tagid"
    "     AND tagxref.tagtype=1"
    "     AND tagname GLOB 'sym-%q'"
    "   GROUP BY tagname"
    "  HAVING count(*)==1;",
    (matchGlob ? matchGlob : "*")
  );

  db_prepare(&q,
    "WITH RECURSIVE"
    "  ancestor(rid,mtime,tagname,n) AS ("
    "    SELECT %d, event.mtime, singletonTag.tagname, 0 "
    "      FROM event"
    "      LEFT JOIN singletonTag ON singletonTag.rid=event.objid"
    "     WHERE event.objid=%d"
    "     UNION ALL"
    "     SELECT plink.pid, event.mtime, singletonTag.tagname, n+1"
    "       FROM ancestor, plink, event"
    "       LEFT JOIN singletonTag ON singletonTag.rid=plink.pid"
    "      WHERE plink.cid=ancestor.rid"
    "        AND plink.isprim=1"
    "        AND event.objid=plink.pid"
    "        AND ancestor.tagname IS NULL"
    "      ORDER BY mtime DESC"
    "      LIMIT 100000"
    "  )"
    "SELECT tagname, n"
    "  FROM ancestor"
    " WHERE tagname IS NOT NULL"
    " ORDER BY n LIMIT 1;",
    rid, rid
  );

  if( db_step(&q)==SQLITE_ROW ){
    const char *lastTag = db_column_text(&q, 0);
    descr->zRelTagname = mprintf("%s", lastTag);
    descr->nCommitsSince = db_column_int(&q, 1);
    nRet = 0;
  }else{
    /* no ancestor commit with a fitting singleton tag found */
    descr->zRelTagname = mprintf("");
    descr->nCommitsSince = -1;
    nRet = -3;
  }

  db_finalize(&q);
  return nRet;
}

/*
** COMMAND: describe
**
** Usage: %fossil describe ?VERSION? ?OPTIONS?
**
** Provide a description of the given VERSION by showing a non-propagating
** tag of the youngest tagged ancestor, followed by the number of commits
** since that, and the short hash of VERSION.  Only tags applied to a single
** check-in are considered.
**
** If no VERSION is provided, describe the currently checked-out version.
**
** If VERSION and the found ancestor refer to the same commit, the last two
** components are omitted, unless --long is provided.  When no fitting tagged
** ancestor is found, show only the short hash of VERSION.
**
** Options:
**    --digits           Display so many hex digits of the hash
**                       (default: the larger of 6 and the 'hash-digit' setting)
**    -d|--dirty         Show whether there are changes to be committed
**    --long             Always show all three components
**    --match GLOB       Consider only non-propagating tags matching GLOB
*/
void describe_cmd(void){
  const char *zName;
  const char *zMatchGlob;
  const char *zDigits;
  int nDigits;
  int bDirtyFlag = 0;
  int bLongFlag = 0;
  CommitDescr descr;

  db_find_and_open_repository(0,0);
  bDirtyFlag = find_option("dirty","d",0)!=0;
  bLongFlag = find_option("long","",0)!=0;
  zMatchGlob = find_option("match", 0, 1);
  zDigits = find_option("digits", 0, 1);

  if ( !zDigits || ((nDigits=atoi(zDigits))==0) ){
    nDigits = hash_digits(0);
  }

  /* We should be done with options.. */
  verify_all_options();
  if( g.argc<3 ){
    zName = "current";
  }else{
    zName = g.argv[2];
  }

  if( bDirtyFlag ){
    if ( g.argc>=3 ) fossil_fatal("cannot use --dirty with specific check-in");
  }

  switch( describe_commit(zName, zMatchGlob, &descr) ){
    case -1:
      fossil_fatal("commit %s does not exist", zName);
      break;
    case -2:
      fossil_fatal("commit %s is ambiguous", zName);
      break;
    case -3:
      fossil_print("%.*s%s\n", nDigits, descr.zCommitHash,
                  bDirtyFlag ? (descr.isDirty ? "-dirty" : "") : "");
      break;
    case 0:
      if( descr.nCommitsSince==0 && !bLongFlag ){
        fossil_print("%s%s\n", descr.zRelTagname,
                    bDirtyFlag ? (descr.isDirty ? "-dirty" : "") : "");
      }else{
        fossil_print("%s-%d-%.*s%s\n", descr.zRelTagname,
                    descr.nCommitsSince, nDigits, descr.zCommitHash,
                    bDirtyFlag ? (descr.isDirty ? "-dirty" : "") : "");
      }
      break;
    default:
      fossil_fatal("cannot describe commit");
      break;
  }
}
Added src/interwiki.c.






































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains subroutines used for recognizing, configuring, and
** handling interwiki hyperlinks.
*/
#include "config.h"
#include "interwiki.h"


/*
** If zTarget is an interwiki link, return a pointer to a URL for that
** link target in memory obtained from fossil_malloc().  If zTarget is
** not a valid interwiki link, return NULL.
**
** An interwiki link target is of the form:
**
**       Code:PageName
**
** "Code" is a brief code that describes the intended target wiki.
** The code must be ASCII alpha-numeric.  No symbols or non-ascii
** characters are allows.  Case is ignored for the code.
** Codes are assigned by "intermap:*" entries in the CONFIG table.
** The link is only valid if there exists an entry in the CONFIG table
** that matches "intermap:Code".
**
** Each value of each intermap:Code entry in the CONFIG table is a JSON
** object with the following fields:
**
**    {
**      "base":  Base URL for the remote site.
**      "hash":  Append this to "base" for Hash targets.
**      "wiki":  Append this to "base" for Wiki targets.
**    }
**
** If the remote wiki is Fossil, then the correct value for "hash"
** is "/info/" and the correct value for "wiki" is "/wiki?name=".
** If (for example) Wikipedia is the remote, then "hash" should be
** omitted and the correct value for "wiki" is "/wiki/".
**
** PageName is link name of the target wiki.  Several different forms
** of PageName are recognized.
**
**    Path       If PageName is empty or begins with a "/" character, then
**               it is a pathname that is appended to "base".
**
**    Hash       If PageName is a hexadecimal string of 4 or more
**               characters, then PageName is appended to "hash" which
**               is then appended to "base".
**
**    Wiki       If PageName does not start with "/" and it is
**               not a hexadecimal string of 4 or more characters, then
**               PageName is appended to "wiki" and that combination is
**               appended to "base".
**
** See https://en.wikipedia.org/wiki/Interwiki_links for further information
** on interwiki links.
*/
char *interwiki_url(const char *zTarget){
  int nCode;
  int i;
  const char *zPage;
  int nPage;
  char *zUrl = 0;
  char *zName;
  static Stmt q;
  for(i=0; fossil_isalnum(zTarget[i]); i++){}
  if( zTarget[i]!=':' ) return 0;
  nCode = i;
  if( nCode==4 && strncmp(zTarget,"wiki",4)==0 ) return 0;
  zPage = zTarget + nCode + 1;
  nPage = (int)strlen(zPage);
  db_static_prepare(&q,
     "SELECT value->>'base', value->>'hash', value->>'wiki'"
     " FROM config WHERE name=lower($name) AND json_valid(value)"
  );
  zName = mprintf("interwiki:%.*s", nCode, zTarget);
  db_bind_text(&q, "$name", zName);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zBase = db_column_text(&q,0);
    if( zBase==0 || zBase[0]==0 ) break;
    if( nPage==0 || zPage[0]=='/' ){
      /* Path */
      zUrl = mprintf("%s%s", zBase, zPage);
    }else if( nPage>=4 && validate16(zPage,nPage) ){
      /* Hash */
      const char *zHash = db_column_text(&q,1);
      if( zHash && zHash[0] ){
        zUrl = mprintf("%s%s%s", zBase, zHash, zPage);
      }
    }else{
      /* Wiki */
      const char *zWiki = db_column_text(&q,2);
      if( zWiki && zWiki[0] ){
        zUrl = mprintf("%s%s%s", zBase, zWiki, zPage);
      }
    }
    break;
  }
  db_reset(&q);
  free(zName);
  return zUrl;
}

/*
** If hyperlink target zTarget begins with an interwiki tag that ought
** to be excluded from display, then return the number of characters in
** that tag.
**
** Path interwiki targets always return zero.  In other words, links
** of the form:
**
**       remote:/path/to/file.txt
**
** Do not have the interwiki tag removed.  But Hash and Wiki links are
** transformed:
**
**       src:39cb0a323f2f3fb6  ->  39cb0a323f2f3fb6
**       fossil:To Do List     ->  To Do List
*/
int interwiki_removable_prefix(const char *zTarget){
  int i;
  for(i=0; fossil_isalnum(zTarget[i]); i++){}
  if( zTarget[i]!=':' ) return 0;
  i++;
  if( zTarget[i]==0 || zTarget[i]=='/' ) return 0;
  return i;
}

/*
** Verify that a name is a valid interwiki "Code".  Rules:
**
**     *    ascii
**     *    alphanumeric
*/
static int interwiki_valid_name(const char *zName){
  int i;
  for(i=0; zName[i]; i++){
    if( !fossil_isalnum(zName[i]) ) return 0;
  }
  return 1;
}

/*
** COMMAND: interwiki*
**
** Usage: %fossil interwiki COMMAND ...
**
** Manage the "intermap" that defines the mapping from interwiki tags
** to complete URLs for interwiki links.
**
** >  fossil interwiki delete TAG ...
**
**        Delete one or more interwiki maps.
**
** >  fossil interwiki edit TAG --base URL --hash PATH --wiki PATH
**
**        Create an interwiki referenced call TAG.  The base URL is
**        the --base option, which is required.  The --hash and --wiki
**        paths are optional.  The TAG must be lower-case alphanumeric
**        and must be unique.  A new entry is created if it does not
**        already exit.
**
** >  fossil interwiki list
**
**        Show all interwiki mappings.
*/
void interwiki_cmd(void){
  const char *zCmd;
  int nCmd;
  db_find_and_open_repository(0, 0);
  if( g.argc<3 ){
    usage("SUBCOMMAND ...");
  }
  zCmd = g.argv[2];
  nCmd = (int)strlen(zCmd);
  if( strncmp(zCmd,"edit",nCmd)==0 ){
    const char *zName;
    const char *zBase = find_option("base",0,1);
    const char *zHash = find_option("hash",0,1);
    const char *zWiki = find_option("wiki",0,1);
    verify_all_options();
    if( g.argc!=4 ) usage("add TAG ?OPTIONS?");
    zName = g.argv[3];
    if( zBase==0 ){
      fossil_fatal("the --base option is required");
    }
    if( !interwiki_valid_name(zName) ){
      fossil_fatal("not a valid interwiki tag: \"%s\"", zName);
    }
    db_begin_write();
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "REPLACE INTO config(name,value,mtime)"
       " VALUES('interwiki:'||lower(%Q),"
              " json_object('base',%Q,'hash',%Q,'wiki',%Q),"
              " now());",
       zName, zBase, zHash, zWiki
    );
    setup_incr_cfgcnt();
    db_protect_pop();
    db_commit_transaction();
  }else
  if( strncmp(zCmd, "delete", nCmd)==0 ){
    int i;
    verify_all_options();
    if( g.argc<4 ) usage("delete ID ...");
    db_begin_write();
    db_unprotect(PROTECT_CONFIG);
    for(i=3; i<g.argc; i++){
      const char *zName = g.argv[i];
      db_multi_exec(
        "DELETE FROM config WHERE name='interwiki:%q'",
        zName
      );
    }
    setup_incr_cfgcnt();
    db_protect_pop();
    db_commit_transaction();
  }else
  if( strncmp(zCmd, "list", nCmd)==0 ){
    Stmt q;
    int n = 0;
    verify_all_options();
    db_prepare(&q,
      "SELECT substr(name,11),"
      "       value->>'base', value->>'hash', value->>'wiki'"
      "  FROM config WHERE name glob 'interwiki:*' AND json_valid(value)"
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zBase, *z, *zName;
      if( n++ ) fossil_print("\n");
      zName = db_column_text(&q,0);
      zBase = db_column_text(&q,1);
      fossil_print("%-15s %s\n", zName, zBase);
      z = db_column_text(&q,2);
      if( z ){
        fossil_print("%15s %s%s\n", "", zBase, z);
      }
      z = db_column_text(&q,3);
      if( z ){
        fossil_print("%15s %s%s\n", "", zBase, z);
      }
    }
    db_finalize(&q);
  }else
  {
     fossil_fatal("unknown command \"%s\" - should be one of: "
                  "delete edit list", zCmd);
  }
}


/*
** Append text to the "Markdown" or "Wiki" rules pages that shows
** a table of all interwiki tags available on this system.
*/
void interwiki_append_map_table(Blob *out){
  int n = 0;
  Stmt q;
  db_prepare(&q,
    "SELECT substr(name,11), value->>'base'"
    "  FROM config WHERE name glob 'interwiki:*' AND json_valid(value)"
    " ORDER BY name;"
  );
  while( db_step(&q)==SQLITE_ROW ){
    if( n==0 ){
      blob_appendf(out, "<blockquote><table>\n");
    }
    blob_appendf(out,"<tr><td>%h</td><td>&nbsp;&rarr;&nbsp;</td>",
       db_column_text(&q,0));
    blob_appendf(out,"<td>%h</td></tr>\n",
       db_column_text(&q,1));
    n++;
  }
  db_finalize(&q);
  if( n>0 ){
    blob_appendf(out,"</table></blockquote>\n");
  }else{
    blob_appendf(out,"<i>None</i></blockquote>\n");
  }
}

/*
** WEBPAGE: intermap
**
** View and modify the interwiki tag map or "intermap".
** This page is visible to administrators only.
*/
void interwiki_page(void){
  Stmt q;
  int n = 0;
  const char *z;
  const char *zTag = "";
  const char *zBase = "";
  const char *zHash = "";
  const char *zWiki = "";
  char *zErr = 0;

  login_check_credentials();
  if( !g.perm.Read && !g.perm.RdWiki && ~g.perm.RdTkt ){
    login_needed(0);
    return;
  }
  if( g.perm.Setup && P("submit")!=0 && cgi_csrf_safe(2) ){
    zTag = PT("tag");
    zBase = PT("base");
    zHash = PT("hash");
    zWiki = PT("wiki");
    if( zTag==0 || zTag[0]==0 || !interwiki_valid_name(zTag) ){
      zErr = mprintf("Not a valid interwiki tag name: \"%s\"", zTag?zTag : "");
    }else if( zBase==0 || zBase[0]==0 ){
      db_unprotect(PROTECT_CONFIG);
      db_multi_exec("DELETE FROM config WHERE name='interwiki:%q';", zTag);
      db_protect_pop();
    }else{
      if( zHash && zHash[0]==0 ) zHash = 0;
      if( zWiki && zWiki[0]==0 ) zWiki = 0;
      db_unprotect(PROTECT_CONFIG);
      db_multi_exec(
        "REPLACE INTO config(name,value,mtime)"
        "VALUES('interwiki:'||lower(%Q),"
        " json_object('base',%Q,'hash',%Q,'wiki',%Q),"
        " now());",
        zTag, zBase, zHash, zWiki);
      db_protect_pop();
    }
  }

  style_set_current_feature("interwiki");
  style_header("Interwiki Map Configuration");
  @ <p>Interwiki links are hyperlink targets of the form
  @ <blockquote><i>Tag</i><b>:</b><i>PageName</i></blockquote>
  @ <p>Such links resolve to links to <i>PageName</i> on a separate server
  @ identified by <i>Tag</i>.  The Interwiki Map or "intermap" is a mapping
  @ from <i>Tags</i> to complete Server URLs.
  db_prepare(&q,
    "SELECT substr(name,11),"
    "       value->>'base', value->>'hash', value->>'wiki'"
    "  FROM config WHERE name glob 'interwiki:*' AND json_valid(value)"
  );
  while( db_step(&q)==SQLITE_ROW ){
    if( n==0 ){
      @ The current mapping is as follows:
      @ <ol>
    }
    @ <li><p> %h(db_column_text(&q,0))
    @ <ul>
    @ <li> Base-URL: <tt>%h(db_column_text(&q,1))</tt>
    z = db_column_text(&q,2);
    if( z==0 ){
      @ <li> Hash-path: <i>NULL</i>
    }else{
      @ <li> Hash-path: <tt>%h(z)</tt>
    }
    z = db_column_text(&q,3);
    if( z==0 ){
      @ <li> Wiki-path: <i>NULL</i>
    }else{
      @ <li> Wiki-path: <tt>%h(z)</tt>
    }
    @ </ul>
    n++;
  }
  db_finalize(&q);
  if( n ){
    @ </ol>
  }else{
    @ No mappings are currently defined.
  }

  if( !g.perm.Setup ){
    /* Do not show intermap editing fields to non-setup users */
    style_finish_page();
    return;
  }

  @ <p>To add a new mapping, fill out the form below providing a unique name
  @ for the tag.  To edit an exist mapping, fill out the form and use the
  @ existing name as the tag.  To delete an existing mapping, fill in the
  @ tag field but leave the "Base URL" field blank.</p>
  if( zErr ){
    @ <p class="error">%h(zErr)</p>
  }
  @ <form method="POST" action="%R/intermap">
  login_insert_csrf_secret();
  @ <table border="0">
  @ <tr><td class="form_label" id="imtag">Tag:</td>
  @ <td><input type="text" id="tag" aria-labeledby="imtag" name="tag" \
  @ size="15" value="%h(zTag)"></td></tr>
  @ <tr><td class="form_label" id="imbase">Base&nbsp;URL:</td>
  @ <td><input type="text" id="base" aria-labeledby="imbase" name="base" \
  @ size="70" value="%h(zBase)"></td></tr>
  @ <tr><td class="form_label" id="imhash">Hash-path:</td>
  @ <td><input type="text" id="hash" aria-labeledby="imhash" name="hash" \
  @ size="20" value="%h(zHash)">
  @ (use "<tt>/info/</tt>" when the target is Fossil)</td></tr>
  @ <tr><td class="form_label" id="imwiki">Wiki-path:</td>
  @ <td><input type="text" id="wiki" aria-labeledby="imwiki" name="wiki" \
  @ size="20" value="%h(zWiki)">
  @ (use "<tt>/wiki?name=</tt>" when the target is Fossil)</td></tr>
  @ <tr><td></td>
  @ <td><input type="submit" name="submit" value="Apply Changes"></td></tr>
  @ </table>
  @ </form>

  style_finish_page();
}
Added src/json.c.














































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011-2022 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Code for the JSON API.
**
** The JSON API's public interface is documented at:
**
** https://fossil-scm.org/fossil/doc/trunk/www/json-api/index.md
**
** Notes for hackers...
**
** Here's how command/page dispatching works: json_page_top() (in HTTP mode) or
** json_cmd_top() (in CLI mode) catch the "json" path/command. Those functions
** then dispatch to a JSON-mode-specific command/page handler with the type
** fossil_json_f().
** See the API docs for that typedef (below) for the semantics of the callbacks.
**
**
*/
#include "VERSION.h"
#include "config.h"
#include "json.h"
#include <assert.h>
#include <time.h>

#if INTERFACE
#include "json_detail.h" /* workaround for apparent enum limitation
                            in makeheaders */
#endif

const FossilJsonKeys_ FossilJsonKeys = {
  "anonymousSeed" /*anonymousSeed*/,
  "authToken"  /*authToken*/,
  "COMMAND_PATH" /*commandPath*/,
  "mtime" /*mtime*/,
  "payload" /* payload */,
  "requestId" /*requestId*/,
  "resultCode" /*resultCode*/,
  "resultText" /*resultText*/,
  "timestamp" /*timestamp*/
};

/*
** Given the current request path string, this function returns true
** if it refers to a JSON API path. i.e. if (1) it starts with /json
** or (2) g.zCmdName is "server" or "cgi" and the path starts with
** /somereponame/json. Specifically, it returns 1 in the former case
** and 2 for the latter.
*/
int json_request_is_json_api(const char * zPathInfo){
  int rc = 0;
  if(zPathInfo==0){
    rc = 0;
  }else if(0==strncmp("/json",zPathInfo,5)
           && (zPathInfo[5]==0 || zPathInfo[5]=='/')){
    rc = 1;
  }else if(g.zCmdName!=0 && (0==strcmp("server",g.zCmdName)
                             || 0==strcmp("ui",g.zCmdName)
                             || 0==strcmp("cgi",g.zCmdName)
                             || 0==strcmp("http",g.zCmdName)) ){
    /* When running in server/cgi "directory" mode, zPathInfo is
    ** prefixed with the repository's name, so in order to determine
    ** whether or not we're really running in json mode we have to try
    ** a bit harder. Problem reported here:
    ** https://fossil-scm.org/forum/forumpost/e4953666d6
    */
    ReCompiled * pReg = 0;
    const char * zErr = re_compile(&pReg, "^/[^/]+/json(/.*)?", 0);
    assert(zErr==0 && "Regex compilation failed?");
    if(zErr==0 &&
         re_match(pReg, (const unsigned char *)zPathInfo, -1)){
      rc = 2;
    }
    re_free(pReg);
  }
  return rc;
}

/*
** Returns true (non-0) if fossil appears to be running in JSON mode.
** and either has JSON POSTed input awaiting consumption or fossil is
** running in HTTP mode (in which case certain JSON data *might* be
** available via GET parameters).
*/
int fossil_has_json(){
  return g.json.isJsonMode && (g.isHTTP || g.json.post.o);
}

/*
** Placeholder /json/XXX page impl for NYI (Not Yet Implemented)
** (but planned) pages/commands.
*/
cson_value * json_page_nyi(){
  g.json.resultCode = FSL_JSON_E_NYI;
  return NULL;
}

/*
** Given a FossilJsonCodes value, it returns a string suitable for use
** as a resultCode string. Returns some unspecified non-empty string
** if errCode is not one of the FossilJsonCodes values.
*/
static char const * json_err_cstr( int errCode ){
  switch( errCode ){
    case 0: return "Success";
#define C(X,V) case FSL_JSON_E_ ## X: return V

    C(GENERIC,"Generic error");
    C(INVALID_REQUEST,"Invalid request");
    C(UNKNOWN_COMMAND,"Unknown command or subcommand");
    C(UNKNOWN,"Unknown error");
    C(TIMEOUT,"Timeout reached");
    C(ASSERT,"Assertion failed");
    C(ALLOC,"Resource allocation failed");
    C(NYI,"Not yet implemented");
    C(PANIC,"x");
    C(MANIFEST_READ_FAILED,"Reading artifact manifest failed");
    C(FILE_OPEN_FAILED,"Opening file failed");

    C(AUTH,"Authentication error");
    C(MISSING_AUTH,"Authentication info missing from request");
    C(DENIED,"Access denied");
    C(WRONG_MODE,"Request not allowed (wrong operation mode)");
    C(LOGIN_FAILED,"Login failed");
    C(LOGIN_FAILED_NOSEED,"Anonymous login attempt was missing password seed");
    C(LOGIN_FAILED_NONAME,"Login failed - name not supplied");
    C(LOGIN_FAILED_NOPW,"Login failed - password not supplied");
    C(LOGIN_FAILED_NOTFOUND,"Login failed - no match found");

    C(USAGE,"Usage error");
    C(INVALID_ARGS,"Invalid argument(s)");
    C(MISSING_ARGS,"Missing argument(s)");
    C(AMBIGUOUS_UUID,"Resource identifier is ambiguous");
    C(UNRESOLVED_UUID,"Provided uuid/tag/branch could not be resolved");
    C(RESOURCE_ALREADY_EXISTS,"Resource already exists");
    C(RESOURCE_NOT_FOUND,"Resource not found");

    C(DB,"Database error");
    C(STMT_PREP,"Statement preparation failed");
    C(STMT_BIND,"Statement parameter binding failed");
    C(STMT_EXEC,"Statement execution/stepping failed");
    C(DB_LOCKED,"Database is locked");
    C(DB_NEEDS_REBUILD,"Fossil repository needs to be rebuilt");
    C(DB_NOT_FOUND,"Fossil repository db file could not be found.");
    C(DB_NOT_VALID, "Fossil repository db file is not valid.");
    C(DB_NEEDS_CHECKOUT, "Command requires a local check-out.");
#undef C
    default:
      return "Unknown Error";
  }
}

/*
** Implements the cson_data_dest_f() interface and outputs the data to
** a fossil Blob object.  pState must be-a initialized (Blob*), to
** which n bytes of src will be appended.
**/
int cson_data_dest_Blob(void * pState, void const * src, unsigned int n){
  Blob * b = (Blob*)pState;
  blob_append( b, (char const *)src, (int)n ) /* will die on OOM */;
  return 0;
}

/*
** Convenience wrapper around cson_output() which appends the output
** to pDest. pOpt may be NULL, in which case g.json.outOpt will be used.
*/
int cson_output_Blob( cson_value const * pVal, Blob * pDest,
                      cson_output_opt const * pOpt ){
  return cson_output( pVal, cson_data_dest_Blob,
                      pDest, pOpt ? pOpt : &g.json.outOpt );
}

/*
** Convenience wrapper around cson_parse() which reads its input
** from pSrc. pSrc is rewound before parsing.
**
** pInfo may be NULL. If it is not NULL then it will contain details
** about the parse state when this function returns.
**
** On success a new JSON Object or Array is returned (owned by the
** caller). On error NULL is returned.
*/
cson_value * cson_parse_Blob( Blob * pSrc, cson_parse_info * pInfo ){
  cson_value * root = NULL;
  cson_parse_string( &root, blob_str(pSrc), blob_size(pSrc), NULL, pInfo );
  return root;
}

/*
** Implements the cson_data_dest_f() interface and outputs the data to
** cgi_append_content(). pState is ignored.
**/
int cson_data_dest_cgi(void * pState, void const * src, unsigned int n){
  cgi_append_content( (char const *)src, (int)n );
  return 0;
}

/*
** Returns a string in the form FOSSIL-XXXX, where XXXX is a
** left-zero-padded value of code. The returned buffer is static, and
** must be copied if needed for later.  The returned value will always
** be 11 bytes long (not including the trailing NUL byte).
**
** In practice we will only ever call this one time per app execution
** when constructing the JSON response envelope, so the static buffer
** "shouldn't" be a problem.
**
*/
char const * json_rc_cstr( int code ){
  enum { BufSize = 13 };
  static char buf[BufSize] = {'F','O','S','S','I','L','-',0};
  assert((code >= 1000) && (code <= 9999) && "Invalid Fossil/JSON code.");
  sqlite3_snprintf((int)BufSize, buf+7,"%04d", code);
  return buf;
}

/*
** Adds v to the API-internal cleanup mechanism. key is ignored
** (legacy) but might be re-introduced and "should" be a unique
** (app-wide) value.  Failure to insert an item may be caused by any
** of the following:
**
** - Allocation error.
** - g.json.gc.a is NULL
** - key is NULL or empty.
**
** Returns 0 on success.
**
** Ownership of v is transfered to (or shared with) g.json.gc, and v
** will be valid until that object is cleaned up or some internal code
** incorrectly removes it from the gc (which we never do). If this
** function fails, it is fatal to the app (as it indicates an
** allocation error (more likely than not) or a serious internal error
** such as numeric overflow).
*/
void json_gc_add( char const * key, cson_value * v ){
  int const rc = cson_array_append( g.json.gc.a, v );

  assert( NULL != g.json.gc.a );
  if( 0 != rc ){
    cson_value_free( v );
  }
  assert( (0==rc) && "Adding item to GC failed." );
  if(0!=rc){
    fprintf(stderr,"%s: FATAL: alloc error.\n", g.argv[0])
        /* reminder: allocation error is the only reasonable cause of
           error here, provided g.json.gc.a and v are not NULL.
        */
        ;
    fossil_exit(1)/*not fossil_panic() b/c it might land us somewhere
                    where this function is called again.
                  */;
  }
}


/*
** Returns the value of json_rc_cstr(code) as a new JSON
** string, which is owned by the caller and must eventually
** be cson_value_free()d or transfered to a JSON container.
*/
cson_value * json_rc_string( int code ){
  return cson_value_new_string( json_rc_cstr(code), 11 );
}

cson_value * json_new_string( char const * str ){
  return str
    ? cson_value_new_string(str,strlen(str))
    : NULL;
}

cson_value * json_new_string_f( char const * fmt, ... ){
  cson_value * v;
  char * zStr;
  va_list vargs;
  va_start(vargs,fmt);
  zStr = vmprintf(fmt,vargs);
  va_end(vargs);
  v = cson_value_new_string(zStr, strlen(zStr));
  fossil_free(zStr);
  return v;
}

cson_value * json_new_int( i64 v ){
  return cson_value_new_integer((cson_int_t)v);
}

/*
** Gets a POST/POST.payload/GET/COOKIE/ENV value. The returned memory
** is owned by the g.json object (one of its sub-objects). Returns
** NULL if no match is found.
**
** ENV means the system environment (getenv()).
**
** Precedence: POST.payload, GET/COOKIE/non-JSON POST, JSON POST, ENV.
**
** FIXME: the precedence SHOULD be: GET, POST.payload, POST, COOKIE,
** ENV, but the amalgamation of the GET/POST vars makes it effectively
** impossible to do that. Since fossil only uses one cookie, cookie
** precedence isn't a real/high-priority problem.
*/
cson_value * json_getenv( char const * zKey ){
  cson_value * rc;
  rc = g.json.reqPayload.o
    ? cson_object_get( g.json.reqPayload.o, zKey )
    : NULL;
  if(rc){
    return rc;
  }
  rc = cson_object_get( g.json.param.o, zKey );
  if( rc ){
    return rc;
  }
  rc = cson_object_get( g.json.post.o, zKey );
  if(rc){
    return rc;
  }else{
    char const * cv = PD(zKey,NULL);
    if(!cv && !g.isHTTP){
      /* reminder to self: in CLI mode i'd like to try
         find_option(zKey,NULL,XYZ) here, but we don't have a sane
         default for the XYZ param here.
      */
      cv = fossil_getenv(zKey);
    }
    if(cv){/*transform it to JSON for later use.*/
      /* use sscanf() to figure out if it's an int,
         and transform it to JSON int if it is.

         FIXME: use strtol(), since it has more accurate
         error handling.
      */
      int intVal = -1;
      char endOfIntCheck;
      int const scanRc = sscanf(cv,"%d%c",&intVal, &endOfIntCheck)
        /* The %c bit there is to make sure that we don't accept 123x
          as a number. sscanf() returns the number of tokens
          successfully parsed, so an RC of 1 will be correct for "123"
          but "123x" will have RC==2.

          But it appears to not be working that way :/
        */
        ;
      if(1==scanRc){
        json_setenv( zKey, cson_value_new_integer(intVal) );
      }else{
        rc = cson_value_new_string(cv,strlen(cv));
        json_setenv( zKey, rc );
      }
      return rc;
    }else{
      return NULL;
    }
  }
}

/*
** Wrapper around json_getenv() which...
**
** If it finds a value and that value is-a JSON number or is a string
** which looks like an integer or is-a JSON bool/null then it is
** converted to an int. If none of those apply then dflt is returned.
*/
int json_getenv_int(char const * pKey, int dflt ){
  cson_value const * v = json_getenv(pKey);
  const cson_type_id type = v ? cson_value_type_id(v) : CSON_TYPE_UNDEF;
  switch(type){
    case CSON_TYPE_INTEGER:
    case CSON_TYPE_DOUBLE:
      return (int)cson_value_get_integer(v);
    case CSON_TYPE_STRING: {
      char const * sv = cson_string_cstr(cson_value_get_string(v));
      assert( (NULL!=sv) && "This is quite unexpected." );
      return sv ? atoi(sv) : dflt;
    }
    case CSON_TYPE_BOOL:
      return cson_value_get_bool(v) ? 1 : 0;
    case CSON_TYPE_NULL:
      return 0;
    default:
      return dflt;
  }
}


/*
** Wrapper around json_getenv() which tries to evaluate a payload/env
** value as a boolean. Uses mostly the same logic as
** json_getenv_int(), with the addition that string values which
** either start with a digit 1..9 or the letters [tTyY] are considered
** to be true. If this function cannot find a matching key/value then
** dflt is returned. e.g. if it finds the key but the value is-a
** Object then dftl is returned.
**
** If an entry is found, this function guarantees that it will return
** either 0 or 1, as opposed to "0 or non-zero", so that clients can
** pass a different value as dflt. Thus they can use, e.g. -1 to know
** whether or not this function found a match (it will return -1 in
** that case).
*/
int json_getenv_bool(char const * pKey, int dflt ){
  cson_value const * v = json_getenv(pKey);
  const cson_type_id type = v ? cson_value_type_id(v) : CSON_TYPE_UNDEF;
  switch(type){
    case CSON_TYPE_INTEGER:
    case CSON_TYPE_DOUBLE:
      return cson_value_get_integer(v) ? 1 : 0;
    case CSON_TYPE_STRING: {
      char const * sv = cson_string_cstr(cson_value_get_string(v));
      assert( (NULL!=sv) && "This is quite unexpected." );
      if(!*sv || ('0'==*sv)){
        return 0;
      }else{
        return ((('1'<=*sv) && ('9'>=*sv))
                || ('t'==*sv) || ('T'==*sv)
                || ('y'==*sv) || ('Y'==*sv)
                )
          ? 1 : 0;
      }
    }
    case CSON_TYPE_BOOL:
      return cson_value_get_bool(v) ? 1 : 0;
    case CSON_TYPE_NULL:
      return 0;
    default:
      return dflt;
  }
}

/*
** Returns the string form of a json_getenv() value, but ONLY If that
** value is-a String. Non-strings are not converted to strings for
** this purpose. Returned memory is owned by g.json or fossil and is
** valid until end-of-app or the given key is replaced in fossil's
** internals via cgi_replace_parameter() and friends or json_setenv().
*/
char const * json_getenv_cstr( char const * zKey ){
  return cson_value_get_cstr( json_getenv(zKey) );
}

/*
** An extended form of find_option() which tries to look up a combo
** GET/POST/CLI argument.
**
** zKey must be the GET/POST parameter key. zCLILong must be the "long
** form" CLI flag (NULL means to use zKey). zCLIShort may be NULL or
** the "short form" CLI flag (if NULL, no short form is used).
**
** If argPos is >=0 and no other match is found,
** json_command_arg(argPos) is also checked.
**
** On error (no match found) NULL is returned.
**
** This ONLY works for String JSON/GET/CLI values, not JSON
** booleans and whatnot.
*/
char const * json_find_option_cstr2(char const * zKey,
                                    char const * zCLILong,
                                    char const * zCLIShort,
                                    int argPos){
  char const * rc = NULL;
  assert(NULL != zKey);
  if(!g.isHTTP){
    rc = find_option(zCLILong ? zCLILong : zKey,
                     zCLIShort, 1);
  }
  if(!rc && fossil_has_json()){
    rc = json_getenv_cstr(zKey);
    if(!rc && zCLIShort){
      rc = cson_value_get_cstr( cson_object_get( g.json.param.o, zCLIShort) );
    }
  }
  if(!rc && (argPos>=0)){
    rc = json_command_arg((unsigned char)argPos);
  }
  return rc;
}

/*
** Short-hand form of json_find_option_cstr2(zKey,zCLILong,zCLIShort,-1).
*/
char const * json_find_option_cstr(char const * zKey,
                                   char const * zCLILong,
                                   char const * zCLIShort){
  return json_find_option_cstr2(zKey, zCLILong, zCLIShort, -1);
}

/*
** The boolean equivalent of json_find_option_cstr().
** If the option is not found, dftl is returned.
*/
int json_find_option_bool(char const * zKey,
                          char const * zCLILong,
                          char const * zCLIShort,
                          int dflt ){
  int rc = -1;
  if(!g.isHTTP){
    if(NULL != find_option(zCLILong ? zCLILong : zKey,
                           zCLIShort, 0)){
      rc = 1;
    }
  }
  if((-1==rc) && fossil_has_json()){
    rc = json_getenv_bool(zKey,-1);
  }
  return (-1==rc) ? dflt : rc;
}

/*
** The integer equivalent of json_find_option_cstr2().
** If the option is not found, dftl is returned.
*/
int json_find_option_int(char const * zKey,
                         char const * zCLILong,
                         char const * zCLIShort,
                         int dflt ){
  enum { Magic = -1947854832 };
  int rc = Magic;
  if(!g.isHTTP){
    /* FIXME: use strtol() for better error/dflt handling. */
    char const * opt = find_option(zCLILong ? zCLILong : zKey,
                                   zCLIShort, 1);
    if(NULL!=opt){
      rc = atoi(opt);
    }
  }
  if(Magic==rc){
    rc = json_getenv_int(zKey,Magic);
  }
  return (Magic==rc) ? dflt : rc;
}


/*
** Adds v to g.json.param.o using the given key. May cause any prior
** item with that key to be destroyed (depends on current reference
** count for that value). On success, transfers (or shares) ownership
** of v to (or with) g.json.param.o. On error ownership of v is not
** modified.
*/
int json_setenv( char const * zKey, cson_value * v ){
  return cson_object_set( g.json.param.o, zKey, v );
}

/*
** Guesses a RESPONSE Content-Type value based (primarily) on the
** HTTP_ACCEPT header.
**
** It will try to figure out if the client can support
** application/json, text/javascript, and will fall back to
** text/plain if it cannot figure out anything more specific.
**
** Returned memory is static and immutable, but if the environment
** changes after calling this then subsequent calls to this function
** might return different (also static/immutable) values.
*/
char const * json_guess_content_type(){
  char const * cset;
  char doUtf8;
  cset = PD("HTTP_ACCEPT_CHARSET",NULL);
  doUtf8 = ((NULL == cset) || (NULL!=strstr("utf-8",cset)))
    ? 1 : 0;
  if( g.json.jsonp ){
    return doUtf8
      ? "text/javascript; charset=utf-8"
      : "text/javascript";
  }else{
    /*
      Content-type

      If the browser does not sent an ACCEPT for application/json
      then we fall back to text/plain.
    */
    char const * cstr;
    cstr = PD("HTTP_ACCEPT",NULL);
    if( NULL == cstr ){
      return doUtf8
        ? "application/json; charset=utf-8"
        : "application/json";
    }else{
      if( strstr( cstr, "application/json" )
          || strstr( cstr, "*/*" ) ){
        return doUtf8
          ? "application/json; charset=utf-8"
          : "application/json";
      }else{
        return "text/plain";
      }
    }
  }
}

/*
 ** Given a request CONTENT_TYPE value, this function returns true
 ** if it is of a type which the JSON API can ostensibly read.
 **
 ** It accepts any of application/json, text/plain,
 ** application/javascript, or text/javascript. The former is
 ** preferred, but was not widespread when this API was initially
 ** built, so the latter forms are permitted as fallbacks.
 */
int json_can_consume_content_type(const char * zType){
  return fossil_strcmp(zType, "application/json")==0
    || fossil_strcmp(zType,"text/plain")==0/*assume this MIGHT be JSON*/
    || fossil_strcmp(zType,"text/javascript")==0
    || fossil_strcmp(zType,"application/javascript")==0;
}

/*
** Sends pResponse to the output stream as the response object.  This
** function does no validation of pResponse except to assert() that it
** is not NULL. The caller is responsible for ensuring that it meets
** API response envelope conventions.
**
** In CLI mode pResponse is sent to stdout immediately. In HTTP
** mode pResponse replaces any current CGI content but cgi_reply()
** is not called to flush the output.
**
** If g.json.jsonp is not NULL then the content type is set to
** text/javascript and the output is wrapped in a jsonp
** wrapper.
**
** This function works only the first time it is called. It "should
** not" ever be called more than once but certain calling
** constellations might trigger that, in which case the second and
** subsequent calls are no-ops.
*/
void json_send_response( cson_value const * pResponse ){
  static int once = 0;
  assert( NULL != pResponse );
  if( once++ ) return;
  if( g.isHTTP ){
    cgi_reset_content();
    if( g.json.jsonp ){
      cgi_set_content_type("text/javascript");
      cgi_printf("%s(",g.json.jsonp);
    }
    cson_output( pResponse, cson_data_dest_cgi, NULL, &g.json.outOpt );
    if( g.json.jsonp ){
      cgi_append_content(")",1);
    }
  }else{/*CLI mode*/
    if( g.json.jsonp ){
      fprintf(stdout,"%s(",g.json.jsonp);
    }
    cson_output_FILE( pResponse, stdout, &g.json.outOpt );
    if( g.json.jsonp ){
      fwrite(")\n", 2, 1, stdout);
    }
  }
}

/*
** Returns the current request's JSON authentication token, or NULL if
** none is found. The token's memory is owned by (or shared with)
** g.json.
**
** If an auth token is found in the GET/POST request data then fossil
** is given that data for use in authentication for this
** session. i.e. the GET/POST data overrides fossil's authentication
** cookie value (if any) and also works with clients which do not
** support cookies.
**
** Must be called once before login_check_credentials() is called or
** we will not be able to replace fossil's internal idea of the auth
** info in time (and future changes to that state may cause unexpected
** results).
**
** The result of this call are cached for future calls.
**
** Special case: if g.useLocalauth is true (i.e. the --localauth flag
** was used to start the fossil server instance) and the current
** connection is "local", any authToken provided by the user is
** ignored and no new token is created: localauth mode trumps the
** authToken.
*/
cson_value * json_auth_token(){
  assert(g.json.gc.a && "json_bootstrap_early() was not called!");
  if( g.json.authToken==0 && g.noPswd==0
      /* g.noPswd!=0 means the user was logged in via a local
         connection using --localauth. */
      ){
    /* Try to get an authorization token from GET parameter, POSTed
       JSON, or fossil cookie (in that order). */
    g.json.authToken = json_getenv(FossilJsonKeys.authToken);
    if(g.json.authToken
       && cson_value_is_string(g.json.authToken)
       && !PD(login_cookie_name(),NULL)){
      /* tell fossil to use this login info.

         FIXME?: because the JSON bits don't carry around
         login_cookie_name(), there is(?) a potential(?) login hijacking
         window here. We may need to change the JSON auth token to be in
         the form: login_cookie_name()=...

         Then again, the hardened cookie value helps ensure that
         only a proper key/value match is valid.
      */
      cgi_replace_parameter( login_cookie_name(),
                             cson_value_get_cstr(g.json.authToken) );
    }else if( g.isHTTP ){
      /* try fossil's conventional cookie. */
      /* Reminder: chicken/egg scenario regarding db access in CLI
         mode because login_cookie_name() needs the db. CLI
         mode does not use any authentication, so we don't need
         to support it here.
      */
      char const * zCookie = P(login_cookie_name());
      if( zCookie && *zCookie ){
        /* Transfer fossil's cookie to JSON for downstream convenience... */
        cson_value * v = cson_value_new_string(zCookie, strlen(zCookie));
        json_gc_add( FossilJsonKeys.authToken, v );
        g.json.authToken = v;
      }
    }
  }
  return g.json.authToken;
}

/*
** If g.json.reqPayload.o is NULL then NULL is returned, else the
** given property is searched for in the request payload.  If found it
** is returned. The returned value is owned by (or shares ownership
** with) g.json, and must NOT be cson_value_free()'d by the
** caller.
*/
cson_value * json_req_payload_get(char const *pKey){
  return g.json.reqPayload.o
    ? cson_object_get(g.json.reqPayload.o,pKey)
    : NULL;
}


/*
** Returns non-zero if the json_bootstrap_early() function has already
** been called.  In general, this function should be used sparingly,
** e.g. from low-level support functions like fossil_warning() where
** there is genuine uncertainty about whether (or not) the JSON setup
** has already been called.
*/
int json_is_bootstrapped_early(void){
  return ((g.json.gc.v != NULL) && (g.json.gc.a != NULL));
}

/*
** Initializes some JSON bits which need to be initialized relatively
** early on. It should be called by any routine which might need to
** call into JSON relatively early on in the init process.
** Specifically, early on in cgi_init() and json_cmd_top(), but also
** from any error reporting routines which might be triggered (early
** on in those functions).
**
** Initializes g.json.gc and g.json.param. This code does not (and
** must not) rely on any of the fossil environment having been set
** up. e.g. it must not use cgi_parameter() and friends because this
** must be called before those data are initialized.
**
** If called multiple times, calls after the first are a no-op.
*/
void json_bootstrap_early(void){
  cson_value * v;

  if(g.json.gc.v!=NULL){
    /* Avoid multiple bootstrappings. */
    return;
  }
  g.json.timerId = fossil_timer_start();
  /* g.json.gc is our "garbage collector" - where we put JSON values
     which need a long lifetime but don't have a logical parent to put
     them in. */
  v = cson_value_new_array();
  g.json.gc.v = v;
  assert(0 != g.json.gc.v);
  g.json.gc.a = cson_value_get_array(v);
  assert(0 != g.json.gc.a);
  cson_value_add_reference(v)
    /* Needed to allow us to include this value in other JSON
       containers without transferring ownership to those containers.
       All other persistent g.json.XXX.v values get appended to
       g.json.gc.a, and therefore already have a live reference
       for this purpose. */
    ;

  /*
    g.json.param holds the JSONized counterpart of fossil's
    cgi_parameter_xxx() family of data. We store them as JSON, as
    opposed to using fossil's data directly, because we can retain
    full type information for data this way (as opposed to it always
    being of type string).
  */
  v = cson_value_new_object();
  g.json.param.v = v;
  g.json.param.o = cson_value_get_object(v);
  json_gc_add("$PARAMS", v);
}

/*
** Appends a warning object to the (pending) JSON response.
**
** Code must be a FSL_JSON_W_xxx value from the FossilJsonCodes enum.
**
** A Warning object has this JSON structure:
**
** { "code":integer, "text":"string" }
**
** But the text part is optional.
**
** If msg is non-NULL and not empty then it is used as the "text"
** property's value. It is copied, and need not refer to static
** memory.
**
** CURRENTLY this code only allows a given warning code to be
** added one time, and elides subsequent warnings. The intention
** is to remove that burden from loops which produce warnings.
**
** FIXME: if msg is NULL then use a standard string for
** the given code. If !*msg then elide the "text" property,
** for consistency with how json_err() works.
*/
void json_warn( int code, char const * fmt, ... ){
  cson_object * obj = NULL;
  assert( (code>FSL_JSON_W_START)
          && (code<FSL_JSON_W_END)
          && "Invalid warning code.");
  assert(g.json.gc.a && "json_bootstrap_early() was not called!");
  if(!g.json.warnings){
    g.json.warnings = cson_new_array();
    assert((NULL != g.json.warnings) && "Alloc error.");
    json_gc_add("$WARNINGS",cson_array_value(g.json.warnings));
  }
  obj = cson_new_object();
  cson_array_append(g.json.warnings, cson_object_value(obj));
  cson_object_set(obj,"code",cson_value_new_integer(code));
  if(fmt && *fmt){
    /* FIXME: treat NULL fmt as standard warning message for
       the code, but we don't have those yet.
    */
    va_list vargs;
    char * msg;
    va_start(vargs,fmt);
    msg = vmprintf(fmt,vargs);
    va_end(vargs);
    cson_object_set(obj,"text", cson_value_new_string(msg,strlen(msg)));
    fossil_free(msg);
  }
}

/*
** Splits zStr (which must not be NULL) into tokens separated by the
** given separator character. If doDeHttp is true then each element
** will be passed through dehttpize(), otherwise they are used
** as-is. Note that tokenization happens before dehttpize(),
** which is significant if the ENcoded tokens might contain the
** separator character.
**
** Each new element is appended to the given target array object,
** which must not be NULL and ownership of it is not changed by this
** call.
**
** On success, returns the number of tokens _encountered_. On error a
** NEGATIVE number is returned - its absolute value is the number of
** tokens encountered (i.e. it reveals which token in zStr was
** problematic).
**
** Achtung: leading and trailing whitespace of elements are elided.
**
** Achtung: empty elements will be skipped, meaning consecutive empty
** elements are collapsed.
*/
int json_string_split( char const * zStr,
                       char separator,
                       int doDeHttp,
                       cson_array * target ){
  char const * p = zStr /* current byte */;
  char const * head  /* current start-of-token */;
  unsigned int len = 0   /* current token's length */;
  int rc = 0   /* return code (number of added elements)*/;
  assert( zStr && target );
  while( fossil_isspace(*p) ){
    ++p;
  }
  head = p;
  for( ; ; ++p){
    if( !*p || (separator == *p) ){
      if( len ){/* append head..(head+len) as next array
                   element. */
        cson_value * part = NULL;
        char * zPart = NULL;
        ++rc;
        assert( head != p );
        zPart = (char*)fossil_malloc(len+1);
        memcpy(zPart, head, len);
        zPart[len] = 0;
        if(doDeHttp){
          dehttpize(zPart);
        }
        if( *zPart ){
          /* should only fail if someone manages to url-encoded a NUL byte */
          part = cson_value_new_string(zPart, strlen(zPart));
          if( 0 != cson_array_append( target, part ) ){
            cson_value_free(part);
            rc = -rc;
            break;
          }
        }else{
          assert(0 && "i didn't think this was possible!");
          fprintf(stderr,"%s:%d: My God! It's full of stars!\n",
                  __FILE__, __LINE__);
          fossil_exit(1)
            /* Not fossil_panic() b/c this code needs to be able to
              run before some of the fossil/json bits are initialized,
              and fossil_panic() calls into the JSON API.
            */
            ;
        }
        fossil_free(zPart);
        len = 0;
      }
      if( !*p ){
        break;
      }
      head = p+1;
      while( *head && fossil_isspace(*head) ){
        ++head;
        ++p;
      }
      if(!*head){
        break;
      }
      continue;
    }
    ++len;
  }
  return rc;
}

/*
** Wrapper around json_string_split(), taking the same first 3
** parameters as this function, but returns the results as a JSON
** Array (if splitting produced tokens) or NULL (if splitting failed
** in any way or produced no tokens).
**
** The returned value is owned by the caller. If not NULL then it
** _will_ have a JSON type of Array.
*/
cson_value * json_string_split2( char const * zStr,
                                 char separator,
                                 int doDeHttp ){
  cson_array * a = cson_new_array();
  int rc = json_string_split( zStr, separator, doDeHttp, a );
  if( 0>=rc ){
    cson_free_array(a);
    a = NULL;
  }
  return a ? cson_array_value(a) : NULL;
}


/*
** Performs some common initialization of JSON-related state.  Must be
** called by the json_page_top() and json_cmd_top() dispatching
** functions to set up the JSON stat used by the dispatched functions.
**
** Implicitly sets up the login information state in CGI mode, but
** does not perform any permissions checking. It _might_ (haven't
** tested this) die with an error if an auth cookie is malformed.
**
** This must be called by the top-level JSON command dispatching code
** before they do any work.
**
** This must only be called once, or an assertion may be triggered.
*/
void json_bootstrap_late(){
  static char once = 0  /* guard against multiple runs */;
  char const * zPath = P("PATH_INFO");
  assert(g.json.gc.a && "json_bootstrap_early() was not called!");
  assert( (0==once) && "json_bootstrap_late() called too many times!");
  if( once ){
    return;
  }else{
    once = 1;
  }
  assert(g.json.isJsonMode
         && "g.json.isJsonMode should have been set up by now.");
  g.json.resultCode = 0;
  g.json.cmd.offset = -1;
  g.json.jsonp = PD("jsonp",NULL)
    /* FIXME: do some sanity checking on g.json.jsonp and ignore it
       if it is not halfway reasonable.
    */
    ;
  if( !g.isHTTP && g.fullHttpReply ){
    /* workaround for server mode, so we see it as CGI mode. */
    g.isHTTP = 1;
  }

  if(g.isHTTP){
    cgi_set_content_type(json_guess_content_type())
      /* reminder: must be done after g.json.jsonp is initialized */
      ;
#if 0
    /* Calling this seems to trigger an SQLITE_MISUSE warning???
       Maybe it's not legal to set the logger more than once?
    */
    sqlite3_config(SQLITE_CONFIG_LOG, NULL, 0)
        /* avoids debug messages on stderr in JSON mode */
        ;
#endif
  }

  g.json.cmd.v = cson_value_new_array();
  g.json.cmd.a = cson_value_get_array(g.json.cmd.v);
  json_gc_add( FossilJsonKeys.commandPath, g.json.cmd.v );
  /*
    The following if/else block translates the PATH_INFO path (in
    CLI/server modes) or g.argv (CLI mode) into an internal list so
    that we can simplify command dispatching later on.

    Note that translating g.argv this way is overkill but allows us to
    avoid CLI-only special-case handling in other code, e.g.
    json_command_arg().
  */
  if( zPath ){/* Either CGI or server mode... */
    /* Translate PATH_INFO into JSON array for later convenience. */
    json_string_split(zPath, '/', 1, g.json.cmd.a);
  }else{/* assume CLI mode */
    int i;
    char const * arg;
    cson_value * part;
    for(i = 1/*skip argv[0]*/; i < g.argc; ++i ){
      arg = g.argv[i];
      if( !arg || !*arg ){
        continue;
      }
      if('-' == *arg){
        /* workaround to skip CLI args so that
           json_command_arg() does not see them.
           This assumes that all arguments come LAST
           on the command line.
        */
        break;
      }
      part = cson_value_new_string(arg,strlen(arg));
      cson_array_append(g.json.cmd.a, part);
    }
  }

  while(!g.isHTTP){
    /* Simulate JSON POST data via input file.  Pedantic reminder:
       error handling does not honor user-supplied g.json.outOpt
       because outOpt cannot (generically) be configured until after
       POST-reading is finished.
    */
    FILE * inFile = NULL;
    char const * jfile = find_option("json-input",NULL,1);
    Blob json = BLOB_INITIALIZER;
    if(!jfile || !*jfile){
      break;
    }
    inFile = (0==strcmp("-",jfile))
      ? stdin
      : fossil_fopen(jfile,"rb");
    if(!inFile){
      g.json.resultCode = FSL_JSON_E_FILE_OPEN_FAILED;
      fossil_fatal("Could not open JSON file [%s].",jfile)
        /* Does not return. */
        ;
    }
    blob_read_from_channel(&json, inFile, -1);
    fossil_fclose(inFile);
    cgi_parse_POST_JSON(&json);
    blob_reset(&json);
    break;
  }

  /* g.json.reqPayload exists only to simplify some of our access to
     the request payload. We currently only use this in the context of
     Object payloads, not Arrays, strings, etc.
  */
  g.json.reqPayload.v = cson_object_get( g.json.post.o,FossilJsonKeys.payload );
  if( g.json.reqPayload.v ){
    g.json.reqPayload.o = cson_value_get_object( g.json.reqPayload.v )
        /* g.json.reqPayload.o may legally be NULL, which means only that
           g.json.reqPayload.v is-not-a Object.
        */;
  }

  /* Anything which needs json_getenv() and friends should go after
     this point.
  */

  if(1 == cson_array_length_get(g.json.cmd.a)){
    /* special case: if we're at the top path, look for
       a "command" request arg which specifies which command
       to run.
    */
    char const * cmd = json_getenv_cstr("command");
    if(cmd){
      json_string_split(cmd, '/', 0, g.json.cmd.a);
      g.json.cmd.commandStr = cmd;
    }
  }


  if(!g.json.jsonp){
    g.json.jsonp = json_find_option_cstr("jsonp",NULL,NULL);
  }
  if(!g.isHTTP){
    g.json.errorDetailParanoia = 0;/*disable error code dumb-down for CLI mode*/
  }

  {/* set up JSON output formatting options. */
    int indent = -1;
    indent = json_find_option_int("indent",NULL,"I",-1);
    g.json.outOpt.indentation = (0>indent)
      ? (g.isHTTP ? 0 : 1)
      : (unsigned char)indent;
    g.json.outOpt.addNewline = g.isHTTP
      ? 0
      : (g.json.jsonp ? 0 : 1);
  }

  if( g.isHTTP ){
    json_auth_token()/* will copy our auth token, if any, to fossil's
                        core, which we need before we call
                        login_check_credentials(). */;
    login_check_credentials()/* populates g.perm */;
  }
  else{
    /* FIXME: we need an option which allows us to skip this. At least
       one known command (/json/version) does not need an opened
       repo. The problem here is we cannot know which functions need
       it from here (because command dispatching hasn't yet happened)
       and all other commands rely on the repo being opened before
       they are called. A textbook example of lack of foresight :/.
     */
    db_find_and_open_repository(OPEN_ANY_SCHEMA,0);
  }
}

/*
** Returns the ndx'th item in the "command path", where index 0 is the
** position of the "json" part of the path. Returns NULL if ndx is out
** of bounds or there is no "json" path element.
**
** In CLI mode the "path" is the list of arguments (skipping argv[0]).
** In server/CGI modes the path is taken from PATH_INFO.
**
** The returned bytes are owned by g.json.cmd.v and _may_ be
** invalidated if that object is modified (depending on how it is
** modified).
**
** Note that CLI options are not included in the command path. Use
** find_option() to get those.
**
*/
char const * json_command_arg(unsigned short ndx){
  cson_array * ar = g.json.cmd.a;
  assert((NULL!=ar) && "Internal error. Was json_bootstrap_late() called?");
  assert((g.argc>1) &&"Internal error - we never should have gotten this far.");
  if( g.json.cmd.offset < 0 ){
    /* first-time setup. */
    short i = 0;
#define NEXT cson_string_cstr(          \
                 cson_value_get_string( \
                   cson_array_get(ar,i) \
                   ))
    char const * tok = NEXT;
    while( tok ){
      if( g.isHTTP/*workaround for "abbreviated name" in CLI mode*/
          ? (0==strncmp("json",tok,4))
          : (0==strcmp(g.argv[1],tok))
          ){
        g.json.cmd.offset = i;
        break;
      }
      ++i;
      tok = NEXT;
    }
  }
#undef NEXT
  if(g.json.cmd.offset < 0){
    return NULL;
  }else{
    ndx = g.json.cmd.offset + ndx;
    return cson_string_cstr(cson_value_get_string(
                              cson_array_get( ar, g.json.cmd.offset + ndx )));
  }
}

/* Returns the C-string form of json_auth_token(), or NULL
** if json_auth_token() returns NULL.
*/
char const * json_auth_token_cstr(){
  return cson_value_get_cstr( json_auth_token() );
}

/*
** Returns the JsonPageDef with the given name, or NULL if no match is
** found.
**
** head must be a pointer to an array of JsonPageDefs in which the
** last entry has a NULL name.
*/
JsonPageDef const * json_handler_for_name( char const * name,
                                           JsonPageDef const * head ){
  JsonPageDef const * pageDef = head;
  assert( head != NULL );
  if(name && *name) for( ; pageDef->name; ++pageDef ){
    if( 0 == strcmp(name, pageDef->name) ){
      return pageDef;
    }
  }
  return NULL;
}

/*
** Given a Fossil/JSON result code, this function "dumbs it down"
** according to the current value of g.json.errorDetailParanoia. The
** dumbed-down value is returned.
**
** This function assert()s that code is in the inclusive range 0 to
** 9999.
**
** Note that WARNING codes (1..999) are never dumbed down.
**
*/
static int json_dumbdown_rc( int code ){
  if(!g.json.errorDetailParanoia
     || !code
     || ((code>=FSL_JSON_W_START) && (code<FSL_JSON_W_END))){
    return code;
  }else{
    int modulo = 0;
    assert((code >= 1000) && (code <= 9999) && "Invalid Fossil/JSON code.");
    switch( g.json.errorDetailParanoia ){
      case 1: modulo = 10; break;
      case 2: modulo = 100; break;
      case 3: modulo = 1000; break;
      default: break;
    }
    if( modulo ) code = code - (code % modulo);
    return code;
  }
}

/*
** Convenience routine which converts a Julian time value into a Unix
** Epoch timestamp. Requires the db, so this cannot be used before the
** repo is opened (will trigger a fatal error in db_xxx()). The returned
** value is owned by the caller.
*/
cson_value * json_julian_to_timestamp(double j){
  return cson_value_new_integer((cson_int_t)
           db_int64(0,"SELECT cast(strftime('%%s',%lf) as int)",j)
                                );
}

/*
** Returns a timestamp value.
*/
cson_int_t json_timestamp(){
  return (cson_int_t)time(0);
}

/*
** Returns a new JSON value (owned by the caller) representing
** a timestamp. If timeVal is < 0 then time(0) is used to fetch
** the time, else timeVal is used as-is. The returned value is
** owned by the caller.
*/
cson_value * json_new_timestamp(cson_int_t timeVal){
  return cson_value_new_integer((timeVal<0) ? (cson_int_t)time(0) : timeVal);
}

/*
** Internal helper for json_create_response(). Appends the first
** g.json.dispatchDepth elements of g.json.cmd.a, skipping the first
** one (the "json" part), to a string and returns that string value
** (which is owned by the caller).
*/
static cson_value * json_response_command_path(){
  if(!g.json.cmd.a){
    return NULL;
  }else{
    cson_value * rc = NULL;
    Blob path = empty_blob;
    unsigned int aLen = g.json.dispatchDepth+1;
                                 /*cson_array_length_get(g.json.cmd.a);*/
    unsigned int i = 1;
    for( ; i < aLen; ++i ){
      char const * part = cson_string_cstr(cson_value_get_string(
                                             cson_array_get(g.json.cmd.a, i)));
      if(!part){
#if 1
          fossil_warning("Iterating further than expected in %s.",
                       __FILE__);
#endif
          break;
      }
      blob_appendf(&path,"%s%s", (i>1 ? "/": ""), part);
    }
    rc = json_new_string((blob_size(&path)>0)
                         ? blob_buffer(&path)
                         : "")
      /* reminder; we need an empty string instead of NULL
         in this case, to avoid what outwardly looks like
         (but is not) an allocation error in
         json_create_response().
      */
      ;
    blob_reset(&path);
    return rc;
  }
}

/*
** Returns a JSON Object representation of the global g object.
** Returned value is owned by the caller.
*/
cson_value * json_g_to_json(){
  cson_object * o = NULL;
  cson_object * pay = NULL;
  pay = o = cson_new_object();

#define INT(OBJ,K) cson_object_set(o, #K, json_new_int(OBJ.K))
#define CSTR(OBJ,K) cson_object_set(o, #K, OBJ.K ? json_new_string(OBJ.K) \
                                                 : cson_value_null())
#define VAL(K,V) cson_object_set(o, #K, (V) ? (V) : cson_value_null())
  VAL(capabilities, json_cap_value());
  INT(g, argc);
  INT(g, isConst);
  CSTR(g, zConfigDbName);
  INT(g, repositoryOpen);
  INT(g, localOpen);
  INT(g, minPrefix);
  INT(g, fSqlTrace);
  INT(g, fSqlStats);
  INT(g, fSqlPrint);
  INT(g, fQuiet);
  INT(g, fHttpTrace);
  INT(g, fSystemTrace);
  INT(g, fNoSync);
  INT(g, iErrPriority);
  INT(g, sslNotAvailable);
  INT(g, cgiOutput);
  INT(g, xferPanic);
  INT(g, fullHttpReply);
  INT(g, xlinkClusterOnly);
  INT(g, fTimeFormat);
  INT(g, markPrivate);
  INT(g, clockSkewSeen);
  INT(g, isHTTP);
  INT(g.url, isFile);
  INT(g.url, isHttps);
  INT(g.url, isSsh);
  INT(g.url, port);
  INT(g.url, dfltPort);
  INT(g, useLocalauth);
  INT(g, noPswd);
  INT(g, userUid);
  INT(g, rcvid);
  INT(g, okCsrf);
  INT(g, thTrace);
  INT(g, isHome);
  INT(g, nAux);
  INT(g, allowSymlinks);

  CSTR(g, zOpenRevision);
  CSTR(g, zLocalRoot);
  CSTR(g, zPath);
  CSTR(g, zExtra);
  CSTR(g, zBaseURL);
  CSTR(g, zTop);
  CSTR(g, zContentType);
  CSTR(g, zErrMsg);
  CSTR(g.url, name);
  CSTR(g.url, hostname);
  CSTR(g.url, protocol);
  CSTR(g.url, path);
  CSTR(g.url, user);
  CSTR(g.url, passwd);
  CSTR(g.url, canonical);
  CSTR(g.url, proxyAuth);
  CSTR(g.url, fossil);
  CSTR(g, zLogin);
  CSTR(g, zSSLIdentity);
  CSTR(g, zIpAddr);
  CSTR(g, zNonce);
  CSTR(g, zCsrfToken);

  o = cson_new_object();
  cson_object_set(pay, "json", cson_object_value(o) );
  INT(g.json, isJsonMode);
  INT(g.json, resultCode);
  INT(g.json, errorDetailParanoia);
  INT(g.json, dispatchDepth);
  VAL(authToken, g.json.authToken);
  CSTR(g.json, jsonp);
  VAL(gc, g.json.gc.v);
  VAL(cmd, g.json.cmd.v);
  VAL(param, g.json.param.v);
  VAL(POST, g.json.post.v);
  VAL(warnings, cson_array_value(g.json.warnings));
  /*cson_output_opt outOpt;*/


#undef INT
#undef CSTR
#undef VAL
  return cson_object_value(pay);
}


/*
** Creates a new Fossil/JSON response envelope skeleton.  It is owned
** by the caller, who must eventually free it using cson_value_free(),
** or add it to a cson container to transfer ownership. Returns NULL
** on error.
**
** If payload is not NULL and resultCode is 0 then it is set as the
** "payload" property of the returned object.  If resultCode is 0 then
** it defaults to g.json.resultCode. If resultCode is (or defaults to)
** non-zero and payload is not NULL then this function calls
** cson_value_free(payload) and does not insert the payload into the
** response. In either case, ownership of payload is transfered to (or
** shared with, if the caller holds a reference) this function.
**
** pMsg is an optional message string property (resultText) of the
** response. If resultCode is non-0 and pMsg is NULL then
** json_err_cstr() is used to get the error string. The caller may
** provide his own or may use an empty string to suppress the
** resultText property.
**
*/
static cson_value * json_create_response( int resultCode,
                                          char const * pMsg,
                                          cson_value * payload){
  cson_value * v = NULL;
  cson_value * tmp = NULL;
  cson_object * o = NULL;
  int rc;
  resultCode = json_dumbdown_rc(resultCode ? resultCode : g.json.resultCode);
  o = cson_new_object();
  v = cson_object_value(o);
  if( ! o ) return NULL;
#define SET(K) if(!tmp) goto cleanup; \
  cson_value_add_reference(tmp);      \
  rc = cson_object_set( o, K, tmp );  \
  cson_value_free(tmp);               \
  if(rc) do{                          \
    tmp = NULL;                       \
    goto cleanup;                     \
  }while(0)

  tmp = json_new_string(MANIFEST_UUID);
  SET("fossil");

  tmp = json_new_timestamp(-1);
  SET(FossilJsonKeys.timestamp);

  if( 0 != resultCode ){
    if( ! pMsg ){
      pMsg = g.zErrMsg;
      if(!pMsg){
        pMsg = json_err_cstr(resultCode);
      }
    }
    tmp = json_new_string(json_rc_cstr(resultCode));
    SET(FossilJsonKeys.resultCode);
  }

  if( pMsg && *pMsg ){
    tmp = json_new_string(pMsg);
    SET(FossilJsonKeys.resultText);
  }

  if(g.json.cmd.commandStr){
    tmp = json_new_string(g.json.cmd.commandStr);
  }else{
    tmp = json_response_command_path();
  }
  if(!tmp){
    tmp = json_new_string("???");
  }
  SET("command");

  tmp = json_getenv(FossilJsonKeys.requestId);
  if( tmp ) cson_object_set( o, FossilJsonKeys.requestId, tmp );

  if(0){/* these are only intended for my own testing...*/
    if(g.json.cmd.v){
      tmp = g.json.cmd.v;
      SET("$commandPath");
    }
    if(g.json.param.v){
      tmp = g.json.param.v;
      SET("$params");
    }
    if(0){/*Only for debugging, add some info to the response.*/
      tmp = cson_value_new_integer( g.json.cmd.offset );
      SET("cmd.offset");
      tmp = cson_value_new_bool( g.isHTTP );
      SET("isCGI");
    }
  }

  if(fossil_timer_is_active(g.json.timerId)){
    /* This is, philosophically speaking, not quite the right place
       for ending the timer, but this is the one function which all of
       the JSON exit paths use (and they call it after processing,
       just before they end).
    */
    sqlite3_uint64 span = fossil_timer_stop(g.json.timerId);
    /* I'm actually seeing sub-uSec runtimes in some tests, but a time of
       0 is "just kinda wrong".
    */
    cson_object_set(o,"procTimeUs", cson_value_new_integer((cson_int_t)span));
    span /= 1000/*for milliseconds */;
    cson_object_set(o,"procTimeMs", cson_value_new_integer((cson_int_t)span));
    assert(!fossil_timer_is_active(g.json.timerId));
    g.json.timerId = -1;
  }
  if(g.json.warnings){
    tmp = cson_array_value(g.json.warnings);
    SET("warnings");
  }

  /* Only add the payload to SUCCESS responses. Else delete it. */
  if( NULL != payload ){
    if( resultCode ){
      cson_value_free(payload);
      payload = NULL;
    }else{
      tmp = payload;
      SET(FossilJsonKeys.payload);
    }
  }

  if((g.perm.Admin||g.perm.Setup)
     && json_find_option_bool("debugFossilG","json-debug-g",NULL,0)
     ){
    tmp = json_g_to_json();
    SET("g");
  }

#undef SET
  goto ok;
  cleanup:
  cson_value_free(v);
  v = NULL;
  ok:
  return v;
}

/*
** Outputs a JSON error response to either the cgi_xxx() family of
** buffers (in CGI/server mode) or stdout (in CLI mode). If rc is 0
** then g.json.resultCode is used. If that is also 0 then the "Unknown
** Error" code is used.
**
** If g.isHTTP then the generated JSON error response object replaces
** any currently buffered page output. Because the output goes via
** the cgi_xxx() family of functions, this function inherits any
** compression which fossil does for its output.
**
** If alsoOutput is true AND g.isHTTP then cgi_reply() is called to
** flush the output (and headers). Generally only do this if you are
** about to call exit().
**
** If !g.isHTTP then alsoOutput is ignored and all output is sent to
** stdout immediately.
**
** For generating the resultText property: if msg is not NULL then it
** is used as-is. If it is NULL then g.zErrMsg is checked, and if that
** is NULL then json_err_cstr(code) is used.
*/
void json_err( int code, char const * msg, int alsoOutput ){
  int rc = code ? code : (g.json.resultCode
                          ? g.json.resultCode
                          : FSL_JSON_E_UNKNOWN);
  cson_value * resp = NULL;
  if(g.json.isJsonMode==0) return;
  rc = json_dumbdown_rc(rc);
  if( rc && !msg ){
    msg = g.zErrMsg;
    if(!msg){
      msg = json_err_cstr(rc);
    }
  }
  resp = json_create_response(rc, msg, NULL);
  if(!resp){
    /* about the only error case here is out-of-memory. DO NOT
       call fossil_panic() or fossil_fatal() here because those
       allocate.
    */
    fprintf(stderr, "%s: Fatal error: could not allocate "
            "response object.\n", g.argv[0]);
    fossil_exit(1);
  }
  if( g.isHTTP ){
    if(alsoOutput){
      json_send_response(resp);
    }else{
      /* almost a duplicate of json_send_response() :( */
      cgi_reset_content();
      if( g.json.jsonp ){
        cgi_printf("%s(",g.json.jsonp);
      }
      cson_output( resp, cson_data_dest_cgi, NULL, &g.json.outOpt );
      if( g.json.jsonp ){
        cgi_append_content(")",1);
      }
    }
  }else{
    json_send_response(resp);
  }
  cson_value_free(resp);
}

/*
** Sets g.json.resultCode and g.zErrMsg, but does not report the error
** via json_err(). Returns the code passed to it.
**
** code must be in the inclusive range 1000..9999.
*/
int json_set_err( int code, char const * fmt, ... ){
  assert( (code>=1000) && (code<=9999) );
  fossil_free(g.zErrMsg);
  g.json.resultCode = code;
  if(!fmt || !*fmt){
    g.zErrMsg = mprintf("%s", json_err_cstr(code));
  }else{
    va_list vargs;
    char * msg;
    va_start(vargs,fmt);
    msg = vmprintf(fmt, vargs);
    va_end(vargs);
    g.zErrMsg = msg;
  }
  return code;
}

/*
** Iterates through a prepared SELECT statement and converts each row
** to a JSON object. If pTgt is not NULL then this function will
** append the results to pTgt and return cson_array_value(pTgt). If
** pTgt is NULL then a new Array object is created and returned (owned
** by the caller). Each row of pStmt is converted to an Object and
** appended to the array. If the result set has no rows AND pTgt is
** NULL then NULL (not an empty array) is returned.
*/
cson_value * json_stmt_to_array_of_obj(Stmt *pStmt,
                                       cson_array * pTgt){
  cson_array * a = pTgt;
  char const * warnMsg = NULL;
  cson_value * colNamesV = NULL;
  cson_array * colNames = NULL;
  while( (SQLITE_ROW==db_step(pStmt)) ){
    cson_value * row = NULL;
    if(!a){
      a = cson_new_array();
      assert(NULL!=a);
    }
    if(!colNames){
      colNamesV = cson_sqlite3_column_names(pStmt->pStmt);
      assert(NULL != colNamesV);
      /*Why? cson_value_add_reference(colNamesV) avoids an ownership problem*/;
      colNames = cson_value_get_array(colNamesV);
      assert(NULL != colNames);
    }
    row = cson_sqlite3_row_to_object2(pStmt->pStmt, colNames);
    if(!row && !warnMsg){
      warnMsg = "Could not convert at least one result row to JSON.";
      continue;
    }
    if( 0 != cson_array_append(a, row) ){
      cson_value_free(row);
      if(pTgt != a) {
        cson_free_array(a);
      }
      assert( 0 && "Alloc error.");
      return NULL;
    }
  }
  cson_value_free(colNamesV);
  if(warnMsg){
    json_warn( FSL_JSON_W_ROW_TO_JSON_FAILED, "%s", warnMsg );
  }
  return cson_array_value(a);
}

/*
** Works just like json_stmt_to_array_of_obj(), but each row in the
** result set is represented as an Array of values instead of an
** Object (key/value pairs). If pTgt is NULL and the statement
** has no results then NULL is returned, not an empty array.
*/
cson_value * json_stmt_to_array_of_array(Stmt *pStmt,
                                         cson_array * pTgt){
  cson_array * a = pTgt;
  while( (SQLITE_ROW==db_step(pStmt)) ){
    cson_value * row = NULL;
    if(!a){
      a = cson_new_array();
      assert(NULL!=a);
    }
    row = cson_sqlite3_row_to_array(pStmt->pStmt);
    cson_array_append(a, row);
  }
  return cson_array_value(a);
}

cson_value * json_stmt_to_array_of_values(Stmt *pStmt,
                                          int resultColumn,
                                          cson_array * pTgt){
  cson_array * a = pTgt;
  while( (SQLITE_ROW==db_step(pStmt)) ){
    cson_value * row = cson_sqlite3_column_to_value(pStmt->pStmt,
                                                    resultColumn);
    if(row){
      if(!a){
        a = cson_new_array();
        assert(NULL!=a);
      }
      cson_array_append(a, row);
    }
  }
  return cson_array_value(a);
}

/*
** Executes the given SQL and runs it through
** json_stmt_to_array_of_obj(), returning the result of that
** function. If resetBlob is true then blob_reset(pSql) is called
** after preparing the query.
**
** pTgt has the same semantics as described for
** json_stmt_to_array_of_obj().
**
** FIXME: change this to take a (char const *) instead of a blob,
** to simplify the trivial use-cases (which don't need a Blob).
*/
cson_value * json_sql_to_array_of_obj(Blob * pSql, cson_array * pTgt,
                                      int resetBlob){
  Stmt q = empty_Stmt;
  cson_value * pay = NULL;
  assert( blob_size(pSql) > 0 );
  db_prepare(&q, "%s", blob_str(pSql) /*safe-for-%s*/);
  if(resetBlob){
    blob_reset(pSql);
  }
  pay = json_stmt_to_array_of_obj(&q, pTgt);
  db_finalize(&q);
  return pay;

}

/*
** If the given COMMIT rid has any tags associated with it, this
** function returns a JSON Array containing the tag names (owned by
** the caller), else it returns NULL.
**
** See info_tags_of_checkin() for more details (this is simply a JSON
** wrapper for that function).
**
** If there are no tags then this function returns NULL, not an empty
** Array.
*/
cson_value * json_tags_for_checkin_rid(int rid, int propagatingOnly){
  cson_value * v = NULL;
  char * tags = info_tags_of_checkin(rid, propagatingOnly);
  if(tags){
    if(*tags){
      v = json_string_split2(tags,',',0);
    }
    fossil_free(tags);
  }
  return v;
}

/*
 ** Returns a "new" value representing the boolean value of zVal
 ** (false if zVal is NULL). Note that cson does not really allocate
 ** any memory for boolean values, but they "should" (for reasons of
 ** style and philosophy) be cleaned up like any other values (but
 ** it's a no-op for bools).
 */
cson_value * json_value_to_bool(cson_value const * zVal){
  return cson_value_get_bool(zVal)
    ? cson_value_true()
    : cson_value_false();
}

/*
** Impl of /json/resultCodes
**
*/
cson_value * json_page_resultCodes(void){
    cson_array * list = cson_new_array();
    cson_object * obj = NULL;
    cson_string * kRC;
    cson_string * kSymbol;
    cson_string * kNumber;
    cson_string * kDesc;
    cson_array_reserve( list, 35 );
    kRC = cson_new_string("resultCode",10);
    kSymbol = cson_new_string("cSymbol",7);
    kNumber = cson_new_string("number",6);
    kDesc = cson_new_string("description",11);
#define C(K) obj = cson_new_object(); \
    cson_object_set_s(obj, kRC,json_new_string(json_rc_cstr(FSL_JSON_E_##K))); \
    cson_object_set_s(obj, kSymbol, json_new_string("FSL_JSON_E_"#K) );        \
    cson_object_set_s(obj, kNumber, cson_value_new_integer(FSL_JSON_E_##K) );  \
    cson_object_set_s(obj, kDesc, \
                      json_new_string(json_err_cstr(FSL_JSON_E_##K))); \
    cson_array_append( list, cson_object_value(obj) ); obj = NULL;

    C(GENERIC);
    C(INVALID_REQUEST);
    C(UNKNOWN_COMMAND);
    C(UNKNOWN);
    C(TIMEOUT);
    C(ASSERT);
    C(ALLOC);
    C(NYI);
    C(PANIC);
    C(MANIFEST_READ_FAILED);
    C(FILE_OPEN_FAILED);

    C(AUTH);
    C(MISSING_AUTH);
    C(DENIED);
    C(WRONG_MODE);
    C(LOGIN_FAILED);
    C(LOGIN_FAILED_NOSEED);
    C(LOGIN_FAILED_NONAME);
    C(LOGIN_FAILED_NOPW);
    C(LOGIN_FAILED_NOTFOUND);

    C(USAGE);
    C(INVALID_ARGS);
    C(MISSING_ARGS);
    C(AMBIGUOUS_UUID);
    C(UNRESOLVED_UUID);
    C(RESOURCE_ALREADY_EXISTS);
    C(RESOURCE_NOT_FOUND);

    C(DB);
    C(STMT_PREP);
    C(STMT_BIND);
    C(STMT_EXEC);
    C(DB_LOCKED);
    C(DB_NEEDS_REBUILD);
    C(DB_NOT_FOUND);
    C(DB_NOT_VALID);
#undef C
    return cson_array_value(list);
}


/*
** /json/version implementation.
**
** Returns the payload object (owned by the caller).
*/
cson_value * json_page_version(void){
  cson_value * jval = NULL;
  cson_object * jobj = NULL;
  jval = cson_value_new_object();
  jobj = cson_value_get_object(jval);
#define FSET(X,K) cson_object_set( jobj, K, cson_value_new_string(X,strlen(X)))
  FSET(MANIFEST_UUID,"manifestUuid");
  FSET(MANIFEST_VERSION,"manifestVersion");
  FSET(MANIFEST_DATE,"manifestDate");
  FSET(MANIFEST_YEAR,"manifestYear");
  FSET(RELEASE_VERSION,"releaseVersion");
  cson_object_set( jobj, "releaseVersionNumber",
                   cson_value_new_integer(RELEASE_VERSION_NUMBER) );
  cson_object_set( jobj, "resultCodeParanoiaLevel",
                   cson_value_new_integer(g.json.errorDetailParanoia) );
  FSET(FOSSIL_JSON_API_VERSION, "jsonApiVersion" );
#undef FSET
  return jval;
}


/*
** Returns the current user's capabilities string as a String value.
** Returned value is owned by the caller, and will only be NULL if
** g.userUid is invalid or an out of memory error. Or, it turns out,
** in CLI mode (where there is no logged-in user).
*/
cson_value * json_cap_value(){
  if(g.userUid<=0){
    return NULL;
  }else{
    Stmt q = empty_Stmt;
    cson_value * val = NULL;
    db_prepare(&q, "SELECT cap FROM user WHERE uid=%d", g.userUid);
    if( db_step(&q)==SQLITE_ROW ){
      char const * str = (char const *)sqlite3_column_text(q.pStmt,0);
      if( str ){
        val = json_new_string(str);
      }
    }
    db_finalize(&q);
    return val;
  }
}

/*
** Implementation for /json/cap
**
** Returned object contains details about the "capabilities" of the
** current user (what he may/may not do).
**
** This is primarily intended for debuggering, but may have
** a use in client code. (?)
*/
cson_value * json_page_cap(void){
  cson_value * payload = cson_value_new_object();
  cson_value * sub = cson_value_new_object();
  Stmt q;
  cson_object * obj = cson_value_get_object(payload);
  db_prepare(&q, "SELECT login, cap FROM user WHERE uid=%d", g.userUid);
  if( db_step(&q)==SQLITE_ROW ){
    /* reminder: we don't use g.zLogin because it's 0 for the guest
       user and the HTML UI appears to currently allow the name to be
       changed (but doing so would break other code). */
    char const * str = (char const *)sqlite3_column_text(q.pStmt,0);
    if( str ){
      cson_object_set( obj, "name",
                       cson_value_new_string(str,strlen(str)) );
    }
    str = (char const *)sqlite3_column_text(q.pStmt,1);
    if( str ){
      cson_object_set( obj, "capabilities",
                       cson_value_new_string(str,strlen(str)) );
    }
  }
  db_finalize(&q);
  cson_object_set( obj, "permissionFlags", sub );
  obj = cson_value_get_object(sub);

#define ADD(X,K) cson_object_set(obj, K, cson_value_new_bool(g.perm.X))
  ADD(Setup,"setup");
  ADD(Admin,"admin");
  ADD(Password,"password");
  ADD(Query,"query"); /* don't think this one is actually used */
  ADD(Write,"checkin");
  ADD(Read,"checkout");
  ADD(Hyperlink,"history");
  ADD(Clone,"clone");
  ADD(RdWiki,"readWiki");
  ADD(NewWiki,"createWiki");
  ADD(ApndWiki,"appendWiki");
  ADD(WrWiki,"editWiki");
  ADD(ModWiki,"moderateWiki");
  ADD(RdTkt,"readTicket");
  ADD(NewTkt,"createTicket");
  ADD(ApndTkt,"appendTicket");
  ADD(WrTkt,"editTicket");
  ADD(ModTkt,"moderateTicket");
  ADD(Attach,"attachFile");
  ADD(TktFmt,"createTicketReport");
  ADD(RdAddr,"readPrivate");
  ADD(Zip,"zip");
  ADD(Private,"xferPrivate");
  ADD(WrUnver,"writeUnversioned");
  ADD(RdForum,"readForum");
  ADD(WrForum,"writeForum");
  ADD(WrTForum,"writeTrustedForum");
  ADD(ModForum,"moderateForum");
  ADD(AdminForum,"adminForum");
  ADD(EmailAlert,"emailAlert");
  ADD(Announce,"announce");
  ADD(Debug,"debug");
  ADD(Chat,"chat");
#undef ADD
  return payload;
}

/*
** Implementation of the /json/stat page/command.
**
*/
cson_value * json_page_stat(void){
  i64 t, fsize;
  int n, m;
  int full;
  enum { BufLen = 1000 };
  char zBuf[BufLen];
  cson_value * jv = NULL;
  cson_object * jo = NULL;
  cson_value * jv2 = NULL;
  cson_object * jo2 = NULL;
  char * zTmp = NULL;
  if( !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' permissions.");
    return NULL;
  }
  full = json_find_option_bool("full",NULL,"f",
              json_find_option_bool("verbose",NULL,"v",0));
#define SETBUF(O,K) cson_object_set(O, K, \
                                    cson_value_new_string(zBuf, strlen(zBuf)));

  jv = cson_value_new_object();
  jo = cson_value_get_object(jv);

  zTmp = db_get("project-name",NULL);
  cson_object_set(jo, "projectName", json_new_string(zTmp));
  fossil_free(zTmp);
  zTmp = db_get("project-description",NULL);
  cson_object_set(jo, "projectDescription", json_new_string(zTmp));
  fossil_free(zTmp);
  zTmp = NULL;
  fsize = file_size(g.zRepositoryName, ExtFILE);
  cson_object_set(jo, "repositorySize",
                  cson_value_new_integer((cson_int_t)fsize));

  if(full){
    n = db_int(0, "SELECT count(*) FROM blob");
    m = db_int(0, "SELECT count(*) FROM delta");
    cson_object_set(jo, "blobCount", cson_value_new_integer((cson_int_t)n));
    cson_object_set(jo, "deltaCount", cson_value_new_integer((cson_int_t)m));
    if( n>0 ){
      int a, b;
      Stmt q;
      db_prepare(&q, "SELECT total(size), avg(size), max(size)"
                 " FROM blob WHERE size>0");
      db_step(&q);
      t = db_column_int64(&q, 0);
      cson_object_set(jo, "uncompressedArtifactSize",
                      cson_value_new_integer((cson_int_t)t));
      cson_object_set(jo, "averageArtifactSize",
                      cson_value_new_integer((cson_int_t)db_column_int(&q, 1)));
      cson_object_set(jo, "maxArtifactSize",
                      cson_value_new_integer((cson_int_t)db_column_int(&q, 2)));
      db_finalize(&q);
      if( t/fsize < 5 ){
        b = 10;
        fsize /= 10;
      }else{
        b = 1;
      }
      a = t/fsize;
      sqlite3_snprintf(BufLen,zBuf, "%d:%d", a, b);
      SETBUF(jo, "compressionRatio");
    }
    n = db_int(0, "SELECT count(distinct mid) FROM mlink /*scan*/");
    cson_object_set(jo, "checkinCount", cson_value_new_integer((cson_int_t)n));
    n = db_int(0, "SELECT count(*) FROM filename /*scan*/");
    cson_object_set(jo, "fileCount", cson_value_new_integer((cson_int_t)n));
    n = db_int(0, "SELECT count(*) FROM tag  /*scan*/"
               " WHERE +tagname GLOB 'wiki-*'");
    cson_object_set(jo, "wikiPageCount", cson_value_new_integer((cson_int_t)n));
    n = db_int(0, "SELECT count(*) FROM tag  /*scan*/"
               " WHERE +tagname GLOB 'tkt-*'");
    cson_object_set(jo, "ticketCount", cson_value_new_integer((cson_int_t)n));
  }/*full*/
  n = db_int(0, "SELECT julianday('now') - (SELECT min(mtime) FROM event)"
                " + 0.99");
  cson_object_set(jo, "ageDays", cson_value_new_integer((cson_int_t)n));
  cson_object_set(jo, "ageYears", cson_value_new_double(n/365.2425));
  sqlite3_snprintf(BufLen, zBuf, db_get("project-code",""));
  SETBUF(jo, "projectCode");
  cson_object_set(jo, "compiler",
                  cson_value_new_string(COMPILER_NAME, strlen(COMPILER_NAME)));

  jv2 = cson_value_new_object();
  jo2 = cson_value_get_object(jv2);
  cson_object_set(jo, "sqlite", jv2);
  sqlite3_snprintf(BufLen, zBuf, "%.19s [%.10s] (%s)", sqlite3_sourceid(),
                   &sqlite3_sourceid()[20], sqlite3_libversion());
  SETBUF(jo2, "version");
  cson_object_set(jo2, "pageCount", cson_value_new_integer(
                  (cson_int_t)db_int(0, "PRAGMA repository.page_count")));
  cson_object_set(jo2, "pageSize", cson_value_new_integer(
                  (cson_int_t)db_int(0, "PRAGMA repository.page_size")));
  cson_object_set(jo2, "freeList", cson_value_new_integer(
                  (cson_int_t)db_int(0, "PRAGMA repository.freelist_count")));
  sqlite3_snprintf(BufLen, zBuf, "%s", db_text(0,"PRAGMA repository.encoding"));
  SETBUF(jo2, "encoding");
  sqlite3_snprintf(BufLen, zBuf, "%s",
                   db_text(0, "PRAGMA repository.journal_mode"));
  cson_object_set(jo2, "journalMode", *zBuf ?
                 cson_value_new_string(zBuf, strlen(zBuf)) : cson_value_null());
  return jv;
#undef SETBUF
}




/*
** Creates a comma-separated list of command names
** taken from zPages. zPages must be an array of objects
** whose final entry MUST have a NULL name value or results
** are undefined.
**
** The list is appended to pOut. The number of items (not bytes)
** appended are returned. If filterByMode is non-0 then the result
** list will contain only commands which are able to run in the
** current run mode (CLI vs. HTTP).
*/
static int json_pagedefs_to_string(JsonPageDef const * zPages,
                                   Blob * pOut, int filterByMode){
  int i = 0;
  for( ; zPages->name; ++zPages, ++i ){
    if(filterByMode){
      if(g.isHTTP && zPages->runMode < 0) continue;
      else if(zPages->runMode > 0) continue;
    }
    blob_append(pOut, zPages->name, -1);
    if((zPages+1)->name){
      blob_append(pOut, ", ",2);
    }
  }
  return i;
}

/*
** Creates an error message using zErrPrefix and the given array of
** JSON command definitions, and sets the g.json error state to
** reflect FSL_JSON_E_MISSING_ARGS. If zErrPrefix is NULL then
** some default is used (e.g. "Try one of: "). If it is "" then
** no prefix is used.
**
** The intention is to provide the user (via the response.resultText)
** a list of available commands/subcommands.
**
*/
void json_dispatch_missing_args_err( JsonPageDef const * pCommands,
                                     char const * zErrPrefix ){
  Blob cmdNames = empty_blob;
  blob_init(&cmdNames,NULL,0);
  if( !zErrPrefix ) {
    zErrPrefix = "Try one of: ";
  }
  blob_append( &cmdNames, zErrPrefix, strlen(zErrPrefix) );
  json_pagedefs_to_string(pCommands, &cmdNames, 1);
  json_set_err(FSL_JSON_E_MISSING_ARGS, "%s",
               blob_str(&cmdNames));
  blob_reset(&cmdNames);
}

cson_value * json_page_dispatch_helper(JsonPageDef const * pages){
  JsonPageDef const * def;
  char const * cmd = json_command_arg(1+g.json.dispatchDepth);
  assert( NULL != pages );
  if( ! cmd ){
    json_dispatch_missing_args_err(pages,
                                   "No subcommand specified. "
                                   "Try one of: ");
    return NULL;
  }
  def = json_handler_for_name( cmd, pages );
  if(!def){
    json_set_err(FSL_JSON_E_UNKNOWN_COMMAND,
                 "Unknown subcommand: %s", cmd);
    return NULL;
  }
  else{
    ++g.json.dispatchDepth;
    return (*def->func)();
  }
}


/*
** Impl of /json/rebuild. Requires admin privileges.
*/
static cson_value * json_page_rebuild(void){
  if( !g.perm.Admin ){
    json_set_err(FSL_JSON_E_DENIED,"Requires 'a' privileges.");
    return NULL;
  }else{
  /* Reminder: the db_xxx() ops "should" fail via the fossil core
     error handlers, which will cause a JSON error and exit(). i.e. we
     don't handle the errors here. TODO: confirm that all these db
     routine fail gracefully in JSON mode.

     On large repos (e.g. fossil's) this operation is likely to take
     longer than the client timeout, which will cause it to fail (but
     it's sqlite3, so it'll fail gracefully).
  */
    db_close(1);
    db_open_repository(g.zRepositoryName);
    db_begin_transaction();
    rebuild_db(0, 0);
    db_end_transaction(0);
    return NULL;
  }
}

/*
** Impl of /json/g. Requires admin/setup rights.
*/
static cson_value * json_page_g(void){
  if(!g.perm.Admin || !g.perm.Setup){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'a' or 's' privileges.");
    return NULL;
  }
  return json_g_to_json();
}

/* Impl in json_login.c. */
cson_value * json_page_anon_password(void);
/* Impl in json_artifact.c. */
cson_value * json_page_artifact(void);
/* Impl in json_branch.c. */
cson_value * json_page_branch(void);
/* Impl in json_diff.c. */
cson_value * json_page_diff(void);
/* Impl in json_dir.c. */
cson_value * json_page_dir(void);
/* Impl in json_login.c. */
cson_value * json_page_login(void);
/* Impl in json_login.c. */
cson_value * json_page_logout(void);
/* Impl in json_query.c. */
cson_value * json_page_query(void);
/* Impl in json_report.c. */
cson_value * json_page_report(void);
/* Impl in json_tag.c. */
cson_value * json_page_tag(void);
/* Impl in json_user.c. */
cson_value * json_page_user(void);
/* Impl in json_config.c. */
cson_value * json_page_config(void);
/* Impl in json_finfo.c. */
cson_value * json_page_finfo(void);
/* Impl in json_status.c. */
cson_value * json_page_status(void);

/*
** Mapping of names to JSON pages/commands.  Each name is a subpath of
** /json (in CGI mode) or a subcommand of the json command in CLI mode
*/
static const JsonPageDef JsonPageDefs[] = {
/* please keep alphabetically sorted (case-insensitive)
   for maintenance reasons. */
{"anonymousPassword", json_page_anon_password, 0},
{"artifact", json_page_artifact, 0},
{"branch", json_page_branch,0},
{"cap", json_page_cap, 0},
{"config", json_page_config, 0 },
{"diff", json_page_diff, 0},
{"dir", json_page_dir, 0},
{"finfo", json_page_finfo, 0},
{"g", json_page_g, 0},
{"HAI",json_page_version,0},
{"login",json_page_login,0},
{"logout",json_page_logout,0},
{"query",json_page_query,0},
{"rebuild",json_page_rebuild,0},
{"report", json_page_report, 0},
{"resultCodes", json_page_resultCodes,0},
{"settings",json_page_settings,0},
{"stat",json_page_stat,0},
{"status", json_page_status, 0},
{"tag", json_page_tag,0},
/*{"ticket", json_page_nyi,0},*/
{"timeline", json_page_timeline,0},
{"user",json_page_user,0},
{"version",json_page_version,0},
{"whoami",json_page_whoami,0},
{"wiki",json_page_wiki,0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};

/*
** Internal helper for json_cmd_top() and json_page_top().
**
** Searches JsonPageDefs for a command with the given name. If found,
** it is used to generate and output a JSON response. If not found, it
** generates a JSON-style error response. Returns 0 on success, non-0
** on error. On error it will set g.json's error state.
*/
static int json_dispatch_root_command( char const * zCommand ){
  int rc = 0;
  cson_value * payload = NULL;
  JsonPageDef const * pageDef = NULL;
  pageDef = json_handler_for_name(zCommand,&JsonPageDefs[0]);
  if( ! pageDef ){
    rc = FSL_JSON_E_UNKNOWN_COMMAND;
    json_set_err( rc, "Unknown command: %s", zCommand );
  }else if( pageDef->runMode < 0 /*CLI only*/){
    rc = FSL_JSON_E_WRONG_MODE;
  }else if( (g.isHTTP && (pageDef->runMode < 0 /*CLI only*/))
            ||
            (!g.isHTTP && (pageDef->runMode > 0 /*HTTP only*/))
            ){
    rc = FSL_JSON_E_WRONG_MODE;
  }
  else{
    rc = 0;
    g.json.dispatchDepth = 1;
    payload = (*pageDef->func)();
  }
  payload = json_create_response(rc, NULL, payload);
  json_send_response(payload);
  cson_value_free(payload);
  return rc;
}

#ifdef FOSSIL_ENABLE_JSON
/* dupe ifdef needed for mkindex */
/*
** WEBPAGE: json
**
** Pages under /json/... must be entered into JsonPageDefs.
** This function dispatches them, and is the HTTP equivalent of
** json_cmd_top().
*/
void json_page_top(void){
  char const * zCommand;
  assert(g.json.gc.a && "json_bootstrap_early() was not called!");
  assert(g.json.cmd.a && "json_bootstrap_late() was not called!");
  zCommand = json_command_arg(1);
  if(!zCommand || !*zCommand){
    json_dispatch_missing_args_err( JsonPageDefs,
                                    "No command (sub-path) specified."
                                    " Try one of: ");
    return;
  }
  json_dispatch_root_command( zCommand );
}
#endif /* FOSSIL_ENABLE_JSON for mkindex */

#ifdef FOSSIL_ENABLE_JSON
/* dupe ifdef needed for mkindex */
/*
** This function dispatches json commands and is the CLI equivalent of
** json_page_top().
**
** COMMAND: json
**
** Usage: %fossil json SUBCOMMAND ?OPTIONS?
**
** In CLI mode, the -R REPO common option is supported. Due to limitations
** in the argument dispatching code, any -FLAGS must come after the final
** sub- (or subsub-) command.
**
** The -json-input FILE option can be used to read JSON data and process
** it like the HTTP interface would. For example:
**
**   %fossil json -json-input my.json
**
** The commands include:
**
**   anonymousPassword
**   artifact
**   branch
**   cap
**   config
**   diff
**   dir
**   g
**   login
**   logout
**   query
**   rebuild
**   report
**   resultCodes
**   stat
**   tag
**   timeline
**   user
**   version (alias: HAI)
**   whoami
**   wiki
**
** Run '%fossil json' without any subcommand to see the full list (but be
** aware that some listed might not yet be fully implemented).
**
*/
void json_cmd_top(void){
  char const * cmd = NULL;
  int rc = 0;
  memset( &g.perm, 0xff, sizeof(g.perm) )
    /* In CLI mode fossil does not use permissions
       and they all default to false. We enable them
       here because (A) fossil doesn't use them in local
       mode but (B) having them set gives us one less
       difference in the CLI/CGI/Server-mode JSON
       handling.
    */
    ;
  json_bootstrap_early();
  json_bootstrap_late();
  if( 2 > cson_array_length_get(g.json.cmd.a) ){
    goto usage;
  }
#if 0
  json_warn(FSL_JSON_W_ROW_TO_JSON_FAILED, "Just testing.");
  json_warn(FSL_JSON_W_ROW_TO_JSON_FAILED, "Just testing again.");
#endif
  cmd = json_command_arg(1);
  if( !cmd || !*cmd ){
    goto usage;
  }
  rc = json_dispatch_root_command( cmd );
  if(0 != rc){
    /* FIXME: we need a way of passing this error back
       up to the routine which called this callback.
       e.g. add g.errCode.
    */
    fossil_exit(1);
  }
  return;
  usage:
  {
    cson_value * payload;
    json_dispatch_missing_args_err( JsonPageDefs,
                                    "No subcommand specified."
                                    " Try one of: ");
    payload = json_create_response(0, NULL, NULL);
    json_send_response(payload);
    cson_value_free(payload);
    fossil_exit(1);
  }
}
#endif /* FOSSIL_ENABLE_JSON for mkindex */

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_artifact.c.


































































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_artifact.h"

#if INTERFACE
#include "json_detail.h"
#endif

/*
** Internal callback for /json/artifact handlers. rid refers to
** the rid of a given type of artifact, and each callback is
** specialized to return a JSON form of one type of artifact.
**
** Implementations may assert() that rid refers to requested artifact
** type, since mismatches in the artifact types come from
** json_page_artifact() as opposed to client data.
**
** The pParent parameter points to the response payload object.  It
** _may_ be used to populate "top-level" information in the response
** payload, but normally this is neither necessary nor desired.
*/
typedef cson_value * (*artifact_f)( cson_object * pParent, int rid );

/*
** Internal per-artifact-type dispatching helper.
*/
typedef struct ArtifactDispatchEntry {
  /**
     Artifact type name, e.g. "checkin", "ticket", "wiki".
   */
  char const * name;

  /**
     JSON construction callback. Creates the contents for the
     payload.artifact property of /json/artifact responses.
  */
  artifact_f func;
} ArtifactDispatchEntry;


/*
** Generates a JSON Array reference holding the parent UUIDs (as strings).
** If it finds no matches then it returns NULL (OOM is a fatal error).
**
** Returned value is NULL or an Array owned by the caller.
*/
cson_value * json_parent_uuids_for_ci( int rid ){
  Stmt q = empty_Stmt;
  cson_array * pParents = NULL;
  db_prepare( &q,
              "SELECT uuid FROM plink, blob"
              " WHERE plink.cid=%d AND blob.rid=plink.pid"
              " ORDER BY plink.isprim DESC",
              rid );
  while( SQLITE_ROW==db_step(&q) ){
    if(!pParents) {
      pParents = cson_new_array();
    }
    cson_array_append( pParents, cson_sqlite3_column_to_value( q.pStmt, 0 ) );
  }
  db_finalize(&q);
  return cson_array_value(pParents);
}

/*
** Generates an artifact Object for the given rid,
** which must refer to a Check-in.
**
** Returned value is NULL or an Object owned by the caller.
*/
cson_value * json_artifact_for_ci( int rid, char showFiles ){
  cson_value * v = NULL;
  Stmt q = empty_Stmt;
  static cson_value * eventTypeLabel = NULL;
  if(!eventTypeLabel){
    eventTypeLabel = json_new_string("checkin");
    json_gc_add("$EVENT_TYPE_LABEL(commit)", eventTypeLabel);
  }

  db_prepare(&q,
             "SELECT b.uuid, "
             " cast(strftime('%%s',e.mtime) as int), "
             " strftime('%%s',e.omtime),"
             " e.user, "
             " e.comment"
             " FROM blob b, event e"
             " WHERE b.rid=%d"
             "   AND e.objid=%d",
             rid, rid
             );
  if( db_step(&q)==SQLITE_ROW ){
    cson_object * o;
    cson_value * tmpV = NULL;
    const char *zUuid = db_column_text(&q, 0);
    const char *zUser;
    const char *zComment;
    char * zEUser, * zEComment;
    i64 mtime, omtime;
    v = cson_value_new_object();
    o = cson_value_get_object(v);
#define SET(K,V) cson_object_set(o,(K), (V))
    SET("type", eventTypeLabel );
    SET("uuid",json_new_string(zUuid));
    SET("isLeaf", cson_value_new_bool(is_a_leaf(rid)));

    mtime = db_column_int64(&q,1);
    SET("timestamp",json_new_int(mtime));
    omtime = db_column_int64(&q,2);
    if(omtime && (omtime!=mtime)){
      SET("originTime",json_new_int(omtime));
    }

    zUser = db_column_text(&q,3);
    zEUser = db_text(0,
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                   TAG_USER, rid);
    if(zEUser){
      SET("user", json_new_string(zEUser));
      if(0!=fossil_strcmp(zEUser,zUser)){
        SET("originUser",json_new_string(zUser));
      }
      free(zEUser);
    }else{
      SET("user",json_new_string(zUser));
    }

    zComment = db_column_text(&q,4);
    zEComment = db_text(0,
                   "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                   TAG_COMMENT, rid);
    if(zEComment){
      SET("comment",json_new_string(zEComment));
      if(0 != fossil_strcmp(zEComment,zComment)){
        SET("originComment", json_new_string(zComment));
      }
      free(zEComment);
    }else{
      SET("comment",json_new_string(zComment));
    }

    tmpV = json_parent_uuids_for_ci(rid);
    if(tmpV){
      SET("parents", tmpV);
    }

    tmpV = json_tags_for_checkin_rid(rid,0);
    if(tmpV){
      SET("tags",tmpV);
    }

    if( showFiles ){
      tmpV = json_get_changed_files(rid, 1);
      if(tmpV){
        SET("files",tmpV);
      }
    }

#undef SET
  }
  db_finalize(&q);
  return v;
}

/*
** Very incomplete/incorrect impl of /json/artifact/TICKET_ID.
*/
cson_value * json_artifact_ticket( cson_object * zParent, int rid ){
  cson_object * pay = NULL;
  Manifest *pTktChng = NULL;
  static cson_value * eventTypeLabel = NULL;
  if(! g.perm.RdTkt ){
    g.json.resultCode = FSL_JSON_E_DENIED;
    return NULL;
  }
  if(!eventTypeLabel){
    eventTypeLabel = json_new_string("ticket");
    json_gc_add("$EVENT_TYPE_LABEL(ticket)", eventTypeLabel);
  }

  pTktChng = manifest_get(rid, CFTYPE_TICKET, 0);
  if( pTktChng==0 ){
    g.json.resultCode = FSL_JSON_E_MANIFEST_READ_FAILED;
    return NULL;
  }
  pay = cson_new_object();
  cson_object_set(pay, "eventType", eventTypeLabel );
  cson_object_set(pay, "uuid", json_new_string(pTktChng->zTicketUuid));
  cson_object_set(pay, "user", json_new_string(pTktChng->zUser));
  cson_object_set(pay, "timestamp", json_julian_to_timestamp(pTktChng->rDate));
  manifest_destroy(pTktChng);
  return cson_object_value(pay);
}

/*
** Sub-impl of /json/artifact for check-ins.
*/
static cson_value * json_artifact_ci( cson_object * zParent, int rid ){
  if(!g.perm.Read){
    json_set_err( FSL_JSON_E_DENIED,
                  "Viewing check-ins requires 'o' privileges." );
    return NULL;
  }else{
    cson_value * artV = json_artifact_for_ci(rid, 1);
    cson_object * art = cson_value_get_object(artV);
    if(art){
      cson_object_merge( zParent, art, CSON_MERGE_REPLACE );
      cson_free_object(art);
    }
    return cson_object_value(zParent);
  }
}

/*
** Internal mapping of /json/artifact/FOO commands/callbacks.
*/
static ArtifactDispatchEntry ArtifactDispatchList[] = {
{"checkin", json_artifact_ci},
{"file", json_artifact_file},
/*{"tag", NULL}, //impl missing */
/*{"technote", NULL}, //impl missing */
{"ticket", json_artifact_ticket},
{"wiki", json_artifact_wiki},
/* Final entry MUST have a NULL name. */
{NULL,NULL}
};

/*
** Internal helper which returns:
**
** If the "format" (CLI: -f) flag is set function returns the same as
** json_wiki_get_content_format_flag(), else it returns true (non-0)
** if either the includeContent (HTTP) or -content|-c boolean flags
** (CLI) are set.
*/
static int json_artifact_get_content_format_flag(void){
  enum { MagicValue = -9 };
  int contentFormat = json_wiki_get_content_format_flag(MagicValue);
  if(MagicValue == contentFormat){
    contentFormat = json_find_option_bool("includeContent",
                                     "content","c",0) /* deprecated */ ? -1 : 0;
  }
  return contentFormat;
}

extern int json_wiki_get_content_format_flag(int defaultValue) /* json_wiki.c*/;

cson_value * json_artifact_wiki(cson_object * zParent, int rid){
  if( ! g.perm.RdWiki ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'j' privileges.");
    return NULL;
  }else{
    enum { MagicValue = -9 };
    int const contentFormat = json_artifact_get_content_format_flag();
    return json_get_wiki_page_by_rid(rid, contentFormat);
  }
}

/*
** Internal helper for routines which add a "status" flag to file
** artifact data. isNew and isDel should be the "is this object new?"
** and "is this object removed?" flags of the underlying query.  This
** function returns a static string from the set (added, removed,
** modified), depending on the combination of the two args.
**
** Reminder to self: (mlink.pid==0) AS isNew, (mlink.fid==0) AS isDel
*/
char const * json_artifact_status_to_string( char isNew, char isDel ){
  return isNew
    ? "added"
    : (isDel
       ? "removed"
       : "modified");
}

cson_value * json_artifact_file(cson_object * zParent, int rid){
  cson_object * pay = NULL;
  Stmt q = empty_Stmt;
  cson_array * checkin_arr = NULL;
  int contentFormat;
  i64 contentSize = -1;
  char * parentUuid;
  if( ! g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' privileges.");
    return NULL;
  }

  pay = zParent;

  contentFormat = json_artifact_get_content_format_flag();
  if( 0 != contentFormat ){
    Blob content = empty_blob;
    const char *zMime;
    char const * zFormat = (contentFormat<1) ? "raw" : "html";
    content_get(rid, &content);
    zMime = mimetype_from_content(&content);
    cson_object_set(zParent, "contentType",
                    json_new_string(zMime ? zMime : "text/plain"));
    if(!zMime){/* text/plain */
      if(0 < blob_size(&content)){
        if( 0 < contentFormat ){/*HTML-size it*/
          Blob html = empty_blob;
          wiki_convert(&content, &html, 0);
          assert( blob_size(&content) < blob_size(&html) );
          blob_swap( &html, &content );
          assert( blob_size(&content) > blob_size(&html) );
          blob_reset( &html );
        }/*else as-is*/
      }
      cson_object_set(zParent, "content",
                      cson_value_new_string(blob_str(&content),
                                            (unsigned int)blob_size(&content)));
    }/*else binary: ignore*/
    contentSize = blob_size(&content);
    cson_object_set(zParent, "contentSize", json_new_int(contentSize) );
    cson_object_set(zParent, "contentFormat", json_new_string(zFormat) );
    blob_reset(&content);
  }
  contentSize = db_int64(-1, "SELECT size FROM blob WHERE rid=%d", rid);
  assert( -1 < contentSize );
  cson_object_set(zParent, "size", json_new_int(contentSize) );

  parentUuid = db_text(NULL,
                       "SELECT DISTINCT p.uuid "
                       "FROM blob p, blob f, mlink m "
                       "WHERE m.pid=p.rid "
                       "AND m.fid=f.rid "
                       "AND f.rid=%d",
                       rid
                       );
  if(parentUuid){
    cson_object_set( zParent, "parent", json_new_string(parentUuid) );
    fossil_free(parentUuid);
  }

  /* Find check-ins associated with this file... */
  db_prepare(&q,
      "SELECT filename.name AS name, "
      "  (mlink.pid==0) AS isNew,"
      "  (mlink.fid==0) AS isDel,"
      "  cast(strftime('%%s',event.mtime) as int) AS timestamp,"
      "  coalesce(event.ecomment,event.comment) as comment,"
      "  coalesce(event.euser,event.user) as user,"
#if 0
      "  a.size AS size," /* same for all check-ins. */
#endif
      "  b.uuid as checkin, "
#if 0
      "  mlink.mperm as mperm,"
#endif
      "  coalesce((SELECT value FROM tagxref"
                      "  WHERE tagid=%d AND tagtype>0 AND "
                      " rid=mlink.mid),'trunk') as branch"
      "  FROM mlink, filename, event, blob a, blob b"
      " WHERE filename.fnid=mlink.fnid"
      "   AND event.objid=mlink.mid"
      "   AND a.rid=mlink.fid"
      "   AND b.rid=mlink.mid"
      "   AND mlink.fid=%d"
      "   ORDER BY filename.name, event.mtime",
      TAG_BRANCH, rid
    );
  /* TODO: add a "state" flag for the file in each check-in,
     e.g. "modified", "new", "deleted".
   */
  checkin_arr = cson_new_array();
  cson_object_set(pay, "checkins", cson_array_value(checkin_arr));
  while( (SQLITE_ROW==db_step(&q) ) ){
    cson_object * row = cson_value_get_object(
                           cson_sqlite3_row_to_object(q.pStmt));
    /* FIXME: move this isNew/isDel stuff into an SQL CASE statement. */
    char const isNew = cson_value_get_bool(cson_object_get(row,"isNew"));
    char const isDel = cson_value_get_bool(cson_object_get(row,"isDel"));
    cson_object_set(row, "isNew", NULL);
    cson_object_set(row, "isDel", NULL);
    cson_object_set(row, "state", json_new_string(
                            json_artifact_status_to_string(isNew, isDel)));
    cson_array_append( checkin_arr, cson_object_value(row) );
  }
  db_finalize(&q);
  return cson_object_value(pay);
}

/*
** Impl of /json/artifact. This basically just determines the type of
** an artifact and forwards the real work to another function.
*/
cson_value * json_page_artifact(void){
  cson_object * pay = NULL;
  char const * zName = NULL;
  char const * zType = NULL;
  char const * zUuid = NULL;
  cson_value * entry = NULL;
  Blob uuid = empty_blob;
  int rc;
  int rid = 0;
  ArtifactDispatchEntry const * dispatcher = &ArtifactDispatchList[0];
  zName = json_find_option_cstr2("name", NULL, NULL, g.json.dispatchDepth+1);
  if(!zName || !*zName) {
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "Missing 'name' argument.");
    return NULL;
  }

  if( validate16(zName, strlen(zName)) ){
    if( db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'", zName) ){
      zType = "ticket";
      goto handle_entry;
    }
    if( db_exists("SELECT 1 FROM tag WHERE tagname GLOB 'event-%q*'", zName) ){
      zType = "tag";
      goto handle_entry;
    }
  }
  blob_set(&uuid,zName);
  rc = name_to_uuid(&uuid,-1,"*");
  /* FIXME: check for a filename if all else fails. */
  if(1==rc){
    g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND;
    goto error;
  }else if(2==rc){
    g.json.resultCode = FSL_JSON_E_AMBIGUOUS_UUID;
    goto error;
  }
  zUuid = blob_str(&uuid);
  rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", zUuid);
  if(0==rid){
    g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND;
    goto error;
  }

  if( db_exists("SELECT 1 FROM mlink WHERE mid=%d", rid)
      || db_exists("SELECT 1 FROM plink WHERE cid=%d", rid)
      || db_exists("SELECT 1 FROM plink WHERE pid=%d", rid)){
    zType = "checkin";
    goto handle_entry;
  }else if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)"
                      " WHERE rid=%d AND tagname LIKE 'wiki-%%'", rid) ){
    zType = "wiki";
    goto handle_entry;
  }else if( db_exists("SELECT 1 FROM tagxref JOIN tag USING(tagid)"
                      " WHERE rid=%d AND tagname LIKE 'tkt-%%'", rid) ){
    zType = "ticket";
    goto handle_entry;
  }else if ( db_exists("SELECT 1 FROM mlink WHERE fid = %d", rid) ){
    zType = "file";
    goto handle_entry;
  }else{
    g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND;
    goto error;
  }

  error:
  assert( 0 != g.json.resultCode );
  goto veryend;

  handle_entry:
  pay = cson_new_object();
  assert( (NULL != zType) && "Internal dispatching error." );
  for( ; dispatcher->name; ++dispatcher ){
    if(0!=fossil_strcmp(dispatcher->name, zType)){
      continue;
    }else{
      entry = (*dispatcher->func)(pay, rid);
      break;
    }
  }
  if(entry==0){
    g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND
      /* This is not quite right. We need a new result code
         for this case. */;
    g.zErrMsg = mprintf("Missing implementation for "
                        "artifacts of this type.");
    goto error;
  }
  if(!g.json.resultCode){
    assert( NULL != entry );
    assert( NULL != zType );
    cson_object_set( pay, "type", json_new_string(zType) );
    cson_object_set( pay, "uuid", json_new_string(zUuid) );
    /*cson_object_set( pay, "name", json_new_string(zName ? zName : zUuid) );*/
    /*cson_object_set( pay, "rid", cson_value_new_integer(rid) );*/
    if(cson_value_is_object(entry) && (cson_value_get_object(entry) != pay)){
      cson_object_set(pay, "artifact", entry);
    }
  }
  veryend:
  blob_reset(&uuid);
  if(g.json.resultCode && pay){
    cson_free_object(pay);
    pay = NULL;
  }
  return cson_object_value(pay);
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_branch.c.

































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_branch.h"

#if INTERFACE
#include "json_detail.h"
#endif


static cson_value * json_branch_list(void);
static cson_value * json_branch_create(void);
/*
** Mapping of /json/branch/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Branch[] = {
{"create", json_branch_create, 0},
{"list", json_branch_list, 0},
{"new", json_branch_create, -1/* for compat with non-JSON branch command.*/},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};

/*
** Implements the /json/branch family of pages/commands. Far from
** complete.
**
*/
cson_value * json_page_branch(void){
  return json_page_dispatch_helper(&JsonPageDefs_Branch[0]);
}

/*
** Impl for /json/branch/list
**
**
** CLI mode options:
**
**  -r|--range X, where X is one of (open,closed,all)
**    (only the first letter is significant, default=open)
**  -a (same as --range a)
**  -c (same as --range c)
**
** HTTP mode options:
**
** "range" GET/POST.payload parameter. FIXME: currently we also use
** POST, but really want to restrict this to POST.payload.
*/
static cson_value * json_branch_list(void){
  cson_value * payV;
  cson_object * pay;
  cson_value * listV;
  cson_array * list;
  char const * range = NULL;
  int branchListFlags = BRL_OPEN_ONLY;
  char * sawConversionError = NULL;
  Stmt q = empty_Stmt;
  if( !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' permissions.");
    return NULL;
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  listV = cson_value_new_array();
  list = cson_value_get_array(listV);
  if(fossil_has_json()){
    range = json_getenv_cstr("range");
  }

  range = json_find_option_cstr("range",NULL,"r");
  if((!range||!*range) && !g.isHTTP){
    range = find_option("all","a",0);
    if(range && *range){
      range = "a";
    }else{
      range = find_option("closed","c",0);
      if(range&&*range){
        range = "c";
      }
    }
  }

  if(!range || !*range){
    range = "o";
  }
  /* Normalize range values... */
  switch(*range){
    case 'c':
      range = "closed";
      branchListFlags = BRL_CLOSED_ONLY;
      break;
    case 'a':
      range = "all";
      branchListFlags = BRL_BOTH;
      break;
    default:
      range = "open";
      branchListFlags = BRL_OPEN_ONLY;
      break;
  };
  cson_object_set(pay,"range",json_new_string(range));

  if( g.localOpen ){ /* add "current" property (branch name). */
    int vid = db_lget_int("checkout", 0);
    char const * zCurrent = vid
      ? db_text(0, "SELECT value FROM tagxref"
                " WHERE rid=%d AND tagid=%d",
                vid, TAG_BRANCH)
      : 0;
    if(zCurrent){
      cson_object_set(pay,"current",json_new_string(zCurrent));
    }
  }


  branch_prepare_list_query(&q, branchListFlags, 0, 0, 0); /* Allow a user? */
  cson_object_set(pay,"branches",listV);
  while((SQLITE_ROW==db_step(&q))){
    cson_value * v = cson_sqlite3_column_to_value(q.pStmt,0);
    if(v){
      cson_array_append(list,v);
    }else if(!sawConversionError){
      sawConversionError = mprintf("Column-to-json failed @ %s:%d",
                                   __FILE__,__LINE__);
    }
  }
  if( sawConversionError ){
    json_warn(FSL_JSON_W_COL_TO_JSON_FAILED,"%s",sawConversionError);
    free(sawConversionError);
  }
  db_finalize(&q);
  return payV;
}

/*
** Parameters for the create-branch operation.
*/
typedef struct BranchCreateOptions{
  char const * zName;
  char const * zBasis;
  char const * zColor;
  int isPrivate;
  /**
     Might be set to an error string by
     json_branch_new().
   */
  char const * rcErrMsg;
} BranchCreateOptions;

/*
** Tries to create a new branch based on the options set in zOpt. If
** an error is encountered, zOpt->rcErrMsg _might_ be set to a
** descriptive string and one of the FossilJsonCodes values will be
** returned. Or fossil_fatal() (or similar) might be called, exiting
** the app.
**
** On success 0 is returned and if zNewRid is not NULL then the rid of
** the new branch is assigned to it.
**
** If zOpt->isPrivate is 0 but the parent branch is private,
** zOpt->isPrivate will be set to a non-zero value and the new branch
** will be private.
*/
static int json_branch_new(BranchCreateOptions * zOpt,
                           int *zNewRid){
  /* Mostly copied from branch.c:branch_new(), but refactored a small
     bit to not produce output or interact with the user. The
     down-side to that is that we dropped the gpg-signing. It was
     either that or abort the creation if we couldn't sign. We can't
     sign over HTTP mode, anyway.
  */
  char const * zBranch = zOpt->zName;
  char const * zBasis = zOpt->zBasis;
  char const * zColor = zOpt->zColor;
  int rootid;            /* RID of the root check-in - what we branch off of */
  int brid;              /* RID of the branch check-in */
  int i;                 /* Loop counter */
  char *zUuid;           /* Artifact ID of origin */
  Stmt q;                /* Generic query */
  char *zDate;           /* Date that branch was created */
  char *zComment;        /* Check-in comment for the new branch */
  Blob branch;           /* manifest for the new branch */
  Manifest *pParent;     /* Parsed parent manifest */
  Blob mcksum;           /* Self-checksum on the manifest */

  /* fossil branch new name */
  if( zBranch==0 || zBranch[0]==0 ){
    zOpt->rcErrMsg = "Branch name may not be null/empty.";
    return FSL_JSON_E_INVALID_ARGS;
  }
  if( db_exists(
        "SELECT 1 FROM tagxref"
        " WHERE tagtype>0"
        "   AND tagid=(SELECT tagid FROM tag WHERE tagname='sym-%q')",
        zBranch)!=0 ){
    zOpt->rcErrMsg = "Branch already exists.";
    return FSL_JSON_E_RESOURCE_ALREADY_EXISTS;
  }

  db_begin_transaction();
  rootid = name_to_typed_rid(zBasis, "ci");
  if( rootid==0 ){
    zOpt->rcErrMsg = "Basis branch not found.";
    return FSL_JSON_E_RESOURCE_NOT_FOUND;
  }

  pParent = manifest_get(rootid, CFTYPE_MANIFEST, 0);
  if( pParent==0 ){
    zOpt->rcErrMsg = "Could not read parent manifest.";
    return FSL_JSON_E_UNKNOWN;
  }

  /* Create a manifest for the new branch */
  blob_zero(&branch);
  if( pParent->zBaseline ){
    blob_appendf(&branch, "B %s\n", pParent->zBaseline);
  }
  zComment = mprintf("Create new branch named \"%s\" "
                     "from \"%s\".", zBranch, zBasis);
  blob_appendf(&branch, "C %F\n", zComment);
  free(zComment);
  zDate = date_in_standard_format("now");
  blob_appendf(&branch, "D %s\n", zDate);
  free(zDate);

  /* Copy all of the content from the parent into the branch */
  for(i=0; i<pParent->nFile; ++i){
    blob_appendf(&branch, "F %F", pParent->aFile[i].zName);
    if( pParent->aFile[i].zUuid ){
      blob_appendf(&branch, " %s", pParent->aFile[i].zUuid);
      if( pParent->aFile[i].zPerm && pParent->aFile[i].zPerm[0] ){
        blob_appendf(&branch, " %s", pParent->aFile[i].zPerm);
      }
    }
    blob_append(&branch, "\n", 1);
  }
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rootid);
  blob_appendf(&branch, "P %s\n", zUuid);
  free(zUuid);
  if( pParent->zRepoCksum ){
    blob_appendf(&branch, "R %s\n", pParent->zRepoCksum);
  }
  manifest_destroy(pParent);

  /* Add the symbolic branch name and the "branch" tag to identify
  ** this as a new branch */
  if( content_is_private(rootid) ) zOpt->isPrivate = 1;
  if( zColor!=0 ){
    blob_appendf(&branch, "T *bgcolor * %F\n", zColor);
  }
  blob_appendf(&branch, "T *branch * %F\n", zBranch);
  blob_appendf(&branch, "T *sym-%F *\n", zBranch);

  /* Cancel all other symbolic tags */
  db_prepare(&q,
      "SELECT tagname FROM tagxref, tag"
      " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
      "   AND tagtype>0 AND tagname GLOB 'sym-*'"
      " ORDER BY tagname",
      rootid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTag = db_column_text(&q, 0);
    blob_appendf(&branch, "T -%F *\n", zTag);
  }
  db_finalize(&q);

  blob_appendf(&branch, "U %F\n", g.zLogin);
  md5sum_blob(&branch, &mcksum);
  blob_appendf(&branch, "Z %b\n", &mcksum);

  brid = content_put_ex(&branch, 0, 0, 0, zOpt->isPrivate);
  if( brid==0 ){
    fossil_panic("Problem committing manifest: %s", g.zErrMsg);
  }
  db_add_unsent(brid);
  if( manifest_crosslink(brid, &branch, MC_PERMIT_HOOKS)==0 ){
    fossil_panic("%s", g.zErrMsg);
  }
  assert( blob_is_reset(&branch) );
  content_deltify(rootid, &brid, 1, 0);
  if( zNewRid ){
    *zNewRid = brid;
  }

  /* Commit */
  db_end_transaction(0);

  return 0;
}


/*
** Impl of /json/branch/create.
*/
static cson_value * json_branch_create(void){
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  int rc = 0;
  BranchCreateOptions opt;
  char * zUuid = NULL;
  int rid = 0;
  if( !g.perm.Write ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'i' permissions.");
    return NULL;
  }
  memset(&opt,0,sizeof(BranchCreateOptions));
  if(fossil_has_json()){
    opt.zName = json_getenv_cstr("name");
  }

  if(!opt.zName){
    opt.zName = json_command_arg(g.json.dispatchDepth+1);
  }

  if(!opt.zName){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "'name' parameter was not specified." );
    return NULL;
  }

  opt.zColor = json_find_option_cstr("bgColor","bgcolor",NULL);
  opt.zBasis = json_find_option_cstr("basis",NULL,NULL);
  if(!opt.zBasis && !g.isHTTP){
    opt.zBasis = json_command_arg(g.json.dispatchDepth+2);
  }
  if(!opt.zBasis){
    opt.zBasis = "trunk";
  }
  opt.isPrivate = json_find_option_bool("private",NULL,NULL,-1);
  if(-1==opt.isPrivate){
    if(!g.isHTTP){
      opt.isPrivate = (NULL != find_option("private","",0));
    }else{
      opt.isPrivate = 0;
    }
  }

  rc = json_branch_new( &opt, &rid );
  if(rc){
    json_set_err(rc, "%s", opt.rcErrMsg);
    goto error;
  }
  assert(0 != rid);
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);

  cson_object_set(pay,"name",json_new_string(opt.zName));
  cson_object_set(pay,"basis",json_new_string(opt.zBasis));
  cson_object_set(pay,"rid",json_new_int(rid));
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  cson_object_set(pay,"uuid", json_new_string(zUuid));
  cson_object_set(pay, "isPrivate", cson_value_new_bool(opt.isPrivate));
  free(zUuid);
  if(opt.zColor){
    cson_object_set(pay,"bgColor",json_new_string(opt.zColor));
  }

  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  cson_value_free(payV);
  payV = NULL;
  ok:
  return payV;
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_config.c.











































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_config.h"

#if INTERFACE
#include "json_detail.h"
#endif

static cson_value * json_config_get(void);
static cson_value * json_config_save(void);

/*
** Mapping of /json/config/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Config[] = {
{"get", json_config_get, 0},
{"save", json_config_save, 0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};

static cson_value * json_settings_get(void);
static cson_value * json_settings_set(void);
/*
** Mapping of /json/settings/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Settings[] = {
{"get", json_settings_get, 0},
{"set", json_settings_set, 0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};


/*
** Implements the /json/config family of pages/commands.
**
*/
cson_value * json_page_config(void){
  return json_page_dispatch_helper(&JsonPageDefs_Config[0]);
}

/*
** Implements the /json/settings family of pages/commands.
**
*/
cson_value * json_page_settings(void){
  return json_page_dispatch_helper(&JsonPageDefs_Settings[0]);
}


/*
** JSON-internal mapping of config options to config groups.  This is
** mostly a copy of the config options in configure.c, but that data
** is private and cannot be re-used directly here.
*/
static const struct JsonConfigProperty {
  char const * name;
  int groupMask;
} JsonConfigProperties[] = {
{ "css",                    CONFIGSET_CSS  },
{ "header",                 CONFIGSET_SKIN },
{ "mainmenu",               CONFIGSET_SKIN },
{ "footer",                 CONFIGSET_SKIN },
{ "details",                CONFIGSET_SKIN },
{ "js",                     CONFIGSET_SKIN },
{ "default-skin",           CONFIGSET_SKIN },
{ "logo-mimetype",          CONFIGSET_SKIN },
{ "logo-image",             CONFIGSET_SKIN },
{ "background-mimetype",    CONFIGSET_SKIN },
{ "background-image",       CONFIGSET_SKIN },
{ "icon-mimetype",          CONFIGSET_SKIN },
{ "icon-image",             CONFIGSET_SKIN },
{ "timeline-block-markup",  CONFIGSET_SKIN },
{ "timeline-date-format",   CONFIGSET_SKIN },
{ "timeline-default-style", CONFIGSET_SKIN },
{ "timeline-dwelltime",     CONFIGSET_SKIN },
{ "timeline-closetime",     CONFIGSET_SKIN },
{ "timeline-hard-newlines", CONFIGSET_SKIN },
{ "timeline-max-comment",   CONFIGSET_SKIN },
{ "timeline-plaintext",     CONFIGSET_SKIN },
{ "timeline-truncate-at-blank", CONFIGSET_SKIN },
{ "timeline-tslink-info",   CONFIGSET_SKIN },
{ "timeline-utc",           CONFIGSET_SKIN },
{ "adunit",                 CONFIGSET_SKIN },
{ "adunit-omit-if-admin",   CONFIGSET_SKIN },
{ "adunit-omit-if-user",    CONFIGSET_SKIN },
{ "default-csp",            CONFIGSET_SKIN },
{ "sitemap-extra",          CONFIGSET_SKIN },
{ "safe-html",              CONFIGSET_SKIN },

{ "project-name",           CONFIGSET_PROJ },
{ "short-project-name",     CONFIGSET_PROJ },
{ "project-description",    CONFIGSET_PROJ },
{ "index-page",             CONFIGSET_PROJ },
{ "manifest",               CONFIGSET_PROJ },
{ "binary-glob",            CONFIGSET_PROJ },
{ "clean-glob",             CONFIGSET_PROJ },
{ "ignore-glob",            CONFIGSET_PROJ },
{ "keep-glob",              CONFIGSET_PROJ },
{ "crlf-glob",              CONFIGSET_PROJ },
{ "crnl-glob",              CONFIGSET_PROJ },
{ "encoding-glob",          CONFIGSET_PROJ },
{ "empty-dirs",             CONFIGSET_PROJ },
{ "dotfiles",               CONFIGSET_PROJ },
{ "parent-project-code",    CONFIGSET_PROJ },
{ "parent-project-name",    CONFIGSET_PROJ },
{ "hash-policy",            CONFIGSET_PROJ },
{ "comment-format",         CONFIGSET_PROJ },
{ "mimetypes",              CONFIGSET_PROJ },
{ "forbid-delta-manifests", CONFIGSET_PROJ },
{ "mv-rm-files",            CONFIGSET_PROJ },

{ "user-color-map",         CONFIGSET_USER },

{ "ticket-table",           CONFIGSET_TKT  },
{ "ticket-common",          CONFIGSET_TKT  },
{ "ticket-change",          CONFIGSET_TKT  },
{ "ticket-newpage",         CONFIGSET_TKT  },
{ "ticket-viewpage",        CONFIGSET_TKT  },
{ "ticket-editpage",        CONFIGSET_TKT  },
{ "ticket-reportlist",      CONFIGSET_TKT  },
{ "ticket-report-template", CONFIGSET_TKT  },
{ "ticket-key-template",    CONFIGSET_TKT  },
{ "ticket-title-expr",      CONFIGSET_TKT  },
{ "ticket-closed-expr",     CONFIGSET_TKT  },

{NULL, 0}
};


/*
** Impl of /json/config/get. Requires setup rights.
**
*/
static cson_value * json_config_get(void){
  cson_object * pay = NULL;
  Stmt q = empty_Stmt;
  Blob sql = empty_blob;
  char const * zName = NULL;
  int confMask = 0;
  char optSkinBackups = 0;
  unsigned int i;
  if(!g.perm.Setup){
    json_set_err(FSL_JSON_E_DENIED, "Requires 's' permissions.");
    return NULL;
  }

  i = g.json.dispatchDepth + 1;
  zName = json_command_arg(i);
  for( ; zName; zName = json_command_arg(++i) ){
    if(0==(strcmp("all", zName))){
      confMask = CONFIGSET_ALL;
    }else if(0==(strcmp("project", zName))){
      confMask |= CONFIGSET_PROJ;
    }else if(0==(strcmp("skin", zName))){
      confMask |= (CONFIGSET_CSS|CONFIGSET_SKIN);
    }else if(0==(strcmp("ticket", zName))){
      confMask |= CONFIGSET_TKT;
    }else if(0==(strcmp("skin-backup", zName))){
      optSkinBackups = 1;
    }else{
      json_set_err( FSL_JSON_E_INVALID_ARGS,
                    "Unknown config area: %s", zName);
      return NULL;
    }
  }

  if(!confMask && !optSkinBackups){
    json_set_err(FSL_JSON_E_MISSING_ARGS, "No configuration area(s) selected.");
  }
  blob_append(&sql,
              "SELECT name, value"
              " FROM config "
              " WHERE 0 ", -1);
  {
    const struct JsonConfigProperty * prop = &JsonConfigProperties[0];
    blob_append(&sql," OR name IN (",-1);
    for( i = 0; prop->name; ++prop ){
      if(prop->groupMask & confMask){
        if( i++ ){
          blob_append(&sql,",",1);
        }
        blob_append_sql(&sql, "%Q", prop->name);
      }
    }
    blob_append(&sql,") ", -1);
  }


  if( optSkinBackups ){
    blob_append(&sql, " OR name GLOB 'skin:*'", -1);
  }
  blob_append(&sql," ORDER BY name", -1);
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_reset(&sql);
  pay = cson_new_object();
  while( (SQLITE_ROW==db_step(&q)) ){
    cson_object_set(pay,
                    db_column_text(&q,0),
                    json_new_string(db_column_text(&q,1)));
  }
  db_finalize(&q);
  return cson_object_value(pay);
}

/*
** Impl of /json/config/save.
**
** TODOs:
*/
static cson_value * json_config_save(void){
  json_set_err(FSL_JSON_E_NYI, NULL);
  return NULL;
}

/*
** Impl of /json/settings/get.
*/
static cson_value * json_settings_get(void){
  cson_object * pay = cson_new_object();   /* output payload */
  int nSetting, i;                       /* setting count and loop var */
  const Setting *aSetting = setting_info(&nSetting);
  const char * zRevision = 0;            /* revision to look for
                                            versioned settings in */
  char * zUuid = 0;                      /* Resolved UUID of zRevision */
  Stmt q = empty_Stmt;                   /* Config-search query */
  Stmt qFoci = empty_Stmt;               /* foci query */

  if( !g.perm.Read ){
    json_set_err( FSL_JSON_E_DENIED, "Fetching settings requires 'o' access." );
    return NULL;
  }
  zRevision = json_find_option_cstr("version",NULL,NULL);
  if( 0!=zRevision ){
    int rid = name_to_uuid2(zRevision, "ci", &zUuid);
    if(rid<=0){
      json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
                   "Cannot find the given version.");
      return NULL;
    }
    db_multi_exec("CREATE VIRTUAL TABLE IF NOT EXISTS "
                  "temp.foci USING files_of_checkin;");
    db_prepare(&qFoci,
               "SELECT uuid FROM temp.foci WHERE "
               "checkinID=%d AND filename='.fossil-settings/' || :name",
               rid);
  }
  zRevision = 0;

  if( g.localOpen ){
    db_prepare(&q,
       "SELECT 'checkout', value FROM vvar WHERE name=:name"
       " UNION ALL "
       "SELECT 'repo', value FROM config WHERE name=:name"
    );
  }else{
    db_prepare(&q,
      "SELECT 'repo', value FROM config WHERE name=:name"
    );
  }
  for(i=0; i<nSetting; ++i){
    const Setting *pSet = &aSetting[i];
    cson_object * jSet;
    cson_value * pVal = 0, * pSrc = 0;
    jSet = cson_new_object();
    cson_object_set(pay, pSet->name, cson_object_value(jSet));
    cson_object_set(jSet, "versionable",cson_value_new_bool(pSet->versionable));
    cson_object_set(jSet, "sensitive", cson_value_new_bool(pSet->sensitive));
    cson_object_set(jSet, "defaultValue", (pSet->def && pSet->def[0])
                    ? json_new_string(pSet->def)
                    : cson_value_null());
    if( 0==pSet->sensitive || 0!=g.perm.Setup ){
      if( pSet->versionable ){
        /* Check to see if this is overridden by a versionable
        ** settings file */
        if( 0!=zUuid ){
          /* Attempt to find a versioned setting stored in the given
          ** check-in version. */
          db_bind_text(&qFoci, ":name", pSet->name);
          if( SQLITE_ROW==db_step(&qFoci) ){
            int frid = fast_uuid_to_rid(db_column_text(&qFoci, 0));
            Blob content;
            blob_zero(&content);
            if( 0!=content_get(frid, &content) ){
              pSrc = json_new_string("versioned");
              pVal = json_new_string(blob_str(&content));
            }
            blob_reset(&content);
          }
          db_reset(&qFoci);
        }
        if( 0==pSrc && g.localOpen ){
          /* Pull value from a checkout-local .fossil-settings/X file,
          ** if one exists. */
          Blob versionedPathname;
          blob_zero(&versionedPathname);
          blob_appendf(&versionedPathname, "%s.fossil-settings/%s",
                       g.zLocalRoot, pSet->name);
          if( file_size(blob_str(&versionedPathname), ExtFILE)>=0 ){
            Blob content;
            blob_zero(&content);
            blob_read_from_file(&content, blob_str(&versionedPathname),ExtFILE);
            pSrc = json_new_string("versioned");
            pVal = json_new_string(blob_str(&content));
            blob_reset(&content);
          }
          blob_reset(&versionedPathname);
        }
      }
      if( 0==pSrc ){
        /* Setting is not versionable or we had no versioned value, so
        ** use the value from localdb.vvar or repository.config (in
        ** that order). */
        db_bind_text(&q, ":name", pSet->name);
        if( SQLITE_ROW==db_step(&q) ){
          pSrc = json_new_string(db_column_text(&q, 0));
          pVal = json_new_string(db_column_text(&q, 1));
        }
        db_reset(&q);
      }
    }
    cson_object_set(jSet, "valueSource", pSrc ? pSrc : cson_value_null());
    cson_object_set(jSet, "value", pVal ? pVal : cson_value_null());
  }/*aSetting loop*/
  db_finalize(&q);
  db_finalize(&qFoci);
  fossil_free(zUuid);
  return cson_object_value(pay);
}

/*
** Impl of /json/settings/set.
**
** Input payload is an object mapping setting names to values. All
** values are set in the repository.config table. It has no response
** payload.
*/
static cson_value * json_settings_set(void){
  Stmt q = empty_Stmt;                   /* Config-set query */
  cson_object_iterator objIter = cson_object_iterator_empty;
  cson_kvp * pKvp;
  int nErr = 0, nProp = 0;

  if( 0==g.perm.Setup ){
    json_set_err( FSL_JSON_E_DENIED, "Setting settings requires 's' access." );
    return NULL;
  }
  else if( 0==g.json.reqPayload.o ){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "Missing payload of setting-to-value mappings.");
    return NULL;
  }

  db_unprotect(PROTECT_CONFIG);
  db_prepare(&q,
      "INSERT OR REPLACE INTO config (name, value, mtime) "
      "VALUES(:name, :value, CAST(strftime('%%s') AS INT))"
  );
  db_begin_transaction();
  cson_object_iter_init( g.json.reqPayload.o, &objIter );
  while( (pKvp = cson_object_iter_next(&objIter)) ){
    char const * zKey = cson_string_cstr( cson_kvp_key(pKvp) );
    cson_value * pVal;
    const Setting *pSetting = db_find_setting( zKey, 0 );
    if( 0==pSetting ){
      nErr = json_set_err(FSL_JSON_E_INVALID_ARGS,
                          "Unknown setting: %s", zKey);
      break;
    }
    pVal = cson_kvp_value(pKvp);
    switch( cson_value_type_id(pVal) ){
      case CSON_TYPE_NULL:
        db_multi_exec("DELETE FROM config WHERE name=%Q", pSetting->name);
        continue;
      case CSON_TYPE_BOOL:
        db_bind_int(&q, ":value", cson_value_get_bool(pVal) ? 1 : 0);
        break;
      case CSON_TYPE_INTEGER:
        db_bind_int64(&q, ":value", cson_value_get_integer(pVal));
        break;
      case CSON_TYPE_DOUBLE:
        db_bind_double(&q, ":value", cson_value_get_double(pVal));
        break;
      case CSON_TYPE_STRING:
        db_bind_text(&q, ":value", cson_value_get_cstr(pVal));
        break;
      default:
        nErr = json_set_err(FSL_JSON_E_USAGE,
                            "Invalid value type for setting '%s'.",
                            pSetting->name);
        break;
    }
    if( 0!=nErr ) break;
    db_bind_text(&q, ":name", zKey);
    db_step(&q);
    db_reset(&q);
    ++nProp;
  }
  db_finalize(&q);
  if( 0==nErr && 0==nProp ){
    nErr = json_set_err(FSL_JSON_E_INVALID_ARGS,
                        "Payload contains no settings to set.");
  }
  db_end_transaction(nErr);
  db_protect_pop();
  return NULL;
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_detail.h.

















































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
#if !defined(FOSSIL_JSON_DETAIL_H_INCLUDED)
#define FOSSIL_JSON_DETAIL_H_INCLUDED
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#if !defined(_RC_COMPILE_)
#include "cson_amalgamation.h"
#endif /* !defined(_RC_COMPILE_) */

/**
   FOSSIL_JSON_API_VERSION holds the date (YYYYMMDD) of the latest
   "significant" change to the JSON API (a change in an interface or
   new functionality). It is sent as part of the /json/version
   request. We could arguably add it to each response or even add a
   version number to each response type, allowing very fine (too
   fine?) granularity in compatibility change notification. The
   version number could be included in part of the command dispatching
   framework, allowing the top-level dispatching code to deal with it
   (for the most part).
*/
#define FOSSIL_JSON_API_VERSION "20120713"

/*
** Impl details for the JSON API which need to be shared
** across multiple C files.
*/

/*
** The "official" list of Fossil/JSON error codes.  Their values might
** very well change during initial development but after their first
** public release they must stay stable.
**
** Values must be in the range 1000..9999 for error codes and 1..999
** for warning codes.
**
** Numbers evenly dividable by 100 are "categories", and error codes
** for a given category have their high bits set to the category
** value.
**
** Maintenance reminder: when entries are added to this list, update
** the code in json_page_resultCodes() and json_err_cstr() (both in
** json.c)!
**
*/
#if !defined(_RC_COMPILE_)
enum FossilJsonCodes {
FSL_JSON_W_START = 0,
FSL_JSON_W_UNKNOWN /*+1*/,
FSL_JSON_W_ROW_TO_JSON_FAILED /*+2*/,
FSL_JSON_W_COL_TO_JSON_FAILED /*+3*/,
FSL_JSON_W_STRING_TO_ARRAY_FAILED /*+4*/,
FSL_JSON_W_TAG_NOT_FOUND /*+5*/,

FSL_JSON_W_END = 1000,
FSL_JSON_E_GENERIC = 1000,
FSL_JSON_E_GENERIC_SUB1 = FSL_JSON_E_GENERIC + 100,
FSL_JSON_E_INVALID_REQUEST /*+1*/,
FSL_JSON_E_UNKNOWN_COMMAND /*+2*/,
FSL_JSON_E_UNKNOWN /*+3*/,
/*REUSE: +4*/
FSL_JSON_E_TIMEOUT /*+5*/,
FSL_JSON_E_ASSERT /*+6*/,
FSL_JSON_E_ALLOC /*+7*/,
FSL_JSON_E_NYI /*+8*/,
FSL_JSON_E_PANIC /*+9*/,
FSL_JSON_E_MANIFEST_READ_FAILED /*+10*/,
FSL_JSON_E_FILE_OPEN_FAILED /*+11*/,

FSL_JSON_E_AUTH = 2000,
FSL_JSON_E_MISSING_AUTH /*+1*/,
FSL_JSON_E_DENIED /*+2*/,
FSL_JSON_E_WRONG_MODE /*+3*/,

FSL_JSON_E_LOGIN_FAILED = FSL_JSON_E_AUTH +100,
FSL_JSON_E_LOGIN_FAILED_NOSEED /*+1*/,
FSL_JSON_E_LOGIN_FAILED_NONAME /*+2*/,
FSL_JSON_E_LOGIN_FAILED_NOPW /*+3*/,
FSL_JSON_E_LOGIN_FAILED_NOTFOUND /*+4*/,

FSL_JSON_E_USAGE = 3000,
FSL_JSON_E_INVALID_ARGS /*+1*/,
FSL_JSON_E_MISSING_ARGS /*+2*/,
FSL_JSON_E_AMBIGUOUS_UUID /*+3*/,
FSL_JSON_E_UNRESOLVED_UUID /*+4*/,
FSL_JSON_E_RESOURCE_ALREADY_EXISTS /*+5*/,
FSL_JSON_E_RESOURCE_NOT_FOUND /*+6*/,

FSL_JSON_E_DB = 4000,
FSL_JSON_E_STMT_PREP /*+1*/,
FSL_JSON_E_STMT_BIND /*+2*/,
FSL_JSON_E_STMT_EXEC /*+3*/,
FSL_JSON_E_DB_LOCKED /*+4*/,

FSL_JSON_E_DB_NEEDS_REBUILD = FSL_JSON_E_DB + 101,
FSL_JSON_E_DB_NOT_FOUND = FSL_JSON_E_DB + 102,
FSL_JSON_E_DB_NOT_VALID = FSL_JSON_E_DB + 103,
/*
** Maintenance reminder: FSL_JSON_E_DB_NOT_FOUND gets triggered in the
** bootstrapping process before we know whether we need to check for
** FSL_JSON_E_DB_NEEDS_CHECKOUT. Thus the former error trumps the
** latter.
*/
FSL_JSON_E_DB_NEEDS_CHECKOUT = FSL_JSON_E_DB + 104
};


/*
** Signature for JSON page/command callbacks. Each callback is
** responsible for handling one JSON request/command and/or
** dispatching to sub-commands.
**
** By the time the callback is called, json_page_top() (HTTP mode) or
** json_cmd_top() (CLI mode) will have set up the JSON-related
** environment. Implementations may generate a "result payload" of any
** JSON type by returning its value from this function (ownership is
** transferred to the caller). On error they should set
** g.json.resultCode to one of the FossilJsonCodes values and return
** either their payload object or NULL. Note that NULL is a legal
** success value - it simply means the response will contain no
** payload. If g.json.resultCode is non-zero when this function
** returns then the top-level dispatcher will destroy any payload
** returned by this function and will output a JSON error response
** instead.
**
** All of the setup/response code is handled by the top dispatcher
** functions and the callbacks concern themselves only with:
**
** a) Permissions checking (inspecting g.perm).
** b) generating a response payload (if applicable)
** c) Setting g.json's error state (if applicable). See json_set_err().
**
** It is imperative that NO callback functions EVER output ANYTHING to
** stdout, as that will effectively corrupt any JSON output, and
** almost certainly will corrupt any HTTP response headers. Output
** sent to stderr ends up in my apache log, so that might be useful
** for debugging in some cases, but no such code should be left
** enabled for non-debugging builds.
*/
typedef cson_value * (*fossil_json_f)(void);

/*
** Holds name-to-function mappings for JSON page/command dispatching.
**
** Internally we model page dispatching lists as arrays of these
** objects, where the final entry in the array has a NULL name value
** to act as the end-of-list sentinel.
**
*/
typedef struct JsonPageDef{
  /*
  ** The commmand/page's name (path, not including leading /json/).
  **
  ** Reminder to self: we cannot use sub-paths with commands this way
  ** without additional string-splitting downstream. e.g. foo/bar.
  ** Alternately, we can create different JsonPageDef arrays for each
  ** subset.
  */
  char const * name;
  /*
  ** Returns a payload object for the response.  If it returns a
  ** non-NULL value, the caller owns it.  To trigger an error this
  ** function should set g.json.resultCode to a value from the
  ** FossilJsonCodes enum. If it sets an error value and returns
  ** a payload, the payload will be destroyed (not sent with the
  ** response).
  */
  fossil_json_f func;
  /*
  ** Which mode(s) of execution does func() support:
  **
  ** <0 = CLI only, >0 = HTTP only, 0==both
  **
  ** Now that we can simulate POST in CLI mode, the distinction
  ** between them has disappeared in most (or all) cases, so 0 is
  ** the standard value.
  */
  int runMode;
} JsonPageDef;

/*
** Holds common keys used for various JSON API properties.
*/
typedef struct FossilJsonKeys_{
  /** maintainers: please keep alpha sorted (case-insensitive) */
  char const * anonymousSeed;
  char const * authToken;
  char const * commandPath;
  char const * mtime;
  char const * payload;
  char const * requestId;
  char const * resultCode;
  char const * resultText;
  char const * timestamp;
} FossilJsonKeys_;
extern const FossilJsonKeys_ FossilJsonKeys;

/*
** A page/command dispatch helper for fossil_json_f() implementations.
** pages must be an array of JsonPageDef commands which we can
** dispatch. The final item in the array MUST have a NULL name
** element.
**
** This function takes the command specified in
** json_command_arg(1+g.json.dispatchDepth) and searches pages for a
** matching name. If found then that page's func() is called to fetch
** the payload, which is returned to the caller.
**
** On error, g.json.resultCode is set to one of the FossilJsonCodes
** values and NULL is returned. If non-NULL is returned, ownership is
** transfered to the caller (but the g.json error state might still be
** set in that case, so the caller must check that or pass it on up
** the dispatch chain).
*/
cson_value * json_page_dispatch_helper(JsonPageDef const * pages);

/*
** Convenience wrapper around cson_value_new_string().
** Returns NULL if str is NULL or on allocation error.
*/
cson_value * json_new_string( char const * str );

/*
** Similar to json_new_string(), but takes a printf()-style format
** specifiers. Supports the printf extensions supported by fossil's
** mprintf().  Returns NULL if str is NULL or on allocation error.
**
** Maintenance note: json_new_string() is NOT variadic because by the
** time the variadic form was introduced we already had use cases
** which segfaulted via json_new_string() because they contain printf
** markup (e.g. wiki content). Been there, debugged that.
*/
cson_value * json_new_string_f( char const * fmt, ... );

/*
** Returns true if fossil is running in JSON mode and we are either
** running in HTTP mode OR g.json.post.o is not NULL (meaning POST
** data was fed in from CLI mode).
**
** Specifically, it will return false when any of these apply:
**
** a) Not running in JSON mode (via json command or /json path).
**
** b) We are running in JSON CLI mode, but no POST data has been fed
** in.
**
** Whether or not we need to take args from CLI or POST data makes a
** difference in argument/parameter handling in many JSON routines,
** and thus this distinction.
*/
int fossil_has_json(void);

enum json_get_changed_files_flags {
    json_get_changed_files_ELIDE_PARENT = 1 << 0
};

#endif /* !defined(_RC_COMPILE_) */
#endif/*FOSSIL_JSON_DETAIL_H_INCLUDED*/
#endif /* FOSSIL_ENABLE_JSON */
Added src/json_diff.c.











































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#include "config.h"
#include "json_diff.h"

#if INTERFACE
#include "json_detail.h"
#endif



/*
** Generates a diff between two versions (zFrom and zTo), using nContext
** content lines in the output. On success, returns a new JSON String
** object. On error it sets g.json's error state and returns NULL.
**
** If fSbs is true (non-0) them side-by-side diffs are used.
**
** If fHtml is true then HTML markup is added to the diff.
*/
cson_value * json_generate_diff(const char *zFrom, const char *zTo,
                                int nContext, char fSbs,
                                char fHtml){
  int fromid;
  int toid;
  int outLen;
  DiffConfig DCfg;
  Blob from = empty_blob, to = empty_blob, out = empty_blob;
  cson_value * rc = NULL;
  int flags = (fSbs ? DIFF_SIDEBYSIDE : 0)
    | (fHtml ? DIFF_HTML : 0);
  fromid = name_to_typed_rid(zFrom, "*");
  if(fromid<=0){
      json_set_err(FSL_JSON_E_UNRESOLVED_UUID,
                   "Could not resolve 'from' ID.");
      return NULL;
  }
  toid = name_to_typed_rid(zTo, "*");
  if(toid<=0){
      json_set_err(FSL_JSON_E_UNRESOLVED_UUID,
                   "Could not resolve 'to' ID.");
      return NULL;
  }
  content_get(fromid, &from);
  content_get(toid, &to);
  blob_zero(&out);
  diff_config_init(&DCfg, flags);
  text_diff(&from, &to, &out, &DCfg);
  blob_reset(&from);
  blob_reset(&to);
  outLen = blob_size(&out);
  if(outLen>=0){
    rc = cson_value_new_string(blob_buffer(&out),
                               (unsigned int)blob_size(&out));
  }
  blob_reset(&out);
  return rc;
}

/*
** Implementation of the /json/diff page.
**
** Arguments:
**
** v1=1st version to diff
** v2=2nd version to diff
**
** Can come from GET, POST.payload, CLI -v1/-v2 or as positional
** parameters following the command name (in HTTP and CLI modes).
**
*/
cson_value * json_page_diff(void){
  cson_object * pay = NULL;
  cson_value * v = NULL;
  char const * zFrom;
  char const * zTo;
  int nContext = 0;
  char doSBS;
  char doHtml;
  if(!g.perm.Read){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' permissions.");
    return NULL;
  }
  zFrom = json_find_option_cstr("v1",NULL,NULL);
  if(!zFrom){
    zFrom = json_command_arg(2);
  }
  if(!zFrom){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "Required 'v1' parameter is missing.");
    return NULL;
  }
  zTo = json_find_option_cstr("v2",NULL,NULL);
  if(!zTo){
    zTo = json_command_arg(3);
  }
  if(!zTo){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "Required 'v2' parameter is missing.");
    return NULL;
  }
  nContext = json_find_option_int("context",NULL,"c",5);
  doSBS = json_find_option_bool("sbs",NULL,"y",0);
  doHtml = json_find_option_bool("html",NULL,"h",0);
  v = json_generate_diff(zFrom, zTo, nContext, doSBS, doHtml);
  if(!v){
    if(!g.json.resultCode){
      json_set_err(FSL_JSON_E_UNKNOWN,
                   "Generating diff failed for unknown reason.");
    }
    return NULL;
  }
  pay = cson_new_object();
  cson_object_set(pay, "from", json_new_string(zFrom));
  cson_object_set(pay, "to", json_new_string(zTo));
  cson_object_set(pay, "diff", v);
  v = 0;

  return pay ? cson_object_value(pay) : NULL;
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_dir.c.






































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_dir.h"

#if INTERFACE
#include "json_detail.h"
#endif

static cson_value * json_page_dir_list(void);
/*
** Mapping of /json/wiki/XXX commands/paths to callbacks.
*/
#if 0 /* TODO: Not used? */
static const JsonPageDef JsonPageDefs_Dir[] = {
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};
#endif

#if 0 /* TODO: Not used? */
static char const * json_dir_path_extra(void){
  static char const * zP = NULL;
  if( !zP ){
    zP = g.zExtra;
    while(zP && *zP && ('/'==*zP)){
      ++zP;
    }
  }
  return zP;
}
#endif

/*
** Impl of /json/dir. 98% of it was taken directly
** from browse.c::page_dir()
*/
static cson_value * json_page_dir_list(void){
  cson_object * zPayload = NULL; /* return value */
  cson_array * zEntries = NULL; /* accumulated list of entries. */
  cson_object * zEntry = NULL;  /* a single dir/file entry. */
  cson_array * keyStore = NULL; /* garbage collector for shared strings. */
  cson_string * zKeyName = NULL;
  cson_string * zKeySize = NULL;
  cson_string * zKeyIsDir = NULL;
  cson_string * zKeyUuid = NULL;
  cson_string * zKeyTime = NULL;
  cson_string * zKeyRaw = NULL;
  char * zD = NULL;
  char const * zDX = NULL;
  int nD;
  char * zUuid = NULL;
  char const * zCI = NULL;
  Manifest * pM = NULL;
  Stmt q = empty_Stmt;
  int rid = 0;
  if( !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED, "Requires 'o' permissions.");
    return NULL;
  }
  zCI = json_find_option_cstr("checkin",NULL,"ci" );

  /* If a specific check-in is requested, fetch and parse it.  If the
  ** specific check-in does not exist, clear zCI.  zCI==0 will cause all
  ** files from all check-ins to be displayed.
  */
  if( zCI && *zCI ){
    pM = manifest_get_by_name(zCI, &rid);
    if( pM ){
      zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    }else{
      json_set_err(FSL_JSON_E_UNRESOLVED_UUID,
                   "Check-in name [%s] is unresolved.",
                   zCI);
      return NULL;
    }
  }

  /* Jump through some hoops to find the directory name... */
  zDX = json_find_option_cstr("name",NULL,NULL);
  if(!zDX && !g.isHTTP){
    zDX = json_command_arg(g.json.dispatchDepth+1);
  }
  if(zDX && (!*zDX || (0==strcmp(zDX,"/")))){
    zDX = NULL;
  }
  zD = zDX ? fossil_strdup(zDX) : NULL;
  nD = zD ? strlen(zD)+1 : 0;
  while( nD>1 && zD[nD-2]=='/' ){ zD[(--nD)-1] = 0; }

  sqlite3_create_function(g.db, "pathelement", 2, SQLITE_UTF8, 0,
                          pathelementFunc, 0, 0);

  /* Compute the temporary table "localfiles" containing the names
  ** of all files and subdirectories in the zD[] directory.
  **
  ** Subdirectory names begin with "/".  This causes them to sort
  ** first and it also gives us an easy way to distinguish files
  ** from directories in the loop that follows.
  */

  if( zCI ){
    Stmt ins;
    ManifestFile *pFile;
    ManifestFile *pPrev = 0;
    int nPrev = 0;
    int c;

    db_multi_exec(
                  "CREATE TEMP TABLE json_dir_files("
                  "  n UNIQUE NOT NULL," /* file name */
                  "  fn UNIQUE NOT NULL," /* full file name */
                  "  u DEFAULT NULL," /* file uuid */
                  "  sz DEFAULT -1," /* file size */
                  "  mtime DEFAULT NULL" /* file mtime in unix epoch format */
                  ");"
                  );

    db_prepare(&ins,
               "INSERT OR IGNORE INTO json_dir_files (n,fn,u,sz,mtime) "
               "SELECT"
               "  pathelement(:path,0),"
               "  CASE WHEN %Q IS NULL THEN '' ELSE %Q||'/' END ||:abspath,"
               "  a.uuid,"
               "  a.size,"
               "  CAST(strftime('%%s',e.mtime) AS INTEGER) "
               "FROM"
               "  mlink m, "
               "  event e,"
               "  blob a,"
               "  blob b "
               "WHERE"
               " e.objid=m.mid"
               " AND a.rid=m.fid"/*FILE artifact*/
               " AND b.rid=m.mid"/*CHECKIN artifact*/
               " AND a.uuid=:uuid",
               zD, zD
               );
    manifest_file_rewind(pM);
    while( (pFile = manifest_file_next(pM,0))!=0 ){
      if( nD>0
        && ((pFile->zName[nD-1]!='/') || (0!=memcmp(pFile->zName, zD, nD-1)))
      ){
        continue;
      }
      /*printf("zD=%s, nD=%d, pFile->zName=%s\n", zD, nD, pFile->zName);*/
      if( pPrev
       && memcmp(&pFile->zName[nD],&pPrev->zName[nD],nPrev)==0
       && (pFile->zName[nD+nPrev]==0 || pFile->zName[nD+nPrev]=='/')
      ){
        continue;
      }
      db_bind_text( &ins, ":path", &pFile->zName[nD] );
      db_bind_text( &ins, ":abspath", &pFile->zName[nD] );
      db_bind_text( &ins, ":uuid", pFile->zUuid );
      db_step(&ins);
      db_reset(&ins);
      pPrev = pFile;
      for(nPrev=0; (c=pPrev->zName[nD+nPrev]) && c!='/'; nPrev++){}
      if( c=='/' ) nPrev++;
    }
    db_finalize(&ins);
  }else if( zD && *zD ){
    db_multi_exec(
      "CREATE TEMP VIEW json_dir_files AS"
      " SELECT DISTINCT(pathelement(name,%d)) AS n,"
      " %Q||'/'||name AS fn,"
      " NULL AS u, NULL AS sz, NULL AS mtime"
      " FROM filename"
      "  WHERE name GLOB '%q/*'"
      " GROUP BY n",
      nD, zD, zD
    );
  }else{
    db_multi_exec(
      "CREATE TEMP VIEW json_dir_files"
      " AS SELECT DISTINCT(pathelement(name,0)) AS n, NULL AS fn"
      " FROM filename"
    );
  }

  if(zCI){
    db_prepare( &q, "SELECT"
                "  n as name,"
                "  fn as fullname,"
                "  u as uuid,"
                "  sz as size,"
                "  mtime as mtime "
                "FROM json_dir_files ORDER BY n");
  }else{/* UUIDs are all NULL. */
    db_prepare( &q, "SELECT n, fn FROM json_dir_files ORDER BY n");
  }

  zKeyName = cson_new_string("name",4);
  zKeyUuid = cson_new_string("uuid",4);
  zKeyIsDir = cson_new_string("isDir",5);
  keyStore = cson_new_array();
  cson_array_append( keyStore, cson_string_value(zKeyName) );
  cson_array_append( keyStore, cson_string_value(zKeyUuid) );
  cson_array_append( keyStore, cson_string_value(zKeyIsDir) );

  if( zCI ){
    zKeySize = cson_new_string("size",4);
    cson_array_append( keyStore, cson_string_value(zKeySize) );
    zKeyTime = cson_new_string("timestamp",9);
    cson_array_append( keyStore, cson_string_value(zKeyTime) );
    zKeyRaw = cson_new_string("downloadPath",12);
    cson_array_append( keyStore, cson_string_value(zKeyRaw) );
  }
  zPayload = cson_new_object();
  cson_object_set_s( zPayload, zKeyName,
                     json_new_string((zD&&*zD) ? zD : "/") );
  if( zUuid ){
    cson_object_set( zPayload, "checkin", json_new_string(zUuid) );
  }

  while( (SQLITE_ROW==db_step(&q)) ){
    cson_value * name = NULL;
    char const * n = db_column_text(&q,0);
    char const isDir = ('/'==*n);
    zEntry = cson_new_object();
    if(!zEntries){
      zEntries = cson_new_array();
      cson_object_set( zPayload, "entries", cson_array_value(zEntries) );
    }
    cson_array_append(zEntries, cson_object_value(zEntry) );
    if(isDir){
      name = json_new_string( n+1 );
      cson_object_set_s(zEntry, zKeyIsDir, cson_value_true() );
    } else{
      name = json_new_string( n );
    }
    cson_object_set_s(zEntry, zKeyName, name );
    if( zCI && !isDir){
      /* Don't add the uuid/size for dir entries - that data refers to
         one of the files in that directory :/. Entries with no
         --checkin may refer to N versions, and therefore we cannot
         associate a single size and uuid with them (and fetching all
         would be overkill for most use cases).
      */
      char const * fullName = db_column_text(&q,1);
      char const * u = db_column_text(&q,2);
      sqlite_int64 const sz = db_column_int64(&q,3);
      sqlite_int64 const ts = db_column_int64(&q,4);
      cson_object_set_s(zEntry, zKeyUuid, json_new_string( u ) );
      cson_object_set_s(zEntry, zKeySize,
                        cson_value_new_integer( (cson_int_t)sz ));
      cson_object_set_s(zEntry, zKeyTime,
          cson_value_new_integer( (cson_int_t)ts ));
      cson_object_set_s(zEntry, zKeyRaw,
                        json_new_string_f("/raw/%T?name=%t",
                                          fullName, u));
    }
  }
  db_finalize(&q);
  if(pM){
    manifest_destroy(pM);
  }
  cson_free_array( keyStore );

  free( zUuid );
  free( zD );
  return cson_object_value(zPayload);
}

/*
** Implements the /json/dir family of pages/commands.
**
*/
cson_value * json_page_dir(void){
#if 1
  return json_page_dir_list();
#else
  return json_page_dispatch_helper(&JsonPageDefs_Dir[0]);
#endif
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_finfo.c.
























































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_finfo.h"

#if INTERFACE
#include "json_detail.h"
#endif

/*
** Implements the /json/finfo page/command.
**
*/
cson_value * json_page_finfo(void){
  cson_object * pay = NULL;
  cson_array * checkins = NULL;
  char const * zFilename = NULL;
  Blob sql = empty_blob;
  Stmt q = empty_Stmt;
  char const * zAfter = NULL;
  char const * zBefore = NULL;
  int limit = -1;
  int currentRow = 0;
  char const * zCheckin = NULL;
  signed char sort = -1;
  if(!g.perm.Read){
    json_set_err(FSL_JSON_E_DENIED,"Requires 'o' privileges.");
    return NULL;
  }
  json_warn( FSL_JSON_W_UNKNOWN,
             "Achtung: the output of the finfo command is up for change.");

  /* For the "name" argument we have to jump through some hoops to make sure
     that we don't get the fossil-internally-assigned "name" option.
  */
  zFilename = json_find_option_cstr2("name",NULL,NULL, g.json.dispatchDepth+1);
  if(!zFilename || !*zFilename){
    json_set_err(FSL_JSON_E_MISSING_ARGS, "Missing 'name' parameter.");
    return NULL;
  }

  if(0==db_int(0,"SELECT 1 FROM filename WHERE name=%Q",zFilename)){
    json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND, "File entry not found.");
    return NULL;
  }

  zBefore = json_find_option_cstr("before",NULL,"b");
  zAfter = json_find_option_cstr("after",NULL,"a");
  limit = json_find_option_int("limit",NULL,"n", -1);
  zCheckin = json_find_option_cstr("checkin",NULL,"ci");

  blob_append_sql(&sql,
/*0*/   "SELECT b.uuid,"
/*1*/   "   ci.uuid,"
/*2*/   "   (SELECT uuid FROM blob WHERE rid=mlink.fid),"/* Current file uuid */
/*3*/   "   cast(strftime('%%s',event.mtime) AS INTEGER),"
/*4*/   "   coalesce(event.euser, event.user),"
/*5*/   "   coalesce(event.ecomment, event.comment),"
/*6*/   " (SELECT uuid FROM blob WHERE rid=mlink.pid),"  /* Parent file uuid */
/*7*/   "   event.bgcolor,"
/*8*/   " b.size,"
/*9*/   " (mlink.pid==0) AS isNew,"
/*10*/  " (mlink.fid==0) AS isDel"
        "  FROM mlink, blob b, event, blob ci, filename"
        " WHERE filename.name=%Q"
        "   AND mlink.fnid=filename.fnid"
        "   AND b.rid=mlink.fid"
        "   AND event.objid=mlink.mid"
        "   AND event.objid=ci.rid",
        zFilename
               );

  if( zCheckin && *zCheckin ){
    char * zU = NULL;
    int rc = name_to_uuid2( zCheckin, "ci", &zU );
    /*printf("zCheckin=[%s], zU=[%s]", zCheckin, zU);*/
    if(rc<=0){
      json_set_err((rc<0) ? FSL_JSON_E_AMBIGUOUS_UUID :
                            FSL_JSON_E_RESOURCE_NOT_FOUND,
                   "Check-in hash %s.", (rc<0) ? "is ambiguous" : "not found");
      blob_reset(&sql);
      return NULL;
    }
    blob_append_sql(&sql, " AND ci.uuid='%q'", zU);
    free(zU);
  }else{
    if( zAfter && *zAfter ){
      blob_append_sql(&sql, " AND event.mtime>=julianday('%q')", zAfter);
      sort = 1;
    }else if( zBefore && *zBefore ){
      blob_append_sql(&sql, " AND event.mtime<=julianday('%q')", zBefore);
    }
  }

  blob_append_sql(&sql," ORDER BY event.mtime %s /*sort*/",
                        (sort>0 ? "ASC" : "DESC"));
  /*printf("SQL=\n%s\n",blob_str(&sql));*/
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_reset(&sql);

  pay = cson_new_object();
  cson_object_set(pay, "name", json_new_string(zFilename));
  if( limit > 0 ){
    cson_object_set(pay, "limit", json_new_int(limit));
  }
  checkins = cson_new_array();
  cson_object_set(pay, "checkins", cson_array_value(checkins));
  while( db_step(&q)==SQLITE_ROW ){
    cson_object * row = cson_new_object();
    int const isNew = db_column_int(&q,9);
    int const isDel = db_column_int(&q,10);
    cson_array_append( checkins, cson_object_value(row) );
    cson_object_set(row, "checkin", json_new_string( db_column_text(&q,1) ));
    cson_object_set(row, "uuid", json_new_string( db_column_text(&q,2) ));
    /*cson_object_set(row, "parentArtifact",
                      json_new_string( db_column_text(&q,6) ));*/
    cson_object_set(row, "timestamp", json_new_int( db_column_int64(&q,3) ));
    cson_object_set(row, "user", json_new_string( db_column_text(&q,4) ));
    cson_object_set(row, "comment", json_new_string( db_column_text(&q,5) ));
    /*cson_object_set(row, "bgColor",
                      json_new_string( db_column_text(&q,7) ));*/
    cson_object_set(row, "size", json_new_int( db_column_int64(&q,8) ));
    cson_object_set(row, "state", json_new_string(
                            json_artifact_status_to_string(isNew, isDel)));
    if( (0 < limit) && (++currentRow >= limit) ){
      break;
    }
  }
  db_finalize(&q);

  return pay ? cson_object_value(pay) : NULL;
}



#endif /* FOSSIL_ENABLE_JSON */
Added src/json_login.c.

















































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#include "config.h"
#include "json_login.h"

#if INTERFACE
#include "json_detail.h"
#endif


/*
** Implementation of the /json/login page.
**
*/
cson_value * json_page_login(void){
  char preciseErrors = /* if true, "complete" JSON error codes are used,
                          else they are "dumbed down" to a generic login
                          error code.
                       */
#if 1
    g.json.errorDetailParanoia ? 0 : 1
#else
    0
#endif
    ;
  /*
    FIXME: we want to check the GET/POST args in this order:

    - GET: name, n, password, p
    - POST: name, password

    but fossil's age-old behaviour of treating the last element of
    PATH_INFO as the value for the name parameter breaks that.

    Summary: If we check for P("name") first, then P("n"), then ONLY a
    GET param of "name" will match ("n" is not recognized). If we
    reverse the order of the checks then both forms work. The
    "p"/"password" check is not affected by this.
  */
  char const * name = cson_value_get_cstr(json_req_payload_get("name"));
  char const * pw = NULL;
  char const * anonSeed = NULL;
  cson_value * payload = NULL;
  int uid = 0;
  /* reminder to self: Fossil internally (for the sake of /wiki)
     interprets paths in the form /foo/bar/baz such that P("name") ==
     "bar/baz". This collides with our name/password checking, and
     thus we do some rather elaborate name=... checking.
  */
  pw = cson_value_get_cstr(json_req_payload_get("password"));
  if( !pw ){
    pw = PD("p",NULL);
    if( !pw ){
      pw = PD("password",NULL);
    }
  }
  if(!pw){
    g.json.resultCode = preciseErrors
      ? FSL_JSON_E_LOGIN_FAILED_NOPW
      : FSL_JSON_E_LOGIN_FAILED;
    return NULL;
  }

  if( !name ){
    name = PD("n",NULL);
    if( !name ){
      name = PD("name",NULL);
      if( !name ){
        g.json.resultCode = preciseErrors
          ? FSL_JSON_E_LOGIN_FAILED_NONAME
          : FSL_JSON_E_LOGIN_FAILED;
        return NULL;
      }
    }
  }

  if(0 == strcmp("anonymous",name)){
    /* check captcha/seed values... */
    enum { SeedBufLen = 100 /* in some JSON tests i once actually got an
                           80-digit number.
                        */
    };
    static char seedBuffer[SeedBufLen];
    cson_value const * jseed = json_getenv(FossilJsonKeys.anonymousSeed);
    seedBuffer[0] = 0;
    if( !jseed ){
      jseed = json_req_payload_get(FossilJsonKeys.anonymousSeed);
      if( !jseed ){
        jseed = json_getenv("cs") /* name used by HTML interface */;
      }
    }
    if(jseed){
      if( cson_value_is_number(jseed) ){
        sqlite3_snprintf((int)SeedBufLen, seedBuffer, "%"CSON_INT_T_PFMT,
			 cson_value_get_integer(jseed));
        anonSeed = seedBuffer;
      }else if( cson_value_is_string(jseed) ){
        anonSeed = cson_string_cstr(cson_value_get_string(jseed));
      }
    }
    if(!anonSeed){
      g.json.resultCode = preciseErrors
        ? FSL_JSON_E_LOGIN_FAILED_NOSEED
        : FSL_JSON_E_LOGIN_FAILED;
      return NULL;
    }
  }

#if 0
  {
    /* only for debugging the PD()-incorrect-result problem */
    cson_object * o = NULL;
    uid = login_search_uid( &name, pw );
    payload = cson_value_new_object();
    o = cson_value_get_object(payload);
    cson_object_set( o, "n", cson_value_new_string(name,strlen(name)));
    cson_object_set( o, "p", cson_value_new_string(pw,strlen(pw)));
    return payload;
  }
#endif
  uid = anonSeed
    ? login_is_valid_anonymous(name, pw, anonSeed)
    : login_search_uid(&name, pw)
    ;
  if( !uid ){
    g.json.resultCode = preciseErrors
      ? FSL_JSON_E_LOGIN_FAILED_NOTFOUND
      : FSL_JSON_E_LOGIN_FAILED;
    return NULL;
  }else{
    char * cookie = NULL;
    cson_object * po;
    char * cap = NULL;
    if(anonSeed){
      login_set_anon_cookie(&cookie, 0);
    }else{
      login_set_user_cookie(name, uid, &cookie, 0);
    }
    payload = cson_value_new_object();
    po = cson_value_get_object(payload);
    cson_object_set(po, "authToken", json_new_string(cookie));
    free(cookie);
    cson_object_set(po, "name", json_new_string(name));
    cap = db_text(NULL, "SELECT cap FROM user WHERE login=%Q", name);
    cson_object_set(po, "capabilities",
                    cap ? json_new_string(cap) : cson_value_null() );
    free(cap);
    cson_object_set(po, "loginCookieName",
                    json_new_string( login_cookie_name() ) );
    /* TODO: add loginExpiryTime to the payload. To do this properly
       we "should" add an ([unsigned] int *) to
       login_set_user_cookie() and login_set_anon_cookie(), to which
       the expiry time is assigned. (Remember that JSON doesn't do
       unsigned int.)

       For non-anonymous users we could also simply query the
       user.cexpire db field after calling login_set_user_cookie(),
       but for anonymous we need to get the time when the cookie is
       set because anon does not get a db entry like normal users
       do. Anonymous cookies currently have a hard-coded lifetime in
       login_set_anon_cookie() (currently 6 hours), which we "should
       arguably" change to use the time configured for non-anonymous
       users (see login_set_user_cookie() for details).
    */
    return payload;
  }
}

/*
** Impl of /json/logout.
**
*/
cson_value * json_page_logout(void){
  cson_value const *token = g.json.authToken;
    /* Remember that json_bootstrap_late() replaces the login cookie
       with the JSON auth token if the request contains it. If the
       request is missing the auth token then this will fetch fossil's
       original cookie. Either way, it's what we want :).

       We require the auth token to avoid someone maliciously
       trying to log someone else out (not 100% sure if that
       would be possible, given fossil's hardened cookie, but
       I'll assume it would be for the time being).
    */
    ;
  if(!token){
    g.json.resultCode = FSL_JSON_E_MISSING_AUTH;
  }else{
    login_clear_login_data();
    g.json.authToken = NULL /* memory is owned elsewhere.*/;
    json_setenv(FossilJsonKeys.authToken, NULL);
  }
  return json_page_whoami();
}

/*
** Implementation of the /json/anonymousPassword page.
*/
cson_value * json_page_anon_password(void){
  cson_value * v = cson_value_new_object();
  cson_object * o = cson_value_get_object(v);
  unsigned const int seed = captcha_seed();
  char const * zCaptcha = captcha_decode(seed, 0);
  cson_object_set(o, "seed",
                  cson_value_new_integer( (cson_int_t)seed )
                  );
  cson_object_set(o, "password",
                  cson_value_new_string( zCaptcha, strlen(zCaptcha) )
                  );
  return v;
}



/*
** Implements the /json/whoami page/command.
*/
cson_value * json_page_whoami(void){
  cson_value * payload = NULL;
  cson_object * obj = NULL;
  Stmt q;
  if(!g.json.authToken && g.userUid==0){
      /* assume we just logged out. */
      db_prepare(&q, "SELECT login, cap FROM user WHERE login='nobody'");
  }
  else{
      db_prepare(&q, "SELECT login, cap FROM user WHERE uid=%d",
                 g.userUid);
  }
  if( db_step(&q)==SQLITE_ROW ){

    /* reminder: we don't use g.zLogin because it's 0 for the guest
       user and the HTML UI appears to currently allow the name to be
       changed (but doing so would break other code). */
    char const * str;
    payload = cson_value_new_object();
    obj = cson_value_get_object(payload);
    str = (char const *)sqlite3_column_text(q.pStmt,0);
    if( str ){
      cson_object_set( obj, "name",
                       cson_value_new_string(str,strlen(str)) );
    }
    str = (char const *)sqlite3_column_text(q.pStmt,1);
    if( str ){
      cson_object_set( obj, "capabilities",
                       cson_value_new_string(str,strlen(str)) );
    }
    if( g.json.authToken ){
      cson_object_set( obj, "authToken", g.json.authToken );
    }
  }else{
    g.json.resultCode = FSL_JSON_E_RESOURCE_NOT_FOUND;
  }
  db_finalize(&q);
  return payload;
}
#endif /* FOSSIL_ENABLE_JSON */
Added src/json_query.c.
































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#include "config.h"
#include "json_query.h"

#if INTERFACE
#include "json_detail.h"
#endif


/*
** Implementation of the /json/query page.
**
** Requires admin privileges. Intended primarily to assist me in
** coming up with JSON output structures for pending features.
**
** Options/parameters:
**
** sql=string - a SELECT statement
**
** format=string 'a' means each row is an Array of values, 'o'
** (default) creates each row as an Object.
**
** TODO: in CLI mode (only) use -S FILENAME to read the sql
** from a file.
*/
cson_value * json_page_query(void){
  char const * zSql = NULL;
  cson_value * payV;
  char const * zFmt;
  Stmt q = empty_Stmt;
  int check;
  if(!g.perm.Admin && !g.perm.Setup){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'a' or 's' privileges.");
    return NULL;
  }

  if( cson_value_is_string(g.json.reqPayload.v) ){
    zSql = cson_string_cstr(cson_value_get_string(g.json.reqPayload.v));
  }else{
    zSql = json_find_option_cstr2("sql",NULL,"s",2);
  }

  if(!zSql || !*zSql){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "'sql' (-s) argument is missing.");
    return NULL;
  }

  zFmt = json_find_option_cstr2("format",NULL,"f",3);
  if(!zFmt) zFmt = "o";
  db_prepare(&q,"%s", zSql/*safe-for-%s*/);
  if( 0 == sqlite3_column_count( q.pStmt ) ){
      json_set_err(FSL_JSON_E_USAGE,
                   "Input query has no result columns. "
                   "Only SELECT-like queries are supported.");
      db_finalize(&q);
      return NULL;
  }
  switch(*zFmt){
    case 'a':
      check = cson_sqlite3_stmt_to_json(q.pStmt, &payV, 0);
      break;
    case 'o':
    default:
      check = cson_sqlite3_stmt_to_json(q.pStmt, &payV, 1);
  };
  db_finalize(&q);
  if(0 != check){
    json_set_err(FSL_JSON_E_UNKNOWN,
                 "Conversion to JSON failed with cson code #%d (%s).",
                 check, cson_rc_string(check));
    assert(NULL==payV);
  }
  return payV;

}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_report.c.







































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#include "config.h"
#include "json_report.h"

#if INTERFACE
#include "json_detail.h"
#endif


static cson_value * json_report_create(void);
static cson_value * json_report_get(void);
static cson_value * json_report_list(void);
static cson_value * json_report_run(void);
static cson_value * json_report_save(void);

/*
** Mapping of /json/report/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Report[] = {
{"create", json_report_create, 0},
{"get", json_report_get, 0},
{"list", json_report_list, 0},
{"run", json_report_run, 0},
{"save", json_report_save, 0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};
/*
** Implementation of the /json/report page.
**
**
*/
cson_value * json_page_report(void){
  if(!g.perm.RdTkt && !g.perm.NewTkt ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'r' or 'n' permissions.");
    return NULL;
  }
  return json_page_dispatch_helper(JsonPageDefs_Report);
}

/*
** Searches the environment for a "report" parameter
** (CLI: -report/-r #).
**
** If one is not found and argPos is >0 then json_command_arg()
** is checked.
**
** Returns >0 (the report number) on success .
*/
static int json_report_get_number(int argPos){
  int nReport = json_find_option_int("report",NULL,"r",-1);
  if( (nReport<=0) && cson_value_is_integer(g.json.reqPayload.v)){
    nReport = cson_value_get_integer(g.json.reqPayload.v);
  }
  if( (nReport <= 0) && (argPos>0) ){
    char const * arg = json_command_arg(argPos);
    if(arg && fossil_isdigit(*arg)) {
      nReport = atoi(arg);
    }
  }
  return nReport;
}

static cson_value * json_report_create(void){
  json_set_err(FSL_JSON_E_NYI, NULL);
  return NULL;
}

static cson_value * json_report_get(void){
  int nReport;
  Stmt q = empty_Stmt;
  cson_value * pay = NULL;

  if(!g.perm.TktFmt){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 't' privileges.");
    return NULL;
  }
  nReport = json_report_get_number(3);
  if(nReport <=0){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "Missing or invalid 'report' (-r) parameter.");
    return NULL;
  }

  db_prepare(&q,"SELECT rn AS report,"
             " owner AS owner,"
             " title AS title,"
             " cast(strftime('%%s',mtime) as int) as timestamp,"
             " cols as columns,"
             " sqlcode as sqlCode"
             " FROM reportfmt"
             " WHERE rn=%d",
             nReport);
  if( SQLITE_ROW != db_step(&q) ){
    db_finalize(&q);
    json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
                 "Report #%d not found.", nReport);
    return NULL;
  }
  pay = cson_sqlite3_row_to_object(q.pStmt);
  db_finalize(&q);
  return pay;
}

/*
** Impl of /json/report/list.
*/
static cson_value * json_report_list(void){
  Blob sql = empty_blob;
  cson_value * pay = NULL;
  if(!g.perm.RdTkt){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'r' privileges.");
    return NULL;
  }
  blob_append(&sql, "SELECT"
              " rn AS report,"
              " title as title,"
              " owner as owner"
              " FROM reportfmt"
              " WHERE 1"
              " ORDER BY title",
              -1);
  pay = json_sql_to_array_of_obj(&sql, NULL, 1);
  if(!pay){
    json_set_err(FSL_JSON_E_UNKNOWN,
                 "Quite unexpected: no ticket reports found.");
  }
  return pay;
}

/*
** Impl for /json/report/run
**
** Options/arguments:
**
** report=int (CLI: -report # or -r #) is the report number to run.
**
** limit=int (CLI: -limit # or -n #) -n is for compat. with other commands.
**
** format=a|o Specifies result format: a=each row is an arry, o=each
** row is an object.  Default=o.
*/
static cson_value * json_report_run(void){
  int nReport;
  Stmt q = empty_Stmt;
  cson_object * pay = NULL;
  cson_array * tktList = NULL;
  char const * zFmt;
  char * zTitle = NULL;
  Blob sql = empty_blob;
  int limit = 0;
  cson_value * colNames = NULL;
  int i;

  if(!g.perm.RdTkt){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'r' privileges.");
    return NULL;
  }
  nReport = json_report_get_number(3);
  if(nReport <=0){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                 "Missing or invalid 'number' (-n) parameter.");
    goto error;
  }
  zFmt = json_find_option_cstr2("format",NULL,"f",3);
  if(!zFmt) zFmt = "o";
  db_prepare(&q,
             "SELECT sqlcode, "
             " title"
             " FROM reportfmt"
             " WHERE rn=%d",
             nReport);
  if(SQLITE_ROW != db_step(&q)){
    json_set_err(FSL_JSON_E_INVALID_ARGS,
                 "Report number %d not found.",
                 nReport);
    db_finalize(&q);
    goto error;
  }

  limit = json_find_option_int("limit",NULL,"n",-1);


  /* Copy over report's SQL...*/
  blob_append(&sql, db_column_text(&q,0), -1);
  zTitle = mprintf("%s", db_column_text(&q,1));
  db_finalize(&q);
  db_prepare(&q, "%s", blob_sql_text(&sql));

  /** Build the response... */
  pay = cson_new_object();

  cson_object_set(pay, "report", json_new_int(nReport));
  cson_object_set(pay, "title", json_new_string(zTitle));
  if(limit>0){
    cson_object_set(pay, "limit", json_new_int((limit<0) ? 0 : limit));
  }
  free(zTitle);
  zTitle = NULL;

  if(g.perm.TktFmt){
    cson_object_set(pay, "sqlcode",
                    cson_value_new_string(blob_str(&sql),
                                          (unsigned int)blob_size(&sql)));
  }
  blob_reset(&sql);

  colNames = cson_sqlite3_column_names(q.pStmt);
  cson_object_set( pay, "columnNames", colNames);
  for( i = 0 ; ((limit>0) ?(i < limit) : 1)
         && (SQLITE_ROW == db_step(&q));
       ++i){
    cson_value * row = ('a'==*zFmt)
      ? cson_sqlite3_row_to_array(q.pStmt)
      : cson_sqlite3_row_to_object2(q.pStmt,
                                    cson_value_get_array(colNames));
    ;
    if(row && !tktList){
      tktList = cson_new_array();
    }
    cson_array_append(tktList, row);
  }
  db_finalize(&q);
  cson_object_set(pay, "tickets",
                  tktList ? cson_array_value(tktList) : cson_value_null());

  goto end;

  error:
  assert(0 != g.json.resultCode);
  cson_value_free( cson_object_value(pay) );
  pay = NULL;
  end:

  return pay ? cson_object_value(pay) : NULL;

}

static cson_value * json_report_save(void){
  return NULL;
}
#endif /* FOSSIL_ENABLE_JSON */
Added src/json_status.c.
































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2013 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#include "config.h"
#include "json_status.h"

#if INTERFACE
#include "json_detail.h"
#endif

/*
Reminder to check if a column exists:

PRAGMA table_info(table_name)

and search for a row where the 'name' field matches.

That assumes, of course, that table_info()'s output format
is stable.
*/

/*
** Implementation of the /json/status page.
**
*/
cson_value * json_page_status(){
  Stmt q = empty_Stmt;
  cson_object * oPay;
  /*cson_object * files;*/
  int vid, nErr = 0;
  cson_object * tmpO;
  char * zTmp;
  i64 iMtime;
  cson_array * aFiles;

  if(!db_open_local(0)){
    json_set_err(FSL_JSON_E_DB_NEEDS_CHECKOUT, NULL);
    return NULL;
  }
  oPay = cson_new_object();
  cson_object_set(oPay, "repository",
                  json_new_string(db_repository_filename()));
  cson_object_set(oPay, "localRoot",
                  json_new_string(g.zLocalRoot));
  vid = db_lget_int("checkout", 0);
  if(!vid){
      json_set_err( FSL_JSON_E_UNKNOWN, "Can this even happen?" );
      return 0;
  }
  vfile_check_signature(vid, 0);
  /* TODO: dupe show_common_info() state */
  tmpO = cson_new_object();
  cson_object_set(oPay, "checkout", cson_object_value(tmpO));

  zTmp = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
  cson_object_set(tmpO, "uuid", json_new_string(zTmp) );
  free(zTmp);

  cson_object_set( tmpO, "tags", json_tags_for_checkin_rid(vid, 0) );

  /* FIXME: optimize the datetime/timestamp queries into 1 query. */
  zTmp = db_text(0, "SELECT datetime(mtime) || "
                 "' UTC' FROM event WHERE objid=%d",
                 vid);
  cson_object_set(tmpO, "datetime", json_new_string(zTmp));
  free(zTmp);
  iMtime = db_int64(0, "SELECT CAST(strftime('%%s',mtime) AS INTEGER) "
                    "FROM event WHERE objid=%d", vid);
  cson_object_set(tmpO, "timestamp",
                  cson_value_new_integer((cson_int_t)iMtime));
#if 0
    /* TODO: add parent artifact info */
  tmpO = cson_new_object();
  cson_object_set( oPay, "parent", cson_object_value(tmpO) );
  cson_object_set( tmpO, "uuid", TODO );
  cson_object_set( tmpO, "timestamp", TODO );
#endif

  /* Now get the list of non-pristine files... */
  aFiles = cson_new_array();
  cson_object_set( oPay, "files", cson_array_value( aFiles ) );

  db_prepare(&q,
    "SELECT pathname, deleted, chnged, rid, "
    "     coalesce(origname!=pathname,0), origname"
    "  FROM vfile "
    " WHERE is_selected(id)"
    "   AND (chnged OR deleted OR rid=0 OR pathname!=origname) ORDER BY 1"
  );
  while( db_step(&q)==SQLITE_ROW ){
    cson_array *aStatuses = NULL;
    const char *zPathname = db_column_text(&q,0);
    int isDeleted = db_column_int(&q, 1);
    int isChnged = db_column_int(&q,2);
    int isNew = db_column_int(&q,3)==0;
    int isRenamed = db_column_int(&q,4);
    cson_object * oFile;
    char const * zStatus = "???";
    char * zFullName = mprintf("%s%s", g.zLocalRoot, zPathname);
    if( isDeleted ){
      zStatus = "deleted";
    }else if( isNew ){
      zStatus = "new" /* maintenance reminder: MUST come
                         BEFORE the isChnged checks. */;
    }else if( !file_isfile_or_link(zFullName) ){
      if( file_access(zFullName, F_OK)==0 ){
        zStatus = "notAFile";
        ++nErr;
      }else{
        zStatus = "missing";
        ++nErr;
      }
    }else if( 2==isChnged ){
      zStatus = "updatedByMerge";
    }else if( 3==isChnged ){
      zStatus = "addedByMerge";
    }else if( 4==isChnged ){
      zStatus = "updatedByIntegrate";
    }else if( 5==isChnged ){
      zStatus = "addedByIntegrate";
    }else if( 1==isChnged ){
      if( file_contains_merge_marker(zFullName) ){
        zStatus = "conflict";
      }else{
        zStatus = "edited";
      }
    }
    oFile = cson_new_object();
    cson_array_append( aFiles, cson_object_value(oFile) );
    if( isRenamed ){
      if( *zStatus!='?' ){
        aStatuses = cson_new_array();
        cson_object_set( oFile, "status", cson_array_value( aStatuses ) );
        cson_array_append(aStatuses,
            cson_value_new_string(zStatus, strlen(zStatus)));
        cson_array_append(aStatuses, cson_value_new_string("renamed", 7));
      }else{
        zStatus = "renamed";
      }
      cson_object_set( oFile, "priorName",
          cson_sqlite3_column_to_value(q.pStmt,5));
    }
    /* optimization potential: move these keys into cson_strings
       to take advantage of refcounting. */
    cson_object_set( oFile, "name", json_new_string( zPathname ) );
    cson_object_set( oFile, "status", aStatuses!=NULL ?
        cson_array_value(aStatuses) : json_new_string( zStatus ) );

    free(zFullName);
  }
  cson_object_set( oPay, "errorCount", json_new_int( nErr ) );
  db_finalize(&q);

#if 0
  /* TODO: add "merged with" status.  First need (A) to decide on a
     structure and (B) to set up some tests for the multi-merge
     case.*/
  db_prepare(&q, "SELECT mhash, id FROM vmerge WHERE id<=0");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zLabel = "MERGED_WITH";
    switch( db_column_int(&q, 1) ){
      case -1:  zLabel = "CHERRYPICK ";  break;
      case -2:  zLabel = "BACKOUT    ";  break;
      case -4:  zLabel = "INTEGRATE  ";  break;
    }
    blob_append(report, zPrefix, nPrefix);
    blob_appendf(report, "%s %s\n", zLabel, db_column_text(&q, 0));
  }
  db_finalize(&q);
  if( nErr ){
    fossil_fatal("aborting due to prior errors");
  }
#endif
  return cson_object_value( oPay );
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_tag.c.































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_tag.h"

#if INTERFACE
#include "json_detail.h"
#endif


static cson_value * json_tag_add(void);
static cson_value * json_tag_cancel(void);
static cson_value * json_tag_find(void);
static cson_value * json_tag_list(void);
/*
** Mapping of /json/tag/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Tag[] = {
{"add", json_tag_add, 0},
{"cancel", json_tag_cancel, 0},
{"find", json_tag_find, 0},
{"list", json_tag_list, 0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};

/*
** Implements the /json/tag family of pages/commands.
**
*/
cson_value * json_page_tag(void){
  return json_page_dispatch_helper(&JsonPageDefs_Tag[0]);
}


/*
** Impl of /json/tag/add.
*/
static cson_value * json_tag_add(void){
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  char const * zName = NULL;
  char const * zCheckin = NULL;
  char fRaw = 0;
  char fPropagate = 0;
  char const * zValue = NULL;
  const char *zPrefix = NULL;

  if( !g.perm.Write ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'i' permissions.");
    return NULL;
  }
  fRaw = json_find_option_bool("raw",NULL,NULL,0);
  fPropagate = json_find_option_bool("propagate",NULL,NULL,0);
  zName = json_find_option_cstr("name",NULL,NULL);
  zPrefix = fRaw ? "" : "sym-";
  if(!zName || !*zName){
    if(!fossil_has_json()){
      zName = json_command_arg(3);
    }
    if(!zName || !*zName){
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "'name' parameter is missing.");
      return NULL;
    }
  }

  zCheckin = json_find_option_cstr("checkin",NULL,NULL);
  if( !zCheckin ){
    if(!fossil_has_json()){
      zCheckin = json_command_arg(4);
    }
    if(!zCheckin || !*zCheckin){
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "'checkin' parameter is missing.");
      return NULL;
    }
  }


  zValue = json_find_option_cstr("value",NULL,NULL);
  if(!zValue && !fossil_has_json()){
    zValue = json_command_arg(5);
  }

  db_begin_transaction();
  tag_add_artifact(zPrefix, zName, zCheckin, zValue,
                   1+fPropagate,NULL/*DateOvrd*/,NULL/*UserOvrd*/);
  db_end_transaction(0);

  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  cson_object_set(pay, "name", json_new_string(zName) );
  cson_object_set(pay, "value", (zValue&&*zValue)
                  ? json_new_string(zValue)
                  : cson_value_null());
  cson_object_set(pay, "propagate", cson_value_new_bool(fPropagate));
  cson_object_set(pay, "raw", cson_value_new_bool(fRaw));
  {
    Blob uu = empty_blob;
    int rc;
    blob_append(&uu, zName, -1);
    rc = name_to_uuid(&uu, 9, "*");
    if(0!=rc){
      json_set_err(FSL_JSON_E_UNKNOWN,
                   "Could not convert name back to artifact hash!");
      blob_reset(&uu);
      goto error;
    }
    cson_object_set(pay, "appliedTo", json_new_string(blob_buffer(&uu)));
    blob_reset(&uu);
  }

  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  cson_value_free(payV);
  payV = NULL;
  ok:
  return payV;
}


/*
** Impl of /json/tag/cancel.
*/
static cson_value * json_tag_cancel(void){
  char const * zName = NULL;
  char const * zCheckin = NULL;
  char fRaw = 0;
  const char *zPrefix = NULL;

  if( !g.perm.Write ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'i' permissions.");
    return NULL;
  }

  fRaw = json_find_option_bool("raw",NULL,NULL,0);
  zPrefix = fRaw ? "" : "sym-";
  zName = json_find_option_cstr("name",NULL,NULL);
  if(!zName || !*zName){
    if(!fossil_has_json()){
      zName = json_command_arg(3);
    }
    if(!zName || !*zName){
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "'name' parameter is missing.");
      return NULL;
    }
  }

  zCheckin = json_find_option_cstr("checkin",NULL,NULL);
  if( !zCheckin ){
    if(!fossil_has_json()){
      zCheckin = json_command_arg(4);
    }
    if(!zCheckin || !*zCheckin){
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "'checkin' parameter is missing.");
      return NULL;
    }
  }
  /* FIXME?: verify that the tag is currently active. We have no real
     error case unless we do that.
  */
  db_begin_transaction();
  tag_add_artifact(zPrefix, zName, zCheckin, NULL, 0, 0, 0);
  db_end_transaction(0);
  return NULL;
}


/*
** Impl of /json/tag/find.
*/
static cson_value * json_tag_find(void){
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  cson_value * listV = NULL;
  cson_array * list = NULL;
  char const * zName = NULL;
  char const * zType = NULL;
  char const * zType2 = NULL;
  char fRaw = 0;
  Stmt q = empty_Stmt;
  int limit = 0;
  int tagid = 0;

  if( !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' permissions.");
    return NULL;
  }
  zName = json_find_option_cstr("name",NULL,NULL);
  if(!zName || !*zName){
    if(!fossil_has_json()){
      zName = json_command_arg(3);
    }
    if(!zName || !*zName){
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "'name' parameter is missing.");
      return NULL;
    }
  }
  zType = json_find_option_cstr("type",NULL,"t");
  if(!zType || !*zType){
    zType = "*";
    zType2 = zType;
  }else{
    switch(*zType){
      case 'c': zType = "ci"; zType2 = "checkin"; break;
      case 'e': zType = "e"; zType2 = "event"; break;
      case 'w': zType = "w"; zType2 = "wiki"; break;
      case 't': zType = "t"; zType2 = "ticket"; break;
    }
  }

  limit = json_find_option_int("limit",NULL,"n",0);
  fRaw = json_find_option_bool("raw",NULL,NULL,0);

  tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='%s' || %Q",
                 fRaw ? "" : "sym-",
                 zName);

  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  cson_object_set(pay, "name", json_new_string(zName));
  cson_object_set(pay, "raw", cson_value_new_bool(fRaw));
  cson_object_set(pay, "type", json_new_string(zType2));
  cson_object_set(pay, "limit", json_new_int(limit));

#if 1
  if( tagid<=0 ){
    cson_object_set(pay,"artifacts", cson_value_null());
    json_warn(FSL_JSON_W_TAG_NOT_FOUND, "Tag not found.");
    return payV;
  }
#endif

  if( fRaw ){
    db_prepare(&q,
               "SELECT blob.uuid FROM tagxref, blob"
               " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
               "   AND tagxref.tagtype>0"
               "   AND blob.rid=tagxref.rid"
               "%s LIMIT %d",
               zName,
               (limit>0)?"":"--", limit
               );
    while( db_step(&q)==SQLITE_ROW ){
      if(!listV){
        listV = cson_value_new_array();
        list = cson_value_get_array(listV);
      }
      cson_array_append(list, cson_sqlite3_column_to_value(q.pStmt,0));
    }
    db_finalize(&q);
  }else{
    char const * zSqlBase = /*modified from timeline_query_for_tty()*/
      " SELECT"
#if 0
      "   blob.rid AS rid,"
#endif
      "   uuid AS uuid,"
      "   cast(strftime('%s',event.mtime) as int) AS timestamp,"
      "   coalesce(ecomment,comment) AS comment,"
      "   coalesce(euser,user) AS user,"
      "   CASE event.type"
      "     WHEN 'ci' THEN 'checkin'"
      "     WHEN 'w' THEN 'wiki'"
      "     WHEN 'e' THEN 'event'"
      "     WHEN 't' THEN 'ticket'"
      "     ELSE 'unknown'"
      "   END"
      "   AS eventType"
      " FROM event, blob"
      " WHERE blob.rid=event.objid"
      ;
    /* FIXME: re-add tags. */
    db_prepare(&q,
               "%s"
               "  AND event.type GLOB '%q'"
               "  AND blob.rid IN ("
               "    SELECT rid FROM tagxref"
               "      WHERE tagtype>0 AND tagid=%d"
               "  )"
               " ORDER BY event.mtime DESC"
               "%s LIMIT %d",
               zSqlBase /*safe-for-%s*/, zType, tagid,
               (limit>0)?"":"--", limit
               );
    listV = json_stmt_to_array_of_obj(&q, NULL);
    db_finalize(&q);
  }

  if(!listV) {
    listV = cson_value_null();
  }
  cson_object_set(pay, "artifacts", listV);
  return payV;
}


/*
** Impl for /json/tag/list
**
** TODOs:
**
** Add -type TYPE (ci, w, e, t)
*/
static cson_value * json_tag_list(void){
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  cson_value const * tagsVal = NULL;
  char const * zCheckin = NULL;
  char fRaw = 0;
  char fTicket = 0;
  Stmt q = empty_Stmt;

  if( !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' permissions.");
    return NULL;
  }

  fRaw = json_find_option_bool("raw",NULL,NULL,0);
  fTicket = json_find_option_bool("includeTickets","tkt","t",0);
  zCheckin = json_find_option_cstr("checkin",NULL,NULL);
  if( !zCheckin ){
    zCheckin = json_command_arg( g.json.dispatchDepth + 1);
    if( !zCheckin && cson_value_is_string(g.json.reqPayload.v) ){
      zCheckin = cson_string_cstr(cson_value_get_string(g.json.reqPayload.v));
      assert(zCheckin);
    }
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  cson_object_set(pay, "raw", cson_value_new_bool(fRaw) );
  if( zCheckin ){
    /**
       Tags for a specific check-in. Output format:

       RAW mode:

       {
           "sym-tagname": (value || null),
           ...other tags...
       }

       Non-raw:

       {
          "tagname": (value || null),
          ...other tags...
       }
    */
    cson_value * objV = NULL;
    cson_object * obj = NULL;
    int const rid = name_to_rid(zCheckin);
    if(0==rid){
      json_set_err(FSL_JSON_E_UNRESOLVED_UUID,
                   "Could not find artifact for check-in [%s].",
                   zCheckin);
      goto error;
    }
    cson_object_set(pay, "checkin", json_new_string(zCheckin));
    db_prepare(&q,
               "SELECT tagname, value FROM tagxref, tag"
               " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
               "   AND tagtype>%d"
               " ORDER BY tagname",
               rid,
               fRaw ? -1 : 0
               );
    while( SQLITE_ROW == db_step(&q) ){
      const char *zName = db_column_text(&q, 0);
      const char *zValue = db_column_text(&q, 1);
      if( fRaw==0 ){
        if( 0!=strncmp(zName, "sym-", 4) ) continue;
        zName += 4;
        assert( *zName );
      }
      if(NULL==objV){
        objV = cson_value_new_object();
        obj = cson_value_get_object(objV);
        tagsVal = objV;
        cson_object_set( pay, "tags", objV );
      }
      if( zValue && zValue[0] ){
        cson_object_set( obj, zName, json_new_string(zValue) );
      }else{
        cson_object_set( obj, zName, cson_value_null() );
      }
    }
    db_finalize(&q);
  }else{/* all tags */
    /* Output format:

    RAW mode:

    ["tagname", "sym-tagname2",...]

    Non-raw:

    ["tagname", "tagname2",...]

    i don't really like the discrepancy in the format but this list
    can get really long and (A) most tags don't have values, (B) i
    don't want to bloat it more, and (C) cson_object_set() is O(N)
    (N=current number of properties) because it uses an unsorted list
    internally (for memory reasons), so this can slow down appreciably
    on a long list. The culprit is really tkt- tags, as there is one
    for each ticket (941 in the main fossil repo as of this writing).
    */
    Blob sql = empty_blob;
    cson_value * arV = NULL;
    cson_array * ar = NULL;
    blob_append(&sql,
                "SELECT tagname FROM tag"
                " WHERE EXISTS(SELECT 1 FROM tagxref"
                "               WHERE tagid=tag.tagid"
                "                 AND tagtype>0)",
                -1
                );
    if(!fTicket){
      blob_append(&sql, " AND tagname NOT GLOB('tkt-*') ", -1);
    }
    blob_append(&sql,
                " ORDER BY tagname", -1);
    db_prepare(&q, "%s", blob_sql_text(&sql));
    blob_reset(&sql);
    cson_object_set(pay, "includeTickets", cson_value_new_bool(fTicket) );
    while( SQLITE_ROW == db_step(&q) ){
      const char *zName = db_column_text(&q, 0);
      if(NULL==arV){
        arV = cson_value_new_array();
        ar = cson_value_get_array(arV);
        cson_object_set(pay, "tags", arV);
        tagsVal = arV;
      }
      else if( !fRaw && (0==strncmp(zName, "sym-", 4))){
        zName += 4;
        assert( *zName );
      }
      cson_array_append(ar, json_new_string(zName));
    }
    db_finalize(&q);
  }

  goto end;
  error:
  assert(0 != g.json.resultCode);
  cson_value_free(payV);
  payV = NULL;
  end:
  if( payV && !tagsVal ){
    cson_object_set( pay, "tags", cson_value_null() );
  }
  return payV;
}
#endif /* FOSSIL_ENABLE_JSON */
Added src/json_timeline.c.

































































































































































































































































































































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/

#include "VERSION.h"
#include "config.h"
#include "json_timeline.h"

#if INTERFACE
#include "json_detail.h"
#endif

static cson_value * json_timeline_branch(void);
static cson_value * json_timeline_ci(void);
static cson_value * json_timeline_ticket(void);
/*
** Mapping of /json/timeline/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Timeline[] = {
/* the short forms are only enabled in CLI mode, to avoid
   that we end up with HTTP clients using 3 different names
   for the same requests.
*/
{"branch", json_timeline_branch, 0},
{"checkin", json_timeline_ci, 0},
{"event" /* old name for technotes */, json_timeline_event, 0},
{"technote", json_timeline_event, 0},
{"ticket", json_timeline_ticket, 0},
{"wiki", json_timeline_wiki, 0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};


/*
** Implements the /json/timeline family of pages/commands. Far from
** complete.
**
*/
cson_value * json_page_timeline(void){
#if 0
  /* The original timeline code does not require 'h' access,
     but it arguably should. For JSON mode i think one could argue
     that History permissions are required.
  */
  if(! g.perm.Hyperlink && !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED, "Timeline requires 'h' or 'o' access.");
    return NULL;
  }
#endif
  return json_page_dispatch_helper(&JsonPageDefs_Timeline[0]);
}

/*
** Create a temporary table suitable for storing timeline data.
*/
static void json_timeline_temp_table(void){
  /* Field order MUST match that from json_timeline_query()!!! */
  static const char zSql[] =
    @ CREATE TEMP TABLE IF NOT EXISTS json_timeline(
    @   sortId INTEGER PRIMARY KEY,
    @   rid INTEGER,
    @   uuid TEXT,
    @   mtime INTEGER,
    @   timestampString TEXT,
    @   comment TEXT,
    @   user TEXT,
    @   isLeaf BOOLEAN,
    @   bgColor TEXT,
    @   eventType TEXT,
    @   tags TEXT,
    @   tagId INTEGER,
    @   brief TEXT
    @ )
  ;
  db_multi_exec("%s", zSql /*safe-for-%s*/);
}

/*
** Return a pointer to a constant string that forms the basis
** for a timeline query for the JSON interface. It MUST NOT
** be used in a formatted string argument.
*/
char const * json_timeline_query(void){
  /* Field order MUST match that from json_timeline_temp_table()!!! */
  static const char zBaseSql[] =
    @ SELECT
    @   NULL,
    @   blob.rid,
    @   uuid,
    @   CAST(strftime('%s',event.mtime) AS INTEGER),
    @   datetime(event.mtime),
    @   coalesce(ecomment, comment),
    @   coalesce(euser, user),
    @   blob.rid IN leaf,
    @   bgcolor,
    @   event.type,
    @   (SELECT group_concat(substr(tagname,5), ',') FROM tag, tagxref
    @     WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0) as tags,
    @   tagid as tagId,
    @   brief as brief
    @  FROM event JOIN blob
    @ WHERE blob.rid=event.objid
  ;
  return zBaseSql;
}

/*
** Internal helper to append query information if the
** "tag" or "branch" request properties (CLI: --tag/--branch)
** are set. Limits the query to a particular branch/tag.
**
** tag works like HTML mode's "t" option and branch works like HTML
** mode's "r" option. They are very similar, but subtly different -
** tag mode shows only entries with a given tag but branch mode can
** also reveal some with "related" tags (meaning they were merged into
** the requested branch, or back).
**
** pSql is the target blob to append the query [subset]
** to.
**
** Returns a positive value if it modifies pSql, 0 if it
** does not. It returns a negative value if the tag
** provided to the request was not found (pSql is not modified
** in that case).
**
** If payload is not NULL then on success its "tag" or "branch"
** property is set to the tag/branch name found in the request.
**
** Only one of "tag" or "branch" modes will work at a time, and if
** both are specified, which one takes precedence is unspecified.
*/
static signed char json_timeline_add_tag_branch_clause(Blob *pSql,
                                                       cson_object * pPayload){
  char const * zTag = NULL;
  char const * zBranch = NULL;
  char const * zMiOnly = NULL;
  char const * zUnhide = NULL;
  int tagid = 0;
  if(! g.perm.Read ){
    return 0;
  }
  zTag = json_find_option_cstr("tag",NULL,NULL);
  if(!zTag || !*zTag){
    zBranch = json_find_option_cstr("branch",NULL,NULL);
    if(!zBranch || !*zBranch){
      return 0;
    }
    zTag = zBranch;
    zMiOnly = json_find_option_cstr("mionly",NULL,NULL);
  }
  zUnhide = json_find_option_cstr("unhide",NULL,NULL);
  tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'",
                 zTag);
  if(tagid<=0){
    return -1;
  }
  if(pPayload){
    cson_object_set( pPayload, zBranch ? "branch" : "tag",
                     json_new_string(zTag) );
  }
  blob_appendf(pSql,
               " AND ("
               " EXISTS(SELECT 1 FROM tagxref"
               "        WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)",
               tagid);
  if(!zUnhide){
    blob_appendf(pSql,
               " AND NOT EXISTS(SELECT 1 FROM plink "
               "    JOIN tagxref ON rid=blob.rid"
               "    WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)",
               TAG_HIDDEN);
  }
  if(zBranch){
    /* from "r" flag code in page_timeline().*/
    blob_appendf(pSql,
                 " OR EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=cid"
                 "    WHERE tagid=%d AND tagtype>0 AND pid=blob.rid)",
                 tagid);
    if( !zUnhide ){
      blob_appendf(pSql,
                 " AND NOT EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=cid"
                 "    WHERE tagid=%d AND tagtype>0 AND pid=blob.rid)",
                 TAG_HIDDEN);
    }
    if( zMiOnly==0 ){
      blob_appendf(pSql,
                 " OR EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=pid"
                 "    WHERE tagid=%d AND tagtype>0 AND cid=blob.rid)",
                 tagid);
      if( !zUnhide ){
        blob_appendf(pSql,
                 " AND NOT EXISTS(SELECT 1 FROM plink JOIN tagxref ON rid=pid"
                 "    WHERE tagid=%d AND tagtype>0 AND cid=blob.rid)",
                 TAG_HIDDEN);
      }
    }
  }
  blob_append(pSql," ) ",3);
  return 1;
}
/*
** Helper for the timeline family of functions.  Possibly appends 1
** AND clause and an ORDER BY clause to pSql, depending on the state
** of the "after" ("a") or "before" ("b") environment parameters.
** This function gives "after" precedence over "before", and only
** applies one of them.
**
** Returns -1 if it adds a "before" clause, 1 if it adds
** an "after" clause, and 0 if adds only an order-by clause.
*/
static signed char json_timeline_add_time_clause(Blob *pSql){
  char const * zAfter = NULL;
  char const * zBefore = NULL;
  int rc = 0;
  zAfter = json_find_option_cstr("after",NULL,"a");
  zBefore = zAfter ? NULL : json_find_option_cstr("before",NULL,"b");

  if(zAfter&&*zAfter){
    while( fossil_isspace(*zAfter) ) ++zAfter;
    blob_appendf(pSql,
                 " AND event.mtime>=(SELECT julianday(%Q,fromLocal())) "
                 " ORDER BY event.mtime ASC ",
                 zAfter);
    rc = 1;
  }else if(zBefore && *zBefore){
    while( fossil_isspace(*zBefore) ) ++zBefore;
    blob_appendf(pSql,
                 " AND event.mtime<=(SELECT julianday(%Q,fromLocal())) "
                 " ORDER BY event.mtime DESC ",
                 zBefore);
    rc = -1;
  }else{
    blob_append(pSql, " ORDER BY event.mtime DESC ", -1);
    rc = 0;
  }
  return rc;
}

/*
** Tries to figure out a timeline query length limit base on
** environment parameters. If it can it returns that value,
** else it returns some statically defined default value.
**
** Never returns a negative value. 0 means no limit.
*/
static int json_timeline_limit(int defaultLimit){
  int limit = -1;
  if(!g.isHTTP){/* CLI mode */
    char const * arg = find_option("limit","n",1);
    if(arg && *arg){
      limit = atoi(arg);
    }
  }
  if( (limit<0) && fossil_has_json() ){
    limit = json_getenv_int("limit",-1);
  }
  return (limit<0) ? defaultLimit : limit;
}

/*
** Internal helper for the json_timeline_EVENTTYPE() family of
** functions. zEventType must be one of (ci, w, t). pSql must be a
** cleanly-initialized, empty Blob to store the sql in. If pPayload is
** not NULL it is assumed to be the pending response payload. If
** json_timeline_limit() returns non-0, this function adds a LIMIT
** clause to the generated SQL.
**
** If pPayload is not NULL then this might add properties to pPayload,
** reflecting options set in the request environment.
**
** Returns 0 on success. On error processing should not continue and
** the returned value should be used as g.json.resultCode.
*/
static int json_timeline_setup_sql( char const * zEventType,
                                    Blob * pSql,
                                    cson_object * pPayload ){
  int limit;
  assert( zEventType && *zEventType && pSql );
  json_timeline_temp_table();
  blob_append(pSql, "INSERT OR IGNORE INTO json_timeline ", -1);
  blob_append(pSql, json_timeline_query(), -1 );
  blob_appendf(pSql, " AND event.type IN(%Q) ", zEventType);
  if( json_timeline_add_tag_branch_clause(pSql, pPayload) < 0 ){
    return FSL_JSON_E_INVALID_ARGS;
  }
  json_timeline_add_time_clause(pSql);
  limit = json_timeline_limit(20);
  if(limit>0){
    blob_appendf(pSql,"LIMIT %d ",limit);
  }
  if(pPayload){
    cson_object_set(pPayload, "limit", json_new_int(limit));
  }
  return 0;
}


/*
** If any files are associated with the given rid, a JSON array
** containing information about them is returned (and is owned by the
** caller). If no files are associated with it then NULL is returned.
**
** flags may optionally be a bitmask of json_get_changed_files flags,
** or 0 for defaults.
*/
cson_value * json_get_changed_files(int rid, int flags){
  cson_value * rowsV = NULL;
  cson_array * rows = NULL;
  Stmt q = empty_Stmt;
  db_prepare(&q,
         "SELECT (pid<=0) AS isnew,"
         "       (fid==0) AS isdel,"
         "       (SELECT name FROM filename WHERE fnid=mlink.fnid) AS name,"
         "       (SELECT uuid FROM blob WHERE rid=fid) as uuid,"
         "       (SELECT uuid FROM blob WHERE rid=pid) as parent,"
         "       blob.size as size"
         "  FROM mlink"
         " LEFT JOIN blob ON blob.rid=fid"
         " WHERE mid=%d AND pid!=fid"
         " AND NOT mlink.isaux"
         " ORDER BY name /*sort*/",
         rid
         );
  while( (SQLITE_ROW == db_step(&q)) ){
    cson_value * rowV = cson_value_new_object();
    cson_object * row = cson_value_get_object(rowV);
    int const isNew = db_column_int(&q,0);
    int const isDel = db_column_int(&q,1);
    char * zDownload = NULL;
    if(!rowsV){
      rowsV = cson_value_new_array();
      rows = cson_value_get_array(rowsV);
    }
    cson_array_append( rows, rowV );
    cson_object_set(row, "name", json_new_string(db_column_text(&q,2)));
    cson_object_set(row, "uuid", json_new_string(db_column_text(&q,3)));
    if(!isNew && (flags & json_get_changed_files_ELIDE_PARENT)){
      cson_object_set(row, "parent", json_new_string(db_column_text(&q,4)));
    }
    cson_object_set(row, "size", json_new_int(db_column_int(&q,5)));

    cson_object_set(row, "state",
                  json_new_string(json_artifact_status_to_string(isNew,isDel)));
    zDownload = mprintf("/raw/%s?name=%s",
                        /* reminder: g.zBaseURL is of course not set
                           for CLI mode. */
                        db_column_text(&q,2),
                        db_column_text(&q,3));
    cson_object_set(row, "downloadPath", json_new_string(zDownload));
    free(zDownload);
  }
  db_finalize(&q);
  return rowsV;
}

static cson_value * json_timeline_branch(void){
  cson_value * pay = NULL;
  Blob sql = empty_blob;
  Stmt q = empty_Stmt;
  int limit = 0;
  if(!g.perm.Read){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' permissions.");
    return NULL;
  }
  json_timeline_temp_table();
  blob_append(&sql,
              "SELECT"
              "  blob.rid AS rid,"
              "  uuid AS uuid,"
              "  CAST(strftime('%s',event.mtime) AS INTEGER) as timestamp,"
              "  coalesce(ecomment, comment) as comment,"
              "  coalesce(euser, user) as user,"
              "  blob.rid IN leaf as isLeaf,"
              "  bgcolor as bgColor"
              " FROM event JOIN blob"
              " WHERE blob.rid=event.objid",
              -1);

  blob_append_sql(&sql,
               " AND event.type='ci'"
               " AND blob.rid IN (SELECT rid FROM tagxref"
               "  WHERE tagtype>0 AND tagid=%d AND srcid!=0)"
               " ORDER BY event.mtime DESC",
               TAG_BRANCH);
  limit = json_timeline_limit(20);
  if(limit>0){
    blob_append_sql(&sql," LIMIT %d ",limit);
  }
  db_prepare(&q,"%s", blob_sql_text(&sql));
  blob_reset(&sql);
  pay = json_stmt_to_array_of_obj(&q, NULL);
  db_finalize(&q);
  assert(NULL != pay);
  if(pay){
    /* get the array-form tags of each record. */
    cson_string * tags = cson_new_string("tags",4);
    cson_string * isLeaf = cson_new_string("isLeaf",6);
    cson_array * ar = cson_value_get_array(pay);
    cson_object * outer = NULL;
    unsigned int i = 0;
    unsigned int len = cson_array_length_get(ar);
    cson_value_add_reference( cson_string_value(tags) );
    cson_value_add_reference( cson_string_value(isLeaf) );
    for( ; i < len; ++i ){
      cson_object * row = cson_value_get_object(cson_array_get(ar,i));
      int rid = cson_value_get_integer(cson_object_get(row,"rid"));
      assert( rid > 0 );
      cson_object_set_s(row, tags, json_tags_for_checkin_rid(rid,0));
      cson_object_set_s(row, isLeaf,
                        json_value_to_bool(cson_object_get(row,"isLeaf")));
      cson_object_set(row, "rid", NULL)
        /* remove rid - we don't really want it to be public */;
    }
    cson_value_free( cson_string_value(tags) );
    cson_value_free( cson_string_value(isLeaf) );

    /* now we wrap the payload in an outer shell, for consistency with
       other /json/timeline/xyz APIs...
    */
    outer = cson_new_object();
    if(limit>0){
      cson_object_set( outer, "limit", json_new_int(limit) );
    }
    cson_object_set( outer, "timeline", pay );
    pay = cson_object_value(outer);
  }
  return pay;
}

/*
** Implementation of /json/timeline/ci.
**
** Still a few TODOs (like figuring out how to structure
** inheritance info).
*/
static cson_value * json_timeline_ci(void){
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  cson_value * tmp = NULL;
  cson_value * listV = NULL;
  cson_array * list = NULL;
  int check = 0;
  char verboseFlag;
  Stmt q = empty_Stmt;
  char warnRowToJsonFailed = 0;
  Blob sql = empty_blob;
  if( !g.perm.Hyperlink ){
    /* Reminder to self: HTML impl requires 'o' (Read)
       rights.
    */
    json_set_err( FSL_JSON_E_DENIED, "Check-in timeline requires 'h' access." );
    return NULL;
  }
  verboseFlag = json_find_option_bool("verbose",NULL,"v",0);
  if( !verboseFlag ){
    verboseFlag = json_find_option_bool("files",NULL,"f",0);
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  check = json_timeline_setup_sql( "ci", &sql, pay );
  if(check){
    json_set_err(check, "Query initialization failed.");
    goto error;
  }
#define SET(K) if(0!=(check=cson_object_set(pay,K,tmp))){ \
    json_set_err((cson_rc.AllocError==check)        \
                 ? FSL_JSON_E_ALLOC : FSL_JSON_E_UNKNOWN,\
                 "Object property insertion failed");     \
    goto error;\
  } (void)0

#if 0
  /* only for testing! */
  tmp = cson_value_new_string(blob_buffer(&sql),strlen(blob_buffer(&sql)));
  SET("timelineSql");
#endif
  db_multi_exec("%s", blob_buffer(&sql)/*safe-for-%s*/);
  blob_reset(&sql);
  db_prepare(&q, "SELECT "
             " rid AS rid"
             " FROM json_timeline"
             " ORDER BY rowid");
  listV = cson_value_new_array();
  list = cson_value_get_array(listV);
  tmp = listV;
  SET("timeline");
  while( (SQLITE_ROW == db_step(&q) )){
    /* convert each row into a JSON object...*/
    int const rid = db_column_int(&q,0);
    cson_value * rowV = json_artifact_for_ci(rid, verboseFlag);
    cson_object * row = cson_value_get_object(rowV);
    if(!row){
      if( !warnRowToJsonFailed ){
        warnRowToJsonFailed = 1;
        json_warn( FSL_JSON_W_ROW_TO_JSON_FAILED,
                "Could not convert at least one timeline result row to JSON." );
      }
      continue;
    }
    cson_array_append(list, rowV);
  }
#undef SET
  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  cson_value_free(payV);
  payV = NULL;
  ok:
  db_finalize(&q);
  return payV;
}

/*
** Implementation of /json/timeline/event.
**
*/
cson_value * json_timeline_event(void){
  /* This code is 95% the same as json_timeline_ci(), by the way. */
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  cson_array * list = NULL;
  int check = 0;
  Stmt q = empty_Stmt;
  Blob sql = empty_blob;
  if( !g.perm.RdWiki ){
    json_set_err( FSL_JSON_E_DENIED, "Event timeline requires 'j' access.");
    return NULL;
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  check = json_timeline_setup_sql( "e", &sql, pay );
  if(check){
    json_set_err(check, "Query initialization failed.");
    goto error;
  }

#if 0
  /* only for testing! */
  cson_object_set(pay, "timelineSql", cson_value_new_string(blob_buffer(&sql),
                  strlen(blob_buffer(&sql))));
#endif
  db_multi_exec("%s", blob_buffer(&sql) /*safe-for-%s*/);
  blob_reset(&sql);
  db_prepare(&q, "SELECT"
             /* For events, the name is generally more useful than
                the uuid, but the uuid is unambiguous and can be used
                with commands like 'artifact'. */
             " substr((SELECT tagname FROM tag AS tn "
             "   WHERE tn.tagid=json_timeline.tagId "
             "   AND tagname LIKE 'event-%%'),7) AS name,"
             " uuid as uuid,"
             " mtime AS timestamp,"
             " comment AS comment, "
             " user AS user,"
             " eventType AS eventType"
             " FROM json_timeline"
             " ORDER BY rowid");
  list = cson_new_array();
  json_stmt_to_array_of_obj(&q, list);
  cson_object_set(pay, "timeline", cson_array_value(list));
  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  cson_value_free(payV);
  payV = NULL;
  ok:
  db_finalize(&q);
  blob_reset(&sql);
  return payV;
}

/*
** Implementation of /json/timeline/wiki.
**
*/
cson_value * json_timeline_wiki(void){
  /* This code is 95% the same as json_timeline_ci(), by the way. */
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  cson_array * list = NULL;
  int check = 0;
  Stmt q = empty_Stmt;
  Blob sql = empty_blob;
  if( !g.perm.RdWiki && !g.perm.Read ){
    json_set_err( FSL_JSON_E_DENIED,
                  "Wiki timeline requires 'o' or 'j' access.");
    return NULL;
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  check = json_timeline_setup_sql( "w", &sql, pay );
  if(check){
    json_set_err(check, "Query initialization failed.");
    goto error;
  }

#if 0
  /* only for testing! */
  cson_object_set(pay, "timelineSql", cson_value_new_string(blob_buffer(&sql),
                  strlen(blob_buffer(&sql))));
#endif
  db_multi_exec("%s", blob_buffer(&sql) /*safe-for-%s*/);
  blob_reset(&sql);
  db_prepare(&q, "SELECT"
             " uuid AS uuid,"
             " mtime AS timestamp,"
#if 0
             " timestampString AS timestampString,"
#endif
             " comment AS comment, "
             " user AS user,"
             " eventType AS eventType"
#if 0
             /* can wiki pages have tags? */
             " tags AS tags," /*FIXME: split this into
                                a JSON array*/
             " tagId AS tagId,"
#endif
             " FROM json_timeline"
             " ORDER BY rowid");
  list = cson_new_array();
  json_stmt_to_array_of_obj(&q, list);
  cson_object_set(pay, "timeline", cson_array_value(list));
  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  cson_value_free(payV);
  payV = NULL;
  ok:
  db_finalize(&q);
  blob_reset(&sql);
  return payV;
}

/*
** Implementation of /json/timeline/ticket.
**
*/
static cson_value * json_timeline_ticket(void){
  /* This code is 95% the same as json_timeline_ci(), by the way. */
  cson_value * payV = NULL;
  cson_object * pay = NULL;
  cson_value * tmp = NULL;
  cson_value * listV = NULL;
  cson_array * list = NULL;
  int check = 0;
  Stmt q = empty_Stmt;
  Blob sql = empty_blob;
  if( !g.perm.RdTkt && !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Ticket timeline requires 'o' or 'r' access.");
    return NULL;
  }
  payV = cson_value_new_object();
  pay = cson_value_get_object(payV);
  check = json_timeline_setup_sql( "t", &sql, pay );
  if(check){
    json_set_err(check, "Query initialization failed.");
    goto error;
  }

  db_multi_exec("%s", blob_buffer(&sql) /*safe-for-%s*/);
#define SET(K) if(0!=(check=cson_object_set(pay,K,tmp))){ \
    json_set_err((cson_rc.AllocError==check)        \
                 ? FSL_JSON_E_ALLOC : FSL_JSON_E_UNKNOWN,      \
                 "Object property insertion failed."); \
    goto error;\
  } (void)0

#if 0
  /* only for testing! */
  tmp = cson_value_new_string(blob_buffer(&sql),strlen(blob_buffer(&sql)));
  SET("timelineSql");
#endif

  blob_reset(&sql);
  /*
    REMINDER/FIXME(?): we have both uuid (the change uuid?)  and
    ticketUuid (the actual ticket). This is different from the wiki
    timeline, where we only have the wiki page uuid.
   */
  db_prepare(&q, "SELECT rid AS rid,"
             " uuid AS uuid,"
             " mtime AS timestamp,"
#if 0
             " timestampString AS timestampString,"
#endif
             " user AS user,"
             " eventType AS eventType,"
             " comment AS comment,"
             " brief AS briefComment"
             " FROM json_timeline"
             " ORDER BY rowid");
  listV = cson_value_new_array();
  list = cson_value_get_array(listV);
  tmp = listV;
  SET("timeline");
  while( (SQLITE_ROW == db_step(&q) )){
    /* convert each row into a JSON object...*/
    int rc;
    int const rid = db_column_int(&q,0);
    Manifest * pMan = NULL;
    cson_value * rowV;
    cson_object * row;
    /*printf("rid=%d\n",rid);*/
    pMan = manifest_get(rid, CFTYPE_TICKET, 0);
    if(!pMan){
      /* this might be an attachment? I'm seeing this with
         rid 15380, uuid [1292fef05f2472108].

         /json/artifact/1292fef05f2472108 returns not-found,
         probably because we haven't added artifact/ticket
         yet(?).
      */
      continue;
    }

    rowV = cson_sqlite3_row_to_object(q.pStmt);
    row = cson_value_get_object(rowV);
    if(!row){
      manifest_destroy(pMan);
      json_warn( FSL_JSON_W_ROW_TO_JSON_FAILED,
                "Could not convert at least one timeline result row to JSON." );
      continue;
    }
    /* FIXME: certainly there's a more efficient way for use to get
       the ticket UUIDs?
    */
    cson_object_set(row,"ticketUuid",json_new_string(pMan->zTicketUuid));
    manifest_destroy(pMan);
    rc = cson_array_append( list, rowV );
    if( 0 != rc ){
      cson_value_free(rowV);
      g.json.resultCode = (cson_rc.AllocError==rc)
        ? FSL_JSON_E_ALLOC
        : FSL_JSON_E_UNKNOWN;
      goto error;
    }
  }
#undef SET
  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  cson_value_free(payV);
  payV = NULL;
  ok:
  blob_reset(&sql);
  db_finalize(&q);
  return payV;
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/json_user.c.






















































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_user.h"

#if INTERFACE
#include "json_detail.h"
#endif

static cson_value * json_user_get(void);
static cson_value * json_user_list(void);
static cson_value * json_user_save(void);

/*
** Mapping of /json/user/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_User[] = {
{"save", json_user_save, 0},
{"get", json_user_get, 0},
{"list", json_user_list, 0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};


/*
** Implements the /json/user family of pages/commands.
**
*/
cson_value * json_page_user(void){
  return json_page_dispatch_helper(&JsonPageDefs_User[0]);
}


/*
** Impl of /json/user/list. Requires admin/setup rights.
*/
static cson_value * json_user_list(void){
  cson_value * payV = NULL;
  Stmt q;
  if(!g.perm.Admin && !g.perm.Setup){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'a' or 's' privileges.");
    return NULL;
  }
  db_prepare(&q,"SELECT uid AS uid,"
             " login AS name,"
             " cap AS capabilities,"
             " info AS info,"
             " mtime AS timestamp"
             " FROM user ORDER BY login");
  payV = json_stmt_to_array_of_obj(&q, NULL);
  db_finalize(&q);
  if(NULL == payV){
    json_set_err(FSL_JSON_E_UNKNOWN,
                 "Could not convert user list to JSON.");
  }
  return payV;
}

/*
** Creates a new JSON Object based on the db state of
** the given user name. On error (no record found)
** it returns NULL, else the caller owns the returned
** object.
*/
static cson_value * json_load_user_by_name(char const * zName){
  cson_value * u = NULL;
  Stmt q;
  db_prepare(&q,"SELECT uid AS uid,"
             " login AS name,"
             " cap AS capabilities,"
             " info AS info,"
             " mtime AS timestamp"
             " FROM user"
             " WHERE login=%Q",
             zName);
  if( (SQLITE_ROW == db_step(&q)) ){
    u = cson_sqlite3_row_to_object(q.pStmt);
  }
  db_finalize(&q);
  return u;
}

/*
** Identical to json_load_user_by_name(), but expects a user ID.  Returns
** NULL if no user found with that ID.
*/
static cson_value * json_load_user_by_id(int uid){
  cson_value * u = NULL;
  Stmt q;
  db_prepare(&q,"SELECT uid AS uid,"
             " login AS name,"
             " cap AS capabilities,"
             " info AS info,"
             " mtime AS timestamp"
             " FROM user"
             " WHERE uid=%d",
             uid);
  if( (SQLITE_ROW == db_step(&q)) ){
    u = cson_sqlite3_row_to_object(q.pStmt);
  }
  db_finalize(&q);
  return u;
}


/*
** Impl of /json/user/get. Requires admin or setup rights.
*/
static cson_value * json_user_get(void){
  cson_value * payV = NULL;
  char const * pUser = NULL;
  if(!g.perm.Admin && !g.perm.Setup){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'a' or 's' privileges.");
    return NULL;
  }
  pUser = json_find_option_cstr2("name", NULL, NULL, g.json.dispatchDepth+1);
  if(!pUser || !*pUser){
    json_set_err(FSL_JSON_E_MISSING_ARGS,"Missing 'name' property.");
    return NULL;
  }
  payV = json_load_user_by_name(pUser);
  if(!payV){
    json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,"User not found.");
  }
  return payV;
}

/*
** Expects pUser to contain fossil user fields in JSON form: name,
** uid, info, capabilities, password.
**
** At least one of (name, uid) must be included. All others are
** optional and their db fields will not be updated if those fields
** are not included in pUser.
**
** If uid is specified then name may refer to a _new_ name
** for a user, otherwise the name must refer to an existing user.
** If uid=-1 then the name must be specified and a new user is
** created (fails if one already exists).
**
** If uid is not set, this function might modify pUser to contain the
** db-found (or inserted) user ID.
**
** On error g.json's error state is set and one of the FSL_JSON_E_xxx
** values from FossilJsonCodes is returned.
**
** On success the db record for the given user is updated.
**
** Requires either Admin, Setup, or Password access. Non-admin/setup
** users can only change their own information. Non-setup users may
** not modify the 's' permission. Admin users without setup
** permissions may not edit any other user who has the 's' permission.
**
*/
int json_user_update_from_json( cson_object * pUser ){
#define CSTR(X) cson_string_cstr(cson_value_get_string( cson_object_get(pUser, \
                                                                        X ) ))
  char const * zName = CSTR("name");
  char const * zNameNew = zName;
  char * zNameFree = NULL;
  char const * zInfo = CSTR("info");
  char const * zCap = CSTR("capabilities");
  char const * zPW = CSTR("password");
  cson_value const * forceLogout = cson_object_get(pUser, "forceLogout");
  int gotFields = 0;
#undef CSTR
  cson_int_t uid = cson_value_get_integer( cson_object_get(pUser, "uid") );
  char const tgtHasSetup = zCap && (NULL!=strchr(zCap, 's'));
  char tgtHadSetup = 0;
  Blob sql = empty_blob;
  Stmt q = empty_Stmt;

  if(uid<=0 && (!zName||!*zName)){
    return json_set_err(FSL_JSON_E_MISSING_ARGS,
                        "One of 'uid' or 'name' is required.");
  }else if(uid>0){
    zNameFree = db_text(NULL, "SELECT login FROM user WHERE uid=%d",uid);
    if(!zNameFree){
      return json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
                          "No login found for uid %d.", uid);
    }
    zName = zNameFree;
  }else if(-1==uid){
    /* try to create a new user */
    if(!g.perm.Admin && !g.perm.Setup){
      json_set_err(FSL_JSON_E_DENIED,
                   "Requires 'a' or 's' privileges.");
      goto error;
    }else if(!zName || !*zName){
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "No name specified for new user.");
      goto error;
    }else if( db_exists("SELECT 1 FROM user WHERE login=%Q", zName) ){
      json_set_err(FSL_JSON_E_RESOURCE_ALREADY_EXISTS,
                   "User %s already exists.", zName);
      goto error;
    }else{
      Stmt ins = empty_Stmt;
      db_unprotect(PROTECT_USER);
      db_prepare(&ins, "INSERT INTO user (login) VALUES(%Q)",zName);
      db_step( &ins );
      db_finalize(&ins);
      db_protect_pop();
      uid = db_int(0,"SELECT uid FROM user WHERE login=%Q", zName);
      assert(uid>0);
      zNameNew = zName;
      cson_object_set( pUser, "uid", cson_value_new_integer(uid) );
    }
  }else{
    uid = db_int(0,"SELECT uid FROM user WHERE login=%Q", zName);
    if(uid<=0){
      json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
                   "No login found for user [%s].", zName);
      goto error;
    }
    cson_object_set( pUser, "uid", cson_value_new_integer(uid) );
  }

  /* Maintenance note: all error-returns from here on out should go
     via 'goto error' in order to clean up.
  */

  if(uid != g.userUid){
    if(!g.perm.Admin && !g.perm.Setup){
      json_set_err(FSL_JSON_E_DENIED,
                   "Changing another user's data requires "
                   "'a' or 's' privileges.");
      goto error;
    }
  }
  /* check if the target uid currently has setup rights. */
  tgtHadSetup = db_int(0,"SELECT 1 FROM user where uid=%d"
                       " AND cap GLOB '*s*'", uid);

  if((tgtHasSetup || tgtHadSetup) && !g.perm.Setup){
    /*
      Do not allow a non-setup user to set or remove setup
      privileges. setup.c uses similar logic.
    */
    json_set_err(FSL_JSON_E_DENIED,
                 "Modifying 's' users/privileges requires "
                 "'s' privileges.");
    goto error;
  }
  /*
    Potential todo: do not allow a setup user to remove 's' from
    himself, to avoid locking himself out?
  */

  blob_append(&sql, "UPDATE user SET",-1 );
  blob_append(&sql, " mtime=cast(strftime('%s') AS INTEGER)", -1);

  if((uid>0) && zNameNew){
    /* Check for name change... */
    if(0!=strcmp(zName,zNameNew)){
      if( (!g.perm.Admin && !g.perm.Setup)
          && (zName != zNameNew)){
        json_set_err( FSL_JSON_E_DENIED,
                      "Modifying user names requires 'a' or 's' privileges.");
        goto error;
      }
      forceLogout = cson_value_true()
        /* reminders: 1) does not allocate.
           2) we do this because changing a name
           invalidates any login token because the old name
           is part of the token hash.
        */;
      blob_append_sql(&sql, ", login=%Q", zNameNew);
      ++gotFields;
    }
  }

  if( zCap && *zCap ){
    if(!g.perm.Admin || !g.perm.Setup){
      /* we "could" arguably silently ignore cap in this case. */
      json_set_err(FSL_JSON_E_DENIED,
                   "Changing capabilities requires 'a' or 's' privileges.");
      goto error;
    }
    blob_append_sql(&sql, ", cap=%Q", zCap);
    ++gotFields;
  }

  if( zPW && *zPW ){
    if(!g.perm.Admin && !g.perm.Setup && !g.perm.Password){
      json_set_err( FSL_JSON_E_DENIED,
                    "Password change requires 'a', 's', "
                    "or 'p' permissions.");
      goto error;
    }else{
#define TRY_LOGIN_GROUP 0 /* login group support is not yet implemented. */
#if !TRY_LOGIN_GROUP
      char * zPWHash = NULL;
      ++gotFields;
      zPWHash = sha1_shared_secret(zPW, zNameNew ? zNameNew : zName, NULL);
      blob_append_sql(&sql, ", pw=%Q", zPWHash);
      free(zPWHash);
#else
      ++gotFields;
      blob_append_sql(&sql, ", pw=coalesce(shared_secret(%Q,%Q,"
                   "(SELECT value FROM config WHERE name='project-code')))",
                   zPW, zNameNew ? zNameNew : zName);
      /* shared_secret() func is undefined? */
#endif
    }
  }

  if( zInfo ){
    blob_append_sql(&sql, ", info=%Q", zInfo);
    ++gotFields;
  }

  if((g.perm.Admin || g.perm.Setup)
     && forceLogout && cson_value_get_bool(forceLogout)){
    blob_append(&sql, ", cookie=NULL, cexpire=NULL", -1);
    ++gotFields;
  }

  if(!gotFields){
    json_set_err( FSL_JSON_E_MISSING_ARGS,
                  "Required user data are missing.");
    goto error;
  }
  assert(uid>0);
#if !TRY_LOGIN_GROUP
  blob_append_sql(&sql, " WHERE uid=%d", uid);
#else /* need name for login group support :/ */
  blob_append_sql(&sql, " WHERE login=%Q", zName);
#endif
#if 0
  puts(blob_str(&sql));
  cson_output_FILE( cson_object_value(pUser), stdout, NULL );
#endif
  db_unprotect(PROTECT_USER);
  db_prepare(&q, "%s", blob_sql_text(&sql));
  db_exec(&q);
  db_finalize(&q);
  db_protect_pop();
#if TRY_LOGIN_GROUP
  if( zPW || cson_value_get_bool(forceLogout) ){
    Blob groupSql = empty_blob;
    char * zErr = NULL;
    blob_append_sql(&groupSql,
      "INSERT INTO user(login)"
      "  SELECT %Q WHERE NOT EXISTS(SELECT 1 FROM user WHERE login=%Q);",
      zName, zName
    );
    blob_append(&groupSql, blob_str(&sql), blob_size(&sql));
    db_unprotect(PROTECT_USER);
    login_group_sql(blob_str(&groupSql), NULL, NULL, &zErr);
    db_protect_pop();
    blob_reset(&groupSql);
    if( zErr ){
      json_set_err( FSL_JSON_E_UNKNOWN,
                    "Repo-group update at least partially failed: %s",
                    zErr);
      free(zErr);
      goto error;
    }
  }
#endif /* TRY_LOGIN_GROUP */

#undef TRY_LOGIN_GROUP

  free( zNameFree );
  blob_reset(&sql);
  return 0;

  error:
  assert(0 != g.json.resultCode);
  free(zNameFree);
  blob_reset(&sql);
  return g.json.resultCode;
}


/*
** Impl of /json/user/save.
*/
static cson_value * json_user_save(void){
  /* try to get user info from GET/CLI args and construct
     a JSON form of it... */
  cson_object * u = cson_new_object();
  char const * str = NULL;
  int b = -1;
  int i = -1;
  int uid = -1;
  cson_value * payload = NULL;
  /* String properties... */
#define PROP(LK,SK) str = json_find_option_cstr(LK,NULL,SK);     \
  if(str){ cson_object_set(u, LK, json_new_string(str)); } (void)0
  PROP("name","n");
  PROP("password","p");
  PROP("info","i");
  PROP("capabilities","c");
#undef PROP
  /* Boolean properties... */
#define PROP(LK,DFLT) b = json_find_option_bool(LK,NULL,NULL,DFLT);     \
  if(DFLT!=b){ cson_object_set(u, LK, cson_value_new_bool(b ? 1 : 0)); } (void)0
  PROP("forceLogout",-1);
#undef PROP

#define PROP(LK,DFLT) i = json_find_option_int(LK,NULL,NULL,DFLT);   \
  if(DFLT != i){ cson_object_set(u, LK, cson_value_new_integer(i)); } (void)0
  PROP("uid",-99);
#undef PROP
  if( g.json.reqPayload.o ){
    cson_object_merge( u, g.json.reqPayload.o, CSON_MERGE_NO_RECURSE );
  }
  json_user_update_from_json( u );
  if(!g.json.resultCode){
    uid = cson_value_get_integer( cson_object_get(u, "uid") );
    assert((uid>0) && "Something went wrong in json_user_update_from_json()");
    payload = json_load_user_by_id(uid);
  }
  cson_free_object(u);
  return payload;
}
#endif /* FOSSIL_ENABLE_JSON */
Added src/json_wiki.c.

































































































































































































































































































































































































































































































































































































































































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#ifdef FOSSIL_ENABLE_JSON
/*
** Copyright (c) 2011-12 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*/
#include "VERSION.h"
#include "config.h"
#include "json_wiki.h"

#if INTERFACE
#include "json_detail.h"
#endif

static cson_value * json_wiki_create(void);
static cson_value * json_wiki_get(void);
static cson_value * json_wiki_list(void);
static cson_value * json_wiki_preview(void);
static cson_value * json_wiki_save(void);
static cson_value * json_wiki_diff(void);
/*
** Mapping of /json/wiki/XXX commands/paths to callbacks.
*/
static const JsonPageDef JsonPageDefs_Wiki[] = {
{"create", json_wiki_create, 0},
{"diff", json_wiki_diff, 0},
{"get", json_wiki_get, 0},
{"list", json_wiki_list, 0},
{"preview", json_wiki_preview, 0},
{"save", json_wiki_save, 0},
{"timeline", json_timeline_wiki,0},
/* Last entry MUST have a NULL name. */
{NULL,NULL,0}
};


/*
** Implements the /json/wiki family of pages/commands.
**
*/
cson_value * json_page_wiki(void){
  return json_page_dispatch_helper(JsonPageDefs_Wiki);
}

/*
** Returns the UUID for the given wiki blob RID, or NULL if not
** found. The returned string is allocated via db_text() and must be
** free()d by the caller.
*/
char * json_wiki_get_uuid_for_rid( int rid )
{
  return db_text(NULL,
             "SELECT b.uuid FROM tag t, tagxref x, blob b"
             " WHERE x.tagid=t.tagid AND t.tagname GLOB 'wiki-*' "
             " AND b.rid=x.rid AND b.rid=%d"
             " ORDER BY x.mtime DESC LIMIT 1",
             rid
             );
}

/*
** Tries to load a wiki page from the given rid creates a JSON object
** representation of it. If the page is not found then NULL is
** returned. If contentFormat is positive then the page content
** is HTML-ized using fossil's conventional wiki format, if it is
** negative then no parsing is performed, if it is 0 then the content
** is not returned in the response. If contentFormat is 0 then the
** contentSize reflects the number of bytes, not characters, stored in
** the page.
**
** The returned value, if not NULL, is-a JSON Object owned by the
** caller. If it returns NULL then it may set g.json's error state.
*/
cson_value * json_get_wiki_page_by_rid(int rid, int contentFormat){
  Manifest * pWiki = NULL;
  if( NULL == (pWiki = manifest_get(rid, CFTYPE_WIKI, 0)) ){
    json_set_err( FSL_JSON_E_UNKNOWN,
                  "Error reading wiki page from manifest (rid=%d).",
                  rid );
    return NULL;
  }else{
    unsigned int len = 0;
    cson_object * pay = cson_new_object();
    char const * zBody = pWiki->zWiki;
    char const * zFormat = NULL;
    char * zUuid = json_wiki_get_uuid_for_rid(rid);
    cson_object_set(pay,"name",json_new_string(pWiki->zWikiTitle));
    cson_object_set(pay,"uuid",json_new_string(zUuid));
    free(zUuid);
    zUuid = NULL;
    if( pWiki->nParent > 0 ){
      cson_object_set( pay, "parent", json_new_string(pWiki->azParent[0]) )
        /* Reminder: wiki pages do not branch and have only one parent
           (except for the initial version, which has no parents). */;
    }
    /*cson_object_set(pay,"rid",json_new_int((cson_int_t)rid));*/
    cson_object_set(pay,"user",json_new_string(pWiki->zUser));
    cson_object_set(pay,FossilJsonKeys.timestamp,
                    json_julian_to_timestamp(pWiki->rDate));
    if(0 == contentFormat){
      cson_object_set(pay,"size",
                      json_new_int((cson_int_t)(zBody?strlen(zBody):0)));
    }else{
      if( contentFormat>0 ){/*HTML-ize it*/
        Blob content = empty_blob;
        Blob raw = empty_blob;
        zFormat = "html";
        if(zBody && *zBody){
          const char *zMimetype = pWiki->zMimetype;
          if( zMimetype==0 ) zMimetype = "text/x-fossil-wiki";
          zMimetype = wiki_filter_mimetypes(zMimetype);
          blob_append(&raw,zBody,-1);
          if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
            wiki_convert(&raw,&content,0);
          }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
            markdown_to_html(&raw,0,&content);
          }else if( fossil_strcmp(zMimetype, "text/plain")==0 ){
            htmlize_to_blob(&content,blob_str(&raw),blob_size(&raw));
          }else{
            json_set_err( FSL_JSON_E_UNKNOWN,
                          "Unsupported MIME type '%s' for wiki page '%s'.",
                          zMimetype, pWiki->zWikiTitle );
            blob_reset(&content);
            blob_reset(&raw);
            cson_free_object(pay);
            manifest_destroy(pWiki);
            return NULL;
          }
          len = (unsigned int)blob_size(&content);
        }
        cson_object_set(pay,"size",json_new_int((cson_int_t)len));
        cson_object_set(pay,"content",
                        cson_value_new_string(blob_buffer(&content),len));
        blob_reset(&content);
        blob_reset(&raw);
      }else{/*raw format*/
        zFormat = "raw";
        len = zBody ? strlen(zBody) : 0;
        cson_object_set(pay,"size",json_new_int((cson_int_t)len));
        cson_object_set(pay,"content",cson_value_new_string(zBody,len));
      }
      cson_object_set(pay,"contentFormat",json_new_string(zFormat));

    }
    /*TODO: add 'T' (tag) fields*/
    /*TODO: add the 'A' card (file attachment) entries?*/
    manifest_destroy(pWiki);
    return cson_object_value(pay);
  }
}

/*
** Searches for the latest version of a wiki page with the given
** name. If found it behaves like json_get_wiki_page_by_rid(theRid,
** contentFormat), else it returns NULL.
*/
cson_value * json_get_wiki_page_by_name(char const * zPageName,
                                        int contentFormat){
  int rid;
  rid = db_int(0,
               "SELECT x.rid FROM tag t, tagxref x, blob b"
               " WHERE x.tagid=t.tagid AND t.tagname='wiki-%q' "
               " AND b.rid=x.rid"
               " ORDER BY x.mtime DESC LIMIT 1",
               zPageName
             );
  if( 0==rid ){
    json_set_err( FSL_JSON_E_RESOURCE_NOT_FOUND, "Wiki page not found: %s",
                  zPageName );
    return NULL;
  }
  return json_get_wiki_page_by_rid(rid, contentFormat);
}


/*
** Searches json_find_option_ctr("format",NULL,"f") for a flag.
** If not found it returns defaultValue else it returns a value
** depending on the first character of the format option:
**
** [h]tml = 1
** [n]one = 0
** [r]aw = -1
**
** The return value is intended for use with
** json_get_wiki_page_by_rid() and friends.
*/
int json_wiki_get_content_format_flag( int defaultValue ){
  int contentFormat = defaultValue;
  char const * zFormat = json_find_option_cstr("format",NULL,"f");
  if( !zFormat || !*zFormat ){
    return contentFormat;
  }
  else if('r'==*zFormat){
    contentFormat = -1;
  }
  else if('h'==*zFormat){
    contentFormat = 1;
  }
  else if('n'==*zFormat){
    contentFormat = 0;
  }
  return contentFormat;
}

/*
** Helper for /json/wiki/get and /json/wiki/preview. At least one of
** zPageName (wiki page name) or zSymname must be set to a
** non-empty/non-NULL value. zSymname takes precedence.  On success
** the result of one of json_get_wiki_page_by_rid() or
** json_get_wiki_page_by_name() will be returned (owned by the
** caller). On error g.json's error state is set and NULL is returned.
*/
static cson_value * json_wiki_get_by_name_or_symname(char const * zPageName,
                                                     char const * zSymname,
                                                     int contentFormat ){
  if(!zSymname || !*zSymname){
    return json_get_wiki_page_by_name(zPageName, contentFormat);
  }else{
    int rid = symbolic_name_to_rid( zSymname ? zSymname : zPageName, "w" );
    if(rid<0){
      json_set_err(FSL_JSON_E_AMBIGUOUS_UUID,
                   "UUID [%s] is ambiguous.", zSymname);
      return NULL;
    }else if(rid==0){
      json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
                   "UUID [%s] does not resolve to a wiki page.", zSymname);
      return NULL;
    }else{
      return json_get_wiki_page_by_rid(rid, contentFormat);
    }
  }
}

/*
** Implementation of /json/wiki/get.
**
*/
static cson_value * json_wiki_get(void){
  char const * zPageName;
  char const * zSymName = NULL;
  int contentFormat = -1;
  if( !g.perm.RdWiki && !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'o' or 'j' access.");
    return NULL;
  }
  zPageName = json_find_option_cstr2("name",NULL,"n",g.json.dispatchDepth+1);

  zSymName = json_find_option_cstr("uuid",NULL,"u");

  if((!zPageName||!*zPageName) && (!zSymName || !*zSymName)){
    json_set_err(FSL_JSON_E_MISSING_ARGS,
            "At least one of the 'name' or 'uuid' arguments must be provided.");
    return NULL;
  }

  /* TODO: see if we have a page named zPageName. If not, try to resolve
     zPageName as a UUID.
  */

  contentFormat = json_wiki_get_content_format_flag(contentFormat);
  return json_wiki_get_by_name_or_symname( zPageName, zSymName, contentFormat );
}

/*
** Implementation of /json/wiki/preview.
*/
static cson_value * json_wiki_preview(void){
  char const * zContent = NULL;
  char const * zMime = NULL;
  cson_string * sContent = NULL;
  cson_value * pay = NULL;
  Blob contentOrig = empty_blob;
  Blob contentHtml = empty_blob;
  if( !g.perm.WrWiki ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'k' access.");
    return NULL;
  }

  if(g.json.reqPayload.o){
    sContent = cson_value_get_string(
                  cson_object_get(g.json.reqPayload.o, "body"));
    zMime = cson_value_get_cstr(cson_object_get(g.json.reqPayload.o,
                                                "mimetype"));
  }else{
    sContent = cson_value_get_string(g.json.reqPayload.v);
  }
  if(!sContent) {
    json_set_err(FSL_JSON_E_MISSING_ARGS,
                "The 'payload' property must be either a string containing the "
                "Fossil wiki code to preview or an object with body + mimetype "
                "properties.");
    return NULL;
  }
  zContent = cson_string_cstr(sContent);
  blob_append( &contentOrig, zContent, (int)cson_string_length_bytes(sContent));
  zMime = wiki_filter_mimetypes(zMime);
  if( 0==fossil_strcmp(zMime, "text/x-markdown") ){
    markdown_to_html(&contentOrig, 0, &contentHtml);
  }else if( 0==fossil_strcmp(zMime, "text/plain") ){
    blob_append(&contentHtml, "<pre class='textPlain'>", -1);
    blob_append(&contentHtml, blob_str(&contentOrig), blob_size(&contentOrig));
    blob_append(&contentHtml, "</pre>", -1);
  }else{
    wiki_convert( &contentOrig, &contentHtml, 0 );
  }
  blob_reset( &contentOrig );
  pay = cson_value_new_string( blob_str(&contentHtml),
                               (unsigned int)blob_size(&contentHtml));
  blob_reset( &contentHtml );
  return pay;
}


/*
** Internal impl of /wiki/save and /wiki/create. If createMode is 0
** and the page already exists then a
** FSL_JSON_E_RESOURCE_ALREADY_EXISTS error is triggered.  If
** createMode is false then the FSL_JSON_E_RESOURCE_NOT_FOUND is
** triggered if the page does not already exists.
**
** Note that the error triggered when createMode==0 and no such page
** exists is rather arbitrary - we could just as well create the entry
** here if it doesn't already exist. With that, save/create would
** become one operation. That said, i expect there are people who
** would categorize such behaviour as "being too clever" or "doing too
** much automatically" (and i would likely agree with them).
**
** If allowCreateIfNotExists is true then this function will allow a new
** page to be created even if createMode is false.
*/
static cson_value * json_wiki_create_or_save(char createMode,
                                             char allowCreateIfNotExists){
  Blob content = empty_blob;  /* wiki  page content */
  cson_value * nameV;         /* wiki page name */
  char const * zPageName;     /* cstr form of page name */
  cson_value * contentV;      /* passed-in content */
  cson_value * emptyContent = NULL;  /* placeholder for empty content. */
  cson_value * payV = NULL;   /* payload/return value */
  cson_string const * jstr = NULL;  /* temp for cson_value-to-cson_string
                                       conversions. */
  char const * zMimeType = 0;
  unsigned int contentLen = 0;
  int rid;
  if( (createMode && !g.perm.NewWiki)
      || (!createMode && !g.perm.WrWiki)){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires '%c' permissions.",
                 (createMode ? 'f' : 'k'));
    return NULL;
  }
  nameV = json_req_payload_get("name");
  if(!nameV){
    json_set_err( FSL_JSON_E_MISSING_ARGS,
                  "'name' parameter is missing.");
    return NULL;
  }
  zPageName = cson_string_cstr(cson_value_get_string(nameV));
  if(!zPageName || !*zPageName){
    json_set_err(FSL_JSON_E_INVALID_ARGS,
                 "'name' parameter must be a non-empty string.");
    return NULL;
  }
  rid = db_int(0,
     "SELECT x.rid FROM tag t, tagxref x"
     " WHERE x.tagid=t.tagid AND t.tagname='wiki-%q'"
     " ORDER BY x.mtime DESC LIMIT 1",
     zPageName
  );

  if(rid){
    if(createMode){
      json_set_err(FSL_JSON_E_RESOURCE_ALREADY_EXISTS,
                   "Wiki page '%s' already exists.",
                   zPageName);
      goto error;
    }
  }else if(!createMode && !allowCreateIfNotExists){
    json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
                 "Wiki page '%s' not found.",
                 zPageName);
    goto error;
  }

  contentV = json_req_payload_get("content");
  if( !contentV ){
    if( createMode || (!rid && allowCreateIfNotExists) ){
      contentV = emptyContent = cson_value_new_string("",0);
    }else{
      json_set_err(FSL_JSON_E_MISSING_ARGS,
                   "'content' parameter is missing.");
      goto error;
    }
  }
  if( !cson_value_is_string(nameV)
      || !cson_value_is_string(contentV)){
    json_set_err(FSL_JSON_E_INVALID_ARGS,
                 "'content' parameter must be a string.");
    goto error;
  }
  jstr = cson_value_get_string(contentV);
  contentLen = (int)cson_string_length_bytes(jstr);
  if(contentLen){
    blob_append(&content, cson_string_cstr(jstr),contentLen);
  }

  zMimeType = json_find_option_cstr("mimetype","mimetype","M");
  zMimeType = wiki_filter_mimetypes(zMimeType);

  wiki_cmd_commit(zPageName, rid, &content, zMimeType, 0);
  blob_reset(&content);
  /*
    Our return value here has a race condition: if this operation
    is called concurrently for the same wiki page via two requests,
    payV could reflect the results of the other save operation.
  */
  payV = json_get_wiki_page_by_name(
           cson_string_cstr(
             cson_value_get_string(nameV)),
             0);
  goto ok;
  error:
  assert( 0 != g.json.resultCode );
  assert( NULL == payV );
  ok:
  if( emptyContent ){
    /* We have some potentially tricky memory ownership
       here, which is why we handle emptyContent separately.

       This is, in fact, overkill because cson_value_new_string("",0)
       actually returns a shared singleton instance (i.e. doesn't
       allocate), but that is a cson implementation detail which i
       don't want leaking into this code...
    */
    cson_value_free(emptyContent);
  }
  return payV;

}

/*
** Implementation of /json/wiki/create.
*/
static cson_value * json_wiki_create(void){
  return json_wiki_create_or_save(1,0);
}

/*
** Implementation of /json/wiki/save.
*/
static cson_value * json_wiki_save(void){
  char const createIfNotExists = json_getenv_bool("createIfNotExists",0);
  return json_wiki_create_or_save(0,createIfNotExists);
}

/*
** Implementation of /json/wiki/list.
*/
static cson_value * json_wiki_list(void){
  cson_value * listV = NULL;
  cson_array * list = NULL;
  char const * zGlob = NULL;
  Stmt q = empty_Stmt;
  Blob sql = empty_blob;
  char const verbose = json_find_option_bool("verbose",NULL,"v",0);
  char fInvert = json_find_option_bool("invert",NULL,"i",0);;

  if( !g.perm.RdWiki && !g.perm.Read ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'j' or 'o' permissions.");
    return NULL;
  }
  blob_append(&sql,"SELECT"
              " DISTINCT substr(tagname,6) as name"
              " FROM tag JOIN tagxref USING('tagid')"
              " WHERE tagname GLOB 'wiki-*'"
              " AND TYPEOF(tagxref.value+0)='integer'",
              /* ^^^ elide wiki- tags which are not wiki pages */
              -1);
  zGlob = json_find_option_cstr("glob",NULL,"g");
  if(zGlob && *zGlob){
    blob_append_sql(&sql," AND name %s GLOB %Q",
                    fInvert ? "NOT" : "", zGlob);
  }else{
    zGlob = json_find_option_cstr("like",NULL,"l");
    if(zGlob && *zGlob){
      blob_append_sql(&sql," AND name %s LIKE %Q",
                      fInvert ? "NOT" : "", zGlob);
    }
  }
  blob_append(&sql," ORDER BY lower(name)", -1);
  db_prepare(&q,"%s", blob_sql_text(&sql));
  blob_reset(&sql);
  listV = cson_value_new_array();
  list = cson_value_get_array(listV);
  while( SQLITE_ROW == db_step(&q) ){
    cson_value * v;
    if( verbose ){
      char const * name = db_column_text(&q,0);
      v = json_get_wiki_page_by_name(name,0);
    }else{
      v = cson_sqlite3_column_to_value(q.pStmt,0);
    }
    if(!v){
      json_set_err(FSL_JSON_E_UNKNOWN,
                   "Could not convert wiki name column to JSON.");
      goto error;
    }else if( 0 != cson_array_append( list, v ) ){
      cson_value_free(v);
      json_set_err(FSL_JSON_E_ALLOC,"Could not append wiki page name to array.")
        /* OOM (or maybe numeric overflow) are the only realistic
           error codes for that particular failure.*/;
      goto error;
    }
  }
  goto end;
  error:
  assert(0 != g.json.resultCode);
  cson_value_free(listV);
  listV = NULL;
  end:
  db_finalize(&q);
  return listV;
}

static cson_value * json_wiki_diff(void){
  char const * zV1 = NULL;
  char const * zV2 = NULL;
  cson_object * pay = NULL;
  int argPos = g.json.dispatchDepth;
  int r1 = 0, r2 = 0;
  Manifest * pW1 = NULL, *pW2 = NULL;
  Blob w1 = empty_blob, w2 = empty_blob, d = empty_blob;
  char const * zErrTag = NULL;
  DiffConfig DCfg;
  char * zUuid = NULL;
  if( !g.perm.Hyperlink ){
    json_set_err(FSL_JSON_E_DENIED,
                 "Requires 'h' permissions.");
    return NULL;
  }


  zV1 = json_find_option_cstr2( "v1",NULL, NULL, ++argPos );
  zV2 = json_find_option_cstr2( "v2",NULL, NULL, ++argPos );
  if(!zV1 || !*zV1 || !zV2 || !*zV2) {
    json_set_err(FSL_JSON_E_INVALID_ARGS,
                 "Requires both 'v1' and 'v2' arguments.");
    return NULL;
  }

  r1 = symbolic_name_to_rid( zV1, "w" );
  zErrTag = zV1;
  if(r1<0){
    goto ambiguous;
  }else if(0==r1){
    goto invalid;
  }

  r2 = symbolic_name_to_rid( zV2, "w" );
  zErrTag = zV2;
  if(r2<0){
    goto ambiguous;
  }else if(0==r2){
    goto invalid;
  }

  zErrTag = zV1;
  pW1 = manifest_get(r1, CFTYPE_WIKI, 0);
  if( pW1==0 ) {
    goto manifest;
  }
  zErrTag = zV2;
  pW2 = manifest_get(r2, CFTYPE_WIKI, 0);
  if( pW2==0 ) {
    goto manifest;
  }

  blob_init(&w1, pW1->zWiki, -1);
  blob_zero(&w2);
  blob_init(&w2, pW2->zWiki, -1);
  blob_zero(&d);
  diff_config_init(&DCfg, DIFF_IGNORE_EOLWS | DIFF_STRIP_EOLCR);
  text_diff(&w1, &w2, &d, &DCfg);
  blob_reset(&w1);
  blob_reset(&w2);

  pay = cson_new_object();

  zUuid = json_wiki_get_uuid_for_rid( pW1->rid );
  cson_object_set(pay, "v1", json_new_string(zUuid) );
  free(zUuid);
  zUuid = json_wiki_get_uuid_for_rid( pW2->rid );
  cson_object_set(pay, "v2", json_new_string(zUuid) );
  free(zUuid);
  zUuid = NULL;

  manifest_destroy(pW1);
  manifest_destroy(pW2);

  cson_object_set(pay, "diff",
                  cson_value_new_string( blob_str(&d),
                                         (unsigned int)blob_size(&d)));

  return cson_object_value(pay);

  manifest:
  json_set_err(FSL_JSON_E_UNKNOWN,
               "Could not load wiki manifest for UUID [%s].",
               zErrTag);
  goto end;

  ambiguous:
  json_set_err(FSL_JSON_E_AMBIGUOUS_UUID,
               "UUID [%s] is ambiguous.", zErrTag);
  goto end;

  invalid:
  json_set_err(FSL_JSON_E_RESOURCE_NOT_FOUND,
               "UUID [%s] not found.", zErrTag);
  goto end;

  end:
  cson_free_object(pay);
  return NULL;
}

#endif /* FOSSIL_ENABLE_JSON */
Added src/leaf.c.


























































































































































































































































































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/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage the "leaf" table of the
** repository.
**
** The LEAF table contains the rids for all leaves in the check-in DAG.
** A leaf is a check-in that has no children in the same branch.
*/
#include "config.h"
#include "leaf.h"
#include <assert.h>


/*
** Return true if the check-in with RID=rid is a leaf.
**
** A leaf has no children in the same branch.
*/
int is_a_leaf(int rid){
  int rc;
  static const char zSql[] =
    @ SELECT 1 FROM plink
    @  WHERE pid=%d
    @    AND coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  rc = db_int(0, zSql /*works-like:"%d,%d,%d"*/,
              rid, TAG_BRANCH, TAG_BRANCH);
  return rc==0;
}

/*
** Count the number of primary non-branch children for the given check-in.
**
** A primary child is one where the parent is the primary parent, not
** a merge parent.  A "leaf" is a node that has zero children of any
** kind.  This routine counts only primary children.
**
** A non-branch child is one which is on the same branch as the parent.
*/
int count_nonbranch_children(int pid){
  int nNonBranch = 0;
  static Stmt q;
  static const char zSql[] =
    @ SELECT count(*) FROM plink
    @  WHERE pid=:pid AND isprim
    @    AND coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  db_static_prepare(&q, zSql /*works-like: "%d,%d"*/, TAG_BRANCH, TAG_BRANCH);
  db_bind_int(&q, ":pid", pid);
  if( db_step(&q)==SQLITE_ROW ){
    nNonBranch = db_column_int(&q, 0);
  }
  db_reset(&q);
  return nNonBranch;
}


/*
** Recompute the entire LEAF table.
**
** This can be expensive (5 seconds or so) for a really large repository.
** So it is only done for things like a rebuild.
*/
void leaf_rebuild(void){
  db_multi_exec(
    "DELETE FROM leaf;"
    "INSERT OR IGNORE INTO leaf"
    "  SELECT cid FROM plink"
    "  EXCEPT"
    "  SELECT pid FROM plink"
    "   WHERE coalesce((SELECT value FROM tagxref"
                       " WHERE tagid=%d AND rid=plink.pid),'trunk')"
         " == coalesce((SELECT value FROM tagxref"
                       " WHERE tagid=%d AND rid=plink.cid),'trunk')",
    TAG_BRANCH, TAG_BRANCH
  );
}

/*
** A bag of check-ins whose leaf status needs to be checked.
*/
static Bag needToCheck;

/*
** Check to see if check-in "rid" is a leaf and either add it to the LEAF
** table if it is, or remove it if it is not.
*/
void leaf_check(int rid){
  static Stmt checkIfLeaf;
  static Stmt addLeaf;
  static Stmt removeLeaf;
  int rc;

  db_static_prepare(&checkIfLeaf,
    "SELECT 1 FROM plink"
    " WHERE pid=:rid"
    "   AND coalesce((SELECT value FROM tagxref"
                    " WHERE tagid=%d AND rid=:rid),'trunk')"
       " == coalesce((SELECT value FROM tagxref"
                    " WHERE tagid=%d AND rid=plink.cid),'trunk');",
    TAG_BRANCH, TAG_BRANCH
  );
  db_bind_int(&checkIfLeaf, ":rid", rid);
  rc = db_step(&checkIfLeaf);
  db_reset(&checkIfLeaf);
  if( rc==SQLITE_ROW ){
    db_static_prepare(&removeLeaf, "DELETE FROM leaf WHERE rid=:rid");
    db_bind_int(&removeLeaf, ":rid", rid);
    db_step(&removeLeaf);
    db_reset(&removeLeaf);
  }else{
    db_static_prepare(&addLeaf, "INSERT OR IGNORE INTO leaf VALUES(:rid)");
    db_bind_int(&addLeaf, ":rid", rid);
    db_step(&addLeaf);
    db_reset(&addLeaf);
  }
}

/*
** Return an SQL expression (stored in memory obtained from fossil_malloc())
** that is true if the SQL variable named "zVar" contains the rid with
** a CLOSED tag.  In other words, return true if the leaf is closed.
**
** The result can be prefaced with a NOT operator to get all leaves that
** are open.
*/
char *leaf_is_closed_sql(const char *zVar){
  return mprintf(
    "EXISTS(SELECT 1 FROM tagxref AS tx"
           " WHERE tx.rid=%s"
             " AND tx.tagid=%d"
             " AND tx.tagtype>0)",
    zVar, TAG_CLOSED
  );
}

/*
** Returns true if vid refers to a closed leaf, else false. vid is
** assumed to refer to a manifest, but this function does not verify
** that.
*/
int leaf_is_closed(int vid){
  return db_exists("SELECT 1 FROM tagxref"
                   " WHERE tagid=%d AND rid=%d AND tagtype>0",
                   TAG_CLOSED, vid);
}

/*
** Schedule a leaf check for "rid" and its parents.
*/
void leaf_eventually_check(int rid){
  static Stmt parentsOf;

  db_static_prepare(&parentsOf,
     "SELECT pid FROM plink WHERE cid=:rid AND pid>0"
  );
  db_bind_int(&parentsOf, ":rid", rid);
  bag_insert(&needToCheck, rid);
  while( db_step(&parentsOf)==SQLITE_ROW ){
    bag_insert(&needToCheck, db_column_int(&parentsOf, 0));
  }
  db_reset(&parentsOf);
}

/*
** Do all pending leaf checks.
*/
void leaf_do_pending_checks(void){
  int rid;
  for(rid=bag_first(&needToCheck); rid; rid=bag_next(&needToCheck,rid)){
    leaf_check(rid);
  }
  bag_clear(&needToCheck);
}

/*
** If check-in rid is an open-leaf and there exists another
** open leaf on the same branch, then return 1.
**
** If check-in rid is not an open leaf, or if it is the only open leaf
** on its branch, then return 0.
*/
int leaf_ambiguity(int rid){
  int rc;             /* Result */
  char zVal[30];
  if( !is_a_leaf(rid) ) return 0;
  sqlite3_snprintf(sizeof(zVal), zVal, "%d", rid);
  rc = db_exists(
       "SELECT 1 FROM leaf"
       " WHERE NOT %z"
       "   AND rid<>%d"
       "   AND (SELECT value FROM tagxref WHERE tagid=%d AND rid=leaf.rid)="
       "       (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d)"
       "   AND NOT %z",
       leaf_is_closed_sql(zVal), rid, TAG_BRANCH, TAG_BRANCH, rid,
       leaf_is_closed_sql("leaf.rid"));
  return rc;
}

/*
** If check-in rid is an open-leaf and there exists another open leaf
** on the same branch, then print a detailed warning showing all open
** leaves on that branch.
*/
int leaf_ambiguity_warning(int rid, int currentCkout){
  char *zBr;
  Stmt q;
  int n = 0;
  Blob msg;
  if( leaf_ambiguity(rid)==0 ) return 0;
  zBr = db_text(0, "SELECT value FROM tagxref WHERE tagid=%d AND rid=%d",
                TAG_BRANCH, rid);
  if( zBr==0 ) zBr = fossil_strdup("trunk");
  blob_init(&msg, 0, 0);
  blob_appendf(&msg, "WARNING: multiple open leaf check-ins on %s:", zBr);
  db_prepare(&q,
    "SELECT"
    "  (SELECT uuid FROM blob WHERE rid=leaf.rid),"
    "  (SELECT datetime(mtime,toLocal()) FROM event WHERE objid=leaf.rid),"
    "  leaf.rid"
    "  FROM leaf"
    " WHERE (SELECT value FROM tagxref WHERE tagid=%d AND rid=leaf.rid)=%Q"
    "   AND NOT %z"
    " ORDER BY 2 DESC",
    TAG_BRANCH, zBr, leaf_is_closed_sql("leaf.rid")
  );
  while( db_step(&q)==SQLITE_ROW ){
    blob_appendf(&msg, "\n  (%d) %s [%S]%s",
          ++n, db_column_text(&q,1), db_column_text(&q,0),
          db_column_int(&q,2)==currentCkout ? " (current)" : "");
  }
  db_finalize(&q);
  fossil_warning("%s",blob_str(&msg));
  blob_reset(&msg);
  return 1;
}

/*
** COMMAND: test-leaf-ambiguity
**
** Usage: %fossil NAME ...
**
** Resolve each name on the command line and call leaf_ambiguity_warning()
** for each resulting RID.
*/
void leaf_ambiguity_warning_test(void){
  int i;
  int rid;
  int rc;
  db_find_and_open_repository(0,0);
  verify_all_options();
  for(i=2; i<g.argc; i++){
    char *zUuid;
    rid = name_to_typed_rid(g.argv[i], "ci");
    zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    fossil_print("%s (rid=%d) %S ", g.argv[i], rid, zUuid ? zUuid : "(none)");
    fossil_free(zUuid);
    rc = leaf_ambiguity_warning(rid, rid);
    if( rc==0 ) fossil_print(" ok\n");
  }
}
Added src/loadctrl.c.












































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to check the host load-average and abort
** CPU-intensive operations if the load-average is too high.
*/
#include "config.h"
#include "loadctrl.h"
#include <assert.h>

/*
** Return the load average for the host processor
*/
double load_average(void){
#if !defined(_WIN32) && !defined(FOSSIL_OMIT_LOAD_AVERAGE)
  double a[3];
  if( getloadavg(a, 3)>0 ){
    return a[0]>=0.000001 ? a[0] : 0.000001;
  }
#endif
  return 0.0;
}

/*
** COMMAND: test-loadavg
**
** %fossil test-loadavg
**
** Print the load average on the host machine.
*/
void loadavg_test_cmd(void){
  fossil_print("load-average: %f\n", load_average());
}

/*
** Abort the current page request if the load average of the host
** computer is too high. Admin and Setup users are exempt from this
** restriction.
*/
void load_control(void){
  double mxLoad = atof(db_get("max-loadavg", "0.0"));
#if 1
  /* Disable this block only to test load restrictions */
  if( mxLoad<=0.0 || mxLoad>=load_average() ) return;

  login_check_credentials();
  if(g.perm.Admin || g.perm.Setup){
    return;
  }
#endif

  style_set_current_feature("test");
  style_header("Server Overload");
  @ <h2>The server load is currently too high.
  @ Please try again later.</h2>
  @ <p>Current load average: %f(load_average()).<br>
  @ Load average limit: %f(mxLoad)</p>
  style_finish_page();
  cgi_set_status(503,"Server Overload");
  cgi_reply();
  exit(0);
}
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**
*******************************************************************************
**
** This file contains code for generating the login and logout screens.
**
** Notes:
**
** There are two special-case user-ids: "anonymous" and "nobody".
** There are four special-case user-ids:  "anonymous", "nobody",
** "developer" and "reader".
**
** The capabilities of the nobody user are available to anyone,
** regardless of whether or not they are logged in.  The capabilities
** of anonymous are only available after logging in, but the login
** screen displays the password for the anonymous login, so this
** should not prevent a human user from doing so.
** should not prevent a human user from doing so.  The capabilities
** of developer and reader are inherited by any user that has the
** "v" and "u" capabilities, respectively.
**
** The nobody user has capabilities that you want spiders to have.
** The anonymous user has capabilities that you want people without
** logins to have.
**
** Of course, a sophisticated spider could easily circumvent the
** anonymous login requirement and walk the website.  But that is
** not really the point.  The anonymous login keeps search-engine
** crawlers and site download tools like wget from walking change
** logs and downloading diffs of very version of the archive that
** has ever existed, and things like that.
*/
#include "config.h"
#include "login.h"
#ifdef __MINGW32__
#if defined(_WIN32)
#  include <windows.h>           /* for Sleep */
#  if defined(__MINGW32__) || defined(_MSC_VER)
#  define sleep Sleep            /* windows does not have sleep, but Sleep */
#    define sleep Sleep            /* windows does not have sleep, but Sleep */
#  endif
#endif
#include <time.h>

/*
** Compute an appropriate Anti-CSRF token into g.zCsrfToken[].
*/
static void login_create_csrf_secret(const char *zSeed){
  unsigned char zResult[20];
  unsigned int i;

  sha1sum_binary(zSeed, zResult);
  for(i=0; i<sizeof(g.zCsrfToken)-1; i++){
    g.zCsrfToken[i] = "abcdefghijklmnopqrstuvwxyz"
                      "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                      "0123456789-/"[zResult[i]%64];
  }
  g.zCsrfToken[i] = 0;
}

/*
** Return the login-group name.  Or return 0 if this repository is
** not a member of a login-group.
*/
const char *login_group_name(void){
  static const char *zGroup = 0;
  static int once = 1;
  if( once ){
    zGroup = db_get("login-group-name", 0);
    once = 0;
  }
  return zGroup;
}

/*
** Return a path appropriate for setting a cookie.
**
** The path is g.zTop for single-repo cookies.  It is "/" for
** cookies of a login-group.
*/
const char *login_cookie_path(void){
  if( login_group_name()==0 ){
    return g.zTop;
  }else{
    return "/";
  }
}

/*
** Return the name of the login cookie
** Return the name of the login cookie.
**
** The login cookie name is always of the form:  fossil-XXXXXXXXXXXXXXXX
** where the Xs are the first 16 characters of the login-group-code or
** of the project-code if we are not a member of any login-group.
*/
static char *login_cookie_name(void){
char *login_cookie_name(void){
  static char *zCookieName = 0;
  if( zCookieName==0 ){
    int n = strlen(g.zTop);
    zCookieName = malloc( n*2+16 );
    zCookieName = db_text(0,
                      /* 0123456789 12345 */
    strcpy(zCookieName, "fossil_login_");
       "SELECT 'fossil-' || substr(value,1,16)"
    encode16((unsigned char*)g.zTop, (unsigned char*)&zCookieName[13], n);
       "  FROM config"
       " WHERE name IN ('project-code','login-group-code')"
       " ORDER BY name /*sort*/"
    );
  }
  return zCookieName;
}

/*
** Redirect to the page specified by the "g" query parameter.
** Or if there is no "g" query parameter, redirect to the homepage.
*/
static void redirect_to_g(void){
NORETURN void login_redirect_to_g(void){
  const char *zGoto = P("g");
  if( zGoto ){
    cgi_redirectf("%R/%s",zGoto);
  }else if( (zGoto = P("fossil-goto"))!=0 && zGoto[0]!=0 ){
    cgi_set_cookie("fossil-goto","",0,1);
    cgi_redirect(zGoto);
  }else{
    fossil_redirect_home();
  }
}

/*
** Return an abbreviated project code.  The abbreviation is the first
** The IP address of the client is stored as part of the anonymous
** 16 characters of the project code.
** login cookie for additional security.  But some clients are behind
** firewalls that shift the IP address with each HTTP request.  To
** allow such (broken) clients to log in, extract just a prefix of the
** IP address.  
**
** Memory is obtained from malloc.
*/
static char *ipPrefix(const char *zIP){
static char *abbreviated_project_code(const char *zFullCode){
  int i, j; 
  for(i=j=0; zIP[i]; i++){
    if( zIP[i]=='.' ){
      j++;
      if( j==2 ) break;
    }
  }
  return mprintf("%.*s", i, zIP);
  return mprintf("%.16s", zFullCode);
}
        


/*
** Check to see if the anonymous login is valid.  If it is valid, return
** the userid of the anonymous user.
**
** The zCS parameter is the "captcha seed" used for a specific
** anonymous login request.
*/
static int isValidAnonymousLogin(
int login_is_valid_anonymous(
  const char *zUsername,  /* The username.  Must be "anonymous" */
  const char *zPassword   /* The supplied password */
  const char *zPassword,  /* The supplied password */
  const char *zCS         /* The captcha seed value */
){
  const char *zCS;        /* The captcha seed value */
  const char *zPw;        /* The correct password shown in the captcha */
  int uid;                /* The user ID of anonymous */
  int n = 0;              /* Counter of captcha-secrets */

  if( zUsername==0 ) return 0;
  if( zPassword==0 ) return 0;
  else if( zPassword==0 ) return 0;
  if( strcmp(zUsername,"anonymous")!=0 ) return 0;
  zCS = P("cs");   /* The "cs" parameter is the "captcha seed" */
  if( zCS==0 ) return 0;
  zPw = captcha_decode((unsigned int)atoi(zCS));
  if( strcasecmp(zPw, zPassword)!=0 ) return 0;
  else if( zCS==0 ) return 0;
  else if( fossil_strcmp(zUsername,"anonymous")!=0 ) return 0;
  while( 1/*exit-by-break*/ ){
    zPw = captcha_decode((unsigned int)atoi(zCS), n);
    if( zPw==0 ) return 0;
    if( fossil_stricmp(zPw, zPassword)==0 ) break;
    n++;
  }
  uid = db_int(0, "SELECT uid FROM user WHERE login='anonymous'"
                  " AND length(pw)>0 AND length(cap)>0");
                  " AND octet_length(pw)>0 AND octet_length(cap)>0");
  return uid;
}

/*
** Make sure the accesslog table exists.  Create it if it does not
*/
void create_accesslog_table(void){
  if( !db_table_exists("repository","accesslog") ){
    db_unprotect(PROTECT_READONLY);
    db_multi_exec(
      "CREATE TABLE IF NOT EXISTS repository.accesslog("
      "  uname TEXT,"
      "  ipaddr TEXT,"
      "  success BOOLEAN,"
      "  mtime TIMESTAMP"
      ");"
    );
    db_protect_pop();
  }
}

/*
** Make a record of a login attempt, if login record keeping is enabled.
*/
static void record_login_attempt(
  const char *zUsername,     /* Name of user logging in */
  const char *zIpAddr,       /* IP address from which they logged in */
  int bSuccess               /* True if the attempt was a success */
){
  db_unprotect(PROTECT_READONLY);
  if( db_get_boolean("access-log", 0) ){
    create_accesslog_table();
    db_multi_exec(
      "INSERT INTO accesslog(uname,ipaddr,success,mtime)"
      "VALUES(%Q,%Q,%d,julianday('now'));",
      zUsername, zIpAddr, bSuccess
    );
  }
  if( bSuccess ){
    alert_user_contact(zUsername);
  }
  db_protect_pop();
}

/*
** Searches for the user ID matching the given name and password.
** On success it returns a positive value. On error it returns 0.
** On serious (DB-level) error it will probably exit.
**
** zUsername uses double indirection because we may re-point *zUsername
** at a C string allocated with fossil_strdup() if you pass an email
** address instead and we find that address in the user table's info
** field, which is expected to contain a string of the form "Human Name
** <human@example.com>".  In that case, *zUsername will point to that
** user's actual login name on return, causing a leak unless the caller
** is diligent enough to check whether its pointer was re-pointed.
**
** zPassword may be either the plain-text form or the encrypted
** form of the user's password.
*/
int login_search_uid(const char **pzUsername, const char *zPasswd){
  char *zSha1Pw = sha1_shared_secret(zPasswd, *pzUsername, 0);
  int uid = db_int(0,
    "SELECT uid FROM user"
    " WHERE login=%Q"
    "   AND octet_length(cap)>0 AND octet_length(pw)>0"
    "   AND login NOT IN ('anonymous','nobody','developer','reader')"
    "   AND (pw=%Q OR (length(pw)<>40 AND pw=%Q))"
    "   AND (info NOT LIKE '%%expires 20%%'"
    "      OR substr(info,instr(lower(info),'expires')+8,10)>datetime('now'))",
    *pzUsername, zSha1Pw, zPasswd
  );

  /* If we did not find a login on the first attempt, and the username
  ** looks like an email address, then perhaps the user entered their
  ** email address instead of their login.  Try again to match the user
  ** against email addresses contained in the "info" field.
  */
  if( uid==0 && strchr(*pzUsername,'@')!=0 ){
    Stmt q;
    db_prepare(&q,
      "SELECT login FROM user"
      " WHERE find_emailaddr(info)=%Q"
      "   AND instr(login,'@')==0",
      *pzUsername
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zLogin = db_column_text(&q,0);
      if( (uid = login_search_uid(&zLogin, zPasswd) ) != 0 ){
        *pzUsername = fossil_strdup(zLogin);
        break;
      }
    }
    db_finalize(&q);
  }
  free(zSha1Pw);
  return uid;
}

/*
** Generates a login cookie value for a non-anonymous user.
**
** The zHash parameter must be a random value which must be
** subsequently stored in user.cookie for later validation.
**
** The returned memory should be free()d after use.
*/
char *login_gen_user_cookie_value(const char *zUsername, const char *zHash){
  char *zProjCode = db_get("project-code",NULL);
  char *zCode = abbreviated_project_code(zProjCode);
  free(zProjCode);
  assert((zUsername && *zUsername) && "Invalid user data.");
  return mprintf("%s/%z/%s", zHash, zCode, zUsername);
}
** WEBPAGE: login
** WEBPAGE: logout
** WEBPAGE: my

/*
** Generates a login cookie for NON-ANONYMOUS users.  Note that this
** function "could" figure out the uid by itself but it currently
** doesn't because the code which calls this already has the uid.
**
** This function also updates the user.cookie, user.ipaddr,
** and user.cexpire fields for the given user.
**
** If zDest is not NULL then the generated cookie is copied to
** *zDdest and ownership is transfered to the caller (who should
** eventually pass it to free()).
**
** If bSessionCookie is true, the cookie will be a session cookie,
** else a persistent cookie. If it's a session cookie, the
** [user].[cexpire] and [user].[cookie] entries will be modified as if
** it were a persistent cookie because doing so is necessary for
** fossil's own "is this cookie still valid?" checks to work.
*/
void login_set_user_cookie(
  const char *zUsername,  /* User's name */
  int uid,                /* User's ID */
  char **zDest,           /* Optional: store generated cookie value. */
  int bSessionCookie      /* True for session-only cookie */
){
  const char *zCookieName = login_cookie_name();
  const char *zExpire = db_get("cookie-expire","8766");
  const int expires = atoi(zExpire)*3600;
  char *zHash = 0;
  char *zCookie;
  const char *zIpAddr = PD("REMOTE_ADDR","nil"); /* IP address of user */

  assert((zUsername && *zUsername) && (uid > 0) && "Invalid user data.");
  zHash = db_text(0,
      "SELECT cookie FROM user"
      " WHERE uid=%d"
      "   AND cexpire>julianday('now')"
      "   AND length(cookie)>30",
      uid);
  if( zHash==0 ) zHash = db_text(0, "SELECT hex(randomblob(25))");
  zCookie = login_gen_user_cookie_value(zUsername, zHash);
  cgi_set_cookie(zCookieName, zCookie, login_cookie_path(),
                 bSessionCookie ? 0 : expires);
  record_login_attempt(zUsername, zIpAddr, 1);
  db_unprotect(PROTECT_USER);
  db_multi_exec("UPDATE user SET cookie=%Q,"
                "  cexpire=julianday('now')+%d/86400.0 WHERE uid=%d",
                zHash, expires, uid);
  db_protect_pop();
  fossil_free(zHash);
  if( zDest ){
    *zDest = zCookie;
  }else{
    free(zCookie);
  }
}

/* Sets a cookie for an anonymous user login, which looks like this:
**
**    HASH/TIME/anonymous
**
** Where HASH is the sha1sum of TIME/SECRET, in which SECRET is captcha-secret.
**
** If zCookieDest is not NULL then the generated cookie is assigned to
** *zCookieDest and the caller must eventually free() it.
**
** If bSessionCookie is true, the cookie will be a session cookie.
*/
void login_set_anon_cookie(char **zCookieDest, int bSessionCookie){
  char *zNow;                  /* Current time (julian day number) */
  char *zCookie;               /* The login cookie */
  const char *zCookieName;     /* Name of the login cookie */
  Blob b;                      /* Blob used during cookie construction */
  int expires = bSessionCookie ? 0 : 6*3600;
  zCookieName = login_cookie_name();
  zNow = db_text("0", "SELECT julianday('now')");
  assert( zCookieName && zNow );
  blob_init(&b, zNow, -1);
  blob_appendf(&b, "/%z", captcha_secret(0));
  sha1sum_blob(&b, &b);
  zCookie = mprintf("%s/%s/anonymous", blob_buffer(&b), zNow);
  blob_reset(&b);
  cgi_set_cookie(zCookieName, zCookie, login_cookie_path(), expires);
  if( zCookieDest ){
    *zCookieDest = zCookie;
  }else{
    free(zCookie);
  }
  fossil_free(zNow);
}

/*
** "Unsets" the login cookie (insofar as cookies can be unset) and
** clears the current user's (g.userUid) login information from the
** user table. Sets: user.cookie, user.ipaddr, user.cexpire.
**
** We could/should arguably clear out g.userUid and g.perm here, but
** we don't currently do not.
**
** This is a no-op if g.userUid is 0.
*/
void login_clear_login_data(){
  if(!g.userUid){
    return;
  }else{
    const char *cookie = login_cookie_name();
    /* To logout, change the cookie value to an empty string */
    cgi_set_cookie(cookie, "",
                   login_cookie_path(), -86400);
    db_unprotect(PROTECT_USER);
    db_multi_exec("UPDATE user SET cookie=NULL, ipaddr=NULL, "
                  "  cexpire=0 WHERE uid=%d"
                  "  AND login NOT IN ('anonymous','nobody',"
                  "  'developer','reader')", g.userUid);
    db_protect_pop();
    cgi_replace_parameter(cookie, NULL);
    cgi_replace_parameter("anon", NULL);
  }
}

/*
** Look at the HTTP_USER_AGENT parameter and try to determine if the user agent
** is a manually operated browser or a bot.  When in doubt, assume a bot.
** Return true if we believe the agent is a real person.
*/
static int isHuman(const char *zAgent){
  if( zAgent==0 ) return 0;  /* If no UserAgent, then probably a bot */
  if( strstr(zAgent, "bot")!=0 ) return 0;
  if( strstr(zAgent, "spider")!=0 ) return 0;
  if( strstr(zAgent, "crawl")!=0 ) return 0;
  /* If a URI appears in the User-Agent, it is probably a bot */
  if( strstr(zAgent, "http")!=0 ) return 0;
  if( strncmp(zAgent, "Mozilla/", 8)==0 ){
    if( atoi(&zAgent[8])<4 ) return 0;  /* Many bots advertise as Mozilla/3 */

    /* Google AI Robot, maybe? */
    if( strstr(zAgent, "GoogleOther)")!=0 ) return 0;

    /* 2016-05-30:  A pernicious spider that likes to walk Fossil timelines has
    ** been detected on the SQLite website.  The spider changes its user-agent
    ** string frequently, but it always seems to include the following text:
    */
    if( strstr(zAgent, "Safari/537.36Mozilla/5.0")!=0 ) return 0;

    if( sqlite3_strglob("*Firefox/[1-9]*", zAgent)==0 ) return 1;
    if( sqlite3_strglob("*Chrome/[1-9]*", zAgent)==0 ) return 1;
    if( sqlite3_strglob("*(compatible;?MSIE?[1789]*", zAgent)==0 ) return 1;
    if( sqlite3_strglob("*Trident/[1-9]*;?rv:[1-9]*", zAgent)==0 ){
      return 1; /* IE11+ */
    }
    if( sqlite3_strglob("*AppleWebKit/[1-9]*(KHTML*", zAgent)==0 ) return 1;
    if( sqlite3_strglob("*PaleMoon/[1-9]*", zAgent)==0 ) return 1;
    return 0;
  }
  if( strncmp(zAgent, "Opera/", 6)==0 ) return 1;
  if( strncmp(zAgent, "Safari/", 7)==0 ) return 1;
  if( strncmp(zAgent, "Lynx/", 5)==0 ) return 1;
  if( strncmp(zAgent, "NetSurf/", 8)==0 ) return 1;
  return 0;
}

/*
** Make a guess at whether or not the requestor is a mobile device or
** a desktop device (narrow screen vs. wide screen) based the HTTP_USER_AGENT
** parameter.  Return true for mobile and false for desktop.
**
** Caution:  This is only a guess.
**
** Algorithm derived from https://developer.mozilla.org/en-US/docs/Web/
** HTTP/Browser_detection_using_the_user_agent#mobile_device_detection on
** 2021-03-01
*/
int user_agent_is_likely_mobile(void){
  const char *zAgent = P("HTTP_USER_AGENT");
  if( zAgent==0 ) return 0;
  if( strstr(zAgent,"Mobi")!=0 ) return 1;
  return 0;
}

/*
** COMMAND: test-ishuman
**
** Read lines of text from standard input.  Interpret each line of text
** as a User-Agent string from an HTTP header.  Label each line as HUMAN
** or ROBOT.
*/
void test_ishuman(void){
  char zLine[3000];
  while( fgets(zLine, sizeof(zLine), stdin) ){
    fossil_print("%s %s", isHuman(zLine) ? "HUMAN" : "ROBOT", zLine);
  }
}

/*
** SQL function for constant time comparison of two values.
** Sets result to 0 if two values are equal.
*/
static void constant_time_cmp_function(
 sqlite3_context *context,
 int argc,
 sqlite3_value **argv
){
  const unsigned char *buf1, *buf2;
  int len, i;
  unsigned char rc = 0;

  assert( argc==2 );
  len = sqlite3_value_bytes(argv[0]);
  if( len==0 || len!=sqlite3_value_bytes(argv[1]) ){
    rc = 1;
  }else{
    buf1 = sqlite3_value_text(argv[0]);
    buf2 = sqlite3_value_text(argv[1]);
    for( i=0; i<len; i++ ){
      rc = rc | (buf1[i] ^ buf2[i]);
    }
  }
  sqlite3_result_int(context, rc);
}

/*
** Return true if the current page was reached by a redirect from the /login
** Generate the login page.
**
** page.
*/
int referred_from_login(void){
  const char *zReferer = P("HTTP_REFERER");
  char *zPattern;
  int rc;
  if( zReferer==0 ) return 0;
  zPattern = mprintf("%s/login*", g.zBaseURL);
  rc = sqlite3_strglob(zPattern, zReferer)==0;
  fossil_free(zPattern);
  return rc;
}

/*
** Return true if users are allowed to reset their own passwords.
*/
int login_self_password_reset_available(void){
  if( !db_get_boolean("self-pw-reset",0) ) return 0;
  if( !alert_tables_exist() ) return 0;
  return 1;
}

/*
** Return TRUE if self-registration is available.  If the zNeeded
** argument is not NULL, then only return true if self-registration is
** available and any of the capabilities named in zNeeded are available
** to self-registered users.
*/
int login_self_register_available(const char *zNeeded){
  CapabilityString *pCap;
  int rc;
  if( !db_get_boolean("self-register",0) ) return 0;
  if( zNeeded==0 ) return 1;
  pCap = capability_add(0, db_get("default-perms", "u"));
  capability_expand(pCap);
  rc = capability_has_any(pCap, zNeeded);
  capability_free(pCap);
  return rc;
}

/*
** There used to be a page named "my" that was designed to show information
** about a specific user.  The "my" page was linked from the "Logged in as USER"
** line on the title bar.  The "my" page was never completed so it is now
** removed.  Use this page as a placeholder in older installations.
**
** WEBPAGE: login
** WEBPAGE: logout
** WEBPAGE: my
**
** The login/logout page.  Parameters:
**
**    g=URL             Jump back to this URL after login completes
**    anon              The g=URL is not accessible by "nobody" but is
**                      accessible by "anonymous"
*/
void login_page(void){
  const char *zUsername, *zPasswd;
  const char *zNew1, *zNew2;
  const char *zAnonPw = 0;
  const char *zGoto = P("g");
  int anonFlag;
  int anonFlag;                /* Login as "anonymous" would be useful */
  char *zErrMsg = "";
  int uid;                     /* User id loged in user */
  int uid;                     /* User id logged in user */
  char *zSha1Pw;
  const char *zIpAddr;         /* IP address of requestor */
  const int noAnon = P("noanon")!=0;
  int rememberMe;              /* If true, use persistent cookie, else
                                  session cookie. Toggled per
                                  checkbox. */

  if( P("pwreset")!=0 && login_self_password_reset_available() ){
    /* If the "Reset Password" button in the form was pressed, render
    ** the Request Password Reset page in place of this one. */
    login_reqpwreset_page();
    return;
  }
  login_check_credentials();
  fossil_redirect_to_https_if_needed(1);
  sqlite3_create_function(g.db, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);
  zUsername = P("u");
  zPasswd = P("p");
  anonFlag = P("anon")!=0;
  if( P("out")!=0 ){
    const char *zCookieName = login_cookie_name();
  anonFlag = g.zLogin==0 && PB("anon");
  /* Handle log-out requests */
  if( P("out") && cgi_csrf_safe(2) ){
    login_clear_login_data();
    cgi_set_cookie(zCookieName, "", 0, -86400);
    redirect_to_g();
    login_redirect_to_g();
    return;
  }

  /* Redirect for create-new-account requests */
  if( P("self") ){
    cgi_redirectf("%R/register");
    return;
  }

  /* Deal with password-change requests */
  if( g.perm.Password && zPasswd
  if( g.okPassword && zPasswd && (zNew1 = P("n1"))!=0 && (zNew2 = P("n2"))!=0 ){
    zSha1Pw = sha1_shared_secret(zPasswd, g.zLogin);
    if( db_int(1, "SELECT 0 FROM user"
                  " WHERE uid=%d AND (pw=%Q OR pw=%Q)", 
                  g.userUid, zPasswd, zSha1Pw) ){
   && (zNew1 = P("n1"))!=0 && (zNew2 = P("n2"))!=0
   && cgi_csrf_safe(2)
  ){
    /* If there is not a "real" login, we cannot change any password. */
    if( g.zLogin ){
      /* The user requests a password change */
      zSha1Pw = sha1_shared_secret(zPasswd, g.zLogin, 0);
      if( db_int(1, "SELECT 0 FROM user"
                    " WHERE uid=%d"
                    " AND (constant_time_cmp(pw,%Q)=0"
                    "      OR constant_time_cmp(pw,%Q)=0)",
                    g.userUid, zSha1Pw, zPasswd) ){
        sleep(1);
        zErrMsg =
           @ <p><span class="loginError">
           @ You entered an incorrect old password while attempting to change
           @ your password.  Your password is unchanged.
           @ </span></p>
        ;
      }else if( fossil_strcmp(zNew1,zNew2)!=0 ){
        zErrMsg =
           @ <p><span class="loginError">
           @ The two copies of your new passwords do not match.
           @ Your password is unchanged.
           @ </span></p>
        ;
      }else{
        char *zNewPw = sha1_shared_secret(zNew1, g.zLogin, 0);
        char *zChngPw;
        char *zErr;
        int rc;

        /* vvvvvvv---  tag-20230106-1 ----vvvvvv
        **
        ** Replicate changes made below to tag-20230106-2
        */
        admin_log("password change for user %s", g.zLogin);
        db_unprotect(PROTECT_USER);
        db_multi_exec(
           "UPDATE user SET pw=%Q WHERE uid=%d", zNewPw, g.userUid
        );
        zChngPw = mprintf(
           "UPDATE user"
           "   SET pw=shared_secret(%Q,%Q,"
           "        (SELECT value FROM config WHERE name='project-code'))"
           " WHERE login=%Q",
           zNew1, g.zLogin, g.zLogin
        );
        fossil_free(zNewPw);
        rc = login_group_sql(zChngPw, "<p>", "</p>\n", &zErr);
        db_protect_pop();
        /*
        ** ^^^^^^^^---  tag-20230106-1 ----^^^^^^^^^
        **
        ** Replicate changes above to tag-20230106-2
        */

        if( rc ){
          zErrMsg = mprintf("<span class=\"loginError\">%s</span>", zErr);
          fossil_free(zErr);
        }else{
          login_redirect_to_g();
          return;
        }
      }
    }else{
      zErrMsg =
         @ <p><span class="loginError">
         @ The password cannot be changed for this type of login.
         @ The password is unchanged.
         @ </span></p>
      ;
    }
  }
  zIpAddr = PD("REMOTE_ADDR","nil");   /* Complete IP address for logging */
  uid = login_is_valid_anonymous(zUsername, zPasswd, P("cs"));
  if(zUsername==0){
    /* Initial login page hit. */
    rememberMe = 0;
  }else{
    rememberMe = P("remember")!=0;
  }
  if( uid>0 ){
    login_set_anon_cookie(NULL, rememberMe?0:1);
    record_login_attempt("anonymous", zIpAddr, 1);
    login_redirect_to_g();
  }
  if( zUsername!=0 && zPasswd!=0 && zPasswd[0]!=0 ){
    /* Attempting to log in as a user other than anonymous.
    */
    uid = login_search_uid(&zUsername, zPasswd);
    if( uid<=0 ){
      sleep(1);
      zErrMsg = 
         @ <p><font color="red">
         @ You entered an incorrect old password while attempting to change
         @ your password.  Your password is unchanged.
         @ </font></p>
      ;
    }else if( strcmp(zNew1,zNew2)!=0 ){
      zErrMsg = 
         @ <p><font color="red">
         @ The two copies of your new passwords do not match.
         @ Your password is unchanged.
         @ </font></p>
      ;
      zErrMsg =
         @ <p><span class="loginError">
         @ You entered an unknown user or an incorrect password.
         @ </span></p>
      ;
      record_login_attempt(zUsername, zIpAddr, 0);
      cgi_set_status(401, "Unauthorized");
    }else{
      /* Non-anonymous login is successful.  Set a cookie of the form:
      **
      **    HASH/PROJECT/LOGIN
      **
      ** where HASH is a random hex number, PROJECT is either project
      ** code prefix, and LOGIN is the user name.
      */
      login_set_user_cookie(zUsername, uid, NULL, rememberMe?0:1);
      login_redirect_to_g();
    }
  }
  style_set_current_feature("login");
  style_header("Login/Logout");
  style_adunit_config(ADUNIT_OFF);
  @ %s(zErrMsg)
  if( zGoto && !noAnon ){
    char *zAbbrev = fossil_strdup(zGoto);
    int i;
    for(i=0; zAbbrev[i] && zAbbrev[i]!='?'; i++){}
    zAbbrev[i] = 0;
    if( g.zLogin ){
      @ <p>Use a different login with greater privilege than <b>%h(g.zLogin)</b>
      @ to access <b>%h(zAbbrev)</b>.
    }else if( anonFlag ){
      @ <p>Login as <b>anonymous</b> or any named user
      @ to access page <b>%h(zAbbrev)</b>.
    }else{
      @ <p>Login as a named user to access page <b>%h(zAbbrev)</b>.
    }
    fossil_free(zAbbrev);
  }
  if( g.sslNotAvailable==0
   && strncmp(g.zBaseURL,"https:",6)!=0
   && db_get_boolean("https-login",0)
  ){
    form_begin(0, "https:%s/login", g.zBaseURL+5);
  }else{
    form_begin(0, "%R/login");
  }
  if( zGoto ){
    @ <input type="hidden" name="g" value="%h(zGoto)">
  }
  if( anonFlag ){
    @ <input type="hidden" name="anon" value="1">
  }
  if( g.zLogin ){
    @ <p>Currently logged in as <b>%h(g.zLogin)</b>.
    @ <input type="submit" name="out" value="Logout" autofocus></p>
    @ </form>
  }else{
    unsigned int uSeed = captcha_seed();
    if( g.zLogin==0 && (anonFlag || zGoto==0) ){
      zAnonPw = db_text(0, "SELECT pw FROM user"
                           " WHERE login='anonymous'"
                           "   AND cap!=''");
    }else{
      zAnonPw = 0;
    }
    @ <table class="login_out">
    if( P("HTTPS")==0 ){
      @ <tr><td class="form_label">Warning:</td>
      @ <td><span class='securityWarning'>
      @ Login information, including the password,
      @ will be sent in the clear over an unencrypted connection.
      if( !g.sslNotAvailable ){
        @ Consider logging in at
        @ <a href='%s(g.zHttpsURL)'>%h(g.zHttpsURL)</a> instead.
      }
      @ </span></td></tr>
    }
    @ <tr>
    @   <td class="form_label" id="userlabel1">User ID:</td>
    @   <td><input type="text" id="u" aria-labelledby="userlabel1" name="u" \
    @ size="30" value="%s(anonFlag?"anonymous":"")" autofocus></td>
    @ </tr>
    @ <tr>
    @  <td class="form_label" id="pswdlabel">Password:</td>
    @  <td><input aria-labelledby="pswdlabel" type="password" id="p" \
    @ name="p" value="" size="30">\
    if( zAnonPw && !noAnon ){
      captcha_speakit_button(uSeed, "Speak password for \"anonymous\"");
    }
    @ </td>
    @ </tr>
    @ <tr>
    @   <td></td>
    @   <td><input type="checkbox" name="remember" value="1" \
    @ id="remember-me" %s(rememberMe ? "checked=\"checked\"" : "")>
    @   <label for="remember-me">Remember me?</label></td>
    @ </tr>
    @ <tr>
    @   <td></td>
    @   <td><input type="submit" name="in" value="Login">
    @ </tr>
    if( !noAnon && login_self_register_available(0) ){
      @ <tr>
      @   <td></td>
      @   <td><input type="submit" name="self" value="Create A New Account">
      @ </tr>
    }
    if( login_self_password_reset_available() ){
      @ <tr>
      @   <td></td>
      @   <td><input type="submit" name="pwreset" value="Reset My Password">
      @ </tr>
    }
    @ </table>
    if( zAnonPw && !noAnon ){
      const char *zDecoded = captcha_decode(uSeed, 0);
      int bAutoCaptcha = db_get_boolean("auto-captcha", 0);
      char *zCaptcha = captcha_render(zDecoded);

      @ <p><input type="hidden" name="cs" value="%u(uSeed)">
      @ Visitors may enter <b>anonymous</b> as the user-ID with
      @ the 8-character hexadecimal password shown below:</p>
      @ <div class="captcha"><table class="captcha"><tr><td>\
      @ <pre class="captcha">
      @ %h(zCaptcha)
      @ </pre></td></tr></table>
      if( bAutoCaptcha ) {
         @ <input type="button" value="Fill out captcha" id='autofillButton' \
         @ data-af='%s(zDecoded)'>
         builtin_request_js("login.js");
      }
      @ </div>
      free(zCaptcha);
    }
    @ </form>
  }
  if( login_is_individual() ){
    if( g.perm.EmailAlert && alert_enabled() ){
      @ <hr>
      @ <p>Configure <a href="%R/alerts">Email Alerts</a>
      @ for user <b>%h(g.zLogin)</b></p>
    }
    if( db_table_exists("repository","forumpost") ){
      @ <hr><p>
      @ <a href="%R/timeline?ss=v&y=f&vfx&u=%t(g.zLogin)">Forum
      @ post timeline</a> for user <b>%h(g.zLogin)</b></p>
    }
  }
  @ <hr><p>
  @ Select your preferred <a href="%R/skins">site skin</a>.
  @ </p>
  @ <hr><p>
  @ Manage your <a href="%R/cookies">cookies</a>.</p>
  if( login_is_individual() ){
    if( g.perm.Password ){
      char *zRPW = fossil_random_password(12);
      @ <hr>
      @ <p>Change Password for user <b>%h(g.zLogin)</b>:</p>
      form_begin(0, "%R/login");
      @ <table>
      @ <tr><td class="form_label" id="oldpw">Old Password:</td>
      @ <td><input aria-labelledby="oldpw" type="password" name="p" \
      @ size="30"/></td></tr>
      @ <tr><td class="form_label" id="newpw">New Password:</td>
      @ <td><input aria-labelledby="newpw" type="password" name="n1" \
      @ size="30"> Suggestion: %z(zRPW)</td></tr>
      @ <tr><td class="form_label" id="reppw">Repeat New Password:</td>
      @ <td><input aria-labledby="reppw" type="password" name="n2" \
      @ size="30"></td></tr>
      @ <tr><td></td>
      @ <td><input type="submit" value="Change Password"></td></tr>
      @ </table>
      @ </form>
    }
  }
  style_finish_page();
}

/*
** Construct an appropriate URL suffix for the /resetpw page.  The
** suffix will be of the form:
**
**     UID-TIMESTAMP-HASH
**
** Where UID and TIMESTAMP are the parameters to this function, and HASH
** is constructed from information that is unique to the user in question
** and which is not publicly available.  In particular, the HASH includes
** the existing user password.  Thus, in order to construct a URL that can
** change a password, an attacker must know the current password, in which
** case the attacker does not need to construct the URL in order to take
** over the account.
**
** Return a pointer to the resulting string in memory obtained
** from fossil_malloc().
*/
char *login_resetpw_suffix(int uid, i64 timestamp){
  char *zHash;
  char *zInnerSql;
  char *zResult;
  extern int sqlite3_shathree_init(sqlite3*,char**,const sqlite3_api_routines*);
  if( timestamp<=0 ){ timestamp = time(0); }
  sqlite3_shathree_init(g.db, 0, 0);
  if( db_table_exists("repository","subscriber") ){
    zInnerSql = mprintf(
      "SELECT %lld, login, pw, cookie, user.mtime, user.info, subscriberCode"
      "  FROM user LEFT JOIN subscriber ON suname=login"
      " WHERE uid=%d", timestamp, uid);
  }else{
    zInnerSql = mprintf(
      "SELECT %lld, login, pw, cookie, user.mtime, user.info"
      "  FROM user WHERE uid=%d", timestamp, uid);
  }
  zHash = db_text(0, "SELECT lower(hex(sha3_query(%Q)))", zInnerSql);
  fossil_free(zInnerSql);
  zResult = mprintf("%x-%llx-%s", uid, timestamp, zHash);
  if( strlen(zHash)<64 || strlen(zResult)<70 ){
    /* This should never happen, but if it does, we don't want it to lead
    ** to a security breach. */
    fossil_panic("insecure password reset hash generated\n");
  }
  fossil_free(zHash);
  return zResult;
}

/*
** Check to see if the "name" query parameter is a valid resetpw suffix
** for a user whose password we are allowed to reset.  If it is, then return
** the positive integer UID for that user.  If the query parameter is not
** valid, return 0.
*/
static int login_resetpw_suffix_is_valid(const char *zName){
  int i, j;
  int uid;
  i64 timestamp;
  i64 now;
  char *zHash;
  if( zName==0 || strlen(zName)<70 ) goto not_valid_suffix;
  for(i=0; fossil_isxdigit(zName[i]); i++){}
  if( i<1 || zName[i]!='-' ) goto not_valid_suffix;
  for(j=i+1; fossil_isxdigit(zName[j]); j++){}
  if( j<=i+1 || zName[j]!='-' ) goto not_valid_suffix;
  uid = strtol(zName, 0, 16);
  if( uid<=0 ) goto not_valid_suffix;
  if( !db_exists("SELECT 1 FROM user WHERE uid=%d", uid) ){
    goto not_valid_suffix;
  }
  timestamp = strtoll(&zName[i+1], 0, 16);
  now = time(0);
  if( timestamp+3600 <= now ) goto not_valid_suffix;
  zHash = login_resetpw_suffix(uid,timestamp);
  if( fossil_strcmp(zHash, zName)!=0 ){
    fossil_free(zHash);
    goto not_valid_suffix;
  }
  fossil_free(zHash);
  return uid;

not_valid_suffix:
  return 0;
}

/*
** COMMAND: test-resetpw-url
** Usage: fossil test-resetpw-url UID
**
** Generate and verify a /resetpw URL for user UID.
**
** This command is intended for unit testing the login_resetpw_suffix()
** and login_resetpw_suffix_is_valid() functions.
*/
void test_resetpw_url(void){
  char *zSuffix;
  int uid;
  int xuid;
  char *zLogin;
  int i;
  db_find_and_open_repository(0, 0);
  verify_all_options();
  if( g.argc<3 ){
    usage("UID ...");
  }
  for(i=2; i<g.argc; i++){
    uid = atoi(g.argv[i]);
    zSuffix = login_resetpw_suffix(uid, 0);
    xuid = login_resetpw_suffix_is_valid(zSuffix);
    if( xuid>0 ){
      zLogin = db_text(0, "SELECT login FROM user WHERE uid=%d", xuid);
    }else{
      zLogin = 0;
    }
    fossil_print("/resetpw/%s   %d (%s)\n",
                 zSuffix, xuid, zLogin ? zLogin : "???");
    fossil_free(zSuffix);
    fossil_free(zLogin);
  }
}

/*
** WEBPAGE: resetpw
**
** The URL format must be like this:
**
**      /resetpw/UID-TIMESTAMP-HASH
**
** Where UID is the uid of the user whose password is to be reset,
** TIMESTAMP is the unix timestamp when the request was made, and
** HASH is a hash based on UID, TIMESTAMP, and other information that
** is unavailable to an attacher.
**
** With no other arguments, a form is present which allows the user to
** enter a new password.  When the SUBMIT button is pressed, a POST request
** back to the same URL that will change the password.
*/
void login_resetpw(void){
  const char *zName;
  int uid;
  char *zRPW;
  const char *zNew1, *zNew2;

  style_set_current_feature("resetpw");
  style_header("Reset Password");
  style_adunit_config(ADUNIT_OFF);
  zName = PD("name","");
  uid = login_resetpw_suffix_is_valid(zName);
  if( uid==0 ){
    @ <p><span class="loginError">
    @ This password-reset URL is invalid, probably because it has expired.
    @ Password-reset URLs have a short lifespan.
    @ </span></p>
    style_finish_page();
    sleep(1);  /* Introduce a small delay on an invalid suffix as an
               ** extra defense against search attacks */
    return;
  }
  fossil_redirect_to_https_if_needed(1);
  login_set_uid(uid, 0);
  if( g.perm.Setup || g.perm.Admin || !g.perm.Password || g.zLogin==0 ){
    @ <p><span class="loginError">
    @ Cannot change the password for user <b>%h(g.zLogin)</b>.
    @ </span></p>
    style_finish_page();
    return;
  }
  if( (zNew1 = P("n1"))!=0 && (zNew2 = P("n2"))!=0 ){
    if( fossil_strcmp(zNew1,zNew2)!=0 ){
      @ <p><span class="loginError">
      @ The two copies of your new passwords do not match.
      @ Try again.
      @ </span></p>
    }else{
      char *zNewPw = sha1_shared_secret(zNew1, g.zLogin);
      char *zNewPw = sha1_shared_secret(zNew1, g.zLogin, 0);
      char *zChngPw;
      char *zErr;
      int rc;

      /* vvvvvvv---  tag-20230106-2 ----vvvvvv
      **
      ** Replicate changes made below to tag-20230106-1
      */
      admin_log("password change for user %s", g.zLogin);
      db_unprotect(PROTECT_USER);
      db_multi_exec(
         "UPDATE user SET pw=%Q WHERE uid=%d", zNewPw, g.userUid
      );
      zChngPw = mprintf(
         "UPDATE user"
         "   SET pw=shared_secret(%Q,%Q,"
         "        (SELECT value FROM config WHERE name='project-code'))"
         " WHERE login=%Q",
         zNew1, g.zLogin, g.zLogin
      );
      fossil_free(zNewPw);
      rc = login_group_sql(zChngPw, "<p>", "</p>\n", &zErr);
      db_protect_pop();
      /*
      ** ^^^^^^^^---  tag-20230106-2 ----^^^^^^^^^
      **
      ** Replicate changes above to tag-20230106-1
      */
      redirect_to_g();
      return;
    }
  }
  uid = isValidAnonymousLogin(zUsername, zPasswd);
  if( uid>0 ){

      if( rc ){
        @ <p><span class='loginError'>
        @ %s(zErr);
        @ </span></p>
        fossil_free(zErr);
      }else{
        @ <p>Password changed successfully.  Go to the
        @ <a href="%R/login?u=%t(g.zLogin)">Login</a> page and log in
        @ using the new password to continue.
        @ </p>
        style_finish_page();
        return;
      }
    }
  }
  zRPW = fossil_random_password(12);
  @ <p>Change Password for user <b>%h(g.zLogin)</b>:</p>
  form_begin(0, "%R/resetpw");
  @ <input type='hidden' name='name' value='%h(zName)'>
  @ <table>
    char *zNow;                  /* Current time (julian day number) */
    const char *zIpAddr;         /* IP address of requestor */
    char *zCookie;               /* The login cookie */
    const char *zCookieName;     /* Name of the login cookie */
    Blob b;                      /* Blob used during cookie construction */

    zIpAddr = PD("REMOTE_ADDR","nil");
    zCookieName = login_cookie_name();
    zNow = db_text("0", "SELECT julianday('now')");
    blob_init(&b, zNow, -1);
    blob_appendf(&b, "/%z/%s", ipPrefix(zIpAddr), db_get("captcha-secret",""));
    sha1sum_blob(&b, &b);
    zCookie = sqlite3_mprintf("anon/%s/%s", zNow, blob_buffer(&b));
    blob_reset(&b);
    free(zNow);
  @ <tr><td class="form_label" id="newpw">New Password:</td>
  @ <td><input aria-labelledby="newpw" type="password" name="n1" \
  @ size="30"> Suggestion: %z(zRPW)</td></tr>
  @ <tr><td class="form_label" id="reppw">Repeat New Password:</td>
  @ <td><input aria-labledby="reppw" type="password" name="n2" \
  @ size="30"></td></tr>
  @ <tr><td></td>
  @ <td><input type="submit" value="Change Password"></td></tr>
  @ </table>
  @ </form>
    cgi_set_cookie(zCookieName, zCookie, 0, 6*3600);
    redirect_to_g();
  }
  if( zUsername!=0 && zPasswd!=0 && zPasswd[0]!=0 ){
    zSha1Pw = sha1_shared_secret(zPasswd, zUsername);
    uid = db_int(0,
        "SELECT uid FROM user"
        " WHERE login=%Q"
  style_finish_page();
}

/*
** Attempt to find login credentials for user zLogin on a peer repository
** with project code zCode.  Transfer those credentials to the local
** repository.
**
** Return true if a transfer was made and false if not.
*/
static int login_transfer_credentials(
        "   AND login NOT IN ('anonymous','nobody','developer','reader')"
        "   AND (pw=%Q OR pw=%Q)",
        zUsername, zPasswd, zSha1Pw
    );
  const char *zLogin,          /* Login we are looking for */
  const char *zCode,           /* Project code of peer repository */
  const char *zHash            /* HASH from login cookie HASH/CODE/LOGIN */
){
    if( uid<=0 ){
      sleep(1);
      zErrMsg = 
         @ <p><font color="red">
         @ You entered an unknown user or an incorrect password.
         @ </font></p>
      ;
  sqlite3 *pOther = 0;         /* The other repository */
  sqlite3_stmt *pStmt;         /* Query against the other repository */
  char *zSQL;                  /* SQL of the query against other repo */
  char *zOtherRepo;            /* Filename of the other repository */
  int rc;                      /* Result code from SQLite library functions */
  int nXfer = 0;               /* Number of credentials transferred */

    }else{
      char *zCookie;
  zOtherRepo = db_text(0,
       "SELECT value FROM config WHERE name='peer-repo-%q'",
       zCode
      const char *zCookieName = login_cookie_name();
      const char *zExpire = db_get("cookie-expire","8766");
      int expires = atoi(zExpire)*3600;
  );
      const char *zIpAddr = PD("REMOTE_ADDR","nil");
 
      zCookie = db_text(0, "SELECT '%d/' || hex(randomblob(25))", uid);
      cgi_set_cookie(zCookieName, zCookie, 0, expires);
  if( zOtherRepo==0 ) return 0;  /* No such peer repository */

  rc = sqlite3_open_v2(
       zOtherRepo, &pOther,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc==SQLITE_OK ){
    sqlite3_create_function(pOther,"now",0,SQLITE_UTF8,0,db_now_function,0,0);
    sqlite3_create_function(pOther, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);
    sqlite3_busy_timeout(pOther, 5000);
    zSQL = mprintf(
      "SELECT cexpire FROM user"
      " WHERE login=%Q"
      "   AND octet_length(cap)>0"
      "   AND octet_length(pw)>0"
      "   AND cexpire>julianday('now')"
      "   AND constant_time_cmp(cookie,%Q)=0",
      zLogin, zHash
    );
    pStmt = 0;
    rc = sqlite3_prepare_v2(pOther, zSQL, -1, &pStmt, 0);
    if( rc==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){
      db_unprotect(PROTECT_USER);
      db_multi_exec(
        "UPDATE user SET cookie=%Q, ipaddr=%Q, "
        "  cexpire=julianday('now')+%d/86400.0 WHERE uid=%d",
        "UPDATE user SET cookie=%Q, cexpire=%.17g"
        " WHERE login=%Q",
        zCookie, zIpAddr, expires, uid
        zHash,
        sqlite3_column_double(pStmt, 0), zLogin
      );
      redirect_to_g();
      db_protect_pop();
      nXfer++;
    }
    sqlite3_finalize(pStmt);
  }
  style_header("Login/Logout");
  @ %s(zErrMsg)
  @ <form action="login" method="POST">
  if( P("g") ){
    @ <input type="hidden" name="g" value="%h(P("g"))">
  }
  @ <table align="left" hspace="10">
  sqlite3_close(pOther);
  fossil_free(zOtherRepo);
  return nXfer;
}

  @ <tr>
  @   <td align="right">User ID:</td>
  if( anonFlag ){
    @   <td><input type="text" id="u" name="u" value="anonymous" size=30></td>
  }else{
/*
** Return TRUE if zLogin is one of the special usernames
*/
int login_is_special(const char *zLogin){
  if( fossil_strcmp(zLogin, "anonymous")==0 ) return 1;
  if( fossil_strcmp(zLogin, "nobody")==0 ) return 1;
  if( fossil_strcmp(zLogin, "developer")==0 ) return 1;
  if( fossil_strcmp(zLogin, "reader")==0 ) return 1;
  return 0;
    @   <td><input type="text" id="u" name="u" value="" size=30></td>
  }
  @ </tr>
}

  @ <tr>
  @  <td align="right">Password:</td>
  @   <td><input type="password" id="p" name="p" value="" size=30></td>
  @ </tr>
  if( g.zLogin==0 ){
/*
** Lookup the uid for a non-built-in user with zLogin and zCookie.
** Return 0 if not found.
**
** Note that this only searches for logged-in entries with matching
** zCookie (db: user.cookie) entries.
*/
static int login_find_user(
  const char *zLogin,            /* User name */
  const char *zCookie            /* Login cookie value */
){
  int uid;
  if( login_is_special(zLogin) ) return 0;
  uid = db_int(0,
    "SELECT uid FROM user"
    " WHERE login=%Q"
    "   AND cexpire>julianday('now')"
    "   AND octet_length(cap)>0"
    "   AND octet_length(pw)>0"
    "   AND constant_time_cmp(cookie,%Q)=0",
    zLogin, zCookie
    zAnonPw = db_text(0, "SELECT pw FROM user"
                         " WHERE login='anonymous'"
                         "   AND cap!=''");
  }
  @ <tr>
  @   <td></td>
  @   <td><input type="submit" name="in" value="Login"></td>
  @ </tr>
  @ </table>
  @ <script>document.getElementById('u').focus()</script>
  if( g.zLogin==0 ){
    @ <p>Enter
  }else{
    @ <p>You are currently logged in as <b>%h(g.zLogin)</b></p>
    @ <p>To change your login to a different user, enter
  }
  );
  return uid;
}

/*
** Attempt to use Basic Authentication to establish the user.  Return the
** (non-zero) uid if successful.  Return 0 if it does not work.
*/
static int login_basic_authentication(const char *zIpAddr){
  const char *zAuth = PD("HTTP_AUTHORIZATION", 0);
  int i;
  int uid = 0;
  int nDecode = 0;
  char *zDecode = 0;
  const char *zUsername = 0;
  const char *zPasswd = 0;

  if( zAuth==0 ) return 0;             /* Fail: No Authentication: header */
  while( fossil_isspace(zAuth[0]) ) zAuth++;  /* Skip leading whitespace */
  if( strncmp(zAuth, "Basic ", 6)!=0 ){
    return 0;  /* Fail: Not Basic Authentication */
  }

  /* Parse out the username and password, separated by a ":" */
  zAuth += 6;
  while( fossil_isspace(zAuth[0]) ) zAuth++;
  zDecode = decode64(zAuth, &nDecode);

  for(i=0; zDecode[i] && zDecode[i]!=':'; i++){}
  if( zDecode[i] ){
    zDecode[i] = 0;
    zUsername = zDecode;
    zPasswd = &zDecode[i+1];

    /* Attempting to log in as the user provided by HTTP
    ** basic auth
    */
    uid = login_search_uid(&zUsername, zPasswd);
    if( uid>0 ){
      record_login_attempt(zUsername, zIpAddr, 1);
    }else{
      record_login_attempt(zUsername, zIpAddr, 0);

      /* The user attempted to login specifically with HTTP basic
      ** auth, but provided invalid credentials. Inform them of
      ** the failed login attempt via 401.
      */
      cgi_set_status(401, "Unauthorized");
      cgi_reply();
      fossil_exit(0);
    }
  @ your user-id and password at the left and press the
  @ "Login" button.  Your user name will be stored in a browser cookie.
  @ You must configure your web browser to accept cookies in order for
  @ the login to take.</p>
  if( zAnonPw ){
    unsigned int uSeed = captcha_seed();
    char const *zDecoded = captcha_decode(uSeed);
    int bAutoCaptcha = db_get_boolean("auto-captcha", 0);
    char *zCaptcha = captcha_render(zDecoded);

    @ <input type="hidden" name="cs" value="%u(uSeed)"/>
    @ <p>Visitors may enter <b>anonymous</b> as the user-ID with
    @ the 8-character hexadecimal password shown below:</p>
  }
  fossil_free(zDecode);
  return uid;
}

/*
** SETTING: robot-restrict                width=40 block-text
** The VALUE of this setting is a list of GLOB patterns that match
** pages for which complex HTTP requests from robots should be disallowed.
** The recommended value for this setting is:
** 
**      timeline,vdiff,fdiff,annotate,blame
** 
*/

/*
** Check to see if the current HTTP request is a complex request that
** is coming from a robot and if access should restricted for such robots.
** For the purposes of this module, a "complex request" is an HTTP
** request with one or more query parameters other than "name".
**
** If this routine determines that robots should be restricted, then
** this routine publishes a redirect to the honeypot and exits without
** returning to the caller.
    @ <center><table border="1" cellpadding="10"><tr><td><pre>
    @ %s(zCaptcha)
    @ </pre></td></tr></table>
**
** This routine believes that this is a complex request is coming from
** a robot if all of the following are true:
    if( bAutoCaptcha ) {
        @ <input type="button" value="Fill out captcha"
        @  onclick="document.getElementById('u').value='anonymous';
        @           document.getElementById('p').value='%s(zDecoded)';"/>
**
**    *   The user is "nobody".
**    *   Either the REFERER field of the HTTP header is missing or empty,
**        or the USERAGENT field of the HTTP header suggests that
**        the request as coming from a robot.
**    *   There are one or more query parameters other than "name".
**
** Robot restrictions are governed by settings.
**
**    robot-restrict    The value is a list of GLOB patterns for pages
**                      that should restrict robot access.  No restrictions
**                      are applied if this setting is undefined or is
**                      an empty string.
    }
    @ </center>
    free(zCaptcha);
*/
void login_restrict_robot_access(void){
  const char *zReferer;
  const char *zGlob;
  int isMatch = 1;
  }
  if( g.zLogin ){
    @ <br clear="both"><hr>
  if( g.zLogin!=0 ) return;
  zGlob = db_get("robot-restrict",0);
    @ <p>To log off the system (and delete your login cookie)
    @  press the following button:<br>
    @ <input type="submit" name="out" value="Logout"></p>
  if( zGlob==0 || zGlob[0]==0 ) return;
  if( g.isHuman ){
    zReferer = P("HTTP_REFERER");
    if( zReferer && zReferer[0]!=0 ) return;
  }
  if( cgi_qp_count()<1 ) return;
  isMatch = glob_multi_match(zGlob, g.zPath);
  if( !isMatch ) return;
  @ </form>
  if( g.okPassword ){
    @ <br clear="both"><hr>

  /* If we reach this point, it means we have a situation where we
  ** want to restrict the activity of a robot.
    @ <p>To change your password, enter your old password and your
    @ new password twice below then press the "Change Password"
    @ button.</p>
  */
  g.isHuman = 0;
  (void)exclude_spiders(0);
    @ <form action="login" method="POST">
    @ <table>
  cgi_reply();
    @ <tr><td align="right">Old Password:</td>
    @ <td><input type="password" name="p" size=30></td></tr>
    @ <tr><td align="right">New Password:</td>
    @ <td><input type="password" name="n1" size=30></td></tr>
    @ <tr><td align="right">Repeat New Password:</td>
    @ <td><input type="password" name="n2" size=30></td></tr>
    @ <tr><td></td>
    @ <td><input type="submit" value="Change Password"></td></tr>
    @ </table>
    @ </form>
  }
  style_footer();
}


  fossil_exit(0);
}

/*
** When this routine is called, we know that the request does not
** have a login on the present repository.  This routine checks to
** see if their login cookie might be for another member of the
** login-group.
**
** If this repository is not a part of any login group, then this
** routine always returns false.
**
** If this repository is part of a login group, and the login cookie
** appears to be well-formed, then return true.  That might be a
** false-positive, as we don't actually check to see if the login
** cookie is valid for some other repository.  But false-positives
** are ok.  This routine is used for robot defense only.
*/
int login_cookie_wellformed(void){
  const char *zCookie;
  int n;
  zCookie = P(login_cookie_name());
  if( zCookie==0 ){
    return 0;
  }
  if( !db_exists("SELECT 1 FROM config WHERE name='login-group-code'") ){
    return 0;
  }
  for(n=0; fossil_isXdigit(zCookie[n]); n++){}
  return n>48 && zCookie[n]=='/' && zCookie[n+1]!=0;
}

/*
** This routine examines the login cookie to see if it exists and
** and is valid.  If the login cookie checks out, it then sets 
** g.zUserUuid appropriately.
** is valid.  If the login cookie checks out, it then sets global
** variables appropriately.
**
**    g.userUid      Database USER.UID value.  Might be -1 for "nobody"
**    g.zLogin       Database USER.LOGIN value.  NULL for user "nobody"
**    g.perm         Permissions granted to this user
**    g.anon         Permissions that would be available to anonymous
**    g.isHuman      True if the user is human, not a spider or robot
**    g.perm         Populated based on user account's capabilities
**
*/
void login_check_credentials(void){
  int uid = 0;                  /* User id */
  const char *zCookie;          /* Text of the login cookie */
  const char *zRemoteAddr;      /* IP address of the requestor */
  const char *zIpAddr;          /* Raw IP address of the requestor */
  const char *zCap = 0;         /* Capability string */
  const char *zLogin = 0;       /* Login user for credentials */

  /* Only run this check once.  */
  if( g.userUid!=0 ) return;

  sqlite3_create_function(g.db, "constant_time_cmp", 2, SQLITE_UTF8, 0,
                  constant_time_cmp_function, 0, 0);

  /* If the HTTP connection is coming over 127.0.0.1 and if
  ** local login is disabled and if we are using HTTP and not HTTPS, 
  ** local login is disabled and if we are using HTTP and not HTTPS,
  ** then there is no need to check user credentials.
  **
  ** This feature allows the "fossil ui" command to give the user
  ** full access rights without having to log in.
  */
  zRemoteAddr = PD("REMOTE_ADDR","nil");
  if( strcmp(zRemoteAddr, "127.0.0.1")==0
  zIpAddr = PD("REMOTE_ADDR","nil");
  if( ( cgi_is_loopback(zIpAddr)
       || (g.fSshClient & CGI_SSH_CLIENT)!=0 )
   && g.useLocalauth
   && db_get_int("localauth",0)==0
   && P("HTTPS")==0
  ){
    char *zSeed;
    if( g.localOpen ) zLogin = db_lget("default-user",0);
    if( zLogin!=0 ){
      uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zLogin);
    }else{
    uid = db_int(0, "SELECT uid FROM user WHERE cap LIKE '%%s%%'");
      uid = db_int(0, "SELECT uid FROM user WHERE cap LIKE '%%s%%'");
    }
    g.zLogin = db_text("?", "SELECT login FROM user WHERE uid=%d", uid);
    zCap = "s";
    zCap = "sxy";
    g.noPswd = 1;
    strcpy(g.zCsrfToken, "localhost");
    g.isHuman = 1;
    zSeed = db_text("??", "SELECT uid||quote(login)||quote(pw)||quote(cookie)"
                          "  FROM user WHERE uid=%d", uid);
    login_create_csrf_secret(zSeed);
    fossil_free(zSeed);
  }

  /* Check the login cookie to see if it matches a known valid user.
  */
  if( uid==0 && (zCookie = P(login_cookie_name()))!=0 ){
    if( isdigit(zCookie[0]) ){
      /* Cookies of the form "uid/randomness".  There must be a
      ** corresponding entry in the user table. */
      uid = db_int(0, 
            "SELECT uid FROM user"
    /* Parse the cookie value up into HASH/ARG/USER */
    char *zHash = fossil_strdup(zCookie);
    char *zArg = 0;
    char *zUser = 0;
    int i, c;
    for(i=0; (c = zHash[i])!=0; i++){
      if( c=='/' ){
        zHash[i++] = 0;
        if( zArg==0 ){
          zArg = &zHash[i];
        }else{
          zUser = &zHash[i];
          break;
        }
      }
    }
    if( zUser==0 ){
            " WHERE uid=%d"
            "   AND cookie=%Q"
      /* Invalid cookie */
            "   AND ipaddr=%Q"
            "   AND cexpire>julianday('now')",
            atoi(zCookie), zCookie, zRemoteAddr
         );
    }else if( memcmp(zCookie,"anon/",5)==0 ){
      /* Cookies of the form "anon/TIME/HASH".  The TIME must not be
      ** too old and the sha1 hash of TIME+IPADDR+SECRET must match HASH.
    }else if( fossil_strcmp(zUser, "anonymous")==0 ){
      /* Cookies of the form "HASH/TIME/anonymous".  The TIME must not be
      ** too old and the sha1 hash of TIME/SECRET must match HASH.
      ** SECRET is the "captcha-secret" value in the repository.
      */
      double rTime;
      double rTime = atof(zArg);
      int i;
      Blob b;
      char *zSecret;
      rTime = atof(&zCookie[5]);
      for(i=5; zCookie[i] && zCookie[i]!='/'; i++){}
      blob_init(&b, &zCookie[5], i-5);
      if( zCookie[i]=='/' ){ i++; }
      int n = 0;

      do{
        blob_zero(&b);
        zSecret = captcha_secret(n++);
        if( zSecret==0 ) break;
      blob_append(&b, "/", 1);
      blob_appendf(&b, "%z/%s", ipPrefix(zRemoteAddr),
        blob_appendf(&b, "%s/%s", zArg, zSecret);
                   db_get("captcha-secret",""));
      sha1sum_blob(&b, &b);
      uid = db_int(0, 
          "SELECT uid FROM user WHERE login='anonymous'"
          " AND length(cap)>0"
          " AND length(pw)>0"
          " AND %f+0.25>julianday('now')"
        sha1sum_blob(&b, &b);
        if( fossil_strcmp(zHash, blob_str(&b))==0 ){
          uid = db_int(0,
              "SELECT uid FROM user WHERE login='anonymous'"
              " AND octet_length(cap)>0"
              " AND octet_length(pw)>0"
              " AND %.17g+0.25>julianday('now')",
          " AND %Q=%Q",
          rTime, &zCookie[i], blob_buffer(&b)
      );
              rTime
          );
        }
      }while( uid==0 );
      blob_reset(&b);
    }else{
      /* Cookies of the form "HASH/CODE/USER".  Search first in the
      ** local user table, then the user table for project CODE if we
      ** are part of a login-group.
      */
      uid = login_find_user(zUser, zHash);
      if( uid==0 && login_transfer_credentials(zUser,zArg,zHash) ){
        uid = login_find_user(zUser, zHash);
        if( uid ){
          record_login_attempt(zUser, zIpAddr, 1);
        }else{
          /* The login cookie is a valid login for project CODE, but no
          ** user named USER exists on this repository.  Cannot login as
          ** USER, but at least give them "anonymous" login. */
          uid = db_int(0, "SELECT uid FROM user WHERE login='anonymous'"
                          " AND octet_length(cap)>0"
                          " AND octet_length(pw)>0");
    }
        }
    sqlite3_snprintf(sizeof(g.zCsrfToken), g.zCsrfToken, "%.10s", zCookie);
      }
    }
    login_create_csrf_secret(zHash);
  }

  /* If no user found and the REMOTE_USER environment variable is set,
  ** the accept the value of REMOTE_USER as the user.
  ** then accept the value of REMOTE_USER as the user.
  */
  if( uid==0 ){
    const char *zRemoteUser = P("REMOTE_USER");
    if( zRemoteUser && db_get_boolean("remote_user_ok",0) ){
      uid = db_int(0, "SELECT uid FROM user WHERE login=%Q"
                      " AND octet_length(cap)>0 AND octet_length(pw)>0",
                      " AND length(cap)>0 AND length(pw)>0", zRemoteUser);
                      zRemoteUser);
    }
  }

  /* If the request didn't provide a login cookie or the login cookie didn't
  ** match a known valid user, check the HTTP "Authorization" header and
  ** see if those credentials are valid for a known user.
  */
  if( uid==0 && db_get_boolean("http_authentication_ok",0) ){
    uid = login_basic_authentication(zIpAddr);
  }

  /* Check for magic query parameters "resid" (for the username) and
  ** "token" for the password.  Both values (if they exist) will be
  ** obfuscated.
  */
  if( uid==0 ){
    char *zUsr, *zPW;
    if( (zUsr = unobscure(P("resid")))!=0
     && (zPW = unobscure(P("token")))!=0
    ){
      char *zSha1Pw = sha1_shared_secret(zPW, zUsr, 0);
      uid = db_int(0, "SELECT uid FROM user"
                      " WHERE login=%Q"
                      " AND (constant_time_cmp(pw,%Q)=0"
                      "      OR constant_time_cmp(pw,%Q)=0)",
                      zUsr, zSha1Pw, zPW);
      fossil_free(zSha1Pw);
    }
  }

  /* If no user found yet, try to log in as "nobody" */
  if( uid==0 ){
    uid = db_int(0, "SELECT uid FROM user WHERE login='nobody'");
    if( uid==0 ){
      /* If there is no user "nobody", then make one up - with no privileges */
      uid = -1;
      zCap = "";
    }
    login_create_csrf_secret("none");
  }
    strcpy(g.zCsrfToken, "none");
  }


  login_set_uid(uid, zCap);

  /* Maybe restrict access to robots */
  login_restrict_robot_access();
}

/*
** Set the current logged in user to be uid.  zCap is precomputed
** (override) capabilities.  If zCap==0, then look up the capabilities
** in the USER table.
*/
int login_set_uid(int uid, const char *zCap){
  const char *zPublicPages = 0; /* GLOB patterns of public pages */

  /* At this point, we know that uid!=0.  Find the privileges associated
  ** with user uid.
  */
  assert( uid!=0 );
  if( zCap==0 ){
    Stmt s;
    db_prepare(&s, "SELECT login, cap FROM user WHERE uid=%d", uid);
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    fprintf(stderr, "# login: [%s] with capabilities [%s]\n", g.zLogin, zCap);
  }

  /* Set the global variables recording the userid and login.  The
  ** "nobody" user is a special case in that g.zLogin==0.
  */
  g.userUid = uid;
  if( g.zLogin && strcmp(g.zLogin,"nobody")==0 ){
  if( fossil_strcmp(g.zLogin,"nobody")==0 ){
    g.zLogin = 0;
  }
  if( PB("isrobot") ){
    g.isHuman = 0;
  }else if( g.zLogin==0 ){
    g.isHuman = isHuman(P("HTTP_USER_AGENT"));
  }else{
    g.isHuman = 1;

  }

  /* Set the capabilities */
  login_set_capabilities(zCap);
  login_replace_capabilities(zCap, 0);

  /* The auto-hyperlink setting allows hyperlinks to be displayed for users
  ** who do not have the "h" permission as long as their UserAgent string
  ** makes it appear that they are human.  Check to see if auto-hyperlink is
  ** enabled for this repository and make appropriate adjustments to the
  ** permission flags if it is.  This should be done before the permissions
  ** are (potentially) copied to the anonymous permission set; otherwise,
  ** those will be out-of-sync.
  */
  if( zCap[0] && !g.perm.Hyperlink && g.isHuman ){
    int autoLink = db_get_int("auto-hyperlink",1);
    if( autoLink==1 ){
      g.jsHref = 1;
      g.perm.Hyperlink = 1;
    }else if( autoLink==2 ){
      g.perm.Hyperlink = 1;
    }
  }

  /*
  ** At this point, the capabilities for the logged in user are not going
  ** to be modified anymore; therefore, we can copy them over to the ones
  ** for the anonymous user.
  **
  ** WARNING: In the future, please do not add code after this point that
  **          modifies the capabilities for the logged in user.
  */
  login_set_anon_nobody_capabilities();
}


  /* If the public-pages glob pattern is defined and REQUEST_URI matches
  ** one of the globs in public-pages, then also add in all default-perms
  ** permissions.
  */
  zPublicPages = db_get("public-pages",0);
  if( zPublicPages!=0 ){
    const char *zUri = PD("REQUEST_URI","");
    zUri += (int)strlen(g.zTop);
    if( glob_multi_match(zPublicPages, zUri) ){
      login_set_capabilities(db_get("default-perms", "u"), 0);
    }
  }
  return g.zLogin!=0;
}

/*
** Memory of settings
*/
static int login_anon_once = 1;

/*
** Add the default privileges of users "nobody" and "anonymous" as appropriate
** for the user g.zLogin.
** Add to g.perm the default privileges of users "nobody" and/or "anonymous"
** as appropriate for the user g.zLogin.
**
** This routine also sets up g.anon to be either a copy of g.perm for
** all logged in uses, or the privileges that would be available to "anonymous"
** if g.zLogin==0 (meaning that the user is "nobody").
*/
void login_set_anon_nobody_capabilities(void){
  static int once = 1;
  if( g.zLogin && once ){
  if( login_anon_once ){
    const char *zCap;
    /* All logged-in users inherit privileges from "nobody" */
    /* All users get privileges from "nobody" */
    zCap = db_text("", "SELECT cap FROM user WHERE login = 'nobody'");
    login_set_capabilities(zCap);
    if( strcmp(g.zLogin, "anonymous")!=0 ){
    login_set_capabilities(zCap, 0);
    zCap = db_text("", "SELECT cap FROM user WHERE login = 'anonymous'");
    if( g.zLogin && fossil_strcmp(g.zLogin, "nobody")!=0 ){
      /* All logged-in users inherit privileges from "anonymous" */
      login_set_capabilities(zCap, 0);
      g.anon = g.perm;
    }else{
      zCap = db_text("", "SELECT cap FROM user WHERE login = 'anonymous'");
      login_set_capabilities(zCap);
      /* Record the privileges of anonymous in g.anon */
      g.anon = g.perm;
      login_set_capabilities(zCap, LOGIN_ANON);
    }
    once = 0;
    login_anon_once = 0;
  }
}

/*
** Flags passed into the 2nd argument of login_set/replace_capabilities().
*/
#if INTERFACE
#define LOGIN_IGNORE_UV  0x01         /* Ignore "u" and "v" */
#define LOGIN_ANON       0x02         /* Use g.anon instead of g.perm */
#endif
** Set the global capability flags based on a capability string.

/*
** Adds all capability flags in zCap to g.perm or g.anon.
*/
void login_set_capabilities(const char *zCap){
void login_set_capabilities(const char *zCap, unsigned flags){
  static char *zDev = 0;
  static char *zUser = 0;
  int i;
  FossilUserPerms *p = (flags & LOGIN_ANON) ? &g.anon : &g.perm;
  if(NULL==zCap){
    return;
  }
  for(i=0; zCap[i]; i++){
    switch( zCap[i] ){
      case 's':   g.okSetup = 1;  /* Fall thru into Admin */
      case 'a':   g.okAdmin = g.okRdTkt = g.okWrTkt = g.okZip =
                              g.okRdWiki = g.okWrWiki = g.okNewWiki =
                              g.okApndWiki = g.okHistory = g.okClone = 
                              g.okNewTkt = g.okPassword = g.okRdAddr =
                              g.okTktFmt = g.okAttach = g.okApndTkt = 1;
                              /* Fall thru into Read/Write */
      case 'i':   g.okRead = g.okWrite = 1;                     break;
      case 'o':   g.okRead = 1;                                 break;
      case 'z':   g.okZip = 1;                                  break;
      case 's':   p->Setup = 1; /* Fall thru into Admin */
      case 'a':   p->Admin = p->RdTkt = p->WrTkt = p->Zip =
                             p->RdWiki = p->WrWiki = p->NewWiki =
                             p->ApndWiki = p->Hyperlink = p->Clone =
                             p->NewTkt = p->Password = p->RdAddr =
                             p->TktFmt = p->Attach = p->ApndTkt =
                             p->ModWiki = p->ModTkt =
                             p->RdForum = p->WrForum = p->ModForum =
                             p->WrTForum = p->AdminForum = p->Chat =
                             p->EmailAlert = p->Announce = p->Debug = 1;
                             /* Fall thru into Read/Write */
      case 'i':   p->Read = p->Write = 1;                      break;
      case 'o':   p->Read = 1;                                 break;
      case 'z':   p->Zip = 1;                                  break;

      case 'h':   p->Hyperlink = 1;                            break;
      case 'd':   g.okDelete = 1;                               break;
      case 'h':   g.okHistory = 1;                              break;
      case 'g':   g.okClone = 1;                                break;
      case 'p':   g.okPassword = 1;                             break;
      case 'g':   p->Clone = 1;                                break;
      case 'p':   p->Password = 1;                             break;

      case 'j':   p->RdWiki = 1;                               break;
      case 'k':   p->WrWiki = p->RdWiki = p->ApndWiki =1;      break;
      case 'm':   p->ApndWiki = 1;                             break;
      case 'f':   p->NewWiki = 1;                              break;
      case 'l':   p->ModWiki = 1;                              break;

      case 'j':   g.okRdWiki = 1;                               break;
      case 'k':   g.okWrWiki = g.okRdWiki = g.okApndWiki =1;    break;
      case 'm':   g.okApndWiki = 1;                             break;
      case 'f':   g.okNewWiki = 1;                              break;

      case 'e':   g.okRdAddr = 1;                               break;
      case 'r':   g.okRdTkt = 1;                                break;
      case 'n':   g.okNewTkt = 1;                               break;
      case 'w':   g.okWrTkt = g.okRdTkt = g.okNewTkt = 
                  g.okApndTkt = 1;                              break;
      case 'c':   g.okApndTkt = 1;                              break;
      case 't':   g.okTktFmt = 1;                               break;
      case 'b':   g.okAttach = 1;                               break;
      case 'e':   p->RdAddr = 1;                               break;
      case 'r':   p->RdTkt = 1;                                break;
      case 'n':   p->NewTkt = 1;                               break;
      case 'w':   p->WrTkt = p->RdTkt = p->NewTkt =
                  p->ApndTkt = 1;                              break;
      case 'c':   p->ApndTkt = 1;                              break;
      case 'q':   p->ModTkt = 1;                               break;
      case 't':   p->TktFmt = 1;                               break;
      case 'b':   p->Attach = 1;                               break;
      case 'x':   p->Private = 1;                              break;
      case 'y':   p->WrUnver = 1;                              break;

      case '6':   p->AdminForum = 1;
      case '5':   p->ModForum = 1;
      case '4':   p->WrTForum = 1;
      case '3':   p->WrForum = 1;
      case '2':   p->RdForum = 1;                              break;

      case '7':   p->EmailAlert = 1;                           break;
      case 'A':   p->Announce = 1;                             break;
      case 'C':   p->Chat = 1;                                 break;
      case 'D':   p->Debug = 1;                                break;

      /* The "u" privileges is a little different.  It recursively 
      /* The "u" privilege recursively
      ** inherits all privileges of the user named "reader" */
      case 'u': {
        if( zUser==0 ){
        if( p->XReader==0 ){
          const char *zUser;
          p->XReader = 1;
          zUser = db_text("", "SELECT cap FROM user WHERE login='reader'");
          login_set_capabilities(zUser);
          login_set_capabilities(zUser, flags);
        }
        break;
      }

      /* The "v" privileges is a little different.  It recursively 
      /* The "v" privilege recursively
      ** inherits all privileges of the user named "developer" */
      case 'v': {
        if( zDev==0 ){
        if( p->XDeveloper==0 ){
          const char *zDev;
          p->XDeveloper = 1;
          zDev = db_text("", "SELECT cap FROM user WHERE login='developer'");
          login_set_capabilities(zDev);
          login_set_capabilities(zDev, flags);
        }
        break;
      }
    }
  }
}

/*
** Zeroes out g.perm and calls login_set_capabilities(zCap,flags).
*/
void login_replace_capabilities(const char *zCap, unsigned flags){
  memset(&g.perm, 0, sizeof(g.perm));
  login_set_capabilities(zCap, flags);
  login_anon_once = 1;
}

/*
** If the current login lacks any of the capabilities listed in
** the input, then return 0.  If all capabilities are present, then
** return 1.
**
** As a special case, the 'L' pseudo-capability ID means "is logged
** in" and will return true for any non-guest user.
*/
int login_has_capability(const char *zCap, int nCap){
int login_has_capability(const char *zCap, int nCap, u32 flgs){
  int i;
  int rc = 1;
  FossilUserPerms *p = (flgs & LOGIN_ANON) ? &g.anon : &g.perm;
  if( nCap<0 ) nCap = strlen(zCap);
  for(i=0; i<nCap && rc && zCap[i]; i++){
    switch( zCap[i] ){
      case 'a':  rc = g.okAdmin;     break;
      case 'b':  rc = g.okAttach;    break;
      case 'c':  rc = g.okApndTkt;   break;
      case 'a':  rc = p->Admin;     break;
      case 'b':  rc = p->Attach;    break;
      case 'c':  rc = p->ApndTkt;   break;
      case 'd':  rc = g.okDelete;    break;
      case 'e':  rc = g.okRdAddr;    break;
      case 'f':  rc = g.okNewWiki;   break;
      case 'g':  rc = g.okClone;     break;
      case 'h':  rc = g.okHistory;   break;
      case 'i':  rc = g.okWrite;     break;
      case 'j':  rc = g.okRdWiki;    break;
      case 'k':  rc = g.okWrWiki;    break;
      /* case 'l': */
      case 'm':  rc = g.okApndWiki;  break;
      case 'n':  rc = g.okNewTkt;    break;
      case 'o':  rc = g.okRead;      break;
      case 'p':  rc = g.okPassword;  break;
      /* case 'q': */
      case 'r':  rc = g.okRdTkt;     break;
      case 's':  rc = g.okSetup;     break;
      case 't':  rc = g.okTktFmt;    break;
      /* d unused: see comment in capabilities.c */
      case 'e':  rc = p->RdAddr;    break;
      case 'f':  rc = p->NewWiki;   break;
      case 'g':  rc = p->Clone;     break;
      case 'h':  rc = p->Hyperlink; break;
      case 'i':  rc = p->Write;     break;
      case 'j':  rc = p->RdWiki;    break;
      case 'k':  rc = p->WrWiki;    break;
      case 'l':  rc = p->ModWiki;   break;
      case 'm':  rc = p->ApndWiki;  break;
      case 'n':  rc = p->NewTkt;    break;
      case 'o':  rc = p->Read;      break;
      case 'p':  rc = p->Password;  break;
      case 'q':  rc = p->ModTkt;    break;
      case 'r':  rc = p->RdTkt;     break;
      case 's':  rc = p->Setup;     break;
      case 't':  rc = p->TktFmt;    break;
      /* case 'u': READER    */
      /* case 'v': DEVELOPER */
      case 'w':  rc = g.okWrTkt;     break;
      /* case 'x': */
      /* case 'y': */
      case 'z':  rc = g.okZip;       break;
      default:   rc = 0;             break;
      case 'w':  rc = p->WrTkt;     break;
      case 'x':  rc = p->Private;   break;
      case 'y':  rc = p->WrUnver;   break;
      case 'z':  rc = p->Zip;       break;
      case '2':  rc = p->RdForum;   break;
      case '3':  rc = p->WrForum;   break;
      case '4':  rc = p->WrTForum;  break;
      case '5':  rc = p->ModForum;  break;
      case '6':  rc = p->AdminForum;break;
      case '7':  rc = p->EmailAlert;break;
      case 'A':  rc = p->Announce;  break;
      case 'C':  rc = p->Chat;      break;
      case 'D':  rc = p->Debug;     break;
      case 'L':  rc = g.zLogin && *g.zLogin; break;
      /* Mainenance reminder: '@' should not be used because
         it would semantically collide with the @ in the
         capexpr TH1 command. */
      default:   rc = 0;            break;
    }
  }
  return rc;
}

/*
** Change the login to zUser.
*/
void login_as_user(const char *zUser){
  char *zCap = "";   /* New capabilities */

  /* Turn off all capabilities from prior logins */
  memset( &g.perm, 0, sizeof(g.perm) );

  /* Set the global variables recording the userid and login.  The
  ** "nobody" user is a special case in that g.zLogin==0.
  */
  g.userUid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zUser);
  if( g.userUid==0 ){
    zUser = 0;
    g.userUid = db_int(0, "SELECT uid FROM user WHERE login='nobody'");
  }
  if( g.userUid ){
    zCap = db_text("", "SELECT cap FROM user WHERE uid=%d", g.userUid);
  }
  if( fossil_strcmp(zUser,"nobody")==0 ) zUser = 0;
  g.zLogin = fossil_strdup(zUser);

  /* Set the capabilities */
  login_set_capabilities(zCap, 0);
  login_anon_once = 1;
  login_set_anon_nobody_capabilities();
}

/*
** Return true if the user is "nobody"
*/
int login_is_nobody(void){
  return g.zLogin==0 || g.zLogin[0]==0 || fossil_strcmp(g.zLogin,"nobody")==0;
}

/*
** Return true if the user is a specific individual, not "nobody" or
** "anonymous".
*/
int login_is_individual(void){
  return g.zLogin!=0 && g.zLogin[0]!=0 && fossil_strcmp(g.zLogin,"nobody")!=0
           && fossil_strcmp(g.zLogin,"anonymous")!=0;
}

/*
** Return the login name.  If no login name is specified, return "nobody".
*/
const char *login_name(void){
  return (g.zLogin && g.zLogin[0]) ? g.zLogin : "nobody";
}

/*
** Call this routine when the credential check fails.  It causes
** a redirect to the "login" page.
*/
void login_needed(void){
  const char *zUrl = PD("REQUEST_URI", "index");
  cgi_redirect(mprintf("login?g=%T", zUrl));
  /* NOTREACHED */
  assert(0);
}

void login_needed(int anonOk){
#ifdef FOSSIL_ENABLE_JSON
  if(g.json.isJsonMode){
    json_err( FSL_JSON_E_DENIED, NULL, 1 );
    fossil_exit(0);
    /* NOTREACHED */
    assert(0);
  }else
#endif /* FOSSIL_ENABLE_JSON */
  {
    const char *zQS = P("QUERY_STRING");
    const char *zPathInfo = PD("PATH_INFO","");
    Blob redir;
    blob_init(&redir, 0, 0);
    if( zPathInfo[0]=='/' ) zPathInfo++; /* skip leading slash */
    if( fossil_wants_https(1) ){
      blob_appendf(&redir, "%s/login?g=%T", g.zHttpsURL, zPathInfo);
    }else{
      blob_appendf(&redir, "%R/login?g=%T", zPathInfo);
    }
    if( zQS && zQS[0] ){
      blob_appendf(&redir, "%%3f%T", zQS);
    }
    if( anonOk ) blob_append(&redir, "&anon", 5);
    cgi_redirect(blob_str(&redir));
    /* NOTREACHED */
    assert(0);
  }
}

/*
** Call this routine if the user lacks okHistory permission.  If
** the anonymous user has okHistory permission, then paint a mesage
** Call this routine if the user lacks g.perm.Hyperlink permission.  If
** the anonymous user has Hyperlink permission, then paint a mesage
** to inform the user that much more information is available by
** logging in as anonymous.
*/
void login_anonymous_available(void){
  if( !g.okHistory &&
  if( !g.perm.Hyperlink && g.anon.Hyperlink ){
      db_exists("SELECT 1 FROM user"
                " WHERE login='anonymous'"
                "   AND cap LIKE '%%h%%'") ){
    const char *zUrl = PD("REQUEST_URI", "index");
    @ <p>Many <font color="red">hyperlinks are disabled.</font><br />
    @ Use <a href="%s(g.zTop)/login?anon=1&g=%T(zUrl)">anonymous login</a>
    const char *zUrl = PD("PATH_INFO", "");
    @ <p>Many <span class="disabled">hyperlinks are disabled.</span><br>
    @ Use <a href="%R/login?anon=1&amp;g=%T(zUrl)">anonymous login</a>
    @ to enable hyperlinks.</p>
  }
}

/*
** While rendering a form, call this routine to add the Anti-CSRF token
** as a hidden element of the form.
*/
void login_insert_csrf_secret(void){
  @ <input type="hidden" name="csrf" value="%s(g.zCsrfToken)">
}

/*
** Check to see if the candidate username zUserID is already used.
** Return 1 if it is already in use.  Return 0 if the name is
** available for a self-registeration.
*/
static int login_self_choosen_userid_already_exists(const char *zUserID){
  int rc = db_exists(
    "SELECT 1 FROM user WHERE login=%Q "
    "UNION ALL "
    "SELECT 1 FROM event WHERE user=%Q OR euser=%Q",
    zUserID, zUserID, zUserID
  );
  return rc;
}
** Before using the results of a form, first call this routine to verify
** that ths Anti-CSRF token is present and is valid.  If the Anti-CSRF token
** is missing or is incorrect, that indicates a cross-site scripting attach
** so emits an error message and abort.

/*
** zEMail is an email address.  (Example:  "xyz@gmail.com".)  This routine
** searches for a user or subscriber that has that email address.  If the
** email address is used no-where in the system, return 0.  If the email
** address is assigned to a particular user return the UID for that user.
** If the email address is used, but not by a particular user, return -1.
*/
static int email_address_in_use(const char *zEMail){
  int uid;
  uid = db_int(0,
    "SELECT uid FROM user"
    " WHERE info LIKE '%%<%q>%%'", zEMail);
  if( uid>0 ){
    if( db_exists("SELECT 1 FROM user WHERE uid=%d AND ("
                  "   cap GLOB '*[as]*' OR"
                  "   find_emailaddr(info)<>%Q COLLATE nocase)",
                  uid, zEMail) ){
      uid = -1;
    }
  }
  if( uid==0 && alert_tables_exist() ){
    uid = db_int(0,
      "SELECT user.uid FROM subscriber JOIN user ON login=suname"
      " WHERE semail=%Q AND sverified", zEMail);
    if( uid ){
      if( db_exists("SELECT 1 FROM user WHERE uid=%d AND "
                    "   cap GLOB '*[as]*'",
                    uid) ){
        uid = -1;
      }
    }
  }
  return uid;
}

/*
** COMMAND: test-email-used
** Usage:  fossil test-email-used EMAIL ...
**
** Given a list of email addresses, show the UID and LOGIN associated
** with each one.
*/
void test_email_used(void){
  int i;
  db_find_and_open_repository(0, 0);
  verify_all_options();
  if( g.argc<3 ){
    usage("EMAIL ...");
  }
  for(i=2; i<g.argc; i++){
    const char *zEMail = g.argv[i];
    int uid = email_address_in_use(zEMail);
    if( uid==0 ){
      fossil_print("%s:  not used\n", zEMail);
    }else if( uid<0 ){
      fossil_print("%s:  used but no password reset is available\n", zEMail);
    }else{
      char *zLogin = db_text(0, "SELECT login FROM user WHERE uid=%d", uid);
      fossil_print("%s:  UID %d (%s)\n", zEMail, uid, zLogin);
      fossil_free(zLogin);
    }
  }
}


/*
** Check an email address and confirm that it is valid for self-registration.
** The email address is known already to be well-formed.  Return true
** if the email address is on the allowed list.
**
** The default behavior is that any valid email address is accepted.
** But if the "auth-sub-email" setting exists and is not empty, then
** it is a comma-separated list of GLOB patterns for email addresses
** that are authorized to self-register.
*/
int authorized_subscription_email(const char *zEAddr){
  char *zGlob = db_get("auth-sub-email",0);
  char *zAddr;
  int rc;

  if( zGlob==0 || zGlob[0]==0 ) return 1;
  zGlob = fossil_strtolwr(fossil_strdup(zGlob));
  zAddr = fossil_strtolwr(fossil_strdup(zEAddr));
  rc = glob_multi_match(zGlob, zAddr);
  fossil_free(zGlob);
  fossil_free(zAddr);
  return rc!=0;
}

/*
** WEBPAGE: register
**
** Page to allow users to self-register.  The "self-register" setting
** must be enabled for this page to operate.
*/
void register_page(void){
  const char *zUserID, *zPasswd, *zConfirm, *zEAddr;
  const char *zDName;
  unsigned int uSeed;
  const char *zDecoded;
  int iErrLine = -1;
  const char *zErr = 0;
  int uid = 0;              /* User id with the same email */
  int captchaIsCorrect = 0; /* True on a correct captcha */
  char *zCaptcha = "";      /* Value of the captcha text */
  char *zPerms;             /* Permissions for the default user */
  int canDoAlerts = 0;      /* True if receiving email alerts is possible */
  int doAlerts = 0;         /* True if subscription is wanted too */

  if( !db_get_boolean("self-register", 0) ){
    style_header("Registration not possible");
    @ <p>This project does not allow user self-registration. Please contact the
    @ project administrator to obtain an account.</p>
    style_finish_page();
    return;
  }
  if( P("pwreset")!=0 && login_self_password_reset_available() ){
    /* The "Request Password Reset" button was pressed, so render the
    ** "Request Password Reset" page instead of this one. */
    login_reqpwreset_page();
    return;
  }
  zPerms = db_get("default-perms", "u");
  login_check_credentials();

  /* Prompt the user for email alerts if this repository is configured for
  ** email alerts and if the default permissions include "7" */
  canDoAlerts = alert_tables_exist() && (db_int(0,
    "SELECT fullcap(%Q) GLOB '*7*'", zPerms
  ) || db_get_boolean("selfreg-verify",0));
  doAlerts = canDoAlerts && atoi(PD("alerts","1"))!=0;

  zUserID = PDT("u","");
  zPasswd = PDT("p","");
  zConfirm = PDT("cp","");
  zEAddr = PDT("ea","");
  zDName = PDT("dn","");

  /* Verify user imputs */
  if( P("new")==0 || !cgi_csrf_safe(2) ){
    /* This is not a valid form submission.  Fall through into
    ** the form display */
  }else if( (captchaIsCorrect = captcha_is_correct(1))==0 ){
    iErrLine = 6;
    zErr = "Incorrect CAPTCHA";
  }else if( strlen(zUserID)<6 ){
    iErrLine = 1;
    zErr = "User ID too short. Must be at least 6 characters.";
  }else if( sqlite3_strglob("*[^-a-zA-Z0-9_.]*",zUserID)==0 ){
    iErrLine = 1;
    zErr = "User ID may not contain spaces or special characters.";
  }else if( sqlite3_strlike("anonymous%", zUserID, 0)==0
         || sqlite3_strlike("nobody%", zUserID, 0)==0
         || sqlite3_strlike("reader%", zUserID, 0)==0
         || sqlite3_strlike("developer%", zUserID, 0)==0
  ){
    iErrLine = 1;
    zErr = "This User ID is reserved. Choose something different.";
  }else if( zDName[0]==0 ){
    iErrLine = 2;
    zErr = "Required";
  }else if( zEAddr[0]==0 ){
    iErrLine = 3;
    zErr = "Required";
  }else if( email_address_is_valid(zEAddr,0)==0 ){
    iErrLine = 3;
    zErr = "Not a valid email address";
  }else if( authorized_subscription_email(zEAddr)==0 ){
    iErrLine = 3;
    zErr = "Not an authorized email address";
  }else if( strlen(zPasswd)<6 ){
    iErrLine = 4;
    zErr = "Password must be at least 6 characters long";
  }else if( fossil_strcmp(zPasswd,zConfirm)!=0 ){
    iErrLine = 5;
    zErr = "Passwords do not match";
  }else if( (uid = email_address_in_use(zEAddr))!=0 ){
    iErrLine = 3;
    zErr = "This email address is already associated with a user";
  }else if( login_self_choosen_userid_already_exists(zUserID) ){
    iErrLine = 1;
    zErr = "This User ID is already taken. Choose something different.";
  }else{
    /* If all of the tests above have passed, that means that the submitted
    ** form contains valid data and we can proceed to create the new login */
    Blob sql;
    int uid;
    char *zPass = sha1_shared_secret(zPasswd, zUserID, 0);
    const char *zStartPerms = zPerms;
    if( db_get_boolean("selfreg-verify",0) ){
      /* If email verification is required for self-registration, initalize
      ** the new user capabilities to just "7" (Sign up for email).  The
      ** full "default-perms" permissions will be added when they click
      ** the verification link on the email they are sent. */
      zStartPerms = "7";
    }
    blob_init(&sql, 0, 0);
    blob_append_sql(&sql,
       "INSERT INTO user(login,pw,cap,info,mtime)\n"
       "VALUES(%Q,%Q,%Q,"
       "'%q <%q>\nself-register from ip %q on '||datetime('now'),now())",
       zUserID, zPass, zStartPerms, zDName, zEAddr, g.zIpAddr);
    fossil_free(zPass);
    db_unprotect(PROTECT_USER);
    db_multi_exec("%s", blob_sql_text(&sql));
    db_protect_pop();
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zUserID);
    login_set_user_cookie(zUserID, uid, NULL, 0);
    if( doAlerts ){
      /* Also make the new user a subscriber. */
      Blob hdr, body;
      AlertSender *pSender;
      const char *zCode;  /* New subscriber code (in hex) */
      const char *zGoto = P("g");
      int nsub = 0;
      char ssub[20];
      CapabilityString *pCap;
      pCap = capability_add(0, zPerms);
      capability_expand(pCap);
      ssub[nsub++] = 'a';
      if( capability_has_any(pCap,"o") ) ssub[nsub++] = 'c';
      if( capability_has_any(pCap,"2") ) ssub[nsub++] = 'f';
      if( capability_has_any(pCap,"r") ) ssub[nsub++] = 't';
      if( capability_has_any(pCap,"j") ) ssub[nsub++] = 'w';
      ssub[nsub] = 0;
      capability_free(pCap);
      /* Also add the user to the subscriber table. */
      zCode = db_text(0,
        "INSERT INTO subscriber(semail,suname,"
        "  sverified,sdonotcall,sdigest,ssub,sctime,mtime,smip,lastContact)"
        " VALUES(%Q,%Q,%d,0,%d,%Q,now(),now(),%Q,now()/86400)"
        " ON CONFLICT(semail) DO UPDATE"
        "   SET suname=excluded.suname"
        " RETURNING hex(subscriberCode);",
        /* semail */    zEAddr,
        /* suname */    zUserID,
        /* sverified */ 0,
        /* sdigest */   0,
        /* ssub */      ssub,
        /* smip */      g.zIpAddr
      );
      if( db_exists("SELECT 1 FROM subscriber WHERE semail=%Q"
                    "  AND sverified", zEAddr) ){
        /* This the case where the user was formerly a verified subscriber
        ** and here they have also registered as a user as well.  It is
        ** not necessary to repeat the verfication step */
        login_redirect_to_g();
      }
      /* A verification email */
      pSender = alert_sender_new(0,0);
      blob_init(&hdr,0,0);
      blob_init(&body,0,0);
      blob_appendf(&hdr, "To: <%s>\n", zEAddr);
      blob_appendf(&hdr, "Subject: Subscription verification\n");
      alert_append_confirmation_message(&body, zCode);
      alert_send(pSender, &hdr, &body, 0);
      style_header("Email Verification");
      if( pSender->zErr ){
        @ <h1>Internal Error</h1>
        @ <p>The following internal error was encountered while trying
        @ to send the confirmation email:
        @ <blockquote><pre>
        @ %h(pSender->zErr)
        @ </pre></blockquote>
      }else{
        @ <p>An email has been sent to "%h(zEAddr)". That email contains a
        @ hyperlink that you must click to activate your account.</p>
      }
      alert_sender_free(pSender);
      if( zGoto ){
        @ <p><a href='%h(zGoto)'>Continue</a>
      }
      style_finish_page();
      return;
    }
    login_redirect_to_g();
  }

  /* Prepare the captcha. */
  if( captchaIsCorrect ){
    uSeed = strtoul(P("captchaseed"),0,10);
  }else{
    uSeed = captcha_seed();
  }
  zDecoded = captcha_decode(uSeed, 0);
  zCaptcha = captcha_render(zDecoded);

  style_header("Register");
  /* Print out the registration form. */
  g.perm.Hyperlink = 1;  /* Artificially enable hyperlinks */
  form_begin(0, "%R/register");
  if( P("g") ){
    @ <input type="hidden" name="g" value="%h(P("g"))">
  }
  @ <p><input type="hidden" name="captchaseed" value="%u(uSeed)">
  @ <table class="login_out">
  @ <tr>
  @   <td class="form_label" align="right" id="uid">User ID:</td>
  @   <td><input aria-labelledby="uid" type="text" name="u" \
  @ value="%h(zUserID)" size="30" autofocus></td>
  @
  if( iErrLine==1 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr>
  @   <td class="form_label" align="right" id="dpyname">Display Name:</td>
  @   <td><input aria-labelledby="dpyname" type="text" name="dn" \
  @ value="%h(zDName)" size="30"></td>
  @ </tr>
  if( iErrLine==2 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ </tr>
  @ <tr>
  @   <td class="form_label" align="right" id="emaddr">Email Address:</td>
  @   <td><input aria-labelledby="emaddr" type="text" name="ea" \
  @ value="%h(zEAddr)" size="30"></td>
  @ </tr>
  if( iErrLine==3 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span>
    if( uid>0 && login_self_password_reset_available() ){
      @ <br>
      @ <input type="submit" name="pwreset" \
      @ value="Request Password Reset For %h(zEAddr)">
    }
    @ </td></tr>
  }
  if( canDoAlerts ){
    int a = atoi(PD("alerts","1"));
    @ <tr>
    @   <td class="form_label" align="right" id="emalrt">Email&nbsp;Alerts?</td>
    @   <td><select aria-labelledby="emalrt" size='1' name='alerts'>
    @       <option value="1" %s(a?"selected":"")>Yes</option>
    @       <option value="0" %s(!a?"selected":"")>No</option>
    @   </select></td></tr>
  }
  @ <tr>
  @   <td class="form_label" align="right" id="pswd">Password:</td>
  @   <td><input aria-labelledby="pswd" type="password" name="p" \
  @ value="%h(zPasswd)" size="30"> \
  if( zPasswd[0]==0 ){
    char *zRPW = fossil_random_password(12);
    @ Password suggestion: %z(zRPW)</td>
  }else{
    @ </td>
  }
  @ <tr>
  if( iErrLine==4 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr>
  @   <td class="form_label" align="right" id="pwcfrm">Confirm:</td>
  @   <td><input aria-labelledby="pwcfrm" type="password" name="cp" \
  @ value="%h(zConfirm)" size="30"></td>
  @ </tr>
  if( iErrLine==5 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr>
  @   <td class="form_label" align="right" id="cptcha">Captcha:</td>
  @   <td><input type="text" name="captcha" aria-labelledby="cptcha" \
  @ value="%h(captchaIsCorrect?zDecoded:"")" size="30">
  captcha_speakit_button(uSeed, "Speak the captcha text");
  @   </td>
  @ </tr>
  if( iErrLine==6 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr><td></td>
  @ <td><input type="submit" name="new" value="Register"></td></tr>
  @ </table>
  @ <div class="captcha"><table class="captcha"><tr><td><pre class="captcha">
  @ %h(zCaptcha)
  @ </pre>
  @ Enter this 8-letter code in the "Captcha" box above.
  @ </td></tr></table></div>
  @ </form>
  style_finish_page();

  free(zCaptcha);
}

/*
** WEBPAGE: reqpwreset
**
** A web page to request a password reset.
**
** A form is presented where the user can enter their email address
** and a captcha.  If the email address entered corresponds to a known
** users, an email is sent to that address that contains a link to the
** /resetpw page that allows the users to enter a new password.
**
** This page is only available if the self-pw-reset property is enabled
** and email notifications are configured and operating.  Password resets
** are not available to users with Admin or Setup privilege.
*/
void login_reqpwreset_page(void){
  const char *zEAddr;
  const char *zDecoded;
  unsigned int uSeed;
  int iErrLine = -1;
  const char *zErr = 0;
  int uid = 0;              /* User id with the email zEAddr */
  int captchaIsCorrect = 0; /* True on a correct captcha */
  char *zCaptcha = "";      /* Value of the captcha text */

  if( !login_self_password_reset_available() ){
    style_header("Password reset not possible");
    @ <p>This project does not allow users to reset their own passwords.
    @ If you need a password reset, you will have to negotiate that directly
    @ with the project administrator.
    style_finish_page();
    return;
  }
  zEAddr = PDT("ea","");

  /* Verify user imputs */
  if( !cgi_csrf_safe(1) || P("reqpwreset")==0 ){
    /* This is the initial display of the form.  No processing or error
    ** checking is to be done. Fall through into the form display
    **
    ** cgi_csrf_safe():  Nothing interesting happens on this page without
    ** a valid captcha solution, so we only need to check referrer and that
    ** the request is a POST.
    */
  }else if( (captchaIsCorrect = captcha_is_correct(1))==0 ){
    iErrLine = 2;
    zErr = "Incorrect CAPTCHA";
  }else if( zEAddr[0]==0 ){
    iErrLine = 1;
    zErr = "Required";
  }else if( email_address_is_valid(zEAddr,0)==0 ){
    iErrLine = 1;
    zErr = "Not a valid email address";
  }else if( authorized_subscription_email(zEAddr)==0 ){
    iErrLine = 1;
    zErr = "Not an authorized email address";
  }else if( (uid = email_address_in_use(zEAddr))<=0 ){
    iErrLine = 1;
    zErr = "This email address is not associated with a user who has "
           "password reset privileges.";
  }else if( login_set_uid(uid,0)==0 || g.perm.Admin || g.perm.Setup
            || !g.perm.Password ){
    iErrLine = 1;
    zErr = "This email address is not associated with a user who has "
           "password reset privileges.";
  }else{

    /* If all of the tests above have passed, that means that the submitted
    ** form contains valid data and we can proceed to issue the password
    ** reset email. */
    Blob hdr, body;
    AlertSender *pSender;
    char *zUrl = login_resetpw_suffix(uid, 0);
    pSender = alert_sender_new(0,0);
    blob_init(&hdr,0,0);
    blob_init(&body,0,0);
    blob_appendf(&hdr, "To: <%s>\n", zEAddr);
    blob_appendf(&hdr, "Subject: Password reset for %s\n", g.zBaseURL);
    blob_appendf(&body,
      "Someone has requested to reset the password for user \"%s\"\n",
      g.zLogin);
    blob_appendf(&body, "at %s.\n\n", g.zBaseURL);
    blob_appendf(&body,
       "If you did not request this password reset, ignore\n"
       "this email\n\n");
    blob_appendf(&body,
       "To reset the password, visit the following link:\n\n"
       "    %s/resetpw/%s\n\n", g.zBaseURL, zUrl);
    fossil_free(zUrl);
    alert_send(pSender, &hdr, &body, 0);
    style_header("Email Verification");
    if( pSender->zErr ){
      @ <h1>Internal Error</h1>
      @ <p>The following internal error was encountered while trying
      @ to send the confirmation email:
      @ <blockquote><pre>
      @ %h(pSender->zErr)
      @ </pre></blockquote>
    }else{
      @ <p>An email containing a hyperlink that can be used to reset
      @ your password has been sent to "%h(zEAddr)".</p>
    }
    alert_sender_free(pSender);
    style_finish_page();
    return;
  }

  /* Prepare the captcha. */
  if( captchaIsCorrect ){
    uSeed = strtoul(P("captchaseed"),0,10);
  }else{
    uSeed = captcha_seed();
  }
  zDecoded = captcha_decode(uSeed, 0);
  zCaptcha = captcha_render(zDecoded);

  style_header("Request Password Reset");
  /* Print out the registration form. */
  g.perm.Hyperlink = 1;  /* Artificially enable hyperlinks */
  form_begin(0, "%R/reqpwreset");
  @ <p><input type="hidden" name="captchaseed" value="%u(uSeed)">
  @ <p><input type="hidden" name="reqpwreset" value="1">
  @ <table class="login_out">
  @ <tr>
  @   <td class="form_label" align="right" id="emaddr">Email Address:</td>
  @   <td><input aria-labelledby="emaddr" type="text" name="ea" \
  @ value="%h(zEAddr)" size="30"></td>
  @ </tr>
  if( iErrLine==1 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr>
  @   <td class="form_label" align="right" id="cptcha">Captcha:</td>
  @   <td><input type="text" name="captcha" aria-labelledby="cptcha" \
  @ value="%h(captchaIsCorrect?zDecoded:"")" size="30">
  captcha_speakit_button(uSeed, "Speak the captcha text");
  @   </td>
  @ </tr>
  if( iErrLine==2 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr><td></td>
  @ <td><input type="submit" name="new" value="Request Password Reset"/>\
  @ </td></tr>
  @ </table>
  @ <div class="captcha"><table class="captcha"><tr><td><pre class="captcha">
  @ %h(zCaptcha)
  @ </pre>
  @ Enter this 8-letter code in the "Captcha" box above.
  @ </td></tr></table></div>
  @ </form>
  style_finish_page();
  free(zCaptcha);
}

/*
** Run SQL on the repository database for every repository in our
** login group.  The SQL is run in a separate database connection.
**
** Any members of the login group whose repository database file
** cannot be found is silently removed from the group.
**
** Error messages accumulate and are returned in *pzErrorMsg.  The
** memory used to hold these messages should be freed using
** fossil_free() if one desired to avoid a memory leak.  The
** zPrefix and zSuffix strings surround each error message.
**
** Return the number of errors.
*/
int login_group_sql(
  const char *zSql,        /* The SQL to run */
  const char *zPrefix,     /* Prefix to each error message */
  const char *zSuffix,     /* Suffix to each error message */
  char **pzErrorMsg        /* Write error message here, if not NULL */
){
  sqlite3 *pPeer;          /* Connection to another database */
  int nErr = 0;            /* Number of errors seen so far */
  int rc;                  /* Result code from subroutine calls */
  char *zErr;              /* SQLite error text */
  char *zSelfCode;         /* Project code for ourself */
  Blob err;                /* Accumulate errors here */
  Stmt q;                  /* Query of all peer-* entries in CONFIG */

  if( zPrefix==0 ) zPrefix = "";
  if( zSuffix==0 ) zSuffix = "";
  if( pzErrorMsg ) *pzErrorMsg = 0;
  zSelfCode = abbreviated_project_code(db_get("project-code", "x"));
  blob_zero(&err);
  db_prepare(&q,
    "SELECT name, value FROM config"
    " WHERE name GLOB 'peer-repo-*'"
    "   AND name <> 'peer-repo-%q'"
    " ORDER BY +value",
    zSelfCode
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zRepoName = db_column_text(&q, 1);
    if( file_size(zRepoName, ExtFILE)<0 ){
      /* Silently remove non-existent repositories from the login group. */
      const char *zLabel = db_column_text(&q, 0);
      db_unprotect(PROTECT_CONFIG);
      db_multi_exec(
         "DELETE FROM config WHERE name GLOB 'peer-*-%q'",
         &zLabel[10]
      );
      db_protect_pop();
      continue;
    }
    rc = sqlite3_open_v2(
         zRepoName, &pPeer,
         SQLITE_OPEN_READWRITE,
         g.zVfsName
    );
    if( rc!=SQLITE_OK ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName,
                   sqlite3_errmsg(pPeer), zSuffix);
      nErr++;
      sqlite3_close(pPeer);
      continue;
    }
    sqlite3_create_function(pPeer, "shared_secret", 3, SQLITE_UTF8,
                            0, sha1_shared_secret_sql_function, 0, 0);
    sqlite3_create_function(pPeer, "now", 0,SQLITE_UTF8,0,db_now_function,0,0);
    sqlite3_busy_timeout(pPeer, 5000);
    zErr = 0;
    rc = sqlite3_exec(pPeer, zSql, 0, 0, &zErr);
    if( zErr ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName, zErr, zSuffix);
      sqlite3_free(zErr);
      nErr++;
    }else if( rc!=SQLITE_OK ){
      blob_appendf(&err, "%s%s: %s%s", zPrefix, zRepoName,
                   sqlite3_errmsg(pPeer), zSuffix);
      nErr++;
    }
    sqlite3_close(pPeer);
  }
  db_finalize(&q);
  if( pzErrorMsg && blob_size(&err)>0 ){
    *pzErrorMsg = fossil_strdup(blob_str(&err));
  }
  blob_reset(&err);
  fossil_free(zSelfCode);
  return nErr;
}

/*
** Attempt to join a login-group.
**
** If problems arise, leave an error message in *pzErrMsg.
*/
void login_group_join(
  const char *zRepo,         /* Repository file in the login group */
  int bPwRequired,           /* True if the login,password is required */
  const char *zLogin,        /* Login name for the other repo */
  const char *zPassword,     /* Password to prove we are authorized to join */
  const char *zNewName,      /* Name of new login group if making a new one */
  char **pzErrMsg            /* Leave an error message here */
){
  Blob fullName;             /* Blob for finding full pathnames */
  sqlite3 *pOther;           /* The other repository */
  int rc;                    /* Return code from sqlite3 functions */
  char *zOtherProjCode;      /* Project code for pOther */
  char *zSelfRepo;           /* Name of our repository */
  char *zSelfLabel;          /* Project-name for our repository */
  char *zSelfProjCode;       /* Our project-code */
  char *zSql;                /* SQL to run on all peers */
  const char *zSelf;         /* The ATTACH name of our repository */

  *pzErrMsg = 0;   /* Default to no errors */
  zSelf = "repository";

  /* Get the full pathname of the other repository */
  file_canonical_name(zRepo, &fullName, 0);
  zRepo = fossil_strdup(blob_str(&fullName));
  blob_reset(&fullName);

  /* Get the full pathname for our repository.  Also the project code
  ** and project name for ourself. */
  file_canonical_name(g.zRepositoryName, &fullName, 0);
  zSelfRepo = fossil_strdup(blob_str(&fullName));
  blob_reset(&fullName);
  zSelfProjCode = db_get("project-code", "unknown");
  zSelfLabel = db_get("project-name", 0);
  if( zSelfLabel==0 ){
    zSelfLabel = zSelfProjCode;
  }

  /* Make sure we are not trying to join ourselves */
  if( fossil_strcmp(zRepo, zSelfRepo)==0 ){
    *pzErrMsg = mprintf("The \"other\" repository is the same as this one.");
    return;
  }

  /* Make sure the other repository is a valid Fossil database */
  if( file_size(zRepo, ExtFILE)<0 ){
    *pzErrMsg = mprintf("repository file \"%s\" does not exist", zRepo);
    return;
  }
  rc = sqlite3_open_v2(
       zRepo, &pOther,
       SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
       g.zVfsName
  );
  if( rc!=SQLITE_OK ){
    *pzErrMsg = fossil_strdup(sqlite3_errmsg(pOther));
  }else{
    rc = sqlite3_exec(pOther, "SELECT count(*) FROM user", 0, 0, pzErrMsg);
  }
  sqlite3_close(pOther);
  if( rc ) return;

  /* Attach the other repository.  Make sure the username/password is
  ** valid and has Setup permission.
  */
  db_attach(zRepo, "other");
  zOtherProjCode = db_text("x", "SELECT value FROM other.config"
                                " WHERE name='project-code'");
  if( bPwRequired ){
    char *zPwHash;             /* Password hash on pOther */
    zPwHash = sha1_shared_secret(zPassword, zLogin, zOtherProjCode);
    if( !db_exists(
      "SELECT 1 FROM other.user"
      " WHERE login=%Q AND cap GLOB '*s*'"
      "   AND (pw=%Q OR pw=%Q)",
      zLogin, zPassword, zPwHash)
    ){
      db_detach("other");
      *pzErrMsg = "The supplied username/password does not correspond to a"
                  " user Setup permission on the other repository.";
      return;
    }
  }

  /* Create all the necessary CONFIG table entries on both the
  ** other repository and on our own repository.
  */
  zSelfProjCode = abbreviated_project_code(zSelfProjCode);
  zOtherProjCode = abbreviated_project_code(zOtherProjCode);
  db_begin_transaction();
  db_unprotect(PROTECT_CONFIG);
  db_multi_exec(
    "DELETE FROM \"%w\".config WHERE name GLOB 'peer-*';"
    "INSERT INTO \"%w\".config(name,value) VALUES('peer-repo-%q',%Q);"
    "INSERT INTO \"%w\".config(name,value) "
    "  SELECT 'peer-name-%q', value FROM other.config"
    "   WHERE name='project-name';",
    zSelf,
    zSelf, zOtherProjCode, zRepo,
    zSelf, zOtherProjCode
  );
  db_multi_exec(
    "INSERT OR IGNORE INTO other.config(name,value)"
    " VALUES('login-group-name',%Q);"
    "INSERT OR IGNORE INTO other.config(name,value)"
    " VALUES('login-group-code',lower(hex(randomblob(8))));",
    zNewName
  );
  db_multi_exec(
    "REPLACE INTO \"%w\".config(name,value)"
    "  SELECT name, value FROM other.config"
    "   WHERE name GLOB 'peer-*' OR name GLOB 'login-group-*'",
    zSelf
  );
  db_protect_pop();
  db_end_transaction(0);
  db_multi_exec("DETACH other");

  /* Propagate the changes to all other members of the login-group */
  zSql = mprintf(
    "BEGIN;"
    "REPLACE INTO config(name,value,mtime) VALUES('peer-name-%q',%Q,now());"
    "REPLACE INTO config(name,value,mtime) VALUES('peer-repo-%q',%Q,now());"
    "COMMIT;",
    zSelfProjCode, zSelfLabel, zSelfProjCode, zSelfRepo
  );
  db_unprotect(PROTECT_CONFIG);
  login_group_sql(zSql, "<li> ", "</li>", pzErrMsg);
  db_protect_pop();
  fossil_free(zSql);
}

/*
** Leave the login group that we are currently part of.
*/
void login_group_leave(char **pzErrMsg){
  char *zProjCode;
  char *zSql;

  *pzErrMsg = 0;
  zProjCode = abbreviated_project_code(db_get("project-code","x"));
  zSql = mprintf(
    "DELETE FROM config WHERE name GLOB 'peer-*-%q';"
    "DELETE FROM config"
    " WHERE name='login-group-name'"
    "   AND (SELECT count(*) FROM config WHERE name GLOB 'peer-*')==0;",
    zProjCode
  );
  fossil_free(zProjCode);
  db_unprotect(PROTECT_CONFIG);
  login_group_sql(zSql, "<li> ", "</li>", pzErrMsg);
  fossil_free(zSql);
  db_multi_exec(
    "DELETE FROM config "
    " WHERE name GLOB 'peer-*'"
    "    OR name GLOB 'login-group-*';"
  );
  db_protect_pop();
}

/*
** COMMAND: login-group*
**
** Usage: %fossil login-group ?SUBCOMMAND? ?OPTIONS?
**
** Run various subcommands to manage login-group related settings of the open
** repository or of the repository identified by the -R or --repository option.
**
** >  fossil login-group ?-R REPO?
**
**     Show the login-group to which REPO, or if invoked from within a check-out
**     the repository on which the current check-out is based, belongs.
**
** >  fossil login-group join ?-R REPO? ?--name NAME? REPO2
**
**     This command will either: (1) add the repository on which the current
**     check-out is based, or the repository REPO specified with -R, to the
**     login group where REPO2 is a member, in which case the optional --name
**     argument is not required; or (2) create a new login group between the
**     repository on which the current check-out is based, or the repository
**     REPO specified with -R, and REPO2, in which case the new group NAME is
**     determined by the mandatory --name option. In both cases, the specified
**     repositories will first leave any group in which they are currently a
**     member before joining the new login group.
**
** >  fossil login-group leave ?-R REPO?
**
**     Take the repository REPO, or if invoked from within a check-out the
**     repository on which the current check-out is based, out of whatever
**     login group it is a member.
**
** About Login Groups:
**
** A login-group is a set of repositories that share user credentials.
** If a user is logged into one member of the group, then that user can
** access any other group member as long as they have an entry in the USER
** table of that member.  If a user changes their password using web
** interface, their password is also automatically changed in every other
** member of the login group.
*/
void login_verify_csrf_secret(void){
  const char *zCsrf;            /* The CSRF secret */
  if( g.okCsrf ) return;
  if( (zCsrf = P("csrf"))!=0 && strcmp(zCsrf, g.zCsrfToken)==0 ){
    g.okCsrf = 1;
    return;
  }
  fossil_fatal("Cross-site request forgery attempt");
void login_group_command(void){
  const char *zLGName;
  const char *zCmd;
  int nCmd;
  Stmt q;
  db_find_and_open_repository(0, 0);
  if( g.argc>2 ){
    zCmd = g.argv[2];
    nCmd = (int)strlen(zCmd);
    if( strncmp(zCmd,"join",nCmd)==0 && nCmd>=1 ){
      const char *zNewName = find_option("name",0,1);
      const char *zOther = 0;
      char *zErr = 0;
      verify_all_options();
      if( g.argc!=4 ){
        fossil_fatal("unexpected argument count for \"login-group join\"");
      }
      zOther = g.argv[3];
      login_group_leave(&zErr);
      sqlite3_free(zErr);
      zErr = 0;
      login_group_join(zOther,0,0,0,zNewName,&zErr);
      if( zErr ){
        fossil_fatal("%s", zErr);
      }
    }else if( strncmp(zCmd,"leave",nCmd)==0 && nCmd>=1 ){
      verify_all_options();
      if( g.argc!=3 ){
        fossil_fatal("unknown extra arguments to \"login-group leave\"");
      }
      zLGName = login_group_name();
      if( zLGName ){
        char *zErr = 0;
        fossil_print("Leaving login-group \"%s\"\n", zLGName);
        login_group_leave(&zErr);
        if( zErr ) fossil_fatal("Oops: %s", zErr);
        return;
      }
    }else{
      fossil_fatal("unknown command \"%s\" - should be \"join\" or \"leave\"",
                   zCmd);
    }
  }
  /* Show the current login group information */
  zLGName = login_group_name();
  if( zLGName==0 ){
    fossil_print("Not currently a part of any login-group\n");
    return;
  }
  fossil_print("Now part of login-group \"%s\" with:\n", zLGName);
  db_prepare(&q, "SELECT value FROM config WHERE name LIKE 'peer-repo-%%'");
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("  %s\n", db_column_text(&q,0));
  }
  db_finalize(&q);

}
Added src/login.js.






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/* Javascript code to handle button actions on the login page */
var autofillButton = document.getElementById('autofillButton');
autofillButton.onclick = function(){
  document.getElementById('u').value = 'anonymous';
  document.getElementById('p').value = autofillButton.getAttribute('data-af');
};
Added src/lookslike.c.








































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2013 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to try to guess if a particular file is
** text or binary, what types of line endings it uses, is it UTF8 or
** UTF16, etc.
*/
#include "config.h"
#include "lookslike.h"
#include <assert.h>


#if INTERFACE

/*
** This macro is designed to return non-zero if the specified blob contains
** data that MAY be binary in nature; otherwise, zero will be returned.
*/
#define looks_like_binary(blob) \
    ((looks_like_utf8((blob), LOOK_BINARY) & LOOK_BINARY) != LOOK_NONE)

/*
** Output flags for the looks_like_utf8() and looks_like_utf16() routines used
** to convey status information about the blob content.
*/
#define LOOK_NONE    ((int)0x00000000) /* Nothing special was found. */
#define LOOK_NUL     ((int)0x00000001) /* One or more NUL chars were found. */
#define LOOK_CR      ((int)0x00000002) /* One or more CR chars were found. */
#define LOOK_LONE_CR ((int)0x00000004) /* An unpaired CR char was found. */
#define LOOK_LF      ((int)0x00000008) /* One or more LF chars were found. */
#define LOOK_LONE_LF ((int)0x00000010) /* An unpaired LF char was found. */
#define LOOK_CRLF    ((int)0x00000020) /* One or more CR/LF pairs were found. */
#define LOOK_LONG    ((int)0x00000040) /* An over length line was found. */
#define LOOK_ODD     ((int)0x00000080) /* An odd number of bytes was found. */
#define LOOK_SHORT   ((int)0x00000100) /* Unable to perform full check. */
#define LOOK_INVALID ((int)0x00000200) /* Invalid sequence was found. */
#define LOOK_BINARY  (LOOK_NUL | LOOK_LONG | LOOK_SHORT) /* May be binary. */
#define LOOK_EOL     (LOOK_LONE_CR | LOOK_LONE_LF | LOOK_CRLF) /* Line seps. */
#endif /* INTERFACE */

/* definitions for various UTF-8 sequence lengths, encoded as start value
 * and size of each valid range belonging to some lead byte*/
#define US2A  0x80, 0x01 /* for lead byte 0xC0 */
#define US2B  0x80, 0x40 /* for lead bytes 0xC2-0xDF */
#define US3A  0xA0, 0x20 /* for lead byte 0xE0 */
#define US3B  0x80, 0x40 /* for lead bytes 0xE1-0xEF */
#define US4A  0x90, 0x30 /* for lead byte 0xF0 */
#define US4B  0x80, 0x40 /* for lead bytes 0xF1-0xF3 */
#define US4C  0x80, 0x10 /* for lead byte 0xF4 */
#define US0A  0x00, 0x00 /* for any other lead byte */

/* a table used for quick lookup of the definition that goes with a
 * particular lead byte */
static const unsigned char lb_tab[] = {
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A,
  US2A, US0A, US2B, US2B, US2B, US2B, US2B, US2B,
  US2B, US2B, US2B, US2B, US2B, US2B, US2B, US2B,
  US2B, US2B, US2B, US2B, US2B, US2B, US2B, US2B,
  US2B, US2B, US2B, US2B, US2B, US2B, US2B, US2B,
  US3A, US3B, US3B, US3B, US3B, US3B, US3B, US3B,
  US3B, US3B, US3B, US3B, US3B, US3B, US3B, US3B,
  US4A, US4B, US4B, US4B, US4C, US0A, US0A, US0A,
  US0A, US0A, US0A, US0A, US0A, US0A, US0A, US0A
};

/*
** This function attempts to scan each logical line within the blob to
** determine the type of content it appears to contain.  The return value
** is a combination of one or more of the LOOK_XXX flags (see above):
**
** !LOOK_BINARY -- The content appears to consist entirely of text; however,
**                 the encoding may not be UTF-8.
**
** LOOK_BINARY -- The content appears to be binary because it contains one
**                or more embedded NUL characters or an extremely long line.
**                Since this function does not understand UTF-16, it may
**                falsely consider UTF-16 text to be binary.
**
** Additional flags (i.e. those other than the ones included in LOOK_BINARY)
** may be present in the result as well; however, they should not impact the
** determination of text versus binary content.
**
************************************ WARNING **********************************
**
** This function does not validate that the blob content is properly formed
** UTF-8.  It assumes that all code points are the same size.  It does not
** validate any code points.  It makes no attempt to detect if any [invalid]
** switches between UTF-8 and other encodings occur.
**
** The only code points that this function cares about are the NUL character,
** carriage-return, and line-feed.
**
** This function examines the contents of the blob until one of the flags
** specified in "stopFlags" is set.
**
************************************ WARNING **********************************
*/
int looks_like_utf8(const Blob *pContent, int stopFlags){
  const char *z = blob_buffer(pContent);
  unsigned int n = blob_size(pContent);
  int j, c, flags = LOOK_NONE;  /* Assume UTF-8 text, prove otherwise */

  if( n==0 ) return flags;  /* Empty file -> text */
  c = *z;
  if( c==0 ){
    flags |= LOOK_NUL;  /* NUL character in a file -> binary */
  }else if( c=='\r' ){
    flags |= LOOK_CR;
    if( n<=1 || z[1]!='\n' ){
      flags |= LOOK_LONE_CR;  /* Not enough chars or next char not LF */
    }
  }
  j = (c!='\n');
  if( !j ) flags |= (LOOK_LF | LOOK_LONE_LF);  /* Found LF as first char */
  while( !(flags&stopFlags) && --n>0 ){
    int c2 = c;
    c = *++z; ++j;
    if( c==0 ){
      flags |= LOOK_NUL;  /* NUL character in a file -> binary */
    }else if( c=='\n' ){
      flags |= LOOK_LF;
      if( c2=='\r' ){
        flags |= (LOOK_CR | LOOK_CRLF);  /* Found LF preceded by CR */
      }else{
        flags |= LOOK_LONE_LF;
      }
      if( j>LENGTH_MASK ){
        flags |= LOOK_LONG;  /* Very long line -> binary */
      }
      j = 0;
    }else if( c=='\r' ){
      flags |= LOOK_CR;
      if( n<=1 || z[1]!='\n' ){
        flags |= LOOK_LONE_CR;  /* Not enough chars or next char not LF */
      }
    }
  }
  if( n ){
    flags |= LOOK_SHORT;  /* The whole blob was not examined */
  }
  if( j>LENGTH_MASK ){
    flags |= LOOK_LONG;  /* Very long line -> binary */
  }
  return flags;
}

/*
** Checks for proper UTF-8. It uses the method described in:
**   http://en.wikipedia.org/wiki/UTF-8#Invalid_byte_sequences
** except for the "overlong form" of \u0000 which is not considered
** invalid here: Some languages like Java and Tcl use it. This function
** also considers valid the derivatives CESU-8 & WTF-8 (as described in
** the same wikipedia article referenced previously). For UTF-8 characters
** > 0x7f, the variable 'c' not necessary means the real lead byte.
** It's number of higher 1-bits indicate the number of continuation
** bytes that are expected to be followed. E.g. when 'c' has a value
** in the range 0xc0..0xdf it means that after 'c' a single continuation
** byte is expected. A value 0xe0..0xef means that after 'c' two more
** continuation bytes are expected.
*/

int invalid_utf8(
  const Blob *pContent
){
  const unsigned char *z = (unsigned char *) blob_buffer(pContent);
  unsigned int n = blob_size(pContent);
  unsigned char c; /* lead byte to be handled. */

  if( n==0 ) return 0;  /* Empty file -> OK */
  c = *z;
  while( --n>0 ){
    if( c>=0x80 ){
      const unsigned char *def; /* pointer to range table*/

      c <<= 1; /* multiply by 2 and get rid of highest bit */
      def = &lb_tab[c]; /* search fb's valid range in table */
      if( (unsigned int)(*++z-def[0])>=def[1] ){
        return LOOK_INVALID; /* Invalid UTF-8 */
      }
      c = (c>=0xC0) ? (c|3) : ' '; /* determine next lead byte */
    } else {
      c = *++z;
    }
  }
  return (c>=0x80) ? LOOK_INVALID : 0; /* Final lead byte must be ASCII. */
}

/*
** Define the type needed to represent a Unicode (UTF-16) character.
*/
#ifndef WCHAR_T
#  ifdef _WIN32
#    define WCHAR_T wchar_t
#  else
#    define WCHAR_T unsigned short
#  endif
#endif

/*
** Maximum length of a line in a text file, in UTF-16 characters.  (4096)
** The number of bytes represented by this value cannot exceed LENGTH_MASK
** bytes, because that is the line buffer size used by the diff engine.
*/
#define UTF16_LENGTH_MASK_SZ   (LENGTH_MASK_SZ-(sizeof(WCHAR_T)-sizeof(char)))
#define UTF16_LENGTH_MASK      ((1<<UTF16_LENGTH_MASK_SZ)-1)

/*
** This macro is used to swap the byte order of a UTF-16 character in the
** looks_like_utf16() function.
*/
#define UTF16_SWAP(ch)         ((((ch) << 8) & 0xff00) | (((ch) >> 8) & 0xff))
#define UTF16_SWAP_IF(expr,ch) ((expr) ? UTF16_SWAP((ch)) : (ch))

/*
** This function attempts to scan each logical line within the blob to
** determine the type of content it appears to contain.  The return value
** is a combination of one or more of the LOOK_XXX flags (see above):
**
** !LOOK_BINARY -- The content appears to consist entirely of text; however,
**                 the encoding may not be UTF-16.
**
** LOOK_BINARY -- The content appears to be binary because it contains one
**                or more embedded NUL characters or an extremely long line.
**                Since this function does not understand UTF-8, it may
**                falsely consider UTF-8 text to be binary.
**
** Additional flags (i.e. those other than the ones included in LOOK_BINARY)
** may be present in the result as well; however, they should not impact the
** determination of text versus binary content.
**
************************************ WARNING **********************************
**
** This function does not validate that the blob content is properly formed
** UTF-16.  It assumes that all code points are the same size.  It does not
** validate any code points.  It makes no attempt to detect if any [invalid]
** switches between the UTF-16be and UTF-16le encodings occur.
**
** The only code points that this function cares about are the NUL character,
** carriage-return, and line-feed.
**
** This function examines the contents of the blob until one of the flags
** specified in "stopFlags" is set.
**
************************************ WARNING **********************************
*/
int looks_like_utf16(const Blob *pContent, int bReverse, int stopFlags){
  const WCHAR_T *z = (WCHAR_T *)blob_buffer(pContent);
  unsigned int n = blob_size(pContent);
  int j, c, flags = LOOK_NONE;  /* Assume UTF-16 text, prove otherwise */

  if( n%sizeof(WCHAR_T) ){
    flags |= LOOK_ODD;  /* Odd number of bytes -> binary (UTF-8?) */
  }
  if( n<sizeof(WCHAR_T) ) return flags;/* Zero or One byte -> binary (UTF-8?) */
  c = *z;
  if( bReverse ){
    c = UTF16_SWAP(c);
  }
  if( c==0 ){
    flags |= LOOK_NUL;  /* NUL character in a file -> binary */
  }else if( c=='\r' ){
    flags |= LOOK_CR;
    if( n<(2*sizeof(WCHAR_T)) || UTF16_SWAP_IF(bReverse, z[1])!='\n' ){
      flags |= LOOK_LONE_CR;  /* Not enough chars or next char not LF */
    }
  }
  j = (c!='\n');
  if( !j ) flags |= (LOOK_LF | LOOK_LONE_LF);  /* Found LF as first char */
  while( !(flags&stopFlags) && ((n-=sizeof(WCHAR_T))>=sizeof(WCHAR_T)) ){
    int c2 = c;
    c = *++z;
    if( bReverse ){
      c = UTF16_SWAP(c);
    }
    ++j;
    if( c==0 ){
      flags |= LOOK_NUL;  /* NUL character in a file -> binary */
    }else if( c=='\n' ){
      flags |= LOOK_LF;
      if( c2=='\r' ){
        flags |= (LOOK_CR | LOOK_CRLF);  /* Found LF preceded by CR */
      }else{
        flags |= LOOK_LONE_LF;
      }
      if( j>UTF16_LENGTH_MASK ){
        flags |= LOOK_LONG;  /* Very long line -> binary */
      }
      j = 0;
    }else if( c=='\r' ){
      flags |= LOOK_CR;
      if( n<(2*sizeof(WCHAR_T)) || UTF16_SWAP_IF(bReverse, z[1])!='\n' ){
        flags |= LOOK_LONE_CR;  /* Not enough chars or next char not LF */
      }
    }
  }
  if( n ){
    flags |= LOOK_SHORT;  /* The whole blob was not examined */
  }
  if( j>UTF16_LENGTH_MASK ){
    flags |= LOOK_LONG;  /* Very long line -> binary */
  }
  return flags;
}

/*
** This function returns an array of bytes representing the byte-order-mark
** for UTF-8.
*/
const unsigned char *get_utf8_bom(int *pnByte){
  static const unsigned char bom[] = {
    0xef, 0xbb, 0xbf, 0x00, 0x00, 0x00
  };
  if( pnByte ) *pnByte = 3;
  return bom;
}

/*
** This function returns non-zero if the blob starts with a UTF-8
** byte-order-mark (BOM).
*/
int starts_with_utf8_bom(const Blob *pContent, int *pnByte){
  const char *z = blob_buffer(pContent);
  int bomSize = 0;
  const unsigned char *bom = get_utf8_bom(&bomSize);

  if( pnByte ) *pnByte = bomSize;
  if( (int)blob_size(pContent)<bomSize ) return 0;
  return memcmp(z, bom, bomSize)==0;
}

/*
** This function returns non-zero if the blob starts with a UTF-16
** byte-order-mark (BOM), either in the endianness of the machine
** or in reversed byte order. The UTF-32 BOM is ruled out by checking
** if the UTF-16 BOM is not immediately followed by (utf16) 0.
** pnByte is only set when the function returns 1.
**
** pbReverse is always set, even when no BOM is found. Without a BOM,
** it is set to 1 on little-endian and 0 on big-endian platforms. See
** clause D98 of conformance (section 3.10) of the Unicode standard.
*/
int starts_with_utf16_bom(
  const Blob *pContent, /* IN: Blob content to perform BOM detection on. */
  int *pnByte,          /* OUT: The number of bytes used for the BOM. */
  int *pbReverse        /* OUT: Non-zero for BOM in reverse byte-order. */
){
  const unsigned char *z = (unsigned char *)blob_buffer(pContent);
  int bomSize = sizeof(unsigned short);
  int size = blob_size(pContent);
  unsigned short i0;

  if( size<bomSize ) goto noBom;  /* No: cannot read BOM. */
  if( size>=(2*bomSize) && z[2]==0 && z[3]==0 ) goto noBom;
  memcpy(&i0, z, sizeof(i0));
  if( i0==0xfeff ){
    if( pbReverse ) *pbReverse = 0;
  }else if( i0==0xfffe ){
    if( pbReverse ) *pbReverse = 1;
  }else{
    static const int one = 1;
  noBom:
    if( pbReverse ) *pbReverse = *(char *) &one;
    return 0; /* No: UTF-16 byte-order-mark not found. */
  }
  if( pnByte ) *pnByte = bomSize;
  return 1; /* Yes. */
}

/*
** Returns non-zero if the specified content could be valid UTF-16.
*/
int could_be_utf16(const Blob *pContent, int *pbReverse){
  return (blob_size(pContent) % sizeof(WCHAR_T) == 0) ?
      starts_with_utf16_bom(pContent, 0, pbReverse) : 0;
}


/*
** COMMAND: test-looks-like-utf
**
** Usage:  %fossil test-looks-like-utf FILENAME
**
** Options:
**    -n|--limit N     Repeat looks-like function N times, for
**                     performance measurement. Default = 1
**    --utf8           Ignoring BOM and file size, force UTF-8 checking
**    --utf16          Ignoring BOM and file size, force UTF-16 checking
**
** FILENAME is the name of a file to check for textual content in the UTF-8
** and/or UTF-16 encodings.
*/
void looks_like_utf_test_cmd(void){
  Blob blob;         /* the contents of the specified file */
  int fUtf8 = 0;     /* return value of starts_with_utf8_bom() */
  int fUtf16 = 0;    /* return value of starts_with_utf16_bom() */
  int fUnicode = 0;  /* return value of could_be_utf16() */
  int lookFlags = 0; /* output flags from looks_like_utf8/utf16() */
  int bRevUtf16 = 0; /* non-zero -> UTF-16 byte order reversed */
  int fForceUtf8 = find_option("utf8",0,0)!=0;
  int fForceUtf16 = find_option("utf16",0,0)!=0;
  const char *zCount = find_option("limit","n",1);
  int nRepeat = 1;

  if( g.argc!=3 ) usage("FILENAME");
  if( zCount ){
    nRepeat = atoi(zCount);
  }
  blob_read_from_file(&blob, g.argv[2], ExtFILE);
  while( --nRepeat >= 0 ){
    fUtf8 = starts_with_utf8_bom(&blob, 0);
    fUtf16 = starts_with_utf16_bom(&blob, 0, &bRevUtf16);
    if( fForceUtf8 ){
      fUnicode = 0;
    }else{
      fUnicode = could_be_utf16(&blob, 0) || fForceUtf16;
    }
    if( fUnicode ){
      lookFlags = looks_like_utf16(&blob, bRevUtf16, 0);
    }else{
      lookFlags = looks_like_utf8(&blob, 0) | invalid_utf8(&blob);
    }
  }
  fossil_print("File \"%s\" has %d bytes.\n",g.argv[2],blob_size(&blob));
  fossil_print("Starts with UTF-8 BOM: %s\n",fUtf8?"yes":"no");
  fossil_print("Starts with UTF-16 BOM: %s\n",
               fUtf16?(bRevUtf16?"reversed":"yes"):"no");
  fossil_print("Looks like UTF-%s: %s\n",fUnicode?"16":"8",
               (lookFlags&LOOK_BINARY)?"no":"yes");
  fossil_print("Has flag LOOK_NUL: %s\n",(lookFlags&LOOK_NUL)?"yes":"no");
  fossil_print("Has flag LOOK_CR: %s\n",(lookFlags&LOOK_CR)?"yes":"no");
  fossil_print("Has flag LOOK_LONE_CR: %s\n",
               (lookFlags&LOOK_LONE_CR)?"yes":"no");
  fossil_print("Has flag LOOK_LF: %s\n",(lookFlags&LOOK_LF)?"yes":"no");
  fossil_print("Has flag LOOK_LONE_LF: %s\n",
               (lookFlags&LOOK_LONE_LF)?"yes":"no");
  fossil_print("Has flag LOOK_CRLF: %s\n",(lookFlags&LOOK_CRLF)?"yes":"no");
  fossil_print("Has flag LOOK_LONG: %s\n",(lookFlags&LOOK_LONG)?"yes":"no");
  fossil_print("Has flag LOOK_INVALID: %s\n",
               (lookFlags&LOOK_INVALID)?"yes":"no");
  fossil_print("Has flag LOOK_ODD: %s\n",(lookFlags&LOOK_ODD)?"yes":"no");
  fossil_print("Has flag LOOK_SHORT: %s\n",(lookFlags&LOOK_SHORT)?"yes":"no");
  blob_reset(&blob);
}

/*
** Return true if z[i] is the whole word given by zWord in a context that
** might be an attempted SQL injection.
*/
static int isWholeWord(const char *z, unsigned int i, const char *zWord, int n){
  if( i==0 ) return 0;
  if( sqlite3_strnicmp(z+i, zWord, n)!=0 ) return 0;
  if( fossil_isalnum(z[i-1]) ) return 0;
  if( fossil_isalnum(z[i+n]) ) return 0;
  if( strchr("-)_", z[i-1])!=0 ) return 0;
  if( strchr("(_", z[i+n])!=0 ) return 0;
  return 1;
}

/*
** Returns true if the given text contains certain keywords or
** punctuation which indicate that it might be an SQL injection attempt
** or some other kind of mischief.
**
** This is not a defense against vulnerabilities in the Fossil code.
** Rather, this is part of an effort to do early detection of malicious
** spiders to avoid them using up too many CPU cycles.
*/
int looks_like_sql_injection(const char *zTxt){
  unsigned int i;
  if( zTxt==0 ) return 0;
  for(i=0; zTxt[i]; i++){
    switch( zTxt[i] ){
      case ';':
      case '\'':
        return 1;
      case '/':             /* 0123456789 123456789 */
        if( strncmp(zTxt+i+1, "/wp-content/plugins/", 20)==0 ) return 1;
        if( strncmp(zTxt+i+1, "/wp-admin/admin-ajax", 20)==0 ) return 1;
        break;
      case 'a':
      case 'A':
        if( isWholeWord(zTxt, i, "and", 3) ) return 1;
        break;
      case 'n':
      case 'N':
        if( isWholeWord(zTxt, i, "null", 4) ) return 1;
        break;
      case 'o':
      case 'O':
        if( isWholeWord(zTxt, i, "order", 5) && fossil_isspace(zTxt[i+5]) ){
          return 1;
        }
        if( isWholeWord(zTxt, i, "or", 2) ) return 1;
        break;
      case 's':
      case 'S':
        if( isWholeWord(zTxt, i, "select", 6) ) return 1;
        break;
      case 'w':
      case 'W':
        if( isWholeWord(zTxt, i, "waitfor", 7) ) return 1;
        break;
    }
  }
  return 0;
}

/*
** This is a utility routine associated with the test-looks-like-sql-injection
** command.
**
** Read input from zInFile and print only those lines that look like they
** might be SQL injection.
**
** Or if bInvert is true, then show the opposite - those lines that do NOT
** look like SQL injection.
*/
static void show_sql_injection_lines(
  const char *zInFile,       /* Name of input file */
  int bInvert,               /* Invert the sense of the output (-v) */
  int bDeHttpize             /* De-httpize the inputs.  (-d) */
){
  FILE *in;
  char zLine[10000];
  if( zInFile==0 || strcmp(zInFile,"-")==0 ){
    in = stdin;
  }else{
    in = fopen(zInFile, "rb");
    if( in==0 ){
      fossil_fatal("cannot open \"%s\" for reading\n", zInFile);
    }
  }
  while( fgets(zLine, sizeof(zLine), in) ){
    dehttpize(zLine);
    if( (looks_like_sql_injection(zLine)!=0) ^ bInvert ){
      fossil_print("%s", zLine);
    }
  }
  if( in!=stdin ) fclose(in);
}

/*
** COMMAND: test-looks-like-sql-injection
**
** Read lines of input from files named as arguments (or from standard
** input if no arguments are provided) and print those that look like they
** might be part of an SQL injection attack.
**
** Used to test the looks_lide_sql_injection() utility subroutine, possibly
** by piping in actual server log data.
*/
void test_looks_like_sql_injection(void){
  int i;
  int bInvert = find_option("invert","v",0)!=0;
  int bDeHttpize = find_option("dehttpize","d",0)!=0;
  verify_all_options();
  if( g.argc==2 ){
    show_sql_injection_lines(0, bInvert, bDeHttpize);
  }
  for(i=2; i<g.argc; i++){
    show_sql_injection_lines(g.argv[i], bInvert, bDeHttpize);
  }
}
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1038
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1980
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1986
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2085
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2095
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2110
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2310




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2325
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3111
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3263
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3414
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module codes the main() procedure that runs first when the
** program is invoked.
*/
#include "VERSION.h"
#include "config.h"
#if defined(_WIN32)
#  include <windows.h>
#  include <io.h>
#  define GETPID (int)GetCurrentProcessId
#endif

/* BUGBUG: This (PID_T) does not work inside of INTERFACE block. */
#if USE_SEE
#if defined(_WIN32)
typedef DWORD PID_T;
#else
typedef pid_t PID_T;
#endif
#endif

#include "main.h"
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>


#include <stdlib.h> /* atexit() */
#include <zlib.h>
#if !defined(_WIN32)
#  include <errno.h> /* errno global */
#  include <unistd.h>
#  include <signal.h>
#  define GETPID getpid
#endif
#ifdef FOSSIL_ENABLE_SSL
#  include "openssl/crypto.h"
#endif
#if INTERFACE

#ifdef FOSSIL_ENABLE_TCL
/*
** Number of elements in an array
#  include "tcl.h"
*/
#define count(X)  (sizeof(X)/sizeof(X[0]))
#endif
#ifdef FOSSIL_ENABLE_JSON
#  include "cson_amalgamation.h" /* JSON API. */
#  include "json_detail.h"
#endif
#ifdef HAVE_BACKTRACE
# include <execinfo.h>
#endif

/*
** Default length of a timeout for serving an HTTP request.  Changable
** using the "--timeout N" command-line option or via "timeout: N" in the
** Size of a UUID in characters
** CGI script.
*/
#ifndef FOSSIL_DEFAULT_TIMEOUT
#define UUID_SIZE 40
# define FOSSIL_DEFAULT_TIMEOUT 600  /* 10 minutes */
#endif

/*
** Maximum number of auxiliary parameters on reports
*/
#define MX_AUX  5

/*
** Holds flags for fossil user permissions.
*/
struct FossilUserPerms {
  char Setup;            /* s: use Setup screens on web interface */
  char Admin;            /* a: administrative permission */
  char Password;         /* p: change password */
  char Query;            /* q: create new reports */
  char Write;            /* i: xfer inbound. check-in */
  char Read;             /* o: xfer outbound. check-out */
  char Hyperlink;        /* h: enable the display of hyperlinks */
  char Clone;            /* g: clone */
  char RdWiki;           /* j: view wiki via web */
  char NewWiki;          /* f: create new wiki via web */
  char ApndWiki;         /* m: append to wiki via web */
  char WrWiki;           /* k: edit wiki via web */
  char ModWiki;          /* l: approve and publish wiki content (Moderator) */
  char RdTkt;            /* r: view tickets via web */
  char NewTkt;           /* n: create new tickets */
  char ApndTkt;          /* c: append to tickets via the web */
  char WrTkt;            /* w: make changes to tickets via web */
  char ModTkt;           /* q: approve and publish ticket changes (Moderator) */
  char Attach;           /* b: add attachments */
  char TktFmt;           /* t: create new ticket report formats */
  char RdAddr;           /* e: read email addresses or other private data */
  char Zip;              /* z: download zipped artifact via /zip URL */
  char Private;          /* x: can send and receive private content */
  char WrUnver;          /* y: can push unversioned content */
  char RdForum;          /* 2: Read forum posts */
  char WrForum;          /* 3: Create new forum posts */
  char WrTForum;         /* 4: Post to forums not subject to moderation */
  char ModForum;         /* 5: Moderate (approve or reject) forum posts */
  char AdminForum;       /* 6: Grant capability 4 to other users */
  char EmailAlert;       /* 7: Sign up for email notifications */
  char Announce;         /* A: Send announcements */
  char Chat;             /* C: read or write the chatroom */
  char Debug;            /* D: show extra Fossil debugging features */
  /* These last two are included to block infinite recursion */
  char XReader;          /* u: Inherit all privileges of "reader" */
  char XDeveloper;       /* v: Inherit all privileges of "developer" */
};
** All global variables are in this structure.

#ifdef FOSSIL_ENABLE_TCL
/*
** All Tcl related context information is in this structure.  This structure
** definition has been copied from and should be kept in sync with the one in
** "th_tcl.c".
*/
struct TclContext {
  int argc;              /* Number of original (expanded) arguments. */
  char **argv;           /* Full copy of the original (expanded) arguments. */
  void *hLibrary;        /* The Tcl library module handle. */
  void *xFindExecutable; /* See tcl_FindExecutableProc in th_tcl.c. */
  void *xCreateInterp;   /* See tcl_CreateInterpProc in th_tcl.c. */
  void *xDeleteInterp;   /* See tcl_DeleteInterpProc in th_tcl.c. */
  void *xFinalize;       /* See tcl_FinalizeProc in th_tcl.c. */
  Tcl_Interp *interp;    /* The on-demand created Tcl interpreter. */
  int useObjProc;        /* Non-zero if an objProc can be called directly. */
  int useTip285;         /* Non-zero if TIP #285 is available. */
  char *setup;           /* The optional Tcl setup script. */
  void *xPreEval;        /* Optional, called before Tcl_Eval*(). */
  void *pPreContext;     /* Optional, provided to xPreEval(). */
  void *xPostEval;       /* Optional, called after Tcl_Eval*(). */
  void *pPostContext;    /* Optional, provided to xPostEval(). */
};
#endif

struct Global {
  int argc; char **argv;  /* Command-line arguments to the program */
  char **argvOrig;        /* Original g.argv prior to removing options */
  char *nameOfExe;        /* Full path of executable. */
  const char *zErrlog;    /* Log errors to this file, if not NULL */
  const char *zPhase;     /* Phase of operation, for use by the error log
                          ** and for deriving $canonical_page TH1 variable */
  int isConst;            /* True if the output is unchanging */
  int isConst;            /* True if the output is unchanging & cacheable */
  const char *zVfsName;   /* The VFS to use for database connections */
  sqlite3 *db;            /* The connection to the databases */
  sqlite3 *dbConfig;      /* Separate connection for global_config table */
  int useAttach;          /* True if global_config is attached to repository */
  int configOpen;         /* True if the config database is open */
  long long int now;      /* Seconds since 1970 */
  char *zAuxSchema;       /* Main repository aux-schema */
  int dbIgnoreErrors;     /* Ignore database errors if true */
  char *zConfigDbName;    /* Path of the config database. NULL if not open */
  sqlite3_int64 now;      /* Seconds since 1970 */
  int repositoryOpen;     /* True if the main repository database is open */
  unsigned iRepoDataVers;  /* Initial data version for repository database */
  char *zRepositoryOption; /* Most recent cached repository option value */
  char *zRepositoryName;  /* Name of the repository database */
  const char *zHome;      /* Name of user home directory */
  char *zRepositoryName;  /* Name of the repository database file */
  char *zLocalDbName;     /* Name of the local database file */
  char *zOpenRevision;    /* Check-in version to use during database open */
  const char *zCmdName;   /* Name of the Fossil command currently running */
  int localOpen;          /* True if the local database is open */
  char *zLocalRoot;       /* The directory holding the  local database */
  int minPrefix;          /* Number of digits needed for a distinct UUID */
  int fSqlTrace;          /* True if -sqltrace flag is present */
  int fSqlPrint;          /* True if -sqlprint flag is present */
  int minPrefix;          /* Number of digits needed for a distinct hash */
  int eHashPolicy;        /* Current hash policy.  One of HPOLICY_* */
  int fSqlTrace;          /* True if --sqltrace flag is present */
  int fSqlStats;          /* True if --sqltrace or --sqlstats are present */
  int fSqlPrint;          /* True if --sqlprint flag is present */
  int fCgiTrace;          /* True if --cgitrace is enabled */
  int fQuiet;             /* True if -quiet flag is present */
  int fJail;              /* True if running with a chroot jail */
  int fHttpTrace;         /* Trace outbound HTTP requests */
  int fAnyTrace;          /* Any kind of tracing */
  int fAllowACME;         /* Deliver files from .well-known */
  char *zHttpAuth;        /* HTTP Authorization user:pass information */
  int fSystemTrace;       /* Trace calls to fossil_system(), --systemtrace */
  int fSshTrace;          /* Trace the SSH setup traffic */
  int fSshClient;         /* HTTP client flags for SSH client */
  int fNoHttpCompress;    /* Do not compress HTTP traffic (for debugging) */
  char *zSshCmd;          /* SSH command string */
  const char *zHttpCmd;   /* External program to do HTTP requests */
  int fNoSync;            /* Do not do an autosync even.  --nosync */
  char *zPath;            /* Name of webpage being served */
  int fNoSync;            /* Do not do an autosync ever.  --nosync */
  int fIPv4;              /* Use only IPv4, not IPv6. --ipv4 */
  char *zPath;            /* Name of webpage being served (may be NULL) */
  char *zExtra;           /* Extra path information past the webpage name */
  char *zBaseURL;         /* Full text of the URL being served */
  char *zHttpsURL;        /* zBaseURL translated to https: */
  char *zTop;             /* Parent directory of zPath */
  int nExtraURL;          /* Extra bytes added to SCRIPT_NAME */
  const char *zExtRoot;   /* Document root for the /ext sub-website */
  const char *zContentType;  /* The content type of the input HTTP request */
  int iErrPriority;       /* Priority of current error message */
  char *zErrMsg;          /* Text of an error message */
  int sslNotAvailable;    /* SSL is not available.  Do not redirect to https: */
  Blob cgiIn;             /* Input to an xfer www method */
  int cgiOutput;          /* Write error and status messages to CGI */
  int cgiOutput;          /* 0: command-line 1: CGI. 2: after CGI */
  int xferPanic;          /* Write error messages in XFER protocol */
  int fullHttpReply;      /* True for full HTTP reply.  False for CGI reply */
  Th_Interp *interp;      /* The TH1 interpreter */
  char *th1Setup;         /* The TH1 post-creation setup script, if any */
  int th1Flags;           /* The TH1 integration state flags */
  FILE *httpIn;           /* Accept HTTP input from here */
  FILE *httpOut;          /* Send HTTP output here */
  int httpUseSSL;         /* True to use an SSL codec for HTTP traffic */
  void *httpSSLConn;      /* The SSL connection */
  int xlinkClusterOnly;   /* Set when cloning.  Only process clusters */
  int fTimeFormat;        /* 1 for UTC.  2 for localtime.  0 not yet selected */
  int *aCommitFile;       /* Array of files to be committed */
  int markPrivate;        /* All new artifacts are private if true */

  int urlIsFile;          /* True if a "file:" url */
  char *ckinLockFail;     /* Check-in lock failure received from server */
  int clockSkewSeen;      /* True if clocks on client and server out of sync */
  int urlIsHttps;         /* True if a "https:" url */
  char *urlName;          /* Hostname for http: or filename for file: */
  int wikiFlags;          /* Wiki conversion flags applied to %W */
  char *urlHostname;      /* The HOST: parameter on http headers */
  char *urlProtocol;      /* "http" or "https" */
  int urlPort;            /* TCP port number for http: or https: */
  char isHTTP;            /* True if server/CGI modes, else assume CLI. */
  int urlDfltPort;        /* The default port for the given protocol */
  char *urlPath;          /* Pathname for http: */
  char jsHref;            /* If true, set href= using javascript, not HTML */
  char *urlUser;          /* User id for http: */
  char *urlPasswd;        /* Password for http: */
  Blob httpHeader;        /* Complete text of the HTTP request header */
  char *urlCanonical;     /* Canonical representation of the URL */
  char *urlProxyAuth;     /* Proxy-Authorizer: string */
  int dontKeepUrl;        /* Do not persist the URL */

  const char *zLogin;     /* Login name.  "" if not logged in. */
  UrlData url;            /* Information about current URL */
  const char *zLogin;     /* Login name.  NULL or "" if not logged in. */
  const char *zCkoutAlias;   /* doc/ uses this branch as an alias for "ckout" */
  const char *zMainMenuFile; /* --mainmenu FILE from server/ui/cgi */
  const char *zSSLIdentity;  /* Value of --ssl-identity option, filename of
                             ** SSL client identity */
  const char *zCgiFile;      /* Name of the CGI file */
  const char *zReqType;      /* Type of request: "HTTP", "CGI", "SCGI" */
#if USE_SEE
  const char *zPidKey;    /* Saved value of the --usepidkey option.  Only
                           * applicable when using SEE on Windows or Linux. */
#endif
  int useLocalauth;       /* No login required if from 127.0.0.1 */
  int noPswd;             /* Logged in without password (on 127.0.0.1) */
  int userUid;            /* Integer user id */
  int isHuman;            /* True if access by a human, not a spider or bot */
  int comFmtFlags;        /* Zero or more "COMMENT_PRINT_*" bit flags, should be
                          ** accessed through get_comment_format(). */
  const char *zSockName;  /* Name of the unix-domain socket file */
  const char *zSockMode;  /* File permissions for unix-domain socket */
  const char *zSockOwner; /* Owner, or owner:group for unix-domain socket */

  /* Information used to populate the RCVFROM table */
  int rcvid;              /* The rcvid.  0 if not yet defined. */
  char *zIpAddr;          /* The remote IP address */
  char *zNonce;           /* The nonce used for login */
  
  /* permissions used by the server */
  int okSetup;            /* s: use Setup screens on web interface */
  int okAdmin;            /* a: administrative permission */

  /* permissions available to current user */
  struct FossilUserPerms perm;

  /* permissions available to current user or to "anonymous".
  int okDelete;           /* d: delete wiki or tickets */
  int okPassword;         /* p: change password */
  int okQuery;            /* q: create new reports */
  int okWrite;            /* i: xfer inbound. checkin */
  int okRead;             /* o: xfer outbound. checkout */
  int okHistory;          /* h: access historical information. */
  int okClone;            /* g: clone */
  int okRdWiki;           /* j: view wiki via web */
  ** This is the logical union of perm permissions above with
  ** the value that perm would take if g.zLogin were "anonymous". */
  struct FossilUserPerms anon;

#ifdef FOSSIL_ENABLE_TCL
  /* all Tcl related context necessary for integration */
  struct TclContext tcl;
  int okNewWiki;          /* f: create new wiki via web */
  int okApndWiki;         /* m: append to wiki via web */
#endif
  int okWrWiki;           /* k: edit wiki via web */
  int okRdTkt;            /* r: view tickets via web */
  int okNewTkt;           /* n: create new tickets */
  int okApndTkt;          /* c: append to tickets via the web */
  int okWrTkt;            /* w: make changes to tickets via web */
  int okAttach;           /* b: add attachments */
  int okTktFmt;           /* t: create new ticket report formats */
  int okRdAddr;           /* e: read email addresses or other private data */
  int okZip;              /* z: download zipped artifact via /zip URL */

  /* For defense against Cross-site Request Forgery attacks */
  char zCsrfToken[12];    /* Value of the anti-CSRF token */
  int okCsrf;             /* Anti-CSRF token is present and valid */
  char zCsrfToken[16];    /* Value of the anti-CSRF token */
  int okCsrf;             /* -1:  unsafe
                          **  0:  unknown
                          **  1:  same origin
                          **  2:  same origin + is POST
                          **  3:  same origin, POST, valid csrf token */

  int parseCnt[10];       /* Counts of artifacts parsed */
  FILE *fDebug;           /* Write debug information here, if the file exists */
#ifdef FOSSIL_ENABLE_TH1_HOOKS
  int fNoThHook;          /* Disable all TH1 command/webpage hooks */
#endif
  int thTrace;            /* True to enable TH1 debugging output */
  Blob thLog;             /* Text of the TH1 debugging output */

  int isHome;             /* True if rendering the "home" page */

  /* Storage for the aux() and/or option() SQL function arguments */
  int nAux;                    /* Number of distinct aux() or option() values */
  const char *azAuxName[MX_AUX]; /* Name of each aux() or option() value */
  char *azAuxParam[MX_AUX];      /* Param of each aux() or option() value */
  const char *azAuxVal[MX_AUX];  /* Value of each aux() or option() value */
  const char **azAuxOpt[MX_AUX]; /* Options of each option() value */
  int anAuxCols[MX_AUX];         /* Number of columns for option() values */
  int allowSymlinks;             /* Cached "allow-symlinks" option */
  int mainTimerId;               /* Set to fossil_timer_start() */
  int nPendingRequest;           /* # of HTTP requests in "fossil server" */
  int nRequest;                  /* Total # of HTTP request */
  int bAvoidDeltaManifests;      /* Avoid using delta manifests if true */
#ifdef FOSSIL_ENABLE_JSON
  struct FossilJsonBits {
    int isJsonMode;            /* True if running in JSON mode, else
                                  false. This changes how errors are
                                  reported. In JSON mode we try to
                                  always output JSON-form error
                                  responses and always (in CGI mode)
                                  exit() with code 0 to avoid an HTTP
                                  500 error.
                               */
    int preserveRc;            /* Do not convert error codes into 0.
                                * This is primarily intended for use
                                * by the test suite. */
    int resultCode;            /* used for passing back specific codes
                               ** from /json callbacks. */
    int errorDetailParanoia;   /* 0=full error codes, 1=%10, 2=%100, 3=%1000 */
    cson_output_opt outOpt;    /* formatting options for JSON mode. */
    cson_value *authToken;     /* authentication token */
    const char *jsonp;         /* Name of JSONP function wrapper. */
    unsigned char dispatchDepth /* Tells JSON command dispatching
                                   which argument we are currently
                                   working on. For this purpose, arg#0
                                   is the "json" path/CLI arg.
                                */;
    struct {                   /* "garbage collector" */
      cson_value *v;
      cson_array *a;
    } gc;
    struct {                   /* JSON POST data. */
      cson_value *v;
      cson_array *a;
      int offset;              /* Tells us which PATH_INFO/CLI args
                                  part holds the "json" command, so
                                  that we can account for sub-repos
                                  and path prefixes.  This is handled
                                  differently for CLI and CGI modes.
                               */
      const char *commandStr   /*"command" request param.*/;
    } cmd;
    struct {                   /* JSON POST data. */
      cson_value *v;
      cson_object *o;
    } post;
    struct {                   /* GET/COOKIE params in JSON mode. */
      cson_value *v;
      cson_object *o;
    } param;
    struct {
      cson_value *v;
      cson_object *o;
    } reqPayload;              /* request payload object (if any) */
    cson_array *warnings;      /* response warnings */
    int timerId;               /* fetched from fossil_timer_start() */
  } json;
#endif /* FOSSIL_ENABLE_JSON */
  int ftntsIssues[4];     /* Counts for misref, strayed, joined, overnested */
  int diffCnt[3];         /* Counts for DIFF_NUMSTAT: files, ins, del */
};

/*
** Macro for debugging:
*/
#define CGIDEBUG(X)  if( g.fDebug ) cgi_debug X

#endif

Global g;

/*
** atexit() handler which frees up "some" of the resources
** The table of web pages supported by this application is generated 
** automatically by the "mkindex" program and written into a file
** used by fossil.
*/
static void fossil_atexit(void) {
  static int once = 0;
** named "page_index.h".  We include that file here to get access
** to the table.
*/
#include "page_index.h"

/*
  if( once++ ) return; /* Ensure that this routine only runs once */
#if USE_SEE
  /*
  ** Zero, unlock, and free the saved database encryption key now.
  */
  db_unsave_encryption_key();
#endif
#if defined(_WIN32) || (defined(__BIONIC__) && !defined(FOSSIL_HAVE_GETPASS))
  /*
  ** Free the secure getpass() buffer now.
  */
  freepass();
#endif
#if defined(_WIN32) && !defined(_WIN64) && defined(FOSSIL_ENABLE_TCL) && \
    defined(USE_TCL_STUBS)
  /*
  ** If Tcl is compiled on Windows using the latest MinGW, Fossil can crash
  ** when exiting while a stubs-enabled Tcl is still loaded.  This is due to
  ** a bug in MinGW, see:
  **
** Search for a function whose name matches zName.  Write a pointer to
** that function into *pxFunc and return 0.  If no match is found,
  **     http://comments.gmane.org/gmane.comp.gnu.mingw.user/41724
** return 1.  If the command is ambiguous return 2;
**
** The NameMap structure and the tables we are searching against are
  **
  ** The workaround is to manually unload the loaded Tcl library prior to
** defined in the page_index.h header file which is automatically
** generated by mkindex.c program.
*/
static int name_search(
  ** exiting the process.  This issue does not impact 64-bit Windows.
  */
  unloadTcl(g.interp, &g.tcl);
  const char *zName,       /* The name we are looking for */
  const NameMap *aMap,     /* Search in this array */
  int nMap,                /* Number of slots in aMap[] */
  int *pIndex              /* OUT: The index in aMap[] of the match */
){
  int upr, lwr, cnt, m, i;
  int n = strlen(zName);
  lwr = 0;
  upr = nMap-1;
#endif
#ifdef FOSSIL_ENABLE_JSON
  cson_value_free(g.json.gc.v);
  memset(&g.json, 0, sizeof(g.json));
#endif
  while( lwr<=upr ){
    int mid, c;
#if !defined(_WIN32)
    mid = (upr+lwr)/2;
    c = strcmp(zName, aMap[mid].zName);
    if( c==0 ){
  if( g.zSockName && file_issocket(g.zSockName) ){
    unlink(g.zSockName);
  }
#endif
      *pIndex = mid;
      return 0;
    }else if( c<0 ){
  free(g.zErrMsg);
  if(g.db){
      upr = mid - 1;
    }else{
    db_close(0);
      lwr = mid + 1;
    }
  }
  }
  for(m=cnt=0, i=upr-2; i<=upr+3 && i<nMap; i++){
    if( i<0 ) continue;
    if( strncmp(zName, aMap[i].zName, n)==0 ){
      m = i;
  manifest_clear_cache();
  content_clear_cache(1);
  rebuild_clear_cache();
  /*
  ** FIXME: The next two lines cannot always be enabled; however, they
  **        are very useful for tracking down TH1 memory leaks.
  */
  if( fossil_getenv("TH1_DELETE_INTERP")!=0 ){
    if( g.interp ){
      Th_DeleteInterp(g.interp); g.interp = 0;
      cnt++;
    }
  }
  if( cnt==1 ){
#if defined(TH_MEMDEBUG)
    if( Th_GetOutstandingMalloc()!=0 ){
    *pIndex = m;
    return 0;
  }
      fossil_print("Th_GetOutstandingMalloc() => %d\n",
                   Th_GetOutstandingMalloc());
    }
  return 1+(cnt>1);
}

    assert( Th_GetOutstandingMalloc()==0 );
#endif
  }
}

/*
** Convert all arguments from mbcs (or unicode) to UTF-8. Then
** search g.argv for arguments "--args FILENAME". If found, then
** (1) remove the two arguments from g.argv
** This procedure runs first.
** (2) Read the file FILENAME
** (3) Use the contents of FILE to replace the two removed arguments:
**     (a) Ignore blank lines in the file
**     (b) Each non-empty line of the file is an argument, except
**     (c) If the line begins with "-" and contains a space, it is broken
**         into two arguments at the space.
*/
int main(int argc, char **argv){
  const char *zCmdName;
void expand_args_option(int argc, void *argv){
  Blob file = empty_blob;   /* Content of the file */
  Blob line = empty_blob;   /* One line of the file */
  unsigned int nLine;       /* Number of lines in the file*/
  unsigned int i, j, k;     /* Loop counters */
  int n;                    /* Number of bytes in one line */
  unsigned int nArg;        /* Number of new arguments */
  char *z;                  /* General use string pointer */
  char **newArgv;           /* New expanded g.argv under construction */
  const char *zFileName;    /* input file name */
  int idx;
  int rc;
  FILE *inFile;             /* input FILE */

  sqlite3_config(SQLITE_CONFIG_LOG, fossil_sqlite_log, 0);
  g.now = time(0);
  g.argc = argc;
  g.argv = argv;
  if( getenv("GATEWAY_INTERFACE")!=0 ){
    zCmdName = "cgi";
  }else if( argc<2 ){
  sqlite3_initialize();
#if defined(_WIN32) && defined(BROKEN_MINGW_CMDLINE)
  for(i=0; (int)i<g.argc; i++) g.argv[i] = fossil_mbcs_to_utf8(g.argv[i]);
    fprintf(stderr, "Usage: %s COMMAND ...\n", argv[0]);
    exit(1);
  }else{
    g.fQuiet = find_option("quiet", 0, 0)!=0;
    g.fSqlTrace = find_option("sqltrace", 0, 0)!=0;
    g.fSqlPrint = find_option("sqlprint", 0, 0)!=0;
    g.fHttpTrace = find_option("httptrace", 0, 0)!=0;
    g.zLogin = find_option("user", "U", 1);
    zCmdName = argv[1];
#else
  for(i=0; (int)i<g.argc; i++) g.argv[i] = fossil_path_to_utf8(g.argv[i]);
#endif
  g.nameOfExe = file_fullexename(g.argv[0]);
  for(i=1; (int)i<g.argc-1; i++){
    z = g.argv[i];
    if( z[0]!='-' ) continue;
    z++;
    if( z[0]=='-' ) z++;
    /* Maintenance reminder: we do not stop at a "--" flag here,
    ** instead delegating that to find_option(). Doing it here
    ** introduces some weird corner cases, as covered in forum thread
    ** 4382bbc66757c39f. e.g. (fossil -U -- --args ...) is handled
    ** differently when we stop at "--" here. */
    if( fossil_strcmp(z, "args")==0 ) break;
  }
  rc = name_search(zCmdName, aCommand, count(aCommand), &idx);
  if( rc==1 ){
  if( (int)i>=g.argc-1 ){
    fprintf(stderr,"%s: unknown command: %s\n"
                   "%s: use \"help\" for more information\n",
                   argv[0], zCmdName, argv[0]);
    g.argvOrig = fossil_malloc( sizeof(char*)*(g.argc+1) );
    return 1;
  }else if( rc==2 ){
    fprintf(stderr,"%s: ambiguous command prefix: %s\n"
                   "%s: use \"help\" for more information\n",
                   argv[0], zCmdName, argv[0]);
    return 1;
    memcpy(g.argvOrig, g.argv, sizeof(g.argv[0])*(g.argc+1));
    return;
  }
  aCommand[idx].xFunc();
  return 0;
}

/*
** The following variable becomes true while processing a fatal error
** or a panic.  If additional "recursive-fatal" errors occur while
** shutting down, the recursive errors are silently ignored.
*/
static int mainInFatalError = 0;

/*
** Print an error message, rollback all databases, and quit.  These
** routines never return.
*/
void fossil_panic(const char *zFormat, ...){
  char *z;
  va_list ap;
  static int once = 1;
  zFileName = g.argv[i+1];
  mainInFatalError = 1;
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
  if( g.cgiOutput && once ){
    once = 0;
  if( strcmp(zFileName,"-")==0 ){
    inFile = stdin;
    cgi_printf("<p><font color=\"red\">%h</font></p>", z);
    cgi_reply();
  }else if( !file_isfile(zFileName, ExtFILE) ){
    fossil_fatal("Not an ordinary file: \"%s\"", zFileName);
  }else{
    fprintf(stderr, "%s: %s\n", g.argv[0], z);
  }
    inFile = fossil_fopen(zFileName,"rb");
    if( inFile==0 ){
      fossil_fatal("Cannot open -args file [%s]", zFileName);
    }
  db_force_rollback();
  exit(1);
}
void fossil_fatal(const char *zFormat, ...){
  char *z;
  }
  blob_read_from_channel(&file, inFile, -1);
  if(stdin != inFile){
    fclose(inFile);
  }
  inFile = NULL;
  blob_to_utf8_no_bom(&file, 1);
  z = blob_str(&file);
  for(k=0, nLine=1; z[k]; k++) if( z[k]=='\n' ) nLine++;
  if( nLine>100000000 ) fossil_fatal("too many command-line arguments");
  nArg = g.argc + nLine*2;
  newArgv = fossil_malloc( sizeof(char*)*nArg*2 + 2);
  va_list ap;
  mainInFatalError = 1;
  for(j=0; j<i; j++) newArgv[j] = g.argv[j];

  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
  if( g.cgiOutput ){
    g.cgiOutput = 0;
    cgi_printf("<p><font color=\"red\">%h</font></p>", z);
    cgi_reply();
  }else{
    fprintf(stderr, "%s: %s\n", g.argv[0], z);
  }
  db_force_rollback();
  exit(1);
}
  blob_rewind(&file);
  while( nLine-->0 && (n = blob_line(&file, &line))>0 ){
    /* Reminder: ^^^ nLine check avoids that embedded NUL bytes in the
    ** --args file causes nLine to be less than blob_line() will end
    ** up reporting, as such a miscount leads to an illegal memory
    ** write. See forum post
    ** https://fossil-scm.org/forum/forumpost/7b34eecc1b8c for
    ** details */
    if( n<1 ){
      /* Reminder: corner-case: a line with 1 byte and no newline. */
      continue;
    }
    z = blob_buffer(&line);
    if('\n'==z[n-1]){
      z[n-1] = 0;
    }

/* This routine works like fossil_fatal() except that if called
** recursively, the recursive call is a no-op.
**
** Use this in places where an error might occur while doing
** fatal error shutdown processing.  Unlike fossil_panic() and
** fossil_fatal() which never return, this routine might return if
    if((n>1) && ('\r'==z[n-2])){
      if(n==2) continue /*empty line*/;
      z[n-2] = 0;
** the fatal error handing is already in process.  The caller must
** be prepared for this routine to return.
    }
    if(!z[0]) continue;
*/
void fossil_fatal_recursive(const char *zFormat, ...){
    if( j>=nArg ){
      fossil_fatal("malformed command-line arguments");
  char *z;
  va_list ap;
  if( mainInFatalError ) return;
  mainInFatalError = 1;
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
    }
    newArgv[j++] = z;
    if( z[0]=='-' ){
      for(k=1; z[k] && !fossil_isspace(z[k]); k++){}
      if( z[k] ){
        z[k] = 0;
  va_end(ap);
  if( g.cgiOutput ){
        k++;
        if( z[k] ) newArgv[j++] = &z[k];
    g.cgiOutput = 0;
    cgi_printf("<p><font color=\"red\">%h</font></p>", z);
    cgi_reply();
  }else{
    fprintf(stderr, "%s: %s\n", g.argv[0], z);
  }
      }
  db_force_rollback();
  exit(1);
}


/* Print a warning message */
void fossil_warning(const char *zFormat, ...){
  char *z;
  va_list ap;
    }
  }
  i += 2;
  while( (int)i<g.argc ) newArgv[j++] = g.argv[i++];
  newArgv[j] = 0;
  g.argc = j;
  g.argv = newArgv;
  g.argvOrig = &g.argv[j+1];
  memcpy(g.argvOrig, g.argv, sizeof(g.argv[0])*(j+1));
}

#ifdef FOSSIL_ENABLE_TCL
/*
** Make a deep copy of the provided argument array and return it.
*/
static char **copy_args(int argc, char **argv){
  char **zNewArgv;
  int i;
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
  if( g.cgiOutput ){
    cgi_printf("<p><font color=\"red\">%h</font></p>", z);
  }else{
    fprintf(stderr, "%s: %s\n", g.argv[0], z);
  zNewArgv = fossil_malloc( sizeof(char*)*(argc+1) );
  memset(zNewArgv, 0, sizeof(char*)*(argc+1));
  for(i=0; i<argc; i++){
    zNewArgv[i] = fossil_strdup(argv[i]);
  }
  return zNewArgv;
}
#endif

/*
** Return a name for an SQLite error code
** Returns a name for a SQLite return code.
*/
static const char *sqlite_error_code_name(int iCode){
static const char *fossil_sqlite_return_code_name(int rc){
  static char zCode[30];
  switch( iCode & 0xff ){
  switch( rc & 0xff ){
    case SQLITE_OK:         return "SQLITE_OK";
    case SQLITE_ERROR:      return "SQLITE_ERROR";
    case SQLITE_INTERNAL:   return "SQLITE_INTERNAL";
    case SQLITE_PERM:       return "SQLITE_PERM";
    case SQLITE_ABORT:      return "SQLITE_ABORT";
    case SQLITE_BUSY:       return "SQLITE_BUSY";
    case SQLITE_LOCKED:     return "SQLITE_LOCKED";
    case SQLITE_NOMEM:      return "SQLITE_NOMEM";
    case SQLITE_READONLY:   return "SQLITE_READONLY";
    case SQLITE_INTERRUPT:  return "SQLITE_INTERRUPT";
    case SQLITE_IOERR:      return "SQLITE_IOERR";
    case SQLITE_CORRUPT:    return "SQLITE_CORRUPT";
    case SQLITE_NOTFOUND:   return "SQLITE_NOTFOUND";
    case SQLITE_FULL:       return "SQLITE_FULL";
    case SQLITE_CANTOPEN:   return "SQLITE_CANTOPEN";
    case SQLITE_PROTOCOL:   return "SQLITE_PROTOCOL";
    case SQLITE_EMPTY:      return "SQLITE_EMPTY";
    case SQLITE_SCHEMA:     return "SQLITE_SCHEMA";
    case SQLITE_TOOBIG:     return "SQLITE_TOOBIG";
    case SQLITE_CONSTRAINT: return "SQLITE_CONSTRAINT";
    case SQLITE_MISMATCH:   return "SQLITE_MISMATCH";
    case SQLITE_MISUSE:     return "SQLITE_MISUSE";
    case SQLITE_NOLFS:      return "SQLITE_NOLFS";
    case SQLITE_AUTH:       return "SQLITE_AUTH";
    case SQLITE_FORMAT:     return "SQLITE_FORMAT";
    case SQLITE_RANGE:      return "SQLITE_RANGE";
    case SQLITE_NOTADB:     return "SQLITE_NOTADB";
    case SQLITE_NOTICE:     return "SQLITE_NOTICE";
    case SQLITE_WARNING:    return "SQLITE_WARNING";
    case SQLITE_ROW:        return "SQLITE_ROW";
    case SQLITE_DONE:       return "SQLITE_DONE";
    default: {
      sqlite3_snprintf(sizeof(zCode),zCode,"error code %d",iCode);
      sqlite3_snprintf(sizeof(zCode), zCode, "SQLite return code %d", rc);
    }
  }
  return zCode;
}

/* Error logs from SQLite */
void fossil_sqlite_log(void *notUsed, int iCode, const char *zErrmsg){
  fossil_warning("%s: %s", sqlite_error_code_name(iCode), zErrmsg);
static void fossil_sqlite_log(void *notUsed, int iCode, const char *zErrmsg){
  sqlite3_stmt *p;
  Blob msg;
#ifdef __APPLE__
  /* Disable the file alias warning on apple products because Time Machine
  ** creates lots of aliases and the warnings alarm people. */
  if( iCode==SQLITE_WARNING ) return;
#endif
#ifndef FOSSIL_DEBUG
  /* Disable the automatic index warning except in FOSSIL_DEBUG builds. */
  if( iCode==SQLITE_WARNING_AUTOINDEX ) return;
#endif
  if( iCode==SQLITE_SCHEMA ) return;
  if( g.dbIgnoreErrors ) return;
#ifdef SQLITE_READONLY_DIRECTORY
  if( iCode==SQLITE_READONLY_DIRECTORY ){
    zErrmsg = "database is in a read-only directory";
  }
#endif
  blob_init(&msg, 0, 0);
  blob_appendf(&msg, "%s(%d): %s",
     fossil_sqlite_return_code_name(iCode), iCode, zErrmsg);
  if( g.db ){
    for(p=sqlite3_next_stmt(g.db, 0); p; p=sqlite3_next_stmt(g.db,p)){
      const char *zSql;
      if( !sqlite3_stmt_busy(p) ) continue;
      zSql = sqlite3_sql(p);
      if( zSql==0 ) continue;
      blob_appendf(&msg, "\nSQL: %s", zSql);
    }
  }
  fossil_warning("%s", blob_str(&msg));
  blob_reset(&msg);
}

/*
** This function attempts to find command line options known to contain
** bitwise flags and initializes the associated global variables.  After
** this function executes, all global variables (i.e. in the "g" struct)
** containing option-settable bitwise flag fields must be initialized.
*/
static void fossil_init_flags_from_options(void){
  const char *zValue = find_option("comfmtflags", 0, 1);
  if( zValue==0 ){
    zValue = find_option("comment-format", 0, 1);
  }
  if( zValue ){
    g.comFmtFlags = atoi(zValue);
  }else{
    g.comFmtFlags = COMMENT_PRINT_UNSET;   /* Command-line option not found. */
  }
}

/*
** Check to see if the Fossil binary contains an appended repository
** file using the appendvfs extension.  If so, change command-line arguments
** to cause Fossil to launch with "fossil ui" on that repo.
*/
static int fossilExeHasAppendedRepo(void){
  extern int deduceDatabaseType(const char*,int);
  if( 2==deduceDatabaseType(g.nameOfExe,0) ){
    static char *azAltArgv[] = { 0, "ui", 0, 0 };
    azAltArgv[0] = g.nameOfExe;
    azAltArgv[2] = g.nameOfExe;
    g.argv = azAltArgv;
    g.argc = 3;
    return 1;
  }else{
    return 0;
  }
}

/*
** This procedure runs first.
*/
#if defined(FOSSIL_FUZZ)
  /* Do not include a main() procedure when building for fuzz testing.
  ** libFuzzer will supply main(). */
#elif defined(_WIN32) && !defined(BROKEN_MINGW_CMDLINE)
  int _dowildcard = -1; /* This turns on command-line globbing in MinGW-w64 */
  int wmain(int argc, wchar_t **argv){ return fossil_main(argc,(char**)argv); }
#elif defined(_WIN32)
  int _CRT_glob = 0x0001; /* See MinGW bug #2062 */
  int main(int argc, char **argv){ return fossil_main(argc, argv); }
#else
  int main(int argc, char **argv){ return fossil_main(argc, argv); }
#endif

/* All the work of main() is done by a separate procedure "fossil_main()".
** We have to break this out, because fossil_main() is sometimes called
** separately (by the "shell" command) but we do not want atwait() handlers
** being called by separate invocations of fossil_main().
*/
int fossil_main(int argc, char **argv){
  const char *zCmdName = "unknown";
  const CmdOrPage *pCmd = 0;
  int rc;

  g.zPhase = "init";
#if !defined(_WIN32_WCE)
  if( fossil_getenv("FOSSIL_BREAK") ){
    if( fossil_isatty(0) && fossil_isatty(2) ){
      fprintf(stderr,
          "attach debugger to process %d and press any key to continue.\n",
          GETPID());
      fgetc(stdin);
    }else{
#if defined(_WIN32) || defined(WIN32)
      DebugBreak();
#elif defined(SIGTRAP)
      raise(SIGTRAP);
#endif
    }
  }
#endif

  fossil_printf_selfcheck();
  fossil_limit_memory(1);

  /* When updating the minimum SQLite version, change the number here,
  ** and also MINIMUM_SQLITE_VERSION value set in ../auto.def.  Take
  ** care that both places agree! */
  if( sqlite3_libversion_number()<3046000
   || strncmp(sqlite3_sourceid(),"2024-08-16",10)<0
  ){
    fossil_panic("Unsuitable SQLite version %s, must be at least 3.43.0",
                 sqlite3_libversion());
  }

  sqlite3_config(SQLITE_CONFIG_MULTITHREAD);
  sqlite3_config(SQLITE_CONFIG_LOG, fossil_sqlite_log, 0);
  memset(&g, 0, sizeof(g));
  g.now = time(0);
  g.httpHeader = empty_blob;
#ifdef FOSSIL_ENABLE_JSON
#if defined(NDEBUG)
  g.json.errorDetailParanoia = 2 /* FIXME: make configurable
                                    One problem we have here is that this
                                    code is needed before the db is opened,
                                    so we can't sql for it.*/;
#else
  g.json.errorDetailParanoia = 0;
#endif
  g.json.outOpt = cson_output_opt_empty;
  g.json.outOpt.addNewline = 1;
  g.json.outOpt.indentation = 1 /* in CGI/server mode this can be configured */;
#endif /* FOSSIL_ENABLE_JSON */
  expand_args_option(argc, argv);
#ifdef FOSSIL_ENABLE_TCL
  memset(&g.tcl, 0, sizeof(TclContext));
  g.tcl.argc = g.argc;
  g.tcl.argv = copy_args(g.argc, g.argv); /* save full arguments */
#endif
  g.mainTimerId = fossil_timer_start();
  capture_case_sensitive_option();
  g.zVfsName = find_option("vfs",0,1);
  if( g.zVfsName==0 ){
    g.zVfsName = fossil_getenv("FOSSIL_VFS");
  }
  if( g.zVfsName ){
    sqlite3_vfs *pVfs = sqlite3_vfs_find(g.zVfsName);
    if( pVfs ){
      sqlite3_vfs_register(pVfs, 1);
    }else{
      fossil_fatal("no such VFS: \"%s\"", g.zVfsName);
    }
  }
  if( !find_option("nocgi", 0, 0) && fossil_getenv("GATEWAY_INTERFACE")!=0){
    zCmdName = "cgi";
    g.isHTTP = 1;
  }else if( g.argc<2 && !fossilExeHasAppendedRepo() ){
    fossil_print(
       "Usage: %s COMMAND ...\n"
       "   or: %s help           -- for a list of common commands\n"
       "   or: %s help COMMAND   -- for help with the named command\n",
       g.argv[0], g.argv[0], g.argv[0]);
    fossil_print(
      "\nCommands and filenames may be passed on to fossil from a file\n"
      "by using:\n"
      "\n    %s --args FILENAME ...\n",
      g.argv[0]
    );
    fossil_print(
      "\nEach line of the file is assumed to be a filename unless it starts\n"
      "with '-' and contains a space, in which case it is assumed to be\n"
      "another flag and is treated as such. --args FILENAME may be used\n"
      "in conjunction with any other flags.\n");
    fossil_exit(1);
  }else{
    const char *zChdir = find_option("chdir",0,1);
    g.isHTTP = 0;
    g.rcvid = 0;
    g.fQuiet = find_option("quiet", 0, 0)!=0;
    g.fSqlTrace = find_option("sqltrace", 0, 0)!=0;
    g.fSqlStats = find_option("sqlstats", 0, 0)!=0;
    g.fSystemTrace = find_option("systemtrace", 0, 0)!=0;
    g.fSshTrace = find_option("sshtrace", 0, 0)!=0;
    g.fCgiTrace = find_option("cgitrace", 0, 0)!=0;
    g.fSshClient = 0;
    g.zSshCmd = 0;
    if( g.fSqlTrace ) g.fSqlStats = 1;
#ifdef FOSSIL_ENABLE_JSON
    g.json.preserveRc = find_option("json-preserve-rc", 0, 0)!=0;
#endif
    g.fHttpTrace = find_option("httptrace", 0, 0)!=0;
#ifdef FOSSIL_ENABLE_TH1_HOOKS
    g.fNoThHook = find_option("no-th-hook", 0, 0)!=0;
#endif
    g.fAnyTrace = g.fSqlTrace|g.fSystemTrace|g.fSshTrace|
                  g.fHttpTrace|g.fCgiTrace;
    g.zHttpAuth = 0;
    g.zLogin = find_option("user", "U", 1);
    g.zSSLIdentity = find_option("ssl-identity", 0, 1);
    g.zErrlog = find_option("errorlog", 0, 1);
    fossil_init_flags_from_options();
    if( find_option("utc",0,0) ) g.fTimeFormat = 1;
    if( find_option("localtime",0,0) ) g.fTimeFormat = 2;
    if( zChdir && file_chdir(zChdir, 0) ){
      fossil_fatal("unable to change directories to %s", zChdir);
    }
#if USE_SEE
    db_maybe_handle_saved_encryption_key_for_process(SEE_KEY_READ);
#endif
    if( find_option("help",0,0)!=0 ){
      /* If --help is found anywhere on the command line, translate the command
       * to "fossil help cmdname" where "cmdname" is the first argument that
       * does not begin with a "-" character.  If all arguments start with "-",
       * translate to "fossil help argv[1] argv[2]...". */
      int i, nNewArgc;
      char **zNewArgv = fossil_malloc( sizeof(char*)*(g.argc+3) );
      zNewArgv[0] = g.argv[0];
      zNewArgv[1] = "help";
      zNewArgv[2] = "-c";
      for(i=1; i<g.argc; i++){
        if( g.argv[i][0]!='-' ){
          nNewArgc = 4;
          zNewArgv[3] = g.argv[i];
          zNewArgv[4] = 0;
          break;
        }
      }
      if( i==g.argc ){
        for(i=1; i<g.argc; i++) zNewArgv[i+1] = g.argv[i];
        nNewArgc = g.argc+1;
        zNewArgv[i+1] = 0;
      }
      g.argc = nNewArgc;
      g.argv = zNewArgv;
#if 0
    }else if( g.argc==2 && file_is_repository(g.argv[1]) ){
      char **zNewArgv = fossil_malloc( sizeof(char*)*4 );
      zNewArgv[0] = g.argv[0];
      zNewArgv[1] = "ui";
      zNewArgv[2] = g.argv[1];
      zNewArgv[3] = 0;
      g.argc = 3;
      g.argv = zNewArgv;
#endif
    }
    zCmdName = g.argv[1];
  }
#ifndef _WIN32
  /* There is a bug in stunnel4 in which it sometimes starts up client
  ** processes without first opening file descriptor 2 (standard error).
  ** If this happens, and a subsequent open() of a database returns file
  ** descriptor 2, and then an assert() fires and writes on fd 2, that
  ** can corrupt the data file.  To avoid this problem, make sure open()
  ** will never return file descriptor 2 or less. */
  if( !is_valid_fd(2) ){
    int nTry = 0;
    int fd = 0;
    int x = 0;
    do{
      fd = open("/dev/null",O_WRONLY);
      if( fd>=2 ) break;
      if( fd<0 ) x = errno;
    }while( nTry++ < 2 );
    if( fd<2 ){
      g.cgiOutput = 1;
      g.httpOut = stdout;
      g.fullHttpReply = !g.isHTTP;
      fossil_panic("file descriptor 2 is not open. (fd=%d, errno=%d)",
                   fd, x);
    }
  }
#endif
  g.zCmdName = zCmdName;
  rc = dispatch_name_search(zCmdName, CMDFLAG_COMMAND|CMDFLAG_PREFIX, &pCmd);
  if( rc==1 && g.argc==2 && file_is_repository(g.argv[1]) ){
    /* If the command-line is "fossil ABC" and "ABC" is no a valid command,
    ** but "ABC" is the name of a repository file, make the command be
    ** "fossil ui ABC" instead.
    */
    char **zNewArgv = fossil_malloc( sizeof(char*)*4 );
    zNewArgv[0] = g.argv[0];
    zNewArgv[1] = "ui";
    zNewArgv[2] = g.argv[1];
    zNewArgv[3] = 0;
    g.argc = 3;
    g.argv = zNewArgv;
    g.zCmdName = zCmdName = "ui";
    rc = dispatch_name_search(zCmdName, CMDFLAG_COMMAND|CMDFLAG_PREFIX, &pCmd);
  }
  if( rc==1 ){
#ifdef FOSSIL_ENABLE_TH1_HOOKS
    if( !g.isHTTP && !g.fNoThHook ){
      rc = Th_CommandHook(zCmdName, 0);
    }else{
      rc = TH_OK;
    }
    if( rc==TH_OK || rc==TH_RETURN || rc==TH_CONTINUE ){
      if( rc==TH_OK || rc==TH_RETURN ){
#endif
        fossil_fatal("%s: unknown command: %s\n"
                     "%s: use \"help\" for more information",
                     g.argv[0], zCmdName, g.argv[0]);
#ifdef FOSSIL_ENABLE_TH1_HOOKS
      }
      if( !g.isHTTP && !g.fNoThHook && (rc==TH_OK || rc==TH_CONTINUE) ){
        Th_CommandNotify(zCmdName, 0);
      }
    }
    fossil_exit(0);
#endif
  }else if( rc==2 ){
    Blob couldbe;
    blob_init(&couldbe,0,0);
    dispatch_matching_names(zCmdName, CMDFLAG_COMMAND, &couldbe);
    fossil_print("%s: ambiguous command prefix: %s\n"
                 "%s: could be any of:%s\n"
                 "%s: use \"help\" for more information\n",
                 g.argv[0], zCmdName, g.argv[0], blob_str(&couldbe), g.argv[0]);
    fossil_exit(1);
  }
#ifdef FOSSIL_ENABLE_JSON
  else if( rc==0 && strcmp("json",pCmd->zName)==0 ){
    g.json.isJsonMode = 1;
  }else{
    assert(!g.json.isJsonMode && "JSON-mode misconfiguration.");
  }
#endif
  atexit( fossil_atexit );
#ifdef FOSSIL_ENABLE_TH1_HOOKS
  /*
  ** The TH1 return codes from the hook will be handled as follows:
  **
  ** TH_OK: The xFunc() and the TH1 notification will both be executed.
  **
  ** TH_ERROR: The xFunc() will be skipped, the TH1 notification will be
  **           skipped.  If the xFunc() is being hooked, the error message
  **           will be emitted.
  **
  ** TH_BREAK: The xFunc() and the TH1 notification will both be skipped.
  **
  ** TH_RETURN: The xFunc() will be executed, the TH1 notification will be
  **            skipped.
  **
  ** TH_CONTINUE: The xFunc() will be skipped, the TH1 notification will be
  **              executed.
  */
  if( !g.isHTTP && !g.fNoThHook ){
    rc = Th_CommandHook(pCmd->zName, pCmd->eCmdFlags);
  }else{
    rc = TH_OK;
  }
  if( rc==TH_OK || rc==TH_RETURN || rc==TH_CONTINUE ){
    if( rc==TH_OK || rc==TH_RETURN ){
#endif
      g.zPhase = pCmd->zName;
      pCmd->xFunc();
      g.zPhase = "shutdown";
#ifdef FOSSIL_ENABLE_TH1_HOOKS
    }
    if( !g.isHTTP && !g.fNoThHook && (rc==TH_OK || rc==TH_CONTINUE) ){
      Th_CommandNotify(pCmd->zName, pCmd->eCmdFlags);
    }
  }
#endif
  fossil_exit(0);
  /*NOT_REACHED*/
  return 0;
}

/*
** Print a usage comment and quit
*/
void usage(const char *zFormat){
  fprintf(stderr, "Usage: %s %s %s\n", g.argv[0], g.argv[1], zFormat);
  fossil_fatal("Usage: %s %s %s", g.argv[0], g.argv[1], zFormat);
  exit(1);
}

/*
** Remove n elements from g.argv beginning with the i-th element.
*/
void remove_from_argv(int i, int n){
static void remove_from_argv(int i, int n){
  int j;
  for(j=i+n; j<g.argc; i++, j++){
    g.argv[i] = g.argv[j];
  }
  g.argc = i;
}


/*
** Look for a command-line option.  If present, return a pointer.
** Return NULL if missing.
** Look for a command-line option.  If present, remove it from the
** argument list and return a pointer to either the flag's name (if
** hasArg==0), sans leading - or --, or its value (if hasArg==1).
** Return NULL if the flag is not found.
**
** zLong is the "long" form of the flag and zShort is the
** short/abbreviated form (typically a single letter, but it may be
** longer). zLong must not be NULL, but zShort may be.
**
** hasArg==0 means the option is a flag.  It is either present or not.
** hasArg==1 means the option has an argument.  Return a pointer to the
** argument.
** hasArg==1 means the option has an argument, in which case a pointer
** to the argument's value is returned. For zLong, a flag value (if
** hasValue==1) may either be in the form (--flag=value) or (--flag
** value). For zShort, only the latter form is accepted.
**
** If a standalone argument of "--" is encountered in the argument
** list while searching for the given flag(s), this routine stops
** searching and NULL is returned.
*/
const char *find_option(const char *zLong, const char *zShort, int hasArg){
  int i;
  int nLong;
  const char *zReturn = 0;
  assert( hasArg==0 || hasArg==1 );
  nLong = strlen(zLong);
  for(i=2; i<g.argc; i++){
  for(i=1; i<g.argc; i++){
    char *z;
    if (i+hasArg >= g.argc) break;
    z = g.argv[i];
    if( z[0]!='-' ) continue;
    z++;
    if( z[0]=='-' ){
      if( z[1]==0 ){
        remove_from_argv(i, 1);
        /* Stop processing at "--" without consuming it.
           verify_all_options() will consume this flag. */
        break;
      }
      z++;
    }
    if( strncmp(z,zLong,nLong)==0 ){
      if( hasArg && z[nLong]=='=' ){
        zReturn = &z[nLong+1];
        remove_from_argv(i, 1);
        break;
      }else if( z[nLong]==0 ){
        if( i+hasArg >= g.argc ) break;
        zReturn = g.argv[i+hasArg];
        remove_from_argv(i, 1+hasArg);
        break;
      }
    }else if( zShort!=0 && strcmp(z,zShort)==0 ){
    }else if( fossil_strcmp(z,zShort)==0 ){
      if( i+hasArg >= g.argc ) break;
      zReturn = g.argv[i+hasArg];
      remove_from_argv(i, 1+hasArg);
      break;
    }
  }
  return zReturn;
}

/* Return true if zOption exists in the command-line arguments,
** but do not remove it from the list or otherwise process it.
*/
int has_option(const char *zOption){
  int i;
  int n = (int)strlen(zOption);
  for(i=1; i<g.argc; i++){
    char *z = g.argv[i];
    if( z[0]!='-' ) continue;
    z++;
    if( z[0]=='-' ){
      if( z[1]==0 ){
        /* Stop processing at "--" */
        break;
      }
      z++;
    }
    if( strncmp(z,zOption,n)==0 && (z[n]==0 || z[n]=='=') ) return 1;
  }
  return 0;
}

/*
** Look for multiple occurrences of a command-line option with the
** corresponding argument.
**
** Return a malloc allocated array of pointers to the arguments.
**
** pnUsedArgs is used to store the number of matched arguments.
**
** Caller is responsible for freeing allocated memory by passing the
** head of the array (not each entry) to fossil_free(). (The
** individual entries have the same lifetime as values returned from
** find_option().)
*/
const char **find_repeatable_option(
  const char *zLong,
  const char *zShort,
  int *pnUsedArgs
){
  const char *zOption;
  const char **pzArgs = 0;
  int nAllocArgs = 0;
  int nUsedArgs = 0;

  while( (zOption = find_option(zLong, zShort, 1))!=0 ){
    if( pzArgs==0 && nAllocArgs==0 ){
      nAllocArgs = 1;
      pzArgs = fossil_malloc( nAllocArgs*sizeof(pzArgs[0]) );
    }else if( nAllocArgs<=nUsedArgs ){
      nAllocArgs = nAllocArgs*2;
      pzArgs = fossil_realloc( (void *)pzArgs, nAllocArgs*sizeof(pzArgs[0]) );
    }
    pzArgs[nUsedArgs++] = zOption;
  }
  *pnUsedArgs = nUsedArgs;
  return pzArgs;
}

/*
** Look for a repository command-line option.  If present, [re-]cache it in
** the global state and return the new pointer, freeing any previous value.
** If absent and there is no cached value, return NULL.
*/
const char *find_repository_option(){
  const char *zRepository = find_option("repository", "R", 1);
  if( zRepository ){
    if( g.zRepositoryOption ) fossil_free(g.zRepositoryOption);
    g.zRepositoryOption = mprintf("%s", zRepository);
  }
  return g.zRepositoryOption;
}

/*
** Verify that there are no unprocessed command-line options.  If
** Any remaining command-line argument begins with "-" print
** an error message and quit.
**
** Exception: if "--" is encountered, it is consumed from the argument
** list and this function immediately returns. The effect is to treat
** all arguments after "--" as non-flags (conventionally used to
** enable passing-in of filenames which start with a dash).
**
** This function must normally only be called one time per app
** invokation. The exception is commands which process their
** arguments, call this to confirm that there are no extraneous flags,
** then modify the arguments list for forwarding to another
** (sub)command (which itself will call this to confirm its own
** arguments).
*/
void verify_all_options(void){
  int i;
  for(i=1; i<g.argc; i++){
    const char * arg = g.argv[i];
    if( g.argv[i][0]=='-' ){
      fossil_fatal("unrecognized command-line option, or missing argument: %s", g.argv[i]);
    }
  }
}

    if( arg[0]=='-' ){
      if( arg[1]=='-' && arg[2]==0 ){
        /* Remove "--" from the list and treat all following
        ** arguments as non-flags. */
        remove_from_argv(i, 1);
        break;
      }else if( arg[1]!=0 ){
        fossil_fatal(
          "unrecognized command-line option or missing argument: %s",
          arg);
      }
    }
  }
}

/*
** Print a list of words in multiple columns.
** This function returns a human readable version string.
*/
static void multi_column_list(const char **azWord, int nWord){
const char *get_version(){
  int i, j, len;
  int mxLen = 0;
  static const char version[] = RELEASE_VERSION " " MANIFEST_VERSION " "
                                MANIFEST_DATE " UTC";
  return version;
  int nCol;
  int nRow;
  for(i=0; i<nWord; i++){
    len = strlen(azWord[i]);
    if( len>mxLen ) mxLen = len;
  }
  nCol = 80/(mxLen+2);
}

  if( nCol==0 ) nCol = 1;
  nRow = (nWord + nCol - 1)/nCol;
  for(i=0; i<nRow; i++){
    const char *zSpacer = "";
    for(j=i; j<nWord; j+=nRow){
      printf("%s%-*s", zSpacer, mxLen, azWord[j]);
      zSpacer = "  ";
    }
    printf("\n");
  }
/*
** This function populates a blob with version information.  It is used by
** the "version" command and "test-version" web page.  It assumes the blob
** passed to it is uninitialized; otherwise, it will leak memory.
*/
void fossil_version_blob(
  Blob *pOut,                 /* Write the manifest here */
  int eVerbose                /* 0: brief.  1: more text,  2: lots of text */
){
#if defined(FOSSIL_ENABLE_TCL)
  int rc;
  const char *zRc;
#endif
  Stmt q;
  size_t pageSize = 0;
  blob_zero(pOut);
  blob_appendf(pOut, "This is fossil version %s\n", get_version());
  if( eVerbose<=0 ) return;

  blob_appendf(pOut, "Compiled on %s %s using %s (%d-bit)\n",
               __DATE__, __TIME__, COMPILER_NAME, sizeof(void*)*8);
  blob_appendf(pOut, "SQLite %s %.30s\n", sqlite3_libversion(),
               sqlite3_sourceid());
#if defined(FOSSIL_ENABLE_SSL)
  blob_appendf(pOut, "SSL (%s)\n", SSLeay_version(SSLEAY_VERSION));
#endif
  blob_appendf(pOut, "zlib %s, loaded %s\n", ZLIB_VERSION, zlibVersion());
#if defined(FOSSIL_HAVE_FUSEFS)
  blob_appendf(pOut, "libfuse %s, loaded %s\n", fusefs_inc_version(),
               fusefs_lib_version());
#endif
#if defined(FOSSIL_ENABLE_TCL)
  Th_FossilInit(TH_INIT_DEFAULT | TH_INIT_FORCE_TCL);
  rc = Th_Eval(g.interp, 0, "tclInvoke info patchlevel", -1);
  zRc = Th_ReturnCodeName(rc, 0);
  blob_appendf(pOut, "TCL (Tcl %s, loaded %s: %s)\n",
    TCL_PATCH_LEVEL, zRc, Th_GetResult(g.interp, 0)
  );
#endif
  if( eVerbose<=1 ) return;

}

  blob_appendf(pOut, "Schema version %s\n", AUX_SCHEMA_MAX);
  fossil_get_page_size(&pageSize);
  blob_appendf(pOut, "Detected memory page size is %lu bytes\n",
               (unsigned long)pageSize);
#if FOSSIL_HARDENED_SHA1
  blob_appendf(pOut, "hardened-SHA1 by Marc Stevens and Dan Shumow\n");
#endif
#if defined(FOSSIL_DEBUG)
/*
** COM -off- MAND: commands
  blob_append(pOut, "FOSSIL_DEBUG\n", -1);
#endif
**
** Usage: %fossil commands
** List all supported commands.
#if defined(FOSSIL_ENABLE_DELTA_CKSUM_TEST)
  blob_append(pOut, "FOSSIL_ENABLE_DELTA_CKSUM_TEST\n", -1);
#endif
*/
void cmd_cmd_list(void){
  int i, nCmd;
  const char *aCmd[count(aCommand)];
  for(i=nCmd=0; i<count(aCommand); i++){
    if( strncmp(aCommand[i].zName,"test",4)==0 ) continue;
    /* if( strcmp(aCommand[i].zName, g.argv[1])==0 ) continue; */
    aCmd[nCmd++] = aCommand[i].zName;
  blob_append(pOut, "FOSSIL_ENABLE_LEGACY_MV_RM\n", -1);
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
  blob_append(pOut, "FOSSIL_ENABLE_EXEC_REL_PATHS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TH1_DOCS)
  blob_append(pOut, "FOSSIL_ENABLE_TH1_DOCS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TH1_HOOKS)
  blob_append(pOut, "FOSSIL_ENABLE_TH1_HOOKS\n", -1);
#endif
  }
  multi_column_list(aCmd, nCmd);
}
#if defined(USE_TCL_STUBS)
  blob_append(pOut, "USE_TCL_STUBS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TCL_STUBS)
  blob_append(pOut, "FOSSIL_TCL_STUBS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
  blob_append(pOut, "FOSSIL_ENABLE_TCL_PRIVATE_STUBS\n", -1);
#endif
#if defined(FOSSIL_ENABLE_JSON)
  blob_appendf(pOut, "JSON (API %s)\n", FOSSIL_JSON_API_VERSION);
#endif
  blob_append(pOut, "MARKDOWN\n", -1);
#if defined(BROKEN_MINGW_CMDLINE)
  blob_append(pOut, "MBCS_COMMAND_LINE\n", -1);
#else
  blob_append(pOut, "UNICODE_COMMAND_LINE\n", -1);
#endif
#if defined(FOSSIL_DYNAMIC_BUILD)
  blob_append(pOut, "FOSSIL_DYNAMIC_BUILD\n", -1);
#else
  blob_append(pOut, "FOSSIL_STATIC_BUILD\n", -1);
#endif
#if defined(HAVE_PLEDGE)
  blob_append(pOut, "HAVE_PLEDGE\n", -1);
#endif
#if defined(USE_MMAN_H)
  blob_append(pOut, "USE_MMAN_H\n", -1);
#endif
#if defined(USE_SEE)
  blob_appendf(pOut, "USE_SEE (%s)\n",
               db_have_saved_encryption_key() ? "SET" : "UNSET");
#endif
#if defined(FOSSIL_ALLOW_OUT_OF_ORDER_DATES)
  blob_append(pOut, "FOSSIL_ALLOW_OUT_OF_ORDER_DATES\n");
#endif

  if( g.db==0 ) sqlite3_open(":memory:", &g.db);
  db_prepare(&q,
     "pragma compile_options");
  while( db_step(&q)==SQLITE_ROW ){
    const char *text = db_column_text(&q, 0);
    if( strncmp(text, "COMPILER", 8) ){
      blob_appendf(pOut, "SQLITE_%s\n", text);
    }
  }
  db_finalize(&q);
}

/*
** COMMAND: test-commands
**
** This function returns the user-agent string for Fossil, for
** use in HTTP(S) requests.
** Usage: %fossil test-commands
**
** List all commands used for testing and debugging.
*/
void cmd_test_cmd_list(void){
  int i, nCmd;
  const char *aCmd[count(aCommand)];
const char *get_user_agent(){
  for(i=nCmd=0; i<count(aCommand); i++){
    if( strncmp(aCommand[i].zName,"test",4)!=0 ) continue;
    /* if( strcmp(aCommand[i].zName, g.argv[1])==0 ) continue; */
    aCmd[nCmd++] = aCommand[i].zName;
  }
  multi_column_list(aCmd, nCmd);
  static const char version[] = "Fossil/" RELEASE_VERSION " (" MANIFEST_DATE
                                " " MANIFEST_VERSION ")";
  return version;
}


/*
** COMMAND: version
**
** Usage: %fossil version
** Usage: %fossil version ?-v|--verbose?
**
** Print the source code version number for the fossil executable.
** If the verbose option is specified, additional details will
** be output about what optional features this binary was compiled
** with.
**
** Repeat the -v option or use -vv for even more information.
*/
void version_cmd(void){
  Blob versionInfo;
  int verboseFlag = 0;
  printf("This is fossil version " MANIFEST_VERSION " " MANIFEST_DATE " UTC\n");

  while( find_option("verbose","v",0)!=0 ) verboseFlag++;
  while( find_option("vv",0,0)!=0 )        verboseFlag += 2;

  /* We should be done with options.. */
  verify_all_options();
  fossil_version_blob(&versionInfo, verboseFlag);
  fossil_print("%s", blob_str(&versionInfo));
}


/*
** WEBPAGE: version
** COMMAND: help
**
** Show the version information for Fossil.
**
** Usage: %fossil help COMMAND
** Query parameters:
**
** Display information on how to use COMMAND
**    verbose       Show details
*/
void help_cmd(void){
void test_version_page(void){
  int rc, idx;
  const char *z;
  if( g.argc!=3 ){
    printf("Usage: %s help COMMAND.\nAvailable COMMANDs:\n", g.argv[0]);
    cmd_cmd_list();
    version_cmd();
  Blob versionInfo;
    return;
  }
  rc = name_search(g.argv[2], aCommand, count(aCommand), &idx);
  if( rc==1 ){
    fossil_fatal("unknown command: %s", g.argv[2]);
  }else if( rc==2 ){
  int verboseFlag;
    fossil_fatal("ambiguous command prefix: %s", g.argv[2]);
  }

  z = aCmdHelp[idx];
  if( z==0 ){
    fossil_fatal("no help available for the %s command",
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  verboseFlag = P("verbose")!=0 ? 2 : 1;
  style_header("Version Information");
  style_submenu_element("Stat", "stat");
  fossil_version_blob(&versionInfo, verboseFlag);
       aCommand[idx].zName);
  }
  while( *z ){
    if( *z=='%' && strncmp(z, "%fossil", 7)==0 ){
      printf("%s", g.argv[0]);
      z += 7;
    }else{
  @ <pre>
  @ %h(blob_str(&versionInfo))
  @ </pre>
      putchar(*z);
      z++;
    }
  }
  style_finish_page();
}

  putchar('\n');
}

/*
** Set the g.zBaseURL value to the full URL for the toplevel of
** the fossil tree.  Set g.zTop to g.zBaseURL without the
** leading "http://" and the host and port.
**
** The g.zBaseURL is normally set based on HTTP_HOST and SCRIPT_NAME
** environment variables.  However, if zAltBase is not NULL then it
** is the argument to the --baseurl option command-line option and
** g.zBaseURL and g.zTop is set from that instead.
*/
void set_base_url(void){
void set_base_url(const char *zAltBase){
  int i;
  const char *zHost = PD("HTTP_HOST","");
  const char *zMode = PD("HTTPS","off");
  const char *zCur = PD("SCRIPT_NAME","/");
  const char *zHost;
  const char *zMode;
  const char *zCur;

  if( g.zBaseURL!=0 ) return;
  if( zAltBase ){
    int i, n, c;
    g.zTop = g.zBaseURL = mprintf("%s", zAltBase);
  i = strlen(zCur);
  while( i>0 && zCur[i-1]=='/' ) i--;
  if( strcmp(zMode,"on")==0 ){
    g.zBaseURL = mprintf("https://%s%.*s", zHost, i, zCur);
    g.zTop = &g.zBaseURL[8+strlen(zHost)];
    i = (int)strlen(g.zBaseURL);
    while( i>3 && g.zBaseURL[i-1]=='/' ){ i--; }
    g.zBaseURL[i] = 0;
    if( strncmp(g.zTop, "http://", 7)==0 ){
      /* it is HTTP, replace prefix with HTTPS. */
      g.zHttpsURL = mprintf("https://%s", &g.zTop[7]);
    }else if( strncmp(g.zTop, "https://", 8)==0 ){
      /* it is already HTTPS, use it. */
      g.zHttpsURL = mprintf("%s", g.zTop);
    }else{
      fossil_fatal("argument to --baseurl should be 'http://host/path'"
                   " or 'https://host/path'");
    }
    for(i=n=0; (c = g.zTop[i])!=0; i++){
      if( c=='/' ){
        n++;
        if( n==3 ){
          g.zTop += i;
          break;
        }
      }
    }
    if( n==2 ) g.zTop = "";
    if( g.zTop==g.zBaseURL ){
      fossil_fatal("argument to --baseurl should be 'http://host/path'"
                   " or 'https://host/path'");
    }
    if( g.zTop[1]==0 ) g.zTop++;
  }else{
    char *z;
    zMode = PD("HTTPS","off");
    zHost = PD("HTTP_HOST","");
    z = fossil_strdup(zHost);
    for(i=0; z[i]; i++){
      if( z[i]<='Z' && z[i]>='A' ) z[i] += 'a' - 'A';
    }
    if( fossil_strcmp(zMode,"on")==0 ){
      /* Remove trailing ":443" from the HOST, if any */
      if( i>4 && z[i-1]=='3' && z[i-2]=='4' && z[i-3]=='4' && z[i-4]==':' ){
        i -= 4;
      }
    }else{
      /* Remove trailing ":80" from the HOST */
      if( i>3 && z[i-1]=='0' && z[i-2]=='8' && z[i-3]==':' ) i -= 3;
    }
    if( i && z[i-1]=='.' ) i--;
    z[i] = 0;
    zCur = PD("SCRIPT_NAME","/");
    i = strlen(zCur);
    while( i>0 && zCur[i-1]=='/' ) i--;
    if( fossil_stricmp(zMode,"on")==0 ){
      g.zBaseURL = mprintf("https://%s%.*s", z, i, zCur);
      g.zTop = &g.zBaseURL[8+strlen(z)];
      g.zHttpsURL = g.zBaseURL;
    }else{
    g.zBaseURL = mprintf("http://%s%.*s", zHost, i, zCur);
    g.zTop = &g.zBaseURL[7+strlen(zHost)];
  }
}
      g.zBaseURL = mprintf("http://%s%.*s", z, i, zCur);
      g.zTop = &g.zBaseURL[7+strlen(z)];
      g.zHttpsURL = mprintf("https://%s%.*s", z, i, zCur);
    }
    fossil_free(z);
  }

  /* Try to record the base URL as a CONFIG table entry with a name
  ** of the form:  "baseurl:BASE".  This keeps a record of how the
  ** the repository is used as a server, to help in answering questions
  ** like "where is the CGI script that references this repository?"
  **
  ** This is just a logging hint.  So don't worry if it cannot be done.
  ** Don't try this if the repository database is not writable, for
  ** example.
  **
  ** If g.useLocalauth is set, that (probably) means that we are running
  ** "fossil ui" and there is no point in logging those cases either.
  */
  if( db_is_writeable("repository") && !g.useLocalauth ){
    int nBase = (int)strlen(g.zBaseURL);
    char *zBase = g.zBaseURL;
    if( g.nExtraURL>0 && g.nExtraURL<nBase-6 ){
      zBase = fossil_strndup(g.zBaseURL, nBase - g.nExtraURL);
    }
    db_unprotect(PROTECT_CONFIG);
    if( !db_exists("SELECT 1 FROM config WHERE name='baseurl:%q'", zBase)){
      db_multi_exec("INSERT INTO config(name,value,mtime)"
                    "VALUES('baseurl:%q',1,now())", zBase);
    }else{
      db_optional_sql("repository",
           "REPLACE INTO config(name,value,mtime)"
           "VALUES('baseurl:%q',1,now())", zBase
      );
    }
    db_protect_pop();
    if( zBase!=g.zBaseURL ) fossil_free(zBase);
  }
}

/*
** Send an HTTP redirect back to the designated Index Page.
*/
void fossil_redirect_home(void){
  cgi_redirectf("%s%s", g.zBaseURL, db_get("index-page", "/index"));
NORETURN void fossil_redirect_home(void){
  /* In order for ?skin=... to work when visiting the site from
  ** a typical external link, we have to process it here, as
  ** that parameter gets lost during the redirect. We "could"
  ** pass the whole query string along instead, but that seems
  ** unnecessary. */
  if(cgi_setup_query_string()>1){
    cookie_render();
  }
  cgi_redirectf("%R%s", db_get("index-page", "/index"));
}

/*
** If running as root, chroot to the directory containing the
** repository zRepo and then drop root privileges.  Return the
** new repository name.
**
** zRepo might be a directory itself.  In that case chroot into
** the directory zRepo.
** zRepo can be a directory.  If so and if the repo name was saved
** to g.zRepositoryName before we were called, we canonicalize the
** two paths and check that one is the prefix of the other, else you
** won't be able to open the repo inside the jail.  If it all works
** out, we return the "jailed" version of the repo name.
**
** Assume the user-id and group-id of the repository, or if zRepo
** is a directory, of that directory.
**
** The noJail flag means that the chroot jail is not entered.  But
** privileges are still lowered to that of the user-id and group-id
** of the repository file.
*/
static char *enter_chroot_jail(char *zRepo){
#if !defined(__MINGW32__)
static char *enter_chroot_jail(const char *zRepo, int noJail){
#if !defined(_WIN32)
  if( getuid()==0 ){
    int i;
    struct stat sStat;
    Blob dir;
    char *zDir;
    size_t nDir;
    if( g.db!=0 ){
      db_close(1);

    file_canonical_name(zRepo, &dir);
    }

    file_canonical_name(zRepo, &dir, 0);
    zDir = blob_str(&dir);
    nDir = blob_size(&dir);
    if( !noJail ){
    if( file_isdir(zDir)==1 ){
      chdir(zDir);
      chroot(zDir);
      zRepo = "/";
    }else{
      for(i=strlen(zDir)-1; i>0 && zDir[i]!='/'; i--){}
      if( zDir[i]!='/' ) fossil_panic("bad repository name: %s", zRepo);
      zDir[i] = 0;
      chdir(zDir);
      chroot(zDir);
      zDir[i] = '/';
      zRepo = &zDir[i];
      if( file_isdir(zDir, ExtFILE)==1 ){
        /* Translate the repository name to the new root */
        if( g.zRepositoryName ){
          Blob repo;
          file_canonical_name(g.zRepositoryName, &repo, 0);
          zRepo = blob_str(&repo);
          if( strncmp(zRepo, zDir, nDir)!=0 ){
            fossil_fatal("repo %s not under chroot dir %s", zRepo, zDir);
          }
          zRepo += nDir;
          if( *zRepo == '\0' ) zRepo = "/";
        }else {
          zRepo = "/";
        }
        /* If a unix socket is defined, try to translate its name into
        ** the new root so that it can be delete by atexit().  If unable,
        ** just zero out the socket name. */
        if( g.zSockName ){
          if( strncmp(g.zSockName, zDir, nDir)==0
           && g.zSockName[nDir]=='/'
          ){
            g.zSockName += nDir;
          }else{
            g.zSockName = 0;
          }
        }
        if( file_chdir(zDir, 1) ){
          fossil_panic("unable to chroot into %s", zDir);
        }
      }else{
        for(i=strlen(zDir)-1; i>0 && zDir[i]!='/'; i--){}
        if( zDir[i]!='/' ) fossil_fatal("bad repository name: %s", zRepo);
        if( i>0 ){
          zDir[i] = 0;
          if( file_chdir(zDir, 1) ){
            fossil_fatal("unable to chroot into %s", zDir);
          }
          zDir[i] = '/';
        }
        zRepo = &zDir[i];
      }
    }
    if( stat(zRepo, &sStat)!=0 ){
      fossil_fatal("cannot stat() repository: %s", zRepo);
    }
    setgid(sStat.st_gid);
    setuid(sStat.st_uid);
    if( g.db!=0 ){
    i = setgid(sStat.st_gid);
    i = i || setuid(sStat.st_uid);
    if(i){
      fossil_fatal("setgid/uid() failed with errno %d", errno);
    }
    if( g.db==0 && file_isfile(zRepo, ExtFILE) ){
      db_close();
      db_open_repository(zRepo);
    }
  }
#endif
  return (char*)zRepo;  /* no longer const: always reassigned from blob_str() */
}

/*
** Called whenever a crash is encountered while processing a webpage.
*/
void sigsegv_handler(int x){
#if HAVE_BACKTRACE
  void *array[20];
  size_t size;
  char **strings;
  size_t i;
  Blob out;
  size = backtrace(array, sizeof(array)/sizeof(array[0]));
  strings = backtrace_symbols(array, size);
  blob_init(&out, 0, 0);
  blob_appendf(&out, "Segfault during %s in fossil %s",
               g.zPhase, MANIFEST_VERSION);
  for(i=0; i<size; i++){
    size_t len;
    const char *z = strings[i];
    if( i==0 ) blob_appendf(&out, "\nBacktrace:");
    len = strlen(strings[i]);
    if( z[0]=='[' && z[len-1]==']' ){
      blob_appendf(&out, " %.*s", (int)(len-2), &z[1]);
    }else{
      blob_appendf(&out, " %s", z);
    }
  }
  fossil_panic("%s", blob_str(&out));
#else
  fossil_panic("Segfault during %s in fossil %s",
               g.zPhase, MANIFEST_VERSION);
#endif
  exit(1);
}

/*
** Called if a server gets a SIGPIPE.  This often happens when a client
** webbrowser opens a connection but never sends the HTTP request
*/
void sigpipe_handler(int x){
#ifndef _WIN32
  if( g.fAnyTrace ){
    fprintf(stderr,"/***** sigpipe received by subprocess %d ****\n", getpid());
  }
#endif
  g.zPhase = "sigpipe shutdown";
  db_panic_close();
  exit(1);
}

/*
** Return true if it is appropriate to redirect requests to HTTPS.
**
** Redirect to https is appropriate if all of the above are true:
**    (1) The redirect-to-https flag has a valud of iLevel or greater.
**    (2) The current connection is http, not https or ssh
**    (3) The sslNotAvailable flag is clear
*/
int fossil_wants_https(int iLevel){
  if( g.sslNotAvailable ) return 0;
  if( db_get_int("redirect-to-https",0)<iLevel ) return 0;
  if( P("HTTPS")!=0 ) return 0;
  return zRepo;
  return 1;
}

/*
** Redirect to the equivalent HTTPS request if the current connection is
** insecure and if the redirect-to-https flag greater than or equal to
** iLevel.  iLevel is 1 for /login pages and 2 for every other page.
*/
int fossil_redirect_to_https_if_needed(int iLevel){
  if( fossil_wants_https(iLevel) ){
    const char *zQS = P("QUERY_STRING");
    char *zURL;
    if( zQS==0 || zQS[0]==0 ){
      zURL = mprintf("%s%T", g.zHttpsURL, P("PATH_INFO"));
    }else if( zQS[0]!=0 ){
      zURL = mprintf("%s%T?%s", g.zHttpsURL, P("PATH_INFO"), zQS);
    }
    cgi_redirect_with_status(zURL, 301, "Moved Permanently");
    return 1;
  }
  return 0;
}

/*
** Send a 404 Not Found reply
*/
void fossil_not_found_page(void){
#ifdef FOSSIL_ENABLE_JSON
  if(g.json.isJsonMode){
    json_err(FSL_JSON_E_RESOURCE_NOT_FOUND,NULL,1);
    return;
  }
#endif
  @ <html><head>
  @ <meta name="viewport" \
  @ content="width=device-width, initial-scale=1.0">
  @ </head><body>
  @ <h1>Not Found</h1>
  @ </body>
  cgi_set_status(404, "Not Found");
  cgi_reply();
}

/*
** Preconditions:
**
**  * Environment variables are set up according to the CGI standard.
**
** If the repository is known, it has already been opened.  If unknown,
** then g.zRepositoryName holds the directory that contains the repository
** and the actual repository is taken from the first element of PATH_INFO.
** 
**
** Process the webpage specified by the PATH_INFO or REQUEST_URI
** environment variable.
**
** If the repository is not known, then a search is done through the
** file hierarchy rooted at g.zRepositoryName for a suitable repository
** with a name of $prefix.fossil, where $prefix is any prefix of PATH_INFO.
** Or, if an ordinary file named $prefix is found, and $prefix matches
** pFileGlob and $prefix does not match "*.fossil*" and the mimetype of
** $prefix can be determined from its suffix, then the file $prefix is
** returned as static text.
**
** If no suitable webpage is found, try to redirect to zNotFound.
*/
static void process_one_web_page(const char *zNotFound){
  const char *zPathInfo;
static void process_one_web_page(
  const char *zNotFound,      /* Redirect here on a 404 if not NULL */
  Glob *pFileGlob,            /* Deliver static files matching */
  int allowRepoList           /* Send repo list for "/" URL */
){
  const char *zPathInfo = PD("PATH_INFO", "");
  char *zPath = NULL;
  int idx;
  int i;
  int i;
  const CmdOrPage *pCmd = 0;
  const char *zBase = g.zRepositoryName;
  int isReadonly = 0;

  g.zPhase = "process_one_web_page";
#if !defined(_WIN32)
  signal(SIGSEGV, sigsegv_handler);
#endif

  /* Decode %HH escapes in PATHINFO */
  if( strchr(zPathInfo,'%') ){
    char *z = fossil_strdup(zPathInfo);
    dehttpize(z);
    zPathInfo = z;
  }

  /* Handle universal query parameters */
  if( PB("utc") ){
    g.fTimeFormat = 1;
  }else if( PB("localtime") ){
    g.fTimeFormat = 2;
  }
#ifdef FOSSIL_ENABLE_JSON
  /*
  ** Ensure that JSON mode is set up if we're visiting /json, to allow
  ** us to customize some following behaviour (error handling and only
  ** process JSON-mode POST data if we're actually in a /json
  ** page). This is normally set up before this routine is called, but
  ** it looks like the ssh_request_loop() approach to dispatching
  ** might bypass that.
  */
  if( g.json.isJsonMode==0 && json_request_is_json_api(zPathInfo)!=0 ){
    g.json.isJsonMode = 1;
    json_bootstrap_early();
  }
#endif
  /* If the repository has not been opened already, then find the
  ** repository based on the first element of PATH_INFO and open it.
  */
  zPathInfo = P("PATH_INFO");
  if( !g.repositoryOpen ){
    char zBuf[24];
    const char *zRepoExt = ".fossil";
    char *zRepo;
    const char *zOldScript = PD("SCRIPT_NAME", "");
    char *zNewScript;
    int j, k;
    char *zRepo;               /* Candidate repository name */
    char *zToFree = 0;         /* Malloced memory that needs to be freed */
    const char *zCleanRepo;    /* zRepo with surplus leading "/" removed */
    const char *zOldScript = PD("SCRIPT_NAME", "");  /* Original SCRIPT_NAME */
    char *zNewScript;          /* Revised SCRIPT_NAME after processing */
    int j, k;                  /* Loop variables */
    i64 szFile;                /* File size of the candidate repository */

    i = 1;
    while( zPathInfo[i] && zPathInfo[i]!='/' ){ i++; }
    zRepo = mprintf("%s%.*s.fossil",g.zRepositoryName,i,zPathInfo);

    /* To avoid mischief, make sure the repository basename contains no
    ** characters other than alphanumerics, "-", and "_".
    i = zPathInfo[0]!=0;
    if( fossil_strcmp(g.zRepositoryName, "/")==0 ){
      zBase++;
#if defined(_WIN32) || defined(__CYGWIN__)
      if( sqlite3_strglob("/[a-zA-Z]:/*", zPathInfo)==0 ) i = 4;
#endif
    }
    while( 1 ){
      size_t nBase = strlen(zBase);
      while( zPathInfo[i] && zPathInfo[i]!='/' ){ i++; }

      /* The candidate repository name is some prefix of the PATH_INFO
      ** with ".fossil" appended */
      zRepo = zToFree = mprintf("%s%.*s%s",zBase,i,zPathInfo,zRepoExt);
      if( g.fHttpTrace ){
        @ <!-- Looking for repository named "%h(zRepo)" -->
        fprintf(stderr, "# looking for repository named \"%s\"\n", zRepo);
      }


      /* Restrictions on the URI for security:
      **
      **    1.  Reject characters that are not ASCII alphanumerics, 
      **        "-", "_", ".", "/", or unicode (above ASCII).
      **        In other words:  No ASCII punctuation or control characters
      **        other than "-", "_", "." and "/".
      **    2.  Exception to rule 1: Allow /X:/ where X is any ASCII 
      **        alphabetic character at the beginning of the name on windows.
      **    3.  "-" may not occur immediately after "/"
      **    4.  "." may not be adjacent to another "." or to "/"
      **
      ** Any character does not satisfy these constraints a Not Found
      ** error is returned.
      */  
      szFile = 0;
      for(j=nBase+1, k=0; zRepo[j] && k<i-1; j++, k++){
        char c = zRepo[j];
        if( c>='a' && c<='z' ) continue;
        if( c>='A' && c<='Z' ) continue;
        if( c>='0' && c<='9' ) continue;
        if( (c&0x80)==0x80 ) continue;
#if defined(_WIN32) || defined(__CYGWIN__)
        /* Allow names to begin with "/X:/" on windows */
        if( c==':' && j==2 && sqlite3_strglob("/[a-zA-Z]:/*", zRepo)==0 ){
          continue;
        }
#endif
        if( c=='/' ) continue;
        if( c=='_' ) continue;
        if( c=='-' && zRepo[j-1]!='/' ) continue;
        if( c=='.'
         && zRepo[j-1]!='.' && zRepo[j-1]!='/'
         && zRepo[j+1]!='.' && zRepo[j+1]!='/'
        ){
          continue;
        }
        if( c=='.' && g.fAllowACME && j==(int)nBase+1
         && strncmp(&zRepo[j-1],"/.well-known/",12)==0
        ){
          /* We allow .well-known as the top-level directory for ACME */
          continue;
        }
        /* If we reach this point, it means that the request URI contains
        ** an illegal character or character combination.  Provoke a
    */
    for(j=strlen(g.zRepositoryName)+1, k=0; k<i-1; j++, k++){
      if( !isalnum(zRepo[j]) && zRepo[j]!='-' ) zRepo[j] = '_';
    }
    if( zRepo[0]=='/' && zRepo[1]=='/' ) zRepo++;

    if( file_size(zRepo)<1024 ){
      if( zNotFound ){
        cgi_redirect(zNotFound);
      }else{
        ** "Not Found" error. */
        szFile = 1;
        if( g.fHttpTrace ){
          @ <!-- Unsafe pathname rejected: "%h(zRepo)" -->
          fprintf(stderr, "# unsafe pathname rejected: %s\n", zRepo);
        }
        break;
      }

      /* Check to see if a file name zRepo exists.  If a file named zRepo
      ** does not exist, szFile will become -1.  If the file does exist,
      ** then szFile will become zero (for an empty file) or positive.
      ** Special case:  Assume any file with a basename of ".fossil" does
      ** not exist.
      */
      zCleanRepo = file_cleanup_fullpath(zRepo);
      if( szFile==0 && sqlite3_strglob("*/.fossil",zRepo)!=0 ){
        szFile = file_size(zCleanRepo, ExtFILE);
        if( g.fHttpTrace ){
          sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", szFile);
          @ <!-- file_size(%h(zCleanRepo)) is %s(zBuf) -->
          fprintf(stderr, "# file_size(%s) = %s\n", zCleanRepo, zBuf);
        }
      }

      /* If no file named by zRepo exists, remove the added ".fossil" suffix
      ** and check to see if there is a file or directory with the same
      ** name as the raw PATH_INFO text.
      */
      if( szFile<0 && i>0 ){
        const char *zMimetype;
        assert( file_is_repository_extension(&zRepo[j]) );
        zRepo[j] = 0;  /* Remove the ".fossil" suffix */

        /* The PATH_INFO prefix seen so far is a valid directory.
        ** Continue the loop with the next element of the PATH_INFO */
        if( zPathInfo[i]=='/' && file_isdir(zCleanRepo, ExtFILE)==1 ){
          fossil_free(zToFree);
          i++;
          continue;
        }

        /* If zRepo is the name of an ordinary file that matches the
        ** "--file GLOB" pattern, then the CGI reply is the text of
        ** of the file.
        **
        ** For safety, do not allow any file whose name contains ".fossil"
        ** to be returned this way, to prevent complete repositories from
        ** being delivered accidently.  This is not intended to be a
        ** general-purpose web server.  The "--file GLOB" mechanism is
        ** designed to allow the delivery of a few static images or HTML
        ** pages.
        */
        if( pFileGlob!=0
         && file_isfile(zCleanRepo, ExtFILE)
         && glob_match(pFileGlob, file_cleanup_fullpath(zRepo+nBase))
         && !file_contains_repository_extension(zRepo)
         && (zMimetype = mimetype_from_name(zRepo))!=0
         && strcmp(zMimetype, "application/x-fossil-artifact")!=0
        ){
          Blob content;
          blob_read_from_file(&content, file_cleanup_fullpath(zRepo), ExtFILE);
          cgi_set_content_type(zMimetype);
          cgi_set_content(&content);
          cgi_reply();
          return;
        }

        /* In support of the ACME protocol, files under the .well-known/
        ** directory is always accepted.
        */
        if( g.fAllowACME
         && strncmp(&zRepo[nBase],"/.well-known/",12)==0
         && file_isfile(zCleanRepo, ExtFILE)
        ){
          Blob content;
          blob_read_from_file(&content, file_cleanup_fullpath(zRepo), ExtFILE);
          cgi_set_content_type(mimetype_from_name(zRepo));
          cgi_set_content(&content);
          cgi_reply();
          return;
        }
        zRepo[j] = '.';
      }

      /* If we reach this point, it means that the search of the PATH_INFO
      ** string is finished.  Either zRepo contains the name of the
      ** repository to be used, or else no repository could be found and
      ** some kind of error response is required.
      */
      if( szFile<1024 ){
#if USE_SEE
        if( strcmp(zRepoExt,".fossil")==0 ){
          fossil_free(zToFree);
          zRepoExt = ".efossil";
          continue;
        }
#endif
        set_base_url(0);
        if( (zPathInfo[0]==0 || strcmp(zPathInfo,"/")==0)
                  && allowRepoList
                  && repo_list_page() ){
          /* Will return a list of repositories */
        }else if( zNotFound ){
          cgi_redirect(zNotFound);
        }else{
        @ <h1>Not Found</h1>
        cgi_set_status(404, "not found");
        cgi_reply();
      }
      return;
    }
          fossil_not_found_page();
        }
        return;
      }
      break;
    }

    /* Add the repository name (without the ".fossil" suffix) to the end
    ** of SCRIPT_NAME and g.zTop and g.zBaseURL and remove the repository
    ** name from the beginning of PATH_INFO.
    */
    zNewScript = mprintf("%s%.*s", zOldScript, i, zPathInfo);
    if( g.zTop ) g.zTop = mprintf("%R%.*s", i, zPathInfo);
    if( g.zBaseURL ) g.zBaseURL = mprintf("%s%.*s", g.zBaseURL, i, zPathInfo);
    cgi_replace_parameter("PATH_INFO", &zPathInfo[i+1]);
    zPathInfo += i;
    cgi_replace_parameter("SCRIPT_NAME", zNewScript);
#if USE_SEE
    if( zPathInfo ){
      if( g.fHttpTrace ){
        sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", i);
        @ <!-- see_path_info(%s(zBuf)) is %h(zPathInfo) -->
        fprintf(stderr, "# see_path_info(%d) = %s\n", i, zPathInfo);
      }
      if( strcmp(zPathInfo,"/setseekey")==0
       && strcmp(zRepoExt,".efossil")==0
       && !db_have_saved_encryption_key() ){
        db_set_see_key_page();
        cgi_reply();
        fossil_exit(0);
      }
    }
#endif
    db_open_repository(zRepo);
    db_open_repository(file_cleanup_fullpath(zRepo));
    if( g.fHttpTrace ){
      @ <!-- repository: "%h(zRepo)" -->
      @ <!-- translated PATH_INFO: "%h(zPathInfo)" -->
      @ <!-- translated SCRIPT_NAME: "%h(zNewScript)" -->
      fprintf(stderr, 
      fprintf(stderr,
          "# repository: [%s]\n"
          "# new PATH_INFO = [%s]\n"
          "# new SCRIPT_NAME = [%s]\n",
          "# translated PATH_INFO = [%s]\n"
          "# translated SCRIPT_NAME = [%s]\n",
          zRepo, zPathInfo, zNewScript);
      if( g.zTop ){
        @ <!-- translated g.zTop: "%h(g.zTop)" -->
        fprintf(stderr, "# translated g.zTop = [%s]\n", g.zTop);
    }
  }

  /* Find the page that the user has requested, construct and deliver that
  ** page.
      }
      if( g.zBaseURL ){
        @ <!-- translated g.zBaseURL: "%h(g.zBaseURL)" -->
        fprintf(stderr, "# translated g.zBaseURL = [%s]\n", g.zBaseURL);
      }
    }
  }

  /* At this point, the appropriate repository database file will have
  ** been opened.
  */

  /*
  ** Check to see if the first term of PATH_INFO specifies an
  ** alternative skin.  This will be the case if the first term of
  ** PATH_INFO begins with "draftN/" where N is an integer between 1
  ** and 9. If so, activate the skin associated with that draft.
  */
  if( zPathInfo && strncmp(zPathInfo,"/draft",6)==0
   && zPathInfo[6]>='1' && zPathInfo[6]<='9'
   && (zPathInfo[7]=='/' || zPathInfo[7]==0)
  ){
    int iSkin = zPathInfo[6] - '0';
    char *zNewScript;
    if( db_int(0,"SELECT count(*) FROM config WHERE name GLOB 'draft%d-*'",
                iSkin)<5 ){
      fossil_not_found_page();
      fossil_exit(0);
    }
    skin_use_draft(iSkin);
    zNewScript = mprintf("%T/draft%d", P("SCRIPT_NAME"), iSkin);
    if( g.zTop ) g.zTop = mprintf("%R/draft%d", iSkin);
    if( g.zBaseURL ) g.zBaseURL = mprintf("%s/draft%d", g.zBaseURL, iSkin);
    zPathInfo += 7;
    g.nExtraURL += 7;
    cgi_replace_parameter("PATH_INFO", zPathInfo);
    cgi_replace_parameter("SCRIPT_NAME", zNewScript);
    etag_cancel();
  }

  /* If the content type is application/x-fossil or
  ** application/x-fossil-debug, then a sync/push/pull/clone is
  ** desired, so default the PATH_INFO to /xfer
  */
  if( g.zContentType &&
  if( g.zContentType && memcmp(g.zContentType, "application/x-fossil", 20)==0 ){
      strncmp(g.zContentType, "application/x-fossil", 20)==0 ){
    /* Special case:  If the content mimetype shows that it is "fossil sync"
    ** payload, then pretend that the PATH_INFO is /xfer so that we always
    ** invoke the sync page. */
    zPathInfo = "/xfer";
  }

  /* Use the first element of PATH_INFO as the page name
  ** and deliver the appropriate page back to the user.
  */
  set_base_url();
  if( zPathInfo==0 || zPathInfo[0]==0 
  set_base_url(0);
  if( fossil_redirect_to_https_if_needed(2) ) return;
  if( zPathInfo==0 || zPathInfo[0]==0
      || (zPathInfo[0]=='/' && zPathInfo[1]==0) ){
    /* Second special case: If the PATH_INFO is blank, issue a redirect to
    ** the home page identified by the "index-page" setting in the repository
    ** CONFIG table, to "/index" if there no "index-page" setting. */
#ifdef FOSSIL_ENABLE_JSON
    if(g.json.isJsonMode){
      json_err(FSL_JSON_E_RESOURCE_NOT_FOUND,NULL,1);
      fossil_exit(0);
    }
#endif
    fossil_redirect_home();
    fossil_redirect_home() /*does not return*/;
  }else{
    zPath = mprintf("%s", zPathInfo);
  }

  /* Remove the leading "/" at the beginning of the path.
  /* Make g.zPath point to the first element of the path.  Make
  ** g.zExtra point to everything past that point.
  */
  g.zPath = &zPath[1];
  for(i=1; zPath[i] && zPath[i]!='/'; i++){}
  if( zPath[i]=='/' ){
    zPath[i] = 0;
    g.zExtra = &zPath[i+1];
  }else{
    g.zExtra = 0;
  }
  if( g.zExtra ){
    /* CGI parameters get this treatment elsewhere, but places like getfile
    ** will use g.zExtra directly.
    ** Reminder: the login mechanism uses 'name' differently, and may
    ** eventually have a problem/collision with this.
    **
    ** Disabled by stephan when running in JSON mode because this
    ** particular parameter name is very common and i have had no end
    ** of grief with this handling. The JSON API never relies on the
    ** handling below, and by disabling it in JSON mode I can remove
    ** lots of special-case handling in several JSON handlers.
    */
#ifdef FOSSIL_ENABLE_JSON
    if(g.json.isJsonMode==0){
#endif
    dehttpize(g.zExtra);
    cgi_set_parameter_nocopy("name", g.zExtra);
  }
  
      dehttpize(g.zExtra);
      cgi_set_parameter_nocopy("name", g.zExtra, 1);
#ifdef FOSSIL_ENABLE_JSON
    }
#endif
  }

  /* Locate the method specified by the path and execute the function
  ** that implements that method.
  */
  if( name_search(g.zPath, aWebpage, count(aWebpage), &idx) &&
      name_search("not_found", aWebpage, count(aWebpage), &idx) ){
    cgi_set_status(404,"Not Found");
    @ <h1>Not Found</h1>
    @ <p>Page not found: %h(g.zPath)</p>
  if( dispatch_name_search(g.zPath-1, CMDFLAG_WEBPAGE, &pCmd)
   && dispatch_alias(g.zPath-1, &pCmd)
  ){
#ifdef FOSSIL_ENABLE_JSON
    if(g.json.isJsonMode!=0){
      json_err(FSL_JSON_E_RESOURCE_NOT_FOUND,NULL,0);
    }else
#endif
    {
#ifdef FOSSIL_ENABLE_TH1_HOOKS
      int rc;
      if( !g.fNoThHook ){
        rc = Th_WebpageHook(g.zPath, 0);
      }else{
        rc = TH_OK;
      }
      if( rc==TH_OK || rc==TH_RETURN || rc==TH_CONTINUE ){
        if( rc==TH_OK || rc==TH_RETURN ){
#endif
          cgi_set_status(404,"Not Found");
          @ <h1>Not Found</h1>
          @ <p>Page not found: %h(g.zPath)</p>
#ifdef FOSSIL_ENABLE_TH1_HOOKS
        }
        if( !g.fNoThHook && (rc==TH_OK || rc==TH_CONTINUE) ){
          Th_WebpageNotify(g.zPath, 0);
        }
      }
#endif
    }
  }else if( pCmd->xFunc!=page_xfer && db_schema_is_outofdate() ){
#ifdef FOSSIL_ENABLE_JSON
    if(g.json.isJsonMode!=0){
      json_err(FSL_JSON_E_DB_NEEDS_REBUILD,NULL,0);
    }else
#endif
    {
      @ <h1>Server Configuration Error</h1>
      @ <p>The database schema on the server is out-of-date.  Please ask
      @ the administrator to run <b>fossil rebuild</b>.</p>
    }
  }else{
    if(0==(CMDFLAG_LDAVG_EXEMPT & pCmd->eCmdFlags)){
      load_control();
    }
#ifdef FOSSIL_ENABLE_JSON
    {
      static int jsonOnce = 0;
      if( jsonOnce==0 && g.json.isJsonMode!=0 ){
        assert(json_is_bootstrapped_early());
        json_bootstrap_late();
        jsonOnce = 1;
      }
    }
#endif
    if( (pCmd->eCmdFlags & CMDFLAG_RAWCONTENT)==0 ){
      cgi_decode_post_parameters();
      if( !cgi_same_origin() ){
        isReadonly = 1;
        db_protect(PROTECT_READONLY);
      }
    }
    if( g.fCgiTrace ){
      fossil_trace("######## Calling %s #########\n", pCmd->zName);
      cgi_print_all(1, 1, 0);
    }
#ifdef FOSSIL_ENABLE_TH1_HOOKS
    {
      /*
      ** The TH1 return codes from the hook will be handled as follows:
      **
      ** TH_OK: The xFunc() and the TH1 notification will both be executed.
      **
      ** TH_ERROR: The xFunc() will be skipped, the TH1 notification will be
      **           skipped.  If the xFunc() is being hooked, the error message
      **           will be emitted.
      **
      ** TH_BREAK: The xFunc() and the TH1 notification will both be skipped.
      **
      ** TH_RETURN: The xFunc() will be executed, the TH1 notification will be
      **            skipped.
      **
      ** TH_CONTINUE: The xFunc() will be skipped, the TH1 notification will be
      **              executed.
      */
      int rc;
      if( !g.fNoThHook ){
        rc = Th_WebpageHook(pCmd->zName+1, pCmd->eCmdFlags);
      }else{
        rc = TH_OK;
      }
      if( rc==TH_OK || rc==TH_RETURN || rc==TH_CONTINUE ){
        if( rc==TH_OK || rc==TH_RETURN ){
#endif
          g.zPhase = pCmd->zName;
    aWebpage[idx].xFunc();
  }

          pCmd->xFunc();
#ifdef FOSSIL_ENABLE_TH1_HOOKS
        }
        if( !g.fNoThHook && (rc==TH_OK || rc==TH_CONTINUE) ){
          Th_WebpageNotify(pCmd->zName+1, pCmd->eCmdFlags);
        }
      }
    }
#endif
    if( isReadonly ){
      db_protect_pop();
    }
  }

  /* Return the result.
  */
  g.zPhase = "web-page reply";
  cgi_reply();
}

/* If the CGI program contains one or more lines of the form
**
**    redirect:  repository-filename  http://hostname/path/%s
**
** then control jumps here.  Search each repository for an artifact ID
** or ticket ID that matches the "name" query parameter.  If there is
** no "name" query parameter, use PATH_INFO instead.  If a match is
** found, redirect to the corresponding URL.  Substitute "%s" in the
** URL with the value of the name query parameter before the redirect.
**
** If there is a line of the form:
**
**    redirect: * URL
**
** Then a redirect is made to URL if no match is found.  If URL contains
** "%s" then substitute the "name" query parameter.  If REPO is "*" and
** URL does not contains "%s" and does not contain "?" then append
** PATH_INFO and QUERY_STRING to the URL prior to the redirect.
**
** If no matches are found and if there is no "*" entry, then generate
** a primitive error message.
**
** USE CASES:
**
** (1)  Suppose you have two related projects projA and projB.  You can
**      use this feature to set up an /info page that covers both
**      projects.
**
**          redirect: /fossils/projA.fossil /proj-a/info/%s
**          redirect: /fossils/projB.fossil /proj-b/info/%s
**
**      Then visits to the /info/HASH page will redirect to the
**      first project that contains that hash.
**
** (2)  Use the "*" form for to redirect legacy URLs.  On the Fossil
**      website we have an CGI at http://fossil.com/index.html (note
**      ".com" instead of ".org") that looks like this:
**
**          #!/usr/bin/fossil
**          redirect: * https://fossil-scm.org/home
**
**      Thus requests to the .com website redirect to the .org website.
*/
static void redirect_web_page(int nRedirect, char **azRedirect){
  int i;                             /* Loop counter */
  const char *zNotFound = 0;         /* Not found URL */
  const char *zName = P("name");
  set_base_url(0);
  if( zName==0 ){
    zName = P("PATH_INFO");
    if( zName && zName[0]=='/' ) zName++;
  }
  if( zName ){
    for(i=0; i<nRedirect; i++){
      if( fossil_strcmp(azRedirect[i*2],"*")==0 ){
        zNotFound = azRedirect[i*2+1];
        continue;
      }else if( validate16(zName, strlen(zName)) ){
        db_open_repository(azRedirect[i*2]);
        if( db_exists("SELECT 1 FROM blob WHERE uuid GLOB '%q*'", zName) ||
            db_exists("SELECT 1 FROM ticket WHERE tkt_uuid GLOB '%q*'",zName) ){
          cgi_redirectf(azRedirect[i*2+1] /*works-like:"%s"*/, zName);
          return;
        }
        db_close(1);
      }
    }
  }
  if( zNotFound ){
    Blob to;
    const char *z;
    if( strstr(zNotFound, "%s") ){
      cgi_redirectf(zNotFound /*works-like:"%s"*/, zName);
    }
    if( strchr(zNotFound, '?') ){
      cgi_redirect(zNotFound);
    }
    blob_init(&to, zNotFound, -1);
    z = P("PATH_INFO");
    if( z && z[0]=='/' ) blob_append(&to, z, -1);
    z = P("QUERY_STRING");
    if( z && z[0]!=0 ) blob_appendf(&to, "?%s", z);
    cgi_redirect(blob_str(&to));
  }else{
    @ <html>
    @ <head><title>No Such Object</title></head>
    @ <body>
    @ <p>No such object: <b>%h(zName)</b></p>
    @ </body>
    cgi_reply();
  }
}

/*
** COMMAND: cgi
** COMMAND: cgi*
**
** Usage: %fossil ?cgi? SCRIPT
** Usage: %fossil ?cgi? FILE
**
** This command causes Fossil to generate reply to a CGI request.
**
** The SCRIPT argument is the name of a file that is the CGI script
** The FILE argument is the name of a control file that provides Fossil
** that is being run.  The command name, "cgi", may be omitted if
** the GATEWAY_INTERFACE environment variable is set to "CGI" (which
** should always be the case for CGI scripts run by a webserver.)  The
** SCRIPT file should look something like this:
** with important information such as where to find its repository.  In
** a typical CGI deployment, FILE is the name of the CGI script and will
** typically look something like this:
**
**      #!/usr/bin/fossil
**      repository: /home/somebody/project.db
**
** The command name, "cgi", may be omitted if the GATEWAY_INTERFACE
** environment variable is set to "CGI", which should always be the
** case for CGI scripts run by a webserver.  Fossil ignores any lines
** that begin with "#".
**
** The following control lines are recognized:
**
** The second line defines the name of the repository.  After locating
** the repository, fossil will generate a webpage on stdout based on
** the values of standard CGI environment variables.
**    repository: PATH         Name of the Fossil repository
**
**    directory:  PATH         Name of a directory containing many Fossil
**                             repositories whose names all end with ".fossil".
**                             There should only be one of "repository:"
**                             or "directory:"
**
**    notfound: URL            When in "directory:" mode, redirect to
**                             URL if no suitable repository is found.
**
**    repolist                 When in "directory:" mode, display a page
**                             showing a list of available repositories if
**                             the URL is "/".
**
**    localauth                Grant administrator privileges to connections
**                             from 127.0.0.1 or ::1.
**
**    nossl                    Signal that no SSL connections are available.
**
**    nocompress               Do not compress HTTP replies.
**
**    skin: LABEL              Use the built-in skin called LABEL rather than
**                             the default, or the default if LABEL is empty.
**                             If there are no skins called LABEL then this
**                             line is a no-op.
**
**    files: GLOBLIST          GLOBLIST is a comma-separated list of GLOB
**                             patterns that specify files that can be
**                             returned verbatim.  This feature allows Fossil
**                             to act as a web server returning static
**                             content.
**
**    setenv: NAME VALUE       Set environment variable NAME to VALUE.  Or
**                             if VALUE is omitted, unset NAME.
**
**    HOME: PATH               Shorthand for "setenv: HOME PATH"
**
**    cgi-debug: FILE          Causing debugging information to be written
**                             into FILE.
**
**    errorlog: FILE           Warnings, errors, and panics written to FILE.
**
**    timeout: SECONDS         Do not run for longer than SECONDS.  The default
**                             timeout is FOSSIL_DEFAULT_TIMEOUT (600) seconds.
**
**    extroot: DIR             Directory that is the root of the sub-CGI tree
**                             on the /ext page.
**
**    redirect: REPO URL       Extract the "name" query parameter and search
**                             REPO for a check-in or ticket that matches the
**                             value of "name", then redirect to URL.  There
**                             can be multiple "redirect:" lines that are
**                             processed in order.  If the REPO is "*", then
**                             an unconditional redirect to URL is taken.
**
**    jsmode: VALUE            Specifies the delivery mode for JavaScript
**                             files. See the help text for the --jsmode
**                             flag of the http command.
**
**    mainmenu: FILE           Override the mainmenu config setting with the
**                             contents of the given file.
**
** Most CGI files contain only a "repository:" line.  It is uncommon to
** use any other option.
**
** The lines are processed in the order they are read, which is most
** significant for "errorlog:", which should be set before "repository:"
** so that any warnings from the database when opening the repository
** go to that log file.
**
** See also: [[http]], [[server]], [[winsrv]]
*/
void cmd_cgi(void){
  const char *zFile;
  const char *zNotFound = 0;
  char **azRedirect = 0;             /* List of repositories to redirect to */
  int nRedirect = 0;                 /* Number of entries in azRedirect */
  Glob *pFileGlob = 0;               /* Pattern for files */
  int allowRepoList = 0;             /* Allow lists of repository files */
  Blob config, line, key, value;
  Blob config, line, key, value, value2;
  if( g.argc==3 && strcmp(g.argv[1],"cgi")==0 ){
    zFile = g.argv[2];
  }else{
    zFile = g.argv[1];
  }
  /* Initialize the CGI environment. */
  g.httpOut = stdout;
  g.httpIn = stdin;
#ifdef __MINGW32__
  /* Set binary mode on windows to avoid undesired translations
  ** between \n and \r\n. */
  setmode(_fileno(g.httpOut), _O_BINARY);
  setmode(_fileno(g.httpIn), _O_BINARY);
#endif
#ifdef __EMX__
  /* Similar hack for OS/2 */
  setmode(fileno(g.httpOut), O_BINARY);
  setmode(fileno(g.httpIn), O_BINARY);
  fossil_binary_mode(g.httpOut);
  fossil_binary_mode(g.httpIn);
#endif
  g.cgiOutput = 1;
  g.zReqType = "CGI";
  fossil_set_timeout(FOSSIL_DEFAULT_TIMEOUT);
  /* Find the name of the CGI control file */
  if( g.argc==3 && fossil_strcmp(g.argv[1],"cgi")==0 ){
    g.zCgiFile = g.argv[2];
  }else if( g.argc>=2 ){
    g.zCgiFile = g.argv[1];
  }else{
    cgi_panic("No CGI control file specified");
  }
  /* Read and parse the CGI control file. */
  blob_read_from_file(&config, zFile);
  blob_read_from_file(&config, g.zCgiFile, ExtFILE);
  while( blob_line(&config, &line) ){
    if( !blob_token(&line, &key) ) continue;
    if( blob_buffer(&key)[0]=='#' ) continue;
    if( blob_eq(&key, "debug:") && blob_token(&line, &value) ){
    if( blob_eq(&key, "repository:") && blob_tail(&line, &value) ){
      g.fDebug = fopen(blob_str(&value), "a");
      blob_reset(&value);
      continue;
      /* repository: FILENAME
      **
      ** The name of the Fossil repository to be served via CGI.  Most
      ** fossil CGI scripts have a single non-comment line that contains
      ** this one entry.
    }
    if( blob_eq(&key, "HOME:") && blob_token(&line, &value) ){
      cgi_setenv("HOME", blob_str(&value));
      blob_reset(&value);
      */
      blob_trim(&value);
      continue;
    }
    if( blob_eq(&key, "repository:") && blob_token(&line, &value) ){
      db_open_repository(blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "directory:") && blob_token(&line, &value) ){
      /* directory: DIRECTORY
      **
      ** If repository: is omitted, then terms of the PATH_INFO cgi parameter
      ** are appended to DIRECTORY looking for a repository (whose name ends
      ** in ".fossil") or a file in "files:".
      */
      db_close();
      db_close(1);
      g.zRepositoryName = mprintf("%s", blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "notfound:") && blob_token(&line, &value) ){
      /* notfound: URL
      **
      ** If using directory: and no suitable repository or file is found,
      ** then redirect to URL.
      */
      zNotFound = mprintf("%s", blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "localauth") ){
      /* localauth
      **
      ** Grant "administrator" privileges to users connecting with HTTP
      ** from IP address 127.0.0.1.  Do not bother checking credentials.
      */
      g.useLocalauth = 1;
      continue;
    }
    if( blob_eq(&key, "nossl") ){
      /* nossl
      **
      ** Signal that no SSL connections are available.
      */
      g.sslNotAvailable = 1;
      continue;
    }
    if( blob_eq(&key, "nocompress") ){
      /* nocompress
      **
      ** Do not compress HTTP replies.
      */
      g.fNoHttpCompress = 1;
      continue;
    }
    if( blob_eq(&key, "repolist") ){
      /* repolist
      **
      ** If using "directory:" and the URL is "/" then generate a page
      ** showing a list of available repositories.
      */
      allowRepoList = 1;
      continue;
    }
    if( blob_eq(&key, "redirect:") && blob_token(&line, &value)
            && blob_token(&line, &value2) ){
      /* See the header comment on the redirect_web_page() function
      ** above for details. */
      nRedirect++;
      azRedirect = fossil_realloc(azRedirect, 2*nRedirect*sizeof(char*));
      azRedirect[nRedirect*2-2] = mprintf("%s", blob_str(&value));
      azRedirect[nRedirect*2-1] = mprintf("%s", blob_str(&value2));
      blob_reset(&value);
      blob_reset(&value2);
      continue;
    }
    if( blob_eq(&key, "files:") && blob_token(&line, &value) ){
      /* files: GLOBLIST
      **
      ** GLOBLIST is a comma-separated list of filename globs.  For
      ** example:  *.html,*.css,*.js
      **
      ** If the repository: line is omitted and then PATH_INFO is searched
      ** for files that match any of these GLOBs and if any such file is
      ** found it is returned verbatim.  This feature allows "fossil server"
      ** to function as a primitive web-server delivering arbitrary content.
      */
      pFileGlob = glob_create(blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "setenv:") && blob_token(&line, &value) ){
      /* setenv: NAME VALUE
      ** setenv: NAME
      **
      ** Sets environment variable NAME to VALUE.  If VALUE is omitted, then
      ** the environment variable is unset.
      */
      blob_token(&line,&value2);
      fossil_setenv(blob_str(&value), blob_str(&value2));
      blob_reset(&value);
      blob_reset(&value2);
      continue;
    }
    if( blob_eq(&key, "errorlog:") && blob_token(&line, &value) ){
      /* errorlog: FILENAME
      **
      ** Causes messages from warnings, errors, and panics to be appended
      ** to FILENAME.
      */
      g.zErrlog = mprintf("%s", blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "extroot:") && blob_token(&line, &value) ){
      /* extroot: DIRECTORY
      **
      ** Enables the /ext webpage to use sub-cgi rooted at DIRECTORY
      */
      g.zExtRoot = mprintf("%s", blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "timeout:") && blob_token(&line, &value) ){
      /* timeout: SECONDS
      **
      ** Set an alarm() that kills the process after SECONDS.  The
      ** default value is FOSSIL_DEFAULT_TIMEOUT (600) seconds.
      */
      fossil_set_timeout(atoi(blob_str(&value)));
      continue;
    }
    if( blob_eq(&key, "HOME:") && blob_token(&line, &value) ){
      /* HOME: VALUE
      **
      ** Set CGI parameter "HOME" to VALUE.  This is legacy.  Use
      ** setenv: instead.
      */
      cgi_setenv("HOME", blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "skin:") ){
      /* skin: LABEL
      **
      ** Use one of the built-in skins defined by LABEL.  LABEL is the
      ** name of the subdirectory under the skins/ directory that holds
      ** the elements of the built-in skin.  If LABEL does not match,
      ** this directive is a silent no-op. It may alternately be
      ** an absolute path to a directory which holds skin definition
      ** files (header.txt, footer.txt, etc.). If LABEL is empty,
      ** the skin stored in the CONFIG db table is used.
      */
      blob_token(&line, &value);
      fossil_free(skin_use_alternative(blob_str(&value), 1, SKIN_FROM_CGI));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "jsmode:") && blob_token(&line, &value) ){
      /* jsmode: MODE
      **
      ** Change how JavaScript resources are delivered with each HTML
      ** page.  MODE is "inline" to put all JS inline, or "separate" to
      ** cause each JS file to be requested using a separate HTTP request,
      ** or "bundled" to have all JS files to be fetched with a single
      ** auxiliary HTTP request. Noting, however, that "single" might
      ** actually mean more than one, depending on the script-timing
      ** requirements of any given page.
      */
      builtin_set_js_delivery_mode(blob_str(&value),0);
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "mainmenu:") && blob_token(&line, &value) ){
      /* mainmenu: FILENAME
      **
      ** Use the contents of FILENAME as the value of the site's
      ** "mainmenu" setting, overriding the contents (for this
      ** request) of the db-side setting or the hard-coded default.
      */
      g.zMainMenuFile = mprintf("%s", blob_str(&value));
      blob_reset(&value);
      continue;
    }
    if( blob_eq(&key, "cgi-debug:") && blob_token(&line, &value) ){
      /* cgi-debug: FILENAME
      **
      ** Causes output from cgi_debug() and CGIDEBUG(()) calls to go
      ** into FILENAME.  Useful for debugging CGI configuration problems.
      */
      char *zNow = cgi_iso8601_datestamp();
      cgi_load_environment();
      g.fDebug = fossil_fopen(blob_str(&value), "ab");
      blob_reset(&value);
      cgi_debug("-------- BEGIN cgi at %s --------\n", zNow);
      fossil_free(zNow);
      cgi_print_all(1,2,0);
      continue;
    }
  }
  blob_reset(&config);
  if( g.db==0 && g.zRepositoryName==0 ){
  if( g.db==0 && g.zRepositoryName==0 && nRedirect==0 ){
    cgi_panic("Unable to find or open the project repository");
  }
  cgi_init();
  if( nRedirect ){
    redirect_web_page(nRedirect, azRedirect);
  }else{
  process_one_web_page(zNotFound);
    process_one_web_page(zNotFound, pFileGlob, allowRepoList);
  }
}

/*
** If g.argv[2] exists then it is either the name of a repository
** If g.argv[arg] exists then it is either the name of a repository
** that will be used by a server, or else it is a directory that
** contains multiple repositories that can be served.  If g.argv[2]
** contains multiple repositories that can be served.  If g.argv[arg]
** is a directory, the repositories it contains must be named
** "*.fossil".  If g.argv[2] does not exists, then we must be within
** a check-out and the repository to be served is the repository of
** "*.fossil".  If g.argv[arg] does not exist, then we must be within
** an open check-out and the repository to serve is the repository of
** that check-out.
**
** Open the respository to be served if it is known.  If g.argv[2] is
** Open the repository to be served if it is known.  If g.argv[arg] is
** a directory full of repositories, then set g.zRepositoryName to
** the name of that directory and the specific repository will be
** opened later by process_one_web_page() based on the content of
** the PATH_INFO variable.
**
** If disallowDir is set, then the directory full of repositories method
** is disallowed.
** If the fCreate flag is set, then create the repository if it
** does not already exist. Always use "auto" hash-policy in this case.
*/
static void find_server_repository(int disallowDir){
  if( g.argc<3 ){
static void find_server_repository(int arg, int fCreate){
  if( g.argc<=arg ){
    db_must_be_within_tree();
  }else{
    const char *zRepo = g.argv[arg];
  }else if( !disallowDir && file_isdir(g.argv[2])==1 ){
    g.zRepositoryName = mprintf("%s", g.argv[2]);
    file_simplify_name(g.zRepositoryName, -1);
    int isDir = file_isdir(zRepo, ExtFILE);
    if( isDir==1 ){
      g.zRepositoryName = mprintf("%s", zRepo);
      file_simplify_name(g.zRepositoryName, -1, 0);
    }else{
      if( isDir==0 && fCreate ){
        const char *zPassword;
        db_create_repository(zRepo);
        db_open_repository(zRepo);
        db_begin_transaction();
        g.eHashPolicy = HPOLICY_SHA3;
        db_set_int("hash-policy", HPOLICY_SHA3, 0);
        db_initial_setup(0, "now", g.zLogin);
        db_end_transaction(0);
        fossil_print("project-id: %s\n", db_get("project-code", 0));
        fossil_print("server-id:  %s\n", db_get("server-code", 0));
        zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
        fossil_print("admin-user: %s (initial password is \"%s\")\n",
                     g.zLogin, zPassword);
        hash_user_password(g.zLogin);
        cache_initialize();
        g.zLogin = 0;
        g.userUid = 0;
      }else{
        db_open_repository(zRepo);
      }
    }
  }
}

#if USE_SEE
/*
** This function attempts to parse a string value in the following
** format:
**
**     "%lu:%p:%u"
**
** There are three parts, which must be delimited by colons.  The
** first part is an unsigned long integer in base-10 (decimal) format.
** The second part is a numerical representation of a native pointer,
** in the appropriate implementation defined format.  The third part
** is an unsigned integer in base-10 (decimal) format.
**
** If the specified value cannot be parsed, for any reason, a fatal
** error will be raised and the process will be terminated.
*/
void parse_pid_key_value(
  const char *zPidKey,   /* The value to be parsed. */
  PID_T *pProcessId,     /* The extracted process identifier. */
  LPVOID *ppAddress,     /* The extracted pointer value. */
  SIZE_T *pnSize         /* The extracted size value. */
){
  unsigned long processId = 0;
  unsigned int nSize = 0;
  if( sscanf(zPidKey, "%lu:%p:%u", &processId, ppAddress, &nSize)==3 ){
    *pProcessId = (PID_T)processId;
    *pnSize = (SIZE_T)nSize;
  }else{
    fossil_fatal("failed to parse pid key");
  }
}
#endif
    db_open_repository(g.argv[2]);
  }

/*
** WEBPAGE: test-pid
**
** Return the process identifier of the running Fossil server instance.
**
** Query parameters:
**
**   usepidkey           When present and available, also return the
**                       address and size, within this server process,
**                       of the saved database encryption key.  This
**                       is only supported when using SEE on Windows
**                       or Linux.
*/
void test_pid_page(void){
  login_check_credentials();
  if( !g.perm.Setup ){ login_needed(0); return; }
#if USE_SEE
  if( P("usepidkey")!=0 ){
    if( g.zPidKey ){
      @ %s(g.zPidKey)
      return;
    }else{
      const char *zSavedKey = db_get_saved_encryption_key();
      size_t savedKeySize = db_get_saved_encryption_key_size();
      if( zSavedKey!=0 && savedKeySize>0 ){
        @ %lu(GETPID()):%p(zSavedKey):%u(savedKeySize)
        return;
      }
    }
  }
#endif
  @ %d(GETPID())
}

/*
** Check for options to "fossil server" or "fossil ui" that imply that
** SSL should be used, and initialize the SSL decoder.
*/
static void decode_ssl_options(void){
#if FOSSIL_ENABLE_SSL
  const char *zCertFile = 0;
  const char *zKeyFile = 0;
  zCertFile = find_option("cert",0,1);
  zKeyFile = find_option("pkey",0,1);
  if( zCertFile ){
    g.httpUseSSL = 1;
    ssl_init_server(zCertFile, zKeyFile);
  }else if( zKeyFile ){
    fossil_fatal("--pkey without a corresponding --cert");
  }
#endif
}

/*
** undocumented format:
**
**        fossil http REPOSITORY INFILE OUTFILE IPADDR
**
** The argv==6 form is used by the win32 server only.
**
** COMMAND: http
** COMMAND: http*
**
** Usage: %fossil http REPOSITORY [--notfound URL]
** Usage: %fossil http ?REPOSITORY? ?OPTIONS?
**
** Handle a single HTTP request appearing on stdin.  The resulting webpage
** is delivered on stdout.  This method is used to launch an HTTP request
** handler from inetd, for example.  The argument is the name of the 
** repository.
** handler from inetd, for example.  The REPOSITORY argument is the name of
** the repository.
**
** If REPOSITORY is a directory that contains one or more respositories
** with names of the form "*.fossil" then the first element of the URL
** pathname selects among the various repositories.  If the pathname does
** If REPOSITORY is a directory that contains one or more repositories,
** either directly in REPOSITORY itself or in subdirectories, and
** with names of the form "*.fossil" then a prefix of the URL pathname
** selects from among the various repositories.  If the pathname does
** not select a valid repository and the --notfound option is available,
** then the server redirects (HTTP code 302) to the URL of --notfound.
** When REPOSITORY is a directory, the pathname must contain only
** alphanumerics, "_", "/", "-" and "." and no "-" may occur after a "/"
** and every "." must be surrounded on both sides by alphanumerics or else
** a 404 error is returned.  Static content files in the directory are
** returned if they match comma-separate GLOB pattern specified by --files
** and do not match "*.fossil*" and have a well-known suffix.
**
** Options:
**   --acme              Deliver files from the ".well-known" subdirectory
**   --baseurl URL       Base URL (useful with reverse proxies)
**   --cert FILE         Use TLS (HTTPS) encryption with the certificate (the
**                       fullchain.pem) taken from FILE.
**   --chroot DIR        Use directory for chroot instead of repository path.
**   --ckout-alias N     Treat URIs of the form /doc/N/... as if they were
**                          /doc/ckout/...
**   --extroot DIR       Document root for the /ext extension mechanism
**   --files GLOB        Comma-separate glob patterns for static file to serve
**   --host NAME         DNS Hostname of the server
**   --https             The HTTP request originated from https but has already
**                       been decoded by a reverse proxy.  Hence, URLs created
**                       by Fossil should use "https:" rather than "http:".
**   --in FILE           Take input from FILE instead of standard input
**   --ipaddr ADDR       Assume the request comes from the given IP address
**   --jsmode MODE       Determine how JavaScript is delivered with pages.
**                       Mode can be one of:
**                          inline       All JavaScript is inserted inline at
**                                       one or more points in the HTML file.
**                          separate     Separate HTTP requests are made for
**                                       each JavaScript file.
**                          bundled      Groups JavaScript files into one or
**                                       more bundled requests which
**                                       concatenate scripts together.
**                       Depending on the needs of any given page, inline
**                       and bundled modes might result in a single
**                       amalgamated script or several, but both approaches
**                       result in fewer HTTP requests than the separate mode.
**   --localauth         Connections from localhost are given "setup"
**                       privileges without having to log in
**   --mainmenu FILE     Override the mainmenu config setting with the contents
**                       of the given file
**   --nocompress        Do not compress HTTP replies
**   --nodelay           Omit backoffice processing if it would delay
**                       process exit
**   --nojail            Drop root privilege but do not enter the chroot jail
**   --nossl             Do not do http: to https: redirects, regardless of
**                       the redirect-to-https setting.
**   --notfound URL      Use URL as the "HTTP 404, object not found" page
**   --out FILE          Write the HTTP reply to FILE instead of to
**                       standard output
**   --pkey FILE         Read the private key used for TLS from FILE
**   --repolist          If REPOSITORY is directory, URL "/" lists all repos
**   --scgi              Interpret input as SCGI rather than HTTP
**   --skin LABEL        Use override skin LABEL. Use an empty string ("")
**                       to force use of the current local skin config.
**   --th-trace          Trace TH1 execution (for debugging purposes)
**   --usepidkey         Use saved encryption key from parent process. This is
**                       only necessary when using SEE on Windows or Linux.
**
** See also: [[cgi]], [[server]], [[winsrv]]
*/
void cmd_http(void){
  const char *zIpAddr;
  const char *zIpAddr = 0;
  const char *zNotFound;
  const char *zHost;
  const char *zAltBase;
  const char *zFileGlob;
  const char *zInFile;
  const char *zOutFile;
  const char *zChRoot;
  int useSCGI;
  int noJail;
  int allowRepoList;

  Th_InitTraceLog();
  builtin_set_js_delivery_mode(find_option("jsmode",0,1),0);

  /* The winhttp module passes the --files option as --files-urlenc with
  ** the argument being URL encoded, to avoid wildcard expansion in the
  ** shell.  This option is for internal use and is undocumented.
  */
  zFileGlob = find_option("files-urlenc",0,1);
  if( zFileGlob ){
    char *z = mprintf("%s", zFileGlob);
    dehttpize(z);
    zFileGlob = z;
  }else{
    zFileGlob = find_option("files",0,1);
  }
  skin_override();
  zNotFound = find_option("notfound", 0, 1);
  zChRoot = find_option("chroot",0,1);
  noJail = find_option("nojail",0,0)!=0;
  allowRepoList = find_option("repolist",0,0)!=0;
  g.useLocalauth = find_option("localauth", 0, 0)!=0;
  g.sslNotAvailable = find_option("nossl", 0, 0)!=0;
  g.fNoHttpCompress = find_option("nocompress",0,0)!=0;
  g.zExtRoot = find_option("extroot",0,1);
  g.zCkoutAlias = find_option("ckout-alias",0,1);
  g.zReqType = "HTTP";
  zInFile = find_option("in",0,1);
  if( g.argc!=2 && g.argc!=3 && g.argc!=6 ){
    cgi_panic("no repository specified");
  }
  if( zInFile ){
    backoffice_disable();
    g.httpIn = fossil_fopen(zInFile, "rb");
    if( g.httpIn==0 ) fossil_fatal("cannot open \"%s\" for reading", zInFile);
  }else{
    g.httpIn = stdin;
#if defined(_WIN32)
   _setmode(_fileno(stdin), _O_BINARY);
#endif
  }
  zOutFile = find_option("out",0,1);
  if( zOutFile ){
    g.httpOut = fossil_fopen(zOutFile, "wb");
    if( g.httpOut==0 ) fossil_fatal("cannot open \"%s\" for writing", zOutFile);
  }else{
    g.httpOut = stdout;
#if defined(_WIN32)
   _setmode(_fileno(stdout), _O_BINARY);
#endif
  }
  zIpAddr = find_option("ipaddr",0,1);
  useSCGI = find_option("scgi", 0, 0)!=0;
  if( useSCGI ) g.zReqType = "SCGI";
  zAltBase = find_option("baseurl", 0, 1);
  if( find_option("nodelay",0,0)!=0 ) backoffice_no_delay();
  if( zAltBase ) set_base_url(zAltBase);
  if( find_option("https",0,0)!=0 ){
    zIpAddr = fossil_getenv("REMOTE_HOST"); /* From stunnel */
    cgi_replace_parameter("HTTPS","on");
  }
  zHost = find_option("host", 0, 1);
  if( zHost ) cgi_replace_parameter("HTTP_HOST",zHost);
  g.zMainMenuFile = find_option("mainmenu",0,1);
  if( g.zMainMenuFile!=0 && file_size(g.zMainMenuFile,ExtFILE)<0 ){
    fossil_fatal("Cannot read --mainmenu file %s", g.zMainMenuFile);
  }
  decode_ssl_options();
  if( find_option("acme",0,0)!=0 ) g.fAllowACME = 1;

  /* We should be done with options.. */
  verify_all_options();
  if( g.httpUseSSL ){
    if( useSCGI ){
      fossil_fatal("SSL not (yet) supported for SCGI");
    }
    if( g.fSshClient & CGI_SSH_CLIENT ){
      fossil_fatal("SSL not compatible with SSH");
    }
    if( zInFile || zOutFile ){
      fossil_fatal("SSL usable only on a socket");
    }
    cgi_replace_parameter("HTTPS","on");
  }

  if( g.argc!=2 && g.argc!=3 ) usage("?REPOSITORY?");
  g.cgiOutput = 1;
  g.fullHttpReply = 1;
  find_server_repository(2, 0);
  if( g.argc==6 ){
  if( zIpAddr==0 ){
    g.httpIn = fopen(g.argv[3], "rb");
    g.httpOut = fopen(g.argv[4], "wb");
    zIpAddr = g.argv[5];
    zIpAddr = cgi_ssh_remote_addr(0);
    if( zIpAddr && zIpAddr[0] ){
      g.fSshClient |= CGI_SSH_CLIENT;
    }
  }
  g.zRepositoryName = enter_chroot_jail(
      zChRoot ? zChRoot : g.zRepositoryName, noJail);
  if( useSCGI ){
    cgi_handle_scgi_request();
  }else if( g.fSshClient & CGI_SSH_CLIENT ){
    ssh_request_loop(zIpAddr, glob_create(zFileGlob));
  }else{
#if FOSSIL_ENABLE_SSL
    g.httpIn = stdin;
    g.httpOut = stdout;
    zIpAddr = 0;
    if( g.httpUseSSL ){
      g.httpSSLConn = ssl_new_server(0);
    }
#endif
    cgi_handle_http_request(zIpAddr);
  }
  process_one_web_page(zNotFound, glob_create(zFileGlob), allowRepoList);
#if FOSSIL_ENABLE_SSL
  if( g.httpUseSSL && g.httpSSLConn ){
    ssl_close_server(g.httpSSLConn);
    g.httpSSLConn = 0;
  }
  find_server_repository(0);
  g.zRepositoryName = enter_chroot_jail(g.zRepositoryName);
  cgi_handle_http_request(zIpAddr);
  process_one_web_page(zNotFound);
#endif /* FOSSIL_ENABLE_SSL */
}

/*
** Process all requests in a single SSH connection if possible.
*/
void ssh_request_loop(const char *zIpAddr, Glob *FileGlob){
  blob_zero(&g.cgiIn);
  do{
    cgi_handle_ssh_http_request(zIpAddr);
    process_one_web_page(0, FileGlob, 0);
    blob_reset(&g.cgiIn);
  } while ( g.fSshClient & CGI_SSH_FOSSIL ||
          g.fSshClient & CGI_SSH_COMPAT );
}

/*
** COMMAND: test-http
**
** Works like the http command but gives setup permission to all users.
** Works like the [[http]] command but gives setup permission to all users,
** or whatever permission is described by "--usercap CAP".
**
** This command can used for interactive debugging of web pages.  For
** example, one can put a simple HTTP request in a file like this:
**
**     echo 'GET /timeline' >request.txt
**
** Then run (in a debugger) a command like this:
**
**     fossil test-http --debug <request.txt
**
** This command is also used internally by the "ssh" sync protocol.  Some
** special processing to support sync happens when this command is run
** and the SSH_CONNECTION environment variable is set.  Use the --test
** option on interactive sessions to avoid that special processing when
** using this command interactively over SSH.  A better solution would be
** to use a different command for "ssh" sync, but we cannot do that without
** breaking legacy.
**
** Options:
**   --nobody            Pretend to be user "nobody"
**   --test              Do not do special "sync" processing when operating
**                       over an SSH link
**   --th-trace          Trace TH1 execution (for debugging purposes)
**   --usercap   CAP     User capability string (Default: "sxy")
**
*/
void cmd_test_http(void){
  const char *zIpAddr;    /* IP address of remote client */
  const char *zUserCap;
  int bTest = 0;

  Th_InitTraceLog();
  zUserCap = find_option("usercap",0,1);
  if( !find_option("nobody",0,0) ){
    if( zUserCap==0 ){
      g.useLocalauth = 1;
      zUserCap = "sxy";
    }
  login_set_capabilities("s");
  cmd_http();
}

#ifndef __MINGW32__
    login_set_capabilities(zUserCap, 0);
  }
  bTest = find_option("test",0,0)!=0;
  g.httpIn = stdin;
  g.httpOut = stdout;
  fossil_binary_mode(g.httpOut);
  fossil_binary_mode(g.httpIn);
  g.zExtRoot = find_option("extroot",0,1);
  find_server_repository(2, 0);
  g.zReqType = "HTTP";
  g.cgiOutput = 1;
  g.fNoHttpCompress = 1;
  g.fullHttpReply = 1;
  g.sslNotAvailable = 1;  /* Avoid attempts to redirect */
  zIpAddr = bTest ? 0 : cgi_ssh_remote_addr(0);
  if( zIpAddr && zIpAddr[0] ){
    g.fSshClient |= CGI_SSH_CLIENT;
    ssh_request_loop(zIpAddr, 0);
  }else{
    cgi_set_parameter("REMOTE_ADDR", "127.0.0.1");
    cgi_handle_http_request(0);
    process_one_web_page(0, 0, 1);
  }
}

/*
** Respond to a SIGALRM by writing a message to the error log (if there
** is one) and exiting.
*/
#ifndef _WIN32
#if !defined(__DARWIN__) && !defined(__APPLE__)
/*
** Search for an executable on the PATH environment variable.
** Return true (1) if found and false (0) if not found.
*/
static int binaryOnPath(const char *zBinary){
static int nAlarmSeconds = 0;
  const char *zPath = getenv("PATH");
  char *zFull;
  int i;
  int bExists;
  while( zPath && zPath[0] ){
static void sigalrm_handler(int x){
  sqlite3_uint64 tmUser = 0, tmKernel = 0;
  fossil_cpu_times(&tmUser, &tmKernel);
  if( fossil_strcmp(g.zPhase, "web-page reply")==0
   && tmUser+tmKernel<10000000
    while( zPath[0]==':' ) zPath++;
    for(i=0; zPath[i] && zPath[i]!=':'; i++){}
    zFull = mprintf("%.*s/%s", i, zPath, zBinary);
    bExists = access(zFull, X_OK);
    free(zFull);
    if( bExists==0 ) return 1;
  ){
    /* Do not log time-outs during web-page reply unless more than
    ** 10 seconds of CPU time has been consumed */
    return;
    zPath += i;
  }
  fossil_panic("Timeout after %d seconds during %s"
               " - user %,llu µs, sys %,llu µs",
               nAlarmSeconds, g.zPhase, tmUser, tmKernel);
}
  return 0;
}
#endif
#endif

/*
** Arrange to timeout using SIGALRM after N seconds.  Or if N==0, cancel
** any pending timeout.
**
** Bugs:
** (1) This only works on unix systems.
** (2) Any call to sleep() or sqlite3_sleep() will cancel the alarm.
*/
void fossil_set_timeout(int N){
#ifndef _WIN32
  signal(SIGALRM, sigalrm_handler);
  alarm(N);
  nAlarmSeconds = N;
#endif

}

/*
** COMMAND: server
** COMMAND: server*
** COMMAND: ui
**
** Usage: %fossil server ?-P|--port TCPPORT? ?REPOSITORY?
**    Or: %fossil ui ?-P|--port TCPPORT? ?REPOSITORY?
** Usage: %fossil server ?OPTIONS? ?REPOSITORY?
**    or: %fossil ui ?OPTIONS? ?REPOSITORY?
**
** Open a socket and begin listening and responding to HTTP requests on
** TCP port 8080, or on any other TCP port defined by the -P or
** --port option.  The optional argument is the name of the repository.
** The repository argument may be omitted if the working directory is
** within an open checkout.
** --port option.  The optional REPOSITORY argument is the name of the
** Fossil repository to be served.  The REPOSITORY argument may be omitted
** if the working directory is within an open check-out, in which case the
** repository associated with that check-out is used.
**
** The "ui" command automatically starts a web browser after initializing
** the web server.
** the web server.  The "ui" command also binds to 127.0.0.1 and so will
** only process HTTP traffic from the local machine.
**
** If REPOSITORY is a directory name which is the root of a
** check-out, then use the repository associated with that check-out.
** This only works for the "fossil ui" command, not the "fossil server"
** command.
**
** If REPOSITORY begins with a "HOST:" or "USER@HOST:" prefix, then
** the command is run on the remote host specified and the results are
** tunneled back to the local machine via SSH.  This feature only works for
** the "fossil ui" command, not the "fossil server" command.  The name of the
** fossil executable on the remote host is specified by the --fossilcmd
** option, or if there is no --fossilcmd, it first tries "fossil" and if it
** is not found in the default $PATH set by SSH on the remote, it then adds
** "$HOME/bin:/usr/local/bin:/opt/homebrew/bin" to the PATH and tries again to
** run "fossil".
**
** REPOSITORY may also be a directory (aka folder) that contains one or
** more repositories with names ending in ".fossil".  In this case, a
** prefix of the URL pathname is used to search the directory for an
** appropriate repository.  To thwart mischief, the pathname in the URL must
** contain only alphanumerics, "_", "/", "-", and ".", and no "-" may
** occur after "/", and every "." must be surrounded on both sides by
** alphanumerics.  Any pathname that does not satisfy these constraints
** results in a 404 error.  Files in REPOSITORY that match the comma-separated
** list of glob patterns given by --files and that have known suffixes
** such as ".txt" or ".html" or ".jpeg" and do not match the pattern
** "*.fossil*" will be served as static content.  With the "ui" command,
** the REPOSITORY can only be a directory if the --notfound option is
** also present.
**
** For the special case REPOSITORY name of "/", the global configuration
** database is consulted for a list of all known repositories.  The --repolist
** option is implied by this special case.  The "fossil ui /" command is
** equivalent to "fossil all ui".  To see all repositories owned by "user"
** on machine "remote" via ssh, run "fossil ui user@remote:/".
**
** By default, the "ui" command provides full administrative access without
** having to log in.  This can be disabled by turning off the "localauth"
** setting.  Automatic login for the "server" command is available if the
** --localauth option is present and the "localauth" setting is off and the
** connection is from localhost.  The "ui" command also enables --repolist
** by default.
**
** Options:
**   --acme              Deliver files from the ".well-known" subdirectory
**   --baseurl URL       Use URL as the base (useful for reverse proxies)
**   --cert FILE         Use TLS (HTTPS) encryption with the certificate (the
**                       fullchain.pem) taken from FILE.
**   --chroot DIR        Use directory for chroot instead of repository path
**   --ckout-alias NAME  Treat URIs of the form /doc/NAME/... as if they were
**                       /doc/ckout/...
**   --create            Create a new REPOSITORY if it does not already exist
**   --errorlog FILE     Append HTTP error messages to FILE
**   --extroot DIR       Document root for the /ext extension mechanism
**   --files GLOBLIST    Comma-separated list of glob patterns for static files
**   --fossilcmd PATH    The pathname of the "fossil" executable on the remote
**                       system when REPOSITORY is remote.
**   --localauth         Enable automatic login for requests from localhost
**   --localhost         Listen on 127.0.0.1 only (always true for "ui")
**   --https             Indicates that the input is coming through a reverse
**                       proxy that has already translated HTTPS into HTTP.
**   --jsmode MODE       Determine how JavaScript is delivered with pages.
**                       Mode can be one of:
**                          inline       All JavaScript is inserted inline at
**                                       the end of the HTML file.
**                          separate     Separate HTTP requests are made for
**                                       each JavaScript file.
**                          bundled      One single separate HTTP fetches all
**                                       JavaScript concatenated together.
**                       Depending on the needs of any given page, inline
**                       and bundled modes might result in a single
**                       amalgamated script or several, but both approaches
**                       result in fewer HTTP requests than the separate mode.
**   --mainmenu FILE     Override the mainmenu config setting with the contents
**                       of the given file
**   --max-latency N     Do not let any single HTTP request run for more than N
**                       seconds (only works on unix)
**   -B|--nobrowser      Do not automatically launch a web-browser for the
**                       "fossil ui" command
**   --nocompress        Do not compress HTTP replies
**   --nojail            Drop root privileges but do not enter the chroot jail
**   --nossl             Do not force redirects to SSL even if the repository
**                       setting "redirect-to-https" requests it.  This is set
**                       by default for the "ui" command.
**   --notfound URL      Redirect to URL if a page is not found.
**   -p|--page PAGE      Start "ui" on PAGE.  ex: --page "timeline?y=ci"
**   --pkey FILE         Read the private key used for TLS from FILE
**   -P|--port [IP:]PORT  Listen on the given IP (optional) and port
**   --repolist          If REPOSITORY is dir, URL "/" lists repos
**   --scgi              Accept SCGI rather than HTTP
**   --skin LABEL        Use override skin LABEL, or the site's default skin if
**                       LABEL is an empty string.
**   --socket-mode MODE  File permissions to set for the unix socket created
**                       by the --socket-name option.
**   --socket-name NAME  Use a unix-domain socket called NAME instead of a
**                       TCP/IP socket.
**   --socket-owner USR  Try to set the owner of the unix socket to USR.
**                       USR can be of the form USER:GROUP to set both
**                       user and group.
**   --th-trace          Trace TH1 execution (for debugging purposes)
**   --usepidkey         Use saved encryption key from parent process.  This is
**                       only necessary when using SEE on Windows or Linux.
**
** In the "server" command, the REPOSITORY can be a directory (aka folder)
** See also: [[cgi]], [[http]], [[winsrv]]
** that contains one or more respositories with names ending in ".fossil".
** In that case, the first element of the URL is used to select among the
** various repositories.
*/
void cmd_webserver(void){
  int iPort, mxPort;        /* Range of TCP ports allowed */
  const char *zPort;        /* Value of the --port option */
  char *zBrowser;           /* Name of web browser program */
  const char *zBrowser;     /* Name of web browser program */
  char *zBrowserCmd = 0;    /* Command to launch the web browser */
  int isUiCmd;              /* True if command is "ui", not "server' */
  const char *zNotFound;    /* The --notfound option or NULL */
  int flags = 0;            /* Server flags */
#if !defined(_WIN32)
  const char *zChRoot;      /* Use for chroot instead of repository path */
  int noJail;               /* Do not enter the chroot jail */
  const char *zTimeout = 0; /* Max runtime of any single HTTP request */
#endif
  int allowRepoList;         /* List repositories on URL "/" */
  const char *zAltBase;      /* Argument to the --baseurl option */
  const char *zFileGlob;     /* Static content must match this */
  char *zIpAddr = 0;         /* Bind to this IP address or UN socket */
  int fCreate = 0;           /* The --create flag */
  int fNoBrowser = 0;        /* Do not auto-launch web-browser */
  const char *zInitPage = 0; /* Start on this page.  --page option */
  int findServerArg = 2;     /* argv index for find_server_repository() */
  char *zRemote = 0;         /* Remote host on which to run "fossil ui" */
  const char *zJsMode;       /* The --jsmode parameter */
  const char *zFossilCmd =0; /* Name of "fossil" binary on remote system */

#ifdef __MINGW32__

#if USE_SEE
  db_setup_for_saved_encryption_key();
#endif

#if defined(_WIN32)
  const char *zStopperFile;    /* Name of file used to terminate server */
  zStopperFile = find_option("stopper", 0, 1);
#endif

  if( g.zErrlog==0 ){
    g.zErrlog = "-";
  }
  g.zExtRoot = find_option("extroot",0,1);
  g.thTrace = find_option("th-trace", 0, 0)!=0;
  if( g.thTrace ){
    blob_zero(&g.thLog);
  zJsMode = find_option("jsmode",0,1);
  builtin_set_js_delivery_mode(zJsMode,0);
  zFileGlob = find_option("files-urlenc",0,1);
  if( zFileGlob ){
    char *z = mprintf("%s", zFileGlob);
    dehttpize(z);
    zFileGlob = z;
  }else{
    zFileGlob = find_option("files",0,1);
  }
  skin_override();
#if !defined(_WIN32)
  zChRoot = find_option("chroot",0,1);
  noJail = find_option("nojail",0,0)!=0;
  zTimeout = find_option("max-latency",0,1);
#endif
  g.useLocalauth = find_option("localauth", 0, 0)!=0;
  Th_InitTraceLog();
  zPort = find_option("port", "P", 1);
  isUiCmd = g.argv[1][0]=='u';
  if( isUiCmd ){
    zInitPage = find_option("page", "p", 1);
    if( zInitPage && zInitPage[0]=='/' ) zInitPage++;
    zFossilCmd = find_option("fossilcmd", 0, 1);
  }
  zNotFound = find_option("notfound", 0, 1);
  allowRepoList = find_option("repolist",0,0)!=0;
  if( find_option("nocompress",0,0)!=0 ) g.fNoHttpCompress = 1;
  zAltBase = find_option("baseurl", 0, 1);
  fCreate = find_option("create",0,0)!=0;
  g.zReqType = "HTTP";
  if( find_option("scgi", 0, 0)!=0 ){
    g.zReqType = "SCGI";
    flags |= HTTP_SERVER_SCGI;
  }
  if( zAltBase ){
    set_base_url(zAltBase);
  }
  g.sslNotAvailable = find_option("nossl", 0, 0)!=0 || isUiCmd;
  fNoBrowser = find_option("nobrowser", "B", 0)!=0;
  decode_ssl_options();
  if( find_option("https",0,0)!=0 || g.httpUseSSL ){
    cgi_replace_parameter("HTTPS","on");
  }
  if( find_option("localhost", 0, 0)!=0 ){
    flags |= HTTP_SERVER_LOCALHOST;
  }
  g.zCkoutAlias = find_option("ckout-alias",0,1);
  g.zMainMenuFile = find_option("mainmenu",0,1);
  if( g.zMainMenuFile!=0 && file_size(g.zMainMenuFile,ExtFILE)<0 ){
    fossil_fatal("Cannot read --mainmenu file %s", g.zMainMenuFile);
  }
  if( find_option("acme",0,0)!=0 ) g.fAllowACME = 1;
  g.zSockMode = find_option("socket-mode",0,1);
  g.zSockName = find_option("socket-name",0,1);
  g.zSockOwner = find_option("socket-owner",0,1);
  if( g.zSockName ){
#if defined(_WIN32)
    fossil_fatal("unix sockets are not supported on Windows");
#endif
    if( zPort ){
      fossil_fatal("cannot specify a port number for a unix socket");
    }
    if( isUiCmd && !fNoBrowser ){
      fossil_fatal("cannot start a web-browser on a unix socket");
    }
    flags |= HTTP_SERVER_UNIXSOCKET;
  }

  /* Undocumented option:  --debug-nofork
  **
  ** This sets the HTTP_SERVER_NOFORK flag, which causes only the
  ** very first incoming TCP/IP connection to be processed.  Used for
  ** debugging, since debugging across a fork() can be tricky
  */
  if( find_option("debug-nofork",0,0)!=0 ){
    flags |= HTTP_SERVER_NOFORK;
#if !defined(_WIN32)
    /* Disable the timeout during debugging */
    zTimeout = "100000000";
#endif
  }
  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=2 && g.argc!=3 ) usage("?REPOSITORY?");
  if( g.httpUseSSL && (flags & HTTP_SERVER_SCGI)!=0 ){
    fossil_fatal("SCGI does not (yet) support TLS-encrypted connections");
  }
  if( isUiCmd && 3==g.argc && file_isdir(g.argv[2], ExtFILE)>0 ){
    /* If REPOSITORY arg is the root of a check-out,
    ** chdir to that check-out so that the current version
    ** gets highlighted in the timeline by default. */
    const char * zDir = g.argv[2];
    if(dir_has_ckout_db(zDir)){
      if(0!=file_chdir(zDir, 0)){
        fossil_fatal("Cannot chdir to %s", zDir);
      }
      findServerArg = 99;
      fCreate = 0;
      g.argv[2] = 0;
      --g.argc;
    }
  }
  if( isUiCmd && 3==g.argc
   && (zRemote = (char*)file_skip_userhost(g.argv[2]))!=0
  ){
    /* The REPOSITORY argument has a USER@HOST: or HOST: prefix */
    const char *zRepoTail = file_skip_userhost(g.argv[2]);
    unsigned x;
    int n;
    sqlite3_randomness(2,&x);
    zPort = mprintf("%d", 8100+(x%32000));
    n = (int)(zRepoTail - g.argv[2]) - 1;
    zRemote = mprintf("%.*s", n, g.argv[2]);
    g.argv[2] = (char*)zRepoTail;
  }
  isUiCmd = g.argv[1][0]=='u';
  find_server_repository(isUiCmd);
  if( isUiCmd ){
    flags |= HTTP_SERVER_LOCALHOST|HTTP_SERVER_REPOLIST;
    g.useLocalauth = 1;
    allowRepoList = 1;
  }
  if( !zRemote ){
    find_server_repository(findServerArg, fCreate);
  }
  if( zInitPage==0 ){
    if( isUiCmd && g.localOpen ){
      zInitPage = "timeline?c=current";
    }else{
      zInitPage = "";
    }
  }
  if( zPort ){
    if( strchr(zPort,':') ){
      int i;
      for(i=strlen(zPort)-1; i>=0 && zPort[i]!=':'; i--){}
      if( i>0 ){
        if( zPort[0]=='[' && zPort[i-1]==']' ){
          zIpAddr = mprintf("%.*s", i-2, zPort+1);
        }else{
          zIpAddr = mprintf("%.*s", i, zPort);
        }
        zPort += i+1;
      }
    }
    iPort = mxPort = atoi(zPort);
    if( iPort<=0 ) fossil_fatal("port number must be greater than zero");
  }else{
    iPort = db_get_int("http-port", 8080);
    mxPort = iPort+100;
  }
#ifndef __MINGW32__
  /* Unix implementation */
  if( isUiCmd ){
#if !defined(__DARWIN__) && !defined(__APPLE__)
    zBrowser = db_get("web-browser", 0);
    if( zBrowser==0 ){
      static char *azBrowserProg[] = { "xdg-open", "gnome-open", "firefox" };
      int i;
      zBrowser = "echo";
      for(i=0; i<sizeof(azBrowserProg)/sizeof(azBrowserProg[0]); i++){
        if( binaryOnPath(azBrowserProg[i]) ){
          zBrowser = azBrowserProg[i];
          break;
        }
      }
    }
#else
    zBrowser = db_get("web-browser", "open");
#endif
  if( isUiCmd && !fNoBrowser ){
    char *zBrowserArg;
    const char *zProtocol = g.httpUseSSL ? "https" : "http";
    db_open_config(0,0);
    zBrowser = fossil_web_browser();
    if( zIpAddr==0 ){
      zBrowserArg = mprintf("%s://localhost:%%d/%s", zProtocol, zInitPage);
    }else if( strchr(zIpAddr,':') ){
      zBrowserArg = mprintf("%s://[%s]:%%d/%s", zProtocol, zIpAddr, zInitPage);
    }else{
      zBrowserArg = mprintf("%s://%s:%%d/%s", zProtocol, zIpAddr, zInitPage);
    }
    zBrowserCmd = mprintf("%s %!$ &", zBrowser, zBrowserArg);
    fossil_free(zBrowserArg);
  }
  if( zRemote ){
    /* If a USER@HOST:REPO argument is supplied, then use SSH to run
    ** "fossil ui --nobrowser" on the remote system and to set up a
    ** tunnel from the local machine to the remote. */
    FILE *sshIn;
    Blob ssh;
    int bRunning = 0;    /* True when fossil starts up on the remote */
    int isRetry;         /* True if on the second attempt */        
    char zLine[1000];

    blob_init(&ssh, 0, 0);
    for(isRetry=0; isRetry<2 && !bRunning; isRetry++){
      blob_reset(&ssh);
      transport_ssh_command(&ssh);
      blob_appendf(&ssh,
         " -t -L 127.0.0.1:%d:127.0.0.1:%d %!$",
         iPort, iPort, zRemote
      );
      if( zFossilCmd==0 ){
        if( ssh_needs_path_argument(zRemote,-1) ^ isRetry ){
          ssh_add_path_argument(&ssh);
        }
        blob_append_escaped_arg(&ssh, "fossil", 1);
      }else{
        blob_appendf(&ssh, " %$", zFossilCmd);
      }
      blob_appendf(&ssh, " ui --nobrowser --localauth --port %d", iPort);
      if( zNotFound ) blob_appendf(&ssh, " --notfound %!$", zNotFound);
      if( zFileGlob ) blob_appendf(&ssh, " --files-urlenc %T", zFileGlob);
      if( g.zCkoutAlias ) blob_appendf(&ssh," --ckout-alias %!$",g.zCkoutAlias);
      if( g.zExtRoot ) blob_appendf(&ssh, " --extroot %$", g.zExtRoot);
      if( skin_in_use() ) blob_appendf(&ssh, " --skin %s", skin_in_use());
      if( zJsMode ) blob_appendf(&ssh, " --jsmode %s", zJsMode);
      if( fCreate ) blob_appendf(&ssh, " --create");
      blob_appendf(&ssh, " %$", g.argv[2]);
      if( isRetry ){
        fossil_print("First attempt to run \"fossil\" on %s failed\n"
                     "Retry: ", zRemote);
      } 
      fossil_print("%s\n", blob_str(&ssh));
      sshIn = popen(blob_str(&ssh), "r");
      if( sshIn==0 ){
        fossil_fatal("unable to %s", blob_str(&ssh));
      }
      while( fgets(zLine, sizeof(zLine), sshIn) ){
        fputs(zLine, stdout);
        fflush(stdout);
        if( !bRunning && sqlite3_strglob("*Listening for HTTP*",zLine)==0 ){
          bRunning = 1;
          if( isRetry ){
            ssh_needs_path_argument(zRemote,99);
          }
          db_close_config();
          if( zBrowserCmd ){
            char *zCmd = mprintf(zBrowserCmd/*works-like:"%d"*/,iPort);
            fossil_system(zCmd);
            fossil_free(zCmd);
            fossil_free(zBrowserCmd);
            zBrowserCmd = 0;
          }
        }
      }
      pclose(sshIn);
    }
    fossil_free(zBrowserCmd);
    return;
    zBrowserCmd = mprintf("%s http://localhost:%%d/ &", zBrowser);
  }
  if( g.repositoryOpen ) flags |= HTTP_SERVER_HAD_REPOSITORY;
  if( g.localOpen ) flags |= HTTP_SERVER_HAD_CHECKOUT;
  db_close();
  if( cgi_http_server(iPort, mxPort, zBrowserCmd) ){
    fossil_fatal("unable to listen on TCP socket %d", iPort);
  db_close(1);
#if !defined(_WIN32)
  if( 1 ){
    /* Modern kernels suppress SIGTERM to PID 1 to prevent root from
    ** rebooting the system by nuking the init system.  The only way
    ** Fossil becomes that PID 1 is when it's running solo in a Linux
    ** container or similar, so we do want to exit immediately, to
    ** allow the container to shut down quickly.
    **
    ** This has to happen ahead of the other signal() calls below.
    ** They apply after the HTTP hit is handled, but this one needs
    ** to be registered while we're waiting for that to occur.
    **/
    signal(SIGTERM, fossil_exit);
    signal(SIGINT,  fossil_exit);
  }
#endif /* !WIN32 */

  /* Start up an HTTP server
  */
  fossil_setenv("SERVER_SOFTWARE", "fossil version " RELEASE_VERSION
                " " MANIFEST_VERSION " " MANIFEST_DATE);
#if !defined(_WIN32)
  /* Unix implementation */
  if( cgi_http_server(iPort, mxPort, zBrowserCmd, zIpAddr, flags) ){
    fossil_fatal("unable to listen on CGI socket");
  }
  /* For the parent process, the cgi_http_server() command above never
  ** returns (except in the case of an error).  Instead, for each incoming
  ** client connection, a child process is created, file descriptors 0
  ** and 1 are bound to that connection, and the child returns.
  **
  ** So, when control reaches this point, we are running as a
  ** child process, the HTTP or SCGI request is pending on file
  ** descriptor 0 and the reply should be written to file descriptor 1.
  */
  if( zTimeout ){
    fossil_set_timeout(atoi(zTimeout));
  }else{
    fossil_set_timeout(FOSSIL_DEFAULT_TIMEOUT);
  }
  g.httpIn = stdin;
  g.httpOut = stdout;
  signal(SIGSEGV, sigsegv_handler);
  signal(SIGPIPE, sigpipe_handler);
  if( g.fHttpTrace || g.fSqlTrace ){
    fprintf(stderr, "====== SERVER pid %d =======\n", getpid());
  if( g.fAnyTrace ){
    fprintf(stderr, "/***** Subprocess %d *****/\n", getpid());
  }
  g.cgiOutput = 1;
  find_server_repository(isUiCmd);
  g.zRepositoryName = enter_chroot_jail(g.zRepositoryName);
  cgi_handle_http_request(0);
  process_one_web_page(zNotFound);
#else
  find_server_repository(2, 0);
  if( fossil_strcmp(g.zRepositoryName,"/")==0 ){
    allowRepoList = 1;
  }else{
    g.zRepositoryName = enter_chroot_jail(
        zChRoot ? zChRoot : g.zRepositoryName, noJail);
  }
  if( flags & HTTP_SERVER_SCGI ){
    cgi_handle_scgi_request();
  }else if( g.httpUseSSL ){
#if FOSSIL_ENABLE_SSL
    g.httpSSLConn = ssl_new_server(0);
#endif
    cgi_handle_http_request(0);
  }else{
    cgi_handle_http_request(0);
  }
  process_one_web_page(zNotFound, glob_create(zFileGlob), allowRepoList);
  if( g.fAnyTrace ){
    fprintf(stderr, "/***** Webpage finished in subprocess %d *****/\n",
            getpid());
  }
#if FOSSIL_ENABLE_SSL
  if( g.httpUseSSL && g.httpSSLConn ){
    ssl_close_server(g.httpSSLConn);
    g.httpSSLConn = 0;
  }
#endif /* FOSSIL_ENABLE_SSL */

#else /* WIN32 */
  find_server_repository(2, 0);
  if( fossil_strcmp(g.zRepositoryName,"/")==0 ){
    allowRepoList = 1;
  }
  /* Win32 implementation */
  if( isUiCmd ){
  if( allowRepoList ){
    zBrowser = db_get("web-browser", "start");
    zBrowserCmd = mprintf("%s http://127.0.0.1:%%d/", zBrowser);
    flags |= HTTP_SERVER_REPOLIST;
  }
  db_close();
  win32_http_server(iPort, mxPort, zBrowserCmd, zStopperFile, zNotFound);
  if( win32_http_service(iPort, zAltBase, zNotFound, zFileGlob, flags) ){
    win32_http_server(iPort, mxPort, zBrowserCmd, zStopperFile,
                      zAltBase, zNotFound, zFileGlob, zIpAddr, flags);
  }
#endif
}

/*
** COMMAND: test-echo
**
** Usage:  %fossil test-echo [--hex] ARGS...
**
** Echo all command-line arguments (enclosed in [...]) to the screen so that
** wildcard expansion behavior of the host shell can be investigated.
**
** With the --hex option, show the output as hexadecimal.  This can be used
** to verify the fossil_path_to_utf8() routine on Windows and Mac.
*/
void test_echo_cmd(void){
  int i, j;
  if( find_option("hex",0,0)==0 ){
    fossil_print("g.nameOfExe = [%s]\n", g.nameOfExe);
    for(i=0; i<g.argc; i++){
      fossil_print("argv[%d] = [%s]\n", i, g.argv[i]);
    }
  }else{
    unsigned char *z, c;
    for(i=0; i<g.argc; i++){
      fossil_print("argv[%d] = [", i);
      z = (unsigned char*)g.argv[i];
      for(j=0; (c = z[j])!=0; j++){
        fossil_print("%02x", c);
      }
      fossil_print("]\n");
    }
  }
}

/*
** WEBPAGE: test-warning
**
** Test error and warning log operation.  This webpage is accessible to
** the administrator only.
**
**     case=1           Issue a fossil_warning() while generating the page.
**     case=2           Extra db_begin_transaction()
**     case=3           Extra db_end_transaction()
**     case=4           Error during SQL processing
**     case=5           Call the segfault handler
**     case=6           Call webpage_assert()
**     case=7           Call webpage_error()
*/
void test_warning_page(void){
  int iCase = atoi(PD("case","0"));
  int i;
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_set_current_feature("test");
  style_header("Warning Test Page");
  style_submenu_element("Error Log","%R/errorlog");
  if( iCase<1 || iCase>4 ){
    @ <p>Generate a message to the <a href="%R/errorlog">error log</a>
    @ by clicking on one of the following cases:
  }else{
    @ <p>This is the test page for case=%d(iCase).  All possible cases:
  }
  for(i=1; i<=8; i++){
    @ <a href='./test-warning?case=%d(i)'>[%d(i)]</a>
  }
  @ </p>
  @ <p><ol>
  @ <li value='1'> Call fossil_warning()
  if( iCase==1 ){
    fossil_warning("Test warning message from /test-warning");
  }
  @ <li value='2'> Call db_begin_transaction()
  if( iCase==2 ){
    db_begin_transaction();
  }
  @ <li value='3'> Call db_end_transaction()
  if( iCase==3 ){
    db_end_transaction(0);
  }
  @ <li value='4'> warning during SQL
  if( iCase==4 ){
    Stmt q;
    db_prepare(&q, "SELECT uuid FROM blob LIMIT 5");
    db_step(&q);
    sqlite3_log(SQLITE_ERROR, "Test warning message during SQL");
    db_finalize(&q);
  }
  @ <li value='5'> simulate segfault handling
  if( iCase==5 ){
    sigsegv_handler(0);
  }
  @ <li value='6'> call webpage_assert(0)
  if( iCase==6 ){
    webpage_assert( 5==7 );
  }
  @ <li value='7'> call webpage_error()"
  if( iCase==7 ){
    cgi_reset_content();
    webpage_error("Case 7 from /test-warning");
  }
  @ <li value='8'> simulated timeout"
  if( iCase==8 ){
    fossil_set_timeout(1);
    cgi_reset_content();
    sqlite3_sleep(1100);
  }
  @ </ol>
  @ <p>End of test</p>
  style_finish_page();
}
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#
##############################################################################
# DO NOT EDIT
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl >main.mk"
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
# This file is included by linux-gcc.mk or linux-mingw.mk or possible
# This file is included by primary Makefile.
# some other makefiles.  This file contains the rules that are common
# to building regardless of the target.
#

XBCC = $(BCC) $(BCCFLAGS)
XTCC = $(TCC) $(CFLAGS) -I. -I$(SRCDIR)
XTCC = $(TCC) $(CFLAGS_INCLUDE) -I$(OBJDIR) $(TCCFLAGS)

TESTFLAGS := -quiet

SRC = \
  $(SRCDIR)/add.c \
  $(SRCDIR)/ajax.c \
  $(SRCDIR)/alerts.c \
  $(SRCDIR)/allrepo.c \
  $(SRCDIR)/attach.c \
  $(SRCDIR)/backlink.c \
  $(SRCDIR)/backoffice.c \
  $(SRCDIR)/bag.c \
  $(SRCDIR)/bisect.c \
  $(SRCDIR)/blob.c \
  $(SRCDIR)/branch.c \
  $(SRCDIR)/browse.c \
  $(SRCDIR)/builtin.c \
  $(SRCDIR)/bundle.c \
  $(SRCDIR)/cache.c \
  $(SRCDIR)/capabilities.c \
  $(SRCDIR)/captcha.c \
  $(SRCDIR)/cgi.c \
  $(SRCDIR)/chat.c \
  $(SRCDIR)/checkin.c \
  $(SRCDIR)/checkout.c \
  $(SRCDIR)/clearsign.c \
  $(SRCDIR)/clone.c \
  $(SRCDIR)/color.c \
  $(SRCDIR)/comformat.c \
  $(SRCDIR)/configure.c \
  $(SRCDIR)/content.c \
  $(SRCDIR)/cookies.c \
  $(SRCDIR)/db.c \
  $(SRCDIR)/delta.c \
  $(SRCDIR)/deltacmd.c \
  $(SRCDIR)/deltafunc.c \
  $(SRCDIR)/descendants.c \
  $(SRCDIR)/diff.c \
  $(SRCDIR)/diffcmd.c \
  $(SRCDIR)/dispatch.c \
  $(SRCDIR)/doc.c \
  $(SRCDIR)/encode.c \
  $(SRCDIR)/etag.c \
  $(SRCDIR)/event.c \
  $(SRCDIR)/export.c \
  $(SRCDIR)/extcgi.c \
  $(SRCDIR)/file.c \
  $(SRCDIR)/fileedit.c \
  $(SRCDIR)/finfo.c \
  $(SRCDIR)/foci.c \
  $(SRCDIR)/forum.c \
  $(SRCDIR)/fshell.c \
  $(SRCDIR)/fusefs.c \
  $(SRCDIR)/fuzz.c \
  $(SRCDIR)/glob.c \
  $(SRCDIR)/graph.c \
  $(SRCDIR)/gzip.c \
  $(SRCDIR)/hname.c \
  $(SRCDIR)/hook.c \
  $(SRCDIR)/http.c \
  $(SRCDIR)/http_socket.c \
  $(SRCDIR)/http_ssl.c \
  $(SRCDIR)/http_transport.c \
  $(SRCDIR)/import.c \
  $(SRCDIR)/info.c \
  $(SRCDIR)/interwiki.c \
  $(SRCDIR)/json.c \
  $(SRCDIR)/json_artifact.c \
  $(SRCDIR)/json_branch.c \
  $(SRCDIR)/json_config.c \
  $(SRCDIR)/json_diff.c \
  $(SRCDIR)/json_dir.c \
  $(SRCDIR)/json_finfo.c \
  $(SRCDIR)/json_login.c \
  $(SRCDIR)/json_query.c \
  $(SRCDIR)/json_report.c \
  $(SRCDIR)/json_status.c \
  $(SRCDIR)/json_tag.c \
  $(SRCDIR)/json_timeline.c \
  $(SRCDIR)/json_user.c \
  $(SRCDIR)/json_wiki.c \
  $(SRCDIR)/leaf.c \
  $(SRCDIR)/loadctrl.c \
  $(SRCDIR)/login.c \
  $(SRCDIR)/lookslike.c \
  $(SRCDIR)/main.c \
  $(SRCDIR)/manifest.c \
  $(SRCDIR)/markdown.c \
  $(SRCDIR)/markdown_html.c \
  $(SRCDIR)/md5.c \
  $(SRCDIR)/merge.c \
  $(SRCDIR)/merge3.c \
  $(SRCDIR)/moderate.c \
  $(SRCDIR)/name.c \
  $(SRCDIR)/patch.c \
  $(SRCDIR)/path.c \
  $(SRCDIR)/piechart.c \
  $(SRCDIR)/pikchrshow.c \
  $(SRCDIR)/pivot.c \
  $(SRCDIR)/popen.c \
  $(SRCDIR)/pqueue.c \
  $(SRCDIR)/printf.c \
  $(SRCDIR)/publish.c \
  $(SRCDIR)/purge.c \
  $(SRCDIR)/rebuild.c \
  $(SRCDIR)/regexp.c \
  $(SRCDIR)/repolist.c \
  $(SRCDIR)/report.c \
  $(SRCDIR)/rss.c \
  $(SRCDIR)/schema.c \
  $(SRCDIR)/search.c \
  $(SRCDIR)/security_audit.c \
  $(SRCDIR)/setup.c \
  $(SRCDIR)/setupuser.c \
  $(SRCDIR)/sha1.c \
  $(SRCDIR)/sha1hard.c \
  $(SRCDIR)/sha3.c \
  $(SRCDIR)/shun.c \
  $(SRCDIR)/sitemap.c \
  $(SRCDIR)/skins.c \
  $(SRCDIR)/smtp.c \
  $(SRCDIR)/sqlcmd.c \
  $(SRCDIR)/stash.c \
  $(SRCDIR)/stat.c \
  $(SRCDIR)/statrep.c \
  $(SRCDIR)/style.c \
  $(SRCDIR)/sync.c \
  $(SRCDIR)/tag.c \
  $(SRCDIR)/tar.c \
  $(SRCDIR)/terminal.c \
  $(SRCDIR)/th_main.c \
  $(SRCDIR)/timeline.c \
  $(SRCDIR)/tkt.c \
  $(SRCDIR)/tktsetup.c \
  $(SRCDIR)/undo.c \
  $(SRCDIR)/unicode.c \
  $(SRCDIR)/unversioned.c \
  $(SRCDIR)/update.c \
  $(SRCDIR)/url.c \
  $(SRCDIR)/user.c \
  $(SRCDIR)/utf8.c \
  $(SRCDIR)/util.c \
  $(SRCDIR)/verify.c \
  $(SRCDIR)/vfile.c \
  $(SRCDIR)/wiki.c \
  $(SRCDIR)/wikiformat.c \
  $(SRCDIR)/winfile.c \
  $(SRCDIR)/winhttp.c \
  $(SRCDIR)/xfer.c \
  $(SRCDIR)/xfersetup.c \
  $(SRCDIR)/zip.c

EXTRA_FILES = \
  $(SRCDIR)/../extsrc/pikchr-worker.js \
  $(SRCDIR)/../extsrc/pikchr.js \
  $(SRCDIR)/../extsrc/pikchr.wasm \
  $(SRCDIR)/../skins/ardoise/css.txt \
  $(SRCDIR)/../skins/ardoise/details.txt \
  $(SRCDIR)/../skins/ardoise/footer.txt \
  $(SRCDIR)/../skins/ardoise/header.txt \
  $(SRCDIR)/../skins/black_and_white/css.txt \
  $(SRCDIR)/../skins/black_and_white/details.txt \
  $(SRCDIR)/../skins/black_and_white/footer.txt \
  $(SRCDIR)/../skins/black_and_white/header.txt \
  $(SRCDIR)/../skins/blitz/css.txt \
  $(SRCDIR)/../skins/blitz/details.txt \
  $(SRCDIR)/../skins/blitz/footer.txt \
  $(SRCDIR)/../skins/blitz/header.txt \
  $(SRCDIR)/../skins/blitz/ticket.txt \
  $(SRCDIR)/../skins/darkmode/css.txt \
  $(SRCDIR)/../skins/darkmode/details.txt \
  $(SRCDIR)/../skins/darkmode/footer.txt \
  $(SRCDIR)/../skins/darkmode/header.txt \
  $(SRCDIR)/../skins/default/css.txt \
  $(SRCDIR)/../skins/default/details.txt \
  $(SRCDIR)/../skins/default/footer.txt \
  $(SRCDIR)/../skins/default/header.txt \
  $(SRCDIR)/../skins/eagle/css.txt \
  $(SRCDIR)/../skins/eagle/details.txt \
  $(SRCDIR)/../skins/eagle/footer.txt \
  $(SRCDIR)/../skins/eagle/header.txt \
  $(SRCDIR)/../skins/etienne/css.txt \
  $(SRCDIR)/../skins/etienne/details.txt \
  $(SRCDIR)/../skins/etienne/footer.txt \
  $(SRCDIR)/../skins/etienne/header.txt \
  $(SRCDIR)/../skins/khaki/css.txt \
  $(SRCDIR)/../skins/khaki/details.txt \
  $(SRCDIR)/../skins/khaki/footer.txt \
  $(SRCDIR)/../skins/khaki/header.txt \
  $(SRCDIR)/../skins/original/css.txt \
  $(SRCDIR)/../skins/original/details.txt \
  $(SRCDIR)/../skins/original/footer.txt \
  $(SRCDIR)/../skins/original/header.txt \
  $(SRCDIR)/../skins/plain_gray/css.txt \
  $(SRCDIR)/../skins/plain_gray/details.txt \
  $(SRCDIR)/../skins/plain_gray/footer.txt \
  $(SRCDIR)/../skins/plain_gray/header.txt \
  $(SRCDIR)/../skins/xekri/css.txt \
  $(SRCDIR)/../skins/xekri/details.txt \
  $(SRCDIR)/../skins/xekri/footer.txt \
  $(SRCDIR)/../skins/xekri/header.txt \
  $(SRCDIR)/accordion.js \
  $(SRCDIR)/alerts/bflat2.wav \
  $(SRCDIR)/alerts/bflat3.wav \
  $(SRCDIR)/alerts/bloop.wav \
  $(SRCDIR)/alerts/plunk.wav \
  $(SRCDIR)/ci_edit.js \
  $(SRCDIR)/copybtn.js \
  $(SRCDIR)/default.css \
  $(SRCDIR)/diff.js \
  $(SRCDIR)/diff.tcl \
  $(SRCDIR)/forum.js \
  $(SRCDIR)/fossil.bootstrap.js \
  $(SRCDIR)/fossil.confirmer.js \
  $(SRCDIR)/fossil.copybutton.js \
  $(SRCDIR)/fossil.diff.js \
  $(SRCDIR)/fossil.dom.js \
  $(SRCDIR)/fossil.fetch.js \
  $(SRCDIR)/fossil.numbered-lines.js \
  $(SRCDIR)/fossil.page.brlist.js \
  $(SRCDIR)/fossil.page.chat.js \
  $(SRCDIR)/fossil.page.fileedit.js \
  $(SRCDIR)/fossil.page.forumpost.js \
  $(SRCDIR)/fossil.page.pikchrshow.js \
  $(SRCDIR)/fossil.page.pikchrshowasm.js \
  $(SRCDIR)/fossil.page.whistory.js \
  $(SRCDIR)/fossil.page.wikiedit.js \
  $(SRCDIR)/fossil.pikchr.js \
  $(SRCDIR)/fossil.popupwidget.js \
  $(SRCDIR)/fossil.storage.js \
  $(SRCDIR)/fossil.tabs.js \
  $(SRCDIR)/fossil.wikiedit-wysiwyg.js \
  $(SRCDIR)/graph.js \
  $(SRCDIR)/hbmenu.js \
  $(SRCDIR)/href.js \
  $(SRCDIR)/login.js \
  $(SRCDIR)/markdown.md \
  $(SRCDIR)/menu.js \
  $(SRCDIR)/scroll.js \
  $(SRCDIR)/skin.js \
  $(SRCDIR)/sorttable.js \
  $(SRCDIR)/sounds/0.wav \
  $(SRCDIR)/sounds/1.wav \
  $(SRCDIR)/sounds/2.wav \
  $(SRCDIR)/sounds/3.wav \
  $(SRCDIR)/sounds/4.wav \
  $(SRCDIR)/sounds/5.wav \
  $(SRCDIR)/sounds/6.wav \
  $(SRCDIR)/sounds/7.wav \
  $(SRCDIR)/sounds/8.wav \
  $(SRCDIR)/sounds/9.wav \
  $(SRCDIR)/sounds/a.wav \
  $(SRCDIR)/sounds/b.wav \
  $(SRCDIR)/sounds/c.wav \
  $(SRCDIR)/sounds/d.wav \
  $(SRCDIR)/sounds/e.wav \
  $(SRCDIR)/sounds/f.wav \
  $(SRCDIR)/style.admin_log.css \
  $(SRCDIR)/style.chat.css \
  $(SRCDIR)/style.fileedit.css \
  $(SRCDIR)/style.pikchrshow.css \
  $(SRCDIR)/style.uvlist.css \
  $(SRCDIR)/style.wikiedit.css \
  $(SRCDIR)/tree.js \
  $(SRCDIR)/useredit.js \
  $(SRCDIR)/wiki.wiki

TRANS_SRC = \
  add_.c \
  allrepo_.c \
  attach_.c \
  bag_.c \
  blob_.c \
  branch_.c \
  browse_.c \
  captcha_.c \
  cgi_.c \
  checkin_.c \
  checkout_.c \
  clearsign_.c \
  clone_.c \
  comformat_.c \
  configure_.c \
  content_.c \
  db_.c \
  delta_.c \
  deltacmd_.c \
  descendants_.c \
  diff_.c \
  diffcmd_.c \
  doc_.c \
  encode_.c \
  file_.c \
  finfo_.c \
  graph_.c \
  http_.c \
  http_socket_.c \
  http_transport_.c \
  info_.c \
  login_.c \
  main_.c \
  manifest_.c \
  md5_.c \
  merge_.c \
  merge3_.c \
  name_.c \
  pivot_.c \
  pqueue_.c \
  printf_.c \
  rebuild_.c \
  report_.c \
  rss_.c \
  schema_.c \
  search_.c \
  setup_.c \
  sha1_.c \
  shun_.c \
  skins_.c \
  stat_.c \
  style_.c \
  sync_.c \
  tag_.c \
  th_main_.c \
  timeline_.c \
  tkt_.c \
  tktsetup_.c \
  undo_.c \
  update_.c \
  url_.c \
  user_.c \
  verify_.c \
  vfile_.c \
  wiki_.c \
  wikiformat_.c \
  winhttp_.c \
  xfer_.c \
  zip_.c
  $(OBJDIR)/add_.c \
  $(OBJDIR)/ajax_.c \
  $(OBJDIR)/alerts_.c \
  $(OBJDIR)/allrepo_.c \
  $(OBJDIR)/attach_.c \
  $(OBJDIR)/backlink_.c \
  $(OBJDIR)/backoffice_.c \
  $(OBJDIR)/bag_.c \
  $(OBJDIR)/bisect_.c \
  $(OBJDIR)/blob_.c \
  $(OBJDIR)/branch_.c \
  $(OBJDIR)/browse_.c \
  $(OBJDIR)/builtin_.c \
  $(OBJDIR)/bundle_.c \
  $(OBJDIR)/cache_.c \
  $(OBJDIR)/capabilities_.c \
  $(OBJDIR)/captcha_.c \
  $(OBJDIR)/cgi_.c \
  $(OBJDIR)/chat_.c \
  $(OBJDIR)/checkin_.c \
  $(OBJDIR)/checkout_.c \
  $(OBJDIR)/clearsign_.c \
  $(OBJDIR)/clone_.c \
  $(OBJDIR)/color_.c \
  $(OBJDIR)/comformat_.c \
  $(OBJDIR)/configure_.c \
  $(OBJDIR)/content_.c \
  $(OBJDIR)/cookies_.c \
  $(OBJDIR)/db_.c \
  $(OBJDIR)/delta_.c \
  $(OBJDIR)/deltacmd_.c \
  $(OBJDIR)/deltafunc_.c \
  $(OBJDIR)/descendants_.c \
  $(OBJDIR)/diff_.c \
  $(OBJDIR)/diffcmd_.c \
  $(OBJDIR)/dispatch_.c \
  $(OBJDIR)/doc_.c \
  $(OBJDIR)/encode_.c \
  $(OBJDIR)/etag_.c \
  $(OBJDIR)/event_.c \
  $(OBJDIR)/export_.c \
  $(OBJDIR)/extcgi_.c \
  $(OBJDIR)/file_.c \
  $(OBJDIR)/fileedit_.c \
  $(OBJDIR)/finfo_.c \
  $(OBJDIR)/foci_.c \
  $(OBJDIR)/forum_.c \
  $(OBJDIR)/fshell_.c \
  $(OBJDIR)/fusefs_.c \
  $(OBJDIR)/fuzz_.c \
  $(OBJDIR)/glob_.c \
  $(OBJDIR)/graph_.c \
  $(OBJDIR)/gzip_.c \
  $(OBJDIR)/hname_.c \
  $(OBJDIR)/hook_.c \
  $(OBJDIR)/http_.c \
  $(OBJDIR)/http_socket_.c \
  $(OBJDIR)/http_ssl_.c \
  $(OBJDIR)/http_transport_.c \
  $(OBJDIR)/import_.c \
  $(OBJDIR)/info_.c \
  $(OBJDIR)/interwiki_.c \
  $(OBJDIR)/json_.c \
  $(OBJDIR)/json_artifact_.c \
  $(OBJDIR)/json_branch_.c \
  $(OBJDIR)/json_config_.c \
  $(OBJDIR)/json_diff_.c \
  $(OBJDIR)/json_dir_.c \
  $(OBJDIR)/json_finfo_.c \
  $(OBJDIR)/json_login_.c \
  $(OBJDIR)/json_query_.c \
  $(OBJDIR)/json_report_.c \
  $(OBJDIR)/json_status_.c \
  $(OBJDIR)/json_tag_.c \
  $(OBJDIR)/json_timeline_.c \
  $(OBJDIR)/json_user_.c \
  $(OBJDIR)/json_wiki_.c \
  $(OBJDIR)/leaf_.c \
  $(OBJDIR)/loadctrl_.c \
  $(OBJDIR)/login_.c \
  $(OBJDIR)/lookslike_.c \
  $(OBJDIR)/main_.c \
  $(OBJDIR)/manifest_.c \
  $(OBJDIR)/markdown_.c \
  $(OBJDIR)/markdown_html_.c \
  $(OBJDIR)/md5_.c \
  $(OBJDIR)/merge_.c \
  $(OBJDIR)/merge3_.c \
  $(OBJDIR)/moderate_.c \
  $(OBJDIR)/name_.c \
  $(OBJDIR)/patch_.c \
  $(OBJDIR)/path_.c \
  $(OBJDIR)/piechart_.c \
  $(OBJDIR)/pikchrshow_.c \
  $(OBJDIR)/pivot_.c \
  $(OBJDIR)/popen_.c \
  $(OBJDIR)/pqueue_.c \
  $(OBJDIR)/printf_.c \
  $(OBJDIR)/publish_.c \
  $(OBJDIR)/purge_.c \
  $(OBJDIR)/rebuild_.c \
  $(OBJDIR)/regexp_.c \
  $(OBJDIR)/repolist_.c \
  $(OBJDIR)/report_.c \
  $(OBJDIR)/rss_.c \
  $(OBJDIR)/schema_.c \
  $(OBJDIR)/search_.c \
  $(OBJDIR)/security_audit_.c \
  $(OBJDIR)/setup_.c \
  $(OBJDIR)/setupuser_.c \
  $(OBJDIR)/sha1_.c \
  $(OBJDIR)/sha1hard_.c \
  $(OBJDIR)/sha3_.c \
  $(OBJDIR)/shun_.c \
  $(OBJDIR)/sitemap_.c \
  $(OBJDIR)/skins_.c \
  $(OBJDIR)/smtp_.c \
  $(OBJDIR)/sqlcmd_.c \
  $(OBJDIR)/stash_.c \
  $(OBJDIR)/stat_.c \
  $(OBJDIR)/statrep_.c \
  $(OBJDIR)/style_.c \
  $(OBJDIR)/sync_.c \
  $(OBJDIR)/tag_.c \
  $(OBJDIR)/tar_.c \
  $(OBJDIR)/terminal_.c \
  $(OBJDIR)/th_main_.c \
  $(OBJDIR)/timeline_.c \
  $(OBJDIR)/tkt_.c \
  $(OBJDIR)/tktsetup_.c \
  $(OBJDIR)/undo_.c \
  $(OBJDIR)/unicode_.c \
  $(OBJDIR)/unversioned_.c \
  $(OBJDIR)/update_.c \
  $(OBJDIR)/url_.c \
  $(OBJDIR)/user_.c \
  $(OBJDIR)/utf8_.c \
  $(OBJDIR)/util_.c \
  $(OBJDIR)/verify_.c \
  $(OBJDIR)/vfile_.c \
  $(OBJDIR)/wiki_.c \
  $(OBJDIR)/wikiformat_.c \
  $(OBJDIR)/winfile_.c \
  $(OBJDIR)/winhttp_.c \
  $(OBJDIR)/xfer_.c \
  $(OBJDIR)/xfersetup_.c \
  $(OBJDIR)/zip_.c

OBJ = \
 $(OBJDIR)/add.o \
 $(OBJDIR)/ajax.o \
 $(OBJDIR)/alerts.o \
 $(OBJDIR)/allrepo.o \
 $(OBJDIR)/attach.o \
 $(OBJDIR)/backlink.o \
 $(OBJDIR)/backoffice.o \
 $(OBJDIR)/bag.o \
 $(OBJDIR)/bisect.o \
 $(OBJDIR)/blob.o \
 $(OBJDIR)/branch.o \
 $(OBJDIR)/browse.o \
 $(OBJDIR)/builtin.o \
 $(OBJDIR)/bundle.o \
 $(OBJDIR)/cache.o \
 $(OBJDIR)/capabilities.o \
 $(OBJDIR)/captcha.o \
 $(OBJDIR)/cgi.o \
 $(OBJDIR)/chat.o \
 $(OBJDIR)/checkin.o \
 $(OBJDIR)/checkout.o \
 $(OBJDIR)/clearsign.o \
 $(OBJDIR)/clone.o \
 $(OBJDIR)/color.o \
 $(OBJDIR)/comformat.o \
 $(OBJDIR)/configure.o \
 $(OBJDIR)/content.o \
 $(OBJDIR)/cookies.o \
 $(OBJDIR)/db.o \
 $(OBJDIR)/delta.o \
 $(OBJDIR)/deltacmd.o \
 $(OBJDIR)/deltafunc.o \
 $(OBJDIR)/descendants.o \
 $(OBJDIR)/diff.o \
 $(OBJDIR)/diffcmd.o \
 $(OBJDIR)/dispatch.o \
 $(OBJDIR)/doc.o \
 $(OBJDIR)/encode.o \
 $(OBJDIR)/etag.o \
 $(OBJDIR)/event.o \
 $(OBJDIR)/export.o \
 $(OBJDIR)/extcgi.o \
 $(OBJDIR)/file.o \
 $(OBJDIR)/fileedit.o \
 $(OBJDIR)/finfo.o \
 $(OBJDIR)/foci.o \
 $(OBJDIR)/forum.o \
 $(OBJDIR)/fshell.o \
 $(OBJDIR)/fusefs.o \
 $(OBJDIR)/fuzz.o \
 $(OBJDIR)/glob.o \
 $(OBJDIR)/graph.o \
 $(OBJDIR)/gzip.o \
 $(OBJDIR)/hname.o \
 $(OBJDIR)/hook.o \
 $(OBJDIR)/http.o \
 $(OBJDIR)/http_socket.o \
 $(OBJDIR)/http_ssl.o \
 $(OBJDIR)/http_transport.o \
 $(OBJDIR)/import.o \
 $(OBJDIR)/info.o \
 $(OBJDIR)/interwiki.o \
 $(OBJDIR)/json.o \
 $(OBJDIR)/json_artifact.o \
 $(OBJDIR)/json_branch.o \
 $(OBJDIR)/json_config.o \
 $(OBJDIR)/json_diff.o \
 $(OBJDIR)/json_dir.o \
 $(OBJDIR)/json_finfo.o \
 $(OBJDIR)/json_login.o \
 $(OBJDIR)/json_query.o \
 $(OBJDIR)/json_report.o \
 $(OBJDIR)/json_status.o \
 $(OBJDIR)/json_tag.o \
 $(OBJDIR)/json_timeline.o \
 $(OBJDIR)/json_user.o \
 $(OBJDIR)/json_wiki.o \
 $(OBJDIR)/leaf.o \
 $(OBJDIR)/loadctrl.o \
 $(OBJDIR)/login.o \
 $(OBJDIR)/lookslike.o \
 $(OBJDIR)/main.o \
 $(OBJDIR)/manifest.o \
 $(OBJDIR)/markdown.o \
 $(OBJDIR)/markdown_html.o \
 $(OBJDIR)/md5.o \
 $(OBJDIR)/merge.o \
 $(OBJDIR)/merge3.o \
 $(OBJDIR)/moderate.o \
 $(OBJDIR)/name.o \
 $(OBJDIR)/patch.o \
 $(OBJDIR)/path.o \
 $(OBJDIR)/piechart.o \
 $(OBJDIR)/pikchrshow.o \
 $(OBJDIR)/pivot.o \
 $(OBJDIR)/popen.o \
 $(OBJDIR)/pqueue.o \
 $(OBJDIR)/printf.o \
 $(OBJDIR)/publish.o \
 $(OBJDIR)/purge.o \
 $(OBJDIR)/rebuild.o \
 $(OBJDIR)/regexp.o \
 $(OBJDIR)/repolist.o \
 $(OBJDIR)/report.o \
 $(OBJDIR)/rss.o \
 $(OBJDIR)/schema.o \
 $(OBJDIR)/search.o \
 $(OBJDIR)/security_audit.o \
 $(OBJDIR)/setup.o \
 $(OBJDIR)/setupuser.o \
 $(OBJDIR)/sha1.o \
 $(OBJDIR)/sha1hard.o \
 $(OBJDIR)/sha3.o \
 $(OBJDIR)/shun.o \
 $(OBJDIR)/sitemap.o \
 $(OBJDIR)/skins.o \
 $(OBJDIR)/smtp.o \
 $(OBJDIR)/sqlcmd.o \
 $(OBJDIR)/stash.o \
 $(OBJDIR)/stat.o \
 $(OBJDIR)/statrep.o \
 $(OBJDIR)/style.o \
 $(OBJDIR)/sync.o \
 $(OBJDIR)/tag.o \
 $(OBJDIR)/tar.o \
 $(OBJDIR)/terminal.o \
 $(OBJDIR)/th_main.o \
 $(OBJDIR)/timeline.o \
 $(OBJDIR)/tkt.o \
 $(OBJDIR)/tktsetup.o \
 $(OBJDIR)/undo.o \
 $(OBJDIR)/unicode.o \
 $(OBJDIR)/unversioned.o \
 $(OBJDIR)/update.o \
 $(OBJDIR)/url.o \
 $(OBJDIR)/user.o \
 $(OBJDIR)/utf8.o \
 $(OBJDIR)/util.o \
 $(OBJDIR)/verify.o \
 $(OBJDIR)/vfile.o \
 $(OBJDIR)/wiki.o \
 $(OBJDIR)/wikiformat.o \
 $(OBJDIR)/winhttp.o \
 $(OBJDIR)/xfer.o \
 $(OBJDIR)/zip.o

 $(OBJDIR)/winfile.o \
 $(OBJDIR)/winhttp.o \
 $(OBJDIR)/xfer.o \
 $(OBJDIR)/xfersetup.o \
APPNAME = fossil$(E)

 $(OBJDIR)/zip.o


all:	$(OBJDIR) $(APPNAME)

install:	$(APPNAME)
	mv $(APPNAME) $(INSTALLDIR)
install:	all
	mkdir -p $(INSTALLDIR)
	cp $(APPNAME) $(INSTALLDIR)

codecheck:	$(TRANS_SRC) $(OBJDIR)/codecheck1
	$(OBJDIR)/codecheck1 $(TRANS_SRC)

$(OBJDIR):
	-mkdir $(OBJDIR)

translate:	$(SRCDIR)/translate.c
	$(BCC) -o translate $(SRCDIR)/translate.c
$(OBJDIR)/translate:	$(SRCDIR_tools)/translate.c
	$(XBCC) -o $(OBJDIR)/translate $(SRCDIR_tools)/translate.c

makeheaders:	$(SRCDIR)/makeheaders.c
	$(BCC) -o makeheaders $(SRCDIR)/makeheaders.c
$(OBJDIR)/makeheaders:	$(SRCDIR_tools)/makeheaders.c
	$(XBCC) -o $(OBJDIR)/makeheaders $(SRCDIR_tools)/makeheaders.c

mkindex:	$(SRCDIR)/mkindex.c
	$(BCC) -o mkindex $(SRCDIR)/mkindex.c
$(OBJDIR)/mkindex:	$(SRCDIR_tools)/mkindex.c
	$(XBCC) -o $(OBJDIR)/mkindex $(SRCDIR_tools)/mkindex.c

$(OBJDIR)/mkbuiltin:	$(SRCDIR_tools)/mkbuiltin.c
	$(XBCC) -o $(OBJDIR)/mkbuiltin $(SRCDIR_tools)/mkbuiltin.c

$(OBJDIR)/mkversion:	$(SRCDIR_tools)/mkversion.c
	$(XBCC) -o $(OBJDIR)/mkversion $(SRCDIR_tools)/mkversion.c

$(OBJDIR)/codecheck1:	$(SRCDIR_tools)/codecheck1.c
	$(XBCC) -o $(OBJDIR)/codecheck1 $(SRCDIR_tools)/codecheck1.c

# Run the test suite.
# Other flags that can be included in TESTFLAGS are:
#
#  -halt     Stop testing after the first failed test
#  -keep     Keep the temporary workspace for debugging
#  -prot     Write a detailed log of the tests to the file ./prot
#  -verbose  Include even more details in the output
#  -quiet    Hide most output from the terminal
#  -strict   Treat known bugs as failures
#
# TESTFLAGS can also include names of specific test files to limit
# the run to just those test cases.
#
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME) $(TESTFLAGS)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION $(OBJDIR)/mkversion $(OBJDIR)/phony.h
	$(OBJDIR)/mkversion $(SRCDIR)/../manifest.uuid \
		$(SRCDIR)/../manifest \
		$(SRCDIR)/../VERSION >$(OBJDIR)/VERSION.h

$(OBJDIR)/phony.h:
	# Force rebuild of VERSION.h every time we run "make"

# Setup the options used to compile the included SQLite library.
SQLITE_OPTIONS = -DNDEBUG=1 \
                 -DSQLITE_DQS=0 \
                 -DSQLITE_THREADSAFE=0 \
                 -DSQLITE_DEFAULT_MEMSTATUS=0 \
                 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                 -DSQLITE_OMIT_DECLTYPE \
                 -DSQLITE_OMIT_DEPRECATED \
                 -DSQLITE_OMIT_PROGRESS_CALLBACK \
                 -DSQLITE_OMIT_SHARED_CACHE \
                 -DSQLITE_OMIT_LOAD_EXTENSION \
                 -DSQLITE_MAX_EXPR_DEPTH=0 \
                 -DSQLITE_ENABLE_LOCKING_STYLE=0 \
                 -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 -DSQLITE_ENABLE_FTS4 \
                 -DSQLITE_ENABLE_DBSTAT_VTAB \
                 -DSQLITE_ENABLE_FTS5 \
                 -DSQLITE_ENABLE_STMTVTAB \
                 -DSQLITE_HAVE_ZLIB \
                 -DSQLITE_ENABLE_DBPAGE_VTAB \
                 -DSQLITE_TRUSTED_SCHEMA=0 \
                 -DHAVE_USLEEP

# Setup the options used to compile the included SQLite shell.
SHELL_OPTIONS = -DNDEBUG=1 \
                -DSQLITE_DQS=0 \
                -DSQLITE_THREADSAFE=0 \
                -DSQLITE_DEFAULT_MEMSTATUS=0 \
                -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                -DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                -DSQLITE_OMIT_DECLTYPE \
                -DSQLITE_OMIT_DEPRECATED \
                -DSQLITE_OMIT_PROGRESS_CALLBACK \
                -DSQLITE_OMIT_SHARED_CACHE \
                -DSQLITE_OMIT_LOAD_EXTENSION \
                -DSQLITE_MAX_EXPR_DEPTH=0 \
                -DSQLITE_ENABLE_LOCKING_STYLE=0 \
                -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                -DSQLITE_ENABLE_FTS4 \
                -DSQLITE_ENABLE_DBSTAT_VTAB \
                -DSQLITE_ENABLE_FTS5 \
                -DSQLITE_ENABLE_STMTVTAB \
                -DSQLITE_HAVE_ZLIB \
                -DSQLITE_ENABLE_DBPAGE_VTAB \
                -DSQLITE_TRUSTED_SCHEMA=0 \
                -DHAVE_USLEEP \
                -Dmain=sqlite3_shell \
                -DSQLITE_SHELL_IS_UTF8=1 \
                -DSQLITE_OMIT_LOAD_EXTENSION=1 \
                -DUSE_SYSTEM_SQLITE=$(USE_SYSTEM_SQLITE) \
                -DSQLITE_SHELL_DBNAME_PROC=sqlcmd_get_dbname \
                -DSQLITE_SHELL_INIT_PROC=sqlcmd_init_proc

# Setup the options used to compile the included Pikchr formatter.
PIKCHR_OPTIONS = -DPIKCHR_TOKEN_LIMIT=10000
# WARNING. DANGER. Running the testsuite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
test:	$(APPNAME)
	$(TCLSH) test/tester.tcl $(APPNAME)

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0 or 1.
# If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system SQLite will be linked
# using -lsqlite3.
#
# Closely related is SQLITE3_ORIGIN, with the same numeric mapping plus
# a value of 2 means that we are building a client-provided sqlite3.c.
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o
SQLITE3_OBJ.1 = $(OBJDIR)/sqlite3-see.o
# SQLITE3_OBJ.2 is set by the configure process
SQLITE3_OBJ.  = $(SQLITE3_OBJ.0)
SQLITE3_OBJ   = $(SQLITE3_OBJ.$(SQLITE3_ORIGIN))

# The USE_LINENOISE variable may be undefined, set to 0, or set
# to 1. If it is set to 0, then there is no need to build or link
# the linenoise.o object.
LINENOISE_DEF.0 =
LINENOISE_DEF.1 = -DHAVE_LINENOISE=2
LINENOISE_DEF.  = $(LINENOISE_DEF.0)
LINENOISE_OBJ.0 =
LINENOISE_OBJ.1 = $(OBJDIR)/linenoise.o
LINENOISE_OBJ.  = $(LINENOISE_OBJ.0)

# The USE_SEE variable may be undefined, 0 or 1.  If undefined or 0,
# in-tree SQLite is used.  If 1, then sqlite3-see.c (not part of the
# source tree) is used and extra flags are provided to enable the
# SQLite Encryption Extension.
VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest
	awk '{ printf "#define MANIFEST_UUID \"%s\"\n", $$1}'  $(SRCDIR)/../manifest.uuid >VERSION.h
	awk '{ printf "#define MANIFEST_VERSION \"[%.10s]\"\n", $$1}'  $(SRCDIR)/../manifest.uuid >>VERSION.h
	awk '$$1=="D"{printf "#define MANIFEST_DATE \"%s %s\"\n", substr($$2,1,10),substr($$2,12)}'  $(SRCDIR)/../manifest >>VERSION.h
SQLITE3_SRC.0 = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC.1 = $(SRCDIR_extsrc)/sqlite3-see.c
# SQLITE3_SRC.2 is set by top-level configure/makefile process.
SQLITE3_SRC. = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC = $(SQLITE3_SRC.$(SQLITE3_ORIGIN))
SQLITE3_SHELL_SRC.0 = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC.1 = $(SRCDIR_extsrc)/shell-see.c
# SQLITE3_SHELL_SRC.2 comes from the configure process
SQLITE3_SHELL_SRC. = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC = $(SQLITE3_SHELL_SRC.$(SQLITE3_ORIGIN))
SEE_FLAGS.0 =
SEE_FLAGS.1 = -DSQLITE_HAS_CODEC -DSQLITE_SHELL_DBKEY_PROC=fossil_key
SEE_FLAGS. =
SEE_FLAGS = $(SEE_FLAGS.$(USE_SEE))


EXTRAOBJ = \
 $(SQLITE3_OBJ.$(SQLITE3_ORIGIN)) \
 $(LINENOISE_OBJ.$(USE_LINENOISE)) \
 $(OBJDIR)/pikchr.o \
 $(OBJDIR)/shell.o \
 $(OBJDIR)/th.o \
 $(OBJDIR)/th_lang.o \
 $(OBJDIR)/th_tcl.o \
 $(OBJDIR)/cson_amalgamation.o


$(APPNAME):	headers $(OBJ) $(OBJDIR)/sqlite3.o $(OBJDIR)/th.o $(OBJDIR)/th_lang.o
	$(TCC) -o $(APPNAME) $(OBJ) $(OBJDIR)/sqlite3.o $(OBJDIR)/th.o $(OBJDIR)/th_lang.o $(LIB)
$(APPNAME):	$(OBJDIR)/headers $(OBJDIR)/codecheck1 $(EXTRAOBJ) $(OBJ)
	$(OBJDIR)/codecheck1 $(TRANS_SRC)
	$(TCC) $(TCCFLAGS) -o $(APPNAME) $(EXTRAOBJ) $(OBJ) $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:	
$(SRCDIR)/../manifest:
	# noop

clean:	
	rm -f $(OBJDIR)/*.o *_.c $(APPNAME) VERSION.h
	rm -f translate makeheaders mkindex page_index.h headers
	rm -f add.h allrepo.h attach.h bag.h blob.h branch.h browse.h captcha.h cgi.h checkin.h checkout.h clearsign.h clone.h comformat.h configure.h content.h db.h delta.h deltacmd.h descendants.h diff.h diffcmd.h doc.h encode.h file.h finfo.h graph.h http.h http_socket.h http_transport.h info.h login.h main.h manifest.h md5.h merge.h merge3.h name.h pivot.h pqueue.h printf.h rebuild.h report.h rss.h schema.h search.h setup.h sha1.h shun.h skins.h stat.h style.h sync.h tag.h th_main.h timeline.h tkt.h tktsetup.h undo.h update.h url.h user.h verify.h vfile.h wiki.h wikiformat.h winhttp.h xfer.h zip.h

page_index.h: $(TRANS_SRC) mkindex
	./mkindex $(TRANS_SRC) >$@
headers:	page_index.h makeheaders VERSION.h
clean:
	-rm -rf $(OBJDIR)/* $(APPNAME)


$(OBJDIR)/page_index.h: $(TRANS_SRC) $(OBJDIR)/mkindex
	$(OBJDIR)/mkindex $(TRANS_SRC) >$@

$(OBJDIR)/builtin_data.h: $(OBJDIR)/mkbuiltin $(EXTRA_FILES)
	$(OBJDIR)/mkbuiltin --prefix $(SRCDIR)/ $(EXTRA_FILES) >$@

$(OBJDIR)/headers:	$(OBJDIR)/page_index.h $(OBJDIR)/builtin_data.h $(OBJDIR)/makeheaders $(OBJDIR)/VERSION.h
	$(OBJDIR)/makeheaders $(OBJDIR)/add_.c:$(OBJDIR)/add.h \
	$(OBJDIR)/ajax_.c:$(OBJDIR)/ajax.h \
	$(OBJDIR)/alerts_.c:$(OBJDIR)/alerts.h \
	$(OBJDIR)/allrepo_.c:$(OBJDIR)/allrepo.h \
	$(OBJDIR)/attach_.c:$(OBJDIR)/attach.h \
	$(OBJDIR)/backlink_.c:$(OBJDIR)/backlink.h \
	$(OBJDIR)/backoffice_.c:$(OBJDIR)/backoffice.h \
	$(OBJDIR)/bag_.c:$(OBJDIR)/bag.h \
	$(OBJDIR)/bisect_.c:$(OBJDIR)/bisect.h \
	$(OBJDIR)/blob_.c:$(OBJDIR)/blob.h \
	$(OBJDIR)/branch_.c:$(OBJDIR)/branch.h \
	$(OBJDIR)/browse_.c:$(OBJDIR)/browse.h \
	$(OBJDIR)/builtin_.c:$(OBJDIR)/builtin.h \
	$(OBJDIR)/bundle_.c:$(OBJDIR)/bundle.h \
	$(OBJDIR)/cache_.c:$(OBJDIR)/cache.h \
	$(OBJDIR)/capabilities_.c:$(OBJDIR)/capabilities.h \
	$(OBJDIR)/captcha_.c:$(OBJDIR)/captcha.h \
	$(OBJDIR)/cgi_.c:$(OBJDIR)/cgi.h \
	$(OBJDIR)/chat_.c:$(OBJDIR)/chat.h \
	$(OBJDIR)/checkin_.c:$(OBJDIR)/checkin.h \
	$(OBJDIR)/checkout_.c:$(OBJDIR)/checkout.h \
	$(OBJDIR)/clearsign_.c:$(OBJDIR)/clearsign.h \
	$(OBJDIR)/clone_.c:$(OBJDIR)/clone.h \
	$(OBJDIR)/color_.c:$(OBJDIR)/color.h \
	$(OBJDIR)/comformat_.c:$(OBJDIR)/comformat.h \
	$(OBJDIR)/configure_.c:$(OBJDIR)/configure.h \
	$(OBJDIR)/content_.c:$(OBJDIR)/content.h \
	$(OBJDIR)/cookies_.c:$(OBJDIR)/cookies.h \
	$(OBJDIR)/db_.c:$(OBJDIR)/db.h \
	$(OBJDIR)/delta_.c:$(OBJDIR)/delta.h \
	$(OBJDIR)/deltacmd_.c:$(OBJDIR)/deltacmd.h \
	$(OBJDIR)/deltafunc_.c:$(OBJDIR)/deltafunc.h \
	$(OBJDIR)/descendants_.c:$(OBJDIR)/descendants.h \
	$(OBJDIR)/diff_.c:$(OBJDIR)/diff.h \
	$(OBJDIR)/diffcmd_.c:$(OBJDIR)/diffcmd.h \
	$(OBJDIR)/dispatch_.c:$(OBJDIR)/dispatch.h \
	$(OBJDIR)/doc_.c:$(OBJDIR)/doc.h \
	$(OBJDIR)/encode_.c:$(OBJDIR)/encode.h \
	$(OBJDIR)/etag_.c:$(OBJDIR)/etag.h \
	$(OBJDIR)/event_.c:$(OBJDIR)/event.h \
	$(OBJDIR)/export_.c:$(OBJDIR)/export.h \
	$(OBJDIR)/extcgi_.c:$(OBJDIR)/extcgi.h \
	$(OBJDIR)/file_.c:$(OBJDIR)/file.h \
	$(OBJDIR)/fileedit_.c:$(OBJDIR)/fileedit.h \
	$(OBJDIR)/finfo_.c:$(OBJDIR)/finfo.h \
	$(OBJDIR)/foci_.c:$(OBJDIR)/foci.h \
	$(OBJDIR)/forum_.c:$(OBJDIR)/forum.h \
	$(OBJDIR)/fshell_.c:$(OBJDIR)/fshell.h \
	$(OBJDIR)/fusefs_.c:$(OBJDIR)/fusefs.h \
	$(OBJDIR)/fuzz_.c:$(OBJDIR)/fuzz.h \
	$(OBJDIR)/glob_.c:$(OBJDIR)/glob.h \
	$(OBJDIR)/graph_.c:$(OBJDIR)/graph.h \
	$(OBJDIR)/gzip_.c:$(OBJDIR)/gzip.h \
	$(OBJDIR)/hname_.c:$(OBJDIR)/hname.h \
	$(OBJDIR)/hook_.c:$(OBJDIR)/hook.h \
	$(OBJDIR)/http_.c:$(OBJDIR)/http.h \
	$(OBJDIR)/http_socket_.c:$(OBJDIR)/http_socket.h \
	$(OBJDIR)/http_ssl_.c:$(OBJDIR)/http_ssl.h \
	$(OBJDIR)/http_transport_.c:$(OBJDIR)/http_transport.h \
	$(OBJDIR)/import_.c:$(OBJDIR)/import.h \
	$(OBJDIR)/info_.c:$(OBJDIR)/info.h \
	$(OBJDIR)/interwiki_.c:$(OBJDIR)/interwiki.h \
	$(OBJDIR)/json_.c:$(OBJDIR)/json.h \
	$(OBJDIR)/json_artifact_.c:$(OBJDIR)/json_artifact.h \
	$(OBJDIR)/json_branch_.c:$(OBJDIR)/json_branch.h \
	$(OBJDIR)/json_config_.c:$(OBJDIR)/json_config.h \
	$(OBJDIR)/json_diff_.c:$(OBJDIR)/json_diff.h \
	$(OBJDIR)/json_dir_.c:$(OBJDIR)/json_dir.h \
	$(OBJDIR)/json_finfo_.c:$(OBJDIR)/json_finfo.h \
	$(OBJDIR)/json_login_.c:$(OBJDIR)/json_login.h \
	$(OBJDIR)/json_query_.c:$(OBJDIR)/json_query.h \
	$(OBJDIR)/json_report_.c:$(OBJDIR)/json_report.h \
	$(OBJDIR)/json_status_.c:$(OBJDIR)/json_status.h \
	$(OBJDIR)/json_tag_.c:$(OBJDIR)/json_tag.h \
	$(OBJDIR)/json_timeline_.c:$(OBJDIR)/json_timeline.h \
	$(OBJDIR)/json_user_.c:$(OBJDIR)/json_user.h \
	$(OBJDIR)/json_wiki_.c:$(OBJDIR)/json_wiki.h \
	$(OBJDIR)/leaf_.c:$(OBJDIR)/leaf.h \
	$(OBJDIR)/loadctrl_.c:$(OBJDIR)/loadctrl.h \
	$(OBJDIR)/login_.c:$(OBJDIR)/login.h \
	$(OBJDIR)/lookslike_.c:$(OBJDIR)/lookslike.h \
	$(OBJDIR)/main_.c:$(OBJDIR)/main.h \
	$(OBJDIR)/manifest_.c:$(OBJDIR)/manifest.h \
	$(OBJDIR)/markdown_.c:$(OBJDIR)/markdown.h \
	$(OBJDIR)/markdown_html_.c:$(OBJDIR)/markdown_html.h \
	$(OBJDIR)/md5_.c:$(OBJDIR)/md5.h \
	$(OBJDIR)/merge_.c:$(OBJDIR)/merge.h \
	$(OBJDIR)/merge3_.c:$(OBJDIR)/merge3.h \
	$(OBJDIR)/moderate_.c:$(OBJDIR)/moderate.h \
	$(OBJDIR)/name_.c:$(OBJDIR)/name.h \
	$(OBJDIR)/patch_.c:$(OBJDIR)/patch.h \
	$(OBJDIR)/path_.c:$(OBJDIR)/path.h \
	$(OBJDIR)/piechart_.c:$(OBJDIR)/piechart.h \
	$(OBJDIR)/pikchrshow_.c:$(OBJDIR)/pikchrshow.h \
	$(OBJDIR)/pivot_.c:$(OBJDIR)/pivot.h \
	$(OBJDIR)/popen_.c:$(OBJDIR)/popen.h \
	$(OBJDIR)/pqueue_.c:$(OBJDIR)/pqueue.h \
	$(OBJDIR)/printf_.c:$(OBJDIR)/printf.h \
	$(OBJDIR)/publish_.c:$(OBJDIR)/publish.h \
	$(OBJDIR)/purge_.c:$(OBJDIR)/purge.h \
	$(OBJDIR)/rebuild_.c:$(OBJDIR)/rebuild.h \
	$(OBJDIR)/regexp_.c:$(OBJDIR)/regexp.h \
	$(OBJDIR)/repolist_.c:$(OBJDIR)/repolist.h \
	$(OBJDIR)/report_.c:$(OBJDIR)/report.h \
	$(OBJDIR)/rss_.c:$(OBJDIR)/rss.h \
	$(OBJDIR)/schema_.c:$(OBJDIR)/schema.h \
	$(OBJDIR)/search_.c:$(OBJDIR)/search.h \
	$(OBJDIR)/security_audit_.c:$(OBJDIR)/security_audit.h \
	$(OBJDIR)/setup_.c:$(OBJDIR)/setup.h \
	$(OBJDIR)/setupuser_.c:$(OBJDIR)/setupuser.h \
	$(OBJDIR)/sha1_.c:$(OBJDIR)/sha1.h \
	$(OBJDIR)/sha1hard_.c:$(OBJDIR)/sha1hard.h \
	$(OBJDIR)/sha3_.c:$(OBJDIR)/sha3.h \
	$(OBJDIR)/shun_.c:$(OBJDIR)/shun.h \
	$(OBJDIR)/sitemap_.c:$(OBJDIR)/sitemap.h \
	$(OBJDIR)/skins_.c:$(OBJDIR)/skins.h \
	$(OBJDIR)/smtp_.c:$(OBJDIR)/smtp.h \
	$(OBJDIR)/sqlcmd_.c:$(OBJDIR)/sqlcmd.h \
	$(OBJDIR)/stash_.c:$(OBJDIR)/stash.h \
	$(OBJDIR)/stat_.c:$(OBJDIR)/stat.h \
	$(OBJDIR)/statrep_.c:$(OBJDIR)/statrep.h \
	$(OBJDIR)/style_.c:$(OBJDIR)/style.h \
	$(OBJDIR)/sync_.c:$(OBJDIR)/sync.h \
	$(OBJDIR)/tag_.c:$(OBJDIR)/tag.h \
	$(OBJDIR)/tar_.c:$(OBJDIR)/tar.h \
	$(OBJDIR)/terminal_.c:$(OBJDIR)/terminal.h \
	$(OBJDIR)/th_main_.c:$(OBJDIR)/th_main.h \
	$(OBJDIR)/timeline_.c:$(OBJDIR)/timeline.h \
	$(OBJDIR)/tkt_.c:$(OBJDIR)/tkt.h \
	$(OBJDIR)/tktsetup_.c:$(OBJDIR)/tktsetup.h \
	$(OBJDIR)/undo_.c:$(OBJDIR)/undo.h \
	$(OBJDIR)/unicode_.c:$(OBJDIR)/unicode.h \
	$(OBJDIR)/unversioned_.c:$(OBJDIR)/unversioned.h \
	$(OBJDIR)/update_.c:$(OBJDIR)/update.h \
	$(OBJDIR)/url_.c:$(OBJDIR)/url.h \
	$(OBJDIR)/user_.c:$(OBJDIR)/user.h \
	$(OBJDIR)/utf8_.c:$(OBJDIR)/utf8.h \
	$(OBJDIR)/util_.c:$(OBJDIR)/util.h \
	$(OBJDIR)/verify_.c:$(OBJDIR)/verify.h \
	$(OBJDIR)/vfile_.c:$(OBJDIR)/vfile.h \
	$(OBJDIR)/wiki_.c:$(OBJDIR)/wiki.h \
	$(OBJDIR)/wikiformat_.c:$(OBJDIR)/wikiformat.h \
	$(OBJDIR)/winfile_.c:$(OBJDIR)/winfile.h \
	$(OBJDIR)/winhttp_.c:$(OBJDIR)/winhttp.h \
	$(OBJDIR)/xfer_.c:$(OBJDIR)/xfer.h \
	$(OBJDIR)/xfersetup_.c:$(OBJDIR)/xfersetup.h \
	$(OBJDIR)/zip_.c:$(OBJDIR)/zip.h \
	$(SRCDIR_extsrc)/pikchr.c:$(OBJDIR)/pikchr.h \
	$(SRCDIR_extsrc)/sqlite3.h \
	$(SRCDIR)/th.h \
	$(OBJDIR)/VERSION.h 
	./makeheaders  add_.c:add.h allrepo_.c:allrepo.h attach_.c:attach.h bag_.c:bag.h blob_.c:blob.h branch_.c:branch.h browse_.c:browse.h captcha_.c:captcha.h cgi_.c:cgi.h checkin_.c:checkin.h checkout_.c:checkout.h clearsign_.c:clearsign.h clone_.c:clone.h comformat_.c:comformat.h configure_.c:configure.h content_.c:content.h db_.c:db.h delta_.c:delta.h deltacmd_.c:deltacmd.h descendants_.c:descendants.h diff_.c:diff.h diffcmd_.c:diffcmd.h doc_.c:doc.h encode_.c:encode.h file_.c:file.h finfo_.c:finfo.h graph_.c:graph.h http_.c:http.h http_socket_.c:http_socket.h http_transport_.c:http_transport.h info_.c:info.h login_.c:login.h main_.c:main.h manifest_.c:manifest.h md5_.c:md5.h merge_.c:merge.h merge3_.c:merge3.h name_.c:name.h pivot_.c:pivot.h pqueue_.c:pqueue.h printf_.c:printf.h rebuild_.c:rebuild.h report_.c:report.h rss_.c:rss.h schema_.c:schema.h search_.c:search.h setup_.c:setup.h sha1_.c:sha1.h shun_.c:shun.h skins_.c:skins.h stat_.c:stat.h style_.c:style.h sync_.c:sync.h tag_.c:tag.h th_main_.c:th_main.h timeline_.c:timeline.h tkt_.c:tkt.h tktsetup_.c:tktsetup.h undo_.c:undo.h update_.c:update.h url_.c:url.h user_.c:user.h verify_.c:verify.h vfile_.c:vfile.h wiki_.c:wiki.h wikiformat_.c:wikiformat.h winhttp_.c:winhttp.h xfer_.c:xfer.h zip_.c:zip.h $(SRCDIR)/sqlite3.h $(SRCDIR)/th.h VERSION.h
	touch headers
headers: Makefile
	touch $(OBJDIR)/headers
$(OBJDIR)/headers: Makefile
$(OBJDIR)/json.o $(OBJDIR)/json_artifact.o $(OBJDIR)/json_branch.o $(OBJDIR)/json_config.o $(OBJDIR)/json_diff.o $(OBJDIR)/json_dir.o $(OBJDIR)/json_finfo.o $(OBJDIR)/json_login.o $(OBJDIR)/json_query.o $(OBJDIR)/json_report.o $(OBJDIR)/json_status.o $(OBJDIR)/json_tag.o $(OBJDIR)/json_timeline.o $(OBJDIR)/json_user.o $(OBJDIR)/json_wiki.o : $(SRCDIR)/json_detail.h
Makefile:
add_.c:	$(SRCDIR)/add.c translate
	./translate $(SRCDIR)/add.c >add_.c
$(OBJDIR)/add_.c:	$(SRCDIR)/add.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/add.c >$@

$(OBJDIR)/add.o:	add_.c add.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/add.o -c add_.c
$(OBJDIR)/add.o:	$(OBJDIR)/add_.c $(OBJDIR)/add.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/add.o -c $(OBJDIR)/add_.c

$(OBJDIR)/add.h:	$(OBJDIR)/headers
add.h:	headers
allrepo_.c:	$(SRCDIR)/allrepo.c translate
	./translate $(SRCDIR)/allrepo.c >allrepo_.c

$(OBJDIR)/ajax_.c:	$(SRCDIR)/ajax.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/ajax.c >$@

$(OBJDIR)/ajax.o:	$(OBJDIR)/ajax_.c $(OBJDIR)/ajax.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/ajax.o -c $(OBJDIR)/ajax_.c

$(OBJDIR)/ajax.h:	$(OBJDIR)/headers

$(OBJDIR)/alerts_.c:	$(SRCDIR)/alerts.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/alerts.c >$@

$(OBJDIR)/alerts.o:	$(OBJDIR)/alerts_.c $(OBJDIR)/alerts.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/alerts.o -c $(OBJDIR)/alerts_.c

$(OBJDIR)/alerts.h:	$(OBJDIR)/headers

$(OBJDIR)/allrepo_.c:	$(SRCDIR)/allrepo.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/allrepo.c >$@

$(OBJDIR)/allrepo.o:	allrepo_.c allrepo.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/allrepo.o -c allrepo_.c
$(OBJDIR)/allrepo.o:	$(OBJDIR)/allrepo_.c $(OBJDIR)/allrepo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/allrepo.o -c $(OBJDIR)/allrepo_.c

allrepo.h:	headers
attach_.c:	$(SRCDIR)/attach.c translate
	./translate $(SRCDIR)/attach.c >attach_.c
$(OBJDIR)/allrepo.h:	$(OBJDIR)/headers

$(OBJDIR)/attach_.c:	$(SRCDIR)/attach.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/attach.c >$@

$(OBJDIR)/attach.o:	$(OBJDIR)/attach_.c $(OBJDIR)/attach.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/attach.o -c $(OBJDIR)/attach_.c

$(OBJDIR)/attach.o:	attach_.c attach.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/attach.o -c attach_.c
$(OBJDIR)/attach.h:	$(OBJDIR)/headers

$(OBJDIR)/backlink_.c:	$(SRCDIR)/backlink.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/backlink.c >$@

$(OBJDIR)/backlink.o:	$(OBJDIR)/backlink_.c $(OBJDIR)/backlink.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/backlink.o -c $(OBJDIR)/backlink_.c

$(OBJDIR)/backlink.h:	$(OBJDIR)/headers
attach.h:	headers
bag_.c:	$(SRCDIR)/bag.c translate
	./translate $(SRCDIR)/bag.c >bag_.c

$(OBJDIR)/backoffice_.c:	$(SRCDIR)/backoffice.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/backoffice.c >$@

$(OBJDIR)/backoffice.o:	$(OBJDIR)/backoffice_.c $(OBJDIR)/backoffice.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/backoffice.o -c $(OBJDIR)/backoffice_.c

$(OBJDIR)/backoffice.h:	$(OBJDIR)/headers

$(OBJDIR)/bag_.c:	$(SRCDIR)/bag.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/bag.c >$@

$(OBJDIR)/bag.o:	bag_.c bag.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bag.o -c bag_.c
$(OBJDIR)/bag.o:	$(OBJDIR)/bag_.c $(OBJDIR)/bag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bag.o -c $(OBJDIR)/bag_.c

$(OBJDIR)/bag.h:	$(OBJDIR)/headers
bag.h:	headers
blob_.c:	$(SRCDIR)/blob.c translate
	./translate $(SRCDIR)/blob.c >blob_.c

$(OBJDIR)/bisect_.c:	$(SRCDIR)/bisect.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/bisect.c >$@

$(OBJDIR)/bisect.o:	$(OBJDIR)/bisect_.c $(OBJDIR)/bisect.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bisect.o -c $(OBJDIR)/bisect_.c

$(OBJDIR)/bisect.h:	$(OBJDIR)/headers

$(OBJDIR)/blob_.c:	$(SRCDIR)/blob.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/blob.c >$@

$(OBJDIR)/blob.o:	blob_.c blob.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/blob.o -c blob_.c
$(OBJDIR)/blob.o:	$(OBJDIR)/blob_.c $(OBJDIR)/blob.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/blob.o -c $(OBJDIR)/blob_.c

$(OBJDIR)/blob.h:	$(OBJDIR)/headers
blob.h:	headers
branch_.c:	$(SRCDIR)/branch.c translate
	./translate $(SRCDIR)/branch.c >branch_.c

$(OBJDIR)/branch_.c:	$(SRCDIR)/branch.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/branch.c >$@

$(OBJDIR)/branch.o:	branch_.c branch.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/branch.o -c branch_.c
$(OBJDIR)/branch.o:	$(OBJDIR)/branch_.c $(OBJDIR)/branch.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/branch.o -c $(OBJDIR)/branch_.c

branch.h:	headers
browse_.c:	$(SRCDIR)/browse.c translate
	./translate $(SRCDIR)/browse.c >browse_.c
$(OBJDIR)/branch.h:	$(OBJDIR)/headers

$(OBJDIR)/browse_.c:	$(SRCDIR)/browse.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/browse.c >$@

$(OBJDIR)/browse.o:	$(OBJDIR)/browse_.c $(OBJDIR)/browse.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/browse.o -c $(OBJDIR)/browse_.c

$(OBJDIR)/browse.h:	$(OBJDIR)/headers

$(OBJDIR)/builtin_.c:	$(SRCDIR)/builtin.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/builtin.c >$@

$(OBJDIR)/builtin.o:	$(OBJDIR)/builtin_.c $(OBJDIR)/builtin.h $(OBJDIR)/builtin_data.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/builtin.o -c $(OBJDIR)/builtin_.c

$(OBJDIR)/builtin.h:	$(OBJDIR)/headers

$(OBJDIR)/bundle_.c:	$(SRCDIR)/bundle.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/bundle.c >$@

$(OBJDIR)/bundle.o:	$(OBJDIR)/bundle_.c $(OBJDIR)/bundle.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bundle.o -c $(OBJDIR)/bundle_.c

$(OBJDIR)/bundle.h:	$(OBJDIR)/headers

$(OBJDIR)/cache_.c:	$(SRCDIR)/cache.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/cache.c >$@
$(OBJDIR)/browse.o:	browse_.c browse.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/browse.o -c browse_.c

$(OBJDIR)/cache.o:	$(OBJDIR)/cache_.c $(OBJDIR)/cache.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cache.o -c $(OBJDIR)/cache_.c

$(OBJDIR)/cache.h:	$(OBJDIR)/headers
browse.h:	headers
captcha_.c:	$(SRCDIR)/captcha.c translate
	./translate $(SRCDIR)/captcha.c >captcha_.c

$(OBJDIR)/capabilities_.c:	$(SRCDIR)/capabilities.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/capabilities.c >$@

$(OBJDIR)/capabilities.o:	$(OBJDIR)/capabilities_.c $(OBJDIR)/capabilities.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/capabilities.o -c $(OBJDIR)/capabilities_.c

$(OBJDIR)/capabilities.h:	$(OBJDIR)/headers

$(OBJDIR)/captcha_.c:	$(SRCDIR)/captcha.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/captcha.c >$@

$(OBJDIR)/captcha.o:	captcha_.c captcha.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/captcha.o -c captcha_.c
$(OBJDIR)/captcha.o:	$(OBJDIR)/captcha_.c $(OBJDIR)/captcha.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/captcha.o -c $(OBJDIR)/captcha_.c

captcha.h:	headers
cgi_.c:	$(SRCDIR)/cgi.c translate
	./translate $(SRCDIR)/cgi.c >cgi_.c
$(OBJDIR)/captcha.h:	$(OBJDIR)/headers

$(OBJDIR)/cgi_.c:	$(SRCDIR)/cgi.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/cgi.c >$@

$(OBJDIR)/cgi.o:	$(OBJDIR)/cgi_.c $(OBJDIR)/cgi.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cgi.o -c $(OBJDIR)/cgi_.c

$(OBJDIR)/cgi.o:	cgi_.c cgi.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cgi.o -c cgi_.c
$(OBJDIR)/cgi.h:	$(OBJDIR)/headers

$(OBJDIR)/chat_.c:	$(SRCDIR)/chat.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/chat.c >$@

$(OBJDIR)/chat.o:	$(OBJDIR)/chat_.c $(OBJDIR)/chat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/chat.o -c $(OBJDIR)/chat_.c

$(OBJDIR)/chat.h:	$(OBJDIR)/headers
cgi.h:	headers
checkin_.c:	$(SRCDIR)/checkin.c translate
	./translate $(SRCDIR)/checkin.c >checkin_.c

$(OBJDIR)/checkin_.c:	$(SRCDIR)/checkin.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/checkin.c >$@

$(OBJDIR)/checkin.o:	checkin_.c checkin.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/checkin.o -c checkin_.c
$(OBJDIR)/checkin.o:	$(OBJDIR)/checkin_.c $(OBJDIR)/checkin.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/checkin.o -c $(OBJDIR)/checkin_.c

checkin.h:	headers
checkout_.c:	$(SRCDIR)/checkout.c translate
	./translate $(SRCDIR)/checkout.c >checkout_.c
$(OBJDIR)/checkin.h:	$(OBJDIR)/headers

$(OBJDIR)/checkout_.c:	$(SRCDIR)/checkout.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/checkout.c >$@

$(OBJDIR)/checkout.o:	$(OBJDIR)/checkout_.c $(OBJDIR)/checkout.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/checkout.o -c $(OBJDIR)/checkout_.c

$(OBJDIR)/checkout.h:	$(OBJDIR)/headers

$(OBJDIR)/clearsign_.c:	$(SRCDIR)/clearsign.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/clearsign.c >$@

$(OBJDIR)/clearsign.o:	$(OBJDIR)/clearsign_.c $(OBJDIR)/clearsign.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/clearsign.o -c $(OBJDIR)/clearsign_.c

$(OBJDIR)/clearsign.h:	$(OBJDIR)/headers

$(OBJDIR)/clone_.c:	$(SRCDIR)/clone.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/clone.c >$@

$(OBJDIR)/clone.o:	$(OBJDIR)/clone_.c $(OBJDIR)/clone.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/clone.o -c $(OBJDIR)/clone_.c

$(OBJDIR)/clone.h:	$(OBJDIR)/headers

$(OBJDIR)/color_.c:	$(SRCDIR)/color.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/color.c >$@

$(OBJDIR)/checkout.o:	checkout_.c checkout.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/checkout.o -c checkout_.c
$(OBJDIR)/color.o:	$(OBJDIR)/color_.c $(OBJDIR)/color.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/color.o -c $(OBJDIR)/color_.c

$(OBJDIR)/color.h:	$(OBJDIR)/headers
checkout.h:	headers
clearsign_.c:	$(SRCDIR)/clearsign.c translate
	./translate $(SRCDIR)/clearsign.c >clearsign_.c

$(OBJDIR)/comformat_.c:	$(SRCDIR)/comformat.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/comformat.c >$@

$(OBJDIR)/comformat.o:	$(OBJDIR)/comformat_.c $(OBJDIR)/comformat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/comformat.o -c $(OBJDIR)/comformat_.c
$(OBJDIR)/clearsign.o:	clearsign_.c clearsign.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/clearsign.o -c clearsign_.c

$(OBJDIR)/comformat.h:	$(OBJDIR)/headers

$(OBJDIR)/configure_.c:	$(SRCDIR)/configure.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/configure.c >$@

$(OBJDIR)/configure.o:	$(OBJDIR)/configure_.c $(OBJDIR)/configure.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/configure.o -c $(OBJDIR)/configure_.c

$(OBJDIR)/configure.h:	$(OBJDIR)/headers
clearsign.h:	headers
clone_.c:	$(SRCDIR)/clone.c translate
	./translate $(SRCDIR)/clone.c >clone_.c

$(OBJDIR)/content_.c:	$(SRCDIR)/content.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/content.c >$@

$(OBJDIR)/content.o:	$(OBJDIR)/content_.c $(OBJDIR)/content.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/content.o -c $(OBJDIR)/content_.c
$(OBJDIR)/clone.o:	clone_.c clone.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/clone.o -c clone_.c

$(OBJDIR)/content.h:	$(OBJDIR)/headers

$(OBJDIR)/cookies_.c:	$(SRCDIR)/cookies.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/cookies.c >$@

$(OBJDIR)/cookies.o:	$(OBJDIR)/cookies_.c $(OBJDIR)/cookies.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cookies.o -c $(OBJDIR)/cookies_.c

$(OBJDIR)/cookies.h:	$(OBJDIR)/headers

$(OBJDIR)/db_.c:	$(SRCDIR)/db.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/db.c >$@
clone.h:	headers
comformat_.c:	$(SRCDIR)/comformat.c translate
	./translate $(SRCDIR)/comformat.c >comformat_.c

$(OBJDIR)/db.o:	$(OBJDIR)/db_.c $(OBJDIR)/db.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/db.o -c $(OBJDIR)/db_.c

$(OBJDIR)/db.h:	$(OBJDIR)/headers

$(OBJDIR)/delta_.c:	$(SRCDIR)/delta.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/delta.c >$@

$(OBJDIR)/comformat.o:	comformat_.c comformat.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/comformat.o -c comformat_.c
$(OBJDIR)/delta.o:	$(OBJDIR)/delta_.c $(OBJDIR)/delta.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/delta.o -c $(OBJDIR)/delta_.c

$(OBJDIR)/delta.h:	$(OBJDIR)/headers
comformat.h:	headers
configure_.c:	$(SRCDIR)/configure.c translate
	./translate $(SRCDIR)/configure.c >configure_.c

$(OBJDIR)/deltacmd_.c:	$(SRCDIR)/deltacmd.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/deltacmd.c >$@

$(OBJDIR)/deltacmd.o:	$(OBJDIR)/deltacmd_.c $(OBJDIR)/deltacmd.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/deltacmd.o -c $(OBJDIR)/deltacmd_.c
$(OBJDIR)/configure.o:	configure_.c configure.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/configure.o -c configure_.c

$(OBJDIR)/deltacmd.h:	$(OBJDIR)/headers

$(OBJDIR)/deltafunc_.c:	$(SRCDIR)/deltafunc.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/deltafunc.c >$@

$(OBJDIR)/deltafunc.o:	$(OBJDIR)/deltafunc_.c $(OBJDIR)/deltafunc.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/deltafunc.o -c $(OBJDIR)/deltafunc_.c

$(OBJDIR)/deltafunc.h:	$(OBJDIR)/headers

$(OBJDIR)/descendants_.c:	$(SRCDIR)/descendants.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/descendants.c >$@

$(OBJDIR)/descendants.o:	$(OBJDIR)/descendants_.c $(OBJDIR)/descendants.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/descendants.o -c $(OBJDIR)/descendants_.c

$(OBJDIR)/descendants.h:	$(OBJDIR)/headers
configure.h:	headers
content_.c:	$(SRCDIR)/content.c translate
	./translate $(SRCDIR)/content.c >content_.c

$(OBJDIR)/diff_.c:	$(SRCDIR)/diff.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/diff.c >$@

$(OBJDIR)/content.o:	content_.c content.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/content.o -c content_.c
$(OBJDIR)/diff.o:	$(OBJDIR)/diff_.c $(OBJDIR)/diff.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/diff.o -c $(OBJDIR)/diff_.c

$(OBJDIR)/diff.h:	$(OBJDIR)/headers
content.h:	headers
db_.c:	$(SRCDIR)/db.c translate
	./translate $(SRCDIR)/db.c >db_.c

$(OBJDIR)/diffcmd_.c:	$(SRCDIR)/diffcmd.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/diffcmd.c >$@

$(OBJDIR)/diffcmd.o:	$(OBJDIR)/diffcmd_.c $(OBJDIR)/diffcmd.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/diffcmd.o -c $(OBJDIR)/diffcmd_.c
$(OBJDIR)/db.o:	db_.c db.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/db.o -c db_.c

$(OBJDIR)/diffcmd.h:	$(OBJDIR)/headers

$(OBJDIR)/dispatch_.c:	$(SRCDIR)/dispatch.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/dispatch.c >$@

$(OBJDIR)/dispatch.o:	$(OBJDIR)/dispatch_.c $(OBJDIR)/dispatch.h $(OBJDIR)/page_index.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/dispatch.o -c $(OBJDIR)/dispatch_.c

$(OBJDIR)/dispatch.h:	$(OBJDIR)/headers
db.h:	headers
delta_.c:	$(SRCDIR)/delta.c translate
	./translate $(SRCDIR)/delta.c >delta_.c

$(OBJDIR)/doc_.c:	$(SRCDIR)/doc.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/doc.c >$@

$(OBJDIR)/doc.o:	$(OBJDIR)/doc_.c $(OBJDIR)/doc.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/doc.o -c $(OBJDIR)/doc_.c

$(OBJDIR)/doc.h:	$(OBJDIR)/headers

$(OBJDIR)/encode_.c:	$(SRCDIR)/encode.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/encode.c >$@

$(OBJDIR)/delta.o:	delta_.c delta.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/delta.o -c delta_.c
$(OBJDIR)/encode.o:	$(OBJDIR)/encode_.c $(OBJDIR)/encode.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/encode.o -c $(OBJDIR)/encode_.c

$(OBJDIR)/encode.h:	$(OBJDIR)/headers
delta.h:	headers
deltacmd_.c:	$(SRCDIR)/deltacmd.c translate
	./translate $(SRCDIR)/deltacmd.c >deltacmd_.c

$(OBJDIR)/etag_.c:	$(SRCDIR)/etag.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/etag.c >$@

$(OBJDIR)/etag.o:	$(OBJDIR)/etag_.c $(OBJDIR)/etag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/etag.o -c $(OBJDIR)/etag_.c
$(OBJDIR)/deltacmd.o:	deltacmd_.c deltacmd.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/deltacmd.o -c deltacmd_.c

$(OBJDIR)/etag.h:	$(OBJDIR)/headers

$(OBJDIR)/event_.c:	$(SRCDIR)/event.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/event.c >$@

$(OBJDIR)/event.o:	$(OBJDIR)/event_.c $(OBJDIR)/event.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/event.o -c $(OBJDIR)/event_.c

$(OBJDIR)/event.h:	$(OBJDIR)/headers
deltacmd.h:	headers
descendants_.c:	$(SRCDIR)/descendants.c translate
	./translate $(SRCDIR)/descendants.c >descendants_.c

$(OBJDIR)/export_.c:	$(SRCDIR)/export.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/export.c >$@

$(OBJDIR)/export.o:	$(OBJDIR)/export_.c $(OBJDIR)/export.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/export.o -c $(OBJDIR)/export_.c
$(OBJDIR)/descendants.o:	descendants_.c descendants.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/descendants.o -c descendants_.c

$(OBJDIR)/export.h:	$(OBJDIR)/headers

$(OBJDIR)/extcgi_.c:	$(SRCDIR)/extcgi.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/extcgi.c >$@

$(OBJDIR)/extcgi.o:	$(OBJDIR)/extcgi_.c $(OBJDIR)/extcgi.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/extcgi.o -c $(OBJDIR)/extcgi_.c

$(OBJDIR)/extcgi.h:	$(OBJDIR)/headers
descendants.h:	headers
diff_.c:	$(SRCDIR)/diff.c translate
	./translate $(SRCDIR)/diff.c >diff_.c

$(OBJDIR)/file_.c:	$(SRCDIR)/file.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/file.c >$@

$(OBJDIR)/diff.o:	diff_.c diff.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/diff.o -c diff_.c
$(OBJDIR)/file.o:	$(OBJDIR)/file_.c $(OBJDIR)/file.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/file.o -c $(OBJDIR)/file_.c

$(OBJDIR)/file.h:	$(OBJDIR)/headers
diff.h:	headers
diffcmd_.c:	$(SRCDIR)/diffcmd.c translate
	./translate $(SRCDIR)/diffcmd.c >diffcmd_.c

$(OBJDIR)/fileedit_.c:	$(SRCDIR)/fileedit.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/fileedit.c >$@

$(OBJDIR)/fileedit.o:	$(OBJDIR)/fileedit_.c $(OBJDIR)/fileedit.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/fileedit.o -c $(OBJDIR)/fileedit_.c

$(OBJDIR)/fileedit.h:	$(OBJDIR)/headers

$(OBJDIR)/finfo_.c:	$(SRCDIR)/finfo.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/finfo.c >$@

$(OBJDIR)/finfo.o:	$(OBJDIR)/finfo_.c $(OBJDIR)/finfo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/finfo.o -c $(OBJDIR)/finfo_.c
$(OBJDIR)/diffcmd.o:	diffcmd_.c diffcmd.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/diffcmd.o -c diffcmd_.c

$(OBJDIR)/finfo.h:	$(OBJDIR)/headers

$(OBJDIR)/foci_.c:	$(SRCDIR)/foci.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/foci.c >$@

$(OBJDIR)/foci.o:	$(OBJDIR)/foci_.c $(OBJDIR)/foci.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/foci.o -c $(OBJDIR)/foci_.c

$(OBJDIR)/foci.h:	$(OBJDIR)/headers
diffcmd.h:	headers
doc_.c:	$(SRCDIR)/doc.c translate
	./translate $(SRCDIR)/doc.c >doc_.c

$(OBJDIR)/forum_.c:	$(SRCDIR)/forum.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/forum.c >$@

$(OBJDIR)/doc.o:	doc_.c doc.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/doc.o -c doc_.c
$(OBJDIR)/forum.o:	$(OBJDIR)/forum_.c $(OBJDIR)/forum.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/forum.o -c $(OBJDIR)/forum_.c

$(OBJDIR)/forum.h:	$(OBJDIR)/headers
doc.h:	headers
encode_.c:	$(SRCDIR)/encode.c translate
	./translate $(SRCDIR)/encode.c >encode_.c

$(OBJDIR)/fshell_.c:	$(SRCDIR)/fshell.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/fshell.c >$@

$(OBJDIR)/fshell.o:	$(OBJDIR)/fshell_.c $(OBJDIR)/fshell.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/fshell.o -c $(OBJDIR)/fshell_.c
$(OBJDIR)/encode.o:	encode_.c encode.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/encode.o -c encode_.c

$(OBJDIR)/fshell.h:	$(OBJDIR)/headers

$(OBJDIR)/fusefs_.c:	$(SRCDIR)/fusefs.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/fusefs.c >$@

$(OBJDIR)/fusefs.o:	$(OBJDIR)/fusefs_.c $(OBJDIR)/fusefs.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/fusefs.o -c $(OBJDIR)/fusefs_.c

$(OBJDIR)/fusefs.h:	$(OBJDIR)/headers
encode.h:	headers
file_.c:	$(SRCDIR)/file.c translate
	./translate $(SRCDIR)/file.c >file_.c

$(OBJDIR)/fuzz_.c:	$(SRCDIR)/fuzz.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/fuzz.c >$@

$(OBJDIR)/fuzz.o:	$(OBJDIR)/fuzz_.c $(OBJDIR)/fuzz.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/fuzz.o -c $(OBJDIR)/fuzz_.c
$(OBJDIR)/file.o:	file_.c file.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/file.o -c file_.c

$(OBJDIR)/fuzz.h:	$(OBJDIR)/headers

$(OBJDIR)/glob_.c:	$(SRCDIR)/glob.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/glob.c >$@

$(OBJDIR)/glob.o:	$(OBJDIR)/glob_.c $(OBJDIR)/glob.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/glob.o -c $(OBJDIR)/glob_.c

$(OBJDIR)/glob.h:	$(OBJDIR)/headers

$(OBJDIR)/graph_.c:	$(SRCDIR)/graph.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/graph.c >$@
file.h:	headers
finfo_.c:	$(SRCDIR)/finfo.c translate
	./translate $(SRCDIR)/finfo.c >finfo_.c

$(OBJDIR)/graph.o:	$(OBJDIR)/graph_.c $(OBJDIR)/graph.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/graph.o -c $(OBJDIR)/graph_.c

$(OBJDIR)/graph.h:	$(OBJDIR)/headers

$(OBJDIR)/gzip_.c:	$(SRCDIR)/gzip.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/gzip.c >$@

$(OBJDIR)/gzip.o:	$(OBJDIR)/gzip_.c $(OBJDIR)/gzip.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/gzip.o -c $(OBJDIR)/gzip_.c
$(OBJDIR)/finfo.o:	finfo_.c finfo.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/finfo.o -c finfo_.c

$(OBJDIR)/gzip.h:	$(OBJDIR)/headers

$(OBJDIR)/hname_.c:	$(SRCDIR)/hname.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/hname.c >$@

$(OBJDIR)/hname.o:	$(OBJDIR)/hname_.c $(OBJDIR)/hname.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/hname.o -c $(OBJDIR)/hname_.c

$(OBJDIR)/hname.h:	$(OBJDIR)/headers
finfo.h:	headers
graph_.c:	$(SRCDIR)/graph.c translate
	./translate $(SRCDIR)/graph.c >graph_.c

$(OBJDIR)/hook_.c:	$(SRCDIR)/hook.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/hook.c >$@

$(OBJDIR)/graph.o:	graph_.c graph.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/graph.o -c graph_.c
$(OBJDIR)/hook.o:	$(OBJDIR)/hook_.c $(OBJDIR)/hook.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/hook.o -c $(OBJDIR)/hook_.c

$(OBJDIR)/hook.h:	$(OBJDIR)/headers
graph.h:	headers
http_.c:	$(SRCDIR)/http.c translate
	./translate $(SRCDIR)/http.c >http_.c

$(OBJDIR)/http_.c:	$(SRCDIR)/http.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/http.c >$@

$(OBJDIR)/http.o:	http_.c http.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http.o -c http_.c
$(OBJDIR)/http.o:	$(OBJDIR)/http_.c $(OBJDIR)/http.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http.o -c $(OBJDIR)/http_.c

$(OBJDIR)/http.h:	$(OBJDIR)/headers
http.h:	headers
http_socket_.c:	$(SRCDIR)/http_socket.c translate
	./translate $(SRCDIR)/http_socket.c >http_socket_.c

$(OBJDIR)/http_socket_.c:	$(SRCDIR)/http_socket.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/http_socket.c >$@

$(OBJDIR)/http_socket.o:	http_socket_.c http_socket.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http_socket.o -c http_socket_.c
$(OBJDIR)/http_socket.o:	$(OBJDIR)/http_socket_.c $(OBJDIR)/http_socket.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http_socket.o -c $(OBJDIR)/http_socket_.c

http_socket.h:	headers
http_transport_.c:	$(SRCDIR)/http_transport.c translate
	./translate $(SRCDIR)/http_transport.c >http_transport_.c
$(OBJDIR)/http_socket.h:	$(OBJDIR)/headers

$(OBJDIR)/http_ssl_.c:	$(SRCDIR)/http_ssl.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/http_ssl.c >$@

$(OBJDIR)/http_ssl.o:	$(OBJDIR)/http_ssl_.c $(OBJDIR)/http_ssl.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http_ssl.o -c $(OBJDIR)/http_ssl_.c

$(OBJDIR)/http_ssl.h:	$(OBJDIR)/headers

$(OBJDIR)/http_transport_.c:	$(SRCDIR)/http_transport.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/http_transport.c >$@

$(OBJDIR)/http_transport.o:	http_transport_.c http_transport.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http_transport.o -c http_transport_.c
$(OBJDIR)/http_transport.o:	$(OBJDIR)/http_transport_.c $(OBJDIR)/http_transport.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/http_transport.o -c $(OBJDIR)/http_transport_.c

http_transport.h:	headers
info_.c:	$(SRCDIR)/info.c translate
	./translate $(SRCDIR)/info.c >info_.c
$(OBJDIR)/http_transport.h:	$(OBJDIR)/headers

$(OBJDIR)/import_.c:	$(SRCDIR)/import.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/import.c >$@

$(OBJDIR)/import.o:	$(OBJDIR)/import_.c $(OBJDIR)/import.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/import.o -c $(OBJDIR)/import_.c

$(OBJDIR)/import.h:	$(OBJDIR)/headers

$(OBJDIR)/info_.c:	$(SRCDIR)/info.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/info.c >$@

$(OBJDIR)/info.o:	info_.c info.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/info.o -c info_.c
$(OBJDIR)/info.o:	$(OBJDIR)/info_.c $(OBJDIR)/info.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/info.o -c $(OBJDIR)/info_.c

$(OBJDIR)/info.h:	$(OBJDIR)/headers
info.h:	headers
login_.c:	$(SRCDIR)/login.c translate
	./translate $(SRCDIR)/login.c >login_.c

$(OBJDIR)/interwiki_.c:	$(SRCDIR)/interwiki.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/interwiki.c >$@

$(OBJDIR)/interwiki.o:	$(OBJDIR)/interwiki_.c $(OBJDIR)/interwiki.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/interwiki.o -c $(OBJDIR)/interwiki_.c

$(OBJDIR)/interwiki.h:	$(OBJDIR)/headers

$(OBJDIR)/json_.c:	$(SRCDIR)/json.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json.c >$@

$(OBJDIR)/json.o:	$(OBJDIR)/json_.c $(OBJDIR)/json.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json.o -c $(OBJDIR)/json_.c

$(OBJDIR)/json.h:	$(OBJDIR)/headers

$(OBJDIR)/json_artifact_.c:	$(SRCDIR)/json_artifact.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_artifact.c >$@

$(OBJDIR)/json_artifact.o:	$(OBJDIR)/json_artifact_.c $(OBJDIR)/json_artifact.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_artifact.o -c $(OBJDIR)/json_artifact_.c

$(OBJDIR)/json_artifact.h:	$(OBJDIR)/headers

$(OBJDIR)/json_branch_.c:	$(SRCDIR)/json_branch.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_branch.c >$@

$(OBJDIR)/json_branch.o:	$(OBJDIR)/json_branch_.c $(OBJDIR)/json_branch.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_branch.o -c $(OBJDIR)/json_branch_.c

$(OBJDIR)/json_branch.h:	$(OBJDIR)/headers

$(OBJDIR)/json_config_.c:	$(SRCDIR)/json_config.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_config.c >$@
$(OBJDIR)/login.o:	login_.c login.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/login.o -c login_.c

$(OBJDIR)/json_config.o:	$(OBJDIR)/json_config_.c $(OBJDIR)/json_config.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_config.o -c $(OBJDIR)/json_config_.c

$(OBJDIR)/json_config.h:	$(OBJDIR)/headers
login.h:	headers
main_.c:	$(SRCDIR)/main.c translate
	./translate $(SRCDIR)/main.c >main_.c

$(OBJDIR)/json_diff_.c:	$(SRCDIR)/json_diff.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_diff.c >$@

$(OBJDIR)/json_diff.o:	$(OBJDIR)/json_diff_.c $(OBJDIR)/json_diff.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_diff.o -c $(OBJDIR)/json_diff_.c

$(OBJDIR)/json_diff.h:	$(OBJDIR)/headers

$(OBJDIR)/json_dir_.c:	$(SRCDIR)/json_dir.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_dir.c >$@

$(OBJDIR)/json_dir.o:	$(OBJDIR)/json_dir_.c $(OBJDIR)/json_dir.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_dir.o -c $(OBJDIR)/json_dir_.c
$(OBJDIR)/main.o:	main_.c main.h page_index.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/main.o -c main_.c

$(OBJDIR)/json_dir.h:	$(OBJDIR)/headers

$(OBJDIR)/json_finfo_.c:	$(SRCDIR)/json_finfo.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_finfo.c >$@

$(OBJDIR)/json_finfo.o:	$(OBJDIR)/json_finfo_.c $(OBJDIR)/json_finfo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_finfo.o -c $(OBJDIR)/json_finfo_.c

$(OBJDIR)/json_finfo.h:	$(OBJDIR)/headers

$(OBJDIR)/json_login_.c:	$(SRCDIR)/json_login.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_login.c >$@

$(OBJDIR)/json_login.o:	$(OBJDIR)/json_login_.c $(OBJDIR)/json_login.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_login.o -c $(OBJDIR)/json_login_.c

$(OBJDIR)/json_login.h:	$(OBJDIR)/headers
main.h:	headers
manifest_.c:	$(SRCDIR)/manifest.c translate
	./translate $(SRCDIR)/manifest.c >manifest_.c

$(OBJDIR)/json_query_.c:	$(SRCDIR)/json_query.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_query.c >$@

$(OBJDIR)/json_query.o:	$(OBJDIR)/json_query_.c $(OBJDIR)/json_query.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_query.o -c $(OBJDIR)/json_query_.c

$(OBJDIR)/json_query.h:	$(OBJDIR)/headers

$(OBJDIR)/json_report_.c:	$(SRCDIR)/json_report.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_report.c >$@

$(OBJDIR)/json_report.o:	$(OBJDIR)/json_report_.c $(OBJDIR)/json_report.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_report.o -c $(OBJDIR)/json_report_.c
$(OBJDIR)/manifest.o:	manifest_.c manifest.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/manifest.o -c manifest_.c

$(OBJDIR)/json_report.h:	$(OBJDIR)/headers

$(OBJDIR)/json_status_.c:	$(SRCDIR)/json_status.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_status.c >$@

$(OBJDIR)/json_status.o:	$(OBJDIR)/json_status_.c $(OBJDIR)/json_status.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_status.o -c $(OBJDIR)/json_status_.c

$(OBJDIR)/json_status.h:	$(OBJDIR)/headers
manifest.h:	headers
md5_.c:	$(SRCDIR)/md5.c translate
	./translate $(SRCDIR)/md5.c >md5_.c

$(OBJDIR)/json_tag_.c:	$(SRCDIR)/json_tag.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_tag.c >$@

$(OBJDIR)/md5.o:	md5_.c md5.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/md5.o -c md5_.c
$(OBJDIR)/json_tag.o:	$(OBJDIR)/json_tag_.c $(OBJDIR)/json_tag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_tag.o -c $(OBJDIR)/json_tag_.c

$(OBJDIR)/json_tag.h:	$(OBJDIR)/headers

$(OBJDIR)/json_timeline_.c:	$(SRCDIR)/json_timeline.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_timeline.c >$@

$(OBJDIR)/json_timeline.o:	$(OBJDIR)/json_timeline_.c $(OBJDIR)/json_timeline.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_timeline.o -c $(OBJDIR)/json_timeline_.c
md5.h:	headers
merge_.c:	$(SRCDIR)/merge.c translate
	./translate $(SRCDIR)/merge.c >merge_.c

$(OBJDIR)/json_timeline.h:	$(OBJDIR)/headers

$(OBJDIR)/json_user_.c:	$(SRCDIR)/json_user.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_user.c >$@

$(OBJDIR)/json_user.o:	$(OBJDIR)/json_user_.c $(OBJDIR)/json_user.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_user.o -c $(OBJDIR)/json_user_.c
$(OBJDIR)/merge.o:	merge_.c merge.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/merge.o -c merge_.c

$(OBJDIR)/json_user.h:	$(OBJDIR)/headers

$(OBJDIR)/json_wiki_.c:	$(SRCDIR)/json_wiki.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/json_wiki.c >$@

$(OBJDIR)/json_wiki.o:	$(OBJDIR)/json_wiki_.c $(OBJDIR)/json_wiki.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/json_wiki.o -c $(OBJDIR)/json_wiki_.c

$(OBJDIR)/json_wiki.h:	$(OBJDIR)/headers
merge.h:	headers
merge3_.c:	$(SRCDIR)/merge3.c translate
	./translate $(SRCDIR)/merge3.c >merge3_.c

$(OBJDIR)/leaf_.c:	$(SRCDIR)/leaf.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/leaf.c >$@

$(OBJDIR)/leaf.o:	$(OBJDIR)/leaf_.c $(OBJDIR)/leaf.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/leaf.o -c $(OBJDIR)/leaf_.c
$(OBJDIR)/merge3.o:	merge3_.c merge3.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/merge3.o -c merge3_.c

$(OBJDIR)/leaf.h:	$(OBJDIR)/headers

$(OBJDIR)/loadctrl_.c:	$(SRCDIR)/loadctrl.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/loadctrl.c >$@

$(OBJDIR)/loadctrl.o:	$(OBJDIR)/loadctrl_.c $(OBJDIR)/loadctrl.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/loadctrl.o -c $(OBJDIR)/loadctrl_.c

$(OBJDIR)/loadctrl.h:	$(OBJDIR)/headers
merge3.h:	headers
name_.c:	$(SRCDIR)/name.c translate
	./translate $(SRCDIR)/name.c >name_.c

$(OBJDIR)/login_.c:	$(SRCDIR)/login.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/login.c >$@

$(OBJDIR)/login.o:	$(OBJDIR)/login_.c $(OBJDIR)/login.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/login.o -c $(OBJDIR)/login_.c
$(OBJDIR)/name.o:	name_.c name.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/name.o -c name_.c

$(OBJDIR)/login.h:	$(OBJDIR)/headers

$(OBJDIR)/lookslike_.c:	$(SRCDIR)/lookslike.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/lookslike.c >$@

$(OBJDIR)/lookslike.o:	$(OBJDIR)/lookslike_.c $(OBJDIR)/lookslike.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/lookslike.o -c $(OBJDIR)/lookslike_.c

$(OBJDIR)/lookslike.h:	$(OBJDIR)/headers
name.h:	headers
pivot_.c:	$(SRCDIR)/pivot.c translate
	./translate $(SRCDIR)/pivot.c >pivot_.c

$(OBJDIR)/main_.c:	$(SRCDIR)/main.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/main.c >$@

$(OBJDIR)/pivot.o:	pivot_.c pivot.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/pivot.o -c pivot_.c
$(OBJDIR)/main.o:	$(OBJDIR)/main_.c $(OBJDIR)/main.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/main.o -c $(OBJDIR)/main_.c

$(OBJDIR)/main.h:	$(OBJDIR)/headers
pivot.h:	headers
pqueue_.c:	$(SRCDIR)/pqueue.c translate
	./translate $(SRCDIR)/pqueue.c >pqueue_.c

$(OBJDIR)/manifest_.c:	$(SRCDIR)/manifest.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/manifest.c >$@

$(OBJDIR)/manifest.o:	$(OBJDIR)/manifest_.c $(OBJDIR)/manifest.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/manifest.o -c $(OBJDIR)/manifest_.c

$(OBJDIR)/manifest.h:	$(OBJDIR)/headers

$(OBJDIR)/markdown_.c:	$(SRCDIR)/markdown.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/markdown.c >$@

$(OBJDIR)/markdown.o:	$(OBJDIR)/markdown_.c $(OBJDIR)/markdown.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/markdown.o -c $(OBJDIR)/markdown_.c
$(OBJDIR)/pqueue.o:	pqueue_.c pqueue.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/pqueue.o -c pqueue_.c

$(OBJDIR)/markdown.h:	$(OBJDIR)/headers

$(OBJDIR)/markdown_html_.c:	$(SRCDIR)/markdown_html.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/markdown_html.c >$@

$(OBJDIR)/markdown_html.o:	$(OBJDIR)/markdown_html_.c $(OBJDIR)/markdown_html.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/markdown_html.o -c $(OBJDIR)/markdown_html_.c

$(OBJDIR)/markdown_html.h:	$(OBJDIR)/headers
pqueue.h:	headers
printf_.c:	$(SRCDIR)/printf.c translate
	./translate $(SRCDIR)/printf.c >printf_.c

$(OBJDIR)/md5_.c:	$(SRCDIR)/md5.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/md5.c >$@

$(OBJDIR)/md5.o:	$(OBJDIR)/md5_.c $(OBJDIR)/md5.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/md5.o -c $(OBJDIR)/md5_.c
$(OBJDIR)/printf.o:	printf_.c printf.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/printf.o -c printf_.c

$(OBJDIR)/md5.h:	$(OBJDIR)/headers

$(OBJDIR)/merge_.c:	$(SRCDIR)/merge.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/merge.c >$@

$(OBJDIR)/merge.o:	$(OBJDIR)/merge_.c $(OBJDIR)/merge.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/merge.o -c $(OBJDIR)/merge_.c

$(OBJDIR)/merge.h:	$(OBJDIR)/headers
printf.h:	headers
rebuild_.c:	$(SRCDIR)/rebuild.c translate
	./translate $(SRCDIR)/rebuild.c >rebuild_.c

$(OBJDIR)/merge3_.c:	$(SRCDIR)/merge3.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/merge3.c >$@

$(OBJDIR)/merge3.o:	$(OBJDIR)/merge3_.c $(OBJDIR)/merge3.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/merge3.o -c $(OBJDIR)/merge3_.c

$(OBJDIR)/merge3.h:	$(OBJDIR)/headers

$(OBJDIR)/moderate_.c:	$(SRCDIR)/moderate.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/moderate.c >$@
$(OBJDIR)/rebuild.o:	rebuild_.c rebuild.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/rebuild.o -c rebuild_.c

$(OBJDIR)/moderate.o:	$(OBJDIR)/moderate_.c $(OBJDIR)/moderate.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/moderate.o -c $(OBJDIR)/moderate_.c

$(OBJDIR)/moderate.h:	$(OBJDIR)/headers
rebuild.h:	headers
report_.c:	$(SRCDIR)/report.c translate
	./translate $(SRCDIR)/report.c >report_.c

$(OBJDIR)/name_.c:	$(SRCDIR)/name.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/name.c >$@

$(OBJDIR)/name.o:	$(OBJDIR)/name_.c $(OBJDIR)/name.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/name.o -c $(OBJDIR)/name_.c
$(OBJDIR)/report.o:	report_.c report.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/report.o -c report_.c

$(OBJDIR)/name.h:	$(OBJDIR)/headers

$(OBJDIR)/patch_.c:	$(SRCDIR)/patch.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/patch.c >$@

$(OBJDIR)/patch.o:	$(OBJDIR)/patch_.c $(OBJDIR)/patch.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/patch.o -c $(OBJDIR)/patch_.c

$(OBJDIR)/patch.h:	$(OBJDIR)/headers
report.h:	headers
rss_.c:	$(SRCDIR)/rss.c translate
	./translate $(SRCDIR)/rss.c >rss_.c

$(OBJDIR)/path_.c:	$(SRCDIR)/path.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/path.c >$@

$(OBJDIR)/path.o:	$(OBJDIR)/path_.c $(OBJDIR)/path.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/path.o -c $(OBJDIR)/path_.c
$(OBJDIR)/rss.o:	rss_.c rss.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/rss.o -c rss_.c

$(OBJDIR)/path.h:	$(OBJDIR)/headers

$(OBJDIR)/piechart_.c:	$(SRCDIR)/piechart.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/piechart.c >$@

$(OBJDIR)/piechart.o:	$(OBJDIR)/piechart_.c $(OBJDIR)/piechart.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/piechart.o -c $(OBJDIR)/piechart_.c

$(OBJDIR)/piechart.h:	$(OBJDIR)/headers
rss.h:	headers
schema_.c:	$(SRCDIR)/schema.c translate
	./translate $(SRCDIR)/schema.c >schema_.c

$(OBJDIR)/pikchrshow_.c:	$(SRCDIR)/pikchrshow.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/pikchrshow.c >$@

$(OBJDIR)/pikchrshow.o:	$(OBJDIR)/pikchrshow_.c $(OBJDIR)/pikchrshow.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/pikchrshow.o -c $(OBJDIR)/pikchrshow_.c

$(OBJDIR)/pikchrshow.h:	$(OBJDIR)/headers

$(OBJDIR)/pivot_.c:	$(SRCDIR)/pivot.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/pivot.c >$@

$(OBJDIR)/pivot.o:	$(OBJDIR)/pivot_.c $(OBJDIR)/pivot.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/pivot.o -c $(OBJDIR)/pivot_.c
$(OBJDIR)/schema.o:	schema_.c schema.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/schema.o -c schema_.c

$(OBJDIR)/pivot.h:	$(OBJDIR)/headers

$(OBJDIR)/popen_.c:	$(SRCDIR)/popen.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/popen.c >$@

$(OBJDIR)/popen.o:	$(OBJDIR)/popen_.c $(OBJDIR)/popen.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/popen.o -c $(OBJDIR)/popen_.c

$(OBJDIR)/popen.h:	$(OBJDIR)/headers
schema.h:	headers
search_.c:	$(SRCDIR)/search.c translate
	./translate $(SRCDIR)/search.c >search_.c

$(OBJDIR)/pqueue_.c:	$(SRCDIR)/pqueue.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/pqueue.c >$@

$(OBJDIR)/pqueue.o:	$(OBJDIR)/pqueue_.c $(OBJDIR)/pqueue.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/pqueue.o -c $(OBJDIR)/pqueue_.c

$(OBJDIR)/pqueue.h:	$(OBJDIR)/headers

$(OBJDIR)/printf_.c:	$(SRCDIR)/printf.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/printf.c >$@

$(OBJDIR)/printf.o:	$(OBJDIR)/printf_.c $(OBJDIR)/printf.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/printf.o -c $(OBJDIR)/printf_.c
$(OBJDIR)/search.o:	search_.c search.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/search.o -c search_.c

$(OBJDIR)/printf.h:	$(OBJDIR)/headers

$(OBJDIR)/publish_.c:	$(SRCDIR)/publish.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/publish.c >$@

$(OBJDIR)/publish.o:	$(OBJDIR)/publish_.c $(OBJDIR)/publish.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/publish.o -c $(OBJDIR)/publish_.c

$(OBJDIR)/publish.h:	$(OBJDIR)/headers
search.h:	headers
setup_.c:	$(SRCDIR)/setup.c translate
	./translate $(SRCDIR)/setup.c >setup_.c

$(OBJDIR)/purge_.c:	$(SRCDIR)/purge.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/purge.c >$@

$(OBJDIR)/setup.o:	setup_.c setup.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/setup.o -c setup_.c
$(OBJDIR)/purge.o:	$(OBJDIR)/purge_.c $(OBJDIR)/purge.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/purge.o -c $(OBJDIR)/purge_.c

$(OBJDIR)/purge.h:	$(OBJDIR)/headers
setup.h:	headers
sha1_.c:	$(SRCDIR)/sha1.c translate
	./translate $(SRCDIR)/sha1.c >sha1_.c

$(OBJDIR)/rebuild_.c:	$(SRCDIR)/rebuild.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/rebuild.c >$@

$(OBJDIR)/rebuild.o:	$(OBJDIR)/rebuild_.c $(OBJDIR)/rebuild.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/rebuild.o -c $(OBJDIR)/rebuild_.c
$(OBJDIR)/sha1.o:	sha1_.c sha1.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha1.o -c sha1_.c

$(OBJDIR)/rebuild.h:	$(OBJDIR)/headers

$(OBJDIR)/regexp_.c:	$(SRCDIR)/regexp.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/regexp.c >$@

$(OBJDIR)/regexp.o:	$(OBJDIR)/regexp_.c $(OBJDIR)/regexp.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/regexp.o -c $(OBJDIR)/regexp_.c

$(OBJDIR)/regexp.h:	$(OBJDIR)/headers

$(OBJDIR)/repolist_.c:	$(SRCDIR)/repolist.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/repolist.c >$@
sha1.h:	headers
shun_.c:	$(SRCDIR)/shun.c translate
	./translate $(SRCDIR)/shun.c >shun_.c

$(OBJDIR)/repolist.o:	$(OBJDIR)/repolist_.c $(OBJDIR)/repolist.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/repolist.o -c $(OBJDIR)/repolist_.c

$(OBJDIR)/repolist.h:	$(OBJDIR)/headers

$(OBJDIR)/report_.c:	$(SRCDIR)/report.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/report.c >$@

$(OBJDIR)/report.o:	$(OBJDIR)/report_.c $(OBJDIR)/report.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/report.o -c $(OBJDIR)/report_.c
$(OBJDIR)/shun.o:	shun_.c shun.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/shun.o -c shun_.c

$(OBJDIR)/report.h:	$(OBJDIR)/headers

$(OBJDIR)/rss_.c:	$(SRCDIR)/rss.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/rss.c >$@

$(OBJDIR)/rss.o:	$(OBJDIR)/rss_.c $(OBJDIR)/rss.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/rss.o -c $(OBJDIR)/rss_.c

$(OBJDIR)/rss.h:	$(OBJDIR)/headers
shun.h:	headers
skins_.c:	$(SRCDIR)/skins.c translate
	./translate $(SRCDIR)/skins.c >skins_.c

$(OBJDIR)/schema_.c:	$(SRCDIR)/schema.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/schema.c >$@

$(OBJDIR)/skins.o:	skins_.c skins.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/skins.o -c skins_.c
$(OBJDIR)/schema.o:	$(OBJDIR)/schema_.c $(OBJDIR)/schema.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/schema.o -c $(OBJDIR)/schema_.c

$(OBJDIR)/schema.h:	$(OBJDIR)/headers

$(OBJDIR)/search_.c:	$(SRCDIR)/search.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/search.c >$@

$(OBJDIR)/search.o:	$(OBJDIR)/search_.c $(OBJDIR)/search.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/search.o -c $(OBJDIR)/search_.c

$(OBJDIR)/search.h:	$(OBJDIR)/headers
skins.h:	headers
stat_.c:	$(SRCDIR)/stat.c translate
	./translate $(SRCDIR)/stat.c >stat_.c

$(OBJDIR)/security_audit_.c:	$(SRCDIR)/security_audit.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/security_audit.c >$@

$(OBJDIR)/security_audit.o:	$(OBJDIR)/security_audit_.c $(OBJDIR)/security_audit.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/security_audit.o -c $(OBJDIR)/security_audit_.c

$(OBJDIR)/security_audit.h:	$(OBJDIR)/headers

$(OBJDIR)/setup_.c:	$(SRCDIR)/setup.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/setup.c >$@

$(OBJDIR)/setup.o:	$(OBJDIR)/setup_.c $(OBJDIR)/setup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/setup.o -c $(OBJDIR)/setup_.c
$(OBJDIR)/stat.o:	stat_.c stat.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/stat.o -c stat_.c

$(OBJDIR)/setup.h:	$(OBJDIR)/headers

$(OBJDIR)/setupuser_.c:	$(SRCDIR)/setupuser.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/setupuser.c >$@

$(OBJDIR)/setupuser.o:	$(OBJDIR)/setupuser_.c $(OBJDIR)/setupuser.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/setupuser.o -c $(OBJDIR)/setupuser_.c

$(OBJDIR)/setupuser.h:	$(OBJDIR)/headers
stat.h:	headers
style_.c:	$(SRCDIR)/style.c translate
	./translate $(SRCDIR)/style.c >style_.c

$(OBJDIR)/sha1_.c:	$(SRCDIR)/sha1.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/sha1.c >$@

$(OBJDIR)/style.o:	style_.c style.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/style.o -c style_.c
$(OBJDIR)/sha1.o:	$(OBJDIR)/sha1_.c $(OBJDIR)/sha1.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha1.o -c $(OBJDIR)/sha1_.c

$(OBJDIR)/sha1.h:	$(OBJDIR)/headers
style.h:	headers
sync_.c:	$(SRCDIR)/sync.c translate
	./translate $(SRCDIR)/sync.c >sync_.c

$(OBJDIR)/sha1hard_.c:	$(SRCDIR)/sha1hard.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/sha1hard.c >$@

$(OBJDIR)/sha1hard.o:	$(OBJDIR)/sha1hard_.c $(OBJDIR)/sha1hard.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha1hard.o -c $(OBJDIR)/sha1hard_.c
$(OBJDIR)/sync.o:	sync_.c sync.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sync.o -c sync_.c

$(OBJDIR)/sha1hard.h:	$(OBJDIR)/headers

$(OBJDIR)/sha3_.c:	$(SRCDIR)/sha3.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/sha3.c >$@

$(OBJDIR)/sha3.o:	$(OBJDIR)/sha3_.c $(OBJDIR)/sha3.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha3.o -c $(OBJDIR)/sha3_.c

$(OBJDIR)/sha3.h:	$(OBJDIR)/headers
sync.h:	headers
tag_.c:	$(SRCDIR)/tag.c translate
	./translate $(SRCDIR)/tag.c >tag_.c

$(OBJDIR)/shun_.c:	$(SRCDIR)/shun.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/shun.c >$@

$(OBJDIR)/tag.o:	tag_.c tag.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tag.o -c tag_.c
$(OBJDIR)/shun.o:	$(OBJDIR)/shun_.c $(OBJDIR)/shun.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/shun.o -c $(OBJDIR)/shun_.c

$(OBJDIR)/shun.h:	$(OBJDIR)/headers
tag.h:	headers
th_main_.c:	$(SRCDIR)/th_main.c translate
	./translate $(SRCDIR)/th_main.c >th_main_.c

$(OBJDIR)/sitemap_.c:	$(SRCDIR)/sitemap.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/sitemap.c >$@

$(OBJDIR)/sitemap.o:	$(OBJDIR)/sitemap_.c $(OBJDIR)/sitemap.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sitemap.o -c $(OBJDIR)/sitemap_.c

$(OBJDIR)/sitemap.h:	$(OBJDIR)/headers

$(OBJDIR)/skins_.c:	$(SRCDIR)/skins.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/skins.c >$@

$(OBJDIR)/skins.o:	$(OBJDIR)/skins_.c $(OBJDIR)/skins.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/skins.o -c $(OBJDIR)/skins_.c

$(OBJDIR)/skins.h:	$(OBJDIR)/headers
$(OBJDIR)/th_main.o:	th_main_.c th_main.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/th_main.o -c th_main_.c

$(OBJDIR)/smtp_.c:	$(SRCDIR)/smtp.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/smtp.c >$@

$(OBJDIR)/smtp.o:	$(OBJDIR)/smtp_.c $(OBJDIR)/smtp.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/smtp.o -c $(OBJDIR)/smtp_.c

$(OBJDIR)/smtp.h:	$(OBJDIR)/headers
th_main.h:	headers
timeline_.c:	$(SRCDIR)/timeline.c translate
	./translate $(SRCDIR)/timeline.c >timeline_.c

$(OBJDIR)/sqlcmd_.c:	$(SRCDIR)/sqlcmd.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/sqlcmd.c >$@

$(OBJDIR)/sqlcmd.o:	$(OBJDIR)/sqlcmd_.c $(OBJDIR)/sqlcmd.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sqlcmd.o -c $(OBJDIR)/sqlcmd_.c
$(OBJDIR)/timeline.o:	timeline_.c timeline.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/timeline.o -c timeline_.c

$(OBJDIR)/sqlcmd.h:	$(OBJDIR)/headers

$(OBJDIR)/stash_.c:	$(SRCDIR)/stash.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/stash.c >$@

$(OBJDIR)/stash.o:	$(OBJDIR)/stash_.c $(OBJDIR)/stash.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/stash.o -c $(OBJDIR)/stash_.c

$(OBJDIR)/stash.h:	$(OBJDIR)/headers
timeline.h:	headers
tkt_.c:	$(SRCDIR)/tkt.c translate
	./translate $(SRCDIR)/tkt.c >tkt_.c

$(OBJDIR)/stat_.c:	$(SRCDIR)/stat.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/stat.c >$@

$(OBJDIR)/stat.o:	$(OBJDIR)/stat_.c $(OBJDIR)/stat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/stat.o -c $(OBJDIR)/stat_.c

$(OBJDIR)/stat.h:	$(OBJDIR)/headers

$(OBJDIR)/statrep_.c:	$(SRCDIR)/statrep.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/statrep.c >$@

$(OBJDIR)/statrep.o:	$(OBJDIR)/statrep_.c $(OBJDIR)/statrep.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/statrep.o -c $(OBJDIR)/statrep_.c
$(OBJDIR)/tkt.o:	tkt_.c tkt.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tkt.o -c tkt_.c

$(OBJDIR)/statrep.h:	$(OBJDIR)/headers

$(OBJDIR)/style_.c:	$(SRCDIR)/style.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/style.c >$@

$(OBJDIR)/style.o:	$(OBJDIR)/style_.c $(OBJDIR)/style.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/style.o -c $(OBJDIR)/style_.c

$(OBJDIR)/style.h:	$(OBJDIR)/headers
tkt.h:	headers
tktsetup_.c:	$(SRCDIR)/tktsetup.c translate
	./translate $(SRCDIR)/tktsetup.c >tktsetup_.c

$(OBJDIR)/sync_.c:	$(SRCDIR)/sync.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/sync.c >$@

$(OBJDIR)/sync.o:	$(OBJDIR)/sync_.c $(OBJDIR)/sync.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sync.o -c $(OBJDIR)/sync_.c
$(OBJDIR)/tktsetup.o:	tktsetup_.c tktsetup.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tktsetup.o -c tktsetup_.c

$(OBJDIR)/sync.h:	$(OBJDIR)/headers

$(OBJDIR)/tag_.c:	$(SRCDIR)/tag.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/tag.c >$@

$(OBJDIR)/tag.o:	$(OBJDIR)/tag_.c $(OBJDIR)/tag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tag.o -c $(OBJDIR)/tag_.c

$(OBJDIR)/tag.h:	$(OBJDIR)/headers
tktsetup.h:	headers
undo_.c:	$(SRCDIR)/undo.c translate
	./translate $(SRCDIR)/undo.c >undo_.c

$(OBJDIR)/tar_.c:	$(SRCDIR)/tar.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/tar.c >$@

$(OBJDIR)/tar.o:	$(OBJDIR)/tar_.c $(OBJDIR)/tar.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tar.o -c $(OBJDIR)/tar_.c

$(OBJDIR)/tar.h:	$(OBJDIR)/headers

$(OBJDIR)/terminal_.c:	$(SRCDIR)/terminal.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/terminal.c >$@
$(OBJDIR)/undo.o:	undo_.c undo.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/undo.o -c undo_.c

$(OBJDIR)/terminal.o:	$(OBJDIR)/terminal_.c $(OBJDIR)/terminal.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/terminal.o -c $(OBJDIR)/terminal_.c

$(OBJDIR)/terminal.h:	$(OBJDIR)/headers
undo.h:	headers
update_.c:	$(SRCDIR)/update.c translate
	./translate $(SRCDIR)/update.c >update_.c

$(OBJDIR)/th_main_.c:	$(SRCDIR)/th_main.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/th_main.c >$@

$(OBJDIR)/th_main.o:	$(OBJDIR)/th_main_.c $(OBJDIR)/th_main.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/th_main.o -c $(OBJDIR)/th_main_.c
$(OBJDIR)/update.o:	update_.c update.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/update.o -c update_.c

$(OBJDIR)/th_main.h:	$(OBJDIR)/headers

$(OBJDIR)/timeline_.c:	$(SRCDIR)/timeline.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/timeline.c >$@

$(OBJDIR)/timeline.o:	$(OBJDIR)/timeline_.c $(OBJDIR)/timeline.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/timeline.o -c $(OBJDIR)/timeline_.c

$(OBJDIR)/timeline.h:	$(OBJDIR)/headers
update.h:	headers
url_.c:	$(SRCDIR)/url.c translate
	./translate $(SRCDIR)/url.c >url_.c

$(OBJDIR)/tkt_.c:	$(SRCDIR)/tkt.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/tkt.c >$@

$(OBJDIR)/tkt.o:	$(OBJDIR)/tkt_.c $(OBJDIR)/tkt.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tkt.o -c $(OBJDIR)/tkt_.c
$(OBJDIR)/url.o:	url_.c url.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/url.o -c url_.c

$(OBJDIR)/tkt.h:	$(OBJDIR)/headers

$(OBJDIR)/tktsetup_.c:	$(SRCDIR)/tktsetup.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/tktsetup.c >$@

$(OBJDIR)/tktsetup.o:	$(OBJDIR)/tktsetup_.c $(OBJDIR)/tktsetup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tktsetup.o -c $(OBJDIR)/tktsetup_.c

$(OBJDIR)/tktsetup.h:	$(OBJDIR)/headers

$(OBJDIR)/undo_.c:	$(SRCDIR)/undo.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/undo.c >$@

$(OBJDIR)/undo.o:	$(OBJDIR)/undo_.c $(OBJDIR)/undo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/undo.o -c $(OBJDIR)/undo_.c

$(OBJDIR)/undo.h:	$(OBJDIR)/headers
url.h:	headers
user_.c:	$(SRCDIR)/user.c translate
	./translate $(SRCDIR)/user.c >user_.c

$(OBJDIR)/unicode_.c:	$(SRCDIR)/unicode.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/unicode.c >$@

$(OBJDIR)/unicode.o:	$(OBJDIR)/unicode_.c $(OBJDIR)/unicode.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/unicode.o -c $(OBJDIR)/unicode_.c
$(OBJDIR)/user.o:	user_.c user.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/user.o -c user_.c

$(OBJDIR)/unicode.h:	$(OBJDIR)/headers

$(OBJDIR)/unversioned_.c:	$(SRCDIR)/unversioned.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/unversioned.c >$@

$(OBJDIR)/unversioned.o:	$(OBJDIR)/unversioned_.c $(OBJDIR)/unversioned.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/unversioned.o -c $(OBJDIR)/unversioned_.c

$(OBJDIR)/unversioned.h:	$(OBJDIR)/headers

$(OBJDIR)/update_.c:	$(SRCDIR)/update.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/update.c >$@

$(OBJDIR)/update.o:	$(OBJDIR)/update_.c $(OBJDIR)/update.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/update.o -c $(OBJDIR)/update_.c

$(OBJDIR)/update.h:	$(OBJDIR)/headers
user.h:	headers
verify_.c:	$(SRCDIR)/verify.c translate
	./translate $(SRCDIR)/verify.c >verify_.c

$(OBJDIR)/url_.c:	$(SRCDIR)/url.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/url.c >$@

$(OBJDIR)/verify.o:	verify_.c verify.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/verify.o -c verify_.c
$(OBJDIR)/url.o:	$(OBJDIR)/url_.c $(OBJDIR)/url.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/url.o -c $(OBJDIR)/url_.c

$(OBJDIR)/url.h:	$(OBJDIR)/headers
verify.h:	headers
vfile_.c:	$(SRCDIR)/vfile.c translate
	./translate $(SRCDIR)/vfile.c >vfile_.c

$(OBJDIR)/user_.c:	$(SRCDIR)/user.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/user.c >$@

$(OBJDIR)/user.o:	$(OBJDIR)/user_.c $(OBJDIR)/user.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/user.o -c $(OBJDIR)/user_.c
$(OBJDIR)/vfile.o:	vfile_.c vfile.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/vfile.o -c vfile_.c

$(OBJDIR)/user.h:	$(OBJDIR)/headers

$(OBJDIR)/utf8_.c:	$(SRCDIR)/utf8.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/utf8.c >$@

$(OBJDIR)/utf8.o:	$(OBJDIR)/utf8_.c $(OBJDIR)/utf8.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/utf8.o -c $(OBJDIR)/utf8_.c

$(OBJDIR)/utf8.h:	$(OBJDIR)/headers
vfile.h:	headers
wiki_.c:	$(SRCDIR)/wiki.c translate
	./translate $(SRCDIR)/wiki.c >wiki_.c

$(OBJDIR)/util_.c:	$(SRCDIR)/util.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/util.c >$@

$(OBJDIR)/util.o:	$(OBJDIR)/util_.c $(OBJDIR)/util.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/util.o -c $(OBJDIR)/util_.c
$(OBJDIR)/wiki.o:	wiki_.c wiki.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wiki.o -c wiki_.c

$(OBJDIR)/util.h:	$(OBJDIR)/headers

$(OBJDIR)/verify_.c:	$(SRCDIR)/verify.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/verify.c >$@

$(OBJDIR)/verify.o:	$(OBJDIR)/verify_.c $(OBJDIR)/verify.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/verify.o -c $(OBJDIR)/verify_.c

$(OBJDIR)/verify.h:	$(OBJDIR)/headers

$(OBJDIR)/vfile_.c:	$(SRCDIR)/vfile.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/vfile.c >$@
wiki.h:	headers
wikiformat_.c:	$(SRCDIR)/wikiformat.c translate
	./translate $(SRCDIR)/wikiformat.c >wikiformat_.c

$(OBJDIR)/vfile.o:	$(OBJDIR)/vfile_.c $(OBJDIR)/vfile.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/vfile.o -c $(OBJDIR)/vfile_.c

$(OBJDIR)/vfile.h:	$(OBJDIR)/headers

$(OBJDIR)/wiki_.c:	$(SRCDIR)/wiki.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/wiki.c >$@

$(OBJDIR)/wiki.o:	$(OBJDIR)/wiki_.c $(OBJDIR)/wiki.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wiki.o -c $(OBJDIR)/wiki_.c

$(OBJDIR)/wiki.h:	$(OBJDIR)/headers

$(OBJDIR)/wikiformat_.c:	$(SRCDIR)/wikiformat.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/wikiformat.c >$@

$(OBJDIR)/wikiformat.o:	wikiformat_.c wikiformat.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wikiformat.o -c wikiformat_.c
$(OBJDIR)/wikiformat.o:	$(OBJDIR)/wikiformat_.c $(OBJDIR)/wikiformat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wikiformat.o -c $(OBJDIR)/wikiformat_.c

wikiformat.h:	headers
winhttp_.c:	$(SRCDIR)/winhttp.c translate
	./translate $(SRCDIR)/winhttp.c >winhttp_.c
$(OBJDIR)/wikiformat.h:	$(OBJDIR)/headers

$(OBJDIR)/winfile_.c:	$(SRCDIR)/winfile.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/winfile.c >$@

$(OBJDIR)/winhttp.o:	winhttp_.c winhttp.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winhttp.o -c winhttp_.c
$(OBJDIR)/winfile.o:	$(OBJDIR)/winfile_.c $(OBJDIR)/winfile.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winfile.o -c $(OBJDIR)/winfile_.c

$(OBJDIR)/winfile.h:	$(OBJDIR)/headers

$(OBJDIR)/winhttp_.c:	$(SRCDIR)/winhttp.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/winhttp.c >$@

$(OBJDIR)/winhttp.o:	$(OBJDIR)/winhttp_.c $(OBJDIR)/winhttp.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winhttp.o -c $(OBJDIR)/winhttp_.c

winhttp.h:	headers
xfer_.c:	$(SRCDIR)/xfer.c translate
	./translate $(SRCDIR)/xfer.c >xfer_.c
$(OBJDIR)/winhttp.h:	$(OBJDIR)/headers

$(OBJDIR)/xfer_.c:	$(SRCDIR)/xfer.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/xfer.c >$@

$(OBJDIR)/xfer.o:	xfer_.c xfer.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfer.o -c xfer_.c
$(OBJDIR)/xfer.o:	$(OBJDIR)/xfer_.c $(OBJDIR)/xfer.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfer.o -c $(OBJDIR)/xfer_.c

$(OBJDIR)/xfer.h:	$(OBJDIR)/headers
xfer.h:	headers
zip_.c:	$(SRCDIR)/zip.c translate
	./translate $(SRCDIR)/zip.c >zip_.c

$(OBJDIR)/xfersetup_.c:	$(SRCDIR)/xfersetup.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/xfersetup.c >$@

$(OBJDIR)/xfersetup.o:	$(OBJDIR)/xfersetup_.c $(OBJDIR)/xfersetup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfersetup.o -c $(OBJDIR)/xfersetup_.c

$(OBJDIR)/xfersetup.h:	$(OBJDIR)/headers

$(OBJDIR)/zip_.c:	$(SRCDIR)/zip.c $(OBJDIR)/translate
	$(OBJDIR)/translate $(SRCDIR)/zip.c >$@

$(OBJDIR)/zip.o:	zip_.c zip.h  $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/zip.o -c zip_.c
$(OBJDIR)/zip.o:	$(OBJDIR)/zip_.c $(OBJDIR)/zip.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/zip.o -c $(OBJDIR)/zip_.c

zip.h:	headers
$(OBJDIR)/sqlite3.o:	$(SRCDIR)/sqlite3.c
	$(XTCC) -DSQLITE_OMIT_LOAD_EXTENSION=1 -DSQLITE_THREADSAFE=0 -DSQLITE_DEFAULT_FILE_FORMAT=4 -Dlocaltime=fossil_localtime -DSQLITE_ENABLE_LOCKING_STYLE=0 -c $(SRCDIR)/sqlite3.c -o $(OBJDIR)/sqlite3.o
$(OBJDIR)/zip.h:	$(OBJDIR)/headers

$(SQLITE3_OBJ):	$(SQLITE3_SRC)
	$(XTCC) $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $(SEE_FLAGS) \
		-c $(SQLITE3_SRC) -o $@
$(OBJDIR)/shell.o:	$(SQLITE3_SHELL_SRC) $(SRCDIR_extsrc)/sqlite3.h
	$(XTCC) $(SHELL_OPTIONS) $(SHELL_CFLAGS) $(SEE_FLAGS) $(LINENOISE_DEF.$(USE_LINENOISE)) -c $(SQLITE3_SHELL_SRC) -o $@

$(OBJDIR)/linenoise.o:	$(SRCDIR_extsrc)/linenoise.c $(SRCDIR_extsrc)/linenoise.h
	$(XTCC) -c $(SRCDIR_extsrc)/linenoise.c -o $@

$(OBJDIR)/th.o:	$(SRCDIR)/th.c
	$(XTCC) -I$(SRCDIR) -c $(SRCDIR)/th.c -o $(OBJDIR)/th.o
	$(XTCC) -c $(SRCDIR)/th.c -o $@

$(OBJDIR)/th_lang.o:	$(SRCDIR)/th_lang.c
	$(XTCC) -I$(SRCDIR) -c $(SRCDIR)/th_lang.c -o $(OBJDIR)/th_lang.o
	$(XTCC) -c $(SRCDIR)/th_lang.c -o $@

$(OBJDIR)/th_tcl.o:	$(SRCDIR)/th_tcl.c
	$(XTCC) -c $(SRCDIR)/th_tcl.c -o $@


$(OBJDIR)/pikchr.o:	$(SRCDIR_extsrc)/pikchr.c
	$(XTCC) $(PIKCHR_OPTIONS) -c $(SRCDIR_extsrc)/pikchr.c -o $@

$(OBJDIR)/cson_amalgamation.o: $(SRCDIR_extsrc)/cson_amalgamation.c
	$(XTCC) -c $(SRCDIR_extsrc)/cson_amalgamation.c -o $@

$(SRCDIR_extsrc)/pikchr.js: $(SRCDIR_extsrc)/pikchr.c
	$(EMCC_WRAPPER) -o $@ $(EMCC_OPT) --no-entry \
        -sEXPORTED_RUNTIME_METHODS=cwrap,setValue,getValue,stackSave,stackRestore \
        -sEXPORTED_FUNCTIONS=_pikchr $(SRCDIR_extsrc)/pikchr.c \
        -sENVIRONMENT=web \
        -sMODULARIZE \
        -sEXPORT_NAME=initPikchrModule \
        --minify 0
	@chmod -x $(SRCDIR_extsrc)/pikchr.wasm
wasm: $(SRCDIR_extsrc)/pikchr.js

#
# compile_commands.json support...
#
# We have to avoid applying compile_commands support to the in-tree
# tools, as those compile with BCC, which may differ from TCC.
# e.g. BCC might be gcc (which does not support -MJ ...) while TCC is
# clang (which does).
#
# What follows is more verbose than strictly necessary because we're
# limited to POSIX make syntax.
all:
compile-commands-dir.yes = $(OBJDIR)
compile-commands-dir.no =
compile-commands-dir = $(compile-commands-dir.$(MAKE_COMPILATION_DB))
compile-command-args.yes = -MJ $(TOPDIR)/$(compile-commands-dir)/$(@F:.o=.o.json)
compile-command-args.no =
TCCFLAGS += $(compile-command-args.$(MAKE_COMPILATION_DB))
compile_commands.json = $(TOPDIR)/compile_commands.json
# compile_commands.json is a concatenation of the .o.json files
# generated by the compilation process via TCCFLAGS. We have a
# potential race condition in parallel builds, where a .o.json file is
# not yet written to completion before compile_commands.json is
# processed. How to resolve that in a way compatible with POSIX make
# is unclear.
#
# This obscure sed bit ensures that the resulting JSON array does not
# have a trailing comma.
$(compile_commands.json): $(OBJ)
	@-rm -f $@
	@{ echo '['; cat $(compile-commands-dir)/*.o.json | tr '\n' ' ' | sed -e 's/, $$//'; echo ']'; } > $@
	@echo "Generated $@"
compile-commands.no:
compile-commands.yes: $(compile_commands.json)
all: compile-commands.$(MAKE_COMPILATION_DB)
clean: compile-commands-clean
compile-commands-clean:
	rm -fr $(compile_commands.json)

#
# End compile_commands.json support
#

#
# The list of all the targets that do not correspond to real files. This stops
# 'make' from getting confused when someone makes an error in a rule.
#

.PHONY: all install test clean
.PHONY: compile-commands-clean compile-commands-dir

Deleted src/makeheaders.c.
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static const char ident[] = "@(#) $Header: /cvstrac/cvstrac/makeheaders.c,v 1.4 2005/03/16 22:17:51 drh Exp $";
/*
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
** appropriate header files.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <memory.h>
#include <sys/stat.h>
#include <assert.h>
#ifndef WIN32
# include <unistd.h>
#else
# include <string.h>
#endif

/*
** Macros for debugging.
*/
#ifdef DEBUG
static int debugMask = 0;
# define debug0(F,M)       if( (F)&debugMask ){ fprintf(stderr,M); }
# define debug1(F,M,A)     if( (F)&debugMask ){ fprintf(stderr,M,A); }
# define debug2(F,M,A,B)   if( (F)&debugMask ){ fprintf(stderr,M,A,B); }
# define debug3(F,M,A,B,C) if( (F)&debugMask ){ fprintf(stderr,M,A,B,C); }
# define PARSER      0x00000001
# define DECL_DUMP   0x00000002
# define TOKENIZER   0x00000004
#else
# define debug0(Flags, Format)
# define debug1(Flags, Format, A)
# define debug2(Flags, Format, A, B)
# define debug3(Flags, Format, A, B, C)
#endif

/*
** The following macros are purely for the purpose of testing this
** program on itself.  They don't really contribute to the code.
*/
#define INTERFACE 1
#define EXPORT_INTERFACE 1
#define EXPORT

/*
** Each token in a source file is represented by an instance of
** the following structure.  Tokens are collected onto a list.
*/
typedef struct Token Token;
struct Token {
  const char *zText;      /* The text of the token */
  int nText;              /* Number of characters in the token's text */
  int eType;              /* The type of this token */
  int nLine;              /* The line number on which the token starts */
  Token *pComment;        /* Most recent block comment before this token */
  Token *pNext;           /* Next token on the list */
  Token *pPrev;           /* Previous token on the list */
};

/*
** During tokenization, information about the state of the input
** stream is held in an instance of the following structure
*/
typedef struct InStream InStream;
struct InStream {
  const char *z;          /* Complete text of the input */
  int i;                  /* Next character to read from the input */
  int nLine;              /* The line number for character z[i] */
};

/*
** Each declaration in the C or C++ source files is parsed out and stored as
** an instance of the following structure.
**
** A "forward declaration" is a declaration that an object exists that
** doesn't tell about the objects structure.  A typical forward declaration
** is:
**
**          struct Xyzzy;
**
** Not every object has a forward declaration.  If it does, thought, the
** forward declaration will be contained in the zFwd field for C and
** the zFwdCpp for C++.  The zDecl field contains the complete 
** declaration text.  
*/
typedef struct Decl Decl;
struct Decl {
  char *zName;       /* Name of the object being declared.  The appearance
                     ** of this name is a source file triggers the declaration
                     ** to be added to the header for that file. */
  char *zFile;       /* File from which extracted.  */
  char *zIf;         /* Surround the declaration with this #if */
  char *zFwd;        /* A forward declaration.  NULL if there is none. */
  char *zFwdCpp;     /* Use this forward declaration for C++. */
  char *zDecl;       /* A full declaration of this object */
  char *zExtra;      /* Extra declaration text inserted into class objects */
  int extraType;     /* Last public:, protected: or private: in zExtraDecl */
  struct Include *pInclude;   /* #includes that come before this declaration */
  int flags;         /* See the "Properties" below */
  Token *pComment;   /* A block comment associated with this declaration */
  Token tokenCode;   /* Implementation of functions and procedures */
  Decl *pSameName;   /* Next declaration with the same "zName" */
  Decl *pSameHash;   /* Next declaration with same hash but different zName */
  Decl *pNext;       /* Next declaration with a different name */
};

/*
** Properties associated with declarations.
**
** DP_Forward and DP_Declared are used during the generation of a single
** header file in order to prevent duplicate declarations and definitions.
** DP_Forward is set after the object has been given a forward declaration
** and DP_Declared is set after the object gets a full declarations.
** (Example:  A forward declaration is "typedef struct Abc Abc;" and the
** full declaration is "struct Abc { int a; float b; };".)
**
** The DP_Export and DP_Local flags are more permanent.  They mark objects
** that have EXPORT scope and LOCAL scope respectively.  If both of these
** marks are missing, then the object has library scope.  The meanings of
** the scopes are as follows:
**
**    LOCAL scope         The object is only usable within the file in
**                        which it is declared.
**
**    library scope       The object is visible and usable within other
**                        files in the same project.  By if the project is
**                        a library, then the object is not visible to users
**                        of the library.  (i.e. the object does not appear
**                        in the output when using the -H option.)
**
**    EXPORT scope        The object is visible and usable everywhere.
**
** The DP_Flag is a temporary use flag that is used during processing to
** prevent an infinite loop.  It's use is localized.  
**
** The DP_Cplusplus, DP_ExternCReqd and DP_ExternReqd flags are permanent
** and are used to specify what type of declaration the object requires.
*/
#define DP_Forward      0x001   /* Has a forward declaration in this file */
#define DP_Declared     0x002   /* Has a full declaration in this file */
#define DP_Export       0x004   /* Export this declaration */
#define DP_Local        0x008   /* Declare in its home file only */
#define DP_Flag         0x010   /* Use to mark a subset of a Decl list
                                ** for special processing */
#define DP_Cplusplus    0x020   /* Has C++ linkage and cannot appear in a
                                ** C header file */
#define DP_ExternCReqd  0x040   /* Prepend 'extern "C"' in a C++ header.
                                ** Prepend nothing in a C header */
#define DP_ExternReqd   0x080   /* Prepend 'extern "C"' in a C++ header if
                                ** DP_Cplusplus is not also set. If DP_Cplusplus
                                ** is set or this is a C header then
                                ** prepend 'extern' */

/*
** Convenience macros for dealing with declaration properties
*/
#define DeclHasProperty(D,P)    (((D)->flags&(P))==(P))
#define DeclHasAnyProperty(D,P) (((D)->flags&(P))!=0)
#define DeclSetProperty(D,P)    (D)->flags |= (P)
#define DeclClearProperty(D,P)  (D)->flags &= ~(P)

/*
** These are state properties of the parser.  Each of the values is
** distinct from the DP_ values above so that both can be used in
** the same "flags" field.
**
** Be careful not to confuse PS_Export with DP_Export or
** PS_Local with DP_Local.  Their names are similar, but the meanings
** of these flags are very different.
*/
#define PS_Extern        0x000800    /* "extern" has been seen */
#define PS_Export        0x001000    /* If between "#if EXPORT_INTERFACE" 
                                     ** and "#endif" */
#define PS_Export2       0x002000    /* If "EXPORT" seen */
#define PS_Typedef       0x004000    /* If "typedef" has been seen */
#define PS_Static        0x008000    /* If "static" has been seen */
#define PS_Interface     0x010000    /* If within #if INTERFACE..#endif */
#define PS_Method        0x020000    /* If "::" token has been seen */
#define PS_Local         0x040000    /* If within #if LOCAL_INTERFACE..#endif */
#define PS_Local2        0x080000    /* If "LOCAL" seen. */
#define PS_Public        0x100000    /* If "PUBLIC" seen. */
#define PS_Protected     0x200000    /* If "PROTECTED" seen. */
#define PS_Private       0x400000    /* If "PRIVATE" seen. */
#define PS_PPP           0x700000    /* If any of PUBLIC, PRIVATE, PROTECTED */

/*
** The following set of flags are ORed into the "flags" field of
** a Decl in order to identify what type of object is being
** declared.
*/
#define TY_Class         0x00100000
#define TY_Subroutine    0x00200000
#define TY_Macro         0x00400000
#define TY_Typedef       0x00800000
#define TY_Variable      0x01000000
#define TY_Structure     0x02000000
#define TY_Union         0x04000000
#define TY_Enumeration   0x08000000
#define TY_Defunct       0x10000000  /* Used to erase a declaration */

/*
** Each nested #if (or #ifdef or #ifndef) is stored in a stack of 
** instances of the following structure.
*/
typedef struct Ifmacro Ifmacro;
struct Ifmacro {
  int nLine;         /* Line number where this macro occurs */
  char *zCondition;  /* Text of the condition for this macro */
  Ifmacro *pNext;    /* Next down in the stack */
  int flags;         /* Can hold PS_Export, PS_Interface or PS_Local flags */
};

/*
** When parsing a file, we need to keep track of what other files have
** be #include-ed.  For each #include found, we create an instance of
** the following structure.
*/
typedef struct Include Include;
struct Include {
  char *zFile;       /* The name of file include.  Includes "" or <> */
  char *zIf;         /* If not NULL, #include should be enclosed in #if */
  char *zLabel;      /* A unique label used to test if this #include has
                      * appeared already in a file or not */
  Include *pNext;    /* Previous include file, or NULL if this is the first */
};

/*
** Identifiers found in a source file that might be used later to provoke
** the copying of a declaration into the corresponding header file are
** stored in a hash table as instances of the following structure.
*/
typedef struct Ident Ident;
struct Ident {
  char *zName;        /* The text of this identifier */
  Ident *pCollide;    /* Next identifier with the same hash */
  Ident *pNext;       /* Next identifier in a list of them all */
};

/*
** A complete table of identifiers is stored in an instance of
** the next structure.
*/
#define IDENT_HASH_SIZE 2237
typedef struct IdentTable IdentTable;
struct IdentTable {
  Ident *pList;                     /* List of all identifiers in this table */
  Ident *apTable[IDENT_HASH_SIZE];  /* The hash table */
};

/*
** The following structure holds all information for a single
** source file named on the command line of this program.
*/
typedef struct InFile InFile;
struct InFile {
  char *zSrc;              /* Name of input file */
  char *zHdr;              /* Name of the generated .h file for this input.
                           ** Will be NULL if input is to be scanned only */
  int flags;               /* One or more DP_, PS_ and/or TY_ flags */
  InFile *pNext;           /* Next input file in the list of them all */
  IdentTable idTable;      /* All identifiers in this input file */
};

/* 
** An unbounded string is able to grow without limit.  We use these
** to construct large in-memory strings from lots of smaller components.
*/
typedef struct String String;
struct String {
  int nAlloc;      /* Number of bytes allocated */
  int nUsed;       /* Number of bytes used (not counting null terminator) */
  char *zText;     /* Text of the string */
};

/*
** The following structure contains a lot of state information used
** while generating a .h file.  We put the information in this structure
** and pass around a pointer to this structure, rather than pass around
** all of the information separately.  This helps reduce the number of
** arguments to generator functions.
*/
typedef struct GenState GenState;
struct GenState {
  String *pStr;          /* Write output to this string */
  IdentTable *pTable;    /* A table holding the zLabel of every #include that
                          * has already been generated.  Used to avoid
                          * generating duplicate #includes. */
  const char *zIf;       /* If not NULL, then we are within a #if with
                          * this argument. */
  int nErr;              /* Number of errors */
  const char *zFilename; /* Name of the source file being scanned */
  int flags;             /* Various flags (DP_ and PS_ flags above) */
};

/*
** The following text line appears at the top of every file generated
** by this program.  By recognizing this line, the program can be sure
** never to read a file that it generated itself.
*/
const char zTopLine[] = 
  "/* \aThis file was automatically generated.  Do not edit! */\n";
#define nTopLine (sizeof(zTopLine)-1)

/*
** The name of the file currently being parsed.
*/
static char *zFilename;

/*
** The stack of #if macros for the file currently being parsed.
*/
static Ifmacro *ifStack = 0;

/*
** A list of all files that have been #included so far in a file being
** parsed.
*/
static Include *includeList = 0;

/*
** The last block comment seen.
*/
static Token *blockComment = 0;

/*
** The following flag is set if the -doc flag appears on the
** command line.
*/
static int doc_flag = 0;

/*
** If the following flag is set, then makeheaders will attempt to
** generate prototypes for static functions and procedures.
*/
static int proto_static = 0;

/*
** A list of all declarations.  The list is held together using the
** pNext field of the Decl structure.
*/
static Decl *pDeclFirst;    /* First on the list */
static Decl *pDeclLast;     /* Last on the list */

/*
** A hash table of all declarations
*/
#define DECL_HASH_SIZE 3371
static Decl *apTable[DECL_HASH_SIZE];

/*
** The TEST macro must be defined to something.  Make sure this is the
** case.
*/
#ifndef TEST
# define TEST 0
#endif

#ifdef NOT_USED
/*
** We do our own assertion macro so that we can have more control
** over debugging.
*/
#define Assert(X)    if(!(X)){ CantHappen(__LINE__); }
#define CANT_HAPPEN  CantHappen(__LINE__)
static void CantHappen(int iLine){
  fprintf(stderr,"Assertion failed on line %d\n",iLine);
  *(char*)1 = 0;  /* Force a core-dump */
}
#endif

/*
** Memory allocation functions that are guaranteed never to return NULL.
*/
static void *SafeMalloc(int nByte){
  void *p = malloc( nByte );
  if( p==0 ){
    fprintf(stderr,"Out of memory.  Can't allocate %d bytes.\n",nByte);
    exit(1);
  }
  return p;
}
static void SafeFree(void *pOld){
  if( pOld ){
    free(pOld);
  }
}
static void *SafeRealloc(void *pOld, int nByte){
  void *p;
  if( pOld==0 ){
    p = SafeMalloc(nByte);
  }else{
    p = realloc(pOld, nByte);
    if( p==0 ){
      fprintf(stderr,
        "Out of memory.  Can't enlarge an allocation to %d bytes\n",nByte);
      exit(1);
    }
  }
  return p;
}
static char *StrDup(const char *zSrc, int nByte){
  char *zDest;
  if( nByte<=0 ){
    nByte = strlen(zSrc);
  }
  zDest = SafeMalloc( nByte + 1 );
  strncpy(zDest,zSrc,nByte);
  zDest[nByte] = 0;
  return zDest;
}

/*
** Return TRUE if the character X can be part of an identifier
*/
#define ISALNUM(X)  ((X)=='_' || isalnum(X))

/*
** Routines for dealing with unbounded strings.
*/
static void StringInit(String *pStr){
  pStr->nAlloc = 0;
  pStr->nUsed = 0;
  pStr->zText = 0;
}
static void StringReset(String *pStr){
  SafeFree(pStr->zText);
  StringInit(pStr);
}
static void StringAppend(String *pStr, const char *zText, int nByte){
  if( nByte<=0 ){
    nByte = strlen(zText);
  }
  if( pStr->nUsed + nByte >= pStr->nAlloc ){
    if( pStr->nAlloc==0 ){
      pStr->nAlloc = nByte + 100;
      pStr->zText = SafeMalloc( pStr->nAlloc );
    }else{
      pStr->nAlloc = pStr->nAlloc*2 + nByte;
      pStr->zText = SafeRealloc(pStr->zText, pStr->nAlloc);
    }
  }
  strncpy(&pStr->zText[pStr->nUsed],zText,nByte);
  pStr->nUsed += nByte;
  pStr->zText[pStr->nUsed] = 0;
}
#define StringGet(S) ((S)->zText?(S)->zText:"")

/*
** Compute a hash on a string.  The number returned is a non-negative
** value between 0 and 2**31 - 1
*/
static int Hash(const char *z, int n){
  int h = 0;
  if( n<=0 ){
    n = strlen(z);
  }
  while( n-- ){
    h = h ^ (h<<5) ^ *z++;
  }
  return h & 0x7fffffff;
}

/*
** Given an identifier name, try to find a declaration for that
** identifier in the hash table.  If found, return a pointer to
** the Decl structure.  If not found, return 0.
*/
static Decl *FindDecl(const char *zName, int len){
  int h;
  Decl *p;

  if( len<=0 ){
    len = strlen(zName);
  }
  h = Hash(zName,len) % DECL_HASH_SIZE;
  p = apTable[h];
  while( p && (strncmp(p->zName,zName,len)!=0 || p->zName[len]!=0) ){
    p = p->pSameHash;
  }
  return p;
}

/*
** Install the given declaration both in the hash table and on
** the list of all declarations.
*/
static void InstallDecl(Decl *pDecl){
  int h;
  Decl *pOther;

  h = Hash(pDecl->zName,0) % DECL_HASH_SIZE;
  pOther = apTable[h];
  while( pOther && strcmp(pDecl->zName,pOther->zName)!=0 ){
    pOther = pOther->pSameHash;
  }
  if( pOther ){
    pDecl->pSameName = pOther->pSameName;
    pOther->pSameName = pDecl;
  }else{
    pDecl->pSameName = 0;
    pDecl->pSameHash = apTable[h];
    apTable[h] = pDecl;
  }
  pDecl->pNext = 0;
  if( pDeclFirst==0 ){
    pDeclFirst = pDeclLast = pDecl;
  }else{
    pDeclLast->pNext = pDecl;
    pDeclLast = pDecl;
  }
}

/*
** Look at the current ifStack.  If anything declared at the current
** position must be surrounded with
**
**      #if   STUFF
**      #endif
**
** Then this routine computes STUFF and returns a pointer to it.  Memory
** to hold the value returned is obtained from malloc().
*/
static char *GetIfString(void){
  Ifmacro *pIf;
  char *zResult = 0;
  int hasIf = 0;
  String str;

  for(pIf = ifStack; pIf; pIf=pIf->pNext){
    if( pIf->zCondition==0 || *pIf->zCondition==0 ) continue;
    if( !hasIf ){
      hasIf = 1;
      StringInit(&str);
    }else{
      StringAppend(&str," && ",4);
    }
    StringAppend(&str,pIf->zCondition,0);
  }
  if( hasIf ){
    zResult = StrDup(StringGet(&str),0);
    StringReset(&str);
  }else{
    zResult = 0;
  }
  return zResult;
}

/*
** Create a new declaration and put it in the hash table.  Also
** return a pointer to it so that we can fill in the zFwd and zDecl
** fields, and so forth.
*/
static Decl *CreateDecl(
  const char *zName,       /* Name of the object being declared. */
  int nName                /* Length of the name */
){
  Decl *pDecl;

  pDecl = SafeMalloc( sizeof(Decl) + nName + 1);
  memset(pDecl,0,sizeof(Decl));
  pDecl->zName = (char*)&pDecl[1];
  sprintf(pDecl->zName,"%.*s",nName,zName);
  pDecl->zFile = zFilename;
  pDecl->pInclude = includeList;
  pDecl->zIf = GetIfString();
  InstallDecl(pDecl);
  return pDecl;
}

/*
** Insert a new identifier into an table of identifiers.  Return TRUE if
** a new identifier was inserted and return FALSE if the identifier was
** already in the table.
*/
static int IdentTableInsert(
  IdentTable *pTable,       /* The table into which we will insert */
  const char *zId,          /* Name of the identifiers */
  int nId                   /* Length of the identifier name */
){
  int h;
  Ident *pId;

  if( nId<=0 ){
    nId = strlen(zId);
  }
  h = Hash(zId,nId) % IDENT_HASH_SIZE;
  for(pId = pTable->apTable[h]; pId; pId=pId->pCollide){
    if( strncmp(zId,pId->zName,nId)==0 && pId->zName[nId]==0 ){
      /* printf("Already in table: %.*s\n",nId,zId); */
      return 0;
    }
  }
  pId = SafeMalloc( sizeof(Ident) + nId + 1 );
  pId->zName = (char*)&pId[1];
  sprintf(pId->zName,"%.*s",nId,zId);
  pId->pNext = pTable->pList;
  pTable->pList = pId;
  pId->pCollide = pTable->apTable[h];
  pTable->apTable[h] = pId;
  /* printf("Add to table: %.*s\n",nId,zId); */
  return 1;
}

/*
** Check to see if the given value is in the given IdentTable.  Return
** true if it is and false if it is not.
*/
static int IdentTableTest(
  IdentTable *pTable,       /* The table in which to search */
  const char *zId,          /* Name of the identifiers */
  int nId                   /* Length of the identifier name */
){
  int h;
  Ident *pId;

  if( nId<=0 ){
    nId = strlen(zId);
  }
  h = Hash(zId,nId) % IDENT_HASH_SIZE;
  for(pId = pTable->apTable[h]; pId; pId=pId->pCollide){
    if( strncmp(zId,pId->zName,nId)==0 && pId->zName[nId]==0 ){
      return 1;
    }
  }
  return 0;
}

/*
** Remove every identifier from the given table.   Reset the table to
** its initial state.
*/
static void IdentTableReset(IdentTable *pTable){
  Ident *pId, *pNext;

  for(pId = pTable->pList; pId; pId = pNext){
    pNext = pId->pNext;
    SafeFree(pId);
  }
  memset(pTable,0,sizeof(IdentTable));
}

#ifdef DEBUG
/*
** Print the name of every identifier in the given table, one per line
*/
static void IdentTablePrint(IdentTable *pTable, FILE *pOut){
  Ident *pId;

  for(pId = pTable->pList; pId; pId = pId->pNext){
    fprintf(pOut,"%s\n",pId->zName);
  }
}
#endif

/*
** Read an entire file into memory.  Return a pointer to the memory.
**
** The memory is obtained from SafeMalloc and must be freed by the
** calling function.
**
** If the read fails for any reason, 0 is returned.
*/
static char *ReadFile(const char *zFilename){
  struct stat sStat;
  FILE *pIn;
  char *zBuf;
  int n;

  if( stat(zFilename,&sStat)!=0 
#ifndef WIN32
    || !S_ISREG(sStat.st_mode)
#endif
  ){
    return 0;
  }
  pIn = fopen(zFilename,"r");
  if( pIn==0 ){
    return 0;
  }
  zBuf = SafeMalloc( sStat.st_size + 1 );
  n = fread(zBuf,1,sStat.st_size,pIn);
  zBuf[n] = 0;
  fclose(pIn);
  return zBuf;
}

/*
** Write the contents of a string into a file.  Return the number of
** errors
*/
static int WriteFile(const char *zFilename, const char *zOutput){
  FILE *pOut;
  pOut = fopen(zFilename,"w");
  if( pOut==0 ){
    return 1;
  }
  fwrite(zOutput,1,strlen(zOutput),pOut);
  fclose(pOut);
  return 0;
}

/*
** Major token types
*/
#define TT_Space           1   /* Contiguous white space */
#define TT_Id              2   /* An identifier */
#define TT_Preprocessor    3   /* Any C preprocessor directive */
#define TT_Comment         4   /* Either C or C++ style comment */
#define TT_Number          5   /* Any numeric constant */
#define TT_String          6   /* String or character constants. ".." or '.' */
#define TT_Braces          7   /* All text between { and a matching } */
#define TT_EOF             8   /* End of file */
#define TT_Error           9   /* An error condition */
#define TT_BlockComment    10  /* A C-Style comment at the left margin that
                                * spans multple lines */
#define TT_Other           0   /* None of the above */

/*
** Get a single low-level token from the input file.  Update the
** file pointer so that it points to the first character beyond the
** token.
**
** A "low-level token" is any token except TT_Braces.  A TT_Braces token
** consists of many smaller tokens and is assembled by a routine that
** calls this one.
**
** The function returns the number of errors.  An error is an
** unterminated string or character literal or an unterminated
** comment.
**
** Profiling shows that this routine consumes about half the
** CPU time on a typical run of makeheaders.
*/
static int GetToken(InStream *pIn, Token *pToken){
  int i;
  const char *z;
  int cStart;
  int c;
  int startLine;   /* Line on which a structure begins */
  int nlisc = 0;   /* True if there is a new-line in a ".." or '..' */
  int nErr = 0;    /* Number of errors seen */

  z = pIn->z;
  i = pIn->i;
  pToken->nLine = pIn->nLine;
  pToken->zText = &z[i];
  switch( z[i] ){
    case 0:
      pToken->eType = TT_EOF;
      pToken->nText = 0;
      break;

    case '#':
      if( i==0 || z[i-1]=='\n' || (i>1 && z[i-1]=='\r' && z[i-2]=='\n')){
        /* We found a preprocessor statement */
        pToken->eType = TT_Preprocessor;
        i++;
        while( z[i]!=0 && z[i]!='\n' ){
          if( z[i]=='\\' ){
            i++;
            if( z[i]=='\n' ) pIn->nLine++;
          }
          i++;
        }
        pToken->nText = i - pIn->i;
      }else{
        /* Just an operator */
        pToken->eType = TT_Other;
        pToken->nText = 1;
      }
      break;

    case ' ':
    case '\t':
    case '\r':
    case '\f':
    case '\n':
      while( isspace(z[i]) ){
        if( z[i]=='\n' ) pIn->nLine++;
        i++;
      }
      pToken->eType = TT_Space;
      pToken->nText = i - pIn->i;
      break;

    case '\\':
      pToken->nText = 2;
      pToken->eType = TT_Other;
      if( z[i+1]=='\n' ){
        pIn->nLine++;
        pToken->eType = TT_Space;
      }else if( z[i+1]==0 ){
        pToken->nText = 1;
      }
      break;

    case '\'':
    case '\"':
      cStart = z[i];
      startLine = pIn->nLine;
      do{
        i++;
        c = z[i];
        if( c=='\n' ){
          if( !nlisc ){
            fprintf(stderr,
              "%s:%d: (warning) Newline in string or character literal.\n",
              zFilename, pIn->nLine);
            nlisc = 1;
          }
          pIn->nLine++;
        }
        if( c=='\\' ){
          i++;
          c = z[i];
          if( c=='\n' ){
            pIn->nLine++;
          }
        }else if( c==cStart ){
          i++;
          c = 0;
        }else if( c==0 ){
          fprintf(stderr, "%s:%d: Unterminated string or character literal.\n",
             zFilename, startLine);
          nErr++;
        }
      }while( c );
      pToken->eType = TT_String;
      pToken->nText = i - pIn->i;
      break;

    case '/':
      if( z[i+1]=='/' ){
        /* C++ style comment */
        while( z[i] && z[i]!='\n' ){ i++; }
        pToken->eType = TT_Comment;
        pToken->nText = i - pIn->i;
      }else if( z[i+1]=='*' ){
        /* C style comment */
        int isBlockComment = i==0 || z[i-1]=='\n';
        i += 2;
        startLine = pIn->nLine;
        while( z[i] && (z[i]!='*' || z[i+1]!='/') ){
          if( z[i]=='\n' ){
            pIn->nLine++;
            if( isBlockComment ){
              if( z[i+1]=='*' || z[i+2]=='*' ){
                 isBlockComment = 2;
              }else{
                 isBlockComment = 0;
              }
            }
          }
          i++;
        }
        if( z[i] ){ 
          i += 2; 
        }else{
          isBlockComment = 0;
          fprintf(stderr,"%s:%d: Unterminated comment\n",
            zFilename, startLine);
          nErr++;
        }
        pToken->eType = isBlockComment==2 ? TT_BlockComment : TT_Comment;
        pToken->nText = i - pIn->i;
      }else{
        /* A divide operator */
        pToken->eType = TT_Other;
        pToken->nText = 1 + (z[i+1]=='+');
      }
      break;

    case '0': 
      if( z[i+1]=='x' || z[i+1]=='X' ){
        /* A hex constant */
        i += 2;
        while( isxdigit(z[i]) ){ i++; }
      }else{
        /* An octal constant */
        while( isdigit(z[i]) ){ i++; }
      }
      pToken->eType = TT_Number;
      pToken->nText = i - pIn->i;
      break;

    case '1': case '2': case '3': case '4':
    case '5': case '6': case '7': case '8': case '9':
      while( isdigit(z[i]) ){ i++; }
      if( (c=z[i])=='.' ){
         i++;
         while( isdigit(z[i]) ){ i++; }
         c = z[i];
         if( c=='e' || c=='E' ){
           i++;
           if( ((c=z[i])=='+' || c=='-') && isdigit(z[i+1]) ){ i++; }
           while( isdigit(z[i]) ){ i++; }
           c = z[i];
         }
         if( c=='f' || c=='F' || c=='l' || c=='L' ){ i++; }
      }else if( c=='e' || c=='E' ){
         i++;
         if( ((c=z[i])=='+' || c=='-') && isdigit(z[i+1]) ){ i++; }
         while( isdigit(z[i]) ){ i++; }
      }else if( c=='L' || c=='l' ){
         i++;
         c = z[i];
         if( c=='u' || c=='U' ){ i++; }
      }else if( c=='u' || c=='U' ){
         i++;
         c = z[i];
         if( c=='l' || c=='L' ){ i++; }
      }
      pToken->eType = TT_Number;
      pToken->nText = i - pIn->i;
      break;

    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
    case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
    case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
    case 'v': case 'w': case 'x': case 'y': case 'z': case 'A': case 'B':
    case 'C': case 'D': case 'E': case 'F': case 'G': case 'H': case 'I':
    case 'J': case 'K': case 'L': case 'M': case 'N': case 'O': case 'P':
    case 'Q': case 'R': case 'S': case 'T': case 'U': case 'V': case 'W':
    case 'X': case 'Y': case 'Z': case '_':
      while( isalnum(z[i]) || z[i]=='_' ){ i++; };
      pToken->eType = TT_Id;
      pToken->nText = i - pIn->i;
      break;

    case ':': 
      pToken->eType = TT_Other;
      pToken->nText = 1 + (z[i+1]==':');
      break;

    case '=':
    case '<':
    case '>':
    case '+':
    case '-':
    case '*':
    case '%':
    case '^':
    case '&':
    case '|': 
      pToken->eType = TT_Other;
      pToken->nText = 1 + (z[i+1]=='=');
      break;

    default:
      pToken->eType = TT_Other;
      pToken->nText = 1;
      break;
  }
  pIn->i += pToken->nText;
  return nErr;
}

/*
** This routine recovers the next token from the input file which is
** not a space or a comment or any text between an "#if 0" and "#endif".
**
** This routine returns the number of errors encountered.  An error
** is an unterminated token or unmatched "#if 0".
**
** Profiling shows that this routine uses about a quarter of the
** CPU time in a typical run.
*/
static int GetNonspaceToken(InStream *pIn, Token *pToken){
  int nIf = 0;
  int inZero = 0;
  const char *z;
  int value;
  int startLine;
  int nErr = 0;

  startLine = pIn->nLine;
  while( 1 ){
    nErr += GetToken(pIn,pToken);
    /* printf("%04d: Type=%d nIf=%d [%.*s]\n",
       pToken->nLine,pToken->eType,nIf,pToken->nText,
       pToken->eType!=TT_Space ? pToken->zText : "<space>"); */
    pToken->pComment = blockComment;
    switch( pToken->eType ){
      case TT_Comment:
      case TT_Space:
        break;

      case TT_BlockComment:
        if( doc_flag ){
          blockComment = SafeMalloc( sizeof(Token) );
          *blockComment = *pToken;
        }
        break;

      case TT_EOF:
        if( nIf ){
          fprintf(stderr,"%s:%d: Unterminated \"#if\"\n",
             zFilename, startLine);
          nErr++;
        }
        return nErr;

      case TT_Preprocessor:
        z = &pToken->zText[1];
        while( *z==' ' || *z=='\t' ) z++;
        if( sscanf(z,"if %d",&value)==1 && value==0 ){
          nIf++;
          inZero = 1;
        }else if( inZero ){
          if( strncmp(z,"if",2)==0 ){
            nIf++;
          }else if( strncmp(z,"endif",5)==0 ){
            nIf--;
            if( nIf==0 ) inZero = 0;
          }
        }else{
          return nErr;
        }
        break;

      default:
        if( !inZero ){
          return nErr;
        }
        break;
    }
  }
  /* NOT REACHED */
}

/* 
** This routine looks for identifiers (strings of contiguous alphanumeric
** characters) within a preprocessor directive and adds every such string
** found to the given identifier table
*/
static void FindIdentifiersInMacro(Token *pToken, IdentTable *pTable){
  Token sToken;
  InStream sIn;
  int go = 1;

  sIn.z = pToken->zText;
  sIn.i = 1;
  sIn.nLine = 1;
  while( go && sIn.i < pToken->nText ){
    GetToken(&sIn,&sToken);
    switch( sToken.eType ){
      case TT_Id:
        IdentTableInsert(pTable,sToken.zText,sToken.nText);
        break;

      case TT_EOF:
        go = 0;
        break;

      default:
        break;
    }
  }
}

/*
** This routine gets the next token.  Everything contained within
** {...} is collapsed into a single TT_Braces token.  Whitespace is
** omitted.
**
** If pTable is not NULL, then insert every identifier seen into the
** IdentTable.  This includes any identifiers seen inside of {...}.
**
** The number of errors encountered is returned.  An error is an
** unterminated token.
*/
static int GetBigToken(InStream *pIn, Token *pToken, IdentTable *pTable){
  const char *z, *zStart;
  int iStart;
  int nBrace;
  int c;
  int nLine;
  int nErr;

  nErr = GetNonspaceToken(pIn,pToken);
  switch( pToken->eType ){
    case TT_Id:
      if( pTable!=0 ){
        IdentTableInsert(pTable,pToken->zText,pToken->nText);
      }
      return nErr;

    case TT_Preprocessor:
      if( pTable!=0 ){
        FindIdentifiersInMacro(pToken,pTable);
      }
      return nErr;

    case TT_Other:
      if( pToken->zText[0]=='{' ) break;
      return nErr;

    default:
      return nErr;
  }

  z = pIn->z;
  iStart = pIn->i;
  zStart = pToken->zText;
  nLine = pToken->nLine;
  nBrace = 1;
  while( nBrace ){
    nErr += GetNonspaceToken(pIn,pToken);
    /* printf("%04d: nBrace=%d [%.*s]\n",pToken->nLine,nBrace,
       pToken->nText,pToken->zText); */
    switch( pToken->eType ){
      case TT_EOF:
        fprintf(stderr,"%s:%d: Unterminated \"{\"\n",
           zFilename, nLine);
        nErr++;
        pToken->eType = TT_Error;
        return nErr;

      case TT_Id:
        if( pTable ){
          IdentTableInsert(pTable,pToken->zText,pToken->nText);
        }
        break;
  
      case TT_Preprocessor:
        if( pTable!=0 ){
          FindIdentifiersInMacro(pToken,pTable);
        }
        break;

      case TT_Other:
        if( (c = pToken->zText[0])=='{' ){
          nBrace++;
        }else if( c=='}' ){
          nBrace--;
        }
        break;

      default:
        break;
    }
  }
  pToken->eType = TT_Braces;
  pToken->nText = 1 + pIn->i - iStart;
  pToken->zText = zStart;
  pToken->nLine = nLine;
  return nErr;
}

/*
** This routine frees up a list of Tokens.  The pComment tokens are
** not cleared by this.  So we leak a little memory when using the -doc
** option.  So what.
*/
static void FreeTokenList(Token *pList){
  Token *pNext;
  while( pList ){
    pNext = pList->pNext;
    SafeFree(pList);
    pList = pNext;
  }
}

/*
** Tokenize an entire file.  Return a pointer to the list of tokens.
**
** Space for each token is obtained from a separate malloc() call.  The
** calling function is responsible for freeing this space.
**
** If pTable is not NULL, then fill the table with all identifiers seen in
** the input file.
*/
static Token *TokenizeFile(const char *zFile, IdentTable *pTable){
  InStream sIn;
  Token *pFirst = 0, *pLast = 0, *pNew;
  int nErr = 0;

  sIn.z = zFile;
  sIn.i = 0;
  sIn.nLine = 1;
  blockComment = 0;

  while( sIn.z[sIn.i]!=0 ){
    pNew = SafeMalloc( sizeof(Token) );
    nErr += GetBigToken(&sIn,pNew,pTable);
    debug3(TOKENIZER, "Token on line %d: [%.*s]\n",
       pNew->nLine, pNew->nText<50 ? pNew->nText : 50, pNew->zText);
    if( pFirst==0 ){
      pFirst = pLast = pNew;
      pNew->pPrev = 0;
    }else{
      pLast->pNext = pNew;
      pNew->pPrev = pLast;
      pLast = pNew;
    }
    if( pNew->eType==TT_EOF ) break;
  }
  if( pLast ) pLast->pNext = 0;
  blockComment = 0;
  if( nErr ){
    FreeTokenList(pFirst);
    pFirst = 0;
  }

  return pFirst;
}

#if TEST==1
/*
** Use the following routine to test or debug the tokenizer.
*/
void main(int argc, char **argv){
  char *zFile;
  Token *pList, *p;
  IdentTable sTable;

  if( argc!=2 ){
    fprintf(stderr,"Usage: %s filename\n",*argv);
    exit(1);
  }
  memset(&sTable,0,sizeof(sTable));
  zFile = ReadFile(argv[1]);
  if( zFile==0 ){
    fprintf(stderr,"Can't read file \"%s\"\n",argv[1]);
    exit(1);
  }
  pList = TokenizeFile(zFile,&sTable);
  for(p=pList; p; p=p->pNext){
    int j;
    switch( p->eType ){ 
      case TT_Space:
        printf("%4d: Space\n",p->nLine);
        break;
      case TT_Id:
        printf("%4d: Id           %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Preprocessor:
        printf("%4d: Preprocessor %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Comment:
        printf("%4d: Comment\n",p->nLine);
        break;
      case TT_BlockComment:
        printf("%4d: Block Comment\n",p->nLine);
        break;
      case TT_Number:
        printf("%4d: Number       %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_String:
        printf("%4d: String       %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Other:
        printf("%4d: Other        %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Braces:
        for(j=0; j<p->nText && j<30 && p->zText[j]!='\n'; j++){}
        printf("%4d: Braces       %.*s...}\n",p->nLine,j,p->zText);
        break;
      case TT_EOF:
        printf("%4d: End of file\n",p->nLine);
        break;
      default:
        printf("%4d: type %d\n",p->nLine,p->eType);
        break;
    }
  }
  FreeTokenList(pList);
  SafeFree(zFile);
  IdentTablePrint(&sTable,stdout);
}
#endif

#ifdef DEBUG
/*
** For debugging purposes, write out a list of tokens.
*/
static void PrintTokens(Token *pFirst, Token *pLast){
  int needSpace = 0;
  int c;

  pLast = pLast->pNext;
  while( pFirst!=pLast ){
    switch( pFirst->eType ){
      case TT_Preprocessor:
        printf("\n%.*s\n",pFirst->nText,pFirst->zText);
        needSpace = 0;
        break;

      case TT_Id:
      case TT_Number:
        printf("%s%.*s", needSpace ? " " : "", pFirst->nText, pFirst->zText);
        needSpace = 1;
        break;

      default:
        c = pFirst->zText[0];
        printf("%s%.*s", 
          (needSpace && (c=='*' || c=='{')) ? " " : "",
          pFirst->nText, pFirst->zText);
        needSpace = pFirst->zText[0]==',';
        break;
    }
    pFirst = pFirst->pNext;
  }
}
#endif

/*
** Convert a sequence of tokens into a string and return a pointer
** to that string.  Space to hold the string is obtained from malloc()
** and must be freed by the calling function.
**
** Certain keywords (EXPORT, PRIVATE, PUBLIC, PROTECTED) are always
** skipped.
**
** If pSkip!=0 then skip over nSkip tokens beginning with pSkip.
**
** If zTerm!=0 then append the text to the end.
*/
static char *TokensToString(
  Token *pFirst,    /* First token in the string */
  Token *pLast,     /* Last token in the string */
  char *zTerm,      /* Terminate the string with this text if not NULL */
  Token *pSkip,     /* Skip this token if not NULL */
  int nSkip         /* Skip a total of this many tokens */
){
  char *zReturn;
  String str;
  int needSpace = 0;
  int c;
  int iSkip = 0;
  int skipOne = 0;

  StringInit(&str);
  pLast = pLast->pNext;
  while( pFirst!=pLast ){
    if( pFirst==pSkip ){ iSkip = nSkip; }
    if( iSkip>0 ){ 
      iSkip--;
      pFirst=pFirst->pNext; 
      continue;
    }
    switch( pFirst->eType ){
      case TT_Preprocessor:
        StringAppend(&str,"\n",1);
        StringAppend(&str,pFirst->zText,pFirst->nText);
        StringAppend(&str,"\n",1);
        needSpace = 0;
        break;

      case TT_Id: 
        switch( pFirst->zText[0] ){
          case 'E':        
            if( pFirst->nText==6 && strncmp(pFirst->zText,"EXPORT",6)==0 ){
              skipOne = 1;
            }
            break;
          case 'P':
            switch( pFirst->nText ){
              case 6:  skipOne = !strncmp(pFirst->zText,"PUBLIC", 6);    break;
              case 7:  skipOne = !strncmp(pFirst->zText,"PRIVATE",7);    break;
              case 9:  skipOne = !strncmp(pFirst->zText,"PROTECTED",9);  break;
              default: break;
            }
            break;
          default:
            break;
        }
        if( skipOne ){
          pFirst = pFirst->pNext;
          continue;
        }
        /* Fall thru to the next case */
      case TT_Number:
        if( needSpace ){
          StringAppend(&str," ",1);
        }
        StringAppend(&str,pFirst->zText,pFirst->nText);
        needSpace = 1;
        break;

      default:
        c = pFirst->zText[0];
        if( needSpace && (c=='*' || c=='{') ){
          StringAppend(&str," ",1);
        }
        StringAppend(&str,pFirst->zText,pFirst->nText);
        /* needSpace = pFirst->zText[0]==','; */
        needSpace = 0;
        break;
    }
    pFirst = pFirst->pNext;
  }
  if( zTerm && *zTerm ){
    StringAppend(&str,zTerm,strlen(zTerm));
  }
  zReturn = StrDup(StringGet(&str),0);
  StringReset(&str);
  return zReturn;
}

/*
** This routine is called when we see one of the keywords "struct",
** "enum", "union" or "class".  This might be the beginning of a
** type declaration.  This routine will process the declaration and
** remove the declaration tokens from the input stream.
**
** If this is a type declaration that is immediately followed by a
** semicolon (in other words it isn't also a variable definition)
** then set *pReset to ';'.  Otherwise leave *pReset at 0.  The
** *pReset flag causes the parser to skip ahead to the next token
** that begins with the value placed in the *pReset flag, if that
** value is different from 0.
*/
static int ProcessTypeDecl(Token *pList, int flags, int *pReset){
  Token *pName, *pEnd;
  Decl *pDecl;
  String str;
  int need_to_collapse = 1;
  int type = 0;

  *pReset = 0;
  if( pList==0 || pList->pNext==0 || pList->pNext->eType!=TT_Id ){
    return 0;
  }
  pName = pList->pNext;

  /* Catch the case of "struct Foo;" and skip it. */
  if( pName->pNext && pName->pNext->zText[0]==';' ){
    *pReset = ';';
    return 0;
  }

  for(pEnd=pName->pNext; pEnd && pEnd->eType!=TT_Braces; pEnd=pEnd->pNext){
    switch( pEnd->zText[0] ){
      case '(':
      case '*':
      case '[':
      case '=':
      case ';':
        return 0;
    }
  }
  if( pEnd==0 ){
    return 0;
  }

  /*
  ** At this point, we know we have a type declaration that is bounded
  ** by pList and pEnd and has the name pName.
  */

  /*
  ** If the braces are followed immedately by a semicolon, then we are
  ** dealing a type declaration only.  There is not variable definition
  ** following the type declaration.  So reset...
  */
  if( pEnd->pNext==0 || pEnd->pNext->zText[0]==';' ){
    *pReset = ';';
    need_to_collapse = 0;
  }else{
    need_to_collapse = 1;
  }

  if( proto_static==0 && (flags & (PS_Local|PS_Export|PS_Interface))==0 ){
    /* Ignore these objects unless they are explicitly declared as interface,
    ** or unless the "-local" command line option was specified. */
    *pReset = ';';
    return 0;
  }

#ifdef DEBUG
  if( debugMask & PARSER ){
    printf("**** Found type: %.*s %.*s...\n",
      pList->nText, pList->zText, pName->nText, pName->zText);
    PrintTokens(pList,pEnd);
    printf(";\n");
  }
#endif

  /*
  ** Create a new Decl object for this definition.  Actually, if this
  ** is a C++ class definition, then the Decl object might already exist,
  ** so check first for that case before creating a new one.
  */
  switch( *pList->zText ){
    case 'c':  type = TY_Class;        break;
    case 's':  type = TY_Structure;    break;
    case 'e':  type = TY_Enumeration;  break;
    case 'u':  type = TY_Union;        break;
    default:   /* Can't Happen */      break;
  }
  if( type!=TY_Class ){
    pDecl = 0;
  }else{
    pDecl = FindDecl(pName->zText, pName->nText);
    if( pDecl && (pDecl->flags & type)!=type ) pDecl = 0;
  }
  if( pDecl==0 ){
    pDecl = CreateDecl(pName->zText,pName->nText);
  }
  if( (flags & PS_Static) || !(flags & (PS_Interface|PS_Export)) ){
    DeclSetProperty(pDecl,DP_Local);
  }
  DeclSetProperty(pDecl,type);

  /* The object has a full declaration only if it is contained within
  ** "#if INTERFACE...#endif" or "#if EXPORT_INTERFACE...#endif" or
  ** "#if LOCAL_INTERFACE...#endif".  Otherwise, we only give it a
  ** forward declaration.
  */
  if( flags & (PS_Local | PS_Export | PS_Interface)  ){
    pDecl->zDecl = TokensToString(pList,pEnd,";\n",0,0);
  }else{
    pDecl->zDecl = 0;
  }
  pDecl->pComment = pList->pComment;
  StringInit(&str);
  StringAppend(&str,"typedef ",0);
  StringAppend(&str,pList->zText,pList->nText);
  StringAppend(&str," ",0);
  StringAppend(&str,pName->zText,pName->nText);
  StringAppend(&str," ",0);
  StringAppend(&str,pName->zText,pName->nText);
  StringAppend(&str,";\n",2);
  pDecl->zFwd = StrDup(StringGet(&str),0);
  StringReset(&str);
  StringInit(&str);
  StringAppend(&str,pList->zText,pList->nText);
  StringAppend(&str," ",0);
  StringAppend(&str,pName->zText,pName->nText);
  StringAppend(&str,";\n",2);
  pDecl->zFwdCpp = StrDup(StringGet(&str),0);
  StringReset(&str);
  if( flags & PS_Export ){
    DeclSetProperty(pDecl,DP_Export);
  }else if( flags & PS_Local ){
    DeclSetProperty(pDecl,DP_Local);
  }

  /* Here's something weird.  ANSI-C doesn't allow a forward declaration
  ** of an enumeration.  So we have to build the typedef into the
  ** definition.
  */
  if( pDecl->zDecl && DeclHasProperty(pDecl, TY_Enumeration) ){
    StringInit(&str);
    StringAppend(&str,pDecl->zDecl,0);
    StringAppend(&str,pDecl->zFwd,0);
    SafeFree(pDecl->zDecl);
    SafeFree(pDecl->zFwd);
    pDecl->zFwd = 0;
    pDecl->zDecl = StrDup(StringGet(&str),0);
    StringReset(&str);
  }

  if( pName->pNext->zText[0]==':' ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }
  if( pName->nText==5 && strncmp(pName->zText,"class",5)==0 ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }

  /*
  ** Remove all but pList and pName from the input stream.
  */
  if( need_to_collapse ){
    while( pEnd!=pName ){
      Token *pPrev = pEnd->pPrev;
      pPrev->pNext = pEnd->pNext;
      pEnd->pNext->pPrev = pPrev;
      SafeFree(pEnd);
      pEnd = pPrev;
    }
  }
  return 0;
}

/*
** Given a list of tokens that declare something (a function, procedure,
** variable or typedef) find the token which contains the name of the
** thing being declared.
**
** Algorithm:
**
**   The name is:
**
**     1.  The first identifier that is followed by a "[", or
**
**     2.  The first identifier that is followed by a "(" where the
**         "(" is followed by another identifier, or
**
**     3.  The first identifier followed by "::", or
**
**     4.  If none of the above, then the last identifier.
**
**   In all of the above, certain reserved words (like "char") are
**   not considered identifiers.
*/
static Token *FindDeclName(Token *pFirst, Token *pLast){
  Token *pName = 0;
  Token *p;
  int c;

  if( pFirst==0 || pLast==0 ){
    return 0;
  }
  pLast = pLast->pNext;
  for(p=pFirst; p && p!=pLast; p=p->pNext){
    if( p->eType==TT_Id ){
      static IdentTable sReserved;
      static int isInit = 0;
      static char *aWords[] = { "char", "class", 
       "const", "double", "enum", "extern", "EXPORT", "ET_PROC", 
       "float", "int", "long",
       "PRIVATE", "PROTECTED", "PUBLIC",
       "register", "static", "struct", "sizeof", "signed", "typedef", 
       "union", "volatile", "virtual", "void", };
  
      if( !isInit ){
        int i;
        for(i=0; i<sizeof(aWords)/sizeof(aWords[0]); i++){
          IdentTableInsert(&sReserved,aWords[i],0);
        }
        isInit = 1;
      }
      if( !IdentTableTest(&sReserved,p->zText,p->nText) ){
        pName = p;
      }
    }else if( p==pFirst ){
      continue;
    }else if( (c=p->zText[0])=='[' && pName ){
      break;
    }else if( c=='(' && p->pNext && p->pNext->eType==TT_Id && pName ){
      break;
    }else if( c==':' && p->zText[1]==':' && pName ){
      break;
    }
  }
  return pName;
}

/*
** This routine is called when we see a method for a class that begins
** with the PUBLIC, PRIVATE, or PROTECTED keywords.  Such methods are
** added to their class definitions.
*/
static int ProcessMethodDef(Token *pFirst, Token *pLast, int flags){
  Token *pCode;
  Token *pClass;
  char *zDecl;
  Decl *pDecl;
  String str;
  int type;

  pCode = pLast;
  pLast = pLast->pPrev;
  while( pFirst->zText[0]=='P' ){
    int rc = 1;
    switch( pFirst->nText ){
      case 6:  rc = strncmp(pFirst->zText,"PUBLIC",6); break;
      case 7:  rc = strncmp(pFirst->zText,"PRIVATE",7); break;
      case 9:  rc = strncmp(pFirst->zText,"PROTECTED",9); break;
      default:  break;
    }
    if( rc ) break;
    pFirst = pFirst->pNext;
  }
  pClass = FindDeclName(pFirst,pLast);
  if( pClass==0 ){
    fprintf(stderr,"%s:%d: Unable to find the class name for this method\n",
       zFilename, pFirst->nLine);
    return 1;
  }
  pDecl = FindDecl(pClass->zText, pClass->nText);
  if( pDecl==0 || (pDecl->flags & TY_Class)!=TY_Class ){
    pDecl = CreateDecl(pClass->zText, pClass->nText);
    DeclSetProperty(pDecl, TY_Class);
  }
  StringInit(&str);
  if( pDecl->zExtra ){
    StringAppend(&str, pDecl->zExtra, 0);
    SafeFree(pDecl->zExtra);
    pDecl->zExtra = 0;
  }
  type = flags & PS_PPP;
  if( pDecl->extraType!=type ){
    if( type & PS_Public ){
      StringAppend(&str, "public:\n", 0);
      pDecl->extraType = PS_Public;
    }else if( type & PS_Protected ){
      StringAppend(&str, "protected:\n", 0);
      pDecl->extraType = PS_Protected;
    }else if( type & PS_Private ){
      StringAppend(&str, "private:\n", 0);
      pDecl->extraType = PS_Private;
    }
  }
  StringAppend(&str, "  ", 0);
  zDecl = TokensToString(pFirst, pLast, ";\n", pClass, 2);
  StringAppend(&str, zDecl, 0);
  SafeFree(zDecl);
  pDecl->zExtra = StrDup(StringGet(&str), 0);
  StringReset(&str);
  return 0;
}

/*
** This routine is called when we see a function or procedure definition.
** We make an entry in the declaration table that is a prototype for this
** function or procedure.
*/
static int ProcessProcedureDef(Token *pFirst, Token *pLast, int flags){
  Token *pName;
  Decl *pDecl;
  Token *pCode;

  if( pFirst==0 || pLast==0 ){
    return 0;
  }
  if( flags & PS_Method ){
    if( flags & PS_PPP ){
      return ProcessMethodDef(pFirst, pLast, flags);
    }else{
      return 0;
    }
  }
  if( (flags & PS_Static)!=0 && !proto_static ){
    return 0;
  }
  pCode = pLast;
  while( pLast && pLast!=pFirst && pLast->zText[0]!=')' ){
    pLast = pLast->pPrev;
  }
  if( pLast==0 || pLast==pFirst || pFirst->pNext==pLast ){
    fprintf(stderr,"%s:%d: Unrecognized syntax.\n", 
      zFilename, pFirst->nLine);
    return 1;
  }
  if( flags & (PS_Interface|PS_Export|PS_Local) ){
    fprintf(stderr,"%s:%d: Missing \"inline\" on function or procedure.\n",
      zFilename, pFirst->nLine);
    return 1;
  }
  pName = FindDeclName(pFirst,pLast);
  if( pName==0 ){
    fprintf(stderr,"%s:%d: Malformed function or procedure definition.\n",
      zFilename, pFirst->nLine);
    return 1;
  }

  /*
  ** At this point we've isolated a procedure declaration between pFirst
  ** and pLast with the name pName.
  */
#ifdef DEBUG
  if( debugMask & PARSER ){
    printf("**** Found routine: %.*s on line %d...\n", pName->nText,
       pName->zText, pFirst->nLine);
    PrintTokens(pFirst,pLast);
    printf(";\n");
  }
#endif
  pDecl = CreateDecl(pName->zText,pName->nText);
  pDecl->pComment = pFirst->pComment;
  if( pCode && pCode->eType==TT_Braces ){
    pDecl->tokenCode = *pCode;
  }
  DeclSetProperty(pDecl,TY_Subroutine);
  pDecl->zDecl = TokensToString(pFirst,pLast,";\n",0,0);
  if( (flags & (PS_Static|PS_Local2))!=0 ){
    DeclSetProperty(pDecl,DP_Local);
  }else if( (flags & (PS_Export2))!=0 ){
    DeclSetProperty(pDecl,DP_Export);
  }

  if( flags & DP_Cplusplus ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }else{
    DeclSetProperty(pDecl,DP_ExternCReqd);
  }

  return 0;
}

/*
** This routine is called whenever we see the "inline" keyword.  We
** need to seek-out the inline function or procedure and make a
** declaration out of the entire definition.
*/
static int ProcessInlineProc(Token *pFirst, int flags, int *pReset){
  Token *pName;
  Token *pEnd;
  Decl *pDecl;

  for(pEnd=pFirst; pEnd; pEnd = pEnd->pNext){
    if( pEnd->zText[0]=='{' || pEnd->zText[0]==';' ){
      *pReset = pEnd->zText[0];
      break;
    }
  }
  if( pEnd==0 ){
    *pReset = ';';
    fprintf(stderr,"%s:%d: incomplete inline procedure definition\n",
      zFilename, pFirst->nLine);
    return 1;
  }
  pName = FindDeclName(pFirst,pEnd);
  if( pName==0 ){
    fprintf(stderr,"%s:%d: malformed inline procedure definition\n",
      zFilename, pFirst->nLine);
    return 1;
  }

#ifdef DEBUG
  if( debugMask & PARSER ){
    printf("**** Found inline routine: %.*s on line %d...\n", 
       pName->nText, pName->zText, pFirst->nLine);
    PrintTokens(pFirst,pEnd);
    printf("\n");
  }
#endif
  pDecl = CreateDecl(pName->zText,pName->nText);
  pDecl->pComment = pFirst->pComment;
  DeclSetProperty(pDecl,TY_Subroutine);
  pDecl->zDecl = TokensToString(pFirst,pEnd,";\n",0,0);
  if( (flags & (PS_Static|PS_Local|PS_Local2)) ){
    DeclSetProperty(pDecl,DP_Local);
  }else if( flags & (PS_Export|PS_Export2) ){
    DeclSetProperty(pDecl,DP_Export);
  }

  if( flags & DP_Cplusplus ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }else{
    DeclSetProperty(pDecl,DP_ExternCReqd);
  }

  return 0;
}

/*
** Determine if the tokens between pFirst and pEnd form a variable
** definition or a function prototype.  Return TRUE if we are dealing
** with a variable defintion and FALSE for a prototype.
**
** pEnd is the token that ends the object.  It can be either a ';' or
** a '='.  If it is '=', then assume we have a variable definition.
**
** If pEnd is ';', then the determination is more difficult.  We have
** to search for an occurance of an ID followed immediately by '('.
** If found, we have a prototype.  Otherwise we are dealing with a
** variable definition.
*/
static int isVariableDef(Token *pFirst, Token *pEnd){
  if( pEnd && pEnd->zText[0]=='=' && 
    (pEnd->pPrev->nText!=8 || strncmp(pEnd->pPrev->zText,"operator",8)!=0)
  ){
    return 1;
  }
  while( pFirst && pFirst!=pEnd && pFirst->pNext && pFirst->pNext!=pEnd ){
    if( pFirst->eType==TT_Id && pFirst->pNext->zText[0]=='(' ){
      return 0;
    }
    pFirst = pFirst->pNext;
  }
  return 1;
}


/*
** This routine is called whenever we encounter a ";" or "=".  The stuff
** between pFirst and pLast constitutes either a typedef or a global
** variable definition.  Do the right thing.
*/
static int ProcessDecl(Token *pFirst, Token *pEnd, int flags){
  Token *pName;
  Decl *pDecl;
  int isLocal = 0;
  int isVar;
  int nErr = 0;

  if( pFirst==0 || pEnd==0 ){
    return 0;
  }
  if( flags & PS_Typedef ){
    if( (flags & (PS_Export2|PS_Local2))!=0 ){
      fprintf(stderr,"%s:%d: \"EXPORT\" or \"LOCAL\" ignored before typedef.\n",
        zFilename, pFirst->nLine);
      nErr++;
    }
    if( (flags & (PS_Interface|PS_Export|PS_Local|DP_Cplusplus))==0 ){
      /* It is illegal to duplicate a typedef in C (but OK in C++).
      ** So don't record typedefs that aren't within a C++ file or
      ** within #if INTERFACE..#endif */
      return nErr;
    }
    if( (flags & (PS_Interface|PS_Export|PS_Local))==0 && proto_static==0 ){
      /* Ignore typedefs that are not with "#if INTERFACE..#endif" unless
      ** the "-local" command line option is used. */
      return nErr;
    }
    if( (flags & (PS_Interface|PS_Export))==0 ){
      /* typedefs are always local, unless within #if INTERFACE..#endif */
      isLocal = 1;
    }
  }else if( flags & (PS_Static|PS_Local2) ){
    if( proto_static==0 && (flags & PS_Local2)==0 ){
      /* Don't record static variables unless the "-local" command line
      ** option was specified or the "LOCAL" keyword is used. */
      return nErr;
    }
    while( pFirst!=0 && pFirst->pNext!=pEnd &&
       ((pFirst->nText==6 && strncmp(pFirst->zText,"static",6)==0)
        || (pFirst->nText==5 && strncmp(pFirst->zText,"LOCAL",6)==0))
    ){
      /* Lose the initial "static" or local from local variables. 
      ** We'll prepend "extern" later. */
      pFirst = pFirst->pNext;
      isLocal = 1;
    }
    if( pFirst==0 || !isLocal ){
      return nErr;
    }
  }else if( flags & PS_Method ){
    /* Methods are declared by their class.  Don't declare separately. */
    return nErr;
  }
  isVar =  (flags & (PS_Typedef|PS_Method))==0 && isVariableDef(pFirst,pEnd);
  if( isVar && (flags & (PS_Interface|PS_Export|PS_Local))!=0 
  && (flags & PS_Extern)==0 ){
    fprintf(stderr,"%s:%d: Can't define a variable in this context\n",
      zFilename, pFirst->nLine);
    nErr++;
  }
  pName = FindDeclName(pFirst,pEnd->pPrev);
  if( pName==0 ){
    fprintf(stderr,"%s:%d: Can't find a name for the object declared here.\n",
      zFilename, pFirst->nLine);
    return nErr+1;
  }

#ifdef DEBUG
  if( debugMask & PARSER ){
    if( flags & PS_Typedef ){
      printf("**** Found typedef %.*s at line %d...\n",
        pName->nText, pName->zText, pName->nLine);
    }else if( isVar ){
      printf("**** Found variable %.*s at line %d...\n",
        pName->nText, pName->zText, pName->nLine);
    }else{
      printf("**** Found prototype %.*s at line %d...\n",
        pName->nText, pName->zText, pName->nLine);
    }
    PrintTokens(pFirst,pEnd->pPrev);
    printf(";\n");
  }
#endif

  pDecl = CreateDecl(pName->zText,pName->nText);
  if( (flags & PS_Typedef) ){
    DeclSetProperty(pDecl, TY_Typedef);
  }else if( isVar ){
    DeclSetProperty(pDecl,DP_ExternReqd | TY_Variable);
    if( !(flags & DP_Cplusplus) ){
      DeclSetProperty(pDecl,DP_ExternCReqd);
    }
  }else{
    DeclSetProperty(pDecl, TY_Subroutine);
    if( !(flags & DP_Cplusplus) ){
      DeclSetProperty(pDecl,DP_ExternCReqd);
    }
  }
  pDecl->pComment = pFirst->pComment;
  pDecl->zDecl = TokensToString(pFirst,pEnd->pPrev,";\n",0,0);
  if( isLocal || (flags & (PS_Local|PS_Local2))!=0 ){
    DeclSetProperty(pDecl,DP_Local);
  }else if( flags & (PS_Export|PS_Export2) ){
    DeclSetProperty(pDecl,DP_Export);
  }
  if( flags & DP_Cplusplus ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }
  return nErr;
}

/*
** Push an if condition onto the if stack
*/
static void PushIfMacro(
  const char *zPrefix,      /* A prefix, like "define" or "!" */
  const char *zText,        /* The condition */
  int nText,                /* Number of characters in zText */
  int nLine,                /* Line number where this macro occurs */
  int flags                 /* Either 0, PS_Interface, PS_Export or PS_Local */
){
  Ifmacro *pIf;
  int nByte;

  nByte = sizeof(Ifmacro);
  if( zText ){
    if( zPrefix ){
      nByte += strlen(zPrefix) + 2;
    }
    nByte += nText + 1;
  }
  pIf = SafeMalloc( nByte );
  if( zText ){
    pIf->zCondition = (char*)&pIf[1];
    if( zPrefix ){
      sprintf(pIf->zCondition,"%s(%.*s)",zPrefix,nText,zText);
    }else{
      sprintf(pIf->zCondition,"%.*s",nText,zText);
    }
  }else{
    pIf->zCondition = 0;
  }
  pIf->nLine = nLine;
  pIf->flags = flags;
  pIf->pNext = ifStack;
  ifStack = pIf;
}

/*
** This routine is called to handle all preprocessor directives.
**
** This routine will recompute the value of *pPresetFlags to be the
** logical or of all flags on all nested #ifs.  The #ifs that set flags
** are as follows:
**
**        conditional                   flag set
**        ------------------------      --------------------
**        #if INTERFACE                 PS_Interface
**        #if EXPORT_INTERFACE          PS_Export
**        #if LOCAL_INTERFACE           PS_Local
**
** For example, if after processing the preprocessor token given
** by pToken there is an "#if INTERFACE" on the preprocessor
** stack, then *pPresetFlags will be set to PS_Interface.
*/
static int ParsePreprocessor(Token *pToken, int flags, int *pPresetFlags){
  const char *zCmd;
  int nCmd;
  const char *zArg;
  int nArg;
  int nErr = 0;
  Ifmacro *pIf;

  zCmd = &pToken->zText[1];
  while( isspace(*zCmd) && *zCmd!='\n' ){
    zCmd++;
  }
  if( !isalpha(*zCmd) ){
    return 0;
  }
  nCmd = 1;
  while( isalpha(zCmd[nCmd]) ){
    nCmd++;
  }

  if( nCmd==5 && strncmp(zCmd,"endif",5)==0 ){
    /*
    ** Pop the if stack 
    */
    pIf = ifStack;
    if( pIf==0 ){
      fprintf(stderr,"%s:%d: extra '#endif'.\n",zFilename,pToken->nLine);
      return 1;
    }
    ifStack = pIf->pNext;
    SafeFree(pIf);
  }else if( nCmd==6 && strncmp(zCmd,"define",6)==0 ){
    /*
    ** Record a #define if we are in PS_Interface or PS_Export 
    */
    Decl *pDecl;
    if( !(flags & (PS_Local|PS_Interface|PS_Export)) ){ return 0; }
    zArg = &zCmd[6];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    for(nArg=0; ISALNUM(zArg[nArg]); nArg++){}
    if( nArg==0 ){ return 0; }
    pDecl = CreateDecl(zArg,nArg);
    pDecl->pComment = pToken->pComment;
    DeclSetProperty(pDecl,TY_Macro);
    pDecl->zDecl = SafeMalloc( pToken->nText + 2 );
    sprintf(pDecl->zDecl,"%.*s\n",pToken->nText,pToken->zText);
    if( flags & PS_Export ){
      DeclSetProperty(pDecl,DP_Export);
    }else if( flags & PS_Local ){
      DeclSetProperty(pDecl,DP_Local);
    }
  }else if( nCmd==7 && strncmp(zCmd,"include",7)==0 ){
    /*
    ** Record an #include if we are in PS_Interface or PS_Export 
    */
    Include *pInclude;
    char *zIf;

    if( !(flags & (PS_Interface|PS_Export)) ){ return 0; }
    zArg = &zCmd[7];
    while( *zArg && isspace(*zArg) ){ zArg++; }
    for(nArg=0; !isspace(zArg[nArg]); nArg++){}
    if( (zArg[0]=='"' && zArg[nArg-1]!='"')
      ||(zArg[0]=='<' && zArg[nArg-1]!='>')
    ){
      fprintf(stderr,"%s:%d: malformed #include statement.\n",
        zFilename,pToken->nLine);
      return 1;
    }
    zIf = GetIfString();
    if( zIf ){
      pInclude = SafeMalloc( sizeof(Include) + nArg*2 + strlen(zIf) + 10 );
      pInclude->zFile = (char*)&pInclude[1];
      pInclude->zLabel = &pInclude->zFile[nArg+1];
      sprintf(pInclude->zFile,"%.*s",nArg,zArg);
      sprintf(pInclude->zLabel,"%.*s:%s",nArg,zArg,zIf);
      pInclude->zIf = &pInclude->zLabel[nArg+1];
      SafeFree(zIf);
    }else{
      pInclude = SafeMalloc( sizeof(Include) + nArg + 1 );
      pInclude->zFile = (char*)&pInclude[1];
      sprintf(pInclude->zFile,"%.*s",nArg,zArg);
      pInclude->zIf = 0;
      pInclude->zLabel = pInclude->zFile;
    }
    pInclude->pNext = includeList;
    includeList = pInclude;
  }else if( nCmd==2 && strncmp(zCmd,"if",2)==0 ){
    /*
    ** Push an #if.  Watch for the special cases of INTERFACE
    ** and EXPORT_INTERFACE and LOCAL_INTERFACE
    */
    zArg = &zCmd[2];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    nArg = pToken->nText + (int)pToken->zText - (int)zArg;
    if( nArg==9 && strncmp(zArg,"INTERFACE",9)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Interface);
    }else if( nArg==16 && strncmp(zArg,"EXPORT_INTERFACE",16)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Export);
    }else if( nArg==15 && strncmp(zArg,"LOCAL_INTERFACE",15)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Local);
    }else{
      PushIfMacro(0,zArg,nArg,pToken->nLine,0);
    }
  }else if( nCmd==5 && strncmp(zCmd,"ifdef",5)==0 ){
    /* 
    ** Push an #ifdef.
    */
    zArg = &zCmd[5];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    nArg = pToken->nText + (int)pToken->zText - (int)zArg;
    PushIfMacro("defined",zArg,nArg,pToken->nLine,0);
  }else if( nCmd==6 && strncmp(zCmd,"ifndef",6)==0 ){
    /*
    ** Push an #ifndef.
    */
    zArg = &zCmd[6];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    nArg = pToken->nText + (int)pToken->zText - (int)zArg;
    PushIfMacro("!defined",zArg,nArg,pToken->nLine,0);
  }else if( nCmd==4 && strncmp(zCmd,"else",4)==0 ){
    /*
    ** Invert the #if on the top of the stack 
    */
    if( ifStack==0 ){
      fprintf(stderr,"%s:%d: '#else' without an '#if'\n",zFilename,
         pToken->nLine);
      return 1;
    }
    pIf = ifStack;
    if( pIf->zCondition ){
      ifStack = ifStack->pNext;
      PushIfMacro("!",pIf->zCondition,strlen(pIf->zCondition),pIf->nLine,0);
      SafeFree(pIf);
    }else{
      pIf->flags = 0;
    }
  }else{
    /*
    ** This directive can be safely ignored 
    */
    return 0;
  }

  /* 
  ** Recompute the preset flags 
  */
  *pPresetFlags = 0;
  for(pIf = ifStack; pIf; pIf=pIf->pNext){
    *pPresetFlags |= pIf->flags;
  }
    
  return nErr;
}

/*
** Parse an entire file.  Return the number of errors.
**
** pList is a list of tokens in the file.  Whitespace tokens have been
** eliminated, and text with {...} has been collapsed into a
** single TT_Brace token.
** 
** initFlags are a set of parse flags that should always be set for this
** file.  For .c files this is normally 0.  For .h files it is PS_Interface.
*/
static int ParseFile(Token *pList, int initFlags){
  int nErr = 0;
  Token *pStart = 0;
  int flags = initFlags;
  int presetFlags = initFlags;
  int resetFlag = 0;

  includeList = 0;
  while( pList ){
    switch( pList->eType ){
    case TT_EOF:
      goto end_of_loop;

    case TT_Preprocessor:
      nErr += ParsePreprocessor(pList,flags,&presetFlags);
      pStart = 0;
      presetFlags |= initFlags;
      flags = presetFlags;
      break;

    case TT_Other:
      switch( pList->zText[0] ){
      case ';':
        nErr += ProcessDecl(pStart,pList,flags);
        pStart = 0;
        flags = presetFlags;
        break;

      case '=':
        if( pList->pPrev->nText==8 
            && strncmp(pList->pPrev->zText,"operator",8)==0 ){
          break;
        }
        nErr += ProcessDecl(pStart,pList,flags);
        pStart = 0;
        while( pList && pList->zText[0]!=';' ){
          pList = pList->pNext;
        }
        if( pList==0 ) goto end_of_loop;
        flags = presetFlags;
        break;

      case ':':
        if( pList->zText[1]==':' ){
          flags |= PS_Method;
        }
        break;

      default:
        break;
      }
      break;

    case TT_Braces:
      nErr += ProcessProcedureDef(pStart,pList,flags);
      pStart = 0;
      flags = presetFlags;
      break;

    case TT_Id:
       if( pStart==0 ){
          pStart = pList;
          flags = presetFlags;
       }
       resetFlag = 0;
       switch( pList->zText[0] ){
       case 'c':
         if( pList->nText==5 && strncmp(pList->zText,"class",5)==0 ){
           nErr += ProcessTypeDecl(pList,flags,&resetFlag);
         }
         break;

       case 'E':
         if( pList->nText==6 && strncmp(pList->zText,"EXPORT",6)==0 ){
           flags |= PS_Export2;
           /* pStart = 0; */
         }
         break;

       case 'e':
         if( pList->nText==4 && strncmp(pList->zText,"enum",4)==0 ){
           if( pList->pNext && pList->pNext->eType==TT_Braces ){
             pList = pList->pNext;
           }else{
             nErr += ProcessTypeDecl(pList,flags,&resetFlag);
           }
         }else if( pList->nText==6 && strncmp(pList->zText,"extern",6)==0 ){
           pList = pList->pNext;
           if( pList && pList->nText==3 && strncmp(pList->zText,"\"C\"",3)==0 ){
             pList = pList->pNext;
             flags &= ~DP_Cplusplus;
           }else{
             flags |= PS_Extern;
           }
           pStart = pList;
         }
         break;

       case 'i':
         if( pList->nText==6 && strncmp(pList->zText,"inline",6)==0 ){
           nErr += ProcessInlineProc(pList,flags,&resetFlag);
         }
         break;

       case 'L':
         if( pList->nText==5 && strncmp(pList->zText,"LOCAL",5)==0 ){
           flags |= PS_Local2;
           pStart = pList;
         }
         break;

       case 'P':
         if( pList->nText==6 && strncmp(pList->zText, "PUBLIC",6)==0 ){
           flags |= PS_Public;
           pStart = pList;
         }else if( pList->nText==7 && strncmp(pList->zText, "PRIVATE",7)==0 ){
           flags |= PS_Private;
           pStart = pList;
         }else if( pList->nText==9 && strncmp(pList->zText,"PROTECTED",9)==0 ){
           flags |= PS_Protected;
           pStart = pList;
         }
         break;

       case 's':
         if( pList->nText==6 && strncmp(pList->zText,"struct",6)==0 ){
           if( pList->pNext && pList->pNext->eType==TT_Braces ){
             pList = pList->pNext;
           }else{
             nErr += ProcessTypeDecl(pList,flags,&resetFlag);
           }
         }else if( pList->nText==6 && strncmp(pList->zText,"static",6)==0 ){
           flags |= PS_Static;
         }
         break;

       case 't':
         if( pList->nText==7 && strncmp(pList->zText,"typedef",7)==0 ){
           flags |= PS_Typedef;
         }
         break;

       case 'u':
         if( pList->nText==5 && strncmp(pList->zText,"union",5)==0 ){
           if( pList->pNext && pList->pNext->eType==TT_Braces ){
             pList = pList->pNext;
           }else{
             nErr += ProcessTypeDecl(pList,flags,&resetFlag);
           }
         }
         break;

       default:
         break;
       }
       if( resetFlag!=0 ){
         while( pList && pList->zText[0]!=resetFlag ){
           pList = pList->pNext;
         }
         if( pList==0 ) goto end_of_loop;
         pStart = 0;
         flags = presetFlags;
       }
       break;

    case TT_String:
    case TT_Number:
       break;

    default:
       pStart = pList;
       flags = presetFlags;
       break;
    }
    pList = pList->pNext;
  }
  end_of_loop:

  /* Verify that all #ifs have a matching "#endif" */
  while( ifStack ){
    Ifmacro *pIf = ifStack;
    ifStack = pIf->pNext;
    fprintf(stderr,"%s:%d: This '#if' has no '#endif'\n",zFilename,
      pIf->nLine);
    SafeFree(pIf);
  }

  return nErr;
}

/*
** If the given Decl object has a non-null zExtra field, then the text
** of that zExtra field needs to be inserted in the middle of the
** zDecl field before the last "}" in the zDecl.  This routine does that.
** If the zExtra is NULL, this routine is a no-op.
**
** zExtra holds extra method declarations for classes.  The declarations
** have to be inserted into the class definition.
*/
static void InsertExtraDecl(Decl *pDecl){
  int i;
  String str;

  if( pDecl==0 || pDecl->zExtra==0 || pDecl->zDecl==0 ) return;
  i = strlen(pDecl->zDecl) - 1;
  while( i>0 && pDecl->zDecl[i]!='}' ){ i--; }
  StringInit(&str);
  StringAppend(&str, pDecl->zDecl, i);
  StringAppend(&str, pDecl->zExtra, 0);
  StringAppend(&str, &pDecl->zDecl[i], 0);
  SafeFree(pDecl->zDecl);
  SafeFree(pDecl->zExtra);
  pDecl->zDecl = StrDup(StringGet(&str), 0);
  StringReset(&str);
  pDecl->zExtra = 0;
}

/*
** Reset the DP_Forward and DP_Declared flags on all Decl structures.
** Set both flags for anything that is tagged as local and isn't 
** in the file zFilename so that it won't be printing in other files.
*/
static void ResetDeclFlags(char *zFilename){
  Decl *pDecl;

  for(pDecl = pDeclFirst; pDecl; pDecl = pDecl->pNext){
    DeclClearProperty(pDecl,DP_Forward|DP_Declared);
    if( DeclHasProperty(pDecl,DP_Local) && pDecl->zFile!=zFilename ){
      DeclSetProperty(pDecl,DP_Forward|DP_Declared);
    }
  }
}

/*
** Forward declaration of the ScanText() function.
*/
static void ScanText(const char*, GenState *pState);

/*
** The output in pStr is currently within an #if CONTEXT where context
** is equal to *pzIf.  (*pzIf might be NULL to indicate that we are
** not within any #if at the moment.)  We are getting ready to output
** some text that needs to be within the context of "#if NEW" where
** NEW is zIf.  Make an appropriate change to the context.
*/
static void ChangeIfContext(
  const char *zIf,       /* The desired #if context */
  GenState *pState       /* Current state of the code generator */
){
  if( zIf==0 ){
    if( pState->zIf==0 ) return;
    StringAppend(pState->pStr,"#endif\n",0);
    pState->zIf = 0;
  }else{
    if( pState->zIf ){
      if( strcmp(zIf,pState->zIf)==0 ) return;
      StringAppend(pState->pStr,"#endif\n",0);
      pState->zIf = 0;
    }
    ScanText(zIf, pState);
    if( pState->zIf!=0 ){
      StringAppend(pState->pStr,"#endif\n",0);
    }
    StringAppend(pState->pStr,"#if ",0);
    StringAppend(pState->pStr,zIf,0);
    StringAppend(pState->pStr,"\n",0);
    pState->zIf = zIf;
  }
}

/*
** Add to the string pStr a #include of every file on the list of
** include files pInclude.  The table pTable contains all files that
** have already been #included at least once.  Don't add any
** duplicates.  Update pTable with every new #include that is added.
*/
static void AddIncludes(
  Include *pInclude,       /* Write every #include on this list */
  GenState *pState         /* Current state of the code generator */
){
  if( pInclude ){
    if( pInclude->pNext ){
      AddIncludes(pInclude->pNext,pState);
    }
    if( IdentTableInsert(pState->pTable,pInclude->zLabel,0) ){
      ChangeIfContext(pInclude->zIf,pState);
      StringAppend(pState->pStr,"#include ",0);
      StringAppend(pState->pStr,pInclude->zFile,0);
      StringAppend(pState->pStr,"\n",1);
    }
  }
}

/*
** Add to the string pStr a declaration for the object described
** in pDecl.
**
** If pDecl has already been declared in this file, detect that
** fact and abort early.  Do not duplicate a declaration.
**
** If the needFullDecl flag is false and this object has a forward
** declaration, then supply the forward declaration only.  A later
** call to CompleteForwardDeclarations() will finish the declaration
** for us.  But if needFullDecl is true, we must supply the full
** declaration now.  Some objects do not have a forward declaration.
** For those objects, we must print the full declaration now.
**
** Because it is illegal to duplicate a typedef in C, care is taken
** to insure that typedefs for the same identifier are only issued once.
*/
static void DeclareObject(
  Decl *pDecl,        /* The thing to be declared */
  GenState *pState,   /* Current state of the code generator */
  int needFullDecl    /* Must have the full declaration.  A forward
                       * declaration isn't enough */
){
  Decl *p;               /* The object to be declared */
  int flag;
  int isCpp;             /* True if generating C++ */
  int doneTypedef = 0;   /* True if a typedef has been done for this object */

  /* printf("BEGIN %s of %s\n",needFullDecl?"FULL":"PROTOTYPE",pDecl->zName);*/
  /* 
  ** For any object that has a forward declaration, go ahead and do the
  ** forward declaration first.
  */
  isCpp = (pState->flags & DP_Cplusplus) != 0;
  for(p=pDecl; p; p=p->pSameName){
    if( p->zFwd ){
      if( !DeclHasProperty(p,DP_Forward) ){
        DeclSetProperty(p,DP_Forward);
        if( strncmp(p->zFwd,"typedef",7)==0 ){
          if( doneTypedef ) continue;
          doneTypedef = 1;
        }
        ChangeIfContext(p->zIf,pState);
        StringAppend(pState->pStr,isCpp ? p->zFwdCpp : p->zFwd,0);
      }
    }
  }

  /*
  ** Early out if everything is already suitably declared.
  **
  ** This is a very important step because it prevents us from
  ** executing the code the follows in a recursive call to this
  ** function with the same value for pDecl.
  */
  flag = needFullDecl ? DP_Declared|DP_Forward : DP_Forward;
  for(p=pDecl; p; p=p->pSameName){
    if( !DeclHasProperty(p,flag) ) break;
  }
  if( p==0 ){
    return;
  }

  /*
  ** Make sure we have all necessary #includes
  */
  for(p=pDecl; p; p=p->pSameName){
    AddIncludes(p->pInclude,pState);
  }

  /*
  ** Go ahead an mark everything as being declared, to prevent an
  ** infinite loop thru the ScanText() function.  At the same time,
  ** we decide which objects need a full declaration and mark them
  ** with the DP_Flag bit.  We are only able to use DP_Flag in this
  ** way because we know we'll never execute this far into this
  ** function on a recursive call with the same pDecl.  Hence, recursive
  ** calls to this function (through ScanText()) can never change the
  ** value of DP_Flag out from under us.
  */
  for(p=pDecl; p; p=p->pSameName){
    if( !DeclHasProperty(p,DP_Declared) 
     && (p->zFwd==0 || needFullDecl) 
     && p->zDecl!=0
    ){
      DeclSetProperty(p,DP_Forward|DP_Declared|DP_Flag);
    }else{
      DeclClearProperty(p,DP_Flag);
    }
  }

  /*
  ** Call ScanText() recusively (this routine is called from ScanText())
  ** to include declarations required to come before these declarations.
  */
  for(p=pDecl; p; p=p->pSameName){
    if( DeclHasProperty(p,DP_Flag) ){
      if( p->zDecl[0]=='#' ){
        ScanText(&p->zDecl[1],pState);
      }else{
        InsertExtraDecl(p);
        ScanText(p->zDecl,pState);
      }
    }
  }

  /*
  ** Output the declarations.  Do this in two passes.  First
  ** output everything that isn't a typedef.  Then go back and
  ** get the typedefs by the same name.
  */
  for(p=pDecl; p; p=p->pSameName){
    if( DeclHasProperty(p,DP_Flag) && !DeclHasProperty(p,TY_Typedef) ){
      if( DeclHasAnyProperty(p,TY_Enumeration) ){
        if( doneTypedef ) continue;
        doneTypedef = 1;
      }
      ChangeIfContext(p->zIf,pState);
      if( !isCpp && DeclHasAnyProperty(p,DP_ExternReqd) ){
        StringAppend(pState->pStr,"extern ",0);
      }else if( isCpp && DeclHasProperty(p,DP_Cplusplus|DP_ExternReqd) ){
        StringAppend(pState->pStr,"extern ",0);
      }else if( isCpp && DeclHasAnyProperty(p,DP_ExternCReqd|DP_ExternReqd) ){
        StringAppend(pState->pStr,"extern \"C\" ",0);
      }
      InsertExtraDecl(p);
      StringAppend(pState->pStr,p->zDecl,0);
      if( !isCpp && DeclHasProperty(p,DP_Cplusplus) ){
        fprintf(stderr,
          "%s: C code ought not reference the C++ object \"%s\"\n",
          pState->zFilename, p->zName);
        pState->nErr++;
      }
      DeclClearProperty(p,DP_Flag);
    }
  }
  for(p=pDecl; p && !doneTypedef; p=p->pSameName){
    if( DeclHasProperty(p,DP_Flag) ){
      /* This has to be a typedef */
      doneTypedef = 1;
      ChangeIfContext(p->zIf,pState);
      InsertExtraDecl(p);
      StringAppend(pState->pStr,p->zDecl,0);
    }
  }
}

/*
** This routine scans the input text given, and appends to the
** string in pState->pStr the text of any declarations that must
** occur before the text in zText.
**
** If an identifier in zText is immediately followed by '*', then
** only forward declarations are needed for that identifier.  If the
** identifier name is not followed immediately by '*', we must supply
** a full declaration.
*/
static void ScanText(
  const char *zText,    /* The input text to be scanned */
  GenState *pState      /* Current state of the code generator */
){
  int nextValid = 0;    /* True is sNext contains valid data */
  InStream sIn;         /* The input text */
  Token sToken;         /* The current token being examined */
  Token sNext;          /* The next non-space token */

  /* printf("BEGIN SCAN TEXT on %s\n", zText); */

  sIn.z = zText;
  sIn.i = 0;
  sIn.nLine = 1;
  while( sIn.z[sIn.i]!=0 ){
    if( nextValid ){
      sToken = sNext;
      nextValid = 0;
    }else{
      GetNonspaceToken(&sIn,&sToken);
    }
    if( sToken.eType==TT_Id ){
      int needFullDecl;   /* True if we need to provide the full declaration,
                          ** not just the forward declaration */
      Decl *pDecl;        /* The declaration having the name in sToken */

      /*
      ** See if there is a declaration in the database with the name given
      ** by sToken.
      */
      pDecl = FindDecl(sToken.zText,sToken.nText);
      if( pDecl==0 ) continue;

      /* 
      ** If we get this far, we've found an identifier that has a 
      ** declaration in the database.  Now see if we the full declaration
      ** or just a forward declaration.
      */
      GetNonspaceToken(&sIn,&sNext);
      if( sNext.zText[0]=='*' ){
        needFullDecl = 0;
      }else{
        needFullDecl = 1;
        nextValid = sNext.eType==TT_Id;
      }

      /*
      ** Generate the needed declaration.
      */
      DeclareObject(pDecl,pState,needFullDecl);
    }else if( sToken.eType==TT_Preprocessor ){
      sIn.i -= sToken.nText - 1;
    }
  }
  /* printf("END SCANTEXT\n"); */
}

/*
** Provide a full declaration to any object which so far has had only
** a foward declaration.
*/
static void CompleteForwardDeclarations(GenState *pState){
  Decl *pDecl;
  int progress;

  do{
    progress = 0;
    for(pDecl=pDeclFirst; pDecl; pDecl=pDecl->pNext){
      if( DeclHasProperty(pDecl,DP_Forward) 
       && !DeclHasProperty(pDecl,DP_Declared) 
      ){
        DeclareObject(pDecl,pState,1);
        progress = 1;
        assert( DeclHasProperty(pDecl,DP_Declared) );
      }
    }
  }while( progress );
}

/*
** Generate an include file for the given source file.  Return the number
** of errors encountered.
**
** if nolocal_flag is true, then we do not generate declarations for
** objected marked DP_Local.
*/
static int MakeHeader(InFile *pFile, FILE *report, int nolocal_flag){
  int nErr = 0;
  GenState sState;
  String outStr;
  IdentTable includeTable;
  Ident *pId;
  char *zNewVersion;
  char *zOldVersion;

  if( pFile->zHdr==0 || *pFile->zHdr==0 ) return 0;
  sState.pStr = &outStr;
  StringInit(&outStr);
  StringAppend(&outStr,zTopLine,nTopLine);
  sState.pTable = &includeTable;
  memset(&includeTable,0,sizeof(includeTable));
  sState.zIf = 0;
  sState.nErr = 0;
  sState.zFilename = pFile->zSrc;
  sState.flags = pFile->flags & DP_Cplusplus;
  ResetDeclFlags(nolocal_flag ? "no" : pFile->zSrc);
  for(pId = pFile->idTable.pList; pId; pId=pId->pNext){
    Decl *pDecl = FindDecl(pId->zName,0);
    if( pDecl ){
      DeclareObject(pDecl,&sState,1);
    }
  }
  CompleteForwardDeclarations(&sState);
  ChangeIfContext(0,&sState);
  nErr += sState.nErr;
  zOldVersion = ReadFile(pFile->zHdr);
  zNewVersion = StringGet(&outStr);
  if( report ) fprintf(report,"%s: ",pFile->zHdr);
  if( zOldVersion==0 ){
    if( report ) fprintf(report,"updated\n");
    if( WriteFile(pFile->zHdr,zNewVersion) ){
      fprintf(stderr,"%s: Can't write to file\n",pFile->zHdr);
      nErr++;
    }
  }else if( strncmp(zOldVersion,zTopLine,nTopLine)!=0 ){
    if( report ) fprintf(report,"error!\n");
    fprintf(stderr,
       "%s: Can't overwrite this file because it wasn't previously\n"
       "%*s  generated by 'makeheaders'.\n",
       pFile->zHdr, strlen(pFile->zHdr), "");
    nErr++;
  }else if( strcmp(zOldVersion,zNewVersion)!=0 ){
    if( report ) fprintf(report,"updated\n");
    if( WriteFile(pFile->zHdr,zNewVersion) ){
      fprintf(stderr,"%s: Can't write to file\n",pFile->zHdr);
      nErr++;
    }
  }else if( report ){
    fprintf(report,"unchanged\n");
  }
  SafeFree(zOldVersion); 
  IdentTableReset(&includeTable);
  StringReset(&outStr);
  return nErr;
}

/*
** Generate a global header file -- a header file that contains all
** declarations.  If the forExport flag is true, then only those
** objects that are exported are included in the header file.
*/
static int MakeGlobalHeader(int forExport){
  GenState sState;
  String outStr;
  IdentTable includeTable;
  Decl *pDecl;

  sState.pStr = &outStr;
  StringInit(&outStr);
  /* StringAppend(&outStr,zTopLine,nTopLine); */
  sState.pTable = &includeTable;
  memset(&includeTable,0,sizeof(includeTable));
  sState.zIf = 0;
  sState.nErr = 0;
  sState.zFilename = "(all)";
  sState.flags = 0;
  ResetDeclFlags(0);
  for(pDecl=pDeclFirst; pDecl; pDecl=pDecl->pNext){
    if( forExport==0 || DeclHasProperty(pDecl,DP_Export) ){
      DeclareObject(pDecl,&sState,1);
    }
  }
  ChangeIfContext(0,&sState);
  printf("%s",StringGet(&outStr));
  IdentTableReset(&includeTable);
  StringReset(&outStr);
  return 0;  
}

#ifdef DEBUG
/*
** Return the number of characters in the given string prior to the
** first newline.
*/
static int ClipTrailingNewline(char *z){
  int n = strlen(z);
  while( n>0 && (z[n-1]=='\n' || z[n-1]=='\r') ){ n--; }
  return n;
}

/*
** Dump the entire declaration list for debugging purposes
*/
static void DumpDeclList(void){
  Decl *pDecl;

  for(pDecl = pDeclFirst; pDecl; pDecl=pDecl->pNext){
    printf("**** %s from file %s ****\n",pDecl->zName,pDecl->zFile);
    if( pDecl->zIf ){
      printf("If: [%.*s]\n",ClipTrailingNewline(pDecl->zIf),pDecl->zIf);
    }
    if( pDecl->zFwd ){
      printf("Decl: [%.*s]\n",ClipTrailingNewline(pDecl->zFwd),pDecl->zFwd);
    }
    if( pDecl->zDecl ){
      InsertExtraDecl(pDecl);
      printf("Def: [%.*s]\n",ClipTrailingNewline(pDecl->zDecl),pDecl->zDecl);
    }
    if( pDecl->flags ){
      static struct {
        int mask;
        char *desc;
      } flagSet[] = {
        { TY_Class,       "class" },
        { TY_Enumeration, "enum" },
        { TY_Structure,   "struct" },
        { TY_Union,       "union" },
        { TY_Variable,    "variable" },
        { TY_Subroutine,  "function" },
        { TY_Typedef,     "typedef" },
        { TY_Macro,       "macro" },
        { DP_Export,      "export" },
        { DP_Local,       "local" },
        { DP_Cplusplus,   "C++" },
      };
      int i;
      printf("flags:");
      for(i=0; i<sizeof(flagSet)/sizeof(flagSet[0]); i++){
        if( flagSet[i].mask & pDecl->flags ){
          printf(" %s", flagSet[i].desc);
        }
      }
      printf("\n");
    }
    if( pDecl->pInclude ){
      Include *p;
      printf("includes:");
      for(p=pDecl->pInclude; p; p=p->pNext){
        printf(" %s",p->zFile);
      }
      printf("\n");
    }
  }
}
#endif

/*
** When the "-doc" command-line option is used, this routine is called
** to print all of the database information to standard output.
*/
static void DocumentationDump(void){
  Decl *pDecl;
  static struct {
    int mask;
    char flag;
  } flagSet[] = {
    { TY_Class,       'c' },
    { TY_Enumeration, 'e' },
    { TY_Structure,   's' },
    { TY_Union,       'u' },
    { TY_Variable,    'v' },
    { TY_Subroutine,  'f' },
    { TY_Typedef,     't' },
    { TY_Macro,       'm' },
    { DP_Export,      'x' },
    { DP_Local,       'l' },
    { DP_Cplusplus,   '+' },
  };

  for(pDecl = pDeclFirst; pDecl; pDecl=pDecl->pNext){
    int i;
    int nLabel = 0;
    char *zDecl;
    char zLabel[50];
    for(i=0; i<sizeof(flagSet)/sizeof(flagSet[0]); i++){
      if( DeclHasProperty(pDecl,flagSet[i].mask) ){
        zLabel[nLabel++] = flagSet[i].flag;
      }
    }
    if( nLabel==0 ) continue;
    zLabel[nLabel] = 0;
    InsertExtraDecl(pDecl);
    zDecl = pDecl->zDecl;
    if( zDecl==0 ) zDecl = pDecl->zFwd;
    printf("%s %s %s %d %d %d %d %d %d\n",
       pDecl->zName,
       zLabel,
       pDecl->zFile,
       pDecl->pComment ? (int)pDecl->pComment/sizeof(Token) : 0,
       pDecl->pComment ? pDecl->pComment->nText+1 : 0,
       pDecl->zIf ? strlen(pDecl->zIf)+1 : 0,
       zDecl ? strlen(zDecl) : 0,
       pDecl->pComment ? pDecl->pComment->nLine : 0,
       pDecl->tokenCode.nText ? pDecl->tokenCode.nText+1 : 0
    );
    if( pDecl->pComment ){
      printf("%.*s\n",pDecl->pComment->nText, pDecl->pComment->zText);
    }
    if( pDecl->zIf ){
      printf("%s\n",pDecl->zIf);
    }
    if( zDecl ){
      printf("%s",zDecl);
    }
    if( pDecl->tokenCode.nText ){
      printf("%.*s\n",pDecl->tokenCode.nText, pDecl->tokenCode.zText);
    }
  }
}

/*
** Given the complete text of an input file, this routine prints a
** documentation record for the header comment at the beginning of the
** file (if the file has a header comment.)
*/
void PrintModuleRecord(const char *zFile, const char *zFilename){
  int i;
  static int addr = 5;
  while( isspace(*zFile) ){ zFile++; }
  if( *zFile!='/' || zFile[1]!='*' ) return;
  for(i=2; zFile[i] && (zFile[i-1]!='/' || zFile[i-2]!='*'); i++){}
  if( zFile[i]==0 ) return;
  printf("%s M %s %d %d 0 0 0 0\n%.*s\n",
    zFilename, zFilename, addr, i+1, i, zFile);
  addr += 4;
}


/*
** Given an input argument to the program, construct a new InFile
** object.
*/
static InFile *CreateInFile(char *zArg, int *pnErr){
  int nSrc;
  char *zSrc;
  InFile *pFile;
  int i;

  /* 
  ** Get the name of the input file to be scanned
  */
  zSrc = zArg;
  for(nSrc=0; zSrc[nSrc] && zArg[nSrc]!=':'; nSrc++){}
  pFile = SafeMalloc( sizeof(InFile) );
  memset(pFile,0,sizeof(InFile));
  pFile->zSrc = StrDup(zSrc,nSrc);

  /* Figure out if we are dealing with C or C++ code.  Assume any
  ** file with ".c" or ".h" is C code and all else is C++.
  */
  if( nSrc>2 && zSrc[nSrc-2]=='.' && (zSrc[nSrc-1]=='c' || zSrc[nSrc-1]=='h')){
    pFile->flags &= ~DP_Cplusplus;
  }else{
    pFile->flags |= DP_Cplusplus;
  }

  /*
  ** If a separate header file is specified, use it
  */
  if( zSrc[nSrc]==':' ){
    int nHdr;
    char *zHdr;
    zHdr = &zSrc[nSrc+1];
    for(nHdr=0; zHdr[nHdr] && zHdr[nHdr]!=':'; nHdr++){}
    pFile->zHdr = StrDup(zHdr,nHdr);
  }

  /* Look for any 'c' or 'C' in the suffix of the file name and change
  ** that character to 'h' or 'H' respectively.  If no 'c' or 'C' is found,
  ** then assume we are dealing with a header.
  */
  else{
    int foundC = 0;
    pFile->zHdr = StrDup(zSrc,nSrc);
    for(i = nSrc-1; i>0 && pFile->zHdr[i]!='.'; i--){
      if( pFile->zHdr[i]=='c' ){
        foundC = 1;
        pFile->zHdr[i] = 'h';
      }else if( pFile->zHdr[i]=='C' ){
        foundC = 1;
        pFile->zHdr[i] = 'H';
      }
    }
    if( !foundC ){
      SafeFree(pFile->zHdr);
      pFile->zHdr = 0;
    }
  }

  /*
  ** If pFile->zSrc contains no 'c' or 'C' in its extension, it
  ** must be a header file.   In that case, we need to set the 
  ** PS_Interface flag.
  */
  pFile->flags |= PS_Interface;
  for(i=nSrc-1; i>0 && zSrc[i]!='.'; i--){
    if( zSrc[i]=='c' || zSrc[i]=='C' ){
      pFile->flags &= ~PS_Interface;
      break;
    }
  }

  /* Done! 
  */
  return pFile;
}

/* MS-Windows and MS-DOS both have the following serious OS bug:  the
** length of a command line is severely restricted.  But this program
** occasionally requires long command lines.  Hence the following
** work around.
**
** If the parameters "-f FILENAME" appear anywhere on the command line,
** then the named file is scanned for additional command line arguments.
** These arguments are substituted in place of the "FILENAME" argument
** in the original argument list.
**
** This first parameter to this routine is the index of the "-f"
** parameter in the argv[] array.  The argc and argv are passed by
** pointer so that they can be changed.
**
** Parsing of the parameters in the file is very simple.  Parameters
** can be separated by any amount of white-space (including newlines
** and carriage returns.)  There are now quoting characters of any
** kind.  The length of a token is limited to about 1000 characters.
*/
static void AddParameters(int index, int *pArgc, char ***pArgv){
  int argc = *pArgc;      /* The original argc value */
  char **argv = *pArgv;   /* The original argv value */
  int newArgc;            /* Value for argc after inserting new arguments */
  char **zNew = 0;        /* The new argv after this routine is done */
  char *zFile;            /* Name of the input file */
  int nNew = 0;           /* Number of new entries in the argv[] file */
  int nAlloc = 0;         /* Space allocated for zNew[] */
  int i;                  /* Loop counter */
  int n;                  /* Number of characters in a new argument */
  int c;                  /* Next character of input */
  int startOfLine = 1;    /* True if we are where '#' can start a comment */
  FILE *in;               /* The input file */
  char zBuf[1000];        /* A single argument is accumulated here */

  if( index+1==argc ) return;
  zFile = argv[index+1];
  in = fopen(zFile,"r");
  if( in==0 ){
    fprintf(stderr,"Can't open input file \"%s\"\n",zFile);
    exit(1);
  }
  c = ' ';
  while( c!=EOF ){
    while( c!=EOF && isspace(c) ){
      if( c=='\n' ){
        startOfLine = 1;
      }
      c = getc(in); 
      if( startOfLine && c=='#' ){
        while( c!=EOF && c!='\n' ){
          c = getc(in);
        }
      }
    }
    n = 0;
    while( c!=EOF && !isspace(c) ){
      if( n<sizeof(zBuf)-1 ){ zBuf[n++] = c; }
      startOfLine = 0;
      c = getc(in);
    }
    zBuf[n] = 0;
    if( n>0 ){
      nNew++;
      if( nNew + argc > nAlloc ){
        if( nAlloc==0 ){
          nAlloc = 100 + argc;
          zNew = malloc( sizeof(char*) * nAlloc );
        }else{
          nAlloc *= 2;
          zNew = realloc( zNew, sizeof(char*) * nAlloc );  
        }
      }
      if( zNew ){
        int j = nNew + index;
        zNew[j] = malloc( n + 1 );
        if( zNew[j] ){
          strcpy( zNew[j], zBuf );
        }
      }
    }
  }
  newArgc = argc + nNew - 1;
  for(i=0; i<=index; i++){
    zNew[i] = argv[i];
  }
  for(i=nNew + index + 1; i<newArgc; i++){
    zNew[i] = argv[i + 1 - nNew];
  }
  zNew[newArgc] = 0;
  *pArgc = newArgc;
  *pArgv = zNew;
}

#ifdef NOT_USED
/*
** Return the time that the given file was last modified.  If we can't
** locate the file (because, for example, it doesn't exist), then
** return 0.
*/
static unsigned int ModTime(const char *zFilename){
  unsigned int mTime = 0;
  struct stat sStat;
  if( stat(zFilename,&sStat)==0 ){
    mTime = sStat.st_mtime;
  }
  return mTime;
}
#endif

/*
** Print a usage comment for this program.
*/
static void Usage(const char *argv0, const char *argvN){
  fprintf(stderr,"%s: Illegal argument \"%s\"\n",argv0,argvN);
  fprintf(stderr,"Usage: %s [options] filename...\n"
    "Options:\n"
    "  -h          Generate a single .h to standard output.\n"
    "  -H          Like -h, but only output EXPORT declarations.\n"
    "  -v          (verbose) Write status information to the screen.\n"
    "  -doc        Generate no header files.  Instead, output information\n"
    "              that can be used by an automatic program documentation\n"
    "              and cross-reference generator.\n"
    "  -local      Generate prototypes for \"static\" functions and\n"
    "              procedures.\n"
    "  -f FILE     Read additional command-line arguments from the file named\n"
    "              \"FILE\".\n"
#ifdef DEBUG
    "  -! MASK     Set the debugging mask to the number \"MASK\".\n"
#endif
    "  --          Treat all subsequent comment-line parameters as filenames,\n"
    "              even if they begin with \"-\".\n",
    argv0
  );
}

/*
** The following text contains a few simple #defines that we want
** to be available to every file.
*/
static char zInit[] = 
  "#define INTERFACE 0\n"
  "#define EXPORT_INTERFACE 0\n"
  "#define LOCAL_INTERFACE 0\n"
  "#define EXPORT\n"
  "#define LOCAL static\n"
  "#define PUBLIC\n"
  "#define PRIVATE\n"
  "#define PROTECTED\n"
;

#if TEST==0
int main(int argc, char **argv){
  int i;                /* Loop counter */
  int nErr = 0;         /* Number of errors encountered */
  Token *pList;         /* List of input tokens for one file */
  InFile *pFileList = 0;/* List of all input files */
  InFile *pTail = 0;    /* Last file on the list */
  InFile *pFile;        /* for looping over the file list */
  int h_flag = 0;       /* True if -h is present.  Output unified header */
  int H_flag = 0;       /* True if -H is present.  Output EXPORT header */
  int v_flag = 0;       /* Verbose */
  int noMoreFlags;      /* True if -- has been seen. */
  FILE *report;         /* Send progress reports to this, if not NULL */

  noMoreFlags = 0;
  for(i=1; i<argc; i++){
    if( argv[i][0]=='-' && !noMoreFlags ){
      switch( argv[i][1] ){
        case 'h':   h_flag = 1;   break;
        case 'H':   H_flag = 1;   break;
        case 'v':   v_flag = 1;   break;
        case 'd':   doc_flag = 1; proto_static = 1; break;
        case 'l':   proto_static = 1; break;
        case 'f':   AddParameters(i, &argc, &argv); break;
        case '-':   noMoreFlags = 1;   break;
#ifdef DEBUG
        case '!':   i++;  debugMask = strtol(argv[i],0,0); break;
#endif
        default:    Usage(argv[0],argv[i]); return 1;
      }
    }else{
      pFile = CreateInFile(argv[i],&nErr);
      if( pFile ){
        if( pFileList ){
          pTail->pNext = pFile;
          pTail = pFile;
        }else{
          pFileList = pTail = pFile;
        }
      }
    }
  }
  if( h_flag && H_flag ){
    h_flag = 0;
  }
  if( v_flag ){
    report = (h_flag || H_flag) ? stderr : stdout;
  }else{
    report = 0;
  }
  if( nErr>0 ){
    return nErr;
  }
  for(pFile=pFileList; pFile; pFile=pFile->pNext){
    char *zFile;

    zFilename = pFile->zSrc;
    if( zFilename==0 ) continue;
    zFile = ReadFile(zFilename);
    if( zFile==0 ){
      fprintf(stderr,"Can't read input file \"%s\"\n",zFilename);
      nErr++;
      continue;
    }
    if( strncmp(zFile,zTopLine,nTopLine)==0 ){
      pFile->zSrc = 0;
    }else{
      if( report ) fprintf(report,"Reading %s...\n",zFilename);
      pList = TokenizeFile(zFile,&pFile->idTable);
      if( pList ){
        nErr += ParseFile(pList,pFile->flags);
        FreeTokenList(pList);
      }else if( zFile[0]==0 ){
        fprintf(stderr,"Input file \"%s\" is empty.\n", zFilename);
        nErr++;
      }else{
        fprintf(stderr,"Errors while processing \"%s\"\n", zFilename);
        nErr++;
      }
    }
    if( !doc_flag ) SafeFree(zFile);
    if( doc_flag ) PrintModuleRecord(zFile,zFilename);
  }
  if( nErr>0 ){
    return nErr;
  }
#ifdef DEBUG
  if( debugMask & DECL_DUMP ){
    DumpDeclList();
    return nErr;
  }
#endif
  if( doc_flag ){
    DocumentationDump();
    return nErr;
  }
  zFilename = "--internal--";
  pList = TokenizeFile(zInit,0);
  if( pList==0 ){
    return nErr+1;
  }
  ParseFile(pList,PS_Interface);
  FreeTokenList(pList);
  if( h_flag || H_flag ){
    nErr += MakeGlobalHeader(H_flag);
  }else{
    for(pFile=pFileList; pFile; pFile=pFile->pNext){
      if( pFile->zSrc==0 ) continue;
      nErr += MakeHeader(pFile,report,0);
    }
  }
  return nErr;
}
#endif
Deleted src/makeheaders.html.
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<html>
<head><title>The Makeheaders Program</title></head>
<body bgcolor=white>
<h1 align=center>The Makeheaders Program</h1>


<p>
This document describes <em>makeheaders</em>,
a tool that automatically generates ``<code>.h</code>''
files for a C or C++ programming project.
</p>


<h2>Table Of Contents</h2>

<ul>
<li><a href=makeheaders.html#H0002>1,0 Background</a>
<ul>
<li><a href=makeheaders.html#H0003>1.1 Problems With The Traditional Approach</a>

<li><a href=makeheaders.html#H0004>1.2 The Makeheaders Solution</a>
</ul>
<li><a href=makeheaders.html#H0005>2.0 Running The Makeheaders Program</a>

<li><a href=makeheaders.html#H0006>3.0 Preparing Source Files For Use With Makeheaders</a>
<ul>
<li><a href=makeheaders.html#H0007>3.1 The Basic Setup</a>

<li><a href=makeheaders.html#H0008>3.2 What Declarations Get Copied</a>

<li><a href=makeheaders.html#H0009>3.3 How To Avoid Having To Write Any Header Files</a>

<li><a href=makeheaders.html#H0010>3.4 Designating Declarations For Export</a>

<li><a href=makeheaders.html#H0011>3.5 Local declarations processed by makeheaders</a>

<li><a href=makeheaders.html#H0012>3.6 Using Makeheaders With C++ Code</a>

<li><a href=makeheaders.html#H0013>3.7 Conditional Compilation</a>

<li><a href=makeheaders.html#H0014>3.8 Caveats</a>
</ul>
<li><a href=makeheaders.html#H0015>4.0 Using Makeheaders To Generate Documentation</a>

<li><a href=makeheaders.html#H0016>5.0 Compiling The Makeheaders Program</a>

<li><a href=makeheaders.html#H0017>6.0 Summary And Conclusion</a>
</ul><a name=H0002>
<h2>1.0 Background</h2>

<p>
A piece of C source code can be one of two things:
a <em>declaration</em> or a <em>definition</em>.
A declaration is source text that gives information to the
compiler but doesn't directly result in any code being generated.
A definition is source text that results in executable machine
instructions or initialization data.
(These two terms are sometimes used inconsistently by other authors.
In particular, many people reverse the meanings of these words when
discussing Pascal or Ada code.
The meanings described here are the same as used in the ANSI-C
standards document.)
</p>

<p>
Declarations in C include things such as the following:
<ul>
<li> Typedefs.
<li> Structure, union and enumeration declarations.
<li> Function and procedure prototypes.
<li> Preprocessor macros and #defines.
<li> ``extern'' variable declarations.
</ul>
</p>

<p>
Definitions in C, on the other hand, include these kinds of things:
<ul>
<li> Variable definitions.
<li> The bodies of functions and procedures.
<li> Initialization data.
</ul>
</p>

<p>
The distinction between a declaration and a definition is common in
modern software engineering.
Another way of looking at the difference is that the declaration
is the <em>interface</em> and the definition is the <em>implementation</em>.
</p>

<p>
In C programs, it has always been the tradition that declarations are
put in files with the ``<code>.h</code>'' suffix and definitions are
placed in ``<code>.c</code>'' files.
The .c files contain ``<code>#include</code>'' preprocessor statements
that cause the contents of .h files to be included as part of the
source code when the .c file is compiled.
In this way, the .h files define the interface to a subsystem and
the .c files define how the subsystem is implemented.
</p>

<a name=H0003>
<h3>1.1 Problems With The Traditional Approach</h3>

<p>
As the art of computer programming continues to advance, and the size
and complexity of programs continues to swell, the traditional C
approach of placing declarations and definitions in separate files begins
to present the programmer with logistics and
maintenance problems.
To wit:
</p>

<p>
<ol>
<p><li>
In large codes with many source files, it becomes difficult to determine
which .h files should be included in which .c files.
<p><li>
It is typically the case the a .h file will be forced to include
another .h files, which in turn might include other .h files,
and so forth.
The .c file must be recompiled when any of the .h files in this chain
are altered, but it can be difficult to determine what .h files are found
in the include chain.
A frequent Makefile error is to omit some .h files from a dependency
list even though those files are on the include file chain.
<p><li>
Some information is common to both the declaration and the definition of
an object in C, and so must be repeated in both the .h and the .c files
for that object.
In a large project, it can become increasingly difficult to keep the two
files in sync.
<p><li>
When a .c file includes a .h file and the .h files changes, the .c file
must be recompiled, even if the part of the .h file that changed is not
actually used by the .c file.
In a large program, it is generally the case that almost every .c file ends up
depending on one or two of the more important .h files, and so when those .h
files change, the entire program must be recompiled.
It also happens that those important .h files tend to be the ones that
change most frequently.
This means that the entire program must be recompiled frequently,
leading to a lengthy modify-compile-test cycle and a corresponding
decrease in programmer productivity.
<p><li>
The C programming language requires that declarations depending upon 
each other must occur in a particular order.
In a program with complex, interwoven data structures, the correct
declaration order can become very difficult to determine manually, 
especially when the declarations involved are spread out over several
files.
</ol>
</p>

<a name=H0004>
<h3>1.2 The Makeheaders Solution</h3>

<p>
The makeheaders program is designed to ameliorate the problems associated
with the traditional C programming model by automatically generating
the interface information in the .h files from 
interface information contained in other .h files and
from implementation information in the .c files.
When the makeheaders program is run, it scans the source
files for a project,
then generates a series of new .h files, one for each .c file.
The generated .h files contain exactly those declarations required by the
corresponding .c files, no more and no less.
</p>

<p>
The makeheaders programming model overcomes all of the objections to the
traditional C programming model.
<ol>
<p><li>
Because all declarations needed by a .c file are contained in a
single .h file, there is never any question about what .h files
a .c will need to include.  If the .c file is named
<code>alpha.c</code> then it must include only the single .h file
named <code>alpha.h</code>.
(The .c file might also use some include files from the standard
library, such as <code>&lt;stdio.h&gt</code>, but that is another matter.)
<p><li>
The generated .h files do not include other .h files, and so there
are no include chains to worry about.
The file <code>alpha.c</code> depends on <code>alpha.h</code> and
nothing more.
<p><li>
There is still duplication in the .h and the .c file, but because
the duplicate information is automatically generated, it is no longer
a problem.
Simply rerun makeheaders to resynchronize everything.
<p><li>
The generated .h file contains the minimal set of declarations needed
by the .c file.
This means that when something changes, a minimal amount of recompilation
is required to produce an updated executable.
Experience has shown that this gives a dramatic improvement 
in programmer productivity by facilitating a rapid modify-compile-test
cycle during development.
<p><li>
The makeheaders program automatically sorts declarations into the
correct order, completely eliminating the wearisome and error-prone
task of sorting declarations by hand.
</ol>
<p>

<p>
In addition, the makeheaders program is fast and unintrusive.
It is a simple matter to incorporate makeheaders into a Makefile
so that makeheaders will be run automatically whenever the project
is rebuilt.
And the burden of running makeheaders is light.
It will easily process tens of thousands of lines of source
code per second.
</p>

<a name=H0005>
<h2>2.0 Running The Makeheaders Program</h2>

<p>
The makeheaders program is very easy to run.
If you have a collection of C source code and include files in the working
directory, then you can run makeheaders to generate appropriate .h
files using the following command:
<pre>
   makeheaders *.[ch]
</pre>
That's really all there is to it!
This command will generate one .h file for every .c file.
Any .h files that were generated by a prior run of makeheaders
are ignored,
but manually entered .h files
that contain structure declarations and so forth will be scanned and
the declarations will be copied into the generated .h files as
appropriate.
But if makeheaders sees that the .h file that it has generated is no
different from the .h file it generated last time, it doesn't update
the file.
This prevents the corresponding .c files from having to 
be needlessly recompiled.
</p>

<p>
There are several options to the makeheaders program that can
be used to alter its behavior.
The default behavior is to write a single .h file for each .c file and
to give the .h file the same base name as the .c file.
Instead of generating a whole mess of .h files, you can, if you choose,
generate a single big .h file that contains all declarations needed
by all the .c files.  Do this using the -h option to makeheaders.
As follows:
<pre>
   makeheaders -h *.[ch] >common.h
</pre>
With the -h option, the .h file is not actually written to a disk file but
instead appears on standard output, where you are free to redirect it
into the file of your choice.
</p>

<p>
A similar option is -H.  Like the lower-case -h option, big -H
generates a single include file on standard output.  But unlike
small -h, the big -H only emits prototypes and declarations that
have been designated as ``exportable''.
The idea is that -H will generate an include file that defines
the interface to a library.
More will be said about this in section 3.4.
</p>

<p>
Sometimes you want the base name of the .c file and the .h file to
be different.
For example, suppose you want the include file for <code>alpha.c</code>
to be called <code>beta.h</code>.
In this case, you would invoke makeheaders as follows:
<pre>
   makeheaders alpha.c:beta.h
</pre>
Any time a filename argument contains a colon, the name before the
colon is taken to be the name of the .c file and the name after the
colon is taken to be the name of the .h file.
You can't use the shell's wildcard mechanism with this approach, but that
normally isn't a problem in Makefiles, which is where this stuff
comes in handy.
</p>

<p>
If you want a particular file to be scanned by makeheaders but you
don't want makeheaders to generate a header file for that file,
then you can supply an empty header filename, like this:
<pre>
   makeheaders alpha.c beta.c gamma.c:
</pre>
In this example, makeheaders will scan the three files named
``alpha.c'',
``beta.c'' and
``gamma.c''
but because of the colon on the end of third filename
it will only generate headers for the first two files.
Unfortunately,
it is not possible to get makeheaders to process any file whose 
name contains a colon.
</p>

<p>
In a large project, the length of the command line for makeheaders
can become very long.
If the operating system doesn't support long command lines
(example: DOS and Win32) you may not be able to list all of the
input files in the space available.
In that case, you can use the ``-f'' option followed
by the name of a file to cause makeheaders to read command line
options and filename from the file instead of from the command line.
For example, you might prepare a file named ``mkhdr.dat''
that contains text like this:
<pre>
  src/alpha.c:hdr/alpha.h
  src/beta.c:hdr/beta.h
  src/gamma.c:hdr/gamma.h
  ...
</pre>
Then invoke makeheaders as follows:
<pre>
  makeheaders -f mkhdr.dat
</pre>
</p>

<p>
The ``-local'' option causes makeheaders to
generate of prototypes for ``static'' functions and
procedures.
Such prototypes are normally omitted.
</p>

<p>
Finally, makeheaders also includes a ``-doc'' option.
This command line option prevents makeheaders from generating any
headers at all.
Instead, makeheaders will write to standard output 
information about every definition and declaration that it encounters
in its scan of source files.
The information output includes the type of the definition or
declaration and any comment that preceeds the definition or
declaration.
The output is in a format that can be easily parsed, and is
intended to be read by another program that will generate
documentation about the program.
We'll talk more about this feature later.
</p>

<p>
If you forget what command line options are available, or forget
their exact name, you can invoke makeheaders using an unknown
command line option (like ``--help'' or ``-?'')
and it will print a summary of the available options on standard
error.
If you need to process a file whose name begins with ``-'',
you can prepend a ``./'' to its name in order to get it
accepted by the command line parser.
Or, you can insert the special option ``--'' on the command
line to cause all subsequent command line arguments to be treated as
filenames even if their names beginn with ``-''.
</p>

<a name=H0006>
<h2>3.0 Preparing Source Files For Use With Makeheaders</h2>

<p>
Very little has to be done to prepare source files for use with
makeheaders since makeheaders will read and understand ordinary
C code.
But it is important that you structure your files in a way that
makes sense in the makeheaders context.
This section will describe several typical uses of makeheaders.
</p>

<a name=H0007>
<h3>3.1 The Basic Setup</h3>

<p>
The simpliest way to use makeheaders is to put all definitions in
one or more .c files and all structure and type declarations in
separate .h files.
The only restriction is that you should take care to chose basenames 
for your .h files that are different from the basenames for you
.c files.
Recall that if your .c file is named (for example) ``alpha.c''
makeheaders will attempt to generate a corresponding header file
named ``alpha.h''.
For that reason, you don't want to use that name for
any of the .h files you write since that will prevent makeheaders
from generating the .h file automatically.
</p>

<p>
The structure of a .c file intented for use with makeheaders is very
simple.
All you have to do is add a single ``#include'' to the top
of the file that sources the header file that makeheaders will generate.
Hence, the beginning of a source file named ``alpha.c''
might look something like this:
</p>

<pre>
   /*
    * Introductory comment...
    */
   #include "alpha.h"

   /* The rest of your code... */
</pre>

<p>
Your manually generated header files require no special attention at all.
Code them as you normally would.
However, makeheaders will work better if you omit the
``#if'' statements people often put around the outside of
header files that prevent the files from being included more than once.
For example, to create a header file named ``beta.h'', many
people will habitually write the following:

<pre>
   #ifndef BETA_H
   #define BETA_H

   /* declarations for beta.h go here */

   #endif
</pre>

You can forego this cleverness with makeheaders.
Remember that the header files you write will never really be
included by any C code.
Instead, makeheaders will scan your header files to extract only
those declarations that are needed by individual .c files and then
copy those declarations to the .h files corresponding to the .c files.
Hence, the ``#if'' wrapper serves no useful purpose.
But it does make makeheaders work harder, forcing it to put
the statements

<pre>
   #if !defined(BETA_H)
   #endif
</pre>

around every declaration that it copies out of your header file.
No ill effect should come of this, but neither is there any benefit.
</p>

<p>
Having prepared your .c and .h files as described above, you can
cause makeheaders to generate its .h files using the following simple
command:

<pre>
   makeheaders *.[ch]
</pre>

The makeheaders program will scan all of the .c files and all of the
manually written .h files and then automatically generate .h files
corresponding to all .c files.  
</p>

<p>
Note that
the wildcard expression used in the above example, 
``<code>*.[ch]</code>'',
will expand to include all .h files in the current directory, both
those entered manually be the programmer and others generated automatically
by a prior run of makeheaders.
But that is not a problem.
The makeheaders program will recognize and ignore any files it 
has previously generated that show up on its input list.
</p>

<a name=H0008>
<h3>3.2 What Declarations Get Copied</h3>

<p>
The following list details all of the code constructs that makeheaders
will extract and place in
the automatically generated .h files:
</p>

<ul>
<p><li>
When a function is defined in any .c file, a prototype of that function
is placed in the generated .h file of every .c file that
calls the function.</p>

<P>If the ``static'' keyword of C appears at the beginning
of the function definition, the prototype is suppressed.
If you use the ``LOCAL'' keyword where you would normally
say ``static'', then a prototype is generated, but it
will only appear in the single header file that corresponds to the
source file containing the function.  For example, if the file
<code>alpha.c</code> contains the following:
<pre>
  LOCAL int testFunc(void){
    return 0;
  }
</pre>
Then the header file <code>alpha.h</code> will contain
<pre>
  #define LOCAL static
  LOCAL int testFunc(void);
</pre>
However, no other generated header files will contain a prototype for
<code>testFunc()</code> since the function has only file scope.</p>

<p>When the ``LOCAL'' keyword is used, makeheaders will also
generate a #define for LOCAL, like this:
<pre>
   #define LOCAL static
</pre>
so that the C compiler will know what it means.</p>

<p>If you invoke makeheaders with a ``-local'' command-line
option, then it treats the ``static'' keyword like
``LOCAL'' and generates prototypes in the header file
that corresponds to the source file containing the function defintiion.</p>

<p><li>
When a global variable is defined in a .c file, an ``extern''
declaration of that variable is placed in the header of every
.c file that uses the variable.
</p>

<p><li>
When a structure, union or enumeration declaration or a
function prototype or a C++ class declaration appears in a
manually produced .h file, that declaration is copied into the 
automatically generated
.h files of all .c files that use the structure, union, enumeration,
function or class.
But declarations that appear in a
.c file are considered private to that .c file and are not copied into
any automatically generated files.
</p>

<p><li>
All #defines and typedefs that appear in manually produced .h files
are copied into automatically generated .h files as needed.
Similar constructs that appear in .c files are considered private to
those files and are not copied.
</p>

<p><li>
When a structure, union or enumeration declaration appears in a .h
file, makeheaders will automatically
generate a typedef that allows the declaration to be referenced without
the ``struct'', ``union'' or ``enum''
qualifier.
In other words, if makeheaders sees the code:
<pre>
  struct Examp { /* ... */ };
</pre>
it will automatically generate a corresponding typedef like this:
<pre>
  typedef struct Examp Examp;
</pre>
</p>

<p><li>
Makeheaders generates an error message if it encounters a function or
variable definition within a .h file.
The .h files are suppose to contain only interface, not implementation.
C compilers will not enforce this convention, but makeheaders does.
</ul>

<p>
As a final note, we observe that automatically generated declarations
are ordered as required by the ANSI-C programming language.
If the declaration of some structure ``X'' requires a prior
declaration of another structure ``Y'', then Y will appear
first in the generated headers.
</p>

<a name=H0009>
<h3>3.3 How To Avoid Having To Write Any Header Files</h3>

<p>
In my experience, large projects work better if all of the manually
written code is placed in .c files and all .h files are generated
automatically.
This is slightly different for the traditional C method of placing
the interface in .h files and the implementation in .c files, but
it is a refreshing change that brings a noticable improvement to the
coding experience.
Others, I believe, share this view since I've
noticed recent languages (ex: java, tcl, perl, awk) tend to
support the one-file approach to coding as the only option.
</p>

<p>
The makeheaders program supports putting both
interface and implementation into the same source file.
But you do have to tell makeheaders which part of the source file is the
interface and which part is the implementation.
Makeheaders has to know this in order to be able to figure out whether or
not structures declarations, typedefs, #defines and so forth should
be copied into the generated headers of other source files.
</p>

<p>
You can instruct makeheaders to treat any part of a .c file as if
it were a .h file by enclosing that part of the .c file within:
<pre>
   #if INTERFACE
   #endif
</pre>
Thus any structure definitions that appear after the 
``#if INTERFACE'' but before the corresponding 
``#endif'' are eligable to be copied into the 
automatically generated
.h files of other .c files.
</p>

<p>
If you use the ``#if INTERFACE'' mechanism in a .c file,
then the generated header for that .c file will contain a line
like this:
<pre>
   #define INTERFACE 0
</pre>
In other words, the C compiler will never see any of the text that
defines the interface.
But makeheaders will copy all necessary definitions and declarations
into the .h file it generates, so .c files will compile as if the
declarations were really there.
This approach has the advantage that you don't have to worry with
putting the declarations in the correct ANSI-C order -- makeheaders
will do that for you automatically.
</p>

<p>
Note that you don't have to use this approach exclusively.
You can put some declarations in .h files and others within the
``#if INTERFACE'' regions of .c files.
Makeheaders treats all declarations alike, no matter where they
come from.
You should also note that a single .c file can contain as many
``#if INTERFACE'' regions as desired.
</p>

<a name=H0010>
<h3>3.4 Designating Declarations For Export</h3>

<p>
In a large project, one will often construct a hierarchy of
interfaces.
For example, you may have a group of 20 or so files that form
a library used in several other parts of the system.
Each file in this library will present two interfaces.
One interface will be the routines and data structures it is
willing to share with other files in the same library, and the
second interface is those routines and data structures it wishes
to make available to other subsystems.
(The second interface is normally a subset of the first.)
Ordinary C does not provide support for a tiered interface
like this, but makeheaders does.
</p>

<p>
Using makeheaders, it is possible to designate routines and data
structures as being for ``export''.
Exported objects are visible not only to other files within the
same library or subassembly but also to other
libraries and subassemblies in the larger program.
By default, makeheaders only makes objects visible to other members
of the same library.
</p>

<p>
That isn't the complete truth, actually.
The semantics of C are such that once an object becomes visible
outside of a single source file, it is also visible to any user
of the library that is made from the source file.
Makeheaders can not prevent outsiders for using non-exported resources,
but it can discourage the practice by refusing to provide prototypes
and declarations for the services it does not want to export.
Thus the only real effect of the making an object exportable is
to include it in the output makeheaders generates when it is run
using the -H command line option.
This is not a perfect solution, but it works well in practice.
</p>

<p>
But trouble quickly arises when we attempt to devise a mechanism for
telling makeheaders which prototypes it should export and which it should
keep local.
The built-in ``static'' keyword of C works well for prohibiting
prototypes from leaving a single source file, but because C doesn't
support a linkage hierarchy, there is nothing in the C language to help us.
We'll have to invite our own keyword: ``EXPORT''
</p>

<p>
Makeheaders allows the EXPORT keyword to precede any function or
procedure definition.
The routine following the EXPORT keyword is then eligable to appear
in the header file generated using the -H command line option.
Note that if a .c file contains the EXPORT keyword, makeheaders will
put the macro
<pre>
   #define EXPORT
</pre>
in the header file it generates for the .c file so that the EXPORT keyword
will never be seen by the C compiler.
</p>

<p>
But the EXPORT keyword only works for function and procedure definitions.
For structure, union and enum definitions, typedefs, #defines and
class declarations, a second mechanism is used.
Just as any declarations or definition contained within
<pre>
   #if INTERFACE
   #endif
</pre>
are visible to all files within the library, any declarations
or definitions within
<pre>
   #if EXPORT_INTERFACE
   #endif
</pre>
will become part of the exported interface.
The ``#if EXPORT_INTERFACE'' mechanism can be used in either
.c or .h files.
(The ``#if INTERFACE'' can also be used in both .h and .c files, 
but since it's use in a .h file would be redundant, we haven't mentioned
it before.)
</p>

<a name=H0011>
<h3>3.5 Local declarations processed by makeheaders</h3>

<p>
Structure declarations and typedefs that appear in .c files are normally
ignored by makeheaders.
Such declarations are only intended for use by the source file in which
they appear and so makeheaders doesn't need to copy them into any
generated header files.
We call such declarations ``private''.
</p>

<p>
Sometimes it is convenient to have makeheaders sort a sequence
of private declarations into the correct order for us automatically.
Or, we could have static functions and procedures for which we would like
makeheaders to generate prototypes, but the arguments to these
functions and procedures uses private declarations.
In both of these cases, we want makeheaders to be aware of the 
private declarations and copy them into the local header file,
but we don't want makeheaders to propagate the
declarations outside of the file in which they are declared.
</p>

<p>
When this situation arises, enclose the private declarations
within
<pre>
  #if LOCAL_INTERFACE
  #endif
</pre>
A ``LOCAL_INTERFACE'' block works very much like the
``INTERFACE'' and ``EXPORT_INTERFACE''
blocks described above, except that makeheaders insures that the
objects declared in a LOCAL_INTERFACE are only visible to the
file containing the LOCAL_INTERFACE.
</p>

<a name=H0012>
<h3>3.6 Using Makeheaders With C++ Code</h3>

<p>
You can use makeheaders to generate header files for C++ code, in
addition to C.
Makeheaders will recognize and copy both ``class'' declarations
and inline function definitions, and it knows not to try to generate
prototypes for methods.
</p>

<p>
In fact, makeheaders is smart enough to be used in projects that employ
a mixture of C and C++.
For example, if a C function is called from within a C++ code module,
makeheaders will know to prepend the text
<pre>
   extern "C"
</pre>
to the prototype for that function in the C++ header file.
Going the other way,
if you try to call a C++ function from within C, an
appropriate error message is issued, since C++ routines can not
normally be called by C code (due to fact that most C++ compilers
use name mangling to facilitate type-safe linkage.)
</p>

<p>
No special command-line options are required to use makeheaders with
C++ input.  Makeheaders will recognize that its source code is C++
by the suffix on the source code filename.  Simple ".c" or ".h" suffixes
are assumed to be ANSI-C.  Anything else, including ".cc", ".C" and
".cpp" is assumed to be C++.
The name of the header file generated by makeheaders is derived from
by the name of the source file by converting every "c" to "h" and
every "C" to "H" in the suffix of the filename.
Thus the C++ source
file ``alpha.cpp'' will induce makeheaders to
generate a header file named ``alpha.hpp''.
</p>

<p>
Makeheaders augments class definitions by inserting prototypes to
methods were appropriate.  If a method definition begins with one
of the special keywords <b>PUBLIC</b>, <b>PROTECTED</b>, or 
<b>PRIVATE</b> (in upper-case to distinguish them from the regular
C++ keywords with the same meaning) then a prototype for that
method will be inserted into the class definition.  If none of
these keywords appear, then the prototype is not inserted.  For
example, in the following code, the constructor is not explicitly
declared in the class definition but makeheaders will add it there
because of the PUBLIC keyword that appears before the constructor
definition.
</p>

<blockquote><pre>
#if INTERFACE
class Example1 {
private:
  int v1;
};
#endif
PUBLIC Example1::Example1(){
  v1 = 0;
}
</pre></blockquote>

<p>
The code above is equivalent to the following:
</p>

<blockquote><pre>
#if INTERFACE
class Example1 {
private:
  int v1;
public:
  Example1();
};
#endif
Example1::Example1(){
  v1 = 0;
}
</pre></blockquote>

<p>
The first form is preferred because only a single declaration of
the constructor is required.  The second form requires two declarations,
one in the class definition and one on the defintion of the constructor.
</p>

<h4>3.6.1 C++ Limitations</h4>

<p>
Makeheaders does not understand more recent
C++ syntax such as templates and namespaces.
Perhaps these issued will be addressed in future revisions.
</p>

<a name=H0013>
<h3>3.7 Conditional Compilation</h3>

<p>
The makeheaders program understands and tracks the conditional 
compilation constructs in the source code files it scans.
Hence, if the following code appears in a source file
<pre>
  #ifdef UNIX
  #  define WORKS_WELL  1
  #else
  #  define WORKS_WELL  0
  #endif
</pre>
then the next patch of code will appear in the generated header for
every .c file that uses the WORKS_WELL constant:
<pre>
  #if defined(UNIX)
  #  define WORKS_WELL 1
  #endif
  #if !defined(UNIX)
  #  define WORKS_WELL 0
  #endif
</pre>
The conditional compilation constructs can be nested to any depth.
Makeheaders also recognizes the special case of
<pre>
  #if 0
  #endif
</pre>
and treats the enclosed text as a comment.
</p>

<a name=H0014>
<h3>3.8 Caveats</h3>

<p>
The makeheaders system is designed to be robust
but it is possible for a devious programmer to fool the system,
usually with unhelpful consequences.
This subsection is a guide to helping you avoid trouble.
</p>

<p>
Makeheaders does not understand the old K&amp;R style of function
and procedure definitions.
It only understands the modern ANSI-C style, and will probably
become very confused if it encounters an old K&amp;R function.
You should take care to avoid putting K&amp;R function defintions
in your code, therefore.
</p>

<p>
Makeheaders does not understand when you define more than one
global variable with the same type separated by a comma.
In other words, makeheaders does not understand this:
<pre>
   int a = 4, b = 5;
</pre>
The makeheaders program wants every variable to have its own
definition.  Like this:
<pre>
   int a = 4;
   int b = 5;
</pre>
Notice that this applies to global variables only, not to variables
you declare inside your functions.
Since global variables ought to be exceedingly rare, and since it is
good style to declare them separately anyhow, this restriction is
not seen as a terrible hardship.
</p>

<p>
The makeheaders program processes its source file prior to sending
those files through the C preprocessor.
Hence, if you hide important structure information in preprocessor defines,
makeheaders might not be able to successfully extract the information
it needs from variables, functions and procedure definitions.
For example, if you write this:
<pre>
  #define BEGIN {
  #define END }
</pre>
at the beginning of your source file, and then try to create a function
definition like this:
<pre>
  char *StrDup(const char *zSrc)
    BEGIN
      /* Code here */
    END
</pre>
then makeheaders won't be able to find the end of the function definition
and bad things are likely to happen.
</p>

<p>
For most projects the code constructs that makeheaders cannot
handle are very rare.
As long as you avoid excessive cleverness, makeheaders will
probably be able to figure out what you want and will do the right
thing.
</p>

<a name=H0015>
<h2>4.0 Using Makeheaders To Generate Documentation</h2>

<p>
Many people have observed the advantages of generating program
documentation directly from the source code:
<ul>
<li> Less effort is involved.  It is easier to write a program than
     it is to write a program and a document.
<li> The documentation is more likely to agree with the code.
     When documentation is derived directly from the code, or is
     contained in comments immediately adjacent to the code, it is much
     more likely to be correct than if it is contained in a separate
     unrelated file in a different part of the source tree.
<li> Information is kept in only one place.  When a change occurs
     in the code, it is not necessary to make a corresponding change
     in a separate document.  Just rerun the documentation generator.
</ul>
The makeheaders program does not generate program documentation itself.
But you can use makeheaders to parse the program source code, extract
the information that is relavant to the documentation and to pass this
information to another tool to do the actual documentation preparation.
</p>

<p>
When makeheaders is run with the ``-doc'' option, it emits
no header files at all.
Instead, it does a complete dump of its internal tables to standard
outputs in a form that is easily parsed.
This output can then be used by another program (the implementation
of which is left as an exercise to the reader) that will use the
information to prepare suitable documentation.
</p>

<p>
The ``-doc'' option causes makeheaders to print information
to standard output about all of the following objects:
<ul>
<li> C++ Class declarations
<li> Structure and union declarations
<li> Enumerations
<li> Typedefs
<li> Procedure and function definitions
<li> Global variables
<li> Preprocessor macros (ex: ``#define'')
</ul>
For each of these objects, the following information is output:
<ul>
<li> The name of the object.
<li> The type of the object.  (Structure, typedef, macro, etc.)
<li> Flags to indicate if the declaration is exported (contained within
     an EXPORT_INTERFACE block) or local (contained with LOCAL_INTERFACE).
<li> A flag to indicate if the object is declared in a C++ file.
<li> The name of the file in which the object was declared.
<li> The complete text of any block comment that preceeds the declarations.
<li> If the declaration occurred inside a preprocessor conditional
     (``#if'') then the text of that conditional is provided.
<li> The complete text of a declaration for the object.
</ul>
The exact output format will not be described here.
It is simple to understand and parse and should be obvious to
anyone who inspects some sample output.
</p>

<a name=H0016>
<h2>5.0 Compiling The Makeheaders Program</h2>

<p>
The source code for makeheaders is a single file of ANSI-C code,
less than 3000 lines in length.
The program makes only modest demands of the system and C library
and should compile without alteration on most ANSI C compilers
and on most operating systems.
It is known to compile using several variations of GCC for Unix
as well as Cygwin32 and MSVC 5.0 for Win32.
</p>

<a name=H0017>
<h2>6.0 Summary And Conclusion</h2>

<p>
The makeheaders program will automatically generate a minimal header file 
for each of a set of C source and header files, and will
generate a composite header file for the entire source file suite,
for either internal or external use.
It can also be used as the parser in an automated program
documentation system.
</p>

<p>
The makeheaders program has been in use since 1994,
in a wide variety of projects under both UNIX and Win32.
In every project where it has been used, makeheaders has proven
to be a very helpful aid
in the construction and maintenance of large C codes.
In at least two cases, makeheaders has facilitated development
of programs that would have otherwise been all but impossible
due to their size and complexity.
</p>
</body>
Deleted src/makemake.tcl.
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#!/usr/bin/tclsh
#
# Run this TCL script to generate the "main.mk" makefile.
#

# Basenames of all source files that get preprocessed using
# "translate" and "makeheaders"
#
set src {
  add
  allrepo
  attach
  bag
  blob
  branch
  browse
  captcha
  cgi
  checkin
  checkout
  clearsign
  clone
  comformat
  configure
  content
  db
  delta
  deltacmd
  descendants
  diff
  diffcmd
  doc
  encode
  file
  finfo
  graph
  http
  http_socket
  http_transport
  info
  login
  main
  manifest
  md5
  merge
  merge3
  name
  pivot
  pqueue
  printf
  rebuild
  report
  rss
  schema
  search
  setup
  sha1
  shun
  skins
  stat
  style
  sync
  tag
  th_main
  timeline
  tkt
  tktsetup
  undo
  update
  url
  user
  verify
  vfile
  wiki
  wikiformat
  winhttp
  xfer
  zip
}

# Name of the final application
#
set name fossil

puts {# DO NOT EDIT
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl >main.mk"
# to regenerate this file.
#
# This file is included by linux-gcc.mk or linux-mingw.mk or possible
# some other makefiles.  This file contains the rules that are common
# to building regardless of the target.
#

XTCC = $(TCC) $(CFLAGS) -I. -I$(SRCDIR)

}
puts -nonewline "SRC ="
foreach s [lsort $src] {
  puts -nonewline " \\\n  \$(SRCDIR)/$s.c"
}
puts "\n"
puts -nonewline "TRANS_SRC ="
foreach s [lsort $src] {
  puts -nonewline " \\\n  ${s}_.c"
}
puts "\n"
puts -nonewline "OBJ ="
foreach s [lsort $src] {
  puts -nonewline " \\\n \$(OBJDIR)/$s.o"
}
puts "\n"
puts "APPNAME = $name\$(E)"
puts "\n"

puts {
all:	$(OBJDIR) $(APPNAME)

install:	$(APPNAME)
	mv $(APPNAME) $(INSTALLDIR)

$(OBJDIR):
	-mkdir $(OBJDIR)

translate:	$(SRCDIR)/translate.c
	$(BCC) -o translate $(SRCDIR)/translate.c

makeheaders:	$(SRCDIR)/makeheaders.c
	$(BCC) -o makeheaders $(SRCDIR)/makeheaders.c

mkindex:	$(SRCDIR)/mkindex.c
	$(BCC) -o mkindex $(SRCDIR)/mkindex.c

# WARNING. DANGER. Running the testsuite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
test:	$(APPNAME)
	$(TCLSH) test/tester.tcl $(APPNAME)

VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest
	awk '{ printf "#define MANIFEST_UUID \"%s\"\n", $$1}' \
		$(SRCDIR)/../manifest.uuid >VERSION.h
	awk '{ printf "#define MANIFEST_VERSION \"[%.10s]\"\n", $$1}' \
		$(SRCDIR)/../manifest.uuid >>VERSION.h
	awk '$$1=="D"{printf "#define MANIFEST_DATE \"%s %s\"\n",\
		substr($$2,1,10),substr($$2,12)}' \
		$(SRCDIR)/../manifest >>VERSION.h

$(APPNAME):	headers $(OBJ) $(OBJDIR)/sqlite3.o $(OBJDIR)/th.o $(OBJDIR)/th_lang.o
	$(TCC) -o $(APPNAME) $(OBJ) $(OBJDIR)/sqlite3.o $(OBJDIR)/th.o $(OBJDIR)/th_lang.o $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:	
	# noop

clean:	
	rm -f $(OBJDIR)/*.o *_.c $(APPNAME) VERSION.h
	rm -f translate makeheaders mkindex page_index.h headers}

set hfiles {}
foreach s [lsort $src] {lappend hfiles $s.h}
puts "\trm -f $hfiles\n"

set mhargs {}
foreach s [lsort $src] {
  append mhargs " ${s}_.c:$s.h"
  set extra_h($s) {}
}
append mhargs " \$(SRCDIR)/sqlite3.h"
append mhargs " \$(SRCDIR)/th.h"
append mhargs " VERSION.h"
puts "page_index.h: \$(TRANS_SRC) mkindex"
puts "\t./mkindex \$(TRANS_SRC) >$@"
puts "headers:\tpage_index.h makeheaders VERSION.h"
puts "\t./makeheaders $mhargs"
puts "\ttouch headers"
puts "headers: Makefile"
puts "Makefile:"
set extra_h(main) page_index.h

foreach s [lsort $src] {
  puts "${s}_.c:\t\$(SRCDIR)/$s.c translate"
  puts "\t./translate \$(SRCDIR)/$s.c >${s}_.c\n"
  puts "\$(OBJDIR)/$s.o:\t${s}_.c $s.h $extra_h($s) \$(SRCDIR)/config.h"
  puts "\t\$(XTCC) -o \$(OBJDIR)/$s.o -c ${s}_.c\n"
  puts "$s.h:\theaders"
#  puts "\t./makeheaders $mhargs\n\ttouch headers\n"
#  puts "\t./makeheaders ${s}_.c:${s}.h\n"
}


puts "\$(OBJDIR)/sqlite3.o:\t\$(SRCDIR)/sqlite3.c"
set opt {-DSQLITE_OMIT_LOAD_EXTENSION=1}
append opt " -DSQLITE_THREADSAFE=0 -DSQLITE_DEFAULT_FILE_FORMAT=4"
#append opt " -DSQLITE_ENABLE_FTS3=1"
append opt " -Dlocaltime=fossil_localtime"
append opt " -DSQLITE_ENABLE_LOCKING_STYLE=0"
puts "\t\$(XTCC) $opt -c \$(SRCDIR)/sqlite3.c -o \$(OBJDIR)/sqlite3.o\n"

puts "\$(OBJDIR)/th.o:\t\$(SRCDIR)/th.c"
puts "\t\$(XTCC) -I\$(SRCDIR) -c \$(SRCDIR)/th.c -o \$(OBJDIR)/th.o\n"

puts "\$(OBJDIR)/th_lang.o:\t\$(SRCDIR)/th_lang.c"
puts "\t\$(XTCC) -I\$(SRCDIR) -c \$(SRCDIR)/th_lang.c -o \$(OBJDIR)/th_lang.o\n"
Changes to src/manifest.c.
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#include "manifest.h"
#include <assert.h>

#if INTERFACE
/*
** Types of control files
*/
#define CFTYPE_ANY        0
#define CFTYPE_MANIFEST   1
#define CFTYPE_CLUSTER    2
#define CFTYPE_CONTROL    3
#define CFTYPE_WIKI       4
#define CFTYPE_TICKET     5
#define CFTYPE_ATTACHMENT 6
#define CFTYPE_EVENT      7
#define CFTYPE_FORUM      8

/*
** File permissions used by Fossil internally.
*/
#define PERM_REG          0     /*  regular file  */
#define PERM_EXE          1     /*  executable    */
#define PERM_LNK          2     /*  symlink       */

/*
** Flags for use with manifest_crosslink().
*/
#define MC_NONE           0  /*  default handling           */
#define MC_PERMIT_HOOKS   1  /*  permit hooks to execute    */
#define MC_NO_ERRORS      2  /*  do not issue errors for a bad parse */

/*
** A single F-card within a manifest
*/
struct ManifestFile {
  char *zName;           /* Name of a file */
  char *zUuid;           /* Artifact hash for the file */
  char *zPerm;           /* File permissions */
  char *zPrior;          /* Prior name if the name was changed */
};


/*
** A parsed manifest or cluster.
*/
struct Manifest {
  Blob content;         /* The original content blob */
  int type;             /* Type of artifact.  One of CFTYPE_xxxxx */
  int rid;              /* The blob-id for this manifest */
  const char *zBaseline;/* Baseline manifest.  The B card. */
  Manifest *pBaseline;  /* The actual baseline manifest */
  char *zComment;       /* Decoded comment.  The C card. */
  double rDate;         /* Date and time from D card.  0.0 if no D card. */
  char *zUser;          /* Name of the user from the U card. */
  char *zRepoCksum;     /* MD5 checksum of the baseline content.  R card. */
  char *zWiki;          /* Text of the wiki page.  W card. */
  char *zWikiTitle;     /* Name of the wiki page. L card. */
  char *zMimetype;      /* Mime type of wiki or comment text.  N card.  */
  char *zThreadTitle;   /* The forum thread title. H card */
  double rEventDate;    /* Date of an event.  E card. */
  char *zEventId;       /* Artifact hash for an event.  E card. */
  char *zTicketUuid;    /* UUID for a ticket. K card. */
  char *zAttachName;    /* Filename of an attachment. A card. */
  char *zAttachSrc;     /* UUID of document being attached. A card. */
  char *zAttachSrc;     /* Artifact hash for document being attached. A card. */
  char *zAttachTarget;  /* Ticket or wiki that attachment applies to.  A card */
  char *zThreadRoot;    /* Thread root artifact.  G card */
  char *zInReplyTo;     /* Forum in-reply-to artifact.  I card */
  int nFile;            /* Number of F cards */
  int nFileAlloc;       /* Slots allocated in aFile[] */
  struct { 
    char *zName;           /* Name of a file */
  int iFile;            /* Index of current file in iterator */
    char *zUuid;           /* UUID of the file */
    char *zPerm;           /* File permissions */
    char *zPrior;          /* Prior name if the name was changed */
    int iRename;           /* index of renamed name in prior/next manifest */
  } *aFile;             /* One entry for each F card */
  ManifestFile *aFile;  /* One entry for each F-card */
  int nParent;          /* Number of parents. */
  int nParentAlloc;     /* Slots allocated in azParent[] */
  char **azParent;      /* UUIDs of parents.  One for each P card argument */
  char **azParent;      /* Hashes of parents.  One for each P card argument */
  int nCherrypick;      /* Number of entries in aCherrypick[] */
  struct {
    char *zCPTarget;    /* Hash for cherry-picked version w/ +|- prefix */
    char *zCPBase;      /* Hash for cherry-pick baseline. NULL for singletons */
  } *aCherrypick;
  int nCChild;          /* Number of cluster children */
  int nCChildAlloc;     /* Number of closts allocated in azCChild[] */
  char **azCChild;      /* UUIDs of referenced objects in a cluster. M cards */
  char **azCChild;      /* Hashes of referenced objects in a cluster. M cards */
  int nTag;             /* Number of T Cards */
  int nTagAlloc;        /* Slots allocated in aTag[] */
  struct { 
  struct TagType {
    char *zName;           /* Name of the tag */
    char *zUuid;           /* UUID that the tag is applied to */
    char *zUuid;           /* Hash of artifact that the tag is applied to */
    char *zValue;          /* Value if the tag is really a property */
  } *aTag;              /* One for each T card */
  int nField;           /* Number of J cards */
  int nFieldAlloc;      /* Slots allocated in aField[] */
  struct { 
  struct {
    char *zName;           /* Key or field name */
    char *zValue;          /* Value of the field */
  } *aField;            /* One for each J card */
};
#endif

/*
** Allowed and required card types in each style of artifact
*/
static struct {
  const char *zAllowed;     /* Allowed cards.  Human-readable */
  const char *zRequired;    /* Required cards.  Human-readable */
} manifestCardTypes[] = {
  /*                           Allowed          Required    */
  /* CFTYPE_MANIFEST   1 */ { "BCDFNPQRTUZ",   "DZ"          },
                     /* Wants to be "CDUZ" ----^^^^
                     ** but we must limit for historical compatibility */
  /* CFTYPE_CLUSTER    2 */ { "MZ",            "MZ"          },
  /* CFTYPE_CONTROL    3 */ { "DTUZ",          "DTUZ"        },
  /* CFTYPE_WIKI       4 */ { "CDLNPUWZ",      "DLUWZ"       },
  /* CFTYPE_TICKET     5 */ { "DJKUZ",         "DJKUZ"       },
  /* CFTYPE_ATTACHMENT 6 */ { "ACDNUZ",        "ADZ"         },
  /* CFTYPE_EVENT      7 */ { "CDENPTUWZ",     "DEWZ"        },
  /* CFTYPE_FORUM      8 */ { "DGHINPUWZ",     "DUWZ"        },
};

/*
** Names of manifest types
*/
static const char *const azNameOfMType[] = {
  "manifest",
  "cluster",
  "tag",
  "wiki",
  "ticket",
  "attachment",
  "technote",
  "forum post"
};

/*
** A cache of parsed manifests.  This reduces the number of
** calls to manifest_parse() when doing a rebuild.
*/
#define MX_MANIFEST_CACHE 6
static struct {
  int nxAge;
  int aAge[MX_MANIFEST_CACHE];
  Manifest *apManifest[MX_MANIFEST_CACHE];
} manifestCache;

/*
** True if manifest_crosslink_begin() has been called but
** manifest_crosslink_end() is still pending.
*/
static int manifest_crosslink_busy = 0;

/*
** There are some triggers that need to fire whenever new content
** is added to the EVENT table, to make corresponding changes to the
** PENDING_ALERT and CHAT tables.  These are done with TEMP triggers
** which are created as needed.  The reasons for using TEMP triggers:
**
**    *  A small minority of invocations of Fossil need to use those triggers.
**       So we save CPU cycles in the common case by not having to parse the
**       trigger definition
**
**    *  We don't have to worry about dangling table references inside
**       of triggers.  For example, we can create a trigger that adds
**       to the CHAT table.  But an admin can still drop that CHAT table
**       at any moment, since the trigger that refers to CHAT is a TEMP
**       trigger and won't persist to cause problems.
**
**    *  Because TEMP triggers are defined by the specific version of the
**       application that is running, we don't have to worry with legacy
**       compatibility of the triggers.
**
** This boolean variable is set when the TEMP triggers for EVENT
** have been created.
*/
static int manifest_event_triggers_are_enabled = 0;

/*
** Clear the memory allocated in a manifest object
*/
void manifest_clear(Manifest *p){
  blob_reset(&p->content);
  free(p->aFile);
  free(p->azParent);
  free(p->azCChild);
  free(p->aTag);
  free(p->aField);
  memset(p, 0, sizeof(*p));
void manifest_destroy(Manifest *p){
  if( p ){
    blob_reset(&p->content);
    fossil_free(p->aFile);
    fossil_free(p->azParent);
    fossil_free(p->azCChild);
    fossil_free(p->aTag);
    fossil_free(p->aField);
    fossil_free(p->aCherrypick);
    if( p->pBaseline ) manifest_destroy(p->pBaseline);
    memset(p, 0, sizeof(*p));
    fossil_free(p);
  }
}

/*
** Given a string of upper-case letters, compute a mask of the letters
** present.  For example,  "ABC" computes 0x0007.  "DE" gives 0x0018".
*/
static unsigned int manifest_card_mask(const char *z){
  unsigned int m = 0;
  char c;
  while( (c = *(z++))>='A' && c<='Z' ){
    m |= 1 << (c - 'A');
  }
  return m;
}

/*
** Given an integer mask representing letters A-Z, return the
** letter which is the first bit set in the mask.  Example:
** 0x03520 gives 'F' since the F-bit is the lowest.
*/
static char maskToType(unsigned int x){
  char c = 'A';
  if( x==0 ) return '?';
  while( (x&1)==0 ){ x >>= 1; c++; }
  return c;
}

/*
** Add an element to the manifest cache using LRU replacement.
*/
void manifest_cache_insert(Manifest *p){
  while( p ){
    int i;
    Manifest *pBaseline = p->pBaseline;
    p->pBaseline = 0;
    for(i=0; i<MX_MANIFEST_CACHE; i++){
      if( manifestCache.apManifest[i]==0 ) break;
    }
    if( i>=MX_MANIFEST_CACHE ){
      int oldest = 0;
      int oldestAge = manifestCache.aAge[0];
      for(i=1; i<MX_MANIFEST_CACHE; i++){
        if( manifestCache.aAge[i]<oldestAge ){
          oldest = i;
          oldestAge = manifestCache.aAge[i];
        }
      }
      manifest_destroy(manifestCache.apManifest[oldest]);
      i = oldest;
    }
    manifestCache.aAge[i] = ++manifestCache.nxAge;
    manifestCache.apManifest[i] = p;
    p = pBaseline;
  }
}

/*
** Try to extract a line from the manifest cache. Return 1 if found.
** Return 0 if not found.
*/
static Manifest *manifest_cache_find(int rid){
  int i;
  Manifest *p;
  for(i=0; i<MX_MANIFEST_CACHE; i++){
    if( manifestCache.apManifest[i] && manifestCache.apManifest[i]->rid==rid ){
      p = manifestCache.apManifest[i];
      manifestCache.apManifest[i] = 0;
      return p;
    }
  }
  return 0;
}

/*
** Clear the manifest cache.
*/
void manifest_cache_clear(void){
  int i;
  for(i=0; i<MX_MANIFEST_CACHE; i++){
    if( manifestCache.apManifest[i] ){
      manifest_destroy(manifestCache.apManifest[i]);
    }
  }
  memset(&manifestCache, 0, sizeof(manifestCache));
}

#ifdef FOSSIL_DONT_VERIFY_MANIFEST_MD5SUM
# define md5sum_init(X)
# define md5sum_step_text(X,Y)
#endif

/*
** Return true if z points to the first character after a blank line.
** Tolerate either \r\n or \n line endings.
*/
static int after_blank_line(const char *z){
  if( z[-1]!='\n' ) return 0;
  if( z[-2]=='\n' ) return 1;
  if( z[-2]=='\r' && z[-3]=='\n' ) return 1;
  return 0;
}

/*
** Remove the PGP signature from the artifact, if there is one.
*/
static void remove_pgp_signature(const char **pz, int *pn){
  const char *z = *pz;
  int n = *pn;
  int i;
  if( strncmp(z, "-----BEGIN PGP SIGNED MESSAGE-----", 34)!=0 ) return;
  for(i=34; i<n && !after_blank_line(z+i); i++){}
  if( i>=n ) return;
  z += i;
  n -= i;
  *pz = z;
  for(i=n-1; i>=0; i--){
    if( z[i]=='\n' && strncmp(&z[i],"\n-----BEGIN PGP SIGNATURE-", 25)==0 ){
      n = i+1;
      break;
    }
  }
  *pn = n;
  return;
}

/*
** Verify the Z-card checksum on the artifact, if there is such a
** checksum.  Return 0 if there is no Z-card.  Return 1 if the Z-card
** exists and is correct.  Return 2 if the Z-card exists and has the wrong
** value.
**
**   0123456789 123456789 123456789 123456789
**   Z aea84f4f863865a8d59d0384e4d2a41c
*/
static int verify_z_card(const char *z, int n, Blob *pErr){
  const char *zHash;
  if( n<35 ) return 0;
  if( z[n-35]!='Z' || z[n-34]!=' ' ) return 0;
  md5sum_init();
  md5sum_step_text(z, n-35);
  zHash = md5sum_finish(0);
  if( memcmp(&z[n-33], zHash, 32)==0 ){
    return 1;
  }else{
    if(pErr!=0){
      blob_appendf(pErr, "incorrect Z-card cksum: expected %.32s", zHash);
    }
    return 2;
  }
}

/*
** A structure used for rapid parsing of the Manifest file
*/
typedef struct ManifestText ManifestText;
struct ManifestText {
  char *z;           /* The first character of the next token */
  char *zEnd;        /* One character beyond the end of the manifest */
  int atEol;         /* True if z points to the start of a new line */
};

/*
** Return a pointer to the next token.  The token is zero-terminated.
** Return NULL if there are no more tokens on the current line.
*/
static char *next_token(ManifestText *p, int *pLen){
  char *zStart;
  int n;
  if( p->atEol ) return 0;
  zStart = p->z;
  n = strcspn(p->z, " \n");
  p->atEol = p->z[n]=='\n';
  p->z[n] = 0;
  p->z += n+1;
  if( pLen ) *pLen = n;
  return zStart;
}

/*
** Return the card-type for the next card.  Or, return 0 if there are no
** more cards or if we are not at the end of the current card.
*/
static char next_card(ManifestText *p){
  char c;
  if( !p->atEol || p->z>=p->zEnd ) return 0;
  c = p->z[0];
  if( p->z[1]==' ' ){
    p->z += 2;
    p->atEol = 0;
  }else if( p->z[1]=='\n' ){
    p->z += 2;
    p->atEol = 1;
  }else{
    c = 0;
  }
  return c;
}

/*
** Shorthand for a control-artifact parsing error
*/
#define SYNTAX(T)  {zErr=(T); goto manifest_syntax_error;}

/*
** A cache of manifest IDs which manifest_parse() has seen in this
** session.
*/
static Bag seenManifests =  Bag_INIT;
/*
** Frees all memory owned by the manifest "has-seen" cache.  Intended
** to be called only from the app's atexit() handler.
*/
void manifest_clear_cache(){
  bag_clear(&seenManifests);
}

/*
** Parse a blob into a Manifest object.  The Manifest object
** takes over the input blob and will free it when the
** Manifest object is freed.  Zeros are inserted into the blob
** as string terminators so that blob should not be used again.
**
** Return a pointer to an allocated Manifest object if the content
** Return TRUE if the content really is a control file of some
** kind.  Return FALSE if there are syntax errors.
** really is a structural artifact of some kind.  The returned Manifest
** object needs to be freed by a subsequent call to manifest_destroy().
** Return NULL if there are syntax errors or if the input blob does
** not describe a valid structural artifact.
**
** This routine is strict about the format of a control file.
** This routine is strict about the format of a structural artifacts.
** The format must match exactly or else it is rejected.  This
** rule minimizes the risk that a content file will be mistaken
** for a control file simply because they look the same.
** rule minimizes the risk that a content artifact will be mistaken
** for a structural artifact simply because they look the same.
**
** The pContent is reset.  If TRUE is returned, then pContent will
** be reset when the Manifest object is cleared.  If FALSE is
** The pContent is reset.  If a pointer is returned, then pContent will
** be reset when the Manifest object is cleared.  If NULL is
** returned then the Manifest object is cleared automatically
** and pContent is reset before the return.
**
** The entire file can be PGP clear-signed.  The signature is ignored.
** The file consists of zero or more cards, one card per line.
** The entire input blob can be PGP clear-signed.  The signature is ignored.
** The artifact consists of zero or more cards, one card per line.
** (Except: the content of the W card can extend of multiple lines.)
** Each card is divided into tokens by a single space character.
** The first token is a single upper-case letter which is the card type.
** The card type determines the other parameters to the card.
** Cards must occur in lexicographical order.
*/
int manifest_parse(Manifest *p, Blob *pContent){
Manifest *manifest_parse(Blob *pContent, int rid, Blob *pErr){
  int seenHeader = 0;
  int seenZ = 0;
  Manifest *p;
  int i, lineNo=0;
  Blob line, token, a1, a2, a3, a4;
  ManifestText x;
  char cPrevType = 0;
  char cType;
  char *z;
  int n;
  char *zUuid;
  int sz = 0;
  int isRepeat;
  int nSelfTag = 0;     /* Number of T cards referring to this manifest */
  int nSimpleTag = 0;   /* Number of T cards with "+" prefix */
  const char *zErr = 0;
  unsigned int m;
  unsigned int seenCard = 0;   /* Which card types have been seen */
  char zErrBuf[100];           /* Write error messages here */

  if( rid==0 ){
    isRepeat = 1;
  }else if( bag_find(&seenManifests, rid) ){
    isRepeat = 1;
  }else{
    isRepeat = 0;
    bag_insert(&seenManifests, rid);
  }

  /* Every structural artifact ends with a '\n' character.  Exit early
  ** if that is not the case for this artifact.
  */
  if( !isRepeat ) g.parseCnt[0]++;
  z = blob_materialize(pContent);
  n = blob_size(pContent);
  if( n<=0 || z[n-1]!='\n' ){
    blob_reset(pContent);
    if(pErr!=0){
      blob_appendf(pErr, "%s", n ? "not terminated with \\n" : "zero-length");
    }
    return 0;
  }

  /* Strip off the PGP signature if there is one.
  */
  remove_pgp_signature((const char**)&z, &n);

  /* Verify that the first few characters of the artifact look like
  ** a control artifact.
  */
  if( n<10 || z[0]<'A' || z[0]>'Z' || z[1]!=' ' ){
    blob_reset(pContent);
    if(pErr!=0){
      blob_appendf(pErr, "line 1 not recognized");
    }
    return 0;
  }
  /* Then verify the Z-card.
  */
#if 1
  /* Disable this ***ONLY*** (ONLY!) when testing hand-written inputs
     for card-related syntax errors. */
  if( verify_z_card(z, n, pErr)==2 ){
    blob_reset(pContent);
    return 0;
  }
#else
#warning ACHTUNG - z-card check is disabled for testing purposes.
  if(0 && verify_z_card(NULL, 0, NULL)){
    /*avoid unused static func error*/
  }
#endif

  /* Allocate a Manifest object to hold the parsed control artifact.
  */
  p = fossil_malloc( sizeof(*p) );
  memset(p, 0, sizeof(*p));
  memcpy(&p->content, pContent, sizeof(p->content));
  p->rid = rid;
  blob_zero(pContent);
  pContent = &p->content;

  blob_zero(&a1);
  /* Begin parsing, card by card.
  blob_zero(&a2);
  blob_zero(&a3);
  md5sum_init();
  while( blob_line(pContent, &line) ){
  */
  x.z = z;
  x.zEnd = &z[n];
  x.atEol = 1;
  while( (cType = next_card(&x))!=0 ){
    char *z = blob_buffer(&line);
    lineNo++;
    if( z[0]=='-' ){
      if( strncmp(z, "-----BEGIN PGP ", 15)!=0 ){
        goto manifest_syntax_error;
    if( cType<cPrevType ){
      /* Cards must be in increasing order.  However, out-of-order detection
      ** was broken prior to 2021-02-10 due to a bug.  Furthermore, there
      ** was a bug in technote generation (prior to 2021-02-10) that caused
      ** the P card to occur before the N card.  Hence, for historical
      ** compatibility, we do allow the N card of a technote to occur after
      ** the P card.  See tickets 15d04de574383d61 and 5e67a7f4041a36ad.
      */
      if( cType!='N' || cPrevType!='P' || p->zEventId==0 ){
        SYNTAX("cards not in lexicographical order");
      }
      if( seenHeader ){
        break;
      }
    }
      while( blob_line(pContent, &line)>2 ){}
      if( blob_line(pContent, &line)==0 ) break;
      z = blob_buffer(&line);
    lineNo++;
    }
    if( z[0]<cPrevType ){
    if( cType<'A' || cType>'Z' ) SYNTAX("bad card type");
    seenCard |= 1 << (cType-'A');
      /* Lines of a manifest must occur in lexicographical order */
      goto manifest_syntax_error;
    }
    cPrevType = z[0];
    cPrevType = cType;
    seenHeader = 1;
    if( blob_token(&line, &token)!=1 ) goto manifest_syntax_error;
    switch( z[0] ){
    switch( cType ){
      /*
      **     A <filename> <target> ?<source>?
      **
      ** Identifies an attachment to either a wiki page or a ticket.
      ** <source> is the artifact that is the attachment.  <source>
      ** is omitted to delete an attachment.  <target> is the name of
      ** a wiki page or ticket to which that attachment is connected.
      */
      case 'A': {
        char *zName, *zTarget, *zSrc;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)==0 ) goto manifest_syntax_error;
        int nTarget = 0, nSrc = 0;
        zName = next_token(&x, 0);
        zTarget = next_token(&x, &nTarget);
        zSrc = next_token(&x, &nSrc);
        if( zName==0 || zTarget==0 ) goto manifest_syntax_error;
        if( p->zAttachName!=0 ) goto manifest_syntax_error;
        zName = blob_terminate(&a1);
        zTarget = blob_terminate(&a2);
        blob_token(&line, &a3);
        zSrc = blob_terminate(&a3);
        defossilize(zName);
        if( !file_is_simple_pathname(zName) ){
        if( !file_is_simple_pathname_nonstrict(zName) ){
          goto manifest_syntax_error;
          SYNTAX("invalid filename on A-card");
        }
        defossilize(zTarget);
        if( (blob_size(&a2)!=UUID_SIZE || !validate16(zTarget, UUID_SIZE))
        if( !hname_validate(zTarget,nTarget)
           && !wiki_name_is_wellformed((const unsigned char *)zTarget) ){
          goto manifest_syntax_error;
          SYNTAX("invalid target on A-card");
        }
        if( blob_size(&a3)>0
         && (blob_size(&a3)!=UUID_SIZE || !validate16(zSrc, UUID_SIZE)) ){
        if( zSrc && !hname_validate(zSrc,nSrc) ){
          SYNTAX("invalid source on A-card");
          goto manifest_syntax_error;
        }
        p->zAttachName = (char*)file_tail(zName);
        p->zAttachSrc = zSrc;
        p->zAttachTarget = zTarget;
        p->type = CFTYPE_ATTACHMENT;
        break;
      }

      /*
      **    B <uuid>
      **
      ** A B-line gives the artifact hash for the baseline of a delta-manifest.
      */
      case 'B': {
        if( p->zBaseline ) SYNTAX("more than one B-card");
        p->zBaseline = next_token(&x, &sz);
        if( p->zBaseline==0 ) SYNTAX("missing hash on B-card");
        if( !hname_validate(p->zBaseline,sz) ){
          SYNTAX("invalid hash on B-card");
        }
        p->type = CFTYPE_MANIFEST;
        break;
      }


      /*
      **     C <comment>
      **
      ** Comment text is fossil-encoded.  There may be no more than
      ** one C line.  C lines are required for manifests and are
      ** disallowed on all other control files.
      ** one C line.  C lines are required for manifests, are optional
      ** for Events and Attachments, and are disallowed on all other
      ** control files.
      */
      case 'C': {
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( p->zComment!=0 ) goto manifest_syntax_error;
        if( p->zComment!=0 ) SYNTAX("more than one C-card");
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        p->zComment = blob_terminate(&a1);
        p->zComment = next_token(&x, 0);
        if( p->zComment==0 ) SYNTAX("missing comment text on C-card");
        defossilize(p->zComment);
        break;
      }

      /*
      **     D <timestamp>
      **
      ** The timestamp should be ISO 8601.   YYYY-MM-DDtHH:MM:SS
      ** There can be no more than 1 D line.  D lines are required
      ** for all control files except for clusters.
      */
      case 'D': {
        char *zDate;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( p->rDate!=0.0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        zDate = blob_terminate(&a1);
        p->rDate = db_double(0.0, "SELECT julianday(%Q)", zDate);
        if( p->rDate>0.0 ) SYNTAX("more than one D-card");
        p->rDate = db_double(0.0, "SELECT julianday(%Q)", next_token(&x,0));
        if( p->rDate<=0.0 ) SYNTAX("cannot parse date on D-card");
        break;
      }

      /*
      **     E <timestamp> <uuid>
      **
      ** An "event" card that contains the timestamp of the event in the
      ** format YYYY-MM-DDtHH:MM:SS and a unique identifier for the event.
      ** The event timestamp is distinct from the D timestamp.  The D
      ** timestamp is when the artifact was created whereas the E timestamp
      ** is when the specific event is said to occur.
      */
      case 'E': {
        if( p->rEventDate>0.0 ) SYNTAX("more than one E-card");
        p->rEventDate = db_double(0.0,"SELECT julianday(%Q)", next_token(&x,0));
        if( p->rEventDate<=0.0 ) SYNTAX("malformed date on E-card");
        p->zEventId = next_token(&x, &sz);
        if( p->zEventId==0 ) SYNTAX("missing hash on E-card");
        if( !hname_validate(p->zEventId, sz) ){
          SYNTAX("malformed hash on E-card");
        }
        p->type = CFTYPE_EVENT;
        break;
      }

      /*
      **     F <filename> <uuid> ?<permissions>? ?<old-name>?
      **     F <filename> ?<uuid>? ?<permissions>? ?<old-name>?
      **
      ** Identifies a file in a manifest.  Multiple F lines are
      ** allowed in a manifest.  F lines are not allowed in any
      ** other control file.  The filename and old-name are fossil-encoded.
      */
      case 'F': {
        char *zName, *zUuid, *zPerm, *zPriorName;
        char *zName, *zPerm, *zPriorName;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)==0 ) goto manifest_syntax_error;
        zName = blob_terminate(&a1);
        zUuid = blob_terminate(&a2);
        blob_token(&line, &a3);
        zName = next_token(&x,0);
        zPerm = blob_terminate(&a3);
        if( blob_size(&a2)!=UUID_SIZE ) goto manifest_syntax_error;
        if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
        if( zName==0 ) SYNTAX("missing filename on F-card");
        defossilize(zName);
        if( !file_is_simple_pathname(zName) ){
        if( !file_is_simple_pathname_nonstrict(zName) ){
          goto manifest_syntax_error;
          SYNTAX("F-card filename is not a simple path");
        }
        zUuid = next_token(&x, &sz);
        if( p->zBaseline==0 || zUuid!=0 ){
          if( zUuid==0 ) SYNTAX("missing hash on F-card");
          if( !hname_validate(zUuid,sz) ){
            SYNTAX("F-card hash invalid");
          }
        }
        blob_token(&line, &a4);
        zPriorName = blob_terminate(&a4);
        if( zPriorName[0] ){
        zPerm = next_token(&x,0);
        zPriorName = next_token(&x,0);
        if( zPriorName ){
          defossilize(zPriorName);
          if( !file_is_simple_pathname(zPriorName) ){
            goto manifest_syntax_error;
          if( !file_is_simple_pathname_nonstrict(zPriorName) ){
            SYNTAX("F-card old filename is not a simple path");
          }
        }else{
          zPriorName = 0;
        }
        if( p->nFile>=p->nFileAlloc ){
          p->nFileAlloc = p->nFileAlloc*2 + 10;
          p->aFile = fossil_realloc(p->aFile,
          p->aFile = realloc(p->aFile, p->nFileAlloc*sizeof(p->aFile[0]) );
                                    p->nFileAlloc*sizeof(p->aFile[0]) );
          if( p->aFile==0 ) fossil_panic("out of memory");
        }
        i = p->nFile++;
        if( i>0 && fossil_strcmp(p->aFile[i-1].zName, zName)>=0 ){
          SYNTAX("incorrect F-card sort order");
        }
        if( file_is_reserved_name(zName,-1) ){
          /* If reserved names leaked into historical manifests due to
          ** slack oversight by older versions of Fossil, simply ignore
          ** those files */
          p->nFile--;
          break;
        }
        p->aFile[i].zName = zName;
        p->aFile[i].zUuid = zUuid;
        p->aFile[i].zPerm = zPerm;
        p->aFile[i].zPrior = zPriorName;
        p->type = CFTYPE_MANIFEST;
        break;
      }
        p->aFile[i].iRename = -1;
        if( i>0 && strcmp(p->aFile[i-1].zName, zName)>=0 ){
          goto manifest_syntax_error;

      /*
      **    G <hash>
      **
      ** A G-card identifies the initial root forum post for the thread
      ** of which this post is a part.  Forum posts only.
      */
      case 'G': {
        if( p->zThreadRoot!=0 ) SYNTAX("more than one G-card");
        p->zThreadRoot = next_token(&x, &sz);
        if( p->zThreadRoot==0 ) SYNTAX("missing hash on G-card");
        if( !hname_validate(p->zThreadRoot,sz) ){
          SYNTAX("Invalid hash on G-card");
        }
        p->type = CFTYPE_FORUM;
        break;
      }

      /*
      **     H <threadtitle>
      **
      ** The title for a forum thread.
      */
      case 'H': {
        if( p->zThreadTitle!=0 ) SYNTAX("more than one H-card");
        p->zThreadTitle = next_token(&x,0);
        if( p->zThreadTitle==0 ) SYNTAX("missing title on H-card");
        defossilize(p->zThreadTitle);
        p->type = CFTYPE_FORUM;
        break;
      }

      /*
      **    I <hash>
      **
      ** A I-card identifies another forum post that the current forum post
      ** is in reply to.
      */
      case 'I': {
        if( p->zInReplyTo!=0 ) SYNTAX("more than one I-card");
        p->zInReplyTo = next_token(&x, &sz);
        if( p->zInReplyTo==0 ) SYNTAX("missing hash on I-card");
        if( !hname_validate(p->zInReplyTo,sz) ){
          SYNTAX("Invalid hash on I-card");
        }
        p->type = CFTYPE_FORUM;
        break;
      }

      /*
      **     J <name> ?<value>?
      **
      ** Specifies a name value pair for ticket.  If the first character
      ** of <name> is "+" then the <value> is appended to any preexisting
      ** value.  If <value> is omitted then it is understood to be an
      ** empty string.
      */
      case 'J': {
        char *zName, *zValue;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        blob_token(&line, &a2);
        zName = next_token(&x,0);
        zValue = next_token(&x,0);
        if( blob_token(&line, &a3)!=0 ) goto manifest_syntax_error;
        zName = blob_terminate(&a1);
        zValue = blob_terminate(&a2);
        if( zName==0 ) SYNTAX("name missing from J-card");
        if( zValue==0 ) zValue = "";
        defossilize(zValue);
        if( p->nField>=p->nFieldAlloc ){
          p->nFieldAlloc = p->nFieldAlloc*2 + 10;
          p->aField = realloc(p->aField,
          p->aField = fossil_realloc(p->aField,
                               p->nFieldAlloc*sizeof(p->aField[0]) );
          if( p->aField==0 ) fossil_panic("out of memory");
        }
        i = p->nField++;
        p->aField[i].zName = zName;
        p->aField[i].zValue = zValue;
        if( i>0 && strcmp(p->aField[i-1].zName, zName)>=0 ){
          goto manifest_syntax_error;
        if( i>0 && fossil_strcmp(p->aField[i-1].zName, zName)>=0 ){
          SYNTAX("incorrect J-card sort order");
        }
        p->type = CFTYPE_TICKET;
        break;
      }


      /*
      **    K <uuid>
      **
      ** A K-line gives the UUID for the ticket which this control file
      ** is amending.
      */
      case 'K': {
        char *zUuid;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        zUuid = blob_terminate(&a1);
        if( blob_size(&a1)!=UUID_SIZE ) goto manifest_syntax_error;
        if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
        if( p->zTicketUuid!=0 ) goto manifest_syntax_error;
        p->zTicketUuid = zUuid;
        if( p->zTicketUuid!=0 ) SYNTAX("more than one K-card");
        p->zTicketUuid = next_token(&x, &sz);
        if( sz!=HNAME_LEN_SHA1 ) SYNTAX("K-card UUID is the wrong size");
        if( !validate16(p->zTicketUuid, sz) ){
          SYNTAX("invalid K-card UUID");
        }
        p->type = CFTYPE_TICKET;
        break;
      }

      /*
      **     L <wikititle>
      **
      ** The wiki page title is fossil-encoded.  There may be no more than
      ** one L line.
      */
      case 'L': {
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( p->zWikiTitle!=0 ) goto manifest_syntax_error;
        if( p->zWikiTitle!=0 ) SYNTAX("more than one L-card");
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        p->zWikiTitle = blob_terminate(&a1);
        p->zWikiTitle = next_token(&x,0);
        if( p->zWikiTitle==0 ) SYNTAX("missing title on L-card");
        defossilize(p->zWikiTitle);
        if( !wiki_name_is_wellformed((const unsigned char *)p->zWikiTitle) ){
          goto manifest_syntax_error;
          SYNTAX("L-card has malformed wiki name");
        }
        p->type = CFTYPE_WIKI;
        break;
      }

      /*
      **    M <uuid>
      **    M <hash>
      **
      ** An M-line identifies another artifact by its UUID.  M-lines
      ** An M-line identifies another artifact by its hash.  M-lines
      ** occur in clusters only.
      */
      case 'M': {
        char *zUuid;
        zUuid = next_token(&x, &sz);
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        zUuid = blob_terminate(&a1);
        if( zUuid==0 ) SYNTAX("missing hash on M-card");
        if( !hname_validate(zUuid,sz) ){
        if( blob_size(&a1)!=UUID_SIZE ) goto manifest_syntax_error;
        if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
          SYNTAX("Invalid hash on M-card");
        }
        if( p->nCChild>=p->nCChildAlloc ){
          p->nCChildAlloc = p->nCChildAlloc*2 + 10;
          p->azCChild = 
             realloc(p->azCChild, p->nCChildAlloc*sizeof(p->azCChild[0]) );
          p->azCChild = fossil_realloc(p->azCChild
                                 , p->nCChildAlloc*sizeof(p->azCChild[0]) );
          if( p->azCChild==0 ) fossil_panic("out of memory");
        }
        i = p->nCChild++;
        p->azCChild[i] = zUuid;
        if( i>0 && strcmp(p->azCChild[i-1], zUuid)>=0 ){
          goto manifest_syntax_error;
        if( i>0 && fossil_strcmp(p->azCChild[i-1], zUuid)>=0 ){
          SYNTAX("M-card in the wrong order");
        }
        p->type = CFTYPE_CLUSTER;
        break;
      }

      /*
      **    N <uuid>
      **
      ** An N-line identifies the mimetype of wiki or comment text.
      */
      case 'N': {
        if( p->zMimetype!=0 ) SYNTAX("more than one N-card");
        p->zMimetype = next_token(&x,0);
        if( p->zMimetype==0 ) SYNTAX("missing mimetype on N-card");
        defossilize(p->zMimetype);
        break;
      }

      /*
      **     P <uuid> ...
      **
      ** Specify one or more other artifacts where are the parents of
      ** Specify one or more other artifacts which are the parents of
      ** this artifact.  The first parent is the primary parent.  All
      ** others are parents by merge.
      ** others are parents by merge. Note that the initial empty
      ** check-in historically has an empty P-card, so empty P-cards
      ** must be accepted.
      */
      case 'P': {
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        while( blob_token(&line, &a1) ){
          char *zUuid;
        while( (zUuid = next_token(&x, &sz))!=0 ){
          if( !hname_validate(zUuid, sz) ){
          if( blob_size(&a1)!=UUID_SIZE ) goto manifest_syntax_error;
          zUuid = blob_terminate(&a1);
             SYNTAX("invalid hash on P-card");
          if( !validate16(zUuid, UUID_SIZE) ) goto manifest_syntax_error;
          }
          if( p->nParent>=p->nParentAlloc ){
            p->nParentAlloc = p->nParentAlloc*2 + 5;
            p->azParent = fossil_realloc(p->azParent,
            p->azParent = realloc(p->azParent, p->nParentAlloc*sizeof(char*));
                               p->nParentAlloc*sizeof(char*));
            if( p->azParent==0 ) fossil_panic("out of memory");
          }
          i = p->nParent++;
          p->azParent[i] = zUuid;
        }
        break;
      }

      /*
      **     Q (+|-)<uuid> ?<uuid>?
      **
      ** Specify one or a range of check-ins that are cherrypicked into
      ** this check-in ("+") or backed out of this check-in ("-").
      */
      case 'Q': {
        if( (zUuid=next_token(&x, &sz))==0 ) SYNTAX("missing hash on Q-card");
        if( zUuid[0]!='+' && zUuid[0]!='-' ){
          SYNTAX("Q-card does not begin with '+' or '-'");
        }
        if( !hname_validate(&zUuid[1], sz-1) ){
          SYNTAX("invalid hash on Q-card");
        }
        n = p->nCherrypick;
        p->nCherrypick++;
        p->aCherrypick = fossil_realloc(p->aCherrypick,
                                 p->nCherrypick*sizeof(p->aCherrypick[0]));
        p->aCherrypick[n].zCPTarget = zUuid;
        p->aCherrypick[n].zCPBase = zUuid = next_token(&x, &sz);
        if( zUuid && !hname_validate(zUuid,sz) ){
          SYNTAX("invalid second hash on Q-card");
        }
        p->type = CFTYPE_MANIFEST;
        break;
      }

      /*
      **     R <md5sum>
      **
      ** Specify the MD5 checksum of the entire baseline in a
      ** manifest.
      ** Specify the MD5 checksum over the name and content of all files
      ** in the manifest.
      */
      case 'R': {
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( p->zRepoCksum!=0 ) goto manifest_syntax_error;
        if( p->zRepoCksum!=0 ) SYNTAX("more than one R-card");
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        if( blob_size(&a1)!=32 ) goto manifest_syntax_error;
        p->zRepoCksum = blob_terminate(&a1);
        if( !validate16(p->zRepoCksum, 32) ) goto manifest_syntax_error;
        p->zRepoCksum = next_token(&x, &sz);
        if( sz!=32 ) SYNTAX("wrong size cksum on R-card");
        if( !validate16(p->zRepoCksum, 32) ) SYNTAX("malformed R-card cksum");
        p->type = CFTYPE_MANIFEST;
        break;
      }

      /*
      **    T (+|*|-)<tagname> <uuid> ?<value>?
      **
      ** Create or cancel a tag or property.  The tagname is fossil-encoded.
      ** The first character of the name must be either "+" to create a
      ** singleton tag, "*" to create a propagating tag, or "-" to create
      ** anti-tag that undoes a prior "+" or blocks propagation of of
      ** a "*".
      **
      ** The tag is applied to <uuid>.  If <uuid> is "*" then the tag is
      ** applied to the current manifest.  If <value> is provided then 
      ** applied to the current manifest.  If <value> is provided then
      ** the tag is really a property with the given value.
      **
      ** Tags are not allowed in clusters.  Multiple T lines are allowed.
      */
      case 'T': {
        char *zName, *zUuid, *zValue;
        char *zName, *zValue;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ){
        zName = next_token(&x, 0);
          goto manifest_syntax_error;
        }
        if( blob_token(&line, &a2)==0 ){
          goto manifest_syntax_error;
        }
        zName = blob_terminate(&a1);
        zUuid = blob_terminate(&a2);
        if( blob_token(&line, &a3)==0 ){
          zValue = 0;
        if( zName==0 ) SYNTAX("missing name on T-card");
        zUuid = next_token(&x, &sz);
        if( zUuid==0 ) SYNTAX("missing artifact hash on T-card");
        zValue = next_token(&x, 0);
        }else{
          zValue = blob_terminate(&a3);
          defossilize(zValue);
        if( zValue ) defossilize(zValue);
        }
        if( blob_size(&a2)==UUID_SIZE && validate16(zUuid, UUID_SIZE) ){
          /* A valid uuid */
        }else if( blob_size(&a2)==1 && zUuid[0]=='*' ){
        if( hname_validate(zUuid, sz) ){
          /* A valid artifact hash */
        }else if( sz==1 && zUuid[0]=='*' ){
          zUuid = 0;
          nSelfTag++;
        }else{
          goto manifest_syntax_error;
          SYNTAX("malformed artifact hash on T-card");
        }
        defossilize(zName);
        if( zName[0]!='-' && zName[0]!='+' && zName[0]!='*' ){
          goto manifest_syntax_error;
          SYNTAX("T-card name does not begin with '-', '+', or '*'");
        }
        if( zName[0]=='+' ) nSimpleTag++;
        if( validate16(&zName[1], strlen(&zName[1])) ){
          /* Do not allow tags whose names look like UUIDs */
          /* Do not allow tags whose names look like a hash */
          goto manifest_syntax_error;
          SYNTAX("T-card name looks like a hexadecimal hash");
        }
        if( p->nTag>=p->nTagAlloc ){
          p->nTagAlloc = p->nTagAlloc*2 + 10;
          p->aTag = realloc(p->aTag, p->nTagAlloc*sizeof(p->aTag[0]) );
          p->aTag = fossil_realloc(p->aTag, p->nTagAlloc*sizeof(p->aTag[0]) );
          if( p->aTag==0 ) fossil_panic("out of memory");
        }
        i = p->nTag++;
        p->aTag[i].zName = zName;
        p->aTag[i].zUuid = zUuid;
        p->aTag[i].zValue = zValue;
        if( i>0 ){
        if( i>0 && strcmp(p->aTag[i-1].zName, zName)>=0 ){
          int c = fossil_strcmp(p->aTag[i-1].zName, zName);
          goto manifest_syntax_error;
          if( c>0 || (c==0 && fossil_strcmp(p->aTag[i-1].zUuid, zUuid)>=0) ){
            SYNTAX("T-card in the wrong order");
          }
        }
        break;
      }

      /*
      **     U ?<login>?
      **
      ** Identify the user who created this control file by their
      ** login.  Only one U line is allowed.  Prohibited in clusters.
      ** If the user name is omitted, take that to be "anonymous".
      */
      case 'U': {
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( p->zUser!=0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a1)==0 ){
        if( p->zUser!=0 ) SYNTAX("more than one U-card");
        p->zUser = next_token(&x, 0);
        if( p->zUser==0 || p->zUser[0]==0 ){
          p->zUser = "anonymous";
        }else{
          p->zUser = blob_terminate(&a1);
          defossilize(p->zUser);
        }
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        break;
      }

      /*
      **     W <size>
      **
      ** The next <size> bytes of the file contain the text of the wiki
      ** page.  There is always an extra \n before the start of the next
      ** record.
      */
      case 'W': {
        int size;
        char *zSize;
        unsigned size, oldsize, c;
        Blob wiki;
        md5sum_step_text(blob_buffer(&line), blob_size(&line));
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        if( !blob_is_int(&a1, &size) ) goto manifest_syntax_error;
        if( size<0 ) goto manifest_syntax_error;
        if( p->zWiki!=0 ) goto manifest_syntax_error;
        zSize = next_token(&x, 0);
        if( zSize==0 ) SYNTAX("missing size on W-card");
        if( x.atEol==0 ) SYNTAX("no content after W-card");
        for(oldsize=size=0; (c = zSize[0])>='0' && c<='9'; zSize++){
           size = oldsize*10 + c - '0';
           if( size<oldsize ) SYNTAX("size overflow on W-card");
           oldsize = size;
        }
        if( p->zWiki!=0 ) SYNTAX("more than one W-card");
        blob_zero(&wiki);
        if( blob_extract(pContent, size+1, &wiki)!=size+1 ){
        if( (&x.z[size+1])>=x.zEnd )SYNTAX("not enough content after W-card");
          goto manifest_syntax_error;
        }
        p->zWiki = blob_buffer(&wiki);
        md5sum_step_text(p->zWiki, size+1);
        if( p->zWiki[size]!='\n' ) goto manifest_syntax_error;
        p->zWiki[size] = 0;
        p->zWiki = x.z;
        x.z += size;
        if( x.z[0]!='\n' ) SYNTAX("W-card content no \\n terminated");
        x.z[0] = 0;
        x.z++;
        break;
      }


      /*
      **     Z <md5sum>
      **
      ** MD5 checksum on this control file.  The checksum is over all
      ** lines (other than PGP-signature lines) prior to the current
      ** line.  This must be the last record.
      **
      ** This card is required for all control file types except for
      ** Manifest.  It is not required for manifest only for historical
      ** compatibility reasons.
      */
      case 'Z': {
        int rc;
        Blob hash;
        if( blob_token(&line, &a1)==0 ) goto manifest_syntax_error;
        zUuid = next_token(&x, &sz);
        if( blob_token(&line, &a2)!=0 ) goto manifest_syntax_error;
        if( blob_size(&a1)!=32 ) goto manifest_syntax_error;
        if( !validate16(blob_buffer(&a1), 32) ) goto manifest_syntax_error;
        if( sz!=32 ) SYNTAX("wrong size for Z-card cksum");
        if( !validate16(zUuid, 32) ) SYNTAX("malformed Z-card cksum");
        md5sum_finish(&hash);
        rc = blob_compare(&hash, &a1);
        blob_reset(&hash);
        if( rc!=0 ) goto manifest_syntax_error;
        seenZ = 1;
        break;
      }
      default: {
        goto manifest_syntax_error;
        SYNTAX("unrecognized card");
      }
    }
  }
  if( !seenHeader ) goto manifest_syntax_error;
  if( x.z<x.zEnd ) SYNTAX("extra characters at end of card");

  if( p->nFile>0 || p->zRepoCksum!=0 ){
    if( p->nCChild>0 ) goto manifest_syntax_error;
    if( p->rDate==0.0 ) goto manifest_syntax_error;
    if( p->nField>0 ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zWiki ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zAttachName ) goto manifest_syntax_error;
    p->type = CFTYPE_MANIFEST;
  }else if( p->nCChild>0 ){
    if( p->rDate>0.0 ) goto manifest_syntax_error;
    if( p->zComment!=0 ) goto manifest_syntax_error;
  /* If the artifact type has not yet been determined, then compute
  ** it now. */
  if( p->type==0 ){
    if( p->zComment!=0 || p->nFile>0 || p->nParent>0 ){
      p->type = CFTYPE_MANIFEST;
    }else{
      p->type = CFTYPE_CONTROL;
    }
  }

  /* Verify that no disallowed cards are present for this artifact type */
  m = manifest_card_mask(manifestCardTypes[p->type-1].zAllowed);
  if( seenCard & ~m ){
    sqlite3_snprintf(sizeof(zErrBuf), zErrBuf, "%c-card in %s",
                     maskToType(seenCard & ~m),
                     azNameOfMType[p->type-1]);
    zErr = zErrBuf;
    goto manifest_syntax_error;
  }

    if( p->zUser!=0 ) goto manifest_syntax_error;
    if( p->nTag>0 ) goto manifest_syntax_error;
    if( p->nParent>0 ) goto manifest_syntax_error;
    if( p->nField>0 ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zWiki ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->zAttachName ) goto manifest_syntax_error;
    if( !seenZ ) goto manifest_syntax_error;
    p->type = CFTYPE_CLUSTER;
  }else if( p->nField>0 ){
  /* Verify that all required cards are present for this artifact type */
  m = manifest_card_mask(manifestCardTypes[p->type-1].zRequired);
  if( ~seenCard & m ){
    sqlite3_snprintf(sizeof(zErrBuf), zErrBuf, "%c-card missing in %s",
                     maskToType(~seenCard & m),
                     azNameOfMType[p->type-1]);
    zErr = zErrBuf;
    goto manifest_syntax_error;
  }

  /* Additional checks based on artifact type */
  switch( p->type ){
    case CFTYPE_CONTROL: {
    if( p->rDate==0.0 ) goto manifest_syntax_error;
    if( p->zWiki ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->nCChild>0 ) goto manifest_syntax_error;
    if( p->nTag>0 ) goto manifest_syntax_error;
      if( nSelfTag ) SYNTAX("self-referential T-card in control artifact");
      break;
    if( p->zTicketUuid==0 ) goto manifest_syntax_error;
    if( p->zUser==0 ) goto manifest_syntax_error;
    if( p->zAttachName ) goto manifest_syntax_error;
    if( !seenZ ) goto manifest_syntax_error;
    p->type = CFTYPE_TICKET;
  }else if( p->zWiki!=0 ){
    if( p->rDate==0.0 ) goto manifest_syntax_error;
    }
    case CFTYPE_EVENT: {
      if( p->nTag!=nSelfTag ){
        SYNTAX("non-self-referential T-card in technote");
    if( p->nCChild>0 ) goto manifest_syntax_error;
    if( p->nTag>0 ) goto manifest_syntax_error;
    if( p->zTicketUuid!=0 ) goto manifest_syntax_error;
      }
      if( p->nTag!=nSimpleTag ){
        SYNTAX("T-card with '*' or '-' in technote");
    if( p->zWikiTitle==0 ) goto manifest_syntax_error;
    if( p->zAttachName ) goto manifest_syntax_error;
      }
      break;
    if( !seenZ ) goto manifest_syntax_error;
    p->type = CFTYPE_WIKI;
  }else if( p->nTag>0 ){
    if( p->rDate<=0.0 ) goto manifest_syntax_error;
    if( p->nParent>0 ) goto manifest_syntax_error;
    }
    case CFTYPE_FORUM: {
      if( p->zThreadTitle && p->zInReplyTo ){
        SYNTAX("cannot have I-card and H-card in a forum post");
      }
      if( p->nParent>1 ) SYNTAX("too many arguments to P-card");
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zAttachName ) goto manifest_syntax_error;
      break;
    }
  }

    if( !seenZ ) goto manifest_syntax_error;
    p->type = CFTYPE_CONTROL;
  }else if( p->zAttachName ){
    if( p->nCChild>0 ) goto manifest_syntax_error;
    if( p->rDate==0.0 ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( !seenZ ) goto manifest_syntax_error;
  md5sum_init();
  if( !isRepeat ) g.parseCnt[p->type]++;
  return p;

manifest_syntax_error:
  {
    char *zUuid = rid_to_uuid(rid);
    if( zUuid ){
      if(pErr!=0){
        blob_appendf(pErr, "artifact [%s] ", zUuid);
      }
      fossil_free(zUuid);
    }
  }
  if(pErr!=0){
    if( zErr ){
    p->type = CFTYPE_ATTACHMENT;
  }else{
      blob_appendf(pErr, "line %d: %s", lineNo, zErr);
    }else{
    if( p->nCChild>0 ) goto manifest_syntax_error;
    if( p->rDate<=0.0 ) goto manifest_syntax_error;
    if( p->nParent>0 ) goto manifest_syntax_error;
    if( p->nField>0 ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zWiki ) goto manifest_syntax_error;
    if( p->zWikiTitle ) goto manifest_syntax_error;
    if( p->zTicketUuid ) goto manifest_syntax_error;
    if( p->zAttachName ) goto manifest_syntax_error;
      blob_appendf(pErr, "unknown error on line %d", lineNo);
    }
  }
  md5sum_init();
  manifest_destroy(p);
    p->type = CFTYPE_MANIFEST;
  }
  md5sum_init();
  return 1;

manifest_syntax_error:
  /*fprintf(stderr, "Manifest error on line %i\n", lineNo);fflush(stderr);*/
  md5sum_init();
  manifest_clear(p);
  return 0;
  return 0;
}

/*
** Get a manifest given the rid for the control artifact.  Return
** a pointer to the manifest on success or NULL if there is a failure.
*/
Manifest *manifest_get(int rid, int cfType, Blob *pErr){
  Blob content;
  Manifest *p;
  if( !rid ) return 0;
  p = manifest_cache_find(rid);
  if( p ){
    if( cfType!=CFTYPE_ANY && cfType!=p->type ){
      manifest_cache_insert(p);
      p = 0;
    }
    return p;
  }
  content_get(rid, &content);
  p = manifest_parse(&content, rid, pErr);
  if( p && cfType!=CFTYPE_ANY && cfType!=p->type ){
    manifest_destroy(p);
    p = 0;
  }
  return p;
}

/*
** Given a check-in name, load and parse the manifest for that check-in.
** Throw a fatal error if anything goes wrong.
*/
Manifest *manifest_get_by_name(const char *zName, int *pRid){
  int rid;
  Manifest *p;

  rid = name_to_typed_rid(zName, "ci");
  if( !is_a_version(rid) ){
    fossil_fatal("no such check-in: %s", zName);
  }
  if( pRid ) *pRid = rid;
  p = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( p==0 ){
    fossil_fatal("cannot parse manifest for check-in: %s", zName);
  }
  return p;
}

/*
** The input blob is text that may or may not be a valid Fossil
** control artifact of some kind.  This routine returns true if
** the input is a well-formed control artifact and false if it
** is not.
**
** This routine is optimized to return false quickly and with minimal
** work in the common case where the input is some random file.
*/
int manifest_is_well_formed(const char *zIn, int nIn){
  int i;
  int iRes;
  Manifest *pManifest;
  Blob copy, errmsg;
  remove_pgp_signature(&zIn, &nIn);

  /* Check to see that the file begins with a "card" */
  if( nIn<3 ) return 0;
  if( zIn[0]<'A' || zIn[0]>'M' || zIn[1]!=' ' ) return 0;

  /* Check to see that the first card is followed by one more card */
  for(i=2; i<nIn && zIn[i]!='\n'; i++){}
  if( i>=nIn-3 ) return 0;
  i++;
  if( !fossil_isupper(zIn[i]) || zIn[i]<zIn[0] || zIn[i+1]!=' ' ) return 0;

  /* The checks above will eliminate most random inputs.  If these
  ** quick checks pass, then we could be dealing with a well-formed
  ** control artifact.  Make a copy, and run it through the official
  ** artifact parser.  This is the slow path, but it is rarely taken.
  */
  blob_init(&copy, 0, 0);
  blob_init(&errmsg, 0, 0);
  blob_append(&copy, zIn, nIn);
  pManifest = manifest_parse(&copy, 0, &errmsg);
  iRes = pManifest!=0;
  manifest_destroy(pManifest);
  blob_reset(&errmsg);
  return iRes;
}

/*
** COMMAND: test-parse-manifest
**
** Usage: %fossil test-parse-manifest FILENAME
** Usage: %fossil test-parse-manifest FILENAME ?N?
**
** Parse the manifest and discarded.  Use for testing only.
** Parse the manifest(s) given on the command-line and report any
** errors.  If the N argument is given, run the parsing N times.
*/
void manifest_test_parse_cmd(void){
  Manifest m;
  Manifest *p;
  Blob b;
  int i;
  int n = 1;
  int isWF;
  db_find_and_open_repository(OPEN_SUBSTITUTE|OPEN_OK_NOT_FOUND,0);
  verify_all_options();
  if( g.argc!=3 ){
  if( g.argc!=3 && g.argc!=4 ){
    usage("FILENAME");
  }
  db_must_be_within_tree();
  blob_read_from_file(&b, g.argv[2]);
  manifest_parse(&m, &b);
  manifest_clear(&m);
  blob_read_from_file(&b, g.argv[2], ExtFILE);
  if( g.argc>3 ) n = atoi(g.argv[3]);
  isWF = manifest_is_well_formed(blob_buffer(&b), blob_size(&b));
  fossil_print("manifest_is_well_formed() reports the input %s\n",
       isWF ? "is ok" : "contains errors");
  for(i=0; i<n; i++){
    Blob b2;
    Blob err;
    blob_copy(&b2, &b);
    blob_zero(&err);
    p = manifest_parse(&b2, 0, &err);
    if( p==0 ){
      fossil_print("ERROR: %s\n", blob_str(&err));
    }else if( i==0 || (n==2 && i==1) ){
      fossil_print("manifest_parse() worked\n");
    }else if( i==n-1 ){
      fossil_print("manifest_parse() worked %d more times\n", n-1);
    }
    if( (p==0 && isWF) || (p!=0 && !isWF) ){
      fossil_print("ERROR: manifest_is_well_formed() and "
                   "manifest_parse() disagree!\n");
    }
    blob_reset(&err);
    manifest_destroy(p);
  }
  blob_reset(&b);
}

/*
** COMMAND: test-parse-all-blobs
**
** Usage: %fossil test-parse-all-blobs ?OPTIONS?
**
** Parse all entries in the BLOB table that are believed to be non-data
** artifacts and report any errors.  Run this test command on historical
** repositories after making any changes to the manifest_parse()
** implementation to confirm that the changes did not break anything.
**
** Options:
**   --limit N            Parse no more than N artifacts before stopping
**   --wellformed         Use all BLOB table entries as input, not just
**                        those entries that are believed to be valid
**                        artifacts, and verify that the result the
**                        manifest_is_well_formed() agrees with the
**                        result of manifest_parse().
*/
void manifest_test_parse_all_blobs_cmd(void){
  Manifest *p;
  Blob err;
  Stmt q;
  int nTest = 0;
  int nErr = 0;
  int N = 1000000000;
  int bWellFormed;
  const char *z;
  db_find_and_open_repository(0, 0);
  z = find_option("limit", 0, 1);
  if( z ) N = atoi(z);
  bWellFormed = find_option("wellformed",0,0)!=0;
  verify_all_options();
  if( bWellFormed ){
    db_prepare(&q, "SELECT rid FROM blob ORDER BY rid");
  }else{
    db_prepare(&q, "SELECT DISTINCT objid FROM EVENT ORDER BY objid");
  }
  while( (N--)>0 && db_step(&q)==SQLITE_ROW ){
    int id = db_column_int(&q,0);
    fossil_print("Checking %d       \r", id);
    nTest++;
    fflush(stdout);
    blob_init(&err, 0, 0);
    if( bWellFormed ){
      Blob content;
      int isWF;
      content_get(id, &content);
      isWF = manifest_is_well_formed(blob_buffer(&content),blob_size(&content));
      p = manifest_parse(&content, id, &err);
      if( isWF && p==0 ){
        fossil_print("%d ERROR: manifest_is_well_formed() reported true "
                     "but manifest_parse() reports an error: %s\n",
                     id, blob_str(&err));
        nErr++;
      }else if( !isWF && p!=0 ){
        fossil_print("%d ERROR: manifest_is_well_formed() reported false "
                     "but manifest_parse() found nothing wrong.\n", id);
        nErr++;
      }
    }else{
      p = manifest_get(id, CFTYPE_ANY, &err);
      if( p==0 ){
        fossil_print("%d ERROR: %s\n", id, blob_str(&err));
        nErr++;
      }
    }
    blob_reset(&err);
    manifest_destroy(p);
  }
  db_finalize(&q);
  fossil_print("%d tests with %d errors\n", nTest, nErr);
}

/*
** Fetch the baseline associated with the delta-manifest p.
** Return 0 on success.  If unable to parse the baseline,
** throw an error.  If the baseline is a manifest, throw an
** error if throwError is true, or record that p is an orphan
** and return 1 if throwError is false.
*/
static int fetch_baseline(Manifest *p, int throwError){
  if( p->zBaseline!=0 && p->pBaseline==0 ){
    int rid = uuid_to_rid(p->zBaseline, 1);
    p->pBaseline = manifest_get(rid, CFTYPE_MANIFEST, 0);
    if( p->pBaseline==0 ){
      if( !throwError ){
        db_multi_exec(
           "INSERT OR IGNORE INTO orphan(rid, baseline) VALUES(%d,%d)",
           p->rid, rid
        );
        return 1;
      }
      fossil_fatal("cannot access baseline manifest %S", p->zBaseline);
    }
  }
  return 0;
}

/*
** Rewind a manifest-file iterator back to the beginning of the manifest.
*/
void manifest_file_rewind(Manifest *p){
  p->iFile = 0;
  fetch_baseline(p, 1);
  if( p->pBaseline ){
    p->pBaseline->iFile = 0;
  }
}

/*
** Advance to the next manifest-file.
**
** Return NULL for end-of-records or if there is an error.  If an error
** occurs and pErr!=0 then store 1 in *pErr.
*/
ManifestFile *manifest_file_next(
  Manifest *p,
  int *pErr
){
  ManifestFile *pOut = 0;
  if( pErr ) *pErr = 0;
  if( p->pBaseline==0 ){
    /* Manifest p is a baseline-manifest.  Just scan down the list
    ** of files. */
    if( p->iFile<p->nFile ) pOut = &p->aFile[p->iFile++];
  }else{
    /* Manifest p is a delta-manifest.  Scan the baseline but amend the
    ** file list in the baseline with changes described by p.
    */
    Manifest *pB = p->pBaseline;
    int cmp;
    while(1){
      if( pB->iFile>=pB->nFile ){
        /* We have used all entries out of the baseline.  Return the next
        ** entry from the delta. */
        if( p->iFile<p->nFile ) pOut = &p->aFile[p->iFile++];
        break;
      }else if( p->iFile>=p->nFile ){
        /* We have used all entries from the delta.  Return the next
        ** entry from the baseline. */
        if( pB->iFile<pB->nFile ) pOut = &pB->aFile[pB->iFile++];
        break;
      }else if( (cmp = fossil_strcmp(pB->aFile[pB->iFile].zName,
                              p->aFile[p->iFile].zName)) < 0 ){
        /* The next baseline entry comes before the next delta entry.
        ** So return the baseline entry. */
        pOut = &pB->aFile[pB->iFile++];
        break;
      }else if( cmp>0 ){
        /* The next delta entry comes before the next baseline
        ** entry so return the delta entry */
        pOut = &p->aFile[p->iFile++];
        break;
      }else if( p->aFile[p->iFile].zUuid ){
        /* The next delta entry is a replacement for the next baseline
        ** entry.  Skip the baseline entry and return the delta entry */
        pB->iFile++;
        pOut = &p->aFile[p->iFile++];
        break;
      }else{
        /* The next delta entry is a delete of the next baseline
        ** entry.  Skip them both.  Repeat the loop to find the next
        ** non-delete entry. */
        pB->iFile++;
        p->iFile++;
        continue;
      }
    }
  }
  return pOut;
}

/*
** Translate a filename into a filename-id (fnid).  Create a new fnid
** if no previously exists.
*/
static int filename_to_fnid(const char *zFilename){
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    db_static_prepare(&s1, "INSERT INTO filename(name) VALUES(:fn)");
    db_bind_text(&s1, ":fn", zFilename);
    db_exec(&s1);
    fnid = db_last_insert_rowid();
  }
  return fnid;
}

/*
** Compute an appropriate mlink.mperm integer for the permission string
** of a file.
*/
int manifest_file_mperm(const ManifestFile *pFile){
  int mperm = PERM_REG;
  if( pFile && pFile->zPerm){
    if( strstr(pFile->zPerm,"x")!=0 ){
      mperm = PERM_EXE;
    }else if( strstr(pFile->zPerm,"l")!=0 ){
      mperm = PERM_LNK;
    }
  }
  return mperm;
}

/*
** Add a single entry to the mlink table.  Also add the filename to
** the filename table if it is not there already.
**
** An mlink entry is always created if isPrimary is true.  But if
** isPrimary is false (meaning that pmid is a merge parent of mid)
** then the mlink entry is only created if there is already an mlink
** from primary parent for the same file.
*/
static void add_one_mlink(
  int pmid,                 /* The parent manifest */
  const char *zFromUuid,    /* Artifact hash for content in parent */
  int mid,                  /* The record ID of the manifest */
  const char *zFromUuid,    /* UUID for the mlink.pid field */
  const char *zToUuid,      /* UUID for the mlink.fid field */
  const char *zToUuid,      /* artifact hash for content in child */
  const char *zFilename,    /* Filename */
  const char *zPrior        /* Previous filename.  NULL if unchanged */
  const char *zPrior,       /* Previous filename. NULL if unchanged */
  int isPublic,             /* True if mid is not a private manifest */
  int isPrimary,            /* pmid is the primary parent of mid */
  int mperm                 /* 1: exec, 2: symlink */
){
  int fnid, pfnid, pid, fid;
  int doInsert;
  static Stmt s1;
  static Stmt s1, s2;

  fnid = filename_to_fnid(zFilename);
  if( zPrior==0 ){
    pfnid = 0;
  }else{
    pfnid = filename_to_fnid(zPrior);
  }
  if( zFromUuid==0 ){
  if( zFromUuid==0 || zFromUuid[0]==0 ){
    pid = 0;
  }else{
    pid = uuid_to_rid(zFromUuid, 1);
  }
  if( zToUuid==0 ){
  if( zToUuid==0 || zToUuid[0]==0 ){
    fid = 0;
  }else{
    fid = uuid_to_rid(zToUuid, 1);
    if( isPublic ) content_make_public(fid);
  }
  if( isPrimary ){
    doInsert = 1;
  }else{
    db_static_prepare(&s2,
      "SELECT 1 FROM mlink WHERE mid=:m AND fnid=:n AND NOT isaux"
    );
    db_bind_int(&s2, ":m", mid);
    db_bind_int(&s2, ":n", fnid);
    doInsert = db_step(&s2)==SQLITE_ROW;
    db_reset(&s2);
  }
  if( doInsert ){
  db_static_prepare(&s1,
    "INSERT INTO mlink(mid,pid,fid,fnid,pfnid)"
    "VALUES(:m,:p,:f,:n,:pfn)"
  );
  db_bind_int(&s1, ":m", mid);
  db_bind_int(&s1, ":p", pid);
  db_bind_int(&s1, ":f", fid);
  db_bind_int(&s1, ":n", fnid);
  db_bind_int(&s1, ":pfn", pfnid);
  db_exec(&s1);
    db_static_prepare(&s1,
      "INSERT INTO mlink(mid,fid,pmid,pid,fnid,pfnid,mperm,isaux)"
      "VALUES(:m,:f,:pm,:p,:n,:pfn,:mp,:isaux)"
    );
    db_bind_int(&s1, ":m", mid);
    db_bind_int(&s1, ":f", fid);
    db_bind_int(&s1, ":pm", pmid);
    db_bind_int(&s1, ":p", pid);
    db_bind_int(&s1, ":n", fnid);
    db_bind_int(&s1, ":pfn", pfnid);
    db_bind_int(&s1, ":mp", mperm);
    db_bind_int(&s1, ":isaux", isPrimary==0);
    db_exec(&s1);
  }
  if( pid && fid ){
    content_deltify(pid, fid, 0);
    content_deltify(pid, &fid, 1, 0);
  }
}

/*
** Locate a file named zName in the aFile[] array of the given
** manifest.  We assume that filenames are in sorted order.
** Use a binary search.  Return turn the index of the matching
** entry.  Or return -1 if not found.
** Do a binary search to find a file in the p->aFile[] array.
**
** As an optimization, guess that the file we seek is at index p->iFile.
** That will usually be the case.  If it is not found there, then do the
** actual binary search.
**
** Update p->iFile to be the index of the file that is found.
*/
static ManifestFile *manifest_file_seek_base(
  Manifest *p,             /* Manifest to search */
static int find_file_in_manifest(Manifest *p, const char *zName){
  const char *zName,       /* Name of the file we are looking for */
  int bBest                /* 0: exact match only.  1: closest match */
){
  int lwr, upr;
  int c;
  int i;
  if( p->aFile==0 ){
    return 0;
  }
  lwr = 0;
  upr = p->nFile - 1;
  if( p->iFile>=lwr && p->iFile<upr ){
    c = fossil_strcmp(p->aFile[p->iFile+1].zName, zName);
    if( c==0 ){
      return &p->aFile[++p->iFile];
    }else if( c>0 ){
      upr = p->iFile;
    }else{
      lwr = p->iFile+1;
    }
  }
  while( lwr<=upr ){
    i = (lwr+upr)/2;
    c = strcmp(p->aFile[i].zName, zName);
    c = fossil_strcmp(p->aFile[i].zName, zName);
    if( c<0 ){
      lwr = i+1;
    }else if( c>0 ){
      upr = i-1;
    }else{
      p->iFile = i;
      return &p->aFile[i];
    }
  }
  if( bBest ){
    if( lwr>=p->nFile ) lwr = p->nFile-1;
    i = (int)strlen(zName);
    if( strncmp(zName, p->aFile[lwr].zName, i)==0 ) return &p->aFile[lwr];
  }
      return i;
    }
  }
  return -1;
  return 0;
}

/*
** Locate a file named zName in the aFile[] array of the given manifest.
** Return a pointer to the appropriate ManifestFile object.  Return NULL
** if not found.
**
** This routine works even if p is a delta-manifest.  The pointer
** returned might be to the baseline.
**
** We assume that filenames are in sorted order and use a binary search.
*/
ManifestFile *manifest_file_seek(Manifest *p, const char *zName, int bBest){
  ManifestFile *pFile;

  pFile = manifest_file_seek_base(p, zName, p->zBaseline ? 0 : bBest);
  if( pFile && pFile->zUuid==0 ) return 0;
  if( pFile==0 && p->zBaseline ){
    fetch_baseline(p, 1);
    pFile = manifest_file_seek_base(p->pBaseline, zName,bBest);
  }
  return pFile;
}

/*
** Look for a file in a manifest, taking the case-sensitive option
** into account.  If case-sensitive is off, then files in any case
** will match.
*/
ManifestFile *manifest_file_find(Manifest *p, const char *zName){
  int i;
  Manifest *pBase;
  if( filenames_are_case_sensitive() ){
    return manifest_file_seek(p, zName, 0);
  }
  for(i=0; i<p->nFile; i++){
    if( fossil_stricmp(zName, p->aFile[i].zName)==0 ){
      return &p->aFile[i];
    }
  }
  if( p->zBaseline==0 ) return 0;
  fetch_baseline(p, 1);
  pBase = p->pBaseline;
  if( pBase==0 ) return 0;
  for(i=0; i<pBase->nFile; i++){
    if( fossil_stricmp(zName, pBase->aFile[i].zName)==0 ){
      return &pBase->aFile[i];
    }
  }
  return 0;
}

/*
** Add mlink table entries associated with manifest cid.  The
** parent manifest is pid.
** Add mlink table entries associated with manifest cid, pChild.  The
** parent manifest is pid, pParent.  One of either pChild or pParent
** will be NULL and it will be computed based on cid/pid.
**
** A single mlink entry is added for every file that changed content
** and/or name going from pid to cid.
** A single mlink entry is added for every file that changed content,
** name, and/or permissions going from pid to cid.
**
** Deleted files have mlink.fid=0.
** Added files have mlink.pid=0.
** File added by merge have mlink.pid=-1
** Edited files have both mlink.pid!=0 and mlink.fid!=0
**
** Many mlink entries for merge parents will only be added if another mlink
** entry already exists for the same file from the primary parent.  Therefore,
** to ensure that all merge-parent mlink entries are properly created:
**
**    (1) Make this routine a no-op if pParent is a merge parent and the
**        primary parent is a phantom.
**    (2) Invoke this routine recursively for merge-parents if pParent is the
**        primary parent.
*/
static void add_mlink(int pid, Manifest *pParent, int cid, Manifest *pChild){
  Manifest other;
static void add_mlink(
  int pmid, Manifest *pParent,  /* Parent check-in */
  int mid,  Manifest *pChild,   /* The child check-in */
  int isPrim                    /* TRUE if pmid is the primary parent of mid */
){
  Blob otherContent;
  int otherRid;
  int i, j;
  int i, rc;
  ManifestFile *pChildFile, *pParentFile;
  Manifest **ppOther;
  static Stmt eq;
  int isPublic;                /* True if pChild is non-private */

  /* If mlink table entires are already exist for the pmid-to-mid transition,
  ** then abort early doing no work.
  */
  if( db_exists("SELECT 1 FROM mlink WHERE mid=%d", cid) ){
    return;
  }
  db_static_prepare(&eq, "SELECT 1 FROM mlink WHERE mid=:mid AND pmid=:pmid");
  db_bind_int(&eq, ":mid", mid);
  db_bind_int(&eq, ":pmid", pmid);
  rc = db_step(&eq);
  db_reset(&eq);
  if( rc==SQLITE_ROW ) return;

  /* Compute the value of the missing pParent or pChild parameter.
  ** Fetch the baseline check-ins for both.
  */
  assert( pParent==0 || pChild==0 );
  if( pParent==0 ){
    pParent = &other;
    content_get(pid, &otherContent);
    ppOther = &pParent;
    otherRid = pmid;
  }else{
    pChild = &other;
    content_get(cid, &otherContent);
    ppOther = &pChild;
    otherRid = mid;
  }
  if( (*ppOther = manifest_cache_find(otherRid))==0 ){
    content_get(otherRid, &otherContent);
  if( blob_size(&otherContent)==0 ) return;
  if( manifest_parse(&other, &otherContent)==0 ) return;
  content_deltify(pid, cid, 0);

  /* Use the iRename fields to find the cross-linkage between
    if( blob_size(&otherContent)==0 ) return;
    *ppOther = manifest_parse(&otherContent, otherRid, 0);
    if( *ppOther==0 ) return;
  }
  if( fetch_baseline(pParent, 0) || fetch_baseline(pChild, 0) ){
    manifest_destroy(*ppOther);
    return;
  }
  isPublic = !content_is_private(mid);

  /* If pParent is not the primary parent of pChild, and the primary
  ** parent of pChild is a phantom, then abort this routine without
  ** doing any work.  The mlink entries will be computed when the
  ** primary parent dephantomizes.
  */
  if( !isPrim && otherRid==mid
   && !db_exists("SELECT 1 FROM blob WHERE uuid=%Q AND size>0",
                 pChild->azParent[0])
  ){
    manifest_cache_insert(*ppOther);
    return;
  }

  /* Try to make the parent manifest a delta from the child, if that
  ** is an appropriate thing to do.  For a new baseline, make the
  ** previous baseline a delta from the current baseline.
  */
  if( (pParent->zBaseline==0)==(pChild->zBaseline==0) ){
    content_deltify(pmid, &mid, 1, 0);
  }else if( pChild->zBaseline==0 && pParent->zBaseline!=0 ){
    content_deltify(pParent->pBaseline->rid, &mid, 1, 0);
  }

  ** renamed files.  */
  for(j=0; j<pChild->nFile; j++){
  /* Remember all children less than a few seconds younger than their parent,
  ** as we might want to fudge the times for those children.
  */
  if( pChild->rDate<pParent->rDate+AGE_FUDGE_WINDOW
    const char *zPrior = pChild->aFile[j].zPrior;
    if( zPrior && zPrior[0] ){
      i = find_file_in_manifest(pParent, zPrior);
      if( i>=0 ){
      && manifest_crosslink_busy
  ){
        pChild->aFile[j].iRename = i;
        pParent->aFile[i].iRename = j;
      }
    }
    db_multi_exec(
       "INSERT OR REPLACE INTO time_fudge VALUES(%d, %.17g, %d, %.17g);",
       pParent->rid, pParent->rDate, pChild->rid, pChild->rDate
    );
  }

  }

  /* Construct the mlink entries */
  for(i=j=0; i<pParent->nFile && j<pChild->nFile; ){
    int c;
    if( pParent->aFile[i].iRename>=0 ){
  /* First look at all files in pChild, ignoring its baseline.  This
  ** is where most of the changes will be found.
  */
  for(i=0, pChildFile=pChild->aFile; i<pChild->nFile; i++, pChildFile++){
    int mperm = manifest_file_mperm(pChildFile);
    if( pChildFile->zPrior ){
       pParentFile = manifest_file_seek(pParent, pChildFile->zPrior, 0);
       if( pParentFile ){
         /* File with name change */
         add_one_mlink(pmid, pParentFile->zUuid, mid, pChildFile->zUuid,
                       pChildFile->zName, pChildFile->zPrior,
                       isPublic, isPrim, mperm);
       }else{
         /* File name changed, but the old name is not found in the parent!
         ** Treat this like a new file. */
         add_one_mlink(pmid, 0, mid, pChildFile->zUuid, pChildFile->zName, 0,
                       isPublic, isPrim, mperm);
       }
    }else{
       pParentFile = manifest_file_seek(pParent, pChildFile->zName, 0);
       if( pParentFile==0 ){
         if( pChildFile->zUuid ){
           /* A new file */
           add_one_mlink(pmid, 0, mid, pChildFile->zUuid, pChildFile->zName, 0,
                         isPublic, isPrim, mperm);
         }
       }else if( fossil_strcmp(pChildFile->zUuid, pParentFile->zUuid)!=0
              || manifest_file_mperm(pParentFile)!=mperm ){
         /* Changes in file content or permissions */
         add_one_mlink(pmid, pParentFile->zUuid, mid, pChildFile->zUuid,
                       pChildFile->zName, 0, isPublic, isPrim, mperm);
       }
    }
  }
  if( pParent->zBaseline && pChild->zBaseline ){
    /* Both parent and child are delta manifests.  Look for files that
    ** are deleted or modified in the parent but which reappear or revert
    ** to baseline in the child and show such files as being added or changed
    ** in the child. */
    for(i=0, pParentFile=pParent->aFile; i<pParent->nFile; i++, pParentFile++){
      if( pParentFile->zUuid ){
      i++;
    }else if( (c = strcmp(pParent->aFile[i].zName, pChild->aFile[j].zName))<0 ){
      add_one_mlink(cid, pParent->aFile[i].zUuid,0,pParent->aFile[i].zName,0);
      i++;
    }else if( c>0 ){
      int rn = pChild->aFile[j].iRename;
      if( rn>=0 ){
        add_one_mlink(cid, pParent->aFile[rn].zUuid, pChild->aFile[j].zUuid, 
                      pChild->aFile[j].zName, pParent->aFile[rn].zName);
      }else{
        add_one_mlink(cid, 0, pChild->aFile[j].zUuid, pChild->aFile[j].zName,0);
      }
      j++;
        pChildFile = manifest_file_seek_base(pChild, pParentFile->zName, 0);
        if( pChildFile==0 ){
          /* The child file reverts to baseline.  Show this as a change */
          pChildFile = manifest_file_seek(pChild, pParentFile->zName, 0);
          if( pChildFile ){
            add_one_mlink(pmid, pParentFile->zUuid, mid, pChildFile->zUuid,
                          pChildFile->zName, 0, isPublic, isPrim,
                          manifest_file_mperm(pChildFile));
          }
        }
      }else{
        pChildFile = manifest_file_seek(pChild, pParentFile->zName, 0);
        if( pChildFile ){
          /* File resurrected in the child after having been deleted in
          ** the parent.  Show this as an added file. */
          add_one_mlink(pmid, 0, mid, pChildFile->zUuid, pChildFile->zName, 0,
                        isPublic, isPrim, manifest_file_mperm(pChildFile));
        }
      }
    }
  }else if( pChild->zBaseline==0 ){
    /* pChild is a baseline.  Look for files that are present in pParent
    ** but are missing from pChild and mark them as having been deleted. */
    manifest_file_rewind(pParent);
    while( (pParentFile = manifest_file_next(pParent,0))!=0 ){
      pChildFile = manifest_file_seek(pChild, pParentFile->zName, 0);
      if( pChildFile==0 && pParentFile->zUuid!=0 ){
        add_one_mlink(pmid, pParentFile->zUuid, mid, 0, pParentFile->zName, 0,
                      isPublic, isPrim, 0);
      }
    }
  }
  manifest_cache_insert(*ppOther);

  /* If pParent is the primary parent of pChild, also run this analysis
  ** for all merge parents of pChild
  */
  if( isPrim ){
    for(i=1; i<pChild->nParent; i++){
      pmid = uuid_to_rid(pChild->azParent[i], 0);
      if( pmid<=0 ) continue;
      add_mlink(pmid, 0, mid, pChild, 0);
    }
    for(i=0; i<pChild->nCherrypick; i++){
    }else{
      if( strcmp(pParent->aFile[i].zUuid, pChild->aFile[j].zUuid)!=0 ){
        add_one_mlink(cid, pParent->aFile[i].zUuid, pChild->aFile[j].zUuid, 
                      pChild->aFile[j].zName, 0);
      if( pChild->aCherrypick[i].zCPTarget[0]=='+'
       && (pmid = uuid_to_rid(pChild->aCherrypick[i].zCPTarget+1, 0))>0
      ){
        add_mlink(pmid, 0, mid, pChild, 0);
      }
      i++;
      j++;
    }
  }
  while( i<pParent->nFile ){
    if( pParent->aFile[i].iRename<0 ){
      add_one_mlink(cid, pParent->aFile[i].zUuid, 0, pParent->aFile[i].zName,0);
    }
}
    i++;
  }
  while( j<pChild->nFile ){
    int rn = pChild->aFile[j].iRename;
    if( rn>=0 ){
      add_one_mlink(cid, pParent->aFile[rn].zUuid, pChild->aFile[j].zUuid, 
                    pChild->aFile[j].zName, pParent->aFile[rn].zName);
    }else{

/*
** For a check-in with RID "rid" that has nParent parent check-ins given
** by the hashes in azParent[], create all appropriate plink and mlink table
** entries.
**
** The primary parent is the first hash on the azParent[] list.
**
** Return the RID of the primary parent.
*/
static int manifest_add_checkin_linkages(
  int rid,                   /* The RID of the check-in */
  Manifest *p,               /* Manifest for this check-in */
  int nParent,               /* Number of parents for this check-in */
  char * const * azParent    /* hashes for each parent */
){
  int i;
  int parentid = 0;
  char zBaseId[30];    /* Baseline manifest RID for deltas.  "NULL" otherwise */
  Stmt q;
  int nLink;

  if( p->zBaseline ){
     sqlite3_snprintf(sizeof(zBaseId), zBaseId, "%d",
                      uuid_to_rid(p->zBaseline,1));
  }else{
      add_one_mlink(cid, 0, pChild->aFile[j].zUuid, pChild->aFile[j].zName,0);
    }
    j++;
     sqlite3_snprintf(sizeof(zBaseId), zBaseId, "NULL");
  }
  for(i=0; i<nParent; i++){
    int pid = uuid_to_rid(azParent[i], 1);
    db_multi_exec(
       "INSERT OR IGNORE INTO plink(pid, cid, isprim, mtime, baseid)"
        "VALUES(%d, %d, %d, %.17g, %s)",
       pid, rid, i==0, p->rDate, zBaseId/*safe-for-%s*/);
    if( i==0 ) parentid = pid;
  }
  add_mlink(parentid, 0, rid, p, 1);
  nLink = nParent;
  manifest_clear(&other);
}

  for(i=0; i<p->nCherrypick; i++){
    if( p->aCherrypick[i].zCPTarget[0]=='+' ) nLink++;
  }
  if( nLink>1 ){
    /* Change MLINK.PID from 0 to -1 for files that are added by merge. */
    db_multi_exec(
      "UPDATE mlink SET pid=-1"
      " WHERE mid=%d"
      "   AND pid=0"
      "   AND fnid IN "
      "  (SELECT fnid FROM mlink WHERE mid=%d GROUP BY fnid"
      "    HAVING count(*)<%d)",
      rid, rid, nLink
    );
  }
  db_prepare(&q, "SELECT cid, isprim FROM plink WHERE pid=%d", rid);
  while( db_step(&q)==SQLITE_ROW ){
    int cid = db_column_int(&q, 0);
    int isprim = db_column_int(&q, 1);
    add_mlink(rid, p, cid, 0, isprim);
  }
  db_finalize(&q);
  if( nParent==0 ){
    /* For root files (files without parents) add mlink entries
    ** showing all content as new. */
    int isPublic = !content_is_private(rid);
    for(i=0; i<p->nFile; i++){
      add_one_mlink(0, 0, rid, p->aFile[i].zUuid, p->aFile[i].zName, 0,
                    isPublic, 1, manifest_file_mperm(&p->aFile[i]));
    }
  }
  return parentid;
}

/*
** True if manifest_crosslink_begin() has been called but
** manifest_crosslink_end() is still pending.
** There exists a "parent" tag against check-in rid that has value zValue.
** If value is well-formed (meaning that it is a list of hashes), then use
** zValue to reparent check-in rid.
*/
void manifest_reparent_checkin(int rid, const char *zValue){
  int nParent = 0;
  char *zCopy = 0;
  char **azParent = 0;
  Manifest *p = 0;
  int i, j;
  int n = (int)strlen(zValue);
  int mxParent = (n+1)/(HNAME_MIN+1);
static int manifest_crosslink_busy = 0;

  if( mxParent<1 ) return;
  zCopy = fossil_strdup(zValue);
  azParent = fossil_malloc( sizeof(azParent[0])*mxParent );
  for(nParent=0, i=0; zCopy[i]; i++){
    char *z = &zCopy[i];
    azParent[nParent++] = z;
    if( nParent>mxParent ) goto reparent_abort;
    for(j=HNAME_MIN; z[j]>' '; j++){}
    if( !hname_validate(z, j) ) goto reparent_abort;
    if( z[j]==0 ) break;
    z[j] = 0;
    i += j;
  }
  p = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( p!=0 ){
    db_multi_exec(
       "DELETE FROM plink WHERE cid=%d;"
       "DELETE FROM mlink WHERE mid=%d;",
       rid, rid
    );
    manifest_add_checkin_linkages(rid,p,nParent,azParent);
    manifest_destroy(p);
  }
reparent_abort:
  fossil_free(azParent);
  fossil_free(zCopy);
}

/*
** Setup to do multiple manifest_crosslink() calls.
**
** This routine creates TEMP tables for holding information for
** This is only required if processing ticket changes.
** processing that must be deferred until all artifacts have been
** seen at least once.  The deferred processing is accomplished
** by the call to manifest_crosslink_end().
*/
void manifest_crosslink_begin(void){
  assert( manifest_crosslink_busy==0 );
  manifest_crosslink_busy = 1;
  manifest_create_event_triggers();
  db_begin_transaction();
  db_multi_exec("CREATE TEMP TABLE pending_tkt(uuid TEXT UNIQUE)");
  db_multi_exec(
     "CREATE TEMP TABLE pending_xlink(id TEXT PRIMARY KEY)WITHOUT ROWID;"
     "CREATE TEMP TABLE time_fudge("
     "  mid INTEGER PRIMARY KEY,"    /* The rid of a manifest */
     "  m1 REAL,"                    /* The timestamp on mid */
     "  cid INTEGER,"                /* A child or mid */
     "  m2 REAL"                     /* Timestamp on the child */
     ");"
  );
}

/*
** Add a new entry to the pending_xlink table.
*/
static void add_pending_crosslink(char cType, const char *zId){
  assert( manifest_crosslink_busy==1 );
  db_multi_exec(
    "INSERT OR IGNORE INTO pending_xlink VALUES('%c%q')",
    cType, zId
  );
}

#if INTERFACE
/* Timestamps might be adjusted slightly to ensure that check-ins appear
** on the timeline in chronological order.  This is the maximum amount
** of the adjustment window, in days.
*/
#define AGE_FUDGE_WINDOW      (2.0/86400.0)       /* 2 seconds */

/* This is increment (in days) by which timestamps are adjusted for
** use on the timeline.
*/
#define AGE_ADJUST_INCREMENT  (25.0/86400000.0)   /* 25 milliseconds */

#endif /* LOCAL_INTERFACE */

/*
** Finish up a sequence of manifest_crosslink calls.
*/
void manifest_crosslink_end(void){
  Stmt q;
int manifest_crosslink_end(int flags){
  Stmt q, u;
  int i;
  int rc = TH_OK;
  int permitHooks = (flags & MC_PERMIT_HOOKS);
  const char *zScript = 0;
  assert( manifest_crosslink_busy==1 );
  if( permitHooks ){
    rc = xfer_run_common_script();
    if( rc==TH_OK ){
      zScript = xfer_ticket_code();
    }
  }
  db_prepare(&q, "SELECT uuid FROM pending_tkt");
  db_prepare(&q,
     "SELECT rid, value FROM tagxref"
     " WHERE tagid=%d AND tagtype=1",
     TAG_PARENT
  );
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q,0);
    const char *zValue = db_column_text(&q,1);
    manifest_reparent_checkin(rid, zValue);
  }
  db_finalize(&q);
  db_prepare(&q, "SELECT id FROM pending_xlink");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    ticket_rebuild_entry(zUuid);
  }
    const char *zId = db_column_text(&q, 0);
    char cType;
    if( zId==0 || zId[0]==0 ) continue;
    cType = zId[0];
    zId++;
    if( cType=='t' ){
      ticket_rebuild_entry(zId);
      if( permitHooks && rc==TH_OK ){
        rc = xfer_run_script(zScript, zId, 0);
      }
    }else if( cType=='w' ){
      backlink_wiki_refresh(zId);
    }
  }
  db_finalize(&q);
  db_multi_exec("DROP TABLE pending_tkt");
  db_multi_exec("DROP TABLE pending_xlink");

  /* If multiple check-ins happen close together in time, adjust their
  ** times by a few milliseconds to make sure they appear in chronological
  ** order.
  */
  db_prepare(&q,
      "UPDATE time_fudge SET m1=m2-:incr WHERE m1>=m2 AND m1<m2+:window"
  );
  db_bind_double(&q, ":incr", AGE_ADJUST_INCREMENT);
  db_bind_double(&q, ":window", AGE_FUDGE_WINDOW);
  db_prepare(&u,
      "UPDATE time_fudge SET m2="
         "(SELECT x.m1 FROM time_fudge AS x WHERE x.mid=time_fudge.cid)"
  );
  for(i=0; i<30; i++){
    db_step(&q);
    db_reset(&q);
    if( sqlite3_changes(g.db)==0 ) break;
    db_step(&u);
    db_reset(&u);
  }
  db_finalize(&q);
  db_finalize(&u);
  if( db_exists("SELECT 1 FROM time_fudge") ){
    db_multi_exec(
      "UPDATE event SET mtime=(SELECT m1 FROM time_fudge WHERE mid=objid)"
      " WHERE objid IN (SELECT mid FROM time_fudge)"
      " AND (mtime=omtime OR omtime IS NULL)"
    );
  }
  db_multi_exec("DROP TABLE time_fudge;");

  db_end_transaction(0);
  manifest_crosslink_busy = 0;
  return ( rc!=TH_ERROR );
}

/*
** Activate EVENT triggers if they do not already exist.
*/
void manifest_create_event_triggers(void){
  if( manifest_event_triggers_are_enabled ){
    return;  /* Triggers already exists.  No-op. */
  }
  alert_create_trigger();
  manifest_event_triggers_are_enabled = 1;
}

/*
** Disable manifest event triggers.  Drop them if they exist, but mark
** them has having been created so that they won't be recreated.  This
** is used during "rebuild" to prevent triggers from firing then.
*/
void manifest_disable_event_triggers(void){
  alert_drop_trigger();
  manifest_event_triggers_are_enabled = 1;
}


/*
** Make an entry in the event table for a ticket change artifact.
*/
void manifest_ticket_event(
  int rid,                    /* Artifact ID of the change ticket artifact */
  const Manifest *pManifest,  /* Parsed content of the artifact */
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  blob_zero(&comment);
  blob_zero(&brief);
  if( once ){
    once = 0;
    zTitleExpr = db_get("ticket-title-expr", "title");
    zStatusColumn = db_get("ticket-status-column", "status");
  }
  zTitle = db_text("unknown", 
    "SELECT %s FROM ticket WHERE tkt_uuid='%s'",
  zTitle = db_text("unknown",
    "SELECT \"%w\" FROM ticket WHERE tkt_uuid=%Q",
    zTitleExpr, pManifest->zTicketUuid
  );
  if( !isNew ){
    for(i=0; i<pManifest->nField; i++){
      if( strcmp(pManifest->aField[i].zName, zStatusColumn)==0 ){
      if( fossil_strcmp(pManifest->aField[i].zName, zStatusColumn)==0 ){
        zNewStatus = pManifest->aField[i].zValue;
      }
    }
    if( zNewStatus ){
      blob_appendf(&comment, "%h ticket [%.10s]: <i>%s</i>",
         zNewStatus, pManifest->zTicketUuid, zTitle
      blob_appendf(&comment, "%h ticket [%!S|%S]: <i>%h</i>",
         zNewStatus, pManifest->zTicketUuid, pManifest->zTicketUuid, zTitle
      );
      if( pManifest->nField>1 ){
        blob_appendf(&comment, " plus %d other change%s",
          pManifest->nField-1, pManifest->nField==2 ? "" : "s");
      }
      blob_appendf(&brief, "%h ticket [%.10s].",
                   zNewStatus, pManifest->zTicketUuid);
      blob_appendf(&brief, "%h ticket [%!S|%S].",
                   zNewStatus, pManifest->zTicketUuid, pManifest->zTicketUuid);
    }else{
      zNewStatus = db_text("unknown", 
         "SELECT %s FROM ticket WHERE tkt_uuid='%s'",
      zNewStatus = db_text("unknown",
         "SELECT \"%w\" FROM ticket WHERE tkt_uuid=%Q",
         zStatusColumn, pManifest->zTicketUuid
      );
      blob_appendf(&comment, "Ticket [%.10s] <i>%s</i> status still %h with "
      blob_appendf(&comment, "Ticket [%!S|%S] <i>%h</i> status still %h with "
           "%d other change%s",
           pManifest->zTicketUuid, zTitle, zNewStatus, pManifest->nField,
           pManifest->nField==1 ? "" : "s"
           pManifest->zTicketUuid, pManifest->zTicketUuid, zTitle, zNewStatus,
           pManifest->nField, pManifest->nField==1 ? "" : "s"
      );
      free(zNewStatus);
      blob_appendf(&brief, "Ticket [%.10s]: %d change%s",
           pManifest->zTicketUuid, pManifest->nField,
      fossil_free(zNewStatus);
      blob_appendf(&brief, "Ticket [%!S|%S]: %d change%s",
           pManifest->zTicketUuid, pManifest->zTicketUuid, pManifest->nField,
           pManifest->nField==1 ? "" : "s"
      );
    }
  }else{
    blob_appendf(&comment, "New ticket [%.10s] <i>%h</i>.",
      pManifest->zTicketUuid, zTitle
    blob_appendf(&comment, "New ticket [%!S|%S] <i>%h</i>.",
      pManifest->zTicketUuid, pManifest->zTicketUuid, zTitle
    );
    blob_appendf(&brief, "New ticket [%.10s].", pManifest->zTicketUuid);
    blob_appendf(&brief, "New ticket [%!S|%S].", pManifest->zTicketUuid,
        pManifest->zTicketUuid);
  }
  free(zTitle);
  db_multi_exec(
    "REPLACE INTO event(type,tagid,mtime,objid,user,comment,brief)"
    "VALUES('t',%d,%.17g,%d,%Q,%Q,%Q)",
    tktTagId, pManifest->rDate, rid, pManifest->zUser,
    blob_str(&comment), blob_str(&brief)
  );
  fossil_free(zTitle);
  manifest_create_event_triggers();
  if( db_exists("SELECT 1 FROM event WHERE type='t' AND objid=%d", rid) ){
    /* The ticket_rebuild_entry() function redoes all of the event entries
    ** for a ticket whenever a new event appears.  Be careful to only UPDATE
    ** existing events, so that they do not get turned into alerts by
    ** the alert trigger. */
    db_multi_exec(
      "UPDATE event SET tagid=%d, mtime=%.17g, user=%Q, comment=%Q, brief=%Q"
      " WHERE objid=%d",
      tktTagId, pManifest->rDate, pManifest->zUser,
      blob_str(&comment), blob_str(&brief), rid
    );
  }else{
    db_multi_exec(
      "REPLACE INTO event(type,tagid,mtime,objid,user,comment,brief)"
      "VALUES('t',%d,%.17g,%d,%Q,%Q,%Q)",
      tktTagId, pManifest->rDate, rid, pManifest->zUser,
      blob_str(&comment), blob_str(&brief)
    );
  }
  blob_reset(&comment);
  blob_reset(&brief);
}

/*
** Add an extra line of text to the end of a manifest to prevent it being
** recognized as a valid manifest.
**
** This routine is called prior to writing out the text of a manifest as
** the "manifest" file in the root of a repository when
** "fossil setting manifest on" is enabled.  That way, if the files of
** the project are imported into a different Fossil project, the manifest
** file will not be interpreted as a control artifact in that other project.
**
** Normally it is sufficient to simply append the extra line of text.
** However, if the manifest is PGP signed then the extra line has to be
** inserted before the PGP signature (thus invalidating the signature).
*/
void sterilize_manifest(Blob *p, int eType){
  char *z, *zOrig;
  int n, nOrig;
  static const char zExtraLine[] =
      "# Remove this line to create a well-formed Fossil %s.\n";
  const char *zType = eType==CFTYPE_MANIFEST ? "manifest" : "control artifact";

  z = zOrig = blob_materialize(p);
  n = nOrig = blob_size(p);
  remove_pgp_signature((const char **)&z, &n);
  if( z==zOrig ){
    blob_appendf(p, zExtraLine/*works-like:"%s"*/, zType);
  }else{
    int iEnd;
    Blob copy;
    memcpy(&copy, p, sizeof(copy));
    blob_init(p, 0, 0);
    iEnd = (int)(&z[n] - zOrig);
    blob_append(p, zOrig, iEnd);
    blob_appendf(p, zExtraLine/*works-like:"%s"*/, zType);
    blob_append(p, &zOrig[iEnd], -1);
    blob_zero(&copy);
  }
}

/*
** This is the comparison function used to sort the tag array.
*/
static int tag_compare(const void *a, const void *b){
  struct TagType *pA = (struct TagType*)a;
  struct TagType *pB = (struct TagType*)b;
  int c;
  c = fossil_strcmp(pA->zUuid, pB->zUuid);
  if( c==0 ){
    c = fossil_strcmp(pA->zName, pB->zName);
  }
  return c;
}

/*
** Inserts plink entries for FORUM, WIKI, and TECHNOTE manifests. May
** assert for other manifest types. If a parent entry exists, it also
** propagates any tags for that parent. This is a no-op if
** p->nParent==0.
*/
static void manifest_add_fwt_plink(int rid, Manifest *p){
  int i;
  int parentId = 0;
  assert(p->type==CFTYPE_WIKI ||
         p->type==CFTYPE_FORUM ||
         p->type==CFTYPE_EVENT);
  for(i=0; i<p->nParent; ++i){
    int const pid = uuid_to_rid(p->azParent[i], 1);
    if(0==i){
      parentId = pid;
    }
    db_multi_exec(
                  "INSERT OR IGNORE INTO plink"
                  "(pid, cid, isprim, mtime, baseid)"
                  "VALUES(%d, %d, %d, %.17g, NULL)",
                  pid, rid, i==0, p->rDate);
  }
  if(parentId){
    tag_propagate_all(parentId);
  }
}

/*
** Scan artifact rid/pContent to see if it is a control artifact of
** any key:
** any type:
**
**      *  Manifest
**      *  Control
**      *  Wiki Page
**      *  Ticket Change
**      *  Cluster
**      *  Attachment
**      *  Event
**      *  Forum post
**
** If the input is a control artifact, then make appropriate entries
** in the auxiliary tables of the database in order to crosslink the
** artifact.
**
** If global variable g.xlinkClusterOnly is true, then ignore all 
** If global variable g.xlinkClusterOnly is true, then ignore all
** control artifacts other than clusters.
**
** This routine always resets the pContent blob before returning.
**
** Historical note:  This routine original processed manifests only.
** Processing for other control artifacts was added later.  The name
** of the routine, "manifest_crosslink", and the name of this source
** file, is a legacy of its original use.
*/
int manifest_crosslink(int rid, Blob *pContent){
  int i;
  Manifest m;
int manifest_crosslink(int rid, Blob *pContent, int flags){
  int i, rc = TH_OK;
  Manifest *p;
  Stmt q;
  int parentid = 0;
  int permitHooks = (flags & MC_PERMIT_HOOKS);
  const char *zScript = 0;
  char *zUuid = 0;

  if( g.fSqlTrace ){
    fossil_trace("-- manifest_crosslink(%d)\n", rid);
  }
  manifest_create_event_triggers();
  if( (p = manifest_cache_find(rid))!=0 ){
    blob_reset(pContent);
  if( manifest_parse(&m, pContent)==0 ){
  }else if( (p = manifest_parse(pContent, rid, 0))==0 ){
    assert( blob_is_reset(pContent) || pContent==0 );
    if( (flags & MC_NO_ERRORS)==0 ){
      char * zErrUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d",rid);
      fossil_error(1, "syntax error in manifest [%S]", zErrUuid);
      fossil_free(zErrUuid);
    }
    return 0;
  }
  if( g.xlinkClusterOnly && m.type!=CFTYPE_CLUSTER ){
    manifest_clear(&m);
  if( g.xlinkClusterOnly && p->type!=CFTYPE_CLUSTER ){
    manifest_destroy(p);
    assert( blob_is_reset(pContent) );
    if( (flags & MC_NO_ERRORS)==0 ) fossil_error(1, "no manifest");
    return 0;
  }
  if( p->type==CFTYPE_MANIFEST && fetch_baseline(p, 0) ){
    manifest_destroy(p);
    assert( blob_is_reset(pContent) );
    if( (flags & MC_NO_ERRORS)==0 ){
      fossil_error(1, "cannot fetch baseline for manifest [%S]",
                   db_text(0, "SELECT uuid FROM blob WHERE rid=%d",rid));
    }
    return 0;
  }
  db_begin_transaction();
  if( m.type==CFTYPE_MANIFEST ){
  if( p->type==CFTYPE_MANIFEST ){
    if( permitHooks ){
      zScript = xfer_commit_code();
      zUuid = rid_to_uuid(rid);
    }
    if( p->nCherrypick && db_table_exists("repository","cherrypick") ){
      int i;
      for(i=0; i<p->nCherrypick; i++){
        db_multi_exec(
          "REPLACE INTO cherrypick(parentid,childid,isExclude)"
          " SELECT rid, %d, %d FROM blob WHERE uuid=%Q",
          rid, p->aCherrypick[i].zCPTarget[0]=='-',
          p->aCherrypick[i].zCPTarget+1
        );
      }
    }
    if( !db_exists("SELECT 1 FROM mlink WHERE mid=%d", rid) ){
      char *zCom;
      for(i=0; i<m.nParent; i++){
        int pid = uuid_to_rid(m.azParent[i], 1);
        db_multi_exec("INSERT OR IGNORE INTO plink(pid, cid, isprim, mtime)"
                      "VALUES(%d, %d, %d, %.17g)", pid, rid, i==0, m.rDate);
        if( i==0 ){
          add_mlink(pid, 0, rid, &m);
          parentid = pid;
      parentid = manifest_add_checkin_linkages(rid,p,p->nParent,p->azParent);
        }
      }
      db_prepare(&q, "SELECT cid FROM plink WHERE pid=%d AND isprim", rid);
      while( db_step(&q)==SQLITE_ROW ){
        int cid = db_column_int(&q, 0);
        add_mlink(rid, &m, cid, 0);
      search_doc_touch('c', rid, 0);
      }
      db_finalize(&q);
      db_multi_exec(
      assert( manifest_event_triggers_are_enabled );
      zCom = db_text(0,
        "REPLACE INTO event(type,mtime,objid,user,comment,"
                           "bgcolor,euser,ecomment)"
                           "bgcolor,euser,ecomment,omtime)"
        "VALUES('ci',"
        "  coalesce("
        "    (SELECT julianday(value) FROM tagxref WHERE tagid=%d AND rid=%d),"
        "    %.17g"
        "  ),"
        "  %d,%Q,%Q,"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d AND tagtype>0),"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d),"
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d));",
        TAG_DATE, rid, m.rDate,
        rid, m.zUser, m.zComment, 
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d),%.17g)"
        "RETURNING coalesce(ecomment,comment);",
        TAG_DATE, rid, p->rDate,
        rid, p->zUser, p->zComment,
        TAG_BGCOLOR, rid,
        TAG_USER, rid,
        TAG_COMMENT, rid
        TAG_COMMENT, rid, p->rDate
      );
      zCom = db_text(0, "SELECT coalesce(ecomment, comment) FROM event"
                        " WHERE rowid=last_insert_rowid()");
      wiki_extract_links(zCom, rid, 0, m.rDate, 1, WIKI_INLINE);
      free(zCom);
    }
  }
  if( m.type==CFTYPE_CLUSTER ){
    tag_insert("cluster", 1, 0, rid, m.rDate, rid);
    for(i=0; i<m.nCChild; i++){
      backlink_extract(zCom, MT_NONE, rid, BKLNK_COMMENT, p->rDate, 1);
      fossil_free(zCom);

      /* If this is a delta-manifest, record the fact that this repository
      ** contains delta manifests, to free the "commit" logic to generate
      ** new delta manifests.
      */
      if( p->zBaseline!=0 ){
        static int once = 1;
        if( once ){
          db_set_int("seen-delta-manifest", 1, 0);
          once = 0;
        }
      }
    }
  }
  if( p->type==CFTYPE_CLUSTER ){
    static Stmt del1;
    tag_insert("cluster", 1, 0, rid, p->rDate, rid);
    db_static_prepare(&del1, "DELETE FROM unclustered WHERE rid=:rid");
    for(i=0; i<p->nCChild; i++){
      int mid;
      mid = uuid_to_rid(m.azCChild[i], 1);
      mid = uuid_to_rid(p->azCChild[i], 1);
      if( mid>0 ){
        db_multi_exec("DELETE FROM unclustered WHERE rid=%d", mid);
        db_bind_int(&del1, ":rid", mid);
        db_step(&del1);
        db_reset(&del1);
      }
    }
  }
  if( p->type==CFTYPE_CONTROL
  if( m.type==CFTYPE_CONTROL || m.type==CFTYPE_MANIFEST ){
    for(i=0; i<m.nTag; i++){
   || p->type==CFTYPE_MANIFEST
   || p->type==CFTYPE_EVENT
  ){
    for(i=0; i<p->nTag; i++){
      int tid;
      int type;
      if( m.aTag[i].zUuid ){
        tid = uuid_to_rid(m.aTag[i].zUuid, 1);
      if( p->aTag[i].zUuid ){
        tid = uuid_to_rid(p->aTag[i].zUuid, 1);
      }else{
        tid = rid;
      }
      if( tid ){
        switch( m.aTag[i].zName[0] ){
          case '-':  type = 0;  break;  /* Cancel prior occurances */
        switch( p->aTag[i].zName[0] ){
          case '-':  type = 0;  break;  /* Cancel prior occurrences */
          case '+':  type = 1;  break;  /* Apply to target only */
          case '*':  type = 2;  break;  /* Propagate to descendants */
          default:
            fossil_fatal("unknown tag type in manifest: %s", m.aTag);
            fossil_error(1, "unknown tag type in manifest: %s", p->aTag);
            manifest_destroy(p);
            return 0;
        }
        tag_insert(&m.aTag[i].zName[1], type, m.aTag[i].zValue, 
                   rid, m.rDate, tid);
        tag_insert(&p->aTag[i].zName[1], type, p->aTag[i].zValue,
                   rid, p->rDate, tid);
      }
    }
    if( parentid ){
      tag_propagate_all(parentid);
    }
  }
  if(p->type==CFTYPE_WIKI || p->type==CFTYPE_FORUM
     || p->type==CFTYPE_EVENT){
    manifest_add_fwt_plink(rid, p);
  }
  if( m.type==CFTYPE_WIKI ){
    char *zTag = mprintf("wiki-%s", m.zWikiTitle);
  if( p->type==CFTYPE_WIKI ){
    char *zTag = mprintf("wiki-%s", p->zWikiTitle);
    int prior = 0;
    char cPrefix;
    int nWiki;
    char zLength[40];

    while( fossil_isspace(p->zWiki[0]) ) p->zWiki++;
    nWiki = strlen(p->zWiki);
    sqlite3_snprintf(sizeof(zLength), zLength, "%d", nWiki);
    tag_insert(zTag, 1, zLength, rid, p->rDate, rid);
    fossil_free(zTag);
    if(p->nParent){
      prior = fast_uuid_to_rid(p->azParent[0]);
    }
    if( prior ){
      content_deltify(prior, &rid, 1, 0);
    }
    if( nWiki<=0 ){
      cPrefix = '-';
    }else if( !prior ){
      cPrefix = '+';
    }else{
      cPrefix = ':';
    }
    search_doc_touch('w',rid,p->zWikiTitle);
    if( manifest_crosslink_busy ){
      add_pending_crosslink('w',p->zWikiTitle);
    }else{
      backlink_wiki_refresh(p->zWikiTitle);
    }
    assert( manifest_event_triggers_are_enabled );
    db_multi_exec(
      "REPLACE INTO event(type,mtime,objid,user,comment)"
      "VALUES('w',%.17g,%d,%Q,'%c%q');",
      p->rDate, rid, p->zUser, cPrefix, p->zWikiTitle
    );
  }
  if( p->type==CFTYPE_EVENT ){
    char *zTag = mprintf("event-%s", p->zEventId);
    int tagid = tag_findid(zTag, 1);
    int prior;
    int prior = 0, subsequent;
    char *zComment;
    int nWiki;
    char zLength[40];
    Stmt qatt;
    while( isspace(m.zWiki[0]) ) m.zWiki++;
    nWiki = strlen(m.zWiki);
    while( fossil_isspace(p->zWiki[0]) ) p->zWiki++;
    nWiki = strlen(p->zWiki);
    sqlite3_snprintf(sizeof(zLength), zLength, "%d", nWiki);
    tag_insert(zTag, 1, zLength, rid, m.rDate, rid);
    free(zTag);
    prior = db_int(0,
    tag_insert(zTag, 1, zLength, rid, p->rDate, rid);
    fossil_free(zTag);
    if(p->nParent){
      prior = fast_uuid_to_rid(p->azParent[0]);
    }
    subsequent = db_int(0,
      /* BUG: this check is only correct if subsequent
         version has already been crosslinked. */
      "SELECT rid FROM tagxref"
      " WHERE tagid=%d AND mtime<%.17g"
      " ORDER BY mtime DESC",
      tagid, m.rDate
      " WHERE tagid=%d AND mtime>=%.17g AND rid!=%d"
      " ORDER BY mtime",
      tagid, p->rDate, rid
    );
    if( prior ){
      content_deltify(prior, rid, 0);
    }
    if( nWiki>0 ){
      content_deltify(prior, &rid, 1, 0);
      if( !subsequent ){
        db_multi_exec(
          "DELETE FROM event"
          " WHERE type='e'"
          "   AND tagid=%d"
          "   AND objid IN (SELECT rid FROM tagxref WHERE tagid=%d)",
          tagid, tagid
        );
      }
    }
    if( subsequent ){
      zComment = mprintf("Changes to wiki page [%h]", m.zWikiTitle);
      content_deltify(rid, &subsequent, 1, 0);
    }else{
      zComment = mprintf("Deleted wiki page [%h]", m.zWikiTitle);
      search_doc_touch('e',rid,0);
    }
    db_multi_exec(
      "REPLACE INTO event(type,mtime,objid,user,comment,"
      assert( manifest_event_triggers_are_enabled );
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,tagid,user,comment,bgcolor)"
      "                  bgcolor,euser,ecomment)"
      "VALUES('w',%.17g,%d,%Q,%Q,"
        "VALUES('e',%.17g,%d,%d,%Q,%Q,"
      "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d AND tagtype>1),"
      "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d),"
      "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d));",
      m.rDate, rid, m.zUser, zComment, 
      TAG_BGCOLOR, rid,
      TAG_BGCOLOR, rid,
      TAG_USER, rid,
      TAG_COMMENT, rid
        "  (SELECT value FROM tagxref WHERE tagid=%d AND rid=%d));",
        p->rEventDate, rid, tagid, p->zUser, p->zComment,
        TAG_BGCOLOR, rid
      );
    }
    /* Locate and update comment for any attachments */
    db_prepare(&qatt,
       "SELECT attachid, src, target, filename FROM attachment"
       " WHERE target=%Q",
       p->zEventId
    );
    while( db_step(&qatt)==SQLITE_ROW ){
      const char *zAttachId = db_column_text(&qatt, 0);
      const char *zSrc = db_column_text(&qatt, 1);
      const char *zTarget = db_column_text(&qatt, 2);
      const char *zName = db_column_text(&qatt, 3);
      const char isAdd = (zSrc && zSrc[0]) ? 1 : 0;
      char *zComment;
      if( isAdd ){
        zComment = mprintf(
             "Add attachment [/artifact/%!S|%h] to"
             " tech note [/technote/%!S|%S]",
             zSrc, zName, zTarget, zTarget);
      }else{
        zComment = mprintf(
             "Delete attachment \"%h\" from"
             " tech note [/technote/%!S|%S]",
             zName, zTarget, zTarget);
      }
      db_multi_exec("UPDATE event SET comment=%Q, type='e'"
                       " WHERE objid=%Q",
                    zComment, zAttachId);
    free(zComment);
  }
  if( m.type==CFTYPE_TICKET ){
      fossil_free(zComment);
    }
    db_finalize(&qatt);
  }
  if( p->type==CFTYPE_TICKET ){
    char *zTag;

    Stmt qatt;
    assert( manifest_crosslink_busy==1 );
    zTag = mprintf("tkt-%s", m.zTicketUuid);
    tag_insert(zTag, 1, 0, rid, m.rDate, rid);
    free(zTag);
    db_multi_exec("INSERT OR IGNORE INTO pending_tkt VALUES(%Q)",
                  m.zTicketUuid);
  }
  if( m.type==CFTYPE_ATTACHMENT ){
    zTag = mprintf("tkt-%s", p->zTicketUuid);
    tag_insert(zTag, 1, 0, rid, p->rDate, rid);
    fossil_free(zTag);
    add_pending_crosslink('t',p->zTicketUuid);
    /* Locate and update comment for any attachments */
    db_prepare(&qatt,
       "SELECT attachid, src, target, filename FROM attachment"
       " WHERE target=%Q",
       p->zTicketUuid
    );
    while( db_step(&qatt)==SQLITE_ROW ){
      const char *zAttachId = db_column_text(&qatt, 0);
      const char *zSrc = db_column_text(&qatt, 1);
      const char *zTarget = db_column_text(&qatt, 2);
      const char *zName = db_column_text(&qatt, 3);
      const char isAdd = (zSrc && zSrc[0]) ? 1 : 0;
      char *zComment;
      if( isAdd ){
        zComment = mprintf(
             "Add attachment [/artifact/%!S|%h] to ticket [%!S|%S]",
             zSrc, zName, zTarget, zTarget);
      }else{
        zComment = mprintf("Delete attachment \"%h\" from ticket [%!S|%S]",
             zName, zTarget, zTarget);
      }
      db_multi_exec("UPDATE event SET comment=%Q, type='t'"
                       " WHERE objid=%Q",
                    zComment, zAttachId);
      fossil_free(zComment);
    }
    db_finalize(&qatt);
  }
  if( p->type==CFTYPE_ATTACHMENT ){
    char *zComment = 0;
    const char isAdd = (p->zAttachSrc && p->zAttachSrc[0]) ? 1 : 0;
    /* We assume that we're attaching to a wiki page until we
    ** prove otherwise (which could on a later artifact if we
    ** process the attachment artifact before the artifact to
    ** which it is attached!) */
    char attachToType = 'w';
    if( fossil_is_artifact_hash(p->zAttachTarget) ){
      if( db_exists("SELECT 1 FROM tag WHERE tagname='tkt-%q'",
            p->zAttachTarget)
        ){
        attachToType = 't';          /* Attaching to known ticket */
      }else if( db_exists("SELECT 1 FROM tag WHERE tagname='event-%q'",
                  p->zAttachTarget)
            ){
        attachToType = 'e';          /* Attaching to known tech note */
      }
    }
    db_multi_exec(
       "INSERT INTO attachment(attachid, mtime, src, target,"
                                        "filename, comment, user)"
                              "filename, comment, user)"
       "VALUES(%d,%.17g,%Q,%Q,%Q,%Q,%Q);",
       rid, m.rDate, m.zAttachSrc, m.zAttachTarget, m.zAttachName,
       (m.zComment ? m.zComment : ""), m.zUser
       rid, p->rDate, p->zAttachSrc, p->zAttachTarget, p->zAttachName,
       (p->zComment ? p->zComment : ""), p->zUser
    );
    db_multi_exec(
       "UPDATE attachment SET isLatest = (mtime=="
          "(SELECT max(mtime) FROM attachment"
          "  WHERE target=%Q AND filename=%Q))"
       " WHERE target=%Q AND filename=%Q",
       m.zAttachTarget, m.zAttachName,
       m.zAttachTarget, m.zAttachName
       p->zAttachTarget, p->zAttachName,
       p->zAttachTarget, p->zAttachName
    );
    if( strlen(m.zAttachTarget)!=UUID_SIZE
    if( 'w' == attachToType ){
     || !validate16(m.zAttachTarget, UUID_SIZE) 
    ){
      char *zComment;
      if( isAdd ){
        zComment = mprintf(
      if( m.zAttachSrc && m.zAttachSrc[0] ){
        zComment = mprintf("Add attachment \"%h\" to wiki page [%h]",
             m.zAttachName, m.zAttachTarget);
             "Add attachment [/artifact/%!S|%h] to wiki page [%h]",
             p->zAttachSrc, p->zAttachName, p->zAttachTarget);
      }else{
        zComment = mprintf("Delete attachment \"%h\" from wiki page [%h]",
             p->zAttachName, p->zAttachTarget);
      }
    }else if( 'e' == attachToType ){
      if( isAdd ){
        zComment = mprintf(
          "Add attachment [/artifact/%!S|%h] to tech note [/technote/%!S|%S]",
          p->zAttachSrc, p->zAttachName, p->zAttachTarget, p->zAttachTarget);
      }else{
        zComment = mprintf(
             "Delete attachment \"/artifact/%!S|%h\" from"
             " tech note [/technote/%!S|%S]",
             p->zAttachName, p->zAttachName,
             m.zAttachName, m.zAttachTarget);
             p->zAttachTarget,p->zAttachTarget);
      }
    }else{
      if( isAdd ){
        zComment = mprintf(
             "Add attachment [/artifact/%!S|%h] to ticket [%!S|%S]",
             p->zAttachSrc, p->zAttachName, p->zAttachTarget, p->zAttachTarget);
      }else{
        zComment = mprintf("Delete attachment \"%h\" from ticket [%!S|%S]",
             p->zAttachName, p->zAttachTarget, p->zAttachTarget);
      }
    }
    assert( manifest_event_triggers_are_enabled );
    db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        "VALUES('%c',%.17g,%d,%Q,%Q)",
        attachToType, p->rDate, rid, p->zUser, zComment
    );
    fossil_free(zComment);
  }
  if( p->type==CFTYPE_CONTROL ){
    Blob comment;
    int i;
    const char *zName;
    const char *zValue;
    const char *zTagUuid;
    int branchMove = 0;
    blob_zero(&comment);
    if( p->zComment ){
      blob_appendf(&comment, " %s.", p->zComment);
    }
    /* Next loop expects tags to be sorted on hash, so sort it. */
    qsort(p->aTag, p->nTag, sizeof(p->aTag[0]), tag_compare);
    for(i=0; i<p->nTag; i++){
      zTagUuid = p->aTag[i].zUuid;
      if( !zTagUuid ) continue;
      if( i==0 || fossil_strcmp(zTagUuid, p->aTag[i-1].zUuid)!=0 ){
        blob_appendf(&comment,
           " Edit [%!S|%S]:",
           zTagUuid, zTagUuid);
        branchMove = 0;
        if( permitHooks && db_exists("SELECT 1 FROM event, blob"
            " WHERE event.type='ci' AND event.objid=blob.rid"
            " AND blob.uuid=%Q", zTagUuid) ){
          zScript = xfer_commit_code();
          fossil_free(zUuid);
          zUuid = fossil_strdup(zTagUuid);
        }
      }
      zName = p->aTag[i].zName;
      zValue = p->aTag[i].zValue;
      if( strcmp(zName, "*branch")==0 ){
        blob_appendf(&comment,
           " Move to branch [/timeline?r=%h&nd&dp=%!S&unhide | %h].",
           zValue, zTagUuid, zValue);
        branchMove = 1;
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        continue;
      }else if( strcmp(zName, "*bgcolor")==0 ){
        blob_appendf(&comment,
        "VALUES('w',%.17g,%d,%Q,%Q)",
        m.rDate, rid, m.zUser, zComment
      );
      free(zComment);
    }else{
      char *zComment;
      if( m.zAttachSrc && m.zAttachSrc[0] ){
        zComment = mprintf("Add attachment \"%h\" to ticket [%.10s]",
             m.zAttachName, m.zAttachTarget);
      }else{
        zComment = mprintf("Delete attachment \"%h\" from ticket [%.10s]",
           " Change branch background color to \"%h\".", zValue);
        continue;
      }else if( strcmp(zName, "+bgcolor")==0 ){
        blob_appendf(&comment,
           " Change background color to \"%h\".", zValue);
        continue;
      }else if( strcmp(zName, "-bgcolor")==0 ){
        blob_appendf(&comment, " Cancel background color");
      }else if( strcmp(zName, "+comment")==0 ){
        blob_appendf(&comment, " Edit check-in comment.");
        continue;
      }else if( strcmp(zName, "+user")==0 ){
        blob_appendf(&comment, " Change user to \"%h\".", zValue);
        continue;
      }else if( strcmp(zName, "+date")==0 ){
        blob_appendf(&comment, " Timestamp %h.", zValue);
        continue;
      }else if( memcmp(zName, "-sym-",5)==0 ){
        if( !branchMove ){
          blob_appendf(&comment, " Cancel tag \"%h\"", &zName[5]);
        }else{
          continue;
        }
      }else if( memcmp(zName, "*sym-",5)==0 ){
        if( !branchMove ){
          blob_appendf(&comment, " Add propagating tag \"%h\"", &zName[5]);
        }else{
          continue;
        }
      }else if( memcmp(zName, "+sym-",5)==0 ){
        blob_appendf(&comment, " Add tag \"%h\"", &zName[5]);
      }else if( strcmp(zName, "+closed")==0 ){
        blob_append(&comment, " Mark \"Closed\"", -1);
      }else if( strcmp(zName, "-closed")==0 ){
        blob_append(&comment, " Remove the \"Closed\" mark", -1);
      }else {
        if( zName[0]=='-' ){
          blob_appendf(&comment, " Cancel \"%h\"", &zName[1]);
        }else if( zName[0]=='+' ){
          blob_appendf(&comment, " Add \"%h\"", &zName[1]);
        }else{
          blob_appendf(&comment, " Add propagating \"%h\"", &zName[1]);
        }
        if( zValue && zValue[0] ){
          blob_appendf(&comment, " with value \"%h\".", zValue);
        }else{
          blob_appendf(&comment, ".");
             m.zAttachName, m.zAttachTarget);
        }
        continue;
      }
      if( zValue && zValue[0] ){
        blob_appendf(&comment, " with note \"%h\".", zValue);
      }else{
        blob_appendf(&comment, ".");
      }
    }
    /*blob_appendf(&comment, " &#91;[/info/%S | details]&#93;");*/
    if( blob_size(&comment)==0 ) blob_append(&comment, " ", 1);
    assert( manifest_event_triggers_are_enabled );
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        "VALUES('t',%.17g,%d,%Q,%Q)",
        m.rDate, rid, m.zUser, zComment
      );
      free(zComment);
    db_multi_exec(
      "REPLACE INTO event(type,mtime,objid,user,comment)"
      "VALUES('g',%.17g,%d,%Q,%Q)",
      p->rDate, rid, p->zUser, blob_str(&comment)+1
    );
    blob_reset(&comment);
  }
  if( p->type==CFTYPE_FORUM ){
    int froot, fprev, firt;
    char *zFType;
    char *zTitle;

    assert( 0==zUuid );
    schema_forum();
    search_doc_touch('f', rid, 0);
    froot = p->zThreadRoot ? uuid_to_rid(p->zThreadRoot, 1) : rid;
    fprev = p->nParent ? uuid_to_rid(p->azParent[0],1) : 0;
    firt = p->zInReplyTo ? uuid_to_rid(p->zInReplyTo,1) : 0;
    db_multi_exec(
      "REPLACE INTO forumpost(fpid,froot,fprev,firt,fmtime)"
      "VALUES(%d,%d,nullif(%d,0),nullif(%d,0),%.17g)",
      p->rid, froot, fprev, firt, p->rDate
    );
    if( firt==0 ){
      /* This is the start of a new thread, either the initial entry
      ** or an edit of the initial entry. */
      zTitle = p->zThreadTitle;
      if( zTitle==0 || zTitle[0]==0 ){
        zTitle = "(Deleted)";
      }
      zFType = fprev ? "Edit" : "Post";
      assert( manifest_event_triggers_are_enabled );
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        "VALUES('f',%.17g,%d,%Q,'%q: %q')",
        p->rDate, rid, p->zUser, zFType, zTitle
      );
      /*
      ** If this edit is the most recent, then make it the title for
      ** all other entries for the same thread
      */
      if( !db_exists("SELECT 1 FROM forumpost WHERE froot=%d AND firt=0"
                     "   AND fpid!=%d AND fmtime>%.17g", froot, rid, p->rDate)
      ){
        /* This entry establishes a new title for all entries on the thread */
        db_multi_exec(
          "UPDATE event"
          " SET comment=substr(comment,1,instr(comment,':')) || ' %q'"
          " WHERE objid IN (SELECT fpid FROM forumpost WHERE froot=%d)",
          zTitle, froot
        );
      }
    }else{
      /* This is a reply to a prior post.  Take the title from the root. */
      zTitle = db_text(0, "SELECT substr(comment,instr(comment,':')+2)"
                          "  FROM event WHERE objid=%d", froot);
      if( zTitle==0 ) zTitle = fossil_strdup("<i>Unknown</i>");
      if( p->zWiki[0]==0 ){
        zFType = "Delete reply";
      }else if( fprev ){
        zFType = "Edit reply";
      }else{
        zFType = "Reply";
      }
      assert( manifest_event_triggers_are_enabled );
      db_multi_exec(
        "REPLACE INTO event(type,mtime,objid,user,comment)"
        "VALUES('f',%.17g,%d,%Q,'%q: %q')",
        p->rDate, rid, p->zUser, zFType, zTitle
      );
      fossil_free(zTitle);
    }
    if( p->zWiki[0] ){
      int mimetype = parse_mimetype(p->zMimetype);
      backlink_extract(p->zWiki, mimetype, rid, BKLNK_FORUM, p->rDate, 1);
  }
    }
  }

  db_end_transaction(0);
  if( permitHooks ){
    rc = xfer_run_common_script();
    if( rc==TH_OK ){
      rc = xfer_run_script(zScript, zUuid, 0);
    }
  }
  fossil_free(zUuid);
  if( p->type==CFTYPE_MANIFEST ){
  manifest_clear(&m);
  return 1;
    manifest_cache_insert(p);
  }else{
    manifest_destroy(p);
  }
  assert( blob_is_reset(pContent) );
  return ( rc!=TH_ERROR );
}

/*
** COMMAND: test-crosslink
**
** Usage:  %fossil test-crosslink RECORDID
**
** Run the manifest_crosslink() routine on the artifact with the given
** record ID.  This is typically done in the debugger.
*/
void test_crosslink_cmd(void){
  int rid;
  Blob content;
  db_find_and_open_repository(0, 0);
  if( g.argc!=3 ) usage("RECORDID");
  rid = name_to_rid(g.argv[2]);
  content_get(rid, &content);
  manifest_crosslink(rid, &content, MC_NONE);
}
Added src/markdown.c.

























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2012 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to parse a blob containing markdown text,
** using an external renderer.
*/

#include "config.h"
#include "markdown.h"

#include <assert.h>
#include <string.h>
#include <stdlib.h>

#define MKD_LI_END 8  /* internal list flag */

/********************
 * TYPE DEFINITIONS *
 ********************/

#if INTERFACE

/* mkd_autolink -- type of autolink */
enum mkd_autolink {
  MKDA_NOT_AUTOLINK,    /* used internally when it is not an autolink*/
  MKDA_NORMAL,          /* normal http/http/ftp link */
  MKDA_EXPLICIT_EMAIL,  /* e-mail link with explicit mailto: */
  MKDA_IMPLICIT_EMAIL   /* e-mail link without mailto: */
};

/* mkd_renderer -- functions for rendering parsed data */
struct mkd_renderer {
  /* document level callbacks */
  void (*prolog)(struct Blob *ob, void *opaque);
  void (*epilog)(struct Blob *ob, void *opaque);
  void (*footnotes)(struct Blob *ob, const struct Blob *items, void *opaque);

  /* block level callbacks - NULL skips the block */
  void (*blockcode)(struct Blob *ob, struct Blob *text, void *opaque);
  void (*blockquote)(struct Blob *ob, struct Blob *text, void *opaque);
  void (*blockhtml)(struct Blob *ob, struct Blob *text, void *opaque);
  void (*header)(struct Blob *ob, struct Blob *text,
            int level, void *opaque);
  void (*hrule)(struct Blob *ob, void *opaque);
  void (*list)(struct Blob *ob, struct Blob *text, int flags, void *opaque);
  void (*listitem)(struct Blob *ob, struct Blob *text,
            int flags, void *opaque);
  void (*paragraph)(struct Blob *ob, struct Blob *text, void *opaque);
  void (*table)(struct Blob *ob, struct Blob *head_row, struct Blob *rows,
              void *opaque);
  void (*table_cell)(struct Blob *ob, struct Blob *text, int flags,
              void *opaque);
  void (*table_row)(struct Blob *ob, struct Blob *cells, int flags,
              void *opaque);
  void (*footnote_item)(struct Blob *ob, const struct Blob *text,
              int index, int nUsed, void *opaque);

  /* span level callbacks - NULL or return 0 prints the span verbatim */
  int (*autolink)(struct Blob *ob, struct Blob *link,
          enum mkd_autolink type, void *opaque);
  int (*codespan)(struct Blob *ob, struct Blob *text, int nSep, void *opaque);
  int (*double_emphasis)(struct Blob *ob, struct Blob *text,
            char c, void *opaque);
  int (*emphasis)(struct Blob *ob, struct Blob *text, char c,void*opaque);
  int (*image)(struct Blob *ob, struct Blob *link, struct Blob *title,
            struct Blob *alt, void *opaque);
  int (*linebreak)(struct Blob *ob, void *opaque);
  int (*link)(struct Blob *ob, struct Blob *link, struct Blob *title,
          struct Blob *content, void *opaque);
  int (*raw_html_tag)(struct Blob *ob, struct Blob *tag, void *opaque);
  int (*triple_emphasis)(struct Blob *ob, struct Blob *text,
            char c, void *opaque);
  int (*footnote_ref)(struct Blob *ob, const struct Blob *span,
              const struct Blob *upc, int index, int locus, void *opaque);

  /* low level callbacks - NULL copies input directly into the output */
  void (*entity)(struct Blob *ob, struct Blob *entity, void *opaque);
  void (*normal_text)(struct Blob *ob, struct Blob *text, void *opaque);

  /* renderer data */
  const char *emph_chars; /* chars that trigger emphasis rendering */
  void *opaque; /* opaque data send to every rendering callback */
};



/*********
 * FLAGS *
 *********/

/* list/listitem flags */
#define MKD_LIST_ORDERED  1
#define MKD_LI_BLOCK      2  /* <li> containing block data */

/* table cell flags */
#define MKD_CELL_ALIGN_DEFAULT  0
#define MKD_CELL_ALIGN_LEFT     1
#define MKD_CELL_ALIGN_RIGHT    2
#define MKD_CELL_ALIGN_CENTER   3  /* LEFT | RIGHT */
#define MKD_CELL_ALIGN_MASK     3
#define MKD_CELL_HEAD           4


#endif /* INTERFACE */

#define BLOB_COUNT(pBlob,el_type) (blob_size(pBlob)/sizeof(el_type))
#define COUNT_FOOTNOTES(pBlob) BLOB_COUNT(pBlob,struct footnote)
#define CAST_AS_FOOTNOTES(pBlob) ((struct footnote*)blob_buffer(pBlob))

/***************
 * LOCAL TYPES *
 ***************/

/*
** link_ref -- reference to a link.
*/
struct link_ref {
  struct Blob id;     /* must be the first field as in footnote struct */
  struct Blob link;
  struct Blob title;
};

/*
** A footnote's data.
** id, text, and upc fields must be in that particular order.
*/
struct footnote {
  struct Blob id;      /* must be the first field as in link_ref struct  */
  struct Blob text;    /* footnote's content that is rendered at the end */
  struct Blob upc;     /* user-provided classes  .ASCII-alnum.or-hypen:  */
  int bRndred;         /* indicates if `text` holds a rendered content   */

  int defno;  /* serial number of definition, set during the first pass  */
  int index;  /* set to the index within array after ordering by id      */
  int iMark;  /* user-visible numeric marker, assigned upon the first use*/
  int nUsed;  /* counts references to this note, increments upon each use*/
};
#define FOOTNOTE_INITIALIZER {empty_blob,empty_blob,empty_blob, 0,0,0,0,0}

/* char_trigger -- function pointer to render active chars */
/*   returns the number of chars taken care of */
/*   data is the pointer of the beginning of the span */
/*   offset is the number of valid chars before data */
struct render;
typedef size_t (*char_trigger)(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size);


/* render -- structure containing one particular render */
struct render {
  struct mkd_renderer make;
  struct Blob refs;
  char_trigger active_char[256];
  int iDepth;                    /* Depth of recursion */
  int nBlobCache;                /* Number of entries in aBlobCache */
  struct Blob *aBlobCache[20];   /* Cache of Blobs available for reuse */

  struct {
    Blob all;    /* Buffer that holds array of footnotes. Its underline
                    memory may be reallocated when a new footnote is added. */
    int nLbled;  /* number of labeled footnotes found during the first pass */
    int nMarks;  /* counts distinct indices found during the second pass    */
    struct footnote misref; /* nUsed counts misreferences, iMark must be -1 */
  } notes;
};

/* html_tag -- structure for quick HTML tag search (inspired from discount) */
struct html_tag {
  const char *text;
  int size;
};



/********************
 * GLOBAL VARIABLES *
 ********************/

/* block_tags -- recognised block tags, sorted by cmp_html_tag.
**
** When these HTML tags are separated from other text by newlines
** then they are rendered verbatim.  Their content is not interpreted
** in any way.
*/
static const struct html_tag block_tags[] = {
  { "html",         4 },
  { "pre",          3 },
  { "script",       6 },
};

/***************************
 * STATIC HELPER FUNCTIONS *
 ***************************/

/*
** build_ref_id -- collapse whitespace from input text to make it a ref id.
** Potential TODO: maybe also handle CR+LF line endings?
*/
static int build_ref_id(struct Blob *id, const char *data, size_t size){
  size_t beg, i;
  char *id_data;

  /* skip leading whitespace */
  while( size>0 && (data[0]==' ' || data[0]=='\t' || data[0]=='\n') ){
    data++;
    size--;
  }

  /* skip trailing whitespace */
  while( size>0 && (data[size-1]==' '
   || data[size-1]=='\t'
   || data[size-1]=='\n')
  ){
    size--;
  }
  if( size==0 ) return -1;

  /* making the ref id */
  i = 0;
  blob_reset(id);
  while( i<size ){
    /* copy non-whitespace into the output buffer */
    beg = i;
    while( i<size && !(data[i]==' ' || data[i]=='\t' || data[i]=='\n') ){
      i++;
    }
    blob_append(id, data+beg, i-beg);

    /* add a single space and skip all consecutive whitespace */
    if( i<size ) blob_append_char(id, ' ');
    while( i<size && (data[i]==' ' || data[i]=='\t' || data[i]=='\n') ){ i++; }
  }

  /* turn upper-case ASCII into their lower-case counterparts */
  id_data = blob_buffer(id);
  for(i=0; i<blob_size(id); i++){
    if( id_data[i]>='A' && id_data[i]<='Z' ) id_data[i] += 'a' - 'A';
  }
  return 0;
}


/* cmp_link_ref -- comparison function for link_ref sorted arrays */
static int cmp_link_ref(const void *key, const void *array_entry){
  struct link_ref *lr = (void *)array_entry;
  return blob_compare((void *)key, &lr->id);
}


/* cmp_link_ref_sort -- comparison function for link_ref qsort */
static int cmp_link_ref_sort(const void *a, const void *b){
  struct link_ref *lra = (void *)a;
  struct link_ref *lrb = (void *)b;
  return blob_compare(&lra->id, &lrb->id);
}

/*
** cmp_footnote_id -- comparison function for footnotes qsort.
** Empty IDs sort last (in undetermined order).
** Equal IDs are sorted in the order of definition in the source.
*/
static int cmp_footnote_id(const void *fna, const void *fnb){
  const struct footnote *a = fna, *b = fnb;
  const int szA = blob_size(&a->id), szB = blob_size(&b->id);
  if( szA ){
    if( szB ){
      int cmp = blob_compare(&a->id, &b->id);
      if( cmp ) return cmp;
    }else return -1;
  }else return szB ? 1 : 0;
  /* IDs are equal and non-empty */
  if( a->defno < b->defno ) return -1;
  if( a->defno > b->defno ) return  1;
  assert(!"reachable");
  return 0; /* should never reach here */
}

/*
** cmp_footnote_sort -- comparison function for footnotes qsort.
** Unreferenced footnotes (when nUsed == 0) sort last and
** are sorted in the order of definition in the source.
*/
static int cmp_footnote_sort(const void *fna, const void *fnb){
  const struct footnote *a = fna, *b = fnb;
  int i, j;
  assert( a->nUsed >= 0 );
  assert( b->nUsed >= 0 );
  assert( a->defno >= 0 );
  assert( b->defno >= 0 );
  if( a->nUsed ){
    assert( a->iMark >  0 );
    if( !b->nUsed ) return -1;
    assert( b->iMark >  0 );
    i = a->iMark;
    j = b->iMark;
  }else{
    if( b->nUsed )  return  1;
    i = a->defno;
    j = b->defno;
  }
  if( i < j ) return -1;
  if( i > j ) return  1;
  return 0;
}

/* cmp_html_tag -- comparison function for bsearch() (stolen from discount) */
static int cmp_html_tag(const void *a, const void *b){
  const struct html_tag *hta = a;
  const struct html_tag *htb = b;
  int sz = hta->size;
  int c;
  if( htb->size<sz ) sz = htb->size;
  c = fossil_strnicmp(hta->text, htb->text, sz);
  if( c==0 ) c = hta->size - htb->size;
  return c;
}


/* find_block_tag -- returns the current block tag */
static const struct html_tag *find_block_tag(const char *data, size_t size){
  size_t i = 0;
  struct html_tag key;

  /* looking for the word end */
  while( i<size
   && ((data[i]>='0' && data[i]<='9')
       || (data[i]>='A' && data[i]<='Z')
       || (data[i]>='a' && data[i]<='z'))
  ){
    i++;
  }
  if( i>=size ) return 0;

  /* binary search of the tag */
  key.text = data;
  key.size = i;
  return bsearch(&key,
                 block_tags,
                 count(block_tags),
                 sizeof block_tags[0],
                 cmp_html_tag);
}

/* return true if recursion has gone too deep */
static int too_deep(struct render *rndr){
  return rndr->iDepth>200;
}

/* get a new working buffer from the cache or create one.  return NULL
** if failIfDeep is true and the depth of recursion has gone too deep. */
static struct Blob *new_work_buffer(struct render *rndr){
  struct Blob *ret;
  rndr->iDepth++;
  if( rndr->nBlobCache ){
    ret = rndr->aBlobCache[--rndr->nBlobCache];
  }else{
    ret = fossil_malloc(sizeof(*ret));
  }
  *ret = empty_blob;
  return ret;
}


/* release the given working buffer back to the cache */
static void release_work_buffer(struct render *rndr, struct Blob *buf){
  if( !buf ) return;
  rndr->iDepth--;
  blob_reset(buf);
  if( rndr->nBlobCache <
        (int)(sizeof(rndr->aBlobCache)/sizeof(rndr->aBlobCache[0])) ){
    rndr->aBlobCache[rndr->nBlobCache++] = buf;
  }else{
    fossil_free(buf);
  }
}



/****************************
 * INLINE PARSING FUNCTIONS *
 ****************************/

/* is_mail_autolink -- looks for the address part of a mail autolink and '>' */
/* this is less strict than the original markdown e-mail address matching */
static size_t is_mail_autolink(char *data, size_t size){
  size_t i = 0, nb = 0;
  /* address is assumed to be: [-@._a-zA-Z0-9]+ with exactly one '@' */
  while( i<size && (data[i]=='-'
   || data[i]=='.'
   || data[i]=='_'
   || data[i]=='@'
   || (data[i]>='a' && data[i]<='z')
   || (data[i]>='A' && data[i]<='Z')
   || (data[i]>='0' && data[i]<='9'))
  ){
    if( data[i]=='@' ) nb++;
    i++;
  }
  if( i>=size || data[i]!='>' || nb!=1 ) return 0;
  return i+1;
}


/* tag_length -- returns the length of the given tag, or 0 if it's not valid */
static size_t tag_length(char *data, size_t size, enum mkd_autolink *autolink){
  size_t i, j;

  /* a valid tag can't be shorter than 3 chars */
  if( size<3 ) return 0;

  /* begins with a '<' optionally followed by '/', followed by letter */
  if( data[0]!='<' ) return 0;
  i = (data[1]=='/') ? 2 : 1;
  if( (data[i]<'a' || data[i]>'z') &&  (data[i]<'A' || data[i]>'Z') ){
    if( data[1]=='!' && size>=7 && data[2]=='-' && data[3]=='-' ){
      for(i=6; i<size && (data[i]!='>'||data[i-1]!='-'|| data[i-2]!='-');i++){}
      if( i<size ) return i;
    }
    return 0;
  }

  /* scheme test */
  *autolink = MKDA_NOT_AUTOLINK;
  if( size>6
   && fossil_strnicmp(data+1, "http", 4)==0
   && (data[5]==':'
       || ((data[5]=='s' || data[5]=='S') && data[6]==':'))
  ){
    i = (data[5]==':') ? 6 : 7;
    *autolink = MKDA_NORMAL;
  }else if( size>5 && fossil_strnicmp(data+1, "ftp:", 4)==0 ){
    i = 5;
    *autolink = MKDA_NORMAL;
  }else if( size>7 && fossil_strnicmp(data+1, "mailto:", 7)==0 ){
    i = 8;
    /* not changing *autolink to go to the address test */
   }

  /* completing autolink test: no whitespace or ' or " */
  if( i>=size || i=='>' ){
    *autolink = MKDA_NOT_AUTOLINK;
  }else if( *autolink ){
    j = i;
    while( i<size
     && data[i]!='>'
     && data[i]!='\''
     && data[i]!='"'
     && data[i]!=' '
     && data[i]!='\t'
     && data[i]!='\n'
    ){
      i++;
    }
    if( i>=size ) return 0;
    if( i>j && data[i]=='>' ) return i+1;
    /* one of the forbidden chars has been found */
    *autolink = MKDA_NOT_AUTOLINK;
  }else if( (j = is_mail_autolink(data+i, size-i))!=0 ){
    *autolink = (i==8) ? MKDA_EXPLICIT_EMAIL : MKDA_IMPLICIT_EMAIL;
    return i+j;
  }

  /* looking for something looking like a tag end */
  while( i<size && data[i]!='>' ){ i++; }
  if( i>=size ) return 0;
  return i+1;
}


/* parse_inline -- parses inline markdown elements */
static void parse_inline(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  size_t i = 0, end = 0;
  char_trigger action = 0;
  struct Blob work = BLOB_INITIALIZER;

  if( too_deep(rndr) ){
    blob_append(ob, data, size);
    return;
  }
  while( i<size ){
    /* copying inactive chars into the output */
    while( end<size
     && (action = rndr->active_char[(unsigned char)data[end]])==0
    ){
      end++;
    }
    if( end>i ){
      if( rndr->make.normal_text ){
        blob_init(&work, data+i, end-i);
        rndr->make.normal_text(ob, &work, rndr->make.opaque);
      }else{
        blob_append(ob, data+i, end-i);
      }
    }
    if( end>=size ) break;
    i = end;

    /* calling the trigger */
    end = action(ob, rndr, data+i, i, size-i);
    if( !end ){
      /* no action from the callback */
      end = i+1;
    }else{
      i += end;
      end = i;
    }
  }
}

/*
** data[*pI] should be a "`" character that introduces a code-span.
** The code-span boundry mark can be any number of one or more "`"
** characters.  We do not know the size of the boundry marker, only
** that there is at least one "`" at data[*pI].
**
** This routine increases *pI to move it past the code-span, including
** the closing boundary mark.  Or, if the code-span is unterminated,
** this routine moves *pI past the opening boundary mark only.
*/
static void skip_codespan(const char *data, size_t size, size_t *pI){
  size_t i = *pI;
  size_t span_nb;   /* Number of "`" characters in the boundary mark */
  size_t bt;

  assert( i<size );
  assert( data[i]=='`' );
  data += i;
  size -= i;

  /* counting the number of opening backticks */
  i = 0;
  span_nb = 0;
  while( i<size && data[i]=='`' ){
    i++;
    span_nb++;
  }
  if( i>=size ){
    *pI += span_nb;
    return;
  }

  /* finding the matching closing sequence */
  bt = 0;
  while( i<size && bt<span_nb ){
    if( data[i]=='`' ) bt += 1; else bt = 0;
    i++;
  }
  *pI += (bt == span_nb) ? i : span_nb;
}


/* find_emph_char -- looks for the next emph char, skipping other constructs */
static size_t find_emph_char(char *data, size_t size, char c){
  size_t i = data[0]!='`';

  while( i<size ){
    while( i<size && data[i]!=c && data[i]!='`' && data[i]!='[' ){ i++; }
    if( i>=size ) return 0;

    /* not counting escaped chars */
    if( i && data[i-1]=='\\' ){
      i++;
      continue;
    }

    if( data[i]==c ) return i;

    if( data[i]=='`' ){            /* skip a code span */
      skip_codespan(data, size, &i);
    }else if( data[i]=='[' ){      /* skip a link */
      size_t tmp_i = 0;
      char cc;
      i++;
      while( i<size && data[i]!=']' ){
        if( !tmp_i && data[i]==c ) tmp_i = i;
        i++;
      }
      i++;
      while( i<size && (data[i]==' ' || data[i]=='\t' || data[i]=='\n') ){
        i++;
      }
      if( i>=size ) return tmp_i;
      if( data[i]!='[' && data[i]!='(' ){ /* not a link*/
        if( tmp_i ) return tmp_i; else continue;
      }
      cc = data[i];
      i++;
      while( i<size && data[i]!=cc ){
        if( !tmp_i && data[i]==c ) tmp_i = i;
        i++;
      }
      if( i>=size ) return tmp_i;
      i++;
    }
  }
  return 0;
}

/* CommonMark defines separate "right-flanking" and "left-flanking"
** deliminators for emphasis.  Whether a deliminator is left- or
** right-flanking, or both, or neither depends on the characters
** immediately before and after.
**
**   before   after   example    left-flanking   right-flanking
**   ------   -----   -------    -------------   --------------
**    space   space      *            no              no
**    space   punct      *)          yes              no
**    space   alnum      *x          yes              no
**    punct   space     (*            no             yes
**    punct   punct     (*)          yes             yes
**    punct   alnum     (*x          yes              no
**    alnum   space     a*            no             yes
**    alnum   punct     a*(           no             yes
**    alnum   alnum     a*x          yes             yes
**
** The following routines determine whether a delimitor is left
** or right flanking.
*/
static int left_flanking(char before, char after){
  if( fossil_isspace(after) ) return 0;
  if( fossil_isalnum(after) ) return 1;
  if( fossil_isalnum(before) ) return 0;
  return 1;
}
static int right_flanking(char before, char after){
  if( fossil_isspace(before) ) return 0;
  if( fossil_isalnum(before) ) return 1;
  if( fossil_isalnum(after) ) return 0;
  return 1;
}


/*
** parse_emph1 -- parsing single emphasis.
** closed by a symbol not preceded by whitespace and not followed by symbol.
*/
static size_t parse_emph1(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size,
  char c
){
  size_t i = 0, len;
  struct Blob *work = 0;
  int r;
  char after;

  if( !rndr->make.emphasis ) return 0;

  /* skipping one symbol if coming from emph3 */
  if( size>1 && data[0]==c && data[1]==c ) i = 1;

  while( i<size ){
    len = find_emph_char(data+i, size-i, c);
    if( !len ) return 0;
    i += len;
    if( i>=size ) return 0;

    if( i+1<size && data[i+1]==c ){
      i++;
      continue;
    }
    after = i+1<size ? data[i+1] : ' ';
    if( data[i]==c
     && right_flanking(data[i-1],after)
     && (c!='_' || !fossil_isalnum(after))
     && !too_deep(rndr)
    ){
      work = new_work_buffer(rndr);
      parse_inline(work, rndr, data, i);
      r = rndr->make.emphasis(ob, work, c, rndr->make.opaque);
      release_work_buffer(rndr, work);
      return r ? i+1 : 0;
    }
  }
  return 0;
}

/*
** parse_emph2 -- parsing single emphasis.
*/
static size_t parse_emph2(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size,
  char c
){
  size_t i = 0, len;
  struct Blob *work = 0;
  int r;
  char after;

  if( !rndr->make.double_emphasis ) return 0;

  while( i<size ){
    len = find_emph_char(data+i, size-i, c);
    if( !len ) return 0;
    i += len;
    after = i+2<size ? data[i+2] : ' ';
    if( i+1<size
     && data[i]==c
     && data[i+1]==c
     && right_flanking(data[i-1],after)
     && (c!='_' || !fossil_isalnum(after))
     && !too_deep(rndr)
    ){
      work = new_work_buffer(rndr);
      parse_inline(work, rndr, data, i);
      r = rndr->make.double_emphasis(ob, work, c, rndr->make.opaque);
      release_work_buffer(rndr, work);
      return r ? i+2 : 0;
    }
    i++;
  }
  return 0;
}

/*
** parse_emph3 -- parsing single emphasis.
** finds the first closing tag, and delegates to the other emph.
*/
static size_t parse_emph3(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size,
  char c
){
  size_t i = 0, len;
  int r;

  while( i<size ){
    len = find_emph_char(data+i, size-i, c);
    if( !len ) return 0;
    i += len;

    /* skip whitespace preceded symbols */
    if( data[i]!=c || data[i-1]==' ' || data[i-1]=='\t' || data[i-1]=='\n' ){
      continue;
    }

    if( i+2<size
     && data[i+1]==c
     && data[i+2] == c
     && rndr->make.triple_emphasis
     && !too_deep(rndr)
    ){
      /* triple symbol found */
      struct Blob *work = new_work_buffer(rndr);
      parse_inline(work, rndr, data, i);
      r = rndr->make.triple_emphasis(ob, work, c, rndr->make.opaque);
      release_work_buffer(rndr, work);
      return r ? i+3 : 0;
    }else if( i+1<size && data[i+1]==c ){
      /* double symbol found, handing over to emph1 */
      len = parse_emph1(ob, rndr, data-2, size+2, c);
      return len ? len-2 : 0;
    }else{
      /* single symbol found, handing over to emph2 */
      len = parse_emph2(ob, rndr, data-1, size+1, c);
      return len ? len-1 : 0;
    }
  }
  return 0;
}

/*
** char_emphasis -- single and double emphasis parsing.
*/
static size_t char_emphasis(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  char c = data[0];
  char before = offset>0 ? data[-1] : ' ';
  size_t ret;

  if( size>2 && data[1]!=c ){
    if( !left_flanking(before, data[1])
     || (c=='_' && fossil_isalnum(before))
     || (ret = parse_emph1(ob, rndr, data+1, size-1, c))==0
    ){
      return 0;
    }
    return ret+1;
  }

  if( size>3 && data[1]==c && data[2]!=c ){
    if( !left_flanking(before, data[2])
     || (c=='_' && fossil_isalnum(before))
     || (ret = parse_emph2(ob, rndr, data+2, size-2, c))==0
    ){
      return 0;
    }
    return ret+2;
  }

  if( size>4 && data[1]==c && data[2]==c && data[3]!=c ){
    if( !left_flanking(before, data[3])
     || (c=='_' && fossil_isalnum(before))
     || (ret = parse_emph3(ob, rndr, data+3, size-3, c))==0
    ){
      return 0;
    }
    return ret+3;
  }
  return 0;
}

/*
** char_linebreak -- '\n' preceded by two spaces (assuming linebreak != 0).
*/
static size_t char_linebreak(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  if( offset<2 || data[-1]!=' ' || data[-2]!=' ' ) return 0;
  /* removing the last space from ob and rendering */
  if( blob_size(ob)>0 && blob_buffer(ob)[blob_size(ob)-1]==' ' ) ob->nUsed--;
  return rndr->make.linebreak(ob, rndr->make.opaque) ? 1 : 0;
}

/*
** char_codespan -- '`' parsing a code span (assuming codespan != 0).
*/
static size_t char_codespan(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  size_t end, nb = 0, i, f_begin, f_end;
  char delim = data[0];

  /* counting the number of backticks in the delimiter */
  while( nb<size && data[nb]==delim ){ nb++; }

  /* finding the next delimiter */
  i = 0;
  for(end=nb; end<size && i<nb; end++){
    if( data[end]==delim ) i++; else i = 0;
  }
  if( i<nb && end>=size ) return 0; /* no matching delimiter */

  /* trimming outside whitespaces */
  f_begin = nb;
  while( f_begin<end && (data[f_begin]==' ' || data[f_begin]=='\t') ){
    f_begin++;
  }
  f_end = end-nb;
  while( f_end>nb && (data[f_end-1]==' ' || data[f_end-1]=='\t') ){ f_end--; }

  /* real code span */
  if( f_begin<f_end ){
    struct Blob work = BLOB_INITIALIZER;
    blob_init(&work, data+f_begin, f_end-f_begin);
    if( !rndr->make.codespan(ob, &work, nb, rndr->make.opaque) ) end = 0;
  }else{
    if( !rndr->make.codespan(ob, 0, nb, rndr->make.opaque) ) end = 0;
  }
  return end;
}


/*
** char_escape -- '\\' backslash escape.
*/
static size_t char_escape(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  struct Blob work = BLOB_INITIALIZER;
  if( size>1 ){
    if( rndr->make.normal_text ){
      blob_init(&work, data+1,1);
      rndr->make.normal_text(ob, &work, rndr->make.opaque);
    }else{
      blob_append(ob, data+1, 1);
    }
  }
  return 2;
}

/*
** char_entity -- '&' escaped when it doesn't belong to an entity.
** valid entities are assumed to be anything matching &#?[A-Za-z0-9]+;
*/
static size_t char_entity(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  size_t end = 1;
  struct Blob work = BLOB_INITIALIZER;
  if( end<size && data[end]=='#' ) end++;
  while( end<size
   && ((data[end]>='0' && data[end]<='9')
       || (data[end]>='a' && data[end]<='z')
       || (data[end]>='A' && data[end]<='Z'))
  ){
    end++;
  }
  if( end<size && data[end]==';' ){
    /* real entity */
    end++;
  }else{
    /* lone '&' */
    return 0;
  }
  if( rndr->make.entity ){
    blob_init(&work, data, end);
    rndr->make.entity(ob, &work, rndr->make.opaque);
  }else{
    blob_append(ob, data, end);
  }
  return end;
}

/*
** char_langle_tag -- '<' when tags or autolinks are allowed.
*/
static size_t char_langle_tag(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  enum mkd_autolink altype = MKDA_NOT_AUTOLINK;
  size_t end = tag_length(data, size, &altype);
  struct Blob work = BLOB_INITIALIZER;
  int ret = 0;
  if( end ){
    if( rndr->make.autolink && altype!=MKDA_NOT_AUTOLINK ){
      blob_init(&work, data+1, end-2);
      ret = rndr->make.autolink(ob, &work, altype, rndr->make.opaque);
    }else if( rndr->make.raw_html_tag ){
      blob_init(&work, data, end);
      ret = rndr->make.raw_html_tag(ob, &work, rndr->make.opaque);
    }
  }

  if( !ret ){
    return 0;
  }else{
    return end;
  }
}

/*
** get_link_inline -- extract inline-style link and title from
** parenthesed data
*/
static int get_link_inline(
  struct Blob *link,
  struct Blob *title,
  char *data,
  size_t size
){
  size_t i = 0, mark;
  size_t link_b, link_e;
  size_t title_b = 0, title_e = 0;

  /* skipping initial whitespace */
  while( i<size && (data[i]==' ' || data[i]=='\t' || data[i]=='\n') ){ i++; }
  link_b = i;

  /* looking for link end: ' " */
  while( i<size && data[i]!='\'' && data[i]!='"' ){ i++; }
  link_e = i;

  /* looking for title end if present */
  if( data[i]=='\'' || data[i]=='"' ){
    i++;
    title_b = i;

    /* skipping whitespaces after title */
    title_e = size-1;
    while( title_e>title_b
     && (data[title_e]==' '
         || data[title_e]=='\t'
         || data[title_e]=='\n')
    ){
      title_e--;
    }

    /* checking for closing quote presence */
    if (data[title_e] != '\'' &&  data[title_e] != '"') {
      title_b = title_e = 0;
      link_e = i;
    }
  }

  /* remove whitespace at the end of the link */
  while( link_e>link_b
   && (data[link_e-1]==' '
       || data[link_e-1]=='\t'
       || data[link_e-1]=='\n')
  ){
    link_e--;
  }

  /* remove optional angle brackets around the link */
  if( data[link_b]=='<' ) link_b += 1;
  if( link_e && data[link_e-1]=='>' ) link_e -= 1;

  /* escape backslashed character from link */
  blob_reset(link);
  i = link_b;
  while( i<link_e ){
    mark = i;
    while( i<link_e && data[i]!='\\' ){ i++; }
    blob_append(link, data+mark, i-mark);
    while( i<link_e && data[i]=='\\' ){ i++; }
  }

  /* handing back title */
  blob_reset(title);
  if( title_e>title_b ) blob_append(title, data+title_b, title_e-title_b);

  /* this function always succeed */
  return 0;
}


/*
** get_link_ref -- extract referenced link and title from id.
*/
static int get_link_ref(
  struct render *rndr,
  struct Blob *link,
  struct Blob *title,
  char *data,
  size_t size
){
  struct link_ref *lr;
  const size_t sz = blob_size(&rndr->refs);

  /* find the link from its id (stored temporarily in link) */
  blob_reset(link);
  if( !sz || build_ref_id(link, data, size)<0 ) return -1;
  lr = bsearch(link,
               blob_buffer(&rndr->refs),
               sz/sizeof(struct link_ref),
               sizeof (struct link_ref),
               cmp_link_ref);
  if( !lr ) return -1;

  /* fill the output buffers */
  blob_reset(link);
  blob_reset(title);
  blob_appendb(link, &lr->link);
  blob_appendb(title, &lr->title);
  return 0;
}

/*
** get_footnote() -- find a footnote by label, invoked during the 2nd pass.
** If found then return a shallow copy of the corresponding footnote;
** otherwise return a shallow copy of rndr->notes.misref.
** In both cases corresponding `nUsed` field is incremented before return.
*/
static struct footnote get_footnote(
  struct render *rndr,
  const char *data,
  size_t size
){
  struct footnote *fn = 0;
  struct Blob *id;
  if( !rndr->notes.nLbled ) goto fallback;
  id = new_work_buffer(rndr);
  if( build_ref_id(id, data, size)<0 ) goto cleanup;
  fn = bsearch(id, blob_buffer(&rndr->notes.all),
               rndr->notes.nLbled,
               sizeof (struct footnote),
               cmp_link_ref);
  if( !fn ) goto cleanup;

  if( fn->nUsed == 0 ){  /* the first reference to the footnote */
    assert( fn->iMark == 0 );
    fn->iMark = ++(rndr->notes.nMarks);
  }
  assert( fn->iMark > 0 );
cleanup:
  release_work_buffer( rndr, id );
fallback:
  if( !fn ) fn = &rndr->notes.misref;
  fn->nUsed++;
  assert( fn->nUsed > 0 );
  return *fn;
}

/*
** Counts characters in the blank prefix within at most nHalfLines.
** A sequence of spaces and tabs counts as odd halfline,
** a newline counts as even halfline.
** If nHalfLines < 0 then proceed without constraints.
*/
static inline size_t sizeof_blank_prefix(
  const char *data, size_t size, int nHalfLines
){
  const char *p = data;
  const char * const end = data+size;
  if( nHalfLines < 0 ){
    while( p!=end && fossil_isspace(*p) ){
      p++;
    }
  }else while( nHalfLines > 0 ){
    while( p!=end && (*p==' ' || *p=='\t' ) ){ p++; }
    if( p==end || --nHalfLines == 0 ) break;
    if( *p=='\n' || *p=='\r' ){
      p++;
      if( p==end ) break;
      if( *p=='\n' && p[-1]=='\r' ){
        p++;
      }
    }
    nHalfLines--;
  }
  return p-data;
}

/*
** Check if the data starts with a classlist token of the special form.
** If so then return the length of that token, otherwise return 0.
**
** The token must start with a dot and must end with a colon;
** in between of these it must be a dot-separated list of words;
** each word may contain only alphanumeric characters and hyphens.
**
** If `bBlank` is non-zero then a blank character must follow
** the token's ending colon: otherwise function returns 0
** despite the well-formed token.
*/
static size_t is_footnote_classlist(const char * const data, size_t size,
                                    int bBlank){
  const char *p;
  const char * const end = data+size;
  if( data==end || *data != '.' ) return 0;
  for(p=data+1; p!=end; p++){
    if( fossil_isalnum(*p) || *p=='-' ) continue;
    if( p[-1]=='.' ) break;
    if( *p==':' ){
      p++;
      if( bBlank ){
        if( p==end || !fossil_isspace(*p) ) break;
      }
      return p-data;
    }
    if( *p!='.' ) break;
  }
  return 0;
}

/*
** Adds unlabeled footnote to the rndr->notes.all.
** On success puts a shallow copy of the constructed footnote into pFN
** and returns 1, otherwise pFN is unchanged and 0 is returned.
*/
static inline int add_inline_footnote(
  struct render *rndr,
  const char *text,
  size_t size,
  struct footnote* pFN
){
  struct footnote fn = FOOTNOTE_INITIALIZER, *last;
  const char *zUPC = 0;
  size_t nUPC = 0, n = sizeof_blank_prefix(text, size, 3);
  if( n >= size ) return 0;
  text += n;
  size -= n;
  nUPC = is_footnote_classlist(text, size, 1);
  if( nUPC ){
    assert( nUPC<size );
    zUPC = text;
    text += nUPC;
    size -= nUPC;
  }
  if( sizeof_blank_prefix(text,size,-1)==size ){
    if( !nUPC ) return 0; /* empty inline footnote */
    text = zUPC;
    size = nUPC;          /* bare classlist is treated */
    nUPC = 0;             /* as plain text */
  }
  fn.iMark = ++(rndr->notes.nMarks);
  fn.nUsed  = 1;
  fn.index  = COUNT_FOOTNOTES(&rndr->notes.all);
  assert( fn.iMark > 0 );
  blob_append(&fn.text, text, size);
  if(nUPC) blob_append(&fn.upc, zUPC, nUPC);
  blob_append(&rndr->notes.all, (char *)&fn, sizeof fn);
  last = (struct footnote*)( blob_buffer(&rndr->notes.all)
                            +( blob_size(&rndr->notes.all)-sizeof fn ));
  assert( pFN );
  memcpy( pFN, last, sizeof fn );
  return 1;
}

/*
** Return the byte offset of the matching closing bracket or 0 if not
** found.  begin[0] must be either '[' or '('.
**
** TODO: It seems that things like "\\(" are not handled correctly.
**       That is historical behavior for a corner-case,
**       so it's left as it is until somebody complains.
*/
static inline size_t matching_bracket_offset(
  const char* begin,
  const char* end
){
  const char *i;
  int level;
  const char bra = *begin;
  const char ket = bra=='[' ? ']' : ')';
  assert( bra=='[' || bra=='(' );
  for(i=begin+1,level=1; i!=end; i++){
    if( *i=='\n' )        /* do nothing */;
    else if( i[-1]=='\\' ) continue;
    else if( *i==bra )     level++;
    else if( *i==ket ){
      if( --level<=0 ) return i-begin;
    }
  }
  return 0;
}

/*
** char_footnote -- '(': parsing a standalone inline footnote.
*/
static size_t char_footnote(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size
){
  size_t end;
  struct footnote fn;

  if( size<4 || data[1]!='^' ) return 0;
  end = matching_bracket_offset(data, data+size);
  if( !end ) return 0;
  if( !add_inline_footnote(rndr, data+2, end-2, &fn) ) return 0;
  if( rndr->make.footnote_ref ){
    rndr->make.footnote_ref(ob,0,&fn.upc,fn.iMark,1,rndr->make.opaque);
  }
  return end+1;
}

/*
** char_link -- '[': parsing a link or an image.
*/
static size_t char_link(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t offset,
  size_t size     /* parse_inline() ensures that size > 0 */
){
  const int bFsfn = (size>3 && data[1]=='^'); /*free-standing footnote ref*/
  const int bImg = !bFsfn && (offset && data[-1] == '!');
  size_t i, txt_e;
  struct Blob *content;
  struct Blob *link;
  struct Blob *title;
  struct footnote fn;
  int ret;

  /* checking whether the correct renderer exists */
  if( !bFsfn ){
    if( (bImg && !rndr->make.image) || (!bImg && !rndr->make.link) ){
      return 0;
    }
  }

  /* looking for the matching closing bracket */
  txt_e = matching_bracket_offset(data, data+size);
  if( !txt_e ) return 0;
  i = txt_e + 1;
  ret = 0; /* error if we don't get to the callback */

  /* free-standing footnote reference */
  if( bFsfn ){
    fn = get_footnote(rndr, data+2, txt_e-2);
    content = link = title = 0;
  }else{
    fn.nUsed = 0;

    /* skip "inter-bracket-whitespace" - any amount of whitespace or newline */
    /* (this is much more lax than original markdown syntax) */
    while( i<size && (data[i]==' ' || data[i]=='\t' || data[i]=='\n') ){ i++; }

    /* allocate temporary buffers to store content, link and title */
    title = new_work_buffer(rndr);
    content = new_work_buffer(rndr);
    link = new_work_buffer(rndr);

    if( i<size && data[i]=='(' ){

      if( i+2<size && data[i+1]=='^' ){  /* span-bounded inline footnote */

        const size_t k = matching_bracket_offset(data+i, data+size);
        if( !k ) goto char_link_cleanup;
        add_inline_footnote(rndr, data+(i+2), k-2, &fn);
        i += k+1;
      }else{                             /* inline style link  */
        size_t span_end = i;
        while( span_end<size
               && !(data[span_end]==')'
                    && (span_end==i || data[span_end-1]!='\\')) ){
          span_end++;
        }
        if( span_end>=size
            || get_link_inline(link, title, data+i+1, span_end-(i+1))<0 ){
          goto char_link_cleanup;
        }
        i = span_end+1;
      }
    /* reference style link or span-bounded footnote reference */
    }else if( i<size && data[i]=='[' ){
      char *id_data;
      size_t id_size, id_end = i;
      int bFootnote;

      while( id_end<size && data[id_end]!=']' ){ id_end++; }
      if( id_end>=size ) goto char_link_cleanup;
      bFootnote = data[i+1]=='^';
      if( i+1==id_end || (bFootnote && i+2==id_end) ){
        /* implicit id - use the contents */
        id_data = data+1;
        id_size = txt_e-1;
      }else{
        /* explicit id - between brackets */
        id_data = data+i+1;
        id_size = id_end-(i+1);
        if( bFootnote ){
          id_data++;
          id_size--;
        }
      }
      if( bFootnote ){
        fn = get_footnote(rndr, id_data, id_size);
      }else if( get_link_ref(rndr, link, title, id_data, id_size)<0 ){
        goto char_link_cleanup;
      }
      i = id_end+1;
    /* shortcut reference style link */
    }else{
      if( get_link_ref(rndr, link, title, data+1, txt_e-1)<0 ){
        goto char_link_cleanup;
      }
      /* rewinding an "inter-bracket-whitespace" */
      i = txt_e+1;
    }
  }
  /* building content: img alt is escaped, link content is parsed */
  if( txt_e>1 && content ){
    if( bImg ) blob_append(content, data+1, txt_e-1);
    else parse_inline(content, rndr, data+1, txt_e-1);
  }

  /* calling the relevant rendering function */
  if( bImg ){
    if( blob_size(ob)>0 && blob_buffer(ob)[blob_size(ob)-1]=='!' ){
      ob->nUsed--;
    }
    ret = rndr->make.image(ob, link, title, content, rndr->make.opaque);
  }else if( fn.nUsed ){
    if( rndr->make.footnote_ref ){
      ret = rndr->make.footnote_ref(ob, content, &fn.upc, fn.iMark,
                                    fn.nUsed, rndr->make.opaque);
    }
  }else{
    ret = rndr->make.link(ob, link, title, content, rndr->make.opaque);
  }

  /* cleanup */
char_link_cleanup:
  release_work_buffer(rndr, title);
  release_work_buffer(rndr, link);
  release_work_buffer(rndr, content);
  return ret ? i : 0;
}


/*********************************
 * BLOCK-LEVEL PARSING FUNCTIONS *
 *********************************/

/* is_empty -- returns the line length when it is empty, 0 otherwise */
static size_t is_empty(const char *data, size_t size){
  size_t i;
  for(i=0; i<size && data[i]!='\n'; i++){
    if( data[i]!=' ' && data[i]!='\t' ) return 0;
  }
  return i+1;
}


/* is_hrule -- returns whether a line is a horizontal rule */
static int is_hrule(char *data, size_t size){
  size_t i = 0, n = 0;
  char c;

  /* skipping initial spaces */
  if( size<3 ) return 0;
  if( data[0]==' ' ){
    i++;
    if( data[1]==' ' ){
      i++;
       if( data[2]==' ' ){
         i++;
       }
     }
   }

  /* looking at the hrule char */
  if( i+2>=size || (data[i]!='*' && data[i]!='-' && data[i]!='_') ) return 0;
  c = data[i];

  /* the whole line must be the char or whitespace */
  while (i < size && data[i] != '\n') {
    if( data[i]==c ){
      n += 1;
    }else if( data[i]!=' ' && data[i]!='\t' ){
      return 0;
    }
    i++;
  }

  return n>=3;
}


/* is_headerline -- returns whether the line is a setext-style hdr underline */
static int is_headerline(char *data, size_t size){
  size_t i = 0;

  /* test of level 1 header */
  if( data[i]=='=' ){
    for(i=1; i<size && data[i]=='='; i++);
    while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
    return (i>=size || data[i]=='\n') ? 1 : 0;
  }

  /* test of level 2 header */
  if( data[i]=='-' ){
    for(i=1; i<size && data[i]=='-'; i++);
    while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
    return (i>=size || data[i]=='\n') ? 2 : 0;
  }

  return 0;
}


/* is_table_sep -- returns whether there is a table separator at pos */
static int is_table_sep(char *data, size_t pos){
  return data[pos]=='|' && (pos==0 || data[pos-1]!='\\');
}


/* is_tableline -- returns the number of column tables in the given line */
static int is_tableline(char *data, size_t size){
  size_t i = 0;
  int n_sep = 0, outer_sep = 0;

  /* skip initial blanks */
  while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }

  /* check for initial '|' */
  if( i<size && data[i]=='|') outer_sep++;

  /* count the number of pipes in the line */
  for(n_sep=0; i<size && data[i]!='\n'; i++){
    if( is_table_sep(data, i) ) n_sep++;
    if( data[i]=='`' ){
      skip_codespan(data, size, &i);
      i--;
    }
  }

  /* march back to check for optional last '|' before blanks and EOL */
  while( i && (data[i-1]==' ' || data[i-1]=='\t' || data[i-1]=='\n') ){ i--; }
  if( i && is_table_sep(data, i-1) ) outer_sep += 1;

  /* return the number of column or 0 if it's not a table line */
  return (n_sep>0) ? (n_sep-outer_sep+1) : 0;
}


/* prefix_quote -- returns blockquote prefix length */
static size_t prefix_quote(char *data, size_t size){
  size_t i = 0;
  if( i<size && data[i]==' ' ) i++;
  if( i<size && data[i]==' ' ) i++;
  if( i<size && data[i]==' ' ) i++;
  if( i<size && data[i]=='>' ){
    if( i+1<size && (data[i+1]==' ' || data[i+1]=='\t') ){
      return i + 2;
    }else{
      return i + 1;
    }
  }else{
    return 0;
  }
}


/* prefix_code -- returns prefix length for block code */
static size_t prefix_code(char *data, size_t size){
  if( size>0 && data[0]=='\t' ) return 1;
  if( size>3 && data[0]==' ' && data[1]==' ' && data[2]==' ' && data[3]==' ' ){
    return 4;
  }
  return 0;
}

/* Return the number of characters in the delimiter of a fenced code
** block. */
static size_t prefix_fencedcode(char *data, size_t size){
  char c = data[0];
  int nb;
  if( c!='`' && c!='~' ) return 0;
  for(nb=1; nb<(int)size-3 && data[nb]==c; nb++){}
  if( nb<3 ) return 0;
  if( nb>=(int)size-nb ) return 0;
  return nb;
}

/* prefix_oli -- returns ordered list item prefix */
static size_t prefix_oli(char *data, size_t size){
  size_t i = 0;
  if( i<size && data[i]==' ') i++;
  if( i<size && data[i]==' ') i++;
  if( i<size && data[i]==' ') i++;

  if( i>=size || data[i]<'0' || data[i]>'9' ) return 0;
  while( i<size && data[i]>='0' && data[i]<='9' ){ i++; }

  if( i+1>=size
   || (data[i]!='.' && data[i]!=')')
   || (data[i+1]!=' ' && data[i+1]!='\t')
  ){
   return 0;
  }
  i = i+2;
  while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
  return i;
}


/* prefix_uli -- returns ordered list item prefix */
static size_t prefix_uli(char *data, size_t size){
  size_t i = 0;
  if( i<size && data[i]==' ') i++;
  if( i<size && data[i]==' ') i++;
  if( i<size && data[i]==' ') i++;
  if( i+1>=size
   || (data[i]!='*' && data[i]!='+' && data[i]!='-')
   || (data[i+1]!=' ' && data[i+1]!='\t')
  ){
    return 0;
  }
  i = i+2;
  while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
  return i;
}


/* parse_block predeclaration */
static void parse_block(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size);


/* parse_blockquote -- handles parsing of a blockquote fragment */
static size_t parse_blockquote(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  size_t beg, end = 0, pre, work_size = 0, nb, endFence = 0;
  char *work_data = 0;
  struct Blob *out = new_work_buffer(rndr);

  /* Check to see if this is a quote of a fenced code block, because
  ** if it is, then blank lines do not terminated the quoted text.  Ex:
  **
  **    > ~~~~
  **    First line
  **
  **    Line after blank
  **    ~~~~
  **
  **  If this is a quoted fenced block, then set endFence to be the
  **  offset of the end of the fenced block.
  */
  pre = prefix_quote(data,size);
  pre += is_empty(data+pre,size-pre);
  nb = prefix_fencedcode(data+pre,size-pre);
  if( nb ){
    size_t i = 0;
    char delim = data[pre];
    for(end=pre+nb; end<size && i<nb; end++){
      if( data[end]==delim ) i++; else i = 0;
    }
    if( i>=nb ) endFence = end;
  }

  beg = 0;
  while( beg<size ){
    for(end=beg+1; end<size && data[end-1]!='\n'; end++);
    pre = prefix_quote(data+beg, end-beg);
    if( pre ){
      beg += pre; /* skipping prefix */
    }else if( is_empty(data+beg, end-beg)
     && (end>=size
         || (end>endFence
             && prefix_quote(data+end, size-end)==0
             && !is_empty(data+end, size-end)))
    ){
      /* empty line followed by non-quote line */
      break;
    }
    if( beg<end ){ /* copy into the in-place working buffer */
      if( !work_data ){
        work_data = data+beg;
      }else if( (data+beg)!=(work_data+work_size) ){
        memmove(work_data+work_size, data+beg, end-beg);
      }
      work_size += end-beg;
    }
    beg = end;
  }

  if( rndr->make.blockquote ){
    if( !too_deep(rndr) ){
      parse_block(out, rndr, work_data, work_size);
    }else{
      blob_append(out, work_data, work_size);
    }
    rndr->make.blockquote(ob, out, rndr->make.opaque);
  }
  release_work_buffer(rndr, out);
  return end;
}


/* parse_paragraph -- handles parsing of a regular paragraph */
static size_t parse_paragraph(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  size_t i = 0, end = 0;
  int level = 0;
  char *work_data = data;
  size_t work_size = 0;

  while( i<size ){
    char *zEnd = memchr(data+i, '\n', size-i-1);
    end = zEnd==0 ? size : (size_t)(zEnd - (data-1));
    /* The above is the same as:
    **    for(end=i+1; end<size && data[end-1]!='\n'; end++);
    ** "end" is left with a value such that data[end] is one byte
    ** past the first '\n' or one byte past the end of the string */
    if( is_empty(data+i, size-i)
     || (level = is_headerline(data+i, size-i))!= 0
    ){
      break;
    }
    if( (i && data[i]=='#')
     || is_hrule(data+i, size-i)
     || prefix_uli(data+i, size-i)
     || prefix_oli(data+i, size-i)
    ){
      end = i;
      break;
    }
    i = end;
  }

  work_size = i;
  while( work_size && data[work_size-1]=='\n' ){ work_size--; }

  if( !level ){
    if( rndr->make.paragraph ){
      struct Blob *tmp = new_work_buffer(rndr);
      parse_inline(tmp, rndr, work_data, work_size);
      rndr->make.paragraph(ob, tmp, rndr->make.opaque);
      release_work_buffer(rndr, tmp);
    }
  }else{
    if( work_size ){
      size_t beg;
      i = work_size;
      work_size -= 1;
      while( work_size && data[work_size]!='\n' ){ work_size--; }
      beg = work_size+1;
      while( work_size && data[work_size-1]=='\n'){ work_size--; }
      if( work_size ){
        struct Blob *tmp = new_work_buffer(rndr);
        parse_inline(tmp, rndr, work_data, work_size);
        if( rndr->make.paragraph ){
          rndr->make.paragraph(ob, tmp, rndr->make.opaque);
        }
        release_work_buffer(rndr, tmp);
        work_data += beg;
        work_size = i - beg;
      }else{
        work_size = i;
      }
    }

    if( rndr->make.header ){
      struct Blob *span = new_work_buffer(rndr);
      parse_inline(span, rndr, work_data, work_size);
      rndr->make.header(ob, span, level, rndr->make.opaque);
      release_work_buffer(rndr, span);
    }
  }
  return end;
}


/* parse_blockcode -- handles parsing of a block-level code fragment */
static size_t parse_blockcode(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  size_t beg, end, pre;
  struct Blob *work = new_work_buffer(rndr);

  beg = 0;
  while( beg<size ){
    char *zEnd = memchr(data+beg, '\n', size-beg-1);
    end = zEnd==0 ? size : (size_t)(zEnd - (data-1));
    /* The above is the same as:
    **   for(end=beg+1; end<size && data[end-1]!='\n'; end++);
    ** "end" is left with a value such that data[end] is one byte
    ** past the first \n or past then end of the string. */
    pre = prefix_code(data+beg, end-beg);
    if( pre ){
      beg += pre; /* skipping prefix */
    }else if( !is_empty(data+beg, end-beg) ){
      /* non-empty non-prefixed line breaks the pre */
      break;
    }
    if( beg<end ){
      /* verbatim copy to the working buffer, escaping entities */
      if( is_empty(data + beg, end - beg) ){
        blob_append_char(work, '\n');
      }else{
        blob_append(work, data+beg, end-beg);
      }
    }
    beg = end;
  }

  end = blob_size(work);
  while( end>0 && blob_buffer(work)[end-1]=='\n' ){ end--; }
  work->nUsed = end;
  blob_append_char(work, '\n');

  if( work!=ob ){
    if( rndr->make.blockcode ){
      rndr->make.blockcode(ob, work, rndr->make.opaque);
    }
    release_work_buffer(rndr, work);
  }
  return beg;
}


/* parse_listitem -- parsing of a single list item */
/*  assuming initial prefix is already removed */
static size_t parse_listitem(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size,
  int *flags
){
  struct Blob *work = 0, *inter = 0;
  size_t beg = 0, end, pre, sublist = 0, orgpre = 0, i;
  int in_empty = 0, has_inside_empty = 0;

  /* keeping track of the first indentation prefix */
  if( size>1 && data[0]==' ' ){
    orgpre = 1;
    if( size>2 && data[1]==' ' ){
      orgpre = 2;
      if( size>3 && data[2]==' ' ){
        orgpre = 3;
      }
    }
   }
  beg = prefix_uli(data, size);
  if( !beg ) beg = prefix_oli(data, size);
  if( !beg ) return 0;
  /* skipping to the beginning of the following line */
  end = beg;
  while( end<size && data[end-1]!='\n' ){ end++; }

  /* getting working buffers */
  work = new_work_buffer(rndr);
  inter = new_work_buffer(rndr);

  /* putting the first line into the working buffer */
  blob_append(work, data+beg, end-beg);
  beg = end;

  /* process the following lines */
  while( beg<size ){
    end++;
    while( end<size && data[end-1]!='\n' ){ end++; }

    /* process an empty line */
    if( is_empty(data+beg, end-beg) ){
      in_empty = 1;
      beg = end;
      continue;
    }

    /* computing the indentation */
    i = 0;
    if( end-beg>1 && data[beg]==' ' ){
      i = 1;
      if( end-beg>2 && data[beg+1]==' ' ){
        i = 2;
        if( end-beg>3 && data[beg+2]==' ' ){
          i = 3;
          if( end-beg>3 && data[beg+3]==' ' ){
            i = 4;
          }
        }
      }
    }
    pre = i;
    if( data[beg]=='\t' ){ i = 1; pre = 8; }

    /* checking for a new item */
    if( (prefix_uli(data+beg+i, end-beg-i) && !is_hrule(data+beg+i, end-beg-i))
     || prefix_oli(data+beg+i, end-beg-i)
    ){
      if( in_empty ) has_inside_empty = 1;
      if( pre == orgpre ){ /* the following item must have */
        break;             /* the same indentation */
      }
      if( !sublist ) sublist = blob_size(work);

    /* joining only indented stuff after empty lines */
    }else if( in_empty && i<4 && data[beg]!='\t' ){
        *flags |= MKD_LI_END;
        break;
    }else if( in_empty ){
      blob_append_char(work, '\n');
      has_inside_empty = 1;
    }
    in_empty = 0;

    /* adding the line without prefix into the working buffer */
    blob_append(work, data+beg+i, end-beg-i);
    beg = end;
  }

  /* non-recursive fallback when working buffer stack is full */
  if( !inter ){
    if( rndr->make.listitem ){
      rndr->make.listitem(ob, work, *flags, rndr->make.opaque);
    }
    release_work_buffer(rndr, work);
    return beg;
  }

  /* render of li contents */
  if( has_inside_empty ) *flags |= MKD_LI_BLOCK;
  if( *flags & MKD_LI_BLOCK ){
    /* intermediate render of block li */
    if( sublist && sublist<blob_size(work) ){
      parse_block(inter, rndr, blob_buffer(work), sublist);
      parse_block(inter,
                  rndr,
                  blob_buffer(work)+sublist,
                  blob_size(work)-sublist);
    }else{
      parse_block(inter, rndr, blob_buffer(work), blob_size(work));
    }
  }else{
    /* intermediate render of inline li */
    if( sublist && sublist<blob_size(work) ){
      parse_inline(inter, rndr, blob_buffer(work), sublist);
      parse_block(inter,
                  rndr,
                  blob_buffer(work)+sublist,
                  blob_size(work)-sublist);
    }else{
      parse_inline(inter, rndr, blob_buffer(work), blob_size(work));
    }
  }

  /* render of li itself */
  if( rndr->make.listitem ){
    rndr->make.listitem(ob, inter, *flags, rndr->make.opaque);
  }
  release_work_buffer(rndr, inter);
  release_work_buffer(rndr, work);
  return beg;
}


/* parse_list -- parsing ordered or unordered list block */
static size_t parse_list(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size,
  int flags
){
  struct Blob *work = new_work_buffer(rndr);
  size_t i = 0, j;

  while( i<size ){
    j = parse_listitem(work, rndr, data+i, size-i, &flags);
    i += j;
    if( !j || (flags & MKD_LI_END) ) break;
  }

  if( rndr->make.list ) rndr->make.list(ob, work, flags, rndr->make.opaque);
  release_work_buffer(rndr, work);
  return i;
}


/* parse_atxheader -- parsing of atx-style headers */
static size_t parse_atxheader(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  int level = 0;
  size_t i, end, skip, span_beg, span_size;

  if( !size || data[0]!='#' ) return 0;

  while( level<(int)size && level<6 && data[level]=='#' ){ level++; }
  for(i=level; i<size && (data[i]==' ' || data[i]=='\t'); i++);
  if ( (int)i == level ) return parse_paragraph(ob, rndr, data, size);
  span_beg = i;

  for(end=i; end<size && data[end]!='\n'; end++);
  skip = end;
  if( end<=i ) return parse_paragraph(ob, rndr, data, size);
  while( end && data[end-1]=='#' ){ end--; }
  while( end && (data[end-1]==' ' || data[end-1]=='\t') ){ end--; }
  if( end<=i ) return parse_paragraph(ob, rndr, data, size);

  span_size = end-span_beg;
  if( rndr->make.header ){
    struct Blob *span = new_work_buffer(rndr);
    parse_inline(span, rndr, data+span_beg, span_size);
    rndr->make.header(ob, span, level, rndr->make.opaque);
    release_work_buffer(rndr, span);
  }
  return skip;
}


/* htmlblock_end -- checking end of HTML block : </tag>[ \t]*\n[ \t*]\n */
/*  returns the length on match, 0 otherwise */
static size_t htmlblock_end(
  const struct html_tag *tag,
  const char *data,
  size_t size
){
  size_t i, w;

  /* assuming data[0]=='<' && data[1]=='/' already tested */

  /* checking tag is a match */
  if( (tag->size+3)>(int)size
    || fossil_strnicmp(data+2, tag->text, tag->size)
    || data[tag->size+2]!='>'
  ){
    return 0;
  }

  /* checking white lines */
  i = tag->size + 3;
  w = 0;
  if( i<size && (w = is_empty(data+i, size-i))==0 ){
    return 0; /* non-blank after tag */
  }
  i += w;
  w = 0;

  if( i<size && (w = is_empty(data + i, size - i))==0 ){
    return 0; /* non-blank line after tag line */
  }
  return i+w;
}


/* parse_htmlblock -- parsing of inline HTML block */
static size_t parse_htmlblock(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  size_t i, j = 0;
  const struct html_tag *curtag;
  int found;
  size_t work_size = 0;
  struct Blob work = BLOB_INITIALIZER;

  /* identification of the opening tag */
  if( size<2 || data[0]!='<' ) return 0;
  curtag = find_block_tag(data+1, size-1);

  /* handling of special cases */
  if( !curtag ){

    /* HTML comment, laxist form */
    if( size>5 && data[1]=='!' && data[2]=='-' && data[3]=='-' ){
      i = 5;
      while( i<size && !(data[i-2]=='-' && data[i-1]=='-' && data[i]=='>') ){
        i++;
      }
      i++;
      if( i<size ){
        j = is_empty(data+i, size-i);
        if( j ){
          work_size = i+j;
          if( !rndr->make.blockhtml ) return work_size;
          blob_init(&work, data, work_size);
          rndr->make.blockhtml(ob, &work, rndr->make.opaque);
          return work_size;
        }
      }
    }

    /* HR, which is the only self-closing block tag considered */
    if( size>4
      && (data[1]=='h' || data[1]=='H')
      && (data[2]=='r' || data[2]=='R')
    ){
      i = 3;
      while( i<size && data[i]!='>' ){ i++; }
      if( i+1<size ){
        i += 1;
        j = is_empty(data+i, size-i);
        if( j ){
          work_size = i+j;
          if( !rndr->make.blockhtml ) return work_size;
          blob_init(&work, data, work_size);
          rndr->make.blockhtml(ob, &work, rndr->make.opaque);
          return work_size;
        }
      }
    }

    /* no special case recognised */
    return 0;
  }

  /* looking for an matching closing tag */
  /* followed by a blank line */
  i = 1;
  found = 0;
  while( i<size ){
    i++;
    while( i<size && !(data[i-1]=='<' && data[i]=='/') ){ i++; }
    if( (i+2+curtag->size)>size ) break;
    j = htmlblock_end(curtag, data+i-1, size-i+1);
    if (j) {
      i += j-1;
      found = 1;
      break;
    }
  }
  if( !found ) return 0;

  /* the end of the block has been found */
  if( strcmp(curtag->text,"html")==0 ){
    /* Omit <html> tags */
    enum mkd_autolink dummy;
    int k = tag_length(data, size, &dummy);
    int sz = i - (j+k);
    if( sz>0 ) blob_init(&work, data+k, sz);
  }else{
    blob_init(&work, data, i);
  }
  if( rndr->make.blockhtml ){
    rndr->make.blockhtml(ob, &work, rndr->make.opaque);
  }
  return i;
}


/* parse_table_cell -- parse a cell inside a table */
static void parse_table_cell(
  struct Blob *ob,     /* output blob */
  struct render *rndr, /* renderer description */
  char *data,          /* input text */
  size_t size,         /* input text size */
  int flags            /* table flags */
){
  struct Blob *span = new_work_buffer(rndr);
  parse_inline(span, rndr, data, size);
  rndr->make.table_cell(ob, span, flags, rndr->make.opaque);
  release_work_buffer(rndr, span);
}


/* parse_table_row -- parse an input line into a table row */
static size_t parse_table_row(
  struct Blob *ob,        /* output blob for rendering */
  struct render *rndr,    /* renderer description */
  char *data,             /* input text */
  size_t size,            /* input text size */
  int *aligns,            /* array of default alignment for columns */
  size_t align_size,      /* number of columns with default alignment */
  int flags               /* table flags */
){
  size_t i = 0, col = 0;
  size_t beg, end, total = 0;
  struct Blob *cells = new_work_buffer(rndr);
  int align;

  /* skip leading blanks and separator */
  while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
  if( i<size && data[i]=='|' ) i++;

  /* go over all the cells */
  while( i<size && total==0 ){
    /* check optional left/center align marker */
    align = 0;
    if( data[i]==':' ){
      align |= MKD_CELL_ALIGN_LEFT;
      i++;
    }

    /* skip blanks */
    while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
    beg = i;

    /* forward to the next separator or EOL */
    while( i<size && !is_table_sep(data, i) && data[i]!='\n' ){
      if( data[i]=='`' ){
        skip_codespan(data, size, &i);
      }else{
        i++;
      }
    }
    end = i;
    if( i<size ){
      i++;
      if( data[i-1]=='\n' ) total = i;
    }

    /* check optional right/center align marker */
    if( i>beg && data[end-1]==':' ){
      align |= MKD_CELL_ALIGN_RIGHT;
      end--;
    }

    /* remove trailing blanks */
    while( end>beg && (data[end-1]==' ' || data[end-1]=='\t') ){ end--; }

    /* skip the last cell if it was only blanks */
    /* (because it is only the optional end separator) */
    if( total && end<=beg ) continue;

    /* fallback on default alignment if not explicit */
    if( align==0 && aligns && col<align_size ) align = aligns[col];

    /* render cells */
    if( cells && end>=beg ){
      parse_table_cell(cells, rndr, data+beg, end-beg, align|flags);
    }

    col++;
  }

  /* render the whole row and clean up */
  rndr->make.table_row(ob, cells, flags, rndr->make.opaque);
  release_work_buffer(rndr, cells);
  return total ? total : size;
}


/* parse_table -- parsing of a whole table */
static size_t parse_table(
  struct Blob *ob,
  struct render *rndr,
  char *data,
  size_t size
){
  size_t i = 0, head_end, col;
  size_t align_size = 0;
  int *aligns = 0;
  struct Blob *head = 0;
  struct Blob *rows = new_work_buffer(rndr);

  /* skip the first (presumably header) line */
  while( i<size && data[i]!='\n' ){ i++; }
  head_end = i;

  /* fallback on end of input */
  if( i>=size ){
    parse_table_row(rows, rndr, data, size, 0, 0, 0);
    rndr->make.table(ob, 0, rows, rndr->make.opaque);
    release_work_buffer(rndr, rows);
    return i;
  }

  /* attempt to parse a table rule, i.e. blanks, dash, colons and sep */
  i++;
  col = 0;
  while( i<size
    && (data[i]==' '
      || data[i]=='\t'
      || data[i]=='-'
      || data[i] == ':'
      || data[i] =='|')
  ){
    if( data[i] == '|' ) align_size++;
    if( data[i] == ':' ) col = 1;
    i += 1;
  }

  if( i<size && data[i]=='\n' ){
    align_size++;

    /* render the header row */
    head = new_work_buffer(rndr);
    parse_table_row(head, rndr, data, head_end, 0, 0, MKD_CELL_HEAD);

    /* parse alignments if provided */
    if( col && (aligns=fossil_malloc(align_size * sizeof *aligns))!=0 ){
      for(i=0; i<align_size; i++) aligns[i] = 0;
      col = 0;
      i = head_end+1;

      /* skip initial white space and optional separator */
      while( i<size && (data[i]==' ' || data[i]=='\t') ){ i++; }
      if( data[i]=='|' ) i++;

      /* compute default alignment for each column */
      while (i < size && data[i] != '\n') {
        if (data[i] == ':')
          aligns[col] |= MKD_CELL_ALIGN_LEFT;
        while (i < size
        && data[i] != '|' && data[i] != '\n')
          i += 1;
        if (data[i - 1] == ':')
          aligns[col] |= MKD_CELL_ALIGN_RIGHT;
        if (i < size && data[i] == '|')
          i += 1;
        col += 1; }
    }

    /* point i to the beginning of next line/row */
    i++;

  }else{
    /* there is no valid ruler, continuing without header */
    i = 0;
  }

  /* render the table body lines */
  while( i<size && is_tableline(data + i, size - i) ){
    i += parse_table_row(rows, rndr, data+i, size-i, aligns, align_size, 0);
  }

  /* render the full table */
  rndr->make.table(ob, head, rows, rndr->make.opaque);

  /* cleanup */
  release_work_buffer(rndr, head);
  release_work_buffer(rndr, rows);
  fossil_free(aligns);
  return i;
}


/* parse_block -- parsing of one block, returning next char to parse */
static void parse_block(
  struct Blob *ob,        /* output blob */
  struct render *rndr,    /* renderer internal state */
  char *data,             /* input text */
  size_t size             /* input text size */
){
  size_t beg, end, i;
  char *txt_data;
  int has_table;
  if( !size ) return;
  has_table = (rndr->make.table
    && rndr->make.table_row
    && rndr->make.table_cell
    && memchr(data, '|', size)!=0);

  beg = 0;
  while( beg<size ){
    txt_data = data+beg;
    end = size-beg;
    if( data[beg]=='#' ){
      beg += parse_atxheader(ob, rndr, txt_data, end);
    }else if( data[beg]=='<'
      && rndr->make.blockhtml
      && (i = parse_htmlblock(ob, rndr, txt_data, end))!=0
    ){
      beg += i;
    }else if( (i=is_empty(txt_data, end))!=0 ){
      beg += i;
    }else if( is_hrule(txt_data, end) ){
      if( rndr->make.hrule ) rndr->make.hrule(ob, rndr->make.opaque);
      while( beg<size && data[beg]!='\n' ){ beg++; }
      beg++;
    }else if( prefix_quote(txt_data, end) ){
      beg += parse_blockquote(ob, rndr, txt_data, end);
    }else if( prefix_code(txt_data, end) ){
      beg += parse_blockcode(ob, rndr, txt_data, end);
    }else if( prefix_uli(txt_data, end) ){
      beg += parse_list(ob, rndr, txt_data, end, 0);
    }else if( prefix_oli(txt_data, end) ){
      beg += parse_list(ob, rndr, txt_data, end, MKD_LIST_ORDERED);
    }else if( has_table && is_tableline(txt_data, end) ){
      beg += parse_table(ob, rndr, txt_data, end);
    }else if( prefix_fencedcode(txt_data, end)
             && (i = char_codespan(ob, rndr, txt_data, 0, end))!=0
    ){
      beg += i;
    }else{
      beg += parse_paragraph(ob, rndr, txt_data, end);
    }
  }
}



/*********************
 * REFERENCE PARSING *
 *********************/

/* is_ref -- returns whether a line is a reference or not */
static int is_ref(
  const char *data,   /* input text */
  size_t beg,         /* offset of the beginning of the line */
  size_t end,         /* offset of the end of the text */
  size_t *last,       /* last character of the link */
  struct Blob *refs   /* array of link references */
){
  size_t i = 0;
  size_t id_offset, id_end;
  size_t link_offset, link_end;
  size_t title_offset, title_end;
  size_t line_end;
  struct link_ref lr = {
    BLOB_INITIALIZER,
    BLOB_INITIALIZER,
    BLOB_INITIALIZER
  };

  /* up to 3 optional leading spaces */
  if( beg+3>=end ) return 0;
  if( data[beg]==' ' ){
    i = 1;
    if( data[beg+1]==' ' ){
      i = 2;
      if( data[beg+2]==' ' ){
        i = 3;
        if( data[beg+3]==' ' ) return 0;
      }
    }
  }
  i += beg;

  /* id part: anything but a newline between brackets */
  if( data[i]!='[' ) return 0;
  i++;
  if( i>=end || data[i]=='^' ) return 0;  /* see is_footnote() */

  id_offset = i;
  while( i<end && data[i]!='\n' && data[i]!='\r' && data[i]!=']' ){ i++; }
  if( i>=end || data[i]!=']' ) return 0;
  id_end = i;

  /* spacer: colon (space | tab)* newline? (space | tab)* */
  i++;
  if( i>=end || data[i]!=':' ) return 0;
  i++;
  while( i<end && (data[i]==' ' || data[i]=='\t') ){ i++; }
  if( i<end && (data[i]=='\n' || data[i]=='\r') ){
    i++;
    if( i<end && data[i]=='\r' && data[i-1] == '\n' ) i++;
  }
  while( i<end && (data[i]==' ' || data[i]=='\t') ){ i++; }
  if( i>=end ) return 0;

  /* link: whitespace-free sequence, optionally between angle brackets */
  if( data[i]=='<' ) i++;
  link_offset = i;
  while( i<end
   && data[i]!=' '
   && data[i]!='\t'
   && data[i]!='\n'
   && data[i]!='\r'
  ){
    i += 1;
  }
  /* TODO: maybe require both data[i-1]=='>' && data[link_offset-1]=='<' ? */
  if( data[i-1]=='>' ) link_end = i-1; else link_end = i;

  /* optional spacer: (space | tab)* (newline | '\'' | '"' | '(' ) */
  while( i<end && (data[i]==' ' || data[i]=='\t') ){ i++; }
  if( i<end
   && data[i]!='\n'
   && data[i]!='\r'
   && data[i]!='\''
   && data[i]!='"'
   && data[i]!='('
  ){
    return 0;
  }
  line_end = 0;
  /* computing end-of-line */
  if( i>=end || data[i]=='\r' || data[i]=='\n' ) line_end = i;
  if( i+1<end && data[i]=='\n' && data[i+1]=='\r' ) line_end = i+1;

  /* optional (space|tab)* spacer after a newline */
  if( line_end ){
    i = line_end+1;
    while( i<end && (data[i]==' ' || data[i]=='\t') ){ i++; }
  }

  /* optional title: any non-newline sequence enclosed in '"()
          alone on its line */
  title_offset = title_end = 0;
  if( i+1<end && (data[i]=='\'' || data[i]=='"' || data[i]=='(') ){
    i += 1;
    title_offset = i;
    /* looking for EOL */
    while( i<end && data[i]!='\n' && data[i]!='\r' ){ i++; }
    if( i+1<end && data[i]=='\n' && data[i+1]=='\r' ){
      title_end = i + 1;
    }else{
      title_end = i;
    }
    /* stepping back */
    i--;
    while( i>title_offset && (data[i]==' ' || data[i]=='\t') ){ i--; }
    if( i>title_offset && (data[i]=='\'' || data[i]=='"' || data[i]==')') ){
      line_end = title_end;
      title_end = i;
    }
  }
  if( !line_end ) return 0; /* garbage after the link */

  /* a valid ref has been found, filling-in return structures */
  if( last ) *last = line_end;
  if( !refs ) return 1;
  if( build_ref_id(&lr.id, data+id_offset, id_end-id_offset)<0 ) return 0;
  blob_append(&lr.link, data+link_offset, link_end-link_offset);
  if( title_end>title_offset ){
    blob_append(&lr.title, data+title_offset, title_end-title_offset);
  }
  blob_append(refs, (char *)&lr, sizeof lr);
  return 1;
}

/*********************
 * FOOTNOTE PARSING  *
 *********************/

/* is_footnote -- check if data holds a definition of a labeled footnote.
 * If so then append the corresponding element to `footnotes` array */
static int is_footnote(
  const char *data,   /* input text */
  size_t beg,         /* offset of the beginning of the line */
  size_t end,         /* offset of the end of the text */
  size_t *last,       /* last character of the link */
  struct Blob * footnotes
){
  size_t i, id_offset, id_end, upc_offset, upc_size;
  struct footnote fn = FOOTNOTE_INITIALIZER;

  /* failfast if data is too short */
  if( beg+5>=end ) return 0;
  i = beg;

  /* footnote definition must start at the begining of a line */
  if( data[i]!='[' ) return 0;
  i++;
  if( data[i]!='^' ) return 0;
  id_offset = ++i;

  /* id part: anything but a newline between brackets */
  while( i<end && data[i]!=']' && data[i]!='\n' && data[i]!='\r' ){ i++; }
  if( i>=end || data[i]!=']' ) return 0;
  id_end = i++;

  /* spacer: colon (space | tab)* */
  if( i>=end || data[i]!=':' ) return 0;
  i++;
  while( i<end && (data[i]==' ' || data[i]=='\t') ){ i++; }

  /* passthrough truncated footnote definition */
  if( i>=end ) return 0;

  if( build_ref_id(&fn.id, data+id_offset, id_end-id_offset)<0 ) return 0;

  /* footnote's text may start on the same line after [^id]: */
  upc_offset = upc_size = 0;
  if( data[i]!='\n' && data[i]!='\r' ){
    size_t j;
    upc_size = is_footnote_classlist(data+i, end-i, 1);
    upc_offset = i; /* prevent further checks for a classlist */
    i += upc_size;
    j = i;
    while( i<end && data[i]!='\n' && data[i]!='\r' ){ i++; };
    if( i!=j )blob_append(&fn.text, data+j, i-j);
    if( i<end ){
      blob_append_char(&fn.text, data[i]);
      i++;
      if( i<end && data[i]=='\n' && data[i-1]=='\r' ){
        blob_append_char(&fn.text, data[i]);
        i++;
      }
    }
  }else{
    i++;
    if( i<end && data[i]=='\n' && data[i-1]=='\r' ) i++;
  }
  if( i<end ){

    /* compute the indentation from the 2nd line  */
    size_t indent = i;
    const char *spaces = data+i;
    while( indent<end && data[indent]==' ' ){ indent++; }
    if( indent>=end ) goto footnote_finish;
    indent -= i;
    if( indent<2 ) goto footnote_finish;

    /* process the 2nd and subsequent lines */
    while( i+indent<end && memcmp(data+i,spaces,indent)==0 ){
      size_t j;
      i += indent;
      if( !upc_offset ){
        /* a classlist must be provided no later than at the 2nd line */
        upc_offset = i + sizeof_blank_prefix(data+i, end-i, 1);
        upc_size = is_footnote_classlist(data+upc_offset,
                                         end-upc_offset, 1);
        if( upc_size ){
          i = upc_offset + upc_size;
        }
      }
      j = i;
      while( i<end && data[i]!='\n' && data[i]!='\r' ){ i++; }
      if( i!=j ) blob_append(&fn.text, data+j, i-j);
      if( i>=end ) break;
      blob_append_char(&fn.text, data[i]);
      i++;
      if( i<end && data[i]=='\n' && data[i-1]=='\r' ){
        blob_append_char(&fn.text, data[i]);
        i++;
      }
    }
  }
footnote_finish:
  if( !blob_size(&fn.text) ){
    blob_reset(&fn.id);
    return 0;
  }
  if( !blob_trim(&fn.text) ){  /* if the content is all-blank */
    if( upc_size ){            /* interpret UPC as plain text */
      blob_append(&fn.text, data+upc_offset, upc_size);
      upc_size = 0;
    }else{
      blob_reset(&fn.id);      /* or clean up and fail */
      blob_reset(&fn.text);
      return 0;
    }
  }
  /* a valid note has been found */
  if( last ) *last = i;
  if( footnotes ){
    fn.defno = COUNT_FOOTNOTES( footnotes );
    if( upc_size ){
      assert( upc_offset && upc_offset+upc_size<end );
      blob_append(&fn.upc, data+upc_offset, upc_size);
    }
    blob_append(footnotes, (char *)&fn, sizeof fn);
  }
  return 1;
}

/**********************
 * EXPORTED FUNCTIONS *
 **********************/

/* markdown -- parses the input buffer and renders it into the output buffer */
void markdown(
  struct Blob *ob,                   /* output blob for rendered text */
  const struct Blob *ib,             /* input blob in markdown */
  const struct mkd_renderer *rndrer  /* renderer descriptor (callbacks) */
){
  struct link_ref *lr;
  struct footnote *fn;
  int i;
  size_t beg, end = 0;
  struct render rndr;
  size_t size;
  Blob text = BLOB_INITIALIZER;        /* input after the first pass  */
  Blob * const allNotes = &rndr.notes.all;

  /* filling the render structure */
  if( !rndrer ) return;
  rndr.make = *rndrer;
  rndr.nBlobCache = 0;
  rndr.iDepth = 0;
  rndr.refs  = empty_blob;
  rndr.notes.all = empty_blob;
  rndr.notes.nMarks = 0;
  rndr.notes.misref.id    = empty_blob;
  rndr.notes.misref.text  = empty_blob;
  rndr.notes.misref.upc   = empty_blob;
  rndr.notes.misref.bRndred = 0;
  rndr.notes.misref.nUsed =  0;
  rndr.notes.misref.iMark = -1;

  for(i=0; i<256; i++) rndr.active_char[i] = 0;
  if( (rndr.make.emphasis
    || rndr.make.double_emphasis
    || rndr.make.triple_emphasis)
   && rndr.make.emph_chars
  ){
    for(i=0; rndr.make.emph_chars[i]; i++){
      rndr.active_char[(unsigned char)rndr.make.emph_chars[i]] = char_emphasis;
    }
  }
  if( rndr.make.codespan ) rndr.active_char['`'] = char_codespan;
  if( rndr.make.linebreak ) rndr.active_char['\n'] = char_linebreak;
  if( rndr.make.image || rndr.make.link ) rndr.active_char['['] = char_link;
  if( rndr.make.footnote_ref ) rndr.active_char['('] = char_footnote;
  rndr.active_char['<'] = char_langle_tag;
  rndr.active_char['\\'] = char_escape;
  rndr.active_char['&'] = char_entity;

  /* first pass: iterate over lines looking for references,
   * copying everything else into "text" */
  beg = 0;
  for(size = blob_size(ib); beg<size ;){
    const char* const data = blob_buffer(ib);
    if( is_ref(data, beg, size, &end, &rndr.refs) ){
      beg = end;
    }else if(is_footnote(data, beg, size, &end, &rndr.notes.all)){
      beg = end;
    }else{ /* skipping to the next line */
      end = beg;
      while( end<size && data[end]!='\n' && data[end]!='\r' ){
        end += 1;
      }
      /* adding the line body if present */
      if( end>beg ) blob_append(&text, data + beg, end - beg);
      while( end<size && (data[end]=='\n' || data[end]=='\r') ){
        /* add one \n per newline */
        if( data[end]=='\n' || (end+1<size && data[end+1]!='\n') ){
          blob_append_char(&text, '\n');
        }
        end += 1;
      }
      beg = end;
    }
  }

  /* sorting the reference array */
  if( blob_size(&rndr.refs) ){
    qsort(blob_buffer(&rndr.refs),
          blob_size(&rndr.refs)/sizeof(struct link_ref),
          sizeof(struct link_ref),
          cmp_link_ref_sort);
  }
  rndr.notes.nLbled = COUNT_FOOTNOTES( allNotes );

  /* sort footnotes by ID and join duplicates */
  if( rndr.notes.nLbled > 1 ){
    int nDups = 0;
    fn = CAST_AS_FOOTNOTES( allNotes );
    qsort(fn, rndr.notes.nLbled, sizeof(struct footnote), cmp_footnote_id);

    /* concatenate footnotes with equal labels */
    for(i=0; i<rndr.notes.nLbled ;){
      struct footnote *x = fn + i;
      int j = i+1;
      size_t k = blob_size(&x->text) + 64 + blob_size(&x->upc);
      while(j<rndr.notes.nLbled && !blob_compare(&x->id, &fn[j].id)){
        k += blob_size(&fn[j].text) + 10 + blob_size(&fn[j].upc);
        j++;
        nDups++;
      }
      if( i+1<j ){
        Blob list = empty_blob;
        blob_reserve(&list, k);
        /* must match _joined_footnote_indicator in html_footnote_item() */
        blob_append_literal(&list, "<ul class='fn-joined'>\n");
        for(k=i; (int)k<j; k++){
          struct footnote *y = fn + k;
          blob_append_literal(&list, "<li>");
          if( blob_size(&y->upc) ){
            blob_appendb(&list, &y->upc);
            blob_reset(&y->upc);
          }
          blob_appendb(&list, &y->text);
          blob_append_literal(&list, "</li>\n");

          /* free memory buffer */
          blob_reset(&y->text);
          if( (int)k!=i ) blob_reset(&y->id);
        }
        blob_append_literal(&list, "</ul>\n");
        x->text = list;
        g.ftntsIssues[2]++;
      }
      i = j;
    }
    if( nDups ){  /* clean rndr.notes.all from invalidated footnotes */
      const int n = rndr.notes.nLbled - nDups;
      struct Blob filtered = empty_blob;
      blob_reserve(&filtered, n*sizeof(struct footnote));
      for(i=0; i<rndr.notes.nLbled; i++){
        if( blob_size(&fn[i].id) ){
          blob_append(&filtered, (char*)(fn+i), sizeof(struct footnote));
        }
      }
      blob_reset( allNotes );
      rndr.notes.all = filtered;
      rndr.notes.nLbled = n;
      assert( (int)(COUNT_FOOTNOTES(allNotes)) == rndr.notes.nLbled );
    }
  }
  fn = CAST_AS_FOOTNOTES( allNotes );
  for(i=0; i<rndr.notes.nLbled; i++){
    fn[i].index = i;
  }
  assert( rndr.notes.nMarks==0 );

  /* second pass: actual rendering */
  if( rndr.make.prolog ) rndr.make.prolog(ob, rndr.make.opaque);
  parse_block(ob, &rndr, blob_buffer(&text), blob_size(&text));

  if( blob_size(allNotes) || rndr.notes.misref.nUsed ){

    /* Footnotes must be parsed for the correct discovery of (back)links */
    Blob *notes = new_work_buffer( &rndr );
    if( blob_size(allNotes) ){
      Blob *tmp   = new_work_buffer( &rndr );
      int nMarks = -1, maxDepth = 5;

      /* inline notes may get appended to rndr.notes.all while rendering */
      while(1){
        struct footnote *aNotes;
        const int N = COUNT_FOOTNOTES( allNotes );

        /* make a shallow copy of `allNotes` */
        blob_truncate(notes,0);
        blob_appendb(notes, allNotes);
        aNotes = CAST_AS_FOOTNOTES(notes);
        qsort(aNotes, N, sizeof(struct footnote), cmp_footnote_sort);

        if( --maxDepth < 0 || nMarks == rndr.notes.nMarks ) break;
        nMarks = rndr.notes.nMarks;

        for(i=0; i<N; i++){
          const int j = aNotes[i].index;
          struct footnote *x = CAST_AS_FOOTNOTES(allNotes) + j;
          assert( 0<=j && j<N );
          if( x->bRndred || !x->nUsed ) continue;
          assert( x->iMark > 0 );
          assert( blob_size(&x->text) );
          blob_truncate(tmp,0);

          /* `allNotes` may be altered and extended through this call */
          parse_inline(tmp, &rndr, blob_buffer(&x->text), blob_size(&x->text));

          x = CAST_AS_FOOTNOTES(allNotes) + j;
          blob_truncate(&x->text,0);
          blob_appendb(&x->text, tmp);
          x->bRndred = 1;
        }
      }
      release_work_buffer(&rndr,tmp);
    }

    /* footnotes rendering */
    if( rndr.make.footnote_item && rndr.make.footnotes ){
      Blob *all_items = new_work_buffer(&rndr);
      int j = -1;

      /* Assert that the in-memory layout of id, text and upc within
      ** footnote struct matches the expectations of html_footnote_item()
      ** If it doesn't then a compiler has done something very weird.
      */
      assert( &(rndr.notes.misref.id)  == &(rndr.notes.misref.text) - 1 );
      assert( &(rndr.notes.misref.upc) == &(rndr.notes.misref.text) + 1 );

      for(i=0; i<(int)(COUNT_FOOTNOTES(notes)); i++){
        const struct footnote* x = CAST_AS_FOOTNOTES(notes) + i;
        const int xUsed = x->bRndred ? x->nUsed : 0;
        if( !x->iMark ) break;
        assert( x->nUsed );
        rndr.make.footnote_item(all_items, &x->text, x->iMark,
                                     xUsed, rndr.make.opaque);
        if( !xUsed ) g.ftntsIssues[3]++;  /* an overnested footnote */
        j = i;
      }
      if( rndr.notes.misref.nUsed ){
        rndr.make.footnote_item(all_items, 0, -1,
                    rndr.notes.misref.nUsed, rndr.make.opaque);
        g.ftntsIssues[0] += rndr.notes.misref.nUsed;
      }
      while( ++j < (int)(COUNT_FOOTNOTES(notes)) ){
        const struct footnote* x = CAST_AS_FOOTNOTES(notes) + j;
        assert( !x->iMark );
        assert( !x->nUsed );
        assert( !x->bRndred );
        rndr.make.footnote_item(all_items,&x->text,0,0,rndr.make.opaque);
        g.ftntsIssues[1]++;
      }
      rndr.make.footnotes(ob, all_items, rndr.make.opaque);
      release_work_buffer(&rndr, all_items);
    }
    release_work_buffer(&rndr, notes);
  }
  if( rndr.make.epilog ) rndr.make.epilog(ob, rndr.make.opaque);

  /* clean-up */
  assert( rndr.iDepth==0 );
  blob_reset(&text);
  lr = (struct link_ref *)blob_buffer(&rndr.refs);
  end = blob_size(&rndr.refs)/sizeof(struct link_ref);
  for(i=0; i<(int)end; i++){
    blob_reset(&lr[i].id);
    blob_reset(&lr[i].link);
    blob_reset(&lr[i].title);
  }
  blob_reset(&rndr.refs);
  fn = CAST_AS_FOOTNOTES( allNotes );
  end = COUNT_FOOTNOTES( allNotes );
  for(i=0; i<(int)end; i++){
    if(blob_size(&fn[i].id)) blob_reset(&fn[i].id);
    if(blob_size(&fn[i].upc)) blob_reset(&fn[i].upc);
    blob_reset(&fn[i].text);
  }
  blob_reset(&rndr.notes.all);
  for(i=0; i<rndr.nBlobCache; i++){
    fossil_free(rndr.aBlobCache[i]);
  }
}
Added src/markdown.md.






















































































































































































































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# Markdown Overview #

## Paragraphs ##

> Paragraphs are divided by blank lines.  
> End a line with two or more spaces to force a mid-paragraph line break.

## Headings ##

>
    # Top Level Heading                 Alternative Top Level Heading
    # Top Level Heading Variant #       =============================
>
    ## 2nd Level Heading                Alternative 2nd Level Heading
    ## 2nd Level Heading Variant ##     -----------------------------
>
    ### 3rd Level Heading               ### 3rd Level Heading Variant ###
    #### 4th Level Heading              #### 4th Level Heading Variant ####
    ##### 5th Level Heading             ##### 5th Level Heading Variant #####
    ###### 6th Level Heading            ###### 6th Level Heading Variant ######

## Links ##

> 1.  **\[display text\]\(URL\)**
> 2.  **\[display text\]\(URL "Title"\)**
> 3.  **\[display text\]\(URL 'Title'\)**
> 4.  **\<URL\>**
> 5.  **\[display text\]\[label\]**
> 6.  **\[display text\]\[\]**
> 7.  **\[display text\]**
> 8.  **\[\]\(URL\)**

> With link formats 5, 6, and 7 ("reference links"), the URL is supplied
> elsewhere in the document, as shown below.  Link formats 6 and 7 reuse
> the display text as the label.  Labels are case-insensitive.  The title
> may be split onto the next line with optional indenting.

> * **\[label\]:&nbsp;URL**
> * **\[label\]:&nbsp;URL&nbsp;"Title"**
> * **\[label\]:&nbsp;URL&nbsp;'Title'**
> * **\[label\]:&nbsp;URL&nbsp;(Title)**

> If **URL** begins with "http:", "https:', "ftp:' or "mailto:",
> it may optionally be written **\<URL\>** (format 4).
> Other **URL** formats include:
> <ul>
> <li>  A relative pathname.
> <li>  A pathname starting with "/" in which case the Fossil server
>       URL prefix is prepended
> <li>  A wiki page name, or a wiki page name preceded by "wiki:"
> <li>  An artifact or ticket hash or hash prefix
> <li>  A date and time stamp: "YYYY-MM-DD HH:MM:SS" or a subset that
>       includes at least the day of the month.
> <li>  An [interwiki link](#intermap) of the form "<i>Tag</i><b>:</b><i>PageName</i>"</ul>

> In format 8, then the URL becomes the display text.  This is useful for
> hyperlinks that refer to wiki pages and check-in and ticket hashes.

## Text Style ##

> *   _\*italic\*_
> *   *\_italic\_*
> *   __\*\*bold\*\*__
> *   **\_\_bold\_\_**
> *   ___\*\*\*italic+bold\*\*\*___
> *   ***\_\_\_italic+bold\_\_\_***
> *   \``code`\`

> The **\`code\`** construct disables HTML markup, so one can write, for
> example, **\`\<html\>\`** to yield **`<html>`**.

## Lists ##

> ~~~
   *   bullet item
   +   bullet item
   -   bullet item
   1.  numbered item
   2)  numbered item
~~~

> A two-level list is created by placing additional whitespace before the
> **\***/**+**/**-**/**1.** of the secondary items.

> ~~~
   *  top-level item
      *  second-level item
~~~

## Block Quotes ##

> Begin each line of a paragraph with **>** to block quote that paragraph.

> >
    > This paragraph is indented
> >
    > > Double-indented paragraph

## Literal/Verbatim Text - Code Blocks ##

> For inline text, you can either use \``backticks`\` or the HTML
> `<code>` tag.
>
> For blocks of text or code:
>
> 1. Indent the text using a tab character or at least four spaces.
> 2. Precede the block with an HTML `<pre>` tag and follow it with `</pre>`.
> 3. Surround the block by <tt>\`\`\`</tt> (three or more) or <tt>\~\~\~</tt> either at the
> left margin or indented no more than three spaces. The first word
> on that same line (if any) is used in a “`language-WORD`†CSS style in
> the HTML rendering of that code block and is intended for use by
> code syntax highlighters. Thus <tt>\`\`\`c</tt> would mark a block of code
> in the C programming language. Text to be rendered inside the code block
> should therefore start on the next line, not be cuddled up with the
> backticks or tildes.  See the "Diagrams" section below for the case where
> "`language-WORD`" is "pikchr".

> With the standard skins, verbatim text is rendered in a fixed-width font,
> but that is purely a presentation matter, controlled by the skin’s CSS.


## Tables ##

>
    | Header 1     | Header 2    | Header 3      |
    ----------------------------------------------
    | Row 1 Col 1  | Row 1 Col 2 | Row 1 Col 3   |
    |:Left-aligned |:Centered   :| Right-aligned:|
    |              | ↠Blank   → |               |
    | Row 4 Col 1  | Row 4 Col 2 | Row 4 Col 3   |

> The first row is a header if followed by a horizontal rule or a blank line.

> Placing **:** at the left, both, or right sides of a cell gives left-aligned,
> centered, or right-aligned text, respectively.  By default, both header and
> body cells are left-aligned.

> The leftmost or rightmost **\|** is required only if the first or last column,
> respectively, contains at least one blank cell.

## Diagrams ##

>
~~~~~
~~~ pikchr
oval "Start" fit; arrow; box "Hello, World!" fit; arrow; oval "Done" fit
~~~
~~~~~

> Formatted using [Pikchr](https://pikchr.org/home), resulting in:

>
~~~ pikchr
oval "Start" fit; arrow; box "Hello, World!" fit; arrow; oval "Done" fit
~~~

<a id="ftnts"></a>
## Footnotes ##

> Footnotes (or "endnotes") is a Fossil extension of classical Markdown.
> Fossil's syntax for footnotes is similar to links and
> is distinguished by the use of character **^**
> that *immediately* follows an opening bracket.

> 1. **\(^** footnote's text **)**
> 2. **\[** fragment of text **]\(^** a comment about that fragment **\)**
> 3. **\[^**&nbsp;label&nbsp;**\]**
> 4. **\[** fragment of text **\]\[^**&nbsp;label&nbsp;**\]**
> 5. **\[** fragment of text **\]\[^\]**

> With formats 1 and 2 ("inline footnotes") text of a footnote is provided
> in the place where the corresponding numeric mark will be rendered.
> With formats 3, 4, and 5 ("reference footnotes") text of a footnote
> is supplied elsewhere in the document, as shown below.
> Formats 2, 4 and 5 ("span-specific footnotes") mark a specific fragment
> that is being commented in the footnote.
> Format 5 reuses a fragment of text as a label.
> Labels are case-insensitive.

> ```
> [^label]: Footnote definition must start on the first column.
>      The second line (if any) must be indented by two or more spaces.
>      Definition continues until indentation drops below that of the 2nd line.
>```
> Character **^** is not part of a label, it is part of the syntax.
> Both a footnote's text and a fragment to which a footnote applies
> are subject to further interpretation as Markdown sources.

## Miscellaneous ##

> *   In-line images are made using **\!\[alt-text\]\(image-URL\)**.
> *   Use HTML for advanced formatting such as forms, noting that certain
>     tags are [disallowed in some contexts](/help?cmd=safe-html).
> *   **\<!--** HTML-style comments **-->** are supported.
> *   Escape special characters (ex: **\[** **\(** **\|** **\***)
>     using backslash (ex: **\\\[** **\\\(** **\\\|** **\\\***).
> *   A line consisting of **---**, **\*\*\***, or **\_\_\_** is a horizontal
>     rule.  Spaces and extra **-**/**\***/**_** are allowed.
> *   Paragraphs enclosed in **\<html\>...\</html\>** is passed through unchanged.
> *   See [daringfireball.net][] for additional information.
> *   See this page's [Markdown source](/md_rules?txt=1) for more examples.

## Special Features For Fossil ##

> *  In hyperlinks, if the URL begins with **/** then the root of the Fossil
>    repository is prepended.  This allows for repository-relative hyperlinks.
> *  For documents that begin with a top-level heading (ex: **# heading #**),
>    the heading is omitted from the body of the document and becomes the
>    document title displayed at the top of the Fossil page.

[daringfireball.net]: http://daringfireball.net/projects/markdown/syntax

<a name="intermap"></a>
## Interwiki Tag [Map](/intermap)
Added src/markdown_html.c.



















































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2012 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains callbacks for the markdown parser that generate
** XHTML output.
*/

#include "config.h"
#include "markdown_html.h"

#if INTERFACE

void markdown_to_html(
  struct Blob *input_markdown,
  struct Blob *output_title,
  struct Blob *output_body);

#endif /* INTERFACE */

/*
** Markdown-internal helper for generating unique link reference IDs.
** Fields provide typed interpretation of the underline memory buffer.
*/
typedef union bitfield64_t bitfield64_t;
union bitfield64_t{
  char c[8];           /* interpret as the array of  signed  characters */
  unsigned char b[8];  /* interpret as the array of unsigned characters */
};

/*
** An instance of the following structure is passed through the
** "opaque" pointer.
*/
typedef struct MarkdownToHtml MarkdownToHtml;
struct MarkdownToHtml {
  Blob *output_title;     /* Store the title here */
  bitfield64_t unique;    /* Enables construction of unique #id elements */

  #ifndef FOOTNOTES_WITHOUT_URI
  Blob reqURI;            /* REQUEST_URI with escaped quotes */
  #endif
};


/* INTER_BLOCK -- skip a line between block level elements */
#define INTER_BLOCK(ob) \
  do { if( blob_size(ob)>0 ) blob_append_char(ob, '\n'); } while (0)

/*
** FOOTNOTES_WITHOUT_URI macro was introduced by [2c1f8f3592ef00e0]
** to enable flexibility in rendering of footnote-specific hyperlinks.
** It may be defined for a particular build in order to omit
** full REQUEST_URIs within footnote-specific (and page-local) hyperlinks.
** This *is* used for the builds that incorporate 'base-href-fix' branch
** (which in turn fixes footnotes on the preview tab of /wikiedit page).
*/
#ifndef FOOTNOTES_WITHOUT_URI
  #define BLOB_APPEND_URI(dest,ctx) blob_appendb(dest,&((ctx)->reqURI))
#else
  #define BLOB_APPEND_URI(dest,ctx)
#endif

/* Converts an integer to a textual base26 representation
** with proper null-termination.
 * Return empty string if that integer is negative.   */
static bitfield64_t to_base26(int i, int uppercase){
  bitfield64_t x;
  int j;
  memset( &x, 0, sizeof(x) );
  if( i >= 0 ){
    for(j=7; j >= 0; j--){
      x.b[j] = (unsigned char)(uppercase?'A':'a') + i%26;
      if( (i /= 26) == 0 ) break;
    }
    assert( j > 0 );    /* because 2^32 < 26^7 */
    for(i=0; i<8-j; i++)  x.b[i] = x.b[i+j];
    for(   ; i<8  ; i++)  x.b[i] = 0;
  }
  assert( x.c[7] == 0 );
  return x;
}

/* HTML escapes
**
** html_escape() converts < to &lt;, > to &gt;, and & to &amp;.
** html_quote() goes further and converts " into &quot; and ' in &#39;.
*/
static void html_quote(struct Blob *ob, const char *data, size_t size){
  size_t beg = 0, i = 0;
  while( i<size ){
    beg = i;
    while( i<size
     && data[i]!='<'
     && data[i]!='>'
     && data[i]!='"'
     && data[i]!='&'
     && data[i]!='\''
    ){
      i++;
    }
    blob_append(ob, data+beg, i-beg);
    while( i<size ){
      if( data[i]=='<' ){
        blob_append_literal(ob, "&lt;");
      }else if( data[i]=='>' ){
        blob_append_literal(ob, "&gt;");
      }else if( data[i]=='&' ){
        blob_append_literal(ob, "&amp;");
      }else if( data[i]=='"' ){
        blob_append_literal(ob, "&quot;");
      }else if( data[i]=='\'' ){
        blob_append_literal(ob, "&#39;");
      }else{
        break;
      }
      i++;
    }
  }
}
static void html_escape(struct Blob *ob, const char *data, size_t size){
  size_t beg = 0, i = 0;
  while( i<size ){
    beg = i;
    while( i<size
     && data[i]!='<'
     && data[i]!='>'
     && data[i]!='&'
    ){
      i++;
    }
    blob_append(ob, data+beg, i-beg);
    while( i<size ){
      if( data[i]=='<' ){
        blob_append_literal(ob, "&lt;");
      }else if( data[i]=='>' ){
        blob_append_literal(ob, "&gt;");
      }else if( data[i]=='&' ){
        blob_append_literal(ob, "&amp;");
      }else{
        break;
      }
      i++;
    }
  }
}


/* HTML block tags */

/* Size of the prolog: "<div class='markdown'>\n" */
#define PROLOG_SIZE 23

static void html_prolog(struct Blob *ob, void *opaque){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "<div class=\"markdown\">\n");
  assert( blob_size(ob)==PROLOG_SIZE );
}

static void html_epilog(struct Blob *ob, void *opaque){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "</div>\n");
}

static void html_blockhtml(struct Blob *ob, struct Blob *text, void *opaque){
  char *data = blob_buffer(text);
  size_t size = blob_size(text);
  Blob *title = ((MarkdownToHtml*)opaque)->output_title;
  while( size>0 && fossil_isspace(data[0]) ){ data++; size--; }
  while( size>0 && fossil_isspace(data[size-1]) ){ size--; }
  /* If the first raw block is an <h1> element, then use it as the title. */
  if( blob_size(ob)<=PROLOG_SIZE
   && size>9
   && title!=0
   && sqlite3_strnicmp("<h1",data,3)==0
   && sqlite3_strnicmp("</h1>", &data[size-5],5)==0
  ){
    int nTag = html_tag_length(data);
    blob_append(title, data+nTag, size - nTag - 5);
    return;
  }
  INTER_BLOCK(ob);
  blob_append(ob, data, size);
  blob_append_literal(ob, "\n");
}

static void html_blockcode(struct Blob *ob, struct Blob *text, void *opaque){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "<pre><code>");
  html_escape(ob, blob_buffer(text), blob_size(text));
  blob_append_literal(ob, "</code></pre>\n");
}

static void html_blockquote(struct Blob *ob, struct Blob *text, void *opaque){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "<blockquote>\n");
  blob_appendb(ob, text);
  blob_append_literal(ob, "</blockquote>\n");
}

static void html_header(
  struct Blob *ob,
  struct Blob *text,
  int level,
  void *opaque
){
  struct Blob *title = ((MarkdownToHtml*)opaque)->output_title;
  /* The first header at the beginning of a text is considered as
   * a title and not output. */
  if( blob_size(ob)<=PROLOG_SIZE && title!=0 && blob_size(title)==0 ){
    blob_appendb(title, text);
    return;
  }
  INTER_BLOCK(ob);
  blob_appendf(ob, "<h%d>", level);
  blob_appendb(ob, text);
  blob_appendf(ob, "</h%d>", level);
}

static void html_hrule(struct Blob *ob, void *opaque){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "<hr>\n");
}


static void html_list(
  struct Blob *ob,
  struct Blob *text,
  int flags,
  void *opaque
){
  char ol[] = "ol";
  char ul[] = "ul";
  char *tag = (flags & MKD_LIST_ORDERED) ? ol : ul;
  INTER_BLOCK(ob);
  blob_appendf(ob, "<%s>\n", tag);
  blob_appendb(ob, text);
  blob_appendf(ob, "</%s>\n", tag);
}

static void html_list_item(
  struct Blob *ob,
  struct Blob *text,
  int flags,
  void *opaque
){
  char *text_data = blob_buffer(text);
  size_t text_size = blob_size(text);
  while( text_size>0 && text_data[text_size-1]=='\n' ) text_size--;
  blob_append_literal(ob, "<li>");
  blob_append(ob, text_data, text_size);
  blob_append_literal(ob, "</li>\n");
}

static void html_paragraph(struct Blob *ob, struct Blob *text, void *opaque){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "<p>");
  blob_appendb(ob, text);
  blob_append_literal(ob, "</p>\n");
}


static void html_table(
  struct Blob *ob,
  struct Blob *head_row,
  struct Blob *rows,
  void *opaque
){
  INTER_BLOCK(ob);
  blob_append_literal(ob, "<table>\n");
  if( head_row && blob_size(head_row)>0 ){
    blob_append_literal(ob, "<thead>\n");
    blob_appendb(ob, head_row);
    blob_append_literal(ob, "</thead>\n<tbody>\n");
  }
  if( rows ){
    blob_appendb(ob, rows);
  }
  if( head_row && blob_size(head_row)>0 ){
    blob_append_literal(ob, "</tbody>\n");
  }
  blob_append_literal(ob, "</table>\n");
}

static void html_table_cell(
  struct Blob *ob,
  struct Blob *text,
  int flags,
  void *opaque
){
  if( flags & MKD_CELL_HEAD ){
    blob_append_literal(ob, "    <th");
  }else{
    blob_append_literal(ob, "    <td");
  }
  switch( flags & MKD_CELL_ALIGN_MASK ){
    case MKD_CELL_ALIGN_LEFT: {
      blob_append_literal(ob, " style=\"text-align:left\"");
      break;
    }
    case MKD_CELL_ALIGN_RIGHT: {
      blob_append_literal(ob, " style=\"text-align:right\"");
      break;
    }
    case MKD_CELL_ALIGN_CENTER: {
      blob_append_literal(ob, " style=\"text-align:center\"");
      break;
    }
  }
  blob_append_literal(ob, ">");
  blob_appendb(ob, text);
  if( flags & MKD_CELL_HEAD ){
    blob_append_literal(ob, "</th>\n");
  }else{
    blob_append_literal(ob, "</td>\n");
  }
}

static void html_table_row(
  struct Blob *ob,
  struct Blob *cells,
  int flags,
  void *opaque
){
  blob_append_literal(ob, "  <tr>\n");
  blob_appendb(ob, cells);
  blob_append_literal(ob, "  </tr>\n");
}

/*
** Render a token of user provided classes.
** If bHTML is true then render HTML for (presumably) visible text,
** otherwise just a space-separated list of the derived classes.
*/
static void append_footnote_upc(
  struct Blob *ob,
  const struct Blob *upc,  /* token of user-provided classes */
  int bHTML
){
  const char *z = blob_buffer(upc);
  int i, n = blob_size(upc);

  if( n<3 ) return;
  assert( z[0]=='.' && z[n-1] == ':' );
  if( bHTML ){
    blob_append_literal(ob, "<span class='fn-upc'>"
                            "<span class='fn-upcDot'>.</span>");
  }
  n = 0;
  do{
    z++;
    if( *z!='.' && *z!=':' ){
      assert( fossil_isalnum(*z) || *z=='-' );
      n++;
      continue;
    }
    assert( n );
    if(  bHTML ) blob_append_literal(ob, "<span class='");
    blob_append_literal(ob, "fn-upc-");

    for(i=-n; i<0; i++){
      blob_append_char(ob, fossil_tolower(z[i]) );
    }
    if( bHTML ){
      blob_append_literal(ob, "'>");
      blob_append(ob, z-n, n);
      blob_append_literal(ob, "</span>");
    }else{
      blob_append_char(ob, ' ');
    }
    n = 0;
    if( bHTML ){
      if( *z==':' ){
        blob_append_literal(ob,"<span class='fn-upcColon'>:</span>");
      }else{
        blob_append_literal(ob,"<span class='fn-upcDot'>.</span>");
      }
    }
  }while( *z != ':' );
  if( bHTML ) blob_append_literal(ob,"</span>\n");
}

static int html_footnote_ref(
  struct Blob *ob, const struct Blob *span, const struct Blob *upc,
  int iMark, int locus, void *opaque
){
  const struct MarkdownToHtml* ctx = (struct MarkdownToHtml*)opaque;
  const bitfield64_t l = to_base26(locus-1,0);
  char pos[32];
  memset(pos,0,32);
  assert( locus > 0 );
  /* expect BUGs if the following yields compiler warnings */
  if( iMark > 0 ){      /* a regular reference to a footnote */
    sqlite3_snprintf(sizeof(pos), pos, "%s-%d-%s", ctx->unique.c, iMark, l.c);
    if(span && blob_size(span)) {
      blob_append_literal(ob,"<span class='");
      append_footnote_upc(ob, upc, 0);
      blob_append_literal(ob,"notescope' id='noteref");
      blob_appendf(ob,"%s'>",pos);
      blob_appendb(ob, span);
      blob_trim(ob);
      blob_append_literal(ob,"<sup class='noteref'><a href='");
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob,"#footnote%s'>%d</a></sup></span>", pos, iMark);
    }else{
      blob_trim(ob);
      blob_append_literal(ob,"<sup class='");
      append_footnote_upc(ob, upc, 0);
      blob_append_literal(ob,"noteref'><a href='");
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob,"#footnote%s' id='noteref%s'>%d</a></sup>",
                      pos,           pos,  iMark);
    }
  }else{              /* misreference */
    assert( iMark == -1 );

    sqlite3_snprintf(sizeof(pos), pos, "%s-%s", ctx->unique.c, l.c);
    if(span && blob_size(span)) {
      blob_appendf(ob, "<span class='notescope' id='misref%s'>", pos);
      blob_appendb(ob, span);
      blob_trim(ob);
      blob_append_literal(ob, "<sup class='noteref misref'><a href='");
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob, "#misreference%s'>misref</a></sup></span>", pos);
    }else{
      blob_trim(ob);
      blob_append_literal(ob, "<sup class='noteref misref'><a href='");
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob, "#misreference%s' id='misref%s'>", pos, pos);
      blob_append_literal(ob, "misref</a></sup>");
    }
  }
  return 1;
}

/* Render a single item of the footnotes list.
 * Each backref gets a unique id to enable dynamic styling. */
static void html_footnote_item(
  struct Blob *ob, const struct Blob *text, int iMark, int nUsed, void *opaque
){
  const struct MarkdownToHtml* ctx = (struct MarkdownToHtml*)opaque;
  const char * const unique = ctx->unique.c;
  assert( nUsed >= 0 );
  /* expect BUGs if the following yields compiler warnings */

  if( iMark < 0 ){                     /* misreferences */
    assert( iMark == -1 );
    assert( nUsed );
    blob_append_literal(ob,"<li class='fn-misreference'>"
                              "<sup class='fn-backrefs'>");
    if( nUsed == 1 ){
      blob_appendf(ob,"<a id='misreference%s-a' href='", unique);
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob,"#misref%s-a'>^</a>", unique);
    }else{
      int i;
      blob_append_char(ob, '^');
      for(i=0; i<nUsed && i<26; i++){
        const int c = i + (unsigned)'a';
        blob_appendf(ob," <a id='misreference%s-%c' href='", unique,c);
        BLOB_APPEND_URI(ob, ctx);
        blob_appendf(ob,"#misref%s-%c'>%c</a>", unique,c, c);
      }
      if( i < nUsed ) blob_append_literal(ob," &hellip;");
    }
    blob_append_literal(ob,"</sup>\n<span>Misreference</span>");
  }else if( iMark > 0 ){  /* regular, joined and overnested footnotes */
    char pos[24];
    int bJoin = 0;
    #define _joined_footnote_indicator "<ul class='fn-joined'>"
    #define _jfi_sz (sizeof(_joined_footnote_indicator)-1)
    /* make.footnote_item() invocations should pass args accordingly */
    const struct Blob *upc = text+1;
    assert( text );
    /* allow blob_size(text)==0 for constructs like  [...](^ [] ())  */
    memset(pos,0,24);
    sqlite3_snprintf(sizeof(pos), pos, "%s-%d", unique, iMark);
    blob_appendf(ob, "<li id='footnote%s' class='", pos);
    if( nUsed ){
      if( blob_size(text)>=_jfi_sz &&
         !memcmp(blob_buffer(text),_joined_footnote_indicator,_jfi_sz)){
        bJoin = 1;
        blob_append_literal(ob, "fn-joined ");
      }
      append_footnote_upc(ob, upc, 0);
    }else{
      blob_append_literal(ob, "fn-toodeep ");
    }
    if( nUsed <= 1 ){
      blob_append_literal(ob, "fn-monoref'><sup class='fn-backrefs'>");
      blob_appendf(ob,"<a id='footnote%s-a' href='", pos);
      BLOB_APPEND_URI(ob, ctx);
      blob_appendf(ob,"#noteref%s-a'>^</a>", pos);
    }else{
      int i;
      blob_append_literal(ob, "fn-polyref'><sup class='fn-backrefs'>^");
      for(i=0; i<nUsed && i<26; i++){
        const int c = i + (unsigned)'a';
        blob_appendf(ob," <a id='footnote%s-%c' href='", pos,c);
        BLOB_APPEND_URI(ob, ctx);
        blob_appendf(ob,"#noteref%s-%c'>%c</a>", pos,c, c);
      }
      /* It's unlikely that so many backrefs will be usefull */
      /* but maybe for some machine generated documents... */
      for(; i<nUsed && i<676; i++){
        const bitfield64_t l = to_base26(i,0);
        blob_appendf(ob," <a id='footnote%s-%s' href='", pos, l.c);
        BLOB_APPEND_URI(ob, ctx);
        blob_appendf(ob,"#noteref%s-%s'>%s</a>", pos,l.c, l.c);
      }
      if( i < nUsed ) blob_append_literal(ob," &hellip;");
    }
    blob_append_literal(ob,"</sup>\n");
    if( bJoin ){
      blob_append_literal(ob,"<sup class='fn-joined'></sup><ul>");
      blob_append(ob,blob_buffer(text)+_jfi_sz,blob_size(text)-_jfi_sz);
    }else if( nUsed ){
      append_footnote_upc(ob, upc, 1);
      blob_appendb(ob, text);
    }else{
      blob_append_literal(ob,"<i></i>\n"
          "<pre><code class='language-markdown'>");
      if( blob_size(upc) ){
        blob_appendb(ob, upc);
      }
      html_escape(ob, blob_buffer(text), blob_size(text));
      blob_append_literal(ob,"</code></pre>");
    }
    #undef _joined_footnote_indicator
    #undef _jfi_sz
  }else{             /* a footnote was defined but wasn't referenced */
    /* make.footnote_item() invocations should pass args accordingly */
    const struct Blob *id = text-1, *upc = text+1;
    assert( !nUsed );
    assert( text );
    assert( blob_size(text) );
    assert( blob_size(id) );
    blob_append_literal(ob,"<li class='fn-unreferenced'>\n[^&nbsp;<code>");
    html_escape(ob, blob_buffer(id), blob_size(id));
    blob_append_literal(ob, "</code>&nbsp;]<i></i>\n"
        "<pre><code class='language-markdown'>");
    if( blob_size(upc) ){
      blob_appendb(ob, upc);
    }
    html_escape(ob, blob_buffer(text), blob_size(text));
    blob_append_literal(ob,"</code></pre>");
  }
  blob_append_literal(ob, "\n</li>\n");
}

static void html_footnotes(
  struct Blob *ob, const struct Blob *items, void *opaque
){
  if( items && blob_size(items) ){
    blob_append_literal(ob,
      "\n<hr class='footnotes-separator'/>\n<ol class='footnotes'>\n");
    blob_appendb(ob, items);
    blob_append_literal(ob, "</ol>\n");
  }
}

/* HTML span tags */

static int html_raw_html_tag(struct Blob *ob, struct Blob *text, void *opaque){
  blob_append(ob, blob_buffer(text), blob_size(text));
  return 1;
}

static int html_autolink(
  struct Blob *ob,
  struct Blob *link,
  enum mkd_autolink type,
  void *opaque
){
  if( !link || blob_size(link)<=0 ) return 0;
  blob_append_literal(ob, "<a href=\"");
  if( type==MKDA_IMPLICIT_EMAIL ) blob_append_literal(ob, "mailto:");
  html_quote(ob, blob_buffer(link), blob_size(link));
  blob_append_literal(ob, "\">");
  if( type==MKDA_EXPLICIT_EMAIL && blob_size(link)>7 ){
    /* remove "mailto:" from displayed text */
    html_escape(ob, blob_buffer(link)+7, blob_size(link)-7);
  }else{
    html_escape(ob, blob_buffer(link), blob_size(link));
  }
  blob_append_literal(ob, "</a>");
  return 1;
}

/*
** Flags for use with/via pikchr_to_html_add_flags().
*/
static int pikchrToHtmlFlags = 0;
/*
** Sets additional pikchr_process() flags to use for all future calls
** to pikch_to_html(). This is intended to be used by commands such as
** test-wiki-render and test-markdown-render to set the
** PIKCHR_PROCESS_DARK_MODE flag for all embedded pikchr elements.
**
** Not all PIKCHR_PROCESS flags are legal, as pikchr_to_html()
** hard-codes a subset of flags and passing arbitrary flags here may
** interfere with that.
**
** The only tested/intended use of this function is to pass it either
** 0 or PIKCHR_PROCESS_DARK_MODE.
**
** Design note: this is not implemented as an additional argument to
** pikchr_to_html() because the commands for which dark-mode rendering
** are now supported (test-wiki-render and test-markdown-render) are
** far removed from their corresponding pikchr_to_html() calls and
** there is no direct path from those commands to those calls. A
** cleaner, but much more invasive, approach would be to add a flag to
** markdown_to_html(), extend the WIKI_... flags with
** WIKI_DARK_PIKCHR, and extend both wiki.c:Renderer and
** markdown_html.c:MarkdownToHtml to contain and pass on that flag.
*/
void pikchr_to_html_add_flags( int f ){
  pikchrToHtmlFlags = f;
}

/*
** The nSrc bytes at zSrc[] are Pikchr input text (allegedly).  Process that
** text and insert the result in place of the original.
*/
void pikchr_to_html(
  Blob *ob,                     /* Write the generated SVG here */
  const char *zSrc, int nSrc,   /* The Pikchr source text */
  const char *zArg, int nArg    /* Addition arguments */
){
  int pikFlags = PIKCHR_PROCESS_NONCE
    | PIKCHR_PROCESS_DIV
    | PIKCHR_PROCESS_SRC
    | PIKCHR_PROCESS_ERR_PRE
    | pikchrToHtmlFlags;
  Blob bSrc = empty_blob;
  const char *zPikVar;
  double rPikVar;

  while( nArg>0 ){
    int i;
    for(i=0; i<nArg && !fossil_isspace(zArg[i]); i++){}
    if( i==6 && strncmp(zArg, "center", 6)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_CENTER;
    }else if( i==6 && strncmp(zArg, "indent", 6)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_INDENT;
    }else if( i==10 && strncmp(zArg, "float-left", 10)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_FLOAT_LEFT;
    }else if( i==11 && strncmp(zArg, "float-right", 11)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_FLOAT_RIGHT;
    }else if( i==6 && strncmp(zArg, "toggle", 6)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_TOGGLE;
    }else if( i==6 && strncmp(zArg, "source", 6)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_SOURCE;
    }else if( i==13 && strncmp(zArg, "source-inline", 13)==0 ){
      pikFlags |= PIKCHR_PROCESS_DIV_SOURCE_INLINE;
    }
    while( i<nArg && fossil_isspace(zArg[i]) ){ i++; }
    zArg += i;
    nArg -= i;
  }
  if( skin_detail_boolean("white-foreground") ){
    pikFlags |= 0x02;  /* PIKCHR_DARK_MODE */
  }
  zPikVar = skin_detail("pikchr-foreground");
  if( zPikVar && zPikVar[0] ){
    blob_appendf(&bSrc, "fgcolor = %s\n", zPikVar);
  }
  zPikVar = skin_detail("pikchr-background");
  if( zPikVar && zPikVar[0] ){
    blob_appendf(&bSrc, "bgcolor = %s\n", zPikVar);
  }
  zPikVar = skin_detail("pikchr-scale");
  if( zPikVar
   && (rPikVar = atof(zPikVar))>=0.1
   && rPikVar<10.0
  ){
    blob_appendf(&bSrc, "scale = %.13g\n", rPikVar);
  }
  zPikVar = skin_detail("pikchr-fontscale");
  if( zPikVar
   && (rPikVar = atof(zPikVar))>=0.1
   && rPikVar<10.0
  ){
    blob_appendf(&bSrc, "fontscale = %.13g\n", rPikVar);
  }
  blob_append(&bSrc, zSrc, nSrc)
    /*have to dup input to ensure a NUL-terminated source string */;
  pikchr_process(blob_str(&bSrc), pikFlags, 0, ob);
  blob_reset(&bSrc);
}

/* Invoked for `...` blocks where there are nSep grave accents in a
** row that serve as the delimiter.  According to CommonMark:
**
**   *  https://spec.commonmark.org/0.29/#fenced-code-blocks
**   *  https://spec.commonmark.org/0.29/#code-spans
**
** If nSep is 1 or 2, then this is a code-span which is inline.
** If nSep is 3 or more, then this is a fenced code block
*/
static int html_codespan(
  struct Blob *ob,    /* Write the output here */
  struct Blob *text,  /* The stuff in between the code span marks */
  int nSep,           /* Number of grave accents marks as delimiters */
  void *opaque
){
  if( text==0 ){
    /* no-op */
  }else if( nSep<=2 ){
    /* One or two graves: an in-line code span */
    blob_append_literal(ob, "<code>");
    html_escape(ob, blob_buffer(text), blob_size(text));
    blob_append_literal(ob, "</code>");
  }else{
    /* Three or more graves: a fenced code block */
    int n = blob_size(text);
    const char *z = blob_buffer(text);
    int i;
    for(i=0; i<n && z[i]!='\n'; i++){}
    if( i>=n ){
      blob_appendf(ob, "<pre><code>%#h</code></pre>", n, z);
    }else{
      int k, j;
      i++;
      for(k=0; k<i && fossil_isspace(z[k]); k++){}
      if( k==i ){
        blob_appendf(ob, "<pre><code>%#h</code></pre>", n-i, z+i);
      }else{
        for(j=k+1; j<i && !fossil_isspace(z[j]); j++){}
        if( j-k==6 && strncmp(z+k,"pikchr",6)==0 ){
          while( j<i && fossil_isspace(z[j]) ){ j++; }
          pikchr_to_html(ob, z+i, n-i, z+j, i-j);
        }else{
          blob_appendf(ob, "<pre><code class='language-%#h'>%#h</code></pre>",
                            j-k, z+k, n-i, z+i);
        }
      }
    }
  }
  return 1;
}

static int html_double_emphasis(
  struct Blob *ob,
  struct Blob *text,
  char c,
  void *opaque
){
  blob_append_literal(ob, "<strong>");
  blob_appendb(ob, text);
  blob_append_literal(ob, "</strong>");
  return 1;
}

static int html_emphasis(
  struct Blob *ob,
  struct Blob *text,
  char c,
  void *opaque
){
  blob_append_literal(ob, "<em>");
  blob_appendb(ob, text);
  blob_append_literal(ob, "</em>");
  return 1;
}

static int html_image(
  struct Blob *ob,
  struct Blob *link,
  struct Blob *title,
  struct Blob *alt,
  void *opaque
){
  blob_append_literal(ob, "<img src=\"");
  html_quote(ob, blob_buffer(link), blob_size(link));
  blob_append_literal(ob, "\" alt=\"");
  html_quote(ob, blob_buffer(alt), blob_size(alt));
  if( title && blob_size(title)>0 ){
    blob_append_literal(ob, "\" title=\"");
    html_quote(ob, blob_buffer(title), blob_size(title));
  }
  blob_append_literal(ob, "\">");
  return 1;
}

static int html_linebreak(struct Blob *ob, void *opaque){
  blob_append_literal(ob, "<br>\n");
  return 1;
}

static int html_link(
  struct Blob *ob,
  struct Blob *link,
  struct Blob *title,
  struct Blob *content,
  void *opaque
){
  char *zLink = blob_buffer(link);
  char *zTitle = title!=0 && blob_size(title)>0 ? blob_str(title) : 0;
  char zClose[20];

  if( zLink==0 || zLink[0]==0 ){
    zClose[0] = 0;
  }else{
    static const int flags =
       WIKI_NOBADLINKS |
       WIKI_MARKDOWNLINKS
    ;
    wiki_resolve_hyperlink(ob, flags, zLink, zClose, sizeof(zClose), 0, zTitle);
  }
  if( blob_size(content)==0 ){
    if( link ) blob_appendb(ob, link);
  }else{
    blob_appendb(ob, content);
  }
  blob_append(ob, zClose, -1);
  return 1;
}

static int html_triple_emphasis(
  struct Blob *ob,
  struct Blob *text,
  char c,
  void *opaque
){
  blob_append_literal(ob, "<strong><em>");
  blob_appendb(ob, text);
  blob_append_literal(ob, "</em></strong>");
  return 1;
}


static void html_normal_text(struct Blob *ob, struct Blob *text, void *opaque){
  html_escape(ob, blob_buffer(text), blob_size(text));
}

/*
** Convert markdown into HTML.
**
** The document title is placed in output_title if not NULL.  Or if
** output_title is NULL, the document title appears in the body.
*/
void markdown_to_html(
  struct Blob *input_markdown,   /* Markdown content to be rendered */
  struct Blob *output_title,     /* Put title here.  May be NULL */
  struct Blob *output_body       /* Put document body here. */
){
  struct mkd_renderer html_renderer = {
    /* prolog and epilog */
    html_prolog,
    html_epilog,
    html_footnotes,

    /* block level elements */
    html_blockcode,
    html_blockquote,
    html_blockhtml,
    html_header,
    html_hrule,
    html_list,
    html_list_item,
    html_paragraph,
    html_table,
    html_table_cell,
    html_table_row,
    html_footnote_item,

    /* span level elements */
    html_autolink,
    html_codespan,
    html_double_emphasis,
    html_emphasis,
    html_image,
    html_linebreak,
    html_link,
    html_raw_html_tag,
    html_triple_emphasis,
    html_footnote_ref,

    /* low level elements */
    0,    /* entity */
    html_normal_text,

    /* misc. parameters */
    "*_", /* emph_chars */
    0     /* opaque */
  };
  static int invocation = -1; /* no marker for the first document */
  static const char* zRU = 0; /* REQUEST_URI with escaped quotes  */
  MarkdownToHtml context;
  memset(&context, 0, sizeof(context));
  context.output_title = output_title;
  context.unique = to_base26(invocation++,1);
  if( !zRU ) zRU = escape_quotes(PD("REQUEST_URI",""));
  #ifndef FOOTNOTES_WITHOUT_URI
    blob_set( &context.reqURI, zRU );
  #endif
  html_renderer.opaque = &context;
  if( output_title ) blob_reset(output_title);
  blob_reset(output_body);
  markdown(output_body, input_markdown, &html_renderer);
}
Changes to src/md5.c.
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 * with every copy.
 *
 * To compute the message digest of a chunk of bytes, declare an
 * MD5Context structure, pass it to MD5Init, call MD5Update as
 * needed on buffers full of bytes, and then call MD5Final, which
 * will fill a supplied 16-byte array with the digest.
 */
#include "config.h"
#include <string.h>
#include <stdio.h>
#include <sqlite3.h>
#include "md5.h"

#if  0  /* defined FOSSIL_ENABLE_SSL */

/* MD5 is deprecated in OpenSSL.  So we have to fall back to our own
** implementation */

# include <openssl/md5.h>
# define MD5Context MD5_CTX
# define MD5Init MD5_Init
# define MD5Update MD5_Update
# define MD5Final MD5_Final

#else

/*
 * If compiled on a machine that doesn't have a 32-bit integer,
 * you just set "uint32" to the appropriate datatype for an
 * unsigned 32-bit integer.  For example:
 *
 *       cc -Duint32='unsigned long' md5.c
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  int isInit;
  uint32 buf[4];
  uint32 bits[2];
  unsigned char in[64];
};
typedef struct Context MD5Context;

#if defined(i386)     || defined(__i386__)   || defined(_M_IX86) ||    \
    defined(__x86_64) || defined(__x86_64__) || defined(_M_X64)  ||    \
    defined(_M_AMD64) || defined(_M_ARM)     || defined(__x86)   ||    \
    defined(__arm__)  || defined(_WIN32)
# define byteReverse(A,B)
#else
/*
 * Convert an array of integers to little-endian.
 * Note: this code is harmless on little-endian machines.
 * Note: this code is a no-op on little-endian machines.
 */
static void byteReverse (unsigned char *buf, unsigned longs){
        uint32 t;
        do {
                t = (uint32)((unsigned)buf[3]<<8 | buf[2]) << 16 |
                            ((unsigned)buf[1]<<8 | buf[0]);
                *(uint32 *)buf = t;
                buf += 4;
        } while (--longs);
}
#endif

/* The four core functions - F1 is optimized somewhat */

/* #define F1(x, y, z) (x & y | ~x & z) */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))
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}

/*
 * Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
 * initialization constants.
 */
static void MD5Init(MD5Context *ctx){
	ctx->isInit = 1;
        ctx->isInit = 1;
        ctx->buf[0] = 0x67452301;
        ctx->buf[1] = 0xefcdab89;
        ctx->buf[2] = 0x98badcfe;
        ctx->buf[3] = 0x10325476;
        ctx->bits[0] = 0;
        ctx->bits[1] = 0;
}

/*
 * Update context to reflect the concatenation of another buffer full
 * of bytes.
 */
static 
static
void MD5Update(MD5Context *pCtx, const unsigned char *buf, unsigned int len){
        struct Context *ctx = (struct Context *)pCtx;
        uint32 t;

        /* Update bitcount */

        t = ctx->bits[0];
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        /* Handle any remaining bytes of data. */

        memcpy(ctx->in, buf, len);
}

/*
 * Final wrapup - pad to 64-byte boundary with the bit pattern 
 * Final wrapup - pad to 64-byte boundary with the bit pattern
 * 1 0* (64-bit count of bits processed, MSB-first)
 */
static void MD5Final(unsigned char digest[16], MD5Context *pCtx){
        struct Context *ctx = (struct Context *)pCtx;
        unsigned count;
        unsigned char *p;

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        } else {
                /* Pad block to 56 bytes */
                memset(p, 0, count-8);
        }
        byteReverse(ctx->in, 14);

        /* Append length in bits and transform */
        ((uint32 *)ctx->in)[ 14 ] = ctx->bits[0];
        memcpy(&ctx->in[14*sizeof(uint32)], ctx->bits, 2*sizeof(uint32));
        ((uint32 *)ctx->in)[ 15 ] = ctx->bits[1];

        MD5Transform(ctx->buf, (uint32 *)ctx->in);
        byteReverse((unsigned char *)ctx->buf, 4);
        memcpy(digest, ctx->buf, 16);
        memset(ctx, 0, sizeof(ctx));    /* In case it's sensitive */
        memset(ctx, 0, sizeof(*ctx));    /* In case it's sensitive */
}
#endif

/*
** Convert a digest into base-16.  digest should be declared as
** "unsigned char digest[16]" in the calling function.  The MD5
** digest is stored in the first 16 bytes.  zBuf should
** be "char zBuf[33]".
*/
static void DigestToBase16(unsigned char *digest, char *zBuf){
  static char const zEncode[] = "0123456789abcdef";
  static const char zEncode[] = "0123456789abcdef";
  int i, j;

  for(j=i=0; i<16; i++){
    int a = digest[i];
    zBuf[j++] = zEncode[(a>>4)&0xf];
    zBuf[j++] = zEncode[a & 0xf];
  }
  zBuf[j] = 0;
}

/*
** The state of a incremental MD5 checksum computation.  Only one
** The state of an incremental MD5 checksum computation.  Only one
** such computation can be underway at a time, of course.
*/
static MD5Context incrCtx;
static int incrInit = 0;

/*
** Initialize the incremental MD5 checksum.
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/*
** Add the content of a blob to the incremental MD5 checksum.
*/
void md5sum_step_blob(Blob *p){
  md5sum_step_text(blob_buffer(p), blob_size(p));
}

/*
** For trouble-shooting only:
**
** Report the current state of the incremental checksum.
*/
const char *md5sum_current_state(void){
  unsigned int cksum = 0;
  unsigned int *pFirst, *pLast;
  static char zResult[12];

  pFirst = (unsigned int*)&incrCtx;
  pLast = (unsigned int*)((&incrCtx)+1);
  while( pFirst<pLast ){
    cksum += *pFirst;
    pFirst++;
  }
  sqlite3_snprintf(sizeof(zResult), zResult, "%08x", cksum);
  return zResult;
}

/*
** Finish the incremental MD5 checksum.  Store the result in blob pOut
** if pOut!=0.  Also return a pointer to the result.  
** if pOut!=0.  Also return a pointer to the result.
**
** This resets the incremental checksum preparing for the next round
** of computation.  The return pointer points to a static buffer that
** is overwritten by subsequent calls to this function.
*/
char *md5sum_finish(Blob *pOut){
  unsigned char zResult[16];
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  }
  return zOut;
}


/*
** Compute the MD5 checksum of a file on disk.  Store the resulting
** checksum in the blob pCksum.  pCksum is assumed to be ininitialized.
** checksum in the blob pCksum.  pCksum is assumed to be initialized.
**
** Return the number of errors.
*/
int md5sum_file(const char *zFilename, Blob *pCksum){
  FILE *in;
  MD5Context ctx;
  unsigned char zResult[16];
  char zBuf[10240];

  in = fopen(zFilename,"rb");
  in = fossil_fopen(zFilename,"rb");
  if( in==0 ){
    return 1;
  }
  MD5Init(&ctx);
  for(;;){
    int n;
    n = fread(zBuf, 1, sizeof(zBuf), in);
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  MD5Final(zResult, &ctx);
  DigestToBase16(zResult, blob_buffer(pCksum));
  return 0;
}


/*
** COMMAND: test-md5sum
** COMMAND: md5sum*
**
** Usage: %fossil md5sum FILES....
**
** Compute an MD5 checksum of all files named on the command-line.
** If an file is named "-" then take its content from standard input.
** If a file is named "-" then content is read from standard input.
*/
void md5sum_test(void){
  int i;
  Blob in;
  Blob cksum;
  

  for(i=2; i<g.argc; i++){
    blob_init(&cksum, "********** not found ***********", -1);
    if( g.argv[i][0]=='-' && g.argv[i][1]==0 ){
      blob_read_from_channel(&in, stdin, -1);
      md5sum_blob(&in, &cksum);
    }else{
      md5sum_file(g.argv[i], &cksum);
    }
    printf("%s  %s\n", blob_str(&cksum), g.argv[i]);
    fossil_print("%s  %s\n", blob_str(&cksum), g.argv[i]);
    blob_reset(&cksum);
  }
}
Added src/menu.js.





























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/* This script runs when the submenu contains controls created by routines
** like style_submenu_checkbox() or style_submenu_multichoice() - controls
** that require javascript support.
*/

function toggle_annotation_log(){
  var w = document.getElementById("annotation_log");
  var x = document.forms["f01"].elements["log"].checked
  w.style.display = x ? "block" : "none";
}
function submenu_onchange_submit(){
  var w = document.getElementById("f01");
  w.submit();
}

(function (){
  for(var i=0; 1; i++){
    var x = document.getElementById("submenuctrl-"+i);
    if(!x) break;
    if( !x.hasAttribute('data-ctrl') ){
      x.onchange = submenu_onchange_submit;
    }else{
      var cx = x.getAttribute('data-ctrl');
      if( cx=="toggle_annotation_log" ){
        x.onchange = toggle_annotation_log;
      }
    }
  }
})();
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** This file contains code used to merge two or more branches into
** a single tree.
*/
#include "config.h"
#include "merge.h"
#include <assert.h>

/*
** Print information about a particular check-in.
*/
void print_checkin_description(int rid, int indent, const char *zLabel){
  Stmt q;
  db_prepare(&q,
     "SELECT datetime(mtime,toLocal()),"
     "       coalesce(euser,user), coalesce(ecomment,comment),"
     "       (SELECT uuid FROM blob WHERE rid=%d),"
     "       (SELECT group_concat(substr(tagname,5), ', ') FROM tag, tagxref"
     "         WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid"
     "           AND tagxref.rid=%d AND tagxref.tagtype>0)"
     "  FROM event WHERE objid=%d", rid, rid, rid);
  if( db_step(&q)==SQLITE_ROW ){
    const char *zTagList = db_column_text(&q, 4);
    char *zCom;
    if( zTagList && zTagList[0] ){
      zCom = mprintf("%s (%s)", db_column_text(&q, 2), zTagList);
    }else{
      zCom = mprintf("%s", db_column_text(&q,2));

    }
    fossil_print("%-*s [%S] by %s on %s\n%*s",
       indent-1, zLabel,
       db_column_text(&q, 3),
       db_column_text(&q, 1),
       db_column_text(&q, 0),
       indent, "");
    comment_print(zCom, db_column_text(&q,2), indent, -1, get_comment_format());
    fossil_free(zCom);
  }
  db_finalize(&q);
}


/* Pick the most recent leaf that is (1) not equal to vid and (2)
** has not already been merged into vid and (3) the leaf is not
** closed and (4) the leaf is in the same branch as vid.
**
** Set vmergeFlag to control whether the vmerge table is checked.
*/
int fossil_find_nearest_fork(int vid, int vmergeFlag){
  Blob sql;
  Stmt q;
  int rid = 0;

  blob_zero(&sql);
  blob_append_sql(&sql,
    "SELECT leaf.rid"
    "  FROM leaf, event"
    " WHERE leaf.rid=event.objid"
    "   AND leaf.rid!=%d",                                /* Constraint (1) */
    vid
  );
  if( vmergeFlag ){
    blob_append_sql(&sql,
      "   AND leaf.rid NOT IN (SELECT merge FROM vmerge)"  /* Constraint (2) */
    );
  }
  blob_append_sql(&sql,
    "   AND NOT EXISTS(SELECT 1 FROM tagxref"            /* Constraint (3) */
                  "     WHERE rid=leaf.rid"
                  "       AND tagid=%d"
                  "       AND tagtype>0)"
    "   AND (SELECT value FROM tagxref"                  /* Constraint (4) */
          "   WHERE tagid=%d AND rid=%d AND tagtype>0) ="
          " (SELECT value FROM tagxref"
          "   WHERE tagid=%d AND rid=leaf.rid AND tagtype>0)"
    " ORDER BY event.mtime DESC LIMIT 1",
    TAG_CLOSED, TAG_BRANCH, vid, TAG_BRANCH
  );
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_reset(&sql);
  if( db_step(&q)==SQLITE_ROW ){
    rid = db_column_int(&q, 0);
  }
  db_finalize(&q);
  return rid;
}

/*
** Check content that was received with rcvid and return true if any
** fork was created.
*/
int fossil_any_has_fork(int rcvid){
  static Stmt q;
  int fForkSeen = 0;

  if( rcvid==0 ) return 0;
  db_static_prepare(&q,
    "  SELECT pid FROM plink WHERE pid>0 AND isprim"
    "     AND cid IN (SELECT blob.rid FROM blob"
    "   WHERE rcvid=:rcvid)");
  db_bind_int(&q, ":rcvid", rcvid);
  while( !fForkSeen && db_step(&q)==SQLITE_ROW ){
    int pid = db_column_int(&q, 0);
    if( count_nonbranch_children(pid)>1 ){
      compute_leaves(pid,1);
      if( db_int(0, "SELECT count(*) FROM leaves")>1 ){
        int rid = db_int(0, "SELECT rid FROM leaves, event"
                            " WHERE event.objid=leaves.rid"
                            " ORDER BY event.mtime DESC LIMIT 1");
        fForkSeen = fossil_find_nearest_fork(rid, db_open_local(0))!=0;
      }
    }
  }
  db_finalize(&q);
  return fForkSeen;
}

/*
** Add an entry to the FV table for all files renamed between
** version N and the version specified by vid.
*/
static void add_renames(
  const char *zFnCol, /* The FV column for the filename in vid */
  int vid,            /* The desired version's- RID */
  int nid,            /* The check-in rid for the name pivot */
  int revOK,          /* OK to move backwards (child->parent) if true */
  const char *zDebug  /* Generate trace output if not NULL */
){
  int nChng;  /* Number of file name changes */
  int *aChng; /* An array of file name changes */
  int i;      /* Loop counter */
  find_filename_changes(nid, vid, revOK, &nChng, &aChng, zDebug);
  if( nChng==0 ) return;
  for(i=0; i<nChng; i++){
    char *zN, *zV;
    zN = db_text(0, "SELECT name FROM filename WHERE fnid=%d", aChng[i*2]);
    zV = db_text(0, "SELECT name FROM filename WHERE fnid=%d", aChng[i*2+1]);
    db_multi_exec(
      "INSERT OR IGNORE INTO fv(%s,fnn) VALUES(%Q,%Q)",
      zFnCol /*safe-for-%s*/, zV, zN
    );
    if( db_changes()==0 ){
      db_multi_exec(
        "UPDATE fv SET %s=%Q WHERE fnn=%Q",
        zFnCol /*safe-for-%s*/, zV, zN
      );
    }
    free(zN);
    free(zV);
  }
  free(aChng);
}

/* Make an entry in the vmerge table for the given id, and rid.
*/
static void vmerge_insert(int id, int rid){
  db_multi_exec(
    "INSERT OR IGNORE INTO vmerge(id,merge,mhash)"
    "VALUES(%d,%d,(SELECT uuid FROM blob WHERE rid=%d))",
    id, rid, rid
  );
}

/*
** Print the contents of the "fv" table on standard output, for debugging
** purposes.
**
** Only show entries where a file has changed, unless showAll is true.
*/
static void debug_fv_dump(int showAll){
  Stmt q;
  if( showAll ){
    db_prepare(&q,
       "SELECT rowid, fn, fnp, fnm, chnged, ridv, ridp, ridm, "
       "       isexe, islinkv, islinkm, fnn FROM fv"
    );
  }else{
    db_prepare(&q,
       "SELECT rowid, fn, fnp, fnm, chnged, ridv, ridp, ridm, "
       "       isexe, islinkv, islinkm, fnn FROM fv"
       " WHERE chnged OR (ridv!=ridm AND ridm!=ridp)"
    );
  }
  while( db_step(&q)==SQLITE_ROW ){
     fossil_print("%3d: ridv=%-4d ridp=%-4d ridm=%-4d chnged=%d isexe=%d "
                  " islinkv=%d islinkm=%d\n",
        db_column_int(&q, 0),
        db_column_int(&q, 5),
        db_column_int(&q, 6),
        db_column_int(&q, 7),
        db_column_int(&q, 4),
        db_column_int(&q, 8),
        db_column_int(&q, 9),
        db_column_int(&q, 10));
     fossil_print("     fn  = [%s]\n", db_column_text(&q, 1));
     fossil_print("     fnp = [%s]\n", db_column_text(&q, 2));
     fossil_print("     fnm = [%s]\n", db_column_text(&q, 3));
     fossil_print("     fnn = [%s]\n", db_column_text(&q, 11));
  }
  db_finalize(&q);
}

/*
** Print the content of the VFILE table on standard output, for
** debugging purposes.
*/
static void debug_show_vfile(void){
  Stmt q;
  int pvid = -1;
  db_prepare(&q,
    "SELECT vid, id, chnged, deleted, isexe, islink, rid, mrid, mtime,"
          " pathname, origname, mhash FROM vfile"
    " ORDER BY vid, pathname"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int vid = db_column_int(&q, 0);
    int chnged = db_column_int(&q, 2);
    int dltd = db_column_int(&q, 3);
    int isexe = db_column_int(&q, 4);
    int islnk = db_column_int(&q, 5);
    int rid = db_column_int(&q, 6);
    int mrid = db_column_int(&q, 7);
    const char *zPath = db_column_text(&q, 9);
    const char *zOrig = db_column_text(&q, 10);
    if( vid!=pvid ){
      fossil_print("VFILE vid=%d (%z):\n", vid,
         db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid));
      pvid = vid;
    }
    fossil_print("   rid %-6d mrid %-6d %4s %3s %3s %3s %s",
       rid, mrid,
       chnged ? "chng" : "",
       dltd   ? "del" : "",
       isexe  ? "exe" : "",
       islnk  ? "lnk" : "", zPath);
    if( zOrig && zOrig[0] ){
      fossil_print(" <- %s\n", zOrig);
    }else{
      fossil_print("\n");
    }
  }
  db_finalize(&q);
}

/*
** COMMAND: test-show-vfile
** Usage:  %fossil test-show-vfile
**
** Show the content of the VFILE table in a local check-out.
*/
void test_show_vfile_cmd(void){
  if( g.argc!=2 ){
    fossil_fatal("unknown arguments to the %s command\n", g.argv[1]);
  }
  verify_all_options();
  db_must_be_within_tree();
  debug_show_vfile();
}


/*
** COMMAND: merge
** COMMAND: cherry-pick  alias
** COMMAND: cherrypick
**
** Usage: %fossil merge [--cherrypick] [--backout] VERSION
** Usage: %fossil merge ?OPTIONS? ?VERSION ...?
** Or:    %fossil cherrypick ?OPTIONS? ?VERSION ...?
**
** The argument is a version that should be merged into the current
** checkout.  All changes from VERSION back to the nearest common
** ancestor are merged.  Except, if either of the --cherrypick or
** --backout options are used only the changes associated with the
** The argument VERSION is a version that should be merged into the
** current check-out.  All changes from VERSION back to the nearest
** common ancestor are merged.  Except, if either of the --cherrypick
** or --backout options are used only the changes associated with the
** single check-in VERSION are merged.  The --backout option causes
** the changes associated with VERSION to be removed from the current
** checkout rather than added.
** check-out rather than added.  When invoked with the name
** "cherrypick" instead of "merge", this command works exactly like
** "merge --cherrypick".
**
** Only file content is merged.  The result continues to use the
** file and directory names from the current checkout even if those
** Files which are renamed in the merged-in branch will be renamed in
** the current check-out.
** names might have been changed in the branch being merged in.
**
** Other options:
** If the VERSION argument is omitted, then Fossil attempts to find
** a recent fork on the current branch to merge.
**
**   --detail                Show additional details of the merge
** If there are multiple VERSION arguments, then each VERSION is merged
** (or cherrypicked) in the order that they appear on the command-line.
**
** Options:
**   --backout               Do a reverse cherrypick merge against VERSION.
**                           In other words, back out the changes that were
**                           added by VERSION.
**   --baseline BASELINE     Use BASELINE as the "pivot" of the merge instead
**                           of the nearest common ancestor.  This allows
**                           a sequence of changes in a branch to be merged
**                           without having to merge the entire branch.
**   --binary GLOBPATTERN    Treat files that match GLOBPATTERN as binary
**                           and do not try to merge parallel changes.  This
**                           option overrides the "binary-glob" setting.
**   --cherrypick            Do a cherrypick merge VERSION into the current
**                           check-out.  A cherrypick merge pulls in the changes
**                           of the single check-in VERSION, rather than all
**                           changes back to the nearest common ancestor.
**   -f|--force              Force the merge even if it would be a no-op
**   --force-missing         Force the merge even if there is missing content
**   --integrate             Merged branch will be closed when committing
**   -K|--keep-merge-files   On merge conflict, retain the temporary files
**                           used for merging, named *-baseline, *-original,
**                           and *-merge.
**   -n|--dry-run            If given, display instead of run actions
**   --nosync                Do not auto-sync prior to merging
**   -v|--verbose            Show additional details of the merge
*/
void merge_cmd(void){
  int vid;              /* Current version */
  int mid;              /* Version we are merging against */
  int pid;              /* The pivot version - most recent common ancestor */
  int detailFlag;       /* True if the --detail option is present */
  int vid;              /* Current version "V" */
  int mid;              /* Version we are merging from "M" */
  int pid = 0;          /* The pivot version - most recent common ancestor P */
  int nid = 0;          /* The name pivot version "N" */
  int verboseFlag;      /* True if the -v|--verbose option is present */
  int integrateFlag;    /* True if the --integrate option is present */
  int pickFlag;         /* True if the --cherrypick option is present */
  int backoutFlag;      /* True if the --backout optioni is present */
  int backoutFlag;      /* True if the --backout option is present */
  int dryRunFlag;       /* True if the --dry-run or -n option is present */
  int forceFlag;        /* True if the --force or -f option is present */
  int forceMissingFlag; /* True if the --force-missing option is present */
  const char *zBinGlob; /* The value of --binary */
  const char *zPivot;   /* The value of --baseline */
  int debugFlag;        /* True if --debug is present */
  int showVfileFlag;    /* True if the --show-vfile flag is present */
  int keepMergeFlag;    /* True if --keep-merge-files is present */
  int nConflict = 0;    /* Number of conflicts seen */
  int nOverwrite = 0;   /* Number of unmanaged files overwritten */
  char vAncestor = 'p'; /* If P is an ancestor of V then 'p', else 'n' */
  const char *zVersion; /* The VERSION argument */
  int bMultiMerge = 0;  /* True if there are two or more VERSION arguments */
  int nMerge = 0;       /* Number of prior merges processed */
  Stmt q;               /* SQL statment used for merge processing */
  Stmt q;


  /* Notation:
  **
  **      V     The current check-out
  **      M     The version being merged in
  **      P     The "pivot" - the most recent common ancestor of V and M.
  **      N     The "name pivot" - for detecting renames
  */

  undo_capture_command_line();
  verboseFlag = find_option("verbose","v",0)!=0;
  forceMissingFlag = find_option("force-missing",0,0)!=0;
  if( !verboseFlag ){
  detailFlag = find_option("detail",0,0)!=0;
    verboseFlag = find_option("detail",0,0)!=0; /* deprecated */
  }
  pickFlag = find_option("cherrypick",0,0)!=0;
  if('c'==*g.zCmdName /*called as cherrypick, possibly a short form*/){
    pickFlag = 1;
  }
  integrateFlag = find_option("integrate",0,0)!=0;
  backoutFlag = find_option("backout",0,0)!=0;
  zBinGlob = find_option("binary",0,1);
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( g.argc!=3 ){
    usage("VERSION");
  }
  if( !dryRunFlag ){
    dryRunFlag = find_option("nochange",0,0)!=0; /* deprecated */
  }
  if( find_option("nosync",0,0) ) g.fNoSync = 1;
  forceFlag = find_option("force","f",0)!=0;
  zPivot = find_option("baseline",0,1);
  keepMergeFlag = find_option("keep-merge-files", "K",0)!=0;

  /* Undocumented --debug and --show-vfile options:
  **
  ** When included on the command-line, --debug causes lots of state
  ** information to be displayed.  This option is undocumented as it
  ** might change or be eliminated in future releases.
  **
  ** The --show-vfile flag does a dump of the VFILE table for reference.
  **
  ** Hints:
  **   *  Combine --debug and --verbose for still more output.
  **   *  The --dry-run option is also useful in combination with --debug.
  */
  debugFlag = find_option("debug",0,0)!=0;
  if( debugFlag && verboseFlag ) debugFlag = 2;
  showVfileFlag = find_option("show-vfile",0,0)!=0;

  verify_all_options();
  db_must_be_within_tree();
  if( zBinGlob==0 ) zBinGlob = db_get("binary-glob",0);
  vid = db_lget_int("checkout", 0);
  if( vid==0 ){
    fossil_fatal("nothing is checked out");
  }
  mid = name_to_rid(g.argv[2]);
  if( mid==0 ){
    fossil_fatal("not a version: %s", g.argv[2]);
  }
  if( mid>1 && !db_exists("SELECT 1 FROM plink WHERE cid=%d", mid) ){
    fossil_fatal("not a version: %s", g.argv[2]);
  }
  if( forceFlag==0 && leaf_is_closed(vid) ){
    fossil_fatal("cannot merge into a closed leaf. Use --force to override");
  }
  if( !dryRunFlag ){
    if( autosync_loop(SYNC_PULL + SYNC_VERBOSE*verboseFlag, 1, "merge") ){
      fossil_fatal("merge abandoned due to sync failure");
    }
  }

  /*
  ** A "multi-merge" means two or more other check-ins are being merged
  ** into the current check-in.  In other words, there are two or more
  ** VERSION arguments on the command-line.  Multi-merge works by doing
  ** the merges one by one, as long as there are no conflicts.  At the
  ** bottom of this routine, a jump is made back up to this point if there
  ** are more merges yet to be done and no errors have yet been seen.
  **
  ** Related variables:
  **    bMultiMerge       True if there are one or more merges yet to do
  **    zVersion          The name of the current checking being merged in
  **    nMerge            Number of prior merges
  */
merge_next_child:

  /* Find mid, the artifactID of the version to be merged into
  ** the current check-out.
  */
  if( g.argc>=3 ){
    int i;
    /* Mid is specified as an argument on the command-line */
    zVersion = g.argv[2];
    mid = name_to_typed_rid(zVersion, "ci");
    if( mid==0 || !is_a_version(mid) ){
      fossil_fatal("not a version: %s", zVersion);
    }
  if( pickFlag || backoutFlag ){
    pid = db_int(0, "SELECT pid FROM plink WHERE cid=%d AND isprim", mid);
    if( pid<=0 ){
      fossil_fatal("cannot find an ancestor for %s", g.argv[2]);
    bMultiMerge = g.argc>3;
    if( bMultiMerge ){
      for(i=3; i<g.argc; i++) g.argv[i-1] = g.argv[i];
      g.argc--;
    }
    if( backoutFlag ){
      int t = pid;
      pid = mid;
      mid = t;
  }else if( g.argc==2 ){
    /* No version specified on the command-line so pick the most recent
    ** leaf that is (1) not the version currently checked out and (2)
    ** has not already been merged into the current check-out and (3)
    ** the leaf is not closed and (4) the leaf is in the same branch
    ** as the current check-out.
    */
    Stmt q;
    if( pickFlag || backoutFlag || integrateFlag){
      fossil_fatal("cannot use --backout, --cherrypick or --integrate "
                   "with a fork merge");
    }
    mid = fossil_find_nearest_fork(vid, db_open_local(0));
    if( mid==0 ){
      fossil_fatal("no unmerged forks of branch \"%s\"",
        db_text(0, "SELECT value FROM tagxref"
                   " WHERE tagid=%d AND rid=%d AND tagtype>0",
                   TAG_BRANCH, vid)
      );
    }
  }else{
    pivot_set_primary(mid);
    pivot_set_secondary(vid);
    db_prepare(&q, "SELECT merge FROM vmerge WHERE id=0");
    while( db_step(&q)==SQLITE_ROW ){
      pivot_set_secondary(db_column_int(&q,0));
    db_prepare(&q,
      "SELECT blob.uuid,"
          "   datetime(event.mtime,toLocal()),"
          "   coalesce(ecomment, comment),"
          "   coalesce(euser, user)"
      "  FROM event, blob"
      " WHERE event.objid=%d AND blob.rid=%d",
      mid, mid
    );
    zVersion = 0;
    if( db_step(&q)==SQLITE_ROW ){
      char *zCom = mprintf("Merging fork [%S] at %s by %s: \"%s\"",
            db_column_text(&q, 0), db_column_text(&q, 1),
            db_column_text(&q, 3), db_column_text(&q, 2));
      comment_print(zCom, db_column_text(&q,2), 0, -1, get_comment_format());
      fossil_free(zCom);
      zVersion = mprintf("%S",db_column_text(&q,0));
    }
    db_finalize(&q);
  }else{
    usage("?OPTIONS? ?VERSION?");
    return;
  }

  if( zPivot ){
    pid = name_to_typed_rid(zPivot, "ci");
    if( pid==0 || !is_a_version(pid) ){
      fossil_fatal("not a version: %s", zPivot);
    }
    if( pickFlag ){
      fossil_fatal("incompatible options: --cherrypick and --baseline");
    }
  }
  if( pickFlag || backoutFlag ){
    if( integrateFlag ){
      fossil_fatal("incompatible options: --integrate and --cherrypick "
                   "with --backout");
    }
    pid = db_int(0, "SELECT pid FROM plink WHERE cid=%d AND isprim", mid);
    if( pid<=0 ){
      fossil_fatal("cannot find an ancestor for %s", zVersion);
    }
  }else{
    if( !zPivot ){
      pivot_set_primary(mid);
      pivot_set_secondary(vid);
      db_prepare(&q, "SELECT merge FROM vmerge WHERE id=0");
      while( db_step(&q)==SQLITE_ROW ){
        pivot_set_secondary(db_column_int(&q,0));
      }
      db_finalize(&q);
    pid = pivot_find();
    if( pid<=0 ){
      fossil_fatal("cannot find a common ancestor between the current"
                   "checkout and %s", g.argv[2]);
      pid = pivot_find(0);
      if( pid<=0 ){
        fossil_fatal("cannot find a common ancestor between the current "
                     "check-out and %s", zVersion);
      }
    }
    pivot_set_primary(mid);
    pivot_set_secondary(vid);
    nid = pivot_find(1);
    if( nid!=pid ){
      pivot_set_primary(nid);
      pivot_set_secondary(pid);
      nid = pivot_find(1);
    }
  }
  if( backoutFlag ){
    int t = pid;
    pid = mid;
    mid = t;
  }
  if( nid==0 ) nid = pid;
  if( pid>1 && !db_exists("SELECT 1 FROM plink WHERE cid=%d", pid) ){
    fossil_fatal("not a version: record #%d", mid);
  if( !is_a_version(pid) ){
    fossil_fatal("not a version: record #%d", pid);
  }
  if( !forceFlag && mid==pid ){
    fossil_print("Merge skipped because it is a no-op. "
                 " Use --force to override.\n");
    return;
  }
  if( integrateFlag && !is_a_leaf(mid)){
    fossil_warning("ignoring --integrate: %s is not a leaf", zVersion);
    integrateFlag = 0;
  }
  if( integrateFlag && content_is_private(mid) ){
    fossil_warning(
      "ignoring --integrate: %s is on a private branch"
      "\n Use \"fossil amend --close\" (after commit) to close the leaf.",
      zVersion);
    integrateFlag = 0;
  }
  if( verboseFlag ){
    print_checkin_description(mid, 12,
              integrateFlag ? "integrate:" : "merge-from:");
    print_checkin_description(pid, 12, "baseline:");
  }
  vfile_check_signature(vid, 1);
  db_begin_transaction();
  undo_begin();
  load_vfile_from_rid(mid);
  load_vfile_from_rid(pid);

  vfile_check_signature(vid, CKSIG_ENOTFILE);
  if( nMerge==0 ) db_begin_transaction();
  if( !dryRunFlag ) undo_begin();
  if( load_vfile_from_rid(mid) && !forceMissingFlag ){
    fossil_fatal("missing content, unable to merge");
  }
  if( load_vfile_from_rid(pid) && !forceMissingFlag ){
    fossil_fatal("missing content, unable to merge");
  }
  if( zPivot ){
    vAncestor = db_exists(
      "WITH RECURSIVE ancestor(id) AS ("
      "  VALUES(%d)"
      "  UNION"
      "  SELECT pid FROM plink, ancestor"
      "   WHERE cid=ancestor.id AND pid!=%d AND cid!=%d)"
      "SELECT 1 FROM ancestor WHERE id=%d LIMIT 1",
      vid, nid, pid, pid
    ) ? 'p' : 'n';
  }
  if( debugFlag ){
    char *z;
    z = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", nid);
    fossil_print("N=%-4d %z (file rename pivot)\n", nid, z);
    z = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", pid);
    fossil_print("P=%-4d %z (file content pivot)\n", pid, z);
    z = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", mid);
    fossil_print("M=%-4d %z (merged-in version)\n", mid, z);
    z = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
    fossil_print("V=%-4d %z (current version)\n", vid, z);
    fossil_print("vAncestor = '%c'\n", vAncestor);
  }
  if( showVfileFlag ) debug_show_vfile();

  /*
  ** The vfile.pathname field is used to match files against each other.  The
  ** FV table contains one row for each each unique filename in
  ** in the current checkout, the pivot, and the version being merged.
  ** in the current check-out, the pivot, and the version being merged.
  */
  db_multi_exec(
    "DROP TABLE IF EXISTS fv;"
    "CREATE TEMP TABLE fv("
    "  fn TEXT PRIMARY KEY,"      /* The filename */
    "  idv INTEGER,"              /* VFILE entry for current version */
    "  idp INTEGER,"              /* VFILE entry for the pivot */
    "  idm INTEGER,"              /* VFILE entry for version merging in */
    "  chnged BOOLEAN,"           /* True if current version has been edited */
    "  ridv INTEGER,"             /* Record ID for current version */
    "  ridp INTEGER,"             /* Record ID for pivot */
    "  ridm INTEGER"              /* Record ID for merge */
    ");"
    "CREATE TEMP TABLE fv(\n"
    "  fn TEXT UNIQUE %s,\n"       /* The filename */
    "  idv INTEGER DEFAULT 0,\n"   /* VFILE entry for current version */
    "  idp INTEGER DEFAULT 0,\n"   /* VFILE entry for the pivot */
    "  idm INTEGER DEFAULT 0,\n"   /* VFILE entry for version merging in */
    "  chnged BOOLEAN,\n"          /* True if current version has been edited */
    "  ridv INTEGER DEFAULT 0,\n"  /* Record ID for current version */
    "  ridp INTEGER DEFAULT 0,\n"  /* Record ID for pivot */
    "  ridm INTEGER DEFAULT 0,\n"  /* Record ID for merge */
    "  isexe BOOLEAN,\n"           /* Execute permission enabled */
    "  fnp TEXT UNIQUE %s,\n"      /* The filename in the pivot */
    "  fnm TEXT UNIQUE %s,\n"      /* The filename in the merged version */
    "  fnn TEXT UNIQUE %s,\n"      /* The filename in the name pivot */
    "  islinkv BOOLEAN,\n"         /* True if current version is a symlink */
    "  islinkm BOOLEAN\n"          /* True if merged version in is a symlink */
    ");",
    "INSERT OR IGNORE INTO fv"
    " SELECT pathname, 0, 0, 0, 0, 0, 0, 0 FROM vfile"
    filename_collation(), filename_collation(), filename_collation(),
    filename_collation()
  );
  db_prepare(&q,
    "SELECT id, pathname, rid FROM vfile"
    " WHERE vid=%d", pid
  );

  /*
  ** Compute name changes from N to V, P, and M
  */
  add_renames("fn", vid, nid, 0, debugFlag ? "N->V" : 0);
  add_renames("fnp", pid, nid, 0, debugFlag ? "N->P" : 0);
  add_renames("fnm", mid, nid, backoutFlag, debugFlag ? "N->M" : 0);
  if( debugFlag ){
    fossil_print("******** FV after name change search *******\n");
    debug_fv_dump(1);
  while( db_step(&q)==SQLITE_ROW ){
    int id = db_column_int(&q, 0);
  }
  if( nid!=pid ){
    const char *fn = db_column_text(&q, 1);
    int rid = db_column_int(&q, 2);
    /* See forum thread https://fossil-scm.org/forum/forumpost/549700437b
    **
    ** If a filename changes between nid and one of the other check-ins
    ** pid, vid, or mid, then it might not have changed for all of them.
    ** try to fill in the appropriate filename in all slots where the
    ** name is missing.
    **
    ** This does not work if
    **   (1) The filename changes more than once in between nid and vid/mid
    **   (2) Two or more filenames swap places - for example if A is renamed
    **       to B and B is renamed to A.
    ** The Fossil merge algorithm breaks down in those cases.  It will need
    ** to be completely rewritten to handle such complex cases.  Such cases
    ** appear to be rare, and also confusing to humans.
    */
    db_multi_exec(
      "UPDATE fv SET idp=%d, ridp=%d WHERE fn=%Q",
      id, rid, fn
      "UPDATE OR IGNORE fv SET fnp=vfile.pathname FROM vfile"
      " WHERE fnp IS NULL"
    );
  }
  db_finalize(&q);
  db_prepare(&q,
    "SELECT id, pathname, rid FROM vfile"
    " WHERE vid=%d", mid
  );
  while( db_step(&q)==SQLITE_ROW ){
      " AND vfile.pathname = fv.fnn"
      " AND vfile.vid=%d;",
      pid
    );
    db_multi_exec(
    int id = db_column_int(&q, 0);
    const char *fn = db_column_text(&q, 1);
    int rid = db_column_int(&q, 2);
      "UPDATE OR IGNORE fv SET fn=vfile.pathname FROM vfile"
      " WHERE fn IS NULL"
      " AND vfile.pathname = coalesce(fv.fnp,fv.fnn)"
      " AND vfile.vid=%d;",
      vid
    );
    db_multi_exec(
      "UPDATE OR IGNORE fv SET fnm=vfile.pathname FROM vfile"
      "UPDATE fv SET idm=%d, ridm=%d WHERE fn=%Q",
      id, rid, fn
      " WHERE fnm IS NULL"
      " AND vfile.pathname = coalesce(fv.fnp,fv.fnn)"
      " AND vfile.vid=%d;",
      mid
    );
  }
  db_finalize(&q);
  db_prepare(&q,
    "SELECT id, pathname, rid, chnged FROM vfile"
    " WHERE vid=%d", vid
  );
    db_multi_exec(
      "UPDATE OR IGNORE fv SET fnp=vfile.pathname FROM vfile"
      " WHERE fnp IS NULL"
      " AND vfile.pathname IN (fv.fnm,fv.fn)"
      " AND vfile.vid=%d;",
      pid
    );
    db_multi_exec(
      "UPDATE OR IGNORE fv SET fn=vfile.pathname FROM vfile"
      " WHERE fn IS NULL"
      " AND vfile.pathname = fv.fnm"
      " AND vfile.vid=%d;",
      vid
    );
  while( db_step(&q)==SQLITE_ROW ){
    int id = db_column_int(&q, 0);
    const char *fn = db_column_text(&q, 1);
    int rid = db_column_int(&q, 2);
    int chnged = db_column_int(&q, 3);
    db_multi_exec(
      "UPDATE OR IGNORE fv SET fnm=vfile.pathname FROM vfile"
      "UPDATE fv SET idv=%d, ridv=%d, chnged=%d WHERE fn=%Q",
      id, rid, chnged, fn
      " WHERE fnm IS NULL"
      " AND vfile.pathname = fv.fn"
      " AND vfile.vid=%d;",
      mid
    );
  }
  if( debugFlag ){
    fossil_print("******** FV after name change fill-in *******\n");
    debug_fv_dump(1);
  }
  db_finalize(&q);


  /*
  ** Add files found in V
  */
  db_multi_exec(
    "UPDATE OR IGNORE fv SET fn=coalesce(fn%c,fnn) WHERE fn IS NULL;"
    "REPLACE INTO fv(fn,fnp,fnm,fnn,idv,ridv,islinkv,isexe,chnged)"
    " SELECT pathname, fnp, fnm, fnn, id, rid, islink, vf.isexe, vf.chnged"
    "   FROM vfile vf"
    "   LEFT JOIN fv ON fn=coalesce(origname,pathname)"
    "    AND rid>0 AND vf.chnged NOT IN (3,5)"
    "  WHERE vid=%d;",
    vAncestor, vid
  );
  if( debugFlag>=2 ){
    fossil_print("******** FV after adding files in current version *******\n");
    debug_fv_dump(1);
  }

  /*
  ** Find files in mid and vid but not in pid and report conflicts.
  ** The file in mid will be ignored.  It will be treated as if it
  ** does not exist.
  ** Add files found in P
  */
  db_prepare(&q,
    "SELECT idm FROM fv WHERE idp=0 AND idv>0 AND idm>0"
  db_multi_exec(
    "UPDATE OR IGNORE fv SET fnp=coalesce(fnn,"
    "   (SELECT coalesce(origname,pathname) FROM vfile WHERE id=idv))"
    " WHERE fnp IS NULL;"
    "INSERT OR IGNORE INTO fv(fnp)"
    " SELECT coalesce(origname,pathname) FROM vfile WHERE vid=%d;",
    pid
  );
  if( debugFlag>=2 ){
    fossil_print("******** FV after adding pivot files *******\n");
    debug_fv_dump(1);
  }
  while( db_step(&q)==SQLITE_ROW ){
    int idm = db_column_int(&q, 0);
    char *zName = db_text(0, "SELECT pathname FROM vfile WHERE id=%d", idm);

  /*
  ** Add files found in M
  */
  db_multi_exec(
    "UPDATE OR IGNORE fv SET fnm=fnp WHERE fnm IS NULL;"
    "INSERT OR IGNORE INTO fv(fnm)"
    " SELECT pathname FROM vfile WHERE vid=%d;",
    printf("WARNING: conflict on %s\n", zName);
    free(zName);
    mid
  );
    db_multi_exec("UPDATE fv SET idm=0 WHERE idm=%d", idm);
  if( debugFlag>=2 ){
    fossil_print("******** FV after adding merge-in files *******\n");
    debug_fv_dump(1);
  }
  db_finalize(&q);


  /*
  ** Compute the file version ids for P and M
  */
  if( pid==vid ){
    db_multi_exec(
      "UPDATE fv SET idp=idv, ridp=ridv WHERE ridv>0 AND chnged NOT IN (3,5)"
    );
  }else{
    db_multi_exec(
      "UPDATE fv SET idp=coalesce(vfile.id,0), ridp=coalesce(vfile.rid,0)"
      "  FROM vfile"
      " WHERE vfile.vid=%d AND fv.fnp=vfile.pathname",
      pid
    );
  }
  db_multi_exec(
    "UPDATE fv SET"
    " idm=coalesce(vfile.id,0),"
    " ridm=coalesce(vfile.rid,0),"
    " islinkm=coalesce(vfile.islink,0),"
    " isexe=coalesce(vfile.isexe,fv.isexe)"
    " FROM vfile"
    " WHERE vid=%d AND fnm=pathname",
    mid
  );

  /*
  ** Add to vid files that are not in pid but are in mid
  ** Update the execute bit on files where it's changed from P->M but not P->V
  */
  db_prepare(&q, 
    "SELECT idm, rowid, fn FROM fv WHERE idp=0 AND idv=0 AND idm>0"
  db_prepare(&q,
    "SELECT idv, fn, fv.isexe FROM fv, vfile p, vfile v"
    " WHERE p.id=idp AND v.id=idv AND fv.isexe!=p.isexe AND v.isexe=p.isexe"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int idm = db_column_int(&q, 0);
    int idv = db_column_int(&q, 0);
    int rowid = db_column_int(&q, 1);
    int idv;
    const char *zName;
    const char *zName = db_column_text(&q, 1);
    db_multi_exec(
      "INSERT INTO vfile(vid,chnged,deleted,rid,mrid,pathname)"
      "  SELECT %d,3,0,rid,mrid,pathname FROM vfile WHERE id=%d",
      vid, idm
    );
    idv = db_last_insert_rowid();
    db_multi_exec("UPDATE fv SET idv=%d WHERE rowid=%d", idv, rowid);
    zName = db_column_text(&q, 2);
    printf("ADDED %s\n", zName);
    undo_save(zName);
    vfile_to_disk(0, idm, 0);
  }
    int isExe = db_column_int(&q, 2);
    fossil_print("%s %s\n", isExe ? "EXECUTABLE" : "UNEXEC", zName);
    if( !dryRunFlag ){
      char *zFullPath = mprintf("%s/%s", g.zLocalRoot, zName);
      file_setexe(zFullPath, isExe);
      free(zFullPath);
      db_multi_exec("UPDATE vfile SET isexe=%d WHERE id=%d", isExe, idv);
    }
  }
  db_finalize(&q);
  if( debugFlag ){
    fossil_print("******** FV final *******\n");
    debug_fv_dump( debugFlag>=2 );
  
  /*
  ** Find files that have changed from pid->mid but not pid->vid. 
  ** Copy the mid content over into vid.
  }

  /************************************************************************
  ** All of the information needed to do the merge is now contained in the
  ** FV table.  Starting here, we begin to actually carry out the merge.
  **
  ** First, find files that have changed from P->M but not P->V.
  ** Copy the M content over into V.
  */
  db_prepare(&q,
    "SELECT idv, ridm FROM fv"
    "SELECT idv, ridm, fn, islinkm FROM fv"
    " WHERE idp>0 AND idv>0 AND idm>0"
    "   AND ridm!=ridp AND ridv=ridp AND NOT chnged"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int idv = db_column_int(&q, 0);
    int ridm = db_column_int(&q, 1);
    char *zName = db_text(0, "SELECT pathname FROM vfile WHERE id=%d", idv);
    const char *zName = db_column_text(&q, 2);
    int islinkm = db_column_int(&q, 3);
    /* Copy content from idm over into idv.  Overwrite idv. */
    printf("UPDATE %s\n", zName);
    undo_save(zName);
    db_multi_exec(
      "UPDATE vfile SET mrid=%d, chnged=2 WHERE id=%d", ridm, idv
    );
    vfile_to_disk(0, idv, 0);
    fossil_print("UPDATE %s\n", zName);
    if( !dryRunFlag ){
      undo_save(zName);
      db_multi_exec(
        "UPDATE vfile SET mtime=0, mrid=%d, chnged=%d, islink=%d,"
        " mhash=CASE WHEN rid<>%d"
                   " THEN (SELECT uuid FROM blob WHERE blob.rid=%d) END"
        " WHERE id=%d", ridm, integrateFlag?4:2, islinkm, ridm, ridm, idv
      );
      vfile_to_disk(0, idv, 0, 0);
    free(zName);
    }
  }
  db_finalize(&q);

  /*
  ** Do a three-way merge on files that have changes pid->mid and pid->vid
  ** Do a three-way merge on files that have changes on both P->M and P->V.
  **
  ** Proceed even if the file doesn't exist on P, just like the common ancestor
  ** of M and V is an empty file. In this case, merge conflict marks will be
  ** added to the file and user will be forced to take a decision.
  */
  db_prepare(&q,
    "SELECT ridm, idv, ridp, ridv, %s FROM fv"
    " WHERE idp>0 AND idv>0 AND idm>0"
    "SELECT ridm, idv, ridp, ridv, %s, fn, isexe, islinkv, islinkm FROM fv"
    " WHERE idv>0 AND idm>0"
    "   AND ridm!=ridp AND (ridv!=ridp OR chnged)",
    glob_expr("fv.fn", zBinGlob)
  );
  while( db_step(&q)==SQLITE_ROW ){
    int ridm = db_column_int(&q, 0);
    int idv = db_column_int(&q, 1);
    int ridp = db_column_int(&q, 2);
    int ridv = db_column_int(&q, 3);
    int isBinary = db_column_int(&q, 4);
    const char *zName = db_column_text(&q, 5);
    int isExe = db_column_int(&q, 6);
    int islinkv = db_column_int(&q, 7);
    int islinkm = db_column_int(&q, 8);
    int rc;
    char *zName = db_text(0, "SELECT pathname FROM vfile WHERE id=%d", idv);
    char *zFullPath;
    Blob m, p, v, r;
    Blob m, p, r;
    /* Do a 3-way merge of idp->idm into idp->idv.  The results go into idv. */
    if( detailFlag ){
      printf("MERGE %s  (pivot=%d v1=%d v2=%d)\n", zName, ridp, ridm, ridv);
    if( verboseFlag ){
      fossil_print("MERGE %s  (pivot=%d v1=%d v2=%d)\n",
                   zName, ridp, ridm, ridv);
    }else{
      printf("MERGE %s\n", zName);
      fossil_print("MERGE %s\n", zName);
    }
    if( islinkv || islinkm ){
      fossil_print("***** Cannot merge symlink %s\n", zName);
      nConflict++;
    }else{
    undo_save(zName);
    zFullPath = mprintf("%s/%s", g.zLocalRoot, zName);
    content_get(ridp, &p);
    content_get(ridm, &m);
      if( !dryRunFlag ) undo_save(zName);
      zFullPath = mprintf("%s/%s", g.zLocalRoot, zName);
      content_get(ridp, &p);
      content_get(ridm, &m);
    blob_zero(&v);
    blob_read_from_file(&v, zFullPath);
    if( isBinary ){
      rc = -1;
      blob_zero(&r);
    }else{
      rc = blob_merge(&p, &m, &v, &r);
    }
    if( rc>=0 ){
      blob_write_to_file(&r, zFullPath);
      if( rc>0 ){
        printf("***** %d merge conflicts in %s\n", rc, zName);
      }
    }else{
      printf("***** Cannot merge binary file %s\n", zName);
    }
      if( isBinary ){
        rc = -1;
        blob_zero(&r);
      }else{
        unsigned mergeFlags = dryRunFlag ? MERGE_DRYRUN : 0;
        if(keepMergeFlag!=0) mergeFlags |= MERGE_KEEP_FILES;
        rc = merge_3way(&p, zFullPath, &m, &r, mergeFlags);
      }
      if( rc>=0 ){
        if( !dryRunFlag ){
          blob_write_to_file(&r, zFullPath);
          file_setexe(zFullPath, isExe);
        }
        db_multi_exec("UPDATE vfile SET mtime=0 WHERE id=%d", idv);
        if( rc>0 ){
          fossil_print("***** %d merge conflict%s in %s\n",
                       rc, rc>1 ? "s" : "", zName);
          nConflict++;
        }
      }else{
        fossil_print("***** Cannot merge binary file %s\n", zName);
        nConflict++;
      }
    free(zName);
    blob_reset(&p);
    blob_reset(&m);
      blob_reset(&p);
      blob_reset(&m);
    blob_reset(&v);
    blob_reset(&r);
      blob_reset(&r);
    db_multi_exec("INSERT OR IGNORE INTO vmerge(id,merge) VALUES(%d,%d)",
                  idv,ridm);
    }
    vmerge_insert(idv, ridm);
  }
  db_finalize(&q);

  /*
  ** Drop files from vid that are in pid but not in mid
  ** Drop files that are in P and V but not in M
  */
  db_prepare(&q,
    "SELECT idv FROM fv"
    "SELECT idv, fn, chnged FROM fv"
    " WHERE idp>0 AND idv>0 AND idm=0"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int idv = db_column_int(&q, 0);
    char *zName = db_text(0, "SELECT pathname FROM vfile WHERE id=%d", idv);
    const char *zName = db_column_text(&q, 1);
    int chnged = db_column_int(&q, 2);
    /* Delete the file idv */
    printf("DELETE %s\n", zName);
    undo_save(zName);
    fossil_print("DELETE %s\n", zName);
    if( chnged ){
      fossil_warning("WARNING: local edits lost for %s", zName);
      nConflict++;
    }
    if( !dryRunFlag ) undo_save(zName);
    db_multi_exec(
      "UPDATE vfile SET deleted=1 WHERE id=%d", idv
    );
    if( !dryRunFlag ){
      char *zFullPath = mprintf("%s%s", g.zLocalRoot, zName);
      file_delete(zFullPath);
      free(zFullPath);
    }
  }
  db_finalize(&q);

  /* For certain sets of renames (e.g. A -> B and B -> A), a file that is
  ** being renamed must first be moved to a temporary location to avoid
  ** being overwritten by another rename operation. A row is added to the
  ** TMPRN table for each of these temporary renames.
  */
  db_multi_exec(
    "DROP TABLE IF EXISTS tmprn;"
    "CREATE TEMP TABLE tmprn(fn UNIQUE, tmpfn);"
  );

  /*
  ** Rename files that have taken a rename on P->M but which keep the same
  ** name on P->V.  If a file is renamed on P->V only or on both P->V and
  ** P->M then we retain the V name of the file.
  */
  db_prepare(&q,
    "SELECT idv, fnp, fnm, isexe FROM fv"
    " WHERE idv>0 AND idp>0 AND idm>0 AND fnp=fn AND fnm!=fnp"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int idv = db_column_int(&q, 0);
    const char *zOldName = db_column_text(&q, 1);
    const char *zNewName = db_column_text(&q, 2);
    int isExe = db_column_int(&q, 3);
    fossil_print("RENAME %s -> %s\n", zOldName, zNewName);
    if( !dryRunFlag ) undo_save(zOldName);
    if( !dryRunFlag ) undo_save(zNewName);
    db_multi_exec(
      "UPDATE vfile SET pathname=NULL, origname=pathname"
      " WHERE vid=%d AND pathname=%Q;"
      "UPDATE vfile SET pathname=%Q, origname=coalesce(origname,pathname)"
      " WHERE id=%d;",
      vid, zNewName, zNewName, idv
    );
    if( !dryRunFlag ){
      char *zFullOldPath, *zFullNewPath;
      zFullOldPath = db_text(0,"SELECT tmpfn FROM tmprn WHERE fn=%Q", zOldName);
      if( !zFullOldPath ){
        zFullOldPath = mprintf("%s%s", g.zLocalRoot, zOldName);
      }
      zFullNewPath = mprintf("%s%s", g.zLocalRoot, zNewName);
      if( file_size(zFullNewPath, RepoFILE)>=0 ){
        Blob tmpPath;
        file_tempname(&tmpPath, "", 0);
        db_multi_exec("INSERT INTO tmprn(fn,tmpfn) VALUES(%Q,%Q)",
                      zNewName, blob_str(&tmpPath));
        if( file_islink(zFullNewPath) ){
          symlink_copy(zFullNewPath, blob_str(&tmpPath));
        }else{
          file_copy(zFullNewPath, blob_str(&tmpPath));
        }
        blob_reset(&tmpPath);
      }
      if( file_islink(zFullOldPath) ){
        symlink_copy(zFullOldPath, zFullNewPath);
      }else{
        file_copy(zFullOldPath, zFullNewPath);
      }
      file_setexe(zFullNewPath, isExe);
      file_delete(zFullOldPath);
      free(zFullNewPath);
      free(zFullOldPath);
    }
  }
  db_finalize(&q);

  /* A file that has been deleted and replaced by a renamed file will have a
  ** NULL pathname. Change it to something that makes the output of "status"
  ** and similar commands make sense for such files and that will (most likely)
  ** not be an actual existing pathname.
  */
  db_multi_exec(
    "UPDATE vfile SET pathname=origname || ' (overwritten by rename)'"
    " WHERE pathname IS NULL"
  );

  /*
  ** Insert into V any files that are not in V or P but are in M.
  */
  db_prepare(&q,
    "SELECT idm, fnm FROM fv"
    " WHERE idp=0 AND idv=0 AND idm>0"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int idm = db_column_int(&q, 0);
    const char *zName;
    char *zFullName;
    db_multi_exec(
      "REPLACE INTO vfile(vid,chnged,deleted,rid,mrid,"
                         "isexe,islink,pathname,mhash)"
      "  SELECT %d,%d,0,rid,mrid,isexe,islink,pathname,"
              "CASE WHEN rid<>mrid"
              "     THEN (SELECT uuid FROM blob WHERE blob.rid=vfile.mrid) END "
              "FROM vfile WHERE id=%d",
      vid, integrateFlag?5:3, idm
    );
    zName = db_column_text(&q, 1);
    zFullName = mprintf("%s%s", g.zLocalRoot, zName);
    if( file_isfile_or_link(zFullName)
        && !db_exists("SELECT 1 FROM fv WHERE fn=%Q", zName) ){
      /* Name of backup file with Original content */
      char *zOrig = file_newname(zFullName, "original", 1);
      /* Backup previously unanaged file before to be overwritten */
      file_copy(zFullName, zOrig);
      fossil_free(zOrig);
      fossil_print("ADDED %s (overwrites an unmanaged file)", zName);
      if( !dryRunFlag ) fossil_print(", original copy backed up locally");
      fossil_print("\n");
      nOverwrite++;
    }else{
      fossil_print("ADDED %s\n", zName);
    }
    fossil_free(zFullName);
    if( !dryRunFlag ){
    free(zName);
      undo_save(zName);
      vfile_to_disk(0, idm, 0, 0);
    }
  }
  db_finalize(&q);
  

  /* Report on conflicts
  */
  if( nConflict ){
    fossil_warning("WARNING: %d merge conflicts", nConflict);
    if( bMultiMerge ){
      int i;
      Blob msg;
      blob_init(&msg, 0, 0);
      blob_appendf(&msg,
         "The following %ss were not attempted due to prior conflicts:",
         pickFlag ? "cherrypick" : backoutFlag ? "backout" : "merge"
      );
      for(i=2; i<g.argc; i++){
        blob_appendf(&msg, " %s", g.argv[i]);
      }
      fossil_warning("%s", blob_str(&msg));
      blob_zero(&msg);
    }
  }
  if( nOverwrite ){
    fossil_warning("WARNING: %d unmanaged files were overwritten",
                   nOverwrite);
  }
  if( dryRunFlag && !bMultiMerge ){
    fossil_warning("REMINDER: this was a dry run -"
                   " no files were actually changed.");
  }

  /*
  ** Clean up the mid and pid VFILE entries.  Then commit the changes.
  */
  db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);
  if( !pickFlag ){
    db_multi_exec("INSERT OR IGNORE INTO vmerge(id,merge) VALUES(0,%d)", mid);
  if( pickFlag ){
    vmerge_insert(-1, mid);
    /* For a cherrypick merge, make the default check-in comment the same
    ** as the check-in comment on the check-in that is being merged in. */
    db_multi_exec(
       "REPLACE INTO vvar(name,value)"
       " SELECT 'ci-comment', coalesce(ecomment,comment) FROM event"
       "  WHERE type='ci' AND objid=%d",
       mid
    );
  }else if( backoutFlag ){
    vmerge_insert(-2, pid);
  }else if( integrateFlag ){
    vmerge_insert(-4, mid);
  }else{
    vmerge_insert(0, mid);
  }
  if( bMultiMerge && nConflict==0 ){
    nMerge++;
    goto merge_next_child;
  }
  undo_finish();
  db_end_transaction(0);
  if( !dryRunFlag ) undo_finish();

  db_end_transaction(dryRunFlag);
}
Changes to src/merge3.c.
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+




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-
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#define ISDEBUG 1
#else
#define DEBUG(X)
#define ISDEBUG 0
#endif

/* The minimum of two integers */
#ifndef min
#define min(A,B)  (A<B?A:B)
#  define min(A,B)  (A<B?A:B)
#endif

/*
** Compare N lines of text from pV1 and pV2.  If the lines
** are the same, return true.  Return false if one or more of the N
** lines are different.
**
** The cursors on both pV1 and pV2 is unchanged by this comparison.
*/
static int sameLines(Blob *pV1, Blob *pV2, int N){
  char *z1, *z2;
  int i;
  char c;

  if( N==0 ) return 1;
  z1 = &blob_buffer(pV1)[blob_tell(pV1)];
  z2 = &blob_buffer(pV2)[blob_tell(pV2)];
  for(i=0; z1[i]==z2[i]; i++){
    if( z1[i]=='\n' ){
  for(i=0; (c=z1[i])==z2[i]; i++){
    if( c=='\n' || c==0 ){
      N--;
      if( N==0 ) return 1;
      if( N==0 || c==0 ) return 1;
    }
  }
  return 0;
}

/*
** Look at the next edit triple in both aC1 and aC2.  (An "edit triple" is
** three integers describing the number of copies, deletes, and inserts in
** moving from the original to the edited copy of the file.) If the three
** integers of the edit triples describe an identical edit, then return 1.  
** integers of the edit triples describe an identical edit, then return 1.
** If the edits are different, return 0.
*/
static int sameEdit(
  int *aC1,      /* Array of edit integers for file 1 */
  int *aC2,      /* Array of edit integers for file 2 */
  Blob *pV1,     /* Text of file 1 */
  Blob *pV2      /* Text of file 2 */
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** The aC[] array contains triples of integers.  Within each triple, the
** elements are:
**
**   (0)  The number of lines to copy
**   (1)  The number of lines to delete
**   (2)  The number of liens to insert
**
** Suppose we want to advance over sz lines of the originl file.  This routine
** Suppose we want to advance over sz lines of the original file.  This routine
** returns true if that advance would land us on a copy operation.  It
** returns false if the advance would end on a delete.
*/
static int ends_at_CPY(int *aC, int sz){
  while( sz>0 && (aC[0]>0 || aC[1]>0 || aC[2]>0) ){
    if( aC[0]>=sz ) return 1;
    sz -= aC[0];
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** The aC[] array is updated and the new index into aC[] is returned.
*/
static int output_one_side(
  Blob *pOut,     /* Write to this blob */
  Blob *pSrc,     /* The edited file that is to be copied to pOut */
  int *aC,        /* Array of integer triples describing the edit */
  int i,          /* Index in aC[] of current location in pSrc */
  int sz          /* Number of lines in unedited source to output */
  int sz,         /* Number of lines in unedited source to output */
  int *pLn        /* Line number counter */
){
  while( sz>0 ){
    if( aC[i]==0 && aC[i+1]==0 && aC[i+2]==0 ) break;
    if( aC[i]>=sz ){
      blob_copy_lines(pOut, pSrc, sz);
      blob_copy_lines(pOut, pSrc, sz);  *pLn += sz;
      aC[i] -= sz;
      break;
    }
    blob_copy_lines(pOut, pSrc, aC[i]);
    blob_copy_lines(pOut, pSrc, aC[i+2]);
    blob_copy_lines(pOut, pSrc, aC[i]);      *pLn += aC[i];
    blob_copy_lines(pOut, pSrc, aC[i+2]);    *pLn += aC[i+2];
    sz -= aC[i] + aC[i+1];
    i += 3;
  }
  return i;
}

/*
** Text of boundary markers for merge conflicts.
*/
static const char *const mergeMarker[] = {
 /*123456789 123456789 123456789 123456789 123456789 123456789 123456789*/
  "<<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<<",
  "||||||| COMMON ANCESTOR content follows |||||||||||||||||||||||||",
  "======= MERGED IN content follows ===============================",
  ">>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"
};

/*
** Return true if the input blob contains any CR/LF pairs on the first
** ten lines. This should be enough to detect files that use mainly CR/LF
** line endings without causing a performance impact for LF only files.
*/
int contains_crlf(Blob *p){
  int i;
  int j = 0;
  const int maxL = 10;             /* Max lines to check */
  const char *z = blob_buffer(p);
  int n = blob_size(p)+1;
  for(i=1; i<n; ){
    if( z[i-1]=='\r' && z[i]=='\n' ) return 1;
    while( i<n && z[i]!='\n' ){ i++; }
    j++;
    if( j>maxL ) return 0;
  }
  return 0;
}

/*
** Ensure that the text in pBlob ends with a new line.
** If useCrLf is true adds "\r\n" otherwise '\n'.
*/
void ensure_line_end(Blob *pBlob, int useCrLf){
  if( pBlob->nUsed<=0 ) return;
  if( pBlob->aData[pBlob->nUsed-1]!='\n' ){
    if( useCrLf ) blob_append_char(pBlob, '\r');
    blob_append_char(pBlob, '\n');
  }
}

/*
** Write out one of the four merge-marks.
*/
void append_merge_mark(Blob *pOut, int iMark, int ln, int useCrLf){
  ensure_line_end(pOut, useCrLf);
  blob_append(pOut, mergeMarker[iMark], -1);
  if( ln>0 ) blob_appendf(pOut, " (line %d)", ln);
  ensure_line_end(pOut, useCrLf);
}

/*
** Do a three-way merge.  Initialize pOut to contain the result.
**
** The merge is an edit against pV2.  Both pV1 and pV2 have a
** common origin at pPivot.  Apply the changes of pPivot ==> pV1
** to pV2.
**
** The return is 0 upon complete success. If any input file is binary,
** -1 is returned and pOut is unmodified.  If there are merge
** conflicts, the merge proceeds as best as it can and the number 
** conflicts, the merge proceeds as best as it can and the number
** of conflicts is returns
*/
int blob_merge(Blob *pPivot, Blob *pV1, Blob *pV2, Blob *pOut){
static int blob_merge(Blob *pPivot, Blob *pV1, Blob *pV2, Blob *pOut){
  int *aC1;              /* Changes from pPivot to pV1 */
  int *aC2;              /* Changes from pPivot to pV2 */
  int i1, i2;            /* Index into aC1[] and aC2[] */
  int nCpy, nDel, nIns;  /* Number of lines to copy, delete, or insert */
  int limit1, limit2;    /* Sizes of aC1[] and aC2[] */
  int nConflict = 0;     /* Number of merge conflicts seen so far */
  static const char zBegin[] = ">>>>>>> BEGIN MERGE CONFLICT\n";
  static const char zMid[]   = "============================\n";
  static const char zEnd[]   = "<<<<<<< END MERGE CONFLICT\n";
  int useCrLf = 0;
  int ln1, ln2, lnPivot; /* Line numbers for all files */
  DiffConfig DCfg;

  blob_zero(pOut);         /* Merge results stored in pOut */

  /* If both pV1 and pV2 start with a UTF-8 byte-order-mark (BOM),
  ** keep it in the output. This should be secure enough not to cause
  ** unintended changes to the merged file and consistent with what
  ** users are using in their source files.
  */
  if( starts_with_utf8_bom(pV1, 0) && starts_with_utf8_bom(pV2, 0) ){
    blob_append(pOut, (char*)get_utf8_bom(0), -1);
  }

  /* Check once to see if both pV1 and pV2 contains CR/LF endings.
  ** If true, CR/LF pair will be used later to append the
  ** boundary markers for merge conflicts.
  */
  if( contains_crlf(pV1) && contains_crlf(pV2) ){
    useCrLf = 1;
  }

  /* Compute the edits that occur from pPivot => pV1 (into aC1)
  ** and pPivot => pV2 (into aC2).  Each of the aC1 and aC2 arrays is
  ** an array of integer triples.  Within each triple, the first integer
  ** is the number of lines of text to copy directly from the pivot,
  ** the second integer is the number of lines of text to omit from the
  ** pivot, and the third integer is the number of lines of text that are
  ** inserted.  The edit array ends with a triple of 0,0,0.
  */
  diff_config_init(&DCfg, 0);
  aC1 = text_diff(pPivot, pV1, 0, 0);
  aC2 = text_diff(pPivot, pV2, 0, 0);
  aC1 = text_diff(pPivot, pV1, 0, &DCfg);
  aC2 = text_diff(pPivot, pV2, 0, &DCfg);
  if( aC1==0 || aC2==0 ){
    free(aC1);
    free(aC2);
    return -1;
  }

  blob_rewind(pV1);        /* Rewind inputs:  Needed to reconstruct output */
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  limit2 = i2;

  DEBUG(
    for(i1=0; i1<limit1; i1+=3){
      printf("c1: %4d %4d %4d\n", aC1[i1], aC1[i1+1], aC1[i1+2]);
    }
    for(i2=0; i2<limit2; i2+=3){
     printf("c2: %4d %4d %4d\n", aC2[i2], aC2[i2+1], aC2[i2+2]);
      printf("c2: %4d %4d %4d\n", aC2[i2], aC2[i2+1], aC2[i2+2]);
    }
  )

  /* Loop over the two edit vectors and use them to compute merged text
  ** which is written into pOut.  i1 and i2 are multiples of 3 which are
  ** indices into aC1[] and aC2[] to the edit triple currently being
  ** processed
  */
  i1 = i2 = 0;
  ln1 = ln2 = lnPivot = 1;
  while( i1<limit1 && i2<limit2 ){
    DEBUG( printf("%d: %2d %2d %2d   %d: %2d %2d %2d\n",
           i1/3, aC1[i1], aC1[i1+1], aC1[i1+2],
           i2/3, aC2[i2], aC2[i2+1], aC2[i2+2]); )

    if( aC1[i1]>0 && aC2[i2]>0 ){
      /* Output text that is unchanged in both V1 and V2 */
      nCpy = min(aC1[i1], aC2[i2]);
      DEBUG( printf("COPY %d\n", nCpy); )
      blob_copy_lines(pOut, pPivot, nCpy);
      blob_copy_lines(0, pV1, nCpy);
      blob_copy_lines(0, pV2, nCpy);
      blob_copy_lines(pOut, pPivot, nCpy); lnPivot += nCpy;
      blob_copy_lines(0, pV1, nCpy);       ln1 += nCpy;
      blob_copy_lines(0, pV2, nCpy);       ln2 += nCpy;
      aC1[i1] -= nCpy;
      aC2[i2] -= nCpy;
    }else
    if( aC1[i1] >= aC2[i2+1] && aC1[i1]>0 && aC2[i2+1]+aC2[i2+2]>0 ){
      /* Output edits to V2 that occurs within unchanged regions of V1 */
      nDel = aC2[i2+1];
      nIns = aC2[i2+2];
      DEBUG( printf("EDIT -%d+%d left\n", nDel, nIns); )
      blob_copy_lines(0, pPivot, nDel);
      blob_copy_lines(0, pV1, nDel);
      blob_copy_lines(pOut, pV2, nIns);
      blob_copy_lines(0, pPivot, nDel);    lnPivot += nDel;
      blob_copy_lines(0, pV1, nDel);       ln1 += nDel;
      blob_copy_lines(pOut, pV2, nIns);    ln2 += nIns;
      aC1[i1] -= nDel;
      i2 += 3;
    }else
    if( aC2[i2] >= aC1[i1+1] && aC2[i2]>0 && aC1[i1+1]+aC1[i1+2]>0 ){
      /* Output edits to V1 that occur within unchanged regions of V2 */
      nDel = aC1[i1+1];
      nIns = aC1[i1+2];
      DEBUG( printf("EDIT -%d+%d right\n", nDel, nIns); )
      blob_copy_lines(0, pPivot, nDel);
      blob_copy_lines(0, pV2, nDel);
      blob_copy_lines(pOut, pV1, nIns);
      blob_copy_lines(0, pPivot, nDel);    lnPivot += nDel;
      blob_copy_lines(0, pV2, nDel);       ln2 += nDel;
      blob_copy_lines(pOut, pV1, nIns);    ln1 += nIns;
      aC2[i2] -= nDel;
      i1 += 3;
    }else
    if( sameEdit(&aC1[i1], &aC2[i2], pV1, pV2) ){
      /* Output edits that are identical in both V1 and V2. */
      assert( aC1[i1]==0 );
      nDel = aC1[i1+1];
      nIns = aC1[i1+2];
      DEBUG( printf("EDIT -%d+%d both\n", nDel, nIns); )
      blob_copy_lines(0, pPivot, nDel);
      blob_copy_lines(pOut, pV1, nIns);
      blob_copy_lines(0, pV2, nIns);
      blob_copy_lines(0, pPivot, nDel);    lnPivot += nDel;
      blob_copy_lines(pOut, pV1, nIns);    ln1 += nIns;
      blob_copy_lines(0, pV2, nIns);       ln2 += nIns;
      i1 += 3;
      i2 += 3;
    }else
    {
      /* We have found a region where different edits to V1 and V2 overlap.
      ** This is a merge conflict.  Find the size of the conflict, then
      ** output both possible edits separate by distinctive marks.
      ** output both possible edits separated by distinctive marks.
      */
      int sz = 1;    /* Size of the conflict in lines */
      nConflict++;
      while( !ends_at_CPY(&aC1[i1], sz) || !ends_at_CPY(&aC2[i2], sz) ){
        sz++;
      }
      DEBUG( printf("CONFLICT %d\n", sz); )
      blob_appendf(pOut, zBegin);
      i1 = output_one_side(pOut, pV1, aC1, i1, sz);
      blob_appendf(pOut, zMid);
      i2 = output_one_side(pOut, pV2, aC2, i2, sz);
      blob_appendf(pOut, zEnd);

      append_merge_mark(pOut, 0, ln1, useCrLf);
      i1 = output_one_side(pOut, pV1, aC1, i1, sz, &ln1);

      append_merge_mark(pOut, 1, lnPivot, useCrLf);
      blob_copy_lines(pOut, pPivot, sz);   lnPivot += sz;

      append_merge_mark(pOut, 2, ln2, useCrLf);
      i2 = output_one_side(pOut, pV2, aC2, i2, sz, &ln2);

      blob_copy_lines(0, pPivot, sz);
    }
      append_merge_mark(pOut, 3, -1, useCrLf);
   }

    /* If we are finished with an edit triple, advance to the next
    ** triple.
    */
    if( i1<limit1 && aC1[i1]==0 && aC1[i1+1]==0 && aC1[i1+2]==0 ) i1+=3;
    if( i2<limit2 && aC2[i2]==0 && aC2[i2+1]==0 && aC2[i2+2]==0 ) i2+=3;
  }
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  free(aC1);
  free(aC2);
  return nConflict;
}

/*
** Return true if the input string contains a merge marker on a line by
** itself.
*/
int contains_merge_marker(Blob *p){
  int i, j;
  int len = (int)strlen(mergeMarker[0]);
  const char *z = blob_buffer(p);
  int n = blob_size(p) - len + 1;
  assert( len==(int)strlen(mergeMarker[1]) );
  assert( len==(int)strlen(mergeMarker[2]) );
  assert( len==(int)strlen(mergeMarker[3]) );
  assert( count(mergeMarker)==4 );
  for(i=0; i<n; ){
    for(j=0; j<4; j++){
      if( (memcmp(&z[i], mergeMarker[j], len)==0) ){
        return 1;
      }
    }
    while( i<n && z[i]!='\n' ){ i++; }
    while( i<n && (z[i]=='\n' || z[i]=='\r') ){ i++; }
  }
  return 0;
}

/*
** Return true if the named file contains an unresolved merge marker line.
*/
int file_contains_merge_marker(const char *zFullpath){
  Blob file;
  int rc;
  blob_read_from_file(&file, zFullpath, ExtFILE);
  rc = contains_merge_marker(&file);
  blob_reset(&file);
  return rc;
}

/*
** COMMAND:  test-3-way-merge
** COMMAND: 3-way-merge*
**
** Usage: %fossil 3-way-merge BASELINE V1 V2 MERGED
**
** Inputs are files BASELINE, V1, and V2.  The file MERGED is generated
** as output.
**
** BASELINE is a common ancestor of two files V1 and V2 that have diverging
** edits.  The generated output file MERGED is the combination of all
** Combine change in going from PIVOT->VERSION1 with the change going
** from PIVOT->VERSION2 and write the combined changes into MERGED.
** changes in both V1 and V2.
**
** This command has no effect on the Fossil repository.  It is a utility
** command made available for the convenience of users.  This command can
** be used, for example, to help import changes from an upstream project.
**
** Suppose an upstream project has a file named "Xup.c" which is imported
** with modifications to the local project as "Xlocal.c".  Suppose further
** that the "Xbase.c" is an exact copy of the last imported "Xup.c".
** Then to import the latest "Xup.c" while preserving all the local changes:
**
**      fossil 3-way-merge Xbase.c Xlocal.c Xup.c Xlocal.c
**      cp Xup.c Xbase.c
**      # Verify that everything still works
**      fossil commit
**
*/
void delta_3waymerge_cmd(void){
  Blob pivot, v1, v2, merged;
  int nConflict;

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=6 ){
    fprintf(stderr,"Usage: %s %s PIVOT V1 V2 MERGED\n", g.argv[0], g.argv[1]);
    usage("PIVOT V1 V2 MERGED");
    exit(1);
  }
  if( blob_read_from_file(&pivot, g.argv[2])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[2]);
  if( blob_read_from_file(&pivot, g.argv[2], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[2]);
    exit(1);
  }
  if( blob_read_from_file(&v1, g.argv[3])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[3]);
  if( blob_read_from_file(&v1, g.argv[3], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[3]);
    exit(1);
  }
  if( blob_read_from_file(&v2, g.argv[4])<0 ){
    fprintf(stderr,"cannot read %s\n", g.argv[4]);
  if( blob_read_from_file(&v2, g.argv[4], ExtFILE)<0 ){
    fossil_fatal("cannot read %s", g.argv[4]);
    exit(1);
  }
  blob_merge(&pivot, &v1, &v2, &merged);
  if( blob_write_to_file(&merged, g.argv[5])<blob_size(&merged) ){
    fprintf(stderr,"cannot write %s\n", g.argv[4]);
  nConflict = blob_merge(&pivot, &v1, &v2, &merged);
  if( blob_write_to_file(&merged, g.argv[5])<(int)blob_size(&merged) ){
    fossil_fatal("cannot write %s", g.argv[4]);
    exit(1);
  }
  blob_reset(&pivot);
  blob_reset(&v1);
  blob_reset(&v2);
  blob_reset(&merged);
  if( nConflict>0 ) fossil_warning("WARNING: %d merge conflicts", nConflict);
}

/*
** aSubst is an array of string pairs.  The first element of each pair is
** a string that begins with %.  The second element is a replacement for that
** string.
**
** This routine makes a copy of zInput into memory obtained from malloc and
** performance all applicable substitutions on that string.
*/
char *string_subst(const char *zInput, int nSubst, const char **azSubst){
  Blob x;
  int i, j;
  blob_zero(&x);
  while( zInput[0] ){
    for(i=0; zInput[i] && zInput[i]!='%'; i++){}
    if( i>0 ){
      blob_append(&x, zInput, i);
      zInput += i;
    }
    if( zInput[0]==0 ) break;
    for(j=0; j<nSubst; j+=2){
      int n = strlen(azSubst[j]);
      if( strncmp(zInput, azSubst[j], n)==0 ){
        blob_append(&x, azSubst[j+1], -1);
        zInput += n;
        break;
      }
    }
    if( j>=nSubst ){
      blob_append(&x, "%", 1);
      zInput++;
    }
  }
  return blob_str(&x);
}

#if INTERFACE
/*
** Flags to the 3-way merger
*/
#define MERGE_DRYRUN  0x0001
/*
** The MERGE_KEEP_FILES flag specifies that merge_3way() should retain
** its temporary files on error. By default they are removed after the
** merge, regardless of success or failure.
*/
#define MERGE_KEEP_FILES 0x0002
#endif


/*
** This routine is a wrapper around blob_merge() with the following
** enhancements:
**
**    (1) If the merge-command is defined, then use the external merging
**        program specified instead of the built-in blob-merge to do the
**        merging.  Panic if the external merger fails.
**        ** Not currently implemented **
**
**    (2) If gmerge-command is defined and there are merge conflicts in
**        blob_merge() then invoke the external graphical merger to resolve
**        the conflicts.
**
**    (3) If a merge conflict occurs and gmerge-command is not defined,
**        then write the pivot, original, and merge-in files to the
**        filesystem.
*/
int merge_3way(
  Blob *pPivot,       /* Common ancestor (older) */
  const char *zV1,    /* Name of file for version merging into (mine) */
  Blob *pV2,          /* Version merging from (yours) */
  Blob *pOut,         /* Output written here */
  unsigned mergeFlags /* Flags that control operation */
){
  Blob v1;            /* Content of zV1 */
  int rc;             /* Return code of subroutines and this routine */
  const char *zGMerge;   /* Name of the gmerge command */

  blob_read_from_file(&v1, zV1, ExtFILE);
  rc = blob_merge(pPivot, &v1, pV2, pOut);
  zGMerge = rc<=0 ? 0 : db_get("gmerge-command", 0);
  if( (mergeFlags & MERGE_DRYRUN)==0
      && ((zGMerge!=0 && zGMerge[0]!=0)
          || (rc!=0 && (mergeFlags & MERGE_KEEP_FILES)!=0)) ){
    char *zPivot;       /* Name of the pivot file */
    char *zOrig;        /* Name of the original content file */
    char *zOther;       /* Name of the merge file */

    zPivot = file_newname(zV1, "baseline", 1);
    blob_write_to_file(pPivot, zPivot);
    zOrig = file_newname(zV1, "original", 1);
    blob_write_to_file(&v1, zOrig);
    zOther = file_newname(zV1, "merge", 1);
    blob_write_to_file(pV2, zOther);
    if( rc>0 ){
      if( zGMerge && zGMerge[0] ){
        char *zOut;     /* Temporary output file */
        char *zCmd;     /* Command to invoke */
        const char *azSubst[8];  /* Strings to be substituted */
        zOut = file_newname(zV1, "output", 1);
        azSubst[0] = "%baseline";  azSubst[1] = zPivot;
        azSubst[2] = "%original";  azSubst[3] = zOrig;
        azSubst[4] = "%merge";     azSubst[5] = zOther;
        azSubst[6] = "%output";    azSubst[7] = zOut;
        zCmd = string_subst(zGMerge, 8, azSubst);
        printf("%s\n", zCmd); fflush(stdout);
        fossil_system(zCmd);
        if( file_size(zOut, RepoFILE)>=0 ){
          blob_read_from_file(pOut, zOut, ExtFILE);
          file_delete(zOut);
        }
        fossil_free(zCmd);
        fossil_free(zOut);
      }
    }
    if( (mergeFlags & MERGE_KEEP_FILES)==0 ){
      file_delete(zPivot);
      file_delete(zOrig);
      file_delete(zOther);
    }
    fossil_free(zPivot);
    fossil_free(zOrig);
    fossil_free(zOther);
  }
  blob_reset(&v1);
  return rc;
}
Deleted src/mkindex.c.
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/*
** Copyright (c) 2002 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Build a static hash table that maps URLs into functions to generate
** web pages.
**
** The source code is scanned for comment lines of the form:
**
**       WEBPAGE:  /abc/xyz
**
** This comment should be followed by a function definition of the
** form:
**
**       void function_name(void){
**
** This routine creates C source code for a constant table that maps
** webpage name into pointers to the function.
**
** We also scan for comments lines of this form:
**
**       COMMAND:  cmdname
**
** These entries build a constant table used to map command names into
** functions.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <assert.h>
#include <string.h>

/*
** Each entry looks like this:
*/
typedef struct Entry {
  int eType;
  char *zFunc;
  char *zPath;
  char *zHelp;
} Entry;

/*
** Maximum number of entries
*/
#define N_ENTRY 500

/*
** Maximum size of a help message
*/
#define MX_HELP 10000

/*
** Table of entries
*/
Entry aEntry[N_ENTRY];

/*
** Current help message accumulator
*/
char zHelp[MX_HELP];
int nHelp;

/*
** How many entries are used
*/
int nUsed;
int nFixed;

/*
** Current filename and line number
*/
char *zFile;
int nLine;

/*
** Duplicate N characters of a string.
*/
char *string_dup(const char *zSrc, int n){
  char *z;
  if( n<0 ) n = strlen(zSrc);
  z = malloc( n+1 );
  if( z==0 ){ fprintf(stderr,"Out of memory!\n"); exit(1); }
  strncpy(z, zSrc, n);
  z[n] = 0;
  return z;
}

/*
** Scan a line looking for comments containing zLabel.  Make
** new entries if found.
*/
void scan_for_label(const char *zLabel, char *zLine, int eType){
  int i, j;
  int len = strlen(zLabel);
  if( nUsed>=N_ENTRY ) return;
  for(i=0; isspace(zLine[i]) || zLine[i]=='*'; i++){}
  if( zLine[i]!=zLabel[0] ) return;
  if( strncmp(&zLine[i],zLabel, len)==0 ){
    i += len;
  }else{
    return;
  }
  while( isspace(zLine[i]) ){ i++; }
  if( zLine[i]=='/' ) i++;
  for(j=0; zLine[i+j] && !isspace(zLine[i+j]); j++){}
  aEntry[nUsed].eType = eType;
  aEntry[nUsed].zPath = string_dup(&zLine[i], j);
  aEntry[nUsed].zFunc = 0;
  nUsed++;
}

/*
** Scan a line for a function that implements a web page or command.
*/
void scan_for_func(char *zLine){
  int i,j,k;
  char *z;
  if( nUsed<=nFixed ) return;
  if( strncmp(zLine, "**", 2)==0 && isspace(zLine[2])
       && strlen(zLine)<sizeof(zHelp)-nHelp-1 && nUsed>nFixed ){
    if( zLine[2]=='\n' ){
      zHelp[nHelp++] = '\n';
    }else{
      if( strncmp(&zLine[3], "Usage: ", 6)==0 ) nHelp = 0;
      strcpy(&zHelp[nHelp], &zLine[3]);
      nHelp += strlen(&zHelp[nHelp]);
    }
    return;
  }
  for(i=0; isspace(zLine[i]); i++){}
  if( zLine[i]==0 ) return;
  if( strncmp(&zLine[i],"void",4)!=0 ){
    if( zLine[i]!='*' ) goto page_skip;
    return;
  }
  i += 4;
  if( !isspace(zLine[i]) ) goto page_skip;
  while( isspace(zLine[i]) ){ i++; }
  for(j=0; isalnum(zLine[i+j]) || zLine[i+j]=='_'; j++){}
  if( j==0 ) goto page_skip;
  for(k=nHelp-1; k>=0 && isspace(zHelp[k]); k--){}
  nHelp = k+1;
  zHelp[nHelp] = 0;
  for(k=0; k<nHelp && isspace(zHelp[k]); k++){}
  if( k<nHelp ){
    z = string_dup(&zHelp[k], nHelp-k);
  }else{
    z = 0;
  }
  for(k=nFixed; k<nUsed; k++){
    aEntry[k].zFunc = string_dup(&zLine[i], j);
    aEntry[k].zHelp = z;
  }
  i+=j;
  while( isspace(zLine[i]) ){ i++; }
  if( zLine[i]!='(' ) goto page_skip;
  nFixed = nUsed;
  nHelp = 0;
  return;

page_skip:   
   for(i=nFixed; i<nUsed; i++){
      fprintf(stderr,"%s:%d: skipping page \"%s\"\n",
         zFile, nLine, aEntry[i].zPath);
   }
   nUsed = nFixed;
}

/*
** Compare two entries
*/
int e_compare(const void *a, const void *b){
  const Entry *pA = (const Entry*)a;
  const Entry *pB = (const Entry*)b;
  int x = pA->eType - pB->eType;
  if( x==0 ){
    x = strcmp(pA->zPath, pB->zPath);
  }
  return x;
}

/*
** Build the binary search table.
*/
void build_table(void){
  int i;
  int nType0;

  qsort(aEntry, nFixed, sizeof(aEntry[0]), e_compare);
  for(i=0; i<nFixed; i++){
    printf("extern void %s(void);\n", aEntry[i].zFunc);
  }
  printf(
    "typedef struct NameMap NameMap;\n"
    "struct NameMap {\n"
    "  const char *zName;\n"
    "  void (*xFunc)(void);\n"
    "};\n"
    "static const NameMap aWebpage[] = {\n"
  );
  for(i=0; i<nFixed && aEntry[i].eType==0; i++){
    printf("  { \"%s\",%*s %s },\n",
      aEntry[i].zPath, (int)(25-strlen(aEntry[i].zPath)), "",
      aEntry[i].zFunc
    );
  }
  printf("};\n");
  nType0 = i;
  printf(
    "static const NameMap aCommand[] = {\n"
  );
  for(i=nType0; i<nFixed && aEntry[i].eType==1; i++){
    printf("  { \"%s\",%*s %s },\n",
      aEntry[i].zPath, (int)(25-strlen(aEntry[i].zPath)), "",
      aEntry[i].zFunc
    );
  }
  printf("};\n");
  for(i=nType0; i<nFixed; i++){
    char *z = aEntry[i].zHelp;
    if( z && z[0] ){
      printf("static const char zHelp_%s[] = \n", aEntry[i].zFunc);
      printf("  \"");
      while( *z ){
        if( *z=='\n' ){
          printf("\\n\"\n  \"");
        }else if( *z=='"' ){
          printf("\\\"");
        }else{
          putchar(*z);
        }
        z++;
      }
      printf("\";\n");
      aEntry[i].zHelp[0] = 0;
    }
  }
  printf(
    "static const char * const aCmdHelp[] = {\n"
  );
  for(i=nType0; i<nFixed; i++){
    if( aEntry[i].zHelp==0 ){
      printf("  0,\n");
    }else{
      printf("  zHelp_%s,\n", aEntry[i].zFunc);
    }
  }
  printf("};\n");
}

/*
** Process a single file of input
*/
void process_file(void){
  FILE *in = fopen(zFile, "r");
  char zLine[2000];
  if( in==0 ){
    fprintf(stderr,"%s: cannot open\n", zFile);
    return;
  }
  nLine = 0;
  while( fgets(zLine, sizeof(zLine), in) ){
    nLine++;
    scan_for_label("WEBPAGE:",zLine,0);
    scan_for_label("COMMAND:",zLine,1);
    scan_for_func(zLine);
  }
  fclose(in);
  nUsed = nFixed; 
}

int main(int argc, char **argv){
  int i;
  for(i=1; i<argc; i++){
    zFile = argv[i];
    process_file();
  }
  build_table();
  return 0;
}
Added src/moderate.c.





































































































































































































































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/*
** Copyright (c) 2012 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to deal with moderator actions for
** Wiki and Tickets.
*/
#include "config.h"
#include "moderate.h"
#include <assert.h>

/*
** Create a table to represent pending moderation requests, if the
** table does not already exist.
*/
void moderation_table_create(void){
  db_multi_exec(
     "CREATE TABLE IF NOT EXISTS repository.modreq(\n"
     "  objid INTEGER PRIMARY KEY,\n"        /* Record pending approval */
     "  attachRid INT,\n"                    /* Object attached */
     "  tktid TEXT\n"                        /* Associated ticket id */
     ");\n"
  );
}

/*
** Return TRUE if the modreq table exists
*/
int moderation_table_exists(void){
  return db_table_exists("repository", "modreq");
}

/*
** Return TRUE if the object specified is being held for moderation.
*/
int moderation_pending(int rid){
  static Stmt q;
  int rc;
  if( rid==0 || !moderation_table_exists() ) return 0;
  db_static_prepare(&q, "SELECT 1 FROM modreq WHERE objid=:objid");
  db_bind_int(&q, ":objid", rid);
  rc = db_step(&q)==SQLITE_ROW;
  db_reset(&q);
  return rc;
}

/*
** If the rid object is being held for moderation, write out
** an "awaiting moderation" message and return true.
**
** If the object is not being held for moderation, simply return
** false without generating any output.
*/
int moderation_pending_www(int rid){
  int pending = moderation_pending(rid);
  if( pending ){
    @ <span class="modpending">(Awaiting Moderator Approval)</span>
  }
  return pending;
}


/*
** Return TRUE if there any pending moderation requests.
*/
int moderation_needed(void){
  if( !moderation_table_exists() ) return 0;
  return db_exists("SELECT 1 FROM modreq");
}

/*
** Check to see if the object identified by RID is used for anything.
*/
static int object_used(int rid){
  static const char *const aTabField[] = {
     "modreq",     "attachRid",
     "mlink",      "mid",
     "mlink",      "fid",
     "tagxref",    "srcid",
     "tagxref",    "rid",
  };
  int i;
  for(i=0; i<count(aTabField); i+=2){
    if( db_exists("SELECT 1 FROM \"%w\" WHERE \"%w\"=%d",
                  aTabField[i], aTabField[i+1], rid) ) return 1;
  }
  return 0;
}

/*
** Delete a moderation item given by objid
*/
void moderation_disapprove(int objid){
  Stmt q;
  char *zTktid;
  int attachRid = 0;
  int rid;
  if( !moderation_pending(objid) ) return;
  db_begin_transaction();
  rid = objid;
  while( rid && content_is_private(rid) ){
    db_prepare(&q, "SELECT rid FROM delta WHERE srcid=%d", rid);
    while( db_step(&q)==SQLITE_ROW ){
      int ridUser = db_column_int(&q, 0);
      content_undelta(ridUser);
    }
    db_finalize(&q);
    db_multi_exec(
      "DELETE FROM blob WHERE rid=%d;"
      "DELETE FROM delta WHERE rid=%d;"
      "DELETE FROM event WHERE objid=%d;"
      "DELETE FROM tagxref WHERE rid=%d;"
      "DELETE FROM private WHERE rid=%d;"
      "DELETE FROM attachment WHERE attachid=%d;",
      rid, rid, rid, rid, rid, rid
    );
    if( db_table_exists("repository","forumpost") ){
      db_multi_exec("DELETE FROM forumpost WHERE fpid=%d", rid);
    }
    zTktid = db_text(0, "SELECT tktid FROM modreq WHERE objid=%d", rid);
    if( zTktid && zTktid[0] ){
      ticket_rebuild_entry(zTktid);
      fossil_free(zTktid);
    }
    attachRid = db_int(0, "SELECT attachRid FROM modreq WHERE objid=%d", rid);
    if( rid==objid ){
      db_multi_exec("DELETE FROM modreq WHERE objid=%d", rid);
    }
    if( attachRid && object_used(attachRid) ) attachRid = 0;
    admin_log("Disapproved moderation of rid %d.", rid);
    rid = attachRid;
  }
  db_end_transaction(0);
}

/*
** Approve an object held for moderation.
*/
void moderation_approve(char class, int rid){
  if( !moderation_pending(rid) ) return;
  db_begin_transaction();
  db_multi_exec(
    "DELETE FROM private WHERE rid=%d;"
    "INSERT OR IGNORE INTO unclustered VALUES(%d);"
    "INSERT OR IGNORE INTO unsent VALUES(%d);",
    rid, rid, rid
  );
  db_multi_exec("DELETE FROM modreq WHERE objid=%d", rid);
  admin_log("Approved moderation of rid %c-%d.", class, rid);
  if( class!='a' ) search_doc_touch(class, rid, 0);
  setup_incr_cfgcnt();
  db_end_transaction(0);
}

/*
** WEBPAGE: modreq
**
** Show all pending moderation request
*/
void modreq_page(void){
  Blob sql;
  Stmt q;

  login_check_credentials();
  if( !g.perm.ModWiki && !g.perm.ModTkt && !g.perm.ModForum ){
    login_needed(g.anon.ModWiki && g.anon.ModTkt && g.anon.ModForum);
    return;
  }
  style_header("Pending Moderation Requests");
  @ <h2>All Pending Moderation Requests</h2>
  if( moderation_table_exists() ){
    blob_init(&sql, timeline_query_for_www(), -1);
    blob_append_sql(&sql,
        " AND event.objid IN (SELECT objid FROM modreq)"
        " ORDER BY event.mtime DESC"
    );
    db_prepare(&q, "%s", blob_sql_text(&sql));
    www_print_timeline(&q, 0, 0, 0, 0, 0, 0, 0);
    db_finalize(&q);
  }
  style_finish_page();
}

/*
** Disapproves any entries in the modreq table which belong to any
** user whose name is no longer found in the user table. This is only
** intended to be called after user deletion via /setup_uedit.
**
** To figure out whether a name exists it cross-references
** coalesce(event.euser, event.user) with user.login, limiting the
** selection to event entries where objid matches an entry in the
** modreq table.
**
** This is a no-op if called without g.perm.Admin permissions or if
** moderation_table_exists() returns false.
*/
void moderation_disapprove_for_missing_users(){
  Stmt q;
  if( !g.perm.Admin || !moderation_table_exists() ){
    return;
  }
  db_begin_transaction();
  db_prepare(&q,
    "SELECT objid FROM event WHERE objid IN "
    "(SELECT objid FROM modreq) "
    "AND coalesce(euser,user) NOT IN "
    "(SELECT login FROM user)"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int const objid = db_column_int(&q, 0);
    moderation_disapprove(objid);
  }
  db_finalize(&q);
  setup_incr_cfgcnt();
  db_end_transaction(0);
}
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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to convert user-supplied object names into
** This file contains code used to resolved user-supplied object names.
** canonical UUIDs.
**
** A user-supplied object name is any unique prefix of a valid UUID but
** not necessarily in canonical form.  
*/
#include "config.h"
#include "name.h"
#include <assert.h>

#if INTERFACE
/*
** An upper boundary on RIDs, provided in order to be able to
** distinguish real RID values from RID_CKOUT and any future
** RID_... values.
*/
#define RID_MAX        0x7ffffff0
/*
** A "magic" RID representing the current checkout in some contexts.
*/
#define RID_CKOUT      (RID_MAX+1)
#endif
** This routine takes a user-entered UUID which might be in mixed

** case and might only be a prefix of the full UUID and converts it
** into the full-length UUID in canonical form.
**
** If the input is not a UUID or a UUID prefix, then try to resolve
** the name as a tag.  If multiple tags match, pick the latest.
** If the input name matches "tag:*" then always resolve as a tag.
/*
** Return TRUE if the string begins with something that looks roughly
** like an ISO date/time string.  The SQLite date/time functions will
** have the final say-so about whether or not the date/time string is
** well-formed.
*/
int fossil_isdate(const char *z){
  if( !fossil_isdigit(z[0]) ) return 0;
  if( !fossil_isdigit(z[1]) ) return 0;
  if( !fossil_isdigit(z[2]) ) return 0;
  if( !fossil_isdigit(z[3]) ) return 0;
  if( z[4]!='-') return 0;
  if( !fossil_isdigit(z[5]) ) return 0;
  if( !fossil_isdigit(z[6]) ) return 0;
  if( z[7]!='-') return 0;
  if( !fossil_isdigit(z[8]) ) return 0;
  if( !fossil_isdigit(z[9]) ) return 0;
  return 1;
}

/*
** Check to see if the string might be a compact date/time that omits
** the punctuation.  Example:  "20190327084549" instead of
** "2019-03-27 08:45:49".  If the string is of the appropriate form,
** then return an alternative string (in static space) that is the same
** string with punctuation inserted.
**
** If the input is not a tag, then try to match it as an ISO-8601 date
** string YYYY-MM-DD HH:MM:SS and pick the nearest check-in to that date.
** If the input is of the form "date:*" or "localtime:*" or "utc:*" then
** always resolve the name as a date.
**
** Return 0 on success.  Return 1 if the name cannot be resolved.
** Return 2 name is ambiguous.
*/
int name_to_uuid(Blob *pName, int iErrPriority){
  int rc;
  int sz;
  sz = blob_size(pName);
  if( sz>UUID_SIZE || sz<4 || !validate16(blob_buffer(pName), sz) ){
    char *zUuid;
    const char *zName = blob_str(pName);
    if( memcmp(zName, "tag:", 4)==0 ){
      zName += 4;
      zUuid = tag_to_uuid(zName);
    }else{
      zUuid = tag_to_uuid(zName);
      if( zUuid==0 ){
        zUuid = date_to_uuid(zName);
      }
    }
    if( zUuid ){
      blob_reset(pName);
      blob_append(pName, zUuid, -1);
      free(zUuid);
      return 0;
    }
** If the bVerifyNotAHash flag is true, then a check is made to see if
** the string is a hash prefix and NULL is returned if it is.  If the
** bVerifyNotAHash flag is false, then the result is determined by syntax
** of the input string only, without reference to the artifact table.
*/
char *fossil_expand_datetime(const char *zIn, int bVerifyNotAHash){
  static char zEDate[20];
  static const char aPunct[] = { 0, 0, '-', '-', ' ', ':', ':' };
  int n = (int)strlen(zIn);
  int i, j;

  /* Only three forms allowed:
  **   (1)  YYYYMMDD
  **   (2)  YYYYMMDDHHMM
  **   (3)  YYYYMMDDHHMMSS
  */
  if( n!=8 && n!=12 && n!=14 ) return 0;

  /* Every character must be a digit */
  for(i=0; fossil_isdigit(zIn[i]); i++){}
  if( i!=n ) return 0;

  /* Expand the date */
  for(i=j=0; zIn[i]; i++){
    if( i>=4 && (i%2)==0 ){
      zEDate[j++] = aPunct[i/2];
    }
    zEDate[j++] = zIn[i];
  }
  zEDate[j] = 0;

  /* Check for reasonable date values.
  ** Offset references:
  **    YYYY-MM-DD HH:MM:SS
  **    0123456789 12345678
  */

  i = atoi(zEDate);
  if( i<1970 || i>2100 ) return 0;
  i = atoi(zEDate+5);
  if( i<1 || i>12 ) return 0;
  i = atoi(zEDate+8);
  if( i<1 || i>31 ) return 0;
  if( n>8 ){
    i = atoi(zEDate+11);
    if( i>24 ) return 0;
    i = atoi(zEDate+14);
    if( i>60 ) return 0;
    if( n==14 && atoi(zEDate+17)>60 ) return 0;
  }

  /* The string is not also a hash prefix */
  if( bVerifyNotAHash ){
    if( db_exists("SELECT 1 FROM blob WHERE uuid GLOB '%q*'",zIn) ) return 0;
  }

  /* It looks like this may be a date.  Return it with punctuation added. */
  return zEDate;
}

/*
** The data-time string in the argument is going to be used as an
** upper bound like this:    mtime<=julianday(zDate,'localtime').
** But if the zDate parameter omits the fractional seconds or the
** seconds, or the time, that might mess up the == part of the
** comparison.  So add in missing factional seconds or seconds or time.
**
** The returned string is held in a static buffer that is overwritten
** with each call, or else is just a copy of its input if there are
** no changes.
*/
const char *fossil_roundup_date(const char *zDate){
  static char zUp[24];
  int n = (int)strlen(zDate);
  if( n==19 ){  /* YYYY-MM-DD HH:MM:SS */
    memcpy(zUp, zDate, 19);
    memcpy(zUp+19, ".999", 5);
    return zUp;
  }
    fossil_error(iErrPriority, "not a valid object name: %s", zName);
    return 1;
  if( n==16 ){ /* YYYY-MM-DD HH:MM */
    memcpy(zUp, zDate, 16);
    memcpy(zUp+16, ":59.999", 8);
    return zUp;
  }
  blob_materialize(pName);
  canonical16(blob_buffer(pName), sz);
  if( sz==UUID_SIZE ){
  if( n==10 ){ /* YYYY-MM-DD */
    rc = db_int(1, "SELECT 0 FROM blob WHERE uuid=%B", pName);
    if( rc ){
    memcpy(zUp, zDate, 10);
    memcpy(zUp+10, " 23:59:59.999", 14);
    return zUp;
      fossil_error(iErrPriority, "no such artifact: %b", pName);
      blob_reset(pName);
    }
  }else if( sz<UUID_SIZE && sz>=4 ){
    Stmt q;
    db_prepare(&q, "SELECT uuid FROM blob WHERE uuid GLOB '%b*'", pName);
    if( db_step(&q)!=SQLITE_ROW ){
  }
  return zDate;
}


/*
** Return the RID that is the "root" of the branch that contains
** check-in "rid".  Details depending on eType:
**
**    eType==0    The check-in of the parent branch off of which
**                the branch containing RID originally diverged.
**
**    eType==1    The first check-in of the branch that contains RID.
**
**    eType==2    The youngest ancestor of RID that is on the branch
**                from which the branch containing RID diverged.
*/
int start_of_branch(int rid, int eType){
  Stmt q;
  int rc;
  int ans = rid;
  char *zBr = branch_of_rid(rid);
  db_prepare(&q,
    "WITH RECURSIVE"
    "  par(pid, ex, cnt) as ("
    "    SELECT pid, EXISTS(SELECT 1 FROM tagxref"
    "                        WHERE tagid=%d AND tagtype>0"
    "                          AND value=%Q AND rid=plink.pid), 1"
    "    FROM plink WHERE cid=%d AND isprim"
    "    UNION ALL "
    "    SELECT plink.pid, EXISTS(SELECT 1 FROM tagxref "
    "                              WHERE tagid=%d AND tagtype>0"
    "                                AND value=%Q AND rid=plink.pid),"
    "           1+par.cnt"
    "      FROM plink, par"
    "     WHERE cid=par.pid AND isprim AND par.ex "
    "     LIMIT 100000 "
    "  )"
    " SELECT pid FROM par WHERE ex>=%d ORDER BY cnt DESC LIMIT 1",
    TAG_BRANCH, zBr, ans, TAG_BRANCH, zBr, eType%2
  );
  fossil_free(zBr);
  rc = db_step(&q);
      char *zUuid;
      db_finalize(&q);
  if( rc==SQLITE_ROW ){
    ans = db_column_int(&q, 0);
  }
  db_finalize(&q);
      zUuid = tag_to_uuid(blob_str(pName));
      if( zUuid ){
        blob_reset(pName);
  if( eType==2 && ans>0 ){
    zBr = branch_of_rid(ans);
        blob_append(pName, zUuid, -1);
        free(zUuid);
    ans = compute_youngest_ancestor_in_branch(rid, zBr);
    fossil_free(zBr);
        return 0;
      }
  }
      fossil_error(iErrPriority, "no artifacts match the prefix \"%b\"", pName);
      return 1;
    }
    blob_reset(pName);
  return ans;
}

    blob_append(pName, db_column_text(&q, 0), db_column_bytes(&q, 0));
    if( db_step(&q)==SQLITE_ROW ){
      fossil_error(iErrPriority, 
         "multiple artifacts match"
      );
/*
** Find the RID of the most recent object with symbolic tag zTag
** and having a type that matches zType.
**
** Return 0 if there are no matches.
**
** This is a tricky query to do efficiently.
** If the tag is very common (ex: "trunk") then
** we want to use the query identified below as Q1 - which searches
** the most recent EVENT table entries for the most recent with the tag.
** But if the tag is relatively scarce (anything other than "trunk", basically)
** then we want to do the indexed search show below as Q2.
*/
static int most_recent_event_with_tag(const char *zTag, const char *zType){
  return db_int(0,
    "SELECT objid FROM ("
      /* Q1:  Begin by looking for the tag in the 30 most recent events */
      "SELECT objid"
       " FROM (SELECT * FROM event ORDER BY mtime DESC LIMIT 30) AS ex"
      " WHERE type GLOB '%q'"
        " AND EXISTS(SELECT 1 FROM tagxref, tag"
                     " WHERE tag.tagname='sym-%q'"
                       " AND tagxref.tagid=tag.tagid"
                       " AND tagxref.tagtype>0"
                       " AND tagxref.rid=ex.objid)"
      " ORDER BY mtime DESC LIMIT 1"
    ") UNION ALL SELECT * FROM ("
      /* Q2: If the tag is not found in the 30 most recent events, then using
      ** the tagxref table to index for the tag */
      "SELECT event.objid"
       " FROM tag, tagxref, event"
      " WHERE tag.tagname='sym-%q'"
        " AND tagxref.tagid=tag.tagid"
        " AND tagxref.tagtype>0"
        " AND event.objid=tagxref.rid"
        " AND event.type GLOB '%q'"
      " ORDER BY event.mtime DESC LIMIT 1"
    ") LIMIT 1;",
    zType, zTag, zTag, zType
  );
      blob_reset(pName);
      db_finalize(&q);
      return 2;
    }
}
    db_finalize(&q);
    rc = 0;
  }else{
    rc = 0;
  }
  return rc;

/*
** Find the RID for a check-in that is the most recent check-in with
** tag zTag that occurs on or prior to rDate.
**
** See also the performance note on most_recent_event_with_tag() which
** applies to this routine too.
*/
int last_checkin_with_tag_before_date(const char *zTag, double rLimit){
  Stmt s;
  int rid = 0;
}

  if( strncmp(zTag, "tag:", 4)==0 ) zTag += 4;
  db_prepare(&s,
    "SELECT objid FROM ("
      /* Q1:  Begin by looking for the tag in the 30 most recent events */
      "SELECT objid"
       " FROM (SELECT * FROM event WHERE mtime<=:datelimit"
             " ORDER BY mtime DESC LIMIT 30) AS ex"
      " WHERE type='ci'"
        " AND EXISTS(SELECT 1 FROM tagxref, tag"
                     " WHERE tag.tagname='sym-%q'"
                       " AND tagxref.tagid=tag.tagid"
                       " AND tagxref.tagtype>0"
                       " AND tagxref.rid=ex.objid)"
      " ORDER BY mtime DESC LIMIT 1"
    ") UNION ALL SELECT * FROM ("
      /* Q2: If the tag is not found in the 30 most recent events, then using
      ** the tagxref table to index for the tag */
      "SELECT event.objid"
       " FROM tag, tagxref, event"
      " WHERE tag.tagname='sym-%q'"
        " AND tagxref.tagid=tag.tagid"
        " AND tagxref.tagtype>0"
        " AND event.objid=tagxref.rid"
        " AND event.type='ci'"
        " AND event.mtime<=:datelimit"
      " ORDER BY event.mtime DESC LIMIT 1"
    ") LIMIT 1;",
    zTag, zTag
  );
  db_bind_double(&s, ":datelimit", rLimit);
  if( db_step(&s)==SQLITE_ROW ){
    rid = db_column_int(&s,0);
  }
  db_finalize(&s);
  return rid;
}

/*
** Return TRUE if the string begins with an ISO8601 date: YYYY-MM-DD.
** Find the RID of the first check-in (chronologically) after rStart that
** has tag zTag.
**
** See also the performance note on most_recent_event_with_tag() which
** applies to this routine too.
*/
static int is_date(const char *z){
  if( !isdigit(z[0]) ) return 0;
  if( !isdigit(z[1]) ) return 0;
int first_checkin_with_tag_after_date(const char *zTag, double rStart){
  Stmt s;
  int rid = 0;
  if( strncmp(zTag, "tag:", 4)==0 ) zTag += 4;
  if( !isdigit(z[2]) ) return 0;
  if( !isdigit(z[3]) ) return 0;
  if( z[4]!='-') return 0;
  db_prepare(&s,
  if( !isdigit(z[5]) ) return 0;
  if( !isdigit(z[6]) ) return 0;
  if( z[7]!='-') return 0;
    "SELECT objid FROM ("
      /* Q1:  Begin by looking for the tag in the 30 most recent events */
      "SELECT objid"
       " FROM (SELECT * FROM event WHERE mtime>=:startdate"
             " ORDER BY mtime LIMIT 30) AS ex"
      " WHERE type='ci'"
  if( !isdigit(z[8]) ) return 0;
  if( !isdigit(z[9]) ) return 0;
  return 1;
}

        " AND EXISTS(SELECT 1 FROM tagxref, tag"
                     " WHERE tag.tagname='sym-%q'"
                       " AND tagxref.tagid=tag.tagid"
                       " AND tagxref.tagtype>0"
                       " AND tagxref.rid=ex.objid)"
      " ORDER BY mtime LIMIT 1"
    ") UNION ALL SELECT * FROM ("
      /* Q2: If the tag is not found in the 30 most recent events, then using
      ** the tagxref table to index for the tag */
      "SELECT event.objid"
       " FROM tag, tagxref, event"
      " WHERE tag.tagname='sym-%q'"
        " AND tagxref.tagid=tag.tagid"
        " AND tagxref.tagtype>0"
        " AND event.objid=tagxref.rid"
        " AND event.type='ci'"
        " AND event.mtime>=:startdate"
      " ORDER BY event.mtime LIMIT 1"
    ") LIMIT 1;",
    zTag, zTag
  );
  db_bind_double(&s, ":startdate", rStart);
  if( db_step(&s)==SQLITE_ROW ){
    rid = db_column_int(&s,0);
  }
  db_finalize(&s);
  return rid;
}

/*
** Return true if character "c" is a character that might have been
** Convert a symbolic tag name into the UUID of a check-in that contains
** that tag.  If the tag appears on multiple check-ins, return the UUID
** of the most recent check-in with the tag.
** accidentally appended to the end of a URL.
*/
static int is_trailing_punct(char c){
  return c=='.' || c=='_' || c==')' || c=='>' || c=='!' || c=='?' || c==',';
}


/*
** Convert a symbolic name into a RID.  Acceptable forms:
**
**   *  artifact hash (optionally enclosed in [...])
**   *  4-character or larger prefix of an artifact
**   *  Symbolic Name
**   *  "tag:" + symbolic name
**   *  Date or date-time
**   *  "date:" + Date or date-time
**   *  symbolic-name ":" date-time
** If the input string is of the form:
**   *  "tip"
**
** The following additional forms are available in local checkouts:
**
**   *  "current"
**   *  "prev" or "previous"
**      tag:date
**   *  "next"
**
** Then return the UUID of the oldest check-in with that tag that is
** not older than 'date'.
** The following modifier prefixes may be applied to the above forms:
**
**   *  "root:BR" = The origin of the branch named BR.
**   *  "start:BR" = The first check-in of the branch named BR.
**   *  "merge-in:BR" = The most recent merge-in for the branch named BR.
**
** In those forms, BR may be any symbolic form but is assumed to be a
** An input of "tip" returns the most recent check-in.
** check-in. Thus root:2021-02-01 would resolve to a check-in, possibly
** in a branch and possibly in the trunk, but never a wiki edit or
** forum post.
**
** Memory to hold the returned string comes from malloc() and needs to
** be freed by the caller.
*/
** Return the RID of the matching artifact.  Or return 0 if the name does not
** match any known object.  Or return -1 if the name is ambiguous.
**
** The zType parameter specifies the type of artifact: ci, t, w, e, g, f.
** If zType is NULL or "" or "*" then any type of artifact will serve.
** If zType is "br" then find the first check-in of the named branch
** rather than the last.
**
char *tag_to_uuid(const char *zTag){
  char *zUuid = 
    db_text(0,
       "SELECT blob.uuid"
       "  FROM tag, tagxref, event, blob"
       " WHERE tag.tagname='sym-'||%Q "
** zType is "ci" in most use cases since we are usually searching for
** a check-in. A value of "ci+" works like "ci" but adds these
** semantics: if zTag is "ckout" and a checkout is open, "ci+" causes
** RID_CKOUT to be returned, in which case g.localOpen will hold the
** RID of the checkout. Conversely, passing in the hash, or another
** symbolic name of the local checkout version, will always result in
** its RID being returned.
**
** Note that the input zTag for types "t" and "e" is the artifact hash of
** the ticket-change or technote-change artifact, not the randomly generated
** hexadecimal identifier assigned to tickets and events.  Those identifiers
** live in a separate namespace.
*/
int symbolic_name_to_rid(const char *zTag, const char *zType){
  int rid = 0;
  int ridCkout = 0;
  int nTag;
  int i;
  int startOfBranch = 0;
  const char *zXTag;     /* zTag with optional [...] removed */
  int nXTag;             /* Size of zXTag */
  const char *zDate;     /* Expanded date-time string */
  int isCheckin = 0;     /* zType==ci = 1, zType==ci+ = 2 */

  if( zType==0 || zType[0]==0 ){
    zType = "*";
  }else if( zType[0]=='b' ){
    zType = "ci";
    startOfBranch = 1;
  }
  if( zTag==0 || zTag[0]==0 ) return 0;
  else if( 'c'==zType[0] ){
    if( fossil_strcmp(zType,"ci")==0 ){
      isCheckin = 1;
    }else if( fossil_strcmp(zType,"ci+")==0 ){
      isCheckin = 2;
      zType = "ci";
    }
  }

  /* special keyword: "tip" */
  if( fossil_strcmp(zTag, "tip")==0 && (zType[0]=='*' || isCheckin!=0) ){
    rid = db_int(0,
      "SELECT objid"
      "  FROM event"
      " WHERE type='ci'"
       "   AND tagxref.tagid=tag.tagid AND tagxref.tagtype>0 "
       "   AND event.objid=tagxref.rid "
       "   AND blob.rid=event.objid "
       " ORDER BY event.mtime DESC ",
      " ORDER BY event.mtime DESC"
       zTag
    );
  if( zUuid==0 ){
    int nTag = strlen(zTag);
    if( rid ) return rid;
  }

    int i;
    for(i=0; i<nTag-10; i++){
      if( zTag[i]==':' && is_date(&zTag[i+1]) ){
  if( g.localOpen ) {
        char *zDate = mprintf("%s", &zTag[i+1]);
        char *zTagBase = mprintf("%.*s", i, zTag);
        int nDate = strlen(zDate);
        int useUtc = 0;
        if( sqlite3_strnicmp(&zDate[nDate-3],"utc",3)==0 ){
          nDate -= 3;
          zDate[nDate] = 0;
          useUtc = 1;
        }
        zUuid = db_text(0,
          "SELECT blob.uuid"
    ridCkout = db_lget_int("checkout",0);
  }

  /* special keywords: "prev", "previous", "current", "ckout", and
  ** "next" */
  if( (zType[0]=='*' || isCheckin!=0) && 0<ridCkout ){
    if( fossil_strcmp(zTag, "current")==0 ){
      rid = ridCkout;
    }else if( fossil_strcmp(zTag, "prev")==0
              || fossil_strcmp(zTag, "previous")==0 ){
      rid = db_int(0, "SELECT pid FROM plink WHERE cid=%d AND isprim",
                   ridCkout);
    }else if( fossil_strcmp(zTag, "next")==0 ){
      rid = db_int(0, "SELECT cid FROM plink WHERE pid=%d"
                      "  ORDER BY isprim DESC, mtime DESC", ridCkout);
    }else if( isCheckin>1 && fossil_strcmp(zTag, "ckout")==0 ){
      rid = RID_CKOUT;
    }
    if( rid ) return rid;
  }

  /* Date and times */
  if( memcmp(zTag, "date:", 5)==0 ){
    zDate = fossil_expand_datetime(&zTag[5],0);
    if( zDate==0 ) zDate = &zTag[5];
    rid = db_int(0,
      "SELECT objid FROM event"
      " WHERE mtime<=julianday(%Q,fromLocal()) AND type GLOB '%q'"
      " ORDER BY mtime DESC LIMIT 1",
      fossil_roundup_date(zDate), zType);
    return rid;
  }
  if( fossil_isdate(zTag) ){
    rid = db_int(0,
      "SELECT objid FROM event"
          "  FROM tag, tagxref, event, blob"
          " WHERE tag.tagname='sym-'||%Q "
          "   AND tagxref.tagid=tag.tagid AND tagxref.tagtype>0 "
          "   AND event.objid=tagxref.rid "
          "   AND blob.rid=event.objid "
          "   AND event.mtime<=julianday(%Q %s)"
          " ORDER BY event.mtime DESC ",
      " WHERE mtime<=julianday(%Q,fromLocal()) AND type GLOB '%q'"
      " ORDER BY mtime DESC LIMIT 1",
      fossil_roundup_date(zTag), zType);
    if( rid) return rid;
  }

  /* Deprecated date & time formats:   "local:" + date-time and
  ** "utc:" + date-time */
  if( memcmp(zTag, "local:", 6)==0 ){
    rid = db_int(0,
      "SELECT objid FROM event"
      " WHERE mtime<=julianday(%Q) AND type GLOB '%q'"
      " ORDER BY mtime DESC LIMIT 1",
          zTagBase, zDate, (useUtc ? "" : ",'utc'")
        );
        break;
      }
    }
    if( zUuid==0 && strcmp(zTag, "tip")==0 ){
      zUuid = db_text(0,
        "SELECT blob.uuid"
        "  FROM event, blob"
        " WHERE event.type='ci'"
        "   AND blob.rid=event.objid"
        " ORDER BY event.mtime DESC"
      );
    }
  }
  return zUuid;
}

/*
      &zTag[6], zType);
    return rid;
  }
  if( memcmp(zTag, "utc:", 4)==0 ){
    rid = db_int(0,
      "SELECT objid FROM event"
      " WHERE mtime<=julianday('%qz') AND type GLOB '%q'"
      " ORDER BY mtime DESC LIMIT 1",
      fossil_roundup_date(&zTag[4]), zType);
    return rid;
  }

  /* "tag:" + symbolic-name */
  if( memcmp(zTag, "tag:", 4)==0 ){
    rid = most_recent_event_with_tag(&zTag[4], zType);
    if( startOfBranch ) rid = start_of_branch(rid,1);
    return rid;
  }

  /* root:BR -> The origin of the branch named BR */
  if( strncmp(zTag, "root:", 5)==0 ){
    rid = symbolic_name_to_rid(zTag+5, zType);
    return start_of_branch(rid, 0);
  }

  /* start:BR -> The first check-in on branch named BR */
  if( strncmp(zTag, "start:", 6)==0 ){
    rid = symbolic_name_to_rid(zTag+6, zType);
    return start_of_branch(rid, 1);
  }

  /* merge-in:BR -> Most recent merge-in for the branch named BR */
  if( strncmp(zTag, "merge-in:", 9)==0 ){
    rid = symbolic_name_to_rid(zTag+9, zType);
    return start_of_branch(rid, 2);
  }

  /* symbolic-name ":" date-time */
  nTag = strlen(zTag);
  for(i=0; i<nTag-8 && zTag[i]!=':'; i++){}
  if( zTag[i]==':'
   && (fossil_isdate(&zTag[i+1]) || fossil_expand_datetime(&zTag[i+1],0)!=0)
  ){
    char *zDate = mprintf("%s", &zTag[i+1]);
    char *zTagBase = mprintf("%.*s", i, zTag);
    char *zXDate;
    int nDate = strlen(zDate);
    if( sqlite3_strnicmp(&zDate[nDate-3],"utc",3)==0 ){
      zDate[nDate-3] = 'z';
      zDate[nDate-2] = 0;
    }
    zXDate = fossil_expand_datetime(zDate,0);
    if( zXDate==0 ) zXDate = zDate;
    rid = db_int(0,
      "SELECT event.objid, max(event.mtime)"
      "  FROM tag, tagxref, event"
      " WHERE tag.tagname='sym-%q' "
      "   AND tagxref.tagid=tag.tagid AND tagxref.tagtype>0 "
      "   AND event.objid=tagxref.rid "
      "   AND event.mtime<=julianday(%Q,fromLocal())"
      "   AND event.type GLOB '%q'",
      zTagBase, fossil_roundup_date(zXDate), zType
    );
    fossil_free(zDate);
    fossil_free(zTagBase);
    return rid;
  }

** Convert a date/time string into a UUID.
**
** Input forms accepted:
**
**    date:DATE
**    local:DATE
**    utc:DATE
**
** The DATE is interpreted as localtime unless the "utc:" prefix is used
  /* Remove optional [...] */
  zXTag = zTag;
  nXTag = nTag;
  if( zXTag[0]=='[' ){
    zXTag++;
    nXTag--;
  }
  if( nXTag>0 && zXTag[nXTag-1]==']' ){
    nXTag--;
  }

  /* artifact hash or prefix */
** or a "utc" string appears at the end of the DATE string.
*/
char *date_to_uuid(const char *zDate){
  int useUtc = 0;
  int n;
  char *zCopy = 0;
  char *zUuid;

  if( memcmp(zDate, "date:", 5)==0 ){
    zDate += 5;
  if( nXTag>=4 && nXTag<=HNAME_MAX && validate16(zXTag, nXTag) ){
    Stmt q;
    char zUuid[HNAME_MAX+1];
    memcpy(zUuid, zXTag, nXTag);
    zUuid[nXTag] = 0;
    canonical16(zUuid, nXTag);
    rid = 0;
    if( zType[0]=='*' ){
      db_prepare(&q, "SELECT rid FROM blob WHERE uuid GLOB '%q*'", zUuid);
    }else{
      db_prepare(&q,
        "SELECT blob.rid"
        "  FROM blob CROSS JOIN event"
        " WHERE blob.uuid GLOB '%q*'"
        "   AND event.objid=blob.rid"
        "   AND event.type GLOB '%q'",
        zUuid, zType
      );
    }
    if( db_step(&q)==SQLITE_ROW ){
      rid = db_column_int(&q, 0);
  }else if( memcmp(zDate, "local:", 6)==0 ){
    zDate += 6;
  }else if( memcmp(zDate, "utc:", 4)==0 ){
    zDate += 4;
    useUtc = 1;
  }
      if( db_step(&q)==SQLITE_ROW ) rid = -1;
    }
  n = strlen(zDate);
  if( n<10 || !is_date(zDate) ) return 0;
    db_finalize(&q);
    if( rid ) return rid;
  if( n>4 && sqlite3_strnicmp(&zDate[n-3], "utc", 3)==0 ){
    zCopy = mprintf("%s", zDate);
    zCopy[n-3] = 0;
    zDate = zCopy;
    n -= 3;
    useUtc = 1;
  }

  if( zType[0]=='w' ){
  zUuid = db_text(0,
    "SELECT (SELECT uuid FROM blob WHERE rid=event.objid)"
    "  FROM event"
    " WHERE mtime<=julianday(%Q %s) AND type='ci'"
    rid = db_int(0,
      "SELECT event.objid, max(event.mtime)"
      "  FROM tag, tagxref, event"
      " WHERE tag.tagname='wiki-%q' "
    " ORDER BY mtime DESC LIMIT 1",
    zDate, useUtc ? "" : ",'utc'"
  );
  free(zCopy);
  return zUuid;
}

      "   AND tagxref.tagid=tag.tagid AND tagxref.tagtype>0 "
      "   AND event.objid=tagxref.rid "
      "   AND event.type GLOB '%q'",
      zTag, zType
    );
  }else{
    rid = most_recent_event_with_tag(zTag, zType);
  }

  if( rid>0 ){
    if( startOfBranch ) rid = start_of_branch(rid,1);
    return rid;
  }

  /* Pure numeric date/time */
  zDate = fossil_expand_datetime(zTag, 0);
  if( zDate ){
    rid = db_int(0,
      "SELECT objid FROM event"
      " WHERE mtime<=julianday(%Q,fromLocal()) AND type GLOB '%q'"
      " ORDER BY mtime DESC LIMIT 1",
      fossil_roundup_date(zDate), zType);
    if( rid) return rid;
  }


  /* Undocumented:  numeric tags get translated directly into the RID */
  if( memcmp(zTag, "rid:", 4)==0 ){
    zTag += 4;
    for(i=0; fossil_isdigit(zTag[i]); i++){}
    if( zTag[i]==0 ){
      if( strcmp(zType,"*")==0 ){
        rid = atoi(zTag);
      }else{
        rid = db_int(0,
          "SELECT event.objid"
          "  FROM event"
          " WHERE event.objid=%s"
          "   AND event.type GLOB '%q'", zTag /*safe-for-%s*/, zType);
      }
    }
    return rid;
  }

  /* If nothing matches and the name ends with punctuation,
  ** then the name might have originated from a URL in plain text
  ** that was incorrectly extracted from the text.  Try to remove
  ** the extra punctuation and rerun the match.
  */
  if( nTag>4
   && is_trailing_punct(zTag[nTag-1])
   && !is_trailing_punct(zTag[nTag-2])
  ){
    char *zNew = fossil_strndup(zTag, nTag-1);
    rid = symbolic_name_to_rid(zNew,zType);
    fossil_free(zNew);
  }else
  if( nTag>5
   && is_trailing_punct(zTag[nTag-1])
   && is_trailing_punct(zTag[nTag-2])
   && !is_trailing_punct(zTag[nTag-3])
  ){
    char *zNew = fossil_strndup(zTag, nTag-2);
    rid = symbolic_name_to_rid(zNew,zType);
    fossil_free(zNew);
  }
  return rid;
}

/*
** This routine takes a user-entered string and tries to convert it to
** an artifact hash.
**
** We first try to treat the string as an artifact hash, or at least a
** unique prefix of an artifact hash. The input may be in mixed case.
** If we are passed such a string, this routine has the effect of
** converting the hash [prefix] to canonical form.
**
** If the input is not a hash or a hash prefix, then try to resolve
** the name as a tag.  If multiple tags match, pick the latest.
** A caller can force this routine to skip the hash case above by
** prefixing the string with "tag:", a useful property when the tag
** may be misinterpreted as a hex ASCII string. (e.g. "decade" or "facade")
**
** If the input is not a tag, then try to match it as an ISO-8601 date
** string YYYY-MM-DD HH:MM:SS and pick the nearest check-in to that date.
** If the input is of the form "date:*" then always resolve the name as
** a date. The forms "utc:*" and "local:" are deprecated.
**
** Return 0 on success.  Return 1 if the name cannot be resolved.
** Return 2 name is ambiguous.
*/
int name_to_uuid(Blob *pName, int iErrPriority, const char *zType){
  char *zName = blob_str(pName);
  int rid = symbolic_name_to_rid(zName, zType);
  if( rid<0 ){
    fossil_error(iErrPriority, "ambiguous name: %s", zName);
    return 2;
  }else if( rid==0 ){
    fossil_error(iErrPriority, "cannot resolve name: %s", zName);
    return 1;
  }else{
    blob_reset(pName);
    db_blob(pName, "SELECT uuid FROM blob WHERE rid=%d", rid);
    return 0;
  }
}

/*
** This routine is similar to name_to_uuid() except in the form it
** takes its parameters and returns its value, and in that it does not
** treat errors as fatal. zName must be an artifact hash or prefix of
** a hash. zType is also as described for name_to_uuid(). If
** zName does not resolve, 0 is returned. If it is ambiguous, a
** negative value is returned. On success the rid is returned and
** pUuid (if it is not NULL) is set to a newly-allocated string,
** the full hash, which must eventually be free()d by the caller.
*/
int name_to_uuid2(const char *zName, const char *zType, char **pUuid){
  int rid = symbolic_name_to_rid(zName, zType);
  if((rid>0) && pUuid){
    *pUuid = (rid<RID_MAX)
      ? db_text(NULL, "SELECT uuid FROM blob WHERE rid=%d", rid)
      : NULL;
  }
  return rid;
}


/*
** name_collisions searches through events, blobs, and tickets for
** collisions of a given hash based on its length, counting only
** hashes greater than or equal to 4 hex ASCII characters (16 bits)
** in length.
*/
int name_collisions(const char *zName){
  int c = 0;         /* count of collisions for zName */
  int nLen;          /* length of zName */
  nLen = strlen(zName);
  if( nLen>=4 && nLen<=HNAME_MAX && validate16(zName, nLen) ){
    c = db_int(0,
      "SELECT"
      " (SELECT count(*) FROM ticket"
      "   WHERE tkt_uuid GLOB '%q*') +"
      " (SELECT count(*) FROM tag"
      "   WHERE tagname GLOB 'event-%q*') +"
      " (SELECT count(*) FROM blob"
      "   WHERE uuid GLOB '%q*');",
      zName, zName, zName
    );
    if( c<2 ) c = 0;
  }
  return c;
}

/*
** COMMAND:  test-name-to-id
** COMMAND: test-name-to-id
**
** Usage:  %fossil test-name-to-id [--count N] [--type ARTIFACT_TYPE] NAME
**
** Convert a name to a full artifact ID.
** Convert a NAME to a full artifact ID.  Repeat the conversion N
** times (for timing purposes) if the --count option is given.
*/
void test_name_to_id(void){
  int i;
  int n = 0;
  Blob name;
  const char *zType;

  db_must_be_within_tree();
  if( (zType = find_option("type","t",1))==0 ){
    zType = "*";
  }
  for(i=2; i<g.argc; i++){
    if( strcmp(g.argv[i],"--count")==0 && i+1<g.argc ){
      i++;
      n = atoi(g.argv[i]);
      continue;
    }
    do{
    blob_init(&name, g.argv[i], -1);
    printf("%s -> ", g.argv[i]);
    if( name_to_uuid(&name, 1) ){
      printf("ERROR: %s\n", g.zErrMsg);
      fossil_error_reset();
    }else{
      printf("%s\n", blob_buffer(&name));
    }
    blob_reset(&name);
      blob_init(&name, g.argv[i], -1);
      fossil_print("%s -> ", g.argv[i]);
      if( name_to_uuid(&name, 1, zType) ){
        fossil_print("ERROR: %s\n", g.zErrMsg);
        fossil_error_reset();
      }else{
        fossil_print("%s\n", blob_buffer(&name));
      }
      blob_reset(&name);
  }
}

    }while( n-- > 0 );
  }
}

/*
** Convert a name to a rid.  If the name is a small integer value then
** Convert a name to a rid.  If the name can be any of the various forms
** just use atoi() to do the conversion.  If the name contains alphabetic
** characters or is not an existing rid, then use name_to_uuid then
** convert the uuid to a rid.
** accepted:
**
**   * artifact hash or prefix thereof
**   * symbolic name
**   * date
**   * label:date
**   * prev, previous
**   * next
**   * tip
**
** This routine is used by command-line routines to resolve command-line inputs
** into a rid.
*/
int name_to_rid(const char *zName){
int name_to_typed_rid(const char *zName, const char *zType){
  int i;
  int rid;
  Blob name;


  if( zName==0 || zName[0]==0 ) return 0;
  rid = symbolic_name_to_rid(zName, zType);
  if( rid<0 ){
    fossil_fatal("ambiguous name: %s", zName);
  }else if( rid==0 ){
    fossil_fatal("cannot resolve name: %s", zName);
  }
  if( zName==0 || zName[0]==0 ) return 0;
  blob_init(&name, zName, -1);
  if( name_to_uuid(&name, -1) ){
    blob_reset(&name);
    for(i=0; zName[i] && isdigit(zName[i]); i++){}
    if( zName[i]==0 ){
      rid = atoi(zName);
      if( db_exists("SELECT 1 FROM blob WHERE rid=%d", rid) ){
        return rid;
      }
    }
  return rid;
}
int name_to_rid(const char *zName){
  return name_to_typed_rid(zName, "*");
}
    fossil_error(1, "no such artifact: %s", zName);
    return 0;
  }else{
    rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &name);
    blob_reset(&name);
  }
  return rid;
}


/*
** Try to resolve zQP1 into a check-in name.  If zQP1 does not exist,
** return 0.  If zQP1 exists but cannot be resolved, then also try to
** resolve zQP2 if it exists.  If zQP1 cannot be resolved but zQP2 does
** not exist, then raise an error.  If both zQP1 and zQP2 exists but
** neither can be resolved, also raise an error.
**
** If pzPick is not a NULL pointer, then *pzPick to be the value of whichever
** query parameter ended up being used.
*/
int name_choice(const char *zQP1, const char *zQP2, const char **pzPick){
  const char *zName, *zName2;
  int rid;
  zName = P(zQP1);
  if( zName==0 || zName[0]==0 ) return 0;
  rid = symbolic_name_to_rid(zName, "ci");
  if( rid>0 ){
    if( pzPick ) *pzPick = zName;
    return rid;
  }
  if( rid<0 ){
    fossil_fatal("ambiguous name: %s", zName);
  }
  zName2 = P(zQP2);
  if( zName2==0 || zName2[0]==0 ){
    fossil_fatal("cannot resolve name: %s", zName);
  }
  if( pzPick ) *pzPick = zName2;
  return name_to_typed_rid(zName2, "ci");
}

/*
** WEBPAGE: ambiguous
** URL: /ambiguous?name=UUID&src=WEBPAGE
** 
** The UUID given by the name paramager is ambiguous.  Display a page
** URL: /ambiguous?name=NAME&src=WEBPAGE
**
** The NAME given by the name parameter is ambiguous.  Display a page
** that shows all possible choices and let the user select between them.
**
** The src= query parameter is optional.  If omitted it defaults
** to "info".
*/
void ambiguous_page(void){
  Stmt q;
  const char *zName = P("name");  
  const char *zSrc = P("src");
  const char *zName = P("name");
  const char *zSrc = PD("src","info");
  char *z;
  

  if( zName==0 || zName[0]==0 || zSrc==0 || zSrc[0]==0 ){
    fossil_redirect_home();
  }
  style_header("Ambiguous Artifact ID");
  @ <p>The artifact id <b>%h(zName)</b> is ambiguous and might
  @ <p>The artifact hash prefix <b>%h(zName)</b> is ambiguous and might
  @ mean any of the following:
  @ <ol>
  z = mprintf("%s", zName);
  canonical16(z, strlen(z));
  db_prepare(&q, "SELECT uuid, rid FROM blob WHERE uuid GLOB '%q*'", z);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    int rid = db_column_int(&q, 1);
    @ <li><p><a href="%s(g.zBaseURL)/%T(zSrc)/%S(zUuid)">
    @ %S(zUuid)</a> -
    object_description(rid, 0, 0);
    @ <li><p><a href="%R/%T(zSrc)/%!S(zUuid)">
    @ %s(zUuid)</a> -
    object_description(rid, 0, 0, 0);
    @ </p></li>
  }
  db_finalize(&q);
  db_prepare(&q,
    "   SELECT tkt_rid, tkt_uuid, title"
    "     FROM ticket, ticketchng"
    "    WHERE ticket.tkt_id = ticketchng.tkt_id"
    "      AND tkt_uuid GLOB '%q*'"
    " GROUP BY tkt_uuid"
    " ORDER BY tkt_ctime DESC", z);
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zTitle = db_column_text(&q, 2);
    @ <li><p><a href="%R/%T(zSrc)/%!S(zUuid)">
    @ %s(zUuid)</a> -
    @ <ul></ul>
    @ Ticket
    hyperlink_to_version(zUuid);
    @ - %h(zTitle).
    @ <ul><li>
    object_description(rid, 0, 0, 0);
    @ </li></ul>
    @ </p></li>
  }
  db_finalize(&q);
  db_prepare(&q,
    "SELECT rid, uuid FROM"
    "  (SELECT tagxref.rid AS rid, substr(tagname, 7) AS uuid"
    "     FROM tagxref, tag WHERE tagxref.tagid = tag.tagid"
    "      AND tagname GLOB 'event-%q*') GROUP BY uuid", z);
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char* zUuid = db_column_text(&q, 1);
    @ <li><p><a href="%R/%T(zSrc)/%!S(zUuid)">
    @ %s(zUuid)</a> -
    @ <ul><li>
    object_description(rid, 0, 0, 0);
    @ </li></ul>
    @ </p></li>
  }
  @ </ol>
  db_finalize(&q);
  style_footer();
  style_finish_page();
}

/*
** Convert the name in CGI parameter zParamName into a rid and return that
** rid.  If the CGI parameter is missing or is not a valid artifact tag,
** return 0.  If the CGI parameter is ambiguous, redirect to a page that
** shows all possibilities and do not return.
*/
int name_to_rid_www(const char *zParamName){
  int i, rc;
  int rid;
  const char *zName = P(zParamName);
#ifdef FOSSIL_ENABLE_JSON
  Blob name;

  if(!zName && fossil_has_json()){
    zName = json_find_option_cstr(zParamName,NULL,NULL);
  }
#endif
  if( zName==0 || zName[0]==0 ) return 0;
  blob_init(&name, zName, -1);
  rc = name_to_uuid(&name, -1);
  if( rc==1 ){
  rid = symbolic_name_to_rid(zName, "*");
  if( rid<0 ){
    blob_reset(&name);
    for(i=0; zName[i] && isdigit(zName[i]); i++){}
    if( zName[i]==0 ){
      rid = atoi(zName);
    cgi_redirectf("%R/ambiguous/%T?src=%t", zName, g.zPath);
    rid = 0;
      if( db_exists("SELECT 1 FROM blob WHERE rid=%d", rid) ){
        return rid;
      }
    }
    return 0;
  }else if( rc==2 ){
    cgi_redirectf("%s/ambiguous/%T?src=%t", g.zTop, zName, g.zPath);
    return 0;
  }else{
    rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &name);
    blob_reset(&name);
  }
  return rid;
}

/*
** Given an RID of a structural artifact, which is assumed to be
** valid, this function returns one of the CFTYPE_xxx values
** describing the record type, or 0 if the RID does not refer to an
** artifact record (as determined by reading the event table).
**
** Note that this function never returns CFTYPE_ATTACHMENT or
** CFTYPE_CLUSTER because those are not used in the event table. Thus
** it cannot be used to distinguish those artifact types from
** non-artifact file content.
**
** Potential TODO: if the rid is not found in the timeline, try to
** match it to a client file and return a hypothetical new
** CFTYPE_OPAQUE or CFTYPE_NONARTIFACT if a match is found.
*/
int whatis_rid_type(int rid){
  Stmt q = empty_Stmt;
  int type = 0;
    /* Check for entries on the timeline that reference this object */
  db_prepare(&q,
     "SELECT type FROM event WHERE objid=%d", rid);
  if( db_step(&q)==SQLITE_ROW ){
    switch( db_column_text(&q,0)[0] ){
      case 'c':  type = CFTYPE_MANIFEST; break;
      case 'w':  type = CFTYPE_WIKI;     break;
      case 'e':  type = CFTYPE_EVENT;    break;
      case 'f':  type = CFTYPE_FORUM;    break;
      case 't':  type = CFTYPE_TICKET;   break;
      case 'g':  type = CFTYPE_CONTROL;  break;
      default:   break;
    }
  }
  db_finalize(&q);
  return type;
}

/*
** A proxy for whatis_rid_type() which returns a brief string (in
** static memory) describing the record type. Returns NULL if rid does
** not refer to an artifact record (as determined by reading the event
** table). The returned string is intended to be used in headers which
** can refer to different artifact types. It is not "definitive," in
** that it does not distinguish between closely-related types like
** wiki creation, edit, and removal.
*/
char const * whatis_rid_type_label(int rid){
  char const * zType = 0;
  switch( whatis_rid_type(rid) ){
    case CFTYPE_MANIFEST: zType = "Check-in";      break;
    case CFTYPE_WIKI:     zType = "Wiki-edit";     break;
    case CFTYPE_EVENT:    zType = "Technote";      break;
    case CFTYPE_FORUM:    zType = "Forum-post";    break;
    case CFTYPE_TICKET:   zType = "Ticket-change"; break;
    case CFTYPE_CONTROL:  zType = "Tag-change";    break;
    default:   break;
  }
  return zType;
}

/*
** Flag values for whatis_rid().
*/
#if INTERFACE
#define WHATIS_VERBOSE   0x01    /* Extra output */
#define WHATIS_BRIEF     0x02    /* Omit unnecessary output */
#define WHATIS_REPO      0x04    /* Show repository name */
#define WHATIS_OMIT_UNK  0x08    /* Do not show "unknown" lines */
#endif

/*
** Generate a description of artifact "rid"
*/
void whatis_rid(int rid, int flags){
  Stmt q;
  int cnt;

  /* Basic information about the object. */
  db_prepare(&q,
     "SELECT uuid, size, datetime(mtime,toLocal()), ipaddr"
     "  FROM blob, rcvfrom"
     " WHERE rid=%d"
     "   AND rcvfrom.rcvid=blob.rcvid",
     rid);
  if( db_step(&q)==SQLITE_ROW ){
    if( flags & WHATIS_VERBOSE ){
      fossil_print("artifact:   %s (%d)\n", db_column_text(&q,0), rid);
      fossil_print("size:       %d bytes\n", db_column_int(&q,1));
      fossil_print("received:   %s from %s\n",
         db_column_text(&q, 2),
         db_column_text(&q, 3));
    }else{
      fossil_print("artifact:   %s\n", db_column_text(&q,0));
      fossil_print("size:       %d bytes\n", db_column_int(&q,1));
    }
  }
  db_finalize(&q);

  /* Report any symbolic tags on this artifact */
  db_prepare(&q,
    "SELECT substr(tagname,5)"
    "  FROM tag JOIN tagxref ON tag.tagid=tagxref.tagid"
    " WHERE tagxref.rid=%d"
    "   AND tagxref.tagtype<>0"
    "   AND tagname GLOB 'sym-*'"
    " ORDER BY 1",
    rid
  );
  cnt = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPrefix = cnt++ ? ", " : "tags:       ";
    fossil_print("%s%s", zPrefix, db_column_text(&q,0));
  }
  if( cnt ) fossil_print("\n");
  db_finalize(&q);

  /* Report any HIDDEN, PRIVATE, CLUSTER, or CLOSED tags on this artifact */
  db_prepare(&q,
    "SELECT tagname"
    "  FROM tag JOIN tagxref ON tag.tagid=tagxref.tagid"
    " WHERE tagxref.rid=%d"
    "   AND tag.tagid IN (5,6,7,9)"
    " ORDER BY 1",
    rid
  );
  cnt = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPrefix = cnt++ ? ", " : "raw-tags:   ";
    fossil_print("%s%s", zPrefix, db_column_text(&q,0));
  }
  if( cnt ) fossil_print("\n");
  db_finalize(&q);

  /* Check for entries on the timeline that reference this object */
  db_prepare(&q,
     "SELECT type, datetime(mtime,toLocal()),"
     "       coalesce(euser,user), coalesce(ecomment,comment)"
     "  FROM event WHERE objid=%d", rid);
  if( db_step(&q)==SQLITE_ROW ){
    const char *zType;
    switch( db_column_text(&q,0)[0] ){
      case 'c':  zType = "Check-in";       break;
      case 'w':  zType = "Wiki-edit";      break;
      case 'e':  zType = "Technote";       break;
      case 'f':  zType = "Forum-post";     break;
      case 't':  zType = "Ticket-change";  break;
      case 'g':  zType = "Tag-change";     break;
      default:   zType = "Unknown";        break;
    }
    fossil_print("type:       %s by %s on %s\n", zType, db_column_text(&q,2),
                 db_column_text(&q, 1));
    fossil_print("comment:    ");
    comment_print(db_column_text(&q,3), 0, 12, -1, get_comment_format());
    cnt++;
  }
  db_finalize(&q);

  /* Check to see if this object is used as a file in a check-in */
  db_prepare(&q,
    "SELECT filename.name, blob.uuid, datetime(event.mtime,toLocal()),"
    "       coalesce(euser,user), coalesce(ecomment,comment)"
    "  FROM mlink, filename, blob, event"
    " WHERE mlink.fid=%d"
    "   AND filename.fnid=mlink.fnid"
    "   AND event.objid=mlink.mid"
    "   AND blob.rid=mlink.mid"
    " ORDER BY event.mtime %s /*sort*/",
    rid,
    (flags & WHATIS_BRIEF) ? "LIMIT 1" : "DESC");
  while( db_step(&q)==SQLITE_ROW ){
    if( flags & WHATIS_BRIEF ){
      fossil_print("mtime:      %s\n", db_column_text(&q,2));
    }
    fossil_print("file:       %s\n", db_column_text(&q,0));
    fossil_print("            part of [%S] by %s on %s\n",
      db_column_text(&q, 1),
      db_column_text(&q, 3),
      db_column_text(&q, 2));
    fossil_print("            ");
    comment_print(db_column_text(&q,4), 0, 12, -1, get_comment_format());
    cnt++;
  }
  db_finalize(&q);

  /* Check to see if this object is used as an attachment */
  db_prepare(&q,
    "SELECT attachment.filename,"
    "       attachment.comment,"
    "       attachment.user,"
    "       datetime(attachment.mtime,toLocal()),"
    "       attachment.target,"
    "       CASE WHEN EXISTS(SELECT 1 FROM tag WHERE tagname=('tkt-'||target))"
    "            THEN 'ticket'"
    "       WHEN EXISTS(SELECT 1 FROM tag WHERE tagname=('wiki-'||target))"
    "            THEN 'wiki' END,"
    "       attachment.attachid,"
    "       (SELECT uuid FROM blob WHERE rid=attachid)"
    "  FROM attachment JOIN blob ON attachment.src=blob.uuid"
    " WHERE blob.rid=%d",
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("attachment: %s\n", db_column_text(&q,0));
    fossil_print("            attached to %s %s\n",
                 db_column_text(&q,5), db_column_text(&q,4));
    if( flags & WHATIS_VERBOSE ){
      fossil_print("            via %s (%d)\n",
                   db_column_text(&q,7), db_column_int(&q,6));
    }else{
      fossil_print("            via %s\n",
                   db_column_text(&q,7));
    }
    fossil_print("            by user %s on %s\n",
                 db_column_text(&q,2), db_column_text(&q,3));
    fossil_print("            ");
    comment_print(db_column_text(&q,1), 0, 12, -1, get_comment_format());
    cnt++;
  }
  db_finalize(&q);

  /* If other information available, try to describe the object */
  if( cnt==0 ){
    char *zWhere = mprintf("=%d", rid);
    char *zDesc;
    describe_artifacts(zWhere);
    free(zWhere);
    zDesc = db_text(0,
       "SELECT printf('%%-12s%%s %%s',type||':',summary,substr(ref,1,16))"
       "  FROM description WHERE rid=%d", rid);
    fossil_print("%s\n", zDesc);
    fossil_free(zDesc);
  }
}

/*
** Generate a description of artifact from it symbolic name.
*/
void whatis_artifact(
    const char *zName,    /* Symbolic name or full hash */
    const char *zFileName,/* Optional: original filename (in file mode) */
    const char *zType,    /* Artifact type filter */
    int mFlags            /* WHATIS_* flags */
){
  int rid = symbolic_name_to_rid(zName, zType);
  if( rid<0 ){
    Stmt q;
    int cnt = 0;
    if( mFlags & WHATIS_REPO ){
      fossil_print("\nrepository: %s\n", g.zRepositoryName);
    }
    if( zFileName ){
      fossil_print("%-12s%s\n", "name:", zFileName);
    }
    fossil_print("%-12s%s (ambiguous)\n", "hash:", zName);
    db_prepare(&q,
        "SELECT rid FROM blob WHERE uuid>=lower(%Q) AND uuid<(lower(%Q)||'z')",
        zName, zName
        );
    while( db_step(&q)==SQLITE_ROW ){
      if( cnt++ ) fossil_print("%12s---- meaning #%d ----\n", " ", cnt);
      whatis_rid(db_column_int(&q, 0), mFlags);
    }
    db_finalize(&q);
  }else if( rid==0 ){
    if( (mFlags & WHATIS_OMIT_UNK)==0 ){
                 /* 0123456789 12 */
      if( zFileName ){
        fossil_print("%-12s%s\n", "name:", zFileName);
      }
      fossil_print("unknown:    %s\n", zName);
    }
  }else{
    if( mFlags & WHATIS_REPO ){
      fossil_print("\nrepository: %s\n", g.zRepositoryName);
    }
    if( zFileName ){
      zName = zFileName;
    }
    fossil_print("%-12s%s\n", "name:", zName);
    whatis_rid(rid, mFlags);
  }
}

/*
** COMMAND: whatis*
**
** Usage: %fossil whatis NAME
**
** Resolve the symbol NAME into its canonical artifact hash
** artifact name and provide a description of what role that artifact
** plays.
**
** Options:
**    -f|--file            Find artifacts with the same hash as file NAME.
**                         If NAME is "-", read content from standard input.
**    -q|--quiet           Show nothing if NAME is not found
**    --type TYPE          Only find artifacts of TYPE (one of: 'ci', 't',
**                         'w', 'g', or 'e')
**    -v|--verbose         Provide extra information (such as the RID)
*/
void whatis_cmd(void){
  int mFlags = 0;
  int fileFlag;
  int i;
  const char *zType = 0;
  db_find_and_open_repository(0,0);
  if( find_option("verbose","v",0)!=0 ){
    mFlags |= WHATIS_VERBOSE;
  }
  if( find_option("quiet","q",0)!=0 ){
    mFlags |= WHATIS_OMIT_UNK | WHATIS_REPO;
  }
  fileFlag = find_option("file","f",0)!=0;
  zType = find_option("type",0,1);

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc<3 ) usage("NAME ...");
  for(i=2; i<g.argc; i++){
    const char *zName = g.argv[i];
    if( i>2 ) fossil_print("%.79c\n",'-');
    if( fileFlag ){
      Blob in;
      Blob hash = empty_blob;
      const char *zHash;
      /* Always follow symlinks (when applicable) */
      blob_read_from_file(&in, zName, ExtFILE);

      /* First check the auxiliary hash to see if there is already an artifact
      ** that uses the auxiliary hash name */
      hname_hash(&in, 1, &hash);
      zHash = (const char*)blob_str(&hash);
      if( fast_uuid_to_rid(zHash)==0 ){
        /* No existing artifact with the auxiliary hash name.  Therefore, use
        ** the primary hash name. */
        blob_reset(&hash);
        hname_hash(&in, 0, &hash);
        zHash = (const char*)blob_str(&hash);
      }
      whatis_artifact(zHash, zName, zType, mFlags);
      blob_reset(&hash);
    }else{
      whatis_artifact(zName, 0, zType, mFlags);
    }
  }
}

/*
** COMMAND: test-whatis-all
**
** Usage: %fossil test-whatis-all
**
** Show "whatis" information about every artifact in the repository
*/
void test_whatis_all_cmd(void){
  Stmt q;
  int cnt = 0;
  db_find_and_open_repository(0,0);
  db_prepare(&q, "SELECT rid FROM blob ORDER BY rid");
  while( db_step(&q)==SQLITE_ROW ){
    if( cnt++ ) fossil_print("%.79c\n", '-');
    whatis_rid(db_column_int(&q,0), 1);
  }
  db_finalize(&q);
}


/*
** COMMAND: test-ambiguous
**
** Usage: %fossil test-ambiguous [--minsize N]
**
** Show a list of ambiguous artifact hash abbreviations of N characters or
** more where N defaults to 4.  Change N to a different value using
** the "--minsize N" command-line option.
*/
void test_ambiguous_cmd(void){
  Stmt q, ins;
  int i;
  int minSize = 4;
  const char *zMinsize;
  char zPrev[100];
  db_find_and_open_repository(0,0);
  zMinsize = find_option("minsize",0,1);
  if( zMinsize && atoi(zMinsize)>0 ) minSize = atoi(zMinsize);
  db_multi_exec("CREATE TEMP TABLE dups(uuid, cnt)");
  db_prepare(&ins,"INSERT INTO dups(uuid) VALUES(substr(:uuid,1,:cnt))");
  db_prepare(&q,
    "SELECT uuid FROM blob "
    "UNION "
    "SELECT substr(tagname,7) FROM tag WHERE tagname GLOB 'event-*' "
    "UNION "
    "SELECT tkt_uuid FROM ticket "
    "ORDER BY 1"
  );
  zPrev[0] = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    for(i=0; zUuid[i]==zPrev[i] && zUuid[i]!=0; i++){}
    if( i>=minSize ){
      db_bind_int(&ins, ":cnt", i);
      db_bind_text(&ins, ":uuid", zUuid);
      db_step(&ins);
      db_reset(&ins);
    }
    sqlite3_snprintf(sizeof(zPrev), zPrev, "%s", zUuid);
  }
  db_finalize(&ins);
  db_finalize(&q);
  db_prepare(&q, "SELECT uuid FROM dups ORDER BY length(uuid) DESC, uuid");
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("%s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);
}

/*
** Schema for the description table
*/
static const char zDescTab[] =
@ CREATE TEMP TABLE IF NOT EXISTS description(
@   rid INTEGER PRIMARY KEY,       -- RID of the object
@   uuid TEXT,                     -- hash of the object
@   ctime DATETIME,                -- Time of creation
@   isPrivate BOOLEAN DEFAULT 0,   -- True for unpublished artifacts
@   type TEXT,                     -- file, check-in, wiki, ticket, etc.
@   rcvid INT,                     -- When the artifact was received
@   summary TEXT,                  -- Summary comment for the object
@   ref TEXT                       -- hash of an object to link against
@ );
@ CREATE INDEX IF NOT EXISTS desctype
@   ON description(summary) WHERE summary='unknown';
;

/*
** Attempt to describe all phantom artifacts.  The artifacts are
** already loaded into the description table and have summary='unknown'.
** This routine attempts to generate a better summary, and possibly
** fill in the ref field.
*/
static void describe_unknown_artifacts(){
  /* Try to figure out the origin of unknown artifacts */
  db_multi_exec(
    "REPLACE INTO description(rid,uuid,isPrivate,type,summary,ref)\n"
    "  SELECT description.rid, description.uuid, isPrivate, type,\n"
    "         CASE WHEN plink.isprim THEN '' ELSE 'merge ' END ||\n"
    "         'parent of check-in', blob.uuid\n"
    "    FROM description, plink, blob\n"
    "   WHERE description.summary='unknown'\n"
    "     AND plink.pid=description.rid\n"
    "     AND blob.rid=plink.cid;"
  );
  db_multi_exec(
    "REPLACE INTO description(rid,uuid,isPrivate,type,summary,ref)\n"
    "  SELECT description.rid, description.uuid, isPrivate, type,\n"
    "         'child of check-in', blob.uuid\n"
    "    FROM description, plink, blob\n"
    "   WHERE description.summary='unknown'\n"
    "     AND plink.cid=description.rid\n"
    "     AND blob.rid=plink.pid;"
  );
  db_multi_exec(
    "REPLACE INTO description(rid,uuid,isPrivate,type,summary,ref)\n"
    "  SELECT description.rid, description.uuid, isPrivate, type,\n"
    "         'check-in referenced by \"'||tag.tagname ||'\" tag',\n"
    "         blob.uuid\n"
    "    FROM description, tagxref, tag, blob\n"
    "   WHERE description.summary='unknown'\n"
    "     AND tagxref.origid=description.rid\n"
    "     AND tag.tagid=tagxref.tagid\n"
    "     AND blob.rid=tagxref.srcid;"
  );
  db_multi_exec(
    "REPLACE INTO description(rid,uuid,isPrivate,type,summary,ref)\n"
    "  SELECT description.rid, description.uuid, isPrivate, type,\n"
    "         'file \"'||filename.name||'\"',\n"
    "         blob.uuid\n"
    "    FROM description, mlink, filename, blob\n"
    "   WHERE description.summary='unknown'\n"
    "     AND mlink.fid=description.rid\n"
    "     AND blob.rid=mlink.mid\n"
    "     AND filename.fnid=mlink.fnid;"
  );
  if( !db_exists("SELECT 1 FROM description WHERE summary='unknown'") ){
    return;
  }
  add_content_sql_commands(g.db);
  db_multi_exec(
    "REPLACE INTO description(rid,uuid,isPrivate,type,summary,ref)\n"
    "  SELECT description.rid, description.uuid, isPrivate, type,\n"
    "         'referenced by cluster', blob.uuid\n"
    "    FROM description, tagxref, blob\n"
    "   WHERE description.summary='unknown'\n"
    "     AND tagxref.tagid=(SELECT tagid FROM tag WHERE tagname='cluster')\n"
    "     AND blob.rid=tagxref.rid\n"
    "     AND CAST(content(blob.uuid) AS text)"
    "                   GLOB ('*M '||description.uuid||'*');"
  );
}

/*
** Create the description table if it does not already exists.
** Populate fields of this table with descriptions for all artifacts
** whose RID matches the SQL expression in zWhere.
*/
void describe_artifacts(const char *zWhere){
  db_multi_exec("%s", zDescTab/*safe-for-%s*/);

  /* Describe check-ins */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, event.mtime, 'checkin',\n"
          " 'check-in to '\n"
          " ||  coalesce((SELECT value FROM tagxref WHERE tagid=%d"
                     "   AND tagtype>0 AND tagxref.rid=blob.rid),'trunk')\n"
          " || ' by ' || coalesce(event.euser,event.user)\n"
          " || ' on ' || strftime('%%Y-%%m-%%d %%H:%%M',event.mtime)\n"
    "  FROM event, blob\n"
    " WHERE (event.objid %s) AND event.type='ci'\n"
    "   AND event.objid=blob.rid;",
    TAG_BRANCH, zWhere /*safe-for-%s*/
  );

  /* Describe files */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, event.mtime,"
    "       'file', 'file '||filename.name\n"
    "  FROM mlink, blob, event, filename\n"
    " WHERE (mlink.fid %s)\n"
    "   AND mlink.mid=event.objid\n"
    "   AND filename.fnid=mlink.fnid\n"
    "   AND mlink.fid=blob.rid;",
    zWhere /*safe-for-%s*/
  );

  /* Describe tags */
  db_multi_exec(
   "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, tagxref.mtime, 'tag',\n"
    "     'tag '||substr((SELECT uuid FROM blob WHERE rid=tagxref.rid),1,16)\n"
    "  FROM tagxref, blob\n"
    " WHERE (tagxref.srcid %s) AND tagxref.srcid!=tagxref.rid\n"
    "   AND tagxref.srcid=blob.rid;",
    zWhere /*safe-for-%s*/
  );

  /* Cluster artifacts */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, rcvfrom.mtime,"
    "       'cluster', 'cluster'\n"
    "  FROM tagxref, blob, rcvfrom\n"
    " WHERE (tagxref.rid %s)\n"
    "   AND tagxref.tagid=(SELECT tagid FROM tag WHERE tagname='cluster')\n"
    "   AND blob.rid=tagxref.rid"
    "   AND rcvfrom.rcvid=blob.rcvid;",
    zWhere /*safe-for-%s*/
  );

  /* Ticket change artifacts */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, tagxref.mtime, 'ticket',\n"
    "       'ticket '||substr(tag.tagname,5,21)\n"
    "  FROM tagxref, tag, blob\n"
    " WHERE (tagxref.rid %s)\n"
    "   AND tag.tagid=tagxref.tagid\n"
    "   AND tag.tagname GLOB 'tkt-*'"
    "   AND blob.rid=tagxref.rid;",
    zWhere /*safe-for-%s*/
  );

  /* Wiki edit artifacts */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, tagxref.mtime, 'wiki',\n"
    "       printf('wiki \"%%s\"',substr(tag.tagname,6))\n"
    "  FROM tagxref, tag, blob\n"
    " WHERE (tagxref.rid %s)\n"
    "   AND tag.tagid=tagxref.tagid\n"
    "   AND tag.tagname GLOB 'wiki-*'"
    "   AND blob.rid=tagxref.rid;",
    zWhere /*safe-for-%s*/
  );

  /* Event edit artifacts */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, tagxref.mtime, 'event',\n"
    "       'event '||substr(tag.tagname,7)\n"
    "  FROM tagxref, tag, blob\n"
    " WHERE (tagxref.rid %s)\n"
    "   AND tag.tagid=tagxref.tagid\n"
    "   AND tag.tagname GLOB 'event-*'"
    "   AND blob.rid=tagxref.rid;",
    zWhere /*safe-for-%s*/
  );

  /* Attachments */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, attachment.mtime,"
    "       'attach-control',\n"
    "       'attachment-control for '||attachment.filename\n"
    "  FROM attachment, blob\n"
    " WHERE (attachment.attachid %s)\n"
    "   AND blob.rid=attachment.attachid",
    zWhere /*safe-for-%s*/
  );
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
    "SELECT blob.rid, blob.uuid, blob.rcvid, attachment.mtime, 'attachment',\n"
    "       'attachment '||attachment.filename\n"
    "  FROM attachment, blob\n"
    " WHERE (blob.rid %s)\n"
    "   AND blob.rid NOT IN (SELECT rid FROM description)\n"
    "   AND blob.uuid=attachment.src",
    zWhere /*safe-for-%s*/
  );

  /* Forum posts */
  if( db_table_exists("repository","forumpost") ){
    db_multi_exec(
      "INSERT OR IGNORE INTO description(rid,uuid,rcvid,ctime,type,summary)\n"
      "SELECT postblob.rid, postblob.uuid, postblob.rcvid,"
      "       forumpost.fmtime, 'forumpost',\n"
      "       CASE WHEN fpid=froot THEN 'forum-post '\n"
      "            ELSE 'forum-reply-to ' END || substr(rootblob.uuid,1,14)\n"
      "  FROM forumpost, blob AS postblob, blob AS rootblob\n"
      " WHERE (forumpost.fpid %s)\n"
      "   AND postblob.rid=forumpost.fpid"
      "   AND rootblob.rid=forumpost.froot",
      zWhere /*safe-for-%s*/
    );
  }

  /* Mark all other artifacts as "unknown" for now */
  db_multi_exec(
    "INSERT OR IGNORE INTO description(rid,uuid,rcvid,type,summary)\n"
    "SELECT blob.rid, blob.uuid,blob.rcvid,\n"
    "       CASE WHEN EXISTS(SELECT 1 FROM phantom WHERE rid=blob.rid)\n"
           " THEN 'phantom' ELSE '' END,\n"
    "       'unknown'\n"
    "  FROM blob\n"
    " WHERE (blob.rid %s)\n"
    "   AND (blob.rid NOT IN (SELECT rid FROM description));",
    zWhere /*safe-for-%s*/
  );

  /* Mark private elements */
  db_multi_exec(
   "UPDATE description SET isPrivate=1 WHERE rid IN private"
  );

  if( db_exists("SELECT 1 FROM description WHERE summary='unknown'") ){
    describe_unknown_artifacts();
  }
}

/*
** Print the content of the description table on stdout.
**
** The description table is computed using the WHERE clause zWhere if
** the zWhere parameter is not NULL.  If zWhere is NULL, then this
** routine assumes that the description table already exists and is
** populated and merely prints the contents.
*/
int describe_artifacts_to_stdout(const char *zWhere, const char *zLabel){
  Stmt q;
  int cnt = 0;
  if( zWhere!=0 ) describe_artifacts(zWhere);
  db_prepare(&q,
    "SELECT uuid, summary, coalesce(ref,''), isPrivate\n"
    "  FROM description\n"
    " ORDER BY ctime, type;"
  );
  while( db_step(&q)==SQLITE_ROW ){
    if( zLabel ){
      fossil_print("%s\n", zLabel);
      zLabel = 0;
    }
    fossil_print("  %.16s %s %s", db_column_text(&q,0),
           db_column_text(&q,1), db_column_text(&q,2));
    if( db_column_int(&q,3) ) fossil_print(" (private)");
    fossil_print("\n");
    cnt++;
  }
  db_finalize(&q);
  if( zWhere!=0 ) db_multi_exec("DELETE FROM description;");
  return cnt;
}

/*
** COMMAND: test-describe-artifacts
**
** Usage: %fossil test-describe-artifacts [--from S] [--count N]
**
** Display a one-line description of every artifact.
*/
void test_describe_artifacts_cmd(void){
  int iFrom = 0;
  int iCnt = 1000000;
  const char *z;
  char *zRange;
  db_find_and_open_repository(0,0);
  z = find_option("from",0,1);
  if( z ) iFrom = atoi(z);
  z = find_option("count",0,1);
  if( z ) iCnt = atoi(z);
  zRange = mprintf("BETWEEN %d AND %d", iFrom, iFrom+iCnt-1);
  describe_artifacts_to_stdout(zRange, 0);
}

/*
** WEBPAGE: bloblist
**
** Return a page showing all artifacts in the repository.  Query parameters:
**
**   n=N         Show N artifacts
**   s=S         Start with artifact number S
**   priv        Show only unpublished or private artifacts
**   phan        Show only phantom artifacts
**   hclr        Color code hash types (SHA1 vs SHA3)
*/
void bloblist_page(void){
  Stmt q;
  int s = atoi(PD("s","0"));
  int n = atoi(PD("n","5000"));
  int mx = db_int(0, "SELECT max(rid) FROM blob");
  int privOnly = PB("priv");
  int phantomOnly = PB("phan");
  int hashClr = PB("hclr");
  char *zRange;
  char *zSha1Bg;
  char *zSha3Bg;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  style_header("List Of Artifacts");
  style_submenu_element("250 Largest", "bigbloblist");
  if( g.perm.Admin ){
    style_submenu_element("Artifact Log", "rcvfromlist");
  }
  if( !phantomOnly ){
    style_submenu_element("Phantoms", "bloblist?phan");
  }
  if( g.perm.Private || g.perm.Admin ){
    if( !privOnly ){
      style_submenu_element("Private", "bloblist?priv");
    }
  }else{
    privOnly = 0;
  }
  if( g.perm.Write ){
    style_submenu_element("Artifact Stats", "artifact_stats");
  }
  if( !privOnly && !phantomOnly && mx>n && P("s")==0 ){
    int i;
    @ <p>Select a range of artifacts to view:</p>
    @ <ul>
    for(i=1; i<=mx; i+=n){
      @ <li> %z(href("%R/bloblist?s=%d&n=%d",i,n))
      @ %d(i)..%d(i+n-1<mx?i+n-1:mx)</a>
    }
    @ </ul>
    style_finish_page();
    return;
  }
  if( phantomOnly || privOnly || mx>n ){
    style_submenu_element("Index", "bloblist");
  }
  if( privOnly ){
    zRange = mprintf("IN private");
  }else if( phantomOnly ){
    zRange = mprintf("IN phantom");
  }else{
    zRange = mprintf("BETWEEN %d AND %d", s, s+n-1);
  }
  describe_artifacts(zRange);
  fossil_free(zRange);
  db_prepare(&q,
    "SELECT rid, uuid, summary, isPrivate, type='phantom', rcvid, ref"
    "  FROM description ORDER BY rid"
  );
  if( skin_detail_boolean("white-foreground") ){
    zSha1Bg = "#714417";
    zSha3Bg = "#177117";
  }else{
    zSha1Bg = "#ebffb0";
    zSha3Bg = "#b0ffb0";
  }
  @ <table cellpadding="2" cellspacing="0" border="1">
  if( g.perm.Admin ){
    @ <tr><th>RID<th>Hash<th>Rcvid<th>Description<th>Ref<th>Remarks
  }else{
    @ <tr><th>RID<th>Hash<th>Description<th>Ref<th>Remarks
  }
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q,0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDesc = db_column_text(&q, 2);
    int isPriv = db_column_int(&q,3);
    int isPhantom = db_column_int(&q,4);
    const char *zRef = db_column_text(&q,6);
    if( isPriv && !isPhantom && !g.perm.Private && !g.perm.Admin ){
      /* Don't show private artifacts to users without Private (x) permission */
      continue;
    }
    if( hashClr ){
      const char *zClr = db_column_bytes(&q,1)>40 ? zSha3Bg : zSha1Bg;
      @ <tr style='background-color:%s(zClr);'><td align="right">%d(rid)</td>
    }else{
      @ <tr><td align="right">%d(rid)</td>
    }
    @ <td>&nbsp;%z(href("%R/info/%!S",zUuid))%S(zUuid)</a>&nbsp;</td>
    if( g.perm.Admin ){
      int rcvid = db_column_int(&q,5);
      if( rcvid<=0 ){
        @ <td>&nbsp;
      }else{
        @ <td><a href='%R/rcvfrom?rcvid=%d(rcvid)'>%d(rcvid)</a>
      }
    }
    @ <td align="left">%h(zDesc)</td>
    if( zRef && zRef[0] ){
      @ <td>%z(href("%R/info/%!S",zRef))%S(zRef)</a>
    }else{
      @ <td>&nbsp;
    }
    if( isPriv || isPhantom ){
      if( isPriv==0 ){
        @ <td>phantom</td>
      }else if( isPhantom==0 ){
        @ <td>private</td>
      }else{
        @ <td>private,phantom</td>
      }
    }else{
      @ <td>&nbsp;
    }
    @ </tr>
  }
  @ </table>
  db_finalize(&q);
  style_finish_page();
}

/*
** Output HTML that shows a table of all public phantoms.
*/
void table_of_public_phantoms(void){
  Stmt q;
  char *zRange;
  double rNow;
  zRange = mprintf("IN (SELECT rid FROM phantom EXCEPT"
                   " SELECT rid FROM private)");
  describe_artifacts(zRange);
  fossil_free(zRange);
  db_prepare(&q,
    "SELECT rid, uuid, summary, ref,"
    "  (SELECT mtime FROM blob, rcvfrom"
    "    WHERE blob.uuid=ref AND rcvfrom.rcvid=blob.rcvid)"
    "  FROM description ORDER BY rid"
  );
  rNow = db_double(0.0, "SELECT julianday('now')");
  @ <table cellpadding="2" cellspacing="0" border="1">
  @ <tr><th>RID<th>Description<th>Source<th>Age
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q,0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDesc = db_column_text(&q, 2);
    const char *zRef = db_column_text(&q,3);
    double mtime = db_column_double(&q,4);
    @ <tr><td valign="top">%d(rid)</td>
    @ <td valign="top" align="left">%h(zUuid)<br>%h(zDesc)</td>
    if( zRef && zRef[0] ){
      @ <td valign="top">%z(href("%R/info/%!S",zRef))%!S(zRef)</a>
      if( mtime>0 ){
        char *zAge = human_readable_age(rNow - mtime);
        @ <td valign="top">%h(zAge)
        fossil_free(zAge);
      }else{
        @ <td>&nbsp;
      }
    }else{
      @ <td>&nbsp;<td>&nbsp;
    }
    @ </tr>
  }
  @ </table>
  db_finalize(&q);
}

/*
** WEBPAGE: phantoms
**
** Show a list of all "phantom" artifacts that are not marked as "private".
**
** A "phantom" artifact is an artifact whose hash named appears in some
** artifact but whose content is unknown.  For example, if a manifest
** references a particular SHA3 hash of a file, but that SHA3 hash is
** not on the shunning list and is not in the database, then the file
** is a phantom.  We know it exists, but we do not know its content.
**
** Whenever a sync occurs, both each party looks at its phantom list
** and for every phantom that is not also marked private, it asks the
** other party to send it the content.  This mechanism helps keep all
** repositories synced up.
**
** This page is similar to the /bloblist page in that it lists artifacts.
** But this page is a special case in that it only shows phantoms that
** are not private.  In other words, this page shows all phantoms that
** generate extra network traffic on every sync request.
*/
void phantom_list_page(void){
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_header("Public Phantom Artifacts");
  if( g.perm.Admin ){
    style_submenu_element("Artifact Log", "rcvfromlist");
    style_submenu_element("Artifact List", "bloblist");
  }
  if( g.perm.Write ){
    style_submenu_element("Artifact Stats", "artifact_stats");
  }
  table_of_public_phantoms();
  style_finish_page();
}

/*
** WEBPAGE: bigbloblist
**
** Return a page showing the largest artifacts in the repository in order
** of decreasing size.
**
**   n=N         Show the top N artifacts (default: 250)
*/
void bigbloblist_page(void){
  Stmt q;
  int n = atoi(PD("n","250"));

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  if( g.perm.Admin ){
    style_submenu_element("Artifact Log", "rcvfromlist");
  }
  if( g.perm.Write ){
    style_submenu_element("Artifact Stats", "artifact_stats");
  }
  style_submenu_element("All Artifacts", "bloblist");
  style_header("%d Largest Artifacts", n);
  db_multi_exec(
    "CREATE TEMP TABLE toshow(rid INTEGER PRIMARY KEY);"
    "INSERT INTO toshow(rid)"
    "  SELECT rid FROM blob"
    "   ORDER BY length(content) DESC"
    "   LIMIT %d;", n
  );
  describe_artifacts("IN toshow");
  db_prepare(&q,
    "SELECT description.rid, description.uuid, description.summary,"
    "       length(blob.content), coalesce(delta.srcid,''),"
    "       datetime(description.ctime)"
    "  FROM description, blob LEFT JOIN delta ON delta.rid=blob.rid"
    " WHERE description.rid=blob.rid"
    " ORDER BY length(content) DESC"
  );
  @ <table cellpadding="2" cellspacing="0" border="1" \
  @  class='sortable' data-column-types='NnnttT' data-init-sort='0'>
  @ <thead><tr><th align="right">Size<th align="right">RID
  @ <th align="right">From<th>Hash<th>Description<th>Date</tr></thead>
  @ <tbody>
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q,0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDesc = db_column_text(&q, 2);
    int sz = db_column_int(&q,3);
    const char *zSrcId = db_column_text(&q,4);
    const char *zDate = db_column_text(&q,5);
    @ <tr><td align="right">%d(sz)</td>
    @ <td align="right">%d(rid)</td>
    @ <td align="right">%s(zSrcId)</td>
    @ <td>&nbsp;%z(href("%R/info/%!S",zUuid))%S(zUuid)</a>&nbsp;</td>
    @ <td align="left">%h(zDesc)</td>
    @ <td align="left">%z(href("%R/timeline?c=%T",zDate))%s(zDate)</a></td>
    @ </tr>
  }
  @ </tbody></table>
  db_finalize(&q);
  style_table_sorter();
  style_finish_page();
}

/*
** WEBPAGE: deltachain
**
** Usage:  /deltachain/RID
**
** The RID query parameter is required.  Generate a page with a table
** showing storage characteristics of RID and other artifacts that are
** derived from RID via delta.
*/
void deltachain_page(void){
  Stmt q;
  int id = atoi(PD("name","0"));
  int top;
  i64 nStored = 0;
  i64 nExpanded = 0;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  top = db_int(id,
    "WITH RECURSIVE chain(aa,bb) AS (\n"
    "  SELECT rid, srcid FROM delta WHERE rid=%d\n"
    "  UNION ALL\n"
    "  SELECT bb, delta.srcid"
    "    FROM chain LEFT JOIN delta ON delta.rid=bb"
    "   WHERE bb IS NOT NULL\n"
    ")\n"
    "SELECT aa FROM chain WHERE bb IS NULL",
    id
  );
  style_header("Delta Chain Containing Artifact %d", id);
  db_multi_exec(
    "CREATE TEMP TABLE toshow(rid INT, gen INT);\n"
    "WITH RECURSIVE tx(id,px) AS (\n"
    "  VALUES(%d,0)\n"
    "  UNION ALL\n"
    "  SELECT delta.rid, px+1 FROM tx, delta where delta.srcid=tx.id\n"
    "  ORDER BY 2\n"
    ") "
    "INSERT INTO toshow(rid,gen) SELECT id,px FROM tx;",
    top
  );
  db_multi_exec("CREATE INDEX toshow_rid ON toshow(rid);");
  describe_artifacts("IN (SELECT rid FROM toshow)");
  db_prepare(&q,
    "SELECT description.rid, description.uuid, description.summary,"
    "       length(blob.content), coalesce(delta.srcid,''),"
    "       datetime(description.ctime), toshow.gen, blob.size"
    "  FROM description, toshow, blob LEFT JOIN delta ON delta.rid=blob.rid"
    " WHERE description.rid=blob.rid"
    "   AND toshow.rid=description.rid"
    " ORDER BY toshow.gen, description.ctime"
  );
  @ <table cellpadding="2" cellspacing="0" border="1" \
  @  class='sortable' data-column-types='nNnnttT' data-init-sort='0'>
  @ <thead><tr><th align="right">Level</th>
  @ <th align="right">Size<th align="right">RID
  @ <th align="right">From<th>Hash<th>Description<th>Date</tr></thead>
  @ <tbody>
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q,0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zDesc = db_column_text(&q, 2);
    int sz = db_column_int(&q,3);
    const char *zSrcId = db_column_text(&q,4);
    const char *zDate = db_column_text(&q,5);
    int gen = db_column_int(&q,6);
    nExpanded += db_column_int(&q,7);
    nStored += sz;
    @ <tr><td align="right">%d(gen)</td>
    @ <td align="right">%d(sz)</td>
    if( rid==id ){
      @ <td align="right"><b>%d(rid)</b></td>
    }else{
      @ <td align="right">%d(rid)</td>
    }
    @ <td align="right">%s(zSrcId)</td>
    @ <td>&nbsp;%z(href("%R/info/%!S",zUuid))%S(zUuid)</a>&nbsp;</td>
    @ <td align="left">%h(zDesc)</td>
    @ <td align="left">%z(href("%R/timeline?c=%T",zDate))%s(zDate)</a></td>
    @ </tr>
  }
  @ </tbody></table>
  db_finalize(&q);
  style_table_sorter();
  @ <p>
  @ <table border="0" cellspacing="0" cellpadding="0">
  @ <tr><td>Bytes of content</td><td>&nbsp;&nbsp;&nbsp;</td>
  @     <td align="right">%,lld(nExpanded)</td></tr>
  @ <tr><td>Bytes stored in repository</td><td></td>
  @      <td align="right">%,lld(nStored)</td>
  @ </table>
  @ </p>
  style_finish_page();
}

/*
** COMMAND: test-unsent
**
** Usage: %fossil test-unsent
**
** Show all artifacts in the unsent table
*/
void test_unsent_cmd(void){
  db_find_and_open_repository(0,0);
  describe_artifacts_to_stdout("IN unsent", 0);
}

/*
** COMMAND: test-unclustered
**
** Usage: %fossil test-unclustered
**
** Show all artifacts in the unclustered table
*/
void test_unclusterd_cmd(void){
  db_find_and_open_repository(0,0);
  describe_artifacts_to_stdout("IN unclustered", 0);
}

/*
** COMMAND: test-phantoms
**
** Usage: %fossil test-phantoms
**
** Show all phantom artifacts
*/
void test_phatoms_cmd(void){
  db_find_and_open_repository(0,0);
  describe_artifacts_to_stdout("IN (SELECT rid FROM blob WHERE size<0)", 0);
}

/* Maximum number of collision examples to remember */
#define MAX_COLLIDE 25

/*
** Generate a report on the number of collisions in artifact hashes
** generated by the SQL given in the argument.
*/
static void collision_report(const char *zSql){
  int i, j;
  int nHash = 0;
  Stmt q;
  char zPrev[HNAME_MAX+1];
  struct {
    int cnt;
    char *azHit[MAX_COLLIDE];
    char z[HNAME_MAX+1];
  } aCollide[HNAME_MAX+1];
  memset(aCollide, 0, sizeof(aCollide));
  memset(zPrev, 0, sizeof(zPrev));
  db_prepare(&q,"%s",zSql/*safe-for-%s*/);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q,0);
    int n = db_column_bytes(&q,0);
    int i;
    nHash++;
    for(i=0; zPrev[i] && zPrev[i]==zUuid[i]; i++){}
    if( i>0 && i<=HNAME_MAX ){
      if( i>=4 && aCollide[i].cnt<MAX_COLLIDE ){
        aCollide[i].azHit[aCollide[i].cnt] = mprintf("%.*s", i, zPrev);
      }
      aCollide[i].cnt++;
      if( aCollide[i].z[0]==0 ) memcpy(aCollide[i].z, zPrev, n+1);
    }
    memcpy(zPrev, zUuid, n+1);
  }
  db_finalize(&q);
  @ <table border=1><thead>
  @ <tr><th>Length<th>Instances<th>First Instance</tr>
  @ </thead><tbody>
  for(i=1; i<=HNAME_MAX; i++){
    if( aCollide[i].cnt==0 ) continue;
    @ <tr><td>%d(i)<td>%d(aCollide[i].cnt)<td>%h(aCollide[i].z)</tr>
  }
  @ </tbody></table>
  @ <p>Total number of hashes: %d(nHash)</p>
  for(i=HNAME_MAX; i>=4; i--){
    if( aCollide[i].cnt==0 ) continue;
    if( aCollide[i].cnt>200 ) break;
    if( aCollide[i].cnt<25 ){
      @ <p>Collisions of length %d(i):
    }else{
      @ <p>First 25 collisions of length %d(i):
    }
    for(j=0; j<aCollide[i].cnt && j<MAX_COLLIDE; j++){
      char *zId = aCollide[i].azHit[j];
      if( zId==0 ) continue;
      @ %z(href("%R/ambiguous/%s",zId))%h(zId)</a>
    }
  }
  for(i=4; i<count(aCollide); i++){
    for(j=0; j<aCollide[i].cnt && j<MAX_COLLIDE; j++){
      fossil_free(aCollide[i].azHit[j]);
    }
  }
}

/*
** WEBPAGE: hash-collisions
**
** Show the number of hash collisions for hash prefixes of various lengths.
*/
void hash_collisions_webpage(void){
  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_header("Hash Prefix Collisions");
  style_submenu_element("Activity Reports", "reports");
  style_submenu_element("Stats", "stat");
  @ <h1>Hash Prefix Collisions on Check-ins</h1>
  collision_report("SELECT (SELECT uuid FROM blob WHERE rid=objid)"
                   "  FROM event WHERE event.type='ci'"
                   " ORDER BY 1");
  @ <h1>Hash Prefix Collisions on All Artifacts</h1>
  collision_report("SELECT uuid FROM blob ORDER BY 1");
  style_finish_page();
}
Added src/patch.c.
























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2021 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement the "patch" command
*/
#include "config.h"
#include "patch.h"
#include <assert.h>

/*
** Try to compute the name of the computer on which this process
** is running.
*/
char *fossil_hostname(void){
  FILE *in;
  char zBuf[200];
  in = popen("hostname","r");
  if( in ){
    int n = fread(zBuf, 1, sizeof(zBuf)-1, in);
    while( n>0 && fossil_isspace(zBuf[n-1]) ){ n--; }
    if( n<0 ) n = 0;
    zBuf[n] = 0;
    pclose(in);
    return fossil_strdup(zBuf);
  }
  return 0;
}

/*
** Flags passed from the main patch_cmd() routine into subfunctions used
** to implement the various subcommands.
*/
#define PATCH_DRYRUN   0x0001
#define PATCH_VERBOSE  0x0002
#define PATCH_FORCE    0x0004
#define PATCH_RETRY    0x0008     /* Second attempt */

/*
** Implementation of the "readfile(X)" SQL function.  The entire content
** of the check-out file named X is read and returned as a BLOB.
*/
static void readfileFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zName;
  Blob x;
  sqlite3_int64 sz;
  (void)(argc);  /* Unused parameter */
  zName = (const char*)sqlite3_value_text(argv[0]);
  if( zName==0 || (zName[0]=='-' && zName[1]==0) ) return;
  sz = blob_read_from_file(&x, zName, RepoFILE);
  sqlite3_result_blob64(context, x.aData, sz, SQLITE_TRANSIENT);
  blob_reset(&x);
}

/*
** mkdelta(X,Y)
**
** X is an numeric artifact id.  Y is a filename.
**
** Compute a compressed delta that carries X into Y.  Or return
** and zero-length blob if X is equal to Y.
*/
static void mkdeltaFunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zFile;
  Blob x, y;
  int rid;
  char *aOut;
  int nOut;
  sqlite3_int64 sz;

  rid = sqlite3_value_int(argv[0]);
  if( !content_get(rid, &x) ){
    sqlite3_result_error(context, "mkdelta(X,Y): no content for X", -1);
    return;
  }
  zFile = (const char*)sqlite3_value_text(argv[1]);
  if( zFile==0 ){
    sqlite3_result_error(context, "mkdelta(X,Y): NULL Y argument", -1);
    blob_reset(&x);
    return;
  }
  sz = blob_read_from_file(&y, zFile, RepoFILE);
  if( sz<0 ){
    sqlite3_result_error(context, "mkdelta(X,Y): cannot read file Y", -1);
    blob_reset(&x);
    return;
  }
  aOut = sqlite3_malloc64(sz+70);
  if( aOut==0 ){
    sqlite3_result_error_nomem(context);
    blob_reset(&y);
    blob_reset(&x);
    return;
  }
  if( blob_size(&x)==blob_size(&y)
   && memcmp(blob_buffer(&x), blob_buffer(&y), blob_size(&x))==0
  ){
    blob_reset(&y);
    blob_reset(&x);
    sqlite3_result_blob64(context, "", 0, SQLITE_STATIC);
    return;
  }
  nOut = delta_create(blob_buffer(&x),blob_size(&x),
                      blob_buffer(&y),blob_size(&y), aOut);
  blob_reset(&x);
  blob_reset(&y);
  blob_init(&x, aOut, nOut);
  blob_compress(&x, &x);
  sqlite3_result_blob64(context, blob_buffer(&x), blob_size(&x),
                        SQLITE_TRANSIENT);
  blob_reset(&x);
}


/*
** Generate a binary patch file and store it into the file
** named zOut.  Or if zOut is NULL, write it into out.
**
** Return the number of errors.
*/
void patch_create(unsigned mFlags, const char *zOut, FILE *out){
  int vid;
  char *z;

  if( zOut && file_isdir(zOut, ExtFILE)!=0 ){
    if( mFlags & PATCH_FORCE ){
      file_delete(zOut);
    }
    if( file_isdir(zOut, ExtFILE)!=0 ){
      fossil_fatal("patch file already exists: %s", zOut);
    }
  }
  add_content_sql_commands(g.db);
  deltafunc_init(g.db);
  sqlite3_create_function(g.db, "read_co_file", 1, SQLITE_UTF8, 0,
                          readfileFunc, 0, 0);
  sqlite3_create_function(g.db, "mkdelta", 2, SQLITE_UTF8, 0,
                          mkdeltaFunc, 0, 0);
  db_multi_exec("ATTACH %Q AS patch;", zOut ? zOut : ":memory:");
  db_multi_exec(
    "PRAGMA patch.journal_mode=OFF;\n"
    "PRAGMA patch.page_size=512;\n"
    "CREATE TABLE patch.chng(\n"
    "  pathname TEXT,\n" /* Filename */
    "  origname TEXT,\n" /* Name before rename.  NULL if not renamed */
    "  hash TEXT,\n"     /* Baseline hash.  NULL for new files. */
    "  isexe BOOL,\n"    /* True if executable */
    "  islink BOOL,\n"   /* True if is a symbolic link */
    "  delta BLOB\n"     /* compressed delta. NULL if deleted.
                         **    length 0 if unchanged */
    ");"
    "CREATE TABLE patch.cfg(\n"
    "  key TEXT,\n"
    "  value ANY\n"
    ");"
  );
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, CKSIG_ENOTFILE);
  user_select();
  db_multi_exec(
    "INSERT INTO patch.cfg(key,value)"
    "SELECT 'baseline',uuid FROM blob WHERE rid=%d "
    "UNION ALL"
    " SELECT 'ckout',rtrim(%Q,'/')"
    "UNION ALL"
    " SELECT 'repo',%Q "
    "UNION ALL"
    " SELECT 'user',%Q "
    "UNION ALL"
    " SELECT 'date',julianday('now')"
    "UNION ALL"
    " SELECT name,value FROM repository.config"
    "  WHERE name IN ('project-code','project-name') "
    "UNION ALL"
    " SELECT 'fossil-date',julianday('" MANIFEST_DATE "')"
    ";", vid, g.zLocalRoot, g.zRepositoryName, g.zLogin);
  z = fossil_hostname();
  if( z ){
    db_multi_exec(
       "INSERT INTO patch.cfg(key,value)VALUES('hostname',%Q)", z);
    fossil_free(z);
  }

  /* New files */
  db_multi_exec(
    "INSERT INTO patch.chng(pathname,hash,isexe,islink,delta)"
    "  SELECT pathname, NULL, isexe, islink,"
    "         compress(read_co_file(%Q||pathname))"
    "    FROM vfile WHERE rid==0;",
    g.zLocalRoot
  );

  /* Deleted files */
  db_multi_exec(
    "INSERT INTO patch.chng(pathname,hash,isexe,islink,delta)"
    "  SELECT pathname, NULL, 0, 0, NULL"
    "    FROM vfile WHERE deleted;"
  );

  /* Changed files */
  db_multi_exec(
    "INSERT INTO patch.chng(pathname,origname,hash,isexe,islink,delta)"
    "  SELECT pathname, nullif(origname,pathname), blob.uuid, isexe, islink,"
            " mkdelta(blob.rid, %Q||pathname)"
    "    FROM vfile, blob"
    "   WHERE blob.rid=vfile.rid"
    "     AND NOT deleted AND (chnged OR origname<>pathname);",
    g.zLocalRoot
  );

  /* Merges */
  if( db_exists("SELECT 1 FROM localdb.vmerge WHERE id<=0") ){
    db_multi_exec(
      "CREATE TABLE patch.patchmerge(type TEXT,mhash TEXT);\n"
      "WITH tmap(id,type) AS (VALUES(0,'merge'),(-1,'cherrypick'),"
                                   "(-2,'backout'),(-4,'integrate'))"
      "INSERT INTO patch.patchmerge(type,mhash)"
      " SELECT tmap.type,vmerge.mhash FROM vmerge, tmap"
      "  WHERE tmap.id=vmerge.id;"
    );
  }

  /* Write the database to standard output if zOut==0 */
  if( zOut==0 ){
    sqlite3_int64 sz;
    unsigned char *pData;
    pData = sqlite3_serialize(g.db, "patch", &sz, 0);
    if( pData==0 ){
      fossil_fatal("out of memory");
    }
#ifdef _WIN32
    fflush(out);
    _setmode(_fileno(out), _O_BINARY);
#endif
    fwrite(pData, 1, sz, out);
    fflush(out);
    sqlite3_free(pData);
  }
  db_multi_exec("DETACH patch;");
}

/*
** Attempt to load and validate a patchfile identified by the first
** argument.
*/
void patch_attach(const char *zIn, FILE *in, int bIgnoreEmptyPatch){
  Stmt q;
  if( g.db==0 ){
    sqlite3_open(":memory:", &g.db);
  }
  if( zIn==0 ){
    Blob buf;
    int rc;
    int sz;
    unsigned char *pData;
    blob_init(&buf, 0, 0);
#ifdef _WIN32
    _setmode(_fileno(in), _O_BINARY);
#endif
    sz = blob_read_from_channel(&buf, in, -1);
    pData = (unsigned char*)blob_buffer(&buf);
    if( sz<512 ){
      blob_reset(&buf);
      if( bIgnoreEmptyPatch ) return;
      fossil_fatal("input is too small to be a patch file");
    }
    db_multi_exec("ATTACH ':memory:' AS patch");
    if( g.fSqlTrace ){
      fossil_trace("-- deserialize(\"patch\", pData, %lld);\n", sz);
    }
    rc = sqlite3_deserialize(g.db, "patch", pData, sz, sz, 0);
    if( rc ){
      fossil_fatal("cannot open patch database: %s", sqlite3_errmsg(g.db));
    }
  }else if( !file_isfile(zIn, ExtFILE) ){
    fossil_fatal("no such file: %s", zIn);
  }else{
    db_multi_exec("ATTACH %Q AS patch", zIn);
  }
  db_prepare(&q, "PRAGMA patch.quick_check");
  while( db_step(&q)==SQLITE_ROW ){
    if( fossil_strcmp(db_column_text(&q,0),"ok")!=0 ){
      fossil_fatal("file %s is not a well-formed Fossil patchfile", zIn);
    }
  }
  db_finalize(&q);
}

/*
** Show a summary of the content of a patch on standard output
*/
void patch_view(unsigned mFlags){
  Stmt q;
  db_prepare(&q,
    "WITH nmap(nkey,nm) AS (VALUES"
       "('baseline','BASELINE'),"
       "('project-name','PROJECT-NAME'))"
    "SELECT nm, value FROM nmap, patch.cfg WHERE nkey=key;"
  );
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("%-12s %s\n", db_column_text(&q,0), db_column_text(&q,1));
  }
  db_finalize(&q);
  if( mFlags & PATCH_VERBOSE ){
    db_prepare(&q,
      "WITH nmap(nkey,nm,isDate) AS (VALUES"
         "('project-code','PROJECT-CODE',0),"
         "('date','TIMESTAMP',1),"
         "('user','USER',0),"
         "('hostname','HOSTNAME',0),"
         "('ckout','CHECKOUT',0),"
         "('repo','REPOSITORY',0))"
      "SELECT nm, CASE WHEN isDate THEN datetime(value) ELSE value END"
      "  FROM nmap, patch.cfg WHERE nkey=key;"
    );
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%-12s %s\n", db_column_text(&q,0), db_column_text(&q,1));
    }
    db_finalize(&q);
  }
  if( db_table_exists("patch","patchmerge") ){
    db_prepare(&q, "SELECT upper(type),mhash FROM patchmerge");
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%-12s %s\n",
        db_column_text(&q,0),
        db_column_text(&q,1));
    }
    db_finalize(&q);
  }
  db_prepare(&q,
    "SELECT pathname,"                            /* 0: new name */
          " hash IS NULL AND delta IS NOT NULL,"  /* 1: isNew */
          " delta IS NULL,"                       /* 2: isDeleted */
          " origname"                             /* 3: old name or NULL */
    "  FROM patch.chng ORDER BY 1");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zClass = "EDIT";
    const char *zName = db_column_text(&q,0);
    const char *zOrigName = db_column_text(&q, 3);
    if( db_column_int(&q, 1) && zOrigName==0 ){
      zClass = "NEW";
    }else if( db_column_int(&q, 2) ){
      zClass = zOrigName==0 ? "DELETE" : 0;
    }
    if( zOrigName!=0 && zOrigName[0]!=0 ){
      fossil_print("%-12s %s -> %s\n", "RENAME",zOrigName,zName);
    }
    if( zClass ){
      fossil_print("%-12s %s\n", zClass, zName);
    }
  }
  db_finalize(&q);
}

/*
** Apply the patch currently attached as database "patch".
**
** First update the check-out to be at "baseline".  Then loop through
** and update all files.
*/
void patch_apply(unsigned mFlags){
  Stmt q;
  Blob cmd;

  blob_init(&cmd, 0, 0);
  if( unsaved_changes(0) ){
    if( (mFlags & PATCH_FORCE)==0 ){
      fossil_fatal("Cannot apply patch: there are unsaved changes "
                   "in the current check-out");
    }else{
      blob_appendf(&cmd, "%$ revert", g.nameOfExe);
      if( mFlags & PATCH_DRYRUN ){
        fossil_print("%s\n", blob_str(&cmd));
      }else{
        int rc = fossil_system(blob_str(&cmd));
        if( rc ){
          fossil_fatal("unable to revert preexisting changes: %s",
                       blob_str(&cmd));
        }
      }
      blob_reset(&cmd);
    }
  }
  file_chdir(g.zLocalRoot, 0);
  db_prepare(&q,
    "SELECT patch.cfg.value"
    "  FROM patch.cfg, localdb.vvar"
    " WHERE patch.cfg.key='baseline'"
    "   AND localdb.vvar.name='checkout-hash'"
    "   AND patch.cfg.key<>localdb.vvar.name"
  );
  if( db_step(&q)==SQLITE_ROW ){
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    blob_appendf(&cmd, " update %s", db_column_text(&q, 0));
    if( mFlags & PATCH_VERBOSE ){
      fossil_print("%-10s %s\n", "BASELINE", db_column_text(&q,0));
    }
  }
  db_finalize(&q);
  if( blob_size(&cmd)>0 ){
    if( mFlags & PATCH_DRYRUN ){
      fossil_print("%s\n", blob_str(&cmd));
    }else{
      int rc = fossil_system(blob_str(&cmd));
      if( rc ){
        fossil_fatal("unable to update to the baseline check-out: %s",
                     blob_str(&cmd));
      }
    }
  }
  blob_reset(&cmd);
  if( db_table_exists("patch","patchmerge") ){
    db_prepare(&q,
      "SELECT type, mhash, upper(type) FROM patch.patchmerge"
      " WHERE type IN ('merge','cherrypick','backout','integrate')"
      "   AND mhash NOT GLOB '*[^a-fA-F0-9]*';"
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zType = db_column_text(&q,0);
      blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
      if( strcmp(zType,"merge")==0 ){
        blob_appendf(&cmd, " merge %s\n", db_column_text(&q,1));
      }else{
        blob_appendf(&cmd, " merge --%s %s\n", zType, db_column_text(&q,1));
      }
      if( mFlags & PATCH_VERBOSE ){
        fossil_print("%-10s %s\n", db_column_text(&q,2),
                    db_column_text(&q,0));
      }
    }
    db_finalize(&q);
    if( mFlags & PATCH_DRYRUN ){
      fossil_print("%s", blob_str(&cmd));
    }else{
      int rc = fossil_unsafe_system(blob_str(&cmd));
      if( rc ){
        fossil_fatal("unable to do merges:\n%s",
                     blob_str(&cmd));
      }
    }
    blob_reset(&cmd);
  }

  /* Deletions */
  db_prepare(&q, "SELECT pathname FROM patch.chng"
                 " WHERE origname IS NULL AND delta IS NULL");
  while( db_step(&q)==SQLITE_ROW ){
    if( blob_size(&cmd)==0 ){
      blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
      blob_appendf(&cmd, " rm --hard");
    }
    blob_appendf(&cmd, " %$", db_column_text(&q,0));
    if( mFlags & PATCH_VERBOSE ){
      fossil_print("%-10s %s\n", "DELETE", db_column_text(&q,0));
    }
  }
  db_finalize(&q);
  if( blob_size(&cmd)>0 ){
    blob_appendf(&cmd, "\n");
    if( mFlags & PATCH_DRYRUN ){
      fossil_print("%s", blob_str(&cmd));
    }else{
      int rc = fossil_unsafe_system(blob_str(&cmd));
      if( rc ){
        fossil_fatal("unable to do merges:\n%s",
                     blob_str(&cmd));
      }
    }
    blob_reset(&cmd);
  }

  /* Renames */
  db_prepare(&q,
    "SELECT origname, pathname FROM patch.chng"
    " WHERE origname IS NOT NULL"
    "   AND origname<>pathname"
  );
  while( db_step(&q)==SQLITE_ROW ){
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    blob_appendf(&cmd, " mv --hard %$ %$\n",
        db_column_text(&q,0), db_column_text(&q,1));
    if( mFlags & PATCH_VERBOSE ){
      fossil_print("%-10s %s -> %s\n", "RENAME",
         db_column_text(&q,0), db_column_text(&q,1));
    }
  }
  db_finalize(&q);
  if( blob_size(&cmd)>0 ){
    if( mFlags & PATCH_DRYRUN ){
      fossil_print("%s", blob_str(&cmd));
    }else{
      int rc = fossil_unsafe_system(blob_str(&cmd));
      if( rc ){
        fossil_print("%-10s unable to rename files:\n%s", "WARNING!",
                       blob_str(&cmd));
      }
    }
    blob_reset(&cmd);
  }

  /* Edits and new files */
  db_prepare(&q,
    "SELECT pathname, hash, isexe, islink, delta FROM patch.chng"
    " WHERE delta IS NOT NULL"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPathname = db_column_text(&q,0);
    const char *zHash = db_column_text(&q,1);
    int isExe = db_column_int(&q,2);
    int isLink = db_column_int(&q,3);
    Blob data;

    blob_init(&data, 0, 0);
    db_ephemeral_blob(&q, 4, &data);
    if( blob_size(&data) ){
      blob_uncompress(&data, &data);
    }
    if( blob_size(&data)==0 ){
      /* No changes to the file */
      continue;
    }else if( zHash ){
      Blob basis;
      int rid = fast_uuid_to_rid(zHash);
      int outSize, sz;
      char *aOut;
      if( rid==0 ){
        fossil_fatal("cannot locate basis artifact %s for %s",
                     zHash, zPathname);
      }
      if( !content_get(rid, &basis) ){
        fossil_fatal("cannot load basis artifact %d for %s", rid, zPathname);
      }
      outSize = delta_output_size(blob_buffer(&data),blob_size(&data));
      if( outSize<=0 ){
        fossil_fatal("malformed delta for %s", zPathname);
      }
      aOut = sqlite3_malloc64( outSize+1 );
      if( aOut==0 ){
        fossil_fatal("out of memory");
      }
      sz = delta_apply(blob_buffer(&basis), blob_size(&basis),
                       blob_buffer(&data), blob_size(&data), aOut);
      if( sz<0 ){
        fossil_fatal("malformed delta for %s", zPathname);
      }
      blob_reset(&basis);
      blob_reset(&data);
      blob_append(&data, aOut, sz);
      sqlite3_free(aOut);
      if( mFlags & PATCH_VERBOSE ){
        fossil_print("%-10s %s\n", "EDIT", zPathname);
      }
    }else{
      blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
      blob_appendf(&cmd, " add %$\n", zPathname);
      if( mFlags & PATCH_VERBOSE ){
        fossil_print("%-10s %s\n", "NEW", zPathname);
      }
    }
    if( (mFlags & PATCH_DRYRUN)==0 ){
      if( isLink ){
        symlink_create(blob_str(&data), zPathname);
      }else{
        blob_write_to_file(&data, zPathname);
      }
      file_setexe(zPathname, isExe);
      blob_reset(&data);
    }
  }
  db_finalize(&q);
  if( blob_size(&cmd)>0 ){
    if( mFlags & PATCH_DRYRUN ){
      fossil_print("%s", blob_str(&cmd));
    }else{
      int rc = fossil_unsafe_system(blob_str(&cmd));
      if( rc ){
        fossil_fatal("unable to add new files:\n%s",
                     blob_str(&cmd));
      }
    }
    blob_reset(&cmd);
  }
}

/*
** This routine processes the
**
**   ...  [--dir64 DIR64] [DIRECTORY] FILENAME
**
** part of various "fossil patch" subcommands.
**
** Find and return the filename of the patch file to be used by
** "fossil patch apply" or "fossil patch create".  Space to hold
** the returned name is obtained from fossil_malloc() and should
** be freed by the caller.
**
** If the name is "-" return NULL.  The caller will interpret this
** to mean the patch is coming in over stdin or going out over
** stdout.
**
** If there is a prior DIRECTORY argument, or if
** the --dir64 option is present, first chdir to the specified
** directory, and adjust the path of FILENAME as appropriate so
** that it still points to the same file.
**
** The --dir64 option is undocumented.  The argument to --dir64
** is a base64-encoded directory name.  The --dir64 option is used
** to transmit the directory as part of the command argument to
** a "ssh" command without having to worry about quoting
** any special characters in the filename.
**
** The returned name is obtained from fossil_malloc() and should
** be freed by the caller.
*/
static char *patch_find_patch_filename(const char *zCmdName){
  const char *zDir64 = find_option("dir64",0,1);
  const char *zDir = 0;
  const char *zBaseName;
  char *zToFree = 0;
  char *zPatchFile = 0;
  if( zDir64 ){
    int n = 0;
    zToFree = decode64(zDir64, &n);
    zDir = zToFree;
  }
  verify_all_options();
  if( g.argc!=4 && g.argc!=5 ){
    usage(mprintf("%s [DIRECTORY] FILENAME", zCmdName));
  }
  if( g.argc==5 ){
    zDir = g.argv[3];
    zBaseName = g.argv[4];
  }else{
    zBaseName = g.argv[3];
  }
  if( fossil_strcmp(zBaseName, "-")==0 ){
    zPatchFile = 0;
  }else if( zDir ){
    zPatchFile = file_canonical_name_dup(g.argv[4]);
  }else{
    zPatchFile = fossil_strdup(g.argv[3]);
  }
  if( zDir && file_chdir(zDir,0) ){
    fossil_fatal("cannot change to directory \"%s\"", zDir);
  }
  fossil_free(zToFree);
  return zPatchFile;
}

/*
** Create a FILE* that will execute the remote side of a push or pull
** using ssh (probably) or fossil for local pushes and pulls.  Return
** a FILE* obtained from popen() into which we write the patch, or from
** which we read the patch, depending on whether this is a push or pull.
*/
static FILE *patch_remote_command(
  unsigned mFlags,             /* flags */
  const char *zThisCmd,        /* "push" or "pull" */
  const char *zRemoteCmd,      /* "apply" or "create" */
  const char *zFossilCmd,      /* Name of "fossil" on remote system */
  const char *zRW              /* "w" or "r" */
){
  char *zRemote = 0;
  char *zDir = 0;
  Blob cmd;
  FILE *f = 0;
  Blob flgs;
  char *zForce = 0;
  int isRetry = (mFlags & PATCH_RETRY)!=0;

  blob_init(&flgs, 0, 0);
  blob_init(&cmd, 0, 0);
  if( mFlags & PATCH_FORCE )  blob_appendf(&flgs, " -f");
  if( mFlags & PATCH_VERBOSE )  blob_appendf(&flgs, " -v");
  if( mFlags & PATCH_DRYRUN )  blob_appendf(&flgs, " -n");
  zForce = blob_size(&flgs)>0 ? blob_str(&flgs) : "";
  if( g.argc!=4 ){
    usage(mprintf("%s [USER@]HOST:DIRECTORY", zThisCmd));
  }
  zRemote = fossil_strdup(g.argv[3]);
  zDir = (char*)file_skip_userhost(zRemote);
  if( zDir==0 ){
    if( isRetry ) goto remote_command_error;
    zDir = zRemote;
    blob_append_escaped_arg(&cmd, g.nameOfExe, 1);
    blob_appendf(&cmd, " patch %s%s %$ -", zRemoteCmd, zForce, zDir);
  }else{
    Blob remote;
    *(char*)(zDir-1) = 0;
    transport_ssh_command(&cmd);
    blob_appendf(&cmd, " -T");
    blob_append_escaped_arg(&cmd, zRemote, 0);
    blob_init(&remote, 0, 0);
    if( zFossilCmd==0 ){
      if( ssh_needs_path_argument(zRemote,-1) ^ isRetry ){
        ssh_add_path_argument(&cmd);
      }
      zFossilCmd = "fossil";
    }else if( mFlags & PATCH_RETRY ){
      goto remote_command_error;
    }
    blob_appendf(&remote, "%$ patch %s%s --dir64 %z -",
                 zFossilCmd, zRemoteCmd, zForce, encode64(zDir, -1));
    blob_append_escaped_arg(&cmd, blob_str(&remote), 0);
    blob_reset(&remote);
  }
  if( isRetry ){
    fossil_print("First attempt to run \"fossil\" on %s failed\n"
                 "Retry: ", zRemote);
  }
  fossil_print("%s\n", blob_str(&cmd));
  fflush(stdout);
  f = popen(blob_str(&cmd), zRW);
  if( f==0 ){
    fossil_fatal("cannot run command: %s", blob_str(&cmd));
  }
remote_command_error:
  fossil_free(zRemote);
  blob_reset(&cmd);
  blob_reset(&flgs);
  return f;
}

/*
** Toggle the use-path-for-ssh setting for the remote host defined
** by g.argv[3].
*/
static void patch_toggle_ssh_needs_path(void){
  char *zRemote = fossil_strdup(g.argv[3]);
  char *zDir = (char*)file_skip_userhost(zRemote);
  if( zDir ){
    *(char*)(zDir - 1) =  0;
    ssh_needs_path_argument(zRemote, 99);
  }
  fossil_free(zRemote);
}

/*
** Show a diff for the patch currently loaded into database "patch".
*/
static void patch_diff(
  unsigned mFlags,         /* Patch flags.  only -f is allowed */
  DiffConfig *pCfg         /* Diff options */
){
  int nErr = 0;
  Stmt q;
  int bWebpage = (pCfg->diffFlags & DIFF_WEBPAGE)!=0;
  Blob empty;
  blob_zero(&empty);

  if( (mFlags & PATCH_FORCE)==0 ){
    /* Check to ensure that the patch is against the repository that
    ** we have opened.
    **
    ** To do: If there is a mismatch, should we scan all of the repositories
    ** listed in the global_config table looking for a match?
    */
    if( db_exists(
        "SELECT 1 FROM patch.cfg"
        " WHERE cfg.key='baseline'"
        "   AND NOT EXISTS(SELECT 1 FROM blob WHERE uuid=cfg.value)"
    )){
      char *zBaseline;
      db_prepare(&q,
         "SELECT config.value, cfg.value FROM config, cfg"
         " WHERE config.name='project-name'"
         "   AND cfg.key='project-name'"
         "   AND config.value<>cfg.value"
      );
      if( db_step(&q)==SQLITE_ROW ){
        char *zRepo = fossil_strdup(db_column_text(&q,0));
        char *zPatch = fossil_strdup(db_column_text(&q,1));
        db_finalize(&q);
        fossil_fatal("the patch is against project \"%z\" but you are using "
                     "project \"%z\"", zPatch, zRepo);
      }
      db_finalize(&q);
      zBaseline = db_text(0, "SELECT value FROM patch.cfg"
                             " WHERE key='baseline'");
      if( zBaseline ){
        fossil_fatal("the baseline of the patch (check-in %S) is not found "
                     "in the %s repository", zBaseline, g.zRepositoryName);
      }
    }
  }

  diff_begin(pCfg);
  db_prepare(&q,
     "SELECT"
       " (SELECT blob.rid FROM blob WHERE blob.uuid=chng.hash),"
       " pathname,"    /* 1: new pathname */
       " origname,"    /* 2: original pathname.  Null if not renamed */
       " delta,"       /* 3: delta.  NULL if deleted.  empty is no change */
       " hash"         /* 4: baseline hash */
     " FROM patch.chng"
     " ORDER BY pathname"
  );
  while( db_step(&q)==SQLITE_ROW ){
    int rid;
    const char *zName;
    Blob a, b;

    if( db_column_type(&q,0)!=SQLITE_INTEGER
     && db_column_type(&q,4)==SQLITE_TEXT
    ){
      char *zUuid = fossil_strdup(db_column_text(&q,4));
      char *zName = fossil_strdup(db_column_text(&q,1));
      if( mFlags & PATCH_FORCE ){
        fossil_print("ERROR cannot find base artifact %S for file \"%s\"\n",
                     zUuid, zName);
        nErr++;
        fossil_free(zUuid);
        fossil_free(zName);
        continue;
      }else{
        db_finalize(&q);
        fossil_fatal("base artifact %S for file \"%s\" not found",
                     zUuid, zName);
      }
    }
    zName = db_column_text(&q, 1);
    rid = db_column_int(&q, 0);

    pCfg->diffFlags &= (~DIFF_FILE_MASK);
    if( db_column_type(&q,3)==SQLITE_NULL ){
      if( !bWebpage ) fossil_print("DELETE %s\n", zName);
      pCfg->diffFlags |= DIFF_FILE_DELETED;
      diff_print_index(zName, pCfg, 0);
      content_get(rid, &a);
      diff_file_mem(&a, &empty, zName, pCfg);
    }else if( rid==0 ){
      db_ephemeral_blob(&q, 3, &a);
      blob_uncompress(&a, &a);
      if( !bWebpage ) fossil_print("ADDED %s\n", zName);
      pCfg->diffFlags |= DIFF_FILE_ADDED;
      diff_print_index(zName, pCfg, 0);
      diff_file_mem(&empty, &a, zName, pCfg);
      blob_reset(&a);
    }else if( db_column_bytes(&q, 3)>0 ){
      Blob delta;
      db_ephemeral_blob(&q, 3, &delta);
      blob_uncompress(&delta, &delta);
      content_get(rid, &a);
      blob_delta_apply(&a, &delta, &b);
      diff_file_mem(&a, &b, zName, pCfg);
      blob_reset(&a);
      blob_reset(&b);
      blob_reset(&delta);
    }
  }
  db_finalize(&q);
  diff_end(pCfg, nErr);
  if( nErr ) fossil_fatal("abort due to prior errors");
}


/*
** COMMAND: patch
**
** Usage: %fossil patch SUBCOMMAND ?ARGS ..?
**
** This command is used to create, view, and apply Fossil binary patches.
** A Fossil binary patch is a single (binary) file that captures all of the
** uncommitted changes of a check-out.  Use Fossil binary patches to transfer
** proposed or incomplete changes between machines for testing or analysis.
**
** > fossil patch create [DIRECTORY] PATCHFILE
**
**       Create a new binary patch in PATCHFILE that captures all uncommitted
**       changes in the check-out at DIRECTORY, or the current directory if
**       DIRECTORY is omitted.  If PATCHFILE is "-" then the binary patch
**       is written to standard output.
**
**       Options:
**           -f|--force     Overwrite an existing patch with the same name
**
** > fossil patch apply [DIRECTORY] PATCHFILE
**
**       Apply the changes in PATCHFILE to the check-out at DIRECTORY, or
**       in the current directory if DIRECTORY is omitted.
**
**       Options:
**           -f|--force     Apply the patch even though there are unsaved
**                          changes in the current check-out.  Unsaved changes
**                          are reverted and permanently lost.
**           -n|--dry-run   Do nothing, but print what would have happened
**           -v|--verbose   Extra output explaining what happens
**
** > fossil patch diff [DIRECTORY] PATCHFILE
** > fossil patch gdiff [DIRECTORY] PATCHFILE
**
**       Show a human-readable diff for the patch in PATCHFILE and associated
**       with the repository checked out in DIRECTORY.  The current
**       directory is used if DIRECTORY is omitted. All the usual
**       diff flags described at "fossil help diff" apply. With gdiff,
**       gdiff-command is used instead of internal diff logic.  In addition:
**
**           -f|--force     Continue trying to perform the diff even if
**                          baseline information is missing from the current
**                          repository
**
** > fossil patch push REMOTE-CHECKOUT
**
**       Create a patch for the current check-out, transfer that patch to
**       a remote machine (using ssh) and apply the patch there.  The
**       REMOTE-CHECKOUT is in one of the following formats:
**
**           *   DIRECTORY
**           *   HOST:DIRECTORY
**           *   USER@HOST:DIRECTORY
**
**       The name of the fossil executable on the remote host is specified
**       by the --fossilcmd option, or if there is no --fossilcmd, it first
**       tries "$HOME/bin/fossil" and if not found there it searches for any
**       executable named "fossil" on the default $PATH set by SSH on the
**       remote.
**
**       Command-line options:
**
**           -f|--force         Apply the patch even though there are unsaved
**                              changes in the current check-out.  Unsaved
**                              changes will be reverted and then the patch is
**                              applied.
**           --fossilcmd EXE    Name of the "fossil" executable on the remote
**           -n|--dry-run       Do nothing, but print what would have happened
**           -v|--verbose       Extra output explaining what happens
**
**
** > fossil patch pull REMOTE-CHECKOUT
**
**       Like "fossil patch push" except that the transfer is from remote
**       to local.  All the same command-line options apply.
**
** > fossil patch view PATCHFILE
**
**       View a summary of the changes in the binary patch in PATCHFILE.
**       Use "fossil patch diff" for detailed patch content.
**
**           -v|--verbose       Show extra detail about the patch
**
*/
void patch_cmd(void){
  const char *zCmd;
  size_t n;
  if( g.argc<3 ){
    patch_usage:
    usage("apply|create|diff|gdiff|pull|push|view");
  }
  zCmd = g.argv[2];
  n = strlen(zCmd);
  if( strncmp(zCmd, "apply", n)==0 ){
    char *zIn;
    unsigned flags = 0;
    if( find_option("dry-run","n",0) )  flags |= PATCH_DRYRUN;
    if( find_option("verbose","v",0) )  flags |= PATCH_VERBOSE;
    if( find_option("force","f",0) )    flags |= PATCH_FORCE;
    zIn = patch_find_patch_filename("apply");
    db_must_be_within_tree();
    patch_attach(zIn, stdin, 0);
    patch_apply(flags);
    fossil_free(zIn);
  }else
  if( strncmp(zCmd, "create", n)==0 ){
    char *zOut;
    unsigned flags = 0;
    if( find_option("force","f",0) )    flags |= PATCH_FORCE;
    zOut = patch_find_patch_filename("create");
    verify_all_options();
    db_must_be_within_tree();
    patch_create(flags, zOut, stdout);
    fossil_free(zOut);
  }else
  if( (strncmp(zCmd, "diff", n)==0) || (strncmp(zCmd, "gdiff", n)==0) ){
    char *zIn;
    unsigned flags = 0;
    DiffConfig DCfg;

    if( find_option("tk",0,0)!=0 ){
      db_close(0);
      diff_tk("patch diff", 3);
      return;
    }
    db_find_and_open_repository(0, 0);
    if( find_option("force","f",0) )    flags |= PATCH_FORCE;
    diff_options(&DCfg, zCmd[0]=='g', 0);
    verify_all_options();
    zIn = patch_find_patch_filename("apply");
    patch_attach(zIn, stdin, 0);
    patch_diff(flags, &DCfg);
    fossil_free(zIn);
  }else
  if( strncmp(zCmd, "pull", n)==0 ){
    FILE *pIn = 0;
    unsigned flags = 0;
    const char *zFossilCmd = find_option("fossilcmd",0,1);
    if( find_option("dry-run","n",0) )  flags |= PATCH_DRYRUN;
    if( find_option("verbose","v",0) )  flags |= PATCH_VERBOSE;
    if( find_option("force","f",0) )    flags |= PATCH_FORCE;
    db_must_be_within_tree();
    verify_all_options();
    pIn = patch_remote_command(flags & (~PATCH_FORCE),
                 "pull", "create", zFossilCmd, "r");
    if( pIn ){
      patch_attach(0, pIn, 1);
      if( pclose(pIn) ){
        flags |= PATCH_RETRY;
        pIn = patch_remote_command(flags & (~PATCH_FORCE),
                     "pull", "create", zFossilCmd, "r");
        if( pIn ){
          patch_attach(0, pIn, 0);
          if( pclose(pIn)==0 ){
            patch_toggle_ssh_needs_path();
          }
        }
      }
      patch_apply(flags);
    }
  }else
  if( strncmp(zCmd, "push", n)==0 ){
    FILE *pOut = 0;
    unsigned flags = 0;
    const char *zFossilCmd = find_option("fossilcmd",0,1);
    if( find_option("dry-run","n",0) )  flags |= PATCH_DRYRUN;
    if( find_option("verbose","v",0) )  flags |= PATCH_VERBOSE;
    if( find_option("force","f",0) )    flags |= PATCH_FORCE;
    db_must_be_within_tree();
    verify_all_options();
    pOut = patch_remote_command(flags, "push", "apply", zFossilCmd, "w");
    if( pOut ){
      patch_create(0, 0, pOut);
      if( pclose(pOut)!=0 ){
        flags |= PATCH_RETRY;
        pOut = patch_remote_command(flags, "push", "apply", zFossilCmd, "w");
        if( pOut ){
          patch_create(0, 0, pOut);
          if( pclose(pOut)==0 ){
            patch_toggle_ssh_needs_path();
          }
        }
      }
    }
  }else
  if( strncmp(zCmd, "view", n)==0 ){
    const char *zIn;
    unsigned int flags = 0;
    if( find_option("verbose","v",0) )  flags |= PATCH_VERBOSE;
    verify_all_options();
    if( g.argc!=4 ){
      usage("view FILENAME");
    }
    zIn = g.argv[3];
    if( fossil_strcmp(zIn, "-")==0 ) zIn = 0;
    patch_attach(zIn, stdin, 0);
    patch_view(flags);
  }else
  {
    goto patch_usage;
  }
}
Added src/path.c.



































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to trace paths of through the
** directed acyclic graph (DAG) of check-ins.
*/
#include "config.h"
#include "path.h"
#include <assert.h>

#if INTERFACE
/* Nodes for the paths through the DAG.
*/
struct PathNode {
  int rid;                 /* ID for this node */
  u8 fromIsParent;         /* True if pFrom is the parent of rid */
  u8 isPrim;               /* True if primary side of common ancestor */
  u8 isHidden;             /* Abbreviate output in "fossil bisect ls" */
  PathNode *pFrom;         /* Node we came from */
  union {
    PathNode *pPeer;       /* List of nodes of the same generation */
    PathNode *pTo;         /* Next on path from beginning to end */
  } u;
  PathNode *pAll;        /* List of all nodes */
};
#endif

/*
** Local variables for this module
*/
static struct {
  PathNode *pCurrent;   /* Current generation of nodes */
  PathNode *pAll;       /* All nodes */
  Bag seen;             /* Nodes seen before */
  int nStep;            /* Number of steps from first to last */
  int nNotHidden;       /* Number of steps not counting hidden nodes */
  PathNode *pStart;     /* Earliest node */
  PathNode *pEnd;       /* Most recent */
} path;

/*
** Return the first (last) element of the computed path.
*/
PathNode *path_first(void){ return path.pStart; }
PathNode *path_last(void){ return path.pEnd; }

/*
** Return the number of steps in the computed path.
*/
int path_length(void){ return path.nStep; }

/*
** Return the number of non-hidden steps in the computed path.
*/
int path_length_not_hidden(void){ return path.nNotHidden; }

/*
** Create a new node
*/
static PathNode *path_new_node(int rid, PathNode *pFrom, int isParent){
  PathNode *p;

  p = fossil_malloc( sizeof(*p) );
  memset(p, 0, sizeof(*p));
  p->rid = rid;
  p->fromIsParent = isParent;
  p->pFrom = pFrom;
  p->u.pPeer = path.pCurrent;
  path.pCurrent = p;
  p->pAll = path.pAll;
  path.pAll = p;
  bag_insert(&path.seen, rid);
  return p;
}

/*
** Reset memory used by the shortest path algorithm.
*/
void path_reset(void){
  PathNode *p;
  while( path.pAll ){
    p = path.pAll;
    path.pAll = p->pAll;
    fossil_free(p);
  }
  bag_clear(&path.seen);
  memset(&path, 0, sizeof(path));
}

/*
** Construct the path from path.pStart to path.pEnd in the u.pTo fields.
*/
static void path_reverse_path(void){
  PathNode *p;
  assert( path.pEnd!=0 );
  for(p=path.pEnd; p && p->pFrom; p = p->pFrom){
    p->pFrom->u.pTo = p;
  }
  path.pEnd->u.pTo = 0;
  assert( p==path.pStart );
}

/*
** Compute the shortest path from iFrom to iTo
**
** If directOnly is true, then use only the "primary" links from parent to
** child.  In other words, ignore merges.
**
** Return a pointer to the beginning of the path (the iFrom node).
** Elements of the path can be traversed by following the PathNode.u.pTo
** pointer chain.
**
** Return NULL if no path is found.
*/
PathNode *path_shortest(
  int iFrom,          /* Path starts here */
  int iTo,            /* Path ends here */
  int directOnly,     /* No merge links if true */
  int oneWayOnly,     /* Parent->child only if true */
  Bag *pHidden        /* Hidden nodes */
){
  Stmt s;
  PathNode *pPrev;
  PathNode *p;

  path_reset();
  path.pStart = path_new_node(iFrom, 0, 0);
  if( iTo==iFrom ){
    path.pEnd = path.pStart;
    return path.pStart;
  }
  if( oneWayOnly && directOnly ){
    db_prepare(&s,
        "SELECT cid, 1 FROM plink WHERE pid=:pid AND isprim"
    );
  }else if( oneWayOnly ){
    db_prepare(&s,
        "SELECT cid, 1 FROM plink WHERE pid=:pid "
    );
  }else if( directOnly ){
    db_prepare(&s,
        "SELECT cid, 1 FROM plink WHERE pid=:pid AND isprim "
        "UNION ALL "
        "SELECT pid, 0 FROM plink WHERE cid=:pid AND isprim"
    );
  }else{
    db_prepare(&s,
        "SELECT cid, 1 FROM plink WHERE pid=:pid "
        "UNION ALL "
        "SELECT pid, 0 FROM plink WHERE cid=:pid"
    );
  }
  while( path.pCurrent ){
    path.nStep++;
    pPrev = path.pCurrent;
    path.pCurrent = 0;
    while( pPrev ){
      db_bind_int(&s, ":pid", pPrev->rid);
      while( db_step(&s)==SQLITE_ROW ){
        int cid = db_column_int(&s, 0);
        int isParent = db_column_int(&s, 1);
        if( bag_find(&path.seen, cid) ) continue;
        p = path_new_node(cid, pPrev, isParent);
        if( pHidden && bag_find(pHidden,cid) ) p->isHidden = 1;
        if( cid==iTo ){
          db_finalize(&s);
          path.pEnd = p;
          path_reverse_path();
          for(p=path.pStart->u.pTo; p; p=p->u.pTo ){
            if( !p->isHidden ) path.nNotHidden++;
          }
          return path.pStart;
        }
      }
      db_reset(&s);
      pPrev = pPrev->u.pPeer;
    }
  }
  db_finalize(&s);
  path_reset();
  return 0;
}

/*
** Find the mid-point of the path.  If the path contains fewer than
** 2 steps, return 0.
*/
PathNode *path_midpoint(void){
  PathNode *p;
  int i;
  if( path.nNotHidden<2 ) return 0;
  for(p=path.pEnd, i=0; p && (p->isHidden || i<path.nNotHidden/2); p=p->pFrom){
    if( !p->isHidden ) i++;
  }
  return p;
}

/*
** Find the next most recent node on a path.
*/
PathNode *path_next(void){
  PathNode *p;
  p = path.pStart;
  if( p ) p = p->u.pTo;
  return p;
}

/*
** Return an estimate of the number of comparisons remaining in order
** to bisect path.  This is based on the log2() of path.nStep.
*/
int path_search_depth(void){
  int i, j;
  for(i=0, j=1; j<path.nNotHidden; i++, j+=j){}
  return i;
}

/*
** Compute the shortest path between two check-ins and then transfer
** that path into the "ancestor" table.  This is a utility used by
** both /annotate and /finfo.  See also: compute_direct_ancestors().
*/
void path_shortest_stored_in_ancestor_table(
  int origid,     /* RID for check-in at start of the path */
  int cid         /* RID for check-in at the end of the path */
){
  PathNode *pPath;
  int gen = 0;
  Stmt ins;
  pPath = path_shortest(cid, origid, 1, 0, 0);
  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS ancestor("
    "  rid INT UNIQUE,"
    "  generation INTEGER PRIMARY KEY"
    ");"
    "DELETE FROM ancestor;"
  );
  db_prepare(&ins, "INSERT INTO ancestor(rid, generation) VALUES(:rid,:gen)");
  while( pPath ){
    db_bind_int(&ins, ":rid", pPath->rid);
    db_bind_int(&ins, ":gen", ++gen);
    db_step(&ins);
    db_reset(&ins);
    pPath = pPath->u.pTo;
  }
  db_finalize(&ins);
  path_reset();
}

/*
** COMMAND: test-shortest-path
**
** Usage: %fossil test-shortest-path ?--no-merge? VERSION1 VERSION2
**
** Report the shortest path between two check-ins.  If the --no-merge flag
** is used, follow only direct parent-child paths and omit merge links.
*/
void shortest_path_test_cmd(void){
  int iFrom;
  int iTo;
  PathNode *p;
  int n;
  int directOnly;
  int oneWay;

  db_find_and_open_repository(0,0);
  directOnly = find_option("no-merge",0,0)!=0;
  oneWay = find_option("one-way",0,0)!=0;
  if( g.argc!=4 ) usage("VERSION1 VERSION2");
  iFrom = name_to_rid(g.argv[2]);
  iTo = name_to_rid(g.argv[3]);
  p = path_shortest(iFrom, iTo, directOnly, oneWay, 0);
  if( p==0 ){
    fossil_fatal("no path from %s to %s", g.argv[1], g.argv[2]);
  }
  for(n=1, p=path.pStart; p; p=p->u.pTo, n++){
    char *z;
    z = db_text(0,
      "SELECT substr(uuid,1,12) || ' ' || datetime(mtime)"
      "  FROM blob, event"
      " WHERE blob.rid=%d AND event.objid=%d AND event.type='ci'",
      p->rid, p->rid);
    fossil_print("%4d: %5d %s", n, p->rid, z);
    fossil_free(z);
    if( p->u.pTo ){
      fossil_print(" is a %s of\n",
                   p->u.pTo->fromIsParent ? "parent" : "child");
    }else{
      fossil_print("\n");
    }
  }
}

/*
** Find the closest common ancestor of two nodes.  "Closest" means the
** fewest number of arcs.
*/
int path_common_ancestor(int iMe, int iYou){
  Stmt s;
  PathNode *pPrev;
  PathNode *p;
  Bag me, you;

  if( iMe==iYou ) return iMe;
  if( iMe==0 || iYou==0 ) return 0;
  path_reset();
  path.pStart = path_new_node(iMe, 0, 0);
  path.pStart->isPrim = 1;
  path.pEnd = path_new_node(iYou, 0, 0);
  db_prepare(&s, "SELECT pid FROM plink WHERE cid=:cid");
  bag_init(&me);
  bag_insert(&me, iMe);
  bag_init(&you);
  bag_insert(&you, iYou);
  while( path.pCurrent ){
    pPrev = path.pCurrent;
    path.pCurrent = 0;
    while( pPrev ){
      db_bind_int(&s, ":cid", pPrev->rid);
      while( db_step(&s)==SQLITE_ROW ){
        int pid = db_column_int(&s, 0);
        if( bag_find(pPrev->isPrim ? &you : &me, pid) ){
          /* pid is the common ancestor */
          PathNode *pNext;
          for(p=path.pAll; p && p->rid!=pid; p=p->pAll){}
          assert( p!=0 );
          pNext = p;
          while( pNext ){
            pNext = p->pFrom;
            p->pFrom = pPrev;
            pPrev = p;
            p = pNext;
          }
          if( pPrev==path.pStart ) path.pStart = path.pEnd;
          path.pEnd = pPrev;
          path_reverse_path();
          db_finalize(&s);
          return pid;
        }else if( bag_find(&path.seen, pid) ){
          /* pid is just an alternative path on one of the legs */
          continue;
        }
        p = path_new_node(pid, pPrev, 0);
        p->isPrim = pPrev->isPrim;
        bag_insert(pPrev->isPrim ? &me : &you, pid);
      }
      db_reset(&s);
      pPrev = pPrev->u.pPeer;
    }
  }
  db_finalize(&s);
  path_reset();
  return 0;
}

/*
** COMMAND: test-ancestor-path
**
** Usage: %fossil test-ancestor-path VERSION1 VERSION2
**
** Report the path from VERSION1 to VERSION2 through their most recent
** common ancestor.
*/
void ancestor_path_test_cmd(void){
  int iFrom;
  int iTo;
  int iPivot;
  PathNode *p;
  int n;

  db_find_and_open_repository(0,0);
  if( g.argc!=4 ) usage("VERSION1 VERSION2");
  iFrom = name_to_rid(g.argv[2]);
  iTo = name_to_rid(g.argv[3]);
  iPivot = path_common_ancestor(iFrom, iTo);
  for(n=1, p=path.pStart; p; p=p->u.pTo, n++){
    char *z;
    z = db_text(0,
      "SELECT substr(uuid,1,12) || ' ' || datetime(mtime)"
      "  FROM blob, event"
      " WHERE blob.rid=%d AND event.objid=%d AND event.type='ci'",
      p->rid, p->rid);
    fossil_print("%4d: %5d %s", n, p->rid, z);
    fossil_free(z);
    if( p->rid==iFrom ) fossil_print(" VERSION1");
    if( p->rid==iTo ) fossil_print(" VERSION2");
    if( p->rid==iPivot ) fossil_print(" PIVOT");
    fossil_print("\n");
  }
}


/*
** A record of a file rename operation.
*/
typedef struct NameChange NameChange;
struct NameChange {
  int origName;        /* Original name of file */
  int curName;         /* Current name of the file */
  int newName;         /* Name of file in next version */
  NameChange *pNext;   /* List of all name changes */
};

/*
** Compute all file name changes that occur going from check-in iFrom
** to check-in iTo.
**
** The number of name changes is written into *pnChng.  For each name
** change, two integers are allocated for *piChng.  The first is the
** filename.fnid for the original name as seen in check-in iFrom and
** the second is for new name as it is used in check-in iTo.
**
** Space to hold *piChng is obtained from fossil_malloc() and should
** be released by the caller.
**
** This routine really has nothing to do with path.  It is located
** in this path.c module in order to leverage some of the path
** infrastructure.
*/
void find_filename_changes(
  int iFrom,               /* Ancestor check-in */
  int iTo,                 /* Recent check-in */
  int revOK,               /* OK to move backwards (child->parent) if true */
  int *pnChng,             /* Number of name changes along the path */
  int **aiChng,            /* Name changes */
  const char *zDebug       /* Generate trace output if no NULL */
){
  PathNode *p;             /* For looping over path from iFrom to iTo */
  NameChange *pAll = 0;    /* List of all name changes seen so far */
  NameChange *pChng;       /* For looping through the name change list */
  int nChng = 0;           /* Number of files whose names have changed */
  int *aChng;              /* Two integers per name change */
  int i;                   /* Loop counter */
  Stmt q1;                 /* Query of name changes */

  *pnChng = 0;
  *aiChng = 0;
  if(0==iFrom){
    fossil_fatal("Invalid 'from' RID: 0");
  }else if(0==iTo){
    fossil_fatal("Invalid 'to' RID: 0");
  }
  if( iFrom==iTo ) return;
  path_reset();
  p = path_shortest(iFrom, iTo, 1, revOK==0, 0);
  if( p==0 ) return;
  path_reverse_path();
  db_prepare(&q1,
     "SELECT pfnid, fnid FROM mlink"
     " WHERE mid=:mid AND (pfnid>0 OR fid==0)"
     " ORDER BY pfnid"
  );
  for(p=path.pStart; p; p=p->u.pTo){
    int fnid, pfnid;
    if( !p->fromIsParent && (p->u.pTo==0 || p->u.pTo->fromIsParent) ){
      /* Skip nodes where the parent is not on the path */
      continue;
    }
    db_bind_int(&q1, ":mid", p->rid);
    if( zDebug ){
      fossil_print("%s check-in %.16z %z rid %d\n",
         zDebug,
         db_text(0, "SELECT uuid FROM blob WHERE rid=%d", p->rid),
         db_text(0, "SELECT date(mtime) FROM event WHERE objid=%d", p->rid),
         p->rid
      );
    }
    while( db_step(&q1)==SQLITE_ROW ){
      fnid = db_column_int(&q1, 1);
      pfnid = db_column_int(&q1, 0);
      if( pfnid==0 ){
        pfnid = fnid;
        fnid = 0;
      }
      if( !p->fromIsParent ){
        int t = fnid;
        fnid = pfnid;
        pfnid = t;
      }
      if( zDebug ){
        fossil_print("%s %d[%z] -> %d[%z]\n",
           zDebug,
           pfnid,
           db_text(0, "SELECT name FROM filename WHERE fnid=%d", pfnid),
           fnid,
           db_text(0, "SELECT name FROM filename WHERE fnid=%d", fnid));
      }
      for(pChng=pAll; pChng; pChng=pChng->pNext){
        if( pChng->curName==pfnid ){
          pChng->newName = fnid;
          break;
        }
      }
      if( pChng==0 && fnid>0 ){
        pChng = fossil_malloc( sizeof(*pChng) );
        pChng->pNext = pAll;
        pAll = pChng;
        pChng->origName = pfnid;
        pChng->curName = pfnid;
        pChng->newName = fnid;
        nChng++;
      }
    }
    for(pChng=pAll; pChng; pChng=pChng->pNext){
      pChng->curName = pChng->newName;
    }
    db_reset(&q1);
  }
  db_finalize(&q1);
  if( nChng ){
    aChng = *aiChng = fossil_malloc( nChng*2*sizeof(int) );
    for(pChng=pAll, i=0; pChng; pChng=pChng->pNext){
      if( pChng->newName==0 ) continue;
      if( pChng->origName==0 ) continue;
      aChng[i] = pChng->origName;
      aChng[i+1] = pChng->newName;
      if( zDebug ){
        fossil_print("%s summary %d[%z] -> %d[%z]\n",
           zDebug,
           aChng[i],
           db_text(0, "SELECT name FROM filename WHERE fnid=%d", aChng[i]),
           aChng[i+1],
           db_text(0, "SELECT name FROM filename WHERE fnid=%d", aChng[i+1]));
      }
      i += 2;
    }
    *pnChng = i/2;
    while( pAll ){
      pChng = pAll;
      pAll = pAll->pNext;
      fossil_free(pChng);
    }
  }
}

/*
** COMMAND: test-name-changes
**
** Usage: %fossil test-name-changes [--debug] VERSION1 VERSION2
**
** Show all filename changes that occur going from VERSION1 to VERSION2
*/
void test_name_change(void){
  int iFrom;
  int iTo;
  int *aChng;
  int nChng;
  int i;
  const char *zDebug = 0;
  int revOK = 0;

  db_find_and_open_repository(0,0);
  zDebug = find_option("debug",0,0)!=0 ? "debug" : 0;
  revOK = find_option("bidirectional",0,0)!=0;
  if( g.argc<4 ) usage("VERSION1 VERSION2");
  while( g.argc>=4 ){
    iFrom = name_to_rid(g.argv[2]);
    iTo = name_to_rid(g.argv[3]);
    find_filename_changes(iFrom, iTo, revOK, &nChng, &aChng, zDebug);
    fossil_print("------ Changes for (%d) %s -> (%d) %s\n",
                 iFrom, g.argv[2], iTo, g.argv[3]);
    for(i=0; i<nChng; i++){
      char *zFrom, *zTo;

      zFrom = db_text(0, "SELECT name FROM filename WHERE fnid=%d", aChng[i*2]);
      zTo = db_text(0, "SELECT name FROM filename WHERE fnid=%d", aChng[i*2+1]);
      fossil_print("[%s] -> [%s]\n", zFrom, zTo);
      fossil_free(zFrom);
      fossil_free(zTo);
    }
    fossil_free(aChng);
    g.argv += 2;
    g.argc -= 2;
  }
}

/* Query to extract all rename operations */
static const char zRenameQuery[] =
@ CREATE TEMP TABLE renames AS
@ SELECT
@     datetime(event.mtime) AS date,
@     F.name AS old_name,
@     T.name AS new_name,
@     blob.uuid AS checkin
@   FROM mlink, filename F, filename T, event, blob
@  WHERE coalesce(mlink.pfnid,0)!=0 AND mlink.pfnid!=mlink.fnid
@    AND F.fnid=mlink.pfnid
@    AND T.fnid=mlink.fnid
@    AND event.objid=mlink.mid
@    AND event.type='ci'
@    AND blob.rid=mlink.mid;
;

/* Query to extract distinct rename operations */
static const char zDistinctRenameQuery[] =
@ CREATE TEMP TABLE renames AS
@ SELECT
@     min(datetime(event.mtime)) AS date,
@     F.name AS old_name,
@     T.name AS new_name,
@     blob.uuid AS checkin
@   FROM mlink, filename F, filename T, event, blob
@  WHERE coalesce(mlink.pfnid,0)!=0 AND mlink.pfnid!=mlink.fnid
@    AND F.fnid=mlink.pfnid
@    AND T.fnid=mlink.fnid
@    AND event.objid=mlink.mid
@    AND event.type='ci'
@    AND blob.rid=mlink.mid
@  GROUP BY 2, 3;
;

/*
** WEBPAGE: test-rename-list
**
** Print a list of all file rename operations throughout history.
** This page is intended for testing purposes only and may change
** or be discontinued without notice.
*/
void test_rename_list_page(void){
  Stmt q;
  int nRename;
  int nCheckin;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  style_set_current_feature("test");
  if( P("all")!=0 ){
    style_header("List Of All Filename Changes");
    db_multi_exec("%s", zRenameQuery/*safe-for-%s*/);
    style_submenu_element("Distinct", "%R/test-rename-list");
  }else{
    style_header("List Of Distinct Filename Changes");
    db_multi_exec("%s", zDistinctRenameQuery/*safe-for-%s*/);
    style_submenu_element("All", "%R/test-rename-list?all");
  }
  nRename = db_int(0, "SELECT count(*) FROM renames;");
  nCheckin = db_int(0, "SELECT count(DISTINCT checkin) FROM renames;");
  db_prepare(&q, "SELECT date, old_name, new_name, checkin FROM renames"
                 " ORDER BY date DESC, old_name ASC");
  @ <h1>%d(nRename) filename changes in %d(nCheckin) check-ins</h1>
  @ <table class='sortable' data-column-types='tttt' data-init-sort='1'\
  @  border="1" cellpadding="2" cellspacing="0">
  @ <thead><tr><th>Date &amp; Time</th>
  @ <th>Old Name</th>
  @ <th>New Name</th>
  @ <th>Check-in</th></tr></thead><tbody>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zOld = db_column_text(&q, 1);
    const char *zNew = db_column_text(&q, 2);
    const char *zUuid = db_column_text(&q, 3);
    @ <tr>
    @ <td>%z(href("%R/timeline?c=%t",zDate))%s(zDate)</a></td>
    @ <td>%z(href("%R/finfo?name=%t",zOld))%h(zOld)</a></td>
    @ <td>%z(href("%R/finfo?name=%t",zNew))%h(zNew)</a></td>
    @ <td>%z(href("%R/info/%!S",zUuid))%S(zUuid)</a></td></tr>
  }
  @ </tbody></table>
  db_finalize(&q);
  style_table_sorter();
  style_finish_page();
}
Added src/piechart.c.















































































































































































































































































































































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/*
** Copyright (c) 2015 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code for generating pie charts on web pages.
**
*/
#include "config.h"
#include "piechart.h"
#include <math.h>

#ifndef M_PI
# define M_PI 3.1415926535897932385
#endif

/*
** Return an RGB color name given HSV values.  The HSV values
** must each be between between 0 and 255.  The string
** returned is held in a static buffer and is overwritten
** on each call.
*/
const char *rgbName(unsigned char h, unsigned char s, unsigned char v){
  static char zColor[8];
  unsigned char A, B, C, r, g, b;
  unsigned int i, m;
  if( s==0 ){
    r = g = b = v;
  }else{
    i = (h*6)/256;
    m = (h*6)&0xff;
    A = v*(256-s)/256;
    B = v*(65536-s*m)/65536;
    C = v*(65536-s*(256-m))/65536;
    @ <!-- hsv=%d(h),%d(s),%d(v) i=%d(i) m=%d(m) ABC=%d(A),%d(B),%d(C) -->
    switch( i ){
      case 0:  r=v; g=C; b=A;  break;
      case 1:  r=B; g=v; b=A;  break;
      case 2:  r=A; g=v; b=C;  break;
      case 3:  r=A; g=B; b=v;  break;
      case 4:  r=C; g=A; b=v;  break;
      default: r=v; g=A; b=B;  break;
    }
  }
  sqlite3_snprintf(sizeof(zColor),zColor,"#%02x%02x%02x",r,g,b);
  return zColor;
}

/*
** Flags that can be passed into the pie-chart generator
*/
#if INTERFACE
#define PIE_OTHER     0x0001    /* No wedge less than 1/60th of the circle */
#define PIE_CHROMATIC 0x0002    /* Wedge colors are in chromatic order */
#define PIE_PERCENT   0x0004    /* Add "(XX%)" marks on each label */
#endif

/*
** A pie-chart wedge label
*/
struct WedgeLabel {
  double rCos, rSin;   /* Sine and Cosine of center angle of wedge */
  char *z;             /* Label to draw on this wedge */
};
typedef struct WedgeLabel WedgeLabel;

/*
** Comparison callback for qsort() to sort labels in order of increasing
** distance above and below the horizontal centerline.
*/
static int wedgeCompare(const void *a, const void *b){
  const WedgeLabel *pA = (const WedgeLabel*)a;
  const WedgeLabel *pB = (const WedgeLabel*)b;
  double rA = fabs(pA->rCos);
  double rB = fabs(pB->rCos);
  if( rA<rB ) return -1;
  if( rA>rB ) return +1;
  return 0;
}

/*
** Output HTML that will render a pie chart using data from
** the PIECHART temporary table.
**
** The schema for the PIECHART table should be:
**
**     CREATE TEMP TABLE piechart(amt REAL, label TEXT);
*/
void piechart_render(int width, int height, unsigned int pieFlags){
  Stmt q;
  double cx, cy;          /* center of the pie */
  double r, r2;           /* Radius of the pie */
  double x1,y1;           /* Start of the slice */
  double x2,y2;           /* End of the slice */
  double x3,y3;           /* Middle point of the slice */
  double x4,y4;           /* End of line extending from x3,y3 */
  double x5,y5;           /* Text anchor */
  double d1;              /* radius to x4,y4 */
  const char *zAnc;       /* Anchor point for text */
  double a1 = 0.0;        /* Angle for first edge of slice */
  double a2;              /* Angle for second edge */
  double a3;              /* Angle at middle of slice */
  unsigned char h;        /* Hue */
  const char *zClr;       /* Color */
  int l;                  /* Large arc flag */
  int j;                  /* Wedge number */
  double rTotal;          /* Total piechart.amt */
  double rTooSmall;       /* Sum of pieChart.amt entries less than 1/60th */
  int nTotal;             /* Total number of entries in piechart */
  int nTooSmall;          /* Number of pieChart.amt entries less than 1/60th */
  const char *zFg;        /* foreground color for lines and text */
  int nWedgeAlloc = 0;    /* Slots allocated for aWedge[] */
  int nWedge = 0;         /* Slots used for aWedge[] */
  WedgeLabel *aWedge = 0; /* Labels */
  double rUprRight;       /* Floor for next label in the upper right quadrant */
  double rUprLeft;        /* Floor for next label in the upper left quadrant */
  double rLwrRight;       /* Ceiling for label in the lower right quadrant */
  double rLwrLeft;        /* Ceiling for label in the lower left quadrant */
  int i;                  /* Loop counter looping over wedge labels */

# define SATURATION    128
# define VALUE         192
# define OTHER_CUTOFF  90.0
# define TEXT_HEIGHT   15.0

  cx = 0.5*width;
  cy = 0.5*height;
  r2 = cx<cy ? cx : cy;
  r = r2 - 80.0;
  if( r<0.33333*r2 ) r = 0.33333*r2;
  h = 0;
  zFg = skin_detail_boolean("white-foreground") ? "white" : "black";

  db_prepare(&q, "SELECT sum(amt), count(*) FROM piechart");
  if( db_step(&q)!=SQLITE_ROW ){
    db_finalize(&q);
    return;
  }
  rTotal = db_column_double(&q, 0);
  nTotal = db_column_int(&q, 1);
  db_finalize(&q);
  rTooSmall = 0.0;
  nTooSmall = 0;
  if( (pieFlags & PIE_OTHER)!=0 && nTotal>1 ){
    db_prepare(&q, "SELECT sum(amt), count(*) FROM piechart WHERE amt<:amt");
    db_bind_double(&q, ":amt", rTotal/OTHER_CUTOFF);
    if( db_step(&q)==SQLITE_ROW ){
      rTooSmall = db_column_double(&q, 0);
      nTooSmall = db_column_int(&q, 1);
    }
    db_finalize(&q);
  }
  if( nTooSmall>1 ){
    db_prepare(&q, "SELECT amt, label FROM piechart WHERE amt>=:limit"
                   " UNION ALL SELECT %.17g, '%d others';",
                    rTooSmall, nTooSmall);
    db_bind_double(&q, ":limit", rTotal/OTHER_CUTOFF);
    nTotal += 1 - nTooSmall;
  }else{
    db_prepare(&q, "SELECT amt, label FROM piechart");
  }
  if( nTotal<=10 ) pieFlags |= PIE_CHROMATIC;
  for(j=0; db_step(&q)==SQLITE_ROW; j++){
    double x = db_column_double(&q,0)/rTotal;
    const char *zLbl = db_column_text(&q,1);
    /* @ <!-- x=%g(x) zLbl="%h(zLbl)" h=%d(h) --> */
    if( x<=0.0 ) continue;
    x1 = cx + sin(a1)*r;
    y1 = cy - cos(a1)*r;
    a2 = a1 + x*2.0*M_PI;
    x2 = cx + sin(a2)*r;
    y2 = cy - cos(a2)*r;
    a3 = 0.5*(a1+a2);
    if( nWedge+1>nWedgeAlloc ){
      nWedgeAlloc = nWedgeAlloc*2 + 40;
      aWedge = fossil_realloc(aWedge, sizeof(aWedge[0])*nWedgeAlloc);
    }
    if( pieFlags & PIE_PERCENT ){
      int pct = (int)(x*100.0 + 0.5);
      aWedge[nWedge].z = mprintf("%s (%d%%)", zLbl, pct);
    }else{
      aWedge[nWedge].z = fossil_strdup(zLbl);
    }
    aWedge[nWedge].rSin = sin(a3);
    aWedge[nWedge].rCos = cos(a3);
    nWedge++;
    if( (j&1)==0 || (pieFlags & PIE_CHROMATIC)!=0 ){
      h = 256*j/nTotal;
    }else if( j+2<nTotal ){
      h = 256*(j+2)/nTotal;
    }else{
      h = 256*((j+2+(nTotal&1))%nTotal)/nTotal;
    }
    zClr = rgbName(h,SATURATION,VALUE);
    l = x>=0.5;
    a1 = a2;
    @ <path class='piechartWedge'
    @  stroke="black" stroke-width="1" fill="%s(zClr)"
    @  d='M%g(cx),%g(cy)L%g(x1),%g(y1)A%g(r),%g(r) 0 %d(l),1 %g(x2),%g(y2)z'/>
  }
  qsort(aWedge, nWedge, sizeof(aWedge[0]), wedgeCompare);
  rUprLeft = height;
  rLwrLeft = 0;
  rUprRight = height;
  rLwrRight = 0;
  d1 = r*1.1;
  for(i=0; i<nWedge; i++){
    WedgeLabel *p = &aWedge[i];
    x3 = cx + p->rSin*r;
    y3 = cy - p->rCos*r;
    x4 = cx + p->rSin*d1;
    y4 = cy - p->rCos*d1;
    if( y4<=cy ){
      if( x4>=cx ){
        if( y4>rUprRight ){
          y4 = rUprRight;
        }
        rUprRight = y4 - TEXT_HEIGHT;
      }else{
        if( y4>rUprLeft ){
          y4 = rUprLeft;
        }
        rUprLeft = y4 - TEXT_HEIGHT;
      }
    }else{
      if( x4>=cx ){
        if( y4<rLwrRight ){
          y4 = rLwrRight;
        }
        rLwrRight = y4 + TEXT_HEIGHT;
      }else{
        if( y4<rLwrLeft ){
          y4 = rLwrLeft;
        }
        rLwrLeft = y4 + TEXT_HEIGHT;
      }
    }
    if( x4<cx ){
      x5 = x4 - 1.0;
      zAnc = "end";
    }else{
      x5 = x4 + 1.0;
      zAnc = "start";
    }
    y5 = y4 - 3.0 + 6.0*(1.0 - p->rCos);
    @ <line stroke-width='1' stroke='%s(zFg)' class='piechartLine'
    @  x1='%g(x3)' y1='%g(y3)' x2='%g(x4)' y2='%g(y4)'/>
    @ <text text-anchor="%s(zAnc)" fill='%s(zFg)' class="piechartLabel"
    @  x='%g(x5)' y='%g(y5)'>%h(p->z)</text>
    fossil_free(p->z);
  }
  db_finalize(&q);
  fossil_free(aWedge);
}

/*
** WEBPAGE: test-piechart
**
** Generate a pie-chart based on data input from a form.
*/
void piechart_test_page(void){
  const char *zData;
  Stmt ins;
  int n = 0;
  int width;
  int height;
  int i, j;

  login_check_credentials();
  style_set_current_feature("test");
  style_header("Pie Chart Test");
  db_multi_exec("CREATE TEMP TABLE piechart(amt REAL, label TEXT);");
  db_prepare(&ins, "INSERT INTO piechart(amt,label) VALUES(:amt,:label)");
  zData = PD("data","");
  width = atoi(PD("width","800"));
  height = atoi(PD("height","400"));
  i = 0;
  while( zData[i] ){
    double rAmt;
    char *zLabel;
    while( fossil_isspace(zData[i]) ){ i++; }
    j = i;
    while( fossil_isdigit(zData[j]) ){ j++; }
    if( zData[j]=='.' ){
      j++;
      while( fossil_isdigit(zData[j]) ){ j++; }
    }
    if( i==j ) break;
    rAmt = atof(&zData[i]);
    i = j;
    while( zData[i]==',' || fossil_isspace(zData[i]) ){ i++; }
    n++;
    zLabel = mprintf("label%02d-%g", n, rAmt);
    db_bind_double(&ins, ":amt", rAmt);
    db_bind_text(&ins, ":label", zLabel);
    db_step(&ins);
    db_reset(&ins);
    fossil_free(zLabel);
  }
  db_finalize(&ins);
  if( n>1 ){
    @ <svg width=%d(width) height=%d(height) style="border:1px solid #d3d3d3;">
    piechart_render(width,height, PIE_OTHER|PIE_PERCENT);
    @ </svg>
    @ <hr>
  }
  @ <form method="POST" action='%R/test-piechart'>
  @ <p>Comma-separated list of slice widths:<br>
  @ <input type='text' name='data' size='80' value='%h(zData)'/><br>
  @ Width: <input type='text' size='8' name='width' value='%d(width)'/>
  @ Height: <input type='text' size='8' name='height' value='%d(height)'/><br>
  @ <input type='submit' value='Draw The Pie Chart'/>
  @ </form>
  @ <p>Interesting test cases:
  @ <ul>
  @ <li> <a href='test-piechart?data=44,2,2,2,2,2,3,2,2,2,2,2,44'>Case 1</a>
  @ <li> <a href='test-piechart?data=2,2,2,2,2,44,44,2,2,2,2,2'>Case 2</a>
  @ <li> <a href='test-piechart?data=20,2,2,2,2,2,2,2,2,2,2,80'>Case 3</a>
  @ <li> <a href='test-piechart?data=80,2,2,2,2,2,2,2,2,2,2,20'>Case 4</a>
  @ <li> <a href='test-piechart?data=2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2'>Case 5</a>
  @ </ul>
  style_finish_page();
}
Added src/pikchrshow.c.



























































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains fossil-specific code related to pikchr.
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include "pikchrshow.h"

#if INTERFACE
/* These are described in pikchr_process()'s docs. */
/* The first two must match the values from pikchr.c */
#define PIKCHR_PROCESS_PLAINTEXT_ERRORS  0x0001
#define PIKCHR_PROCESS_DARK_MODE         0x0002
/* end of flags supported directly by pikchr() */
#define PIKCHR_PROCESS_PASSTHROUGH       0x0003   /* Pass through these flags */
#define PIKCHR_PROCESS_TH1               0x0004
#define PIKCHR_PROCESS_TH1_NOSVG         0x0008
#define PIKCHR_PROCESS_NONCE             0x0010
#define PIKCHR_PROCESS_ERR_PRE           0x0020
#define PIKCHR_PROCESS_SRC               0x0040
#define PIKCHR_PROCESS_DIV               0x0080
#define PIKCHR_PROCESS_DIV_INDENT        0x0100
#define PIKCHR_PROCESS_DIV_CENTER        0x0200
#define PIKCHR_PROCESS_DIV_FLOAT_LEFT    0x0400
#define PIKCHR_PROCESS_DIV_FLOAT_RIGHT   0x0800
#define PIKCHR_PROCESS_DIV_TOGGLE        0x1000
#define PIKCHR_PROCESS_DIV_SOURCE        0x2000
#define PIKCHR_PROCESS_DIV_SOURCE_INLINE 0x4000
#endif

/*
** Processes a pikchr script, optionally with embedded TH1, and
** produces HTML code for it. zIn is the NUL-terminated input
** script. pikFlags may be a bitmask of any of the PIKCHR_PROCESS_xxx
** flags documented below. thFlags may be a bitmask of any of the
** TH_INIT_xxx and/or TH_R2B_xxx flags. Output is sent to pOut,
** appending to it without modifying any prior contents.
**
** Returns 0 on success, 1 if TH1 processing failed, or 2 if pikchr
** processing failed. In either case, the error message (if any) from
** TH1 or pikchr will be appended to pOut.
**
** pikFlags flag descriptions:
**
** - PIKCHR_PROCESS_TH1 means to run zIn through TH1, using the TH1
** init flags specified in the 3rd argument. If thFlags is non-0 then
** this flag is assumed even if it is not specified.
**
** - PIKCHR_PROCESS_TH1_NOSVG means that processing stops after the
** TH1 eval step, thus the output will be (presumably) a
** TH1-generated/processed pikchr script (or whatever else the TH1
** outputs). If this flag is set, PIKCHR_PROCESS_TH1 is assumed even
** if it is not specified.
**
** All of the remaining flags listed below are ignored if
** PIKCHR_PROCESS_TH1_NOSVG is specified!
**
** - PIKCHR_PROCESS_DIV: if set, the SVG result is wrapped in a DIV
** element which specifies a max-width style value based on the SVG's
** calculated size. This flag has multiple mutually exclusive forms:
**
**  - PIKCHR_PROCESS_DIV uses default element alignment.
**  - PIKCHR_PROCESS_DIV_INDENT indents the div.
**  - PIKCHR_PROCESS_DIV_CENTER centers the div.
**  - PIKCHR_PROCESS_DIV_FLOAT_LEFT floats the div left.
**  - PIKCHR_PROCESS_DIV_FLOAT_RIGHT floats the div right.
**
** If more than one is specified, which one is used is undefined. Those
** flags may be OR'd with one or both of the following:
**
**  - PIKCHR_PROCESS_DIV_TOGGLE: adds the 'toggle' CSS class to the
**    outer DIV so that event-handler code can install different
**    toggling behaviour than the default. Default is ctrl-click, but
**    this flag enables single-click toggling for the element.
**
**  - PIKCHR_PROCESS_DIV_SOURCE: adds the 'source' CSS class to the
**    outer DIV, which is a hint to the client-side renderer (see
**    fossil.pikchr.js) that the pikchr should initially be rendered
**    in source code form mode (the default is to hide the source and
**    show the SVG).
**
**  - PIKCHR_PROCESS_DIV_SOURCE_INLINE: adds the 'source-inline' CSS
**    class to the outer wrapper. This modifier changes how the
**    'source' CSS class gets applied: with this flag, the source view
**    should be rendered "inline" (same position as the graphic), else
**    it is to be left-aligned.
**
** - PIKCHR_PROCESS_NONCE: if set, the resulting SVG/DIV are wrapped
** in "safe nonce" comments, which are a fossil-internal mechanism
** which prevents the wiki/markdown processors from re-processing this
** output. This is necessary when calling this routine in the context
** of wiki/embedded doc processing, but not (e.g.) when fetching
** an image for /pikchrpage.
**
** - PIKCHR_PROCESS_SRC: if set, a new PRE.pikchr-src element is
** injected adjacent to the SVG element which contains the
** HTML-escaped content of the input script. If
** PIKCHR_PROCESS_DIV_SOURCE or PIKCHR_PROCESS_DIV_SOURCE_INLINE is
** set, this flag is automatically implied.
**
** - PIKCHR_PROCESS_ERR_PRE: if set and pikchr() fails, the resulting
** error report is wrapped in a PRE element, else it is retained
** as-is (intended only for console output).
*/
int pikchr_process(const char * zIn, int pikFlags, int thFlags,
                   Blob * pOut){
  Blob bIn = empty_blob;
  int isErr = 0;
  const char *zNonce = (PIKCHR_PROCESS_NONCE & pikFlags)
    ? safe_html_nonce(1) : 0;

  if(!(PIKCHR_PROCESS_DIV & pikFlags)
     /* If any DIV_xxx flags are set, set DIV */
     && (PIKCHR_PROCESS_DIV_INDENT
         | PIKCHR_PROCESS_DIV_CENTER
         | PIKCHR_PROCESS_DIV_FLOAT_RIGHT
         | PIKCHR_PROCESS_DIV_FLOAT_LEFT
         | PIKCHR_PROCESS_DIV_SOURCE
         | PIKCHR_PROCESS_DIV_SOURCE_INLINE
         | PIKCHR_PROCESS_DIV_TOGGLE
         ) & pikFlags){
    pikFlags |= PIKCHR_PROCESS_DIV;
  }
  if(!(PIKCHR_PROCESS_TH1 & pikFlags)
     /* If any TH1_xxx flags are set, set TH1 */
     && (PIKCHR_PROCESS_TH1_NOSVG & pikFlags || thFlags!=0)){
    pikFlags |= PIKCHR_PROCESS_TH1;
  }
  if(zNonce){
    blob_appendf(pOut, "%s\n", zNonce);
  }
  if(PIKCHR_PROCESS_TH1 & pikFlags){
    Blob out = empty_blob;
    isErr = Th_RenderToBlob(zIn, &out, thFlags)
      ? 1 : 0;
    if(isErr){
      blob_append(pOut, blob_str(&out), blob_size(&out));
      blob_reset(&out);
    }else{
      bIn = out;
    }
  }else{
    blob_init(&bIn, zIn, -1);
  }
  if(!isErr){
    if(PIKCHR_PROCESS_TH1_NOSVG & pikFlags){
      blob_append(pOut, blob_str(&bIn), blob_size(&bIn));
    }else{
      int w = 0, h = 0;
      const char * zContent = blob_str(&bIn);
      char *zOut;
      zOut = pikchr(zContent, "pikchr",
                    0x01 | (pikFlags&PIKCHR_PROCESS_PASSTHROUGH),
                    &w, &h);
      if( w>0 && h>0 ){
        const char * zClassToggle = "";
        const char * zClassSource = "";
        const char * zWrapperClass = "";
        if(PIKCHR_PROCESS_DIV & pikFlags){
          if(PIKCHR_PROCESS_DIV_CENTER & pikFlags){
            zWrapperClass = " center";
          }else if(PIKCHR_PROCESS_DIV_INDENT & pikFlags){
            zWrapperClass = " indent";
          }else if(PIKCHR_PROCESS_DIV_FLOAT_LEFT & pikFlags){
            zWrapperClass = " float-left";
          }else if(PIKCHR_PROCESS_DIV_FLOAT_RIGHT & pikFlags){
            zWrapperClass = " float-right";
          }
          if(PIKCHR_PROCESS_DIV_TOGGLE & pikFlags){
            zClassToggle = " toggle";
          }
          if(PIKCHR_PROCESS_DIV_SOURCE_INLINE & pikFlags){
            if(PIKCHR_PROCESS_DIV_SOURCE & pikFlags){
              zClassSource = " source source-inline";
            }else{
              zClassSource = " source-inline";
            }
            pikFlags |= PIKCHR_PROCESS_SRC;
          }else if(PIKCHR_PROCESS_DIV_SOURCE & pikFlags){
            zClassSource = " source";
            pikFlags |= PIKCHR_PROCESS_SRC;
          }
          blob_appendf(pOut,"<div class='pikchr-wrapper"
                       "%s%s%s'>"
                       "<div class=\"pikchr-svg\" "
                       "style=\"max-width:%dpx\">\n",
                       zWrapperClass/*safe-for-%s*/,
                       zClassToggle/*safe-for-%s*/,
                       zClassSource/*safe-for-%s*/, w);
        }
        blob_append(pOut, zOut, -1);
        if(PIKCHR_PROCESS_DIV & pikFlags){
          blob_append(pOut, "</div>\n", 7);
        }
        if(PIKCHR_PROCESS_SRC & pikFlags){
          static int counter = 0;
          ++counter;
          blob_appendf(pOut, "<div class='pikchr-src'>"
                       "<pre id='pikchr-src-%d'>%h</pre>"
                       "<span class='hidden'>"
                       "<a href='%R/pikchrshow?fromSession' "
                       "class='pikchr-src-pikchrshow' target='_new-%d' "
                       "data-pikchrid='pikchr-src-%d' "
                       "title='Open this pikchr in /pikchrshow'"
                       ">&rarr; /pikchrshow</a></span>"
                       "</div>\n",
                       counter, blob_str(&bIn), counter, counter);
        }
        if(PIKCHR_PROCESS_DIV & pikFlags){
          blob_append(pOut, "</div>\n", 7);
        }
      }else{
        isErr = 2;
        if(PIKCHR_PROCESS_ERR_PRE & pikFlags){
          blob_append(pOut, "<pre class='error'>\n", 20);
        }
        blob_appendf(pOut, "%h", zOut);
        if(PIKCHR_PROCESS_ERR_PRE & pikFlags){
          blob_append(pOut, "\n</pre>\n", 8);
        }
      }
      fossil_free(zOut);
    }
  }
  if(zNonce){
    blob_appendf(pOut, "%s\n", zNonce);
  }
  blob_reset(&bIn);
  return isErr;
}

/*
** Legacy impl of /pikchrshow. pikchrshow_page() will delegate to
** this one if the "legacy" or "ajax" request arguments are set.
**
** A pikchr code editor and previewer, allowing users to experiment
** with pikchr code or prototype it for use in copy/pasting into forum
** posts, wiki pages, or embedded docs. This version of pikchrshow
** uses JavaScript to send pikchr code to the server for
** processing. The newer /pikchrshow applications runs pikchr on the
** client machine, without the need for back-and-forth network
** traffic.
*/
void pikchrshowcs_page(void){
  const char *zContent = 0;
  int isDark;              /* true if the current skin is "dark" */
  int pikFlags =
    PIKCHR_PROCESS_DIV
    | PIKCHR_PROCESS_SRC
    | PIKCHR_PROCESS_ERR_PRE;

  login_check_credentials();
  if( !g.perm.RdWiki && !g.perm.Read && !g.perm.RdForum ){
    cgi_redirectf("%R/login?g=pikchrshowcs");
  }
  if(P("wasm")){
    pikchrshow_page();
    return;
  }
  zContent = PD("content",P("p"));
  if(P("ajax")!=0){
    /* Called from the JS-side preview updater.
       TODO: respond with JSON instead.*/
    cgi_set_content_type("text/html");
    if(zContent && *zContent){
      Blob out = empty_blob;
      const int isErr =
        pikchr_process(zContent, pikFlags, 0, &out);
      if(isErr){
        cgi_printf_header("x-pikchrshow-is-error: %d\r\n", isErr);
      }
      CX("%b", &out);
      blob_reset(&out);
    }else{
      CX("<pre>No content! Nothing to render</pre>");
    }
    return;
  }/*ajax response*/
  style_emit_noscript_for_js_page();
  isDark = skin_detail_boolean("white-foreground");
  if(!zContent){
    zContent = "arrow right 200% \"Markdown\" \"Source\"\n"
      "box rad 10px \"Markdown\" \"Formatter\" \"(markdown.c)\" fit\n"
      "arrow right 200% \"HTML+SVG\" \"Output\"\n"
      "arrow <-> down from last box.s\n"
      "box same \"Pikchr\" \"Formatter\" \"(pikchr.c)\" fit\n";
  }
  style_header("PikchrShow Client/Server");
  CX("<style>"); {
    CX("div.content { padding-top: 0.5em }\n");
    CX("#sbs-wrapper {"
       "display: flex; flex-direction: column;"
       "}\n");
    CX("#sbs-wrapper > * {"
       "margin: 0 0.25em 0.5em 0; flex: 1 10 auto;"
       "align-self: stretch;"
       "}\n");
    CX("#sbs-wrapper textarea {"
       "max-width: initial; flex: 1 1 auto;"
       "}\n");
    CX("#pikchrshow-output, #pikchrshow-form"
       "{display: flex; flex-direction: column; align-items: stretch;}");
    CX("#pikchrshow-form > * {margin: 0.25em 0}\n");
    CX("#pikchrshow-output {flex: 5 1 auto; padding: 0}\n");
    CX("#pikchrshow-output > pre, "
       "#pikchrshow-output > pre > div, "
       "#pikchrshow-output > pre > div > pre "
       "{margin: 0; padding: 0}\n");
    CX("#pikchrshow-output.error > pre "
       /* Server-side error report */
       "{padding: 0.5em}\n");
    CX("#pikchrshow-controls {" /* where the buttons live */
       "display: flex; flex-direction: row; "
       "align-items: center; flex-wrap: wrap;"
       "}\n");
    CX("#pikchrshow-controls > * {"
       "display: inline; margin: 0 0.25em 0.5em 0;"
       "}\n");
    CX("#pikchrshow-output-wrapper label {"
       "cursor: pointer;"
       "}\n");
    CX("body.pikchrshow .input-with-label > * {"
       "margin: 0 0.2em;"
       "}\n");
    CX("body.pikchrshow .input-with-label > label {"
       "cursor: pointer;"
       "}\n");
    CX("#pikchrshow-output.dark-mode svg {"
       /* Flip the colors to approximate a dark theme look */
       "filter: invert(1) hue-rotate(180deg);"
       "}\n");
    CX("#pikchrshow-output-wrapper {"
       "padding: 0.25em 0.5em; border-radius: 0.25em;"
       "border-width: 1px;"/*some skins disable fieldset borders*/
       "}\n");
    CX("#pikchrshow-output-wrapper > legend > *:not(.copy-button){"
       "margin-right: 0.5em; vertical-align: middle;"
       "}\n");
    CX("body.pikchrshow .v-align-middle{"
       "vertical-align: middle"
       "}\n");
    CX(".dragover {border: 3px dotted rgba(0,255,0,0.6)}\n");
  } CX("</style>");
  CX("<div>Input pikchr code and tap Preview (or Shift-Enter) to render "
     "it. <a href='?wasm'>Switch to WASM mode</a>.</div>");
  CX("<div id='sbs-wrapper'>"); {
    CX("<div id='pikchrshow-form'>"); {
      CX("<textarea id='content' name='content' rows='15'>"
         "%s</textarea>",zContent/*safe-for-%s*/);
      CX("<div id='pikchrshow-controls'>"); {
        CX("<button id='pikchr-submit-preview'>Preview</button>");
        CX("<div class='input-with-label'>"); {
          CX("<button id='pikchr-stash'>Stash</button>");
          CX("<button id='pikchr-unstash'>Unstash</button>");
          CX("<button id='pikchr-clear-stash'>Clear stash</button>");
          CX("<span>Stores/restores a single pikchr script to/from "
             "browser-local storage from/to the editor.</span>"
             /* gets turned into a help-buttonlet */);
        } CX("</div>"/*stash controls*/);
        style_labeled_checkbox("flipcolors-wrapper", "flipcolors",
                               "Dark mode?",
                               "1", isDark, 0);
      } CX("</div>"/*#pikchrshow-controls*/);
    }
    CX("</div>"/*#pikchrshow-form*/);
    CX("<fieldset id='pikchrshow-output-wrapper'>"); {
      CX("<legend></legend>"
         /* Reminder: Firefox does not properly flexbox a LEGEND
            element, always flowing it in column mode. */);
      CX("<div id='pikchrshow-output'>");
      if(*zContent){
        Blob out = empty_blob;
        pikchr_process(zContent, pikFlags, 0, &out);
        CX("%b", &out);
        blob_reset(&out);
      } CX("</div>"/*#pikchrshow-output*/);
    } CX("</fieldset>"/*#pikchrshow-output-wrapper*/);
  } CX("</div>"/*sbs-wrapper*/);
  builtin_fossil_js_bundle_or("fetch", "copybutton", "popupwidget",
                              "storage", "pikchr", NULL);
  builtin_request_js("fossil.page.pikchrshow.js");
  builtin_fulfill_js_requests();
  style_finish_page();
}

/*
** WEBPAGE: pikchrshow
**
** A pikchr code editor and previewer, allowing users to experiment
** with pikchr code or prototype it for use in copy/pasting into forum
** posts, wiki pages, or embedded docs. This version of pikchrshow
** uses WebAssembly to run entirely in the client browser, without a
** need for back-and-forth client/server traffic to perform the
** rendering. The "legacy" version of this application, which sends
** all input to the server for rendering, can be accessed by adding
** the "legacy" URL argument.
**
** It optionally accepts a p=pikchr-script-code URL parameter or POST
** value to pre-populate the editor with that code.
*/
void pikchrshow_page(void){
  const char *zContent = 0;

  if(P("legacy") || P("ajax")){
    pikchrshowcs_page();
    return;
  }
  login_check_credentials();
  if( !g.perm.RdWiki && !g.perm.Read && !g.perm.RdForum ){
    cgi_redirectf("%R/login?g=pikchrshow");
  }
  style_emit_noscript_for_js_page();
  style_header("PikchrShow");
  zContent = PD("content",P("p"));
  if(!zContent){
    zContent = "arrow right 200% \"Markdown\" \"Source\"\n"
      "box rad 10px \"Markdown\" \"Formatter\" \"(markdown.c)\" fit\n"
      "arrow right 200% \"HTML+SVG\" \"Output\"\n"
      "arrow <-> down from last box.s\n"
      "box same \"Pikchr\" \"Formatter\" \"(pikchr.c)\" fit\n";
  }
  /* Wasm load/init progress widget... */
  CX("<div class='emscripten'>"); {
    CX("<figure id='module-spinner'>");
      CX("<div class='spinner'></div>");
      CX("<div class='center'><strong>Initializing app...</strong></div>");
      CX("<div class='center'>");
        CX("On a slow internet connection this may take a moment.  If this ");
        CX("message displays for \"a long time\", initialization may have ");
        CX("failed and the JavaScript console may contain clues as to why. ");
      CX("</div>");
      CX("<div><a href='?legacy'>Switch to legacy mode</a></div>");
    CX("</figure>");
    CX("<div class='emscripten' id='module-status'>Downloading...</div>");
    CX("<progress value='0' max='100' id='module-progress' hidden='1'>"
       "</progress>");
  } CX("</div><!-- .emscripten -->");
  /* Main view... */
  CX("<div id='view-split' class='app-view initially-hidden'>"); {
    CX("<fieldset class='options collapsible'>"); {
      CX("<legend><button class='fieldset-toggle'>Options</button></legend>");
      CX("<div>");
      CX("<span class='labeled-input'>");
        CX("<input type='checkbox' id='opt-cb-sbs' ");
        CX("data-csstgt='#main-wrapper' ");
        CX("data-cssclass='side-by-side' ");
        CX("data-config='sideBySide'>");
        CX("<label for='opt-cb-sbs'>Side-by-side</label>");
      CX("</span>");
      CX("<span class='labeled-input'>");
        CX("<input type='checkbox' id='opt-cb-swapio' ");
        CX("data-csstgt='#main-wrapper' ");
        CX("data-cssclass='swapio' ");
        CX("data-config='swapInOut'>");
        CX("<label for='opt-cb-swapio'>Swap in/out</label>");
      CX("</span>");
      CX("<span class='labeled-input'>");
        CX("<input type='checkbox' id='opt-cb-autofit' ");
        CX("data-config='renderAutofit'>");
        CX("<label for='opt-cb-autofit' "
           "title='Attempt to scale SVG to fit viewport. "
           "Whether it will work depends in part on the size "
           "and shape of the image and the viewport.'"
           ">Auto-fit SVG</label>");
      CX("</span>");
      CX("<span class='labeled-input'>");
        CX("<input type='checkbox' id='opt-cb-autorender' ");
        CX("data-csstgt='#main-wrapper' ");
        CX("data-cssclass='auto-render' ");
        CX("data-config='renderWhileTyping'>");
        CX("<label for='opt-cb-autorender'>Render while typing</label>");
      CX("</span>");
      CX("<span class='labeled-input'>");
        CX("<a href='?legacy'>Legacy mode</a>");
      CX("</span>");
      CX("</div><!-- options wrapper -->");
    } CX("</fieldset>");
    CX("<div id='main-wrapper' class=''>"); {
      CX("<fieldset class='zone-wrapper input'>"); {
        CX("<legend><div class='button-bar'>");
          CX("<button id='btn-render' "
             "title='Ctrl-Enter/Shift-Enter'>Render</button>");
          CX("<button id='btn-clear'>Clear Input</button>");
        CX("</div></legend>");
        CX("<div><textarea id='input'");
          CX("placeholder='Pikchr input. Ctrl-enter/shift-enter runs it.'>");
          CX("/**\n");
          CX("  Use ctrl-enter or shift-enter to execute\n");
          CX("  pikchr code. If only a subset is currently\n");
          CX("  selected, only that part is evaluated.\n*/\n");
        CX("%s</textarea></div>",zContent/*safe-for-%s*/);
      } CX("</fieldset><!-- .zone-wrapper.input -->");
      CX("<fieldset class='zone-wrapper output'>"); {
        CX("<legend><div class='button-bar'>");
          CX("<button id='btn-render-mode'>Render Mode</button> ");
          CX("<span style='white-space:nowrap'>"
             "<span id='preview-copy-button' "
             "title='Tap to copy to clipboard.'></span>"
             "<label for='preview-copy-button' "
             "title='Tap to copy to clipboard.'></label>"
             "</span>");
        CX("</div></legend>");
        CX("<div id='pikchr-output-wrapper'>");
          CX("<div id='pikchr-output'></div>");
          CX("<textarea class='hidden' id='pikchr-output-text'></textarea>");
        CX("</div>");
      } CX("</fieldset> <!-- .zone-wrapper.output -->");
    } CX("</div><!-- #main-wrapper -->");
  } CX("</div><!-- #view-split -->");
  builtin_fossil_js_bundle_or("dom", "storage", "copybutton", NULL);
  builtin_request_js("fossil.page.pikchrshowasm.js");
  builtin_fulfill_js_requests();
  style_finish_page();
}


/*
** COMMAND: pikchr*
**
** Usage: %fossil pikchr [options] ?INFILE? ?OUTFILE?
**
** Accepts a pikchr script as input and outputs the rendered script as
** an SVG graphic. The INFILE and OUTFILE options default to stdin
** resp. stdout, and the names "-" can be used as aliases for those
** streams.
**
** Options:
**    -div       On success, add a DIV wrapper around the
**               resulting SVG output which limits its max-width to
**               its computed maximum ideal size
**
**    -div-indent  Like -div but indent the div
**
**    -div-center  Like -div but center the div
**
**    -div-left    Like -div but float the div left
**
**    -div-right   Like -div but float the div right
**
**    -div-toggle  Set the 'toggle' CSS class on the div (used by the
**                 JavaScript-side post-processor)
**
**    -div-source  Set the 'source' CSS class on the div, which tells
**                 CSS to hide the SVG and reveal the source by default.
**
**    -src       Store the input pikchr's source code in the output as
**               a separate element adjacent to the SVG one. Implied
**               by -div-source.
**
**
**    -th        Process the input using TH1 before passing it to pikchr
**
**    -th-novar  Disable $var and $<var> TH1 processing. Use this if the
**               pikchr script uses '$' for its own purposes and that
**               causes issues. This only affects parsing of '$' outside
**               of TH1 script blocks. Code in such blocks is unaffected.
**
**    -th-nosvg  When using -th, output the post-TH1'd script
**               instead of the pikchr-rendered output
**
**    -th-trace  Trace TH1 execution (for debugging purposes)
**
**    -dark      Change pikchr colors to assume a dark-mode theme.
**
**
** The -div-indent/center/left/right flags may not be combined.
**
** TH1-related Notes and Caveats:
**
** If the -th flag is used, this command must open a fossil database
** for certain functionality to work (via a check-out or the -R REPO
** flag). If opening a db fails, execution will continue but any TH1
** commands which require a db will trigger a fatal error.
**
** In Fossil skins, TH1 variables in the form $varName are expanded
** as-is and those in the form $<varName> are htmlized in the
** resulting output. This processor disables the htmlizing step, so $x
** and $<x> are equivalent unless the TH1-processed pikchr script
** invokes the TH1 command [enable_htmlify 1] to enable it. Normally
** that option will interfere with pikchr output, however, e.g. by
** HTML-encoding double-quotes.
**
** Many of the fossil-installed TH1 functions simply do not make any
** sense for pikchr scripts.
*/
void pikchr_cmd(void){
  Blob bIn = empty_blob;
  Blob bOut = empty_blob;
  const char * zInfile = "-";
  const char * zOutfile = "-";
  const int fTh1 = find_option("th",0,0)!=0;
  const int fNosvg = find_option("th-nosvg",0,0)!=0;
  int isErr = 0;
  int pikFlags = find_option("src",0,0)!=0
    ? PIKCHR_PROCESS_SRC : 0;
  u32 fThFlags = TH_INIT_NO_ENCODE
    | (find_option("th-novar",0,0)!=0 ? TH_R2B_NO_VARS : 0);

  Th_InitTraceLog()/*processes -th-trace flag*/;

  if(find_option("div",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV;
  }else if(find_option("div-indent",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV_INDENT;
  }else if(find_option("div-center",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV_CENTER;
  }else if(find_option("div-float-left",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV_FLOAT_LEFT;
  }else if(find_option("div-float-right",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV_FLOAT_RIGHT;
  }
  if(find_option("div-toggle",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV_TOGGLE;
  }
  if(find_option("div-source",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DIV_SOURCE | PIKCHR_PROCESS_SRC;
  }
  if(find_option("dark",0,0)!=0){
    pikFlags |= PIKCHR_PROCESS_DARK_MODE;
  }

  verify_all_options();
  if(g.argc>4){
    usage("?INFILE? ?OUTFILE?");
  }
  if(g.argc>2){
    zInfile = g.argv[2];
  }
  if(g.argc>3){
    zOutfile = g.argv[3];
  }
  blob_read_from_file(&bIn, zInfile, ExtFILE);
  if(fTh1){
    db_find_and_open_repository(OPEN_ANY_SCHEMA | OPEN_OK_NOT_FOUND, 0)
      /* ^^^ needed for certain TH1 functions to work */;
    pikFlags |= PIKCHR_PROCESS_TH1;
    if(fNosvg) pikFlags |= PIKCHR_PROCESS_TH1_NOSVG;
  }
  isErr = pikchr_process(blob_str(&bIn), pikFlags,
                         fTh1 ? fThFlags : 0, &bOut);
  if(isErr){
    fossil_fatal("%s ERROR:%c%b", 1==isErr ? "TH1" : "pikchr",
                 1==isErr ? ' ' : '\n',
                 &bOut);
  }else{
    blob_write_to_file(&bOut, zOutfile);
  }
  Th_PrintTraceLog();
  blob_reset(&bIn);
  blob_reset(&bOut);
}
Changes to src/pivot.c.
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** Set the primary file.  The primary version is one of the two
** files that have a common ancestor.  The other file is the secondary.
** There can be multiple secondaries but only a single primary.
** The primary must be set first.
**
** In the merge algorithm, the file being merged in is the primary.
** The current check-out or other files that have been merged into
** the current checkout are the secondaries.
** the current check-out are the secondaries.
**
** The act of setting the primary resets the pivot-finding algorithm.
*/
void pivot_set_primary(int rid){
  /* Set up table used to do the search */
  db_multi_exec(
    "CREATE TEMP TABLE IF NOT EXISTS aqueue("
    "  rid INTEGER PRIMARY KEY,"  /* The record id for this version */
    "  rid INTEGER,"              /* The record id for this version */
    "  mtime REAL,"               /* Time when this version was created */
    "  pending BOOLEAN,"          /* True if we have not check this one yet */
    "  src BOOLEAN"               /* 1 for primary.  0 for others */
    ");"
    "  src BOOLEAN,"               /* 1 for primary.  0 for others */
    "  PRIMARY KEY(rid,src)"
    ") WITHOUT ROWID;"
    "DELETE FROM aqueue;"
    "CREATE INDEX IF NOT EXISTS aqueue_idx1 ON aqueue(pending, mtime);"
  );

  /* Insert the primary record */
  db_multi_exec( 
  db_multi_exec(
    "INSERT INTO aqueue(rid, mtime, pending, src)"
    "  SELECT %d, mtime, 1, 1 FROM plink WHERE cid=%d LIMIT 1",
    "  SELECT %d, mtime, 1, 1 FROM event WHERE objid=%d AND type='ci' LIMIT 1",
    rid, rid
  );
}

/*
** Set a secondary file.  The primary file must be set first.  There
** must be at least one secondary but there can be more than one if
** desired.
*/
void pivot_set_secondary(int rid){
  /* Insert the primary record */
  db_multi_exec( 
  /* Insert the secondary record */
  db_multi_exec(
    "INSERT OR IGNORE INTO aqueue(rid, mtime, pending, src)"
    "  SELECT %d, mtime, 1, 0 FROM plink WHERE cid=%d",
    "  SELECT %d, mtime, 1, 0 FROM event WHERE objid=%d AND type='ci'",
    rid, rid
  );
}

/*
** Find the most recent common ancestor of the primary and one of
** the secondaries.  Return its rid.  Return 0 if no common ancestor
** can be found.
**
** If ignoreMerges is true, follow only "primary" parent links.
*/
int pivot_find(void){
int pivot_find(int ignoreMerges){
  Stmt q1, q2, u1, i1;
  int rid = 0;
  

  /* aqueue must contain at least one primary and one other.  Otherwise
  ** we abort early
  */
  if( db_int(0, "SELECT count(distinct src) FROM aqueue")<2 ){
    fossil_panic("lack both primary and secondary files");
    fossil_fatal("lack both primary and secondary files");
  }

  /* Prepare queries we will be needing
  **
  ** The first query finds the oldest pending version on the aqueue.  This
  ** will be next one searched.
  */
  db_prepare(&q1, "SELECT rid FROM aqueue WHERE pending"
                  " ORDER BY pending DESC, mtime DESC");

  /* Check to see if the record :rid is a common ancestor.  The result
  ** set contains one or more rows if it is and is the empty set if it
  ** is not.
  */
  db_prepare(&q2,
    "SELECT 1 FROM aqueue A, plink, aqueue B"
    " WHERE plink.pid=:rid"
    "   AND plink.cid=B.rid"
    "   AND A.rid=:rid"
    "   AND A.src!=B.src"
    "   AND A.src!=B.src %s",
    ignoreMerges ? "AND plink.isprim" : ""
  );

  /* Mark the :rid record has having been checked.  It is not the
  ** common ancestor.
  */
  db_prepare(&u1,
    "UPDATE aqueue SET pending=0 WHERE rid=:rid"
  );

  /* Add to the queue all ancestors of :rid.
  */
  db_prepare(&i1,
    "INSERT OR IGNORE INTO aqueue "
    "REPLACE INTO aqueue "
    "SELECT plink.pid,"
    "       coalesce((SELECT mtime FROM plink X WHERE X.cid=plink.pid), 0.0),"
    "       coalesce((SELECT mtime FROM event X WHERE X.objid=plink.pid), 0.0),"
    "       1,"
    "       aqueue.src "
    "  FROM plink, aqueue"
    " WHERE plink.cid=:rid"
    "   AND aqueue.rid=:rid"
    "   AND aqueue.rid=:rid %s",
    ignoreMerges ? "AND plink.isprim" : ""
  );

  while( db_step(&q1)==SQLITE_ROW ){
    rid = db_column_int(&q1, 0);
    db_reset(&q1);
    db_bind_int(&q2, ":rid", rid);
    if( db_step(&q2)==SQLITE_ROW ){
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  db_finalize(&q2);
  db_finalize(&i1);
  db_finalize(&u1);
  return rid;
}

/*
** COMMAND:  test-find-pivot
** COMMAND: merge-base
**
** Usage: %fossil merge-base ?options? PRIMARY SECONDARY ...
**
** Find a common ancestor given two or more check-in versions to
** hypothetically merge.
**
** Test the pivot_find() procedure.
** Options:
**    --ignore-merges       Ignore merges for discovering name pivots
*/
void test_find_pivot(void){
void merge_base_cmd(void){
  int i, rid;
  int ignoreMerges = find_option("ignore-merges",0,0)!=0;
  int showDetails = find_option("details",0,0)!=0
    /* intentionally undocumented */;
  if( g.argc<4 ){
    usage("PRIMARY SECONDARY ...");
    usage("?options? PRIMARY SECONDARY ...");
  }
  db_must_be_within_tree();
  pivot_set_primary(name_to_rid(g.argv[2]));
  for(i=3; i<g.argc; i++){
    pivot_set_secondary(name_to_rid(g.argv[i]));
  }
  rid = pivot_find();
  printf("pivot=%s\n",
         db_text("?","SELECT uuid FROM blob WHERE rid=%d",rid)
  );
}
  rid = pivot_find(ignoreMerges);
  if( rid==0 ){
    puts("No common ancestor found.");
  }else{
    printf("pivot=%s\n",
           db_text("?","SELECT uuid FROM blob WHERE rid=%d",rid));
  }
  if( showDetails ){
    Stmt q;
    db_prepare(&q,
      "SELECT substr(uuid,1,12), aqueue.rid, datetime(aqueue.mtime),"
             " aqueue.pending, aqueue.src\n"
      "  FROM aqueue JOIN blob ON aqueue.rid=blob.rid\n"
      " ORDER BY aqueue.mtime DESC"
    );
    while( db_step(&q)==SQLITE_ROW ){
      printf("\"%s\",%d,\"%s\",%d,%d\n",
        db_column_text(&q, 0),
        db_column_int(&q, 1),
        db_column_text(&q, 2),
        db_column_int(&q, 3),
        db_column_int(&q, 4));
    }
    db_finalize(&q);
  }
}
Added src/popen.c.






































































































































































































































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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains an implementation of a bi-directional popen().
*/
#include "config.h"
#include "popen.h"

#ifdef _WIN32
#include <windows.h>
#include <fcntl.h>
/*
** Print a fatal error and quit.
*/
static void win32_fatal_error(const char *zMsg){
  fossil_fatal("%s", zMsg);
}
#else
#include <signal.h>
#include <sys/wait.h>
#endif

/*
** The following macros are used to cast pointers to integers and
** integers to pointers.  The way you do this varies from one compiler
** to the next, so we have developed the following set of #if statements
** to generate appropriate macros for a wide range of compilers.
**
** The correct "ANSI" way to do this is to use the intptr_t type.
** Unfortunately, that typedef is not available on all compilers, or
** if it is available, it requires an #include of specific headers
** that vary from one machine to the next.
**
** This code is copied out of SQLite.
*/
#if defined(__PTRDIFF_TYPE__)  /* This case should work for GCC */
# define INT_TO_PTR(X)  ((void*)(__PTRDIFF_TYPE__)(X))
# define PTR_TO_INT(X)  ((int)(__PTRDIFF_TYPE__)(X))
#elif !defined(__GNUC__)       /* Works for compilers other than LLVM */
# define INT_TO_PTR(X)  ((void*)&((char*)0)[X])
# define PTR_TO_INT(X)  ((int)(((char*)X)-(char*)0))
#elif defined(HAVE_STDINT_H)   /* Use this case if we have ANSI headers */
# define INT_TO_PTR(X)  ((void*)(intptr_t)(X))
# define PTR_TO_INT(X)  ((int)(intptr_t)(X))
#else                          /* Generates a warning - but it always works */
# define INT_TO_PTR(X)  ((void*)(X))
# define PTR_TO_INT(X)  ((int)(X))
#endif


#ifdef _WIN32
/*
** On windows, create a child process and specify the stdin, stdout,
** and stderr channels for that process to use.
**
** Return the number of errors.
*/
static int win32_create_child_process(
  wchar_t *zCmd,       /* The command that the child process will run */
  HANDLE hIn,          /* Standard input */
  HANDLE hOut,         /* Standard output */
  HANDLE hErr,         /* Standard error */
  DWORD *pChildPid     /* OUT: Child process handle */
){
  STARTUPINFOW si;
  PROCESS_INFORMATION pi;
  BOOL rc;

  memset(&si, 0, sizeof(si));
  si.cb = sizeof(si);
  si.dwFlags = STARTF_USESTDHANDLES;
  SetHandleInformation(hIn, HANDLE_FLAG_INHERIT, TRUE);
  si.hStdInput  = hIn;
  SetHandleInformation(hOut, HANDLE_FLAG_INHERIT, TRUE);
  si.hStdOutput = hOut;
  SetHandleInformation(hErr, HANDLE_FLAG_INHERIT, TRUE);
  si.hStdError  = hErr;
  rc = CreateProcessW(
     NULL,  /* Application Name */
     zCmd,  /* Command-line */
     NULL,  /* Process attributes */
     NULL,  /* Thread attributes */
     TRUE,  /* Inherit Handles */
     0,     /* Create flags  */
     NULL,  /* Environment */
     NULL,  /* Current directory */
     &si,   /* Startup Info */
     &pi    /* Process Info */
  );
  if( rc ){
    CloseHandle( pi.hProcess );
    CloseHandle( pi.hThread );
    *pChildPid = pi.dwProcessId;
  }else{
    win32_fatal_error("cannot create child process");
  }
  return rc!=0;
}
#endif

/*
** Create a child process running shell command "zCmd".  *ppOut is
** a FILE that becomes the standard input of the child process.
** (The caller writes to *ppOut in order to send text to the child.)
** *ppIn is stdout from the child process.  (The caller
** reads from *ppIn in order to receive input from the child.)
** Note that *ppIn is an unbuffered file descriptor, not a FILE.
** The process ID of the child is written into *pChildPid.
**
** Return the number of errors.
*/
int popen2(
  const char *zCmd,      /* Command to run in the child process */
  int *pfdIn,            /* Read from child using this file descriptor */
  FILE **ppOut,          /* Write to child using this file descriptor */
  int *pChildPid,        /* PID of the child process */
  int bDirect            /* 0: run zCmd as a shell cmd.  1: run directly */
){
#ifdef _WIN32
  HANDLE hStdinRd, hStdinWr, hStdoutRd, hStdoutWr, hStderr;
  SECURITY_ATTRIBUTES saAttr;
  DWORD childPid = 0;
  int fd;

  saAttr.nLength = sizeof(saAttr);
  saAttr.bInheritHandle = TRUE;
  saAttr.lpSecurityDescriptor = NULL;
  hStderr = GetStdHandle(STD_ERROR_HANDLE);
  if( !CreatePipe(&hStdoutRd, &hStdoutWr, &saAttr, 4096) ){
    win32_fatal_error("cannot create pipe for stdout");
  }
  SetHandleInformation( hStdoutRd, HANDLE_FLAG_INHERIT, FALSE);

  if( !CreatePipe(&hStdinRd, &hStdinWr, &saAttr, 4096) ){
    win32_fatal_error("cannot create pipe for stdin");
  }
  SetHandleInformation( hStdinWr, HANDLE_FLAG_INHERIT, FALSE);

  win32_create_child_process(fossil_utf8_to_unicode(zCmd),
                             hStdinRd, hStdoutWr, hStderr,&childPid);
  *pChildPid = childPid;
  *pfdIn = _open_osfhandle(PTR_TO_INT(hStdoutRd), 0);
  fd = _open_osfhandle(PTR_TO_INT(hStdinWr), 0);
  *ppOut = _fdopen(fd, "w");
  CloseHandle(hStdinRd);
  CloseHandle(hStdoutWr);
  return 0;
#else
  int pin[2], pout[2];
  *pfdIn = 0;
  *ppOut = 0;
  *pChildPid = 0;

  if( pipe(pin)<0 ){
    return 1;
  }
  if( pipe(pout)<0 ){
    close(pin[0]);
    close(pin[1]);
    return 1;
  }
  *pChildPid = fork();
  if( *pChildPid<0 ){
    close(pin[0]);
    close(pin[1]);
    close(pout[0]);
    close(pout[1]);
    *pChildPid = 0;
    return 1;
  }
  signal(SIGPIPE,SIG_IGN);
  if( *pChildPid==0 ){
    int fd;
    /* This is the child process */
    close(0);
    fd = dup(pout[0]);
    if( fd!=0 ) fossil_panic("popen() failed to open file descriptor 0");
    close(pout[0]);
    close(pout[1]);
    close(1);
    fd = dup(pin[1]);
    if( fd!=1 ) fossil_panic("popen() failed to open file descriptor 1");
    close(pin[0]);
    close(pin[1]);
    if( bDirect ){
      execl(zCmd, zCmd, (char*)0);
    }else{
      execl("/bin/sh", "/bin/sh", "-c", zCmd, (char*)0);
    }
    return 1;
  }else{
    /* This is the parent process */
    close(pin[1]);
    *pfdIn = pin[0];
    close(pout[0]);
    *ppOut = fdopen(pout[1], "w");
    return 0;
  }
#endif
}

/*
** Close the connection to a child process previously created using
** popen2().
*/
void pclose2(int fdIn, FILE *pOut, int childPid){
#ifdef _WIN32
  /* Not implemented, yet */
  close(fdIn);
  fclose(pOut);
#else
  close(fdIn);
  fclose(pOut);
  while( waitpid(0, 0, WNOHANG)>0 ) {}
#endif
}
Changes to src/pqueue.c.
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** value.  We can insert integers with each integer tied to its
** value then extract the integer with the smallest value.
**
** The way this queue is used, we never expect it to contain more
** than 2 or 3 elements, so a simple array is sufficient as the
** implementation.  This could give worst case O(N) insert times,
** but because of the nature of the problem we expect O(1) performance.
**
** Compatibility note:  Some versions of OpenSSL export a symbols
** like "pqueue_insert".  This is, technically, a bug in OpenSSL.
** We work around it here by using "pqueuex_" instead of "pqueue_".
*/
#include "config.h"
#include "pqueue.h"
#include <assert.h>


#if INTERFACE
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  } *a;
};
#endif

/*
** Initialize a PQueue structure
*/
void pqueue_init(PQueue *p){
void pqueuex_init(PQueue *p){
  memset(p, 0, sizeof(*p));
}

/*
** Destroy a PQueue.  Delete all of its content.
*/
void pqueue_clear(PQueue *p){
void pqueuex_clear(PQueue *p){
  free(p->a);
  pqueue_init(p);
  pqueuex_init(p);
}

/*
** Change the size of the queue so that it contains N slots
*/
static void pqueue_resize(PQueue *p, int N){
  p->a = realloc(p->a, sizeof(p->a[0])*N);
static void pqueuex_resize(PQueue *p, int N){
  p->a = fossil_realloc(p->a, sizeof(p->a[0])*N);
  p->sz = N;
}

/*
** Insert element e into the queue.
*/
void pqueue_insert(PQueue *p, int e, double v){
void pqueuex_insert(PQueue *p, int e, double v){
  int i, j;
  if( p->cnt+1>p->sz ){
    pqueue_resize(p, p->cnt+5);
    pqueuex_resize(p, p->cnt+5);
  }
  for(i=0; i<p->cnt; i++){
    if( p->a[i].value>v ){
      for(j=p->cnt; j>i; j--){
        p->a[j] = p->a[j-1];
      }
      break;
    }
  }
  p->a[i].id = e;
  p->a[i].value = v;
  p->cnt++;
}

/*
** Extract the first element from the queue (the element with
** the smallest value) and return its ID.  Return 0 if the queue
** is empty.
*/
int pqueue_extract(PQueue *p){
int pqueuex_extract(PQueue *p){
  int e, i;
  if( p->cnt==0 ){
    return 0;
  }
  e = p->a[0].id;
  for(i=0; i<p->cnt-1; i++){
    p->a[i] = p->a[i+1];
  }
  p->cnt--;
  return e;
}
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**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains implementions of routines for formatting output
** An implementation of printf() with extra conversion fields.
** (ex: mprintf()) and for output to the console.
*/
#include "config.h"
#include "printf.h"
#if defined(_WIN32)
#   include <io.h>
#   include <fcntl.h>
#endif
#include <time.h>

/* Two custom conversions are used to show a prefix of artifact hashes:
**
**      %!S       Prefix of a length appropriate for URLs
**      %S        Prefix of a length appropriate for human display
**
** The following macros help determine those lengths.  FOSSIL_HASH_DIGITS
** is the default number of digits to display to humans.  This value can
** be overridden using the hash-digits setting.  FOSSIL_HASH_DIGITS_URL
** is the minimum number of digits to be used in URLs.  The number used
** will always be at least 6 more than the number used for human output,
** or HNAME_MAX, whichever is least.
*/
#ifndef FOSSIL_HASH_DIGITS
# define FOSSIL_HASH_DIGITS 10       /* For %S (human display) */
#endif
#ifndef FOSSIL_HASH_DIGITS_URL
# define FOSSIL_HASH_DIGITS_URL 16   /* For %!S (embedded in URLs) */
#endif

/*
** Return the number of artifact hash digits to display.  The number is for
** human output if the bForUrl is false and is destined for a URL if
** bForUrl is false.
*/
int hash_digits(int bForUrl){
  static int nDigitHuman = 0;
  static int nDigitUrl = 0;
  if( nDigitHuman==0 ){
    nDigitHuman = db_get_int("hash-digits", FOSSIL_HASH_DIGITS);
    if( nDigitHuman < 6 ) nDigitHuman = 6;
    if( nDigitHuman > HNAME_MAX ) nDigitHuman = HNAME_MAX;
    nDigitUrl = nDigitHuman + 6;
    if( nDigitUrl < FOSSIL_HASH_DIGITS_URL ) nDigitUrl = FOSSIL_HASH_DIGITS_URL;
    if( nDigitUrl > HNAME_MAX ) nDigitUrl = HNAME_MAX;
  }
  return bForUrl ? nDigitUrl : nDigitHuman;
}

/*
** Return the number of characters in a %S output.
*/
int length_of_S_display(void){
  return hash_digits(0);
}

/*
** Conversion types fall into various categories as defined by the
** following enumeration.
*/
#define etRADIX       1 /* Integer types.  %d, %x, %o, and so forth */
#define etFLOAT       2 /* Floating point.  %f */
#define etEXP         3 /* Exponentional notation. %e and %E */
#define etEXP         3 /* Exponential notation. %e and %E */
#define etGENERIC     4 /* Floating or exponential, depending on exponent. %g */
#define etSIZE        5 /* Return number of characters processed so far. %n */
#define etSTRING      6 /* Strings. %s */
#define etDYNSTRING   7 /* Dynamically allocated strings. %z */
#define etPERCENT     8 /* Percent symbol. %% */
#define etCHARX       9 /* Characters. %c */
#define etERROR      10 /* Used to indicate no such conversion type */
/* The rest are extensions, not normally found in printf() */
#define etBLOB       11 /* Blob objects.  %b */
#define etBLOBSQL    12 /* Blob objects quoted for SQL.  %B */
#define etSQLESCAPE  13 /* Strings with '\'' doubled.  %q */
#define etSQLESCAPE2 14 /* Strings with '\'' doubled and enclosed in '',
                          NULL pointers replaced by SQL NULL.  %Q */
#define etSQLESCAPE3 15 /* Double '"' characters within an indentifier.  %w */
#define etPOINTER    15 /* The %p conversion */
#define etHTMLIZE    16 /* Make text safe for HTML */
#define etHTTPIZE    17 /* Make text safe for HTTP.  "/" encoded as %2f */
#define etURLIZE     18 /* Make text safe for HTTP.  "/" not encoded */
#define etFOSSILIZE  19 /* The fossil header encoding format. */
#define etPATH       20 /* Path type */
#define etWIKISTR    21 /* Wiki text rendered from a char* */
#define etPOINTER    16 /* The %p conversion */
#define etHTMLIZE    17 /* Make text safe for HTML */
#define etHTTPIZE    18 /* Make text safe for HTTP.  "/" encoded as %2f */
#define etURLIZE     19 /* Make text safe for HTTP.  "/" not encoded */
#define etFOSSILIZE  20 /* The fossil header encoding format. */
#define etPATH       21 /* Path type */
#define etWIKISTR    22 /* Timeline comment text rendered from a char*: %W */
#define etWIKIBLOB   22 /* Wiki text rendered from a Blob* */
#define etSTRINGID   23 /* String with length limit for a UUID prefix */
#define etSTRINGID   23 /* String with length limit for a hash prefix: %S */
#define etROOT       24 /* String value of g.zTop: %R */
#define etJSONSTR    25 /* String encoded as a JSON string literal: %j
                           Use %!j to include double-quotes around it. */
#define etSHELLESC   26 /* Escape a filename for use in a shell command: %$
                           See blob_append_escaped_arg() for details
                           "%$"  -> adds "./" prefix if necessary.
                           "%!$" -> omits the "./" prefix. */


/*
** An "etByte" is an 8-bit unsigned value.
*/
typedef unsigned char etByte;

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#define FLAG_INTERN  2     /* True if for internal use only */
#define FLAG_STRING  4     /* Allow infinity precision */


/*
** The following table is searched linearly, so it is good to put the
** most frequently used conversion types first.
**
** NB: When modifying this table is it vital that you also update the fmtchr[]
** variable to match!!!
*/
static const char aDigits[] = "0123456789ABCDEF0123456789abcdef";
static const char aPrefix[] = "-x0\000X0";
static const char fmtchr[] = "dsgzqQbBWhRtTwFSjcouxXfeEGin%p/$";
static const et_info fmtinfo[] = {
  {  'd', 10, 1, etRADIX,      0,  0 },
  {  's',  0, 4, etSTRING,     0,  0 },
  {  'g',  0, 1, etGENERIC,    30, 0 },
  {  'z',  0, 6, etDYNSTRING,  0,  0 },
  {  'q',  0, 4, etSQLESCAPE,  0,  0 },
  {  'Q',  0, 4, etSQLESCAPE2, 0,  0 },
  {  'b',  0, 2, etBLOB,       0,  0 },
  {  'B',  0, 2, etBLOBSQL,    0,  0 },
  {  'w',  0, 2, etWIKISTR,    0,  0 },
  {  'W',  0, 2, etWIKISTR,    0,  0 },
  {  'W',  0, 2, etWIKIBLOB,   0,  0 },
  {  'h',  0, 4, etHTMLIZE,    0,  0 },
  {  'R',  0, 0, etROOT,       0,  0 },
  {  't',  0, 4, etHTTPIZE,    0,  0 },  /* "/" -> "%2F" */
  {  'T',  0, 4, etURLIZE,     0,  0 },  /* "/" unchanged */
  {  'w',  0, 4, etSQLESCAPE3, 0,  0 },
  {  'F',  0, 4, etFOSSILIZE,  0,  0 },
  {  'S',  0, 4, etSTRINGID,   0,  0 },
  {  'j',  0, 0, etJSONSTR,    0,  0 },
  {  'c',  0, 0, etCHARX,      0,  0 },
  {  'o',  8, 0, etRADIX,      0,  2 },
  {  'u', 10, 0, etRADIX,      0,  0 },
  {  'x', 16, 0, etRADIX,      16, 1 },
  {  'X', 16, 0, etRADIX,      0,  4 },
  {  'f',  0, 1, etFLOAT,      0,  0 },
  {  'e',  0, 1, etEXP,        30, 0 },
  {  'E',  0, 1, etEXP,        14, 0 },
  {  'G',  0, 1, etGENERIC,    14, 0 },
  {  'i', 10, 1, etRADIX,      0,  0 },
  {  'n',  0, 0, etSIZE,       0,  0 },
  {  '%',  0, 0, etPERCENT,    0,  0 },
  {  'p', 16, 0, etPOINTER,    0,  1 },
  {  '/',  0, 0, etPATH,       0,  0 },
  {  '$',  0, 0, etSHELLESC,   0,  0 },
  {  etERROR, 0,0,0,0,0}  /* Must be last */
};
#define etNINFO  (sizeof(fmtinfo)/sizeof(fmtinfo[0]))
#define etNINFO count(fmtinfo)

/*
** Verify that the fmtchr[] and fmtinfo[] arrays are in agreement.
**
** This routine is a defense against programming errors.
*/
void fossil_printf_selfcheck(void){
  int i;
  for(i=0; fmtchr[i]; i++){
    assert( fmtchr[i]==fmtinfo[i].fmttype );
  }
}


/*
** "*val" is a double such that 0.1 <= *val < 10.0
** Return the ascii code for the leading digit of *val, then
** multiply "*val" by 10.0 to renormalize.
**
** Example:
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149
150
151
152
153



154
155
156
157
158






























159
160
161
162
163
164
165
166
167
168
169
170
171
172

173
174
175
176
177
178
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180
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182

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185
186
187
188
189
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235
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257
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260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276








277

278
279
280
281
282
283
284
285

286
287
288
289
290
291
292
293







+
+
+





+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+






-
-
-
-
-
-
-
-
+
-








-
+








/*
** Find the length of a string as long as that length does not
** exceed N bytes.  If no zero terminator is seen in the first
** N bytes then return N.  If N is negative, then this routine
** is an alias for strlen().
*/
#if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
# define StrNLen32(Z,N) (int)strnlen(Z,N)
#else
static int StrNLen32(const char *z, int N){
  int n = 0;
  while( (N-- != 0) && *(z++)!=0 ){ n++; }
  return n;
}
#endif

/*
** Return an appropriate set of flags for wiki_convert() for displaying
** comments on a timeline.  These flag settings are determined by
** configuration parameters.
**
** The altForm2 argument is true for "%!W" (with the "!" alternate-form-2
** flags) and is false for plain "%W".  The ! indicates that the text is
** to be rendered on a form rather than the timeline and that block markup
** is acceptable even if the "timeline-block-markup" setting is false.
*/
static int wiki_convert_flags(int altForm2){
  static int wikiFlags = 0;
  if( wikiFlags==0 ){
    if( altForm2 || db_get_boolean("timeline-block-markup", 0) ){
      wikiFlags = WIKI_INLINE | WIKI_NOBADLINKS;
    }else{
      wikiFlags = WIKI_INLINE | WIKI_NOBLOCK | WIKI_NOBADLINKS;
    }
    if( db_get_boolean("timeline-plaintext", 0) ){
      wikiFlags |= WIKI_LINKSONLY;
    }
    if( db_get_boolean("timeline-hard-newlines", 0) ){
      wikiFlags |= WIKI_NEWLINE;
    }
  }
  return wikiFlags;
}



/*
** The root program.  All variations call this core.
**
** INPUTS:
**   func   This is a pointer to a function taking three arguments
**            1. A pointer to anything.  Same as the "arg" parameter.
**            2. A pointer to the list of characters to be output
**               (Note, this list is NOT null terminated.)
**            3. An integer number of characters to be output.
**               (Note: This number might be zero.)
**
**   arg    This is the pointer to anything which will be passed as the
**   pBlob  This is the blob where the output will be built.
**          first argument to "func".  Use it for whatever you like.
**
**   fmt    This is the format string, as in the usual print.
**
**   ap     This is a pointer to a list of arguments.  Same as in
**          vfprint.
**
** OUTPUTS:
**          The return value is the total number of characters sent to
**          the function "func".  Returns -1 on a error.
**          the function "func".  Returns -1 on error.
**
** Note that the order in which automatic variables are declared below
** seems to make a big difference in determining how fast this beast
** will run.
*/
int vxprintf(
  Blob *pBlob,                       /* Append output to this blob */
202
203
204
205
206
207
208

209
210
211
212
213
214
215
216
217
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219
220
221
222
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224
225

226
227
228
229
230
231
232

233
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235





236
237

238
239
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241
242
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244
245
246

247
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256

257
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319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336

337
338



339
340
341
342
343


344
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347
348
349
350
351
352

353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371







+

















+





-

+
-
-
-
+
+
+
+
+
-
-
+








-
+










+







  etByte flag_blanksign;     /* True if " " flag is present */
  etByte flag_alternateform; /* True if "#" flag is present */
  etByte flag_altform2;      /* True if "!" flag is present */
  etByte flag_zeropad;       /* True if field width constant starts with zero */
  etByte flag_long;          /* True if "l" flag is present */
  etByte flag_longlong;      /* True if the "ll" flag is present */
  etByte done;               /* Loop termination flag */
  etByte cThousand;          /* Thousands separator for %d and %u */
  u64 longvalue;             /* Value for integer types */
  long double realvalue;     /* Value for real types */
  const et_info *infop;      /* Pointer to the appropriate info structure */
  char buf[etBUFSIZE];       /* Conversion buffer */
  char prefix;               /* Prefix character.  "+" or "-" or " " or '\0'. */
  etByte errorflag = 0;      /* True if an error is encountered */
  etByte xtype;              /* Conversion paradigm */
  char *zExtra;              /* Extra memory used for etTCLESCAPE conversions */
  static const char spaces[] =
   "                                                                         ";
#define etSPACESIZE (sizeof(spaces)-1)
  int  exp, e2;              /* exponent of real numbers */
  double rounder;            /* Used for rounding floating point values */
  etByte flag_dp;            /* True if decimal point should be shown */
  etByte flag_rtz;           /* True if trailing zeros should be removed */
  etByte flag_exp;           /* True to force display of the exponent */
  int nsd;                   /* Number of significant digits returned */
  char *zFmtLookup;

  count = length = 0;
  bufpt = 0;
  for(; (c=(*fmt))!=0; ++fmt){
    if( c!='%' ){
      int amt;
      bufpt = (char *)fmt;
#if HAVE_STRCHRNUL
      amt = 1;
      while( (c=(*++fmt))!='%' && c!=0 ) amt++;
      blob_append(pBlob,bufpt,amt);
      fmt = strchrnul(fmt, '%');
#else
      do{ fmt++; }while( *fmt && *fmt != '%' );
#endif
      blob_append(pBlob, bufpt, (int)(fmt - bufpt));
      count += amt;
      if( c==0 ) break;
      if( *fmt==0 ) break;
    }
    if( (c=(*++fmt))==0 ){
      errorflag = 1;
      blob_append(pBlob,"%",1);
      count++;
      break;
    }
    /* Find out what flags are present */
    flag_leftjustify = flag_plussign = flag_blanksign = 
    flag_leftjustify = flag_plussign = flag_blanksign = cThousand =
     flag_alternateform = flag_altform2 = flag_zeropad = 0;
    done = 0;
    do{
      switch( c ){
        case '-':   flag_leftjustify = 1;     break;
        case '+':   flag_plussign = 1;        break;
        case ' ':   flag_blanksign = 1;       break;
        case '#':   flag_alternateform = 1;   break;
        case '!':   flag_altform2 = 1;        break;
        case '0':   flag_zeropad = 1;         break;
        case ',':   cThousand = ',';          break;
        default:    done = 1;                 break;
      }
    }while( !done && (c=(*++fmt))!=0 );
    /* Get the field width */
    width = 0;
    if( c=='*' ){
      width = va_arg(ap,int);
302
303
304
305
306
307
308
309

310
311
312
313
314



315
316



317
318
319
320
321
322
323
410
411
412
413
414
415
416

417





418
419
420


421
422
423
424
425
426
427
428
429
430







-
+
-
-
-
-
-
+
+
+
-
-
+
+
+







      }else{
        flag_longlong = 0;
      }
    }else{
      flag_long = flag_longlong = 0;
    }
    /* Fetch the info entry for the field */
    infop = 0;
    zFmtLookup = strchr(fmtchr,c);
    xtype = etERROR;
    for(idx=0; idx<etNINFO; idx++){
      if( c==fmtinfo[idx].fmttype ){
        infop = &fmtinfo[idx];
        xtype = infop->type;
    if( zFmtLookup ){
      infop = &fmtinfo[zFmtLookup-fmtchr];
      xtype = infop->type;
        break;
      }
    }else{
      infop = 0;
      xtype = etERROR;
    }
    zExtra = 0;

    /* Limit the precision to prevent overflowing buf[] during conversion */
    if( precision>etBUFSIZE-40 && (infop->flags & FLAG_STRING)==0 ){
      precision = etBUFSIZE-40;
    }
381
382
383
384
385
386
387
388

389















390
391
392
393
394
395
396
488
489
490
491
492
493
494

495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518







-
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+







          base = infop->base;
          do{                                           /* Convert to ascii */
            *(--bufpt) = cset[longvalue%base];
            longvalue = longvalue/base;
          }while( longvalue>0 );
        }
        length = &buf[etBUFSIZE-1]-bufpt;
        for(idx=precision-length; idx>0; idx--){
        while( precision>length ){
          *(--bufpt) = '0';                             /* Zero pad */
          length++;
        }
        if( cThousand ){
          int nn = (length - 1)/3;  /* Number of "," to insert */
          int ix = (length - 1)%3 + 1;
          bufpt -= nn;
          for(idx=0; nn>0; idx++){
            bufpt[idx] = bufpt[idx+nn];
            ix--;
            if( ix==0 ){
              bufpt[++idx] = cThousand;
              nn--;
              ix = 3;
            }
          }
        }
        if( prefix ) *(--bufpt) = prefix;               /* Add sign */
        if( flag_alternateform && infop->prefix ){      /* Add "0" or "0x" */
          const char *pre;
          char x;
          pre = &aPrefix[infop->prefix];
          if( *bufpt!=pre[0] ){
543
544
545
546
547
548
549
550

551
552
553
554
555
556
557
558
559
560
561
562
563
564
565

566
567
568
569
570
571
572
573
574
575
576
577
578




579

580
581
582
583
584
585
586
587


588
589
590
591
592
593
594
665
666
667
668
669
670
671

672
673
674
675
676
677
678
679
680
681
682
683
684
685
686

687
688
689
690
691
692
693
694
695
696
697



698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720







-
+














-
+










-
-
-
+
+
+
+

+








+
+







        break;
      case etPERCENT:
        buf[0] = '%';
        bufpt = buf;
        length = 1;
        break;
      case etCHARX:
        c = buf[0] = (xtype==etCHARX ? va_arg(ap,int) : *++fmt);
        c = buf[0] = va_arg(ap,int);
        if( precision>=0 ){
          for(idx=1; idx<precision; idx++) buf[idx] = c;
          length = precision;
        }else{
          length =1;
        }
        bufpt = buf;
        break;
      case etPATH: {
        int i;
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char *e = va_arg(ap,char*);
        if( e==0 ){e="";}
        length = StrNLen32(e, limit);
        zExtra = bufpt = malloc(length+1);
        zExtra = bufpt = fossil_malloc(length+1);
        for( i=0; i<length; i++ ){
          if( e[i]=='\\' ){
            bufpt[i]='/';
          }else{
            bufpt[i]=e[i];
          }
        }
        bufpt[length]='\0';
        break;
      }
      case etSTRINGID: {
        precision = 16;
        /* Fall through */
      case etROOT: {
        bufpt = g.zTop ? g.zTop : "";
        length = (int)strlen(bufpt);
        break;
      }
      case etSTRINGID:
      case etSTRING:
      case etDYNSTRING: {
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        bufpt = va_arg(ap,char*);
        if( bufpt==0 ){
          bufpt = "";
        }else if( xtype==etDYNSTRING ){
          zExtra = bufpt;
        }else if( xtype==etSTRINGID ){
          precision = hash_digits(flag_altform2);
        }
        length = StrNLen32(bufpt, limit);
        if( precision>=0 && precision<length ) length = precision;
        break;
      }
      case etBLOB: {
        int limit = flag_alternateform ? va_arg(ap, int) : -1;
603
604
605
606
607
608
609
610

611
612
613
614
615
616
617
618
619
620
621
622
623
624

625

626
627
628

629
630
631
632
633
634

635
636
637
638
639

640
641
642
643
644
645

646
647
648

649
650

651
652
653
654
655
656
657
729
730
731
732
733
734
735

736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751

752
753
754
755
756
757
758
759
760
761

762
763
764
765
766

767

768
769
770
771

772
773
774

775
776

777
778
779
780
781
782
783
784







-
+














+
-
+



+





-
+




-
+
-




-
+


-
+

-
+







        Blob *pBlob = va_arg(ap, Blob*);
        char *zOrig = blob_buffer(pBlob);
        int i, j, n, cnt;
        n = blob_size(pBlob);
        if( limit>=0 && limit<n ) n = limit;
        for(cnt=i=0; i<n; i++){ if( zOrig[i]=='\'' ) cnt++; }
        if( n+cnt+2 > etBUFSIZE ){
          bufpt = zExtra = malloc( n + cnt + 2 );
          bufpt = zExtra = fossil_malloc( n + cnt + 2 );
        }else{
          bufpt = buf;
        }
        bufpt[0] = '\'';
        for(i=0, j=1; i<n; i++, j++){
          if( zOrig[i]=='\'' ){ bufpt[j++] = '\''; }
          bufpt[j] = zOrig[i];
        }
        bufpt[j++] = '\'';
        length = j;
        assert( length==n+cnt+2 );
        break;
      }
      case etSQLESCAPE:
      case etSQLESCAPE2:
      case etSQLESCAPE2: {
      case etSQLESCAPE3: {
        int i, j, n, ch, isnull;
        int needQuote;
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char q = ((xtype==etSQLESCAPE3)?'"':'\'');  /* Quote characters */
        char *escarg = va_arg(ap,char*);
        isnull = escarg==0;
        if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
        if( limit<0 ) limit = strlen(escarg);
        for(i=n=0; i<limit; i++){
          if( escarg[i]=='\'' )  n++;
          if( escarg[i]==q )  n++;
        }
        needQuote = !isnull && xtype==etSQLESCAPE2;
        n += i + 1 + needQuote*2;
        if( n>etBUFSIZE ){
          bufpt = zExtra = malloc( n );
          bufpt = zExtra = fossil_malloc( n );
          if( bufpt==0 ) return -1;
        }else{
          bufpt = buf;
        }
        j = 0;
        if( needQuote ) bufpt[j++] = '\'';
        if( needQuote ) bufpt[j++] = q;
        for(i=0; i<limit; i++){
          bufpt[j++] = ch = escarg[i];
          if( ch=='\'' ) bufpt[j++] = ch;
          if( ch==q ) bufpt[j++] = ch;
        }
        if( needQuote ) bufpt[j++] = '\'';
        if( needQuote ) bufpt[j++] = q;
        bufpt[j] = 0;
        length = j;
        if( precision>=0 && precision<length ) length = precision;
        break;
      }
      case etHTMLIZE: {
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
684
685
686
687
688
689
690














691
692
693
694
695
696
697

698
699
700
701
702
703
704



705
706
707
708
709
710
711
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837

838
839
840
841
842



843
844
845
846
847
848
849
850
851
852







+
+
+
+
+
+
+
+
+
+
+
+
+
+






-
+




-
-
-
+
+
+







        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char *zMem = va_arg(ap,char*);
        if( zMem==0 ) zMem = "";
        zExtra = bufpt = fossilize(zMem, limit);
        length = strlen(bufpt);
        if( precision>=0 && precision<length ) length = precision;
        break;
      }
      case etJSONSTR: {
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char *zMem = va_arg(ap,char*);
        if( limit!=0 ){
          /* Ignore the limit flag, if set, for JSON string
          ** output. This block exists to squelch the associated
          ** "unused variable" compiler warning. */
        }
        if( zMem==0 ) zMem = "";
        zExtra = bufpt =
          encode_json_string_literal(zMem, flag_altform2, &length);
        if( precision>=0 && precision<length ) length = precision;
        break;
      }
      case etWIKISTR: {
        int limit = flag_alternateform ? va_arg(ap,int) : -1;
        char *zWiki = va_arg(ap, char*);
        Blob wiki;
        blob_init(&wiki, zWiki, limit);
        wiki_convert(&wiki, pBlob, WIKI_INLINE);
        wiki_convert(&wiki, pBlob, wiki_convert_flags(flag_altform2));
        blob_reset(&wiki);
        length = width = 0;
        break;
      }
      case etWIKIBLOB: {
        Blob *pWiki = va_arg(ap, Blob*);
        wiki_convert(pWiki, pBlob, WIKI_INLINE);
      case etSHELLESC: {
        char *zArg = va_arg(ap, char*);
        blob_append_escaped_arg(pBlob, zArg, !flag_altform2);
        length = width = 0;
        break;
      }
      case etERROR:
        buf[0] = '%';
        buf[1] = c;
        errorflag = 0;
721
722
723
724
725
726
727
728

729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744

745
746
747
748
749
750
751
752

753
754
755
756
757
758
759

760
761
762
763
764
765
766
862
863
864
865
866
867
868

869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884

885
886
887
888
889
890
891
892

893
894
895
896
897
898
899

900
901
902
903
904
905
906
907







-
+















-
+







-
+






-
+







    ** the output.
    */
    if( !flag_leftjustify ){
      register int nspace;
      nspace = width-length;
      if( nspace>0 ){
        count += nspace;
        while( nspace>=etSPACESIZE ){
        while( nspace>=(int)etSPACESIZE ){
          blob_append(pBlob,spaces,etSPACESIZE);
          nspace -= etSPACESIZE;
        }
        if( nspace>0 ) blob_append(pBlob,spaces,nspace);
      }
    }
    if( length>0 ){
      blob_append(pBlob,bufpt,length);
      count += length;
    }
    if( flag_leftjustify ){
      register int nspace;
      nspace = width-length;
      if( nspace>0 ){
        count += nspace;
        while( nspace>=etSPACESIZE ){
        while( nspace>=(int)etSPACESIZE ){
          blob_append(pBlob,spaces,etSPACESIZE);
          nspace -= etSPACESIZE;
        }
        if( nspace>0 ) blob_append(pBlob,spaces,nspace);
      }
    }
    if( zExtra ){
      free(zExtra);
      fossil_free(zExtra);
    }
  }/* End for loop over the format string */
  return errorflag ? -1 : count;
} /* End of function */

/*
** Print into memory obtained from malloc().
** Print into memory obtained from fossil_malloc().
*/
char *mprintf(const char *zFormat, ...){
  va_list ap;
  char *z;
  va_start(ap,zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
796
797
798
799
800
801
802

























































803
804
805
806
807
808
809
810
811
812
813
814






815



816
817





























































































































































































































































937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
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  g.iErrPriority = iPriority;
}
void fossil_error_reset(void){
  free(g.zErrMsg);
  g.zErrMsg = 0;
  g.iErrPriority = 0;
}

/* True if the last character standard output cursor is setting at
** the beginning of a blank link.  False if a \r has been to move the
** cursor to the beginning of the line or if not at the beginning of
** a line.
** was a \n
*/
static int stdoutAtBOL = 1;

/*
** Write to standard output or standard error.
**
** On windows, transform the output into the current terminal encoding
** if the output is going to the screen.  If output is redirected into
** a file, no translation occurs. Switch output mode to binary to
** properly process line-endings, make sure to switch the mode back to
** text when done.
** No translation ever occurs on unix.
*/
void fossil_puts(const char *z, int toStdErr, int n){
  FILE* out = (toStdErr ? stderr : stdout);
  if( n==0 ) return;
  assert( toStdErr==0 || toStdErr==1 );
  if( toStdErr==0 ) stdoutAtBOL = (z[n-1]=='\n');
#if defined(_WIN32)
  if( fossil_utf8_to_console(z, n, toStdErr) >= 0 ){
    return;
  }
  fflush(out);
  _setmode(_fileno(out), _O_BINARY);
#endif
  fwrite(z, 1, n, out);
#if defined(_WIN32)
  fflush(out);
  _setmode(_fileno(out), _O_TEXT);
#endif
}

/*
** Force the standard output cursor to move to the beginning
** of a line, if it is not there already.
*/
int fossil_force_newline(void){
  if( g.cgiOutput==0 && stdoutAtBOL==0 ){
    fossil_puts("\n", 0, 1);
    return 1;
  }
  return 0;
}

/*
** Indicate that the cursor has moved to the start of a line by means
** other than writing to standard output.
*/
void fossil_new_line_started(void){
  stdoutAtBOL = 1;
}

/*
** Write output for user consumption.  If g.cgiOutput is enabled, then
** send the output as part of the CGI reply.  If g.cgiOutput is false,
** then write on standard output.
*/
void fossil_print(const char *zFormat, ...){
  va_list ap;
  va_start(ap, zFormat);
  if( g.cgiOutput ){
    cgi_vprintf(zFormat, ap);
  }else{
    vxprintf(0, zFormat, ap);
  }
  va_end(ap);
}
void fossil_vprint(const char *zFormat, va_list ap){
  if( g.cgiOutput ){
    vprintf(zFormat, ap);
    cgi_vprintf(zFormat, ap);
  }else{
    vxprintf(0, zFormat, ap);
  }
}

/*
** Print a trace message on standard error.
*/
void fossil_trace(const char *zFormat, ...){
  va_list ap;
  Blob b;
  va_start(ap, zFormat);
  b = empty_blob;
  vxprintf(&b, zFormat, ap);
  fossil_puts(blob_buffer(&b), 1, blob_size(&b));
  blob_reset(&b);
  va_end(ap);
}

/*
** Write a message to the error log, if the error log filename is
** defined.
**
** If the message format begins with 'X', then omit that X from the
** beginning of the message and add much more CGI context.
*/
void fossil_errorlog(const char *zFormat, ...){
  struct tm *pNow;
  time_t now;
  FILE *out;
  const char *z;
  int i;
  int bDetail = 0;
  va_list ap;
  static const char *const azEnv[] = { "HTTP_HOST", "HTTP_REFERER",
      "HTTP_USER_AGENT",
      "PATH_INFO", "QUERY_STRING", "REMOTE_ADDR", "REQUEST_METHOD",
      "REQUEST_URI", "SCRIPT_NAME" };
  if( g.zErrlog==0 ) return;
  if( g.zErrlog[0]=='-' && g.zErrlog[1]==0 ){
    out = stderr;
  }else{
    out = fossil_fopen(g.zErrlog, "a");
    if( out==0 ) return;
  }
  now = time(0);
  pNow = gmtime(&now);
  fprintf(out, "------------- %04d-%02d-%02d %02d:%02d:%02d UTC ------------\n",
          pNow->tm_year+1900, pNow->tm_mon+1, pNow->tm_mday,
          pNow->tm_hour, pNow->tm_min, pNow->tm_sec);
  va_start(ap, zFormat);
  if( zFormat[0]=='X' ){
    bDetail = 1;
    zFormat++;
  }
  vfprintf(out, zFormat, ap);
  fprintf(out, "\n");
  va_end(ap);
  if( g.zPhase!=0 ) fprintf(out, "while in %s\n", g.zPhase);
  if( bDetail ){
    cgi_print_all(1,3,out);
  }else{
    for(i=0; i<count(azEnv); i++){
      char *p;
      if( (p = fossil_getenv(azEnv[i]))!=0 && p[0]!=0 ){
        fprintf(out, "%s=%s\n", azEnv[i], p);
        fossil_path_free(p);
      }else if( (z = P(azEnv[i]))!=0 && z[0]!=0 ){
        fprintf(out, "%s=%s\n", azEnv[i], z);
      }
    }
  }
  fclose(out);
}

/*
** The following variable becomes true while processing a fatal error
** or a panic.  If additional "recursive-fatal" errors occur while
** shutting down, the recursive errors are silently ignored.
*/
static int mainInFatalError = 0;

/*
** Write error message output
*/
static int fossil_print_error(int rc, const char *z){
#ifdef FOSSIL_ENABLE_JSON
  if( g.json.isJsonMode!=0 ){
    /*
    ** Avoid calling into the JSON support subsystem if it
    ** has not yet been initialized, e.g. early SQLite log
    ** messages, etc.
    */
    if( !json_is_bootstrapped_early() ) json_bootstrap_early();
    json_err( 0, z, 1 );
    if( g.isHTTP && !g.json.preserveRc ){
      rc = 0 /* avoid HTTP 500 */;
    }
    if( g.cgiOutput==1 ){
      g.cgiOutput = 2;
      cgi_reply();
    }
  }
  else
#endif
  if( g.cgiOutput==1 && g.db ){
    g.cgiOutput = 2;
    cgi_reset_content();
    cgi_set_content_type("text/html");
    style_set_current_feature("error");
    style_header("Bad Request");
    etag_cancel();
    @ <p class="generalError">%h(z)</p>
    cgi_set_status(400, "Bad Request");
    style_finish_page();
    cgi_reply();
  }else if( !g.fQuiet ){
    fossil_force_newline();
    fossil_trace("%s\n", z);
  }
  return rc;
}

/*
** Print an error message, rollback all databases, and quit.  These
** routines never return and produce a non-zero process exit status.
**
** The main difference between fossil_fatal() and fossil_panic() is that
** fossil_panic() makes an entry in the error log whereas fossil_fatal()
** does not. On POSIX platforms, if there is not an error log, then both
** routines work similarly with respect to user-visible effects.  Hence,
** the routines are interchangable for commands and only act differently
** when processing web pages. On the Windows platform, fossil_panic()
** also displays a pop-up stating that an error has occured and allowing
** just-in-time debugging to commence. On all platforms, fossil_panic()
** ends execution with a SIGABRT signal, bypassing atexit processing.
** This signal can also produce a core dump on POSIX platforms.
**
** Use fossil_fatal() for malformed inputs that should be reported back
** to the user, but which do not represent a configuration problem or bug.
**
** Use fossil_panic() for any kind of error that should be brought to the
** attention of the system administrator or Fossil developers. It should
** be avoided for ordinary usage, parameter, OOM and I/O errors.
*/
NORETURN void fossil_panic(const char *zFormat, ...){
  va_list ap;
  int rc = 1;
  char z[1000];
  static int once = 0;

  if( once ) exit(1);
  once = 1;
  mainInFatalError = 1;
  /* db_force_rollback(); */
  va_start(ap, zFormat);
  sqlite3_vsnprintf(sizeof(z),z,zFormat, ap);
  va_end(ap);
  if( g.fAnyTrace ){
    fprintf(stderr, "/***** panic on %d *****/\n", getpid());
  }
  fossil_errorlog("panic: %s", z);
  rc = fossil_print_error(rc, z);
  abort();
  exit(rc);
}
NORETURN void fossil_fatal(const char *zFormat, ...){
  static int once = 0;
  va_list ap;
  char *z;
  int rc = 1;
  if( once ) exit(1);
  once = 1;
  mainInFatalError = 1;
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
  rc = fossil_print_error(rc, z);
  fossil_free(z);
  db_force_rollback();
  fossil_exit(rc);
}

/* This routine works like fossil_fatal() except that if called
** recursively, the recursive call is a no-op.
**
** Use this in places where an error might occur while doing
** fatal error shutdown processing.  Unlike fossil_panic() and
** fossil_fatal() which never return, this routine might return if
** the fatal error handing is already in process.  The caller must
** be prepared for this routine to return.
*/
void fossil_fatal_recursive(const char *zFormat, ...){
  char *z;
  va_list ap;
  int rc = 1;
  if( mainInFatalError ) return;
  mainInFatalError = 1;
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
  rc = fossil_print_error(rc, z);
  db_force_rollback();
  fossil_exit(rc);
}


/* Print a warning message.
**
** Unlike fossil_fatal() and fossil_panic(), this routine does return
** and processing attempts to continue.  A message is written to the
** error log, however, so this routine should only be used for situations
** that require administrator or developer attention.  Minor problems
** in user inputs should not use this routine.
*/
void fossil_warning(const char *zFormat, ...){
  char *z;
  va_list ap;
  va_start(ap, zFormat);
  z = vmprintf(zFormat, ap);
  va_end(ap);
  fossil_errorlog("warning: %s", z);
#ifdef FOSSIL_ENABLE_JSON
  if( g.json.isJsonMode!=0 ){
    /*
    ** Avoid calling into the JSON support subsystem if it
    ** has not yet been initialized, e.g. early SQLite log
    ** messages, etc.
    */
    if( !json_is_bootstrapped_early() ) json_bootstrap_early();
    json_warn( FSL_JSON_W_UNKNOWN, "%s", z );
  }else
#endif
  {
    if( g.cgiOutput==1 ){
      etag_cancel();
      cgi_printf("<p class=\"generalError\">\n%h\n</p>\n", z);
    }else{
      fossil_force_newline();
      fossil_trace("%s\n", z);
    }
  }
  free(z);
}

/*
** Turn off any LF to CRLF translation on the stream given as an
** argument.  This is a no-op on unix but is necessary on windows.
*/
void fossil_binary_mode(FILE *p){
#if defined(_WIN32)
  _setmode(_fileno(p), _O_BINARY);
#endif
#ifdef __EMX__     /* OS/2 */
  setmode(fossil_fileno(p), O_BINARY);
#endif
}
Added src/publish.c.






















































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement the "publish" and
** "unpublished" commands.
*/
#include "config.h"
#include "publish.h"
#include <assert.h>

/*
** COMMAND: unpublished*
**
** Usage: %fossil unpublished ?OPTIONS?
**
** Show a list of unpublished or "private" artifacts.  Unpublished artifacts
** will never push and hence will not be shared with collaborators.
**
** By default, this command only shows unpublished check-ins.  To show
** all unpublished artifacts, use the --all command-line option.
**
** Options:
**     --all                   Show all artifacts, not just check-ins
*/
void unpublished_cmd(void){
  int bAll = find_option("all",0,0)!=0;

  db_find_and_open_repository(0,0);
  verify_all_options();
  if( bAll ){
    describe_artifacts_to_stdout("IN private", 0);
  }else{
    describe_artifacts_to_stdout(
      "IN (SELECT rid FROM private CROSS JOIN event"
                   " WHERE private.rid=event.objid"
                   "   AND event.type='ci')", 0);
  }
}

/*
** COMMAND: publish*
**
** Usage: %fossil publish ?--only? TAGS...
**
** Cause artifacts identified by TAGS... to be published (made non-private).
** This can be used (for example) to convert a private branch into a public
** branch, or to publish a bundle that was imported privately.
**
** If any of TAGS names a branch, then all check-ins on the most recent
** instance of that branch are included, not just the most recent check-in.
**
** If any of TAGS name check-ins then all files and tags associated with
** those check-ins are also published automatically.  Except if the --only
** option is used, then only the specific artifacts identified by TAGS
** are published.
**
** If a TAG is already public, this command is a harmless no-op.
*/
void publish_cmd(void){
  int bOnly = find_option("only",0,0)!=0;
  int bTest = find_option("test",0,0)!=0;  /* Undocumented --test option */
  int bExclusive = find_option("exclusive",0,0)!=0;  /* undocumented */
  int i;

  db_find_and_open_repository(0,0);
  verify_all_options();
  if( g.argc<3 ) usage("?--only? TAGS...");
  db_begin_transaction();
  db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY);");
  for(i=2; i<g.argc; i++){
    int rid = name_to_rid(g.argv[i]);
    if( db_exists("SELECT 1 FROM tagxref"
                  " WHERE rid=%d AND tagid=%d"
                  "   AND tagtype>0 AND value=%Q",
                  rid,TAG_BRANCH,g.argv[i]) ){
      rid = start_of_branch(rid, 1);
      compute_descendants(rid, 1000000000);
    }else{
      db_multi_exec("INSERT OR IGNORE INTO ok VALUES(%d)", rid);
    }
  }
  if( !bOnly ){
    find_checkin_associates("ok", bExclusive);
  }
  if( bTest ){
    /* If the --test option is used, then do not actually publish any
    ** artifacts.  Instead, just list the artifact information on standard
    ** output.  The --test option is useful for verifying correct operation
    ** of the logic that figures out which artifacts to publish, such as
    ** the find_checkin_associates() routine
    */
    describe_artifacts_to_stdout("IN ok", 0);
  }else{
    /* Standard behavior is simply to remove the published documents from
    ** the PRIVATE table */
    db_multi_exec(
      "DELETE FROM ok WHERE rid NOT IN private;"
      "DELETE FROM private WHERE rid IN ok;"
      "INSERT OR IGNORE INTO unsent SELECT rid FROM ok;"
      "INSERT OR IGNORE INTO unclustered SELECT rid FROM ok;"
    );
  }
  db_end_transaction(0);
}
Added src/purge.c.






















































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement the "purge" command and
** related functionality for removing check-ins from a repository.  It also
** manages the graveyard of purged content.
*/
#include "config.h"
#include "purge.h"
#include <assert.h>

/*
** SQL code used to initialize the schema of the graveyard.
**
** The purgeevent table contains one entry for each purge event.  For each
** purge event, multiple artifacts might have been removed.  Each removed
** artifact is stored as an entry in the purgeitem table.
**
** The purgeevent and purgeitem tables are not synced, even by the
** "fossil config" command.  They exist only as a backup in case of a
** mistaken purge or for content recovery in case there is a bug in the
** purge command.
*/
static const char zPurgeInit[] =
@ CREATE TABLE IF NOT EXISTS "%w".purgeevent(
@   peid INTEGER PRIMARY KEY,  -- Unique ID for the purge event
@   ctime DATETIME,            -- When purge occurred.  Seconds since 1970.
@   pnotes TEXT                -- Human-readable notes about the purge event
@ );
@ CREATE TABLE IF NOT EXISTS "%w".purgeitem(
@   piid INTEGER PRIMARY KEY,  -- ID for the purge item
@   peid INTEGER REFERENCES purgeevent ON DELETE CASCADE, -- Purge event
@   orid INTEGER,              -- Original RID before purged
@   uuid TEXT NOT NULL,        -- hash of the purged artifact
@   srcid INTEGER,             -- Basis purgeitem for delta compression
@   isPrivate BOOLEAN,         -- True if artifact was originally private
@   sz INT NOT NULL,           -- Uncompressed size of the purged artifact
@   desc TEXT,                 -- Brief description of this artifact
@   data BLOB                  -- Compressed artifact content
@ );
;

/*
** Flags for the purge_artifact_list() function.
*/
#if INTERFACE
#define PURGE_MOVETO_GRAVEYARD  0x0001    /* Move artifacts in graveyard */
#define PURGE_EXPLAIN_ONLY      0x0002    /* Show what would have happened */
#define PURGE_PRINT_SUMMARY     0x0004    /* Print a summary report at end */
#endif

/*
** This routine purges multiple artifacts from the repository, transfering
** those artifacts into the PURGEITEM table.
**
** Prior to invoking this routine, the caller must create a (TEMP) table
** named zTab that contains the RID of every artifact to be purged.
**
** This routine does the following:
**
**    (1) Create the purgeevent and purgeitem tables, if required
**    (2) Create a new purgeevent
**    (3) Make sure no DELTA table entries depend on purged artifacts
**    (4) Create new purgeitem entries for each purged artifact
**    (5) Remove purged artifacts from the BLOB table
**    (6) Remove references to purged artifacts in the following tables:
**         (a) EVENT
**         (b) PRIVATE
**         (c) MLINK
**         (d) PLINK
**         (e) LEAF
**         (f) UNCLUSTERED
**         (g) UNSENT
**         (h) BACKLINK
**         (i) ATTACHMENT
**         (j) TICKETCHNG
**    (7) If any ticket artifacts were removed (6j) then rebuild the
**        corresponding ticket entries.  Possibly remove entries from
**        the ticket table.
**
** Steps 1-4 (saving the purged artifacts into the graveyard) are only
** undertaken if the moveToGraveyard flag is true.
*/
int purge_artifact_list(
  const char *zTab,       /* TEMP table containing list of RIDS to be purged */
  const char *zNote,      /* Text of the purgeevent.pnotes field */
  unsigned purgeFlags     /* zero or more PURGE_* flags */
){
  int peid = 0;                 /* New purgeevent ID */
  Stmt q;                       /* General-use prepared statement */
  char *z;

  assert( g.repositoryOpen );   /* Main database must already be open */
  db_begin_transaction();
  z = sqlite3_mprintf("IN \"%w\"", zTab);
  describe_artifacts(z);
  sqlite3_free(z);
  describe_artifacts_to_stdout(0, 0);

  /* The explain-only flags causes this routine to list the artifacts
  ** that would have been purged but to not actually make any changes
  ** to the repository.
  */
  if( purgeFlags & PURGE_EXPLAIN_ONLY ){
    db_end_transaction(0);
    return 0;
  }

  /* Make sure we are not removing a manifest that is the baseline of some
  ** manifest that is being left behind.  This step is not strictly necessary.
  ** is is just a safety check. */
  if( purge_baseline_out_from_under_delta(zTab) ){
    fossil_panic("attempt to purge a baseline manifest without also purging "
                 "all of its deltas");
  }

  /* Make sure that no delta that is left behind requires a purged artifact
  ** as its basis.  If such artifacts exist, go ahead and undelta them now.
  */
  db_prepare(&q, "SELECT rid FROM delta WHERE srcid IN \"%w\""
                 " AND rid NOT IN \"%w\"", zTab, zTab);
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    content_undelta(rid);
    verify_before_commit(rid);
  }
  db_finalize(&q);

  /* Construct the graveyard and copy the artifacts to be purged into the
  ** graveyard */
  if( purgeFlags & PURGE_MOVETO_GRAVEYARD ){
    db_multi_exec(zPurgeInit /*works-like:"%w%w"*/,
                  "repository", "repository");
    db_multi_exec(
      "INSERT INTO purgeevent(ctime,pnotes) VALUES(now(),%Q)", zNote
    );
    peid = db_last_insert_rowid();
    db_prepare(&q, "SELECT rid FROM delta WHERE rid IN \"%w\""
                   " AND srcid NOT IN \"%w\"", zTab, zTab);
    while( db_step(&q)==SQLITE_ROW ){
      int rid = db_column_int(&q, 0);
      content_undelta(rid);
    }
    db_finalize(&q);
    db_multi_exec(
      "INSERT INTO purgeitem(peid,orid,uuid,sz,isPrivate,desc,data)"
      "  SELECT %d, rid, uuid, size,"
      "    EXISTS(SELECT 1 FROM private WHERE private.rid=blob.rid),"
      "    (SELECT summary FROM description WHERE rid=blob.rid),"
      "    content"
      "    FROM blob WHERE rid IN \"%w\"",
      peid, zTab
    );
    db_multi_exec(
      "UPDATE purgeitem"
      "   SET srcid=(SELECT piid FROM purgeitem px, delta"
                    " WHERE px.orid=delta.srcid"
                    "   AND delta.rid=purgeitem.orid)"
      " WHERE peid=%d",
      peid
    );
  }

  /* Remove the artifacts being purged.  Also remove all references to those
  ** artifacts from the secondary tables. */
  db_multi_exec("DELETE FROM blob WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM delta WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM delta WHERE srcid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM event WHERE objid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM private WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM mlink WHERE mid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM plink WHERE pid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM plink WHERE cid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM leaf WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM phantom WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM unclustered WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM unsent WHERE rid IN \"%w\"", zTab);
  db_multi_exec("DELETE FROM tagxref"
                " WHERE rid IN \"%w\""
                "    OR srcid IN \"%w\""
                "    OR origid IN \"%w\"", zTab, zTab, zTab);
  db_multi_exec("DELETE FROM backlink WHERE srctype=0 AND srcid IN \"%w\"",
                zTab);
  db_multi_exec(
    "CREATE TEMP TABLE \"%w_tickets\" AS"
    " SELECT DISTINCT tkt_uuid FROM ticket WHERE tkt_id IN"
    "    (SELECT tkt_id FROM ticketchng WHERE tkt_rid IN \"%w\")",
    zTab, zTab);
  db_multi_exec("DELETE FROM ticketchng WHERE tkt_rid IN \"%w\"", zTab);
  db_prepare(&q, "SELECT tkt_uuid FROM \"%w_tickets\"", zTab);
  while( db_step(&q)==SQLITE_ROW ){
    ticket_rebuild_entry(db_column_text(&q, 0));
  }
  db_finalize(&q);
  /* db_multi_exec("DROP TABLE \"%w_tickets\"", zTab); */

  /* Mission accomplished */
  db_end_transaction(0);

  if( purgeFlags & PURGE_PRINT_SUMMARY ){
    fossil_print("%d artifacts purged\n",
                  db_int(0, "SELECT count(*) FROM \"%w\";", zTab));
    fossil_print("undoable using \"%s purge undo %d\".\n",
                  g.nameOfExe, peid);
  }
  return peid;
}

/*
** The TEMP table named zTab contains RIDs for a set of check-ins.
**
** Check to see if any check-in in zTab is a baseline manifest for some
** delta manifest that is not in zTab.  Return true if zTab contains a
** baseline for a delta that is not in zTab.
**
** This is a database integrity preservation check.  The check-ins in zTab
** are about to be deleted or otherwise made inaccessible.  This routine
** is checking to ensure that purging the check-ins in zTab will not delete
** a baseline manifest out from under a delta.
*/
int purge_baseline_out_from_under_delta(const char *zTab){
  if( !db_table_has_column("repository","plink","baseid") ){
    /* Skip this check if the current database is an older schema that
    ** does not contain the PLINK.BASEID field. */
    return 0;
  }else{
    return db_int(0,
      "SELECT 1 FROM plink WHERE baseid IN \"%w\" AND cid NOT IN \"%w\"",
      zTab, zTab);
  }
}


/*
** The TEMP table named zTab contains the RIDs for a set of check-in
** artifacts.  Expand this set (by adding new entries to zTab) to include
** all other artifacts that are used by the check-ins in
** the original list.
**
** If the bExclusive flag is true, then the set is only expanded by
** artifacts that are used exclusively by the check-ins in the set.
** When bExclusive is false, then all artifacts used by the check-ins
** are added even if those artifacts are also used by other check-ins
** not in the set.
**
** The "fossil publish" command with the (undocumented) --test and
** --exclusive options can be used for interactiving testing of this
** function.
*/
void find_checkin_associates(const char *zTab, int bExclusive){
  db_begin_transaction();

  /* Compute the set of files that need to be added to zTab */
  db_multi_exec("CREATE TEMP TABLE \"%w_files\"(fid INTEGER PRIMARY KEY)",zTab);
  db_multi_exec(
    "INSERT OR IGNORE INTO \"%w_files\"(fid)"
    "  SELECT fid FROM mlink WHERE fid!=0 AND mid IN \"%w\"",
    zTab, zTab
  );
  if( bExclusive ){
    /* But take out all files that are referenced by check-ins not in zTab */
    db_multi_exec(
      "DELETE FROM \"%w_files\""
      " WHERE fid IN (SELECT fid FROM mlink"
                     " WHERE fid IN \"%w_files\""
                     "   AND mid NOT IN \"%w\")",
      zTab, zTab, zTab
    );
  }

  /* Compute the set of tags that need to be added to zTag */
  db_multi_exec("CREATE TEMP TABLE \"%w_tags\"(tid INTEGER PRIMARY KEY)",zTab);
  db_multi_exec(
    "INSERT OR IGNORE INTO \"%w_tags\"(tid)"
    "  SELECT DISTINCT srcid FROM tagxref WHERE rid in \"%w\" AND srcid!=0",
    zTab, zTab
  );
  if( bExclusive ){
    /* But take out tags that references some check-ins in zTab and other
    ** check-ins not in zTab.  The current Fossil implementation never creates
    ** such tags, so the following should usually be a no-op.  But the file
    ** format specification allows such tags, so we should check for them.
    */
    db_multi_exec(
      "DELETE FROM \"%w_tags\""
      " WHERE tid IN (SELECT srcid FROM tagxref"
                     " WHERE srcid IN \"%w_tags\""
                     "   AND rid NOT IN \"%w\")",
      zTab, zTab, zTab
    );
  }

  /* Transfer the extra artifacts into zTab */
  db_multi_exec(
    "INSERT OR IGNORE INTO \"%w\" SELECT fid FROM \"%w_files\";"
    "INSERT OR IGNORE INTO \"%w\" SELECT tid FROM \"%w_tags\";"
    "DROP TABLE \"%w_files\";"
    "DROP TABLE \"%w_tags\";",
    zTab, zTab, zTab, zTab, zTab, zTab
  );

  db_end_transaction(0);
}

/*
** Display the content of a single purge event.
*/
static void purge_list_event_content(int peid){
  Stmt q;
  sqlite3_int64 sz = 0;
  db_prepare(&q, "SELECT piid, substr(uuid,1,16), srcid, isPrivate,"
                 "       length(data), desc"
                 " FROM purgeitem WHERE peid=%d", peid);
  while( db_step(&q)==SQLITE_ROW ){
    fossil_print("     %5d %s %4s %c %10d %s\n",
       db_column_int(&q,0),
       db_column_text(&q,1),
       db_column_text(&q,2),
       db_column_int(&q,3) ? 'P' : ' ',
       db_column_int(&q,4),
       db_column_text(&q,5));
    sz += db_column_int(&q,4);
  }
  db_finalize(&q);
  fossil_print("%.11c%16s%.8c%10lld\n", ' ', "Total:", ' ', sz);
}

/*
** Extract the content for purgeitem number piid into a Blob.  Return
** the number of errors.
*/
static int purge_extract_item(
  int piid,            /* ID of the item to extract */
  Blob *pOut           /* Write the content into this blob */
){
  Stmt q;
  int srcid;
  Blob h1, x;
  static Bag busy;

  db_prepare(&q, "SELECT uuid, srcid, data FROM purgeitem"
                 " WHERE piid=%d", piid);
  if( db_step(&q)!=SQLITE_ROW ){
    db_finalize(&q);
    fossil_fatal("missing purge-item %d", piid);
  }
  if( bag_find(&busy, piid) ) return 1;
  srcid = db_column_int(&q, 1);
  blob_zero(pOut);
  blob_zero(&x);
  db_column_blob(&q, 2, &x);
  blob_uncompress(&x, pOut);
  blob_reset(&x);
  if( srcid>0 ){
    Blob baseline, out;
    bag_insert(&busy, piid);
    purge_extract_item(srcid, &baseline);
    blob_zero(&out);
    blob_delta_apply(&baseline, pOut, &out);
    blob_reset(pOut);
    *pOut = out;
    blob_reset(&baseline);
  }
  bag_remove(&busy, piid);
  blob_zero(&h1);
  db_column_blob(&q, 0, &h1);
  if( hname_verify_hash(pOut, blob_buffer(&h1), blob_size(&h1))==0 ){
    fossil_fatal("incorrect artifact hash on %b", &h1);
  }
  blob_reset(&h1);
  db_finalize(&q);
  return 0;
}

/*
** There is a TEMP table ix(piid,srcid) containing a set of purgeitems
** that need to be transferred to the BLOB table.  This routine does
** all items that have srcid=iSrc.  The pBasis blob holds the content
** of the source document if iSrc>0.
*/
static void purge_item_resurrect(int iSrc, Blob *pBasis){
  Stmt q;
  static Bag busy;
  assert( pBasis!=0 || iSrc==0 );
  if( iSrc>0 ){
    if( bag_find(&busy, iSrc) ){
      fossil_fatal("delta loop while uncompressing purged artifacts");
    }
    bag_insert(&busy, iSrc);
  }
  db_prepare(&q,
     "SELECT uuid, data, isPrivate, ix.piid"
     "  FROM ix, purgeitem"
     " WHERE ix.srcid=%d"
     "   AND ix.piid=purgeitem.piid;",
     iSrc
  );
  while( db_step(&q)==SQLITE_ROW ){
    Blob h1, c1, c2;
    int isPriv, rid;
    blob_zero(&h1);
    db_column_blob(&q, 0, &h1);
    blob_zero(&c1);
    db_column_blob(&q, 1, &c1);
    blob_uncompress(&c1, &c1);
    blob_zero(&c2);
    if( pBasis ){
      blob_delta_apply(pBasis, &c1, &c2);
      blob_reset(&c1);
    }else{
      c2 = c1;
    }
    if( hname_verify_hash(&c2, blob_buffer(&h1), blob_size(&h1))==0 ){
      fossil_fatal("incorrect hash on %b", &h1);
    }
    isPriv = db_column_int(&q, 2);
    rid = content_put_ex(&c2, blob_str(&h1), 0, 0, isPriv);
    if( rid==0 ){
      fossil_fatal("%s", g.zErrMsg);
    }else{
      if( !isPriv ) content_make_public(rid);
      content_get(rid, &c1);
      manifest_crosslink(rid, &c1, MC_NO_ERRORS);
    }
    purge_item_resurrect(db_column_int(&q,3), &c2);
    blob_reset(&c2);
  }
  db_finalize(&q);
  if( iSrc>0 ) bag_remove(&busy, iSrc);
}

/*
** COMMAND: purge*
**
** The purge command removes content from a repository and stores that content
** in a "graveyard".  The graveyard exists so that content can be recovered
** using the "fossil purge undo" command.  The "fossil purge obliterate"
** command empties the graveyard, making the content unrecoverable.
**
** WARNING: This command can potentially destroy historical data and
** leave your repository in a goofy state. Know what you are doing!
** Make a backup of your repository before using this command!
**
** FURTHER WARNING: This command is a work-in-progress and may yet
** contain bugs.
**
** > fossil purge artifacts HASH... ?OPTIONS?
**
**      Move arbitrary artifacts identified by the HASH list into the
**      graveyard.
**
** > fossil purge cat HASH...
**
**      Write the content of one or more artifacts in the graveyard onto
**      standard output.
**
** > fossil purge checkins TAGS... ?OPTIONS?
**
**      Move the check-ins or branches identified by TAGS and all of
**      their descendants out of the repository and into the graveyard.
**      If TAGS includes a branch name then it means all the check-ins
**      on the most recent occurrence of that branch.
**
** > fossil purge files NAME ... ?OPTIONS?
**
**      Move all instances of files called NAME into the graveyard.
**      NAME should be the name of the file relative to the root of the
**      repository.  If NAME is a directory, then all files within that
**      directory are moved.
**
** > fossil purge list|ls ?-l?
**
**      Show the graveyard of prior purges.  The -l option gives more
**      detail in the output.
**
** > fossil purge obliterate ID... ?--force?
**
**      Remove one or more purge events from the graveyard.  Once a purge
**      event is obliterated, it can no longer be undone.  The --force
**      option suppresses the confirmation prompt.
**
** > fossil purge tickets NAME ... ?OPTIONS?
**
**      TBD...
**
** > fossil purge undo ID
**
**      Restore the content previously removed by purge ID.
**
** > fossil purge wiki NAME ... ?OPTIONS?
**
**      TBD...
**
** COMMON OPTIONS:
**
**   --explain         Make no changes, but show what would happen
**   --dry-run         An alias for --explain
*/
void purge_cmd(void){
  int purgeFlags = PURGE_MOVETO_GRAVEYARD | PURGE_PRINT_SUMMARY;
  const char *zSubcmd;
  int n;
  int i;
  Stmt q;

  if( g.argc<3 ) usage("SUBCOMMAND ?ARGS?");
  zSubcmd = g.argv[2];
  db_find_and_open_repository(0,0);
  n = (int)strlen(zSubcmd);
  if( find_option("explain",0,0)!=0 || find_option("dry-run",0,0)!=0 ){
    purgeFlags |= PURGE_EXPLAIN_ONLY;
  }
  if( strncmp(zSubcmd, "artifacts", n)==0 ){
    verify_all_options();
    db_begin_transaction();
    db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
    for(i=3; i<g.argc; i++){
      int r = name_to_typed_rid(g.argv[i], "");
      db_multi_exec("INSERT OR IGNORE INTO ok(rid) VALUES(%d);", r);
    }
    describe_artifacts_to_stdout("IN ok", 0);
    purge_artifact_list("ok", "", purgeFlags);
    db_end_transaction(0);
  }else if( strncmp(zSubcmd, "cat", n)==0 ){
    int i, piid;
    Blob content;
    if( g.argc<4 ) usage("cat HASH...");
    for(i=3; i<g.argc; i++){
      piid = db_int(0, "SELECT piid FROM purgeitem WHERE uuid LIKE '%q%%'",
                       g.argv[i]);
      if( piid==0 ) fossil_fatal("no such item: %s", g.argv[3]);
      purge_extract_item(piid, &content);
      blob_write_to_file(&content, "-");
      blob_reset(&content);
    }
  }else if( strncmp(zSubcmd, "checkins", n)==0 ){
    int vid;
    if( find_option("explain",0,0)!=0 || find_option("dry-run",0,0)!=0 ){
      purgeFlags |= PURGE_EXPLAIN_ONLY;
    }
    verify_all_options();
    db_begin_transaction();
    if( g.argc<=3 ) usage("checkins TAGS... [OPTIONS]");
    db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
    for(i=3; i<g.argc; i++){
      int r = name_to_typed_rid(g.argv[i], "br");
      compute_descendants(r, 1000000000);
    }
    vid = db_lget_int("checkout",0);
    if( db_exists("SELECT 1 FROM ok WHERE rid=%d",vid) ){
      fossil_fatal("cannot purge the current check-out");
    }
    find_checkin_associates("ok", 1);
    purge_artifact_list("ok", "", purgeFlags);
    db_end_transaction(0);
  }else if( strncmp(zSubcmd, "files", n)==0 ){
    verify_all_options();
    db_begin_transaction();
    db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
    for(i=3; i<g.argc; i++){
      db_multi_exec(
         "INSERT OR IGNORE INTO ok(rid) "
         "  SELECT fid FROM mlink, filename"
         "   WHERE mlink.fnid=filename.fnid"
         "     AND (filename.name=%Q OR filename.name GLOB '%q/*')",
         g.argv[i], g.argv[i]
      );
    }
    purge_artifact_list("ok", "", purgeFlags);
    db_end_transaction(0);
  }else if( strncmp(zSubcmd, "list", n)==0 || strcmp(zSubcmd,"ls")==0 ){
    int showDetail = find_option("l","l",0)!=0;
    if( !db_table_exists("repository","purgeevent") ) return;
    db_prepare(&q, "SELECT peid, datetime(ctime,'unixepoch',toLocal())"
                   " FROM purgeevent");
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%4d on %s\n", db_column_int(&q,0), db_column_text(&q,1));
      if( showDetail ){
        purge_list_event_content(db_column_int(&q,0));
      }
    }
    db_finalize(&q);
  }else if( strncmp(zSubcmd, "obliterate", n)==0 ){
    int i;
    int bForce = find_option("force","f",0)!=0;
    if( g.argc<4 ) usage("obliterate ID...");
    if( !bForce ){
      Blob ans;
      char cReply;
      prompt_user(
         "Obliterating the graveyard will permanently delete information.\n"
         "Changes cannot be undone.  Continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply!='y' && cReply!='Y' ){
        fossil_exit(1);
      }
    }
    db_begin_transaction();
    for(i=3; i<g.argc; i++){
      int peid = atoi(g.argv[i]);
      if( !db_exists("SELECT 1 FROM purgeevent WHERE peid=%d",peid) ){
        fossil_fatal("no such purge event: %s", g.argv[i]);
      }
      db_multi_exec(
        "DELETE FROM purgeevent WHERE peid=%d;"
        "DELETE FROM purgeitem WHERE peid=%d;",
        peid, peid
      );
    }
    db_end_transaction(0);
  }else if( strncmp(zSubcmd, "tickets", n)==0 ){
    fossil_fatal("not yet implemented....");
  }else if( strncmp(zSubcmd, "undo", n)==0 ){
    int peid;
    if( g.argc!=4 ) usage("undo ID");
    peid = atoi(g.argv[3]);
    if( (purgeFlags & PURGE_EXPLAIN_ONLY)==0 ){
      db_begin_transaction();
      db_multi_exec(
        "CREATE TEMP TABLE ix("
        "  piid INTEGER PRIMARY KEY,"
        "  srcid INTEGER"
        ");"
        "CREATE INDEX ixsrcid ON ix(srcid);"
        "INSERT INTO ix(piid,srcid) "
        "  SELECT piid, coalesce(srcid,0) FROM purgeitem WHERE peid=%d;",
        peid
      );
      db_multi_exec(
        "DELETE FROM shun"
        " WHERE uuid IN (SELECT uuid FROM purgeitem WHERE peid=%d);",
        peid
      );
      manifest_crosslink_begin();
      purge_item_resurrect(0, 0);
      manifest_crosslink_end(0);
      db_multi_exec("DELETE FROM purgeevent WHERE peid=%d", peid);
      db_multi_exec("DELETE FROM purgeitem WHERE peid=%d", peid);
      db_end_transaction(0);
    }
  }else if( strncmp(zSubcmd, "wiki", n)==0 ){
    fossil_fatal("not yet implemented....");
  }else{
    fossil_fatal("unknown subcommand \"%s\".\n"
                 "should be one of:  cat, checkins, files, list, obliterate,"
                 " tickets, undo, wiki", zSubcmd);
  }
}
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*******************************************************************************
**
** This file contains code used to rebuild the database.
*/
#include "config.h"
#include "rebuild.h"
#include <assert.h>
#include <errno.h>

/*
** Update the schema as necessary
*/
static void rebuild_update_schema(void){
  /* Verify that the PLINK table has a new column added by the
  ** 2014-11-28 schema change.  Create it if necessary.  This code
  ** can be removed in the future, once all users have upgraded to the
  ** 2014-11-28 or later schema.
  */
  if( !db_table_has_column("repository","plink","baseid") ){
    db_multi_exec(
      "ALTER TABLE repository.plink ADD COLUMN baseid;"
    );
  }

  /* Verify that the MLINK table has the newer columns added by the
  ** 2015-01-24 schema change.  Create them if necessary.  This code
  ** can be removed in the future, once all users have upgraded to the
  ** 2015-01-24 or later schema.
  */
  if( !db_table_has_column("repository","mlink","isaux") ){
    db_begin_transaction();
    db_multi_exec(
      "ALTER TABLE repository.mlink ADD COLUMN pmid INTEGER DEFAULT 0;"
      "ALTER TABLE repository.mlink ADD COLUMN isaux BOOLEAN DEFAULT 0;"
    );
    db_end_transaction(0);
  }

  /* Add the user.mtime column if it is missing. (2011-04-27)
  */
  if( !db_table_has_column("repository", "user", "mtime") ){
    db_unprotect(PROTECT_ALL);
    db_multi_exec(
      "CREATE TEMP TABLE temp_user AS SELECT * FROM user;"
      "DROP TABLE user;"
      "CREATE TABLE user(\n"
      "  uid INTEGER PRIMARY KEY,\n"
      "  login TEXT UNIQUE,\n"
      "  pw TEXT,\n"
      "  cap TEXT,\n"
      "  cookie TEXT,\n"
      "  ipaddr TEXT,\n"
      "  cexpire DATETIME,\n"
      "  info TEXT,\n"
      "  mtime DATE,\n"
      "  photo BLOB\n"
      ");"
      "INSERT OR IGNORE INTO user"
        " SELECT uid, login, pw, cap, cookie,"
               " ipaddr, cexpire, info, now(), photo FROM temp_user;"
      "DROP TABLE temp_user;"
    );
    db_protect_pop();

/*
  }

** Schema changes
*/
static const char zSchemaUpdates[] =
  /* Add the config.mtime column if it is missing.  (2011-04-27)
  */
  if( !db_table_has_column("repository", "config", "mtime") ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "ALTER TABLE config ADD COLUMN mtime INTEGER;"
      "UPDATE config SET mtime=now();"
@ -- Index on the delta table
@ --
@ CREATE INDEX IF NOT EXISTS delta_i1 ON delta(srcid);
@
    );
    db_protect_pop();
  }

@ -- Artifacts that should not be processed are identified in the
@ -- "shun" table.  Artifacts that are control-file forgeries or
  /* Add the shun.mtime and shun.scom columns if they are missing.
  ** (2011-04-27)
  */
  if( !db_table_has_column("repository", "shun", "mtime") ){
@ -- spam or artifacts whose contents violate administrative policy
@ -- can be shunned in order to prevent them from contaminating
    db_multi_exec(
      "ALTER TABLE shun ADD COLUMN mtime INTEGER;"
      "ALTER TABLE shun ADD COLUMN scom TEXT;"
@ -- the repository.
@ --
@ -- Shunned artifacts do not exist in the blob table.  Hence they
@ -- have not artifact ID (rid) and we thus must store their full
@ -- UUID.
@ --
@ CREATE TABLE IF NOT EXISTS shun(uuid UNIQUE);
@
@ -- Artifacts that should not be pushed are stored in the "private"
@ -- table.  
@ --
@ CREATE TABLE IF NOT EXISTS private(rid INTEGER PRIMARY KEY);
@
      "UPDATE shun SET mtime=now();"
    );
  }

  /* Add the reportfmt.mtime column if it is missing. (2011-04-27)
  */
  if( !db_table_has_column("repository", "reportfmt", "mtime") ){
    static const char zCreateReportFmtTable[] =
    @ -- An entry in this table describes a database query that generates a
    @ -- table of tickets.
    @ --
    @ CREATE TABLE IF NOT EXISTS reportfmt(
    @    rn INTEGER PRIMARY KEY,  -- Report number
    @    owner TEXT,              -- Owner of this report format (not used)
    @    title TEXT UNIQUE,       -- Title of this report
    @    mtime INTEGER,           -- Time last modified.  Seconds since 1970
    @    cols TEXT,               -- A color-key specification
    @    sqlcode TEXT             -- An SQL SELECT statement for this report
    @ );
@ -- An entry in this table describes a database query that generates a
@ -- table of tickets.
    ;
    db_multi_exec(
      "CREATE TEMP TABLE old_fmt AS SELECT * FROM reportfmt;"
      "DROP TABLE reportfmt;"
    );
    db_multi_exec("%s", zCreateReportFmtTable/*safe-for-%s*/);
    db_multi_exec(
@ --
@ CREATE TABLE IF NOT EXISTS reportfmt(
@    rn integer primary key,  -- Report number
@    owner text,              -- Owner of this report format (not used)
@    title text,              -- Title of this report
      "INSERT OR IGNORE INTO reportfmt(rn,owner,title,cols,sqlcode,mtime)"
        " SELECT rn, owner, title, cols, sqlcode, now() FROM old_fmt;"
      "INSERT OR IGNORE INTO reportfmt(rn,owner,title,cols,sqlcode,mtime)"
        " SELECT rn, owner, title || ' (' || rn || ')', cols, sqlcode, now()"
        "   FROM old_fmt;"
@    cols text,               -- A color-key specification
@    sqlcode text             -- An SQL SELECT statement for this report
@ );
@
    );
  }

@ -- Some ticket content (such as the originators email address or contact
@ -- information) needs to be obscured to protect privacy.  This is achieved
@ -- by storing an SHA1 hash of the content.  For display, the hash is
@ -- mapped back into the original text using this table.  
@ --
@ -- This table contains sensitive information and should not be shared
@ -- with unauthorized users.
@ --
  /* Add the concealed.mtime column if it is missing. (2011-04-27)
  */
  if( !db_table_has_column("repository", "concealed", "mtime") ){
    db_multi_exec(
      "ALTER TABLE concealed ADD COLUMN mtime INTEGER;"
      "UPDATE concealed SET mtime=now();"
    );
  }

  /* Do the fossil-2.0 updates to the schema.  (2017-02-28)
  */
  rebuild_schema_update_2_0();

  /* Add the user.jx and reportfmt.jx columns if they are missing. (2022-11-18)
  */
  user_update_user_table();
  report_update_reportfmt_table();
}

/*
** Update the repository schema for Fossil version 2.0.  (2017-02-28)
**   (1) Change the CHECK constraint on BLOB.UUID so that the length
**       is greater than or equal to 40, not exactly equal to 40.
*/
void rebuild_schema_update_2_0(void){
  char *z = db_text(0, "SELECT sql FROM repository.sqlite_schema"
                       " WHERE name='blob'");
  if( z ){
@ CREATE TABLE IF NOT EXISTS concealed(
@   hash TEXT PRIMARY KEY,
@   content TEXT
@ );
    /* Search for:  length(uuid)==40
    **              0123456789 12345   */
    int i;
    for(i=10; z[i]; i++){
      if( z[i]=='=' && strncmp(&z[i-6],"(uuid)==40",10)==0 ){
        int rc = 0;
        z[i] = '>';
        sqlite3_db_config(g.db, SQLITE_DBCONFIG_DEFENSIVE, 0, &rc);
        db_multi_exec(
           "PRAGMA writable_schema=ON;"
           "UPDATE repository.sqlite_schema SET sql=%Q WHERE name LIKE 'blob';"
           "PRAGMA writable_schema=OFF;",
           z
        );
;

        sqlite3_db_config(g.db, SQLITE_DBCONFIG_DEFENSIVE, 1, &rc);
        break;
      }
    }
    fossil_free(z);
  }
  db_multi_exec(
    "CREATE VIEW IF NOT EXISTS "
    "  repository.artifact(rid,rcvid,size,atype,srcid,hash,content) AS "
    "    SELECT blob.rid,rcvid,size,1,srcid,uuid,content"
    "      FROM blob LEFT JOIN delta ON (blob.rid=delta.rid);"
  );
}

/*
** Variables used for progress information
** Variables used to store state information about an on-going "rebuild"
** or "deconstruct".
*/
static int totalSize;       /* Total number of artifacts to process */
static int processCnt;      /* Number processed so far */
static int ttyOutput;       /* Do progress output */
static Bag bagDone;         /* Bag of records rebuilt */
static int totalSize;          /* Total number of artifacts to process */
static int processCnt;         /* Number processed so far */
static int ttyOutput;          /* Do progress output */
static Bag bagDone = Bag_INIT; /* Bag of records rebuilt */

static char *zFNameFormat;  /* Format string for filenames on deconstruct */
static int cchFNamePrefix;  /* Length of directory prefix in zFNameFormat */
static const char *zDestDir;/* Destination directory on deconstruct */
static int prefixLength;    /* Length of directory prefix for deconstruct */
static int fKeepRid1;       /* Flag to preserve RID=1 on de- and reconstruct */


/*
** Draw the percent-complete message.
** The input is actually the permill complete.
*/
static void percent_complete(int permill){
  static int lastOutput = -1;
  if( permill>lastOutput ){
    fossil_print("  %d.%d%% complete...\r", permill/10, permill%10);
    fflush(stdout);
    lastOutput = permill;
  }
}

/*
** Frees rebuild-level cached state. Intended only to be called by the
** app-level atexit() handler.
*/
void rebuild_clear_cache(){
  bag_clear(&bagDone);
}

/*
** Called after each artifact is processed
*/
static void rebuild_step_done(rid){
static void rebuild_step_done(int rid){
  /* assert( bag_find(&bagDone, rid)==0 ); */
  bag_insert(&bagDone, rid);
  if( ttyOutput ){
    processCnt++;
    if (!g.fQuiet) {
      printf("%d (%d%%)...\r", processCnt, (processCnt*100/totalSize));
    if (!g.fQuiet && totalSize>0) {
      percent_complete((processCnt*1000)/totalSize);
      fflush(stdout);
    }
  }
}

/*
** Rebuild cross-referencing information for the artifact
** rid with content pBase and all of its descendants.  This
** routine clears the content buffer before returning.
**
** If the zFNameFormat variable is set, then this routine is
** called to run "fossil deconstruct" instead of the usual
** "fossil rebuild".  In that case, instead of rebuilding the
** cross-referencing information, write the file content out
** to the appropriate directory.
**
** In both cases, this routine automatically recurses to process
** other artifacts that are deltas off of the current artifact.
** This is the most efficient way to extract all of the original
** artifact content from the Fossil repository.
*/
static void rebuild_step(int rid, int size, Blob *pBase){
  Stmt q1;
  static Stmt q1;
  Bag children;
  Blob copy;
  Blob *pUse;
  int nChild, i, cid;

  while( rid>0 ){

  /* Fix up the "blob.size" field if needed. */
  if( size!=blob_size(pBase) ){
    db_multi_exec(
       "UPDATE blob SET size=%d WHERE rid=%d", blob_size(pBase), rid
    );
  }
    /* Fix up the "blob.size" field if needed. */
    if( size!=(int)blob_size(pBase) ){
      db_multi_exec(
         "UPDATE blob SET size=%d WHERE rid=%d", blob_size(pBase), rid
      );
    }

  /* Find all children of artifact rid */
  db_prepare(&q1, "SELECT rid FROM delta WHERE srcid=%d", rid);
  bag_init(&children);
  while( db_step(&q1)==SQLITE_ROW ){
    int cid = db_column_int(&q1, 0);
    if( !bag_find(&bagDone, cid) ){
      bag_insert(&children, cid);
    }
  }
  nChild = bag_count(&children);
  db_finalize(&q1);
    /* Find all children of artifact rid */
    db_static_prepare(&q1, "SELECT rid FROM delta WHERE srcid=:rid");
    db_bind_int(&q1, ":rid", rid);
    bag_init(&children);
    while( db_step(&q1)==SQLITE_ROW ){
      int cid = db_column_int(&q1, 0);
      if( !bag_find(&bagDone, cid) ){
        bag_insert(&children, cid);
      }
    }
    nChild = bag_count(&children);
    db_reset(&q1);

  /* Crosslink the artifact */
  if( nChild==0 ){
    pUse = pBase;
  }else{
    blob_copy(&copy, pBase);
    pUse = &copy;
  }
  manifest_crosslink(rid, pUse);
  blob_reset(pUse);

  /* Call all children recursively */
  for(cid=bag_first(&children), i=1; cid; cid=bag_next(&children, cid), i++){
    Stmt q2;
    int sz;
    /* Crosslink the artifact */
    if( nChild==0 ){
      pUse = pBase;
    }else{
      blob_copy(&copy, pBase);
      pUse = &copy;
    }
    if( zFNameFormat==0 ){
      /* We are doing "fossil rebuild" */
      manifest_crosslink(rid, pUse, MC_NONE);
    }else{
      /* We are doing "fossil deconstruct" */
      char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      char *zFile = mprintf(zFNameFormat /*works-like:"%s:%s"*/,
                            zUuid, zUuid+prefixLength);
      blob_write_to_file(pUse,zFile);
      if( rid==1 && fKeepRid1!=0 ){
        char *zFnDotRid1 = mprintf("%s/.rid1", zDestDir);
        char *zFnRid1 = zFile + cchFNamePrefix + 1; /* Skip directory slash */
        Blob bFileContents = empty_blob;
        blob_appendf(&bFileContents,
          "# The file holding the artifact with RID=1\n"
          "%s\n", zFnRid1);
        blob_write_to_file(&bFileContents, zFnDotRid1);
        blob_reset(&bFileContents);
        free(zFnDotRid1);
      }
      free(zFile);
      free(zUuid);
      blob_reset(pUse);
    }
    assert( blob_is_reset(pUse) );
    rebuild_step_done(rid);

    /* Call all children recursively */
    rid = 0;
    for(cid=bag_first(&children), i=1; cid; cid=bag_next(&children, cid), i++){
      static Stmt q2;
      int sz;
    if( nChild==i ){
      pUse = pBase;
    }else{
      blob_copy(&copy, pBase);
      pUse = &copy;
    }
    db_prepare(&q2, "SELECT content, size FROM blob WHERE rid=%d", cid);
    if( db_step(&q2)==SQLITE_ROW && (sz = db_column_int(&q2,1))>=0 ){
      Blob delta;
      db_ephemeral_blob(&q2, 0, &delta);
      blob_uncompress(&delta, &delta);
      blob_delta_apply(pUse, &delta, pUse);
      blob_reset(&delta);
      db_finalize(&q2);
      rebuild_step(cid, sz, pUse);
    }else{
      db_finalize(&q2);
      blob_reset(pUse);
    }
  }
  bag_clear(&children);
      db_static_prepare(&q2, "SELECT content, size FROM blob WHERE rid=:rid");
      db_bind_int(&q2, ":rid", cid);
      if( db_step(&q2)==SQLITE_ROW && (sz = db_column_int(&q2,1))>=0 ){
        Blob delta, next;
        db_ephemeral_blob(&q2, 0, &delta);
        blob_uncompress(&delta, &delta);
        blob_delta_apply(pBase, &delta, &next);
        blob_reset(&delta);
        db_reset(&q2);
        if( i<nChild ){
          rebuild_step(cid, sz, &next);
        }else{
          /* Tail recursion */
          rid = cid;
          size = sz;
          blob_reset(pBase);
          *pBase = next;
        }
      }else{
        db_reset(&q2);
        blob_reset(pBase);
      }
    }
    bag_clear(&children);
  rebuild_step_done(rid);
}

  }
}

/*
** Check to see if the the "sym-trunk" tag exists.  If not, create it
** Check to see if the "sym-trunk" tag exists.  If not, create it
** and attach it to the very first check-in.
*/
static void rebuild_tag_trunk(void){
  int tagid = db_int(0, "SELECT 1 FROM tag WHERE tagname='sym-trunk'");
  int rid;
  char *zUuid;

  if( tagid>0 ) return;
  rid = db_int(0, "SELECT pid FROM plink AS x WHERE NOT EXISTS("
                  "  SELECT 1 FROM plink WHERE cid=x.pid)");
  if( rid==0 ) return;

  /* Add the trunk tag to the root of the whole tree */
  zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( zUuid==0 ) return;
  tag_add_artifact("sym-", "trunk", zUuid, 0, 2);
  tag_add_artifact("", "branch", zUuid, "trunk", 2);
  tag_add_artifact("sym-", "trunk", zUuid, 0, 2, 0, 0);
  tag_add_artifact("", "branch", zUuid, "trunk", 2, 0, 0);
}

/*
** Core function to rebuild the infomration in the derived tables of a
** Core function to rebuild the information in the derived tables of a
** fossil repository from the blobs. This function is shared between
** 'rebuild_database' ('rebuild') and 'reconstruct_cmd'
** ('reconstruct'), both of which have to regenerate this information
** from scratch.
**
** If the randomize parameter is true, then the BLOBs are deliberately
** extracted in a random order.  This feature is used to test the
** ability of fossil to accept records in any order and still
** construct a sane repository.
*/
int rebuild_db(int randomize, int doOut){
  Stmt s;
int rebuild_db(int doOut, int doClustering){
  Stmt s, q;
  int errCnt = 0;
  char *zTable;
  int incrSize;
  Blob sql;

  bag_init(&bagDone);
  bag_clear(&bagDone);
  ttyOutput = doOut;
  processCnt = 0;
  if (!g.fQuiet) {
    printf("0 (0%%)...\r");
  if (ttyOutput && !g.fQuiet) {
    percent_complete(0);
    fflush(stdout);
  }
  manifest_disable_event_triggers();
  db_multi_exec(zSchemaUpdates);
  rebuild_update_schema();
  for(;;){
    zTable = db_text(0,
       "SELECT name FROM sqlite_master"
       " WHERE type='table'"
       " AND name NOT IN ('blob','delta','rcvfrom','user',"
                         "'config','shun','private','reportfmt',"
                         "'concealed')"
    );
  blob_init(&sql, 0, 0);
  db_unprotect(PROTECT_ALL);
  db_prepare(&q,
     "SELECT name FROM sqlite_schema /*scan*/"
     " WHERE type='table'"
     " AND name NOT IN ('admin_log', 'blob','delta','rcvfrom','user','alias',"
                       "'config','shun','private','reportfmt',"
                       "'concealed','accesslog','modreq',"
                       "'purgeevent','purgeitem','unversioned',"
                       "'subscriber','pending_alert','chat')"
     " AND name NOT GLOB 'sqlite_*'"
     " AND name NOT GLOB 'fx_*'"
  );
    if( zTable==0 ) break;
    db_multi_exec("DROP TABLE %Q", zTable);
  while( db_step(&q)==SQLITE_ROW ){
    blob_appendf(&sql, "DROP TABLE IF EXISTS \"%w\";\n", db_column_text(&q,0));
    free(zTable);
  }
  db_finalize(&q);
  db_multi_exec("%s", blob_str(&sql)/*safe-for-%s*/);
  blob_reset(&sql);
  db_multi_exec(zRepositorySchema2);
  db_multi_exec("%s", zRepositorySchema2/*safe-for-%s*/);
  ticket_create_table(0);
  shun_artifacts();

  db_multi_exec(
     "INSERT INTO unclustered"
     " SELECT rid FROM blob EXCEPT SELECT rid FROM private"
  );
  db_multi_exec(
     "DELETE FROM unclustered"
     " WHERE rid IN (SELECT rid FROM shun JOIN blob USING(uuid))"
  );
  db_multi_exec(
    "DELETE FROM config WHERE name IN ('remote-code', 'remote-maxid')"
  );
  db_multi_exec(
    "UPDATE user SET mtime=strftime('%%s','now') WHERE mtime IS NULL"
  );

  /* The following should be count(*) instead of max(rid). max(rid) is
  ** an adequate approximation, however, and is much faster for large
  ** repositories. */
  totalSize = db_int(0, "SELECT count(*) FROM blob");
  totalSize = db_int(0, "SELECT max(rid) FROM blob");
  incrSize = totalSize/100;
  totalSize += incrSize*2;
  db_prepare(&s,
     "SELECT rid, size FROM blob"
     "SELECT rid, size FROM blob /*scan*/"
     " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
     "   AND NOT EXISTS(SELECT 1 FROM delta WHERE rid=blob.rid)"
  );
  manifest_crosslink_begin();
  while( db_step(&s)==SQLITE_ROW ){
    int rid = db_column_int(&s, 0);
    int size = db_column_int(&s, 1);
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      }
    }else{
      db_multi_exec("INSERT OR IGNORE INTO phantom VALUES(%d)", rid);
      rebuild_step_done(rid);
    }
  }
  db_finalize(&s);
  manifest_crosslink_end();
  manifest_crosslink_end(MC_NONE);
  rebuild_tag_trunk();
  if( ttyOutput && !g.fQuiet && totalSize>0 ){
    processCnt += incrSize;
    percent_complete((processCnt*1000)/totalSize);
  }
  if( doClustering ) create_cluster();
  if( ttyOutput && !g.fQuiet && totalSize>0 ){
    processCnt += incrSize;
    percent_complete((processCnt*1000)/totalSize);
  }
  if(!g.fQuiet && ttyOutput ){
    percent_complete(1000);
    printf("\n");
    fossil_print("\n");
  }
  db_protect_pop();
  return errCnt;
}

/*
** Number of neighbors to search
*/
#define N_NEIGHBOR 5

/*
** Attempt to convert more full-text blobs into delta-blobs for
** storage efficiency.  Return the number of bytes of storage space
** saved.
*/
i64 extra_deltification(int *pnDelta){
  Stmt q;
  int aPrev[N_NEIGHBOR];
  int nPrev;
  int rid;
  int prevfnid, fnid;
  int nDelta = 0;
  i64 nByte = 0;
  int nSaved;
  db_begin_transaction();

  /* Look for manifests that have not been deltaed and try to make them
  ** children of one of the 5 chronologically subsequent check-ins
  */
  db_prepare(&q,
     "SELECT rid FROM event, blob"
     " WHERE blob.rid=event.objid"
     "   AND event.type='ci'"
     "   AND NOT EXISTS(SELECT 1 FROM delta WHERE rid=blob.rid)"
     " ORDER BY event.mtime DESC"
  );
  nPrev = 0;
  while( db_step(&q)==SQLITE_ROW ){
    rid = db_column_int(&q, 0);
    if( nPrev>0 ){
      nSaved = content_deltify(rid, aPrev, nPrev, 0);
      if( nSaved>0 ){
        nDelta++;
        nByte += nSaved;
      }
    }
    if( nPrev<N_NEIGHBOR ){
      aPrev[nPrev++] = rid;
    }else{
      int i;
      for(i=0; i<N_NEIGHBOR-1; i++) aPrev[i] = aPrev[i+1];
      aPrev[N_NEIGHBOR-1] = rid;
    }
  }
  db_finalize(&q);

  /* For individual files that have not been deltaed, try to find
  ** a parent which is an undeltaed file with the same name in a
  ** more recent branch.
  */
  db_prepare(&q,
     "SELECT DISTINCT blob.rid, mlink.fnid FROM blob, mlink, plink"
     " WHERE NOT EXISTS(SELECT 1 FROM delta WHERE rid=blob.rid)"
     "   AND mlink.fid=blob.rid"
     "   AND mlink.mid=plink.cid"
     "   AND plink.cid=mlink.mid"
     " ORDER BY mlink.fnid, plink.mtime DESC"
  );
  prevfnid = 0;
  while( db_step(&q)==SQLITE_ROW ){
    rid = db_column_int(&q, 0);
    fnid = db_column_int(&q, 1);
    if( fnid!=prevfnid ) nPrev = 0;
    prevfnid = fnid;
    if( nPrev>0 ){
      nSaved = content_deltify(rid, aPrev, nPrev, 0);
      if( nSaved>0 ){
        nDelta++;
        nByte += nSaved;
      }
    }
    if( nPrev<N_NEIGHBOR ){
      aPrev[nPrev++] = rid;
    }else{
      int i;
      for(i=0; i<N_NEIGHBOR-1; i++) aPrev[i] = aPrev[i+1];
      aPrev[N_NEIGHBOR-1] = rid;
    }
  }
  db_finalize(&q);

  db_end_transaction(0);
  if( pnDelta!=0 ) *pnDelta = nDelta;
  return nByte;
}


/* Reconstruct the private table.  The private table contains the rid
** of every manifest that is tagged with "private" and every file that
** is not used by a manifest that is not private.
*/
static void reconstruct_private_table(void){
  db_multi_exec(
    "CREATE TEMP TABLE private_ckin(rid INTEGER PRIMARY KEY);"
    "INSERT INTO private_ckin "
        " SELECT rid FROM tagxref WHERE tagid=%d AND tagtype>0;"
    "INSERT OR IGNORE INTO private"
        " SELECT fid FROM mlink"
        " EXCEPT SELECT fid FROM mlink WHERE mid NOT IN private_ckin;"
    "INSERT OR IGNORE INTO private SELECT rid FROM private_ckin;"
    "DROP TABLE private_ckin;", TAG_PRIVATE
  );
  fix_private_blob_dependencies(0);
}

/*
** COMMAND:  rebuild
** COMMAND: repack
**
** Usage: %fossil repack ?REPOSITORY?
**
** Perform extra delta-compression to try to minimize the size of the
** repository.  This command is simply a short-hand for:
**
**     fossil rebuild --compress-only
**
** The name for this command is stolen from the "git repack" command that
** does approximately the same thing in Git.
*/
void repack_command(void){
  i64 nByte = 0;
  int nDelta = 0;
  int runVacuum = 0;
  verify_all_options();
  if( g.argc==3 ){
    db_open_repository(g.argv[2]);
  }else if( g.argc==2 ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
    if( g.argc!=2 ){
      usage("?REPOSITORY-FILENAME?");
    }
    db_close(1);
    db_open_repository(g.zRepositoryName);
  }else{
    usage("?REPOSITORY-FILENAME?");
  }
  db_unprotect(PROTECT_ALL);
  nByte = extra_deltification(&nDelta);
  if( nDelta>0 ){
    if( nDelta==1 ){
      fossil_print("1 new delta saves %,lld bytes\n", nByte);
    }else{
      fossil_print("%d new deltas save %,lld bytes\n", nDelta, nByte);
    }
    runVacuum = 1;
  }else{
    fossil_print("no new compression opportunities found\n");
    runVacuum = db_int(0, "PRAGMA repository.freelist_count")>0;
  }
  if( runVacuum ){
    fossil_print("Vacuuming the database... "); fflush(stdout);
    db_multi_exec("VACUUM");
    fossil_print("done\n");
  }
}


/*
** COMMAND: rebuild
**
** Usage: %fossil rebuild ?REPOSITORY?
** Usage: %fossil rebuild ?REPOSITORY? ?OPTIONS?
**
** Reconstruct the named repository database from the core
** records.  Run this command after updating the fossil
** executable in a way that changes the database schema.
**
** Options:
**   --analyze         Run ANALYZE on the database after rebuilding
**   --cluster         Compute clusters for unclustered artifacts
**   --compress        Strive to make the database as small as possible
**   --compress-only   Skip the rebuilding step. Do --compress only
**   --force           Force the rebuild to complete even if errors are seen
**   --ifneeded        Only do the rebuild if it would change the schema version
**   --index           Always add in the full-text search index
**   --noverify        Skip the verification of changes to the BLOB table
**   --noindex         Always omit the full-text search index
**   --pagesize N      Set the database pagesize to N (512..65536, power of 2)
**   --quiet           Only show output if there are errors
**   --stats           Show artifact statistics after rebuilding
**   --vacuum          Run VACUUM on the database after rebuilding
**   --wal             Set Write-Ahead-Log journalling mode on the database
*/
void rebuild_database(void){
  int forceFlag;
  int randomizeFlag;
  int errCnt;
  int errCnt = 0;
  int omitVerify;
  int doClustering;
  const char *zPagesize;
  int newPagesize = 0;
  int activateWal;
  int runVacuum;
  int runDeanalyze;
  int runAnalyze;
  int runCompress;
  int showStats;
  int runReindex;
  int optNoIndex;
  int optIndex;
  int optIfNeeded;
  int compressOnlyFlag;

  omitVerify = find_option("noverify",0,0)!=0;
  forceFlag = find_option("force","f",0)!=0;
  doClustering = find_option("cluster", 0, 0)!=0;
  runVacuum = find_option("vacuum",0,0)!=0;
  runDeanalyze = find_option("deanalyze",0,0)!=0; /* Deprecated */
  runAnalyze = find_option("analyze",0,0)!=0;
  runCompress = find_option("compress",0,0)!=0;
  zPagesize = find_option("pagesize",0,1);
  showStats = find_option("stats",0,0)!=0;
  optIndex = find_option("index",0,0)!=0;
  optNoIndex = find_option("noindex",0,0)!=0;
  optIfNeeded = find_option("ifneeded",0,0)!=0;
  randomizeFlag = find_option("randomize", 0, 0)!=0;
  compressOnlyFlag = find_option("compress-only",0,0)!=0;
  if( compressOnlyFlag ) runCompress = 1;
  if( zPagesize ){
    newPagesize = atoi(zPagesize);
    if( newPagesize<512 || newPagesize>65536
        || (newPagesize&(newPagesize-1))!=0
    ){
      fossil_fatal("page size must be a power of two between 512 and 65536");
    }
  }
  activateWal = find_option("wal",0,0)!=0;
  if( g.argc==3 ){
    db_open_repository(g.argv[2]);
  }else{
    db_find_and_open_repository(1);
    db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
    if( g.argc!=2 ){
      usage("?REPOSITORY-FILENAME?");
    }
    db_close();
    db_close(1);
    db_open_repository(g.zRepositoryName);
  }
  runReindex = search_index_exists() && !compressOnlyFlag;
  if( optIndex ) runReindex = 1;
  if( optNoIndex ) runReindex = 0;
  if( optIfNeeded && fossil_strcmp(db_get("aux-schema",""),AUX_SCHEMA_MAX)==0 ){
    return;
  }

  /* We should be done with options.. */
  verify_all_options();

  db_begin_transaction();
  db_unprotect(PROTECT_ALL);
  if( !compressOnlyFlag ){
    search_drop_index();
  ttyOutput = 1;
  errCnt = rebuild_db(randomizeFlag, 1);
    ttyOutput = 1;
    errCnt = rebuild_db(1, doClustering);
    reconstruct_private_table();
  }
  db_multi_exec(
    "REPLACE INTO config(name,value,mtime) VALUES('content-schema',%Q,now());"
    "REPLACE INTO config(name,value,mtime) VALUES('aux-schema',%Q,now());"
    "REPLACE INTO config(name,value,mtime) VALUES('rebuilt',%Q,now());",
    CONTENT_SCHEMA, AUX_SCHEMA_MAX, get_version()
  );
  if( errCnt && !forceFlag ){
    fossil_print(
    printf("%d errors. Rolling back changes. Use --force to force a commit.\n",
            errCnt);
      "%d errors. Rolling back changes. Use --force to force a commit.\n",
      errCnt
    );
    db_end_transaction(1);
  }else{
    if( runCompress ){
      i64 nByte = 0;
      int nDelta = 0;
      fossil_print("Extra delta compression... "); fflush(stdout);
      nByte = extra_deltification(&nDelta);
      if( nDelta>0 ){
        if( nDelta==1 ){
          fossil_print("1 new delta saves %,lld bytes", nByte);
        }else{
          fossil_print("%d new deltas save %,lld bytes", nDelta, nByte);
        }
        runVacuum = 1;
      }else{
        fossil_print("none found");
      }
      fflush(stdout);
    }
    if( omitVerify ) verify_cancel();
    db_end_transaction(0);
    if( runCompress ) fossil_print("\n");
    db_close(0);
    db_open_repository(g.zRepositoryName);
    if( newPagesize ){
      db_multi_exec("PRAGMA page_size=%d", newPagesize);
      runVacuum = 1;
    }
    if( runDeanalyze ){
      db_multi_exec("DROP TABLE IF EXISTS sqlite_stat1;"
                    "DROP TABLE IF EXISTS sqlite_stat3;"
                    "DROP TABLE IF EXISTS sqlite_stat4;");
    }
    if( runAnalyze ){
      fossil_print("Analyzing the database... "); fflush(stdout);
      db_multi_exec("ANALYZE;");
      fossil_print("done\n");
    }
    if( runVacuum ){
      fossil_print("Vacuuming the database... "); fflush(stdout);
      db_multi_exec("VACUUM");
      fossil_print("done\n");
    }
    if( activateWal ){
      db_multi_exec("PRAGMA journal_mode=WAL;");
    }
  }
  if( runReindex ) search_rebuild_index();
  db_protect_pop();
  if( showStats ){
    static const struct { int idx; const char *zLabel; } aStat[] = {
       { CFTYPE_ANY,       "Artifacts:" },
       { CFTYPE_MANIFEST,  "Manifests:" },
       { CFTYPE_CLUSTER,   "Clusters:" },
       { CFTYPE_CONTROL,   "Tags:" },
       { CFTYPE_WIKI,      "Wikis:" },
       { CFTYPE_TICKET,    "Tickets:" },
       { CFTYPE_ATTACHMENT,"Attachments:" },
       { CFTYPE_EVENT,     "Events:" },
    };
    int i;
    int subtotal = 0;
    for(i=0; i<count(aStat); i++){
      int k = aStat[i].idx;
      fossil_print("%-15s %6d\n", aStat[i].zLabel, g.parseCnt[k]);
      if( k>0 ) subtotal += g.parseCnt[k];
    }
    fossil_print("%-15s %6d\n", "Other:", g.parseCnt[CFTYPE_ANY] - subtotal);
  }
}

/*
** COMMAND:  test-detach
** COMMAND: detach*
**
** Usage: %fossil detach ?REPOSITORY?
**
** Change the project-code and make other changes in order to prevent
** the repository from ever again pushing or pulling to other
** repositories.  Used to create a "test" repository for development
** testing by cloning a working project repository.
** Change the project-code and make other changes to REPOSITORY so that
** it becomes a new and distinct child project.  After being detached,
** REPOSITORY will not longer be able to push and pull from other clones
** of the original project.  However REPOSITORY will still be able to pull
** from those other clones using the --from-parent-project option of the
** "fossil pull" command.
**
** This is an experts-only command. You should not use this command unless
** you fully understand what you are doing.
**
** The original use-case for this command was to create test repositories
** from real-world working repositories that could be safely altered by
** making strange commits or other changes, without having to worry that
** those test changes would leak back into the original project via an
** accidental auto-sync.
*/
void test_detach_cmd(void){
  const char *zXfer[] = {
     "project-name",  "parent-project-name",
     "project-code",  "parent-project-code",
     "last-sync-url", "parent-project-url",
     "last-sync-pw",  "parent-project-pw"
  };
  int i;
  Blob ans;
  char cReply;
  db_find_and_open_repository(1);
  db_find_and_open_repository(0, 2);
  prompt_user("This change will be difficult to undo. Are you sure (y/N)? ",
              &ans);
  cReply = blob_str(&ans)[0];
  if( cReply!='y' && cReply!='Y' ) return;
  db_begin_transaction();
  db_unprotect(PROTECT_CONFIG);
  for(i=0; i<ArraySize(zXfer)-1; i+=2 ){
  db_multi_exec(
    "DELETE FROM config WHERE name='last-sync-url';"
    db_multi_exec(
      "REPLACE INTO config(name,value,mtime)"
        " SELECT %Q, value, now() FROM config WHERE name=%Q",
      zXfer[i+1], zXfer[i]
    );
  }
  db_multi_exec(
    "DELETE FROM config WHERE name IN"
    "(WITH pattern(x) AS (VALUES"
    "  ('baseurl:*'),"
    "  ('cert:*'),"
    "  ('ckout:*'),"
    "  ('gitpush:*'),"
    "  ('http-auth:*'),"
    "  ('last-sync-*'),"
    "  ('link:*'),"
    "  ('login-group-*'),"
    "  ('peer-*'),"
    "  ('subrepo:*'),"
    "  ('sync-*'),"
    "  ('syncfrom:*'),"
    "  ('syncwith:*'),"
    "  ('ssl-*')"
    ") SELECT name FROM config, pattern WHERE name GLOB x);"
    "UPDATE config SET value=lower(hex(randomblob(20)))"
    " WHERE name='project-code';"
    "UPDATE config SET value='detached-' || value"
    " WHERE name='project-name' AND value NOT GLOB 'detached-*';"
  );
  db_protect_pop();
  db_end_transaction(0);
  fossil_print("New project code: %s\n", db_get("project-code",""));
}

/*
** COMMAND: test-create-clusters
**
** Create clusters for all unclustered artifacts if the number of unclustered
** artifacts exceeds the current clustering threshold.
*/
void test_createcluster_cmd(void){
  if( g.argc==3 ){
    db_open_repository(g.argv[2]);
  }else{
    db_find_and_open_repository(0, 0);
    if( g.argc!=2 ){
      usage("?REPOSITORY-FILENAME?");
    }
    db_close(1);
    db_open_repository(g.zRepositoryName);
  }
  db_begin_transaction();
  create_cluster();
  db_end_transaction(0);
}

/*
** COMMAND: test-clusters
**
** Verify that all non-private and non-shunned artifacts are accessible
** through the cluster chain.
*/
void test_clusters_cmd(void){
  Bag pending;
  Stmt q;
  int n;

  db_find_and_open_repository(0, 2);
  bag_init(&pending);
  db_multi_exec(
    "CREATE TEMP TABLE xdone(x INTEGER PRIMARY KEY);"
    "INSERT INTO xdone SELECT rid FROM unclustered;"
    "INSERT OR IGNORE INTO xdone SELECT rid FROM private;"
    "INSERT OR IGNORE INTO xdone"
         " SELECT blob.rid FROM shun JOIN blob USING(uuid);"
  );
  db_prepare(&q,
    "SELECT rid FROM unclustered WHERE rid IN"
    " (SELECT rid FROM tagxref WHERE tagid=%d)", TAG_CLUSTER
  );
  while( db_step(&q)==SQLITE_ROW ){
    bag_insert(&pending, db_column_int(&q, 0));
  }
  db_finalize(&q);
  while( bag_count(&pending)>0 ){
    Manifest *p;
    int rid = bag_first(&pending);
    int i;

    bag_remove(&pending, rid);
    p = manifest_get(rid, CFTYPE_CLUSTER, 0);
    if( p==0 ){
      fossil_fatal("bad cluster: rid=%d", rid);
    }
    for(i=0; i<p->nCChild; i++){
      const char *zUuid = p->azCChild[i];
      int crid = name_to_rid(zUuid);
      if( crid==0 ){
         fossil_warning("cluster (rid=%d) references unknown artifact %s",
                        rid, zUuid);
         continue;
      }
      db_multi_exec("INSERT OR IGNORE INTO xdone VALUES(%d)", crid);
      if( db_exists("SELECT 1 FROM tagxref WHERE tagid=%d AND rid=%d",
                    TAG_CLUSTER, crid) ){
        bag_insert(&pending, crid);
      }
    }
    manifest_destroy(p);
  }
  n = db_int(0, "SELECT count(*) FROM /*scan*/"
                "  (SELECT rid FROM blob EXCEPT SELECT x FROM xdone)");
  if( n==0 ){
    fossil_print("all artifacts reachable through clusters\n");
  }else{
    fossil_print("%d unreachable artifacts:\n", n);
    db_prepare(&q, "SELECT rid, uuid FROM blob WHERE rid NOT IN xdone");
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("  %3d %s\n", db_column_int(&q,0), db_column_text(&q,1));
    }
    db_finalize(&q);
  }
}

/*
** COMMAND: scrub
** %fossil scrub [--verily] [--force] [REPOSITORY]
** COMMAND: scrub*
**
** Usage: %fossil scrub ?OPTIONS? ?REPOSITORY?
**
** The command removes sensitive information (such as passwords) from a
** repository so that the respository can be sent to an untrusted reader.
** repository so that the repository can be sent to an untrusted reader.
**
** By default, only passwords are removed.  However, if the --verily option
** is added, then private branches, concealed email addresses, IP
** addresses of correspondents, and similar privacy-sensitive fields
** are also purged.
** are also purged.  If the --private option is used, then only private
** branches are removed and all other information is left intact.
**
** This command permanently deletes the scrubbed information.  The effects
** This command permanently deletes the scrubbed information. THE EFFECTS
** of this command are irreversible.  Use with caution.
** OF THIS COMMAND ARE IRREVERSIBLE. USE WITH CAUTION!
**
** The user is prompted to confirm the scrub unless the --force option
** is used.
**
** Options:
**   --force     Do not prompt for confirmation
**   --private   Only private branches are removed from the repository
**   --verily    Scrub real thoroughly (see above)
*/
void scrub_cmd(void){
  int bVerily = find_option("verily",0,0)!=0;
  int bForce = find_option("force", "f", 0)!=0;
  int privateOnly = find_option("private",0,0)!=0;
  int bNeedRebuild = 0;
  if( g.argc!=2 && g.argc!=3 ) usage("?REPOSITORY?");
  if( g.argc==2 ){
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 2);
    db_must_be_within_tree();
  }else{
    db_open_repository(g.argv[2]);
  }
  db_close(1);
  db_open_repository(g.zRepositoryName);

  /* We should be done with options.. */
  verify_all_options();

  if( !bForce ){
    Blob ans;
    char cReply;
    blob_zero(&ans);
    prompt_user("Scrubbing the repository will permanently remove user\n"
    prompt_user(
         "Scrubbing the repository will permanently delete information.\n"
                "passwords and other information. Changes cannot be undone.\n"
                "Continue (y/N)? ", &ans);
    if( blob_str(&ans)[0]!='y' ){
      exit(1);
         "Changes cannot be undone.  Continue (y/N)? ", &ans);
    cReply = blob_str(&ans)[0];
    if( cReply!='y' && cReply!='Y' ){
      fossil_exit(1);
    }
  }
  db_begin_transaction();
  if( privateOnly || bVerily ){
    bNeedRebuild = db_exists("SELECT 1 FROM private");
    delete_private_content();
  }
  if( !privateOnly ){
    db_unprotect(PROTECT_ALL);
  db_multi_exec(
    "UPDATE user SET pw='';"
    "DELETE FROM config WHERE name GLOB 'last-sync-*';"
  );
  if( bVerily ){
    db_multi_exec(
      "PRAGMA secure_delete=ON;"
      "UPDATE user SET pw='';"
      "DELETE FROM config WHERE name IN"
      "(WITH pattern(x) AS (VALUES"
      "  ('baseurl:*'),"
      "  ('cert:*'),"
      "  ('ckout:*'),"
      "  ('draft[1-9]-*'),"
      "  ('gitpush:*'),"
      "  ('http-auth:*'),"
      "  ('last-sync-*'),"
      "  ('link:*'),"
      "  ('login-group-*'),"
      "  ('parent-project-*'),"
      "  ('peer-*'),"
      "  ('skin:*'),"
      "  ('subrepo:*'),"
      "  ('sync-*'),"
      "  ('syncfrom:*'),"
      "  ('syncwith:*'),"
      "  ('ssl-*')"
      ") SELECT name FROM config, pattern WHERE name GLOB x);"
    );
    if( bVerily ){
    bNeedRebuild = db_exists("SELECT 1 FROM private");
    db_multi_exec(
      "DELETE FROM concealed;"
      "UPDATE rcvfrom SET ipaddr='unknown';"
      "UPDATE user SET photo=NULL, info='';"
      db_multi_exec(
        "DELETE FROM concealed;\n"
        "UPDATE rcvfrom SET ipaddr='unknown';\n"
        "DROP TABLE IF EXISTS accesslog;\n"
        "UPDATE user SET photo=NULL, info='';\n"
      "INSERT INTO shun SELECT uuid FROM blob WHERE rid IN private;"
    );
  }
        "DROP TABLE IF EXISTS purgeevent;\n"
        "DROP TABLE IF EXISTS purgeitem;\n"
        "DROP TABLE IF EXISTS admin_log;\n"
        "DROP TABLE IF EXISTS vcache;\n"
        "DROP TABLE IF EXISTS chat;\n"
      );
    }
    db_protect_pop();
  }
  if( !bNeedRebuild ){
    db_end_transaction(0);
    db_unprotect(PROTECT_ALL);
    db_multi_exec("VACUUM;");
    db_protect_pop();
  }else{
    rebuild_db(0, 1);
    rebuild_db(1, 0);
    db_end_transaction(0);
  }
}

/*
** Recursively read all files from the directory zPath and install
** every file read as a new artifact in the repository.
*/
void recon_read_dir(char *zPath){
  DIR *d;
  struct dirent *pEntry;
  Blob aContent; /* content of the just read artifact */
  static int nFileRead = 0;
  void *zUnicodePath;
  char *zUtf8Name;
  static int recursionLevel = 0;  /* Bookkeeping about the recursion level */
  static char *zFnRid1 = 0;       /* The file holding the artifact with RID=1 */
  static int cchPathInitial = 0;  /* The length of zPath on first recursion */

  recursionLevel++;
  if( recursionLevel==1 ){
    cchPathInitial = strlen(zPath);
    if( fKeepRid1!=0 ){
      char *zFnDotRid1 = mprintf("%s/.rid1", zPath);
      Blob bFileContents;
      if( blob_read_from_file(&bFileContents, zFnDotRid1, ExtFILE)!=-1 ){
        Blob line, value;
        while( blob_line(&bFileContents, &line)>0 ){
          if( blob_token(&line, &value)==0 ) continue;  /* Empty line */
          if( blob_buffer(&value)[0]=='#' ) continue;   /* Comment */
          blob_trim(&value);
          zFnRid1 = mprintf("%s/%s", zPath, blob_str(&value));
          break;
        }
        blob_reset(&bFileContents);
        if( zFnRid1 ){
          if( blob_read_from_file(&aContent, zFnRid1, ExtFILE)==-1 ){
            fossil_fatal("some unknown error occurred while reading \"%s\"",
                         zFnRid1);
          }else{
            recon_set_hash_policy(0, zFnRid1);
            content_put(&aContent);
            recon_restore_hash_policy();
            blob_reset(&aContent);
            fossil_print("\r%d", ++nFileRead);
            fflush(stdout);
          }
        }else{
          fossil_fatal("an error occurred while reading or parsing \"%s\"",
                       zFnDotRid1);
        }
      }
      free(zFnDotRid1);
    }
  }
  zUnicodePath = fossil_utf8_to_path(zPath, 1);
  d = opendir(zUnicodePath);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      Blob path;
      char *zSubpath;

      if( pEntry->d_name[0]=='.' ){
        continue;
      }
      zUtf8Name = fossil_path_to_utf8(pEntry->d_name);
      zSubpath = mprintf("%s/%s", zPath, zUtf8Name);
      fossil_path_free(zUtf8Name);
#ifdef _DIRENT_HAVE_D_TYPE
      if( (pEntry->d_type==DT_UNKNOWN || pEntry->d_type==DT_LNK)
          ? (file_isdir(zSubpath, ExtFILE)==1) : (pEntry->d_type==DT_DIR) )
#else
      if( file_isdir(zSubpath, ExtFILE)==1 )
#endif
      {
        recon_read_dir(zSubpath);
      }else if( fossil_strcmp(zSubpath, zFnRid1)!=0 ){
        blob_init(&path, 0, 0);
        blob_appendf(&path, "%s", zSubpath);
        if( blob_read_from_file(&aContent, blob_str(&path), ExtFILE)==-1 ){
          fossil_fatal("some unknown error occurred while reading \"%s\"",
                       blob_str(&path));
        }
        recon_set_hash_policy(cchPathInitial, blob_str(&path));
        content_put(&aContent);
        recon_restore_hash_policy();
        blob_reset(&path);
        blob_reset(&aContent);
        fossil_print("\r%d", ++nFileRead);
        fflush(stdout);
      }
      free(zSubpath);
    }
    closedir(d);
  }else {
    fossil_fatal("encountered error %d while trying to open \"%s\".",
                  errno, g.argv[3]);
  }
  fossil_path_free(zUnicodePath);
  if( recursionLevel==1 && zFnRid1!=0 ) free(zFnRid1);
  recursionLevel--;
}

/*
** Helper functions called from recon_read_dir() to set and restore the correct
** hash policy for an artifact read from disk, inferred from the length of the
** path name.
*/
static int saved_eHashPolicy = -1;

void recon_set_hash_policy(
  const int cchPathPrefix,    /* Directory prefix length for zUuidAsFilePath */
  const char *zUuidAsFilePath /* Relative, well-formed, from recon_read_dir() */
){
  int cchUuidAsFilePath;
  const char *zHashPart;
  int cchHashPart = 0;
  int new_eHashPolicy = -1;
  assert( HNAME_COUNT==2 ); /* Review function if new hashes are implemented. */
  if( zUuidAsFilePath==0 ) return;
  cchUuidAsFilePath = strlen(zUuidAsFilePath);
  if( cchUuidAsFilePath==0 ) return;
  if( cchPathPrefix>=cchUuidAsFilePath ) return;
  for( zHashPart = zUuidAsFilePath + cchPathPrefix; *zHashPart; zHashPart++ ){
    if( *zHashPart!='/' ) cchHashPart++;
  }
  if( cchHashPart>=HNAME_LEN_K256 ){
    new_eHashPolicy = HPOLICY_SHA3;
  }else if( cchHashPart>=HNAME_LEN_SHA1 ){
    new_eHashPolicy = HPOLICY_SHA1;
  }
  if( new_eHashPolicy!=-1 ){
    saved_eHashPolicy = g.eHashPolicy;
    g.eHashPolicy = new_eHashPolicy;
  }
}

void recon_restore_hash_policy(){
  if( saved_eHashPolicy!=-1 ){
    g.eHashPolicy = saved_eHashPolicy;
    saved_eHashPolicy = -1;
  }
}

#if 0
/*
** COMMAND: test-hash-from-path*
**
** Usage: %fossil test-hash-from-path ?OPTIONS? DESTINATION UUID
**
** Generate a sample path name from DESTINATION and UUID, as the `deconstruct'
** command would do.  Then try to guess the hash policy from the path name, as
** the `reconstruct' command would do.
**
** No files or directories will be created.
**
** Options:
**   -L|--prefixlength N     Set the length of the names of the DESTINATION
**                           subdirectories to N
*/
void test_hash_from_path_cmd(void) {
  char *zDest;
  char *zUuid;
  char *zFile;
  const char *zHashPolicy = "unknown";
  const char *zPrefixOpt = find_option("prefixlength","L",1);
  int iPrefixLength;
  if( !zPrefixOpt ){
    iPrefixLength = 2;
  }else{
    iPrefixLength = atoi(zPrefixOpt);
    if( iPrefixLength<0 || iPrefixLength>9 ){
      fossil_fatal("N(%s) is not a valid prefix length!",zPrefixOpt);
    }
  }
  if( g.argc!=4 ){
    usage ("?OPTIONS? DESTINATION UUID");
  }
  zDest = g.argv[2];
  zUuid = g.argv[3];
  if( iPrefixLength ){
    zFNameFormat = mprintf("%s/%%.%ds/%%s",zDest,iPrefixLength);
  }else{
    zFNameFormat = mprintf("%s/%%s",zDest);
  }
  cchFNamePrefix = strlen(zDest);
  zFile = mprintf(zFNameFormat /*works-like:"%s:%s"*/,
                  zUuid, zUuid+iPrefixLength);
  recon_set_hash_policy(cchFNamePrefix,zFile);
  if( saved_eHashPolicy!=-1 ){
    zHashPolicy = hpolicy_name();
  }
  recon_restore_hash_policy();
  fossil_print(
    "\nPath Name:   %s"
    "\nHash Policy: %s\n",
    zFile,zHashPolicy);
  free(zFile);
  free(zFNameFormat);
  zFNameFormat = 0;
  cchFNamePrefix = 0;
}
#endif

/*
** Helper functions used by the `deconstruct' and `reconstruct' commands to
** save and restore the contents of the PRIVATE table.
*/
void private_export(char *zFileName)
{
  Stmt q;
  Blob fctx = empty_blob;
  blob_append(&fctx, "# The hashes of private artifacts\n", -1);
  db_prepare(&q,
    "SELECT uuid FROM blob WHERE rid IN ( SELECT rid FROM private );");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    blob_append(&fctx, zUuid, -1);
    blob_append(&fctx, "\n", -1);
  }
  db_finalize(&q);
  blob_write_to_file(&fctx, zFileName);
  blob_reset(&fctx);
}
void private_import(char *zFileName)
{
  Blob fctx;
  if( blob_read_from_file(&fctx, zFileName, ExtFILE)!=-1 ){
    Blob line, value;
    while( blob_line(&fctx, &line)>0 ){
      char *zUuid;
      int nUuid;
      if( blob_token(&line, &value)==0 ) continue;  /* Empty line */
      if( blob_buffer(&value)[0]=='#' ) continue;   /* Comment */
      blob_trim(&value);
      zUuid = blob_buffer(&value);
      nUuid = blob_size(&value);
      zUuid[nUuid] = 0;
      if( hname_validate(zUuid, nUuid)!=HNAME_ERROR ){
        canonical16(zUuid, nUuid);
        db_multi_exec(
          "INSERT OR IGNORE INTO private"
          " SELECT rid FROM blob WHERE uuid = %Q;",
          zUuid);
      }
    }
    blob_reset(&fctx);
  }
}

/*
** COMMAND: reconstruct*
**
** Usage: %fossil reconstruct ?OPTIONS? FILENAME DIRECTORY
**
** This command studies the artifacts (files) in DIRECTORY and reconstructs the
** Fossil record from them.  It places the new Fossil repository in FILENAME.
** Subdirectories are read, files with leading '.' in the filename are ignored.
**
** Options:
**   -K|--keep-rid1     Read the filename of the artifact with RID=1 from the
**                      file .rid in DIRECTORY.
**   -P|--keep-private  Mark the artifacts listed in the file .private in
**                      DIRECTORY as private in the new Fossil repository.
*/
void reconstruct_cmd(void) {
  char *zPassword;
  int fKeepPrivate;
  fKeepRid1 = find_option("keep-rid1","K",0)!=0;
  fKeepPrivate = find_option("keep-private","P",0)!=0;
  if( g.argc!=4 ){
    usage("FILENAME DIRECTORY");
  }
  if( file_isdir(g.argv[3], ExtFILE)!=1 ){
    fossil_print("\"%s\" is not a directory\n\n", g.argv[3]);
    usage("FILENAME DIRECTORY");
  }
  db_create_repository(g.argv[2]);
  db_open_repository(g.argv[2]);

  /* We should be done with options.. */
  verify_all_options();

  db_open_config(0, 0);
  db_begin_transaction();
  db_initial_setup(0, 0, 0);

  fossil_print("Reading files from directory \"%s\"...\n", g.argv[3]);
  recon_read_dir(g.argv[3]);
  fossil_print("\nBuilding the Fossil repository...\n");

  rebuild_db(1, 1);

  /* Backwards compatibility: Mark check-ins with "+private" tags as private. */
  reconstruct_private_table();
  /* Newer method: Import the list of private artifacts to the PRIVATE table. */
  if( fKeepPrivate ){
    char *zFnDotPrivate = mprintf("%s/.private", g.argv[3]);
    private_import(zFnDotPrivate);
    free(zFnDotPrivate);
  }

  /* Skip the verify_before_commit() step on a reconstruct.  Most artifacts
  ** will have been changed and verification therefore takes a really, really
  ** long time.
  */
  verify_cancel();

  db_end_transaction(0);
  fossil_print("project-id: %s\n", db_get("project-code", 0));
  fossil_print("server-id: %s\n", db_get("server-code", 0));
  zPassword = db_text(0, "SELECT pw FROM user WHERE login=%Q", g.zLogin);
  fossil_print("admin-user: %s (initial password is \"%s\")\n", g.zLogin,
               zPassword);
  hash_user_password(g.zLogin);
}

/*
** COMMAND: deconstruct*
**
** Usage %fossil deconstruct ?OPTIONS? DESTINATION
**
** This command exports all artifacts of a given repository and writes all
** artifacts to the file system.  The DESTINATION directory will be populated
** with subdirectories AA and files AA/BBBBBBBBB.., where AABBBBBBBBB.. is the
** 40+ character artifact ID, AA the first 2 characters.
** If -L|--prefixlength is given, the length (default 2) of the directory prefix
** can be set to 0,1,..,9 characters.
**
** Options:
**   -R|--repository REPO        Deconstruct given REPOSITORY
**   -K|--keep-rid1              Save the filename of the artifact with RID=1 to
**                               the file .rid1 in the DESTINATION directory
**   -L|--prefixlength N         Set the length of the names of the DESTINATION
**                               subdirectories to N
**   --private                   Include private artifacts
**   -P|--keep-private           Save the list of private artifacts to the file
**                               .private in the DESTINATION directory (implies
**                               the --private option)
*/
void deconstruct_cmd(void){
  const char *zPrefixOpt;
  Stmt        s;
  int privateFlag;
  int fKeepPrivate;

  fKeepRid1 = find_option("keep-rid1","K",0)!=0;
  /* get and check prefix length argument and build format string */
  zPrefixOpt=find_option("prefixlength","L",1);
  if( !zPrefixOpt ){
    prefixLength = 2;
  }else{
    if( zPrefixOpt[0]>='0' && zPrefixOpt[0]<='9' && !zPrefixOpt[1] ){
      prefixLength = (int)(*zPrefixOpt-'0');
    }else{
      fossil_fatal("N(%s) is not a valid prefix length!",zPrefixOpt);
    }
  }
  /* open repository and open query for all artifacts */
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  privateFlag = find_option("private",0,0)!=0;
  fKeepPrivate = find_option("keep-private","P",0)!=0;
  if( fKeepPrivate ) privateFlag = 1;
  verify_all_options();
  /* check number of arguments */
  if( g.argc!=3 ){
    usage ("?OPTIONS? DESTINATION");
  }
  /* get and check argument destination directory */
  zDestDir = g.argv[g.argc-1];
  if( !*zDestDir  || !file_isdir(zDestDir, ExtFILE)) {
    fossil_fatal("DESTINATION(%s) is not a directory!",zDestDir);
  }
#ifndef _WIN32
  if( file_access(zDestDir, W_OK) ){
    fossil_fatal("DESTINATION(%s) is not writeable!",zDestDir);
  }
#else
  /* write access on windows is not checked, errors will be
  ** detected on blob_write_to_file
  */
#endif
  if( prefixLength ){
    zFNameFormat = mprintf("%s/%%.%ds/%%s",zDestDir,prefixLength);
  }else{
    zFNameFormat = mprintf("%s/%%s",zDestDir);
  }
  cchFNamePrefix = strlen(zDestDir);

  bag_init(&bagDone);
  ttyOutput = 1;
  processCnt = 0;
  if (!g.fQuiet) {
    fossil_print("0 (0%%)...\r");
    fflush(stdout);
  }
  totalSize = db_int(0, "SELECT count(*) FROM blob");
  db_prepare(&s,
     "SELECT rid, size FROM blob /*scan*/"
     " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
     "   AND NOT EXISTS(SELECT 1 FROM delta WHERE rid=blob.rid) %s",
     privateFlag==0 ? "AND rid NOT IN private" : ""
  );
  while( db_step(&s)==SQLITE_ROW ){
    int rid = db_column_int(&s, 0);
    int size = db_column_int(&s, 1);
    if( size>=0 ){
      Blob content;
      content_get(rid, &content);
      rebuild_step(rid, size, &content);
    }
  }
  db_finalize(&s);
  db_prepare(&s,
     "SELECT rid, size FROM blob"
     " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid) %s",
     privateFlag==0 ? "AND rid NOT IN private" : ""
  );
  while( db_step(&s)==SQLITE_ROW ){
    int rid = db_column_int(&s, 0);
    int size = db_column_int(&s, 1);
    if( size>=0 ){
      if( !bag_find(&bagDone, rid) ){
        Blob content;
        content_get(rid, &content);
        rebuild_step(rid, size, &content);
      }
    }
  }
  db_finalize(&s);

  /* Export the list of private artifacts. */
  if( fKeepPrivate ){
    char *zFnDotPrivate = mprintf("%s/.private", zDestDir);
    private_export(zFnDotPrivate);
    free(zFnDotPrivate);
  }

  if(!g.fQuiet && ttyOutput ){
    fossil_print("\n");
  }

  /* free filename format string */
  free(zFNameFormat);
  zFNameFormat = 0;
}
Added src/regexp.c.





















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2013 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
******************************************************************************
**
** This file was adapted from the ext/misc/regexp.c file in SQLite3.  That
** file is in the public domain.
**
** See ../www/grep.md for details of the algorithm and RE dialect.
**
**
**  The following regular expression syntax is supported:
**
**     X*      zero or more occurrences of X
**     X+      one or more occurrences of X
**     X?      zero or one occurrences of X
**     X{p,q}  between p and q occurrences of X
**     (X)     match X
**     X|Y     X or Y
**     ^X      X occurring at the beginning of the string
**     X$      X occurring at the end of the string
**     .       Match any single character
**     \c      Character c where c is one of \{}()[]|*+?.
**     \c      C-language escapes for c in afnrtv.  ex: \t or \n
**     \uXXXX  Where XXXX is exactly 4 hex digits, unicode value XXXX
**     \xXX    Where XX is exactly 2 hex digits, unicode value XX
**     [abc]   Any single character from the set abc
**     [^abc]  Any single character not in the set abc
**     [a-z]   Any single character in the range a-z
**     [^a-z]  Any single character not in the range a-z
**     \b      Word boundary
**     \w      Word character.  [A-Za-z0-9_]
**     \W      Non-word character
**     \d      Digit
**     \D      Non-digit
**     \s      Whitespace character
**     \S      Non-whitespace character
**
** A nondeterministic finite automaton (NFA) is used for matching, so the
** performance is bounded by O(N*M) where N is the size of the regular
** expression and M is the size of the input string.  The matcher never
** exhibits exponential behavior.  Note that the X{p,q} operator expands
** to p copies of X following by q-p copies of X? and that the size of the
** regular expression in the O(N*M) performance bound is computed after
** this expansion.
*/
#include "config.h"
#include "regexp.h"

/* The end-of-input character */
#define RE_EOF            0    /* End of input */

/* The NFA is implemented as sequence of opcodes taken from the following
** set.  Each opcode has a single integer argument.
*/
#define RE_OP_MATCH       1    /* Match the one character in the argument */
#define RE_OP_ANY         2    /* Match any one character.  (Implements ".") */
#define RE_OP_ANYSTAR     3    /* Special optimized version of .* */
#define RE_OP_FORK        4    /* Continue to both next and opcode at iArg */
#define RE_OP_GOTO        5    /* Jump to opcode at iArg */
#define RE_OP_ACCEPT      6    /* Halt and indicate a successful match */
#define RE_OP_CC_INC      7    /* Beginning of a [...] character class */
#define RE_OP_CC_EXC      8    /* Beginning of a [^...] character class */
#define RE_OP_CC_VALUE    9    /* Single value in a character class */
#define RE_OP_CC_RANGE   10    /* Range of values in a character class */
#define RE_OP_WORD       11    /* Perl word character [A-Za-z0-9_] */
#define RE_OP_NOTWORD    12    /* Not a perl word character */
#define RE_OP_DIGIT      13    /* digit:  [0-9] */
#define RE_OP_NOTDIGIT   14    /* Not a digit */
#define RE_OP_SPACE      15    /* space:  [ \t\n\r\v\f] */
#define RE_OP_NOTSPACE   16    /* Not a digit */
#define RE_OP_BOUNDARY   17    /* Boundary between word and non-word */

/* Each opcode is a "state" in the NFA */
typedef unsigned short ReStateNumber;

/* Because this is an NFA and not a DFA, multiple states can be active at
** once.  An instance of the following object records all active states in
** the NFA.  The implementation is optimized for the common case where the
** number of actives states is small.
*/
typedef struct ReStateSet {
  unsigned nState;            /* Number of current states */
  ReStateNumber *aState;      /* Current states */
} ReStateSet;

#if INTERFACE
/* An input string read one character at a time.
*/
struct ReInput {
  const unsigned char *z;  /* All text */
  int i;                   /* Next byte to read */
  int mx;                  /* EOF when i>=mx */
};

/* A compiled NFA (or an NFA that is in the process of being compiled) is
** an instance of the following object.
*/
struct ReCompiled {
  ReInput sIn;                /* Regular expression text */
  const char *zErr;           /* Error message to return */
  char *aOp;                  /* Operators for the virtual machine */
  int *aArg;                  /* Arguments to each operator */
  unsigned (*xNextChar)(ReInput*);  /* Next character function */
  unsigned char zInit[12];    /* Initial text to match */
  int nInit;                  /* Number of characters in zInit */
  unsigned nState;            /* Number of entries in aOp[] and aArg[] */
  unsigned nAlloc;            /* Slots allocated for aOp[] and aArg[] */
};
#endif

/* Add a state to the given state set if it is not already there */
static void re_add_state(ReStateSet *pSet, int newState){
  unsigned i;
  for(i=0; i<pSet->nState; i++) if( pSet->aState[i]==newState ) return;
  pSet->aState[pSet->nState++] = (ReStateNumber)newState;
}

/* Extract the next unicode character from *pzIn and return it.  Advance
** *pzIn to the first byte past the end of the character returned.  To
** be clear:  this routine converts utf8 to unicode.  This routine is
** optimized for the common case where the next character is a single byte.
*/
static unsigned re_next_char(ReInput *p){
  unsigned c;
  if( p->i>=p->mx ) return 0;
  c = p->z[p->i++];
  if( c>=0x80 ){
    if( (c&0xe0)==0xc0 && p->i<p->mx && (p->z[p->i]&0xc0)==0x80 ){
      c = (c&0x1f)<<6 | (p->z[p->i++]&0x3f);
      if( c<0x80 ) c = 0xfffd;
    }else if( (c&0xf0)==0xe0 && p->i+1<p->mx && (p->z[p->i]&0xc0)==0x80
           && (p->z[p->i+1]&0xc0)==0x80 ){
      c = (c&0x0f)<<12 | ((p->z[p->i]&0x3f)<<6) | (p->z[p->i+1]&0x3f);
      p->i += 2;
      if( c<=0x7ff || (c>=0xd800 && c<=0xdfff) ) c = 0xfffd;
    }else if( (c&0xf8)==0xf0 && p->i+3<p->mx && (p->z[p->i]&0xc0)==0x80
           && (p->z[p->i+1]&0xc0)==0x80 && (p->z[p->i+2]&0xc0)==0x80 ){
      c = (c&0x07)<<18 | ((p->z[p->i]&0x3f)<<12) | ((p->z[p->i+1]&0x3f)<<6)
                       | (p->z[p->i+2]&0x3f);
      p->i += 3;
      if( c<=0xffff || c>0x10ffff ) c = 0xfffd;
    }else{
      c = 0xfffd;
    }
  }
  return c;
}
static unsigned re_next_char_nocase(ReInput *p){
  unsigned c = re_next_char(p);
  return unicode_fold(c,2);
}

/* Return true if c is a perl "word" character:  [A-Za-z0-9_] */
static int re_word_char(int c){
  return unicode_isalnum(c) || c=='_';
}

/* Return true if c is a "digit" character:  [0-9] */
static int re_digit_char(int c){
  return (c>='0' && c<='9');
}

/* Return true if c is a perl "space" character:  [ \t\r\n\v\f] */
static int re_space_char(int c){
  return c==' ' || c=='\t' || c=='\n' || c=='\r' || c=='\v' || c=='\f';
}

/* Run a compiled regular expression on the zero-terminated input
** string zIn[].  Return true on a match and false if there is no match.
*/
int re_match(ReCompiled *pRe, const unsigned char *zIn, int nIn){
  ReStateSet aStateSet[2], *pThis, *pNext;
  ReStateNumber aSpace[100];
  ReStateNumber *pToFree;
  unsigned int i = 0;
  unsigned int iSwap = 0;
  int c = RE_EOF+1;
  int cPrev = 0;
  int rc = 0;
  ReInput in;

  in.z = zIn;
  in.i = 0;
  in.mx = nIn>=0 ? nIn : (int)strlen((char const*)zIn);

  /* Look for the initial prefix match, if there is one. */
  if( pRe->nInit ){
    unsigned char x = pRe->zInit[0];
    while( in.i+pRe->nInit<=in.mx
     && (zIn[in.i]!=x ||
         strncmp((const char*)zIn+in.i, (const char*)pRe->zInit, pRe->nInit)!=0)
    ){
      in.i++;
    }
    if( in.i+pRe->nInit>in.mx ) return 0;
  }

  if( pRe->nState<=(sizeof(aSpace)/(sizeof(aSpace[0])*2)) ){
    pToFree = 0;
    aStateSet[0].aState = aSpace;
  }else{
    pToFree = fossil_malloc( sizeof(ReStateNumber)*2*pRe->nState );
    if( pToFree==0 ) return -1;
    aStateSet[0].aState = pToFree;
  }
  aStateSet[1].aState = &aStateSet[0].aState[pRe->nState];
  pNext = &aStateSet[1];
  pNext->nState = 0;
  re_add_state(pNext, 0);
  while( c!=RE_EOF && pNext->nState>0 ){
    cPrev = c;
    c = pRe->xNextChar(&in);
    pThis = pNext;
    pNext = &aStateSet[iSwap];
    iSwap = 1 - iSwap;
    pNext->nState = 0;
    for(i=0; i<pThis->nState; i++){
      int x = pThis->aState[i];
      switch( pRe->aOp[x] ){
        case RE_OP_MATCH: {
          if( pRe->aArg[x]==c ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_ANY: {
          if( c!=0 ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_WORD: {
          if( re_word_char(c) ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_NOTWORD: {
          if( !re_word_char(c) && c!=0 ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_DIGIT: {
          if( re_digit_char(c) ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_NOTDIGIT: {
          if( !re_digit_char(c) && c!=0 ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_SPACE: {
          if( re_space_char(c) ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_NOTSPACE: {
          if( !re_space_char(c) && c!=0 ) re_add_state(pNext, x+1);
          break;
        }
        case RE_OP_BOUNDARY: {
          if( re_word_char(c)!=re_word_char(cPrev) ) re_add_state(pThis, x+1);
          break;
        }
        case RE_OP_ANYSTAR: {
          re_add_state(pNext, x);
          re_add_state(pThis, x+1);
          break;
        }
        case RE_OP_FORK: {
          re_add_state(pThis, x+pRe->aArg[x]);
          re_add_state(pThis, x+1);
          break;
        }
        case RE_OP_GOTO: {
          re_add_state(pThis, x+pRe->aArg[x]);
          break;
        }
        case RE_OP_ACCEPT: {
          rc = 1;
          goto re_match_end;
        }
        case RE_OP_CC_EXC: {
          if( c==0 ) break;
          /* fall-through */
        }
        case RE_OP_CC_INC: {
          int j = 1;
          int n = pRe->aArg[x];
          int hit = 0;
          for(j=1; j>0 && j<n; j++){
            if( pRe->aOp[x+j]==RE_OP_CC_VALUE ){
              if( pRe->aArg[x+j]==c ){
                hit = 1;
                j = -1;
              }
            }else{
              if( pRe->aArg[x+j]<=c && pRe->aArg[x+j+1]>=c ){
                hit = 1;
                j = -1;
              }else{
                j++;
              }
            }
          }
          if( pRe->aOp[x]==RE_OP_CC_EXC ) hit = !hit;
          if( hit ) re_add_state(pNext, x+n);
          break;
        }
      }
    }
  }
  for(i=0; i<pNext->nState; i++){
    if( pRe->aOp[pNext->aState[i]]==RE_OP_ACCEPT ){ rc = 1; break; }
  }
re_match_end:
  fossil_free(pToFree);
  return rc;
}

/* Resize the opcode and argument arrays for an RE under construction.
*/
static int re_resize(ReCompiled *p, int N){
  char *aOp;
  int *aArg;
  aOp = fossil_realloc(p->aOp, N*sizeof(p->aOp[0]));
  if( aOp==0 ) return 1;
  p->aOp = aOp;
  aArg = fossil_realloc(p->aArg, N*sizeof(p->aArg[0]));
  if( aArg==0 ) return 1;
  p->aArg = aArg;
  p->nAlloc = N;
  return 0;
}

/* Insert a new opcode and argument into an RE under construction.  The
** insertion point is just prior to existing opcode iBefore.
*/
static int re_insert(ReCompiled *p, int iBefore, int op, int arg){
  int i;
  if( p->nAlloc<=p->nState && re_resize(p, p->nAlloc*2) ) return 0;
  for(i=p->nState; i>iBefore; i--){
    p->aOp[i] = p->aOp[i-1];
    p->aArg[i] = p->aArg[i-1];
  }
  p->nState++;
  p->aOp[iBefore] = (char)op;
  p->aArg[iBefore] = arg;
  return iBefore;
}

/* Append a new opcode and argument to the end of the RE under construction.
*/
static int re_append(ReCompiled *p, int op, int arg){
  return re_insert(p, p->nState, op, arg);
}

/* Make a copy of N opcodes starting at iStart onto the end of the RE
** under construction.
*/
static void re_copy(ReCompiled *p, int iStart, int N){
  if( p->nState+N>=p->nAlloc && re_resize(p, p->nAlloc*2+N) ) return;
  memcpy(&p->aOp[p->nState], &p->aOp[iStart], N*sizeof(p->aOp[0]));
  memcpy(&p->aArg[p->nState], &p->aArg[iStart], N*sizeof(p->aArg[0]));
  p->nState += N;
}

/* Return true if c is a hexadecimal digit character:  [0-9a-fA-F]
** If c is a hex digit, also set *pV = (*pV)*16 + valueof(c).  If
** c is not a hex digit *pV is unchanged.
*/
static int re_hex(int c, int *pV){
  if( c>='0' && c<='9' ){
    c -= '0';
  }else if( c>='a' && c<='f' ){
    c -= 'a' - 10;
  }else if( c>='A' && c<='F' ){
    c -= 'A' - 10;
  }else{
    return 0;
  }
  *pV = (*pV)*16 + (c & 0xff);
  return 1;
}

/* A backslash character has been seen, read the next character and
** return its interpretation.
*/
static unsigned re_esc_char(ReCompiled *p){
  static const char zEsc[] = "afnrtv\\()*.+?[$^{|}]";
  static const char zTrans[] = "\a\f\n\r\t\v";
  int i, v = 0;
  char c;
  if( p->sIn.i>=p->sIn.mx ) return 0;
  c = p->sIn.z[p->sIn.i];
  if( c=='u' && p->sIn.i+4<p->sIn.mx ){
    const unsigned char *zIn = p->sIn.z + p->sIn.i;
    if( re_hex(zIn[1],&v)
     && re_hex(zIn[2],&v)
     && re_hex(zIn[3],&v)
     && re_hex(zIn[4],&v)
    ){
      p->sIn.i += 5;
      return v;
    }
  }
  if( c=='x' && p->sIn.i+2<p->sIn.mx ){
    const unsigned char *zIn = p->sIn.z + p->sIn.i;
    if( re_hex(zIn[1],&v)
     && re_hex(zIn[2],&v)
    ){
      p->sIn.i += 3;
      return v;
    }
  }
  for(i=0; zEsc[i] && zEsc[i]!=c; i++){}
  if( zEsc[i] ){
    if( i<6 ) c = zTrans[i];
    p->sIn.i++;
  }else{
    p->zErr = "unknown \\ escape";
  }
  return c;
}

/* Forward declaration */
static const char *re_subcompile_string(ReCompiled*);

/* Peek at the next byte of input */
static unsigned char rePeek(ReCompiled *p){
  return p->sIn.i<p->sIn.mx ? p->sIn.z[p->sIn.i] : 0;
}

/* Compile RE text into a sequence of opcodes.  Continue up to the
** first unmatched ")" character, then return.  If an error is found,
** return a pointer to the error message string.
*/
static const char *re_subcompile_re(ReCompiled *p){
  const char *zErr;
  int iStart, iEnd, iGoto;
  iStart = p->nState;
  zErr = re_subcompile_string(p);
  if( zErr ) return zErr;
  while( rePeek(p)=='|' ){
    iEnd = p->nState;
    re_insert(p, iStart, RE_OP_FORK, iEnd + 2 - iStart);
    iGoto = re_append(p, RE_OP_GOTO, 0);
    p->sIn.i++;
    zErr = re_subcompile_string(p);
    if( zErr ) return zErr;
    p->aArg[iGoto] = p->nState - iGoto;
  }
  return 0;
}

/* Compile an element of regular expression text (anything that can be
** an operand to the "|" operator).  Return NULL on success or a pointer
** to the error message if there is a problem.
*/
static const char *re_subcompile_string(ReCompiled *p){
  int iPrev = -1;
  int iStart;
  unsigned c;
  const char *zErr;
  while( (c = p->xNextChar(&p->sIn))!=0 ){
    iStart = p->nState;
    switch( c ){
      case '|':
      case '$':
      case ')': {
        p->sIn.i--;
        return 0;
      }
      case '(': {
        zErr = re_subcompile_re(p);
        if( zErr ) return zErr;
        if( rePeek(p)!=')' ) return "unmatched '('";
        p->sIn.i++;
        break;
      }
      case '.': {
        if( rePeek(p)=='*' ){
          re_append(p, RE_OP_ANYSTAR, 0);
          p->sIn.i++;
        }else{
          re_append(p, RE_OP_ANY, 0);
        }
        break;
      }
      case '*': {
        if( iPrev<0 ) return "'*' without operand";
        re_insert(p, iPrev, RE_OP_GOTO, p->nState - iPrev + 1);
        re_append(p, RE_OP_FORK, iPrev - p->nState + 1);
        break;
      }
      case '+': {
        if( iPrev<0 ) return "'+' without operand";
        re_append(p, RE_OP_FORK, iPrev - p->nState);
        break;
      }
      case '?': {
        if( iPrev<0 ) return "'?' without operand";
        re_insert(p, iPrev, RE_OP_FORK, p->nState - iPrev+1);
        break;
      }
      case '{': {
        int m = 0, n = 0;
        int sz, j;
        if( iPrev<0 ) return "'{m,n}' without operand";
        while( (c=rePeek(p))>='0' && c<='9' ){ m = m*10 + c - '0'; p->sIn.i++; }
        n = m;
        if( c==',' ){
          p->sIn.i++;
          n = 0;
          while( (c=rePeek(p))>='0' && c<='9' ){ n = n*10 + c-'0'; p->sIn.i++; }
        }
        if( c!='}' ) return "unmatched '{'";
        if( n>0 && n<m ) return "n less than m in '{m,n}'";
        p->sIn.i++;
        sz = p->nState - iPrev;
        if( m==0 ){
          if( n==0 ) return "both m and n are zero in '{m,n}'";
          re_insert(p, iPrev, RE_OP_FORK, sz+1);
          n--;
        }else{
          for(j=1; j<m; j++) re_copy(p, iPrev, sz);
        }
        for(j=m; j<n; j++){
          re_append(p, RE_OP_FORK, sz+1);
          re_copy(p, iPrev, sz);
        }
        if( n==0 && m>0 ){
          re_append(p, RE_OP_FORK, -sz);
        }
        break;
      }
      case '[': {
        int iFirst = p->nState;
        if( rePeek(p)=='^' ){
          re_append(p, RE_OP_CC_EXC, 0);
          p->sIn.i++;
        }else{
          re_append(p, RE_OP_CC_INC, 0);
        }
        while( (c = p->xNextChar(&p->sIn))!=0 ){
          if( c=='[' && rePeek(p)==':' ){
            return "POSIX character classes not supported";
          }
          if( c=='\\' ) c = re_esc_char(p);
          if( rePeek(p)=='-' ){
            re_append(p, RE_OP_CC_RANGE, c);
            p->sIn.i++;
            c = p->xNextChar(&p->sIn);
            if( c=='\\' ) c = re_esc_char(p);
            re_append(p, RE_OP_CC_RANGE, c);
          }else{
            re_append(p, RE_OP_CC_VALUE, c);
          }
          if( rePeek(p)==']' ){ p->sIn.i++; break; }
        }
        if( c==0 ) return "unclosed '['";
        p->aArg[iFirst] = p->nState - iFirst;
        break;
      }
      case '\\': {
        int specialOp = 0;
        switch( rePeek(p) ){
          case 'b': specialOp = RE_OP_BOUNDARY;   break;
          case 'd': specialOp = RE_OP_DIGIT;      break;
          case 'D': specialOp = RE_OP_NOTDIGIT;   break;
          case 's': specialOp = RE_OP_SPACE;      break;
          case 'S': specialOp = RE_OP_NOTSPACE;   break;
          case 'w': specialOp = RE_OP_WORD;       break;
          case 'W': specialOp = RE_OP_NOTWORD;    break;
        }
        if( specialOp ){
          p->sIn.i++;
          re_append(p, specialOp, 0);
        }else{
          c = re_esc_char(p);
          re_append(p, RE_OP_MATCH, c);
        }
        break;
      }
      default: {
        re_append(p, RE_OP_MATCH, c);
        break;
      }
    }
    iPrev = iStart;
  }
  return 0;
}

/* Free and reclaim all the memory used by a previously compiled
** regular expression.  Applications should invoke this routine once
** for every call to re_compile() to avoid memory leaks.
*/
void re_free(ReCompiled *pRe){
  if( pRe ){
    fossil_free(pRe->aOp);
    fossil_free(pRe->aArg);
    fossil_free(pRe);
  }
}

/*
** Compile a textual regular expression in zIn[] into a compiled regular
** expression suitable for us by re_match() and return a pointer to the
** compiled regular expression in *ppRe.  Return NULL on success or an
** error message if something goes wrong.
*/
const char *re_compile(ReCompiled **ppRe, const char *zIn, int noCase){
  ReCompiled *pRe;
  const char *zErr;
  int i, j;

  *ppRe = 0;
  pRe = fossil_malloc( sizeof(*pRe) );
  if( pRe==0 ){
    return "out of memory";
  }
  memset(pRe, 0, sizeof(*pRe));
  pRe->xNextChar = noCase ? re_next_char_nocase : re_next_char;
  if( re_resize(pRe, 30) ){
    re_free(pRe);
    return "out of memory";
  }
  if( zIn[0]=='^' ){
    zIn++;
  }else{
    re_append(pRe, RE_OP_ANYSTAR, 0);
  }
  pRe->sIn.z = (unsigned char*)zIn;
  pRe->sIn.i = 0;
  pRe->sIn.mx = (int)strlen(zIn);
  zErr = re_subcompile_re(pRe);
  if( zErr ){
    re_free(pRe);
    return zErr;
  }
  if( rePeek(pRe)=='$' && pRe->sIn.i+1>=pRe->sIn.mx ){
    re_append(pRe, RE_OP_MATCH, RE_EOF);
    re_append(pRe, RE_OP_ACCEPT, 0);
    *ppRe = pRe;
  }else if( pRe->sIn.i>=pRe->sIn.mx ){
    re_append(pRe, RE_OP_ACCEPT, 0);
    *ppRe = pRe;
  }else{
    re_free(pRe);
    return "unrecognized character";
  }

  /* The following is a performance optimization.  If the regex begins with
  ** ".*" (if the input regex lacks an initial "^") and afterwards there are
  ** one or more matching characters, enter those matching characters into
  ** zInit[].  The re_match() routine can then search ahead in the input
  ** string looking for the initial match without having to run the whole
  ** regex engine over the string.  Do not worry able trying to match
  ** unicode characters beyond plane 0 - those are very rare and this is
  ** just an optimization. */
  if( pRe->aOp[0]==RE_OP_ANYSTAR && !noCase ){
    for(j=0, i=1; j<(int)sizeof(pRe->zInit)-2 && pRe->aOp[i]==RE_OP_MATCH; i++){
      unsigned x = pRe->aArg[i];
      if( x<=127 ){
        pRe->zInit[j++] = (unsigned char)x;
      }else if( x<=0xfff ){
        pRe->zInit[j++] = (unsigned char)(0xc0 | (x>>6));
        pRe->zInit[j++] = 0x80 | (x&0x3f);
      }else if( x<=0xffff ){
        pRe->zInit[j++] = (unsigned char)(0xd0 | (x>>12));
        pRe->zInit[j++] = 0x80 | ((x>>6)&0x3f);
        pRe->zInit[j++] = 0x80 | (x&0x3f);
      }else{
        break;
      }
    }
    if( j>0 && pRe->zInit[j-1]==0 ) j--;
    pRe->nInit = j;
  }
  return pRe->zErr;
}

/*
** Implementation of the regexp() SQL function.  This function implements
** the build-in REGEXP operator.  The first argument to the function is the
** pattern and the second argument is the string.  So, the SQL statements:
**
**       A REGEXP B
**
** is implemented as regexp(B,A).
*/
static void re_sql_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  ReCompiled *pRe;          /* Compiled regular expression */
  const char *zPattern;     /* The regular expression */
  const unsigned char *zStr;/* String being searched */
  const char *zErr;         /* Compile error message */
  int setAux = 0;           /* True to invoke sqlite3_set_auxdata() */

  (void)argc;  /* Unused */
  pRe = sqlite3_get_auxdata(context, 0);
  if( pRe==0 ){
    zPattern = (const char*)sqlite3_value_text(argv[0]);
    if( zPattern==0 ) return;
    zErr = re_compile(&pRe, zPattern, sqlite3_user_data(context)!=0);
    if( zErr ){
      re_free(pRe);
      sqlite3_result_int(context, 0);
      /* sqlite3_result_error(context, zErr, -1); */
      return;
    }
    if( pRe==0 ){
      sqlite3_result_error_nomem(context);
      return;
    }
    setAux = 1;
  }
  zStr = (const unsigned char*)sqlite3_value_text(argv[1]);
  if( zStr!=0 ){
    sqlite3_result_int(context, re_match(pRe, zStr, -1));
  }
  if( setAux ){
    sqlite3_set_auxdata(context, 0, pRe, (void(*)(void*))re_free);
  }
}

/*
** Invoke this routine to register the regexp() function with the
** SQLite database connection.
*/
int re_add_sql_func(sqlite3 *db){
  int rc;
  rc = sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8|SQLITE_INNOCUOUS,
                               0, re_sql_func, 0, 0);
  if( rc==SQLITE_OK ){
    /* The regexpi(PATTERN,STRING) function is a case-insensitive version
    ** of regexp(PATTERN,STRING). */
    rc = sqlite3_create_function(db, "regexpi", 2, SQLITE_UTF8|SQLITE_INNOCUOUS,
                                 (void*)db, re_sql_func, 0, 0);
  }
  return rc;
}

/*
** Run a "grep" over a single file read from disk.
*/
static void grep_file(ReCompiled *pRe, const char *zFile, FILE *in){
  int ln = 0;
  int n;
  char zLine[2000];
  while( fgets(zLine, sizeof(zLine), in) ){
    ln++;
    n = (int)strlen(zLine);
    while( n && (zLine[n-1]=='\n' || zLine[n-1]=='\r') ) n--;
    if( re_match(pRe, (const unsigned char*)zLine, n) ){
      fossil_print("%s:%d:%.*s\n", zFile, ln, n, zLine);
    }
  }
}

/*
** Flags for grep_buffer()
*/
#define GREP_EXISTS    0x001    /* If any match, print only the name and stop */
#define GREP_QUIET     0x002    /* Return code only */

/*
** Run a "grep" over a text file
*/
static int grep_buffer(
  ReCompiled *pRe,
  const char *zName,
  const char *z,
  u32 flags
){
  int i, j, n, ln, cnt;
  for(i=j=ln=cnt=0; z[i]; i=j+1){
    for(j=i; z[j] && z[j]!='\n'; j++){}
    n = j - i;
    ln++;
    if( re_match(pRe, (const unsigned char*)(z+i), j-i) ){
      cnt++;
      if( flags & GREP_EXISTS ){
        if( (flags & GREP_QUIET)==0 && zName ) fossil_print("%s\n", zName);
        break;
      }
      if( (flags & GREP_QUIET)==0 ){
        if( cnt==1 && zName ){
          fossil_print("== %s\n", zName);
        }
        fossil_print("%d:%.*s\n", ln, n, z+i);
      }
    }
  }
  return cnt;
}

/*
** COMMAND: test-grep
**
** Usage: %fossil test-grep REGEXP [FILE...]
**
** Run a regular expression match over the named disk files, or against
** standard input if no disk files are named on the command-line.
**
** Options:
**   -i|--ignore-case    Ignore case
*/
void re_test_grep(void){
  ReCompiled *pRe;
  const char *zErr;
  int ignoreCase = find_option("ignore-case","i",0)!=0;
  if( g.argc<3 ){
    usage("REGEXP [FILE...]");
  }
  zErr = re_compile(&pRe, g.argv[2], ignoreCase);
  if( zErr ) fossil_fatal("%s", zErr);
  if( g.argc==3 ){
    grep_file(pRe, "-", stdin);
  }else{
    int i;
    for(i=3; i<g.argc; i++){
      FILE *in = fossil_fopen(g.argv[i], "rb");
      if( in==0 ){
        fossil_warning("cannot open \"%s\"", g.argv[i]);
      }else{
        grep_file(pRe, g.argv[i], in);
        fclose(in);
      }
    }
  }
  re_free(pRe);
}

/*
** COMMAND: grep
**
** Usage: %fossil grep [OPTIONS] PATTERN FILENAME ...
**
** Attempt to match the given POSIX extended regular expression PATTERN over
** all historic versions of FILENAME.  The search begins with the most recent
** version of the file and moves backwards in time.  Multiple FILENAMEs can
** be specified, in which case all named files are searched in reverse
** chronological order.
**
** For details of the supported regular expression dialect, see
** https://fossil-scm.org/fossil/doc/trunk/www/grep.md
**
** Options:
**     -c|--count                 Suppress normal output; instead print a count
**                                of the number of matching files
**     -i|--ignore-case           Ignore case
**     -l|--files-with-matches    List only hash for each match
**     --once                     Stop searching after the first match
**     -s|--no-messages           Suppress error messages about nonexistent
**                                or unreadable files
**     -v|--invert-match          Invert the sense of matching.  Show only
**                                files that have no matches. Implies -l
**     --verbose                  Show each file as it is analyzed
*/
void re_grep_cmd(void){
  u32 flags = 0;
  int bVerbose = 0;
  ReCompiled *pRe;
  const char *zErr;
  int ignoreCase = 0;
  Blob fullName;
  int ii;
  int nMatch = 0;
  int bNoMsg;
  int cntFlag;
  int bOnce;
  int bInvert;
  int nSearch = 0;
  Stmt q;


  if( find_option("ignore-case","i",0)!=0 ) ignoreCase = 1;
  if( find_option("files-with-matches","l",0)!=0 ) flags |= GREP_EXISTS;
  if( find_option("verbose",0,0)!=0 ) bVerbose = 1;
  if( find_option("quiet","q",0) ) flags |= GREP_QUIET|GREP_EXISTS;
  bNoMsg = find_option("no-messages","s",0)!=0;
  bOnce = find_option("once",0,0)!=0;
  bInvert = find_option("invert-match","v",0)!=0;
  if( bInvert ){
    flags |= GREP_QUIET|GREP_EXISTS;
  }
  cntFlag = find_option("count","c",0)!=0;
  if( cntFlag ){
    flags |= GREP_QUIET|GREP_EXISTS;
  }
  db_find_and_open_repository(0, 0);
  verify_all_options();
  if( g.argc<4 ){
    usage("REGEXP FILENAME ...");
  }
  zErr = re_compile(&pRe, g.argv[2], ignoreCase);
  if( zErr ) fossil_fatal("%s", zErr);

  add_content_sql_commands(g.db);
  db_multi_exec("CREATE TEMP TABLE arglist(iname,fname,fnid);");
  for(ii=3; ii<g.argc; ii++){
    const char *zTarget = g.argv[ii];
    if( file_tree_name(zTarget, &fullName, 0, 1) ){
      int fnid = db_int(0, "SELECT fnid FROM filename WHERE name=%Q",
                        blob_str(&fullName));
      if( !fnid ){
        if( bNoMsg ) continue;
        if( file_size(zTarget, ExtFILE)<0 ){
          fossil_fatal("no such file: %s", zTarget);
        }
        fossil_fatal("not a managed file: %s", zTarget);
      }else{
        db_multi_exec(
          "INSERT INTO arglist(iname,fname,fnid) VALUES(%Q,%Q,%d)",
          zTarget, blob_str(&fullName), fnid);
      }
    }
    blob_reset(&fullName);
  }
  db_prepare(&q,
    " SELECT"
    "   A.uuid,"       /* file hash */
    "   A.rid,"        /* file rid */
    "   B.uuid,"       /* check-in hash */
    "   datetime(min(event.mtime)),"  /* check-in time */
    "   arglist.iname"                /* file name */
    " FROM arglist, mlink, blob A, blob B, event"
    " WHERE mlink.mid=event.objid"
    "   AND mlink.fid=A.rid"
    "   AND mlink.mid=B.rid"
    "   AND mlink.fnid=arglist.fnid"
    " GROUP BY A.uuid"
    " ORDER BY min(event.mtime) DESC;"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFileHash = db_column_text(&q,0);
    int rid = db_column_int(&q,1);
    const char *zCkinHash = db_column_text(&q,2);
    const char *zDate = db_column_text(&q,3);
    const char *zFN = db_column_text(&q,4);
    char *zLabel;
    Blob cx;
    content_get(rid, &cx);
    zLabel = mprintf("%.16s %s %S checkin %S", zDate, zFN,zFileHash,zCkinHash);
    if( bVerbose ) fossil_print("Scanning: %s\n", zLabel);
    nSearch++;
    nMatch += grep_buffer(pRe, zLabel, blob_str(&cx), flags);
    blob_reset(&cx);
    if( bInvert && cntFlag==0 ){
      if( nMatch==0 ){
        fossil_print("== %s\n", zLabel);
        if( bOnce ) nMatch = 1;
      }else{
        nMatch = 0;
      }
    }
    fossil_free(zLabel);
    if( nMatch ){
      if( (flags & GREP_QUIET)!=0 ) break;
      if( bOnce ) break;
    }
  }
  db_finalize(&q);
  re_free(pRe);
  if( cntFlag ){
    if( bInvert ){
      fossil_print("%d\n", nSearch-nMatch);
    }else{
      fossil_print("%d\n", nMatch);
    }
  }
}
Added src/repolist.c.





































































































































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module contains code to implement the repository list page when
** "fossil server" or "fossil ui" is serving a directory full of repositories.
*/
#include "config.h"
#include "repolist.h"

#if INTERFACE
/*
** Return value from the remote_repo_info() command.  zRepoName is the
** input.  All other fields are outputs.
*/
struct RepoInfo {
  char *zRepoName;      /* Name of the repository file */
  int isValid;          /* True if zRepoName is a valid Fossil repository */
  int isRepolistSkin;   /* 1 or 2 if this repository wants to be the skin
                        ** for the repository list.  2 means do use this
                        ** repository but do not display it in the list. */
  char *zProjName;      /* Project Name.  Memory from fossil_malloc() */
  char *zLoginGroup;    /* Name of login group, or NULL.  Malloced() */
  double rMTime;        /* Last update.  Julian day number */
};
#endif

/*
** Discover information about the repository given by
** pRepo->zRepoName.  The discovered information is stored in other
** fields of the RepoInfo object.
*/
static void remote_repo_info(RepoInfo *pRepo){
  sqlite3 *db;
  sqlite3_stmt *pStmt;
  int rc;

  pRepo->isRepolistSkin = 0;
  pRepo->isValid = 0;
  pRepo->zProjName = 0;
  pRepo->zLoginGroup = 0;
  pRepo->rMTime = 0.0;

  g.dbIgnoreErrors++;
  rc = sqlite3_open_v2(pRepo->zRepoName, &db, SQLITE_OPEN_READWRITE, 0);
  if( rc ) goto finish_repo_list;
  rc = sqlite3_prepare_v2(db, "SELECT value FROM config"
                              " WHERE name='repolist-skin'",
                          -1, &pStmt, 0);
  if( rc ) goto finish_repo_list;
  if( sqlite3_step(pStmt)==SQLITE_ROW ){
    pRepo->isRepolistSkin = sqlite3_column_int(pStmt,0);
  }
  sqlite3_finalize(pStmt);
  if( rc ) goto finish_repo_list;
  rc = sqlite3_prepare_v2(db, "SELECT value FROM config"
                              " WHERE name='project-name'",
                          -1, &pStmt, 0);
  if( rc ) goto finish_repo_list;
  if( sqlite3_step(pStmt)==SQLITE_ROW ){
    pRepo->zProjName = fossil_strdup((char*)sqlite3_column_text(pStmt,0));
  }
  sqlite3_finalize(pStmt);
  rc = sqlite3_prepare_v2(db, "SELECT value FROM config"
                              " WHERE name='login-group-name'",
                          -1, &pStmt, 0);
  if( rc==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){
    pRepo->zLoginGroup = fossil_strdup((char*)sqlite3_column_text(pStmt,0));
  }
  sqlite3_finalize(pStmt);
  rc = sqlite3_prepare_v2(db, "SELECT max(mtime) FROM event", -1, &pStmt, 0);
  if( rc==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){
    pRepo->rMTime = sqlite3_column_double(pStmt,0);
  }
  pRepo->isValid = 1;
  sqlite3_finalize(pStmt);
finish_repo_list:
  g.dbIgnoreErrors--;
  sqlite3_close(db);
}

/*
** Generate a web-page that lists all repositories located under the
** g.zRepositoryName directory and return non-zero.
**
** For the special case when g.zRepositoryName is a non-chroot-jail "/",
** compose the list using the "repo:" entries in the global_config
** table of the configuration database.  These entries comprise all
** of the repositories known to the "all" command.  The special case
** processing is disallowed for chroot jails because g.zRepositoryName
** is always "/" inside a chroot jail and so it cannot be used as a flag
** to signal the special processing in that case.  The special case
** processing is intended for the "fossil all ui" command which never
** runs in a chroot jail anyhow.
**
** Or, if no repositories can be located beneath g.zRepositoryName,
** close g.db and return 0.
*/
int repo_list_page(void){
  Blob base;           /* document root for all repositories */
  int n = 0;           /* Number of repositories found */
  int allRepo;         /* True if running "fossil ui all".
                       ** False if a directory scan of base for repos */
  Blob html;           /* Html for the body of the repository list */
  char *zSkinRepo = 0; /* Name of the repository database used for skins */
  char *zSkinUrl = 0;  /* URL for the skin database */

  assert( g.db==0 );
  blob_init(&html, 0, 0);
  if( fossil_strcmp(g.zRepositoryName,"/")==0 && !g.fJail ){
    /* For the special case of the "repository directory" being "/",
    ** show all of the repositories named in the ~/.fossil database.
    **
    ** On unix systems, then entries are of the form "repo:/home/..."
    ** and on Windows systems they are like on unix, starting with a "/"
    ** or they can begin with a drive letter: "repo:C:/Users/...".  In either
    ** case, we want returned path to omit any initial "/".
    */
    db_open_config(1, 0);
    db_multi_exec(
       "CREATE TEMP VIEW sfile AS"
       "  SELECT ltrim(substr(name,6),'/') AS 'pathname' FROM global_config"
       "   WHERE name GLOB 'repo:*'"
    );
    allRepo = 1;
  }else{
    /* The default case:  All repositories under the g.zRepositoryName
    ** directory.
    */
    blob_init(&base, g.zRepositoryName, -1);
    sqlite3_open(":memory:", &g.db);
    db_multi_exec("CREATE TABLE sfile(pathname TEXT);");
    db_multi_exec("CREATE TABLE vfile(pathname);");
    vfile_scan(&base, blob_size(&base), 0, 0, 0, ExtFILE);
    db_multi_exec("DELETE FROM sfile WHERE pathname NOT GLOB '*[^/].fossil'"
#if USE_SEE
                  " AND pathname NOT GLOB '*[^/].efossil'"
#endif
    );
    allRepo = 0;
  }
  n = db_int(0, "SELECT count(*) FROM sfile");
  if( n==0 ){
    sqlite3_close(g.db);
    g.db = 0;
    g.repositoryOpen = 0;
    g.localOpen = 0;
    return 0;
  }else{
    Stmt q;
    double rNow;
    blob_append_sql(&html,
      "<table border='0' class='sortable' data-init-sort='1'"
      " data-column-types='txtxkxt'><thead>\n"
      "<tr><th>Filename<th width='20'>"
      "<th>Project Name<th width='20'>"
      "<th>Last Modified<th width='20'>"
      "<th>Login Group</tr>\n"
      "</thead><tbody>\n");
    db_prepare(&q, "SELECT pathname"
                   " FROM sfile ORDER BY pathname COLLATE nocase;");
    rNow = db_double(0, "SELECT julianday('now')");
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      int nName = (int)strlen(zName);
      int nSuffix = 7; /* ".fossil" */
      char *zUrl;
      char *zAge;
      char *zFull;
      RepoInfo x;
      sqlite3_int64 iAge;
#if USE_SEE
      int bEncrypted = sqlite3_strglob("*.efossil", zName)==0;
      if( bEncrypted ) nSuffix = 8; /* ".efossil" */
#endif
      if( nName<nSuffix ) continue;
      zUrl = sqlite3_mprintf("%.*s", nName-nSuffix, zName);
      if( zName[0]=='/'
#ifdef _WIN32
          || sqlite3_strglob("[a-zA-Z]:/*", zName)==0
#endif
      ){
        zFull = mprintf("%s", zName);
      }else if ( allRepo ){
        zFull = mprintf("/%s", zName);
      }else{
        zFull = mprintf("%s/%s", g.zRepositoryName, zName);
      }
      x.zRepoName = zFull;
      remote_repo_info(&x);
      if( x.isRepolistSkin ){
        if( zSkinRepo==0 ){
          zSkinRepo = mprintf("%s", x.zRepoName);
          zSkinUrl = mprintf("%s", zUrl);
        }
      }
      fossil_free(zFull);
      if( !x.isValid
#if USE_SEE
       && !bEncrypted
#endif
      ){
        continue;
      }
      if( x.isRepolistSkin==2 && !allRepo ){
        /* Repositories with repolist-skin==2 are omitted from directory
        ** scan lists, but included in "fossil all ui" lists */
        continue;
      }
      if( rNow <= x.rMTime ){
        x.rMTime = rNow;
      }else if( x.rMTime<0.0 ){
        x.rMTime = rNow;
      }
      iAge = (sqlite3_int64)((rNow - x.rMTime)*86400);
      zAge = human_readable_age(rNow - x.rMTime);
      if( x.rMTime==0.0 ){
        /* This repository has no entry in the "event" table.
        ** Its age will still be maximum, so data-sortkey will work. */
        zAge = mprintf("unknown");
      }
      blob_append_sql(&html, "<tr><td valign='top'>");
      if( !file_ends_with_repository_extension(zName,0) ){
        /* The "fossil server DIRECTORY" and "fossil ui DIRECTORY" commands
        ** do not work for repositories whose names do not end in ".fossil".
        ** So do not hyperlink those cases. */
        blob_append_sql(&html,"%h",zName);
      } else if( sqlite3_strglob("*/.*", zName)==0 ){
        /* Do not show hyperlinks for hidden repos */
        blob_append_sql(&html, "%h (hidden)", zName);
      } else if( allRepo && sqlite3_strglob("[a-zA-Z]:/?*", zName)!=0 ){
        blob_append_sql(&html,
          "<a href='%R/%T/home' target='_blank'>/%h</a>\n",
          zUrl, zName);
      }else if( file_ends_with_repository_extension(zName,1) ){
        /* As described in
        ** https://fossil-scm.org/forum/info/f50f647c97c72fc1: if
        ** foo.fossil and foo/bar.fossil both exist and we create a
        ** link to foo/bar/... then the URI dispatcher will instead
        ** see that as a link to foo.fossil. In such cases, do not
        ** emit a link to foo/bar.fossil. */
        char * zDirPart = file_dirname(zName);
        if( db_exists("SELECT 1 FROM sfile "
                      "WHERE pathname=(%Q || '.fossil') COLLATE nocase"
#if USE_SEE
                      "  OR pathname=(%Q || '.efossil') COLLATE nocase"
#endif
                      , zDirPart
#if USE_SEE
                      , zDirPart
#endif
        ) ){
          blob_append_sql(&html,
            "<s>%h</s> (directory/repo name collision)\n",
            zName);
        }else{
          blob_append_sql(&html,
            "<a href='%R/%T/home' target='_blank'>%h</a>\n",
            zUrl, zName);
        }
        fossil_free(zDirPart);
      }else{
        blob_append_sql(&html,
          "<a href='%R/%T/home' target='_blank'>%h</a>\n",
          zUrl, zName);
      }
      if( x.zProjName ){
        blob_append_sql(&html, "<td></td><td>%h</td>\n", x.zProjName);
        fossil_free(x.zProjName);
      }else{
        blob_append_sql(&html, "<td></td><td></td>\n");
      }
      blob_append_sql(&html,
        "<td></td><td data-sortkey='%08x'>%h</td>\n",
        (int)iAge, zAge);
      fossil_free(zAge);
      if( x.zLoginGroup ){
        blob_append_sql(&html, "<td></td><td>%h</td></tr>\n", x.zLoginGroup);
        fossil_free(x.zLoginGroup);
      }else{
        blob_append_sql(&html, "<td></td><td></td></tr>\n");
      }
      sqlite3_free(zUrl);
    }
    db_finalize(&q);
    blob_append_sql(&html,"</tbody></table>\n");
  }
  if( zSkinRepo ){
    char *zNewBase = mprintf("%s/%s", g.zBaseURL, zSkinUrl);
    g.zBaseURL = 0;
    set_base_url(zNewBase);
    db_open_repository(zSkinRepo);
    fossil_free(zSkinRepo);
    fossil_free(zSkinUrl);
  }
  if( g.repositoryOpen ){
    /* This case runs if remote_repo_info() found a repository
    ** that has the "repolist_skin" property set to non-zero and left
    ** that repository open in g.db.  Use the skin of that repository
    ** for display. */
    login_check_credentials();
    style_set_current_feature("repolist");
    style_header("Repository List");
    @ %s(blob_str(&html))
    style_table_sorter();
    style_finish_page();
  }else{
    /* If no repositories were found that had the "repolist_skin"
    ** property set, then use a default skin */
    @ <html>
    @ <head>
    @ <base href="%s(g.zBaseURL)/">
    @ <meta name="viewport" content="width=device-width, initial-scale=1.0">
    @ <title>Repository List</title>
    @ </head>
    @ <body>
    @ <h1 align="center">Fossil Repositories</h1>
    @ %s(blob_str(&html))
    @ <script>%s(builtin_text("sorttable.js"))</script>
    @ </body>
    @ </html>
  }
  blob_reset(&html);
  cgi_reply();
  return n;
}

/*
** COMMAND: test-list-page
**
** Usage: %fossil test-list-page DIRECTORY
**
** Show all repositories underneath DIRECTORY.  Or if DIRECTORY is "/"
** show all repositories in the ~/.fossil file.
*/
void test_list_page(void){
  if( g.argc<3 ){
    g.zRepositoryName = "/";
  }else{
    g.zRepositoryName = g.argv[2];
  }
  g.httpOut = stdout;
  repo_list_page();
}
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** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**  
**
** Code to generate the ticket listings
*/
#include "config.h"
#include <time.h>
#include "report.h"
#include <assert.h>

/* Forward references to static routines */
static void report_format_hints(void);

#ifndef SQLITE_RECURSIVE
#  define SQLITE_RECURSIVE            33
#endif

/* Settings that can be used to control ticket reports */
/*
** SETTING: ticket-default-report   width=80
** If this setting has a string value, then when the ticket
** search page query is blank, the report with this title is shown.
** If the setting is blank (default), then no report is shown.
*/

/*
** WEBPAGE: /reportlist
** WEBPAGE: reportlist
**
** Main menu for Tickets.
*/
void view_list(void){
  const char *zScript;
  Blob ril;   /* Report Item List */
  Stmt q;
  int rn = 0;
  int cnt = 0;
  char *defaultReport = db_get("ticket-default-report", 0);

  login_check_credentials();
  if( !g.perm.RdTkt && !g.perm.NewTkt ){
  if( !g.okRdTkt && !g.okNewTkt ){ login_needed(); return; }
    login_needed(g.anon.RdTkt || g.anon.NewTkt);
    return;
  }
  style_header("Ticket Main Menu");
  ticket_standard_submenu(T_ALL_BUT(T_REPLIST));
  if( g.thTrace ) Th_Trace("BEGIN_REPORTLIST<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_REPORTLIST<br>\n", -1);
  zScript = ticket_reportlist_code();
  if( g.thTrace ) Th_Trace("BEGIN_REPORTLIST_SCRIPT<br />\n", -1);
  
  if( g.thTrace ) Th_Trace("BEGIN_REPORTLIST_SCRIPT<br>\n", -1);

  blob_zero(&ril);
  ticket_init();

  db_prepare(&q, "SELECT rn, title, owner FROM reportfmt ORDER BY title");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTitle = db_column_text(&q, 1);
    const char *zOwner = db_column_text(&q, 2);
    if( zTitle[0] =='_' && !g.okTktFmt ){
    if( zTitle[0] =='_' && !g.perm.TktFmt ){
      continue;
    }
    rn = db_column_int(&q, 0);
    cnt++;
    blob_appendf(&ril, "<li>");
    if( zTitle[0] == '_' ){
      blob_appendf(&ril, "%s", zTitle);
    } else {
      blob_appendf(&ril, "<a href=\"rptview?rn=%d\" rel=\"nofollow\">%h</a>", rn, zTitle);
      blob_appendf(&ril, "%z%h</a>", href("%R/rptview/%d", rn), zTitle);
    }
    blob_appendf(&ril, "&nbsp;&nbsp;&nbsp;");
    if( g.okWrite && zOwner && zOwner[0] ){
      blob_appendf(&ril, "(by <i>%h</i></i>) ", zOwner);
    if( g.perm.Write && zOwner && zOwner[0] ){
      blob_appendf(&ril, "(by <i>%h</i>) ", zOwner);
    }
    if( g.okTktFmt ){
      blob_appendf(&ril, "[<a href=\"rptedit?rn=%d&amp;copy=1\" rel=\"nofollow\">copy</a>] ", rn);
    if( g.perm.TktFmt ){
      blob_appendf(&ril, "[%zcopy</a>] ",
                   href("%R/rptedit/%d?copy=1", rn));
    }
    if( g.perm.Admin
    if( g.okAdmin || (g.okWrTkt && zOwner && strcmp(g.zLogin,zOwner)==0) ){
      blob_appendf(&ril, "[<a href=\"rptedit?rn=%d\" rel=\"nofollow\">edit</a>] ", rn);
     || (g.perm.WrTkt && zOwner && fossil_strcmp(g.zLogin,zOwner)==0)
    ){
      blob_appendf(&ril, "[%zedit</a>]",
                         href("%R/rptedit/%d", rn));
    }
    if( g.okTktFmt ){
      blob_appendf(&ril, "[<a href=\"rptsql?rn=%d\" rel=\"nofollow\">sql</a>] ", rn);
    if( g.perm.TktFmt ){
      blob_appendf(&ril, "[%zsql</a>]",
                         href("%R/rptsql/%d", rn));
    }
    if( fossil_strcmp(zTitle, defaultReport)==0 ){
      blob_appendf(&ril, "&nbsp;↠default");
    }
    blob_appendf(&ril, "</li>\n");
  }
  db_finalize(&q);

  Th_Store("report_items", blob_str(&ril));
  

  Th_Render(zScript);
  

  blob_reset(&ril);
  if( g.thTrace ) Th_Trace("END_REPORTLIST<br />\n", -1);
  if( g.thTrace ) Th_Trace("END_REPORTLIST<br>\n", -1);

  style_footer();
  style_finish_page();
}

/*
** Remove whitespace from both ends of a string.
*/
char *trim_string(const char *zOrig){
  int i;
  while( isspace(*zOrig) ){ zOrig++; }
  while( fossil_isspace(*zOrig) ){ zOrig++; }
  i = strlen(zOrig);
  while( i>0 && isspace(zOrig[i-1]) ){ i--; }
  while( i>0 && fossil_isspace(zOrig[i-1]) ){ i--; }
  return mprintf("%.*s", i, zOrig);
}

/*
** Extract a numeric (integer) value from a string.
*/
char *extract_integer(const char *zOrig){
  if( zOrig == NULL || zOrig[0] == 0 ) return "";
  while( *zOrig && !isdigit(*zOrig) ){ zOrig++; }
  while( *zOrig && !fossil_isdigit(*zOrig) ){ zOrig++; }
  if( *zOrig ){
    /* we have a digit. atoi() will get as much of the number as it
    ** can. We'll run it through mprintf() to get a string. Not
    ** an efficient way to do it, but effective.
    */
    return mprintf("%d", atoi(zOrig));
  }
  return "";
}

/*
** Remove blank lines from the beginning of a string and
** all whitespace from the end. Removes whitespace preceeding a NL,
** which also converts any CRNL sequence into a single NL.
** all whitespace from the end. Removes whitespace preceding a LF,
** which also converts any CRLF sequence into a single LF.
*/
char *remove_blank_lines(const char *zOrig){
  int i, j, n;
  char *z;
  for(i=j=0; isspace(zOrig[i]); i++){ if( zOrig[i]=='\n' ) j = i+1; }
  for(i=j=0; fossil_isspace(zOrig[i]); i++){ if( zOrig[i]=='\n' ) j = i+1; }
  n = strlen(&zOrig[j]);
  while( n>0 && isspace(zOrig[j+n-1]) ){ n--; }
  while( n>0 && fossil_isspace(zOrig[j+n-1]) ){ n--; }
  z = mprintf("%.*s", n, &zOrig[j]);
  for(i=j=0; z[i]; i++){
    if( z[i+1]=='\n' && z[i]!='\n' && isspace(z[i]) ){
    if( z[i+1]=='\n' && z[i]!='\n' && fossil_isspace(z[i]) ){
      z[j] = z[i];
      while(isspace(z[j]) && z[j] != '\n' ){ j--; }
      while(fossil_isspace(z[j]) && z[j] != '\n' ){ j--; }
      j++;
      continue;
    }

    z[j++] = z[i];
  }
  z[j] = 0;
  return z;
}


/*********************************************************************/

/*
** This is the SQLite authorizer callback used to make sure that the
** SQL statements entered by users do not try to do anything untoward.
** If anything suspicious is tried, set *(char**)pError to an error
** message obtained from malloc.
**
** Use the "fossil test-db-prepare --auth-report SQL" command to perform
** manual testing of this authorizer.
*/
static int report_query_authorizer(
  void *pError,
  int code,
  const char *zArg1,
  const char *zArg2,
  const char *zArg3,
  const char *zArg4
){
  int rc = SQLITE_OK;
  if( *(char**)pError ){
    /* We've already seen an error.  No need to continue. */
    return SQLITE_OK;
    return SQLITE_DENY;
  }
  switch( code ){
    case SQLITE_SELECT:
    case SQLITE_RECURSIVE:
    case SQLITE_FUNCTION: {
      break;
    }
    case SQLITE_READ: {
      static const char *azAllowed[] = {
         "ticket",
      static const char *const azAllowed[] = {
         "backlink",
         "blob",
         "event",
         "filename",
         "json_each",
         "json_tree",
         "mlink",
         "plink",
         "event",
         "tag",
         "tagxref",
         "ticket",
         "ticketchng",
         "unversioned",
      };
      int i;
      for(i=0; i<sizeof(azAllowed)/sizeof(azAllowed[0]); i++){
        if( strcasecmp(zArg1, azAllowed[i])==0 ) break;
      }
      if( i>=sizeof(azAllowed)/sizeof(azAllowed[0]) ){
      int lwr = 0;
      int upr = count(azAllowed) - 1;
      int cmp = 0;
      if( zArg1==0 ){
        /* Some legacy versions of SQLite will sometimes send spurious
        ** READ authorizations that have no table name.  These can be
        ** ignored. */
        rc = SQLITE_IGNORE;
        break;
      }
      while( lwr<=upr ){
        int i = (lwr+upr)/2;
        cmp = fossil_stricmp(zArg1, azAllowed[i]);
        if( cmp<0 ){
          upr = i - 1;
        }else if( cmp>0 ){
          lwr = i + 1;
        }else{
          break;
        }
      }
      if( cmp ){
        /* Always ok to access tables whose names begin with "fx_" */
        cmp = sqlite3_strnicmp(zArg1, "fx_", 3);
      }
      if( cmp ){
        *(char**)pError = mprintf("access to table \"%s\" is restricted",zArg1);
        rc = SQLITE_DENY;
      }else if( !g.okRdAddr && strncmp(zArg2, "private_", 8)==0 ){
      }else if( !g.perm.RdAddr && sqlite3_strnicmp(zArg2, "private_", 8)==0 ){
        rc = SQLITE_IGNORE;
      }
      break;
    }
    default: {
      *(char**)pError = mprintf("only SELECT statements are allowed");
      rc = SQLITE_DENY;
      break;
    }
  }
  return rc;
}

/*
** Make sure the reportfmt table is up-to-date.  It should contain
** the "jx" column (as of version 2.21).  If it does not, add it.
**
** The "jx" column is intended to hold a JSON object containing optional
** key-value pairs.
*/
void report_update_reportfmt_table(void){
  if( db_table_has_column("repository","reportfmt","jx")==0 ){
    db_multi_exec("ALTER TABLE repository.reportfmt"
                  " ADD COLUMN jx TEXT DEFAULT '{}';");
  }
}

/*
** Activate the ticket report query authorizer. Must be followed by an
** eventual call to report_unrestrict_sql().
*/
void report_restrict_sql(char **pzErr){
  db_set_authorizer(report_query_authorizer,(void*)pzErr,"Ticket-Report");
  sqlite3_limit(g.db, SQLITE_LIMIT_VDBE_OP, 10000);
}
void report_unrestrict_sql(void){
  db_clear_authorizer();
}


/*
** Check the given SQL to see if is a valid query that does not
** attempt to do anything dangerous.  Return 0 on success and a
** pointer to an error message string (obtained from malloc) if
** there is a problem.
*/
char *verify_sql_statement(char *zSql){
  int i;
  char *zErr = 0;
  const char *zTail;
  sqlite3_stmt *pStmt;
  int rc;

  /* First make sure the SQL is a single query command by verifying that
  ** the first token is "SELECT" and that there are no unquoted semicolons.
  ** the first token is "SELECT" or "WITH" and that there are no unquoted
  ** semicolons.
  */
  for(i=0; isspace(zSql[i]); i++){}
  if( strncasecmp(&zSql[i],"select",6)!=0 ){
    return mprintf("The SQL must be a SELECT statement");
  for(i=0; fossil_isspace(zSql[i]); i++){}
  if( fossil_strnicmp(&zSql[i], "select", 6)!=0
      && fossil_strnicmp(&zSql[i], "with", 4)!=0 ){
    return mprintf("The SQL must be a SELECT or WITH statement");
  }
  for(i=0; zSql[i]; i++){
    if( zSql[i]==';' ){
      int bad;
      int c = zSql[i+1];
      zSql[i+1] = 0;
      bad = sqlite3_complete(zSql);
      zSql[i+1] = c;
      if( bad ){
        /* A complete statement basically means that an unquoted semi-colon
        ** was found. We don't actually check what's after that.
        */
        return mprintf("Semi-colon detected! "
                       "Only a single SQL statement is allowed");
      }
    }
  }
  

  /* Compile the statement and check for illegal accesses or syntax errors. */
  sqlite3_set_authorizer(g.db, report_query_authorizer, (void*)&zErr);
  rc = sqlite3_prepare(g.db, zSql, -1, &pStmt, &zTail);
  report_restrict_sql(&zErr);
  rc = sqlite3_prepare_v2(g.db, zSql, -1, &pStmt, &zTail);
  if( rc!=SQLITE_OK ){
    zErr = mprintf("Syntax error: %s", sqlite3_errmsg(g.db));
  }
  if( !sqlite3_stmt_readonly(pStmt) ){
    zErr = mprintf("SQL must not modify the database");
  }
  if( pStmt ){
    sqlite3_finalize(pStmt);
  }
  sqlite3_set_authorizer(g.db, 0, 0);
  report_unrestrict_sql();
  return zErr;
}

/*
** Get a report number from query parameters.  This can be done in various
** ways:
**
**   (1) (legacy)  rn=NNN  where NNN is the reportfmt.rn integer primary key.
**
**   (2) name=NNN where NNN is the rn.
**
**   (3) name=TAG where TAG matches reportfmt.jx->>tag
**
** Regardless of how the report is specified, return the primary key, rn.
** Return 0 if not found.
*/
static int report_number(void){
  int rn;
  const char *zName;
  char *zEnd;

  /* Case (1) */
  rn = atoi(PD("rn","0"));
  if( rn>0 ) return rn;

  zName = P("name");
  if( zName==0 || zName[0]==0 ) return 0;
  if( fossil_isdigit(zName[0])
   && (rn = strtol(zName, &zEnd, 10))>0
   && zEnd[0]==0
  ){
    /* Case 2 */
    return rn;
  }

  rn = db_int(0, "SELECT rn FROM reportfmt WHERE jx->>'tag'==%Q", zName);
  return rn;
}

/*
** WEBPAGE: /rptsql
** WEBPAGE: rptsql
** URL: /rptsql/N
**
** Display the SQL query used to generate a ticket report.  The N value
** is either the report number of a report tag.
*/
void view_see_sql(void){
  int rn;
  const char *zTitle;
  const char *zSQL;
  const char *zOwner;
  const char *zClrKey;
  Stmt q;

  login_check_credentials();
  if( !g.okTktFmt ){
    login_needed();
  if( !g.perm.TktFmt ){
    login_needed(g.anon.TktFmt);
    return;
  }
  rn = atoi(PD("rn","0"));
  rn = report_number();
  db_prepare(&q, "SELECT title, sqlcode, owner, cols "
                   "FROM reportfmt WHERE rn=%d",rn);
  style_set_current_feature("report");
  style_header("SQL For Report Format Number %d", rn);
  if( db_step(&q)!=SQLITE_ROW ){
    @ <p>Unknown report number: %d(rn)</p>
    style_footer();
    style_finish_page();
    db_finalize(&q);
    return;
  }
  zTitle = db_column_text(&q, 0);
  zSQL = db_column_text(&q, 1);
  zOwner = db_column_text(&q, 2);
  zClrKey = db_column_text(&q, 3);
  @ <table cellpadding=0 cellspacing=0 border=0>
  @ <tr><td valign="top" align="right">Title:</td><td width=15></td>
  @ <td colspan=3>%h(zTitle)</td></tr>
  @ <td colspan="3">%h(zTitle)</td></tr>
  @ <tr><td valign="top" align="right">Owner:</td><td></td>
  @ <td colspan=3>%h(zOwner)</td></tr>
  @ <td colspan="3">%h(zOwner)</td></tr>
  @ <tr><td valign="top" align="right">SQL:</td><td></td>
  @ <td valign="top"><pre>
  @ %h(zSQL)
  @ <code class="language-sql">%h(zSQL)</code>
  @ </pre></td>
  @ <td width=15></td><td valign="top">
  output_color_key(zClrKey, 0, "border=0 cellspacing=0 cellpadding=3");
  @ </td>
  @ </tr></table>
  report_format_hints();
  style_footer();
  style_finish_page();
  db_finalize(&q);
}

/*
** WEBPAGE: /rptnew
** WEBPAGE: /rptedit
** WEBPAGE: rptnew
** WEBPAGE: rptedit
**
** Create (/rptnew) or edit (/rptedit) a ticket report format.
** Query parameters:
**
**     name=N         Ticket report number or tag.
**     rn=N           Ticket report number (legacy).
**                       ^^^-- one of the two previous is required.
**     t=TITLE        Title of the report format
**     w=USER         Owner of the report format
**     s=SQL          SQL text used to implement the report
**     k=KEY          Color key
**     d=DESC         Optional descriptive text
**     m=MIMETYPE     Mimetype for DESC
**     x=TAG          Symbolic name for the report
*/
void view_edit(void){
  int rn;
  const char *zTitle;
  const char *zTitle;           /* Title of the report */
  const char *z;
  const char *zOwner;
  const char *zClrKey;
  char *zSQL;
  char *zErr = 0;
  const char *zOwner;           /* Owner of the report */
  const char *zClrKey;          /* Color key - used to add colors to lines */
  char *zSQL;                   /* The SQL text that gnerates the report */
  char *zErr = 0;               /* An error message */
  const char *zDesc;            /* Extra descriptive text about the report */
  const char *zMimetype;        /* Mimetype for zDesc */
  const char *zTag;             /* Symbolic name for this report */
  int dflt = P("dflt") ? 1 : 0;

  login_check_credentials();
  if( !g.okTktFmt ){
    login_needed();
  if( !g.perm.TktFmt ){
    login_needed(g.anon.TktFmt);
    return;
  }
  style_set_current_feature("report");
  /*view_add_functions(0);*/
  rn = atoi(PD("rn","0"));
  rn = report_number();
  zTitle = P("t");
  zOwner = PD("w",g.zLogin);
  z = P("s");
  zSQL = z ? trim_string(z) : 0;
  zClrKey = trim_string(PD("k",""));
  zDesc = trim_string(PD("d",""));
  zMimetype = P("m");
  zTag = P("x");
  report_update_reportfmt_table();
  if( rn>0 && P("del2") ){
  if( rn>0 && P("del2") && cgi_csrf_safe(2) ){
    login_verify_csrf_secret();
    db_multi_exec("DELETE FROM reportfmt WHERE rn=%d", rn);
    cgi_redirect("reportlist");
    return;
  }else if( rn>0 && P("del1") ){
  }else if( rn>0 && P("del1") && cgi_csrf_safe(2) ){
    zTitle = db_text(0, "SELECT title FROM reportfmt "
                         "WHERE rn=%d", rn);
    if( zTitle==0 ) cgi_redirect("reportlist");

    style_header("Are You Sure?");
    @ <form action="rptedit" method="POST">
    @ <form action="rptedit" method="post">
    @ <p>You are about to delete all traces of the report
    @ <strong>%h(zTitle)</strong> from
    @ the database.  This is an irreversible operation.  All records
    @ related to this report will be removed and cannot be recovered.</p>
    @
    @ <input type="hidden" name="rn" value="%d(rn)">
    login_insert_csrf_secret();
    @ <input type="submit" name="del2" value="Delete The Report">
    @ <input type="submit" name="can" value="Cancel">
    @ </form>
    style_footer();
    style_finish_page();
    return;
  }else if( P("can") ){
    /* user cancelled */
    cgi_redirect("reportlist");
    return;
  }
  if( zTitle && zSQL ){
    if( zSQL[0]==0 ){
      zErr = "Please supply an SQL query statement";
    }else if( (zTitle = trim_string(zTitle))[0]==0 ){
      zErr = "Please supply a title"; 
      zErr = "Please supply a title";
    }else{
      zErr = verify_sql_statement(zSQL);
    }
    if( zErr==0 ){
      login_verify_csrf_secret();
    if( zErr==0
     && db_exists("SELECT 1 FROM reportfmt WHERE title=%Q and rn<>%d",
                  zTitle, rn)
    ){
      zErr = mprintf("There is already another report named \"%h\"", zTitle);
    }
    if( zErr==0 && cgi_csrf_safe(2) ){
      if( zTag && zTag[0]==0 ) zTag = 0;
      if( zDesc && zDesc[0]==0 ){ zDesc = 0; zMimetype = 0; }
      if( zMimetype && zMimetype[0]==0 ){ zDesc = 0; zMimetype = 0; }
      if( rn>0 ){
        db_multi_exec(
        db_multi_exec("UPDATE reportfmt SET title=%Q, sqlcode=%Q,"
                      " owner=%Q, cols=%Q WHERE rn=%d",
           zTitle, zSQL, zOwner, zClrKey, rn);
            "UPDATE reportfmt SET title=%Q, sqlcode=%Q,"
            " owner=%Q, cols=%Q, mtime=now(), "
            " jx=json_patch(jx,json_object('desc',%Q,'descmt',%Q,'tag',%Q))"
            " WHERE rn=%d",
           zTitle, zSQL, zOwner, zClrKey, zDesc, zMimetype, zTag, rn);
      }else{
        db_multi_exec(
        db_multi_exec("INSERT INTO reportfmt(title,sqlcode,owner,cols) "
           "VALUES(%Q,%Q,%Q,%Q)",
           zTitle, zSQL, zOwner, zClrKey);
           "INSERT INTO reportfmt(title,sqlcode,owner,cols,mtime,jx) "
           "VALUES(%Q,%Q,%Q,%Q,now(),"
                  "json_object('desc',%Q,'descmt',%Q,'tag',%Q))",
           zTitle, zSQL, zOwner, zClrKey, zDesc, zMimetype, zTag);
        rn = db_last_insert_rowid();
      }
      if( dflt ){
        db_set("ticket-default-report", zTitle, 0);
      }else{
        char *defaultReport = db_get("ticket-default-report", 0);
        if( fossil_strcmp(zTitle, defaultReport)==0 ){
          db_set("ticket-default-report", "", 0);
        }
      }
      cgi_redirect(mprintf("rptview?rn=%d", rn));
      cgi_redirect(mprintf("rptview/%d", rn));
      return;
    }
  }else if( rn==0 ){
    zTitle = "";
    zSQL = ticket_report_template();
    zClrKey = ticket_key_template();
  }else{
    Stmt q;
    int hasJx = 0;
    zDesc = 0;
    zMimetype = 0;
    zTag = 0;
    db_prepare(&q, "SELECT title, sqlcode, owner, cols "
    db_prepare(&q, "SELECT title, sqlcode, owner, cols, json_valid(jx) "
                     "FROM reportfmt WHERE rn=%d",rn);
    if( db_step(&q)==SQLITE_ROW ){
      char *defaultReport = db_get("ticket-default-report", 0);
      zTitle = db_column_malloc(&q, 0);
      zSQL = db_column_malloc(&q, 1);
      zOwner = db_column_malloc(&q, 2);
      zClrKey = db_column_malloc(&q, 3);
      dflt = fossil_strcmp(zTitle, defaultReport)==0;
      hasJx = db_column_int(&q, 4);
    }
    db_finalize(&q);
    if( hasJx ){
      db_prepare(&q, "SELECT jx->>'desc', jx->>'descmt', jx->>'tag'"
                     "  FROM reportfmt WHERE rn=%d", rn);
      if( db_step(&q)==SQLITE_ROW ){
        zDesc = db_column_malloc(&q, 0);
        zMimetype = db_column_malloc(&q, 1);
        zTag = db_column_malloc(&q, 2);
      }
      db_finalize(&q);
    }
    if( P("copy") ){
      rn = 0;
      zTitle = mprintf("Copy Of %s", zTitle);
      zOwner = g.zLogin;
    }
  }
  if( zOwner==0 ) zOwner = g.zLogin;
  style_submenu_element("Cancel", "Cancel", "reportlist");
  style_submenu_element("Cancel", "%R/reportlist");
  if( rn>0 ){
    style_submenu_element("Delete", "Delete", "rptedit?rn=%d&del1=1", rn);
    style_submenu_element("Delete", "%R/rptedit/%d?del1=1", rn);
  }
  style_header(rn>0 ? "Edit Report Format":"Create New Report Format");
  style_header("%s", rn>0 ? "Edit Report Format":"Create New Report Format");
  if( zErr ){
    @ <blockquote><font color="#ff0000"><b>%h(zErr)</b></font></blockquote>
    @ <blockquote class="reportError">%h(zErr)</blockquote>
  }
  @ <form action="rptedit" method="POST">
  @ <form action="rptedit" method="post"><div>
  @ <input type="hidden" name="rn" value="%d(rn)">
  @ <p>Report Title:<br>
  @ <input type="text" name="t" value="%h(zTitle)" size="60"></p>
  @ <p>Enter a complete SQL query statement against the "TICKET" table:<br>
  @ <textarea name="s" rows="20" cols="80">%h(zSQL)</textarea>
  @ </p>
  login_insert_csrf_secret();
  if( g.okAdmin ){
  if( g.perm.Admin ){
    @ <p>Report owner:
    @ <input type="text" name="w" size="20" value="%h(zOwner)">
    @ </p>
    @ <p>Tag:
    @ <input type="text" name="x" size="20" value="%h(zTag?zTag:"")">
    @ </p>
  } else {
    @ <input type="hidden" name="w" value="%h(zOwner)">
    if( zTag && zTag[0] ){
      @ <input type="hidden" name="x" value="%h(zTag)">
    }
  }
  @ <p>Enter an optional color key in the following box.  (If blank, no
  @ color key is displayed.)  Each line contains the text for a single
  @ entry in the key.  The first token of each line is the background
  @ color for that line.<br>
  @ <textarea name="k" rows="8" cols="50">%h(zClrKey)</textarea>
  @ </p>

  @ <p>Optional human-readable description for this report<br>
  @ %z(href("%R/markup_help"))Markup style</a>:
  mimetype_option_menu(zMimetype, "m");
  @ <br><textarea aria-label="Description:" name="d" class="wikiedit" \
  @ cols="80" rows="15" wrap="virtual">%h(zDesc)</textarea>
  @ </p>

  @ <p><label><input type="checkbox" name="dflt" %s(dflt?"checked":"")> \
  @ Make this the default report</label></p>
  if( !g.okAdmin && strcmp(zOwner,g.zLogin)!=0 ){
  if( !g.perm.Admin && fossil_strcmp(zOwner,g.zLogin)!=0 ){
    @ <p>This report format is owned by %h(zOwner).  You are not allowed
    @ to change it.</p>
    @ </form>
    report_format_hints();
    style_footer();
    style_finish_page();
    return;
  }
  @ <input type="submit" value="Apply Changes">
  if( rn>0 ){
    @ <input type="submit" value="Delete This Report" name="del1">
  }
  @ </form>
  @ </div></form>
  report_format_hints();
  style_footer();
  style_finish_page();
}

/*
** Output a bunch of text that provides information about report
** formats
*/
static void report_format_hints(void){
  char *zSchema;
  zSchema = db_text(0,"SELECT sql FROM sqlite_master WHERE name='ticket'");
  zSchema = db_text(0,"SELECT sql FROM sqlite_schema WHERE name='ticket'");
  if( zSchema==0 ){
    zSchema = db_text(0,"SELECT sql FROM repository.sqlite_master"
    zSchema = db_text(0,"SELECT sql FROM repository.sqlite_schema"
                        " WHERE name='ticket'");
  }
  @ <hr><h3>TICKET Schema</h3>
  @ <blockquote><pre>
  @ %h(zSchema)
  @ <code class="language-sql">%h(zSchema)</code>
  @ </pre></blockquote>
  @ <h3>Notes</h3>
  @ <ul>
  @ <li><p>The SQL must consist of a single SELECT statement</p></li>
  @
  @ <li><p>If a column of the result set is named "#" then that column
  @ is assumed to hold a ticket number.  A hyperlink will be created from
  @ that column to a detailed view of the ticket.</p></li>
  @
  @ <li><p>If a column of the result set is named "bgcolor" then the content
  @ of that column determines the background color of the row.</p></li>
  @
  @ <li><p>The text of all columns prior to the first column whose name begins
  @ with underscore ("_") is shown character-for-character as it appears in
  @ the database.  In other words, it is assumed to have a mimetype of
  @ text/plain.
  @
  @ <li><p>The first column whose name begins with underscore ("_") and all
  @ subsequent columns are shown on their own rows in the table.  This might
  @ be useful for displaying the description of tickets.
  @ subsequent columns are shown on their own rows in the table and with
  @ wiki formatting.  In other words, such rows are shown with a mimetype
  @ of text/x-fossil-wiki.  This is recommended for the "description" field
  @ of tickets.
  @ </p></li>
  @
  @ <li><p>The query can join other tables in the database besides TICKET.
  @ </p></li>
  @ </ul>
  @
  @ <h3>Examples</h3>
  @ <p>In this example, the first column in the result set is named
  @ "bgcolor".  The value of this column is not displayed.  Instead, it
  @ selects the background color of each row based on the TICKET.STATUS
  @ field of the database.  The color key at the right shows the various
  @ color codes.</p>
  @ <table align="right" style="margin: 0 5px;" border=1 cellspacing=0 width=125>
  @ <tr bgcolor="#f2dcdc"><td align="center">new or active</td></tr>
  @ <tr bgcolor="#e8e8bd"><td align="center">review</td></tr>
  @ <tr bgcolor="#cfe8bd"><td align="center">fixed</td></tr>
  @ <tr bgcolor="#bde5d6"><td align="center">tested</td></tr>
  @ <tr bgcolor="#cacae5"><td align="center">defer</td></tr>
  @ <tr bgcolor="#c8c8c8"><td align="center">closed</td></tr>
  @ <table class="rpteditex">
  @ <tr style="background-color:#f2dcdc;"><td class="rpteditex">new or active</td></tr>
  @ <tr style="background-color:#e8e8bd;"><td class="rpteditex">review</td></tr>
  @ <tr style="background-color:#cfe8bd;"><td class="rpteditex">fixed</td></tr>
  @ <tr style="background-color:#bde5d6;"><td class="rpteditex">tested</td></tr>
  @ <tr style="background-color:#cacae5;"><td class="rpteditex">defer</td></tr>
  @ <tr style="background-color:#c8c8c8;"><td class="rpteditex">closed</td></tr>
  @ </table>
  @ <blockquote><pre>
  @ SELECT
  @   CASE WHEN status IN ('new','active') THEN '#f2dcdc'
  @        WHEN status='review' THEN '#e8e8bd'
  @        WHEN status='fixed' THEN '#cfe8bd'
  @        WHEN status='tested' THEN '#bde5d6'
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  @   priority AS 'Pri',
  @   title AS 'Title'
  @ FROM ticket
  @ </pre></blockquote>
  @ <p>To base the background color on the TICKET.PRIORITY or
  @ TICKET.SEVERITY fields, substitute the following code for the
  @ first column of the query:</p>
  @ <table align="right" style="margin: 0 5px;" border=1 cellspacing=0 width=125>
  @ <tr bgcolor="#f2dcdc"><td align="center">1</td></tr>
  @ <tr bgcolor="#e8e8bd"><td align="center">2</td></tr>
  @ <tr bgcolor="#cfe8bd"><td align="center">3</td></tr>
  @ <tr bgcolor="#cacae5"><td align="center">4</td></tr>
  @ <tr bgcolor="#c8c8c8"><td align="center">5</td></tr>
  @ <table class="rpteditex">
  @ <tr style="background-color:#f2dcdc;"><td class="rpteditex">1</td></tr>
  @ <tr style="background-color:#e8e8bd;"><td class="rpteditex">2</td></tr>
  @ <tr style="background-color:#cfe8bd;"><td class="rpteditex">3</td></tr>
  @ <tr style="background-color:#cacae5;"><td class="rpteditex">4</td></tr>
  @ <tr style="background-color:#c8c8c8;"><td class="rpteditex">5</td></tr>
  @ </table>
  @ <blockquote><pre>
  @ SELECT
  @   CASE priority WHEN 1 THEN '#f2dcdc'
  @        WHEN 2 THEN '#e8e8bd'
  @        WHEN 3 THEN '#cfe8bd'
  @        WHEN 4 THEN '#cacae5'
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  @    owner AS 'By',
  @    subsystem AS 'Subsys',
  @    sdate(changetime) AS 'Changed',
  @    assignedto AS 'Assigned',
  @    severity AS 'Svr',
  @    priority AS 'Pri',
  @    title AS 'Title',
  @    description AS '_Description',   -- When the column name begins with '_'
  @    remarks AS '_Remarks'            -- the data is shown on a separate row.
  @    description AS '_Description',  -- When the column name begins with '_'
  @    remarks AS '_Remarks'           -- content is rendered as wiki
  @  FROM ticket
  @ </pre></blockquote>
  @
  @ <p>Or, to see part of the description on the same row, use the
  @ <b>wiki()</b> function with some string manipulation. Using the
  @ <b>tkt()</b> function on the ticket number will also generate a linked
  @ field, but without the extra <i>edit</i> column:
  @ </p>
  @ <blockquote><pre>
  @  SELECT
  @    tkt(tn) AS '',
  @    title AS 'Title',
  @    wiki(substr(description,0,80)) AS 'Description'
  @  FROM ticket
  @ </pre></blockquote>
  @
}

#if 0 /* NOT USED */
static void column_header(int rn,const char *zCol, int nCol, int nSorted,
    const char *zDirection, const char *zExtra
){
  int set = (nCol==nSorted);
  int desc = !strcmp(zDirection,"DESC");

  /*
  ** Clicking same column header 3 times in a row resets any sorting.
  ** Note that we link to rptview, which means embedded reports will get
  ** sent to the actual report view page as soon as a user tries to do
  ** any sorting. I don't see that as a Bad Thing.
  */
  if(set && desc){
    @ <th bgcolor="%s(BG1)" class="bkgnd1">
    @   <a href="rptview?rn=%d(rn)%s(zExtra)">%h(zCol)</a></th>
  }else{
    if(set){
      @ <th bgcolor="%s(BG1)" class="bkgnd1"><a
    }else{
      @ <th><a
    }
    @ href="rptview?rn=%d(rn)&amp;order_by=%d(nCol)&amp;\
    @ order_dir=%s(desc?"ASC":"DESC")\
    @ %s(zExtra)">%h(zCol)</a></th>
  }
}
#endif

/*
** The state of the report generation.
*/
struct GenerateHTML {
  int rn;          /* Report number */
  int nCount;      /* Row number */
  int nCol;        /* Number of columns */
  int isMultirow;  /* True if multiple table rows per query result row */
  int iNewRow;     /* Index of first column that goes on separate row */
  int iBg;         /* Index of column that defines background color */
  int wikiFlags;   /* Flags passed into wiki_convert() */
  const char *zWikiStart;    /* HTML before display of multi-line wiki */
  const char *zWikiEnd;      /* HTML after display of multi-line wiki */
};

/*
** The callback function for db_query
*/
static int generate_html(
  void *pUser,     /* Pointer to output state */
  int nArg,        /* Number of columns in this result row */
  char **azArg,    /* Text of data in all columns */
  char **azName    /* Names of the columns */
  const char **azArg, /* Text of data in all columns */
  const char **azName /* Names of the columns */
){
  struct GenerateHTML *pState = (struct GenerateHTML*)pUser;
  int i;
  const char *zTid;  /* Ticket UUID.  (value of column named '#') */
  const char *zTid;  /* Ticket hash.  (value of column named '#') */
  int rn;            /* Report number */
  char *zBg = 0;     /* Use this background color */
  const char *zBg = 0; /* Use this background color */
  char zPage[30];    /* Text version of the ticket number */

  /* Get the report number
  */
  rn = pState->rn;

  /* Do initialization
  */
  if( pState->nCount==0 ){
    /* Turn off the authorizer.  It is no longer doing anything since the
    ** query has already been prepared.
    */
    sqlite3_set_authorizer(g.db, 0, 0);
    db_clear_authorizer();

    /* Figure out the number of columns, the column that determines background
    ** color, and whether or not this row of data is represented by multiple
    ** rows in the table.
    */
    pState->nCol = 0;
    pState->isMultirow = 0;
    pState->iNewRow = -1;
    pState->iBg = -1;
    for(i=0; i<nArg; i++){
      if( azName[i][0]=='b' && strcmp(azName[i],"bgcolor")==0 ){
      if( azName[i][0]=='b' && fossil_strcmp(azName[i],"bgcolor")==0 ){
        pState->iBg = i;
        continue;
      }
      if( g.okWrite && azName[i][0]=='#' ){
      if( g.perm.Write && azName[i][0]=='#' ){
        pState->nCol++;
      }
      if( !pState->isMultirow ){
        if( azName[i][0]=='_' ){
          pState->isMultirow = 1;
          pState->iNewRow = i;
          pState->wikiFlags = WIKI_NOBADLINKS;
          pState->zWikiStart = "";
          pState->zWikiEnd = "";
          if( P("plaintext") ){
            pState->wikiFlags |= WIKI_LINKSONLY;
            pState->zWikiStart = "<pre class='verbatim'>";
            pState->zWikiEnd = "</pre>";
            style_submenu_element("Formatted", "%R/rptview/%d", pState->rn);
          }else{
            style_submenu_element("Plaintext", "%R/rptview/%d?plaintext",
                                  pState->rn);
          }
        }else{
          pState->nCol++;
        }
      }
    }

    /* The first time this routine is called, output a table header
    */
    @ <tr>
    @ <thead><tr>
    zTid = 0;
    for(i=0; i<nArg; i++){
      char *zName = azName[i];
      const char *zName = azName[i];
      if( i==pState->iBg ) continue;
      if( pState->iNewRow>=0 && i>=pState->iNewRow ){
        if( g.okWrite && zTid ){
        if( g.perm.Write && zTid ){
          @ <th>&nbsp;</th>
          zTid = 0;
        }
        if( zName[0]=='_' ) zName++;
        @ </tr><tr><th colspan=%d(pState->nCol)>%h(zName)</th>
      }else{
        if( zName[0]=='#' ){
          zTid = zName;
        }
        @ <th>%h(zName)</th>
      }
    }
    if( g.okWrite && zTid ){
    if( g.perm.Write && zTid ){
      @ <th>&nbsp;</th>
    }
    @ </tr>
    @ </tr></thead><tbody>
  }
  if( azArg==0 ){
    @ <tr><td colspan="%d(pState->nCol)">
    @ <i>No records match the report criteria</i>
    @ </td></tr>
    return 0;
  }
  ++pState->nCount;

  /* Output the separator above each entry in a table which has multiple lines
  ** per database entry.
  */
  if( pState->iNewRow>=0 ){
    @ <tr><td colspan=%d(pState->nCol)><font size=1>&nbsp;</font></td></tr>
  }

  /* Output the data for this entry from the database
  */
  zBg = pState->iBg>=0 ? azArg[pState->iBg] : 0;
  if( zBg==0 ) zBg = "white";
  @ <tr bgcolor="%h(zBg)">
  @ <tr style="background-color:%h(zBg)">
  zTid = 0;
  zPage[0] = 0;
  for(i=0; i<nArg; i++){
    char *zData;
    const char *zData;
    if( i==pState->iBg ) continue;
    zData = azArg[i];
    if( zData==0 ) zData = "";
    if( pState->iNewRow>=0 && i>=pState->iNewRow ){
      if( zTid && g.okWrite ){
        @ <td valign="top"><a href="tktedit/%h(zTid)">edit</a></td>
      if( zTid && g.perm.Write ){
        @ <td valign="top">%z(href("%R/tktedit/%h",zTid))edit</a></td>
        zTid = 0;
      }
      if( zData[0] ){
        Blob content;
        @ </tr>
        @ </tr><tr bgcolor="%h(zBg)"><td colspan=%d(pState->nCol)>
        @ <tr style="background-color:%h(zBg)"><td colspan=%d(pState->nCol)>
        @ %s(pState->zWikiStart)
        blob_init(&content, zData, -1);
        wiki_convert(&content, 0, 0);
        wiki_convert(&content, 0, pState->wikiFlags);
        blob_reset(&content);
        @ %s(pState->zWikiEnd)
      }
    }else if( azName[i][0]=='#' ){
      zTid = zData;
      if( g.okHistory ){
        @ <td valign="top"><a href="tktview?name=%h(zData)">%h(zData)</a></td>
      }else{
        @ <td valign="top">%h(zData)</td>
      @ <td valign="top">%z(href("%R/tktview/%h",zData))%h(zData)</a></td>
      }
    }else if( zData[0]==0 ){
      @ <td valign="top">&nbsp;</td>
    }else{
      @ <td valign="top">
      @ %h(zData)
      @ </td>
    }
  }
  if( zTid && g.okWrite ){
    @ <td valign="top"><a href="tktedit/%h(zTid)">edit</a></td>
  if( zTid && g.perm.Write ){
    @ <td valign="top">%z(href("%R/tktedit/%h",zTid))edit</a></td>
  }
  @ </tr>
  return 0;
}

/*
** Output the text given in the argument.  Convert tabs and newlines into
** spaces.
*/
static void output_no_tabs(const char *z){
  while( z && z[0] ){
    int i, j;
    for(i=0; z[i] && (!isspace(z[i]) || z[i]==' '); i++){}
    for(i=0; z[i] && (!fossil_isspace(z[i]) || z[i]==' '); i++){}
    if( i>0 ){
      cgi_printf("%.*s", i, z);
    }
    for(j=i; isspace(z[j]); j++){}
    for(j=i; fossil_isspace(z[j]); j++){}
    if( j>i ){
      cgi_printf("%*s", j-i, "");
    }
    z += j;
  }
}

/*
** Output a row as a tab-separated line of text.
*/
static int output_tab_separated(
  void *pUser,     /* Pointer to row-count integer */
  int nArg,        /* Number of columns in this result row */
  char **azArg,    /* Text of data in all columns */
  char **azName    /* Names of the columns */
  const char **azArg, /* Text of data in all columns */
  const char **azName /* Names of the columns */
){
  int *pCount = (int*)pUser;
  int i;

  if( *pCount==0 ){
    for(i=0; i<nArg; i++){
      output_no_tabs(azName[i]);
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}

/*
** Generate HTML that describes a color key.
*/
void output_color_key(const char *zClrKey, int horiz, char *zTabArgs){
  int i, j, k;
  char *zSafeKey, *zToFree;
  while( isspace(*zClrKey) ) zClrKey++;
  const char *zSafeKey;
  char *zToFree;
  while( fossil_isspace(*zClrKey) ) zClrKey++;
  if( zClrKey[0]==0 ) return;
  @ <table %s(zTabArgs)>
  if( horiz ){
    @ <tr>
  }
  zToFree = zSafeKey = mprintf("%h", zClrKey);
  zSafeKey = zToFree = mprintf("%h", zClrKey);
  while( zSafeKey[0] ){
    while( isspace(*zSafeKey) ) zSafeKey++;
    for(i=0; zSafeKey[i] && !isspace(zSafeKey[i]); i++){}
    for(j=i; isspace(zSafeKey[j]); j++){}
    while( fossil_isspace(*zSafeKey) ) zSafeKey++;
    for(i=0; zSafeKey[i] && !fossil_isspace(zSafeKey[i]); i++){}
    for(j=i; fossil_isspace(zSafeKey[j]); j++){}
    for(k=j; zSafeKey[k] && zSafeKey[k]!='\n' && zSafeKey[k]!='\r'; k++){}
    if( !horiz ){
      cgi_printf("<tr bgcolor=\"%.*s\"><td>%.*s</td></tr>\n",
      cgi_printf("<tr style=\"background-color: %.*s;\"><td>%.*s</td></tr>\n",
        i, zSafeKey, k-j, &zSafeKey[j]);
    }else{
      cgi_printf("<td bgcolor=\"%.*s\">%.*s</td>\n",
      cgi_printf("<td style=\"background-color: %.*s;\">%.*s</td>\n",
        i, zSafeKey, k-j, &zSafeKey[j]);
    }
    zSafeKey += k;
  }
  free(zToFree);
  if( horiz ){
    @ </tr>
  }
  @ </table>
}

/*
** Execute a single read-only SQL statement.  Invoke xCallback() on each
** row.
*/
static int db_exec_readonly(
  sqlite3 *db,                /* The database on which the SQL executes */
  const char *zSql,           /* The SQL to be executed */
  int (*xCallback)(void*,int,const char**, const char**),
                              /* Invoke this callback routine */
  void *pArg,                 /* First argument to xCallback() */
  char **pzErrMsg             /* Write error messages here */
){
  int rc = SQLITE_OK;         /* Return code */
  const char *zLeftover;      /* Tail of unprocessed SQL */
  sqlite3_stmt *pStmt = 0;    /* The current SQL statement */
  const char **azCols = 0;    /* Names of result columns */
  int nCol;                   /* Number of columns of output */
  const char **azVals = 0;    /* Text of all output columns */
  int i;                      /* Loop counter */
  int nVar;                   /* Number of parameters */

  pStmt = 0;
  rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zLeftover);
  assert( rc==SQLITE_OK || pStmt==0 );
  if( rc!=SQLITE_OK ){
    return rc;
  }
  if( !pStmt ){
    /* this happens for a comment or white-space */
    return SQLITE_OK;
  }
  if( !sqlite3_stmt_readonly(pStmt) ){
    sqlite3_finalize(pStmt);
    return SQLITE_ERROR;
  }

  nVar = sqlite3_bind_parameter_count(pStmt);
  for(i=1; i<=nVar; i++){
    const char *zVar = sqlite3_bind_parameter_name(pStmt, i);
    if( zVar==0 ) continue;
    if( zVar[0]!='$' && zVar[0]!='@' && zVar[0]!=':' ) continue;
    if( !fossil_islower(zVar[1]) ) continue;
    if( strcmp(zVar, "$login")==0 ){
      sqlite3_bind_text(pStmt, i, g.zLogin, -1, SQLITE_TRANSIENT);
    }else{
      sqlite3_bind_text(pStmt, i, P(zVar+1), -1, SQLITE_TRANSIENT);
    }
  }
  nCol = sqlite3_column_count(pStmt);
  azVals = fossil_malloc(2*nCol*sizeof(const char*) + 1);
  while( (rc = sqlite3_step(pStmt))==SQLITE_ROW ){
    if( azCols==0 ){
      azCols = &azVals[nCol];
      for(i=0; i<nCol; i++){
        azCols[i] = sqlite3_column_name(pStmt, i);
      }
    }
    for(i=0; i<nCol; i++){
      azVals[i] = (const char *)sqlite3_column_text(pStmt, i);
    }
    if( xCallback(pArg, nCol, azVals, azCols) ){
      break;
    }
  }
  rc = sqlite3_finalize(pStmt);
  fossil_free((void *)azVals);
  return rc;
}

/*
** WEBPAGE: /rptview
** WEBPAGE: rptview
**
** Generate a report.  The rn query parameter is the report number
** corresponding to REPORTFMT.RN.  If the tablist query parameter exists,
** then the output consists of lines of tab-separated fields instead of
** an HTML table.
*/
void rptview_page(void){
  rptview_page_content(0, 1, 1);
}

/*
** Render a report.
*/
void rptview_page_content(
  const char *defaultTitleSearch, /* If rn and title query parameters are
                                     blank, search reports by this title. */
  int pageWrap, /* If true, render full page; otherwise, just the report */
  int redirectMissing /* If true and report not found, go to reportlist */
){
  int count = 0;
  int rn;
  int rn, rc;
  char *zSql;
  char *zTitle;
  char *zOwner;
  char *zClrKey;
  char *zDesc;
  char *zMimetype;
  int tabs;
  Stmt q;
  char *zErr1 = 0;
  char *zErr2 = 0;

  login_check_credentials();
  if( !g.okRdTkt ){ login_needed(); return; }
  if( !g.perm.RdTkt ){ login_needed(g.anon.RdTkt); return; }
  rn = atoi(PD("rn","0"));
  if( rn==0 ){
    cgi_redirect("reportlist");
    return;
  report_update_reportfmt_table();
  rn = report_number();
  }
  tabs = P("tablist")!=0;
  db_prepare(&q,
    "SELECT title, sqlcode, owner, cols, rn, jx->>'desc', jx->>'descmt'"
    "  FROM reportfmt WHERE rn=%d", rn);
  rc = db_step(&q);
  if( rc!=SQLITE_ROW ){
  /* view_add_functions(tabs); */
  db_prepare(&q,
    "SELECT title, sqlcode, owner, cols FROM reportfmt WHERE rn=%d", rn);
  if( db_step(&q)!=SQLITE_ROW ){
    cgi_redirect("reportlist");
    const char *titleSearch =
      defaultTitleSearch==0 || trim_string(defaultTitleSearch)[0]==0 ?
        P("title") : defaultTitleSearch;
    db_finalize(&q);
    db_prepare(&q,
      "SELECT title, sqlcode, owner, cols, rn, jx->>'desc', jx->>'descmt'"
      "  FROM reportfmt WHERE title GLOB %Q",
      titleSearch);
    rc = db_step(&q);
  }
  if( rc!=SQLITE_ROW ){
    db_finalize(&q);
    if( redirectMissing ) {
      cgi_redirect("reportlist");
    }
    return;
  }
  zTitle = db_column_malloc(&q, 0);
  zSql = db_column_malloc(&q, 1);
  zOwner = db_column_malloc(&q, 2);
  zClrKey = db_column_malloc(&q, 3);
  rn = db_column_int(&q,4);
  zDesc = db_column_malloc(&q, 5);
  zMimetype = db_column_malloc(&q, 6);
  db_finalize(&q);

  if( P("order_by") ){
    /*
    ** If the user wants to do a column sort, wrap the query into a sub
    ** query and then sort the results. This is a whole lot easier than
    ** trying to insert an ORDER BY into the query itself, especially
    ** if the query is already ordered.
    */
    int nField = atoi(P("order_by"));
    if( nField > 0 ){
      const char* zDir = PD("order_dir","");
      zDir = !strcmp("ASC",zDir) ? "ASC" : "DESC";
      zSql = mprintf("SELECT * FROM (%s) ORDER BY %d %s", zSql, nField, zDir);
    }
  }

  count = 0;
  if( !tabs ){
    struct GenerateHTML sState;
    struct GenerateHTML sState = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
    const char *zQS = PD("QUERY_STRING","");

    db_multi_exec("PRAGMA empty_result_callbacks=ON");
    style_set_current_feature("report");
    if( pageWrap ) {
      /* style_finish_page() should provide escaping via %h formatting */
      if( zQS[0] ){
        if( g.zExtra && g.zExtra[0] ){
    style_submenu_element("Raw", "Raw", 
      "rptview?tablist=1&%s", PD("QUERY_STRING",""));
    if( g.okAdmin 
       || (g.okTktFmt && g.zLogin && zOwner && strcmp(g.zLogin,zOwner)==0) ){
      style_submenu_element("Edit", "Edit", "rptedit?rn=%d", rn);
    }
    if( g.okTktFmt ){
      style_submenu_element("SQL", "SQL", "rptsql?rn=%d",rn);
    }
    if( g.okNewTkt ){
      style_submenu_element("New Ticket", "Create a new ticket",
          style_submenu_element("Raw","%R/%s/%s?tablist=1&%s",
                                  g.zPath, g.zExtra, zQS);
        }else{
          style_submenu_element("Raw","%R/%s?tablist=1&%s",g.zPath,zQS);
        }
        style_submenu_element("Reports","%R/reportlist?%s",zQS);
      } else {
        if( g.zExtra && g.zExtra[0] ){
          style_submenu_element("Raw","%R/%s/%s?tablist=1",g.zPath,g.zExtra);
        }else{
          style_submenu_element("Raw","%R/%s?tablist=1",g.zPath);
        }
        style_submenu_element("Reports","%R/reportlist");
      }
      if( g.perm.Admin
        || (g.perm.TktFmt && g.zLogin && fossil_strcmp(g.zLogin,zOwner)==0) ){
        style_submenu_element("Edit", "%R/rptedit/%d", rn);
      }
      if( g.perm.TktFmt ){
        style_submenu_element("SQL", "%R/rptsql/%d",rn);
      }
      if( g.perm.NewTkt ){
        style_submenu_element("New Ticket", "%R/tktnew");
        "%s/tktnew", g.zTop);
    }
    style_header(zTitle);
    output_color_key(zClrKey, 1, 
        "border=0 cellpadding=3 cellspacing=0 class=\"report\"");
    @ <table border=1 cellpadding=2 cellspacing=0 class="report">
      }
      style_header("%s", zTitle);
    }
    if( zDesc && zDesc[0] && zMimetype ){
      Blob src;
      blob_init(&src, zDesc, -1);
      wiki_render_by_mimetype(&src, zMimetype);
      blob_reset(&src);
      @ <br>
    }
    output_color_key(zClrKey, 1,
        "border=\"0\" cellpadding=\"3\" cellspacing=\"0\" class=\"report\"");
    @ <table border="1" cellpadding="2" cellspacing="0" class="report sortable"
    @  data-column-types='' data-init-sort='0'>
    sState.rn = rn;
    sState.nCount = 0;
    sqlite3_set_authorizer(g.db, report_query_authorizer, (void*)&zErr1);
    sqlite3_exec(g.db, zSql, generate_html, &sState, &zErr2);
    sqlite3_set_authorizer(g.db, 0, 0);
    @ </table>
    report_restrict_sql(&zErr1);
    db_exec_readonly(g.db, zSql, generate_html, &sState, &zErr2);
    report_unrestrict_sql();
    @ </tbody></table>
    if( zErr1 ){
      @ <p><font color="red"><b>Error: %h(zErr1)</b></font></p>
      @ <p class="reportError">Error: %h(zErr1)</p>
    }else if( zErr2 ){
      @ <p><font color="red"><b>Error: %h(zErr2)</b></font></p>
      @ <p class="reportError">Error: %h(zErr2)</p>
    }
    style_table_sorter();
    if( pageWrap ) {
    style_footer();
      style_finish_page();
    }
  }else{
    sqlite3_set_authorizer(g.db, report_query_authorizer, (void*)&zErr1);
    sqlite3_exec(g.db, zSql, output_tab_separated, &count, &zErr2);
    sqlite3_set_authorizer(g.db, 0, 0);
    report_restrict_sql(&zErr1);
    db_exec_readonly(g.db, zSql, output_tab_separated, &count, &zErr2);
    report_unrestrict_sql();
    cgi_set_content_type("text/plain");
  }
}

/*
** report number for full table ticket export
*/
static const char zFullTicketRptRn[] = "0";

/*
** report title for full table ticket export
*/
static const char zFullTicketRptTitle[] = "full ticket export";

/*
** show all reports, which can be used for ticket show.
** Output is written to stdout as tab delimited table
*/
void rpt_list_reports(void){
  Stmt q;
  fossil_print("Available reports:\n");
  fossil_print("%s\t%s\n","report number","report title");
  fossil_print("%s\t%s\n",zFullTicketRptRn,zFullTicketRptTitle);
  db_prepare(&q,"SELECT rn,title FROM reportfmt ORDER BY rn");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zRn = db_column_text(&q, 0);
    const char *zTitle = db_column_text(&q, 1);

    fossil_print("%s\t%s\n",zRn,zTitle);
  }
  db_finalize(&q);
}

/*
** user defined separator used by ticket show command
*/
static const char *zSep = 0;

/*
** select the quoting algorithm for "ticket show"
*/
#if INTERFACE
typedef enum eTktShowEnc { tktNoTab=0, tktFossilize=1 } tTktShowEncoding;
#endif
static tTktShowEncoding tktEncode = tktNoTab;

/*
** Output the text given in the argument.  Convert tabs and newlines into
** spaces.
*/
static void output_no_tabs_file(const char *z){
  switch( tktEncode ){
    case tktFossilize:
      { char *zFosZ;

        if( z && *z ){
          zFosZ = fossilize(z,-1);
          fossil_print("%s",zFosZ);
          free(zFosZ);
        }
        break;
      }
    default:
      while( z && z[0] ){
        int i, j;
        for(i=0; z[i] && (!fossil_isspace(z[i]) || z[i]==' '); i++){}
        if( i>0 ){
          fossil_print("%.*s", i, z);
        }
        for(j=i; fossil_isspace(z[j]); j++){}
        if( j>i ){
          fossil_print("%*s", j-i, "");
        }
        z += j;
      }
      break;
  }
}

/*
** Output a row as a tab-separated line of text.
*/
int output_separated_file(
  void *pUser,     /* Pointer to row-count integer */
  int nArg,        /* Number of columns in this result row */
  const char **azArg, /* Text of data in all columns */
  const char **azName /* Names of the columns */
){
  int *pCount = (int*)pUser;
  int i;

  if( *pCount==0 ){
    for(i=0; i<nArg; i++){
      output_no_tabs_file(azName[i]);
      fossil_print("%s", i<nArg-1 ? (zSep?zSep:"\t") : "\n");
    }
  }
  ++*pCount;
  for(i=0; i<nArg; i++){
    output_no_tabs_file(azArg[i]);
    fossil_print("%s", i<nArg-1 ? (zSep?zSep:"\t") : "\n");
  }
  return 0;
}

/*
** Generate a report.  The rn query parameter is the report number.
** The output is written to stdout as flat file. The zFilter parameter
** is a full WHERE-condition.
*/
void rptshow(
    const char *zRep,
    const char *zSepIn,
    const char *zFilter,
    tTktShowEncoding enc
){
  Stmt q;
  char *zSql;
  char *zErr1 = 0;
  char *zErr2 = 0;
  int count = 0;
  int rn;

  if( !zRep || !strcmp(zRep,zFullTicketRptRn)
      || !strcmp(zRep,zFullTicketRptTitle) ){
    zSql = "SELECT * FROM ticket";
  }else{
    rn = atoi(zRep);
    if( rn ){
      db_prepare(&q,
       "SELECT sqlcode FROM reportfmt WHERE rn=%d", rn);
    }else{
      db_prepare(&q,
       "SELECT sqlcode FROM reportfmt WHERE title=%Q", zRep);
    }
    if( db_step(&q)!=SQLITE_ROW ){
      db_finalize(&q);
      rpt_list_reports();
      fossil_fatal("unknown report format(%s)!",zRep);
    }
    zSql = db_column_malloc(&q, 0);
    db_finalize(&q);
  }
  if( zFilter ){
    zSql = mprintf("SELECT * FROM (%s) WHERE %s",zSql,zFilter);
  }
  count = 0;
  tktEncode = enc;
  zSep = zSepIn;
  report_restrict_sql(&zErr1);
  db_exec_readonly(g.db, zSql, output_separated_file, &count, &zErr2);
  report_unrestrict_sql();
  if( zFilter ){
    free(zSql);
  }
}
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**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to create a RSS feed for the CGI interface.
*/
#include "config.h"
#include "rss.h"
#include <assert.h>
#include <time.h>
#include <time.h>
#include "rss.h"
#include <assert.h>

/*
** WEBPAGE: timeline.rss
** URL:  /timeline.rss?y=TYPE&n=LIMIT&tkt=HASH&tag=TAG&wiki=NAME&name=FILENAME
**
** Produce an RSS feed of the timeline.
**
** TYPE may be: all, ci (show check-ins only), t (show ticket changes only),
** w (show wiki only), e (show tech notes only), f (show forum posts only),
** g (show tag/branch changes only).
**
** LIMIT is the number of items to show.
**
** tkt=HASH filters for only those events for the specified ticket. tag=TAG
** filters for a tag, and wiki=NAME for a wiki page. Only one may be used.
**
** In addition, name=FILENAME filters for a specific file. This may be
** combined with one of the other filters (useful for looking at a specific
** branch).
*/
void page_timeline_rss(void){
  Stmt q;
  int nLine=0;
  char *zPubDate, *zProjectName, *zProjectDescr, *zFreeProjectName=0;
  Blob bSQL;
  const char *zType = PD("y","all"); /* Type of events.  All if NULL */
  const char *zTicketUuid = PD("tkt",NULL);
  const char *zTag = PD("tag",NULL);
  const char *zFilename = PD("name",NULL);
  const char *zWiki = PD("wiki",NULL);
  int nLimit = atoi(PD("n","20"));
  int nTagId;
  const char zSQL1[] =
    @ SELECT
    @   blob.rid,
    @   uuid,
    @   event.mtime,
    @   event.type,
    @   coalesce(ecomment,comment),
    @   coalesce(euser,user),
    @   (SELECT count(*) FROM plink WHERE pid=blob.rid AND isprim),
    @   (SELECT count(*) FROM plink WHERE cid=blob.rid)
    @   (SELECT count(*) FROM plink WHERE cid=blob.rid),
    @   (SELECT group_concat(substr(tagname,5), ', ') FROM tag, tagxref
    @     WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0) AS tags
    @ FROM event, blob
    @ WHERE blob.rid=event.objid
  ;

  login_check_credentials();
  if( !g.okRead && !g.okRdTkt && !g.okRdWiki ){ 
  if( !g.perm.Read && !g.perm.RdTkt && !g.perm.RdWiki ){
    return;
  }

  blob_zero(&bSQL);
  blob_append( &bSQL, zSQL1, -1 );
  blob_append_sql( &bSQL, "%s", zSQL1/*safe-for-%s*/ );

  if( zType[0]!='a' ){
    if( zType[0]=='c' && !g.okRead ) zType = "x";
    if( zType[0]=='w' && !g.okRdWiki ) zType = "x";
    if( zType[0]=='t' && !g.okRdTkt ) zType = "x";
    blob_appendf(&bSQL, " AND event.type=%Q", zType);
    if( zType[0]=='c' && !g.perm.Read ) zType = "x";
    else if( (zType[0]=='w' || zType[0]=='e') && !g.perm.RdWiki ) zType = "x";
    else if( zType[0]=='t' && !g.perm.RdTkt ) zType = "x";
    else if( zType[0]=='f' && !g.perm.RdForum ) zType = "x";
    blob_append_sql(&bSQL, " AND event.type=%Q", zType);
  }else{
    if( !g.okRead ){
      if( g.okRdTkt && g.okRdWiki ){
        blob_append(&bSQL, " AND event.type!='ci'", -1);
      }else if( g.okRdTkt ){
        blob_append(&bSQL, " AND event.type=='t'", -1);
      }else{
        blob_append(&bSQL, " AND event.type=='w'", -1);
      }
    }else if( !g.okRdWiki ){
    blob_append_sql(&bSQL, " AND event.type in (");
    if( g.perm.Read ){
      blob_append_sql(&bSQL, "'ci',");
    }
    if( g.perm.RdTkt ){
      blob_append_sql(&bSQL, "'t',");
    }
    if( g.perm.RdWiki ){
      if( g.okRdTkt ){
        blob_append(&bSQL, " AND event.type!='w'", -1);
      }else{
        blob_append(&bSQL, " AND event.type=='ci'", -1);
      }
      blob_append_sql(&bSQL, "'w','e',");
    }
    if( g.perm.RdForum ){
      blob_append_sql(&bSQL, "'f',");
    }
    }else if( !g.okRdTkt ){
      assert( !g.okRdTkt &&& g.okRead && g.okRdWiki );
      blob_append(&bSQL, " AND event.type!='t'", -1);
    }
  }

  blob_append( &bSQL, " ORDER BY event.mtime DESC", -1 );
    blob_append_sql(&bSQL, "'x')");
  }

  if( zTicketUuid ){
    nTagId = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",
      zTicketUuid);
    if ( nTagId==0 ){
      nTagId = -1;
    }
  }else if( zTag ){
    nTagId = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'sym-%q*'",
      zTag);
    if ( nTagId==0 ){
      nTagId = -1;
    }
  }else if( zWiki ){
    nTagId = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'wiki-%q*'",
      zWiki);
    if ( nTagId==0 ){
      nTagId = -1;
    }
  }else{
    nTagId = 0;
  }

  if( nTagId==-1 ){
    blob_append_sql(&bSQL, " AND 0");
  }else if( nTagId!=0 ){
    blob_append_sql(&bSQL, " AND (EXISTS(SELECT 1 FROM tagxref"
      " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid))", nTagId);
  }

  if( zFilename ){
    blob_append_sql(&bSQL,
      " AND (SELECT mlink.fnid FROM mlink WHERE event.objid=mlink.mid) "
      " IN (SELECT fnid FROM filename WHERE name=%Q %s)",
        zFilename, filename_collation()
    );
  }

  blob_append_sql( &bSQL, " ORDER BY event.mtime DESC" );

  cgi_set_content_type("application/rss+xml");

  zProjectName = db_get("project-name", 0);
  if( zProjectName==0 ){
    zFreeProjectName = zProjectName = mprintf("Fossil source repository for: %s",
      g.zBaseURL);
    zFreeProjectName = zProjectName =
      mprintf("Fossil source repository for: %s", g.zBaseURL);
  }
  zProjectDescr = db_get("project-description", 0);
  if( zProjectDescr==0 ){
    zProjectDescr = zProjectName;
  }

  zPubDate = cgi_rfc822_datestamp(time(NULL));

  @ <?xml version="1.0"?>
  @ <rss version="2.0">
  @ <rss xmlns:dc="http://purl.org/dc/elements/1.1/" version="2.0">
  @   <channel>
  @     <title>%h(zProjectName)</title>
  @     <link>%s(g.zBaseURL)</link>
  @     <description>%h(zProjectDescr)</description>
  @     <pubDate>%s(zPubDate)</pubDate>
  @     <generator>Fossil version %s(MANIFEST_VERSION) %s(MANIFEST_DATE)</generator>
  free(zPubDate);
  db_prepare(&q, blob_str(&bSQL));
  db_prepare(&q, "%s", blob_sql_text(&bSQL));
  blob_reset( &bSQL );
  while( db_step(&q)==SQLITE_ROW && nLine<=nLimit ){
  while( db_step(&q)==SQLITE_ROW && nLine<nLimit ){
    const char *zId = db_column_text(&q, 1);
    const char *zEType = db_column_text(&q, 3);
    const char *zCom = db_column_text(&q, 4);
    const char *zAuthor = db_column_text(&q, 5);
    char *zPrefix = "";
    char *zSuffix = 0;
    char *zDate;
    int nChild = db_column_int(&q, 5);
    int nParent = db_column_int(&q, 7);
    const char *zTagList = db_column_text(&q, 8);
    time_t ts;

    if( zTagList && zTagList[0]==0 ) zTagList = 0;
    ts = (time_t)((db_column_double(&q,2) - 2440587.5)*86400.0);
    zDate = cgi_rfc822_datestamp(ts);

    if('c'==zEType[0]){
      if( nParent>1 && nChild>1 ){
        zPrefix = "*MERGE/FORK* ";
      }else if( nParent>1 ){
        zPrefix = "*MERGE* ";
      }else if( nChild>1 ){
        zPrefix = "*FORK* ";
      }
    }else if('w'==zEType[0]){
      switch(zCom ? zCom[0] : 0){
        case ':': zPrefix = "Edit wiki page: "; break;
        case '+': zPrefix = "Add wiki page: "; break;
        case '-': zPrefix = "Delete wiki page: "; break;
      }
      if(*zPrefix) ++zCom;
    }

    if( zTagList ){
      zSuffix = mprintf(" (tags: %s)", zTagList);
    }

    @     <item>
    @       <title>%s(zPrefix)%h(zCom)%h(zSuffix)</title>
    @       <link>%s(g.zBaseURL)/info/%s(zId)</link>
    @       <description>%s(zPrefix)%h(zCom)%h(zSuffix)</description>
    @       <pubDate>%s(zDate)</pubDate>
    @       <dc:creator>%h(zAuthor)</dc:creator>
    @       <guid>%s(g.zBaseURL)/info/%s(zId)</guid>
    @     </item>
    free(zDate);
    free(zSuffix);
    nLine++;
  }

  db_finalize(&q);
  @   </channel>
  @ </rss>

  if( zFreeProjectName != 0 ){
    free( zFreeProjectName );
  }
}

/*
** COMMAND: rss*
**
** Usage: %fossil rss ?OPTIONS?
**
** The CLI variant of the /timeline.rss page, this produces an RSS
** feed of the timeline to stdout.
**
** Options:
**   -type|y FLAG    May be: all (default), ci (show check-ins only),
**                   t (show tickets only),  w (show wiki only)
**
**   -limit|n LIMIT  The maximum number of items to show
**
**   -tkt HASH       Filter for only those events for the specified ticket
**
**   -tag TAG        Filter for a tag
**
**   -wiki NAME      Filter on a specific wiki page
**
** Only one of -tkt, -tag, or -wiki may be used.
**
**   -name FILENAME  Filter for a specific file. This may be combined
**                   with one of the other filters (useful for looking
**                   at a specific branch).
**
**   -url STRING     Set the RSS feed's root URL to the given string.
**                   The default is "URL-PLACEHOLDER" (without quotes).
*/
void cmd_timeline_rss(void){
  Stmt q;
  int nLine=0;
  char *zPubDate, *zProjectName, *zProjectDescr, *zFreeProjectName=0;
  Blob bSQL;
  const char *zType = find_option("type","y",1); /* Type of events;All if NULL*/
  const char *zTicketUuid = find_option("tkt",NULL,1);
  const char *zTag = find_option("tag",NULL,1);
  const char *zFilename = find_option("name",NULL,1);
  const char *zWiki = find_option("wiki",NULL,1);
  const char *zLimit = find_option("limit", "n",1);
  const char *zBaseURL = find_option("url", NULL, 1);
  int nLimit = atoi( (zLimit && *zLimit) ? zLimit : "20" );
  int nTagId;
  const char zSQL1[] =
    @ SELECT
    @   blob.rid,
    @   uuid,
    @   event.mtime,
    @   coalesce(ecomment,comment),
    @   coalesce(euser,user),
    @   (SELECT count(*) FROM plink WHERE pid=blob.rid AND isprim),
    @   (SELECT count(*) FROM plink WHERE cid=blob.rid),
    @   (SELECT group_concat(substr(tagname,5), ', ') FROM tag, tagxref
    @     WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0) AS tags
    @ FROM event, blob
    @ WHERE blob.rid=event.objid
  ;
  if(!zType || !*zType){
    zType = "all";
  }
  if(!zBaseURL || !*zBaseURL){
    zBaseURL = "URL-PLACEHOLDER";
  }

  db_find_and_open_repository(0, 0);

  /* We should be done with options.. */
    verify_all_options();

  blob_zero(&bSQL);
  blob_append( &bSQL, zSQL1, -1 );

  if( zType[0]!='a' ){
    blob_append_sql(&bSQL, " AND event.type=%Q", zType);
  }

  if( zTicketUuid ){
    nTagId = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",
      zTicketUuid);
    if ( nTagId==0 ){
      nTagId = -1;
    }
  }else if( zTag ){
    nTagId = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'sym-%q*'",
      zTag);
    if ( nTagId==0 ){
      nTagId = -1;
    }
  }else if( zWiki ){
    nTagId = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'wiki-%q*'",
      zWiki);
    if ( nTagId==0 ){
      nTagId = -1;
    }
  }else{
    nTagId = 0;
  }

  if( nTagId==-1 ){
    blob_append_sql(&bSQL, " AND 0");
  }else if( nTagId!=0 ){
    blob_append_sql(&bSQL, " AND (EXISTS(SELECT 1 FROM tagxref"
      " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid))", nTagId);
  }

  if( zFilename ){
    blob_append_sql(&bSQL,
      " AND (SELECT mlink.fnid FROM mlink WHERE event.objid=mlink.mid) "
      " IN (SELECT fnid FROM filename WHERE name=%Q %s)",
        zFilename, filename_collation()
    );
  }

  blob_append( &bSQL, " ORDER BY event.mtime DESC", -1 );

  zProjectName = db_get("project-name", 0);
  if( zProjectName==0 ){
    zFreeProjectName = zProjectName =
      mprintf("Fossil source repository for: %s", zBaseURL);
  }
  zProjectDescr = db_get("project-description", 0);
  if( zProjectDescr==0 ){
    zProjectDescr = zProjectName;
  }

  zPubDate = cgi_rfc822_datestamp(time(NULL));

  fossil_print("<?xml version=\"1.0\"?>");
  fossil_print("<rss xmlns:dc=\"http://purl.org/dc/elements/1.1/\" "
               "  version=\"2.0\">");
  fossil_print("<channel>\n");
  fossil_print("<title>%h</title>\n", zProjectName);
  fossil_print("<link>%s</link>\n", zBaseURL);
  fossil_print("<description>%h</description>\n", zProjectDescr);
  fossil_print("<pubDate>%s</pubDate>\n", zPubDate);
  fossil_print("<generator>Fossil version %s %s</generator>\n",
               MANIFEST_VERSION, MANIFEST_DATE);
  free(zPubDate);
  db_prepare(&q, "%s", blob_sql_text(&bSQL));
  blob_reset( &bSQL );
  while( db_step(&q)==SQLITE_ROW && nLine<nLimit ){
    const char *zId = db_column_text(&q, 1);
    const char *zCom = db_column_text(&q, 3);
    const char *zAuthor = db_column_text(&q, 4);
    char *zPrefix = "";
    char *zSuffix = 0;
    char *zDate;
    int nChild = db_column_int(&q, 5);
    int nParent = db_column_int(&q, 6);
    const char *zTagList = db_column_text(&q, 7);
    time_t ts;

    if( zTagList && zTagList[0]==0 ) zTagList = 0;
    ts = (time_t)((db_column_double(&q,2) - 2440587.5)*86400.0);
    zDate = cgi_rfc822_datestamp(ts);

    if( nParent>1 && nChild>1 ){
      zPrefix = "*MERGE/FORK* ";
    }else if( nParent>1 ){
      zPrefix = "*MERGE* ";
    }else if( nChild>1 ){
      zPrefix = "*FORK* ";
    }

    if( zTagList ){
      zSuffix = mprintf(" (tags: %s)", zTagList);
    }

    @     <item>
    @       <title>%s(zPrefix)%h(zCom)</title>
    @       <link>%s(g.zBaseURL)/ci/%s(zId)</link>
    @       <description>%s(zPrefix)%h(zCom)</description>
    @       <pubDate>%s(zDate)</pubDate>
    @       <author>%h(zAuthor)</author>
    @       <guid>%s(g.zBaseURL)/ci/%s(zId)</guid>
    @     </item>
    fossil_print("<item>");
    fossil_print("<title>%s%h%h</title>\n", zPrefix, zCom, zSuffix);
    fossil_print("<link>%s/info/%s</link>\n", zBaseURL, zId);
    fossil_print("<description>%s%h%h</description>\n", zPrefix, zCom, zSuffix);
    fossil_print("<pubDate>%s</pubDate>\n", zDate);
    fossil_print("<dc:creator>%h</dc:creator>\n", zAuthor);
    fossil_print("<guid>%s/info/%s</guid>\n", g.zBaseURL, zId);
    fossil_print("</item>\n");
    free(zDate);
    free(zSuffix);
    nLine++;
  }

  db_finalize(&q);
  @   </channel>
  @ </rss>
  fossil_print("</channel>\n");
  fossil_print("</rss>\n");

  if( zFreeProjectName != 0 ){
    free( zFreeProjectName );
  }
}
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
** 
**
** This file contains string constants that implement the database schema.
*/
#include "config.h"
#include "schema.h"

/*
** The database schema for the ~/.fossil configuration database.
*/
const char zConfigSchema[] = 
const char zConfigSchema[] =
@ -- This file contains the schema for the database that is kept in the
@ -- ~/.fossil file and that stores information about the users setup.
@ --
@ CREATE TABLE global_config(
@   name TEXT PRIMARY KEY,
@   value TEXT
@ );
@
@ -- Identifier for this file type.
@ -- The integer is the same as 'FSLG'.
@ PRAGMA application_id=252006675;
;

#if INTERFACE
/*
** The content tables have a content version number which rarely
** changes.  The aux tables have an arbitrary version number (typically
** a date) which can change frequently.  When the content schema changes,
** we have to execute special procedures to update the schema.  When
** the aux schema changes, all we need to do is rebuild the database.
*/
#define CONTENT_SCHEMA  "1"
#define AUX_SCHEMA      "2006-12-23"
#define CONTENT_SCHEMA  "2"
#define AUX_SCHEMA_MIN  "2011-04-25 19:50"
#define AUX_SCHEMA_MAX  "2015-01-24"
/* NB:  Some features require the latest schema.  Warning or error messages
** will appear if an older schema is used.  However, the older schemas are
** adequate for many common functions. */

#endif /* INTERFACE */


/*
** The schema for a repository database.  
** The schema for a repository database.
**
** Schema1[] contains parts of the schema that are fixed and unchanging
** across versions.  Schema2[] contains parts of the schema that can
** change from one version to the next.  The information in Schema2[]
** can be reconstructed from the information in Schema1[].
** is reconstructed from the information in Schema1[] by the "rebuild"
** operation.
*/
const char zRepositorySchema1[] = 
const char zRepositorySchema1[] =
@ -- The BLOB and DELTA tables contain all records held in the repository.
@ --
@ -- The BLOB.CONTENT column is always compressed using libz.  This
@ -- The BLOB.CONTENT column is always compressed using zlib.  This
@ -- column might hold the full text of the record or it might hold
@ -- a delta that is able to reconstruct the record from some other
@ -- record.  If BLOB.CONTENT holds a delta, then a DELTA table entry
@ -- will exist for the record and that entry will point to another
@ -- entry that holds the source of the delta.  Deltas can be chained.
@ --
@ -- The blob and delta tables collectively hold the "global state" of
@ -- a Fossil repository.
@ --
@ CREATE TABLE blob(
@   rid INTEGER PRIMARY KEY,        -- Record ID
@   rcvid INTEGER,                  -- Origin of this record
@   size INTEGER,                   -- Size of content. -1 for a phantom.
@   uuid TEXT UNIQUE NOT NULL,      -- SHA1 hash of the content
@   uuid TEXT UNIQUE NOT NULL,      -- hash of the content
@   content BLOB,                   -- Compressed content of this record
@   CHECK( length(uuid)==40 AND rid>0 )
@   CHECK( length(uuid)>=40 AND rid>0 )
@ );
@ CREATE TABLE delta(
@   rid INTEGER PRIMARY KEY,                 -- Record ID
@   srcid INTEGER NOT NULL REFERENCES blob   -- Record holding source document
@   rid INTEGER PRIMARY KEY,                 -- BLOB that is delta-compressed
@   srcid INTEGER NOT NULL REFERENCES blob   -- Baseline for delta-compression
@ );
@ CREATE INDEX delta_i1 ON delta(srcid);
@
@ -------------------------------------------------------------------------
@ -- The BLOB and DELTA tables above hold the "global state" of a Fossil
@ -- project; the stuff that is normally exchanged during "sync".  The
@ -- "local state" of a repository is contained in the remaining tables of
@ -- the zRepositorySchema1 string.
@ -------------------------------------------------------------------------
@
@ -- Whenever new blobs are received into the repository, an entry
@ -- in this table records the source of the blob.
@ --
@ CREATE TABLE rcvfrom(
@   rcvid INTEGER PRIMARY KEY,      -- Received-From ID
@   uid INTEGER REFERENCES user,    -- User login
@   mtime DATETIME,                 -- Time or receipt
@   mtime DATETIME,                 -- Time of receipt.  Julian day.
@   nonce TEXT UNIQUE,              -- Nonce used for login
@   ipaddr TEXT                     -- Remote IP address.  NULL for direct.
@ );
@
@ -- Information about users
@ --
@ -- The user.pw field can be either cleartext of the password, or
@ -- a SHA1 hash of the password.  If the user.pw field is exactly 40
@ -- characters long we assume it is a SHA1 hash.  Otherwise, it is
@ -- cleartext.  The sha1_shared_secret() routine computes the password
@ -- hash based on the project-code, the user login, and the cleartext
@ -- password.
@ --
@ CREATE TABLE user(
@   uid INTEGER PRIMARY KEY,        -- User ID
@   login TEXT,                     -- login name of the user
@   login TEXT UNIQUE,              -- login name of the user
@   pw TEXT,                        -- password
@   cap TEXT,                       -- Capabilities of this user
@   cookie TEXT,                    -- WWW login cookie
@   ipaddr TEXT,                    -- IP address for which cookie is valid
@   cexpire DATETIME,               -- Time when cookie expires
@   info TEXT,                      -- contact information
@   mtime DATE,                     -- last change.  seconds since 1970
@   photo BLOB                      -- JPEG image of this user
@   photo BLOB,                     -- JPEG image of this user
@   jx TEXT DEFAULT '{}'            -- Extra fields in JSON
@ );
@
@ -- The VAR table holds miscellanous information about the repository.
@ -- The config table holds miscellanous information about the repository.
@ -- in the form of name-value pairs.
@ --
@ CREATE TABLE config(
@   name TEXT PRIMARY KEY NOT NULL,  -- Primary name of the entry
@   value CLOB,                      -- Content of the named parameter
@   mtime DATE,                      -- last modified.  seconds since 1970
@   CHECK( typeof(name)='text' AND length(name)>=1 )
@ );
@
@ -- Artifacts that should not be processed are identified in the
@ -- "shun" table.  Artifacts that are control-file forgeries or
@ -- spam or artifacts whose contents violate administrative policy
@ -- can be shunned in order to prevent them from contaminating
@ -- the repository.
@ --
@ -- Shunned artifacts do not exist in the blob table.  Hence they
@ -- have not artifact ID (rid) and we thus must store their full
@ -- UUID.
@ --
@ CREATE TABLE shun(uuid UNIQUE);
@ CREATE TABLE shun(
@   uuid UNIQUE,          -- UUID of artifact to be shunned. Canonical form
@   mtime DATE,           -- When added.  seconds since 1970
@   scom TEXT             -- Optional text explaining why the shun occurred
@ );
@
@ -- Artifacts that should not be pushed are stored in the "private"
@ -- table.  Private artifacts are omitted from the "unclustered" and
@ -- "unsent" tables.
@ --
@ -- A phantom artifact (that is, an artifact with BLOB.SIZE<0 - an artifact
@ -- for which we do not know the content) might also be marked as private.
@ -- This comes about when an artifact is named in a manifest or tag but
@ -- the content of that artifact is held privately by some other peer
@ -- repository.
@ --
@ CREATE TABLE private(rid INTEGER PRIMARY KEY);
@
@ -- An entry in this table describes a database query that generates a
@ -- table of tickets.
@ --
@ CREATE TABLE reportfmt(
@    rn integer primary key,  -- Report number
@    owner text,              -- Owner of this report format (not used)
@    title text,              -- Title of this report
@    cols text,               -- A color-key specification
@    sqlcode text             -- An SQL SELECT statement for this report
@    rn INTEGER PRIMARY KEY,  -- Report number
@    owner TEXT,              -- Owner of this report format (not used)
@    title TEXT UNIQUE,       -- Title of this report
@    mtime DATE,              -- Last modified.  seconds since 1970
@    cols TEXT,               -- A color-key specification
@    sqlcode TEXT,            -- An SQL SELECT statement for this report
@    jx TEXT DEFAULT '{}'     -- Additional fields encoded as JSON
@ );
@
@ -- Some ticket content (such as the originators email address or contact
@ -- information) needs to be obscured to protect privacy.  This is achieved
@ -- by storing an SHA1 hash of the content.  For display, the hash is
@ -- mapped back into the original text using this table.
@ --
@ -- This table contains sensitive information and should not be shared
@ -- with unauthorized users.
@ --
@ CREATE TABLE concealed(
@   hash TEXT PRIMARY KEY,    -- The SHA1 hash of content
@   mtime DATE,               -- Time created.  Seconds since 1970
@   content TEXT              -- Content intended to be concealed
@ );
@
@ -- The application ID helps the unix "file" command to identify the
@ -- database as a fossil repository.
@ PRAGMA application_id=252006673;
;

/*
** The default reportfmt entry for the schema. This is in an extra
** script so that (configure reset) can install the default report.
*/
const char zRepositorySchemaDefaultReports[] =
@ INSERT INTO reportfmt(title,cols,sqlcode) VALUES('All Tickets','#ffffff Key:
@ INSERT INTO reportfmt(title,mtime,cols,sqlcode)
@ VALUES('All Tickets',julianday('1970-01-01'),'#ffffff Key:
@ #f2dcdc Active
@ #e8e8e8 Review
@ #cfe8bd Fixed
@ #bde5d6 Tested
@ #cacae5 Deferred
@ #c8c8c8 Closed','SELECT
@   CASE WHEN status IN (''Open'',''Verified'') THEN ''#f2dcdc''
@        WHEN status=''Review'' THEN ''#e8e8e8''
@        WHEN status=''Fixed'' THEN ''#cfe8bd''
@        WHEN status=''Tested'' THEN ''#bde5d6''
@        WHEN status=''Deferred'' THEN ''#cacae5''
@        ELSE ''#c8c8c8'' END AS ''bgcolor'',
@   substr(tkt_uuid,1,10) AS ''#'',
@   datetime(tkt_mtime) AS ''mtime'',
@   type,
@   status,
@   subsystem,
@   title
@ FROM ticket');
@
@ -- Some ticket content (such as the originators email address or contact
@ -- information) needs to be obscured to protect privacy.  This is achieved
@ -- by storing an SHA1 hash of the content.  For display, the hash is
@ -- mapped back into the original text using this table.  
@ --
@ -- This table contains sensitive information and should not be shared
@ -- with unauthorized users.
@ --
@ CREATE TABLE concealed(
@   hash TEXT PRIMARY KEY,
@   content TEXT
@ );
;

const char zRepositorySchema2[] =
@ -- Filenames
@ --
@ CREATE TABLE filename(
@   fnid INTEGER PRIMARY KEY,    -- Filename ID
@   name TEXT UNIQUE             -- Name of file page
@ );
@
@ -- Linkages between manifests, files created by that manifest, and
@ -- Linkages between check-ins, files created by each check-in, and
@ -- the names of those files.
@ --
@ -- Each entry represents a file that changed content from pid to fid
@ -- due to the check-in that goes from pmid to mid.  fnid is the name
@ -- of the file in the mid check-in.  If the file was renamed as part
@ -- of the mid check-in, then pfnid is the previous filename.
@
@ -- There can be multiple entries for (mid,fid) if the mid check-in was
@ -- a merge.  Entries with isaux==0 are from the primary parent.  Merge
@ -- parents have isaux set to true.
@ --
@ -- Field name mnemonics:
@ --    mid = Manifest ID.  (Each check-in is stored as a "Manifest")
@ --    fid = File ID.
@ --    pmid = Parent Manifest ID.
@ --    pid = Parent file ID.
@ --    fnid = File Name ID.
@ --    pfnid = Parent File Name ID.
@ --    isaux = pmid IS AUXiliary parent, not primary parent
@ --
@ -- pid==0 if the file is added by check-in mid.
@ -- fid==0 if the file is removed by check-in mid.
@ -- pid==0    if the file is added by check-in mid.
@ -- pid==(-1) if the file exists in a merge parents but not in the primary
@  --          parent.  In other words, if the file file was added by merge.
@ -- fid==0    if the file is removed by check-in mid.
@ --
@ CREATE TABLE mlink(
@   mid INTEGER REFERENCES blob,        -- Manifest ID where change occurs
@   pid INTEGER REFERENCES blob,        -- File ID in parent manifest
@   fid INTEGER REFERENCES blob,        -- Changed file ID in this manifest
@   fnid INTEGER REFERENCES filename,   -- Name of the file
@   pfnid INTEGER REFERENCES filename   -- Previous name. 0 if unchanged
@   mid INTEGER,                       -- Check-in that contains fid
@   fid INTEGER,                       -- New file content. 0 if deleted
@   pmid INTEGER,                      -- Check-in that contains pid
@   pid INTEGER,                       -- Prev file content. 0 if new. -1 merge
@   fnid INTEGER REFERENCES filename,  -- Name of the file
@   pfnid INTEGER,                     -- Previous name. 0 if unchanged
@   mperm INTEGER,                     -- File permissions.  1==exec
@   isaux BOOLEAN DEFAULT 0            -- TRUE if pmid is the primary
@ );
@ CREATE INDEX mlink_i1 ON mlink(mid);
@ CREATE INDEX mlink_i2 ON mlink(fnid);
@ CREATE INDEX mlink_i3 ON mlink(fid);
@ CREATE INDEX mlink_i4 ON mlink(pid);
@
@ -- Parent/child linkages
@ -- Parent/child linkages between check-ins
@ --
@ CREATE TABLE plink(
@   pid INTEGER REFERENCES blob,    -- Parent manifest
@   cid INTEGER REFERENCES blob,    -- Child manifest
@   isprim BOOLEAN,                 -- pid is the primary parent of cid
@   mtime DATETIME,                 -- the date/time stamp on cid
@   mtime DATETIME,                 -- the date/time stamp on cid.  Julian day.
@   baseid INTEGER REFERENCES blob, -- Baseline if cid is a delta manifest.
@   UNIQUE(pid, cid)
@ );
@ CREATE INDEX plink_i2 ON plink(cid);
@ CREATE INDEX plink_i2 ON plink(cid,pid);
@
@ -- A "leaf" check-in is a check-in that has no children in the same
@ -- branch.  The set of all leaves is easily computed with a join,
@ -- between the plink and tagxref tables, but it is a slower join for
@ -- very large repositories (repositories with 100,000 or more check-ins)
@ -- and so it makes sense to precompute the set of leaves.  There is
@ -- one entry in the following table for each leaf.
@ --
@ CREATE TABLE leaf(rid INTEGER PRIMARY KEY);
@
@ -- Events used to generate a timeline
@ -- Events used to generate a timeline.  Type meanings:
@ --     ci    Check-ins
@ --     e     Technotes
@ --     f     Forum posts
@ --     g     Tags
@ --     t     Ticket changes
@ --     w     Wiki page edit
@ --
@ CREATE TABLE event(
@   type TEXT,                      -- Type of event
@   mtime DATETIME,                 -- Date and time when the event occurs
@   type TEXT,                      -- Type of event: ci, e, f, g, t, w
@   mtime DATETIME,                 -- Time of occurrence. Julian day.
@   objid INTEGER PRIMARY KEY,      -- Associated record ID
@   tagid INTEGER,                  -- Associated ticket or wiki name tag
@   uid INTEGER REFERENCES user,    -- User who caused the event
@   bgcolor TEXT,                   -- Color set by 'bgcolor' property
@   euser TEXT,                     -- User set by 'user' property
@   user TEXT,                      -- Name of the user
@   ecomment TEXT,                  -- Comment set by 'comment' property
@   comment TEXT,                   -- Comment describing the event
@   brief TEXT                      -- Short comment when tagid already seen
@   brief TEXT,                     -- Short comment when tagid already seen
@   omtime DATETIME                 -- Original unchanged date+time, or NULL
@ );
@ CREATE INDEX event_i1 ON event(mtime);
@
@ -- A record of phantoms.  A phantom is a record for which we know the
@ -- UUID but we do not (yet) know the file content.
@ -- file hash but we do not (yet) know the file content.
@ --
@ CREATE TABLE phantom(
@   rid INTEGER PRIMARY KEY         -- Record ID of the phantom
@ );
@
@ -- A record of orphaned delta-manifests.  An orphan is a delta-manifest
@ -- for which we have content, but its baseline-manifest is a phantom.
@ -- We have to track all orphan manifests so that when the baseline arrives,
@ -- we know to process the orphaned deltas.
@ CREATE TABLE orphan(
@   rid INTEGER PRIMARY KEY,        -- Delta manifest with a phantom baseline
@   baseline INTEGER                -- Phantom baseline of this orphan
@ );
@ CREATE INDEX orphan_baseline ON orphan(baseline);
@
@ -- Unclustered records.  An unclustered record is a record (including
@ -- a cluster records themselves) that is not mentioned by some other
@ -- cluster.
@ --
@ -- Phantoms are usually included in the unclustered table.  A new cluster
@ -- will never be created that contains a phantom.  But another repository
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@ -- used to reduce push operations to a single HTTP request in the
@ -- common case when one repository only talks to a single server.
@ --
@ CREATE TABLE unsent(
@   rid INTEGER PRIMARY KEY         -- Record ID of the phantom
@ );
@
@ -- Each baseline or manifest can have one or more tags.  A tag
@ -- Each artifact can have one or more tags.  A tag
@ -- is defined by a row in the next table.
@ -- 
@ --
@ -- Wiki pages are tagged with "wiki-NAME" where NAME is the name of
@ -- the wiki page.  Tickets changes are tagged with "ticket-UUID" where 
@ -- UUID is the indentifier of the ticket.  Tags used to assign symbolic
@ -- the wiki page.  Tickets changes are tagged with "ticket-HASH" where
@ -- HASH is the indentifier of the ticket.  Tags used to assign symbolic
@ -- names to baselines are branches are of the form "sym-NAME" where
@ -- NAME is the symbolic name.
@ --
@ CREATE TABLE tag(
@   tagid INTEGER PRIMARY KEY,       -- Numeric tag ID
@   tagname TEXT UNIQUE              -- Tag name.
@ );
@ INSERT INTO tag VALUES(1, 'bgcolor');         -- TAG_BGCOLOR
@ INSERT INTO tag VALUES(2, 'comment');         -- TAG_COMMENT
@ INSERT INTO tag VALUES(3, 'user');            -- TAG_USER
@ INSERT INTO tag VALUES(4, 'date');            -- TAG_DATE
@ INSERT INTO tag VALUES(5, 'hidden');          -- TAG_HIDDEN
@ INSERT INTO tag VALUES(6, 'private');         -- TAG_PRIVATE
@ INSERT INTO tag VALUES(7, 'cluster');         -- TAG_CLUSTER
@ INSERT INTO tag VALUES(8, 'branch');          -- TAG_BRANCH
@ INSERT INTO tag VALUES(9, 'closed');          -- TAG_CLOSED
@ INSERT INTO tag VALUES(10,'parent');          -- TAG_PARENT
@ INSERT INTO tag VALUES(11,'note');            -- TAG_NOTE
@
@ -- Assignments of tags to baselines.  Note that we allow tags to
@ -- Assignments of tags to artifacts.  Note that we allow tags to
@ -- have values assigned to them.  So we are not really dealing with
@ -- tags here.  These are really properties.  But we are going to
@ -- keep calling them tags because in many cases the value is ignored.
@ --
@ CREATE TABLE tagxref(
@   tagid INTEGER REFERENCES tag,   -- The tag that added or removed
@   tagtype INTEGER,                -- 0:cancel  1:single  2:branch
@   srcid INTEGER REFERENCES blob,  -- Artifact of tag. 0 for propagated tags
@   origid INTEGER REFERENCES blob, -- check-in holding propagated tag
@   tagid INTEGER REFERENCES tag,   -- The tag being added, removed,
@                                   -- or propagated
@   tagtype INTEGER,                -- 0:-,cancel  1:+,single  2:*,propagate
@   srcid INTEGER REFERENCES blob,  -- Artifact tag originates from, or
@                                   -- 0 for propagated tags
@   origid INTEGER REFERENCES blob, -- Artifact holding propagated tag
@                                   -- (any artifact type with a P-card)
@   value TEXT,                     -- Value of the tag.  Might be NULL.
@   mtime TIMESTAMP,                -- Time of addition or removal
@   mtime TIMESTAMP,                -- Time of addition or removal. Julian day
@   rid INTEGER REFERENCE blob,     -- Artifact tag is applied to
@   UNIQUE(rid, tagid)
@ );
@ CREATE INDEX tagxref_i1 ON tagxref(tagid, mtime);
@
@ -- When a hyperlink occurs from one artifact to another (for example
@ -- when a check-in comment refers to a ticket) an entry is made in
@ -- the following table for that hyperlink.  This table is used to
@ -- facilitate the display of "back links".
@ --
@ CREATE TABLE backlink(
@   target TEXT,           -- Where the hyperlink points to
@   srctype INT,           -- 0: check-in  1: ticket  2: wiki
@   srcid INT,             -- rid for checkin or wiki.  tkt_id for ticket.
@   mtime TIMESTAMP,       -- time that the hyperlink was added
@   srctype INT,           -- 0=comment 1=ticket 2=wiki. See BKLNK_* below.
@   srcid INT,             -- EVENT.OBJID for the source document
@   mtime TIMESTAMP,       -- time that the hyperlink was added. Julian day.
@   UNIQUE(target, srctype, srcid)
@ );
@ CREATE INDEX backlink_src ON backlink(srcid, srctype);
@
@ -- Each attachment is an entry in the following table.  Only
@ -- the most recent attachment (identified by the D card) is saved.
@ --
@ CREATE TABLE attachment(
@   attachid INTEGER PRIMARY KEY,   -- Local id for this attachment
@   isLatest BOOLEAN DEFAULT 0,     -- True if this is the one to use
@   mtime TIMESTAMP,                -- Time when attachment last changed
@   src TEXT,                       -- UUID of the attachment.  NULL to delete
@   target TEXT,                    -- Object attached to. Wikiname or Tkt UUID
@   mtime TIMESTAMP,                -- Last changed.  Julian day.
@   src TEXT,                       -- Hash of the attachment.  NULL to delete
@   target TEXT,                    -- Object attached to. Wikiname or Tkt hash
@   filename TEXT,                  -- Filename for the attachment
@   comment TEXT,                   -- Comment associated with this attachment
@   user TEXT                       -- Name of user adding attachment
@ );
@ CREATE INDEX attachment_idx1 ON attachment(target, filename, mtime);
@ CREATE INDEX attachment_idx2 ON attachment(src);
@
@ -- Template for the TICKET table
@ --
@ -- NB: when changing the schema of the TICKET table here, also make the
@ -- same change in tktsetup.c.
@ --
@ CREATE TABLE ticket(
@   -- Do not change any column that begins with tkt_
@   tkt_id INTEGER PRIMARY KEY,
@   tkt_uuid TEXT UNIQUE,
@   tkt_mtime DATE,
@   tkt_ctime DATE,
@   -- Add as many field as required below this line
@   type TEXT,
@   status TEXT,
@   subsystem TEXT,
@   priority TEXT,
@   severity TEXT,
@   foundin TEXT,
@   private_contact TEXT,
@   resolution TEXT,
@   title TEXT,
@   comment TEXT
@ );
@ CREATE TABLE ticketchng(
@   -- Do not change any column that begins with tkt_
@   tkt_id INTEGER REFERENCES ticket,
@   tkt_rid INTEGER REFERENCES blob,
@   tkt_mtime DATE,
@   tkt_user TEXT,
@   -- Add as many fields as required below this line
@   login TEXT,
@   username TEXT,
@   mimetype TEXT,
@   icomment TEXT
@ );
@ CREATE INDEX ticketchng_idx1 ON ticketchng(tkt_id, tkt_mtime);
@
@ -- For tracking cherrypick merges
@ CREATE TABLE cherrypick(
@   parentid INT,
@   childid INT,
@   isExclude BOOLEAN DEFAULT false,
@   PRIMARY KEY(parentid, childid)
@ ) WITHOUT ROWID;
@ CREATE INDEX cherrypick_cid ON cherrypick(childid);
;

/*
** Allowed values for backlink.srctype
*/
#if INTERFACE
# define BKLNK_COMMENT    0   /* Check-in comment */
# define BKLNK_TICKET     1   /* Ticket body or title */
# define BKLNK_WIKI       2   /* Wiki */
# define BKLNK_EVENT      3   /* Technote */
# define BKLNK_FORUM      4   /* Forum post */
# define ValidBklnk(X)   (X>=0 && X<=4)  /* True if backlink.srctype is valid */
#endif

/*
** Allowed values for MIMEtype codes
*/
#if INTERFACE
# define MT_NONE       0   /* unspecified */
# define MT_WIKI       1   /* Wiki */
# define MT_MARKDOWN   2   /* Markdonw */
# define MT_UNKNOWN    3   /* unknown  */
# define ValidMTC(X)  ((X)>=0 && (X)<=3)  /* True if MIMEtype code is valid */
#endif

/*
** Predefined tagid values
*/
#if INTERFACE
# define TAG_BGCOLOR    1     /* Set the background color for display */
# define TAG_COMMENT    2     /* The check-in comment */
# define TAG_USER       3     /* User who made a checking */
# define TAG_DATE       4     /* The date of a check-in */
# define TAG_HIDDEN     5     /* Do not display or sync */
# define TAG_PRIVATE    6     /* Display but do not sync */
# define TAG_HIDDEN     5     /* Do not display in timeline */
# define TAG_PRIVATE    6     /* Do not sync */
# define TAG_CLUSTER    7     /* A cluster */
# define TAG_BRANCH     8     /* Value is name of the current branch */
# define TAG_CLOSED     9     /* Do not display this check-in as a leaf */
#endif
# define TAG_PARENT     10    /* Change to parentage on a check-in */
#if EXPORT_INTERFACE
# define MAX_INT_TAG    9     /* The largest pre-assigned tag id */
# define TAG_NOTE       11    /* Extra text appended to a check-in comment */
#endif

/*
** The schema for the locate FOSSIL database file found at the root
** of very check-out.  This database contains the complete state of
** the checkout.
** The schema for the local FOSSIL database file found at the root
** of every check-out.  This database contains the complete state of
** the check-out.  See also the addendum in zLocalSchemaVmerge[].
*/
const char zLocalSchema[] =
@ -- The VVAR table holds miscellanous information about the local database
@ -- in the form of name-value pairs.  This is similar to the VAR table
@ -- table in the repository except that this table holds information that
@ -- is specific to the local checkout.
@ -- is specific to the local check-out.
@ --
@ -- Important Variables:
@ --
@ --     repository        Full pathname of the repository database
@ --     user-id           Userid to use
@ --
@ CREATE TABLE vvar(
@   name TEXT PRIMARY KEY NOT NULL,  -- Primary name of the entry
@   value CLOB,                      -- Content of the named parameter
@   CHECK( typeof(name)='text' AND length(name)>=1 )
@ );
@
@ -- Each entry in the vfile table represents a single file in the
@ -- current checkout.
@ -- current check-out.
@ --
@ -- The file.rid field is 0 for files or folders that have been
@ -- added but not yet committed.
@ --
@ -- Vfile.chnged is 0 for unmodified files, 1 for files that have
@ -- been edited or which have been subjected to a 3-way merge.  
@ -- Vfile.chnged is 2 if the file has been replaced from a different
@ -- version by the merge and 3 if the file has been added by a merge.
@ -- Vfile.chnged meaning:
@ --    0       File is unmodified
@ --    1       Manually edited and/or modified as part of a merge command
@ --    2       Replaced by a merge command
@ -- The difference between vfile.chnged==2 and a regular add is that
@ -- with vfile.chnged==2 we know that the current version of the file
@ -- is already in the repository.
@ -- 
@ --    3       Added by a merge command
@ --    4,5     Same as 2,3 except merge using --integrate
@ --
@ CREATE TABLE vfile(
@   id INTEGER PRIMARY KEY,           -- ID of the checked out file
@   vid INTEGER REFERENCES blob,      -- The baseline this file is part of.
@   chnged INT DEFAULT 0,             -- 0:unchnged 1:edited 2:m-chng 3:m-add
@   deleted BOOLEAN DEFAULT 0,        -- True if deleted 
@   id INTEGER PRIMARY KEY,           -- ID of the checked-out file
@   vid INTEGER REFERENCES blob,      -- The check-in this file is part of.
@   chnged INT DEFAULT 0,  -- 0:unchng 1:edit 2:m-chng 3:m-add 4:i-chng 5:i-add
@   deleted BOOLEAN DEFAULT 0,        -- True if deleted
@   isexe BOOLEAN,                    -- True if file should be executable
@   islink BOOLEAN,                   -- True if file should be symlink
@   rid INTEGER,                      -- Originally from this repository record
@   mrid INTEGER,                     -- Based on this record due to a merge
@   mtime INTEGER,                    -- Modification time of file on disk
@   mtime INTEGER,                    -- Mtime of file on disk. sec since 1970
@   pathname TEXT,                    -- Full pathname relative to root
@   origname TEXT,                    -- Original pathname. NULL if unchanged
@   mhash TEXT,                       -- Hash of mrid iff mrid!=rid
@   UNIQUE(pathname,vid)
@ );
@
@ -- Identifier for this file type.
@ -- The integer is the same as 'FSLC'.
@ PRAGMA application_id=252006674;
;

/* Additional local database initialization following the schema
** enhancement of 2019-01-19, in which the mhash column was added
** to vmerge and vfile.
*/
const char zLocalSchemaVmerge[] =
@ -- This table holds a record of uncommitted merges in the local
@ -- file tree.  If a VFILE entry with id has merged with another
@ -- record, there is an entry in this table with (id,merge) where
@ -- merge is the RECORD table entry that the file merged against.
@ -- An id of 0 here means the version record itself.
@ -- An id of 0 or <-3 here means the version record itself.  When
@ -- id==(-1) that is a cherrypick merge, id==(-2) that is a
@ -- backout merge and id==(-4) is an integrate merge.
@ --
@
@ CREATE TABLE vmerge(
@   id INTEGER REFERENCES vfile,      -- VFILE entry that has been merged
@   merge INTEGER,                    -- Merged with this record
@   UNIQUE(id, merge)
@   mhash TEXT                        -- SHA1/SHA3 hash for merge object
@ );
@ CREATE UNIQUE INDEX vmergex1 ON vmerge(id,mhash);
@   
@
@ -- The following trigger will prevent older versions of Fossil that
@ -- do not know about the new vmerge.mhash column from updating the
@ -- vmerge table.  This must be done with a trigger, since legacy Fossil
@ -- uses INSERT OR IGNORE to update vmerge, and the OR IGNORE will cause
@ -- a NOT NULL constraint to be silently ignored.
@
@ CREATE TRIGGER vmerge_ck1 AFTER INSERT ON vmerge
@ WHEN new.mhash IS NULL BEGIN
@   SELECT raise(FAIL,
@   'trying to update a newer check-out with an older version of Fossil');
@ END;
@
;

/*
** The following table holds information about forum posts.  It
** is created on-demand whenever the manifest parser encounters
** a forum-post artifact.
*/
static const char zForumSchema[] =
@ CREATE TABLE repository.forumpost(
@   fpid INTEGER PRIMARY KEY,  -- BLOB.rid for the artifact
@   froot INT,                 -- fpid of the thread root
@   fprev INT,                 -- Previous version of this same post
@   firt INT,                  -- This post is in-reply-to
@   fmtime REAL                -- When posted.  Julian day
@ );
@ CREATE INDEX repository.forumthread ON forumpost(froot,fmtime);
;

/* Create the forum-post schema if it does not already exist */
void schema_forum(void){
  if( !db_table_exists("repository","forumpost") ){
    db_multi_exec("%s",zForumSchema/*safe-for-%s*/);
  }
}
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/* Cause the page to scroll so that the #scrollToMe is visible */
(document.getElementById('scrollToMe')||document.body).scrollIntoView(true);
Changes to src/search.c.
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**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the "/doc" web page and related
** pages.
** This file contains code to implement a search functions
** against timeline comments, check-in content, wiki pages, tickets,
** and/or forum posts.
**
** The search can be either a per-query "grep"-like search that scans
** the entire corpus.  Or it can use the FTS4 search engine of SQLite.
** The choice is an administrator configuration option.
**
** The first option is referred to as "full-scan search".  The second
** option is called "indexed search".
**
** The code in this file is ordered approximately as follows:
**
**    (1) The full-scan search engine
**    (2) The indexed search engine
**    (3) Higher level interfaces that use either (1) or (b2) according
**        to the current search configuration settings
*/
#include "config.h"
#include "search.h"
#include <assert.h>

#if INTERFACE

/* Maximum number of search terms for full-scan search */
#define SEARCH_MAX_TERM   8

/*
** A compiled search patter
** A compiled search pattern used for full-scan search.
*/
struct Search {
  int nTerm;
  struct srchTerm {
    char *z;
    int n;
  } a[8];
  int nTerm;            /* Number of search terms */
  struct srchTerm {     /* For each search term */
    char *z;               /* Text */
    int n;                 /* length */
  } a[SEARCH_MAX_TERM];
  /* Snippet controls */
  char *zPattern;       /* The search pattern */
  char *zMarkBegin;     /* Start of a match */
  char *zMarkEnd;       /* End of a match */
  char *zMarkGap;       /* A gap between two matches */
  unsigned fSrchFlg;    /* Flags */
  int iScore;           /* Score of the last match attempt */
  Blob snip;            /* Snippet for the most recent match */
};

#define SRCHFLG_HTML    0x01   /* Escape snippet text for HTML */
#define SRCHFLG_STATIC  0x04   /* The static gSearch object */

#endif

/*
** Compile a search pattern
*/
Search *search_init(const char *zPattern){
  int nPattern = strlen(zPattern);
  Search *p;
  char *z;
  int i;

** There is a single global Search object:
  p = malloc( nPattern + sizeof(*p) + 1);
  if( p==0 ) fossil_panic("out of memory");
  z = (char*)&p[1];
  strcpy(z, zPattern);
  memset(p, 0, sizeof(*p));
  while( *z && p->nTerm<sizeof(p->a)/sizeof(p->a[0]) ){
    while( !isalnum(*z) && *z ){ z++; }
    if( *z==0 ) break;
    p->a[p->nTerm].z = z;
    for(i=1; isalnum(z[i]) || z[i]=='_'; i++){}
    p->a[p->nTerm].n = i;
    z += i;
    p->nTerm++;
  }
  return p;
}


/*
** Destroy a search context.
*/
void search_end(Search *p){
static Search gSearch;
  free(p);
}


/*
** Theses characters constitute a word boundary
*/
static const char isBoundary[] = {
  1, 1, 1, 1, 1, 1, 1, 1,     1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1,     1, 1, 1, 1, 1, 1, 1, 1,
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  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0,     0, 0, 0, 0, 0, 0, 0, 0,
};
#define ISALNUM(x)  (!isBoundary[(x)&0xff])


/*
** Destroy a full-scan search context.
*/
void search_end(Search *p){
  if( p ){
    fossil_free(p->zPattern);
    fossil_free(p->zMarkBegin);
    fossil_free(p->zMarkEnd);
    fossil_free(p->zMarkGap);
    if( p->iScore ) blob_reset(&p->snip);
    memset(p, 0, sizeof(*p));
    if( p!=&gSearch ) fossil_free(p);
  }
}

/*
** Compile a full-scan search pattern
*/
static Search *search_init(
  const char *zPattern,       /* The search pattern */
  const char *zMarkBegin,     /* Start of a match */
  const char *zMarkEnd,       /* End of a match */
  const char *zMarkGap,       /* A gap between two matches */
  unsigned fSrchFlg           /* Flags */
){
  Search *p;
  char *z;
  int i;

  if( fSrchFlg & SRCHFLG_STATIC ){
    p = &gSearch;
    search_end(p);
  }else{
    p = fossil_malloc(sizeof(*p));
    memset(p, 0, sizeof(*p));
  }
  p->zPattern = z = mprintf("%s", zPattern);
  p->zMarkBegin = mprintf("%s", zMarkBegin);
  p->zMarkEnd = mprintf("%s", zMarkEnd);
  p->zMarkGap = mprintf("%s", zMarkGap);
  p->fSrchFlg = fSrchFlg;
  blob_init(&p->snip, 0, 0);
  while( *z && p->nTerm<SEARCH_MAX_TERM ){
    while( *z && !ISALNUM(*z) ){ z++; }
    if( *z==0 ) break;
    p->a[p->nTerm].z = z;
    for(i=1; ISALNUM(z[i]); i++){}
    p->a[p->nTerm].n = i;
    z += i;
    p->nTerm++;
  }
  return p;
}


/*
** Append n bytes of text to snippet zTxt.  Encode the text appropriately.
*/
static void snippet_text_append(
  Search *p,             /* The search context */
  Blob *pSnip,           /* Append to this snippet */
  const char *zTxt,      /* Text to append */
  int n                  /* How many bytes to append */
){
  if( n>0 ){
    if( p->fSrchFlg & SRCHFLG_HTML ){
      blob_appendf(pSnip, "%#h", n, zTxt);
    }else{
      blob_append(pSnip, zTxt, n);
    }
  }
}

/* This the core search engine for full-scan search.
**
** Compare a search pattern against an input string and return a score.
** Compare a search pattern against one or more input strings which
** collectively comprise a document.  Return a match score.  Any
** postive value means there was a match.  Zero means that one or
** more terms are missing.
**
** The score and a snippet are record for future use.
**
** Scoring:
**   *  All terms must match at least once or the score is zero
**   *  10 bonus points if the first occurrance is an exact match
**   *  1 additional point for each subsequent match of the same word
**   *  Extra points of two consecutive words of the pattern are consecutive
**   *  One point for each matching term
**   *  Extra points if consecutive words of the pattern are consecutive
**      in the document
*/
static int search_match(
  Search *p,              /* Search pattern and flags */
  int nDoc,               /* Number of strings in this document */
  const char **azDoc      /* Text of each string */
){
  int score;                         /* Final score */
  int i;                             /* Offset into current document */
  int ii;                            /* Loop counter */
  int j;                             /* Loop over search terms */
  int k;                             /* Loop over prior terms */
  int iWord = 0;                     /* Current word number */
  int iDoc;                          /* Current document number */
  int wantGap = 0;                   /* True if a zMarkGap is wanted */
  const char *zDoc;                  /* Current document text */
  const int CTX = 50;                /* Amount of snippet context */
  int anMatch[SEARCH_MAX_TERM];      /* Number of terms in best match */
  int aiBestDoc[SEARCH_MAX_TERM];    /* Document containing best match */
  int aiBestOfst[SEARCH_MAX_TERM];   /* Byte offset to start of best match */
  int aiLastDoc[SEARCH_MAX_TERM];    /* Document containing most recent match */
  int aiLastOfst[SEARCH_MAX_TERM];   /* Byte offset to the most recent match */
  int aiWordIdx[SEARCH_MAX_TERM];    /* Word index of most recent match */
int search_score(Search *p, const char *zDoc){
  int iPrev = 999;
  int score = 10;
  int iBonus = 0;
  int i, j;
  unsigned char seen[8];


  memset(anMatch, 0, sizeof(anMatch));
  memset(aiWordIdx, 0xff, sizeof(aiWordIdx));
  for(iDoc=0; iDoc<nDoc; iDoc++){
    zDoc = azDoc[iDoc];
    if( zDoc==0 ) continue;
    iWord++;
    for(i=0; zDoc[i]; i++){
      if( !ISALNUM(zDoc[i]) ) continue;
      iWord++;
      for(j=0; j<p->nTerm; j++){
        int n = p->a[j].n;
        if( sqlite3_strnicmp(p->a[j].z, &zDoc[i], n)==0
         && (!ISALNUM(zDoc[i+n]) || p->a[j].z[n]=='*')
        ){
          aiWordIdx[j] = iWord;
          aiLastDoc[j] = iDoc;
          aiLastOfst[j] = i;
          for(k=1; j-k>=0 && anMatch[j-k] && aiWordIdx[j-k]==iWord-k; k++){}
          for(ii=0; ii<k; ii++){
            if( anMatch[j-ii]<k ){
              anMatch[j-ii] = k*(nDoc-iDoc);
              aiBestDoc[j-ii] = aiLastDoc[j-ii];
              aiBestOfst[j-ii] = aiLastOfst[j-ii];
            }
          }
          break;
        }
      }
      while( ISALNUM(zDoc[i]) ){ i++; }
      if( zDoc[i]==0 ) break;
    }
  }

  /* Finished search all documents.
  ** Every term must be seen or else the score is zero
  */
  score = 1;
  for(j=0; j<p->nTerm; j++) score *= anMatch[j];
  blob_reset(&p->snip);
  p->iScore = score;
  if( score==0 ) return score;


  /* Prepare a snippet that describes the matching text.
  */
  while(1){
    int iOfst;
    int iTail;
    int iBest;
    for(ii=0; ii<p->nTerm && anMatch[ii]==0; ii++){}
    if( ii>=p->nTerm ) break;  /* This is where the loop exits */
    iBest = ii;
  memset(seen, 0, sizeof(seen));
  for(i=0; zDoc[i]; i++){
    char c = zDoc[i];
    iDoc = aiBestDoc[ii];
    iOfst = aiBestOfst[ii];
    if( isBoundary[c&0xff] ) continue;
    for(j=0; j<p->nTerm; j++){
    for(; ii<p->nTerm; ii++){
      int n = p->a[j].n;
      if( sqlite3_strnicmp(p->a[j].z, &zDoc[i], n)==0 ){
      if( anMatch[ii]==0 ) continue;
        score += 1;
        if( !seen[j] ){
          if( isBoundary[zDoc[i+n]&0xff] ) score += 10;
          seen[j] = 1;
        }
        if( j==iPrev+1 ){
      if( aiBestDoc[ii]>iDoc ) continue;
      if( aiBestOfst[ii]>iOfst ) continue;
      iDoc = aiBestDoc[ii];
      iOfst = aiBestOfst[ii];
      iBest = ii;
    }
    iTail = iOfst + p->a[iBest].n;
    anMatch[iBest] = 0;
    for(ii=0; ii<p->nTerm; ii++){
      if( anMatch[ii]==0 ) continue;
          score += iBonus;
      if( aiBestDoc[ii]!=iDoc ) continue;
      if( aiBestOfst[ii]<=iTail+CTX*2 ){
        if( iTail<aiBestOfst[ii]+p->a[ii].n ){
          iTail = aiBestOfst[ii]+p->a[ii].n;
        }
        i += n-1;
        iPrev = j;
        iBonus = 50;
        anMatch[ii] = 0;
        ii = -1;
        continue;
        break;
      }
    }
    zDoc = azDoc[iDoc];
    iBonus /= 2;
    while( !isBoundary[zDoc[i]&0xff] ){ i++; }
    iOfst -= CTX;
    if( iOfst<0 ) iOfst = 0;
    while( iOfst>0 && ISALNUM(zDoc[iOfst-1]) ) iOfst--;
    while( zDoc[iOfst] && !ISALNUM(zDoc[iOfst]) ) iOfst++;
    for(ii=0; ii<CTX && zDoc[iTail]; ii++, iTail++){}
    while( ISALNUM(zDoc[iTail]) ) iTail++;
  }
    if( iOfst>0 || wantGap ) blob_append(&p->snip, p->zMarkGap, -1);
    wantGap = zDoc[iTail]!=0;
    zDoc += iOfst;
    iTail -= iOfst;

  /* Every term must be seen or else the score is zero */
  for(j=0; j<p->nTerm; j++){
    if( !seen[j] ) return 0;
  }
      
    /* Add a snippet segment using characters iOfst..iOfst+iTail from zDoc */
    for(i=0; i<iTail; i++){
      if( !ISALNUM(zDoc[i]) ) continue;
      for(j=0; j<p->nTerm; j++){
        int n = p->a[j].n;
        if( sqlite3_strnicmp(p->a[j].z, &zDoc[i], n)==0
         && (!ISALNUM(zDoc[i+n]) || p->a[j].z[n]=='*')
        ){
          snippet_text_append(p, &p->snip, zDoc, i);
          zDoc += i;
          iTail -= i;
          blob_append(&p->snip, p->zMarkBegin, -1);
          if( p->a[j].z[n]=='*' ){
            while( ISALNUM(zDoc[n]) ) n++;
          }
          snippet_text_append(p, &p->snip, zDoc, n);
          zDoc += n;
          iTail -= n;
          blob_append(&p->snip, p->zMarkEnd, -1);
          i = -1;
          break;
        } /* end-if */
      } /* end for(j) */
      if( j<p->nTerm ){
        while( ISALNUM(zDoc[i]) && i<iTail ){ i++; }
      }
    } /* end for(i) */
    snippet_text_append(p, &p->snip, zDoc, iTail);
  }
  if( wantGap ) blob_append(&p->snip, p->zMarkGap, -1);
  return score;
}

/*
** COMMAND: test-match
**
** Usage: %fossil test-match SEARCHSTRING FILE1 FILE2 ...
**
** Run the full-scan search algorithm using SEARCHSTRING against
** the text of the files listed.  Output matches and snippets.
**
** Options:
**    --begin TEXT        Text to insert before each match
**    --end TEXT          Text to insert after each match
**    --gap TEXT          Text to indicate elided content
**    --html              Input is HTML
**    --static            Use the static Search object
*/
void test_match_cmd(void){
  Search *p;
  int i;
  Blob x;
  int score;
  char *zDoc;
  int flg = 0;
  char *zBegin = (char*)find_option("begin",0,1);
  char *zEnd = (char*)find_option("end",0,1);
  char *zGap = (char*)find_option("gap",0,1);
  if( find_option("html",0,0)!=0 ) flg |= SRCHFLG_HTML;
  if( find_option("static",0,0)!=0 ) flg |= SRCHFLG_STATIC;
  verify_all_options();
  if( g.argc<4 ) usage("SEARCHSTRING FILE1...");
  if( zBegin==0 ) zBegin = "[[";
  if( zEnd==0 ) zEnd = "]]";
  if( zGap==0 ) zGap = " ... ";
  p = search_init(g.argv[2], zBegin, zEnd, zGap, flg);
  for(i=3; i<g.argc; i++){
    blob_read_from_file(&x, g.argv[i], ExtFILE);
    zDoc = blob_str(&x);
    score = search_match(p, 1, (const char**)&zDoc);
    fossil_print("%s: %d\n", g.argv[i], p->iScore);
    blob_reset(&x);
    if( score ){
      fossil_print("%.78c\n%s\n%.78c\n\n", '=', blob_str(&p->snip), '=');
    }
  }
  search_end(p);
}
** This is an SQLite function that scores its input using
** a pre-computed pattern.

/*
** An SQL function to initialize the full-scan search pattern:
**
**     search_init(PATTERN,BEGIN,END,GAP,FLAGS)
**
** All arguments are optional.  PATTERN is the search pattern.  If it
** is omitted, then the global search pattern is reset.  BEGIN and END
** and GAP are the strings used to construct snippets.  FLAGS is an
** integer bit pattern containing the various SRCH_CKIN, SRCH_DOC,
** SRCH_TKT, SRCH_FORUM, or SRCH_ALL bits to determine what is to be
** searched.
*/
static void search_init_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zPattern = 0;
  const char *zBegin = "<mark>";
  const char *zEnd = "</mark>";
  const char *zGap = " ... ";
  unsigned int flg = SRCHFLG_HTML;
  switch( argc ){
    default:
      flg = (unsigned int)sqlite3_value_int(argv[4]);
    case 4:
      zGap = (const char*)sqlite3_value_text(argv[3]);
    case 3:
      zEnd = (const char*)sqlite3_value_text(argv[2]);
    case 2:
      zBegin = (const char*)sqlite3_value_text(argv[1]);
    case 1:
      zPattern = (const char*)sqlite3_value_text(argv[0]);
  }
  if( zPattern && zPattern[0] ){
    search_init(zPattern, zBegin, zEnd, zGap, flg | SRCHFLG_STATIC);
  }else{
    search_end(&gSearch);
  }
}

/*     search_match(TEXT, TEXT, ....)
**
** Using the full-scan search engine created by the most recent call
** to search_init(), match the input the TEXT arguments.
** Remember the results in the global full-scan search object.
** Return non-zero on a match and zero on a miss.
*/
static void search_match_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *azDoc[5];
  int nDoc;
  int rc;
  for(nDoc=0; nDoc<count(azDoc) && nDoc<argc; nDoc++){
    azDoc[nDoc] = (const char*)sqlite3_value_text(argv[nDoc]);
    if( azDoc[nDoc]==0 ) azDoc[nDoc] = "";
  }
  rc = search_match(&gSearch, nDoc, azDoc);
  sqlite3_result_int(context, rc);
}


/*      search_score()
**
** Return the match score for the last successful search_match call.
*/
static void search_score_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  sqlite3_result_int(context, gSearch.iScore);
}
  Search *p = (Search*)sqlite3_user_data(context);
  int score = search_score(p, (const char*)sqlite3_value_text(argv[0]));
  sqlite3_result_int(context, score);
}


/*      search_snippet()
**
** Return a snippet for the last successful search_match() call.
*/
static void search_snippet_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  if( blob_size(&gSearch.snip)>0 ){
    sqlite3_result_text(context, blob_str(&gSearch.snip), -1, fossil_free);
    blob_init(&gSearch.snip, 0, 0);
  }
}

/*       stext(TYPE, RID, ARG)
**
** This is an SQLite function that computes the searchable text.
** It is a wrapper around the search_stext() routine.  See the
** search_stext() routine for further detail.
*/
static void search_stext_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zType = (const char*)sqlite3_value_text(argv[0]);
  int rid = sqlite3_value_int(argv[1]);
  const char *zName = (const char*)sqlite3_value_text(argv[2]);
  sqlite3_result_text(context, search_stext_cached(zType[0],rid,zName,0), -1,
                      SQLITE_TRANSIENT);
}

/*       title(TYPE, RID, ARG)
**
** Return the title of the document to be search.
*/
static void search_title_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zType = (const char*)sqlite3_value_text(argv[0]);
  int rid = sqlite3_value_int(argv[1]);
  const char *zName = (const char*)sqlite3_value_text(argv[2]);
  int nHdr = 0;
  char *z = search_stext_cached(zType[0], rid, zName, &nHdr);
  if( nHdr || zType[0]!='d' ){
    sqlite3_result_text(context, z, nHdr, SQLITE_TRANSIENT);
  }else{
    sqlite3_result_value(context, argv[2]);
  }
}

/*       body(TYPE, RID, ARG)
**
** Return the body of the document to be search.
*/
static void search_body_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zType = (const char*)sqlite3_value_text(argv[0]);
  int rid = sqlite3_value_int(argv[1]);
  const char *zName = (const char*)sqlite3_value_text(argv[2]);
  int nHdr = 0;
  char *z = search_stext_cached(zType[0], rid, zName, &nHdr);
  sqlite3_result_text(context, z+nHdr+1, -1, SQLITE_TRANSIENT);
}

/*      urlencode(X)
**
** Encode a string for use as a query parameter in a URL.  This is
** the equivalent of printf("%T",X).
*/
static void search_urlencode_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  char *z = mprintf("%T",sqlite3_value_text(argv[0]));
  sqlite3_result_text(context, z, -1, fossil_free);
}

/*
** Register the "score()" SQL function to score its input text
** Register the various SQL functions (defined above) needed to implement
** using the given Search object.  Once this function is registered,
** do not delete the Search object.
** full-scan search.
*/
void search_sql_setup(Search *p){
  sqlite3_create_function(g.db, "score", 1, SQLITE_UTF8, p,
void search_sql_setup(sqlite3 *db){
  static int once = 0;
  static const int enc = SQLITE_UTF8|SQLITE_INNOCUOUS;
  if( once++ ) return;
  sqlite3_create_function(db, "search_match", -1, enc, 0,
     search_match_sqlfunc, 0, 0);
  sqlite3_create_function(db, "search_score", 0, enc, 0,
     search_score_sqlfunc, 0, 0);
  sqlite3_create_function(db, "search_snippet", 0, enc, 0,
     search_snippet_sqlfunc, 0, 0);
  sqlite3_create_function(db, "search_init", -1, enc, 0,
     search_init_sqlfunc, 0, 0);
  sqlite3_create_function(db, "stext", 3, enc, 0,
     search_stext_sqlfunc, 0, 0);
  sqlite3_create_function(db, "title", 3, enc, 0,
     search_title_sqlfunc, 0, 0);
  sqlite3_create_function(db, "body", 3, enc, 0,
     search_body_sqlfunc, 0, 0);
  sqlite3_create_function(db, "urlencode", 1, enc, 0,
     search_urlencode_sqlfunc, 0, 0);
}

/*
** Testing the search function.
**
** COMMAND: search
** %fossil search pattern...
** COMMAND: search*
**
** Usage: %fossil search [-a|-all] [-n|-limit #] [-W|-width #] pattern...
**
** Search for timeline entries matching the pattern.
** Search for timeline entries matching all words provided on the
** command line. Whole-word matches scope more highly than partial
** matches.
**
** Note:  The command only search the EVENT table.  So it will only
** display check-in comments or other comments that appear on an
** unaugmented timeline.  It does not search document text or forum
** messages.
**
** Outputs, by default, some top-N fraction of the results. The -all
** option can be used to output all matches, regardless of their search
** score.  The -limit option can be used to limit the number of entries
** returned.  The -width option can be used to set the output width used
** when printing matches.
**
** Options:
**     -a|--all          Output all matches, not just best matches
**     --debug           Show additional debug content on --fts search
**     --fts             Use the full-text search mechanism (testing only)
**     -n|--limit N      Limit output to N matches
**     --scope SCOPE     Scope of search.  Valid for --fts only.  One or
**                       more of: all, c, d, e, f, t, w.  Defaults to all.
**     -W|--width WIDTH  Set display width to WIDTH columns, 0 for
**                       unlimited. Defaults the terminal's width.
*/
void search_cmd(void){
  Search *p;
  Blob pattern;
  int i;
  Blob sql = empty_blob;
  Stmt q;
  int iBest;
  char fAll = NULL != find_option("all", "a", 0);
  const char *zLimit = find_option("limit","n",1);
  const char *zWidth = find_option("width","W",1);
  const char *zScope = find_option("scope",0,1);
  int bDebug = find_option("debug",0,0)!=0;
  int nLimit = zLimit ? atoi(zLimit) : -1000;
  int width;
  int bFts = find_option("fts",0,0)!=0;

  if( zWidth ){
    width = atoi(zWidth);
    if( (width!=0) && (width<=20) ){
      fossil_fatal("-W|--width value must be >20 or 0");
    }
  }else{
    width = -1;
  }
  db_must_be_within_tree();
  if( g.argc<2 ) return;

  db_find_and_open_repository(0, 0);
  if( g.argc<3 ) return;
  blob_init(&pattern, g.argv[2], -1);
  for(i=3; i<g.argc; i++){
    blob_appendf(&pattern, " %s", g.argv[i]);
  }
  if( bFts ){
    /* Search using FTS */
    Blob com;
    Blob snip;
    const char *zPattern = blob_str(&pattern);
    int srchFlags;
    unsigned int j;
    if( zScope==0 ){
      srchFlags = SRCH_ALL;
    }else{
      srchFlags = 0;
      for(i=0; zScope[i]; i++){
        switch( zScope[i] ){
          case 'a':  srchFlags = SRCH_ALL;  break;
          case 'c':  srchFlags |= SRCH_CKIN;     break;
          case 'd':  srchFlags |= SRCH_DOC;      break;
          case 'e':  srchFlags |= SRCH_TECHNOTE; break;
          case 'f':  srchFlags |= SRCH_FORUM;    break;
          case 't':  srchFlags |= SRCH_TKT;      break;
          case 'w':  srchFlags |= SRCH_WIKI;     break;
        }
      }
    }
    search_sql_setup(g.db);
    add_content_sql_commands(g.db);
    db_multi_exec(
      "CREATE TEMP TABLE x(label,url,score,id,date,snip);"
    );
    if( !search_index_exists() ){
      search_fullscan(zPattern, srchFlags);  /* Full-scan search */
    }else{
      search_update_index(srchFlags);        /* Update the index */
      search_indexed(zPattern, srchFlags);   /* Indexed search */
    }
    db_prepare(&q, "SELECT snip, label, score, id, date"
                   "  FROM x"
                   " ORDER BY score DESC, date DESC;");
    blob_init(&com, 0, 0);
    blob_init(&snip, 0, 0);
    if( width<0 ) width = 80;
    while( db_step(&q)==SQLITE_ROW ){
      const char *zSnippet = db_column_text(&q, 0);
      const char *zLabel = db_column_text(&q, 1);
      const char *zDate = db_column_text(&q, 4);
      const char *zScore = db_column_text(&q, 2);
      const char *zId = db_column_text(&q, 3);
      blob_appendf(&snip, "%s", zSnippet);
      for(j=0; j<snip.nUsed; j++){
        if( snip.aData[j]=='\n' ){
          if( j>0 && snip.aData[j-1]=='\r' ) snip.aData[j-1] = ' ';
          snip.aData[j] = ' ';
        }
      }
      blob_appendf(&com, "%s\n%s\n%s", zLabel, blob_str(&snip), zDate);
      if( bDebug ){
        blob_appendf(&com," score: %s id: %s", zScore, zId);
      }
      comment_print(blob_str(&com), 0, 5, width,
            COMMENT_PRINT_TRIM_CRLF |
            COMMENT_PRINT_WORD_BREAK |
            COMMENT_PRINT_TRIM_SPACE);
      blob_reset(&com);
      blob_reset(&snip);
      if( nLimit>=1 ){
        nLimit--;
        if( nLimit==0 ) break;
      }
    }
    db_finalize(&q);
    blob_reset(&pattern);
  }else{
    /* Legacy timeline search (the default) */
  p = search_init(blob_str(&pattern));
  blob_reset(&pattern);
  search_sql_setup(p);
    (void)search_init(blob_str(&pattern),"*","*","...",SRCHFLG_STATIC);
    blob_reset(&pattern);
    search_sql_setup(g.db);

    db_multi_exec(
       "CREATE TEMP TABLE srch(rid,uuid,date,comment,x);"
       "CREATE INDEX srch_idx1 ON srch(x);"
       "INSERT INTO srch(rid,uuid,date,comment,x)"
       "   SELECT blob.rid, uuid, datetime(event.mtime,toLocal()),"
       "          coalesce(ecomment,comment),"
       "          search_score()"
       "     FROM event, blob"
       "    WHERE blob.rid=event.objid"
       "      AND search_match(coalesce(ecomment,comment));"
    );
    iBest = db_int(0, "SELECT max(x) FROM srch");
    blob_append(&sql,
                "SELECT rid, uuid, date, comment, 0, 0 FROM srch "
                "WHERE 1 ", -1);
    if(!fAll){
      blob_append_sql(&sql,"AND x>%d ", iBest/3);
    }
    blob_append(&sql, "ORDER BY x DESC, date DESC ", -1);
    db_prepare(&q, "%s", blob_sql_text(&sql));
    blob_reset(&sql);
    print_timeline(&q, nLimit, width, 0, 0);
    db_finalize(&q);
  }
}

#if INTERFACE
/* What to search for */
#define SRCH_CKIN     0x0001    /* Search over check-in comments */
#define SRCH_DOC      0x0002    /* Search over embedded documents */
#define SRCH_TKT      0x0004    /* Search over tickets */
#define SRCH_WIKI     0x0008    /* Search over wiki */
#define SRCH_TECHNOTE 0x0010    /* Search over tech notes */
#define SRCH_FORUM    0x0020    /* Search over forum messages */
#define SRCH_ALL      0x003f    /* Search over everything */
#endif

/*
** Remove bits from srchFlags which are disallowed by either the
** current server configuration or by user permissions.  Return
** the revised search flags mask.
*/
unsigned int search_restrict(unsigned int srchFlags){
  static unsigned int knownGood = 0;
  static unsigned int knownBad = 0;
  static const struct { unsigned m; const char *zKey; } aSetng[] = {
     { SRCH_CKIN,     "search-ci"   },
     { SRCH_DOC,      "search-doc"  },
     { SRCH_TKT,      "search-tkt"  },
     { SRCH_WIKI,     "search-wiki" },
     { SRCH_TECHNOTE, "search-technote" },
     { SRCH_FORUM,    "search-forum" },
  };
  int i;
  if( g.perm.Read==0 )   srchFlags &= ~(SRCH_CKIN|SRCH_DOC|SRCH_TECHNOTE);
  if( g.perm.RdTkt==0 )  srchFlags &= ~(SRCH_TKT);
  if( g.perm.RdWiki==0 ) srchFlags &= ~(SRCH_WIKI);
  if( g.perm.RdForum==0) srchFlags &= ~(SRCH_FORUM);
  for(i=0; i<count(aSetng); i++){
    unsigned int m = aSetng[i].m;
    if( (srchFlags & m)==0 ) continue;
    if( ((knownGood|knownBad) & m)!=0 ) continue;
    if( db_get_boolean(aSetng[i].zKey,0) ){
      knownGood |= m;
    }else{
      knownBad |= m;
    }
  }
  return srchFlags & ~knownBad;
}

/*
** When this routine is called, there already exists a table
**
**       x(label,url,score,id,snip).
**
** label:  The "name" of the document containing the match
** url:    A URL for the document
** score:  How well the document matched
** id:     The document id.  Format: xNNNNN, x: type, N: number
** snip:   A snippet for the match
**
** And the srchFlags parameter has been validated.  This routine
** fills the X table with search results using a full-scan search.
**
** The companion indexed search routine is search_indexed().
*/
LOCAL void search_fullscan(
  const char *zPattern,       /* The query pattern */
  unsigned int srchFlags      /* What to search over */
){
  search_init(zPattern, "<mark>", "</mark>", " ... ",
          SRCHFLG_STATIC|SRCHFLG_HTML);
  if( (srchFlags & SRCH_DOC)!=0 ){
    char *zDocGlob = db_get("doc-glob","");
    char *zDocBr = db_get("doc-branch","trunk");
    if( zDocGlob && zDocGlob[0] && zDocBr && zDocBr[0] ){
      Glob * pGlob = glob_create(zDocBr)
        /* We're misusing a Glob as a list of comma-/space-delimited
        ** tokens. We're not actually doing glob matches here. */;
      int i;
      db_multi_exec(
        "CREATE VIRTUAL TABLE IF NOT EXISTS temp.foci USING files_of_checkin;"
      );
      for( i = 0; i < pGlob->nPattern; ++i ){
        const char * zBranch = pGlob->azPattern[i];
        db_multi_exec(
          "INSERT INTO x(label,url,score,id,date,snip)"
          "  SELECT printf('Document: %%s',title('d',blob.rid,foci.filename)),"
          "         printf('/doc/%T/%%s',foci.filename),"
          "         search_score(),"
          "         'd'||blob.rid,"
          "         (SELECT datetime(event.mtime) FROM event"
          "            WHERE objid=symbolic_name_to_rid(%Q)),"
          "         search_snippet()"
          "    FROM foci CROSS JOIN blob"
          "   WHERE checkinID=symbolic_name_to_rid(%Q)"
          "     AND blob.uuid=foci.uuid"
          "     AND search_match(title('d',blob.rid,foci.filename),"
          "                      body('d',blob.rid,foci.filename))"
          "     AND %z",
          zBranch, zBranch, zBranch, glob_expr("foci.filename", zDocGlob)
        );
      }
      glob_free(pGlob);
    }
    fossil_free(zDocGlob);
    fossil_free(zDocBr);
  }
  if( (srchFlags & SRCH_WIKI)!=0 ){
    db_multi_exec(
      "WITH wiki(name,rid,mtime) AS ("
      "  SELECT substr(tagname,6), tagxref.rid, max(tagxref.mtime)"
      "    FROM tag, tagxref"
      "   WHERE tag.tagname GLOB 'wiki-*'"
      "     AND tagxref.tagid=tag.tagid"
      "   GROUP BY 1"
      ")"
      "INSERT INTO x(label,url,score,id,date,snip)"
      "  SELECT printf('Wiki: %%s',name),"
      "         printf('/wiki?name=%%s',urlencode(name)),"
      "         search_score(),"
      "         'w'||rid,"
      "         datetime(mtime),"
      "         search_snippet()"
      "    FROM wiki"
      "   WHERE search_match(title('w',rid,name),body('w',rid,name));"
    );
  }
  if( (srchFlags & SRCH_CKIN)!=0 ){
    db_multi_exec(
      "WITH ckin(uuid,rid,mtime) AS ("
      "  SELECT blob.uuid, event.objid, event.mtime"
      "    FROM event, blob"
      "   WHERE event.type='ci'"
      "     AND blob.rid=event.objid"
      ")"
      "INSERT INTO x(label,url,score,id,date,snip)"
      "  SELECT printf('Check-in [%%.10s] on %%s',uuid,datetime(mtime)),"
      "         printf('/timeline?c=%%s',uuid),"
      "         search_score(),"
      "         'c'||rid,"
      "         datetime(mtime),"
      "         search_snippet()"
      "    FROM ckin"
      "   WHERE search_match('',body('c',rid,NULL));"
    );
  }
  if( (srchFlags & SRCH_TKT)!=0 ){
    db_multi_exec(
      "INSERT INTO x(label,url,score,id,date,snip)"
      "  SELECT printf('Ticket: %%s (%%s)',title('t',tkt_id,NULL),"
                      "datetime(tkt_mtime)),"
      "         printf('/tktview/%%.20s',tkt_uuid),"
      "         search_score(),"
      "         't'||tkt_id,"
      "         datetime(tkt_mtime),"
      "         search_snippet()"
      "    FROM ticket"
      "   WHERE search_match(title('t',tkt_id,NULL),body('t',tkt_id,NULL));"
    );
  }
  if( (srchFlags & SRCH_TECHNOTE)!=0 ){
    db_multi_exec(
      "WITH technote(uuid,rid,mtime) AS ("
      "  SELECT substr(tagname,7), tagxref.rid, max(tagxref.mtime)"
      "    FROM tag, tagxref"
      "   WHERE tag.tagname GLOB 'event-*'"
      "     AND tagxref.tagid=tag.tagid"
      "   GROUP BY 1"
      ")"
      "INSERT INTO x(label,url,score,id,date,snip)"
      "  SELECT printf('Tech Note: %%s',uuid),"
      "         printf('/technote/%%s',uuid),"
      "         search_score(),"
      "         'e'||rid,"
      "         datetime(mtime),"
      "         search_snippet()"
      "    FROM technote"
      "   WHERE search_match('',body('e',rid,NULL));"
    );
  }
  if( (srchFlags & SRCH_FORUM)!=0 ){
    db_multi_exec(
      "INSERT INTO x(label,url,score,id,date,snip)"
      "  SELECT 'Forum '||comment,"
      "         '/forumpost/'||uuid,"
      "         search_score(),"
      "         'f'||rid,"
      "         datetime(event.mtime),"
      "         search_snippet()"
      "    FROM event JOIN blob on event.objid=blob.rid"
      "   WHERE search_match('',body('f',rid,NULL));"
    );
  }
}

/*
** Number of significant bits in a u32
*/
static int nbits(u32 x){
  int n = 0;
  while( x ){ n++; x >>= 1; }
  return n;
}

/*
** Implemenation of the rank() function used with rank(matchinfo(*,'pcsx')).
*/
static void search_rank_sqlfunc(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const unsigned *aVal = (unsigned int*)sqlite3_value_blob(argv[0]);
  int nVal = sqlite3_value_bytes(argv[0])/4;
  int nCol;           /* Number of columns in the index */
  int nTerm;          /* Number of search terms in the query */
  int i, j;           /* Loop counter */
  double r = 0.0;     /* Score */
  const unsigned *aX, *aS;

  if( nVal<2 ) return;
  nTerm = aVal[0];
  nCol = aVal[1];
  if( nVal<2+3*nCol*nTerm+nCol ) return;
  aS = aVal+2;
  aX = aS+nCol;
  for(j=0; j<nCol; j++){
    double x;
    if( aS[j]>0 ){
      x = 0.0;
      for(i=0; i<nTerm; i++){
        int hits_this_row;
        int hits_all_rows;
        int rows_with_hit;
        double avg_hits_per_row;

        hits_this_row = aX[j + i*nCol*3];
        if( hits_this_row==0 )continue;
        hits_all_rows = aX[j + i*nCol*3 + 1];
        rows_with_hit = aX[j + i*nCol*3 + 2];
        if( rows_with_hit==0 ) continue;
        avg_hits_per_row = hits_all_rows/(double)rows_with_hit;
        x += hits_this_row/(avg_hits_per_row*nbits(rows_with_hit));
      }
      x *= (1<<((30*(aS[j]-1))/nTerm));
    }else{
      x = 0.0;
    }
    r = r*10.0 + x;
  }
#define SEARCH_DEBUG_RANK 0
#if SEARCH_DEBUG_RANK
  {
    Blob x;
    blob_init(&x,0,0);
    blob_appendf(&x,"%08x", (int)r);
    for(i=0; i<nVal; i++){
      blob_appendf(&x," %d", aVal[i]);
    }
    blob_appendf(&x," r=%g", r);
    sqlite3_result_text(context, blob_str(&x), -1, fossil_free);
  }
#else
  sqlite3_result_double(context, r);
#endif
}

/*
** Expects a search pattern string. Makes a copy of the string,
** replaces all non-alphanum ASCII characters with a space, and
** lower-cases all upper-case ASCII characters. The intent is to avoid
** causing errors in FTS5 searches with inputs which contain AND, OR,
** and symbols like #. The caller is responsible for passing the
** result to fossil_free().
*/
char *search_simplify_pattern(const char * zPattern){
  char *zPat = mprintf("%s",zPattern);
  int i;
  for(i=0; zPat[i]; i++){
    if( (zPat[i]&0x80)==0 && !fossil_isalnum(zPat[i]) ) zPat[i] = ' ';
    if( fossil_isupper(zPat[i]) ) zPat[i] = fossil_tolower(zPat[i]);
  }
  for(i--; i>=0 && zPat[i]==' '; i--){}
  if( i<0 ){
    fossil_free(zPat);
    zPat = mprintf("\"\"");
  }
  return zPat;
}

/*
** When this routine is called, there already exists a table
**
**       x(label,url,score,id,snip).
**
** label:  The "name" of the document containing the match
** url:    A URL for the document
** score:  How well the document matched
** id:     The document id.  Format: xNNNNN, x: type, N: number
** snip:   A snippet for the match
**
** And the srchFlags parameter has been validated.  This routine
** fills the X table with search results using FTS indexed search.
**
** The companion full-scan search routine is search_fullscan().
*/
LOCAL void search_indexed(
  const char *zPattern,       /* The query pattern */
  unsigned int srchFlags      /* What to search over */
){
  Blob sql;
  char *zPat;
  static const char *zSnippetCall;
  if( srchFlags==0 ) return;
  sqlite3_create_function(g.db, "rank", 1, SQLITE_UTF8|SQLITE_INNOCUOUS, 0,
     search_rank_sqlfunc, 0, 0);
  zPat = search_simplify_pattern(zPattern);
  blob_init(&sql, 0, 0);
  if( search_index_type(0)==4 ){
    /* If this repo is still using the legacy FTS4 search index, then
    ** the snippet() function is slightly different */
    zSnippetCall = "snippet(ftsidx,'<mark>','</mark>',' ... ',-1,35)";
  }else{
    /* This is the common case - Using newer FTS5 search index */
    zSnippetCall = "snippet(ftsidx,-1,'<mark>','</mark>',' ... ',35)";
  }
  blob_appendf(&sql,
    "INSERT INTO x(label,url,score,id,date,snip) "
    " SELECT ftsdocs.label,"
    "        ftsdocs.url,"
    "        rank(matchinfo(ftsidx,'pcsx')),"
    "        ftsdocs.type || ftsdocs.rid,"
    "        datetime(ftsdocs.mtime),"
    "        %s"
    "   FROM ftsidx CROSS JOIN ftsdocs"
    "  WHERE ftsidx MATCH %Q"
    "    AND ftsdocs.rowid=ftsidx.rowid",
    zSnippetCall /*safe-for-%s*/, zPat
  );
  fossil_free(zPat);
  if( srchFlags!=SRCH_ALL ){
    const char *zSep = " AND (";
    static const struct { unsigned m; char c; } aMask[] = {
       { SRCH_CKIN,     'c' },
       { SRCH_DOC,      'd' },
       { SRCH_TKT,      't' },
       { SRCH_WIKI,     'w' },
       { SRCH_TECHNOTE, 'e' },
       { SRCH_FORUM,    'f' },
    };
    int i;
    for(i=0; i<count(aMask); i++){
      if( srchFlags & aMask[i].m ){
        blob_appendf(&sql, "%sftsdocs.type='%c'", zSep, aMask[i].c);
        zSep = " OR ";
      }
    }
    blob_append(&sql,")",1);
  }
  db_multi_exec("%s",blob_str(&sql)/*safe-for-%s*/);
#if SEARCH_DEBUG_RANK
  db_multi_exec("UPDATE x SET label=printf('%%s (score=%%s)',label,score)");
#endif
}

/*
** If z[] is of the form "<mark>TEXT</mark>" where TEXT contains
** no white-space or punctuation, then return the length of the mark.
*/
static int isSnippetMark(const char *z){
  int n;
  if( strncmp(z,"<mark>",6)!=0 ) return 0;
  n = 6;
  while( fossil_isalnum(z[n]) ) n++;
  if( strncmp(&z[n],"</mark>",7)!=0 ) return 0;
  return n+7;
}

/*
** Return a copy of zSnip (in memory obtained from fossil_malloc()) that
** has all "<" characters, other than those on <mark> and </mark>,
** converted into "&lt;".  This is similar to htmlize() except that
** <mark> and </mark> are preserved.
*/
static char *cleanSnippet(const char *zSnip){
  int i;
  int n = 0;
  char *z;
  if( zSnip==0 ) zSnip = "";
  for(i=0; zSnip[i]; i++) if( zSnip[i]=='<' ) n++;
  z = fossil_malloc( i+n*4+1 );
  i = 0;
  while( zSnip[0] ){
    if( zSnip[0]=='<' ){
      n = isSnippetMark(zSnip);
      if( n ){
        memcpy(&z[i], zSnip, n);
        zSnip += n;
        i += n;
        continue;
      }else{
        memcpy(&z[i], "&lt;", 4);
        i += 4;
        zSnip++;
      }
    }else{
      z[i++] = zSnip[0];
      zSnip++;
    }
  }
  z[i] = 0;
  return z;
}


/*
** This routine generates web-page output for a search operation.
** Other web-pages can invoke this routine to add search results
** in the middle of the page.
**
** This routine works for both full-scan and indexed search.  The
** appropriate low-level search routine is called according to the
** current configuration.
**
** Return the number of rows.
*/
int search_run_and_output(
  const char *zPattern,       /* The query pattern */
  unsigned int srchFlags,     /* What to search over */
  int fDebug                  /* Extra debugging output */
){
  Stmt q;
  int nRow = 0;
  int nLimit = db_get_int("search-limit", 100);

  if( P("searchlimit")!=0 ){
    nLimit = atoi(P("searchlimit"));
  }
  srchFlags = search_restrict(srchFlags);
  if( srchFlags==0 ) return 0;
  search_sql_setup(g.db);
  add_content_sql_commands(g.db);
  db_multi_exec(
    "CREATE TEMP TABLE x(label,url,score,id,date,snip);"
  );
  if( !search_index_exists() ){
    search_fullscan(zPattern, srchFlags);  /* Full-scan search */
  }else{
    search_update_index(srchFlags);        /* Update the index, if necessary */
    search_indexed(zPattern, srchFlags);   /* Indexed search */
  }
  db_prepare(&q, "SELECT url, snip, label, score, id, substr(date,1,10)"
                 "  FROM x"
                 " ORDER BY score DESC, date DESC;");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUrl = db_column_text(&q, 0);
    const char *zSnippet = db_column_text(&q, 1);
    const char *zLabel = db_column_text(&q, 2);
    const char *zDate = db_column_text(&q, 5);
    if( nRow==0 ){
      @ <ol>
    }
    nRow++;
    @ <li><p><a href='%R%s(zUrl)'>%h(zLabel)</a>
    if( fDebug ){
      @ (%e(db_column_double(&q,3)), %s(db_column_text(&q,4))
    }
    @ <br><span class='snippet'>%z(cleanSnippet(zSnippet)) \
    if( zLabel && zDate && zDate[0] && strstr(zLabel,zDate)==0 ){
      @ <small>(%h(zDate))</small>
    }
    @ </span></li>
    if( nLimit && nRow>=nLimit ) break;
  }
  db_finalize(&q);
  if( nRow ){
    @ </ol>
  }
  return nRow;
}

/*
** Generate some HTML for doing search.  At a minimum include the
** Search-Text entry form.  If the "s" query parameter is present, also
** show search results.
**
** The srchFlags parameter restricts the set of documents to be searched.
** srchFlags should normally be either a single search category or all
** categories.  Any srchFlags with two or more bits set
** is treated like SRCH_ALL for display purposes.
**
** This routine automatically restricts srchFlag according to user
** permissions and the server configuration.  The entry box is shown
** disabled if srchFlags is 0 after these restrictions are applied.
**
** The mFlags value controls options:
**
**     0x01    If the y= query parameter is present, use it as an addition
**             restriction what to search.
**
**     0x02    Show nothing if search is disabled.
**
** Return true if there are search results.
*/
int search_screen(unsigned srchFlags, int mFlags){
  const char *zType = 0;
  const char *zClass = 0;
  const char *zDisable1;
  const char *zDisable2;
  const char *zPattern;
  int fDebug = PB("debug");
  int haveResult = 0;
  srchFlags = search_restrict(srchFlags);
  switch( srchFlags ){
    case SRCH_CKIN:     zType = " Check-ins";  zClass = "Ckin"; break;
    case SRCH_DOC:      zType = " Docs";       zClass = "Doc";  break;
    case SRCH_TKT:      zType = " Tickets";    zClass = "Tkt";  break;
    case SRCH_WIKI:     zType = " Wiki";       zClass = "Wiki"; break;
    case SRCH_TECHNOTE: zType = " Tech Notes"; zClass = "Note"; break;
    case SRCH_FORUM:    zType = " Forum";      zClass = "Frm";  break;
  }
  if( srchFlags==0 ){
    if( mFlags & 0x02 ) return 0;
    zDisable1 = " disabled";
    zDisable2 = " disabled";
    zPattern = "";
  }else{
    zDisable1 = ""; /* Was: " autofocus" */
    zDisable2 = "";
    zPattern = PD("s","");
  }
  @ <form method='GET' action='%R/%T(g.zPath)'>
  if( zClass ){
    @ <div class='searchForm searchForm%s(zClass)'>
  }else{
    @ <div class='searchForm'>
  }
  @ <input type="text" name="s" size="40" value="%h(zPattern)"%s(zDisable1)>
  if( (mFlags & 0x01)!=0 && (srchFlags & (srchFlags-1))!=0 ){
    static const struct { const char *z; const char *zNm; unsigned m; } aY[] = {
       { "all",  "All",        SRCH_ALL      },
       { "c",    "Check-ins",  SRCH_CKIN     },
       { "d",    "Docs",       SRCH_DOC      },
       { "t",    "Tickets",    SRCH_TKT      },
       { "w",    "Wiki",       SRCH_WIKI     },
       { "e",    "Tech Notes", SRCH_TECHNOTE },
       { "f",    "Forum",      SRCH_FORUM    },
    };
    const char *zY = PD("y","all");
    unsigned newFlags = srchFlags;
    int i;
    @ <select size='1' name='y'>
    for(i=0; i<count(aY); i++){
      if( (aY[i].m & srchFlags)==0 ) continue;
      cgi_printf("<option value='%s'", aY[i].z);
      if( fossil_strcmp(zY,aY[i].z)==0 ){
        newFlags &= aY[i].m;
        cgi_printf(" selected");
      }
      cgi_printf(">%s</option>\n", aY[i].zNm);
    }
    @ </select>
    srchFlags = newFlags;
  }
  if( fDebug ){
    @ <input type="hidden" name="debug" value="1">
  }
  @ <input type="submit" value="Search%s(zType)"%s(zDisable2)>
  if( srchFlags==0 ){
    @ <p class="generalError">Search is disabled</p>
  }
  @ </div></form>
  while( fossil_isspace(zPattern[0]) ) zPattern++;
  if( zPattern[0] ){
    if( zClass ){
      @ <div class='searchResult searchResult%s(zClass)'>
    }else{
      @ <div class='searchResult'>
    }
    if( search_run_and_output(zPattern, srchFlags, fDebug)==0 ){
      @ <p class='searchEmpty'>No matches for: <span>%h(zPattern)</span></p>
    }
    @ </div>
    haveResult = 1;
  }
  return haveResult;
}

/*
** WEBPAGE: search
**
** Search for check-in comments, documents, tickets, or wiki that
** match a user-supplied pattern.
**
**    s=PATTERN       Specify the full-text pattern to search for
**    y=TYPE          What to search.
**                      c -> check-ins
**                      d -> documentation
**                      t -> tickets
**                      w -> wiki
**                      e -> tech notes
**                      f -> forum
**                    all -> everything
*/
void search_page(void){
  const int isSearch = P("s")!=0;
  login_check_credentials();
  style_header("Search%s", isSearch ? " Results" : "");
  cgi_check_for_malice();
  search_screen(SRCH_ALL, 1);
  style_finish_page();
}


/*
** This is a helper function for search_stext().  Writing into pOut
** the search text obtained from pIn according to zMimetype.
**
** If a title is not specified in zTitle (e.g. for wiki pages that do not
** include the title in the body), it is determined from the page content.
**
** The title of the document is the first line of text.  All subsequent
** lines are the body.  If the document has no title, the first line
** is blank.
*/
static void get_stext_by_mimetype(
  Blob *pIn,
  const char *zMimetype,
  const char *zTitle,
  Blob *pOut
){
  Blob html, title;
  Blob *pHtml = &html;
  blob_init(&html, 0, 0);
  if( zTitle==0 ){
    blob_init(&title, 0, 0);
  }else{
    blob_init(&title, zTitle, -1);
  }
  if( zMimetype==0 ) zMimetype = "text/plain";
  if( fossil_strcmp(zMimetype,"text/x-fossil-wiki")==0 ){
    if( blob_size(&title) ){
      wiki_convert(pIn, &html, 0);
    }else{
      Blob tail;
      blob_init(&tail, 0, 0);
      if( wiki_find_title(pIn, &title, &tail) ){
        blob_appendf(pOut, "%s\n", blob_str(&title));
        wiki_convert(&tail, &html, 0);
        blob_reset(&tail);
      }else{
        blob_append(pOut, "\n", 1);
        wiki_convert(pIn, &html, 0);
      }
    }
    html_to_plaintext(blob_str(&html), pOut);
  }else if( fossil_strcmp(zMimetype,"text/x-markdown")==0 ){
    markdown_to_html(pIn, blob_size(&title) ? NULL : &title, &html);
  }else if( fossil_strcmp(zMimetype,"text/html")==0 ){
    if( blob_size(&title)==0 ) doc_is_embedded_html(pIn, &title);
    pHtml = pIn;
  }
  blob_appendf(pOut, "%s\n", blob_str(&title));
  if( blob_size(pHtml) ){
    html_to_plaintext(blob_str(pHtml), pOut);
  }else{
    blob_append(pOut, blob_buffer(pIn), blob_size(pIn));
  }
  blob_reset(&html);
  blob_reset(&title);
}

/*
** Query pQuery is pointing at a single row of output.  Append a text
** representation of every text-compatible column to pAccum.
*/
static void append_all_ticket_fields(Blob *pAccum, Stmt *pQuery, int iTitle){
  int n = db_column_count(pQuery);
  int i;
  const char *zMime = 0;
  if( iTitle>=0 && iTitle<n ){
    if( db_column_type(pQuery,iTitle)==SQLITE_TEXT ){
      blob_append(pAccum, db_column_text(pQuery,iTitle), -1);
    }
    blob_append(pAccum, "\n", 1);
  }
  for(i=0; i<n; i++){
    const char *zColName = db_column_name(pQuery,i);
    int eType = db_column_type(pQuery,i);
    if( i==iTitle ) continue;
    if( fossil_strnicmp(zColName,"tkt_",4)==0 ) continue;
    if( fossil_strnicmp(zColName,"private_",8)==0 ) continue;
    if( eType==SQLITE_BLOB || eType==SQLITE_NULL ) continue;
    if( fossil_stricmp(zColName,"mimetype")==0 ){
      zMime = db_column_text(pQuery,i);
      if( fossil_strcmp(zMime,"text/plain")==0 ) zMime = 0;
    }else if( zMime==0 || eType!=SQLITE_TEXT ){
      blob_appendf(pAccum, "%s: %s |\n", zColName, db_column_text(pQuery,i));
    }else{
      Blob txt;
      blob_init(&txt, db_column_text(pQuery,i), -1);
      blob_appendf(pAccum, "%s: ", zColName);
      get_stext_by_mimetype(&txt, zMime, NULL, pAccum);
      blob_append(pAccum, " |", 2);
      blob_reset(&txt);
    }
  }
}


/*
** Return "search text" - a reduced version of a document appropriate for
** full text search and/or for constructing a search result snippet.
**
**    cType:            d      Embedded documentation
**                      w      Wiki page
**                      c      Check-in comment
**                      t      Ticket text
**                      e      Tech note
**                      f      Forum
**
**    rid               The RID of an artifact that defines the object
**                      being searched.
**
**    zName             Name of the object being searched.  This is used
**                      only to help figure out the mimetype (text/plain,
**                      test/html, test/x-fossil-wiki, or text/x-markdown)
**                      so that the code can know how to simplify the text.
*/
void search_stext(
  char cType,            /* Type of document */
  int rid,               /* BLOB.RID or TAG.TAGID value for document */
  const char *zName,     /* Auxiliary information */
  Blob *pOut             /* OUT: Initialize to the search text */
){
  blob_init(pOut, 0, 0);
  switch( cType ){
    case 'd': {   /* Documents */
      Blob doc;
      content_get(rid, &doc);
      blob_to_utf8_no_bom(&doc, 0);
      get_stext_by_mimetype(&doc, mimetype_from_name(zName), NULL, pOut);
      blob_reset(&doc);
      break;
    }
    case 'f':     /* Forum messages */
    case 'e':     /* Tech Notes */
    case 'w': {   /* Wiki */
      Manifest *pWiki = manifest_get(rid,
          cType == 'e' ? CFTYPE_EVENT :
          cType == 'f' ? CFTYPE_FORUM : CFTYPE_WIKI, 0);
      Blob wiki;
      if( pWiki==0 ) break;
      if( cType=='f' ){
        blob_init(&wiki, 0, 0);
        if( pWiki->zThreadTitle ){
          blob_appendf(&wiki, "<h1>%h</h1>\n", pWiki->zThreadTitle);
        }
        blob_appendf(&wiki, "From %s:\n\n%s", pWiki->zUser, pWiki->zWiki);
      }else{
        blob_init(&wiki, pWiki->zWiki, -1);
      }
      get_stext_by_mimetype(&wiki, wiki_filter_mimetypes(pWiki->zMimetype),
                            cType=='w' ? pWiki->zWikiTitle : NULL, pOut);
      blob_reset(&wiki);
      manifest_destroy(pWiki);
      break;
    }
    case 'c': {   /* Check-in Comments */
      static Stmt q;
      static int isPlainText = -1;
      db_static_prepare(&q,
         "SELECT coalesce(ecomment,comment)"
         "  ||' (user: '||coalesce(euser,user,'?')"
         "  ||', tags: '||"
         "  (SELECT group_concat(substr(tag.tagname,5),',')"
         "     FROM tag, tagxref"
         "    WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid"
         "      AND tagxref.rid=event.objid AND tagxref.tagtype>0)"
         "  ||')'"
         "  FROM event WHERE objid=:x AND type='ci'");
      if( isPlainText<0 ){
        isPlainText = db_get_boolean("timeline-plaintext",0);
      }
      db_bind_int(&q, ":x", rid);
      if( db_step(&q)==SQLITE_ROW ){
        blob_append(pOut, "\n", 1);
        if( isPlainText ){
          db_column_blob(&q, 0, pOut);
        }else{
          Blob x;
          blob_init(&x,0,0);
          db_column_blob(&q, 0, &x);
          get_stext_by_mimetype(&x, "text/x-fossil-wiki", NULL, pOut);
          blob_reset(&x);
        }
      }
      db_reset(&q);
      break;
    }
    case 't': {   /* Tickets */
      static Stmt q1;
      static int iTitle = -1;
      db_static_prepare(&q1, "SELECT * FROM ticket WHERE tkt_id=:rid");
      db_bind_int(&q1, ":rid", rid);
      if( db_step(&q1)==SQLITE_ROW ){
        if( iTitle<0 ){
          int n = db_column_count(&q1);
          for(iTitle=0; iTitle<n; iTitle++){
            if( fossil_stricmp(db_column_name(&q1,iTitle),"title")==0 ) break;
          }
        }
        append_all_ticket_fields(pOut, &q1, iTitle);
      }
      db_reset(&q1);
      if( db_table_exists("repository","ticketchng") ){
        static Stmt q2;
        db_static_prepare(&q2, "SELECT * FROM ticketchng WHERE tkt_id=:rid"
                               "  ORDER BY tkt_mtime");
        db_bind_int(&q2, ":rid", rid);
        while( db_step(&q2)==SQLITE_ROW ){
          append_all_ticket_fields(pOut, &q2, -1);
        }
        db_reset(&q2);
      }
      break;
    }
  }
}

/*
** This routine is a wrapper around search_stext().
**
** This routine looks up the search text, stores it in an internal
** buffer, and returns a pointer to the text.  Subsequent requests
** for the same document return the same pointer.  The returned pointer
** is valid until the next invocation of this routine.  Call this routine
** with an eType of 0 to clear the cache.
*/
char *search_stext_cached(
  char cType,            /* Type of document */
  int rid,               /* BLOB.RID or TAG.TAGID value for document */
  const char *zName,     /* Auxiliary information, for mimetype */
  int *pnTitle           /* OUT: length of title in bytes excluding \n */
){
  static struct {
    Blob stext;          /* Cached search text */
    char cType;          /* The type */
    int rid;             /* The RID */
    int nTitle;          /* Number of bytes in title */
  } cache;
  int i;
  char *z;
  if( cType!=cache.cType || rid!=cache.rid ){
    if( cache.rid>0 ){
      blob_reset(&cache.stext);
    }else{
      blob_init(&cache.stext,0,0);
    }
    cache.cType = cType;
    cache.rid = rid;
    if( cType==0 ) return 0;
    search_stext(cType, rid, zName, &cache.stext);
    z  = blob_str(&cache.stext);
    for(i=0; z[i] && z[i]!='\n'; i++){}
    cache.nTitle = i;
  }
  if( pnTitle ) *pnTitle = cache.nTitle;
  return blob_str(&cache.stext);
}

/*
** COMMAND: test-search-stext
**
** Usage: fossil test-search-stext TYPE RID NAME
**
** Compute the search text for document TYPE-RID whose name is NAME.
** The TYPE is one of "c", "d", "t", "w", or "e".  The RID is the document
** ID.  The NAME is used to figure out a mimetype to use for formatting
** the raw document text.
*/
void test_search_stext(void){
  Blob out;
  db_find_and_open_repository(0,0);
  if( g.argc!=5 ) usage("TYPE RID NAME");
  search_stext(g.argv[2][0], atoi(g.argv[3]), g.argv[4], &out);
  fossil_print("%s\n",blob_str(&out));
  blob_reset(&out);
}

/*
** COMMAND: test-convert-stext
**
** Usage: fossil test-convert-stext FILE MIMETYPE
**
** Read the content of FILE and convert it to stext according to MIMETYPE.
** Send the result to standard output.
*/
void test_convert_stext(void){
  Blob in, out;
  db_find_and_open_repository(0,0);
  if( g.argc!=4 ) usage("FILENAME MIMETYPE");
  blob_read_from_file(&in, g.argv[2], ExtFILE);
  blob_init(&out, 0, 0);
  get_stext_by_mimetype(&in, g.argv[3], NULL, &out);
  fossil_print("%s\n",blob_str(&out));
  blob_reset(&in);
  blob_reset(&out);
}

/*
** The schema for the full-text index. The %s part must be an empty
** string or a comma followed by additional flags for the FTS virtual
** table.
*/
static const char zFtsSchema[] =
@ -- One entry for each possible search result
@ CREATE TABLE IF NOT EXISTS repository.ftsdocs(
@   rowid INTEGER PRIMARY KEY, -- Maps to the ftsidx.rowid
@   type CHAR(1),              -- Type of document
@   rid INTEGER,               -- BLOB.RID or TAG.TAGID for the document
@   name TEXT,                 -- Additional document description
@   idxed BOOLEAN,             -- True if currently in the index
@   label TEXT,                -- Label to print on search results
@   url TEXT,                  -- URL to access this document
@   mtime DATE,                -- Date when document created
@   bx TEXT,                   -- Temporary "body" content cache
@   UNIQUE(type,rid)
@ );
@ CREATE INDEX repository.ftsdocIdxed ON ftsdocs(type,rid,name) WHERE idxed==0;
@ CREATE INDEX repository.ftsdocName ON ftsdocs(name) WHERE type='w';
@ CREATE VIEW IF NOT EXISTS repository.ftscontent AS
@   SELECT rowid, type, rid, name, idxed, label, url, mtime,
@          title(type,rid,name) AS 'title', body(type,rid,name) AS 'body'
@     FROM ftsdocs;
@ CREATE VIRTUAL TABLE IF NOT EXISTS repository.ftsidx
@   USING fts5(content="ftscontent", title, body%s);
;
static const char zFtsDrop[] =
@ DROP TABLE IF EXISTS repository.ftsidx;
@ DROP VIEW IF EXISTS repository.ftscontent;
@ DROP TABLE IF EXISTS repository.ftsdocs;
@ DROP TABLE IF EXISTS repository.chatfts1;
;

#if INTERFACE
/*
** Values for the search-tokenizer config option.
*/
#define FTS5TOK_NONE      0 /* disabled */
#define FTS5TOK_PORTER    1 /* porter stemmer */
#define FTS5TOK_UNICODE61 2 /* unicode61 tokenizer */
#define FTS5TOK_TRIGRAM   3 /* trigram tokenizer */
#endif

/*
** Cached FTS5TOK_xyz value for search_tokenizer_type() and
** friends.
*/
static int iFtsTokenizer = -1;

/*
** Returns one of the FTS5TOK_xyz values, depending on the value of
** the search-tokenizer config entry, defaulting to FTS5TOK_NONE. The
** result of the first call is cached for subsequent calls unless
** bRecheck is true.
*/
int search_tokenizer_type(int bRecheck){
  char *z;
  if( iFtsTokenizer>=0 && bRecheck==0 ){
    return iFtsTokenizer;
  }
  z = db_get("search-tokenizer",0);
  if( 0==z ){
    iFtsTokenizer = FTS5TOK_NONE;
  }else if(0==fossil_strcmp(z,"porter")){
    iFtsTokenizer = FTS5TOK_PORTER;
  }else if(0==fossil_strcmp(z,"unicode61")){
    iFtsTokenizer = FTS5TOK_UNICODE61;
  }else if(0==fossil_strcmp(z,"trigram")){
    iFtsTokenizer = FTS5TOK_TRIGRAM;
  }else{
    iFtsTokenizer = is_truth(z) ? FTS5TOK_PORTER : FTS5TOK_NONE;
  }
  fossil_free(z);
  return iFtsTokenizer;
}

/*
** Returns a string in the form ",tokenize=X", where X is the string
** counterpart of the given FTS5TOK_xyz value.  Returns "" if tokType
** does not correspond to a known FTS5 tokenizer.
*/
const char * search_tokenize_arg_for_type(int tokType){
  switch( tokType ){
    case FTS5TOK_PORTER: return ",tokenize=porter";
    case FTS5TOK_UNICODE61: return ",tokenize=unicode61";
    case FTS5TOK_TRIGRAM: return ",tokenize=trigram";
    case FTS5TOK_NONE:
    default: return "";
  }
}

/*
** Returns a string value suitable for use as the search-tokenizer
** setting's value, depending on the value of z. If z is 0 then the
** current search-tokenizer value is used as the basis for formulating
** the result (which may differ from the current value but will have
** the same meaning). Any unknown/unsupported value is interpreted as
** "off".
*/
const char *search_tokenizer_for_string(const char *z){
  char * zTmp = 0;
  const char *zRc = 0;

  if( 0==z ){
    z = zTmp = db_get("search-tokenizer",0);
  }
  if( 0==z ){
    zRc = "off";
  }else if( 0==fossil_strcmp(z,"porter") ){
    zRc = "porter";
  }else if( 0==fossil_strcmp(z,"unicode61") ){
    zRc = "unicode61";
  }else if( 0==fossil_strcmp(z,"trigram") ){
    zRc = "trigram";
  }else{
    zRc = is_truth(z) ? "porter" : "off";
  }
  fossil_free(zTmp);
  return zRc;
}

/*
** Sets the search-tokenizer config setting to the value of
** search_tokenizer_for_string(zName).
*/
void search_set_tokenizer(const char *zName){
  db_set("search-tokenizer", search_tokenizer_for_string( zName ), 0);
  iFtsTokenizer = -1;
}

/*
** Create or drop the tables associated with a full-text index.
*/
static int searchIdxExists = -1;
void search_create_index(void){
  const char *zExtra =
    search_tokenize_arg_for_type(search_tokenizer_type(0));
  assert( zExtra );
  search_sql_setup(g.db);
  db_multi_exec(zFtsSchema/*works-like:"%s"*/, zExtra/*safe-for-%s*/);
  searchIdxExists = 1;
}
void search_drop_index(void){
  db_multi_exec(zFtsDrop/*works-like:""*/);
  searchIdxExists = 0;
}

/*
** Return true if the full-text search index exists.  See also the
** search_index_type() function.
*/
int search_index_exists(void){
  if( searchIdxExists<0 ){
    searchIdxExists = db_table_exists("repository","ftsdocs");
  }
  return searchIdxExists;
}

/*
** Determine which full-text search index is currently being used to
** add searching.  Return values:
**
**     0          No search index is available
**     4          FTS3/4
**     5          FTS5
**
** Results are cached.  Make the argument 1 to reset the cache.  See
** also the search_index_exists() routine.
*/
int search_index_type(int bReset){
  static int idxType = -1;
  if( idxType<0 || bReset ){
    idxType = db_int(0,
        "SELECT CASE WHEN sql GLOB '*fts4*' THEN 4 ELSE 5 END"
        " FROM repository.sqlite_schema WHERE name='ftsidx'"
    );
  }
  return idxType;
}

/*
** Fill the FTSDOCS table with unindexed entries for everything
** in the repository.  This uses INSERT OR IGNORE so entries already
** in FTSDOCS are unchanged.
*/
void search_fill_index(void){
  if( !search_index_exists() ) return;
  search_sql_setup(g.db);
  db_multi_exec(
    "INSERT OR IGNORE INTO ftsdocs(type,rid,idxed)"
    "  SELECT 'c', objid, 0 FROM event WHERE type='ci';"
  );
  db_multi_exec(
    "WITH latest_wiki(rid,name,mtime) AS ("
    "  SELECT tagxref.rid, substr(tag.tagname,6), max(tagxref.mtime)"
    "    FROM tag, tagxref"
    "   WHERE tag.tagname GLOB 'wiki-*'"
    "     AND tagxref.tagid=tag.tagid"
    "     AND tagxref.value>0"
    "   GROUP BY 2"
    ") INSERT OR IGNORE INTO ftsdocs(type,rid,name,idxed)"
    "     SELECT 'w', rid, name, 0 FROM latest_wiki;"
  );
  db_multi_exec(
    "INSERT OR IGNORE INTO ftsdocs(type,rid,idxed)"
    "  SELECT 't', tkt_id, 0 FROM ticket;"
  );
  db_multi_exec(
    "INSERT OR IGNORE INTO ftsdocs(type,rid,name,idxed)"
    "  SELECT type, objid, comment, 0 FROM event WHERE type IN ('e','f');"
  );
}

/*
** The document described by cType,rid,zName is about to be added or
** updated.  If the document has already been indexed, then unindex it
** now while we still have access to the old content.  Add the document
** to the queue of documents that need to be indexed or reindexed.
*/
void search_doc_touch(char cType, int rid, const char *zName){
  if( search_index_exists() && !content_is_private(rid) ){
    char zType[2];
    zType[0] = cType;
    zType[1] = 0;
    search_sql_setup(g.db);
    db_multi_exec(
       "DELETE FROM ftsidx WHERE rowid IN"
       "    (SELECT rowid FROM ftsdocs WHERE type=%Q AND rid=%d AND idxed)",
       zType, rid
    );
    db_multi_exec(
       "REPLACE INTO ftsdocs(type,rid,name,idxed)"
       " VALUES(%Q,%d,%Q,0)",
       zType, rid, zName
    );
    if( cType=='w' || cType=='e' ){
      db_multi_exec(
        "DELETE FROM ftsidx WHERE rowid IN"
        "    (SELECT rowid FROM ftsdocs WHERE type='%c' AND name=%Q AND idxed)",
        cType, zName
      );
      db_multi_exec(
        "DELETE FROM ftsdocs WHERE type='%c' AND name=%Q AND rid!=%d",
        cType, zName, rid
      );
    }
    /* All forum posts are always indexed */
  }
}

/*
** If the doc-glob and doc-br settings are valid for document search
** and if the latest check-in on doc-br is in the unindexed set of
** check-ins, then update all 'd' entries in FTSDOCS that have
** changed.
*/
static void search_update_doc_index(void){
  const char *zDocBranches = db_get("doc-branch","trunk");
  int i;
  Glob * pGlob = glob_create(zDocBranches)
    /* We're misusing a Glob as a list of comma-/space-delimited
    ** tokens. We're not actually doing glob matches here. */;
  if( !pGlob ) return;
  db_multi_exec(
    "CREATE TEMP TABLE current_docs(rid INTEGER PRIMARY KEY, name);"
    "CREATE VIRTUAL TABLE IF NOT EXISTS temp.foci USING files_of_checkin;"
  );
  for( i = 0; i < pGlob->nPattern; ++i ){
    const char *zDocBr = pGlob->azPattern[i];
    int ckid = symbolic_name_to_rid(zDocBr,"ci");
    double rTime;
    if( !db_exists("SELECT 1 FROM ftsdocs WHERE type='c' AND rid=%d"
                   "   AND NOT idxed", ckid) ) continue;
    /* If we get this far, it means that changes to 'd' entries are
    ** required. */
    rTime = db_double(0.0, "SELECT mtime FROM event WHERE objid=%d", ckid);
    db_multi_exec(
      "INSERT OR IGNORE INTO current_docs(rid, name)"
      "  SELECT blob.rid, foci.filename FROM foci, blob"
      "   WHERE foci.checkinID=%d AND blob.uuid=foci.uuid"
      "     AND %z",
      ckid, glob_expr("foci.filename", db_get("doc-glob",""))
    );
    db_multi_exec(
      "DELETE FROM ftsidx WHERE rowid IN"
      "  (SELECT rowid FROM ftsdocs WHERE type='d'"
      "      AND rid NOT IN (SELECT rid FROM current_docs))"
    );
    db_multi_exec(
      "DELETE FROM ftsdocs WHERE type='d'"
      "      AND rid NOT IN (SELECT rid FROM current_docs)"
    );
    db_multi_exec(
      "INSERT OR IGNORE INTO ftsdocs(type,rid,name,idxed,label,bx,url,mtime)"
      "  SELECT 'd', rid, name, 0,"
      "         title('d',rid,name),"
      "         body('d',rid,name),"
      "         printf('/doc/%T/%%s',urlencode(name)),"
      "         %.17g"
      " FROM current_docs",
      zDocBr, rTime
    );
    db_multi_exec(
      "INSERT INTO ftsidx(rowid,title,body)"
      "  SELECT rowid, label, bx FROM ftsdocs WHERE type='d' AND NOT idxed"
    );
    db_multi_exec(
      "UPDATE ftsdocs SET"
      "  idxed=1,"
      "  bx=NULL,"
      "  label='Document: '||label"
      " WHERE type='d' AND NOT idxed"
    );
  }
  glob_free(pGlob);
}

/*
** Deal with all of the unindexed 'c' terms in FTSDOCS
*/
static void search_update_checkin_index(void){
  db_multi_exec(
    "INSERT INTO ftsidx(rowid,title,body)"
    " SELECT rowid, '', body('c',rid,NULL) FROM ftsdocs"
    "  WHERE type='c' AND NOT idxed;"
  );
  db_multi_exec(
    "UPDATE ftsdocs SET idxed=1, name=NULL,"
    " (label,url,mtime) = "
    "  (SELECT printf('Check-in [%%.16s] on %%s',blob.uuid,"
    "                 datetime(event.mtime)),"
    "          printf('/timeline?y=ci&c=%%.20s',blob.uuid),"
    "          event.mtime"
    "     FROM event, blob"
    "    WHERE event.objid=ftsdocs.rid"
    "      AND blob.rid=ftsdocs.rid)"
    "WHERE ftsdocs.type='c' AND NOT ftsdocs.idxed"
  );
}

/*
** Deal with all of the unindexed 't' terms in FTSDOCS
*/
static void search_update_ticket_index(void){
  db_multi_exec(
    "INSERT INTO ftsidx(rowid,title,body)"
    " SELECT rowid, title('t',rid,NULL), body('t',rid,NULL) FROM ftsdocs"
    "  WHERE type='t' AND NOT idxed;"
  );
  if( db_changes()==0 ) return;
  db_multi_exec(
    "UPDATE ftsdocs SET idxed=1, name=NULL,"
    "  (label,url,mtime) ="
    "  (SELECT printf('Ticket: %%s (%%s)',title('t',tkt_id,null),"
    "                 datetime(tkt_mtime)),"
    "          printf('/tktview/%%.20s',tkt_uuid),"
    "          tkt_mtime"
    "     FROM ticket"
    "    WHERE tkt_id=ftsdocs.rid)"
    "WHERE ftsdocs.type='t' AND NOT ftsdocs.idxed"
  );
}

/*
** Deal with all of the unindexed 'w' terms in FTSDOCS
*/
static void search_update_wiki_index(void){
  db_multi_exec(
    "INSERT INTO ftsidx(rowid,title,body)"
    " SELECT rowid, title('w',rid,NULL),body('w',rid,NULL) FROM ftsdocs"
    "  WHERE type='w' AND NOT idxed;"
  );
  if( db_changes()==0 ) return;
  db_multi_exec(
    "UPDATE ftsdocs SET idxed=1,"
    "  (name,label,url,mtime) = "
    "    (SELECT ftsdocs.name,"
    "            'Wiki: '||ftsdocs.name,"
    "            '/wiki?name='||urlencode(ftsdocs.name),"
    "            tagxref.mtime"
    "       FROM tagxref WHERE tagxref.rid=ftsdocs.rid)"
    " WHERE ftsdocs.type='w' AND NOT ftsdocs.idxed"
  );
}

/*
** Deal with all of the unindexed 'f' terms in FTSDOCS
*/
static void search_update_forum_index(void){
  db_multi_exec(
    "INSERT INTO ftsidx(rowid,title,body)"
    " SELECT rowid, title('f',rid,NULL),body('f',rid,NULL) FROM ftsdocs"
    "  WHERE type='f' AND NOT idxed;"
  );
  if( db_changes()==0 ) return;
  db_multi_exec(
    "UPDATE ftsdocs SET idxed=1, name=NULL,"
    " (label,url,mtime) = "
    "  (SELECT 'Forum '||event.comment,"
    "          '/forumpost/'||blob.uuid,"
    "          event.mtime"
    "     FROM event, blob"
    "    WHERE event.objid=ftsdocs.rid"
    "      AND blob.rid=ftsdocs.rid)"
    "WHERE ftsdocs.type='f' AND NOT ftsdocs.idxed"
  );
}

/*
** Deal with all of the unindexed 'e' terms in FTSDOCS
*/
static void search_update_technote_index(void){
  db_multi_exec(
    "INSERT INTO ftsidx(rowid,title,body)"
    " SELECT rowid, title('e',rid,NULL),body('e',rid,NULL) FROM ftsdocs"
    "  WHERE type='e' AND NOT idxed;"
  );
  if( db_changes()==0 ) return;
  db_multi_exec(
    "UPDATE ftsdocs SET idxed=1,"
    "  (name,label,url,mtime) = "
    "    (SELECT ftsdocs.name,"
    "            'Tech Note: '||ftsdocs.name,"
    "            '/technote/'||substr(tag.tagname,7),"
    "            tagxref.mtime"
    "       FROM tagxref, tag USING (tagid)"
    "      WHERE tagxref.rid=ftsdocs.rid"
    "        AND tagname GLOB 'event-*')"
    " WHERE ftsdocs.type='e' AND NOT ftsdocs.idxed"
  );
}
     "CREATE TEMP TABLE srch(rid,uuid,date,comment,x);"
     "CREATE INDEX srch_idx1 ON srch(x);"
     "INSERT INTO srch(rid,uuid,date,comment,x)"
     "   SELECT blob.rid, uuid, datetime(event.mtime, 'localtime'),"
     "          coalesce(ecomment,comment),"
     "          score(coalesce(ecomment,comment)) AS y"
     "     FROM event, blob"
     "    WHERE blob.rid=event.objid AND y>0;"
  );
  iBest = db_int(0, "SELECT max(x) FROM srch");
  db_prepare(&q, 
    "SELECT rid, uuid, date, comment, 0, 0 FROM srch"
    " WHERE x>%d ORDER BY x DESC, date DESC",
    iBest/3
  );
  print_timeline(&q, 1000);
  db_finalize(&q);

/*
** Deal with all of the unindexed entries in the FTSDOCS table - that
** is to say, all the entries with FTSDOCS.IDXED=0.  Add them to the
** index.
*/
void search_update_index(unsigned int srchFlags){
  if( !search_index_exists() ) return;
  if( !db_exists("SELECT 1 FROM ftsdocs WHERE NOT idxed") ) return;
  search_sql_setup(g.db);
  db_unprotect(PROTECT_READONLY);
  if( srchFlags & (SRCH_CKIN|SRCH_DOC) ){
    search_update_doc_index();
    search_update_checkin_index();
  }
  if( srchFlags & SRCH_TKT ){
    search_update_ticket_index();
  }
  if( srchFlags & SRCH_WIKI ){
    search_update_wiki_index();
  }
  if( srchFlags & SRCH_TECHNOTE ){
    search_update_technote_index();
  }
  if( srchFlags & SRCH_FORUM ){
    search_update_forum_index();
  }
  db_protect_pop();
}

/*
** Construct, prepopulate, and then update the full-text index.
*/
void search_rebuild_index(void){
  fossil_print("rebuilding the search index...");
  fflush(stdout);
  search_create_index();
  search_fill_index();
  search_update_index(search_restrict(SRCH_ALL));
  if( db_table_exists("repository","chat") ){
    chat_rebuild_index(1);
  }
  fossil_print(" done\n");
}

/*
** COMMAND: fts-config*
**
** Usage: fossil fts-config ?SUBCOMMAND? ?ARGUMENT?
**
** The "fossil fts-config" command configures the full-text search capabilities
** of the repository.  Subcommands:
**
**     reindex            Rebuild the search index.  This is a no-op if
**                        index search is disabled
**
**     index (on|off)     Turn the search index on or off
**
**     enable cdtwef      Enable various kinds of search. c=Check-ins,
**                        d=Documents, t=Tickets, w=Wiki, e=Tech Notes,
**                        f=Forum.
**
**     disable cdtwef     Disable various kinds of search
**
**     tokenizer VALUE    Select a tokenizer for indexed search. VALUE
**                        may be one of (porter, on, off, trigram, unicode61),
**                        and "on" is equivalent to "porter". Unindexed
**                        search never uses tokenization or stemming.
**
** The current search settings are displayed after any changes are applied.
** Run this command with no arguments to simply see the settings.
*/
void fts_config_cmd(void){
  static const struct {
    int iCmd;
    const char *z;
  } aCmd[] = {
     { 1,  "reindex"  },
     { 2,  "index"    },
     { 3,  "disable"  },
     { 4,  "enable"   },
     { 5,  "tokenizer"},
  };
  static const struct {
    const char *zSetting;
    const char *zName;
    const char *zSw;
  } aSetng[] = {
     { "search-ci",       "check-in search:",  "c" },
     { "search-doc",      "document search:",  "d" },
     { "search-tkt",      "ticket search:",    "t" },
     { "search-wiki",     "wiki search:",      "w" },
     { "search-technote", "tech note search:", "e" },
     { "search-forum",    "forum search:",     "f" },
  };
  char *zSubCmd = 0;
  int i, j, n;
  int iCmd = 0;
  int iAction = 0;
  db_find_and_open_repository(0, 0);
  if( g.argc>2 ){
    zSubCmd = g.argv[2];
    n = (int)strlen(zSubCmd);
    for(i=0; i<count(aCmd); i++){
      if( fossil_strncmp(aCmd[i].z, zSubCmd, n)==0 ) break;
    }
    if( i>=count(aCmd) ){
      Blob all;
      blob_init(&all,0,0);
      for(i=0; i<count(aCmd); i++) blob_appendf(&all, " %s", aCmd[i].z);
      fossil_fatal("unknown \"%s\" - should be one of:%s",
                   zSubCmd, blob_str(&all));
      return;
    }
    iCmd = aCmd[i].iCmd;
  }
  g.perm.Read = 1;
  g.perm.RdTkt = 1;
  g.perm.RdWiki = 1;
  if( iCmd==1 ){
    if( search_index_exists() ) iAction = 2;
  }
  if( iCmd==2 ){
    if( g.argc<3 ) usage("index (on|off)");
    iAction = 1 + is_truth(g.argv[3]);
  }
  db_begin_transaction();

  /* Adjust search settings */
  if( iCmd==3 || iCmd==4 ){
    const char *zCtrl;
    if( g.argc<4 ) usage(mprintf("%s STRING",zSubCmd));
    zCtrl = g.argv[3];
    for(j=0; j<count(aSetng); j++){
      if( strchr(zCtrl, aSetng[j].zSw[0])!=0 ){
        db_set_int(aSetng[j].zSetting/*works-like:"x"*/, iCmd-3, 0);
      }
    }
  }else if( iCmd==5 ){
    int iOldTokenizer, iNewTokenizer;
    if( g.argc<4 ) usage("tokenizer porter|on|off|trigram|unicode61");
    iOldTokenizer = search_tokenizer_type(0);
    db_set("search-tokenizer",
           search_tokenizer_for_string(g.argv[3]), 0);
    iNewTokenizer = search_tokenizer_type(1);
    if( iOldTokenizer!=iNewTokenizer ){
      /* Drop or rebuild index if tokenizer changes. */
      iAction = 1 + ((iOldTokenizer && iNewTokenizer)
                     ? 1 : (iNewTokenizer ? 1 : 0));
    }
  }

  /* destroy or rebuild the index, if requested */
  if( iAction>=1 ){
    search_drop_index();
  }
  if( iAction>=2 ){
    search_rebuild_index();
  }

  /* Always show the status before ending */
  for(i=0; i<count(aSetng); i++){
    fossil_print("%-17s %s\n", aSetng[i].zName,
       db_get_boolean(aSetng[i].zSetting,0) ? "on" : "off");
  }
  fossil_print("%-17s %s\n", "tokenizer:",
       search_tokenizer_for_string(0));
  if( search_index_exists() ){
    int pgsz = db_int64(0, "PRAGMA repository.page_size;");
    i64 nTotal = db_int64(0, "PRAGMA repository.page_count;")*pgsz;
    i64 nFts = db_int64(0, "SELECT count(*) FROM dbstat"
                               " WHERE schema='repository'"
                               " AND name LIKE 'fts%%'")*pgsz;
    char zSize[50];
    fossil_print("%-17s FTS%d\n", "full-text index:", search_index_type(1));
    fossil_print("%-17s %d\n", "documents:",
       db_int(0, "SELECT count(*) FROM ftsdocs"));
    approxSizeName(sizeof(zSize), zSize, nFts);
    fossil_print("%-17s %s (%.1f%% of repository)\n", "space used",
       zSize, 100.0*((double)nFts/(double)nTotal));
  }else{
    fossil_print("%-17s disabled\n", "full-text index:");
  }
  db_end_transaction(0);
}

/*
** WEBPAGE: test-ftsdocs
**
** Show a table of all documents currently in the search index.
*/
void search_data_page(void){
  Stmt q;
  const char *zId = P("id");
  const char *zType = P("y");
  const char *zIdxed = P("ixed");
  int id;
  int cnt1 = 0, cnt2 = 0, cnt3 = 0;
  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }
  style_set_current_feature("test");
  if( !search_index_exists() ){
    @ <p>Indexed search is disabled
    style_finish_page();
    return;
  }
  search_sql_setup(g.db);
  style_submenu_element("Setup","%R/srchsetup");
  if( zId!=0 && (id = atoi(zId))>0 ){
    /* Show information about a single ftsdocs entry */
    style_header("Information about ftsdoc entry %d", id);
    style_submenu_element("Summary","%R/test-ftsdocs");
    db_prepare(&q,
      "SELECT type||rid, name, idxed, label, url, datetime(mtime)"
      "  FROM ftsdocs WHERE rowid=%d", id
    );
    if( db_step(&q)==SQLITE_ROW ){
      const char *zUrl = db_column_text(&q,4);
      const char *zDocId = db_column_text(&q,0);
      char *zName;
      char *z;
      @ <table border=0>
      @ <tr><td align='right'>rowid:<td>&nbsp;&nbsp;<td>%d(id)
      @ <tr><td align='right'>id:<td><td>%s(zDocId)
      @ <tr><td align='right'>name:<td><td>%h(db_column_text(&q,1))
      @ <tr><td align='right'>idxed:<td><td>%d(db_column_int(&q,2))
      @ <tr><td align='right'>label:<td><td>%h(db_column_text(&q,3))
      @ <tr><td align='right'>url:<td><td>
      @ <a href='%R%s(zUrl)'>%h(zUrl)</a>
      @ <tr><td align='right'>mtime:<td><td>%s(db_column_text(&q,5))
      z = db_text(0, "SELECT title FROM ftsidx WHERE rowid=%d",id);
      if( z && z[0] ){
        @ <tr><td align="right">title:<td><td>%h(z)
        fossil_free(z);
      }
      z = db_text(0, "SELECT body FROM ftsidx WHERE rowid=%d",id);
      if( z && z[0] ){
        @ <tr><td align="right" valign="top">body:<td><td>%h(z)
        fossil_free(z);
      }
      @ </table>
      zName = mprintf("Indexed '%c' docs",zDocId[0]);
      style_submenu_element(zName,"%R/test-ftsdocs?y=%c&ixed=1",zDocId[0]);
      zName = mprintf("Unindexed '%c' docs",zDocId[0]);
      style_submenu_element(zName,"%R/test-ftsdocs?y=%c&ixed=0",zDocId[0]);
    }
    db_finalize(&q);
    style_finish_page();
    return;
  }
  if( zType!=0 && zType[0]!=0 && zType[1]==0 &&
      zIdxed!=0 && (zIdxed[0]=='1' || zIdxed[0]=='0') && zIdxed[1]==0
  ){
    int ixed = zIdxed[0]=='1';
    char *zName;
    style_header("List of '%c' documents that are%s indexed",
                 zType[0], ixed ? "" : " not");
    style_submenu_element("Summary","%R/test-ftsdocs");
    if( ixed==0 ){
      zName = mprintf("Indexed '%c' docs",zType[0]);
      style_submenu_element(zName,"%R/test-ftsdocs?y=%c&ixed=1",zType[0]);
    }else{
      zName = mprintf("Unindexed '%c' docs",zType[0]);
      style_submenu_element(zName,"%R/test-ftsdocs?y=%c&ixed=0",zType[0]);
    }
    db_prepare(&q,
      "SELECT rowid, type||rid ||' '|| coalesce(label,'')"
      "  FROM ftsdocs WHERE type='%c' AND %s idxed",
      zType[0], ixed ? "" : "NOT"
    );
    @ <ul>
    while( db_step(&q)==SQLITE_ROW ){
      @ <li> <a href='test-ftsdocs?id=%d(db_column_int(&q,0))'>
      @ %h(db_column_text(&q,1))</a>
    }
    @ </ul>
    db_finalize(&q);
    style_finish_page();
    return;
  }
  style_header("Summary of ftsdocs");
  db_prepare(&q,
     "SELECT type, sum(idxed IS TRUE), sum(idxed IS FALSE), count(*)"
     "  FROM ftsdocs"
     " GROUP BY 1 ORDER BY 4 DESC"
  );
  @ <table border=1 cellpadding=3 cellspacing=0>
  @ <thead>
  @ <tr><th>Type<th>Indexed<th>Unindexed<th>Total
  @ </thead>
  @ <tbody>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zType = db_column_text(&q,0);
    int nIndexed = db_column_int(&q, 1);
    int nUnindexed = db_column_int(&q, 2);
    int nTotal = db_column_int(&q, 3);
    @ <tr><td>%h(zType)
    if( nIndexed>0 ){
      @ <td align="right"><a href='%R/test-ftsdocs?y=%s(zType)&ixed=1'>\
      @ %d(nIndexed)</a>
    }else{
      @ <td align="right">0
    }
    if( nUnindexed>0 ){
      @ <td align="right"><a href='%R/test-ftsdocs?y=%s(zType)&ixed=0'>\
      @ %d(nUnindexed)</a>
    }else{
      @ <td align="right">0
    }
    @ <td align="right">%d(nTotal)
    @ </tr>
    cnt1 += nIndexed;
    cnt2 += nUnindexed;
    cnt3 += nTotal;
  }
  db_finalize(&q);
  @ </tbody><tfooter>
  @ <tr><th>Total<th align="right">%d(cnt1)<th align="right">%d(cnt2)
  @ <th align="right">%d(cnt3)
  @ </tfooter>
  @ </table>
  style_finish_page();
}


/*
** The Fts5MatchinfoCtx bits were all taken verbatim from:
**
** https://sqlite.org/src/finfo?name=ext/fts5/fts5_test_mi.c
*/

typedef struct Fts5MatchinfoCtx Fts5MatchinfoCtx;

#if INTERFACE
#ifndef SQLITE_AMALGAMATION
typedef unsigned int u32;
#endif
#endif

struct Fts5MatchinfoCtx {
  int nCol;                       /* Number of cols in FTS5 table */
  int nPhrase;                    /* Number of phrases in FTS5 query */
  char *zArg;                     /* nul-term'd copy of 2nd arg */
  int nRet;                       /* Number of elements in aRet[] */
  u32 *aRet;                      /* Array of 32-bit unsigned ints to return */
};


/*
** Return a pointer to the fts5_api pointer for database connection db.
** If an error occurs, return NULL and leave an error in the database
** handle (accessible using sqlite3_errcode()/errmsg()).
*/
static int fts5_api_from_db(sqlite3 *db, fts5_api **ppApi){
  sqlite3_stmt *pStmt = 0;
  int rc;

  *ppApi = 0;
  rc = sqlite3_prepare(db, "SELECT fts5(?1)", -1, &pStmt, 0);
  if( rc==SQLITE_OK ){
    sqlite3_bind_pointer(pStmt, 1, (void*)ppApi, "fts5_api_ptr", 0);
    (void)sqlite3_step(pStmt);
    rc = sqlite3_finalize(pStmt);
  }

  return rc;
}


/*
** Argument f should be a flag accepted by matchinfo() (a valid character
** in the string passed as the second argument). If it is not, -1 is
** returned. Otherwise, if f is a valid matchinfo flag, the value returned
** is the number of 32-bit integers added to the output array if the
** table has nCol columns and the query nPhrase phrases.
*/
static int fts5MatchinfoFlagsize(int nCol, int nPhrase, char f){
  int ret = -1;
  switch( f ){
    case 'p': ret = 1; break;
    case 'c': ret = 1; break;
    case 'x': ret = 3 * nCol * nPhrase; break;
    case 'y': ret = nCol * nPhrase; break;
    case 'b': ret = ((nCol + 31) / 32) * nPhrase; break;
    case 'n': ret = 1; break;
    case 'a': ret = nCol; break;
    case 'l': ret = nCol; break;
    case 's': ret = nCol; break;
  }
  return ret;
}

static int fts5MatchinfoIter(
  const Fts5ExtensionApi *pApi,   /* API offered by current FTS version */
  Fts5Context *pFts,              /* First arg to pass to pApi functions */
  Fts5MatchinfoCtx *p,
  int(*x)(const Fts5ExtensionApi*,Fts5Context*,Fts5MatchinfoCtx*,char,u32*)
){
  int i;
  int n = 0;
  int rc = SQLITE_OK;
  char f;
  for(i=0; (f = p->zArg[i]); i++){
    rc = x(pApi, pFts, p, f, &p->aRet[n]);
    if( rc!=SQLITE_OK ) break;
    n += fts5MatchinfoFlagsize(p->nCol, p->nPhrase, f);
  }
  return rc;
}

static int fts5MatchinfoXCb(
  const Fts5ExtensionApi *pApi,
  Fts5Context *pFts,
  void *pUserData
){
  Fts5PhraseIter iter;
  int iCol, iOff;
  u32 *aOut = (u32*)pUserData;
  int iPrev = -1;

  for(pApi->xPhraseFirst(pFts, 0, &iter, &iCol, &iOff);
      iCol>=0;
      pApi->xPhraseNext(pFts, &iter, &iCol, &iOff)
  ){
    aOut[iCol*3+1]++;
    if( iCol!=iPrev ) aOut[iCol*3 + 2]++;
    iPrev = iCol;
  }

  return SQLITE_OK;
}

static int fts5MatchinfoGlobalCb(
  const Fts5ExtensionApi *pApi,
  Fts5Context *pFts,
  Fts5MatchinfoCtx *p,
  char f,
  u32 *aOut
){
  int rc = SQLITE_OK;
  switch( f ){
    case 'p':
      aOut[0] = p->nPhrase;
      break;

    case 'c':
      aOut[0] = p->nCol;
      break;

    case 'x': {
      int i;
      for(i=0; i<p->nPhrase && rc==SQLITE_OK; i++){
        void *pPtr = (void*)&aOut[i * p->nCol * 3];
        rc = pApi->xQueryPhrase(pFts, i, pPtr, fts5MatchinfoXCb);
      }
      break;
    }

    case 'n': {
      sqlite3_int64 nRow;
      rc = pApi->xRowCount(pFts, &nRow);
      aOut[0] = (u32)nRow;
      break;
    }

    case 'a': {
      sqlite3_int64 nRow = 0;
      rc = pApi->xRowCount(pFts, &nRow);
      if( nRow==0 ){
        memset(aOut, 0, sizeof(u32) * p->nCol);
      }else{
        int i;
        for(i=0; rc==SQLITE_OK && i<p->nCol; i++){
          sqlite3_int64 nToken;
          rc = pApi->xColumnTotalSize(pFts, i, &nToken);
          if( rc==SQLITE_OK){
            aOut[i] = (u32)((2*nToken + nRow) / (2*nRow));
          }
        }
      }
      break;
    }

  }
  return rc;
}

static int fts5MatchinfoLocalCb(
  const Fts5ExtensionApi *pApi,
  Fts5Context *pFts,
  Fts5MatchinfoCtx *p,
  char f,
  u32 *aOut
){
  int i;
  int rc = SQLITE_OK;

  switch( f ){
    case 'b': {
      int iPhrase;
      int nInt = ((p->nCol + 31) / 32) * p->nPhrase;
      for(i=0; i<nInt; i++) aOut[i] = 0;

      for(iPhrase=0; iPhrase<p->nPhrase; iPhrase++){
        Fts5PhraseIter iter;
        int iCol;
        for(pApi->xPhraseFirstColumn(pFts, iPhrase, &iter, &iCol);
            iCol>=0;
            pApi->xPhraseNextColumn(pFts, &iter, &iCol)
        ){
          aOut[iPhrase * ((p->nCol+31)/32) + iCol/32] |= ((u32)1 << iCol%32);
        }
      }

      break;
    }

    case 'x':
    case 'y': {
      int nMul = (f=='x' ? 3 : 1);
      int iPhrase;

      for(i=0; i<(p->nCol*p->nPhrase); i++) aOut[i*nMul] = 0;

      for(iPhrase=0; iPhrase<p->nPhrase; iPhrase++){
        Fts5PhraseIter iter;
        int iOff, iCol;
        for(pApi->xPhraseFirst(pFts, iPhrase, &iter, &iCol, &iOff);
            iOff>=0;
            pApi->xPhraseNext(pFts, &iter, &iCol, &iOff)
        ){
          aOut[nMul * (iCol + iPhrase * p->nCol)]++;
        }
      }

      break;
    }

    case 'l': {
      for(i=0; rc==SQLITE_OK && i<p->nCol; i++){
        int nToken;
        rc = pApi->xColumnSize(pFts, i, &nToken);
        aOut[i] = (u32)nToken;
      }
      break;
    }

    case 's': {
      int nInst;

      memset(aOut, 0, sizeof(u32) * p->nCol);

      rc = pApi->xInstCount(pFts, &nInst);
      for(i=0; rc==SQLITE_OK && i<nInst; i++){
        int iPhrase, iOff, iCol = 0;
        int iNextPhrase;
        int iNextOff;
        u32 nSeq = 1;
        int j;

        rc = pApi->xInst(pFts, i, &iPhrase, &iCol, &iOff);
        iNextPhrase = iPhrase+1;
        iNextOff = iOff+pApi->xPhraseSize(pFts, 0);
        for(j=i+1; rc==SQLITE_OK && j<nInst; j++){
          int ip, ic, io;
          rc = pApi->xInst(pFts, j, &ip, &ic, &io);
          if( ic!=iCol || io>iNextOff ) break;
          if( ip==iNextPhrase && io==iNextOff ){
            nSeq++;
            iNextPhrase = ip+1;
            iNextOff = io + pApi->xPhraseSize(pFts, ip);
          }
        }

        if( nSeq>aOut[iCol] ) aOut[iCol] = nSeq;
      }

      break;
    }
  }
  return rc;
}

static Fts5MatchinfoCtx *fts5MatchinfoNew(
  const Fts5ExtensionApi *pApi,   /* API offered by current FTS version */
  Fts5Context *pFts,              /* First arg to pass to pApi functions */
  sqlite3_context *pCtx,          /* Context for returning error message */
  const char *zArg                /* Matchinfo flag string */
){
  Fts5MatchinfoCtx *p;
  int nCol;
  int nPhrase;
  int i;
  int nInt;
  sqlite3_int64 nByte;
  int rc;

  nCol = pApi->xColumnCount(pFts);
  nPhrase = pApi->xPhraseCount(pFts);

  nInt = 0;
  for(i=0; zArg[i]; i++){
    int n = fts5MatchinfoFlagsize(nCol, nPhrase, zArg[i]);
    if( n<0 ){
      char *zErr = sqlite3_mprintf("unrecognized matchinfo flag: %c", zArg[i]);
      sqlite3_result_error(pCtx, zErr, -1);
      sqlite3_free(zErr);
      return 0;
    }
    nInt += n;
  }

  nByte = sizeof(Fts5MatchinfoCtx)          /* The struct itself */
         + sizeof(u32) * nInt               /* The p->aRet[] array */
         + (i+1);                           /* The p->zArg string */
  p = (Fts5MatchinfoCtx*)sqlite3_malloc64(nByte);
  if( p==0 ){
    sqlite3_result_error_nomem(pCtx);
    return 0;
  }
  memset(p, 0, nByte);

  p->nCol = nCol;
  p->nPhrase = nPhrase;
  p->aRet = (u32*)&p[1];
  p->nRet = nInt;
  p->zArg = (char*)&p->aRet[nInt];
  memcpy(p->zArg, zArg, i);

  rc = fts5MatchinfoIter(pApi, pFts, p, fts5MatchinfoGlobalCb);
  if( rc!=SQLITE_OK ){
    sqlite3_result_error_code(pCtx, rc);
    sqlite3_free(p);
    p = 0;
  }

  return p;
}

static void fts5MatchinfoFunc(
  const Fts5ExtensionApi *pApi,   /* API offered by current FTS version */
  Fts5Context *pFts,              /* First arg to pass to pApi functions */
  sqlite3_context *pCtx,          /* Context for returning result/error */
  int nVal,                       /* Number of values in apVal[] array */
  sqlite3_value **apVal           /* Array of trailing arguments */
){
  const char *zArg;
  Fts5MatchinfoCtx *p;
  int rc = SQLITE_OK;

  if( nVal>0 ){
    zArg = (const char*)sqlite3_value_text(apVal[0]);
  }else{
    zArg = "pcx";
  }

  p = (Fts5MatchinfoCtx*)pApi->xGetAuxdata(pFts, 0);
  if( p==0 || sqlite3_stricmp(zArg, p->zArg) ){
    p = fts5MatchinfoNew(pApi, pFts, pCtx, zArg);
    if( p==0 ){
      rc = SQLITE_NOMEM;
    }else{
      rc = pApi->xSetAuxdata(pFts, p, sqlite3_free);
    }
  }

  if( rc==SQLITE_OK ){
    rc = fts5MatchinfoIter(pApi, pFts, p, fts5MatchinfoLocalCb);
  }
  if( rc!=SQLITE_OK ){
    sqlite3_result_error_code(pCtx, rc);
  }else{
    /* No errors has occured, so return a copy of the array of integers. */
    int nByte = p->nRet * sizeof(u32);
    sqlite3_result_blob(pCtx, (void*)p->aRet, nByte, SQLITE_TRANSIENT);
  }
}

int db_register_fts5(sqlite3 *db){
  int rc;                         /* Return code */
  fts5_api *pApi;                 /* FTS5 API functions */

  /* Extract the FTS5 API pointer from the database handle. The
  ** fts5_api_from_db() function above is copied verbatim from the
  ** FTS5 documentation. Refer there for details. */
  rc = fts5_api_from_db(db, &pApi);
  if( rc!=SQLITE_OK ) return rc;

  /* If fts5_api_from_db() returns NULL, then either FTS5 is not registered
  ** with this database handle, or an error (OOM perhaps?) has occurred.
  **
  ** Also check that the fts5_api object is version 2 or newer.
  */
  if( pApi==0 || pApi->iVersion<2 ){
    return SQLITE_ERROR;
  }

  /* Register the implementation of matchinfo() */
  rc = pApi->xCreateFunction(pApi, "matchinfo", 0, fts5MatchinfoFunc, 0);

  return rc;
}
Added src/security_audit.c.































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2017 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file implements various web pages use for running a security audit
** of a Fossil configuration.
*/
#include "config.h"
#include <assert.h>
#include "security_audit.h"

/*
** Return TRUE if any of the capability letters in zTest are found
** in the capability string zCap.
*/
static int hasAnyCap(const char *zCap, const char *zTest){
  while( zTest[0] ){
    if( strchr(zCap, zTest[0]) ) return 1;
    zTest++;
  }
  return 0;
}

/*
** Parse the content-security-policy
** into separate fields, and return a pointer to a null-terminated
** array of pointers to strings, one entry for each field.  Or return
** a NULL pointer if no CSP could be located in the header.
**
** Memory to hold the returned array and of the strings is obtained from
** a single memory allocation, which the caller should free to avoid a
** memory leak.
*/
static char **parse_content_security_policy(void){
  char **azCSP = 0;
  int nCSP = 0;
  char *zAll;
  char *zCopy;
  int nAll = 0;
  int jj;
  int nSemi;

  zAll = style_csp(0);
  nAll = (int)strlen(zAll);
  for(jj=nSemi=0; jj<nAll; jj++){ if( zAll[jj]==';' ) nSemi++; }
  azCSP = fossil_malloc( nAll+1+(nSemi+2)*sizeof(char*) );
  zCopy = (char*)&azCSP[nSemi+2];
  memcpy(zCopy,zAll,nAll);
  zCopy[nAll] = 0;
  while( fossil_isspace(zCopy[0]) || zCopy[0]==';' ){ zCopy++; }
  azCSP[0] = zCopy;
  nCSP = 1;
  for(jj=0; zCopy[jj]; jj++){
    if( zCopy[jj]==';' ){
      int k;
      for(k=jj-1; k>0 && fossil_isspace(zCopy[k]); k--){ zCopy[k] = 0; }
      zCopy[jj] = 0;
      while( jj+1<nAll
         && (fossil_isspace(zCopy[jj+1]) || zCopy[jj+1]==';')
      ){
        jj++;
      }
      assert( nCSP<nSemi+1 );
      azCSP[nCSP++] = zCopy+jj;
    }
  }
  assert( nCSP<=nSemi+2 );
  azCSP[nCSP] = 0;
  fossil_free(zAll);
  return azCSP;
}

/*
** WEBPAGE: secaudit0
**
** Run a security audit of the current Fossil setup, looking
** for configuration problems that might allow unauthorized
** access to the repository.
**
** This page requires administrator access.  It is usually
** accessed using the Admin/Security-Audit menu option
** from any of the default skins.
*/
void secaudit0_page(void){
  const char *zAnonCap;      /* Capabilities of user "anonymous" and "nobody" */
  const char *zDevCap;       /* Capabilities of user group "developer" */
  const char *zReadCap;      /* Capabilities of user group "reader" */
  const char *zPubPages;     /* GLOB pattern for public pages */
  const char *zSelfCap;      /* Capabilities of self-registered users */
  int hasSelfReg = 0;        /* True if able to self-register */
  const char *zPublicUrl;    /* Canonical access URL */
  Blob cmd;
  char *z;
  int n, i;
  CapabilityString *pCap;
  char **azCSP;              /* Parsed content security policy */

  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_header("Security Audit");
  @ <ol>

  /* Step 1:  Determine if the repository is public or private.  "Public"
  ** means that any anonymous user on the internet can access all content.
  ** "Private" repos require (non-anonymous) login to access all content,
  ** though some content may be accessible anonymously.
  */
  zAnonCap = db_text("", "SELECT fullcap(NULL)");
  zDevCap  = db_text("", "SELECT fullcap('v')");
  zReadCap = db_text("", "SELECT fullcap('u')");
  zPubPages = db_get("public-pages",0);
  hasSelfReg = db_get_boolean("self-register",0);
  pCap = capability_add(0, db_get("default-perms","u"));
  capability_expand(pCap);
  zSelfCap = capability_string(pCap);
  capability_free(pCap);
  if( hasAnyCap(zAnonCap,"as") ){
    @ <li><p>This repository is <big><b>Wildly INSECURE</b></big> because
    @ it grants administrator privileges to anonymous users.  You
    @ should <a href="takeitprivate">take this repository private</a>
    @ immediately!  Or, at least remove the Setup and Admin privileges
    @ for users "anonymous" and "login" on the
    @ <a href="setup_ulist">User Configuration</a> page.
  }else if( hasAnyCap(zSelfCap,"as") && hasSelfReg ){
    @ <li><p>This repository is <big><b>Wildly INSECURE</b></big> because
    @ it grants administrator privileges to self-registered users.  You
    @ should <a href="takeitprivate">take this repository private</a>
    @ and/or disable self-registration
    @ immediately!  Or, at least remove the Setup and Admin privileges
    @ from the default permissions for new users.
  }else if( hasAnyCap(zAnonCap,"y") ){
    @ <li><p>This repository is <big><b>INSECURE</b></big> because
    @ it allows anonymous users to push unversioned files.
    @ Fix this by <a href="takeitprivate">taking the repository private</a>
    @ or by removing the "y" permission from users "anonymous" and
    @ "nobody" on the <a href="setup_ulist">User Configuration</a> page.
  }else if( hasAnyCap(zSelfCap,"y") ){
    @ <li><p>This repository is <big><b>INSECURE</b></big> because
    @ it allows self-registered users to push unversioned files.
    @ Fix this by <a href="takeitprivate">taking the repository private</a>
    @ or by removing the "y" permission from the default permissions or
    @ by disabling self-registration.
  }else if( hasAnyCap(zAnonCap,"goz") ){
    @ <li><p>This repository is <big><b>PUBLIC</b></big>. All
    @ checked-in content can be accessed by anonymous users.
    @ <a href="takeitprivate">Take it private</a>.<p>
  }else if( hasAnyCap(zSelfCap,"goz") && hasSelfReg ){
    @ <li><p>This repository is <big><b>PUBLIC</b></big> because all
    @ checked-in content can be accessed by self-registered users.
    @ This repostory would be private if you disabled self-registration.</p>
  }else if( !hasAnyCap(zAnonCap, "jrwy234567")
         && (!hasSelfReg || !hasAnyCap(zSelfCap, "jrwy234567"))
         && (zPubPages==0 || zPubPages[0]==0) ){
    @ <li><p>This repository is <big><b>Completely PRIVATE</b></big>.
    @ A valid login and password is required to access any content.
  }else{
    @ <li><p>This repository is <big><b>Mostly PRIVATE</b></big>.
    @ A valid login and password is usually required, however some
    @ content can be accessed either anonymously or by self-registered
    @ users:
    @ <ul>
    if( hasSelfReg ){
      if( hasAnyCap(zAnonCap,"j") || hasAnyCap(zSelfCap,"j") ){
        @ <li> Wiki pages
      }
      if( hasAnyCap(zAnonCap,"r") || hasAnyCap(zSelfCap,"r") ){
        @ <li> Tickets
      }
      if( hasAnyCap(zAnonCap,"234567") || hasAnyCap(zSelfCap,"234567") ){
        @ <li> Forum posts
      }
    }
    if( zPubPages && zPubPages[0] ){
      Glob *pGlob = glob_create(zPubPages);
      int i;
      @ <li> "Public Pages" are URLs that match any of these GLOB patterns:
      @ <p><ul>
      for(i=0; i<pGlob->nPattern; i++){
        @ <li> %h(pGlob->azPattern[i])
      }
      @ </ul>
      @ <p>Anoymous users are vested with capabilities "%h(zSelfCap)" on
      @ public pages. See the "Public Pages" entry in the
      @ "User capability summary" below.
    }
    @ </ul>
    if( zPubPages && zPubPages[0] ){
      @ <p>Change GLOB patterns exceptions using the "Public pages" setting
      @ on the <a href="setup_access">Access Settings</a> page.</p>
    }
  }

  zPublicUrl = public_url();
  if( zPublicUrl!=0 ){
    int nOther = db_int(0, "SELECT count(*) FROM config"
                           " WHERE name GLOB 'baseurl:*'"
                           " AND name<>'baseurl:%q'", zPublicUrl);
    @ <li><p>The <a href="setup_config#eurl">canonical URL</a> for this
    @ repository is <a href="%s(zPublicUrl)">%h(zPublicUrl)</a>.
    if( nOther==1 ){
      @ This is also <a href="urllist?urlonly">1 other URL</a> that has
      @ been used to access this repository.
    }else if( nOther>=2 ){
      @ There are also
      @ <a href="urllist?all&urlonly">%d(nOther) other URLs</a> that have
      @ been used to access this repository.
    }
  }else{
    int nUrl = db_int(0, "SELECT count(*) FROM config"
                         " WHERE name GLOB 'baseurl:*'");
    @ <li><p>This repository does not have a
    @ <a href="setup_config#eurl">canonical access URL</a>.
    if( nUrl==1 ){
      @ There is
      @ <a href="urllist?urlonly">1 non-canonical URL</a>
      @ that has been used to access this repository.
    }else if( nUrl>=2 ){
      @ There are
      @ <a href="urllist?all&urlonly">%d(nUrl) non-canonical URLs</a>
      @ that have been used to access this repository.
    }
  }

  /* Make sure the HTTPS is required for login, at least, so that the
  ** password does not go across the Internet in the clear.
  */
  if( db_get_int("redirect-to-https",0)==0 ){
    @ <li><p><b>WARNING:</b>
    @ Sensitive material such as login passwords can be sent over an
    @ unencrypted connection.
    @ Fix this by changing the "Redirect to HTTPS" setting on the
    @ <a href="setup_access">Access Control</a> page. If you were using
    @ the old "Redirect to HTTPS on Login Page" setting, switch to the
    @ new setting: it has a more secure implementation.
  }

#ifdef FOSSIL_ENABLE_TH1_DOCS
  /* The use of embedded TH1 is dangerous.  Warn if it is possible.
  */
  if( !Th_AreDocsEnabled() ){
    @ <li><p>
    @ This server is compiled with -DFOSSIL_ENABLE_TH1_DOCS. TH1 docs
    @ are disabled for this particular repository, so you are safe for
    @ now.  However, to prevent future problems caused by accidentally
    @ enabling TH1 docs in the future, it is recommended that you
    @ recompile Fossil without the -DFOSSIL_ENABLE_TH1_DOCS flag.</p>
  }else{
    @ <li><p><b>DANGER:</b>
    @ This server is compiled with -DFOSSIL_ENABLE_TH1_DOCS and TH1 docs
    @ are enabled for this repository.  Anyone who can check-in or push
    @ to this repository can create a malicious TH1 script and then cause
    @ that script to be run on the server. This is a serious security concern.
    @ TH1 docs should only be enabled for repositories with a very limited
    @ number of trusted committers, and the repository should be monitored
    @ closely to ensure no hostile content sneaks in.  If a bad TH1 script
    @ does make it into the repository, the only want to prevent it from
    @ being run is to shun it.</p>
    @
    @ <p>Disable TH1 docs by recompiling Fossil without the
    @ -DFOSSIL_ENABLE_TH1_DOCS flag, and/or clear the th1-docs setting
    @ and ensure that the TH1_ENABLE_DOCS environment variable does not
    @ exist in the environment.</p>
  }
#endif

#if FOSSIL_ENABLE_TCL
  @ <li><p>
  if( db_get_boolean("tcl",0) ){
    #ifdef FOSSIL_ENABLE_TH1_DOCS
      if( Th_AreDocsEnabled() ){
        @ <b>DANGER:</b>
      }else{
        @ <b>WARNING:</b>
      }
    #else
      @ <b>WARNING:</b>
    #endif
    @ This server is compiled with -DFOSSIL_ENABLE_TCL and Tcl integration
    @ is enabled for this repository.  Anyone who can execute malicious
    @ TH1 script on that server can also execute arbitrary Tcl script
    @ under the identity of the operating system process of that server.
    @ This is a serious security concern.</p>
    @
    @ <p>Disable Tcl integration by recompiling Fossil without the
    @ -DFOSSIL_ENABLE_TCL flag, and/or clear the 'tcl' setting.</p>
  }else{
    @ This server is compiled with -DFOSSIL_ENABLE_TCL. Tcl integration
    @ is disabled for this particular repository, so you are safe for
    @ now.  However, to prevent potential problems caused by accidentally
    @ enabling Tcl integration in the future, it is recommended that you
    @ recompile Fossil without the -DFOSSIL_ENABLE_TCL flag.</p>
  }
#endif

  /* Anonymous users should not be able to harvest email addresses
  ** from tickets.
  */
  if( hasAnyCap(zAnonCap, "e") ){
    @ <li><p><b>WARNING:</b>
    @ Anonymous users can view email addresses and other personally
    @ identifiable information on tickets.
    @ Fix this by removing the "Email" privilege
    @ (<a href="setup_ucap_list">capability "e"</a>) from users
    @ "anonymous" and "nobody" on the
    @ <a href="setup_ulist">User Configuration</a> page.
  }

  /* Anonymous users probably should not be allowed to push content
  ** to the repository.
  */
  if( hasAnyCap(zAnonCap, "i") ){
    @ <li><p><b>WARNING:</b>
    @ Anonymous users can push new check-ins into the repository.
    @ Fix this by removing the "Check-in" privilege
    @ (<a href="setup_ucap_list">capability</a> "i") from users
    @ "anonymous" and "nobody" on the
    @ <a href="setup_ulist">User Configuration</a> page.
  }

  /* Anonymous users probably should not be allowed act as moderators
  ** for wiki or tickets.
  */
  if( hasAnyCap(zAnonCap, "lq5") ){
    @ <li><p><b>WARNING:</b>
    @ Anonymous users can act as moderators for wiki, tickets, or
    @ forum posts. This defeats the whole purpose of moderation.
    @ Fix this by removing the "Mod-Wiki", "Mod-Tkt", and "Mod-Forum"
    @ privileges (<a href="%R/setup_ucap_list">capabilities</a> "fq5")
    @ from users "anonymous" and "nobody"
    @ on the <a href="setup_ulist">User Configuration</a> page.
  }

  /* Check to see if any TH1 scripts are configured to run on a sync
  */
  if( db_exists("SELECT 1 FROM config WHERE name GLOB 'xfer-*-script'"
                " AND length(value)>0") ){
    @ <li><p><b>WARNING:</b>
    @ TH1 scripts might be configured to run on any sync, push, pull, or
    @ clone operation.  See the the <a href="%R/xfersetup">/xfersetup</a>
    @ page for more information.  These TH1 scripts are a potential
    @ security concern and so should be carefully audited by a human.
  }

  /* The strict-manifest-syntax setting should be on. */
  if( db_get_boolean("strict-manifest-syntax",1)==0 ){
    @ <li><p><b>WARNING:</b>
    @ The "strict-manifest-syntax"  flag is off.  This is a security
    @ risk.  Turn this setting on (its default) to protect the users
    @ of this repository.
  }

  /* Obsolete:  */
  if( hasAnyCap(zAnonCap, "d") ||
      hasAnyCap(zDevCap,  "d") ||
      hasAnyCap(zReadCap, "d") ){
    @ <li><p><b>WARNING:</b>
    @ One or more users has the <a
    @ href="https://fossil-scm.org/forum/forumpost/43c78f4bef">obsolete</a>
    @ "d" capability. You should remove it using the
    @ <a href="setup_ulist">User Configuration</a> page in case we
    @ ever reuse the letter for another purpose.
  }

  /* If anonymous users are allowed to create new Wiki, then
  ** wiki moderation should be activated to pervent spam.
  */
  if( hasAnyCap(zAnonCap, "fk") ){
    if( db_get_boolean("modreq-wiki",0)==0 ){
      @ <li><p><b>WARNING:</b>
      @ Anonymous users can create or edit wiki without moderation.
      @ This can result in robots inserting lots of wiki spam into
      @ repository.
      @ Fix this by removing the "New-Wiki" and "Write-Wiki"
      @ privileges from users "anonymous" and "nobody" on the
      @ <a href="setup_ulist">User Configuration</a> page or
      @ by enabling wiki moderation on the
      @ <a href="setup_modreq">Moderation Setup</a> page.
    }else{
      @ <li><p>
      @ Anonymous users can create or edit wiki, but moderator
      @ approval is required before the edits become permanent.
    }
  }

  /* Anonymous users should not be able to create trusted forum
  ** posts.
  */
  if( hasAnyCap(zAnonCap, "456") ){
    @ <li><p><b>WARNING:</b>
    @ Anonymous users can create forum posts that are
    @ accepted into the permanent record without moderation.
    @ This can result in robots generating spam on forum posts.
    @ Fix this by removing the "WriteTrusted-Forum" privilege
    @ (<a href="setup_ucap_list">capabilities</a> "456") from
    @ users "anonymous" and "nobody" on the
    @ <a href="setup_ulist">User Configuration</a> page or
  }

  /* Anonymous users should not be able to send announcements.
  */
  if( hasAnyCap(zAnonCap, "A") ){
    @ <li><p><b>WARNING:</b>
    @ Anonymous users can send announcements to anybody who is signed
    @ up to receive announcements.  This can result in spam.
    @ Fix this by removing the "Announce" privilege
    @ (<a href="setup_ucap_list">capability</a> "A") from
    @ users "anonymous" and "nobody" on the
    @ <a href="setup_ulist">User Configuration</a> page or
  }

  /* Administrative privilege should only be provided to
  ** specific individuals, not to entire classes of people.
  ** And not too many people should have administrator privilege.
  */
  z = db_text(0,
    "SELECT group_concat("
                 "printf('<a href=''setup_uedit?id=%%d''>%%s</a>',uid,login),"
             "' and ')"
    " FROM user"
    " WHERE cap GLOB '*[as]*'"
    "   AND login in ('anonymous','nobody','reader','developer')"
  );
  if( z && z[0] ){
    @ <li><p><b>WARNING:</b>
    @ Administrative privilege ('a' or 's')
    @ is granted to an entire class of users: %s(z).
    @ Administrative privilege should only be
    @ granted to specific individuals.
  }
  n = db_int(0,"SELECT count(*) FROM user WHERE fullcap(cap) GLOB '*[as]*'");
  if( n==0 ){
    @ <li><p>
    @ No users have administrator privilege.
  }else{
    z = db_text(0,
      "SELECT group_concat("
                 "printf('<a href=''setup_uedit?id=%%d''>%%s</a>',uid,login),"
             "', ')"
      " FROM user"
      " WHERE fullcap(cap) GLOB '*[as]*'"
    );
    @ <li><p>
    @ Users with administrator privilege are: %s(z)
    fossil_free(z);
    if( n>3 ){
      @ <li><p><b>WARNING:</b>
      @ Administrator privilege is granted to
      @ <a href='setup_ulist?with=as'>%d(n) users</a>.
      @ Ideally, administrator privilege ('s' or 'a') should only
      @ be granted to one or two users.
    }
  }

  /* The push-unversioned privilege should only be provided to
  ** specific individuals, not to entire classes of people.
  ** And no too many people should have this privilege.
  */
  z = db_text(0,
    "SELECT group_concat("
                 "printf('<a href=''setup_uedit?id=%%d''>%%s</a>',uid,login),"
             "' and ')"
    " FROM user"
    " WHERE cap GLOB '*y*'"
    "   AND login in ('anonymous','nobody','reader','developer')"
  );
  if( z && z[0] ){
    @ <li><p><b>WARNING:</b>
    @ The "Write-Unver" privilege is granted to an entire class of users: %s(z).
    @ The Write-Unver privilege should only be granted to specific individuals.
    fossil_free(z);
  }
  n = db_int(0,"SELECT count(*) FROM user WHERE cap GLOB '*y*'");
  if( n>0 ){
    z = db_text(0,
       "SELECT group_concat("
          "printf('<a href=''setup_uedit?id=%%d''>%%s</a>',uid,login),', ')"
       " FROM user WHERE fullcap(cap) GLOB '*y*'"
    );
    @ <li><p>
    @ Users with "Write-Unver" privilege: %s(z)
    fossil_free(z);
    if( n>3 ){
      @ <p><b>Caution:</b>
      @ The "Write-Unver" privilege ('y') is granted to an excessive
      @ number of users (%d(n)).
      @ Ideally, the Write-Unver privilege should only
      @ be granted to one or two users.
    }
  }

  /* Providing hyperlink capability to user "nobody" can lead to robots
  ** making excessive requests resulting in DoS
  */
  if( db_exists("SELECT 1 FROM user WHERE login='nobody' AND cap GLOB '*h*'") ){
    int nobodyId = db_int(0,"SELECT uid FROM user WHERE login='nobody'");
    int anonId = db_int(0,
      "SELECT uid FROM user WHERE login='anonymous' AND cap NOT GLOB '*h*'");
    @ <li><p>
    @ User "nobody" has "Hyperlink" privilege ('h') which can lead to
    @ robots walking a nearly endless progression of pages on public-facing
    @ repositories, causing excessive server load and possible DoS.
    @ Suggested remediation:
    @ <ol type="a">
    @ <li>Remove the 'h' privilege from the
    @     <a href="%R/setup_uedit?id=%d(nobodyId)">'nobody' user</a> so that
    @     robots cannot see hyperlinks.
    @ <li>Activate <a href="%R/setup_robot">autohyperlink</a> so that
    @     human readers can still see hyperlinks even if they are not logged in.
    @     Set the delay to at least 50 milliseconds and require a mouse
    @     event for maximum robot defense.
    if( anonId>0 ){
      @ <li>Perhaps set the 'h' privilege on the
      @     <a href="%R/setup_uedit?id=%d(anonId)">'anonymous' user</a> so
      @     that humans that have javascript disabled in their browsers can
      @     still see hyperlinks if they will log in as "anonymous".
    }
    @ </ol>
  }

  /* Notify if REMOTE_USER or HTTP_AUTHENTICATION is used for login.
  */
  if( db_get_boolean("remote_user_ok", 0) ){
    @ <li><p><b>Caution:</b>
    @ This repository trusts that the REMOTE_USER environment variable set
    @ up by the webserver contains the name of an authenticated user.
    @ Fossil's built-in authentication mechanism is bypassed.
    @ Fix this by deactivating the "Allow REMOTE_USER authentication"
    @ checkbox on the <a href="setup_access">Access Control</a> page.
  }
  if( db_get_boolean("http_authentication_ok", 0) ){
    @ <li><p><b>Caution:</b>
    @ This repository trusts that the HTTP_AUTHENITICATION environment
    @ variable set up by the webserver contains the name of an
    @ authenticated user.
    @ Fossil's built-in authentication mechanism is bypassed.
    @ Fix this by deactivating the "Allow HTTP_AUTHENTICATION authentication"
    @ checkbox on the <a href="setup_access">Access Control</a> page.
  }

  /* Logging should be turned on
  */
  if( db_get_boolean("access-log",0)==0 ){
    @ <li><p>
    @ The <a href="access_log">User Log</a> is disabled.  The user log
    @ keeps a record of successful and unsuccessful login attempts and is
    @ useful for security monitoring.
  }
  if( db_get_boolean("admin-log",0)==0 ){
    @ <li><p>
    @ The <a href="admin_log">Administrative Log</a> is disabled.
    @ The administrative log provides a record of configuration changes
    @ and is useful for security monitoring.
  }

#if !defined(_WIN32) && !defined(FOSSIL_OMIT_LOAD_AVERAGE)
  /* Make sure that the load-average limiter is armed and working */
  if( load_average()==0.0 ){
    @ <li><p>
    @ Unable to get the system load average.  This can prevent Fossil
    @ from throttling expensive operations during peak demand.
    @ If running in a chroot jail on Linux, verify that the /proc
    @ filesystem is mounted within the jail, so that the load average
    @ can be obtained from the /proc/loadavg file.
  }else {
    double r = atof(db_get("max-loadavg", "0.0"));
    if( r<=0.0 ){
      @ <li><p>
      @ Load average limiting is turned off.  This can cause the server
      @ to bog down if many requests for expensive services (such as
      @ large diffs or tarballs) arrive at about the same time.
      @ To fix this, set the
      @ <a href='%R/setup_access#slal'>"Server Load Average Limit"</a> on the
      @ <a href='%R/setup_access'>Access Control</a> page to the approximate
      @ the number of available cores on your server, or maybe just a little
      @ less.
    }else if( r>=8.0 ){
      @ <li><p>
      @ The <a href='%R/setup_access#slal'>"Server Load Average Limit"</a> on
      @ the <a href="setup_access">Access Control</a> page is set to %g(r),
      @ which seems high.  Is this server really a %d((int)r)-core machine?
    }
  }
#endif

  if( g.zErrlog==0 || fossil_strcmp(g.zErrlog,"-")==0 ){
    @ <li><p>
    @ The server error log is disabled.
    @ To set up an error log,
    if( fossil_strcmp(g.zCmdName, "cgi")==0 ){
      @ make an entry like "errorlog: <i>FILENAME</i>" in the
      @ CGI script at %h(P("SCRIPT_FILENAME")).
    }else{
      @ add the "--errorlog <i>FILENAME</i>" option to the
      @ "%h(g.argv[0]) %h(g.zCmdName)" command that launched this server.
    }
  }else{
    FILE *pTest = fossil_fopen(g.zErrlog,"a");
    if( pTest==0 ){
      @ <li><p>
      @ <b>Error:</b>
      @ There is an error log at "%h(g.zErrlog)" but that file is not
      @ writable and so no logging will occur.
    }else{
      fclose(pTest);
      @ <li><p>
      @ The error log at "<a href='%R/errorlog'>%h(g.zErrlog)</a>" is
      @ %,lld(file_size(g.zErrlog, ExtFILE)) bytes in size.
    }
  }

  if( g.zExtRoot ){
    int nFile;
    int nCgi;
    ext_files();
    nFile = db_int(0, "SELECT count(*) FROM sfile");
    nCgi = nFile==0 ? 0 : db_int(0,"SELECT count(*) FROM sfile WHERE isexe");
    @ <li><p> CGI Extensions are enabled with a document root
    @ at <a href='%R/extfilelist'>%h(g.zExtRoot)</a> holding
    @ %d(nCgi) CGIs and %d(nFile-nCgi) static content and data files.
  }

  if( fileedit_glob()!=0 ){
    @ <li><p><a href='%R/fileedit'>Online File Editing</a> is enabled
    @ for this repository.  Clear the
    @ <a href='%R/setup_settings'>"fileedit-glob" setting</a> to
    @ disable online editing.</p>
  }

  @ <li><p> User capability summary:
  capability_summary();


  azCSP = parse_content_security_policy();
  if( azCSP==0 ){
    @ <li><p> WARNING: No Content Security Policy (CSP) is specified in the
    @ header. Though not required, a strong CSP is recommended. Fossil will
    @ automatically insert an appropriate CSP if you let it generate the
    @ HTML <tt>&lt;head&gt;</tt> element by omitting <tt>&lt;body&gt;</tt>
    @ from the header configuration in your customized skin.
    @
  }else{
    int ii;
    @ <li><p> Content Security Policy:
    @ <ol type="a">
    for(ii=0; azCSP[ii]; ii++){
      @ <li>%h(azCSP[ii])
    }
    @ </ol>
  }
  fossil_free(azCSP);

  if( alert_enabled() ){
    @ <li><p> Email alert configuration summary:
    @ <table class="label-value">
    stats_for_email();
    @ </table>
  }else{
    @ <li><p> Email alerts are disabled
  }

  n = db_int(0,"SELECT count(*) FROM ("
               "SELECT rid FROM phantom EXCEPT SELECT rid FROM private)");
  if( n>0 ){
    @ <li><p>\
    @ There exists public phantom artifacts in this repository, shown below.
    @ Phantom artifacts are artifacts whose hash name is referenced by some
    @ other artifact but whose content is unknown.  Some phantoms are marked
    @ private and those are ignored.  But public phantoms cause unnecessary
    @ sync traffic and might represent malicious attempts to corrupt the
    @ repository structure.
    @ </p><p>
    @ To suppress unnecessary sync traffic caused by phantoms, add the RID
    @ of each phantom to the "private" table.  Example:
    @ <blockquote><pre>
    @    INSERT INTO private SELECT rid FROM blob WHERE content IS NULL;
    @ </pre></blockquote>
    @ </p>
    table_of_public_phantoms();
    @ </li>
  }

  @ <li><p>Robot Defenses:
  @ <ol type="a">
  switch( db_get_int("auto-hyperlink",1) ){
    default:
       @ <li> No auto-enable of hyperlinks.
       break;
    case 1:
       @ <li> Hyperlinks auto-enabled based on UserAgent and Javascript.
       break;
    case 2:
       @ <li> Hyperlinks auto-enabled based on UserAgent only.
       break;
  }
  z = db_get("max-loadavg",0);
  if( z && atof(z)>0.0 ){
    @ <li> Maximum load average for expensive requests: %h(z);
  }else{
    @ <li> No limits on the load average
  }
  z = db_get("robot-restrict",0);
  if( z==0 ){
    @ <li> No complex-request constraints on robots
  }else{
    @ <li> Complex requests limited for pages matching: %h(z)
  }
  @ </ol>

  blob_init(&cmd, 0, 0);
  for(i=0; g.argvOrig[i]!=0; i++){
    blob_append_escaped_arg(&cmd, g.argvOrig[i], 0);
  }
  @ <li><p>
  if( g.zCgiFile ){
    Blob fullname;
    blob_init(&fullname, 0, 0);
    file_canonical_name(g.zCgiFile, &fullname, 0);
    @ The CGI control file for this page is "%h(blob_str(&fullname))".
  }
  @ The command that generated this page:
  @ <blockquote>
  @ <tt>%h(blob_str(&cmd))</tt>
  @ </blockquote></li>
  blob_zero(&cmd);

  @ </ol>
  style_finish_page();
}

/*
** WEBPAGE: takeitprivate
**
** Disable anonymous access to this website
*/
void takeitprivate_page(void){
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  if( P("cancel") ){
    /* User pressed the cancel button.  Go back */
    cgi_redirect("secaudit0");
  }
  if( P("apply") ){
    db_unprotect(PROTECT_ALL);
    db_multi_exec(
      "UPDATE user SET cap=''"
      " WHERE login IN ('nobody','anonymous');"
      "DELETE FROM config WHERE name='public-pages';"
    );
    db_set("self-register","0",0);
    db_protect_pop();
    cgi_redirect("secaudit0");
  }
  style_header("Make This Website Private");
  @ <p>Click the "Make It Private" button below to disable all
  @ anonymous access to this repository.  A valid login and password
  @ will be required to access this repository after clicking that
  @ button.</p>
  @
  @ <p>Click the "Cancel" button to leave things as they are.</p>
  @
  @ <form action="%s(g.zPath)" method="post">
  @ <input type="submit" name="apply" value="Make It Private">
  @ <input type="submit" name="cancel" value="Cancel">
  @ </form>

  style_finish_page();
}

/*
** Output a message explaining that no error log is available.
*/
static void no_error_log_available(void){
  @ <p>No error log is configured.
  if( g.zCgiFile==0 ){
    @ To create an error log, add the "--errorlog FILENAME"
    @ command-line option to the command that launches the Fossil server.
  }else{
    Blob fullname;
    blob_init(&fullname, 0, 0);
    file_canonical_name(g.zCgiFile, &fullname, 0);
    @ To create an error log, edit the CGI control file
    @ named "%h(blob_str(&fullname))" to add a line like this:
    @ <blockquote><pre>
    @ errorlog: <i>FILENAME</i>
    @ </pre></blockquote>
    blob_reset(&fullname);
  }
}

/*
** The maximum number of bytes of the error log to show by default.
*/
#define MXSHOWLOG 500000

/*
** WEBPAGE: errorlog
**
** Show the content of the error log.  Only the administrator can view
** this page.
*/
void errorlog_page(void){
  i64 szFile;
  FILE *in;
  char *zLog;
  char z[10000];
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_header("Server Error Log");
  style_submenu_element("Test", "%R/test-warning");
  style_submenu_element("Refresh", "%R/errorlog");
  style_submenu_element("Log-Menu", "%R/setup-logmenu");
  style_submenu_element("Panics", "%R/paniclog");
  style_submenu_element("Non-Hacks", "%R/hacklog?not");

  if( g.zErrlog==0 || fossil_strcmp(g.zErrlog,"-")==0 ){
    no_error_log_available();
    style_finish_page();
    return;
  }
  if( P("truncate1") && cgi_csrf_safe(2) ){
    fclose(fopen(g.zErrlog,"w"));
  }
  if( P("download") ){
    Blob log;
    blob_read_from_file(&log, g.zErrlog, ExtFILE);
    cgi_set_content_type("text/plain");
    cgi_set_content(&log);
    return;
  }
  szFile = file_size(g.zErrlog, ExtFILE);
  if( P("truncate") ){
    @ <form action="%R/errorlog" method="POST">
    login_insert_csrf_secret();
    @ <p>Confirm that you want to truncate the %,lld(szFile)-byte error log:
    @ <input type="submit" name="truncate1" value="Confirm">
    @ <input type="submit" name="cancel" value="Cancel">
    @ </form>
    style_finish_page();
    return;
  }
  zLog = file_canonical_name_dup(g.zErrlog);
  @ <p>The server error log at "%h(zLog)" is %,lld(szFile) bytes in size.
  fossil_free(zLog);
  style_submenu_element("Download", "%R/errorlog?download");
  style_submenu_element("Truncate", "%R/errorlog?truncate");
  in = fossil_fopen(g.zErrlog, "rb");
  if( in==0 ){
    @ <p class='generalError'>Unable to open that file for reading!</p>
    style_finish_page();
    return;
  }
  if( szFile>MXSHOWLOG && P("all")==0 ){
    @ <form action="%R/errorlog" method="POST">
    @ <p>Only the last %,d(MXSHOWLOG) bytes are shown.
    @ <input type="submit" name="all" value="Show All">
    @ </form>
    fseek(in, -MXSHOWLOG, SEEK_END);
  }
  @ <hr>
  @ <pre>
  while( fgets(z, sizeof(z), in) ){
    @ %h(z)\
  }
  fclose(in);
  @ </pre>
  style_finish_page();
}

/*
** WEBPAGE: paniclog
**
** Scan the error log for panics.  Show all panic messages, ignoring all
** other error log entries.
*/
void paniclog_page(void){
  i64 szFile;
  char *zLog;
  FILE *in;
  int bOutput = 0;
  int prevWasTime = 0;
  char z[10000];
  char zTime[10000];

  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_header("Server Panic Log");
  style_submenu_element("Log-Menu", "%R/setup-logmenu");

  if( g.zErrlog==0 || fossil_strcmp(g.zErrlog,"-")==0 ){
    no_error_log_available();
    style_finish_page();
    return;
  }
  in = fossil_fopen(g.zErrlog, "rb");
  if( in==0 ){
    @ <p class='generalError'>Unable to open that file for reading!</p>
    style_finish_page();
    return;
  }
  szFile = file_size(g.zErrlog, ExtFILE);
  zLog = file_canonical_name_dup(g.zErrlog);
  @ Panic messages contained within the %lld(szFile)-byte 
  @ <a href="%R/errorlog?all">error log</a> found at
  @ "%h(zLog)".
  fossil_free(zLog);
  @ <hr>
  @ <pre>
  while( fgets(z, sizeof(z), in) ){
    if( prevWasTime
     && (strncmp(z,"panic: ", 7)==0 || strstr(z," assertion fault ")!=0)
    ){
      @ %h(zTime)\
      bOutput = 1;
    }
    if( strncmp(z, "--------", 8)==0 ){
      size_t n = strlen(z);
      memcpy(zTime, z, n+1);
      prevWasTime = 1;
      bOutput = 0;
    }else{
      prevWasTime = 0;
    }
    if( bOutput ){
      @ %h(z)\
    }
  }
  fclose(in);
  @ </pre>
  style_finish_page();
}

/*
** WEBPAGE: hacklog
**
** Scan the error log for "possible hack attempt" entries  Show hack
** attempt messages only, omitting all others.  Or if the "not" query
** parameter is present, show only messages that are not hack attempts.
*/
void hacklog_page(void){
  i64 szFile;
  char *zLog;
  FILE *in;
  int bOutput = 0;
  int prevWasTime = 0;
  int isNot = P("not")!=0;
  char z[10000];
  char zTime[10000];

  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_header("Server Hack Log");
  style_submenu_element("Log-Menu", "%R/setup-logmenu");

  if( g.zErrlog==0 || fossil_strcmp(g.zErrlog,"-")==0 ){
    no_error_log_available();
    style_finish_page();
    return;
  }
  in = fossil_fopen(g.zErrlog, "rb");
  if( in==0 ){
    @ <p class='generalError'>Unable to open that file for reading!</p>
    style_finish_page();
    return;
  }
  szFile = file_size(g.zErrlog, ExtFILE);
  zLog = file_canonical_name_dup(g.zErrlog);
  @ %s(isNot?"Non-hack":"Hack") messages contained within the %lld(szFile)-byte 
  @ <a href="%R/errorlog?all">error log</a> found at
  @ "%h(zLog)".
  fossil_free(zLog);
  @ <hr>
  @ <pre>
  while( fgets(z, sizeof(z), in) ){
    if( prevWasTime 
     && ((strncmp(z,"possible hack attempt - 418 ", 27)==0) ^ isNot)
    ){
      @ %h(zTime)\
      bOutput = 1;
    }
    if( strncmp(z, "--------", 8)==0 ){
      size_t n = strlen(z);
      memcpy(zTime, z, n+1);
      prevWasTime = 1;
      bOutput = 0;
    }else{
      prevWasTime = 0;
    }
    if( bOutput ){
      @ %h(z)\
    }
  }
  fclose(in);
  @ </pre>
  style_finish_page();
}
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Implementation of the Setup page
*/
#include "config.h"
#include <assert.h>
#include "config.h"
#include "setup.h"

#include "setup.h"

/*
** Increment the "cfgcnt" variable, so that ETags will know that
** the configuration has changed.
*/
void setup_incr_cfgcnt(void){
  static int once = 1;
  if( once ){
    once = 0;
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec("UPDATE config SET value=value+1 WHERE name='cfgcnt'");
    if( db_changes()==0 ){
      db_multi_exec("INSERT INTO config(name,value) VALUES('cfgcnt',1)");
    }
    db_protect_pop();
  }
}

/*
** Output a single entry for a menu generated using an HTML table.
** If zLink is not NULL or an empty string, then it is the page that
** the menu entry will hyperlink to.  If zLink is NULL or "", then
** the menu entry has no hyperlink - it is disabled.
*/
void setup_menu_entry(
  const char *zTitle,
  const char *zLink,
  const char *zDesc
){
  @ <tr><td valign="top" align="right">
  if( zLink && zLink[0] ){
    @ <a href="%s(zLink)">%h(zTitle)</a>
    @ <a href="%s(zLink)"><nobr>%h(zTitle)</nobr></a>
  }else{
    @ %h(zTitle)
  }
  @ </td><td valign="top">%h(zDesc)</td></tr>
  @ </td><td width="5"></td><td valign="top">%h(zDesc)</td></tr>
}



/*
** WEBPAGE: /setup
** WEBPAGE: setup
**
** Main menu for the administrative pages.  Requires Admin or Setup
** privileges.  Links to sub-pages only usable by Setup users are
** shown only to Setup users.
*/
void setup_page(void){
  int setup_user = 0;
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
  }
  setup_user = g.perm.Setup;

  style_set_current_feature("setup");
  style_header("Server Administration");

  /* Make sure the header contains <base href="...">.   Issue a warning
  ** if it does not. */
  if( !cgi_header_contains("<base href=") ){
    @ <p class="generalError"><b>Configuration Error:</b> Please add
    @ <tt>&lt;base href="$secureurl/$current_page"&gt;</tt> after
    @ <tt>&lt;head&gt;</tt> in the
    @ <a href="setup_skinedit?w=2">HTML header</a>!</p>
  }

#if !defined(_WIN32)
  /* Check for /dev/null and /dev/urandom.  We want both devices to be present,
  ** but they are sometimes omitted (by mistake) from chroot jails. */
  if( access("/dev/null", R_OK|W_OK) ){
    @ <p class="generalError">WARNING: Device "/dev/null" is not available
    @ for reading and writing.</p>
  }
  if( access("/dev/urandom", R_OK) ){
    @ <p class="generalError">WARNING: Device "/dev/urandom" is not available
    @ for reading. This means that the pseudo-random number generator used
    @ by SQLite will be poorly seeded.</p>
  }
#endif

  @ <table border="0" cellspacing="20">
  @ <table border="0" cellspacing="3">
  setup_menu_entry("Users", "setup_ulist",
    "Grant privileges to individual users.");
  if( setup_user ){
  setup_menu_entry("Access", "setup_access",
    "Control access settings.");
  setup_menu_entry("Configuration", "setup_config",
    "Configure the WWW components of the repository");
    setup_menu_entry("Access", "setup_access",
      "Control access settings.");
    setup_menu_entry("Configuration", "setup_config",
      "Configure the WWW components of the repository");
  }
  setup_menu_entry("Security-Audit", "secaudit0",
    "Analyze the current configuration for security problems");
  if( setup_user ){
    setup_menu_entry("Robot-Defense", "setup_robot",
      "Settings for configure defense against robots");
    setup_menu_entry("Settings", "setup_settings",
      "Web interface to the \"fossil settings\" command");
  }
  setup_menu_entry("Timeline", "setup_timeline",
    "Timeline display preferences");
  if( setup_user ){
    setup_menu_entry("Login-Group", "setup_login_group",
      "Manage single sign-on between this repository and others"
      " on the same server");
  setup_menu_entry("Tickets", "tktsetup",
    "Configure the trouble-ticketing system for this repository");
  setup_menu_entry("Skins", "setup_skin",
    "Select from a menu of prepackaged \"skins\" for the web interface");
  setup_menu_entry("CSS", "setup_editcss",
    setup_menu_entry("Tickets", "tktsetup",
      "Configure the trouble-ticketing system for this repository");
    setup_menu_entry("Wiki", "setup_wiki",
      "Configure the wiki for this repository");
    setup_menu_entry("Interwiki Map", "intermap",
      "Mapping keywords for interwiki links");
    setup_menu_entry("Chat", "setup_chat",
      "Configure the chatroom");
    setup_menu_entry("Forum", "setup_forum",
      "Forum config and metrics");
  }
  setup_menu_entry("Search","srchsetup",
    "Configure the built-in search engine");
  setup_menu_entry("URL Aliases", "waliassetup",
    "Configure URL aliases");
  if( setup_user ){
    setup_menu_entry("Notification", "setup_notification",
      "Automatic notifications of changes via outbound email");
    setup_menu_entry("Transfers", "xfersetup",
      "Configure the transfer system for this repository");
  }
  setup_menu_entry("Skins", "setup_skin_admin",
    "Select and/or modify the web interface \"skins\"");
  setup_menu_entry("Moderation", "setup_modreq",
    "Edit the Cascading Style Sheet used by all pages of this repository");
  setup_menu_entry("Header", "setup_header",
    "Edit HTML text inserted at the top of every page");
  setup_menu_entry("Footer", "setup_footer",
    "Edit HTML text inserted at the bottom of every page");
    "Enable/Disable requiring moderator approval of Wiki and/or Ticket"
    " changes and attachments.");
  setup_menu_entry("Ad-Unit", "setup_adunit",
    "Edit HTML text for an ad unit inserted after the menu bar");
  setup_menu_entry("URLs & Checkouts", "urllist",
    "Show URLs used to access this repo and known check-outs");
  if( setup_user ){
    setup_menu_entry("Web-Cache", "cachestat",
      "View the status of the expensive-page cache");
  }
  setup_menu_entry("Logo", "setup_logo",
    "Change the logo image for the server");
    "Change the logo and background images for the server");
  setup_menu_entry("Shunned", "shun",
    "Show artifacts that are shunned by this repository");
  setup_menu_entry("Log", "rcvfromlist",
    "A record of received artifacts and their sources");
  setup_menu_entry("Log Files", "setup-logmenu",
    "A menu of available log files");
  setup_menu_entry("Unversioned Files", "uvlist?byage=1",
    "Show all unversioned files held");
  setup_menu_entry("Stats", "stat",
    "Display repository statistics");
    "Repository Status Reports");
  @ </table>

  setup_menu_entry("Sitemap", "sitemap",
  style_footer();
}

    "Links to miscellaneous pages");
/*
** WEBPAGE: setup_ulist
  if( setup_user ){
**
** Show a list of users.  Clicking on any user jumps to the edit
** screen for that user.
*/
void setup_ulist(void){
    setup_menu_entry("SQL", "admin_sql",
  Stmt s;

      "Enter raw SQL commands");
  login_check_credentials();
  if( !g.okAdmin ){
    setup_menu_entry("TH1", "admin_th1",
    login_needed();
    return;
  }

      "Enter raw TH1 commands");
  style_submenu_element("Add", "Add User", "setup_uedit");
  style_header("User List");
  @ <table border="0" cellpadding="0" cellspacing="25">
  @ <tr><td valign="top">
  @ <b>Users:</b>
  @ <table border="1" cellpadding="10"><tr><td>
  @ <table cellspacing=0 cellpadding=0 border=0>
  @ <tr>
  @   <th align="right">User&nbsp;ID</th><td width="20">&nbsp;</td>
  @   <th>Capabilities</th><td width="15">&nbsp;</td>
  @   <th>Contact&nbsp;Info</th>
  @ </tr>
  db_prepare(&s, "SELECT uid, login, cap, info FROM user ORDER BY login");
  while( db_step(&s)==SQLITE_ROW ){
    const char *zCap = db_column_text(&s, 2);
    if( strstr(zCap, "s") ) zCap = "s";
    @ <tr>
    @ <td align="right">
    if( g.okAdmin && (zCap[0]!='s' || g.okSetup) ){
      @ <a href="setup_uedit?id=%d(db_column_int(&s,0))">
    }
  }
    @ <nobr>%h(db_column_text(&s,1))</nobr>
    if( g.okAdmin ){
      @ </a>
    }
    @ </td><td>&nbsp;&nbsp;&nbsp;</td>
    @ <td align="center">%s(zCap)</td>
    @ <td>&nbsp;&nbsp;&nbsp;</td>
    @ <td align="left">%s(db_column_text(&s,3))</td>
    @ </tr>
  }
  @ </table></td></tr></table>
  @ </table>
  @ <td valign="top">
  @ <b>Notes:</b>
  @ <ol>
  @ <li><p>The permission flags are as follows:</p>
  @ <table>
     @ <tr><td valign="top"><b>a</b></td>
     @   <td><i>Admin:</i> Create and delete users</td></tr>
     @ <tr><td valign="top"><b>b</b></td>
     @   <td><i>Attach:</i> Add attachments to wiki or tickets</td></tr>
     @ <tr><td valign="top"><b>c</b></td>
     @   <td><i>Append-Tkt:</i> Append to tickets</td></tr>
     @ <tr><td valign="top"><b>d</b></td>
     @   <td><i>Delete:</i> Delete wiki and tickets</td></tr>
     @ <tr><td valign="top"><b>e</b></td>
     @   <td><i>Email:</i> View sensitive data such as EMail addresses</td></tr>
     @ <tr><td valign="top"><b>f</b></td>
     @   <td><i>New-Wiki:</i> Create new wiki pages</td></tr>
     @ <tr><td valign="top"><b>g</b></td>
     @   <td><i>Clone:</i> Clone the repository</td></tr>
     @ <tr><td valign="top"><b>h</b></td>
     @   <td><i>Hyperlinks:</i> Show hyperlinks to detailed
     @   repository history</td></tr>
     @ <tr><td valign="top"><b>i</b></td>
     @   <td><i>Check-In:</i> Commit new versions in the repository</td></tr>
     @ <tr><td valign="top"><b>j</b></td>
     @   <td><i>Read-Wiki:</i> View wiki pages</td></tr>
     @ <tr><td valign="top"><b>k</b></td>
     @   <td><i>Write-Wiki:</i> Edit wiki pages</td></tr>
     @ <tr><td valign="top"><b>m</b></td>
     @   <td><i>Append-Wiki:</i> Append to wiki pages</td></tr>
     @ <tr><td valign="top"><b>n</b></td>
     @   <td><i>New-Tkt:</i> Create new tickets</td></tr>
     @ <tr><td valign="top"><b>o</b></td>
     @   <td><i>Check-Out:</i> Check out versions</td></tr>
     @ <tr><td valign="top"><b>p</b></td>
     @   <td><i>Password:</i> Change your own password</td></tr>
     @ <tr><td valign="top"><b>r</b></td>
     @   <td><i>Read-Tkt:</i> View tickets</td></tr>
     @ <tr><td valign="top"><b>s</b></td>
     @   <td><i>Setup/Super-user:</i> Setup and configure this website</td></tr>
     @ <tr><td valign="top"><b>t</b></td>
     @   <td><i>Tkt-Report:</i> Create new bug summary reports</td></tr>
     @ <tr><td valign="top"><b>u</b></td>
     @   <td><i>Reader:</i> Inherit privileges of
     @   user <tt>reader</tt></td></tr>
     @ <tr><td valign="top"><b>v</b></td>
     @   <td><i>Developer:</i> Inherit privileges of
     @   user <tt>developer</tt></td></tr>
     @ <tr><td valign="top"><b>w</b></td>
     @   <td><i>Write-Tkt:</i> Edit tickets</td></tr>
     @ <tr><td valign="top"><b>z</b></td>
     @   <td><i>Zip download:</i> Download a baseline via the
     @   <tt>/zip</tt> URL even without check<b>o</b>ut
     @    and <b>h</b>istory permissions</td></tr>
  @ </table>
  @ </li>
  @

  @ <li><p>
  @ Every user, logged in or not, inherits the privileges of <b>nobody</b>.
  @ </p></li>
  @
  @ <li><p>
  @ Any human can login as <b>anonymous</b> since the password is
  @ clearly displayed on the login page for them to type.  The purpose
  @ of requiring anonymous to log in is to prevent access by spiders.
  @ Every logged-in user inherits the combined privileges of
  @ <b>anonymous</b> and
  @ <b>nobody</b>.
  @ </p></li>
  @
  @ <li><p>
  @ Users with privilege <b>v</b> inherit the combined privileges of
  @ <b>developer</b>, <b>anonymous</b>, and <b>nobody</b>.
  @ </p></li>
  @
  @ </ol>
  @ </td></tr></table>
  style_footer();
  style_finish_page();
}

/*
** Return true if zPw is a valid password string.  A valid
** password string is:
**
**  (1)  A zero-length string, or
**  (2)  a string that contains a character other than '*'.
*/
static int isValidPwString(const char *zPw){
  if( zPw==0 ) return 0;
  if( zPw[0]==0 ) return 1;
  while( zPw[0]=='*' ){ zPw++; }
  return zPw[0]!=0;
}


/*
** WEBPAGE: /setup_uedit
*/
** WEBPAGE: setup-logmenu
**
void user_edit(void){
  const char *zId, *zLogin, *zInfo, *zCap, *zPw;
  char *oaa, *oas, *oar, *oaw, *oan, *oai, *oaj, *oao, *oap;
  char *oak, *oad, *oac, *oaf, *oam, *oah, *oag, *oae;
  char *oat, *oau, *oav, *oab, *oaz;
  const char *inherit[128];
  int doWrite;
  int uid;
  int higherUser = 0;  /* True if user being edited is SETUP and the */
                       /* user doing the editing is ADMIN.  Disallow editing */

** Show a menu of available log renderings accessible to an administrator, 
  /* Must have ADMIN privleges to access this page
  */
** together with a succinct explanation of each.
**
  login_check_credentials();
  if( !g.okAdmin ){ login_needed(); return; }

** This page is only accessible by administrators.
  /* Check to see if an ADMIN user is trying to edit a SETUP account.
  ** Don't allow that.
  */
*/
  zId = PD("id", "0");
  uid = atoi(zId);
void setup_logmenu_page(void){
  if( zId && !g.okSetup && uid>0 ){
    char *zOldCaps;
    zOldCaps = db_text(0, "SELECT cap FROM user WHERE uid=%d",uid);
    higherUser = zOldCaps && strchr(zOldCaps,'s');
  }

  Blob desc;
  if( P("can") ){
    cgi_redirect("setup_ulist");
    return;
  }

  blob_init(&desc, 0, 0);
  /* If we have all the necessary information, write the new or
  ** modified user record.  After writing the user record, redirect
  ** to the page that displays a list of users.
  */
  doWrite = cgi_all("login","info","pw") && !higherUser;
  if( doWrite ){
    char zCap[50];
    int i = 0;
    int aa = P("aa")!=0;
    int ab = P("ab")!=0;
    int ad = P("ad")!=0;
    int ae = P("ae")!=0;
    int ai = P("ai")!=0;
    int aj = P("aj")!=0;
    int ak = P("ak")!=0;
    int an = P("an")!=0;
    int ao = P("ao")!=0;
    int ap = P("ap")!=0;
    int ar = P("ar")!=0;
    int as = g.okSetup && P("as")!=0;
    int aw = P("aw")!=0;
    int ac = P("ac")!=0;
    int af = P("af")!=0;
    int am = P("am")!=0;
    int ah = P("ah")!=0;
    int ag = P("ag")!=0;
    int at = P("at")!=0;
    int au = P("au")!=0;
    int av = P("av")!=0;
    int az = P("az")!=0;
    if( aa ){ zCap[i++] = 'a'; }
    if( ab ){ zCap[i++] = 'b'; }
    if( ac ){ zCap[i++] = 'c'; }
    if( ad ){ zCap[i++] = 'd'; }
    if( ae ){ zCap[i++] = 'e'; }
    if( af ){ zCap[i++] = 'f'; }
    if( ah ){ zCap[i++] = 'h'; }
    if( ag ){ zCap[i++] = 'g'; }
    if( ai ){ zCap[i++] = 'i'; }
    if( aj ){ zCap[i++] = 'j'; }
    if( ak ){ zCap[i++] = 'k'; }
    if( am ){ zCap[i++] = 'm'; }
    if( an ){ zCap[i++] = 'n'; }
    if( ao ){ zCap[i++] = 'o'; }
    if( ap ){ zCap[i++] = 'p'; }
    if( ar ){ zCap[i++] = 'r'; }
    if( as ){ zCap[i++] = 's'; }
    if( at ){ zCap[i++] = 't'; }
    if( au ){ zCap[i++] = 'u'; }
    if( av ){ zCap[i++] = 'v'; }
    if( aw ){ zCap[i++] = 'w'; }
    if( az ){ zCap[i++] = 'z'; }

    zCap[i] = 0;
    zPw = P("pw");
    zLogin = P("login");
    if( isValidPwString(zPw) ){
      zPw = sha1_shared_secret(zPw, zLogin);
    }else{
      zPw = db_text(0, "SELECT pw FROM user WHERE uid=%d", uid);
    }

    if( uid>0 &&
        db_exists("SELECT 1 FROM user WHERE login=%Q AND uid!=%d", zLogin, uid)
    ){
  /* Administrator access only */
  login_check_credentials();
  if( !g.perm.Admin ){
      style_header("User Creation Error");
      @ <font color="red">Login "%h(zLogin)" is already used by a different
    login_needed(0);
      @ user.</font>
      @
      @ <p><a href="setup_uedit?id=%d(uid)">[Bummer]</a></p>
      style_footer();
      return;
    }
    return;
  }
    login_verify_csrf_secret();
    db_multi_exec(
       "REPLACE INTO user(uid,login,info,pw,cap) "
       "VALUES(nullif(%d,0),%Q,%Q,%Q,'%s')",
      uid, P("login"), P("info"), zPw, zCap
    );
    cgi_redirect("setup_ulist");
  style_header("Log Menu");
  @ <table border="0" cellspacing="3">
  setup_menu_entry("Admin Log", "admin_log",
    "The admin log records configuration changes to the repository.\n"
    "The admin log is stored in the \"admin_log\" table of the repository.\n"
  );
  setup_menu_entry("Artifact Log", "rcvfromlist",
    return;
  }

  /* Load the existing information about the user, if any
    "The artifact log records when new content is added to the repository.\n"
    "The time and date and origin of the new content is entered into the\n"
    "Log.  The artifact log is always on and is stored in the \"rcvfrom\"\n"
    "table of the repository.\n"
  */
  zLogin = "";
  zInfo = "";
  zCap = "";
  zPw = "";
  oaa = oab = oac = oad = oae = oaf = oag = oah = oai = oaj = oak = oam =
        oan = oao = oap = oar = oas = oat = oau = oav = oaw = oaz = "";
  if( uid ){
  );
    zLogin = db_text("", "SELECT login FROM user WHERE uid=%d", uid);
    zInfo = db_text("", "SELECT info FROM user WHERE uid=%d", uid);
    zCap = db_text("", "SELECT cap FROM user WHERE uid=%d", uid);
    zPw = db_text("", "SELECT pw FROM user WHERE uid=%d", uid);
    if( strchr(zCap, 'a') ) oaa = " checked";
    if( strchr(zCap, 'b') ) oab = " checked";
    if( strchr(zCap, 'c') ) oac = " checked";
    if( strchr(zCap, 'd') ) oad = " checked";
    if( strchr(zCap, 'e') ) oae = " checked";
    if( strchr(zCap, 'f') ) oaf = " checked";
    if( strchr(zCap, 'g') ) oag = " checked";
    if( strchr(zCap, 'h') ) oah = " checked";
    if( strchr(zCap, 'i') ) oai = " checked";
    if( strchr(zCap, 'j') ) oaj = " checked";
    if( strchr(zCap, 'k') ) oak = " checked";
    if( strchr(zCap, 'm') ) oam = " checked";
    if( strchr(zCap, 'n') ) oan = " checked";
    if( strchr(zCap, 'o') ) oao = " checked";
    if( strchr(zCap, 'p') ) oap = " checked";
    if( strchr(zCap, 'r') ) oar = " checked";
    if( strchr(zCap, 's') ) oas = " checked";
    if( strchr(zCap, 't') ) oat = " checked";
    if( strchr(zCap, 'u') ) oau = " checked";
    if( strchr(zCap, 'v') ) oav = " checked";
    if( strchr(zCap, 'w') ) oaw = " checked";
    if( strchr(zCap, 'z') ) oaz = " checked";
  }


  blob_appendf(&desc,
  /* figure out inherited permissions */
  memset(inherit, 0, sizeof(inherit));
  if( strcmp(zLogin, "developer") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='developer'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] = "<font color=\"red\">&bull;</font>";
    }
    free(z2);
    "The error log is a separate text file to which warning and error\n"
    "messages are appended.  A single error log can and often is shared\n"
    "across multiple repositories.\n"
  }
  if( strcmp(zLogin, "reader") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='reader'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] = "<font color=\"black\">&bull;</font>";
    }
    free(z2);
  );
  }
  if( strcmp(zLogin, "anonymous") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='anonymous'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] = "<font color=\"blue\">&bull;</font>";
    }
    free(z2);
  }
  if( strcmp(zLogin, "nobody") ){
  if( g.zErrlog==0 || fossil_strcmp(g.zErrlog,"-")==0 ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='nobody'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] = "<font color=\"green\">&bull;</font>";
    }
    free(z2);
  }

    blob_appendf(&desc,"The error log is disabled for this repository.");
  /* Begin generating the page
  */
  style_submenu_element("Cancel", "Cancel", "setup_ulist");
  if( uid ){
    style_header(mprintf("Edit User %h", zLogin));
  }else{
    style_header("Add A New User");
    blob_appendf(&desc,"In this repository, the error log is in the file"
       "named \"%s\".", g.zErrlog);
  }
  @ <table align="left" hspace="20" vspace="10"><tr><td>
  setup_menu_entry("Error Log", "errorlog", blob_str(&desc));
  @ <form action="%s(g.zPath)" method="POST">
  login_insert_csrf_secret();
  @ <table>
  @ <tr>
  @   <td align="right"><nobr>User ID:</nobr></td>
  if( uid ){
    @   <td>%d(uid) <input type="hidden" name="id" value="%d(uid)"></td>
  }else{
  blob_reset(&desc);
    @   <td>(new user)<input type="hidden" name="id" value=0></td>
  }

  @ </tr>
  @ <tr>
  @   <td align="right"><nobr>Login:</nobr></td>
  @   <td><input type="text" name="login" value="%h(zLogin)"></td>
  @ </tr>
  @ <tr>
  @   <td align="right"><nobr>Contact&nbsp;Info:</nobr></td>
  @   <td><input type="text" name="info" size=40 value="%h(zInfo)"></td>
  @ </tr>
  @ <tr>
  @   <td align="right" valign="top">Capabilities:</td>
  @   <td>
#define B(x) inherit[x]
  if( g.okSetup ){
  setup_menu_entry("Panic Log", "paniclog",
    @    <input type="checkbox" name="as"%s(oas)/>%s(B('s'))Setup<br>
  }
  @    <input type="checkbox" name="aa"%s(oaa)/>%s(B('a'))Admin<br>
  @    <input type="checkbox" name="ad"%s(oad)/>%s(B('d'))Delete<br>
  @    <input type="checkbox" name="ae"%s(oae)/>%s(B('e'))Email<br>
  @    <input type="checkbox" name="ap"%s(oap)/>%s(B('p'))Password<br>
  @    <input type="checkbox" name="ai"%s(oai)/>%s(B('i'))Check-In<br>
  @    <input type="checkbox" name="ao"%s(oao)/>%s(B('o'))Check-Out<br>
  @    <input type="checkbox" name="ah"%s(oah)/>%s(B('h'))History<br>
  @    <input type="checkbox" name="au"%s(oau)/>%s(B('u'))Reader<br>
  @    <input type="checkbox" name="av"%s(oav)/>%s(B('v'))Developer<br>
  @    <input type="checkbox" name="ag"%s(oag)/>%s(B('g'))Clone<br>
  @    <input type="checkbox" name="aj"%s(oaj)/>%s(B('j'))Read Wiki<br>
  @    <input type="checkbox" name="af"%s(oaf)/>%s(B('f'))New Wiki<br>
  @    <input type="checkbox" name="am"%s(oam)/>%s(B('m'))Append Wiki<br>
  @    <input type="checkbox" name="ak"%s(oak)/>%s(B('k'))Write Wiki<br>
  @    <input type="checkbox" name="ab"%s(oab)/>%s(B('b'))Attachments<br>
  @    <input type="checkbox" name="ar"%s(oar)/>%s(B('r'))Read Ticket<br>
  @    <input type="checkbox" name="an"%s(oan)/>%s(B('n'))New Ticket<br>
  @    <input type="checkbox" name="ac"%s(oac)/>%s(B('c'))Append Ticket<br>
  @    <input type="checkbox" name="aw"%s(oaw)/>%s(B('w'))Write Ticket<br>
  @    <input type="checkbox" name="at"%s(oat)/>%s(B('t'))Ticket Report<br>
  @    <input type="checkbox" name="az"%s(oaz)/>%s(B('z'))Download Zip
  @   </td>
  @ </tr>
  @ <tr>
  @   <td align="right">Password:</td>
  if( zPw[0] ){
    "The panic log is a filtering of the Error Log that shows only the\n"
    "most important messages - assertion faults, segmentation faults, and\n"
    "similar malfunctions."
  );
    /* Obscure the password for all users */
    @   <td><input type="password" name="pw" value="**********"></td>
  }else{
    /* Show an empty password as an empty input field */
    @   <td><input type="password" name="pw" value=""></td>
  }
  @ </tr>
  if( !higherUser ){
    @ <tr>
    @   <td>&nbsp</td>
    @   <td><input type="submit" name="submit" value="Apply Changes">
    @ </tr>
  }
  @ </table></td></tr></table>
  @ <h2>Privileges And Capabilities:</h2>
  @ <ul>
  if( higherUser ){
    @ <li><p><font color="blue"><b>
    @ User %h(zLogin) has Setup privileges and you only have Admin privileges
    @ so you are not permitted to make changes to %h(zLogin).
    @ </b></font></p></li>
    @

  }
  @ <li><p>
  @ The <b>Setup</b> user can make arbitrary configuration changes.
  @ An <b>Admin</b> user can add other users and change user privileges
  setup_menu_entry("User Log", "user_log",
    "The user log is a record of login attempts.  The user log is stored\n"
  @ and reset user passwords.  Both automatically get all other privileges
  @ listed below.  Use these two settings with discretion.
  @ </p></li>
  @
  @ <li><p>
  @ The "<font color="green"><big>&bull;</big></font>" mark indicates
  @ the privileges of "nobody" that are available to all users
  @ regardless of whether or not they are logged in.
  @ </p></li>
  @
  @ <li><p>
  @ The "<font color="blue"><big>&bull;</big></font>" mark indicates
  @ the privileges of "anonymous" that are inherited by all logged-in users.
  @ </p></li>
  @
  @ <li><p>
  @ The "<font color="red"><big>&bull;</big></font>" mark indicates
  @ the privileges of "developer" that are inherited by all users with
  @ the <b>Developer</b> privilege.
    "in the \"accesslog\" table of the respository.\n"
  @ </p></li>
  @
  );

  @ <li><p>
  @ The "<font color="black"><big>&bull;</big></font>" mark indicates
  @ the privileges of "reader" that are inherited by all users with
  @ the <b>Reader</b> privilege.
  @ </p></li>
  @
  @ <li><p>
  @ The <b>Delete</b> privilege give the user the ability to erase
  @ wiki, tickets, and attachments that have been added by anonymous
  @ users.  This capability is intended for deletion of spam.  The
  @ delete capability is only in effect for 24 hours after the item
  @ is first posted.  The Setup user can delete anything at any time.
  @ </p></li>
  @
  @ <li><p>
  @ The <b>History</b> privilege allows a user to see most hyperlinks.
  @ This is recommended ON for most logged-in users but OFF for
  @ user "nobody" to avoid problems with spiders trying to walk every
  @ historical version of every baseline and file.
  @ </p></li>
  @
  @ <li><p>
  @ The <b>Zip</b> privilege allows a user to see the "download as ZIP"
  @ hyperlink and permits access to the <tt>/zip</tt> page.  This allows
  @ users to download ZIP archives without granting other rights like
  @ <b>Read</b> or <b>History</b>.  This privilege is recommended for
  @ user <b>nobody</b> so that automatic package downloaders can obtain
  @ the sources without going through the login procedure.
  @ </p></li>
  @
  @ <li><p>
  @ The <b>Check-in</b> privilege allows remote users to "push".
  @ The <b>Check-out</b> privilege allows remote users to "pull".
  @ The <b>Clone</b> privilege allows remote users to "clone".
  @ </li><p>
  @
  @ <li><p>
  setup_menu_entry("Hack Log", "hacklog",
    "All 418 hack attempts"
  );
  @ The <b>Read Wiki</b>, <b>New Wiki</b>, <b>Append Wiki</b>, and
  @ <b>Write Wiki</b> privileges control access to wiki pages.  The
  @ <b>Read Ticket</b>, <b>New Ticket</b>, <b>Append Ticket</b>, and
  @ <b>Write Ticket</b> privileges control access to trouble tickets.
  @ The <b>Ticket Report</b> privilege allows the user to create or edit
  @ ticket report formats.
  @ </p></li>
  @

  @ <li><p>
  @ Users with the <b>Password</b> privilege are allowed to change their
  @ own password.  Recommended ON for most users but OFF for special
  @ users "developer", "anonymous", and "nobody".
  @ </p></li>
  @
  @ <li><p>
  @ The <b>EMail</b> privilege allows the display of sensitive information
  @ such as the email address of users and contact information on tickets.
  @ Recommended OFF for "anonymous" and for "nobody" but ON for
  @ "developer".
  @ </p></li>
  @
  @ <li><p>
  @ The <b>Attachment</b> privilege is needed in order to add attachments
  @ to tickets or wiki.  Write privilege on the ticket or wiki is also
  @ required.</p></li>
  @
  @ <li><p>
  @ Login is prohibited if the password is an empty string.
  @ </p></li>
  @ </ul>
  @
  @ <h2>Special Logins</h2>
  setup_menu_entry("Non-Hack Log", "hacklog?not",
  @
  @ <ul>
  @ <li><p>
  @ No login is required for user "<b>nobody</b>".  The capabilities
  @ of the <b>nobody</b> user are inherited by all users, regardless of
  @ whether or not they are logged in.  To disable universal access
  @ to the repository, make sure no user named "<b>nobody</b>" exists or
  @ that the <b>nobody</b> user has no capabilities enabled.
    "All log messages that are not hack attempts"
  @ The password for <b>nobody</b> is ignore.  To avoid problems with
  @ spiders overloading the server, it is recommended
  @ that the 'h' (History) capability be turned off for the <b>nobody</b>
  @ user.
  @ </p></li>
  @
  );

  @ <li><p>
  @ Login is required for user "<b>anonymous</b>" but the password
  @ is displayed on the login screen beside the password entry box
  @ so anybody who can read should be able to login as anonymous.
  @ On the other hand, spiders and web-crawlers will typically not
  @ be able to login.  Set the capabilities of the anonymous user
  @ to things that you want any human to be able to do, but not any
  @ spider.  Every other logged-in user inherits the privileges of
  @ <b>anonymous</b>.
  @ </p></li>
  @

  @ <li><p>
  @ The "<b>developer</b>" user is intended as a template for trusted users
  @ with check-in privileges.  When adding new trusted users, simply
  @ select the <b>Developer</b> privilege to cause the new user to inherit
  @ all privileges of the "developer" user.  Similarly, the "<b>reader</b>"
  @ user is a template for users who are allowed more access than anonymous,
  @ but less than a developer.
  @ </p></li>
  @ </ul>
  @ </table>
  @ </form>
  style_footer();
  style_finish_page();
}


/*
** Generate a checkbox for an attribute.
*/
static void onoff_attribute(
void onoff_attribute(
  const char *zLabel,   /* The text label on the checkbox */
  const char *zVar,     /* The corresponding row in the VAR table */
  const char *zVar,     /* The corresponding row in the CONFIG table */
  const char *zQParm,   /* The query parameter */
  int dfltVal           /* Default value if VAR table entry does not exist */
  int dfltVal,          /* Default value if CONFIG table entry does not exist */
  int disabled          /* 1 if disabled */
){
  const char *zQ = P(zQParm);
  int iVal = db_get_boolean(zVar, dfltVal);
  if( zQ==0 && P("submit") ){
  if( zQ==0 && !disabled && P("submit") ){
    zQ = "off";
  }
  if( zQ ){
    int iQ = strcmp(zQ,"on")==0 || atoi(zQ);
    if( iQ!=iVal ){
      login_verify_csrf_secret();
      db_set(zVar, iQ ? "1" : "0", 0);
    int iQ = fossil_strcmp(zQ,"on")==0 || atoi(zQ);
    if( iQ!=iVal && cgi_csrf_safe(2) ){
      db_protect_only(PROTECT_NONE);
      db_set(zVar/*works-like:"x"*/, iQ ? "1" : "0", 0);
      db_protect_pop();
      setup_incr_cfgcnt();
      admin_log("Set option [%q] to [%q].",
                zVar, iQ ? "on" : "off");
      iVal = iQ;
    }
  }
  @ <label><input type="checkbox" name="%s(zQParm)" \
  @ aria-label="%h(zLabel[0]?zLabel:zQParm)" \
  if( iVal ){
    @ <input type="checkbox" name="%s(zQParm)" checked><b>%s(zLabel)</b></input>
  }else{
    @ checked="checked" \
  }
  if( disabled ){
    @ <input type="checkbox" name="%s(zQParm)"><b>%s(zLabel)</b></input>
    @ disabled="disabled" \
  }
  @ > <b>%s(zLabel)</b></label>
}

/*
** Generate an entry box for an attribute.
*/
void entry_attribute(
  const char *zLabel,   /* The text label on the entry box */
  int width,            /* Width of the entry box */
  const char *zVar,     /* The corresponding row in the VAR table */
  const char *zVar,     /* The corresponding row in the CONFIG table */
  const char *zQParm,   /* The query parameter */
  char *zDflt     /* Default value if VAR table entry does not exist */
  const char *zDflt,    /* Default value if CONFIG table entry does not exist */
  int disabled          /* 1 if disabled */
){
  const char *zVal = db_get(zVar, zDflt);
  const char *zQ = P(zQParm);
  if( zQ && strcmp(zQ,zVal)!=0 ){
    login_verify_csrf_secret();
    db_set(zVar, zQ, 0);
  if( zQ && fossil_strcmp(zQ,zVal)!=0 && cgi_csrf_safe(2) ){
    const int nZQ = (int)strlen(zQ);
    setup_incr_cfgcnt();
    db_protect_only(PROTECT_NONE);
    db_set(zVar/*works-like:"x"*/, zQ, 0);
    db_protect_pop();
    admin_log("Set entry_attribute %Q to: %.*s%s",
              zVar, 20, zQ, (nZQ>20 ? "..." : ""));
    zVal = zQ;
  }
  @ <input aria-label="%h(zLabel[0]?zLabel:zQParm)" type="text" \
  @ <input type="text" name="%s(zQParm)" value="%h(zVal)" size="%d(width)">
  @ <b>%s(zLabel)</b>
  @ id="%s(zQParm)" name="%s(zQParm)" value="%h(zVal)" size="%d(width)" \
  if( disabled ){
    @ disabled="disabled" \
  }
  @ > <b>%s(zLabel)</b>
}

/*
** Generate a text box for an attribute.
*/
static void textarea_attribute(
const char *textarea_attribute(
  const char *zLabel,   /* The text label on the textarea */
  int rows,             /* Rows in the textarea */
  int cols,             /* Columns in the textarea */
  const char *zVar,     /* The corresponding row in the VAR table */
  const char *zVar,     /* The corresponding row in the CONFIG table */
  const char *zQP,      /* The query parameter */
  const char *zDflt,    /* Default value if CONFIG table entry does not exist */
  int disabled          /* 1 if the textarea should  not be editable */
){
  const char *z = db_get(zVar, zDflt);
  const char *zQ = P(zQP);
  if( zQ && !disabled && fossil_strcmp(zQ,z)!=0 && cgi_csrf_safe(2) ){
    const int nZQ = (int)strlen(zQ);
    db_protect_only(PROTECT_NONE);
    db_set(zVar/*works-like:"x"*/, zQ, 0);
    db_protect_pop();
    setup_incr_cfgcnt();
    admin_log("Set textarea_attribute %Q to: %.*s%s",
              zVar, 20, zQ, (nZQ>20 ? "..." : ""));
    z = zQ;
  }
  if( rows>0 && cols>0 ){
    @ <textarea id="id%s(zQP)" name="%s(zQP)" rows="%d(rows)" \
    @ aria-label="%h(zLabel[0]?zLabel:zQP)" \
    if( disabled ){
      @ disabled="disabled" \
    }
    @ cols="%d(cols)">%h(z)</textarea>
    if( *zLabel ){
      @ <span class="textareaLabel">%s(zLabel)</span>
    }
  }
  return z;
}

/*
** Generate a text box for an attribute.
*/
void multiple_choice_attribute(
  const char *zLabel,   /* The text label on the menu */
  const char *zVar,     /* The corresponding row in the CONFIG table */
  const char *zQP,      /* The query parameter */
  const char *zDflt     /* Default value if VAR table entry does not exist */
  const char *zDflt,    /* Default value if CONFIG table entry does not exist */
  int nChoice,          /* Number of choices */
  const char *const *azChoice /* Choices in pairs (VAR value, Display) */
){
  const char *z = db_get(zVar, (char*)zDflt);
  const char *z = db_get(zVar, zDflt);
  const char *zQ = P(zQP);
  int i;
  if( zQ && strcmp(zQ,z)!=0 ){
  if( zQ && fossil_strcmp(zQ,z)!=0 && cgi_csrf_safe(2) ){
    login_verify_csrf_secret();
    db_set(zVar, zQ, 0);
    const int nZQ = (int)strlen(zQ);
    db_unprotect(PROTECT_ALL);
    db_set(zVar/*works-like:"x"*/, zQ, 0);
    setup_incr_cfgcnt();
    db_protect_pop();
    admin_log("Set multiple_choice_attribute %Q to: %.*s%s",
              zVar, 20, zQ, (nZQ>20 ? "..." : ""));
    z = zQ;
  }
  if( rows>0 && cols>0 ){
    @ <textarea name="%s(zQP)" rows="%d(rows)" cols="%d(cols)">%h(z)</textarea>
    @ <b>%s(zLabel)</b>
  }
  @ <select aria-label="%h(zLabel)" size="1" name="%s(zQP)" id="id%s(zQP)">
  for(i=0; i<nChoice*2; i+=2){
    const char *zSel = fossil_strcmp(azChoice[i],z)==0 ? " selected" : "";
    @ <option value="%h(azChoice[i])"%s(zSel)>%h(azChoice[i+1])</option>
  }
  @ </select> <b>%h(zLabel)</b>
}

/*
** Insert code into the current page that allows the user to configure
** auto-hyperlink related robot defense settings.
*/
static void addAutoHyperlinkSettings(void){
  static const char *const azDefenseOpts[] = {
    "0", "Off",
    "2", "UserAgent only",
    "1", "UserAgent and Javascript",
  };
  multiple_choice_attribute(
     "Enable hyperlinks base on User-Agent and/or Javascript",
     "auto-hyperlink", "autohyperlink", "1",
     count(azDefenseOpts)/2, azDefenseOpts);
  @ <p>Enable hyperlinks (the equivalent of the "h" permission) for all users,
  @ including user "nobody", as long as the User-Agent string in the
  @ HTTP header indicates that the request is coming from an actual human
  @ being.  If this setting is "UserAgent only" (2) then the
  @ UserAgent string is the only factor considered.  If the value of this
  @ setting is "UserAgent And Javascript" (1) then Javascript is added that
  @ runs after the page loads and fills in the href= values of &lt;a&gt;
  @ elements.  In either case, &lt;a&gt; tags are only generated if the
  @ UserAgent string indicates that the request is coming from a human and
  @ not a robot.
  @
  @ <p>This setting is designed to give easy access to humans while
  @ keeping out robots.
  @ You do not normally want a robot to walk your entire repository because
  @ if it does, your server will end up computing diffs and annotations for
  @ every historical version of every file and creating ZIPs and tarballs of
  @ every historical check-in, which can use a lot of CPU and bandwidth
  @ even for relatively small projects.</p>
  @
  @ <p>The "UserAgent and Javascript" value for this setting provides
  @ superior protection from robots.  However, that setting also prevents
  @ the visited/unvisited colors on hyperlinks from displaying correctly
  @ on Safari-derived browsers.  (Chrome and Firefox work fine.)  Since
  @ Safari is the underlying rendering engine on all iPhones and iPads,
  @ this means that hyperlink visited/unvisited colors will not operate
  @ on those platforms when "UserAgent and Javascript" is selected.</p>
  @
  @ <p>Additional parameters that control the behavior of Javascript:</p>
  @ <blockquote>
  entry_attribute("Delay in milliseconds before enabling hyperlinks", 5,
                  "auto-hyperlink-delay", "ah-delay", "50", 0);
  @ <br>
  onoff_attribute("Also require a mouse event before enabling hyperlinks",
                  "auto-hyperlink-mouseover", "ahmo", 0, 0);
  @ </blockquote>
  @ <p>For maximum robot defense, "Delay" should be at least 50 milliseconds
  @ and "require a mouse event" should be turned on.  These values only come
  @ into play when the main auto-hyperlink settings is 2 ("UserAgent and
  @ Javascript").</p>
  @
  @ <p>To see if Javascript-base hyperlink enabling mechanism is working,
  @ visit the <a href="%R/test_env">/test_env</a> page (from a separate
  @ web browser that is not logged in, even as "anonymous") and verify
  @ that the "g.jsHref" value is "1".</p>
  @ <p>(Properties: "auto-hyperlink", "auto-hyperlink-delay", and
  @ "auto-hyperlink-mouseover"")</p>
}

/*
** WEBPAGE: setup_robot
**
** Settings associated with defense against robots.  Requires setup privilege.
*/
void setup_robots(void){
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;

  }
  style_set_current_feature("setup");
  style_header("Robot Defense Settings");
  db_begin_transaction();
  @ <p>A Fossil website can have billions of pages in its tree, even for a
  @ modest project.  Many of those pages (examples: diffs and tarballs)
  @ might be expensive to compute. A robot that tries to walk the entire
  @ website can present a crippling CPU and bandwidth load.
  @
  @ <p>The settings on this page are intended to help site administrators
  @ defend the site against robots.
  @
  @ <form action="%R/setup_robot" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="submit"  name="submit" value="Apply Changes"></p>
  @ <hr>
  addAutoHyperlinkSettings();

  @ <hr>
  entry_attribute("Server Load Average Limit", 11, "max-loadavg", "mxldavg",
                  "0.0", 0);
  @ <p>Some expensive operations (such as computing tarballs, zip archives,
  @ or annotation/blame pages) are prohibited if the load average on the host
  @ computer is too large.  Set the threshold for disallowing expensive
  @ computations here.  Set this to 0.0 to disable the load average limit.
  @ This limit is only enforced on Unix servers.  On Linux systems,
  @ access to the /proc virtual filesystem is required, which means this limit
  @ might not work inside a chroot() jail.
  @ (Property: "max-loadavg")</p>

  @ <hr>
  @ <p><b>Do not allow robots to make complex requests
  @ against the following pages.</b>
  @ <p> A "complex request" is an HTTP request that has one or more query
  @ parameters. Some robots will spend hours juggling around query parameters
  @ or even forging fake query parameters in an effort to discover new
  @ behavior or to find an SQL injection opportunity or similar.  This can
  @ waste hours of CPU time and gigabytes of bandwidth on the server.  A
  @ suggested value for this setting is:
  @ "<tt>timeline,*diff,vpatch,annotate,blame,praise,dir,tree</tt>".
  @ (Property: robot-restrict)
  @ <p>
  textarea_attribute("", 2, 80,
      "robot-restrict", "rbrestrict", "", 0);

  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </div></form>
  db_end_transaction(0);
  style_finish_page();
}

/*
** WEBPAGE: setup_access
**
** The access-control settings page.  Requires Setup privileges.
*/
void setup_access(void){
  static const char *const azRedirectOpts[] = {
    "0", "Off",
    "1", "Login Page Only",
    "2", "All Pages"
  };
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_set_current_feature("setup");
  style_header("Access Control Settings");
  db_begin_transaction();
  @ <form action="%s(g.zBaseURL)/setup_access" method="POST">
  @ <form action="%R/setup_access" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="submit"  name="submit" value="Apply Changes"></p>
  @ <hr>
  multiple_choice_attribute("Redirect to HTTPS",
     "redirect-to-https", "redirhttps", "0",
     count(azRedirectOpts)/2, azRedirectOpts);
  @ <p>Force the use of HTTPS by redirecting to HTTPS when an
  @ unencrypted request is received.  This feature can be enabled
  @ for the Login page only, or for all pages.
  @ <p>Further details:  When enabled, this option causes the $secureurl TH1
  @ variable is set to an "https:" variant of $baseurl.  Otherwise,
  @ $secureurl is just an alias for $baseurl.
  @ (Property: "redirect-to-https".  "0" for off, "1" for Login page only,
  @ "2" otherwise.)
  @ <hr>
  onoff_attribute("Require password for local access",
     "localauth", "localauth", 0);
  @ <p>When enabled, the password sign-in is required for
  @ web access coming from 127.0.0.1.  When disabled, web access
  @ from 127.0.0.1 is allows without any login - the user id is selected
  @ from the ~/.fossil database. Password login is always required
  @ for incoming web connections on internet addresses other than
  @ 127.0.0.1.</p></li>

     "localauth", "localauth", 0, 0);
  @ <p>When enabled, the password sign-in is always required for
  @ web access.  When disabled, unrestricted web access from 127.0.0.1
  @ is allowed for the <a href="%R/help/ui">fossil ui</a> command or
  @ from the <a href="%R/help/server">fossil server</a>,
  @ <a href="%R/help/http">fossil http</a> commands when the
  @ "--localauth" command line options is used, or from the
  @ <a href="%R/help/cgi">fossil cgi</a> if a line containing
  @ the word "localauth" appears in the CGI script.
  @
  @ <p>A password is always required if any one or more
  @ of the following are true:
  @ <ol>
  @ <li> This button is checked
  @ <li> The inbound TCP/IP connection is not from 127.0.0.1
  @ <li> The server is started using either of the
  @ <a href="%R/help/server">fossil server</a> or
  @ <a href="%R/help/server">fossil http</a> commands
  @ without the "--localauth" option.
  @ <li> The server is started from CGI without the "localauth" keyword
  @ in the CGI script.
  @ </ol>
  @ (Property: "localauth")
  @
  @ <hr>
  onoff_attribute("Enable /test_env",
     "test_env_enable", "test_env_enable", 0, 0);
  @ <p>When enabled, the %h(g.zBaseURL)/test_env URL is available to all
  @ users.  When disabled (the default) only users Admin and Setup can visit
  @ the /test_env page.
  @ (Property: "test_env_enable")
  @ </p>
  @
  @ <hr>
  onoff_attribute("Enable /artifact_stats",
     "artifact_stats_enable", "artifact_stats_enable", 0, 0);
  @ <p>When enabled, the %h(g.zBaseURL)/artifact_stats URL is available to all
  @ users.  When disabled (the default) only users with check-in privilege may
  @ access the /artifact_stats page.
  @ (Property: "artifact_stats_enable")
  @ </p>
  @
  @ <hr>
  onoff_attribute("Allow REMOTE_USER authentication",
     "remote_user_ok", "remote_user_ok", 0);
     "remote_user_ok", "remote_user_ok", 0, 0);
  @ <p>When enabled, if the REMOTE_USER environment variable is set to the
  @ login name of a valid user and no other login credentials are available,
  @ then the REMOTE_USER is accepted as an authenticated user.
  @ (Property: "remote_user_ok")
  @ </p></li>

  @ </p>
  @
  @ <hr>
  onoff_attribute("Allow HTTP_AUTHENTICATION authentication",
     "http_authentication_ok", "http_authentication_ok", 0, 0);
  @ <p>When enabled, allow the use of the HTTP_AUTHENTICATION environment
  @ variable or the "Authentication:" HTTP header to find the username and
  @ password. This is another way of supporting Basic Authentication.
  @ (Property: "http_authentication_ok")
  @ </p>
  @
  @ <hr>
  entry_attribute("Login expiration time", 6, "cookie-expire", "cex", "8766");
  entry_attribute("Login expiration time", 6, "cookie-expire", "cex",
                  "8766", 0);
  @ <p>The number of hours for which a login is valid.  This must be a
  @ positive number.  The default is 8760 hours which is approximately equal
  @ to a year.</p>
  @ positive number.  The default is 8766 hours which is approximately equal
  @ to a year.
  @ (Property: "cookie-expire")</p>

  @ <hr>
  entry_attribute("Download packet limit", 10, "max-download", "mxdwn",
                  "5000000");
                  "5000000", 0);
  @ <p>Fossil tries to limit out-bound sync, clone, and pull packets
  @ to this many bytes, uncompressed.  If the client requires more data
  @ than this, then the client will issue multiple HTTP requests.
  @ Values below 1 million are not recommended.  5 million is a
  @ reasonable number.</p>
  @ reasonable number.  (Property: "max-download")</p>

  @ <hr>
  entry_attribute("Download time limit", 11, "max-download-time", "mxdwnt",
                  "30", 0);

  @ <p>Fossil tries to spend less than this many seconds gathering
  @ the out-bound data of sync, clone, and pull packets.
  @ If the client request takes longer, a partial reply is given similar
  @ to the download packet limit. 30s is a reasonable default.
  @ (Property: "max-download-time")</p>

  @ <a id="slal"></a>
  @ <hr>
  entry_attribute("Server Load Average Limit", 11, "max-loadavg", "mxldavg",
                  "0.0", 0);
  @ <p>Some expensive operations (such as computing tarballs, zip archives,
  @ or annotation/blame pages) are prohibited if the load average on the host
  @ computer is too large.  Set the threshold for disallowing expensive
  @ computations here.  Set this to 0.0 to disable the load average limit.
  @ This limit is only enforced on Unix servers.  On Linux systems,
  @ access to the /proc virtual filesystem is required, which means this limit
  @ might not work inside a chroot() jail.
  @ (Property: "max-loadavg")</p>

  /* Add the auto-hyperlink settings controls.  These same controls
  ** are also accessible from the /setup_robot page.
  */
  @ <hr>
  addAutoHyperlinkSettings();

  @ <hr>
  onoff_attribute("Require a CAPTCHA if not logged in",
                  "require-captcha", "reqcapt", 1, 0);
  @ <p>Require a CAPTCHA for edit operations (appending, creating, or
  @ editing wiki or tickets or adding attachments to wiki or tickets)
  @ for users who are not logged in. (Property: "require-captcha")</p>

  @ <hr>
  entry_attribute("Public pages", 30, "public-pages",
                  "pubpage", "", 0);
  @ <p>A comma-separated list of glob patterns for pages that are accessible
  @ without needing a login and using the privileges given by the
  @ "Default privileges" setting below.
  @
  @ <p>Example use case: Set this field to "/doc/trunk/www/*" and set
  @ the "Default privileges" to include the "o" privilege
  @ to give anonymous users read-only permission to the
  @ latest version of the embedded documentation in the www/ folder without
  @ allowing them to see the rest of the source code.
  @ (Property: "public-pages")
  @ </p>

  @ <hr>
  onoff_attribute("Allow users to register themselves",
                  "self-register", "selfreg", 0, 0);
  @ <p>Allow users to register themselves on the /register webpage.
  @ A self-registration creates a new entry in the USER table and
  @ perhaps also in the SUBSCRIBER table if email notification is
  @ enabled.
  @ (Property: "self-register")</p>

  @ <hr>
  onoff_attribute("Allow users to reset their own passwords",
                  "self-pw-reset", "selfpw", 0, 0);
  @ <p>Allow users to request that an email contains a hyperlink to a
  @ password reset page be sent to their email address of record.  This
  @ enables forgetful users to recover their forgotten passwords without
  @ administrator intervention.
  @ (Property: "self-pw-reset")</p>

  @ <hr>
  onoff_attribute("Email verification required for self-registration",
                  "selfreg-verify", "sfverify", 0, 0);
  @ <p>If enabled, self-registration creates a new entry in the USER table
  @ with only capabilities "7".  The default user capabilities are not
  @ added until the email address associated with the self-registration
  @ has been verified. This setting only makes sense if
  @ email notifications are enabled.
  @ (Property: "selfreg-verify")</p>

  @ <hr>
  onoff_attribute("Allow anonymous subscriptions",
                  "anon-subscribe", "anonsub", 1, 0);
  @ <p>If disabled, email notification subscriptions are only allowed
  @ for users with a login.  If Nobody or Anonymous visit the /subscribe
  @ page, they are redirected to /register or /login.
  @ (Property: "anon-subscribe")</p>

  @ <hr>
  entry_attribute("Authorized subscription email addresses", 35,
                  "auth-sub-email", "asemail", "", 0);
  @ <p>This is a comma-separated list of GLOB patterns that specify
  @ email addresses that are authorized to subscriptions.  If blank
  @ (the usual case), then any email address can be used to self-register.
  @ This setting is used to limit subscriptions to members of a particular
  @ organization or group based on their email address.
  @ (Property: "auth-sub-email")</p>

  @ <hr>
  entry_attribute("Default privileges", 10, "default-perms",
                  "defaultperms", "u", 0);
  @ <p>Permissions given to users that... <ul><li>register themselves using
  @ the self-registration procedure (if enabled), or <li>access "public"
  @ pages identified by the public-pages glob pattern above, or <li>
  @ are users newly created by the administrator.</ul>
  @ <p>Recommended value: "u" for Reader.
  @ <a href="%R/setup_ucap_list">Capability Key</a>.
  @ (Property: "default-perms")
  @ </p>

  @ <hr>
  onoff_attribute("Show javascript button to fill in CAPTCHA",
                  "auto-captcha", "autocaptcha", 0);
                  "auto-captcha", "autocaptcha", 0, 0);
  @ <p>When enabled, a button appears on the login screen for user
  @ "anonymous" that will automatically fill in the CAPTCHA password.
  @ This is less secure that forcing the user to do it manually, but is
  @ This is less secure than forcing the user to do it manually, but is
  @ probably secure enough and it is certainly more convenient for
  @ anonymous users.</p>
  @ anonymous users.  (Property: "auto-captcha")</p>

  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </form>
  @ </div></form>
  db_end_transaction(0);
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: setup_login_group
**
** Change how the current repository participates in a login
** group.
*/
void setup_login_group(void){
  const char *zGroup;
  char *zErrMsg = 0;
  Stmt q;
  Blob fullName;
  char *zSelfRepo;
  const char *zRepo = PD("repo", "");
  const char *zLogin = PD("login", "");
  const char *zPw = PD("pw", "");
  const char *zNewName = PD("newname", "New Login Group");

  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  file_canonical_name(g.zRepositoryName, &fullName, 0);
  zSelfRepo = fossil_strdup(blob_str(&fullName));
  blob_reset(&fullName);
  if( P("join")!=0 ){
    login_group_join(zRepo, 1, zLogin, zPw, zNewName, &zErrMsg);
  }else if( P("leave") ){
    login_group_leave(&zErrMsg);
  }else if( P("rotate") ){
    captcha_secret_rotate();
  }
  style_set_current_feature("setup");
  style_header("Login Group Configuration");
  if( zErrMsg ){
    @ <p class="generalError">%s(zErrMsg)</p>
  }
  zGroup = login_group_name();
  if( zGroup==0 ){
    @ <p>This repository (in the file named "%h(zSelfRepo)")
    @ is not currently part of any login-group.
    @ To join a login group, fill out the form below.</p>
    @
    @ <form action="%R/setup_login_group" method="post"><div>
    login_insert_csrf_secret();
    @ <blockquote><table border="0">
    @
    @ <tr><th align="right" id="rfigtj">Repository filename \
    @ in group to join:</th>
    @ <td width="5"></td><td>
    @ <input aria-labelledby="rfigtj" type="text" size="50" \
    @ value="%h(zRepo)" name="repo"></td></tr>
    @
    @ <tr><th align="right" id="lotar">Login on the above repo:</th>
    @ <td width="5"></td><td>
    @ <input aria-labelledby="lotar" type="text" size="20" \
    @ value="%h(zLogin)" name="login"></td></tr>
    @
    @ <tr><th align="right" id="lgpw">Password:</th>
    @ <td width="5"></td><td>
    @ <input aria-labelledby="lgpw" type="password" size="20" name="pw">\
    @ </td></tr>
    @
    @ <tr><th align="right" id="nolg">Name of login-group:</th>
    @ <td width="5"></td><td>
    @ <input aria-labelledby="nolg" type="text" size="30" \
    @ value="%h(zNewName)" name="newname">
    @ (only used if creating a new login-group).</td></tr>
    @
    @ <tr><td colspan="3" align="center">
    @ <input type="submit" value="Join" name="join"></td></tr>
    @ </table></blockquote></div></form>
  }else{
    int n = 0;
    @ <p>This repository (in the file "%h(zSelfRepo)")
    @ is currently part of the "<b>%h(zGroup)</b>" login group.
    @ Other repositories in that group are:</p>
    @ <table border="0" cellspacing="4">
    @ <tr><td colspan="2"><th align="left">Project Name<td>
    @ <th align="left">Repository File</tr>
    db_prepare(&q,
       "SELECT value,"
       "       (SELECT value FROM config"
       "         WHERE name=('peer-name-' || substr(x.name,11)))"
       "  FROM config AS x"
       " WHERE name GLOB 'peer-repo-*'"
       " ORDER BY value"
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zRepo = db_column_text(&q, 0);
      const char *zTitle = db_column_text(&q, 1);
      n++;
      @ <tr><td align="right">%d(n).</td><td width="4">
      @ <td>%h(zTitle)<td width="10"><td>%h(zRepo)</tr>
    }
    db_finalize(&q);
    @ </table>
    @
    @ <p><form action="%R/setup_login_group" method="post"><div>
    login_insert_csrf_secret();
    @ <p>To leave this login group press:
    @ <input type="submit" value="Leave Login Group" name="leave">
    @ <p>Setting a common captcha-secret on all repositories in the login-group
    @ allows anonymous logins for one repository in the login group to be used
    @ by all other repositories of the group within the same domain.  Warning:
    @ If a captcha dialog was painted before setting the common captcha-secret
    @ and the "Speak password for 'anonymous'" button is pressed afterwards,
    @ the spoken text will be incorrect.
    @ <input type="submit" name="rotate" value="Set common captcha-secret">
    @ </form></p>
  }
  @ <hr><h2>Implementation Details</h2>
  @ <p>The following are fields from the CONFIG table related to login-groups.
  @ </p>
  @ <table border='1' cellspacing="0" cellpadding="4"\
  @ class='sortable' data-column-types='ttt' data-init-sort='1'>
  @ <thead><tr>
  @ <th>Config.Name<th>Config.Value<th>Config.mtime</tr>
  @ </thead><tbody>
  db_prepare(&q, "SELECT name, value, datetime(mtime,'unixepoch') FROM config"
                 " WHERE name GLOB 'peer-*'"
                 "    OR name GLOB 'project-*'"
                 "    OR name GLOB 'login-group-*'"
                 " ORDER BY name");
  while( db_step(&q)==SQLITE_ROW ){
    @ <tr><td>%h(db_column_text(&q,0))</td>
    @ <td>%h(db_column_text(&q,1))</td>
    @ <td>%h(db_column_text(&q,2))</td></tr>
  }
  db_finalize(&q);
  @ </tbody></table>
  @ <h2>Interpretation</h2>
  @ <ul>
  @ <li><p><b>login-group-code</b> &rarr;
  @ A random code assigned to each login-group.  The login-group-code is
  @ a unique identifier for the login-group.
  @
  @ <li><p><b>login-group-name</b> &rarr;
  @ The human-readable name of the login-group.
  @
  @ <li><p><b>project-code</b> &rarr;
  @ A random code assigned to each project.  The project-code is
  @ a unique identifier for the project.  Multiple repositories can share
  @ the same project-code.  When two or more repositories have the same
  @ project code, that mean those repositories are clones of each other.
  @ Repositories are only able to sync if they share the same project-code.
  @
  @ <li><p><b>project-description</b> &rarr;
  @ A description of project in this repository.  This is a verbose form
  @ of project-name.  This description can be edited in the second entry
  @ box on the <a href="./setup_config">Setup/Configuration page</a>.
  @
  @ <li><p><b>project-name</b> &rarr;
  @ The human-readable name for the project.  The project-name can be
  @ modified in the first entry on the 
  @ <a href="./setup_config">Setup/Configuration page</a>.
  @
  @ <li><p><b>peer-repo-<i>CODE</i></b> &rarr;
  @ <i>CODE</i> is 16-character prefix of the project-code for another
  @ repository that is part of the same login-group.  The value is the
  @ filename for the peer repository.
  @
  @ <li><p><b>peer-name-<i>CODE</i></b> &rarr;
  @ <i>CODE</i> is 16-character prefix of the project-code for another
  @ repository that is part of the same login-group.  The value is
  @ project-name value for the other repository.
  @ </ul>
  style_table_sorter();
  style_finish_page();
}

/*
** WEBPAGE: setup_timeline
**
** Edit administrative settings controlling the display of
** timelines.
*/
void setup_timeline(void){
  double tmDiff;
  char zTmDiff[20];
  static const char *const azTimeFormats[] = {
      "0", "HH:MM",
      "1", "HH:MM:SS",
      "2", "YYYY-MM-DD HH:MM",
      "3", "YYMMDD HH:MM",
      "4", "(off)"
  };
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }

  style_set_current_feature("setup");
  style_header("Timeline Display Preferences");
  db_begin_transaction();
  @ <form action="%s(g.zBaseURL)/setup_timeline" method="POST">
  @ <form action="%R/setup_timeline" method="post"><div>
  login_insert_csrf_secret();
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>

  @ <hr>
  onoff_attribute("Allow block-markup in timeline",
                  "timeline-block-markup", "tbm", 0);
                  "timeline-block-markup", "tbm", 0, 0);
  @ <p>In timeline displays, check-in comments can be displayed with or
  @ without block markup (paragraphs, tables, etc.)</p>
  @ without block markup such as paragraphs, tables, etc.
  @ (Property: "timeline-block-markup")</p>

  @ <hr>
  onoff_attribute("Plaintext comments on timelines",
                  "timeline-plaintext", "tpt", 0, 0);
  @ <p>In timeline displays, check-in comments are displayed literally,
  @ without any wiki or HTML interpretation.  Use CSS to change
  @ display formatting features such as fonts and line-wrapping behavior.
  @ (Property: "timeline-plaintext")</p>

  @ <hr>
  onoff_attribute("Truncate comment at first blank line (Git-style)",
                  "timeline-truncate-at-blank", "ttb", 0, 0);
  @ <p>In timeline displays, check-in comments are displayed only through
  @ the first blank line.  This is the traditional way to display comments
  @ in Git repositories (Property: "timeline-truncate-at-blank")</p>

  @ <hr>
  onoff_attribute("Break comments at newline characters",
                  "timeline-hard-newlines", "thnl", 0, 0);
  @ <p>In timeline displays, newline characters in check-in comments force
  @ a line break on the display.
  @ (Property: "timeline-hard-newlines")</p>

  @ <hr>
  onoff_attribute("Use Universal Coordinated Time (UTC)",
                  "timeline-utc", "utc", 1);
                  "timeline-utc", "utc", 1, 0);
  @ <p>Show times as UTC (also sometimes called Greenwich Mean Time (GMT) or
  @ Zulu) instead of in local time.</p>

  @ Zulu) instead of in local time.  On this server, local time is currently
  tmDiff = db_double(0.0, "SELECT julianday('now')");
  tmDiff = db_double(0.0,
        "SELECT (julianday(%.17g,'localtime')-julianday(%.17g))*24.0",
        tmDiff, tmDiff);
  sqlite3_snprintf(sizeof(zTmDiff), zTmDiff, "%.1f", tmDiff);
  if( strcmp(zTmDiff, "0.0")==0 ){
    @ the same as UTC and so this setting will make no difference in
    @ the display.</p>
  }else if( tmDiff<0.0 ){
    sqlite3_snprintf(sizeof(zTmDiff), zTmDiff, "%.1f", -tmDiff);
    @ %s(zTmDiff) hours behind UTC.</p>
  }else{
    @ %s(zTmDiff) hours ahead of UTC.</p>
  }
  @ <p>(Property: "timeline-utc")

  @ <hr>
  onoff_attribute("Show version differences by default",
                  "show-version-diffs", "vdiff", 0);
  @ <p>On the version-information pages linked from the timeline can either
  @ show complete diffs of all file changes, or can just list the names of
  @ the files that have changed.  Users can get to either page by
  multiple_choice_attribute("Style", "timeline-default-style",
            "tdss", "0", N_TIMELINE_VIEW_STYLE, timeline_view_styles);
  @ <p>The default timeline viewing style, for when the user has not
  @ specified an alternative.  (Property: "timeline-default-style")</p>

  @ <hr>
  entry_attribute("Default Number Of Rows", 6, "timeline-default-length",
                  "tldl", "50", 0);
  @ <p>The maximum number of rows to show on a timeline in the absence
  @ of a user display preference cookie setting or an explicit n= query
  @ parameter.  (Property: "timeline-default-length")</p>

  @ clicking.  This setting selects the default.</p>
  @ <hr>
  multiple_choice_attribute("Per-Item Time Format", "timeline-date-format",
            "tdf", "0", count(azTimeFormats)/2, azTimeFormats);
  @ <p>If the "HH:MM" or "HH:MM:SS" format is selected, then the date is shown
  @ in a separate box (using CSS class "timelineDate") whenever the date
  @ changes.  With the "YYYY-MM-DD&nbsp;HH:MM" and "YYMMDD ..." formats,
  @ the complete date and time is shown on every timeline entry using the
  @ CSS class "timelineTime". (Property: "timeline-date-format")</p>

  @ <hr>
  entry_attribute("Max timeline comment length", 6,
                  "timeline-max-comment", "tmc", "0");
                  "timeline-max-comment", "tmc", "0", 0);
  @ <p>The maximum length of a comment to be displayed in a timeline.
  @ "0" there is no length limit.</p>
  @ "0" there is no length limit.
  @ (Property: "timeline-max-comment")</p>

  @ <hr>
  entry_attribute("Tooltip dwell time (milliseconds)", 6,
                  "timeline-dwelltime", "tdt", "100", 0);
  @ <br>
  entry_attribute("Tooltip close time (milliseconds)", 6,
                  "timeline-closetime", "tct", "250", 0);
  @ <p>The <strong>dwell time</strong> defines how long the mouse pointer
  @ should be stationary above an object of the graph before a tooltip
  @ appears.<br>
  @ The <strong>close time</strong> defines how long the mouse pointer
  @ can be away from an object before a tooltip is closed.</p>
  @ <p>Set <strong>dwell time</strong> to "0" to disable tooltips.<br>
  @ Set <strong>close time</strong> to "0" to keep tooltips visible until
  @ the mouse is clicked elsewhere.<p>
  @ <p>(Properties: "timeline-dwelltime", "timeline-closetime")</p>

  @ <hr>
  onoff_attribute("Timestamp hyperlinks to /info",
                  "timeline-tslink-info", "ttlti", 0, 0);
  @ <p>The hyperlink on the timestamp associated with each timeline entry,
  @ on the far left-hand side of the screen, normally targets another
  @ /timeline page that shows the entry in context.  However, if this
  @ option is turned on, that hyperlink targets the /info page showing
  @ the details of the entry.
  @ <p>The /timeline link is the default since it is often useful to
  @ see an entry in context, and because that link is not otherwise
  @ accessible on the timeline.  The /info link is also accessible by
  @ double-clicking the timeline node or by clicking on the hash that
  @ follows "check-in:" in the supplemental information section on the
  @ right of the entry.
  @ <p>(Properties: "timeline-tslink-info")

  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </div></form>
  db_end_transaction(0);
  style_finish_page();
}

/*
** WEBPAGE: setup_settings
**
** Change or view miscellaneous settings.  Part of the
** /setup pages requiring Setup privileges.
*/
void setup_settings(void){
  int nSetting;
  int i;
  Setting const *pSet;
  const Setting *aSetting = setting_info(&nSetting);

  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_set_current_feature("setup");
  style_header("Settings");
  if(!g.repositoryOpen){
    /* Provide read-only access to versioned settings,
       but only if no repo file was explicitly provided. */
    db_open_local(0);
  }
  db_begin_transaction();
  @ <p>Settings marked with (v) are "versionable" and will be overridden
  @ by the contents of managed files named
  @ "<tt>.fossil-settings/</tt><i>SETTING-NAME</i>".
  @ If the file for a versionable setting exists, the value cannot be
  @ changed on this screen.</p><hr><p>
  @
  @ <form action="%R/setup_settings" method="post"><div>
  @ <table border="0"><tr><td valign="top">
  login_insert_csrf_secret();
  for(i=0, pSet=aSetting; i<nSetting; i++, pSet++){
    if( pSet->width==0 ){
      int hasVersionableValue = pSet->versionable &&
          (db_get_versioned(pSet->name, NULL)!=0);
      onoff_attribute("", pSet->name,
                      pSet->var!=0 ? pSet->var : pSet->name /*works-like:"x"*/,
                      is_truth(pSet->def), hasVersionableValue);
      @ <a href='%R/help?cmd=%s(pSet->name)'>%h(pSet->name)</a>
      if( pSet->versionable ){
        @  (v)<br>
      } else {
  @ </form>
        @ <br>
      }
    }
  }
  @ <br><input type="submit"  name="submit" value="Apply Changes">
  @ </td><td style="width:50px;"></td><td valign="top">
  @ <table>
  for(i=0, pSet=aSetting; i<nSetting; i++, pSet++){
    if( pSet->width>0 && !pSet->forceTextArea ){
      int hasVersionableValue = pSet->versionable &&
          (db_get_versioned(pSet->name, NULL)!=0);
      @ <tr><td>
      @ <a href='%R/help?cmd=%s(pSet->name)'>%h(pSet->name)</a>
      if( pSet->versionable ){
        @  (v)
      } else {
        @
      }
      @</td><td>
      entry_attribute("", /*pSet->width*/ 25, pSet->name,
                      pSet->var!=0 ? pSet->var : pSet->name /*works-like:"x"*/,
                      (char*)pSet->def, hasVersionableValue);
      @</td></tr>
    }
  }
  @</table>
  @ </td><td style="width:50px;"></td><td valign="top">
  for(i=0, pSet=aSetting; i<nSetting; i++, pSet++){
    if( pSet->width>0 && pSet->forceTextArea ){
      int hasVersionableValue = db_get_versioned(pSet->name, NULL)!=0;
      @ <a href='%R/help?cmd=%s(pSet->name)'>%s(pSet->name)</a>
      if( pSet->versionable ){
        @  (v)<br>
      } else {
        @ <br>
      }
      textarea_attribute("", /*rows*/ 2, /*cols*/ 35, pSet->name,
                      pSet->var!=0 ? pSet->var : pSet->name /*works-like:"x"*/,
                      (char*)pSet->def, hasVersionableValue);
      @<br>
    }
  }
  @ </td></tr></table>
  @ </div></form>
  db_end_transaction(0);
  style_footer();
  style_finish_page();
}

/*
** SETTING:  mainmenu          width=70 block-text keep-empty
**
** The mainmenu setting specifies the entries on the main menu
** for many skins.  The mainmenu should be a TCL list.  Each set
** of four consecutive values defines a single main menu item:
**
**   *   The first term is text that appears on the menu.
**
**   *   The second term is a hyperlink to take when a user clicks on the
**       entry.  Hyperlinks that start with "/" are relative to the
**       repository root.
**
**   *   The third term is an argument to the TH1 "capexpr" command.
**       If capexpr evaluates to true, then the entry is shown.  If not,
**       the entry is omitted.  "*" is always true.  "{}" is never true.
**
**   *   The fourth term is a list of extra class names to apply to the
**       new menu entry.  Some skins use classes "desktoponly" and
**       "wideonly" to only show the entries when the web browser
**       screen is wide or very wide, respectively.
**
** Some custom skins might not use this property.  Whether the property
** is used or not a choice made by the skin designer.  Some skins may add
** extra choices (such as the hamburger button) to the menu.
*/
/*
** SETTING: sitemap-extra      width=70 block-text
**
** The sitemap-extra setting defines extra links to appear on the
** /sitemap web page as sub-items of the "Home Page" entry before the
** "Documentation Search" entry (if any).  For skins that use the /sitemap
** page to construct a hamburger menu dropdown, new entries added here
** will appear on the hamburger menu.
**
** This setting should be a TCL list divided into triples.  Each
** triple defines a new entry:
**
**   *   The first term is the display name of the /sitemap entry
**
**   *   The second term is a hyperlink to take when a user clicks on the
**       entry.  Hyperlinks that start with "/" are relative to the
**       repository root.
**
**   *   The third term is an argument to the TH1 "capexpr" command.
**       If capexpr evaluates to true, then the entry is shown.  If not,
**       the entry is omitted.  "*" is always true.
**
** The default value is blank, meaning no added entries.
*/


/*
** WEBPAGE: setup_config
**
** The "Admin/Configuration" page.  Requires Setup privilege.
*/
void setup_config(void){
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_set_current_feature("setup");
  style_header("WWW Configuration");
  db_begin_transaction();
  @ <form action="%s(g.zBaseURL)/setup_config" method="POST">
  @ <form action="%R/setup_config" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="submit"  name="submit" value="Apply Changes"></p>
  @ <hr />
  entry_attribute("Project Name", 60, "project-name", "pn", "");
  @ <p>Give your project a name so visitors know what this site is about.
  @ The project name will also be used as the RSS feed title.</p>
  @ <hr />
  textarea_attribute("Project Description", 5, 60,
                     "project-description", "pd", "");
  @ <hr>
  entry_attribute("Project Name", 60, "project-name", "pn", "", 0);
  @ <p>A brief project name so visitors know what this site is about.
  @ The project name will also be used as the RSS feed title.
  @ (Property: "project-name")
  @ </p>
  @ <hr>
  textarea_attribute("Project Description", 3, 80,
                     "project-description", "pd", "", 0);
  @ <p>Describe your project. This will be used in page headers for search
  @ engines as well as a short RSS description.</p>
  @ <hr />
  entry_attribute("Index Page", 60, "index-page", "idxpg", "/home");
  @ engines as well as a short RSS description.
  @ (Property: "project-description")</p>
  @ <hr>
  entry_attribute("Canonical Server URL", 40, "email-url",
                   "eurl", "", 0);
  @ <p>This is the URL used to access this repository as a server.
  @ Other repositories use this URL to clone or sync against this repository.
  @ This is also the basename for hyperlinks included in email alert text.
  @ Omit the trailing "/".
  @ If this repo will not be set up as a persistent server and will not
  @ be sending email alerts, then leave this entry blank.
  @ Suggested value: "%h(g.zBaseURL)"
  @ (Property: "email-url")</p>
  @ <hr>
  entry_attribute("Tarball and ZIP-archive Prefix", 20, "short-project-name",
                  "spn", "", 0);
  @ <p>This is used as a prefix on the names of generated tarballs and
  @ ZIP archive. For best results, keep this prefix brief and avoid special
  @ characters such as "/" and "\".
  @ If no tarball prefix is specified, then the full Project Name above is used.
  @ (Property: "short-project-name")
  @ </p>
  @ <hr>
  entry_attribute("Download Tag", 20, "download-tag", "dlt", "trunk", 0);
  @ <p>The <a href='%R/download'>/download</a> page is designed to provide
  @ a convenient place for newbies
  @ to download a ZIP archive or a tarball of the project.  By default,
  @ the latest trunk check-in is downloaded.  Change this tag to something
  @ else (ex: release) to alter the behavior of the /download page.
  @ (Property: "download-tag")
  @ </p>
  @ <hr>
  entry_attribute("Index Page", 60, "index-page", "idxpg", "/home", 0);
  @ <p>Enter the pathname of the page to display when the "Home" menu
  @ option is selected and when no pathname is
  @ specified in the URL.  For example, if you visit the url:</p>
  @
  @ <blockquote>%h(g.zBaseURL)</blockquote>
  @ <blockquote><p>%h(g.zBaseURL)</p></blockquote>
  @
  @ <p>And you have specified an index page of "/home" the above will
  @ automatically redirect to:</p>
  @
  @ <blockquote>%h(g.zBaseURL)/home</blockquote>
  @ <blockquote><p>%h(g.zBaseURL)/home</p></blockquote>
  @
  @ <p>The default "/home" page displays a Wiki page with the same name
  @ as the Project Name specified above.  Some sites prefer to redirect
  @ to a documentation page (ex: "/doc/tip/index.wiki") or to "/timeline".</p>
  @ <hr />
  @ to a documentation page (ex: "/doc/trunk/index.wiki") or to "/timeline".</p>
  @
  @ <p>Note:  To avoid a redirect loop or other problems, this entry must
  @ begin with "/" and it must specify a valid page.  For example,
  @ "<b>/home</b>" will work but "<b>home</b>" will not, since it omits the
  @ leading "/".</p>
  @ <p>(Property: "index-page")
  @ <hr>
  @ <p>The main menu for the web interface
  @ <p>
  @
  @ <p>This setting should be a TCL list.  Each set of four consecutive
  @ values defines a single main menu item:
  @ <ol>
  @ <li> The first term is text that appears on the menu.
  @ <li> The second term is a hyperlink to take when a user clicks on the
  @      entry.  Hyperlinks that start with "/" are relative to the
  @      repository root.
  @ <li> The third term is an argument to the TH1 "capexpr" command.
  @      If capexpr evaluates to true, then the entry is shown.  If not,
  @      the entry is omitted.  "*" is always true.  "{}" is never true.
  @ <li> The fourth term is a list of extra class names to apply to the new
  @      menu entry.  Some skins use classes "desktoponly" and "wideonly"
  @      to only show the entries when the web browser screen is wide or
  @      very wide, respectively.
  @ </ol>
  @
  @ <p>Some custom skins might not use this property. Whether the property
  @ is used or not a choice made by the skin designer. Some skins may add extra
  @ choices (such as the hamburger button) to the menu that are not shown
  @ on this list. (Property: mainmenu)
  @ <p>
  if(P("resetMenu")!=0){
    db_unset("mainmenu", 0);
    cgi_delete_parameter("mmenu");
  }
  textarea_attribute("Main Menu", 12, 80,
      "mainmenu", "mmenu", style_default_mainmenu(), 0);
  @ </p>
  @ <p><input type='checkbox' id='cbResetMenu' name='resetMenu' value='1'>
  @ <label for='cbResetMenu'>Reset menu to default value</label>
  @ </p>
  @ <hr>
  @ <p>Extra links to appear on the <a href="%R/sitemap">/sitemap</a> page,
  @ as sub-items of the "Home Page" entry, appearing before the
  @ "Documentation Search" entry (if any).  In skins that use the /sitemap
  @ page to construct a hamburger menu dropdown, new entries added here
  @ will appear on the hamburger menu.
  @
  @ <p>This setting should be a TCL list divided into triples.  Each
  @ triple defines a new entry:
  @ <ol>
  @ <li> The first term is the display name of the /sitemap entry
  @ <li> The second term is a hyperlink to take when a user clicks on the
  @      entry.  Hyperlinks that start with "/" are relative to the
  @      repository root.
  @ <li> The third term is an argument to the TH1 "capexpr" command.
  @      If capexpr evaluates to true, then the entry is shown.  If not,
  @      the entry is omitted.  "*" is always true.
  @ </ol>
  @
  @ <p>The default value is blank, meaning no added entries.
  @ (Property: sitemap-extra)
  @ <p>
  textarea_attribute("Custom Sitemap Entries", 8, 80,
      "sitemap-extra", "smextra", "", 0);
  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </div></form>
  db_end_transaction(0);
  style_finish_page();
}

/*
** WEBPAGE: setup_wiki
**
** The "Admin/Wiki" page.  Requires Setup privilege.
*/
void setup_wiki(void){
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_set_current_feature("setup");
  style_header("Wiki Configuration");
  db_begin_transaction();
  @ <form action="%R/setup_wiki" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="submit"  name="submit" value="Apply Changes"></p>
  @ <hr>
  onoff_attribute("Associate Wiki Pages With Branches, Tags, or Checkins",
                  "wiki-about", "wiki-about", 1, 0);
  @ <p>
  @ Associate wiki pages with branches, tags, or checkins, based on
  @ the wiki page name.  Wiki pages that begin with "branch/", "checkin/"
  @ or "tag/" and which continue with the name of an existing branch, check-in
  @ or tag are treated specially when this feature is enabled.
  @ <ul>
  @ <li> <b>branch/</b><i>branch-name</i>
  @ <li> <b>checkin/</b><i>full-check-in-hash</i>
  @ <li> <b>tag/</b><i>tag-name</i>
  @ </ul>
  @ (Property: "wiki-about")</p>
  @ <hr>
  entry_attribute("Allow Unsafe HTML In Markdown", 6,
                  "safe-html", "safe-html", "", 0);
  @ <p>Allow "unsafe" HTML (ex: &lt;script&gt;, &lt;form&gt;, etc) to be
  @ generated by <a href="%R/md_rules">Markdown-formatted</a> documents.
  @ This setting is a string where each character indicates a "type" of
  @ document in which to allow unsafe HTML:
  @ <ul>
  @ <li> <b>b</b> &rarr; checked-in files, embedded documentation
  @ <li> <b>f</b> &rarr; forum posts
  @ <li> <b>t</b> &rarr; tickets
  @ <li> <b>w</b> &rarr; wiki pages
  @ </ul>
  @ Include letters for each type of document for which unsafe HTML should
  @ be allowed.  For example, to allow unsafe HTML only for checked-in files,
  @ make this setting be just "<b>b</b>".  To allow unsafe HTML anywhere except
  @ in forum posts, make this setting be "<b>btw</b>".  The default is an
  @ empty string which means that Fossil never allows Markdown documents
  @ to generate unsafe HTML.
  @ (Property: "safe-html")</p>
  @ <hr>
  @ The current interwiki tag map is as follows:
  interwiki_append_map_table(cgi_output_blob());
  @ <p>Visit <a href="./intermap">%R/intermap</a> for details or to
  @ modify the interwiki tag map.
  @ <hr>
  onoff_attribute("Use HTML as wiki markup language",
    "wiki-use-html", "wiki-use-html", 0);
  @ <p>Use HTML as the wiki markup language. Wiki links will still be parsed but
  @ all other wiki formatting will be ignored. This option is helpful if you have
    "wiki-use-html", "wiki-use-html", 0, 0);
  @ <p>Use HTML as the wiki markup language. Wiki links will still be parsed
  @ but all other wiki formatting will be ignored.</p>
  @ chosen to use a rich HTML editor for wiki markup such as TinyMCE.</p>
  @ <p><strong>CAUTION:</strong> when
  @ enabling, <i>all</i> HTML tags and attributes are accepted in the wiki.
  @ No sanitization is done. This means that it is very possible for malicious
  @ users to inject dangerous HTML, CSS and JavaScript code into your wiki.</p>
  @ <p>This should <strong>only</strong> be enabled when wiki editing is limited
  @ to trusted users. It should <strong>not</strong> be used on a publically
  @ to trusted users. It should <strong>not</strong> be used on a publicly
  @ editable wiki.</p>
  @ (Property: "wiki-use-html")
  @ <hr />
  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </form>
  @ </div></form>
  db_end_transaction(0);
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: setup_editcss
** WEBPAGE: setup_chat
**
** The "Admin/Chat" page.  Requires Setup privilege.
*/
void setup_editcss(void){
void setup_chat(void){
  static const char *const azAlerts[] = {
    "alerts/plunk.wav",  "Plunk",
    "alerts/bflat3.wav", "Tone-1",
    "alerts/bflat2.wav", "Tone-2",
    "alerts/bloop.wav",  "Bloop",
  };

  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  }
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_set_current_feature("setup");
  style_header("Chat Configuration");
  db_begin_transaction();
  if( P("clear")!=0 ){
    db_multi_exec("DELETE FROM config WHERE name='css'");
    cgi_replace_parameter("css", zDefaultCSS);
    db_end_transaction(0);
    cgi_redirect("setup_editcss");
  }else{
    textarea_attribute(0, 0, 0, "css", "css", zDefaultCSS);
  }
  if( P("submit")!=0 ){
    db_end_transaction(0);
    cgi_redirect("setup_editcss");
  }
  style_header("Edit CSS");
  @ <form action="%s(g.zBaseURL)/setup_editcss" method="POST">
  @ <form action="%R/setup_chat" method="post"><div>
  login_insert_csrf_secret();
  @ <input type="submit"  name="submit" value="Apply Changes"></p>
  @ Edit the CSS below:<br />
  textarea_attribute("", 40, 80, "css", "css", zDefaultCSS);
  @ <br />
  @ <input type="submit" name="submit" value="Apply Changes">
  @ <input type="submit" name="clear" value="Revert To Default">
  @ </form>
  @ <hr>
  entry_attribute("Initial Chat History Size", 10,
                  "chat-initial-history", "chatih", "50", 0);
  @ <p>When /chat first starts up, it preloads up to this many historical
  @ messages.
  @ (Property: "chat-initial-history")</p>
  @ <hr>
  entry_attribute("Minimum Number Of Historical Messages To Retain", 10,
                  "chat-keep-count", "chatkc", "50", 0);
  @ <p>The chat subsystem purges older messages.  But it will always retain
  @ the N most recent messages where N is the value of this setting.
  @ (Property: "chat-keep-count")</p>
  @ <hr>
  entry_attribute("Maximum Message Age In Days", 10,
                  "chat-keep-days", "chatkd", "7", 0);
  @ <p>Chat message are removed after N days, where N is the value of
  @ this setting.  N may be fractional.  So, for example, to only keep
  @ an historical record of chat messages for 12 hours, set this value
  @ to 0.5.
  @ (Property: "chat-keep-days")</p>
  @ <hr>
  entry_attribute("Chat Polling Timeout", 10,
                  "chat-poll-timeout", "chatpt", "420", 0);
  @ <p>New chat content is downloaded using the "long poll" technique.
  @ HTTP requests are made to /chat-poll which blocks waiting on new
  @ content to arrive.  But the /chat-poll cannot block forever.  It
  @ eventual must give up and return an empty message set.  This setting
  @ determines how long /chat-poll will wait before giving up.  The
  @ default setting of approximately 7 minutes works well on many systems.
  @ Shorter delays might be required on installations that use proxies
  @ or web-servers with short timeouts.  For best efficiency, this value
  @ should be larger rather than smaller.
  @ (Property: "chat-poll-timeout")</p>
  @ <hr>
  @ <p><b>Note:</b> Press your browser Reload button after modifying the
  @ CSS in order to pull in the modified CSS file.</p>
  entry_attribute("Chat Timeline Robot Username", 15,
                  "chat-timeline-user", "chatrobot", "", 0);
  @ <p>If this setting is not an empty string, then any changes that appear
  @ on the timeline are announced in the chatroom under the username
  @ supplied.  The username does not need to actually exist in the USER table.
  @ Suggested username:  "chat-robot".
  @ (Property: "chat-timeline-user")</p>
  @ <hr>
  @ The default CSS is shown below for reference.  Other examples
  @ of CSS files can be seen on the <a href="setup_skin">skins page</a>.
  @ See also the <a href="setup_header">header</a> and
  @ <a href="setup_footer">footer</a> editing screens.
  @ <blockquote><pre>
  @ %h(zDefaultCSS)
  @ </pre></blockquote>
  style_footer();
  db_end_transaction(0);
}


  multiple_choice_attribute("Alert sound",
     "chat-alert-sound", "snd", azAlerts[0],
     count(azAlerts)/2, azAlerts);
  @ <p>The sound used in the client-side chat to indicate that a new
  @ chat message has arrived.
  @ (Property: "chat-alert-sound")</p>
  @ <hr/>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ </div></form>
  db_end_transaction(0);
  @ <script nonce="%h(style_nonce())">
  @ (function(){
  @   var w = document.getElementById('idsnd');
  @   w.onchange = function(){
  @     var audio = new Audio('%s(g.zBaseURL)/builtin/' + w.value);
  @     audio.currentTime = 0;
  @     audio.play();
  @   }
  @ })();
  @ </script>
  style_finish_page();
}

/*
** WEBPAGE: setup_header
** WEBPAGE: setup_modreq
**
** Admin page for setting up moderation of tickets and wiki.
*/
void setup_header(void){
void setup_modreq(void){
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  db_begin_transaction();
  if( P("clear")!=0 ){
    db_multi_exec("DELETE FROM config WHERE name='header'");
    cgi_replace_parameter("header", zDefaultHeader);
  }else{
    textarea_attribute(0, 0, 0, "header", "header", zDefaultHeader);
  }
  style_header("Edit Page Header");
  @ <form action="%s(g.zBaseURL)/setup_header" method="POST">

  style_set_current_feature("setup");
  style_header("Moderator For Wiki And Tickets");
  db_begin_transaction();
  @ <form action="%R/setup_modreq" method="post"><div>
  login_insert_csrf_secret();
  @ <p>Edit HTML text with embedded TH1 (a TCL dialect) that will be used to
  @ generate the beginning of every page through start of the main
  @ menu.</p>
  textarea_attribute("", 40, 80, "header", "header", zDefaultHeader);
  @ <br />
  @ <input type="submit" name="submit" value="Apply Changes">
  @ <hr>
  onoff_attribute("Moderate ticket changes",
     "modreq-tkt", "modreq-tkt", 0, 0);
  @ <p>When enabled, any change to tickets is subject to the approval
  @ by a ticket moderator - a user with the "q" or Mod-Tkt privilege.
  @ Ticket changes enter the system and are shown locally, but are not
  @ synced until they are approved.  The moderator has the option to
  @ delete the change rather than approve it.  Ticket changes made by
  @ a user who has the Mod-Tkt privilege are never subject to
  @ moderation. (Property: "modreq-tkt")
  @
  @ <hr>
  onoff_attribute("Moderate wiki changes",
     "modreq-wiki", "modreq-wiki", 0, 0);
  @ <p>When enabled, any change to wiki is subject to the approval
  @ by a wiki moderator - a user with the "l" or Mod-Wiki privilege.
  @ Wiki changes enter the system and are shown locally, but are not
  @ synced until they are approved.  The moderator has the option to
  @ delete the change rather than approve it.  Wiki changes made by
  @ a user who has the Mod-Wiki privilege are never subject to
  @ moderation. (Property: "modreq-wiki")
  @ </p>

  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ <input type="submit" name="clear" value="Revert To Default">
  @ </form>
  @ <hr>
  @ The default header is shown below for reference.  Other examples
  @ of headers can be seen on the <a href="setup_skin">skins page</a>.
  @ See also the <a href="setup_editcss">CSS</a> and
  @ <a href="setup_footer">footer</a> editing screeens.
  @ <blockquote><pre>
  @ </div></form>
  db_end_transaction(0);
  style_finish_page();

}

/*
** WEBPAGE: setup_adunit
**
** Administrative page for configuring and controlling ad units
** and how they are displayed.
*/
void setup_adunit(void){
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
  @ %h(zDefaultHeader)
  @ </pre></blockquote>
    return;
  style_footer();
  db_end_transaction(0);
}

  }
  db_begin_transaction();
  if( P("clear")!=0 && cgi_csrf_safe(2) ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec("DELETE FROM config WHERE name GLOB 'adunit*'");
    db_protect_pop();
    cgi_replace_parameter("adunit","");
    cgi_replace_parameter("adright","");
    setup_incr_cfgcnt();
  }

  style_set_current_feature("setup");
/*
** WEBPAGE: setup_footer
  style_header("Edit Ad Unit");
  @ <form action="%R/setup_adunit" method="post"><div>
*/
void setup_footer(void){
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  login_insert_csrf_secret();
  @ <b>Banner Ad-Unit:</b><br>
 textarea_attribute("", 6, 80, "adunit", "adunit", "", 0);
  @ <br>
  @ <b>Right-Column Ad-Unit:</b><br>
  }
  db_begin_transaction();
  if( P("clear")!=0 ){
    db_multi_exec("DELETE FROM config WHERE name='footer'");
    cgi_replace_parameter("footer", zDefaultFooter);
  }else{
    textarea_attribute(0, 0, 0, "footer", "footer", zDefaultFooter);
  textarea_attribute("", 6, 80, "adunit-right", "adright", "", 0);
  @ <br>
  onoff_attribute("Omit ads to administrator",
     "adunit-omit-if-admin", "oia", 0, 0);
  @ <br>
  onoff_attribute("Omit ads to logged-in users",
     "adunit-omit-if-user", "oiu", 0, 0);
  @ <br>
  onoff_attribute("Temporarily disable all ads",
  }
  style_header("Edit Page Footer");
  @ <form action="%s(g.zBaseURL)/setup_footer" method="POST">
  login_insert_csrf_secret();
  @ <p>Edit HTML text with embedded TH1 (a TCL dialect) that will be used to
     "adunit-disable", "oall", 0, 0);
  @ <br>
  @ <input type="submit" name="submit" value="Apply Changes">
  @ <input type="submit" name="clear" value="Delete Ad-Unit">
  @ </div></form>
  @ <hr>
  @ <b>Ad-Unit Notes:</b><ul>
  @ <li>Leave both Ad-Units blank to disable all advertising.
  @ <li>The "Banner Ad-Unit" is used for wide pages.
  @ <li>The "Right-Column Ad-Unit" is used on pages with tall, narrow content.
  @ <li>If the "Right-Column Ad-Unit" is blank, the "Banner Ad-Unit" is
  @     used on all pages.
  @ <li>Properties: "adunit", "adunit-right", "adunit-omit-if-admin", and
  @     "adunit-omit-if-user".
  @ <li>Suggested <a href="setup_skinedit?w=0">CSS</a> changes:
  @ generate the end of every page.</p>
  textarea_attribute("", 20, 80, "footer", "footer", zDefaultFooter);
  @ <br />
  @ <input type="submit" name="submit" value="Apply Changes">
  @ <blockquote><pre>
  @ div.adunit_banner {
  @   margin: auto;
  @   width: 100%%;
  @ <input type="submit" name="clear" value="Revert To Default">
  @ </form>
  @ <hr>
  @ }
  @ div.adunit_right {
  @   float: right;
  @ }
  @ The default footer is shown below for reference.  Other examples
  @ of footers can be seen on the <a href="setup_skin">skins page</a>.
  @ See also the <a href="setup_editcss">CSS</a> and
  @ <a href="setup_header">header</a> editing screens.
  @ div.adunit_right_container {
  @   min-height: <i>height-of-right-column-ad-unit</i>;
  @ }
  @ </pre></blockquote>
  @ <li>For a place-holder Ad-Unit for testing, Copy/Paste the following
  @ with appropriate adjustments to "width:" and "height:".
  @ <blockquote><pre>
  @ %h(zDefaultFooter)
  @ &lt;div style='
  @   margin: 0 auto;
  @   width: 600px;
  @   height: 90px;
  @   border: 1px solid #f11;
  @   background-color: #fcc;
  @ '&gt;Demo Ad&lt;/div&gt;
  @ </pre></blockquote>
  @ </li>
  style_footer();
  style_finish_page();
  db_end_transaction(0);
}

/*
** WEBPAGE: setup_logo
**
** Administrative page for changing the logo, background, and icon images.
*/
void setup_logo(void){
  const char *zLogoMtime = db_get_mtime("logo-image", 0, 0);
  const char *zLogoMime = db_get("logo-mimetype","image/gif");
  const char *aLogoImg = P("logoim");
  int szLogoImg = atoi(PD("logoim:bytes","0"));
  const char *zBgMtime = db_get_mtime("background-image", 0, 0);
  const char *zBgMime = db_get("background-mimetype","image/gif");
  const char *zMime = "image/gif";
  const char *aImg = P("im");
  int szImg = atoi(PD("im:bytes","0"));
  if( szImg>0 ){
    zMime = PD("im:mimetype","image/gif");
  const char *aBgImg = P("bgim");
  int szBgImg = atoi(PD("bgim:bytes","0"));
  const char *zIconMtime = db_get_mtime("icon-image", 0, 0);
  const char *zIconMime = db_get("icon-mimetype","image/gif");
  const char *aIconImg = P("iconim");
  int szIconImg = atoi(PD("iconim:bytes","0"));
  if( szLogoImg>0 ){
    zLogoMime = PD("logoim:mimetype","image/gif");
  }
  if( szBgImg>0 ){
    zBgMime = PD("bgim:mimetype","image/gif");
  }
  if( szIconImg>0 ){
    zIconMime = PD("iconim:mimetype","image/gif");
  }
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  db_begin_transaction();
  if( !cgi_csrf_safe(2) ){
    /* Allow no state changes if not safe from CSRF */
  if( P("set")!=0 && zMime && zMime[0] && szImg>0 ){
  }else if( P("setlogo")!=0 && zLogoMime && zLogoMime[0] && szLogoImg>0 ){
    Blob img;
    Stmt ins;
    blob_init(&img, aImg, szImg);
    blob_init(&img, aLogoImg, szLogoImg);
    db_unprotect(PROTECT_CONFIG);
    db_prepare(&ins,
        "REPLACE INTO config(name, value)"
        " VALUES('logo-image',:bytes)"
        "REPLACE INTO config(name,value,mtime)"
        " VALUES('logo-image',:bytes,now())"
    );
    db_bind_blob(&ins, ":bytes", &img);
    db_step(&ins);
    db_finalize(&ins);
    db_multi_exec(
       "REPLACE INTO config(name,value,mtime) VALUES('logo-mimetype',%Q,now())",
       zLogoMime
    );
    db_protect_pop();
    db_end_transaction(0);
    cgi_redirect("setup_logo");
  }else if( P("clrlogo")!=0 ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "DELETE FROM config WHERE name IN "
           "('logo-image','logo-mimetype')"
    );
    db_protect_pop();
    db_end_transaction(0);
    cgi_redirect("setup_logo");
  }else if( P("setbg")!=0 && zBgMime && zBgMime[0] && szBgImg>0 ){
    Blob img;
    Stmt ins;
    blob_init(&img, aBgImg, szBgImg);
    db_unprotect(PROTECT_CONFIG);
    db_prepare(&ins,
        "REPLACE INTO config(name,value,mtime)"
        " VALUES('background-image',:bytes,now())"
    );
    db_bind_blob(&ins, ":bytes", &img);
    db_step(&ins);
    db_finalize(&ins);
    db_multi_exec(
       "REPLACE INTO config(name,value,mtime)"
       " VALUES('background-mimetype',%Q,now())",
       zBgMime
    );
    db_protect_pop();
    db_end_transaction(0);
    cgi_redirect("setup_logo");
  }else if( P("clrbg")!=0 ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "DELETE FROM config WHERE name IN "
           "('background-image','background-mimetype')"
    );
    db_protect_pop();
    db_end_transaction(0);
    cgi_redirect("setup_logo");
  }else if( P("seticon")!=0 && zIconMime && zIconMime[0] && szIconImg>0 ){
    Blob img;
    Stmt ins;
    blob_init(&img, aIconImg, szIconImg);
    db_unprotect(PROTECT_CONFIG);
    db_prepare(&ins,
        "REPLACE INTO config(name,value,mtime)"
        " VALUES('icon-image',:bytes,now())"
    );
    db_bind_blob(&ins, ":bytes", &img);
    db_step(&ins);
    db_finalize(&ins);
    db_multi_exec(
       "REPLACE INTO config(name, value) VALUES('logo-mimetype',%Q)",
       zMime
       "REPLACE INTO config(name,value,mtime)"
       " VALUES('icon-mimetype',%Q,now())",
       zIconMime
    );
    db_protect_pop();
    db_end_transaction(0);
    cgi_redirect("setup_logo");
  }else if( P("clr")!=0 ){
  }else if( P("clricon")!=0 ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "DELETE FROM config WHERE name GLOB 'logo-*'"
       "DELETE FROM config WHERE name IN "
           "('icon-image','icon-mimetype')"
    );
    db_protect_pop();
    db_end_transaction(0);
    cgi_redirect("setup_logo");
  }
  style_set_current_feature("setup");
  style_header("Edit Project Logo");
  @ <p>The current project logo has a MIME-Type of <b>%h(zMime)</b> and looks
  @ like this:</p>
  @ <blockquote><img src="%s(g.zTop)/logo" alt="logo"></blockquote>
  style_header("Edit Project Logo And Background");
  @ <p>The current project logo has a MIME-Type of <b>%h(zLogoMime)</b>
  @ and looks like this:</p>
  @ <blockquote><p>
  @ <img src="%R/logo/%z(zLogoMtime)" alt="logo" border="1">
  @ </p></blockquote>
  @
  @ <form action="%R/setup_logo" method="post"
  @  enctype="multipart/form-data"><div>
  @ <p>The logo is accessible to all users at this URL:
  @ <a href="%s(g.zBaseURL)/logo">%s(g.zBaseURL)/logo</a>.
  @ The logo may or may not appear on each
  @ page depending on the <a href="setup_editcss">CSS</a> and
  @ <a href="setup_header">header setup</a>.</p>
  @ page depending on the <a href="setup_skinedit?w=0">CSS</a> and
  @ <a href="setup_skinedit?w=2">header setup</a>.
  @
  @ <form action="%s(g.zBaseURL)/setup_logo" method="POST"
  @  enctype="multipart/form-data">
  @ <p>To set a new logo image, select a file to use as the logo using
  @ To change the logo image, use the following form:</p>
  @ the entry box below and then press the "Change Logo" button.</p>
  login_insert_csrf_secret();
  @ Logo Image file:
  @ <input type="file" name="im" size="60" accepts="image/*"><br>
  @ <input type="submit" name="set" value="Change Logo">
  @ <input type="submit" name="clr" value="Revert To Default">
  @ </form>
  @ <input type="file" name="logoim" size="60" accept="image/*">
  @ <p align="center">
  @ <input type="submit" name="setlogo" value="Change Logo">
  @ <input type="submit" name="clrlogo" value="Revert To Default"></p>
  @ <p>(Properties: "logo-image" and "logo-mimetype")
  @ </div></form>
  @ <hr>
  @
  @ <p>The current background image has a MIME-Type of <b>%h(zBgMime)</b>
  @ and looks like this:</p>
  @ <blockquote><p><img src="%R/background/%z(zBgMtime)" \
  @ alt="background" border=1>
  @ </p></blockquote>
  @
  @ <form action="%R/setup_logo" method="post"
  @  enctype="multipart/form-data"><div>
  @ <p>The background image is accessible to all users at this URL:
  @ <a href="%s(g.zBaseURL)/background">%s(g.zBaseURL)/background</a>.
  @ The background image may or may not appear on each
  @ page depending on the <a href="setup_skinedit?w=0">CSS</a> and
  @ <a href="setup_skinedit?w=2">header setup</a>.
  @ To change the background image, use the following form:</p>
  login_insert_csrf_secret();
  @ Background image file:
  @ <input type="file" name="bgim" size="60" accept="image/*">
  @ <p align="center">
  @ <input type="submit" name="setbg" value="Change Background">
  @ <input type="submit" name="clrbg" value="Revert To Default"></p>
  @ </div></form>
  @ <p>(Properties: "background-image" and "background-mimetype")
  @ <hr>
  @
  @ <p>The current icon image has a MIME-Type of <b>%h(zIconMime)</b>
  @ and looks like this:</p>
  @ <blockquote><p><img src="%R/favicon.ico/%z(zIconMtime)" \
  @ alt="icon" border=1>
  @ </p></blockquote>
  @
  @ <form action="%R/setup_logo" method="post"
  @  enctype="multipart/form-data"><div>
  @ <p>The icon image is accessible to all users at this URL:
  @ <a href="%s(g.zBaseURL)/favicon.ico">%s(g.zBaseURL)/favicon.ico</a>.
  @ The icon image may or may not appear on each
  @ page depending on the web browser in use and the MIME-Types that it
  @ supports for icon images.
  @ To change the icon image, use the following form:</p>
  login_insert_csrf_secret();
  @ Icon image file:
  @ <input type="file" name="iconim" size="60" accept="image/*">
  @ <p align="center">
  @ <input type="submit" name="seticon" value="Change Icon">
  @ <input type="submit" name="clricon" value="Revert To Default"></p>
  @ </div></form>
  @ <p>(Properties: "icon-image" and "icon-mimetype")
  @ <hr>
  @
  @ <p><b>Note:</b>  Your browser has probably cached the logo image, so
  @ you will probably need to press the Reload button on your browser after
  @ <p><span class="note">Note:</span>  Your browser has probably cached these
  @ images, so you may need to press the Reload button before changes will
  @ changing the logo to provoke your browser to reload the new logo image.
  @ </p>
  style_footer();
  @ take effect. </p>
  style_finish_page();
  db_end_transaction(0);
}

/*
** Prevent the RAW SQL feature from being used to ATTACH a different
** database and query it.
**
** Actually, the RAW SQL feature only does a single statement per request.
** So it is not possible to ATTACH and then do a separate query.  This
** routine is not strictly necessary, therefore.  But it does not hurt
** to be paranoid.
*/
int raw_sql_query_authorizer(
  void *pError,
  int code,
  const char *zArg1,
  const char *zArg2,
  const char *zArg3,
  const char *zArg4
){
  if( code==SQLITE_ATTACH ){
    return SQLITE_DENY;
  }
  return SQLITE_OK;
}


/*
** WEBPAGE: admin_sql
**
** Run raw SQL commands against the database file using the web interface.
** Requires Setup privileges.
*/
void sql_page(void){
  const char *zQ;
  int go = P("go")!=0;
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  add_content_sql_commands(g.db);
  zQ = cgi_csrf_safe(2) ? P("q") : 0;
  style_set_current_feature("setup");
  style_header("Raw SQL Commands");
  @ <p><b>Caution:</b> There are no restrictions on the SQL that can be
  @ run by this page.  You can do serious and irrepairable damage to the
  @ repository.  Proceed with extreme caution.</p>
  @
#if 0
  @ <p>Only the first statement in the entry box will be run.
  @ Any subsequent statements will be silently ignored.</p>
  @
  @ <p>Database names:<ul><li>repository
  if( g.zConfigDbName ){
    @ <li>configdb
  }
  if( g.localOpen ){
    @ <li>localdb
  }
  @ </ul></p>
#endif

  if( P("configtab") ){
    /* If the user presses the "CONFIG Table Query" button, populate the
    ** query text with a pre-packaged query against the CONFIG table */
    zQ = "SELECT\n"
         " CASE WHEN length(name)<50 THEN name ELSE printf('%.50s...',name)"
         "  END AS name,\n"
         " CASE WHEN typeof(value)<>'blob' AND length(value)<80 THEN value\n"
         "           ELSE '...' END AS value,\n"
         " datetime(mtime, 'unixepoch') AS mtime\n"
         "FROM config\n"
         "-- ORDER BY mtime DESC; -- optional";
     go = 1;
  }
  @
  @ <form method="post" action="%R/admin_sql">
  login_insert_csrf_secret();
  @ SQL:<br>
  @ <textarea name="q" rows="8" cols="80">%h(zQ)</textarea><br>
  @ <input type="submit" name="go" value="Run SQL">
  @ <input type="submit" name="schema" value="Show Schema">
  @ <input type="submit" name="tablelist" value="List Tables">
  @ <input type="submit" name="configtab" value="CONFIG Table Query">
  @ </form>
  if( P("schema") ){
    zQ = sqlite3_mprintf(
            "SELECT sql FROM repository.sqlite_schema"
            " WHERE sql IS NOT NULL ORDER BY name");
    go = 1;
  }else if( P("tablelist") ){
    zQ = sqlite3_mprintf("SELECT*FROM pragma_table_list ORDER BY schema, name");
    go = 1;
  }
  if( go && cgi_csrf_safe(2) ){
    sqlite3_stmt *pStmt;
    int rc;
    const char *zTail;
    int nCol;
    int nRow = 0;
    int i;
    @ <hr>
    sqlite3_set_authorizer(g.db, raw_sql_query_authorizer, 0);
    search_sql_setup(g.db);
    rc = sqlite3_prepare_v2(g.db, zQ, -1, &pStmt, &zTail);
    if( rc!=SQLITE_OK ){
      @ <div class="generalError">%h(sqlite3_errmsg(g.db))</div>
      sqlite3_finalize(pStmt);
    }else if( pStmt==0 ){
      /* No-op */
    }else if( (nCol = sqlite3_column_count(pStmt))==0 ){
      sqlite3_step(pStmt);
      rc = sqlite3_finalize(pStmt);
      if( rc ){
        @ <div class="generalError">%h(sqlite3_errmsg(g.db))</div>
      }
    }else{
      @ <table border="1" cellpadding="4" cellspacing="0">
      while( sqlite3_step(pStmt)==SQLITE_ROW ){
        if( nRow==0 ){
          @ <tr>
          for(i=0; i<nCol; i++){
            @ <th>%h(sqlite3_column_name(pStmt, i))</th>
          }
          @ </tr>
        }
        nRow++;
        @ <tr>
        for(i=0; i<nCol; i++){
          switch( sqlite3_column_type(pStmt, i) ){
            case SQLITE_INTEGER:
            case SQLITE_FLOAT: {
               @ <td align="right" valign="top">
               @ %s(sqlite3_column_text(pStmt, i))</td>
               break;
            }
            case SQLITE_NULL: {
               @ <td valign="top" align="center"><i>NULL</i></td>
               break;
            }
            case SQLITE_TEXT: {
               const char *zText = (const char*)sqlite3_column_text(pStmt, i);
               @ <td align="left" valign="top"
               @ style="white-space:pre;">%h(zText)</td>
               break;
            }
            case SQLITE_BLOB: {
               @ <td valign="top" align="center">
               @ <i>%d(sqlite3_column_bytes(pStmt, i))-byte BLOB</i></td>
               break;
            }
          }
        }
        @ </tr>
      }
      sqlite3_finalize(pStmt);
      @ </table>
    }
  }
  style_finish_page();
}


/*
** WEBPAGE: admin_th1
**
** Run raw TH1 commands using the web interface.  If Tcl integration was
** enabled at compile-time and the "tcl" setting is enabled, Tcl commands
** may be run as well.  Requires Admin privilege.
*/
void th1_page(void){
  const char *zQ = P("q");
  int go = P("go")!=0;
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  style_set_current_feature("setup");
  style_header("Raw TH1 Commands");
  @ <p><b>Caution:</b> There are no restrictions on the TH1 that can be
  @ run by this page.  If Tcl integration was enabled at compile-time and
  @ the "tcl" setting is enabled, Tcl commands may be run as well.</p>
  @
  form_begin(0, "%R/admin_th1");
  @ TH1:<br>
  @ <textarea name="q" rows="5" cols="80">%h(zQ)</textarea><br>
  @ <input type="submit" name="go" value="Run TH1">
  @ </form>
  if( go && cgi_csrf_safe(2) ){
    const char *zR;
    int rc;
    int n;
    @ <hr>
    rc = Th_Eval(g.interp, 0, zQ, -1);
    zR = Th_GetResult(g.interp, &n);
    if( rc==TH_OK ){
      @ <pre class="th1result">%h(zR)</pre>
    }else{
      @ <pre class="th1error">%h(zR)</pre>
    }
  }
  style_finish_page();
}

/*
** WEBPAGE: admin_log
**
** Shows the contents of the admin_log table, which is only created if
** the admin-log setting is enabled. Requires Admin or Setup ('a' or
** 's') permissions.
*/
void page_admin_log(){
  Stmt stLog;
  int limit;                 /* How many entries to show */
  int ofst;                  /* Offset to the first entry */
  int fLogEnabled;
  int counter = 0;
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_set_current_feature("setup");
  style_header("Admin Log");
  style_submenu_element("Log-Menu", "setup-logmenu");
  create_admin_log_table();
  limit = atoi(PD("n","200"));
  ofst = atoi(PD("x","0"));
  fLogEnabled = db_get_boolean("admin-log", 0);
  @ <div>Admin logging is %s(fLogEnabled?"on":"off").
  @ (Change this on the <a href="setup_settings">settings</a> page.)</div>

  if( ofst>0 ){
    int prevx = ofst - limit;
    if( prevx<0 ) prevx = 0;
    @ <p><a href="admin_log?n=%d(limit)&x=%d(prevx)">[Newer]</a></p>
  }
  db_prepare(&stLog,
    "SELECT datetime(time,'unixepoch'), who, page, what "
    "FROM admin_log "
    "ORDER BY time DESC, rowid DESC");
  style_table_sorter();
  @ <table class="sortable adminLogTable" width="100%%" \
  @  data-column-types='Tttx' data-init-sort='1'>
  @ <thead>
  @ <th>Time</th>
  @ <th>User</th>
  @ <th>Page</th>
  @ <th width="60%%">Message</th>
  @ </thead><tbody>
  while( SQLITE_ROW == db_step(&stLog) ){
    const char *zTime = db_column_text(&stLog, 0);
    const char *zUser = db_column_text(&stLog, 1);
    const char *zPage = db_column_text(&stLog, 2);
    const char *zMessage = db_column_text(&stLog, 3);
    counter++;
    if( counter<ofst ) continue;
    if( counter>ofst+limit ) break;
    @ <tr class="row%d(counter%2)">
    @ <td class="adminTime">%s(zTime)</td>
    @ <td>%s(zUser)</td>
    @ <td>%s(zPage)</td>
    @ <td>%h(zMessage)</td>
    @ </tr>
  }
  db_finalize(&stLog);
  @ </tbody></table>
  if( counter>ofst+limit ){
    @ <p><a href="admin_log?n=%d(limit)&x=%d(limit+ofst)">[Older]</a></p>
  }
  style_finish_page();
}


/*
** Renders a selection list of values for the search-tokenizer
** setting, using the form field name "ftstok".
*/
static void select_fts_tokenizer(void){
  const char *const aTokenizer[] = {
  "off",     "None",
  "porter",  "Porter Stemmer",
  "unicode61", "Unicode without stemming",
  "trigram", "Trigram",
  };
  multiple_choice_attribute("FTS Tokenizer", "search-tokenizer",
                            "ftstok", "off", 4, aTokenizer);
}

/*
** WEBPAGE: srchsetup
**
** Configure the search engine.  Requires Admin privilege.
*/
void page_srchsetup(){
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_set_current_feature("setup");
  style_header("Search Configuration");
  @ <form action="%R/srchsetup" method="post"><div>
  login_insert_csrf_secret();
  @ <div style="text-align:center;font-weight:bold;">
  @ Server-specific settings that affect the
  @ <a href="%R/search">/search</a> webpage.
  @ </div>
  @ <hr>
  textarea_attribute("Document Glob List", 3, 35, "doc-glob", "dg", "", 0);
  @ <p>The "Document Glob List" is a comma- or newline-separated list
  @ of GLOB expressions that identify all documents within the source
  @ tree that are to be searched when "Document Search" is enabled.
  @ Some examples:
  @ <table border=0 cellpadding=2 align=center>
  @ <tr><td>*.wiki,*.html,*.md,*.txt<td style="width: 4x;">
  @ <td>Search all wiki, HTML, Markdown, and Text files</tr>
  @ <tr><td>doc/*.md,*/README.txt,README.txt<td>
  @ <td>Search all Markdown files in the doc/ subfolder and all README.txt
  @ files.</tr>
  @ <tr><td>*<td><td>Search all checked-in files</tr>
  @ <tr><td><i>(blank)</i><td>
  @ <td>Search nothing. (Disables document search).</tr>
  @ </table>
  @ <hr>
  entry_attribute("Document Branches", 20, "doc-branch", "db", "trunk", 0);
  @ <p>When searching documents, use the versions of the files found at the
  @ type of the "Document Branches" branch.  Recommended value: "trunk".
  @ Document search is disabled if blank. It may be a list of branch names
  @ separated by spaces and/or commas.
  @ <hr>
  onoff_attribute("Search Check-in Comments", "search-ci", "sc", 0, 0);
  @ <br>
  onoff_attribute("Search Documents", "search-doc", "sd", 0, 0);
  @ <br>
  onoff_attribute("Search Tickets", "search-tkt", "st", 0, 0);
  @ <br>
  onoff_attribute("Search Wiki", "search-wiki", "sw", 0, 0);
  @ <br>
  onoff_attribute("Search Tech Notes", "search-technote", "se", 0, 0);
  @ <br>
  onoff_attribute("Search Forum", "search-forum", "sf", 0, 0);
  @ <hr>
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>
  @ <hr>
  if( P("fts0") ){
    search_drop_index();
  }else if( P("fts1") ){
    const char *zTokenizer = PD("ftstok","off");
    search_set_tokenizer(zTokenizer);
    search_drop_index();
    search_create_index();
    search_fill_index();
    search_update_index(search_restrict(SRCH_ALL));
  }
  if( search_index_exists() ){
    int pgsz = db_int64(0, "PRAGMA repository.page_size;");
    i64 nTotal = db_int64(0, "PRAGMA repository.page_count;")*pgsz;
    i64 nFts = db_int64(0, "SELECT count(*) FROM dbstat"
                               " WHERE schema='repository'"
                               " AND name LIKE 'fts%%'")*pgsz;
    char zSize[30];
    approxSizeName(sizeof(zSize),zSize,nFts);
    @ <p>Currently using an SQLite FTS%d(search_index_type(0)) search index.
    @ The index helps search run faster, especially on large repositories,
    @ but takes up space.  The index is currently using about %s(zSize)
    @ or %.1f(100.0*(double)nFts/(double)nTotal)%% of the repository.</p>
    select_fts_tokenizer();
    @ <p><input type="submit" name="fts0" value="Delete The Full-Text Index">
    @ <input type="submit" name="fts1" value="Rebuild The Full-Text Index">
    style_submenu_element("FTS Index Debugging","%R/test-ftsdocs");
  }else{
    @ <p>The SQLite search index is disabled.  All searching will be
    @ a full-text scan.  This usually works fine, but can be slow for
    @ larger repositories.</p>
    select_fts_tokenizer();
    @ <p><input type="submit" name="fts1" value="Create A Full-Text Index">
  }
  @ </div></form>
  style_finish_page();
}

/*
** A URL Alias originally called zOldName is now zNewName/zValue.
** Write SQL to make this change into pSql.
**
** If zNewName or zValue is an empty string, then delete the entry.
**
** If zOldName is an empty string, create a new entry.
*/
static void setup_update_url_alias(
  Blob *pSql,
  const char *zOldName,
  const char *zNewName,
  const char *zValue
){
  if( !cgi_csrf_safe(2) ) return;
  if( zNewName[0]==0 || zValue[0]==0 ){
    if( zOldName[0] ){
      blob_append_sql(pSql,
        "DELETE FROM config WHERE name='walias:%q';\n",
        zOldName);
    }
    return;
  }
  if( zOldName[0]==0 ){
    blob_append_sql(pSql,
      "INSERT INTO config(name,value,mtime) VALUES('walias:%q',%Q,now());\n",
      zNewName, zValue);
    return;
  }
  if( strcmp(zOldName, zNewName)!=0 ){
    blob_append_sql(pSql,
       "UPDATE config SET name='walias:%q', value=%Q, mtime=now()"
       " WHERE name='walias:%q';\n",
       zNewName, zValue, zOldName);
  }else{
    blob_append_sql(pSql,
       "UPDATE config SET value=%Q, mtime=now()"
       " WHERE name='walias:%q' AND value<>%Q;\n",
       zValue, zOldName, zValue);
  }
}

/*
** WEBPAGE: waliassetup
**
** Configure the URL aliases
*/
void page_waliassetup(){
  Stmt q;
  int cnt = 0;
  Blob namelist;
  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_set_current_feature("setup");
  style_header("URL Alias Configuration");
  if( P("submit")!=0 && cgi_csrf_safe(2) ){
    Blob token;
    Blob sql;
    const char *zNewName;
    const char *zValue;
    char zCnt[10];
    blob_init(&namelist, PD("namelist",""), -1);
    blob_init(&sql, 0, 0);
    while( blob_token(&namelist, &token) ){
      const char *zOldName = blob_str(&token);
      sqlite3_snprintf(sizeof(zCnt), zCnt, "n%d", cnt);
      zNewName = PD(zCnt, "");
      sqlite3_snprintf(sizeof(zCnt), zCnt, "v%d", cnt);
      zValue = PD(zCnt, "");
      setup_update_url_alias(&sql, zOldName, zNewName, zValue);
      cnt++;
      blob_reset(&token);
    }
    sqlite3_snprintf(sizeof(zCnt), zCnt, "n%d", cnt);
    zNewName = PD(zCnt,"");
    sqlite3_snprintf(sizeof(zCnt), zCnt, "v%d", cnt);
    zValue = PD(zCnt,"");
    setup_update_url_alias(&sql, "", zNewName, zValue);
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec("%s", blob_sql_text(&sql));
    db_protect_pop();
    blob_reset(&sql);
    blob_reset(&namelist);
    cnt = 0;
  }
  db_prepare(&q,
      "SELECT substr(name,8), value FROM config WHERE name GLOB 'walias:/*'"
      " UNION ALL SELECT '', ''"
  );
  @ <form action="%R/waliassetup" method="post"><div>
  login_insert_csrf_secret();
  @ <table border=0 cellpadding=5>
  @ <tr><th>Alias<th>URI That The Alias Maps Into
  blob_init(&namelist, 0, 0);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zValue = db_column_text(&q, 1);
    @ <tr><td>
    @ <input type='text' size='20' value='%h(zName)' name='n%d(cnt)'>
    @ </td><td>
    @ <input type='text' size='80' value='%h(zValue)' name='v%d(cnt)'>
    @ </td></tr>
    cnt++;
    if( blob_size(&namelist)>0 ) blob_append(&namelist, " ", 1);
    blob_append(&namelist, zName, -1);
  }
  db_finalize(&q);
  @ <tr><td>
  @ <input type='hidden' name='namelist' value='%h(blob_str(&namelist))'>
  @ <input type='submit' name='submit' value="Apply Changes">
  @ </td><td></td></tr>
  @ </table></form>
  @ <hr>
  @ <p>When the first term of an incoming URL exactly matches one of
  @ the "Aliases" on the left-hand side (LHS) above, the URL is
  @ converted into the corresponding form on the right-hand side (RHS).
  @ <ul>
  @ <li><p>
  @ The LHS is compared against only the first term of the incoming URL.
  @ All LHS entries in the alias table should therefore begin with a
  @ single "/" followed by a single path element.
  @ <li><p>
  @ The RHS entries in the alias table should begin with a single "/"
  @ followed by a path element, and optionally followed by "?" and a
  @ list of query parameters.
  @ <li><p>
  @ Query parameters on the RHS are added to the set of query parameters
  @ in the incoming URL.
  @ <li><p>
  @ If the same query parameter appears in both the incoming URL and
  @ on the RHS of the alias, the RHS query parameter value overwrites
  @ the value on the incoming URL.
  @ <li><p>
  @ If a query parameter on the RHS of the alias is of the form "X!"
  @ (a name followed by "!") then the X query parameter is removed
  @ from the incoming URL if
  @ it exists.
  @ <li><p>
  @ Only a single alias operation occurs.  It is not possible to nest aliases.
  @ The RHS entries must be built-in webpage names.
  @ <li><p>
  @ The alias table is only checked if no built-in webpage matches
  @ the incoming URL.
  @ Hence, it is not possible to override a built-in webpage using aliases.
  @ This is by design.
  @ </ul>
  @
  @ <p>To delete an entry from the alias table, change its name or value to an
  @ empty string and press "Apply Changes".
  @
  @ <p>To add a new alias, fill in the name and value in the bottom row
  @ of the table above and press "Apply Changes".
  style_finish_page();
}
Added src/setupuser.c.












































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Setup pages associated with user management.  The code in this
** file was formerly part of the "setup.c" module, but has been broken
** out into its own module to improve maintainability.
**
** Note:  Do not confuse "Users" with "Subscribers".  Code to deal with
** subscribers is over in the "alerts.c" source file.
*/
#include "config.h"
#include <assert.h>
#include "setupuser.h"

/*
** WEBPAGE: setup_ulist
**
** Show a list of users.  Clicking on any user jumps to the edit
** screen for that user.  Requires Admin privileges.
**
** Query parameters:
**
**   with=CAP         Only show users that have one or more capabilities in CAP.
**   ubg              Color backgrounds by username hash
*/
void setup_ulist(void){
  Stmt s;
  double rNow;
  const char *zWith = P("with");
  int bUnusedOnly = P("unused")!=0;
  int bUbg = P("ubg")!=0;

  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }

  style_submenu_element("Add", "setup_uedit");
  style_submenu_element("Log", "access_log");
  style_submenu_element("Help", "setup_ulist_notes");
  if( alert_tables_exist() ){
    style_submenu_element("Subscribers", "subscribers");
  }
  style_set_current_feature("setup");
  style_header("User List");
  if( (zWith==0 || zWith[0]==0) && !bUnusedOnly ){
    @ <table border=1 cellpadding=2 cellspacing=0 class='userTable'>
    @ <thead><tr>
    @   <th>Category
    @   <th>Capabilities (<a href='%R/setup_ucap_list'>key</a>)
    @   <th>Info <th>Last Change</tr></thead>
    @ <tbody>
    db_prepare(&s,
       "SELECT uid, login, cap, date(mtime,'unixepoch')"
       "  FROM user"
       " WHERE login IN ('anonymous','nobody','developer','reader')"
       " ORDER BY login"
    );
    while( db_step(&s)==SQLITE_ROW ){
      int uid = db_column_int(&s, 0);
      const char *zLogin = db_column_text(&s, 1);
      const char *zCap = db_column_text(&s, 2);
      const char *zDate = db_column_text(&s, 4);
      @ <tr>
      @ <td><a href='setup_uedit?id=%d(uid)'>%h(zLogin)</a>
      @ <td>%h(zCap)

      if( fossil_strcmp(zLogin,"anonymous")==0 ){
        @ <td>All logged-in users
      }else if( fossil_strcmp(zLogin,"developer")==0 ){
        @ <td>Users with '<b>v</b>' capability
      }else if( fossil_strcmp(zLogin,"nobody")==0 ){
        @ <td>All users without login
      }else if( fossil_strcmp(zLogin,"reader")==0 ){
        @ <td>Users with '<b>u</b>' capability
      }else{
        @ <td>
      }
      if( zDate && zDate[0] ){
        @ <td>%h(zDate)
      }else{
        @ <td>
      }
      @ </tr>
    }
    db_finalize(&s);
    @ </tbody></table>
    @ <div class='section'>Users</div>
  }else{
    style_submenu_element("All Users", "setup_ulist");
    if( bUnusedOnly ){
      @ <div class='section'>Unused logins</div>
    }else if( zWith ){
      if( zWith[1]==0 ){
        @ <div class='section'>Users with capability "%h(zWith)"</div>
      }else{
        @ <div class='section'>Users with any capability in "%h(zWith)"</div>
      }
    }
  }
  if( !bUnusedOnly ){
    style_submenu_element("Unused", "setup_ulist?unused");
  }
  @ <table border=1 cellpadding=2 cellspacing=0 class='userTable sortable' \
  @  data-column-types='ktxTTKt' data-init-sort='2'>
  @ <thead><tr>
  @ <th>Login Name<th>Caps<th>Info<th>Date<th>Expire<th>Last Login\
  @ <th>Alerts</tr></thead>
  @ <tbody>
  db_multi_exec(
    "CREATE TEMP TABLE lastAccess(uname TEXT PRIMARY KEY, atime REAL)"
    "WITHOUT ROWID;"
  );
  if( db_table_exists("repository","accesslog") ){
    db_multi_exec(
      "INSERT INTO lastAccess(uname, atime)"
      " SELECT uname, max(mtime) FROM ("
      "    SELECT uname, mtime FROM accesslog WHERE success"
      "    UNION ALL"
      "    SELECT login AS uname, rcvfrom.mtime AS mtime"
      "      FROM rcvfrom JOIN user USING(uid))"
      " GROUP BY 1;"
    );
  }
  if( !db_table_exists("repository","subscriber") ){
    db_multi_exec(
      "CREATE TEMP TABLE subscriber(suname PRIMARY KEY, ssub, subscriberId)"
      "WITHOUT ROWID;"
    );
  }
  if( bUnusedOnly ){
    zWith = mprintf(
        " AND login NOT IN ("
        "SELECT user FROM event WHERE user NOT NULL "
        "UNION ALL SELECT euser FROM event WHERE euser NOT NULL%s)"
        " AND uid NOT IN (SELECT uid FROM rcvfrom)",
        alert_tables_exist() ?
          " UNION ALL SELECT suname FROM subscriber WHERE suname NOT NULL":"");
  }else if( zWith && zWith[0] ){
    zWith = mprintf(" AND fullcap(cap) GLOB '*[%q]*'", zWith);
  }else{
    zWith = "";
  }
  db_prepare(&s,
     "SELECT uid, login, cap, info, date(user.mtime,'unixepoch'),"
     "       lower(login) AS sortkey, "
     "       CASE WHEN info LIKE '%%expires 20%%'"
             "    THEN substr(info,instr(lower(info),'expires')+8,10)"
             "    END AS exp,"
             "atime,"
     "       subscriber.ssub, subscriber.subscriberId"
     "  FROM user LEFT JOIN lastAccess ON login=uname"
     "            LEFT JOIN subscriber ON login=suname"
     " WHERE login NOT IN ('anonymous','nobody','developer','reader') %s"
     " ORDER BY sortkey", zWith/*safe-for-%s*/
  );
  rNow = db_double(0.0, "SELECT julianday('now');");
  while( db_step(&s)==SQLITE_ROW ){
    int uid = db_column_int(&s, 0);
    const char *zLogin = db_column_text(&s, 1);
    const char *zCap = db_column_text(&s, 2);
    const char *zInfo = db_column_text(&s, 3);
    const char *zDate = db_column_text(&s, 4);
    const char *zSortKey = db_column_text(&s,5);
    const char *zExp = db_column_text(&s,6);
    double rATime = db_column_double(&s,7);
    char *zAge = 0;
    const char *zSub;
    int sid = db_column_int(&s,9);
    if( rATime>0.0 ){
      zAge = human_readable_age(rNow - rATime);
    }
    if( bUbg ){
      @ <tr style='background-color: %h(user_color(zLogin));'>
    }else{
      @ <tr>
    }
    @ <td data-sortkey='%h(zSortKey)'>\
    @ <a href='setup_uedit?id=%d(uid)'>%h(zLogin)</a>
    @ <td>%h(zCap)
    @ <td>%h(zInfo)
    @ <td>%h(zDate?zDate:"")
    @ <td>%h(zExp?zExp:"")
    @ <td data-sortkey='%f(rATime)' style='white-space:nowrap'>%s(zAge?zAge:"")
    if( db_column_type(&s,8)==SQLITE_NULL ){
      @ <td>
    }else if( (zSub = db_column_text(&s,8))==0 || zSub[0]==0 ){
      @ <td><a href="%R/alerts?sid=%d(sid)"><i>off</i></a>
    }else{
      @ <td><a href="%R/alerts?sid=%d(sid)">%h(zSub)</a>
    }

    @ </tr>
    fossil_free(zAge);
  }
  @ </tbody></table>
  db_finalize(&s);
  style_table_sorter();
  style_finish_page();
}

/*
** WEBPAGE: setup_ulist_notes
**
** A documentation page showing notes about user configuration.  This
** information used to be a side-bar on the user list page, but has been
** factored out for improved presentation.
*/
void setup_ulist_notes(void){
  style_set_current_feature("setup");
  style_header("User Configuration Notes");
  @ <h1>User Configuration Notes:</h1>
  @ <ol>
  @ <li><p>
  @ Every user, logged in or not, inherits the privileges of
  @ <span class="usertype">nobody</span>.
  @ </p></li>
  @
  @ <li><p>
  @ Any human can login as <span class="usertype">anonymous</span> since the
  @ password is clearly displayed on the login page for them to type. The
  @ purpose of requiring anonymous to log in is to prevent access by spiders.
  @ Every logged-in user inherits the combined privileges of
  @ <span class="usertype">anonymous</span> and
  @ <span class="usertype">nobody</span>.
  @ </p></li>
  @
  @ <li><p>
  @ Users with privilege <span class="capability">u</span> inherit the combined
  @ privileges of <span class="usertype">reader</span>,
  @ <span class="usertype">anonymous</span>, and
  @ <span class="usertype">nobody</span>.
  @ </p></li>
  @
  @ <li><p>
  @ Users with privilege <span class="capability">v</span> inherit the combined
  @ privileges of <span class="usertype">developer</span>,
  @ <span class="usertype">anonymous</span>, and
  @ <span class="usertype">nobody</span>.
  @ </p></li>
  @
  @ <li><p>The permission flags are as follows:</p>
  capabilities_table(CAPCLASS_ALL);
  @ </li>
  @ </ol>
  style_finish_page();
}

/*
** WEBPAGE: setup_ucap_list
**
** A documentation page showing the meaning of the various user capabilities
** code letters.
*/
void setup_ucap_list(void){
  style_set_current_feature("setup");
  style_header("User Capability Codes");
  @ <h1>All capabilities</h1>
  capabilities_table(CAPCLASS_ALL);
  @ <h1>Capabilities associated with checked-in content</h1>
  capabilities_table(CAPCLASS_CODE);
  @ <h1>Capabilities associated with data transfer and sync</h1>
  capabilities_table(CAPCLASS_DATA);
  @ <h1>Capabilities associated with the forum</h1>
  capabilities_table(CAPCLASS_FORUM);
  @ <h1>Capabilities associated with tickets</h1>
  capabilities_table(CAPCLASS_TKT);
  @ <h1>Capabilities associated with wiki</h1>
  capabilities_table(CAPCLASS_WIKI);
  @ <h1>Administrative capabilities</h1>
  capabilities_table(CAPCLASS_SUPER);
  @ <h1>Miscellaneous capabilities</h1>
  capabilities_table(CAPCLASS_OTHER);
  style_finish_page();
}

/*
** Return true if zPw is a valid password string.  A valid
** password string is:
**
**  (1)  A zero-length string, or
**  (2)  a string that contains a character other than '*'.
*/
static int isValidPwString(const char *zPw){
  if( zPw==0 ) return 0;
  if( zPw[0]==0 ) return 1;
  while( zPw[0]=='*' ){ zPw++; }
  return zPw[0]!=0;
}

/*
** WEBPAGE: setup_uedit
**
** Edit information about a user or create a new user.
** Requires Admin privileges.
*/
void user_edit(void){
  const char *zId, *zLogin, *zInfo, *zCap, *zPw;
  const char *zGroup;
  const char *zOldLogin;
  int uid, i;
  char *zDeleteVerify = 0;   /* Delete user verification text */
  int higherUser = 0;  /* True if user being edited is SETUP and the */
                       /* user doing the editing is ADMIN.  Disallow editing */
  const char *inherit[128];
  int a[128];
  const char *oa[128];

  /* Must have ADMIN privileges to access this page
  */
  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }

  /* Check to see if an ADMIN user is trying to edit a SETUP account.
  ** Don't allow that.
  */
  zId = PD("id", "0");
  uid = atoi(zId);
  if( zId && !g.perm.Setup && uid>0 ){
    char *zOldCaps;
    zOldCaps = db_text(0, "SELECT cap FROM user WHERE uid=%d",uid);
    higherUser = zOldCaps && strchr(zOldCaps,'s');
  }

  if( P("can") ){
    /* User pressed the cancel button */
    cgi_redirect(cgi_referer("setup_ulist"));
    return;
  }

  /* Check for requests to delete the user */
  if( P("delete") && cgi_csrf_safe(2) ){
    int n;
    if( P("verifydelete") ){
      /* Verified delete user request */
      db_unprotect(PROTECT_USER);
      if( alert_tables_exist() ){
        /* Also delete any subscriptions associated with this user */
        db_multi_exec("DELETE FROM subscriber WHERE suname="
                      "(SELECT login FROM user WHERE uid=%d)", uid);
      }
      db_multi_exec("DELETE FROM user WHERE uid=%d", uid);
      db_protect_pop();
      moderation_disapprove_for_missing_users();
      admin_log("Deleted user [%s] (uid %d).",
                PD("login","???")/*safe-for-%s*/, uid);
      cgi_redirect(cgi_referer("setup_ulist"));
      return;
    }
    n = db_int(0, "SELECT count(*) FROM event"
                  " WHERE user=%Q AND objid NOT IN private",
                  P("login"));
    if( n==0 ){
      zDeleteVerify = mprintf("Check this box and press \"Delete User\" again");
    }else{
      zDeleteVerify = mprintf(
        "User \"%s\" has %d or more artifacts in the block-chain. "
        "Delete anyhow?",
        P("login")/*safe-for-%s*/, n);
    }
  }

  style_set_current_feature("setup");

  /* If we have all the necessary information, write the new or
  ** modified user record.  After writing the user record, redirect
  ** to the page that displays a list of users.
  */
  if( !cgi_all("login","info","pw","apply") ){
    /* need all of the above properties to make a change.  Since one or
    ** more are missing, no-op */
  }else if( higherUser ){
    /* An Admin (a) user cannot edit a Superuser (s) */
  }else if( zDeleteVerify!=0 ){
    /* Need to verify a delete request */
  }else if( !cgi_csrf_safe(2) ){
    /* This might be a cross-site request forgery, so ignore it */
  }else{
    /* We have all the information we need to make the change to the user */
    char c;
    char zCap[70], zNm[4];
    zNm[0] = 'a';
    zNm[2] = 0;
    for(i=0, c='a'; c<='z'; c++){
      zNm[1] = c;
      a[c&0x7f] = ((c!='s' && c!='y') || g.perm.Setup) && P(zNm)!=0;
      if( a[c&0x7f] ) zCap[i++] = c;
    }
    for(c='0'; c<='9'; c++){
      zNm[1] = c;
      a[c&0x7f] = P(zNm)!=0;
      if( a[c&0x7f] ) zCap[i++] = c;
    }
    for(c='A'; c<='Z'; c++){
      zNm[1] = c;
      a[c&0x7f] = P(zNm)!=0;
      if( a[c&0x7f] ) zCap[i++] = c;
    }

    zCap[i] = 0;
    zPw = P("pw");
    zLogin = P("login");
    if( strlen(zLogin)==0 ){
      const char *zRef = cgi_referer("setup_ulist");
      style_header("User Creation Error");
      @ <span class="loginError">Empty login not allowed.</span>
      @
      @ <p><a href="setup_uedit?id=%d(uid)&referer=%T(zRef)">
      @ [Bummer]</a></p>
      style_finish_page();
      return;
    }
    if( isValidPwString(zPw) ){
      zPw = sha1_shared_secret(zPw, zLogin, 0);
    }else{
      zPw = db_text(0, "SELECT pw FROM user WHERE uid=%d", uid);
    }
    zOldLogin = db_text(0, "SELECT login FROM user WHERE uid=%d", uid);
    if( db_exists("SELECT 1 FROM user WHERE login=%Q AND uid!=%d",zLogin,uid) ){
      const char *zRef = cgi_referer("setup_ulist");
      style_header("User Creation Error");
      @ <span class="loginError">Login "%h(zLogin)" is already used by
      @ a different user.</span>
      @
      @ <p><a href="setup_uedit?id=%d(uid)&referer=%T(zRef)">
      @ [Bummer]</a></p>
      style_finish_page();
      return;
    }
    cgi_csrf_verify();
    db_unprotect(PROTECT_USER);
    db_multi_exec(
       "REPLACE INTO user(uid,login,info,pw,cap,mtime) "
       "VALUES(nullif(%d,0),%Q,%Q,%Q,%Q,now())",
      uid, zLogin, P("info"), zPw, zCap
    );
    if( zOldLogin && fossil_strcmp(zLogin, zOldLogin)!=0 ){
      if( alert_tables_exist() ){
        /* Rename matching subscriber entry, else the user cannot
           re-subscribe with their same email address. */
        db_multi_exec("UPDATE subscriber SET suname=%Q WHERE suname=%Q",
                      zLogin, zOldLogin);
      }
      admin_log( "Renamed user [%q] to [%q].", zOldLogin, zLogin );
    }
    db_protect_pop();
    setup_incr_cfgcnt();
    admin_log( "Updated user [%q] with capabilities [%q].",
               zLogin, zCap );
    if( atoi(PD("all","0"))>0 ){
      Blob sql;
      char *zErr = 0;
      blob_zero(&sql);
      if( zOldLogin==0 ){
        blob_appendf(&sql,
          "INSERT INTO user(login)"
          "  SELECT %Q WHERE NOT EXISTS(SELECT 1 FROM user WHERE login=%Q);",
          zLogin, zLogin
        );
        zOldLogin = zLogin;
      }
#if 0
      /* Problem: when renaming a user we need to update the subcriber
      ** names to match but we cannot know from here if each member of
      ** the login group has the subscriber tables, so we cannot blindly
      ** include this SQL. */
      else if( fossil_strcmp(zLogin, zOldLogin)!=0
               && alert_tables_exist() ){
        /* Rename matching subscriber entry, else the user cannot
           re-subscribe with their same email address. */
        blob_appendf(&sql,
                     "UPDATE subscriber SET suname=%Q WHERE suname=%Q;",
                     zLogin, zOldLogin);
      }
#endif
      blob_appendf(&sql,
        "UPDATE user SET login=%Q,"
        "  pw=coalesce(shared_secret(%Q,%Q,"
                "(SELECT value FROM config WHERE name='project-code')),pw),"
        "  info=%Q,"
        "  cap=%Q,"
        "  mtime=now()"
        " WHERE login=%Q;",
        zLogin, P("pw"), zLogin, P("info"), zCap,
        zOldLogin
      );
      db_unprotect(PROTECT_USER);
      login_group_sql(blob_str(&sql), "<li> ", " </li>\n", &zErr);
      db_protect_pop();
      blob_reset(&sql);
      admin_log( "Updated user [%q] in all login groups "
                 "with capabilities [%q].",
                 zLogin, zCap );
      if( zErr ){
        const char *zRef = cgi_referer("setup_ulist");
        style_header("User Change Error");
        admin_log( "Error updating user '%q': %s'.", zLogin, zErr );
        @ <span class="loginError">%h(zErr)</span>
        @
        @ <p><a href="setup_uedit?id=%d(uid)&referer=%T(zRef)">
        @ [Bummer]</a></p>
        style_finish_page();
        return;
      }
    }
    cgi_redirect(cgi_referer("setup_ulist"));
    return;
  }

  /* Load the existing information about the user, if any
  */
  zLogin = "";
  zInfo = "";
  zCap = "";
  zPw = "";
  for(i='a'; i<='z'; i++) oa[i] = "";
  for(i='0'; i<='9'; i++) oa[i] = "";
  for(i='A'; i<='Z'; i++) oa[i] = "";
  if( uid ){
    zLogin = db_text("", "SELECT login FROM user WHERE uid=%d", uid);
    zInfo = db_text("", "SELECT info FROM user WHERE uid=%d", uid);
    zCap = db_text("", "SELECT cap FROM user WHERE uid=%d", uid);
    zPw = db_text("", "SELECT pw FROM user WHERE uid=%d", uid);
    for(i=0; zCap[i]; i++){
      char c = zCap[i];
      if( (c>='a' && c<='z') || (c>='0' && c<='9') || (c>='A' && c<='Z') ){
        oa[c&0x7f] = " checked=\"checked\"";
      }
    }
  }

  /* figure out inherited permissions */
  memset((char *)inherit, 0, sizeof(inherit));
  if( fossil_strcmp(zLogin, "developer") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='developer'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] =
         "<span class=\"ueditInheritDeveloper\"><sub>[D]</sub></span>";
    }
    free(z2);
  }
  if( fossil_strcmp(zLogin, "reader") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='reader'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] =
          "<span class=\"ueditInheritReader\"><sub>[R]</sub></span>";
    }
    free(z2);
  }
  if( fossil_strcmp(zLogin, "anonymous") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='anonymous'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] =
           "<span class=\"ueditInheritAnonymous\"><sub>[A]</sub></span>";
    }
    free(z2);
  }
  if( fossil_strcmp(zLogin, "nobody") ){
    char *z1, *z2;
    z1 = z2 = db_text(0,"SELECT cap FROM user WHERE login='nobody'");
    while( z1 && *z1 ){
      inherit[0x7f & *(z1++)] =
           "<span class=\"ueditInheritNobody\"><sub>[N]</sub></span>";
    }
    free(z2);
  }

  /* Begin generating the page
  */
  style_submenu_element("Cancel", "%s", cgi_referer("setup_ulist"));
  if( uid ){
    style_header("Edit User %h", zLogin);
    if( !login_is_special(zLogin) ){
      style_submenu_element("Access Log", "%R/access_log?u=%t", zLogin);
      style_submenu_element("Timeline","%R/timeline?u=%t", zLogin);
    }
  }else{
    style_header("Add A New User");
  }
  @ <div class="ueditCapBox">
  @ <form action="%s(g.zPath)" method="post"><div>
  login_insert_csrf_secret();
  if( login_is_special(zLogin) ){
    @ <input type="hidden" name="login" value="%s(zLogin)">
    @ <input type="hidden" name="info" value="">
    @ <input type="hidden" name="pw" value="*">
  }
  @ <input type="hidden" name="referer" value="%h(cgi_referer("setup_ulist"))">
  @ <table width="100%%">
  @ <tr>
  @   <td class="usetupEditLabel" id="suuid">User ID:</td>
  if( uid ){
    @   <td>%d(uid) <input aria-labelledby="suuid" type="hidden" \
    @   name="id" value="%d(uid)"/>\
    @ </td>
  }else{
    @   <td>(new user)<input aria-labelledby="suuid" type="hidden" name="id" \
    @ value="0"></td>
  }
  @ </tr>
  @ <tr>
  @   <td class="usetupEditLabel" id="sulgn">Login:</td>
  if( login_is_special(zLogin) ){
    @    <td><b>%h(zLogin)</b></td>
  }else{
    @   <td><input aria-labelledby="sulgn" type="text" name="login" \
    @ value="%h(zLogin)">
    if( alert_tables_exist() ){
      int sid;
      sid = db_int(0, "SELECT subscriberId FROM subscriber"
                      " WHERE suname=%Q", zLogin);
      if( sid>0 ){
        @ &nbsp;&nbsp;<a href="%R/alerts?sid=%d(sid)">\
        @ (subscription info for %h(zLogin))</a>\
      }
    }
    @ </td></tr>
    @ <tr>
    @   <td class="usetupEditLabel" id="sucnfo">Contact&nbsp;Info:</td>
    @   <td><textarea aria-labelledby="sucnfo" name="info" cols="40" \
    @ rows="2">%h(zInfo)</textarea></td>
  }
  @ </tr>
  @ <tr>
  @   <td class="usetupEditLabel">Capabilities:</td>
  @   <td width="100%%">
#define B(x) inherit[x]
  @ <div class="columns" style="column-width:13em;">
  @ <ul style="list-style-type: none;">
  if( g.perm.Setup ){
    @  <li><label><input type="checkbox" name="as"%s(oa['s'])>
    @  Setup%s(B('s'))</label>
  }
  @  <li><label><input type="checkbox" name="aa"%s(oa['a'])>
  @  Admin%s(B('a'))</label>
  @  <li><label><input type="checkbox" name="au"%s(oa['u'])>
  @  Reader%s(B('u'))</label>
  @  <li><label><input type="checkbox" name="av"%s(oa['v'])>
  @  Developer%s(B('v'))</label>
#if 0  /* Not Used */
  @  <li><label><input type="checkbox" name="ad"%s(oa['d'])>
  @  Delete%s(B('d'))</label>
#endif
  @  <li><label><input type="checkbox" name="ae"%s(oa['e'])>
  @  View-PII%s(B('e'))</label>
  @  <li><label><input type="checkbox" name="ap"%s(oa['p'])>
  @  Password%s(B('p'))</label>
  @  <li><label><input type="checkbox" name="ai"%s(oa['i'])>
  @  Check-In%s(B('i'))</label>
  @  <li><label><input type="checkbox" name="ao"%s(oa['o'])>
  @  Check-Out%s(B('o'))</label>
  @  <li><label><input type="checkbox" name="ah"%s(oa['h'])>
  @  Hyperlinks%s(B('h'))</label>
  @  <li><label><input type="checkbox" name="ab"%s(oa['b'])>
  @  Attachments%s(B('b'))</label>
  @  <li><label><input type="checkbox" name="ag"%s(oa['g'])>
  @  Clone%s(B('g'))</label>
  @  <li><label><input type="checkbox" name="aj"%s(oa['j'])>
  @  Read Wiki%s(B('j'))</label>
  @  <li><label><input type="checkbox" name="af"%s(oa['f'])>
  @  New Wiki%s(B('f'))</label>
  @  <li><label><input type="checkbox" name="am"%s(oa['m'])>
  @  Append Wiki%s(B('m'))</label>
  @  <li><label><input type="checkbox" name="ak"%s(oa['k'])>
  @  Write Wiki%s(B('k'))</label>
  @  <li><label><input type="checkbox" name="al"%s(oa['l'])>
  @  Moderate Wiki%s(B('l'))</label>
  @  <li><label><input type="checkbox" name="ar"%s(oa['r'])>
  @  Read Ticket%s(B('r'))</label>
  @  <li><label><input type="checkbox" name="an"%s(oa['n'])>
  @  New Tickets%s(B('n'))</label>
  @  <li><label><input type="checkbox" name="ac"%s(oa['c'])>
  @  Append To Ticket%s(B('c'))</label>
  @  <li><label><input type="checkbox" name="aw"%s(oa['w'])>
  @  Write Tickets%s(B('w'))</label>
  @  <li><label><input type="checkbox" name="aq"%s(oa['q'])>
  @  Moderate Tickets%s(B('q'))</label>
  @  <li><label><input type="checkbox" name="at"%s(oa['t'])>
  @  Ticket Report%s(B('t'))</label>
  @  <li><label><input type="checkbox" name="ax"%s(oa['x'])>
  @  Private%s(B('x'))</label>
  @  <li><label><input type="checkbox" name="ay"%s(oa['y'])>
  @  Write Unversioned%s(B('y'))</label>
  @  <li><label><input type="checkbox" name="az"%s(oa['z'])>
  @  Download Zip%s(B('z'))</label>
  @  <li><label><input type="checkbox" name="a2"%s(oa['2'])>
  @  Read Forum%s(B('2'))</label>
  @  <li><label><input type="checkbox" name="a3"%s(oa['3'])>
  @  Write Forum%s(B('3'))</label>
  @  <li><label><input type="checkbox" name="a4"%s(oa['4'])>
  @  WriteTrusted Forum%s(B('4'))</label>
  @  <li><label><input type="checkbox" name="a5"%s(oa['5'])>
  @  Moderate Forum%s(B('5'))</label>
  @  <li><label><input type="checkbox" name="a6"%s(oa['6'])>
  @  Supervise Forum%s(B('6'))</label>
  @  <li><label><input type="checkbox" name="a7"%s(oa['7'])>
  @  Email Alerts%s(B('7'))</label>
  @  <li><label><input type="checkbox" name="aA"%s(oa['A'])>
  @  Send Announcements%s(B('A'))</label>
  @  <li><label><input type="checkbox" name="aC"%s(oa['C'])>
  @  Chatroom%s(B('C'))</label>
  @  <li><label><input type="checkbox" name="aD"%s(oa['D'])>
  @  Enable Debug%s(B('D'))</label>
  @ </ul></div>
  @   </td>
  @ </tr>
  @ <tr>
  @   <td class="usetupEditLabel">Selected Cap:</td>
  @   <td>
  @     <span id="usetupEditCapability">(missing JS?)</span>
  @     <a href="%R/setup_ucap_list">(key)</a>
  @   </td>
  @ </tr>
  if( !login_is_special(zLogin) ){
    @ <tr>
    @   <td align="right" id="supw">Password:</td>
    if( zPw[0] ){
      /* Obscure the password for all users */
      @   <td><input aria-labelledby="supw" type="password" autocomplete="off" \
      @   name="pw" value="**********">
      @   (Leave unchanged to retain password)</td>
    }else{
      /* Show an empty password as an empty input field */
      char *zRPW = fossil_random_password(12);
      @   <td><input aria-labelledby="supw" type="password" name="pw" \
      @   autocomplete="off" value=""> Password suggestion: %z(zRPW)</td>
    }
    @ </tr>
  }
  zGroup = login_group_name();
  if( zGroup ){
    @ <tr>
    @ <td valign="top" align="right">Scope:</td>
    @ <td valign="top">
    @ <input type="radio" name="all" checked value="0">
    @ Apply changes to this repository only.<br>
    @ <input type="radio" name="all" value="1">
    @ Apply changes to all repositories in the "<b>%h(zGroup)</b>"
    @ login group.</td></tr>
  }
  if( !higherUser ){
    if( zDeleteVerify ){
      @ <tr>
      @   <td valign="top" align="right">Verify:</td>
      @   <td><label><input type="checkbox" name="verifydelete">\
      @   Confirm Delete \
      @   <span class="loginError">&larr; %h(zDeleteVerify)</span>
      @   </label></td>
      @ <tr>
    }
    @ <tr>
    @   <td>&nbsp;</td>
    @   <td><input type="submit" name="apply" value="Apply Changes">
    if( !login_is_special(zLogin) ){
      @   <input type="submit" name="delete" value="Delete User">
    }
    @   <input type="submit" name="can" value="Cancel"></td>
    @ </tr>
  }
  @ </table>
  @ </div></form>
  @ </div>
  builtin_request_js("useredit.js");
  @ <hr>
  @ <h1>Notes On Privileges And Capabilities:</h1>
  @ <ul>
  if( higherUser ){
    @ <li><p class="missingPriv">
    @ User %h(zLogin) has Setup privileges and you only have Admin privileges
    @ so you are not permitted to make changes to %h(zLogin).
    @ </p></li>
    @
  }
  @ <li><p>
  @ The <span class="capability">Setup</span> user can make arbitrary
  @ configuration changes. An <span class="usertype">Admin</span> user
  @ can add other users and change user privileges
  @ and reset user passwords.  Both automatically get all other privileges
  @ listed below.  Use these two settings with discretion.
  @ </p></li>
  @
  @ <li><p>
  @ The "<span class="ueditInheritNobody"><sub>N</sub></span>" subscript suffix
  @ indicates the privileges of <span class="usertype">nobody</span> that
  @ are available to all users regardless of whether or not they are logged in.
  @ </p></li>
  @
  @ <li><p>
  @ The "<span class="ueditInheritAnonymous"><sub>A</sub></span>"
  @ subscript suffix
  @ indicates the privileges of <span class="usertype">anonymous</span> that
  @ are inherited by all logged-in users.
  @ </p></li>
  @
  @ <li><p>
  @ The "<span class="ueditInheritDeveloper"><sub>D</sub></span>"
  @ subscript suffix indicates the privileges of
  @ <span class="usertype">developer</span> that
  @ are inherited by all users with the
  @ <span class="capability">Developer</span> privilege.
  @ </p></li>
  @
  @ <li><p>
  @ The "<span class="ueditInheritReader"><sub>R</sub></span>" subscript suffix
  @ indicates the privileges of <span class="usertype">reader</span> that
  @ are inherited by all users with the <span class="capability">Reader</span>
  @ privilege.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">Delete</span> privilege give the user the
  @ ability to erase wiki, tickets, and attachments that have been added
  @ by anonymous users.  This capability is intended for deletion of spam.
  @ The delete capability is only in effect for 24 hours after the item
  @ is first posted.  The <span class="usertype">Setup</span> user can
  @ delete anything at any time.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">Hyperlinks</span> privilege allows a user
  @ to see most hyperlinks. This is recommended ON for most logged-in users
  @ but OFF for user "nobody" to avoid problems with spiders trying to walk
  @ every diff and annotation of every historical check-in and file.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">Zip</span> privilege allows a user to
  @ see the "download as ZIP"
  @ hyperlink and permits access to the <tt>/zip</tt> page.  This allows
  @ users to download ZIP archives without granting other rights like
  @ <span class="capability">Read</span> or
  @ <span class="capability">Hyperlink</span>.  The "z" privilege is recommended
  @ for user <span class="usertype">nobody</span> so that automatic package
  @ downloaders can obtain the sources without going through the login
  @ procedure.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">Check-in</span> privilege allows remote
  @ users to "push". The <span class="capability">Check-out</span> privilege
  @ allows remote users to "pull". The <span class="capability">Clone</span>
  @ privilege allows remote users to "clone".
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">Read Wiki</span>,
  @ <span class="capability">New Wiki</span>,
  @ <span class="capability">Append Wiki</span>, and
  @ <b>Write Wiki</b> privileges control access to wiki pages.  The
  @ <span class="capability">Read Ticket</span>,
  @ <span class="capability">New Ticket</span>,
  @ <span class="capability">Append Ticket</span>, and
  @ <span class="capability">Write Ticket</span> privileges control access
  @ to trouble tickets.
  @ The <span class="capability">Ticket Report</span> privilege allows
  @ the user to create or edit ticket report formats.
  @ </p></li>
  @
  @ <li><p>
  @ Users with the <span class="capability">Password</span> privilege
  @ are allowed to change their own password.  Recommended ON for most
  @ users but OFF for special users <span class="usertype">developer</span>,
  @ <span class="usertype">anonymous</span>,
  @ and <span class="usertype">nobody</span>.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">View-PII</span> privilege allows the display
  @ of personally-identifiable information information such as the
  @ email address of users and contact
  @ information on tickets. Recommended OFF for
  @ <span class="usertype">anonymous</span> and for
  @ <span class="usertype">nobody</span> but ON for
  @ <span class="usertype">developer</span>.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="capability">Attachment</span> privilege is needed in
  @ order to add attachments to tickets or wiki.  Write privilege on the
  @ ticket or wiki is also required.
  @ </p></li>
  @
  @ <li><p>
  @ Login is prohibited if the password is an empty string.
  @ </p></li>
  @ </ul>
  @
  @ <h2>Special Logins</h2>
  @
  @ <ul>
  @ <li><p>
  @ No login is required for user <span class="usertype">nobody</span>. The
  @ capabilities of the <span class="usertype">nobody</span> user are
  @ inherited by all users, regardless of whether or not they are logged in.
  @ To disable universal access to the repository, make sure that the
  @ <span class="usertype">nobody</span> user has no capabilities
  @ enabled. The password for <span class="usertype">nobody</span> is ignored.
  @ </p></li>
  @
  @ <li><p>
  @ Login is required for user <span class="usertype">anonymous</span> but the
  @ password is displayed on the login screen beside the password entry box
  @ so anybody who can read should be able to login as anonymous.
  @ On the other hand, spiders and web-crawlers will typically not
  @ be able to login.  Set the capabilities of the
  @ <span class="usertype">anonymous</span>
  @ user to things that you want any human to be able to do, but not any
  @ spider.  Every other logged-in user inherits the privileges of
  @ <span class="usertype">anonymous</span>.
  @ </p></li>
  @
  @ <li><p>
  @ The <span class="usertype">developer</span> user is intended as a template
  @ for trusted users with check-in privileges. When adding new trusted users,
  @ simply select the <span class="capability">developer</span> privilege to
  @ cause the new user to inherit all privileges of the
  @ <span class="usertype">developer</span>
  @ user.  Similarly, the <span class="usertype">reader</span> user is a
  @ template for users who are allowed more access than
  @ <span class="usertype">anonymous</span>,
  @ but less than a <span class="usertype">developer</span>.
  @ </p></li>
  @ </ul>
  style_finish_page();
}

/*
** WEBPAGE: setup_uinfo
**
** Detailed information about a user account, available to administrators
** only.
**
**    u=UID
**    l=LOGIN
*/
void setup_uinfo_page(void){
  Stmt q;
  Blob sql;
  const char *zLogin;
  int uid;

  /* Must have ADMIN privileges to access this page
  */
  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }
  style_set_current_feature("setup");
  zLogin = P("l");
  uid = atoi(PD("u","0"));
  if( zLogin==0 && uid==0 ){
    uid = db_int(1,"SELECT uid FROM user");
  }
  blob_init(&sql, 0, 0);
  blob_append_sql(&sql,
    "SELECT "
       /*  0 */ "uid,"
       /*  1 */ "login,"
       /*  2 */ "cap,"
       /*  3 */ "cookie,"
       /*  4 */ "datetime(cexpire),"
       /*  5 */ "info,"
       /*  6 */ "datetime(user.mtime,'unixepoch'),"
  );
  if( db_table_exists("repository","subscriber") ){
    blob_append_sql(&sql,
      /*  7 */ "subscriberId,"
      /*  8 */ "semail,"
      /*  9 */ "sverified,"
      /* 10 */ "date(lastContact+2440587.5)"
      " FROM user LEFT JOIN subscriber ON suname=login"
    );
  }else{
    blob_append_sql(&sql,
      /*  7 */ "NULL,"
      /*  8 */ "NULL,"
      /*  9 */ "NULL,"
      /* 10 */ "NULL"
      " FROM user"
    );
  }
  if( zLogin!=0 ){
    blob_append_sql(&sql, " WHERE login=%Q", zLogin);
  }else{
    blob_append_sql(&sql, " WHERE uid=%d", uid);
  }
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_zero(&sql);
  if( db_step(&q)!=SQLITE_ROW ){
    style_header("No Such User");
    if( zLogin ){
      @ <p>Cannot find any information on user %h(zLogin).
    }else{
      @ <p>Cannot find any information on userid %d(uid).
    }
    style_finish_page();
    db_finalize(&q);
    return;
  }
  style_header("User %h", db_column_text(&q,1));
  @ <table class="label-value">
  @ <tr><th>uid:</th><td>%d(db_column_int(&q,0))
  @  (<a href="%R/setup_uedit?id=%d(db_column_int(&q,0))">edit</a>)</td></tr>
  @ <tr><th>login:</th><td>%h(db_column_text(&q,1))</td></tr>
  @ <tr><th>capabilities:</th><td>%h(db_column_text(&q,2))</th></tr>
  @ <tr><th valign="top">info:</th>
  @ <td valign="top"><span style='white-space:pre-line;'>\
  @ %h(db_column_text(&q,5))</span></td></tr>
  @ <tr><th>user.mtime:</th><td>%h(db_column_text(&q,6))</td></tr>
  if( db_column_type(&q,7)!=SQLITE_NULL ){
    @ <tr><th>subscriberId:</th><td>%d(db_column_int(&q,7))
    @  (<a href="%R/alerts?sid=%d(db_column_int(&q,7))">edit</a>)</td></tr>
    @ <tr><th>semail:</th><td>%h(db_column_text(&q,8))</td></tr>
    @ <tr><th>verified:</th><td>%s(db_column_int(&q,9)?"yes":"no")</td></th>
    @ <tr><th>lastContact:</th><td>%h(db_column_text(&q,10))</td></tr>
  }
  @ </table>
  db_finalize(&q);
  style_finish_page();
}
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/*
** This implementation of SHA1 is adapted from the example implementation
** contained in RFC-3174.
*/
#include <stdint.h>
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
#include <sys/types.h>
#include "config.h"
#include "sha1.h"

/*
** known as the "2-Clause License" or "FreeBSD License".)
**
 * If you do not have the ISO standard stdint.h header file, then you
 * must typdef the following:
 *    name              meaning
 *  uint32_t         unsigned 32 bit integer
 *  uint8_t          unsigned 8 bit integer (i.e., unsigned char)
 *
 */
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
#define SHA1HashSize 20
#define shaSuccess 0
#define shaInputTooLong 1
#define shaStateError 2

/*
*******************************************************************************
**
 *  This structure will hold context information for the SHA-1
 *  hashing operation
 */
** This implementation of SHA1.
*/
#include "config.h"
#include <sys/types.h>
#include "sha1.h"
typedef struct SHA1Context SHA1Context;
struct SHA1Context {
    uint32_t Intermediate_Hash[SHA1HashSize/4]; /* Message Digest  */

    uint32_t Length_Low;            /* Message length in bits      */
    uint32_t Length_High;           /* Message length in bits      */

    int Message_Block_Index;   /* Index into message block array   */
    uint8_t Message_Block[64];      /* 512-bit message blocks      */

    int Computed;               /* Is the digest computed?         */
    int Corrupted;             /* Is the message digest corrupted? */
};

/*
** SHA1 Implementation #1 is the hardened SHA1 implementation by
** Marc Stevens.  Code obtained from GitHub
 *  sha1.c
 *
 *  Description:
**
**     https://github.com/cr-marcstevens/sha1collisiondetection
**
** Downloaded on 2017-03-01 then repackaged to work with Fossil
** and makeheaders.
 *      This file implements the Secure Hashing Algorithm 1 as
 *      defined in FIPS PUB 180-1 published April 17, 1995.
 *
*/
 *      The SHA-1, produces a 160-bit message digest for a given
 *      data stream.  It should take about 2**n steps to find a
 *      message with the same digest as a given message and
 *      2**(n/2) to find any two messages with the same digest,
 *      when n is the digest size in bits.  Therefore, this
#if FOSSIL_HARDENED_SHA1
 *      algorithm can serve as a means of providing a
 *      "fingerprint" for a message.
 *
 *  Portability Issues:
 *      SHA-1 is defined in terms of 32-bit "words".  This code
 *      uses <stdint.h> (included via "sha1.h" to define 32 and 8
 *      bit unsigned integer types.  If your C compiler does not
 *      support 32 bit unsigned integers, this code is not
 *      appropriate.

#if INTERFACE
typedef void(*collision_block_callback)(uint64_t, const uint32_t*,
                            const uint32_t*, const uint32_t*, const uint32_t*);
struct SHA1_CTX {
  uint64_t total;
  uint32_t ihv[5];
  unsigned char buffer[64];
  int bigendian;
 *
 *  Caveats:
 *      SHA-1 is designed to work with messages less than 2^64 bits
 *      long.  Although SHA-1 allows a message digest to be generated
  int found_collision;
  int safe_hash;
  int detect_coll;
  int ubc_check;
 *      for messages of any number of bits less than 2^64, this
 *      implementation only works with messages with a length that is
 *      a multiple of the size of an 8-bit character.
 *
 */

  int reduced_round_coll;
/*
 *  Define the SHA1 circular left shift macro
 */
#define SHA1CircularShift(bits,word) \
                (((word) << (bits)) | ((word) >> (32-(bits))))

  collision_block_callback callback;
/* Local Function Prototyptes */
static void SHA1PadMessage(SHA1Context *);
static void SHA1ProcessMessageBlock(SHA1Context *);

/*
 *  SHA1Reset
  uint32_t ihv1[5];
  uint32_t ihv2[5];
  uint32_t m1[80];
  uint32_t m2[80];
  uint32_t states[80][5];
 *
 *  Description:
 *      This function will initialize the SHA1Context in preparation
 *      for computing a new SHA1 message digest.
 *
};
#endif
void SHA1DCInit(SHA1_CTX*);
void SHA1DCUpdate(SHA1_CTX*, const unsigned char*, unsigned);
int SHA1DCFinal(unsigned char[20], SHA1_CTX*);

 *  Parameters:
 *      context: [in/out]
 *          The context to reset.
#define SHA1Context SHA1_CTX
#define SHA1Init SHA1DCInit
 *
 *  Returns:
 *      sha Error Code.
 *
 */
static int SHA1Reset(SHA1Context *context)
#define SHA1Update SHA1DCUpdate
{
    context->Length_Low             = 0;
    context->Length_High            = 0;
    context->Message_Block_Index    = 0;

#define SHA1Final SHA1DCFinal
    context->Intermediate_Hash[0]   = 0x67452301;
    context->Intermediate_Hash[1]   = 0xEFCDAB89;
    context->Intermediate_Hash[2]   = 0x98BADCFE;
    context->Intermediate_Hash[3]   = 0x10325476;
    context->Intermediate_Hash[4]   = 0xC3D2E1F0;

    context->Computed   = 0;
    context->Corrupted  = 0;

    return shaSuccess;
}

/*
 *  SHA1Result
 *
** SHA1 Implementation #2: use the SHA1 algorithm built into SSL
*/
 *  Description:
 *      This function will return the 160-bit message digest into the
 *      Message_Digest array  provided by the caller.
 *      NOTE: The first octet of hash is stored in the 0th element,
 *            the last octet of hash in the 19th element.
 *
#elif  defined(FOSSIL_ENABLE_SSL)

 *  Parameters:
 *      context: [in/out]
 *          The context to use to calculate the SHA-1 hash.
# include <openssl/sha.h>
# define SHA1Context SHA_CTX
# define SHA1Init SHA1_Init
# define SHA1Update SHA1_Update
# define SHA1Final SHA1_Final

 *      Message_Digest: [out]
 *          Where the digest is returned.
 *
 *  Returns:
/*
** SHA1 Implementation #3:  If none of the previous two SHA1
** algorithms work, there is this built-in.  This built-in was the
** original implementation used by Fossil.
*/
#else
/*
** The SHA1 implementation below is adapted from:
**
 *      sha Error Code.
 *
 */
static int SHA1Result( SHA1Context *context,
                uint8_t Message_Digest[SHA1HashSize])
**  $NetBSD: sha1.c,v 1.6 2009/11/06 20:31:18 joerg Exp $
**  $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $
**
** SHA-1 in C
** By Steve Reid <steve@edmweb.com>
** 100% Public Domain
*/
typedef struct SHA1Context SHA1Context;
struct SHA1Context {
{
    int i;

  unsigned int state[5];
  unsigned int count[2];
    if (context->Corrupted)
    {
        return context->Corrupted;
    }

  unsigned char buffer[64];
    if (!context->Computed)
    {
        SHA1PadMessage(context);
        for(i=0; i<64; ++i)
        {
            /* message may be sensitive, clear it out */
            context->Message_Block[i] = 0;
        }
};
        context->Length_Low = 0;    /* and clear length */
        context->Length_High = 0;
        context->Computed = 1;

    }

    for(i = 0; i < SHA1HashSize; ++i)
    {
        Message_Digest[i] = context->Intermediate_Hash[i>>2]
                            >> 8 * ( 3 - ( i & 0x03 ) );
    }

    return shaSuccess;
}

/*
 *  SHA1Input
 * blk0() and blk() perform the initial expand.
 * I got the idea of expanding during the round function from SSLeay
 *
 *  Description:
 *      This function accepts an array of octets as the next portion
 *      of the message.
 *
 * blk0le() for little-endian and blk0be() for big-endian.
 */
 *  Parameters:
 *      context: [in/out]
 *          The SHA context to update
#define SHA_ROT(x,l,r) ((x) << (l) | (x) >> (r))
 *      message_array: [in]
 *          An array of characters representing the next portion of
 *          the message.
 *      length: [in]
#define rol(x,k) SHA_ROT(x,k,32-(k))
#define ror(x,k) SHA_ROT(x,32-(k),k)
#define blk0le(i) (block[i] = (ror(block[i],8)&0xFF00FF00) \
    |(rol(block[i],8)&0x00FF00FF))
#define blk0be(i) block[i]
#define blk(i) (block[i&15] = rol(block[(i+13)&15]^block[(i+8)&15] \
    ^block[(i+2)&15]^block[i&15],1))
 *          The length of the message in message_array
 *
 *  Returns:

/*
 * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
 *      sha Error Code.
 *
 * Rl0() for little-endian and Rb0() for big-endian.  Endianness is
 * determined at run-time.
 */
static
int SHA1Input(    SHA1Context    *context,
                  const uint8_t  *message_array,
                  unsigned       length)
#define Rl0(v,w,x,y,z,i) \
    z+=((w&(x^y))^y)+blk0le(i)+0x5A827999+rol(v,5);w=ror(w,2);
#define Rb0(v,w,x,y,z,i) \
{
    if (!length)
    z+=((w&(x^y))^y)+blk0be(i)+0x5A827999+rol(v,5);w=ror(w,2);
#define R1(v,w,x,y,z,i) \
    {
        return shaSuccess;
    z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=ror(w,2);
#define R2(v,w,x,y,z,i) \
    }

    if (context->Computed)
    z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=ror(w,2);
#define R3(v,w,x,y,z,i) \
    z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=ror(w,2);
    {
        context->Corrupted = shaStateError;

#define R4(v,w,x,y,z,i) \
        return shaStateError;
    }

    z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=ror(w,2);
    if (context->Corrupted)
    {
         return context->Corrupted;
    }

    while(length-- && !context->Corrupted)
    {
    context->Message_Block[context->Message_Block_Index++] =
                    (*message_array & 0xFF);

/*
    context->Length_Low += 8;
    if (context->Length_Low == 0)
    {
        context->Length_High++;
        if (context->Length_High == 0)
        {
            /* Message is too long */
 * Hash a single 512-bit block. This is the core of the algorithm.
 */
#define a qq[0]
            context->Corrupted = 1;
        }
    }

#define b qq[1]
    if (context->Message_Block_Index == 64)
    {
        SHA1ProcessMessageBlock(context);
    }

#define c qq[2]
    message_array++;
    }

#define d qq[3]
#define e qq[4]
    return shaSuccess;
}

/*
 *  SHA1ProcessMessageBlock

void SHA1Transform(unsigned int state[5], const unsigned char buffer[64])
{
  unsigned int qq[5]; /* a, b, c, d, e; */
  static int one = 1;
  unsigned int block[16];
 *
 *  Description:
  memcpy(block, buffer, 64);
 *      This function will process the next 512 bits of the message
 *      stored in the Message_Block array.
 *
 *  Parameters:
  memcpy(qq,state,5*sizeof(unsigned int));

  /* Copy context->state[] to working vars */
  /*
  a = state[0];
 *      None.
 *
 *  Returns:
 *      Nothing.
  b = state[1];
  c = state[2];
  d = state[3];
 *
 *  Comments:
 *      Many of the variable names in this code, especially the
 *      single character names, were used because those were the
 *      names used in the publication.
 *
 *
 */
  e = state[4];
  */
static void SHA1ProcessMessageBlock(SHA1Context *context)
{
    const uint32_t K[] =    {       /* Constants defined in SHA-1   */
                            0x5A827999,
                            0x6ED9EBA1,
                            0x8F1BBCDC,
                            0xCA62C1D6
                            };
    int           t;                 /* Loop counter                */
    uint32_t      temp;              /* Temporary word value        */
    uint32_t      W[80];             /* Word sequence               */
    uint32_t      A, B, C, D, E;     /* Word buffers                */

    /*
     *  Initialize the first 16 words in the array W
     */
    for(t = 0; t < 16; t++)
    {
        W[t] = context->Message_Block[t * 4] << 24;
        W[t] |= context->Message_Block[t * 4 + 1] << 16;
        W[t] |= context->Message_Block[t * 4 + 2] << 8;
        W[t] |= context->Message_Block[t * 4 + 3];
    }

  /* 4 rounds of 20 operations each. Loop unrolled. */
  if( 1 == *(unsigned char*)&one ){
    Rl0(a,b,c,d,e, 0); Rl0(e,a,b,c,d, 1); Rl0(d,e,a,b,c, 2); Rl0(c,d,e,a,b, 3);
    Rl0(b,c,d,e,a, 4); Rl0(a,b,c,d,e, 5); Rl0(e,a,b,c,d, 6); Rl0(d,e,a,b,c, 7);
    Rl0(c,d,e,a,b, 8); Rl0(b,c,d,e,a, 9); Rl0(a,b,c,d,e,10); Rl0(e,a,b,c,d,11);
    Rl0(d,e,a,b,c,12); Rl0(c,d,e,a,b,13); Rl0(b,c,d,e,a,14); Rl0(a,b,c,d,e,15);
  }else{
    Rb0(a,b,c,d,e, 0); Rb0(e,a,b,c,d, 1); Rb0(d,e,a,b,c, 2); Rb0(c,d,e,a,b, 3);
    for(t = 16; t < 80; t++)
    {
       W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
    }

    Rb0(b,c,d,e,a, 4); Rb0(a,b,c,d,e, 5); Rb0(e,a,b,c,d, 6); Rb0(d,e,a,b,c, 7);
    Rb0(c,d,e,a,b, 8); Rb0(b,c,d,e,a, 9); Rb0(a,b,c,d,e,10); Rb0(e,a,b,c,d,11);
    Rb0(d,e,a,b,c,12); Rb0(c,d,e,a,b,13); Rb0(b,c,d,e,a,14); Rb0(a,b,c,d,e,15);
  }
  R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
  R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
  R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
  R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
  R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
  R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
  R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
  R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
  R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
  R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
  R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
  R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
  R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
  R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
  R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
  R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
    A = context->Intermediate_Hash[0];
    B = context->Intermediate_Hash[1];
    C = context->Intermediate_Hash[2];
    D = context->Intermediate_Hash[3];
    E = context->Intermediate_Hash[4];

    for(t = 0; t < 20; t++)
    {
        temp =  SHA1CircularShift(5,A) +
                ((B & C) | ((~B) & D)) + E + W[t] + K[0];
        E = D;
        D = C;
  /* Add the working vars back into context.state[] */
  state[0] += a;
  state[1] += b;
        C = SHA1CircularShift(30,B);

        B = A;
        A = temp;
    }
  state[2] += c;
  state[3] += d;
  state[4] += e;
}

    for(t = 20; t < 40; t++)
    {
        temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1];
        E = D;
        D = C;
        C = SHA1CircularShift(30,B);
        B = A;
        A = temp;
    }


/*
    for(t = 40; t < 60; t++)
    {
        temp = SHA1CircularShift(5,A) +
               ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2];
        E = D;
        D = C;
        C = SHA1CircularShift(30,B);
 * SHA1Init - Initialize new context
        B = A;
        A = temp;
    }

 */
    for(t = 60; t < 80; t++)
    {
        temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3];
static void SHA1Init(SHA1Context *context){
        E = D;
        D = C;
        C = SHA1CircularShift(30,B);
    /* SHA1 initialization constants */
        B = A;
        A = temp;
    }

    context->Intermediate_Hash[0] += A;
    context->Intermediate_Hash[1] += B;
    context->Intermediate_Hash[2] += C;
    context->Intermediate_Hash[3] += D;
    context->Intermediate_Hash[4] += E;

    context->state[0] = 0x67452301;
    context->state[1] = 0xEFCDAB89;
    context->state[2] = 0x98BADCFE;
    context->state[3] = 0x10325476;
    context->state[4] = 0xC3D2E1F0;
    context->count[0] = context->count[1] = 0;
}
    context->Message_Block_Index = 0;
}


/*
 *  SHA1PadMessage
 *

 * Run your data through this.
 *  Description:
 *      According to the standard, the message must be padded to an even
 *      512 bits.  The first padding bit must be a '1'.  The last 64
 *      bits represent the length of the original message.  All bits in
 *      between should be 0.  This function will pad the message
 *      according to those rules by filling the Message_Block array
 *      accordingly.  It will also call the ProcessMessageBlock function
 *      provided appropriately.  When it returns, it can be assumed that
 *      the message digest has been computed.
 *
 *  Parameters:
 *      context: [in/out]
 *          The context to pad
 */
static void SHA1Update(
  SHA1Context *context,
  const unsigned char *data,
 *      ProcessMessageBlock: [in]
 *          The appropriate SHA*ProcessMessageBlock function
  unsigned int len
){
    unsigned int i, j;
 *  Returns:
 *      Nothing.
 *

 */
static void SHA1PadMessage(SHA1Context *context)
    j = context->count[0];
{
    /*
     *  Check to see if the current message block is too small to hold
     *  the initial padding bits and length.  If so, we will pad the
     *  block, process it, and then continue padding into a second
     *  block.
     */
    if (context->Message_Block_Index > 55)
    if ((context->count[0] += len << 3) < j)
    {
        context->Message_Block[context->Message_Block_Index++] = 0x80;
        while(context->Message_Block_Index < 64)
        context->count[1] += (len>>29)+1;
    j = (j >> 3) & 63;
    if ((j + len) > 63) {
        (void)memcpy(&context->buffer[j], data, (i = 64-j));
        SHA1Transform(context->state, context->buffer);
        {
            context->Message_Block[context->Message_Block_Index++] = 0;
        }

        SHA1ProcessMessageBlock(context);

        for ( ; i + 63 < len; i += 64)
            SHA1Transform(context->state, &data[i]);
        j = 0;
    } else {
        i = 0;
    }
    (void)memcpy(&context->buffer[j], &data[i], len - i);
}
        while(context->Message_Block_Index < 56)
        {

            context->Message_Block[context->Message_Block_Index++] = 0;
        }
    }
    else
    {

/*
 * Add padding and return the message digest.
 */
static void SHA1Final(unsigned char *digest, SHA1Context *context){
    unsigned int i;
    unsigned char finalcount[8];

        context->Message_Block[context->Message_Block_Index++] = 0x80;
        while(context->Message_Block_Index < 56)
    for (i = 0; i < 8; i++) {
        finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
        {

         >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
            context->Message_Block[context->Message_Block_Index++] = 0;
        }
    }

    }
    SHA1Update(context, (const unsigned char *)"\200", 1);
    while ((context->count[0] & 504) != 448)
        SHA1Update(context, (const unsigned char *)"\0", 1);
    SHA1Update(context, finalcount, 8);  /* Should cause a SHA1Transform() */

    if (digest) {
    /*
     *  Store the message length as the last 8 octets
     */
    context->Message_Block[56] = context->Length_High >> 24;
    context->Message_Block[57] = context->Length_High >> 16;
    context->Message_Block[58] = context->Length_High >> 8;
    context->Message_Block[59] = context->Length_High;
    context->Message_Block[60] = context->Length_Low >> 24;
    context->Message_Block[61] = context->Length_Low >> 16;
    context->Message_Block[62] = context->Length_Low >> 8;
        for (i = 0; i < 20; i++)
            digest[i] = (unsigned char)
                ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
    context->Message_Block[63] = context->Length_Low;

    }
    SHA1ProcessMessageBlock(context);
}

#endif /* Built-in SHA1 implemenation */

/*
** Convert a digest into base-16.  digest should be declared as
** "unsigned char digest[20]" in the calling function.  The SHA1
** digest is stored in the first 20 bytes.  zBuf should
** be "char zBuf[41]".
*/
static void DigestToBase16(unsigned char *digest, char *zBuf){
  static char const zEncode[] = "0123456789abcdef";
  int i, j;
  static const char zEncode[] = "0123456789abcdef";
  int ix;

  for(j=i=0; i<20; i++){
  for(ix=0; ix<20; ix++){
    int a = digest[i];
    zBuf[j++] = zEncode[(a>>4)&0xf];
    zBuf[j++] = zEncode[a & 0xf];
    *zBuf++ = zEncode[(*digest>>4)&0xf];
    *zBuf++ = zEncode[*digest++ & 0xf];
  }
  zBuf[j] = 0;
  *zBuf = '\0';
}

/*
** The state of a incremental SHA1 checksum computation.  Only one
** The state of an incremental SHA1 checksum computation.  Only one
** such computation can be underway at a time, of course.
*/
static SHA1Context incrCtx;
static int incrInit = 0;

/*
** Add more text to the incremental SHA1 checksum.
*/
void sha1sum_step_text(const char *zText, int nBytes){
  if( !incrInit ){
    SHA1Reset(&incrCtx);
    SHA1Init(&incrCtx);
    incrInit = 1;
  }
  if( nBytes<=0 ){
    if( nBytes==0 ) return;
    nBytes = strlen(zText);
  }
  SHA1Input(&incrCtx, (unsigned char*)zText, nBytes);
  SHA1Update(&incrCtx, (unsigned char*)zText, nBytes);
}

/*
** Add the content of a blob to the incremental SHA1 checksum.
*/
void sha1sum_step_blob(Blob *p){
  sha1sum_step_text(blob_buffer(p), blob_size(p));
}

/*
** Finish the incremental SHA1 checksum.  Store the result in blob pOut
** if pOut!=0.  Also return a pointer to the result.  
** if pOut!=0.  Also return a pointer to the result.
**
** This resets the incremental checksum preparing for the next round
** of computation.  The return pointer points to a static buffer that
** is overwritten by subsequent calls to this function.
*/
char *sha1sum_finish(Blob *pOut){
  unsigned char zResult[20];
  static char zOut[41];
  sha1sum_step_text(0,0);
  SHA1Result(&incrCtx, zResult);
  SHA1Final(zResult, &incrCtx);
  incrInit = 0;
  DigestToBase16(zResult, zOut);
  if( pOut ){
    blob_zero(pOut);
    blob_append(pOut, zOut, 40);
  }
  return zOut;
}


/*
** Compute the SHA1 checksum of a file on disk.  Store the resulting
** checksum in the blob pCksum.  pCksum is assumed to be ininitialized.
** checksum in the blob pCksum.  pCksum is assumed to be initialized.
**
** Return the number of errors.
*/
int sha1sum_file(const char *zFilename, Blob *pCksum){
int sha1sum_file(const char *zFilename, int eFType, Blob *pCksum){
  FILE *in;
  SHA1Context ctx;
  unsigned char zResult[20];
  char zBuf[10240];

  if( eFType==RepoFILE && file_islink(zFilename) ){
    /* Instead of file content, return sha1 of link destination path */
    Blob destinationPath;
    int rc;

    blob_read_link(&destinationPath, zFilename);
    rc = sha1sum_blob(&destinationPath, pCksum);
    blob_reset(&destinationPath);
    return rc;
  }

  in = fopen(zFilename,"rb");
  in = fossil_fopen(zFilename,"rb");
  if( in==0 ){
    return 1;
  }
  SHA1Reset(&ctx);
  SHA1Init(&ctx);
  for(;;){
    int n;
    n = fread(zBuf, 1, sizeof(zBuf), in);
    if( n<=0 ) break;
    SHA1Input(&ctx, (unsigned char*)zBuf, (unsigned)n);
    SHA1Update(&ctx, (unsigned char*)zBuf, (unsigned)n);
  }
  fclose(in);
  blob_zero(pCksum);
  blob_resize(pCksum, 40);
  SHA1Result(&ctx, zResult);
  SHA1Final(zResult, &ctx);
  DigestToBase16(zResult, blob_buffer(pCksum));
  return 0;
}

/*
** Compute the SHA1 checksum of a blob in memory.  Store the resulting
** checksum in the blob pCksum.  pCksum is assumed to be either
** uninitialized or the same blob as pIn.
**
** Return the number of errors.
*/
int sha1sum_blob(const Blob *pIn, Blob *pCksum){
  SHA1Context ctx;
  unsigned char zResult[20];

  SHA1Reset(&ctx);
  SHA1Input(&ctx, (unsigned char*)blob_buffer(pIn), blob_size(pIn));
  SHA1Init(&ctx);
  SHA1Update(&ctx, (unsigned char*)blob_buffer(pIn), blob_size(pIn));
  if( pIn==pCksum ){
    blob_reset(pCksum);
  }else{
    blob_zero(pCksum);
  }
  blob_resize(pCksum, 40);
  SHA1Result(&ctx, zResult);
  SHA1Final(zResult, &ctx);
  DigestToBase16(zResult, blob_buffer(pCksum));
  return 0;
}

/*
** Compute a binary SHA1 checksum of a zero-terminated string.  The
** result is stored in zOut, which is a buffer that must be at least
** 20 bytes in size.
*/
void sha1sum_binary(const char *zIn, unsigned char *zOut){
  SHA1Context ctx;

  SHA1Init(&ctx);
  SHA1Update(&ctx, (unsigned const char*)zIn, strlen(zIn));
  SHA1Final(zOut, &ctx);
}

/*
** Compute the SHA1 checksum of a zero-terminated string.  The
** result is held in memory obtained from mprintf().
*/
char *sha1sum(const char *zIn){
  SHA1Context ctx;
  unsigned char zResult[20];
  char zDigest[41];

  SHA1Reset(&ctx);
  SHA1Input(&ctx, (unsigned const char*)zIn, strlen(zIn));
  SHA1Result(&ctx, zResult);
  SHA1Init(&ctx);
  SHA1Update(&ctx, (unsigned const char*)zIn, strlen(zIn));
  SHA1Final(zResult, &ctx);
  DigestToBase16(zResult, zDigest);
  return mprintf("%s", zDigest);
}

/*
** Convert a cleartext password for a specific user into a SHA1 hash.
** 
**
** The algorithm here is:
**
**       SHA1( project-code + "/" + login + "/" + password )
**
** In words: The users login name and password are appended to the
** project ID code and the SHA1 hash of the result is computed.
**
** The result of this function is the shared secret used by a client
** to authenticate to a server for the sync protocol.  It is also the
** value stored in the USER.PW field of the database.  By mixing in the
** login name and the project id with the hash, different shared secrets
** are obtained even if two users select the same password, or if a 
** are obtained even if two users select the same password, or if a
** single user selects the same password for multiple projects.
*/
char *sha1_shared_secret(const char *zPw, const char *zLogin){
char *sha1_shared_secret(
  const char *zPw,        /* The password to encrypt */
  const char *zLogin,     /* Username */
  const char *zProjCode   /* Project-code.  Use built-in project code if NULL */
){
  static char *zProjectId = 0;
  SHA1Context ctx;
  unsigned char zResult[20];
  char zDigest[41];

  SHA1Reset(&ctx);
  if( zProjectId==0 ){
    zProjectId = db_get("project-code", 0);
  SHA1Init(&ctx);
  if( zProjCode==0 ){
    if( zProjectId==0 ){
      zProjectId = db_get("project-code", 0);

    /* On the first xfer request of a clone, the project-code is not yet
    ** known.  Use the cleartext password, since that is all we have.
    */
    if( zProjectId==0 ){
      return mprintf("%s", zPw);
    }
  }
  SHA1Input(&ctx, (unsigned char*)zProjectId, strlen(zProjectId));
  SHA1Input(&ctx, (unsigned char*)"/", 1);
  SHA1Input(&ctx, (unsigned char*)zLogin, strlen(zLogin));
  SHA1Input(&ctx, (unsigned char*)"/", 1);
  SHA1Input(&ctx, (unsigned const char*)zPw, strlen(zPw));
  SHA1Result(&ctx, zResult);
      /* On the first xfer request of a clone, the project-code is not yet
      ** known.  Use the cleartext password, since that is all we have.
      */
      if( zProjectId==0 ){
        return mprintf("%s", zPw);
      }
    }
    zProjCode = zProjectId;
  }
  SHA1Update(&ctx, (unsigned char*)zProjCode, strlen(zProjCode));
  SHA1Update(&ctx, (unsigned char*)"/", 1);
  SHA1Update(&ctx, (unsigned char*)zLogin, strlen(zLogin));
  SHA1Update(&ctx, (unsigned char*)"/", 1);
  SHA1Update(&ctx, (unsigned const char*)zPw, strlen(zPw));
  SHA1Final(zResult, &ctx);
  DigestToBase16(zResult, zDigest);
  return mprintf("%s", zDigest);
}

/*
** Implement the shared_secret() SQL function.  shared_secret() takes two or
** three arguments; the third argument is optional.
**
** (1) The cleartext password
** (2) The login name
** (3) The project code
**
** Returns sha1($password/$login/$projcode).
*/
void sha1_shared_secret_sql_function(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zPw;
  const char *zLogin;
  const char *zProjid;

  assert( argc==2 || argc==3 );
  zPw = (const char*)sqlite3_value_text(argv[0]);
  if( zPw==0 || zPw[0]==0 ) return;
  zLogin = (const char*)sqlite3_value_text(argv[1]);
  if( zLogin==0 ) return;
  if( argc==3 ){
    zProjid = (const char*)sqlite3_value_text(argv[2]);
    if( zProjid && zProjid[0]==0 ) zProjid = 0;
  }else{
    zProjid = 0;
  }
  sqlite3_result_text(context, sha1_shared_secret(zPw, zLogin, zProjid), -1,
                      fossil_free);
}

/*
** COMMAND: sha1sum
** %fossil sha1sum FILE...
** COMMAND: sha1sum*
**
** Usage: %fossil sha1sum FILE...
**
** Compute an SHA1 checksum of all files named on the command-line.
** If an file is named "-" then take its content from standard input.
** If a file is named "-" then take its content from standard input.
**
** Options:
**    -h|--dereference     If FILE is a symbolic link, compute the hash
**                         on the object that the link points to.  Normally,
**                         the hash is over the name of the object that
**                         the link points to.
**
** See also: [[md5sum]], [[sha3sum]]
*/
void sha1sum_test(void){
  int i;
  Blob in;
  Blob cksum;
  int eFType = SymFILE;
  if( find_option("dereference","h",0)!=0 ){
    eFType = ExtFILE;
  
  }

  for(i=2; i<g.argc; i++){
    blob_init(&cksum, "************** not found ***************", -1);
    if( g.argv[i][0]=='-' && g.argv[i][1]==0 ){
      blob_read_from_channel(&in, stdin, -1);
      sha1sum_blob(&in, &cksum);
    }else{
      sha1sum_file(g.argv[i], &cksum);
      sha1sum_file(g.argv[i], eFType, &cksum);
    }
    printf("%s  %s\n", blob_str(&cksum), g.argv[i]);
    fossil_print("%s  %s\n", blob_str(&cksum), g.argv[i]);
    blob_reset(&cksum);
  }
}
Added src/sha1hard.c.




























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** The code in this file is the concatenation of several files
** copied out of
**
**     https://github.com/cr-marcstevens/sha1collisiondetection
**
** The copy was made on 2017-03-01.  Some minor formatting changes
** were made but otherwise the code is unchanged.  All
** original copyright claims are preserved.
**
** The code here implements a version of the SHA1 hash function that
** is not vulnerable to crypto-analysis based attacks.  If an input
** is detected that looks like it might have been the result of a
** crypto-analysis attack, then the hash is perturbed to generate a
** completely different hash.  The authors claim that the chance of
** a false-positive is vanishingly small.
*/
/*MAKEHEADERS-STOP*/
#include "config.h"
#if FOSSIL_HARDENED_SHA1  /* Only do this code if requested */
/*************** File:  lib/sha1.c ****************/
/***
* Copyright 2017 Marc Stevens <marc@marc-stevens.nl>, Dan Shumow (danshu@microsoft.com)
* Distributed under the MIT Software License.
* See accompanying file LICENSE.txt or copy at
* https://opensource.org/licenses/MIT
***/
/*************** File:  LICENSE.txt ***************/
/*
** MIT License
**
** Copyright (c) 2017:
**     Marc Stevens
**     Cryptology Group
**     Centrum Wiskunde & Informatica
**     P.O. Box 94079, 1090 GB Amsterdam, Netherlands
**     marc@marc-stevens.nl
**
**     Dan Shumow
**     Microsoft Research
**     danshu@microsoft.com
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in all
** copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
** SOFTWARE.
*/

#include <string.h>
#include <memory.h>
#include <stdio.h>

#define DVMASKSIZE 1
typedef struct { int dvType; int dvK; int dvB; int testt; int maski; int maskb; uint32_t dm[80]; } dv_info_t;
#define DOSTORESTATE58
#define DOSTORESTATE65
typedef void(*sha1_recompression_type)(uint32_t*, uint32_t*, const uint32_t*, const uint32_t*);
void sha1_message_expansion(uint32_t W[80]);
void sha1_compression(uint32_t ihv[5], const uint32_t m[16]);
void sha1_compression_W(uint32_t ihv[5], const uint32_t W[80]);
void sha1_compression_states(uint32_t ihv[5], const uint32_t W[80], uint32_t states[80][5]);
extern sha1_recompression_type sha1_recompression_step[80];
typedef void(*collision_block_callback)(uint64_t, const uint32_t*, const uint32_t*, const uint32_t*, const uint32_t*);
typedef struct {
  uint64_t total;
  uint32_t ihv[5];
  unsigned char buffer[64];
  int bigendian;
  int found_collision;
  int safe_hash;
  int detect_coll;
  int ubc_check;
  int reduced_round_coll;
  collision_block_callback callback;

  uint32_t ihv1[5];
  uint32_t ihv2[5];
  uint32_t m1[80];
  uint32_t m2[80];
  uint32_t states[80][5];
} SHA1_CTX;

/******************** File: lib/ubc_check.c **************************/
/***
* Copyright 2017 Marc Stevens <marc@marc-stevens.nl>, Dan Shumow <danshu@microsoft.com>
* Distributed under the MIT Software License.
* See accompanying file LICENSE.txt or copy at
* https://opensource.org/licenses/MIT
***/

/*
** this file was generated by the 'parse_bitrel' program in the tools section
** using the data files from directory 'tools/data/3565'
**
** sha1_dvs contains a list of SHA-1 Disturbance Vectors (DV) to check
** dvType, dvK and dvB define the DV: I(K,B) or II(K,B) (see the paper)
** dm[80] is the expanded message block XOR-difference defined by the DV
** testt is the step to do the recompression from for collision detection
** maski and maskb define the bit to check for each DV in the dvmask returned by ubc_check
**
** ubc_check takes as input an expanded message block and verifies the unavoidable bitconditions for all listed DVs
** it returns a dvmask where each bit belonging to a DV is set if all unavoidable bitconditions for that DV have been met
** thus one needs to do the recompression check for each DV that has its bit set
**
** ubc_check is programmatically generated and the unavoidable bitconditions have been hardcoded
** a directly verifiable version named ubc_check_verify can be found in ubc_check_verify.c
** ubc_check has been verified against ubc_check_verify using the 'ubc_check_test' program in the tools section
*/

static const uint32_t DV_I_43_0_bit   = (uint32_t)(1) << 0;
static const uint32_t DV_I_44_0_bit   = (uint32_t)(1) << 1;
static const uint32_t DV_I_45_0_bit   = (uint32_t)(1) << 2;
static const uint32_t DV_I_46_0_bit   = (uint32_t)(1) << 3;
static const uint32_t DV_I_46_2_bit   = (uint32_t)(1) << 4;
static const uint32_t DV_I_47_0_bit   = (uint32_t)(1) << 5;
static const uint32_t DV_I_47_2_bit   = (uint32_t)(1) << 6;
static const uint32_t DV_I_48_0_bit   = (uint32_t)(1) << 7;
static const uint32_t DV_I_48_2_bit   = (uint32_t)(1) << 8;
static const uint32_t DV_I_49_0_bit   = (uint32_t)(1) << 9;
static const uint32_t DV_I_49_2_bit   = (uint32_t)(1) << 10;
static const uint32_t DV_I_50_0_bit   = (uint32_t)(1) << 11;
static const uint32_t DV_I_50_2_bit   = (uint32_t)(1) << 12;
static const uint32_t DV_I_51_0_bit   = (uint32_t)(1) << 13;
static const uint32_t DV_I_51_2_bit   = (uint32_t)(1) << 14;
static const uint32_t DV_I_52_0_bit   = (uint32_t)(1) << 15;
static const uint32_t DV_II_45_0_bit   = (uint32_t)(1) << 16;
static const uint32_t DV_II_46_0_bit   = (uint32_t)(1) << 17;
static const uint32_t DV_II_46_2_bit   = (uint32_t)(1) << 18;
static const uint32_t DV_II_47_0_bit   = (uint32_t)(1) << 19;
static const uint32_t DV_II_48_0_bit   = (uint32_t)(1) << 20;
static const uint32_t DV_II_49_0_bit   = (uint32_t)(1) << 21;
static const uint32_t DV_II_49_2_bit   = (uint32_t)(1) << 22;
static const uint32_t DV_II_50_0_bit   = (uint32_t)(1) << 23;
static const uint32_t DV_II_50_2_bit   = (uint32_t)(1) << 24;
static const uint32_t DV_II_51_0_bit   = (uint32_t)(1) << 25;
static const uint32_t DV_II_51_2_bit   = (uint32_t)(1) << 26;
static const uint32_t DV_II_52_0_bit   = (uint32_t)(1) << 27;
static const uint32_t DV_II_53_0_bit   = (uint32_t)(1) << 28;
static const uint32_t DV_II_54_0_bit   = (uint32_t)(1) << 29;
static const uint32_t DV_II_55_0_bit   = (uint32_t)(1) << 30;
static const uint32_t DV_II_56_0_bit   = (uint32_t)(1) << 31;

dv_info_t sha1_dvs[] =
{
  {1,43,0,58,0,0, { 0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164,0x00000408,0x800000e6,0x8000004c,0x00000803,0x80000161,0x80000599 } }
, {1,44,0,58,0,1, { 0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164,0x00000408,0x800000e6,0x8000004c,0x00000803,0x80000161 } }
, {1,45,0,58,0,2, { 0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164,0x00000408,0x800000e6,0x8000004c,0x00000803 } }
, {1,46,0,58,0,3, { 0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164,0x00000408,0x800000e6,0x8000004c } }
, {1,46,2,58,0,4, { 0xb0000040,0xd0000053,0xd0000022,0x20000000,0x60000032,0x60000043,0x20000040,0xe0000042,0x60000002,0x80000001,0x00000020,0x00000003,0x40000052,0x40000040,0xe0000052,0xa0000000,0x80000040,0x20000001,0x20000060,0x80000001,0x40000042,0xc0000043,0x40000022,0x00000003,0x40000042,0xc0000043,0xc0000022,0x00000001,0x40000002,0xc0000043,0x40000062,0x80000001,0x40000042,0x40000042,0x40000002,0x00000002,0x00000040,0x80000002,0x80000000,0x80000002,0x80000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000000,0x00000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000101,0x00000009,0x00000012,0x00000202,0x0000001a,0x00000124,0x0000040c,0x00000026,0x0000004a,0x0000080a,0x00000060,0x00000590,0x00001020,0x0000039a,0x00000132 } }
, {1,47,0,58,0,5, { 0xc8000010,0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164,0x00000408,0x800000e6 } }
, {1,47,2,58,0,6, { 0x20000043,0xb0000040,0xd0000053,0xd0000022,0x20000000,0x60000032,0x60000043,0x20000040,0xe0000042,0x60000002,0x80000001,0x00000020,0x00000003,0x40000052,0x40000040,0xe0000052,0xa0000000,0x80000040,0x20000001,0x20000060,0x80000001,0x40000042,0xc0000043,0x40000022,0x00000003,0x40000042,0xc0000043,0xc0000022,0x00000001,0x40000002,0xc0000043,0x40000062,0x80000001,0x40000042,0x40000042,0x40000002,0x00000002,0x00000040,0x80000002,0x80000000,0x80000002,0x80000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000000,0x00000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000101,0x00000009,0x00000012,0x00000202,0x0000001a,0x00000124,0x0000040c,0x00000026,0x0000004a,0x0000080a,0x00000060,0x00000590,0x00001020,0x0000039a } }
, {1,48,0,58,0,7, { 0xb800000a,0xc8000010,0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164,0x00000408 } }
, {1,48,2,58,0,8, { 0xe000002a,0x20000043,0xb0000040,0xd0000053,0xd0000022,0x20000000,0x60000032,0x60000043,0x20000040,0xe0000042,0x60000002,0x80000001,0x00000020,0x00000003,0x40000052,0x40000040,0xe0000052,0xa0000000,0x80000040,0x20000001,0x20000060,0x80000001,0x40000042,0xc0000043,0x40000022,0x00000003,0x40000042,0xc0000043,0xc0000022,0x00000001,0x40000002,0xc0000043,0x40000062,0x80000001,0x40000042,0x40000042,0x40000002,0x00000002,0x00000040,0x80000002,0x80000000,0x80000002,0x80000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000000,0x00000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000101,0x00000009,0x00000012,0x00000202,0x0000001a,0x00000124,0x0000040c,0x00000026,0x0000004a,0x0000080a,0x00000060,0x00000590,0x00001020 } }
, {1,49,0,58,0,9, { 0x18000000,0xb800000a,0xc8000010,0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018,0x00000164 } }
, {1,49,2,58,0,10, { 0x60000000,0xe000002a,0x20000043,0xb0000040,0xd0000053,0xd0000022,0x20000000,0x60000032,0x60000043,0x20000040,0xe0000042,0x60000002,0x80000001,0x00000020,0x00000003,0x40000052,0x40000040,0xe0000052,0xa0000000,0x80000040,0x20000001,0x20000060,0x80000001,0x40000042,0xc0000043,0x40000022,0x00000003,0x40000042,0xc0000043,0xc0000022,0x00000001,0x40000002,0xc0000043,0x40000062,0x80000001,0x40000042,0x40000042,0x40000002,0x00000002,0x00000040,0x80000002,0x80000000,0x80000002,0x80000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000000,0x00000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000101,0x00000009,0x00000012,0x00000202,0x0000001a,0x00000124,0x0000040c,0x00000026,0x0000004a,0x0000080a,0x00000060,0x00000590 } }
, {1,50,0,65,0,11, { 0x0800000c,0x18000000,0xb800000a,0xc8000010,0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202,0x00000018 } }
, {1,50,2,65,0,12, { 0x20000030,0x60000000,0xe000002a,0x20000043,0xb0000040,0xd0000053,0xd0000022,0x20000000,0x60000032,0x60000043,0x20000040,0xe0000042,0x60000002,0x80000001,0x00000020,0x00000003,0x40000052,0x40000040,0xe0000052,0xa0000000,0x80000040,0x20000001,0x20000060,0x80000001,0x40000042,0xc0000043,0x40000022,0x00000003,0x40000042,0xc0000043,0xc0000022,0x00000001,0x40000002,0xc0000043,0x40000062,0x80000001,0x40000042,0x40000042,0x40000002,0x00000002,0x00000040,0x80000002,0x80000000,0x80000002,0x80000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000000,0x00000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000101,0x00000009,0x00000012,0x00000202,0x0000001a,0x00000124,0x0000040c,0x00000026,0x0000004a,0x0000080a,0x00000060 } }
, {1,51,0,65,0,13, { 0xe8000000,0x0800000c,0x18000000,0xb800000a,0xc8000010,0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012,0x80000202 } }
, {1,51,2,65,0,14, { 0xa0000003,0x20000030,0x60000000,0xe000002a,0x20000043,0xb0000040,0xd0000053,0xd0000022,0x20000000,0x60000032,0x60000043,0x20000040,0xe0000042,0x60000002,0x80000001,0x00000020,0x00000003,0x40000052,0x40000040,0xe0000052,0xa0000000,0x80000040,0x20000001,0x20000060,0x80000001,0x40000042,0xc0000043,0x40000022,0x00000003,0x40000042,0xc0000043,0xc0000022,0x00000001,0x40000002,0xc0000043,0x40000062,0x80000001,0x40000042,0x40000042,0x40000002,0x00000002,0x00000040,0x80000002,0x80000000,0x80000002,0x80000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000000,0x00000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000101,0x00000009,0x00000012,0x00000202,0x0000001a,0x00000124,0x0000040c,0x00000026,0x0000004a,0x0000080a } }
, {1,52,0,65,0,15, { 0x04000010,0xe8000000,0x0800000c,0x18000000,0xb800000a,0xc8000010,0x2c000010,0xf4000014,0xb4000008,0x08000000,0x9800000c,0xd8000010,0x08000010,0xb8000010,0x98000000,0x60000000,0x00000008,0xc0000000,0x90000014,0x10000010,0xb8000014,0x28000000,0x20000010,0x48000000,0x08000018,0x60000000,0x90000010,0xf0000010,0x90000008,0xc0000000,0x90000010,0xf0000010,0xb0000008,0x40000000,0x90000000,0xf0000010,0x90000018,0x60000000,0x90000010,0x90000010,0x90000000,0x80000000,0x00000010,0xa0000000,0x20000000,0xa0000000,0x20000010,0x00000000,0x20000010,0x20000000,0x00000010,0x20000000,0x00000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000040,0x40000002,0x80000004,0x80000080,0x80000006,0x00000049,0x00000103,0x80000009,0x80000012 } }
, {2,45,0,58,0,16, { 0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b,0x0000011b,0x8000016d,0x8000041a,0x000002e4,0x80000054,0x00000967 } }
, {2,46,0,58,0,17, { 0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b,0x0000011b,0x8000016d,0x8000041a,0x000002e4,0x80000054 } }
, {2,46,2,58,0,18, { 0x90000070,0xb0000053,0x30000008,0x00000043,0xd0000072,0xb0000010,0xf0000062,0xc0000042,0x00000030,0xe0000042,0x20000060,0xe0000041,0x20000050,0xc0000041,0xe0000072,0xa0000003,0xc0000012,0x60000041,0xc0000032,0x20000001,0xc0000002,0xe0000042,0x60000042,0x80000002,0x00000000,0x00000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000001,0x00000060,0x80000003,0x40000002,0xc0000040,0xc0000002,0x80000000,0x80000000,0x80000002,0x00000040,0x00000002,0x80000000,0x80000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000105,0x00000089,0x00000016,0x0000020b,0x0000011b,0x0000012d,0x0000041e,0x00000224,0x00000050,0x0000092e,0x0000046c,0x000005b6,0x0000106a,0x00000b90,0x00000152 } }
, {2,47,0,58,0,19, { 0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b,0x0000011b,0x8000016d,0x8000041a,0x000002e4 } }
, {2,48,0,58,0,20, { 0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b,0x0000011b,0x8000016d,0x8000041a } }
, {2,49,0,58,0,21, { 0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b,0x0000011b,0x8000016d } }
, {2,49,2,58,0,22, { 0xf0000010,0xf000006a,0x80000040,0x90000070,0xb0000053,0x30000008,0x00000043,0xd0000072,0xb0000010,0xf0000062,0xc0000042,0x00000030,0xe0000042,0x20000060,0xe0000041,0x20000050,0xc0000041,0xe0000072,0xa0000003,0xc0000012,0x60000041,0xc0000032,0x20000001,0xc0000002,0xe0000042,0x60000042,0x80000002,0x00000000,0x00000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000001,0x00000060,0x80000003,0x40000002,0xc0000040,0xc0000002,0x80000000,0x80000000,0x80000002,0x00000040,0x00000002,0x80000000,0x80000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000105,0x00000089,0x00000016,0x0000020b,0x0000011b,0x0000012d,0x0000041e,0x00000224,0x00000050,0x0000092e,0x0000046c,0x000005b6 } }
, {2,50,0,65,0,23, { 0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b,0x0000011b } }
, {2,50,2,65,0,24, { 0xd0000072,0xf0000010,0xf000006a,0x80000040,0x90000070,0xb0000053,0x30000008,0x00000043,0xd0000072,0xb0000010,0xf0000062,0xc0000042,0x00000030,0xe0000042,0x20000060,0xe0000041,0x20000050,0xc0000041,0xe0000072,0xa0000003,0xc0000012,0x60000041,0xc0000032,0x20000001,0xc0000002,0xe0000042,0x60000042,0x80000002,0x00000000,0x00000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000001,0x00000060,0x80000003,0x40000002,0xc0000040,0xc0000002,0x80000000,0x80000000,0x80000002,0x00000040,0x00000002,0x80000000,0x80000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000105,0x00000089,0x00000016,0x0000020b,0x0000011b,0x0000012d,0x0000041e,0x00000224,0x00000050,0x0000092e,0x0000046c } }
, {2,51,0,65,0,25, { 0xc0000010,0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014,0x8000024b } }
, {2,51,2,65,0,26, { 0x00000043,0xd0000072,0xf0000010,0xf000006a,0x80000040,0x90000070,0xb0000053,0x30000008,0x00000043,0xd0000072,0xb0000010,0xf0000062,0xc0000042,0x00000030,0xe0000042,0x20000060,0xe0000041,0x20000050,0xc0000041,0xe0000072,0xa0000003,0xc0000012,0x60000041,0xc0000032,0x20000001,0xc0000002,0xe0000042,0x60000042,0x80000002,0x00000000,0x00000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000000,0x00000040,0x80000001,0x00000060,0x80000003,0x40000002,0xc0000040,0xc0000002,0x80000000,0x80000000,0x80000002,0x00000040,0x00000002,0x80000000,0x80000000,0x80000000,0x00000002,0x00000040,0x00000000,0x80000040,0x80000002,0x00000000,0x80000000,0x80000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000004,0x00000080,0x00000004,0x00000009,0x00000105,0x00000089,0x00000016,0x0000020b,0x0000011b,0x0000012d,0x0000041e,0x00000224,0x00000050,0x0000092e } }
, {2,52,0,65,0,27, { 0x0c000002,0xc0000010,0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089,0x00000014 } }
, {2,53,0,65,0,28, { 0xcc000014,0x0c000002,0xc0000010,0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107,0x00000089 } }
, {2,54,0,65,0,29, { 0x0400001c,0xcc000014,0x0c000002,0xc0000010,0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b,0x80000107 } }
, {2,55,0,65,0,30, { 0x00000010,0x0400001c,0xcc000014,0x0c000002,0xc0000010,0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046,0x4000004b } }
, {2,56,0,65,0,31, { 0x2600001a,0x00000010,0x0400001c,0xcc000014,0x0c000002,0xc0000010,0xb400001c,0x3c000004,0xbc00001a,0x20000010,0x2400001c,0xec000014,0x0c000002,0xc0000010,0xb400001c,0x2c000004,0xbc000018,0xb0000010,0x0000000c,0xb8000010,0x08000018,0x78000010,0x08000014,0x70000010,0xb800001c,0xe8000000,0xb0000004,0x58000010,0xb000000c,0x48000000,0xb0000000,0xb8000010,0x98000010,0xa0000000,0x00000000,0x00000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0x20000000,0x00000010,0x60000000,0x00000018,0xe0000000,0x90000000,0x30000010,0xb0000000,0x20000000,0x20000000,0xa0000000,0x00000010,0x80000000,0x20000000,0x20000000,0x20000000,0x80000000,0x00000010,0x00000000,0x20000010,0xa0000000,0x00000000,0x20000000,0x20000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000001,0x00000020,0x00000001,0x40000002,0x40000041,0x40000022,0x80000005,0xc0000082,0xc0000046 } }
, {0,0,0,0,0,0, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}
};
void ubc_check(const uint32_t W[80], uint32_t dvmask[1])
{
  uint32_t mask = ~((uint32_t)(0));
  mask &= (((((W[44]^W[45])>>29)&1)-1) | ~(DV_I_48_0_bit|DV_I_51_0_bit|DV_I_52_0_bit|DV_II_45_0_bit|DV_II_46_0_bit|DV_II_50_0_bit|DV_II_51_0_bit));
  mask &= (((((W[49]^W[50])>>29)&1)-1) | ~(DV_I_46_0_bit|DV_II_45_0_bit|DV_II_50_0_bit|DV_II_51_0_bit|DV_II_55_0_bit|DV_II_56_0_bit));
  mask &= (((((W[48]^W[49])>>29)&1)-1) | ~(DV_I_45_0_bit|DV_I_52_0_bit|DV_II_49_0_bit|DV_II_50_0_bit|DV_II_54_0_bit|DV_II_55_0_bit));
  mask &= ((((W[47]^(W[50]>>25))&(1<<4))-(1<<4)) | ~(DV_I_47_0_bit|DV_I_49_0_bit|DV_I_51_0_bit|DV_II_45_0_bit|DV_II_51_0_bit|DV_II_56_0_bit));
  mask &= (((((W[47]^W[48])>>29)&1)-1) | ~(DV_I_44_0_bit|DV_I_51_0_bit|DV_II_48_0_bit|DV_II_49_0_bit|DV_II_53_0_bit|DV_II_54_0_bit));
  mask &= (((((W[46]>>4)^(W[49]>>29))&1)-1) | ~(DV_I_46_0_bit|DV_I_48_0_bit|DV_I_50_0_bit|DV_I_52_0_bit|DV_II_50_0_bit|DV_II_55_0_bit));
  mask &= (((((W[46]^W[47])>>29)&1)-1) | ~(DV_I_43_0_bit|DV_I_50_0_bit|DV_II_47_0_bit|DV_II_48_0_bit|DV_II_52_0_bit|DV_II_53_0_bit));
  mask &= (((((W[45]>>4)^(W[48]>>29))&1)-1) | ~(DV_I_45_0_bit|DV_I_47_0_bit|DV_I_49_0_bit|DV_I_51_0_bit|DV_II_49_0_bit|DV_II_54_0_bit));
  mask &= (((((W[45]^W[46])>>29)&1)-1) | ~(DV_I_49_0_bit|DV_I_52_0_bit|DV_II_46_0_bit|DV_II_47_0_bit|DV_II_51_0_bit|DV_II_52_0_bit));
  mask &= (((((W[44]>>4)^(W[47]>>29))&1)-1) | ~(DV_I_44_0_bit|DV_I_46_0_bit|DV_I_48_0_bit|DV_I_50_0_bit|DV_II_48_0_bit|DV_II_53_0_bit));
  mask &= (((((W[43]>>4)^(W[46]>>29))&1)-1) | ~(DV_I_43_0_bit|DV_I_45_0_bit|DV_I_47_0_bit|DV_I_49_0_bit|DV_II_47_0_bit|DV_II_52_0_bit));
  mask &= (((((W[43]^W[44])>>29)&1)-1) | ~(DV_I_47_0_bit|DV_I_50_0_bit|DV_I_51_0_bit|DV_II_45_0_bit|DV_II_49_0_bit|DV_II_50_0_bit));
  mask &= (((((W[42]>>4)^(W[45]>>29))&1)-1) | ~(DV_I_44_0_bit|DV_I_46_0_bit|DV_I_48_0_bit|DV_I_52_0_bit|DV_II_46_0_bit|DV_II_51_0_bit));
  mask &= (((((W[41]>>4)^(W[44]>>29))&1)-1) | ~(DV_I_43_0_bit|DV_I_45_0_bit|DV_I_47_0_bit|DV_I_51_0_bit|DV_II_45_0_bit|DV_II_50_0_bit));
  mask &= (((((W[40]^W[41])>>29)&1)-1) | ~(DV_I_44_0_bit|DV_I_47_0_bit|DV_I_48_0_bit|DV_II_46_0_bit|DV_II_47_0_bit|DV_II_56_0_bit));
  mask &= (((((W[54]^W[55])>>29)&1)-1) | ~(DV_I_51_0_bit|DV_II_47_0_bit|DV_II_50_0_bit|DV_II_55_0_bit|DV_II_56_0_bit));
  mask &= (((((W[53]^W[54])>>29)&1)-1) | ~(DV_I_50_0_bit|DV_II_46_0_bit|DV_II_49_0_bit|DV_II_54_0_bit|DV_II_55_0_bit));
  mask &= (((((W[52]^W[53])>>29)&1)-1) | ~(DV_I_49_0_bit|DV_II_45_0_bit|DV_II_48_0_bit|DV_II_53_0_bit|DV_II_54_0_bit));
  mask &= ((((W[50]^(W[53]>>25))&(1<<4))-(1<<4)) | ~(DV_I_50_0_bit|DV_I_52_0_bit|DV_II_46_0_bit|DV_II_48_0_bit|DV_II_54_0_bit));
  mask &= (((((W[50]^W[51])>>29)&1)-1) | ~(DV_I_47_0_bit|DV_II_46_0_bit|DV_II_51_0_bit|DV_II_52_0_bit|DV_II_56_0_bit));
  mask &= ((((W[49]^(W[52]>>25))&(1<<4))-(1<<4)) | ~(DV_I_49_0_bit|DV_I_51_0_bit|DV_II_45_0_bit|DV_II_47_0_bit|DV_II_53_0_bit));
  mask &= ((((W[48]^(W[51]>>25))&(1<<4))-(1<<4)) | ~(DV_I_48_0_bit|DV_I_50_0_bit|DV_I_52_0_bit|DV_II_46_0_bit|DV_II_52_0_bit));
  mask &= (((((W[42]^W[43])>>29)&1)-1) | ~(DV_I_46_0_bit|DV_I_49_0_bit|DV_I_50_0_bit|DV_II_48_0_bit|DV_II_49_0_bit));
  mask &= (((((W[41]^W[42])>>29)&1)-1) | ~(DV_I_45_0_bit|DV_I_48_0_bit|DV_I_49_0_bit|DV_II_47_0_bit|DV_II_48_0_bit));
  mask &= (((((W[40]>>4)^(W[43]>>29))&1)-1) | ~(DV_I_44_0_bit|DV_I_46_0_bit|DV_I_50_0_bit|DV_II_49_0_bit|DV_II_56_0_bit));
  mask &= (((((W[39]>>4)^(W[42]>>29))&1)-1) | ~(DV_I_43_0_bit|DV_I_45_0_bit|DV_I_49_0_bit|DV_II_48_0_bit|DV_II_55_0_bit));
  if (mask & (DV_I_44_0_bit|DV_I_48_0_bit|DV_II_47_0_bit|DV_II_54_0_bit|DV_II_56_0_bit))
    mask &= (((((W[38]>>4)^(W[41]>>29))&1)-1) | ~(DV_I_44_0_bit|DV_I_48_0_bit|DV_II_47_0_bit|DV_II_54_0_bit|DV_II_56_0_bit));
  mask &= (((((W[37]>>4)^(W[40]>>29))&1)-1) | ~(DV_I_43_0_bit|DV_I_47_0_bit|DV_II_46_0_bit|DV_II_53_0_bit|DV_II_55_0_bit));
  if (mask & (DV_I_52_0_bit|DV_II_48_0_bit|DV_II_51_0_bit|DV_II_56_0_bit))
    mask &= (((((W[55]^W[56])>>29)&1)-1) | ~(DV_I_52_0_bit|DV_II_48_0_bit|DV_II_51_0_bit|DV_II_56_0_bit));
  if (mask & (DV_I_52_0_bit|DV_II_48_0_bit|DV_II_50_0_bit|DV_II_56_0_bit))
    mask &= ((((W[52]^(W[55]>>25))&(1<<4))-(1<<4)) | ~(DV_I_52_0_bit|DV_II_48_0_bit|DV_II_50_0_bit|DV_II_56_0_bit));
  if (mask & (DV_I_51_0_bit|DV_II_47_0_bit|DV_II_49_0_bit|DV_II_55_0_bit))
    mask &= ((((W[51]^(W[54]>>25))&(1<<4))-(1<<4)) | ~(DV_I_51_0_bit|DV_II_47_0_bit|DV_II_49_0_bit|DV_II_55_0_bit));
  if (mask & (DV_I_48_0_bit|DV_II_47_0_bit|DV_II_52_0_bit|DV_II_53_0_bit))
    mask &= (((((W[51]^W[52])>>29)&1)-1) | ~(DV_I_48_0_bit|DV_II_47_0_bit|DV_II_52_0_bit|DV_II_53_0_bit));
  if (mask & (DV_I_46_0_bit|DV_I_49_0_bit|DV_II_45_0_bit|DV_II_48_0_bit))
    mask &= (((((W[36]>>4)^(W[40]>>29))&1)-1) | ~(DV_I_46_0_bit|DV_I_49_0_bit|DV_II_45_0_bit|DV_II_48_0_bit));
  if (mask & (DV_I_52_0_bit|DV_II_48_0_bit|DV_II_49_0_bit))
    mask &= ((0-(((W[53]^W[56])>>29)&1)) | ~(DV_I_52_0_bit|DV_II_48_0_bit|DV_II_49_0_bit));
  if (mask & (DV_I_50_0_bit|DV_II_46_0_bit|DV_II_47_0_bit))
    mask &= ((0-(((W[51]^W[54])>>29)&1)) | ~(DV_I_50_0_bit|DV_II_46_0_bit|DV_II_47_0_bit));
  if (mask & (DV_I_49_0_bit|DV_I_51_0_bit|DV_II_45_0_bit))
    mask &= ((0-(((W[50]^W[52])>>29)&1)) | ~(DV_I_49_0_bit|DV_I_51_0_bit|DV_II_45_0_bit));
  if (mask & (DV_I_48_0_bit|DV_I_50_0_bit|DV_I_52_0_bit))
    mask &= ((0-(((W[49]^W[51])>>29)&1)) | ~(DV_I_48_0_bit|DV_I_50_0_bit|DV_I_52_0_bit));
  if (mask & (DV_I_47_0_bit|DV_I_49_0_bit|DV_I_51_0_bit))
    mask &= ((0-(((W[48]^W[50])>>29)&1)) | ~(DV_I_47_0_bit|DV_I_49_0_bit|DV_I_51_0_bit));
  if (mask & (DV_I_46_0_bit|DV_I_48_0_bit|DV_I_50_0_bit))
    mask &= ((0-(((W[47]^W[49])>>29)&1)) | ~(DV_I_46_0_bit|DV_I_48_0_bit|DV_I_50_0_bit));
  if (mask & (DV_I_45_0_bit|DV_I_47_0_bit|DV_I_49_0_bit))
    mask &= ((0-(((W[46]^W[48])>>29)&1)) | ~(DV_I_45_0_bit|DV_I_47_0_bit|DV_I_49_0_bit));
  mask &= ((((W[45]^W[47])&(1<<6))-(1<<6)) | ~(DV_I_47_2_bit|DV_I_49_2_bit|DV_I_51_2_bit));
  if (mask & (DV_I_44_0_bit|DV_I_46_0_bit|DV_I_48_0_bit))
    mask &= ((0-(((W[45]^W[47])>>29)&1)) | ~(DV_I_44_0_bit|DV_I_46_0_bit|DV_I_48_0_bit));
  mask &= (((((W[44]^W[46])>>6)&1)-1) | ~(DV_I_46_2_bit|DV_I_48_2_bit|DV_I_50_2_bit));
  if (mask & (DV_I_43_0_bit|DV_I_45_0_bit|DV_I_47_0_bit))
    mask &= ((0-(((W[44]^W[46])>>29)&1)) | ~(DV_I_43_0_bit|DV_I_45_0_bit|DV_I_47_0_bit));
  mask &= ((0-((W[41]^(W[42]>>5))&(1<<1))) | ~(DV_I_48_2_bit|DV_II_46_2_bit|DV_II_51_2_bit));
  mask &= ((0-((W[40]^(W[41]>>5))&(1<<1))) | ~(DV_I_47_2_bit|DV_I_51_2_bit|DV_II_50_2_bit));
  if (mask & (DV_I_44_0_bit|DV_I_46_0_bit|DV_II_56_0_bit))
    mask &= ((0-(((W[40]^W[42])>>4)&1)) | ~(DV_I_44_0_bit|DV_I_46_0_bit|DV_II_56_0_bit));
  mask &= ((0-((W[39]^(W[40]>>5))&(1<<1))) | ~(DV_I_46_2_bit|DV_I_50_2_bit|DV_II_49_2_bit));
  if (mask & (DV_I_43_0_bit|DV_I_45_0_bit|DV_II_55_0_bit))
    mask &= ((0-(((W[39]^W[41])>>4)&1)) | ~(DV_I_43_0_bit|DV_I_45_0_bit|DV_II_55_0_bit));
  if (mask & (DV_I_44_0_bit|DV_II_54_0_bit|DV_II_56_0_bit))
    mask &= ((0-(((W[38]^W[40])>>4)&1)) | ~(DV_I_44_0_bit|DV_II_54_0_bit|DV_II_56_0_bit));
  if (mask & (DV_I_43_0_bit|DV_II_53_0_bit|DV_II_55_0_bit))
    mask &= ((0-(((W[37]^W[39])>>4)&1)) | ~(DV_I_43_0_bit|DV_II_53_0_bit|DV_II_55_0_bit));
  mask &= ((0-((W[36]^(W[37]>>5))&(1<<1))) | ~(DV_I_47_2_bit|DV_I_50_2_bit|DV_II_46_2_bit));
  if (mask & (DV_I_45_0_bit|DV_I_48_0_bit|DV_II_47_0_bit))
    mask &= (((((W[35]>>4)^(W[39]>>29))&1)-1) | ~(DV_I_45_0_bit|DV_I_48_0_bit|DV_II_47_0_bit));
  if (mask & (DV_I_48_0_bit|DV_II_48_0_bit))
    mask &= ((0-((W[63]^(W[64]>>5))&(1<<0))) | ~(DV_I_48_0_bit|DV_II_48_0_bit));
  if (mask & (DV_I_45_0_bit|DV_II_45_0_bit))
    mask &= ((0-((W[63]^(W[64]>>5))&(1<<1))) | ~(DV_I_45_0_bit|DV_II_45_0_bit));
  if (mask & (DV_I_47_0_bit|DV_II_47_0_bit))
    mask &= ((0-((W[62]^(W[63]>>5))&(1<<0))) | ~(DV_I_47_0_bit|DV_II_47_0_bit));
  if (mask & (DV_I_46_0_bit|DV_II_46_0_bit))
    mask &= ((0-((W[61]^(W[62]>>5))&(1<<0))) | ~(DV_I_46_0_bit|DV_II_46_0_bit));
  mask &= ((0-((W[61]^(W[62]>>5))&(1<<2))) | ~(DV_I_46_2_bit|DV_II_46_2_bit));
  if (mask & (DV_I_45_0_bit|DV_II_45_0_bit))
    mask &= ((0-((W[60]^(W[61]>>5))&(1<<0))) | ~(DV_I_45_0_bit|DV_II_45_0_bit));
  if (mask & (DV_II_51_0_bit|DV_II_54_0_bit))
    mask &= (((((W[58]^W[59])>>29)&1)-1) | ~(DV_II_51_0_bit|DV_II_54_0_bit));
  if (mask & (DV_II_50_0_bit|DV_II_53_0_bit))
    mask &= (((((W[57]^W[58])>>29)&1)-1) | ~(DV_II_50_0_bit|DV_II_53_0_bit));
  if (mask & (DV_II_52_0_bit|DV_II_54_0_bit))
    mask &= ((((W[56]^(W[59]>>25))&(1<<4))-(1<<4)) | ~(DV_II_52_0_bit|DV_II_54_0_bit));
  if (mask & (DV_II_51_0_bit|DV_II_52_0_bit))
    mask &= ((0-(((W[56]^W[59])>>29)&1)) | ~(DV_II_51_0_bit|DV_II_52_0_bit));
  if (mask & (DV_II_49_0_bit|DV_II_52_0_bit))
    mask &= (((((W[56]^W[57])>>29)&1)-1) | ~(DV_II_49_0_bit|DV_II_52_0_bit));
  if (mask & (DV_II_51_0_bit|DV_II_53_0_bit))
    mask &= ((((W[55]^(W[58]>>25))&(1<<4))-(1<<4)) | ~(DV_II_51_0_bit|DV_II_53_0_bit));
  if (mask & (DV_II_50_0_bit|DV_II_52_0_bit))
    mask &= ((((W[54]^(W[57]>>25))&(1<<4))-(1<<4)) | ~(DV_II_50_0_bit|DV_II_52_0_bit));
  if (mask & (DV_II_49_0_bit|DV_II_51_0_bit))
    mask &= ((((W[53]^(W[56]>>25))&(1<<4))-(1<<4)) | ~(DV_II_49_0_bit|DV_II_51_0_bit));
  mask &= ((((W[51]^(W[50]>>5))&(1<<1))-(1<<1)) | ~(DV_I_50_2_bit|DV_II_46_2_bit));
  mask &= ((((W[48]^W[50])&(1<<6))-(1<<6)) | ~(DV_I_50_2_bit|DV_II_46_2_bit));
  if (mask & (DV_I_51_0_bit|DV_I_52_0_bit))
    mask &= ((0-(((W[48]^W[55])>>29)&1)) | ~(DV_I_51_0_bit|DV_I_52_0_bit));
  mask &= ((((W[47]^W[49])&(1<<6))-(1<<6)) | ~(DV_I_49_2_bit|DV_I_51_2_bit));
  mask &= ((((W[48]^(W[47]>>5))&(1<<1))-(1<<1)) | ~(DV_I_47_2_bit|DV_II_51_2_bit));
  mask &= ((((W[46]^W[48])&(1<<6))-(1<<6)) | ~(DV_I_48_2_bit|DV_I_50_2_bit));
  mask &= ((((W[47]^(W[46]>>5))&(1<<1))-(1<<1)) | ~(DV_I_46_2_bit|DV_II_50_2_bit));
  mask &= ((0-((W[44]^(W[45]>>5))&(1<<1))) | ~(DV_I_51_2_bit|DV_II_49_2_bit));
  mask &= ((((W[43]^W[45])&(1<<6))-(1<<6)) | ~(DV_I_47_2_bit|DV_I_49_2_bit));
  mask &= (((((W[42]^W[44])>>6)&1)-1) | ~(DV_I_46_2_bit|DV_I_48_2_bit));
  mask &= ((((W[43]^(W[42]>>5))&(1<<1))-(1<<1)) | ~(DV_II_46_2_bit|DV_II_51_2_bit));
  mask &= ((((W[42]^(W[41]>>5))&(1<<1))-(1<<1)) | ~(DV_I_51_2_bit|DV_II_50_2_bit));
  mask &= ((((W[41]^(W[40]>>5))&(1<<1))-(1<<1)) | ~(DV_I_50_2_bit|DV_II_49_2_bit));
  if (mask & (DV_I_52_0_bit|DV_II_51_0_bit))
    mask &= ((((W[39]^(W[43]>>25))&(1<<4))-(1<<4)) | ~(DV_I_52_0_bit|DV_II_51_0_bit));
  if (mask & (DV_I_51_0_bit|DV_II_50_0_bit))
    mask &= ((((W[38]^(W[42]>>25))&(1<<4))-(1<<4)) | ~(DV_I_51_0_bit|DV_II_50_0_bit));
  if (mask & (DV_I_48_2_bit|DV_I_51_2_bit))
    mask &= ((0-((W[37]^(W[38]>>5))&(1<<1))) | ~(DV_I_48_2_bit|DV_I_51_2_bit));
  if (mask & (DV_I_50_0_bit|DV_II_49_0_bit))
    mask &= ((((W[37]^(W[41]>>25))&(1<<4))-(1<<4)) | ~(DV_I_50_0_bit|DV_II_49_0_bit));
  if (mask & (DV_II_52_0_bit|DV_II_54_0_bit))
    mask &= ((0-((W[36]^W[38])&(1<<4))) | ~(DV_II_52_0_bit|DV_II_54_0_bit));
  mask &= ((0-((W[35]^(W[36]>>5))&(1<<1))) | ~(DV_I_46_2_bit|DV_I_49_2_bit));
  if (mask & (DV_I_51_0_bit|DV_II_47_0_bit))
    mask &= ((((W[35]^(W[39]>>25))&(1<<3))-(1<<3)) | ~(DV_I_51_0_bit|DV_II_47_0_bit));
if (mask) {

  if (mask & DV_I_43_0_bit)
     if (
          !((W[61]^(W[62]>>5)) & (1<<1))
       || !(!((W[59]^(W[63]>>25)) & (1<<5)))
       || !((W[58]^(W[63]>>30)) & (1<<0))
     )  mask &= ~DV_I_43_0_bit;
  if (mask & DV_I_44_0_bit)
     if (
          !((W[62]^(W[63]>>5)) & (1<<1))
       || !(!((W[60]^(W[64]>>25)) & (1<<5)))
       || !((W[59]^(W[64]>>30)) & (1<<0))
     )  mask &= ~DV_I_44_0_bit;
  if (mask & DV_I_46_2_bit)
    mask &= ((~((W[40]^W[42])>>2)) | ~DV_I_46_2_bit);
  if (mask & DV_I_47_2_bit)
     if (
          !((W[62]^(W[63]>>5)) & (1<<2))
       || !(!((W[41]^W[43]) & (1<<6)))
     )  mask &= ~DV_I_47_2_bit;
  if (mask & DV_I_48_2_bit)
     if (
          !((W[63]^(W[64]>>5)) & (1<<2))
       || !(!((W[48]^(W[49]<<5)) & (1<<6)))
     )  mask &= ~DV_I_48_2_bit;
  if (mask & DV_I_49_2_bit)
     if (
          !(!((W[49]^(W[50]<<5)) & (1<<6)))
       || !((W[42]^W[50]) & (1<<1))
       || !(!((W[39]^(W[40]<<5)) & (1<<6)))
       || !((W[38]^W[40]) & (1<<1))
     )  mask &= ~DV_I_49_2_bit;
  if (mask & DV_I_50_0_bit)
    mask &= ((((W[36]^W[37])<<7)) | ~DV_I_50_0_bit);
  if (mask & DV_I_50_2_bit)
    mask &= ((((W[43]^W[51])<<11)) | ~DV_I_50_2_bit);
  if (mask & DV_I_51_0_bit)
    mask &= ((((W[37]^W[38])<<9)) | ~DV_I_51_0_bit);
  if (mask & DV_I_51_2_bit)
     if (
          !(!((W[51]^(W[52]<<5)) & (1<<6)))
       || !(!((W[49]^W[51]) & (1<<6)))
       || !(!((W[37]^(W[37]>>5)) & (1<<1)))
       || !(!((W[35]^(W[39]>>25)) & (1<<5)))
     )  mask &= ~DV_I_51_2_bit;
  if (mask & DV_I_52_0_bit)
    mask &= ((((W[38]^W[39])<<11)) | ~DV_I_52_0_bit);
  if (mask & DV_II_46_2_bit)
    mask &= ((((W[47]^W[51])<<17)) | ~DV_II_46_2_bit);
  if (mask & DV_II_48_0_bit)
     if (
          !(!((W[36]^(W[40]>>25)) & (1<<3)))
       || !((W[35]^(W[40]<<2)) & (1<<30))
     )  mask &= ~DV_II_48_0_bit;
  if (mask & DV_II_49_0_bit)
     if (
          !(!((W[37]^(W[41]>>25)) & (1<<3)))
       || !((W[36]^(W[41]<<2)) & (1<<30))
     )  mask &= ~DV_II_49_0_bit;
  if (mask & DV_II_49_2_bit)
     if (
          !(!((W[53]^(W[54]<<5)) & (1<<6)))
       || !(!((W[51]^W[53]) & (1<<6)))
       || !((W[50]^W[54]) & (1<<1))
       || !(!((W[45]^(W[46]<<5)) & (1<<6)))
       || !(!((W[37]^(W[41]>>25)) & (1<<5)))
       || !((W[36]^(W[41]>>30)) & (1<<0))
     )  mask &= ~DV_II_49_2_bit;
  if (mask & DV_II_50_0_bit)
     if (
          !((W[55]^W[58]) & (1<<29))
       || !(!((W[38]^(W[42]>>25)) & (1<<3)))
       || !((W[37]^(W[42]<<2)) & (1<<30))
     )  mask &= ~DV_II_50_0_bit;
  if (mask & DV_II_50_2_bit)
     if (
          !(!((W[54]^(W[55]<<5)) & (1<<6)))
       || !(!((W[52]^W[54]) & (1<<6)))
       || !((W[51]^W[55]) & (1<<1))
       || !((W[45]^W[47]) & (1<<1))
       || !(!((W[38]^(W[42]>>25)) & (1<<5)))
       || !((W[37]^(W[42]>>30)) & (1<<0))
     )  mask &= ~DV_II_50_2_bit;
  if (mask & DV_II_51_0_bit)
     if (
          !(!((W[39]^(W[43]>>25)) & (1<<3)))
       || !((W[38]^(W[43]<<2)) & (1<<30))
     )  mask &= ~DV_II_51_0_bit;
  if (mask & DV_II_51_2_bit)
     if (
          !(!((W[55]^(W[56]<<5)) & (1<<6)))
       || !(!((W[53]^W[55]) & (1<<6)))
       || !((W[52]^W[56]) & (1<<1))
       || !((W[46]^W[48]) & (1<<1))
       || !(!((W[39]^(W[43]>>25)) & (1<<5)))
       || !((W[38]^(W[43]>>30)) & (1<<0))
     )  mask &= ~DV_II_51_2_bit;
  if (mask & DV_II_52_0_bit)
     if (
          !(!((W[59]^W[60]) & (1<<29)))
       || !(!((W[40]^(W[44]>>25)) & (1<<3)))
       || !(!((W[40]^(W[44]>>25)) & (1<<4)))
       || !((W[39]^(W[44]<<2)) & (1<<30))
     )  mask &= ~DV_II_52_0_bit;
  if (mask & DV_II_53_0_bit)
     if (
          !((W[58]^W[61]) & (1<<29))
       || !(!((W[57]^(W[61]>>25)) & (1<<4)))
       || !(!((W[41]^(W[45]>>25)) & (1<<3)))
       || !(!((W[41]^(W[45]>>25)) & (1<<4)))
     )  mask &= ~DV_II_53_0_bit;
  if (mask & DV_II_54_0_bit)
     if (
          !(!((W[58]^(W[62]>>25)) & (1<<4)))
       || !(!((W[42]^(W[46]>>25)) & (1<<3)))
       || !(!((W[42]^(W[46]>>25)) & (1<<4)))
     )  mask &= ~DV_II_54_0_bit;
  if (mask & DV_II_55_0_bit)
     if (
          !(!((W[59]^(W[63]>>25)) & (1<<4)))
       || !(!((W[57]^(W[59]>>25)) & (1<<4)))
       || !(!((W[43]^(W[47]>>25)) & (1<<3)))
       || !(!((W[43]^(W[47]>>25)) & (1<<4)))
     )  mask &= ~DV_II_55_0_bit;
  if (mask & DV_II_56_0_bit)
     if (
          !(!((W[60]^(W[64]>>25)) & (1<<4)))
       || !(!((W[44]^(W[48]>>25)) & (1<<3)))
       || !(!((W[44]^(W[48]>>25)) & (1<<4)))
     )  mask &= ~DV_II_56_0_bit;
}

  dvmask[0]=mask;
}
/******************** End Of File: lib/ubc_check.c *******************/
/******************** Continue with: lib/sha1.c **********************/


#define rotate_right(x,n) (((x)>>(n))|((x)<<(32-(n))))
#define rotate_left(x,n)  (((x)<<(n))|((x)>>(32-(n))))

#define sha1_f1(b,c,d) ((d)^((b)&((c)^(d))))
#define sha1_f2(b,c,d) ((b)^(c)^(d))
#define sha1_f3(b,c,d) (((b) & ((c)|(d))) | ((c)&(d)))
#define sha1_f4(b,c,d) ((b)^(c)^(d))

#define HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, m, t) \
  { e += rotate_left(a, 5) + sha1_f1(b,c,d) + 0x5A827999 + m[t]; b = rotate_left(b, 30); }
#define HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, m, t) \
  { e += rotate_left(a, 5) + sha1_f2(b,c,d) + 0x6ED9EBA1 + m[t]; b = rotate_left(b, 30); }
#define HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, m, t) \
  { e += rotate_left(a, 5) + sha1_f3(b,c,d) + 0x8F1BBCDC + m[t]; b = rotate_left(b, 30); }
#define HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, m, t) \
  { e += rotate_left(a, 5) + sha1_f4(b,c,d) + 0xCA62C1D6 + m[t]; b = rotate_left(b, 30); }

#define HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(a, b, c, d, e, m, t) \
  { b = rotate_right(b, 30); e -= rotate_left(a, 5) + sha1_f1(b,c,d) + 0x5A827999 + m[t]; }
#define HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(a, b, c, d, e, m, t) \
  { b = rotate_right(b, 30); e -= rotate_left(a, 5) + sha1_f2(b,c,d) + 0x6ED9EBA1 + m[t]; }
#define HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(a, b, c, d, e, m, t) \
  { b = rotate_right(b, 30); e -= rotate_left(a, 5) + sha1_f3(b,c,d) + 0x8F1BBCDC + m[t]; }
#define HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(a, b, c, d, e, m, t) \
  { b = rotate_right(b, 30); e -= rotate_left(a, 5) + sha1_f4(b,c,d) + 0xCA62C1D6 + m[t]; }

#define SHA1_STORE_STATE(i) states[i][0] = a; states[i][1] = b; states[i][2] = c; states[i][3] = d; states[i][4] = e;



void sha1_message_expansion(uint32_t W[80])
{
  unsigned i;
  for (i = 16; i < 80; ++i)
    W[i] = rotate_left(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
}

void sha1_compression(uint32_t ihv[5], const uint32_t m[16])
{
  uint32_t W[80];
  uint32_t a,b,c,d,e;
  unsigned i;

  memcpy(W, m, 16 * 4);
  for (i = 16; i < 80; ++i)
    W[i] = rotate_left(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);

  a = ihv[0]; b = ihv[1]; c = ihv[2]; d = ihv[3]; e = ihv[4];

  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 0);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 1);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 2);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 3);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 4);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 5);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 6);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 7);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 8);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 9);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 10);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 11);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 12);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 13);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 14);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 15);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 16);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 17);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 18);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 19);

  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 20);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 21);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 22);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 23);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 24);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 25);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 26);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 27);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 28);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 29);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 30);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 31);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 32);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 33);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 34);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 35);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 36);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 37);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 38);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 39);

  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 40);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 41);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 42);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 43);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 44);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 45);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 46);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 47);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 48);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 49);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 50);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 51);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 52);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 53);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 54);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 55);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 56);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 57);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 58);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 59);

  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 60);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 61);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 62);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 63);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 64);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 65);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 66);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 67);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 68);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 69);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 70);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 71);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 72);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 73);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 74);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 75);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 76);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 77);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 78);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 79);

  ihv[0] += a; ihv[1] += b; ihv[2] += c; ihv[3] += d; ihv[4] += e;
}



void sha1_compression_W(uint32_t ihv[5], const uint32_t W[80])
{
  uint32_t a = ihv[0], b = ihv[1], c = ihv[2], d = ihv[3], e = ihv[4];

  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 0);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 1);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 2);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 3);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 4);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 5);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 6);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 7);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 8);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 9);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 10);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 11);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 12);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 13);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 14);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 15);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 16);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 17);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 18);
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 19);

  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 20);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 21);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 22);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 23);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 24);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 25);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 26);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 27);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 28);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 29);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 30);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 31);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 32);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 33);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 34);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 35);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 36);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 37);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 38);
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 39);

  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 40);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 41);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 42);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 43);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 44);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 45);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 46);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 47);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 48);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 49);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 50);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 51);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 52);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 53);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 54);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 55);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 56);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 57);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 58);
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 59);

  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 60);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 61);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 62);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 63);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 64);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 65);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 66);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 67);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 68);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 69);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 70);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 71);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 72);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 73);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 74);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 75);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 76);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 77);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 78);
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 79);

  ihv[0] += a; ihv[1] += b; ihv[2] += c; ihv[3] += d; ihv[4] += e;
}



void sha1_compression_states(uint32_t ihv[5], const uint32_t W[80], uint32_t states[80][5])
{
  uint32_t a = ihv[0], b = ihv[1], c = ihv[2], d = ihv[3], e = ihv[4];

#ifdef DOSTORESTATE00
  SHA1_STORE_STATE(0)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 0);

#ifdef DOSTORESTATE01
  SHA1_STORE_STATE(1)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 1);

#ifdef DOSTORESTATE02
  SHA1_STORE_STATE(2)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 2);

#ifdef DOSTORESTATE03
  SHA1_STORE_STATE(3)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 3);

#ifdef DOSTORESTATE04
  SHA1_STORE_STATE(4)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 4);

#ifdef DOSTORESTATE05
  SHA1_STORE_STATE(5)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 5);

#ifdef DOSTORESTATE06
  SHA1_STORE_STATE(6)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 6);

#ifdef DOSTORESTATE07
  SHA1_STORE_STATE(7)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 7);

#ifdef DOSTORESTATE08
  SHA1_STORE_STATE(8)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 8);

#ifdef DOSTORESTATE09
  SHA1_STORE_STATE(9)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 9);

#ifdef DOSTORESTATE10
  SHA1_STORE_STATE(10)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 10);

#ifdef DOSTORESTATE11
  SHA1_STORE_STATE(11)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 11);

#ifdef DOSTORESTATE12
  SHA1_STORE_STATE(12)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 12);

#ifdef DOSTORESTATE13
  SHA1_STORE_STATE(13)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 13);

#ifdef DOSTORESTATE14
  SHA1_STORE_STATE(14)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 14);

#ifdef DOSTORESTATE15
  SHA1_STORE_STATE(15)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, W, 15);

#ifdef DOSTORESTATE16
  SHA1_STORE_STATE(16)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, W, 16);

#ifdef DOSTORESTATE17
  SHA1_STORE_STATE(17)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, W, 17);

#ifdef DOSTORESTATE18
  SHA1_STORE_STATE(18)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, W, 18);

#ifdef DOSTORESTATE19
  SHA1_STORE_STATE(19)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, W, 19);



#ifdef DOSTORESTATE20
  SHA1_STORE_STATE(20)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 20);

#ifdef DOSTORESTATE21
  SHA1_STORE_STATE(21)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 21);

#ifdef DOSTORESTATE22
  SHA1_STORE_STATE(22)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 22);

#ifdef DOSTORESTATE23
  SHA1_STORE_STATE(23)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 23);

#ifdef DOSTORESTATE24
  SHA1_STORE_STATE(24)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 24);

#ifdef DOSTORESTATE25
  SHA1_STORE_STATE(25)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 25);

#ifdef DOSTORESTATE26
  SHA1_STORE_STATE(26)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 26);

#ifdef DOSTORESTATE27
  SHA1_STORE_STATE(27)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 27);

#ifdef DOSTORESTATE28
  SHA1_STORE_STATE(28)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 28);

#ifdef DOSTORESTATE29
  SHA1_STORE_STATE(29)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 29);

#ifdef DOSTORESTATE30
  SHA1_STORE_STATE(30)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 30);

#ifdef DOSTORESTATE31
  SHA1_STORE_STATE(31)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 31);

#ifdef DOSTORESTATE32
  SHA1_STORE_STATE(32)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 32);

#ifdef DOSTORESTATE33
  SHA1_STORE_STATE(33)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 33);

#ifdef DOSTORESTATE34
  SHA1_STORE_STATE(34)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 34);

#ifdef DOSTORESTATE35
  SHA1_STORE_STATE(35)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, W, 35);

#ifdef DOSTORESTATE36
  SHA1_STORE_STATE(36)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, W, 36);

#ifdef DOSTORESTATE37
  SHA1_STORE_STATE(37)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, W, 37);

#ifdef DOSTORESTATE38
  SHA1_STORE_STATE(38)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, W, 38);

#ifdef DOSTORESTATE39
  SHA1_STORE_STATE(39)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, W, 39);



#ifdef DOSTORESTATE40
  SHA1_STORE_STATE(40)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 40);

#ifdef DOSTORESTATE41
  SHA1_STORE_STATE(41)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 41);

#ifdef DOSTORESTATE42
  SHA1_STORE_STATE(42)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 42);

#ifdef DOSTORESTATE43
  SHA1_STORE_STATE(43)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 43);

#ifdef DOSTORESTATE44
  SHA1_STORE_STATE(44)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 44);

#ifdef DOSTORESTATE45
  SHA1_STORE_STATE(45)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 45);

#ifdef DOSTORESTATE46
  SHA1_STORE_STATE(46)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 46);

#ifdef DOSTORESTATE47
  SHA1_STORE_STATE(47)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 47);

#ifdef DOSTORESTATE48
  SHA1_STORE_STATE(48)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 48);

#ifdef DOSTORESTATE49
  SHA1_STORE_STATE(49)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 49);

#ifdef DOSTORESTATE50
  SHA1_STORE_STATE(50)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 50);

#ifdef DOSTORESTATE51
  SHA1_STORE_STATE(51)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 51);

#ifdef DOSTORESTATE52
  SHA1_STORE_STATE(52)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 52);

#ifdef DOSTORESTATE53
  SHA1_STORE_STATE(53)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 53);

#ifdef DOSTORESTATE54
  SHA1_STORE_STATE(54)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 54);

#ifdef DOSTORESTATE55
  SHA1_STORE_STATE(55)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, W, 55);

#ifdef DOSTORESTATE56
  SHA1_STORE_STATE(56)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, W, 56);

#ifdef DOSTORESTATE57
  SHA1_STORE_STATE(57)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, W, 57);

#ifdef DOSTORESTATE58
  SHA1_STORE_STATE(58)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, W, 58);

#ifdef DOSTORESTATE59
  SHA1_STORE_STATE(59)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, W, 59);




#ifdef DOSTORESTATE60
  SHA1_STORE_STATE(60)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 60);

#ifdef DOSTORESTATE61
  SHA1_STORE_STATE(61)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 61);

#ifdef DOSTORESTATE62
  SHA1_STORE_STATE(62)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 62);

#ifdef DOSTORESTATE63
  SHA1_STORE_STATE(63)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 63);

#ifdef DOSTORESTATE64
  SHA1_STORE_STATE(64)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 64);

#ifdef DOSTORESTATE65
  SHA1_STORE_STATE(65)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 65);

#ifdef DOSTORESTATE66
  SHA1_STORE_STATE(66)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 66);

#ifdef DOSTORESTATE67
  SHA1_STORE_STATE(67)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 67);

#ifdef DOSTORESTATE68
  SHA1_STORE_STATE(68)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 68);

#ifdef DOSTORESTATE69
  SHA1_STORE_STATE(69)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 69);

#ifdef DOSTORESTATE70
  SHA1_STORE_STATE(70)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 70);

#ifdef DOSTORESTATE71
  SHA1_STORE_STATE(71)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 71);

#ifdef DOSTORESTATE72
  SHA1_STORE_STATE(72)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 72);

#ifdef DOSTORESTATE73
  SHA1_STORE_STATE(73)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 73);

#ifdef DOSTORESTATE74
  SHA1_STORE_STATE(74)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 74);

#ifdef DOSTORESTATE75
  SHA1_STORE_STATE(75)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, W, 75);

#ifdef DOSTORESTATE76
  SHA1_STORE_STATE(76)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, W, 76);

#ifdef DOSTORESTATE77
  SHA1_STORE_STATE(77)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, W, 77);

#ifdef DOSTORESTATE78
  SHA1_STORE_STATE(78)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, W, 78);

#ifdef DOSTORESTATE79
  SHA1_STORE_STATE(79)
#endif
  HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, W, 79);



  ihv[0] += a; ihv[1] += b; ihv[2] += c; ihv[3] += d; ihv[4] += e;
}




#define SHA1_RECOMPRESS(t) \
void sha1recompress_fast_ ## t (uint32_t ihvin[5], uint32_t ihvout[5], const uint32_t me2[80], const uint32_t state[5]) \
{ \
  uint32_t a = state[0], b = state[1], c = state[2], d = state[3], e = state[4]; \
  if (t > 79) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(b, c, d, e, a, me2, 79); \
  if (t > 78) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(c, d, e, a, b, me2, 78); \
  if (t > 77) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(d, e, a, b, c, me2, 77); \
  if (t > 76) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(e, a, b, c, d, me2, 76); \
  if (t > 75) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(a, b, c, d, e, me2, 75); \
  if (t > 74) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(b, c, d, e, a, me2, 74); \
  if (t > 73) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(c, d, e, a, b, me2, 73); \
  if (t > 72) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(d, e, a, b, c, me2, 72); \
  if (t > 71) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(e, a, b, c, d, me2, 71); \
  if (t > 70) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(a, b, c, d, e, me2, 70); \
  if (t > 69) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(b, c, d, e, a, me2, 69); \
  if (t > 68) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(c, d, e, a, b, me2, 68); \
  if (t > 67) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(d, e, a, b, c, me2, 67); \
  if (t > 66) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(e, a, b, c, d, me2, 66); \
  if (t > 65) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(a, b, c, d, e, me2, 65); \
  if (t > 64) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(b, c, d, e, a, me2, 64); \
  if (t > 63) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(c, d, e, a, b, me2, 63); \
  if (t > 62) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(d, e, a, b, c, me2, 62); \
  if (t > 61) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(e, a, b, c, d, me2, 61); \
  if (t > 60) HASHCLASH_SHA1COMPRESS_ROUND4_STEP_BW(a, b, c, d, e, me2, 60); \
  if (t > 59) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(b, c, d, e, a, me2, 59); \
  if (t > 58) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(c, d, e, a, b, me2, 58); \
  if (t > 57) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(d, e, a, b, c, me2, 57); \
  if (t > 56) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(e, a, b, c, d, me2, 56); \
  if (t > 55) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(a, b, c, d, e, me2, 55); \
  if (t > 54) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(b, c, d, e, a, me2, 54); \
  if (t > 53) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(c, d, e, a, b, me2, 53); \
  if (t > 52) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(d, e, a, b, c, me2, 52); \
  if (t > 51) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(e, a, b, c, d, me2, 51); \
  if (t > 50) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(a, b, c, d, e, me2, 50); \
  if (t > 49) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(b, c, d, e, a, me2, 49); \
  if (t > 48) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(c, d, e, a, b, me2, 48); \
  if (t > 47) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(d, e, a, b, c, me2, 47); \
  if (t > 46) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(e, a, b, c, d, me2, 46); \
  if (t > 45) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(a, b, c, d, e, me2, 45); \
  if (t > 44) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(b, c, d, e, a, me2, 44); \
  if (t > 43) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(c, d, e, a, b, me2, 43); \
  if (t > 42) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(d, e, a, b, c, me2, 42); \
  if (t > 41) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(e, a, b, c, d, me2, 41); \
  if (t > 40) HASHCLASH_SHA1COMPRESS_ROUND3_STEP_BW(a, b, c, d, e, me2, 40); \
  if (t > 39) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(b, c, d, e, a, me2, 39); \
  if (t > 38) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(c, d, e, a, b, me2, 38); \
  if (t > 37) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(d, e, a, b, c, me2, 37); \
  if (t > 36) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(e, a, b, c, d, me2, 36); \
  if (t > 35) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(a, b, c, d, e, me2, 35); \
  if (t > 34) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(b, c, d, e, a, me2, 34); \
  if (t > 33) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(c, d, e, a, b, me2, 33); \
  if (t > 32) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(d, e, a, b, c, me2, 32); \
  if (t > 31) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(e, a, b, c, d, me2, 31); \
  if (t > 30) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(a, b, c, d, e, me2, 30); \
  if (t > 29) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(b, c, d, e, a, me2, 29); \
  if (t > 28) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(c, d, e, a, b, me2, 28); \
  if (t > 27) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(d, e, a, b, c, me2, 27); \
  if (t > 26) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(e, a, b, c, d, me2, 26); \
  if (t > 25) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(a, b, c, d, e, me2, 25); \
  if (t > 24) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(b, c, d, e, a, me2, 24); \
  if (t > 23) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(c, d, e, a, b, me2, 23); \
  if (t > 22) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(d, e, a, b, c, me2, 22); \
  if (t > 21) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(e, a, b, c, d, me2, 21); \
  if (t > 20) HASHCLASH_SHA1COMPRESS_ROUND2_STEP_BW(a, b, c, d, e, me2, 20); \
  if (t > 19) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(b, c, d, e, a, me2, 19); \
  if (t > 18) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(c, d, e, a, b, me2, 18); \
  if (t > 17) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(d, e, a, b, c, me2, 17); \
  if (t > 16) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(e, a, b, c, d, me2, 16); \
  if (t > 15) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(a, b, c, d, e, me2, 15); \
  if (t > 14) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(b, c, d, e, a, me2, 14); \
  if (t > 13) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(c, d, e, a, b, me2, 13); \
  if (t > 12) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(d, e, a, b, c, me2, 12); \
  if (t > 11) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(e, a, b, c, d, me2, 11); \
  if (t > 10) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(a, b, c, d, e, me2, 10); \
  if (t > 9) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(b, c, d, e, a, me2, 9); \
  if (t > 8) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(c, d, e, a, b, me2, 8); \
  if (t > 7) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(d, e, a, b, c, me2, 7); \
  if (t > 6) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(e, a, b, c, d, me2, 6); \
  if (t > 5) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(a, b, c, d, e, me2, 5); \
  if (t > 4) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(b, c, d, e, a, me2, 4); \
  if (t > 3) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(c, d, e, a, b, me2, 3); \
  if (t > 2) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(d, e, a, b, c, me2, 2); \
  if (t > 1) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(e, a, b, c, d, me2, 1); \
  if (t > 0) HASHCLASH_SHA1COMPRESS_ROUND1_STEP_BW(a, b, c, d, e, me2, 0); \
  ihvin[0] = a; ihvin[1] = b; ihvin[2] = c; ihvin[3] = d; ihvin[4] = e; \
  a = state[0]; b = state[1]; c = state[2]; d = state[3]; e = state[4]; \
  if (t <= 0) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, me2, 0); \
  if (t <= 1) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, me2, 1); \
  if (t <= 2) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, me2, 2); \
  if (t <= 3) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, me2, 3); \
  if (t <= 4) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, me2, 4); \
  if (t <= 5) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, me2, 5); \
  if (t <= 6) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, me2, 6); \
  if (t <= 7) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, me2, 7); \
  if (t <= 8) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, me2, 8); \
  if (t <= 9) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, me2, 9); \
  if (t <= 10) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, me2, 10); \
  if (t <= 11) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, me2, 11); \
  if (t <= 12) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, me2, 12); \
  if (t <= 13) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, me2, 13); \
  if (t <= 14) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, me2, 14); \
  if (t <= 15) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(a, b, c, d, e, me2, 15); \
  if (t <= 16) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(e, a, b, c, d, me2, 16); \
  if (t <= 17) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(d, e, a, b, c, me2, 17); \
  if (t <= 18) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(c, d, e, a, b, me2, 18); \
  if (t <= 19) HASHCLASH_SHA1COMPRESS_ROUND1_STEP(b, c, d, e, a, me2, 19); \
  if (t <= 20) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, me2, 20); \
  if (t <= 21) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, me2, 21); \
  if (t <= 22) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, me2, 22); \
  if (t <= 23) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, me2, 23); \
  if (t <= 24) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, me2, 24); \
  if (t <= 25) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, me2, 25); \
  if (t <= 26) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, me2, 26); \
  if (t <= 27) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, me2, 27); \
  if (t <= 28) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, me2, 28); \
  if (t <= 29) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, me2, 29); \
  if (t <= 30) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, me2, 30); \
  if (t <= 31) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, me2, 31); \
  if (t <= 32) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, me2, 32); \
  if (t <= 33) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, me2, 33); \
  if (t <= 34) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, me2, 34); \
  if (t <= 35) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(a, b, c, d, e, me2, 35); \
  if (t <= 36) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(e, a, b, c, d, me2, 36); \
  if (t <= 37) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(d, e, a, b, c, me2, 37); \
  if (t <= 38) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(c, d, e, a, b, me2, 38); \
  if (t <= 39) HASHCLASH_SHA1COMPRESS_ROUND2_STEP(b, c, d, e, a, me2, 39); \
  if (t <= 40) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, me2, 40); \
  if (t <= 41) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, me2, 41); \
  if (t <= 42) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, me2, 42); \
  if (t <= 43) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, me2, 43); \
  if (t <= 44) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, me2, 44); \
  if (t <= 45) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, me2, 45); \
  if (t <= 46) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, me2, 46); \
  if (t <= 47) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, me2, 47); \
  if (t <= 48) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, me2, 48); \
  if (t <= 49) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, me2, 49); \
  if (t <= 50) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, me2, 50); \
  if (t <= 51) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, me2, 51); \
  if (t <= 52) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, me2, 52); \
  if (t <= 53) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, me2, 53); \
  if (t <= 54) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, me2, 54); \
  if (t <= 55) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(a, b, c, d, e, me2, 55); \
  if (t <= 56) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(e, a, b, c, d, me2, 56); \
  if (t <= 57) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(d, e, a, b, c, me2, 57); \
  if (t <= 58) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(c, d, e, a, b, me2, 58); \
  if (t <= 59) HASHCLASH_SHA1COMPRESS_ROUND3_STEP(b, c, d, e, a, me2, 59); \
  if (t <= 60) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, me2, 60); \
  if (t <= 61) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, me2, 61); \
  if (t <= 62) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, me2, 62); \
  if (t <= 63) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, me2, 63); \
  if (t <= 64) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, me2, 64); \
  if (t <= 65) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, me2, 65); \
  if (t <= 66) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, me2, 66); \
  if (t <= 67) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, me2, 67); \
  if (t <= 68) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, me2, 68); \
  if (t <= 69) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, me2, 69); \
  if (t <= 70) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, me2, 70); \
  if (t <= 71) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, me2, 71); \
  if (t <= 72) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, me2, 72); \
  if (t <= 73) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, me2, 73); \
  if (t <= 74) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, me2, 74); \
  if (t <= 75) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(a, b, c, d, e, me2, 75); \
  if (t <= 76) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(e, a, b, c, d, me2, 76); \
  if (t <= 77) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(d, e, a, b, c, me2, 77); \
  if (t <= 78) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(c, d, e, a, b, me2, 78); \
  if (t <= 79) HASHCLASH_SHA1COMPRESS_ROUND4_STEP(b, c, d, e, a, me2, 79); \
  ihvout[0] = ihvin[0] + a; ihvout[1] = ihvin[1] + b; ihvout[2] = ihvin[2] + c; ihvout[3] = ihvin[3] + d; ihvout[4] = ihvin[4] + e; \
}

SHA1_RECOMPRESS(0)
SHA1_RECOMPRESS(1)
SHA1_RECOMPRESS(2)
SHA1_RECOMPRESS(3)
SHA1_RECOMPRESS(4)
SHA1_RECOMPRESS(5)
SHA1_RECOMPRESS(6)
SHA1_RECOMPRESS(7)
SHA1_RECOMPRESS(8)
SHA1_RECOMPRESS(9)

SHA1_RECOMPRESS(10)
SHA1_RECOMPRESS(11)
SHA1_RECOMPRESS(12)
SHA1_RECOMPRESS(13)
SHA1_RECOMPRESS(14)
SHA1_RECOMPRESS(15)
SHA1_RECOMPRESS(16)
SHA1_RECOMPRESS(17)
SHA1_RECOMPRESS(18)
SHA1_RECOMPRESS(19)

SHA1_RECOMPRESS(20)
SHA1_RECOMPRESS(21)
SHA1_RECOMPRESS(22)
SHA1_RECOMPRESS(23)
SHA1_RECOMPRESS(24)
SHA1_RECOMPRESS(25)
SHA1_RECOMPRESS(26)
SHA1_RECOMPRESS(27)
SHA1_RECOMPRESS(28)
SHA1_RECOMPRESS(29)

SHA1_RECOMPRESS(30)
SHA1_RECOMPRESS(31)
SHA1_RECOMPRESS(32)
SHA1_RECOMPRESS(33)
SHA1_RECOMPRESS(34)
SHA1_RECOMPRESS(35)
SHA1_RECOMPRESS(36)
SHA1_RECOMPRESS(37)
SHA1_RECOMPRESS(38)
SHA1_RECOMPRESS(39)

SHA1_RECOMPRESS(40)
SHA1_RECOMPRESS(41)
SHA1_RECOMPRESS(42)
SHA1_RECOMPRESS(43)
SHA1_RECOMPRESS(44)
SHA1_RECOMPRESS(45)
SHA1_RECOMPRESS(46)
SHA1_RECOMPRESS(47)
SHA1_RECOMPRESS(48)
SHA1_RECOMPRESS(49)

SHA1_RECOMPRESS(50)
SHA1_RECOMPRESS(51)
SHA1_RECOMPRESS(52)
SHA1_RECOMPRESS(53)
SHA1_RECOMPRESS(54)
SHA1_RECOMPRESS(55)
SHA1_RECOMPRESS(56)
SHA1_RECOMPRESS(57)
SHA1_RECOMPRESS(58)
SHA1_RECOMPRESS(59)

SHA1_RECOMPRESS(60)
SHA1_RECOMPRESS(61)
SHA1_RECOMPRESS(62)
SHA1_RECOMPRESS(63)
SHA1_RECOMPRESS(64)
SHA1_RECOMPRESS(65)
SHA1_RECOMPRESS(66)
SHA1_RECOMPRESS(67)
SHA1_RECOMPRESS(68)
SHA1_RECOMPRESS(69)

SHA1_RECOMPRESS(70)
SHA1_RECOMPRESS(71)
SHA1_RECOMPRESS(72)
SHA1_RECOMPRESS(73)
SHA1_RECOMPRESS(74)
SHA1_RECOMPRESS(75)
SHA1_RECOMPRESS(76)
SHA1_RECOMPRESS(77)
SHA1_RECOMPRESS(78)
SHA1_RECOMPRESS(79)

sha1_recompression_type sha1_recompression_step[80] =
{
  sha1recompress_fast_0, sha1recompress_fast_1, sha1recompress_fast_2, sha1recompress_fast_3, sha1recompress_fast_4, sha1recompress_fast_5, sha1recompress_fast_6, sha1recompress_fast_7, sha1recompress_fast_8, sha1recompress_fast_9,
  sha1recompress_fast_10, sha1recompress_fast_11, sha1recompress_fast_12, sha1recompress_fast_13, sha1recompress_fast_14, sha1recompress_fast_15, sha1recompress_fast_16, sha1recompress_fast_17, sha1recompress_fast_18, sha1recompress_fast_19,
  sha1recompress_fast_20, sha1recompress_fast_21, sha1recompress_fast_22, sha1recompress_fast_23, sha1recompress_fast_24, sha1recompress_fast_25, sha1recompress_fast_26, sha1recompress_fast_27, sha1recompress_fast_28, sha1recompress_fast_29,
  sha1recompress_fast_30, sha1recompress_fast_31, sha1recompress_fast_32, sha1recompress_fast_33, sha1recompress_fast_34, sha1recompress_fast_35, sha1recompress_fast_36, sha1recompress_fast_37, sha1recompress_fast_38, sha1recompress_fast_39,
  sha1recompress_fast_40, sha1recompress_fast_41, sha1recompress_fast_42, sha1recompress_fast_43, sha1recompress_fast_44, sha1recompress_fast_45, sha1recompress_fast_46, sha1recompress_fast_47, sha1recompress_fast_48, sha1recompress_fast_49,
  sha1recompress_fast_50, sha1recompress_fast_51, sha1recompress_fast_52, sha1recompress_fast_53, sha1recompress_fast_54, sha1recompress_fast_55, sha1recompress_fast_56, sha1recompress_fast_57, sha1recompress_fast_58, sha1recompress_fast_59,
  sha1recompress_fast_60, sha1recompress_fast_61, sha1recompress_fast_62, sha1recompress_fast_63, sha1recompress_fast_64, sha1recompress_fast_65, sha1recompress_fast_66, sha1recompress_fast_67, sha1recompress_fast_68, sha1recompress_fast_69,
  sha1recompress_fast_70, sha1recompress_fast_71, sha1recompress_fast_72, sha1recompress_fast_73, sha1recompress_fast_74, sha1recompress_fast_75, sha1recompress_fast_76, sha1recompress_fast_77, sha1recompress_fast_78, sha1recompress_fast_79,
};





void sha1_process(SHA1_CTX* ctx, const uint32_t block[16])
{
  unsigned i, j;
  uint32_t ubc_dv_mask[DVMASKSIZE];
  uint32_t ihvtmp[5];
  for (i=0; i < DVMASKSIZE; ++i)
    ubc_dv_mask[i]=0;
  ctx->ihv1[0] = ctx->ihv[0];
  ctx->ihv1[1] = ctx->ihv[1];
  ctx->ihv1[2] = ctx->ihv[2];
  ctx->ihv1[3] = ctx->ihv[3];
  ctx->ihv1[4] = ctx->ihv[4];
  memcpy(ctx->m1, block, 64);
  sha1_message_expansion(ctx->m1);
  if (ctx->detect_coll && ctx->ubc_check)
  {
    ubc_check(ctx->m1, ubc_dv_mask);
  }
  sha1_compression_states(ctx->ihv, ctx->m1, ctx->states);
  if (ctx->detect_coll)
  {
    for (i = 0; sha1_dvs[i].dvType != 0; ++i)
    {
      if ((0 == ctx->ubc_check) || (((uint32_t)(1) << sha1_dvs[i].maskb) & ubc_dv_mask[sha1_dvs[i].maski]))
      {
        for (j = 0; j < 80; ++j)
          ctx->m2[j] = ctx->m1[j] ^ sha1_dvs[i].dm[j];
        (sha1_recompression_step[sha1_dvs[i].testt])(ctx->ihv2, ihvtmp, ctx->m2, ctx->states[sha1_dvs[i].testt]);
        /* to verify SHA-1 collision detection code with collisions for reduced-step SHA-1 */
        if ((ihvtmp[0] == ctx->ihv[0] && ihvtmp[1] == ctx->ihv[1] && ihvtmp[2] == ctx->ihv[2] && ihvtmp[3] == ctx->ihv[3] && ihvtmp[4] == ctx->ihv[4])
          || (ctx->reduced_round_coll && ctx->ihv1[0] == ctx->ihv2[0] && ctx->ihv1[1] == ctx->ihv2[1] && ctx->ihv1[2] == ctx->ihv2[2] && ctx->ihv1[3] == ctx->ihv2[3] && ctx->ihv1[4] == ctx->ihv2[4]))
        {
          ctx->found_collision = 1;
          /* TODO: call callback */
          if (ctx->callback != NULL)
            ctx->callback(ctx->total - 64, ctx->ihv1, ctx->ihv2, ctx->m1, ctx->m2);

          if (ctx->safe_hash)
          {
            sha1_compression_W(ctx->ihv, ctx->m1);
            sha1_compression_W(ctx->ihv, ctx->m1);
          }

          break;
        }
      }
    }
  }
}





void swap_bytes(uint32_t val[16])
{
  unsigned i;
  for (i = 0; i < 16; ++i)
  {
    val[i] = ((val[i] << 8) & 0xFF00FF00) | ((val[i] >> 8) & 0xFF00FF);
    val[i] = (val[i] << 16) | (val[i] >> 16);
  }
}

void SHA1DCInit(SHA1_CTX* ctx)
{
  static const union { unsigned char bytes[4]; uint32_t value; } endianness = { { 0, 1, 2, 3 } };
  static const uint32_t littleendian = 0x03020100;
  ctx->total = 0;
  ctx->ihv[0] = 0x67452301;
  ctx->ihv[1] = 0xEFCDAB89;
  ctx->ihv[2] = 0x98BADCFE;
  ctx->ihv[3] = 0x10325476;
  ctx->ihv[4] = 0xC3D2E1F0;
  ctx->found_collision = 0;
  ctx->safe_hash = 1;
  ctx->ubc_check = 1;
  ctx->detect_coll = 1;
  ctx->reduced_round_coll = 0;
  ctx->bigendian = (endianness.value != littleendian);
  ctx->callback = NULL;
}

void SHA1DCSetSafeHash(SHA1_CTX* ctx, int safehash)
{
  if (safehash)
    ctx->safe_hash = 1;
  else
    ctx->safe_hash = 0;
}


void SHA1DCSetUseUBC(SHA1_CTX* ctx, int ubc_check)
{
  if (ubc_check)
    ctx->ubc_check = 1;
  else
    ctx->ubc_check = 0;
}

void SHA1DCSetUseDetectColl(SHA1_CTX* ctx, int detect_coll)
{
  if (detect_coll)
    ctx->detect_coll = 1;
  else
    ctx->detect_coll = 0;
}

void SHA1DCSetDetectReducedRoundCollision(SHA1_CTX* ctx, int reduced_round_coll)
{
  if (reduced_round_coll)
    ctx->reduced_round_coll = 1;
  else
    ctx->reduced_round_coll = 0;
}

void SHA1DCSetCallback(SHA1_CTX* ctx, collision_block_callback callback)
{
  ctx->callback = callback;
}

void SHA1DCUpdate(SHA1_CTX* ctx, const unsigned char* buf, unsigned len)
{
  unsigned left, fill;
  if (len == 0)
    return;

  left = ctx->total & 63;
  fill = 64 - left;

  if (left && len >= fill)
  {
    ctx->total += fill;
    memcpy(ctx->buffer + left, buf, fill);
    if (!ctx->bigendian)
      swap_bytes((uint32_t*)(ctx->buffer));
    sha1_process(ctx, (uint32_t*)(ctx->buffer));
    buf += fill;
    len -= fill;
    left = 0;
  }
  while (len >= 64)
  {
    ctx->total += 64;
    if (!ctx->bigendian)
    {
      memcpy(ctx->buffer, buf, 64);
      swap_bytes((uint32_t*)(ctx->buffer));
      sha1_process(ctx, (uint32_t*)(ctx->buffer));
    }
    else
      sha1_process(ctx, (uint32_t*)(buf));
    buf += 64;
    len -= 64;
  }
  if (len > 0)
  {
    ctx->total += len;
    memcpy(ctx->buffer + left, buf, len);
  }
}

static const unsigned char sha1_padding[64] =
{
  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

int SHA1DCFinal(unsigned char output[20], SHA1_CTX *ctx)
{
  uint32_t last = ctx->total & 63;
  uint32_t padn = (last < 56) ? (56 - last) : (120 - last);
  uint64_t total;
  SHA1DCUpdate(ctx, sha1_padding, padn);

  total = ctx->total - padn;
  total <<= 3;
  ctx->buffer[56] = (unsigned char)(total >> 56);
  ctx->buffer[57] = (unsigned char)(total >> 48);
  ctx->buffer[58] = (unsigned char)(total >> 40);
  ctx->buffer[59] = (unsigned char)(total >> 32);
  ctx->buffer[60] = (unsigned char)(total >> 24);
  ctx->buffer[61] = (unsigned char)(total >> 16);
  ctx->buffer[62] = (unsigned char)(total >> 8);
  ctx->buffer[63] = (unsigned char)(total);
  if (!ctx->bigendian)
    swap_bytes((uint32_t*)(ctx->buffer));
  sha1_process(ctx, (uint32_t*)(ctx->buffer));
  output[0] = (unsigned char)(ctx->ihv[0] >> 24);
  output[1] = (unsigned char)(ctx->ihv[0] >> 16);
  output[2] = (unsigned char)(ctx->ihv[0] >> 8);
  output[3] = (unsigned char)(ctx->ihv[0]);
  output[4] = (unsigned char)(ctx->ihv[1] >> 24);
  output[5] = (unsigned char)(ctx->ihv[1] >> 16);
  output[6] = (unsigned char)(ctx->ihv[1] >> 8);
  output[7] = (unsigned char)(ctx->ihv[1]);
  output[8] = (unsigned char)(ctx->ihv[2] >> 24);
  output[9] = (unsigned char)(ctx->ihv[2] >> 16);
  output[10] = (unsigned char)(ctx->ihv[2] >> 8);
  output[11] = (unsigned char)(ctx->ihv[2]);
  output[12] = (unsigned char)(ctx->ihv[3] >> 24);
  output[13] = (unsigned char)(ctx->ihv[3] >> 16);
  output[14] = (unsigned char)(ctx->ihv[3] >> 8);
  output[15] = (unsigned char)(ctx->ihv[3]);
  output[16] = (unsigned char)(ctx->ihv[4] >> 24);
  output[17] = (unsigned char)(ctx->ihv[4] >> 16);
  output[18] = (unsigned char)(ctx->ihv[4] >> 8);
  output[19] = (unsigned char)(ctx->ihv[4]);
  return ctx->found_collision;
}
#endif /* FOSSIL_HARDENED_SHA1 */
Added src/sha3.c.






































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2017 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains an implementation of SHA3 (Keccak) hashing.
*/
#include "config.h"
#include "sha3.h"

/*
** Macros to determine whether the machine is big or little endian,
** and whether or not that determination is run-time or compile-time.
**
** For best performance, an attempt is made to guess at the byte-order
** using C-preprocessor macros.  If that is unsuccessful, or if
** -DSHA3_BYTEORDER=0 is set, then byte-order is determined
** at run-time.
*/
#ifndef SHA3_BYTEORDER
# if defined(i386)     || defined(__i386__)   || defined(_M_IX86) ||    \
     defined(__x86_64) || defined(__x86_64__) || defined(_M_X64)  ||    \
     defined(_M_AMD64) || defined(_M_ARM)     || defined(__x86)   ||    \
     defined(__arm__)
#   define SHA3_BYTEORDER    1234
# elif defined(sparc)    || defined(__ppc__)
#   define SHA3_BYTEORDER    4321
# else
#   define SHA3_BYTEORDER 0
# endif
#endif


/*
** State structure for a SHA3 hash in progress
*/
typedef struct SHA3Context SHA3Context;
struct SHA3Context {
  union {
    u64 s[25];                /* Keccak state. 5x5 lines of 64 bits each */
    unsigned char x[1600];    /* ... or 1600 bytes */
  } u;
  unsigned nRate;        /* Bytes of input accepted per Keccak iteration */
  unsigned nLoaded;      /* Input bytes loaded into u.x[] so far this cycle */
  unsigned ixMask;       /* Insert next input into u.x[nLoaded^ixMask]. */
};

/*
** A single step of the Keccak mixing function for a 1600-bit state
*/
static void KeccakF1600Step(SHA3Context *p){
  int i;
  u64 B0, B1, B2, B3, B4;
  u64 C0, C1, C2, C3, C4;
  u64 D0, D1, D2, D3, D4;
  static const u64 RC[] = {
    0x0000000000000001ULL,  0x0000000000008082ULL,
    0x800000000000808aULL,  0x8000000080008000ULL,
    0x000000000000808bULL,  0x0000000080000001ULL,
    0x8000000080008081ULL,  0x8000000000008009ULL,
    0x000000000000008aULL,  0x0000000000000088ULL,
    0x0000000080008009ULL,  0x000000008000000aULL,
    0x000000008000808bULL,  0x800000000000008bULL,
    0x8000000000008089ULL,  0x8000000000008003ULL,
    0x8000000000008002ULL,  0x8000000000000080ULL,
    0x000000000000800aULL,  0x800000008000000aULL,
    0x8000000080008081ULL,  0x8000000000008080ULL,
    0x0000000080000001ULL,  0x8000000080008008ULL
  };
# define A00 (p->u.s[0])
# define A01 (p->u.s[1])
# define A02 (p->u.s[2])
# define A03 (p->u.s[3])
# define A04 (p->u.s[4])
# define A10 (p->u.s[5])
# define A11 (p->u.s[6])
# define A12 (p->u.s[7])
# define A13 (p->u.s[8])
# define A14 (p->u.s[9])
# define A20 (p->u.s[10])
# define A21 (p->u.s[11])
# define A22 (p->u.s[12])
# define A23 (p->u.s[13])
# define A24 (p->u.s[14])
# define A30 (p->u.s[15])
# define A31 (p->u.s[16])
# define A32 (p->u.s[17])
# define A33 (p->u.s[18])
# define A34 (p->u.s[19])
# define A40 (p->u.s[20])
# define A41 (p->u.s[21])
# define A42 (p->u.s[22])
# define A43 (p->u.s[23])
# define A44 (p->u.s[24])
# define ROL64(a,x) ((a<<x)|(a>>(64-x)))

  for(i=0; i<24; i+=4){
    C0 = A00^A10^A20^A30^A40;
    C1 = A01^A11^A21^A31^A41;
    C2 = A02^A12^A22^A32^A42;
    C3 = A03^A13^A23^A33^A43;
    C4 = A04^A14^A24^A34^A44;
    D0 = C4^ROL64(C1, 1);
    D1 = C0^ROL64(C2, 1);
    D2 = C1^ROL64(C3, 1);
    D3 = C2^ROL64(C4, 1);
    D4 = C3^ROL64(C0, 1);

    B0 = (A00^D0);
    B1 = ROL64((A11^D1), 44);
    B2 = ROL64((A22^D2), 43);
    B3 = ROL64((A33^D3), 21);
    B4 = ROL64((A44^D4), 14);
    A00 =   B0 ^((~B1)&  B2 );
    A00 ^= RC[i];
    A11 =   B1 ^((~B2)&  B3 );
    A22 =   B2 ^((~B3)&  B4 );
    A33 =   B3 ^((~B4)&  B0 );
    A44 =   B4 ^((~B0)&  B1 );

    B2 = ROL64((A20^D0), 3);
    B3 = ROL64((A31^D1), 45);
    B4 = ROL64((A42^D2), 61);
    B0 = ROL64((A03^D3), 28);
    B1 = ROL64((A14^D4), 20);
    A20 =   B0 ^((~B1)&  B2 );
    A31 =   B1 ^((~B2)&  B3 );
    A42 =   B2 ^((~B3)&  B4 );
    A03 =   B3 ^((~B4)&  B0 );
    A14 =   B4 ^((~B0)&  B1 );

    B4 = ROL64((A40^D0), 18);
    B0 = ROL64((A01^D1), 1);
    B1 = ROL64((A12^D2), 6);
    B2 = ROL64((A23^D3), 25);
    B3 = ROL64((A34^D4), 8);
    A40 =   B0 ^((~B1)&  B2 );
    A01 =   B1 ^((~B2)&  B3 );
    A12 =   B2 ^((~B3)&  B4 );
    A23 =   B3 ^((~B4)&  B0 );
    A34 =   B4 ^((~B0)&  B1 );

    B1 = ROL64((A10^D0), 36);
    B2 = ROL64((A21^D1), 10);
    B3 = ROL64((A32^D2), 15);
    B4 = ROL64((A43^D3), 56);
    B0 = ROL64((A04^D4), 27);
    A10 =   B0 ^((~B1)&  B2 );
    A21 =   B1 ^((~B2)&  B3 );
    A32 =   B2 ^((~B3)&  B4 );
    A43 =   B3 ^((~B4)&  B0 );
    A04 =   B4 ^((~B0)&  B1 );

    B3 = ROL64((A30^D0), 41);
    B4 = ROL64((A41^D1), 2);
    B0 = ROL64((A02^D2), 62);
    B1 = ROL64((A13^D3), 55);
    B2 = ROL64((A24^D4), 39);
    A30 =   B0 ^((~B1)&  B2 );
    A41 =   B1 ^((~B2)&  B3 );
    A02 =   B2 ^((~B3)&  B4 );
    A13 =   B3 ^((~B4)&  B0 );
    A24 =   B4 ^((~B0)&  B1 );

    C0 = A00^A20^A40^A10^A30;
    C1 = A11^A31^A01^A21^A41;
    C2 = A22^A42^A12^A32^A02;
    C3 = A33^A03^A23^A43^A13;
    C4 = A44^A14^A34^A04^A24;
    D0 = C4^ROL64(C1, 1);
    D1 = C0^ROL64(C2, 1);
    D2 = C1^ROL64(C3, 1);
    D3 = C2^ROL64(C4, 1);
    D4 = C3^ROL64(C0, 1);

    B0 = (A00^D0);
    B1 = ROL64((A31^D1), 44);
    B2 = ROL64((A12^D2), 43);
    B3 = ROL64((A43^D3), 21);
    B4 = ROL64((A24^D4), 14);
    A00 =   B0 ^((~B1)&  B2 );
    A00 ^= RC[i+1];
    A31 =   B1 ^((~B2)&  B3 );
    A12 =   B2 ^((~B3)&  B4 );
    A43 =   B3 ^((~B4)&  B0 );
    A24 =   B4 ^((~B0)&  B1 );

    B2 = ROL64((A40^D0), 3);
    B3 = ROL64((A21^D1), 45);
    B4 = ROL64((A02^D2), 61);
    B0 = ROL64((A33^D3), 28);
    B1 = ROL64((A14^D4), 20);
    A40 =   B0 ^((~B1)&  B2 );
    A21 =   B1 ^((~B2)&  B3 );
    A02 =   B2 ^((~B3)&  B4 );
    A33 =   B3 ^((~B4)&  B0 );
    A14 =   B4 ^((~B0)&  B1 );

    B4 = ROL64((A30^D0), 18);
    B0 = ROL64((A11^D1), 1);
    B1 = ROL64((A42^D2), 6);
    B2 = ROL64((A23^D3), 25);
    B3 = ROL64((A04^D4), 8);
    A30 =   B0 ^((~B1)&  B2 );
    A11 =   B1 ^((~B2)&  B3 );
    A42 =   B2 ^((~B3)&  B4 );
    A23 =   B3 ^((~B4)&  B0 );
    A04 =   B4 ^((~B0)&  B1 );

    B1 = ROL64((A20^D0), 36);
    B2 = ROL64((A01^D1), 10);
    B3 = ROL64((A32^D2), 15);
    B4 = ROL64((A13^D3), 56);
    B0 = ROL64((A44^D4), 27);
    A20 =   B0 ^((~B1)&  B2 );
    A01 =   B1 ^((~B2)&  B3 );
    A32 =   B2 ^((~B3)&  B4 );
    A13 =   B3 ^((~B4)&  B0 );
    A44 =   B4 ^((~B0)&  B1 );

    B3 = ROL64((A10^D0), 41);
    B4 = ROL64((A41^D1), 2);
    B0 = ROL64((A22^D2), 62);
    B1 = ROL64((A03^D3), 55);
    B2 = ROL64((A34^D4), 39);
    A10 =   B0 ^((~B1)&  B2 );
    A41 =   B1 ^((~B2)&  B3 );
    A22 =   B2 ^((~B3)&  B4 );
    A03 =   B3 ^((~B4)&  B0 );
    A34 =   B4 ^((~B0)&  B1 );

    C0 = A00^A40^A30^A20^A10;
    C1 = A31^A21^A11^A01^A41;
    C2 = A12^A02^A42^A32^A22;
    C3 = A43^A33^A23^A13^A03;
    C4 = A24^A14^A04^A44^A34;
    D0 = C4^ROL64(C1, 1);
    D1 = C0^ROL64(C2, 1);
    D2 = C1^ROL64(C3, 1);
    D3 = C2^ROL64(C4, 1);
    D4 = C3^ROL64(C0, 1);

    B0 = (A00^D0);
    B1 = ROL64((A21^D1), 44);
    B2 = ROL64((A42^D2), 43);
    B3 = ROL64((A13^D3), 21);
    B4 = ROL64((A34^D4), 14);
    A00 =   B0 ^((~B1)&  B2 );
    A00 ^= RC[i+2];
    A21 =   B1 ^((~B2)&  B3 );
    A42 =   B2 ^((~B3)&  B4 );
    A13 =   B3 ^((~B4)&  B0 );
    A34 =   B4 ^((~B0)&  B1 );

    B2 = ROL64((A30^D0), 3);
    B3 = ROL64((A01^D1), 45);
    B4 = ROL64((A22^D2), 61);
    B0 = ROL64((A43^D3), 28);
    B1 = ROL64((A14^D4), 20);
    A30 =   B0 ^((~B1)&  B2 );
    A01 =   B1 ^((~B2)&  B3 );
    A22 =   B2 ^((~B3)&  B4 );
    A43 =   B3 ^((~B4)&  B0 );
    A14 =   B4 ^((~B0)&  B1 );

    B4 = ROL64((A10^D0), 18);
    B0 = ROL64((A31^D1), 1);
    B1 = ROL64((A02^D2), 6);
    B2 = ROL64((A23^D3), 25);
    B3 = ROL64((A44^D4), 8);
    A10 =   B0 ^((~B1)&  B2 );
    A31 =   B1 ^((~B2)&  B3 );
    A02 =   B2 ^((~B3)&  B4 );
    A23 =   B3 ^((~B4)&  B0 );
    A44 =   B4 ^((~B0)&  B1 );

    B1 = ROL64((A40^D0), 36);
    B2 = ROL64((A11^D1), 10);
    B3 = ROL64((A32^D2), 15);
    B4 = ROL64((A03^D3), 56);
    B0 = ROL64((A24^D4), 27);
    A40 =   B0 ^((~B1)&  B2 );
    A11 =   B1 ^((~B2)&  B3 );
    A32 =   B2 ^((~B3)&  B4 );
    A03 =   B3 ^((~B4)&  B0 );
    A24 =   B4 ^((~B0)&  B1 );

    B3 = ROL64((A20^D0), 41);
    B4 = ROL64((A41^D1), 2);
    B0 = ROL64((A12^D2), 62);
    B1 = ROL64((A33^D3), 55);
    B2 = ROL64((A04^D4), 39);
    A20 =   B0 ^((~B1)&  B2 );
    A41 =   B1 ^((~B2)&  B3 );
    A12 =   B2 ^((~B3)&  B4 );
    A33 =   B3 ^((~B4)&  B0 );
    A04 =   B4 ^((~B0)&  B1 );

    C0 = A00^A30^A10^A40^A20;
    C1 = A21^A01^A31^A11^A41;
    C2 = A42^A22^A02^A32^A12;
    C3 = A13^A43^A23^A03^A33;
    C4 = A34^A14^A44^A24^A04;
    D0 = C4^ROL64(C1, 1);
    D1 = C0^ROL64(C2, 1);
    D2 = C1^ROL64(C3, 1);
    D3 = C2^ROL64(C4, 1);
    D4 = C3^ROL64(C0, 1);

    B0 = (A00^D0);
    B1 = ROL64((A01^D1), 44);
    B2 = ROL64((A02^D2), 43);
    B3 = ROL64((A03^D3), 21);
    B4 = ROL64((A04^D4), 14);
    A00 =   B0 ^((~B1)&  B2 );
    A00 ^= RC[i+3];
    A01 =   B1 ^((~B2)&  B3 );
    A02 =   B2 ^((~B3)&  B4 );
    A03 =   B3 ^((~B4)&  B0 );
    A04 =   B4 ^((~B0)&  B1 );

    B2 = ROL64((A10^D0), 3);
    B3 = ROL64((A11^D1), 45);
    B4 = ROL64((A12^D2), 61);
    B0 = ROL64((A13^D3), 28);
    B1 = ROL64((A14^D4), 20);
    A10 =   B0 ^((~B1)&  B2 );
    A11 =   B1 ^((~B2)&  B3 );
    A12 =   B2 ^((~B3)&  B4 );
    A13 =   B3 ^((~B4)&  B0 );
    A14 =   B4 ^((~B0)&  B1 );

    B4 = ROL64((A20^D0), 18);
    B0 = ROL64((A21^D1), 1);
    B1 = ROL64((A22^D2), 6);
    B2 = ROL64((A23^D3), 25);
    B3 = ROL64((A24^D4), 8);
    A20 =   B0 ^((~B1)&  B2 );
    A21 =   B1 ^((~B2)&  B3 );
    A22 =   B2 ^((~B3)&  B4 );
    A23 =   B3 ^((~B4)&  B0 );
    A24 =   B4 ^((~B0)&  B1 );

    B1 = ROL64((A30^D0), 36);
    B2 = ROL64((A31^D1), 10);
    B3 = ROL64((A32^D2), 15);
    B4 = ROL64((A33^D3), 56);
    B0 = ROL64((A34^D4), 27);
    A30 =   B0 ^((~B1)&  B2 );
    A31 =   B1 ^((~B2)&  B3 );
    A32 =   B2 ^((~B3)&  B4 );
    A33 =   B3 ^((~B4)&  B0 );
    A34 =   B4 ^((~B0)&  B1 );

    B3 = ROL64((A40^D0), 41);
    B4 = ROL64((A41^D1), 2);
    B0 = ROL64((A42^D2), 62);
    B1 = ROL64((A43^D3), 55);
    B2 = ROL64((A44^D4), 39);
    A40 =   B0 ^((~B1)&  B2 );
    A41 =   B1 ^((~B2)&  B3 );
    A42 =   B2 ^((~B3)&  B4 );
    A43 =   B3 ^((~B4)&  B0 );
    A44 =   B4 ^((~B0)&  B1 );
  }
}

/*
** Initialize a new hash.  iSize determines the size of the hash
** in bits and should be one of 224, 256, 384, or 512.  Or iSize
** can be zero to use the default hash size of 256 bits.
*/
static void SHA3Init(SHA3Context *p, int iSize){
  memset(p, 0, sizeof(*p));
  if( iSize>=128 && iSize<=512 ){
    p->nRate = (1600 - ((iSize + 31)&~31)*2)/8;
  }else{
    p->nRate = (1600 - 2*256)/8;
  }
#if SHA3_BYTEORDER==1234
  /* Known to be little-endian at compile-time. No-op */
#elif SHA3_BYTEORDER==4321
  p->ixMask = 7;  /* Big-endian */
#else
  {
    static unsigned int one = 1;
    if( 1==*(unsigned char*)&one ){
      /* Little endian.  No byte swapping. */
      p->ixMask = 0;
    }else{
      /* Big endian.  Byte swap. */
      p->ixMask = 7;
    }
  }
#endif
}

/*
** Make consecutive calls to the SHA3Update function to add new content
** to the hash
*/
static void SHA3Update(
  SHA3Context *p,
  const unsigned char *aData,
  unsigned int nData
){
  unsigned int i = 0;
#if SHA3_BYTEORDER==1234
  if( (p->nLoaded % 8)==0 && (((intptr_t)aData)&7)==0 ){
    for(; i+7<nData; i+=8){
      p->u.s[p->nLoaded/8] ^= *(u64*)&aData[i];
      p->nLoaded += 8;
      if( p->nLoaded>=p->nRate ){
        KeccakF1600Step(p);
        p->nLoaded = 0;
      }
    }
  }
#endif
  for(; i<nData; i++){
#if SHA3_BYTEORDER==1234
    p->u.x[p->nLoaded] ^= aData[i];
#elif SHA3_BYTEORDER==4321
    p->u.x[p->nLoaded^0x07] ^= aData[i];
#else
    p->u.x[p->nLoaded^p->ixMask] ^= aData[i];
#endif
    p->nLoaded++;
    if( p->nLoaded==p->nRate ){
      KeccakF1600Step(p);
      p->nLoaded = 0;
    }
  }
}

/*
** After all content has been added, invoke SHA3Final() to compute
** the final hash.  The function returns a pointer to the binary
** hash value.
*/
static unsigned char *SHA3Final(SHA3Context *p){
  unsigned int i;
  if( p->nLoaded==p->nRate-1 ){
    const unsigned char c1 = 0x86;
    SHA3Update(p, &c1, 1);
  }else{
    const unsigned char c2 = 0x06;
    const unsigned char c3 = 0x80;
    SHA3Update(p, &c2, 1);
    p->nLoaded = p->nRate - 1;
    SHA3Update(p, &c3, 1);
  }
  for(i=0; i<p->nRate; i++){
    p->u.x[i+p->nRate] = p->u.x[i^p->ixMask];
  }
  return &p->u.x[p->nRate];
}

/*
** Convert a digest into base-16.  digest should be declared as
** "unsigned char digest[20]" in the calling function.  The SHA3
** digest is stored in the first 20 bytes.  zBuf should
** be "char zBuf[41]".
*/
static void DigestToBase16(unsigned char *digest, char *zBuf, int nByte){
  static const char zEncode[] = "0123456789abcdef";
  int ix;

  for(ix=0; ix<nByte; ix++){
    *zBuf++ = zEncode[(*digest>>4)&0xf];
    *zBuf++ = zEncode[*digest++ & 0xf];
  }
  *zBuf = '\0';
}

/*
** The state of an incremental SHA3 checksum computation.  Only one
** such computation can be underway at a time, of course.
*/
static SHA3Context incrCtx;
static int incrInit = 0;

/*
** Initialize a new global SHA3 hash.
*/
void sha3sum_init(int iSize){
  assert( incrInit==0 );
  incrInit = iSize;
  SHA3Init(&incrCtx, incrInit);
}

/*
** Add more text to the incremental SHA3 checksum.
*/
void sha3sum_step_text(const char *zText, int nBytes){
  assert( incrInit );
  if( nBytes<=0 ){
    if( nBytes==0 ) return;
    nBytes = strlen(zText);
  }
  SHA3Update(&incrCtx, (unsigned char*)zText, nBytes);
}

/*
** Add the content of a blob to the incremental SHA3 checksum.
*/
void sha3sum_step_blob(Blob *p){
  assert( incrInit );
  SHA3Update(&incrCtx, (unsigned char*)blob_buffer(p), blob_size(p));
}

/*
** Finish the incremental SHA3 checksum.  Store the result in blob pOut
** if pOut!=0.  Also return a pointer to the result.
**
** This resets the incremental checksum preparing for the next round
** of computation.  The return pointer points to a static buffer that
** is overwritten by subsequent calls to this function.
*/
char *sha3sum_finish(Blob *pOut){
  static char zOut[132];
  DigestToBase16(SHA3Final(&incrCtx), zOut, incrInit/8);
  if( pOut ){
    blob_zero(pOut);
    blob_append(pOut, zOut, incrInit/4);
  }
  incrInit = 0;
  return zOut;
}


/*
** Compute the SHA3 checksum of a file on disk.  Store the resulting
** checksum in the blob pCksum.  pCksum is assumed to be initialized.
**
** Return the number of errors.
*/
int sha3sum_file(const char *zFilename, int eFType, int iSize, Blob *pCksum){
  FILE *in;
  SHA3Context ctx;
  char zBuf[10240];

  if( eFType==RepoFILE && file_islink(zFilename) ){
    /* Instead of file content, return sha3 of link destination path */
    Blob destinationPath;
    int rc;

    blob_read_link(&destinationPath, zFilename);
    rc = sha3sum_blob(&destinationPath, iSize, pCksum);
    blob_reset(&destinationPath);
    return rc;
  }

  in = fossil_fopen(zFilename,"rb");
  if( in==0 ){
    return 1;
  }
  SHA3Init(&ctx, iSize);
  for(;;){
    int n;
    n = fread(zBuf, 1, sizeof(zBuf), in);
    if( n<=0 ) break;
    SHA3Update(&ctx, (unsigned char*)zBuf, (unsigned)n);
  }
  fclose(in);
  blob_zero(pCksum);
  blob_resize(pCksum, iSize/4);
  DigestToBase16(SHA3Final(&ctx), blob_buffer(pCksum), iSize/8);
  return 0;
}

/*
** Compute the SHA3 checksum of a blob in memory.  Store the resulting
** checksum in the blob pCksum.  pCksum is assumed to be either
** uninitialized or the same blob as pIn.
**
** Return the number of errors.
*/
int sha3sum_blob(const Blob *pIn, int iSize, Blob *pCksum){
  SHA3Context ctx;
  SHA3Init(&ctx, iSize);
  SHA3Update(&ctx, (unsigned char*)blob_buffer(pIn), blob_size(pIn));
  if( pIn==pCksum ){
    blob_reset(pCksum);
  }else{
    blob_zero(pCksum);
  }
  blob_resize(pCksum, iSize/4);
  DigestToBase16(SHA3Final(&ctx), blob_buffer(pCksum), iSize/8);
  return 0;
}

#if 0 /* NOT USED */
/*
** Compute the SHA3 checksum of a zero-terminated string.  The
** result is held in memory obtained from mprintf().
*/
char *sha3sum(const char *zIn, int iSize){
  SHA3Context ctx;
  char zDigest[132];

  SHA3Init(&ctx, iSize);
  SHA3Update(&ctx, (unsigned const char*)zIn, strlen(zIn));
  DigestToBase16(SHA3Final(&ctx), zDigest, iSize/8);
  return mprintf("%s", zDigest);
}
#endif

/*
** COMMAND: sha3sum*
**
** Usage: %fossil sha3sum FILE...
**
** Compute an SHA3 checksum of all files named on the command-line.
** If a file is named "-" then take its content from standard input.
**
** To be clear:  The official NIST FIPS-202 implementation of SHA3
** with the added 01 padding is used, not the original Keccak submission.
**
** Options:
**    --224               Compute a SHA3-224 hash
**    --256               Compute a SHA3-256 hash (the default)
**    --384               Compute a SHA3-384 hash
**    --512               Compute a SHA3-512 hash
**    --size N            An N-bit hash.  N must be a multiple of 32 between
**                        128 and 512.
**    -h|--dereference    If FILE is a symbolic link, compute the hash on
**                        the object pointed to, not on the link itself.
**
** See also: [[md5sum]], [[sha1sum]]
*/
void sha3sum_test(void){
  int i;
  Blob in;
  Blob cksum = empty_blob;
  int iSize = 256;
  int eFType = SymFILE;

  if( find_option("dereference","h",0) ) eFType = ExtFILE;
  if( find_option("224",0,0)!=0 ) iSize = 224;
  else if( find_option("256",0,0)!=0 ) iSize = 256;
  else if( find_option("384",0,0)!=0 ) iSize = 384;
  else if( find_option("512",0,0)!=0 ) iSize = 512;
  else{
    const char *zN = find_option("size",0,1);
    if( zN!=0 ){
      int n = atoi(zN);
      if( n%32!=0 || n<128 || n>512 ){
        fossil_fatal("--size must be a multiple of 64 between 128 and 512");
      }
      iSize = n;
    }
  }
  verify_all_options();

  for(i=2; i<g.argc; i++){
    if( g.argv[i][0]=='-' && g.argv[i][1]==0 ){
      blob_read_from_channel(&in, stdin, -1);
      sha3sum_blob(&in, iSize, &cksum);
    }else if( sha3sum_file(g.argv[i], eFType, iSize, &cksum) > 0 ){
      fossil_fatal("Cannot read file: %s", g.argv[i]);
    }
    fossil_print("%s  %s\n", blob_str(&cksum), g.argv[i]);
    blob_reset(&cksum);
  }
}
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/*
** Return true if the given artifact ID should be shunned.
*/
int uuid_is_shunned(const char *zUuid){
  static Stmt q;
  int rc;
  if( zUuid==0 || zUuid[0]==0 ) return 0;
  if( g.eHashPolicy==HPOLICY_SHUN_SHA1 && zUuid[HNAME_LEN_SHA1]==0 ) return 1;
  db_static_prepare(&q, "SELECT 1 FROM shun WHERE uuid=:uuid");
  db_bind_text(&q, ":uuid", zUuid);
  rc = db_step(&q);
  db_reset(&q);
  return rc==SQLITE_ROW;
}

/*
** WEBPAGE: shun
**
** View the hashes of all shunned artifacts.  Add new hashes
** to the shun set.  Requires Admin privilege.
*/
void shun_page(void){
  Stmt q;
  int cnt = 0;
  const char *zUuid = P("uuid");
  const char *zShun = P("shun");
  const char *zAccept = P("accept");
  const char *zRcvid = P("rcvid");
  int reviewList = P("review")!=0;
  int nUuid;
  char zCanonical[UUID_SIZE+1];
  int nRcvid = 0;
  int numRows = 3;
  char *zCanonical = 0;

  login_check_credentials();
  if( !g.okAdmin ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  if( P("rebuild") ){
    db_close();
    db_close(1);
    db_open_repository(g.zRepositoryName);
    db_begin_transaction();
    rebuild_db(0,0);
    rebuild_db(0, 0);
    admin_log("Rebuilt database.");
    db_end_transaction(0);
  }
  if( zUuid ){
    char *p;
    int i = 0;
    int j = 0;
    nUuid = strlen(zUuid);
    if( nUuid!=40 || !validate16(zUuid, nUuid) ){
      zUuid = 0;
    }else{
      memcpy(zCanonical, zUuid, UUID_SIZE+1);
      canonical16(zCanonical, UUID_SIZE);
      zUuid = zCanonical;
    }
    zCanonical = fossil_malloc(strlen(zUuid)+2);
    while( zUuid[i] ){
      if( fossil_isspace(zUuid[i]) ){
        if( j && zCanonical[j-1] ){
          zCanonical[j] = 0;
          j++;
        }
      }else{
        zCanonical[j] = zUuid[i];
        j++;
      }
      i++;
    }
    zCanonical[j+1] = zCanonical[j] = 0;
    p = zCanonical;
    while( *p ){
      int nUuid = strlen(p);
      if( !(reviewList || hname_validate(p, nUuid)) ){
        @ <p class="generalError">Error: Bad artifact IDs.</p>
        fossil_free(zCanonical);
        zCanonical = 0;
        break;
      }else{
        canonical16(p, nUuid);
        p += nUuid+1;
      }
    }
    zUuid = zCanonical;
  }
  style_header("Shunned Artifacts");
  if( zUuid && P("sub") ){
    login_verify_csrf_secret();
    db_multi_exec("DELETE FROM shun WHERE uuid='%s'", zUuid);
    if( db_exists("SELECT 1 FROM blob WHERE uuid='%s'", zUuid) ){
      @ <p><font color="blue">Artifact 
      @ <a href="%s(g.zBaseURL)/artifact/%s(zUuid)">%s(zUuid)</a> is no
      @ longer being shunned.</font></p>
  if( zUuid && P("sub") && cgi_csrf_safe(2) ){
    const char *p = zUuid;
    int allExist = 1;
    while( *p ){
      db_multi_exec("DELETE FROM shun WHERE uuid=%Q", p);
      if( !db_exists("SELECT 1 FROM blob WHERE uuid=%Q", p) ){
        allExist = 0;
      }
      admin_log("Unshunned %Q", p);
      p += strlen(p)+1;
    }
    if( allExist ){
      @ <p class="noMoreShun">Artifact(s)<br>
      for( p = zUuid ; *p ; p += strlen(p)+1 ){
        @ <a href="%R/artifact/%s(p)">%s(p)</a><br>
      }
      @ are no longer being shunned.</p>
    }else{
      @ <p class="noMoreShun">Artifact(s)<br>
      for( p = zUuid ; *p ; p += strlen(p)+1 ){
        @ %s(p)<br>
      }
      @ will no longer be shunned but they may not exist in the repository.
      @ It may be necessary to rebuild the repository
      @ before the artifact content can be pulled in
      @ from other repositories.</p>
    }
  }
  if( zUuid && P("add") && cgi_csrf_safe(2) ){
    const char *p = zUuid;
    int rid, tagid;
    while( *p ){
      db_multi_exec(
        "INSERT OR IGNORE INTO shun(uuid,mtime)"
        " VALUES(%Q, now())", p);
      db_multi_exec("DELETE FROM attachment WHERE src=%Q", p);
      rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", p);
      if( rid ){
        db_multi_exec("DELETE FROM event WHERE objid=%d", rid);
      }
      tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='tkt-%q'", p);
      if( tagid ){
        db_multi_exec("DELETE FROM ticket WHERE tkt_uuid=%Q", p);
        db_multi_exec("DELETE FROM tag WHERE tagid=%d", tagid);
        db_multi_exec("DELETE FROM tagxref WHERE tagid=%d", tagid);
      }
      admin_log("Shunned %Q", p);
      p += strlen(p)+1;
    }
    @ <p class="shunned">Artifact(s)<br>
    for( p = zUuid ; *p ; p += strlen(p)+1 ){
      @ <a href="%R/artifact/%s(p)">%s(p)</a><br>
    }
    @ have been shunned.  They will no longer be pushed.
    @ They will be removed from the repository the next time the repository
    @ is rebuilt using the <b>fossil rebuild</b> command-line</p>
  }
  if( zUuid && reviewList ){
    const char *p;
    int nTotal = 0;
    int nOk = 0;
    @ <table class="shun-review"><tbody><tr><td>
    for( p = zUuid ; *p ; p += strlen(p)+1 ){
      int rid = symbolic_name_to_rid(p, 0);
      nTotal++;
      if( rid < 0 ){
        @ Ambiguous<br>
      }else if( rid == 0 ){
        if( !hname_validate(p, strlen(p)) ){
          @ Bad artifact<br>
        }else if(db_int(0, "SELECT 1 FROM shun WHERE uuid=%Q", p)){
          @ Already shunned<br>
        }else{
          @ Unknown<br>
        }
      }else{
        char *zCmpUuid = db_text(0,
            "SELECT uuid"
            "  FROM blob, rcvfrom"
            " WHERE rid=%d"
            "   AND rcvfrom.rcvid=blob.rcvid",
            rid);
        if( fossil_strcmp(p, zCmpUuid)==0 ){
          nOk++;
          @ OK</br>
        }else{
          @ Abbreviated<br>
        }
      }
    }
    @ </td><td>
    for( p = zUuid ; *p ; p += strlen(p)+1 ){
      int rid = symbolic_name_to_rid(p, 0);
      if( rid > 0 ){
        @ <a href="%R/artifact/%s(p)">%s(p)</a><br>
      }else{
        @ %s(p)<br>
      }
    }
    @ </td></tr></tbody></table>
    @ <p class="shunned">
    if( nOk < nTotal){
      @ <b>Warning:</b> Not all artifacts
    }else if( nTotal==1 ){
      @ The artifact is present and
    }else{
      @ <p><font color="blue">Artifact %s(zUuid)</a> will no longer
      @ be shunned.  But it does not exist in the repository.  It
      @ may be necessary to rebuild the repository using the
      @ <b>fossil rebuild</b> command-line before the artifact content
      @ All %i(nOk) artifacts are present and
      @ can pulled in from other respositories.</font></p>
    }
    @ can be shunned with its hash above.</p>
  }
  if( zUuid && P("add") ){
  if( zRcvid ){
    login_verify_csrf_secret();
    db_multi_exec("INSERT OR IGNORE INTO shun VALUES('%s')", zUuid);
    nRcvid = atoi(zRcvid);
    numRows = db_int(0, "SELECT min(count(), 10) FROM blob WHERE rcvid=%d",
                     nRcvid);
    @ <p><font color="blue">Artifact
    @ <a href="%s(g.zBaseURL)/artifact/%s(zUuid)">%s(zUuid)</a> has been
    @ shunned.  It will no longer be pushed.
    @ It will be removed from the repository the next time the respository
    @ is rebuilt using the <b>fossil rebuild</b> command-line</font></p>
  }
  @ <p>A shunned artifact will not be pushed nor accepted in a pull and the
  @ artifact content will be purged from the repository the next time the
  @ repository is rebuilt.  A list of shunned artifacts can be seen at the
  @ bottom of this page.</p>
  @ 
  @
  @ <a name="addshun"></a>
  @ <p>To shun an artifact, enter its artifact ID (the 40-character SHA1
  @ hash of the artifact) in the
  @ following box and press the "Shun" button.  This will cause the artifact
  @ to be removed from the repository and will prevent the artifact from being
  @ <p>To shun artifacts, enter their artifact hashes (the 40- or
  @ 64-character lowercase hexadecimal hash of the artifact content) in the
  @ following box and press the "Shun" button.  This will cause the artifacts
  @ to be removed from the repository and will prevent the artifacts from being
  @ readded to the repository by subsequent sync operation.</p>
  @
  @ <p>Note that you must enter the full 40-character artifact ID, not
  @ an abbreviation or a symbolic tag.</p>
  @ <p>Note that you must enter full artifact hashes, not abbreviations
  @ or symbolic tags.</p>
  @
  @ <p>Warning:  Shunning should only be used to remove inappropriate content
  @ from the repository.  Inappropriate content includes such things as
  @ spam added to Wiki, files that violate copyright or patent agreements,
  @ or artifacts that by design or accident interfere with the processing
  @ of the repository.  Do not shun artifacts merely to remove them from
  @ sight - set the "hidden" tag on such artifacts instead.</p>
  @ 
  @
  @ <blockquote>
  @ <form method="POST" action="%s(g.zBaseURL)/%s(g.zPath)">
  @ <form method="post" action="%R/%s(g.zPath)"><div>
  login_insert_csrf_secret();
  @ <textarea class="fullsize-text" cols="70" rows="%d(numRows)" name="uuid">
  if( zShun ){
    if( strlen(zShun) ){
      @ %h(zShun)
    }else if( nRcvid ){
      db_prepare(&q, "SELECT uuid FROM blob WHERE rcvid=%d", nRcvid);
      while( db_step(&q)==SQLITE_ROW ){
        @ %s(db_column_text(&q, 0))
      }
      db_finalize(&q);
    }
  }else if( zUuid && reviewList ){
    const char *p;
    for( p = zUuid ; *p ; p += strlen(p)+1 ){
      @ %s(p)
    }
  }
  @ <input type="text" name="uuid" value="%h(PD("shun",""))" size="50">
  @ </textarea>
  @ <input type="submit" name="add" value="Shun">
  @ <input type="submit" name="review" value="Review">
  @ </form>
  @ </div></form>
  @ </blockquote>
  @
  @ <a name="delshun"></a>
  @ <p>Enter the UUID of a previous shunned artifact to cause it to be
  @ accepted again in the repository.  The artifact content is not
  @ <p>Enter the UUIDs of previously shunned artifacts to cause them to be
  @ accepted again in the repository.  The artifacts content is not
  @ restored because the content is unknown.  The only change is that
  @ the formerly shunned artifact will be accepted on subsequent sync
  @ the formerly shunned artifacts will be accepted on subsequent sync
  @ operations.</p>
  @
  @ <blockquote>
  @ <form method="POST" action="%s(g.zBaseURL)/%s(g.zPath)">
  @ <form method="post" action="%R/%s(g.zPath)"><div>
  login_insert_csrf_secret();
  @ <textarea class="fullsize-text" cols="70" rows="%d(numRows)" name="uuid">
  if( zAccept ){
    if( strlen(zAccept) ){
      @ %h(zAccept)
    }else if( nRcvid ){
      db_prepare(&q, "SELECT uuid FROM blob WHERE rcvid=%d", nRcvid);
      while( db_step(&q)==SQLITE_ROW ){
        @ %s(db_column_text(&q, 0))
      }
      db_finalize(&q);
    }
  }
  @ <input type="text" name="uuid" size="50">
  @ </textarea>
  @ <input type="submit" name="sub" value="Accept">
  @ </form>
  @ </div></form>
  @ </blockquote>
  @
  @ <p>Press the Rebuild button below to rebuild the respository.  The
  @ <p>Press the Rebuild button below to rebuild the repository.  The
  @ content of newly shunned artifacts is not purged until the repository
  @ is rebuilt.  On larger repositories, the rebuild may take minute or
  @ two, so be patient after pressing the button.</p>
  @
  @ <blockquote>
  @ <form method="POST" action="%s(g.zBaseURL)/%s(g.zPath)">
  @ <form method="post" action="%R/%s(g.zPath)"><div>
  login_insert_csrf_secret();
  @ <input type="submit" name="rebuild" value="Rebuild">
  @ </form>
  @ </div></form>
  @ </blockquote>
  @ 
  @
  @ <hr><p>Shunned Artifacts:</p>
  @ <blockquote>
  db_prepare(&q, 
  @ <blockquote><p>
  db_prepare(&q,
     "SELECT uuid, EXISTS(SELECT 1 FROM blob WHERE blob.uuid=shun.uuid)"
     "  FROM shun ORDER BY uuid");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 0);
    int stillExists = db_column_int(&q, 1);
    cnt++;
    if( stillExists ){
      @ <b><a href="%s(g.zBaseURL)/artifact/%s(zUuid)">%s(zUuid)</a></b><br>
      @ <b><a href="%R/artifact/%s(zUuid)">%s(zUuid)</a></b><br>
    }else{
      @ <b>%s(zUuid)</b><br>
    }
  }
  if( cnt==0 ){
    @ <i>no artifacts are shunned on this server</i>
  }
  db_finalize(&q);
  @ </blockquote>
  style_footer();
  @ </p></blockquote>
  style_finish_page();
  fossil_free(zCanonical);
}

/*
** Remove from the BLOB table all artifacts that are in the SHUN table.
*/
void shun_artifacts(void){
  Stmt q;
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+


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+


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+
+

  );
}

/*
** WEBPAGE: rcvfromlist
**
** Show a listing of RCVFROM table entries.
**
** The RCVFROM table records where this repository received each
** artifact, including the time of receipt, user, and IP address.
**
** Access requires Admin privilege.
*/
void rcvfromlist_page(void){
  int ofst = atoi(PD("ofst","0"));
  int showAll = P("all")!=0;
  int cnt;
  Stmt q;
  const int perScreen = 500;   /* RCVIDs per page */

  login_check_credentials();
  if( !g.okAdmin ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_header("Content Sources");
  style_header("Artifact Receipts");
  style_submenu_element("Log-Menu", "setup-logmenu");
  if( showAll ){
    ofst = 0;
  }else{
    style_submenu_element("All", "rcvfromlist?all=1");
  }
  if( ofst>0 ){
    style_submenu_element("Newer", "Newer", "rcvfromlist?ofst=%d",
                           ofst>30 ? ofst-30 : 0);
    style_submenu_element("Newer", "rcvfromlist?ofst=%d",
                           ofst>perScreen ? ofst-perScreen : 0);
  }
  style_submenu_element("Artifacts", "bloblist");
  style_submenu_element("Top-250", "bigbloblist");
  db_multi_exec(
    "CREATE TEMP TABLE rcvidUsed(x INTEGER PRIMARY KEY);"
    "CREATE TEMP TABLE rcvidSha1(x INTEGER PRIMARY KEY);"
    "CREATE TEMP TABLE rcvidSha3(x INTEGER PRIMARY KEY);"
    "INSERT OR IGNORE INTO rcvidUsed(x) SELECT rcvid FROM blob;"
    "INSERT OR IGNORE INTO rcvidSha1(x)"
    "   SELECT rcvid FROM blob WHERE length(uuid)==40;"
    "INSERT OR IGNORE INTO rcvidSha3(x)"
    "   SELECT rcvid FROM blob WHERE length(uuid)==64;"
  );
  if( db_table_exists("repository","unversioned") ){
    db_multi_exec(
      "INSERT OR IGNORE INTO rcvidUsed(x) SELECT rcvid FROM unversioned;"
      "INSERT OR IGNORE INTO rcvidSha1(x)"
      "   SELECT rcvid FROM unversioned WHERE length(hash)==40;"
      "INSERT OR IGNORE INTO rcvidSha3(x)"
      "   SELECT rcvid FROM unversioned WHERE length(hash)==64;"
    );
  }
  db_prepare(&q, 
    "SELECT rcvid, login, datetime(rcvfrom.mtime), rcvfrom.ipaddr"
  db_prepare(&q,
    "SELECT rcvid, login, datetime(rcvfrom.mtime), rcvfrom.ipaddr,"
    "       EXISTS(SELECT 1 FROM rcvidUsed WHERE x=rcvfrom.rcvid),"
    "       EXISTS(SELECT 1 FROM rcvidSha1 WHERE x=rcvfrom.rcvid),"
    "       EXISTS(SELECT 1 FROM rcvidSha3 WHERE x=rcvfrom.rcvid)"
    "  FROM rcvfrom LEFT JOIN user USING(uid)"
    " ORDER BY rcvid DESC LIMIT 31 OFFSET %d",
    ofst
    " ORDER BY rcvid DESC LIMIT %d OFFSET %d",
    showAll ? -1 : perScreen+1, ofst
  );
  @ <p>Whenever new artifacts are added to the repository, either by
  @ push or using the web interface, an entry is made in the RCVFROM table
  @ to record the source of that artifact.  This log facilitates
  @ finding and fixing attempts to inject illicit content into the
  @ repository.</p>
  @
  @ <p>Click on the "rcvid" to show a list of specific artifacts received
  @ by a transaction.  After identifying illicit artifacts, remove them
  @ using the "Shun" feature.</p>
  @ using the "Shun" button.  If an "rcvid" is not hyperlinked, that means
  @ all artifacts associated with that rcvid have already been shunned
  @ or purged.</p>
  @
  @ <table cellpadding=0 cellspacing=0 border=0>
  @ <tr><th>rcvid</th><th width=15>
  @     <th>Date</th><th width=15><th>User</th>
  @     <th width=15><th>IP&nbsp;Address</th></tr>
  @ <table cellpadding="0" cellspacing="0" border="0">
  @ <tr><th style="padding-right: 15px;text-align: right;">rcvid</th>
  @     <th style="padding-right: 15px;text-align: left;">Date</th>
  @     <th style="padding-right: 15px;text-align: left;">User</th>
  @     <th style="padding-right: 15px;text-align: left;">Hash</th>
  @     <th style="text-align: left;">IP&nbsp;Address</th></tr>
  cnt = 0;
  while( db_step(&q)==SQLITE_ROW ){
    int rcvid = db_column_int(&q, 0);
    const char *zUser = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    const char *zIpAddr = db_column_text(&q, 3);
    int usesSha1 = db_column_int(&q, 5)!=0;
    int usesSha3 = db_column_int(&q, 6)!=0;
    static const char *const zHashType[] = { "", "sha1", "sha3", "both" };
    const char *zHash = zHashType[usesSha1+usesSha3*2];
    if( cnt==30 ){
      style_submenu_element("Older", "Older",
    if( cnt==perScreen && !showAll ){
      style_submenu_element("Older", "rcvfromlist?ofst=%d", ofst+perScreen);
         "rcvfromlist?ofst=%d", ofst+30);
    }else{
      cnt++;
      @ <tr>
      if( db_column_int(&q,4) ){
        @ <td style="padding-right: 15px;text-align: right;">
      @ <td><a href="rcvfrom?rcvid=%d(rcvid)">%d(rcvid)</a></td><td>
      @ <td>%s(zDate)</td><td>
      @ <td>%h(zUser)</td><td>
      @ <td>&nbsp;%s(zIpAddr)&nbsp</td>
        @ <a href="rcvfrom?rcvid=%d(rcvid)">%d(rcvid)</a></td>
      }else{
        @ <td style="padding-right: 15px;text-align: right;">%d(rcvid)</td>
      }
      @ <td style="padding-right: 15px;text-align: left;">%s(zDate)</td>
      @ <td style="padding-right: 15px;text-align: left;">%h(zUser)</td>
      @ <td style="padding-right: 15px;text-align: left;">%s(zHash)</td>
      @ <td style="text-align: left;">%s(zIpAddr)</td>
      @ </tr>
    }
  }
  db_finalize(&q);
  @ </table>
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: rcvfrom
**
** Show a single RCVFROM table entry.
** Show a single RCVFROM table entry identified by the rcvid= query
** parameters.  Requires Admin privilege.
*/
void rcvfrom_page(void){
  int rcvid = atoi(PD("rcvid","0"));
  Stmt q;
  int cnt;

  login_check_credentials();
  if( !g.okAdmin ){
    login_needed();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  style_header("Content Source %d", rcvid);
  db_prepare(&q, 
  style_header("Artifact Receipt %d", rcvid);
  if( db_exists(
    "SELECT 1 FROM blob WHERE rcvid=%d AND"
    " NOT EXISTS (SELECT 1 FROM shun WHERE shun.uuid=blob.uuid)", rcvid)
  ){
    style_submenu_element("Shun All", "shun?shun&rcvid=%d#addshun", rcvid);
  }
  if( db_exists(
    "SELECT 1 FROM blob WHERE rcvid=%d AND"
    " EXISTS (SELECT 1 FROM shun WHERE shun.uuid=blob.uuid)", rcvid)
  ){
    style_submenu_element("Unshun All", "shun?accept&rcvid=%d#delshun", rcvid);
  }
  db_prepare(&q,
    "SELECT login, datetime(rcvfrom.mtime), rcvfrom.ipaddr"
    "  FROM rcvfrom LEFT JOIN user USING(uid)"
    " WHERE rcvid=%d",
    rcvid
  );
  @ <table cellspacing=15 cellpadding=0 border=0>
  @ <tr><td valign="top" align="right"><b>rcvid:</b></td>
  @ <table cellspacing="15" cellpadding="0" border="0">
  @ <tr><th valign="top" align="right">rcvid:</th>
  @ <td valign="top">%d(rcvid)</td></tr>
  if( db_step(&q)==SQLITE_ROW ){
    const char *zUser = db_column_text(&q, 0);
    const char *zDate = db_column_text(&q, 1);
    const char *zIpAddr = db_column_text(&q, 2);
    @ <tr><td valign="top" align="right"><b>User:</b></td>
    @ <tr><th valign="top" align="right">User:</th>
    @ <td valign="top">%s(zUser)</td></tr>
    @ <tr><td valign="top" align="right"><b>Date:</b></td>
    @ <tr><th valign="top" align="right">Date:</th>
    @ <td valign="top">%s(zDate)</td></tr>
    @ <tr><td valign="top" align="right"><b>IP&nbsp;Address:</b></td>
    @ <tr><th valign="top" align="right">IP&nbsp;Address:</th>
    @ <td valign="top">%s(zIpAddr)</td></tr>
  }
  db_finalize(&q);
  db_multi_exec(
    "CREATE TEMP TABLE toshow(rid INTEGER PRIMARY KEY);"
    "INSERT INTO toshow SELECT rid FROM blob WHERE rcvid=%d", rcvid
  );
  describe_artifacts("IN toshow");
  db_prepare(&q,
    "SELECT blob.rid, blob.uuid, blob.size, description.summary\n"
    "  FROM blob LEFT JOIN description ON (blob.rid=description.rid)"
    "SELECT rid, uuid, size FROM blob WHERE rcvid=%d", rcvid
    " WHERE blob.rcvid=%d", rcvid
  );
  cnt = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUuid = db_column_text(&q, 1);
    int size = db_column_int(&q, 2);
    const char *zDesc = db_column_text(&q, 3);
    if( zDesc==0 ) zDesc = "";
    if( cnt==0 ){
  @ <tr><td valign="top" align="right"><b>Artifacts:</b></td>
  @ <td valign="top">
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    int size = db_column_int(&q, 2);
      @ <tr><th valign="top" align="right">Artifacts:</th>
      @ <td valign="top">
    }
    cnt++;
    @ <a href="%R/info/%s(zUuid)">%s(zUuid)</a>
    @ %h(zDesc) (size: %d(size))<br>
  }
  if( cnt>0 ){
    @ <p>
    if( db_exists(
      "SELECT 1 FROM blob WHERE rcvid=%d AND"
      " NOT EXISTS (SELECT 1 FROM shun WHERE shun.uuid=blob.uuid)", rcvid)
    ){
      @ <form action='%R/shun'>
      @ <input type="hidden" name="shun">
      @ <input type="hidden" name="rcvid" value='%d(rcvid)'>
      @ <input type="submit" value="Shun All These Artifacts">
      @ </form>
    }
    if( db_exists(
      "SELECT 1 FROM blob WHERE rcvid=%d AND"
      " EXISTS (SELECT 1 FROM shun WHERE shun.uuid=blob.uuid)", rcvid)
    ){
      @ <form action='%R/shun'>
      @ <input type="hidden" name="unshun">
      @ <input type="hidden" name="rcvid" value='%d(rcvid)'>
      @ <input type="submit" value="Unshun All These Artifacts">
      @ </form>
    }
    @ </td></tr>
  }
  if( db_table_exists("repository","unversioned") ){
    cnt = 0;
    if( PB("uvdelete") && PB("confirmdelete") ){
      db_multi_exec(
        "DELETE FROM unversioned WHERE rcvid=%d", rcvid
      );
    }
    db_finalize(&q);
    db_prepare(&q,
      "SELECT name, hash, sz\n"
      "  FROM unversioned "
      " WHERE rcvid=%d", rcvid
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q,0);
      const char *zHash = db_column_text(&q,1);
      int size = db_column_int(&q,2);
    @ <a href="%s(g.zBaseURL)/info/%s(zUuid)">%s(zUuid)</a>
    @ (rid: %d(rid), size: %d(size))<br>
  }
  @ </td></tr>
      int isDeleted = zHash==0;
      if( cnt==0 ){
        @ <tr><th valign="top" align="right">Unversioned&nbsp;Files:</th>
        @ <td valign="top">
      }
      cnt++;
      if( isDeleted ){
        @ %h(zName) (deleted)<br>
      }else{
        @ <a href="%R/uv/%h(zName)">%h(zName)</a> (size: %d(size))<br>
      }
    }
    if( cnt>0 ){
      @ <p><form action='%R/rcvfrom'>
      @ <input type="hidden" name="rcvid" value='%d(rcvid)'>
      @ <input type="hidden" name="uvdelete" value="1">
      if( PB("uvdelete") ){
        @ <input type="hidden" name="confirmdelete" value="1">
        @ <input type="submit" value="Confirm Deletion of These Files">
      }else{
        @ <input type="submit" value="Delete These Unversioned Files">
      }
      @ </form>
      @ </td></tr>
    }
  }
  @ </table>
  db_finalize(&q);
  style_finish_page();
}
Added src/sitemap.c.







































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the sitemap webpage.
*/
#include "config.h"
#include "sitemap.h"
#include <assert.h>

/*
** WEBPAGE: sitemap
**
** List some of the web pages offered by the Fossil web engine.  This
** page is intended as a supplement to the menu bar on the main screen.
** That is, this page is designed to hold links that are omitted from
** the main menu due to lack of space.
**
** Additional entries defined by the "sitemap-extra" setting are included
** in the sitemap.  "sitemap-extra" should be a TCL script with three
** values per entry:
**
**    *    The displayed text
**
**    *    The URL
**
**    *    A "capexpr" expression that determines whether or not to include
**         the entry based on user capabilities.  "*" means always include
**         the entry and "{}" means never.
**
** If the "e=1" query parameter is present, then the standard content
** is omitted and only the sitemap-extra content is shown.  If "e=2" is
** present, then only the standard content is shown and sitemap-extra
** content is omitted.
**
** If the "popup" query parameter is present and this is a POST request
** from the same origin, then the normal HTML header and footer information
** is omitted and the HTML text returned is just a raw "<ul>...</ul>".
*/
void sitemap_page(void){
  int srchFlags;
  int inSublist = 0;
  int i;
  int isPopup = 0;         /* This is an XMLHttpRequest() for /sitemap */
  int e = atoi(PD("e","0"));
  const char *zExtra;

#if 0  /* Removed 2021-01-26 */
  const struct {
    const char *zTitle;
    const char *zProperty;
  } aExtra[] = {
    { "Documentation",  "sitemap-docidx" },
    { "Download",       "sitemap-download" },
    { "License",        "sitemap-license" },
    { "Contact",        "sitemap-contact" },
  };
#endif

  login_check_credentials();
  if( P("popup")!=0 ){
    /* The "popup" query parameter
    ** then disable anti-robot defenses */
    isPopup = 1;
    g.perm.Hyperlink = 1;
    g.jsHref = 0;
  }
  srchFlags = search_restrict(SRCH_ALL);
  if( !isPopup ){
    style_header("Site Map");
    style_adunit_config(ADUNIT_RIGHT_OK);
  }

  @ <ul id="sitemap" class="columns" style="column-width:20em">
  if( (e&1)==0 ){
    @ <li>%z(href("%R/home"))Home Page</a>
  }

#if 0  /* Removed 2021-01-26  */
  for(i=0; i<sizeof(aExtra)/sizeof(aExtra[0]); i++){
    char *z = db_get(aExtra[i].zProperty,0);
    if( z==0 || z[0]==0 ) continue;
    if( !inSublist ){
      @ <ul>
      inSublist = 1;
    }
    if( z[0]=='/' ){
      @ <li>%z(href("%R%s",z))%s(aExtra[i].zTitle)</a></li>
    }else{
      @ <li>%z(href("%s",z))%s(aExtra[i].zTitle)</a></li>
    }
  }
#endif

  zExtra = db_get("sitemap-extra",0);
  if( zExtra && (e&2)==0 ){
    int rc;
    char **azExtra = 0;
    int *anExtra;
    int nExtra = 0;
    if( isPopup ) Th_FossilInit(0);
    if( (e&1)!=0 ) inSublist = 1;
    rc = Th_SplitList(g.interp, zExtra, (int)strlen(zExtra),
                      &azExtra, &anExtra, &nExtra);
    if( rc==TH_OK && nExtra ){
      for(i=0; i+2<nExtra; i+=3){
        int nResult = 0;
        const char *zResult;
        int iCond = 0;
        rc = capexprCmd(g.interp, 0, 2,
                (const char**)&azExtra[i+1], (int*)&anExtra[i+1]);
        if( rc!=TH_OK ) continue;
        zResult = Th_GetResult(g.interp, &nResult);
        Th_ToInt(g.interp, zResult, nResult, &iCond);
        if( iCond==0 ) continue;
        if( !inSublist ){
          @ <ul>
          inSublist = 1;
        }
        if( azExtra[i+1][0]=='/' ){
          @ <li>%z(href("%R%s",azExtra[i+1]))%h(azExtra[i])</a></li>
        }else{
          @ <li>%z(href("%s",azExtra[i+1]))%s(azExtra[i])</a></li>
        }
      }
    }
    Th_Free(g.interp, azExtra);
  }
  if( (e&1)!=0 ) goto end_of_sitemap;

#if 0  /* Removed on 2021-02-11.  Make a sitemap-extra entry if you */
       /* really want this */
  if( srchFlags & SRCH_DOC ){
    if( !inSublist ){
      @ <ul>
      inSublist = 1;
    }
    @ <li>%z(href("%R/docsrch"))Documentation Search</a></li>
  }
#endif

  if( inSublist ){
    @ </ul>
    inSublist = 0;
  }
  @ </li>
  if( g.perm.Read ){
    const char *zEditGlob = db_get("fileedit-glob","");
    @ <li>%z(href("%R/tree"))File Browser</a>
    @   <ul>
    @   <li>%z(href("%R/tree?type=tree&ci=trunk"))Tree-view,
    @        Trunk Check-in</a></li>
    @   <li>%z(href("%R/tree?type=flat"))Flat-view</a></li>
    @   <li>%z(href("%R/fileage?name=trunk"))File ages for Trunk</a></li>
    @   <li>%z(href("%R/uvlist"))Unversioned Files</a>
    if( g.perm.Write && zEditGlob[0]!=0 ){
      @   <li>%z(href("%R/fileedit"))On-line File Editor</li>
    }
    @ </ul>
  }
  if( g.perm.Read ){
    @ <li>%z(href("%R/timeline"))Project Timeline</a>
    @ <ul>
    @   <li>%z(href("%R/reports"))Activity Reports</a></li>
    @   <li>%z(href("%R/sitemap-timeline"))Other timelines</a></li>
    @ </ul>
    @ </li>
  }
  if( g.perm.Read ){
    @ <li>%z(href("%R/brlist"))Branches</a>
    @ <ul>
    @   <li>%z(href("%R/taglist"))Tags</a></li>
    @   <li>%z(href("%R/leaves"))Leaf Check-ins</a></li>
    @ </ul>
    @ </li>
  }
  if( srchFlags ){
    @ <li>%z(href("%R/search"))Search</a></li>
  }
  if( g.perm.Chat ){
    @ <li>%z(href("%R/chat"))Chat</a></li>
  }
  if( g.perm.RdForum ){
    @ <li>%z(href("%R/forum"))Forum</a>
    @ <ul>
    @   <li>%z(href("%R/timeline?y=f"))Recent activity</a></li>
    @ </ul>
    @ </li>
  }
  if( g.perm.RdTkt ){
    @ <li>%z(href("%R/reportlist"))Tickets/Bug Reports</a>
    @   <ul>
    if( srchFlags & SRCH_TKT ){
      @   <li>%z(href("%R/tktsrch"))Ticket Search</a></li>
    }
    @   <li>%z(href("%R/timeline?y=t"))Recent activity</a></li>
    @   <li>%z(href("%R/attachlist"))List of Attachments</a></li>
    @   </ul>
    @ </li>
  }
  if( g.perm.RdWiki ){
    @ <li>%z(href("%R/wikihelp"))Wiki</a>
    @   <ul>
    if( srchFlags & SRCH_WIKI ){
      @     <li>%z(href("%R/wikisrch"))Wiki Search</a></li>
    }
    @     <li>%z(href("%R/wcontent"))List of Wiki Pages</a></li>
    @     <li>%z(href("%R/timeline?y=w"))Recent activity</a></li>
    @     <li>%z(href("%R/wikiedit?name=Sandbox"))Wiki Sandbox</a></li>
    @     <li>%z(href("%R/attachlist"))List of Attachments</a></li>
    @     <li>%z(href("%R/pikchrshow"))Pikchr Sandbox</a></li>
    @   </ul>
    @ </li>
  }

  if( !g.zLogin ){
    @ <li>%z(href("%R/login"))Login</a>
    @ <ul>
    if( login_self_register_available(0) ){
       @ <li>%z(href("%R/register"))Create a new account</a></li>
    }
  }else {
    @ <li>%z(href("%R/logout"))Logout from %h(g.zLogin)</a>
    @ <ul>
    if( g.perm.Password ){
      @ <li>%z(href("%R/logout"))Change Password for %h(g.zLogin)</a></li>
    }
  }
  if( alert_enabled() && g.perm.EmailAlert ){
    if( login_is_individual() ){
      @ <li>%z(href("%R/alerts"))Email Alerts for %h(g.zLogin)</a></li>
    }else{
      @ <li>%z(href("%R/subscribe"))Subscribe to Email Alerts</a></li>
    }
  }
  @ <li>%z(href("%R/cookies"))Cookies</a></li>
  @ </ul>
  @ </li>

  if( g.perm.Read ){
    @ <li>%z(href("%R/stat"))Repository Status</a>
    @   <ul>
    @   <li>%z(href("%R/hash-collisions"))Collisions on hash prefixes</a></li>
    if( g.perm.Admin ){
      @   <li>%z(href("%R/urllist"))List of URLs used to access
      @       this repository</a></li>
    }
    @   <li>%z(href("%R/bloblist"))List of Artifacts</a></li>
    @   </ul>
    @ </li>
  }
  @ <li>%z(href("%R/help"))Help</a>
  @   <ul>
  if( g.perm.Admin || g.perm.Write ||
      g.perm.WrForum || g.perm.WrTForum ||
      g.perm.NewWiki || g.perm.ApndWiki || g.perm.WrWiki || g.perm.ModWiki ||
      g.perm.NewTkt  || g.perm.ApndTkt  || g.perm.WrTkt  || g.perm.ModTkt ){
    @   <li>%z(href("%R/wiki_rules"))Wiki Formatting Rules</a></li>
    @   <li>%z(href("%R/md_rules"))Markdown Formatting Rules</a></li>
  }
  @   <li>%z(href("%R/test-all-help"))All "help" text on a single page</a></li>
  if( g.perm.Admin || g.perm.Write || g.perm.WrUnver ){
    @   <li>%z(href("%R/mimetype_list"))\
    @ Filename suffix to MIME type map</a></li>
  }
  @   </ul></li>
  if( g.perm.Admin ){
    @ <li><a href="%R/setup">Administration Pages</a>
    @   <ul>
    @   <li><a href="%R/secaudit0">Security Audit</a></li>
    @   <li><a href="%R/modreq">Pending Moderation Requests</a></li>
    @   </ul></li>
  }
  @ <li>%z(href("%R/skins"))Skins</a></li>
  @ <li>%z(href("%R/sitemap-test"))Test Pages</a></li>
  if( isPopup ){
    @ <li>%z(href("%R/sitemap"))Site Map</a></li>
  }

end_of_sitemap:
  @ </ul>
  if( !isPopup ){
    style_finish_page();
  }
}

/*
** WEBPAGE: sitemap-test
**
** List some of the web pages offered by the Fossil web engine for testing
** purposes.  This is similar to /sitemap, but is focused only on showing
** pages associated with testing.
*/
void sitemap_test_page(void){
  int isPopup = 0;         /* This is an XMLHttpRequest() for /sitemap */

  login_check_credentials();
  style_set_current_feature("sitemap");
  if( P("popup")!=0 && cgi_csrf_safe(0) ){
    /* If this is a POST from the same origin with the popup=1 parameter,
    ** then disable anti-robot defenses */
    isPopup = 1;
    g.perm.Hyperlink = 1;
    g.jsHref = 0;
  }
  if( !isPopup ){
    style_header("Test Page Map");
    style_adunit_config(ADUNIT_RIGHT_OK);
  }
  @ <ul id="sitemap" class="columns" style="column-width:20em">
  if( g.perm.Admin || db_get_boolean("test_env_enable",0) ){
    @ <li>%z(href("%R/test_env"))CGI Environment Test</a></li>
  }
  if( g.perm.Read ){
    @ <li>%z(href("%R/test-rename-list"))List of file renames</a></li>
  }
  @ <li>%z(href("%R/test-builtin-files"))List of built-in files</a></li>
  @ <li>%z(href("%R/mimetype_list"))List of MIME types</a></li>
  @ <li>%z(href("%R/hash-color-test"))Hash color test</a>
  if( g.perm.Admin ){
    @ <li>%z(href("%R/test-backlinks"))List of backlinks</a></li>
    @ <li>%z(href("%R/test-backlink-timeline"))Backlink timeline</a></li>
    @ <li>%z(href("%R/phantoms"))List of phantom artifacts</a></li>
    @ <li>%z(href("%R/test-warning"))Error Log test page</a></li>
    @ <li>%z(href("%R/repo_stat1"))Repository <tt>sqlite_stat1</tt> table</a>
    @ <li>%z(href("%R/repo_schema"))Repository schema</a></li>
  }
  if( g.perm.Read && g.perm.Hyperlink ){
    @ <li>%z(href("%R/timewarps"))Timeline of timewarps</a></li>
  }
  @ <li>%z(href("%R/cookies"))Content of display preference cookie</a></li>
  @ <li>%z(href("%R/test-captcha"))Random ASCII-art Captcha image</a></li>
  @ <li>%z(href("%R/test-piechart"))Pie-Chart generator test</a></li>
  if( !isPopup ){
    style_finish_page();
  }
}

/*
** WEBPAGE: sitemap-timeline
**
** Generate a list of hyperlinks to various (obscure) variations on
** the /timeline page.
*/
void sitemap_timeline_page(void){
  int isPopup = 0;         /* This is an XMLHttpRequest() for /sitemap */

  login_check_credentials();
  style_set_current_feature("sitemap");
  if( P("popup")!=0 && cgi_csrf_safe(0) ){
    /* If this is a POST from the same origin with the popup=1 parameter,
    ** then disable anti-robot defenses */
    isPopup = 1;
    g.perm.Hyperlink = 1;
    g.jsHref = 0;
  }
  if( !isPopup ){
    style_header("Timeline Examples");
    style_adunit_config(ADUNIT_RIGHT_OK);
  }
  @ <ul id="sitemap" class="columns" style="column-width:20em">
  @ <li>%z(href("%R/timeline?ymd"))Current day</a></li>
  @ <li>%z(href("%R/timeline?yw"))Current week</a></li>
  @ <li>%z(href("%R/timeline?ym"))Current month</a></li>
  @ <li>%z(href("%R/thisdayinhistory"))Today in history</a></li>
  @ <li>%z(href("%R/timeline?a=1970-01-01&y=ci&n=10"))First 10
  @     check-ins</a></li>
  @ <li>%z(href("%R/timeline?namechng"))File name changes</a></li>
  @ <li>%z(href("%R/timeline?forks"))Forks</a></li>
  @ <li>%z(href("%R/timeline?cherrypicks"))Cherrypick merges</a></li>
  @ <li>%z(href("%R/timewarps"))Timewarps</a></li>
  @ <li>%z(href("%R/timeline?ubg"))Color-coded by user</a></li>
  @ <li>%z(href("%R/timeline?deltabg"))Delta vs. baseline manifests</a></li>
  @ </ul>
  if( !isPopup ){
    style_finish_page();
  }
}
Added src/skin.js.








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/* Javascript that runs for the /setup_skin page.
*/
(function(){
  var x = document.getElementById('skStep1');
  x.onchange = function(){
    document.getElementById('f01').submit()
  }
}());
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/*
** Copyright (c) 2009 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Implementation of the Setup page for "skins".
*/
#include <assert.h>
#include "config.h"
#include <assert.h>
#include "skins.h"

/* @-comment: // */
/*
** A black-and-white theme with the project title in a bar across the top
** and no logo image.
*/
** SETTING: default-skin width=16
**
static const char zBuiltinSkin1[] = 
@ REPLACE INTO config VALUES('css','/* General settings for the entire page */
@ body {
@   margin: 0ex 1ex;
@   padding: 0px;
@   background-color: white;
@   font-family: "sans serif";
@ }
@ 
@ /* The project logo in the upper left-hand corner of each page */
@ div.logo {
@   display: table-row;
@   text-align: center;
@   /* vertical-align: bottom;*/
@   font-size: 2em;
@   font-weight: bold;
@   background-color: #707070;
@   color: #ffffff;
@ }
@ 
@ /* The page title centered at the top of each page */
@ div.title {
@   display: table-cell;
@   font-size: 1.5em;
@   font-weight: bold;
@   text-align: left;
@   padding: 0 0 0 10px;
@   color: #404040;
@   vertical-align: bottom;
@   width: 100%;
@ }
@ 
@ /* The login status message in the top right-hand corner */
@ div.status {
@   display: table-cell;
@   text-align: right;
@   vertical-align: bottom;
@   color: #404040;
@   font-size: 0.8em;
@   font-weight: bold;
@ }
@ 
@ /* The header across the top of the page */
@ div.header {
@   display: table;
@   width: 100%;
@ }
@ 
@ /* The main menu bar that appears at the top of the page beneath
@ ** the header */
@ div.mainmenu {
@   padding: 5px 10px 5px 10px;
@   font-size: 0.9em;
@   font-weight: bold;
@   text-align: center;
@   letter-spacing: 1px;
@   background-color: #404040;
@   color: white;
@ }
@ 
@ /* The submenu bar that *sometimes* appears below the main menu */
@ div.submenu {
@   padding: 3px 10px 3px 0px;
@   font-size: 0.9em;
@   text-align: center;
@   background-color: #606060;
@   color: white;
@ }
@ div.mainmenu a, div.mainmenu a:visited, div.submenu a, div.submenu a:visited {
@   padding: 3px 10px 3px 10px;
@   color: white;
@   text-decoration: none;
@ }
@ div.mainmenu a:hover, div.submenu a:hover {
@   color: #404040;
@   background-color: white;
@ }
@ 
@ /* All page content from the bottom of the menu or submenu down to
@ ** the footer */
@ div.content {
@   padding: 0ex 0ex 0ex 0ex;
@ }
@ /* Hyperlink colors */
@ div.content a { color: #604000; }
@ div.content a:link { color: #604000;}
@ div.content a:visited { color: #600000; }
@ 
@ /* Some pages have section dividers */
@ div.section {
@   margin-bottom: 0px;
@   margin-top: 1em;
@   padding: 1px 1px 1px 1px;
@   font-size: 1.2em;
@   font-weight: bold;
@   background-color: #404040;
@   color: white;
@ }
@ 
@ /* The "Date" that occurs on the left hand side of timelines */
@ div.divider {
@   background: #a0a0a0;
@   border: 2px #505050 solid;
@   font-size: 1em; font-weight: normal;
@   padding: .25em;
@   margin: .2em 0 .2em 0;
@   float: left;
@   clear: left;
@ }
@ 
@ /* The footer at the very bottom of the page */
@ div.footer {
@   font-size: 0.8em;
@   margin-top: 12px;
@   padding: 5px 10px 5px 10px;
@   text-align: right;
@   background-color: #404040;
@   color: white;
@ }
@ 
@ /* The label/value pairs on (for example) the vinfo page */
@ table.label-value th {
@   vertical-align: top;
@   text-align: right;
@   padding: 0.2ex 2ex;
@ }');
@ REPLACE INTO config VALUES('header','<html>
@ <head>
@ <title>$<project_name>: $<title></title>
@ <link rel="alternate" type="application/rss+xml" title="RSS Feed"
@       href="$baseurl/timeline.rss">
@ <link rel="stylesheet" href="$baseurl/style.css?blackwhite" type="text/css"
@       media="screen">
@ </head>
@ <body>
@ <div class="header">
@   <div class="logo">
@     <nobr>$<project_name></nobr>
@   </div>
@ </div>
@ <div class="header">
@   <div class="title">$<title></div>
@   <div class="status"><nobr><th1>
@      if {[info exists login]} {
@        puts "Logged in as $login"
@      } else {
@        puts "Not logged in"
@      }
@   </th1></nobr></div>
@ </div>
@ <div class="mainmenu"><th1>
@ html "<a href=''$baseurl$index_page''>Home</a> "
@ if {[anycap jor]} {
** If the text value if this setting is the name of a built-in skin
@   html "<a href=''$baseurl/timeline''>Timeline</a> "
@ }
@ if {[hascap oh]} {
@   html "<a href=''$baseurl/dir?ci=tip''>Files</a> "
@ }
@ if {[hascap o]} {
@   html "<a href=''$baseurl/leaves''>Leaves</a> "
@   html "<a href=''$baseurl/brlist''>Branches</a> "
@   html "<a href=''$baseurl/taglist''>Tags</a> "
@ }
@ if {[hascap r]} {
@   html "<a href=''$baseurl/reportlist''>Tickets</a> "
@ }
@ if {[hascap j]} {
@   html "<a href=''$baseurl/wiki''>Wiki</a> "
@ }
@ if {[hascap s]} {
@   html "<a href=''$baseurl/setup''>Admin</a> "
@ } elseif {[hascap a]} {
@   html "<a href=''$baseurl/setup_ulist''>Users</a> "
@ }
@ if {[info exists login]} {
@   html "<a href=''$baseurl/login''>Logout</a> "
@ } else {
@   html "<a href=''$baseurl/login''>Login</a> "
@ }
@ </th1></div>
@ ');
@ REPLACE INTO config VALUES('footer','<div class="footer">
@ Fossil version $manifest_version $manifest_date 
@ </div>
@ </body></html>
@ ');
;

** then the named skin becomes the default skin for the repository.
/*
** A tan theme with the project title above the user identification
** and no logo image.
*/
static const char zBuiltinSkin2[] = 
@ REPLACE INTO config VALUES('css','/* General settings for the entire page */
@ body {
@   margin: 0ex 0ex;
@   padding: 0px;
@   background-color: #fef3bc;
@   font-family: sans-serif;
@ }
@ 
@ /* The project logo in the upper left-hand corner of each page */
@ div.logo {
@   display: inline;
@   text-align: center;
@   vertical-align: bottom;
@   font-weight: bold;
@   font-size: 2.5em;
@   color: #a09048;
@ }
@ 
@ /* The page title centered at the top of each page */
@ div.title {
@   display: table-cell;
@   font-size: 2em;
@   font-weight: bold;
@   text-align: left;
@   padding: 0 0 0 5px;
@   color: #a09048;
@   vertical-align: bottom;
@   width: 100%;
@ }
@ 
@ /* The login status message in the top right-hand corner */
@ div.status {
@   display: table-cell;
@   text-align: right;
@   vertical-align: bottom;
@   color: #a09048;
@   padding: 5px 5px 0 0;
@   font-size: 0.8em;
@   font-weight: bold;
@ }
@ 
@ /* The header across the top of the page */
@ div.header {
@   display: table;
@   width: 100%;
@ }
@ 
@ /* The main menu bar that appears at the top of the page beneath
@ ** the header */
@ div.mainmenu {
@   padding: 5px 10px 5px 10px;
@   font-size: 0.9em;
@   font-weight: bold;
@   text-align: center;
@   letter-spacing: 1px;
@   background-color: #a09048;
@   color: black;
@ }
@ 
@ /* The submenu bar that *sometimes* appears below the main menu */
@ div.submenu {
@   padding: 3px 10px 3px 0px;
@   font-size: 0.9em;
@   text-align: center;
@   background-color: #c0af58;
@   color: white;
@ }
@ div.mainmenu a, div.mainmenu a:visited, div.submenu a, div.submenu a:visited {
@   padding: 3px 10px 3px 10px;
@   color: white;
@   text-decoration: none;
@ }
@ div.mainmenu a:hover, div.submenu a:hover {
@   color: #a09048;
@   background-color: white;
@ }
@ 
@ /* All page content from the bottom of the menu or submenu down to
@ ** the footer */
@ div.content {
@   padding: 1ex 5px;
@ }
@ div.content a { color: #706532; }
@ div.content a:link { color: #706532; }
@ div.content a:visited { color: #704032; }
@ div.content a:hover { background-color: white; color: #706532; }
@ 
@ /* Some pages have section dividers */
@ div.section {
@   margin-bottom: 0px;
@   margin-top: 1em;
@   padding: 3px 3px 0 3px;
@   font-size: 1.2em;
@   font-weight: bold;
@   background-color: #a09048;
@   color: white;
@ }
@ 
@ /* The "Date" that occurs on the left hand side of timelines */
@ div.divider {
@   background: #e1d498;
@   border: 2px #a09048 solid;
@   font-size: 1em; font-weight: normal;
@   padding: .25em;
@   margin: .2em 0 .2em 0;
@   float: left;
@   clear: left;
@ }
@ 
@ /* The footer at the very bottom of the page */
@ div.footer {
@   font-size: 0.8em;
@   margin-top: 12px;
@   padding: 5px 10px 5px 10px;
@   text-align: right;
@   background-color: #a09048;
@   color: white;
@ }
@ 

@ /* Hyperlink colors */
@ div.footer a { color: white; }
@ div.footer a:link { color: white; }
@ div.footer a:visited { color: white; }
@ div.footer a:hover { background-color: white; color: #558195; }
@ 
@ /* <verbatim> blocks */
@ pre.verbatim {
@    background-color: #f5f5f5;
@    padding: 0.5em;
@ }
@ 
@ /* The label/value pairs on (for example) the ci page */
@ table.label-value th {
@   vertical-align: top;
@   text-align: right;
@   padding: 0.2ex 2ex;
@ }
@ ');
@ REPLACE INTO config VALUES('header','<html>
@ <head>
@ <title>$<project_name>: $<title></title>
@ <link rel="alternate" type="application/rss+xml" title="RSS Feed"
@       href="$baseurl/timeline.rss">
@ <link rel="stylesheet" href="$baseurl/style.css?tan" type="text/css"
@       media="screen">
@ </head>
@ <body>
@ <div class="header">
@   <div class="title">$<title></div>
@   <div class="status">
@     <div class="logo"><nobr>$<project_name></nobr></div><br/>
@     <nobr><th1>
@      if {[info exists login]} {
@        puts "Logged in as $login"
@      } else {
@        puts "Not logged in"
@      }
@   </th1></nobr></div>
@ </div>
@ <div class="mainmenu"><th1>
@ html "<a href=''$baseurl$index_page''>Home</a> "
@ if {[anycap jor]} {
@   html "<a href=''$baseurl/timeline''>Timeline</a> "
@ }
@ if {[hascap oh]} {
@   html "<a href=''$baseurl/dir?ci=tip''>Files</a> "
@ }
@ if {[hascap o]} {
@   html "<a href=''$baseurl/leaves''>Leaves</a> "
@   html "<a href=''$baseurl/brlist''>Branches</a> "
@   html "<a href=''$baseurl/taglist''>Tags</a> "
@ }
@ if {[hascap r]} {
@   html "<a href=''$baseurl/reportlist''>Tickets</a> "
@ }
@ if {[hascap j]} {
@   html "<a href=''$baseurl/wiki''>Wiki</a> "
@ }
@ if {[hascap s]} {
@   html "<a href=''$baseurl/setup''>Admin</a> "
@ } elseif {[hascap a]} {
@   html "<a href=''$baseurl/setup_ulist''>Users</a> "
@ }
@ if {[info exists login]} {
@   html "<a href=''$baseurl/login''>Logout</a> "
@ } else {
@   html "<a href=''$baseurl/login''>Login</a> "
@ }
@ </th1></div>
@ ');
@ REPLACE INTO config VALUES('footer','<div class="footer">
@ Fossil version $manifest_version $manifest_date
@ </div>
@ </body></html>
@ ');
;

/*
** Black letters on a white or cream background with the main menu
** stuck on the left-hand side.
*/
static const char zBuiltinSkin3[] = 
@ REPLACE INTO config VALUES('css','/* General settings for the entire page */
@ body {
@     margin:0px 0px 0px 0px;
@     padding:0px;
@     font-family:verdana, arial, helvetica, "sans serif";
@     color:#333;
@     background-color:white;
@ }
@ 
@ /* consistent colours */
@ h2 {
@   color: #333;
@ }
@ h3 {
@   color: #333;
@ }
@ 
@ /* The project logo in the upper left-hand corner of each page */
@ div.logo {
@   display: table-cell;
@   text-align: left;
@   vertical-align: bottom;
@   font-weight: bold;
@   color: #333;
@ }
@ 
@ /* The page title centered at the top of each page */
@ div.title {
@   display: table-cell;
@   font-size: 2em;
@   font-weight: bold;
@   text-align: center;
@   color: #333;
@   vertical-align: bottom;
@   width: 100%;
@ }
@ 
@ /* The login status message in the top right-hand corner */
@ div.status {
@   display: table-cell;
@   padding-right: 10px;
@   text-align: right;
@   vertical-align: bottom;
@   padding-bottom: 5px;
@   color: #333;
@   font-size: 0.8em;
@   font-weight: bold;
@ }
@ 
@ /* The header across the top of the page */
@ div.header {
@     margin:10px 0px 10px 0px;
@     padding:1px 0px 0px 20px;
@     border-style:solid;
@     border-color:black;
@     border-width:1px 0px;
@     background-color:#eee;
@ }
@ 
@ /* The main menu bar that appears at the top left of the page beneath
@ ** the header. Width must be co-ordinated with the container below */
@ div.mainmenu {
@   float: left;
@   margin-left: 10px;
@   margin-right: 10px;
@   font-size: 0.9em;
@   font-weight: bold;
@   padding:5px;
@   background-color:#eee;
@   border:1px solid #999;
@   width:8em;
@ }
@ 
@ /* Main menu is now a list */
@ div.mainmenu ul {
@   padding: 0;
@   list-style:none;
@ }
@ div.mainmenu a, div.mainmenu a:visited{
@   padding: 1px 10px 1px 10px;
@   color: #333;
@   text-decoration: none;
@ }
@ div.mainmenu a:hover {
@   color: #eee;
@   background-color: #333;
@ }
@ 
@ /* Container for the sub-menu and content so they don''t spread
@ ** out underneath the main menu */
@ #container {
@   padding-left: 9em;
@ }
@ 
@ /* The submenu bar that *sometimes* appears below the main menu */
@ div.submenu {
@   padding: 3px 10px 3px 10px;
@   font-size: 0.9em;
@   text-align: center;
@   border:1px solid #999;
@   border-width:1px 0px;
@   background-color: #eee;
@   color: #333;
@ }
@ div.submenu a, div.submenu a:visited {
@   padding: 3px 10px 3px 10px;
@   color: #333;
@   text-decoration: none;
@ }
@ div.submenu a:hover {
@   color: #eee;
@   background-color: #333;
@ }
@ 
@ /* All page content from the bottom of the menu or submenu down to
@ ** the footer */
@ div.content {
@   float right;
@   padding: 2ex 1ex 0ex 2ex;
@ }
@ 
@ /* Some pages have section dividers */
@ div.section {
@   margin-bottom: 0px;
@   margin-top: 1em;
@   padding: 1px 1px 1px 1px;
@   font-size: 1.2em;
@   font-weight: bold;
@   border-style:solid;
@   border-color:#999;
@   border-width:1px 0px;
@   background-color: #eee;
@   color: #333;
@ }
@ 
@ /* The "Date" that occurs on the left hand side of timelines */
@ div.divider {
@   background: #eee;
@   border: 2px #999 solid;
@   font-size: 1em; font-weight: normal;
@   padding: .25em;
@   margin: .2em 0 .2em 0;
@   float: left;
@   clear: left;
@   color: #333
@ }
@ 
@ /* The footer at the very bottom of the page */
@ div.footer {
@   font-size: 0.8em;
@   margin-top: 12px;
@   padding: 5px 10px 5px 10px;
@   text-align: right;
@   background-color: #eee;
@   color: #555;
@ }
@ 
@ /* <verbatim> blocks */
@ pre.verbatim {
@    background-color: #f5f5f5;
@    padding: 0.5em;
@ }
@ 
@ /* The label/value pairs on (for example) the ci page */
@ table.label-value th {
@   vertical-align: top;
@   text-align: right;
@   padding: 0.2ex 2ex;
@ }');
@ REPLACE INTO config VALUES('header','<html>
@ <head>
@ <title>$<project_name>: $<title></title>
@ <link rel="alternate" type="application/rss+xml" title="RSS Feed"
@       href="$baseurl/timeline.rss">
@ <link rel="stylesheet" href="$baseurl/style.css?black2" type="text/css"
@       media="screen">
@ </head>
@ <body>
@ <div class="header">
@   <div class="logo">
@     <!-- <img src="$baseurl/logo" alt="logo"> -->
@     <br><nobr>$<project_name></nobr>
@   </div>
@   <div class="title">$<title></div>
@   <div class="status"><nobr><th1>
@      if {[info exists login]} {
@        puts "Logged in as $login"
@      } else {
@        puts "Not logged in"
@      }
@   </th1></nobr></div>
@ </div>
@ <div class="mainmenu"><ul><th1>
@ html "<li><a href=''$baseurl$index_page''>Home</a></li>"
@ if {[anycap jor]} {
@   html "<li><a href=''$baseurl/timeline''>Timeline</a></li>"
@ }
@ if {[hascap oh]} {
@   html "<li><a href=''$baseurl/dir?ci=tip''>Files</a></li>"
@ }
@ if {[hascap o]} {
@   html "<li><a href=''$baseurl/leaves''>Leaves</a></li>"
@   html "<li><a href=''$baseurl/brlist''>Branches</a></li>"
@   html "<li><a href=''$baseurl/taglist''>Tags</a></li>"
@ }
@ if {[hascap r]} {
@   html "<li><a href=''$baseurl/reportlist''>Tickets</a></li>"
@ }
@ if {[hascap j]} {
@   html "<li><a href=''$baseurl/wiki''>Wiki</a></li>"
@ }
@ if {[hascap s]} {
@   html "<li><a href=''$baseurl/setup''>Admin</a></li>"
@ } elseif {[hascap a]} {
@   html "<li><a href=''$baseurl/setup_ulist''>Users</a></li>"
@ }
@ if {[info exists login]} {
@   html "<li><a href=''$baseurl/login''>Logout</a></li>"
@ } else {
@   html "<li><a href=''$baseurl/login''>Login</a></li>"
@ }
@ </th1></ul></div>
@ <div id="container">
@ ');
@ REPLACE INTO config VALUES('footer','</div>
@ <div class="footer">
@ Fossil version $manifest_version $manifest_date
@ </div>
@ </body></html>
@ ');
;
/*
** An array of available built-in skins.
**
** To add new built-in skins:
**
**    1.  Pick a name for the new skin.  (Here we use "xyzzy").
**
**    2.  Install files skins/xyzzy/css.txt, skins/xyzzy/header.txt,
**        and skins/xyzzy/footer.txt into the source tree.
**
**    3.  Rerun "tclsh makemake.tcl" in the src/ folder in order to
**        rebuild the makefiles to reference the new CSS, headers, and footers.
**
**    4.  Make an entry in the following array for the new skin.
*/
static struct BuiltinSkin {
  const char *zName;
  const char *zValue;
  const char *zDesc;    /* Description of this skin */
  const char *zLabel;   /* The directory under skins/ holding this skin */
  char *zSQL;           /* Filled in at run-time with SQL to insert this skin */
} aBuiltinSkin[] = {
  { "Default",                     0 /* Filled in at runtime */ },
  { "Plain Gray, No Logo",         zBuiltinSkin1                },
  { "Khaki, No Logo",              zBuiltinSkin2                },
  { "Black & White, Menu on Left", zBuiltinSkin3                },
  { "Default",                           "default",           0 },
  { "Ardoise",                           "ardoise",           0 },
  { "Black & White",                     "black_and_white",   0 },
  { "Blitz",                             "blitz",             0 },
  { "Dark Mode",                         "darkmode",          0 },
  { "Eagle",                             "eagle",             0 },
  { "Étienne",                           "etienne",           0 },
  { "Khaki",                             "khaki",             0 },
  { "Original",                          "original",          0 },
  { "Plain Gray",                        "plain_gray",        0 },
  { "Xekri",                             "xekri",             0 },
};

/*
** A skin consists of five "files" named here:
*/
static const char *const azSkinFile[] = {
  "css", "header", "footer", "details", "js"
};

/*
** Alternative skins can be specified in the CGI script or by options
** on the "http", "ui", and "server" commands.  The alternative skin
** name must be one of the aBuiltinSkin[].zLabel names.  If there is
** a match, that alternative is used.
**
** The following static variable holds the name of the alternative skin,
** or NULL if the skin should be as configured.
*/
static struct BuiltinSkin *pAltSkin = 0;
static char *zAltSkinDir = 0;
static int iDraftSkin = 0;
/*
** Used by skin_use_alternative() to store the current skin rank skin
** so that the /skins page can, if warranted, warn the user that skin
** changes won't have any effect.
*/
static int nSkinRank = 6;

/*
** How the specific skin being used was chosen
*/
#if INTERFACE
#define SKIN_FROM_DRAFT     0   /* The "draftN" prefix on the PATH_INFO */
#define SKIN_FROM_CMDLINE   1   /* --skin option to server command-line */
#define SKIN_FROM_CGI       2   /* skin: parameter in CGI script */
#define SKIN_FROM_QPARAM    3   /* skin= query parameter */
#define SKIN_FROM_COOKIE    4   /* skin= from fossil_display_settings cookie*/
#define SKIN_FROM_SETTING   5   /* Built-in named by "default-skin" setting */
#define SKIN_FROM_CUSTOM    6   /* Skin values in CONFIG table */
#define SKIN_FROM_DEFAULT   7   /* The built-in named "default" */
#define SKIN_FROM_UNKNOWN   8   /* Do not yet know which skin to use */
#endif /* INTERFACE */
static int iSkinSource = SKIN_FROM_UNKNOWN;


/*
** Skin details are a set of key/value pairs that define display
** attributes of the skin that cannot be easily specified using CSS
** or that need to be known on the server-side.
**
** The following array holds the value for all known skin details.
*/
static struct SkinDetail {
  const char *zName;      /* Name of the detail */
  const char *zValue;     /* Value of the detail */
} aSkinDetail[] = {
  { "pikchr-background",          ""      },
  { "pikchr-fontscale",           ""      },
  { "pikchr-foreground",          ""      },
  { "pikchr-scale",               ""      },
  { "timeline-arrowheads",        "1"     },
  { "timeline-circle-nodes",      "0"     },
  { "timeline-color-graph-lines", "0"     },
  { "white-foreground",           "0"     },
};

/*
** Invoke this routine to set the alternative skin.  Return NULL if the
** alternative was successfully installed.  Return a string listing all
** available skins if zName does not match an available skin.  Memory
** for the returned string comes from fossil_malloc() and should be freed
** by the caller.
**
** If the alternative skin name contains one or more '/' characters, then
** it is assumed to be a directory on disk that holds override css.txt,
** footer.txt, and header.txt.  This mode can be used for interactive
** development of new skins.
**
** The 2nd parameter is a ranking of how important this alternative
** skin declaration is, and lower values trump higher ones. If a call
** to this function passes a higher-valued rank than a previous call,
** the subsequent call becomes a no-op. Only calls with the same or
** lower rank (i.e. higher priority) will overwrite a previous
** setting. This approach is used because the CGI/server-time
** initialization happens in an order which is incompatible with our
** preferred ranking, making it otherwise more invasive to tell the
** internals "the --skin flag ranks higher than a URL parameter" (the
** former gets initialized before both URL parameters and the /draft
** path determination).
**
** The rankings were initially defined in
** https://fossil-scm.org/forum/forumpost/caf8c9a8bb
** but where subsequently revised:
**
** 0) A skin name matching the glob pattern "draft[1-9]" at the start of
**    the PATH_INFO.
**
** 1) The --skin flag for commands like "fossil ui", "fossil server", or
**    "fossil http", or  the "skin:" CGI config setting.
**
** 2) The "skin" display setting cookie or URL argument, in that
**    order. If the "skin" URL argument is provided and refers to a legal
**    skin then that will update the display cookie. If the skin name is
**    illegal it is silently ignored.
**
** 3) The built-in skin identfied by the "default-skin" setting, if such
**    a setting exists and matches one of the built-in skin names.
**
** 4) Skin properties (settings "css", "details", "footer", "header",
**    and "js") from the CONFIG db table
**
** 5) The built-in skin named "default"
**
** The iSource integer privides additional detail about where the skin
**
** As a special case, a NULL or empty name resets zAltSkinDir and
** pAltSkin to 0 to indicate that the current config-side skin should
** be used (rank 3, above), then returns 0.
*/
char *skin_use_alternative(const char *zName, int rank, int iSource){
  int i;
  Blob err = BLOB_INITIALIZER;
  if(rank > nSkinRank) return 0;
  nSkinRank = rank;
  if( zName && 1==rank && strchr(zName, '/')!=0 ){
    zAltSkinDir = fossil_strdup(zName);
    iSkinSource = iSource;
    return 0;
  }
  if( zName && sqlite3_strglob("draft[1-9]", zName)==0 ){
    skin_use_draft(zName[5] - '0');
    iSkinSource = iSource;
    return 0;
  }
  if(!zName || !*zName){
    pAltSkin = 0;
    zAltSkinDir = 0;
    return 0;
  }
  if( fossil_strcmp(zName, "custom")==0 ){
    pAltSkin = 0;
    zAltSkinDir = 0;
    iSkinSource = iSource;
    return 0;
  }
  for(i=0; i<count(aBuiltinSkin); i++){
    if( fossil_strcmp(aBuiltinSkin[i].zLabel, zName)==0 ){
      pAltSkin = &aBuiltinSkin[i];
      iSkinSource = iSource;
      return 0;
    }
  }
  blob_appendf(&err, "available skins: %s", aBuiltinSkin[0].zLabel);
  for(i=1; i<count(aBuiltinSkin); i++){
    blob_append(&err, " ", 1);
    blob_append(&err, aBuiltinSkin[i].zLabel, -1);
  }
  return blob_str(&err);
}

/*
** Look for the --skin command-line option and process it.  Or
** call fossil_fatal() if an unknown skin is specified.
**
** This routine is called during command-line parsing for commands
** like "fossil ui" and "fossil http".
*/
void skin_override(void){
  const char *zSkin = find_option("skin",0,1);
  if( zSkin ){
    char *zErr = skin_use_alternative(zSkin, 1, SKIN_FROM_CMDLINE);
    if( zErr ) fossil_fatal("%s", zErr);
  }
}

/*
** Use one of the draft skins.
*/
void skin_use_draft(int i){
  iDraftSkin = i;
  iSkinSource = SKIN_FROM_DRAFT;
}

/*
** The following routines return the various components of the skin
** that should be used for the current run.
**
** zWhat is one of:  "css", "header", "footer", "details", "js"
*/
const char *skin_get(const char *zWhat){
  const char *zOut;
  char *z;
  if( iDraftSkin ){
    z = mprintf("draft%d-%s", iDraftSkin, zWhat);
    zOut = db_get(z, 0);
    fossil_free(z);
    if( zOut ) return zOut;
  }
  if( zAltSkinDir ){
    char *z = mprintf("%s/%s.txt", zAltSkinDir, zWhat);
    if( file_isfile(z, ExtFILE) ){
      Blob x;
      blob_read_from_file(&x, z, ExtFILE);
      fossil_free(z);
      return blob_str(&x);
    }
    fossil_free(z);
  }
  if( iSkinSource==SKIN_FROM_UNKNOWN ){
    const char *zDflt = db_get("default-skin", 0);
    iSkinSource = SKIN_FROM_DEFAULT;
    if( zDflt!=0 ){
      int i;
      for(i=0; i<count(aBuiltinSkin); i++){
        if( fossil_strcmp(aBuiltinSkin[i].zLabel, zDflt)==0 ){
          pAltSkin = &aBuiltinSkin[i];
          iSkinSource = SKIN_FROM_SETTING;
          break;
        }
      }
    }
  }
  if( pAltSkin ){
    z = mprintf("skins/%s/%s.txt", pAltSkin->zLabel, zWhat);
    zOut = builtin_text(z);
    fossil_free(z);
  }else{
    zOut = db_get(zWhat, 0);
    if( zOut==0 ){
      z = mprintf("skins/default/%s.txt", zWhat);
      zOut = builtin_text(z);
      fossil_free(z);
    }else if( iSkinSource==SKIN_FROM_DEFAULT ){
      iSkinSource = SKIN_FROM_CUSTOM;
    }
  }
  return zOut;
}

/*
** Return the command-line option used to set the skin, or return NULL
** if the default skin is being used.
*/
const char *skin_in_use(void){
  if( zAltSkinDir ) return zAltSkinDir;
  if( pAltSkin ) return pAltSkin->zLabel;
  return 0;
}

/*
** Return a pointer to a SkinDetail element.  Return 0 if not found.
*/
static struct SkinDetail *skin_detail_find(const char *zName){
  int lwr = 0;
  int upr = count(aSkinDetail);
  while( upr>=lwr ){
    int mid = (upr+lwr)/2;
    int c = fossil_strcmp(aSkinDetail[mid].zName, zName);
    if( c==0 ) return &aSkinDetail[mid];
    if( c<0 ){
      lwr = mid+1;
    }else{
      upr = mid-1;
    }
  }
  return 0;
}

/* Initialize the aSkinDetail array using the text in the details.txt
** file.
*/
static void skin_detail_initialize(void){
  static int isInit = 0;
  char *zDetail;
  Blob detail, line, key, value;
  if( isInit ) return;
  isInit = 1;
  zDetail = (char*)skin_get("details");
  if( zDetail==0 ) return;
  zDetail = fossil_strdup(zDetail);
  blob_init(&detail, zDetail, -1);
  while( blob_line(&detail, &line) ){
    char *zKey;
    int nKey;
    struct SkinDetail *pDetail;
    if( !blob_token(&line, &key) ) continue;
    zKey = blob_buffer(&key);
    if( zKey[0]=='#' ) continue;
    nKey = blob_size(&key);
    if( nKey<2 ) continue;
    if( zKey[nKey-1]!=':' ) continue;
    zKey[nKey-1] = 0;
    pDetail = skin_detail_find(zKey);
    if( pDetail==0 ) continue;
    if( !blob_token(&line, &value) ) continue;
    pDetail->zValue = fossil_strdup(blob_str(&value));
  }
  blob_reset(&detail);
  fossil_free(zDetail);
}

/*
** Return a skin detail setting
*/
const char *skin_detail(const char *zName){
  struct SkinDetail *pDetail;
  skin_detail_initialize();
  pDetail = skin_detail_find(zName);
  if( pDetail==0 ) fossil_fatal("no such skin detail: %s", zName);
  return pDetail->zValue;
}
int skin_detail_boolean(const char *zName){
  return !is_false(skin_detail(zName));
}

/*
** Hash function for computing a skin id.
*/
static unsigned int skin_hash(unsigned int h, const char *z){
  if( z==0 ) return h;
  while( z[0] ){
    h = (h<<11) ^ (h<<1) ^ (h>>3) ^ z[0];
    z++;
  }
  return h;
}

/*
** Return an identifier that is (probably) different for every skin
** but that is (probably) the same if the skin is unchanged.  This
** identifier can be attached to resource URLs to force reloading when
** the resources change but allow the resources to be read from cache
** as long as they are unchanged.
**
** The zResource argument is the name of a CONFIG setting that
** defines the resource.  Examples:  "css", "logo-image".
*/
unsigned int skin_id(const char *zResource){
  unsigned int h = 0;
  if( zAltSkinDir ){
    h = skin_hash(0, zAltSkinDir);
  }else if( pAltSkin ){
    h = skin_hash(0, pAltSkin->zLabel);
  }else{
    char *zMTime = db_get_mtime(zResource, 0, 0);
    h = skin_hash(0, zMTime);
    fossil_free(zMTime);
  }

  /* Change the ID every time Fossil is recompiled */
  h = skin_hash(h, fossil_exe_id());
  return h;
}

/*
** For a skin named zSkinName, compute the name of the CONFIG table
** entry where that skin is stored and return it.
**
** Return NULL if zSkinName is NULL or an empty string.
**
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    free(z);
    z = 0;
  }
  return z;
}

/*
** Return true if there exists a skin name "zSkinName".
*/
static int skinExists(const char *zSkinName){
  int i;
** Construct and return a string that represents the current skin if
** useDefault==0 or a string for the default skin if useDefault==1.
  if( zSkinName==0 ) return 0;
  for(i=0; i<count(aBuiltinSkin); i++){
    if( fossil_strcmp(zSkinName, aBuiltinSkin[i].zDesc)==0 ) return 1;
  }
  return db_exists("SELECT 1 FROM config WHERE name='skin:%q'", zSkinName);
}

/*
** Construct and return an string of SQL statements that represents
** a "skin" setting.  If zName==0 then return the skin currently
** installed.  Otherwise, return one of the built-in skins designated
** by zName.
**
** Memory to hold the returned string is obtained from malloc.
*/
static char *getSkin(int useDefault){
static char *getSkin(const char *zName){
  const char *z;
  char *zLabel;
  int i;
  Blob val;
  blob_zero(&val);
  blob_appendf(&val, "REPLACE INTO config VALUES('css',%Q);\n",
     useDefault ? zDefaultCSS : db_get("css", (char*)zDefaultCSS)
  );
  blob_appendf(&val, "REPLACE INTO config VALUES('header',%Q);\n",
  for(i=0; i<count(azSkinFile); i++){
    if( zName ){
      zLabel = mprintf("skins/%s/%s.txt", zName, azSkinFile[i]);
      z = builtin_text(zLabel);
      fossil_free(zLabel);
    }else{
      z = db_get(azSkinFile[i], 0);
      if( z==0 ){
        zLabel = mprintf("skins/default/%s.txt", azSkinFile[i]);
        z = builtin_text(zLabel);
        fossil_free(zLabel);
      }
    }
    db_unprotect(PROTECT_CONFIG);
    blob_appendf(&val,
     useDefault ? zDefaultHeader : db_get("header", (char*)zDefaultHeader)
  );
  blob_appendf(&val, "REPLACE INTO config VALUES('footer',%Q);\n",
       "REPLACE INTO config(name,value,mtime) VALUES(%Q,%Q,now());\n",
     useDefault ? zDefaultFooter : db_get("footer", (char*)zDefaultFooter)
  );
       azSkinFile[i], z
    );
    db_protect_pop();
  }
  return blob_str(&val);
}

/*
** Respond to a Rename button press.  Return TRUE if a dialog was painted.
** Return FALSE to continue with the main Skins page.
*/
static int skinRename(void){
  const char *zOldName;
  const char *zNewName;
  int ex = 0;
  if( P("rename")==0 ) return 0;
  zOldName = P("sn");
  zNewName = P("newname");
  if( zOldName==0 ) return 0;
  if( zNewName==0 || zNewName[0]==0 || (ex = skinExists(zNewName))!=0 ){
    if( zNewName==0 ) zNewName = zOldName;
    style_set_current_feature("skins");
    style_header("Rename A Skin");
    if( ex ){
      @ <p><span class="generalError">There is already another skin
      @ named "%h(zNewName)".  Choose a different name.</span></p>
    }
    @ <form action="%R/setup_skin_admin" method="post"><div>
    @ <table border="0"><tr>
    @ <tr><td align="right">Current name:<td align="left"><b>%h(zOldName)</b>
    @ <tr><td align="right">New name:<td align="left">
    @ <input type="text" size="35" name="newname" value="%h(zNewName)">
    @ <tr><td><td>
    @ <input type="hidden" name="sn" value="%h(zOldName)">
    @ <input type="submit" name="rename" value="Rename">
    @ <input type="submit" name="canren" value="Cancel">
    @ </table>
    login_insert_csrf_secret();
    @ </div></form>
    style_finish_page();
    return 1;
  }
  db_unprotect(PROTECT_CONFIG);
  db_multi_exec(
    "UPDATE config SET name='skin:%q' WHERE name='skin:%q';",
    zNewName, zOldName
  );
  db_protect_pop();
  return 0;
}
** Construct the default skin string and fill in the corresponding
** entry in aBuildinSkin[]

/*
** Respond to a Save button press.  Return TRUE if a dialog was painted.
** Return FALSE to continue with the main Skins page.
*/
static int skinSave(const char *zCurrent){
  const char *zNewName;
  int ex = 0;
  if( P("save")==0 ) return 0;
  zNewName = P("svname");
  if( zNewName && zNewName[0]!=0 ){
  }
  if( zNewName==0 || zNewName[0]==0 || (ex = skinExists(zNewName))!=0 ){
    if( zNewName==0 ) zNewName = "";
    style_set_current_feature("skins");
    style_header("Save Current Skin");
    if( ex ){
      @ <p><span class="generalError">There is already another skin
      @ named "%h(zNewName)".  Choose a different name.</span></p>
    }
    @ <form action="%R/setup_skin_admin" method="post"><div>
    @ <table border="0"><tr>
    @ <tr><td align="right">Name for this skin:<td align="left">
    @ <input type="text" size="35" name="svname" value="%h(zNewName)">
    @ <tr><td><td>
    @ <input type="submit" name="save" value="Save">
    @ <input type="submit" name="cansave" value="Cancel">
    @ </table>
    login_insert_csrf_secret();
    @ </div></form>
    style_finish_page();
    return 1;
  }
  db_unprotect(PROTECT_CONFIG);
  db_multi_exec(
    "INSERT OR IGNORE INTO config(name, value, mtime)"
    "VALUES('skin:%q',%Q,now())",
    zNewName, zCurrent
  );
  db_protect_pop();
  return 0;
}

/*
** Return true if a custom skin exists
*/
static int skin_exists_custom(void){
  return db_exists("SELECT 1 FROM config WHERE name IN"
                        " ('css','details','footer','header','js')");
}

static void skin_publish(int);  /* Forward reference */

/*
** WEBPAGE: setup_skin_admin
**
** Administrative actions on skins.  For administrators only.
*/
void setup_skin_admin(void){
  const char *z;
  char *zName;
  char *zErr = 0;
  const char *zCurrent = 0;  /* Current skin */
  int i;                     /* Loop counter */
  Stmt q;
  int once;
  const char *zOverride = 0;
  const char *zDfltSkin = 0;
  int seenDefault = 0;
  int hasCustom;

  login_check_credentials();
  if( !g.perm.Admin ){
    login_needed(0);
    return;
  }
  db_begin_transaction();
  zCurrent = getSkin(0);
  for(i=0; i<count(aBuiltinSkin); i++){
    aBuiltinSkin[i].zSQL = getSkin(aBuiltinSkin[i].zLabel);
  }

  style_set_current_feature("skins");

  if( cgi_csrf_safe(2) ){
    /* Process requests to delete a user-defined skin */
    if( P("del1") && P("sn")!=0 ){
      style_header("Confirm Custom Skin Delete");
      @ <form action="%R/setup_skin_admin" method="post"><div>
      @ <p>Deletion of a custom skin is a permanent action that cannot
      @ be undone.  Please confirm that this is what you want to do:</p>
      @ <input type="hidden" name="sn" value="%h(P("sn"))">
      @ <input type="submit" name="del2" value="Confirm - Delete The Skin">
      @ <input type="submit" name="cancel" value="Cancel - Do Not Delete">
      login_insert_csrf_secret();
      @ </div></form>
      style_finish_page();
      db_end_transaction(1);
      return;
    }
    if( P("del2")!=0 ){
      db_unprotect(PROTECT_CONFIG);
      if( fossil_strcmp(P("sn"),"custom")==0 ){
        db_multi_exec("DELETE FROM config WHERE name IN" 
                      "('css','details','footer','header','js')");
      }else if( (zName = skinVarName(P("sn"), 1))!=0 ){
        db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
      }
      db_protect_pop();
    }
    if( P("draftdel")!=0 ){
      const char *zDraft = P("name");
      if( sqlite3_strglob("draft[1-9]",zDraft)==0 ){
        db_unprotect(PROTECT_CONFIG);
        db_multi_exec("DELETE FROM config WHERE name GLOB '%q-*'", zDraft);
        db_protect_pop();
      }
    }
    if( P("editdraft")!=0 ){
      db_end_transaction(0);
      cgi_redirectf("%R/setup_skin");
      return;
    }
    if( skinRename() || skinSave(zCurrent) ){
      db_end_transaction(0);
      return;
    }

    if( P("setdflt") && (z = P("bisl"))!=0 ){
      if( z[0] ){
        db_set("default-skin", z, 0);
      }else{
        db_unset("default-skin", 0);
      }
      db_end_transaction(0);
      cgi_redirectf("%R/setup_skin_admin");
      return;
    }

    /* The user pressed one of the "Install" buttons. */
    if( P("load") && (z = P("sn"))!=0 && z[0] ){
      int seen = 0;

      /* Check to see if the current skin is already saved.  If it is, there
      ** is no need to create a backup */
      hasCustom = skin_exists_custom();
      if( hasCustom ){
        zCurrent = getSkin(0);
        for(i=0; i<count(aBuiltinSkin); i++){
          if( fossil_strcmp(aBuiltinSkin[i].zSQL, zCurrent)==0 ){
            seen = 1;
            break;
          }
        }
        if( !seen ){
          seen = db_exists("SELECT 1 FROM config WHERE name GLOB 'skin:*'"
                           " AND value=%Q", zCurrent);
          if( !seen ){
            db_unprotect(PROTECT_CONFIG);
            db_multi_exec(
              "INSERT INTO config(name,value,mtime) VALUES("
              "  strftime('skin:Backup On %%Y-%%m-%%d %%H:%%M:%%S'),"
              "  %Q,now())", zCurrent
            );
            db_protect_pop();
          }
        }
      }
      seen = 0;
      if( z[0]>='1' && z[0]<='9' && z[1]==0 ){
        skin_publish(z[0]-'0');
        seen = 1;
      }
      for(i=0; seen==0 && i<count(aBuiltinSkin); i++){
        if( fossil_strcmp(aBuiltinSkin[i].zDesc, z)==0 ){
          seen = 1;
          zCurrent = aBuiltinSkin[i].zSQL;
          db_unprotect(PROTECT_CONFIG);
          db_multi_exec("%s", zCurrent/*safe-for-%s*/);
          db_protect_pop();
          break;
        }
      }
      if( !seen ){
        zName = skinVarName(z,0);
        zCurrent = db_get(zName, 0);
        db_unprotect(PROTECT_CONFIG);
        db_multi_exec("%s", zCurrent/*safe-for-%s*/);
        db_protect_pop();
      }
    }
  }

  zDfltSkin = db_get("default-skin",0);
  hasCustom = skin_exists_custom();
  if( !hasCustom && zDfltSkin==0 ){
    zDfltSkin = "default";
  }

  style_header("Skins");
  if( zErr ){
    @ <p style="color:red">%h(zErr)</p>
  }
  @ <table border="0">
  @ <tr><td colspan=4><h2>Built-in Skins:</h2></td></tr>
  for(i=0; i<count(aBuiltinSkin); i++){
    z = aBuiltinSkin[i].zDesc;
    @ <tr><td>%d(i+1).<td>%h(z)<td>&nbsp;&nbsp;<td>
    @ <form action="%R/setup_skin_admin" method="POST">
    login_insert_csrf_secret();
    if( zDfltSkin==0 || fossil_strcmp(aBuiltinSkin[i].zLabel, zDfltSkin)!=0 ){
                                /* vvvv--- mnemonic: Built-In Skin Label */
      @ <input type="hidden" name="bisl" value="%h(aBuiltinSkin[i].zLabel)">
      @ <input type="submit" name="setdflt" value="Set">
    }else{
      @ (Selected)
      seenDefault = 1;
    }
    if( pAltSkin==&aBuiltinSkin[i] && iSkinSource!=SKIN_FROM_SETTING ){
      @ (Override)
      zOverride = z;
    }
    @ </form></td></tr>
  }
  if( zOverride ){
    @ <tr><td>&nbsp;<td colspan="3">
    @ <p>Note: Built-in skin "%h(zOverride)" is currently being used because of
    switch( iSkinSource ){
      case SKIN_FROM_CMDLINE:
        @ the --skin command-line option.
        break;
      case SKIN_FROM_CGI:
        @ the "skin:" option on CGI script.
        break;
      case SKIN_FROM_QPARAM:
        @ the "skin=NAME" query parameter.
        break;
      case SKIN_FROM_COOKIE:
        @ the "skin" value of the 
        @ <a href='./fdscookie'>fossil_display_setting</a> cookie.
        break;
      case SKIN_FROM_SETTING:
        @ the "default-skin" setting.
        break;
      default:
        @ reasons unknown.  (Fix me!)
        break;
    }
    @ </tr>
  }
  i++;
  @ <tr><td colspan=4><h2>Custom skin:</h2></td></tr>
  @ <tr><td>%d(i).
  if( hasCustom ){
    @ <td>Custom<td>&nbsp;&nbsp;<td>
  }else{
    @ <td><i>(None)</i><td>&nbsp;&nbsp;<td>
  }
  @ <form method="post">
  login_insert_csrf_secret();
  if( hasCustom ){
    @ <input type="submit" name="save" value="Backup">
    @ <input type="submit" name="editdraft" value="Edit">
    if( !seenDefault ){
      @ (Selected)
    }else{
      @ <input type="hidden" name="bisl" value="">
      @ <input type="submit" name="setdflt" value="Set">
      @ <input type="submit" name="del1" value="Delete">
      @ <input type="hidden" name="sn" value="custom">
    }
  }else{
    @ <input type="submit" name="editdraft" value="Create">
  }
  @ </form>
  @ </td></tr>
  db_prepare(&q,
     "SELECT substr(name, 6) FROM config"
     " WHERE name GLOB 'skin:*'"
     " ORDER BY name"
  );
  once = 1;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zN = db_column_text(&q, 0);
    i++;
    if( once ){
      once = 0;
      @ <tr><td colspan=4><h2>Backups of past custom skins:</h2></td></tr>
    }
    @ <tr><td>%d(i).<td>%h(zN)<td>&nbsp;&nbsp;<td>
    @ <form action="%R/setup_skin_admin" method="post">
    login_insert_csrf_secret();
    @ <input type="submit" name="load" value="Install">
    @ <input type="submit" name="del1" value="Delete">
    @ <input type="submit" name="rename" value="Rename">
    @ <input type="hidden" name="sn" value="%h(zN)">
    @ </form></tr>
  }
  db_finalize(&q);
  db_prepare(&q,
     "SELECT DISTINCT substr(name, 1, 6) FROM config"
     " WHERE name GLOB 'draft[1-9]-*'"
     " ORDER BY name"
  );
  once = 1;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zN = db_column_text(&q, 0);
    i++;
    if( once ){
      once = 0;
      @ <tr><td colspan=4><h2>Draft skins:</h2></td></tr>
    }
    @ <tr><td>%d(i).<td>%h(zN)<td>&nbsp;&nbsp;<td>
    @ <form action="%R/setup_skin_admin" method="post">
    login_insert_csrf_secret();
    @ <input type="submit" name="load" value="Install">
    @ <input type="submit" name="draftdel" value="Delete">
    @ <input type="hidden" name="name" value="%h(zN)">
    @ <input type="hidden" name="sn" value="%h(zN+5)">
    @ </form></tr>
  }
  db_finalize(&q);

  @ </table>
  style_finish_page();
  db_end_transaction(0);
}

/*
** Generate HTML for a <select> that lists all the available skin names,
** except for zExcept if zExcept!=NULL.
*/
static void skin_emit_skin_selector(
  const char *zVarName,      /* Variable name for the <select> */
  const char *zDefault,      /* The default value, if not NULL */
  const char *zExcept        /* Omit this skin if not NULL */
){
  int i;
  Stmt s;
  @ <select size='1' name='%s(zVarName)'>
  if( fossil_strcmp(zExcept, "current")!=0 && skin_exists_custom() ){
    @ <option value='current'>Current Custom Skin</option>
  }
  for(i=0; i<count(aBuiltinSkin); i++){
    const char *zName = aBuiltinSkin[i].zLabel;
    if( fossil_strcmp(zName, zExcept)==0 ) continue;
    if( fossil_strcmp(zDefault, zName)==0 ){
      @ <option value='%s(zName)' selected>\
      @ %h(aBuiltinSkin[i].zDesc)</option>
    }else{
      @ <option value='%s(zName)'>\
      @ %h(aBuiltinSkin[i].zDesc)</option>
    }
  }
  db_prepare(&s, "SELECT DISTINCT substr(name,1,6) FROM config"
                 " WHERE name GLOB 'draft[1-9]-*' ORDER BY 1");
  while( db_step(&s)==SQLITE_ROW ){
    const char *zName = db_column_text(&s, 0);
    if( fossil_strcmp(zName, zExcept)==0 ) continue;
    if( fossil_strcmp(zDefault, zName)==0 ){
      @ <option value='%s(zName)' selected>%s(zName)</option>
    }else{
      @ <option value='%s(zName)'>%s(zName)</option>
    }
  }
  db_finalize(&s);
  @ </select>
}

/*
** Return the text of one of the skin files.
*/
static const char *skin_file_content(const char *zLabel, const char *zFile){
  const char *zResult;
  if( fossil_strcmp(zLabel, "current")==0 ){
    zResult = skin_get(zFile);
  }else if( sqlite3_strglob("draft[1-9]", zLabel)==0 ){
    zResult = db_get_mprintf("", "%s-%s", zLabel, zFile);
  }else{
    int i;
    for(i=0; i<2; i++){
      char *zKey = mprintf("skins/%s/%s.txt", zLabel, zFile);
      zResult = builtin_text(zKey);
      fossil_free(zKey);
      if( zResult!=0 ) break;
      zLabel = "default";
    }
  }
  return zResult;
}

extern const struct strctCssDefaults {
/* From the generated default_css.h, which we cannot #include here
** without causing an ODR violation.
*/
  const char *elementClass;  /* Name of element needed */
  const char *value;         /* CSS text */
} cssDefaultList[];

/*
** WEBPAGE: setup_skinedit
**
** Edit aspects of a skin determined by the w= query parameter.
** Requires Admin or Setup privileges.
**
**    w=NUM     -- 0=CSS, 1=footer, 2=header, 3=details, 4=js
**    sk=NUM    -- the draft skin number
*/
void setup_skinedit(void){
  static const struct sSkinAddr {
    const char *zFile;
    const char *zTitle;
    const char *zSubmenu;
  } aSkinAttr[] = {
    /* 0 */ { "css",     "CSS",             "CSS",     },
    /* 1 */ { "footer",  "Page Footer",     "Footer",  },
    /* 2 */ { "header",  "Page Header",     "Header",  },
    /* 3 */ { "details", "Display Details", "Details", },
    /* 4 */ { "js",      "JavaScript",      "Script",  },
  };
  const char *zBasis;         /* The baseline file */
  const char *zOrig;          /* Original content prior to editing */
  const char *zContent;       /* Content after editing */
  const char *zDflt;          /* Default content */
  char *zDraft;               /* Which draft:  "draft%d" */
  char *zTitle;               /* Title of this page */
  const char *zFile;          /* One of "css", "footer", "header", "details" */
  int iSkin;                  /* draft number.  1..9 */
  int ii;                     /* Index in aSkinAttr[] of this file */
  int j;                      /* Loop counter */
  int isRevert = 0;           /* True if Revert-to-Baseline was pressed */

  login_check_credentials();

  /* Figure out which skin we are editing */
  iSkin = atoi(PD("sk","1"));
  if( iSkin<1 || iSkin>9 ) iSkin = 1;

  /* Check that the user is authorized to edit this skin. */
  if( !g.perm.Admin ){
    char *zAllowedEditors = "";
    Glob *pAllowedEditors;
    int isMatch = 0;
    if( login_is_individual() ){
      zAllowedEditors = db_get_mprintf("", "draft%d-users", iSkin);
    }
    if( zAllowedEditors[0] ){
      pAllowedEditors = glob_create(zAllowedEditors);
      isMatch = glob_match(pAllowedEditors, g.zLogin);
      glob_free(pAllowedEditors);
    }
    if( isMatch==0 ){
      login_needed(0);
      return;
    }
  }

  /* figure out which file is to be edited */
  ii = atoi(PD("w","0"));
  if( ii<0 || ii>count(aSkinAttr) ) ii = 0;
  zFile = aSkinAttr[ii].zFile;
  zDraft = mprintf("draft%d", iSkin);
  zTitle = mprintf("%s for Draft%d", aSkinAttr[ii].zTitle, iSkin);
  zBasis = PD("basis","current");
  zDflt = skin_file_content(zBasis, zFile);
  zOrig = db_get_mprintf(zDflt, "draft%d-%s",iSkin,zFile);
  zContent = PD(zFile,zOrig);
  if( P("revert")!=0 && cgi_csrf_safe(2) ){
    zContent = zDflt;
    isRevert = 1;
  }

  db_begin_transaction();
  style_set_current_feature("skins");
  style_header("%s", zTitle);
  for(j=0; j<count(aSkinAttr); j++){
    style_submenu_element(aSkinAttr[j].zSubmenu,
          "%R/setup_skinedit?w=%d&basis=%h&sk=%d",j,zBasis,iSkin);
  }
  @ <form action="%R/setup_skinedit" method="post"><div>
  login_insert_csrf_secret();
  @ <input type='hidden' name='w' value='%d(ii)'>
  @ <input type='hidden' name='sk' value='%d(iSkin)'>
  @ <h2>Edit %s(zTitle):</h2>
  if( P("submit") && cgi_csrf_safe(2)
   && (zOrig==0 || strcmp(zOrig,zContent)!=0)
  ){
    db_set_mprintf(zContent, 0, "draft%d-%s",iSkin,zFile);
  }
  @ <textarea name="%s(zFile)" rows="10" cols="80">\
  @ %h(zContent)</textarea>
  @ <br>
  @ <input type="submit" name="submit" value="Apply Changes">
  if( isRevert ){
    @ &larr; Press to complete reversion to "%s(zBasis)"
  }else if( fossil_strcmp(zContent,zDflt)!=0 ){
    @ <input type="submit" name="revert" value='Revert To "%s(zBasis)"'>
  }
  @ <hr>
  @ Baseline: \
  skin_emit_skin_selector("basis", zBasis, zDraft);
  @ <input type="submit" name="diff" value="Unified Diff">
  @ <input type="submit" name="sbsdiff" value="Side-by-Side Diff">
  if( P("diff")!=0 || P("sbsdiff")!=0 ){
    Blob from, to, out;
    DiffConfig DCfg;
    construct_diff_flags(1, &DCfg);
    DCfg.diffFlags |= DIFF_STRIP_EOLCR;
    if( P("sbsdiff")!=0 ) DCfg.diffFlags |= DIFF_SIDEBYSIDE;
    blob_init(&to, zContent, -1);
    blob_init(&from, skin_file_content(zBasis, zFile), -1);
    blob_zero(&out);
    DCfg.diffFlags |= DIFF_HTML | DIFF_NOTTOOBIG;
    if( DCfg.diffFlags & DIFF_SIDEBYSIDE ){
      text_diff(&from, &to, &out, &DCfg);
      @ %s(blob_str(&out))
    }else{
      DCfg.diffFlags |= DIFF_LINENO;
      text_diff(&from, &to, &out, &DCfg);
      @ <pre class="udiff">
      @ %s(blob_str(&out))
      @ </pre>
    }
    blob_reset(&from);
    blob_reset(&to);
    blob_reset(&out);
  }
  @ </div></form>
  style_finish_page();
  db_end_transaction(0);
}

/*
** Try to initialize draft skin iSkin to the built-in or preexisting
** skin named by zTemplate.
*/
static void skin_initialize_draft(int iSkin, const char *zTemplate){
  int i;
  if( zTemplate==0 ) return;
  for(i=0; i<count(azSkinFile); i++){
    const char *z = skin_file_content(zTemplate, azSkinFile[i]);
    db_set_mprintf(z, 0, "draft%d-%s", iSkin, azSkinFile[i]);
  }
}

/*
** Publish the draft skin iSkin as the new default.
*/
static void setDefaultSkin(void){
  aBuiltinSkin[0].zValue = getSkin(1);
}

static void skin_publish(int iSkin){
  char *zCurrent;    /* SQL description of the current skin */
  char *zBuiltin;    /* SQL description of a built-in skin */
  int i;
  int seen = 0;      /* True if no need to make a backup */

  /* Check to see if the current skin is already saved.  If it is, there
  ** is no need to create a backup */
  zCurrent = getSkin(0);
  for(i=0; i<count(aBuiltinSkin); i++){
    zBuiltin = getSkin(aBuiltinSkin[i].zLabel);
    if( fossil_strcmp(zBuiltin, zCurrent)==0 ){
      seen = 1;
      break;
    }
  }
  if( !seen ){
    seen = db_exists("SELECT 1 FROM config WHERE name GLOB 'skin:*'"
                       " AND value=%Q", zCurrent);
  }
  if( !seen ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "INSERT INTO config(name,value,mtime) VALUES("
      "  strftime('skin:Backup On %%Y-%%m-%%d %%H:%%M:%%S'),"
      "  %Q,now())", zCurrent
    );
    db_protect_pop();
  }

  /* Publish draft iSkin */
  for(i=0; i<count(azSkinFile); i++){
    char *zNew = db_get_mprintf("", "draft%d-%s", iSkin, azSkinFile[i]);
    db_set(azSkinFile[i]/*works-like:"x"*/, zNew, 0);
  }
  db_unset("default-skin", 0);
}

/*
** WEBPAGE: setup_skin
**
** Generate a page showing the steps needed to create or edit
** a custom skin.
*/
void setup_skin(void){
  const char *z;
  char *zName;
  char *zErr = 0;
  const char *zCurrent;  /* Current skin */
  int i;          /* Loop counter */
  int iSkin;      /* Which draft skin is being edited */
  int isSetup;    /* True for an administrator */
  int isEditor;   /* Others authorized to make edits */
  char *zAllowedEditors;   /* Who may edit the draft skin */
  char *zBase;             /* Base URL for draft under test */
  static const char *const azTestPages[] = {
  int i;                 /* Loop counter */
  Stmt q;

  login_check_credentials();
     "home",
     "timeline",
     "dir?ci=tip",
  if( !g.okSetup ){
    login_needed();
  }
     "dir?ci=tip&type=tree",
     "brlist",
     "info/trunk",
  };
  db_begin_transaction();

  /* Process requests to delete a user-defined skin */
  /* Figure out which skin we are editing */
  if( P("del1") && (zName = skinVarName(P("sn"), 1))!=0 ){
    style_header("Confirm Custom Skin Delete");
  iSkin = atoi(PD("sk","1"));
    @ <form action="%s(g.zBaseURL)/setup_skin" method="POST">
    @ <p>Deletion of a custom skin is a permanent action that cannot
    @ be undone.  Please confirm that this is what you want to do:</p>
    @ <input type="hidden" name="sn" value="%h(P("sn"))">
    @ <input type="submit" name="del2" value="Confirm - Delete The Skin">
  if( iSkin<1 || iSkin>9 ) iSkin = 1;

  /* Figure out if the current user is allowed to make administrative
  ** changes and/or edits
    @ <input type="submit" name="cancel" value="Cancel - Do Not Delete">
    login_insert_csrf_secret();
    @ </form>
    style_footer();
  */
  login_check_credentials();
  if( !login_is_individual() ){
    login_needed(0);
    return;
  }
  zAllowedEditors = db_get_mprintf("", "draft%d-users", iSkin);
  if( g.perm.Admin ){
    isSetup = isEditor = 1;
  }else{
    Glob *pAllowedEditors;
    isSetup = isEditor = 0;
    if( zAllowedEditors[0] ){
      pAllowedEditors = glob_create(zAllowedEditors);
      isEditor = glob_match(pAllowedEditors, g.zLogin);
      glob_free(pAllowedEditors);
    }
  }
  if( P("del2")!=0 && (zName = skinVarName(P("sn"), 1))!=0 ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);

  /* Initialize the skin, if requested and authorized. */
  if( P("init3")!=0 && isEditor ){
    skin_initialize_draft(iSkin, P("initskin"));
  }
  if( P("submit2")!=0 && isSetup ){
    db_set_mprintf(PD("editors",""), 0, "draft%d-users", iSkin);
    zAllowedEditors = db_get_mprintf("", "draft%d-users", iSkin);
  }

  /* Publish the draft skin */
  if( P("pub7")!=0 && PB("pub7ck1") && PB("pub7ck2") ){
    skin_publish(iSkin);
  }

  style_set_current_feature("skins");
  setDefaultSkin();
  zCurrent = getSkin(0);

  style_header("Customize Skin");
  if( g.perm.Admin ){
    style_submenu_element("Skin-Admin", "%R/setup_skin_admin");
  }

  @ <p>Customize the look of this Fossil repository by making changes
  @ to the CSS, Header, Footer, and Detail Settings in one of nine "draft"
  @ configurations.  Then, after verifying that all is working correctly,
  @ publish the draft to become the new main Skin. Users can select a skin
  @ of their choice from the built-in ones or the locally-edited one via
  @ <a href='%R/skins'>the /skins page</a>.</p>
  @
  if( P("save")!=0 && (zName = skinVarName(P("save"),0))!=0 ){
    if( db_exists("SELECT 1 FROM config WHERE name=%Q", zName)
          || strcmp(zName, "Default")==0 ){
      zErr = mprintf("Skin name \"%h\" already exists. "
  @ <a name='step1'></a>
  @ <h1>Step 1: Identify Which Draft To Use</h1>
  @
  @ <p>The main skin of Fossil cannot be edited directly.  Instead,
  @ edits are made to one of nine draft skins.  A draft skin can then
  @ be published to become the default skin.
  @ Nine separate drafts are available to facilitate A/B testing.</p>
  @
  @ <form method='POST' action='%R/setup_skin#step2' id='f01'>
  @ <p class='skinInput'>Draft skin to edit:
  @ <select size='1' name='sk' id='skStep1'>
  for(i=1; i<=9; i++){
    if( i==iSkin ){
                     "Choose a different name.", P("sn"));
      @ <option value='%d(i)' selected>draft%d(i)</option>
    }else{
      db_multi_exec("INSERT INTO config VALUES(%Q,%Q)",
         zName, zCurrent
      );
      @ <option value='%d(i)'>draft%d(i)</option>
    }
  }
  @ </select>
  @ </p>
  @ </form>
  @
  @ <a name='step2'></a>
  @ <h1>Step 2: Authenticate</h1>
  @
  if( isSetup ){
    @ <p>As an administrator, you can make any edits you like to this or
    @ any other skin.  You can also authorize other users to edit this
    @ skin.  Any user whose login name matches the comma-separated list
    @ of GLOB expressions below is given special permission to edit
    @ the draft%d(iSkin) skin:
    @
    @ <form method='POST' action='%R/setup_skin#step2' id='f02'>

  /* The user pressed the "Use This Skin" button. */
  if( P("load") && (z = P("sn"))!=0 && z[0] ){
    int seen = 0;
    for(i=0; i<sizeof(aBuiltinSkin)/sizeof(aBuiltinSkin[0]); i++){
      if( strcmp(aBuiltinSkin[i].zValue, zCurrent)==0 ){
        seen = 1;
        break;
      }
    }
    if( !seen ){
      seen = db_exists("SELECT 1 FROM config WHERE name GLOB 'skin:*'"
                       " AND value=%Q", zCurrent);
    }
    if( !seen ){
      db_multi_exec(
    @ <p class='skinInput'>
    @ <input type='hidden' name='sk' value='%d(iSkin)'>
    @ Authorized editors for skin draft%d(iSkin):
    @ <input type='text' name='editors' value='%h(zAllowedEditors)'\
    @  width='40'>
    @ <input type='submit' name='submit2' value='Change'>
    @ </p>
    @ </form>
  }else if( isEditor ){
    @ <p>You are authorized to make changes to the draft%d(iSkin) skin.
    @ Continue to the <a href='#step3'>next step</a>.</p>
  }else{
    @ <p>You are not authorized to make changes to the draft%d(iSkin)
    @ skin.  Contact the administrator of this Fossil repository for
    @ further information.</p>
  }
  @
  @ <a name='step3'></a>
  @ <h1>Step 3: Initialize The Draft</h1>
  @
  if( !isEditor ){
    @ <p>You are not allowed to initialize draft%d(iSkin).  Contact
    @ the administrator for this repository for more information.
  }else{
    char *zDraft = mprintf("draft%d", iSkin);
    @ <p>Initialize the draft%d(iSkin) skin to one of the built-in skins
    @ or a preexisting skin, to use as a baseline.</p>
    @
    @ <form method='POST' action='%R/setup_skin#step4' id='f03'>
    @ <p class='skinInput'>
    @ <input type='hidden' name='sk' value='%d(iSkin)'>
    @ Initialize skin <b>draft%d(iSkin)</b> using
    skin_emit_skin_selector("initskin", 0, zDraft);
    fossil_free(zDraft);
    @ <input type='submit' name='init3' value='Go'>
    @ </p>
    @ </form>
  }
  @
  @ <a name='step4'></a>
  @ <h1>Step 4: Make Edits</h1>
  @
  if( !isEditor ){
    @ <p>You are not authorized to make edits to the draft%d(iSkin) skin.
    @ Contact the administrator of this Fossil repository for help.</p>
  }else{
    @ <p>Edit the components of the draft%d(iSkin) skin:
    @ <ul>
        "INSERT INTO config VALUES("
        "  strftime('skin:Backup On %%Y-%%m-%%d %%H:%%M:%%S'),"
        "  %Q)", zCurrent
      );
    }
    seen = 0;
    @ <li><a href='%R/setup_skinedit?w=0&sk=%d(iSkin)' target='_blank'>CSS</a>
    @ <li><a href='%R/setup_skinedit?w=2&sk=%d(iSkin)' target='_blank'>\
    @ Header</a>
    @ <li><a href='%R/setup_skinedit?w=1&sk=%d(iSkin)' target='_blank'>\
    @ Footer</a>
    @ <li><a href='%R/setup_skinedit?w=3&sk=%d(iSkin)' target='_blank'>\
    @ Details</a>
    @ <li><a href='%R/setup_skinedit?w=4&sk=%d(iSkin)' target='_blank'>\
    @ Javascript</a> (optional)
    @ </ul>
  }
  @
  @ <a name='step5'></a>
  @ <h1>Step 5: Verify The Draft Skin</h1>
  @
  @ <p>To test this draft skin, insert text "/draft%d(iSkin)/" just before the
  @ operation name in the URL.  Here are a few links to try:
  @ <ul>
    for(i=0; i<sizeof(aBuiltinSkin)/sizeof(aBuiltinSkin[0]); i++){
      if( strcmp(aBuiltinSkin[i].zName, z)==0 ){
        seen = 1;
        zCurrent = aBuiltinSkin[i].zValue;
  if( iDraftSkin && sqlite3_strglob("*/draft[1-9]", g.zBaseURL)==0 ){
    zBase = mprintf("%.*s/draft%d", (int)strlen(g.zBaseURL)-7,g.zBaseURL,iSkin);
  }else{
    zBase = mprintf("%s/draft%d", g.zBaseURL, iSkin);
        db_multi_exec("%s", zCurrent);
        break;
      }
    }
    if( !seen ){
      zName = skinVarName(z,0);
      zCurrent = db_get(zName, 0);
  }
  for(i=0; i<count(azTestPages); i++){
    @ <li><a href='%s(zBase)/%s(azTestPages[i])' target='_blank'>\
    @ %s(zBase)/%s(azTestPages[i])</a>
  }
  fossil_free(zBase);
  @ </ul>
  @
  @ <p>You will probably need to press Reload on your browser before any
  @ CSS changes will take effect.</p>
  @
  @ <a hame='step6'></a>
  @ <h1>Step 6: Iterate</h1>
  @
  @ <p>Repeat <a href='#step4'>step 4</a> and
  @ <a href='#step5'>step 5</a> as many times as necessary to create
  @ a production-ready skin.
  @
  @ <a name='step7'></a>
      db_multi_exec("%s", zCurrent);
    }
  @ <h1>Step 7: Publish</h1>
  @
  if( !g.perm.Admin ){
    @ <p>Only administrators are allowed to publish draft skins.  Contact
    @ an administrator to get this "draft%d(iSkin)" skin published.</p>
  }else{
  }

    @ <p>When the draft%d(iSkin) skin is ready for production use,
    @ make it the default skin by clicking the acknowledgements and
    @ pressing the button below:</p>
    @
    @ <form method='POST' action='%R/setup_skin#step7'>
    @ <p class='skinInput'>
    @ <input type='hidden' name='sk' value='%d(iSkin)'>
    @ <input type='checkbox' name='pub7ck1' value='yes'>\
    @ Skin draft%d(iSkin) has been tested and found ready for production.<br>
    @ <input type='checkbox' name='pub7ck2' value='yes'>\
    @ The current skin should be overwritten with draft%d(iSkin).<br>
    @ <input type='submit' name='pub7' value='Publish Draft%d(iSkin)'>
    @ </p></form>
    @
    @ <p>You will probably need to press Reload on your browser after
    @ publishing the new skin.</p>
  }
  style_header("Skins");
  @ <p>A "skin" is a combination of
  @ <a href="setup_editcss">CSS</a>, 
  @ <a href="setup_header">Header</a>, and 
  @
  @ <a name='step8'></a>
  @ <h1>Step 8: Cleanup and Undo Actions</h1>
  @ <a href="setup_footer">Footer</a> that determines the look and feel
  @ of the web interface.</p>
  @
  @ <h2>Available Skins:</h2>
  @ <ol>
  if( !g.perm.Admin ){
    @ <p>Administrators can optionally save or restore legacy skins, and/or
    @ undo a prior publish.
  for(i=0; i<sizeof(aBuiltinSkin)/sizeof(aBuiltinSkin[0]); i++){
    z = aBuiltinSkin[i].zName;
    if( strcmp(aBuiltinSkin[i].zValue, zCurrent)==0 ){
      @ <li><p>%h(z).&nbsp;&nbsp; <b>Currently In Use</b></p>
    }else{
      @ <li><form action="%s(g.zBaseURL)/setup_skin" method="POST">
      @ %h(z).&nbsp;&nbsp; 
  }else{
    @ <p>Visit the <a href='%R/setup_skin_admin'>Skin Admin</a> page
    @ for cleanup and recovery actions.
  }
  builtin_request_js("skin.js");
  style_finish_page();
}

      @ <input type="hidden" name="sn" value="%h(z)">
      @ <input type="submit" name="load" value="Use This Skin">
      @ </form></li>
    }
  }
  db_prepare(&q,
/*
** WEBPAGE: skins
**
** Show a list of all of the built-in skins, plus the respository skin,
** and provide the user with an opportunity to change to any of them.
*/
void skins_page(void){
  int i;
  char *zBase = fossil_strdup(g.zTop);
  size_t nBase = strlen(zBase);
  login_check_credentials();
  if( iDraftSkin && sqlite3_strglob("*/draft?", zBase)==0 ){
    nBase -= 7;
    zBase[nBase] = 0;
  }else if( pAltSkin ){
    char *zPattern = mprintf("*/skn_%s", pAltSkin->zLabel);
    if( sqlite3_strglob(zPattern, zBase)==0 ){
      nBase -= strlen(zPattern)-1;
      zBase[nBase] = 0;
    }
    fossil_free(zPattern);
  }
  style_header("Skins");
  if( iDraftSkin || nSkinRank<=1 ){
    @ <p class="warning">Warning:
    if( iDraftSkin>0 ){
      @ you are using a draft skin,
    }else{
      @ this fossil instance was started with a hard-coded skin
      @ value
    }
    @ which supercedes any option selected below. A skin selected
    @ below will be recorded in your 
    @ "%z(href("%R/fdscookie"))fossil_display_settings</a>" cookie
    @ but will not be used so long as the site has a
    @ higher-priority skin in place.
    @ </p>
  }
  @ <p>The following skins are available for this repository:</p>
  @ <ul>
  for(i=0; i<count(aBuiltinSkin); i++){
    if( pAltSkin==&aBuiltinSkin[i] ){
      @ <li> %h(aBuiltinSkin[i].zDesc) &larr; <i>Currently in use</i>
    }else{
      char *zUrl = href("%R/skins?skin=%T", aBuiltinSkin[i].zLabel);
      @ <li> %z(zUrl)%h(aBuiltinSkin[i].zDesc)</a>
    }
  }
  if( skin_exists_custom() ){
    if( pAltSkin==0 && zAltSkinDir==0 && iDraftSkin==0 ){
      @ <li> Custom skin for this repository &larr; <i>Currently in use</i>
    }else{
     "SELECT substr(name, 6), value FROM config"
     " WHERE name GLOB 'skin:*'"
      @ <li> %z(href("%R/skins?skin=custom"))\
     " ORDER BY name"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zN = db_column_text(&q, 0);
    const char *zV = db_column_text(&q, 1);
    if( strcmp(zV, zCurrent)==0 ){
      @ <li><p>%h(zN).&nbsp;&nbsp;  <b>Currently In Use</b></p>
    }else{
      @ Custom skin for this repository</a>
    }
  }
  @ </ul>
  if( iSkinSource<SKIN_FROM_CUSTOM ){
    @ <p>The current skin is selected by
    switch( iSkinSource ){
      case SKIN_FROM_DRAFT:
      @ <li><form action="%s(g.zBaseURL)/setup_skin" method="POST">
      @ %h(zN).&nbsp;&nbsp; 
      @ <input type="hidden" name="sn" value="%h(zN)">
      @ <input type="submit" name="load" value="Use This Skin">
      @ <input type="submit" name="del1" value="Delete This Skin">
      @ </form></li>
         @ the "debugN" prefix on the PATH_INFO portion of the URL.
         break;
      case SKIN_FROM_CMDLINE:
         @ the "--skin" command-line option on the Fossil server.
         break;
      case SKIN_FROM_CGI:
         @ the "skin:" property in the CGI script that runs the Fossil server.
         break;
      case SKIN_FROM_QPARAM:
         @ the "skin=NAME" query parameter on the URL.
         break;
      case SKIN_FROM_COOKIE:
         @ the "skin" property in the
         @ "%z(href("%R/fdscookie"))fossil_display_settings</a>" cookie.
         break;
      case SKIN_FROM_SETTING:
         @ the "default-skin" setting on the repository.
         break;
    }
  }
  if( iSkinSource==SKIN_FROM_COOKIE || iSkinSource==SKIN_FROM_QPARAM ){
    @ <ul>
    @ <li> %z(href("%R/skins?skin="))<i>Let Fossil choose \
  db_finalize(&q);
  @ </ol>
  style_footer();
  db_end_transaction(0);
    @ which skin to use</i></a>
    @ </ul>
  }
  style_finish_page();
  if( P("skin")!=0 ){
    sqlite3_uint64 x;
    sqlite3_randomness(sizeof(x), &x);
    cgi_redirectf("%R/skins/%llx", x);
  }
  fossil_free(zBase);
}
Added src/smtp.c.









































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2018 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** Implementation of SMTP (Simple Mail Transport Protocol) according
** to RFC 5321.
*/
#include "config.h"
#include "smtp.h"
#include <assert.h>
#if (HAVE_DN_EXPAND || HAVE___NS_NAME_UNCOMPRESS || HAVE_NS_NAME_UNCOMPRESS) \
     && (HAVE_NS_PARSERR || HAVE___NS_PARSERR) && !defined(FOSSIL_OMIT_DNS)
#  include <sys/types.h>
#  include <netinet/in.h>
#  if defined(HAVE_BIND_RESOLV_H)
#    include <bind/resolv.h>
#    include <bind/arpa/nameser_compat.h>
#  else
#    include <arpa/nameser.h>
#    include <resolv.h>
#  endif
#  if defined(HAVENS_NAME_UNCOMPRESS) && !defined(dn_expand)
#    define dn_expand ns_name_uncompress
#  endif
#  if defined(HAVE__NS_NAME_UNCOMPRESS) && !defined(dn_expand)
#    define dn_expand __ns_name_uncompress
#  endif
#  define FOSSIL_UNIX_STYLE_DNS 1
#endif
#if defined(_WIN32) && !defined(__MINGW32__) && !defined(__MINGW64__)
#  include <windows.h>
#  include <windns.h>
#  define FOSSIL_WINDOWS_STYLE_DNS 1
#endif


/*
** Find the hostname for receiving email for the domain given
** in zDomain.  Return NULL if not found or not implemented.
** If multiple email receivers are advertized, pick the one with
** the lowest preference number.
**
** The returned string is obtained from fossil_malloc()
** and should be released using fossil_free().
*/
char *smtp_mx_host(const char *zDomain){
#if defined(FOSSIL_UNIX_STYLE_DNS)
  int nDns;                       /* Length of the DNS reply */
  int rc;                         /* Return code from various APIs */
  int i;                          /* Loop counter */
  int iBestPriority = 9999999;    /* Best priority */
  int nRec;                       /* Number of answers */
  ns_msg h;                       /* DNS reply parser */
  const unsigned char *pBest = 0; /* RDATA for the best answer */
  unsigned char aDns[5000];       /* Raw DNS reply content */
  char zHostname[5000];           /* Hostname for the MX */

  nDns = res_query(zDomain, C_IN, T_MX, aDns, sizeof(aDns));
  if( nDns<=0 ) return 0;
  res_init();
  rc = ns_initparse(aDns,nDns,&h);
  if( rc ) return 0;
  nRec = ns_msg_count(h, ns_s_an);
  for(i=0; i<nRec; i++){
    ns_rr x;
    int priority, sz;
    const unsigned char *p;
    rc = ns_parserr(&h, ns_s_an, i, &x);
    if( rc ) continue;
    p = ns_rr_rdata(x);
    sz = ns_rr_rdlen(x);
    if( sz>2 ){
      priority = p[0]*256 + p[1];
      if( priority<iBestPriority ){
        pBest = p;
        iBestPriority = priority;
      }
    }
  }
  if( pBest ){
    dn_expand(aDns, aDns+nDns, pBest+2, zHostname, sizeof(zHostname));
    return fossil_strdup(zHostname);
  }
  return 0;
#elif defined(FOSSIL_WINDOWS_STYLE_DNS)
  DNS_STATUS status;           /* Return status */
  PDNS_RECORDA pDnsRecord, p;  /* Pointer to DNS_RECORD structure */
  int iBestPriority = 9999999; /* Best priority */
  char *pBest = 0;             /* RDATA for the best answer */

  status = DnsQuery_UTF8(zDomain,            /* Domain name */
                         DNS_TYPE_MX,        /* DNS record type */
                         DNS_QUERY_STANDARD, /* Query options */
                         NULL,               /* List of DNS servers */
                         &pDnsRecord,        /* Query results */
                         NULL);              /* Reserved */
  if( status ) return NULL;

  p = pDnsRecord;
  while( p ){
    if( p->Data.MX.wPreference<iBestPriority ){
      iBestPriority = p->Data.MX.wPreference;
      pBest = p->Data.MX.pNameExchange;
    }
    p = p->pNext;
  }
  if( pBest ){
    pBest = fossil_strdup(pBest);
  }
  DnsRecordListFree(pDnsRecord, DnsFreeRecordListDeep);
  return pBest;
#else
  return 0;
#endif /* defined(FOSSIL_WINDOWS_STYLE_DNS) */
}

/*
** COMMAND: test-find-mx
**
** Usage: %fossil test-find-mx DOMAIN ...
**
** Do a DNS MX lookup to find the hostname for sending email for
** DOMAIN.
*/
void test_find_mx(void){
  int i;
  if( g.argc<=2 ){
    usage("DOMAIN ...");
  }
  for(i=2; i<g.argc; i++){
    char *z = smtp_mx_host(g.argv[i]);
    fossil_print("%s: %s\n", g.argv[i], z);
    fossil_free(z);
  }
}

#if INTERFACE
/*
** Information about a single SMTP connection.
*/
struct SmtpSession {
  const char *zFrom;        /* Domain from which we are sending */
  const char *zDest;        /* Domain that will receive the email */
  char *zHostname;          /* Hostname of SMTP server for zDest */
  u32 smtpFlags;            /* Flags changing the operation */
  FILE *logFile;            /* Write session transcript to this log file */
  Blob *pTranscript;        /* Record session transcript here */
  int atEof;                /* True after connection closes */
  char *zErr;               /* Error message */
  Blob inbuf;               /* Input buffer */
};

/* Allowed values for SmtpSession.smtpFlags */
#define SMTP_TRACE_STDOUT   0x00001     /* Debugging info to console */
#define SMTP_TRACE_FILE     0x00002     /* Debugging info to logFile */
#define SMTP_TRACE_BLOB     0x00004     /* Record transcript */
#define SMTP_DIRECT         0x00008     /* Skip the MX lookup */
#define SMTP_PORT           0x00010     /* Use an alternate port number */

#endif

/*
** Shutdown an SmtpSession
*/
void smtp_session_free(SmtpSession *pSession){
  socket_close();
  blob_reset(&pSession->inbuf);
  fossil_free(pSession->zHostname);
  fossil_free(pSession->zErr);
  fossil_free(pSession);
}

/*
** Allocate a new SmtpSession object.
**
** Both zFrom and zDest must be specified.
**
** The ... arguments are in this order:
**
**    SMTP_PORT:            int
**    SMTP_TRACE_FILE:      FILE*
**    SMTP_TRACE_BLOB:      Blob*
*/
SmtpSession *smtp_session_new(
  const char *zFrom,    /* Domain for the client */
  const char *zDest,    /* Domain of the server */
  u32 smtpFlags,        /* Flags */
  ...                   /* Arguments depending on the flags */
){
  SmtpSession *p;
  va_list ap;
  UrlData url;

  p = fossil_malloc( sizeof(*p) );
  memset(p, 0, sizeof(*p));
  p->zFrom = zFrom;
  p->zDest = zDest;
  p->smtpFlags = smtpFlags;
  memset(&url, 0, sizeof(url));
  url.port = 25;
  blob_init(&p->inbuf, 0, 0);
  va_start(ap, smtpFlags);
  if( smtpFlags & SMTP_PORT ){
    url.port = va_arg(ap, int);
  }
  if( smtpFlags & SMTP_TRACE_FILE ){
    p->logFile = va_arg(ap, FILE*);
  }
  if( smtpFlags & SMTP_TRACE_BLOB ){
    p->pTranscript = va_arg(ap, Blob*);
  }
  va_end(ap);
  if( (smtpFlags & SMTP_DIRECT)!=0 ){
    int i;
    p->zHostname = fossil_strdup(zDest);
    for(i=0; p->zHostname[i] && p->zHostname[i]!=':'; i++){}
    if( p->zHostname[i]==':' ){
      p->zHostname[i] = 0;
      url.port = atoi(&p->zHostname[i+1]);
    }
  }else{
    p->zHostname = smtp_mx_host(zDest);
  }
  if( p->zHostname==0 ){
    p->atEof = 1;
    p->zErr = mprintf("cannot locate SMTP server for \"%s\"", zDest);
    return p;
  }
  url.name = p->zHostname;
  socket_global_init();
  if( socket_open(&url) ){
    p->atEof = 1;
    p->zErr = socket_errmsg();
    socket_close();
  }
  return p;
}

/*
** Send a single line of output the SMTP client to the server.
*/
static void smtp_send_line(SmtpSession *p, const char *zFormat, ...){
  Blob b = empty_blob;
  va_list ap;
  char *z;
  int n;
  if( p->atEof ) return;
  va_start(ap, zFormat);
  blob_vappendf(&b, zFormat, ap);
  va_end(ap);
  z = blob_buffer(&b);
  n = blob_size(&b);
  assert( n>=2 );
  assert( z[n-1]=='\n' );
  assert( z[n-2]=='\r' );
  if( p->smtpFlags & SMTP_TRACE_STDOUT ){
    fossil_print("C: %.*s\n", n-2, z);
  }
  if( p->smtpFlags & SMTP_TRACE_FILE ){
    fprintf(p->logFile, "C: %.*s\n", n-2, z);
  }
  if( p->smtpFlags & SMTP_TRACE_BLOB ){
    blob_appendf(p->pTranscript, "C: %.*s\n", n-2, z);
  }
  socket_send(0, z, n);
  blob_reset(&b);
}

/*
** Read a line of input received from the SMTP server.  Make in point
** to the next input line.
**
** Content is actually read into the p->in buffer.  Then blob_line()
** is used to extract individual lines, passing each to "in".
*/
static void smtp_recv_line(SmtpSession *p, Blob *in){
  int n = blob_size(&p->inbuf);
  char *z = blob_buffer(&p->inbuf);
  int i = blob_tell(&p->inbuf);
  int nDelay = 0;
  if( i<n && z[n-1]=='\n' ){
    blob_line(&p->inbuf, in);
  }else if( p->atEof ){
    blob_init(in, 0, 0);
  }else{
    if( n>0 && i>=n ){
      blob_truncate(&p->inbuf, 0);
      blob_rewind(&p->inbuf);
      n = 0;
    }
    do{
      size_t got;
      blob_resize(&p->inbuf, n+1000);
      z = blob_buffer(&p->inbuf);
      got = socket_receive(0, z+n, 1000, 1);
      if( got>0 ){
        in->nUsed += got;
        n += got;
        z[n] = 0;
        if( n>0 && z[n-1]=='\n' ) break;
        if( got==1000 ) continue;
      }
      nDelay++;
      if( nDelay>100 ){
        blob_init(in, 0, 0);
        p->zErr = mprintf("timeout");
        socket_close();
        p->atEof = 1;
        return;
      }else{
        sqlite3_sleep(100);
      }
    }while( n<1 || z[n-1]!='\n' );
    blob_truncate(&p->inbuf, n);
    blob_line(&p->inbuf, in);
  }
  z = blob_buffer(in);
  n = blob_size(in);
  if( n && z[n-1]=='\n' ) n--;
  if( n && z[n-1]=='\r' ) n--;
  if( p->smtpFlags & SMTP_TRACE_STDOUT ){
    fossil_print("S: %.*s\n", n, z);
  }
  if( p->smtpFlags & SMTP_TRACE_FILE ){
    fprintf(p->logFile, "S: %.*s\n", n, z);
  }
  if( p->smtpFlags & SMTP_TRACE_BLOB ){
    blob_appendf(p->pTranscript, "S: %.*s\n", n-2, z);
  }
}

/*
** Capture a single-line server reply.
*/
static void smtp_get_reply_from_server(
  SmtpSession *p,   /* The SMTP connection */
  Blob *in,         /* Buffer used to hold the reply */
  int *piCode,      /* The return code */
  int *pbMore,      /* True if the reply is not complete */
  char **pzArg      /* Argument */
){
  int n;
  char *z;
  blob_truncate(in, 0);
  smtp_recv_line(p, in);
  z = blob_str(in);
  n = blob_size(in);
  if( z[0]=='#' ){
    *piCode = 0;
    *pbMore = 1;
    *pzArg = z;
  }else{
    *piCode = atoi(z);
    *pbMore = n>=4 && z[3]=='-';
    *pzArg = n>=4 ? z+4 : "";
  }
}

/*
** Have the client send a QUIT message.
*/
int smtp_client_quit(SmtpSession *p){
  Blob in = BLOB_INITIALIZER;
  int iCode = 0;
  int bMore = 0;
  char *zArg = 0;
  smtp_send_line(p, "QUIT\r\n");
  do{
    smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
  }while( bMore );
  p->atEof = 1;
  socket_close();
  return 0;
}

/*
** Begin a client SMTP session.  Wait for the initial 220 then send
** the EHLO and wait for a 250.
**
** Return 0 on success and non-zero for a failure.
*/
int smtp_client_startup(SmtpSession *p){
  Blob in = BLOB_INITIALIZER;
  int iCode = 0;
  int bMore = 0;
  char *zArg = 0;
  do{
    smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
  }while( bMore );
  if( iCode!=220 ){
    smtp_client_quit(p);
    return 1;
  }
  smtp_send_line(p, "EHLO %s\r\n", p->zFrom);
  do{
    smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
  }while( bMore );
  if( iCode!=250 ){
    smtp_client_quit(p);
    return 1;
  }
  return 0;
}

/*
** COMMAND: test-smtp-probe
**
** Usage: %fossil test-smtp-probe DOMAIN [ME]
**
** Interact with the SMTP server for DOMAIN by setting up a connection
** and then immediately shutting it back down.  Log all interaction
** on the console.  Use ME as the domain name of the sender.
**
** Options:
**    --direct              Use DOMAIN directly without going through MX
**    --port N              Talk on TCP port N
*/
void test_smtp_probe(void){
  SmtpSession *p;
  const char *zDomain;
  const char *zSelf;
  const char *zPort;
  int iPort = 25;
  u32 smtpFlags = SMTP_TRACE_STDOUT|SMTP_PORT;

  if( find_option("direct",0,0)!=0 ) smtpFlags |= SMTP_DIRECT;
  zPort = find_option("port",0,1);
  if( zPort ) iPort = atoi(zPort);
  verify_all_options();
  if( g.argc!=3 && g.argc!=4 ) usage("DOMAIN [ME]");
  zDomain = g.argv[2];
  zSelf = g.argc==4 ? g.argv[3] : "fossil-scm.org";
  p = smtp_session_new(zSelf, zDomain, smtpFlags, iPort);
  if( p->zErr ){
    fossil_fatal("%s", p->zErr);
  }
  fossil_print("Connection to \"%s\"\n", p->zHostname);
  smtp_client_startup(p);
  smtp_client_quit(p);
  if( p->zErr ){
    fossil_fatal("ERROR: %s\n", p->zErr);
  }
  smtp_session_free(p);
}

/*
** Send the content of an email message followed by a single
** "." line.  All lines must be \r\n terminated.  Any isolated
** \n line terminators in the input must be converted.  Also,
** a line beginning with "." must have the dot doubled per
** https://tools.ietf.org/html/rfc5321#section-4.5.2
*/
static void smtp_send_email_body(
  const char *zMsg,                          /* Message to send */
  size_t (*xSend)(void*,const void*,size_t), /* Sender callback function */
  void *pArg                                 /* First arg to sender */
){
  Blob in;
  Blob out = BLOB_INITIALIZER;
  Blob line;
  blob_init(&in, zMsg, -1);
  while( blob_line(&in, &line) ){
    char *z = blob_buffer(&line);
    int n = blob_size(&line);
    if( n==0 ) break;
    n--;
    if( n && z[n-1]=='\r' ) n--;
    if( z[0]=='.' ){
      blob_append(&out, "..", 2);   /* RFC 5321 § 4.5.2 */
      blob_append(&out, z+1, n-1);
    }else{
      blob_append(&out, z, n);
    }
    blob_append(&out, "\r\n", 2);
  }
  blob_append(&out, ".\r\n", 3);
  xSend(pArg, blob_buffer(&out), blob_size(&out));
  blob_reset(&out);
  blob_reset(&line);
}

/* A sender function appropriate for use by smtp_send_email_body() to
** send all content to the console, for testing.
*/
static size_t smtp_test_sender(void *NotUsed, const void *pContent, size_t N){
  return fwrite(pContent, 1, N, stdout);
}

/*
** COMMAND: test-smtp-senddata
**
** Usage: %fossil test-smtp-senddata FILE
**
** Read content from FILE, then send it to stdout encoded as if sent
** to the DATA portion of an SMTP session.  This command is used to
** test the encoding logic.
*/
void test_smtp_senddata(void){
  Blob f;
  if( g.argc!=3 ) usage("FILE");
  blob_read_from_file(&f, g.argv[2], ExtFILE);
  smtp_send_email_body(blob_str(&f), smtp_test_sender, 0);
  blob_reset(&f);
}

/*
** Send a single email message to the SMTP server.
**
** All email addresses (zFrom and azTo) must be plain "local@domain"
** format without the surrounding "<..>".  This routine will add the
** necessary "<..>".
**
** The body of the email should be well-structured.  This routine will
** convert any \n line endings into \r\n and will escape lines containing
** just ".", but will not make any other alterations or corrections to
** the message content.
**
** Return 0 on success.  Otherwise an error code.
*/
int smtp_send_msg(
  SmtpSession *p,        /* The SMTP server to which the message is sent */
  const char *zFrom,     /* Who the message is from */
  int nTo,               /* Number of receipients */
  const char **azTo,     /* Email address of each recipient */
  const char *zMsg       /* Body of the message */
){
  int i;
  int iCode = 0;
  int bMore = 0;
  char *zArg = 0;
  Blob in;
  blob_init(&in, 0, 0);
  smtp_send_line(p, "MAIL FROM:<%s>\r\n", zFrom);
  do{
    smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
  }while( bMore );
  if( iCode!=250 ) return 1;
  for(i=0; i<nTo; i++){
    smtp_send_line(p, "RCPT TO:<%s>\r\n", azTo[i]);
    do{
      smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
    }while( bMore );
    if( iCode!=250 ) return 1;
  }
  smtp_send_line(p, "DATA\r\n");
  do{
    smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
  }while( bMore );
  if( iCode!=354 ) return 1;
  smtp_send_email_body(zMsg, socket_send, 0);
  if( p->smtpFlags & SMTP_TRACE_STDOUT ){
    fossil_print("C: # message content\nC: .\n");
  }
  if( p->smtpFlags & SMTP_TRACE_FILE ){
    fprintf(p->logFile, "C: # message content\nC: .\n");
  }
  if( p->smtpFlags & SMTP_TRACE_BLOB ){
    blob_appendf(p->pTranscript, "C: # message content\nC: .\n");
  }
  do{
    smtp_get_reply_from_server(p, &in, &iCode, &bMore, &zArg);
  }while( bMore );
  if( iCode!=250 ) return 1;
  return 0;
}

/*
** The input is a base email address of the form "local@domain".
** Return a pointer to just the "domain" part, or 0 if the string
** contains no "@".
*/
const char *domain_of_addr(const char *z){
  while( z[0] && z[0]!='@' ) z++;
  if( z[0]==0 ) return 0;
  return z+1;
}


/*
** COMMAND: test-smtp-send
**
** Usage: %fossil test-smtp-send EMAIL FROM TO ...
**
** Use SMTP to send the email message contained in the file named EMAIL
** to the list of users TO.  FROM is the sender of the email.
**
** Options:
**      --direct              Go directly to the TO domain.  Bypass MX lookup
**      --relayhost R         Use R as relay host directly for delivery.
**      --port N              Use TCP port N instead of 25
**      --trace               Show the SMTP conversation on the console
*/
void test_smtp_send(void){
  SmtpSession *p;
  const char *zFrom;
  int nTo;
  const char *zToDomain;
  const char *zFromDomain;
  const char *zRelay;
  const char **azTo;
  int smtpPort = 25;
  const char *zPort;
  Blob body;
  u32 smtpFlags = SMTP_PORT;
  if( find_option("trace",0,0)!=0 ) smtpFlags |= SMTP_TRACE_STDOUT;
  if( find_option("direct",0,0)!=0 ) smtpFlags |= SMTP_DIRECT;
  zPort = find_option("port",0,1);
  if( zPort ) smtpPort = atoi(zPort);
  zRelay = find_option("relayhost",0,1);
  verify_all_options();
  if( g.argc<5 ) usage("EMAIL FROM TO ...");
  blob_read_from_file(&body, g.argv[2], ExtFILE);
  zFrom = g.argv[3];
  nTo = g.argc-4;
  azTo = (const char**)g.argv+4;
  zFromDomain = domain_of_addr(zFrom);
  if( zRelay!=0 && zRelay[0]!= 0) {
    smtpFlags |= SMTP_DIRECT;
    zToDomain = zRelay;
  }else{
    zToDomain = domain_of_addr(azTo[0]);
  }
  p = smtp_session_new(zFromDomain, zToDomain, smtpFlags, smtpPort);
  if( p->zErr ){
    fossil_fatal("%s", p->zErr);
  }
  fossil_print("Connection to \"%s\"\n", p->zHostname);
  smtp_client_startup(p);
  smtp_send_msg(p, zFrom, nTo, azTo, blob_str(&body));
  smtp_client_quit(p);
  if( p->zErr ){
    fossil_fatal("ERROR: %s\n", p->zErr);
  }
  smtp_session_free(p);
  blob_reset(&body);
}
Added src/sorttable.js.








































































































































































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/* Javascript code that will enables sorting of the table.  This code is
** derived from
**
**     http://www.webtoolkit.info/sortable-html-table.html
**
** but with extensive modifications.
**
** All tables with class "sortable" are registered with the SortableTable()
** function.  Example:
**
**   <table class='sortable' data-column-types='tnkx' data-init-sort='2'>
**
** Column data types are determined by the data-column-types attribute of
** the table.  The value of data-column-types is a string where each 
** character of the string represents a datatype for one column in the
** table.
**
**       t      Sort by text
**       n      Sort numerically
**       k      Sort by the data-sortkey property
**       x      This column is not sortable
**
** Capital letters mean sort in reverse order.
** If there are fewer characters in zColumnTypes[] than their are columns,
** then all extra columns assume type "t" (text).
**
** If a column of the table is initially sorted, then the data-init-sort
** attribute should be set to the 1-based index of that column.  (The
** left-most column is 1, the next column to the right is 2, and so forth.)
** A value of 0 in the data-init-sort attribute indicates that no columns
** where initially sorted.
**
** Clicking on the same column header twice in a row inverts the sort.
*/
function SortableTable(tableEl){
  var columnTypes = tableEl.getAttribute("data-column-types");
  var initSort = tableEl.getAttribute("data-init-sort");
  this.tbody = tableEl.getElementsByTagName('tbody');
  this.columnTypes = columnTypes;
  if(tableEl.rows.length==0) return;
  var ncols = tableEl.rows[0].cells.length;
  for(var i = columnTypes.length; i<=ncols; i++){this.columnTypes += 't';}
  this.sort = function (cell) {
    var column = cell.cellIndex;
    var sortFn;
    switch( cell.sortType ){
      case "n": sortFn = this.sortNumeric;  break;
      case "N": sortFn = this.sortReverseNumeric;  break;
      case "t": sortFn = this.sortText;  break;
      case "T": sortFn = this.sortReverseText;  break;
      case "k": sortFn = this.sortKey;  break;
      case "K": sortFn = this.sortReverseKey;  break;
      default:  return;
    }
    this.sortIndex = column;
    var newRows = new Array();
    for (j = 0; j < this.tbody[0].rows.length; j++) {
       newRows[j] = this.tbody[0].rows[j];
    }
    if( this.sortIndex==Math.abs(this.prevColumn)-1 ){
      newRows.reverse();
      this.prevColumn = -this.prevColumn;
    }else{
      newRows.sort(sortFn);
      this.prevColumn = this.sortIndex+1;
    }
    for (i=0;i<newRows.length;i++) {
      this.tbody[0].appendChild(newRows[i]);
    }
    this.setHdrIcons();
  }
  this.setHdrIcons = function() {
    for (var i=0; i<this.hdrRow.cells.length; i++) {
      if( this.columnTypes[i]=='x' ) continue;
      var sortType;
      if( this.prevColumn==i+1 ){
        sortType = 'asc';
      }else if( this.prevColumn==(-1-i) ){
        sortType = 'desc'
      }else{
        sortType = 'none';
      }
      var hdrCell = this.hdrRow.cells[i];
      var clsName = hdrCell.className.replace(/\s*\bsort\s*\w+/, '');
      clsName += ' sort ' + sortType;
      hdrCell.className = clsName;
    }
  }
  this.sortText = function(a,b) {
    var i = thisObject.sortIndex;
    aa = a.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    bb = b.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    if(aa<bb) return -1;
    if(aa==bb) return a.rowIndex-b.rowIndex;
    return 1;
  }
  this.sortReverseText = function(a,b) {
    var i = thisObject.sortIndex;
    aa = a.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    bb = b.cells[i].textContent.replace(/^\W+/,'').toLowerCase();
    if(aa<bb) return +1;
    if(aa==bb) return a.rowIndex-b.rowIndex;
    return -1;
  }
  this.sortNumeric = function(a,b) {
    var i = thisObject.sortIndex;
    aa = parseFloat(a.cells[i].textContent);
    if (isNaN(aa)) aa = 0;
    bb = parseFloat(b.cells[i].textContent);
    if (isNaN(bb)) bb = 0;
    if(aa==bb) return a.rowIndex-b.rowIndex;
    return aa-bb;
  }
  this.sortReverseNumeric = function(a,b) {
    var i = thisObject.sortIndex;
    aa = parseFloat(a.cells[i].textContent);
    if (isNaN(aa)) aa = 0;
    bb = parseFloat(b.cells[i].textContent);
    if (isNaN(bb)) bb = 0;
    if(aa==bb) return a.rowIndex-b.rowIndex;
    return bb-aa;
  }
  this.sortKey = function(a,b) {
    var i = thisObject.sortIndex;
    aa = a.cells[i].getAttribute("data-sortkey");
    bb = b.cells[i].getAttribute("data-sortkey");
    if(aa<bb) return -1;
    if(aa==bb) return a.rowIndex-b.rowIndex;
    return 1;
  }
  this.sortReverseKey = function(a,b) {
    var i = thisObject.sortIndex;
    aa = a.cells[i].getAttribute("data-sortkey");
    bb = b.cells[i].getAttribute("data-sortkey");
    if(aa<bb) return +1;
    if(aa==bb) return a.rowIndex-b.rowIndex;
    return -1;
  }
  var x = tableEl.getElementsByTagName('thead');
  if(!(this.tbody && this.tbody[0].rows && this.tbody[0].rows.length>0)){
    return;
  }
  if(x && x[0].rows && x[0].rows.length > 0) {
    this.hdrRow = x[0].rows[0];
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    return;
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  var thisObject = this;
  this.prevColumn = initSort;
  for (var i=0; i<this.hdrRow.cells.length; i++) {
    if( columnTypes[i]=='x' ) continue;
    var hdrcell = this.hdrRow.cells[i];
    hdrcell.sTable = this;
    hdrcell.style.cursor = "pointer";
    hdrcell.sortType = columnTypes[i] || 't';
    hdrcell.onclick = function () {
      this.sTable.sort(this);
      return false;
    }
  }
  this.setHdrIcons()
}
(function(){
  var x = document.getElementsByClassName("sortable");
  for(var i=0; i<x.length; i++){
    new SortableTable(x[i]);
  }
}())
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The `[0-9a-f].wav` files in this directory contain a human voice
speaking each of the 16 hexadecimal digits.  If a captcha string
consists of just hexadecimal digits (as is the case for captchas
generated by the [captcha.c module](/finfo/src/captcha.c)) then these WAV
files can be concatenated together to generate an audio reading of the
captcha, which enables visually impaired users to complete the
captcha.

Each of the WAV files uses 8000 samples per second, 8 bits per sample
and are 6000 samples in length.

The recordings are made by Philip Bennefall and are of his own voice.
Mr. Bennefall is himself blind and uses this system implemented with these
recordings to complete captchas for Fossil.
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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This module contains the code that initializes the "sqlite3" command-line
** shell against the repository database.  The command-line shell itself
** is a copy of the "shell.c" code from SQLite.  This file contains logic
** to initialize the code in shell.c.
*/
#include "config.h"
#include "sqlcmd.h"
#include <stdlib.h> /* atexit() */
#include <zlib.h>
#ifndef _WIN32
#  include "linenoise.h"
#endif

/*
** True if the "fossil sql" command has the --test flag.  False otherwise.
*/
static int local_bSqlCmdTest = 0;

/*
** Implementation of the "content(X)" SQL function.  Return the complete
** content of artifact identified by X as a blob.
*/
static void sqlcmd_content(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  int rid;
  Blob cx;
  const char *zName;
  assert( argc==1 );
  zName = (const char*)sqlite3_value_text(argv[0]);
  if( zName==0 ) return;
  g.db = sqlite3_context_db_handle(context);
  g.repositoryOpen = 1;
  rid = name_to_rid(zName);
  if( rid==0 ) return;
  if( content_get(rid, &cx) ){
    sqlite3_result_blob(context, blob_buffer(&cx), blob_size(&cx),
                                 SQLITE_TRANSIENT);
    blob_reset(&cx);
  }
}

/*
** Implementation of the "compress(X)" SQL function.  The input X is
** compressed using zLib and the output is returned.
*/
static void sqlcmd_compress(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const unsigned char *pIn;
  unsigned char *pOut;
  unsigned int nIn;
  unsigned long int nOut;
  int rc;

  pIn = sqlite3_value_blob(argv[0]);
  nIn = sqlite3_value_bytes(argv[0]);
  nOut = 13 + nIn + (nIn+999)/1000;
  pOut = sqlite3_malloc( nOut+4 );
  pOut[0] = nIn>>24 & 0xff;
  pOut[1] = nIn>>16 & 0xff;
  pOut[2] = nIn>>8 & 0xff;
  pOut[3] = nIn & 0xff;
  rc = compress(&pOut[4], &nOut, pIn, nIn);
  if( rc==Z_OK ){
    sqlite3_result_blob(context, pOut, nOut+4, sqlite3_free);
  }else if( rc==Z_MEM_ERROR ){
    sqlite3_free(pOut);
    sqlite3_result_error_nomem(context);
  }else{
    sqlite3_free(pOut);
    sqlite3_result_error(context, "input cannot be zlib compressed", -1);
  }
}

/*
** Implementation of the "decompress(X)" SQL function.  The argument X
** is a blob which was obtained from compress(Y).  The output will be
** the value Y.
*/
static void sqlcmd_decompress(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const unsigned char *pIn;
  unsigned char *pOut;
  unsigned int nIn;
  unsigned long int nOut;
  int rc;

  pIn = sqlite3_value_blob(argv[0]);
  if( pIn==0 ) return;
  nIn = sqlite3_value_bytes(argv[0]);
  if( nIn<4 ) return;
  nOut = (pIn[0]<<24) + (pIn[1]<<16) + (pIn[2]<<8) + pIn[3];
  pOut = sqlite3_malloc( nOut+1 );
  rc = uncompress(pOut, &nOut, &pIn[4], nIn-4);
  if( rc==Z_OK ){
    sqlite3_result_blob(context, pOut, nOut, sqlite3_free);
  }else if( rc==Z_MEM_ERROR ){
    sqlite3_free(pOut);
    sqlite3_result_error_nomem(context);
  }else{
    sqlite3_free(pOut);
    sqlite3_result_error(context, "input is not zlib compressed", -1);
  }
}

/*
** Implementation of the "gather_artifact_stats(X)" SQL function.
** That function merely calls the gather_artifact_stats() function
** in stat.c to populate the ARTSTAT temporary table.
*/
static void sqlcmd_gather_artifact_stats(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  gather_artifact_stats(1);
}

/*
** Add the content(), compress(), decompress(), and
** gather_artifact_stats() SQL functions to database connection db.
*/
int add_content_sql_commands(sqlite3 *db){
  sqlite3_create_function(db, "content", 1, SQLITE_UTF8, 0,
                          sqlcmd_content, 0, 0);
  sqlite3_create_function(db, "compress", 1, SQLITE_UTF8, 0,
                          sqlcmd_compress, 0, 0);
  sqlite3_create_function(db, "decompress", 1, SQLITE_UTF8, 0,
                          sqlcmd_decompress, 0, 0);
  sqlite3_create_function(db, "gather_artifact_stats", 0, SQLITE_UTF8, 0,
                          sqlcmd_gather_artifact_stats, 0, 0);
  return SQLITE_OK;
}

/*
** Undocumented test SQL functions:
**
**     db_protect(X)
**     db_protect_pop(X)
**
** These invoke the corresponding C routines.
**
** WARNING:
** Do not instantiate these functions for any Fossil webpage or command
** method other than the "fossil sql" command.  If an attacker gains access
** to these functions, he will be able to disable other defense mechanisms.
**
** This routines are for interactiving testing only.  They are experimental
** and undocumented (apart from this comments) and might go away or change
** in future releases.
**
** 2020-11-29:  These functions are now only available if the "fossil sql"
** command is started with the --test option.
*/
static void sqlcmd_db_protect(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  unsigned mask = 0;
  const char *z = (const char*)sqlite3_value_text(argv[0]);
  if( z!=0 && local_bSqlCmdTest ){
    if( sqlite3_stricmp(z,"user")==0 )      mask |= PROTECT_USER;
    if( sqlite3_stricmp(z,"config")==0 )    mask |= PROTECT_CONFIG;
    if( sqlite3_stricmp(z,"sensitive")==0 ) mask |= PROTECT_SENSITIVE;
    if( sqlite3_stricmp(z,"readonly")==0 )  mask |= PROTECT_READONLY;
    if( sqlite3_stricmp(z,"all")==0 )       mask |= PROTECT_ALL;
    db_protect(mask);
  }
}
static void sqlcmd_db_protect_pop(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  if( !local_bSqlCmdTest ) db_protect_pop();
}

/*
** This is the "automatic extension" initializer that runs right after
** the connection to the repository database is opened.  Set up the
** database connection to be more useful to the human operator.
*/
static int sqlcmd_autoinit(
  sqlite3 *db,
  const char **pzErrMsg,
  const void *notUsed
){
  int mTrace = SQLITE_TRACE_CLOSE;
  add_content_sql_commands(db);
  db_add_aux_functions(db);
  re_add_sql_func(db);
  search_sql_setup(db);
  foci_register(db);
  deltafunc_init(db);
  helptext_vtab_register(db);
  builtin_vtab_register(db);
  g.repositoryOpen = 1;
  g.db = db;
  sqlite3_busy_timeout(db, 10000);
  sqlite3_db_config(db, SQLITE_DBCONFIG_MAINDBNAME, "repository");
  db_maybe_set_encryption_key(db, g.zRepositoryName);
  if( g.zLocalDbName ){
    char *zSql = sqlite3_mprintf("ATTACH %Q AS 'localdb' KEY ''",
                                 g.zLocalDbName);
    sqlite3_exec(db, zSql, 0, 0, 0);
    sqlite3_free(zSql);
  }
  if( g.zConfigDbName ){
    char *zSql = sqlite3_mprintf("ATTACH %Q AS 'configdb' KEY ''",
                                 g.zConfigDbName);
    sqlite3_exec(db, zSql, 0, 0, 0);
    sqlite3_free(zSql);
  }
  /* Arrange to trace close operations so that static prepared statements
  ** will get cleaned up when the shell closes the database connection */
  if( g.fSqlTrace ) mTrace |= SQLITE_TRACE_PROFILE;
  sqlite3_trace_v2(db, mTrace, db_sql_trace, 0);
  db_protect_only(PROTECT_NONE);
  sqlite3_set_authorizer(db, db_top_authorizer, db);
  if( local_bSqlCmdTest ){
    sqlite3_create_function(db, "db_protect", 1, SQLITE_UTF8, 0,
                            sqlcmd_db_protect, 0, 0);
    sqlite3_create_function(db, "db_protect_pop", 0, SQLITE_UTF8, 0,
                            sqlcmd_db_protect_pop, 0, 0);
    sqlite3_create_function(db, "shared_secret", 2, SQLITE_UTF8, 0,
                            sha1_shared_secret_sql_function, 0, 0);
  }
  return SQLITE_OK;
}

/*
** atexit() handler that cleans up global state modified by this module.
*/
static void sqlcmd_atexit(void) {
  g.zConfigDbName = 0; /* prevent panic */
}

/*
** This routine is called by the sqlite3 command-line shell to
** to load the name the Fossil repository database.
*/
void sqlcmd_get_dbname(const char **pzRepoName){
  *pzRepoName = g.zRepositoryName;
}

/*
** This routine is called by the sqlite3 command-line shell to do
** extra initialization prior to starting up the shell.
*/
void sqlcmd_init_proc(void){
  sqlite3_initialize();
  sqlite3_auto_extension((void(*)(void))sqlcmd_autoinit);
}

#if USE_SEE
/*
** This routine is called by the patched sqlite3 command-line shell in order
** to load the encryption key for the open Fossil database.  The memory that
** is pointed to by the value placed in pzKey must be obtained from malloc.
*/
void fossil_key(const char **pzKey, int *pnKey){
  char *zSavedKey = db_get_saved_encryption_key();
  char *zKey;
  size_t savedKeySize = db_get_saved_encryption_key_size();

  if( !db_is_valid_saved_encryption_key(zSavedKey, savedKeySize) ) return;
  zKey = (char*)malloc( savedKeySize );
  if( zKey ){
    memcpy(zKey, zSavedKey, savedKeySize);
    *pzKey = zKey;
    if( fossil_getenv("FOSSIL_USE_SEE_TEXTKEY")==0 ){
      *pnKey = (int)strlen(zKey);
    }else{
      *pnKey = -1;
    }
  }else{
    fossil_fatal("failed to allocate %u bytes for key", savedKeySize);
  }
}
#endif

/*
** This routine closes the Fossil databases and/or invalidates the global
** state variables that keep track of them.
*/
static void fossil_close(int bDb, int noRepository){
  if( bDb ) db_close(1);
  if( noRepository ) g.zRepositoryName = 0;
  g.db = 0;
  g.repositoryOpen = 0;
  g.localOpen = 0;
}

/*
** COMMAND: sql
** COMMAND: sqlite3*
**
** Usage: %fossil sql ?OPTIONS?
**
** Run the sqlite3 command-line shell on the Fossil repository
** identified by the -R option, or on the current repository.
** See https://www.sqlite.org/cli.html for additional information about
** the sqlite3 command-line shell.
**
** WARNING:  Careless use of this command can corrupt a Fossil repository
** in ways that are unrecoverable.  Be sure you know what you are doing before
** running any SQL commands that modify the repository database.  Use the
** --readonly option to prevent accidental damage to the repository.
**
** Options:
**    --no-repository           Skip opening the repository database
**    --readonly                Open the repository read-only.  No changes
**                              are allowed.  This is a recommended safety
**                              precaution to prevent repository damage.
**    -R REPOSITORY             Use REPOSITORY as the repository database
**    --test                    Enable some testing and analysis features
**                              that are normally disabled.
**
** All of the standard sqlite3 command-line shell options should also
** work.
**
** The following SQL extensions are provided with this Fossil-enhanced
** version of the sqlite3 command-line shell:
**
**    builtin                   A virtual table that contains one row for
**                              each datafile that is built into the Fossil
**                              binary.
**
**    checkin_mtime(X,Y)        Return the mtime for the file Y (a BLOB.RID)
**                              found in check-in X (another BLOB.RID value).
**
**    compress(X)               Compress text X with the same algorithm used
**                              to compress artifacts in the BLOB table.
**
**    content(X)                Return the content of artifact X. X can be an
**                              artifact hash or hash prefix or a tag. Artifacts
**                              are stored compressed and deltaed. This function
**                              does all necessary decompression and undeltaing.
**
**    decompress(X)             Decompress text X.  Undoes the work of
**                              compress(X).
**
**    delta_apply(X,D)          Apply delta D to source blob X and return
**                              the result.
**
**    delta_create(X,Y)         Create and return a delta that will convert
**                              X into Y.
**
**    delta_output_size(D)      Return the number of bytes of output to expect
**                              when applying delta D
**
**    delta_parse(D)            A table-valued function that deconstructs
**                              delta D and returns rows for each element of
**                              that delta.
**
**    files_of_checkin(X)       A table-valued function that returns info on
**                              all files contained in check-in X.  Example:
**
**                                  SELECT * FROM files_of_checkin('trunk');
**
**    helptext                  A virtual table with one row for each command,
**                              webpage, and setting together with the built-in
**                              help text.
**
**    now()                     Return the number of seconds since 1970.
**
**    obscure(T)                Obfuscate the text password T so that its
**                              original value is not readily visible.  Fossil
**                              uses this same algorithm when storing passwords
**                              of remote URLs.
**
**    regexp                    The REGEXP operator works, unlike in
**                              standard SQLite.
**
**    symbolic_name_to_rid(X)   Return the BLOB.RID corresponding to symbolic
**                              name X.
*/
void cmd_sqlite3(void){
  int noRepository;
  char *zConfigDb;
  extern int sqlite3_shell(int, char**);
#ifdef FOSSIL_ENABLE_TH1_HOOKS
  g.fNoThHook = 1;
#endif
  noRepository = find_option("no-repository", 0, 0)!=0;
  local_bSqlCmdTest = find_option("test",0,0)!=0;
  if( !noRepository ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  }
  db_open_config(1,0);
  zConfigDb = fossil_strdup(g.zConfigDbName);
  fossil_close(1, noRepository);
  sqlite3_shutdown();
#ifndef _WIN32
  linenoiseSetMultiLine(1);
#endif
  atexit(sqlcmd_atexit);
  g.zConfigDbName = zConfigDb;
  g.argv[1] = "-quote";
  sqlite3_shell(g.argc, g.argv);
  sqlite3_cancel_auto_extension((void(*)(void))sqlcmd_autoinit);
  fossil_close(0, noRepository);
}
Deleted src/sqlite3.c.

more than 10,000 changes

Deleted src/sqlite3.h.
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/*
** 2001 September 15
**
** The author disclaims copyright to this source code.  In place of
** a legal notice, here is a blessing:
**
**    May you do good and not evil.
**    May you find forgiveness for yourself and forgive others.
**    May you share freely, never taking more than you give.
**
*************************************************************************
** This header file defines the interface that the SQLite library
** presents to client programs.  If a C-function, structure, datatype,
** or constant definition does not appear in this file, then it is
** not a published API of SQLite, is subject to change without
** notice, and should not be referenced by programs that use SQLite.
**
** Some of the definitions that are in this file are marked as
** "experimental".  Experimental interfaces are normally new
** features recently added to SQLite.  We do not anticipate changes
** to experimental interfaces but reserve the right to make minor changes
** if experience from use "in the wild" suggest such changes are prudent.
**
** The official C-language API documentation for SQLite is derived
** from comments in this file.  This file is the authoritative source
** on how SQLite interfaces are suppose to operate.
**
** The name of this file under configuration management is "sqlite.h.in".
** The makefile makes some minor changes to this file (such as inserting
** the version number) and changes its name to "sqlite3.h" as
** part of the build process.
*/
#ifndef _SQLITE3_H_
#define _SQLITE3_H_
#include <stdarg.h>     /* Needed for the definition of va_list */

/*
** Make sure we can call this stuff from C++.
*/
#ifdef __cplusplus
extern "C" {
#endif


/*
** Add the ability to override 'extern'
*/
#ifndef SQLITE_EXTERN
# define SQLITE_EXTERN extern
#endif

#ifndef SQLITE_API
# define SQLITE_API
#endif


/*
** These no-op macros are used in front of interfaces to mark those
** interfaces as either deprecated or experimental.  New applications
** should not use deprecated interfaces - they are support for backwards
** compatibility only.  Application writers should be aware that
** experimental interfaces are subject to change in point releases.
**
** These macros used to resolve to various kinds of compiler magic that
** would generate warning messages when they were used.  But that
** compiler magic ended up generating such a flurry of bug reports
** that we have taken it all out and gone back to using simple
** noop macros.
*/
#define SQLITE_DEPRECATED
#define SQLITE_EXPERIMENTAL

/*
** Ensure these symbols were not defined by some previous header file.
*/
#ifdef SQLITE_VERSION
# undef SQLITE_VERSION
#endif
#ifdef SQLITE_VERSION_NUMBER
# undef SQLITE_VERSION_NUMBER
#endif

/*
** CAPI3REF: Compile-Time Library Version Numbers
**
** ^(The [SQLITE_VERSION] C preprocessor macro in the sqlite3.h header
** evaluates to a string literal that is the SQLite version in the
** format "X.Y.Z" where X is the major version number (always 3 for
** SQLite3) and Y is the minor version number and Z is the release number.)^
** ^(The [SQLITE_VERSION_NUMBER] C preprocessor macro resolves to an integer
** with the value (X*1000000 + Y*1000 + Z) where X, Y, and Z are the same
** numbers used in [SQLITE_VERSION].)^
** The SQLITE_VERSION_NUMBER for any given release of SQLite will also
** be larger than the release from which it is derived.  Either Y will
** be held constant and Z will be incremented or else Y will be incremented
** and Z will be reset to zero.
**
** Since version 3.6.18, SQLite source code has been stored in the
** <a href="http://www.fossil-scm.org/">Fossil configuration management
** system</a>.  ^The SQLITE_SOURCE_ID macro evalutes to
** a string which identifies a particular check-in of SQLite
** within its configuration management system.  ^The SQLITE_SOURCE_ID
** string contains the date and time of the check-in (UTC) and an SHA1
** hash of the entire source tree.
**
** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()],
** [sqlite_version()] and [sqlite_source_id()].
*/
#define SQLITE_VERSION        "3.6.23"
#define SQLITE_VERSION_NUMBER 3006023
#define SQLITE_SOURCE_ID      "2010-04-15 23:24:29 f96782b389b5b97b488dc5814f7082e0393f64cd"

/*
** CAPI3REF: Run-Time Library Version Numbers
** KEYWORDS: sqlite3_version, sqlite3_sourceid
**
** These interfaces provide the same information as the [SQLITE_VERSION],
** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
** but are associated with the library instead of the header file.  ^(Cautious
** programmers might include assert() statements in their application to
** verify that values returned by these interfaces match the macros in
** the header, and thus insure that the application is
** compiled with matching library and header files.
**
** <blockquote><pre>
** assert( sqlite3_libversion_number()==SQLITE_VERSION_NUMBER );
** assert( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)==0 );
** assert( strcmp(sqlite3_libversion(),SQLITE_VERSION)==0 );
** </pre></blockquote>)^
**
** ^The sqlite3_version[] string constant contains the text of [SQLITE_VERSION]
** macro.  ^The sqlite3_libversion() function returns a pointer to the
** to the sqlite3_version[] string constant.  The sqlite3_libversion()
** function is provided for use in DLLs since DLL users usually do not have
** direct access to string constants within the DLL.  ^The
** sqlite3_libversion_number() function returns an integer equal to
** [SQLITE_VERSION_NUMBER].  ^The sqlite3_sourceid() function returns 
** a pointer to a string constant whose value is the same as the 
** [SQLITE_SOURCE_ID] C preprocessor macro.
**
** See also: [sqlite_version()] and [sqlite_source_id()].
*/
SQLITE_API SQLITE_EXTERN const char sqlite3_version[];
SQLITE_API const char *sqlite3_libversion(void);
SQLITE_API const char *sqlite3_sourceid(void);
SQLITE_API int sqlite3_libversion_number(void);

/*
** CAPI3REF: Run-Time Library Compilation Options Diagnostics
**
** ^The sqlite3_compileoption_used() function returns 0 or 1 
** indicating whether the specified option was defined at 
** compile time.  ^The SQLITE_ prefix may be omitted from the 
** option name passed to sqlite3_compileoption_used().  
**
** ^The sqlite3_compileoption_get() function allows interating
** over the list of options that were defined at compile time by
** returning the N-th compile time option string.  ^If N is out of range,
** sqlite3_compileoption_get() returns a NULL pointer.  ^The SQLITE_ 
** prefix is omitted from any strings returned by 
** sqlite3_compileoption_get().
**
** ^Support for the diagnostic functions sqlite3_compileoption_used()
** and sqlite3_compileoption_get() may be omitted by specifing the 
** [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time.
**
** See also: SQL functions [sqlite_compileoption_used()] and
** [sqlite_compileoption_get()] and the [compile_options pragma].
*/
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
SQLITE_API int sqlite3_compileoption_used(const char *zOptName);
SQLITE_API const char *sqlite3_compileoption_get(int N);
#endif

/*
** CAPI3REF: Test To See If The Library Is Threadsafe
**
** ^The sqlite3_threadsafe() function returns zero if and only if
** SQLite was compiled mutexing code omitted due to the
** [SQLITE_THREADSAFE] compile-time option being set to 0.
**
** SQLite can be compiled with or without mutexes.  When
** the [SQLITE_THREADSAFE] C preprocessor macro is 1 or 2, mutexes
** are enabled and SQLite is threadsafe.  When the
** [SQLITE_THREADSAFE] macro is 0, 
** the mutexes are omitted.  Without the mutexes, it is not safe
** to use SQLite concurrently from more than one thread.
**
** Enabling mutexes incurs a measurable performance penalty.
** So if speed is of utmost importance, it makes sense to disable
** the mutexes.  But for maximum safety, mutexes should be enabled.
** ^The default behavior is for mutexes to be enabled.
**
** This interface can be used by an application to make sure that the
** version of SQLite that it is linking against was compiled with
** the desired setting of the [SQLITE_THREADSAFE] macro.
**
** This interface only reports on the compile-time mutex setting
** of the [SQLITE_THREADSAFE] flag.  If SQLite is compiled with
** SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but
** can be fully or partially disabled using a call to [sqlite3_config()]
** with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD],
** or [SQLITE_CONFIG_MUTEX].  ^(The return value of the
** sqlite3_threadsafe() function shows only the compile-time setting of
** thread safety, not any run-time changes to that setting made by
** sqlite3_config(). In other words, the return value from sqlite3_threadsafe()
** is unchanged by calls to sqlite3_config().)^
**
** See the [threading mode] documentation for additional information.
*/
SQLITE_API int sqlite3_threadsafe(void);

/*
** CAPI3REF: Database Connection Handle
** KEYWORDS: {database connection} {database connections}
**
** Each open SQLite database is represented by a pointer to an instance of
** the opaque structure named "sqlite3".  It is useful to think of an sqlite3
** pointer as an object.  The [sqlite3_open()], [sqlite3_open16()], and
** [sqlite3_open_v2()] interfaces are its constructors, and [sqlite3_close()]
** is its destructor.  There are many other interfaces (such as
** [sqlite3_prepare_v2()], [sqlite3_create_function()], and
** [sqlite3_busy_timeout()] to name but three) that are methods on an
** sqlite3 object.
*/
typedef struct sqlite3 sqlite3;

/*
** CAPI3REF: 64-Bit Integer Types
** KEYWORDS: sqlite_int64 sqlite_uint64
**
** Because there is no cross-platform way to specify 64-bit integer types
** SQLite includes typedefs for 64-bit signed and unsigned integers.
**
** The sqlite3_int64 and sqlite3_uint64 are the preferred type definitions.
** The sqlite_int64 and sqlite_uint64 types are supported for backwards
** compatibility only.
**
** ^The sqlite3_int64 and sqlite_int64 types can store integer values
** between -9223372036854775808 and +9223372036854775807 inclusive.  ^The
** sqlite3_uint64 and sqlite_uint64 types can store integer values 
** between 0 and +18446744073709551615 inclusive.
*/
#ifdef SQLITE_INT64_TYPE
  typedef SQLITE_INT64_TYPE sqlite_int64;
  typedef unsigned SQLITE_INT64_TYPE sqlite_uint64;
#elif defined(_MSC_VER) || defined(__BORLANDC__)
  typedef __int64 sqlite_int64;
  typedef unsigned __int64 sqlite_uint64;
#else
  typedef long long int sqlite_int64;
  typedef unsigned long long int sqlite_uint64;
#endif
typedef sqlite_int64 sqlite3_int64;
typedef sqlite_uint64 sqlite3_uint64;

/*
** If compiling for a processor that lacks floating point support,
** substitute integer for floating-point.
*/
#ifdef SQLITE_OMIT_FLOATING_POINT
# define double sqlite3_int64
#endif

/*
** CAPI3REF: Closing A Database Connection
**
** ^The sqlite3_close() routine is the destructor for the [sqlite3] object.
** ^Calls to sqlite3_close() return SQLITE_OK if the [sqlite3] object is
** successfullly destroyed and all associated resources are deallocated.
**
** Applications must [sqlite3_finalize | finalize] all [prepared statements]
** and [sqlite3_blob_close | close] all [BLOB handles] associated with
** the [sqlite3] object prior to attempting to close the object.  ^If
** sqlite3_close() is called on a [database connection] that still has
** outstanding [prepared statements] or [BLOB handles], then it returns
** SQLITE_BUSY.
**
** ^If [sqlite3_close()] is invoked while a transaction is open,
** the transaction is automatically rolled back.
**
** The C parameter to [sqlite3_close(C)] must be either a NULL
** pointer or an [sqlite3] object pointer obtained
** from [sqlite3_open()], [sqlite3_open16()], or
** [sqlite3_open_v2()], and not previously closed.
** ^Calling sqlite3_close() with a NULL pointer argument is a 
** harmless no-op.
*/
SQLITE_API int sqlite3_close(sqlite3 *);

/*
** The type for a callback function.
** This is legacy and deprecated.  It is included for historical
** compatibility and is not documented.
*/
typedef int (*sqlite3_callback)(void*,int,char**, char**);

/*
** CAPI3REF: One-Step Query Execution Interface
**
** The sqlite3_exec() interface is a convenience wrapper around
** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()],
** that allows an application to run multiple statements of SQL
** without having to use a lot of C code. 
**
** ^The sqlite3_exec() interface runs zero or more UTF-8 encoded,
** semicolon-separate SQL statements passed into its 2nd argument,
** in the context of the [database connection] passed in as its 1st
** argument.  ^If the callback function of the 3rd argument to
** sqlite3_exec() is not NULL, then it is invoked for each result row
** coming out of the evaluated SQL statements.  ^The 4th argument to
** to sqlite3_exec() is relayed through to the 1st argument of each
** callback invocation.  ^If the callback pointer to sqlite3_exec()
** is NULL, then no callback is ever invoked and result rows are
** ignored.
**
** ^If an error occurs while evaluating the SQL statements passed into
** sqlite3_exec(), then execution of the current statement stops and
** subsequent statements are skipped.  ^If the 5th parameter to sqlite3_exec()
** is not NULL then any error message is written into memory obtained
** from [sqlite3_malloc()] and passed back through the 5th parameter.
** To avoid memory leaks, the application should invoke [sqlite3_free()]
** on error message strings returned through the 5th parameter of
** of sqlite3_exec() after the error message string is no longer needed.
** ^If the 5th parameter to sqlite3_exec() is not NULL and no errors
** occur, then sqlite3_exec() sets the pointer in its 5th parameter to
** NULL before returning.
**
** ^If an sqlite3_exec() callback returns non-zero, the sqlite3_exec()
** routine returns SQLITE_ABORT without invoking the callback again and
** without running any subsequent SQL statements.
**
** ^The 2nd argument to the sqlite3_exec() callback function is the
** number of columns in the result.  ^The 3rd argument to the sqlite3_exec()
** callback is an array of pointers to strings obtained as if from
** [sqlite3_column_text()], one for each column.  ^If an element of a
** result row is NULL then the corresponding string pointer for the
** sqlite3_exec() callback is a NULL pointer.  ^The 4th argument to the
** sqlite3_exec() callback is an array of pointers to strings where each
** entry represents the name of corresponding result column as obtained
** from [sqlite3_column_name()].
**
** ^If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer
** to an empty string, or a pointer that contains only whitespace and/or 
** SQL comments, then no SQL statements are evaluated and the database
** is not changed.
**
** Restrictions:
**
** <ul>
** <li> The application must insure that the 1st parameter to sqlite3_exec()
**      is a valid and open [database connection].
** <li> The application must not close [database connection] specified by
**      the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.
** <li> The application must not modify the SQL statement text passed into
**      the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.
** </ul>
*/
SQLITE_API int sqlite3_exec(
  sqlite3*,                                  /* An open database */
  const char *sql,                           /* SQL to be evaluated */
  int (*callback)(void*,int,char**,char**),  /* Callback function */
  void *,                                    /* 1st argument to callback */
  char **errmsg                              /* Error msg written here */
);

/*
** CAPI3REF: Result Codes
** KEYWORDS: SQLITE_OK {error code} {error codes}
** KEYWORDS: {result code} {result codes}
**
** Many SQLite functions return an integer result code from the set shown
** here in order to indicates success or failure.
**
** New error codes may be added in future versions of SQLite.
**
** See also: [SQLITE_IOERR_READ | extended result codes]
*/
#define SQLITE_OK           0   /* Successful result */
/* beginning-of-error-codes */
#define SQLITE_ERROR        1   /* SQL error or missing database */
#define SQLITE_INTERNAL     2   /* Internal logic error in SQLite */
#define SQLITE_PERM         3   /* Access permission denied */
#define SQLITE_ABORT        4   /* Callback routine requested an abort */
#define SQLITE_BUSY         5   /* The database file is locked */
#define SQLITE_LOCKED       6   /* A table in the database is locked */
#define SQLITE_NOMEM        7   /* A malloc() failed */
#define SQLITE_READONLY     8   /* Attempt to write a readonly database */
#define SQLITE_INTERRUPT    9   /* Operation terminated by sqlite3_interrupt()*/
#define SQLITE_IOERR       10   /* Some kind of disk I/O error occurred */
#define SQLITE_CORRUPT     11   /* The database disk image is malformed */
#define SQLITE_NOTFOUND    12   /* NOT USED. Table or record not found */
#define SQLITE_FULL        13   /* Insertion failed because database is full */
#define SQLITE_CANTOPEN    14   /* Unable to open the database file */
#define SQLITE_PROTOCOL    15   /* NOT USED. Database lock protocol error */
#define SQLITE_EMPTY       16   /* Database is empty */
#define SQLITE_SCHEMA      17   /* The database schema changed */
#define SQLITE_TOOBIG      18   /* String or BLOB exceeds size limit */
#define SQLITE_CONSTRAINT  19   /* Abort due to constraint violation */
#define SQLITE_MISMATCH    20   /* Data type mismatch */
#define SQLITE_MISUSE      21   /* Library used incorrectly */
#define SQLITE_NOLFS       22   /* Uses OS features not supported on host */
#define SQLITE_AUTH        23   /* Authorization denied */
#define SQLITE_FORMAT      24   /* Auxiliary database format error */
#define SQLITE_RANGE       25   /* 2nd parameter to sqlite3_bind out of range */
#define SQLITE_NOTADB      26   /* File opened that is not a database file */
#define SQLITE_ROW         100  /* sqlite3_step() has another row ready */
#define SQLITE_DONE        101  /* sqlite3_step() has finished executing */
/* end-of-error-codes */

/*
** CAPI3REF: Extended Result Codes
** KEYWORDS: {extended error code} {extended error codes}
** KEYWORDS: {extended result code} {extended result codes}
**
** In its default configuration, SQLite API routines return one of 26 integer
** [SQLITE_OK | result codes].  However, experience has shown that many of
** these result codes are too coarse-grained.  They do not provide as
** much information about problems as programmers might like.  In an effort to
** address this, newer versions of SQLite (version 3.3.8 and later) include
** support for additional result codes that provide more detailed information
** about errors. The extended result codes are enabled or disabled
** on a per database connection basis using the
** [sqlite3_extended_result_codes()] API.
**
** Some of the available extended result codes are listed here.
** One may expect the number of extended result codes will be expand
** over time.  Software that uses extended result codes should expect
** to see new result codes in future releases of SQLite.
**
** The SQLITE_OK result code will never be extended.  It will always
** be exactly zero.
*/
#define SQLITE_IOERR_READ              (SQLITE_IOERR | (1<<8))
#define SQLITE_IOERR_SHORT_READ        (SQLITE_IOERR | (2<<8))
#define SQLITE_IOERR_WRITE             (SQLITE_IOERR | (3<<8))
#define SQLITE_IOERR_FSYNC             (SQLITE_IOERR | (4<<8))
#define SQLITE_IOERR_DIR_FSYNC         (SQLITE_IOERR | (5<<8))
#define SQLITE_IOERR_TRUNCATE          (SQLITE_IOERR | (6<<8))
#define SQLITE_IOERR_FSTAT             (SQLITE_IOERR | (7<<8))
#define SQLITE_IOERR_UNLOCK            (SQLITE_IOERR | (8<<8))
#define SQLITE_IOERR_RDLOCK            (SQLITE_IOERR | (9<<8))
#define SQLITE_IOERR_DELETE            (SQLITE_IOERR | (10<<8))
#define SQLITE_IOERR_BLOCKED           (SQLITE_IOERR | (11<<8))
#define SQLITE_IOERR_NOMEM             (SQLITE_IOERR | (12<<8))
#define SQLITE_IOERR_ACCESS            (SQLITE_IOERR | (13<<8))
#define SQLITE_IOERR_CHECKRESERVEDLOCK (SQLITE_IOERR | (14<<8))
#define SQLITE_IOERR_LOCK              (SQLITE_IOERR | (15<<8))
#define SQLITE_IOERR_CLOSE             (SQLITE_IOERR | (16<<8))
#define SQLITE_IOERR_DIR_CLOSE         (SQLITE_IOERR | (17<<8))
#define SQLITE_LOCKED_SHAREDCACHE      (SQLITE_LOCKED | (1<<8) )

/*
** CAPI3REF: Flags For File Open Operations
**
** These bit values are intended for use in the
** 3rd parameter to the [sqlite3_open_v2()] interface and
** in the 4th parameter to the xOpen method of the
** [sqlite3_vfs] object.
*/
#define SQLITE_OPEN_READONLY         0x00000001  /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_READWRITE        0x00000002  /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_CREATE           0x00000004  /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_DELETEONCLOSE    0x00000008  /* VFS only */
#define SQLITE_OPEN_EXCLUSIVE        0x00000010  /* VFS only */
#define SQLITE_OPEN_AUTOPROXY        0x00000020  /* VFS only */
#define SQLITE_OPEN_MAIN_DB          0x00000100  /* VFS only */
#define SQLITE_OPEN_TEMP_DB          0x00000200  /* VFS only */
#define SQLITE_OPEN_TRANSIENT_DB     0x00000400  /* VFS only */
#define SQLITE_OPEN_MAIN_JOURNAL     0x00000800  /* VFS only */
#define SQLITE_OPEN_TEMP_JOURNAL     0x00001000  /* VFS only */
#define SQLITE_OPEN_SUBJOURNAL       0x00002000  /* VFS only */
#define SQLITE_OPEN_MASTER_JOURNAL   0x00004000  /* VFS only */
#define SQLITE_OPEN_NOMUTEX          0x00008000  /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_FULLMUTEX        0x00010000  /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_SHAREDCACHE      0x00020000  /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_PRIVATECACHE     0x00040000  /* Ok for sqlite3_open_v2() */

/*
** CAPI3REF: Device Characteristics
**
** The xDeviceCapabilities method of the [sqlite3_io_methods]
** object returns an integer which is a vector of the these
** bit values expressing I/O characteristics of the mass storage
** device that holds the file that the [sqlite3_io_methods]
** refers to.
**
** The SQLITE_IOCAP_ATOMIC property means that all writes of
** any size are atomic.  The SQLITE_IOCAP_ATOMICnnn values
** mean that writes of blocks that are nnn bytes in size and
** are aligned to an address which is an integer multiple of
** nnn are atomic.  The SQLITE_IOCAP_SAFE_APPEND value means
** that when data is appended to a file, the data is appended
** first then the size of the file is extended, never the other
** way around.  The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
** to xWrite().
*/
#define SQLITE_IOCAP_ATOMIC          0x00000001
#define SQLITE_IOCAP_ATOMIC512       0x00000002
#define SQLITE_IOCAP_ATOMIC1K        0x00000004
#define SQLITE_IOCAP_ATOMIC2K        0x00000008
#define SQLITE_IOCAP_ATOMIC4K        0x00000010
#define SQLITE_IOCAP_ATOMIC8K        0x00000020
#define SQLITE_IOCAP_ATOMIC16K       0x00000040
#define SQLITE_IOCAP_ATOMIC32K       0x00000080
#define SQLITE_IOCAP_ATOMIC64K       0x00000100
#define SQLITE_IOCAP_SAFE_APPEND     0x00000200
#define SQLITE_IOCAP_SEQUENTIAL      0x00000400

/*
** CAPI3REF: File Locking Levels
**
** SQLite uses one of these integer values as the second
** argument to calls it makes to the xLock() and xUnlock() methods
** of an [sqlite3_io_methods] object.
*/
#define SQLITE_LOCK_NONE          0
#define SQLITE_LOCK_SHARED        1
#define SQLITE_LOCK_RESERVED      2
#define SQLITE_LOCK_PENDING       3
#define SQLITE_LOCK_EXCLUSIVE     4

/*
** CAPI3REF: Synchronization Type Flags
**
** When SQLite invokes the xSync() method of an
** [sqlite3_io_methods] object it uses a combination of
** these integer values as the second argument.
**
** When the SQLITE_SYNC_DATAONLY flag is used, it means that the
** sync operation only needs to flush data to mass storage.  Inode
** information need not be flushed. If the lower four bits of the flag
** equal SQLITE_SYNC_NORMAL, that means to use normal fsync() semantics.
** If the lower four bits equal SQLITE_SYNC_FULL, that means
** to use Mac OS X style fullsync instead of fsync().
*/
#define SQLITE_SYNC_NORMAL        0x00002
#define SQLITE_SYNC_FULL          0x00003
#define SQLITE_SYNC_DATAONLY      0x00010

/*
** CAPI3REF: OS Interface Open File Handle
**
** An [sqlite3_file] object represents an open file in the 
** [sqlite3_vfs | OS interface layer].  Individual OS interface
** implementations will
** want to subclass this object by appending additional fields
** for their own use.  The pMethods entry is a pointer to an
** [sqlite3_io_methods] object that defines methods for performing
** I/O operations on the open file.
*/
typedef struct sqlite3_file sqlite3_file;
struct sqlite3_file {
  const struct sqlite3_io_methods *pMethods;  /* Methods for an open file */
};

/*
** CAPI3REF: OS Interface File Virtual Methods Object
**
** Every file opened by the [sqlite3_vfs] xOpen method populates an
** [sqlite3_file] object (or, more commonly, a subclass of the
** [sqlite3_file] object) with a pointer to an instance of this object.
** This object defines the methods used to perform various operations
** against the open file represented by the [sqlite3_file] object.
**
** If the xOpen method sets the sqlite3_file.pMethods element 
** to a non-NULL pointer, then the sqlite3_io_methods.xClose method
** may be invoked even if the xOpen reported that it failed.  The
** only way to prevent a call to xClose following a failed xOpen
** is for the xOpen to set the sqlite3_file.pMethods element to NULL.
**
** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or
** [SQLITE_SYNC_FULL].  The first choice is the normal fsync().
** The second choice is a Mac OS X style fullsync.  The [SQLITE_SYNC_DATAONLY]
** flag may be ORed in to indicate that only the data of the file
** and not its inode needs to be synced.
**
** The integer values to xLock() and xUnlock() are one of
** <ul>
** <li> [SQLITE_LOCK_NONE],
** <li> [SQLITE_LOCK_SHARED],
** <li> [SQLITE_LOCK_RESERVED],
** <li> [SQLITE_LOCK_PENDING], or
** <li> [SQLITE_LOCK_EXCLUSIVE].
** </ul>
** xLock() increases the lock. xUnlock() decreases the lock.
** The xCheckReservedLock() method checks whether any database connection,
** either in this process or in some other process, is holding a RESERVED,
** PENDING, or EXCLUSIVE lock on the file.  It returns true
** if such a lock exists and false otherwise.
**
** The xFileControl() method is a generic interface that allows custom
** VFS implementations to directly control an open file using the
** [sqlite3_file_control()] interface.  The second "op" argument is an
** integer opcode.  The third argument is a generic pointer intended to
** point to a structure that may contain arguments or space in which to
** write return values.  Potential uses for xFileControl() might be
** functions to enable blocking locks with timeouts, to change the
** locking strategy (for example to use dot-file locks), to inquire
** about the status of a lock, or to break stale locks.  The SQLite
** core reserves all opcodes less than 100 for its own use.
** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available.
** Applications that define a custom xFileControl method should use opcodes
** greater than 100 to avoid conflicts.
**
** The xSectorSize() method returns the sector size of the
** device that underlies the file.  The sector size is the
** minimum write that can be performed without disturbing
** other bytes in the file.  The xDeviceCharacteristics()
** method returns a bit vector describing behaviors of the
** underlying device:
**
** <ul>
** <li> [SQLITE_IOCAP_ATOMIC]
** <li> [SQLITE_IOCAP_ATOMIC512]
** <li> [SQLITE_IOCAP_ATOMIC1K]
** <li> [SQLITE_IOCAP_ATOMIC2K]
** <li> [SQLITE_IOCAP_ATOMIC4K]
** <li> [SQLITE_IOCAP_ATOMIC8K]
** <li> [SQLITE_IOCAP_ATOMIC16K]
** <li> [SQLITE_IOCAP_ATOMIC32K]
** <li> [SQLITE_IOCAP_ATOMIC64K]
** <li> [SQLITE_IOCAP_SAFE_APPEND]
** <li> [SQLITE_IOCAP_SEQUENTIAL]
** </ul>
**
** The SQLITE_IOCAP_ATOMIC property means that all writes of
** any size are atomic.  The SQLITE_IOCAP_ATOMICnnn values
** mean that writes of blocks that are nnn bytes in size and
** are aligned to an address which is an integer multiple of
** nnn are atomic.  The SQLITE_IOCAP_SAFE_APPEND value means
** that when data is appended to a file, the data is appended
** first then the size of the file is extended, never the other
** way around.  The SQLITE_IOCAP_SEQUENTIAL property means that
** information is written to disk in the same order as calls
** to xWrite().
**
** If xRead() returns SQLITE_IOERR_SHORT_READ it must also fill
** in the unread portions of the buffer with zeros.  A VFS that
** fails to zero-fill short reads might seem to work.  However,
** failure to zero-fill short reads will eventually lead to
** database corruption.
*/
typedef struct sqlite3_io_methods sqlite3_io_methods;
struct sqlite3_io_methods {
  int iVersion;
  int (*xClose)(sqlite3_file*);
  int (*xRead)(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst);
  int (*xWrite)(sqlite3_file*, const void*, int iAmt, sqlite3_int64 iOfst);
  int (*xTruncate)(sqlite3_file*, sqlite3_int64 size);
  int (*xSync)(sqlite3_file*, int flags);
  int (*xFileSize)(sqlite3_file*, sqlite3_int64 *pSize);
  int (*xLock)(sqlite3_file*, int);
  int (*xUnlock)(sqlite3_file*, int);
  int (*xCheckReservedLock)(sqlite3_file*, int *pResOut);
  int (*xFileControl)(sqlite3_file*, int op, void *pArg);
  int (*xSectorSize)(sqlite3_file*);
  int (*xDeviceCharacteristics)(sqlite3_file*);
  /* Additional methods may be added in future releases */
};

/*
** CAPI3REF: Standard File Control Opcodes
**
** These integer constants are opcodes for the xFileControl method
** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()]
** interface.
**
** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging.  This
** opcode causes the xFileControl method to write the current state of
** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED],
** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE])
** into an integer that the pArg argument points to. This capability
** is used during testing and only needs to be supported when SQLITE_TEST
** is defined.
*/
#define SQLITE_FCNTL_LOCKSTATE        1
#define SQLITE_GET_LOCKPROXYFILE      2
#define SQLITE_SET_LOCKPROXYFILE      3
#define SQLITE_LAST_ERRNO             4

/*
** CAPI3REF: Mutex Handle
**
** The mutex module within SQLite defines [sqlite3_mutex] to be an
** abstract type for a mutex object.  The SQLite core never looks
** at the internal representation of an [sqlite3_mutex].  It only
** deals with pointers to the [sqlite3_mutex] object.
**
** Mutexes are created using [sqlite3_mutex_alloc()].
*/
typedef struct sqlite3_mutex sqlite3_mutex;

/*
** CAPI3REF: OS Interface Object
**
** An instance of the sqlite3_vfs object defines the interface between
** the SQLite core and the underlying operating system.  The "vfs"
** in the name of the object stands for "virtual file system".
**
** The value of the iVersion field is initially 1 but may be larger in
** future versions of SQLite.  Additional fields may be appended to this
** object when the iVersion value is increased.  Note that the structure
** of the sqlite3_vfs object changes in the transaction between
** SQLite version 3.5.9 and 3.6.0 and yet the iVersion field was not
** modified.
**
** The szOsFile field is the size of the subclassed [sqlite3_file]
** structure used by this VFS.  mxPathname is the maximum length of
** a pathname in this VFS.
**
** Registered sqlite3_vfs objects are kept on a linked list formed by
** the pNext pointer.  The [sqlite3_vfs_register()]
** and [sqlite3_vfs_unregister()] interfaces manage this list
** in a thread-safe way.  The [sqlite3_vfs_find()] interface
** searches the list.  Neither the application code nor the VFS
** implementation should use the pNext pointer.
**
** The pNext field is the only field in the sqlite3_vfs
** structure that SQLite will ever modify.  SQLite will only access
** or modify this field while holding a particular static mutex.
** The application should never modify anything within the sqlite3_vfs
** object once the object has been registered.
**
** The zName field holds the name of the VFS module.  The name must
** be unique across all VFS modules.
**
** SQLite will guarantee that the zFilename parameter to xOpen
** is either a NULL pointer or string obtained
** from xFullPathname().  SQLite further guarantees that
** the string will be valid and unchanged until xClose() is
** called. Because of the previous sentence,
** the [sqlite3_file] can safely store a pointer to the
** filename if it needs to remember the filename for some reason.
** If the zFilename parameter is xOpen is a NULL pointer then xOpen
** must invent its own temporary name for the file.  Whenever the 
** xFilename parameter is NULL it will also be the case that the
** flags parameter will include [SQLITE_OPEN_DELETEONCLOSE].
**
** The flags argument to xOpen() includes all bits set in
** the flags argument to [sqlite3_open_v2()].  Or if [sqlite3_open()]
** or [sqlite3_open16()] is used, then flags includes at least
** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. 
** If xOpen() opens a file read-only then it sets *pOutFlags to
** include [SQLITE_OPEN_READONLY].  Other bits in *pOutFlags may be set.
**
** SQLite will also add one of the following flags to the xOpen()
** call, depending on the object being opened:
**
** <ul>
** <li>  [SQLITE_OPEN_MAIN_DB]
** <li>  [SQLITE_OPEN_MAIN_JOURNAL]
** <li>  [SQLITE_OPEN_TEMP_DB]
** <li>  [SQLITE_OPEN_TEMP_JOURNAL]
** <li>  [SQLITE_OPEN_TRANSIENT_DB]
** <li>  [SQLITE_OPEN_SUBJOURNAL]
** <li>  [SQLITE_OPEN_MASTER_JOURNAL]
** </ul>
**
** The file I/O implementation can use the object type flags to
** change the way it deals with files.  For example, an application
** that does not care about crash recovery or rollback might make
** the open of a journal file a no-op.  Writes to this journal would
** also be no-ops, and any attempt to read the journal would return
** SQLITE_IOERR.  Or the implementation might recognize that a database
** file will be doing page-aligned sector reads and writes in a random
** order and set up its I/O subsystem accordingly.
**
** SQLite might also add one of the following flags to the xOpen method:
**
** <ul>
** <li> [SQLITE_OPEN_DELETEONCLOSE]
** <li> [SQLITE_OPEN_EXCLUSIVE]
** </ul>
**
** The [SQLITE_OPEN_DELETEONCLOSE] flag means the file should be
** deleted when it is closed.  The [SQLITE_OPEN_DELETEONCLOSE]
** will be set for TEMP  databases, journals and for subjournals.
**
** The [SQLITE_OPEN_EXCLUSIVE] flag is always used in conjunction
** with the [SQLITE_OPEN_CREATE] flag, which are both directly
** analogous to the O_EXCL and O_CREAT flags of the POSIX open()
** API.  The SQLITE_OPEN_EXCLUSIVE flag, when paired with the 
** SQLITE_OPEN_CREATE, is used to indicate that file should always
** be created, and that it is an error if it already exists.
** It is <i>not</i> used to indicate the file should be opened 
** for exclusive access.
**
** At least szOsFile bytes of memory are allocated by SQLite
** to hold the  [sqlite3_file] structure passed as the third
** argument to xOpen.  The xOpen method does not have to
** allocate the structure; it should just fill it in.  Note that
** the xOpen method must set the sqlite3_file.pMethods to either
** a valid [sqlite3_io_methods] object or to NULL.  xOpen must do
** this even if the open fails.  SQLite expects that the sqlite3_file.pMethods
** element will be valid after xOpen returns regardless of the success
** or failure of the xOpen call.
**
** The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS]
** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to
** test whether a file is readable and writable, or [SQLITE_ACCESS_READ]
** to test whether a file is at least readable.   The file can be a
** directory.
**
** SQLite will always allocate at least mxPathname+1 bytes for the
** output buffer xFullPathname.  The exact size of the output buffer
** is also passed as a parameter to both  methods. If the output buffer
** is not large enough, [SQLITE_CANTOPEN] should be returned. Since this is
** handled as a fatal error by SQLite, vfs implementations should endeavor
** to prevent this by setting mxPathname to a sufficiently large value.
**
** The xRandomness(), xSleep(), and xCurrentTime() interfaces
** are not strictly a part of the filesystem, but they are
** included in the VFS structure for completeness.
** The xRandomness() function attempts to return nBytes bytes
** of good-quality randomness into zOut.  The return value is
** the actual number of bytes of randomness obtained.
** The xSleep() method causes the calling thread to sleep for at
** least the number of microseconds given.  The xCurrentTime()
** method returns a Julian Day Number for the current date and time.
**
*/
typedef struct sqlite3_vfs sqlite3_vfs;
struct sqlite3_vfs {
  int iVersion;            /* Structure version number */
  int szOsFile;            /* Size of subclassed sqlite3_file */
  int mxPathname;          /* Maximum file pathname length */
  sqlite3_vfs *pNext;      /* Next registered VFS */
  const char *zName;       /* Name of this virtual file system */
  void *pAppData;          /* Pointer to application-specific data */
  int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*,
               int flags, int *pOutFlags);
  int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir);
  int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut);
  int (*xFullPathname)(sqlite3_vfs*, const char *zName, int nOut, char *zOut);
  void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename);
  void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg);
  void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void);
  void (*xDlClose)(sqlite3_vfs*, void*);
  int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut);
  int (*xSleep)(sqlite3_vfs*, int microseconds);
  int (*xCurrentTime)(sqlite3_vfs*, double*);
  int (*xGetLastError)(sqlite3_vfs*, int, char *);
  /* New fields may be appended in figure versions.  The iVersion
  ** value will increment whenever this happens. */
};

/*
** CAPI3REF: Flags for the xAccess VFS method
**
** These integer constants can be used as the third parameter to
** the xAccess method of an [sqlite3_vfs] object.  They determine
** what kind of permissions the xAccess method is looking for.
** With SQLITE_ACCESS_EXISTS, the xAccess method
** simply checks whether the file exists.
** With SQLITE_ACCESS_READWRITE, the xAccess method
** checks whether the file is both readable and writable.
** With SQLITE_ACCESS_READ, the xAccess method
** checks whether the file is readable.
*/
#define SQLITE_ACCESS_EXISTS    0
#define SQLITE_ACCESS_READWRITE 1
#define SQLITE_ACCESS_READ      2

/*
** CAPI3REF: Initialize The SQLite Library
**
** ^The sqlite3_initialize() routine initializes the
** SQLite library.  ^The sqlite3_shutdown() routine
** deallocates any resources that were allocated by sqlite3_initialize().
** These routines are designed to aid in process initialization and
** shutdown on embedded systems.  Workstation applications using
** SQLite normally do not need to invoke either of these routines.
**
** A call to sqlite3_initialize() is an "effective" call if it is
** the first time sqlite3_initialize() is invoked during the lifetime of
** the process, or if it is the first time sqlite3_initialize() is invoked
** following a call to sqlite3_shutdown().  ^(Only an effective call
** of sqlite3_initialize() does any initialization.  All other calls
** are harmless no-ops.)^
**
** A call to sqlite3_shutdown() is an "effective" call if it is the first
** call to sqlite3_shutdown() since the last sqlite3_initialize().  ^(Only
** an effective call to sqlite3_shutdown() does any deinitialization.
** All other valid calls to sqlite3_shutdown() are harmless no-ops.)^
**
** The sqlite3_initialize() interface is threadsafe, but sqlite3_shutdown()
** is not.  The sqlite3_shutdown() interface must only be called from a
** single thread.  All open [database connections] must be closed and all
** other SQLite resources must be deallocated prior to invoking
** sqlite3_shutdown().
**
** Among other things, ^sqlite3_initialize() will invoke
** sqlite3_os_init().  Similarly, ^sqlite3_shutdown()
** will invoke sqlite3_os_end().
**
** ^The sqlite3_initialize() routine returns [SQLITE_OK] on success.
** ^If for some reason, sqlite3_initialize() is unable to initialize
** the library (perhaps it is unable to allocate a needed resource such
** as a mutex) it returns an [error code] other than [SQLITE_OK].
**
** ^The sqlite3_initialize() routine is called internally by many other
** SQLite interfaces so that an application usually does not need to
** invoke sqlite3_initialize() directly.  For example, [sqlite3_open()]
** calls sqlite3_initialize() so the SQLite library will be automatically
** initialized when [sqlite3_open()] is called if it has not be initialized
** already.  ^However, if SQLite is compiled with the [SQLITE_OMIT_AUTOINIT]
** compile-time option, then the automatic calls to sqlite3_initialize()
** are omitted and the application must call sqlite3_initialize() directly
** prior to using any other SQLite interface.  For maximum portability,
** it is recommended that applications always invoke sqlite3_initialize()
** directly prior to using any other SQLite interface.  Future releases
** of SQLite may require this.  In other words, the behavior exhibited
** when SQLite is compiled with [SQLITE_OMIT_AUTOINIT] might become the
** default behavior in some future release of SQLite.
**
** The sqlite3_os_init() routine does operating-system specific
** initialization of the SQLite library.  The sqlite3_os_end()
** routine undoes the effect of sqlite3_os_init().  Typical tasks
** performed by these routines include allocation or deallocation
** of static resources, initialization of global variables,
** setting up a default [sqlite3_vfs] module, or setting up
** a default configuration using [sqlite3_config()].
**
** The application should never invoke either sqlite3_os_init()
** or sqlite3_os_end() directly.  The application should only invoke
** sqlite3_initialize() and sqlite3_shutdown().  The sqlite3_os_init()
** interface is called automatically by sqlite3_initialize() and
** sqlite3_os_end() is called by sqlite3_shutdown().  Appropriate
** implementations for sqlite3_os_init() and sqlite3_os_end()
** are built into SQLite when it is compiled for Unix, Windows, or OS/2.
** When [custom builds | built for other platforms]
** (using the [SQLITE_OS_OTHER=1] compile-time
** option) the application must supply a suitable implementation for
** sqlite3_os_init() and sqlite3_os_end().  An application-supplied
** implementation of sqlite3_os_init() or sqlite3_os_end()
** must return [SQLITE_OK] on success and some other [error code] upon
** failure.
*/
SQLITE_API int sqlite3_initialize(void);
SQLITE_API int sqlite3_shutdown(void);
SQLITE_API int sqlite3_os_init(void);
SQLITE_API int sqlite3_os_end(void);

/*
** CAPI3REF: Configuring The SQLite Library
**
** The sqlite3_config() interface is used to make global configuration
** changes to SQLite in order to tune SQLite to the specific needs of
** the application.  The default configuration is recommended for most
** applications and so this routine is usually not necessary.  It is
** provided to support rare applications with unusual needs.
**
** The sqlite3_config() interface is not threadsafe.  The application
** must insure that no other SQLite interfaces are invoked by other
** threads while sqlite3_config() is running.  Furthermore, sqlite3_config()
** may only be invoked prior to library initialization using
** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()].
** ^If sqlite3_config() is called after [sqlite3_initialize()] and before
** [sqlite3_shutdown()] then it will return SQLITE_MISUSE.
** Note, however, that ^sqlite3_config() can be called as part of the
** implementation of an application-defined [sqlite3_os_init()].
**
** The first argument to sqlite3_config() is an integer
** [SQLITE_CONFIG_SINGLETHREAD | configuration option] that determines
** what property of SQLite is to be configured.  Subsequent arguments
** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option]
** in the first argument.
**
** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK].
** ^If the option is unknown or SQLite is unable to set the option
** then this routine returns a non-zero [error code].
*/
SQLITE_API int sqlite3_config(int, ...);

/*
** CAPI3REF: Configure database connections
**
** The sqlite3_db_config() interface is used to make configuration
** changes to a [database connection].  The interface is similar to
** [sqlite3_config()] except that the changes apply to a single
** [database connection] (specified in the first argument).  The
** sqlite3_db_config() interface should only be used immediately after
** the database connection is created using [sqlite3_open()],
** [sqlite3_open16()], or [sqlite3_open_v2()].  
**
** The second argument to sqlite3_db_config(D,V,...)  is the
** configuration verb - an integer code that indicates what
** aspect of the [database connection] is being configured.
** The only choice for this value is [SQLITE_DBCONFIG_LOOKASIDE].
** New verbs are likely to be added in future releases of SQLite.
** Additional arguments depend on the verb.
**
** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
** the call is considered successful.
*/
SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...);

/*
** CAPI3REF: Memory Allocation Routines
**
** An instance of this object defines the interface between SQLite
** and low-level memory allocation routines.
**
** This object is used in only one place in the SQLite interface.
** A pointer to an instance of this object is the argument to
** [sqlite3_config()] when the configuration option is
** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC].  
** By creating an instance of this object
** and passing it to [sqlite3_config]([SQLITE_CONFIG_MALLOC])
** during configuration, an application can specify an alternative
** memory allocation subsystem for SQLite to use for all of its
** dynamic memory needs.
**
** Note that SQLite comes with several [built-in memory allocators]
** that are perfectly adequate for the overwhelming majority of applications
** and that this object is only useful to a tiny minority of applications
** with specialized memory allocation requirements.  This object is
** also used during testing of SQLite in order to specify an alternative
** memory allocator that simulates memory out-of-memory conditions in
** order to verify that SQLite recovers gracefully from such
** conditions.
**
** The xMalloc and xFree methods must work like the
** malloc() and free() functions from the standard C library.
** The xRealloc method must work like realloc() from the standard C library
** with the exception that if the second argument to xRealloc is zero,
** xRealloc must be a no-op - it must not perform any allocation or
** deallocation.  ^SQLite guarantees that the second argument to
** xRealloc is always a value returned by a prior call to xRoundup.
** And so in cases where xRoundup always returns a positive number,
** xRealloc can perform exactly as the standard library realloc() and
** still be in compliance with this specification.
**
** xSize should return the allocated size of a memory allocation
** previously obtained from xMalloc or xRealloc.  The allocated size
** is always at least as big as the requested size but may be larger.
**
** The xRoundup method returns what would be the allocated size of
** a memory allocation given a particular requested size.  Most memory
** allocators round up memory allocations at least to the next multiple
** of 8.  Some allocators round up to a larger multiple or to a power of 2.
** Every memory allocation request coming in through [sqlite3_malloc()]
** or [sqlite3_realloc()] first calls xRoundup.  If xRoundup returns 0, 
** that causes the corresponding memory allocation to fail.
**
** The xInit method initializes the memory allocator.  (For example,
** it might allocate any require mutexes or initialize internal data
** structures.  The xShutdown method is invoked (indirectly) by
** [sqlite3_shutdown()] and should deallocate any resources acquired
** by xInit.  The pAppData pointer is used as the only parameter to
** xInit and xShutdown.
**
** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes
** the xInit method, so the xInit method need not be threadsafe.  The
** xShutdown method is only called from [sqlite3_shutdown()] so it does
** not need to be threadsafe either.  For all other methods, SQLite
** holds the [SQLITE_MUTEX_STATIC_MEM] mutex as long as the
** [SQLITE_CONFIG_MEMSTATUS] configuration option is turned on (which
** it is by default) and so the methods are automatically serialized.
** However, if [SQLITE_CONFIG_MEMSTATUS] is disabled, then the other
** methods must be threadsafe or else make their own arrangements for
** serialization.
**
** SQLite will never invoke xInit() more than once without an intervening
** call to xShutdown().
*/
typedef struct sqlite3_mem_methods sqlite3_mem_methods;
struct sqlite3_mem_methods {
  void *(*xMalloc)(int);         /* Memory allocation function */
  void (*xFree)(void*);          /* Free a prior allocation */
  void *(*xRealloc)(void*,int);  /* Resize an allocation */
  int (*xSize)(void*);           /* Return the size of an allocation */
  int (*xRoundup)(int);          /* Round up request size to allocation size */
  int (*xInit)(void*);           /* Initialize the memory allocator */
  void (*xShutdown)(void*);      /* Deinitialize the memory allocator */
  void *pAppData;                /* Argument to xInit() and xShutdown() */
};

/*
** CAPI3REF: Configuration Options
**
** These constants are the available integer configuration options that
** can be passed as the first argument to the [sqlite3_config()] interface.
**
** New configuration options may be added in future releases of SQLite.
** Existing configuration options might be discontinued.  Applications
** should check the return code from [sqlite3_config()] to make sure that
** the call worked.  The [sqlite3_config()] interface will return a
** non-zero [error code] if a discontinued or unsupported configuration option
** is invoked.
**
** <dl>
** <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
** <dd>There are no arguments to this option.  ^This option sets the
** [threading mode] to Single-thread.  In other words, it disables
** all mutexing and puts SQLite into a mode where it can only be used
** by a single thread.   ^If SQLite is compiled with
** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
** it is not possible to change the [threading mode] from its default
** value of Single-thread and so [sqlite3_config()] will return 
** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD
** configuration option.</dd>
**
** <dt>SQLITE_CONFIG_MULTITHREAD</dt>
** <dd>There are no arguments to this option.  ^This option sets the
** [threading mode] to Multi-thread.  In other words, it disables
** mutexing on [database connection] and [prepared statement] objects.
** The application is responsible for serializing access to
** [database connections] and [prepared statements].  But other mutexes
** are enabled so that SQLite will be safe to use in a multi-threaded
** environment as long as no two threads attempt to use the same
** [database connection] at the same time.  ^If SQLite is compiled with
** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
** it is not possible to set the Multi-thread [threading mode] and
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_MULTITHREAD configuration option.</dd>
**
** <dt>SQLITE_CONFIG_SERIALIZED</dt>
** <dd>There are no arguments to this option.  ^This option sets the
** [threading mode] to Serialized. In other words, this option enables
** all mutexes including the recursive
** mutexes on [database connection] and [prepared statement] objects.
** In this mode (which is the default when SQLite is compiled with
** [SQLITE_THREADSAFE=1]) the SQLite library will itself serialize access
** to [database connections] and [prepared statements] so that the
** application is free to use the same [database connection] or the
** same [prepared statement] in different threads at the same time.
** ^If SQLite is compiled with
** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
** it is not possible to set the Serialized [threading mode] and
** [sqlite3_config()] will return [SQLITE_ERROR] if called with the
** SQLITE_CONFIG_SERIALIZED configuration option.</dd>
**
** <dt>SQLITE_CONFIG_MALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure.  The argument specifies
** alternative low-level memory allocation routines to be used in place of
** the memory allocation routines built into SQLite.)^ ^SQLite makes
** its own private copy of the content of the [sqlite3_mem_methods] structure
** before the [sqlite3_config()] call returns.</dd>
**
** <dt>SQLITE_CONFIG_GETMALLOC</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mem_methods] structure.  The [sqlite3_mem_methods]
** structure is filled with the currently defined memory allocation routines.)^
** This option can be used to overload the default memory allocation
** routines with a wrapper that simulations memory allocation failure or
** tracks memory usage, for example. </dd>
**
** <dt>SQLITE_CONFIG_MEMSTATUS</dt>
** <dd> ^This option takes single argument of type int, interpreted as a 
** boolean, which enables or disables the collection of memory allocation 
** statistics. ^(When memory allocation statistics are disabled, the 
** following SQLite interfaces become non-operational:
**   <ul>
**   <li> [sqlite3_memory_used()]
**   <li> [sqlite3_memory_highwater()]
**   <li> [sqlite3_soft_heap_limit()]
**   <li> [sqlite3_status()]
**   </ul>)^
** ^Memory allocation statistics are enabled by default unless SQLite is
** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory
** allocation statistics are disabled by default.
** </dd>
**
** <dt>SQLITE_CONFIG_SCRATCH</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** scratch memory.  There are three arguments:  A pointer an 8-byte
** aligned memory buffer from which the scrach allocations will be
** drawn, the size of each scratch allocation (sz),
** and the maximum number of scratch allocations (N).  The sz
** argument must be a multiple of 16. The sz parameter should be a few bytes
** larger than the actual scratch space required due to internal overhead.
** The first argument must be a pointer to an 8-byte aligned buffer
** of at least sz*N bytes of memory.
** ^SQLite will use no more than one scratch buffer per thread.  So
** N should be set to the expected maximum number of threads.  ^SQLite will
** never require a scratch buffer that is more than 6 times the database
** page size. ^If SQLite needs needs additional scratch memory beyond 
** what is provided by this configuration option, then 
** [sqlite3_malloc()] will be used to obtain the memory needed.</dd>
**
** <dt>SQLITE_CONFIG_PAGECACHE</dt>
** <dd> ^This option specifies a static memory buffer that SQLite can use for
** the database page cache with the default page cache implemenation.  
** This configuration should not be used if an application-define page
** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option.
** There are three arguments to this option: A pointer to 8-byte aligned
** memory, the size of each page buffer (sz), and the number of pages (N).
** The sz argument should be the size of the largest database page
** (a power of two between 512 and 32768) plus a little extra for each
** page header.  ^The page header size is 20 to 40 bytes depending on
** the host architecture.  ^It is harmless, apart from the wasted memory,
** to make sz a little too large.  The first
** argument should point to an allocation of at least sz*N bytes of memory.
** ^SQLite will use the memory provided by the first argument to satisfy its
** memory needs for the first N pages that it adds to cache.  ^If additional
** page cache memory is needed beyond what is provided by this option, then
** SQLite goes to [sqlite3_malloc()] for the additional storage space.
** ^The implementation might use one or more of the N buffers to hold 
** memory accounting information. The pointer in the first argument must
** be aligned to an 8-byte boundary or subsequent behavior of SQLite
** will be undefined.</dd>
**
** <dt>SQLITE_CONFIG_HEAP</dt>
** <dd> ^This option specifies a static memory buffer that SQLite will use
** for all of its dynamic memory allocation needs beyond those provided
** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE].
** There are three arguments: An 8-byte aligned pointer to the memory,
** the number of bytes in the memory buffer, and the minimum allocation size.
** ^If the first pointer (the memory pointer) is NULL, then SQLite reverts
** to using its default memory allocator (the system malloc() implementation),
** undoing any prior invocation of [SQLITE_CONFIG_MALLOC].  ^If the
** memory pointer is not NULL and either [SQLITE_ENABLE_MEMSYS3] or
** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory
** allocator is engaged to handle all of SQLites memory allocation needs.
** The first pointer (the memory pointer) must be aligned to an 8-byte
** boundary or subsequent behavior of SQLite will be undefined.</dd>
**
** <dt>SQLITE_CONFIG_MUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure.  The argument specifies
** alternative low-level mutex routines to be used in place
** the mutex routines built into SQLite.)^  ^SQLite makes a copy of the
** content of the [sqlite3_mutex_methods] structure before the call to
** [sqlite3_config()] returns. ^If SQLite is compiled with
** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
** the entire mutexing subsystem is omitted from the build and hence calls to
** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
** <dt>SQLITE_CONFIG_GETMUTEX</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** instance of the [sqlite3_mutex_methods] structure.  The
** [sqlite3_mutex_methods]
** structure is filled with the currently defined mutex routines.)^
** This option can be used to overload the default mutex allocation
** routines with a wrapper used to track mutex usage for performance
** profiling or testing, for example.   ^If SQLite is compiled with
** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
** the entire mutexing subsystem is omitted from the build and hence calls to
** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will
** return [SQLITE_ERROR].</dd>
**
** <dt>SQLITE_CONFIG_LOOKASIDE</dt>
** <dd> ^(This option takes two arguments that determine the default
** memory allocation for the lookaside memory allocator on each
** [database connection].  The first argument is the
** size of each lookaside buffer slot and the second is the number of
** slots allocated to each database connection.)^  ^(This option sets the
** <i>default</i> lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE]
** verb to [sqlite3_db_config()] can be used to change the lookaside
** configuration on individual connections.)^ </dd>
**
** <dt>SQLITE_CONFIG_PCACHE</dt>
** <dd> ^(This option takes a single argument which is a pointer to
** an [sqlite3_pcache_methods] object.  This object specifies the interface
** to a custom page cache implementation.)^  ^SQLite makes a copy of the
** object and uses it for page cache memory allocations.</dd>
**
** <dt>SQLITE_CONFIG_GETPCACHE</dt>
** <dd> ^(This option takes a single argument which is a pointer to an
** [sqlite3_pcache_methods] object.  SQLite copies of the current
** page cache implementation into that object.)^ </dd>
**
** <dt>SQLITE_CONFIG_LOG</dt>
** <dd> ^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a
** function with a call signature of void(*)(void*,int,const char*), 
** and a pointer to void. ^If the function pointer is not NULL, it is
** invoked by [sqlite3_log()] to process each logging event.  ^If the
** function pointer is NULL, the [sqlite3_log()] interface becomes a no-op.
** ^The void pointer that is the second argument to SQLITE_CONFIG_LOG is
** passed through as the first parameter to the application-defined logger
** function whenever that function is invoked.  ^The second parameter to
** the logger function is a copy of the first parameter to the corresponding
** [sqlite3_log()] call and is intended to be a [result code] or an
** [extended result code].  ^The third parameter passed to the logger is
** log message after formatting via [sqlite3_snprintf()].
** The SQLite logging interface is not reentrant; the logger function
** supplied by the application must not invoke any SQLite interface.
** In a multi-threaded application, the application-defined logger
** function must be threadsafe. </dd>
**
** </dl>
*/
#define SQLITE_CONFIG_SINGLETHREAD  1  /* nil */
#define SQLITE_CONFIG_MULTITHREAD   2  /* nil */
#define SQLITE_CONFIG_SERIALIZED    3  /* nil */
#define SQLITE_CONFIG_MALLOC        4  /* sqlite3_mem_methods* */
#define SQLITE_CONFIG_GETMALLOC     5  /* sqlite3_mem_methods* */
#define SQLITE_CONFIG_SCRATCH       6  /* void*, int sz, int N */
#define SQLITE_CONFIG_PAGECACHE     7  /* void*, int sz, int N */
#define SQLITE_CONFIG_HEAP          8  /* void*, int nByte, int min */
#define SQLITE_CONFIG_MEMSTATUS     9  /* boolean */
#define SQLITE_CONFIG_MUTEX        10  /* sqlite3_mutex_methods* */
#define SQLITE_CONFIG_GETMUTEX     11  /* sqlite3_mutex_methods* */
/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */ 
#define SQLITE_CONFIG_LOOKASIDE    13  /* int int */
#define SQLITE_CONFIG_PCACHE       14  /* sqlite3_pcache_methods* */
#define SQLITE_CONFIG_GETPCACHE    15  /* sqlite3_pcache_methods* */
#define SQLITE_CONFIG_LOG          16  /* xFunc, void* */

/*
** CAPI3REF: Database Connection Configuration Options
**
** These constants are the available integer configuration options that
** can be passed as the second argument to the [sqlite3_db_config()] interface.
**
** New configuration options may be added in future releases of SQLite.
** Existing configuration options might be discontinued.  Applications
** should check the return code from [sqlite3_db_config()] to make sure that
** the call worked.  ^The [sqlite3_db_config()] interface will return a
** non-zero [error code] if a discontinued or unsupported configuration option
** is invoked.
**
** <dl>
** <dt>SQLITE_DBCONFIG_LOOKASIDE</dt>
** <dd> ^This option takes three additional arguments that determine the 
** [lookaside memory allocator] configuration for the [database connection].
** ^The first argument (the third parameter to [sqlite3_db_config()] is a
** pointer to an memory buffer to use for lookaside memory.
** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb
** may be NULL in which case SQLite will allocate the
** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the
** size of each lookaside buffer slot.  ^The third argument is the number of
** slots.  The size of the buffer in the first argument must be greater than
** or equal to the product of the second and third arguments.  The buffer
** must be aligned to an 8-byte boundary.  ^If the second argument to
** SQLITE_DBCONFIG_LOOKASIDE is not a multiple of 8, it is internally
** rounded down to the next smaller
** multiple of 8.  See also: [SQLITE_CONFIG_LOOKASIDE]</dd>
**
** </dl>
*/
#define SQLITE_DBCONFIG_LOOKASIDE    1001  /* void* int int */


/*
** CAPI3REF: Enable Or Disable Extended Result Codes
**
** ^The sqlite3_extended_result_codes() routine enables or disables the
** [extended result codes] feature of SQLite. ^The extended result
** codes are disabled by default for historical compatibility.
*/
SQLITE_API int sqlite3_extended_result_codes(sqlite3*, int onoff);

/*
** CAPI3REF: Last Insert Rowid
**
** ^Each entry in an SQLite table has a unique 64-bit signed
** integer key called the [ROWID | "rowid"]. ^The rowid is always available
** as an undeclared column named ROWID, OID, or _ROWID_ as long as those
** names are not also used by explicitly declared columns. ^If
** the table has a column of type [INTEGER PRIMARY KEY] then that column
** is another alias for the rowid.
**
** ^This routine returns the [rowid] of the most recent
** successful [INSERT] into the database from the [database connection]
** in the first argument.  ^If no successful [INSERT]s
** have ever occurred on that database connection, zero is returned.
**
** ^(If an [INSERT] occurs within a trigger, then the [rowid] of the inserted
** row is returned by this routine as long as the trigger is running.
** But once the trigger terminates, the value returned by this routine
** reverts to the last value inserted before the trigger fired.)^
**
** ^An [INSERT] that fails due to a constraint violation is not a
** successful [INSERT] and does not change the value returned by this
** routine.  ^Thus INSERT OR FAIL, INSERT OR IGNORE, INSERT OR ROLLBACK,
** and INSERT OR ABORT make no changes to the return value of this
** routine when their insertion fails.  ^(When INSERT OR REPLACE
** encounters a constraint violation, it does not fail.  The
** INSERT continues to completion after deleting rows that caused
** the constraint problem so INSERT OR REPLACE will always change
** the return value of this interface.)^
**
** ^For the purposes of this routine, an [INSERT] is considered to
** be successful even if it is subsequently rolled back.
**
** This function is accessible to SQL statements via the
** [last_insert_rowid() SQL function].
**
** If a separate thread performs a new [INSERT] on the same
** database connection while the [sqlite3_last_insert_rowid()]
** function is running and thus changes the last insert [rowid],
** then the value returned by [sqlite3_last_insert_rowid()] is
** unpredictable and might not equal either the old or the new
** last insert [rowid].
*/
SQLITE_API sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*);

/*
** CAPI3REF: Count The Number Of Rows Modified
**
** ^This function returns the number of database rows that were changed
** or inserted or deleted by the most recently completed SQL statement
** on the [database connection] specified by the first parameter.
** ^(Only changes that are directly specified by the [INSERT], [UPDATE],
** or [DELETE] statement are counted.  Auxiliary changes caused by
** triggers or [foreign key actions] are not counted.)^ Use the
** [sqlite3_total_changes()] function to find the total number of changes
** including changes caused by triggers and foreign key actions.
**
** ^Changes to a view that are simulated by an [INSTEAD OF trigger]
** are not counted.  Only real table changes are counted.
**
** ^(A "row change" is a change to a single row of a single table
** caused by an INSERT, DELETE, or UPDATE statement.  Rows that
** are changed as side effects of [REPLACE] constraint resolution,
** rollback, ABORT processing, [DROP TABLE], or by any other
** mechanisms do not count as direct row changes.)^
**
** A "trigger context" is a scope of execution that begins and
** ends with the script of a [CREATE TRIGGER | trigger]. 
** Most SQL statements are
** evaluated outside of any trigger.  This is the "top level"
** trigger context.  If a trigger fires from the top level, a
** new trigger context is entered for the duration of that one
** trigger.  Subtriggers create subcontexts for their duration.
**
** ^Calling [sqlite3_exec()] or [sqlite3_step()] recursively does
** not create a new trigger context.
**
** ^This function returns the number of direct row changes in the
** most recent INSERT, UPDATE, or DELETE statement within the same
** trigger context.
**
** ^Thus, when called from the top level, this function returns the
** number of changes in the most recent INSERT, UPDATE, or DELETE
** that also occurred at the top level.  ^(Within the body of a trigger,
** the sqlite3_changes() interface can be called to find the number of
** changes in the most recently completed INSERT, UPDATE, or DELETE
** statement within the body of the same trigger.
** However, the number returned does not include changes
** caused by subtriggers since those have their own context.)^
**
** See also the [sqlite3_total_changes()] interface, the
** [count_changes pragma], and the [changes() SQL function].
**
** If a separate thread makes changes on the same database connection
** while [sqlite3_changes()] is running then the value returned
** is unpredictable and not meaningful.
*/
SQLITE_API int sqlite3_changes(sqlite3*);

/*
** CAPI3REF: Total Number Of Rows Modified
**
** ^This function returns the number of row changes caused by [INSERT],
** [UPDATE] or [DELETE] statements since the [database connection] was opened.
** ^(The count returned by sqlite3_total_changes() includes all changes
** from all [CREATE TRIGGER | trigger] contexts and changes made by
** [foreign key actions]. However,
** the count does not include changes used to implement [REPLACE] constraints,
** do rollbacks or ABORT processing, or [DROP TABLE] processing.  The
** count does not include rows of views that fire an [INSTEAD OF trigger],
** though if the INSTEAD OF trigger makes changes of its own, those changes 
** are counted.)^
** ^The sqlite3_total_changes() function counts the changes as soon as
** the statement that makes them is completed (when the statement handle
** is passed to [sqlite3_reset()] or [sqlite3_finalize()]).
**
** See also the [sqlite3_changes()] interface, the
** [count_changes pragma], and the [total_changes() SQL function].
**
** If a separate thread makes changes on the same database connection
** while [sqlite3_total_changes()] is running then the value
** returned is unpredictable and not meaningful.
*/
SQLITE_API int sqlite3_total_changes(sqlite3*);

/*
** CAPI3REF: Interrupt A Long-Running Query
**
** ^This function causes any pending database operation to abort and
** return at its earliest opportunity. This routine is typically
** called in response to a user action such as pressing "Cancel"
** or Ctrl-C where the user wants a long query operation to halt
** immediately.
**
** ^It is safe to call this routine from a thread different from the
** thread that is currently running the database operation.  But it
** is not safe to call this routine with a [database connection] that
** is closed or might close before sqlite3_interrupt() returns.
**
** ^If an SQL operation is very nearly finished at the time when
** sqlite3_interrupt() is called, then it might not have an opportunity
** to be interrupted and might continue to completion.
**
** ^An SQL operation that is interrupted will return [SQLITE_INTERRUPT].
** ^If the interrupted SQL operation is an INSERT, UPDATE, or DELETE
** that is inside an explicit transaction, then the entire transaction
** will be rolled back automatically.
**
** ^The sqlite3_interrupt(D) call is in effect until all currently running
** SQL statements on [database connection] D complete.  ^Any new SQL statements
** that are started after the sqlite3_interrupt() call and before the 
** running statements reaches zero are interrupted as if they had been
** running prior to the sqlite3_interrupt() call.  ^New SQL statements
** that are started after the running statement count reaches zero are
** not effected by the sqlite3_interrupt().
** ^A call to sqlite3_interrupt(D) that occurs when there are no running
** SQL statements is a no-op and has no effect on SQL statements
** that are started after the sqlite3_interrupt() call returns.
**
** If the database connection closes while [sqlite3_interrupt()]
** is running then bad things will likely happen.
*/
SQLITE_API void sqlite3_interrupt(sqlite3*);

/*
** CAPI3REF: Determine If An SQL Statement Is Complete
**
** These routines are useful during command-line input to determine if the
** currently entered text seems to form a complete SQL statement or
** if additional input is needed before sending the text into
** SQLite for parsing.  ^These routines return 1 if the input string
** appears to be a complete SQL statement.  ^A statement is judged to be
** complete if it ends with a semicolon token and is not a prefix of a
** well-formed CREATE TRIGGER statement.  ^Semicolons that are embedded within
** string literals or quoted identifier names or comments are not
** independent tokens (they are part of the token in which they are
** embedded) and thus do not count as a statement terminator.  ^Whitespace
** and comments that follow the final semicolon are ignored.
**
** ^These routines return 0 if the statement is incomplete.  ^If a
** memory allocation fails, then SQLITE_NOMEM is returned.
**
** ^These routines do not parse the SQL statements thus
** will not detect syntactically incorrect SQL.
**
** ^(If SQLite has not been initialized using [sqlite3_initialize()] prior 
** to invoking sqlite3_complete16() then sqlite3_initialize() is invoked
** automatically by sqlite3_complete16().  If that initialization fails,
** then the return value from sqlite3_complete16() will be non-zero
** regardless of whether or not the input SQL is complete.)^
**
** The input to [sqlite3_complete()] must be a zero-terminated
** UTF-8 string.
**
** The input to [sqlite3_complete16()] must be a zero-terminated
** UTF-16 string in native byte order.
*/
SQLITE_API int sqlite3_complete(const char *sql);
SQLITE_API int sqlite3_complete16(const void *sql);

/*
** CAPI3REF: Register A Callback To Handle SQLITE_BUSY Errors
**
** ^This routine sets a callback function that might be invoked whenever
** an attempt is made to open a database table that another thread
** or process has locked.
**
** ^If the busy callback is NULL, then [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED]
** is returned immediately upon encountering the lock.  ^If the busy callback
** is not NULL, then the callback might be invoked with two arguments.
**
** ^The first argument to the busy handler is a copy of the void* pointer which
** is the third argument to sqlite3_busy_handler().  ^The second argument to
** the busy handler callback is the number of times that the busy handler has
** been invoked for this locking event.  ^If the
** busy callback returns 0, then no additional attempts are made to
** access the database and [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] is returned.
** ^If the callback returns non-zero, then another attempt
** is made to open the database for reading and the cycle repeats.
**
** The presence of a busy handler does not guarantee that it will be invoked
** when there is lock contention. ^If SQLite determines that invoking the busy
** handler could result in a deadlock, it will go ahead and return [SQLITE_BUSY]
** or [SQLITE_IOERR_BLOCKED] instead of invoking the busy handler.
** Consider a scenario where one process is holding a read lock that
** it is trying to promote to a reserved lock and
** a second process is holding a reserved lock that it is trying
** to promote to an exclusive lock.  The first process cannot proceed
** because it is blocked by the second and the second process cannot
** proceed because it is blocked by the first.  If both processes
** invoke the busy handlers, neither will make any progress.  Therefore,
** SQLite returns [SQLITE_BUSY] for the first process, hoping that this
** will induce the first process to release its read lock and allow
** the second process to proceed.
**
** ^The default busy callback is NULL.
**
** ^The [SQLITE_BUSY] error is converted to [SQLITE_IOERR_BLOCKED]
** when SQLite is in the middle of a large transaction where all the
** changes will not fit into the in-memory cache.  SQLite will
** already hold a RESERVED lock on the database file, but it needs
** to promote this lock to EXCLUSIVE so that it can spill cache
** pages into the database file without harm to concurrent
** readers.  ^If it is unable to promote the lock, then the in-memory
** cache will be left in an inconsistent state and so the error
** code is promoted from the relatively benign [SQLITE_BUSY] to
** the more severe [SQLITE_IOERR_BLOCKED].  ^This error code promotion
** forces an automatic rollback of the changes.  See the
** <a href="/cvstrac/wiki?p=CorruptionFollowingBusyError">
** CorruptionFollowingBusyError</a> wiki page for a discussion of why
** this is important.
**
** ^(There can only be a single busy handler defined for each
** [database connection].  Setting a new busy handler clears any
** previously set handler.)^  ^Note that calling [sqlite3_busy_timeout()]
** will also set or clear the busy handler.
**
** The busy callback should not take any actions which modify the
** database connection that invoked the busy handler.  Any such actions
** result in undefined behavior.
** 
** A busy handler must not close the database connection
** or [prepared statement] that invoked the busy handler.
*/
SQLITE_API int sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*);

/*
** CAPI3REF: Set A Busy Timeout
**
** ^This routine sets a [sqlite3_busy_handler | busy handler] that sleeps
** for a specified amount of time when a table is locked.  ^The handler
** will sleep multiple times until at least "ms" milliseconds of sleeping
** have accumulated.  ^After at least "ms" milliseconds of sleeping,
** the handler returns 0 which causes [sqlite3_step()] to return
** [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED].
**
** ^Calling this routine with an argument less than or equal to zero
** turns off all busy handlers.
**
** ^(There can only be a single busy handler for a particular
** [database connection] any any given moment.  If another busy handler
** was defined  (using [sqlite3_busy_handler()]) prior to calling
** this routine, that other busy handler is cleared.)^
*/
SQLITE_API int sqlite3_busy_timeout(sqlite3*, int ms);

/*
** CAPI3REF: Convenience Routines For Running Queries
**
** Definition: A <b>result table</b> is memory data structure created by the
** [sqlite3_get_table()] interface.  A result table records the
** complete query results from one or more queries.
**
** The table conceptually has a number of rows and columns.  But
** these numbers are not part of the result table itself.  These
** numbers are obtained separately.  Let N be the number of rows
** and M be the number of columns.
**
** A result table is an array of pointers to zero-terminated UTF-8 strings.
** There are (N+1)*M elements in the array.  The first M pointers point
** to zero-terminated strings that  contain the names of the columns.
** The remaining entries all point to query results.  NULL values result
** in NULL pointers.  All other values are in their UTF-8 zero-terminated
** string representation as returned by [sqlite3_column_text()].
**
** A result table might consist of one or more memory allocations.
** It is not safe to pass a result table directly to [sqlite3_free()].
** A result table should be deallocated using [sqlite3_free_table()].
**
** As an example of the result table format, suppose a query result
** is as follows:
**
** <blockquote><pre>
**        Name        | Age
**        -----------------------
**        Alice       | 43
**        Bob         | 28
**        Cindy       | 21
** </pre></blockquote>
**
** There are two column (M==2) and three rows (N==3).  Thus the
** result table has 8 entries.  Suppose the result table is stored
** in an array names azResult.  Then azResult holds this content:
**
** <blockquote><pre>
**        azResult&#91;0] = "Name";
**        azResult&#91;1] = "Age";
**        azResult&#91;2] = "Alice";
**        azResult&#91;3] = "43";
**        azResult&#91;4] = "Bob";
**        azResult&#91;5] = "28";
**        azResult&#91;6] = "Cindy";
**        azResult&#91;7] = "21";
** </pre></blockquote>
**
** ^The sqlite3_get_table() function evaluates one or more
** semicolon-separated SQL statements in the zero-terminated UTF-8
** string of its 2nd parameter and returns a result table to the
** pointer given in its 3rd parameter.
**
** After the application has finished with the result from sqlite3_get_table(),
** it should pass the result table pointer to sqlite3_free_table() in order to
** release the memory that was malloced.  Because of the way the
** [sqlite3_malloc()] happens within sqlite3_get_table(), the calling
** function must not try to call [sqlite3_free()] directly.  Only
** [sqlite3_free_table()] is able to release the memory properly and safely.
**
** ^(The sqlite3_get_table() interface is implemented as a wrapper around
** [sqlite3_exec()].  The sqlite3_get_table() routine does not have access
** to any internal data structures of SQLite.  It uses only the public
** interface defined here.  As a consequence, errors that occur in the
** wrapper layer outside of the internal [sqlite3_exec()] call are not
** reflected in subsequent calls to [sqlite3_errcode()] or
** [sqlite3_errmsg()].)^
*/
SQLITE_API int sqlite3_get_table(
  sqlite3 *db,          /* An open database */
  const char *zSql,     /* SQL to be evaluated */
  char ***pazResult,    /* Results of the query */
  int *pnRow,           /* Number of result rows written here */
  int *pnColumn,        /* Number of result columns written here */
  char **pzErrmsg       /* Error msg written here */
);
SQLITE_API void sqlite3_free_table(char **result);

/*
** CAPI3REF: Formatted String Printing Functions
**
** These routines are work-alikes of the "printf()" family of functions
** from the standard C library.
**
** ^The sqlite3_mprintf() and sqlite3_vmprintf() routines write their
** results into memory obtained from [sqlite3_malloc()].
** The strings returned by these two routines should be
** released by [sqlite3_free()].  ^Both routines return a
** NULL pointer if [sqlite3_malloc()] is unable to allocate enough
** memory to hold the resulting string.
**
** ^(In sqlite3_snprintf() routine is similar to "snprintf()" from
** the standard C library.  The result is written into the
** buffer supplied as the second parameter whose size is given by
** the first parameter. Note that the order of the
** first two parameters is reversed from snprintf().)^  This is an
** historical accident that cannot be fixed without breaking
** backwards compatibility.  ^(Note also that sqlite3_snprintf()
** returns a pointer to its buffer instead of the number of
** characters actually written into the buffer.)^  We admit that
** the number of characters written would be a more useful return
** value but we cannot change the implementation of sqlite3_snprintf()
** now without breaking compatibility.
**
** ^As long as the buffer size is greater than zero, sqlite3_snprintf()
** guarantees that the buffer is always zero-terminated.  ^The first
** parameter "n" is the total size of the buffer, including space for
** the zero terminator.  So the longest string that can be completely
** written will be n-1 characters.
**
** These routines all implement some additional formatting
** options that are useful for constructing SQL statements.
** All of the usual printf() formatting options apply.  In addition, there
** is are "%q", "%Q", and "%z" options.
**
** ^(The %q option works like %s in that it substitutes a null-terminated
** string from the argument list.  But %q also doubles every '\'' character.
** %q is designed for use inside a string literal.)^  By doubling each '\''
** character it escapes that character and allows it to be inserted into
** the string.
**
** For example, assume the string variable zText contains text as follows:
**
** <blockquote><pre>
**  char *zText = "It's a happy day!";
** </pre></blockquote>
**
** One can use this text in an SQL statement as follows:
**
** <blockquote><pre>
**  char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES('%q')", zText);
**  sqlite3_exec(db, zSQL, 0, 0, 0);
**  sqlite3_free(zSQL);
** </pre></blockquote>
**
** Because the %q format string is used, the '\'' character in zText
** is escaped and the SQL generated is as follows:
**
** <blockquote><pre>
**  INSERT INTO table1 VALUES('It''s a happy day!')
** </pre></blockquote>
**
** This is correct.  Had we used %s instead of %q, the generated SQL
** would have looked like this:
**
** <blockquote><pre>
**  INSERT INTO table1 VALUES('It's a happy day!');
** </pre></blockquote>
**
** This second example is an SQL syntax error.  As a general rule you should
** always use %q instead of %s when inserting text into a string literal.
**
** ^(The %Q option works like %q except it also adds single quotes around
** the outside of the total string.  Additionally, if the parameter in the
** argument list is a NULL pointer, %Q substitutes the text "NULL" (without
** single quotes).)^  So, for example, one could say:
**
** <blockquote><pre>
**  char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES(%Q)", zText);
**  sqlite3_exec(db, zSQL, 0, 0, 0);
**  sqlite3_free(zSQL);
** </pre></blockquote>
**
** The code above will render a correct SQL statement in the zSQL
** variable even if the zText variable is a NULL pointer.
**
** ^(The "%z" formatting option works like "%s" but with the
** addition that after the string has been read and copied into
** the result, [sqlite3_free()] is called on the input string.)^
*/
SQLITE_API char *sqlite3_mprintf(const char*,...);
SQLITE_API char *sqlite3_vmprintf(const char*, va_list);
SQLITE_API char *sqlite3_snprintf(int,char*,const char*, ...);

/*
** CAPI3REF: Memory Allocation Subsystem
**
** The SQLite core uses these three routines for all of its own
** internal memory allocation needs. "Core" in the previous sentence
** does not include operating-system specific VFS implementation.  The
** Windows VFS uses native malloc() and free() for some operations.
**
** ^The sqlite3_malloc() routine returns a pointer to a block
** of memory at least N bytes in length, where N is the parameter.
** ^If sqlite3_malloc() is unable to obtain sufficient free
** memory, it returns a NULL pointer.  ^If the parameter N to
** sqlite3_malloc() is zero or negative then sqlite3_malloc() returns
** a NULL pointer.
**
** ^Calling sqlite3_free() with a pointer previously returned
** by sqlite3_malloc() or sqlite3_realloc() releases that memory so
** that it might be reused.  ^The sqlite3_free() routine is
** a no-op if is called with a NULL pointer.  Passing a NULL pointer
** to sqlite3_free() is harmless.  After being freed, memory
** should neither be read nor written.  Even reading previously freed
** memory might result in a segmentation fault or other severe error.
** Memory corruption, a segmentation fault, or other severe error
** might result if sqlite3_free() is called with a non-NULL pointer that
** was not obtained from sqlite3_malloc() or sqlite3_realloc().
**
** ^(The sqlite3_realloc() interface attempts to resize a
** prior memory allocation to be at least N bytes, where N is the
** second parameter.  The memory allocation to be resized is the first
** parameter.)^ ^ If the first parameter to sqlite3_realloc()
** is a NULL pointer then its behavior is identical to calling
** sqlite3_malloc(N) where N is the second parameter to sqlite3_realloc().
** ^If the second parameter to sqlite3_realloc() is zero or
** negative then the behavior is exactly the same as calling
** sqlite3_free(P) where P is the first parameter to sqlite3_realloc().
** ^sqlite3_realloc() returns a pointer to a memory allocation
** of at least N bytes in size or NULL if sufficient memory is unavailable.
** ^If M is the size of the prior allocation, then min(N,M) bytes
** of the prior allocation are copied into the beginning of buffer returned
** by sqlite3_realloc() and the prior allocation is freed.
** ^If sqlite3_realloc() returns NULL, then the prior allocation
** is not freed.
**
** ^The memory returned by sqlite3_malloc() and sqlite3_realloc()
** is always aligned to at least an 8 byte boundary.
**
** In SQLite version 3.5.0 and 3.5.1, it was possible to define
** the SQLITE_OMIT_MEMORY_ALLOCATION which would cause the built-in
** implementation of these routines to be omitted.  That capability
** is no longer provided.  Only built-in memory allocators can be used.
**
** The Windows OS interface layer calls
** the system malloc() and free() directly when converting
** filenames between the UTF-8 encoding used by SQLite
** and whatever filename encoding is used by the particular Windows
** installation.  Memory allocation errors are detected, but
** they are reported back as [SQLITE_CANTOPEN] or
** [SQLITE_IOERR] rather than [SQLITE_NOMEM].
**
** The pointer arguments to [sqlite3_free()] and [sqlite3_realloc()]
** must be either NULL or else pointers obtained from a prior
** invocation of [sqlite3_malloc()] or [sqlite3_realloc()] that have
** not yet been released.
**
** The application must not read or write any part of
** a block of memory after it has been released using
** [sqlite3_free()] or [sqlite3_realloc()].
*/
SQLITE_API void *sqlite3_malloc(int);
SQLITE_API void *sqlite3_realloc(void*, int);
SQLITE_API void sqlite3_free(void*);

/*
** CAPI3REF: Memory Allocator Statistics
**
** SQLite provides these two interfaces for reporting on the status
** of the [sqlite3_malloc()], [sqlite3_free()], and [sqlite3_realloc()]
** routines, which form the built-in memory allocation subsystem.
**
** ^The [sqlite3_memory_used()] routine returns the number of bytes
** of memory currently outstanding (malloced but not freed).
** ^The [sqlite3_memory_highwater()] routine returns the maximum
** value of [sqlite3_memory_used()] since the high-water mark
** was last reset.  ^The values returned by [sqlite3_memory_used()] and
** [sqlite3_memory_highwater()] include any overhead
** added by SQLite in its implementation of [sqlite3_malloc()],
** but not overhead added by the any underlying system library
** routines that [sqlite3_malloc()] may call.
**
** ^The memory high-water mark is reset to the current value of
** [sqlite3_memory_used()] if and only if the parameter to
** [sqlite3_memory_highwater()] is true.  ^The value returned
** by [sqlite3_memory_highwater(1)] is the high-water mark
** prior to the reset.
*/
SQLITE_API sqlite3_int64 sqlite3_memory_used(void);
SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag);

/*
** CAPI3REF: Pseudo-Random Number Generator
**
** SQLite contains a high-quality pseudo-random number generator (PRNG) used to
** select random [ROWID | ROWIDs] when inserting new records into a table that
** already uses the largest possible [ROWID].  The PRNG is also used for
** the build-in random() and randomblob() SQL functions.  This interface allows
** applications to access the same PRNG for other purposes.
**
** ^A call to this routine stores N bytes of randomness into buffer P.
**
** ^The first time this routine is invoked (either internally or by
** the application) the PRNG is seeded using randomness obtained
** from the xRandomness method of the default [sqlite3_vfs] object.
** ^On all subsequent invocations, the pseudo-randomness is generated
** internally and without recourse to the [sqlite3_vfs] xRandomness
** method.
*/
SQLITE_API void sqlite3_randomness(int N, void *P);

/*
** CAPI3REF: Compile-Time Authorization Callbacks
**
** ^This routine registers a authorizer callback with a particular
** [database connection], supplied in the first argument.
** ^The authorizer callback is invoked as SQL statements are being compiled
** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()],
** [sqlite3_prepare16()] and [sqlite3_prepare16_v2()].  ^At various
** points during the compilation process, as logic is being created
** to perform various actions, the authorizer callback is invoked to
** see if those actions are allowed.  ^The authorizer callback should
** return [SQLITE_OK] to allow the action, [SQLITE_IGNORE] to disallow the
** specific action but allow the SQL statement to continue to be
** compiled, or [SQLITE_DENY] to cause the entire SQL statement to be
** rejected with an error.  ^If the authorizer callback returns
** any value other than [SQLITE_IGNORE], [SQLITE_OK], or [SQLITE_DENY]
** then the [sqlite3_prepare_v2()] or equivalent call that triggered
** the authorizer will fail with an error message.
**
** When the callback returns [SQLITE_OK], that means the operation
** requested is ok.  ^When the callback returns [SQLITE_DENY], the
** [sqlite3_prepare_v2()] or equivalent call that triggered the
** authorizer will fail with an error message explaining that
** access is denied. 
**
** ^The first parameter to the authorizer callback is a copy of the third
** parameter to the sqlite3_set_authorizer() interface. ^The second parameter
** to the callback is an integer [SQLITE_COPY | action code] that specifies
** the particular action to be authorized. ^The third through sixth parameters
** to the callback are zero-terminated strings that contain additional
** details about the action to be authorized.
**
** ^If the action code is [SQLITE_READ]
** and the callback returns [SQLITE_IGNORE] then the
** [prepared statement] statement is constructed to substitute
** a NULL value in place of the table column that would have
** been read if [SQLITE_OK] had been returned.  The [SQLITE_IGNORE]
** return can be used to deny an untrusted user access to individual
** columns of a table.
** ^If the action code is [SQLITE_DELETE] and the callback returns
** [SQLITE_IGNORE] then the [DELETE] operation proceeds but the
** [truncate optimization] is disabled and all rows are deleted individually.
**
** An authorizer is used when [sqlite3_prepare | preparing]
** SQL statements from an untrusted source, to ensure that the SQL statements
** do not try to access data they are not allowed to see, or that they do not
** try to execute malicious statements that damage the database.  For
** example, an application may allow a user to enter arbitrary
** SQL queries for evaluation by a database.  But the application does
** not want the user to be able to make arbitrary changes to the
** database.  An authorizer could then be put in place while the
** user-entered SQL is being [sqlite3_prepare | prepared] that
** disallows everything except [SELECT] statements.
**
** Applications that need to process SQL from untrusted sources
** might also consider lowering resource limits using [sqlite3_limit()]
** and limiting database size using the [max_page_count] [PRAGMA]
** in addition to using an authorizer.
**
** ^(Only a single authorizer can be in place on a database connection
** at a time.  Each call to sqlite3_set_authorizer overrides the
** previous call.)^  ^Disable the authorizer by installing a NULL callback.
** The authorizer is disabled by default.
**
** The authorizer callback must not do anything that will modify
** the database connection that invoked the authorizer callback.
** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
** database connections for the meaning of "modify" in this paragraph.
**
** ^When [sqlite3_prepare_v2()] is used to prepare a statement, the
** statement might be re-prepared during [sqlite3_step()] due to a 
** schema change.  Hence, the application should ensure that the
** correct authorizer callback remains in place during the [sqlite3_step()].
**
** ^Note that the authorizer callback is invoked only during
** [sqlite3_prepare()] or its variants.  Authorization is not
** performed during statement evaluation in [sqlite3_step()], unless
** as stated in the previous paragraph, sqlite3_step() invokes
** sqlite3_prepare_v2() to reprepare a statement after a schema change.
*/
SQLITE_API int sqlite3_set_authorizer(
  sqlite3*,
  int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
  void *pUserData
);

/*
** CAPI3REF: Authorizer Return Codes
**
** The [sqlite3_set_authorizer | authorizer callback function] must
** return either [SQLITE_OK] or one of these two constants in order
** to signal SQLite whether or not the action is permitted.  See the
** [sqlite3_set_authorizer | authorizer documentation] for additional
** information.
*/
#define SQLITE_DENY   1   /* Abort the SQL statement with an error */
#define SQLITE_IGNORE 2   /* Don't allow access, but don't generate an error */

/*
** CAPI3REF: Authorizer Action Codes
**
** The [sqlite3_set_authorizer()] interface registers a callback function
** that is invoked to authorize certain SQL statement actions.  The
** second parameter to the callback is an integer code that specifies
** what action is being authorized.  These are the integer action codes that
** the authorizer callback may be passed.
**
** These action code values signify what kind of operation is to be
** authorized.  The 3rd and 4th parameters to the authorization
** callback function will be parameters or NULL depending on which of these
** codes is used as the second parameter.  ^(The 5th parameter to the
** authorizer callback is the name of the database ("main", "temp",
** etc.) if applicable.)^  ^The 6th parameter to the authorizer callback
** is the name of the inner-most trigger or view that is responsible for
** the access attempt or NULL if this access attempt is directly from
** top-level SQL code.
*/
/******************************************* 3rd ************ 4th ***********/
#define SQLITE_CREATE_INDEX          1   /* Index Name      Table Name      */
#define SQLITE_CREATE_TABLE          2   /* Table Name      NULL            */
#define SQLITE_CREATE_TEMP_INDEX     3   /* Index Name      Table Name      */
#define SQLITE_CREATE_TEMP_TABLE     4   /* Table Name      NULL            */
#define SQLITE_CREATE_TEMP_TRIGGER   5   /* Trigger Name    Table Name      */
#define SQLITE_CREATE_TEMP_VIEW      6   /* View Name       NULL            */
#define SQLITE_CREATE_TRIGGER        7   /* Trigger Name    Table Name      */
#define SQLITE_CREATE_VIEW           8   /* View Name       NULL            */
#define SQLITE_DELETE                9   /* Table Name      NULL            */
#define SQLITE_DROP_INDEX           10   /* Index Name      Table Name      */
#define SQLITE_DROP_TABLE           11   /* Table Name      NULL            */
#define SQLITE_DROP_TEMP_INDEX      12   /* Index Name      Table Name      */
#define SQLITE_DROP_TEMP_TABLE      13   /* Table Name      NULL            */
#define SQLITE_DROP_TEMP_TRIGGER    14   /* Trigger Name    Table Name      */
#define SQLITE_DROP_TEMP_VIEW       15   /* View Name       NULL            */
#define SQLITE_DROP_TRIGGER         16   /* Trigger Name    Table Name      */
#define SQLITE_DROP_VIEW            17   /* View Name       NULL            */
#define SQLITE_INSERT               18   /* Table Name      NULL            */
#define SQLITE_PRAGMA               19   /* Pragma Name     1st arg or NULL */
#define SQLITE_READ                 20   /* Table Name      Column Name     */
#define SQLITE_SELECT               21   /* NULL            NULL            */
#define SQLITE_TRANSACTION          22   /* Operation       NULL            */
#define SQLITE_UPDATE               23   /* Table Name      Column Name     */
#define SQLITE_ATTACH               24   /* Filename        NULL            */
#define SQLITE_DETACH               25   /* Database Name   NULL            */
#define SQLITE_ALTER_TABLE          26   /* Database Name   Table Name      */
#define SQLITE_REINDEX              27   /* Index Name      NULL            */
#define SQLITE_ANALYZE              28   /* Table Name      NULL            */
#define SQLITE_CREATE_VTABLE        29   /* Table Name      Module Name     */
#define SQLITE_DROP_VTABLE          30   /* Table Name      Module Name     */
#define SQLITE_FUNCTION             31   /* NULL            Function Name   */
#define SQLITE_SAVEPOINT            32   /* Operation       Savepoint Name  */
#define SQLITE_COPY                  0   /* No longer used */

/*
** CAPI3REF: Tracing And Profiling Functions
**
** These routines register callback functions that can be used for
** tracing and profiling the execution of SQL statements.
**
** ^The callback function registered by sqlite3_trace() is invoked at
** various times when an SQL statement is being run by [sqlite3_step()].
** ^The sqlite3_trace() callback is invoked with a UTF-8 rendering of the
** SQL statement text as the statement first begins executing.
** ^(Additional sqlite3_trace() callbacks might occur
** as each triggered subprogram is entered.  The callbacks for triggers
** contain a UTF-8 SQL comment that identifies the trigger.)^
**
** ^The callback function registered by sqlite3_profile() is invoked
** as each SQL statement finishes.  ^The profile callback contains
** the original statement text and an estimate of wall-clock time
** of how long that statement took to run.
*/
SQLITE_API void *sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*);
SQLITE_API SQLITE_EXPERIMENTAL void *sqlite3_profile(sqlite3*,
   void(*xProfile)(void*,const char*,sqlite3_uint64), void*);

/*
** CAPI3REF: Query Progress Callbacks
**
** ^This routine configures a callback function - the
** progress callback - that is invoked periodically during long
** running calls to [sqlite3_exec()], [sqlite3_step()] and
** [sqlite3_get_table()].  An example use for this
** interface is to keep a GUI updated during a large query.
**
** ^If the progress callback returns non-zero, the operation is
** interrupted.  This feature can be used to implement a
** "Cancel" button on a GUI progress dialog box.
**
** The progress handler must not do anything that will modify
** the database connection that invoked the progress handler.
** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
** database connections for the meaning of "modify" in this paragraph.
**
*/
SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);

/*
** CAPI3REF: Opening A New Database Connection
**
** ^These routines open an SQLite database file whose name is given by the
** filename argument. ^The filename argument is interpreted as UTF-8 for
** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte
** order for sqlite3_open16(). ^(A [database connection] handle is usually
** returned in *ppDb, even if an error occurs.  The only exception is that
** if SQLite is unable to allocate memory to hold the [sqlite3] object,
** a NULL will be written into *ppDb instead of a pointer to the [sqlite3]
** object.)^ ^(If the database is opened (and/or created) successfully, then
** [SQLITE_OK] is returned.  Otherwise an [error code] is returned.)^ ^The
** [sqlite3_errmsg()] or [sqlite3_errmsg16()] routines can be used to obtain
** an English language description of the error following a failure of any
** of the sqlite3_open() routines.
**
** ^The default encoding for the database will be UTF-8 if
** sqlite3_open() or sqlite3_open_v2() is called and
** UTF-16 in the native byte order if sqlite3_open16() is used.
**
** Whether or not an error occurs when it is opened, resources
** associated with the [database connection] handle should be released by
** passing it to [sqlite3_close()] when it is no longer required.
**
** The sqlite3_open_v2() interface works like sqlite3_open()
** except that it accepts two additional parameters for additional control
** over the new database connection.  ^(The flags parameter to
** sqlite3_open_v2() can take one of
** the following three values, optionally combined with the 
** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
** and/or [SQLITE_OPEN_PRIVATECACHE] flags:)^
**
** <dl>
** ^(<dt>[SQLITE_OPEN_READONLY]</dt>
** <dd>The database is opened in read-only mode.  If the database does not
** already exist, an error is returned.</dd>)^
**
** ^(<dt>[SQLITE_OPEN_READWRITE]</dt>
** <dd>The database is opened for reading and writing if possible, or reading
** only if the file is write protected by the operating system.  In either
** case the database must already exist, otherwise an error is returned.</dd>)^
**
** ^(<dt>[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]</dt>
** <dd>The database is opened for reading and writing, and is creates it if
** it does not already exist. This is the behavior that is always used for
** sqlite3_open() and sqlite3_open16().</dd>)^
** </dl>
**
** If the 3rd parameter to sqlite3_open_v2() is not one of the
** combinations shown above or one of the combinations shown above combined
** with the [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX],
** [SQLITE_OPEN_SHAREDCACHE] and/or [SQLITE_OPEN_SHAREDCACHE] flags,
** then the behavior is undefined.
**
** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
** opens in the multi-thread [threading mode] as long as the single-thread
** mode has not been set at compile-time or start-time.  ^If the
** [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens
** in the serialized [threading mode] unless single-thread was
** previously selected at compile-time or start-time.
** ^The [SQLITE_OPEN_SHAREDCACHE] flag causes the database connection to be
** eligible to use [shared cache mode], regardless of whether or not shared
** cache is enabled using [sqlite3_enable_shared_cache()].  ^The
** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
** participate in [shared cache mode] even if it is enabled.
**
** ^If the filename is ":memory:", then a private, temporary in-memory database
** is created for the connection.  ^This in-memory database will vanish when
** the database connection is closed.  Future versions of SQLite might
** make use of additional special filenames that begin with the ":" character.
** It is recommended that when a database filename actually does begin with
** a ":" character you should prefix the filename with a pathname such as
** "./" to avoid ambiguity.
**
** ^If the filename is an empty string, then a private, temporary
** on-disk database will be created.  ^This private database will be
** automatically deleted as soon as the database connection is closed.
**
** ^The fourth parameter to sqlite3_open_v2() is the name of the
** [sqlite3_vfs] object that defines the operating system interface that
** the new database connection should use.  ^If the fourth parameter is
** a NULL pointer then the default [sqlite3_vfs] object is used.
**
** <b>Note to Windows users:</b>  The encoding used for the filename argument
** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever
** codepage is currently defined.  Filenames containing international
** characters must be converted to UTF-8 prior to passing them into
** sqlite3_open() or sqlite3_open_v2().
*/
SQLITE_API int sqlite3_open(
  const char *filename,   /* Database filename (UTF-8) */
  sqlite3 **ppDb          /* OUT: SQLite db handle */
);
SQLITE_API int sqlite3_open16(
  const void *filename,   /* Database filename (UTF-16) */
  sqlite3 **ppDb          /* OUT: SQLite db handle */
);
SQLITE_API int sqlite3_open_v2(
  const char *filename,   /* Database filename (UTF-8) */
  sqlite3 **ppDb,         /* OUT: SQLite db handle */
  int flags,              /* Flags */
  const char *zVfs        /* Name of VFS module to use */
);

/*
** CAPI3REF: Error Codes And Messages
**
** ^The sqlite3_errcode() interface returns the numeric [result code] or
** [extended result code] for the most recent failed sqlite3_* API call
** associated with a [database connection]. If a prior API call failed
** but the most recent API call succeeded, the return value from
** sqlite3_errcode() is undefined.  ^The sqlite3_extended_errcode()
** interface is the same except that it always returns the 
** [extended result code] even when extended result codes are
** disabled.
**
** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language
** text that describes the error, as either UTF-8 or UTF-16 respectively.
** ^(Memory to hold the error message string is managed internally.
** The application does not need to worry about freeing the result.
** However, the error string might be overwritten or deallocated by
** subsequent calls to other SQLite interface functions.)^
**
** When the serialized [threading mode] is in use, it might be the
** case that a second error occurs on a separate thread in between
** the time of the first error and the call to these interfaces.
** When that happens, the second error will be reported since these
** interfaces always report the most recent result.  To avoid
** this, each thread can obtain exclusive use of the [database connection] D
** by invoking [sqlite3_mutex_enter]([sqlite3_db_mutex](D)) before beginning
** to use D and invoking [sqlite3_mutex_leave]([sqlite3_db_mutex](D)) after
** all calls to the interfaces listed here are completed.
**
** If an interface fails with SQLITE_MISUSE, that means the interface
** was invoked incorrectly by the application.  In that case, the
** error code and message may or may not be set.
*/
SQLITE_API int sqlite3_errcode(sqlite3 *db);
SQLITE_API int sqlite3_extended_errcode(sqlite3 *db);
SQLITE_API const char *sqlite3_errmsg(sqlite3*);
SQLITE_API const void *sqlite3_errmsg16(sqlite3*);

/*
** CAPI3REF: SQL Statement Object
** KEYWORDS: {prepared statement} {prepared statements}
**
** An instance of this object represents a single SQL statement.
** This object is variously known as a "prepared statement" or a
** "compiled SQL statement" or simply as a "statement".
**
** The life of a statement object goes something like this:
**
** <ol>
** <li> Create the object using [sqlite3_prepare_v2()] or a related
**      function.
** <li> Bind values to [host parameters] using the sqlite3_bind_*()
**      interfaces.
** <li> Run the SQL by calling [sqlite3_step()] one or more times.
** <li> Reset the statement using [sqlite3_reset()] then go back
**      to step 2.  Do this zero or more times.
** <li> Destroy the object using [sqlite3_finalize()].
** </ol>
**
** Refer to documentation on individual methods above for additional
** information.
*/
typedef struct sqlite3_stmt sqlite3_stmt;

/*
** CAPI3REF: Run-time Limits
**
** ^(This interface allows the size of various constructs to be limited
** on a connection by connection basis.  The first parameter is the
** [database connection] whose limit is to be set or queried.  The
** second parameter is one of the [limit categories] that define a
** class of constructs to be size limited.  The third parameter is the
** new limit for that construct.  The function returns the old limit.)^
**
** ^If the new limit is a negative number, the limit is unchanged.
** ^(For the limit category of SQLITE_LIMIT_XYZ there is a 
** [limits | hard upper bound]
** set by a compile-time C preprocessor macro named 
** [limits | SQLITE_MAX_XYZ].
** (The "_LIMIT_" in the name is changed to "_MAX_".))^
** ^Attempts to increase a limit above its hard upper bound are
** silently truncated to the hard upper bound.
**
** Run-time limits are intended for use in applications that manage
** both their own internal database and also databases that are controlled
** by untrusted external sources.  An example application might be a
** web browser that has its own databases for storing history and
** separate databases controlled by JavaScript applications downloaded
** off the Internet.  The internal databases can be given the
** large, default limits.  Databases managed by external sources can
** be given much smaller limits designed to prevent a denial of service
** attack.  Developers might also want to use the [sqlite3_set_authorizer()]
** interface to further control untrusted SQL.  The size of the database
** created by an untrusted script can be contained using the
** [max_page_count] [PRAGMA].
**
** New run-time limit categories may be added in future releases.
*/
SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);

/*
** CAPI3REF: Run-Time Limit Categories
** KEYWORDS: {limit category} {*limit categories}
**
** These constants define various performance limits
** that can be lowered at run-time using [sqlite3_limit()].
** The synopsis of the meanings of the various limits is shown below.
** Additional information is available at [limits | Limits in SQLite].
**
** <dl>
** ^(<dt>SQLITE_LIMIT_LENGTH</dt>
** <dd>The maximum size of any string or BLOB or table row.<dd>)^
**
** ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
** <dd>The maximum length of an SQL statement, in bytes.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_COLUMN</dt>
** <dd>The maximum number of columns in a table definition or in the
** result set of a [SELECT] or the maximum number of columns in an index
** or in an ORDER BY or GROUP BY clause.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
** <dd>The maximum depth of the parse tree on any expression.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
** <dd>The maximum number of terms in a compound SELECT statement.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
** <dd>The maximum number of instructions in a virtual machine program
** used to implement an SQL statement.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
** <dd>The maximum number of arguments on a function.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
** <dd>The maximum number of [ATTACH | attached databases].)^</dd>
**
** ^(<dt>SQLITE_LIMIT_LIKE_PATTERN_LENGTH</dt>
** <dd>The maximum length of the pattern argument to the [LIKE] or
** [GLOB] operators.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_VARIABLE_NUMBER</dt>
** <dd>The maximum number of variables in an SQL statement that can
** be bound.</dd>)^
**
** ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
** <dd>The maximum depth of recursion for triggers.</dd>)^
** </dl>
*/
#define SQLITE_LIMIT_LENGTH                    0
#define SQLITE_LIMIT_SQL_LENGTH                1
#define SQLITE_LIMIT_COLUMN                    2
#define SQLITE_LIMIT_EXPR_DEPTH                3
#define SQLITE_LIMIT_COMPOUND_SELECT           4
#define SQLITE_LIMIT_VDBE_OP                   5
#define SQLITE_LIMIT_FUNCTION_ARG              6
#define SQLITE_LIMIT_ATTACHED                  7
#define SQLITE_LIMIT_LIKE_PATTERN_LENGTH       8
#define SQLITE_LIMIT_VARIABLE_NUMBER           9
#define SQLITE_LIMIT_TRIGGER_DEPTH            10

/*
** CAPI3REF: Compiling An SQL Statement
** KEYWORDS: {SQL statement compiler}
**
** To execute an SQL query, it must first be compiled into a byte-code
** program using one of these routines.
**
** The first argument, "db", is a [database connection] obtained from a
** prior successful call to [sqlite3_open()], [sqlite3_open_v2()] or
** [sqlite3_open16()].  The database connection must not have been closed.
**
** The second argument, "zSql", is the statement to be compiled, encoded
** as either UTF-8 or UTF-16.  The sqlite3_prepare() and sqlite3_prepare_v2()
** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2()
** use UTF-16.
**
** ^If the nByte argument is less than zero, then zSql is read up to the
** first zero terminator. ^If nByte is non-negative, then it is the maximum
** number of  bytes read from zSql.  ^When nByte is non-negative, the
** zSql string ends at either the first '\000' or '\u0000' character or
** the nByte-th byte, whichever comes first. If the caller knows
** that the supplied string is nul-terminated, then there is a small
** performance advantage to be gained by passing an nByte parameter that
** is equal to the number of bytes in the input string <i>including</i>
** the nul-terminator bytes.
**
** ^If pzTail is not NULL then *pzTail is made to point to the first byte
** past the end of the first SQL statement in zSql.  These routines only
** compile the first statement in zSql, so *pzTail is left pointing to
** what remains uncompiled.
**
** ^*ppStmt is left pointing to a compiled [prepared statement] that can be
** executed using [sqlite3_step()].  ^If there is an error, *ppStmt is set
** to NULL.  ^If the input text contains no SQL (if the input is an empty
** string or a comment) then *ppStmt is set to NULL.
** The calling procedure is responsible for deleting the compiled
** SQL statement using [sqlite3_finalize()] after it has finished with it.
** ppStmt may not be NULL.
**
** ^On success, the sqlite3_prepare() family of routines return [SQLITE_OK];
** otherwise an [error code] is returned.
**
** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are
** recommended for all new programs. The two older interfaces are retained
** for backwards compatibility, but their use is discouraged.
** ^In the "v2" interfaces, the prepared statement
** that is returned (the [sqlite3_stmt] object) contains a copy of the
** original SQL text. This causes the [sqlite3_step()] interface to
** behave differently in three ways:
**
** <ol>
** <li>
** ^If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
** always used to do, [sqlite3_step()] will automatically recompile the SQL
** statement and try to run it again.  ^If the schema has changed in
** a way that makes the statement no longer valid, [sqlite3_step()] will still
** return [SQLITE_SCHEMA].  But unlike the legacy behavior, [SQLITE_SCHEMA] is
** now a fatal error.  Calling [sqlite3_prepare_v2()] again will not make the
** error go away.  Note: use [sqlite3_errmsg()] to find the text
** of the parsing error that results in an [SQLITE_SCHEMA] return.
** </li>
**
** <li>
** ^When an error occurs, [sqlite3_step()] will return one of the detailed
** [error codes] or [extended error codes].  ^The legacy behavior was that
** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code
** and the application would have to make a second call to [sqlite3_reset()]
** in order to find the underlying cause of the problem. With the "v2" prepare
** interfaces, the underlying reason for the error is returned immediately.
** </li>
**
** <li>
** ^If the value of a [parameter | host parameter] in the WHERE clause might
** change the query plan for a statement, then the statement may be
** automatically recompiled (as if there had been a schema change) on the first 
** [sqlite3_step()] call following any change to the 
** [sqlite3_bind_text | bindings] of the [parameter]. 
** </li>
** </ol>
*/
SQLITE_API int sqlite3_prepare(
  sqlite3 *db,            /* Database handle */
  const char *zSql,       /* SQL statement, UTF-8 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */
  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const char **pzTail     /* OUT: Pointer to unused portion of zSql */
);
SQLITE_API int sqlite3_prepare_v2(
  sqlite3 *db,            /* Database handle */
  const char *zSql,       /* SQL statement, UTF-8 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */
  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const char **pzTail     /* OUT: Pointer to unused portion of zSql */
);
SQLITE_API int sqlite3_prepare16(
  sqlite3 *db,            /* Database handle */
  const void *zSql,       /* SQL statement, UTF-16 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */
  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const void **pzTail     /* OUT: Pointer to unused portion of zSql */
);
SQLITE_API int sqlite3_prepare16_v2(
  sqlite3 *db,            /* Database handle */
  const void *zSql,       /* SQL statement, UTF-16 encoded */
  int nByte,              /* Maximum length of zSql in bytes. */
  sqlite3_stmt **ppStmt,  /* OUT: Statement handle */
  const void **pzTail     /* OUT: Pointer to unused portion of zSql */
);

/*
** CAPI3REF: Retrieving Statement SQL
**
** ^This interface can be used to retrieve a saved copy of the original
** SQL text used to create a [prepared statement] if that statement was
** compiled using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()].
*/
SQLITE_API const char *sqlite3_sql(sqlite3_stmt *pStmt);

/*
** CAPI3REF: Dynamically Typed Value Object
** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value}
**
** SQLite uses the sqlite3_value object to represent all values
** that can be stored in a database table. SQLite uses dynamic typing
** for the values it stores.  ^Values stored in sqlite3_value objects
** can be integers, floating point values, strings, BLOBs, or NULL.
**
** An sqlite3_value object may be either "protected" or "unprotected".
** Some interfaces require a protected sqlite3_value.  Other interfaces
** will accept either a protected or an unprotected sqlite3_value.
** Every interface that accepts sqlite3_value arguments specifies
** whether or not it requires a protected sqlite3_value.
**
** The terms "protected" and "unprotected" refer to whether or not
** a mutex is held.  A internal mutex is held for a protected
** sqlite3_value object but no mutex is held for an unprotected
** sqlite3_value object.  If SQLite is compiled to be single-threaded
** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0)
** or if SQLite is run in one of reduced mutex modes 
** [SQLITE_CONFIG_SINGLETHREAD] or [SQLITE_CONFIG_MULTITHREAD]
** then there is no distinction between protected and unprotected
** sqlite3_value objects and they can be used interchangeably.  However,
** for maximum code portability it is recommended that applications
** still make the distinction between between protected and unprotected
** sqlite3_value objects even when not strictly required.
**
** ^The sqlite3_value objects that are passed as parameters into the
** implementation of [application-defined SQL functions] are protected.
** ^The sqlite3_value object returned by
** [sqlite3_column_value()] is unprotected.
** Unprotected sqlite3_value objects may only be used with
** [sqlite3_result_value()] and [sqlite3_bind_value()].
** The [sqlite3_value_blob | sqlite3_value_type()] family of
** interfaces require protected sqlite3_value objects.
*/
typedef struct Mem sqlite3_value;

/*
** CAPI3REF: SQL Function Context Object
**
** The context in which an SQL function executes is stored in an
** sqlite3_context object.  ^A pointer to an sqlite3_context object
** is always first parameter to [application-defined SQL functions].
** The application-defined SQL function implementation will pass this
** pointer through into calls to [sqlite3_result_int | sqlite3_result()],
** [sqlite3_aggregate_context()], [sqlite3_user_data()],
** [sqlite3_context_db_handle()], [sqlite3_get_auxdata()],
** and/or [sqlite3_set_auxdata()].
*/
typedef struct sqlite3_context sqlite3_context;

/*
** CAPI3REF: Binding Values To Prepared Statements
** KEYWORDS: {host parameter} {host parameters} {host parameter name}
** KEYWORDS: {SQL parameter} {SQL parameters} {parameter binding}
**
** ^(In the SQL statement text input to [sqlite3_prepare_v2()] and its variants,
** literals may be replaced by a [parameter] that matches one of following
** templates:
**
** <ul>
** <li>  ?
** <li>  ?NNN
** <li>  :VVV
** <li>  @VVV
** <li>  $VVV
** </ul>
**
** In the templates above, NNN represents an integer literal,
** and VVV represents an alphanumeric identifer.)^  ^The values of these
** parameters (also called "host parameter names" or "SQL parameters")
** can be set using the sqlite3_bind_*() routines defined here.
**
** ^The first argument to the sqlite3_bind_*() routines is always
** a pointer to the [sqlite3_stmt] object returned from
** [sqlite3_prepare_v2()] or its variants.
**
** ^The second argument is the index of the SQL parameter to be set.
** ^The leftmost SQL parameter has an index of 1.  ^When the same named
** SQL parameter is used more than once, second and subsequent
** occurrences have the same index as the first occurrence.
** ^The index for named parameters can be looked up using the
** [sqlite3_bind_parameter_index()] API if desired.  ^The index
** for "?NNN" parameters is the value of NNN.
** ^The NNN value must be between 1 and the [sqlite3_limit()]
** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999).
**
** ^The third argument is the value to bind to the parameter.
**
** ^(In those routines that have a fourth argument, its value is the
** number of bytes in the parameter.  To be clear: the value is the
** number of <u>bytes</u> in the value, not the number of characters.)^
** ^If the fourth parameter is negative, the length of the string is
** the number of bytes up to the first zero terminator.
**
** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and
** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or
** string after SQLite has finished with it. ^If the fifth argument is
** the special value [SQLITE_STATIC], then SQLite assumes that the
** information is in static, unmanaged space and does not need to be freed.
** ^If the fifth argument has the value [SQLITE_TRANSIENT], then
** SQLite makes its own private copy of the data immediately, before
** the sqlite3_bind_*() routine returns.
**
** ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that
** is filled with zeroes.  ^A zeroblob uses a fixed amount of memory
** (just an integer to hold its size) while it is being processed.
** Zeroblobs are intended to serve as placeholders for BLOBs whose
** content is later written using
** [sqlite3_blob_open | incremental BLOB I/O] routines.
** ^A negative value for the zeroblob results in a zero-length BLOB.
**
** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer
** for the [prepared statement] or with a prepared statement for which
** [sqlite3_step()] has been called more recently than [sqlite3_reset()],
** then the call will return [SQLITE_MISUSE].  If any sqlite3_bind_()
** routine is passed a [prepared statement] that has been finalized, the
** result is undefined and probably harmful.
**
** ^Bindings are not cleared by the [sqlite3_reset()] routine.
** ^Unbound parameters are interpreted as NULL.
**
** ^The sqlite3_bind_* routines return [SQLITE_OK] on success or an
** [error code] if anything goes wrong.
** ^[SQLITE_RANGE] is returned if the parameter
** index is out of range.  ^[SQLITE_NOMEM] is returned if malloc() fails.
**
** See also: [sqlite3_bind_parameter_count()],
** [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()].
*/
SQLITE_API int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*));
SQLITE_API int sqlite3_bind_double(sqlite3_stmt*, int, double);
SQLITE_API int sqlite3_bind_int(sqlite3_stmt*, int, int);
SQLITE_API int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
SQLITE_API int sqlite3_bind_null(sqlite3_stmt*, int);
SQLITE_API int sqlite3_bind_text(sqlite3_stmt*, int, const char*, int n, void(*)(void*));
SQLITE_API int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
SQLITE_API int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
SQLITE_API int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);

/*
** CAPI3REF: Number Of SQL Parameters
**
** ^This routine can be used to find the number of [SQL parameters]
** in a [prepared statement].  SQL parameters are tokens of the
** form "?", "?NNN", ":AAA", "$AAA", or "@AAA" that serve as
** placeholders for values that are [sqlite3_bind_blob | bound]
** to the parameters at a later time.
**
** ^(This routine actually returns the index of the largest (rightmost)
** parameter. For all forms except ?NNN, this will correspond to the
** number of unique parameters.  If parameters of the ?NNN form are used,
** there may be gaps in the list.)^
**
** See also: [sqlite3_bind_blob|sqlite3_bind()],
** [sqlite3_bind_parameter_name()], and
** [sqlite3_bind_parameter_index()].
*/
SQLITE_API int sqlite3_bind_parameter_count(sqlite3_stmt*);

/*
** CAPI3REF: Name Of A Host Parameter
**
** ^The sqlite3_bind_parameter_name(P,N) interface returns
** the name of the N-th [SQL parameter] in the [prepared statement] P.
** ^(SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA"
** have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA"
** respectively.
** In other words, the initial ":" or "$" or "@" or "?"
** is included as part of the name.)^
** ^Parameters of the form "?" without a following integer have no name
** and are referred to as "nameless" or "anonymous parameters".
**
** ^The first host parameter has an index of 1, not 0.
**
** ^If the value N is out of range or if the N-th parameter is
** nameless, then NULL is returned.  ^The returned string is
** always in UTF-8 encoding even if the named parameter was
** originally specified as UTF-16 in [sqlite3_prepare16()] or
** [sqlite3_prepare16_v2()].
**
** See also: [sqlite3_bind_blob|sqlite3_bind()],
** [sqlite3_bind_parameter_count()], and
** [sqlite3_bind_parameter_index()].
*/
SQLITE_API const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int);

/*
** CAPI3REF: Index Of A Parameter With A Given Name
**
** ^Return the index of an SQL parameter given its name.  ^The
** index value returned is suitable for use as the second
** parameter to [sqlite3_bind_blob|sqlite3_bind()].  ^A zero
** is returned if no matching parameter is found.  ^The parameter
** name must be given in UTF-8 even if the original statement
** was prepared from UTF-16 text using [sqlite3_prepare16_v2()].
**
** See also: [sqlite3_bind_blob|sqlite3_bind()],
** [sqlite3_bind_parameter_count()], and
** [sqlite3_bind_parameter_index()].
*/
SQLITE_API int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);

/*
** CAPI3REF: Reset All Bindings On A Prepared Statement
**
** ^Contrary to the intuition of many, [sqlite3_reset()] does not reset
** the [sqlite3_bind_blob | bindings] on a [prepared statement].
** ^Use this routine to reset all host parameters to NULL.
*/
SQLITE_API int sqlite3_clear_bindings(sqlite3_stmt*);

/*
** CAPI3REF: Number Of Columns In A Result Set
**
** ^Return the number of columns in the result set returned by the
** [prepared statement]. ^This routine returns 0 if pStmt is an SQL
** statement that does not return data (for example an [UPDATE]).
*/
SQLITE_API int sqlite3_column_count(sqlite3_stmt *pStmt);

/*
** CAPI3REF: Column Names In A Result Set
**
** ^These routines return the name assigned to a particular column
** in the result set of a [SELECT] statement.  ^The sqlite3_column_name()
** interface returns a pointer to a zero-terminated UTF-8 string
** and sqlite3_column_name16() returns a pointer to a zero-terminated
** UTF-16 string.  ^The first parameter is the [prepared statement]
** that implements the [SELECT] statement. ^The second parameter is the
** column number.  ^The leftmost column is number 0.
**
** ^The returned string pointer is valid until either the [prepared statement]
** is destroyed by [sqlite3_finalize()] or until the next call to
** sqlite3_column_name() or sqlite3_column_name16() on the same column.
**
** ^If sqlite3_malloc() fails during the processing of either routine
** (for example during a conversion from UTF-8 to UTF-16) then a
** NULL pointer is returned.
**
** ^The name of a result column is the value of the "AS" clause for
** that column, if there is an AS clause.  If there is no AS clause
** then the name of the column is unspecified and may change from
** one release of SQLite to the next.
*/
SQLITE_API const char *sqlite3_column_name(sqlite3_stmt*, int N);
SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N);

/*
** CAPI3REF: Source Of Data In A Query Result
**
** ^These routines provide a means to determine the database, table, and
** table column that is the origin of a particular result column in
** [SELECT] statement.
** ^The name of the database or table or column can be returned as
** either a UTF-8 or UTF-16 string.  ^The _database_ routines return
** the database name, the _table_ routines return the table name, and
** the origin_ routines return the column name.
** ^The returned string is valid until the [prepared statement] is destroyed
** using [sqlite3_finalize()] or until the same information is requested
** again in a different encoding.
**
** ^The names returned are the original un-aliased names of the
** database, table, and column.
**
** ^The first argument to these interfaces is a [prepared statement].
** ^These functions return information about the Nth result column returned by
** the statement, where N is the second function argument.
** ^The left-most column is column 0 for these routines.
**
** ^If the Nth column returned by the statement is an expression or
** subquery and is not a column value, then all of these functions return
** NULL.  ^These routine might also return NULL if a memory allocation error
** occurs.  ^Otherwise, they return the name of the attached database, table,
** or column that query result column was extracted from.
**
** ^As with all other SQLite APIs, those whose names end with "16" return
** UTF-16 encoded strings and the other functions return UTF-8.
**
** ^These APIs are only available if the library was compiled with the
** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol.
**
** If two or more threads call one or more of these routines against the same
** prepared statement and column at the same time then the results are
** undefined.
**
** If two or more threads call one or more
** [sqlite3_column_database_name | column metadata interfaces]
** for the same [prepared statement] and result column
** at the same time then the results are undefined.
*/
SQLITE_API const char *sqlite3_column_database_name(sqlite3_stmt*,int);
SQLITE_API const void *sqlite3_column_database_name16(sqlite3_stmt*,int);
SQLITE_API const char *sqlite3_column_table_name(sqlite3_stmt*,int);
SQLITE_API const void *sqlite3_column_table_name16(sqlite3_stmt*,int);
SQLITE_API const char *sqlite3_column_origin_name(sqlite3_stmt*,int);
SQLITE_API const void *sqlite3_column_origin_name16(sqlite3_stmt*,int);

/*
** CAPI3REF: Declared Datatype Of A Query Result
**
** ^(The first parameter is a [prepared statement].
** If this statement is a [SELECT] statement and the Nth column of the
** returned result set of that [SELECT] is a table column (not an
** expression or subquery) then the declared type of the table
** column is returned.)^  ^If the Nth column of the result set is an
** expression or subquery, then a NULL pointer is returned.
** ^The returned string is always UTF-8 encoded.
**
** ^(For example, given the database schema:
**
** CREATE TABLE t1(c1 VARIANT);
**
** and the following statement to be compiled:
**
** SELECT c1 + 1, c1 FROM t1;
**
** this routine would return the string "VARIANT" for the second result
** column (i==1), and a NULL pointer for the first result column (i==0).)^
**
** ^SQLite uses dynamic run-time typing.  ^So just because a column
** is declared to contain a particular type does not mean that the
** data stored in that column is of the declared type.  SQLite is
** strongly typed, but the typing is dynamic not static.  ^Type
** is associated with individual values, not with the containers
** used to hold those values.
*/
SQLITE_API const char *sqlite3_column_decltype(sqlite3_stmt*,int);
SQLITE_API const void *sqlite3_column_decltype16(sqlite3_stmt*,int);

/*
** CAPI3REF: Evaluate An SQL Statement
**
** After a [prepared statement] has been prepared using either
** [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] or one of the legacy
** interfaces [sqlite3_prepare()] or [sqlite3_prepare16()], this function
** must be called one or more times to evaluate the statement.
**
** The details of the behavior of the sqlite3_step() interface depend
** on whether the statement was prepared using the newer "v2" interface
** [sqlite3_prepare_v2()] and [sqlite3_prepare16_v2()] or the older legacy
** interface [sqlite3_prepare()] and [sqlite3_prepare16()].  The use of the
** new "v2" interface is recommended for new applications but the legacy
** interface will continue to be supported.
**
** ^In the legacy interface, the return value will be either [SQLITE_BUSY],
** [SQLITE_DONE], [SQLITE_ROW], [SQLITE_ERROR], or [SQLITE_MISUSE].
** ^With the "v2" interface, any of the other [result codes] or
** [extended result codes] might be returned as well.
**
** ^[SQLITE_BUSY] means that the database engine was unable to acquire the
** database locks it needs to do its job.  ^If the statement is a [COMMIT]
** or occurs outside of an explicit transaction, then you can retry the
** statement.  If the statement is not a [COMMIT] and occurs within a
** explicit transaction then you should rollback the transaction before
** continuing.
**
** ^[SQLITE_DONE] means that the statement has finished executing
** successfully.  sqlite3_step() should not be called again on this virtual
** machine without first calling [sqlite3_reset()] to reset the virtual
** machine back to its initial state.
**
** ^If the SQL statement being executed returns any data, then [SQLITE_ROW]
** is returned each time a new row of data is ready for processing by the
** caller. The values may be accessed using the [column access functions].
** sqlite3_step() is called again to retrieve the next row of data.
**
** ^[SQLITE_ERROR] means that a run-time error (such as a constraint
** violation) has occurred.  sqlite3_step() should not be called again on
** the VM. More information may be found by calling [sqlite3_errmsg()].
** ^With the legacy interface, a more specific error code (for example,
** [SQLITE_INTERRUPT], [SQLITE_SCHEMA], [SQLITE_CORRUPT], and so forth)
** can be obtained by calling [sqlite3_reset()] on the
** [prepared statement].  ^In the "v2" interface,
** the more specific error code is returned directly by sqlite3_step().
**
** [SQLITE_MISUSE] means that the this routine was called inappropriately.
** Perhaps it was called on a [prepared statement] that has
** already been [sqlite3_finalize | finalized] or on one that had
** previously returned [SQLITE_ERROR] or [SQLITE_DONE].  Or it could
** be the case that the same database connection is being used by two or
** more threads at the same moment in time.
**
** <b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
** API always returns a generic error code, [SQLITE_ERROR], following any
** error other than [SQLITE_BUSY] and [SQLITE_MISUSE].  You must call
** [sqlite3_reset()] or [sqlite3_finalize()] in order to find one of the
** specific [error codes] that better describes the error.
** We admit that this is a goofy design.  The problem has been fixed
** with the "v2" interface.  If you prepare all of your SQL statements
** using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] instead
** of the legacy [sqlite3_prepare()] and [sqlite3_prepare16()] interfaces,
** then the more specific [error codes] are returned directly
** by sqlite3_step().  The use of the "v2" interface is recommended.
*/
SQLITE_API int sqlite3_step(sqlite3_stmt*);

/*
** CAPI3REF: Number of columns in a result set
**
** ^The sqlite3_data_count(P) the number of columns in the
** of the result set of [prepared statement] P.
*/
SQLITE_API int sqlite3_data_count(sqlite3_stmt *pStmt);

/*
** CAPI3REF: Fundamental Datatypes
** KEYWORDS: SQLITE_TEXT
**
** ^(Every value in SQLite has one of five fundamental datatypes:
**
** <ul>
** <li> 64-bit signed integer
** <li> 64-bit IEEE floating point number
** <li> string
** <li> BLOB
** <li> NULL
** </ul>)^
**
** These constants are codes for each of those types.
**
** Note that the SQLITE_TEXT constant was also used in SQLite version 2
** for a completely different meaning.  Software that links against both
** SQLite version 2 and SQLite version 3 should use SQLITE3_TEXT, not
** SQLITE_TEXT.
*/
#define SQLITE_INTEGER  1
#define SQLITE_FLOAT    2
#define SQLITE_BLOB     4
#define SQLITE_NULL     5
#ifdef SQLITE_TEXT
# undef SQLITE_TEXT
#else
# define SQLITE_TEXT     3
#endif
#define SQLITE3_TEXT     3

/*
** CAPI3REF: Result Values From A Query
** KEYWORDS: {column access functions}
**
** These routines form the "result set" interface.
**
** ^These routines return information about a single column of the current
** result row of a query.  ^In every case the first argument is a pointer
** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
** that was returned from [sqlite3_prepare_v2()] or one of its variants)
** and the second argument is the index of the column for which information
** should be returned. ^The leftmost column of the result set has the index 0.
** ^The number of columns in the result can be determined using
** [sqlite3_column_count()].
**
** If the SQL statement does not currently point to a valid row, or if the
** column index is out of range, the result is undefined.
** These routines may only be called when the most recent call to
** [sqlite3_step()] has returned [SQLITE_ROW] and neither
** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently.
** If any of these routines are called after [sqlite3_reset()] or
** [sqlite3_finalize()] or after [sqlite3_step()] has returned
** something other than [SQLITE_ROW], the results are undefined.
** If [sqlite3_step()] or [sqlite3_reset()] or [sqlite3_finalize()]
** are called from a different thread while any of these routines
** are pending, then the results are undefined.
**
** ^The sqlite3_column_type() routine returns the
** [SQLITE_INTEGER | datatype code] for the initial data type
** of the result column.  ^The returned value is one of [SQLITE_INTEGER],
** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL].  The value
** returned by sqlite3_column_type() is only meaningful if no type
** conversions have occurred as described below.  After a type conversion,
** the value returned by sqlite3_column_type() is undefined.  Future
** versions of SQLite may change the behavior of sqlite3_column_type()
** following a type conversion.
**
** ^If the result is a BLOB or UTF-8 string then the sqlite3_column_bytes()
** routine returns the number of bytes in that BLOB or string.
** ^If the result is a UTF-16 string, then sqlite3_column_bytes() converts
** the string to UTF-8 and then returns the number of bytes.
** ^If the result is a numeric value then sqlite3_column_bytes() uses
** [sqlite3_snprintf()] to convert that value to a UTF-8 string and returns
** the number of bytes in that string.
** ^The value returned does not include the zero terminator at the end
** of the string.  ^For clarity: the value returned is the number of
** bytes in the string, not the number of characters.
**
** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
** even empty strings, are always zero terminated.  ^The return
** value from sqlite3_column_blob() for a zero-length BLOB is an arbitrary
** pointer, possibly even a NULL pointer.
**
** ^The sqlite3_column_bytes16() routine is similar to sqlite3_column_bytes()
** but leaves the result in UTF-16 in native byte order instead of UTF-8.
** ^The zero terminator is not included in this count.
**
** ^The object returned by [sqlite3_column_value()] is an
** [unprotected sqlite3_value] object.  An unprotected sqlite3_value object
** may only be used with [sqlite3_bind_value()] and [sqlite3_result_value()].
** If the [unprotected sqlite3_value] object returned by
** [sqlite3_column_value()] is used in any other way, including calls
** to routines like [sqlite3_value_int()], [sqlite3_value_text()],
** or [sqlite3_value_bytes()], then the behavior is undefined.
**
** These routines attempt to convert the value where appropriate.  ^For
** example, if the internal representation is FLOAT and a text result
** is requested, [sqlite3_snprintf()] is used internally to perform the
** conversion automatically.  ^(The following table details the conversions
** that are applied:
**
** <blockquote>
** <table border="1">
** <tr><th> Internal<br>Type <th> Requested<br>Type <th>  Conversion
**
** <tr><td>  NULL    <td> INTEGER   <td> Result is 0
** <tr><td>  NULL    <td>  FLOAT    <td> Result is 0.0
** <tr><td>  NULL    <td>   TEXT    <td> Result is NULL pointer
** <tr><td>  NULL    <td>   BLOB    <td> Result is NULL pointer
** <tr><td> INTEGER  <td>  FLOAT    <td> Convert from integer to float
** <tr><td> INTEGER  <td>   TEXT    <td> ASCII rendering of the integer
** <tr><td> INTEGER  <td>   BLOB    <td> Same as INTEGER->TEXT
** <tr><td>  FLOAT   <td> INTEGER   <td> Convert from float to integer
** <tr><td>  FLOAT   <td>   TEXT    <td> ASCII rendering of the float
** <tr><td>  FLOAT   <td>   BLOB    <td> Same as FLOAT->TEXT
** <tr><td>  TEXT    <td> INTEGER   <td> Use atoi()
** <tr><td>  TEXT    <td>  FLOAT    <td> Use atof()
** <tr><td>  TEXT    <td>   BLOB    <td> No change
** <tr><td>  BLOB    <td> INTEGER   <td> Convert to TEXT then use atoi()
** <tr><td>  BLOB    <td>  FLOAT    <td> Convert to TEXT then use atof()
** <tr><td>  BLOB    <td>   TEXT    <td> Add a zero terminator if needed
** </table>
** </blockquote>)^
**
** The table above makes reference to standard C library functions atoi()
** and atof().  SQLite does not really use these functions.  It has its
** own equivalent internal routines.  The atoi() and atof() names are
** used in the table for brevity and because they are familiar to most
** C programmers.
**
** ^Note that when type conversions occur, pointers returned by prior
** calls to sqlite3_column_blob(), sqlite3_column_text(), and/or
** sqlite3_column_text16() may be invalidated.
** ^(Type conversions and pointer invalidations might occur
** in the following cases:
**
** <ul>
** <li> The initial content is a BLOB and sqlite3_column_text() or
**      sqlite3_column_text16() is called.  A zero-terminator might
**      need to be added to the string.</li>
** <li> The initial content is UTF-8 text and sqlite3_column_bytes16() or
**      sqlite3_column_text16() is called.  The content must be converted
**      to UTF-16.</li>
** <li> The initial content is UTF-16 text and sqlite3_column_bytes() or
**      sqlite3_column_text() is called.  The content must be converted
**      to UTF-8.</li>
** </ul>)^
**
** ^Conversions between UTF-16be and UTF-16le are always done in place and do
** not invalidate a prior pointer, though of course the content of the buffer
** that the prior pointer points to will have been modified.  Other kinds
** of conversion are done in place when it is possible, but sometimes they
** are not possible and in those cases prior pointers are invalidated.
**
** ^(The safest and easiest to remember policy is to invoke these routines
** in one of the following ways:
**
** <ul>
**  <li>sqlite3_column_text() followed by sqlite3_column_bytes()</li>
**  <li>sqlite3_column_blob() followed by sqlite3_column_bytes()</li>
**  <li>sqlite3_column_text16() followed by sqlite3_column_bytes16()</li>
** </ul>)^
**
** In other words, you should call sqlite3_column_text(),
** sqlite3_column_blob(), or sqlite3_column_text16() first to force the result
** into the desired format, then invoke sqlite3_column_bytes() or
** sqlite3_column_bytes16() to find the size of the result.  Do not mix calls
** to sqlite3_column_text() or sqlite3_column_blob() with calls to
** sqlite3_column_bytes16(), and do not mix calls to sqlite3_column_text16()
** with calls to sqlite3_column_bytes().
**
** ^The pointers returned are valid until a type conversion occurs as
** described above, or until [sqlite3_step()] or [sqlite3_reset()] or
** [sqlite3_finalize()] is called.  ^The memory space used to hold strings
** and BLOBs is freed automatically.  Do <b>not</b> pass the pointers returned
** [sqlite3_column_blob()], [sqlite3_column_text()], etc. into
** [sqlite3_free()].
**
** ^(If a memory allocation error occurs during the evaluation of any
** of these routines, a default value is returned.  The default value
** is either the integer 0, the floating point number 0.0, or a NULL
** pointer.  Subsequent calls to [sqlite3_errcode()] will return
** [SQLITE_NOMEM].)^
*/
SQLITE_API const void *sqlite3_column_blob(sqlite3_stmt*, int iCol);
SQLITE_API int sqlite3_column_bytes(sqlite3_stmt*, int iCol);
SQLITE_API int sqlite3_column_bytes16(sqlite3_stmt*, int iCol);
SQLITE_API double sqlite3_column_double(sqlite3_stmt*, int iCol);
SQLITE_API int sqlite3_column_int(sqlite3_stmt*, int iCol);
SQLITE_API sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol);
SQLITE_API const unsigned char *sqlite3_column_text(sqlite3_stmt*, int iCol);
SQLITE_API const void *sqlite3_column_text16(sqlite3_stmt*, int iCol);
SQLITE_API int sqlite3_column_type(sqlite3_stmt*, int iCol);
SQLITE_API sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol);

/*
** CAPI3REF: Destroy A Prepared Statement Object
**
** ^The sqlite3_finalize() function is called to delete a [prepared statement].
** ^If the statement was executed successfully or not executed at all, then
** SQLITE_OK is returned. ^If execution of the statement failed then an
** [error code] or [extended error code] is returned.
**
** ^This routine can be called at any point during the execution of the
** [prepared statement].  ^If the virtual machine has not
** completed execution when this routine is called, that is like
** encountering an error or an [sqlite3_interrupt | interrupt].
** ^Incomplete updates may be rolled back and transactions canceled,
** depending on the circumstances, and the
** [error code] returned will be [SQLITE_ABORT].
*/
SQLITE_API int sqlite3_finalize(sqlite3_stmt *pStmt);

/*
** CAPI3REF: Reset A Prepared Statement Object
**
** The sqlite3_reset() function is called to reset a [prepared statement]
** object back to its initial state, ready to be re-executed.
** ^Any SQL statement variables that had values bound to them using
** the [sqlite3_bind_blob | sqlite3_bind_*() API] retain their values.
** Use [sqlite3_clear_bindings()] to reset the bindings.
**
** ^The [sqlite3_reset(S)] interface resets the [prepared statement] S
** back to the beginning of its program.
**
** ^If the most recent call to [sqlite3_step(S)] for the
** [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE],
** or if [sqlite3_step(S)] has never before been called on S,
** then [sqlite3_reset(S)] returns [SQLITE_OK].
**
** ^If the most recent call to [sqlite3_step(S)] for the
** [prepared statement] S indicated an error, then
** [sqlite3_reset(S)] returns an appropriate [error code].
**
** ^The [sqlite3_reset(S)] interface does not change the values
** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S.
*/
SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);

/*
** CAPI3REF: Create Or Redefine SQL Functions
** KEYWORDS: {function creation routines}
** KEYWORDS: {application-defined SQL function}
** KEYWORDS: {application-defined SQL functions}
**
** ^These two functions (collectively known as "function creation routines")
** are used to add SQL functions or aggregates or to redefine the behavior
** of existing SQL functions or aggregates.  The only difference between the
** two is that the second parameter, the name of the (scalar) function or
** aggregate, is encoded in UTF-8 for sqlite3_create_function() and UTF-16
** for sqlite3_create_function16().
**
** ^The first parameter is the [database connection] to which the SQL
** function is to be added.  ^If an application uses more than one database
** connection then application-defined SQL functions must be added
** to each database connection separately.
**
** The second parameter is the name of the SQL function to be created or
** redefined.  ^The length of the name is limited to 255 bytes, exclusive of
** the zero-terminator.  Note that the name length limit is in bytes, not
** characters.  ^Any attempt to create a function with a longer name
** will result in [SQLITE_ERROR] being returned.
**
** ^The third parameter (nArg)
** is the number of arguments that the SQL function or
** aggregate takes. ^If this parameter is -1, then the SQL function or
** aggregate may take any number of arguments between 0 and the limit
** set by [sqlite3_limit]([SQLITE_LIMIT_FUNCTION_ARG]).  If the third
** parameter is less than -1 or greater than 127 then the behavior is
** undefined.
**
** The fourth parameter, eTextRep, specifies what
** [SQLITE_UTF8 | text encoding] this SQL function prefers for
** its parameters.  Any SQL function implementation should be able to work
** work with UTF-8, UTF-16le, or UTF-16be.  But some implementations may be
** more efficient with one encoding than another.  ^An application may
** invoke sqlite3_create_function() or sqlite3_create_function16() multiple
** times with the same function but with different values of eTextRep.
** ^When multiple implementations of the same function are available, SQLite
** will pick the one that involves the least amount of data conversion.
** If there is only a single implementation which does not care what text
** encoding is used, then the fourth argument should be [SQLITE_ANY].
**
** ^(The fifth parameter is an arbitrary pointer.  The implementation of the
** function can gain access to this pointer using [sqlite3_user_data()].)^
**
** The seventh, eighth and ninth parameters, xFunc, xStep and xFinal, are
** pointers to C-language functions that implement the SQL function or
** aggregate. ^A scalar SQL function requires an implementation of the xFunc
** callback only; NULL pointers should be passed as the xStep and xFinal
** parameters. ^An aggregate SQL function requires an implementation of xStep
** and xFinal and NULL should be passed for xFunc. ^To delete an existing
** SQL function or aggregate, pass NULL for all three function callbacks.
**
** ^It is permitted to register multiple implementations of the same
** functions with the same name but with either differing numbers of
** arguments or differing preferred text encodings.  ^SQLite will use
** the implementation that most closely matches the way in which the
** SQL function is used.  ^A function implementation with a non-negative
** nArg parameter is a better match than a function implementation with
** a negative nArg.  ^A function where the preferred text encoding
** matches the database encoding is a better
** match than a function where the encoding is different.  
** ^A function where the encoding difference is between UTF16le and UTF16be
** is a closer match than a function where the encoding difference is
** between UTF8 and UTF16.
**
** ^Built-in functions may be overloaded by new application-defined functions.
** ^The first application-defined function with a given name overrides all
** built-in functions in the same [database connection] with the same name.
** ^Subsequent application-defined functions of the same name only override 
** prior application-defined functions that are an exact match for the
** number of parameters and preferred encoding.
**
** ^An application-defined function is permitted to call other
** SQLite interfaces.  However, such calls must not
** close the database connection nor finalize or reset the prepared
** statement in which the function is running.
*/
SQLITE_API int sqlite3_create_function(
  sqlite3 *db,
  const char *zFunctionName,
  int nArg,
  int eTextRep,
  void *pApp,
  void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
  void (*xStep)(sqlite3_context*,int,sqlite3_value**),
  void (*xFinal)(sqlite3_context*)
);
SQLITE_API int sqlite3_create_function16(
  sqlite3 *db,
  const void *zFunctionName,
  int nArg,
  int eTextRep,
  void *pApp,
  void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
  void (*xStep)(sqlite3_context*,int,sqlite3_value**),
  void (*xFinal)(sqlite3_context*)
);

/*
** CAPI3REF: Text Encodings
**
** These constant define integer codes that represent the various
** text encodings supported by SQLite.
*/
#define SQLITE_UTF8           1
#define SQLITE_UTF16LE        2
#define SQLITE_UTF16BE        3
#define SQLITE_UTF16          4    /* Use native byte order */
#define SQLITE_ANY            5    /* sqlite3_create_function only */
#define SQLITE_UTF16_ALIGNED  8    /* sqlite3_create_collation only */

/*
** CAPI3REF: Deprecated Functions
** DEPRECATED
**
** These functions are [deprecated].  In order to maintain
** backwards compatibility with older code, these functions continue 
** to be supported.  However, new applications should avoid
** the use of these functions.  To help encourage people to avoid
** using these functions, we are not going to tell you what they do.
*/
#ifndef SQLITE_OMIT_DEPRECATED
SQLITE_API SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*);
SQLITE_API SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt*);
SQLITE_API SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
SQLITE_API SQLITE_DEPRECATED int sqlite3_global_recover(void);
SQLITE_API SQLITE_DEPRECATED void sqlite3_thread_cleanup(void);
SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),void*,sqlite3_int64);
#endif

/*
** CAPI3REF: Obtaining SQL Function Parameter Values
**
** The C-language implementation of SQL functions and aggregates uses
** this set of interface routines to access the parameter values on
** the function or aggregate.
**
** The xFunc (for scalar functions) or xStep (for aggregates) parameters
** to [sqlite3_create_function()] and [sqlite3_create_function16()]
** define callbacks that implement the SQL functions and aggregates.
** The 4th parameter to these callbacks is an array of pointers to
** [protected sqlite3_value] objects.  There is one [sqlite3_value] object for
** each parameter to the SQL function.  These routines are used to
** extract values from the [sqlite3_value] objects.
**
** These routines work only with [protected sqlite3_value] objects.
** Any attempt to use these routines on an [unprotected sqlite3_value]
** object results in undefined behavior.
**
** ^These routines work just like the corresponding [column access functions]
** except that  these routines take a single [protected sqlite3_value] object
** pointer instead of a [sqlite3_stmt*] pointer and an integer column number.
**
** ^The sqlite3_value_text16() interface extracts a UTF-16 string
** in the native byte-order of the host machine.  ^The
** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
** extract UTF-16 strings as big-endian and little-endian respectively.
**
** ^(The sqlite3_value_numeric_type() interface attempts to apply
** numeric affinity to the value.  This means that an attempt is
** made to convert the value to an integer or floating point.  If
** such a conversion is possible without loss of information (in other
** words, if the value is a string that looks like a number)
** then the conversion is performed.  Otherwise no conversion occurs.
** The [SQLITE_INTEGER | datatype] after conversion is returned.)^
**
** Please pay particular attention to the fact that the pointer returned
** from [sqlite3_value_blob()], [sqlite3_value_text()], or
** [sqlite3_value_text16()] can be invalidated by a subsequent call to
** [sqlite3_value_bytes()], [sqlite3_value_bytes16()], [sqlite3_value_text()],
** or [sqlite3_value_text16()].
**
** These routines must be called from the same thread as
** the SQL function that supplied the [sqlite3_value*] parameters.
*/
SQLITE_API const void *sqlite3_value_blob(sqlite3_value*);
SQLITE_API int sqlite3_value_bytes(sqlite3_value*);
SQLITE_API int sqlite3_value_bytes16(sqlite3_value*);
SQLITE_API double sqlite3_value_double(sqlite3_value*);
SQLITE_API int sqlite3_value_int(sqlite3_value*);
SQLITE_API sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
SQLITE_API const unsigned char *sqlite3_value_text(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16le(sqlite3_value*);
SQLITE_API const void *sqlite3_value_text16be(sqlite3_value*);
SQLITE_API int sqlite3_value_type(sqlite3_value*);
SQLITE_API int sqlite3_value_numeric_type(sqlite3_value*);

/*
** CAPI3REF: Obtain Aggregate Function Context
**
** Implementions of aggregate SQL functions use this
** routine to allocate memory for storing their state.
**
** ^The first time the sqlite3_aggregate_context(C,N) routine is called 
** for a particular aggregate function, SQLite
** allocates N of memory, zeroes out that memory, and returns a pointer
** to the new memory. ^On second and subsequent calls to
** sqlite3_aggregate_context() for the same aggregate function instance,
** the same buffer is returned.  Sqlite3_aggregate_context() is normally
** called once for each invocation of the xStep callback and then one
** last time when the xFinal callback is invoked.  ^(When no rows match
** an aggregate query, the xStep() callback of the aggregate function
** implementation is never called and xFinal() is called exactly once.
** In those cases, sqlite3_aggregate_context() might be called for the
** first time from within xFinal().)^
**
** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer if N is
** less than or equal to zero or if a memory allocate error occurs.
**
** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is
** determined by the N parameter on first successful call.  Changing the
** value of N in subsequent call to sqlite3_aggregate_context() within
** the same aggregate function instance will not resize the memory
** allocation.)^
**
** ^SQLite automatically frees the memory allocated by 
** sqlite3_aggregate_context() when the aggregate query concludes.
**
** The first parameter must be a copy of the
** [sqlite3_context | SQL function context] that is the first parameter
** to the xStep or xFinal callback routine that implements the aggregate
** function.
**
** This routine must be called from the same thread in which
** the aggregate SQL function is running.
*/
SQLITE_API void *sqlite3_aggregate_context(sqlite3_context*, int nBytes);

/*
** CAPI3REF: User Data For Functions
**
** ^The sqlite3_user_data() interface returns a copy of
** the pointer that was the pUserData parameter (the 5th parameter)
** of the [sqlite3_create_function()]
** and [sqlite3_create_function16()] routines that originally
** registered the application defined function.
**
** This routine must be called from the same thread in which
** the application-defined function is running.
*/
SQLITE_API void *sqlite3_user_data(sqlite3_context*);

/*
** CAPI3REF: Database Connection For Functions
**
** ^The sqlite3_context_db_handle() interface returns a copy of
** the pointer to the [database connection] (the 1st parameter)
** of the [sqlite3_create_function()]
** and [sqlite3_create_function16()] routines that originally
** registered the application defined function.
*/
SQLITE_API sqlite3 *sqlite3_context_db_handle(sqlite3_context*);

/*
** CAPI3REF: Function Auxiliary Data
**
** The following two functions may be used by scalar SQL functions to
** associate metadata with argument values. If the same value is passed to
** multiple invocations of the same SQL function during query execution, under
** some circumstances the associated metadata may be preserved. This may
** be used, for example, to add a regular-expression matching scalar
** function. The compiled version of the regular expression is stored as
** metadata associated with the SQL value passed as the regular expression
** pattern.  The compiled regular expression can be reused on multiple
** invocations of the same function so that the original pattern string
** does not need to be recompiled on each invocation.
**
** ^The sqlite3_get_auxdata() interface returns a pointer to the metadata
** associated by the sqlite3_set_auxdata() function with the Nth argument
** value to the application-defined function. ^If no metadata has been ever
** been set for the Nth argument of the function, or if the corresponding
** function parameter has changed since the meta-data was set,
** then sqlite3_get_auxdata() returns a NULL pointer.
**
** ^The sqlite3_set_auxdata() interface saves the metadata
** pointed to by its 3rd parameter as the metadata for the N-th
** argument of the application-defined function.  Subsequent
** calls to sqlite3_get_auxdata() might return this data, if it has
** not been destroyed.
** ^If it is not NULL, SQLite will invoke the destructor
** function given by the 4th parameter to sqlite3_set_auxdata() on
** the metadata when the corresponding function parameter changes
** or when the SQL statement completes, whichever comes first.
**
** SQLite is free to call the destructor and drop metadata on any
** parameter of any function at any time.  ^The only guarantee is that
** the destructor will be called before the metadata is dropped.
**
** ^(In practice, metadata is preserved between function calls for
** expressions that are constant at compile time. This includes literal
** values and [parameters].)^
**
** These routines must be called from the same thread in which
** the SQL function is running.
*/
SQLITE_API void *sqlite3_get_auxdata(sqlite3_context*, int N);
SQLITE_API void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*));


/*
** CAPI3REF: Constants Defining Special Destructor Behavior
**
** These are special values for the destructor that is passed in as the
** final argument to routines like [sqlite3_result_blob()].  ^If the destructor
** argument is SQLITE_STATIC, it means that the content pointer is constant
** and will never change.  It does not need to be destroyed.  ^The
** SQLITE_TRANSIENT value means that the content will likely change in
** the near future and that SQLite should make its own private copy of
** the content before returning.
**
** The typedef is necessary to work around problems in certain
** C++ compilers.  See ticket #2191.
*/
typedef void (*sqlite3_destructor_type)(void*);
#define SQLITE_STATIC      ((sqlite3_destructor_type)0)
#define SQLITE_TRANSIENT   ((sqlite3_destructor_type)-1)

/*
** CAPI3REF: Setting The Result Of An SQL Function
**
** These routines are used by the xFunc or xFinal callbacks that
** implement SQL functions and aggregates.  See
** [sqlite3_create_function()] and [sqlite3_create_function16()]
** for additional information.
**
** These functions work very much like the [parameter binding] family of
** functions used to bind values to host parameters in prepared statements.
** Refer to the [SQL parameter] documentation for additional information.
**
** ^The sqlite3_result_blob() interface sets the result from
** an application-defined function to be the BLOB whose content is pointed
** to by the second parameter and which is N bytes long where N is the
** third parameter.
**
** ^The sqlite3_result_zeroblob() interfaces set the result of
** the application-defined function to be a BLOB containing all zero
** bytes and N bytes in size, where N is the value of the 2nd parameter.
**
** ^The sqlite3_result_double() interface sets the result from
** an application-defined function to be a floating point value specified
** by its 2nd argument.
**
** ^The sqlite3_result_error() and sqlite3_result_error16() functions
** cause the implemented SQL function to throw an exception.
** ^SQLite uses the string pointed to by the
** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16()
** as the text of an error message.  ^SQLite interprets the error
** message string from sqlite3_result_error() as UTF-8. ^SQLite
** interprets the string from sqlite3_result_error16() as UTF-16 in native
** byte order.  ^If the third parameter to sqlite3_result_error()
** or sqlite3_result_error16() is negative then SQLite takes as the error
** message all text up through the first zero character.
** ^If the third parameter to sqlite3_result_error() or
** sqlite3_result_error16() is non-negative then SQLite takes that many
** bytes (not characters) from the 2nd parameter as the error message.
** ^The sqlite3_result_error() and sqlite3_result_error16()
** routines make a private copy of the error message text before
** they return.  Hence, the calling function can deallocate or
** modify the text after they return without harm.
** ^The sqlite3_result_error_code() function changes the error code
** returned by SQLite as a result of an error in a function.  ^By default,
** the error code is SQLITE_ERROR.  ^A subsequent call to sqlite3_result_error()
** or sqlite3_result_error16() resets the error code to SQLITE_ERROR.
**
** ^The sqlite3_result_toobig() interface causes SQLite to throw an error
** indicating that a string or BLOB is too long to represent.
**
** ^The sqlite3_result_nomem() interface causes SQLite to throw an error
** indicating that a memory allocation failed.
**
** ^The sqlite3_result_int() interface sets the return value
** of the application-defined function to be the 32-bit signed integer
** value given in the 2nd argument.
** ^The sqlite3_result_int64() interface sets the return value
** of the application-defined function to be the 64-bit signed integer
** value given in the 2nd argument.
**
** ^The sqlite3_result_null() interface sets the return value
** of the application-defined function to be NULL.
**
** ^The sqlite3_result_text(), sqlite3_result_text16(),
** sqlite3_result_text16le(), and sqlite3_result_text16be() interfaces
** set the return value of the application-defined function to be
** a text string which is represented as UTF-8, UTF-16 native byte order,
** UTF-16 little endian, or UTF-16 big endian, respectively.
** ^SQLite takes the text result from the application from
** the 2nd parameter of the sqlite3_result_text* interfaces.
** ^If the 3rd parameter to the sqlite3_result_text* interfaces
** is negative, then SQLite takes result text from the 2nd parameter
** through the first zero character.
** ^If the 3rd parameter to the sqlite3_result_text* interfaces
** is non-negative, then as many bytes (not characters) of the text
** pointed to by the 2nd parameter are taken as the application-defined
** function result.
** ^If the 4th parameter to the sqlite3_result_text* interfaces
** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that
** function as the destructor on the text or BLOB result when it has
** finished using that result.
** ^If the 4th parameter to the sqlite3_result_text* interfaces or to
** sqlite3_result_blob is the special constant SQLITE_STATIC, then SQLite
** assumes that the text or BLOB result is in constant space and does not
** copy the content of the parameter nor call a destructor on the content
** when it has finished using that result.
** ^If the 4th parameter to the sqlite3_result_text* interfaces
** or sqlite3_result_blob is the special constant SQLITE_TRANSIENT
** then SQLite makes a copy of the result into space obtained from
** from [sqlite3_malloc()] before it returns.
**
** ^The sqlite3_result_value() interface sets the result of
** the application-defined function to be a copy the
** [unprotected sqlite3_value] object specified by the 2nd parameter.  ^The
** sqlite3_result_value() interface makes a copy of the [sqlite3_value]
** so that the [sqlite3_value] specified in the parameter may change or
** be deallocated after sqlite3_result_value() returns without harm.
** ^A [protected sqlite3_value] object may always be used where an
** [unprotected sqlite3_value] object is required, so either
** kind of [sqlite3_value] object can be used with this interface.
**
** If these routines are called from within the different thread
** than the one containing the application-defined function that received
** the [sqlite3_context] pointer, the results are undefined.
*/
SQLITE_API void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
SQLITE_API void sqlite3_result_double(sqlite3_context*, double);
SQLITE_API void sqlite3_result_error(sqlite3_context*, const char*, int);
SQLITE_API void sqlite3_result_error16(sqlite3_context*, const void*, int);
SQLITE_API void sqlite3_result_error_toobig(sqlite3_context*);
SQLITE_API void sqlite3_result_error_nomem(sqlite3_context*);
SQLITE_API void sqlite3_result_error_code(sqlite3_context*, int);
SQLITE_API void sqlite3_result_int(sqlite3_context*, int);
SQLITE_API void sqlite3_result_int64(sqlite3_context*, sqlite3_int64);
SQLITE_API void sqlite3_result_null(sqlite3_context*);
SQLITE_API void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
SQLITE_API void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
SQLITE_API void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
SQLITE_API void sqlite3_result_zeroblob(sqlite3_context*, int n);

/*
** CAPI3REF: Define New Collating Sequences
**
** These functions are used to add new collation sequences to the
** [database connection] specified as the first argument.
**
** ^The name of the new collation sequence is specified as a UTF-8 string
** for sqlite3_create_collation() and sqlite3_create_collation_v2()
** and a UTF-16 string for sqlite3_create_collation16(). ^In all cases
** the name is passed as the second function argument.
**
** ^The third argument may be one of the constants [SQLITE_UTF8],
** [SQLITE_UTF16LE], or [SQLITE_UTF16BE], indicating that the user-supplied
** routine expects to be passed pointers to strings encoded using UTF-8,
** UTF-16 little-endian, or UTF-16 big-endian, respectively. ^The
** third argument might also be [SQLITE_UTF16] to indicate that the routine
** expects pointers to be UTF-16 strings in the native byte order, or the
** argument can be [SQLITE_UTF16_ALIGNED] if the
** the routine expects pointers to 16-bit word aligned strings
** of UTF-16 in the native byte order.
**
** A pointer to the user supplied routine must be passed as the fifth
** argument.  ^If it is NULL, this is the same as deleting the collation
** sequence (so that SQLite cannot call it anymore).
** ^Each time the application supplied function is invoked, it is passed
** as its first parameter a copy of the void* passed as the fourth argument
** to sqlite3_create_collation() or sqlite3_create_collation16().
**
** ^The remaining arguments to the application-supplied routine are two strings,
** each represented by a (length, data) pair and encoded in the encoding
** that was passed as the third argument when the collation sequence was
** registered.  The application defined collation routine should
** return negative, zero or positive if the first string is less than,
** equal to, or greater than the second string. i.e. (STRING1 - STRING2).
**
** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation()
** except that it takes an extra argument which is a destructor for
** the collation.  ^The destructor is called when the collation is
** destroyed and is passed a copy of the fourth parameter void* pointer
** of the sqlite3_create_collation_v2().
** ^Collations are destroyed when they are overridden by later calls to the
** collation creation functions or when the [database connection] is closed
** using [sqlite3_close()].
**
** See also:  [sqlite3_collation_needed()] and [sqlite3_collation_needed16()].
*/
SQLITE_API int sqlite3_create_collation(
  sqlite3*, 
  const char *zName, 
  int eTextRep, 
  void*,
  int(*xCompare)(void*,int,const void*,int,const void*)
);
SQLITE_API int sqlite3_create_collation_v2(
  sqlite3*, 
  const char *zName, 
  int eTextRep, 
  void*,
  int(*xCompare)(void*,int,const void*,int,const void*),
  void(*xDestroy)(void*)
);
SQLITE_API int sqlite3_create_collation16(
  sqlite3*, 
  const void *zName,
  int eTextRep, 
  void*,
  int(*xCompare)(void*,int,const void*,int,const void*)
);

/*
** CAPI3REF: Collation Needed Callbacks
**
** ^To avoid having to register all collation sequences before a database
** can be used, a single callback function may be registered with the
** [database connection] to be invoked whenever an undefined collation
** sequence is required.
**
** ^If the function is registered using the sqlite3_collation_needed() API,
** then it is passed the names of undefined collation sequences as strings
** encoded in UTF-8. ^If sqlite3_collation_needed16() is used,
** the names are passed as UTF-16 in machine native byte order.
** ^A call to either function replaces the existing collation-needed callback.
**
** ^(When the callback is invoked, the first argument passed is a copy
** of the second argument to sqlite3_collation_needed() or
** sqlite3_collation_needed16().  The second argument is the database
** connection.  The third argument is one of [SQLITE_UTF8], [SQLITE_UTF16BE],
** or [SQLITE_UTF16LE], indicating the most desirable form of the collation
** sequence function required.  The fourth parameter is the name of the
** required collation sequence.)^
**
** The callback function should register the desired collation using
** [sqlite3_create_collation()], [sqlite3_create_collation16()], or
** [sqlite3_create_collation_v2()].
*/
SQLITE_API int sqlite3_collation_needed(
  sqlite3*, 
  void*, 
  void(*)(void*,sqlite3*,int eTextRep,const char*)
);
SQLITE_API int sqlite3_collation_needed16(
  sqlite3*, 
  void*,
  void(*)(void*,sqlite3*,int eTextRep,const void*)
);

#ifdef SQLITE_HAS_CODEC
/*
** Specify the key for an encrypted database.  This routine should be
** called right after sqlite3_open().
**
** The code to implement this API is not available in the public release
** of SQLite.
*/
SQLITE_API int sqlite3_key(
  sqlite3 *db,                   /* Database to be rekeyed */
  const void *pKey, int nKey     /* The key */
);

/*
** Change the key on an open database.  If the current database is not
** encrypted, this routine will encrypt it.  If pNew==0 or nNew==0, the
** database is decrypted.
**
** The code to implement this API is not available in the public release
** of SQLite.
*/
SQLITE_API int sqlite3_rekey(
  sqlite3 *db,                   /* Database to be rekeyed */
  const void *pKey, int nKey     /* The new key */
);

/*
** Specify the activation key for a SEE database.  Unless 
** activated, none of the SEE routines will work.
*/
SQLITE_API void sqlite3_activate_see(
  const char *zPassPhrase        /* Activation phrase */
);
#endif

#ifdef SQLITE_ENABLE_CEROD
/*
** Specify the activation key for a CEROD database.  Unless 
** activated, none of the CEROD routines will work.
*/
SQLITE_API void sqlite3_activate_cerod(
  const char *zPassPhrase        /* Activation phrase */
);
#endif

/*
** CAPI3REF: Suspend Execution For A Short Time
**
** ^The sqlite3_sleep() function causes the current thread to suspend execution
** for at least a number of milliseconds specified in its parameter.
**
** ^If the operating system does not support sleep requests with
** millisecond time resolution, then the time will be rounded up to
** the nearest second. ^The number of milliseconds of sleep actually
** requested from the operating system is returned.
**
** ^SQLite implements this interface by calling the xSleep()
** method of the default [sqlite3_vfs] object.
*/
SQLITE_API int sqlite3_sleep(int);

/*
** CAPI3REF: Name Of The Folder Holding Temporary Files
**
** ^(If this global variable is made to point to a string which is
** the name of a folder (a.k.a. directory), then all temporary files
** created by SQLite when using a built-in [sqlite3_vfs | VFS]
** will be placed in that directory.)^  ^If this variable
** is a NULL pointer, then SQLite performs a search for an appropriate
** temporary file directory.
**
** It is not safe to read or modify this variable in more than one
** thread at a time.  It is not safe to read or modify this variable
** if a [database connection] is being used at the same time in a separate
** thread.
** It is intended that this variable be set once
** as part of process initialization and before any SQLite interface
** routines have been called and that this variable remain unchanged
** thereafter.
**
** ^The [temp_store_directory pragma] may modify this variable and cause
** it to point to memory obtained from [sqlite3_malloc].  ^Furthermore,
** the [temp_store_directory pragma] always assumes that any string
** that this variable points to is held in memory obtained from 
** [sqlite3_malloc] and the pragma may attempt to free that memory
** using [sqlite3_free].
** Hence, if this variable is modified directly, either it should be
** made NULL or made to point to memory obtained from [sqlite3_malloc]
** or else the use of the [temp_store_directory pragma] should be avoided.
*/
SQLITE_API SQLITE_EXTERN char *sqlite3_temp_directory;

/*
** CAPI3REF: Test For Auto-Commit Mode
** KEYWORDS: {autocommit mode}
**
** ^The sqlite3_get_autocommit() interface returns non-zero or
** zero if the given database connection is or is not in autocommit mode,
** respectively.  ^Autocommit mode is on by default.
** ^Autocommit mode is disabled by a [BEGIN] statement.
** ^Autocommit mode is re-enabled by a [COMMIT] or [ROLLBACK].
**
** If certain kinds of errors occur on a statement within a multi-statement
** transaction (errors including [SQLITE_FULL], [SQLITE_IOERR],
** [SQLITE_NOMEM], [SQLITE_BUSY], and [SQLITE_INTERRUPT]) then the
** transaction might be rolled back automatically.  The only way to
** find out whether SQLite automatically rolled back the transaction after
** an error is to use this function.
**
** If another thread changes the autocommit status of the database
** connection while this routine is running, then the return value
** is undefined.
*/
SQLITE_API int sqlite3_get_autocommit(sqlite3*);

/*
** CAPI3REF: Find The Database Handle Of A Prepared Statement
**
** ^The sqlite3_db_handle interface returns the [database connection] handle
** to which a [prepared statement] belongs.  ^The [database connection]
** returned by sqlite3_db_handle is the same [database connection]
** that was the first argument
** to the [sqlite3_prepare_v2()] call (or its variants) that was used to
** create the statement in the first place.
*/
SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);

/*
** CAPI3REF: Find the next prepared statement
**
** ^This interface returns a pointer to the next [prepared statement] after
** pStmt associated with the [database connection] pDb.  ^If pStmt is NULL
** then this interface returns a pointer to the first prepared statement
** associated with the database connection pDb.  ^If no prepared statement
** satisfies the conditions of this routine, it returns NULL.
**
** The [database connection] pointer D in a call to
** [sqlite3_next_stmt(D,S)] must refer to an open database
** connection and in particular must not be a NULL pointer.
*/
SQLITE_API sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt);

/*
** CAPI3REF: Commit And Rollback Notification Callbacks
**
** ^The sqlite3_commit_hook() interface registers a callback
** function to be invoked whenever a transaction is [COMMIT | committed].
** ^Any callback set by a previous call to sqlite3_commit_hook()
** for the same database connection is overridden.
** ^The sqlite3_rollback_hook() interface registers a callback
** function to be invoked whenever a transaction is [ROLLBACK | rolled back].
** ^Any callback set by a previous call to sqlite3_rollback_hook()
** for the same database connection is overridden.
** ^The pArg argument is passed through to the callback.
** ^If the callback on a commit hook function returns non-zero,
** then the commit is converted into a rollback.
**
** ^The sqlite3_commit_hook(D,C,P) and sqlite3_rollback_hook(D,C,P) functions
** return the P argument from the previous call of the same function
** on the same [database connection] D, or NULL for
** the first call for each function on D.
**
** The callback implementation must not do anything that will modify
** the database connection that invoked the callback.  Any actions
** to modify the database connection must be deferred until after the
** completion of the [sqlite3_step()] call that triggered the commit
** or rollback hook in the first place.
** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
** database connections for the meaning of "modify" in this paragraph.
**
** ^Registering a NULL function disables the callback.
**
** ^When the commit hook callback routine returns zero, the [COMMIT]
** operation is allowed to continue normally.  ^If the commit hook
** returns non-zero, then the [COMMIT] is converted into a [ROLLBACK].
** ^The rollback hook is invoked on a rollback that results from a commit
** hook returning non-zero, just as it would be with any other rollback.
**
** ^For the purposes of this API, a transaction is said to have been
** rolled back if an explicit "ROLLBACK" statement is executed, or
** an error or constraint causes an implicit rollback to occur.
** ^The rollback callback is not invoked if a transaction is
** automatically rolled back because the database connection is closed.
**
** See also the [sqlite3_update_hook()] interface.
*/
SQLITE_API void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*);
SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);

/*
** CAPI3REF: Data Change Notification Callbacks
**
** ^The sqlite3_update_hook() interface registers a callback function
** with the [database connection] identified by the first argument
** to be invoked whenever a row is updated, inserted or deleted.
** ^Any callback set by a previous call to this function
** for the same database connection is overridden.
**
** ^The second argument is a pointer to the function to invoke when a
** row is updated, inserted or deleted.
** ^The first argument to the callback is a copy of the third argument
** to sqlite3_update_hook().
** ^The second callback argument is one of [SQLITE_INSERT], [SQLITE_DELETE],
** or [SQLITE_UPDATE], depending on the operation that caused the callback
** to be invoked.
** ^The third and fourth arguments to the callback contain pointers to the
** database and table name containing the affected row.
** ^The final callback parameter is the [rowid] of the row.
** ^In the case of an update, this is the [rowid] after the update takes place.
**
** ^(The update hook is not invoked when internal system tables are
** modified (i.e. sqlite_master and sqlite_sequence).)^
**
** ^In the current implementation, the update hook
** is not invoked when duplication rows are deleted because of an
** [ON CONFLICT | ON CONFLICT REPLACE] clause.  ^Nor is the update hook
** invoked when rows are deleted using the [truncate optimization].
** The exceptions defined in this paragraph might change in a future
** release of SQLite.
**
** The update hook implementation must not do anything that will modify
** the database connection that invoked the update hook.  Any actions
** to modify the database connection must be deferred until after the
** completion of the [sqlite3_step()] call that triggered the update hook.
** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
** database connections for the meaning of "modify" in this paragraph.
**
** ^The sqlite3_update_hook(D,C,P) function
** returns the P argument from the previous call
** on the same [database connection] D, or NULL for
** the first call on D.
**
** See also the [sqlite3_commit_hook()] and [sqlite3_rollback_hook()]
** interfaces.
*/
SQLITE_API void *sqlite3_update_hook(
  sqlite3*, 
  void(*)(void *,int ,char const *,char const *,sqlite3_int64),
  void*
);

/*
** CAPI3REF: Enable Or Disable Shared Pager Cache
** KEYWORDS: {shared cache}
**
** ^(This routine enables or disables the sharing of the database cache
** and schema data structures between [database connection | connections]
** to the same database. Sharing is enabled if the argument is true
** and disabled if the argument is false.)^
**
** ^Cache sharing is enabled and disabled for an entire process.
** This is a change as of SQLite version 3.5.0. In prior versions of SQLite,
** sharing was enabled or disabled for each thread separately.
**
** ^(The cache sharing mode set by this interface effects all subsequent
** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()].
** Existing database connections continue use the sharing mode
** that was in effect at the time they were opened.)^
**
** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled
** successfully.  An [error code] is returned otherwise.)^
**
** ^Shared cache is disabled by default. But this might change in
** future releases of SQLite.  Applications that care about shared
** cache setting should set it explicitly.
**
** See Also:  [SQLite Shared-Cache Mode]
*/
SQLITE_API int sqlite3_enable_shared_cache(int);

/*
** CAPI3REF: Attempt To Free Heap Memory
**
** ^The sqlite3_release_memory() interface attempts to free N bytes
** of heap memory by deallocating non-essential memory allocations
** held by the database library.   Memory used to cache database
** pages to improve performance is an example of non-essential memory.
** ^sqlite3_release_memory() returns the number of bytes actually freed,
** which might be more or less than the amount requested.
*/
SQLITE_API int sqlite3_release_memory(int);

/*
** CAPI3REF: Impose A Limit On Heap Size
**
** ^The sqlite3_soft_heap_limit() interface places a "soft" limit
** on the amount of heap memory that may be allocated by SQLite.
** ^If an internal allocation is requested that would exceed the
** soft heap limit, [sqlite3_release_memory()] is invoked one or
** more times to free up some space before the allocation is performed.
**
** ^The limit is called "soft" because if [sqlite3_release_memory()]
** cannot free sufficient memory to prevent the limit from being exceeded,
** the memory is allocated anyway and the current operation proceeds.
**
** ^A negative or zero value for N means that there is no soft heap limit and
** [sqlite3_release_memory()] will only be called when memory is exhausted.
** ^The default value for the soft heap limit is zero.
**
** ^(SQLite makes a best effort to honor the soft heap limit.
** But if the soft heap limit cannot be honored, execution will
** continue without error or notification.)^  This is why the limit is
** called a "soft" limit.  It is advisory only.
**
** Prior to SQLite version 3.5.0, this routine only constrained the memory
** allocated by a single thread - the same thread in which this routine
** runs.  Beginning with SQLite version 3.5.0, the soft heap limit is
** applied to all threads. The value specified for the soft heap limit
** is an upper bound on the total memory allocation for all threads. In
** version 3.5.0 there is no mechanism for limiting the heap usage for
** individual threads.
*/
SQLITE_API void sqlite3_soft_heap_limit(int);

/*
** CAPI3REF: Extract Metadata About A Column Of A Table
**
** ^This routine returns metadata about a specific column of a specific
** database table accessible using the [database connection] handle
** passed as the first function argument.
**
** ^The column is identified by the second, third and fourth parameters to
** this function. ^The second parameter is either the name of the database
** (i.e. "main", "temp", or an attached database) containing the specified
** table or NULL. ^If it is NULL, then all attached databases are searched
** for the table using the same algorithm used by the database engine to
** resolve unqualified table references.
**
** ^The third and fourth parameters to this function are the table and column
** name of the desired column, respectively. Neither of these parameters
** may be NULL.
**
** ^Metadata is returned by writing to the memory locations passed as the 5th
** and subsequent parameters to this function. ^Any of these arguments may be
** NULL, in which case the corresponding element of metadata is omitted.
**
** ^(<blockquote>
** <table border="1">
** <tr><th> Parameter <th> Output<br>Type <th>  Description
**
** <tr><td> 5th <td> const char* <td> Data type
** <tr><td> 6th <td> const char* <td> Name of default collation sequence
** <tr><td> 7th <td> int         <td> True if column has a NOT NULL constraint
** <tr><td> 8th <td> int         <td> True if column is part of the PRIMARY KEY
** <tr><td> 9th <td> int         <td> True if column is [AUTOINCREMENT]
** </table>
** </blockquote>)^
**
** ^The memory pointed to by the character pointers returned for the
** declaration type and collation sequence is valid only until the next
** call to any SQLite API function.
**
** ^If the specified table is actually a view, an [error code] is returned.
**
** ^If the specified column is "rowid", "oid" or "_rowid_" and an
** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output
** parameters are set for the explicitly declared column. ^(If there is no
** explicitly declared [INTEGER PRIMARY KEY] column, then the output
** parameters are set as follows:
**
** <pre>
**     data type: "INTEGER"
**     collation sequence: "BINARY"
**     not null: 0
**     primary key: 1
**     auto increment: 0
** </pre>)^
**
** ^(This function may load one or more schemas from database files. If an
** error occurs during this process, or if the requested table or column
** cannot be found, an [error code] is returned and an error message left
** in the [database connection] (to be retrieved using sqlite3_errmsg()).)^
**
** ^This API is only available if the library was compiled with the
** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol defined.
*/
SQLITE_API int sqlite3_table_column_metadata(
  sqlite3 *db,                /* Connection handle */
  const char *zDbName,        /* Database name or NULL */
  const char *zTableName,     /* Table name */
  const char *zColumnName,    /* Column name */
  char const **pzDataType,    /* OUTPUT: Declared data type */
  char const **pzCollSeq,     /* OUTPUT: Collation sequence name */
  int *pNotNull,              /* OUTPUT: True if NOT NULL constraint exists */
  int *pPrimaryKey,           /* OUTPUT: True if column part of PK */
  int *pAutoinc               /* OUTPUT: True if column is auto-increment */
);

/*
** CAPI3REF: Load An Extension
**
** ^This interface loads an SQLite extension library from the named file.
**
** ^The sqlite3_load_extension() interface attempts to load an
** SQLite extension library contained in the file zFile.
**
** ^The entry point is zProc.
** ^zProc may be 0, in which case the name of the entry point
** defaults to "sqlite3_extension_init".
** ^The sqlite3_load_extension() interface returns
** [SQLITE_OK] on success and [SQLITE_ERROR] if something goes wrong.
** ^If an error occurs and pzErrMsg is not 0, then the
** [sqlite3_load_extension()] interface shall attempt to
** fill *pzErrMsg with error message text stored in memory
** obtained from [sqlite3_malloc()]. The calling function
** should free this memory by calling [sqlite3_free()].
**
** ^Extension loading must be enabled using
** [sqlite3_enable_load_extension()] prior to calling this API,
** otherwise an error will be returned.
**
** See also the [load_extension() SQL function].
*/
SQLITE_API int sqlite3_load_extension(
  sqlite3 *db,          /* Load the extension into this database connection */
  const char *zFile,    /* Name of the shared library containing extension */
  const char *zProc,    /* Entry point.  Derived from zFile if 0 */
  char **pzErrMsg       /* Put error message here if not 0 */
);

/*
** CAPI3REF: Enable Or Disable Extension Loading
**
** ^So as not to open security holes in older applications that are
** unprepared to deal with extension loading, and as a means of disabling
** extension loading while evaluating user-entered SQL, the following API
** is provided to turn the [sqlite3_load_extension()] mechanism on and off.
**
** ^Extension loading is off by default. See ticket #1863.
** ^Call the sqlite3_enable_load_extension() routine with onoff==1
** to turn extension loading on and call it with onoff==0 to turn
** it back off again.
*/
SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff);

/*
** CAPI3REF: Automatically Load An Extensions
**
** ^This API can be invoked at program startup in order to register
** one or more statically linked extensions that will be available
** to all new [database connections].
**
** ^(This routine stores a pointer to the extension entry point
** in an array that is obtained from [sqlite3_malloc()].  That memory
** is deallocated by [sqlite3_reset_auto_extension()].)^
**
** ^This function registers an extension entry point that is
** automatically invoked whenever a new [database connection]
** is opened using [sqlite3_open()], [sqlite3_open16()],
** or [sqlite3_open_v2()].
** ^Duplicate extensions are detected so calling this routine
** multiple times with the same extension is harmless.
** ^Automatic extensions apply across all threads.
*/
SQLITE_API int sqlite3_auto_extension(void (*xEntryPoint)(void));

/*
** CAPI3REF: Reset Automatic Extension Loading
**
** ^(This function disables all previously registered automatic
** extensions. It undoes the effect of all prior
** [sqlite3_auto_extension()] calls.)^
**
** ^This function disables automatic extensions in all threads.
*/
SQLITE_API void sqlite3_reset_auto_extension(void);

/*
** The interface to the virtual-table mechanism is currently considered
** to be experimental.  The interface might change in incompatible ways.
** If this is a problem for you, do not use the interface at this time.
**
** When the virtual-table mechanism stabilizes, we will declare the
** interface fixed, support it indefinitely, and remove this comment.
*/

/*
** Structures used by the virtual table interface
*/
typedef struct sqlite3_vtab sqlite3_vtab;
typedef struct sqlite3_index_info sqlite3_index_info;
typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor;
typedef struct sqlite3_module sqlite3_module;

/*
** CAPI3REF: Virtual Table Object
** KEYWORDS: sqlite3_module {virtual table module}
**
** This structure, sometimes called a a "virtual table module", 
** defines the implementation of a [virtual tables].  
** This structure consists mostly of methods for the module.
**
** ^A virtual table module is created by filling in a persistent
** instance of this structure and passing a pointer to that instance
** to [sqlite3_create_module()] or [sqlite3_create_module_v2()].
** ^The registration remains valid until it is replaced by a different
** module or until the [database connection] closes.  The content
** of this structure must not change while it is registered with
** any database connection.
*/
struct sqlite3_module {
  int iVersion;
  int (*xCreate)(sqlite3*, void *pAux,
               int argc, const char *const*argv,
               sqlite3_vtab **ppVTab, char**);
  int (*xConnect)(sqlite3*, void *pAux,
               int argc, const char *const*argv,
               sqlite3_vtab **ppVTab, char**);
  int (*xBestIndex)(sqlite3_vtab *pVTab, sqlite3_index_info*);
  int (*xDisconnect)(sqlite3_vtab *pVTab);
  int (*xDestroy)(sqlite3_vtab *pVTab);
  int (*xOpen)(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor);
  int (*xClose)(sqlite3_vtab_cursor*);
  int (*xFilter)(sqlite3_vtab_cursor*, int idxNum, const char *idxStr,
                int argc, sqlite3_value **argv);
  int (*xNext)(sqlite3_vtab_cursor*);
  int (*xEof)(sqlite3_vtab_cursor*);
  int (*xColumn)(sqlite3_vtab_cursor*, sqlite3_context*, int);
  int (*xRowid)(sqlite3_vtab_cursor*, sqlite3_int64 *pRowid);
  int (*xUpdate)(sqlite3_vtab *, int, sqlite3_value **, sqlite3_int64 *);
  int (*xBegin)(sqlite3_vtab *pVTab);
  int (*xSync)(sqlite3_vtab *pVTab);
  int (*xCommit)(sqlite3_vtab *pVTab);
  int (*xRollback)(sqlite3_vtab *pVTab);
  int (*xFindFunction)(sqlite3_vtab *pVtab, int nArg, const char *zName,
                       void (**pxFunc)(sqlite3_context*,int,sqlite3_value**),
                       void **ppArg);
  int (*xRename)(sqlite3_vtab *pVtab, const char *zNew);
};

/*
** CAPI3REF: Virtual Table Indexing Information
** KEYWORDS: sqlite3_index_info
**
** The sqlite3_index_info structure and its substructures is used to
** pass information into and receive the reply from the [xBestIndex]
** method of a [virtual table module].  The fields under **Inputs** are the
** inputs to xBestIndex and are read-only.  xBestIndex inserts its
** results into the **Outputs** fields.
**
** ^(The aConstraint[] array records WHERE clause constraints of the form:
**
** <pre>column OP expr</pre>
**
** where OP is =, &lt;, &lt;=, &gt;, or &gt;=.)^  ^(The particular operator is
** stored in aConstraint[].op.)^  ^(The index of the column is stored in
** aConstraint[].iColumn.)^  ^(aConstraint[].usable is TRUE if the
** expr on the right-hand side can be evaluated (and thus the constraint
** is usable) and false if it cannot.)^
**
** ^The optimizer automatically inverts terms of the form "expr OP column"
** and makes other simplifications to the WHERE clause in an attempt to
** get as many WHERE clause terms into the form shown above as possible.
** ^The aConstraint[] array only reports WHERE clause terms that are
** relevant to the particular virtual table being queried.
**
** ^Information about the ORDER BY clause is stored in aOrderBy[].
** ^Each term of aOrderBy records a column of the ORDER BY clause.
**
** The [xBestIndex] method must fill aConstraintUsage[] with information
** about what parameters to pass to xFilter.  ^If argvIndex>0 then
** the right-hand side of the corresponding aConstraint[] is evaluated
** and becomes the argvIndex-th entry in argv.  ^(If aConstraintUsage[].omit
** is true, then the constraint is assumed to be fully handled by the
** virtual table and is not checked again by SQLite.)^
**
** ^The idxNum and idxPtr values are recorded and passed into the
** [xFilter] method.
** ^[sqlite3_free()] is used to free idxPtr if and only if
** needToFreeIdxPtr is true.
**
** ^The orderByConsumed means that output from [xFilter]/[xNext] will occur in
** the correct order to satisfy the ORDER BY clause so that no separate
** sorting step is required.
**
** ^The estimatedCost value is an estimate of the cost of doing the
** particular lookup.  A full scan of a table with N entries should have
** a cost of N.  A binary search of a table of N entries should have a
** cost of approximately log(N).
*/
struct sqlite3_index_info {
  /* Inputs */
  int nConstraint;           /* Number of entries in aConstraint */
  struct sqlite3_index_constraint {
     int iColumn;              /* Column on left-hand side of constraint */
     unsigned char op;         /* Constraint operator */
     unsigned char usable;     /* True if this constraint is usable */
     int iTermOffset;          /* Used internally - xBestIndex should ignore */
  } *aConstraint;            /* Table of WHERE clause constraints */
  int nOrderBy;              /* Number of terms in the ORDER BY clause */
  struct sqlite3_index_orderby {
     int iColumn;              /* Column number */
     unsigned char desc;       /* True for DESC.  False for ASC. */
  } *aOrderBy;               /* The ORDER BY clause */
  /* Outputs */
  struct sqlite3_index_constraint_usage {
    int argvIndex;           /* if >0, constraint is part of argv to xFilter */
    unsigned char omit;      /* Do not code a test for this constraint */
  } *aConstraintUsage;
  int idxNum;                /* Number used to identify the index */
  char *idxStr;              /* String, possibly obtained from sqlite3_malloc */
  int needToFreeIdxStr;      /* Free idxStr using sqlite3_free() if true */
  int orderByConsumed;       /* True if output is already ordered */
  double estimatedCost;      /* Estimated cost of using this index */
};
#define SQLITE_INDEX_CONSTRAINT_EQ    2
#define SQLITE_INDEX_CONSTRAINT_GT    4
#define SQLITE_INDEX_CONSTRAINT_LE    8
#define SQLITE_INDEX_CONSTRAINT_LT    16
#define SQLITE_INDEX_CONSTRAINT_GE    32
#define SQLITE_INDEX_CONSTRAINT_MATCH 64

/*
** CAPI3REF: Register A Virtual Table Implementation
**
** ^These routines are used to register a new [virtual table module] name.
** ^Module names must be registered before
** creating a new [virtual table] using the module and before using a
** preexisting [virtual table] for the module.
**
** ^The module name is registered on the [database connection] specified
** by the first parameter.  ^The name of the module is given by the 
** second parameter.  ^The third parameter is a pointer to
** the implementation of the [virtual table module].   ^The fourth
** parameter is an arbitrary client data pointer that is passed through
** into the [xCreate] and [xConnect] methods of the virtual table module
** when a new virtual table is be being created or reinitialized.
**
** ^The sqlite3_create_module_v2() interface has a fifth parameter which
** is a pointer to a destructor for the pClientData.  ^SQLite will
** invoke the destructor function (if it is not NULL) when SQLite
** no longer needs the pClientData pointer.  ^The sqlite3_create_module()
** interface is equivalent to sqlite3_create_module_v2() with a NULL
** destructor.
*/
SQLITE_API int sqlite3_create_module(
  sqlite3 *db,               /* SQLite connection to register module with */
  const char *zName,         /* Name of the module */
  const sqlite3_module *p,   /* Methods for the module */
  void *pClientData          /* Client data for xCreate/xConnect */
);
SQLITE_API int sqlite3_create_module_v2(
  sqlite3 *db,               /* SQLite connection to register module with */
  const char *zName,         /* Name of the module */
  const sqlite3_module *p,   /* Methods for the module */
  void *pClientData,         /* Client data for xCreate/xConnect */
  void(*xDestroy)(void*)     /* Module destructor function */
);

/*
** CAPI3REF: Virtual Table Instance Object
** KEYWORDS: sqlite3_vtab
**
** Every [virtual table module] implementation uses a subclass
** of this object to describe a particular instance
** of the [virtual table].  Each subclass will
** be tailored to the specific needs of the module implementation.
** The purpose of this superclass is to define certain fields that are
** common to all module implementations.
**
** ^Virtual tables methods can set an error message by assigning a
** string obtained from [sqlite3_mprintf()] to zErrMsg.  The method should
** take care that any prior string is freed by a call to [sqlite3_free()]
** prior to assigning a new string to zErrMsg.  ^After the error message
** is delivered up to the client application, the string will be automatically
** freed by sqlite3_free() and the zErrMsg field will be zeroed.
*/
struct sqlite3_vtab {
  const sqlite3_module *pModule;  /* The module for this virtual table */
  int nRef;                       /* NO LONGER USED */
  char *zErrMsg;                  /* Error message from sqlite3_mprintf() */
  /* Virtual table implementations will typically add additional fields */
};

/*
** CAPI3REF: Virtual Table Cursor Object
** KEYWORDS: sqlite3_vtab_cursor {virtual table cursor}
**
** Every [virtual table module] implementation uses a subclass of the
** following structure to describe cursors that point into the
** [virtual table] and are used
** to loop through the virtual table.  Cursors are created using the
** [sqlite3_module.xOpen | xOpen] method of the module and are destroyed
** by the [sqlite3_module.xClose | xClose] method.  Cursors are used
** by the [xFilter], [xNext], [xEof], [xColumn], and [xRowid] methods
** of the module.  Each module implementation will define
** the content of a cursor structure to suit its own needs.
**
** This superclass exists in order to define fields of the cursor that
** are common to all implementations.
*/
struct sqlite3_vtab_cursor {
  sqlite3_vtab *pVtab;      /* Virtual table of this cursor */
  /* Virtual table implementations will typically add additional fields */
};

/*
** CAPI3REF: Declare The Schema Of A Virtual Table
**
** ^The [xCreate] and [xConnect] methods of a
** [virtual table module] call this interface
** to declare the format (the names and datatypes of the columns) of
** the virtual tables they implement.
*/
SQLITE_API int sqlite3_declare_vtab(sqlite3*, const char *zSQL);

/*
** CAPI3REF: Overload A Function For A Virtual Table
**
** ^(Virtual tables can provide alternative implementations of functions
** using the [xFindFunction] method of the [virtual table module].  
** But global versions of those functions
** must exist in order to be overloaded.)^
**
** ^(This API makes sure a global version of a function with a particular
** name and number of parameters exists.  If no such function exists
** before this API is called, a new function is created.)^  ^The implementation
** of the new function always causes an exception to be thrown.  So
** the new function is not good for anything by itself.  Its only
** purpose is to be a placeholder function that can be overloaded
** by a [virtual table].
*/
SQLITE_API int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg);

/*
** The interface to the virtual-table mechanism defined above (back up
** to a comment remarkably similar to this one) is currently considered
** to be experimental.  The interface might change in incompatible ways.
** If this is a problem for you, do not use the interface at this time.
**
** When the virtual-table mechanism stabilizes, we will declare the
** interface fixed, support it indefinitely, and remove this comment.
*/

/*
** CAPI3REF: A Handle To An Open BLOB
** KEYWORDS: {BLOB handle} {BLOB handles}
**
** An instance of this object represents an open BLOB on which
** [sqlite3_blob_open | incremental BLOB I/O] can be performed.
** ^Objects of this type are created by [sqlite3_blob_open()]
** and destroyed by [sqlite3_blob_close()].
** ^The [sqlite3_blob_read()] and [sqlite3_blob_write()] interfaces
** can be used to read or write small subsections of the BLOB.
** ^The [sqlite3_blob_bytes()] interface returns the size of the BLOB in bytes.
*/
typedef struct sqlite3_blob sqlite3_blob;

/*
** CAPI3REF: Open A BLOB For Incremental I/O
**
** ^(This interfaces opens a [BLOB handle | handle] to the BLOB located
** in row iRow, column zColumn, table zTable in database zDb;
** in other words, the same BLOB that would be selected by:
**
** <pre>
**     SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
** </pre>)^
**
** ^If the flags parameter is non-zero, then the BLOB is opened for read
** and write access. ^If it is zero, the BLOB is opened for read access.
** ^It is not possible to open a column that is part of an index or primary 
** key for writing. ^If [foreign key constraints] are enabled, it is 
** not possible to open a column that is part of a [child key] for writing.
**
** ^Note that the database name is not the filename that contains
** the database but rather the symbolic name of the database that
** appears after the AS keyword when the database is connected using [ATTACH].
** ^For the main database file, the database name is "main".
** ^For TEMP tables, the database name is "temp".
**
** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is written
** to *ppBlob. Otherwise an [error code] is returned and *ppBlob is set
** to be a null pointer.)^
** ^This function sets the [database connection] error code and message
** accessible via [sqlite3_errcode()] and [sqlite3_errmsg()] and related
** functions. ^Note that the *ppBlob variable is always initialized in a
** way that makes it safe to invoke [sqlite3_blob_close()] on *ppBlob
** regardless of the success or failure of this routine.
**
** ^(If the row that a BLOB handle points to is modified by an
** [UPDATE], [DELETE], or by [ON CONFLICT] side-effects
** then the BLOB handle is marked as "expired".
** This is true if any column of the row is changed, even a column
** other than the one the BLOB handle is open on.)^
** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for
** a expired BLOB handle fail with an return code of [SQLITE_ABORT].
** ^(Changes written into a BLOB prior to the BLOB expiring are not
** rolled back by the expiration of the BLOB.  Such changes will eventually
** commit if the transaction continues to completion.)^
**
** ^Use the [sqlite3_blob_bytes()] interface to determine the size of
** the opened blob.  ^The size of a blob may not be changed by this
** interface.  Use the [UPDATE] SQL command to change the size of a
** blob.
**
** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces
** and the built-in [zeroblob] SQL function can be used, if desired,
** to create an empty, zero-filled blob in which to read or write using
** this interface.
**
** To avoid a resource leak, every open [BLOB handle] should eventually
** be released by a call to [sqlite3_blob_close()].
*/
SQLITE_API int sqlite3_blob_open(
  sqlite3*,
  const char *zDb,
  const char *zTable,
  const char *zColumn,
  sqlite3_int64 iRow,
  int flags,
  sqlite3_blob **ppBlob
);

/*
** CAPI3REF: Close A BLOB Handle
**
** ^Closes an open [BLOB handle].
**
** ^Closing a BLOB shall cause the current transaction to commit
** if there are no other BLOBs, no pending prepared statements, and the
** database connection is in [autocommit mode].
** ^If any writes were made to the BLOB, they might be held in cache
** until the close operation if they will fit.
**
** ^(Closing the BLOB often forces the changes
** out to disk and so if any I/O errors occur, they will likely occur
** at the time when the BLOB is closed.  Any errors that occur during
** closing are reported as a non-zero return value.)^
**
** ^(The BLOB is closed unconditionally.  Even if this routine returns
** an error code, the BLOB is still closed.)^
**
** ^Calling this routine with a null pointer (such as would be returned
** by a failed call to [sqlite3_blob_open()]) is a harmless no-op.
*/
SQLITE_API int sqlite3_blob_close(sqlite3_blob *);

/*
** CAPI3REF: Return The Size Of An Open BLOB
**
** ^Returns the size in bytes of the BLOB accessible via the 
** successfully opened [BLOB handle] in its only argument.  ^The
** incremental blob I/O routines can only read or overwriting existing
** blob content; they cannot change the size of a blob.
**
** This routine only works on a [BLOB handle] which has been created
** by a prior successful call to [sqlite3_blob_open()] and which has not
** been closed by [sqlite3_blob_close()].  Passing any other pointer in
** to this routine results in undefined and probably undesirable behavior.
*/
SQLITE_API int sqlite3_blob_bytes(sqlite3_blob *);

/*
** CAPI3REF: Read Data From A BLOB Incrementally
**
** ^(This function is used to read data from an open [BLOB handle] into a
** caller-supplied buffer. N bytes of data are copied into buffer Z
** from the open BLOB, starting at offset iOffset.)^
**
** ^If offset iOffset is less than N bytes from the end of the BLOB,
** [SQLITE_ERROR] is returned and no data is read.  ^If N or iOffset is
** less than zero, [SQLITE_ERROR] is returned and no data is read.
** ^The size of the blob (and hence the maximum value of N+iOffset)
** can be determined using the [sqlite3_blob_bytes()] interface.
**
** ^An attempt to read from an expired [BLOB handle] fails with an
** error code of [SQLITE_ABORT].
**
** ^(On success, sqlite3_blob_read() returns SQLITE_OK.
** Otherwise, an [error code] or an [extended error code] is returned.)^
**
** This routine only works on a [BLOB handle] which has been created
** by a prior successful call to [sqlite3_blob_open()] and which has not
** been closed by [sqlite3_blob_close()].  Passing any other pointer in
** to this routine results in undefined and probably undesirable behavior.
**
** See also: [sqlite3_blob_write()].
*/
SQLITE_API int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);

/*
** CAPI3REF: Write Data Into A BLOB Incrementally
**
** ^This function is used to write data into an open [BLOB handle] from a
** caller-supplied buffer. ^N bytes of data are copied from the buffer Z
** into the open BLOB, starting at offset iOffset.
**
** ^If the [BLOB handle] passed as the first argument was not opened for
** writing (the flags parameter to [sqlite3_blob_open()] was zero),
** this function returns [SQLITE_READONLY].
**
** ^This function may only modify the contents of the BLOB; it is
** not possible to increase the size of a BLOB using this API.
** ^If offset iOffset is less than N bytes from the end of the BLOB,
** [SQLITE_ERROR] is returned and no data is written.  ^If N is
** less than zero [SQLITE_ERROR] is returned and no data is written.
** The size of the BLOB (and hence the maximum value of N+iOffset)
** can be determined using the [sqlite3_blob_bytes()] interface.
**
** ^An attempt to write to an expired [BLOB handle] fails with an
** error code of [SQLITE_ABORT].  ^Writes to the BLOB that occurred
** before the [BLOB handle] expired are not rolled back by the
** expiration of the handle, though of course those changes might
** have been overwritten by the statement that expired the BLOB handle
** or by other independent statements.
**
** ^(On success, sqlite3_blob_write() returns SQLITE_OK.
** Otherwise, an  [error code] or an [extended error code] is returned.)^
**
** This routine only works on a [BLOB handle] which has been created
** by a prior successful call to [sqlite3_blob_open()] and which has not
** been closed by [sqlite3_blob_close()].  Passing any other pointer in
** to this routine results in undefined and probably undesirable behavior.
**
** See also: [sqlite3_blob_read()].
*/
SQLITE_API int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset);

/*
** CAPI3REF: Virtual File System Objects
**
** A virtual filesystem (VFS) is an [sqlite3_vfs] object
** that SQLite uses to interact
** with the underlying operating system.  Most SQLite builds come with a
** single default VFS that is appropriate for the host computer.
** New VFSes can be registered and existing VFSes can be unregistered.
** The following interfaces are provided.
**
** ^The sqlite3_vfs_find() interface returns a pointer to a VFS given its name.
** ^Names are case sensitive.
** ^Names are zero-terminated UTF-8 strings.
** ^If there is no match, a NULL pointer is returned.
** ^If zVfsName is NULL then the default VFS is returned.
**
** ^New VFSes are registered with sqlite3_vfs_register().
** ^Each new VFS becomes the default VFS if the makeDflt flag is set.
** ^The same VFS can be registered multiple times without injury.
** ^To make an existing VFS into the default VFS, register it again
** with the makeDflt flag set.  If two different VFSes with the
** same name are registered, the behavior is undefined.  If a
** VFS is registered with a name that is NULL or an empty string,
** then the behavior is undefined.
**
** ^Unregister a VFS with the sqlite3_vfs_unregister() interface.
** ^(If the default VFS is unregistered, another VFS is chosen as
** the default.  The choice for the new VFS is arbitrary.)^
*/
SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName);
SQLITE_API int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt);
SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*);

/*
** CAPI3REF: Mutexes
**
** The SQLite core uses these routines for thread
** synchronization. Though they are intended for internal
** use by SQLite, code that links against SQLite is
** permitted to use any of these routines.
**
** The SQLite source code contains multiple implementations
** of these mutex routines.  An appropriate implementation
** is selected automatically at compile-time.  ^(The following
** implementations are available in the SQLite core:
**
** <ul>
** <li>   SQLITE_MUTEX_OS2
** <li>   SQLITE_MUTEX_PTHREAD
** <li>   SQLITE_MUTEX_W32
** <li>   SQLITE_MUTEX_NOOP
** </ul>)^
**
** ^The SQLITE_MUTEX_NOOP implementation is a set of routines
** that does no real locking and is appropriate for use in
** a single-threaded application.  ^The SQLITE_MUTEX_OS2,
** SQLITE_MUTEX_PTHREAD, and SQLITE_MUTEX_W32 implementations
** are appropriate for use on OS/2, Unix, and Windows.
**
** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
** macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex
** implementation is included with the library. In this case the
** application must supply a custom mutex implementation using the
** [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function
** before calling sqlite3_initialize() or any other public sqlite3_
** function that calls sqlite3_initialize().)^
**
** ^The sqlite3_mutex_alloc() routine allocates a new
** mutex and returns a pointer to it. ^If it returns NULL
** that means that a mutex could not be allocated.  ^SQLite
** will unwind its stack and return an error.  ^(The argument
** to sqlite3_mutex_alloc() is one of these integer constants:
**
** <ul>
** <li>  SQLITE_MUTEX_FAST
** <li>  SQLITE_MUTEX_RECURSIVE
** <li>  SQLITE_MUTEX_STATIC_MASTER
** <li>  SQLITE_MUTEX_STATIC_MEM
** <li>  SQLITE_MUTEX_STATIC_MEM2
** <li>  SQLITE_MUTEX_STATIC_PRNG
** <li>  SQLITE_MUTEX_STATIC_LRU
** <li>  SQLITE_MUTEX_STATIC_LRU2
** </ul>)^
**
** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE)
** cause sqlite3_mutex_alloc() to create
** a new mutex.  ^The new mutex is recursive when SQLITE_MUTEX_RECURSIVE
** is used but not necessarily so when SQLITE_MUTEX_FAST is used.
** The mutex implementation does not need to make a distinction
** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does
** not want to.  ^SQLite will only request a recursive mutex in
** cases where it really needs one.  ^If a faster non-recursive mutex
** implementation is available on the host platform, the mutex subsystem
** might return such a mutex in response to SQLITE_MUTEX_FAST.
**
** ^The other allowed parameters to sqlite3_mutex_alloc() (anything other
** than SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) each return
** a pointer to a static preexisting mutex.  ^Six static mutexes are
** used by the current version of SQLite.  Future versions of SQLite
** may add additional static mutexes.  Static mutexes are for internal
** use by SQLite only.  Applications that use SQLite mutexes should
** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or
** SQLITE_MUTEX_RECURSIVE.
**
** ^Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST
** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc()
** returns a different mutex on every call.  ^But for the static
** mutex types, the same mutex is returned on every call that has
** the same type number.
**
** ^The sqlite3_mutex_free() routine deallocates a previously
** allocated dynamic mutex.  ^SQLite is careful to deallocate every
** dynamic mutex that it allocates.  The dynamic mutexes must not be in
** use when they are deallocated.  Attempting to deallocate a static
** mutex results in undefined behavior.  ^SQLite never deallocates
** a static mutex.
**
** ^The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt
** to enter a mutex.  ^If another thread is already within the mutex,
** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return
** SQLITE_BUSY.  ^The sqlite3_mutex_try() interface returns [SQLITE_OK]
** upon successful entry.  ^(Mutexes created using
** SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread.
** In such cases the,
** mutex must be exited an equal number of times before another thread
** can enter.)^  ^(If the same thread tries to enter any other
** kind of mutex more than once, the behavior is undefined.
** SQLite will never exhibit
** such behavior in its own use of mutexes.)^
**
** ^(Some systems (for example, Windows 95) do not support the operation
** implemented by sqlite3_mutex_try().  On those systems, sqlite3_mutex_try()
** will always return SQLITE_BUSY.  The SQLite core only ever uses
** sqlite3_mutex_try() as an optimization so this is acceptable behavior.)^
**
** ^The sqlite3_mutex_leave() routine exits a mutex that was
** previously entered by the same thread.   ^(The behavior
** is undefined if the mutex is not currently entered by the
** calling thread or is not currently allocated.  SQLite will
** never do either.)^
**
** ^If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or
** sqlite3_mutex_leave() is a NULL pointer, then all three routines
** behave as no-ops.
**
** See also: [sqlite3_mutex_held()] and [sqlite3_mutex_notheld()].
*/
SQLITE_API sqlite3_mutex *sqlite3_mutex_alloc(int);
SQLITE_API void sqlite3_mutex_free(sqlite3_mutex*);
SQLITE_API void sqlite3_mutex_enter(sqlite3_mutex*);
SQLITE_API int sqlite3_mutex_try(sqlite3_mutex*);
SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*);

/*
** CAPI3REF: Mutex Methods Object
**
** An instance of this structure defines the low-level routines
** used to allocate and use mutexes.
**
** Usually, the default mutex implementations provided by SQLite are
** sufficient, however the user has the option of substituting a custom
** implementation for specialized deployments or systems for which SQLite
** does not provide a suitable implementation. In this case, the user
** creates and populates an instance of this structure to pass
** to sqlite3_config() along with the [SQLITE_CONFIG_MUTEX] option.
** Additionally, an instance of this structure can be used as an
** output variable when querying the system for the current mutex
** implementation, using the [SQLITE_CONFIG_GETMUTEX] option.
**
** ^The xMutexInit method defined by this structure is invoked as
** part of system initialization by the sqlite3_initialize() function.
** ^The xMutexInit routine is calle by SQLite exactly once for each
** effective call to [sqlite3_initialize()].
**
** ^The xMutexEnd method defined by this structure is invoked as
** part of system shutdown by the sqlite3_shutdown() function. The
** implementation of this method is expected to release all outstanding
** resources obtained by the mutex methods implementation, especially
** those obtained by the xMutexInit method.  ^The xMutexEnd()
** interface is invoked exactly once for each call to [sqlite3_shutdown()].
**
** ^(The remaining seven methods defined by this structure (xMutexAlloc,
** xMutexFree, xMutexEnter, xMutexTry, xMutexLeave, xMutexHeld and
** xMutexNotheld) implement the following interfaces (respectively):
**
** <ul>
**   <li>  [sqlite3_mutex_alloc()] </li>
**   <li>  [sqlite3_mutex_free()] </li>
**   <li>  [sqlite3_mutex_enter()] </li>
**   <li>  [sqlite3_mutex_try()] </li>
**   <li>  [sqlite3_mutex_leave()] </li>
**   <li>  [sqlite3_mutex_held()] </li>
**   <li>  [sqlite3_mutex_notheld()] </li>
** </ul>)^
**
** The only difference is that the public sqlite3_XXX functions enumerated
** above silently ignore any invocations that pass a NULL pointer instead
** of a valid mutex handle. The implementations of the methods defined
** by this structure are not required to handle this case, the results
** of passing a NULL pointer instead of a valid mutex handle are undefined
** (i.e. it is acceptable to provide an implementation that segfaults if
** it is passed a NULL pointer).
**
** The xMutexInit() method must be threadsafe.  ^It must be harmless to
** invoke xMutexInit() mutiple times within the same process and without
** intervening calls to xMutexEnd().  Second and subsequent calls to
** xMutexInit() must be no-ops.
**
** ^xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()]
** and its associates).  ^Similarly, xMutexAlloc() must not use SQLite memory
** allocation for a static mutex.  ^However xMutexAlloc() may use SQLite
** memory allocation for a fast or recursive mutex.
**
** ^SQLite will invoke the xMutexEnd() method when [sqlite3_shutdown()] is
** called, but only if the prior call to xMutexInit returned SQLITE_OK.
** If xMutexInit fails in any way, it is expected to clean up after itself
** prior to returning.
*/
typedef struct sqlite3_mutex_methods sqlite3_mutex_methods;
struct sqlite3_mutex_methods {
  int (*xMutexInit)(void);
  int (*xMutexEnd)(void);
  sqlite3_mutex *(*xMutexAlloc)(int);
  void (*xMutexFree)(sqlite3_mutex *);
  void (*xMutexEnter)(sqlite3_mutex *);
  int (*xMutexTry)(sqlite3_mutex *);
  void (*xMutexLeave)(sqlite3_mutex *);
  int (*xMutexHeld)(sqlite3_mutex *);
  int (*xMutexNotheld)(sqlite3_mutex *);
};

/*
** CAPI3REF: Mutex Verification Routines
**
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines
** are intended for use inside assert() statements.  ^The SQLite core
** never uses these routines except inside an assert() and applications
** are advised to follow the lead of the core.  ^The SQLite core only
** provides implementations for these routines when it is compiled
** with the SQLITE_DEBUG flag.  ^External mutex implementations
** are only required to provide these routines if SQLITE_DEBUG is
** defined and if NDEBUG is not defined.
**
** ^These routines should return true if the mutex in their argument
** is held or not held, respectively, by the calling thread.
**
** ^The implementation is not required to provided versions of these
** routines that actually work. If the implementation does not provide working
** versions of these routines, it should at least provide stubs that always
** return true so that one does not get spurious assertion failures.
**
** ^If the argument to sqlite3_mutex_held() is a NULL pointer then
** the routine should return 1.   This seems counter-intuitive since
** clearly the mutex cannot be held if it does not exist.  But the
** the reason the mutex does not exist is because the build is not
** using mutexes.  And we do not want the assert() containing the
** call to sqlite3_mutex_held() to fail, so a non-zero return is
** the appropriate thing to do.  ^The sqlite3_mutex_notheld()
** interface should also return 1 when given a NULL pointer.
*/
#ifndef NDEBUG
SQLITE_API int sqlite3_mutex_held(sqlite3_mutex*);
SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*);
#endif

/*
** CAPI3REF: Mutex Types
**
** The [sqlite3_mutex_alloc()] interface takes a single argument
** which is one of these integer constants.
**
** The set of static mutexes may change from one SQLite release to the
** next.  Applications that override the built-in mutex logic must be
** prepared to accommodate additional static mutexes.
*/
#define SQLITE_MUTEX_FAST             0
#define SQLITE_MUTEX_RECURSIVE        1
#define SQLITE_MUTEX_STATIC_MASTER    2
#define SQLITE_MUTEX_STATIC_MEM       3  /* sqlite3_malloc() */
#define SQLITE_MUTEX_STATIC_MEM2      4  /* NOT USED */
#define SQLITE_MUTEX_STATIC_OPEN      4  /* sqlite3BtreeOpen() */
#define SQLITE_MUTEX_STATIC_PRNG      5  /* sqlite3_random() */
#define SQLITE_MUTEX_STATIC_LRU       6  /* lru page list */
#define SQLITE_MUTEX_STATIC_LRU2      7  /* lru page list */

/*
** CAPI3REF: Retrieve the mutex for a database connection
**
** ^This interface returns a pointer the [sqlite3_mutex] object that 
** serializes access to the [database connection] given in the argument
** when the [threading mode] is Serialized.
** ^If the [threading mode] is Single-thread or Multi-thread then this
** routine returns a NULL pointer.
*/
SQLITE_API sqlite3_mutex *sqlite3_db_mutex(sqlite3*);

/*
** CAPI3REF: Low-Level Control Of Database Files
**
** ^The [sqlite3_file_control()] interface makes a direct call to the
** xFileControl method for the [sqlite3_io_methods] object associated
** with a particular database identified by the second argument. ^The
** name of the database "main" for the main database or "temp" for the
** TEMP database, or the name that appears after the AS keyword for
** databases that are added using the [ATTACH] SQL command.
** ^A NULL pointer can be used in place of "main" to refer to the
** main database file.
** ^The third and fourth parameters to this routine
** are passed directly through to the second and third parameters of
** the xFileControl method.  ^The return value of the xFileControl
** method becomes the return value of this routine.
**
** ^If the second parameter (zDbName) does not match the name of any
** open database file, then SQLITE_ERROR is returned.  ^This error
** code is not remembered and will not be recalled by [sqlite3_errcode()]
** or [sqlite3_errmsg()].  The underlying xFileControl method might
** also return SQLITE_ERROR.  There is no way to distinguish between
** an incorrect zDbName and an SQLITE_ERROR return from the underlying
** xFileControl method.
**
** See also: [SQLITE_FCNTL_LOCKSTATE]
*/
SQLITE_API int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);

/*
** CAPI3REF: Testing Interface
**
** ^The sqlite3_test_control() interface is used to read out internal
** state of SQLite and to inject faults into SQLite for testing
** purposes.  ^The first parameter is an operation code that determines
** the number, meaning, and operation of all subsequent parameters.
**
** This interface is not for use by applications.  It exists solely
** for verifying the correct operation of the SQLite library.  Depending
** on how the SQLite library is compiled, this interface might not exist.
**
** The details of the operation codes, their meanings, the parameters
** they take, and what they do are all subject to change without notice.
** Unlike most of the SQLite API, this function is not guaranteed to
** operate consistently from one release to the next.
*/
SQLITE_API int sqlite3_test_control(int op, ...);

/*
** CAPI3REF: Testing Interface Operation Codes
**
** These constants are the valid operation code parameters used
** as the first argument to [sqlite3_test_control()].
**
** These parameters and their meanings are subject to change
** without notice.  These values are for testing purposes only.
** Applications should not use any of these parameters or the
** [sqlite3_test_control()] interface.
*/
#define SQLITE_TESTCTRL_FIRST                    5
#define SQLITE_TESTCTRL_PRNG_SAVE                5
#define SQLITE_TESTCTRL_PRNG_RESTORE             6
#define SQLITE_TESTCTRL_PRNG_RESET               7
#define SQLITE_TESTCTRL_BITVEC_TEST              8
#define SQLITE_TESTCTRL_FAULT_INSTALL            9
#define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS     10
#define SQLITE_TESTCTRL_PENDING_BYTE            11
#define SQLITE_TESTCTRL_ASSERT                  12
#define SQLITE_TESTCTRL_ALWAYS                  13
#define SQLITE_TESTCTRL_RESERVE                 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS           15
#define SQLITE_TESTCTRL_ISKEYWORD               16
#define SQLITE_TESTCTRL_LAST                    16

/*
** CAPI3REF: SQLite Runtime Status
**
** ^This interface is used to retrieve runtime status information
** about the preformance of SQLite, and optionally to reset various
** highwater marks.  ^The first argument is an integer code for
** the specific parameter to measure.  ^(Recognized integer codes
** are of the form [SQLITE_STATUS_MEMORY_USED | SQLITE_STATUS_...].)^
** ^The current value of the parameter is returned into *pCurrent.
** ^The highest recorded value is returned in *pHighwater.  ^If the
** resetFlag is true, then the highest record value is reset after
** *pHighwater is written.  ^(Some parameters do not record the highest
** value.  For those parameters
** nothing is written into *pHighwater and the resetFlag is ignored.)^
** ^(Other parameters record only the highwater mark and not the current
** value.  For these latter parameters nothing is written into *pCurrent.)^
**
** ^The sqlite3_db_status() routine returns SQLITE_OK on success and a
** non-zero [error code] on failure.
**
** This routine is threadsafe but is not atomic.  This routine can be
** called while other threads are running the same or different SQLite
** interfaces.  However the values returned in *pCurrent and
** *pHighwater reflect the status of SQLite at different points in time
** and it is possible that another thread might change the parameter
** in between the times when *pCurrent and *pHighwater are written.
**
** See also: [sqlite3_db_status()]
*/
SQLITE_API int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);


/*
** CAPI3REF: Status Parameters
**
** These integer constants designate various run-time status parameters
** that can be returned by [sqlite3_status()].
**
** <dl>
** ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
** <dd>This parameter is the current amount of memory checked out
** using [sqlite3_malloc()], either directly or indirectly.  The
** figure includes calls made to [sqlite3_malloc()] by the application
** and internal memory usage by the SQLite library.  Scratch memory
** controlled by [SQLITE_CONFIG_SCRATCH] and auxiliary page-cache
** memory controlled by [SQLITE_CONFIG_PAGECACHE] is not included in
** this parameter.  The amount returned is the sum of the allocation
** sizes as reported by the xSize method in [sqlite3_mem_methods].</dd>)^
**
** ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
** internal equivalents).  Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.  
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
** ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
** <dd>This parameter returns the number of pages used out of the
** [pagecache memory allocator] that was configured using 
** [SQLITE_CONFIG_PAGECACHE].  The
** value returned is in pages, not in bytes.</dd>)^
**
** ^(<dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of page cache
** allocation which could not be statisfied by the [SQLITE_CONFIG_PAGECACHE]
** buffer and where forced to overflow to [sqlite3_malloc()].  The
** returned value includes allocations that overflowed because they
** where too large (they were larger than the "sz" parameter to
** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because
** no space was left in the page cache.</dd>)^
**
** ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [pagecache memory allocator].  Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.  
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
** ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
** <dd>This parameter returns the number of allocations used out of the
** [scratch memory allocator] configured using
** [SQLITE_CONFIG_SCRATCH].  The value returned is in allocations, not
** in bytes.  Since a single thread may only have one scratch allocation
** outstanding at time, this parameter also reports the number of threads
** using scratch memory at the same time.</dd>)^
**
** ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
** <dd>This parameter returns the number of bytes of scratch memory
** allocation which could not be statisfied by the [SQLITE_CONFIG_SCRATCH]
** buffer and where forced to overflow to [sqlite3_malloc()].  The values
** returned include overflows because the requested allocation was too
** larger (that is, because the requested allocation was larger than the
** "sz" parameter to [SQLITE_CONFIG_SCRATCH]) and because no scratch buffer
** slots were available.
** </dd>)^
**
** ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
** <dd>This parameter records the largest memory allocation request
** handed to [scratch memory allocator].  Only the value returned in the
** *pHighwater parameter to [sqlite3_status()] is of interest.  
** The value written into the *pCurrent parameter is undefined.</dd>)^
**
** ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
** <dd>This parameter records the deepest parser stack.  It is only
** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].</dd>)^
** </dl>
**
** New status parameters may be added from time to time.
*/
#define SQLITE_STATUS_MEMORY_USED          0
#define SQLITE_STATUS_PAGECACHE_USED       1
#define SQLITE_STATUS_PAGECACHE_OVERFLOW   2
#define SQLITE_STATUS_SCRATCH_USED         3
#define SQLITE_STATUS_SCRATCH_OVERFLOW     4
#define SQLITE_STATUS_MALLOC_SIZE          5
#define SQLITE_STATUS_PARSER_STACK         6
#define SQLITE_STATUS_PAGECACHE_SIZE       7
#define SQLITE_STATUS_SCRATCH_SIZE         8

/*
** CAPI3REF: Database Connection Status
**
** ^This interface is used to retrieve runtime status information 
** about a single [database connection].  ^The first argument is the
** database connection object to be interrogated.  ^The second argument
** is an integer constant, taken from the set of
** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros, that
** determiness the parameter to interrogate.  The set of 
** [SQLITE_DBSTATUS_LOOKASIDE_USED | SQLITE_DBSTATUS_*] macros is likely
** to grow in future releases of SQLite.
**
** ^The current value of the requested parameter is written into *pCur
** and the highest instantaneous value is written into *pHiwtr.  ^If
** the resetFlg is true, then the highest instantaneous value is
** reset back down to the current value.
**
** See also: [sqlite3_status()] and [sqlite3_stmt_status()].
*/
SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg);

/*
** CAPI3REF: Status Parameters for database connections
**
** These constants are the available integer "verbs" that can be passed as
** the second argument to the [sqlite3_db_status()] interface.
**
** New verbs may be added in future releases of SQLite. Existing verbs
** might be discontinued. Applications should check the return code from
** [sqlite3_db_status()] to make sure that the call worked.
** The [sqlite3_db_status()] interface will return a non-zero error code
** if a discontinued or unsupported verb is invoked.
**
** <dl>
** ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
** <dd>This parameter returns the number of lookaside memory slots currently
** checked out.</dd>)^
**
** <dt>SQLITE_DBSTATUS_CACHE_USED</dt>
** <dd>^This parameter returns the approximate number of of bytes of heap
** memory used by all pager caches associated with the database connection.
** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
** checked out.</dd>)^
** </dl>
*/
#define SQLITE_DBSTATUS_LOOKASIDE_USED     0
#define SQLITE_DBSTATUS_CACHE_USED         1
#define SQLITE_DBSTATUS_MAX                1   /* Largest defined DBSTATUS */


/*
** CAPI3REF: Prepared Statement Status
**
** ^(Each prepared statement maintains various
** [SQLITE_STMTSTATUS_SORT | counters] that measure the number
** of times it has performed specific operations.)^  These counters can
** be used to monitor the performance characteristics of the prepared
** statements.  For example, if the number of table steps greatly exceeds
** the number of table searches or result rows, that would tend to indicate
** that the prepared statement is using a full table scan rather than
** an index.  
**
** ^(This interface is used to retrieve and reset counter values from
** a [prepared statement].  The first argument is the prepared statement
** object to be interrogated.  The second argument
** is an integer code for a specific [SQLITE_STMTSTATUS_SORT | counter]
** to be interrogated.)^
** ^The current value of the requested counter is returned.
** ^If the resetFlg is true, then the counter is reset to zero after this
** interface call returns.
**
** See also: [sqlite3_status()] and [sqlite3_db_status()].
*/
SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);

/*
** CAPI3REF: Status Parameters for prepared statements
**
** These preprocessor macros define integer codes that name counter
** values associated with the [sqlite3_stmt_status()] interface.
** The meanings of the various counters are as follows:
**
** <dl>
** <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
** <dd>^This is the number of times that SQLite has stepped forward in
** a table as part of a full table scan.  Large numbers for this counter
** may indicate opportunities for performance improvement through 
** careful use of indices.</dd>
**
** <dt>SQLITE_STMTSTATUS_SORT</dt>
** <dd>^This is the number of sort operations that have occurred.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance through careful use of indices.</dd>
**
** <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
** <dd>^This is the number of rows inserted into transient indices that
** were created automatically in order to help joins run faster.
** A non-zero value in this counter may indicate an opportunity to
** improvement performance by adding permanent indices that do not
** need to be reinitialized each time the statement is run.</dd>
**
** </dl>
*/
#define SQLITE_STMTSTATUS_FULLSCAN_STEP     1
#define SQLITE_STMTSTATUS_SORT              2
#define SQLITE_STMTSTATUS_AUTOINDEX         3

/*
** CAPI3REF: Custom Page Cache Object
**
** The sqlite3_pcache type is opaque.  It is implemented by
** the pluggable module.  The SQLite core has no knowledge of
** its size or internal structure and never deals with the
** sqlite3_pcache object except by holding and passing pointers
** to the object.
**
** See [sqlite3_pcache_methods] for additional information.
*/
typedef struct sqlite3_pcache sqlite3_pcache;

/*
** CAPI3REF: Application Defined Page Cache.
** KEYWORDS: {page cache}
**
** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE], ...) interface can
** register an alternative page cache implementation by passing in an 
** instance of the sqlite3_pcache_methods structure.)^ The majority of the 
** heap memory used by SQLite is used by the page cache to cache data read 
** from, or ready to be written to, the database file. By implementing a 
** custom page cache using this API, an application can control more 
** precisely the amount of memory consumed by SQLite, the way in which 
** that memory is allocated and released, and the policies used to 
** determine exactly which parts of a database file are cached and for 
** how long.
**
** ^(The contents of the sqlite3_pcache_methods structure are copied to an
** internal buffer by SQLite within the call to [sqlite3_config].  Hence
** the application may discard the parameter after the call to
** [sqlite3_config()] returns.)^
**
** ^The xInit() method is called once for each call to [sqlite3_initialize()]
** (usually only once during the lifetime of the process). ^(The xInit()
** method is passed a copy of the sqlite3_pcache_methods.pArg value.)^
** ^The xInit() method can set up up global structures and/or any mutexes
** required by the custom page cache implementation. 
**
** ^The xShutdown() method is called from within [sqlite3_shutdown()], 
** if the application invokes this API. It can be used to clean up 
** any outstanding resources before process shutdown, if required.
**
** ^SQLite holds a [SQLITE_MUTEX_RECURSIVE] mutex when it invokes
** the xInit method, so the xInit method need not be threadsafe.  ^The
** xShutdown method is only called from [sqlite3_shutdown()] so it does
** not need to be threadsafe either.  All other methods must be threadsafe
** in multithreaded applications.
**
** ^SQLite will never invoke xInit() more than once without an intervening
** call to xShutdown().
**
** ^The xCreate() method is used to construct a new cache instance.  SQLite
** will typically create one cache instance for each open database file,
** though this is not guaranteed. ^The
** first parameter, szPage, is the size in bytes of the pages that must
** be allocated by the cache.  ^szPage will not be a power of two.  ^szPage
** will the page size of the database file that is to be cached plus an
** increment (here called "R") of about 100 or 200.  ^SQLite will use the
** extra R bytes on each page to store metadata about the underlying
** database page on disk.  The value of R depends
** on the SQLite version, the target platform, and how SQLite was compiled.
** ^R is constant for a particular build of SQLite.  ^The second argument to
** xCreate(), bPurgeable, is true if the cache being created will
** be used to cache database pages of a file stored on disk, or
** false if it is used for an in-memory database. ^The cache implementation
** does not have to do anything special based with the value of bPurgeable;
** it is purely advisory.  ^On a cache where bPurgeable is false, SQLite will
** never invoke xUnpin() except to deliberately delete a page.
** ^In other words, a cache created with bPurgeable set to false will
** never contain any unpinned pages.
**
** ^(The xCachesize() method may be called at any time by SQLite to set the
** suggested maximum cache-size (number of pages stored by) the cache
** instance passed as the first argument. This is the value configured using
** the SQLite "[PRAGMA cache_size]" command.)^  ^As with the bPurgeable
** parameter, the implementation is not required to do anything with this
** value; it is advisory only.
**
** ^The xPagecount() method should return the number of pages currently
** stored in the cache.
** 
** ^The xFetch() method is used to fetch a page and return a pointer to it. 
** ^A 'page', in this context, is a buffer of szPage bytes aligned at an
** 8-byte boundary. ^The page to be fetched is determined by the key. ^The
** mimimum key value is 1. After it has been retrieved using xFetch, the page 
** is considered to be "pinned".
**
** ^If the requested page is already in the page cache, then the page cache
** implementation must return a pointer to the page buffer with its content
** intact.  ^(If the requested page is not already in the cache, then the
** behavior of the cache implementation is determined by the value of the
** createFlag parameter passed to xFetch, according to the following table:
**
** <table border=1 width=85% align=center>
** <tr><th> createFlag <th> Behaviour when page is not already in cache
** <tr><td> 0 <td> Do not allocate a new page.  Return NULL.
** <tr><td> 1 <td> Allocate a new page if it easy and convenient to do so.
**                 Otherwise return NULL.
** <tr><td> 2 <td> Make every effort to allocate a new page.  Only return
**                 NULL if allocating a new page is effectively impossible.
** </table>)^
**
** SQLite will normally invoke xFetch() with a createFlag of 0 or 1.  If
** a call to xFetch() with createFlag==1 returns NULL, then SQLite will
** attempt to unpin one or more cache pages by spilling the content of
** pinned pages to disk and synching the operating system disk cache. After
** attempting to unpin pages, the xFetch() method will be invoked again with
** a createFlag of 2.
**
** ^xUnpin() is called by SQLite with a pointer to a currently pinned page
** as its second argument. ^(If the third parameter, discard, is non-zero,
** then the page should be evicted from the cache. In this case SQLite 
** assumes that the next time the page is retrieved from the cache using
** the xFetch() method, it will be zeroed.)^ ^If the discard parameter is
** zero, then the page is considered to be unpinned. ^The cache implementation
** may choose to evict unpinned pages at any time.
**
** ^(The cache is not required to perform any reference counting. A single 
** call to xUnpin() unpins the page regardless of the number of prior calls 
** to xFetch().)^
**
** ^The xRekey() method is used to change the key value associated with the
** page passed as the second argument from oldKey to newKey. ^If the cache
** previously contains an entry associated with newKey, it should be
** discarded. ^Any prior cache entry associated with newKey is guaranteed not
** to be pinned.
**
** ^When SQLite calls the xTruncate() method, the cache must discard all
** existing cache entries with page numbers (keys) greater than or equal
** to the value of the iLimit parameter passed to xTruncate(). ^If any
** of these pages are pinned, they are implicitly unpinned, meaning that
** they can be safely discarded.
**
** ^The xDestroy() method is used to delete a cache allocated by xCreate().
** All resources associated with the specified cache should be freed. ^After
** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*]
** handle invalid, and will not use it with any other sqlite3_pcache_methods
** functions.
*/
typedef struct sqlite3_pcache_methods sqlite3_pcache_methods;
struct sqlite3_pcache_methods {
  void *pArg;
  int (*xInit)(void*);
  void (*xShutdown)(void*);
  sqlite3_pcache *(*xCreate)(int szPage, int bPurgeable);
  void (*xCachesize)(sqlite3_pcache*, int nCachesize);
  int (*xPagecount)(sqlite3_pcache*);
  void *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag);
  void (*xUnpin)(sqlite3_pcache*, void*, int discard);
  void (*xRekey)(sqlite3_pcache*, void*, unsigned oldKey, unsigned newKey);
  void (*xTruncate)(sqlite3_pcache*, unsigned iLimit);
  void (*xDestroy)(sqlite3_pcache*);
};

/*
** CAPI3REF: Online Backup Object
**
** The sqlite3_backup object records state information about an ongoing
** online backup operation.  ^The sqlite3_backup object is created by
** a call to [sqlite3_backup_init()] and is destroyed by a call to
** [sqlite3_backup_finish()].
**
** See Also: [Using the SQLite Online Backup API]
*/
typedef struct sqlite3_backup sqlite3_backup;

/*
** CAPI3REF: Online Backup API.
**
** The backup API copies the content of one database into another.
** It is useful either for creating backups of databases or
** for copying in-memory databases to or from persistent files. 
**
** See Also: [Using the SQLite Online Backup API]
**
** ^Exclusive access is required to the destination database for the 
** duration of the operation. ^However the source database is only
** read-locked while it is actually being read; it is not locked
** continuously for the entire backup operation. ^Thus, the backup may be
** performed on a live source database without preventing other users from
** reading or writing to the source database while the backup is underway.
** 
** ^(To perform a backup operation: 
**   <ol>
**     <li><b>sqlite3_backup_init()</b> is called once to initialize the
**         backup, 
**     <li><b>sqlite3_backup_step()</b> is called one or more times to transfer 
**         the data between the two databases, and finally
**     <li><b>sqlite3_backup_finish()</b> is called to release all resources 
**         associated with the backup operation. 
**   </ol>)^
** There should be exactly one call to sqlite3_backup_finish() for each
** successful call to sqlite3_backup_init().
**
** <b>sqlite3_backup_init()</b>
**
** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the 
** [database connection] associated with the destination database 
** and the database name, respectively.
** ^The database name is "main" for the main database, "temp" for the
** temporary database, or the name specified after the AS keyword in
** an [ATTACH] statement for an attached database.
** ^The S and M arguments passed to 
** sqlite3_backup_init(D,N,S,M) identify the [database connection]
** and database name of the source database, respectively.
** ^The source and destination [database connections] (parameters S and D)
** must be different or else sqlite3_backup_init(D,N,S,M) will file with
** an error.
**
** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
** returned and an error code and error message are store3d in the
** destination [database connection] D.
** ^The error code and message for the failed call to sqlite3_backup_init()
** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or
** [sqlite3_errmsg16()] functions.
** ^A successful call to sqlite3_backup_init() returns a pointer to an
** [sqlite3_backup] object.
** ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and
** sqlite3_backup_finish() functions to perform the specified backup 
** operation.
**
** <b>sqlite3_backup_step()</b>
**
** ^Function sqlite3_backup_step(B,N) will copy up to N pages between 
** the source and destination databases specified by [sqlite3_backup] object B.
** ^If N is negative, all remaining source pages are copied. 
** ^If sqlite3_backup_step(B,N) successfully copies N pages and there
** are still more pages to be copied, then the function resturns [SQLITE_OK].
** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
** from source to destination, then it returns [SQLITE_DONE].
** ^If an error occurs while running sqlite3_backup_step(B,N),
** then an [error code] is returned. ^As well as [SQLITE_OK] and
** [SQLITE_DONE], a call to sqlite3_backup_step() may return [SQLITE_READONLY],
** [SQLITE_NOMEM], [SQLITE_BUSY], [SQLITE_LOCKED], or an
** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX] extended error code.
**
** ^The sqlite3_backup_step() might return [SQLITE_READONLY] if the destination
** database was opened read-only or if
** the destination is an in-memory database with a different page size
** from the source database.
**
** ^If sqlite3_backup_step() cannot obtain a required file-system lock, then
** the [sqlite3_busy_handler | busy-handler function]
** is invoked (if one is specified). ^If the 
** busy-handler returns non-zero before the lock is available, then 
** [SQLITE_BUSY] is returned to the caller. ^In this case the call to
** sqlite3_backup_step() can be retried later. ^If the source
** [database connection]
** is being used to write to the source database when sqlite3_backup_step()
** is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this
** case the call to sqlite3_backup_step() can be retried later on. ^(If
** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or
** [SQLITE_READONLY] is returned, then 
** there is no point in retrying the call to sqlite3_backup_step(). These 
** errors are considered fatal.)^  The application must accept 
** that the backup operation has failed and pass the backup operation handle 
** to the sqlite3_backup_finish() to release associated resources.
**
** ^The first call to sqlite3_backup_step() obtains an exclusive lock
** on the destination file. ^The exclusive lock is not released until either 
** sqlite3_backup_finish() is called or the backup operation is complete 
** and sqlite3_backup_step() returns [SQLITE_DONE].  ^Every call to
** sqlite3_backup_step() obtains a [shared lock] on the source database that
** lasts for the duration of the sqlite3_backup_step() call.
** ^Because the source database is not locked between calls to
** sqlite3_backup_step(), the source database may be modified mid-way
** through the backup process.  ^If the source database is modified by an
** external process or via a database connection other than the one being
** used by the backup operation, then the backup will be automatically
** restarted by the next call to sqlite3_backup_step(). ^If the source 
** database is modified by the using the same database connection as is used
** by the backup operation, then the backup database is automatically
** updated at the same time.
**
** <b>sqlite3_backup_finish()</b>
**
** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the 
** application wishes to abandon the backup operation, the application
** should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish().
** ^The sqlite3_backup_finish() interfaces releases all
** resources associated with the [sqlite3_backup] object. 
** ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any
** active write-transaction on the destination database is rolled back.
** The [sqlite3_backup] object is invalid
** and may not be used following a call to sqlite3_backup_finish().
**
** ^The value returned by sqlite3_backup_finish is [SQLITE_OK] if no
** sqlite3_backup_step() errors occurred, regardless or whether or not
** sqlite3_backup_step() completed.
** ^If an out-of-memory condition or IO error occurred during any prior
** sqlite3_backup_step() call on the same [sqlite3_backup] object, then
** sqlite3_backup_finish() returns the corresponding [error code].
**
** ^A return of [SQLITE_BUSY] or [SQLITE_LOCKED] from sqlite3_backup_step()
** is not a permanent error and does not affect the return value of
** sqlite3_backup_finish().
**
** <b>sqlite3_backup_remaining(), sqlite3_backup_pagecount()</b>
**
** ^Each call to sqlite3_backup_step() sets two values inside
** the [sqlite3_backup] object: the number of pages still to be backed
** up and the total number of pages in the source databae file.
** The sqlite3_backup_remaining() and sqlite3_backup_pagecount() interfaces
** retrieve these two values, respectively.
**
** ^The values returned by these functions are only updated by
** sqlite3_backup_step(). ^If the source database is modified during a backup
** operation, then the values are not updated to account for any extra
** pages that need to be updated or the size of the source database file
** changing.
**
** <b>Concurrent Usage of Database Handles</b>
**
** ^The source [database connection] may be used by the application for other
** purposes while a backup operation is underway or being initialized.
** ^If SQLite is compiled and configured to support threadsafe database
** connections, then the source database connection may be used concurrently
** from within other threads.
**
** However, the application must guarantee that the destination 
** [database connection] is not passed to any other API (by any thread) after 
** sqlite3_backup_init() is called and before the corresponding call to
** sqlite3_backup_finish().  SQLite does not currently check to see
** if the application incorrectly accesses the destination [database connection]
** and so no error code is reported, but the operations may malfunction
** nevertheless.  Use of the destination database connection while a
** backup is in progress might also also cause a mutex deadlock.
**
** If running in [shared cache mode], the application must
** guarantee that the shared cache used by the destination database
** is not accessed while the backup is running. In practice this means
** that the application must guarantee that the disk file being 
** backed up to is not accessed by any connection within the process,
** not just the specific connection that was passed to sqlite3_backup_init().
**
** The [sqlite3_backup] object itself is partially threadsafe. Multiple 
** threads may safely make multiple concurrent calls to sqlite3_backup_step().
** However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount()
** APIs are not strictly speaking threadsafe. If they are invoked at the
** same time as another thread is invoking sqlite3_backup_step() it is
** possible that they return invalid values.
*/
SQLITE_API sqlite3_backup *sqlite3_backup_init(
  sqlite3 *pDest,                        /* Destination database handle */
  const char *zDestName,                 /* Destination database name */
  sqlite3 *pSource,                      /* Source database handle */
  const char *zSourceName                /* Source database name */
);
SQLITE_API int sqlite3_backup_step(sqlite3_backup *p, int nPage);
SQLITE_API int sqlite3_backup_finish(sqlite3_backup *p);
SQLITE_API int sqlite3_backup_remaining(sqlite3_backup *p);
SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);

/*
** CAPI3REF: Unlock Notification
**
** ^When running in shared-cache mode, a database operation may fail with
** an [SQLITE_LOCKED] error if the required locks on the shared-cache or
** individual tables within the shared-cache cannot be obtained. See
** [SQLite Shared-Cache Mode] for a description of shared-cache locking. 
** ^This API may be used to register a callback that SQLite will invoke 
** when the connection currently holding the required lock relinquishes it.
** ^This API is only available if the library was compiled with the
** [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined.
**
** See Also: [Using the SQLite Unlock Notification Feature].
**
** ^Shared-cache locks are released when a database connection concludes
** its current transaction, either by committing it or rolling it back. 
**
** ^When a connection (known as the blocked connection) fails to obtain a
** shared-cache lock and SQLITE_LOCKED is returned to the caller, the
** identity of the database connection (the blocking connection) that
** has locked the required resource is stored internally. ^After an 
** application receives an SQLITE_LOCKED error, it may call the
** sqlite3_unlock_notify() method with the blocked connection handle as 
** the first argument to register for a callback that will be invoked
** when the blocking connections current transaction is concluded. ^The
** callback is invoked from within the [sqlite3_step] or [sqlite3_close]
** call that concludes the blocking connections transaction.
**
** ^(If sqlite3_unlock_notify() is called in a multi-threaded application,
** there is a chance that the blocking connection will have already
** concluded its transaction by the time sqlite3_unlock_notify() is invoked.
** If this happens, then the specified callback is invoked immediately,
** from within the call to sqlite3_unlock_notify().)^
**
** ^If the blocked connection is attempting to obtain a write-lock on a
** shared-cache table, and more than one other connection currently holds
** a read-lock on the same table, then SQLite arbitrarily selects one of 
** the other connections to use as the blocking connection.
**
** ^(There may be at most one unlock-notify callback registered by a 
** blocked connection. If sqlite3_unlock_notify() is called when the
** blocked connection already has a registered unlock-notify callback,
** then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is
** called with a NULL pointer as its second argument, then any existing
** unlock-notify callback is cancelled. ^The blocked connections 
** unlock-notify callback may also be canceled by closing the blocked
** connection using [sqlite3_close()].
**
** The unlock-notify callback is not reentrant. If an application invokes
** any sqlite3_xxx API functions from within an unlock-notify callback, a
** crash or deadlock may be the result.
**
** ^Unless deadlock is detected (see below), sqlite3_unlock_notify() always
** returns SQLITE_OK.
**
** <b>Callback Invocation Details</b>
**
** When an unlock-notify callback is registered, the application provides a 
** single void* pointer that is passed to the callback when it is invoked.
** However, the signature of the callback function allows SQLite to pass
** it an array of void* context pointers. The first argument passed to
** an unlock-notify callback is a pointer to an array of void* pointers,
** and the second is the number of entries in the array.
**
** When a blocking connections transaction is concluded, there may be
** more than one blocked connection that has registered for an unlock-notify
** callback. ^If two or more such blocked connections have specified the
** same callback function, then instead of invoking the callback function
** multiple times, it is invoked once with the set of void* context pointers
** specified by the blocked connections bundled together into an array.
** This gives the application an opportunity to prioritize any actions 
** related to the set of unblocked database connections.
**
** <b>Deadlock Detection</b>
**
** Assuming that after registering for an unlock-notify callback a 
** database waits for the callback to be issued before taking any further
** action (a reasonable assumption), then using this API may cause the
** application to deadlock. For example, if connection X is waiting for
** connection Y's transaction to be concluded, and similarly connection
** Y is waiting on connection X's transaction, then neither connection
** will proceed and the system may remain deadlocked indefinitely.
**
** To avoid this scenario, the sqlite3_unlock_notify() performs deadlock
** detection. ^If a given call to sqlite3_unlock_notify() would put the
** system in a deadlocked state, then SQLITE_LOCKED is returned and no
** unlock-notify callback is registered. The system is said to be in
** a deadlocked state if connection A has registered for an unlock-notify
** callback on the conclusion of connection B's transaction, and connection
** B has itself registered for an unlock-notify callback when connection
** A's transaction is concluded. ^Indirect deadlock is also detected, so
** the system is also considered to be deadlocked if connection B has
** registered for an unlock-notify callback on the conclusion of connection
** C's transaction, where connection C is waiting on connection A. ^Any
** number of levels of indirection are allowed.
**
** <b>The "DROP TABLE" Exception</b>
**
** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost 
** always appropriate to call sqlite3_unlock_notify(). There is however,
** one exception. When executing a "DROP TABLE" or "DROP INDEX" statement,
** SQLite checks if there are any currently executing SELECT statements
** that belong to the same connection. If there are, SQLITE_LOCKED is
** returned. In this case there is no "blocking connection", so invoking
** sqlite3_unlock_notify() results in the unlock-notify callback being
** invoked immediately. If the application then re-attempts the "DROP TABLE"
** or "DROP INDEX" query, an infinite loop might be the result.
**
** One way around this problem is to check the extended error code returned
** by an sqlite3_step() call. ^(If there is a blocking connection, then the
** extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in
** the special "DROP TABLE/INDEX" case, the extended error code is just 
** SQLITE_LOCKED.)^
*/
SQLITE_API int sqlite3_unlock_notify(
  sqlite3 *pBlocked,                          /* Waiting connection */
  void (*xNotify)(void **apArg, int nArg),    /* Callback function to invoke */
  void *pNotifyArg                            /* Argument to pass to xNotify */
);


/*
** CAPI3REF: String Comparison
**
** ^The [sqlite3_strnicmp()] API allows applications and extensions to
** compare the contents of two buffers containing UTF-8 strings in a
** case-indendent fashion, using the same definition of case independence 
** that SQLite uses internally when comparing identifiers.
*/
SQLITE_API int sqlite3_strnicmp(const char *, const char *, int);

/*
** CAPI3REF: Error Logging Interface
**
** ^The [sqlite3_log()] interface writes a message into the error log
** established by the [SQLITE_CONFIG_LOG] option to [sqlite3_config()].
** ^If logging is enabled, the zFormat string and subsequent arguments are
** used with [sqlite3_snprintf()] to generate the final output string.
**
** The sqlite3_log() interface is intended for use by extensions such as
** virtual tables, collating functions, and SQL functions.  While there is
** nothing to prevent an application from calling sqlite3_log(), doing so
** is considered bad form.
**
** The zFormat string must not be NULL.
**
** To avoid deadlocks and other threading problems, the sqlite3_log() routine
** will not use dynamically allocated memory.  The log message is stored in
** a fixed-length buffer on the stack.  If the log message is longer than
** a few hundred characters, it will be truncated to the length of the
** buffer.
*/
SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...);

/*
** Undo the hack that converts floating point types to integer for
** builds on processors without floating point support.
*/
#ifdef SQLITE_OMIT_FLOATING_POINT
# undef double
#endif

#ifdef __cplusplus
}  /* End of the 'extern "C"' block */
#endif
#endif

Added src/stash.c.












































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2010 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@sqlite.org
**
*******************************************************************************
**
** This file contains code used to implement the "stash" command.
*/
#include "config.h"
#include "stash.h"
#include <assert.h>


/*
** SQL code to implement the tables needed by the stash.
**
** Historical schema changes:
**
**   2019-01-19:   stash.hash and stashfile.hash columns added.  The
**                 corresponding stash.vid and stashfile.rid columns are
**                 retained for compatibility with older versions of
**                 fossil but are no longer used.
**
**   2016-10-16:   Change the PRIMARY KEY on stashfile from (origname,stashid)
**                 to (newname,stashid).
**
**   2011-09-01:   stashfile.isLink column added
**
*/
static const char zStashInit[] =
@ CREATE TABLE IF NOT EXISTS localdb.stash(
@   stashid INTEGER PRIMARY KEY,     -- Unique stash identifier
@   vid INTEGER,                     -- Legacy baseline RID value. Do not use.
@   hash TEXT,                       -- The SHA hash for the baseline
@   comment TEXT,                    -- Comment for this stash.  Or NULL
@   ctime TIMESTAMP                  -- When the stash was created
@ );
@ CREATE TABLE IF NOT EXISTS localdb.stashfile(
@   stashid INTEGER REFERENCES stash,  -- Stash that contains this file
@   isAdded BOOLEAN,                   -- True if this is an added file
@   isRemoved BOOLEAN,                 -- True if this file is deleted
@   isExec BOOLEAN,                    -- True if file is executable
@   isLink BOOLEAN,                    -- True if file is a symlink
@   rid INTEGER,                       -- Legacy baseline RID value. Do not use
@   hash TEXT,                         -- Hash for baseline or NULL
@   origname TEXT,                     -- Original filename
@   newname TEXT,                      -- New name for file at next check-in
@   delta BLOB,                        -- Delta from baseline or raw content
@   PRIMARY KEY(newname, stashid)
@ );
@ INSERT OR IGNORE INTO vvar(name, value) VALUES('stash-next', 1);
;

/*
** Make sure the stash and stashfile tables exist and have been
** upgraded to their latest format.  Create and upgrade the tables
** as necessary.
*/
static void stash_tables_exist_and_current(void){
  if( db_table_has_column("localdb","stashfile","hash") ){
    /* The schema is up-to-date.  But it could be that an older version
    ** of Fossil that does no know about the stash.hash and stashfile.hash
    ** columns has run since the schema was updated, and added entries that
    ** have NULL hash columns.  Check for this case, and fill in any missing
    ** hash values.
    */
    if( db_int(0, "SELECT hash IS NULL FROM stash"
                  " ORDER BY stashid DESC LIMIT 1")
    ){
      db_multi_exec(
        "UPDATE stash"
        "   SET hash=(SELECT uuid FROM blob WHERE blob.rid=stash.vid)"
        " WHERE hash IS NULL;"
        "UPDATE stashfile"
        "   SET hash=(SELECT uuid FROM blob WHERE blob.rid=stashfile.rid)"
        " WHERE hash IS NULL AND rid>0;"
      );
    }
    return;
  }

  if( !db_table_exists("localdb","stashfile")
   || !db_table_exists("localdb","stash")
  ){
    /* Tables do not exist.  Create them from scratch. */
    db_multi_exec("DROP TABLE IF EXISTS localdb.stash;");
    db_multi_exec("DROP TABLE IF EXISTS localdb.stashfile;");
    db_multi_exec(zStashInit /*works-like:""*/);
    return;
  }

  /* The tables exists but are not necessarily current.  Upgrade them
  ** to the latest format.
  **
  ** We can assume the 2011-09-01 format that includes the stashfile.isLink
  ** column.  The only upgrades we need to worry about the PRIMARY KEY
  ** change on 2016-10-16 and the addition of the "hash" columns on
  ** 2019-01-19.
  */
  db_multi_exec(
    "ALTER TABLE localdb.stash RENAME TO old_stash;"
    "ALTER TABLE localdb.stashfile RENAME TO old_stashfile;"
  );
  db_multi_exec(zStashInit /*works-like:""*/);
  db_multi_exec(
    "INSERT INTO localdb.stash(stashid,vid,hash,comment,ctime)"
    " SELECT stashid, vid,"
    "   (SELECT uuid FROM blob WHERE blob.rid=old_stash.vid),"
    "   comment, ctime FROM old_stash;"
    "DROP TABLE old_stash;"
  );
  db_multi_exec(
    "INSERT INTO localdb.stashfile(stashid,isAdded,isRemoved,isExec,"
                                  "isLink,rid,hash,origname,newname,delta)"
    " SELECT stashid, isAdded, isRemoved, isExec, isLink, rid,"
    "   (SELECT uuid FROM blob WHERE blob.rid=old_stashfile.rid),"
    "   origname, newname, delta FROM old_stashfile;"
    "DROP TABLE old_stashfile;"
  );
}

/*
** Update the stash.vid and stashfile.rid values after a RID renumbering
** event.
*/
void stash_rid_renumbering_event(void){
  if( !db_table_has_column("localdb","stash","hash") ){
    /* If the stash schema was the older style that lacked hash value, then
    ** recovery is not possible.  Save off the old data, then reset the stash
    ** to empty. */
    if( db_table_exists("localdb","stash") ){
      db_multi_exec("ALTER TABLE stash RENAME TO broken_stash;");
      fossil_print("Unrecoverable stash content stored in \"broken_stash\"\n");
    }
    if( db_table_exists("localdb","stashfile") ){
      db_multi_exec("ALTER TABLE stashfile RENAME TO broken_stashfile;");
      fossil_print("Unrecoverable stashfile content stored"
                   " in \"broken_stashfile\"\n");
    }
  }else{
    /* Reset stash.vid and stash.rid values based on hashes */
    db_multi_exec(
      "UPDATE stash"
      "   SET vid=(SELECT rid FROM blob WHERE blob.uuid=stash.hash);"
      "UPDATE stashfile"
      "   SET rid=(SELECT rid FROM blob WHERE blob.uuid=stashfile.hash)"
      " WHERE hash IS NOT NULL;"
    );
  }
}

/*
** Add zFName to the stash given by stashid.  zFName might be the name of a
** file or a directory.  If a directory, add all changed files contained
** within that directory.
*/
static void stash_add_file_or_dir(int stashid, int vid, const char *zFName){
  char *zFile;          /* Normalized filename */
  char *zTreename;      /* Name of the file in the tree */
  Blob fname;           /* Filename relative to root */
  Blob sql;             /* Query statement text */
  Stmt q;               /* Query against the vfile table */
  Stmt ins;             /* Insert statement */

  zFile = mprintf("%/", zFName);
  file_tree_name(zFile, &fname, 0, 1);
  zTreename = blob_str(&fname);
  blob_zero(&sql);
  blob_append_sql(&sql,
    "SELECT deleted, isexe, islink, mrid, pathname, coalesce(origname,pathname)"
    "  FROM vfile"
    " WHERE vid=%d AND (chnged OR deleted OR origname NOT NULL OR mrid==0)",
    vid
  );
  if( fossil_strcmp(zTreename,".")!=0 ){
    blob_append_sql(&sql,
      "   AND (pathname GLOB '%q/*' OR origname GLOB '%q/*'"
            "  OR pathname=%Q OR origname=%Q)",
      zTreename, zTreename, zTreename, zTreename
    );
  }
  db_prepare(&q, "%s", blob_sql_text(&sql));
  blob_reset(&sql);
  db_prepare(&ins,
     "INSERT INTO stashfile(stashid, isAdded, isRemoved, isExec, isLink, rid, "
                           "hash, origname, newname, delta)"
     "VALUES(%d,:isadd,:isrm,:isexe,:islink,:rid,"
     "(SELECT uuid FROM blob WHERE rid=:rid),:orig,:new,:content)",
     stashid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int deleted = db_column_int(&q, 0);
    int rid = db_column_int(&q, 3);
    const char *zName = db_column_text(&q, 4);
    const char *zOrig = db_column_text(&q, 5);
    char *zPath = mprintf("%s%s", g.zLocalRoot, zName);
    Blob content;

    db_bind_int(&ins, ":rid", rid);
    db_bind_int(&ins, ":isadd", rid==0);
    db_bind_int(&ins, ":isrm", deleted);
    db_bind_int(&ins, ":isexe", db_column_int(&q, 1));
    db_bind_int(&ins, ":islink", db_column_int(&q, 2));
    db_bind_text(&ins, ":orig", zOrig);
    db_bind_text(&ins, ":new", zName);

    if( rid==0 ){
      /* A new file */
      blob_read_from_file(&content, zPath, RepoFILE);
      db_bind_blob(&ins, ":content", &content);
    }else if( deleted ){
      blob_zero(&content);
      db_bind_null(&ins, ":content");
    }else{
      /* A modified file */
      Blob orig;
      Blob disk;

      blob_read_from_file(&disk, zPath, RepoFILE);
      content_get(rid, &orig);
      blob_delta_create(&orig, &disk, &content);
      blob_reset(&orig);
      blob_reset(&disk);
      db_bind_blob(&ins, ":content", &content);
    }
    db_bind_int(&ins, ":islink", file_islink(zPath));
    db_step(&ins);
    db_reset(&ins);
    fossil_free(zPath);
    blob_reset(&content);
  }
  db_finalize(&ins);
  db_finalize(&q);
  fossil_free(zFile);
  blob_reset(&fname);
}

/*
** Create a new stash based on the uncommitted changes currently in
** the working directory.
**
** If the "-m" or "--comment" command-line option is present, gather
** its argument as the stash comment.
**
** If files are named on the command-line, then only stash the named
** files.
*/
static int stash_create(void){
  const char *zComment;              /* Comment to add to the stash */
  int stashid;                       /* ID of the new stash */
  int vid;                           /* Current check-out */

  zComment = find_option("comment", "m", 1);
  verify_all_options();
  if( zComment==0 ){
    Blob prompt;                       /* Prompt for stash comment */
    Blob comment;                      /* User comment reply */
#if defined(_WIN32) || defined(__CYGWIN__)
    int bomSize;
    const unsigned char *bom = get_utf8_bom(&bomSize);
    blob_init(&prompt, (const char *) bom, bomSize);
#else
    blob_zero(&prompt);
#endif
    blob_append(&prompt,
       "\n"
       "# Enter a description of what is being stashed.  Lines beginning\n"
       "# with \"#\" are ignored.  Stash comments are plain text except\n"
       "# newlines are not preserved.\n",
       -1);
    prompt_for_user_comment(&comment, &prompt);
    blob_reset(&prompt);
    zComment = blob_str(&comment);
  }
  stashid = db_lget_int("stash-next", 1);
  db_lset_int("stash-next", stashid+1);
  vid = db_lget_int("checkout", 0);
  vfile_check_signature(vid, 0);
  db_multi_exec(
    "INSERT INTO stash(stashid,vid,hash,comment,ctime)"
    "VALUES(%d,%d,(SELECT uuid FROM blob WHERE rid=%d),%Q,julianday('now'))",
    stashid, vid, vid, zComment
  );
  if( g.argc>3 ){
    int i;
    for(i=3; i<g.argc; i++){
      stash_add_file_or_dir(stashid, vid, g.argv[i]);
    }
  }else{
    stash_add_file_or_dir(stashid, vid, g.zLocalRoot);
  }
  return stashid;
}

/*
** Apply a stash to the current check-out.
*/
static void stash_apply(int stashid, int nConflict){
  int vid;
  Stmt q;
  db_prepare(&q,
     "SELECT blob.rid, isRemoved, isExec, isLink, origname, newname, delta"
     "  FROM stashfile, blob WHERE stashid=%d AND blob.uuid=stashfile.hash"
     " UNION ALL SELECT 0, isRemoved, isExec, isLink, origname, newname, delta"
     "  FROM stashfile WHERE stashid=%d AND stashfile.hash IS NULL",
     stashid, stashid
  );
  vid = db_lget_int("checkout",0);
  db_multi_exec("CREATE TEMP TABLE sfile(pathname TEXT PRIMARY KEY %s)",
                filename_collation());
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    int isRemoved = db_column_int(&q, 1);
    int isExec = db_column_int(&q, 2);
    int isLink = db_column_int(&q, 3);
    const char *zOrig = db_column_text(&q, 4);
    const char *zNew = db_column_text(&q, 5);
    char *zOPath = mprintf("%s%s", g.zLocalRoot, zOrig);
    char *zNPath = mprintf("%s%s", g.zLocalRoot, zNew);
    Blob delta;
    undo_save(zNew);
    blob_zero(&delta);
    if( rid==0 ){
      db_multi_exec("INSERT OR IGNORE INTO sfile(pathname) VALUES(%Q)", zNew);
      db_ephemeral_blob(&q, 6, &delta);
      blob_write_to_file(&delta, zNPath);
      file_setexe(zNPath, isExec);
    }else if( isRemoved ){
      fossil_print("DELETE %s\n", zOrig);
      file_delete(zOPath);
    }else if( file_unsafe_in_tree_path(zNPath) ){
      /* Ignore the unsafe path */
    }else{
      Blob a, b, out, disk;
      int isNewLink = file_islink(zOPath);
      db_ephemeral_blob(&q, 6, &delta);
      blob_read_from_file(&disk, zOPath, RepoFILE);
      content_get(rid, &a);
      blob_delta_apply(&a, &delta, &b);
      if( isLink == isNewLink && blob_compare(&disk, &a)==0 ){
        if( isLink || isNewLink ){
          file_delete(zNPath);
        }
        if( isLink ){
          symlink_create(blob_str(&b), zNPath);
        }else{
          blob_write_to_file(&b, zNPath);
        }
        file_setexe(zNPath, isExec);
        fossil_print("UPDATE %s\n", zNew);
      }else{
        int rc;
        if( isLink || isNewLink ){
          rc = -1;
          blob_zero(&b); /* because we reset it later */
          fossil_print("***** Cannot merge symlink %s\n", zNew);
        }else{
          rc = merge_3way(&a, zOPath, &b, &out, MERGE_KEEP_FILES);
          blob_write_to_file(&out, zNPath);
          blob_reset(&out);
          file_setexe(zNPath, isExec);
        }
        if( rc ){
          fossil_print("CONFLICT %s\n", zNew);
          nConflict++;
        }else{
          fossil_print("MERGE %s\n", zNew);
        }
      }
      blob_reset(&a);
      blob_reset(&b);
      blob_reset(&disk);
    }
    blob_reset(&delta);
    if( fossil_strcmp(zOrig,zNew)!=0 ){
      undo_save(zOrig);
      file_delete(zOPath);
      db_multi_exec(
        "UPDATE vfile SET pathname='%q', origname='%q'"
        " WHERE pathname='%q' %s AND vid=%d",
        zNew, zOrig, zOrig, filename_collation(), vid
      );
    }
  }
  stash_add_files_in_sfile(vid);
  db_finalize(&q);
  if( nConflict ){
    fossil_print(
      "WARNING: %d merge conflicts - see messages above for details.\n",
      nConflict);
  }
}

/*
** Show the diffs associate with a single stash.
*/
static void stash_diff(
  int stashid,             /* The stash entry to diff */
  int fBaseline,           /* Diff against original baseline check-in if true */
  DiffConfig *pCfg         /* Diff formatting options */
){
  Stmt q;
  Blob empty;
  int bWebpage = (pCfg->diffFlags & (DIFF_WEBPAGE|DIFF_JSON|DIFF_TCL))!=0;
  blob_zero(&empty);
  diff_begin(pCfg);
  db_prepare(&q,
     "SELECT blob.rid, isRemoved, isExec, isLink, origname, newname, delta"
     "  FROM stashfile, blob WHERE stashid=%d AND blob.uuid=stashfile.hash"
     " UNION ALL SELECT 0, isRemoved, isExec, isLink, origname, newname, delta"
     "  FROM stashfile WHERE stashid=%d AND stashfile.hash IS NULL",
     stashid, stashid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    int isRemoved = db_column_int(&q, 1);
    int isLink = db_column_int(&q, 3);
    const char *zOrig = db_column_text(&q, 4);
    const char *zNew = db_column_text(&q, 5);
    char *zOPath = mprintf("%s%s", g.zLocalRoot, zOrig);
    Blob a, b;
    pCfg->diffFlags &= (~DIFF_FILE_MASK);
    if( rid==0 ){
      db_ephemeral_blob(&q, 6, &a);
      if( !bWebpage ) fossil_print("ADDED %s\n", zNew);
      pCfg->diffFlags |= DIFF_FILE_ADDED;
      diff_print_index(zNew, pCfg, 0);
      diff_file_mem(&empty, &a, zNew, pCfg);
    }else if( isRemoved ){
      if( !bWebpage) fossil_print("DELETE %s\n", zOrig);
      pCfg->diffFlags |= DIFF_FILE_DELETED;
      diff_print_index(zNew, pCfg, 0);
      if( fBaseline ){
        content_get(rid, &a);
        diff_file_mem(&a, &empty, zOrig, pCfg);
      }
    }else{
      Blob delta;
      int isOrigLink = file_islink(zOPath);
      db_ephemeral_blob(&q, 6, &delta);
      if( !bWebpage ) fossil_print("CHANGED %s\n", zNew);
      if( !isOrigLink != !isLink ){
        diff_print_index(zNew, pCfg, 0);
        diff_print_filenames(zOrig, zNew, pCfg, 0);
        printf(DIFF_CANNOT_COMPUTE_SYMLINK);
      }else{
        content_get(rid, &a);
        blob_delta_apply(&a, &delta, &b);
        if( fBaseline ){
          diff_file_mem(&a, &b, zNew, pCfg);
        }else{
          pCfg->diffFlags ^= DIFF_INVERT;
          diff_file(&b, zOPath, zNew, pCfg, 0);
          pCfg->diffFlags ^= DIFF_INVERT;
        }
        blob_reset(&a);
        blob_reset(&b);
      }
      blob_reset(&delta);
    }
  }
  db_finalize(&q);
  diff_end(pCfg, 0);
}

/*
** Drop the indicated stash
*/
static void stash_drop(int stashid){
  db_multi_exec(
    "DELETE FROM stash WHERE stashid=%d;"
    "DELETE FROM stashfile WHERE stashid=%d;",
    stashid, stashid
  );
}

/*
** If zStashId is non-NULL then interpret is as a stash number and
** return that number.  Or throw a fatal error if it is not a valid
** stash number.  If it is NULL, return the most recent stash or
** throw an error if the stash is empty.
*/
static int stash_get_id(const char *zStashId){
  int stashid;
  if( zStashId==0 ){
    stashid = db_int(0, "SELECT max(stashid) FROM stash");
    if( stashid==0 ) fossil_fatal("empty stash");
  }else{
    stashid = atoi(zStashId);
    if( !db_exists("SELECT 1 FROM stash WHERE stashid=%d", stashid) ){
      fossil_fatal("no such stash: %s", zStashId);
    }
  }
  return stashid;
}

/*
** COMMAND: stash
**
** Usage: %fossil stash SUBCOMMAND ARGS...
**
** > fossil stash
** > fossil stash save ?-m|--comment COMMENT? ?FILES...?
** > fossil stash snapshot ?-m|--comment COMMENT? ?FILES...?
**
**      Save the current changes in the working tree as a new stash.
**      Then revert the changes back to the last check-in.  If FILES
**      are listed, then only stash and revert the named files.  The
**      "save" verb can be omitted if and only if there are no other
**      arguments.  The "snapshot" verb works the same as "save" but
**      omits the revert, keeping the check-out unchanged.
**
** > fossil stash list|ls ?-v|--verbose? ?-W|--width NUM?
**
**      List all changes sets currently stashed.  Show information about
**      individual files in each changeset if -v or --verbose is used.
**
** > fossil stash show|cat ?STASHID? ?DIFF-OPTIONS?
** > fossil stash gshow|gcat ?STASHID? ?DIFF-OPTIONS?
**
**      Show the contents of a stash as a diff against its baseline.
**      With gshow and gcat, gdiff-command is used instead of internal
**      diff logic.
**
** > fossil stash pop
** > fossil stash apply ?STASHID?
**
**      Apply STASHID or the most recently created stash to the current
**      working check-out.  The "pop" command deletes that changeset from
**      the stash after applying it but the "apply" command retains the
**      changeset.
**
** > fossil stash goto ?STASHID?
**
**      Update to the baseline check-out for STASHID then apply the
**      changes of STASHID.  Keep STASHID so that it can be reused
**      This command is undoable.
**
** > fossil stash drop|rm ?STASHID? ?-a|--all?
**
**      Forget everything about STASHID.  Forget the whole stash if the
**      -a|--all flag is used.  Individual drops are undoable but -a|--all
**      is not.
**
** > fossil stash diff ?STASHID? ?DIFF-OPTIONS?
** > fossil stash gdiff ?STASHID? ?DIFF-OPTIONS?
**
**      Show diffs of the current working directory and what that
**      directory would be if STASHID were applied. With gdiff,
**      gdiff-command is used instead of internal diff logic.
*/
void stash_cmd(void){
  const char *zCmd;
  int nCmd;
  int stashid = 0;
  undo_capture_command_line();
  db_must_be_within_tree();
  db_open_config(0, 0);
  db_begin_transaction();
  stash_tables_exist_and_current();
  if( g.argc<=2 ){
    zCmd = "save";
  }else{
    zCmd = g.argv[2];
  }
  nCmd = strlen(zCmd);
  if( strncmp(zCmd, "save", nCmd)==0 ){
    if( unsaved_changes(0)==0 ){
      fossil_fatal("nothing to stash");
    }
    stashid = stash_create();
    undo_disable();
    if( g.argc>=2 ){
      int nFile = db_int(0, "SELECT count(*) FROM stashfile WHERE stashid=%d",
                         stashid);
      char **newArgv;
      int i = 2;
      Stmt q;
      if( nFile==0 ){
        fossil_fatal("No modified files match the provided pattern.");
      }
      newArgv = fossil_malloc( sizeof(char*)*(nFile+2) );
      db_prepare(&q,"SELECT origname FROM stashfile WHERE stashid=%d", stashid);
      while( db_step(&q)==SQLITE_ROW ){
        newArgv[i++] = mprintf("%s%s", g.zLocalRoot, db_column_text(&q, 0));
      }
      db_finalize(&q);
      newArgv[0] = g.argv[0];
      newArgv[1] = 0;
      g.argv = newArgv;
      g.argc = nFile+2;
    }
    /* Make sure the stash has committed before running the revert, so that
    ** we have a copy of the changes before deleting them. */
    db_commit_transaction();
    g.argv[1] = "revert";
    revert_cmd();
    fossil_print("stash %d saved\n", stashid);
    return;
  }else
  if( strncmp(zCmd, "snapshot", nCmd)==0 ){
    stash_create();
  }else
  if( strncmp(zCmd, "list", nCmd)==0 || strncmp(zCmd, "ls", nCmd)==0 ){
    Stmt q, q2;
    int n = 0, width;
    int verboseFlag = find_option("verbose","v",0)!=0;
    const char *zWidth = find_option("width","W",1);

    if( zWidth ){
      width = atoi(zWidth);
      if( (width!=0) && (width<=46) ){
        fossil_fatal("-W|--width value must be >46 or 0");
      }
    }else{
      width = -1;
    }
    if( !verboseFlag ){
      verboseFlag = find_option("detail","l",0)!=0; /* deprecated */
    }
    verify_all_options();
    db_prepare(&q,
       "SELECT stashid, hash, comment, datetime(ctime) FROM stash"
       " ORDER BY ctime"
    );
    if( verboseFlag ){
      db_prepare(&q2, "SELECT isAdded, isRemoved, origname, newname"
                      "  FROM stashfile WHERE stashid=$id");
    }
    while( db_step(&q)==SQLITE_ROW ){
      int stashid = db_column_int(&q, 0);
      const char *zCom;
      n++;
      fossil_print("%5d: [%.14s] on %s\n",
        stashid,
        db_column_text(&q, 1),
        db_column_text(&q, 3)
      );
      zCom = db_column_text(&q, 2);
      if( zCom && zCom[0] ){
        fossil_print("       ");
        comment_print(zCom, 0, 7, width, get_comment_format());
      }
      if( verboseFlag ){
        db_bind_int(&q2, "$id", stashid);
        while( db_step(&q2)==SQLITE_ROW ){
          int isAdded = db_column_int(&q2, 0);
          int isRemoved = db_column_int(&q2, 1);
          const char *zOrig = db_column_text(&q2, 2);
          const char *zNew = db_column_text(&q2, 3);
          if( isAdded ){
             fossil_print("          ADD %s\n", zNew);
          }else if( isRemoved ){
             fossil_print("          REMOVE %s\n", zOrig);
          }else if( fossil_strcmp(zOrig,zNew)!=0 ){
             fossil_print("          RENAME %s -> %s\n", zOrig, zNew);
          }else{
             fossil_print("          EDIT %s\n", zOrig);
          }
        }
        db_reset(&q2);
      }
    }
    db_finalize(&q);
    if( verboseFlag ) db_finalize(&q2);
    if( n==0 ) fossil_print("empty stash\n");
  }else
  if( strncmp(zCmd, "drop", nCmd)==0 || strncmp(zCmd, "rm", nCmd)==0 ){
    int allFlag = find_option("all", "a", 0)!=0;
    if( allFlag ){
      Blob ans;
      char cReply;
      prompt_user("This action is not undoable.  Continue (y/N)? ", &ans);
      cReply = blob_str(&ans)[0];
      if( cReply=='y' || cReply=='Y' ){
        db_multi_exec("DELETE FROM stash; DELETE FROM stashfile;");
      }
    }else if( g.argc>=4 ){
      int i;
      undo_begin();
      for(i=3; i<g.argc; i++){
        stashid = stash_get_id(g.argv[i]);
        undo_save_stash(stashid);
        stash_drop(stashid);
      }
      undo_finish();
    }else{
      undo_begin();
      undo_save_stash(0);
      stash_drop(stashid);
      undo_finish();
    }
  }else
  if( strncmp(zCmd, "pop", nCmd)==0 ||  strncmp(zCmd, "apply", nCmd)==0 ){
    char *zCom = 0, *zDate = 0, *zHash = 0;
    int popped = *zCmd=='p';
    if( popped ){
      if( g.argc>3 ) usage("pop");
      stashid = stash_get_id(0);
    }else{
      if( g.argc>4 ) usage("apply STASHID");
      stashid = stash_get_id(g.argc==4 ? g.argv[3] : 0);
    }
    zCom = db_text(0, "SELECT comment FROM stash WHERE stashid=%d", stashid);
    zDate = db_text(0, "SELECT datetime(ctime) FROM stash WHERE stashid=%d",
        stashid);
    zHash = db_text(0, "SELECT hash FROM stash WHERE stashid=%d", stashid);
    undo_begin();
    stash_apply(stashid, 0);
    if( popped ) undo_save_stash(stashid);
    fossil_print("%s stash:\n%5d: [%.14s] from %s\n",
        popped ? "Popped" : "Applied", stashid, zHash, zDate);
    if( zCom && *zCom ){
      fossil_print("       ");
      comment_print(zCom, 0, 7, -1, get_comment_format());
    }
    fossil_free(zCom);
    fossil_free(zDate);
    fossil_free(zHash);
    undo_finish();
    if( popped ) stash_drop(stashid);
  }else
  if( strncmp(zCmd, "goto", nCmd)==0 ){
    int nConflict;
    int vid;
    if( g.argc>4 ) usage("apply STASHID");
    stashid = stash_get_id(g.argc==4 ? g.argv[3] : 0);
    undo_begin();
    vid = db_int(0, "SELECT blob.rid FROM stash,blob"
                    " WHERE stashid=%d AND blob.uuid=stash.hash", stashid);
    nConflict = update_to(vid);
    stash_apply(stashid, nConflict);
    db_multi_exec("UPDATE vfile SET mtime=0 WHERE pathname IN "
                  "(SELECT origname FROM stashfile WHERE stashid=%d)",
                  stashid);
    undo_finish();
  }else
  if( strncmp(zCmd, "diff", nCmd)==0
   || strncmp(zCmd, "gdiff", nCmd)==0
   || strncmp(zCmd, "show", nCmd)==0
   || strncmp(zCmd, "gshow", nCmd)==0
   || strncmp(zCmd, "cat", nCmd)==0
   || strncmp(zCmd, "gcat", nCmd)==0
  ){
    int fBaseline = 0;
    DiffConfig DCfg;

    if( strstr(zCmd,"show")!=0 || strstr(zCmd,"cat")!=0 ){
      fBaseline = 1;
    }
    if( find_option("tk",0,0)!=0 ){
      db_close(0);
      diff_tk(fBaseline ? "stash show" : "stash diff", 3);
      return;
    }
    diff_options(&DCfg, zCmd[0]=='g', 0);
    stashid = stash_get_id(g.argc==4 ? g.argv[3] : 0);
    stash_diff(stashid, fBaseline, &DCfg);
  }else
  if( strncmp(zCmd, "help", nCmd)==0 ){
    g.argv[1] = "help";
    g.argv[2] = "stash";
    g.argc = 3;
    help_cmd();
  }else
  {
    usage("SUBCOMMAND ARGS...");
  }
  db_end_transaction(0);
}
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**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the stat web page
**
*/
#include <string.h>
#include "VERSION.h"
#include "config.h"
#include <string.h>
#include "stat.h"

/*
** For a sufficiently large integer, provide an alternative
** representation as MB or GB or TB.
*/
void bigSizeName(int nOut, char *zOut, sqlite3_int64 v){
  if( v<100000 ){
    sqlite3_snprintf(nOut, zOut, "%,lld bytes", v);
  }else if( v<1000000000 ){
    sqlite3_snprintf(nOut, zOut, "%,lld bytes (%.1fMB)",
                    v, (double)v/1000000.0);
  }else{
    sqlite3_snprintf(nOut, zOut, "%,lld bytes (%.1fGB)",
                    v, (double)v/1000000000.0);
  }
}

/*
** Return the approximate size as KB, MB, GB, or TB.
*/
void approxSizeName(int nOut, char *zOut, sqlite3_int64 v){
  if( v<1000 ){
    sqlite3_snprintf(nOut, zOut, "%,lld bytes", v);
  }else if( v<1000000 ){
    sqlite3_snprintf(nOut, zOut, "%.1fKB", (double)v/1000.0);
  }else if( v<1000000000 ){
    sqlite3_snprintf(nOut, zOut, "%.1fMB", (double)v/1000000.0);
  }else{
    sqlite3_snprintf(nOut, zOut, "%.1fGB", (double)v/1000000000.0);
  }
}

/*
** Generate stats for the email notification subsystem.
*/
void stats_for_email(void){
  const char *zDest = db_get("email-send-method",0);
  int nSub, nASub, nPend, nDPend;
  const char *zDir, *zDb, *zCmd, *zRelay;
  int iCutoff;
  double rDigest;
  @ <tr><th>Outgoing&nbsp;Email:</th><td>
  if( fossil_strcmp(zDest,"pipe")==0
   && (zCmd = db_get("email-send-command",0))!=0
  ){
    @ Piped to command "%h(zCmd)"
  }else
  if( fossil_strcmp(zDest,"db")==0
   && (zDb = db_get("email-send-db",0))!=0
  ){
    sqlite3 *db;
    sqlite3_stmt *pStmt;
    int rc;
    @ Queued to database "%h(zDb)"
    g.dbIgnoreErrors++;
    rc = sqlite3_open(zDb, &db);
    if( rc==SQLITE_OK ){
      rc = sqlite3_prepare_v2(db, "SELECT count(*) FROM email",-1,&pStmt,0);
      if( rc==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){
        @ (%,d(sqlite3_column_int(pStmt,0)) messages,
        @ %,d(file_size(zDb,ExtFILE)) bytes)
      }
      sqlite3_finalize(pStmt);
    }
    g.dbIgnoreErrors--;
    if( rc ){
      @ &larr; cannot access database!
    }
    sqlite3_close(db);
  }else
  if( fossil_strcmp(zDest,"dir")==0
   && (zDir = db_get("email-send-dir",0))!=0
  ){
    @ Written to files in "%h(zDir)"
    @ (%,d(file_directory_size(zDir,0,1)) messages)
  }else
  if( fossil_strcmp(zDest,"relay")==0
   && (zRelay = db_get("email-send-relayhost",0))!=0
  ){
    @ Relay to %h(zRelay) using SMTP
  }
  else{
    @ Off
  }
  @ </td></tr>
  nPend = db_int(0,"SELECT count(*) FROM pending_alert WHERE NOT sentSep");
  nDPend = db_int(0,"SELECT count(*) FROM pending_alert"
                    " WHERE NOT sentDigest");
  @ <tr><th>Pending&nbsp;Alerts:</th><td>
  @ %,d(nPend) normal, %,d(nDPend) digest
  @ </td></tr>
  if( g.perm.Admin ){
    @ <tr><th><a href="%R/subscribers">Subscribers:</a></th><td>
  }else{
    @ <tr><th>Subscribers:</th><td>
  }
  nSub = db_int(0, "SELECT count(*) FROM subscriber");
  iCutoff = db_get_int("email-renew-cutoff",0);
  nASub = db_int(0, "SELECT count(*) FROM subscriber WHERE sverified"
                   " AND NOT sdonotcall AND octet_length(ssub)>1"
                   " AND lastContact>=%d;", iCutoff);
  @ %,d(nASub) active, %,d(nSub) total
  @ </td></tr>
  rDigest = db_double(-1.0, "SELECT (julianday('now') - value)*24.0"
                            " FROM config WHERE name='email-last-digest'");
  if( rDigest>0.0 ){
    @ <tr><th>Last Digest:</th><td>Approximately \
    if( rDigest>48.0 ){
      @ %.1f(rDigest/24.0) days ago</td>
    }else{
      @ %.1f(rDigest) hours ago</td>
    }
  }
}

/*
** WEBPAGE: stat
**
** Show statistics and global information about the repository.
*/
void stat_page(void){
  i64 t;
  int n, m, fsize;
  char zBuf[100];
  i64 t, fsize;
  int n, m;
  int szMax, szAvg;
  int brief;
  const char *p;
  char *z;
  int Y, M, D;

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  brief = P("brief")!=0;
  style_header("Repository Statistics");
  style_adunit_config(ADUNIT_RIGHT_OK);
  if( g.perm.Admin ){
    style_submenu_element("URLs", "urllist");
    style_submenu_element("Schema", "repo_schema");
    style_submenu_element("Web-Cache", "cachestat");
  }
  style_submenu_element("Activity Reports", "reports");
  style_submenu_element("Hash Collisions", "hash-collisions");
  style_submenu_element("Artifacts", "bloblist");
  if( sqlite3_compileoption_used("ENABLE_DBSTAT_VTAB") ){
    style_submenu_element("Table Sizes", "repo-tabsize");
  }
  if( g.perm.Admin || g.perm.Setup || db_get_boolean("test_env_enable",0) ){
    style_submenu_element("Environment", "test_env");
  }
  @ <p><table class="label-value">
  @ <tr><th>Repository&nbsp;Size:</th><td>
  fsize = file_size(g.zRepositoryName);
  @ %d(fsize) bytes
  @ </td></tr>
  @ <tr><th>Number&nbsp;Of&nbsp;Artifacts:</th><td>
  n = db_int(0, "SELECT count(*) FROM blob");
  m = db_int(0, "SELECT count(*) FROM delta");
  @ <table class="label-value">
  fsize = file_size(g.zRepositoryName, ExtFILE);
  @ <tr><th>Repository&nbsp;Size:</th><td>%,lld(fsize) bytes</td>
  @ </td></tr>
  if( !brief ){
    @ <tr><th>Number&nbsp;Of&nbsp;Artifacts:</th><td>
    n = db_int(0, "SELECT count(*) FROM blob WHERE content IS NOT NULL");
    m = db_int(0, "SELECT count(*) FROM delta");
    @ %,d(n) (%,d(n-m) fulltext and %,d(m) deltas)
    if( g.perm.Write ){
      @ <a href='%R/artifact_stats'>Details</a>
    }
    @ </td></tr>
    if( n>0 ){
      int a, b;
      Stmt q;
      @ <tr><th>Uncompressed&nbsp;Artifact&nbsp;Size:</th><td>
      db_prepare(&q, "SELECT total(size), avg(size), max(size)"
                     " FROM blob WHERE content IS NOT NULL /*scan*/");
      db_step(&q);
      t = db_column_int64(&q, 0);
      szAvg = db_column_int(&q, 1);
      szMax = db_column_int(&q, 2);
      db_finalize(&q);
      @ %,d(szAvg) bytes average, %,d(szMax) bytes max, %,lld(t) total
      @ </td></tr>
      @ <tr><th>Compression&nbsp;Ratio:</th><td>
      if( t/fsize < 5 ){
        b = 10;
        a = t/(fsize/10);
      }else{
        b = 1;
        a = t/fsize;
      }
      @ %d(a):%d(b)
      @ </td></tr>
    }
    if( db_table_exists("repository","unversioned") ){
      Stmt q;
      char zStored[100];
      db_prepare(&q,
        "SELECT count(*), sum(sz), sum(octet_length(content))"
        "  FROM unversioned"
        " WHERE length(hash)>1"
      );
      if( db_step(&q)==SQLITE_ROW && (n = db_column_int(&q,0))>0 ){
        sqlite3_int64 iStored, pct;
        iStored = db_column_int64(&q,2);
        pct = (iStored*100 + fsize/2)/fsize;
        approxSizeName(sizeof(zStored), zStored, iStored);
        @ <tr><th>Unversioned&nbsp;Files:</th><td>
        @ %z(href("%R/uvlist"))%d(n) files</a>,
        @ %s(zStored) compressed, %d(pct)%% of total repository space
        @ </td></tr>
      }
      db_finalize(&q);
    }
    @ <tr><th>Number&nbsp;Of&nbsp;Check-ins:</th><td>
    n = db_int(0, "SELECT count(*) FROM event WHERE type='ci' /*scan*/");
    @ %,d(n)
    @ </td></tr>
    @ <tr><th>Number&nbsp;Of&nbsp;Files:</th><td>
    n = db_int(0, "SELECT count(*) FROM filename /*scan*/");
    @ %,d(n)
    @ </td></tr>
    @ <tr><th>Number&nbsp;Of&nbsp;Wiki&nbsp;Pages:</th><td>
    n = db_int(0, "SELECT count(*) FROM tag  /*scan*/"
  @ %d(n) (stored as %d(n-m) full text and %d(m) delta blobs)
  @ </td></tr>
  if( n>0 ){
    int a, b;
                  " WHERE +tagname GLOB 'wiki-*'");
    @ %,d(n)
    @ </td></tr>
    if( g.perm.Chat && db_table_exists("repository","chat") ){
      sqlite3_int64 sz = 0;
      char zSz[100];
      n = db_int(0, "SELECT max(msgid) FROM chat");
      m = db_int(0, "SELECT count(*) FROM chat WHERE mdel IS NOT TRUE");
      sz = db_int64(0, "SELECT sum(coalesce(octet_length(xmsg),0)+"
                                  "coalesce(octet_length(file),0)) FROM chat");
      approxSizeName(sizeof(zSz), zSz, sz);
      @ <tr><th>Number&nbsp;Of&nbsp;Chat&nbsp;Messages:</th>
      @ <td>%,d(n) (%,d(m) still alive, %s(zSz) in size)</td></tr>
    }
    n = db_int(0, "SELECT count(*) FROM tag  /*scan*/"
                  " WHERE +tagname GLOB 'tkt-*'");
    if( n>0 ){
      @ <tr><th>Number&nbsp;Of&nbsp;Tickets:</th><td>%,d(n)</td></tr>
    }
    if( db_table_exists("repository","forumpost") ){
      n = db_int(0, "SELECT count(*) FROM forumpost/*scan*/");
      if( n>0 ){
        int nThread = db_int(0, "SELECT count(*) FROM forumpost"
                                " WHERE froot=fpid");
        @ <tr><th>Number&nbsp;Of&nbsp;Forum&nbsp;Posts:</th>
        @ <td>%,d(n) on %d(nThread) threads</td></tr>
      }
    }
  }
  @ <tr><th>Project&nbsp;Age:</th><td>
  z = db_text(0, "SELECT timediff('now',(SELECT min(mtime) FROM event));");
  sscanf(z, "+%d-%d-%d", &Y, &M, &D);
  if( Y>0 ){
    @ %d(Y) years, \
  }
  if( M>0 ){
    @ %d(M) months, \
  }
  @ %d(D) days
  @ </td></tr>
  p = db_get("project-code", 0);
  if( p ){
    @ <tr><th>Project&nbsp;ID:</th>
    @     <td>%h(p) %h(db_get("project-name",""))</td></tr>
  }
  p = db_get("parent-project-code", 0);
  if( p ){
    @ <tr><th>Parent&nbsp;Project&nbsp;ID:</th>
    @      <td>%h(p) %h(db_get("parent-project-name",""))</td></tr>
  }
  /* @ <tr><th>Server&nbsp;ID:</th><td>%h(db_get("server-code",""))</td></tr> */
  @ <tr><th>Fossil&nbsp;Version:</th><td>
  @ %h(MANIFEST_DATE) %h(MANIFEST_VERSION)
  @ (%h(RELEASE_VERSION)) <a href='version?verbose'>(details)</a>
  @ </td></tr>
  @ <tr><th>SQLite&nbsp;Version:</th><td>%.19s(sqlite3_sourceid())
  @ [%.10s(&sqlite3_sourceid()[20])] (%s(sqlite3_libversion()))
  @ <a href='version?verbose'>(details)</a></td></tr>
  if( g.perm.Admin ){
    const char *zCgi = P("SERVER_SOFTWARE");
    @ <tr><th>OpenSSL&nbsp;Version:</th>
    @     <td>%z(fossil_openssl_version())</td></tr>
    if( zCgi ){
      @ <tr><th>Web&nbsp;Server:</th><td>%s(zCgi)</td></tr>
    }
  }
  if( g.eHashPolicy!=HPOLICY_AUTO ){
    @ <tr><th>Schema&nbsp;Version:</th><td>%h(g.zAuxSchema),
    @ %s(hpolicy_name())</td></tr>
  }else{
    @ <tr><th>Schema&nbsp;Version:</th><td>%h(g.zAuxSchema)</td></tr>
  }
  @ <tr><th>Repository Rebuilt:</th><td>
  @ %h(db_get_mtime("rebuilt","%Y-%m-%d %H:%M:%S","Never"))
  @ By Fossil %h(db_get("rebuilt","Unknown"))</td></tr>
  @ <tr><th>Database&nbsp;Stats:</th><td>
  @ %,d(db_int(0, "PRAGMA repository.page_count")) pages,
  @ %d(db_int(0, "PRAGMA repository.page_size")) bytes/page,
  @ %,d(db_int(0, "PRAGMA repository.freelist_count")) free pages,
  @ %s(db_text(0, "PRAGMA repository.encoding")),
  @ %s(db_text(0, "PRAGMA repository.journal_mode")) mode
  @ </td></tr>
  if( g.perm.Admin && g.zErrlog && g.zErrlog[0] ){
    i64 szFile = file_size(g.zErrlog, ExtFILE);
    if( szFile>=0 ){
      @ <tr><th>Error Log:</th>
      @ <td><a href='%R/errorlog'>%h(g.zErrlog)</a> (%,lld(szFile) bytes)
    }
    @ </td></tr>
  }
  if( g.perm.Admin ){
    @ <tr><th>Backoffice:</th>
    @ <td>Last run: %z(backoffice_last_run())</td></tr>
  }
  if( g.perm.Admin && alert_enabled() ){
    stats_for_email();
  }

  @ </table>
  style_finish_page();
}

/*
** COMMAND: dbstat
**
** Usage: %fossil dbstat OPTIONS
**
** Shows statistics and global information about the repository and/or
** verify the integrity of a repository.
**
** Options:
**   -b|--brief           Only show essential elements
**   --db-check           Run "PRAGMA quick_check" on the repository database
**   --db-verify          Run a full verification of the repository integrity.
**                        This involves decoding and reparsing all artifacts
**                        and can take significant time.
**   --omit-version-info  Omit the SQLite and Fossil version information
*/
void dbstat_cmd(void){
  i64 t, fsize;
  int n, m;
  int szMax, szAvg;
  int brief;
  int omitVers;            /* Omit Fossil and SQLite version information */
  int dbCheck;             /* True for the --db-check option */
  const int colWidth = -19 /* printf alignment/width for left column */;
  const char *p, *z;

  brief = find_option("brief", "b",0)!=0;
  omitVers = find_option("omit-version-info", 0, 0)!=0;
  dbCheck = find_option("db-check",0,0)!=0;
  if( find_option("db-verify",0,0)!=0 ) dbCheck = 2;
  db_find_and_open_repository(0,0);

  /* We should be done with options.. */
  verify_all_options();

  if( (z = db_get("project-name",0))!=0
   || (z = db_get("short-project-name",0))!=0
  ){
    fossil_print("%*s%s\n", colWidth, "project-name:", z);
  }
  fsize = file_size(g.zRepositoryName, ExtFILE);
  fossil_print( "%*s%,lld bytes\n", colWidth, "repository-size:", fsize);
  if( !brief ){
    n = db_int(0, "SELECT count(*) FROM blob WHERE content IS NOT NULL");
    m = db_int(0, "SELECT count(*) FROM delta");
    fossil_print("%*s%,d (stored as %,d full text and %,d deltas)\n",
                 colWidth, "artifact-count:",
                 n, n-m, m);
    if( n>0 ){
      int a, b;
    @ <tr><th>Uncompressed&nbsp;Artifact&nbsp;Size:</th><td>
    t = db_int64(0, "SELECT total(size) FROM blob WHERE size>0");
    sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", t);
    @ %d((int)(((double)t)/(double)n)) bytes average, %s(zBuf) bytes total
      Stmt q;
      db_prepare(&q, "SELECT total(size), avg(size), max(size)"
                     " FROM blob WHERE size>0");
      db_step(&q);
      t = db_column_int64(&q, 0);
      szAvg = db_column_int(&q, 1);
      szMax = db_column_int(&q, 2);
      db_finalize(&q);
      fossil_print( "%*s%,d average, "
                    "%,d max, %,lld total\n",
    @ </td></tr>
    @ <tr><th>Compression&nbsp;Ratio:</th><td>
    if( t/fsize < 5 ){
      b = 10;
      fsize /= 10;
    }else{
      b = 1;
    }
    a = t/fsize;
    @ %d(a):%d(b)
    @ </td></tr>
                    colWidth, "artifact-sizes:",
                    szAvg, szMax, t);
      if( t/fsize < 5 ){
        b = 10;
        fsize /= 10;
      }else{
        b = 1;
      }
      a = t/fsize;
      fossil_print("%*s%d:%d\n", colWidth, "compression-ratio:", a, b);
    }
    n = db_int(0, "SELECT COUNT(*) FROM event e WHERE e.type='ci'");
    fossil_print("%*s%,d\n", colWidth, "check-ins:", n);
    n = db_int(0, "SELECT count(*) FROM filename /*scan*/");
    fossil_print("%*s%,d across all branches\n", colWidth, "files:", n);
    n = db_int(0, "SELECT count(*) FROM ("
               "SELECT DISTINCT substr(tagname,6) "
               "FROM tag JOIN tagxref USING('tagid')"
               " WHERE tagname GLOB 'wiki-*'"
               " AND TYPEOF(tagxref.value+0)='integer'"
               ")");
    m = db_int(0, "SELECT COUNT(*) FROM event WHERE type='w'");
    fossil_print("%*s%,d (%,d changes)\n", colWidth, "wiki-pages:", n, m);
    n = db_int(0, "SELECT count(*) FROM tag  /*scan*/"
                  " WHERE tagname GLOB 'tkt-*'");
    m = db_int(0, "SELECT COUNT(*) FROM event WHERE type='t'");
    fossil_print("%*s%,d (%,d changes)\n", colWidth, "tickets:", n, m);
    n = db_int(0, "SELECT COUNT(*) FROM event WHERE type='e'");
    fossil_print("%*s%,d\n", colWidth, "events:", n);
    if( db_table_exists("repository","forumpost") ){
      n = db_int(0, "SELECT count(*) FROM forumpost/*scan*/");
      if( n>0 ){
        int nThread = db_int(0, "SELECT count(*) FROM forumpost"
                                " WHERE froot=fpid");
        fossil_print("%*s%,d (on %,d threads)\n", colWidth, "forum-posts:",
                     n, nThread);
      }
    }
    n = db_int(0, "SELECT COUNT(*) FROM event WHERE type='g'");
    fossil_print("%*s%,d\n", colWidth, "tag-changes:", n);
    z = db_text(0, "SELECT datetime(mtime) || ' - about ' ||"
                   " CAST(julianday('now') - mtime AS INTEGER)"
                   " || ' days ago' FROM event "
                   " ORDER BY mtime DESC LIMIT 1");
    fossil_print("%*s%s\n", colWidth, "latest-change:", z);
  }
  n = db_int(0, "SELECT julianday('now') - (SELECT min(mtime) FROM event)"
                " + 0.99");
  fossil_print("%*s%,d days or approximately %.2f years.\n",
               colWidth, "project-age:", n, n/365.2425);
  if( !brief ){
    p = db_get("project-code", 0);
    if( p ){
      fossil_print("%*s%s\n", colWidth, "project-id:", p);
    }
  }
#if 0
  /* Server-id is not useful information any more */
  fossil_print("%*s%s\n", colWidth, "server-id:", db_get("server-code", 0));
#endif
  fossil_print("%*s%s\n", colWidth, "schema-version:", g.zAuxSchema);
  if( !omitVers ){
    fossil_print("%*s%s %s [%s] (%s)\n",
                 colWidth, "fossil-version:",
                 MANIFEST_DATE, MANIFEST_VERSION, RELEASE_VERSION,
                 COMPILER_NAME);
    fossil_print("%*s%.19s [%.10s] (%s)\n",
                 colWidth, "sqlite-version:",
                 sqlite3_sourceid(), &sqlite3_sourceid()[20],
                 sqlite3_libversion());
  }
  fossil_print("%*s%,d pages, %d bytes/pg, %,d free pages, "
               "%s, %s mode\n",
               colWidth, "database-stats:",
               db_int(0, "PRAGMA repository.page_count"),
               db_int(0, "PRAGMA repository.page_size"),
               db_int(0, "PRAGMA repository.freelist_count"),
               db_text(0, "PRAGMA repository.encoding"),
               db_text(0, "PRAGMA repository.journal_mode"));
  if( dbCheck ){
    if( dbCheck<2 ){
      char *zRes = db_text(0, "PRAGMA repository.quick_check(1)");
      fossil_print("%*s%s\n", colWidth, "database-check:", zRes);
    }else{
      char *newArgv[3];
      newArgv[0] = g.argv[0];
      newArgv[1] = "test-integrity";
      newArgv[2] = 0;
      g.argv = newArgv;
      g.argc = 2;
      fossil_print("Full repository verification follows:\n");
      test_integrity();
    }
  }
}

/*
** Return a string which is the public URL used to access this repository.
** Or return a NULL pointer if this repository does not have a public
** access URL.
**
** Algorithm:
**
** The public URL is given by the email-url property.  But it is only
** returned if there have been one more more accesses (as recorded by
** "baseurl:URL" entries in the CONFIG table).
*/
const char *public_url(void){
  const char *zUrl = db_get("email-url", 0);
  if( zUrl==0 ) return 0;
  if( !db_exists("SELECT 1 FROM config WHERE name='baseurl:%q'", zUrl) ){
    return 0;
  }
  return zUrl;
}


/*
** WEBPAGE: urllist
**
** Show ways in which this repository has been accessed
*/
void urllist_page(void){
  Stmt q;
  int cnt;
  int total = 0;
  int showAll = P("all")!=0;
  int nOmitted;
  sqlite3_int64 iNow;
  char *zPriorRepo = 0;

  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }

  style_set_current_feature("stat");
  style_header("URLs and Checkouts");
  style_adunit_config(ADUNIT_RIGHT_OK);
  style_submenu_element("Stat", "stat");
  style_submenu_element("Schema", "repo_schema");
  iNow = db_int64(0, "SELECT strftime('%%s','now')");


  db_prepare(&q, "SELECT substr(name,9), datetime(mtime,'unixepoch'), mtime"
                 "  FROM config WHERE name GLOB 'baseurl:*' ORDER BY 3 DESC");
  cnt = 0;
  nOmitted = 0;
  while( db_step(&q)==SQLITE_ROW ){
    if( cnt==0 ){
      @ <div class="section">URLs used to access this repository</div>
      @ <table border="0" width='100%%'>
    }
    if( !showAll && db_column_int64(&q,2)<(iNow - 3600*24*30) && cnt>8 ){
      nOmitted++;
    }else{
      @ <tr><td width='100%%'>%h(db_column_text(&q,0))</td>
      @ <td><nobr>%h(db_column_text(&q,1))</nobr></td></tr>
    }
    cnt++;
  }
  db_finalize(&q);

  if( nOmitted ){
    @ <tr><td><a href="urllist?all"><i>Show %d(nOmitted) more...</i></a>
  }
  if( cnt ){
    @ </table>
    total += cnt;
  }
  if( P("urlonly") ){
    style_finish_page();
    return;
  }
  @ <tr><th>Number&nbsp;Of&nbsp;Check-ins:</th><td>
  n = db_int(0, "SELECT count(distinct mid) FROM mlink");
  @ %d(n)
  @ </td></tr>
  @ <tr><th>Number&nbsp;Of&nbsp;Files:</th><td>
  n = db_int(0, "SELECT count(*) FROM filename");
  @ %d(n)
  @ </td></tr>
  @ <tr><th>Number&nbsp;Of&nbsp;Wiki&nbsp;Pages:</th><td>
  n = db_int(0, "SELECT count(*) FROM tag WHERE +tagname GLOB 'wiki-*'");
  @ %d(n)
  @ </td></tr>
  @ <tr><th>Number&nbsp;Of&nbsp;Tickets:</th><td>
  n = db_int(0, "SELECT count(*) FROM tag WHERE +tagname GLOB 'tkt-*'");
  @ %d(n)
  @ </td></tr>
  @ <tr><th>Duration&nbsp;Of&nbsp;Project:</th><td>
  n = db_int(0, "SELECT julianday('now') - (SELECT min(mtime) FROM event) + 0.99");
  @ %d(n) days
  @ </td></tr>
  @ <tr><th>Project&nbsp;ID:</th><td>
  @ %h(db_get("project-code",""))
  @ </td></tr>
  @ <tr><th>Server&nbsp;ID:</th><td>
  @ %h(db_get("server-code",""))
  @ </td></tr>
  @ </table></p>
  style_footer();


  db_prepare(&q, "SELECT substr(name,7), datetime(mtime,'unixepoch')"
                 "  FROM config WHERE name GLOB 'ckout:*' ORDER BY 2 DESC");
  cnt = 0;
  while( db_step(&q)==SQLITE_ROW ){
    const char *zPath = db_column_text(&q,0);
    if( vfile_top_of_checkout(zPath) ){
      if( cnt==0 ){
        @ <div class="section">Checkouts</div>
        @ <table border="0" width='100%%'>
      }
      @ <tr><td width='100%%'>%h(zPath)</td>
      @ <td><nobr>%h(db_column_text(&q,1))</nobr></td></tr>
      cnt++;
    }
  }
  db_finalize(&q);
  if( cnt ){
    @ </table>
    total += cnt;
  }

  cnt = 0;
  db_prepare(&q,
    "SELECT substr(name,10), datetime(mtime,'unixepoch')"
    "  FROM config WHERE name GLOB 'syncwith:*'"
    "UNION ALL "
    "SELECT substr(name,10), datetime(mtime,'unixepoch')"
    "  FROM config WHERE name GLOB 'syncfrom:*'"
    "UNION ALL "
    "SELECT substr(name,9), datetime(mtime,'unixepoch')"
    "  FROM config WHERE name GLOB 'gitpush:*'"
    "GROUP BY 1 ORDER BY 2 DESC"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zURL = db_column_text(&q,0);
    UrlData x;
    if( cnt==0 ){
      @ <div class="section">Recently synced with these URLs</div>
      @ <table border='0' width='100%%'>
    }
    memset(&x, 0, sizeof(x));
    url_parse_local(zURL, URL_OMIT_USER, &x);
    @ <tr><td width='100%%'><a href='%h(x.canonical)'>%h(x.canonical)</a>
    @ <td><nobr>%h(db_column_text(&q,1))</nobr></td></tr>
    cnt++;
    url_unparse(&x);
  }
  db_finalize(&q);
  if( cnt ){
    @ </table>
    total += cnt;
  }

  cnt = 0;
  db_prepare(&q,
    "SELECT"
    " substr(name,6),"
    " datetime(mtime,'unixepoch'),"
    " value->>'type',"
    " value->>'src'\n"
    "FROM config\n"
    "WHERE name GLOB 'link:*'\n"
    "AND json_valid(value)\n"
    "ORDER BY 4, 2 DESC"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUrl = db_column_text(&q, 0);
    const char *zType = db_column_text(&q, 2);
    const char *zSrc = db_column_text(&q, 3);
    if( zUrl==0 || zSrc==0 ) continue;
    if( cnt++==0 ){
      @ <div class="section">Links from other repositories</div>
      @ <table border='0' width='100%%'>
    }
    if( zPriorRepo==0 || strcmp(zPriorRepo,zSrc)!=0 ){
      fossil_free(zPriorRepo);
      zPriorRepo = fossil_strdup(zSrc);
      @ <tr><td colspan="4">\
      @ From <a href='%T(zSrc)'>%h(zSrc)</a>...</td></tr>
    }
    @ <tr><td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</td>
    @ <td width='90%%'><a href='%h(zUrl)'>%h(zUrl)</a></td>
    if( zType ){
      @ <td>&nbsp;(%h(zType))&nbsp;</td>
    }else{
      @ <td>&nbsp;</td>
    }
    @ <td><nobr>%h(db_column_text(&q,1))</nobr></td></tr>
  }
  db_finalize(&q);
  fossil_free(zPriorRepo);
  if( cnt ){
    @ </table>
    total += cnt;
  }

  cnt = 0;
  db_prepare(&q,
    "SELECT"
    " value,"
    " url_nouser(value),"
    " substr(name,10),"
    " datetime(mtime,'unixepoch')"
    "FROM config\n"
    "WHERE name GLOB 'sync-url:*'\n"
    "ORDER BY 2"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUrl = db_column_text(&q, 0);
    const char *zLink = db_column_text(&q, 1);
    const char *zName = db_column_text(&q, 2);
    if( cnt++==0 ){
      @ <div class="section">Defined sync targets</div>
      @ <table border='0' width='100%%'>
    }
    @ <tr><td>%h(zName)</td><td>&nbsp;&nbsp;</td>
    @ <td width='95%%'><a href='%h(zLink)'>%h(zUrl)</a></td>
    @ <td><nobr>%h(db_column_text(&q,3))</nobr></td></tr>
  }
  db_finalize(&q);
  if( cnt ){
    @ </table>
    total += cnt;
  }


  if( total==0 ){
    @ <p>No record of any URLs or checkouts</p>
  }
  style_finish_page();
}

/*
** WEBPAGE: repo_schema
**
** Show the repository schema
*/
void repo_schema_page(void){
  Stmt q;
  Blob sql;
  const char *zArg = P("n");
  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }

  if( zArg!=0
   && db_table_exists("repository",zArg)
   && cgi_csrf_safe(1)
  ){
    if( P("analyze")!=0 ){
      db_multi_exec("ANALYZE \"%w\"", zArg);
    }else if( P("analyze200")!=0 ){
      db_multi_exec("PRAGMA analysis_limit=200; ANALYZE \"%w\"", zArg);
    }else if( P("deanalyze")!=0 ){
      db_unprotect(PROTECT_ALL);
      db_multi_exec("DELETE FROM repository.sqlite_stat1"
                    " WHERE tbl LIKE %Q", zArg);
      db_protect_pop();
    }
  }

  style_set_current_feature("stat");
  style_header("Repository Schema");
  style_adunit_config(ADUNIT_RIGHT_OK);
  style_submenu_element("Stat", "stat");
  style_submenu_element("URLs", "urllist");
  if( sqlite3_compileoption_used("ENABLE_DBSTAT_VTAB") ){
    style_submenu_element("Table Sizes", "repo-tabsize");
  }
  blob_init(&sql,
    "SELECT sql FROM repository.sqlite_schema WHERE sql IS NOT NULL", -1);
  if( zArg ){
    style_submenu_element("All", "repo_schema");
    blob_appendf(&sql, " AND (tbl_name=%Q OR name=%Q)", zArg, zArg);
  }
  blob_appendf(&sql, " ORDER BY tbl_name, type<>'table', name");
  db_prepare(&q, "%s", blob_str(&sql)/*safe-for-%s*/);
  blob_reset(&sql);
  @ <pre>
  while( db_step(&q)==SQLITE_ROW ){
    @ %h(db_column_text(&q, 0));
  }
  @ </pre>
  db_finalize(&q);
  if( db_table_exists("repository","sqlite_stat1") ){
    if( zArg ){
      db_prepare(&q,
        "SELECT tbl, idx, stat FROM repository.sqlite_stat1"
        " WHERE tbl LIKE %Q OR idx LIKE %Q"
        " ORDER BY tbl, idx", zArg, zArg);

      @ <hr>
      @ <pre>
      while( db_step(&q)==SQLITE_ROW ){
        const char *zTab = db_column_text(&q,0);
        const char *zIdx = db_column_text(&q,1);
        const char *zStat = db_column_text(&q,2);
        @ INSERT INTO sqlite_stat1 VALUES('%h(zTab)','%h(zIdx)','%h(zStat)');
      }
      @ </pre>
      db_finalize(&q);
    }else{
      style_submenu_element("Stat1","repo_stat1");
    }
  }
  @ <hr><form method="POST">
  @ <input type="submit" name="analyze" value="Run ANALYZE"><br />
  @ <input type="submit" name="analyze200"\
  @  value="Run ANALYZE with limit=200"><br />
  @ <input type="submit" name="deanalyze" value="De-ANALYZE">
  @ </form>

  style_finish_page();
}

/*
** WEBPAGE: repo_stat1
**
** Show the sqlite_stat1 table for the repository schema
*/
void repo_stat1_page(void){
  int bTabular;
  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }
  bTabular = PB("tabular");

  if( P("analyze")!=0 && cgi_csrf_safe(1) ){
    db_multi_exec("ANALYZE");
  }else if( P("analyze200")!=0 && cgi_csrf_safe(1) ){
    db_multi_exec("PRAGMA analysis_limit=200; ANALYZE;");
  }else if( P("deanalyze")!=0 && cgi_csrf_safe(1) ){
    db_unprotect(PROTECT_ALL);
    db_multi_exec("DELETE FROM repository.sqlite_stat1;");
    db_protect_pop();
  }
  style_set_current_feature("stat");
  style_header("Repository STAT1 Table");
  style_adunit_config(ADUNIT_RIGHT_OK);
  style_submenu_element("Stat", "stat");
  style_submenu_element("Schema", "repo_schema");
  style_submenu_checkbox("tabular", "Tabular", 0, 0);
  if( db_table_exists("repository","sqlite_stat1") ){
    Stmt q;
    db_prepare(&q,
      "SELECT tbl, idx, stat FROM repository.sqlite_stat1"
      " ORDER BY tbl, idx");
    if( bTabular ){
      @ <table border="1" cellpadding="0" cellspacing="0">
      @ <tr><th>Table<th>Index<th>Stat
    }else{
      @ <pre>
    }
    while( db_step(&q)==SQLITE_ROW ){
      const char *zTab = db_column_text(&q,0);
      const char *zIdx = db_column_text(&q,1);
      const char *zStat = db_column_text(&q,2);
      char *zUrl = href("%R/repo_schema?n=%t",zTab);
      if( bTabular ){
        @ <tr><td>%z(zUrl)%h(zTab)</a><td>%h(zIdx)<td>%h(zStat)
      }else{
        @ INSERT INTO sqlite_stat1 \
        @ VALUES('%z(zUrl)%h(zTab)</a>','%h(zIdx)','%h(zStat)');
      }
    }
    if( bTabular ){
      @ </table>
    }else{
      @ </pre>
    }
    db_finalize(&q);
  }
  @ <p><form method="POST">
  if( bTabular ){
    @ <input type="hidden" name="tabular" value="1">
  }
  @ <input type="submit" name="analyze" value="Run ANALYZE"><br />
  @ <input type="submit" name="analyze200"\
  @  value="Run ANALYZE with limit=200"><br>
  @ <input type="submit" name="deanalyze"\
  @  value="De-ANALYZE">
  @ </form>
  style_finish_page();
}

/*
** WEBPAGE: repo-tabsize
**
** Show relative sizes of tables in the repository database.
*/
void repo_tabsize_page(void){
  int nPageFree;
  sqlite3_int64 fsize;
  char zBuf[100];

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  style_set_current_feature("stat");
  style_header("Repository Table Sizes");
  style_adunit_config(ADUNIT_RIGHT_OK);
  style_submenu_element("Stat", "stat");
  if( g.perm.Admin ){
    style_submenu_element("Schema", "repo_schema");
  }
  db_multi_exec(
    "CREATE TEMP TABLE trans(name TEXT PRIMARY KEY,tabname TEXT)WITHOUT ROWID;"
    "INSERT INTO trans(name,tabname)"
    "   SELECT name, tbl_name FROM repository.sqlite_schema;"
    "CREATE TEMP TABLE piechart(amt REAL, label TEXT);"
    "INSERT INTO piechart(amt,label)"
    "  SELECT sum(pageno),"
    "  coalesce((SELECT tabname FROM trans WHERE trans.name=dbstat.name),name)"
    "    FROM dbstat('repository',TRUE)"
    "   GROUP BY 2 ORDER BY 2;"
  );
  nPageFree = db_int(0, "PRAGMA repository.freelist_count");
  if( nPageFree>0 ){
    db_multi_exec(
      "INSERT INTO piechart(amt,label) VALUES(%d,'freelist')",
      nPageFree
    );
  }
  fsize = file_size(g.zRepositoryName, ExtFILE);
  approxSizeName(sizeof(zBuf), zBuf, fsize);
  @ <h2>Repository Size: %s(zBuf)</h2>
  @ <center><svg width='800' height='500'>
  piechart_render(800,500,PIE_OTHER|PIE_PERCENT);
  @ </svg></center>

  if( g.localOpen ){
    db_multi_exec(
      "DELETE FROM trans;"
      "INSERT INTO trans(name,tabname)"
      "   SELECT name, tbl_name FROM localdb.sqlite_schema;"
      "DELETE FROM piechart;"
      "INSERT INTO piechart(amt,label)"
      "  SELECT sum(pageno), "
      " coalesce((SELECT tabname FROM trans WHERE trans.name=dbstat.name),name)"
      "    FROM dbstat('localdb',TRUE)"
      "   GROUP BY 2 ORDER BY 2;"
    );
    nPageFree = db_int(0, "PRAGMA localdb.freelist_count");
    if( nPageFree>0 ){
      db_multi_exec(
        "INSERT INTO piechart(amt,label) VALUES(%d,'freelist')",
        nPageFree
      );
    }
    fsize = file_size(g.zLocalDbName, ExtFILE);
    approxSizeName(sizeof(zBuf), zBuf, fsize);
    @ <h2>%h(file_tail(g.zLocalDbName)) Size: %s(zBuf)</h2>
    @ <center><svg width='800' height='500'>
    piechart_render(800,500,PIE_OTHER|PIE_PERCENT);
    @ </svg></center>
  }
  style_finish_page();
}

/*
** Gather statistics on artifact types, counts, and sizes.
**
** Only populate the artstat.atype field if the bWithTypes parameter is true.
*/
void gather_artifact_stats(int bWithTypes){
  static const char zSql[] =
    @ CREATE TEMP TABLE artstat(
    @   id INTEGER PRIMARY KEY,   -- Corresponds to BLOB.RID
    @   atype TEXT,               -- 'data', 'manifest', 'tag', 'wiki', etc.
    @   isDelta BOOLEAN,          -- true if stored as a delta
    @   szExp,                    -- expanded, uncompressed size
    @   szCmpr                    -- size as stored on disk
    @ );
    @ INSERT INTO artstat(id,atype,isDelta,szExp,szCmpr)
    @    SELECT blob.rid, NULL,
    @           delta.rid IS NOT NULL,
    @           size, octet_length(content)
    @      FROM blob LEFT JOIN delta ON blob.rid=delta.rid
    @     WHERE content IS NOT NULL;
  ;
  static const char zSql2[] =
    @ UPDATE artstat SET atype='file'
    @  WHERE +id IN (SELECT fid FROM mlink);
    @ UPDATE artstat SET atype='manifest'
    @  WHERE id IN (SELECT objid FROM event WHERE type='ci') AND atype IS NULL;
    @ UPDATE artstat SET atype='forum'
    @  WHERE id IN (SELECT objid FROM event WHERE type='f') AND atype IS NULL;
    @ UPDATE artstat SET atype='cluster'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT rid FROM tagxref
    @                WHERE tagid=(SELECT tagid FROM tag
    @                              WHERE tagname='cluster'));
    @ UPDATE artstat SET atype='ticket'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT rid FROM tagxref
    @                WHERE tagid IN (SELECT tagid FROM tag
    @                              WHERE tagname GLOB 'tkt-*'));
    @ UPDATE artstat SET atype='wiki'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT rid FROM tagxref
    @                WHERE tagid IN (SELECT tagid FROM tag
    @                              WHERE tagname GLOB 'wiki-*'));
    @ UPDATE artstat SET atype='technote'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT rid FROM tagxref
    @                WHERE tagid IN (SELECT tagid FROM tag
    @                              WHERE tagname GLOB 'event-*'));
    @ UPDATE artstat SET atype='attachment'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT attachid FROM attachment UNION
    @               SELECT blob.rid FROM attachment JOIN blob ON uuid=src);
    @ UPDATE artstat SET atype='tag'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT srcid FROM tagxref);
    @ UPDATE artstat SET atype='tag'
    @  WHERE atype IS NULL
    @    AND id IN (SELECT objid FROM event WHERE type='g');
    @ UPDATE artstat SET atype='unused' WHERE atype IS NULL;
  ;
  db_multi_exec("%s", zSql/*safe-for-%s*/);
  if( bWithTypes ){
    db_multi_exec("%s", zSql2/*safe-for-%s*/);
  }
}

/*
** Output text "the largest N artifacts".  Make this text a hyperlink
** to bigbloblist if N is not too big.
*/
static void largest_n_artifacts(int N){
  if( N>250 ){
    @ (the largest %,d(N) artifacts)
  }else{
    @ (the <a href='%R/bigbloblist?n=%d(N)'>largest %d(N) artifacts</a>)
  }
}

/*
** WEBPAGE: artifact_stats
**
** Show information about the sizes of artifacts in this repository
*/
void artifact_stats_page(void){
  Stmt q;
  int nTotal = 0;            /* Total number of artifacts */
  int nDelta = 0;            /* Total number of deltas */
  int nFull = 0;             /* Total number of full-texts */
  double avgCmpr = 0.0;      /* Average size of an artifact after compression */
  double avgExp = 0.0;       /* Average size of an uncompressed artifact */
  int mxCmpr = 0;            /* Maximum compressed artifact size */
  int mxExp = 0;             /* Maximum uncompressed artifact size */
  sqlite3_int64 sumCmpr = 0; /* Total size of all compressed artifacts */
  sqlite3_int64 sumExp = 0;  /* Total size of all expanded artifacts */
  sqlite3_int64 sz1pct = 0;  /* Space used by largest 1% */
  sqlite3_int64 sz10pct = 0; /* Space used by largest 10% */
  sqlite3_int64 sz25pct = 0; /* Space used by largest 25% */
  sqlite3_int64 sz50pct = 0; /* Space used by largest 50% */
  int n50pct = 0;            /* Artifacts using the first 50% of space */
  int n;                     /* Loop counter */
  int medCmpr = 0;           /* Median compressed artifact size */
  int medExp = 0;            /* Median expanded artifact size */
  int med;
  double r;

  login_check_credentials();

  /* These stats are expensive to compute.  To disable them for
  ** user without check-in privileges, to prevent excessive usage by
  ** robots and random passers-by on the internet
  */
  if( !g.perm.Write && !db_get_boolean("artifact_stats_enable",0) ){
    login_needed(g.anon.Write);
    return;
  }
  cgi_check_for_malice();
  fossil_nice_default();

  style_set_current_feature("stat");
  style_header("Artifact Statistics");
  style_submenu_element("Repository Stats", "stat");
  style_submenu_element("Artifact List", "bloblist");
  gather_artifact_stats(1);

  db_prepare(&q,
    "SELECT count(*), sum(isDelta), max(szCmpr),"
    "       max(szExp), sum(szCmpr), sum(szExp)"
    "  FROM artstat"
  );
  db_step(&q);
  nTotal = db_column_int(&q,0);
  nDelta = db_column_int(&q,1);
  nFull = nTotal - nDelta;
  mxCmpr = db_column_int(&q, 2);
  mxExp = db_column_int(&q, 3);
  sumCmpr = db_column_int64(&q, 4);
  sumExp = db_column_int64(&q, 5);
  db_finalize(&q);
  if( nTotal==0 ){
    @ No artifacts in this repository!
    style_finish_page();
    return;
  }
  avgCmpr = (double)sumCmpr/nTotal;
  avgExp = (double)sumExp/nTotal;

  db_prepare(&q, "SELECT szCmpr FROM artstat ORDER BY 1 DESC");
  r = 0;
  n = 0;
  while( db_step(&q)==SQLITE_ROW ){
    r += db_column_int(&q, 0);
    if( n50pct==0 && r>=sumCmpr/2 ) n50pct = n;
    if( n==(nTotal+99)/100 ) sz1pct = (sqlite3_int64)r;
    if( n==(nTotal+9)/10 ) sz10pct = (sqlite3_int64)r;
    if( n==(nTotal+4)/5 ) sz25pct = (sqlite3_int64)r;
    if( n==(nTotal+1)/2 ){
      sz50pct = (sqlite3_int64)r;
      medCmpr = db_column_int(&q,0);
    }
    n++;
  }
  db_finalize(&q);

  @ <h1>Overall Artifact Size Statistics:</h1>
  @ <table class="label-value">
  @ <tr><th>Number of artifacts:</th><td>%,d(nTotal)</td></tr>
  @ <tr><th>Number of deltas:</th>\
  @ <td>%,d(nDelta) (%d(nDelta*100/nTotal)%%)</td></tr>
  @ <tr><th>Number of full-text:</th><td>%,d(nFull) \
  @ (%d(nFull*100/nTotal)%%)</td></tr>
  medExp = db_int(0, "SELECT szExp FROM artstat ORDER BY szExp"
                     " LIMIT 1 OFFSET %d", nTotal/2);
  @ <tr><th>Uncompressed artifact sizes:</th>\
  @ <td>largest: %,d(mxExp), average: %,d((int)avgExp), median: %,d(medExp)</td>
  @ <tr><th>Compressed artifact sizes:</th>\
  @ <td>largest: %,d(mxCmpr), average: %,d((int)avgCmpr), \
  @ median: %,d(medCmpr)</td>

  db_prepare(&q,
    "SELECT avg(szCmpr), max(szCmpr) FROM artstat WHERE isDelta"
  );
  if( db_step(&q)==SQLITE_ROW ){
    int mxDelta = db_column_int(&q,1);
    double avgDelta = db_column_double(&q,0);
    med = db_int(0, "SELECT szCmpr FROM artstat WHERE isDelta ORDER BY szCmpr"
                    " LIMIT 1 OFFSET %d", nDelta/2);
    @ <tr><th>Delta artifact sizes:</th>\
    @ <td>largest: %,d(mxDelta), average: %,d((int)avgDelta), \
    @ median: %,d(med)</td>
  }
  db_finalize(&q);
  r = db_double(0.0, "SELECT avg(szCmpr) FROM artstat WHERE NOT isDelta;");
  med = db_int(0, "SELECT szCmpr FROM artstat WHERE NOT isDelta ORDER BY szCmpr"
                  " LIMIT 1 OFFSET %d", nFull/2);
  @ <tr><th>Full-text artifact sizes:</th>
  @ <td>largest: %,d(mxCmpr), average: %,d((int)r), median: %,d(med)</td>
  @ </table>

  @ <h1>Artifact Size Distribution Facts:</h1>
  @ <ol>
  @ <li><p>The largest %.2f(n50pct*100.0/nTotal)%% of artifacts
  largest_n_artifacts(n50pct);
  @ use 50%% of the total artifact space.
  @ <li><p>The largest 1%% of artifacts
  largest_n_artifacts((nTotal+99)/100);
  @ use %lld(sz1pct*100/sumCmpr)%% of the total artifact space.
  @ <li><p>The largest 10%% of artifacts
  largest_n_artifacts((nTotal+9)/10);
  @ use %lld(sz10pct*100/sumCmpr)%% of the total artifact space.
  @ <li><p>The largest 25%% of artifacts
  largest_n_artifacts((nTotal+4)/5);
  @ use %lld(sz25pct*100/sumCmpr)%% of the total artifact space.
  @ <li><p>The largest 50%% of artifacts
  largest_n_artifacts((nTotal+1)/2);
  @ use %lld(sz50pct*100/sumCmpr)%% of the total artifact space.
  @ </ol>

  @ <h1>Artifact Sizes By Type:</h1>
  db_prepare(&q,
    "SELECT atype, count(*), sum(isDelta), sum(szCmpr), sum(szExp)"
    "  FROM artstat GROUP BY 1"
    " UNION ALL "
    "SELECT 'ALL', count(*), sum(isDelta), sum(szCmpr), sum(szExp)"
    "  FROM artstat"
    " ORDER BY 4;"
  );
  @ <table class='sortable' border='1' \
  @ data-column-types='tkkkkk' data-init-sort='5'>
  @ <thead><tr>
  @ <th>Artifact Type</th>
  @ <th>Count</th>
  @ <th>Full-Text</th>
  @ <th>Delta</th>
  @ <th>Compressed Size</th>
  @ <th>Uncompressed Size</th>
  @ </tr></thead><tbody>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zType = db_column_text(&q, 0);
    int nTotal = db_column_int(&q, 1);
    int nDelta = db_column_int(&q, 2);
    int nFull = nTotal - nDelta;
    sqlite3_int64 szCmpr = db_column_int64(&q, 3);
    sqlite3_int64 szExp = db_column_int64(&q, 4);
    @ <tr><td>%h(zType)</td>
    @ <td data-sortkey='%08x(nTotal)' align='right'>%,d(nTotal)</td>
    @ <td data-sortkey='%08x(nFull)' align='right'>%,d(nFull)</td>
    @ <td data-sortkey='%08x(nDelta)' align='right'>%,d(nDelta)</td>
    @ <td data-sortkey='%016llx(szCmpr)' align='right'>%,lld(szCmpr)</td>
    @ <td data-sortkey='%016llx(szExp)' align='right'>%,lld(szExp)</td>
  }
  @ </tbody></table>
  db_finalize(&q);

  if( db_exists("SELECT 1 FROM artstat WHERE atype='unused'") ){
    @ <h1>Unused Artifacts:</h1>
    db_prepare(&q,
      "SELECT artstat.id, blob.uuid, user.login,"
      "       datetime(rcvfrom.mtime), rcvfrom.rcvid"
      "  FROM artstat JOIN blob ON artstat.id=blob.rid"
      "       LEFT JOIN rcvfrom USING(rcvid)"
      "       LEFT JOIN user USING(uid)"
      " WHERE atype='unused'"
    );
    @ <table class='sortable' border='1' \
    @ data-column-types='ntttt' data-init-sort='0'>
    @ <thead><tr>
    @ <th>RecordID</th>
    @ <th>Hash</th>
    @ <th>User</th>
    @ <th>Date</th>
    @ <th>RcvID</th>
    @ </tr></thead><tbody>
    while( db_step(&q)==SQLITE_ROW ){
      int rid = db_column_int(&q, 0);
      const char *zHash = db_column_text(&q, 1);
      const char *zUser = db_column_text(&q, 2);
      const char *zDate = db_column_text(&q, 3);
      int iRcvid = db_column_int(&q, 4);
      @ <tr><td>%d(rid)</td>
      @ <td>%z(href("%R/info/%!S",zHash))%S(zHash)</a></td>
      @ <td>%h(zUser)</td>
      @ <td>%h(zDate)</td>
      @ <td>%z(href("%R/rcvfrom?rcvid=%d",iRcvid))%d(iRcvid)</a></td></tr>
    }
    @ </tbody></table></div>
    db_finalize(&q);
  }
  style_table_sorter();
  style_finish_page();
}
Added src/statrep.c.








































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2013 Stephan Beal
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the /reports web page.
**
*/
#include "config.h"
#include <string.h>
#include <time.h>
#include "statrep.h"


/*
** Used by stats_report_xxxxx() to remember which type of events
** to show. Populated by stats_report_init_view() and holds the
** return value of that function.
*/
static int statsReportType = 0;

/*
** Set by stats_report_init_view() to one of the y=XXXX values
** accepted by /timeline?y=XXXX.
*/
static const char *statsReportTimelineYFlag = NULL;


/*
** Creates a TEMP VIEW named v_reports which is a wrapper around the
** EVENT table filtered on event.type. It looks for the request
** parameter 'type' (reminder: we "should" use 'y' for consistency
** with /timeline, but /reports uses 'y' for the year) and expects it
** to contain one of the conventional values from event.type or the
** value "all", which is treated as equivalent to "*".  By default (if
** no 'y' is specified), "*" is assumed (that is also the default for
** invalid/unknown filter values). That 'y' filter is the one used for
** the event list. Note that a filter of "*" or "all" is equivalent to
** querying against the full event table. The view, however, adds an
** abstraction level to simplify the implementation code for the
** various /reports pages.
**
** Returns one of: 'c', 'f', 'w', 'g', 't', 'e', representing the type of
** filter it applies, or '*' if no filter is applied (i.e. if "all" is
** used).
*/
static int stats_report_init_view(){
  const char *zType = PD("type","*");  /* analog to /timeline?y=... */
  const char *zRealType = NULL;        /* normalized form of zType */
  int rc = 0;                          /* result code */
  char *zTimeSpan;                     /* Time span */
  assert( !statsReportType && "Must not be called more than once." );
  switch( (zType && *zType) ? *zType : 0 ){
    case 'c':
    case 'C':
      zRealType = "ci";
      rc = *zRealType;
      break;
    case 'e':
    case 'E':
      zRealType = "e";
      rc = *zRealType;
      break;
    case 'f':
    case 'F':
      zRealType = "f";
      rc = *zRealType;
      break;
    case 'g':
    case 'G':
      zRealType = "g";
      rc = *zRealType;
      break;
    case 'm':
    case 'M':
      zRealType = "m";
      rc = *zRealType;
      break;
    case 'n':
    case 'N':
      zRealType = "n";
      rc = *zRealType;
      break;
    case 't':
    case 'T':
      zRealType = "t";
      rc = *zRealType;
      break;
    case 'w':
    case 'W':
      zRealType = "w";
      rc = *zRealType;
      break;
    default:
      rc = '*';
      break;
  }
  assert(0 != rc);
  if( P("from")!=0 && P("to")!=0 ){
    zTimeSpan = mprintf(
          " (event.mtime BETWEEN julianday(%Q) AND julianday(%Q))",
          P("from"), P("to"));
  }else{
    zTimeSpan = " 1";
  }
  if( zRealType==0 ){
    statsReportTimelineYFlag = "a";
    db_multi_exec("CREATE TEMP VIEW v_reports AS "
                  "SELECT * FROM event WHERE %s", zTimeSpan/*safe-for-%s*/);
  }else if( rc!='n' && rc!='m' ){
    statsReportTimelineYFlag = zRealType;
    db_multi_exec("CREATE TEMP VIEW v_reports AS "
                  "SELECT * FROM event WHERE (type GLOB %Q) AND %s",
                  zRealType, zTimeSpan/*safe-for-%s*/);
  }else{
    const char *zNot = rc=='n' ? "NOT" : "";
    statsReportTimelineYFlag = "ci";
    db_multi_exec(
      "CREATE TEMP VIEW v_reports AS "
      "SELECT * FROM event WHERE type='ci' AND %s"
      " AND objid %s IN (SELECT cid FROM plink WHERE NOT isprim)",
      zTimeSpan/*safe-for-%s*/, zNot/*safe-for-%s*/
    );
  }
  return statsReportType = rc;
}

/*
** Returns a string suitable (for a given value of suitable) for
** use in a label with the header of the /reports pages, dependent
** on the 'type' flag. See stats_report_init_view().
** The returned bytes are static.
*/
static const char *stats_report_label_for_type(){
  assert( statsReportType && "Must call stats_report_init_view() first." );
  switch( statsReportType ){
    case 'c':
      return "check-ins";
    case 'm':
      return "merge check-ins";
    case 'n':
      return "non-merge check-ins";
    case 'e':
      return "technotes";
    case 'f':
      return "forum posts";
    case 'w':
      return "wiki changes";
    case 't':
      return "ticket changes";
    case 'g':
      return "tag changes";
    default:
      return "all types";
  }
}


/*
** Implements the "byyear" and "bymonth" reports for /reports.
** If includeMonth is true then it generates the "bymonth" report,
** else the "byyear" report. If zUserName is not NULL then the report is
** restricted to events created by the named user account.
*/
static void stats_report_by_month_year(
  char includeMonth,        /* 0 for stats-by-year.  1 for stats-by-month */
  const char *zUserName     /* Only report events by this user */
){
  Stmt query = empty_Stmt;
  int nRowNumber = 0;                /* current TR number */
  int nEventTotal = 0;               /* Total event count */
  int rowClass = 0;                  /* counter for alternating
                                        row colors */
  const char *zTimeLabel = includeMonth ? "Year/Month" : "Year";
  char zPrevYear[5] = {0};           /* For keeping track of when
                                        we change years while looping */
  int nEventsPerYear = 0;            /* Total event count for the
                                        current year */
  char showYearTotal = 0;            /* Flag telling us when to show
                                        the per-year event totals */
  int nMaxEvents  = 1;               /* for calculating length of graph
                                        bars. */
  int iterations = 0;                /* number of weeks/months we iterate
                                        over */

  char *zCurrentTF;                  /* The timeframe in which 'now' lives */
  double rNowFraction;               /* Fraction of 'now' timeframe that has
                                        passed */
  int nTFChar;                       /* Prefix of date() for timeframe */

  nTFChar = includeMonth ? 7 : 4;
  stats_report_init_view();
  db_prepare(&query,
             "SELECT substr(date(mtime),1,%d) AS timeframe,"
             "       count(*) AS eventCount"
             "  FROM v_reports"
             " WHERE ifnull(coalesce(euser,user,'')=%Q,1)"
             " GROUP BY timeframe"
             " ORDER BY timeframe DESC",
             nTFChar, zUserName);
  @ <h1>Timeline Events (%s(stats_report_label_for_type()))
  @ by year%s(includeMonth ? "/month" : "")
  if( zUserName ){
    @ for user %h(zUserName)
  }
  @ </h1>
  @ <table border='0' cellpadding='2' cellspacing='0' \
  zCurrentTF = db_text(0, "SELECT substr(date(),1,%d)", nTFChar);
  if( !includeMonth ){
    @ class='statistics-report-table-events sortable' \
    @ data-column-types='tnx' data-init-sort='0'>
    style_table_sorter();
    rNowFraction = db_double(0.5,
       "SELECT (unixepoch() - unixepoch('now','start of year'))*1.0/"
       "        (unixepoch('now','start of year','+1 year') - "
       "         unixepoch('now','start of year'));");
  }else{
    @ class='statistics-report-table-events'>
    rNowFraction = db_double(0.5,
       "SELECT (unixepoch() - unixepoch('now','start of month'))*1.0/"
       "       (unixepoch('now','start of month','+1 month') - "
       "        unixepoch('now','start of month'));");
  }
  @ <thead>
  @ <th>%s(zTimeLabel)</th>
  @ <th>Events</th>
  @ <th width='90%%'><!-- relative commits graph --></th>
  @ </thead><tbody>
  /*
     Run the query twice. The first time we calculate the maximum
     number of events for a given row. Maybe someone with better SQL
     Fu can re-implement this with a single query.
  */
  while( SQLITE_ROW == db_step(&query) ){
    int nCount = db_column_int(&query, 1);
    if( strcmp(db_column_text(&query,0),zCurrentTF)==0
     && rNowFraction>0.05
    ){
      nCount = (int)(((double)nCount)/rNowFraction);
    }
    if(nCount>nMaxEvents){
      nMaxEvents = nCount;
    }
    ++iterations;
  }
  db_reset(&query);
  while( SQLITE_ROW == db_step(&query) ){
    const char *zTimeframe = db_column_text(&query, 0);
    const int nCount = db_column_int(&query, 1);
    int nSize = (nCount>0 && nMaxEvents>0)
      ? (int)(100 * nCount / nMaxEvents)
      : 1;
    showYearTotal = 0;
    if(!nSize) nSize = 1;
    if(includeMonth){
      /* For Month/year view, add a separator for each distinct year. */
      if(!*zPrevYear ||
         (0!=fossil_strncmp(zPrevYear,zTimeframe,4))){
        showYearTotal = *zPrevYear;
        if(showYearTotal){
          rowClass = ++nRowNumber % 2;
          @ <tr class='row%d(rowClass)'>
          @ <td></td>
          @ <td colspan='2'>Yearly total: %d(nEventsPerYear)</td>
          @</tr>
          showYearTotal = 0;
        }
        nEventsPerYear = 0;
        memcpy(zPrevYear,zTimeframe,4);
        rowClass = ++nRowNumber % 2;
        @ <tr class='row%d(rowClass)'>
        @ <th colspan='3' class='statistics-report-row-year'>%s(zPrevYear)</th>
        @ </tr>
     }
   }
   rowClass = ++nRowNumber % 2;
   nEventTotal += nCount;
   nEventsPerYear += nCount;
   @<tr class='row%d(rowClass)'>
   @ <td>
    if(includeMonth){
      cgi_printf("<a href='%R/timeline?"
                 "ym=%t&n=%d&y=%s",
                 zTimeframe, nCount,
                 statsReportTimelineYFlag );
      /* Reminder: n=nCount is not actually correct for bymonth unless
         that was the only user who caused events.
      */
      if( zUserName ){
        cgi_printf("&u=%t", zUserName);
      }
      cgi_printf("' target='_new'>%s</a>",zTimeframe);
    }else {
      cgi_printf("<a href='?view=byweek&y=%s&type=%c",
                 zTimeframe, (char)statsReportType);
      if( zUserName ){
        cgi_printf("&u=%t", zUserName);
      }
      cgi_printf("'>%s</a>", zTimeframe);
    }
    @ </td><td>%d(nCount)</td>
    @ <td style='white-space: nowrap;'>
    if( strcmp(zTimeframe, zCurrentTF)==0
     && rNowFraction>0.05
     && nCount>0
     && nMaxEvents>0
    ){
      /* If the timespan covered by this row contains "now", then project
      ** the number of changes until the completion of the timespan and
      ** show a dashed box of that projection. */
      int nExtra = (int)(((double)nCount)/rNowFraction) - nCount;
      int nXSize = (100 * nExtra)/nMaxEvents;
      @ <span class='statistics-report-graph-line' \
      @  style='display:inline-block;min-width:%d(nSize)%%;'>&nbsp;</span>\
      @ <span class='statistics-report-graph-extra' \
      @  style='display:inline-block;min-width:%d(nXSize)%%;'>&nbsp;</span>\
    }else{
      @ <div class='statistics-report-graph-line' \
      @  style='width:%d(nSize)%%;'>&nbsp;</div> \
    }
    @ </td>
    @ </tr>
    /*
      Potential improvement: calculate the min/max event counts and
      use percent-based graph bars.
    */
  }
  db_finalize(&query);
  if(includeMonth && !showYearTotal && *zPrevYear){
    /* Add final year total separator. */
    rowClass = ++nRowNumber % 2;
    @ <tr class='row%d(rowClass)'>
    @ <td></td>
    @ <td colspan='2'>Yearly total: %d(nEventsPerYear)</td>
    @</tr>
  }
  @ </tbody></table>
  if(nEventTotal){
    const char *zAvgLabel = includeMonth ? "month" : "year";
    int nAvg = iterations ? (nEventTotal/iterations) : 0;
    @ <br><div>Total events: %d(nEventTotal)
    @ <br>Average per active %s(zAvgLabel): %d(nAvg)
    @ </div>
  }
}

/*
** Implements the "byuser" view for /reports.
*/
static void stats_report_by_user(){
  Stmt query = empty_Stmt;
  int nRowNumber = 0;                /* current TR number */
  int rowClass = 0;                  /* counter for alternating
                                        row colors */
  int nMaxEvents = 1;                /* max number of events for
                                        all rows. */
  stats_report_init_view();
  @ <h1>Timeline Events
  @ (%s(stats_report_label_for_type())) by User</h1>
  db_multi_exec(
    "CREATE TEMP VIEW piechart(amt,label) AS"
    " SELECT count(*), ifnull(euser,user) FROM v_reports"
                         " GROUP BY ifnull(euser,user) ORDER BY count(*) DESC;"
  );
  if( db_int(0, "SELECT count(*) FROM piechart")>=2 ){
    @ <center><svg width=700 height=400>
    piechart_render(700, 400, PIE_OTHER|PIE_PERCENT);
    @ </svg></centre><hr>
  }
  style_table_sorter();
  @ <table class='statistics-report-table-events sortable' border='0' \
  @ cellpadding='2' cellspacing='0' data-column-types='tkx' data-init-sort='2'>
  @ <thead><tr>
  @ <th>User</th>
  @ <th>Events</th>
  @ <th width='90%%'><!-- relative commits graph --></th>
  @ </tr></thead><tbody>
  db_prepare(&query,
               "SELECT ifnull(euser,user), "
               "COUNT(*) AS eventCount "
               "FROM v_reports "
               "GROUP BY ifnull(euser,user) ORDER BY eventCount DESC");
  while( SQLITE_ROW == db_step(&query) ){
    const int nCount = db_column_int(&query, 1);
    if(nCount>nMaxEvents){
      nMaxEvents = nCount;
    }
  }
  db_reset(&query);
  while( SQLITE_ROW == db_step(&query) ){
    const char *zUser = db_column_text(&query, 0);
    const int nCount = db_column_int(&query, 1);
    char y = (char)statsReportType;
    int nSize = nCount
      ? (int)(100 * nCount / nMaxEvents)
      : 0;
    if(!nCount) continue /* arguable! Possible? */;
    else if(!nSize) nSize = 1;
    rowClass = ++nRowNumber % 2;
    @ <tr class='row%d(rowClass)'>
    @ <td>
    @ <a href="?view=bymonth&user=%h(zUser)&type=%c(y)">%h(zUser)</a>
    @ </td><td data-sortkey='%08x(-nCount)'>%d(nCount)</td>
    @ <td>
    @ <div class='statistics-report-graph-line'
    @  style='width:%d(nSize)%%;'>&nbsp;</div>
    @ </td>
    @</tr>
    /*
      Potential improvement: calculate the min/max event counts and
      use percent-based graph bars.
    */
  }
  @ </tbody></table>
  db_finalize(&query);
}

/*
** Implements the "byfile" view for /reports. If zUserName is not NULL then the
** report is restricted to events created by the named user account.
*/
static void stats_report_by_file(const char *zUserName){
  Stmt query;
  int mxEvent = 1;       /* max number of events across all rows */
  int nRowNumber = 0;

  db_multi_exec(
    "CREATE TEMP TABLE statrep(filename, cnt);"
    "INSERT INTO statrep(filename, cnt)"
    "  SELECT filename.name, count(distinct mlink.mid)"
    "    FROM filename, mlink, event"
    "   WHERE filename.fnid=mlink.fnid"
    "     AND mlink.mid=event.objid"
    "     AND ifnull(coalesce(euser,user,'')=%Q,1)"
    "   GROUP BY 1", zUserName
  );
  db_prepare(&query,
    "SELECT filename, cnt FROM statrep ORDER BY cnt DESC, filename /*sort*/"
  );
  mxEvent = db_int(1, "SELECT max(cnt) FROM statrep");
  @ <h1>Check-ins Per File
  if( zUserName ){
    @ for user %h(zUserName)
  }
  @ </h1>
  style_table_sorter();
  @ <table class='statistics-report-table-events sortable' border='0' \
  @ cellpadding='2' cellspacing='0' data-column-types='tNx' data-init-sort='2'>
  @ <thead><tr>
  @ <th>File</th>
  @ <th>Check-ins</th>
  @ <th width='90%%'><!-- relative commits graph --></th>
  @ </tr></thead><tbody>
  while( SQLITE_ROW == db_step(&query) ){
    const char *zFile = db_column_text(&query, 0);
    const int n = db_column_int(&query, 1);
    int sz;
    if( n<=0 ) continue;
    sz = (int)(100*n/mxEvent);
    if( sz==0 ) sz = 1;
    @<tr class='row%d(++nRowNumber%2)'>
    @ <td>%z(href("%R/finfo?name=%T",zFile))%h(zFile)</a></td>
    @ <td>%d(n)</td>
    @ <td>
    @ <div class='statistics-report-graph-line'
    @  style='width:%d(sz)%%;'>&nbsp;</div>
    @ </td>
    @</tr>
  }
  @ </tbody></table>
  db_finalize(&query);

}

/*
** Implements the "byweekday" view for /reports. If zUserName is not NULL then
** the report is restricted to events created by the named user account.
*/
static void stats_report_day_of_week(const char *zUserName){
  Stmt query = empty_Stmt;
  int nRowNumber = 0;                /* current TR number */
  int rowClass = 0;                  /* counter for alternating
                                        row colors */
  int nMaxEvents = 1;                /* max number of events for
                                        all rows. */
  static const char *const daysOfWeek[] = {
  "Sunday", "Monday", "Tuesday", "Wednesday",
  "Thursday", "Friday", "Saturday"
  };

  stats_report_init_view();
  db_prepare(&query,
               "SELECT cast(strftime('%%w', mtime) AS INTEGER) dow,"
               "       COUNT(*) AS eventCount"
               "  FROM v_reports"
               " WHERE ifnull(coalesce(euser,user,'')=%Q,1)"
               " GROUP BY dow ORDER BY dow", zUserName);
  @ <h1>Timeline Events (%h(stats_report_label_for_type())) by Day of the Week
  if( zUserName ){
    @ for user %h(zUserName)
  }
  @ </h1>
  db_multi_exec(
    "CREATE TEMP VIEW piechart(amt,label) AS"
    " SELECT count(*),"
    "   CASE cast(strftime('%%w', mtime) AS INT)"
    "    WHEN 0 THEN 'Sunday'"
    "    WHEN 1 THEN 'Monday'"
    "    WHEN 2 THEN 'Tuesday'"
    "    WHEN 3 THEN 'Wednesday'"
    "    WHEN 4 THEN 'Thursday'"
    "    WHEN 5 THEN 'Friday'"
    "    WHEN 6 THEN 'Saturday'"
    "    ELSE 'ERROR'"
    "   END"
    "  FROM v_reports"
    "  WHERE ifnull(coalesce(euser,user,'')=%Q,1)"
    "  GROUP BY 2 ORDER BY cast(strftime('%%w', mtime) AS INT);"
    , zUserName
  );
  if( db_int(0, "SELECT count(*) FROM piechart")>=2 ){
    @ <center><svg width=700 height=400>
    piechart_render(700, 400, PIE_OTHER|PIE_PERCENT);
    @ </svg></centre><hr>
  }
  style_table_sorter();
  @ <table class='statistics-report-table-events sortable' border='0' \
  @ cellpadding='2' cellspacing='0' data-column-types='ntnx' data-init-sort='1'>
  @ <thead><tr>
  @ <th>DoW</th>
  @ <th>Day</th>
  @ <th>Events</th>
  @ <th width='90%%'><!-- relative commits graph --></th>
  @ </tr></thead><tbody>
  while( SQLITE_ROW == db_step(&query) ){
    const int nCount = db_column_int(&query, 1);
    if(nCount>nMaxEvents){
      nMaxEvents = nCount;
    }
  }
  db_reset(&query);
  while( SQLITE_ROW == db_step(&query) ){
    const int dayNum =db_column_int(&query, 0);
    const int nCount = db_column_int(&query, 1);
    int nSize = nCount
      ? (int)(100 * nCount / nMaxEvents)
      : 0;
    if(!nCount) continue /* arguable! Possible? */;
    else if(!nSize) nSize = 1;
    rowClass = ++nRowNumber % 2;
    @<tr class='row%d(rowClass)'>
    @ <td>%d(dayNum)</td>
    @ <td>%s(daysOfWeek[dayNum])</td>
    @ <td>%d(nCount)</td>
    @ <td>
    @ <div class='statistics-report-graph-line'
    @  style='width:%d(nSize)%%;'>&nbsp;</div>
    @ </td>
    @</tr>
  }
  @ </tbody></table>
  db_finalize(&query);
}

/*
** Implements the "byhour" view for /reports. If zUserName is not NULL
** then the report is restricted to events created by the named user
** account.
*/
static void stats_report_hour_of_day(const char *zUserName){
  Stmt query = empty_Stmt;
  int nRowNumber = 0;                /* current TR number */
  int rowClass = 0;                  /* counter for alternating
                                        row colors */
  int nMaxEvents = 1;                /* max number of events for
                                        all rows. */

  stats_report_init_view();
  db_prepare(&query,
               "SELECT cast(strftime('%%H', mtime) AS INTEGER) hod,"
               "       COUNT(*) AS eventCount"
               "  FROM v_reports"
               " WHERE ifnull(coalesce(euser,user,'')=%Q,1)"
               " GROUP BY hod ORDER BY hod", zUserName);
  @ <h1>Timeline Events (%h(stats_report_label_for_type())) by Hour of Day
  if( zUserName ){
    @ for user %h(zUserName)
  }
  @ </h1>
  db_multi_exec(
    "CREATE TEMP VIEW piechart(amt,label) AS"
    " SELECT count(*), strftime('%%H', mtime) hod"
    "  FROM v_reports"
    "  WHERE ifnull(coalesce(euser,user,'')=%Q,1)"
    "  GROUP BY 2 ORDER BY hod;",
    zUserName
  );
  if( db_int(0, "SELECT count(*) FROM piechart")>=2 ){
    @ <center><svg width=700 height=400>
    piechart_render(700, 400, PIE_OTHER|PIE_PERCENT);
    @ </svg></centre><hr>
  }
  style_table_sorter();
  @ <table class='statistics-report-table-events sortable' border='0' \
  @ cellpadding='2' cellspacing='0' data-column-types='nnx' data-init-sort='1'>
  @ <thead><tr>
  @ <th>Hour</th>
  @ <th>Events</th>
  @ <th width='90%%'><!-- relative commits graph --></th>
  @ </tr></thead><tbody>
  while( SQLITE_ROW == db_step(&query) ){
    const int nCount = db_column_int(&query, 1);
    if(nCount>nMaxEvents){
      nMaxEvents = nCount;
    }
  }
  db_reset(&query);
  while( SQLITE_ROW == db_step(&query) ){
    const int hourNum =db_column_int(&query, 0);
    const int nCount = db_column_int(&query, 1);
    int nSize = nCount
      ? (int)(100 * nCount / nMaxEvents)
      : 0;
    if(!nCount) continue /* arguable! Possible? */;
    else if(!nSize) nSize = 1;
    rowClass = ++nRowNumber % 2;
    @<tr class='row%d(rowClass)'>
    @ <td>%d(hourNum)</td>
    @ <td>%d(nCount)</td>
    @ <td>
    @ <div class='statistics-report-graph-line'
    @  style='width:%d(nSize)%%;'>&nbsp;</div>
    @ </td>
    @</tr>
  }
  @ </tbody></table>
  db_finalize(&query);
}


/*
** Helper for stats_report_by_month_year(), which generates a list of
** week numbers.  The "y" query parameter is the year in format YYYY.
** If zUserName is not NULL then the report is restricted to events
** created by the named user account.
*/
static void stats_report_year_weeks(const char *zUserName){
  const char *zYear = P("y");        /* Year for which report shown */
  Stmt q;
  int nMaxEvents = 1;                /* max number of events for
                                        all rows. */
  int iterations = 0;                /* # of active time periods. */
  int rowCount = 0;
  int total = 0;
  char *zCurrentWeek;                /* Current week number */
  double rNowFraction = 0.0;         /* Fraction of current week that has
                                     ** passed */

  stats_report_init_view();
  style_submenu_sql("y", "Year:",
     "WITH RECURSIVE a(b) AS ("
     "  SELECT substr(date('now'),1,4) UNION ALL"
     "  SELECT b-1 FROM a"
     "   WHERE b>0+(SELECT substr(date(min(mtime)),1,4) FROM event)"
     ") SELECT b, b FROM a ORDER BY b DESC");
  if( zYear==0 || strlen(zYear)!=4 ){
    zYear = db_text("1970","SELECT substr(date('now'),1,4);");
  }
  cgi_printf("<br>\n");
  db_prepare(&q,
             "SELECT DISTINCT strftime('%%W',mtime) AS wk, "
             "       count(*) AS n "
             "  FROM v_reports "
             " WHERE %Q=substr(date(mtime),1,4) "
             "   AND mtime < current_timestamp "
             "   AND ifnull(coalesce(euser,user,'')=%Q,1)"
             " GROUP BY wk ORDER BY wk DESC", zYear, zUserName);
  @ <h1>Timeline events (%h(stats_report_label_for_type()))
  @ for the calendar weeks of %h(zYear)
  if( zUserName ){
    @  for user %h(zUserName)
  }
  @ </h1>
  zCurrentWeek = db_text(0,
      "SELECT strftime('%%W','now') WHERE date() LIKE '%q%%'",
      zYear);
  if( zCurrentWeek ){
    rNowFraction = db_double(0.5,
      "SELECT (unixepoch()-unixepoch('now','weekday 0','-7 days'))/604800.0;");
  }
    style_table_sorter();
  cgi_printf("<table class='statistics-report-table-events sortable' "
              "border='0' cellpadding='2' width='100%%' "
             "cellspacing='0' data-column-types='tnx' data-init-sort='0'>\n");
  cgi_printf("<thead><tr>"
             "<th>Week</th>"
             "<th>Events</th>"
             "<th width='90%%'><!-- relative commits graph --></th>"
             "</tr></thead>\n"
             "<tbody>\n");
  while( SQLITE_ROW == db_step(&q) ){
    int nCount = db_column_int(&q, 1);
    if( zCurrentWeek!=0
     && strcmp(db_column_text(&q,0),zCurrentWeek)==0
     && rNowFraction>0.05
    ){
      nCount = (int)(((double)nCount)/rNowFraction);
    }
    if(nCount>nMaxEvents){
      nMaxEvents = nCount;
    }
    ++iterations;
  }
  db_reset(&q);
  while( SQLITE_ROW == db_step(&q) ){
    const char *zWeek = db_column_text(&q,0);
    const int nCount = db_column_int(&q,1);
    int nSize = (nCount>0 && nMaxEvents>0)
      ? (int)(100 * nCount / nMaxEvents)
      : 0;
    if(!nSize) nSize = 1;
    total += nCount;
    cgi_printf("<tr class='row%d'>", ++rowCount % 2 );
    cgi_printf("<td><a href='%R/timeline?yw=%t-%s&n=%d&y=%s",
               zYear, zWeek, nCount,
               statsReportTimelineYFlag);
    if( zUserName ){
      cgi_printf("&u=%t",zUserName);
    }
    cgi_printf("'>%s</a></td>",zWeek);

    cgi_printf("<td>%d</td>",nCount);
    cgi_printf("<td style='white-space: nowrap;'>");
    if( nCount ){
      if( zCurrentWeek!=0
      && strcmp(zWeek, zCurrentWeek)==0
      && rNowFraction>0.05
      && nMaxEvents>0
      ){
        /* If the covered covered by this row contains "now", then project
        ** the number of changes until the completion of the week and
        ** show a dashed box of that projection. */
        int nExtra = (int)(((double)nCount)/rNowFraction) - nCount;
        int nXSize = (100 * nExtra)/nMaxEvents;
        @ <span class='statistics-report-graph-line' \
        @  style='display:inline-block;min-width:%d(nSize)%%;'>&nbsp;</span>\
        @ <span class='statistics-report-graph-extra' \
        @  style='display:inline-block;min-width:%d(nXSize)%%;'>&nbsp;</span>\
      }else{
        @ <div class='statistics-report-graph-line' \
        @  style='width:%d(nSize)%%;'>&nbsp;</div> \
      }
    }
    cgi_printf("</td></tr>\n");
  }
  db_finalize(&q);
  cgi_printf("</tbody></table>");
  if(total){
    int nAvg = iterations ? (total/iterations) : 0;
    cgi_printf("<br><div>Total events: %d<br>"
               "Average per active week: %d</div>",
               total, nAvg);
  }
}


/*
** Generate a report that shows the most recent change for each user.
*/
static void stats_report_last_change(void){
  Stmt s;
  double rNow;
  char *zBaseUrl;

  stats_report_init_view();
  style_table_sorter();
  @ <h1>Event Summary
  @ (%s(stats_report_label_for_type())) by User</h1>
  @ <table border=1  class='statistics-report-table-events sortable' \
  @ cellpadding=2 cellspacing=0 data-column-types='tNK' data-init-sort='3'>
  @ <thead><tr>
  @ <th>User<th>Total Changes<th>Last Change</tr></thead>
  @ <tbody>
  zBaseUrl = mprintf("%R/timeline?y=%t&u=", PD("type","ci"));
  db_prepare(&s,
    "SELECT coalesce(euser,user),"
    "       count(*),"
    "       max(mtime)"
    "  FROM v_reports"
    " GROUP BY 1"
    " ORDER BY 3 DESC"
  );
  rNow = db_double(0.0, "SELECT julianday('now');");
  while( db_step(&s)==SQLITE_ROW ){
    const char *zUser = db_column_text(&s, 0);
    int cnt = db_column_int(&s, 1);
    double rMTime = db_column_double(&s,2);
    char *zAge = human_readable_age(rNow - rMTime);
    @ <tr>
    @ <td><a href='%s(zBaseUrl)%t(zUser)'>%h(zUser)</a>
    @ <td>%d(cnt)
    @ <td data-sortkey='%f(rMTime)' style='white-space:nowrap'>%s(zAge?zAge:"")
    @ </tr>
    fossil_free(zAge);
  }
  @ </tbody></table>
  db_finalize(&s);
}


/* Report types
*/
#define RPT_BYFILE    1
#define RPT_BYMONTH   2
#define RPT_BYUSER    3
#define RPT_BYWEEK    4
#define RPT_BYWEEKDAY 5
#define RPT_BYYEAR    6
#define RPT_LASTCHNG  7  /* Last change made for each user */
#define RPT_BYHOUR    8  /* hour-of-day */
#define RPT_NONE      0  /* None of the above */

/*
** WEBPAGE: reports
**
** Shows activity reports for the repository.
**
** Query Parameters:
**
**   view=REPORT_NAME  Valid REPORT_NAME values:
**                        * byyear
**                        * bymonth
**                        * byweek
**                        * byweekday
**                        * byhour
**                        * byuser
**                        * byfile
**                        * lastchng
**   user=NAME         Restricts statistics to the given user
**   type=TYPE         Restricts the report to a specific event type:
**                        * all (everything),
**                        * ci  (check-in)
**                        * m   (merge check-in),
**                        * n   (non-merge check-in)
**                        * f   (forum post)
**                        * w   (wiki page change)
**                        * t   (ticket change)
**                        * g   (tag added or removed)
**                     Defaulting to all event types.
**
** The view-specific query parameters include:
**
** view=byweek:
**
**   y=YYYY            The year to report (default is the server's
**                     current year).
*/
void stats_report_page(){
  const char *zView = P("view");     /* Which view/report to show. */
  int eType = RPT_NONE;              /* Numeric code for view/report to show */
  int i;                             /* Loop counter */
  const char *zUserName;             /* Name of user */
  const char *azView[16];            /* Drop-down menu of view types */
  static const struct {
    const char *zName;  /* Name of view= screen type */
    const char *zVal;   /* Value of view= query parameter */
    int eType;          /* Corresponding RPT_* define */
  } aViewType[] = {
     {  "File Changes","byfile",    RPT_BYFILE    },
     {  "Last Change", "lastchng",  RPT_LASTCHNG  },
     {  "By Month",    "bymonth",   RPT_BYMONTH   },
     {  "By User",     "byuser",    RPT_BYUSER    },
     {  "By Week",     "byweek",    RPT_BYWEEK    },
     {  "By Weekday",  "byweekday", RPT_BYWEEKDAY },
     {  "By Year",     "byyear",    RPT_BYYEAR    },
     {  "By Hour",     "byhour",    RPT_BYHOUR    },
  };
  static const char *const azType[] = {
     "a",  "All Changes",
     "ci", "Check-ins",
     "f",  "Forum Posts",
     "m",  "Merge check-ins",
     "n",  "Non-merge check-ins",
     "g",  "Tags",
     "e",  "Tech Notes",
     "t",  "Tickets",
     "w",  "Wiki"
  };

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  zUserName = P("user");
  if( zUserName==0 ) zUserName = P("u");
  if( zUserName && zUserName[0]==0 ) zUserName = 0;
  if( zView==0 ){
    zView = "byuser";
    cgi_replace_query_parameter("view","byuser");
  }
  for(i=0; i<count(aViewType); i++){
    if( fossil_strcmp(zView, aViewType[i].zVal)==0 ){
      eType = aViewType[i].eType;
      break;
    }
  }
  cgi_check_for_malice();
  if( eType!=RPT_NONE ){
    int nView = 0;                     /* Slots used in azView[] */
    for(i=0; i<count(aViewType); i++){
      azView[nView++] = aViewType[i].zVal;
      azView[nView++] = aViewType[i].zName;
    }
    if( eType!=RPT_BYFILE ){
      style_submenu_multichoice("type", count(azType)/2, azType, 0);
    }
    style_submenu_multichoice("view", nView/2, azView, 0);
    if( eType!=RPT_BYUSER && eType!=RPT_LASTCHNG ){
      style_submenu_sql("user","User:",
         "SELECT '', 'All Users' UNION ALL "
         "SELECT x, x FROM ("
         "  SELECT DISTINCT trim(coalesce(euser,user)) AS x FROM event %s"
         "  ORDER BY 1 COLLATE nocase) WHERE x!=''",
         eType==RPT_BYFILE ? "WHERE type='ci'" : ""
      );
    }
  }
  style_submenu_element("Stats", "%R/stat");
  style_header("Activity Reports");
  switch( eType ){
    case RPT_BYYEAR:
      stats_report_by_month_year(0, zUserName);
      break;
    case RPT_BYMONTH:
      stats_report_by_month_year(1, zUserName);
      break;
    case RPT_BYWEEK:
      stats_report_year_weeks(zUserName);
      break;
    default:
    case RPT_BYUSER:
      stats_report_by_user();
      break;
    case RPT_BYWEEKDAY:
      stats_report_day_of_week(zUserName);
      break;
    case RPT_BYFILE:
      stats_report_by_file(zUserName);
      break;
    case RPT_BYHOUR:
      stats_report_hour_of_day(zUserName);
      break;
    case RPT_LASTCHNG:
      stats_report_last_change();
      break;
  }
  style_finish_page();
}
Added src/style.admin_log.css.






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/* This file is just to demonstrate/test page-specific CSS. Using
   the browser dev tools, select any link, "inspect" it, and edit
   this style. */
a{
  font-size: inherit;
}
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**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the basic web page look and feel.
**
*/
#include "VERSION.h"
#include "config.h"
#include "style.h"


/*
** Elements of the submenu are collected into the following
** structure and displayed below the main menu by style_header().
** structure and displayed below the main menu.
**
** Populate these structure with calls to
**
** Populate this structure with calls to style_submenu_element()
** prior to calling style_header().
**      style_submenu_element()
**      style_submenu_entry()
**      style_submenu_checkbox()
**      style_submenu_binary()
**      style_submenu_multichoice()
**      style_submenu_sql()
**
** prior to calling style_finish_page().  The style_finish_page() routine
** will generate the appropriate HTML text just below the main
** menu.
*/
static struct Submenu {
  const char *zLabel;
  const char *zTitle;
  const char *zLink;
} aSubmenu[30];
static int nSubmenu = 0;
  const char *zLabel;        /* Button label */
  const char *zLink;         /* Jump to this link when button is pressed */
} aSubmenu[30];
static int nSubmenu = 0;     /* Number of buttons */
static struct SubmenuCtrl {
  const char *zName;           /* Form query parameter */
  const char *zLabel;          /* Label.  Might be NULL for FF_MULTI */
  unsigned char eType;         /* FF_ENTRY, FF_MULTI, FF_CHECKBOX */
  unsigned char eVisible;      /* STYLE_NORMAL or STYLE_DISABLED */
  short int iSize;             /* Width for FF_ENTRY.  Count for FF_MULTI */
  const char *const *azChoice; /* value/display pairs for FF_MULTI */
  const char *zFalse;          /* FF_BINARY label when false */
  const char *zJS;             /* Javascript to run on toggle */
} aSubmenuCtrl[20];
static int nSubmenuCtrl = 0;
#define FF_ENTRY    1          /* Text entry box */
#define FF_MULTI    2          /* Combobox.  Multiple choices. */
#define FF_BINARY   3          /* Control for binary query parameter */
#define FF_CHECKBOX 4          /* Check-box */

#if INTERFACE
#define STYLE_NORMAL   0       /* Normal display of control */
#define STYLE_DISABLED 1       /* Control is disabled */
#endif /* INTERFACE */

/*
** Remember that the header has been generated.  The footer is omitted
** if an error occurs before the header.
*/
static int headerHasBeenGenerated = 0;

/*
** remember, if a sidebox was used
*/
static int sideboxUsed = 0;

/*
** Ad-unit styles.
*/
static unsigned adUnitFlags = 0;

/*
** Submenu disable flag
*/
static int submenuEnable = 1;

/*
** Flags for various javascript files needed prior to </body>
*/
static int needHrefJs = 0;      /* href.js */

/*
** Extra JS added to the end of the file.
*/
static Blob blobOnLoad = BLOB_INITIALIZER;

/*
** Generate and return an anchor tag like this:
**
**        <a href="URL">
**  or    <a id="ID">
**
** The form of the anchor tag is determined by the g.jsHref
** and g.perm.Hyperlink variables.
**
**   g.perm.Hyperlink  g.jsHref        Returned anchor format
**   ----------------  --------        ------------------------
**          0             0              (empty string)
**          0             1              (empty string)
**          1             0              <a href="URL">
**          1             1              <a data-href="URL">
**
** No anchor tag is generated if g.perm.Hyperlink is false.
** The href="URL" form is used if g.jsHref is false.
** If g.jsHref is true then the data-href="URL" and
** href="/honeypot" is generated and javascript is added to the footer
** to cause data-href values to be inserted into href
** after the page has loaded. The use of the data-href="URL" form
** instead of href="URL" is a defense against bots.
**
** If the user lacks the Hyperlink (h) property and the "auto-hyperlink"
** setting is true, then g.perm.Hyperlink is changed from 0 to 1 and
** g.jsHref is set to 1 by login_check_credentials().  Thus
** the g.perm.Hyperlink property will be true even if the user does not
** have the "h" privilege if the "auto-hyperlink" setting is true.
**
**  User has "h"  auto-hyperlink      g.perm.Hyperlink  g.jsHref
**  ------------  --------------      ----------------  ---------------------
**        0             0                    0                    0
**        1             0                    1                    0
**        0             1                    1                    1
**        1             1                    1                    0
**
** So, in other words, tracing input configuration to final actions we have:
**
**  User has "h"  auto-hyperlink      Returned anchor format
**  ------------  --------------      ----------------------
**        0             0             (empty string)
**        1             0             <a href="URL">
**        0             1             <a data-href="URL">
**        1             1             <a href="URL">
**
** The name of these routines are deliberately kept short so that can be
** easily used within @-lines.  Example:
**
**      @ %z(href("%R/artifact/%s",zUuid))%h(zFN)</a>
**
** Note %z format.  The string returned by this function is always
** obtained from fossil_malloc() so rendering it with %z will reclaim
** that memory space.
**
** There are three versions of this routine:
**
**    (1)   href() does a plain hyperlink
**    (2)   xhref() adds extra attribute text
**    (3)   chref() adds a class name
**
** g.perm.Hyperlink is true if the user has the Hyperlink (h) property.
** Most logged in users should have this property, since we can assume
** that a logged in user is not a bot.  Only "nobody" lacks g.perm.Hyperlink,
** typically.
*/
char *xhref(const char *zExtra, const char *zFormat, ...){
  char *zUrl;
  va_list ap;
  if( !g.perm.Hyperlink ) return fossil_strdup("");
  va_start(ap, zFormat);
  zUrl = vmprintf(zFormat, ap);
  va_end(ap);
  if( !g.jsHref ){
    char *zHUrl;
    if( zExtra ){
      zHUrl = mprintf("<a %s href=\"%h\">", zExtra, zUrl);
    }else{
      zHUrl = mprintf("<a href=\"%h\">", zUrl);
    }
    fossil_free(zUrl);
    return zHUrl;
  }
  needHrefJs = 1;
  if( zExtra==0 ){
    return mprintf("<a data-href='%z' href='%R/honeypot'>", zUrl);
  }else{
    return mprintf("<a %s data-href='%z' href='%R/honeypot'>",
                   zExtra, zUrl);
  }
}
char *chref(const char *zExtra, const char *zFormat, ...){
  char *zUrl;
  va_list ap;
  if( !g.perm.Hyperlink ) return fossil_strdup("");
  va_start(ap, zFormat);
  zUrl = vmprintf(zFormat, ap);
  va_end(ap);
  if( !g.jsHref ){
    char *zHUrl = mprintf("<a class=\"%s\" href=\"%h\">", zExtra, zUrl);
    fossil_free(zUrl);
    return zHUrl;
  }
  needHrefJs = 1;
  return mprintf("<a class='%s' data-href='%z' href='%R/honeypot'>",
                 zExtra, zUrl);
}
char *href(const char *zFormat, ...){
  char *zUrl;
  va_list ap;
  if( !g.perm.Hyperlink ) return fossil_strdup("");
  va_start(ap, zFormat);
  zUrl = vmprintf(zFormat, ap);
  va_end(ap);
  if( !g.jsHref ){
    char *zHUrl = mprintf("<a href=\"%h\">", zUrl);
    fossil_free(zUrl);
    return zHUrl;
  }
  needHrefJs = 1;
  return mprintf("<a data-href='%s' href='%R/honeypot'>",
                  zUrl);
}

/*
** Generate <form method="post" action=ARG>.  The ARG value is determined
** by the arguments.
**
** As a defense against robots, the action=ARG might instead by data-action=ARG
** and javascript (href.js) added to the page so that the data-action= is
** changed into action= after the page loads.  Whether or not this happens
** depends on if the user has the "h" privilege and whether or not the
** auto-hyperlink setting is on.  These setings determine the values of
** variables g.perm.Hyperlink and g.jsHref.
**
**    User has "h"  auto-hyperlink      g.perm.Hyperlink  g.jsHref
**    ------------  --------------      ----------------  --------
**  1:      0             0                    0             0
**  2:      1             0                    1             0
**  3:      0             1                    1             1
**  4:      1             1                    1             0
**
** The data-action=ARG form is used for cases 1 and 3.  In case 1, the href.js
** javascript is omitted and so the form is effectively disabled.
*/
void form_begin(const char *zOtherArgs, const char *zAction, ...){
  char *zLink;
  va_list ap;
  if( zOtherArgs==0 ) zOtherArgs = "";
  va_start(ap, zAction);
  zLink = vmprintf(zAction, ap);
  va_end(ap);
  if( g.perm.Hyperlink ){
    @ <form method="POST" action="%z(zLink)" %s(zOtherArgs)>
  }else{
    needHrefJs = 1;
    @ <form method="POST" data-action='%s(zLink)' action='%R/login' \
    @ %s(zOtherArgs)>
  }
  login_insert_csrf_secret();
}

/*
** Add a new element to the submenu
*/
void style_submenu_element(
  const char *zLabel,
  const char *zTitle,
  const char *zLink,
  ...
){
  va_list ap;
  assert( nSubmenu < sizeof(aSubmenu)/sizeof(aSubmenu[0]) );
  assert( nSubmenu < count(aSubmenu) );
  aSubmenu[nSubmenu].zLabel = zLabel;
  aSubmenu[nSubmenu].zTitle = zTitle;
  va_start(ap, zLink);
  aSubmenu[nSubmenu].zLink = vmprintf(zLink, ap);
  va_end(ap);
  nSubmenu++;
}
void style_submenu_entry(
  const char *zName,       /* Query parameter name */
  const char *zLabel,      /* Label before the entry box */
  int iSize,               /* Size of the entry box */
  int eVisible             /* Visible or disabled */
){
  assert( nSubmenuCtrl < count(aSubmenuCtrl) );
  aSubmenuCtrl[nSubmenuCtrl].zName = zName;
  aSubmenuCtrl[nSubmenuCtrl].zLabel = zLabel;
  aSubmenuCtrl[nSubmenuCtrl].iSize = iSize;
  aSubmenuCtrl[nSubmenuCtrl].eVisible = eVisible;
  aSubmenuCtrl[nSubmenuCtrl].eType = FF_ENTRY;
  nSubmenuCtrl++;
}
void style_submenu_checkbox(
  const char *zName,       /* Query parameter name */
  const char *zLabel,      /* Label to display after the checkbox */
  int eVisible,            /* Visible or disabled */
  const char *zJS          /* Optional javascript to run on toggle */
){
  assert( nSubmenuCtrl < count(aSubmenuCtrl) );
  aSubmenuCtrl[nSubmenuCtrl].zName = zName;
  aSubmenuCtrl[nSubmenuCtrl].zLabel = zLabel;
  aSubmenuCtrl[nSubmenuCtrl].eVisible = eVisible;
  aSubmenuCtrl[nSubmenuCtrl].zJS = zJS;
  aSubmenuCtrl[nSubmenuCtrl].eType = FF_CHECKBOX;
  nSubmenuCtrl++;
}
void style_submenu_binary(
  const char *zName,       /* Query parameter name */
  const char *zTrue,       /* Label to show when parameter is true */
  const char *zFalse,      /* Label to show when the parameter is false */
  int eVisible             /* Visible or disabled */
){
  assert( nSubmenuCtrl < count(aSubmenuCtrl) );
  aSubmenuCtrl[nSubmenuCtrl].zName = zName;
  aSubmenuCtrl[nSubmenuCtrl].zLabel = zTrue;
  aSubmenuCtrl[nSubmenuCtrl].zFalse = zFalse;
  aSubmenuCtrl[nSubmenuCtrl].eVisible = eVisible;
  aSubmenuCtrl[nSubmenuCtrl].eType = FF_BINARY;
  nSubmenuCtrl++;
}
void style_submenu_multichoice(
  const char *zName,           /* Query parameter name */
  int nChoice,                 /* Number of options */
  const char *const *azChoice, /* value/display pairs.  2*nChoice entries */
  int eVisible                 /* Visible or disabled */
){
  assert( nSubmenuCtrl < count(aSubmenuCtrl) );
  aSubmenuCtrl[nSubmenuCtrl].zName = zName;
  aSubmenuCtrl[nSubmenuCtrl].iSize = nChoice;
  aSubmenuCtrl[nSubmenuCtrl].azChoice = azChoice;
  aSubmenuCtrl[nSubmenuCtrl].eVisible = eVisible;
  aSubmenuCtrl[nSubmenuCtrl].eType = FF_MULTI;
  nSubmenuCtrl++;
}
void style_submenu_sql(
  const char *zName,       /* Query parameter name */
  const char *zLabel,      /* Label on the control */
  const char *zFormat,     /* Format string for SQL command for choices */
  ...                      /* Arguments to the format string */
){
  Stmt q;
  int n = 0;
  int nAlloc = 0;
  char **az = 0;
  va_list ap;

  va_start(ap, zFormat);
  db_vprepare(&q, 0, zFormat, ap);
  va_end(ap);
  while( SQLITE_ROW==db_step(&q) ){
    if( n+2>=nAlloc ){
      nAlloc += nAlloc + 20;
      az = fossil_realloc(az, sizeof(char*)*nAlloc);
    }
    az[n++] = fossil_strdup(db_column_text(&q,0));
    az[n++] = fossil_strdup(db_column_text(&q,1));
  }
  db_finalize(&q);
  if( n>0 ){
    aSubmenuCtrl[nSubmenuCtrl].zName = zName;
    aSubmenuCtrl[nSubmenuCtrl].zLabel = zLabel;
    aSubmenuCtrl[nSubmenuCtrl].iSize = n/2;
    aSubmenuCtrl[nSubmenuCtrl].azChoice = (const char *const *)az;
    aSubmenuCtrl[nSubmenuCtrl].eVisible = STYLE_NORMAL;
    aSubmenuCtrl[nSubmenuCtrl].eType = FF_MULTI;
    nSubmenuCtrl++;
  }
}

/*
** Disable or enable the submenu
*/
void style_submenu_enable(int onOff){
  submenuEnable = onOff;
}


/*
** Compare two submenu items for sorting purposes
*/
static int submenuCompare(const void *a, const void *b){
  const struct Submenu *A = (const struct Submenu*)a;
  const struct Submenu *B = (const struct Submenu*)b;
  return strcmp(A->zLabel, B->zLabel);
  return fossil_strcmp(A->zLabel, B->zLabel);
}

/* Use this for the $current_page variable if it is not NULL.  If it
** is NULL then use g.zPath.
*/
static char *local_zCurrentPage = 0;

/*
** Set the desired $current_page to something other than g.zPath
*/
void style_set_current_page(const char *zFormat, ...){
  fossil_free(local_zCurrentPage);
  if( zFormat==0 ){
    local_zCurrentPage = 0;
  }else{
    va_list ap;
    va_start(ap, zFormat);
    local_zCurrentPage = vmprintf(zFormat, ap);
    va_end(ap);
  }
}

/*
** Create a TH1 variable containing the URL for the stylesheet.
**
** The name of the new variable will be "stylesheet_url".
**
** The value will be a URL for accessing the appropriate stylesheet.
** This URL will include query parameters such as "id=" and "once&skin="
** to cause the correct stylesheet to be loaded after a skin change
** or after a change to the stylesheet.
*/
static void stylesheet_url_var(void){
  char *zBuiltin;              /* Auxiliary page-specific CSS page */
  Blob url;                    /* The URL */
  const char * zPage = local_zCurrentPage ? local_zCurrentPage : g.zPath;

  /* Initialize the URL to its baseline */
  url = empty_blob;
  blob_appendf(&url, "%R/style.css");

  /* If page-specific CSS exists for the current page, then append
  ** the pathname for the page-specific CSS.  The default CSS is
  **
  **     /style.css
  **
  ** But for the "/wikiedit" page (to name but one example), we
  ** append a path as follows:
  **
  **     /style.css/wikiedit
  **
  ** The /style.css page (implemented below) will detect this extra "wikiedit"
  ** path information and include the page-specific CSS along with the
  ** default CSS when it delivers the page.
  */
  zBuiltin = mprintf("style.%s.css", zPage);
  if( builtin_file(zBuiltin,0)!=0 ){
    blob_appendf(&url, "/%s", zPage);
  }
  fossil_free(zBuiltin);

  /* Add query parameters that will change whenever the skin changes
  ** or after any updates to the CSS files
  */
  blob_appendf(&url, "?id=%x", skin_id("css"));
  if( P("once")!=0 && P("skin")!=0 ){
    blob_appendf(&url, "&skin=%s&once", skin_in_use());
  }

  /* Generate the CSS URL variable */
  Th_Store("stylesheet_url", blob_str(&url));
  blob_reset(&url);
}

/*
** Create a TH1 variable containing the URL for the specified image.
** The resulting variable name will be of the form $[zImageName]_image_url.
** The value will be a URL that includes an id= query parameter that
** changes if the underlying resource changes or if a different skin
** is selected.
*/
static void image_url_var(const char *zImageName){
  char *zVarName;   /* Name of the new TH1 variable */
  char *zResource;  /* Name of CONFIG entry holding content */
  char *zUrl;       /* The URL */

  zResource = mprintf("%s-image", zImageName);
  zUrl = mprintf("%R/%s?id=%x", zImageName, skin_id(zResource));
  free(zResource);
  zVarName = mprintf("%s_image_url", zImageName);
  Th_Store(zVarName, zUrl);
  free(zVarName);
  free(zUrl);
}

/*
** Output TEXT with a click-to-copy button next to it. Loads the copybtn.js
** Javascript module, and generates HTML elements with the following IDs:
**
**    TARGETID:       The <span> wrapper around TEXT.
**    copy-TARGETID:  The <span> for the copy button.
**
** If the FLIPPED argument is non-zero, the copy button is displayed after TEXT.
**
** The COPYLENGTH argument defines the length of the substring of TEXT copied to
** clipboard:
**
**    <= 0:   No limit (default if the argument is omitted).
**    >= 3:   Truncate TEXT after COPYLENGTH (single-byte) characters.
**       1:   Use the "hash-digits" setting as the limit.
**       2:   Use the length appropriate for URLs as the limit (defined at
**            compile-time by FOSSIL_HASH_DIGITS_URL, defaults to 16).
*/
char *style_copy_button(
  int bOutputCGI,         /* Don't return result, but send to cgi_printf(). */
  const char *zTargetId,  /* The TARGETID argument. */
  int bFlipped,           /* The FLIPPED argument. */
  int cchLength,          /* The COPYLENGTH argument. */
  const char *zTextFmt,   /* Formatting of the TEXT argument (htmlized). */
  ...                     /* Formatting parameters of the TEXT argument. */
){
  va_list ap;
  char *zText;
  char *zResult = 0;
  va_start(ap,zTextFmt);
  zText = vmprintf(zTextFmt/*works-like:?*/,ap);
  va_end(ap);
  if( cchLength==1 ) cchLength = hash_digits(0);
  else if( cchLength==2 ) cchLength = hash_digits(1);
  if( !bFlipped ){
    const char *zBtnFmt =
      "<span class=\"nobr\">"
      "<span "
      "class=\"copy-button\" "
      "id=\"copy-%h\" "
      "data-copytarget=\"%h\" "
      "data-copylength=\"%d\">"
      "</span>"
      "<span id=\"%h\">"
      "%s"
      "</span>"
      "</span>";
    if( bOutputCGI ){
      cgi_printf(
                  zBtnFmt/*works-like:"%h%h%d%h%s"*/,
                  zTargetId,zTargetId,cchLength,zTargetId,zText);
    }else{
      zResult = mprintf(
                  zBtnFmt/*works-like:"%h%h%d%h%s"*/,
                  zTargetId,zTargetId,cchLength,zTargetId,zText);
    }
  }else{
    const char *zBtnFmt =
      "<span class=\"nobr\">"
      "<span id=\"%h\">"
      "%s"
      "</span>"
      "<span "
      "class=\"copy-button copy-button-flipped\" "
      "id=\"copy-%h\" "
      "data-copytarget=\"%h\" "
      "data-copylength=\"%d\">"
      "</span>"
      "</span>";
    if( bOutputCGI ){
      cgi_printf(
                  zBtnFmt/*works-like:"%h%s%h%h%d"*/,
                  zTargetId,zText,zTargetId,zTargetId,cchLength);
    }else{
      zResult = mprintf(
                  zBtnFmt/*works-like:"%h%s%h%h%d"*/,
                  zTargetId,zText,zTargetId,zTargetId,cchLength);
    }
  }
  free(zText);
  builtin_request_js("copybtn.js");
  return zResult;
}

/*
** Return a random nonce that is stored in static space.  For a particular
** run, the same nonce is always returned.
*/
char *style_nonce(void){
  static char zNonce[52];
  if( zNonce[0]==0 ){
    unsigned char zSeed[24];
    sqlite3_randomness(24, zSeed);
    encode16(zSeed,(unsigned char*)zNonce,24);
  }
  return zNonce;
}

/*
** Return the default Content Security Policy (CSP) string.
** If the toHeader argument is true, then also add the
** CSP to the HTTP reply header.
**
** The CSP comes from the "default-csp" setting if it exists and
** is non-empty.  If that setting is an empty string, then the following
** default is used instead:
**
**     default-src 'self' data:;
**     script-src 'self' 'nonce-$nonce';
**     style-src 'self' 'unsafe-inline';
**     img-src * data:;
**
** The text '$nonce' is replaced by style_nonce() if and whereever it
** occurs in the input string.
**
** The string returned is obtained from fossil_malloc() and
** should be released by the caller.
*/
char *style_csp(int toHeader){
  static const char zBackupCSP[] =
   "default-src 'self' data:; "
   "script-src 'self' 'nonce-$nonce'; "
   "style-src 'self' 'unsafe-inline'; "
   "img-src * data:";
  const char *zFormat;
  Blob csp;
  char *zNonce;
  char *zCsp;
  int i;
  zFormat = db_get("default-csp",0);
  if( zFormat==0 || zFormat[0]==0 ){
    zFormat = zBackupCSP;
  }
  blob_init(&csp, 0, 0);
  while( zFormat[0] && (zNonce = strstr(zFormat,"$nonce"))!=0 ){
    blob_append(&csp, zFormat, (int)(zNonce - zFormat));
    blob_append(&csp, style_nonce(), -1);
    zFormat = zNonce + 6;
  }
  blob_append(&csp, zFormat, -1);
  zCsp = blob_str(&csp);
  /* No whitespace other than actual space characters allowed in the CSP
  ** string.  See https://fossil-scm.org/forum/forumpost/d29e3af43c */
  for(i=0; zCsp[i]; i++){ if( fossil_isspace(zCsp[i]) ) zCsp[i] = ' '; }
  if( toHeader ){
    cgi_printf_header("Content-Security-Policy: %s\r\n", zCsp);
  }
  return zCsp;
}

/*
** Default HTML page header text through <body>.  If the repository-specific
** header template lacks a <body> tag, then all of the following is
** prepended.
*/
static const char zDfltHeader[] =
@ <html>
@ <head>
@ <meta charset="UTF-8">
@ <base href="$baseurl/$current_page">
@ <meta http-equiv="Content-Security-Policy" content="$default_csp">
@ <meta name="viewport" content="width=device-width, initial-scale=1.0">
@ <title>$<project_name>: $<title></title>
@ <link rel="alternate" type="application/rss+xml" title="RSS Feed" \
@  href="$home/timeline.rss">
@ <link rel="stylesheet" href="$stylesheet_url" type="text/css">
@ </head>
@ <body class="$current_feature rpage-$requested_page cpage-$canonical_page">
;

/*
** Returns the default page header.
*/
const char *get_default_header(){
  return zDfltHeader;
}

/*
** The default TCL list that defines the main menu.
*/
static const char zDfltMainMenu[] =
@ Home      /home        *              {}
@ Timeline  /timeline    {o r j}        {}
@ Files     /dir?ci=tip  oh             desktoponly
@ Branches  /brlist      o              wideonly
@ Tags      /taglist     o              wideonly
@ Forum     /forum       {@2 3 4 5 6}   wideonly
@ Chat      /chat        C              wideonly
@ Tickets   /ticket      r              wideonly
@ Wiki      /wiki        j              wideonly
@ Admin     /setup       {a s}          desktoponly
@ Logout    /logout      L              wideonly
@ Login     /login       !L             wideonly
;

/*
** Return the default menu
*/
const char *style_default_mainmenu(void){
  return zDfltMainMenu;
}

/*
** Given a URL path, extract the first element as a "feature" name,
** used as the <body class="FEATURE"> value by default, though
** later-running code may override this, typically to group multiple
** Fossil UI URLs into a single "feature" so you can have per-feature
** CSS rules.
**
** For example, "body.forum div.markdown blockquote" targets only
** block quotes made in forum posts, leaving other Markdown quotes
** alone.  Because feature class "forum" groups /forummain, /forumpost,
** and /forume2, it works across all renderings of Markdown to HTML
** within the Fossil forum feature.
*/
static const char* feature_from_page_path(const char *zPath){
  const char* zSlash = strchr(zPath, '/');
  if (zSlash) {
    return fossil_strndup(zPath, zSlash - zPath);
  } else {
    return zPath;
  }
}

/*
** Override the value of the TH1 variable current_feature, its default
** set by feature_from_page_path().  We do not call this from
** style_init_th1_vars() because that uses Th_MaybeStore() instead to
** allow webpage implementations to call this before style_header()
** to override that "maybe" default with something better.
*/
void style_set_current_feature(const char* zFeature){
  Th_Store("current_feature", zFeature);
}

/*
** Returns the current mainmenu value from either the --mainmenu flag
** (handled by the server/ui/cgi commands), the "mainmenu" config
** setting, or style_default_mainmenu(), in that order, returning the
** first of those which is defined.
*/
const char *style_get_mainmenu(){
  static const char *zMenu = 0;
  if(!zMenu){
    if(g.zMainMenuFile){
      Blob b = empty_blob;
      blob_read_from_file(&b, g.zMainMenuFile, ExtFILE);
      zMenu = blob_str(&b);
    }else{
      zMenu = db_get("mainmenu", style_default_mainmenu());
    }
  }
  return zMenu;
}

/*
** Initialize all the default TH1 variables
*/
static void style_init_th1_vars(const char *zTitle){
  const char *zNonce = style_nonce();
  char *zDfltCsp;

  zDfltCsp = style_csp(1);
  /*
  ** Do not overwrite the TH1 variable "default_csp" if it exists, as this
  ** allows it to be properly overridden via the TH1 setup script (i.e. it
  ** is evaluated before the header is rendered).
  */
  Th_MaybeStore("default_csp", zDfltCsp);
  fossil_free(zDfltCsp);
  Th_Store("nonce", zNonce);
  Th_Store("project_name", db_get("project-name","Unnamed Fossil Project"));
  Th_Store("project_description", db_get("project-description",""));
  if( zTitle ) Th_Store("title", zTitle);
  Th_Store("baseurl", g.zBaseURL);
  Th_Store("secureurl", fossil_wants_https(1)? g.zHttpsURL: g.zBaseURL);
  Th_Store("home", g.zTop);
  Th_Store("index_page", db_get("index-page","/home"));
  if( local_zCurrentPage==0 ) style_set_current_page("%T", g.zPath);
  Th_Store("current_page", local_zCurrentPage);
  if( g.zPath ){                /* store the first segment of a path; */
    char *pSlash = strchr(g.zPath,'/');
    if( pSlash ) *pSlash = 0;   /* make a temporary cut if necessary  */
    Th_Store("requested_page", escape_quotes(g.zPath));
    if( pSlash ) *pSlash = '/';
  }else{
    Th_Store("requested_page", "");
  }
  Th_Store("canonical_page", escape_quotes(g.zPhase+1));
  Th_Store("csrf_token", g.zCsrfToken);
  Th_Store("release_version", RELEASE_VERSION);
  Th_Store("manifest_version", MANIFEST_VERSION);
  Th_Store("manifest_date", MANIFEST_DATE);
  Th_Store("compiler_name", COMPILER_NAME);
  Th_Store("mainmenu", style_get_mainmenu());
  stylesheet_url_var();
  image_url_var("logo");
  image_url_var("background");
  if( !login_is_nobody() ){
    Th_Store("login", g.zLogin);
  }
  Th_MaybeStore("current_feature", feature_from_page_path(local_zCurrentPage) );
  if( g.ftntsIssues[0] || g.ftntsIssues[1] ||
      g.ftntsIssues[2] || g.ftntsIssues[3] ){
    char buf[80];
    sqlite3_snprintf(sizeof(buf), buf, "%i %i %i %i", g.ftntsIssues[0],
                     g.ftntsIssues[1], g.ftntsIssues[2], g.ftntsIssues[3]);
    Th_Store("footnotes_issues_counters", buf);
  }
}

/*
** Draw the header.
*/
void style_header(const char *zTitleFormat, ...){
  va_list ap;
  char *zTitle;
  const char *zHeader = db_get("header", (char*)zDefaultHeader);  
  const char *zHeader = skin_get("header");
  login_check_credentials();

  va_start(ap, zTitleFormat);
  zTitle = vmprintf(zTitleFormat, ap);
  va_end(ap);
  

  cgi_destination(CGI_HEADER);
  cgi_printf("%s",
     "<!DOCTYPE html PUBLIC \"-//W3C/DTD XHTML 1.0 Strict//EN\""

  @ <!DOCTYPE html>
     " \"http://www.x3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">");
  
  if( g.thTrace ) Th_Trace("BEGIN_HEADER<br />\n", -1);

  if( g.thTrace ) Th_Trace("BEGIN_HEADER<br>\n", -1);

  /* Generate the header up through the main menu */
  Th_Store("project_name", db_get("project-name","Unnamed Fossil Project"));
  Th_Store("title", zTitle);
  style_init_th1_vars(zTitle);
  Th_Store("baseurl", g.zBaseURL);
  Th_Store("index_page", db_get("index-page","/home"));
  Th_Store("current_page", g.zPath);
  Th_Store("manifest_version", MANIFEST_VERSION);
  Th_Store("manifest_date", MANIFEST_DATE);
  if( g.zLogin ){
    Th_Store("login", g.zLogin);
  if( sqlite3_strlike("%<body%", zHeader, 0)!=0 ){
    Th_Render(zDfltHeader);
  }
  if( g.thTrace ) Th_Trace("BEGIN_HEADER_SCRIPT<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_HEADER_SCRIPT<br>\n", -1);
  Th_Render(zHeader);
  if( g.thTrace ) Th_Trace("END_HEADER<br />\n", -1);
  if( g.thTrace ) Th_Trace("END_HEADER<br>\n", -1);
  Th_Unstore("title");   /* Avoid collisions with ticket field names */
  cgi_destination(CGI_BODY);
  g.cgiOutput = 1;
  headerHasBeenGenerated = 1;
  sideboxUsed = 0;
  if( g.perm.Debug && P("showqp") ){
    @ <div class="debug">
    cgi_print_all(0, 0, 0);
    @ </div>
}

  }
}

#if INTERFACE
/* Allowed parameters for style_adunit() */
#define ADUNIT_OFF        0x0001       /* Do not allow ads on this page */
#define ADUNIT_RIGHT_OK   0x0002       /* Right-side vertical ads ok here */
#endif

/*
** Various page implementations can invoke this interface to let the
** style manager know what kinds of ads are appropriate for this page.
*/
void style_adunit_config(unsigned int mFlags){
  adUnitFlags = mFlags;
}
** Draw the footer at the bottom of the page.

/*
** Return the text of an ad-unit, if one should be rendered.  Return
** NULL if no ad-unit is desired.
**
** The *pAdFlag value might be set to ADUNIT_RIGHT_OK if this is
** a right-hand vertical ad.
*/
static const char *style_adunit_text(unsigned int *pAdFlag){
  const char *zAd = 0;
  *pAdFlag = 0;
  if( adUnitFlags & ADUNIT_OFF ) return 0;  /* Disallow ads on this page */
  if( db_get_boolean("adunit-disable",0) ) return 0;
  if( g.perm.Admin && db_get_boolean("adunit-omit-if-admin",0) ){
    return 0;
  }
  if( !login_is_nobody()
   && fossil_strcmp(g.zLogin,"anonymous")!=0
   && db_get_boolean("adunit-omit-if-user",0)
  ){
    return 0;
  }
  if( (adUnitFlags & ADUNIT_RIGHT_OK)!=0
   && !fossil_all_whitespace(zAd = db_get("adunit-right", 0))
   && !cgi_body_contains("<table")
  ){
    *pAdFlag = ADUNIT_RIGHT_OK;
    return zAd;
  }else if( !fossil_all_whitespace(zAd = db_get("adunit",0)) ){
    return zAd;
  }
  return 0;
}

/*
** Indicate that the table-sorting javascript is needed.
*/
void style_table_sorter(void){
  builtin_request_js("sorttable.js");
}

/*
** Generate code to load all required javascript files.
*/
static void style_load_all_js_files(void){
  if( needHrefJs && g.perm.Hyperlink ){
    int nDelay = db_get_int("auto-hyperlink-delay",0);
    int bMouseover = db_get_boolean("auto-hyperlink-mouseover",0)
                   && sqlite3_strglob("*Android*",PD("HTTP_USER_AGENT",""));
    @ <script id='href-data' type='text/json'>\
    @ {"delay":%d(nDelay),"mouseover":%d(bMouseover)}</script>
  }
  @ <script nonce="%h(style_nonce())">/* style.c:%d(__LINE__) */
  @ function debugMsg(msg){
  @ var n = document.getElementById("debugMsg");
  @ if(n){n.textContent=msg;}
  @ }
  if( needHrefJs && g.perm.Hyperlink ){
    @ /* href.js */
    cgi_append_content(builtin_text("href.js"),-1);
  }
  if( blob_size(&blobOnLoad)>0 ){
    @ window.onload = function(){
    cgi_append_content(blob_buffer(&blobOnLoad), blob_size(&blobOnLoad));
    cgi_append_content("\n}\n", -1);
  }
  @ </script>
  builtin_fulfill_js_requests();
}

/*
** Transorm input string into a token that is safe for inclusion into
** class attribute. Digits and low-case letter are passed unchanged,
** upper-case letters are transformed to low-case, everything else is
** tranformed into hyphens; consequtive and pending hyphens are squeezed.
** If result does not fit into szOut chars then it is truncated.
** Result is always terminated with null.
*/
void style_derive_classname(const char *zIn, char *zOut, int szOut){
  assert(  zOut );
  assert( szOut>0 );
  if( zIn ){
    int n = 0;  /* number of chars written to zOut */
    char c;
    for(--szOut; (c=*zIn) && n<szOut; zIn++) {
      if( ('a'<=c && c<='z') || ('0'<=c && c<='9') ){
        *zOut = c;
      }else if( 'A'<=c && c<='Z' ){
        *zOut = c - 'A' + 'a';
      }else{
        if( n==0 || zOut[-1]=='-' ) continue;
        *zOut = '-';
      }
      zOut++;
      n++;
    }
    if( n && zOut[-1]=='-' ) zOut--;
  }
  *zOut = 0;
}

/*
** Invoke this routine after all of the content for a webpage has been
** generated.  This routine should be called once for every webpage, at
** or near the end of page generation.  This routine does the following:
**
**   *  Populates the header of the page, including setting up appropriate
**      submenu elements.  The header generation is deferred until this point
**      so that we know that all style_submenu_element() and similar have
**      been received.
**
**   *  Finalizes the page content.
**
**   *  Appends the footer.
*/
void style_footer(void){
void style_finish_page(){
  const char *zFooter;
  const char *zAd = 0;
  unsigned int mAdFlags = 0;

  if( !headerHasBeenGenerated ) return;
  

  /* Go back and put the submenu at the top of the page.  We delay the
  ** creation of the submenu until the end so that we can add elements
  ** to the submenu while generating page text.
  */
  cgi_destination(CGI_HEADER);
  if( nSubmenu>0 ){
  if( submenuEnable && nSubmenu+nSubmenuCtrl>0 ){
    int i;
    char zClass[32]; /* reduced form of the main attribute */
    if( nSubmenuCtrl ){
      @ <form id='f01' method='GET' action='%R/%s(g.zPath)'>
      @ <input type='hidden' name='udc' value='1'>
      cgi_tag_query_parameter("udc");
    }
    @ <div class="submenu">
    if( nSubmenu>0 ){
    qsort(aSubmenu, nSubmenu, sizeof(aSubmenu[0]), submenuCompare);
    for(i=0; i<nSubmenu; i++){
      struct Submenu *p = &aSubmenu[i];
      if( p->zLink==0 ){
        @ <span class="label">%h(p->zLabel)</span>
      }else{
        @ <a class="label" href="%s(p->zLink)">%h(p->zLabel)</a>
      qsort(aSubmenu, nSubmenu, sizeof(aSubmenu[0]), submenuCompare);
      for(i=0; i<nSubmenu; i++){
        struct Submenu *p = &aSubmenu[i];
        style_derive_classname(p->zLabel, zClass, sizeof zClass);
        /* switching away from the %h formatting below might be dangerous
        ** because some places use %s to compose zLabel and zLink;
        ** e.g. /rptview page and the submenuCmd() function.
        ** "sml" stands for submenu link.
        */
        if( p->zLink==0 ){
          @ <span class="label sml-%s(zClass)">%h(p->zLabel)</span>
        }else{
          @ <a class="label sml-%s(zClass)" href="%h(p->zLink)">%h(p->zLabel)</a>
        }
      }
    }
    fossil_strcpy(zClass,"smc-");   /* common prefix for submenu controls */
    for(i=0; i<nSubmenuCtrl; i++){
      const char *zQPN = aSubmenuCtrl[i].zName;
      const char *zDisabled = "";
      const char *zXtraClass = "";
      if( aSubmenuCtrl[i].eVisible & STYLE_DISABLED ){
        zDisabled = " disabled";
      }else if( zQPN ){
        cgi_tag_query_parameter(zQPN);
      }
      style_derive_classname(zQPN, zClass+4, sizeof(zClass)-4);
      switch( aSubmenuCtrl[i].eType ){
        case FF_ENTRY:
          @ <span class='submenuctrl%s(zXtraClass) %s(zClass)'>\
          @ &nbsp;%h(aSubmenuCtrl[i].zLabel)\
          @ <input type='text' name='%s(zQPN)' value='%h(PD(zQPN, ""))' \
          if( aSubmenuCtrl[i].iSize<0 ){
            @ size='%d(-aSubmenuCtrl[i].iSize)' \
          }else if( aSubmenuCtrl[i].iSize>0 ){
            @ size='%d(aSubmenuCtrl[i].iSize)' \
            @ maxlength='%d(aSubmenuCtrl[i].iSize)' \
          }
          @ id='submenuctrl-%d(i)'%s(zDisabled)></span>
          break;
        case FF_MULTI: {
          int j;
          const char *zVal = P(zQPN);
          if( zXtraClass[0] ){
            @ <span class='%s(zXtraClass+1) %s(zClass)'>
          }
          if( aSubmenuCtrl[i].zLabel ){
            @ &nbsp;%h(aSubmenuCtrl[i].zLabel)\
          }
          @ <select class='submenuctrl %s(zClass)' size='1' name='%s(zQPN)' \
          @ id='submenuctrl-%d(i)'%s(zDisabled)>
          for(j=0; j<aSubmenuCtrl[i].iSize*2; j+=2){
            const char *zQPV = aSubmenuCtrl[i].azChoice[j];
            @ <option value='%h(zQPV)'\
            if( fossil_strcmp(zVal, zQPV)==0 ){
              @  selected\
            }
            @ >%h(aSubmenuCtrl[i].azChoice[j+1])</option>
          }
          @ </select>
          if( zXtraClass[0] ){
            @ </span>
          }
          break;
        }
        case FF_BINARY: {
          int isTrue = PB(zQPN);
          @ <select class='submenuctrl%s(zXtraClass)' size='1' \
          @ name='%s(zQPN)' id='submenuctrl-%d(i)'%s(zDisabled)>
          @ <option value='1'\
          if( isTrue ){
            @  selected\
          }
          @ >%h(aSubmenuCtrl[i].zLabel)</option>
          @ <option value='0'\
          if( !isTrue ){
            @  selected\
          }
          @ >%h(aSubmenuCtrl[i].zFalse)</option>
          @ </select>
          break;
        }
        case FF_CHECKBOX: {
          @ <label class='submenuctrl submenuckbox%s(zXtraClass) %s(zClass)'>\
          @ <input type='checkbox' name='%s(zQPN)' id='submenuctrl-%d(i)' \
          if( PB(zQPN) ){
            @ checked \
          }
          if( aSubmenuCtrl[i].zJS ){
            @ data-ctrl='%s(aSubmenuCtrl[i].zJS)'%s(zDisabled)>\
          }else{
            @ %s(zDisabled)>\
          }
          @ %h(aSubmenuCtrl[i].zLabel)</label>
          break;
        }
      }
    }
    @ </div>
    if( nSubmenuCtrl ){
      cgi_query_parameters_to_hidden();
      cgi_tag_query_parameter(0);
      @ </form>
      builtin_request_js("menu.js");
  }
  @ <div class="content">
    }
  }

  zAd = style_adunit_text(&mAdFlags);
  if( (mAdFlags & ADUNIT_RIGHT_OK)!=0  ){
    @ <div class="content adunit_right_container">
    @ <div class="adunit_right">
    cgi_append_content(zAd, -1);
    @ </div>
  }else if( zAd ){
    @ <div class="adunit_banner">
    cgi_append_content(zAd, -1);
    @ </div>
  }

  @ <div class="content"><span id="debugMsg"></span>
  cgi_destination(CGI_BODY);

  if( sideboxUsed ){
    @ <div class="endContent"></div>
  }
  @ </div>

  /* Put the footer at the bottom of the page.
  /* Put the footer at the bottom of the page. */
  */
  @ </div><br clear="both"/>
  zFooter = db_get("footer", (char*)zDefaultFooter);
  if( g.thTrace ) Th_Trace("BEGIN_FOOTER<br />\n", -1);
  zFooter = skin_get("footer");
  if( sqlite3_strlike("%</body>%", zFooter, 0)==0 ){
    style_load_all_js_files();
  }
  if( g.thTrace ) Th_Trace("BEGIN_FOOTER<br>\n", -1);
  Th_Render(zFooter);
  if( g.thTrace ) Th_Trace("END_FOOTER<br />\n", -1);
  
  if( g.thTrace ) Th_Trace("END_FOOTER<br>\n", -1);

  /* Render trace log if TH1 tracing is enabled. */
  if( g.thTrace ){
    cgi_append_content("<font color=\"red\"><hr>\n", -1);
    cgi_append_content("<span class=\"thTrace\"><hr>\n", -1);
    cgi_append_content(blob_str(&g.thLog), blob_size(&g.thLog));
    cgi_append_content("</font>\n", -1);
    cgi_append_content("</span>\n", -1);
  }

  /* Add document end mark if it was not in the footer */
  if( sqlite3_strlike("%</body>%", zFooter, 0)!=0 ){
    style_load_all_js_files();
    @ </body>
    @ </html>
  }
  /* Update the user display prefs cookie if it was modified */
  cookie_render();
}

/*
** Begin a side-box on the right-hand side of a page.  The title and
** the width of the box are given as arguments.  The width is usually
** a percentage of total screen width.
*/
void style_sidebox_begin(const char *zTitle, const char *zWidth){
  sideboxUsed = 1;
  @ <table width="%s(zWidth)" align="right" border="1" cellpadding=5
  @ <div class="sidebox" style="width:%s(zWidth)">
  @  vspace=5 hspace=5>
  @ <tr><td>
  @ <b>%h(zTitle)</b>
  @ <div class="sideboxTitle">%h(zTitle)</div>
}

/* End the side-box
*/
void style_sidebox_end(void){
  @ </td></tr></table>
  @ </div>
}

/* @-comment: // */
/*
** Search string zCss for zSelector.
** The default page header.
**
** Return true if found.  Return false if not found
*/
static int containsSelector(const char *zCss, const char *zSelector){
const char zDefaultHeader[] = 
@ <html>
  const char *z;
  int n;
@ <head>
@ <title>$<project_name>: $<title></title>
@ <link rel="alternate" type="application/rss+xml" title="RSS Feed"
  int selectorLen = (int)strlen(zSelector);
@       href="$baseurl/timeline.rss">
@ <link rel="stylesheet" href="$baseurl/style.css?default" type="text/css"
@       media="screen">
@ </head>
@ <body>
@ <div class="header">
@   <div class="logo">
@     <img src="$baseurl/logo" alt="logo">
@     <br><nobr>$<project_name></nobr>
@   </div>
@   <div class="title">$<title></div>
@   <div class="status"><nobr><th1>
@      if {[info exists login]} {
@        puts "Logged in as $login"
@      } else {
@        puts "Not logged in"
@      }
@   </th1></nobr></div>
@ </div>
@ <div class="mainmenu"><th1>
@ html "<a href='$baseurl$index_page'>Home</a> "

  for(z=zCss; *z; z+=selectorLen){
    z = strstr(z, zSelector);
    if( z==0 ) return 0;
    if( z!=zCss ){
      for( n=-1; z+n!=zCss && fossil_isspace(z[n]); n--);
      if( z+n!=zCss && z[n]!=',' && z[n]!= '}' && z[n]!='/' ) continue;
@ if {[anycap jor]} {
@   html "<a href='$baseurl/timeline'>Timeline</a> "
@ }
    }
    for( n=selectorLen; z[n] && fossil_isspace(z[n]); n++ );
    if( z[n]==',' || z[n]=='{' || z[n]=='/' ) return 1;
@ if {[hascap oh]} {
@   html "<a href='$baseurl/dir?ci=tip'>Files</a> "
@ }
  }
  return 0;
@ if {[hascap o]} {
@   html "<a href='$baseurl/leaves'>Leaves</a> "
@   html "<a href='$baseurl/brlist'>Branches</a> "
@   html "<a href='$baseurl/taglist'>Tags</a> "
@ }
@ if {[hascap r]} {
@   html "<a href='$baseurl/reportlist'>Tickets</a> "
@ }
@ if {[hascap j]} {
@   html "<a href='$baseurl/wiki'>Wiki</a> "
@ }
@ if {[hascap s]} {
@   html "<a href='$baseurl/setup'>Admin</a> "
@ } elseif {[hascap a]} {
}
@   html "<a href='$baseurl/setup_ulist'>Users</a> "
@ }
@ if {[info exists login]} {
@   html "<a href='$baseurl/login'>Logout</a> "
@ } else {
@   html "<a href='$baseurl/login'>Login</a> "
@ }
@ </th1></div>
;


/*
** The default page footer
*/
** COMMAND: test-contains-selector
**
const char zDefaultFooter[] = 
@ <div class="footer">
@ Fossil version $manifest_version $manifest_date
** Usage: %fossil test-contains-selector FILENAME SELECTOR
@ </div>
@ </body></html>
;

/*
** The default Cascading Style Sheet.
**
** Determine if the CSS stylesheet FILENAME contains SELECTOR.
**
** Note that as of 2020-05-28, the default rules are always emitted,
** so the containsSelector() logic is no longer applied when emitting
** style.css. It is unclear whether this test command is now obsolete
** or whether it may still serve a purpose.
*/
void contains_selector_cmd(void){
  int found;
const char zDefaultCSS[] = 
  char *zSelector;
@ /* General settings for the entire page */
@ body {
  Blob css;
  if( g.argc!=4 ) usage("FILENAME SELECTOR");
  blob_read_from_file(&css, g.argv[2], ExtFILE);
  zSelector = g.argv[3];
  found = containsSelector(blob_str(&css), zSelector);
  fossil_print("%s %s\n", zSelector, found ? "found" : "not found");
  blob_reset(&css);
}
@   margin: 0ex 1ex;
@   padding: 0px;
@   background-color: white;
@   font-family: sans-serif;
@ }
@
@ /* The project logo in the upper left-hand corner of each page */
@ div.logo {

/*
** WEBPAGE: script.js
**
** Return the "Javascript" content for the current skin (if there is any)
*/
void page_script_js(void){
  const char *zScript = skin_get("js");
@   display: table-cell;
@   text-align: center;
@   vertical-align: bottom;
@   font-weight: bold;
  if( P("test") ){
    /* Render the script as plain-text for testing purposes, if the "test"
    ** query parameter is present */
    cgi_set_content_type("text/plain");
@   color: #558195;
@ }
  }else{
@
@ /* The page title centered at the top of each page */
@ div.title {
@   display: table-cell;
@   font-size: 2em;
    /* Default behavior is to return javascript */
    cgi_set_content_type("text/javascript");
@   font-weight: bold;
@   text-align: left;
@   padding: 0 0 0 1em;
@   color: #558195;
@   vertical-align: bottom;
@   width: 100%;
  }
  style_init_th1_vars(0);
@ }
@
  Th_Render(zScript?zScript:"");
}
@ /* The login status message in the top right-hand corner */
@ div.status {
@   display: table-cell;
@   text-align: right;
@   vertical-align: bottom;
@   color: #558195;
@   font-size: 0.8em;
@   font-weight: bold;
@ }
@
@ /* The header across the top of the page */

/*
** Check for "name" or "page" query parameters on an /style.css
** page request.  If present, then page-specific CSS is requested,
@ div.header {
@   display: table;
** so add that CSS to pOut.  If the "name" and "page" query parameters
** are omitted, then pOut is unchnaged.
*/
static void page_style_css_append_page_style(Blob *pOut){
  const char *zPage = PD("name",P("page"));
  char * zFile;
@   width: 100%;
@ }
  int nFile = 0;
@
@ /* The main menu bar that appears at the top of the page beneath
@ ** the header */
  const char *zBuiltin;
@ div.mainmenu {
@   padding: 5px 10px 5px 10px;
@   font-size: 0.9em;
@   font-weight: bold;
@   text-align: center;
@   letter-spacing: 1px;
@   background-color: #558195;
@   color: white;
@ }
@
@ /* The submenu bar that *sometimes* appears below the main menu */

  if(zPage==0 || zPage[0]==0){
    return;
@ div.submenu {
@   padding: 3px 10px 3px 0px;
@   font-size: 0.9em;
@   text-align: center;
  }
  zFile = mprintf("style.%s.css", zPage);
  zBuiltin = (const char *)builtin_file(zFile, &nFile);
  if(nFile>0){
@   background-color: #456878;
@   color: white;
@ }
@ div.mainmenu a, div.mainmenu a:visited, div.submenu a, div.submenu a:visited {
@   padding: 3px 10px 3px 10px;
@   color: white;
@   text-decoration: none;
    blob_appendf(pOut,
      "\n/***********************************************************\n"
      "** Page-specific CSS for \"%s\"\n"
      "***********************************************************/\n",
      zPage);
    blob_append(pOut, zBuiltin, nFile);
    fossil_free(zFile);
@ }
@ div.mainmenu a:hover, div.submenu a:hover {
@   color: #558195;
@   background-color: white;
    return;
  }
  /* Potential TODO: check for aliases/page groups. e.g. group all
  ** /forumXYZ CSS into one file, all /setupXYZ into another, etc. As
@ }
@
@ /* All page content from the bottom of the menu or submenu down to
@ ** the footer */
  ** of this writing, doing so would only shave a few kb from
  ** default.css. */
@ div.content {
@   padding: 0ex 1ex 0ex 2ex;
@ }
@
@ /* Some pages have section dividers */
  fossil_free(zFile);
}
@ div.section {
@   margin-bottom: 0px;
@   margin-top: 1em;
@   padding: 1px 1px 1px 1px;
@   font-size: 1.2em;
@   font-weight: bold;
@   background-color: #558195;
@   color: white;
@ }
@

@ /* The "Date" that occurs on the left hand side of timelines */
@ div.divider {
@   background: #a1c4d4;
@   border: 2px #558195 solid;
/*
** WEBPAGE: style.css loadavg-exempt
**
** Return the style sheet.   The style sheet is assemblied from
** multiple sources, in order:
@   font-size: 1em; font-weight: normal;
@   padding: .25em;
@   margin: .2em 0 .2em 0;
@   float: left;
@   clear: left;
@ }
@
@ /* The footer at the very bottom of the page */
**
**    (1)   The built-in "default.css" style sheet containing basic defaults.
**
**    (2)   The page-specific style sheet taken from the built-in
@ div.footer {
@   font-size: 0.8em;
@   margin-top: 12px;
@   padding: 5px 10px 5px 10px;
@   text-align: right;
**          called "PAGENAME.css" where PAGENAME is the value of the name=
**          or page= query parameters.  If neither name= nor page= exist,
**          then this section is a no-op.
@   background-color: #558195;
@   color: white;
**
**    (3)   The skin-specific "css.txt" file, if there one.
@ }
@
@ /* Hyperlink colors in the footer */
**
** All of (1), (2), and (3) above (or as many as exist) are concatenated.
** The result is then run through TH1 with the following variables set:
@ div.footer a { color: white; }
@ div.footer a:link { color: white; }
@ div.footer a:visited { color: white; }
@ div.footer a:hover { background-color: white; color: #558195; }
@ 
@ /* <verbatim> blocks */
@ pre.verbatim {
@    background-color: #f5f5f5;
@    padding: 0.5em;
**
**    *   $basename
**    *   $secureurl
**    *   $home
@}
@
@ /* The label/value pairs on (for example) the ci page */
@ table.label-value th {
@   vertical-align: top;
@   text-align: right;
**    *   $logo
@   padding: 0.2ex 2ex;
@ }
;

/*
** WEBPAGE: style.css
**    *   $background
**
** The output from TH1 becomes the style sheet.  Fossil always reports
** that the style sheet is cacheable.
*/
void page_style_css(void){
  Blob css = empty_blob;
  int i;
  const char * zDefaults;
  char *zCSS = 0;
  const char *zSkin;

  cgi_set_content_type("text/css");
  etag_check(0, 0);
  /* Emit all default rules... */
  zDefaults = (const char*)builtin_file("default.css", &i);
  blob_append(&css, zDefaults, i);
  /* Page-specific CSS, if any... */
  page_style_css_append_page_style(&css);
  zSkin = skin_in_use();
  if( zSkin==0 ) zSkin = "this repository";
  blob_appendf(&css,
     "\n/***********************************************************\n"
     "** Skin-specific CSS for %s\n"
     "***********************************************************/\n",
     zSkin);
  zCSS = db_get("css",(char*)zDefaultCSS);
  cgi_append_content(zCSS, -1);
  blob_append(&css,skin_get("css"),-1);
  /* Process through TH1 in order to give an opportunity to substitute
  ** variables such as $baseurl.
  */
  Th_Store("baseurl", g.zBaseURL);
  Th_Store("secureurl", fossil_wants_https(1)? g.zHttpsURL: g.zBaseURL);
  Th_Store("home", g.zTop);
  image_url_var("logo");
  image_url_var("background");
  Th_Render(blob_str(&css));

  /* Tell CGI that the content returned by this page is considered cacheable */
  g.isConst = 1;
}

/*
** All possible capabilities
*/
static const char allCap[] =
  "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKL";

/*
** Compute the current login capabilities
*/
static char *find_capabilities(char *zCap){
  int i, j;
  char c;
  for(i=j=0; (c = allCap[j])!=0; j++){
    if( login_has_capability(&c, 1, 0) ) zCap[i++] = c;
  }
  zCap[i] = 0;
  return zCap;
}

/*
** Compute the current login capabilities that were
** contributed by Anonymous
*/
static char *find_anon_capabilities(char *zCap){
  int i, j;
  char c;
  for(i=j=0; (c = allCap[j])!=0; j++){
    if( login_has_capability(&c, 1, LOGIN_ANON)
      && !login_has_capability(&c, 1, 0) ) zCap[i++] = c;
  }
  zCap[i] = 0;
  return zCap;
}

/*
** WEBPAGE: test_env
**
** Display CGI-variables and other aspects of the run-time
** environment, for debugging and trouble-shooting purposes.
*/
void page_test_env(void){
  webpage_error("");
}

/*
** WEBPAGE: honeypot
** This page is a honeypot for spiders and bots.
*/
void honeypot_page(void){
  unsigned int uSeed = captcha_seed();
  const char *zDecoded = captcha_decode(uSeed, 0);
  int bAutoCaptcha = db_get_boolean("auto-captcha", 0);
  char *zCaptcha = captcha_render(zDecoded);
  style_header("I think you are a robot");
  @ <p>You seem like a robot.</p>
  @
  @ <p>Is that incorrect?  Are you really human?
  @ If so, please prove it by transcribing the captcha text
  @ into the entry box below and pressing "Submit".
  @ <form action="%R/login" method="post">
  @ <input type="hidden" id="u" name="u" value="anonymous">
  @ <p>
  @ Captcha: <input type="text" id="p" name="p" value="">
  @ <input type="submit" name="in" value="Submit">
  @ 
  @ <p>Alternatively, you can <a href="%R/login">log in</a> using an
  @ existing userid.
  @
  @ <p><input type="hidden" name="cs" value="%u(uSeed)">
  @ <div class="captcha"><table class="captcha"><tr><td>\
  @ <pre class="captcha">
  @ %h(zCaptcha)
  @ </pre></td></tr></table>
  if( bAutoCaptcha ) {
     @ <input type="button" value="Fill out captcha" id='autofillButton' \
     @ data-af='%s(zDecoded)'>
     builtin_request_js("login.js");
  }
  @ </div>
  free(zCaptcha);
  @
  @ <p>We regret this inconvenience. However, robots have become so
  @ prolific and so aggressive that they will soak up too much CPU time
  @ and network bandwidth on our servers if allowed to run unchecked.
  @ Your cooperation in demonstrating that you are human is
  @ appreciated.
  style_finish_page();
}

/*
** Webpages that encounter an error due to missing or incorrect
** query parameters can jump to this routine to render an error
** message screen.
**
** For administators, or if the test_env_enable setting is true, then
** details of the request environment are displayed.  Otherwise, just
** the error message is shown.
**
** If zFormat is an empty string, then this is the /test_env page.
*/
void webpage_error(const char *zFormat, ...){
  int showAll = 0;
  char *zErr = 0;
  int isAuth = 0;
  char zCap[100];

  login_check_credentials();
  if( g.perm.Admin || g.perm.Setup  || db_get_boolean("test_env_enable",0) ){
    isAuth = 1;
  }
  cgi_load_environment();
  style_set_current_feature(zFormat[0]==0 ? "test" : "error");
  if( zFormat[0] ){
    va_list ap;
    va_start(ap, zFormat);
    zErr = vmprintf(zFormat, ap);
    va_end(ap);
    style_header("Bad Request");
    @ <h1>/%h(g.zPath): %h(zErr)</h1>
    showAll = 0;
    cgi_set_status(500, "Bad Request");
  }else if( !isAuth ){
    login_needed(0);
    return;
  }else{
  style_header("Environment Test");
#if !defined(__MINGW32__)
  @ uid=%d(getuid()), gid=%d(getgid())<br>
    style_header("Environment Test");
    showAll = PB("showall");
    style_submenu_checkbox("showall", "Cookies", 0, 0);
    style_submenu_element("Stats", "%R/stat");
  }

  if( isAuth ){
  #if !defined(_WIN32)
    @ uid=%d(getuid()), gid=%d(getgid())<br>
  #endif
    @ g.zBaseURL = %h(g.zBaseURL)<br>
    @ g.zHttpsURL = %h(g.zHttpsURL)<br>
    @ g.zTop = %h(g.zTop)<br>
    @ g.zPath = %h(g.zPath)<br>
    @ g.userUid = %d(g.userUid)<br>
    @ g.zLogin = %h(g.zLogin)<br>
    @ g.isHuman = %d(g.isHuman)<br>
    @ g.jsHref = %d(g.jsHref)<br>
    if( g.zLocalRoot ){
      @ g.zLocalRoot = %h(g.zLocalRoot)<br>
    }else{
      @ g.zLocalRoot = <i>none</i><br>
    }
    if( g.nRequest ){
      @ g.nRequest = %d(g.nRequest)<br>
    }
    if( g.nPendingRequest>1 ){
      @ g.nPendingRequest = %d(g.nPendingRequest)<br>
    }
    @ capabilities = %s(find_capabilities(zCap))<br>
    if( zCap[0] ){
      @ anonymous-adds = %s(find_anon_capabilities(zCap))<br>
    }
    @ g.zRepositoryName = %h(g.zRepositoryName)<br>
    @ load_average() = %f(load_average())<br>
#ifndef _WIN32
    @ RSS = %.2f(fossil_rss()/1000000.0) MB</br>
#endif
    (void)cgi_csrf_safe(2);
    switch( g.okCsrf ){
      case 1: {
         @ CSRF safety = Same origin<br>
         break;
      }
      case 2: {
         @ CSRF safety = Same origin, POST<br>
         break;
      }
      case 3: {
         @ CSRF safety = Same origin, POST, CSRF token<br>
         break;
      }
      default: {
         @ CSRF safety = unsafe<br>
         break;
      }
    }

    @ fossil_exe_id() = %h(fossil_exe_id())<br>
    if( g.perm.Admin ){
      int k;
      for(k=0; g.argvOrig[k]; k++){
        Blob t;
        blob_init(&t, 0, 0);
        blob_append_escaped_arg(&t, g.argvOrig[k], 0);
        @ argv[%d(k)] = %h(blob_str(&t))<br>
        blob_zero(&t);
      }
    }
    @ <hr>
    P("HTTP_USER_AGENT");
    P("SERVER_SOFTWARE");
    cgi_print_all(showAll, 0, 0);
    @ <p><form method="POST" action="%R/test_env">
    @ <input type="hidden" name="showall" value="%d(showAll)">
    @ <input type="submit" name="post-test-button" value="POST Test">
    @ </form>
    if( showAll && blob_size(&g.httpHeader)>0 ){
      @ <hr>
      @ <pre>
      @ %h(blob_str(&g.httpHeader))
      @ </pre>
    }
  }
  if( zErr && zErr[0] ){
    style_finish_page();
    cgi_reply();
    fossil_exit(1);
  }else{
    style_finish_page();
  }
}

/*
** Generate a Not Yet Implemented error page.
*/
void webpage_not_yet_implemented(void){
  webpage_error("Not yet implemented");
}

/*
** Generate a webpage for a webpage_assert().
*/
void webpage_assert_page(const char *zFile, int iLine, const char *zExpr){
  fossil_warning("assertion fault at %s:%d - %s", zFile, iLine, zExpr);
  cgi_reset_content();
  webpage_error("assertion fault at %s:%d - %s", zFile, iLine, zExpr);
}

/*
** Issue a 404 Not Found error for a webpage
*/
void webpage_notfound_error(const char *zFormat, ...){
  char *zMsg;
  va_list ap;
  if( zFormat ){
    va_start(ap, zFormat);
    zMsg = vmprintf(zFormat, ap);
    va_end(ap);
  }else{
    zMsg = "Not Found";
  }
  style_set_current_feature("enotfound");
  style_header("Not Found");
  @ <p>%h(zMsg)</p>
  cgi_set_status(404, "Not Found");
  style_finish_page();
}

#if INTERFACE
# define webpage_assert(T) if(!(T)){webpage_assert_page(__FILE__,__LINE__,#T);}
#endif
  @ g.zBaseURL = %h(g.zBaseURL)<br>
  @ g.zTop = %h(g.zTop)<br>
  @ g.zRepositoryName = %h(g.zRepositoryName)<br>
  cgi_print_all();
  style_footer();

/*
** Returns a pseudo-random input field ID, for use in associating an
** ID-less input field with a label. The memory is owned by the
** caller.
*/
static char * style_next_input_id(){
  static int inputID = 0;
  ++inputID;
  return mprintf("input-id-%d", inputID);
}

/*
** Outputs a labeled checkbox element. zWrapperId is an optional ID
** value for the containing element (see below). zFieldName is the
** form element name. zLabel is the label for the checkbox. zValue is
** the optional value for the checkbox. zTip is an optional tooltip,
** which gets set as the "title" attribute of the outermost
** element. If isChecked is true, the checkbox gets the "checked"
** attribute set, else it is not.
**
** Resulting structure:
**
** <div class='input-with-label' title={{zTip}} id={{zWrapperId}}>
**   <input type='checkbox' name={{zFieldName}} value={{zValue}}
**          id='A RANDOM VALUE'
**          {{isChecked ? " checked : ""}}/>
**   <label for='ID OF THE INPUT FIELD'>{{zLabel}}</label>
** </div>
**
** zLabel, and zValue are required. zFieldName, zWrapperId, and zTip
** are may be NULL or empty.
**
** Be sure that the input-with-label CSS class is defined sensibly, in
** particular, having its display:inline-block is useful for alignment
** purposes.
*/
void style_labeled_checkbox(const char * zWrapperId,
                            const char *zFieldName, const char * zLabel,
                            const char * zValue, int isChecked,
                            const char * zTip){
  char * zLabelID = style_next_input_id();
  CX("<div class='input-with-label'");
  if(zTip && *zTip){
    CX(" title='%h'", zTip);
  }
  if(zWrapperId && *zWrapperId){
    CX(" id='%s'",zWrapperId);
  }
  CX("><input type='checkbox' id='%s' ", zLabelID);
  if(zFieldName && *zFieldName){
    CX("name='%s' ",zFieldName);
  }
  CX("value='%T'%s/>",
     zValue ? zValue : "", isChecked ? " checked" : "");
  CX("<label for='%s'>%h</label></div>", zLabelID, zLabel);
  fossil_free(zLabelID);
}

/*
** Outputs a SELECT list from a compile-time list of integers.
** The vargs must be a list of (const char *, int) pairs, terminated
** with a single NULL. Each pair is interpreted as...
**
** If the (const char *) is NULL, it is the end of the list, else
** a new OPTION entry is created. If the string is empty, the
** label and value of the OPTION is the integer part of the pair.
** If the string is not empty, it becomes the label and the integer
** the value. If that value == selectedValue then that OPTION
** element gets the 'selected' attribute.
**
** Note that the pairs are not in (int, const char *) order because
** there is no well-known integer value which we can definitively use
** as a list terminator.
**
** zWrapperId is an optional ID value for the containing element (see
** below).
**
** zFieldName is the value of the form element's name attribute. Note
** that fossil prefers underscores over '-' for separators in form
** element names.
**
** zLabel is an optional string to use as a "label" for the element
** (see below).
**
** zTooltip is an optional value for the SELECT's title attribute.
**
** The structure of the emitted HTML is:
**
** <div class='input-with-label' title={{zToolTip}} id={{zWrapperId}}>
**   <label for='SELECT ELEMENT ID'>{{zLabel}}</label>
**   <select id='RANDOM ID' name={{zFieldName}}>...</select>
** </div>
**
** Example:
**
** style_select_list_int("my-grapes", "my_grapes", "Grapes",
**                      "Select the number of grapes",
**                       atoi(PD("my_field","0")),
**                       "", 1, "2", 2, "Three", 3,
**                       NULL);
**
*/
void style_select_list_int(const char * zWrapperId,
                           const char *zFieldName, const char * zLabel,
                           const char * zToolTip, int selectedVal,
                           ... ){
  char * zLabelID = style_next_input_id();
  va_list vargs;

  va_start(vargs,selectedVal);
  CX("<div class='input-with-label'");
  if(zToolTip && *zToolTip){
    CX(" title='%h'",zToolTip);
  }
  if(zWrapperId && *zWrapperId){
    CX(" id='%s'",zWrapperId);
  }
  CX(">");
  if(zLabel && *zLabel){
    CX("<label for='%s'>%h</label>", zLabelID, zLabel);
  }
  CX("<select name='%s' id='%s'>",zFieldName, zLabelID);
  while(1){
    const char * zOption = va_arg(vargs,char *);
    int v;
    if(NULL==zOption){
      break;
    }
    v = va_arg(vargs,int);
    CX("<option value='%d'%s>",
         v, v==selectedVal ? " selected" : "");
    if(*zOption){
      CX("%s", zOption);
    }else{
      CX("%d",v);
    }
    CX("</option>\n");
  }
  CX("</select>\n");
  CX("</div>\n");
  va_end(vargs);
  fossil_free(zLabelID);
}

/*
** The C-string counterpart of style_select_list_int(), this variant
** differs only in that its variadic arguments are C-strings in pairs
** of (optionLabel, optionValue). If a given optionLabel is an empty
** string, the corresponding optionValue is used as its label. If any
** given value matches zSelectedVal, that option gets preselected. If
** no options match zSelectedVal then the first entry is selected by
** default.
**
** Any of (zWrapperId, zTooltip, zSelectedVal) may be NULL or empty.
**
** Example:
**
** style_select_list_str("my-grapes", "my_grapes", "Grapes",
**                      "Select the number of grapes",
**                       P("my_field"),
**                       "1", "One", "2", "Two", "", "3",
**                       NULL);
*/
void style_select_list_str(const char * zWrapperId,
                           const char *zFieldName, const char * zLabel,
                           const char * zToolTip, char const * zSelectedVal,
                           ... ){
  char * zLabelID = style_next_input_id();
  va_list vargs;

  va_start(vargs,zSelectedVal);
  if(!zSelectedVal){
    zSelectedVal = __FILE__/*some string we'll never match*/;
  }
  CX("<div class='input-with-label'");
  if(zToolTip && *zToolTip){
    CX(" title='%h'",zToolTip);
  }
  if(zWrapperId && *zWrapperId){
    CX(" id='%s'",zWrapperId);
  }
  CX(">");
  if(zLabel && *zLabel){
    CX("<label for='%s'>%h</label>", zLabelID, zLabel);
  }
  CX("<select name='%s' id='%s'>",zFieldName, zLabelID);
  while(1){
    const char * zLabel = va_arg(vargs,char *);
    const char * zVal;
    if(NULL==zLabel){
      break;
    }
    zVal = va_arg(vargs,char *);
    CX("<option value='%T'%s>",
       zVal, 0==fossil_strcmp(zVal, zSelectedVal) ? " selected" : "");
    if(*zLabel){
      CX("%s", zLabel);
    }else{
      CX("%h",zVal);
    }
    CX("</option>\n");
  }
  CX("</select>\n");
  CX("</div>\n");
  va_end(vargs);
  fossil_free(zLabelID);
}

/*
** Generate a <script> with an appropriate nonce.
**
** zOrigin and iLine are the source code filename and line number
** that generated this request.
*/
void style_script_begin(const char *zOrigin, int iLine){
  const char *z;
  for(z=zOrigin; z[0]!=0; z++){
    if( z[0]=='/' || z[0]=='\\' ){
      zOrigin = z+1;
    }
  }
  CX("<script nonce='%s'>/* %s:%d */\n", style_nonce(), zOrigin, iLine);
}

/* Generate the closing </script> tag
*/
void style_script_end(void){
  CX("</script>\n");
}

/*
** Emits a NOSCRIPT tag with an error message stating that JS is
** required for the current page. This "should" be called near the top
** of pages which *require* JS. The inner DIV has the CSS class
** 'error' and can be styled via a (noscript > .error) CSS selector.
*/
void style_emit_noscript_for_js_page(void){
  CX("<noscript><div class='error'>"
     "This page requires JavaScript (ES2015, a.k.a. ES6, or newer)."
     "</div></noscript>");
}

/*
** SETTING: robots-txt width=70 block-text keep-empty
**
** This setting is the override value for the /robots.txt file that
** Fossil returns when run as a stand-alone server for a domain.  As
** Fossil is seldom run as a stand-alone server (and is more commonly
** deployed as a CGI or SCGI or behind a reverse proxy) this setting
** rarely needed.  A reasonable default robots.txt is sent if this
** setting is empty.
*/

/*
** WEBPAGE: robots.txt
**
** Return text/plain which is the content of the "robots-txt" setting, if
** such a setting exists and is non-empty.  Or construct an RFC-9309 complaint
** robots.txt file and return that if there is not "robots.txt" setting.
**
** This is useful for robot exclusion in cases where Fossil is run as a
** stand-alone server in its own domain.  For the more common case where
** Fossil is run as a CGI, or SCGI, or a server that responding to a reverse
** proxy, the returns robots.txt file will not be at the top level of the
** domain, and so it will be pointless.
*/
void robotstxt_page(void){
  const char *z;
  static const char *zDflt = 
     "User-agent: *\n"
     "Allow: /doc\n"
     "Allow: /home\n"
     "Allow: /forum\n"
     "Allow: /technote\n"
     "Allow: /tktview\n"
     "Allow: /wiki\n"
     "Allow: /uv/\n"
     "Allow: /$\n"
     "Disallow: /*\n"
  ;
  z = db_get("robots-txt",zDflt);
  cgi_set_content_type("text/plain");
  cgi_append_content(z, -1);
}
Added src/style.chat.css.






































































































































































































































































































































































































































































































































































































































































































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/* Chat-related */
body.chat span.at-name { /* for @USERNAME references */
  text-decoration: underline;
  font-weight: bold;
}
/* A wrapper for a single single chat message (one row of the UI) */
body.chat .message-widget {
  margin-bottom: 0.75em;
  border: none;
  display: flex;
  flex-direction: column;
  border: none;
  align-items: flex-start;
}
body.chat button,
body.chat input[type=button] {
  line-height: inherit/*undo skin-specific funkiness*/;
}
body.chat .message-widget:last-of-type {
  /* Latest message: reduce bottom gap */
  margin-bottom: 0.1em;
}
body.chat.my-messages-right .message-widget.mine {
  /* Right-aligns a user's own chat messages, similar to how
     most/some mobile messaging apps do it. */
  align-items: flex-end;
}
body.chat.my-messages-right .message-widget.notification {
  /* Center-aligns a system-level notification message. */
  align-items: center;
}
/* The content area of a message. */
body.chat .message-widget-content {
  border-radius: 0.25em;
  border: 1px solid rgba(0,0,0,0.2);
  box-shadow: 0.2em 0.2em 0.2em rgba(0, 0, 0, 0.29);
  padding: 0.25em 0.5em;
  margin-top: 0;
  min-width: 9em /*avoid unsightly "underlap" with the neighboring
                   .message-widget-tab element*/;
  white-space: normal;
  word-break: break-word /* so that full hashes wrap on narrow screens */;
}

body.chat .message-widget-content.wide {
  /* Special case for when embedding content which we really want to
     expand, namely iframes. */
  width: 98%;
}
body.chat .message-widget-content label[for] {
  margin-left: 0.25em;
  cursor: pointer;
}
body.chat .message-widget-content > .attachment-link {
  display: flex;
  flex-direction: row;
}
body.chat .message-widget-content > .attachment-link > a {
  margin-right: 1em;
}
body.chat .message-widget-content > iframe {
  width: 100%;
  max-width: 100%;
  resize: both;
}
body.chat .message-widget-content> a {
  /* Cosmetic: keep skin-induced on-hover underlining from shifting
     content placed below this. */
  border-bottom: 1px transparent;
}
body.chat.monospace-messages .message-widget-content,
body.chat.monospace-messages .chat-input-field{
  font-family: monospace;
}
body.chat .message-widget-content > * {
  margin: 0;
  padding: 0;
}
body.chat .message-widget-content > pre {
  white-space: pre-wrap;
}
body.chat .message-widget-content > .markdown > *:first-child {
  margin-top: 0;
}
body.chat .message-widget-content > .markdown > *:last-child {
  margin-bottom: 0;
}
body.chat .message-widget-content.error .buttons {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  flex-wrap: wrap;
}
body.chat .message-widget-content.error .buttons > button {
  margin: 0.25em;
}

body.chat .message-widget-content.error a {
  color: inherit;
}
body.chat .message-widget-content.error .failed-message {
  display: flex;
  flex-direction: column;
}
body.chat .message-widget-content.error .failed-message textarea {
  min-height: 5rem;
}

/* User name and timestamp (a LEGEND-like element) */
body.chat .message-widget .message-widget-tab {
  border-radius: 0.25em 0.25em 0 0;
  margin: 0 0.25em 0em 0.15em;
  padding: 0 0.5em 0.15em 0.5em;
  cursor: pointer;
  white-space: nowrap;
}
body.chat .fossil-tooltip.help-buttonlet-content {
  font-size: 80%;
}

body.chat .message-widget .message-widget-tab {
  /* Element which renders the main metadata for a given message. */
}
body.chat .message-widget .message-widget-tab .xfrom {
  /* xfrom part of the message tab */
  font-style: italic;
  font-weight: bold;
}

body.chat .message-widget .message-widget-tab .mtime {
  /* mtime part of the message tab */
}

body.chat .message-widget .message-widget-tab .msgid {
  /* msgid part of the message tab */
}

body.chat .message-widget .match {
  font-weight: bold;
  background-color: yellow;
}

body.chat.fossil-dark-style .message-widget .match {
  background-color: #ff4800;
}

/* The popup element for displaying message timestamps
   and deletion controls. */
body.chat .chat-message-popup {
  font-family: monospace;
  font-size: 0.9em;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 0.25em;
  margin-top: 0.25em;
  border: 1px outset;
  border-radius: 0.5em;
}
/* Full message timestamps. */
body.chat .chat-message-popup > span { white-space: nowrap; }
/* Container for the message deletion buttons. */
body.chat .chat-message-popup > .toolbar {
  padding: 0;
  margin: 0;
  border: 2px inset rgba(0,0,0,0.3);
  border-radius: 0.25em;
  display: flex;
  flex-direction: row;
  justify-content: stretch;
  flex-wrap: wrap;
  align-items: center;
}
body.chat .chat-message-popup > .toolbar > * {
  margin: 0.35em;
}
body.chat .chat-message-popup > .toolbar > button {
  flex: 1 1 auto;
}
/* The widget for loading more/older chat messages. */
body.chat #load-msg-toolbar  {
  border-radius: 0.25em;
  padding: 0.1em 0.2em;
  margin-bottom: 1em;
}
/* .all-done is set when chat has loaded all of the available
   historical messages */
body.chat #load-msg-toolbar.all-done {
  opacity: 0.5;
}
body.chat #load-msg-toolbar > div {
  display: flex;
  flex-direction: row;
  justify-content: stretch;
  flex-wrap: wrap;
}
body.chat #load-msg-toolbar > div > button {
  flex: 1 1 auto;
}
/* "Chat-only mode" hides the site header/footer, showing only
   the chat app. */
body.chat.chat-only-mode{
  padding: 0;
  margin: 0 auto;
}
body.chat #chat-button-settings {}

/** Container for the list of /chat messages. */
body.chat #chat-messages-wrapper {
  overflow: auto;
  padding: 0 0.25em;
}
body.chat #chat-messages-wrapper.loading > * {
  /* An attempt at reducing flicker when loading lots of messages. */
  visibility: hidden;
}
body.chat div.content {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column-reverse;
  /* ^^^^ In order to get good automatic scrolling of new messages on
     the BOTTOM in bottom-up chat mode, such that they scroll up
     instead of down, we have to use column-reverse layout, which
     changes #chat-messages-wrapper's "gravity" for purposes of
     scrolling! If we instead use flex-direction:column then each new
     message pushes #chat-input-area down further off the screen!
 */
  align-items: stretch;
}
/* Wrapper for /chat user input controls */
body.chat #chat-input-area {
  display: flex;
  flex-direction: column;
  padding: 0;
  margin: 0;
  flex: 0 1 auto;
}
body.chat:not(.chat-only-mode) #chat-input-area{
  /* Safari user reports that 2em is necessary to keep the file selection
     widget from overlapping the page footer, whereas a margin of 0 is fine
     for FF/Chrome (and 2em is a *huge* waste of space for those). */
  margin-bottom: 0;
}
.chat-input-field {
  flex: 10 1 auto;
  margin: 0;
}
#chat-input-field-x,
#chat-input-field-multi {
  overflow: auto;
  resize: vertical;
}
#chat-input-field-x {
  display: inline-block/*supposed workaround for Chrome weirdness*/;
  padding: 0.2em;
  background-color: rgba(156,156,156,0.3);
  white-space: pre-wrap;
  /* ^^^ Firefox, when pasting plain text into a contenteditable field,
     loses all newlines unless we explicitly set this. Chrome does not. */
  cursor: text;
  /* ^^^ In some browsers the cursor may not change for a contenteditable
     element until it has focus, causing potential confusion. */
}
#chat-input-field-x:empty::before {
  content: attr(data-placeholder);
  opacity: 0.6;
}
.chat-input-field:not(:focus){
  border-width: 1px;
  border-style: solid;
  border-radius: 0.25em;
}
.chat-input-field:focus{
  /* This transparent border helps avoid the text shifting around
     when the contenteditable attribute causes a border (which we
     apparently cannot style) to be added. */
  border-width: 1px;
  border-style: solid;
  border-color: transparent;
  border-radius: 0.25em;
}
/* Widget holding the chat message input field, send button, and
   settings button. */
body.chat #chat-input-line-wrapper {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  flex-wrap: nowrap;
}
body.chat.chat-only-mode #chat-input-line-wrapper {
  padding: 0 0.25em;
}

/*body.chat #chat-input-line-wrapper:not(.compact) {
  flex-wrap: nowrap;
}*/
body.chat #chat-input-line-wrapper.compact {
  /* "The problem" with wrapping, together with a contenteditable input
     field, is that the latter grows as the user types, so causes
     wrapping to happen while they type, then to unwrap as soon as the
     input field is cleared (when the message is sent). When we stay
     wrapped in compact mode, the wrapped buttons simply take up too
     much space. */
  /*flex-wrap: wrap;
  justify-content: flex-end;*/
  flex-direction: column;
  /**
     We "really do" need column orientation here because it's the
     only way to eliminate the possibility that (A) the buttons
     get truncated in very narrow windows and (B) that they keep
     stable positions.
 */
}
body.chat #chat-input-line-wrapper.compact #chat-input-field-x {
}

body.chat #chat-buttons-wrapper {
  flex: 0 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 4em;
  min-height: 1.5em;
  align-self: flex-end
  /*keep buttons stable at bottom/right even when input field
    resizes */;
}
body.chat #chat-input-line-wrapper.compact #chat-buttons-wrapper {
  flex-direction: row;
  flex: 1 1 auto;
  align-self: stretch;
  justify-content: flex-end;
  /*flex-wrap: wrap;*/
  /* Wrapping would be ideal except that the edit widget
     grows in width as the user types, moving the buttons
     around */
}
body.chat #chat-buttons-wrapper > .cbutton {
  padding: 0;
  display: inline-block;
  border-width: 1px;
  border-style: solid;
  border-radius: 0.25em;
  min-width: 4ex;
  max-width: 4ex;
  min-height: 3ex;
  max-height: 3ex;
  margin: 0.125em;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  font-size: 130%;
}
body.chat #chat-buttons-wrapper > .cbutton:hover {
  background-color: rgba(200,200,200,0.3);
}
body.chat #chat-input-line-wrapper.compact #chat-buttons-wrapper > .cbutton {
  margin: 2px 0.125em 0 0.125em;
  min-width: 4.5ex;
  max-width: 4.5ex;
  min-height: 2.3ex;
  max-height: 2.3ex;
  font-size: 120%;
}
body.chat #chat-input-line-wrapper.compact #chat-buttons-wrapper #chat-button-submit {
  min-width: 10ex;
}
.chat-input-field {
  font-family: inherit
}
body.chat #chat-input-line-wrapper:not(.compact) #chat-input-field-multi,
body.chat #chat-input-line-wrapper:not(.compact) #chat-input-field-x {
  min-height: 4rem;
/*
  Problems related to max-height:

  - If we do NOT set a max-height then pasting/typing a large amount
  of text can cause this element to grow without bounds, larger than
  the window, and there's no way to navigate it sensibly.  In this
  case, manually resizing the element (desktop only - mobile doesn't
  offer that) will force it to stay at the selected size even if more
  content is added to it later.

  - If we DO set a max-height then its growth is bounded but it also
  cannot manually expanded by the user.

  The lesser of the two evils seems to be to rely on the browser
  feature that a manual resize of the element will pin its size.
*/
}

body.chat #chat-input-line-wrapper > #chat-button-settings{
  margin: 0 0 0 0.25em;
  max-width: 2em;
}
body.chat #chat-input-line-wrapper > input[type=text],
body.chat #chat-input-line-wrapper > textarea {
  flex: 20 1 auto;
  max-width: revert;
  min-width: 20em;
}
body.chat #chat-input-line-wrapper.compact > input[type=text] {
  margin: 0 0 0.25em 0/* gap for if/when buttons wrap*/;
}
/* Widget holding the file selection control and preview */
body.chat #chat-input-file-area  {
  display: flex;
  flex-direction: row;
  margin: 0;
}
body.chat #chat-input-file-area > .file-selection-wrapper {
  align-self: flex-start;
  margin-right: 0.5em;
  flex: 0 1 auto;
  padding: 0.25em 0.5em;
  white-space: nowrap;
}
body.chat #chat-input-file {
  border:1px solid rgba(0,0,0,0);/*avoid UI shift during drop-targeting*/
  border-radius: 0.25em;
  padding: 0.25em;
}
body.chat #chat-input-file > input {
  flex: 1 0 auto;
}
/* Indicator when a drag/drop is in progress */
body.chat #chat-input-file.dragover {
  border: 1px dashed green;
}
/* Widget holding the details of a selected/dropped file/image. */
body.chat #chat-drop-details {
  padding: 0 1em;
  white-space: pre;
  font-family: monospace;
  margin: auto;
  flex: 0;
}
body.chat #chat-drop-details:empty {
  padding: 0;
  margin: 0;
}
body.chat #chat-drop-details img {
  max-width: 45%;
  max-height: 45%;
}
body.chat .chat-view {
  flex: 20 1 auto
  /*ensure that these grow more than the non-.chat-view elements.
    Note that setting flex shrink to 0 breaks/disables scrolling!*/;
  margin-bottom: 0.2em;
}
body.chat #chat-config,
body.chat #chat-search,
body.chat #chat-preview {
  /* /chat configuration widget */
  display: flex;
  flex-direction: column;
  overflow: auto;
  padding: 0;
  margin: 0;
  align-items: stretch;
  min-height: 6em;
}
body.chat #chat-config #chat-config-options {
  /* /chat config options go here */
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  overflow: auto;
  align-items: stretch;
}
body.chat #chat-config #chat-config-options .menu-entry {
  display: flex;
  align-items: center;
  flex-direction: row-reverse;
  flex-wrap: nowrap;
  padding: 1em;
  flex: 1 1 auto;
  align-self: stretch;
}
body.chat #chat-config #chat-config-options .menu-entry.parent{
  border-radius: 1em 1em 0 1em;
  margin-top: 1em;
}
body.chat #chat-config #chat-config-options .menu-entry.child {
  /*padding-left: 2.5em;*/
  margin-left: 2em;
}
body.chat #chat-config #chat-config-options .menu-entry:nth-of-type(even){
  background-color: rgba(175,175,175,0.15);
}
body.chat #chat-config #chat-config-options .menu-entry:nth-of-type(odd){
  background-color: rgba(175,175,175,0.35);
}
body.chat #chat-config #chat-config-options .menu-entry:first-child {
  /* Config list header */
  border-radius: 0 0 1em 1em;
}
body.chat #chat-config #chat-config-options .menu-entry:first-child .label-wrapper {
  align-items: start;
}
body.chat #chat-config #chat-config-options .menu-entry > .toggle-wrapper {
  /* Holder for a checkbox, if any */
  min-width: 1.5rem;
  margin-right: 1rem;
}
body.chat #chat-config #chat-config-options .menu-entry .label-wrapper {
  /* Wrapper for a LABEL and a .hint element. */
  display: flex;
  flex-direction: column;
  align-self: baseline;
  flex: 1 1 auto;
}
body.chat #chat-config #chat-config-options .menu-entry label {
  /* Config option label. */
  font-weight: bold;
  white-space: initial;
}
body.chat #chat-config #chat-config-options .menu-entry label[for] {
  cursor: pointer;
}
body.chat #chat-config #chat-config-options .menu-entry .hint {
  /* Config menu hint text */
  font-size: 85%;
  font-weight: normal;
  white-space: pre-wrap;
  display: inline-block;
  opacity: 0.85;
}
body.chat #chat-config #chat-config-options .menu-entry select {
}
body.chat #chat-preview #chat-preview-content,
body.chat #chat-search #chat-search-content {
  overflow: auto;
  flex: 1 1 auto;
  padding: 0.5em;
  border: 1px dotted;
}

body.chat #chat-preview #chat-preview-content > * {
  margin: 0;
  padding: 0;
}
body.chat .chat-view .button-bar {
  flex: 0 1 auto;
  display: flex;
  flex-direction: column;
}
body.chat .chat-view .button-bar button {
  padding: 0.5em;
  flex: 1 1 auto;
  margin: 0.25em 0;
}

body.chat #chat-search .button-bar {
  flex: 0 1 auto;
  display: flex;
  flex-direction: row;
}

body.chat #chat-user-list-wrapper {
  /* Safari can't do fieldsets right, so we emulate one. */
  border-radius: 0.5em;
  margin: 1em 0 0.2em 0;
  padding: 0 0.5em;
  border-style: inset;
  border-width: 0 1px 1px 1px/*else collides with the LEGEND*/;
}
body.chat #chat-user-list-wrapper.collapsed {
  padding: 0;
}
body.chat #chat-user-list-wrapper > .legend {
  font-weight: initial;
  padding: 0 0.5em 0 0.5em;
  position: relative;
  top: -1.75ex/* place it like a fieldset legend */;
  cursor: pointer;
}
body.chat #chat-user-list-wrapper > .legend > * {
  vertical-align: middle;
}
body.chat #chat-user-list-wrapper > .legend > *:nth-child(2){
  /* Title label */
  opacity: 0.6;
  font-size: 0.8em;
}
body.chat #chat-user-list-wrapper.collapsed > .legend > *:nth-child(2)::after {
  content: " (tap to toggle)";
}
body.chat #chat-user-list-wrapper .help-buttonlet {
  margin: 0;
}
body.chat #chat-user-list-wrapper.collapsed #chat-user-list {
  position: absolute !important;
  opacity: 0 !important;
  pointer-events: none !important;
  display: none !important;
}
body.chat #chat-user-list {
  margin-top: -1.25ex;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}
body.chat #chat-user-list .chat-user {
  margin: 0.2em;
  padding: 0.1em 0.5em 0.2em 0.5em;
  border-radius: 0.5em;
  cursor: pointer;
  text-align: center;
  white-space: pre;
}
body.chat #chat-user-list .timestamp {
  font-size: 85%;
  font-family: monospace;
}
body.chat #chat-user-list:not(.timestamps) .timestamp {
  display: none;
}
body.chat #chat-user-list .chat-user.selected {
  font-weight: bold;
  text-decoration: underline;
}

body.chat .searchForm {
  margin-top: 1em;
}
body.chat .spacer-widget button {
  margin-left: 1ex;
  margin-right: 1ex;
  display: block;
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}

body.chat .anim-rotate-360 {
  animation: rotate-360 750ms linear;
}
@keyframes rotate-360 {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
body.chat .anim-flip-h {
  animation: flip-h 750ms linear;
}
@keyframes flip-h{
  from { transform: rotateY(0deg); }
  to { transform: rotateY(360deg); }
}
body.chat .anim-flip-v {
  animation: flip-v 750ms linear;
}
@keyframes flip-v{
  from { transform: rotateX(0deg); }
  to { transform: rotateX(360deg); }
}
body.chat .anim-fade-in {
  animation: fade-in 750ms linear;
}
body.chat .anim-fade-in-fast {
  animation: fade-in 350ms linear;
}
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
body.chat .anim-fade-out-fast {
  animation: fade-out 250ms linear;
}
@keyframes fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

Added src/style.fileedit.css.



















































































































































































































































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/** Styles specific to /fileedit... */
body.fileedit.waiting * {
  /* Triggered during AJAX requests. */
  cursor: wait;
}
body.fileedit .error {
  padding: 0.25em;
}
body.fileedit .warning {
  padding: 0.25em;
}
body.fileedit textarea {
  font-family: monospace;
  flex: 10 1 auto;
  height: initial/*undo damage from some skins*/;
  max-width: initial /* default.css pins it at 95% */;
}
body.fileedit textarea:focus,
body.fileedit input:focus{
  /* Depending on the skin, it might be useful to add one or both of
     the following... */
  /*border-width: 1px;*/
  /*border: initial; */
}
body.fileedit fieldset:not(.tab-wrapper) {
  margin: 0.5em 0 0.5em 0;
  padding: 0.25em 0;
  border-radius: 0.5em;
  border-color: inherit;
  border-width: 1px;
  font-size: 90%;
  overflow: auto;
}
body.fileedit fieldset > legend {
  margin: 0 0 0 1em;
  padding: 0 0.5em 0 0.5em;
}
body.fileedit fieldset > div {
  margin: 0 0.25em 0 0.25em;
  padding: 0;
  overflow: auto;
}
body.fileedit fieldset > div > .input-with-label {
  margin: 0.25em 0.5em;
}
body.fileedit fieldset > div > button {
  margin: 0.25em 0.5em;
}
body.fileedit .fileedit-hint {
  font-size: 80%;
  opacity: 0.75;
}
body.fileedit .fileedit-error-report {
  background: yellow;
  color: darkred;
  margin: 1em 0;
  padding: 0.5em;
  border-radius: 0.5em;
}
body.fileedit code.fileedit-manifest {
  display: block;
  height: 16em;
  overflow: auto;
  white-space: pre;
}
body.fileedit div.fileedit-preview {
  margin: 0;
  padding: 0;
}
body.fileedit #fileedit-tabs {
  margin: 0.5em 0 0 0;
}
body.fileedit #fileedit-tab-preview-wrapper {
  overflow: auto;
}
body.fileedit #fileedit-tab-preview-wrapper > pre {
  margin: 0;
}
body.fileedit #fileedit-tab-fileselect > h1 {
  margin: 0;
}
body.fileedit .fileedit-options > div > * {
  margin: 0.25em;
}
body.fileedit .fileedit-options.commit-message > div {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  font-family: monospace;
}
body.fileedit .fileedit-options.commit-message > div > * {
  margin: 0.25em;
}
body.fileedit #fileedit-commit-button-wrapper {
  margin: 0.25em;
}
body.fileedit .tab-container > .tabs > .tab-panel > .fileedit-options {
  margin-top: 0;
  border: none;
  border-radius: 0;
  border-bottom-width: 1px;
  border-bottom-style: dotted;
}
body.fileedit .tab-container > .tabs > .tab-panel > .fileedit-options > button {
  vertical-align: middle;
  margin: 0.5em;
}
body.fileedit .tab-container > .tabs > .tab-panel > .fileedit-options > input {
  vertical-align: middle;
  margin: 0.5em;
}
body.fileedit .tab-container > .tabs > .tab-panel > .fileedit-options > .input-with-label {
  margin: 0 0.5em 0.25em 0.5em;
}
body.fileedit .fileedit-options > div > * {
  margin: 0.25em;
}
body.fileedit .fileedit-options.flex-container.flex-row {
  align-items: first baseline;
}
body.fileedit #fileedit-file-selector {
  display: flex;
  flex-direction: column;
  align-content: flex-start;
  padding: 0 0.25em;
  margin: 0;
  min-height: 12em;
}
body.fileedit #fileedit-file-selector select {
  margin: 0 0 0.5em 0;
  height: initial;
  font-family: monospace;
  border: initial;
}
body.fileedit select:focus {
  border: initial;
}
body.fileedit #fileedit-file-selector select option {
  margin: 0 0 0.5em 0.55em;
}
body.fileedit select option,
body.fileedit select option:focus {
  border: none;
}
body.fileedit #fileedit-file-selector > div {
  padding: 0;
  margin: 0;
}
body.fileedit #fileedit-file-selector > div > * {
  margin: 0.25em 0.5em 0.25em 0;
}
body.fileedit #fileedit-stash-selector {
  margin: 0.25em;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}
body.fileedit #fileedit-stash-selector select {
  margin: 0 1em;
  height: initial;
  font-family: monospace;
  flex: 1 1 auto;
}
body.fileedit .tab-container > .tabs > .tab-panel {
  display: flex;
  flex-direction: column;
}
body.fileedit #fileedit-tab-diff-wrapper {
  margin: 0;
  padding: 0;
  /*overflow: hidden;*/
  /* ^^^ we "really" want hidden and let a sub-sub-child element
     handle that, but that isn't working, for unknown reasons. */
  overflow-x: auto;
  /*display: flex;
  flex-direction: column;
  align-items: stretch;*/
}
body.fileedit #fileedit-tab-diff-wrapper > div {
  margin: 0.5em 0 0.5em 0;
  overflow-wrap: break-word;
}
body.fileedit table.sbsdiffcols {
  /*width: initial;*/
}
body.fileedit #fileedit-tab-diff-wrapper  > pre.udiff {
  margin-top: 0;
}
body.fileedit .sbsdiffcols div.difftxtcol {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: initial;
}
body.fileedit .sbsdiffcols div.difftxtcol pre {
  max-width: 44em;
}

body.fileedit #fileedit-edit-status {
  border-radius: 0.25em 0.25em 0 0;
  margin: 0;
  padding: 0;
  width: 100%;
  cursor: initial;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  font-family: monospace;
}
body.fileedit #fileedit-edit-status > span.name > a {
  display: block;
  word-break: break-word /* needed for long paths */;
}
body.fileedit #fileedit-edit-status > span.links {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
}
body.fileedit #fileedit-file-selector span.is-new,
body.fileedit #fileedit-file-selector span.is-modified {
  font-family: monospace;
}
body.fileedit #fileedit-edit-status span.links > * {
  margin: 0 0.25em;
  white-space: nowrap;
}
body.fileedit #fileedit-edit-status span.links > *::before {
  content: "[";
}
body.fileedit #fileedit-edit-status span.links > *::after {
  content: "]";
}
/* JS selection of line numbers cannot work in preview mode,
   so disable the UI indications which imply that it does
   something... */
body.fileedit table.numbered-lines td.line-numbers > span {
  cursor: unset;
}
body.fileedit table.numbered-lines td.line-numbers > span:hover {
  background-color: inherit;
}
Added src/style.pikchrshow.css.


















































































































































































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/* CSS for the WASM /pikchrshow app. */
/* emcscript-related styling, used during the module load/initialization processes... */
.emscripten { padding-right: 0; margin-left: auto; margin-right: auto; display: block; }
div.emscripten { text-align: center; }
div.emscripten_border { border: 1px solid black; }
#module-spinner { overflow: visible; }
#module-spinner > * {
    margin-top: 1em;
}
.spinner {
    height: 50px;
    width: 50px;
    margin: 0px auto;
    animation: rotation 0.8s linear infinite;
    border-left: 10px solid rgb(0,150,240);
    border-right: 10px solid rgb(0,150,240);
    border-bottom: 10px solid rgb(0,150,240);
    border-top: 10px solid rgb(100,0,200);
    border-radius: 100%;
    background-color: rgb(200,100,250);
}
@keyframes rotation {
    from {transform: rotate(0deg);}
    to {transform: rotate(360deg);}
}

/* The following styles are for app-level use. */
/* TODO: consolidate the WASM- and legacy-mode CSS into this file.
   Since both versions of /pikchrshow share a URI, they both load this
   file. */
textarea {
  font-family: monospace;
  flex: 1 1 auto;
}
#main-wrapper {
  display: flex;
  flex-direction: column-reverse;
  flex: 1 1 auto;
  margin: 0.5em 0;
  overflow: hidden;
}
#main-wrapper.side-by-side {
  flex-direction: row;
}
#main-wrapper.side-by-side > fieldset {
  margin-left: 0.25em;
  margin-right: 0.25em;
}
#main-wrapper:not(.side-by-side) > fieldset {
  margin-bottom: 0.25em;
}
#main-wrapper.swapio {
  flex-direction: column;
}
#main-wrapper.side-by-side.swapio {
  flex-direction: row-reverse;
}
.zone-wrapper{
  display: flex;
  margin: 0;
  flex: 1 1 0%;
  border-radius: 0.5em;
  min-width: inherit/*important: resolves inability to scroll fieldset child element!*/;
  padding: 0.35em 0 0 0;
}
.zone-wrapper > div {
  display:flex;
  flex: 1 1 0%;
}
.zone-wrapper.output {
}
#main-wrapper.side-by-side .zone-wrapper {
  /* Keep the layout from "flopping around" when
     render-while-typing mode is on. */
  /*max-width: 50%;*/
}
#pikchr-output {
  padding: 0;
  margin: 0 auto/*auto resolves a weird left-shift truncation of the SVG*/;
}
#pikchr-output-wrapper {
  flex: 1 1 auto;
  overflow: auto;
}
#pikchr-output-wrapper.text {
  display: flex;
  align-items: stretch;
}
#pikchr-output-wrapper.text > #pikchr-output {
  display: flex;
  align-items: stretch;
  flex: 1 1 auto;
}
#pikchr-output-wrapper.text > #pikchr-output > textarea {
  flex: 1 1 auto;
}
fieldset > legend {
    font-size: 85%;
}
.zone-wrapper textarea {
  border-radius: 0.5em;
  flex: 1 1 auto;
  /*min/max width resolve an inexplicable margin on the RHS.  The -1em
   is for the padding, else we overlap the parent boundaries.*/
  min-width: calc(100% - 1em);
  max-width: calc(100% - 1em);
  padding: 0 0.5em;
}
.zone-wrapper.input {
  min-height: 10em;
  /*width: 50%;*/
  min-width: 20em;
}
.zone-wrapper textarea {
  border: 0;
  outline: 0;
}
.zone-wrapper.output {
  overflow: auto;
  justify-content: space-between;
}
.button-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  align-content: space-between;
  justify-content: flex-start;
}
.button-bar > * {
  margin: 0.05em 0.5em 0.05em 0;
  flex: 0 1 auto;
  align-self: auto;
}
fieldset.options {
  border-radius: 0.5em;
  border: 1px inset;
  display: flex;
  flex-direction: column;
  padding: 0.25em;
}
fieldset.options > div {
  display: flex;
  flex-wrap: wrap;
  font-size: 85%;
}
fieldset.collapsible.options > legend > .fieldset-toggle::after {
  content: " [hide]";
  position: relative;
}
fieldset.collapsible.collapsed > legend > .fieldset-toggle::after {
  content: " [show]";
  position: relative;
}
span.labeled-input {
  padding: 0.25em;
  margin: 0.25em 0.5em;
  border-radius: 0.25em;
  white-space: nowrap;
  background: #0002;
  display: flex;
  align-items: center;
}
span.labeled-input > *:nth-child(2) {
  margin-left: 0.3em;
}
.center { text-align: center; }
.app-view {
  flex: 20 1 auto;
}
#titlebar {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5em;
}
#view-split {
  display: flex;
  flex-direction: column-reverse;
}
Added src/style.uvlist.css.







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body.uvlist input {
  margin: 0.5em;
}

body.uvlist form {
  display: block;
}
Added src/style.wikiedit.css.












































































































































































































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body.wikieedit.waiting * {
  /* Triggered during AJAX requests. */
  cursor: wait;
}
body.wikiedit textarea,
body.wikiedit textarea:focus,
body.wikiedit input,
body.wikiedit input:focus,
body.wikiedit select,
body.wikiedit select:focus{
  /* Depending on the skin, it might be useful to add one or both of
     the following... */
  /*border-width: 1px;*/
  /*border: initial; */
}
body.wikiedit div.wikiedit-preview {
  margin: 0;
  padding: 0;
}
body.wikiedit #wikiedit-tabs {
  margin: 0.5em 0 0 0;
}
body.wikiedit #wikiedit-tab-preview-wrapper {
  overflow: auto;
}
body.wikiedit #wikiedit-tab-diff-wrapper {
  /*overflow: hidden;*/
  /* ^^^ we "really" want hidden and let a sub-sub-child element
     handle that, but that isn't working, for unknown reasons. */
  overflow-x: auto;
}
body.wikiedit .tab-container > .tabs > .tab-panel > .wikiedit-options {
  margin-top: 0;
  border: none;
  border-radius: 0;
  border-bottom-width: 1px;
  border-bottom-style: dotted;
}
body.wikiedit .tab-container > .tabs > .tab-panel > .wikiedit-options > button {
  vertical-align: middle;
  margin: 0.5em;
}
body.wikiedit .tab-container > .tabs > .tab-panel > .wikiedit-options > input {
  vertical-align: middle;
  margin: 0.5em;
}
body.wikiedit .tab-container > .tabs > .tab-panel > .wikiedit-options > .input-with-label {
  margin: 0 0.5em 0.25em 0.5em;
}
body.wikiedit label {
  display: inline; /* some skins set label display to block! */
}
body.wikiedit .wikiedit-options > div > * {
  margin: 0.25em;
}
body.wikiedit .wikiedit-options.flex-container.flex-row {
  align-items: first baseline;
}
body.wikiedit .WikiList {
  display: flex;
  flex-direction: column;
  align-items: start;
}
body.wikiedit .WikiList select {
  font-size: 110%;
  margin: initial;
  height: initial /* some skins set these to a fixed height */;
  font-family: monospace;
  border: initial;
}
body.wikiedit select:focus {
  border: initial;
}
body.wikiedit .WikiList select option {
  margin: 0 0 0.5em 0.55em;
}
body.wikiedit select option,
body.wikiedit select option:focus {
  border: none;
}
body.wikiedit .WikiList select option.stashed,
body.wikiedit .WikiList select option.stashed-new,
body.wikiedit .WikiList select option.deleted {
  margin-left: -0.4em;  
}
body.wikiedit .WikiList.hide-deleted select option.deleted {
  display: none;
}
body.wikiedit textarea {
  max-width: initial;
}
body.wikiedit .tabs .tab-panel {
  /* Needed for wide diffs */
  overflow: auto;
}
body.wikiedit .WikiList fieldset {
  padding: 0.25em;
  border-width: 1px /* Ardoise skin sets this to 0 */;
  min-width: 6em;
  border-style: inset;
}
body.wikiedit .WikiList label {
  margin: 0 0.5em;
  vertical-align: text-bottom;
}
body.wikiedit .WikiList legend {
  margin: 0 0 0 0.5em;
}
body.wikiedit .WikiList > fieldset {
  margin: 0;
  width: calc(100% - 1em);
}
body.wikiedit .WikiList fieldset > :not(legend) {
  /* Stretch page selection list when it's empty or only has short page names */
  margin: 0;
  width: 100%;
}
body.wikiedit .WikiList .fieldset-wrapper {
  /* Container for the filter and edit status fieldsets */
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: stretch;
  margin: 0;
}
body.wikiedit .WikiList button.save {
  margin: 1em 0 0 0;
}
body.wikiedit .WikiList .new-page {
  align-items: flex-start;
  max-width: 15em;
}
body.wikiedit .WikiList .new-page input {
}
body.wikiedit #wikiedit-tab-misc h3 {
  margin: 0;
}
body.wikiedit span.mini-tip {
  font-size: 80%;
}

body.wikiedit span.save-button-slot {
  /* These invisible placeholders mark spots in the UI
     (max. 1 per tab) to where the save button gets
     relocated as we switch between tabs. */
  display: none;
}

body.wikiedit #wikiedit-edit-status {
  border-radius: 0.25em 0.25em 0 0;
  margin: 0;
  padding: 0;
  width: 100%;
  cursor: initial;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  font-family: monospace;
}
body.wikiedit #wikiedit-edit-status > span.name {
  display: block;
  word-break: break-word /* needed for long names, e.g. checkin/... */;
}
body.wikiedit #wikiedit-edit-status > span.links {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
}
body.wikiedit .WikiList span.is-new,
body.wikiedit .WikiList span.is-modified,
body.wikiedit .WikiList span.is-deleted {
  font-family: monospace;
}
body.wikiedit #wikiedit-edit-status span.links > a {
  margin: 0 0.25em;
  white-space: nowrap;
}
body.wikiedit #wikiedit-edit-status span.links > a::before {
  content: "[";
}
body.wikiedit #wikiedit-edit-status span.links > a::after {
  content: "]";
}
body.wikiedit #wikiedit-stash-selector {
  margin: 0.25em;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}
body.wikiedit #wikiedit-stash-selector select {
  margin: 0 1em 0 0.5em;
  height: initial;
  font-family: monospace;
  flex: 1 1 auto;
}
body.wikiedit fieldset.page-types-list > div > span {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
}
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**
** This file contains code used to push, pull, and sync a repository
*/
#include "config.h"
#include "sync.h"
#include <assert.h>

#if INTERFACE
/*
** Explain what type of sync operation is about to occur
*/
static void sync_explain(unsigned syncFlags){
  if( g.url.isAlias ){
    const char *url;
    if( g.url.useProxy ){
      url = g.url.proxyUrlCanonical;
    }else{
      url = g.url.canonical;
    }
    if( (syncFlags & (SYNC_PUSH|SYNC_PULL))==(SYNC_PUSH|SYNC_PULL) ){
      fossil_print("Sync with %s\n", url);
    }else if( syncFlags & SYNC_PUSH ){
      fossil_print("Push to %s\n", url);
    }else if( syncFlags & SYNC_PULL ){
      fossil_print("Pull from %s\n", url);
    }
  }
}
** Flags used to determine which direction(s) an autosync goes in.


/*
** Call client_sync() one or more times in order to complete a
** sync operation.  Usually, client_sync() is called only once, though
** is can be called multiple times if the SYNC_ALLURL flags is set.
*/
static int client_sync_all_urls(
  unsigned syncFlags,      /* Mask of SYNC_* flags */
  unsigned configRcvMask,  /* Receive these configuration items */
  unsigned configSendMask, /* Send these configuration items */
  const char *zAltPCode    /* Alternative project code (usually NULL) */
){
  int nErr = 0;            /* Number of errors seen */
  int nOther;              /* Number of extra remote URLs */
  char **azOther;          /* Text of extra remote URLs */
  int i;                   /* Loop counter */
  int iEnd;                /* Loop termination point */
  int nextIEnd;            /* Loop termination point for next pass */
  int iPass;               /* Which pass through the remotes.  0 or 1 */
  int nPass;               /* Number of passes to make.  1 or 2 */
  Stmt q;                  /* An SQL statement */
  UrlData baseUrl;         /* Saved parse of the default remote */
#define AUTOSYNC_PUSH  1
#define AUTOSYNC_PULL  2

#endif /* INTERFACE */


  sync_explain(syncFlags);
  if( (syncFlags & SYNC_ALLURL)==0 ){
    /* Common-case:  Only sync with the remote identified by g.url */
    nErr = client_sync(syncFlags, configRcvMask, configSendMask, zAltPCode, 0);
    if( nErr==0 ) url_remember();
    return nErr;
  }

  /* If we reach this point, it means we want to sync with all remotes */
  memset(&baseUrl, 0, sizeof(baseUrl));
  url_move_parse(&baseUrl, &g.url);
  nOther = 0;
  azOther = 0;
  db_prepare(&q,
    "SELECT substr(name,10) FROM config"
    " WHERE name glob 'sync-url:*'"
    "   AND value<>(SELECT value FROM config WHERE name='last-sync-url')"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zUrl = db_column_text(&q, 0);
    azOther = fossil_realloc(azOther, sizeof(*azOther)*(nOther+1));
    azOther[nOther++] = fossil_strdup(zUrl);
  }
  db_finalize(&q);
  iEnd = nOther+1;
  nextIEnd = 0;
  nPass = 1 + ((syncFlags & (SYNC_PUSH|SYNC_PULL))==(SYNC_PUSH|SYNC_PULL));
  for(iPass=0; iPass<nPass; iPass++){
    for(i=0; i<iEnd; i++){
      int rc;
      int nRcvd;
      if( i==0 ){
        url_move_parse(&g.url, &baseUrl);  /* Load canonical URL */
      }else{
        /* Load an auxiliary remote URL */
        url_parse(azOther[i-1],
                  URL_PROMPT_PW|URL_ASK_REMEMBER_PW|URL_USE_CONFIG);
      }
      if( i>0 || iPass>0 ) sync_explain(syncFlags);
      rc = client_sync(syncFlags, configRcvMask, configSendMask,
                       zAltPCode, &nRcvd);
      if( nRcvd>0 ){
        /* If new artifacts were received, we want to repeat all prior
        ** remotes on the second pass */
        nextIEnd = i;
      }
      nErr += rc;
      if( rc==0 && iPass==0 ){
        if( i==0 ){
          url_remember();
        }else if( (g.url.flags & URL_REMEMBER_PW)!=0 ){
          char *zKey = mprintf("sync-pw:%s", azOther[i-1]);
          char *zPw = obscure(g.url.passwd);
          if( zPw && zPw[0] ){
            db_set(zKey/*works-like:""*/, zPw, 0);
          }
          fossil_free(zPw);
          fossil_free(zKey);
        }
      }
      if( i==0 ){
        url_move_parse(&baseUrl, &g.url); /* Don't forget canonical URL */
      }else{
        url_unparse(&g.url);  /* Delete auxiliary URL parses */
      }
    }
    iEnd = nextIEnd;
  }
  for(i=0; i<nOther; i++){
    fossil_free(azOther[i]);
    azOther[i] = 0;
  }
  fossil_free(azOther);
  url_move_parse(&g.url, &baseUrl);  /* Restore the canonical URL parse */
  return nErr;
}


/*
** If the respository is configured for autosyncing, then do an
** autosync.  This will be a pull if the argument is true or a push
** if the argument is false.
** If the repository is configured for autosyncing, then do an
** autosync.  Bits of the "flags" parameter determine details of behavior:
**
**   SYNC_PULL           Pull content from the server to the local repo
**   SYNC_PUSH           Push content from local up to the server
**   SYNC_CKIN_LOCK      Take a check-in lock on the current check-out.
**   SYNC_VERBOSE        Extra output
**
** Return the number of errors.
**
** The autosync setting can be a boolean or "pullonly".  No autosync
** is attempted if the autosync setting is off, and only auto-pull is
** attempted if autosync is set to "pullonly".  The check-in lock is
** not acquired unless autosync is set to "on".
**
** If dont-push setting is true, that is the same as having autosync
** set to pullonly.
*/
void autosync(int flags){
static int autosync(int flags, const char *zSubsys){
  const char *zUrl;
  const char *zAutosync;
  const char *zPw;
  int rc;
  int configSync = 0;       /* configuration changes transferred */
  if( g.fNoSync ){
    return;
    return 0;
  }
  zAutosync = db_get("autosync", 0);
  if( zAutosync ){
    if( (flags & AUTOSYNC_PUSH)!=0 && memcmp(zAutosync,"pull",4)==0 ){
      return;   /* Do not auto-push when autosync=pullonly */
    }
  zAutosync = db_get_for_subsystem("autosync", zSubsys);
  if( zAutosync==0 ) zAutosync = "on";  /* defend against misconfig */
  if( is_false(zAutosync) ) return 0;
  if( db_get_boolean("dont-push",0)
   || sqlite3_strglob("*pull*", zAutosync)==0
  ){
    flags &= ~SYNC_CKIN_LOCK;
    if( flags & SYNC_PUSH ) return 0;
  }
    if( is_false(zAutosync) ){
      return;   /* Autosync is completely off */
    }
  if( find_option("verbose","v",0)!=0 ) flags |= SYNC_VERBOSE;
  url_parse(0, URL_REMEMBER|URL_USE_CONFIG);
  if( g.url.protocol==0 ) return 0;
  if( g.url.user!=0 && g.url.passwd==0 ){
    g.url.passwd = unobscure(db_get("last-sync-pw", 0));
    g.url.flags |= URL_PROMPT_PW;
    url_prompt_for_password();
  }
  g.zHttpAuth = get_httpauth();
  if( sqlite3_strglob("*all*", zAutosync)==0 ){
    rc = client_sync_all_urls(flags|SYNC_ALLURL, configSync, 0, 0);
  }else{
    url_remember();
    sync_explain(flags);
    url_enable_proxy("via proxy: ");
    rc = client_sync(flags, configSync, 0, 0, 0);
  }
    /* Autosync defaults on.  To make it default off, "return" here. */
  }
  zUrl = db_get("last-sync-url", 0);
  if( zUrl==0 ){
  return rc;
}

/*
** This routine will try a number of times to perform autosync with a
** 0.5 second sleep between attempts.  The number of attempts is determined
** by the "autosync-tries" setting, which defaults to 1.
**
** Return zero on success and non-zero on a failure.  If failure occurs
** and doPrompt flag is true, ask the user if they want to continue, and
** if they answer "yes" then return zero in spite of the failure.
*/
int autosync_loop(int flags, int doPrompt, const char *zSubsystem){
  int n = 0;
  int rc = 0;
  int nTries = db_get_int("autosync-tries", 1);
  if( (flags & (SYNC_PUSH|SYNC_PULL))==(SYNC_PUSH|SYNC_PULL)
   && db_get_boolean("uv-sync",0)
  ){
    return;  /* No default server */
    flags |= SYNC_UNVERSIONED;
  }
  if( nTries<1 ) nTries = 1;
  while( (n==0 || n<nTries) && (rc=autosync(flags, zSubsystem)) ){
    if( rc ){
      if( ++n<nTries ){
        fossil_warning("Autosync failed, making another attempt.");
  zPw = db_get("last-sync-pw", 0);
  url_parse(zUrl);
  if( g.urlUser!=0 && g.urlPasswd==0 ){
    g.urlPasswd = mprintf("%s", zPw);
        sqlite3_sleep(500);
      }else{
        fossil_warning("Autosync failed.");
      }
    }
  }
  if( rc && doPrompt ){
    Blob ans;
    char cReply;
    prompt_user("continue in spite of sync failure (y/N)? ", &ans);
    cReply = blob_str(&ans)[0];
    if( cReply=='y' || cReply=='Y' ) rc = 0;
    blob_reset(&ans);
  }
  printf("Autosync:  %s\n", g.urlCanonical);
  url_enable_proxy("via proxy: ");
  return rc;
  client_sync((flags & AUTOSYNC_PUSH)!=0, 1, 0, 0, 0);
}

/*
** This routine processes the command-line argument for push, pull,
** and sync.  If a command-line argument is given, that is the URL
** of a server to sync against.  If no argument is given, use the
** most recently synced URL.  Remember the current URL for next time.
*/
void process_sync_args(void){
static void process_sync_args(
  unsigned *pConfigFlags,      /* Write configuration flags here */
  unsigned *pSyncFlags,        /* Write sync flags here */
  int uvOnly,                  /* Special handling flags for UV sync */
  unsigned urlOmitFlags        /* Omit these URL flags */
){
  const char *zUrl = 0;
  const char *zPw = 0;
  int urlOptional = find_option("autourl",0,0)!=0;
  g.dontKeepUrl = find_option("once",0,0)!=0;
  const char *zHttpAuth = 0;
  unsigned configSync = 0;
  unsigned urlFlags = URL_REMEMBER | URL_PROMPT_PW;
  int urlOptional = 0;
  if( find_option("autourl",0,0)!=0 ){
    urlOptional = 1;
    urlFlags = 0;
  }
  zHttpAuth = find_option("httpauth","B",1);
  if( find_option("once",0,0)!=0 ) urlFlags &= ~URL_REMEMBER;
  if( (*pSyncFlags) & SYNC_FROMPARENT ) urlFlags |= URL_USE_PARENT;
  if( !uvOnly ){
    if( find_option("private",0,0)!=0 ){
      *pSyncFlags |= SYNC_PRIVATE;
    }
    /* The --verily option to sync, push, and pull forces extra igot cards
    ** to be exchanged.  This can overcome malfunctions in the sync protocol.
    */
    if( find_option("verily",0,0)!=0 ){
      *pSyncFlags |= SYNC_RESYNC;
    }
  }
  if( find_option("private",0,0)!=0 ){
    *pSyncFlags |= SYNC_PRIVATE;
  }
  if( find_option("verbose","v",0)!=0 ){
    *pSyncFlags |= SYNC_VERBOSE;
    if( find_option("verbose","v",0)!=0 ){
      *pSyncFlags |= SYNC_XVERBOSE;
    }
  }
  if( find_option("no-http-compression",0,0)!=0 ){
    *pSyncFlags |= SYNC_NOHTTPCOMPRESS;
  }
  if( find_option("all",0,0)!=0 ){
    *pSyncFlags |= SYNC_ALLURL;
  }

  /* Undocumented option to cause links transitive links to other
  ** repositories to be shared */
  if( ((*pSyncFlags) & SYNC_PULL)!=0
   && find_option("share-links",0,0)!=0
  ){
    *pSyncFlags |= SYNC_SHARE_LINKS;
  }

  /* Option:  --transport-command COMMAND
  **
  ** Causes COMMAND to be run with three arguments in order to talk
  ** to the server.
  **
  **       COMMAND URL PAYLOAD REPLY
  **
  ** URL is the server name.  PAYLOAD is the name of a temporary file
  ** that will contain the xfer-protocol payload to send to the server.
  ** REPLY is a temporary filename in which COMMAND should write the
  ** content of the reply from the server.
  **
  ** CMD is reponsible for HTTP redirects.  The following Fossil command
  ** can be used for CMD to achieve a working sync:
  **
  **      fossil test-httpmsg --xfer
  */
  g.zHttpCmd = find_option("transport-command",0,1);

  url_proxy_options();
  clone_ssh_find_options();
  db_find_and_open_repository(1);
  db_open_config(0);
  if( !uvOnly ) db_find_and_open_repository(0, 0);
  db_open_config(0, 1);
  if( g.argc==2 ){
    zUrl = db_get("last-sync-url", 0);
    if( db_get_boolean("auto-shun",0) ) configSync = CONFIGSET_SHUN;
    zPw = db_get("last-sync-pw", 0);
  }else if( g.argc==3 ){
    zUrl = g.argv[2];
    if( (*pSyncFlags) & SYNC_ALLURL ){
      fossil_fatal("cannot use both the --all option and specific URL \"%s\"",
          zUrl);
  }
  if( zUrl==0 ){
    if( urlOptional ) exit(0);
    usage("URL");
    }
  }
  if( ((*pSyncFlags) & (SYNC_PUSH|SYNC_PULL))==(SYNC_PUSH|SYNC_PULL)
   && db_get_boolean("uv-sync",0)
  ){
    *pSyncFlags |= SYNC_UNVERSIONED;
  }
  urlFlags &= ~urlOmitFlags;
  if( urlFlags & URL_REMEMBER ){
    clone_ssh_db_set_options();
  }
  url_parse(zUrl);
  url_parse(zUrl, urlFlags|URL_USE_CONFIG);
  if( !g.dontKeepUrl ){
    db_set("last-sync-url", g.urlCanonical, 0);
    if( g.urlPasswd ) db_set("last-sync-pw", g.urlPasswd, 0);
  remember_or_get_http_auth(zHttpAuth, urlFlags & URL_REMEMBER, zUrl);
  if( g.url.protocol==0 ){
    if( urlOptional ) fossil_exit(0);
    usage("URL");
  }
  if( g.urlUser!=0 && g.urlPasswd==0 ){
    if( zPw==0 ){
      url_prompt_for_password();
  user_select();
  url_enable_proxy("via proxy: ");
  *pConfigFlags |= configSync;
  if( (*pSyncFlags & SYNC_ALLURL)==0 && zUrl==0 ){
    const char *zAutosync = db_get_for_subsystem("autosync", "sync");
    }else{
      g.urlPasswd = mprintf("%s", zPw);
    if( sqlite3_strglob("*all*", zAutosync)==0 ){
      *pSyncFlags |= SYNC_ALLURL;
    }
  }
  user_select();
  if( g.argc==2 ){
    printf("Server:    %s\n", g.urlCanonical);
  }
}
  url_enable_proxy("via proxy: ");
}


/*
** COMMAND: pull
**
** Usage: %fossil pull ?URL? ?options?
**
** Pull changes from a remote repository into the local repository.
** Use the "-R REPO" or "--repository REPO" command-line options
** to specify an alternative repository file.
** Pull all sharable changes from a remote repository into the local
** repository.  Sharable changes include public check-ins, edits to
** wiki pages, tickets, tech-notes, and forum posts.  Add
** the --private option to pull private branches.  Use the
** "configuration pull" command to pull website configuration details.
**
** If the URL is not specified, then the URL from the most recent
** clone, push, pull, remote-url, or sync command is used.
** If URL is not specified, then the URL from the most recent clone, push,
** pull, remote, or sync command is used.  See "fossil help clone" for
** details on the URL formats.
**
** The URL specified normally becomes the new "remote-url" used for
** subsequent push, pull, and sync operations.  However, the "--once"
** command-line option makes the URL a one-time-use URL that is not
** saved.
** Options:
**   --all                      Pull from all remotes, not just the default
**   -B|--httpauth USER:PASS    Credentials for the simple HTTP auth protocol,
**                              if required by the remote website
**   --from-parent-project      Pull content from the parent project
**   --ipv4                     Use only IPv4, not IPv6
**   --no-http-compression      Do not compress HTTP traffic
**   --once                     Do not remember URL for subsequent syncs
**   --private                  Pull private branches too
**   --project-code CODE        Use CODE as the project code
**   --proxy PROXY              Use the specified HTTP proxy
**   -R|--repository REPO       Local repository to pull into
**   --ssl-identity FILE        Local SSL credentials, if requested by remote
**   --ssh-command SSH          Use SSH as the "ssh" command
**   --transport-command CMD    Use external command CMD to move messages
**                              between client and server
**   -v|--verbose               Additional (debugging) output - use twice to
**                              also trace network traffic.
**   --verily                   Exchange extra information with the remote
**                              to ensure no content is overlooked
**
** See also: clone, push, sync, remote-url
** See also: [[clone]], [[config]], [[push]], [[remote]], [[sync]]
*/
void pull_cmd(void){
  unsigned configFlags = 0;
  unsigned syncFlags = SYNC_PULL;
  unsigned urlOmitFlags = 0;
  const char *zAltPCode = find_option("project-code",0,1);
  if( find_option("from-parent-project",0,0)!=0 ){
    syncFlags |= SYNC_FROMPARENT;
  }
  if( zAltPCode ) urlOmitFlags = URL_REMEMBER;
  process_sync_args();
  client_sync(0,1,0,0,0);
  process_sync_args(&configFlags, &syncFlags, 0, urlOmitFlags);

  /* We should be done with options.. */
  verify_all_options();

  client_sync_all_urls(syncFlags, configFlags, 0, zAltPCode);
}

/*
** COMMAND: push
**
** Usage: %fossil push ?URL? ?options?
**
** Push changes in the local repository over into a remote repository.
** Use the "-R REPO" or "--repository REPO" command-line options
** to specify an alternative repository file.
** Push all sharable changes from the local repository to a remote
** repository.  Sharable changes include public check-ins, edits to
** wiki pages, tickets, tech-notes, and forum posts.  Use
** --private to also push private branches.  Use the "configuration
** push" command to push website configuration details.
**
** If the URL is not specified, then the URL from the most recent
** clone, push, pull, remote-url, or sync command is used.
** If URL is not specified, then the URL from the most recent clone, push,
** pull, remote, or sync command is used.  See "fossil help clone" for
** details on the URL formats.
**
** The URL specified normally becomes the new "remote-url" used for
** subsequent push, pull, and sync operations.  However, the "--once"
** command-line option makes the URL a one-time-use URL that is not
** saved.
** Options:
**   --all                      Push to all remotes, not just the default
**   -B|--httpauth USER:PASS    Credentials for the simple HTTP auth protocol,
**                              if required by the remote website
**   --ipv4                     Use only IPv4, not IPv6
**   --no-http-compression      Do not compress HTTP traffic
**   --once                     Do not remember URL for subsequent syncs
**   --proxy PROXY              Use the specified HTTP proxy
**   --private                  Push private branches too
**   -R|--repository REPO       Local repository to push from
**   --ssl-identity FILE        Local SSL credentials, if requested by remote
**   --ssh-command SSH          Use SSH as the "ssh" command
**   --transport-command CMD    Use external command CMD to communicate with
**                              the server
**   -v|--verbose               Additional (debugging) output - use twice for
**                              network debugging
**   --verily                   Exchange extra information with the remote
**                              to ensure no content is overlooked
**
** See also: clone, pull, sync, remote-url
** See also: [[clone]], [[config]], [[pull]], [[remote]], [[sync]]
*/
void push_cmd(void){
  unsigned configFlags = 0;
  unsigned syncFlags = SYNC_PUSH;
  process_sync_args();
  client_sync(1,0,0,0,0);
  process_sync_args(&configFlags, &syncFlags, 0, 0);

  /* We should be done with options.. */
  verify_all_options();

  if( db_get_boolean("dont-push",0) ){
    fossil_fatal("pushing is prohibited: the 'dont-push' option is set");
  }
  client_sync_all_urls(syncFlags, 0, 0, 0);
}


/*
** COMMAND: sync
**
** Usage: %fossil sync ?URL? ?options?
** Usage: %fossil sync ?REMOTE? ?options?
**
** Synchronize the local repository with a remote repository.  This is
** Synchronize all sharable changes between the local repository and a
** the equivalent of running both "push" and "pull" at the same time.
** Use the "-R REPO" or "--repository REPO" command-line options
** to specify an alternative repository file.
**
** remote repository, with the remote provided as a URL or a
** configured remote name (see the [[remote]] command).  Sharable
** changes include public check-ins and edits to wiki pages, tickets,
** forum posts, and technical notes.
** If a user-id and password are required, specify them as follows:
**
**     http://userid:password@www.domain.com:1234/path
**
** If the URL is not specified, then the URL from the most recent successful
** clone, push, pull, remote-url, or sync command is used.
** If REMOTE is not specified, then the URL from the most recent clone, push,
** pull, remote, or sync command is used.  See "fossil help clone" for
** details on the URL formats.
**
** Options:
**   --all                      Sync with all remotes, not just the default
** The URL specified normally becomes the new "remote-url" used for
** subsequent push, pull, and sync operations.  However, the "--once"
** command-line option makes the URL a one-time-use URL that is not
** saved.
**   -B|--httpauth USER:PASS    Credentials for the simple HTTP auth protocol,
**                              if required by the remote website
**   --ipv4                     Use only IPv4, not IPv6
**   --no-http-compression      Do not compress HTTP traffic
**   --once                     Do not remember URL for subsequent syncs
**   --proxy PROXY              Use the specified HTTP proxy
**   --private                  Sync private branches too
**   -R|--repository REPO       Local repository to sync with
**   --ssl-identity FILE        Local SSL credentials, if requested by remote
**   --ssh-command SSH          Use SSH as the "ssh" command
**   --transport-command CMD    Use external command CMD to move message
**                              between the client and the server
**   -u|--unversioned           Also sync unversioned content
**   -v|--verbose               Additional (debugging) output - use twice to
**                              get network debug info
**   --verily                   Exchange extra information with the remote
**                              to ensure no content is overlooked
**
** See also:  clone, push, pull, remote-url
** See also: [[clone]], [[pull]], [[push]], [[remote]]
*/
void sync_cmd(void){
  unsigned configFlags = 0;
  unsigned syncFlags = SYNC_PUSH|SYNC_PULL;
  if( find_option("unversioned","u",0)!=0 ){
    syncFlags |= SYNC_UNVERSIONED;
  }
  process_sync_args();
  client_sync(1,1,0,0,0);
  process_sync_args(&configFlags, &syncFlags, 0, 0);

  /* We should be done with options.. */
  verify_all_options();

  if( db_get_boolean("dont-push",0) ) syncFlags &= ~SYNC_PUSH;
  if( (syncFlags & SYNC_PUSH)==0 ){
    fossil_warning("pull only: the 'dont-push' option is set");
  }
  client_sync_all_urls(syncFlags, configFlags, 0, 0);
}

/*
** Handle the "fossil unversioned sync" and "fossil unversioned revert"
** commands.
*/
void sync_unversioned(unsigned syncFlags){
  unsigned configFlags = 0;
  (void)find_option("uv-noop",0,0);
  process_sync_args(&configFlags, &syncFlags, 1, 0);
  verify_all_options();
  client_sync(syncFlags, 0, 0, 0, 0);
}

/*
** COMMAND: remote
** COMMAND: remote-url*
**
** Usage: %fossil remote ?SUBCOMMAND ...?
**
** View or modify the URLs of remote repositories used for syncing.
** The "default" remote is specially named by Fossil and corresponds to
** the URL used in the most recent "sync", "push", "pull", "clone", or
** similar command.  As such, the default remote can be updated by
** Fossil with each sync command.  Other named remotes are persistent.
**
** > fossil remote
**
**     With no arguments, this command shows the current default remote
**     URL.  If there is no default, it shows "off".
**
** > fossil remote add NAME URL
**
**     Add a new named URL. Afterwards, NAME can be used as a short
**     symbolic name for URL in contexts where a URL is required. The
**     URL argument can be "default" or a prior symbolic name to make
**     a copy of an existing URL under the new NAME. The "default"
**     remote cannot be defined with this subcommand; instead,
**     use 'fossil remote REF' as documented below.
**
** > fossil remote config-data
**
**     DEBUG USE ONLY - Show the name and value of every CONFIG table
**     entry in the repository that is associated with the remote URL store.
**     Passwords are obscured in the output.
**
** > fossil remote delete NAME
**
**     Delete a named URL previously created by the "add" subcommand.
**
** > fossil remote hyperlink ?FILENAME? ?LINENUM? ?LINENUM?
**
**     Print a URL that will access the current check-out on the remote
**     repository.  Or if the FILENAME argument is included, print the
**     URL to access that particular file within the current check-out.
**     If one or two linenumber arguments are provided after the filename,
**     then the URL is for the line or range of lines specified.
**
** > fossil remote list|ls
**
**     Show all remote repository URLs.
**
** > fossil remote off
**
**     Forget the default URL. This disables autosync.
**
**     This is a convenient way to enter "airplane mode".  To enter
**     airplane mode, first save the current default URL, then turn the
**     default off.  Perhaps like this:
**
**         fossil remote add main default
**         fossil remote off
**
**     To exit airplane mode and turn autosync back on again:
**
**         fossil remote main
**
** > fossil remote scrub
**
**     Forget any saved passwords for remote repositories, but continue
**     to remember the URLs themselves.  You will be prompted for the
**     password the next time it is needed.
**
** > fossil remote ui ?FILENAME? ?LINENUM? ?LINENUM?
**
**     Bring up a web browser pointing at the remote repository, and
**     specifically to the page that describes the current check-out
**     on that remote repository.  Or if FILENAME and/or LINENUM arguments
**     are provided, to the specific file and range of lines.  This
**     command is similar to "fossil remote hyperlink" except that instead
**     of printing the URL, it passes the URL off to the web browser.
**
** > fossil remote REF
**
**     Make REF the new default URL, replacing the prior default.
**     REF may be a URL or a NAME from a prior "add".
*/
void remote_url_cmd(void){
  char *zUrl, *zArg;
  int nArg;
  int showPw;
  db_find_and_open_repository(0, 0);
  showPw = find_option("show-passwords",0,0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  /* 2021-10-25: A note about data structures.
  **
  ** The remote URLs are stored in the CONFIG table.  The URL is stored
  ** separately from the password.  The password is obscured using the
  ** obscure() function.
  **
  ** Originally, Fossil only preserved a single remote URL.  That URL
  ** is stored in "last-sync-url" and the password in "last-sync-pw".  The
  ** ability to have multiple remotes was added later so these names
  ** were retained for backwards compatibility.  The other remotes are
  ** stored in "sync-url:NAME" and "sync-pw:NAME" where NAME is the name
  ** of the remote.
  **
  ** The last-sync-url is called "default" for the display list.
  **
  ** The last-sync-url might be duplicated into one of the sync-url:NAME
  ** entries.  Thus, when doing a "fossil sync --all" or an autosync with
  ** autosync=all, each sync-url:NAME entry is checked to see if it is the
  ** same as last-sync-url and if it is then that entry is skipped.
  */

  if( g.argc==2 ){
    /* "fossil remote" with no arguments:  Show the last sync URL. */
    zUrl = db_get("last-sync-url", 0);
    if( zUrl==0 ){
      fossil_print("off\n");
    }else{
      url_parse(zUrl, 0);
      fossil_print("%s\n", g.url.canonical);
    }
    return;
  }
  zArg = g.argv[2];
  nArg = (int)strlen(zArg);
  if( strcmp(zArg,"off")==0 ){
    /* fossil remote off
    ** Forget the last-sync-URL and its password
    */
    if( g.argc!=3 ) usage("off");
remote_delete_default:
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
      "DELETE FROM config WHERE name GLOB 'last-sync-*';"
    );
    db_protect_pop();
    return;
  }
  if( strncmp(zArg, "list", nArg)==0 || strcmp(zArg,"ls")==0 ){
    Stmt q;
    if( g.argc!=3 ) usage("list");
    db_prepare(&q,
      "SELECT 'default', value FROM config WHERE name='last-sync-url'"
      " UNION ALL "
      "SELECT substr(name,10), value FROM config"
      " WHERE name GLOB 'sync-url:*'"
      " ORDER BY 1"
    );
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%-18s %s\n", db_column_text(&q,0), db_column_text(&q,1));
    }
    db_finalize(&q);
    return;
  }
  if( strcmp(zArg, "add")==0 ){
    char *zName;
    char *zUrl;
    UrlData x;
    if( g.argc!=5 ) usage("add NAME URL");
    memset(&x, 0, sizeof(x));
    zName = g.argv[3];
    zUrl = g.argv[4];
    if( strcmp(zName,"default")==0 ){
      fossil_fatal("update the \"default\" remote-url with 'fossil remote REF'"
          "\nsee 'fossil help remote' for complete usage information");
    }
    db_begin_write();
    if( fossil_strcmp(zUrl,"default")==0 ){
      x.canonical = db_get("last-sync-url",0);
      x.passwd = unobscure(db_get("last-sync-pw",0));
    }else{
      url_parse_local(zUrl, URL_PROMPT_PW|URL_USE_CONFIG, &x);
    }
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec(
       "REPLACE INTO config(name, value, mtime)"
       " VALUES('sync-url:%q',%Q,now())",
       zName, x.canonical
    );
    db_multi_exec(
       "REPLACE INTO config(name, value, mtime)"
       " VALUES('sync-pw:%q',obscure(%Q),now())",
       zName, x.passwd
    );
    db_protect_pop();
    db_commit_transaction();
    return;
  }
  if( strncmp(zArg, "delete", nArg)==0 ){
    char *zName;
    if( g.argc!=4 ) usage("delete NAME");
    zName = g.argv[3];
    if( strcmp(zName,"default")==0 ) goto remote_delete_default;
    db_begin_write();
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec("DELETE FROM config WHERE name glob 'sync-url:%q'", zName);
    db_multi_exec("DELETE FROM config WHERE name glob 'sync-pw:%q'", zName);
    db_protect_pop();
    db_commit_transaction();
    return;
  }
  if( strncmp(zArg, "hyperlink", nArg)==0
   || (nArg==2 && strcmp(zArg, "ui")==0)
  ){
    char *zBase;
    char *zUuid;
    Blob fname;
    Blob url;
    char *zSubCmd = g.argv[2][0]=='u' ? "ui" : "hyperlink";
    if( !db_table_exists("localdb","vvar") ){
      fossil_fatal("the \"remote %s\" command only works from "
                   "within an open check-out", zSubCmd);
    }
    zUrl = db_get("last-sync-url", 0);
    if( zUrl==0 ){
      zUrl = "http://localhost:8080/";
    }
    url_parse(zUrl, 0);
    if( g.url.isFile ){
      url_parse("http://localhost:8080/", 0);
    }
    zBase = url_nouser(&g.url);
    blob_init(&url, 0, 0);
    if( g.argc==3 ){
      blob_appendf(&url, "%s/info/%!S",
        zBase,
        db_text("???",
          "SELECT uuid FROM blob, vvar"
          " WHERE blob.rid=0+vvar.value"
          "   AND vvar.name='checkout';"
        ));
    }else{
      blob_init(&fname, 0, 0);
      file_tree_name(g.argv[3], &fname, 0, 1);
      zUuid = db_text(0,
        "SELECT uuid FROM files_of_checkin"
        " WHERE checkinID=(SELECT value FROM vvar WHERE name='checkout')"
        "   AND filename=%Q",
        blob_str(&fname)
      );
      if( zUuid==0 ){
        fossil_fatal("not a managed file: \"%s\"", g.argv[3]);
      }
      blob_appendf(&url, "%s/info/%S",zBase,zUuid);
      if( g.argc>4 ){
        int ln1 = atoi(g.argv[4]);
        if( ln1<=0 || sqlite3_strglob("*[^0-9]*",g.argv[4])==0 ){
          fossil_fatal("\"%s\" is not a valid line number", g.argv[4]);
        }
        if( g.argc>5 ){
          int ln2 = atoi(g.argv[5]);
          if( ln2==0 || sqlite3_strglob("*[^0-9]*",g.argv[5])==0 ){
            fossil_fatal("\"%s\" is not a valid line number", g.argv[5]);
          }
          if( ln2<=ln1 ){
            fossil_fatal("second line number should be greater than the first");
          }
          blob_appendf(&url,"?ln=%d,%d", ln1, ln2);
        }else{
          blob_appendf(&url,"?ln=%d", ln1);
        }
      }
      if( g.argc>6 ){
        usage(mprintf("%s ?FILENAME? ?LINENUMBER? ?LINENUMBER?", zSubCmd));
      }
    }
    if( g.argv[2][0]=='u' ){
      char *zCmd;
      zCmd = mprintf("%s %!$ &", fossil_web_browser(), blob_str(&url));
      fossil_system(zCmd);
    }else{
      fossil_print("%s\n", blob_str(&url));
    }
    return;
  }
  if( strncmp(zArg, "scrub", nArg)==0 ){
    if( g.argc!=3 ) usage("scrub");
    db_begin_write();
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec("DELETE FROM config WHERE name glob 'sync-pw:*'");
    db_multi_exec("DELETE FROM config WHERE name = 'last-sync-pw'");
    db_protect_pop();
    db_commit_transaction();
    return;
  }
  if( strncmp(zArg, "config-data", nArg)==0 ){
    /* Undocumented command:  "fossil remote config-data [-show-passwords]"
    **
    ** Show the CONFIG table entries that relate to remembering remote URLs
    */
    Stmt q;
    int n;
    sqlite3_create_function(g.db, "unobscure", 1, SQLITE_UTF8, &g.db,
                            db_obscure, 0, 0);
    n = db_int(13,
       "SELECT max(length(name))"
       "  FROM config"
       " WHERE name GLOB 'sync-*:*'"
          " OR name GLOB 'last-sync-*'"
          " OR name GLOB 'parent-project-*'"
    );
    db_prepare(&q,
      "SELECT name,"
      "  CASE WHEN name NOT LIKE '%%sync-pw%%' AND name<>'parent-project-pw'"
      "       THEN value"
      "       WHEN %d THEN unobscure(value)"
      "       ELSE printf('%%.*c',length(value)/2-1,'*') END"
      "  FROM config"
      " WHERE name GLOB 'sync-*:*'"
         " OR name GLOB 'last-sync-*'"
         " OR name GLOB 'parent-project-*'"
      " ORDER BY name LIKE '%%sync-pw%%' OR name='parent-project-pw', name",
      showPw
    );
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%-*s  %s\n",
        n, db_column_text(&q,0),
        db_column_text(&q,1)
      );
    }
    db_finalize(&q);
    return;
  }
  if( sqlite3_strlike("http://%",zArg,0)==0
   || sqlite3_strlike("https://%",zArg,0)==0
   || sqlite3_strlike("ssh:%",zArg,0)==0
   || sqlite3_strlike("file:%",zArg,0)==0
   || db_exists("SELECT 1 FROM config WHERE name='sync-url:%q'",zArg)
  ){
    db_unset("last-sync-url", 0);
    db_unset("last-sync-pw", 0);
    url_parse(g.argv[2], URL_REMEMBER|URL_PROMPT_PW|
                         URL_USE_CONFIG|URL_ASK_REMEMBER_PW);
    url_remember();
    return;
  }
  fossil_fatal("unknown command \"%s\" - should be a URL or one of: "
               "add delete hyperlink list off scrub", zArg);
}

/*
** COMMAND: remote-url
** COMMAND: backup*
**
** Usage: %fossil remote-url ?URL|off?
** Usage: %fossil backup ?OPTIONS? FILE|DIRECTORY
**
** Query and/or change the default server URL used by the "pull", "push",
** and "sync" commands.
** Make a backup of the repository into the named file or into the named
** directory.  This backup is guaranteed to be consistent even if there are
** concurrent changes taking place on the repository.  In other words, it
** is safe to run "fossil backup" on a repository that is in active use.
**
** The remote-url is set automatically by a "clone" command or by any
** "sync", "push", or "pull" command that specifies an explicit URL.
** The default remote-url is used by auto-syncing and by "sync", "push",
** "pull" that omit the server URL.
** Only the main repository database is backed up by this command.  The
** open check-out file (if any) is not saved.  Nor is the global configuration
** database.
**
** See also: clone, push, pull, sync
** Options:
**    --overwrite              OK to overwrite an existing file
**    -R NAME                  Filename of the repository to backup
*/
void remote_url_cmd(void){
  char *zUrl;
void backup_cmd(void){
  char *zDest;
  db_find_and_open_repository(1);
  if( g.argc!=2 && g.argc!=3 ){
    usage("remote-url ?URL|off?");
  }
  if( g.argc==3 ){
    if( strcmp(g.argv[2],"off")==0 ){
      db_unset("last-sync-url", 0);
      db_unset("last-sync-pw", 0);
    }else{
      url_parse(g.argv[2]);
      if( g.urlUser && g.urlPasswd==0 ){
  int bOverwrite = 0;
  db_find_and_open_repository(OPEN_ANY_SCHEMA, 0);
  bOverwrite = find_option("overwrite",0,0)!=0;
  verify_all_options();
  if( g.argc!=3 ){
    usage("FILE|DIRECTORY");
        url_prompt_for_password();
      }
  }
      db_set("last-sync-url", g.urlCanonical, 0);
      if( g.urlPasswd ){
  zDest = g.argv[2];
        db_set("last-sync-pw", g.urlPasswd, 0);
      }else{
        db_unset("last-sync-pw", 0);
      }
    }
  if( file_isdir(zDest, ExtFILE)==1 ){
    zDest = mprintf("%s/%s", zDest, file_tail(g.zRepositoryName));
  }
  if( file_isfile(zDest, ExtFILE) ){
    if( bOverwrite ){
      if( file_delete(zDest) ){
        fossil_fatal("unable to delete old copy of \"%s\"", zDest);
      }
  }
  zUrl = db_get("last-sync-url", 0);
  if( zUrl==0 ){
    printf("off\n");
    return;
  }else{
    }else{
    url_parse(zUrl);
    printf("%s\n", g.urlCanonical);
  }
      fossil_fatal("backup \"%s\" already exists", zDest);
    }
  }
  db_unprotect(PROTECT_ALL);
  db_multi_exec("VACUUM repository INTO %Q", zDest);
}
Changes to src/tag.c.
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/*
** Propagate the tag given by tagid to the children of pid.
**
** This routine assumes that tagid is a tag that should be
** propagated and that the tag is already present in pid.
**
** If tagtype is 2 then the tag is being propagated from an
** ancestor node.  If tagtype is 0 it means a branch tag is
** being cancelled.
** ancestor node.  If tagtype is 0 it means a propagating tag is
** being blocked.
*/
void tag_propagate(
static void tag_propagate(
  int pid,             /* Propagate the tag to children of this node */
  int tagid,           /* Tag to propagate */
  int tagType,         /* 2 for a propagating tag.  0 for an antitag */
  int origId,          /* Artifact of tag, when tagType==2 */
  const char *zValue,  /* Value of the tag.  Might be NULL */
  double mtime         /* Timestamp on the tag */
){
  PQueue queue;
  Stmt s, ins, eventupdate;
  PQueue queue;        /* Queue of check-ins to be tagged */
  Stmt s;              /* Query the children of :pid to which to propagate */
  Stmt ins;            /* INSERT INTO tagxref */
  Stmt eventupdate;    /* UPDATE event */

  assert( tagType==0 || tagType==2 );
  pqueue_init(&queue);
  pqueue_insert(&queue, pid, 0.0);
  db_prepare(&s, 
  pqueuex_init(&queue);
  pqueuex_insert(&queue, pid, 0.0);

  /* Query for children of :pid to which to propagate the tag.
  ** Three returns:  (1) rid of the child.  (2) timestamp of child.
  ** (3) True to propagate or false to block.
  */
  db_prepare(&s,
     "SELECT cid, plink.mtime,"
     "       coalesce(srcid=0 AND tagxref.mtime<:mtime, %d) AS doit"
     "  FROM plink LEFT JOIN tagxref ON cid=rid AND tagid=%d"
     " WHERE pid=:pid AND isprim",
     tagType!=0, tagid
     tagType==2, tagid
  );
  db_bind_double(&s, ":mtime", mtime);

  if( tagType==2 ){
    /* Set the propagated tag marker on check-in :rid */
    db_prepare(&ins,
       "REPLACE INTO tagxref(tagid, tagtype, srcid, origid, value, mtime, rid)"
       "VALUES(%d,2,0,%d,%Q,:mtime,:rid)",
       tagid, origId, zValue
    );
    db_bind_double(&ins, ":mtime", mtime);
  }else{
    /* Remove all references to the tag from check-in :rid */
    zValue = 0;
    db_prepare(&ins,
       "DELETE FROM tagxref WHERE tagid=%d AND rid=:rid", tagid
    );
  }
  if( tagid==TAG_BGCOLOR ){
    db_prepare(&eventupdate,
      "UPDATE event SET bgcolor=%Q WHERE objid=:rid", zValue
    );
  }
  while( (pid = pqueue_extract(&queue))!=0 ){
  while( (pid = pqueuex_extract(&queue))!=0 ){
    db_bind_int(&s, ":pid", pid);
    while( db_step(&s)==SQLITE_ROW ){
      int doit = db_column_int(&s, 2);
      if( doit ){
        int cid = db_column_int(&s, 0);
        double mtime = db_column_double(&s, 1);
        pqueue_insert(&queue, cid, mtime);
        pqueuex_insert(&queue, cid, mtime);
        db_bind_int(&ins, ":rid", cid);
        db_step(&ins);
        db_reset(&ins);
        if( tagid==TAG_BGCOLOR ){
          db_bind_int(&eventupdate, ":rid", cid);
          db_step(&eventupdate);
          db_reset(&eventupdate);
        }
        if( tagid==TAG_BRANCH ){
          leaf_eventually_check(cid);
        }
      }
    }
    db_reset(&s);
  }
  pqueue_clear(&queue);
  pqueuex_clear(&queue);
  db_finalize(&ins);
  db_finalize(&s);
  if( tagid==TAG_BGCOLOR ){
    db_finalize(&eventupdate);
  }
}

/*
** Propagate all propagatable tags in pid to its children.
** Propagate all propagatable tags in pid to the children of pid.
*/
void tag_propagate_all(int pid){
  Stmt q;
  db_prepare(&q,
     "SELECT tagid, tagtype, mtime, value, origid FROM tagxref"
     " WHERE rid=%d"
     " WHERE rid=%d",
     "   AND (tagtype=0 OR tagtype=2)",
     pid
  );
  while( db_step(&q)==SQLITE_ROW ){
    int tagid = db_column_int(&q, 0);
    int tagtype = db_column_int(&q, 1);
    double mtime = db_column_double(&q, 2);
    const char *zValue = db_column_text(&q, 3);
    int origid = db_column_int(&q, 4);
    if( tagtype==1 ) tagtype = 0;
    tag_propagate(pid, tagid, tagtype, origid, zValue, mtime);
  }
  db_finalize(&q);
}

/*
** Get a tagid for the given TAG.  Create a new tag if necessary
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  }
  return id;
}

/*
** Insert a tag into the database.
**
** Also translate zTag into a tagid and return the tagid.  (In other words
** if zTag is "bgcolor" then return TAG_BGCOLOR.)
*/
int tag_insert(
  const char *zTag,        /* Name of the tag (w/o the "+" or "-" prefix */
  int tagtype,             /* 0:cancel  1:singleton  2:propagated */
  const char *zValue,      /* Value if the tag is really a property */
  int srcId,               /* Artifact that contains this tag */
  double mtime,            /* Timestamp.  Use default if <=0.0 */
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  db_bind_double(&s, ":mtime", mtime);
  rc = db_step(&s);
  db_finalize(&s);
  if( rc==SQLITE_ROW ){
    /* Another entry that is more recent already exists.  Do nothing */
    return tagid;
  }
  db_prepare(&s, 
  db_prepare(&s,
    "REPLACE INTO tagxref(tagid,tagtype,srcId,origid,value,mtime,rid)"
    " VALUES(%d,%d,%d,%d,%Q,:mtime,%d)",
    tagid, tagtype, srcId, rid, zValue, rid
  );
  db_bind_double(&s, ":mtime", mtime);
  db_step(&s);
  db_finalize(&s);
  if( tagid==TAG_BRANCH ) leaf_eventually_check(rid);
  if( tagtype==0 ){
    zValue = 0;
  }
  zCol = 0;
  switch( tagid ){
    case TAG_BGCOLOR: {
      zCol = "bgcolor";
      break;
    }
    case TAG_COMMENT: {
      zCol = "ecomment";
      break;
    }
    case TAG_USER: {
      zCol = "euser";
      break;
    }
    case TAG_PRIVATE: {
      db_multi_exec(
        "INSERT OR IGNORE INTO private(rid) VALUES(%d);",
        rid
      );
  }
    }
  }
  if( zCol ){
    db_multi_exec("UPDATE event SET %s=%Q WHERE objid=%d", zCol, zValue, rid);
    db_multi_exec("UPDATE event SET \"%w\"=%Q WHERE objid=%d",
                  zCol, zValue, rid);
    if( tagid==TAG_COMMENT ){
      char *zCopy = mprintf("%s", zValue);
      wiki_extract_links(zCopy, rid, 0, mtime, 1, WIKI_INLINE);
      backlink_extract(zCopy, MT_NONE, rid, BKLNK_COMMENT, mtime, 1);
      free(zCopy);
    }
  }
  if( tagid==TAG_DATE ){
    db_multi_exec("UPDATE event SET mtime=julianday(%Q) WHERE objid=%d",
    db_multi_exec("UPDATE event "
                  "   SET mtime=julianday(%Q),"
                  "       omtime=coalesce(omtime,mtime)"
                  " WHERE objid=%d",
                  zValue, rid);
  }
  if( tagid==TAG_PARENT && tagtype==1 ){
    manifest_reparent_checkin(rid, zValue);
  }
  if( tagtype==0 || tagtype==2 ){
    tag_propagate(rid, tagid, tagtype, rid, zValue, mtime);
  if( tagtype==1 ) tagtype = 0;
  tag_propagate(rid, tagid, tagtype, rid, zValue, mtime);
  }
  return tagid;
}


/*
** COMMAND: test-tag
**
** %fossil test-tag (+|*|-)TAGNAME ARTIFACT-ID ?VALUE?
** Usage: %fossil test-tag (+|*|-)TAGNAME ARTIFACT-ID ?VALUE?
**
** Add a tag or anti-tag to the rebuildable tables of the local repository.
** No tag artifact is created so the new tag is erased the next
** time the repository is rebuilt.  This routine is for testing
** use only.
*/
void testtag_cmd(void){
  const char *zTag;
  const char *zValue;
  int rid;
  int tagtype;
  db_must_be_within_tree();
  if( g.argc!=4 && g.argc!=5 ){
    usage("TAGNAME ARTIFACT-ID ?VALUE?");
  }
  zTag = g.argv[2];
  switch( zTag[0] ){
    case '+':  tagtype = 1;  break;
    case '*':  tagtype = 2;  break;
    case '-':  tagtype = 0;  break;
    default:   
    default:
      fossil_fatal("tag should begin with '+', '*', or '-'");
      return;
  }
  rid = name_to_rid(g.argv[3]);
  if( rid==0 ){
    fossil_fatal("no such object: %s", g.argv[3]);
  }
  g.markPrivate = content_is_private(rid);
  zValue = g.argc==5 ? g.argv[4] : 0;
  db_begin_transaction();
  tag_insert(zTag, tagtype, zValue, -1, 0.0, rid);
  db_end_transaction(0); 
  db_end_transaction(0);
}

/*
** OR this value into the tagtype argument to tag_add_artifact to
** cause the tag to be displayed on standard output rather than be
** inserted.  Used for --dry-run options and debugging.
*/
#if INTERFACE
#define TAG_ADD_DRYRUN  0x04
#endif

/*
** Add a control record to the repository that either creates
** or cancels a tag.
**
** tagtype should normally be 0, 1, or 2.  But if the TAG_ADD_DRYRUN bit
** is also set, then simply print the text of the tag on standard output
** (for testing purposes) rather than create the tag.
*/
void tag_add_artifact(
  const char *zPrefix,        /* Prefix to prepend to tag name */
  const char *zTagname,       /* The tag to add or cancel */
  const char *zObjName,       /* Name of object attached to */
  const char *zValue,         /* Value for the tag.  Might be NULL */
  int tagtype                 /* 0:cancel 1:singleton 2:propagated */
  int tagtype,                /* 0:cancel 1:singleton 2:propagated */
  const char *zDateOvrd,      /* Override date string */
  const char *zUserOvrd       /* Override user name */
){
  int rid;
  int nrid;
  char *zDate;
  Blob uuid;
  Blob ctrl;
  Blob cksum;
  static const char zTagtype[] = { '-', '+', '*' };
  int dryRun = 0;

  if( tagtype & TAG_ADD_DRYRUN ){
    tagtype &= ~TAG_ADD_DRYRUN;
    dryRun = 1;
  }
  assert( tagtype>=0 && tagtype<=2 );
  user_select();
  blob_zero(&uuid);
  blob_append(&uuid, zObjName, -1);
  if( name_to_uuid(&uuid, 9) ){
  if( name_to_uuid(&uuid, 9, "*") ){
    fossil_fatal("%s", g.zErrMsg);
    return;
  }
  rid = name_to_rid(blob_str(&uuid));
  g.markPrivate = content_is_private(rid);
  blob_zero(&ctrl);

#if 0
  if( validate16(zTagname, strlen(zTagname)) ){
    fossil_fatal(
       "invalid tag name \"%s\" - might be confused with"
       " a hexadecimal artifact ID",
       zTagname
    );
  }
#endif
  zDate = db_text(0, "SELECT datetime('now')");
  zDate = date_in_standard_format(zDateOvrd ? zDateOvrd : "now");
  zDate[10] = 'T';
  blob_appendf(&ctrl, "D %s\n", zDate);
  blob_appendf(&ctrl, "T %c%s%F %b",
               zTagtype[tagtype], zPrefix, zTagname, &uuid);
  if( tagtype>0 && zValue && zValue[0] ){
    blob_appendf(&ctrl, " %F\n", zValue);
  }else{
    blob_appendf(&ctrl, "\n");
  }
  blob_appendf(&ctrl, "U %F\n", g.zLogin);
  blob_appendf(&ctrl, "U %F\n", zUserOvrd ? zUserOvrd : login_name());
  md5sum_blob(&ctrl, &cksum);
  blob_appendf(&ctrl, "Z %b\n", &cksum);
  if( dryRun ){
    fossil_print("%s", blob_str(&ctrl));
    blob_reset(&ctrl);
  }else{
  nrid = content_put(&ctrl, 0, 0);
  manifest_crosslink(nrid, &ctrl);
}

    nrid = content_put(&ctrl);
    manifest_crosslink(nrid, &ctrl, MC_PERMIT_HOOKS);
  }
  assert( blob_is_reset(&ctrl) );
  if( g.localOpen ){
    manifest_to_disk(rid);
  }
}

/*
** If zTag is NULL or valid for use as a tag for the `tag add` and
** `tag cancel` commands, returns without side effects, else emits a
** fatal error message. We reject certain prefixes to avoid that
** clients cause undue grief by improperly tagging artifacts as being,
** e.g., wiki pages or tickets.
**
** Note that we intentionally allow the "sym-" prefix, partly for
** historical compatibility and partly because it can be applied
** properly, whereas the other reserved name types have special
** meanings for fossil and cannot be sensibly manually manipulated.
*/
static void tag_cmd_tagname_check(const char *zTag){
  if(zTag && *zTag &&
     (strncmp(zTag,"wiki-",5)==0
      || strncmp(zTag,"tkt-",4)==0
      || strncmp(zTag,"event-",6)==0)){
    fossil_fatal("Invalid prefix for tag name: %s", zTag);
  }
}

/*
** COMMAND: tag
**
** Usage: %fossil tag SUBCOMMAND ...
**
** Run various subcommands to control tags and properties
** Run various subcommands to control tags and properties.
**
**     %fossil tag add ?--raw? ?--propagate? TAGNAME CHECK-IN ?VALUE?
** > fossil tag add ?OPTIONS? TAGNAME ARTIFACT-ID ?VALUE?
**
**         Add a new tag or property to CHECK-IN. The tag will
**         be usable instead of a CHECK-IN in commands such as
**         update and merge.  If the --propagate flag is present,
**         the tag value propages to all descendants of CHECK-IN
**         Add a new tag or property to an artifact referenced by
**         ARTIFACT-ID. For check-ins, the tag will be usable instead
**         of a CHECK-IN in commands such as update and merge. If the
**         --propagate flag is present and ARTIFACT-ID refers to a
**         wiki page, forum post, technote, or check-in, the tag
**         propagates to all descendants of that artifact.
**
**         Options:
**           --date-override DATETIME   Set date and time added
**           -n|--dry-run               Display the tag text, but do not
**                                      actually insert it into the database
**           --propagate                Propagating tag
**           --raw                      Raw tag name. Ignored for
**                                      non-CHECK-IN artifacts.
**           --user-override USER       Name USER when adding the tag
**
**         The --date-override and --user-override options support
**         importing history from other SCM systems. DATETIME has
**         the form 'YYYY-MMM-DD HH:MM:SS'.
**
**         Note that fossil uses some tag prefixes internally and this
**         command will reject tags with these prefixes to avoid
**         causing problems or confusion: "wiki-", "tkt-", "event-".
**
**     %fossil tag cancel ?--raw? TAGNAME CHECK-IN
** > fossil tag cancel ?--raw? TAGNAME ARTIFACT-ID
**
**         Remove the tag TAGNAME from the artifact referenced by
**         ARTIFACT-ID, and also remove the propagation of the tag to
**         any descendants.  Use the the -n|--dry-run option to see
**         what would have happened. Certain tag name prefixes are
**         forbidden, as documented for the 'add' subcommand.
**
**         Options:
**           --date-override DATETIME    Set date and time deleted
**           -n|--dry-run                Display the control artifact, but do
**                                       not insert it into the database
**           --raw                       Raw tag name. Ignored for
**                                       non-CHECK-IN artifacts.
**         Remove the tag TAGNAME from CHECK-IN, and also remove
**         the propagation of the tag to any descendants.
**           --user-override USER        Name USER when deleting the tag
**
**     %fossil tag find ?--raw? TAGNAME
** > fossil tag find ?OPTIONS? TAGNAME
**
**         List all objects that use TAGNAME.
**
**         List all check-ins that use TAGNAME
**         Options:
**           -n|--limit N    Limit to N results
**           --raw           Interprets tag as a raw name instead of a
**                           branch name and matches any type of artifact.
**                           Changes the output to include only the
**                           hashes of matching objects.
**           -t|--type TYPE  One of: ci (check-in), w (wiki),
**                           e (event/technote), f (forum post),
**                           t (ticket). Default is all types. Ignored
**                           if --raw is used.
**
**     %fossil tag list ?--raw? ?CHECK-IN?
** > fossil tag list|ls ?OPTIONS? ?ARTIFACT-ID?
**
**         List all tags, or if CHECK-IN is supplied, list
**         all tags and their values for CHECK-IN.
**         List all tags or, if ARTIFACT-ID is supplied, all tags and
**         their values for that artifact. The tagtype option accepts
**         one of: propagated, singleton, cancel.  For historical
**         scripting compatibility, the internal tag types "wiki-",
**         "tkt-", and "event-" (technote) are elided by default
**         unless the --raw or --prefix options are used.
**
**         Options:
**           -v|--inverse    Inverse the meaning of --tagtype TYPE
**           --prefix        List only tags with the given prefix
**                           Fossil-internal prefixes include "sym-"
**                           (branch name), "wiki-", "event-"
**                           (technote), and "tkt-" (ticket). The
**                           prefix is stripped from the resulting
**                           list unless --raw is provided. Ignored if
**                           ARTIFACT-ID is provided.
**           --raw           List raw names of tags
**           --sep SEP       Separator when concatenating values
**           --tagtype TYPE  List only tags of type TYPE, which must
**                           be one of: cancel, singleton, propagated
**           --values        List tag values
**                           If --sep is supplied, list all values of a tag on
**                           the same line, separated by SEP; otherwise list
**                           each value on its own line.
**
** The option --raw allows the manipulation of all types of tags
** used for various internal purposes in fossil. It also shows
** "cancel" tags for the "find" and "list" subcommands. You should
** not use this option to make changes unless you are sure what
** you are doing.
**
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**   fossil update tag:decaf
**
** will assume that "decaf" is a tag/branch name.
**
*/
void tag_cmd(void){
  int n;
  int fRaw = find_option("raw","",0)!=0;
  int fPropagate = find_option("propagate","",0)!=0;
  const char *zPrefix = fRaw ? "" : "sym-";

  db_find_and_open_repository(1);
  db_find_and_open_repository(0, 0);
  if( g.argc<3 ){
    goto tag_cmd_usage;
  }
  n = strlen(g.argv[2]);
  if( n==0 ){
    goto tag_cmd_usage;
  }

  if( strncmp(g.argv[2],"add",n)==0 ){
    char *zValue;
    int dryRun = 0;
    int fRaw = find_option("raw","",0)!=0;
    const char *zPrefix = "";
    int fPropagate = find_option("propagate","",0)!=0;
    const char *zDateOvrd = find_option("date-override",0,1);
    const char *zUserOvrd = find_option("user-override",0,1);
    const char *zTag;
    const char *zObjId;
    int objType;
    if( find_option("dry-run","n",0)!=0 ) dryRun = TAG_ADD_DRYRUN;
    if( g.argc!=5 && g.argc!=6 ){
      usage("add ?--raw? ?--propagate? TAGNAME CHECK-IN ?VALUE?");
      usage("add ?options? TAGNAME ARTIFACT-ID ?VALUE?");
    }
    zTag = g.argv[3];
    tag_cmd_tagname_check(zTag);
    zObjId = g.argv[4];
    zValue = g.argc==6 ? g.argv[5] : 0;
    objType = whatis_rid_type(symbolic_name_to_rid(zObjId, 0));
    switch(objType){
      case 0:
        fossil_fatal("Cannot resolve artifact ID: %s", zObjId);
        break;
      case CFTYPE_MANIFEST:
        zPrefix = fRaw ? "" : "sym-";
        break;
      default: break;
    }
    db_begin_transaction();
    tag_add_artifact(zPrefix, g.argv[3], g.argv[4], zValue, 1+fPropagate);
    tag_add_artifact(zPrefix, zTag, zObjId, zValue,
                     1+fPropagate+dryRun,zDateOvrd,zUserOvrd);
    db_end_transaction(0);
  }else

  if( strncmp(g.argv[2],"branch",n)==0 ){
    fossil_fatal("the \"fossil tag branch\" command is discontinued\n"
                 "Use the \"fossil branch new\" command instead.");
  }else

  if( strncmp(g.argv[2],"cancel",n)==0 ){
    int dryRun = 0;
    int fRaw = find_option("raw","",0)!=0;
    const char *zPrefix = "";
    const char *zDateOvrd = find_option("date-override",0,1);
    const char *zUserOvrd = find_option("user-override",0,1);
    const char *zTag;
    const char *zObjId;
    int objType;
    if( find_option("dry-run","n",0)!=0 ) dryRun = TAG_ADD_DRYRUN;
    if( g.argc!=5 ){
      usage("cancel ?--raw? TAGNAME CHECK-IN");
      usage("cancel ?options? TAGNAME ARTIFACT-ID");
    }
    zTag = g.argv[3];
    tag_cmd_tagname_check(zTag);
    zObjId = g.argv[4];
    objType = whatis_rid_type(symbolic_name_to_rid(zObjId, 0));
    switch(objType){
      case 0:
        fossil_fatal("Cannot resolve artifact ID: %s", zObjId);
        break;
      case CFTYPE_MANIFEST:
        zPrefix = fRaw ? "" : "sym-";
        break;
      default: break;
    }
    db_begin_transaction();
    tag_add_artifact(zPrefix, g.argv[3], g.argv[4], 0, 0);
    tag_add_artifact(zPrefix, zTag, zObjId, 0, dryRun,
                     zDateOvrd, zUserOvrd);
    db_end_transaction(0);
  }else

  if( strncmp(g.argv[2],"find",n)==0 ){
    Stmt q;
    int fRaw = find_option("raw","",0)!=0;
    const char *zFindLimit = find_option("limit","n",1);
    const int nFindLimit = zFindLimit ? atoi(zFindLimit) : -2000;
    const char *zType = find_option("type","t",1);
    Blob sql = empty_blob;
    if( zType==0 || zType[0]==0 ) zType = "*";
    if( g.argc!=4 ){
      usage("find ?--raw? TAGNAME");
      usage("find ?--raw? ?-t|--type TYPE? ?-n|--limit #? TAGNAME");
    }
    if( fRaw ){
      db_prepare(&q,
      blob_append_sql(&sql,
        "SELECT blob.uuid FROM tagxref, blob"
        " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
        "   AND tagxref.tagtype>0"
        "   AND blob.rid=tagxref.rid",
        g.argv[3]
      );
      if( nFindLimit>0 ){
        blob_append_sql(&sql, " LIMIT %d", nFindLimit);
      }
      db_prepare(&q, "%s", blob_sql_text(&sql));
      blob_reset(&sql);
      while( db_step(&q)==SQLITE_ROW ){
        printf("%s\n", db_column_text(&q, 0));
        fossil_print("%s\n", db_column_text(&q, 0));
      }
      db_finalize(&q);
    }else{
      int tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'",
      int tagid = db_int(0, "SELECT tagid FROM tag "
                         "WHERE tagname='%s%q'",
                         (zType && 'c'==zType[0])
                         ? "sym-" : ""/*safe-for-%s*/,
                         g.argv[3]);
      if( tagid>0 ){
        db_prepare(&q,
        blob_append_sql(&sql,
          "%s"
          "  AND event.type GLOB '%q'"
          "  AND blob.rid IN ("
                    " SELECT rid FROM tagxref"
                    "  WHERE tagtype>0 AND tagid=%d"
                    ")"
          " ORDER BY event.mtime DESC",
          timeline_query_for_tty(), tagid
          " ORDER BY event.mtime DESC /*sort*/",
          timeline_query_for_tty(), zType, tagid
        );
        db_prepare(&q, "%s", blob_sql_text(&sql));
        blob_reset(&sql);
        print_timeline(&q, 2000);
        print_timeline(&q, nFindLimit, 79, 0, 0);
        db_finalize(&q);
      }
    }
  }else

  if( strncmp(g.argv[2],"list",n)==0 ){
  if(( strncmp(g.argv[2],"list",n)==0 )||( strncmp(g.argv[2],"ls",n)==0 )){
    Stmt q;
    const int fRaw = find_option("raw","",0)!=0;
    const char *zTagType = find_option("tagtype","t",1);
    const int fInverse = find_option("inverse","v",0)!=0;
    const char *zTagPrefix = find_option("prefix","",1);
    int nTagType = fRaw ? -1 : 0;
    int fValues = find_option("values","",0)!=0;
    const char *zSep = find_option("sep","",1);


    if( zTagType!=0 ){
      int l = strlen(zTagType);
      if( strncmp(zTagType,"cancel",l)==0 ){
        nTagType = 0;
      }else if( strncmp(zTagType,"singleton",l)==0 ){
        nTagType = 1;
      }else if( strncmp(zTagType,"propagated",l)==0 ){
        nTagType = 2;
      }else{
        fossil_fatal("unrecognized tag type");
      }
    }
    if( g.argc==3 ){
      const int nTagPrefix = zTagPrefix ? (int)strlen(zTagPrefix) : 0;
      if( !fValues ){
      db_prepare(&q, 
        "SELECT tagname FROM tag"
        " WHERE EXISTS(SELECT 1 FROM tagxref"
        "               WHERE tagid=tag.tagid"
        "                 AND tagtype>0)"
        " ORDER BY tagname"
      );
        db_prepare(&q,
          "SELECT tagname FROM tag"
          " WHERE EXISTS(SELECT 1 FROM tagxref"
          "               WHERE tagid=tag.tagid"
          "                 AND tagtype%s%d)"
          " AND CASE WHEN %Q IS NULL THEN 1 ELSE tagname GLOB %Q||'*' "
          " END ORDER BY tagname COLLATE uintnocase",
          zTagType!=0 ? (fInverse!=0?"<>":"=") : ">"/*safe-for-%s*/,
          nTagType, zTagPrefix, zTagPrefix
        );
      }else{
        if( zSep ){
          db_prepare(&q,
            /* work around group_concat() with DISTINCT and custom separator */
            "SELECT tagname,"
            "  rtrim(replace(group_concat(DISTINCT value||'@!' "
            "                             ORDER BY value ASC), '@!,', %Q),'@!')"
            " FROM tagxref, tag"
            " WHERE tagxref.tagid=tag.tagid AND tagtype%s%d"
            " AND CASE WHEN %Q IS NULL THEN 1 ELSE tagname GLOB %Q||'*' END"
            " GROUP BY tagname"
            " ORDER BY tagname COLLATE uintnocase",
            ( zSep && strlen(zSep)>0 ) ? zSep : ",",
            zTagType!=0 ? (fInverse!=0?"<>":"=") : ">"/*safe-for-%s*/,
            nTagType, zTagPrefix, zTagPrefix
          );
        }else{
          db_prepare(&q,
            "SELECT DISTINCT tagname, value"
            " FROM tagxref, tag"
            " WHERE tagxref.tagid=tag.tagid AND tagtype%s%d"
            " AND CASE WHEN %Q IS NULL THEN 1 ELSE tagname GLOB %Q||'*' END"
            " ORDER BY tagname, value COLLATE uintnocase",
            zTagType!=0 ? (fInverse!=0?"<>":"=") : ">"/*safe-for-%s*/,
            nTagType, zTagPrefix, zTagPrefix
          );
        }
      }
      while( db_step(&q)==SQLITE_ROW ){
        const char *zName = db_column_text(&q, 0);
        const char *zValue = db_column_text(&q, 1);
        int nWidth = fValues ? 20 : 0;
        const char *zzValue = (fValues && zValue) ? mprintf(" %s", zValue) : "";
        if( fRaw ){
          printf("%s\n", zName);
          fossil_print("%-*s%s\n", nWidth, zName, zzValue);
        }else if( nTagPrefix>0 ){
          assert(db_column_bytes(&q,0)>=nTagPrefix);
          fossil_print("%-*s%s\n", nWidth, &zName[nTagPrefix], zzValue);
        }else if( strncmp(zName, "sym-", 4)==0 ){
          printf("%s\n", &zName[4]);
          fossil_print("%-*s%s\n", nWidth, &zName[4], zzValue);
        }
      }
      db_finalize(&q);
    }else if( g.argc==4 ){
      char const *zObjId = g.argv[3];
      int rid = name_to_rid(g.argv[3]);
      const int rid = name_to_rid(zObjId);
      const int objType = whatis_rid_type(rid);
      int nTagOffset = 0;

      zTagPrefix = 0;
      if(objType<=0){
        fossil_fatal("Cannot resolve artifact ID: %s", zObjId);
      }else if(fRaw==0){
        /* Figure out the tag prefix to strip */
        switch(objType){
          case CFTYPE_MANIFEST: zTagPrefix = "sym-"; break;
          case CFTYPE_WIKI: zTagPrefix = "wiki-"; break;
          case CFTYPE_TICKET: zTagPrefix = "tkt-"; break;
          case CFTYPE_EVENT: zTagPrefix = "event-"; break;
          default: break;
        }
        if(zTagPrefix!=0){
          nTagOffset = (int)strlen(zTagPrefix);
        }
      }
      db_prepare(&q,
        "SELECT tagname, value FROM tagxref, tag"
        " WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
        "   AND tagtype>%d"
        " ORDER BY tagname",
        "   AND tagtype%s%d"
        " ORDER BY tagname COLLATE uintnocase",
        rid,
        zTagType!=0 ? (fInverse!=0?"<>":"=") : ">"/*safe-for-%s*/,
        fRaw ? -1 : 0
        nTagType
      );
      while( db_step(&q)==SQLITE_ROW ){
        const char *zName = db_column_text(&q, 0);
        const char *zValue = db_column_text(&q, 1);
        if( fRaw==0 ){
          if( strncmp(zName, "sym-", 4)!=0 ) continue;
          zName += 4;
        if( zTagPrefix && strncmp(zName, zTagPrefix, nTagOffset)==0 ){
          zName += nTagOffset;
        }
        if( zValue && zValue[0] ){
          printf("%s=%s\n", zName, zValue);
          fossil_print("%s=%s\n", zName, zValue);
        }else{
          printf("%s\n", zName);
          fossil_print("%s\n", zName);
        }
      }
      db_finalize(&q);
    }else{
      usage("tag list ?CHECK-IN?");
      usage("list ?OPTIONS? ?CHECK-IN?");
    }
  }else
  {
    goto tag_cmd_usage;
  }

  /* Cleanup */
  return;

tag_cmd_usage:
  usage("add|cancel|find|list ...");
}

/*
** COMMAND: reparent*
**
** Usage: %fossil reparent [OPTIONS] CHECK-IN PARENT ...
**
** Create a "parent" tag that causes CHECK-IN to be interpreted as a
** child of PARENT.  If multiple PARENTs are listed, then the first is
** the primary parent and others are merge ancestors.
**
** This is an experts-only command.  It is used to patch up a repository
** that has been damaged by a shun or that has been pieced together from
** two or more separate repositories.  You should never need to reparent
** during normal operations.
**
** Reparenting is accomplished by adding a parent tag.  So to undo the
** reparenting operation, simply delete the tag.
**
**    --test           Make database entries but do not add the tag artifact.
**                     So the reparent operation will be undone by the next
**                     "fossil rebuild" command.
**    -n|--dry-run     Print the tag that would have been created but do not
**                     actually change the database in any way.
**    --date-override DATETIME  Set the change time on the control artifact
**    --user-override USER      Set the user name on the control artifact
*/
void reparent_cmd(void){
  int bTest = find_option("test","",0)!=0;
  int rid;
  int i;
  Blob value;
  char *zUuid;
  int dryRun = 0;
  const char *zDateOvrd;  /* The change time on the control artifact */
  const char *zUserOvrd;  /* The user name on the control artifact */

  if( find_option("dry-run","n",0)!=0 ) dryRun = TAG_ADD_DRYRUN;
  zDateOvrd = find_option("date-override",0,1);
  zUserOvrd = find_option("user-override",0,1);
  db_find_and_open_repository(0, 0);
  verify_all_options();
  if( g.argc<4 ){
    usage("[OPTIONS] CHECK-IN PARENT ...");
  }
  rid = name_to_typed_rid(g.argv[2], "ci");
  blob_init(&value, 0, 0);
  for(i=3; i<g.argc; i++){
    int pid = name_to_typed_rid(g.argv[i], "ci");
    if( i>3 ) blob_append(&value, " ", 1);
    zUuid = rid_to_uuid(pid);
    blob_append(&value, zUuid, strlen(zUuid));
    fossil_free(zUuid);
  }
  if( bTest && !dryRun ){
    tag_insert("parent", 1, blob_str(&value), -1, 0.0, rid);
  }else{
    zUuid = rid_to_uuid(rid);
    tag_add_artifact("","parent",zUuid,blob_str(&value),1|dryRun,
                     zDateOvrd,zUserOvrd);
  }
}


/*
** WEBPAGE: /taglist
** WEBPAGE: taglist
**
** List all non-propagating symbolic tags.
*/
void taglist_page(void){
  Stmt q;

  login_check_credentials();
  if( !g.okRead ){
    login_needed();
  if( !g.perm.Read ){
    login_needed(g.anon.Read);
  }
  cgi_check_for_malice();
  login_anonymous_available();
  style_header("Tags");
  style_adunit_config(ADUNIT_RIGHT_OK);
  style_submenu_element("Timeline", "Timeline", "tagtimeline");
  style_submenu_element("Timeline", "tagtimeline");
  @ <h2>Non-propagating tags:</h2>
  @ <table class='sortable' data-column-types='ktn' data-init-sort='2'>
  @ <thead><tr>
  @ <th>Tag Name</th>
  @ <th>Most Recent</th>
  @ <th>Count</th>
  @ </tr></thead><tbody>

  db_prepare(&q,
    "SELECT substr(tagname,5)"
    "  FROM tag"
    " WHERE EXISTS(SELECT 1 FROM tagxref"
    "               WHERE tagid=tag.tagid"
    "SELECT substr(tagname,5),\n"
           "row_number()OVER(ORDER BY tagname COLLATE uintnocase),\n"
           "substr(datetime(max(event.mtime)),1,16),\n"
           "count(*)\n"
      "FROM tagxref JOIN tag USING(tagid)\n"
          " JOIN event ON event.objid=tagxref.rid\n"
     "WHERE tagname like 'sym-%%'\n"
    "                 AND tagtype=1)"
    " AND tagname GLOB 'sym-*'"
    " ORDER BY tagname"
       "AND tagxref.tagtype=1\n"
     "GROUP BY 1\n"
     "ORDER BY 3 DESC;\n"
  );
  @ <ul>
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    int rn = db_column_int(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    int cnt = db_column_int(&q, 3);
    @ <tr><td data-sortkey="%06x(rn)">\
    if( g.okHistory ){
      @ <li><a href=%s(g.zBaseURL)/timeline?t=%T(zName)>%h(zName)</a></li>
    if( g.perm.Hyperlink ){
      @ %z(chref("taglink","%R/timeline?t=%T",zName))%h(zName)</a></td>\
    }else{
      @ <li><strong>%h(zName)</strong></li>
      @ <span class="tagDsp">%h(zName)</span></td>\
    }
    @ <td>&nbsp;&nbsp;&nbsp;%h(zDate)&nbsp;&nbsp;&nbsp;</td>\
    @ <td align="center">%d(cnt)</td></tr>
  }
  @ </ul>
  @ </table>
  db_finalize(&q);
  style_table_sorter();
  style_footer();
  style_finish_page();
}

/*
** Draw the names of all tags added to check-in rid.  Only tags
** that are directly applied to rid are named.  Propagated tags
** are omitted.
*/
static void tagtimeline_extra(int rid){
** WEBPAGE: /tagtimeline
**
** Render a timeline with all check-ins that contain non-propagating
  Stmt q;
  db_prepare(&q, 
    "SELECT substr(tagname,5) FROM tagxref, tag"
    " WHERE tagxref.rid=%d"
** symbolic tags.
    "   AND tagxref.tagid=tag.tagid"
    "   AND tagxref.tagtype>0 AND tagxref.srcid>0"
    "   AND tag.tagname GLOB 'sym-*'",
**
    rid
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zTagName = db_column_text(&q, 0);
    if( g.okHistory ){
      @ <a href="%s(g.zBaseURL)/timeline?t=%T(zTagName)">[%h(zTagName)]</a>
    }else{
      @ <b>[%h(zTagName)]</b>
    }
  }
  db_finalize(&q);
}

/*
** WEBPAGE: /tagtimeline
** Query parameters:
**
**     ng            No graph
**     nohidden      Hide check-ins with "hidden" tag
**     onlyhidden    Show only check-ins with "hidden" tag
**     brbg          Background color by branch name
**     ubg           Background color by user name
*/
void tagtimeline_page(void){
  Blob sql = empty_blob;
  Stmt q;
  int tmFlags;                            /* Timeline display flags */
  int fNoHidden = PB("nohidden")!=0;      /* The "nohidden" query parameter */
  int fOnlyHidden = PB("onlyhidden")!=0;  /* The "onlyhidden" query parameter */

  login_check_credentials();
  if( !g.okRead ){ login_needed(); return; }
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }

  style_header("Tagged Check-ins");
  style_submenu_element("List", "List", "taglist");
  style_submenu_element("List", "taglist");
  login_anonymous_available();
  timeline_ss_submenu();
  @ <h2>Check-ins with non-propagating tags:</h2>
  blob_append(&sql, timeline_query_for_www(), -1);
  db_prepare(&q,
    "%s AND blob.rid IN (SELECT rid FROM tagxref"
    "                     WHERE tagtype=1 AND srcid>0"
    "                       AND tagid IN (SELECT tagid FROM tag "
    "                                      WHERE tagname GLOB 'sym-*'))"
    " ORDER BY event.mtime DESC",
  blob_append_sql(&sql,
    "AND blob.rid IN (SELECT rid FROM tagxref"
    "                  WHERE tagtype=1 AND srcid>0"
    "                    AND tagid IN (SELECT tagid FROM tag "
    "                                   WHERE tagname GLOB 'sym-*'))");
  if( fNoHidden || fOnlyHidden ){
    const char* zUnaryOp = fNoHidden ? "NOT" : "";
    blob_append_sql(&sql,
      " AND %s EXISTS(SELECT 1 FROM tagxref"
      " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)\n",
      zUnaryOp/*safe-for-%s*/, TAG_HIDDEN);
  }
  db_prepare(&q, "%s ORDER BY event.mtime DESC /*sort*/", blob_sql_text(&sql));
    timeline_query_for_www()
  );
  www_print_timeline(&q, 0, tagtimeline_extra);
  blob_reset(&sql);
  /* Always specify TIMELINE_DISJOINT, or graph_finish() may fail because of too
  ** many descenders to (off-screen) parents. */
  tmFlags = TIMELINE_XMERGE | TIMELINE_FILLGAPS | TIMELINE_NOSCROLL;
  if( PB("ng")==0 ) tmFlags |= TIMELINE_GRAPH;
  if( PB("brbg")!=0 ) tmFlags |= TIMELINE_BRCOLOR;
  if( PB("ubg")!=0 ) tmFlags |= TIMELINE_UCOLOR;
  www_print_timeline(&q, tmFlags, 0, 0, 0, 0, 0, 0);
  db_finalize(&q);
  @ <br clear="both">
  @ <script>
  @ function xin(id){
  @ }
  @ function xout(id){
  @ }
  @ </script>
  style_footer();
}
  @ <br>
  style_finish_page();
}

/*
** Returns true if the given blob.rid value has the given tag ID
** applied to it, else false.
*/
int rid_has_tag(int rid, int tagId){
  return db_exists(
     "SELECT tag.tagid FROM tagxref, tag"
     " WHERE tagxref.rid=%d AND tagtype>0 "
     " AND tag.tagid=%d"
     " AND tagxref.tagid=tag.tagid",
     rid, tagId
  );
}


/*
** Returns tagxref.rowid if the given blob.rid has a tagxref.rid entry
** of an active (non-cancelled) tag matching the given rid and tag
** name string, else returns 0. Note that this function does not
** distinguish between a non-existent tag and a cancelled tag.
**
** Design note: the return value is the tagxref.rowid because that
** gives us an easy way to fetch the value of the tag later on, if
** needed.
*/
int rid_has_active_tag_name(int rid, const char *zTagName){
  static Stmt q = empty_Stmt_m;
  int rc;

  assert( 0 != zTagName );
  if( !q.pStmt ){
    db_static_prepare(&q,
       "SELECT x.rowid FROM tagxref x, tag t"
       " WHERE x.rid=$rid AND x.tagtype>0 "
       " AND x.tagid=t.tagid"
       " AND t.tagname=$tagname"
    );
  }
  db_bind_int(&q, "$rid", rid);
  db_bind_text(&q, "$tagname", zTagName);
  rc = (SQLITE_ROW==db_step(&q)) ? db_column_int(&q, 0) : 0;
  db_reset(&q);
  return rc;
}
Added src/tar.c.



















































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2011 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to generate tarballs.
*/
#include "config.h"
#include <assert.h>
#include <zlib.h>
#include "tar.h"

/*
** State information for the tarball builder.
*/
static struct tarball_t {
  unsigned char *aHdr;      /* Space for building headers */
  char *zSpaces;            /* Spaces for padding */
  char *zPrevDir;           /* Name of directory for previous entry */
  int nPrevDirAlloc;        /* size of zPrevDir */
  Blob pax;                 /* PAX data */
} tball;


/*
** field lengths of 'ustar' name and prefix fields.
*/
#define USTAR_NAME_LEN    100
#define USTAR_PREFIX_LEN  155


/*
** Begin the process of generating a tarball.
**
** Initialize the GZIP compressor and the table of directory names.
*/
static void tar_begin(sqlite3_int64 mTime){
  assert( tball.aHdr==0 );
  tball.aHdr = fossil_malloc(512+512);
  memset(tball.aHdr, 0, 512+512);
  tball.zSpaces = (char*)&tball.aHdr[512];
  /* zPrevDir init */
  tball.zPrevDir = NULL;
  tball.nPrevDirAlloc = 0;
  /* scratch buffer init */
  blob_zero(&tball.pax);

  memcpy(&tball.aHdr[108], "0000000", 8);  /* Owner ID */
  memcpy(&tball.aHdr[116], "0000000", 8);  /* Group ID */
  memcpy(&tball.aHdr[257], "ustar\00000", 8);  /* POSIX.1 format */
  memcpy(&tball.aHdr[265], "nobody", 7);   /* Owner name */
  memcpy(&tball.aHdr[297], "nobody", 7);   /* Group name */
  gzip_begin(mTime);
  db_multi_exec(
    "CREATE TEMP TABLE dir(name UNIQUE);"
  );
}


/*
** Verify that all characters in 'zName' are in the
** ISO646 (=ASCII) character set.
*/
static int is_iso646_name(
  const char *zName,     /* file path */
  int nName              /* path length */
){
  int i;
  for(i = 0; i < nName; i++){
    unsigned char c = (unsigned char)zName[i];
    if( c>0x7e ) return 0;
  }
  return 1;
}


/*
**  copy string pSrc into pDst, truncating or padding with 0 if necessary
*/
static void padded_copy(
  char *pDest,
  int nDest,
  const char *pSrc,
  int nSrc
){
  if(nSrc >= nDest){
    memcpy(pDest, pSrc, nDest);
  }else{
    memcpy(pDest, pSrc, nSrc);
    memset(&pDest[nSrc], 0, nDest - nSrc);
  }
}



/******************************************************************************
**
** The 'tar' format has evolved over time. Initially the name was stored
** in a 100 byte null-terminated field 'name'. File path names were
** limited to 99 bytes.
**
** The Posix.1 'ustar' format added a 155 byte field 'prefix', allowing
** for up to 255 characters to be stored. The full file path is formed by
** concatenating the field 'prefix', a slash, and the field 'name'. This
** gives some measure of compatibility with programs that only understand
** the oldest format.
**
** The latest Posix extension is called the 'pax Interchange Format'.
** It removes all the limitations of the previous two formats by allowing
** the storage of arbitrary-length attributes in a separate object that looks
** like a file to programs that do not understand this extension. So the
** contents of the 'name' and 'prefix' fields should contain values that allow
** versions of tar that do not understand this extension to still do
** something useful.
**
******************************************************************************/

/*
** The position we use to split a file path into the 'name' and 'prefix'
** fields needs to meet the following criteria:
**
**   - not at the beginning or end of the string
**   - the position must contain a slash
**   - no more than 100 characters follow the slash
**   - no more than 155 characters precede it
**
** The routine 'find_split_pos' finds a split position. It will meet the
** criteria of listed above if such a position exists. If no such
** position exists it generates one that useful for generating the
** values used for backward compatibility.
*/
static int find_split_pos(
  const char *zName,     /* file path */
  int nName              /* path length */
){
  int i, split = 0;
  /* only search if the string needs splitting */
  if(nName > USTAR_NAME_LEN){
    for(i = 1; i+1 < nName; i++)
      if(zName[i] == '/'){
        split = i+1;
        /* if the split position is within USTAR_NAME_LEN bytes from
         * the end we can quit */
        if(nName - split <= USTAR_NAME_LEN) break;
      }
  }
  return split;
}


/*
** attempt to split the file name path to meet 'ustar' header
** criteria.
*/
static int tar_split_path(
  const char *zName,     /* path */
  int nName,             /* path length */
  char *pName,           /* name field */
  char *pPrefix          /* prefix field */
){
  int split = find_split_pos(zName, nName);
  /* check whether both pieces fit */
  if(nName - split > USTAR_NAME_LEN || split > USTAR_PREFIX_LEN+1){
    return 0; /* no */
  }

  /* extract name */
  padded_copy(pName, USTAR_NAME_LEN, &zName[split], nName - split);

  /* extract prefix */
  padded_copy(pPrefix, USTAR_PREFIX_LEN, zName, (split > 0 ? split - 1 : 0));

  return 1; /* success */
}


/*
** When using an extension header we still need to put something
** reasonable in the name and prefix fields. This is probably as
** good as it gets.
*/
static void approximate_split_path(
  const char *zName,     /* path */
  int nName,             /* path length */
  char *pName,           /* name field */
  char *pPrefix,         /* prefix field */
  int bHeader            /* is this a 'x' type tar header? */
){
  int split;

  /* if this is a Pax Interchange header prepend "PaxHeader/"
  ** so we can tell files apart from metadata */
  if( bHeader ){
    blob_reset(&tball.pax);
    blob_appendf(&tball.pax, "PaxHeader/%*.*s", nName, nName, zName);
    zName = blob_buffer(&tball.pax);
    nName = blob_size(&tball.pax);
  }

  /* find the split position */
  split = find_split_pos(zName, nName);

  /* extract a name, truncate if needed */
  padded_copy(pName, USTAR_NAME_LEN, &zName[split], nName - split);

  /* extract a prefix field, truncate when needed */
  padded_copy(pPrefix, USTAR_PREFIX_LEN, zName, (split > 0 ? split-1 : 0));
}


/*
** add a Pax Interchange header to the scratch buffer
**
** format: <length> <key>=<value>\n
** the tricky part is that each header contains its own
** size in decimal, counting that length.
*/
static void add_pax_header(
  const char *zField,
  const char *zValue,
  int nValue
){
  /* calculate length without length field */
  int blen = strlen(zField) + nValue + 3;
  /* calculate the length of the length field */
  int next10 = 1;
  int n;
  for(n = blen; n > 0; ){
    blen++; next10 *= 10;
    n /= 10;
  }
  /* adding the length extended the length field? */
  if(blen > next10){
    blen++;
  }
  /* build the string */
  blob_appendf(&tball.pax, "%d %s=%*.*s\n",
               blen, zField, nValue, nValue, zValue);
  /* this _must_ be right */
  if((int)blob_size(&tball.pax) != blen){
    fossil_panic("internal error: PAX tar header has bad length");
  }
}


/*
** set the header type, calculate the checksum and output
** the header
*/
static void cksum_and_write_header(
  char cType
){
  unsigned int cksum = 0;
  int i;
  memset(&tball.aHdr[148], ' ', 8);
  tball.aHdr[156] = cType;
  for(i=0; i<512; i++) cksum += tball.aHdr[i];
  sqlite3_snprintf(8, (char*)&tball.aHdr[148], "%07o", cksum);
  tball.aHdr[155] = 0;
  gzip_step((char*)tball.aHdr, 512);
}


/*
** Build a header for a file or directory and write that header
** into the growing tarball.
*/
static void tar_add_header(
  const char *zName,     /* Name of the object */
  int nName,             /* Number of characters in zName */
  int iMode,             /* Mode.  0644 or 0755 */
  unsigned int mTime,    /* File modification time */
  int iSize,             /* Size of the object in bytes */
  char cType             /* Type of object:
                            '0'==file. '2'==symlink. '5'==directory */
){
  /* set mode and modification time */
  sqlite3_snprintf(8, (char*)&tball.aHdr[100], "%07o", iMode);
  sqlite3_snprintf(12, (char*)&tball.aHdr[136], "%011o", mTime);

  /* see if we need to output a Pax Interchange Header */
  if( !is_iso646_name(zName, nName)
   || !tar_split_path(zName, nName, (char*)tball.aHdr, (char*)&tball.aHdr[345])
  ){
    int lastPage;
    /* add a file name for interoperability with older programs */
    approximate_split_path(zName, nName, (char*)tball.aHdr,
                           (char*)&tball.aHdr[345], 1);

    /* generate the Pax Interchange path header */
    blob_reset(&tball.pax);
    add_pax_header("path", zName, nName);

    /* set the header length, and write the header */
    sqlite3_snprintf(12, (char*)&tball.aHdr[124], "%011o",
                     blob_size(&tball.pax));
    cksum_and_write_header('x');

    /* write the Pax Interchange data */
    gzip_step(blob_buffer(&tball.pax), blob_size(&tball.pax));
    lastPage = blob_size(&tball.pax) % 512;
    if( lastPage!=0 ){
      gzip_step(tball.zSpaces, 512 - lastPage);
    }

    /* generate an approximate path for the regular header */
    approximate_split_path(zName, nName, (char*)tball.aHdr,
                           (char*)&tball.aHdr[345], 0);
  }
  /* set the size */
  sqlite3_snprintf(12, (char*)&tball.aHdr[124], "%011o", iSize);

  /* write the regular header */
  cksum_and_write_header(cType);
}


/*
** Recursively add an directory entry for the given file if those
** directories have not previously been seen.
*/
static void tar_add_directory_of(
  const char *zName,      /* Name of directory including final "/" */
  int nName,              /* Characters in zName */
  unsigned int mTime      /* Modification time */
){
  int i;
  for(i=nName-1; i>0 && zName[i]!='/'; i--){}
  if( i<=0 ) return;
  if( i<tball.nPrevDirAlloc
   && strncmp(tball.zPrevDir, zName, i)==0
   && tball.zPrevDir[i]==0 ) return;
  db_multi_exec("INSERT OR IGNORE INTO dir VALUES('%#q')", i, zName);
  if( sqlite3_changes(g.db)==0 ) return;
  tar_add_directory_of(zName, i-1, mTime);
  tar_add_header(zName, i, 0755, mTime, 0, '5');
  if( i >= tball.nPrevDirAlloc ){
    int nsize = tball.nPrevDirAlloc * 2;
    if(i+1 > nsize)
      nsize = i+1;
    tball.zPrevDir = fossil_realloc(tball.zPrevDir, nsize);
    tball.nPrevDirAlloc = nsize;
  }
  memcpy(tball.zPrevDir, zName, i);
  tball.zPrevDir[i] = 0;
}


/*
** Add a single file to the growing tarball.
*/
static void tar_add_file(
  const char *zName,               /* Name of the file.  nul-terminated */
  Blob *pContent,                  /* Content of the file */
  int mPerm,                       /* 1: executable file, 2: symlink */
  unsigned int mTime               /* Last modification time of the file */
){
  int nName = strlen(zName);
  int n = blob_size(pContent);
  int lastPage;
  char cType = '0';

  /* length check moved to tar_split_path */
  tar_add_directory_of(zName, nName, mTime);

  /*
   * If we have a symlink, write its destination path (which is stored in
   * pContent) into header, and set content length to 0 to avoid storing path
   * as file content in the next step.  Since 'linkname' header is limited to
   * 100 bytes (-1 byte for terminating zero), if path is greater than that,
   * store symlink as a plain-text file. (Not sure how TAR handles long links.)
   */
  if( mPerm == PERM_LNK && n <= 100 ){
    sqlite3_snprintf(100, (char*)&tball.aHdr[157], "%s", blob_str(pContent));
    cType = '2';
    n = 0;
  }

  tar_add_header(zName, nName, ( mPerm==PERM_EXE ) ? 0755 : 0644,
                 mTime, n, cType);
  if( n ){
    gzip_step(blob_buffer(pContent), n);
    lastPage = n % 512;
    if( lastPage!=0 ){
      gzip_step(tball.zSpaces, 512 - lastPage);
    }
  }
}

/*
** Finish constructing the tarball.  Put the content of the tarball
** in Blob pOut.
*/
static void tar_finish(Blob *pOut){
  db_multi_exec("DROP TABLE dir");
  gzip_step(tball.zSpaces, 512);
  gzip_step(tball.zSpaces, 512);
  gzip_finish(pOut);
  fossil_free(tball.aHdr);
  tball.aHdr = 0;
  fossil_free(tball.zPrevDir);
  tball.zPrevDir = NULL;
  tball.nPrevDirAlloc = 0;
  blob_reset(&tball.pax);
}


/*
** COMMAND: test-tarball
**
** Generate a GZIP-compressed tarball in the file given by the first argument
** that contains files given in the second and subsequent arguments.
**
**   -h|--dereference   Follow symlinks and archive the files they point to
*/
void test_tarball_cmd(void){
  int i;
  Blob zip;
  int eFType = SymFILE;
  if( g.argc<3 ){
    usage("ARCHIVE [options] FILE....");
  }
  if( find_option("dereference","h",0) ){
    eFType = ExtFILE;
  }
  sqlite3_open(":memory:", &g.db);
  tar_begin(-1);
  for(i=3; i<g.argc; i++){
    Blob file;
    blob_zero(&file);
    blob_read_from_file(&file, g.argv[i], eFType);
    tar_add_file(g.argv[i], &file, file_perm(0,eFType), file_mtime(0,eFType));
    blob_reset(&file);
  }
  tar_finish(&zip);
  blob_write_to_file(&zip, g.argv[2]);
}

/*
** Given the RID for a check-in, construct a tarball containing
** all files in that check-in that match pGlob (or all files if
** pGlob is NULL).
**
** If RID is for an object that is not a real manifest, then the
** resulting tarball contains a single file which is the RID
** object.  pInclude and pExclude are ignored in this case.
**
** If the RID object does not exist in the repository, then
** pTar is zeroed.
**
** zDir is a "synthetic" subdirectory which all files get
** added to as part of the tarball. It may be 0 or an empty string, in
** which case it is ignored. The intention is to create a tarball which
** politely expands into a subdir instead of filling your current dir
** with source files. For example, pass an artifact hash or "ProjectName".
**
*/
void tarball_of_checkin(
  int rid,             /* The RID of the check-in from which to form a tarball*/
  Blob *pTar,          /* Write the tarball into this blob */
  const char *zDir,    /* Directory prefix for all file added to tarball */
  Glob *pInclude,      /* Only add files matching this pattern */
  Glob *pExclude,      /* Exclude files matching this pattern */
  int listFlag         /* Show filenames on stdout */
){
  Blob mfile, hash, file;
  Manifest *pManifest;
  ManifestFile *pFile;
  Blob filename;
  int nPrefix;
  char *zName = 0;
  unsigned int mTime;

  content_get(rid, &mfile);
  if( blob_size(&mfile)==0 ){
    blob_zero(pTar);
    return;
  }
  blob_set_dynamic(&hash, rid_to_uuid(rid));
  blob_zero(&filename);

  if( zDir && zDir[0] ){
    blob_appendf(&filename, "%s/", zDir);
  }
  nPrefix = blob_size(&filename);

  pManifest = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( pManifest ){
    int flg, eflg = 0;
    mTime = (unsigned)((pManifest->rDate - 2440587.5)*86400.0);
    if( pTar ) tar_begin(mTime);
    flg = db_get_manifest_setting();
    if( flg ){
      /* eflg is the effective flags, taking include/exclude into account */
      if( (pInclude==0 || glob_match(pInclude, "manifest"))
       && !glob_match(pExclude, "manifest")
       && (flg & MFESTFLG_RAW) ){
        eflg |= MFESTFLG_RAW;
      }
      if( (pInclude==0 || glob_match(pInclude, "manifest.uuid"))
       && !glob_match(pExclude, "manifest.uuid")
       && (flg & MFESTFLG_UUID) ){
        eflg |= MFESTFLG_UUID;
      }
      if( (pInclude==0 || glob_match(pInclude, "manifest.tags"))
       && !glob_match(pExclude, "manifest.tags")
       && (flg & MFESTFLG_TAGS) ){
        eflg |= MFESTFLG_TAGS;
      }

      if( eflg & (MFESTFLG_RAW|MFESTFLG_UUID) ){
        if( eflg & MFESTFLG_RAW ){
          blob_append(&filename, "manifest", -1);
          zName = blob_str(&filename);
          if( listFlag ) fossil_print("%s\n", zName);
          if( pTar ){
            tar_add_file(zName, &mfile, 0, mTime);
          }
        }
      }
      blob_reset(&mfile);
      if( eflg & MFESTFLG_UUID ){
        blob_resize(&filename, nPrefix);
        blob_append(&filename, "manifest.uuid", -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
        if( pTar ){
          blob_append(&hash, "\n", 1);
          tar_add_file(zName, &hash, 0, mTime);
        }
      }
      if( eflg & MFESTFLG_TAGS ){
        blob_resize(&filename, nPrefix);
        blob_append(&filename, "manifest.tags", -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
        if( pTar ){
          Blob tagslist;
          blob_zero(&tagslist);
          get_checkin_taglist(rid, &tagslist);
          tar_add_file(zName, &tagslist, 0, mTime);
          blob_reset(&tagslist);
        }
      }
    }
    manifest_file_rewind(pManifest);
    while( (pFile = manifest_file_next(pManifest,0))!=0 ){
      int fid;
      if( pInclude!=0 && !glob_match(pInclude, pFile->zName) ) continue;
      if( glob_match(pExclude, pFile->zName) ) continue;
      fid = uuid_to_rid(pFile->zUuid, 0);
      if( fid ){
        blob_resize(&filename, nPrefix);
        blob_append(&filename, pFile->zName, -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
        if( pTar ){
          content_get(fid, &file);
          tar_add_file(zName, &file, manifest_file_mperm(pFile), mTime);
          blob_reset(&file);
        }
      }
    }
  }else{
    blob_append(&filename, blob_str(&hash), 16);
    zName = blob_str(&filename);
    if( listFlag ) fossil_print("%s\n", zName);
    if( pTar ){
      mTime = db_int64(0, "SELECT (julianday('now') -  2440587.5)*86400.0;");
      tar_begin(mTime);
      tar_add_file(zName, &mfile, 0, mTime);
    }
  }
  manifest_destroy(pManifest);
  blob_reset(&mfile);
  blob_reset(&hash);
  blob_reset(&filename);
  if( pTar ) tar_finish(pTar);
}

/*
** COMMAND: tarball*
**
** Usage: %fossil tarball VERSION OUTPUTFILE [OPTIONS]
**
** Generate a compressed tarball for a specified version.  If the --name
** option is used, its argument becomes the name of the top-level directory
** in the resulting tarball.  If --name is omitted, the top-level directory
** name is derived from the project name, the check-in date and time, and
** the artifact ID of the check-in.
**
** The GLOBLIST argument to --exclude and --include can be a comma-separated
** list of glob patterns, where each glob pattern may optionally be enclosed
** in "..." or '...' so that it may contain commas.  If a file matches both
** --include and --exclude then it is excluded.
**
** If OUTPUTFILE is an empty string or "/dev/null" then no tarball is
** actually generated.  This feature can be used in combination with
** the --list option to get a list of the filenames that would be in the
** tarball had it actually been generated.  Note that --list shows only
** filenames.  "tar tzf" shows both filenames and subdirectory names.
**
** Options:
**   -X|--exclude GLOBLIST   Comma-separated list of GLOBs of files to exclude
**   --include GLOBLIST      Comma-separated list of GLOBs of files to include
**   -l|--list               Show archive content on stdout
**   --name DIRECTORYNAME    The name of the top-level directory in the archive
**   -R REPOSITORY           Specify a Fossil repository
*/
void tarball_cmd(void){
  int rid;
  Blob tarball;
  const char *zName;
  Glob *pInclude = 0;
  Glob *pExclude = 0;
  const char *zInclude;
  const char *zExclude;
  int listFlag = 0;
  const char *zOut;
  zName = find_option("name", 0, 1);
  zExclude = find_option("exclude", "X", 1);
  if( zExclude ) pExclude = glob_create(zExclude);
  zInclude = find_option("include", 0, 1);
  if( zInclude ) pInclude = glob_create(zInclude);
  db_find_and_open_repository(0, 0);
  listFlag = find_option("list","l",0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=4 ){
    usage("VERSION OUTPUTFILE");
  }
  g.zOpenRevision = g.argv[2];
  rid = name_to_typed_rid(g.argv[2], "ci");
  if( rid==0 ){
    fossil_fatal("Check-in not found: %s", g.argv[2]);
    return;
  }
  zOut = g.argv[3];
  if( fossil_strcmp("/dev/null",zOut)==0 || fossil_strcmp("",zOut)==0 ){
    zOut = 0;
  }

  if( zName==0 ){
    zName = db_text("default-name",
       "SELECT replace(%Q,' ','_') "
          " || strftime('_%%Y-%%m-%%d_%%H%%M%%S_', event.mtime) "
          " || substr(blob.uuid, 1, 10)"
       "  FROM event, blob"
       " WHERE event.objid=%d"
       "   AND blob.rid=%d",
       db_get("project-name", "unnamed"), rid, rid
    );
  }
  tarball_of_checkin(rid, zOut ? &tarball : 0,
                     zName, pInclude, pExclude, listFlag);
  glob_free(pInclude);
  glob_free(pExclude);
  if( listFlag ) fflush(stdout);
  if( zOut ){
    blob_write_to_file(&tarball, zOut);
    blob_reset(&tarball);
  }
}

/*
** Check to see if the input string is of the form:
**
**        check-in-name/filename.ext
**
** In other words, check to see if the input contains a single '/'
** character that separates a valid check-in name from a filename.
**
** If the condition is true, return the check-in name and set the
** input string to be the filename.
**
** If the condition is false, return NULL
*/
char *tar_uuid_from_name(char **pzName){
  char *zName = *pzName;
  int i, n;
  for(i=n=0; zName[i]; i++){
    if( zName[i]=='/' ){
      if( n==0 ) n = i;
      else return 0;
    }
  }
  if( n==0 ) return 0;
  if( zName[n+1]==0 ) return 0;
  zName[n] = 0;
  *pzName = fossil_strdup(&zName[n+1]);
  return zName;
}

/*
** WEBPAGE: tarball
** URL: /tarball/[VERSION/]NAME.tar.gz
**
** Generate a compressed tarball for the check-in specified by VERSION.
** The tarball is called NAME.tar.gz and has a top-level directory called
** NAME.
**
** The optional VERSION element defaults to "trunk" per the r= rules below.
** All of the following URLs are equivalent:
**
**      /tarball/release/xyz.tar.gz
**      /tarball?r=release&name=xyz.tar.gz
**      /tarball/xyz.tar.gz?r=release
**      /tarball?name=release/xyz.tar.gz
**
** Query parameters:
**
**   name=[CKIN/]NAME    The optional CKIN component of the name= parameter
**                       identifies the check-in from which the tarball is
**                       constructed.  If CKIN is omitted and there is no
**                       r= query parameter, then use "trunk".  NAME is the
**                       name of the download file.  The top-level directory
**                       in the generated tarball is called by NAME with the
**                       file extension removed.
**
**   r=TAG               TAG identifies the check-in that is turned into a
**                       compressed tarball.  The default value is "trunk".
**                       If r= is omitted and if the name= query parameter
**                       contains one "/" character then the of part the
**                       name= value before the / becomes the TAG and the
**                       part of the name= value  after the / is the download
**                       filename.  If no check-in is specified by either
**                       name= or r=, then "trunk" is used.
**
**   in=PATTERN          Only include files that match the comma-separate
**                       list of GLOB patterns in PATTERN, as with ex=
**
**   ex=PATTERN          Omit any file that match PATTERN.  PATTERN is a
**                       comma-separated list of GLOB patterns, where each
**                       pattern can optionally be quoted using ".." or '..'.
**                       Any file matching both ex= and in= is excluded.
*/
void tarball_page(void){
  int rid;
  char *zName, *zRid, *zKey;
  int nName, nRid;
  const char *zInclude;         /* The in= query parameter */
  const char *zExclude;         /* The ex= query parameter */
  Blob cacheKey;                /* The key to cache */
  Glob *pInclude = 0;           /* The compiled in= glob pattern */
  Glob *pExclude = 0;           /* The compiled ex= glob pattern */
  Blob tarball;                 /* Tarball accumulated here */
  const char *z;

  login_check_credentials();
  if( !g.perm.Zip ){ login_needed(g.anon.Zip); return; }
  fossil_nice_default();
  zName = fossil_strdup(PD("name",""));
  z = P("r");
  if( z==0 ) z = P("uuid");
  if( z==0 ) z = tar_uuid_from_name(&zName);
  if( z==0 ) z = "trunk";
  g.zOpenRevision = zRid = fossil_strdup(z);
  nRid = strlen(zRid);
  zInclude = P("in");
  if( zInclude ) pInclude = glob_create(zInclude);
  zExclude = P("ex");
  if( zExclude ) pExclude = glob_create(zExclude);
  if( zInclude==0 && zExclude==0 ){
    etag_check_for_invariant_name(z);
  }
  nName = strlen(zName);
  if( nName>7 && fossil_strcmp(&zName[nName-7], ".tar.gz")==0 ){
    /* Special case:  Remove the ".tar.gz" suffix.  */
    nName -= 7;
    zName[nName] = 0;
  }else{
    /* If the file suffix is not ".tar.gz" then just remove the
    ** suffix up to and including the last "." */
    for(nName=strlen(zName)-1; nName>5; nName--){
      if( zName[nName]=='.' ){
        zName[nName] = 0;
        break;
      }
    }
  }
  rid = symbolic_name_to_rid(nRid?zRid:zName, "ci");
  if( rid==0 ){
    cgi_set_status(404, "Not Found");
    @ Not found
    return;
  }
  if( nRid==0 && nName>10 ) zName[10] = 0;

  /* Compute a unique key for the cache entry based on query parameters */
  blob_init(&cacheKey, 0, 0);
  blob_appendf(&cacheKey, "/tarball/%z", rid_to_uuid(rid));
  blob_appendf(&cacheKey, "/%q", zName);
  if( zInclude ) blob_appendf(&cacheKey, ",in=%Q", zInclude);
  if( zExclude ) blob_appendf(&cacheKey, ",ex=%Q", zExclude);
  zKey = blob_str(&cacheKey);
  etag_check(ETAG_HASH, zKey);

  if( P("debug")!=0 ){
    style_header("Tarball Generator Debug Screen");
    @ zName = "%h(zName)"<br>
    @ rid = %d(rid)<br>
    if( zInclude ){
      @ zInclude = "%h(zInclude)"<br>
    }
    if( zExclude ){
      @ zExclude = "%h(zExclude)"<br>
    }
    @ zKey = "%h(zKey)"
    style_finish_page();
    return;
  }
  if( referred_from_login() ){
    style_header("Tarball Download");
    @ <form action='%R/tarball/%h(zName).tar.gz'>
    cgi_query_parameters_to_hidden();
    @ <p>Tarball named <b>%h(zName).tar.gz</b> holding the content
    @ of check-in <b>%h(zRid)</b>:
    @ <input type="submit" value="Download">
    @ </form>
    style_finish_page();
    return;
  }
  cgi_check_for_malice();
  blob_zero(&tarball);
  if( cache_read(&tarball, zKey)==0 ){
    tarball_of_checkin(rid, &tarball, zName, pInclude, pExclude, 0);
    cache_write(&tarball, zKey);
  }
  glob_free(pInclude);
  glob_free(pExclude);
  fossil_free(zName);
  fossil_free(zRid);
  g.zOpenRevision = 0;
  blob_reset(&cacheKey);
  cgi_set_content(&tarball);
  cgi_set_content_type("application/x-compressed");
}
Added src/terminal.c.





































































































































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/*
** Copyright (c) 2020 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to query terminal info
*/

#include "config.h"
#include "terminal.h"
#include <assert.h>
#ifdef _WIN32
# include <windows.h>
#else
#ifdef __EXTENSIONS__
#include <termio.h>
#endif
#include <sys/ioctl.h>
#include <stdio.h>
#include <unistd.h>
#endif



#if INTERFACE
/*
** Terminal size defined in terms of columns and lines.
*/
struct TerminalSize {
  unsigned int nColumns;         /* Number of characters on a single line */
  unsigned int nLines;           /* Number of lines */
};
#endif


/* Get the current terminal size by calling a system service.
**
** Return 1 on success. This sets the size parameters to the values retured by
** the system call, when such is supported; set the size to zero otherwise.
** Return 0 on the system service call failure.
**
** Under Linux/bash the size info is also available from env $LINES, $COLUMNS.
** Or it can be queried using tput `echo -e "lines\ncols"|tput -S`.
** Technically, this info could be cached, but then we'd need to handle
** SIGWINCH signal to requery the terminal on resize event.
*/
int terminal_get_size(TerminalSize *t){
  memset(t, 0, sizeof(*t));

#if defined(TIOCGSIZE)
  {
    struct ttysize ts;
    if( ioctl(STDIN_FILENO, TIOCGSIZE, &ts)!=-1 ){
      t->nColumns = ts.ts_cols;
      t->nLines = ts.ts_lines;
      return 1;
    }
    return 0;
  }
#elif defined(TIOCGWINSZ)
  {
    struct winsize ws;
    if( ioctl(STDIN_FILENO, TIOCGWINSZ, &ws)!=-1 ){
      t->nColumns = ws.ws_col;
      t->nLines = ws.ws_row;
      return 1;
    }
    return 0;
  }
#elif defined(_WIN32)
  {
    CONSOLE_SCREEN_BUFFER_INFO csbi;
    if( GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi) ){
      t->nColumns = csbi.srWindow.Right - csbi.srWindow.Left + 1;
      t->nLines = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
      return 1;
    }
    return 0;
  }
#else
  return 1;
#endif
}

/*
** Return the terminal's current width in columns when available, otherwise
** return the specified default value.
*/
unsigned int terminal_get_width(unsigned int nDefault){
  TerminalSize ts;
  if( terminal_get_size(&ts) ){
    return ts.nColumns;
  }
  return nDefault;
}

/*
** Return the terminal's current height in lines when available, otherwise
** return the specified default value.
*/
unsigned int terminal_get_height(unsigned int nDefault){
  TerminalSize ts;
  if( terminal_get_size(&ts) ){
    return ts.nLines;
  }
  return nDefault;
}

/*
** COMMAND: test-terminal-size
**
** Show the size of the terminal window from which the command is launched
** as two integers, the width in characters and the height in lines.
**
** If the size cannot be determined, two zeros are shown.
*/
void test_terminal_size_cmd(void){
  TerminalSize ts;
  terminal_get_size(&ts);
  fossil_print("%d %d\n", ts.nColumns, ts.nLines);
}
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/*
** The implementation of the TH core. This file contains the parser, and 
** The implementation of the TH core. This file contains the parser, and
** the implementation of the interface in th.h.
*/

#include "config.h"
#include "th.h"
#include <string.h>
#include <assert.h>

/*
** Values used for element values in the tcl_platform array.
*/

#if !defined(TH_ENGINE)
#  define TH_ENGINE          "TH1"
#endif

#if !defined(TH_PLATFORM)
#  if defined(_WIN32) || defined(WIN32)
#    define TH_PLATFORM      "windows"
#  else
#    define TH_PLATFORM      "unix"
#  endif
#endif

/*
** Forward declarations for structures defined below.
*/

typedef struct Th_Command   Th_Command;
typedef struct Th_Frame     Th_Frame;
typedef struct Th_Variable  Th_Variable;
typedef struct Th_Command        Th_Command;
typedef struct Th_Frame          Th_Frame;
typedef struct Th_Variable       Th_Variable;
typedef struct Th_InterpAndList  Th_InterpAndList;

/*
** Interpreter structure.
*/
struct Th_Interp {
  Th_Vtab *pVtab;     /* Copy of the argument passed to Th_CreateInterp() */
  char *zResult;     /* Current interpreter result (Th_Malloc()ed) */
  char *zResult;      /* Current interpreter result (Th_Malloc()ed) */
  int nResult;        /* number of bytes in zResult */
  Th_Hash *paCmd;     /* Table of registered commands */
  Th_Frame *pFrame;   /* Current execution frame */
  int isListMode;     /* True if thSplitList() should operate in "list" mode */
};

/*
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** Each stack frame (variable scope) is represented by an instance
** of this structure. Variable values set using the Th_SetVar command
** are stored in the Th_Frame.paVar hash table member of the associated
** stack frame object.
**
** When an interpreter is created, a single Th_Frame structure is also
** allocated - the global variable scope. Th_Interp.pFrame (the current
** interpreter frame) is initialised to point to this Th_Frame. It is 
** not deleted for the lifetime of the interpreter (because the global 
** interpreter frame) is initialised to point to this Th_Frame. It is
** not deleted for the lifetime of the interpreter (because the global
** frame never goes out of scope).
**
** New stack frames are created by the Th_InFrame() function. Before
** invoking its callback function, Th_InFrame() allocates a new Th_Frame
** structure with pCaller set to the current frame (Th_Interp.pFrame),
** and sets the current frame to the new frame object. After the callback
** has been invoked, the allocated Th_Frame is deleted and the value
** of the current frame pointer restored.
** 
** By default, the Th_SetVar(), Th_UnsetVar() and Th_GetVar() functions 
** access variable values in the current frame. If they need to access 
**
** By default, the Th_SetVar(), Th_UnsetVar() and Th_GetVar() functions
** access variable values in the current frame. If they need to access
** the global frame, they do so by traversing the pCaller pointer list.
** Likewise, the Th_LinkVar() function uses the pCaller pointers to 
** Likewise, the Th_LinkVar() function uses the pCaller pointers to
** link to variables located in the global or other stack frames.
*/
struct Th_Frame {
  Th_Hash *paVar;               /* Variables defined in this scope */
  Th_Frame *pCaller;            /* Calling frame */
};

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** is stored in Th_Variable.nRef.
**
** For scalar variables, Th_Variable.zData is never 0. Th_Variable.nData
** stores the number of bytes in the value pointed to by zData.
**
** For an array variable, Th_Variable.zData is 0 and pHash points to
** a hash table mapping between array key name (a th1 string) and
** a the pointer to the Th_Variable structure holding the scalar
** a pointer to the Th_Variable structure holding the scalar
** value.
*/
struct Th_Variable {
  int nRef;                   /* Number of references to this structure */
  int nData;                  /* Number of bytes at Th_Variable.zData */
  char *zData;               /* Data for scalar variables */
  char *zData;                /* Data for scalar variables */
  Th_Hash *pHash;             /* Data for array variables */
};

/*
** This structure is used to pass complete context information to the
** hash iteration callback functions that need a Th_Interp and a list
** to operate on, e.g. thListAppendHashKey().
*/
struct Th_InterpAndList {
  Th_Interp *interp;          /* Associated interpreter context */
  char **pzList;              /* IN/OUT: Ptr to ptr to list */
  int *pnList;                /* IN/OUT: Current length of *pzList */
};

/*
** Hash table API:
*/
#define TH_HASHSIZE 257
struct Th_Hash {
  Th_HashEntry *a[TH_HASHSIZE];
};

static int thEvalLocal(Th_Interp *, const char *, int);
static int thSplitList(Th_Interp*, const char*, int, char***, int **, int*);

static int thHexdigit(char c);
static int thEndOfLine(const char *, int);

static int  thPushFrame(Th_Interp*, Th_Frame*);
static void thPopFrame(Th_Interp*);

static void thFreeVariable(Th_HashEntry*, void*);
static void thFreeCommand(Th_HashEntry*, void*);
static int thFreeVariable(Th_HashEntry*, void*);
static int thFreeCommand(Th_HashEntry*, void*);

/*
** The following are used by both the expression and language parsers.
** Given that the start of the input string (z, n) is a language 
** Given that the start of the input string (z, n) is a language
** construct of the relevant type (a command enclosed in [], an escape
** sequence etc.), these functions determine the number of bytes
** of the input consumed by the construct. For example:
**
**   int nByte;
**   thNextCommand(interp, "[expr $a+1] $nIter", 18, &nByte);
**
** results in variable nByte being set to 11. Or, 
** results in variable nByte being set to 11. Or,
**
**   thNextVarname(interp, "$a+1", 4, &nByte);
**
** results in nByte being set to 2.
*/
static int thNextCommand(Th_Interp*, const char *z, int n, int *pN);
static int thNextEscape (Th_Interp*, const char *z, int n, int *pN);
static int thNextVarname(Th_Interp*, const char *z, int n, int *pN);
static int thNextNumber (Th_Interp*, const char *z, int n, int *pN);
static int thNextInteger (Th_Interp*, const char *z, int n, int *pN);
static int thNextSpace  (Th_Interp*, const char *z, int n, int *pN);

/*
** Given that the input string (z, n) contains a language construct of
** the relevant type (a command enclosed in [], an escape sequence 
** the relevant type (a command enclosed in [], an escape sequence
** like "\xFF" or a variable reference like "${varname}", perform
** substitution on the string and store the resulting string in
** the interpreter result.
*/
static int thSubstCommand(Th_Interp*, const char *z, int n);
static int thSubstEscape (Th_Interp*, const char *z, int n);
static int thSubstVarname(Th_Interp*, const char *z, int n);

/*
** Given that there is a th1 word located at the start of the input 
** Given that there is a th1 word located at the start of the input
** string (z, n), determine the length in bytes of that word. If the
** isCmd argument is non-zero, then an unescaped ";" byte not 
** located inside of a block or quoted string is considered to mark 
** isCmd argument is non-zero, then an unescaped ";" byte not
** located inside of a block or quoted string is considered to mark
** the end of the word.
*/
static int thNextWord(Th_Interp*, const char *z, int n, int *pN, int isCmd);

/*
** Perform substitution on the word contained in the input string (z, n).
** Store the resulting string in the interpreter result.
*/
static int thSubstWord(Th_Interp*, const char *z, int n);

/*
** The Buffer structure and the thBufferXXX() functions are used to make
** memory allocation easier when building up a result.
*/
struct Buffer {
  char *zBuf;
  int nBuf;
  int nBufAlloc;
};
typedef struct Buffer Buffer;
static int  thBufferWrite(Th_Interp *interp, Buffer *, const char *, int);
static void thBufferInit(Buffer *);
static void thBufferFree(Th_Interp *interp, Buffer *);

/*
** This version of memcpy() allows the first and second argument to
** be NULL as long as the number of bytes to copy is zero.
*/
static void th_memcpy(void *dest, const void *src, size_t n){
  if( n>0 ) memcpy(dest,src,n);
}

/*
** Append nAdd bytes of content copied from zAdd to the end of buffer
** pBuffer. If there is not enough space currently allocated, resize
** the allocation to make space.
*/
static void thBufferWriteResize(
  Th_Interp *interp,
  Buffer *pBuffer,
  const char *zAdd,
  int nAdd
){
  int nNew = (pBuffer->nBuf+nAdd)*2+32;
#if defined(TH_MEMDEBUG)
  char *zNew = (char *)Th_Malloc(interp, nNew);
  th_memcpy(zNew, pBuffer->zBuf, pBuffer->nBuf);
  Th_Free(interp, pBuffer->zBuf);
  pBuffer->zBuf = zNew;
#else
  int nOld = pBuffer->nBufAlloc;
  pBuffer->zBuf = Th_Realloc(interp, pBuffer->zBuf, nNew);
  memset(pBuffer->zBuf+nOld, 0, nNew-nOld);
#endif
  pBuffer->nBufAlloc = nNew;
  th_memcpy(&pBuffer->zBuf[pBuffer->nBuf], zAdd, nAdd);
  pBuffer->nBuf += nAdd;
}
static int thBufferWrite(
  Th_Interp *interp, 
  Buffer *pBuffer, 
  const char *zAdd, 
static void thBufferWriteFast(
  Th_Interp *interp,
  Buffer *pBuffer,
  const char *zAdd,
  int nAdd
){
  if( pBuffer->nBuf+nAdd > pBuffer->nBufAlloc ){
  int nReq;

  if( nAdd<0 ){
    nAdd = th_strlen(zAdd);
  }
  nReq = pBuffer->nBuf+nAdd+1;

    thBufferWriteResize(interp, pBuffer, zAdd, nAdd);
  }else{
    if( pBuffer->zBuf ){
      memcpy(pBuffer->zBuf + pBuffer->nBuf, zAdd, nAdd);
    }
    pBuffer->nBuf += nAdd;
  }
  if( nReq>pBuffer->nBufAlloc ){
    char *zNew;
    int nNew;

}
    nNew = nReq*2;
    zNew = (char *)Th_Malloc(interp, nNew);
    memcpy(zNew, pBuffer->zBuf, pBuffer->nBuf);
    Th_Free(interp, pBuffer->zBuf);
    pBuffer->nBufAlloc = nNew;
    pBuffer->zBuf = zNew;
  }

  memcpy(&pBuffer->zBuf[pBuffer->nBuf], zAdd, nAdd);
  pBuffer->nBuf += nAdd;
  pBuffer->zBuf[pBuffer->nBuf] = '\0';

#define thBufferWrite(a,b,c,d) thBufferWriteFast(a,b,(const char *)c,d)

/*
** Add a single character to a buffer
*/
static void thBufferAddChar(
  Th_Interp *interp,
  Buffer *pBuffer,
  char c
){
  if( pBuffer->nBuf+1 > pBuffer->nBufAlloc ){
    thBufferWriteResize(interp, pBuffer, &c, 1);
  }else{
    pBuffer->zBuf[pBuffer->nBuf++] = c;
  }
  return TH_OK;
}
#define thBufferWrite(a,b,c,d) thBufferWrite(a,b,(const char *)c,d)

/*
** Initialize the Buffer structure pointed to by pBuffer.
*/
static void thBufferInit(Buffer *pBuffer){
  memset(pBuffer, 0, sizeof(Buffer));
}
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+
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+











+
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+








+
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-
+






+
+
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+
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+
+
+
+
+
+
+
+
+
+
+







    case 'f': case 'F': return 15;
  }
  return -1;
}

/*
** Argument pEntry points to an entry in a stack frame hash table
** (Th_Frame.paVar). Decrement the refrerence count of the Th_Variable
** (Th_Frame.paVar). Decrement the reference count of the Th_Variable
** structure that the entry points to. Free the Th_Variable if its
** reference count reaches 0.
**
** Argument pContext is a pointer to the interpreter structure.
**
** Returns non-zero if the Th_Variable was actually freed.
*/
static void thFreeVariable(Th_HashEntry *pEntry, void *pContext){
static int thFreeVariable(Th_HashEntry *pEntry, void *pContext){
  Th_Variable *pValue = (Th_Variable *)pEntry->pData;
  pValue->nRef--;
  assert( pValue->nRef>=0 );
  if( pValue->nRef==0 ){
    Th_Interp *interp = (Th_Interp *)pContext;
    Th_Free(interp, pValue->zData);
    if( pValue->pHash ){
      Th_HashIterate(interp, pValue->pHash, thFreeVariable, pContext);
      Th_HashDelete(interp, pValue->pHash);
    }
    Th_Free(interp, pValue);
    pEntry->pData = 0;
    return 1;
  }
  return 0;
}

/*
** Argument pEntry points to an entry in the command hash table
** (Th_Interp.paCmd). Delete the Th_Command structure that the
** entry points to.
**
** Argument pContext is a pointer to the interpreter structure.
**
** Always returns non-zero.
*/
static void thFreeCommand(Th_HashEntry *pEntry, void *pContext){
static int thFreeCommand(Th_HashEntry *pEntry, void *pContext){
  Th_Command *pCommand = (Th_Command *)pEntry->pData;
  if( pCommand->xDel ){
    pCommand->xDel((Th_Interp *)pContext, pCommand->pContext);
  }
  Th_Free((Th_Interp *)pContext, pEntry->pData);
  pEntry->pData = 0;
  return 1;
}

/*
** Argument pEntry points to an entry in a hash table.  The key is
** the list element to be added.
**
** Argument pContext is a pointer to the Th_InterpAndList structure.
**
** Always returns non-zero.
*/
static int thListAppendHashKey(Th_HashEntry *pEntry, void *pContext){
  Th_InterpAndList *pInterpAndList = (Th_InterpAndList *)pContext;
  Th_ListAppend(pInterpAndList->interp, pInterpAndList->pzList,
                pInterpAndList->pnList, pEntry->zKey, pEntry->nKey);
  return 1;
}

/*
** Push a new frame onto the stack.
*/
static int thPushFrame(Th_Interp *interp, Th_Frame *pFrame){
  pFrame->paVar = Th_HashNew(interp);
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406
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414







-
+






-
-
+
+







  Th_Frame *pFrame = interp->pFrame;
  Th_HashIterate(interp, pFrame->paVar, thFreeVariable, (void *)interp);
  Th_HashDelete(interp, pFrame->paVar);
  interp->pFrame = pFrame->pCaller;
}

/*
** The first part of the string (zInput,nInput) contains an escape 
** The first part of the string (zInput,nInput) contains an escape
** sequence. Set *pnEscape to the number of bytes in the escape sequence.
** If there is a parse error, return TH_ERROR and set the interpreter
** result to an error message. Otherwise return TH_OK.
*/
static int thNextEscape(
  Th_Interp *interp,
  const char *zInput, 
  int nInput, 
  const char *zInput,
  int nInput,
  int *pnEscape
){
  int i = 2;

  assert(nInput>0);
  assert(zInput[0]=='\\');

341
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350
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356
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438
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446







-
-
+
+




-
-
+
+







  }
  *pnEscape = i;
  return TH_OK;
}

/*
** The first part of the string (zInput,nInput) contains a variable
** reference. Set *pnVarname to the number of bytes in the variable 
** reference. If there is a parse error, return TH_ERROR and set the 
** reference. Set *pnVarname to the number of bytes in the variable
** reference. If there is a parse error, return TH_ERROR and set the
** interpreter result to an error message. Otherwise return TH_OK.
*/
int thNextVarname(
  Th_Interp *interp,
  const char *zInput, 
  int nInput, 
  const char *zInput,
  int nInput,
  int *pnVarname
){
  int i;

  assert(nInput>0);
  assert(zInput[0]=='$');

398
399
400
401
402
403
404
405
406
407



408
409
410
411
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414
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488



489
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494
495


496
497
498
499
500
501
502
503
504







-
-
-
+
+
+




-
-
+
+








  *pnVarname = i;
  return TH_OK;
}

/*
** The first part of the string (zInput,nInput) contains a command
** enclosed in a "[]" block. Set *pnCommand to the number of bytes in 
** the variable reference. If there is a parse error, return TH_ERROR 
** and set the interpreter result to an error message. Otherwise return 
** enclosed in a "[]" block. Set *pnCommand to the number of bytes in
** the variable reference. If there is a parse error, return TH_ERROR
** and set the interpreter result to an error message. Otherwise return
** TH_OK.
*/
int thNextCommand(
  Th_Interp *interp,
  const char *zInput, 
  int nInput, 
  const char *zInput,
  int nInput,
  int *pnCommand
){
  int nBrace = 0;
  int nSquare = 0;
  int i;

  assert(nInput>0);
435
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437
438
439
440
441
442

443
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445
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447
448


449
450
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453
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461

462
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466
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472
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526
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544

545
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548
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562







-
+




-
-
+
+












-
+


-
-
+
+




-
-
+
+








  *pnCommand = i;

  return TH_OK;
}

/*
** Set *pnSpace to the number of whitespace bytes at the start of 
** Set *pnSpace to the number of whitespace bytes at the start of
** input string (zInput, nInput). Always return TH_OK.
*/
int thNextSpace(
  Th_Interp *interp,
  const char *zInput, 
  int nInput, 
  const char *zInput,
  int nInput,
  int *pnSpace
){
  int i;
  for(i=0; i<nInput && th_isspace(zInput[i]); i++);
  *pnSpace = i;
  return TH_OK;
}

/*
** The first byte of the string (zInput,nInput) is not white-space.
** Set *pnWord to the number of bytes in the th1 word that starts
** with this byte. If a complete word cannot be parsed or some other
** error occurs, return TH_ERROR and set the interpreter result to 
** error occurs, return TH_ERROR and set the interpreter result to
** an error message. Otherwise return TH_OK.
**
** If the isCmd argument is non-zero, then an unescaped ";" byte not 
** located inside of a block or quoted string is considered to mark 
** If the isCmd argument is non-zero, then an unescaped ";" byte not
** located inside of a block or quoted string is considered to mark
** the end of the word.
*/
static int thNextWord(
  Th_Interp *interp,
  const char *zInput, 
  int nInput, 
  const char *zInput,
  int nInput,
  int *pnWord,
  int isCmd
){
  int iEnd = 0;

  assert( !th_isspace(zInput[0]) );

499
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502
503
504
505

506
507
508
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510
511

512
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593
594
595
596
597
598
599
600
601
602
603
604







+






+







        case '[': if( nBrace==0 ) nSq++; break;
        case ']': if( nBrace==0 ) nSq--; break;
      }
      iEnd++;
    }
    if( nBrace>0 || nSq>0 ){
      /* Parse error */
      Th_SetResult(interp, "parse error", -1);
      return TH_ERROR;
    }
  }

  if( iEnd>nInput ){
    /* Parse error */
    Th_SetResult(interp, "parse error", -1);
    return TH_ERROR;
  }
  *pnWord = iEnd;
  return TH_OK;
}

/*
528
529
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531
532
533
534
535
536


537
538
539
540
541
542
543
614
615
616
617
618
619
620


621
622
623
624
625
626
627
628
629







-
-
+
+







  assert(nWord>=2);
  assert(zWord[0]=='[' && zWord[nWord-1]==']');
  return thEvalLocal(interp, &zWord[1], nWord-2);
}

/*
** The input string (zWord, nWord) contains a th1 variable reference
** (a '$' byte followed by a variable name). Perform substitution on 
** the input string and store the resulting string in the interpreter 
** (a '$' byte followed by a variable name). Perform substitution on
** the input string and store the resulting string in the interpreter
** result.
*/
static int thSubstVarname(
  Th_Interp *interp,
  const char *zWord,
  int nWord
){
558
559
560
561
562
563
564
565

566
567
568
569
570
571
572
573
574
575
576

577
578
579
580
581
582
583
644
645
646
647
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649
650

651
652
653
654
655
656
657
658
659
660
661

662
663
664
665
666
667
668
669







-
+










-
+







      int rc = thSubstWord(interp, &zWord[i+1], nWord-i-2);
      if( rc!=TH_OK ) return rc;

      zInner = Th_GetResult(interp, &nInner);
      thBufferInit(&varname);
      thBufferWrite(interp, &varname, &zWord[1], i);
      thBufferWrite(interp, &varname, zInner, nInner);
      thBufferWrite(interp, &varname, ")", 1);
      thBufferAddChar(interp, &varname, ')');
      rc = Th_GetVar(interp, varname.zBuf, varname.nBuf);
      thBufferFree(interp, &varname);
      return rc;
    }
  }
  return Th_GetVar(interp, &zWord[1], nWord-1);
}

/*
** The input string (zWord, nWord) contains a th1 escape sequence.
** Perform substitution on the input string and store the resulting 
** Perform substitution on the input string and store the resulting
** string in the interpreter result.
*/
static int thSubstEscape(
  Th_Interp *interp,
  const char *zWord,
  int nWord
){
605
606
607
608
609
610
611
612

613
614
615
616
617
618
619
620
621
622
623
624
625
626
627

628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644

645
646
647
648

649
650
651
652
653

654
655
656
657

658
659
660
661
662
663
664
665
666
667
668
669
670

671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689

690
691
692
693
694
695
696
691
692
693
694
695
696
697

698
699
700
701
702
703
704
705
706
707
708
709
710
711
712

713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729

730
731
732
733

734
735
736
737
738

739
740
741
742

743
744
745
746
747
748
749
750
751
752
753
754
755

756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774

775
776
777
778
779
780
781
782







-
+














-
+
















-
+



-
+




-
+



-
+












-
+


















-
+








  Th_SetResult(interp, &c, 1);
  return TH_OK;
}

/*
** The input string (zWord, nWord) contains a th1 word. Perform
** substitution on the input string and store the resulting 
** substitution on the input string and store the resulting
** string in the interpreter result.
*/
static int thSubstWord(
  Th_Interp *interp,
  const char *zWord,
  int nWord
){
  int rc = TH_OK;
  Buffer output;
  int i;

  thBufferInit(&output);

  if( nWord>1 && (zWord[0]=='{' && zWord[nWord-1]=='}') ){
    rc = thBufferWrite(interp, &output, &zWord[1], nWord-2);
    thBufferWrite(interp, &output, &zWord[1], nWord-2);
  }else{

    /* If the word is surrounded by double-quotes strip these away. */
    if( nWord>1 && (zWord[0]=='"' && zWord[nWord-1]=='"') ){
      zWord++;
      nWord -= 2;
    }

    for(i=0; rc==TH_OK && i<nWord; i++){
      int nGet;

      int (*xGet)(Th_Interp *, const char*, int, int *) = 0;
      int (*xSubst)(Th_Interp *, const char*, int) = 0;

      switch( zWord[i] ){
        case '\\':
          xGet = thNextEscape; xSubst = thSubstEscape; 
          xGet = thNextEscape; xSubst = thSubstEscape;
          break;
        case '[':
          if( !interp->isListMode ){
            xGet = thNextCommand; xSubst = thSubstCommand; 
            xGet = thNextCommand; xSubst = thSubstCommand;
            break;
          }
        case '$':
          if( !interp->isListMode ){
            xGet = thNextVarname; xSubst = thSubstVarname; 
            xGet = thNextVarname; xSubst = thSubstVarname;
            break;
          }
        default: {
          thBufferWrite(interp, &output, &zWord[i], 1);
          thBufferAddChar(interp, &output, zWord[i]);
          continue; /* Go to the next iteration of the for(...) loop */
        }
      }

      rc = xGet(interp, &zWord[i], nWord-i, &nGet);
      if( rc==TH_OK ){
        rc = xSubst(interp, &zWord[i], nGet);
      }
      if( rc==TH_OK ){
        const char *zRes;
        int nRes;
        zRes = Th_GetResult(interp, &nRes);
        rc = thBufferWrite(interp, &output, zRes, nRes);
        thBufferWrite(interp, &output, zRes, nRes);
        i += (nGet-1);
      }
    }
  }

  if( rc==TH_OK ){
    Th_SetResult(interp, output.zBuf, output.nBuf);
  }
  thBufferFree(interp, &output);
  return rc;
}

/*
** Return true if one of the following is true of the buffer pointed
** to by zInput, length nInput:
**
**   + It is empty, or
**   + It contains nothing but white-space, or
**   + It contains no non-white-space characters before the first 
**   + It contains no non-white-space characters before the first
**     newline character.
**
** Otherwise return false.
*/
static int thEndOfLine(const char *zInput, int nInput){
  int i;
  for(i=0; i<nInput && zInput[i]!='\n' && th_isspace(zInput[i]); i++);
722
723
724
725
726
727
728
729

730
731
732

733
734

735
736
737
738
739
740
741
808
809
810
811
812
813
814

815
816
817

818
819

820
821
822
823
824
825
826
827







-
+


-
+

-
+







**     Th_SplitList(interp, zList, nList, &argv, &argl, &argc);
**
**     // Free all memory allocated by Th_SplitList(). The arrays pointed
**     // to by argv and argl are invalidated by this call.
**     //
**     Th_Free(interp, argv);
**
*/ 
*/
static int thSplitList(
  Th_Interp *interp,      /* Interpreter context */
  const char *zList,     /* Pointer to buffer containing input list */
  const char *zList,      /* Pointer to buffer containing input list */
  int nList,              /* Size of buffer pointed to by zList */
  char ***pazElem,       /* OUT: Array of list elements */
  char ***pazElem,        /* OUT: Array of list elements */
  int **panElem,          /* OUT: Lengths of each list element */
  int *pnCount            /* OUT: Number of list elements */
){
  int rc = TH_OK;

  Buffer strbuf;
  Buffer lenbuf;
761
762
763
764
765
766
767
768

769
770
771
772
773

774
775
776
777
778

779
780
781

782
783
784
785
786
787
788


789
790
791
792
793
794
795
796
797
798
799

800
801
802
803
804
805
806
847
848
849
850
851
852
853

854
855
856
857
858

859
860
861
862
863

864
865
866

867
868
869
870
871
872


873
874
875
876
877
878
879
880
881
882
883
884

885
886
887
888
889
890
891
892







-
+




-
+




-
+


-
+





-
-
+
+










-
+







      goto finish;
    }
    zInput = &zInput[nWord];
    nInput = nList-(zInput-zList);
    if( nWord>0 ){
      zWord = Th_GetResult(interp, &nWord);
      thBufferWrite(interp, &strbuf, zWord, nWord);
      thBufferWrite(interp, &strbuf, "\0", 1);
      thBufferAddChar(interp, &strbuf, 0);
      thBufferWrite(interp, &lenbuf, &nWord, sizeof(int));
      nCount++;
    }
  }
  assert((lenbuf.nBuf/sizeof(int))==nCount);
  assert((int)(lenbuf.nBuf/sizeof(int))==nCount);

  assert((pazElem && panElem) || (!pazElem && !panElem));
  if( pazElem && rc==TH_OK ){
    int i;
    char *zElem; 
    char *zElem;
    int *anElem;
    char **azElem = Th_Malloc(interp,
      sizeof(char*) * nCount +      /* azElem */
      sizeof(char*) * nCount +       /* azElem */
      sizeof(int) * nCount +         /* anElem */
      strbuf.nBuf                    /* space for list element strings */
    );
    anElem = (int *)&azElem[nCount];
    zElem = (char *)&anElem[nCount];
    memcpy(anElem, lenbuf.zBuf, lenbuf.nBuf);
    memcpy(zElem, strbuf.zBuf, strbuf.nBuf);
    th_memcpy(anElem, lenbuf.zBuf, lenbuf.nBuf);
    th_memcpy(zElem, strbuf.zBuf, strbuf.nBuf);
    for(i=0; i<nCount;i++){
      azElem[i] = zElem;
      zElem += (anElem[i] + 1);
    }
    *pazElem = azElem;
    *panElem = anElem;
  }
  if( pnCount ){
    *pnCount = nCount;
  }
  

 finish:
  thBufferFree(interp, &strbuf);
  thBufferFree(interp, &lenbuf);
  return rc;
}

/*
844
845
846
847
848
849
850
851

852
853
854
855
856
857
858
930
931
932
933
934
935
936

937
938
939
940
941
942
943
944







-
+







      continue;
    }

    /* Gobble up input a word at a time until the end of the command
    ** (a semi-colon or end of line).
    */
    while( rc==TH_OK && *zInput!=';' && !thEndOfLine(zInput, nInput) ){
      int nWord;
      int nWord=0;
      thNextSpace(interp, zInput, nInput, &nSpace);
      rc = thNextWord(interp, &zInput[nSpace], nInput-nSpace, &nWord, 1);
      zInput += (nSpace+nWord);
      nInput -= (nSpace+nWord);
    }
    if( rc!=TH_OK ) continue;

873
874
875
876
877
878
879
880
881


882
883
884
885
886
887

888
889
890
891
892
893
894
959
960
961
962
963
964
965


966
967
968
969
970
971
972

973
974
975
976
977
978
979
980







-
-
+
+





-
+








      /* Call the command procedure. */
      if( rc==TH_OK ){
        Th_Command *p = (Th_Command *)(pEntry->pData);
        const char **azArg = (const char **)argv;
        rc = p->xProc(interp, p->pContext, argc, azArg, argl);
      }
  
      /* If an error occured, add this command to the stack trace report. */

      /* If an error occurred, add this command to the stack trace report. */
      if( rc==TH_ERROR ){
        char *zRes;
        int nRes;
        char *zStack = 0;
        int nStack = 0;
  

        zRes = Th_TakeResult(interp, &nRes);
        if( TH_OK==Th_GetVar(interp, (char *)"::th_stack_trace", -1) ){
          zStack = Th_TakeResult(interp, &nStack);
        }
        Th_ListAppend(interp, &zStack, &nStack, zFirst, zInput-zFirst);
        Th_SetVar(interp, (char *)"::th_stack_trace", -1, zStack, nStack);
        Th_SetResult(interp, zRes, nRes);
909
910
911
912
913
914
915
916
917


918
919
920

921
922
923
924
925
926
927
995
996
997
998
999
1000
1001


1002
1003
1004
1005

1006
1007
1008
1009
1010
1011
1012
1013







-
-
+
+


-
+







** Th_Frame structure. If unsuccessful (no such frame), return 0 and
** leave an error message in the interpreter result.
**
** Argument iFrame is interpreted as follows:
**
**   * If iFrame is 0, this means the current frame.
**
**   * If iFrame is negative, then the nth frame up the stack, where 
**     n is the absolute value of iFrame. A value of -1 means the 
**   * If iFrame is negative, then the nth frame up the stack, where
**     n is the absolute value of iFrame. A value of -1 means the
**     calling procedure.
**
**   * If iFrame is +ve, then the nth frame from the bottom of the 
**   * If iFrame is +ve, then the nth frame from the bottom of the
**     stack. An iFrame value of 1 means the toplevel (global) frame.
*/
static Th_Frame *getFrame(Th_Interp *interp, int iFrame){
  Th_Frame *p = interp->pFrame;
  int i;
  if( iFrame>0 ){
    for(i=0; p; i++){
945
946
947
948
949
950
951
952

953
954
955
956
957
958
959

960
961
962
963
964
965
966
967
968
969

970
971
972
973
974
975
976
1031
1032
1033
1034
1035
1036
1037

1038
1039
1040
1041
1042
1043
1044

1045
1046
1047
1048
1049
1050
1051
1052
1053
1054

1055
1056
1057
1058
1059
1060
1061
1062







-
+






-
+









-
+







  return p;
}


/*
** Evaluate th1 script (zProgram, nProgram) in the frame identified by
** argument iFrame. Leave either an error message or a result in the
** interpreter result and return a th1 error code (TH_OK, TH_ERROR, 
** interpreter result and return a th1 error code (TH_OK, TH_ERROR,
** TH_RETURN, TH_CONTINUE or TH_BREAK).
*/
int Th_Eval(Th_Interp *interp, int iFrame, const char *zProgram, int nProgram){
  int rc = TH_OK;
  Th_Frame *pSavedFrame = interp->pFrame;

  /* Set Th_Interp.pFrame to the frame that this script is to be 
  /* Set Th_Interp.pFrame to the frame that this script is to be
  ** evaluated in. The current frame is saved in pSavedFrame and will
  ** be restored before this function returns.
  */
  interp->pFrame = getFrame(interp, iFrame);

  if( !interp->pFrame ){
    rc = TH_ERROR;
  }else{
    int nInput = nProgram;
  

    if( nInput<0 ){
      nInput = th_strlen(zProgram);
    }
    rc = thEvalLocal(interp, zProgram, nInput);
  }

  interp->pFrame = pSavedFrame;
992
993
994
995
996
997
998
999

1000
1001

1002
1003
1004
1005
1006
1007
1008
1078
1079
1080
1081
1082
1083
1084

1085
1086

1087
1088
1089
1090
1091
1092
1093
1094







-
+

-
+







** array variable. If the variable is a scalar, *pzInner is set to 0.
** If it is an array variable, (*pzInner, *pnInner) is set to the
** array key name.
*/
static int thAnalyseVarname(
  const char *zVarname,
  int nVarname,
  const char **pzOuter,     /* OUT: Pointer to scalar/array name */
  const char **pzOuter,      /* OUT: Pointer to scalar/array name */
  int *pnOuter,              /* OUT: Number of bytes at *pzOuter */
  const char **pzInner,     /* OUT: Pointer to array key (or null) */
  const char **pzInner,      /* OUT: Pointer to array key (or null) */
  int *pnInner,              /* OUT: Number of bytes at *pzInner */
  int *pisGlobal             /* OUT: Set to true if this is a global ref */
){
  const char *zOuter = zVarname;
  int nOuter;
  const char *zInner = 0;
  int nInner = 0;
1039
1040
1041
1042
1043
1044
1045
1046















1047
1048

1049
1050
1051
1052
1053
1054
1055
1056
1057

1058

1059
1060
1061
1062
1063
1064






1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076





1077
1078
1079
1080
1081
1082




1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096

1097


1098
1099
1100
1101
1102
1103
1104
1105
1106




1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118

1119


1120
1121
1122
1123
1124
1125
1126

1127


1128
1129
1130
1131
1132
1133


1134
1135
1136
1137
1138
1139
1140
1141
1142

1143
1144
1145
1146
1147
1148
1149
1150
1151
1152





































1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164


1165
1166
1167
1168
1169
1170
1171

1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187

1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199

1200
1201

1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214

1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234

1235


1236
1237

1238
1239

1240
1241































1242
1243
1244
1245
1246
1247
1248
1249

















1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263

1264
1265
1266
1267
1268
1269
1270
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148

1149
1150
1151
1152
1153
1154
1155
1156
1157

1158
1159
1160
1161
1162




1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190

1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209

1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237

1238
1239
1240
1241
1242
1243
1244
1245
1246
1247

1248
1249
1250
1251
1252
1253


1254
1255
1256
1257
1258
1259
1260
1261
1262
1263

1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321


1322
1323
1324
1325
1326
1327
1328
1329

1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345

1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357

1358
1359

1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372

1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398

1399
1400

1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434








1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464

1465
1466
1467
1468
1469
1470
1471
1472








+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
+








-
+

+


-
-
-
-
+
+
+
+
+
+












+
+
+
+
+





-
+
+
+
+














+
-
+
+









+
+
+
+












+
-
+
+







+
-
+
+




-
-
+
+








-
+










+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+










-
-
+
+






-
+















-
+











-
+

-
+












-
+




















+

+
+

-
+

-
+


+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+













-
+







  *pnOuter = nOuter;
  *pzInner = zInner;
  *pnInner = nInner;
  *pisGlobal = isGlobal;
  return TH_OK;
}

/*
** The Find structure is used to return extra information to callers of the
** thFindValue function.  The fields within it are populated by thFindValue
** as soon as the necessary information is available.  Callers should check
** each field of interest upon return.
*/

struct Find {
  Th_HashEntry *pValueEntry; /* Pointer to the scalar or array hash entry */
  Th_HashEntry *pElemEntry;  /* Pointer to array element hash entry, if any */
  const char *zElem;         /* Name of array element, if applicable */
  int nElem;                 /* Length of array element name, if applicable */
};
typedef struct Find Find;

/*
** Input string (zVar, nVar) contains a variable name. This function locates
** the Th_Variable structure associated with the named variable. The 
** the Th_Variable structure associated with the named variable. The
** variable name may be a global or local scalar or array variable
**
** If the create argument is non-zero and the named variable does not exist
** it is created. Otherwise, an error is left in the interpreter result
** and NULL returned.
**
** If the arrayok argument is false and the named variable is an array,
** an error is left in the interpreter result and NULL returned. If
** arrayok is true an array name is Ok.
** arrayok is true an array name is OK.
*/

static Th_Variable *thFindValue(
  Th_Interp *interp,
  const char *zVar,     /* Pointer to variable name */
  int nVar,              /* Number of bytes at nVar */
  int create,            /* If true, create the variable if not found */
  int arrayok            /* If true, an array is Ok. Othewise array==error */
  const char *zVar,       /* Pointer to variable name */
  int nVar,               /* Number of bytes at nVar */
  int create,             /* If true, create the variable if not found */
  int arrayok,            /* If true, an array is OK. Otherwise array==error */
  int noerror,            /* If false, set interpreter result to error */
  Find *pFind             /* If non-zero, place output here */
){
  const char *zOuter;
  int nOuter;
  const char *zInner;
  int nInner;
  int isGlobal;

  Th_HashEntry *pEntry;
  Th_Frame *pFrame = interp->pFrame;
  Th_Variable *pValue;

  thAnalyseVarname(zVar, nVar, &zOuter, &nOuter, &zInner, &nInner, &isGlobal);
  if( pFind ){
    memset(pFind, 0, sizeof(Find));
    pFind->zElem = zInner;
    pFind->nElem = nInner;
  }
  if( isGlobal ){
    while( pFrame->pCaller ) pFrame = pFrame->pCaller;
  }

  pEntry = Th_HashFind(interp, pFrame->paVar, zOuter, nOuter, create);
  assert(pEntry || !create);
  assert(pEntry || create<=0);
  if( pFind ){
    pFind->pValueEntry = pEntry;
  }
  if( !pEntry ){
    goto no_such_var;
  }

  pValue = (Th_Variable *)pEntry->pData;
  if( !pValue ){
    assert(create);
    pValue = Th_Malloc(interp, sizeof(Th_Variable));
    pValue->nRef = 1;
    pEntry->pData = (void *)pValue;
  }

  if( zInner ){
    if( pValue->zData ){
      if( !noerror ){
      Th_ErrorMessage(interp, "variable is a scalar:", zOuter, nOuter);
        Th_ErrorMessage(interp, "variable is a scalar:", zOuter, nOuter);
      }
      return 0;
    }
    if( !pValue->pHash ){
      if( !create ){
        goto no_such_var;
      }
      pValue->pHash = Th_HashNew(interp);
    }
    pEntry = Th_HashFind(interp, pValue->pHash, zInner, nInner, create);
    assert(pEntry || create<=0);
    if( pFind ){
      pFind->pElemEntry = pEntry;
    }
    if( !pEntry ){
      goto no_such_var;
    }
    pValue = (Th_Variable *)pEntry->pData;
    if( !pValue ){
      assert(create);
      pValue = Th_Malloc(interp, sizeof(Th_Variable));
      pValue->nRef = 1;
      pEntry->pData = (void *)pValue;
    }
  }else{
    if( pValue->pHash && !arrayok ){
      if( !noerror ){
      Th_ErrorMessage(interp, "variable is an array:", zOuter, nOuter);
        Th_ErrorMessage(interp, "variable is an array:", zOuter, nOuter);
      }
      return 0;
    }
  }

  return pValue;

no_such_var:
  if( !noerror ){
  Th_ErrorMessage(interp, "no such variable:", zVar, nVar);
    Th_ErrorMessage(interp, "no such variable:", zVar, nVar);
  }
  return 0;
}

/*
** String (zVar, nVar) must contain the name of a scalar variable or 
** array member. Look up the variable, store its current value in 
** String (zVar, nVar) must contain the name of a scalar variable or
** array member. Look up the variable, store its current value in
** the interpreter result and return TH_OK.
**
** If the named variable does not exist, return TH_ERROR and leave
** an error message in the interpreter result.
*/
int Th_GetVar(Th_Interp *interp, const char *zVar, int nVar){
  Th_Variable *pValue;

  pValue = thFindValue(interp, zVar, nVar, 0, 0);
  pValue = thFindValue(interp, zVar, nVar, 0, 0, 0, 0);
  if( !pValue ){
    return TH_ERROR;
  }
  if( !pValue->zData ){
    Th_ErrorMessage(interp, "no such variable:", zVar, nVar);
    return TH_ERROR;
  }

  return Th_SetResult(interp, pValue->zData, pValue->nData);
}

/*
** If interp has a variable with the given name, its value is returned
** and its length is returned via *nOut if nOut is not NULL.  If
** interp has no such var then NULL is returned without setting any
** error state and *nOut, if not NULL, is set to -1. The returned value
** is owned by the interpreter and may be invalidated the next time
** the interpreter is modified.
*/
const char * Th_MaybeGetVar(Th_Interp *interp, const char *zVarName,
                            int *nOut){
  Th_Variable *pValue;

  pValue = thFindValue(interp, zVarName, -1, 0, 0, 1, 0);
  if( !pValue || !pValue->zData ){
    if( nOut!=0 ) *nOut = -1;
    return NULL;
  }
  if( nOut!=0 ) *nOut = pValue->nData;
  return pValue->zData;
}

/*
** Return true if variable (zVar, nVar) exists.
*/
int Th_ExistsVar(Th_Interp *interp, const char *zVar, int nVar){
  Th_Variable *pValue = thFindValue(interp, zVar, nVar, 0, 1, 1, 0);
  return pValue && (pValue->zData || pValue->pHash);
}

/*
** Return true if array variable (zVar, nVar) exists.
*/
int Th_ExistsArrayVar(Th_Interp *interp, const char *zVar, int nVar){
  Th_Variable *pValue = thFindValue(interp, zVar, nVar, 0, 1, 1, 0);
  return pValue && !pValue->zData && pValue->pHash;
}

/*
** String (zVar, nVar) must contain the name of a scalar variable or
** array member. If the variable does not exist it is created. The
** variable is set to the value supplied in string (zValue, nValue).
**
** If (zVar, nVar) refers to an existing array, TH_ERROR is returned
** and an error message left in the interpreter result.
*/
int Th_SetVar(
  Th_Interp *interp, 
  const char *zVar, 
  Th_Interp *interp,
  const char *zVar,
  int nVar,
  const char *zValue,
  int nValue
){
  Th_Variable *pValue;

  pValue = thFindValue(interp, zVar, nVar, 1, 0);
  pValue = thFindValue(interp, zVar, nVar, 1, 0, 0, 0);
  if( !pValue ){
    return TH_ERROR;
  }

  if( nValue<0 ){
    nValue = th_strlen(zValue);
  }
  if( pValue->zData ){
    Th_Free(interp, pValue->zData);
    pValue->zData = 0;
  }

  assert(zValue || nValue==0);
  pValue->zData = Th_Malloc(interp, nValue+1);
  pValue->zData[nValue] = '\0';
  memcpy(pValue->zData, zValue, nValue);
  th_memcpy(pValue->zData, zValue, nValue);
  pValue->nData = nValue;

  return TH_OK;
}

/*
** Create a variable link so that accessing variable (zLocal, nLocal) is
** the same as accessing variable (zLink, nLink) in stack frame iFrame.
*/
int Th_LinkVar(
  Th_Interp *interp,                 /* Interpreter */
  const char *zLocal, int nLocal,   /* Local varname */
  const char *zLocal, int nLocal,    /* Local varname */
  int iFrame,                        /* Stack frame of linked var */
  const char *zLink, int nLink      /* Linked varname */
  const char *zLink, int nLink       /* Linked varname */
){
  Th_Frame *pSavedFrame = interp->pFrame;
  Th_Frame *pFrame;
  Th_HashEntry *pEntry;
  Th_Variable *pValue;

  pFrame = getFrame(interp, iFrame);
  if( !pFrame ){
    return TH_ERROR;
  }
  pSavedFrame = interp->pFrame;
  interp->pFrame = pFrame;
  pValue = thFindValue(interp, zLink, nLink, 1, 1);
  pValue = thFindValue(interp, zLink, nLink, 1, 1, 0, 0);
  interp->pFrame = pSavedFrame;

  pEntry = Th_HashFind(interp, interp->pFrame->paVar, zLocal, nLocal, 1);
  if( pEntry->pData ){
    Th_ErrorMessage(interp, "variable exists:", zLocal, nLocal);
    return TH_ERROR;
  }
  pEntry->pData = (void *)pValue;
  pValue->nRef++;

  return TH_OK;
}

/*
** Input string (zVar, nVar) must contain the name of a scalar variable,
** an array, or an array member. If the identified variable exists, it
** is deleted and TH_OK returned. Otherwise, an error message is left
** in the interpreter result and TH_ERROR is returned.
*/
int Th_UnsetVar(Th_Interp *interp, const char *zVar, int nVar){
  Find find;
  Th_Variable *pValue;
  Th_HashEntry *pEntry;
  int rc = TH_ERROR;

  pValue = thFindValue(interp, zVar, nVar, 1, 1);
  pValue = thFindValue(interp, zVar, nVar, 0, 1, 0, &find);
  if( !pValue ){
    return TH_ERROR;
    return rc;
  }

  if( pValue->zData || pValue->pHash ){
    rc = TH_OK;
  }else {
    Th_ErrorMessage(interp, "no such variable:", zVar, nVar);
  }

  /*
  ** The variable may be shared by more than one frame; therefore, make sure
  ** it is actually freed prior to freeing the parent structure.  The values
  ** for the variable must be freed now so the variable appears undefined in
  ** all frames.  The hash entry in the current frame must also be deleted
  ** now; otherwise, if the current stack frame is later popped, it will try
  ** to delete a variable which has already been freed.
  */
  if( find.zElem ){
    pEntry = find.pElemEntry;
  }else{
    pEntry = find.pValueEntry;
  }
  assert( pEntry );
  assert( pValue );
  if( thFreeVariable(pEntry, (void *)interp) ){
    if( find.zElem ){
      Th_Variable *pValue2 = find.pValueEntry->pData;
      Th_HashFind(interp, pValue2->pHash, find.zElem, find.nElem, -1);
    }else if( pEntry->pData ){
      Th_Free(interp, pEntry->pData);
      pEntry->pData = 0;
    }
  }else{
    if( pValue->zData ){
  Th_Free(interp, pValue->zData);
  pValue->zData = 0;
  if( pValue->pHash ){
    Th_HashIterate(interp, pValue->pHash, thFreeVariable, (void *)interp);
    Th_HashDelete(interp, pValue->pHash);
    pValue->pHash = 0;
  }
  return TH_OK;
      Th_Free(interp, pValue->zData);
      pValue->zData = 0;
    }
    if( pValue->pHash ){
      Th_HashIterate(interp, pValue->pHash, thFreeVariable, (void *)interp);
      Th_HashDelete(interp, pValue->pHash);
      pValue->pHash = 0;
    }
    if( find.zElem ){
      Th_Variable *pValue2 = find.pValueEntry->pData;
      Th_HashFind(interp, pValue2->pHash, find.zElem, find.nElem, -1);
    }
  }
  if( !find.zElem ){
    Th_HashFind(interp, interp->pFrame->paVar, zVar, nVar, -1);
  }
  return rc;
}

/*
** Return an allocated buffer containing a copy of string (z, n). The
** caller is responsible for eventually calling Th_Free() to free
** the returned buffer.
*/
char *th_strdup(Th_Interp *interp, const char *z, int n){
  char *zRes;
  if( n<0 ){
    n = th_strlen(z);
  }
  zRes = Th_Malloc(interp, n+1);
  memcpy(zRes, z, n);
  th_memcpy(zRes, z, n);
  zRes[n] = '\0';
  return zRes;
}

/*
** Argument zPre must be a nul-terminated string. Set the interpreter
** result to a string containing the contents of zPre, followed by
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*/
int Th_ErrorMessage(Th_Interp *interp, const char *zPre, const char *z, int n){
  if( interp ){
    char *zRes = 0;
    int nRes = 0;

    Th_SetVar(interp, (char *)"::th_stack_trace", -1, 0, 0);
  

    Th_StringAppend(interp, &zRes, &nRes, zPre, -1);
    if( zRes[nRes-1]=='"' ){
      Th_StringAppend(interp, &zRes, &nRes, z, n);
      Th_StringAppend(interp, &zRes, &nRes, (const char *)"\"", 1);
    }else{
      Th_StringAppend(interp, &zRes, &nRes, (const char *)" ", 1);
      Th_StringAppend(interp, &zRes, &nRes, z, n);
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  if( n<0 ){
    n = th_strlen(z);
  }

  if( z && n>0 ){
    char *zResult;
    zResult = Th_Malloc(pInterp, n+1);
    memcpy(zResult, z, n);
    th_memcpy(zResult, z, n);
    zResult[n] = '\0';
    pInterp->zResult = zResult;
    pInterp->nResult = n;
  }

  return TH_OK;
}
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    pInterp->nResult = 0;
    return zResult;
  }else{
    return (char *)Th_Malloc(pInterp, 1);
  }
}


/* 
** Wrappers around the supplied malloc() and free() 
#if defined(TH_MEMDEBUG)
/*
** Wrappers around the supplied malloc() and free()
*/
void *Th_Malloc(Th_Interp *pInterp, int nByte){
  void *p = pInterp->pVtab->xMalloc(nByte);
  if( p ){
    memset(p, 0, nByte);
void *Th_DbgMalloc(Th_Interp *pInterp, int nByte){
  void *p;
  Th_Vtab *pVtab = pInterp->pVtab;
  if( pVtab ){
    p = pVtab->xMalloc(nByte);
    if( p ) memset(p, 0, nByte);
  }else{
    p = Th_SysMalloc(pInterp, nByte);
  }
  return p;
}
void Th_Free(Th_Interp *pInterp, void *z){
void Th_DbgFree(Th_Interp *pInterp, void *z){
  if( z ){
    Th_Vtab *pVtab = pInterp->pVtab;
    if( pVtab ){
    pInterp->pVtab->xFree(z);
  }
}

      pVtab->xFree(z);
    }else{
      Th_SysFree(pInterp, z);
    }
  }
}
#endif

/*
** Install a new th1 command. 
** Install a new th1 command.
**
** If a command of the same name already exists, it is deleted automatically.
*/
int Th_CreateCommand(
  Th_Interp *interp, 
  Th_Interp *interp,
  const char *zName,                 /* New command name */
  Th_CommandProc xProc,              /* Command callback proc */
  void *pContext,                    /* Value to pass as second arg to xProc */
  void (*xDel)(Th_Interp *, void *)  /* Command destructor callback */
){
  Th_HashEntry *pEntry;
  Th_Command *pCommand;
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  }else{
    pCommand = Th_Malloc(interp, sizeof(Th_Command));
  }
  pCommand->xProc = xProc;
  pCommand->pContext = pContext;
  pCommand->xDel = xDel;
  pEntry->pData = (void *)pCommand;
 

  return TH_OK;
}

/*
** Rename the existing command (zName, nName) to (zNew, nNew). If nNew is 0, 
** Rename the existing command (zName, nName) to (zNew, nNew). If nNew is 0,
** the command is deleted instead of renamed.
**
** If successful, TH_OK is returned. If command zName does not exist, or
** if command zNew already exists, an error message is left in the 
** if command zNew already exists, an error message is left in the
** interpreter result and TH_ERROR is returned.
*/
int Th_RenameCommand(
  Th_Interp *interp, 
  const char *zName,            /* Existing command name */
  Th_Interp *interp,
  const char *zName,             /* Existing command name */
  int nName,                     /* Number of bytes at zName */
  const char *zNew,             /* New command name */
  const char *zNew,              /* New command name */
  int nNew                       /* Number of bytes at zNew */
){
  Th_HashEntry *pEntry;
  Th_HashEntry *pNewEntry;

  pEntry = Th_HashFind(interp, interp->paCmd, zName, nName, 0);
  if( !pEntry ){
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** Split a th1 list into its component elements. The list to split is
** passed via arguments (zList, nList). If successful, TH_OK is returned.
** If an error occurs (if (zList, nList) is not a valid list) an error
** message is left in the interpreter result and TH_ERROR returned.
**
** If successful, *pnCount is set to the number of elements in the list.
** panElem is set to point at an array of *pnCount integers - the lengths
** of the element values. *pazElem is set to point at an array of 
** of the element values. *pazElem is set to point at an array of
** pointers to buffers containing the array element's data.
**
** To free the arrays allocated at *pazElem and *panElem, the caller
** should call Th_Free() on *pazElem only. Exactly one such call to
** Th_Free() must be made per call to Th_SplitList().
**
** Example:
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+



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+











+











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**     }
**
**     Th_Free(interp, azElem);
**
*/
int Th_SplitList(
  Th_Interp *interp,
  const char *zList,             /* Pointer to buffer containing list */
  const char *zList,              /* Pointer to buffer containing list */
  int nList,                      /* Number of bytes at zList */
  char ***pazElem,               /* OUT: Array of pointers to element data */
  char ***pazElem,                /* OUT: Array of pointers to element data */
  int **panElem,                  /* OUT: Array of element data lengths */
  int *pnCount                    /* OUT: Number of elements in list */
){
  int rc;
  interp->isListMode = 1;
  rc = thSplitList(interp, zList, nList, pazElem, panElem, pnCount);
  interp->isListMode = 0;
  if( rc ){
    Th_ErrorMessage(interp, "Expected list, got: \"", zList, nList);
  }
  return rc;
}

/*
** Append a new element to an existing th1 list. The element to append 
** Append a new element to an existing th1 list. The element to append
** to the list is (zElem, nElem).
**
** A pointer to the existing list must be stored at *pzList when this
** function is called. The length must be stored in *pnList. The value 
** of *pzList must either be NULL (in which case *pnList must be 0), or 
** function is called. The length must be stored in *pnList. The value
** of *pzList must either be NULL (in which case *pnList must be 0), or
** a pointer to memory obtained from Th_Malloc().
**
** This function calls Th_Free() to free the buffer at *pzList and sets
** *pzList to point to a new buffer containing the new list value. *pnList
** is similarly updated before returning. The return value is always TH_OK.
**
** Example:
**
**     char *zList = 0;
**     int nList = 0;
**     for (...) {
**       char *zElem = <some expression>;
**       Th_ListAppend(interp, &zList, &nList, zElem, -1);
**     }
**     Th_SetResult(interp, zList, nList);
**     Th_Free(interp, zList);
**
*/
int Th_ListAppend(
  Th_Interp *interp,           /* Interpreter context */
  char **pzList,              /* IN/OUT: Ptr to ptr to list */
  char **pzList,               /* IN/OUT: Ptr to ptr to list */
  int *pnList,                 /* IN/OUT: Current length of *pzList */
  const char *zElem,          /* Data to append */
  const char *zElem,           /* Data to append */
  int nElem                    /* Length of nElem */
){
  Buffer output;
  int i;

  int hasSpecialChar = 0;
  int hasEscapeChar = 0;
  int hasSpecialChar = 0;  /* Whitespace or {}[]'" */
  int hasEscapeChar = 0;   /* '}' without matching '{' to the left or a '\\' */
  int nBrace = 0;

  output.zBuf = *pzList;
  output.nBuf = *pnList;
  output.nBufAlloc = output.nBuf;

  if( nElem<0 ){
    nElem = th_strlen(zElem);
  }
  if( output.nBuf>0 ){
    thBufferWrite(interp, &output, " ", 1);
    thBufferAddChar(interp, &output, ' ');
  }

  for(i=0; i<nElem; i++){
    char c = zElem[i];
    if( th_isspecial(c) ) hasSpecialChar = 1;
    if( c=='\\' ) hasEscapeChar = 1;
    if( c=='\\' ){ hasEscapeChar = 1; break; }
    if( c=='{' ) nBrace++;
    if( c=='}' ) nBrace--;
    if( c=='}' ){
      if( nBrace==0 ){
        /* A closing brace that does not have a matching open brace to
        ** its left needs to be excaped.  See ticket 4d73b4a2258a78e2 */
        hasEscapeChar = 1;
        break;
      }else{
        nBrace--;
      }
    }
  }

  if( nElem==0 || (!hasEscapeChar && hasSpecialChar && nBrace==0) ){
    thBufferWrite(interp, &output, "{", 1);
    thBufferAddChar(interp, &output, '{');
    thBufferWrite(interp, &output, zElem, nElem);
    thBufferWrite(interp, &output, "}", 1);
    thBufferAddChar(interp, &output, '}');
  }else{
    for(i=0; i<nElem; i++){
      char c = zElem[i];
      if( th_isspecial(c) ) thBufferWrite(interp, &output, "\\", 1);
      thBufferWrite(interp, &output, &c, 1);
      if( th_isspecial(c) ) thBufferAddChar(interp, &output, '\\');
      thBufferAddChar(interp, &output, c);
    }
  }

  *pzList = output.zBuf;
  *pnList = output.nBuf;

  return TH_OK;
}

/*
** Append a new element to an existing th1 string. This function uses
** the same interface as the Th_ListAppend() function.
*/
int Th_StringAppend(
  Th_Interp *interp,           /* Interpreter context */
  char **pzStr,               /* IN/OUT: Ptr to ptr to list */
  char **pzStr,                /* IN/OUT: Ptr to ptr to list */
  int *pnStr,                  /* IN/OUT: Current length of *pzStr */
  const char *zElem,          /* Data to append */
  const char *zElem,           /* Data to append */
  int nElem                    /* Length of nElem */
){
  char *zNew;
  int nNew;

  if( nElem<0 ){
    nElem = th_strlen(zElem);
  }

  nNew = *pnStr + nElem;
  zNew = Th_Malloc(interp, nNew);
  memcpy(zNew, *pzStr, *pnStr);
  memcpy(&zNew[*pnStr], zElem, nElem);
  th_memcpy(zNew, *pzStr, *pnStr);
  th_memcpy(&zNew[*pnStr], zElem, nElem);

  Th_Free(interp, *pzStr);
  *pzStr = zNew;
  *pnStr = nNew;

  return TH_OK;
}

/* 
/*
** Initialize an interpreter.
*/
static int thInitialize(Th_Interp *interp){
  assert(interp->pFrame);

  Th_SetVar(interp, (char *)"::tcl_platform(engine)", -1, TH_ENGINE, -1);
  Th_SetVar(interp, (char *)"::tcl_platform(platform)", -1, TH_PLATFORM, -1);

  return TH_OK;
}

/*
** Delete an interpreter.
*/
void Th_DeleteInterp(Th_Interp *interp){
  assert(interp->pFrame);
  assert(0==interp->pFrame->pCaller);

  /* Delete the contents of the global frame. */
  thPopFrame(interp);

  /* Delete any result currently stored in the interpreter. */
  Th_SetResult(interp, 0, 0);

  /* Delete all registered commands and the command hash-table itself. */
  Th_HashIterate(interp, interp->paCmd, thFreeCommand, (void *)interp);
  Th_HashDelete(interp, interp->paCmd);

  /* Delete the interpreter structure itself. */
  Th_Free(interp, (void *)interp);
}

/* 
/*
** Create a new interpreter.
*/
Th_Interp * Th_CreateInterp(Th_Vtab *pVtab){
  int nByte = sizeof(Th_Interp) + sizeof(Th_Frame);
  Th_Interp *p;

  /* Allocate and initialise the interpreter and the global frame */
#if defined(TH_MEMDEBUG)
  if( pVtab ){
  p = pVtab->xMalloc(sizeof(Th_Interp) + sizeof(Th_Frame));
  memset(p, 0, sizeof(Th_Interp));
  p->pVtab = pVtab;
    p = pVtab->xMalloc(nByte);
    memset(p, 0, nByte);
    p->pVtab = pVtab;
  }else
#endif
  p = Th_SysMalloc(0, nByte);

  p->paCmd = Th_HashNew(p);
  thPushFrame(p, (Th_Frame *)&p[1]);
  thInitialize(p);

  return p;
}

/*
** These two types are used only by the expression module, where
** the expression module means the Th_Expr() and exprXXX() functions.
*/
typedef struct Operator Operator;
struct Operator {
  const char *zOp;
  int nOp;
  int eOp;
  int iPrecedence;
  int eArgType;
};
typedef struct Expr Expr;
struct Expr {
  Operator *pOp;
  Expr *pParent;
  Expr *pLeft;
  Expr *pRight;

  char *zValue;     /* Pointer to literal value */
  char *zValue;      /* Pointer to literal value */
  int nValue;        /* Length of literal value buffer */
};

/* Unary operators */
#define OP_UNARY_MINUS  2
#define OP_UNARY_PLUS   3
#define OP_BITWISE_NOT  4
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-
-
+
+


-
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-
+
+
+
+


-
+



-
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-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+

-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+

-
+



-
-
+
+

-
-
-
-
+
+
+
+



+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
+







*/
#define ARG_INTEGER 1
#define ARG_NUMBER  2
#define ARG_STRING  3

static Operator aOperator[] = {

  {"(",  OP_OPEN_BRACKET,   -1, 0},
  {")",  OP_CLOSE_BRACKET, -1, 0},
  {"(",  1, OP_OPEN_BRACKET,   -1, 0},
  {")",  1, OP_CLOSE_BRACKET, -1, 0},

  /* Note: all unary operators have (iPrecedence==1) */
  {"-",  OP_UNARY_MINUS,    1, ARG_NUMBER},
  {"+",  OP_UNARY_PLUS,     1, ARG_NUMBER},
  {"~",  OP_BITWISE_NOT,    1, ARG_INTEGER},
  {"!",  OP_LOGICAL_NOT,    1, ARG_INTEGER},
  {"-",  1, OP_UNARY_MINUS,    1, ARG_NUMBER},
  {"+",  1, OP_UNARY_PLUS,     1, ARG_NUMBER},
  {"~",  1, OP_BITWISE_NOT,    1, ARG_INTEGER},
  {"!",  1, OP_LOGICAL_NOT,    1, ARG_INTEGER},

  /* Binary operators. It is important to the parsing in Th_Expr() that
   * the two-character symbols ("==") appear before the one-character 
   * the two-character symbols ("==") appear before the one-character
   * ones ("="). And that the priorities of all binary operators are
   * integers between 2 and 12.
   */
  {"<<", OP_LEFTSHIFT,      4, ARG_INTEGER},
  {">>", OP_RIGHTSHIFT,     4, ARG_INTEGER},
  {"<=", OP_LE,             5, ARG_NUMBER},
  {">=", OP_GE,             5, ARG_NUMBER},
  {"==", OP_EQ,             6, ARG_NUMBER},
  {"!=", OP_NE,             6, ARG_NUMBER},
  {"eq", OP_SEQ,            7, ARG_STRING},
  {"ne", OP_SNE,            7, ARG_STRING},
  {"&&", OP_LOGICAL_AND,   11, ARG_INTEGER},
  {"||", OP_LOGICAL_OR,    12, ARG_INTEGER},
  {"<<", 2, OP_LEFTSHIFT,      4, ARG_INTEGER},
  {">>", 2, OP_RIGHTSHIFT,     4, ARG_INTEGER},
  {"<=", 2, OP_LE,             5, ARG_NUMBER},
  {">=", 2, OP_GE,             5, ARG_NUMBER},
  {"==", 2, OP_EQ,             6, ARG_NUMBER},
  {"!=", 2, OP_NE,             6, ARG_NUMBER},
  {"eq", 2, OP_SEQ,            7, ARG_STRING},
  {"ne", 2, OP_SNE,            7, ARG_STRING},
  {"&&", 2, OP_LOGICAL_AND,   11, ARG_INTEGER},
  {"||", 2, OP_LOGICAL_OR,    12, ARG_INTEGER},

  {"*",  OP_MULTIPLY,       2, ARG_NUMBER},
  {"/",  OP_DIVIDE,         2, ARG_NUMBER},
  {"%",  OP_MODULUS,        2, ARG_INTEGER},
  {"+",  OP_ADD,            3, ARG_NUMBER},
  {"-",  OP_SUBTRACT,       3, ARG_NUMBER},
  {"<",  OP_LT,             5, ARG_NUMBER},
  {">",  OP_GT,             5, ARG_NUMBER},
  {"&",  OP_BITWISE_AND,    8, ARG_INTEGER},
  {"^",  OP_BITWISE_XOR,    9, ARG_INTEGER},
  {"|",  OP_BITWISE_OR,    10, ARG_INTEGER},
  {"*",  1, OP_MULTIPLY,       2, ARG_NUMBER},
  {"/",  1, OP_DIVIDE,         2, ARG_NUMBER},
  {"%",  1, OP_MODULUS,        2, ARG_INTEGER},
  {"+",  1, OP_ADD,            3, ARG_NUMBER},
  {"-",  1, OP_SUBTRACT,       3, ARG_NUMBER},
  {"<",  1, OP_LT,             5, ARG_NUMBER},
  {">",  1, OP_GT,             5, ARG_NUMBER},
  {"&",  1, OP_BITWISE_AND,    8, ARG_INTEGER},
  {"^",  1, OP_BITWISE_XOR,    9, ARG_INTEGER},
  {"|",  1, OP_BITWISE_OR,    10, ARG_INTEGER},

  {0,0,0}
  {0,0,0,0,0}
};

/*
** The first part of the string (zInput,nInput) contains a number.
** Set *pnVarname to the number of bytes in the numeric string. 
** The first part of the string (zInput,nInput) contains an integer.
** Set *pnVarname to the number of bytes in the numeric string.
*/
static int thNextNumber(
  Th_Interp *interp, 
  const char *zInput, 
  int nInput, 
static int thNextInteger(
  Th_Interp *interp,
  const char *zInput,
  int nInput,
  int *pnLiteral
){
  int i;
  int (*isdigit)(char) = th_isdigit;
  char c;

  if( nInput<2) return TH_ERROR;
  assert(zInput[0]=='0');
  c = zInput[1];
  if( c>='A' && c<='Z' ) c += 'a' - 'A';
  if( c=='x' ){
    isdigit = th_ishexdig;
  }else if( c!='o' && c!='b' ){
    return TH_ERROR;
  }
  for(i=2; i<nInput; i++){
    c = zInput[i];
    if( !isdigit(c) ){
      break;
    }
  }
  *pnLiteral = i;
  return TH_OK;
}

/*
** The first part of the string (zInput,nInput) contains a number.
** Set *pnVarname to the number of bytes in the numeric string.
*/
static int thNextNumber(
  Th_Interp *interp,
  const char *zInput,
  int nInput,
  int *pnLiteral
){
  int i = 0;
  int seenDot = 0;
  for(i=0; i<nInput; i++){
  for(; i<nInput; i++){
    char c = zInput[i];
    if( (seenDot || c!='.') && !th_isdigit(c) ) break;
    if( c=='.' ) seenDot = 1;
  }
  *pnLiteral = i;
  return TH_OK;
}
1815
1816
1817
1818
1819
1820
1821
1822
1823


1824
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2094
2095
2096


2097
2098
2099
2100
2101
2102
2103
2104
2105







-
-
+
+







  if( pExpr->pOp==0 ){
    /* A literal */
    rc = thSubstWord(interp, pExpr->zValue, pExpr->nValue);
  }else{
    int eArgType = 0;           /* Actual type of arguments */

    /* Argument values */
    int iLeft;
    int iRight;
    int iLeft = 0;
    int iRight = 0;
    double fLeft;
    double fRight;

    /* Left and right arguments as strings */
    char *zLeft = 0; int nLeft = 0;
    char *zRight = 0; int nRight = 0;

1846
1847
1848
1849
1850
1851
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1853

1854
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1865

1866
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1869
1870
1871
1872
1873
















1874
1875
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1885
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1888
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1890

1891
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1899
1900
1901
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1904
1905
1906



















1907
1908
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1911
1912
1913
1914
1915
1916
1917
1918
1919
1920


1921
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1923
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1925
1926
1927
2121
2122
2123
2124
2125
2126
2127

2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139

2140
2141
2142
2143
2144
2145
2146


2147
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2151
2152
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2160
2161
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2165
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2168
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2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186










2187
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2200
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2209
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2213
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2215
2216
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2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228







-
+











-
+






-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

















+






-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+














+
+







    if( rc==TH_OK ){
      eArgType = pExpr->pOp->eArgType;
      if( eArgType==ARG_NUMBER ){
        if( (zLeft==0 || TH_OK==Th_ToInt(0, zLeft, nLeft, &iLeft))
         && (zRight==0 || TH_OK==Th_ToInt(0, zRight, nRight, &iRight))
        ){
          eArgType = ARG_INTEGER;
        }else if( 
        }else if(
          (zLeft && TH_OK!=Th_ToDouble(interp, zLeft, nLeft, &fLeft)) ||
          (zRight && TH_OK!=Th_ToDouble(interp, zRight, nRight, &fRight))
        ){
          /* A type error. */
          rc = TH_ERROR;
        }
      }else if( eArgType==ARG_INTEGER ){
        rc = Th_ToInt(interp, zLeft, nLeft, &iLeft);
        if( rc==TH_OK && zRight ){
          rc = Th_ToInt(interp, zRight, nRight, &iRight);
        }
      }  
      }
    }

    if( rc==TH_OK && eArgType==ARG_INTEGER ){
      int iRes = 0;
      switch( pExpr->pOp->eOp ) {
        case OP_MULTIPLY:     iRes = iLeft*iRight;  break;
        case OP_DIVIDE:       iRes = iLeft/iRight;  break;
        case OP_MODULUS:      iRes = iLeft%iRight;  break;
        case OP_DIVIDE:
          if( !iRight ){
            Th_ErrorMessage(interp, "Divide by 0:", zLeft, nLeft);
            rc = TH_ERROR;
            goto finish;
          }
          iRes = iLeft/iRight;
          break;
        case OP_MODULUS:
          if( !iRight ){
            Th_ErrorMessage(interp, "Modulo by 0:", zLeft, nLeft);
            rc = TH_ERROR;
            goto finish;
          }
          iRes = iLeft%iRight;
          break;
        case OP_ADD:          iRes = iLeft+iRight;  break;
        case OP_SUBTRACT:     iRes = iLeft-iRight;  break;
        case OP_LEFTSHIFT:    iRes = iLeft<<iRight; break;
        case OP_RIGHTSHIFT:   iRes = iLeft>>iRight; break;
        case OP_LT:           iRes = iLeft<iRight;  break;
        case OP_GT:           iRes = iLeft>iRight;  break;
        case OP_LE:           iRes = iLeft<=iRight; break;
        case OP_GE:           iRes = iLeft>=iRight; break;
        case OP_EQ:           iRes = iLeft==iRight; break;
        case OP_NE:           iRes = iLeft!=iRight; break;
        case OP_BITWISE_AND:  iRes = iLeft&iRight;  break;
        case OP_BITWISE_XOR:  iRes = iLeft^iRight;  break;
        case OP_BITWISE_OR:   iRes = iLeft|iRight;  break;
        case OP_LOGICAL_AND:  iRes = iLeft&&iRight; break;
        case OP_LOGICAL_OR:   iRes = iLeft||iRight; break;
        case OP_UNARY_MINUS:  iRes = -iLeft;        break;
        case OP_UNARY_PLUS:   iRes = +iLeft;        break;
        case OP_BITWISE_NOT:  iRes = ~iLeft;        break;
        case OP_LOGICAL_NOT:  iRes = !iLeft;        break;
        default: assert(!"Internal error");
      }
      Th_SetResultInt(interp, iRes);
    }else if( rc==TH_OK && eArgType==ARG_NUMBER ){
      switch( pExpr->pOp->eOp ) {
        case OP_MULTIPLY: Th_SetResultDouble(interp, fLeft*fRight);  break;
        case OP_DIVIDE:   Th_SetResultDouble(interp, fLeft/fRight);  break;
        case OP_ADD:      Th_SetResultDouble(interp, fLeft+fRight);  break;
        case OP_SUBTRACT: Th_SetResultDouble(interp, fLeft-fRight);  break;
        case OP_LT:       Th_SetResultInt(interp, fLeft<fRight);  break;
        case OP_GT:       Th_SetResultInt(interp, fLeft>fRight);  break;
        case OP_LE:       Th_SetResultInt(interp, fLeft<=fRight); break;
        case OP_GE:       Th_SetResultInt(interp, fLeft>=fRight); break;
        case OP_EQ:       Th_SetResultInt(interp, fLeft==fRight); break;
        case OP_NE:       Th_SetResultInt(interp, fLeft!=fRight); break;
        case OP_MULTIPLY: Th_SetResultDouble(interp, fLeft*fRight);    break;
        case OP_DIVIDE:
          if( fRight==0.0 ){
            Th_ErrorMessage(interp, "Divide by 0:", zLeft, nLeft);
            rc = TH_ERROR;
            goto finish;
          }
          Th_SetResultDouble(interp, fLeft/fRight);
          break;
        case OP_ADD:         Th_SetResultDouble(interp, fLeft+fRight); break;
        case OP_SUBTRACT:    Th_SetResultDouble(interp, fLeft-fRight); break;
        case OP_LT:          Th_SetResultInt(interp, fLeft<fRight);    break;
        case OP_GT:          Th_SetResultInt(interp, fLeft>fRight);    break;
        case OP_LE:          Th_SetResultInt(interp, fLeft<=fRight);   break;
        case OP_GE:          Th_SetResultInt(interp, fLeft>=fRight);   break;
        case OP_EQ:          Th_SetResultInt(interp, fLeft==fRight);   break;
        case OP_NE:          Th_SetResultInt(interp, fLeft!=fRight);   break;
        case OP_UNARY_MINUS: Th_SetResultDouble(interp, -fLeft);       break;
        case OP_UNARY_PLUS:  Th_SetResultDouble(interp, +fLeft);       break;
        default: assert(!"Internal error");
      }
    }else if( rc==TH_OK ){
      int iEqual = 0;
      assert( eArgType==ARG_STRING );
      if( nRight==nLeft && 0==memcmp(zRight, zLeft, nRight) ){
        iEqual = 1;
      }
      switch( pExpr->pOp->eOp ) {
        case OP_SEQ:       Th_SetResultInt(interp, iEqual); break;
        case OP_SNE:       Th_SetResultInt(interp, !iEqual); break;
        default: assert(!"Internal error");
      }
    }

   finish:

    Th_Free(interp, zLeft);
    Th_Free(interp, zRight);
  }

  return rc;
}
1937
1938
1939
1940
1941
1942
1943
1944

1945
1946
1947
1948
1949
1950
1951
2238
2239
2240
2241
2242
2243
2244

2245
2246
2247
2248
2249
2250
2251
2252







-
+








  assert(nToken>0);
#define ISTERM(x) (apToken[x] && (!apToken[x]->pOp || apToken[x]->pLeft))

  for(jj=0; jj<nToken; jj++){
    if( apToken[jj]->pOp && apToken[jj]->pOp->eOp==OP_OPEN_BRACKET ){
      int nNest = 1;
      int iLeft = jj; 
      int iLeft = jj;

      for(jj++; jj<nToken; jj++){
        Operator *pOp = apToken[jj]->pOp;
        if( pOp && pOp->eOp==OP_OPEN_BRACKET ) nNest++;
        if( pOp && pOp->eOp==OP_CLOSE_BRACKET ) nNest--;
        if( nNest==0 ) break;
      }
1963
1964
1965
1966
1967
1968
1969
1970


1971
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1973
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1975
1976
1977
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1979
1980
1981
1982
1983
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1987

1988
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2264
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2271
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2283
2284
2285
2286



2287
2288
2289
2290
2291
2292
2293
2294







-
+
+














-
-
-
+







      }
    }
  }

  iLeft = 0;
  for(jj=nToken-1; jj>=0; jj--){
    if( apToken[jj] ){
      if( apToken[jj]->pOp && apToken[jj]->pOp->iPrecedence==1 && iLeft>0 ){
      if( apToken[jj]->pOp && apToken[jj]->pOp->iPrecedence==1
       && iLeft>0 && ISTERM(iLeft) ){
        apToken[jj]->pLeft = apToken[iLeft];
        apToken[jj]->pLeft->pParent = apToken[jj];
        apToken[iLeft] = 0;
      }
      iLeft = jj;
    }
  }
  for(i=2; i<=12; i++){
    iLeft = -1;
    for(jj=0; jj<nToken; jj++){
      Expr *pToken = apToken[jj];
      if( apToken[jj] ){
        if( pToken->pOp && !pToken->pLeft && pToken->pOp->iPrecedence==i ){
          int iRight = jj+1;

          iRight = jj+1;
          for(iRight=jj+1; !apToken[iRight] && iRight<nToken; iRight++);
          for(; !apToken[iRight] && iRight<nToken; iRight++);
          if( iRight==nToken || iLeft<0 || !ISTERM(iRight) || !ISTERM(iLeft) ){
            return TH_ERROR;
          }
          pToken->pLeft = apToken[iLeft];
          apToken[iLeft] = 0;
          pToken->pLeft->pParent = pToken;
          pToken->pRight = apToken[iRight];
2011
2012
2013
2014
2015
2016
2017
2018

2019
2020
2021
2022
2023
2024
2025

2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037





2038
2039


2040
2041
2042
2043
2044
2045
2046
2311
2312
2313
2314
2315
2316
2317

2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343


2344
2345
2346
2347
2348
2349
2350
2351
2352







-
+







+












+
+
+
+
+
-
-
+
+







}

/*
** Parse a string containing a TH expression to a list of tokens.
*/
static int exprParse(
  Th_Interp *interp,        /* Interpreter to leave error message in */
  const char *zExpr,       /* Pointer to input string */
  const char *zExpr,        /* Pointer to input string */
  int nExpr,                /* Number of bytes at zExpr */
  Expr ***papToken,         /* OUT: Array of tokens. */
  int *pnToken              /* OUT: Size of token array */
){
  int i;

  int rc = TH_OK;
  int nNest = 0;
  int nToken = 0;
  Expr **apToken = 0;

  for(i=0; rc==TH_OK && i<nExpr; ){
    char c = zExpr[i];
    if( th_isspace(c) ){                                /* White-space     */
      i++;
    }else{
      Expr *pNew = (Expr *)Th_Malloc(interp, sizeof(Expr));
      const char *z = &zExpr[i];

      switch (c) {
        case '0':
          if( thNextInteger(interp, z, nExpr-i, &pNew->nValue)==TH_OK ){
            break;
          }
          /* fall through */
        case '0': case '1': case '2': case '3': case '4':
        case '5': case '6': case '7': case '8': case '9':
        case '1': case '2': case '3': case '4': case '5':
        case '6': case '7': case '8': case '9':
          thNextNumber(interp, z, nExpr-i, &pNew->nValue);
          break;

        case '$':
          thNextVarname(interp, z, nExpr-i, &pNew->nValue);
          break;

2058
2059
2060
2061
2062
2063
2064

2065
2066
2067























2068
2069
2070
2071
2072
2073
2074

2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088

2089
2090
2091
2092
2093

2094
2095

2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106




2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118

2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135

2136
2137
2138
2139
2140
2141
2142
2364
2365
2366
2367
2368
2369
2370
2371



2372
2373
2374
2375
2376
2377
2378
2379
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2384
2385
2386
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2388
2389
2390
2391
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2393
2394
2395
2396
2397
2398
2399


2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413

2414
2415
2416
2417
2418

2419
2420

2421
2422
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2425
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2430
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2432
2433
2434
2435
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2441
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2445
2446
2447

2448
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2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464

2465
2466
2467
2468
2469
2470
2471
2472







+
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+





-
-
+













-
+




-
+

-
+











+
+
+
+











-
+
















-
+







            pNew->nValue = iEnd+1-i;
          }
          break;
        }

        default: {
          int j;
          const char *zOp;
          for(j=0; aOperator[j].zOp; j++){
            int nOp;
            if( aOperator[j].iPrecedence==1 && nToken>0 ){
          for(j=0; (zOp=aOperator[j].zOp); j++){
            int nOp = aOperator[j].nOp;
            int nRemain = nExpr - i;
            int isMatch = 0;
            if( nRemain>=nOp && 0==memcmp(zOp, &zExpr[i], nOp) ){
              isMatch = 1;
            }
            if( isMatch ){
              if( aOperator[j].eOp==OP_CLOSE_BRACKET ){
                nNest--;
              }else if( nRemain>nOp ){
                if( aOperator[j].eOp==OP_OPEN_BRACKET ){
                  nNest++;
                }
              }else{
                /*
                ** This is not really a match because this operator cannot
                ** legally appear at the end of the string.
                */
                isMatch = 0;
              }
            }
            if( nToken>0 && aOperator[j].iPrecedence==1 ){
              Expr *pPrev = apToken[nToken-1];
              if( !pPrev->pOp || pPrev->pOp->eOp==OP_CLOSE_BRACKET ){
                continue;
              }
            }
            nOp = th_strlen((const char *)aOperator[j].zOp);
            if( (nExpr-i)>=nOp && 0==memcmp(aOperator[j].zOp, &zExpr[i], nOp) ){
            if( isMatch ){
              pNew->pOp = &aOperator[j];
              i += nOp;
              break;
            }
          }
        }
      }

      if( pNew->pOp || pNew->nValue ){
        if( pNew->nValue ){
          /* A terminal. Copy the string value. */
          assert( !pNew->pOp );
          pNew->zValue = Th_Malloc(interp, pNew->nValue);
          memcpy(pNew->zValue, z, pNew->nValue);
          th_memcpy(pNew->zValue, z, pNew->nValue);
          i += pNew->nValue;
        }
        if( (nToken%16)==0 ){
          /* Grow the apToken array. */
          Expr **apTokenOld = apToken; 
          Expr **apTokenOld = apToken;
          apToken = Th_Malloc(interp, sizeof(Expr *)*(nToken+16));
          memcpy(apToken, apTokenOld, sizeof(Expr *)*nToken);
          th_memcpy(apToken, apTokenOld, sizeof(Expr *)*nToken);
        }

        /* Put the new token at the end of the apToken array */
        apToken[nToken] = pNew;
        nToken++;
      }else{
        Th_Free(interp, pNew);
        rc = TH_ERROR;
      }
    }
  }

  if( nNest!=0 ){
    rc = TH_ERROR;
  }

  *papToken = apToken;
  *pnToken = nToken;
  return rc;
}

/*
** Evaluate the string (zExpr, nExpr) as a Th expression. Store
** the result in the interpreter interp and return TH_OK if
** successful. If an error occurs, store an error message in
** the interpreter result and return an error code.
*/ 
*/
int Th_Expr(Th_Interp *interp, const char *zExpr, int nExpr){
  int rc;                           /* Return Code */
  int i;                            /* Loop counter */

  int nToken = 0;
  Expr **apToken = 0;

  if( nExpr<0 ){
    nExpr = th_strlen(zExpr);
  }

  /* Parse the expression to a list of tokens. */
  rc = exprParse(interp, zExpr, nExpr, &apToken, &nToken);

  /* If the parsing was successful, create an expression tree from
  ** the parsed list of tokens. If successful, apToken[0] is set
  ** to point to the root of the expression tree. 
  ** to point to the root of the expression tree.
  */
  if( rc==TH_OK ){
    rc = exprMakeTree(interp, apToken, nToken);
  }

  if( rc!=TH_OK ){
    Th_ErrorMessage(interp, "syntax error in expression: \"", zExpr, nExpr);
2166
2167
2168
2169
2170
2171
2172
2173


2174
2175
2176

2177
2178

2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193

2194
2195

2196

2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210

2211
2212
2213

2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224

2225
2226
2227
2228
2229
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2231
2496
2497
2498
2499
2500
2501
2502

2503
2504
2505
2506

2507
2508

2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523

2524
2525

2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541

2542
2543
2544

2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555

2556
2557
2558
2559
2560
2561
2562
2563







-
+
+


-
+

-
+














-
+

-
+

+













-
+


-
+










-
+







  return p;
}

/*
** Iterate through all values currently stored in the hash table. Invoke
** the callback function xCallback for each entry. The second argument
** passed to xCallback is a copy of the fourth argument passed to this
** function.
** function.  The return value from the callback function xCallback is
** ignored.
*/
void Th_HashIterate(
  Th_Interp *interp, 
  Th_Interp *interp,
  Th_Hash *pHash,
  void (*xCallback)(Th_HashEntry *pEntry, void *pContext),
  int (*xCallback)(Th_HashEntry *pEntry, void *pContext),
  void *pContext
){
  int i;
  for(i=0; i<TH_HASHSIZE; i++){
    Th_HashEntry *pEntry;
    Th_HashEntry *pNext;
    for(pEntry=pHash->a[i]; pEntry; pEntry=pNext){
      pNext = pEntry->pNext;
      xCallback(pEntry, pContext);
    }
  }
}

/*
** Helper function for Th_HashDelete().
** Helper function for Th_HashDelete().  Always returns non-zero.
*/
static void xFreeHashEntry(Th_HashEntry *pEntry, void *pContext){
static int xFreeHashEntry(Th_HashEntry *pEntry, void *pContext){
  Th_Free((Th_Interp *)pContext, (void *)pEntry);
  return 1;
}

/*
** Free a hash-table previously allocated by Th_HashNew().
*/
void Th_HashDelete(Th_Interp *interp, Th_Hash *pHash){
  if( pHash ){
    Th_HashIterate(interp, pHash, xFreeHashEntry, (void *)interp);
    Th_Free(interp, pHash);
  }
}

/*
** This function is used to insert or delete hash table items, or to 
** This function is used to insert or delete hash table items, or to
** query a hash table for an existing item.
**
** If parameter op is less than zero, then the hash-table element 
** If parameter op is less than zero, then the hash-table element
** identified by (zKey, nKey) is removed from the hash-table if it
** exists. NULL is returned.
**
** Otherwise, if the hash-table contains an item with key (zKey, nKey),
** a pointer to the associated Th_HashEntry is returned. If parameter
** op is greater than zero, then a new entry is added if one cannot
** be found. If op is zero, then NULL is returned if the item is
** not already present in the hash-table.
*/
Th_HashEntry *Th_HashFind(
  Th_Interp *interp, 
  Th_Interp *interp,
  Th_Hash *pHash,
  const char *zKey,
  int nKey,
  int op                      /* -ve = delete, 0 = find, +ve = insert */
){
  unsigned int iKey = 0;
  int i;
2253
2254
2255
2256
2257
2258
2259
2260

2261
2262
2263
2264
2265
2266
2267
2585
2586
2587
2588
2589
2590
2591

2592
2593
2594
2595
2596
2597
2598
2599







-
+







    pRet = 0;
  }

  if( op>0 && !pRet ){
    pRet = (Th_HashEntry *)Th_Malloc(interp, sizeof(Th_HashEntry) + nKey);
    pRet->zKey = (char *)&pRet[1];
    pRet->nKey = nKey;
    memcpy(pRet->zKey, zKey, nKey);
    th_memcpy(pRet->zKey, zKey, nKey);
    pRet->pNext = pHash->a[iKey];
    pHash->a[iKey] = pRet;
  }

  return pRet;
}

2285
2286
2287
2288
2289
2290
2291
2292


2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306


2307
2308

2309
2310
2311
2312
2313
2314
2315
2617
2618
2619
2620
2621
2622
2623

2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637


2638
2639
2640

2641
2642
2643
2644
2645
2646
2647
2648







-
+
+












-
-
+
+

-
+







**     '\n'   0x0A
**     '\v'   0x0B
**     '\f'   0x0C
**     '\r'   0x0D
**
** Whitespace characters have the 0x01 flag set. Decimal digits have the
** 0x2 flag set. Single byte printable characters have the 0x4 flag set.
** Alphabet characters have the 0x8 bit set. 
** Alphabet characters have the 0x8 bit set. Hexadecimal digits have the
** 0x20 flag set.
**
** The special list characters have the 0x10 flag set
**
**    { } [ ] \ ; ' "
**
**    " 0x22
**
*/
static unsigned char aCharProp[256] = {
  0,  0,  0,  0,  0,  0,  0,  0,     0,  1,  1,  1,  1,  1,  0,  0,   /* 0x0. */
  0,  0,  1,  1,  0,  0,  0,  0,     0,  0,  0,  0,  0,  0,  0,  0,   /* 0x1. */
  5,  4, 20,  4,  4,  4,  4,  4,     4,  4,  4,  4,  4,  4,  4,  4,   /* 0x2. */
  6,  6,  6,  6,  6,  6,  6,  6,     6,  6,  4, 20,  4,  4,  4,  4,   /* 0x3. */
  4, 12, 12, 12, 12, 12, 12, 12,    12, 12, 12, 12, 12, 12, 12, 12,   /* 0x4. */
 38, 38, 38, 38, 38, 38, 38, 38,    38, 38,  4, 20,  4,  4,  4,  4,   /* 0x3. */
  4, 44, 44, 44, 44, 44, 44, 12,    12, 12, 12, 12, 12, 12, 12, 12,   /* 0x4. */
 12, 12, 12, 12, 12, 12, 12, 12,    12, 12, 12, 20, 20, 20,  4,  4,   /* 0x5. */
  4, 12, 12, 12, 12, 12, 12, 12,    12, 12, 12, 12, 12, 12, 12, 12,   /* 0x6. */
  4, 44, 44, 44, 44, 44, 44, 12,    12, 12, 12, 12, 12, 12, 12, 12,   /* 0x6. */
 12, 12, 12, 12, 12, 12, 12, 12,    12, 12, 12, 20,  4, 20,  4,  4,   /* 0x7. */

  0,  0,  0,  0,  0,  0,  0,  0,     0,  0,  0,  0,  0,  0,  0,  0,   /* 0x8. */
  0,  0,  0,  0,  0,  0,  0,  0,     0,  0,  0,  0,  0,  0,  0,  0,   /* 0x9. */
  0,  0,  0,  0,  0,  0,  0,  0,     0,  0,  0,  0,  0,  0,  0,  0,   /* 0xA. */
  0,  0,  0,  0,  0,  0,  0,  0,     0,  0,  0,  0,  0,  0,  0,  0,   /* 0xB. */
  0,  0,  0,  0,  0,  0,  0,  0,     0,  0,  0,  0,  0,  0,  0,  0,   /* 0xC. */
2329
2330
2331
2332
2333
2334
2335












2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684

2685
2686
2687
2688
2689
2690
2691







+
+
+
+
+
+
+
+
+
+
+
+




-







}
int th_isspecial(char c){
  return (aCharProp[(unsigned char)c] & 0x11);
}
int th_isalnum(char c){
  return (aCharProp[(unsigned char)c] & 0x0A);
}
int th_isalpha(char c){
  return (aCharProp[(unsigned char)c] & 0x08);
}
int th_ishexdig(char c){
  return (aCharProp[(unsigned char)c] & 0x20);
}
int th_isoctdig(char c){
  return ((c|7) == '7');
}
int th_isbindig(char c){
  return ((c|1) == '1');
}

#ifndef LONGDOUBLE_TYPE
# define LONGDOUBLE_TYPE long double
#endif
typedef char u8;


/*
** Return TRUE if z is a pure numeric string.  Return FALSE if the
** string contains any character which is not part of a number. If
** the string is numeric and contains the '.' character, set *realnum
** to TRUE (otherwise FALSE).
2437
2438
2439
2440
2441
2442
2443
2444

2445
2446
2447


2448
2449
2450
2451
2452


2453
2454
2455
2456
2457
2458

2459
2460















2461

2462

2463
2464
2465







2466

2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479

2480
2481
2482


2483
2484
2485
2486
2487
2488



2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505

2506
2507
2508
2509
2510
2511

2512
2513
2514
2515
2516



2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534


2535
2536
2537

2538
2539
2540
2541
2542
2543
2544
2545
2546

2547
2548
2549
2550
2551
2552

2553
2554
2555

2556
2557
2558
2559
2560
2561
2562
2781
2782
2783
2784
2785
2786
2787

2788
2789


2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803

2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823

2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834

2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847

2848
2849


2850
2851
2852
2853
2854



2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880

2881
2882
2883



2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902


2903
2904
2905
2906

2907
2908
2909
2910
2911
2912
2913
2914
2915

2916
2917
2918
2919
2920
2921

2922
2923
2924

2925
2926
2927
2928
2929
2930
2931
2932







-
+

-
-
+
+





+
+





-
+


+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

+
-
+



+
+
+
+
+
+
+
-
+












-
+

-
-
+
+



-
-
-
+
+
+

















+





-
+


-
-
-
+
+
+
















-
-
+
+


-
+








-
+





-
+


-
+







  }
  *pResult = sign<0 ? -v1 : v1;
  return z - zBegin;
}

/*
** Try to convert the string passed as arguments (z, n) to an integer.
** If successful, store the result in *piOut and return TH_OK. 
** If successful, store the result in *piOut and return TH_OK.
**
** If the string cannot be converted to an integer, return TH_ERROR. 
** If the interp argument is not NULL, leave an error message in the 
** If the string cannot be converted to an integer, return TH_ERROR.
** If the interp argument is not NULL, leave an error message in the
** interpreter result too.
*/
int Th_ToInt(Th_Interp *interp, const char *z, int n, int *piOut){
  int i = 0;
  int iOut = 0;
  int base = 10;
  int (*isdigit)(char) = th_isdigit;

  if( n<0 ){
    n = th_strlen(z);
  }

  if( n>0 && (z[0]=='-' || z[0]=='+') ){
  if( n>1 && (z[0]=='-' || z[0]=='+') ){
    i = 1;
  }
  if( (n-i)>2 && z[i]=='0' ){
    if( z[i+1]=='x' || z[i+1]=='X' ){
      i += 2;
      base = 16;
      isdigit = th_ishexdig;
    }else if( z[i+1]=='o' || z[i+1]=='O' ){
      i += 2;
      base = 8;
      isdigit = th_isoctdig;
    }else if( z[i+1]=='b' || z[i+1]=='B' ){
      i += 2;
      base = 2;
      isdigit = th_isbindig;
    }
  }
  for(; i<n; i++){
    char c = z[i];
    if( !th_isdigit(z[i]) ){
    if( !isdigit(c) ){
      Th_ErrorMessage(interp, "expected integer, got: \"", z, n);
      return TH_ERROR;
    }
    if( c>='a' ){
      c -= 'a'-10;
    }else if( c>='A' ){
      c -= 'A'-10;
    }else{
      c -= '0';
    }
    iOut = iOut * 10 + (z[i] - 48);
    iOut = iOut * base + c;
  }

  if( n>0 && z[0]=='-' ){
    iOut *= -1;
  }

  *piOut = iOut;
  return TH_OK;
}

/*
** Try to convert the string passed as arguments (z, n) to a double.
** If successful, store the result in *pfOut and return TH_OK. 
** If successful, store the result in *pfOut and return TH_OK.
**
** If the string cannot be converted to a double, return TH_ERROR. 
** If the interp argument is not NULL, leave an error message in the 
** If the string cannot be converted to a double, return TH_ERROR.
** If the interp argument is not NULL, leave an error message in the
** interpreter result too.
*/
int Th_ToDouble(
  Th_Interp *interp, 
  const char *z, 
  int n, 
  Th_Interp *interp,
  const char *z,
  int n,
  double *pfOut
){
  if( !sqlite3IsNumber((const char *)z, 0) ){
    Th_ErrorMessage(interp, "expected number, got: \"", z, n);
    return TH_ERROR;
  }

  sqlite3AtoF((const char *)z, pfOut);
  return TH_OK;
}

/*
** Set the result of the interpreter to the th1 representation of
** the integer iVal and return TH_OK.
*/
int Th_SetResultInt(Th_Interp *interp, int iVal){
  int isNegative = 0;
  unsigned int uVal = iVal;
  char zBuf[32];
  char *z = &zBuf[32];

  if( iVal<0 ){
    isNegative = 1;
    iVal = iVal * -1;
    uVal = iVal * -1;
  }
  *(--z) = '\0';
  *(--z) = (char)(48+(iVal%10));
  while( (iVal = (iVal/10))>0 ){
    *(--z) = (char)(48+(iVal%10));
  *(--z) = (char)(48+(uVal%10));
  while( (uVal = (uVal/10))>0 ){
    *(--z) = (char)(48+(uVal%10));
    assert(z>zBuf);
  }
  if( isNegative ){
    *(--z) = '-';
  }

  return Th_SetResult(interp, z, -1);
}

/*
** Set the result of the interpreter to the th1 representation of
** the double fVal and return TH_OK.
*/
int Th_SetResultDouble(Th_Interp *interp, double fVal){
  int i;                /* Iterator variable */
  double v = fVal;      /* Input value */
  char zBuf[128];      /* Output buffer */
  char *z = zBuf;      /* Output cursor */
  char zBuf[128];       /* Output buffer */
  char *z = zBuf;       /* Output cursor */
  int iDot = 0;         /* Digit after which to place decimal point */
  int iExp = 0;         /* Exponent (NN in eNN) */
  const char *zExp;    /* String representation of iExp */
  const char *zExp;     /* String representation of iExp */

  /* Precision: */
  #define INSIGNIFICANT 0.000000000001
  #define ROUNDER       0.0000000000005
  double insignificant = INSIGNIFICANT;

  /* If the real value is negative, write a '-' character to the
   * output and transform v to the corresponding positive number.
   */ 
   */
  if( v<0.0 ){
    *z++ = '-';
    v *= -1.0;
  }

  /* Normalize v to a value between 1.0 and 10.0. Integer 
  /* Normalize v to a value between 1.0 and 10.0. Integer
   * variable iExp is set to the exponent. i.e the original
   * value is (v * 10^iExp) (or the negative thereof).
   */ 
   */
  if( v>0.0 ){
    while( (v+ROUNDER)>=10.0 ) { iExp++; v *= 0.1; }
    while( (v+ROUNDER)<1.0 )   { iExp--; v *= 10.0; }
  }
  v += ROUNDER;

  /* For a small (<12) positive exponent, move the decimal point
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    }
  }

  *z = '\0';
  return Th_SetResult(interp, zBuf, -1);
}

/*
** Appends all currently registered command names to the specified list
** and returns TH_OK upon success.  Any other return value indicates an
** error.
*/
int Th_ListAppendCommands(
  Th_Interp *interp,      /* Interpreter context */
  char **pzList,          /* OUT: List of command names */
  int *pnList             /* OUT: Number of command names */
){
  Th_InterpAndList *p = (Th_InterpAndList *)Th_Malloc(
    interp, sizeof(Th_InterpAndList)
  );
  p->interp = interp;
  p->pzList = pzList;
  p->pnList = pnList;
  Th_HashIterate(interp, interp->paCmd, thListAppendHashKey, p);
  Th_Free(interp, p);
  return TH_OK;
}

/*
** Appends all variable names for the current frame to the specified list
** and returns TH_OK upon success.  Any other return value indicates an
** error.  If the current frame cannot be obtained, TH_ERROR is returned.
*/
int Th_ListAppendVariables(
  Th_Interp *interp,      /* Interpreter context */
  char **pzList,          /* OUT: List of variable names */
  int *pnList             /* OUT: Number of variable names */
){
  Th_Frame *pFrame = getFrame(interp, 0);
  if( pFrame ){
    Th_InterpAndList *p = (Th_InterpAndList *)Th_Malloc(
      interp, sizeof(Th_InterpAndList)
    );
    p->interp = interp;
    p->pzList = pzList;
    p->pnList = pnList;
    Th_HashIterate(interp, pFrame->paVar, thListAppendHashKey, p);
    Th_Free(interp, p);
    return TH_OK;
  }else{
    return TH_ERROR;
  }
}

/*
** Appends all array element names for the specified array variable to the
** specified list and returns TH_OK upon success.  Any other return value
** indicates an error.
*/
int Th_ListAppendArray(
  Th_Interp *interp,      /* Interpreter context */
  const char *zVar,       /* Pointer to variable name */
  int nVar,               /* Number of bytes at nVar */
  char **pzList,          /* OUT: List of array element names */
  int *pnList             /* OUT: Number of array element names */
){
  Th_Variable *pValue = thFindValue(interp, zVar, nVar, 0, 1, 1, 0);
  if( pValue && !pValue->zData && pValue->pHash ){
    Th_InterpAndList *p = (Th_InterpAndList *)Th_Malloc(
      interp, sizeof(Th_InterpAndList)
    );
    p->interp = interp;
    p->pzList = pzList;
    p->pnList = pnList;
    Th_HashIterate(interp, pValue->pHash, thListAppendHashKey, p);
    Th_Free(interp, p);
  }else{
    *pzList = 0;
    *pnList = 0;
  }
  return TH_OK;
}
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/* This header file defines the external interface to the custom Scripting
** Language (TH) interpreter.  TH is very similar to TCL but is not an
** Language (TH) interpreter.  TH is very similar to Tcl but is not an
** exact clone.
*/

/*
** Before creating an interpreter, the application must allocate and
** populate an instance of the following structure. It must remain valid
** for the lifetime of the interpreter.
*/
typedef struct Th_Vtab Th_Vtab;
struct Th_Vtab {
  void *(*xMalloc)(unsigned int);
  void (*xFree)(void *);
};
typedef struct Th_Vtab Th_Vtab;

/*
** Opaque handle for interpeter.
*/
typedef struct Th_Interp Th_Interp;

/* 
** Create and delete interpreters. 
/*
** Create and delete interpreters.
*/
Th_Interp * Th_CreateInterp(Th_Vtab *pVtab);
Th_Interp * Th_CreateInterp(Th_Vtab *);
void Th_DeleteInterp(Th_Interp *);

/* 
/*
** Evaluate an TH program in the stack frame identified by parameter
** iFrame, according to the following rules:
**
**   * If iFrame is 0, this means the current frame.
**
**   * If iFrame is negative, then the nth frame up the stack, where n is 
**   * If iFrame is negative, then the nth frame up the stack, where n is
**     the absolute value of iFrame. A value of -1 means the calling
**     procedure.
**
**   * If iFrame is +ve, then the nth frame from the bottom of the stack.
**     An iFrame value of 1 means the toplevel (global) frame.
*/
int Th_Eval(Th_Interp *interp, int iFrame, const char *zProg, int nProg);

/*
** Evaluate a TH expression. The result is stored in the 
** Evaluate a TH expression. The result is stored in the
** interpreter result.
*/
int Th_Expr(Th_Interp *interp, const char *, int);

/* 
/*
** Access TH variables in the current stack frame. If the variable name
** begins with "::", the lookup is in the top level (global) frame. 
** begins with "::", the lookup is in the top level (global) frame.
*/
int Th_ExistsVar(Th_Interp *, const char *, int);
int Th_ExistsArrayVar(Th_Interp *, const char *, int);
int Th_GetVar(Th_Interp *, const char *, int);
int Th_SetVar(Th_Interp *, const char *, int, const char *, int);
int Th_LinkVar(Th_Interp *, const char *, int, int, const char *, int);
int Th_UnsetVar(Th_Interp *, const char *, int);

/*
** If interp has a variable with the given name, its value is returned
** and its length is returned via *nOut if nOut is not NULL.  If
** interp has no such var then NULL is returned without setting any
** error state and *nOut, if not NULL, is set to 0. The returned value
** is owned by the interpreter and may be invalidated the next time
** the interpreter is modified.
**
** zVarName must be NUL-terminated.
*/
const char * Th_MaybeGetVar(Th_Interp *interp, const char *zVarName,
                            int *nOut);

typedef int (*Th_CommandProc)(Th_Interp *, void *, int, const char **, int *);

/* 
** Register new commands. 
/*
** Register new commands.
*/
int Th_CreateCommand(
  Th_Interp *interp, 
  const char *zName, 
  Th_Interp *interp,
  const char *zName,
  /* int (*xProc)(Th_Interp *, void *, int, const char **, int *), */
  Th_CommandProc xProc,
  void *pContext,
  void (*xDel)(Th_Interp *, void *)
);

/* 
/*
** Delete or rename commands.
*/
int Th_RenameCommand(Th_Interp *, const char *, int, const char *, int);

/* 
** Push a new stack frame (local variable context) onto the interpreter 
** stack, call the function supplied as parameter xCall with the two 
** context arguments, 
/*
** Push a new stack frame (local variable context) onto the interpreter
** stack, call the function supplied as parameter xCall with the two
** context arguments,
**
**   xCall(interp, pContext1, pContext2)
**
** , then pop the frame off of the interpreter stack. The value returned
** by the xCall() function is returned as the result of this function.
**
** This is intended for use by the implementation of commands such as
** those created by [proc].
*/
int Th_InFrame(Th_Interp *interp,
  int (*xCall)(Th_Interp *, void *pContext1, void *pContext2),
  void *pContext1,
  void *pContext2
);

/* 
/*
** Valid return codes for xProc callbacks.
*/
#define TH_OK       0
#define TH_ERROR    1
#define TH_BREAK    2
#define TH_RETURN   3
#define TH_CONTINUE 4
#define TH_RETURN2  5

/* 
** Set and get the interpreter result. 
/*
** Set and get the interpreter result.
*/
int Th_SetResult(Th_Interp *, const char *, int);
const char *Th_GetResult(Th_Interp *, int *);
char *Th_TakeResult(Th_Interp *, int *);

/*
** Set an error message as the interpreter result. This also
** sets the global stack-trace variable $::th_stack_trace.
*/
int Th_ErrorMessage(Th_Interp *, const char *, const char *, int);

/* 
/*
** Access the memory management functions associated with the specified
** interpreter.
*/
#if defined(TH_MEMDEBUG)
void *Th_Malloc(Th_Interp *, int);
void Th_Free(Th_Interp *, void *);
void *Th_DbgMalloc(Th_Interp *, int);
void Th_DbgFree(Th_Interp *, void *);
#endif

void *fossil_malloc_zero(size_t);
void *fossil_realloc(void *, size_t);
void fossil_free(void *);

#define Th_SysMalloc(I,N)     fossil_malloc_zero((N))
#define Th_SysRealloc(I,P,N)  fossil_realloc((P),(N))
#define Th_SysFree(I,P)       fossil_free((P))

#if defined(TH_MEMDEBUG)
#  define Th_Malloc(I,N)      Th_DbgMalloc((I),(N))
#  define Th_Free(I,P)        Th_DbgFree((I),(P))
#else
#  define Th_Malloc(I,N)      Th_SysMalloc((I),(N))
#  define Th_Realloc(I,P,N)   Th_SysRealloc((I),(P),(N))
#  define Th_Free(I,P)        Th_SysFree((I),(P))
#endif

/* 
/*
** Functions for handling TH lists.
*/
int Th_ListAppend(Th_Interp *, char **, int *, const char *, int);
int Th_SplitList(Th_Interp *, const char *, int, char ***, int **, int *);

int Th_StringAppend(Th_Interp *, char **, int *, const char *, int);

/* 
/*
** Functions for handling numbers and pointers.
*/
int Th_ToInt(Th_Interp *, const char *, int, int *);
int Th_ToDouble(Th_Interp *, const char *, int, double *);
int Th_SetResultInt(Th_Interp *, int);
int Th_SetResultDouble(Th_Interp *, double);

/*
** Functions for handling command and variable introspection.
*/
int Th_ListAppendCommands(Th_Interp *, char **, int *);
int Th_ListAppendVariables(Th_Interp *, char **, int *);
int Th_ListAppendArray(Th_Interp *, const char *, int, char **, int *);

/*
** Drop in replacements for the corresponding standard library functions.
*/
int th_strlen(const char *);
int th_isdigit(char);
int th_isspace(char);
int th_isalnum(char);
int th_isalpha(char);
int th_isspecial(char);
int th_ishexdig(char);
int th_isoctdig(char);
int th_isbindig(char);
char *th_strdup(Th_Interp *interp, const char *z, int n);

/*
** Interfaces to register the language extensions.
*/
int th_register_language(Th_Interp *interp);            /* th_lang.c */
int th_register_sqlite(Th_Interp *interp);              /* th_sqlite.c */
int th_register_vfs(Th_Interp *interp);                 /* th_vfs.c */
int th_register_testvfs(Th_Interp *interp);             /* th_testvfs.c */

#ifdef FOSSIL_ENABLE_TCL
/*
** Interfaces to the full Tcl core library from "th_tcl.c".
*/
int th_register_tcl(Th_Interp *, void *);
int unloadTcl(Th_Interp *, void *);
int evaluateTclWithEvents(Th_Interp *,void *,const char *,int,int,int,int);
#endif

/*
** General purpose hash table from th_lang.c.
*/
typedef struct Th_Hash      Th_Hash;
typedef struct Th_HashEntry Th_HashEntry;
struct Th_HashEntry {
  void *pData;
  char *zKey;
  int nKey;
  Th_HashEntry *pNext;     /* Internal use only */
};
Th_Hash *Th_HashNew(Th_Interp *);
void Th_HashDelete(Th_Interp *, Th_Hash *);
void Th_HashIterate(Th_Interp*,Th_Hash*,void (*x)(Th_HashEntry*, void*),void*);
void Th_HashIterate(Th_Interp*,Th_Hash*,int (*x)(Th_HashEntry*, void*),void*);
Th_HashEntry *Th_HashFind(Th_Interp*, Th_Hash*, const char*, int, int);

/*
** Useful functions from th_lang.c.
*/
int Th_WrongNumArgs(Th_Interp *interp, const char *zMsg);

typedef struct Th_SubCommand {char *zName; Th_CommandProc xProc;} Th_SubCommand;
int Th_CallSubCommand(Th_Interp*,void*,int,const char**,int*,Th_SubCommand*);
typedef struct Th_SubCommand {const char *zName; Th_CommandProc xProc;} Th_SubCommand;
int Th_CallSubCommand(Th_Interp*,void*,int,const char**,int*,const Th_SubCommand*);
Changes to src/th_lang.c.
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/*
** This file contains the implementation of all of the TH language 
** built-in commands. 
** This file contains the implementation of all of the TH language
** built-in commands.
**
** All built-in commands are implemented using the public interface 
** declared in th.h, so this file serves as both a part of the language 
** All built-in commands are implemented using the public interface
** declared in th.h, so this file serves as both a part of the language
** implementation and an example of how to extend the language with
** new commands.
*/

#include "config.h"
#include "th.h"
#include <string.h>
#include <assert.h>

int Th_WrongNumArgs(Th_Interp *interp, const char *zMsg){
  Th_ErrorMessage(interp, "wrong # args: should be \"", zMsg, -1);
  return TH_ERROR;
}

/*
** Syntax: 
** Syntax:
**
**   catch script ?varname?
*/
static int catch_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int rc;

  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "catch script ?varname?");
  }

  rc = Th_Eval(interp, 0, argv[1], -1);
  if( argc==3 ){
    int nResult;
    const char *zResult = Th_GetResult(interp, &nResult);
    Th_SetVar(interp, argv[2], argl[2], zResult, nResult);
  }

  Th_SetResultInt(interp, rc);
  return TH_OK;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   if expr1 body1 ?elseif expr2 body2? ? ?else? bodyN?
*/
static int if_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int rc = TH_OK;

  int iCond;           /* Result of evaluating expression */
  int i;

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  return rc;

wrong_args:
  return Th_WrongNumArgs(interp, "if ...");
}

/*
** TH Syntax: 
** TH Syntax:
**
**   expr expr
*/
static int expr_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "expr expression");
  }

  return Th_Expr(interp, argv[1], argl[1]);
}

/*
** Evaluate the th1 script (zBody, nBody) in the local stack frame. 
** Evaluate the th1 script (zBody, nBody) in the local stack frame.
** Return the result of the evaluation, except if the result
** is TH_CONTINUE, return TH_OK instead.
*/
static int eval_loopbody(Th_Interp *interp, const char *zBody, int nBody){
  int rc = Th_Eval(interp, 0, zBody, nBody);
  if( rc==TH_CONTINUE ){
    rc = TH_OK;
  }
  return rc;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   for init condition incr script
*/
static int for_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  int iCond;

  if( argc!=5 ){
    return Th_WrongNumArgs(interp, "for init condition incr script");
  }

  /* Evaluate the 'init' script */
  rc = Th_Eval(interp, 0, argv[1], -1);

  while( rc==TH_OK 
  while( rc==TH_OK
     && TH_OK==(rc = Th_Expr(interp, argv[2], -1))
     && TH_OK==(rc = Th_ToInt(interp, Th_GetResult(interp, 0), -1, &iCond))
     && iCond
     && TH_OK==(rc = eval_loopbody(interp, argv[4], argl[4]))
  ){
    rc = Th_Eval(interp, 0, argv[3], -1);
  }

  if( rc==TH_BREAK ) rc = TH_OK;
  return rc;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   foreach VARLIST LIST SCRIPT
*/
static int foreach_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  char **azVar = 0;
  int *anVar;
  int nVar;
  char **azValue = 0;
  int *anValue;
  int nValue;
  int ii, jj;

  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "foreach varlist list script");
  }
  rc = Th_SplitList(interp, argv[1], argl[1], &azVar, &anVar, &nVar);
  if( rc ) return rc;
  rc = Th_SplitList(interp, argv[2], argl[2], &azValue, &anValue, &nValue);
  for(ii=0; rc==TH_OK && ii<=nValue-nVar; ii+=nVar){
    for(jj=0; jj<nVar; jj++){
      Th_SetVar(interp, azVar[jj], anVar[jj], azValue[ii+jj], anValue[ii+jj]);
    }
    rc = eval_loopbody(interp, argv[3], argl[3]);
  }
  if( rc==TH_BREAK ) rc = TH_OK;
  Th_Free(interp, azVar);
  Th_Free(interp, azValue);
  return rc;
}


/*
** TH Syntax:
**
**   list ?arg1 ?arg2? ...?
*/
static int list_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  char *zList = 0;
  int nList = 0;
  int i;

  for(i=1; i<argc; i++){
    Th_ListAppend(interp, &zList, &nList, argv[i], argl[i]);
  }
 

  Th_SetResult(interp, zList, nList);
  Th_Free(interp, zList);

  return TH_OK;
}

/*
** TH Syntax: 
** TH Syntax:
**
**    lappend var ?arg1? ?arg2? ...?
**
** Interpret the content of variable var as a list.  Create var if it
** does not already exist.  Append each argument as a new list element.
*/
static int lappend_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  char *zList = 0;
  int nList = 0;
  int i, rc;

  if( argc<2 ){
    return Th_WrongNumArgs(interp, "lappend var ...");
  }
  rc = Th_GetVar(interp, argv[1], argl[1]);
  if( rc==TH_OK ){
    zList = Th_TakeResult(interp, &nList);
  }

  for(i=2; i<argc; i++){
    Th_ListAppend(interp, &zList, &nList, argv[i], argl[i]);
  }

  Th_SetVar(interp, argv[1], argl[1], zList, nList);
  Th_SetResult(interp, zList, nList);
  Th_Free(interp, zList);

  return TH_OK;
}


/*
** TH Syntax:
**
**   lindex list index
*/
static int lindex_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int iElem;
  int rc;

  char **azElem;
  int *anElem;
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    Th_Free(interp, azElem);
  }

  return rc;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   llength list
*/
static int llength_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int nElem;
  int rc;

  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "llength list");
  }

  rc = Th_SplitList(interp, argv[1], argl[1], 0, 0, &nElem);
  if( rc==TH_OK ){
    Th_SetResultInt(interp, nElem);
  }

  return rc;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   lsearch list string
*/
static int lsearch_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  char **azElem;
  int *anElem;
  int nCount;
  int i;

  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "lsearch list string");
  }

  rc = Th_SplitList(interp, argv[1], argl[1], &azElem, &anElem, &nCount);
  if( rc==TH_OK ){
    Th_SetResultInt(interp, -1);
    for(i=0; i<nCount; i++){
      if( anElem[i]==argl[2] && 0==memcmp(azElem[i], argv[2], argl[2]) ){
        Th_SetResultInt(interp, i);
        break;
      }
    }
    Th_Free(interp, azElem);
  }

  return rc;
}

/*
** TH Syntax:
**
**   set varname ?value?
*/
static int set_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "set varname ?value?");
  }

  if( argc==3 ){
    Th_SetVar(interp, argv[1], argl[1], argv[2], argl[2]);
  }
  return Th_GetVar(interp, argv[1], argl[1]);
}

/*
** When a new command is created using the built-in [proc] command, an
** instance of the following structure is allocated and populated. A 
** pointer to the structure is passed as the context (second) argument 
** instance of the following structure is allocated and populated. A
** pointer to the structure is passed as the context (second) argument
** to function proc_call1() when the new command is executed.
*/
typedef struct ProcDefn ProcDefn;
struct ProcDefn {
  int nParam;                /* Number of formal (non "args") parameters */
  char **azParam;           /* Parameter names */
  char **azParam;            /* Parameter names */
  int *anParam;              /* Lengths of parameter names */
  char **azDefault;         /* Default values */
  char **azDefault;          /* Default values */
  int *anDefault;            /* Lengths of default values */
  int hasArgs;               /* True if there is an "args" parameter */
  char *zProgram;           /* Body of proc */
  char *zProgram;            /* Body of proc */
  int nProgram;              /* Number of bytes at zProgram */
  char *zUsage;             /* Usage message */
  char *zUsage;              /* Usage message */
  int nUsage;                /* Number of bytes at zUsage */
};

/* This structure is used to temporarily store arguments passed to an 
** invocation of a command created using [proc]. A pointer to an 
/* This structure is used to temporarily store arguments passed to an
** invocation of a command created using [proc]. A pointer to an
** instance is passed as the second argument to the proc_call2() function.
*/
typedef struct ProcArgs ProcArgs;
struct ProcArgs {
  int argc;
  const char **argv;
  int *argl;
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  int i;
  ProcDefn *p = (ProcDefn *)pContext1;
  ProcArgs *pArgs = (ProcArgs *)pContext2;

  /* Check if there are the right number of arguments. If there are
  ** not, generate a usage message for the command.
  */
  if( (pArgs->argc>(p->nParam+1) && !p->hasArgs) 
  if( (pArgs->argc>(p->nParam+1) && !p->hasArgs)
   || (pArgs->argc<=(p->nParam) && !p->azDefault[pArgs->argc-1])
  ){
    char *zUsage = 0;
    int nUsage = 0;
    Th_StringAppend(interp, &zUsage, &nUsage, pArgs->argv[0], pArgs->argl[0]);
    Th_StringAppend(interp, &zUsage, &nUsage, p->zUsage, p->nUsage);
    Th_StringAppend(interp, &zUsage, &nUsage, (const char *)"", 1);
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  if( p->hasArgs ){
    char *zArgs = 0;
    int nArgs = 0;
    for(i=p->nParam+1; i<pArgs->argc; i++){
      Th_ListAppend(interp, &zArgs, &nArgs, pArgs->argv[i], pArgs->argl[i]);
    }
    Th_SetVar(interp, (const char *)"args", -1, zArgs, nArgs);
    if(zArgs){
      Th_Free(interp, zArgs);
    }
  }

  Th_SetResult(interp, 0, 0);
  return Th_Eval(interp, 0, p->zProgram, p->nProgram);
}

/*
** This function is the command callback registered for all commands
** created using the [proc] command. The second argument, pContext,
** is a pointer to the associated ProcDefn structure.
*/
static int proc_call1(
  Th_Interp *interp,
  void *pContext, 
  int argc, 
  void *pContext,
  int argc,
  const char **argv,
  int *argl
){
  int rc;

  ProcDefn *p = (ProcDefn *)pContext;
  ProcArgs procargs;

  /* Call function proc_call2(), which will call Th_Eval() to evaluate
  ** the body of the [proc], in a new Th stack frame. This is so that
  ** the proc body has its own local variable context.
  */
  procargs.argc = argc;
  procargs.argv = argv;
  procargs.argl = argl;
  rc = Th_InFrame(interp, proc_call2, (void *)p, (void *)&procargs);

  if( rc==TH_RETURN ){
    rc = TH_OK;
  }
  if( rc==TH_RETURN2 ){
    rc = TH_RETURN;
  }
  return rc;
}

/*
** This function is registered as the delete callback for all commands 
** created using the built-in [proc] command. It is called automatically 
** when a command created using [proc] is deleted. 
** This function is registered as the delete callback for all commands
** created using the built-in [proc] command. It is called automatically
** when a command created using [proc] is deleted.
**
** It frees the ProcDefn structure allocated when the command was created.
*/ 
*/
static void proc_del(Th_Interp *interp, void *pContext){
  ProcDefn *p = (ProcDefn *)pContext;
  Th_Free(interp, (void *)p->zUsage);
  Th_Free(interp, (void *)p);
}

/*
** TH Syntax: 
** TH Syntax:
**
**   proc name arglist code
*/
static int proc_command(
  Th_Interp *interp, 
  void *ctx, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv, 
  const char **argv,
  int *argl
){
  int rc;
  char *zName;
  const char *zName;

  ProcDefn *p;
  int nByte;
  int i;
  char *zSpace;

  char **azParam;
  int *anParam;
  int nParam;

  char *zUsage = 0;               /* Build up a usage message here */
  char *zUsage = 0;                /* Build up a usage message here */
  int nUsage = 0;                  /* Number of bytes at zUsage */

  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "proc name arglist code");
  }
  if( Th_SplitList(interp, argv[2], argl[2], &azParam, &anParam, &nParam) ){
    return TH_ERROR;
  }

  /* Allocate the new ProcDefn structure. */
  nByte = sizeof(ProcDefn) +                        /* ProcDefn structure */
      (sizeof(char *) + sizeof(int)) * nParam +    /* azParam, anParam */
      (sizeof(char *) + sizeof(int)) * nParam +    /* azDefault, anDefault */
      (sizeof(char *) + sizeof(int)) * nParam +     /* azParam, anParam */
      (sizeof(char *) + sizeof(int)) * nParam +     /* azDefault, anDefault */
      argl[3] +                                     /* zProgram */
      argl[2];     /* Space for copies of parameter names and default values */
      argl[2];    /* Space for copies of parameter names and default values */
  p = (ProcDefn *)Th_Malloc(interp, nByte);

  /* If the last parameter in the parameter list is "args", then set the
  ** ProcDefn.hasArgs flag. The "args" parameter does not require an
  ** entry in the ProcDefn.azParam[] or ProcDefn.azDefault[] arrays.
  */
  if( nParam>0 ){
  if( anParam[nParam-1]==4 && 0==memcmp(azParam[nParam-1], "args", 4) ){
    p->hasArgs = 1;
    nParam--;
    if( anParam[nParam-1]==4 && 0==memcmp(azParam[nParam-1], "args", 4) ){
      p->hasArgs = 1;
      nParam--;
    }
  }

  p->nParam    = nParam;
  p->azParam   = (char **)&p[1];
  p->anParam   = (int *)&p->azParam[nParam];
  p->azDefault = (char **)&p->anParam[nParam];
  p->anDefault = (int *)&p->azDefault[nParam];
  p->zProgram = (char *)&p->anDefault[nParam];
  memcpy(p->zProgram, argv[3], argl[3]);
  p->nProgram = argl[3];
  zSpace = &p->zProgram[p->nProgram];
  

  for(i=0; i<nParam; i++){
    char **az;
    int *an;
    int n;
    if( Th_SplitList(interp, azParam[i], anParam[i], &az, &an, &n) ){
      goto error_out;
    }
515
516
517
518
519
520
521
522

523
524
525
526
527
528
529
530
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538

539
540
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544


545
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547
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551
552
553
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555
556

557
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560
561
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563
564
565
566
567




568
569
570
571
572
573
574
575
576

577
578
579
580

581
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583
584
585
586
587
588




589
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640
641
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643
644
645
646

647
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649
650
651
652
653
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655
656
657
658
659
660
661
662

663
664
665
666
667


668
669
670

671
672
673
674
675
676
677
678
679
680

681
682
683
684
685
686
687
688




689
690
691
692
693
694
695
696
697
698
699
700

701
702
703
704

705
706
707
708
709




710
711
712
713
714
715
716
717
718
719
720







-
+















-
+




-
-
+
+

-
+









-
+







-
-
-
-
+
+
+
+








-
+



-
+




-
-
-
-
+
+
+
+







  if( p->hasArgs ){
    Th_StringAppend(interp, &zUsage, &nUsage, (const char *)" ?args...?", -1);
  }
  p->zUsage = zUsage;
  p->nUsage = nUsage;

  /* Register the new command with the th1 interpreter. */
  zName = (char *)argv[1];
  zName = argv[1];
  rc = Th_CreateCommand(interp, zName, proc_call1, (void *)p, proc_del);
  if( rc==TH_OK ){
    Th_SetResult(interp, 0, 0);
  }

  Th_Free(interp, azParam);
  return TH_OK;

 error_out:
  Th_Free(interp, azParam);
  Th_Free(interp, zUsage);
  return TH_ERROR;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   rename oldcmd newcmd
*/
static int rename_command(
  Th_Interp *interp, 
  void *ctx, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv, 
  const char **argv,
  int *argl
){
  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "rename oldcmd newcmd");
  }
  return Th_RenameCommand(interp, argv[1], argl[1], argv[2], argl[2]);
}

/*
** TH Syntax: 
** TH Syntax:
**
**   break    ?value...?
**   continue ?value...?
**   ok       ?value...?
**   error    ?value...?
*/
static int simple_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 && argc!=2 ){
    return Th_WrongNumArgs(interp, "return ?value?");
  }
  if( argc==2 ){
    Th_SetResult(interp, argv[1], argl[1]);
  }
  return (int)ctx;
  return FOSSIL_PTR_TO_INT(ctx);
}

/*
** TH Syntax: 
** TH Syntax:
**
**   return ?-code code? ?value?
*/
static int return_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int iCode = TH_RETURN;
  if( argc<1 || argc>4 ){
    return Th_WrongNumArgs(interp, "return ?-code code? ?value?");
  }
  if( argc>2 ){
632
633
634
635
636
637
638
639

640
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642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665






666
667
668
669
670
671
672
673








674
675





























676
677
678
679
680
681
682
683
684
685
686
687
688
689
690

691
692
693



694
695
696
697
698
699





700
701























702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720

721
722
723
724
725
726






727
728
729
730
731
732
733
734








735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
























751
752
753
754
755
756
757
757
758
759
760
761
762
763

764
765
766
767
768
769
770
771
772
773
774
775

776

777

778
779
780
781
782
783

784


785
786
787
788
789
790
791







792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
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815
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817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839


840
841
842

843



844
845
846






847
848
849
850
851
852

853
854
855
856
857
858
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861
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864
865
866
867
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869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885

886

887

888
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890

891
892
893

894


895
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898
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900
901







902
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904
905
906
907
908
909
910
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912
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914
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931
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937
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939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956







-
+











-

-

-






-

-
-
+
+
+
+
+
+

-
-
-
-
-
-
-
+
+
+
+
+
+
+
+


+
+
+
+
+
+
+
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+
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+
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+
+
+
+
+
+









-
-



-
+
-
-
-
+
+
+
-
-
-
-
-
-
+
+
+
+
+

-
+
+
+
+
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+
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+
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+
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+
+
+
+
+










-

-

-



-
+


-

-
-
+
+
+
+
+
+

-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
















+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+







  }
  if( iRes==0 ){
    iRes = nLeft-nRight;
  }

  if( iRes<0 ) iRes = -1;
  if( iRes>0 ) iRes = 1;
  

  return Th_SetResultInt(interp, iRes);
}

/*
** TH Syntax:
**
**   string first NEEDLE HAYSTACK
*/
static int string_first_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  const char *zNeedle;
  int nNeedle;
  const char *zHaystack;
  int nHaystack;
  int i;
  int iRes = -1;

  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "string first needle haystack");
  }

  zNeedle = argv[2];
  nNeedle = argl[2];
  zHaystack = argv[3];
  nHaystack = argl[3];
  nHaystack = argl[3];

  if( nNeedle && nHaystack && nNeedle<=nHaystack ){
    const char *zNeedle = argv[2];
    const char *zHaystack = argv[3];
    int i;

  for(i=0; i<(nHaystack-nNeedle); i++){
    if( 0==memcmp(zNeedle, &zHaystack[i], nNeedle) ){
      iRes = i;
      break;
    }
  }
  
    for(i=0; i<=(nHaystack-nNeedle); i++){
      if( 0==memcmp(zNeedle, &zHaystack[i], nNeedle) ){
        iRes = i;
        break;
      }
    }
  }

  return Th_SetResultInt(interp, iRes);
}

/*
** TH Syntax:
**
**   string index STRING INDEX
*/
static int string_index_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int iIndex;

  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "string index string index");
  }

  if( argl[3]==3 && 0==memcmp("end", argv[3], 3) ){
    iIndex = argl[2]-1;
  }else if( Th_ToInt(interp, argv[3], argl[3], &iIndex) ){
    Th_ErrorMessage(
        interp, "Expected \"end\" or integer, got:", argv[3], argl[3]);
    return TH_ERROR;
  }

  if( iIndex>=0 && iIndex<argl[2] ){
    return Th_SetResult(interp, &argv[2][iIndex], 1);
  }else{
    return Th_SetResult(interp, 0, 0);
  }
}

/*
** TH Syntax:
**
**   string is CLASS STRING
*/
static int string_is_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int i;
  int iRes = 1;
  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "string is class string");
  }
  if( argl[2]!=5 || 0!=memcmp(argv[2], "alnum", 5) ){
  if( argl[2]==5 && 0==memcmp(argv[2], "alnum", 5) ){
    Th_ErrorMessage(interp, "Expected alnum, got: ", argv[2], argl[2]);
    return TH_ERROR;
  }
    int i;
    int iRes = 1;


  for(i=0; i<argl[3]; i++){
    if( !th_isalnum(argv[3][i]) ){
      iRes = 0;
    }
  }
    for(i=0; i<argl[3]; i++){
      if( !th_isalnum(argv[3][i]) ){
        iRes = 0;
      }
    }

  return Th_SetResultInt(interp, iRes);
    return Th_SetResultInt(interp, iRes);
  }else if( argl[2]==6 && 0==memcmp(argv[2], "double", 6) ){
    double fVal;
    if( Th_ToDouble(interp, argv[3], argl[3], &fVal)==TH_OK ){
      return Th_SetResultInt(interp, 1);
    }
    return Th_SetResultInt(interp, 0);
  }else if( argl[2]==7 && 0==memcmp(argv[2], "integer", 7) ){
    int iVal;
    if( Th_ToInt(interp, argv[3], argl[3], &iVal)==TH_OK ){
      return Th_SetResultInt(interp, 1);
    }
    return Th_SetResultInt(interp, 0);
  }else if( argl[2]==4 && 0==memcmp(argv[2], "list", 4) ){
    if( Th_SplitList(interp, argv[3], argl[3], 0, 0, 0)==TH_OK ){
      return Th_SetResultInt(interp, 1);
    }
    return Th_SetResultInt(interp, 0);
  }else{
    Th_ErrorMessage(interp,
        "Expected alnum, double, integer, or list, got:", argv[2], argl[2]);
    return TH_ERROR;
  }
}

/*
** TH Syntax:
**
**   string last NEEDLE HAYSTACK
*/
static int string_last_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  const char *zNeedle;
  int nNeedle;
  const char *zHaystack;
  int nHaystack;
  int i;
  int iRes = -1;

  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "string first needle haystack");
    return Th_WrongNumArgs(interp, "string last needle haystack");
  }

  zNeedle = argv[2];
  nNeedle = argl[2];
  zHaystack = argv[3];
  nHaystack = argl[3];
  nHaystack = argl[3];

  if( nNeedle && nHaystack && nNeedle<=nHaystack ){
    const char *zNeedle = argv[2];
    const char *zHaystack = argv[3];
    int i;

  for(i=nHaystack-nNeedle-1; i>=0; i--){
    if( 0==memcmp(zNeedle, &zHaystack[i], nNeedle) ){
      iRes = i;
      break;
    }
  }
  
    for(i=nHaystack-nNeedle; i>=0; i--){
      if( 0==memcmp(zNeedle, &zHaystack[i], nNeedle) ){
        iRes = i;
        break;
      }
    }
  }

  return Th_SetResultInt(interp, iRes);
}

/*
** TH Syntax:
**
**   string length STRING
*/
static int string_length_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "string length string");
  }
  return Th_SetResultInt(interp, argl[2]);
}

/*
** TH Syntax:
**
**   string match PATTERN STRING
**
*/
static int string_match_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  extern char *fossil_strndup(const char*,int);
  extern void fossil_free(void*);
  char *zPat, *zStr;
  int rc;
  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "string match pattern string");
  }
  zPat = fossil_strndup(argv[2],argl[2]);
  zStr = fossil_strndup(argv[3],argl[3]);
  rc = sqlite3_strglob(zPat,zStr);
  fossil_free(zPat);
  fossil_free(zStr);
  return Th_SetResultInt(interp, !rc);
}

/*
** TH Syntax:
**
**   string range STRING FIRST LAST
*/
static int string_range_command(
812
813
814
815
816
817
818




























819

820
821
822
823
824
825
826
827
828
829
830


831
832
833
834
835
836


























































































837

838
839
840

841
842
843
844
845
846
847
848
849
850
851
852
853

854
855
856
857
858

859

860
861
862
863
864
865
866
867
868













869
870
871
872
873
874
875
876
877
878
879
880
881











882
883
884

































885
886
887
888
889
890

891
892
893
894
895



896
897
898
899
900
901
902
903
904
905
906


907
908
909


910
911
912
913
914
915
916



917
918
919
920
921
922
923
924


925
926
927
928
929
930
931
932



933
934
935
936
937
938
939
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045

1046
1047
1048
1049
1050
1051
1052
1053
1054
1055


1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
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1097
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1100
1101
1102
1103
1104
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1107
1108
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1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153

1154
1155
1156

1157
1158
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1160
1161
1162
1163
1164
1165
1166
1167
1168
1169

1170
1171
1172
1173
1174

1175
1176
1177









1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196







1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209

1210
1211
1212
1213
1214
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1218
1219
1220
1221
1222
1223
1224
1225
1226
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1228
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1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247

1248





1249
1250
1251


1252
1253
1254
1255
1256
1257
1258
1259

1260
1261
1262


1263
1264
1265
1266
1267
1268
1269


1270
1271
1272
1273
1274
1275
1276
1277
1278


1279
1280
1281
1282
1283
1284
1285



1286
1287
1288
1289
1290
1291
1292
1293
1294
1295







+
+
+
+
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+
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-
+









-
-
+
+






+
+
+
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-
+


-
+












-
+




-
+

+
-
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-
-
-
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-
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-
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-
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+





-
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-
-
-
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-
-








-
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-
-
+
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-
-
+
+
+






-
-
+
+





-
-
-
+
+
+







  Th_Free(interp, zByte);
  return TH_OK;
}

/*
** TH Syntax:
**
**   string trim STRING
**   string trimleft STRING
**   string trimright STRING
*/
static int string_trim_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int n;
  const char *z;

  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "string trim string");
  }
  z = argv[2];
  n = argl[2];
  if( argl[1]<5 || argv[1][4]=='l' ){
    while( n && th_isspace(z[0]) ){ z++; n--; }
  }
  if( argl[1]<5 || argv[1][4]=='r' ){
    while( n && th_isspace(z[n-1]) ){ n--; }
  }
  Th_SetResult(interp, z, n);
  return TH_OK;
}

/*
** TH Syntax:
**
**   info exists VAR
**   info exists VARNAME
*/
static int info_exists_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int rc;

  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "info exists var");
  }
  rc = Th_GetVar(interp, argv[2], argl[2]);
  Th_SetResultInt(interp, rc?0:1);
  rc = Th_ExistsVar(interp, argv[2], argl[2]);
  Th_SetResultInt(interp, rc);
  return TH_OK;
}

/*
** TH Syntax:
**
**   info commands
*/
static int info_commands_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int rc;
  char *zElem = 0;
  int nElem = 0;

  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "info commands");
  }
  rc = Th_ListAppendCommands(interp, &zElem, &nElem);
  if( rc!=TH_OK ){
    return rc;
  }
  Th_SetResult(interp, zElem, nElem);
  if( zElem ) Th_Free(interp, zElem);
  return TH_OK;
}

/*
** TH Syntax:
**
**   info vars
*/
static int info_vars_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int rc;
  char *zElem = 0;
  int nElem = 0;

  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "info vars");
  }
  rc = Th_ListAppendVariables(interp, &zElem, &nElem);
  if( rc!=TH_OK ){
    return rc;
  }
  Th_SetResult(interp, zElem, nElem);
  if( zElem ) Th_Free(interp, zElem);
  return TH_OK;
}

/*
** TH Syntax:
**
**   array exists VARNAME
*/
static int array_exists_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int rc;

  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "array exists var");
  }
  rc = Th_ExistsArrayVar(interp, argv[2], argl[2]);
  Th_SetResultInt(interp, rc);
  return TH_OK;
}

/*
** TH Syntax:
**
**   array names VARNAME
*/
static int array_names_command(
  Th_Interp *interp, void *ctx, int argc, const char **argv, int *argl
){
  int rc;
  char *zElem = 0;
  int nElem = 0;

  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "array names varname");
  }
  rc = Th_ListAppendArray(interp, argv[2], argl[2], &zElem, &nElem);
  if( rc!=TH_OK ){
    return rc;
  }
  Th_SetResult(interp, zElem, nElem);
  if( zElem ) Th_Free(interp, zElem);
  return TH_OK;
}

/*
** TH Syntax:
**
**   unset VAR
**   unset VARNAME
*/
static int unset_command(
  Th_Interp *interp, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "unset var");
  }
  return Th_UnsetVar(interp, argv[1], argl[1]);
}

int Th_CallSubCommand(
  Th_Interp *interp, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl,
  Th_SubCommand *aSub
  const Th_SubCommand *aSub
){
  if( argc>1 ){
  int i;
  for(i=0; aSub[i].zName; i++){
    char *zName = (char *)aSub[i].zName;
    if( th_strlen(zName)==argl[1] && 0==memcmp(zName, argv[1], argl[1]) ){
      return aSub[i].xProc(interp, ctx, argc, argv, argl);
    }
  }

  Th_ErrorMessage(interp, "Expected sub-command, got:", argv[1], argl[1]);
    int i;
    for(i=0; aSub[i].zName; i++){
      const char *zName = aSub[i].zName;
      if( th_strlen(zName)==argl[1] && 0==memcmp(zName, argv[1], argl[1]) ){
        return aSub[i].xProc(interp, ctx, argc, argv, argl);
      }
    }
  }
  if(argc<2){
    Th_ErrorMessage(interp, "Expected sub-command for", argv[0], argl[0]);
  }else{
    Th_ErrorMessage(interp, "Expected sub-command, got:", argv[1], argl[1]);
  }
  return TH_ERROR;
}

/*
** TH Syntax:
**
**   string compare STR1 STR2
**   string first   NEEDLE HAYSTACK ?STARTINDEX?
**   string is      CLASS STRING
**   string last    NEEDLE HAYSTACK ?STARTINDEX?
**   string length  STRING
**   string range   STRING FIRST LAST
**   string repeat  STRING COUNT
**   string compare   STR1 STR2
**   string first     NEEDLE HAYSTACK ?STARTINDEX?
**   string index     STRING INDEX
**   string is        CLASS STRING
**   string last      NEEDLE HAYSTACK ?STARTINDEX?
**   string length    STRING
**   string range     STRING FIRST LAST
**   string repeat    STRING COUNT
**   string trim      STRING
**   string trimleft  STRING
**   string trimright STRING
*/
static int string_command(
  Th_Interp *interp, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  static const Th_SubCommand aSub[] = {
    { "compare",   string_compare_command },
    { "first",     string_first_command },
    { "index",     string_index_command },
    { "is",        string_is_command },
    { "last",      string_last_command },
    { "length",    string_length_command },
    { "match",     string_match_command },
    { "range",     string_range_command },
    { "repeat",    string_repeat_command },
    { "trim",      string_trim_command },
    { "trimleft",  string_trim_command },
    { "trimright", string_trim_command },
    { 0, 0 }
  };
  return Th_CallSubCommand(interp, ctx, argc, argv, argl, aSub);
}

/*
** TH Syntax:
**
**   info commands
**   info exists VARNAME
**   info vars
*/
static int info_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  Th_SubCommand aSub[] = {
  static const Th_SubCommand aSub[] = {
    { "compare", string_compare_command },
    { "first",   string_first_command },
    { "is",      string_is_command },
    { "last",    string_last_command },
    { "length",  string_length_command },
    { "commands", info_commands_command },
    { "exists",   info_exists_command },
    { "vars",     info_vars_command },
    { "range",   string_range_command },
    { "repeat",  string_repeat_command },
    { 0, 0 }
  };
  return Th_CallSubCommand(interp, ctx, argc, argv, argl, aSub);
}

/*
** TH Syntax:
**
**   info exists VARNAME
**   array exists VARNAME
**   array names VARNAME
*/
static int info_command(
  Th_Interp *interp, 
static int array_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  Th_SubCommand aSub[] = {
    { "exists",  info_exists_command },
  static const Th_SubCommand aSub[] = {
    { "exists", array_exists_command },
    { "names",  array_names_command },
    { 0, 0 }
  };
  return Th_CallSubCommand(interp, ctx, argc, argv, argl, aSub);
}

/*
** Convert the script level frame specification (used by the commands 
** [uplevel] and [upvar]) in (zFrame, nFrame) to an integer frame as 
** Convert the script level frame specification (used by the commands
** [uplevel] and [upvar]) in (zFrame, nFrame) to an integer frame as
** used by Th_LinkVar() and Th_Eval(). If successful, write the integer
** frame level to *piFrame and return TH_OK. Otherwise, return TH_ERROR
** and leave an error message in the interpreter result.
*/
static int thToFrame(
  Th_Interp *interp, 
  const char *zFrame, 
  int nFrame, 
  Th_Interp *interp,
  const char *zFrame,
  int nFrame,
  int *piFrame
){
  int iFrame;
  if( th_isdigit(zFrame[0]) ){
    int rc = Th_ToInt(interp, zFrame, nFrame, &iFrame);
    if( rc!=TH_OK ) return rc;
    iFrame = iFrame * -1;
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/*
** TH Syntax:
**
**   uplevel ?LEVEL? SCRIPT
*/
static int uplevel_command(
  Th_Interp *interp, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int iFrame = -1;

  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "uplevel ?level? script...");
  }
  if( argc==3 && TH_OK!=thToFrame(interp, argv[1], argl[1], &iFrame) ){
    return TH_ERROR;
  }
  return Th_Eval(interp, iFrame, argv[argc-1], -1);
}

/*
** TH Syntax: 
** TH Syntax:
**
**   upvar ?FRAME? OTHERVAR MYVAR ?OTHERVAR MYVAR ...?
*/
static int upvar_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int iVar = 1;
  int iFrame = -1;
  int rc = TH_OK;
  int i;

  if( TH_OK==thToFrame(0, argv[1], argl[1], &iFrame) ){
    iVar++;
  }
  if( argc==iVar || (argc-iVar)%2 ){
    return Th_WrongNumArgs(interp, 
    return Th_WrongNumArgs(interp,
        "upvar frame othervar myvar ?othervar myvar...?");
  }
  for(i=iVar; rc==TH_OK && i<argc; i=i+2){
    rc = Th_LinkVar(interp, argv[i+1], argl[i+1], iFrame, argv[i], argl[i]);
  }
  return rc;
}

/*
** TH Syntax: 
** TH Syntax:
**
**   breakpoint ARGS
**
** This command does nothing at all. Its purpose in life is to serve
** as a point for setting breakpoints in a debugger.
*/
static int breakpoint_command(
  Th_Interp *interp, 
  void *ctx, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  int cnt = 0;
  cnt++;
  static unsigned int cnt = 0;
  if( (cnt++)==0xffffffff ) printf("too many TH3 breakpoints\n");
  return TH_OK;
}

/*
** Register the built-in th1 language commands with interpreter interp.
** Usually this is called soon after interpreter creation.
*/
int th_register_language(Th_Interp *interp){
  /* Array of built-in commands. */
  struct _Command {
    const char *zName;
    Th_CommandProc xProc;
    void *pContext;
  } aCommand[] = {
    {"array",    array_command,   0},
    {"catch",    catch_command,   0},
    {"expr",     expr_command,    0},
    {"for",      for_command,     0},
    {"foreach",  foreach_command, 0},
    {"if",       if_command,      0},
    {"info",     info_command,    0},
    {"lappend",  lappend_command, 0},
    {"lindex",   lindex_command,  0},
    {"list",     list_command,    0},
    {"llength",  llength_command, 0},
    {"lsearch",  lsearch_command, 0},
    {"proc",     proc_command,    0}, 
    {"proc",     proc_command,    0},
    {"rename",   rename_command,  0},
    {"set",      set_command,     0},
    {"string",   string_command,  0},
    {"unset",    unset_command,   0},
    {"uplevel",  uplevel_command, 0},
    {"upvar",    upvar_command,   0},

    {"breakpoint", breakpoint_command, 0},

    {"return",   return_command, 0},
    {"break",    simple_command, (void *)TH_BREAK}, 
    {"continue", simple_command, (void *)TH_CONTINUE}, 
    {"error",    simple_command, (void *)TH_ERROR}, 
    {"break",    simple_command, (void *)TH_BREAK},
    {"continue", simple_command, (void *)TH_CONTINUE},
    {"error",    simple_command, (void *)TH_ERROR},

    {0, 0}
    {0, 0, 0}
  };
  int i;
  size_t i;

  /* Add the language commands. */
  for(i=0; i<(sizeof(aCommand)/sizeof(aCommand[0])); i++){
    void *ctx;
    if ( !aCommand[i].zName || !aCommand[i].xProc ) continue;
    void *ctx = aCommand[i].pContext;
    ctx = aCommand[i].pContext;
    Th_CreateCommand(interp, aCommand[i].zName, aCommand[i].xProc, ctx, 0);
  }

  return TH_OK;
}
Changes to src/th_main.c.
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*******************************************************************************
**
** This file contains an interface between the TH scripting language
** (an independent project) and fossil.
*/
#include "config.h"
#include "th_main.h"
#include "sqlite3.h"

#if INTERFACE
/*
** Flag parameters to the Th_FossilInit() routine used to control the
** interpreter creation and initialization process.
*/
#define TH_INIT_NONE        ((u32)0x00000000) /* No flags. */
#define TH_INIT_NEED_CONFIG ((u32)0x00000001) /* Open configuration first? */
#define TH_INIT_FORCE_TCL   ((u32)0x00000002) /* Force Tcl to be enabled? */
#define TH_INIT_FORCE_RESET ((u32)0x00000004) /* Force TH1 commands re-added? */
#define TH_INIT_FORCE_SETUP ((u32)0x00000008) /* Force eval of setup script? */
#define TH_INIT_NO_REPO     ((u32)0x00000010) /* Skip opening repository. */
#define TH_INIT_NO_ENCODE   ((u32)0x00000020) /* Do not html-encode sendText()*/
                                              /* output. */
#define TH_INIT_MASK        ((u32)0x0000003F) /* All possible init flags. */

/*
** Useful and/or "well-known" combinations of flag values.
*/
#define TH_INIT_DEFAULT     (TH_INIT_NONE)      /* Default flags. */
#define TH_INIT_HOOK        (TH_INIT_NEED_CONFIG | TH_INIT_FORCE_SETUP)
#define TH_INIT_FORBID_MASK (TH_INIT_FORCE_TCL) /* Illegal from a script. */
#endif

/*
** Flags set by functions in this file to keep track of integration state
** information.  These flags should not be used outside of this file.
*/
#define TH_STATE_CONFIG     ((u32)0x00000200) /* We opened the config. */
#define TH_STATE_REPOSITORY ((u32)0x00000400) /* We opened the repository. */
#define TH_STATE_MASK       ((u32)0x00000600) /* All possible state flags. */

#ifdef FOSSIL_ENABLE_TH1_HOOKS
/*
** These are the "well-known" TH1 error messages that occur when no hook is
** registered to be called prior to executing a command or processing a web
** page, respectively.  If one of these errors is seen, it will not be sent
** or displayed to the remote user or local interactive user, respectively.
*/
#define NO_COMMAND_HOOK_ERROR "no such command:  command_hook"
#define NO_WEBPAGE_HOOK_ERROR "no such command:  webpage_hook"
#endif

/*
** These macros are used within this file to detect if the repository and
** configuration ("user") database are currently open.
*/
#define Th_IsRepositoryOpen()     (g.repositoryOpen)
#define Th_IsConfigOpen()         (g.zConfigDbName!=0)

/*
** When memory debugging is enabled, use our custom memory allocator.
*/
#if defined(TH_MEMDEBUG)
/*
** Global variable counting the number of outstanding calls to malloc()
** made by the th1 implementation. This is used to catch memory leaks
** in the interpreter. Obviously, it also means th1 is not threadsafe.
*/
static int nOutstandingMalloc = 0;

/*
** Implementations of malloc() and free() to pass to the interpreter.
*/
static void *xMalloc(unsigned int n){
  void *p = malloc(n);
  void *p = fossil_malloc(n);
  if( p ){
    nOutstandingMalloc++;
  }
  return p;
}
static void xFree(void *p){
  if( p ){
    nOutstandingMalloc--;
  }
  free(p);
}
static Th_Vtab vtab = { xMalloc, xFree };

/*
** Returns the number of outstanding TH1 memory allocations.
*/
int Th_GetOutstandingMalloc(){
  return nOutstandingMalloc;
}
#endif

/*
** Generate a TH1 trace message if debugging is enabled.
*/
void Th_Trace(const char *zFormat, ...){
  va_list ap;
  va_start(ap, zFormat);
  blob_vappendf(&g.thLog, zFormat, ap);
  va_end(ap);
}

/*
** Forces input and output to be done via the CGI subsystem.
*/
void Th_ForceCgi(int fullHttpReply){
  g.httpOut = stdout;
  g.httpIn = stdin;
  fossil_binary_mode(g.httpOut);
  fossil_binary_mode(g.httpIn);
  g.cgiOutput = 1;
  g.fullHttpReply = fullHttpReply;
}

/*
** Checks if the TH1 trace log needs to be enabled.  If so, prepares
** it for use.
*/
void Th_InitTraceLog(){
  g.thTrace = find_option("th-trace", 0, 0)!=0;
  if( g.thTrace ){
    g.fAnyTrace = 1;
    blob_zero(&g.thLog);
  }
}

/*
** Prints the entire contents of the TH1 trace log to the standard
** output channel.
*/
void Th_PrintTraceLog(){
  if( g.thTrace ){
    fossil_print("\n------------------ BEGIN TRACE LOG ------------------\n");
    fossil_print("%s", blob_str(&g.thLog));
    fossil_print("\n------------------- END TRACE LOG -------------------\n");
  }
}

/*
** - adopted from ls_cmd_rev in checkin.c
** - adopted commands/error handling for usage within th1
** - interface adopted to allow result creation as TH1 List
**
** Takes a check-in identifier in zRev and an optiona glob pattern in zGLOB
** as parameter returns a TH list in pzList,pnList with filenames matching
** glob pattern with the checking
*/
static void dir_cmd_rev(
  Th_Interp *interp,
  char **pzList,
  int *pnList,
  const char *zRev,  /* Revision string given */
  const char *zGlob, /* Glob pattern given */
  int bDetails
){
  Stmt q;
  char *zOrderBy = "pathname COLLATE nocase";
  int rid;

  rid = th1_name_to_typed_rid(interp, zRev, "ci");
  compute_fileage(rid, zGlob);
  db_prepare(&q,
    "SELECT datetime(fileage.mtime, toLocal()), fileage.pathname,\n"
    "       blob.size\n"
    "  FROM fileage, blob\n"
    " WHERE blob.rid=fileage.fid \n"
    " ORDER BY %s;", zOrderBy /*safe-for-%s*/
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFile = db_column_text(&q, 1);
    if( bDetails ){
      const char *zTime = db_column_text(&q, 0);
      int size = db_column_int(&q, 2);
      char zSize[50];
      char *zSubList = 0;
      int nSubList = 0;
      sqlite3_snprintf(sizeof(zSize), zSize, "%d", size);
      Th_ListAppend(interp, &zSubList, &nSubList, zFile, -1);
      Th_ListAppend(interp, &zSubList, &nSubList, zSize, -1);
      Th_ListAppend(interp, &zSubList, &nSubList, zTime, -1);
      Th_ListAppend(interp, pzList, pnList, zSubList, -1);
      Th_Free(interp, zSubList);
    }else{
      Th_ListAppend(interp, pzList, pnList, zFile, -1);
    }
  }
  db_finalize(&q);
}

/*
** TH1 command: dir CHECKIN ?GLOB? ?DETAILS?
**
** Returns a list containing all files in CHECKIN. If GLOB is given only
** the files matching the pattern GLOB within CHECKIN will be returned.
** If DETAILS is non-zero, the result will be a list-of-lists, with each
** element containing at least three elements: the file name, the file
** size (in bytes), and the file last modification time (relative to the
** time zone configured for the repository).
*/
static int dirCmd(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  const char *zGlob = 0;
  int bDetails = 0;

  if( argc<2 || argc>4 ){
    return Th_WrongNumArgs(interp, "dir CHECKIN ?GLOB? ?DETAILS?");
  }
  if( argc>=3 ){
    zGlob = argv[2];
  }
  if( argc>=4 && Th_ToInt(interp, argv[3], argl[3], &bDetails) ){
    return TH_ERROR;
  }
  if( Th_IsRepositoryOpen() ){
    char *zList = 0;
    int nList = 0;
    dir_cmd_rev(interp, &zList, &nList, argv[1], zGlob, bDetails);
    Th_SetResult(interp, zList, nList);
    Th_Free(interp, zList);
    return TH_OK;
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

/*
** TH1 command: httpize STRING
**
** Escape all characters of STRING which have special meaning in URI
** components. Return a new string result.
*/
static int httpizeCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  char *zOut;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "httpize STRING");
  }
  zOut = httpize((char*)argv[1], argl[1]);
  Th_SetResult(interp, zOut, -1);
  free(zOut);
  return TH_OK;
}

/*
** True if output is enabled.  False if disabled.
*/
static int enableOutput = 1;

/*
** TH command:     enable_output BOOLEAN
** TH1 command: enable_output BOOLEAN
**
** Enable or disable the puts and hputs commands.
** Enable or disable the puts, wiki, combobox and copybtn commands.
*/
static int enableOutputCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  if( argc<2 || argc>3 ){
    return Th_WrongNumArgs(interp, "enable_output [LABEL] BOOLEAN");
  }
  rc = Th_ToInt(interp, argv[argc-1], argl[argc-1], &enableOutput);
  if( g.thTrace ){
    Th_Trace("enable_output {%.*s} -> %d<br>\n", argl[1],argv[1],enableOutput);
  }
  return rc;
}

/*
** TH1 command: enable_htmlify ?BOOLEAN?
**
** Enable or disable the HTML escaping done by all output which
** originates from TH1 (via sendText()).
**
** If passed no arguments it instead returns 0 or 1 to indicate the
** current state.
*/
static int enableHtmlifyCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc = 0, buul;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "enable_output BOOLEAN");
  if( argc>3 ){
    return Th_WrongNumArgs(interp,
                           "enable_htmlify [TRACE_LABEL] ?BOOLEAN?");
  }
  buul = (TH_INIT_NO_ENCODE & g.th1Flags) ? 0 : 1;
  Th_SetResultInt(g.interp, buul);
  if(argc>1){
    if( g.thTrace ){
      Th_Trace("enable_htmlify {%.*s} -> %d<br>\n",
               argl[1],argv[1],buul);
    }
  return Th_ToInt(interp, argv[1], argl[1], &enableOutput);
    rc = Th_ToInt(interp, argv[argc-1], argl[argc-1], &buul);
    if(!rc){
      if(buul){
        g.th1Flags &= ~TH_INIT_NO_ENCODE;
      }else{
        g.th1Flags |= TH_INIT_NO_ENCODE;
      }
    }
  }
  return rc;
}

/*
** Returns a name for a TH1 return code.
*/
const char *Th_ReturnCodeName(int rc, int nullIfOk){
  static char zRc[32];

  switch( rc ){
    case TH_OK:       return nullIfOk ? 0 : "TH_OK";
    case TH_ERROR:    return "TH_ERROR";
    case TH_BREAK:    return "TH_BREAK";
    case TH_RETURN:   return "TH_RETURN";
    case TH_CONTINUE: return "TH_CONTINUE";
    case TH_RETURN2:  return "TH_RETURN2";
    default: {
      sqlite3_snprintf(sizeof(zRc), zRc, "TH1 return code %d", rc);
    }
  }
  return zRc;
}

/* See Th_SetOutputBlob() */
static Blob * pThOut = 0;
/*
** Sets the th1-internal output-redirection blob and returns the
** previous value. That blob is used by certain output-generation
** routines to emit its output. It returns the previous value so that
** a routine can temporarily replace the buffer with its own and
** restore it when it's done.
*/
Blob * Th_SetOutputBlob(Blob * pOut){
  Blob * tmp = pThOut;
  pThOut = pOut;
  return tmp;
}

/*
** Send text to the appropriate output:  Either to the console
** or to the CGI reply buffer.
** Send text to the appropriate output: If pOut is not NULL, it is
** appended there, else to the console or to the CGI reply buffer.
** Escape all characters with special meaning to HTML if the encode
** parameter is true, with the exception that that flag is ignored if
** g.th1Flags has the TH_INIT_NO_ENCODE flag.
**
** If pOut is NULL and the global pThOut is not then that blob
** is used for output.
*/
static void sendText(const char *z, int n, int encode){
static void sendText(Blob * pOut, const char *z, int n, int encode){
  if(0==pOut && pThOut!=0){
    pOut = pThOut;
  }
  if(TH_INIT_NO_ENCODE & g.th1Flags){
    encode = 0;
  }
  if( enableOutput && n ){
    if( n<0 ) n = strlen(z);
    if( encode ){
      z = htmlize(z, n);
      n = strlen(z);
    }
    if(pOut!=0){
      blob_append(pOut, z, n);
    if( g.cgiOutput ){
    }else if( g.cgiOutput ){
      cgi_append_content(z, n);
    }else{
      fwrite(z, 1, n, stdout);
      fflush(stdout);
    }
    if( encode ) free((char*)z);
  }
}

/*
** error-reporting counterpart of sendText().
*/
static void sendError(Blob * pOut, const char *z, int n, int forceCgi){
  int savedEnable = enableOutput;
  enableOutput = 1;
  if( forceCgi || g.cgiOutput ){
    sendText(pOut, "<hr><p class=\"thmainError\">", -1, 0);
  }
  sendText(pOut,"ERROR: ", -1, 0);
  sendText(pOut,(char*)z, n, 1);
  sendText(pOut,forceCgi || g.cgiOutput ? "</p>" : "\n", -1, 0);
  enableOutput = savedEnable;
}

/*
** Convert name to an rid.  This function was copied from name_to_typed_rid()
** in name.c; however, it has been modified to report TH1 script errors instead
** of "fatal errors".
*/
int th1_name_to_typed_rid(
  Th_Interp *interp,
  const char *zName,
  const char *zType
){
  int rid;

  if( zName==0 || zName[0]==0 ) return 0;
  rid = symbolic_name_to_rid(zName, zType);
  if( rid<0 ){
    Th_SetResult(interp, "ambiguous name", -1);
  }else if( rid==0 ){
    Th_SetResult(interp, "name not found", -1);
  }
  return rid;
}

/*
** Attempt to lookup the specified check-in and file name into an rid.
** This function was copied from artifact_from_ci_and_filename() in
** info.c; however, it has been modified to report TH1 script errors
** instead of "fatal errors".
*/
int th1_artifact_from_ci_and_filename(
  Th_Interp *interp,
  const char *zCI,
  const char *zFilename
){
  int cirid;
  Blob err;
  Manifest *pManifest;
  ManifestFile *pFile;

  if( zCI==0 ){
    Th_SetResult(interp, "invalid check-in", -1);
    return 0;
  }
  if( zFilename==0 ){
    Th_SetResult(interp, "invalid file name", -1);
    return 0;
  }
  cirid = th1_name_to_typed_rid(interp, zCI, "*");
  blob_zero(&err);
  pManifest = manifest_get(cirid, CFTYPE_MANIFEST, &err);
  if( pManifest==0 ){
    if( blob_size(&err)>0 ){
      Th_SetResult(interp, blob_str(&err), blob_size(&err));
    }else{
      Th_SetResult(interp, "manifest not found", -1);
    }
    blob_reset(&err);
    return 0;
  }
  blob_reset(&err);
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest,0))!=0 ){
    if( fossil_strcmp(zFilename, pFile->zName)==0 ){
      int rid = db_int(0, "SELECT rid FROM blob WHERE uuid=%Q", pFile->zUuid);
      manifest_destroy(pManifest);
      return rid;
    }
  }
  Th_SetResult(interp, "file name not found in manifest", -1);
  return 0;
}

/*
** TH1 command: nonce
**
** Returns the value of the cryptographic nonce for the request being
** processed.
*/
static int nonceCmd(
  Th_Interp *interp,
  void *pConvert,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "nonce");
  }
  Th_SetResult(interp, style_nonce(), -1);
  return TH_OK;
}

/*
** TH command:     puts STRING
** TH command:     html STRING
** TH1 command: puts STRING
** TH1 command: html STRING
**
** Output STRING as HTML (html) or unchanged (puts).  
** Output STRING escaped for HTML (puts) or unchanged (html).
*/
static int putsCmd(
  Th_Interp *interp, 
  void *pConvert, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *pConvert,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "puts STRING");
  }
  sendText(0,(char*)argv[1], argl[1], *(unsigned int*)pConvert);
  return TH_OK;
}

/*
** TH1 command: redirect URL ?withMethod?
**
** Issues an HTTP redirect to the specified URL and then exits the process.
** By default, an HTTP status code of 302 is used.  If the optional withMethod
** argument is present and non-zero, an HTTP status code of 307 is used, which
** should force the user agent to preserve the original method for the request
** (e.g. GET, POST) instead of (possibly) forcing the user agent to change the
** method to GET.
*/
static int redirectCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int withMethod = 0;
  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "redirect URL ?withMethod?");
  }
  if( argc==3 ){
    if( Th_ToInt(interp, argv[2], argl[2], &withMethod) ){
      return TH_ERROR;
    }
  }
  if( withMethod ){
    cgi_redirect_with_method(argv[1]);
  }else{
    cgi_redirect(argv[1]);
  }
  Th_SetResult(interp, argv[1], argl[1]); /* NOT REACHED */
  return TH_OK;
}

/*
** TH1 command: insertCsrf
**
** While rendering a form, call this command to add the Anti-CSRF token
** as a hidden element of the form.
*/
static int insertCsrfCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "insertCsrf");
  }
  login_insert_csrf_secret();
  return TH_OK;
}

/*
** TH1 command: verifyCsrf
**
** Before using the results of a form, first call this command to verify
** that this Anti-CSRF token is present and is valid.  If the Anti-CSRF token
** is missing or is incorrect, that indicates a cross-site scripting attack.
** If the event of an attack is detected, an error message is generated and
** all further processing is aborted.
*/
static int verifyCsrfCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "verifyCsrf");
  }
  if( !cgi_csrf_safe(2) ){
    fossil_fatal("possible CSRF attack");
  }
  return TH_OK;
}

/*
** TH1 command: verifyLogin
**
** Returns non-zero if the specified user name and password represent a
** valid login for the repository.
*/
static int verifyLoginCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  const char *zUser;
  const char *zPass;
  int uid;
  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "verifyLogin userName password");
  }
  zUser = argv[1];
  zPass = argv[2];
  uid = login_search_uid(&zUser, zPass);
  Th_SetResultInt(interp, uid!=0);
  if( uid==0 ) sqlite3_sleep(100);
  return TH_OK;
}

/*
** TH1 command: markdown STRING
**
** Renders the input string as markdown.  The result is a two-element list.
** The first element is the text-only title string.  The second element
** contains the body, rendered as HTML.
*/
static int markdownCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  Blob src, title, body;
  char *zValue = 0;
  int nValue = 0;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "markdown STRING");
  }
  blob_zero(&src);
  sendText((char*)argv[1], argl[1], pConvert!=0);
  blob_init(&src, (char*)argv[1], argl[1]);
  blob_zero(&title); blob_zero(&body);
  markdown_to_html(&src, &title, &body);
  Th_ListAppend(interp, &zValue, &nValue, blob_str(&title), blob_size(&title));
  Th_ListAppend(interp, &zValue, &nValue, blob_str(&body), blob_size(&body));
  Th_SetResult(interp, zValue, nValue);
  Th_Free(interp, zValue);
  return TH_OK;
}

/*
** TH1 command: decorate STRING
** TH command:      wiki STRING
** TH1 command: wiki STRING
**
** Render the input string as wiki.
** Render the input string as wiki.  For the decorate command, only links
** are handled.
*/
static int wikiCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int flags = WIKI_INLINE | WIKI_NOBADLINKS | *(unsigned int*)p;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "wiki STRING");
  }
  if( enableOutput ){
    Blob src;
    blob_init(&src, (char*)argv[1], argl[1]);
    wiki_convert(&src, 0, WIKI_INLINE);
    wiki_convert(&src, 0, flags);
    blob_reset(&src);
  }
  return TH_OK;
}

/*
** TH command:      htmlize STRING
** TH1 command: htmlize STRING
**
** Escape all characters of STRING which have special meaning in HTML.
** Return a new string result.
*/
static int htmlizeCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  char *zOut;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "htmlize STRING");
  }
  zOut = htmlize((char*)argv[1], argl[1]);
  Th_SetResult(interp, zOut, -1);
  free(zOut);
  return TH_OK;
}

/*
** TH1 command: encode64 STRING
**
** Encode the specified string using Base64 and return the result.
*/
static int encode64Cmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  char *zOut;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "encode64 STRING");
  }
  zOut = encode64((char*)argv[1], argl[1]);
  Th_SetResult(interp, zOut, -1);
  free(zOut);
  return TH_OK;
}

/*
** TH command:      date
** TH1 command: date
**
** Return a string which is the current time and date.
** Return a string which is the current time and date.  If the
** -local option is used, the date appears using localtime instead
** of UTC.
*/
static int dateCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  char *zOut;
  if( argc>=2 && argl[1]==6 && memcmp(argv[1],"-local",6)==0 ){
    zOut = db_text("??", "SELECT datetime('now',toLocal())");
  }else{
  char *zOut = db_text("??", "SELECT datetime('now')");
    zOut = db_text("??", "SELECT datetime('now')");
  }
  Th_SetResult(interp, zOut, -1);
  free(zOut);
  return TH_OK;
}

/*
** TH command:     hascap STRING
** TH1 command: hascap STRING...
** TH1 command: anoncap STRING...
**
** Return true if the current user (hascap) or if the anonymous user
** Return true if the user has all of the capabilities listed in STRING.
** (anoncap) has all of the capabilities listed in STRING.
*/
static int hascapCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc = 1, i;
  char *zCapList = 0;
  int nCapList = 0;
  if( argc<2 ){
    return Th_WrongNumArgs(interp, "hascap STRING ...");
  }
  for(i=1; rc==1 && i<argc; i++){
    if( g.thTrace ){
      Th_ListAppend(interp, &zCapList, &nCapList, argv[i], argl[i]);
    }
    rc = login_has_capability((char*)argv[i],argl[i],*(int*)p);
  }
  if( g.thTrace ){
    Th_Trace("[%s %#h] => %d<br>\n", argv[0], nCapList, zCapList, rc);
    Th_Free(interp, zCapList);
  }
  Th_SetResultInt(interp, rc);
  return TH_OK;
}

/*
** TH1 command:   capexpr CAPABILITY-EXPR
**
** Nmemonic:  "CAPability EXPRression"
**
** The capability expression is a list.  Each term of the list is a cluster
** of capability letters.  The overall expression is true if any one term
** is true.  A single term is true if all letters within that term are true.
** Or, if the term begins with "!", then the term is true if none of the
** terms or true.  Or, if the term begins with "@" then the term is true
** if all of the capability letters in that term are available to the
** "anonymous" user.  Or, if the term is "*" then it is always true.
**
** Examples:
**
**   capexpr {j o r}               True if any one of j, o, or r are available
**   capexpr {oh}                  True if both o and h are available
**   capexpr {@2 @3 4 5 6}         2 or 3 available for anonymous or one of
**                                   4, 5 or 6 is available for the user
*/
int capexprCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  char **azCap;
  int *anCap;
  int nCap;
  int rc;
  int i;

  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "hascap STRING");
    return Th_WrongNumArgs(interp, "capexpr EXPR");
  }
  rc = Th_SplitList(interp, argv[1], argl[1], &azCap, &anCap, &nCap);
  if( rc ) return rc;
  rc = 0;
  for(i=0; i<nCap; i++){
    if( azCap[i][0]=='!' ){
      rc = !login_has_capability(azCap[i]+1, anCap[i]-1, 0);
    }else if( azCap[i][0]=='@' ){
      rc = login_has_capability(azCap[i]+1, anCap[i]-1, LOGIN_ANON);
    }else if( azCap[i][0]=='*' ){
      rc = 1;
    }else{
  rc = login_has_capability((char*)argv[1],argl[1]);
      rc = login_has_capability(azCap[i], anCap[i], 0);
    }
    if( rc ) break;
  }
  Th_Free(interp, azCap);
  Th_SetResultInt(interp, rc);
  return TH_OK;
}


/*
** TH1 command: searchable STRING...
**
** Return true if searching in any of the document classes identified
** by STRING is enabled for the repository and user has the necessary
** capabilities to perform the search.
**
** Document classes:
**
**      c     Check-in comments
**      d     Embedded documentation
**      t     Tickets
**      w     Wiki
**
** To be clear, only one of the document classes identified by each STRING
** needs to be searchable in order for that argument to be true.  But
** all arguments must be true for this routine to return true.  Hence, to
** see if ALL document classes are searchable:
**
**      if {[searchable c d t w]} {...}
**
** But to see if ANY document class is searchable:
**
**      if {[searchable cdtw]} {...}
**
** This command is useful for enabling or disabling a "Search" entry
** on the menu bar.
*/
static int searchableCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc = 1, i, j;
  unsigned int searchCap = search_restrict(SRCH_ALL);
  if( argc<2 ){
    return Th_WrongNumArgs(interp, "hascap STRING ...");
  }
  for(i=1; i<argc && rc; i++){
    int match = 0;
    for(j=0; j<argl[i]; j++){
      switch( argv[i][j] ){
        case 'c':  match |= searchCap & SRCH_CKIN;  break;
        case 'd':  match |= searchCap & SRCH_DOC;   break;
        case 't':  match |= searchCap & SRCH_TKT;   break;
        case 'w':  match |= searchCap & SRCH_WIKI;  break;
      }
    }
    if( !match ) rc = 0;
  }
  if( g.thTrace ){
    Th_Trace("[searchable %#h] => %d<br>\n", argl[1], argv[1], rc);
  }
  Th_SetResultInt(interp, rc);
  return TH_OK;
}

/*
** TH1 command: hasfeature STRING
**
** Return true if the fossil binary has the given compile-time feature
** enabled. The set of features includes:
**
** "ssl"             = FOSSIL_ENABLE_SSL
** "legacyMvRm"      = FOSSIL_ENABLE_LEGACY_MV_RM
** "execRelPaths"    = FOSSIL_ENABLE_EXEC_REL_PATHS
** "th1Docs"         = FOSSIL_ENABLE_TH1_DOCS
** "th1Hooks"        = FOSSIL_ENABLE_TH1_HOOKS
** "tcl"             = FOSSIL_ENABLE_TCL
** "useTclStubs"     = USE_TCL_STUBS
** "tclStubs"        = FOSSIL_ENABLE_TCL_STUBS
** "tclPrivateStubs" = FOSSIL_ENABLE_TCL_PRIVATE_STUBS
** "json"            = FOSSIL_ENABLE_JSON
** "markdown"        = FOSSIL_ENABLE_MARKDOWN
** "unicodeCmdLine"  = !BROKEN_MINGW_CMDLINE
** "dynamicBuild"    = FOSSIL_DYNAMIC_BUILD
** "mman"            = USE_MMAN_H
** "see"             = USE_SEE
**
** Specifying an unknown feature will return a value of false, it will not
** raise a script error.
*/
static int hasfeatureCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc = 0;
  const char *zArg;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "hasfeature STRING");
  }
  zArg = (const char *)argv[1];
  if(NULL==zArg){
    /* placeholder for following ifdefs... */
  }
#if defined(FOSSIL_ENABLE_SSL)
  else if( 0 == fossil_strnicmp( zArg, "ssl\0", 4 ) ){
    rc = 1;
  }
#endif
  else if( 0 == fossil_strnicmp( zArg, "legacyMvRm\0", 11 ) ){
    rc = 1;
  }
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
  else if( 0 == fossil_strnicmp( zArg, "execRelPaths\0", 13 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_ENABLE_TH1_DOCS)
  else if( 0 == fossil_strnicmp( zArg, "th1Docs\0", 8 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_ENABLE_TH1_HOOKS)
  else if( 0 == fossil_strnicmp( zArg, "th1Hooks\0", 9 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_ENABLE_TCL)
  else if( 0 == fossil_strnicmp( zArg, "tcl\0", 4 ) ){
    rc = 1;
  }
#endif
#if defined(USE_TCL_STUBS)
  else if( 0 == fossil_strnicmp( zArg, "useTclStubs\0", 12 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_ENABLE_TCL_STUBS)
  else if( 0 == fossil_strnicmp( zArg, "tclStubs\0", 9 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
  else if( 0 == fossil_strnicmp( zArg, "tclPrivateStubs\0", 16 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_ENABLE_JSON)
  else if( 0 == fossil_strnicmp( zArg, "json\0", 5 ) ){
    rc = 1;
  }
#endif
#if !defined(BROKEN_MINGW_CMDLINE)
  else if( 0 == fossil_strnicmp( zArg, "unicodeCmdLine\0", 15 ) ){
    rc = 1;
  }
#endif
#if defined(FOSSIL_DYNAMIC_BUILD)
  else if( 0 == fossil_strnicmp( zArg, "dynamicBuild\0", 13 ) ){
    rc = 1;
  }
#endif
#if defined(USE_MMAN_H)
  else if( 0 == fossil_strnicmp( zArg, "mman\0", 5 ) ){
    rc = 1;
  }
#endif
#if defined(USE_SEE)
  else if( 0 == fossil_strnicmp( zArg, "see\0", 4 ) ){
    rc = 1;
  }
#endif
  else if( 0 == fossil_strnicmp( zArg, "markdown\0", 9 ) ){
    rc = 1;
  }
  if( g.thTrace ){
    Th_Trace("[hasfeature %#h] => %d<br>\n", argl[1], zArg, rc);
  }
  Th_SetResultInt(interp, rc);
  return TH_OK;
}


/*
** TH1 command: tclReady
**
** Return true if the fossil binary has the Tcl integration feature
** enabled and it is currently available for use by TH1 scripts.
**
*/
static int tclReadyCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc = 0;
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "tclReady");
  }
#if defined(FOSSIL_ENABLE_TCL)
  if( g.tcl.interp ){
    rc = 1;
  }
#endif
  if( g.thTrace ){
    Th_Trace("[hascap %.*h] => %d<br />\n", argl[1], argv[1], rc);
    Th_Trace("[tclReady] => %d<br>\n", rc);
  }
  Th_SetResultInt(interp, rc);
  return TH_OK;
}


/*
** TH command:     anycap STRING
** TH1 command: anycap STRING
**
** Return true if the current user user
** Return true if the user has any one of the capabilities listed in STRING.
** has any one of the capabilities listed in STRING.
*/
static int anycapCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc = 0;
  int i;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "anycap STRING");
  }
  for(i=0; rc==0 && i<argl[1]; i++){
    rc = login_has_capability((char*)&argv[1][i],1);
    rc = login_has_capability((char*)&argv[1][i],1,0);
  }
  if( g.thTrace ){
    Th_Trace("[hascap %.*h] => %d<br />\n", argl[1], argv[1], rc);
    Th_Trace("[anycap %#h] => %d<br>\n", argl[1], argv[1], rc);
  }
  Th_SetResultInt(interp, rc);
  return TH_OK;
}

/*
** TH1 command:  combobox NAME TEXT-LIST NUMLINES
** TH1 command: combobox NAME TEXT-LIST NUMLINES
**
** Generate an HTML combobox.  NAME is both the name of the
** CGI parameter and the name of a variable that contains the
** currently selected value.  TEXT-LIST is a list of possible
** values for the combobox.  NUMLINES is 1 for a true combobox.
** If NUMLINES is greater than one then the display is a listbox
** with the number of lines given.
*/
static int comboboxCmd(
  Th_Interp *interp,
  void *p, 
  int argc, 
  const char **argv, 
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "combobox NAME TEXT-LIST NUMLINES");
  }
  if( enableOutput ){
    int height;
    Blob name;
    int nValue;
    const char *zValue;
    char *z, *zH;
    int nElem;
    int *aszElem;
    char **azElem;
    int i;

    if( Th_ToInt(interp, argv[3], argl[3], &height) ) return TH_ERROR;
    Th_SplitList(interp, argv[2], argl[2], &azElem, &aszElem, &nElem);
    blob_init(&name, (char*)argv[1], argl[1]);
    zValue = Th_Fetch(blob_str(&name), &nValue);
    z = mprintf("<select name=\"%z\" size=\"%d\">", 
                 htmlize(blob_buffer(&name), blob_size(&name)), height);
    sendText(z, -1, 0);
    zH = htmlize(blob_buffer(&name), blob_size(&name));
    z = mprintf("<select id=\"%s\" name=\"%s\" size=\"%d\">", zH, zH, height);
    free(zH);
    sendText(0,z, -1, 0);
    free(z);
    blob_reset(&name);
    for(i=0; i<nElem; i++){
      zH = htmlize((char*)azElem[i], aszElem[i]);
      if( zValue && aszElem[i]==nValue 
      if( zValue && aszElem[i]==nValue
             && memcmp(zValue, azElem[i], nValue)==0 ){
        z = mprintf("<option value=\"%s\" selected>%s</option>", zH, zH);
        z = mprintf("<option value=\"%s\" selected=\"selected\">%s</option>",
                     zH, zH);
      }else{
        z = mprintf("<option value=\"%s\">%s</option>", zH, zH);
      }
      free(zH);
      sendText(z, -1, 0);
      sendText(0,z, -1, 0);
      free(z);
    }
    sendText("</select>", -1, 0);
    sendText(0,"</select>", -1, 0);
    Th_Free(interp, azElem);
  }
  return TH_OK;
}

/*
** TH1 command: copybtn TARGETID FLIPPED TEXT ?COPYLENGTH?
**
** Output TEXT with a click-to-copy button next to it. Loads the copybtn.js
** Javascript module, and generates HTML elements with the following IDs:
**
**    TARGETID:       The <span> wrapper around TEXT.
**    copy-TARGETID:  The <span> for the copy button.
**
** If the FLIPPED argument is non-zero, the copy button is displayed after TEXT.
**
** The optional COPYLENGTH argument defines the length of the substring of TEXT
** copied to clipboard:
**
**    <= 0:   No limit (default if the argument is omitted).
**    >= 3:   Truncate TEXT after COPYLENGTH (single-byte) characters.
**       1:   Use the "hash-digits" setting as the limit.
**       2:   Use the length appropriate for URLs as the limit (defined at
**            compile-time by FOSSIL_HASH_DIGITS_URL, defaults to 16).
*/
static int copybtnCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=4 && argc!=5 ){
    return Th_WrongNumArgs(interp,
                           "copybtn TARGETID FLIPPED TEXT ?COPYLENGTH?");
  }
  if( enableOutput ){
    int flipped = 0;
    int copylength = 0;
    char *zResult;
    if( Th_ToInt(interp, argv[2], argl[2], &flipped) ) return TH_ERROR;
    if( argc==5 ){
      if( Th_ToInt(interp, argv[4], argl[4], &copylength) ) return TH_ERROR;
    }
    zResult = style_copy_button(
                /*bOutputCGI==*/0, /*TARGETID==*/(char*)argv[1],
                flipped, copylength, "%h", /*TEXT==*/(char*)argv[3]);
    sendText(0,zResult, -1, 0);
    free(zResult);
  }
  return TH_OK;
}

/*
** TH1 command:     linecount STRING MAX MIN
** TH1 command: linecount STRING MAX MIN
**
** Return one more than the number of \n characters in STRING.  But
** never return less than MIN or more than MAX.
*/
static int linecntCmd(
  Th_Interp *interp,
  void *p, 
  int argc, 
  const char **argv, 
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  const char *z;
  int size, n, i;
  int iMin, iMax;
  if( argc!=4 ){
    return Th_WrongNumArgs(interp, "linecount STRING MAX MIN");
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    }
  }
  if( n<iMin ) n = iMin;
  if( n>iMax ) n = iMax;
  Th_SetResultInt(interp, n);
  return TH_OK;
}

/*
** TH1 command: repository ?BOOLEAN?
**
** Return the fully qualified file name of the open repository or an empty
** string if one is not currently open.  Optionally, it will attempt to open
** the repository if the boolean argument is non-zero.
*/
static int repositoryCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 && argc!=2 ){
    return Th_WrongNumArgs(interp, "repository ?BOOLEAN?");
  }
  if( argc==2 ){
    int openRepository = 0;
    if( Th_ToInt(interp, argv[1], argl[1], &openRepository) ){
      return TH_ERROR;
    }
    if( openRepository ) db_find_and_open_repository(OPEN_OK_NOT_FOUND, 0);
  }
  Th_SetResult(interp, g.zRepositoryName, -1);
  return TH_OK;
}

/*
** TH1 command: checkout ?BOOLEAN?
**
** Return the fully qualified directory name of the current check-out or an
** empty string if it is not available.  Optionally, it will attempt to find
** the current check-out, opening the configuration ("user") database and the
** repository as necessary, if the boolean argument is non-zero.
*/
static int checkoutCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 && argc!=2 ){
    return Th_WrongNumArgs(interp, "checkout ?BOOLEAN?");
  }
  if( argc==2 ){
    int openCheckout = 0;
    if( Th_ToInt(interp, argv[1], argl[1], &openCheckout) ){
      return TH_ERROR;
    }
    if( openCheckout ) db_open_local(0);
  }
  Th_SetResult(interp, g.zLocalRoot, -1);
  return TH_OK;
}

/*
** TH1 command: trace STRING
**
** Generate a TH1 trace message if debugging is enabled.
*/
static int traceCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "trace STRING");
  }
  if( g.thTrace ){
    Th_Trace("%s", argv[1]);
  }
  Th_SetResult(interp, 0, 0);
  return TH_OK;
}

/*
** TH1 command: globalState NAME ?DEFAULT?
**
** Returns a string containing the value of the specified global state
** variable -OR- the specified default value.  Currently, the supported
** items are:
**
** "checkout"        = The active local check-out directory, if any.
** "configuration"   = The active configuration database file name,
**                     if any.
** "executable"      = The fully qualified executable file name.
** "flags"           = The TH1 initialization flags.
** "log"             = The error log file name, if any.
** "repository"      = The active local repository file name, if
**                     any.
** "top"             = The base path for the active server instance,
**                     if applicable.
** "user"            = The active user name, if any.
** "vfs"             = The SQLite VFS in use, if overridden.
**
** Attempts to query for unsupported global state variables will result
** in a script error.  Additional global state variables may be exposed
** in the future.
**
** See also: checkout, repository, setting
*/
static int globalStateCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  const char *zDefault = 0;
  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "globalState NAME ?DEFAULT?");
  }
  if( argc==3 ){
    zDefault = argv[2];
  }
  if( fossil_strnicmp(argv[1], "checkout\0", 9)==0 ){
    Th_SetResult(interp, g.zLocalRoot ? g.zLocalRoot : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "configuration\0", 14)==0 ){
    Th_SetResult(interp, g.zConfigDbName ? g.zConfigDbName : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "executable\0", 11)==0 ){
    Th_SetResult(interp, g.nameOfExe ? g.nameOfExe : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "flags\0", 6)==0 ){
    Th_SetResultInt(interp, g.th1Flags);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "log\0", 4)==0 ){
    Th_SetResult(interp, g.zErrlog ? g.zErrlog : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "repository\0", 11)==0 ){
    Th_SetResult(interp, g.zRepositoryName ? g.zRepositoryName : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "top\0", 4)==0 ){
    Th_SetResult(interp, g.zTop ? g.zTop : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "user\0", 5)==0 ){
    Th_SetResult(interp, g.zLogin ? g.zLogin : zDefault, -1);
    return TH_OK;
  }else if( fossil_strnicmp(argv[1], "vfs\0", 4)==0 ){
    Th_SetResult(interp, g.zVfsName ? g.zVfsName : zDefault, -1);
    return TH_OK;
  }else{
    Th_ErrorMessage(interp, "unsupported global state:", argv[1], argl[1]);
    return TH_ERROR;
  }
}

/*
** TH1 command: getParameter NAME ?DEFAULT?
**
** Return the value of the specified query parameter or the specified default
** value when there is no matching query parameter.
*/
static int getParameterCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  const char *zDefault = 0;
  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "getParameter NAME ?DEFAULT?");
  }
  if( argc==3 ){
    zDefault = argv[2];
  }
  Th_SetResult(interp, cgi_parameter(argv[1], zDefault), -1);
  return TH_OK;
}

/*
** TH1 command: setParameter NAME VALUE
**
** Sets the value of the specified query parameter.
*/
static int setParameterCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "setParameter NAME VALUE");
  }
  cgi_replace_parameter(mprintf("%s", argv[1]), mprintf("%s", argv[2]));
  return TH_OK;
}

/*
** TH1 command: reinitialize ?FLAGS?
**
** Reinitializes the TH1 interpreter using the specified flags.
*/
static int reinitializeCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  u32 flags = TH_INIT_DEFAULT;
  if( argc!=1 && argc!=2 ){
    return Th_WrongNumArgs(interp, "reinitialize ?FLAGS?");
  }
  if( argc==2 ){
    int iFlags;
    if( Th_ToInt(interp, argv[1], argl[1], &iFlags) ){
      return TH_ERROR;
    }else{
      flags = (u32)iFlags;
    }
  }
  Th_FossilInit(flags & ~TH_INIT_FORBID_MASK);
  Th_SetResult(interp, 0, 0);
  return TH_OK;
}

/*
** TH1 command: render STRING
**
** Renders the template and writes the results.
*/
static int renderCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "render STRING");
  }
  rc = Th_Render(argv[1]);
  Th_SetResult(interp, 0, 0);
  return rc;
}

/*
** TH1 command: defHeader TITLE
**
** Returns the default page header.
*/
static int defHeaderCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "defHeader");
  }
  Th_SetResult(interp, get_default_header(), -1);
  return TH_OK;
}

/*
** TH1 command: styleHeader TITLE
**
** Render the configured style header for the selected skin.
*/
static int styleHeaderCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "styleHeader TITLE");
  }
  if( Th_IsRepositoryOpen() ){
    style_header("%s", argv[1]);
    Th_SetResult(interp, 0, 0);
    return TH_OK;
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

/*
** TH1 command: styleFooter
**
** Render the configured style footer for the selected skin.
*/
static int styleFooterCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "styleFooter");
  }
  if( Th_IsRepositoryOpen() ){
    style_finish_page();
    Th_SetResult(interp, 0, 0);
    return TH_OK;
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

/*
** TH1 command: styleScript ?BUILTIN-FILENAME?
**
** Render the js.txt file from the current skin.  Or, if an argument
** is supplied, render the built-in filename given.
**
** By "rendering" we mean that the script is loaded and run through
** TH1 to expand variables and process <th1>...</th1> script.  Contrast
** with the "builtin_request_js BUILTIN-FILENAME" command which just
** loads the file as-is without interpretation.
*/
static int styleScriptCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=1 && argc!=2 ){
    return Th_WrongNumArgs(interp, "styleScript ?BUILTIN_NAME?");
  }
  if( Th_IsRepositoryOpen() ){
    const char *zScript;
    if( argc==2 ){
      zScript = (const char*)builtin_file(argv[1], 0);
    }else{
      zScript = skin_get("js");
    }
    if( zScript==0 ) zScript = "";
    Th_Render(zScript);
    Th_SetResult(interp, 0, 0);
    return TH_OK;
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

/*
** TH1 command: submenu link LABEL URL
**
** Add a hyperlink to the submenu.
*/
static int submenuCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=4 || memcmp(argv[1],"link",5)!=0 ){
    return Th_WrongNumArgs(interp, "submenu link LABEL URL");
  }
  if( argl[2]==0 ){
    Th_SetResult(interp, "link's LABEL is empty", -1);
    return TH_ERROR;
  }
  if( argl[3]==0 ){
    Th_SetResult(interp, "link's URL is empty", -1);
    return TH_ERROR;
  }
  /*
  ** Label and URL are unescaped because it is expected that
  ** style_finish_page() provides propper escaping via %h format.
  */
  style_submenu_element( fossil_strdup(argv[2]), "%s", argv[3] );
  Th_SetResult(interp, 0, 0);
  return TH_OK;
}

/*
** TH1 command: builtin_request_js NAME
**
** Request that the built-in javascript file called NAME be added to the
** end of the generated page.
**
** See also:  styleScript
*/
static int builtinRequestJsCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "builtin_request_js NAME");
  }
  builtin_request_js(argv[1]);
  return TH_OK;
}

/*
** TH1 command: artifact ID ?FILENAME?
**
** Attempts to locate the specified artifact and return its contents.  An
** error is generated if the repository is not open or the artifact cannot
** be found.
*/
static int artifactCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 && argc!=3 ){
    return Th_WrongNumArgs(interp, "artifact ID ?FILENAME?");
  }
  if( Th_IsRepositoryOpen() ){
    int rid;
    Blob content;
    if( argc==3 ){
      rid = th1_artifact_from_ci_and_filename(interp, argv[1], argv[2]);
    }else{
      rid = th1_name_to_typed_rid(interp, argv[1], "*");
    }
    if( rid!=0 && content_get(rid, &content) ){
      Th_SetResult(interp, blob_str(&content), blob_size(&content));
      blob_reset(&content);
      return TH_OK;
    }else{
      return TH_ERROR;
    }
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

/*
** TH1 command: cgiHeaderLine line
**
** Adds the specified line to the CGI header.
*/
static int cgiHeaderLineCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "cgiHeaderLine line");
  }
  cgi_append_header(argv[1]);
  return TH_OK;
}

/*
** TH1 command: unversioned content FILENAME
**
** Attempts to locate the specified unversioned file and return its contents.
** An error is generated if the repository is not open or the unversioned file
** cannot be found.
*/
static int unversionedContentCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "unversioned content FILENAME");
  }
  if( Th_IsRepositoryOpen() ){
    Blob content;
    if( unversioned_content(argv[2], &content)!=0 ){
      Th_SetResult(interp, blob_str(&content), blob_size(&content));
      blob_reset(&content);
      return TH_OK;
    }else{
      return TH_ERROR;
    }
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

/*
** TH1 command: unversioned list
**
** Returns a list of the names of all unversioned files held in the local
** repository.  An error is generated if the repository is not open.
*/
static int unversionedListCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "unversioned list");
  }
  if( Th_IsRepositoryOpen() ){
    Stmt q;
    char *zList = 0;
    int nList = 0;
    db_prepare(&q, "SELECT name FROM unversioned WHERE hash IS NOT NULL"
                   " ORDER BY name");
    while( db_step(&q)==SQLITE_ROW ){
      Th_ListAppend(interp, &zList, &nList, db_column_text(&q,0), -1);
    }
    db_finalize(&q);
    Th_SetResult(interp, zList, nList);
    Th_Free(interp, zList);
    return TH_OK;
  }else{
    Th_SetResult(interp, "repository unavailable", -1);
    return TH_ERROR;
  }
}

static int unversionedCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  static const Th_SubCommand aSub[] = {
    { "content", unversionedContentCmd },
    { "list",    unversionedListCmd    },
    { 0, 0 }
  };
  return Th_CallSubCommand(interp, p, argc, argv, argl, aSub);
}


/*
** TH1 command: utime
**
** Return the number of microseconds of CPU time consumed by the current
** process in user space.
*/
static int utimeCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  sqlite3_uint64 x;
  char zUTime[50];
  fossil_cpu_times(&x, 0);
  sqlite3_snprintf(sizeof(zUTime), zUTime, "%llu", x);
  Th_SetResult(interp, zUTime, -1);
  return TH_OK;
}

/*
** TH1 command: stime
**
** Return the number of microseconds of CPU time consumed by the current
** process in system space.
*/
static int stimeCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  sqlite3_uint64 x;
  char zUTime[50];
  fossil_cpu_times(0, &x);
  sqlite3_snprintf(sizeof(zUTime), zUTime, "%llu", x);
  Th_SetResult(interp, zUTime, -1);
  return TH_OK;
}


/*
** TH1 command: randhex  N
**
** Return N*2 random hexadecimal digits with N<50.  If N is omitted,
** use a value of 10.
*/
static int randhexCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int n;
  unsigned char aRand[50];
  unsigned char zOut[100];
  if( argc!=1 && argc!=2 ){
    return Th_WrongNumArgs(interp, "repository ?BOOLEAN?");
  }
  if( argc==2 ){
    if( Th_ToInt(interp, argv[1], argl[1], &n) ){
      return TH_ERROR;
    }
    if( n<1 ) n = 1;
    if( n>(int)sizeof(aRand) ) n = sizeof(aRand);
  }else{
    n = 10;
  }
  sqlite3_randomness(n, aRand);
  encode16(aRand, zOut, n);
  Th_SetResult(interp, (const char *)zOut, -1);
  return TH_OK;
}

/*
** Run sqlite3_step() while suppressing error messages sent to the
** rendered webpage or to the console.
*/
static int ignore_errors_step(sqlite3_stmt *pStmt){
  int rc;
  g.dbIgnoreErrors++;
  rc = sqlite3_step(pStmt);
  g.dbIgnoreErrors--;
  return rc;
}

/*
** TH1 command: query [-nocomplain] SQL CODE
**
** Run the SQL query given by the SQL argument.  For each row in the result
** set, run CODE.
**
** In SQL, parameters such as $var are filled in using the value of variable
** "var".  Result values are stored in variables with the column name prior
** to each invocation of CODE.
*/
static int queryCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  sqlite3_stmt *pStmt;
  int rc;
  const char *zSql;
  int nSql;
  const char *zTail;
  int n, i;
  int res = TH_OK;
  int nVar;
  char *zErr = 0;
  int noComplain = 0;

  if( argc>3 && argl[1]==11 && strncmp(argv[1], "-nocomplain", 11)==0 ){
    argc--;
    argv++;
    argl++;
    noComplain = 1;
  }
  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "query SQL CODE");
  }
  if( g.db==0 ){
    if( noComplain ) return TH_OK;
    Th_ErrorMessage(interp, "database is not open", 0, 0);
    return TH_ERROR;
  }
  zSql = argv[1];
  nSql = argl[1];
  while( res==TH_OK && nSql>0 ){
    zErr = 0;
    report_restrict_sql(&zErr);
    g.dbIgnoreErrors++;
    rc = sqlite3_prepare_v2(g.db, argv[1], argl[1], &pStmt, &zTail);
    g.dbIgnoreErrors--;
    report_unrestrict_sql();
    if( rc!=0 || zErr!=0 ){
      if( noComplain ) return TH_OK;
      Th_ErrorMessage(interp, "SQL error: ",
                      zErr ? zErr : sqlite3_errmsg(g.db), -1);
      return TH_ERROR;
    }
    n = (int)(zTail - zSql);
    zSql += n;
    nSql -= n;
    if( pStmt==0 ) continue;
    nVar = sqlite3_bind_parameter_count(pStmt);
    for(i=1; i<=nVar; i++){
      const char *zVar = sqlite3_bind_parameter_name(pStmt, i);
      int szVar = zVar ? th_strlen(zVar) : 0;
      if( szVar>1 && zVar[0]=='$'
       && Th_GetVar(interp, zVar+1, szVar-1)==TH_OK ){
        int nVal;
        const char *zVal = Th_GetResult(interp, &nVal);
        sqlite3_bind_text(pStmt, i, zVal, nVal, SQLITE_TRANSIENT);
      }
    }
    while( res==TH_OK && ignore_errors_step(pStmt)==SQLITE_ROW ){
      int nCol = sqlite3_column_count(pStmt);
      for(i=0; i<nCol; i++){
        const char *zCol = sqlite3_column_name(pStmt, i);
        int szCol = th_strlen(zCol);
        const char *zVal = (const char*)sqlite3_column_text(pStmt, i);
        int szVal = sqlite3_column_bytes(pStmt, i);
        Th_SetVar(interp, zCol, szCol, zVal, szVal);
      }
      if( g.thTrace ){
        Th_Trace("query_eval {<pre>%#h</pre>}<br>\n", argl[2], argv[2]);
      }
      res = Th_Eval(interp, 0, argv[2], argl[2]);
      if( g.thTrace ){
        int nTrRes;
        char *zTrRes = (char*)Th_GetResult(g.interp, &nTrRes);
        Th_Trace("[query_eval] => %h {%#h}<br>\n",
                 Th_ReturnCodeName(res, 0), nTrRes, zTrRes);
      }
      if( res==TH_BREAK || res==TH_CONTINUE ) res = TH_OK;
    }
    rc = sqlite3_finalize(pStmt);
    if( rc!=SQLITE_OK ){
      if( noComplain ) return TH_OK;
      Th_ErrorMessage(interp, "SQL error: ", sqlite3_errmsg(g.db), -1);
      return TH_ERROR;
    }
  }
  return res;
}

/*
** TH1 command: setting name
**
** Gets and returns the value of the specified Fossil setting.
*/
#define SETTING_WRONGNUMARGS "setting ?-strict? ?--? name"
static int settingCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  int strict = 0;
  int nArg = 1;
  char *zValue;
  if( argc<2 || argc>4 ){
    return Th_WrongNumArgs(interp, SETTING_WRONGNUMARGS);
  }
  if( fossil_strcmp(argv[nArg], "-strict")==0 ){
    strict = 1; nArg++;
  }
  if( fossil_strcmp(argv[nArg], "--")==0 ) nArg++;
  if( nArg+1!=argc ){
    return Th_WrongNumArgs(interp, SETTING_WRONGNUMARGS);
  }
  zValue = db_get(argv[nArg], 0);
  if( zValue!=0 ){
    Th_SetResult(interp, zValue, -1);
    rc = TH_OK;
  }else if( strict ){
    Th_ErrorMessage(interp, "no value for setting \"", argv[nArg], -1);
    rc = TH_ERROR;
  }else{
    Th_SetResult(interp, 0, 0);
    rc = TH_OK;
  }
  if( g.thTrace ){
    Th_Trace("[setting %s%#h] => %d<br>\n", strict ? "strict " : "",
             argl[nArg], argv[nArg], rc);
  }
  return rc;
}

/*
** TH1 command: glob_match ?-one? ?--? patternList string
**
** Checks the string against the specified glob pattern -OR- list of glob
** patterns and returns non-zero if there is a match.
*/
#define GLOB_MATCH_WRONGNUMARGS "glob_match ?-one? ?--? patternList string"
static int globMatchCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  int one = 0;
  int nArg = 1;
  Glob *pGlob = 0;
  if( argc<3 || argc>5 ){
    return Th_WrongNumArgs(interp, GLOB_MATCH_WRONGNUMARGS);
  }
  if( fossil_strcmp(argv[nArg], "-one")==0 ){
    one = 1; nArg++;
  }
  if( fossil_strcmp(argv[nArg], "--")==0 ) nArg++;
  if( nArg+2!=argc ){
    return Th_WrongNumArgs(interp, GLOB_MATCH_WRONGNUMARGS);
  }
  if( one ){
    Th_SetResultInt(interp, sqlite3_strglob(argv[nArg], argv[nArg+1])==0);
    rc = TH_OK;
  }else{
    pGlob = glob_create(argv[nArg]);
    if( pGlob ){
      Th_SetResultInt(interp, glob_match(pGlob, argv[nArg+1]));
      rc = TH_OK;
    }else{
      Th_SetResult(interp, "unable to create glob from pattern list", -1);
      rc = TH_ERROR;
    }
    glob_free(pGlob);
  }
  return rc;
}

/*
** TH1 command: regexp ?-nocase? ?--? exp string
**
** Checks the string against the specified regular expression and returns
** non-zero if it matches.  If the regular expression is invalid or cannot
** be compiled, an error will be generated.
*/
#define REGEXP_WRONGNUMARGS "regexp ?-nocase? ?--? exp string"
static int regexpCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int rc;
  int noCase = 0;
  int nArg = 1;
  ReCompiled *pRe = 0;
  const char *zErr;
  if( argc<3 || argc>5 ){
    return Th_WrongNumArgs(interp, REGEXP_WRONGNUMARGS);
  }
  if( fossil_strcmp(argv[nArg], "-nocase")==0 ){
    noCase = 1; nArg++;
  }
  if( fossil_strcmp(argv[nArg], "--")==0 ) nArg++;
  if( nArg+2!=argc ){
    return Th_WrongNumArgs(interp, REGEXP_WRONGNUMARGS);
  }
  zErr = re_compile(&pRe, argv[nArg], noCase);
  if( !zErr ){
    Th_SetResultInt(interp, re_match(pRe,
        (const unsigned char *)argv[nArg+1], argl[nArg+1]));
    rc = TH_OK;
  }else{
    Th_SetResult(interp, zErr, -1);
    rc = TH_ERROR;
  }
  re_free(pRe);
  return rc;
}

/*
** TH1 command: http ?-asynchronous? ?--? url ?payload?
**
** Perform an HTTP or HTTPS request for the specified URL.  If a
** payload is present, it will be interpreted as text/plain and
** the POST method will be used; otherwise, the GET method will
** be used.  Upon success, if the -asynchronous option is used, an
** empty string is returned as the result; otherwise, the response
** from the server is returned as the result.  Synchronous requests
** are not currently implemented.
*/
#define HTTP_WRONGNUMARGS "http ?-asynchronous? ?--? url ?payload?"
static int httpCmd(
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int nArg = 1;
  int fAsynchronous = 0;
  const char *zType, *zRegexp;
  Blob payload;
  ReCompiled *pRe = 0;
  UrlData urlData;

  if( argc<2 || argc>5 ){
    return Th_WrongNumArgs(interp, HTTP_WRONGNUMARGS);
  }
  if( fossil_strnicmp(argv[nArg], "-asynchronous", argl[nArg])==0 ){
    fAsynchronous = 1; nArg++;
  }
  if( fossil_strcmp(argv[nArg], "--")==0 ) nArg++;
  if( nArg+1!=argc && nArg+2!=argc ){
    return Th_WrongNumArgs(interp, REGEXP_WRONGNUMARGS);
  }
  memset(&urlData, '\0', sizeof(urlData));
  url_parse_local(argv[nArg], 0, &urlData);
  if( urlData.isSsh || urlData.isFile ){
    Th_ErrorMessage(interp, "url must be http:// or https://", 0, 0);
    return TH_ERROR;
  }
  zRegexp = db_get("th1-uri-regexp", 0);
  if( zRegexp && zRegexp[0] ){
    const char *zErr = re_compile(&pRe, zRegexp, 0);
    if( zErr ){
      Th_SetResult(interp, zErr, -1);
      return TH_ERROR;
    }
  }
  if( !pRe || !re_match(pRe, (const unsigned char *)urlData.canonical, -1) ){
    Th_SetResult(interp, "url not allowed", -1);
    re_free(pRe);
    return TH_ERROR;
  }
  re_free(pRe);
  blob_zero(&payload);
  if( nArg+2==argc ){
    blob_append(&payload, argv[nArg+1], argl[nArg+1]);
    zType = "POST";
  }else{
    zType = "GET";
  }
  if( fAsynchronous ){
    const char *zSep, *zParams;
    Blob hdr;
    zParams = strrchr(argv[nArg], '?');
    if( strlen(urlData.path)>0 && zParams!=argv[nArg] ){
      zSep = "";
    }else{
      zSep = "/";
    }
    blob_zero(&hdr);
    blob_appendf(&hdr, "%s %s%s%s HTTP/1.0\r\n",
                 zType, zSep, urlData.path, zParams ? zParams : "");
    if( urlData.proxyAuth ){
      blob_appendf(&hdr, "Proxy-Authorization: %s\r\n", urlData.proxyAuth);
    }
    if( urlData.passwd && urlData.user && urlData.passwd[0]=='#' ){
      char *zCredentials = mprintf("%s:%s", urlData.user, &urlData.passwd[1]);
      char *zEncoded = encode64(zCredentials, -1);
      blob_appendf(&hdr, "Authorization: Basic %s\r\n", zEncoded);
      fossil_free(zEncoded);
      fossil_free(zCredentials);
    }
    blob_appendf(&hdr, "Host: %s\r\n"
        "User-Agent: %s\r\n", urlData.hostname, get_user_agent());
    if( zType[0]=='P' ){
      blob_appendf(&hdr, "Content-Type: application/x-www-form-urlencoded\r\n"
          "Content-Length: %d\r\n\r\n", blob_size(&payload));
    }else{
      blob_appendf(&hdr, "\r\n");
    }
    if( transport_open(&urlData) ){
      Th_ErrorMessage(interp, transport_errmsg(&urlData), 0, 0);
      blob_reset(&hdr);
      blob_reset(&payload);
      return TH_ERROR;
    }
    transport_send(&urlData, &hdr);
    transport_send(&urlData, &payload);
    blob_reset(&hdr);
    blob_reset(&payload);
    transport_close(&urlData);
    Th_SetResult(interp, 0, 0); /* NOTE: Asynchronous, no results. */
    return TH_OK;
  }else{
    Th_ErrorMessage(interp,
        "synchronous requests are not yet implemented", 0, 0);
    blob_reset(&payload);
    return TH_ERROR;
  }
}

/*
** TH1 command: captureTh1 STRING
**
** Evaluates the given string as TH1 code and captures any of its
** TH1-generated output as a string (instead of it being output),
** which becomes the result of the function.
*/
static int captureTh1Cmd(
  Th_Interp *interp,
  void *pConvert,
  int argc,
  const char **argv,
  int *argl
){
  Blob out = empty_blob;
  Blob * pOrig;
  const char * zStr;
  int nStr, rc;
  if( argc!=2 ){
    return Th_WrongNumArgs(interp, "captureTh1 STRING");
  }
  pOrig = Th_SetOutputBlob(&out);
  zStr = argv[1];
  nStr = argl[1];
  rc = Th_Eval(g.interp, 0, zStr, nStr);
  Th_SetOutputBlob(pOrig);
  if(0==rc){
    Th_SetResult(g.interp, blob_str(&out), blob_size(&out));
  }
  blob_reset(&out);
  return rc;
}


/*
** Attempts to open the configuration ("user") database.  Optionally, also
** attempts to try to find the repository and open it.
*/
void Th_OpenConfig(
  int openRepository
){
  if( openRepository && !Th_IsRepositoryOpen() ){
    db_find_and_open_repository(OPEN_ANY_SCHEMA | OPEN_OK_NOT_FOUND, 0);
    if( Th_IsRepositoryOpen() ){
      g.th1Flags |= TH_STATE_REPOSITORY;
    }else{
      g.th1Flags &= ~TH_STATE_REPOSITORY;
    }
  }
  if( !Th_IsConfigOpen() ){
    db_open_config(0, 1);
    if( Th_IsConfigOpen() ){
      g.th1Flags |= TH_STATE_CONFIG;
    }else{
      g.th1Flags &= ~TH_STATE_CONFIG;
    }
  }
}

/*
** Attempts to close the configuration ("user") database.  Optionally, also
** attempts to close the repository.
*/
void Th_CloseConfig(
  int closeRepository
){
  if( g.th1Flags & TH_STATE_CONFIG ){
    db_close_config();
    g.th1Flags &= ~TH_STATE_CONFIG;
  }
  if( closeRepository && (g.th1Flags & TH_STATE_REPOSITORY) ){
    db_close(1);
    g.th1Flags &= ~TH_STATE_REPOSITORY;
  }
}

/*
** Make sure the interpreter has been initialized.  Initialize it if
** it has not been already.
**
** The interpreter is stored in the g.interp global variable.
*/
void Th_FossilInit(void){
void Th_FossilInit(u32 flags){
  int wasInit = 0;
  int needConfig = flags & TH_INIT_NEED_CONFIG;
  int forceReset = flags & TH_INIT_FORCE_RESET;
  int forceTcl = flags & TH_INIT_FORCE_TCL;
  int forceSetup = flags & TH_INIT_FORCE_SETUP;
  int noRepo = flags & TH_INIT_NO_REPO;
  static unsigned int aFlags[] = {0, 1, WIKI_LINKSONLY};
  static int anonFlag = LOGIN_ANON;
  static int zeroInt = 0;
  static struct _Command {
    const char *zName;
    Th_CommandProc xProc;
    void *pContext;
  } aCommand[] = {
    {"anoncap",       hascapCmd,            (void*)&anonFlag},
    {"anycap",        anycapCmd,            0},
    {"artifact",      artifactCmd,          0},
    {"builtin_request_js", builtinRequestJsCmd, 0},
    {"capexpr",       capexprCmd,           0},
    {"captureTh1",    captureTh1Cmd,        0},
    {"cgiHeaderLine", cgiHeaderLineCmd,     0},
    {"checkout",      checkoutCmd,          0},
    {"combobox",      comboboxCmd,          0},
    {"copybtn",       copybtnCmd,           0},
    {"date",          dateCmd,              0},
    {"decorate",      wikiCmd,              (void*)&aFlags[2]},
    {"defHeader",     defHeaderCmd,         0},
    {"dir",           dirCmd,               0},
    {"enable_htmlify",enableHtmlifyCmd,     0},
    {"enable_output", enableOutputCmd,      0},
    {"encode64",      encode64Cmd,          0},
    {"getParameter",  getParameterCmd,      0},
    {"glob_match",    globMatchCmd,         0},
    {"globalState",   globalStateCmd,       0},
    {"linecount",     linecntCmd,           0},
    {"hascap",        hascapCmd,            0},
    {"httpize",       httpizeCmd,           0},
    {"hascap",        hascapCmd,            (void*)&zeroInt},
    {"hasfeature",    hasfeatureCmd,        0},
    {"html",          putsCmd,              (void*)&aFlags[0]},
    {"htmlize",       htmlizeCmd,           0},
    {"date",          dateCmd,              0},
    {"html",          putsCmd,              0},
    {"puts",          putsCmd,       (void*)1},
    {"wiki",          wikiCmd,              0},
    {"http",          httpCmd,              0},
    {"insertCsrf",    insertCsrfCmd,        0},
    {"linecount",     linecntCmd,           0},
    {"markdown",      markdownCmd,          0},
    {"nonce",         nonceCmd,             0},
    {"puts",          putsCmd,              (void*)&aFlags[1]},
    {"query",         queryCmd,             0},
    {"randhex",       randhexCmd,           0},
    {"redirect",      redirectCmd,          0},
    {"regexp",        regexpCmd,            0},
    {"reinitialize",  reinitializeCmd,      0},
    {"render",        renderCmd,            0},
    {"repository",    repositoryCmd,        0},
    {"searchable",    searchableCmd,        0},
    {"setParameter",  setParameterCmd,      0},
    {"setting",       settingCmd,           0},
    {"styleFooter",   styleFooterCmd,       0},
    {"styleHeader",   styleHeaderCmd,       0},
    {"styleScript",   styleScriptCmd,       0},
    {"submenu",       submenuCmd,           0},
    {"tclReady",      tclReadyCmd,          0},
    {"trace",         traceCmd,             0},
    {"stime",         stimeCmd,             0},
    {"unversioned",   unversionedCmd,       0},
    {"utime",         utimeCmd,             0},
    {"verifyCsrf",    verifyCsrfCmd,        0},
    {"verifyLogin",   verifyLoginCmd,       0},
    {"wiki",          wikiCmd,              (void*)&aFlags[0]},
    {0, 0, 0}
  };
  if( g.thTrace ){
    Th_Trace("th1-init 0x%x => 0x%x<br>\n", g.th1Flags, flags);
  }
  if( needConfig ){
    /*
    ** This function uses several settings which may be defined in the
    ** repository and/or the global configuration.  Since the caller
    ** passed a non-zero value for the needConfig parameter, make sure
    ** the necessary database connections are open prior to continuing.
    */
    Th_OpenConfig(!noRepo);
  }
  if( g.interp==0 ){
  if( forceReset || forceTcl || g.interp==0 ){
    int created = 0;
    int i;
    if( g.interp==0 ){
      Th_Vtab *pVtab = 0;
#if defined(TH_MEMDEBUG)
      if( fossil_getenv("TH1_DELETE_INTERP")!=0 ){
        pVtab = &vtab;
        if( g.thTrace ){
          Th_Trace("th1-init MEMDEBUG ENABLED<br>\n");
        }
      }
#endif
    g.interp = Th_CreateInterp(&vtab);
    th_register_language(g.interp);       /* Basic scripting commands. */
    for(i=0; i<sizeof(aCommand)/sizeof(aCommand[0]); i++){
      g.interp = Th_CreateInterp(pVtab);
      created = 1;
    }
    if( forceReset || created ){
      th_register_language(g.interp);     /* Basic scripting commands. */
    }
#ifdef FOSSIL_ENABLE_TCL
    if( forceTcl || fossil_getenv("TH1_ENABLE_TCL")!=0 ||
        db_get_boolean("tcl", 0) ){
      if( !g.tcl.setup ){
        g.tcl.setup = db_get("tcl-setup", 0); /* Grab Tcl setup script. */
      }
      th_register_tcl(g.interp, &g.tcl);  /* Tcl integration commands. */
    }
#endif
    for(i=0; i<count(aCommand); i++){
      if ( !aCommand[i].zName || !aCommand[i].xProc ) continue;
      Th_CreateCommand(g.interp, aCommand[i].zName, aCommand[i].xProc,
                       aCommand[i].pContext, 0);
    }
  }else{
    wasInit = 1;
  }
  if( forceSetup || !wasInit ){
    int rc = TH_OK;
    if( !g.th1Setup ){
      g.th1Setup = db_get("th1-setup", 0); /* Grab TH1 setup script. */
    }
    if( g.th1Setup ){
      rc = Th_Eval(g.interp, 0, g.th1Setup, -1);
      if( rc==TH_ERROR ){
        int nResult = 0;
        char *zResult = (char*)Th_GetResult(g.interp, &nResult);
        sendError(0,zResult, nResult, 0);
      }
    }
    if( g.thTrace ){
      Th_Trace("th1-setup {%h} => %h<br>\n", g.th1Setup,
               Th_ReturnCodeName(rc, 0));
    }
  }
  g.th1Flags &= ~TH_INIT_MASK;
  g.th1Flags |= (flags & TH_INIT_MASK);
}

/*
** Store a string value in a variable in the interpreter if the variable
** does not already exist.
*/
void Th_MaybeStore(const char *zName, const char *zValue){
  Th_FossilInit(TH_INIT_DEFAULT);
  if( zValue && !Th_ExistsVar(g.interp, zName, -1) ){
    if( g.thTrace ){
      Th_Trace("maybe_set %h {%h}<br>\n", zName, zValue);
    }
    Th_SetVar(g.interp, zName, -1, zValue, strlen(zValue));
  }
}

/*
** Store a string value in a variable in the interpreter.
*/
void Th_Store(const char *zName, const char *zValue){
  Th_FossilInit();
  Th_FossilInit(TH_INIT_DEFAULT);
  if( zValue ){
    if( g.thTrace ){
      Th_Trace("set %h {%h}<br />\n", zName, zValue);
      Th_Trace("set %h {%h}<br>\n", zName, zValue);
    }
    Th_SetVar(g.interp, zName, -1, zValue, strlen(zValue));
  }
}

/*
** Appends an element to a TH1 list value.  This function is called by the
** transfer subsystem; therefore, it must be very careful to avoid doing
** any unnecessary work.  To that end, the TH1 subsystem will not be called
** or initialized if the list pointer is zero (i.e. which will be the case
** when TH1 transfer hooks are disabled).
*/
void Th_AppendToList(
  char **pzList,
  int *pnList,
  const char *zElem,
  int nElem
){
  if( pzList && zElem ){
    Th_FossilInit(TH_INIT_DEFAULT);
    Th_ListAppend(g.interp, pzList, pnList, zElem, nElem);
  }
}

/*
** Stores a list value in the specified TH1 variable using the specified
** array of strings as the source of the element values.
*/
void Th_StoreList(
  const char *zName,
  char **pzList,
  int nList
){
  Th_FossilInit(TH_INIT_DEFAULT);
  if( pzList ){
    char *zValue = 0;
    int nValue = 0;
    int i;
    for(i=0; i<nList; i++){
      Th_ListAppend(g.interp, &zValue, &nValue, pzList[i], -1);
    }
    if( g.thTrace ){
      Th_Trace("set %h {%h}<br>\n", zName, zValue);
    }
    Th_SetVar(g.interp, zName, -1, zValue, nValue);
    Th_Free(g.interp, zValue);
  }
}

/*
** Store an integer value in a variable in the interpreter.
*/
void Th_StoreInt(const char *zName, int iValue){
  Blob value;
  char *zValue;
  Th_FossilInit(TH_INIT_DEFAULT);
  blob_zero(&value);
  blob_appendf(&value, "%d", iValue);
  zValue = blob_str(&value);
  if( g.thTrace ){
    Th_Trace("set %h {%h}<br>\n", zName, zValue);
  }
  Th_SetVar(g.interp, zName, -1, zValue, strlen(zValue));
  blob_reset(&value);
}

/*
** Unset a variable.
*/
void Th_Unstore(const char *zName){
  if( g.interp ){
    Th_UnsetVar(g.interp, (char*)zName, -1);
  }
}

/*
** Retrieve a string value from the interpreter.  If no such
** variable exists, return NULL.
*/
char *Th_Fetch(const char *zName, int *pSize){
  int rc;
  Th_FossilInit();
  Th_FossilInit(TH_INIT_DEFAULT);
  rc = Th_GetVar(g.interp, (char*)zName, -1);
  if( rc==TH_OK ){
    return (char*)Th_GetResult(g.interp, pSize);
  }else{
    return 0;
  }
}
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static int validVarName(const char *z){
  int i = 0;
  int inBracket = 0;
  if( z[0]=='<' ){
    inBracket = 1;
    z++;
  }
  if( z[0]==':' && z[1]==':' && isalpha(z[2]) ){
  if( z[0]==':' && z[1]==':' && fossil_isalpha(z[2]) ){
    z += 3;
    i += 3;
  }else if( isalpha(z[0]) ){
  }else if( fossil_isalpha(z[0]) ){
    z ++;
    i += 1;
  }else{
    return 0;
  }
  while( isalnum(z[0]) || z[0]=='_' ){
  while( fossil_isalnum(z[0]) || z[0]=='_' ){
    z++;
    i++;
  }
  if( inBracket ){
    if( z[0]!='>' ) return 0;
    i += 2;
  }
  return i;
}

#ifdef FOSSIL_ENABLE_TH1_HOOKS
/*
** This function determines if TH1 hooks are enabled for the repository.  It
** may be necessary to open the repository and/or the configuration ("user")
** database from within this function.  Before this function returns, any
** database opened will be closed again.  This is very important because some
** commands do not expect the repository and/or the configuration ("user")
** database to be open prior to their own code doing so.
*/
int Th_AreHooksEnabled(void){
  int rc;
  if( fossil_getenv("TH1_ENABLE_HOOKS")!=0 ){
    return 1;
  }
  Th_OpenConfig(1);
  rc = db_get_boolean("th1-hooks", 0);
  Th_CloseConfig(1);
  return rc;
}

/*
** This function is called by Fossil just prior to dispatching a command.
** Returning a value other than TH_OK from this function (i.e. via an
** evaluated script raising an error or calling [break]/[continue]) will
** cause the actual command execution to be skipped.
*/
int Th_CommandHook(
  const char *zName,
  unsigned int cmdFlags
){
  int rc = TH_OK;
  if( !Th_AreHooksEnabled() ) return rc;
  Th_FossilInit(TH_INIT_HOOK);
  Th_Store("cmd_name", zName);
  Th_StoreList("cmd_args", g.argv, g.argc);
  Th_StoreInt("cmd_flags", cmdFlags);
  rc = Th_Eval(g.interp, 0, "command_hook", -1);
  if( rc==TH_ERROR ){
    int nResult = 0;
    char *zResult = (char*)Th_GetResult(g.interp, &nResult);
    /*
    ** Make sure that the TH1 script error was not caused by a "missing"
    ** command hook handler as that is not actually an error condition.
    */
    if( memcmp(zResult, NO_COMMAND_HOOK_ERROR, nResult)!=0 ){
      sendError(0,zResult, nResult, 0);
    }else{
      /*
      ** There is no command hook handler "installed".  This situation
      ** is NOT actually an error.
      */
      rc = TH_OK;
    }
  }
  /*
  ** If the script returned TH_ERROR (e.g. the "command_hook" TH1 command does
  ** not exist because commands are not being hooked), return TH_OK because we
  ** do not want to skip executing essential commands unless the called command
  ** (i.e. "command_hook") explicitly forbids this by successfully returning
  ** TH_BREAK or TH_CONTINUE.
  */
  if( g.thTrace ){
    Th_Trace("[command_hook {%h}] => %h<br>\n", zName,
             Th_ReturnCodeName(rc, 0));
  }
  /*
  ** Does our call to Th_FossilInit() result in opening a database?  If so,
  ** clean it up now.  This is very important because some commands do not
  ** expect the repository and/or the configuration ("user") database to be
  ** open prior to their own code doing so.
  */
  if( TH_INIT_HOOK & TH_INIT_NEED_CONFIG ) Th_CloseConfig(1);
  return rc;
}

/*
** This function is called by Fossil just after dispatching a command.
** Returning a value other than TH_OK from this function (i.e. via an
** evaluated script raising an error or calling [break]/[continue]) may
** cause an error message to be displayed to the local interactive user.
** Currently, TH1 error messages generated by this function are ignored.
*/
int Th_CommandNotify(
  const char *zName,
  unsigned int cmdFlags
){
  int rc = TH_OK;
  if( !Th_AreHooksEnabled() ) return rc;
  Th_FossilInit(TH_INIT_HOOK);
  Th_Store("cmd_name", zName);
  Th_StoreList("cmd_args", g.argv, g.argc);
  Th_StoreInt("cmd_flags", cmdFlags);
  rc = Th_Eval(g.interp, 0, "command_notify", -1);
  if( g.thTrace ){
    Th_Trace("[command_notify {%h}] => %h<br>\n", zName,
             Th_ReturnCodeName(rc, 0));
  }
  /*
  ** Does our call to Th_FossilInit() result in opening a database?  If so,
  ** clean it up now.  This is very important because some commands do not
  ** expect the repository and/or the configuration ("user") database to be
  ** open prior to their own code doing so.
  */
  if( TH_INIT_HOOK & TH_INIT_NEED_CONFIG ) Th_CloseConfig(1);
  return rc;
}

/*
** This function is called by Fossil just prior to processing a web page.
** Returning a value other than TH_OK from this function (i.e. via an
** evaluated script raising an error or calling [break]/[continue]) will
** cause the actual web page processing to be skipped.
*/
int Th_WebpageHook(
  const char *zName,
  unsigned int cmdFlags
){
  int rc = TH_OK;
  if( !Th_AreHooksEnabled() ) return rc;
  Th_FossilInit(TH_INIT_HOOK);
  Th_Store("web_name", zName);
  Th_StoreList("web_args", g.argv, g.argc);
  Th_StoreInt("web_flags", cmdFlags);
  rc = Th_Eval(g.interp, 0, "webpage_hook", -1);
  if( rc==TH_ERROR ){
    int nResult = 0;
    char *zResult = (char*)Th_GetResult(g.interp, &nResult);
    /*
    ** Make sure that the TH1 script error was not caused by a "missing"
    ** webpage hook handler as that is not actually an error condition.
    */
    if( memcmp(zResult, NO_WEBPAGE_HOOK_ERROR, nResult)!=0 ){
      sendError(0,zResult, nResult, 1);
    }else{
      /*
      ** There is no webpage hook handler "installed".  This situation
      ** is NOT actually an error.
      */
      rc = TH_OK;
    }
  }
  /*
  ** If the script returned TH_ERROR (e.g. the "webpage_hook" TH1 command does
  ** not exist because commands are not being hooked), return TH_OK because we
  ** do not want to skip processing essential web pages unless the called
  ** command (i.e. "webpage_hook") explicitly forbids this by successfully
  ** returning TH_BREAK or TH_CONTINUE.
  */
  if( g.thTrace ){
    Th_Trace("[webpage_hook {%h}] => %h<br>\n", zName,
             Th_ReturnCodeName(rc, 0));
  }
  /*
  ** Does our call to Th_FossilInit() result in opening a database?  If so,
  ** clean it up now.  This is very important because some commands do not
  ** expect the repository and/or the configuration ("user") database to be
  ** open prior to their own code doing so.
  */
  if( TH_INIT_HOOK & TH_INIT_NEED_CONFIG ) Th_CloseConfig(1);
  return rc;
}

/*
** This function is called by Fossil just after processing a web page.
** Returning a value other than TH_OK from this function (i.e. via an
** evaluated script raising an error or calling [break]/[continue]) may
** cause an error message to be displayed to the remote user.
** Currently, TH1 error messages generated by this function are ignored.
*/
int Th_WebpageNotify(
  const char *zName,
  unsigned int cmdFlags
){
  int rc = TH_OK;
  if( !Th_AreHooksEnabled() ) return rc;
  Th_FossilInit(TH_INIT_HOOK);
  Th_Store("web_name", zName);
  Th_StoreList("web_args", g.argv, g.argc);
  Th_StoreInt("web_flags", cmdFlags);
  rc = Th_Eval(g.interp, 0, "webpage_notify", -1);
  if( g.thTrace ){
    Th_Trace("[webpage_notify {%h}] => %h<br>\n", zName,
             Th_ReturnCodeName(rc, 0));
  }
  /*
  ** Does our call to Th_FossilInit() result in opening a database?  If so,
  ** clean it up now.  This is very important because some commands do not
  ** expect the repository and/or the configuration ("user") database to be
  ** open prior to their own code doing so.
  */
  if( TH_INIT_HOOK & TH_INIT_NEED_CONFIG ) Th_CloseConfig(1);
  return rc;
}
#endif


#ifdef FOSSIL_ENABLE_TH1_DOCS
/*
** This function determines if TH1 docs are enabled for the repository.
*/
int Th_AreDocsEnabled(void){
  if( fossil_getenv("TH1_ENABLE_DOCS")!=0 ){
    return 1;
  }
  return db_get_boolean("th1-docs", 0);
}
#endif


#if INTERFACE
/*
** Flags for use with Th_RenderToBlob. These must not overlap with
** TH_INIT_MASK.
*/
#define TH_R2B_MASK    ((u32)0x0f000)
#define TH_R2B_NO_VARS ((u32)0x01000) /* Disables eval of $vars and $<vars> */
#endif

/*
** The z[] input contains text mixed with TH1 scripts.
** The TH1 scripts are contained within <th1>...</th1>. 
** TH1 variables are $aaa or $<aaa>.  The first form of
** variable is literal.  The second is run through htmlize
** before being inserted.
**
** This routine processes the template and writes the results
** on either stdout or into CGI.
** If pOut is NULL, this works identically to Th_Render() and sends
** any TH1-generated output to stdin (in CLI mode) or the CGI buffer
** (in CGI mode), else it works just like that function but appends
** any TH1-generated output to the given blob. A bitmask of TH_R2B_xxx
** and/or TH_INIT_xxx flags may be passed as the 3rd argument, or 0
** for default options.  Note that this function necessarily calls
** Th_FossilInit(), which may unset flags used on previous calls
** unless mFlags is explicitly passed in.
*/
int Th_Render(const char *z){
int Th_RenderToBlob(const char *z, Blob * pOut, u32 mFlags){
  int i = 0;
  int n;
  int rc = TH_OK;
  char *zResult;
  Blob * const origOut = Th_SetOutputBlob(pOut);

  assert(0==(TH_R2B_MASK & TH_INIT_MASK) && "init/r2b mask conflict");
  Th_FossilInit();
  Th_FossilInit(mFlags & TH_INIT_MASK);
  while( z[i] ){
    if( 0==(TH_R2B_NO_VARS & mFlags)
    if( z[i]=='$' && (n = validVarName(&z[i+1]))>0 ){
        && z[i]=='$' && (n = validVarName(&z[i+1]))>0 ){
      const char *zVar;
      int nVar;
      int encode = 1;
      sendText(z, i, 0);
      sendText(pOut,z, i, 0);
      if( z[i+1]=='<' ){
        /* Variables of the form $<aaa> */
        /* Variables of the form $<aaa> are html escaped */
        zVar = &z[i+2];
        nVar = n-2;
      }else{
        /* Variables of the form $aaa */
        /* Variables of the form $aaa are output raw */
        zVar = &z[i+1];
        nVar = n;
        encode = 0;
      }
      rc = Th_GetVar(g.interp, (char*)zVar, nVar);
      z += i+1+n;
      i = 0;
      zResult = (char*)Th_GetResult(g.interp, &n);
      sendText((char*)zResult, n, n>nVar);
      sendText(pOut,(char*)zResult, n, encode);
    }else if( z[i]=='<' && isBeginScriptTag(&z[i]) ){
      sendText(z, i, 0);
      sendText(pOut,z, i, 0);
      z += i+5;
      for(i=0; z[i] && (z[i]!='<' || !isEndScriptTag(&z[i])); i++){}
      if( g.thTrace ){
        Th_Trace("render_eval {<pre>%#h</pre>}<br>\n", i, z);
      }
      rc = Th_Eval(g.interp, 0, (const char*)z, i);
      if( g.thTrace ){
        int nTrRes;
        char *zTrRes = (char*)Th_GetResult(g.interp, &nTrRes);
        Th_Trace("[render_eval] => %h {%#h}<br>\n",
                 Th_ReturnCodeName(rc, 0), nTrRes, zTrRes);
      }
      if( rc!=TH_OK ) break;
      z += i;
      if( z[0] ){ z += 6; }
      i = 0;
    }else{
      i++;
    }
  }
  if( rc==TH_ERROR ){
    sendText("<hr><p><font color=\"red\"><b>ERROR: ", -1, 0);
    zResult = (char*)Th_GetResult(g.interp, &n);
    sendText((char*)zResult, n, 1);
    sendError(pOut,zResult, n, 1);
    sendText("</b></font></p>", -1, 0);
  }else{
    sendText(z, i, 0);
    sendText(pOut,z, i, 0);
  }
  Th_SetOutputBlob(origOut);
  return rc;
}

/*
** The z[] input contains text mixed with TH1 scripts.
** The TH1 scripts are contained within <th1>...</th1>.
** TH1 variables are $aaa or $<aaa>.  The first form of
** variable is literal.  The second is run through htmlize
** before being inserted.
**
** This routine processes the template and writes the results to one
** of stdout, CGI, or an internal blob which was set up via a prior
** call to Th_SetOutputBlob().
*/
int Th_Render(const char *z){
  return Th_RenderToBlob(z, pThOut, g.th1Flags)
    /* Maintenance reminder: on most calls to Th_Render(), e.g. for
    ** outputing the site skin, pThOut will be 0, which means that
    ** Th_RenderToBlob() will output directly to the CGI buffer (in
    ** CGI mode) or stdout (in CLI mode). Recursive calls, however,
    ** e.g. via the "render" script function binding, need to use the
    ** pThOut blob in order to avoid out-of-order output if
    ** Th_SetOutputBlob() has been called. If it has not been called,
    ** pThOut will be 0, which will redirect the output to CGI/stdout,
    ** as appropriate. We need to pass on g.th1Flags for the case of
    ** recursive calls, so that, e.g., TH_INIT_NO_ENCODE does not get
    ** inadvertently toggled off by a recursive call.
    */;
}

/*
** COMMAND: test-th-render
**
** Usage: %fossil test-th-render FILE
**
** Read the content of the file named "FILE" as if it were a header or
** footer or ticket rendering script, evaluate it, and show the results
** on standard output.
**
** Options:
**     --cgi                Include a CGI response header in the output
**     --http               Include an HTTP response header in the output
**     --open-config        Open the configuration database
**     --set-anon-caps      Set anonymous login capabilities
**     --set-user-caps      Set user login capabilities
**     --th-trace           Trace TH1 execution (for debugging purposes)
*/
void test_th_render(void){
  int forceCgi, fullHttpReply;
  Blob in;
  Th_InitTraceLog();
  forceCgi = find_option("cgi", 0, 0)!=0;
  fullHttpReply = find_option("http", 0, 0)!=0;
  if( fullHttpReply ) forceCgi = 1;
  if( forceCgi ) Th_ForceCgi(fullHttpReply);
  if( find_option("open-config", 0, 0)!=0 ){
    Th_OpenConfig(1);
  }
  if( find_option("set-anon-caps", 0, 0)!=0 ){
    const char *zCap = fossil_getenv("TH1_TEST_ANON_CAPS");
    login_set_capabilities(zCap ? zCap : "sx", LOGIN_ANON);
    g.useLocalauth = 1;
  }
  if( find_option("set-user-caps", 0, 0)!=0 ){
    const char *zCap = fossil_getenv("TH1_TEST_USER_CAPS");
    login_set_capabilities(zCap ? zCap : "sx", 0);
    g.useLocalauth = 1;
  }
  verify_all_options();
  if( g.argc<3 ){
    usage("FILE");
  }
  blob_zero(&in);
  blob_read_from_file(&in, g.argv[2]);
  blob_read_from_file(&in, g.argv[2], ExtFILE);
  Th_Render(blob_str(&in));
  Th_PrintTraceLog();
  if( forceCgi ) cgi_reply();
}

/*
** COMMAND: test-th-eval
**
** Usage: %fossil test-th-eval SCRIPT
**
** Evaluate SCRIPT as if it were a header or footer or ticket rendering
** script and show the results on standard output. SCRIPT may be either
** a filename or a string of th1 script code.
**
** Options:
**     --cgi                Include a CGI response header in the output
**     --http               Include an HTTP response header in the output
**     --open-config        Open the configuration database
**     --set-anon-caps      Set anonymous login capabilities
**     --set-user-caps      Set user login capabilities
**     --th-trace           Trace TH1 execution (for debugging purposes)
*/
void test_th_eval(void){
  int rc;
  const char *zRc;
  const char *zCode = 0;
  int forceCgi, fullHttpReply;
  Blob code = empty_blob;
  Th_InitTraceLog();
  forceCgi = find_option("cgi", 0, 0)!=0;
  fullHttpReply = find_option("http", 0, 0)!=0;
  if( fullHttpReply ) forceCgi = 1;
  if( forceCgi ) Th_ForceCgi(fullHttpReply);
  if( find_option("open-config", 0, 0)!=0 ){
    Th_OpenConfig(1);
  }
  if( find_option("set-anon-caps", 0, 0)!=0 ){
    const char *zCap = fossil_getenv("TH1_TEST_ANON_CAPS");
    login_set_capabilities(zCap ? zCap : "sx", LOGIN_ANON);
    g.useLocalauth = 1;
  }
  if( find_option("set-user-caps", 0, 0)!=0 ){
    const char *zCap = fossil_getenv("TH1_TEST_USER_CAPS");
    login_set_capabilities(zCap ? zCap : "sx", 0);
    g.useLocalauth = 1;
  }
  verify_all_options();
  if( g.argc!=3 ){
    usage("script");
  }
  if(file_isfile(g.argv[2], ExtFILE)){
    blob_read_from_file(&code, g.argv[2], ExtFILE);
    zCode = blob_str(&code);
  }else{
    zCode = g.argv[2];
  }
  Th_FossilInit(TH_INIT_DEFAULT);
  rc = Th_Eval(g.interp, 0, zCode, -1);
  zRc = Th_ReturnCodeName(rc, 1);
  fossil_print("%s%s%s\n", zRc, zRc ? ": " : "", Th_GetResult(g.interp, 0));
  Th_PrintTraceLog();
  blob_reset(&code);
  if( forceCgi ) cgi_reply();
}

/*
** COMMAND: test-th-source
**
** Usage: %fossil test-th-source FILE
**
** Evaluate the contents of the file named "FILE" as if it were a header
** or footer or ticket rendering script and show the results on standard
** output.
**
** Options:
**     --cgi                Include a CGI response header in the output
**     --http               Include an HTTP response header in the output
**     --open-config        Open the configuration database
**     --set-anon-caps      Set anonymous login capabilities
**     --set-user-caps      Set user login capabilities
**     --th-trace           Trace TH1 execution (for debugging purposes)
**     --no-print-result    Do not output the final result. Use if it
**                          interferes with script output.
*/
void test_th_source(void){
  int rc;
  const char *zRc;
  int forceCgi, fullHttpReply, fNoPrintRc;
  Blob in;
  Th_InitTraceLog();
  forceCgi = find_option("cgi", 0, 0)!=0;
  fullHttpReply = find_option("http", 0, 0)!=0;
  fNoPrintRc = find_option("no-print-result",0,0)!=0;
  if( fullHttpReply ) forceCgi = 1;
  if( forceCgi ) Th_ForceCgi(fullHttpReply);
  if( find_option("open-config", 0, 0)!=0 ){
    Th_OpenConfig(1);
  }
  if( find_option("set-anon-caps", 0, 0)!=0 ){
    const char *zCap = fossil_getenv("TH1_TEST_ANON_CAPS");
    login_set_capabilities(zCap ? zCap : "sx", LOGIN_ANON);
    g.useLocalauth = 1;
  }
  if( find_option("set-user-caps", 0, 0)!=0 ){
    const char *zCap = fossil_getenv("TH1_TEST_USER_CAPS");
    login_set_capabilities(zCap ? zCap : "sx", 0);
    g.useLocalauth = 1;
  }
  verify_all_options();
  if( g.argc!=3 ){
    usage("file");
  }
  blob_zero(&in);
  blob_read_from_file(&in, g.argv[2], ExtFILE);
  Th_FossilInit(TH_INIT_DEFAULT);
  rc = Th_Eval(g.interp, 0, blob_str(&in), -1);
  zRc = Th_ReturnCodeName(rc, 1);
  if(0==fNoPrintRc){
    fossil_print("%s%s%s\n", zRc, zRc ? ": " : "",
                 Th_GetResult(g.interp, 0));
  }
  Th_PrintTraceLog();
  if( forceCgi ) cgi_reply();
}

#ifdef FOSSIL_ENABLE_TH1_HOOKS
/*
** COMMAND: test-th-hook
**
** Usage: %fossil test-th-hook TYPE NAME FLAGS
**
** Evaluates the TH1 script configured for the pre-operation (i.e. a command
** or web page) "hook" or post-operation "notification".  The results of the
** script evaluation, if any, will be printed to the standard output channel.
** The NAME argument must be the name of a command or web page; however, it
** does not necessarily have to be a command or web page that is normally
** recognized by Fossil.  The FLAGS argument will be used to set the value
** of the "cmd_flags" and/or "web_flags" TH1 variables, if applicable.  The
** TYPE argument must be one of the following:
**
**     cmdhook              Executes the TH1 procedure [command_hook], after
**                          setting the TH1 variables "cmd_name", "cmd_args",
**                          and "cmd_flags" to appropriate values.
**
**     cmdnotify            Executes the TH1 procedure [command_notify], after
**                          setting the TH1 variables "cmd_name", "cmd_args",
**                          and "cmd_flags" to appropriate values.
**
**     webhook              Executes the TH1 procedure [webpage_hook], after
**                          setting the TH1 variables "web_name", "web_args",
**                          and "web_flags" to appropriate values.
**
**     webnotify            Executes the TH1 procedure [webpage_notify], after
**                          setting the TH1 variables "web_name", "web_args",
**                          and "web_flags" to appropriate values.
**
** Options:
**     --cgi                Include a CGI response header in the output
**     --http               Include an HTTP response header in the output
**     --th-trace           Trace TH1 execution (for debugging purposes)
*/
void test_th_hook(void){
  int rc = TH_OK;
  int nResult = 0;
  char *zResult = 0;
  int forceCgi, fullHttpReply;
  Th_InitTraceLog();
  forceCgi = find_option("cgi", 0, 0)!=0;
  fullHttpReply = find_option("http", 0, 0)!=0;
  if( fullHttpReply ) forceCgi = 1;
  if( forceCgi ) Th_ForceCgi(fullHttpReply);
  verify_all_options();
  if( g.argc<5 ){
    usage("TYPE NAME FLAGS");
  }
  if( fossil_stricmp(g.argv[2], "cmdhook")==0 ){
    rc = Th_CommandHook(g.argv[3], (unsigned int)atoi(g.argv[4]));
  }else if( fossil_stricmp(g.argv[2], "cmdnotify")==0 ){
    rc = Th_CommandNotify(g.argv[3], (unsigned int)atoi(g.argv[4]));
  }else if( fossil_stricmp(g.argv[2], "webhook")==0 ){
    rc = Th_WebpageHook(g.argv[3], (unsigned int)atoi(g.argv[4]));
  }else if( fossil_stricmp(g.argv[2], "webnotify")==0 ){
    rc = Th_WebpageNotify(g.argv[3], (unsigned int)atoi(g.argv[4]));
  }else{
    fossil_fatal("Unknown TH1 hook %s", g.argv[2]);
  }
  if( g.interp ){
    zResult = (char*)Th_GetResult(g.interp, &nResult);
  }
  sendText(0,"RESULT (", -1, 0);
  sendText(0,Th_ReturnCodeName(rc, 0), -1, 0);
  sendText(0,")", -1, 0);
  if( zResult && nResult>0 ){
    sendText(0,": ", -1, 0);
    sendText(0,zResult, nResult, 0);
  }
  sendText(0,"\n", -1, 0);
  Th_PrintTraceLog();
  if( forceCgi ) cgi_reply();
}
#endif
Added src/th_tcl.c.



















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2011 D. Richard Hipp
** Copyright (c) 2011 Joe Mistachkin
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to bridge the TH1 and Tcl scripting languages.
*/
#include "config.h"

#ifdef FOSSIL_ENABLE_TCL

#include "sqlite3.h"
#include "th.h"
#include "tcl.h"

/*
** This macro is used to verify that the header version of Tcl meets some
** minimum requirement.
*/
#define MINIMUM_TCL_VERSION(major, minor) \
  ((TCL_MAJOR_VERSION > (major)) || \
   ((TCL_MAJOR_VERSION == (major)) && (TCL_MINOR_VERSION >= (minor))))

/*
** These macros are designed to reduce the redundant code required to marshal
** arguments from TH1 to Tcl.
*/
#define USE_ARGV_TO_OBJV() \
  int objc;                \
  Tcl_Obj **objv;          \
  int obji;

#define COPY_ARGV_TO_OBJV()                                         \
  objc = argc-1;                                                    \
  objv = (Tcl_Obj **)ckalloc((unsigned)(objc * sizeof(Tcl_Obj *))); \
  for(obji=1; obji<argc; obji++){                                   \
    objv[obji-1] = Tcl_NewStringObj(argv[obji], argl[obji]);        \
    Tcl_IncrRefCount(objv[obji-1]);                                 \
  }

#define FREE_ARGV_TO_OBJV()         \
  for(obji=1; obji<argc; obji++){   \
    Tcl_DecrRefCount(objv[obji-1]); \
    objv[obji-1] = 0;               \
  }                                 \
  ckfree((char *)objv);             \
  objv = 0;

/*
** Fetch the Tcl interpreter from the specified void pointer, cast to a Tcl
** context.
*/
#define GET_CTX_TCL_INTERP(ctx) \
  ((struct TclContext *)(ctx))->interp

/*
** Fetch the (logically boolean) value from the specified void pointer that
** indicates whether or not we can/should use direct objProc calls.
*/
#define GET_CTX_TCL_USEOBJPROC(ctx) \
  ((struct TclContext *)(ctx))->useObjProc

/*
** This is the name of an environment variable that may refer to a Tcl library
** directory or file name.  If this environment variable is set [to anything],
** its value will be used when searching for a Tcl library to load.
*/
#ifndef TCL_PATH_ENV_VAR_NAME
#  define TCL_PATH_ENV_VAR_NAME  "FOSSIL_TCL_PATH"
#endif

/*
** Define the Tcl shared library name, some exported function names, and some
** cross-platform macros for use with the Tcl stubs mechanism, when enabled.
*/
#if defined(USE_TCL_STUBS)
#  if defined(_WIN32)
#    if !defined(WIN32_LEAN_AND_MEAN)
#      define WIN32_LEAN_AND_MEAN
#    endif
#    if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0502)
#      undef _WIN32_WINNT
#      define _WIN32_WINNT 0x0502 /* SetDllDirectory, Windows XP SP2 */
#    endif
#    include <windows.h>
#    ifndef TCL_DIRECTORY_SEP
#      define TCL_DIRECTORY_SEP '\\'
#    endif
#    ifndef TCL_LIBRARY_NAME
#      define TCL_LIBRARY_NAME "tcl87.dll\0"
#    endif
#    ifndef TCL_MINOR_OFFSET
#      define TCL_MINOR_OFFSET (4)
#    endif
#    ifndef dlopen
#      define dlopen(a,b) (void *)LoadLibrary((a))
#    endif
#    ifndef dlsym
#      define dlsym(a,b) GetProcAddress((HANDLE)(a),(b))
#    endif
#    ifndef dlclose
#      define dlclose(a) FreeLibrary((HANDLE)(a))
#    endif
#  else
#    include <dlfcn.h>
#    ifndef TCL_DIRECTORY_SEP
#      define TCL_DIRECTORY_SEP '/'
#    endif
#    if defined(__CYGWIN__)
#      ifndef TCL_LIBRARY_NAME
#        define TCL_LIBRARY_NAME "libtcl8.7.dll\0"
#      endif
#      ifndef TCL_MINOR_OFFSET
#        define TCL_MINOR_OFFSET (8)
#      endif
#    elif defined(__APPLE__)
#      ifndef TCL_LIBRARY_NAME
#        define TCL_LIBRARY_NAME "libtcl8.7.dylib\0"
#      endif
#      ifndef TCL_MINOR_OFFSET
#        define TCL_MINOR_OFFSET (8)
#      endif
#    elif defined(__FreeBSD__)
#      ifndef TCL_LIBRARY_NAME
#        define TCL_LIBRARY_NAME "libtcl87.so\0"
#      endif
#      ifndef TCL_MINOR_OFFSET
#        define TCL_MINOR_OFFSET (7)
#      endif
#    else
#      ifndef TCL_LIBRARY_NAME
#        define TCL_LIBRARY_NAME "libtcl8.7.so\0"
#      endif
#      ifndef TCL_MINOR_OFFSET
#        define TCL_MINOR_OFFSET (8)
#      endif
#    endif /* defined(__CYGWIN__) */
#  endif /* defined(_WIN32) */
#  ifndef TCL_FINDEXECUTABLE_NAME
#    define TCL_FINDEXECUTABLE_NAME "_Tcl_FindExecutable\0"
#  endif
#  ifndef TCL_CREATEINTERP_NAME
#    define TCL_CREATEINTERP_NAME "_Tcl_CreateInterp\0"
#  endif
#  ifndef TCL_DELETEINTERP_NAME
#    define TCL_DELETEINTERP_NAME "_Tcl_DeleteInterp\0"
#  endif
#  ifndef TCL_FINALIZE_NAME
#    define TCL_FINALIZE_NAME "_Tcl_Finalize\0"
#  endif
#endif /* defined(USE_TCL_STUBS) */

/*
** If this constant is defined to non-zero, the Win32 SetDllDirectory function
** will be used during the Tcl library loading process if the path environment
** variable for Tcl was set.
*/
#ifndef TCL_USE_SET_DLL_DIRECTORY
#  if defined(_WIN32) && defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0502)
#    define TCL_USE_SET_DLL_DIRECTORY (1)
#  else
#    define TCL_USE_SET_DLL_DIRECTORY (0)
#  endif
#endif /* TCL_USE_SET_DLL_DIRECTORY */

/*
** The function types for Tcl_FindExecutable and Tcl_CreateInterp are needed
** when the Tcl library is being loaded dynamically by a stubs-enabled
** application (i.e. the inverse of using a stubs-enabled package).  These are
** the only Tcl API functions that MUST be called prior to being able to call
** Tcl_InitStubs (i.e. because it requires a Tcl interpreter).  For complete
** cleanup if the Tcl stubs initialization fails somehow, the Tcl_DeleteInterp
** and Tcl_Finalize function types are also required.
*/
typedef void (tcl_FindExecutableProc) (const char *);
typedef Tcl_Interp *(tcl_CreateInterpProc) (void);
typedef void (tcl_DeleteInterpProc) (Tcl_Interp *);
typedef void (tcl_FinalizeProc) (void);

/*
** The function types for the "hook" functions to be called before and after a
** TH1 command makes a call to evaluate a Tcl script.  If the "pre" function
** returns anything but TH_OK, then evaluation of the Tcl script is skipped and
** that value is used as the return code.  If the "post" function returns
** anything other than its rc argument, that will become the new return code
** for the command.
*/
typedef int (tcl_NotifyProc) (
  void *pContext,    /* The context for this notification. */
  Th_Interp *interp, /* The TH1 interpreter being used. */
  void *ctx,         /* The original TH1 command context. */
  int argc,          /* Number of arguments for the TH1 command. */
  const char **argv, /* Array of arguments for the TH1 command. */
  int *argl,         /* Array of lengths for the TH1 command arguments. */
  int rc             /* Recommended notification return value. */
);

/*
** Are we using our own private implementation of the Tcl stubs mechanism?  If
** this is enabled, it prevents the user from having to link against the Tcl
** stubs library for the target platform, which may not be readily available.
*/
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
/*
** HACK: Using some preprocessor magic and a private static variable, redirect
**       the Tcl API calls [found within this file] to the function pointers
**       that will be contained in our private Tcl stubs table.  This takes
**       advantage of the fact that the Tcl headers always define the Tcl API
**       functions in terms of the "tclStubsPtr" variable when the define
**       USE_TCL_STUBS is present during compilation.
*/
#define tclStubsPtr privateTclStubsPtr
static const TclStubs *tclStubsPtr = NULL;

/*
** Create a Tcl interpreter structure that mirrors just enough fields to get
** it up and running successfully with our private implementation of the Tcl
** stubs mechanism.
*/
struct PrivateTclInterp {
  char *result;
  Tcl_FreeProc *freeProc;
  int errorLine;
  const struct TclStubs *stubTable;
};

/*
** Fossil can now be compiled without linking to the actual Tcl stubs library.
** In that case, this function will be used to perform those steps that would
** normally be performed within the Tcl stubs library.
*/
static int initTclStubs(
  Th_Interp *interp,
  Tcl_Interp *tclInterp
){
  tclStubsPtr = ((struct PrivateTclInterp *)tclInterp)->stubTable;
  if( !tclStubsPtr || (tclStubsPtr->magic!=TCL_STUB_MAGIC) ){
    Th_ErrorMessage(interp,
        "could not initialize Tcl stubs: incompatible mechanism",
        (const char *)"", 0);
    return TH_ERROR;
  }
  /* NOTE: At this point, the Tcl API functions should be available. */
  if( Tcl_PkgRequireEx(tclInterp, "Tcl", "8.4", 0, (void *)&tclStubsPtr)==0 ){
    Th_ErrorMessage(interp,
        "could not initialize Tcl stubs: incompatible version",
        (const char *)"", 0);
    return TH_ERROR;
  }
  return TH_OK;
}
#endif /* defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS) */

/*
** Is the loaded version of Tcl one where querying and/or calling the objProc
** for a command does not work for some reason?  The following special cases
** are currently handled by this function:
**
** 1. All versions of Tcl 8.4 have a bug that causes a crash when calling into
**    the Tcl_GetCommandFromObj function via stubs (i.e. the stubs table entry
**    is NULL).
**
** 2. Various beta builds of Tcl 8.6, namely 1 and 2, have an NRE-specific bug
**    in Tcl_EvalObjCmd (SF bug #3399564) that cause a panic when calling into
**    the objProc directly.
**
** For both of the above cases, the Tcl_EvalObjv function must be used instead
** of the more direct route of querying and calling the objProc directly.
*/
static int canUseObjProc(){
  int major = -1, minor = -1, patchLevel = -1, type = -1;

  Tcl_GetVersion(&major, &minor, &patchLevel, &type);
  if( major<0 || minor<0 || patchLevel<0 || type<0 ){
    return 0; /* NOTE: Invalid version info, assume bad. */
  }
  if( major==8 && minor==4 ){
    return 0; /* NOTE: Disabled on Tcl 8.4, missing public API. */
  }
  if( major==8 && minor==6 && type==TCL_BETA_RELEASE && patchLevel<3 ){
    return 0; /* NOTE: Disabled on Tcl 8.6b1/b2, SF bug #3399564. */
  }
  return 1;   /* NOTE: For all other cases, assume good. */
}

/*
** Is the loaded version of Tcl one where TIP #285 (asynchronous script
** cancellation) is available?  This should return non-zero only for Tcl
** 8.6 and higher.
*/
static int canUseTip285(){
#if MINIMUM_TCL_VERSION(8, 6)
  int major = -1, minor = -1, patchLevel = -1, type = -1;

  Tcl_GetVersion(&major, &minor, &patchLevel, &type);
  if( major<0 || minor<0 || patchLevel<0 || type<0 ){
    return 0; /* NOTE: Invalid version info, assume bad. */
  }
  return (major>8 || (major==8 && minor>=6));
#else
  return 0;
#endif
}

/*
** Creates and initializes a Tcl interpreter for use with the specified TH1
** interpreter.  Stores the created Tcl interpreter in the Tcl context supplied
** by the caller.  This must be declared here because quite a few functions in
** this file need to use it before it can be defined.
*/
static int createTclInterp(Th_Interp *interp, void *pContext);

/*
** Returns the TH1 return code corresponding to the specified Tcl
** return code.
*/
static int getTh1ReturnCode(
  int rc /* The Tcl return code value to convert. */
){
  switch( rc ){
    case /*0*/ TCL_OK:       return /*0*/ TH_OK;
    case /*1*/ TCL_ERROR:    return /*1*/ TH_ERROR;
    case /*2*/ TCL_RETURN:   return /*3*/ TH_RETURN;
    case /*3*/ TCL_BREAK:    return /*2*/ TH_BREAK;
    case /*4*/ TCL_CONTINUE: return /*4*/ TH_CONTINUE;
    default /*?*/:           return /*?*/ rc;
  }
}

/*
** Returns the Tcl return code corresponding to the specified TH1
** return code.
*/
static int getTclReturnCode(
  int rc /* The TH1 return code value to convert. */
){
  switch( rc ){
    case /*0*/ TH_OK:       return /*0*/ TCL_OK;
    case /*1*/ TH_ERROR:    return /*1*/ TCL_ERROR;
    case /*2*/ TH_BREAK:    return /*3*/ TCL_BREAK;
    case /*3*/ TH_RETURN:   return /*2*/ TCL_RETURN;
    case /*4*/ TH_CONTINUE: return /*4*/ TCL_CONTINUE;
    default /*?*/:          return /*?*/ rc;
  }
}

/*
** Returns a name for a Tcl return code.
*/
static const char *getTclReturnCodeName(
  int rc,
  int nullIfOk
){
  static char zRc[TCL_INTEGER_SPACE + 17]; /* "Tcl return code\0" */

  switch( rc ){
    case TCL_OK:       return nullIfOk ? 0 : "TCL_OK";
    case TCL_ERROR:    return "TCL_ERROR";
    case TCL_RETURN:   return "TCL_RETURN";
    case TCL_BREAK:    return "TCL_BREAK";
    case TCL_CONTINUE: return "TCL_CONTINUE";
    default: {
      sqlite3_snprintf(sizeof(zRc), zRc, "Tcl return code %d", rc);
    }
  }
  return zRc;
}

/*
** Returns the Tcl interpreter result as a string with the associated length.
** If the Tcl interpreter or the Tcl result are NULL, the length will be 0.
** If the length pointer is NULL, the length will not be stored.
*/
static char *getTclResult(
  Tcl_Interp *pInterp,
  int *pN
){
  Tcl_Obj *resultPtr;

  if( !pInterp ){ /* This should not happen. */
    if( pN ) *pN = 0;
    return 0;
  }
  resultPtr = Tcl_GetObjResult(pInterp);
  if( !resultPtr ){ /* This should not happen either? */
    if( pN ) *pN = 0;
    return 0;
  }
  return Tcl_GetStringFromObj(resultPtr, pN);
}

/*
** Tcl context information used by TH1.  This structure definition has been
** copied from and should be kept in sync with the one in "main.c".
*/
struct TclContext {
  int argc;           /* Number of original arguments. */
  char **argv;        /* Full copy of the original arguments. */
  void *hLibrary;     /* The Tcl library module handle. */
  tcl_FindExecutableProc *xFindExecutable; /* Tcl_FindExecutable() pointer. */
  tcl_CreateInterpProc *xCreateInterp;     /* Tcl_CreateInterp() pointer. */
  tcl_DeleteInterpProc *xDeleteInterp;     /* Tcl_DeleteInterp() pointer. */
  tcl_FinalizeProc *xFinalize;             /* Tcl_Finalize() pointer. */
  Tcl_Interp *interp; /* The on-demand created Tcl interpreter. */
  int useObjProc;     /* Non-zero if an objProc can be called directly. */
  int useTip285;      /* Non-zero if TIP #285 is available. */
  const char *setup;  /* The optional Tcl setup script. */
  tcl_NotifyProc *xPreEval;  /* Optional, called before Tcl_Eval*(). */
  void *pPreContext;         /* Optional, provided to xPreEval(). */
  tcl_NotifyProc *xPostEval; /* Optional, called after Tcl_Eval*(). */
  void *pPostContext;        /* Optional, provided to xPostEval(). */
};

/*
** This function calls the configured xPreEval or xPostEval functions, if any.
** May have arbitrary side-effects.  This function returns the result of the
** called notification function or the value of the rc argument if there is no
** notification function configured.
*/
static int notifyPreOrPostEval(
  int bIsPost,
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl,
  int rc
){
  struct TclContext *tclContext = (struct TclContext *)ctx;
  tcl_NotifyProc *xNotifyProc;

  if( !tclContext ){
    Th_ErrorMessage(interp,
        "invalid Tcl context", (const char *)"", 0);
    return TH_ERROR;
  }
  xNotifyProc = bIsPost ? tclContext->xPostEval : tclContext->xPreEval;
  if( xNotifyProc ){
    rc = xNotifyProc(bIsPost ?
        tclContext->pPostContext : tclContext->pPreContext,
        interp, ctx, argc, argv, argl, rc);
  }
  return rc;
}

/*
** TH1 command: tclEval arg ?arg ...?
**
** Evaluates the Tcl script and returns its result verbatim.  If a Tcl script
** error is generated, it will be transformed into a TH1 script error.  The
** Tcl interpreter will be created automatically if it has not been already.
*/
static int tclEval_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  Tcl_Interp *tclInterp;
  Tcl_Obj *objPtr;
  int rc = TH_OK;
  int nResult;
  const char *zResult;

  if( createTclInterp(interp, ctx)!=TH_OK ){
    return TH_ERROR;
  }
  if( argc<2 ){
    return Th_WrongNumArgs(interp, "tclEval arg ?arg ...?");
  }
  tclInterp = GET_CTX_TCL_INTERP(ctx);
  if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
    Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
    return TH_ERROR;
  }
  rc = notifyPreOrPostEval(0, interp, ctx, argc, argv, argl, rc);
  if( rc!=TH_OK ){
    return rc;
  }
  Tcl_Preserve((ClientData)tclInterp);
  if( argc==2 ){
    objPtr = Tcl_NewStringObj(argv[1], argl[1]);
    Tcl_IncrRefCount(objPtr);
    rc = Tcl_EvalObjEx(tclInterp, objPtr, 0);
    Tcl_DecrRefCount(objPtr); objPtr = 0;
  }else{
    USE_ARGV_TO_OBJV();
    COPY_ARGV_TO_OBJV();
    objPtr = Tcl_ConcatObj(objc, objv);
    Tcl_IncrRefCount(objPtr);
    rc = Tcl_EvalObjEx(tclInterp, objPtr, 0);
    Tcl_DecrRefCount(objPtr); objPtr = 0;
    FREE_ARGV_TO_OBJV();
  }
  zResult = getTclResult(tclInterp, &nResult);
  Th_SetResult(interp, zResult, nResult);
  Tcl_Release((ClientData)tclInterp);
  rc = notifyPreOrPostEval(1, interp, ctx, argc, argv, argl,
                           getTh1ReturnCode(rc));
  return rc;
}

/*
** TH1 command: tclExpr arg ?arg ...?
**
** Evaluates the Tcl expression and returns its result verbatim.  If a Tcl
** script error is generated, it will be transformed into a TH1 script error.
** The Tcl interpreter will be created automatically if it has not been
** already.
*/
static int tclExpr_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  Tcl_Interp *tclInterp;
  Tcl_Obj *objPtr;
  Tcl_Obj *resultObjPtr;
  int rc = TH_OK;
  int nResult;
  const char *zResult;

  if( createTclInterp(interp, ctx)!=TH_OK ){
    return TH_ERROR;
  }
  if( argc<2 ){
    return Th_WrongNumArgs(interp, "tclExpr arg ?arg ...?");
  }
  tclInterp = GET_CTX_TCL_INTERP(ctx);
  if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
    Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
    return TH_ERROR;
  }
  rc = notifyPreOrPostEval(0, interp, ctx, argc, argv, argl, rc);
  if( rc!=TH_OK ){
    return rc;
  }
  Tcl_Preserve((ClientData)tclInterp);
  if( argc==2 ){
    objPtr = Tcl_NewStringObj(argv[1], argl[1]);
    Tcl_IncrRefCount(objPtr);
    rc = Tcl_ExprObj(tclInterp, objPtr, &resultObjPtr);
    Tcl_DecrRefCount(objPtr); objPtr = 0;
  }else{
    USE_ARGV_TO_OBJV();
    COPY_ARGV_TO_OBJV();
    objPtr = Tcl_ConcatObj(objc, objv);
    Tcl_IncrRefCount(objPtr);
    rc = Tcl_ExprObj(tclInterp, objPtr, &resultObjPtr);
    Tcl_DecrRefCount(objPtr); objPtr = 0;
    FREE_ARGV_TO_OBJV();
  }
  if( rc==TCL_OK ){
    zResult = Tcl_GetStringFromObj(resultObjPtr, &nResult);
  }else{
    zResult = getTclResult(tclInterp, &nResult);
  }
  Th_SetResult(interp, zResult, nResult);
  if( rc==TCL_OK ){
    Tcl_DecrRefCount(resultObjPtr); resultObjPtr = 0;
  }
  Tcl_Release((ClientData)tclInterp);
  rc = notifyPreOrPostEval(1, interp, ctx, argc, argv, argl,
                           getTh1ReturnCode(rc));
  return rc;
}

/*
** TH1 command: tclInvoke command ?arg ...?
**
** Invokes the Tcl command using the supplied arguments.  No additional
** substitutions are performed on the arguments.  The Tcl interpreter
** will be created automatically if it has not been already.
*/
static int tclInvoke_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  Tcl_Interp *tclInterp;
  int rc = TH_OK;
  int nResult;
  const char *zResult;
  USE_ARGV_TO_OBJV();

  if( createTclInterp(interp, ctx)!=TH_OK ){
    return TH_ERROR;
  }
  if( argc<2 ){
    return Th_WrongNumArgs(interp, "tclInvoke command ?arg ...?");
  }
  tclInterp = GET_CTX_TCL_INTERP(ctx);
  if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
    Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
    return TH_ERROR;
  }
  rc = notifyPreOrPostEval(0, interp, ctx, argc, argv, argl, rc);
  if( rc!=TH_OK ){
    return rc;
  }
  Tcl_Preserve((ClientData)tclInterp);
#if !defined(USE_TCL_EVALOBJV) || !USE_TCL_EVALOBJV
  if( GET_CTX_TCL_USEOBJPROC(ctx) ){
    Tcl_Command command;
    Tcl_CmdInfo cmdInfo;
    Tcl_Obj *objPtr = Tcl_NewStringObj(argv[1], argl[1]);
    Tcl_IncrRefCount(objPtr);
    command = Tcl_GetCommandFromObj(tclInterp, objPtr);
    if( !command || Tcl_GetCommandInfoFromToken(command, &cmdInfo)==0 ){
      Th_ErrorMessage(interp, "Tcl command not found:", argv[1], argl[1]);
      Tcl_DecrRefCount(objPtr); objPtr = 0;
      Tcl_Release((ClientData)tclInterp);
      return TH_ERROR;
    }
    if( !cmdInfo.objProc ){
      Th_ErrorMessage(interp, "cannot invoke Tcl command:", argv[1], argl[1]);
      Tcl_DecrRefCount(objPtr); objPtr = 0;
      Tcl_Release((ClientData)tclInterp);
      return TH_ERROR;
    }
    Tcl_DecrRefCount(objPtr); objPtr = 0;
    COPY_ARGV_TO_OBJV();
    Tcl_ResetResult(tclInterp);
    rc = cmdInfo.objProc(cmdInfo.objClientData, tclInterp, objc, objv);
    FREE_ARGV_TO_OBJV();
  }else
#endif /* !defined(USE_TCL_EVALOBJV) || !USE_TCL_EVALOBJV */
  {
    COPY_ARGV_TO_OBJV();
    rc = Tcl_EvalObjv(tclInterp, objc, objv, 0);
    FREE_ARGV_TO_OBJV();
  }
  zResult = getTclResult(tclInterp, &nResult);
  Th_SetResult(interp, zResult, nResult);
  Tcl_Release((ClientData)tclInterp);
  rc = notifyPreOrPostEval(1, interp, ctx, argc, argv, argl,
                           getTh1ReturnCode(rc));
  return rc;
}

/*
** TH1 command: tclIsSafe
**
** Returns non-zero if the Tcl interpreter is "safe".  The Tcl interpreter
** will be created automatically if it has not been already.
*/
static int tclIsSafe_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  Tcl_Interp *tclInterp;

  if( createTclInterp(interp, ctx)!=TH_OK ){
    return TH_ERROR;
  }
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "tclIsSafe");
  }
  tclInterp = GET_CTX_TCL_INTERP(ctx);
  if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
    Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
    return TH_ERROR;
  }
  Th_SetResultInt(interp, Tcl_IsSafe(tclInterp));
  return TH_OK;
}

/*
** TH1 command: tclMakeSafe
**
** Forces the Tcl interpreter into "safe" mode by removing all "unsafe"
** commands and variables.  This operation cannot be undone.  The Tcl
** interpreter will remain "safe" until the process terminates.
*/
static int tclMakeSafe_command(
  Th_Interp *interp,
  void *ctx,
  int argc,
  const char **argv,
  int *argl
){
  static int registerChans = 1;
  Tcl_Interp *tclInterp;
  int rc = TH_OK;

  if( createTclInterp(interp, ctx)!=TH_OK ){
    return TH_ERROR;
  }
  if( argc!=1 ){
    return Th_WrongNumArgs(interp, "tclMakeSafe");
  }
  tclInterp = GET_CTX_TCL_INTERP(ctx);
  if( !tclInterp || Tcl_InterpDeleted(tclInterp) ){
    Th_ErrorMessage(interp, "invalid Tcl interpreter", (const char *)"", 0);
    return TH_ERROR;
  }
  if( Tcl_IsSafe(tclInterp) ){
    Th_ErrorMessage(interp,
        "Tcl interpreter is already 'safe'", (const char *)"", 0);
    return TH_ERROR;
  }
  if( registerChans ){
    /*
    ** HACK: Prevent the call to Tcl_MakeSafe() from actually closing the
    **       standard channels instead of simply unregistering them from
    **       the Tcl interpreter.  This should only need to be done once
    **       per thread (process?).
    */
    registerChans = 0;
    Tcl_RegisterChannel(NULL, Tcl_GetStdChannel(TCL_STDIN));
    Tcl_RegisterChannel(NULL, Tcl_GetStdChannel(TCL_STDOUT));
    Tcl_RegisterChannel(NULL, Tcl_GetStdChannel(TCL_STDERR));
  }
  Tcl_Preserve((ClientData)tclInterp);
#if ((TCL_MAJOR_VERSION==8 && TCL_MINOR_VERSION>6) \
     || (TCL_MAJOR_VERSION>8))
  /* TCL 8.7+ removes Tcl_MakeSafe():
  ** https://core.tcl-lang.org/tcl/tktview?name=655300
  ** https://core.tcl-lang.org/tips/doc/trunk/tip/624.md
  ** 8.7 has it in the headers but not in the libs.
  */
#  define Tcl_MakeSafe(X) TCL_OK
#endif
  if( Tcl_MakeSafe(tclInterp)!=TCL_OK ){
    int nResult;
    const char *zResult = getTclResult(tclInterp, &nResult);
    Th_ErrorMessage(interp,
        "could not make Tcl interpreter 'safe':", zResult, nResult);
    rc = TH_ERROR;
  }else{
    Th_SetResult(interp, 0, 0);
  }
  Tcl_Release((ClientData)tclInterp);
  return rc;
}

/*
** Tcl command: th1Eval arg
**
** Evaluates the TH1 script and returns its result verbatim.  If a TH1 script
** error is generated, it will be transformed into a Tcl script error.
*/
static int Th1EvalObjCmd(
  ClientData clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *const objv[]
){
  Th_Interp *th1Interp;
  int nArg;
  const char *arg;
  int rc;

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "arg");
    return TCL_ERROR;
  }
  th1Interp = (Th_Interp *)clientData;
  if( !th1Interp ){
    Tcl_AppendResult(interp, "invalid TH1 interpreter", NULL);
    return TCL_ERROR;
  }
  arg = Tcl_GetStringFromObj(objv[1], &nArg);
  rc = Th_Eval(th1Interp, 0, arg, nArg);
  arg = Th_GetResult(th1Interp, &nArg);
  Tcl_SetObjResult(interp, Tcl_NewStringObj(arg, nArg));
  return getTclReturnCode(rc);
}

/*
** Tcl command: th1Expr arg
**
** Evaluates the TH1 expression and returns its result verbatim.  If a TH1
** script error is generated, it will be transformed into a Tcl script error.
*/
static int Th1ExprObjCmd(
  ClientData clientData,
  Tcl_Interp *interp,
  int objc,
  Tcl_Obj *const objv[]
){
  Th_Interp *th1Interp;
  int nArg;
  const char *arg;
  int rc;

  if( objc!=2 ){
    Tcl_WrongNumArgs(interp, 1, objv, "arg");
    return TCL_ERROR;
  }
  th1Interp = (Th_Interp *)clientData;
  if( !th1Interp ){
    Tcl_AppendResult(interp, "invalid TH1 interpreter", NULL);
    return TCL_ERROR;
  }
  arg = Tcl_GetStringFromObj(objv[1], &nArg);
  rc = Th_Expr(th1Interp, arg, nArg);
  arg = Th_GetResult(th1Interp, &nArg);
  Tcl_SetObjResult(interp, Tcl_NewStringObj(arg, nArg));
  return getTclReturnCode(rc);
}

/*
** Array of Tcl integration commands.  Used when adding or removing the Tcl
** integration commands from TH1.
*/
static struct _Command {
  const char *zName;
  Th_CommandProc xProc;
  void *pContext;
} aCommand[] = {
  {"tclEval",     tclEval_command,     0},
  {"tclExpr",     tclExpr_command,     0},
  {"tclInvoke",   tclInvoke_command,   0},
  {"tclIsSafe",   tclIsSafe_command,   0},
  {"tclMakeSafe", tclMakeSafe_command, 0},
  {0, 0, 0}
};

/*
** Called if the Tcl interpreter is deleted.  Removes the Tcl integration
** commands from the TH1 interpreter.
*/
static void Th1DeleteProc(
  ClientData clientData,
  Tcl_Interp *interp
){
  int i;
  Th_Interp *th1Interp = (Th_Interp *)clientData;

  if( !th1Interp ) return;
  /* Remove the Tcl integration commands. */
  for(i=0; i<count(aCommand); i++){
    Th_RenameCommand(th1Interp, aCommand[i].zName, -1, NULL, 0);
  }
}

/*
** When Tcl stubs support is enabled, attempts to dynamically load the Tcl
** shared library and fetch the function pointers necessary to create an
** interpreter and initialize the stubs mechanism; otherwise, simply setup
** the function pointers provided by the caller with the statically linked
** functions.
*/
char *fossil_getenv(const char *zName); /* file.h */
int file_isdir(const char *zPath, int); /* file.h */
#define ExtFILE    0                    /* file.h */
#define RepoFILE   1                    /* file.h */
#define SymFILE    2                    /* file.h */
char *file_dirname(const char *zPath);  /* file.h */
void fossil_free(void *p);              /* util.h */

static int loadTcl(
  Th_Interp *interp,
  void **phLibrary,
  tcl_FindExecutableProc **pxFindExecutable,
  tcl_CreateInterpProc **pxCreateInterp,
  tcl_DeleteInterpProc **pxDeleteInterp,
  tcl_FinalizeProc **pxFinalize
){
#if defined(USE_TCL_STUBS)
  const char *zEnvPath = fossil_getenv(TCL_PATH_ENV_VAR_NAME);
  char aFileName[] = TCL_LIBRARY_NAME;
#endif /* defined(USE_TCL_STUBS) */

  if( !phLibrary || !pxFindExecutable || !pxCreateInterp ||
      !pxDeleteInterp || !pxFinalize ){
    Th_ErrorMessage(interp,
        "invalid Tcl loader argument(s)", (const char *)"", 0);
    return TH_ERROR;
  }
#if defined(USE_TCL_STUBS)
  do {
    char *zFileName;
    void *hLibrary;
    if( !zEnvPath ){
      zFileName = aFileName; /* NOTE: Assume present in PATH. */
    }else if( file_isdir(zEnvPath, ExtFILE)==1 ){
#if TCL_USE_SET_DLL_DIRECTORY
      SetDllDirectory(zEnvPath); /* NOTE: Maybe needed for "zlib1.dll". */
#endif /* TCL_USE_SET_DLL_DIRECTORY */
      /* NOTE: The environment variable contains a directory name. */
      zFileName = sqlite3_mprintf("%s%c%s%c", zEnvPath, TCL_DIRECTORY_SEP,
                                  aFileName, '\0');
    }else{
#if TCL_USE_SET_DLL_DIRECTORY
      char *zDirName = file_dirname(zEnvPath);
      if( zDirName ){
        SetDllDirectory(zDirName); /* NOTE: Maybe needed for "zlib1.dll". */
      }
#endif /* TCL_USE_SET_DLL_DIRECTORY */
      /* NOTE: The environment variable might contain a file name. */
      zFileName = sqlite3_mprintf("%s%c", zEnvPath, '\0');
#if TCL_USE_SET_DLL_DIRECTORY
      if( zDirName ){
        fossil_free(zDirName); zDirName = 0;
      }
#endif /* TCL_USE_SET_DLL_DIRECTORY */
    }
    if( !zFileName ) break;
    hLibrary = dlopen(zFileName, RTLD_NOW | RTLD_GLOBAL);
    /* NOTE: If the file name was allocated, free it now. */
    if( zFileName!=aFileName ){
      sqlite3_free(zFileName); zFileName = 0;
    }
    if( hLibrary ){
      tcl_FindExecutableProc *xFindExecutable;
      tcl_CreateInterpProc *xCreateInterp;
      tcl_DeleteInterpProc *xDeleteInterp;
      tcl_FinalizeProc *xFinalize;
      const char *procName = TCL_FINDEXECUTABLE_NAME;
      xFindExecutable = (tcl_FindExecutableProc *)dlsym(hLibrary, procName+1);
      if( !xFindExecutable ){
        xFindExecutable = (tcl_FindExecutableProc *)dlsym(hLibrary, procName);
      }
      if( !xFindExecutable ){
        Th_ErrorMessage(interp,
            "could not locate Tcl_FindExecutable", (const char *)"", 0);
        dlclose(hLibrary); hLibrary = 0;
        return TH_ERROR;
      }
      procName = TCL_CREATEINTERP_NAME;
      xCreateInterp = (tcl_CreateInterpProc *)dlsym(hLibrary, procName+1);
      if( !xCreateInterp ){
        xCreateInterp = (tcl_CreateInterpProc *)dlsym(hLibrary, procName);
      }
      if( !xCreateInterp ){
        Th_ErrorMessage(interp,
            "could not locate Tcl_CreateInterp", (const char *)"", 0);
        dlclose(hLibrary); hLibrary = 0;
        return TH_ERROR;
      }
      procName = TCL_DELETEINTERP_NAME;
      xDeleteInterp = (tcl_DeleteInterpProc *)dlsym(hLibrary, procName+1);
      if( !xDeleteInterp ){
        xDeleteInterp = (tcl_DeleteInterpProc *)dlsym(hLibrary, procName);
      }
      if( !xDeleteInterp ){
        Th_ErrorMessage(interp,
            "could not locate Tcl_DeleteInterp", (const char *)"", 0);
        dlclose(hLibrary); hLibrary = 0;
        return TH_ERROR;
      }
      procName = TCL_FINALIZE_NAME;
      xFinalize = (tcl_FinalizeProc *)dlsym(hLibrary, procName+1);
      if( !xFinalize ){
        xFinalize = (tcl_FinalizeProc *)dlsym(hLibrary, procName);
      }
      if( !xFinalize ){
        Th_ErrorMessage(interp,
            "could not locate Tcl_Finalize", (const char *)"", 0);
        dlclose(hLibrary); hLibrary = 0;
        return TH_ERROR;
      }
      *phLibrary = hLibrary;
      *pxFindExecutable = xFindExecutable;
      *pxCreateInterp = xCreateInterp;
      *pxDeleteInterp = xDeleteInterp;
      *pxFinalize = xFinalize;
      return TH_OK;
    }
  } while( --aFileName[TCL_MINOR_OFFSET]>'3' ); /* Tcl 8.4+ */
  aFileName[TCL_MINOR_OFFSET] = 'x';
  Th_ErrorMessage(interp,
      "could not load any supported Tcl 8.x shared library \"",
      aFileName, -1);
  return TH_ERROR;
#else
  *phLibrary = 0;
  *pxFindExecutable = Tcl_FindExecutable;
  *pxCreateInterp = Tcl_CreateInterp;
  *pxDeleteInterp = Tcl_DeleteInterp;
  *pxFinalize = Tcl_Finalize;
  return TH_OK;
#endif /* defined(USE_TCL_STUBS) */
}

/*
** Sets the "argv0", "argc", and "argv" script variables in the Tcl interpreter
** based on the supplied command line arguments.
*/
static int setTclArguments(
  Tcl_Interp *pInterp,
  int argc,
  char **argv
){
  Tcl_Obj *objPtr;
  Tcl_Obj *resultObjPtr;
  Tcl_Obj *listPtr;
  int rc = TCL_OK;

  if( argc<=0 || !argv ){
    return TCL_OK;
  }
  objPtr = Tcl_NewStringObj(argv[0], -1);
  Tcl_IncrRefCount(objPtr);
  resultObjPtr = Tcl_SetVar2Ex(pInterp, "argv0", NULL, objPtr,
      TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
  Tcl_DecrRefCount(objPtr); objPtr = 0;
  if( !resultObjPtr ){
    return TCL_ERROR;
  }
  objPtr = Tcl_NewWideIntObj(argc - 1);
  Tcl_IncrRefCount(objPtr);
  resultObjPtr = Tcl_SetVar2Ex(pInterp, "argc", NULL, objPtr,
      TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
  Tcl_DecrRefCount(objPtr); objPtr = 0;
  if( !resultObjPtr ){
    return TCL_ERROR;
  }
  listPtr = Tcl_NewListObj(0, NULL);
  Tcl_IncrRefCount(listPtr);
  if( argc>1 ){
    while( --argc ){
      objPtr = Tcl_NewStringObj(*++argv, -1);
      Tcl_IncrRefCount(objPtr);
      rc = Tcl_ListObjAppendElement(pInterp, listPtr, objPtr);
      Tcl_DecrRefCount(objPtr); objPtr = 0;
      if( rc!=TCL_OK ){
        break;
      }
    }
  }
  if( rc==TCL_OK ){
    resultObjPtr = Tcl_SetVar2Ex(pInterp, "argv", NULL, listPtr,
        TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG);
    if( !resultObjPtr ){
      rc = TCL_ERROR;
    }
  }
  Tcl_DecrRefCount(listPtr); listPtr = 0;
  return rc;
}

/*
** Evaluate a Tcl script, creating the Tcl interpreter if necessary. If the
** Tcl script succeeds, start a Tcl event loop until there are no more events
** remaining to process -OR- the script calls [exit].  If the bWait argument
** is zero, only process events that are already in the queue; otherwise,
** process events until the script terminates the Tcl event loop.
*/
void fossil_print(const char *zFormat, ...); /* printf.h */

int evaluateTclWithEvents(
  Th_Interp *interp,
  void *pContext,
  const char *zScript,
  int nScript,
  int bCancel,
  int bWait,
  int bVerbose
){
  struct TclContext *tclContext = (struct TclContext *)pContext;
  Tcl_Interp *tclInterp;
  int rc;
  int flags = TCL_ALL_EVENTS;
  int useTip285;

  if( createTclInterp(interp, pContext)!=TH_OK ){
    return TH_ERROR;
  }
  tclInterp = tclContext->interp;
  useTip285 = bCancel ? tclContext->useTip285 : 0;
  rc = Tcl_EvalEx(tclInterp, zScript, nScript, TCL_EVAL_GLOBAL);
  if( rc!=TCL_OK ){
    if( bVerbose ){
      const char *zResult = getTclResult(tclInterp, 0);
      fossil_print("%s: ", getTclReturnCodeName(rc, 0));
      fossil_print("%s\n", zResult);
    }
    return rc;
  }
  if( !bWait ) flags |= TCL_DONT_WAIT;
  Tcl_Preserve((ClientData)tclInterp);
  while( Tcl_DoOneEvent(flags) ){
    if( Tcl_InterpDeleted(tclInterp) ){
      break;
    }
#if MINIMUM_TCL_VERSION(8, 6)
    if( useTip285 && Tcl_Canceled(tclInterp, 0)!=TCL_OK ){
      break;
    }
#endif
  }
  Tcl_Release((ClientData)tclInterp);
  return rc;
}

/*
** Creates and initializes a Tcl interpreter for use with the specified TH1
** interpreter.  Stores the created Tcl interpreter in the Tcl context supplied
** by the caller.
*/
static int createTclInterp(
  Th_Interp *interp,
  void *pContext
){
  struct TclContext *tclContext = (struct TclContext *)pContext;
  int argc;
  char **argv;
  char *argv0 = 0;
  Tcl_Interp *tclInterp;
  const char *setup;

  if( !tclContext ){
    Th_ErrorMessage(interp,
        "invalid Tcl context", (const char *)"", 0);
    return TH_ERROR;
  }
  if( tclContext->interp ){
    return TH_OK;
  }
  if( loadTcl(interp, &tclContext->hLibrary, &tclContext->xFindExecutable,
              &tclContext->xCreateInterp, &tclContext->xDeleteInterp,
              &tclContext->xFinalize)!=TH_OK ){
    return TH_ERROR;
  }
  argc = tclContext->argc;
  argv = tclContext->argv;
  if( argc>0 && argv ){
    argv0 = argv[0];
  }
  tclContext->xFindExecutable(argv0);
  tclInterp = tclContext->xCreateInterp();
  if( !tclInterp ){
    Th_ErrorMessage(interp,
        "could not create Tcl interpreter", (const char *)"", 0);
    return TH_ERROR;
  }
#if defined(USE_TCL_STUBS)
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
  if( initTclStubs(interp, tclInterp)!=TH_OK ){
    tclContext->xDeleteInterp(tclInterp);
    tclInterp = 0;
    return TH_ERROR;
  }
#else
  if( !Tcl_InitStubs(tclInterp, "8.4", 0) ){
    Th_ErrorMessage(interp,
        "could not initialize Tcl stubs", (const char *)"", 0);
    tclContext->xDeleteInterp(tclInterp);
    tclInterp = 0;
    return TH_ERROR;
  }
#endif /* defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS) */
#endif /* defined(USE_TCL_STUBS) */
  if( Tcl_InterpDeleted(tclInterp) ){
    Th_ErrorMessage(interp,
        "Tcl interpreter appears to be deleted", (const char *)"", 0);
    Tcl_DeleteInterp(tclInterp); /* TODO: Redundant? */
    tclInterp = 0;
    return TH_ERROR;
  }
  tclContext->interp = tclInterp;
  if( Tcl_Init(tclInterp)!=TCL_OK ){
    Th_ErrorMessage(interp,
        "Tcl initialization error:",
        Tcl_GetString(Tcl_GetObjResult(tclInterp)), -1);
    Tcl_DeleteInterp(tclInterp);
    tclContext->interp = tclInterp = 0;
    return TH_ERROR;
  }
  if( setTclArguments(tclInterp, argc, argv)!=TCL_OK ){
    Th_ErrorMessage(interp,
        "Tcl error setting arguments:",
        Tcl_GetString(Tcl_GetObjResult(tclInterp)), -1);
    Tcl_DeleteInterp(tclInterp);
    tclContext->interp = tclInterp = 0;
    return TH_ERROR;
  }
  /*
  ** Determine (and cache) if an objProc can be called directly for a Tcl
  ** command invoked via the tclInvoke TH1 command.
  */
  tclContext->useObjProc = canUseObjProc();
  /*
  ** Determine (and cache) whether or not we can use TIP #285 (asynchronous
  ** script cancellation).
  */
  tclContext->useTip285 = canUseTip285();
  /* Add the TH1 integration commands to Tcl. */
  Tcl_CallWhenDeleted(tclInterp, Th1DeleteProc, interp);
  Tcl_CreateObjCommand(tclInterp, "th1Eval", Th1EvalObjCmd, interp, NULL);
  Tcl_CreateObjCommand(tclInterp, "th1Expr", Th1ExprObjCmd, interp, NULL);
  /* If necessary, evaluate the custom Tcl setup script. */
  setup = tclContext->setup;
  if( setup && Tcl_EvalEx(tclInterp, setup, -1, 0)!=TCL_OK ){
    Th_ErrorMessage(interp,
        "Tcl setup script error:",
        Tcl_GetString(Tcl_GetObjResult(tclInterp)), -1);
    Tcl_DeleteInterp(tclInterp);
    tclContext->interp = tclInterp = 0;
    return TH_ERROR;
  }
  return TH_OK;
}

/*
** Finalizes and unloads the previously loaded Tcl library, if applicable.
*/
int unloadTcl(
  Th_Interp *interp,
  void *pContext
){
  struct TclContext *tclContext = (struct TclContext *)pContext;
  Tcl_Interp *tclInterp;
  tcl_FinalizeProc *xFinalize;
#if defined(USE_TCL_STUBS)
  void *hLibrary;
#endif /* defined(USE_TCL_STUBS) */

  if( !tclContext ){
    Th_ErrorMessage(interp,
        "invalid Tcl context", (const char *)"", 0);
    return TH_ERROR;
  }
  /*
  ** Grab the Tcl_Finalize function pointer prior to deleting the Tcl
  ** interpreter because the memory backing the Tcl stubs table will
  ** be going away.
  */
  xFinalize = tclContext->xFinalize;
  /*
  ** If the Tcl interpreter has been created, formally delete it now.
  */
  tclInterp = tclContext->interp;
  if( tclInterp ){
    Tcl_DeleteInterp(tclInterp);
    tclContext->interp = tclInterp = 0;
  }
  /*
  ** If the Tcl library is not finalized prior to unloading it, a deadlock
  ** can occur in some circumstances (i.e. the [clock] thread is running).
  */
  if( xFinalize ) xFinalize();
#if defined(USE_TCL_STUBS)
  /*
  ** If Tcl is compiled on Windows using the latest MinGW, Fossil can crash
  ** when exiting while a stubs-enabled Tcl is still loaded.  This is due to
  ** a bug in MinGW, see:
  **
  **     http://comments.gmane.org/gmane.comp.gnu.mingw.user/41724
  **
  ** The workaround is to manually unload the loaded Tcl library prior to
  ** exiting the process.
  */
  hLibrary = tclContext->hLibrary;
  if( hLibrary ){
    dlclose(hLibrary);
    tclContext->hLibrary = hLibrary = 0;
  }
#endif /* defined(USE_TCL_STUBS) */
  return TH_OK;
}

/*
** Register the Tcl language commands with interpreter interp.
** Usually this is called soon after interpreter creation.
*/
int th_register_tcl(
  Th_Interp *interp,
  void *pContext
){
  int i;

  /* Add the Tcl integration commands to TH1. */
  for(i=0; i<count(aCommand); i++){
    void *ctx;
    if( !aCommand[i].zName || !aCommand[i].xProc ) continue;
    ctx = aCommand[i].pContext;
    /* Use Tcl interpreter for context? */
    if( !ctx ) ctx = pContext;
    Th_CreateCommand(interp, aCommand[i].zName, aCommand[i].xProc, ctx, 0);
  }
  return TH_OK;
}

#endif /* FOSSIL_ENABLE_TCL */
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1972
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1989
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2015
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2061
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2110
2111
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2113
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2133
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2143
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2145
2146
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2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
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2192
2193
2194
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2196
2197
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2199
2200
2201
2202
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2206
2207
2208
2209
2210
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2220
2221
2222
2223
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2226
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2228
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2240
2241
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2250
2251
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2255
2256
2257
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2260
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2316

2317
2318
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2320

2321
2322
2323
2324
2325
2326
2327
2328
2329

2330
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2333
2334
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2338

2339
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2376
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2380



2381
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2398
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2433



2434

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2439
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2468
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2500
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2507
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2758
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2767
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2775
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2872
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2894
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2905

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2911
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2922
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2926
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2949
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2961
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2990
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2999
3000
3001
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3007
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3010
3011
3012
3013
3014
3015




3016
3017
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3019
3020
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3022
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3077
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3083
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3110
3111
3112
3113
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3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133





3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
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3155
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3185
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3187
3188
3189


3190
3191
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3194
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3196
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3198
3199

3200
3201
3202
3203
3204
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3206
3207
3208
3209

3210
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3216
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3234
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3249
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3258
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3260
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3262
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3266
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3282
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3302
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3304
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3306
3307
3308




3309
3310
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3321
3322
3323
3324
3325
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3383
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3395
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3404
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3406
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3408
3409
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3455



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3476
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3625

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3657
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3808
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3904
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3907
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+


-



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**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the timeline web page
**
*/
#include "config.h"
#include <string.h>
#include <time.h>
#include "config.h"
#include "timeline.h"

/*
** Shorten a UUID so that is the minimum length needed to contain
** The value of one second in julianday notation
** at least one digit in the range 'a'..'f'.  The minimum length is 10.
*/
#define ONE_SECOND (1.0/86400.0)
static void shorten_uuid(char *zDest, const char *zSrc){
  int i;

/*
** timeline mode options
  for(i=0; i<10 && zSrc[i]<='9'; i++){}
  memcpy(zDest, zSrc, 10);
  if( i==10 && zSrc[i] ){
    do{
      zDest[i] = zSrc[i];
      i++;
    }while( zSrc[i-1]<='9' );
*/
#define TIMELINE_MODE_NONE      0
#define TIMELINE_MODE_BEFORE    1
#define TIMELINE_MODE_AFTER     2
#define TIMELINE_MODE_CHILDREN  3
#define TIMELINE_MODE_PARENTS   4
  }else{
    i = 10;
  }
  zDest[i] = 0;
}


#define TIMELINE_FMT_ONELINE \
    "%h %c"
#define TIMELINE_FMT_MEDIUM \
    "Commit:   %h%nDate:     %d%nAuthor:   %a%nComment:  %c"
#define TIMELINE_FMT_FULL \
    "Commit:   %H%nDate:     %d%nAuthor:   %a%nComment:  %c%n"\
    "Branch:   %b%nTags:     %t%nPhase:    %p"
/*
** Add an appropriate tag to the output if "rid" is unpublished (private)
*/
#define UNPUB_TAG "<em>(unpublished)</em>"
void tag_private_status(int rid){
  if( content_is_private(rid) ){
    cgi_printf(" %s", UNPUB_TAG);
  }
}

/*
** Generate a hyperlink to a version.
*/
void hyperlink_to_uuid(const char *zUuid){
void hyperlink_to_version(const char *zVerHash){
  char zShortUuid[UUID_SIZE+1];
  shorten_uuid(zShortUuid, zUuid);
  if( g.okHistory ){
  if( g.perm.Hyperlink ){
    @ <a href="%s(g.zBaseURL)/info/%s(zShortUuid)">[%s(zShortUuid)]</a>
  }else{
    @ <b>[%s(zShortUuid)]</b>
  }
}

    @ %z(chref("timelineHistLink","%R/info/%!S",zVerHash))[%S(zVerHash)]</a>
/*
** Generate a hyperlink that invokes javascript to highlight
** a version on mouseover.
*/
void hyperlink_to_uuid_with_mouseover(
  const char *zUuid,   /* The UUID to display */
  const char *zIn,     /* Javascript proc for mouseover */
  const char *zOut,    /* Javascript proc for mouseout */
  int id               /* Argument to javascript procs */
){
  char zShortUuid[UUID_SIZE+1];
  shorten_uuid(zShortUuid, zUuid);
  if( g.okHistory ){
    @ <a onmouseover='%s(zIn)("m%d(id)")' onmouseout='%s(zOut)("m%d(id)")'
    @    href="%s(g.zBaseURL)/vinfo/%s(zShortUuid)">[%s(zShortUuid)]</a>
  }else{
    @ <b onmouseover='%s(zIn)("m%d(id)")' onmouseout='%s(zOut)("m%d(id)")'>
    @ [%s(zShortUuid)]</b>
  }
}

    @ <span class="timelineHistDsp">[%S(zVerHash)]</span>
/*
** Generate a hyperlink to a diff between two versions.
*/
void hyperlink_to_diff(const char *zV1, const char *zV2){
  if( g.okHistory ){
    if( zV2==0 ){
      @ <a href="%s(g.zBaseURL)/diff?v2=%s(zV1)">[diff]</a>
    }else{
      @ <a href="%s(g.zBaseURL)/diff?v1=%s(zV1)&v2=%s(zV2)">[diff]</a>
    }
  }
}

/*
** Generate a hyperlink to a date & time.
*/
void hyperlink_to_date(const char *zDate, const char *zSuffix){
  if( zSuffix==0 ) zSuffix = "";
  if( g.okHistory ){
    @ <a href="%s(g.zTop)/timeline?c=%T(zDate)">%s(zDate)</a>%s(zSuffix)
  if( g.perm.Hyperlink ){
    @ %z(href("%R/timeline?c=%T",zDate))%s(zDate)</a>%s(zSuffix)
  }else{
    @ %s(zDate)%s(zSuffix)
  }
}

/*
** Generate a hyperlink to a user.  This will link to a timeline showing
** events by that user.  If the date+time is specified, then the timeline
** is centered on that date+time.
*/
void hyperlink_to_user(const char *zU, const char *zD, const char *zSuf){
  if( zU==0 || zU[0]==0 ) zU = "anonymous";
  if( zSuf==0 ) zSuf = "";
  if( g.okHistory ){
  if( g.perm.Hyperlink ){
    if( zD && zD[0] ){
      @ <a href="%s(g.zTop)/timeline?c=%T(zD)&u=%T(zU)">%h(zU)</a>%s(zSuf)
      @ %z(href("%R/timeline?c=%T&u=%T&y=a",zD,zU))%h(zU)</a>%s(zSuf)
    }else{
      @ <a href="%s(g.zTop)/timeline?u=%T(zU)">%h(zU)</a>%s(zSuf)
      @ %z(href("%R/timeline?u=%T&y=a",zU))%h(zU)</a>%s(zSuf)
    }
  }else{
    @ %s(zU)
  }
}

/*
** Count the number of primary non-branch children for the given check-in.
**
** A primary child is one where the parent is the primary parent, not
** a merge parent.
**
** A non-branch child is one which is on the same branch as the parent.
*/
int count_nonbranch_children(int pid){
  int nNonBranch;
  static const char zSql[] = 
    @ SELECT count(*) FROM plink
    @  WHERE pid=%d AND isprim
    @    AND coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @       =coalesce((SELECT value FROM tagxref
    @                   WHERE tagid=%d AND rid=plink.cid), 'trunk')
  ;
  nNonBranch = db_int(0, zSql, pid, TAG_BRANCH, TAG_BRANCH);
  return nNonBranch;
}

/*
** Allowed flags for the tmFlags argument to www_print_timeline
*/
#if INTERFACE
#define TIMELINE_ARTID    0x0001  /* Show artifact IDs on non-check-in lines */
#define TIMELINE_LEAFONLY 0x0002  /* Show "Leaf", but not "Merge", "Fork" etc */
#define TIMELINE_BRIEF    0x0004  /* Combine adjacent elements of same object */
#define TIMELINE_GRAPH    0x0008  /* Compute a graph */
#define TIMELINE_DISJOINT 0x0010  /* Elements are not contiguous */
#define TIMELINE_ARTID    0x0000001 /* Show artifact IDs on non-check-in lines*/
#define TIMELINE_LEAFONLY 0x0000002 /* Show "Leaf" but not "Merge", "Fork" etc*/
#define TIMELINE_BRIEF    0x0000004 /* Combine adjacent elements of same obj */
#define TIMELINE_GRAPH    0x0000008 /* Compute a graph */
#define TIMELINE_DISJOINT 0x0000010 /* Elements are not contiguous */
#define TIMELINE_FCHANGES 0x0000020 /* Detail file changes */
#define TIMELINE_BRCOLOR  0x0000040 /* Background color by branch name */
#define TIMELINE_UCOLOR   0x0000080 /* Background color by user */
#define TIMELINE_FRENAMES 0x0000100 /* Detail only file name changes */
#define TIMELINE_UNHIDE   0x0000200 /* Unhide check-ins with "hidden" tag */
#define TIMELINE_SHOWRID  0x0000400 /* Show RID values in addition to hashes */
#define TIMELINE_BISECT   0x0000800 /* Show supplemental bisect information */
#define TIMELINE_COMPACT  0x0001000 /* Use the "compact" view style */
#define TIMELINE_VERBOSE  0x0002000 /* Use the "detailed" view style */
#define TIMELINE_MODERN   0x0004000 /* Use the "modern" view style */
#define TIMELINE_COLUMNAR 0x0008000 /* Use the "columns" view style */
#define TIMELINE_CLASSIC  0x0010000 /* Use the "classic" view style */
#define TIMELINE_VIEWS    0x001f000 /* Mask for all of the view styles */
#define TIMELINE_NOSCROLL 0x0100000 /* Don't scroll to the selection */
#define TIMELINE_FILEDIFF 0x0200000 /* Show File differences, not ckin diffs */
#define TIMELINE_CHPICK   0x0400000 /* Show cherrypick merges */
#define TIMELINE_FILLGAPS 0x0800000 /* Dotted lines for missing nodes */
#define TIMELINE_XMERGE   0x1000000 /* Omit merges from off-graph nodes */
#define TIMELINE_NOTKT    0x2000000 /* Omit extra ticket classes */
#define TIMELINE_FORUMTXT 0x4000000 /* Render all forum messages */
#define TIMELINE_REFS     0x8000000 /* Output intended for References tab */
#define TIMELINE_DELTA   0x10000000 /* Background color shows delta manifests */
#define TIMELINE_NOCOLOR 0x20000000 /* No colors except for highlights */
#endif

/*
** Return a new timelineTable id.
*/
int timeline_tableid(void){
  static int id = 0;
  return id++;
}

/*
** Return true if the checking identified by "rid" has a valid "closed"
** tag.
*/
static int has_closed_tag(int rid){
  static Stmt q;
  int res = 0;
  db_static_prepare(&q,
     "SELECT 1 FROM tagxref WHERE rid=$rid AND tagid=%d AND tagtype>0",
     TAG_CLOSED);
  db_bind_int(&q, "$rid", rid);
  res = db_step(&q)==SQLITE_ROW;
  db_reset(&q);
  return res;
}

/*
** Return the text of the unformatted
** forum post given by the RID in the argument.
*/
static void forum_post_content_function(
 sqlite3_context *context,
 int argc,
 sqlite3_value **argv
){
  int rid = sqlite3_value_int(argv[0]);
  Manifest *pPost = manifest_get(rid, CFTYPE_FORUM, 0);
  if( pPost ){
    sqlite3_result_text(context, pPost->zWiki, -1, SQLITE_TRANSIENT);
    manifest_destroy(pPost);
  }
}


/*
** Output a timeline in the web format given a query.  The query
** should return these columns:
**
**    0.  rid
**    1.  UUID
**    1.  artifact hash
**    2.  Date/Time
**    3.  Comment string
**    4.  User
**    5.  True if is a leaf
**    6.  background color
**    7.  type ("ci", "w", "t")
**    7.  type ("ci", "w", "t", "e", "g", "f", "div")
**    8.  list of symbolic tags.
**    9.  tagid for ticket or wiki
**    9.  tagid for ticket or wiki or event
**   10.  Short comment to user for repeated tickets and wiki
*/
void www_print_timeline(
  Stmt *pQuery,          /* Query to implement the timeline */
  int tmFlags,           /* Flags controlling display behavior */
  void (*xExtra)(int)    /* Routine to call on each line of display */
  Stmt *pQuery,            /* Query to implement the timeline */
  int tmFlags,             /* Flags controlling display behavior */
  const char *zThisUser,   /* Suppress links to this user */
  const char *zThisTag,    /* Suppress links to this tag */
  const char *zLeftBranch, /* Strive to put this branch on the left margin */
  int selectedRid,         /* Highlight the line with this RID value or zero */
  int secondRid,           /* Secondary highlight (or zero) */
  void (*xExtra)(int)      /* Routine to call on each line of display */
){
  int wikiFlags;
  int mxWikiLen;
  Blob comment;
  int prevTagid = 0;
  int suppressCnt = 0;
  char zPrevDate[20];
  GraphContext *pGraph = 0;
  int prevWasDivider = 0;     /* True if previous output row was <hr> */
  int fchngQueryInit = 0;     /* True if fchngQuery is initialized */
  Stmt fchngQuery;            /* Query for file changes on check-ins */
  static Stmt qbranch;
  int pendingEndTr = 0;       /* True if a </td></tr> is needed */
  int vid = 0;                /* Current check-out version */
  int dateFormat = 0;         /* 0: HH:MM (default) */
  int bCommentGitStyle = 0;   /* Only show comments through first blank line */
  const char *zStyle;         /* Sub-name for classes for the style */
  const char *zDateFmt;
  int iTableId = timeline_tableid();
  int bTimestampLinksToInfo;  /* True if timestamp hyperlinks go to the /info
                              ** page rather than the /timeline page */

  if( cgi_is_loopback(g.zIpAddr) && db_open_local(0) ){
    vid = db_lget_int("checkout", 0);
  }
  zPrevDate[0] = 0;
  mxWikiLen = db_get_int("timeline-max-comment", 0);
  dateFormat = db_get_int("timeline-date-format", 0);
  bCommentGitStyle = db_get_int("timeline-truncate-at-blank", 0);
  if( db_get_boolean("timeline-block-markup", 0) ){
    wikiFlags = WIKI_INLINE;
  bTimestampLinksToInfo = db_get_boolean("timeline-tslink-info", 0);
  if( (tmFlags & TIMELINE_VIEWS)==0 ){
    tmFlags |= timeline_ss_cookie();
  }
  if( tmFlags & TIMELINE_COLUMNAR ){
    zStyle = "Columnar";
  }else if( tmFlags & TIMELINE_COMPACT ){
    zStyle = "Compact";
  }else if( tmFlags & TIMELINE_VERBOSE ){
    zStyle = "Verbose";
  }else if( tmFlags & TIMELINE_CLASSIC ){
    zStyle = "Classic";
  }else{
    wikiFlags = WIKI_INLINE | WIKI_NOBLOCK;
    zStyle = "Modern";
  }
  zDateFmt = P("datefmt");
  if( zDateFmt ) dateFormat = atoi(zDateFmt);
  if( tmFlags & TIMELINE_GRAPH ){
    pGraph = graph_init();
    @ <div id="canvas" style="position:relative;width:1px;height:1px;"></div>
  }
  db_static_prepare(&qbranch,
    "SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0 AND rid=:rid",
    TAG_BRANCH
  );
  if( (tmFlags & TIMELINE_CHPICK)!=0
   && !db_table_exists("repository","cherrypick")
  ){
    tmFlags &= ~TIMELINE_CHPICK;

  @ <table cellspacing=0 border=0 cellpadding=0>
  }
  @ <table id="timelineTable%d(iTableId)" class="timelineTable"> \
  @ <!-- tmFlags: 0x%x(tmFlags) -->
  blob_zero(&comment);
  while( db_step(pQuery)==SQLITE_ROW ){
    int rid = db_column_int(pQuery, 0);
    const char *zUuid = db_column_text(pQuery, 1);
    int isLeaf = db_column_int(pQuery, 5);
    const char *zBgClr = db_column_text(pQuery, 6);
    const char *zDate = db_column_text(pQuery, 2);
    const char *zType = db_column_text(pQuery, 7);
    const char *zUser = db_column_text(pQuery, 4);
    const char *zTagList = db_column_text(pQuery, 8);
    int tagid = db_column_int(pQuery, 9);
    const char *zDispUser = zUser && zUser[0] ? zUser : "anonymous";
    const char *zBr = 0;      /* Branch */
    int commentColumn = 3;    /* Column containing comment text */
    int modPending;           /* Pending moderation */
    char *zDateLink;          /* URL for the link on the timestamp */
    int drawDetailEllipsis;   /* True to show ellipsis in place of detail */
    int gidx = 0;             /* Graph row identifier */
    int isSelectedOrCurrent = 0;  /* True if current row is selected */
    const char *zExtraClass = "";
    char zTime[8];
    char zTime[20];

    if( zDate==0 ){
      zDate = "YYYY-MM-DD HH:MM:SS";  /* Something wrong with the repo */
    }
    modPending = moderation_pending(rid);
    if( tagid ){
      if( modPending ) tagid = -tagid;
      if( tagid==prevTagid ){
        if( tmFlags & TIMELINE_BRIEF ){
          suppressCnt++;
          continue;
        }else{
          commentColumn = 10;
        }
      }
    }
    prevTagid = tagid;
    if( suppressCnt ){
      @ <tr><td><td><td>
      @ <small><i>... %d(suppressCnt) similar
      @ event%s(suppressCnt>1?"s":"") omitted.</i></small></tr>
      @ <span class="timelineDisabled">... %d(suppressCnt) similar
      @ event%s(suppressCnt>1?"s":"") omitted.</span>
      suppressCnt = 0;
    }
    if( pendingEndTr ){
      @ </td></tr>
      pendingEndTr = 0;
    }
    if( strcmp(zType,"div")==0 ){
      @ <tr><td colspan=3><hr></td></tr>
    if( fossil_strcmp(zType,"div")==0 ){
      if( !prevWasDivider ){
        @ <tr><td colspan="3"><hr class="timelineMarker"></td></tr>
      }
      prevWasDivider = 1;
      continue;
    }
    prevWasDivider = 0;
    /* Date format codes:
    **   (0)  HH:MM
    **   (1)  HH:MM:SS
    **   (2)  YYYY-MM-DD HH:MM
    **   (3)  YYMMDD HH:MM
    **   (4)  (off)
    */
    if( dateFormat<2 ){
    if( memcmp(zDate, zPrevDate, 10) ){
      sprintf(zPrevDate, "%.10s", zDate);
      @ <tr><td>
      @   <div class="divider"><nobr>%s(zPrevDate)</nobr></div>
      @ </td></tr>
    }
    memcpy(zTime, &zDate[11], 5);
    zTime[5] = 0;
    @ <tr>
      if( fossil_strnicmp(zDate, zPrevDate, 10) ){
        sqlite3_snprintf(sizeof(zPrevDate), zPrevDate, "%.10s", zDate);
        @ <tr class="timelineDateRow"><td>
        @   <div class="divider timelineDate">%s(zPrevDate)</div>
        @ </td><td></td><td></td></tr>
      }
      memcpy(zTime, &zDate[11], 5+dateFormat*3);
      zTime[5+dateFormat*3] = 0;
    }else if( 2==dateFormat ){
      /* YYYY-MM-DD HH:MM */
      sqlite3_snprintf(sizeof(zTime), zTime, "%.16s", zDate);
    }else if( 3==dateFormat ){
      /* YYMMDD HH:MM */
      int pos = 0;
      zTime[pos++] = zDate[2]; zTime[pos++] = zDate[3]; /* YY */
      zTime[pos++] = zDate[5]; zTime[pos++] = zDate[6]; /* MM */
      zTime[pos++] = zDate[8]; zTime[pos++] = zDate[9]; /* DD */
      zTime[pos++] = ' ';
      zTime[pos++] = zDate[11]; zTime[pos++] = zDate[12]; /* HH */
      zTime[pos++] = ':';
      zTime[pos++] = zDate[14]; zTime[pos++] = zDate[15]; /* MM */
      zTime[pos++] = 0;
    }else{
      zTime[0] = 0;
    }
    pendingEndTr = 1;
    if( rid==selectedRid ){
      @ <tr class="timelineSelected">
      isSelectedOrCurrent = 1;
    }else if( rid==secondRid ){
      @ <tr class="timelineSelected timelineSecondary">
      isSelectedOrCurrent = 1;
    }else if( rid==vid ){
      @ <tr class="timelineCurrent">
      isSelectedOrCurrent = 1;
    }else {
      @ <tr>
    @ <td valign="top" align="right">%s(zTime)</td>
    @ <td width="20" align="left" valign="top">
    if( pGraph && zType[0]=='c' ){
      int nParent = 0;
    }
    if( zType[0]=='t' && tagid && (tmFlags & TIMELINE_NOTKT)==0 ){
      char *zTktid = db_text(0, "SELECT substr(tagname,5) FROM tag"
                                " WHERE tagid=%d", tagid);
      if( zTktid ){
        int isClosed = 0;
      int aParent[32];
      const char *zBr;
      int gidx;
      static Stmt qparent;
      static Stmt qbranch;
      db_static_prepare(&qparent,
        "SELECT pid FROM plink WHERE cid=:rid ORDER BY isprim DESC /*sort*/"
        if( is_ticket(zTktid, &isClosed) && isClosed ){
          zExtraClass = " tktTlClosed";
        }else{
          zExtraClass = " tktTlOpen";
        }
        fossil_free(zTktid);
      }
    }
    if( zType[0]=='e' && tagid ){
      if( bTimestampLinksToInfo ){
        char *zId;
        zId = db_text(0, "SELECT substr(tagname, 7) FROM tag WHERE tagid=%d",
                          tagid);
        zDateLink = href("%R/technote/%s",zId);
        free(zId);
      }else{
        zDateLink = href("%R/timeline?c=%t&y=a",zDate);
      }
    }else if( zUuid ){
      if( bTimestampLinksToInfo ){
        zDateLink = chref("timelineHistLink", "%R/info/%!S", zUuid);
      }else{
        zDateLink = chref("timelineHistLink", "%R/timeline?c=%!S&y=a", zUuid);
      }
    }else{
      zDateLink = mprintf("<a>");
    }
    @ <td class="timelineTime">%z(zDateLink)%s(zTime)</a></td>
    @ <td class="timelineGraph">
    if( tmFlags & (TIMELINE_UCOLOR|TIMELINE_DELTA|TIMELINE_NOCOLOR) ){
      if( tmFlags & TIMELINE_UCOLOR ){
        zBgClr = zUser ? user_color(zUser) : 0;
      }else if( tmFlags & TIMELINE_NOCOLOR ){
        zBgClr = 0;
      }else if( zType[0]=='c' ){
        static Stmt qdelta;
        db_static_prepare(&qdelta, "SELECT baseid IS NULL FROM plink"
                                   " WHERE cid=:rid");
      );
      db_static_prepare(&qbranch,
        "SELECT value FROM tagxref WHERE tagid=%d AND tagtype>0 AND rid=:rid",
        TAG_BRANCH
      );
      db_bind_int(&qparent, ":rid", rid);
      while( db_step(&qparent)==SQLITE_ROW && nParent<32 ){
        aParent[nParent++] = db_column_int(&qparent, 0);
      }
      db_reset(&qparent);
        db_bind_int(&qdelta, ":rid", rid);
        if( db_step(&qdelta)!=SQLITE_ROW ){
          zBgClr = 0; /* Not a check-in */
        }else if( db_column_int(&qdelta, 0) ){
          zBgClr = hash_color("b");  /* baseline manifest */
        }else{
          zBgClr = hash_color("f");  /* delta manifest */
        }
        db_reset(&qdelta);
      }
    }
    if( zType[0]=='c'
    && (pGraph || zBgClr==0 || (tmFlags & (TIMELINE_BRCOLOR|TIMELINE_DELTA))!=0)
    ){
      db_reset(&qbranch);
      db_bind_int(&qbranch, ":rid", rid);
      if( db_step(&qbranch)==SQLITE_ROW ){
        zBr = db_column_text(&qbranch, 0);
      }else{
        zBr = "trunk";
      }
      if( zBgClr==0 || (tmFlags & TIMELINE_BRCOLOR)!=0 ){
        if( tmFlags & (TIMELINE_DELTA|TIMELINE_NOCOLOR) ){
        }else if( zBr==0 || strcmp(zBr,"trunk")==0 ){
          zBgClr = 0;
        }else{
          zBgClr = hash_color(zBr);
        }
      }
    }
    if( zType[0]=='c' && pGraph ){
      int nParent = 0;
      int nCherrypick = 0;
      GraphRowId aParent[GR_MAX_RAIL];
      static Stmt qparent;
      db_static_prepare(&qparent,
        "SELECT pid FROM plink"
        " WHERE cid=:rid AND pid NOT IN phantom"
        " ORDER BY isprim DESC /*sort*/"
      );
      db_bind_int(&qparent, ":rid", rid);
      while( db_step(&qparent)==SQLITE_ROW && nParent<count(aParent) ){
        aParent[nParent++] = db_column_int(&qparent, 0);
      }
      db_reset(&qparent);
      if( (tmFlags & TIMELINE_CHPICK)!=0 && nParent>0 ){
        static Stmt qcherrypick;
        db_static_prepare(&qcherrypick,
          "SELECT parentid FROM cherrypick"
          " WHERE childid=:rid AND parentid NOT IN phantom"
        );
        db_bind_int(&qcherrypick, ":rid", rid);
        while( db_step(&qcherrypick)==SQLITE_ROW && nParent<count(aParent) ){
          aParent[nParent++] = db_column_int(&qcherrypick, 0);
          nCherrypick++;
        }
        db_reset(&qcherrypick);
      }
      gidx = graph_add_row(pGraph, rid, nParent, aParent, zBr, zBgClr);
      gidx = graph_add_row(pGraph, rid, nParent, nCherrypick, aParent,
                           zBr, zBgClr, zUuid,
                           isLeaf ? isLeaf + 2 * has_closed_tag(rid) : 0);
      db_reset(&qbranch);
      @ <div id="m%d(gidx)"></div>
      @ <div id="m%d(gidx)" class="tl-nodemark"></div>
    }else if( zType[0]=='e' && pGraph && zBgClr && zBgClr[0] ){
      /* For technotes, make a graph node with nParent==(-1).  This will
      ** not actually draw anything on the graph, but it will set the
      ** background color of the timeline entry */
      gidx = graph_add_row(pGraph, rid, -1, 0, 0, zBr, zBgClr, zUuid, 0);
      @ <div id="m%d(gidx)" class="tl-nodemark"></div>
    }
    @</td>
    if( zBgClr && zBgClr[0] ){
      @ <td valign="top" align="left" bgcolor="%h(zBgClr)">
    if( !isSelectedOrCurrent ){
      @ <td class="timeline%s(zStyle)Cell%s(zExtraClass)" id='mc%d(gidx)'>
    }else{
      @ <td valign="top" align="left">
      @ <td class="timeline%s(zStyle)Cell%s(zExtraClass)">
    }
    if( pGraph ){
    if( zType[0]=='c' ){
      if( zType[0]=='e' ){
      hyperlink_to_uuid(zUuid);
      if( isLeaf ){
        if( db_exists("SELECT 1 FROM tagxref"
                      " WHERE rid=%d AND tagid=%d AND tagtype>0",
                      rid, TAG_CLOSED) ){
          @ <b>Closed-Leaf:</b>
        }else{
          @ <b>Leaf:</b>
        }
      }
    }else if( (tmFlags & TIMELINE_ARTID)!=0 ){
        @ <b>Note:</b>
      }else if( zType[0]!='c' ){
        @ &bull;
      }
    }
    if( modPending ){
      @ <span class="modpending">(Awaiting Moderator Approval)</span>
    }
    if( (tmFlags & TIMELINE_BISECT)!=0 && zType[0]=='c' ){
      hyperlink_to_uuid(zUuid);
    }
      static Stmt bisectQuery;
      db_static_prepare(&bisectQuery,
          "SELECT seq, stat FROM bilog WHERE rid=:rid AND seq");
      db_bind_int(&bisectQuery, ":rid", rid);
      if( db_step(&bisectQuery)==SQLITE_ROW ){
        @ <b>%s(db_column_text(&bisectQuery,1))</b>
        @ (%d(db_column_int(&bisectQuery,0)))
      }
      db_reset(&bisectQuery);
    }
    drawDetailEllipsis = (tmFlags & (TIMELINE_COMPACT))!=0;
    db_column_blob(pQuery, commentColumn, &comment);
    if( tmFlags & TIMELINE_COMPACT ){
      @ <span class='timelineCompactComment' data-id='%d(rid)'>
    }else{
      @ <span class='timeline%s(zStyle)Comment'>
    }
    if( (tmFlags & TIMELINE_CLASSIC)!=0 ){
      if( zType[0]=='c' ){
        hyperlink_to_version(zUuid);
        if( isLeaf ){
          if( has_closed_tag(rid) ){
            @ <span class="timelineLeaf">Closed-Leaf:</span>
          }else{
            @ <span class="timelineLeaf">Leaf:</span>
          }
        }
      }else if( zType[0]=='e' && tagid ){
        hyperlink_to_event_tagid(tagid<0?-tagid:tagid);
      }else if( (tmFlags & TIMELINE_ARTID)!=0 ){
        hyperlink_to_version(zUuid);
      }
      if( tmFlags & TIMELINE_SHOWRID ){
        int srcId = delta_source_rid(rid);
        if( srcId ){
          @ (%z(href("%R/deltachain/%d",rid))%d(rid)&larr;%d(srcId)</a>)
        }else{
          @ (%z(href("%R/deltachain/%d",rid))%d(rid)</a>)
        }
      }
    }
    if( zType[0]!='c' ){
      /* Comments for anything other than a check-in are generated by
      ** "fossil rebuild" and expect to be rendered as text/x-fossil-wiki */
      if( zType[0]=='w' ){
        const char *zCom = blob_str(&comment);
        /* Except, the comments generated by "fossil rebuild" for a wiki
        ** page edit consist of a single character '-', '+', or ':' (to
        ** indicate "deleted", "added", or "edited") followed by the
        ** raw wiki page name.  We have to generate an appropriate
        ** comment on-the-fly
        */
        wiki_hyperlink_override(zUuid);
        if( zCom[0]=='-' ){
          @ Deleted wiki page "%z(href("%R/whistory?name=%t",zCom+1))\
          @ %h(zCom+1)</a>"
        }else if( (tmFlags & TIMELINE_REFS)!=0
               && (zCom[0]=='+' || zCom[0]==':') ){
          @ Wiki page "%z(href("%R/wiki?name=%t",zCom+1))%h(zCom+1)</a>"
        }else if( zCom[0]=='+' ){
          @ Added wiki page "%z(href("%R/wiki?name=%t",zCom+1))%h(zCom+1)</a>"
        }else if( zCom[0]==':' ){
          @ %z(href("%R/wdiff?id=%!S",zUuid))Changes</a> to wiki page
          @ "%z(href("%R/wiki?name=%t",zCom+1))%h(zCom+1)</a>"
        }else{
          /* Assume this is an attachment message. It _might_ also
          ** be a legacy-format wiki log entry, in which case it
          ** will simply be rendered in the older format. */
          wiki_convert(&comment, 0, WIKI_INLINE);
        }
        wiki_hyperlink_override(0);
      }else{
        wiki_convert(&comment, 0, WIKI_INLINE);
      }
    }else{
      if( bCommentGitStyle ){
        /* Truncate comment at first blank line */
        int ii, jj;
        int n = blob_size(&comment);
        char *z = blob_str(&comment);
        for(ii=0; ii<n; ii++){
          if( z[ii]=='\n' ){
            for(jj=ii+1; jj<n && z[jj]!='\n' && fossil_isspace(z[jj]); jj++){}
            if( z[jj]=='\n' ) break;
          }
        }
        z[ii] = 0;
        cgi_printf("%W",z);
    if( mxWikiLen>0 && blob_size(&comment)>mxWikiLen ){
      Blob truncated;
      blob_zero(&truncated);
      blob_append(&truncated, blob_buffer(&comment), mxWikiLen);
      blob_append(&truncated, "...", 3);
      wiki_convert(&truncated, 0, wikiFlags);
      blob_reset(&truncated);
    }else{
      wiki_convert(&comment, 0, wikiFlags);
    }
      }else if( mxWikiLen>0 && (int)blob_size(&comment)>mxWikiLen ){
        Blob truncated;
        blob_zero(&truncated);
        blob_append(&truncated, blob_buffer(&comment), mxWikiLen);
        blob_append(&truncated, "...", 3);
        @ %W(blob_str(&truncated))
        blob_reset(&truncated);
        drawDetailEllipsis = 0;
      }else{
        cgi_printf("%W",blob_str(&comment));
      }
    }
    @ </span>
    blob_reset(&comment);

    /* Generate extra information and hyperlinks to follow the comment.
    ** Example:  "(check-in: [abcdefg], user: drh, tags: trunk)"
    */
    if( drawDetailEllipsis ){
      @ <span class='timelineEllipsis' id='ellipsis-%d(rid)' \
      @ data-id='%d(rid)'>...</span>
    }
    if( tmFlags & TIMELINE_COLUMNAR ){
      if( !isSelectedOrCurrent ){
        @ <td class="timelineDetailCell%s(zExtraClass)" id='md%d(gidx)'>
      }else{
        @ <td class="timelineDetailCell%s(zExtraClass)">
      }
    }
    if( tmFlags & TIMELINE_COMPACT ){
      cgi_printf("<span class='clutter' id='detail-%d'>",rid);
    }
    cgi_printf("<span class='timeline%sDetail'>", zStyle);
    if( (tmFlags & (TIMELINE_CLASSIC|TIMELINE_VERBOSE|TIMELINE_COMPACT))!=0 ){
      cgi_printf("(");
    }

    if( (tmFlags & TIMELINE_CLASSIC)==0 ){
      if( zType[0]=='c' ){
        if( isLeaf ){
          if( has_closed_tag(rid) ){
            @ <span class='timelineLeaf'>Closed-Leaf</span>
          }else{
            @ <span class='timelineLeaf'>Leaf</span>
          }
        }
        cgi_printf("check-in:&nbsp;%z%S</a> ",href("%R/info/%!S",zUuid),zUuid);
      }else if( zType[0]=='e' && tagid ){
        cgi_printf("technote:&nbsp;");
        hyperlink_to_event_tagid(tagid<0?-tagid:tagid);
      }else{
        cgi_printf("artifact:&nbsp;%z%S</a> ",href("%R/info/%!S",zUuid),zUuid);
      }
    }else if( zType[0]=='g' || zType[0]=='w' || zType[0]=='t'
              || zType[0]=='n' || zType[0]=='f'){
      cgi_printf("artifact:&nbsp;%z%S</a> ",href("%R/info/%!S",zUuid),zUuid);
    }

    if( g.perm.Hyperlink && fossil_strcmp(zDispUser, zThisUser)!=0 ){
      char *zLink;
      if( zType[0]!='f' || (tmFlags & TIMELINE_FORUMTXT)==0 ){
        zLink = mprintf("%R/timeline?u=%h&c=%t&y=a", zDispUser, zDate);
      }else{
        zLink = mprintf("%R/timeline?u=%h&c=%t&y=a&vfx", zDispUser, zDate);
      }
      cgi_printf("user:&nbsp;%z%h</a>", href("%z",zLink), zDispUser);
    }else{
      cgi_printf("user:&nbsp;%h", zDispUser);
    }

    /* Generate the "tags: TAGLIST" at the end of the comment, together
    ** with hyperlinks to the tag list.
    */
    if( zTagList && zTagList[0] ){
      @ (user: %h(zUser), tags: %h(zTagList))
    }else{
      @ (user: %h(zUser))
    }
    if( zTagList && zTagList[0]==0 ) zTagList = 0;
    if( zTagList ){
      if( g.perm.Hyperlink ){
        int i;
        const char *z = zTagList;
        Blob links;
        blob_zero(&links);
        while( z && z[0] ){
          for(i=0; z[i] && (z[i]!=',' || z[i+1]!=' '); i++){}
          if( zThisTag==0 || memcmp(z, zThisTag, i)!=0 || zThisTag[i]!=0 ){
            blob_appendf(&links,
                  "%z%#h</a>%.2s",
                  href("%R/timeline?r=%#t&c=%t",i,z,zDate), i,z, &z[i]
            );
          }else{
            blob_appendf(&links, "%#h", i+2, z);
          }
          if( z[i]==0 ) break;
          z += i+2;
        }
        cgi_printf(" tags:&nbsp;%s", blob_str(&links));
        blob_reset(&links);
      }else{
        cgi_printf(" tags:&nbsp;%h", zTagList);
      }
    }

    if( tmFlags & TIMELINE_SHOWRID ){
      int srcId = delta_source_rid(rid);
      if( srcId ){
        cgi_printf(" id:&nbsp;%z%d&larr;%d</a>",
                   href("%R/deltachain/%d",rid), rid, srcId);
      }else{
        cgi_printf(" id:&nbsp;%z%d</a>",
                   href("%R/deltachain/%d",rid), rid);
      }
    }
    tag_private_status(rid);
    if( xExtra ){
      xExtra(rid);
    }
    /* End timelineDetail */
    if( (tmFlags & (TIMELINE_CLASSIC|TIMELINE_VERBOSE|TIMELINE_COMPACT))!=0 ){
      cgi_printf(")");
    }
    if( tmFlags & TIMELINE_COMPACT ){
      @ </span></span>
    }else{
      @ </span>
    }

    /* Generate the file-change list if requested */
    if( (tmFlags & (TIMELINE_FCHANGES|TIMELINE_FRENAMES))!=0
     && zType[0]=='c' && g.perm.Hyperlink
    ){
      int inUl = 0;
      if( !fchngQueryInit ){
        db_prepare(&fchngQuery,
          "SELECT pid,"
          "       fid,"
          "       (SELECT name FROM filename WHERE fnid=mlink.fnid) AS name,"
          "       (SELECT uuid FROM blob WHERE rid=fid),"
          "       (SELECT uuid FROM blob WHERE rid=pid),"
          "       (SELECT name FROM filename WHERE fnid=mlink.pfnid) AS oldnm"
          "  FROM mlink"
          " WHERE mid=:mid AND (pid!=fid OR pfnid>0)"
          "   AND (fid>0 OR"
               "   fnid NOT IN (SELECT pfnid FROM mlink WHERE mid=:mid))"
          "   AND NOT mlink.isaux"
          " ORDER BY 3 /*sort*/"
        );
        fchngQueryInit = 1;
      }
      db_bind_int(&fchngQuery, ":mid", rid);
      while( db_step(&fchngQuery)==SQLITE_ROW ){
        const char *zFilename = db_column_text(&fchngQuery, 2);
        int isNew = db_column_int(&fchngQuery, 0)<=0;
        int isMergeNew = db_column_int(&fchngQuery, 0)<0;
        int fid = db_column_int(&fchngQuery, 1);
        int isDel = fid==0;
        const char *zOldName = db_column_text(&fchngQuery, 5);
        const char *zOld = db_column_text(&fchngQuery, 4);
        const char *zNew = db_column_text(&fchngQuery, 3);
        const char *zUnpub = "";
        char *zA;
        char *zId;
        if( !inUl ){
          @ <ul class="filelist">
          inUl = 1;
        }
        if( tmFlags & TIMELINE_SHOWRID ){
          int srcId = delta_source_rid(fid);
          if( srcId ){
            zId = mprintf(" (%z%d&larr;%d</a>) ",
                          href("%R/deltachain/%d", fid), fid, srcId);
          }else{
            zId = mprintf(" (%z%d</a>) ",
                          href("%R/deltachain/%d", fid), fid);
          }
        }else{
          zId = fossil_strdup("");
        }
        if( (tmFlags & TIMELINE_FRENAMES)!=0 ){
          if( !isNew && !isDel && zOldName!=0 ){
            @ <li> %h(zOldName) &rarr; %h(zFilename)%s(zId)
          }
          continue;
        }
        zA = href("%R/artifact/%!S",fid?zNew:zOld);
        if( content_is_private(fid) ){
          zUnpub = UNPUB_TAG;
        }
        if( isNew ){
          @ <li> %s(zA)%h(zFilename)</a>%s(zId) %s(zUnpub)
          if( isMergeNew ){
            @ (added by merge)
          }else{
            @ (new file)
          }
          @ &nbsp; %z(href("%R/artifact/%!S",zNew))[view]</a></li>
        }else if( isDel ){
          @ <li> %s(zA)%h(zFilename)</a> (deleted)</li>
        }else if( fossil_strcmp(zOld,zNew)==0 && zOldName!=0 ){
          @ <li> %h(zOldName) &rarr; %s(zA)%h(zFilename)</a>%s(zId)
          @ %s(zUnpub) %z(href("%R/artifact/%!S",zNew))[view]</a></li>
        }else{
          if( zOldName!=0 ){
            @ <li>%h(zOldName) &rarr; %s(zA)%h(zFilename)%s(zId)</a> %s(zUnpub)
          }else{
            @ <li>%s(zA)%h(zFilename)</a>%s(zId) &nbsp; %s(zUnpub)
          }
          @ %z(href("%R/fdiff?v1=%!S&v2=%!S",zOld,zNew))[diff]</a></li>
        }
        fossil_free(zA);
        fossil_free(zId);
      }
      db_reset(&fchngQuery);
      if( inUl ){
    @ </td></tr>
  }
        @ </ul>
      }
    }

    /* Show the complete text of forum messages */
    if( (tmFlags & (TIMELINE_FORUMTXT))!=0
     && zType[0]=='f' && g.perm.Hyperlink
     && (!content_is_private(rid) || g.perm.ModForum)
    ){
      Manifest *pPost = manifest_get(rid, CFTYPE_FORUM, 0);
      if( pPost ){
        const char *zClass = "forumTimeline";
        if( forum_rid_has_been_edited(rid) ){
          zClass = "forumTimeline forumObs";
        }
        forum_render(0, pPost->zMimetype, pPost->zWiki, zClass, 1);
        manifest_destroy(pPost);
      }
    }
  }
  if( suppressCnt ){
    @ <tr><td><td><td>
    @ <small><i>... %d(suppressCnt) similar
    @ event%s(suppressCnt>1?"s":"") omitted.</i></small></tr>
    @ <span class="timelineDisabled">... %d(suppressCnt) similar
    @ event%s(suppressCnt>1?"s":"") omitted.</span>
    suppressCnt = 0;
  }
  if( pendingEndTr ){
    @ </td></tr>
  }
  if( pGraph ){
    graph_finish(pGraph, (tmFlags & TIMELINE_DISJOINT)!=0);
    graph_finish(pGraph, zLeftBranch, tmFlags);
    if( pGraph->nErr ){
      graph_free(pGraph);
      pGraph = 0;
    }else{
      @ <tr class="timelineBottom" id="btm-%d(iTableId)">\
      @ <tr><td><td><div style="width:%d(pGraph->mxRail*20+30)px;"></div>
      @ <td></td><td></td><td></td></tr>
    }
  }
  @ </table>
  if( fchngQueryInit ) db_finalize(&fchngQuery);
  timeline_output_graph_javascript(pGraph);
  timeline_output_graph_javascript(pGraph, tmFlags, iTableId);
}

/*
** Change the RGB background color given in the argument in a foreground
** color with the same hue.
*/
static const char *bg_to_fg(const char *zIn){
  int i;
  unsigned int x[3];
  unsigned int mx = 0;
  static int whiteFg = -1;
  static char zRes[10];
  if( strlen(zIn)!=7 || zIn[0]!='#' ) return zIn;
  zIn++;
  for(i=0; i<3; i++){
    x[i] = hex_digit_value(zIn[0])*16 + hex_digit_value(zIn[1]);
    zIn += 2;
    if( x[i]>mx ) mx = x[i];
  }
  if( whiteFg<0 ) whiteFg = skin_detail_boolean("white-foreground");
  if( whiteFg ){
    /* Make the color lighter */
    static const unsigned int t = 215;
    if( mx<t ) for(i=0; i<3; i++) x[i] += t - mx;
  }else{
    /* Make the color darker */
    static const unsigned int t = 128;
    if( mx>t ){
      for(i=0; i<3; i++){
        x[i] = x[i]>=mx-t ? x[i] - (mx-t) : 0;
      }
    }
  }
  sqlite3_snprintf(sizeof(zRes),zRes,"#%02x%02x%02x",x[0],x[1],x[2]);
  return zRes;
}

/*
** Generate all of the necessary javascript to generate a timeline
** graph.
*/
void timeline_output_graph_javascript(GraphContext *pGraph){
void timeline_output_graph_javascript(
  GraphContext *pGraph,     /* The graph to be displayed */
  int tmFlags,              /* Flags that control rendering */
  int iTableId              /* Which graph is this for */
){
  if( pGraph && pGraph->nErr==0 ){
    GraphRow *pRow;
    int i;
    char cSep;
    @ <script type="text/JavaScript">
    cgi_printf("var rowinfo = [\n");
    for(pRow=pGraph->pFirst; pRow; pRow=pRow->pNext){
    int iRailPitch;      /* Pixels between consecutive rails */
    int showArrowheads;  /* True to draw arrowheads.  False to omit. */
    int circleNodes;     /* True for circle nodes.  False for square nodes */
    int colorGraph;      /* Use colors for graph lines */
      cgi_printf("{id:\"m%d\",bg:\"%s\",r:%d,d:%d,mo:%d,mu:%d,u:%d,au:",
        pRow->idx,
        pRow->zBgClr,
    int iTopRow;         /* Index of the top row of the graph */
    int fileDiff;        /* True for file diff.  False for check-in diff */
        pRow->iRail,
        pRow->bDescender,
        pRow->mergeOut,
        pRow->mergeUpto,
        pRow->aiRaiser[pRow->iRail]
    int omitDescenders;  /* True to omit descenders */
    int scrollToSelect;  /* True to scroll to the selection */
    int dwellTimeout;    /* Milliseconds to wait for tooltips to show */
    int closeTimeout;    /* Milliseconds to wait for tooltips to close */
    u8 *aiMap;           /* The rail map */
      );
      cSep = '[';
      for(i=0; i<GR_MAX_RAIL; i++){
        if( i==pRow->iRail ) continue;
        if( pRow->aiRaiser[i]>0 ){
          cgi_printf("%c%d,%d", cSep, pGraph->railMap[i], pRow->aiRaiser[i]);
          cSep = ',';
        }
      }
      if( cSep=='[' ) cgi_printf("[");
      cgi_printf("],mi:");
      cSep = '[';
      for(i=0; i<GR_MAX_RAIL; i++){
        if( pRow->mergeIn & (1<<i) ){
          cgi_printf("%c%d", cSep, pGraph->railMap[i]);
          cSep = ',';
        }

      }
      if( cSep=='[' ) cgi_printf("[");
      cgi_printf("]}%s", pRow->pNext ? ",\n" : "];\n");
    iRailPitch = atoi(PD("railpitch","0"));
    showArrowheads = skin_detail_boolean("timeline-arrowheads");
    circleNodes = skin_detail_boolean("timeline-circle-nodes");
    colorGraph = skin_detail_boolean("timeline-color-graph-lines");
    iTopRow = pGraph->pFirst ? pGraph->pFirst->idx : 0;
    omitDescenders = (tmFlags & TIMELINE_DISJOINT)!=0;
    fileDiff = (tmFlags & TIMELINE_FILEDIFF)!=0;
    scrollToSelect = (tmFlags & TIMELINE_NOSCROLL)==0;
    }
    cgi_printf("var nrail = %d\n", pGraph->mxRail+1);
    graph_free(pGraph);
    @ var canvasDiv = document.getElementById("canvas");
    @ var realCanvas = null;
    @ function drawBox(color,x0,y0,x1,y1){
    @   var n = document.createElement("div");
    @   if( x0>x1 ){ var t=x0; x0=x1; x1=t; }
    @   if( y0>y1 ){ var t=y0; y0=y1; y1=t; }
    @   var w = x1-x0+1;
    @   var h = y1-y0+1;
    @   n.style.position = "absolute";
    @   n.style.overflow = "hidden";
    @   n.style.left = x0+"px";
    @   n.style.top = y0+"px";
    @   n.style.width = w+"px";
    @   n.style.height = h+"px";
    @   n.style.backgroundColor = color;
    dwellTimeout = atoi(db_get("timeline-dwelltime","100"));
    closeTimeout = atoi(db_get("timeline-closetime","250"));
    @ <script id='timeline-data-%d(iTableId)' type='application/json'>{
    @   "iTableId": %d(iTableId),
    @   "circleNodes": %d(circleNodes),
    @   "showArrowheads": %d(showArrowheads),
    @   "iRailPitch": %d(iRailPitch),
    @   "colorGraph": %d(colorGraph),
    @   "nomo": %d(PB("nomo")),
    @   "iTopRow": %d(iTopRow),
    @   "omitDescenders": %d(omitDescenders),
    @   "fileDiff": %d(fileDiff),
    @   "scrollToSelect": %d(scrollToSelect),
    @   "nrail": %d(pGraph->mxRail+1),
    @   "baseUrl": "%R",
    @   "dwellTimeout": %d(dwellTimeout),
    @   "closeTimeout": %d(closeTimeout),
    @   "hashDigits": %d(hash_digits(1)),
    @   "bottomRowId": "btm-%d(iTableId)",
    if( pGraph->nRow==0 ){
      @   "rowinfo": null
    }else{
      @   "rowinfo": [
    }

    /* the rowinfo[] array contains all the information needed to generate
    ** the graph.  Each entry contains information for a single row:
    **
    **   id:  The id of the <div> element for the row. This is an integer.
    **        to get an actual id, prepend "m" to the integer.  The top node
    **        is iTopRow and numbers increase moving down the timeline.
    **   bg:  The background color for this row
    @   canvasDiv.appendChild(n);
    @ }
    @ function absoluteY(id){
    @   var obj = document.getElementById(id);
    @   if( !obj ) return;
    @   var top = 0;
    @   if( obj.offsetParent ){
    @     do{
    @       top += obj.offsetTop;
    @     }while( obj = obj.offsetParent );
    @   }
    @   return top;
    @ }
    @ function absoluteX(id){
    @   var obj = document.getElementById(id);
    **    r:  The "rail" that the node for this row sits on.  The left-most
    **        rail is 0 and the number increases to the right.
    **    d:  If exists and true then there is a "descender" - an arrow
    **        coming from the bottom of the page or further down on the page
    **        straight up to this node.
    **   mo:  "merge-out".  If it exists, this is the rail position
    **        for the upward portion of a merge arrow.  The merge arrow goes as
    **        a solid normal merge line up to the row identified by "mu" and
    **        then as a dashed cherrypick merge line up further to "cu".
    **        If this value is omitted if there are no merge children.
    **   mu:  The id of the row which is the top of the merge-out arrow.
    @   if( !obj ) return;
    @   var left = 0;
    @   if( obj.offsetParent ){
    @     do{
    @       left += obj.offsetLeft;
    @     }while( obj = obj.offsetParent );
    @   }
    @   return left;
    @ }
    @ function drawUpArrow(x,y0,y1){
    @   drawBox("black",x,y0,x+1,y1);
    @   if( y0+8>=y1 ){
    @     drawBox("black",x-1,y0+1,x+2,y0+2);
    @     drawBox("black",x-2,y0+3,x+3,y0+4);
    @   }else{
    @     drawBox("black",x-1,y0+2,x+2,y0+4);
    @     drawBox("black",x-2,y0+5,x+3,y0+7);
    @   }
    @ }
    @ function drawThinArrow(y,xFrom,xTo){
    @   if( xFrom<xTo ){
    @     drawBox("black",xFrom,y,xTo,y);
    @     drawBox("black",xTo-4,y-1,xTo-2,y+1);
    @     if( xTo>xFrom-8 ) drawBox("black",xTo-6,y-2,xTo-5,y+2);
    @   }else{
    **        Only exists if "mo" exists.
    **   cu:  Extend the mu merge arrow up to this row as a cherrypick
    **        merge line, if this value exists.
    **    u:  Draw a thick child-line out of the top of this node and up to
    **        the node with an id equal to this value.  0 if it is straight to
    **        the top of the page or just up a little ways, -1 if there is
    **        no thick-line riser (if the node is a leaf).
    **   sb:  Draw a dotted child-line out of the top of this node up to the
    **        node with the id equal to the value.  This is like "u" except
    **        that the line is dotted instead of solid and has no arrow.
    **        Mnemonic: "Same Branch".
    **    f:  0x01: a leaf node, 0x02: a closed leaf node.
    **   au:  An array of integers that define thick-line risers for branches.
    **        The integers are in pairs.  For each pair, the first integer is
    **        is the rail on which the riser should run and the second integer
    **        is the id of the node upto which the riser should run. If there
    **        are no risers, this array does not exist.
    **   mi:  "merge-in".  An array of integer rail positions from which
    **        merge arrows should be drawn into this node.  If the value is
    **        negative, then the rail position is -1-mi[] and a thin merge-arrow
    **        descender is drawn to the bottom of the screen. This array is
    **        omitted if there are no inbound merges.
    **   ci:  "cherrypick-in". Like "mi" except for cherrypick merges.
    @     drawBox("black",xTo,y,xFrom,y);
    @     drawBox("black",xTo+2,y-1,xTo+4,y+1);
    @     if( xTo+8<xFrom ) drawBox("black",xTo+5,y-2,xTo+6,y+2);
    @   }
    @ }
    **        omitted if there are no cherrypick merges.
    **    h:  The artifact hash of the object being graphed
    *    br:  The branch to which the artifact belongs
    @ function drawThinLine(x0,y0,x1,y1){
    @   drawBox("black",x0,y0,x1,y1);
    @ }
    */
    aiMap = pGraph->aiRailMap;
    for(pRow=pGraph->pFirst; pRow; pRow=pRow->pNext){
      int k = 0;
    @ function drawNode(p, left, btm){
    @   drawBox("black",p.x-5,p.y-5,p.x+6,p.y+6);
    @   drawBox(p.bg,p.x-4,p.y-4,p.x+5,p.y+5);
      cgi_printf("{\"id\":%d,",     pRow->idx);
      cgi_printf("\"bg\":\"%s\",",  pRow->zBgClr);
    @   if( p.u>0 ){
    @     var u = rowinfo[p.u-1];
      cgi_printf("\"r\":%d,",       pRow->iRail>=0 ? aiMap[pRow->iRail] : -1);
    @     drawUpArrow(p.x, u.y+6, p.y-5);
    @   }
    @   if( p.d ){
    @     drawUpArrow(p.x, p.y+6, btm);
      if( pRow->bDescender ){
        cgi_printf("\"d\":%d,",       pRow->bDescender);
    @   } 
    @   if( p.mo>=0 ){
    @     var x1 = p.mo*20 + left;
    @     var y1 = p.y-3;
    @     var x0 = x1>p.x ? p.x+7 : p.x-6;
    @     var u = rowinfo[p.mu-1];
    @     var y0 = u.y+5;
      }
      if( pRow->mergeOut>=0 ){
        cgi_printf("\"mo\":%d,",      aiMap[pRow->mergeOut]);
        if( pRow->mergeUpto==0 ) pRow->mergeUpto = pRow->idx;
        cgi_printf("\"mu\":%d,",      pRow->mergeUpto);
        if( pRow->cherrypickUpto>0 && pRow->cherrypickUpto<=pRow->mergeUpto ){
          cgi_printf("\"cu\":%d,",    pRow->cherrypickUpto);
        }
      }
      if( pRow->isStepParent ){
    @     drawThinLine(x0,y1,x1,y1);
    @     drawThinLine(x1,y0,x1,y1);
    @   }
    @   var n = p.au.length;
        cgi_printf("\"sb\":%d,",      pRow->aiRiser[pRow->iRail]);
      }else{
        cgi_printf("\"u\":%d,",       pRow->aiRiser[pRow->iRail]);
    @   for(var i=0; i<n; i+=2){
    @     var x1 = p.au[i]*20 + left;
    @     var x0 = x1>p.x ? p.x+7 : p.x-6;
    @     drawBox("black",x0,p.y,x1,p.y+1);
    @     var u = rowinfo[p.au[i+1]-1];
    @     drawUpArrow(x1, u.y+6, p.y);
    @   }
    @   for(var j in p.mi){
      }
      k = 0;
      if( pRow->isLeaf ) k |= 1;
      if( pRow->isLeaf & 2) k |= 2;
      cgi_printf("\"f\":%d,",k);
      for(i=k=0; i<GR_MAX_RAIL; i++){
        if( i==pRow->iRail ) continue;
        if( pRow->aiRiser[i]>0 ){
    @     var y0 = p.y+5;
    @     var mx = p.mi[j]*20 + left;
    @     if( mx>p.x ){
          if( k==0 ){
    @       drawThinArrow(y0,mx,p.x+5);
    @     }else{
    @       drawThinArrow(y0,mx,p.x-5);
    @     }
    @   }
    @ }
            cgi_printf("\"au\":");
            cSep = '[';
          }
          k++;
          cgi_printf("%c%d,%d", cSep, aiMap[i], pRow->aiRiser[i]);
          cSep = ',';
        }
      }
      if( k ){
    @ function renderGraph(){
    @   var canvasDiv = document.getElementById("canvas");
    @   while( canvasDiv.hasChildNodes() ){
    @     canvasDiv.removeChild(canvasDiv.firstChild);
    @   }
        cgi_printf("],");
      }
      if( colorGraph && pRow->zBgClr[0]=='#' ){
        cgi_printf("\"fg\":\"%s\",", bg_to_fg(pRow->zBgClr));
      }
      /* mi */
    @   var canvasY = absoluteY("canvas");
    @   var left = absoluteX(rowinfo[0].id) - absoluteX("canvas") + 15;
    @   var width = nrail*20;
    @   for(var i in rowinfo){
      for(i=k=0; i<GR_MAX_RAIL; i++){
    @     rowinfo[i].y = absoluteY(rowinfo[i].id) + 10 - canvasY;
    @     rowinfo[i].x = left + rowinfo[i].r*20;
    @   }
    @   var btm = rowinfo[rowinfo.length-1].y + 20;
    @   if( btm<32768 ){
    @     canvasDiv.innerHTML = '<canvas id="timeline-canvas" '+
        if( pRow->mergeIn[i]==1 ){
          int mi = aiMap[i];
          if( (pRow->mergeDown >> i) & 1 ) mi = -1-mi;
          if( k==0 ){
            cgi_printf("\"mi\":");
    @        'style="position:absolute;left:'+(left-5)+'px;"' +
    @        ' width="'+width+'" height="'+btm+'"></canvas>';
    @     realCanvas = document.getElementById('timeline-canvas');
    @   }else{
    @     realCanvas = 0;
    @   }
    @   var context;
            cSep = '[';
          }
          k++;
          cgi_printf("%c%d", cSep, mi);
          cSep = ',';
        }
      }
      if( k ) cgi_printf("],");
      /* ci */
    @   if( realCanvas && realCanvas.getContext
    @        && (context = realCanvas.getContext('2d'))) {
    @     drawBox = function(color,x0,y0,x1,y1) {
      for(i=k=0; i<GR_MAX_RAIL; i++){
    @       if( y0>32767 || y1>32767 ) return;
    @       if( x0>x1 ){ var t=x0; x0=x1; x1=t; }
        if( pRow->mergeIn[i]==2 ){
    @       if( y0>y1 ){ var t=y0; y0=y1; y1=t; }
    @       if(isNaN(x0) || isNaN(y0) || isNaN(x1) || isNaN(y1)) return;
    @       context.fillStyle = color;
    @       context.fillRect(x0-left+5,y0,x1-x0+1,y1-y0+1);
    @     };
    @   }
    @   for(var i in rowinfo){
    @     drawNode(rowinfo[i], left, btm);
          int mi = aiMap[i];
    @   }
    @ }
    @ var lastId = rowinfo[rowinfo.length-1].id;
    @ var lastY = 0;
          if( (pRow->cherrypickDown >> i) & 1 ) mi = -mi;
    @ function checkHeight(){
    @   var h = absoluteY(lastId);
    @   if( h!=lastY ){
          if( k==0 ){
    @     renderGraph();
    @     lastY = h;
            cgi_printf("\"ci\":");
            cSep = '[';
    @   }
    @   setTimeout("checkHeight();", 1000);
    @ }
    @ checkHeight();
    @ </script>
          }
          k++;
          cgi_printf("%c%d", cSep, mi);
          cSep = ',';
        }
      }
      if( k ) cgi_printf("],");
      cgi_printf("\"br\":\"%j\",", pRow->zBranch ? pRow->zBranch : "");
      cgi_printf("\"h\":\"%!S\"}%s",
                 pRow->zUuid, pRow->pNext ? ",\n" : "]\n");
    }
    @ }</script>
    builtin_request_js("graph.js");
    builtin_request_js("copybtn.js"); /* Required by graph.js */
    graph_free(pGraph);
  }
}

/*
** Create a temporary table suitable for storing timeline data.
*/
static void timeline_temp_table(void){
  static const char zSql[] = 
  static const char zSql[] =
    @ CREATE TEMP TABLE IF NOT EXISTS timeline(
    @   rid INTEGER PRIMARY KEY,
    @   uuid TEXT,
    @   timestamp TEXT,
    @   comment TEXT,
    @   user TEXT,
    @   isleaf BOOLEAN,
    @   bgcolor TEXT,
    @   etype TEXT,
    @   taglist TEXT,
    @   tagid INTEGER,
    @   short TEXT
    @   short TEXT,
    @   sortby REAL
    @ )
  ;
  db_multi_exec(zSql);
  db_multi_exec("%s", zSql/*safe-for-%s*/);
}

/*
** Return a pointer to a constant string that forms the basis
** for a timeline query for the WWW interface.
*/
const char *timeline_query_for_www(void){
  static char *zBase = 0;
  static const char zBaseSql[] =
  static const char zBase[] =
    @ SELECT
    @   blob.rid,
    @   uuid,
    @   datetime(event.mtime,'localtime') AS timestamp,
    @   coalesce(ecomment, comment),
    @   coalesce(euser, user),
    @   blob.rid AS blobRid,
    @   uuid AS uuid,
    @   datetime(event.mtime,toLocal()) AS timestamp,
    @   coalesce(ecomment, comment) AS comment,
    @   coalesce(euser, user) AS user,
    @   NOT EXISTS(SELECT 1 FROM plink
    @               WHERE pid=blob.rid
    @   blob.rid IN leaf AS leaf,
    @                AND coalesce((SELECT value FROM tagxref
    @                              WHERE tagid=%d AND rid=plink.pid), 'trunk')
    @                  = coalesce((SELECT value FROM tagxref
    @                              WHERE tagid=%d AND rid=plink.cid), 'trunk')),
    @   bgcolor,
    @   event.type,
    @   bgcolor AS bgColor,
    @   event.type AS eventType,
    @   (SELECT group_concat(substr(tagname,5), ', ') FROM tag, tagxref
    @     WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0),
    @   tagid,
    @   brief
    @  FROM event JOIN blob 
    @       AND tagxref.rid=blob.rid AND tagxref.tagtype>0) AS tags,
    @   tagid AS tagid,
    @   brief AS brief,
    @   event.mtime AS mtime
    @  FROM event CROSS JOIN blob
    @ WHERE blob.rid=event.objid
  ;
  if( zBase==0 ){
    zBase = mprintf(zBaseSql, TAG_BRANCH, TAG_BRANCH);
  }
  return zBase;
}

/*
** Convert a symbolic name used as an argument to the a=, b=, or c=
** Generate a submenu element with a single parameter change.
** query parameters of timeline into a julianday mtime value.
*/
double symbolic_name_to_mtime(const char *z, const char **pzDisplay){
static void timeline_submenu(
  double mtime;
  HQuery *pUrl,            /* Base URL */
  const char *zMenuName,   /* Submenu name */
  int rid;
  const char *zDate;
  const char *zParam,      /* Parameter value to add or change */
  const char *zValue,      /* Value of the new parameter */
  const char *zRemove      /* Parameter to omit */
){
  if( z==0 ) return -1.0;
  if( fossil_isdate(z) ){
    mtime = db_double(0.0, "SELECT julianday(%Q,fromLocal())", z);
    if( mtime>0.0 ) return mtime;
  }
  zDate = fossil_expand_datetime(z, 1);
  if( zDate!=0 ){
    mtime = db_double(0.0, "SELECT julianday(%Q,fromLocal())",
                      fossil_roundup_date(zDate));
    if( mtime>0.0 ){
      if( pzDisplay ) *pzDisplay = fossil_strdup(zDate);
      return mtime;
    }
  }
  rid = symbolic_name_to_rid(z, "*");
  if( rid ){
    mtime = db_double(0.0, "SELECT mtime FROM event WHERE objid=%d", rid);
  }else{
    mtime = db_double(-1.0,
        "SELECT max(event.mtime) FROM event, tag, tagxref"
        " WHERE tag.tagname GLOB 'event-%q*'"
        "   AND tagxref.tagid=tag.tagid AND tagxref.tagtype"
        "   AND event.objid=tagxref.rid",
        z
    );
  style_submenu_element(zMenuName, zMenuName, "%s",
                        url_render(pUrl, zParam, zValue, zRemove, 0));
}

  }
  return mtime;
}

/*
** zDate is a localtime date.  Insert records into the
** "timeline" table to cause <hr> to be inserted before and after
** entries of that date.
** "timeline" table to cause <hr> to be inserted on zDate.
*/
static int timeline_add_divider(double rDate){
  int rid = db_int(-1,
    "SELECT rid FROM timeline ORDER BY abs(sortby-%.16g) LIMIT 1", rDate
  );
  if( rid>0 ) return rid;
  db_multi_exec(
    "INSERT INTO timeline(rid,sortby,etype) VALUES(-1,%.16g,'div')",
    rDate
  );
  return -1;
}

/*
** Return all possible names for file zUuid.
*/
char *names_of_file(const char *zUuid){
  Stmt q;
  Blob out;
  const char *zSep = "";
  db_prepare(&q,
    "SELECT DISTINCT filename.name FROM mlink, filename"
    " WHERE mlink.fid=(SELECT rid FROM blob WHERE uuid=%Q)"
    "   AND filename.fnid=mlink.fnid",
    zUuid
  );
  blob_zero(&out);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFN = db_column_text(&q, 0);
    blob_appendf(&out, "%s%z%h</a>", zSep,
          href("%R/finfo?name=%t&m=%!S", zFN, zUuid), zFN);
    zSep = " or ";
  }
  db_finalize(&q);
  return blob_str(&out);
}


/*
** Add the select/option box to the timeline submenu that is used to
** set the y= parameter that determines which elements to display
** on the timeline.
*/
static void timeline_y_submenu(int isDisabled){
  static int i = 0;
  static const char *az[16];
  if( i==0 ){
    az[0] = "all";
    az[1] = "Any Type";
    i = 2;
    if( g.perm.Read ){
      az[i++] = "ci";
      az[i++] = "Check-ins";
      az[i++] = "g";
      az[i++] = "Tags";
    }
    if( g.perm.RdWiki ){
      az[i++] = "e";
      az[i++] = "Tech Notes";
    }
    if( g.perm.RdTkt ){
      az[i++] = "t";
      az[i++] = "Tickets";
      az[i++] = "n";
      az[i++] = "New Tickets";
    }
    if( g.perm.RdWiki ){
      az[i++] = "w";
      az[i++] = "Wiki";
    }
    if( g.perm.RdForum ){
      az[i++] = "f";
      az[i++] = "Forum";
    }
    assert( i<=count(az) );
  }
  if( i>2 ){
    style_submenu_multichoice("y", i/2, az, isDisabled);
  }
}

/*
** Return the default value for the "ss" cookie or query parameter.
** The "ss" cookie determines the graph style.  See the
** timeline_view_styles[] global constant for a list of choices.
*/
const char *timeline_default_ss(void){
  static const char *zSs = 0;
  if( zSs==0 ) zSs = db_get("timeline-default-style","m");
  return zSs;
}

/*
** Convert the current "ss" display preferences cookie into an
** appropriate TIMELINE_* flag
*/
int timeline_ss_cookie(void){
  int tmFlags;
  const char *v = cookie_value("ss",0);
  if( v==0 ) v = timeline_default_ss();
  switch( v[0] ){
    case 'c':  tmFlags = TIMELINE_COMPACT;  break;
    case 'v':  tmFlags = TIMELINE_VERBOSE;  break;
    case 'j':  tmFlags = TIMELINE_COLUMNAR; break;
    case 'x':  tmFlags = TIMELINE_CLASSIC;  break;
    default:   tmFlags = TIMELINE_MODERN;   break;
  }
  return tmFlags;
}

/* Available timeline display styles, together with their y= query
** parameter names.
*/
const char *const timeline_view_styles[] = {
  "m", "Modern View",
  "j", "Columnar View",
  "c", "Compact View",
  "v", "Verbose View",
  "x", "Classic View",
};
#if INTERFACE
# define N_TIMELINE_VIEW_STYLE 5
#endif

/*
** Add the select/option box to the timeline submenu that is used to
** set the ss= parameter that determines the viewing mode.
**
** Return the TIMELINE_* value appropriate for the view-style.
*/
int timeline_ss_submenu(void){
  cookie_link_parameter("ss","ss",timeline_default_ss());
  style_submenu_multichoice("ss",
              N_TIMELINE_VIEW_STYLE,
              timeline_view_styles, 0);
  return timeline_ss_cookie();
}
static void timeline_add_dividers(const char *zDate){
  db_multi_exec(
    "INSERT INTO timeline(rid,timestamp,etype)"
    "VALUES(-1,datetime(%Q,'-1 second') || '.9','div')",
    zDate
  );
  db_multi_exec(
    "INSERT INTO timeline(rid,timestamp,etype)"
    "VALUES(-2,datetime(%Q) || '.1','div')",
     zDate
  );

/*
** If the zChng string is not NULL, then it should be a comma-separated
** list of glob patterns for filenames.  Add an term to the WHERE clause
** for the SQL statement under construction that excludes any check-in that
** does not modify one or more files matching the globs.
*/
static void addFileGlobExclusion(
  const char *zChng,        /* The filename GLOB list */
  Blob *pSql                /* The SELECT statement under construction */
){
  if( zChng==0 || zChng[0]==0 ) return;
  blob_append_sql(pSql," AND event.objid IN ("
      "SELECT mlink.mid FROM mlink, filename"
      " WHERE mlink.fnid=filename.fnid AND %s)",
      glob_expr("filename.name", mprintf("\"%s\"", zChng)));
}
static void addFileGlobDescription(
  const char *zChng,        /* The filename GLOB list */
  Blob *pDescription        /* Result description */
){
  if( zChng==0 || zChng[0]==0 ) return;
  blob_appendf(pDescription, " that include changes to files matching '%h'",
               zChng);
}

/*
** Tag match expression type code.
*/
typedef enum {
  MS_EXACT,   /* Matches a single tag by exact string comparison. */
  MS_GLOB,    /* Matches tags against a list of GLOB patterns. */
  MS_LIKE,    /* Matches tags against a list of LIKE patterns. */
  MS_REGEXP,  /* Matches tags against a list of regular expressions. */
  MS_BRLIST,  /* Same as REGEXP, except the regular expression is a list
              ** of branch names */
} MatchStyle;

/*
** Quote a tag string by surrounding it with double quotes and preceding
** internal double quotes and backslashes with backslashes.
*/
static const char *tagQuote(
   int len,         /* Maximum length of zTag, or negative for unlimited */
   const char *zTag /* Tag string */
){
  Blob blob = BLOB_INITIALIZER;
  int i, j;
  blob_zero(&blob);
  blob_append(&blob, "\"", 1);
  for( i=j=0; zTag[j] && (len<0 || j<len); ++j ){
    if( zTag[j]=='\"' || zTag[j]=='\\' ){
      if( j>i ){
        blob_append(&blob, zTag+i, j-i);
      }
      blob_append(&blob, "\\", 1);
      i = j;
    }
  }
  if( j>i ){
    blob_append(&blob, zTag+i, j-i);
  }
  blob_append(&blob, "\"", 1);
  return blob_str(&blob);
}

/*
** Construct the tag match SQL expression.
**
** This function is adapted from glob_expr() to support the MS_EXACT, MS_GLOB,
** MS_LIKE, MS_REGEXP, and MS_BRLIST match styles.
**
** For MS_EXACT, the returned expression
** checks for integer match against the tag ID which is looked up directly by
** this function.  For the other modes, the returned SQL expression performs
** string comparisons against the tag names, so it is necessary to join against
** the tag table to access the "tagname" column.
**
** Each pattern is adjusted to to start with "sym-" and be anchored at end.
**
** In MS_REGEXP mode, backslash can be used to protect delimiter characters.
** The backslashes are not removed from the regular expression.
**
** In addition to assembling and returning an SQL expression, this function
** makes an English-language description of the patterns being matched, suitable
** for display in the web interface.
**
** If any errors arise during processing, *zError is set to an error message.
** Otherwise it is set to NULL.
*/
static const char *tagMatchExpression(
  MatchStyle matchStyle,        /* Match style code */
  const char *zTag,             /* Tag name, match pattern, or pattern list */
  const char **zDesc,           /* Output expression description string */
  const char **zError           /* Output error string */
){
  Blob expr = BLOB_INITIALIZER; /* SQL expression string assembly buffer */
  Blob desc = BLOB_INITIALIZER; /* English description of match patterns */
  Blob err = BLOB_INITIALIZER;  /* Error text assembly buffer */
  const char *zStart;           /* Text at start of expression */
  const char *zDelimiter;       /* Text between expression terms */
  const char *zEnd;             /* Text at end of expression */
  const char *zPrefix;          /* Text before each match pattern */
  const char *zSuffix;          /* Text after each match pattern */
  const char *zIntro;           /* Text introducing pattern description */
  const char *zPattern = 0;     /* Previous quoted pattern */
  const char *zFail = 0;        /* Current failure message or NULL if okay */
  const char *zOr = " or ";     /* Text before final quoted pattern */
  char cDel;                    /* Input delimiter character */
  int i;                        /* Input match pattern length counter */

  /* Optimize exact matches by looking up the ID in advance to create a simple
   * numeric comparison.  Bypass the remainder of this function. */
  if( matchStyle==MS_EXACT ){
    *zDesc = tagQuote(-1, zTag);
    return mprintf("(tagid=%d)", db_int(-1,
        "SELECT tagid FROM tag WHERE tagname='sym-%q'", zTag));
  }

  /* Decide pattern prefix and suffix strings according to match style. */
  if( matchStyle==MS_GLOB ){
    zStart = "(";
    zDelimiter = " OR ";
    zEnd = ")";
    zPrefix = "tagname GLOB 'sym-";
    zSuffix = "'";
    zIntro = "glob pattern ";
  }else if( matchStyle==MS_LIKE ){
    zStart = "(";
    zDelimiter = " OR ";
    zEnd = ")";
    zPrefix = "tagname LIKE 'sym-";
    zSuffix = "'";
    zIntro = "SQL LIKE pattern ";
  }else if( matchStyle==MS_REGEXP ){
    zStart = "(tagname REGEXP '^sym-(";
    zDelimiter = "|";
    zEnd = ")$')";
    zPrefix = "";
    zSuffix = "";
    zIntro = "regular expression ";
  }else/* if( matchStyle==MS_BRLIST )*/{
    zStart = "tagname IN ('sym-";
    zDelimiter = "','sym-";
    zEnd = "')";
    zPrefix = "";
    zSuffix = "";
    zIntro = "";
  }

  /* Convert the list of matches into an SQL expression and text description. */
  blob_zero(&expr);
  blob_zero(&desc);
  blob_zero(&err);
  while( 1 ){
    /* Skip leading delimiters. */
    for( ; fossil_isspace(*zTag) || *zTag==','; ++zTag );

    /* Next non-delimiter character determines quoting. */
    if( !*zTag ){
      /* Terminate loop at end of string. */
      break;
    }else if( *zTag=='\'' || *zTag=='"' ){
      /* If word is quoted, prepare to stop at end quote. */
      cDel = *zTag;
      ++zTag;
    }else{
      /* If word is not quoted, prepare to stop at delimiter. */
      cDel = ',';
    }

    /* Find the next delimiter character or end of string. */
    for( i=0; zTag[i] && zTag[i]!=cDel; ++i ){
      /* If delimiter is comma, also recognize spaces as delimiters. */
      if( cDel==',' && fossil_isspace(zTag[i]) ){
        break;
      }

      /* In regexp mode, ignore delimiters following backslashes. */
      if( matchStyle==MS_REGEXP && zTag[i]=='\\' && zTag[i+1] ){
        ++i;
      }
    }

    /* Check for regular expression syntax errors. */
    if( matchStyle==MS_REGEXP ){
      ReCompiled *regexp;
      char *zTagDup = fossil_strndup(zTag, i);
      zFail = re_compile(&regexp, zTagDup, 0);
      re_free(regexp);
      fossil_free(zTagDup);
    }

    /* Process success and error results. */
    if( !zFail ){
      /* Incorporate the match word into the output expression.  %q is used to
       * protect against SQL injection attacks by replacing ' with ''. */
      blob_appendf(&expr, "%s%s%#q%s", blob_size(&expr) ? zDelimiter : zStart,
          zPrefix, i, zTag, zSuffix);

      /* Build up the description string. */
      if( !blob_size(&desc) ){
        /* First tag: start with intro followed by first quoted tag. */
        blob_append(&desc, zIntro, -1);
        blob_append(&desc, tagQuote(i, zTag), -1);
      }else{
        if( zPattern ){
          /* Third and subsequent tags: append comma then previous tag. */
          blob_append(&desc, ", ", 2);
          blob_append(&desc, zPattern, -1);
          zOr = ", or ";
        }

        /* Second and subsequent tags: store quoted tag for next iteration. */
        zPattern = tagQuote(i, zTag);
      }
    }else{
      /* On error, skip the match word and build up the error message buffer. */
      if( !blob_size(&err) ){
        blob_append(&err, "Error: ", 7);
      }else{
        blob_append(&err, ", ", 2);
      }
      blob_appendf(&err, "(%s%s: %s)", zIntro, tagQuote(i, zTag), zFail);
    }

    /* Advance past all consumed input characters. */
    zTag += i;
    if( cDel!=',' && *zTag==cDel ){
      ++zTag;
    }
  }

  /* Finalize and extract the pattern description. */
  if( zPattern ){
    blob_append(&desc, zOr, -1);
    blob_append(&desc, zPattern, -1);
  }
  *zDesc = blob_str(&desc);

  /* Finalize and extract the error text. */
  *zError = blob_size(&err) ? blob_str(&err) : 0;

  /* Finalize and extract the SQL expression. */
  if( blob_size(&expr) ){
    blob_append(&expr, zEnd, -1);
    return blob_str(&expr);
  }

  /* If execution reaches this point, the pattern was empty.  Return NULL. */
  return 0;
}

/*
** Similar to fossil_expand_datetime()
**
** Add missing "-" characters into a date/time.  Examples:
**
**       20190419  =>  2019-04-19
**       201904    =>  2019-04
*/
const char *timeline_expand_datetime(const char *zIn){
  static char zEDate[20];
  static const char aPunct[] = { 0, 0, '-', '-', ' ', ':', ':' };
  int n = (int)strlen(zIn);
  int i, j;

  /* Only three forms allowed:
  **   (1)  YYYYMMDD
  **   (2)  YYYYMM
  **   (3)  YYYYWW
  */
  if( n!=8 && n!=6 ) return zIn;

  /* Every character must be a digit */
  for(i=0; fossil_isdigit(zIn[i]); i++){}
  if( i!=n ) return zIn;

  /* Expand the date */
  for(i=j=0; zIn[i]; i++){
    if( i>=4 && (i%2)==0 ){
      zEDate[j++] = aPunct[i/2];
    }
    zEDate[j++] = zIn[i];
  }
  zEDate[j] = 0;

  /* It looks like this may be a date.  Return it with punctuation added. */
  return zEDate;
}

/*
** Find the first check-in encountered with a particular tag
** when moving either forwards are backwards in time from a
** particular starting point (iFrom).  Return the rid of that
** first check-in.  If there are no check-ins in the decendent
** or ancestor set of check-in iFrom that match the tag, then
** return 0.
*/
static int timeline_endpoint(
  int iFrom,         /* Starting point */
  const char *zEnd,  /* Tag we are searching for */   
  int bForward       /* 1: forwards in time (descendents) 0: backwards */
){
  int tagId;
  int endId = 0;
  Stmt q;
  int ans = 0;

  tagId = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'", zEnd);
  if( tagId==0 ){
    endId = symbolic_name_to_rid(zEnd, "ci");
    if( endId==0 ) return 0;
  }
  if( bForward ){
    if( tagId ){
      db_prepare(&q,
        "WITH RECURSIVE dx(id,mtime) AS ("
        "  SELECT %d, event.mtime FROM event WHERE objid=%d"
        "  UNION"
        "  SELECT plink.cid, plink.mtime"
        "    FROM dx, plink"
        "   WHERE plink.pid=dx.id"
        "     AND plink.mtime<=(SELECT max(event.mtime) FROM tagxref, event"
                               " WHERE tagxref.tagid=%d AND tagxref.tagtype>0"
                               " AND event.objid=tagxref.rid)"
        "   ORDER BY plink.mtime)"
        "SELECT id FROM dx, tagxref"
        " WHERE tagid=%d AND tagtype>0 AND rid=id LIMIT 1",
        iFrom, iFrom, tagId, tagId
      );
    }else{
      db_prepare(&q,
        "WITH RECURSIVE dx(id,mtime) AS ("
        "  SELECT %d, event.mtime FROM event WHERE objid=%d"
        "  UNION"
        "  SELECT plink.cid, plink.mtime"
        "    FROM dx, plink"
        "   WHERE plink.pid=dx.id"
        "     AND plink.mtime<=(SELECT mtime FROM event WHERE objid=%d)"
        "   ORDER BY plink.mtime)"
        "SELECT id FROM dx WHERE id=%d",
        iFrom, iFrom, endId, endId
      );
    }
  }else{
    if( tagId ){
      db_prepare(&q,
        "WITH RECURSIVE dx(id,mtime) AS ("
        "  SELECT %d, event.mtime FROM event WHERE objid=%d"
        "  UNION"
        "  SELECT plink.pid, event.mtime"
        "    FROM dx, plink, event"
        "   WHERE plink.cid=dx.id AND event.objid=plink.pid"
        "     AND event.mtime>=(SELECT min(event.mtime) FROM tagxref, event"
                               " WHERE tagxref.tagid=%d AND tagxref.tagtype>0"
                               " AND event.objid=tagxref.rid)"
        "   ORDER BY event.mtime DESC)"
        "SELECT id FROM dx, tagxref"
        " WHERE tagid=%d AND tagtype>0 AND rid=id LIMIT 1",
        iFrom, iFrom, tagId, tagId
      );
    }else{
      db_prepare(&q,
        "WITH RECURSIVE dx(id,mtime) AS ("
        "  SELECT %d, event.mtime FROM event WHERE objid=%d"
        "  UNION"
        "  SELECT plink.pid, event.mtime"
        "    FROM dx, plink, event"
        "   WHERE plink.cid=dx.id AND event.objid=plink.pid"
        "     AND event.mtime>=(SELECT mtime FROM event WHERE objid=%d)"
        "   ORDER BY event.mtime DESC)"
        "SELECT id FROM dx WHERE id=%d",
        iFrom, iFrom, endId, endId
      );
    }
  }
  if( db_step(&q)==SQLITE_ROW ){
    ans = db_column_int(&q, 0);
  }
  db_finalize(&q);
  return ans;
}

/*
** COMMAND: test-endpoint
**
** Usage: fossil test-endpoint BASE TAG ?OPTIONS?
**
** Show the first check-in with TAG that is a descendent or ancestor
** of BASE.  The first descendent checkin is shown by default.  Use
** the --backto to see the first ancestor checkin.
**
** Options:
**
**      --backto            Show ancestor.  Others defaults to descendents.
*/
void timeline_test_endpoint(void){
  int bForward = find_option("backto",0,0)==0;
  int from_rid;
  int ans;
  db_find_and_open_repository(0, 0);
  verify_all_options();
  if( g.argc!=4 ){
    usage("BASE-CHECKIN TAG ?--backto?");
  }
  from_rid = symbolic_name_to_rid(g.argv[2],"ci");
  ans = timeline_endpoint(from_rid, g.argv[3], bForward);
  if( ans ){
    fossil_print("Result: %d (%S)\n", ans, rid_to_uuid(ans));
  }else{
    fossil_print("No path found\n");
  }
}


/*
** WEBPAGE: timeline
**
** Query parameters:
**
**    a=TIMESTAMP    after this date
**    b=TIMESTAMP    before this date.
**    c=TIMESTAMP    "circa" this date.
**    n=COUNT        number of events in output
**    p=RID          artifact RID and up to COUNT parents and ancestors
**    d=RID          artifact RID and up to COUNT descendants
**    t=TAGID        show only check-ins with the given tagid
**    u=USER         only if belonging to this user
**    y=TYPE         'ci', 'w', 't'
**    s=TEXT         string search (comment and brief)
**    ng             Suppress the graph if present
**    a=TIMEORTAG     Show events after TIMEORTAG
**    b=TIMEORTAG     Show events before TIMEORTAG
**    c=TIMEORTAG     Show events that happen "circa" TIMEORTAG
**    cf=FILEHASH     Show events around the time of the first use of
**                    the file with FILEHASH
**    m=TIMEORTAG     Highlight the event at TIMEORTAG, or the closest available
**                    event if TIMEORTAG is not part of the timeline.  If
**                    the t= or r= is used, the m event is added to the timeline
**                    if it isn't there already.
**    x=HASHLIST      Show all check-ins in the comma-separated HASHLIST
**                    in addition to check-ins specified by t= or r=
**    sel1=TIMEORTAG  Highlight the check-in at TIMEORTAG if it is part of
**                    the timeline.  Similar to m= except TIMEORTAG must
**                    match a check-in that is already in the timeline.
**    sel2=TIMEORTAG  Like sel1= but use the secondary highlight.
**    n=COUNT         Maximum number of events. "all" for no limit
**    n1=COUNT        Same as "n" but doesn't set the display-preference cookie
**                       Use "n1=COUNT" for a one-time display change
**    p=CHECKIN       Parents and ancestors of CHECKIN
**                       bt=PRIOR   ... going back to PRIOR
**                       p2=CKIN2   ... use CKIN2 if CHECKIN is not found
**    d=CHECKIN       Children and descendants of CHECKIN
**                       d2=CKIN2        ... Use CKIN2 if CHECKIN is not found
**                       ft=DESCENDANT   ... going forward to DESCENDANT
**    dp=CHECKIN      Same as 'd=CHECKIN&p=CHECKIN'
**    dp2=CKIN2       Same as 'd2=CKIN2&p2=CKIN2'
**    df=CHECKIN      Same as 'd=CHECKIN&n1=all&nd'.  Mnemonic: "Derived From"
**    bt=CHECKIN      "Back To".  Show ancenstors going back to CHECKIN
**                       p=CX       ... from CX back to time of CHECKIN
**                       from=CX    ... shortest path from CX back to CHECKIN
**    ft=CHECKIN      "Forward To":  Show decendents forward to CHECKIN
**                       d=CX       ... from CX up to the time of CHECKIN
**                       from=CX    ... shortest path from CX up to CHECKIN
**    t=TAG           Show only check-ins with the given TAG
**    r=TAG           Show check-ins related to TAG, equivalent to t=TAG&rel
**    tl=TAGLIST      Shorthand for t=TAGLIST&ms=brlist
**    rl=TAGLIST      Shorthand for r=TAGLIST&ms=brlist
**    rel             Show related check-ins as well as those matching t=TAG
**    mionly          Limit rel to show ancestors but not descendants
**    nowiki          Do not show wiki associated with branch or tag
**    ms=MATCHSTYLE   Set tag match style to EXACT, GLOB, LIKE, REGEXP
**    u=USER          Only show items associated with USER
**    y=TYPE          'ci', 'w', 't', 'n', 'e', 'f', or 'all'.
**    ss=VIEWSTYLE    c: "Compact", v: "Verbose", m: "Modern", j: "Columnar",
**                    x: "Classic".
**    advm            Use the "Advanced" or "Busy" menu design.
**    ng              No Graph.
**    ncp             Omit cherrypick merges
**    nd              Do not highlight the focus check-in
**    nsm             Omit the submenu
**    nc              Omit all graph colors other than highlights
**    v               Show details of files changed
**    vfx             Show complete text of forum messages
**    f=CHECKIN       Show family (immediate parents and children) of CHECKIN
**    from=CHECKIN    Path from...
**                       to=CHECKIN      ... to this
**                       to2=CHECKIN     ... backup name if to= doesn't resolve
**                       shortest        ... show only the shortest path
**                       rel             ... also show related checkins
**                       bt=PRIOR        ... path from CHECKIN back to PRIOR
**                       ft=LATER        ... path from CHECKIN forward to LATER
**    uf=FILE_HASH    Show only check-ins that contain the given file version
**                       All qualifying check-ins are shown unless there is
**                       also an n= or n1= query parameter.
**    chng=GLOBLIST   Show only check-ins that involve changes to a file whose
**                       name matches one of the comma-separate GLOBLIST
**    brbg            Background color determined by branch name
**    ubg             Background color determined by user
**    deltabg         Background color red for delta manifests or green
**                    for baseline manifests
**    namechng        Show only check-ins that have filename changes
**    forks           Show only forks and their children
**    cherrypicks     Show all cherrypicks
**    ym=YYYY-MM      Show only events for the given year/month
**    yw=YYYY-WW      Show only events for the given week of the given year
**    yw=YYYY-MM-DD   Show events for the week that includes the given day
**    ymd=YYYY-MM-DD  Show only events on the given day. The use "ymd=now"
**                    to see all changes for the current week.
**    year=YYYY       Show only events on the given year. The use "year=0"
**                    to see all changes for the current year.
**    days=N          Show events over the previous N days
**    datefmt=N       Override the date format:  0=HH:MM, 1=HH:MM:SS,
**                    2=YYYY-MM-DD HH:MM:SS, 3=YYMMDD HH:MM, and 4 means "off".
**    bisect          Show the check-ins that are in the current bisect
**    oldestfirst     Show events oldest first.
**    showid          Show RIDs
**    showsql         Show the SQL text
**
** p= and d= can appear individually or together.  If either p= or d=
** appear, then u=, y=, a=, and b= are ignored.
**
** If a= and b= appear, only a= is used.  If neither appear, the most
** recent events are choosen.
** If both a= and b= appear then both upper and lower bounds are honored.
**
** When multiple time-related filters are used, e.g. ym, yw, and ymd,
** which one(s) is/are applied is unspecified and may change between
** fossil versions.
**
** If n= is missing, the default count is 20.
** CHECKIN or TIMEORTAG can be a check-in hash prefix, or a tag, or the
** name of a branch.
*/
void page_timeline(void){
  Stmt q;                            /* Query used to generate the timeline */
  Blob sql;                          /* text of SQL used to generate timeline */
  Blob desc;                         /* Description of the timeline */
  int nEntry = atoi(PD("n","20"));   /* Max number of entries on timeline */
  int p_rid = name_to_rid(P("p"));   /* artifact p and its parents */
  int d_rid = name_to_rid(P("d"));    /* artifact d and its descendants */
  int nEntry;                        /* Max number of entries on timeline */
  int p_rid;                         /* artifact p and its parents */
  int d_rid;                         /* artifact d and descendants */
  int f_rid;                         /* artifact f and close family */
  const char *zUser = P("u");        /* All entries by this user if not NULL */
  const char *zType = PD("y","all"); /* Type of events.  All if NULL */
  const char *zType;                 /* Type of events to display */
  const char *zAfter = P("a");       /* Events after this time */
  const char *zBefore = P("b");      /* Events before this time */
  const char *zCirca = P("c");       /* Events near this time */
  const char *zMark = P("m");        /* Mark this event or an event this time */
  const char *zTagName = P("t");     /* Show events with this tag */
  const char *zBrName = P("r");      /* Equivalent to t=TAG&rel */
  int related = PB("rel");           /* Show events related to zTagName */
  const char *zMatchStyle = P("ms"); /* Tag/branch match style string */
  MatchStyle matchStyle = MS_EXACT;  /* Match style code */
  const char *zMatchDesc = 0;        /* Tag match expression description text */
  const char *zError = 0;            /* Tag match error string */
  const char *zTagSql = 0;           /* Tag/branch match SQL expression */
  const char *zSearch = P("s");      /* Search string */
  const char *zUses = P("uf");       /* Only show check-ins hold this file */
  const char *zYearMonth = P("ym");  /* Show check-ins for the given YYYY-MM */
  const char *zYearWeek = P("yw");   /* Check-ins for YYYY-WW (week-of-year) */
  char *zYearWeekStart = 0;          /* YYYY-MM-DD for start of YYYY-WW */
  const char *zDay = P("ymd");       /* Check-ins for the day YYYY-MM-DD */
  const char *zYear = P("year");     /* Events for the year YYYY */
  const char *zNDays = P("days");    /* Show events over the previous N days */
  int nDays = 0;                     /* Numeric value for zNDays */
  const char *zChng = P("chng");     /* List of GLOBs for files that changed */
  int useDividers = P("nd")==0;      /* Show dividers if "nd" is missing */
  int renameOnly = P("namechng")!=0; /* Show only check-ins that rename files */
  int forkOnly = PB("forks");        /* Show only forks and their children */
  int bisectLocal = PB("bisect");    /* Show the check-ins of the bisect */
  const char *zBisect = P("bid");    /* Bisect description */
  int cpOnly = PB("cherrypicks");    /* Show all cherrypick checkins */
  int tmFlags = 0;                   /* Timeline flags */
  const char *zThisTag = 0;          /* Suppress links to this tag */
  const char *zThisUser = 0;         /* Suppress links to this user */
  HQuery url;                        /* URL for various branch links */
  int from_rid = name_to_typed_rid(P("from"),"ci"); /* from= for paths */
  const char *zTo2 = 0;
  int to_rid = name_choice("to","to2",&zTo2);    /* to= for path timelines */
  int noMerge = P("shortest")==0;           /* Follow merge links if shorter */
  int me_rid = name_to_typed_rid(P("me"),"ci");  /* me= for common ancestory */
  int you_rid = name_to_typed_rid(P("you"),"ci");/* you= for common ancst */
  int pd_rid;
  const char *zDPName;                /* Value of p=, d=, or dp= params */
  double rBefore, rAfter, rCirca;     /* Boundary times */
  const char *z;
  char *zOlderButton = 0;             /* URL for Older button at the bottom */
  char *zOlderButtonLabel = 0;        /* Label for the Older Button */
  char *zNewerButton = 0;             /* URL for Newer button at the top */
  char *zNewerButtonLabel = 0;        /* Label for the Newer button */
  int selectedRid = 0;                /* Show a highlight on this RID */
  int secondaryRid = 0;               /* Show secondary highlight */
  int disableY = 0;                   /* Disable type selector on submenu */
  int advancedMenu = 0;               /* Use the advanced menu design */
  int tagid;                         /* Tag ID */
  int tmFlags;                       /* Timeline flags */
  char *zPlural;                      /* Ending for plural forms */
  int showCherrypicks = 1;            /* True to show cherrypick merges */
  int haveParameterN;                 /* True if n= query parameter present */
  int from_to_mode = 0;               /* 0: from,to. 1: from,ft 2: from,bt */

  url_initialize(&url, "timeline");
  cgi_query_parameters_to_url(&url);

  (void)P_NoBot("ss")
    /* "ss" is processed via the udc but at least one spider likes to
    ** try to SQL inject via this argument, so let's catch that. */;

  /* Set number of rows to display */
  z = P("n");
  if( z!=0 ){
    haveParameterN = 1;
    cookie_write_parameter("n","n",0);
  }else{
    const char *z2;
    haveParameterN = 0;
    cookie_read_parameter("n","n");
    z = P("n");
    if( z==0 ){
      z = db_get("timeline-default-length",0);
    }
    cgi_replace_query_parameter("n",fossil_strdup(z));
    cookie_write_parameter("n","n",0);
    z2 = P("n1");
    if( z2 ){
      haveParameterN = 2;
      z = z2;
    }
  }
  if( z ){
    if( fossil_strcmp(z,"all")==0 ){
      nEntry = 0;
    }else{
      nEntry = atoi(z);
      if( nEntry<=0 ){
        z = "50";
        nEntry = 50;
      }
    }
  }else{
    nEntry = 50;
  }

  /* Query parameters d=, p=, and f= and variants */
  p_rid = name_choice("p","p2", &zDPName);
  d_rid = name_choice("d","d2", &zDPName);
  z = P("f");
  f_rid = z ? name_to_typed_rid(z,"ci") : 0;
  z = P("df");
  if( z && (d_rid = name_to_typed_rid(z,"ci"))!=0 ){
    nEntry = 0;
    useDividers = 0;
    cgi_replace_query_parameter("d",fossil_strdup(z));
    zDPName = z;
  }

  /* Undocumented query parameter to set JS mode */
  builtin_set_js_delivery_mode(P("jsmode"),1);

  secondaryRid = name_to_typed_rid(P("sel2"),"ci");
  selectedRid = name_to_typed_rid(P("sel1"),"ci");
  if( from_rid!=0 && to_rid!=0 ){
    if( selectedRid==0 ) selectedRid = from_rid;
    if( secondaryRid==0 ) secondaryRid = to_rid;
  }
  tmFlags |= timeline_ss_submenu();
  cookie_link_parameter("advm","advm","0");
  advancedMenu = atoi(PD("advm","0"));

  /* Omit all cherry-pick merge lines if the "ncp" query parameter is
  ** present or if this repository lacks a "cherrypick" table. */
  if( PB("ncp") || !db_table_exists("repository","cherrypick") ){
    showCherrypicks = 0;
  }

  /* To view the timeline, must have permission to read project data.
  */
  pd_rid = name_choice("dp","dp2",&zDPName);
  if( pd_rid ){
    p_rid = d_rid = pd_rid;
  }
  login_check_credentials();
  if( (!g.perm.Read && !g.perm.RdTkt && !g.perm.RdWiki && !g.perm.RdForum)
   || (bisectLocal && !g.perm.Setup)
  ){
    login_needed(g.anon.Read && g.anon.RdTkt && g.anon.RdWiki);
    return;
  }
  if( !bisectLocal ){
    etag_check(ETAG_QUERY|ETAG_COOKIE|ETAG_DATA|ETAG_CONFIG, 0);
  }
  cookie_read_parameter("y","y");
  zType = P("y");
  if( zType==0 ){
    zType = g.perm.Read ? "ci" : "all";
    cgi_set_parameter("y", zType);
  }
  if( zType[0]=='a' ||
      ( g.perm.Read && zType[0]=='c' ) ||
      ( g.perm.RdTkt && (zType[0]=='t' || zType[0]=='n') ) ||
      ( g.perm.RdWiki && (zType[0]=='w' || zType[0]=='e') ) ||
      ( g.perm.RdForum && zType[0]=='f' )
    ){
    cookie_write_parameter("y","y",zType);
  }
  if( !g.okRead && !g.okRdTkt && !g.okRdWiki ){ login_needed(); return; }
  if( zTagName && g.okRead ){
    tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'", zTagName);
  }else{
    tagid = 0;

  /* Convert the cf=FILEHASH query parameter into a c=CHECKINHASH value */
  if( P("cf")!=0 ){
    zCirca = db_text(0,
      "SELECT (SELECT uuid FROM blob WHERE rid=mlink.mid)"
      "  FROM mlink, event"
      " WHERE mlink.fid=(SELECT rid FROM blob WHERE uuid LIKE '%q%%')"
      "   AND event.objid=mlink.mid"
      " ORDER BY event.mtime LIMIT 1",
      P("cf")
    );
  }

  /* Check for tl=TAGLIST and rl=TAGLIST which are abbreviations for
  ** t=TAGLIST&ms=brlist and r=TAGLIST&ms=brlist repectively. */
  if( zBrName==0 && zTagName==0 ){
    const char *z;
    if( (z = P("tl"))!=0 ){
      zTagName = z;
      zMatchStyle = "brlist";
    }
    if( (z = P("rl"))!=0 ){
      zBrName = z;
      zMatchStyle = "brlist";
    }
  }

  /* Convert r=TAG to t=TAG&rel in order to populate the UI style widgets. */
  if( zBrName && !related ){
    cgi_delete_query_parameter("r");
    cgi_set_query_parameter("t", zBrName);  (void)P("t");
    cgi_set_query_parameter("rel", "1");
    zTagName = zBrName;
    related = 1;
    zType = "ci";
  }

  /* Ignore empty tag query strings. */
  if( zTagName && !*zTagName ){
    zTagName = 0;
  }

  /* Finish preliminary processing of tag match queries. */
  if( zTagName ){
    zType = "ci";
    /* Interpet the tag style string. */
    if( fossil_stricmp(zMatchStyle, "glob")==0 ){
      matchStyle = MS_GLOB;
    }else if( fossil_stricmp(zMatchStyle, "like")==0 ){
      matchStyle = MS_LIKE;
    }else if( fossil_stricmp(zMatchStyle, "regexp")==0 ){
      matchStyle = MS_REGEXP;
    }else if( fossil_stricmp(zMatchStyle, "brlist")==0 ){
      matchStyle = MS_BRLIST;
    }else{
      /* For exact maching, inhibit links to the selected tag. */
      zThisTag = zTagName;
      Th_Store("current_checkin", zTagName);
    }

    /* Display a checkbox to enable/disable display of related check-ins. */
    if( advancedMenu ){
      style_submenu_checkbox("rel", "Related", 0, 0);
    }

    /* Construct the tag match expression. */
    zTagSql = tagMatchExpression(matchStyle, zTagName, &zMatchDesc, &zError);
  }

  if( zMark && zMark[0]==0 ){
    if( zAfter ) zMark = zAfter;
    if( zBefore ) zMark = zBefore;
    if( zCirca ) zMark = zCirca;
  }
  if( (zTagSql && db_int(0,"SELECT count(*) "
      "FROM tagxref NATURAL JOIN tag WHERE %s",zTagSql/*safe-for-%s*/)<=nEntry)
  ){
    nEntry = -1;
    zCirca = 0;
  }
  if( zType[0]=='a' ){
    tmFlags = TIMELINE_BRIEF | TIMELINE_GRAPH;
    tmFlags |= TIMELINE_BRIEF | TIMELINE_GRAPH | TIMELINE_CHPICK;
  }else{
    tmFlags = TIMELINE_GRAPH;
    tmFlags |= TIMELINE_GRAPH | TIMELINE_CHPICK;
  }
  if( related ){
    tmFlags |= TIMELINE_FILLGAPS | TIMELINE_XMERGE;
    tmFlags &= ~TIMELINE_DISJOINT;
  }
  if( P("ng")!=0 || zSearch!=0 ){
    tmFlags &= ~TIMELINE_GRAPH;
  if( PB("ncp") ){
    tmFlags &= ~TIMELINE_CHPICK;
  }
  if( PB("ng") || zSearch!=0 ){
    tmFlags &= ~(TIMELINE_GRAPH|TIMELINE_CHPICK);
  }
  if( PB("nsm") ){
    style_submenu_enable(0);
  }
  if( PB("brbg") ){
    tmFlags |= TIMELINE_BRCOLOR;
  }
  if( PB("unhide") ){
    tmFlags |= TIMELINE_UNHIDE;
  }
  if( PB("ubg") ){
    tmFlags |= TIMELINE_UCOLOR;
  }
  if( PB("deltabg") ){
    tmFlags |= TIMELINE_DELTA;
  }
  if( PB("nc") ){
    tmFlags &= ~(TIMELINE_DELTA|TIMELINE_BRCOLOR|TIMELINE_UCOLOR);
    tmFlags |= TIMELINE_NOCOLOR;
  }
  if( zUses!=0 ){
    int ufid = db_int(0, "SELECT rid FROM blob WHERE uuid GLOB '%q*'", zUses);
    if( ufid ){
      zUses = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", ufid);
      db_multi_exec("CREATE TEMP TABLE usesfile(rid INTEGER PRIMARY KEY)");
      compute_uses_file("usesfile", ufid, 0);
      zType = "ci";
      disableY = 1;
      if( !haveParameterN ) nEntry = 0;
    }else{
      zUses = 0;
    }
  }
  if( renameOnly ){
    db_multi_exec(
      "CREATE TEMP TABLE rnfile(rid INTEGER PRIMARY KEY);"
      "INSERT OR IGNORE INTO rnfile"
      "  SELECT mid FROM mlink WHERE pfnid>0 AND pfnid!=fnid;"
    );
    disableY = 1;
  }
  if( forkOnly ){
    db_multi_exec(
      "CREATE TEMP TABLE rnfork(rid INTEGER PRIMARY KEY);\n"
      "INSERT OR IGNORE INTO rnfork(rid)\n"
      "  SELECT pid FROM plink\n"
      "   WHERE (SELECT value FROM tagxref WHERE tagid=%d AND rid=cid)=="
      "           (SELECT value FROM tagxref WHERE tagid=%d AND rid=pid)\n"
      "   GROUP BY pid"
      "   HAVING count(*)>1;\n"
      "INSERT OR IGNORE INTO rnfork(rid)"
      "  SELECT cid FROM plink\n"
      "   WHERE (SELECT value FROM tagxref WHERE tagid=%d AND rid=cid)=="
      "           (SELECT value FROM tagxref WHERE tagid=%d AND rid=pid)\n"
      "   GROUP BY cid"
      "   HAVING count(*)>1;\n",
      TAG_BRANCH, TAG_BRANCH, TAG_BRANCH, TAG_BRANCH
    );
    db_multi_exec(
      "INSERT OR IGNORE INTO rnfork(rid)\n"
      "  SELECT cid FROM plink\n"
      "   WHERE pid IN rnfork"
      "     AND (SELECT value FROM tagxref WHERE tagid=%d AND rid=cid)=="
      "           (SELECT value FROM tagxref WHERE tagid=%d AND rid=pid)\n"
      " UNION "
      "  SELECT pid FROM plink\n"
      "   WHERE cid IN rnfork"
      "     AND (SELECT value FROM tagxref WHERE tagid=%d AND rid=cid)=="
      "           (SELECT value FROM tagxref WHERE tagid=%d AND rid=pid)\n",
      TAG_BRANCH, TAG_BRANCH, TAG_BRANCH, TAG_BRANCH
    );
    tmFlags |= TIMELINE_UNHIDE;
    zType = "ci";
    disableY = 1;
  }
  if( bisectLocal && cgi_is_loopback(g.zIpAddr) && db_open_local(0) ){
    int iCurrent = db_lget_int("checkout",0);
    char *zPerm = bisect_permalink();
    bisect_create_bilog_table(iCurrent, 0, 1);
    tmFlags |= TIMELINE_UNHIDE | TIMELINE_BISECT | TIMELINE_FILLGAPS;
    zType = "ci";
    disableY = 1;
    style_submenu_element("Permalink", "%R/timeline?bid=%z", zPerm);
  }else{
    bisectLocal = 0;
  }
  if( zBisect!=0 && bisect_create_bilog_table(0, zBisect, 1) ){
    tmFlags |= TIMELINE_UNHIDE | TIMELINE_BISECT | TIMELINE_FILLGAPS;
    zType = "ci";
    disableY = 1;
  }else{
    zBisect = 0;
  }

  style_header("Timeline");
  if( advancedMenu ){
    style_submenu_element("Help", "%R/help?cmd=/timeline");
  }
  login_anonymous_available();
  timeline_temp_table();
  blob_zero(&sql);
  blob_zero(&desc);
  blob_append(&sql, "INSERT OR IGNORE INTO timeline ", -1);
  blob_append(&sql, timeline_query_for_www(), -1);
  if( PB("fc") || PB("v") || PB("detail") ){
    tmFlags |= TIMELINE_FCHANGES;
  }
  if( PB("vfx") ){
    tmFlags |= TIMELINE_FORUMTXT;
  }
  if( (tmFlags & TIMELINE_UNHIDE)==0 ){
    blob_append_sql(&sql,
      " AND NOT EXISTS(SELECT 1 FROM tagxref"
      " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)\n",
      TAG_HIDDEN
    );
  }
  if( from_rid && !to_rid && (P("ft")!=0 || P("bt")!=0) ){
    const char *zTo = P("ft");
    if( zTo ){
      from_to_mode = 1;
      to_rid = timeline_endpoint(from_rid, zTo, 1);
    }else{
      from_to_mode = 2;
      zTo = P("bt");
      to_rid = timeline_endpoint(from_rid, zTo, 0);
    }
    if( to_rid ){
      cgi_replace_parameter("to", zTo);
      if( selectedRid==0 ) selectedRid = from_rid;
      if( secondaryRid==0 ) secondaryRid = to_rid;
    }else{
      to_rid = from_rid;
      blob_appendf(&desc, "There is no path from %h %s to %h.<br>Instead: ",
                   P("from"), from_to_mode==1 ? "forward" : "back", zTo);
     }
  }
  if( ((from_rid && to_rid) || (me_rid && you_rid)) && g.perm.Read ){
    /* If from= and to= are present, display all nodes on a path connecting
    ** the two */
    PathNode *p = 0;
    const char *zFrom = 0;
    const char *zTo = 0;
    Blob ins;
    int nNodeOnPath = 0;

    if( from_rid && to_rid ){
      if( from_to_mode==0 ){
        p = path_shortest(from_rid, to_rid, noMerge, 0, 0);
      }else if( from_to_mode==1 ){
        p = path_shortest(from_rid, to_rid, 0, 1, 0);
      }else{
        p = path_shortest(to_rid, from_rid, 0, 1, 0);
      }
      zFrom = P("from");
      zTo = zTo2 ? zTo2 : P("to");
    }else{
      if( path_common_ancestor(me_rid, you_rid) ){
        p = path_first();
      }
      zFrom = P("me");
      zTo = P("you");
    }
    blob_init(&ins, 0, 0);
    db_multi_exec(
      "CREATE TABLE IF NOT EXISTS temp.pathnode(x INTEGER PRIMARY KEY);"
    );
    if( p ){
      blob_init(&ins, 0, 0);
      blob_append_sql(&ins, "INSERT INTO pathnode(x) VALUES(%d)", p->rid);
      p = p->u.pTo;
      while( p ){
        blob_append_sql(&ins, ",(%d)", p->rid);
        p = p->u.pTo;
      }
    }
    path_reset();
    db_multi_exec("%s", blob_str(&ins)/*safe-for-%s*/);
    blob_reset(&ins);
    if( related || P("mionly") ){
      db_multi_exec(
        "CREATE TABLE IF NOT EXISTS temp.related(x INTEGER PRIMARY KEY);"
        "INSERT OR IGNORE INTO related(x)"
        "  SELECT pid FROM plink WHERE cid IN pathnode AND NOT isprim;"
      );
      if( P("mionly")==0 ){
        db_multi_exec(
          "INSERT OR IGNORE INTO related(x)"
          "  SELECT cid FROM plink WHERE pid IN pathnode;"
        );
      }
      if( showCherrypicks ){
        db_multi_exec(
          "INSERT OR IGNORE INTO related(x)"
          "  SELECT parentid FROM cherrypick WHERE childid IN pathnode;"
        );
        if( P("mionly")==0 ){
          db_multi_exec(
            "INSERT OR IGNORE INTO related(x)"
            "  SELECT childid FROM cherrypick WHERE parentid IN pathnode;"
          );
        }
      }
      db_multi_exec("INSERT OR IGNORE INTO pathnode SELECT x FROM related");
    }
    blob_append_sql(&sql, " AND event.objid IN pathnode");
    if( zChng && zChng[0] ){
      db_multi_exec(
        "DELETE FROM pathnode "
        " WHERE NOT EXISTS(SELECT 1 FROM mlink, filename"
                          " WHERE mlink.mid=x"
                          "   AND mlink.fnid=filename.fnid AND %s)",
        glob_expr("filename.name", zChng)
      );
    }
    tmFlags |= TIMELINE_XMERGE | TIMELINE_FILLGAPS;
    db_multi_exec("%s", blob_sql_text(&sql));
    if( advancedMenu ){
      style_submenu_checkbox("v", "Files", (zType[0]!='a' && zType[0]!='c'),0);
    }
    nNodeOnPath = db_int(0, "SELECT count(*) FROM temp.pathnode");
    if( nNodeOnPath==1 && from_to_mode>0 ){
      blob_appendf(&desc,"Check-in ");
    }else if( from_to_mode>0 ){
      blob_appendf(&desc, "%d check-ins on the shorted path from ",nNodeOnPath);
    }else{
      blob_appendf(&desc, "%d check-ins going from ", nNodeOnPath);
    }
    if( from_rid==selectedRid ){
      blob_appendf(&desc, "<span class='timelineSelected'>");
    }
    blob_appendf(&desc, "%z%h</a>", href("%R/info/%h", zFrom), zFrom);
    if( from_rid==selectedRid ) blob_appendf(&desc, "</span>");
    if( nNodeOnPath==1 && from_to_mode>0 ){
      blob_appendf(&desc, " only");
    }else{
      blob_append(&desc, " to ", -1);
      if( to_rid==secondaryRid ){
        blob_appendf(&desc,"<span class='timelineSelected timelineSecondary'>");
      }
      blob_appendf(&desc, "%z%h</a>", href("%R/info/%h",zTo), zTo);
      if( to_rid==secondaryRid )  blob_appendf(&desc, "</span>");
      if( related ){
        int nRelated = db_int(0, "SELECT count(*) FROM timeline") - nNodeOnPath;
        if( nRelated>0 ){
          blob_appendf(&desc, " and %d related check-in%s", nRelated,
                       nRelated>1 ? "s" : "");
        }
      }
    }
    addFileGlobDescription(zChng, &desc);
  if( (p_rid || d_rid) && g.okRead ){
  }else if( (p_rid || d_rid) && g.perm.Read && zTagSql==0 ){
    /* If p= or d= is present, ignore all other parameters other than n= */
    char *zUuid;
    const char *zCiName;
    int np, nd;
    int np = 0, nd;
    const char *zBackTo = 0;
    const char *zFwdTo = 0;
    int ridBackTo = 0;
    int ridFwdTo = 0;

    tmFlags |= TIMELINE_XMERGE | TIMELINE_FILLGAPS;
    if( p_rid && d_rid ){
      if( p_rid!=d_rid ) p_rid = d_rid;
      if( P("n")==0 ) nEntry = 10;
      if( !haveParameterN ) nEntry = 10;
    }
    db_multi_exec(
       "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY)"
    );
    zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d",
                         p_rid ? p_rid : d_rid);
    zCiName = zDPName;
    if( zCiName==0 ) zCiName = zUuid;
    blob_appendf(&sql, " AND event.objid IN ok");
    blob_append_sql(&sql, " AND event.objid IN ok");
    nd = 0;
    if( d_rid ){
      Stmt s;
      double rStopTime = 9e99;
      zFwdTo = P("ft");
      if( zFwdTo ){
        double rStartDate = db_double(0.0,
           "SELECT mtime FROM event WHERE objid=%d", d_rid);
        ridFwdTo = first_checkin_with_tag_after_date(zFwdTo, rStartDate);
        if( ridFwdTo==0 ){
          ridFwdTo = name_to_typed_rid(zBackTo,"ci");
        }
        if( ridFwdTo ){
          if( !haveParameterN ) nEntry = 0;
          rStopTime = db_double(9e99,
            "SELECT mtime FROM event WHERE objid=%d", ridFwdTo);
        }
      }
      db_prepare(&s,
        "WITH RECURSIVE"
        "  dx(rid,mtime) AS ("
        "     SELECT %d, 0"
        "     UNION"
        "     SELECT plink.cid, plink.mtime FROM dx, plink"
        "      WHERE plink.pid=dx.rid"
        "        AND (:stop>=8e99 OR plink.mtime<=:stop)"
        "      ORDER BY 2"
        "  )"
        "INSERT OR IGNORE INTO ok SELECT rid FROM dx LIMIT %d",
        d_rid, nEntry<=0 ? -1 : nEntry+1
      );
      db_bind_double(&s, ":stop", rStopTime);
      db_step(&s);
      db_finalize(&s);
      compute_descendants(d_rid, nEntry+1);
      /* compute_descendants(d_rid, nEntry==0 ? 0 : nEntry+1); */
      nd = db_int(0, "SELECT count(*)-1 FROM ok");
      if( nd>=0 ){
        db_multi_exec("%s", blob_str(&sql));
      if( nd>=0 ) db_multi_exec("%s", blob_sql_text(&sql));
      if( nd>0 || p_rid==0 ){
        blob_appendf(&desc, "%d descendant%s", nd,(1==nd)?"":"s");
      }
      timeline_add_dividers(
      if( useDividers && !selectedRid ) selectedRid = d_rid;
        db_text("1","SELECT datetime(mtime,'localtime') FROM event"
                    " WHERE objid=%d", d_rid)
      );
      db_multi_exec("DELETE FROM ok");
    }
    if( p_rid ){
      zBackTo = P("bt");
      if( zBackTo ){
        double rDateLimit = db_double(0.0,
           "SELECT mtime FROM event WHERE objid=%d", p_rid);
        ridBackTo = last_checkin_with_tag_before_date(zBackTo, rDateLimit);
        if( ridBackTo==0 ){
          ridBackTo = name_to_typed_rid(zBackTo,"ci");
        }
        if( ridBackTo && !haveParameterN ) nEntry = 0;
      }
      compute_ancestors(p_rid, nEntry+1);
      compute_ancestors(p_rid, nEntry==0 ? 0 : nEntry+1, 0, ridBackTo);
      np = db_int(0, "SELECT count(*)-1 FROM ok");
      if( np>0 ){
      if( np>0 || nd==0 ){
        if( nd>0 ) blob_appendf(&desc, " and ");
        blob_appendf(&desc, "%d ancestors", np);
        db_multi_exec("%s", blob_str(&sql));
        blob_appendf(&desc, "%d ancestor%s", np, (1==np)?"":"s");
        db_multi_exec("%s", blob_sql_text(&sql));
      }
      if( useDividers && !selectedRid ) selectedRid = p_rid;
    }

    blob_appendf(&desc, " of %z%h</a>",
                   href("%R/info?name=%h", zCiName), zCiName);
    if( ridBackTo ){
      if( np==0 ){
        blob_reset(&desc);
        blob_appendf(&desc,
                    "Check-in %z%h</a> only (%z%h</a> is not an ancestor)",
                     href("%R/info?name=%h",zCiName), zCiName,
                     href("%R/info?name=%h",zBackTo), zBackTo);
      }else{
        blob_appendf(&desc, " back to %z%h</a>",
                     href("%R/info?name=%h",zBackTo), zBackTo);
        if( ridFwdTo && zFwdTo ){
          blob_appendf(&desc, " and up to %z%h</a>",
                     href("%R/info?name=%h",zFwdTo), zFwdTo);
        }
      }
    }else if( ridFwdTo ){
      if( nd==0 ){
        blob_reset(&desc);
        blob_appendf(&desc,
                    "Check-in %z%h</a> only (%z%h</a> is not an descendant)",
                     href("%R/info?name=%h",zCiName), zCiName,
                     href("%R/info?name=%h",zFwdTo), zFwdTo);
      }else{
        blob_appendf(&desc, " up to %z%h</a>",
                     href("%R/info?name=%h",zFwdTo), zFwdTo);
      }
    }
      if( d_rid==0 ){
    if( d_rid ){
        timeline_add_dividers(  
          db_text("1","SELECT datetime(mtime,'localtime') FROM event"
                      " WHERE objid=%d", p_rid)
      if( p_rid ){
        );
        /* If both p= and d= are set, we don't have the uuid of d yet. */
        zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", d_rid);
      }
    }
    if( g.okHistory ){
      blob_appendf(&desc, " of <a href='%s/info/%s'>[%.10s]</a>",
                   g.zBaseURL, zUuid, zUuid);
    if( advancedMenu ){
      style_submenu_checkbox("v", "Files", (zType[0]!='a' && zType[0]!='c'),0);
    }
    style_submenu_entry("n","Max:",4,0);
    timeline_y_submenu(1);
  }else if( f_rid && g.perm.Read ){
    /* If f= is present, ignore all other parameters other than n= */
    char *zUuid;
    db_multi_exec(
       "CREATE TEMP TABLE IF NOT EXISTS ok(rid INTEGER PRIMARY KEY);"
       "INSERT INTO ok VALUES(%d);"
       "INSERT OR IGNORE INTO ok SELECT pid FROM plink WHERE cid=%d;"
       "INSERT OR IGNORE INTO ok SELECT cid FROM plink WHERE pid=%d;",
       f_rid, f_rid, f_rid
    );
    if( showCherrypicks ){
      db_multi_exec(
         "INSERT OR IGNORE INTO ok SELECT parentid FROM cherrypick"
         " WHERE childid=%d;"
         "INSERT OR IGNORE INTO ok SELECT childid FROM cherrypick"
         " WHERE parentid=%d;",
         f_rid, f_rid
      );
    }
    blob_append_sql(&sql, " AND event.objid IN ok");
    db_multi_exec("%s", blob_sql_text(&sql));
    if( useDividers && !selectedRid ) selectedRid = f_rid;
    blob_appendf(&desc, "Parents and children of check-in ");
    zUuid = db_text("", "SELECT uuid FROM blob WHERE rid=%d", f_rid);
    }else{
      blob_appendf(&desc, " of check-in [%.10s]", zUuid);
    blob_appendf(&desc, "%z[%S]</a>", href("%R/info/%!S", zUuid), zUuid);
    tmFlags |= TIMELINE_XMERGE;
    if( advancedMenu ){
      style_submenu_checkbox("unhide", "Unhide", 0, 0);
      style_submenu_checkbox("v", "Files", (zType[0]!='a' && zType[0]!='c'),0);
    }
  }else{
    /* Otherwise, a timeline based on a span of time */
    int n;
    const char *zEType = "event";
    char *zDate;
    Blob cond;
    blob_zero(&cond);
    tmFlags |= TIMELINE_FILLGAPS;
    if( zChng && *zChng ){
      addFileGlobExclusion(zChng, &cond);
      tmFlags |= TIMELINE_XMERGE;
    }
    if( zUses ){
      blob_append_sql(&cond, " AND event.objid IN usesfile ");
    }
    if( renameOnly ){
      blob_append_sql(&cond, " AND event.objid IN rnfile ");
    }
    if( forkOnly ){
      blob_append_sql(&cond, " AND event.objid IN rnfork ");
    }
    if( cpOnly && showCherrypicks ){
      db_multi_exec(
        "CREATE TEMP TABLE IF NOT EXISTS cpnodes(rid INTEGER PRIMARY KEY);"
        "INSERT OR IGNORE INTO cpnodes SELECT childid FROM cherrypick;"
        "INSERT OR IGNORE INTO cpnodes SELECT parentid FROM cherrypick;"
      );
      blob_append_sql(&cond, " AND event.objid IN cpnodes ");
    }
    if( bisectLocal || zBisect!=0 ){
      blob_append_sql(&cond, " AND event.objid IN (SELECT rid FROM bilog) ");
    }
    if( zYearMonth ){
    char *zNEntry = mprintf("%d", nEntry);
    url_initialize(&url, "timeline");
    url_add_parameter(&url, "n", zNEntry);
    if( tagid>0 ){
      zType = "ci";
      url_add_parameter(&url, "t", zTagName);
      blob_appendf(&sql, " AND EXISTS (SELECT 1 FROM tagxref WHERE tagid=%d"
                                        " AND tagtype>0 AND rid=blob.rid)",
                   tagid);
    }
    if( (zType[0]=='w' && !g.okRdWiki)
     || (zType[0]=='t' && !g.okRdTkt)
     || (zType[0]=='c' && !g.okRead)
      char *zNext;
      zYearMonth = timeline_expand_datetime(zYearMonth);
      if( strlen(zYearMonth)>7 ){
        zYearMonth = mprintf("%.7s", zYearMonth);
      }
      if( db_int(0,"SELECT julianday('%q-01') IS NULL", zYearMonth) ){
        zYearMonth = db_text(0, "SELECT strftime('%%Y-%%m','now');");
      }
      zNext = db_text(0, "SELECT strftime('%%Y-%%m','%q-01','+1 month');",
                      zYearMonth);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND mtime>=julianday('%q-01')%s)",
          zNext, blob_sql_text(&cond))
      ){
        zNewerButton = fossil_strdup(url_render(&url, "ym", zNext, 0, 0));
        zNewerButtonLabel = "Following month";
      }
      fossil_free(zNext);
      zNext = db_text(0, "SELECT strftime('%%Y-%%m','%q-01','-1 month');",
                      zYearMonth);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND mtime<julianday('%q-01')%s)",
          zYearMonth, blob_sql_text(&cond))
      ){
        zOlderButton = fossil_strdup(url_render(&url, "ym", zNext, 0, 0));
        zOlderButtonLabel = "Previous month";
      }
      fossil_free(zNext);
      blob_append_sql(&cond, " AND %Q=strftime('%%Y-%%m',event.mtime) ",
                      zYearMonth);
      nEntry = -1;
    }
    else if( zYearWeek ){
      char *z, *zNext;
      zYearWeek = timeline_expand_datetime(zYearWeek);
      z = db_text(0, "SELECT strftime('%%Y-%%W',%Q)", zYearWeek);
      if( z && z[0] ){
        zYearWeekStart = db_text(0, "SELECT date(%Q,'-6 days','weekday 1')",
                                 zYearWeek);
        zYearWeek = z;
      }else{
        if( strlen(zYearWeek)==7 ){
          zYearWeekStart = db_text(0,
             "SELECT date('%.4q-01-01','%+d days','weekday 1')",
             zYearWeek, atoi(zYearWeek+5)*7-6);
        }else{
          zYearWeekStart = 0;
        }
        if( zYearWeekStart==0 || zYearWeekStart[0]==0 ){
          zYearWeekStart = db_text(0,
             "SELECT date('now','-6 days','weekday 1');");
          zYearWeek = db_text(0,
             "SELECT strftime('%%Y-%%W','now','-6 days','weekday 1')");
        }
      }
      zNext = db_text(0, "SELECT date(%Q,'+7 day');", zYearWeekStart);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND mtime>=julianday(%Q)%s)",
          zNext, blob_sql_text(&cond))
      ){
        zNewerButton = fossil_strdup(url_render(&url, "yw", zNext, 0, 0));
        zNewerButtonLabel = "Following week";
      }
      fossil_free(zNext);
      zNext = db_text(0, "SELECT date(%Q,'-7 days');", zYearWeekStart);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND mtime<julianday(%Q)%s)",
          zYearWeekStart, blob_sql_text(&cond))
      ){
        zOlderButton = fossil_strdup(url_render(&url, "yw", zNext, 0, 0));
        zOlderButtonLabel = "Previous week";
      }
      fossil_free(zNext);
      blob_append_sql(&cond, " AND %Q=strftime('%%Y-%%W',event.mtime) ",
                   zYearWeek);
      nEntry = -1;
    }
    else if( zDay ){
      char *zNext;
      zDay = timeline_expand_datetime(zDay);
      zDay = db_text(0, "SELECT date(%Q)", zDay);
      if( zDay==0 || zDay[0]==0 ){
        zDay = db_text(0, "SELECT date('now')");
      }
      zNext = db_text(0, "SELECT date(%Q,'+1 day');", zDay);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND mtime>=julianday(%Q)%s)",
          zNext, blob_sql_text(&cond))
      ){
        zNewerButton = fossil_strdup(url_render(&url, "ymd", zNext, 0, 0));
        zNewerButtonLabel = "Following day";
      }
      fossil_free(zNext);
      zNext = db_text(0, "SELECT date(%Q,'-1 day');", zDay);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND mtime<julianday(%Q)%s)",
          zDay, blob_sql_text(&cond))
      ){
        zOlderButton = fossil_strdup(url_render(&url, "ymd", zNext, 0, 0));
        zOlderButtonLabel = "Previous day";
      }
      fossil_free(zNext);
      blob_append_sql(&cond, " AND %Q=date(event.mtime) ",
                   zDay);
      nEntry = -1;
    }
    else if( zNDays ){
      nDays = atoi(zNDays);
      if( nDays<1 ) nDays = 1;
      blob_append_sql(&cond, " AND event.mtime>=julianday('now','-%d days') ",
                      nDays);
      nEntry = -1;
    }
    else if( zYear &&
             ((4==strlen(zYear) && atoi(zYear)>1900)
              || (1==strlen(zYear) && 0==atoi(zYear)))){
      int year = atoi(zYear);
      char *zNext = 0;
      if(0==year){/*use current year*/
        Stmt qy;
        db_prepare(&qy, "SELECT strftime('%%Y','now')");
        db_step(&qy);
        year = db_column_int(&qy, 0);
        zYear = fossil_strdup(db_column_text(&qy, 0));
        db_finalize(&qy);
      }else{
        zNext = mprintf("%d", year+1);
        if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND strftime('%%Y',mtime)=%Q %s)",
          zNext, blob_sql_text(&cond))
        ){
          zNewerButton = fossil_strdup(url_render(&url, "year", zNext, 0, 0));
          zNewerButtonLabel = "Following year";
        }
        fossil_free(zNext);
      }
      zNext = mprintf("%d", year-1);
      if( db_int(0,
          "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
          " WHERE blob.rid=event.objid AND strftime('%%Y',mtime)=%Q %s)",
          zNext, blob_sql_text(&cond))
      ){
        zOlderButton = fossil_strdup(url_render(&url, "year", zNext, 0, 0));
        zOlderButtonLabel = "Previous year";
      }
      fossil_free(zNext);
      blob_append_sql(&cond, " AND %Q=strftime('%%Y',event.mtime) ",
                      zYear);
      nEntry = -1;
    }
    if( zTagSql ){
      db_multi_exec(
        "CREATE TEMP TABLE selected_nodes(rid INTEGER PRIMARY KEY);"
        "INSERT OR IGNORE INTO selected_nodes"
        " SELECT tagxref.rid FROM tagxref NATURAL JOIN tag"
        " WHERE %s AND tagtype>0", zTagSql/*safe-for-%s*/
      );
      if( zMark ){
        /* If the t=release option is used with m=UUID, then also
        ** include the UUID check-in in the display list */
        int ridMark = name_to_rid(zMark);
        db_multi_exec(
          "INSERT OR IGNORE INTO selected_nodes(rid) VALUES(%d)", ridMark);
      }
      if( P("x")!=0 ){
        char *zX = fossil_strdup(P("x"));
        int ii;
        int ridX;
        while( zX[0] ){
          char c;
          if( zX[0]==',' || zX[0]==' ' ){ zX++; continue; }
          for(ii=1; zX[ii] && zX[ii]!=',' && zX[ii]!=' '; ii++){}
          c = zX[ii];
          zX[ii] = 0;
          ridX = name_to_rid(zX);
          db_multi_exec(
            "INSERT OR IGNORE INTO selected_nodes(rid) VALUES(%d)", ridX);
          zX[ii] = c;
          zX += ii;
        }
      }
      if( !related ){
        blob_append_sql(&cond, " AND blob.rid IN selected_nodes");
      }else{
        db_multi_exec(
          "CREATE TEMP TABLE related_nodes(rid INTEGER PRIMARY KEY);"
          "INSERT INTO related_nodes SELECT rid FROM selected_nodes;"
        );
        blob_append_sql(&cond, " AND blob.rid IN related_nodes");
        /* The next two blob_appendf() calls add SQL that causes check-ins that
        ** are not part of the branch which are parents or children of the
        ** branch to be included in the report.  These related check-ins are
        ** useful in helping to visualize what has happened on a quiescent
        ** branch that is infrequently merged with a much more activate branch.
        */
        db_multi_exec(
          "INSERT OR IGNORE INTO related_nodes"
          " SELECT pid FROM selected_nodes CROSS JOIN plink"
          " WHERE selected_nodes.rid=plink.cid;"
        );
        if( P("mionly")==0 ){
          db_multi_exec(
            "INSERT OR IGNORE INTO related_nodes"
            " SELECT cid FROM selected_nodes CROSS JOIN plink"
            " WHERE selected_nodes.rid=plink.pid;"
          );
          if( showCherrypicks ){
            db_multi_exec(
              "INSERT OR IGNORE INTO related_nodes"
              " SELECT childid FROM selected_nodes CROSS JOIN cherrypick"
              " WHERE selected_nodes.rid=cherrypick.parentid;"
            );
          }
        }
        if( showCherrypicks ){
          db_multi_exec(
            "INSERT OR IGNORE INTO related_nodes"
            " SELECT parentid FROM selected_nodes CROSS JOIN cherrypick"
            " WHERE selected_nodes.rid=cherrypick.childid;"
          );
        }
        if( (tmFlags & TIMELINE_UNHIDE)==0 ){
          db_multi_exec(
            "DELETE FROM related_nodes WHERE rid IN "
            " (SELECT related_nodes.rid FROM related_nodes, tagxref"
            " WHERE tagid=%d AND tagtype>0 AND tagxref.rid=related_nodes.rid)",
            TAG_HIDDEN
          );
        }
      }
    }
    if( (zType[0]=='w' && !g.perm.RdWiki)
     || (zType[0]=='t' && !g.perm.RdTkt)
     || (zType[0]=='n' && !g.perm.RdTkt)
     || (zType[0]=='e' && !g.perm.RdWiki)
     || (zType[0]=='c' && !g.perm.Read)
     || (zType[0]=='g' && !g.perm.Read)
     || (zType[0]=='f' && !g.perm.RdForum)
    ){
      zType = "all";
    }
    if( zType[0]=='a' ){
      if( !g.okRead || !g.okRdWiki || !g.okRdTkt ){
      if( !g.perm.Read || !g.perm.RdWiki || !g.perm.RdTkt ){
        char cSep = '(';
        blob_appendf(&sql, " AND event.type IN ");
        if( g.okRead ){
          blob_appendf(&sql, "%c'ci'", cSep);
        blob_append_sql(&cond, " AND event.type IN ");
        if( g.perm.Read ){
          blob_append_sql(&cond, "%c'ci','g'", cSep);
          cSep = ',';
        }
        if( g.okRdWiki ){
          blob_appendf(&sql, "%c'w'", cSep);
        if( g.perm.RdWiki ){
          blob_append_sql(&cond, "%c'w','e'", cSep);
          cSep = ',';
        }
        if( g.okRdTkt ){
          blob_appendf(&sql, "%c't'", cSep);
        if( g.perm.RdTkt ){
          blob_append_sql(&cond, "%c't'", cSep);
          cSep = ',';
        }
        if( g.perm.RdForum ){
          blob_append_sql(&cond, "%c'f'", cSep);
          cSep = ',';
        }
        blob_appendf(&sql, ")");
        blob_append_sql(&cond, ")");
      }
    }else{ /* zType!="all" */
      if( zType[0]=='n' ){
        blob_append_sql(&cond,
            " AND event.type='t' AND event.comment GLOB 'New ticket*'");
      }else{
      blob_appendf(&sql, " AND event.type=%Q", zType);
        blob_append_sql(&cond, " AND event.type=%Q", zType);
      url_add_parameter(&url, "y", zType);
      }
      if( zType[0]=='c' ){
        zEType = "checkin";
        zEType = "check-in";
      }else if( zType[0]=='w' ){
        zEType = "wiki edit";
        zEType = "wiki";
      }else if( zType[0]=='t' ){
        zEType = "ticket change";
      }else if( zType[0]=='n' ){
        zEType = "new ticket";
      }else if( zType[0]=='e' ){
        zEType = "technical note";
      }else if( zType[0]=='g' ){
        zEType = "tag";
      }else if( zType[0]=='f' ){
        zEType = "forum post";
      }
    }
    if( zUser ){
      int n = db_int(0,"SELECT count(*) FROM event"
      blob_appendf(&sql, " AND event.user=%Q", zUser);
      url_add_parameter(&url, "u", zUser);
                       " WHERE user=%Q OR euser=%Q", zUser, zUser);
      if( n<=nEntry ){
        nEntry = -1;
      }
      blob_append_sql(&cond, " AND (event.user=%Q OR event.euser=%Q)",
                   zUser, zUser);
      zThisUser = zUser;
    }
    if ( zSearch ){
      blob_appendf(&sql,
        " AND (event.comment LIKE '%%%q%%' OR event.brief LIKE '%%%q%%')",
        zSearch, zSearch);
      url_add_parameter(&url, "s", zSearch);
    }
    if( zAfter ){
    if( zSearch ){
      if( tmFlags & TIMELINE_FORUMTXT ){
        sqlite3_create_function(g.db, "forum_post_content", 1, SQLITE_UTF8,
                 0, forum_post_content_function, 0, 0);
        blob_append_sql(&cond,
          " AND (event.comment LIKE '%%%q%%'"
               " OR event.brief LIKE '%%%q%%'"
               " OR (event.type=='f' AND"
                     " forum_post_content(event.objid) LIKE '%%%q%%'))",
          zSearch, zSearch, zSearch);
      }else{
        blob_append_sql(&cond,
          " AND (event.comment LIKE '%%%q%%' OR event.brief LIKE '%%%q%%')",
          zSearch, zSearch);
      }
    }
    rBefore = symbolic_name_to_mtime(zBefore, &zBefore);
    rAfter = symbolic_name_to_mtime(zAfter, &zAfter);
      while( isspace(zAfter[0]) ){ zAfter++; }
      if( zAfter[0] ){
        blob_appendf(&sql, 
    rCirca = symbolic_name_to_mtime(zCirca, &zCirca);
    blob_append_sql(&sql, "%s", blob_sql_text(&cond));
           " AND event.mtime>=(SELECT julianday(%Q, 'utc'))"
           " ORDER BY event.mtime ASC", zAfter);
    if( rAfter>0.0 ){
        url_add_parameter(&url, "a", zAfter);
        zBefore = 0;
      if( rBefore>0.0 ){
        blob_append_sql(&sql,
           " AND event.mtime>=%.17g AND event.mtime<=%.17g"
           " ORDER BY event.mtime ASC", rAfter-ONE_SECOND, rBefore+ONE_SECOND);
        nEntry = -1;
      }else{
        blob_append_sql(&sql,
           " AND event.mtime>=%.17g  ORDER BY event.mtime ASC",
        zAfter = 0;
           rAfter-ONE_SECOND);
      }
      zCirca = 0;
      url_add_parameter(&url, "c", 0);
    }else if( zBefore ){
    }else if( rBefore>0.0 ){
      while( isspace(zBefore[0]) ){ zBefore++; }
      if( zBefore[0] ){
        blob_appendf(&sql, 
      blob_append_sql(&sql,
           " AND event.mtime<=(SELECT julianday(%Q, 'utc'))"
           " ORDER BY event.mtime DESC", zBefore);
        url_add_parameter(&url, "b", zBefore);
       }else{
         " AND event.mtime<=%.17g ORDER BY event.mtime DESC",
         rBefore+ONE_SECOND);
      zCirca = 0;
      url_add_parameter(&url, "c", 0);
    }else if( rCirca>0.0 ){
      Blob sql2;
      blob_init(&sql2, blob_sql_text(&sql), -1);
      blob_append_sql(&sql2,
          " AND event.mtime>=%f ORDER BY event.mtime ASC", rCirca);
      if( nEntry>0 ){
        blob_append_sql(&sql2," LIMIT %d", (nEntry+1)/2);
      }
      if( PB("showsql") ){
         @ <pre>%h(blob_sql_text(&sql2))</pre>
      }
      db_multi_exec("%s", blob_sql_text(&sql2));
      if( nEntry>0 ){
        nEntry -= db_int(0,"select count(*) from timeline");
        if( nEntry<=0 ) nEntry = 1;
      }
      blob_reset(&sql2);
      blob_append_sql(&sql,
          " AND event.mtime<=%f ORDER BY event.mtime DESC",
          rCirca
      );
      if( zMark==0 ) zMark = zCirca;
    }else{
        zBefore = 0;
      }
    }else if( zCirca ){
      blob_append_sql(&sql, " ORDER BY event.mtime DESC");
    }
    if( nEntry>0 ) blob_append_sql(&sql, " LIMIT %d", nEntry);
    db_multi_exec("%s", blob_sql_text(&sql));

    n = db_int(0, "SELECT count(*) FROM timeline WHERE etype!='div' /*scan*/");
    zPlural = n==1 ? "" : "s";
    if( zYearMonth ){
      blob_appendf(&desc, "%d %s%s for the month beginning %h-01",
                   n, zEType, zPlural, zYearMonth);
    }else if( zYearWeek ){
      blob_appendf(&desc, "%d %s%s for week %h beginning on %h",
                   n, zEType, zPlural, zYearWeek, zYearWeekStart);
    }else if( zDay ){
      while( isspace(zCirca[0]) ){ zCirca++; }
      if( zCirca[0] ){
      blob_appendf(&desc, "%d %s%s occurring on %h", n, zEType, zPlural, zDay);
    }else if( zNDays ){
        double rCirca = db_double(0.0, "SELECT julianday(%Q, 'utc')", zCirca);
        Blob sql2;
        blob_init(&sql2, blob_str(&sql), -1);
        blob_appendf(&sql2,
      blob_appendf(&desc, "%d %s%s within the past %d day%s",
            " AND event.mtime<=%f ORDER BY event.mtime DESC LIMIT %d",
            rCirca, (nEntry+1)/2
                          n, zEType, zPlural, nDays, nDays>1 ? "s" : "");
    }else if( zBefore==0 && zCirca==0 && n>=nEntry && nEntry>0 ){
        );
        db_multi_exec("%s", blob_str(&sql2));
        blob_reset(&sql2);
        blob_appendf(&sql,
      blob_appendf(&desc, "%d most recent %s%s", n, zEType, zPlural);
    }else{
      blob_appendf(&desc, "%d %s%s", n, zEType, zPlural);
            " AND event.mtime>=%f ORDER BY event.mtime ASC",
            rCirca
        );
        nEntry -= (nEntry+1)/2;
        timeline_add_dividers(zCirca);
        url_add_parameter(&url, "c", zCirca);
      }else{
        zCirca = 0;
      }
    }else{
      blob_appendf(&sql, " ORDER BY event.mtime DESC");
    }
    if( zUses ){
      char *zFilenames = names_of_file(zUses);
      blob_appendf(&desc, " using file %s version %z%S</a>", zFilenames,
                   href("%R/artifact/%!S",zUses), zUses);
      tmFlags |= TIMELINE_XMERGE | TIMELINE_FILLGAPS;
    }
    if( renameOnly ){
    blob_appendf(&sql, " LIMIT %d", nEntry);
      blob_appendf(&desc, " that contain filename changes");
    db_multi_exec("%s", blob_str(&sql));

      tmFlags |= TIMELINE_XMERGE | TIMELINE_FILLGAPS;
    }
    n = db_int(0, "SELECT count(*) FROM timeline /*scan*/");
    if( n<nEntry && zAfter ){
    if( forkOnly ){
      cgi_redirect(url_render(&url, "a", 0, "b", 0));
      blob_appendf(&desc, " associated with forks");
      tmFlags |= TIMELINE_DISJOINT;
    }
    if( zAfter==0 && zBefore==0 && zCirca==0 ){
      blob_appendf(&desc, "%d most recent %ss", n, zEType);
    if( bisectLocal || zBisect!=0 ){
      blob_appendf(&desc, " in a bisect");
    }else{
      blob_appendf(&desc, "%d %ss", n, zEType);
      tmFlags |= TIMELINE_DISJOINT;
    }
    if( cpOnly && showCherrypicks ){
      blob_appendf(&desc, " that participate in a cherrypick merge");
      tmFlags |= TIMELINE_CHPICK|TIMELINE_DISJOINT;
    }
    if( zUser ){
      if( g.perm.Admin ){
        blob_appendf(&desc, " by user <a href='%R/setup_uinfo?l=%h'>%h</a>",
                     zUser, zUser);
      }else{
      blob_appendf(&desc, " by user %h", zUser);
      tmFlags |= TIMELINE_DISJOINT;
        blob_appendf(&desc, " by user %h", zUser);
      }
      tmFlags |= TIMELINE_XMERGE | TIMELINE_FILLGAPS;
    }
    if( tagid>0 ){
      blob_appendf(&desc, " tagged with \"%h\"", zTagName);
      tmFlags |= TIMELINE_DISJOINT;
    if( zTagSql ){
      if( matchStyle==MS_EXACT || matchStyle==MS_BRLIST ){
        if( related ){
          blob_appendf(&desc, " related to %h", zMatchDesc);
        }else{
          blob_appendf(&desc, " tagged with %h", zMatchDesc);
        }
      }else{
        if( related ){
          blob_appendf(&desc, " related to tags matching %h", zMatchDesc);
        }else{
          blob_appendf(&desc, " with tags matching %h", zMatchDesc);
        }
      }
      if( zMark ){
        blob_appendf(&desc," plus check-in \"%h\"", zMark);
      }
      tmFlags |= TIMELINE_XMERGE | TIMELINE_FILLGAPS;
    }
    addFileGlobDescription(zChng, &desc);
    if( rAfter>0.0 ){
      if( rBefore>0.0 ){
        blob_appendf(&desc, " occurring between %h and %h.<br>",
    if( zAfter ){
      blob_appendf(&desc, " occurring on or after %h.<br>", zAfter);
    }else if( zBefore ){
                     zAfter, zBefore);
      }else{
        blob_appendf(&desc, " occurring on or after %h.<br>", zAfter);
      }
    }else if( rBefore>0.0 ){
      blob_appendf(&desc, " occurring on or before %h.<br>", zBefore);
    }else if( zCirca ){
    }else if( rCirca>0.0 ){
      blob_appendf(&desc, " occurring around %h.<br>", zCirca);
    }
    if( zSearch ){
      blob_appendf(&desc, " matching \"%h\"", zSearch);
    }
    if( g.okHistory ){
      if( zAfter || n==nEntry ){
        zDate = db_text(0, "SELECT min(timestamp) FROM timeline /*scan*/");
        timeline_submenu(&url, "Older", "b", zDate, "a");
    if( g.perm.Hyperlink ){
      static const char *const azMatchStyles[] = {
        "exact", "Exact", "glob", "Glob", "like", "Like", "regexp", "Regexp",
        "brlist", "List"
      };
      double rDate;
      zDate = db_text(0, "SELECT min(timestamp) FROM timeline /*scan*/");
      if( (!zDate || !zDate[0]) && ( zAfter || zBefore ) ){
        zDate = mprintf("%s", (zAfter ? zAfter : zBefore));
      }
      if( zDate ){
        rDate = symbolic_name_to_mtime(zDate, 0);
        if( db_int(0,
            "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
            " WHERE blob.rid=event.objid AND mtime<=%.17g%s)",
            rDate-ONE_SECOND, blob_sql_text(&cond))
        ){
          zOlderButton = fossil_strdup(url_render(&url, "b", zDate, "a", 0));
          zOlderButtonLabel = "More";
        }
        free(zDate);
      }
      zDate = db_text(0, "SELECT max(timestamp) FROM timeline /*scan*/");
      if( (!zDate || !zDate[0]) && ( zAfter || zBefore ) ){
        zDate = mprintf("%s", (zBefore ? zBefore : zAfter));
      }
      if( zDate ){
        rDate = symbolic_name_to_mtime(zDate, 0);
        if( db_int(0,
            "SELECT EXISTS (SELECT 1 FROM event CROSS JOIN blob"
            " WHERE blob.rid=event.objid AND mtime>=%.17g%s)",
            rDate+ONE_SECOND, blob_sql_text(&cond))
        ){
          zNewerButton = fossil_strdup(url_render(&url, "a", zDate, "b", 0));
          zNewerButtonLabel = "More";
        }
        free(zDate);
      }
      if( advancedMenu ){
        if( zType[0]=='a' || zType[0]=='c' ){
          style_submenu_checkbox("unhide", "Unhide", 0, 0);
        }
        style_submenu_checkbox("v", "Files",(zType[0]!='a' && zType[0]!='c'),0);
      }
      style_submenu_entry("n","Max:",4,0);
      timeline_y_submenu(disableY);
      if( advancedMenu ){
        style_submenu_entry("t", "Tag Filter:", -8, 0);
        style_submenu_multichoice("ms", count(azMatchStyles)/2,azMatchStyles,0);
      }
    }
    blob_zero(&cond);
  }
  if( PB("showsql") ){
    @ <pre>%h(blob_sql_text(&sql))</pre>
      }
      if( zBefore || (zAfter && n==nEntry) ){
        zDate = db_text(0, "SELECT max(timestamp) FROM timeline /*scan*/");
        timeline_submenu(&url, "Newer", "a", zDate, "b");
  }
  if( search_restrict(SRCH_CKIN)!=0 ){
    style_submenu_element("Search", "%R/search?y=c");
  }
  if( advancedMenu ){
    style_submenu_element("Basic", "%s",
        free(zDate);
      }else if( tagid==0 ){
        if( zType[0]!='a' ){
          timeline_submenu(&url, "All Types", "y", "all", 0);
        }
        if( zType[0]!='w' && g.okRdWiki ){
          timeline_submenu(&url, "Wiki Only", "y", "w", 0);
        }
        if( zType[0]!='c' && g.okRead ){
          timeline_submenu(&url, "Checkins Only", "y", "ci", 0);
        }
        if( zType[0]!='t' && g.okRdTkt ){
        url_render(&url, "advm", "0", "udc", "1"));
  }else{
    style_submenu_element("Advanced", "%s",
        url_render(&url, "advm", "1", "udc", "1"));
  }
  if( PB("showid") ) tmFlags |= TIMELINE_SHOWRID;
  if( useDividers && zMark && zMark[0] ){
    double r = symbolic_name_to_mtime(zMark, 0);
    if( r>0.0 && !selectedRid ) selectedRid = timeline_add_divider(r);
  }
  blob_zero(&sql);
  if( PB("oldestfirst") ){
    db_prepare(&q, "SELECT * FROM timeline ORDER BY sortby ASC /*scan*/");
  }else{
    db_prepare(&q, "SELECT * FROM timeline ORDER BY sortby DESC /*scan*/");
  }
  if( fossil_islower(desc.aData[0]) ){
    desc.aData[0] = fossil_toupper(desc.aData[0]);
  }
  if( zBrName ){
    if( !PB("nowiki")
     && wiki_render_associated("branch", zBrName, WIKIASSOC_ALL)
    ){
      @ <div class="section">%b(&desc)</div>
    } else{
      @ <h2>%b(&desc)</h2>
    }
    style_submenu_element("Diff", "%R/vdiff?branch=%T", zBrName);
  }else
  if( zTagName
   && matchStyle==MS_EXACT
   && zBrName==0
   && !PB("nowiki")
   && wiki_render_associated("tag", zTagName, WIKIASSOC_ALL)
  ){
    @ <div class="section">%b(&desc)</div>
  } else{
    @ <h2>%b(&desc)</h2>
  }
  blob_reset(&desc);

  /* Report any errors. */
  if( zError ){
    @ <p class="generalError">%h(zError)</p>
  }

  if( zNewerButton ){
    @ %z(chref("button","%s",zNewerButton))%h(zNewerButtonLabel)\
    @ &nbsp;&uarr;</a>
  }
  cgi_check_for_malice();
  www_print_timeline(&q, tmFlags, zThisUser, zThisTag, zBrName,
                     selectedRid, secondaryRid, 0);
  db_finalize(&q);
  if( zOlderButton ){
          timeline_submenu(&url, "Tickets Only", "y", "t", 0);
        }
      }
    @ %z(chref("button","%s",zOlderButton))%h(zOlderButtonLabel)\
    @ &nbsp;&darr;</a>
  }
  document_emit_js(/*handles pikchrs rendered above*/);
  style_finish_page();
}
      if( nEntry>20 ){
        timeline_submenu(&url, "20 Events", "n", "20", 0);
      }
      if( nEntry<200 ){
        timeline_submenu(&url, "200 Events", "n", "200", 0);
      }
    }
  }
  blob_zero(&sql);
  db_prepare(&q, "SELECT * FROM timeline ORDER BY timestamp DESC /*scan*/");

/*
** Translate a timeline entry into the printable format by
** converting every %-substitutions as follows:
**
**     %n  newline
**     %%  a raw %
**     %H  commit hash
**     %h  abbreviated commit hash
**     %a  author name
**     %d  date
**     %c  comment (\n, \t replaced by space, \r deleted)
**     %b  branch
**     %t  tags
**     %p  phase (zero or more of: *CURRENT*, *MERGE*, *FORK*,
**                                 *UNPUBLISHED*, *LEAF*, *BRANCH*)
**
** The returned string is obtained from fossil_malloc() and should
** be freed by the caller.
*/
static char *timeline_entry_subst(
  const char *zFormat,
  int *nLine,
  const char *zId,
  const char *zDate,
  const char *zUser,
  const char *zCom,
  const char *zBranch,
  const char *zTags,
  const char *zPhase
){
  Blob r, co;
  int i, j;
  blob_init(&r, 0, 0);
  blob_init(&co, 0, 0);

  if( 0==zCom ){
    zCom = "(NULL)";
  }

  /* Replace LF and tab with space, delete CR */
  while( zCom[0] ){
    for(j=0; zCom[j] && zCom[j]!='\r' && zCom[j]!='\n' && zCom[j]!='\t'; j++){}
    blob_append(&co, zCom, j);
    if( zCom[j]==0 ) break;
    if( zCom[j]!='\r')
      blob_append(&co, " ", 1);
    zCom += j+1;
  }
  blob_str(&co);

  @ <h2>%b(&desc)</h2>
  blob_reset(&desc);
  www_print_timeline(&q, tmFlags, 0);
  db_finalize(&q);
  style_footer();
  *nLine = 1;
  while( zFormat[0] ){
    for(i=0; zFormat[i] && zFormat[i]!='%'; i++){}
    blob_append(&r, zFormat, i);
    if( zFormat[i]==0 ) break;
    if( zFormat[i+1]=='%' ){
      blob_append(&r, "%", 1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='n' ){
      blob_append(&r, "\n", 1);
      *nLine += 1;
      zFormat += i+2;
    }else if( zFormat[i+1]=='H' ){
      blob_append(&r, zId, -1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='h' ){
      char *zFree = 0;
      zFree = mprintf("%S", zId);
      blob_append(&r, zFree, -1);
      fossil_free(zFree);
      zFormat += i+2;
    }else if( zFormat[i+1]=='d' ){
      blob_append(&r, zDate, -1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='a' ){
      blob_append(&r, zUser, -1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='c' ){
      blob_append(&r, co.aData, -1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='b' ){
      if( zBranch ) blob_append(&r, zBranch, -1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='t' ){
      blob_append(&r, zTags, -1);
      zFormat += i+2;
    }else if( zFormat[i+1]=='p' ){
      blob_append(&r, zPhase, -1);
      zFormat += i+2;
    }else{
      blob_append(&r, zFormat+i, 1);
      zFormat += i+1;
    }
  }
  fossil_free(co.aData);
  blob_str(&r);
  return r.aData;
}

/*
** The input query q selects various records.  Print a human-readable
** summary of those records.
**
** Limit number of lines or entries printed to nLimit.  If nLimit is zero
** there is no limit.  If nLimit is greater than zero, limit the number of
** complete entries printed.  If nLimit is less than zero, attempt to limit
** Limit the number of entries printed to nLine.
** 
** the number of lines printed (this is basically the legacy behavior).
** The line limit, if used, is approximate because it is only checked on a
** per-entry basis.  If verbose mode, the file name details are considered
** to be part of the entry.
**
** The query should return these columns:
**
**    0.  rid
**    1.  uuid
**    2.  Date/Time
**    3.  Comment string and user
**    3.  Comment string, user, and tags
**    4.  Number of non-merge children
**    5.  Number of parents
**    6.  mtime
**    7.  branch
**    8.  event-type: 'ci', 'w', 't', 'f', and so forth.
**    9.  comment
**   10.  user
**   11.  tags
*/
void print_timeline(Stmt *q, int mxLine){
void print_timeline(Stmt *q, int nLimit, int width, const char *zFormat,
                    int verboseFlag){
  int nAbsLimit = (nLimit >= 0) ? nLimit : -nLimit;
  int nLine = 0;
  int nEntry = 0;
  char zPrevDate[20];
  const char *zCurrentUuid=0;
  zPrevDate[0] = 0;
  const char *zCurrentUuid = 0;
  int fchngQueryInit = 0;     /* True if fchngQuery is initialized */
  Stmt fchngQuery;            /* Query for file changes on check-ins */
  int rc;
  /* True: separate entries with a newline after file listing */
  int bVerboseNL = (zFormat &&
                    (fossil_strcmp(zFormat, TIMELINE_FMT_ONELINE)!=0));
  /* True: separate entries with a newline even with no file listing */
  int bNoVerboseNL = (zFormat &&
                      (fossil_strcmp(zFormat, TIMELINE_FMT_MEDIUM)==0 ||
                       fossil_strcmp(zFormat, TIMELINE_FMT_FULL)==0));

  zPrevDate[0] = 0;
  if( g.localOpen ){
    int rid = db_lget_int("checkout", 0);
    zCurrentUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
  }

  while( db_step(q)==SQLITE_ROW && nLine<=mxLine ){
  while( (rc=db_step(q))==SQLITE_ROW ){
    int rid = db_column_int(q, 0);
    const char *zId = db_column_text(q, 1);
    const char *zDate = db_column_text(q, 2);
    const char *zCom = db_column_text(q, 3);
    int nChild = db_column_int(q, 4);
    int nParent = db_column_int(q, 5);
    const char *zBranch = db_column_text(q, 7);
    const char *zType = db_column_text(q, 8);
    const char *zComShort = db_column_text(q, 9);
    const char *zUserShort = db_column_text(q, 10);
    const char *zTags = db_column_text(q, 11);
    char *zFree = 0;
    int n = 0;
    char zPrefix[80];
    char zUuid[UUID_SIZE+1];
    

    if( nAbsLimit!=0 ){
      if( nLimit<0 && nLine>=nAbsLimit ){
        fossil_print("--- line limit (%d) reached ---\n", nAbsLimit);
        break; /* line count limit hit, stop. */
      }else if( nEntry>=nAbsLimit ){
        fossil_print("--- entry limit (%d) reached ---\n", nAbsLimit);
        break; /* entry count limit hit, stop. */
      }
    sprintf(zUuid, "%.10s", zId);
    if( memcmp(zDate, zPrevDate, 10) ){
      printf("=== %.10s ===\n", zDate);
    }
    if( zFormat == 0 && fossil_strnicmp(zDate, zPrevDate, 10) ){
      fossil_print("=== %.10s ===\n", zDate);
      memcpy(zPrevDate, zDate, 10);
      nLine++;
      nLine++; /* record another line */
    }
    if( zCom==0 ) zCom = "";
    if( zFormat == 0 )
    printf("%.8s ", &zDate[11]);
      fossil_print("%.8s ", &zDate[11]);
    zPrefix[0] = 0;
    if( nParent>1 ){
      sqlite3_snprintf(sizeof(zPrefix), zPrefix, "*MERGE* ");
      n = strlen(zPrefix);
    }
    if( nChild>1 ){
      const char *zBrType;
      if( count_nonbranch_children(rid)>1 ){
        zBrType = "*FORK* ";
      }else{
        zBrType = "*BRANCH* ";
      }
      sqlite3_snprintf(sizeof(zPrefix)-n, &zPrefix[n], zBrType);
      n = strlen(zPrefix);
    }
    if( zCurrentUuid && strcmp(zCurrentUuid,zId)==0 ){
    if( fossil_strcmp(zCurrentUuid,zId)==0 ){
      sqlite3_snprintf(sizeof(zPrefix)-n, &zPrefix[n], "*CURRENT* ");
      n += strlen(zPrefix);
      n += strlen(zPrefix+n);
    }
    if( content_is_private(rid) ){
      sqlite3_snprintf(sizeof(zPrefix)-n, &zPrefix[n], "*UNPUBLISHED* ");
      n += strlen(zPrefix+n);
    }
    if( zType && zType[0]=='w'
     && (zCom[0]=='+' || zCom[0]=='-' || zCom[0]==':')
    ){
      /* Special processing for Wiki comments */
      if(!zComShort || !*zComShort){
        /* Shouldn't be possible, but just in case... */
        zComShort = " ";
      }
      if( zCom[0]=='+' ){
        zFree = mprintf("[%S] Add wiki page \"%s\" (user: %s)",
                        zId, zComShort+1, zUserShort);
      }else if( zCom[0]=='-' ){
        zFree = mprintf("[%S] Delete wiki page \"%s\" (user: %s)",
                        zId, zComShort+1, zUserShort);
      }else{
        zFree = mprintf("[%S] Edit to wiki page \"%s\" (user: %s)",
                        zId, zComShort+1, zUserShort);
      }
    }else{
    zFree = sqlite3_mprintf("[%.10s] %s%s", zUuid, zPrefix, zCom);
    nLine += comment_print(zFree, 9, 79);
    sqlite3_free(zFree);
  }
      zFree = mprintf("[%S] %s%s", zId, zPrefix, zCom);
    }

    if( zFormat ){
      char *zEntry;
      int nEntryLine = 0;
      if( nChild==0 ){
        sqlite3_snprintf(sizeof(zPrefix)-n, &zPrefix[n], "*LEAF* ");
      }
      zEntry = timeline_entry_subst(zFormat, &nEntryLine, zId, zDate,
                                    zUserShort, zComShort, zBranch, zTags,
                                    zPrefix);
      nLine += nEntryLine;
      fossil_print("%s\n", zEntry);
      fossil_free(zEntry);
    }
    else{
      /* record another X lines */
      nLine += comment_print(zFree, zCom, 9, width, get_comment_format());
    }
    fossil_free(zFree);

    if(verboseFlag){
      if( !fchngQueryInit ){
        db_prepare(&fchngQuery,
           "SELECT (pid<=0) AS isnew,"
           "       (fid==0) AS isdel,"
           "       (SELECT name FROM filename WHERE fnid=mlink.fnid) AS name,"
           "       (SELECT uuid FROM blob WHERE rid=fid),"
           "       (SELECT uuid FROM blob WHERE rid=pid)"
           "  FROM mlink"
           " WHERE mid=:mid AND pid!=fid AND NOT mlink.isaux"
           " ORDER BY 3 /*sort*/"
        );
        fchngQueryInit = 1;
      }
      db_bind_int(&fchngQuery, ":mid", rid);
      while( db_step(&fchngQuery)==SQLITE_ROW ){
        const char *zFilename = db_column_text(&fchngQuery, 2);
        int isNew = db_column_int(&fchngQuery, 0);
        int isDel = db_column_int(&fchngQuery, 1);
        if( isNew ){
          fossil_print("   ADDED %s\n",zFilename);
        }else if( isDel ){
          fossil_print("   DELETED %s\n",zFilename);
        }else{
          fossil_print("   EDITED %s\n", zFilename);
        }
        nLine++; /* record another line */
      }
      db_reset(&fchngQuery);
      if( bVerboseNL ) fossil_print("\n");
    }else{
      if( bNoVerboseNL ) fossil_print("\n");
    }

    nEntry++; /* record another complete entry */
  }
  if( rc==SQLITE_DONE ){
    /* Did the underlying query actually have all entries? */
    if( nAbsLimit==0 ){
      fossil_print("+++ end of timeline (%d) +++\n", nEntry);
    }else{
      fossil_print("+++ no more data (%d) +++\n", nEntry);
    }
  }
  if( fchngQueryInit ) db_finalize(&fchngQuery);
}

/*
** Return a pointer to a static string that forms the basis for
** a timeline query for display on a TTY.
*/
const char *timeline_query_for_tty(void){
  static const char zBaseSql[] = 
  static const char zBaseSql[] =
    @ SELECT
    @   blob.rid,
    @   blob.rid AS rid,
    @   uuid,
    @   datetime(event.mtime,'localtime'),
    @   datetime(event.mtime,toLocal()) AS mDateTime,
    @   coalesce(ecomment,comment)
    @     || ' (user: ' || coalesce(euser,user,'?')
    @     || (SELECT case when length(x)>0 then ' tags: ' || x else '' end
    @           FROM (SELECT group_concat(substr(tagname,5), ', ') AS x
    @                   FROM tag, tagxref
    @                  WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @                    AND tagxref.rid=blob.rid AND tagxref.tagtype>0))
    @     || ')',
    @   (SELECT count(*) FROM plink WHERE pid=blob.rid AND isprim),
    @   (SELECT count(*) FROM plink WHERE cid=blob.rid)
    @ FROM event, blob
    @     || ')' as comment,
    @   (SELECT count(*) FROM plink WHERE pid=blob.rid AND isprim)
    @        AS primPlinkCount,
    @   (SELECT count(*) FROM plink WHERE cid=blob.rid) AS plinkCount,
    @   event.mtime AS mtime,
    @   tagxref.value AS branch,
    @   event.type
    @   , coalesce(ecomment,comment) AS comment0
    @   , coalesce(euser,user,'?') AS user0
    @   , (SELECT case when length(x)>0 then x else '' end
    @         FROM (SELECT group_concat(substr(tagname,5), ', ') AS x
    @         FROM tag, tagxref
    @         WHERE tagname GLOB 'sym-*' AND tag.tagid=tagxref.tagid
    @          AND tagxref.rid=blob.rid AND tagxref.tagtype>0)) AS tags
    @ FROM tag CROSS JOIN event CROSS JOIN blob
    @      LEFT JOIN tagxref ON tagxref.tagid=tag.tagid
    @   AND tagxref.tagtype>0
    @   AND tagxref.rid=blob.rid
    @ WHERE blob.rid=event.objid
    @   AND tag.tagname='branch'
  ;
  return zBaseSql;
}

/*
** Return true if the input string is a date in the ISO 8601 format:
** YYYY-MM-DD.
*/
static int isIsoDate(const char *z){
  return strlen(z)==10
      && z[4]=='-'
      && z[7]=='-'
      && isdigit(z[0])
      && isdigit(z[5]);
      && fossil_isdigit(z[0])
      && fossil_isdigit(z[5]);
}

/*
** Return true if the input string can be converted to a julianday.
*/
static int fossil_is_julianday(const char *zDate){
  return db_int(0, "SELECT EXISTS (SELECT julianday(%Q) AS jd"
                   " WHERE jd IS NOT NULL)", zDate);
}


/*
** COMMAND: timeline
**
** Usage: %fossil timeline ?WHEN? ?BASELINE|DATETIME? ?-n N? ?-t TYPE?
** Usage: %fossil timeline ?WHEN? ?CHECKIN|DATETIME? ?OPTIONS?
**
** Print a summary of activity going backwards in date and time
** specified or from the current date and time if no arguments
** are given.  Show as many as N (default 20) check-ins.  The
** WHEN argument can be any unique abbreviation of one of these
** keywords:
** are given.  The WHEN argument can be any unique abbreviation
** of one of these keywords:
**
**     before
**     after
**     descendants | children
**     ancestors | parents
**
** The BASELINE can be any unique prefix of 4 characters or more.
** The CHECKIN can be any unique prefix of 4 characters or more. You
** The DATETIME should be in the ISO8601 format.  For
** examples: "2007-08-18 07:21:21".  You can also say "current"
** for the current version or "now" for the current time.
** can also say "current" for the current version.
**
** DATETIME may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
** year-month-day form, it may be truncated, the "T" may be replaced by
** The optional TYPE argument may any types supported by the /timeline
** page. For example:
** a space, and it may also name a timezone offset from UTC as "-HH:MM"
** (westward) or "+HH:MM" (eastward). Either no timezone suffix or "Z"
** means UTC.
**
**
** Options:
**   -b|--branch BRANCH   Show only items on the branch named BRANCH
**   -c|--current-branch  Show only items on the current branch
**   -F|--format          Entry format. Values "oneline", "medium", and "full"
**                        get mapped to the full options below. Otherwise a
**                        string which can contain these placeholders:
**                            %n  newline
**                            %%  a raw %
**                            %H  commit hash
**                            %h  abbreviated commit hash
**                            %a  author name
**     w  = wiki commits only
**     ci = file commits only
**     t  = tickets only
**                            %d  date
**                            %c  comment (NL, TAB replaced by space, LF erased)
**                            %b  branch
**                            %t  tags
**                            %p  phase: zero or more of *CURRENT*, *MERGE*,
**                                      *FORK*, *UNPUBLISHED*, *LEAF*, *BRANCH*
**   --oneline            Show only short hash and comment for each entry
**   --medium             Medium-verbose entry formatting
**   --full               Extra verbose entry formatting
**   -n|--limit N         If N is positive, output the first N entries.  If
**                        N is negative, output the first -N lines.  If N is
**                        zero, no limit.  Default is -20 meaning 20 lines.
**   --offset P           Skip P changes
**   -p|--path PATH       Output items affecting PATH only.
**                        PATH can be a file or a sub directory.
**   -R REPO_FILE         Specifies the repository db to use. Default is
**                        the current check-out's repository.
**   --sql                Show the SQL used to generate the timeline
**   -t|--type TYPE       Output items from the given types only, such as:
**                            ci = file commits only
**                            e  = technical notes only
**                            f  = forum posts only
**                            t  = tickets only
**                            w  = wiki commits only
**   -v|--verbose         Output the list of files changed by each commit
**                        and the type of each change (edited, deleted,
**                        etc.) after the check-in comment.
**   -W|--width N         Width of lines (default is to auto-detect). N must be
**                        either greater than 20 or it must be zero 0 to
**                        indicate no limit, resulting in a single line per
**                        entry.
*/
void timeline_cmd(void){
  Stmt q;
  int n, k;
  const char *zCount;
  int n, k, width;
  const char *zLimit;
  const char *zWidth;
  const char *zOffset;
  const char *zType;
  char *zOrigin;
  char *zDate;
  Blob sql;
  int objid = 0;
  Blob uuid;
  int mode = TIMELINE_MODE_NONE;
  int verboseFlag = 0 ;
  int iOffset;
  const char *zFilePattern = 0;
  const char *zFormat = 0;
  const char *zBr = 0;
  Blob treeName;
  int showSql = 0;
  int mode = 0 ;       /* 0:none  1: before  2:after  3:children  4:parents */
  db_find_and_open_repository(1);
  zCount = find_option("count","n",1);

  verboseFlag = find_option("verbose","v", 0)!=0;
  if( !verboseFlag){
    verboseFlag = find_option("showfiles","f", 0)!=0; /* deprecated */
  }
  db_find_and_open_repository(0, 0);
  zLimit = find_option("limit","n",1);
  zWidth = find_option("width","W",1);
  zType = find_option("type","t",1);
  zFilePattern = find_option("path","p",1);
  zFormat = find_option("format","F",1);
  zBr = find_option("branch","b",1);
  if( find_option("current-branch","c",0)!=0 ){
    if( !g.localOpen ){
      fossil_fatal("not within an open check-out");
    }else{
      int vid = db_lget_int("checkout", 0);
      zBr = db_text(0, "SELECT value FROM tagxref WHERE rid=%d AND tagid=%d",
                    vid, TAG_BRANCH);
    }
  }
  if( find_option("oneline",0,0)!= 0 || fossil_strcmp(zFormat,"oneline")==0 ){
    zFormat = TIMELINE_FMT_ONELINE;
  }
  if( find_option("medium",0,0)!= 0 || fossil_strcmp(zFormat,"medium")==0 ){
    zFormat = TIMELINE_FMT_MEDIUM;
  }
  if( find_option("full",0,0)!= 0 || fossil_strcmp(zFormat,"full")==0 ){
    zFormat = TIMELINE_FMT_FULL;
  }
  showSql = find_option("sql",0,0)!=0;

  if( !zLimit ){
    zLimit = find_option("count",0,1);
  }
  if( zCount ){
    n = atoi(zCount);
  if( zLimit ){
    n = atoi(zLimit);
  }else{
    n = 20;
    n = -20;
  }
  if( zWidth ){
    width = atoi(zWidth);
    if( (width!=0) && (width<=20) ){
      fossil_fatal("-W|--width value must be >20 or 0");
    }
  }else{
    width = -1;
  }
  zOffset = find_option("offset",0,1);
  iOffset = zOffset ? atoi(zOffset) : 0;

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc>=4 ){
    k = strlen(g.argv[2]);
    if( strncmp(g.argv[2],"before",k)==0 ){
      mode = 1;
      mode = TIMELINE_MODE_BEFORE;
    }else if( strncmp(g.argv[2],"after",k)==0 && k>1 ){
      mode = 2;
      mode = TIMELINE_MODE_AFTER;
    }else if( strncmp(g.argv[2],"descendants",k)==0 ){
      mode = 3;
      mode = TIMELINE_MODE_CHILDREN;
    }else if( strncmp(g.argv[2],"children",k)==0 ){
      mode = 3;
      mode = TIMELINE_MODE_CHILDREN;
    }else if( strncmp(g.argv[2],"ancestors",k)==0 && k>1 ){
      mode = 4;
      mode = TIMELINE_MODE_PARENTS;
    }else if( strncmp(g.argv[2],"parents",k)==0 ){
      mode = 4;
    }else if(!zType && !zCount){
      usage("?WHEN? ?BASELINE|DATETIME? ?-n|--count N? ?-t TYPE?");
      mode = TIMELINE_MODE_PARENTS;
    }else if(!zType && !zLimit){
      usage("?WHEN? ?CHECKIN|DATETIME? ?-n|--limit #? ?-t|--type TYPE? "
            "?-W|--width WIDTH? ?-p|--path PATH?");
    }
    if( '-' != *g.argv[3] ){
	zOrigin = g.argv[3];
      zOrigin = g.argv[3];
    }else{
	zOrigin = "now";
      zOrigin = "now";
    }
  }else if( g.argc==3 ){
    zOrigin = g.argv[2];
  }else{
    zOrigin = "now";
  }
  k = strlen(zOrigin);
  blob_zero(&uuid);
  blob_append(&uuid, zOrigin, -1);
  if( strcmp(zOrigin, "now")==0 ){
    if( mode==3 || mode==4 ){
  if( fossil_strcmp(zOrigin, "now")==0 ){
    if( mode==TIMELINE_MODE_CHILDREN || mode==TIMELINE_MODE_PARENTS ){
      fossil_fatal("cannot compute descendants or ancestors of a date");
    }
    zDate = mprintf("(SELECT datetime('now'))");
  }else if( strncmp(zOrigin, "current", k)==0 ){
    if( !g.localOpen ){
      fossil_fatal("must be within a local checkout to use 'current'");
      fossil_fatal("must be within a local check-out to use 'current'");
    }
    objid = db_lget_int("checkout",0);
    zDate = mprintf("(SELECT mtime FROM plink WHERE cid=%d)", objid);
  }else if( name_to_uuid(&uuid, 0)==0 ){
  }else if( fossil_is_julianday(zOrigin) ){
    objid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &uuid);
    zDate = mprintf("(SELECT mtime FROM plink WHERE cid=%d)", objid);
  }else{
    const char *zShift = "";
    if( mode==3 || mode==4 ){
    if( mode==TIMELINE_MODE_CHILDREN || mode==TIMELINE_MODE_PARENTS ){
      fossil_fatal("cannot compute descendants or ancestors of a date");
    }
    if( mode==0 ){
    if( mode==TIMELINE_MODE_NONE ){
      if( isIsoDate(zOrigin) ) zShift = ",'+1 day'";
    }
    zDate = mprintf("(SELECT julianday(%Q%s, 'utc'))", zOrigin, zShift);
    zDate = mprintf("(SELECT julianday(%Q%s, fromLocal()))", zOrigin, zShift);
  }else if( name_to_uuid(&uuid, 0, "*")==0 ){
    objid = db_int(0, "SELECT rid FROM blob WHERE uuid=%B", &uuid);
    zDate = mprintf("(SELECT mtime FROM event WHERE objid=%d)", objid);
  }else{
    fossil_fatal("unknown check-in or invalid date: %s", zOrigin);
  }
  if( mode==0 ) mode = 1;

  if( zFilePattern ){
    if( zType==0 ){
      /* When zFilePattern is specified and type is not specified, only show
       * file check-ins */
      zType="ci";
    }
    file_tree_name(zFilePattern, &treeName, 0, 1);
    if( fossil_strcmp(blob_str(&treeName), ".")==0 ){
      /* When zTreeName refers to g.zLocalRoot, it's like not specifying
       * zFilePattern. */
      zFilePattern = 0;
    }
  }

  if( mode==TIMELINE_MODE_NONE ) mode = TIMELINE_MODE_BEFORE;
  blob_zero(&sql);
  blob_append(&sql, timeline_query_for_tty(), -1);
  blob_appendf(&sql, "  AND event.mtime %s %s",
     (mode==1 || mode==4) ? "<=" : ">=",
     zDate
  blob_append_sql(&sql, "\n  AND event.mtime %s %s",
     ( mode==TIMELINE_MODE_BEFORE ||
       mode==TIMELINE_MODE_PARENTS ) ? "<=" : ">=", zDate /*safe-for-%s*/
  );

  /* When zFilePattern is specified, compute complete ancestry;
   * limit later at print_timeline() */
  if( mode==3 || mode==4 ){
  if( mode==TIMELINE_MODE_CHILDREN || mode==TIMELINE_MODE_PARENTS ){
    db_multi_exec("CREATE TEMP TABLE ok(rid INTEGER PRIMARY KEY)");
    if( mode==3 ){
      compute_descendants(objid, n);
    if( mode==TIMELINE_MODE_CHILDREN ){
      compute_descendants(objid, (zFilePattern ? 0 : n));
    }else{
      compute_ancestors(objid, n);
      compute_ancestors(objid, (zFilePattern ? 0 : n), 0, 0);
    }
    blob_appendf(&sql, " AND blob.rid IN ok");
    blob_append_sql(&sql, "\n  AND blob.rid IN ok");
  }
  if( zType && (zType[0]!='a') ){
    blob_appendf(&sql, " AND event.type=%Q ", zType);
    blob_append_sql(&sql, "\n  AND event.type=%Q ", zType);
  }
  if( zFilePattern ){
    blob_append(&sql,
       "\n  AND EXISTS(SELECT 1 FROM mlink\n"
         "              WHERE mlink.mid=event.objid\n"
         "                AND mlink.fnid IN ", -1);
    if( filenames_are_case_sensitive() ){
      blob_append_sql(&sql,
        "(SELECT fnid FROM filename"
        " WHERE name=%Q"
        " OR name GLOB '%q/*')",
        blob_str(&treeName), blob_str(&treeName));
    }else{
      blob_append_sql(&sql,
        "(SELECT fnid FROM filename"
        " WHERE name=%Q COLLATE nocase"
        " OR lower(name) GLOB lower('%q/*'))",
        blob_str(&treeName), blob_str(&treeName));

  blob_appendf(&sql, " ORDER BY event.mtime DESC");
  db_prepare(&q, blob_str(&sql));
    }
    blob_append(&sql, ")", -1);
  }
  if( zBr ){
    blob_append_sql(&sql,
      "\n  AND blob.rid IN (\n"                          /* Commits */
      "      SELECT rid FROM tagxref NATURAL JOIN tag\n"
      "        WHERE tagtype>0 AND tagname='sym-%q'\n"
      "      UNION\n"                                    /* Tags */
      "      SELECT srcid FROM tagxref WHERE origid IN (\n"
      "        SELECT rid FROM tagxref NATURAL JOIN tag\n"
      "          WHERE tagname='sym-%q')\n"
      "      UNION\n"                                    /* Branch wikis */
      "      SELECT objid FROM event WHERE comment LIKE '_branch/%q'\n"
      "      UNION\n"                                    /* Check-in wikis */
      "      SELECT e.objid FROM event e\n"
      "        INNER JOIN blob b ON b.uuid=substr(e.comment, 10)\n"
      "                          AND e.comment LIKE '_checkin/%%'\n"
      "        LEFT JOIN tagxref tx ON tx.rid=b.rid AND tx.tagid=%d\n"
      "          WHERE tx.value='%q'\n"
      ")\n"                                              /* No merge closures */
      "  AND (tagxref.value IS NULL OR tagxref.value='%q')",
      zBr, zBr, zBr, TAG_BRANCH, zBr, zBr);
  }
  blob_append_sql(&sql, "\nORDER BY event.mtime DESC");
  if( iOffset>0 ){
    /* Don't handle LIMIT here, otherwise print_timeline()
     * will not determine the end-marker correctly! */
    blob_append_sql(&sql, "\n LIMIT -1 OFFSET %d", iOffset);
  }
  if( showSql ){
    fossil_print("%s\n", blob_str(&sql));
  }
  db_prepare_blob(&q, &sql);
  blob_reset(&sql);
  print_timeline(&q, n);
  print_timeline(&q, n, width, zFormat, verboseFlag);
  db_finalize(&q);
}

/*
** WEBPAGE: thisdayinhistory
**
** Generate a vanity page that shows project activity for the current
** day of the year for various years in the history of the project.
**
** Query parameters:
**
**    today=DATE             Use DATE as today's date
*/
void thisdayinhistory_page(void){
  static int aYearsAgo[] = { 1, 2, 3, 4, 5, 10, 15, 20, 30, 40, 50, 75, 100 };
  const char *zToday;
  char *zStartOfProject;
  int i;
  Stmt q;
  char *z;
** This is a version of the "localtime()" function from the standard
** C library.  It converts a unix timestamp (seconds since 1970) into
** a broken-out local time structure.

  login_check_credentials();
  if( (!g.perm.Read && !g.perm.RdTkt && !g.perm.RdWiki && !g.perm.RdForum) ){
    login_needed(g.anon.Read && g.anon.RdTkt && g.anon.RdWiki);
    return;
  }
  style_set_current_feature("timeline");
  style_header("Today In History");
  zToday = (char*)P("today");
  if( zToday ){
    zToday = timeline_expand_datetime(zToday);
    if( !fossil_isdate(zToday) ) zToday = 0;
  }
  if( zToday==0 ){
    zToday = db_text(0, "SELECT date('now',toLocal())");
  }
  @ <h1>This Day In History For %h(zToday)</h1>
  z = db_text(0, "SELECT date(%Q,'-1 day')", zToday);
  style_submenu_element("Yesterday", "%R/thisdayinhistory?today=%t", z);
  z = db_text(0, "SELECT date(%Q,'+1 day')", zToday);
  style_submenu_element("Tomorrow", "%R/thisdayinhistory?today=%t", z);
  zStartOfProject = db_text(0,
      "SELECT datetime(min(mtime),toLocal(),'startofday') FROM event;"
  );
  timeline_temp_table();
  db_prepare(&q, "SELECT * FROM timeline ORDER BY sortby DESC /*scan*/");
  for(i=0; i<(int)(sizeof(aYearsAgo)/sizeof(aYearsAgo[0])); i++){
    int iAgo = aYearsAgo[i];
    char *zThis = db_text(0, "SELECT date(%Q,'-%d years')", zToday, iAgo);
    Blob sql;
    char *zId;
    if( strcmp(zThis, zStartOfProject)<0 ) break;
    blob_init(&sql, 0, 0);
    blob_append(&sql, "INSERT OR IGNORE INTO timeline ", -1);
    blob_append(&sql, timeline_query_for_www(), -1);
    blob_append_sql(&sql,
       " AND %Q=date(event.mtime,toLocal()) "
       " AND event.mtime BETWEEN julianday(%Q,'-1 day')"
             " AND julianday(%Q,'+2 days')",
       zThis, zThis, zThis
    );
    db_multi_exec("DELETE FROM timeline; %s;", blob_sql_text(&sql));
    blob_reset(&sql);
    if( db_int(0, "SELECT count(*) FROM timeline")==0 ){
      continue;
    }
    zId = db_text(0, "SELECT timestamp FROM timeline"
                     " ORDER BY sortby DESC LIMIT 1");
    @ <h2>%d(iAgo) Year%s(iAgo>1?"s":"") Ago
    @ <small>%z(href("%R/timeline?c=%t",zId))(more context)</a>\
    @ </small></h2>
    www_print_timeline(&q, TIMELINE_GRAPH, 0, 0, 0, 0, 0, 0);
  }
  db_finalize(&q);
  style_finish_page();
}


/*
** COMMAND: test-timewarp-list
**
** Usage: %fossil test-timewarp-list ?-v|---verbose?
**
** Display all instances of child check-ins that appear earlier in time
** than their parent.  If the -v|--verbose option is provided, both the
** parent and child check-ins and their times are shown.
*/
void test_timewarp_cmd(void){
  Stmt q;
  int verboseFlag;

  db_find_and_open_repository(0, 0);
  verboseFlag = find_option("verbose", "v", 0)!=0;
  if( !verboseFlag ){
    verboseFlag = find_option("detail", 0, 0)!=0; /* deprecated */
  }
  db_prepare(&q,
     "SELECT (SELECT uuid FROM blob WHERE rid=p.cid),"
     "       (SELECT uuid FROM blob WHERE rid=c.cid),"
     "       datetime(p.mtime), datetime(c.mtime)"
     "  FROM plink p, plink c"
     " WHERE p.cid=c.pid  AND p.mtime>c.mtime"
  );
  while( db_step(&q)==SQLITE_ROW ){
    if( !verboseFlag ){
      fossil_print("%s\n", db_column_text(&q, 1));
    }else{
      fossil_print("%.14s -> %.14s   %s -> %s\n",
         db_column_text(&q, 0),
         db_column_text(&q, 1),
         db_column_text(&q, 2),
         db_column_text(&q, 3));
    }
  }
  db_finalize(&q);
}

/*
** WEBPAGE: timewarps
**
** This modified version of localtime() works like the library localtime()
** by default.  Except if the timeline-utc property is set, this routine
** uses gmttime() instead.  Thus by setting the timeline-utc property, we
** can get all localtimes to be displayed at UTC time.
** Show all check-ins that are "timewarps".  A timewarp is a
** check-in that occurs before its parent, according to the
** timestamp information on the check-in.  This can only actually
** happen, of course, if a users system clock is set incorrectly.
*/
void test_timewarp_page(void){
  Stmt q;
  int cnt = 0;
struct tm *fossil_localtime(const time_t *clock){
  if( g.fTimeFormat==0 ){

  login_check_credentials();
  if( !g.perm.Read || !g.perm.Hyperlink ){
    login_needed(g.anon.Read && g.anon.Hyperlink);
    return;
  }
  style_header("Instances of timewarp");
  db_prepare(&q,
     "SELECT blob.uuid, "
     "       date(ce.mtime),"
     "       pe.mtime>ce.mtime,"
     "       coalesce(ce.euser,ce.user)"
     "  FROM plink p, plink c, blob, event pe, event ce"
     " WHERE p.cid=c.pid  AND p.mtime>c.mtime"
     "   AND blob.rid=c.cid"
     "   AND pe.objid=p.cid"
     "   AND ce.objid=c.cid"
     " ORDER BY 2 DESC"
  );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zCkin = db_column_text(&q, 0);
    const char *zDate = db_column_text(&q, 1);
    const char *zStatus = db_column_int(&q,2) ? "Open"
                                 : "Resolved by editing date";
    const char *zUser = db_column_text(&q, 3);
    char *zHref = href("%R/timeline?c=%S", zCkin);
    if( cnt==0 ){
    if( db_get_int("timeline-utc", 1) ){
      g.fTimeFormat = 1;
    }else{
      g.fTimeFormat = 2;
      style_table_sorter();
      @ <div class="brlist">
      @ <table class='sortable' data-column-types='tttt' data-init-sort='2'>
      @ <thead><tr>
      @ <th>Check-in</th>
      @ <th>Date</th>
      @ <th>User</th>
      @ <th>Status</th>
      @ </tr></thead><tbody>
    }
    @ <tr>
    @ <td>%s(zHref)%S(zCkin)</a></td>
    @ <td>%s(zHref)%s(zDate)</a></td>
    @ <td>%h(zUser)</td>
    @ <td>%s(zStatus)</td>
    @ </tr>
    fossil_free(zHref);
    cnt++;
  }
  db_finalize(&q);
  if( g.fTimeFormat==1 ){
    return gmtime(clock);
  if( cnt==0 ){
    @ <p>No timewarps in this repository</p>
  }else{
    return localtime(clock);
    @ </tbody></table></div>
  }
  style_finish_page();
}
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#include "config.h"
#include "tkt.h"
#include <assert.h>

/*
** The list of database user-defined fields in the TICKET table.
** The real table also contains some addition fields for internal
** used.  The internal-use fields begin with "tkt_".
** use.  The internal-use fields begin with "tkt_".
*/
static int nField = 0;
static struct tktFieldInfo {
static char **azField = 0;    /* Names of database fields */
static char **azValue = 0;    /* Original values */
static char **azAppend = 0;   /* Value to be appended */
  char *zName;             /* Name of the database field */
  char *zValue;            /* Value to store */
  char *zAppend;           /* Value to append */
  char *zBsln;             /* "baseline for $zName" if that field exists*/
  unsigned mUsed;          /* 01: TICKET  02: TICKETCHNG */
} *aField;
#define USEDBY_TICKET      01
#define USEDBY_TICKETCHNG  02
#define USEDBY_BOTH        03
#define JCARD_ASSIGN     ('=')
#define JCARD_APPEND     ('+')
#define JCARD_PRIVATE    ('p')
static u8 haveTicket = 0;        /* True if the TICKET table exists */
static u8 haveTicketCTime = 0;   /* True if TICKET.TKT_CTIME exists */
static u8 haveTicketChng = 0;    /* True if the TICKETCHNG table exists */
static u8 haveTicketChngRid = 0; /* True if TICKETCHNG.TKT_RID exists */
static u8 haveTicketChngUser = 0;/* True if TICKETCHNG.TKT_USER exists */
static u8 useTicketGenMt = 0;    /* use generated TICKET.MIMETYPE */
static u8 useTicketChngGenMt = 0;/* use generated TICKETCHNG.MIMETYPE */
static int nTicketBslns = 0;     /* number of valid "baseline for ..." */


/*
** Compare two entries in azField for sorting purposes
** Compare two entries in aField[] for sorting purposes
*/
static int nameCmpr(const void *a, const void *b){
  return fossil_strcmp(((const struct tktFieldInfo*)a)->zName,
                       ((const struct tktFieldInfo*)b)->zName);
}

/*
** Return the index into aField[] of the given field name.
** Return -1 if zFieldName is not in aField[].
*/
static int fieldId(const char *zFieldName){
  int i;
  for(i=0; i<nField; i++){
    if( fossil_strcmp(aField[i].zName, zFieldName)==0 ) return i;
  }
  return strcmp(*(char**)a, *(char**)b);
  return -1;
}

/*
** Obtain a list of all fields of the TICKET table.  Put them 
** in sorted order in azField[].
** Obtain a list of all fields of the TICKET and TICKETCHNG tables.  Put them
** in sorted order in aField[].
**
** Also allocate space for azValue[] and azAppend[] and initialize
** all the values there to zero.
** The haveTicket and haveTicketChng variables are set to 1 if the TICKET and
** TICKETCHANGE tables exist, respectively.
*/
static void getAllTicketFields(void){
  Stmt q;
  int i, noRegularMimetype, nBaselines;
  int i;
  if( nField>0 ) return;
  static int once = 0;
  if( once ) return;
  once = 1;
  nBaselines = 0;
  db_prepare(&q, "PRAGMA table_info(ticket)");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zField = db_column_text(&q, 1);
    if( strncmp(zField,"tkt_",4)==0 ) continue;
    const char *zFieldName = db_column_text(&q, 1);
    haveTicket = 1;
    if( memcmp(zFieldName,"tkt_",4)==0 ){
      if( strcmp(zFieldName, "tkt_ctime")==0 ) haveTicketCTime = 1;
      continue;
    }
    if( memcmp(zFieldName,"baseline for ",13)==0 ){
      if( strcmp(db_column_text(&q,2),"INTEGER")==0 ){
        nBaselines++;
      }
      continue;
    }
    if( strchr(zFieldName,' ')!=0 ) continue;
    if( nField%10==0 ){
      azField = realloc(azField, sizeof(azField)*3*(nField+10) );
      if( azField==0 ){
        fossil_fatal("out of memory");
      aField = fossil_realloc(aField, sizeof(aField[0])*(nField+10) );
    }
    aField[nField].zBsln = 0;
    aField[nField].zName = mprintf("%s", zFieldName);
    aField[nField].mUsed = USEDBY_TICKET;
    nField++;
  }
  db_finalize(&q);
  if( nBaselines ){
    db_prepare(&q, "SELECT 1 FROM pragma_table_info('ticket') "
                   "WHERE type = 'INTEGER' AND name = :n");
    for(i=0; i<nField && nBaselines!=0; i++){
      char *zBsln = mprintf("baseline for %s",aField[i].zName);
      db_bind_text(&q, ":n", zBsln);
      if( db_step(&q)==SQLITE_ROW ){
        aField[i].zBsln = zBsln;
        nTicketBslns++;
        nBaselines--;
      }else{
        free(zBsln);
      }
      db_reset(&q);
    }
    db_finalize(&q);
  }
  db_prepare(&q, "PRAGMA table_info(ticketchng)");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFieldName = db_column_text(&q, 1);
    haveTicketChng = 1;
    if( memcmp(zFieldName,"tkt_",4)==0 ){
      if( strcmp(zFieldName+4,"rid")==0 ){
        haveTicketChngRid = 1;  /* tkt_rid */
      }else if( strcmp(zFieldName+4,"user")==0 ){
        haveTicketChngUser = 1; /* tkt_user */
      }
      continue;
    }
    if( strchr(zFieldName,' ')!=0 ) continue;
    if( (i = fieldId(zFieldName))>=0 ){
      aField[i].mUsed |= USEDBY_TICKETCHNG;
      continue;
    }
    if( nField%10==0 ){
      aField = fossil_realloc(aField, sizeof(aField[0])*(nField+10) );
    }
    aField[nField].zBsln = 0;
    azField[nField] = mprintf("%s", zField);
    aField[nField].zName = mprintf("%s", zFieldName);
    aField[nField].mUsed = USEDBY_TICKETCHNG;
    nField++;
  }
  db_finalize(&q);
  qsort(azField, nField, sizeof(azField[0]), nameCmpr);
  qsort(aField, nField, sizeof(aField[0]), nameCmpr);
  azAppend = &azField[nField];
  memset(azAppend, 0, sizeof(azAppend[0])*nField);
  azValue = &azAppend[nField];
  noRegularMimetype = 1;
  for(i=0; i<nField; i++){
    azValue[i] = "";
  }
}

    aField[i].zValue = "";
    aField[i].zAppend = 0;
    if( strcmp(aField[i].zName,"mimetype")==0 ){
      noRegularMimetype = 0;
    }
  }
  if( noRegularMimetype ){ /* check for generated "mimetype" columns */
/*
** Return the index into azField[] of the given field name.
    useTicketGenMt = db_exists(
      "SELECT 1 FROM pragma_table_xinfo('ticket') "
      "WHERE name = 'mimetype'");
** Return -1 if zField is not in azField[].
*/
static int fieldId(const char *zField){
  int i;
  for(i=0; i<nField; i++){
    useTicketChngGenMt = db_exists(
      "SELECT 1 FROM pragma_table_xinfo('ticketchng') "
      "WHERE name = 'mimetype'");
    if( strcmp(azField[i], zField)==0 ) return i;
  }
  return -1;
}

/*
** Query the database for all TICKET fields for the specific
** ticket whose name is given by the "name" CGI parameter.
** Load the values for all fields into the interpreter.
**
** Only load those fields which do not already exist as
** variables.
**
** Fields of the TICKET table that begin with "private_" are
** expanded using the db_reveal() function.  If g.okRdAddr is
** expanded using the db_reveal() function.  If g.perm.RdAddr is
** true, then the db_reveal() function will decode the content
** using the CONCEALED table so that the content legable.
** using the CONCEALED table so that the content legible.
** Otherwise, db_reveal() is a no-op and the content remains
** obscured.
*/
static void initializeVariablesFromDb(void){
  const char *zName;
  Stmt q;
  int i, n, size, j;

  zName = PD("name","-none-");
  db_prepare(&q, "SELECT datetime(tkt_mtime) AS tkt_datetime, *"
                 "  FROM ticket WHERE tkt_uuid GLOB '%q*'", zName);
  db_prepare(&q, "SELECT datetime(tkt_mtime,toLocal()) AS tkt_datetime, *"
                 "  FROM ticket WHERE tkt_uuid GLOB '%q*'",
                 zName);
  if( db_step(&q)==SQLITE_ROW ){
    n = db_column_count(&q);
    for(i=0; i<n; i++){
      const char *zVal = db_column_text(&q, i);
      const char *zName = db_column_name(&q, i);
      char *zRevealed = 0;
      if( zVal==0 ){
        zVal = "";
      }else if( strncmp(zName, "private_", 8)==0 ){
        zVal = zRevealed = db_reveal(zVal);
      }
      for(j=0; j<nField; j++){
        if( strcmp(azField[j],zName)==0 ){
          azValue[j] = mprintf("%s", zVal);
      if( (j = fieldId(zName))>=0 ){
        aField[j].zValue = mprintf("%s", zVal);
          break;
        }
      }
      if( Th_Fetch(zName, &size)==0 ){
      }else if( memcmp(zName, "tkt_", 4)==0 && Th_Fetch(zName, &size)==0 ){
        Th_Store(zName, zVal);
      }
      free(zRevealed);
    }
  }else{
    db_finalize(&q);
    db_prepare(&q, "PRAGMA table_info(ticket)");
    if( Th_Fetch("tkt_uuid",&size)==0 ){
      Th_Store("tkt_uuid",zName);
    }
    while( db_step(&q)==SQLITE_ROW ){
  }
  db_finalize(&q);
      const char *zField = db_column_text(&q, 1);
      if( Th_Fetch(zField, &size)==0 ){
        Th_Store(zField, "");
  for(i=0; i<nField; i++){
      }
    }
    if( Th_Fetch("tkt_datetime",&size)==0 ){
      Th_Store("tkt_datetime","");
    if( Th_Fetch(aField[i].zName, &size)==0 ){
      Th_Store(aField[i].zName, aField[i].zValue);
    }
  }
  db_finalize(&q);
}

/*
** Transfer all CGI parameters to variables in the interpreter.
*/
static void initializeVariablesFromCGI(void){
  int i;
  const char *z;

  for(i=0; (z = cgi_parameter_name(i))!=0; i++){
    Th_Store(z, P(z));
  }
}

/*
** Information about a single J-card
*/
struct jCardInfo {
  char  *zValue;
  int    mimetype;
  int    rid;
  double mtime;
};

/*
** Update an entry of the TICKET table according to the information
** in the control file given in p.  Attempt to create the appropriate
** TICKET table entry if createFlag is true.  If createFlag is false,
** Update an entry of the TICKET and TICKETCHNG tables according to the
** information in the ticket artifact given in p.  Attempt to create
** the appropriate TICKET table entry if tktid is zero.  If tktid is nonzero
** that means we already know the entry exists and so we can save the
** work of trying to create it.
** then it will be the ROWID of an existing TICKET entry.
**
** Parameter rid is the recordID for the ticket artifact in the BLOB table.
** Upon assignment of a field this rid is stored into a corresponding
** zBsln integer column (provided that it is defined within TICKET table).
**
** If a field is USEDBY_TICKETCHNG table then back-references within it
** are extracted and inserted into the BACKLINK table; otherwise
** a corresponding blob in the `fields` array is updated so that the
** caller could extract backlinks from the most recent field's values.
**
** Return TRUE if a new TICKET entry was created and FALSE if an
** Return the new rowid of the TICKET table entry.
** existing entry was revised.
*/
int ticket_insert(const Manifest *p, int createFlag, int rid){
  Blob sql;
static int ticket_insert(const Manifest *p, const int rid, int tktid,
                         Blob *fields){
  Blob sql1; /* update or replace TICKET ... */
  Blob sql2; /* list of TICKETCHNG's fields that are in the manifest */
  Blob sql3; /* list of values which correspond to the previous list */
  Stmt q;
  int i;
  const char *zSep;
  int rc = 0;
  int i, j;
  char *aUsed;
  int mimetype_tkt = MT_NONE, mimetype_tktchng = MT_NONE;

  getAllTicketFields();
  if( createFlag ){  
    db_multi_exec("INSERT OR IGNORE INTO ticket(tkt_uuid, tkt_mtime) "
  if( tktid==0 ){
    db_multi_exec("INSERT INTO ticket(tkt_uuid, tkt_mtime) "
                  "VALUES(%Q, 0)", p->zTicketUuid);
    rc = db_changes();
    tktid = db_last_insert_rowid();
  }
  blob_zero(&sql);
  blob_appendf(&sql, "UPDATE OR REPLACE ticket SET tkt_mtime=:mtime");
  zSep = "SET";
  blob_zero(&sql1);
  blob_zero(&sql2);
  blob_zero(&sql3);
  blob_append_sql(&sql1, "UPDATE OR REPLACE ticket SET tkt_mtime=:mtime");
  if( haveTicketCTime ){
    blob_append_sql(&sql1, ", tkt_ctime=coalesce(tkt_ctime,:mtime)");
  }
  aUsed = fossil_malloc_zero( nField );
  for(i=0; i<p->nField; i++){
    const char *zName = p->aField[i].zName;
    if( zName[0]=='+' ){
      zName++;
      if( fieldId(zName)<0 ) continue;
      blob_appendf(&sql,", %s=coalesce(%s,'') || %Q",
                   zName, zName, p->aField[i].zValue);
    }else{
      if( fieldId(zName)<0 ) continue;
      blob_appendf(&sql,", %s=%Q", zName, p->aField[i].zValue);
    const char * const zName = p->aField[i].zName;
    const char * const zBaseName = zName[0]=='+' ? zName+1 : zName;
    j = fieldId(zBaseName);
    if( j<0 ) continue;
    aUsed[j] = 1;
    if( aField[j].mUsed & USEDBY_TICKET ){
      if( zName[0]=='+' ){
        blob_append_sql(&sql1,", \"%w\"=coalesce(\"%w\",'') || %Q",
                        zBaseName, zBaseName, p->aField[i].zValue);
        /* when appending keep "baseline for ..." unchanged */
      }else{
        blob_append_sql(&sql1,", \"%w\"=%Q", zBaseName, p->aField[i].zValue);
        if( aField[j].zBsln ){
          blob_append_sql(&sql1,", \"%w\"=%d", aField[j].zBsln, rid);
        }
      }
    }
    if( aField[j].mUsed & USEDBY_TICKETCHNG ){
      blob_append_sql(&sql2, ",\"%w\"", zBaseName);
      blob_append_sql(&sql3, ",%Q", p->aField[i].zValue);
    }
    if( rid>0 ){
      wiki_extract_links(p->aField[i].zValue, rid, 1, p->rDate, i==0, 0);
    if( strcmp(zBaseName,"mimetype")==0 ){
      const char *zMimetype = p->aField[i].zValue;
      /* "mimetype" is a regular column => these two flags must be 0 */
      assert(!useTicketGenMt);
      assert(!useTicketChngGenMt);
      mimetype_tkt = mimetype_tktchng = parse_mimetype( zMimetype );
    }
  }
  blob_appendf(&sql, " WHERE tkt_uuid='%s' AND tkt_mtime<:mtime",
                     p->zTicketUuid);
  db_prepare(&q, "%s", blob_str(&sql));
  blob_append_sql(&sql1, " WHERE tkt_id=%d", tktid);
  if( useTicketGenMt ){
    blob_append_literal(&sql1, " RETURNING mimetype");
  }
  db_prepare(&q, "%s", blob_sql_text(&sql1));
  db_bind_double(&q, ":mtime", p->rDate);
  db_step(&q);
  if( useTicketGenMt ){
    mimetype_tkt = parse_mimetype( db_column_text(&q,0) );
    if( !useTicketChngGenMt ){
      mimetype_tktchng = mimetype_tkt;
    }
  }
  db_finalize(&q);
  blob_reset(&sql);
  return rc;
  blob_reset(&sql1);
  if( blob_size(&sql2)>0 || haveTicketChngRid || haveTicketChngUser ){
    int fromTkt = 0;
    if( haveTicketChngRid ){
      blob_append_literal(&sql2, ",tkt_rid");
      blob_append_sql(&sql3, ",%d", rid);
    }
    if( haveTicketChngUser && p->zUser ){
      blob_append_literal(&sql2, ",tkt_user");
      blob_append_sql(&sql3, ",%Q", p->zUser);
    }
    for(i=0; i<nField; i++){
      if( aUsed[i]==0
       && (aField[i].mUsed & USEDBY_BOTH)==USEDBY_BOTH
      ){
        const char *z = aField[i].zName;
        if( z[0]=='+' ) z++;
        fromTkt = 1;
        blob_append_sql(&sql2, ",\"%w\"", z);
        blob_append_sql(&sql3, ",\"%w\"", z);
      }
    }
    if( fromTkt ){
      db_prepare(&q, "INSERT INTO ticketchng(tkt_id,tkt_mtime%s)"
                     "SELECT %d,:mtime%s FROM ticket WHERE tkt_id=%d%s",
                     blob_sql_text(&sql2), tktid,
                     blob_sql_text(&sql3), tktid,
                     useTicketChngGenMt ? " RETURNING mimetype" : "");
    }else{
      db_prepare(&q, "INSERT INTO ticketchng(tkt_id,tkt_mtime%s)"
                     "VALUES(%d,:mtime%s)%s",
                     blob_sql_text(&sql2), tktid, blob_sql_text(&sql3),
                     useTicketChngGenMt ? " RETURNING mimetype" : "");
    }
    db_bind_double(&q, ":mtime", p->rDate);
    db_step(&q);
    if( useTicketChngGenMt ){
      mimetype_tktchng = parse_mimetype( db_column_text(&q, 0) );
      /* substitute NULL with a value generated within another table */
      if( !useTicketGenMt ){
        mimetype_tkt = mimetype_tktchng;
      }else if( mimetype_tktchng==MT_NONE ){
        mimetype_tktchng = mimetype_tkt;
      }else if( mimetype_tkt==MT_NONE ){
        mimetype_tkt = mimetype_tktchng;
      }
    }
    db_finalize(&q);
  }
  blob_reset(&sql2);
  blob_reset(&sql3);
  fossil_free(aUsed);
  if( rid>0 ){                   /* extract backlinks */
    for(i=0; i<p->nField; i++){
      const char *zName = p->aField[i].zName;
      const char *zBaseName = zName[0]=='+' ? zName+1 : zName;
      j = fieldId(zBaseName);
      if( j<0 ) continue;
      if( aField[j].mUsed & USEDBY_TICKETCHNG ){
        backlink_extract(p->aField[i].zValue, mimetype_tktchng,
                         rid, BKLNK_TICKET, p->rDate,
                          /* existing backlinks must have been
                           * already deleted by the caller */ 0 );
      }else{
        /* update field's data with the most recent values */
        Blob *cards = fields + j;
        struct jCardInfo card = {
          fossil_strdup(p->aField[i].zValue),
          mimetype_tkt, rid, p->rDate
        };
        if( blob_size(cards) && zName[0]!='+' ){
          struct jCardInfo *x = (struct jCardInfo *)blob_buffer(cards);
          struct jCardInfo *end = x + blob_count(cards,struct jCardInfo);
          for(; x!=end; x++){
            fossil_free( x->zValue );
          }
          blob_truncate(cards,0);
        }
        blob_append(cards, (const char*)(&card), sizeof(card));
      }
    }
  }
  return tktid;
}

/*
** Returns non-zero if moderation is required for ticket changes and ticket
** attachments.
*/
int ticket_need_moderation(
  int localUser /* Are we being called for a local interactive user? */
){
  /*
  ** If the FOSSIL_FORCE_TICKET_MODERATION variable is set, *ALL* changes for
  ** tickets will be required to go through moderation (even those performed
  ** by the local interactive user via the command line).  This can be useful
  ** for local (or remote) testing of the moderation subsystem and its impact
  ** on the contents and status of tickets.
  */
  if( fossil_getenv("FOSSIL_FORCE_TICKET_MODERATION")!=0 ){
    return 1;
  }
  if( localUser ){
    return 0;
  }
  return g.perm.ModTkt==0 && db_get_boolean("modreq-tkt",0)==1;
}

/*
** Rebuild an entire entry in the TICKET table
*/
void ticket_rebuild_entry(const char *zTktUuid){
  char *zTag = mprintf("tkt-%s", zTktUuid);
  int tagid = tag_findid(zTag, 1);
  Stmt q;
  Manifest manifest;
  Blob content;
  Manifest *pTicket;
  int tktid, i;
  int createFlag = 1;
  Blob *fields;  /* array of blobs; each blob holds array of jCardInfo */
  
  db_multi_exec(
     "DELETE FROM ticket WHERE tkt_uuid=%Q", zTktUuid
  );

  fossil_free(zTag);
  getAllTicketFields();
  if( haveTicket==0 ) return;
  tktid = db_int(0, "SELECT tkt_id FROM ticket WHERE tkt_uuid=%Q", zTktUuid);
  if( tktid!=0 ) search_doc_touch('t', tktid, 0);
  if( haveTicketChng ){
    db_multi_exec("DELETE FROM ticketchng WHERE tkt_id=%d;", tktid);
  }
  db_multi_exec("DELETE FROM ticket WHERE tkt_id=%d", tktid);
  tktid = 0;
  fields = blobarray_new( nField );
  db_multi_exec("DELETE FROM backlink WHERE srctype=%d AND srcid IN "
                "(SELECT rid FROM tagxref WHERE tagid=%d)",BKLNK_TICKET, tagid);
  db_prepare(&q, "SELECT rid FROM tagxref WHERE tagid=%d ORDER BY mtime",tagid);
  while( db_step(&q)==SQLITE_ROW ){
    int rid = db_column_int(&q, 0);
    content_get(rid, &content);
    pTicket = manifest_get(rid, CFTYPE_TICKET, 0);
    manifest_parse(&manifest, &content);
    ticket_insert(&manifest, createFlag, rid);
    manifest_ticket_event(rid, &manifest, createFlag, tagid);
    manifest_clear(&manifest);
    if( pTicket ){
      tktid = ticket_insert(pTicket, rid, tktid, fields);
      manifest_ticket_event(rid, pTicket, createFlag, tagid);
      manifest_destroy(pTicket);
    }
    createFlag = 0;
  }
  db_finalize(&q);
  search_doc_touch('t', tktid, 0);
  /* Extract backlinks from the most recent values of TICKET fields */
  for(i=0; i<nField; i++){
    Blob *cards = fields + i;
    if( blob_size(cards) ){
      struct jCardInfo *x = (struct jCardInfo *)blob_buffer(cards);
      struct jCardInfo *end = x + blob_count(cards,struct jCardInfo);
      for(; x!=end; x++){
        assert( x->zValue );
        backlink_extract(x->zValue,x->mimetype,
                         x->rid,BKLNK_TICKET,x->mtime,0);
        fossil_free( x->zValue );
}

      }
    }
    blob_truncate(cards,0);
  }
  blobarray_delete(fields,nField);
}


/*
** Create the subscript interpreter and load the "common" code.
** Create the TH1 interpreter and load the "common" code.
*/
void ticket_init(void){
  const char *zConfig;
  Th_FossilInit();
  Th_FossilInit(TH_INIT_DEFAULT);
  zConfig = ticket_common_code();
  Th_Eval(g.interp, 0, zConfig, -1);
}

/*
** Create the TH1 interpreter and load the "change" code.
*/
int ticket_change(const char *zUuid){
  const char *zConfig;
  Th_FossilInit(TH_INIT_DEFAULT);
  Th_Store("uuid", zUuid);
  zConfig = ticket_change_code();
  return Th_Eval(g.interp, 0, zConfig, -1);
}

/*
** An authorizer function for the SQL used to initialize the
** schema for the ticketing system.  Only allow
**
**     CREATE TABLE
**     CREATE INDEX
**     CREATE VIEW
**     DROP INDEX
**     DROP VIEW
**
** And for objects in "main" or "repository" whose names
** begin with "ticket" or "fx_".  Also allow
**
**     INSERT
**     UPDATE
**     DELETE
**
** But only for tables in "main" or "repository" whose names
** begin with "ticket", "sqlite_", or "fx_".
**
** Of particular importance for security is that this routine
** disallows data changes on the "config" table, as that could
** allow a malicious server to modify settings in such a way as
** to cause a remote code execution.
**
** Use the "fossil test-db-prepare --auth-ticket SQL" command to perform
** manual testing of this authorizer.
*/
static int ticket_schema_auth(
  void *pNErr,
  int eCode,
  const char *z0,
  const char *z1,
  const char *z2,
  const char *z3
){
  switch( eCode ){
    case SQLITE_DROP_VIEW:
    case SQLITE_CREATE_VIEW:
    case SQLITE_CREATE_TABLE: {
      if( sqlite3_stricmp(z2,"main")!=0
       && sqlite3_stricmp(z2,"repository")!=0
      ){
        goto ticket_schema_error;
      }
      if( sqlite3_strnicmp(z0,"ticket",6)!=0
       && sqlite3_strnicmp(z0,"fx_",3)!=0
      ){
        goto ticket_schema_error;
      }
      break;
    }
    case SQLITE_DROP_INDEX:
    case SQLITE_CREATE_INDEX: {
      if( sqlite3_stricmp(z2,"main")!=0
       && sqlite3_stricmp(z2,"repository")!=0
      ){
        goto ticket_schema_error;
      }
      if( sqlite3_strnicmp(z1,"ticket",6)!=0
       && sqlite3_strnicmp(z0,"fx_",3)!=0
      ){
        goto ticket_schema_error;
      }
      break;
    }
    case SQLITE_INSERT:
    case SQLITE_UPDATE:
    case SQLITE_DELETE: {
      if( sqlite3_stricmp(z2,"main")!=0
       && sqlite3_stricmp(z2,"repository")!=0
      ){
        goto ticket_schema_error;
      }
      if( sqlite3_strnicmp(z0,"ticket",6)!=0
       && sqlite3_strnicmp(z0,"sqlite_",7)!=0
       && sqlite3_strnicmp(z0,"fx_",3)!=0
      ){
        goto ticket_schema_error;
      }
      break;
    }
    case SQLITE_SELECT:
    case SQLITE_FUNCTION:
    case SQLITE_REINDEX:
    case SQLITE_TRANSACTION:
    case SQLITE_READ: {
      break;
    }
    default: {
      goto ticket_schema_error;
    }
  }
  return SQLITE_OK;

ticket_schema_error:
  if( pNErr ) *(int*)pNErr  = 1;
  return SQLITE_DENY;
}

/*
** Activate the ticket schema authorizer. Must be followed by
** an eventual call to ticket_unrestrict_sql().
*/
void ticket_restrict_sql(int * pNErr){
  db_set_authorizer(ticket_schema_auth,(void*)pNErr,"Ticket-Schema");
}
/*
** Deactivate the ticket schema authorizer.
*/
void ticket_unrestrict_sql(void){
  db_clear_authorizer();
}


/*
** Recreate the ticket table.
** Recreate the TICKET and TICKETCHNG tables.
*/
void ticket_create_table(int separateConnection){
  const char *zSql;
  char *zSql;

  db_multi_exec(
  db_multi_exec("DROP TABLE IF EXISTS ticket;");
    "DROP TABLE IF EXISTS ticket;"
    "DROP TABLE IF EXISTS ticketchng;"
  );
  zSql = ticket_table_schema();
  ticket_restrict_sql(0);
  if( separateConnection ){
    if( db_transaction_nesting_depth() ) db_end_transaction(0);
    db_init_database(g.zRepositoryName, zSql, 0);
  }else{
    db_multi_exec("%s", zSql);
    db_multi_exec("%s", zSql/*safe-for-%s*/);
  }
  ticket_unrestrict_sql();
  fossil_free(zSql);
}

/*
** Repopulate the ticket table
** Repopulate the TICKET and TICKETCHNG tables from scratch using all
** available ticket artifacts.
*/
void ticket_rebuild(void){
  Stmt q;
  ticket_create_table(1);
  db_begin_transaction();
  db_prepare(&q,"SELECT tagname FROM tag WHERE tagname GLOB 'tkt-*'");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    int len;
    zName += 4;
    len = strlen(zName);
    if( len<20 || !validate16(zName, len) ) continue;
    ticket_rebuild_entry(zName);
  }
  db_finalize(&q);
  db_end_transaction(0);
}

/*
** COMMAND: test-ticket-rebuild
**
** Usage: %fossil test-ticket-rebuild TICKETID|all
**
** Rebuild the TICKET and TICKETCHNG tables for the given ticket ID
** or for ALL.
*/
void test_ticket_rebuild(void){
  db_find_and_open_repository(0, 0);
  if( g.argc!=3 ) usage("TICKETID|all");
  if( fossil_strcmp(g.argv[2], "all")==0 ){
    ticket_rebuild();
  }else{
    const char *zUuid;
    zUuid = db_text(0, "SELECT substr(tagname,5) FROM tag"
                       " WHERE tagname GLOB 'tkt-%q*'", g.argv[2]);
    if( zUuid==0 ) fossil_fatal("no such ticket: %s", g.argv[2]);
    ticket_rebuild_entry(zUuid);
  }
}

/*
** For trouble-shooting purposes, render a dump of the aField[] table to
** the webpage currently under construction.
*/
static void showAllFields(void){
  int i;
  @ <div style="color:blue">
  @ <p>Database fields:</p><ul>
  for(i=0; i<nField; i++){
    @ <li>aField[%d(i)].zName = "%h(aField[i].zName)";
    @ originally = "%h(aField[i].zValue)";
    @ currently = "%h(PD(aField[i].zName,""))";
    if( aField[i].zAppend ){
      @ zAppend = "%h(aField[i].zAppend)";
    }
    @ mUsed = %d(aField[i].mUsed);
  }
  @ </ul></div>
}

/*
** WEBPAGE: tktview
** URL:  tktview?name=UUID
** URL:  tktview/HASH
**
** View a ticket.
** View a ticket identified by the name= query parameter.
** Other query parameters:
**
**      tl               Show a timeline of the ticket above the status
*/
void tktview_page(void){
  const char *zScript;
  char *zFullName;
  const char *zUuid = PD("name","");
  int showTimeline = P("tl")!=0;

  login_check_credentials();
  if( !g.okRdTkt ){ login_needed(); return; }
  if( g.okWrTkt || g.okApndTkt ){
    style_submenu_element("Edit", "Edit The Ticket", "%s/tktedit?name=%T",
  if( !g.perm.RdTkt ){ login_needed(g.anon.RdTkt); return; }
  if( g.anon.WrTkt || g.anon.ApndTkt ){
    style_submenu_element("Edit", "%R/tktedit/%T", PD("name",""));
        g.zTop, PD("name",""));
  }
  if( g.okHistory ){
    style_submenu_element("History", "History Of This Ticket", 
        "%s/tkthistory/%T", g.zTop, zUuid);
  if( g.perm.Hyperlink ){
    style_submenu_element("History", "%R/tkthistory/%T", zUuid);
    if( g.perm.Read ){
    style_submenu_element("Timeline", "Timeline Of This Ticket", 
        "%s/tkttimeline/%T", g.zTop, zUuid);
    style_submenu_element("Check-ins", "Check-ins Of This Ticket", 
      style_submenu_element("Check-ins", "%R/tkttimeline/%T?y=ci", zUuid);
        "%s/tkttimeline/%T?y=ci", g.zTop, zUuid);
  }
  if( g.okNewTkt ){
    style_submenu_element("New Ticket", "Create a new ticket",
    }
  }
  if( g.anon.NewTkt ){
    style_submenu_element("New Ticket", "%R/tktnew");
        "%s/tktnew", g.zTop);
  }
  if( g.okApndTkt && g.okAttach ){
    style_submenu_element("Attach", "Add An Attachment",
  if( g.anon.ApndTkt && g.anon.Attach ){
    style_submenu_element("Attach", "%R/attachadd?tkt=%T&from=%R/tktview/%t",
        "%s/attachadd?tkt=%T&from=%s/tktview%%3fname=%t",
        g.zTop, zUuid, g.zTop, zUuid);
        zUuid, zUuid);
  }
  if( P("plaintext") ){
    style_submenu_element("Formatted", "%R/tktview/%s", zUuid);
  }else{
    style_submenu_element("Plaintext", "%R/tktview/%s?plaintext", zUuid);
  }
  style_set_current_feature("tkt");
  style_header("View Ticket");
  if( showTimeline ){
    int tagid = db_int(0,"SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",
                       zUuid);
    if( tagid ){
      tkt_draw_timeline(tagid, "a");
      @ <hr>
    }else{
      showTimeline = 0;
    }
  }
  if( !showTimeline && g.perm.Hyperlink ){
    style_submenu_element("Timeline", "%R/info/%T", zUuid);
  }
  if( g.thTrace ) Th_Trace("BEGIN_TKTVIEW<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_TKTVIEW<br>\n", -1);
  ticket_init();
  initializeVariablesFromCGI();
  getAllTicketFields();
  initializeVariablesFromDb();
  zScript = ticket_viewpage_code();
  if( P("showfields")!=0 ) showAllFields();
  if( g.thTrace ) Th_Trace("BEGIN_TKTVIEW_SCRIPT<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_TKTVIEW_SCRIPT<br>\n", -1);
  safe_html_context(DOCSRC_TICKET);
  Th_Render(zScript);
  if( g.thTrace ) Th_Trace("END_TKTVIEW<br />\n", -1);
  if( g.thTrace ) Th_Trace("END_TKTVIEW<br>\n", -1);

  zFullName = db_text(0, 
  zFullName = db_text(0,
       "SELECT tkt_uuid FROM ticket"
       " WHERE tkt_uuid GLOB '%q*'", zUuid);
  if( zFullName ){
    int cnt = 0;
    Stmt q;
    db_prepare(&q,
       "SELECT datetime(mtime,'localtime'), filename, user"
       "  FROM attachment"
       " WHERE isLatest AND src!='' AND target=%Q"
       " ORDER BY mtime DESC",
       zFullName);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zDate = db_column_text(&q, 0);
      const char *zFile = db_column_text(&q, 1);
      const char *zUser = db_column_text(&q, 2);
      if( cnt==0 ){
        @ <hr><h2>Attachments:</h2>
    attachment_list(zFullName, "<hr><h2>Attachments:</h2><ul>");
        @ <ul>
      }
  }
      cnt++;
      @ <li><a href="%s(g.zTop)/attachview?tkt=%s(zFullName)&file=%t(zFile)">
      @ %h(zFile)</a> add by %h(zUser) on
      hyperlink_to_date(zDate, ".");
      if( g.okWrTkt && g.okAttach ){
        @ [<a href="%s(g.zTop)/attachdelete?tkt=%s(zFullName)&file=%t(zFile)&from=%s(g.zTop)/tktview%%3fname=%s(zFullName)">delete</a>]
      }

    }
    if( cnt ){
      @ </ul>
    }
    db_finalize(&q);
  }
 
  style_footer();
  style_finish_page();
}

/*
** TH command:   append_field FIELD STRING
** TH1 command: append_field FIELD STRING
**
** FIELD is the name of a database column to which we might want
** to append text.  STRING is the text to be appended to that
** column.  The append does not actually occur until the
** submit_ticket command is run.
*/
static int appendRemarkCmd(
  Th_Interp *interp, 
  void *p, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *p,
  int argc,
  const char **argv,
  int *argl
){
  int idx;

  if( argc!=3 ){
    return Th_WrongNumArgs(interp, "append_field FIELD STRING");
  }
  if( g.thTrace ){
    Th_Trace("append_field %#h {%#h}<br />\n",
    Th_Trace("append_field %#h {%#h}<br>\n",
              argl[1], argv[1], argl[2], argv[2]);
  }
  for(idx=0; idx<nField; idx++){
    if( strncmp(azField[idx], argv[1], argl[1])==0
        && azField[idx][argl[1]]==0 ){
    if( memcmp(aField[idx].zName, argv[1], argl[1])==0
        && aField[idx].zName[argl[1]]==0 ){
      break;
    }
  }
  if( idx>=nField ){
    Th_ErrorMessage(g.interp, "no such TICKET column: ", argv[1], argl[1]);
    return TH_ERROR;
  }
  azAppend[idx] = mprintf("%.*s", argl[2], argv[2]);
  aField[idx].zAppend = mprintf("%.*s", argl[2], argv[2]);
  return TH_OK;
}

/*
** Write a ticket into the repository.
** Upon reassignment of fields try to delta-compress an artifact against
** all artifacts that are referenced in the corresponding zBsln fields.
*/
static int ticket_put(
  Blob *pTicket,           /* The text of the ticket change record */
  const char *zTktId,      /* The ticket to which this change is applied */
  const char *aUsed,       /* Indicators for fields' modifications */
  int needMod              /* True if moderation is needed */
){
  int result;
  int rid;
  manifest_crosslink_begin();
  rid = content_put_ex(pTicket, 0, 0, 0, needMod);
  if( rid==0 ){
    fossil_fatal("trouble committing ticket: %s", g.zErrMsg);
  }
  if( nTicketBslns ){
    int i, s, buf[8], nSrc=0, *aSrc=&(buf[0]);
    if( nTicketBslns > count(buf) ){
      aSrc = (int*)fossil_malloc(sizeof(int)*nTicketBslns);
    }
    for(i=0; i<nField; i++){
      if( aField[i].zBsln && aUsed[i]==JCARD_ASSIGN ){
        s = db_int(0,"SELECT \"%w\" FROM ticket WHERE tkt_uuid = '%q'",
                      aField[i].zBsln, zTktId );
        if( s > 0 ) aSrc[nSrc++] = s;
      }
    }
    if( nSrc ) content_deltify(rid, aSrc, nSrc, 0);
    if( aSrc!=&(buf[0]) ) fossil_free( aSrc );
  }
  if( needMod ){
    moderation_table_create();
    db_multi_exec(
      "INSERT INTO modreq(objid, tktid) VALUES(%d,%Q)",
      rid, zTktId
    );
  }else{
    db_add_unsent(rid);
    db_multi_exec("INSERT OR IGNORE INTO unclustered VALUES(%d);", rid);
  }
  result = (manifest_crosslink(rid, pTicket, MC_NONE)==0);
  assert( blob_is_reset(pTicket) );
  if( !result ){
    result = manifest_crosslink_end(MC_PERMIT_HOOKS);
  }else{
    manifest_crosslink_end(MC_NONE);
  }
  return result;
}

/*
** Subscript command:   submit_ticket
**
** Construct and submit a new ticket artifact.  The fields of the artifact
** are the names of the columns in the TICKET table.  The content is
** taken from TH variables.  If the content is unchanged, the field is
** omitted from the artifact.  Fields whose names begin with "private_"
** are concealed using the db_conceal() function.
*/
static int submitTicketCmd(
  Th_Interp *interp, 
  void *pUuid, 
  int argc, 
  const char **argv, 
  Th_Interp *interp,
  void *pUuid,
  int argc,
  const char **argv,
  int *argl
){
  char *zDate;
  char *zDate, *aUsed;
  const char *zUuid;
  int i;
  int rid;
  int nJ = 0, rc = TH_OK;
  Blob tktchng, cksum;
  int needMod;

  login_verify_csrf_secret();
  if( !cgi_csrf_safe(2) ){
    @ <p class="generalError">Error: Invalid CSRF token.</p>
    return TH_OK;
  }
  if( !captcha_is_correct(0) ){
    @ <p class="generalError">Error: Incorrect security code.</p>
    return TH_OK;
  }
  zUuid = (const char *)pUuid;
  blob_zero(&tktchng);
  zDate = db_text(0, "SELECT datetime('now')");
  zDate = date_in_standard_format("now");
  zDate[10] = 'T';
  blob_appendf(&tktchng, "D %s\n", zDate);
  free(zDate);
  aUsed = fossil_malloc_zero( nField );
  for(i=0; i<nField; i++){
    if( aField[i].zAppend ){
      blob_appendf(&tktchng, "J +%s %z\n", aField[i].zName,
                   fossilize(aField[i].zAppend, -1));
      ++nJ;
      aUsed[i] = JCARD_APPEND;
    }
  }
  for(i=0; i<nField; i++){
    const char *zValue;
    int nValue;
    if( azAppend[i] ){
    if( aField[i].zAppend ) continue;
      blob_appendf(&tktchng, "J +%s %z\n", azField[i],
                   fossilize(azAppend[i], -1));
    }else{
      zValue = Th_Fetch(azField[i], &nValue);
      if( zValue ){
        while( nValue>0 && isspace(zValue[nValue-1]) ){ nValue--; }
        if( strncmp(zValue, azValue[i], nValue) || strlen(azValue[i])!=nValue ){
          if( strncmp(azField[i], "private_", 8)==0 ){
            zValue = db_conceal(zValue, nValue);
            blob_appendf(&tktchng, "J %s %s\n", azField[i], zValue);
          }else{
            blob_appendf(&tktchng, "J %s %#F\n", azField[i], nValue, zValue);
          }
        }
      }
    }
    zValue = Th_Fetch(aField[i].zName, &nValue);
    if( zValue ){
      while( nValue>0 && fossil_isspace(zValue[nValue-1]) ){ nValue--; }
      if( ((aField[i].mUsed & USEDBY_TICKETCHNG)!=0 && nValue>0)
       || memcmp(zValue, aField[i].zValue, nValue)!=0
       ||(int)strlen(aField[i].zValue)!=nValue
      ){
        if( memcmp(aField[i].zName, "private_", 8)==0 ){
          zValue = db_conceal(zValue, nValue);
          blob_appendf(&tktchng, "J %s %s\n", aField[i].zName, zValue);
          aUsed[i] = JCARD_PRIVATE;
        }else{
          blob_appendf(&tktchng, "J %s %#F\n", aField[i].zName, nValue, zValue);
          aUsed[i] = JCARD_ASSIGN;
        }
        nJ++;
      }
    }
  }
  }
  if( *(char**)pUuid ){
    zUuid = db_text(0, 
       "SELECT tkt_uuid FROM ticket WHERE tkt_uuid GLOB '%s*'", P("name")
    zUuid = db_text(0,
       "SELECT tkt_uuid FROM ticket WHERE tkt_uuid GLOB '%q*'", P("name")
    );
  }else{
    zUuid = db_text(0, "SELECT lower(hex(randomblob(20)))");
  }
  *(const char**)pUuid = zUuid;
  blob_appendf(&tktchng, "K %s\n", zUuid);
  blob_appendf(&tktchng, "U %F\n", g.zLogin ? g.zLogin : "");
  blob_appendf(&tktchng, "U %F\n", login_name());
  md5sum_blob(&tktchng, &cksum);
  blob_appendf(&tktchng, "Z %b\n", &cksum);
  if( nJ==0 ){
    blob_reset(&tktchng);
    goto finish;
  }
  needMod = ticket_need_moderation(0);
  if( g.zPath[0]=='d' ){
    const char *zNeedMod = needMod ? "required" : "skipped";
    /* If called from /debug_tktnew or /debug_tktedit... */
    @ <div style="color:blue">
    @ <p>Ticket artifact that would have been submitted:</p>
    @ <blockquote><pre>%h(blob_str(&tktchng))</pre></blockquote>
    @ <blockquote><pre>Moderation would be %h(zNeedMod).</pre></blockquote>
    @ </div>
    @ <hr>
  }else{
  if( g.thTrace ){
    Th_Trace("submit_ticket {\n<blockquote><pre>\n%h\n</pre></blockquote>\n"
             "}<br />\n",
       blob_str(&tktchng));
    if( g.thTrace ){
      Th_Trace("submit_ticket {\n<blockquote><pre>\n%h\n</pre></blockquote>\n"
               "}<br>\n",
         blob_str(&tktchng));
  }else{
    rid = content_put(&tktchng, 0, 0);
    if( rid==0 ){
      fossil_panic("trouble committing ticket: %s", g.zErrMsg);
    }
    manifest_crosslink_begin();
    manifest_crosslink(rid, &tktchng);
    ticket_put(&tktchng, zUuid, aUsed, needMod);
    manifest_crosslink_end();
    rc = ticket_change(zUuid);
  }
  finish:
    fossil_free( aUsed );
  return TH_RETURN;
    return rc;
}


/*
** WEBPAGE: tktnew
** WEBPAGE: debug_tktnew
**
** Enter a new ticket.  the tktnew_template script in the ticket
** Enter a new ticket.  The tktnew_template script in the ticket
** configuration is used.  The /tktnew page is the official ticket
** entry page.  The /debug_tktnew page is used for debugging the
** tktnew_template in the ticket configuration.  /debug_tktnew works
** just like /tktnew except that it does not really save the new ticket
** when you press submit - it just prints the ticket artifact at the
** top of the screen.
*/
void tktnew_page(void){
  const char *zScript;
  char *zNewUuid = 0;
  int uid;

  login_check_credentials();
  if( !g.okNewTkt ){ login_needed(); return; }
  if( !g.perm.NewTkt ){ login_needed(g.anon.NewTkt); return; }
  if( P("cancel") ){
    cgi_redirect("home");
  }
  style_set_current_feature("tkt");
  style_header("New Ticket");
  ticket_standard_submenu(T_ALL_BUT(T_NEW));
  if( g.thTrace ) Th_Trace("BEGIN_TKTNEW<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_TKTNEW<br>\n", -1);
  ticket_init();
  initializeVariablesFromCGI();
  getAllTicketFields();
  initializeVariablesFromDb();
  initializeVariablesFromCGI();
  @ <form method="POST" action="%s(g.zBaseURL)/%s(g.zPath)">
  login_insert_csrf_secret();
  if( g.zPath[0]=='d' ) showAllFields();
  form_begin(0, "%R/%s", g.zPath);
  if( P("date_override") && g.perm.Setup ){
    @ <input type="hidden" name="date_override" value="%h(P("date_override"))">
  }
  zScript = ticket_newpage_code();
  if( g.zLogin && g.zLogin[0] ){
    int nEmail = 0;
    (void)Th_MaybeGetVar(g.interp, "private_contact", &nEmail);
    uid = nEmail>0
      ? 0 : db_int(0, "SELECT uid FROM user WHERE login=%Q", g.zLogin);
    if( uid ){
      char * zEmail =
        db_text(0, "SELECT find_emailaddr(info) FROM user WHERE uid=%d",
                uid);
      if( zEmail ){
        Th_Store("private_contact", zEmail);
        fossil_free(zEmail);
      }
    }
  }
  Th_Store("login", g.zLogin);
  Th_Store("login", login_name());
  Th_Store("date", db_text(0, "SELECT datetime('now')"));
  Th_CreateCommand(g.interp, "submit_ticket", submitTicketCmd,
                   (void*)&zNewUuid, 0);
  if( g.thTrace ) Th_Trace("BEGIN_TKTNEW_SCRIPT<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_TKTNEW_SCRIPT<br>\n", -1);
  if( Th_Render(zScript)==TH_RETURN && !g.thTrace && zNewUuid ){
    cgi_redirect(mprintf("%s/tktview/%s", g.zBaseURL, zNewUuid));
    cgi_redirect(mprintf("%R/tktview/%s", zNewUuid));
    return;
  }
  captcha_generate(0);
  @ </form>
  if( g.thTrace ) Th_Trace("END_TKTVIEW<br />\n", -1);
  style_footer();
  if( g.thTrace ) Th_Trace("END_TKTVIEW<br>\n", -1);
  style_finish_page();
}

/*
** WEBPAGE: tktedit
** WEBPAGE: debug_tktedit
**
** Edit a ticket.  The ticket is identified by the name CGI parameter.
** /tktedit is the official page.  The /debug_tktedit page does the same
** thing except that it does not save the ticket change record when you
** press submit - it instead prints the ticket change record at the top
** of the page.  The /debug_tktedit page is intended to be used when
** debugging ticket configurations.
*/
void tktedit_page(void){
  const char *zScript;
  int nName;
  const char *zName;
  int nRec;

  login_check_credentials();
  if( !g.okApndTkt && !g.okWrTkt ){ login_needed(); return; }
  if( !g.perm.ApndTkt && !g.perm.WrTkt ){
    login_needed(g.anon.ApndTkt || g.anon.WrTkt);
    return;
  }
  zName = P("name");
  if( P("cancel") ){
    cgi_redirectf("tktview?name=%T", zName);
    cgi_redirectf("tktview/%T", zName);
  }
  style_set_current_feature("tkt");
  style_header("Edit Ticket");
  if( zName==0 || (nName = strlen(zName))<4 || nName>UUID_SIZE
  if( zName==0 || (nName = strlen(zName))<4 || nName>HNAME_LEN_SHA1
          || !validate16(zName,nName) ){
    @ <font color="red"><b>Not a valid ticket id: \"%h(zName)\"</b></font>
    style_footer();
    @ <span class="tktError">Not a valid ticket id: "%h(zName)"</span>
    style_finish_page();
    return;
  }
  nRec = db_int(0, "SELECT count(*) FROM ticket WHERE tkt_uuid GLOB '%q*'",
                zName);
  if( nRec==0 ){
    @ <font color="red"><b>No such ticket: \"%h(zName)\"</b></font>
    style_footer();
    @ <span class="tktError">No such ticket: "%h(zName)"</span>
    style_finish_page();
    return;
  }
  if( nRec>1 ){
    @ <font color="red"><b>%d(nRec) tickets begin with: \"%h(zName)\"</b></font>
    style_footer();
    @ <span class="tktError">%d(nRec) tickets begin with:
    @ "%h(zName)"</span>
    style_finish_page();
    return;
  }
  if( g.thTrace ) Th_Trace("BEGIN_TKTEDIT<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_TKTEDIT<br>\n", -1);
  ticket_init();
  getAllTicketFields();
  initializeVariablesFromCGI();
  initializeVariablesFromDb();
  if( g.zPath[0]=='d' ) showAllFields();
  @ <form method="POST" action="%s(g.zBaseURL)/%s(g.zPath)">
  form_begin(0, "%R/%s", g.zPath);
  @ <input type="hidden" name="name" value="%s(zName)">
  login_insert_csrf_secret();
  zScript = ticket_editpage_code();
  Th_Store("login", g.zLogin);
  Th_Store("login", login_name());
  Th_Store("date", db_text(0, "SELECT datetime('now')"));
  Th_CreateCommand(g.interp, "append_field", appendRemarkCmd, 0, 0);
  Th_CreateCommand(g.interp, "submit_ticket", submitTicketCmd, (void*)&zName,0);
  if( g.thTrace ) Th_Trace("BEGIN_TKTEDIT_SCRIPT<br />\n", -1);
  if( g.thTrace ) Th_Trace("BEGIN_TKTEDIT_SCRIPT<br>\n", -1);
  if( Th_Render(zScript)==TH_RETURN && !g.thTrace && zName ){
    cgi_redirect(mprintf("%s/tktview/%s", g.zBaseURL, zName));
    cgi_redirect(mprintf("%R/tktview/%s", zName));
    return;
  }
  captcha_generate(0);
  @ </form>
  if( g.thTrace ) Th_Trace("BEGIN_TKTEDIT<br />\n", -1);
  style_footer();
  if( g.thTrace ) Th_Trace("BEGIN_TKTEDIT<br>\n", -1);
  style_finish_page();
}

/*
** Check the ticket table schema in zSchema to see if it appears to
** be well-formed.  If everything is OK, return NULL.  If something is
** amiss, then return a pointer to a string (obtained from malloc) that
** describes the problem.
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    rc = sqlite3_exec(db, zSchema, 0, 0, &zErr);
    if( rc!=SQLITE_OK ){
      sqlite3_close(db);
      return zErr;
    }
    rc = sqlite3_exec(db, "SELECT tkt_id, tkt_uuid, tkt_mtime FROM ticket",
                      0, 0, 0);
    if( rc!=SQLITE_OK ){
      zErr = mprintf("schema fails to define valid a TICKET "
                     "table containing all required fields");
    }else{
    sqlite3_close(db);
    if( rc!=SQLITE_OK ){
      zErr = mprintf("schema fails to define a valid ticket table "
                     "containing all required fields");
      rc = sqlite3_exec(db, "SELECT tkt_id, tkt_mtime FROM ticketchng", 0,0,0);
      if( rc!=SQLITE_OK ){
        zErr = mprintf("schema fails to define valid a TICKETCHNG "
                       "table containing all required fields");
      return zErr;
    }
  }
  return 0;
      }
    }
    sqlite3_close(db);
  }
  return zErr;
}

/*
** WEBPAGE: tkttimeline
** URL: /tkttimeline?name=TICKETUUID&y=TYPE
** Draw a timeline for a ticket with tag.tagid given by the tagid
** parameter.
**
** If zType[0]=='c' then only show check-ins associated with the
** ticket.  For any other value of zType, show all events associated
** Show the change history for a single ticket in timeline format.
** with the ticket.
*/
void tkttimeline_page(void){
void tkt_draw_timeline(int tagid, const char *zType){
  Stmt q;
  char *zTitle;
  char *zFullUuid;
  char *zSQL;
  const char *zUuid;
  char *zFullUuid;
  int tagid;
  char zGlobPattern[50];
  const char *zType;

  login_check_credentials();
  if( !g.okHistory || !g.okRdTkt ){ login_needed(); return; }
  zUuid = PD("name","");
  zType = PD("y","a");
  if( zType[0]!='c' ){
    style_submenu_element("Check-ins", "Check-ins",
       "%s/tkttimeline?name=%T&y=ci", g.zTop, zUuid);
  }else{
    style_submenu_element("Timeline", "Timeline",
       "%s/tkttimeline?name=%T", g.zTop, zUuid);
  }
  style_submenu_element("History", "History",
    "%s/tkthistory/%s", g.zTop, zUuid);
  style_submenu_element("Status", "Status",
    "%s/info/%s", g.zTop, zUuid);
  if( zType[0]=='c' ){
    zTitle = mprintf("Check-Ins Associated With Ticket %h", zUuid);
  }else{
    zTitle = mprintf("Timeline Of Ticket %h", zUuid);
  }
  style_header(zTitle);
  free(zTitle);

  sqlite3_snprintf(6, zGlobPattern, "%s", zUuid);
  canonical16(zGlobPattern, strlen(zGlobPattern));
  tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",zUuid);
  if( tagid==0 ){
    @ No such ticket: %h(zUuid)
    style_footer();
    return;
  }
  zFullUuid = db_text(0, "SELECT substr(tagname, 5) FROM tag WHERE tagid=%d",
                         tagid);
  if( zType[0]=='c' ){
    zSQL = mprintf(
         "%s AND event.objid IN "
         "   (SELECT srcid FROM backlink WHERE target GLOB '%.4s*' "
         " (SELECT srcid FROM backlink WHERE target GLOB '%.4s*' "
                                         "AND srctype=0 "
                                         "AND '%s' GLOB (target||'*')) "
         "ORDER BY mtime DESC",
         timeline_query_for_www(), zFullUuid, zFullUuid
    );
  }else{
    zSQL = mprintf(
         "%s AND event.objid IN "
         "  (SELECT rid FROM tagxref WHERE tagid=%d"
         "   UNION SELECT srcid FROM backlink"
         "   UNION"
         "   SELECT CASE srctype WHEN 2 THEN"
                 " (SELECT rid FROM tagxref WHERE tagid=backlink.srcid"
                 " ORDER BY mtime DESC LIMIT 1)"
                 " ELSE srcid END"
         "     FROM backlink"
                  " WHERE target GLOB '%.4s*'"
                  "   AND '%s' GLOB (target||'*')"
         "   UNION SELECT attachid FROM attachment"
                  " WHERE target=%Q) "
         "ORDER BY mtime DESC",
         timeline_query_for_www(), tagid, zFullUuid, zFullUuid, zFullUuid
    );
  }
  db_prepare(&q, zSQL);
  db_prepare(&q, "%z", zSQL/*safe-for-%s*/);
  free(zSQL);
  www_print_timeline(&q, TIMELINE_ARTID, 0);
  www_print_timeline(&q,
    TIMELINE_ARTID | TIMELINE_DISJOINT | TIMELINE_GRAPH | TIMELINE_NOTKT |
    TIMELINE_REFS,
    0, 0, 0, 0, 0, 0);
  db_finalize(&q);
  fossil_free(zFullUuid);
}

/*
** WEBPAGE: tkttimeline
** URL: /tkttimeline/TICKETUUID
**
** Show the change history for a single ticket in timeline format.
**
** Query parameters:
**
**     y=ci          Show only check-ins associated with the ticket
*/
void tkttimeline_page(void){
  char *zTitle;
  const char *zUuid;
  int tagid;
  char zGlobPattern[50];
  const char *zType;

  login_check_credentials();
  if( !g.perm.Hyperlink || !g.perm.RdTkt ){
    login_needed(g.anon.Hyperlink && g.anon.RdTkt);
    return;
  }
  zUuid = PD("name","");
  zType = PD("y","a");
  if( zType[0]!='c' ){
    if( g.perm.Read ){
      style_submenu_element("Check-ins", "%R/tkttimeline/%T?y=ci", zUuid);
    }
  }else{
    style_submenu_element("Timeline", "%R/tkttimeline/%T", zUuid);
  }
  style_submenu_element("History", "%R/tkthistory/%s", zUuid);
  style_submenu_element("Status", "%R/info/%s", zUuid);
  if( zType[0]=='c' ){
    zTitle = mprintf("Check-ins Associated With Ticket %h", zUuid);
  }else{
    zTitle = mprintf("Timeline Of Ticket %h", zUuid);
  }
  style_set_current_feature("tkt");
  style_header("%z", zTitle);

  sqlite3_snprintf(6, zGlobPattern, "%s", zUuid);
  canonical16(zGlobPattern, strlen(zGlobPattern));
  tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",zUuid);
  if( tagid==0 ){
    @ No such ticket: %h(zUuid)
  style_footer();
}

    style_finish_page();
    return;
  }
  tkt_draw_timeline(tagid, zType);
  style_finish_page();
}

/*
** WEBPAGE: tkthistory
** URL: /tkthistory?name=TICKETUUID
** URL: /tkthistory/TICKETUUID
**
** Show the complete change history for a single ticket
** Show the complete change history for a single ticket.  Or (to put it
** another way) show a list of artifacts associated with a single ticket.
**
** By default, the artifacts are decoded and formatted.  Text fields
** are formatted as text/plain, since in the general case Fossil does
** not have knowledge of the encoding.  If the "raw" query parameter
** is present, then the undecoded and unformatted text of each artifact
** is displayed.
**
** Reassignments of a field of the TICKET table that has a corresponding
** "baseline for ..." companion are rendered as unified diffs.
*/
void tkthistory_page(void){
  Stmt q;
  char *zTitle;
  const char *zUuid;
  int tagid;
  int nChng = 0;
  Blob *aLastVal = 0; /* holds the last rendered value for each field */

  login_check_credentials();
  if( !g.perm.Hyperlink || !g.perm.RdTkt ){
  if( !g.okHistory || !g.okRdTkt ){ login_needed(); return; }
    login_needed(g.anon.Hyperlink && g.anon.RdTkt);
    return;
  }
  zUuid = PD("name","");
  zTitle = mprintf("History Of Ticket %h", zUuid);
  style_submenu_element("Status", "Status",
    "%s/info/%s", g.zTop, zUuid);
  style_submenu_element("Check-ins", "Check-ins",
  style_submenu_element("Status", "%R/info/%s", zUuid);
  if( g.perm.Read ){
    style_submenu_element("Check-ins", "%R/tkttimeline/%s?y=ci", zUuid);
    "%s/tkttimeline?name=%s?y=ci", g.zTop, zUuid);
  style_submenu_element("Timeline", "Timeline",
    "%s/tkttimeline?name=%s", g.zTop, zUuid);
  style_header(zTitle);
  }
  style_submenu_element("Timeline", "%R/tkttimeline/%s", zUuid);
  if( P("raw")!=0 ){
    style_submenu_element("Decoded", "%R/tkthistory/%s", zUuid);
  }else if( g.perm.Admin ){
    style_submenu_element("Raw", "%R/tkthistory/%s?raw", zUuid);
  }
  style_set_current_feature("tkt");
  style_header("%z", zTitle);
  free(zTitle);

  tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",zUuid);
  if( tagid==0 ){
    @ No such ticket: %h(zUuid)
    style_footer();
    style_finish_page();
    return;
  }
  if( P("raw")!=0 ){
    @ <h2>Raw Artifacts Associated With Ticket %h(zUuid)</h2>
  }else{
    @ <h2>Artifacts Associated With Ticket %h(zUuid)</h2>
    getAllTicketFields();
    if( nTicketBslns ){
      aLastVal = blobarray_new(nField);
    }
  }
  db_prepare(&q,
    "SELECT datetime(mtime,'localtime'), objid, uuid, NULL, NULL, NULL"
    "SELECT datetime(mtime,toLocal()), objid, uuid, NULL, NULL, NULL"
    "  FROM event, blob"
    " WHERE objid IN (SELECT rid FROM tagxref WHERE tagid=%d)"
    "   AND blob.rid=event.objid"
    " UNION "
    "SELECT datetime(mtime,'localtime'), attachid, uuid, src, filename, user"
    "SELECT datetime(mtime,toLocal()), attachid, uuid, src, filename, user"
    "  FROM attachment, blob"
    " WHERE target=(SELECT substr(tagname,5) FROM tag WHERE tagid=%d)"
    "   AND blob.rid=attachid"
    " ORDER BY 1 DESC",
    " ORDER BY 1",
    tagid, tagid
  );
  while( db_step(&q)==SQLITE_ROW ){
  for(nChng=0; db_step(&q)==SQLITE_ROW; nChng++){
    Blob content;
    Manifest m;
    Manifest *pTicket;
    char zShort[12];
    const char *zDate = db_column_text(&q, 0);
    int rid = db_column_int(&q, 1);
    const char *zChngUuid = db_column_text(&q, 2);
    const char *zFile = db_column_text(&q, 4);
    memcpy(zShort, zChngUuid, 10);
    zShort[10] = 0;
    if( nChng==0 ){
      @ <ol class="tkt-changes">
    }
    if( zFile!=0 ){
      const char *zSrc = db_column_text(&q, 3);
      const char *zUser = db_column_text(&q, 5);
      if( zSrc==0 || zSrc[0]==0 ){
        @ 
        @ <p>Delete attachment "%h(zFile)"
      @
      @ <li id="%S(zChngUuid)"><p><span>
      if( zSrc==0 || zSrc[0]==0 ){
        @ Delete attachment "%h(zFile)"
      }else{
        @ 
        @ <p>Add attachment "%h(zFile)"
        @ Add attachment
        @ "%z(href("%R/artifact/%!S",zSrc))%s(zFile)</a>"
      }
      @ [<a href="%s(g.zTop)/artifact/%T(zChngUuid)">%s(zShort)</a>]
      @ [%z(href("%R/artifact/%!S",zChngUuid))%S(zChngUuid)</a>]</span>
      @ (rid %d(rid)) by
      hyperlink_to_user(zUser,zDate," on");
      hyperlink_to_date(zDate, ".</p>");
    }else{
      content_get(rid, &content);
      if( manifest_parse(&m, &content) && m.type==CFTYPE_TICKET ){
      pTicket = manifest_get(rid, CFTYPE_TICKET, 0);
      if( pTicket ){
        @
        @ <p>Ticket change
        @ [<a href="%s(g.zTop)/artifact/%T(zChngUuid)">%s(zShort)</a>]
        @ <li id="%S(zChngUuid)"><p><span>Ticket change
        @ [%z(href("%R/artifact/%!S",zChngUuid))%S(zChngUuid)</a>]</span>
        @ (rid %d(rid)) by
        hyperlink_to_user(m.zUser,zDate," on");
        hyperlink_to_user(pTicket->zUser,zDate," on");
        hyperlink_to_date(zDate, ":");
        ticket_output_change_artifact(&m);
        @ </p>
        if( P("raw")!=0 ){
          Blob c;
          content_get(rid, &c);
          @ <blockquote><pre>
          @ %h(blob_str(&c))
          @ </pre></blockquote>
          blob_reset(&c);
        }else{
          ticket_output_change_artifact(pTicket, "a", nChng, aLastVal);
      }
      manifest_clear(&m);
        }
      }
      manifest_destroy(pTicket);
    }
    @ </li>
  }
  db_finalize(&q);
  if( nChng ){
    @ </ol>
  }
  style_footer();
  style_finish_page();
  if( aLastVal ) blobarray_delete(aLastVal, nField);
}

/*
** Return TRUE if the given BLOB contains a newline character.
*/
static int contains_newline(Blob *p){
  const char *z = blob_str(p);
  while( *z ){
    if( *z=='\n' ) return 1;
    z++;
  }
  return 0;
}

/*
** The pTkt object is a ticket change artifact.  Output a detailed
** description of this object.
**
** If `aLastVal` is not NULL then render selected fields as unified diffs
** and update corresponding elements of that array with values from `pTkt`.
*/
void ticket_output_change_artifact(Manifest *pTkt){
void ticket_output_change_artifact(
  Manifest *pTkt,           /* Parsed artifact for the ticket change */
  const char *zListType,    /* Which type of list */
  int n,                    /* Which ticket change is this */
  Blob *aLastVal            /* Array of the latest values for the diffs */
){
  int i;
  if( zListType==0 ) zListType = "1";
  getAllTicketFields();
  @ <ol>
  @ <ol type="%s(zListType)">
  for(i=0; i<pTkt->nField; i++){
    Blob val;
    const char *z;
    z = pTkt->aField[i].zName;
    blob_set(&val, pTkt->aField[i].zValue);
    if( z[0]=='+' ){
      @ <li>Appended to %h(&z[1]):<blockquote>
      wiki_convert(&val, 0, 0);
      @ </blockquote></li>
    }else if( blob_size(&val)<=50 && contains_newline(&val) ){
      @ <li>Change %h(z) to:<blockquote>
      wiki_convert(&val, 0, 0);
      @ </blockquote></li>
    }else{
      @ <li>Change %h(z) to "%h(blob_str(&val))"</li>
    }
    blob_reset(&val);
    const char *z  = pTkt->aField[i].zName;
    const char *zX = z[0]=='+' ? z+1 : z;
    const int id = fieldId(zX);
    const char  *zValue = pTkt->aField[i].zValue;
    const size_t nValue = strlen(zValue);
    const int bLong = nValue>50 || memchr(zValue,'\n',nValue)!=NULL;
                      /* zValue is long enough to justify a <blockquote> */
    const int bCanDiff = aLastVal && id>=0 && aField[id].zBsln;
                      /* preliminary flag for rendering via unified diff */
    int bAppend = 0;  /* zValue is being appended to a TICKET's field */
    int bRegular = 0; /* prev value of a TICKET's field is being superseded*/
    @ <li>\
    if( id<0 ){
      @ Untracked field %h(zX):
    }else if( aField[id].mUsed==USEDBY_TICKETCHNG ){
      @ %h(zX):
    }else if( n==0 ){
      @ %h(zX) initialized to:
    }else if( z[0]=='+' && (aField[id].mUsed&USEDBY_TICKET)!=0 ){
      @ Appended to %h(zX):
      bAppend = 1;
    }else{
      if( !bCanDiff ){
        @ %h(zX) changed to: \
      }
      bRegular = 1;
    }
    if( bCanDiff ){
      Blob *prev = aLastVal+id;
      Blob val = BLOB_INITIALIZER;
      if( nValue ){
        blob_init(&val, zValue, nValue+1);
        val.nUsed--;  /* makes blob_str() faster */
      }
      if( bRegular && nValue && blob_buffer(prev) && blob_size(prev) ){
        Blob d = BLOB_INITIALIZER;
        DiffConfig DCfg;
        construct_diff_flags(1, &DCfg);
        DCfg.diffFlags |= DIFF_HTML | DIFF_LINENO;
        text_diff(prev, &val, &d, &DCfg);
        @ %h(zX) changed as:
        @ %s(blob_str(&d))
        @ </li>
        blob_reset(&d);
      }else{
        if( bRegular ){
          @ %h(zX) changed to:
        }
        if( bLong ){
          @ <blockquote><pre class='verbatim'>
          @ %h(zValue)
          @ </pre></blockquote></li>
        }else{
          @ "%h(zValue)"</li>
        }
      }
      if( blob_buffer(prev) && blob_size(prev) && !bAppend ){
        blob_truncate(prev,0);
      }
      if( nValue ) blob_appendb(prev, &val);
      blob_reset(&val);
    }else{
      if( bLong ){
        @ <blockquote><pre class='verbatim'>
        @ %h(zValue)
        @ </pre></blockquote></li>
      }else{
        @ "%h(zValue)"</li>
      }
    }
  }
  @ </ol>
}

/*
** COMMAND: ticket*
**
** Usage: %fossil ticket SUBCOMMAND ...
**
** Run various subcommands to control tickets
**
** > fossil ticket show (REPORTTITLE|REPORTNR) ?TICKETFILTER? ?OPTIONS?
**
**     Options:
**       -l|--limit LIMITCHAR
**       -q|--quote
**       -R|--repository REPO
**
**     Run the ticket report, identified by the report format title
**     used in the GUI. The data is written as flat file on stdout,
**     using TAB as separator. The separator can be changed using
**     the -l or --limit option.
**
**     If TICKETFILTER is given on the commandline, the query is
**     limited with a new WHERE-condition.
**       example:  Report lists a column # with the uuid
**                 TICKETFILTER may be [#]='uuuuuuuuu'
**       example:  Report only lists rows with status not open
**                 TICKETFILTER: status != 'open'
**
**     If --quote is used, the tickets are encoded by quoting special
**     chars (space -> \\s, tab -> \\t, newline -> \\n, cr -> \\r,
**     formfeed -> \\f, vtab -> \\v, nul -> \\0, \\ -> \\\\).
**     Otherwise, the simplified encoding as on the show report raw page
**     in the GUI is used. This has no effect in JSON mode.
**
**     Instead of the report title it's possible to use the report
**     number; the special report number 0 lists all columns defined in
**     the ticket table.
**
** > fossil ticket list fields
** > fossil ticket ls fields
**
**     List all fields defined for ticket in the fossil repository.
**
** > fossil ticket list reports
** > fossil ticket ls reports
**
**     List all ticket reports defined in the fossil repository.
**
** > fossil ticket set TICKETUUID (FIELD VALUE)+ ?-q|--quote?
** > fossil ticket change TICKETUUID (FIELD VALUE)+ ?-q|--quote?
**
**     Change ticket identified by TICKETUUID to set the values of
**     each field FIELD to VALUE.
**
**     Field names as defined in the TICKET table.  By default, these
**     names include: type, status, subsystem, priority, severity, foundin,
**     resolution, title, and comment, but other field names can be added
**     or substituted in customized installations.
**
**     If you use +FIELD, the VALUE is appended to the field FIELD.  You
**     can use more than one field/value pair on the commandline.  Using
**     --quote enables the special character decoding as in "ticket
**     show", which allows setting multiline text or text with special
**     characters.
**
** > fossil ticket add FIELD VALUE ?FIELD VALUE .. ? ?-q|--quote?
**
**     Like set, but create a new ticket with the given values.
**
** > fossil ticket history TICKETUUID
**
**     Show the complete change history for the ticket
**
** Note that the values in set|add are not validated against the
** definitions given in "Ticket Common Script".
*/
void ticket_cmd(void){
  int n;
  const char *zUser;
  const char *zDate;
  const char *zTktUuid;

  /* do some ints, we want to be inside a check-out */
  db_find_and_open_repository(0, 0);
  user_select();

  zUser = find_option("user-override",0,1);
  if( zUser==0 ) zUser = login_name();
  zDate = find_option("date-override",0,1);
  if( zDate==0 ) zDate = "now";
  zDate = date_in_standard_format(zDate);
  zTktUuid = find_option("uuid-override",0,1);
  if( zTktUuid && (strlen(zTktUuid)!=40 || !validate16(zTktUuid,40)) ){
    fossil_fatal("invalid --uuid-override: must be 40 characters of hex");
  }

  /*
  ** Check that the user exists.
  */
  if( !db_exists("SELECT 1 FROM user WHERE login=%Q", zUser) ){
    fossil_fatal("no such user: %s", zUser);
  }

  if( g.argc<3 ){
    usage("add|change|list|set|show|history");
  }
  n = strlen(g.argv[2]);
  if( n==1 && g.argv[2][0]=='s' ){
    /* set/show cannot be distinguished, so show the usage */
    usage("add|change|list|set|show|history");
  }
  if(( strncmp(g.argv[2],"list",n)==0 ) || ( strncmp(g.argv[2],"ls",n)==0 )){
    if( g.argc==3 ){
      usage("list fields|reports");
    }else{
      n = strlen(g.argv[3]);
      if( !strncmp(g.argv[3],"fields",n) ){
        /* simply show all field names */
        int i;

        /* read all available ticket fields */
        getAllTicketFields();
        for(i=0; i<nField; i++){
          printf("%s\n",aField[i].zName);
        }
      }else if( !strncmp(g.argv[3],"reports",n) ){
        rpt_list_reports();
      }else{
        fossil_fatal("unknown ticket list option '%s'!",g.argv[3]);
      }
    }
  }else{
    /* add a new ticket or set fields on existing tickets */
    tTktShowEncoding tktEncoding;

    tktEncoding = find_option("quote","q",0) ? tktFossilize : tktNoTab;

    if( strncmp(g.argv[2],"show",n)==0 ){
      if( g.argc==3 ){
        usage("show REPORTNR");
      }else{
        const char *zRep = 0;
        const char *zSep = 0;
        const char *zFilterUuid = 0;
        zSep = find_option("limit","l",1);
        zRep = g.argv[3];
        if( !strcmp(zRep,"0") ){
          zRep = 0;
        }
        if( g.argc>4 ){
          zFilterUuid = g.argv[4];
        }
        rptshow( zRep, zSep, zFilterUuid, tktEncoding );
      }
    }else{
      /* add a new ticket or update an existing ticket */
      enum { set,add,history,err } eCmd = err;
      int i = 0;
      Blob tktchng, cksum;
      char *aUsed;

      /* get command type (set/add) and get uuid, if needed for set */
      if( strncmp(g.argv[2],"set",n)==0 || strncmp(g.argv[2],"change",n)==0 ||
         strncmp(g.argv[2],"history",n)==0 ){
        if( strncmp(g.argv[2],"history",n)==0 ){
          eCmd = history;
        }else{
          eCmd = set;
        }
        if( g.argc==3 ){
          usage("set|change|history TICKETUUID");
        }
        zTktUuid = db_text(0,
          "SELECT tkt_uuid FROM ticket WHERE tkt_uuid GLOB '%q*'", g.argv[3]
        );
        if( !zTktUuid ){
          fossil_fatal("unknown ticket: '%s'!",g.argv[3]);
        }
        i=4;
      }else if( strncmp(g.argv[2],"add",n)==0 ){
        eCmd = add;
        i = 3;
        if( zTktUuid==0 ){
          zTktUuid = db_text(0, "SELECT lower(hex(randomblob(20)))");
        }
      }
      /* none of set/add, so show the usage! */
      if( eCmd==err ){
        usage("add|fieldlist|set|show|history");
      }

      /* we just handle history separately here, does not get out */
      if( eCmd==history ){
        Stmt q;
        int tagid;

        if( i != g.argc ){
          fossil_fatal("no other parameters expected to %s!",g.argv[2]);
        }
        tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname GLOB 'tkt-%q*'",
                       zTktUuid);
        if( tagid==0 ){
          fossil_fatal("no such ticket %h", zTktUuid);
        }
        db_prepare(&q,
          "SELECT datetime(mtime,toLocal()), objid, NULL, NULL, NULL"
          "  FROM event, blob"
          " WHERE objid IN (SELECT rid FROM tagxref WHERE tagid=%d)"
          "   AND blob.rid=event.objid"
          " UNION "
          "SELECT datetime(mtime,toLocal()), attachid, filename, "
          "       src, user"
          "  FROM attachment, blob"
          " WHERE target=(SELECT substr(tagname,5) FROM tag WHERE tagid=%d)"
          "   AND blob.rid=attachid"
          " ORDER BY 1 DESC",
          tagid, tagid
        );
        while( db_step(&q)==SQLITE_ROW ){
          Manifest *pTicket;
          const char *zDate = db_column_text(&q, 0);
          int rid = db_column_int(&q, 1);
          const char *zFile = db_column_text(&q, 2);
          if( zFile!=0 ){
            const char *zSrc = db_column_text(&q, 3);
            const char *zUser = db_column_text(&q, 4);
            if( zSrc==0 || zSrc[0]==0 ){
              fossil_print("Delete attachment %s\n", zFile);
            }else{
              fossil_print("Add attachment %s\n", zFile);
            }
            fossil_print(" by %s on %s\n", zUser, zDate);
          }else{
            pTicket = manifest_get(rid, CFTYPE_TICKET, 0);
            if( pTicket ){
              int i;

              fossil_print("Ticket Change by %s on %s:\n",
                           pTicket->zUser, zDate);
              for(i=0; i<pTicket->nField; i++){
                Blob val;
                const char *z;
                z = pTicket->aField[i].zName;
                blob_set(&val, pTicket->aField[i].zValue);
                if( z[0]=='+' ){
                  fossil_print("  Append to ");
            z++;
          }else{
            fossil_print("  Change ");
          }
          fossil_print("%h: ",z);
          if( blob_size(&val)>50 || contains_newline(&val)) {
                  fossil_print("\n    ");
                  comment_print(blob_str(&val),0,4,-1,get_comment_format());
                }else{
                  fossil_print("%s\n",blob_str(&val));
                }
                blob_reset(&val);
              }
            }
            manifest_destroy(pTicket);
          }
        }
        db_finalize(&q);
        return;
      }
      /* read all given ticket field/value pairs from command line */
      if( i==g.argc ){
        fossil_fatal("empty %s command aborted!",g.argv[2]);
      }
      getAllTicketFields();
      /* read command-line and assign fields in the aField[].zValue array */
      while( i<g.argc ){
        char *zFName;
        char *zFValue;
        int j;
        int append = 0;

        zFName = g.argv[i++];
        if( i==g.argc ){
          fossil_fatal("missing value for '%s'!",zFName);
        }
        zFValue = g.argv[i++];
        if( tktEncoding == tktFossilize ){
          zFValue=mprintf("%s",zFValue);
          defossilize(zFValue);
        }
        append = (zFName[0] == '+');
        if( append ){
          zFName++;
        }
        j = fieldId(zFName);
        if( j == -1 ){
          fossil_fatal("unknown field name '%s'!",zFName);
        }else{
          if( append ){
            aField[j].zAppend = zFValue;
          }else{
            aField[j].zValue = zFValue;
          }
        }
      }
      aUsed = fossil_malloc_zero( nField );

      /* now add the needed artifacts to the repository */
      blob_zero(&tktchng);
      /* add the time to the ticket manifest */
      blob_appendf(&tktchng, "D %s\n", zDate);
      /* append defined elements */
      for(i=0; i<nField; i++){
        char *zValue = 0;
        char *zPfx;

        if( aField[i].zAppend && aField[i].zAppend[0] ){
          zPfx = " +";
          zValue = aField[i].zAppend;
          aUsed[i] = JCARD_APPEND;
        }else if( aField[i].zValue && aField[i].zValue[0] ){
          zPfx = " ";
          zValue = aField[i].zValue;
          aUsed[i] = JCARD_ASSIGN;
        }else{
          continue;
        }
        if( memcmp(aField[i].zName, "private_", 8)==0 ){
          zValue = db_conceal(zValue, strlen(zValue));
          blob_appendf(&tktchng, "J%s%s %s\n", zPfx, aField[i].zName, zValue);
          aUsed[i] = JCARD_PRIVATE;
        }else{
          blob_appendf(&tktchng, "J%s%s %#F\n", zPfx,
                       aField[i].zName, strlen(zValue), zValue);
        }
      }
      blob_appendf(&tktchng, "K %s\n", zTktUuid);
      blob_appendf(&tktchng, "U %F\n", zUser);
      md5sum_blob(&tktchng, &cksum);
      blob_appendf(&tktchng, "Z %b\n", &cksum);
      if( ticket_put(&tktchng, zTktUuid, aUsed,
                      ticket_need_moderation(1) )==0 ){
        fossil_fatal("%s", g.zErrMsg);
      }else{
        fossil_print("ticket %s succeeded for %s\n",
             (eCmd==set?"set":"add"),zTktUuid);
      }
      fossil_free( aUsed );
    }
  }
}


#if INTERFACE
/* Standard submenu items for wiki pages */
#define T_SRCH        0x00001
#define T_REPLIST     0x00002
#define T_NEW         0x00004
#define T_ALL         0x00007
#define T_ALL_BUT(x)  (T_ALL&~(x))
#endif

/*
** Add some standard submenu elements for ticket screens.
*/
void ticket_standard_submenu(unsigned int ok){
  if( (ok & T_SRCH)!=0 && search_restrict(SRCH_TKT)!=0 ){
    style_submenu_element("Search", "%R/tktsrch");
  }
  if( (ok & T_REPLIST)!=0 ){
    style_submenu_element("Reports", "%R/reportlist");
  }
  if( (ok & T_NEW)!=0 && g.anon.NewTkt ){
    style_submenu_element("New", "%R/tktnew");
  }
}

/*
** WEBPAGE: ticket
**
** This is intended to be the primary "Ticket" page.  Render as
** either ticket-search (if search is enabled) or as the
** /reportlist page (if ticket search is disabled).
*/
void tkt_home_page(void){
  login_check_credentials();
  if( search_restrict(SRCH_TKT)!=0 ){
    tkt_srchpage();
  }else{
    view_list();
  }
}

/*
** WEBPAGE: tktsrch
** Usage:  /tktsrch?s=PATTERN
**
** Full-text search of all current tickets
*/
void tkt_srchpage(void){
  char *defaultReport;
  login_check_credentials();
  style_set_current_feature("tkt");
  style_header("Ticket Search");
  ticket_standard_submenu(T_ALL_BUT(T_SRCH));
  if( !search_screen(SRCH_TKT, 0) ){
    defaultReport = db_get("ticket-default-report", 0);
    if( defaultReport ){
      rptview_page_content(defaultReport, 0, 0);
    }
  }
  style_finish_page();
}
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** setup screens.
*/
#include "config.h"
#include "tktsetup.h"
#include <assert.h>

/*
** Main sub-menu for configuring the ticketing system.
** WEBPAGE: tktsetup
** Main sub-menu for configuring the ticketing system.
*/
void tktsetup_page(void){
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_header("Ticket Setup");
  @ <table border="0" cellspacing="20">
  setup_menu_entry("Table", "tktsetup_tab",
    "Specify the schema of the  \"ticket\" table in the database.");
  setup_menu_entry("Timeline", "tktsetup_timeline",
    "How to display ticket status in the timeline");
  setup_menu_entry("Common", "tktsetup_com",
    "Common TH1 code run before all ticket processing.");
  setup_menu_entry("Change", "tktsetup_change",
    "The TH1 code run after a ticket is edited or created.");
  setup_menu_entry("New Ticket Page", "tktsetup_newpage",
    "HTML with embedded TH1 code for the \"new ticket\" webpage.");
  setup_menu_entry("View Ticket Page", "tktsetup_viewpage",
    "HTML with embedded TH1 code for the \"view ticket\" webpage.");
  setup_menu_entry("Edit Ticket Page", "tktsetup_editpage",
    "HTML with embedded TH1 code for the \"edit ticket\" webpage.");
  setup_menu_entry("Report List Page", "tktsetup_reportlist",
    "HTML with embedded TH1 code for the \"report list\" webpage.");
  setup_menu_entry("Report Template", "tktsetup_rpttplt",
    "The default ticket report format.");
  setup_menu_entry("Key Template", "tktsetup_keytplt",
    "The default color key for reports.");
  @ </table>
  style_footer();
  style_finish_page();
}

/*
** NOTE:  When changing the table definition below, also change the
** equivalent definition found in schema.c.
*/
/* @-comment: ** */
static const char zDefaultTicketTable[] =
@ CREATE TABLE ticket(
@   -- Do not change any column that begins with tkt_
@   tkt_id INTEGER PRIMARY KEY,
@   tkt_uuid TEXT UNIQUE,
@   tkt_mtime DATE,
@   tkt_ctime DATE,
@   -- Add as many field as required below this line
@   -- Add as many fields as required below this line
@   type TEXT,
@   status TEXT,
@   subsystem TEXT,
@   priority TEXT,
@   severity TEXT,
@   foundin TEXT,
@   private_contact TEXT,
@   resolution TEXT,
@   title TEXT,
@   comment TEXT
@ );
@ CREATE TABLE ticketchng(
@   -- Do not change any column that begins with tkt_
@   tkt_id INTEGER REFERENCES ticket,
@   tkt_rid INTEGER REFERENCES blob,
@   tkt_mtime DATE,
@   tkt_user TEXT,
@   -- Add as many fields as required below this line
@   login TEXT,
@   username TEXT,
@   mimetype TEXT,
@   icomment TEXT
@ );
@ CREATE INDEX ticketchng_idx1 ON ticketchng(tkt_id, tkt_mtime);
;

/*
** Return the ticket table definition
** Return the ticket table definition in heap-allocated
** memory owned by the caller.
*/
const char *ticket_table_schema(void){
  return db_get("ticket-table", (char*)zDefaultTicketTable);
char *ticket_table_schema(void){
  return db_get("ticket-table", zDefaultTicketTable);
}

/*
** Common implementation for the ticket setup editor pages.
*/
static void tktsetup_generic(
  const char *zTitle,           /* Page title */
  const char *zDbField,         /* Configuration field being edited */
  const char *zDfltValue,       /* Default text value */
  const char *zDesc,            /* Description of this field */
  char *(*xText)(const char*),  /* Validitity test or NULL */
  void (*xRebuild)(void),       /* Run after successulf update */
  char *(*xText)(const char*),  /* Validity test or NULL */
  void (*xRebuild)(void),       /* Run after successful update */
  int height                    /* Height of the edit box */
){
  const char *z;
  int isSubmit;
  

  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  style_set_current_feature("tktsetup");
  if( P("setup") ){
  if( PB("setup") ){
    cgi_redirect("tktsetup");
  }
  isSubmit = P("submit")!=0;
  z = P("x");
  if( z==0 ){
    z = db_get(zDbField, (char*)zDfltValue);
    z = db_get(zDbField, zDfltValue);
  }
  style_set_current_feature("tktsetup");
  style_header("Edit %s", zTitle);
  if( P("clear")!=0 ){
  if( P("clear")!=0 && cgi_csrf_safe(2) ){
    login_verify_csrf_secret();
    db_unset(zDbField, 0);
    db_unset(zDbField/*works-like:"x"*/, 0);
    if( xRebuild ) xRebuild();
    z = zDfltValue;
  }else if( isSubmit ){
    cgi_redirect("tktsetup");
  }else if( isSubmit && cgi_csrf_safe(2) ){
    char *zErr = 0;
    login_verify_csrf_secret();
    if( xText && (zErr = xText(z))!=0 ){
      @ <p><font color="red"><b>ERROR: %h(zErr)</b></font></p>
      @ <p class="tktsetupError">ERROR: %h(zErr)</p>
    }else{
      db_set(zDbField, z, 0);
      db_set(zDbField/*works-like:"x"*/, z, 0);
      if( xRebuild ) xRebuild();
      cgi_redirect("tktsetup");
    }
  }
  @ <form action="%s(g.zBaseURL)/%s(g.zPath)" method="POST">
  @ <form action="%R/%s(g.zPath)" method="post"><div>
  login_insert_csrf_secret();
  @ <p>%s(zDesc)</p>
  @ <textarea name="x" rows="%d(height)" cols="80">%h(z)</textarea>
  @ <blockquote>
  @ <blockquote><p>
  @ <input type="submit" name="submit" value="Apply Changes">
  @ <input type="submit" name="clear" value="Revert To Default">
  @ <input type="submit" name="setup" value="Cancel">
  @ </blockquote>
  @ </form>
  @ </p></blockquote>
  @ </div></form>
  @ <hr>
  @ <h2>Default %s(zTitle)</h2>
  @ <blockquote><pre>
  @ %h(zDfltValue)
  @ </pre></blockquote>
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: tktsetup_tab
** Administrative page for defining the "ticket" table used
** to hold ticket information.
*/
void tktsetup_tab_page(void){
  static const char zDesc[] =
  @ <p>Enter a valid CREATE TABLE statement for the "ticket" table.  The
  @ Enter a valid CREATE TABLE statement for the "ticket" table.  The
  @ table must contain columns named "tkt_id", "tkt_uuid", and "tkt_mtime"
  @ with an unique index on "tkt_uuid" and "tkt_mtime".</p>
  @ with an unique index on "tkt_uuid" and "tkt_mtime".
  ;
  tktsetup_generic(
    "Ticket Table Schema",
    "ticket-table",
    zDefaultTicketTable,
    zDesc,
    ticket_schema_check,
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@ }
;

/*
** Return the ticket common code.
*/
const char *ticket_common_code(void){
  return db_get("ticket-common", (char*)zDefaultTicketCommon);
  return db_get("ticket-common", zDefaultTicketCommon);
}

/*
** WEBPAGE: tktsetup_com
** Administrative page used to define TH1 script that is
** common to all ticket screens.
*/
void tktsetup_com_page(void){
  static const char zDesc[] =
  @ <p>Enter TH1 script that initializes variables prior to generating
  @ any of the ticket view, edit, or creation pages.</p>
  @ Enter TH1 script that initializes variables prior to generating
  @ any of the ticket view, edit, or creation pages.
  ;
  tktsetup_generic(
    "Ticket Common Script",
    "ticket-common",
    zDefaultTicketCommon,
    zDesc,
    0,
    0,
    30
  );
}

static const char zDefaultTicketChange[] =
@ return
;

/*
** Return the ticket change code.
*/
const char *ticket_change_code(void){
  return db_get("ticket-change", zDefaultTicketChange);
}

/*
** WEBPAGE: tktsetup_change
** Administrative screen used to view or edit the TH1 script
** that shows ticket changes.
*/
void tktsetup_change_page(void){
  static const char zDesc[] =
  @ Enter TH1 script that runs after processing the ticket editing
  @ and creation pages.
  ;
  tktsetup_generic(
    "Ticket Change Script",
    "ticket-change",
    zDefaultTicketChange,
    zDesc,
    0,
    0,
    30
  );
}

static const char zDefaultNew[] =
@ <th1>
@   if {![info exists mutype]} {set mutype Markdown}
@   if {[info exists submit]} {
@      set status Open
@      if {$mutype eq "HTML"} {
@        set mimetype "text/html"
@      } elseif {$mutype eq "Wiki"} {
@        set mimetype "text/x-fossil-wiki"
@      } elseif {$mutype eq "Markdown"} {
@        set mimetype text/x-markdown
@      } elseif {$mutype eq {[links only]}} {
@        set mimetype "text/x-fossil-plain"
@      } else {
@        set mimetype "text/plain"
@      }
@      submit_ticket
@      set preview 1
@   }
@ </th1>
@ <h1 align="center">Enter A New Ticket</h1>
@ <h1 style="text-align: center;">Enter A New Ticket</h1>
@ <table cellpadding="5">
@ <tr>
@ <td colspan="2">
@ <td colspan="3">
@ Enter a one-line summary of the ticket:<br>
@ <input type="text" name="title" size="60" value="$<title>">
@ </td>
@ </tr>
@ 
@
@ <tr>
@ <td align="right">Type:
@ <th1>combobox type $type_choices 1</th1>
@ <td align="right">Type:</td>
@ <td align="left"><th1>combobox type $type_choices 1</th1></td>
@ </td>
@ <td>What type of ticket is this?</td>
@ <td align="left">What type of ticket is this?</td>
@ </tr>
@ 
@
@ <tr>
@ <td align="right">Version: 
@ <td align="right">Version:</td>
@ <td align="left">
@ <input type="text" name="foundin" size="20" value="$<foundin>">
@ </td>
@ <td>In what version or build number do you observe the problem?</td>
@ <td align="left">In what version or build number do you observe
@ the problem?</td>
@ </tr>
@ 
@
@ <tr>
@ <td align="right">Severity:
@ <th1>combobox severity $severity_choices 1</th1>
@ <td align="right">Severity:</td>
@ <td align="left"><th1>combobox severity $severity_choices 1</th1></td>
@ </td>
@ <td>How debilitating is the problem?  How badly does the problem
@ <td align="left">How debilitating is the problem?  How badly does the problem
@ affect the operation of the product?</td>
@ </tr>
@ 
@
@ <tr>
@ <td align="right">EMail:
@ <input type="text" name="private_contact" value="$<private_contact>" size="30">
@ <td align="right">EMail:</td>
@ <td align="left">
@ <input name="private_contact" value="$<private_contact>" size="30">
@ </td>
@ <td><u>Not publicly visible</u>. Used by developers to contact you with
@ questions.</td>
@ <td align="left"><u>Not publicly visible</u>
@ Used by developers to contact you with questions.</td>
@ </tr>
@ 
@
@ <tr>
@ <td colspan="2">
@ <td colspan="3">
@ Enter a detailed description of the problem.
@ For code defects, be sure to provide details on exactly how
@ the problem can be reproduced.  Provide as much detail as
@ possible.
@ possible.  Format:
@ <th1>combobox mutype {HTML {[links only]} Markdown {Plain Text} Wiki} 1</th1>
@ <br>
@ <th1>set nline [linecount $comment 50 10]</th1>
@ <textarea name="comment" cols="80" rows="$nline"
@  wrap="virtual" class="wikiedit">$<comment></textarea><br>
@ <textarea name="icomment" cols="80" rows="$nline"
@  wrap="virtual" class="wikiedit">$<icomment></textarea><br>
@ </tr>
@
@ <th1>enable_output [info exists preview]</th1>
@ <tr><td colspan="3">
@ Description Preview:<br><hr>
@ <th1>
@ if {$mutype eq "Wiki"} {
@   wiki $icomment
@ } elseif {$mutype eq "Plain Text"} {
@   set r [randhex]
@   wiki "<verbatim-$r>[string trimright $icomment]\n</verbatim-$r>"
@ } elseif {$mutype eq "Markdown"} {
@   html [lindex [markdown "$icomment\n"] 1]
@ } elseif {$mutype eq {[links only]}} {
@   set r [randhex]
@   wiki "<verbatim-$r links>[string trimright $icomment]\n</verbatim-$r>"
@ } else {
@   wiki "<nowiki>$icomment\n</nowiki>"
@ }
@ </th1>
@ <hr></td></tr>
@ <th1>enable_output 1</th1>
@
@ <tr>
@ <td><td align="left">
@ <input type="submit" name="preview" value="Preview">
@ </td>
@ <td align="left">See how the description will appear after formatting.</td>
@ </tr>
@
@ <th1>enable_output [info exists preview]</th1>
@ <tr><td colspan="2">
@ Description Preview:<br><hr>
@ <th1>wiki $comment</th1>
@ <hr>
@ </td></tr>
@ <th1>enable_output 1</th1>
@ 
@ <tr>
@ <td align="right">
@ <td><td align="left">
@ <input type="submit" name="submit" value="Submit">
@ </td>
@ <td>After filling in the information above, press this button to create
@ the new ticket</td>
@ <td align="left">After filling in the information above, press this
@ button to create the new ticket</td>
@ </tr>
@ <th1>enable_output 1</th1>
@
@ <tr>
@ <td align="right">
@ <td><td align="left">
@ <input type="submit" name="cancel" value="Cancel">
@ </td>
@ <td>Abandon and forget this ticket</td>
@ </tr>
@ </table>
;

/*
** Return the code used to generate the new ticket page
*/
const char *ticket_newpage_code(void){
  return db_get("ticket-newpage", (char*)zDefaultNew);
  return db_get("ticket-newpage", zDefaultNew);
}

/*
** WEBPAGE: tktsetup_newpage
** Administrative page used to view or edit the TH1 script used
** to enter new tickets.
*/
void tktsetup_newpage_page(void){
  static const char zDesc[] =
  @ <p>Enter HTML with embedded TH1 script that will render the "new ticket"
  @ page</p>
  @ Enter HTML with embedded TH1 script that will render the "new ticket"
  @ page
  ;
  tktsetup_generic(
    "HTML For New Tickets",
    "ticket-newpage",
    zDefaultNew,
    zDesc,
    0,
    0,
    40
  );
}

static const char zDefaultView[] =
@ <table cellpadding="5">
@ <tr><td align="right">Ticket&nbsp;UUID:</td><td bgcolor="#d0d0d0" colspan="3">
@ $<tkt_uuid>
@ </td></tr>
@ <tr><td align="right">Title:</td>
@ <td bgcolor="#d0d0d0" colspan="3" valign="top">
@ <th1>wiki $title</th1>
@ <tr><td class="tktDspLabel">Ticket&nbsp;Hash:</td>
@ <th1>
@ if {[info exists tkt_uuid]} {
@   html "<td class='tktDspValue' colspan='3'>"
@   copybtn hash-tk 0 $tkt_uuid 2
@   if {[hascap s]} {
@     html " ($tkt_id)"
@   }
@   html "</td></tr>\n"
@ } else {
@   if {[hascap s]} {
@     html "<td class='tktDspValue' colspan='3'>Deleted "
@     html "(0)</td></tr>\n"
@   } else {
@     html "<td class='tktDspValue' colspan='3'>Deleted</td></tr>\n"
@   }
@ }
@ </th1>
@ <tr><td class="tktDspLabel">Title:</td>
@ <td class="tktDspValue" colspan="3">
@ $<title>
@ </td></tr>
@ <tr><td align="right">Status:</td><td bgcolor="#d0d0d0">
@ <tr><td class="tktDspLabel">Status:</td><td class="tktDspValue">
@ $<status>
@ </td>
@ <td align="right">Type:</td><td bgcolor="#d0d0d0">
@ <td class="tktDspLabel">Type:</td><td class="tktDspValue">
@ $<type>
@ </td></tr>
@ <tr><td align="right">Severity:</td><td bgcolor="#d0d0d0">
@ <tr><td class="tktDspLabel">Severity:</td><td class="tktDspValue">
@ $<severity>
@ </td>
@ <td align="right">Priority:</td><td bgcolor="#d0d0d0">
@ <td class="tktDspLabel">Priority:</td><td class="tktDspValue">
@ $<priority>
@ </td></tr>
@ <tr><td align="right">Subsystem:</td><td bgcolor="#d0d0d0">
@ <tr><td class="tktDspLabel">Subsystem:</td><td class="tktDspValue">
@ $<subsystem>
@ </td>
@ <td align="right">Resolution:</td><td bgcolor="#d0d0d0">
@ <td class="tktDspLabel">Resolution:</td><td class="tktDspValue">
@ $<resolution>
@ </td></tr>
@ <tr><td align="right">Last&nbsp;Modified:</td><td bgcolor="#d0d0d0">
@ $<tkt_datetime>
@ <tr><td class="tktDspLabel">Last&nbsp;Modified:</td><td class="tktDspValue">
@ <th1>
@ if {[info exists tkt_datetime]} {
@   html $tkt_datetime
@ }
@ </th1>
@ </td>
@ <th1>enable_output [hascap e]</th1>
@   <td align="right">Contact:</td><td bgcolor="#d0d0d0">
@   <td class="tktDspLabel">Contact:</td><td class="tktDspValue">
@   $<private_contact>
@   </td>
@ <th1>enable_output 1</th1>
@ </tr>
@ <tr><td align="right">Version&nbsp;Found&nbsp;In:</td>
@ <td colspan="3" valign="top" bgcolor="#d0d0d0">
@ <tr><td class="tktDspLabel">Version&nbsp;Found&nbsp;In:</td>
@ <td colspan="3" valign="top" class="tktDspValue">
@ $<foundin>
@ </td></tr>
@
@ <th1>
@ if {[info exists comment]} {
@   if {[string length $comment]>10} {
@     html {
@ <tr><td>Description &amp; Comments:</td></tr>
@ <tr><td colspan="4" bgcolor="#d0d0d0">
@ <span  bgcolor="#d0d0d0"><th1>wiki $comment</th1></span>
@ </td></tr>
@       <tr><td class="tktDspLabel">Description:</td></tr>
@       <tr><td colspan="5" class="tktDspValue">
@     }
@     if {[info exists plaintext]} {
@       set r [randhex]
@       wiki "<verbatim-$r links>\n$comment\n</verbatim-$r>"
@     } else {
@       wiki $comment
@     }
@   }
@ }
@ set seenRow 0
@ set alwaysPlaintext [info exists plaintext]
@ query {SELECT datetime(tkt_mtime) AS xdate, login AS xlogin,
@               mimetype as xmimetype, icomment AS xcomment,
@               username AS xusername
@          FROM ticketchng
@         WHERE tkt_id=$tkt_id AND length(icomment)>0} {
@   if {$seenRow} {
@     html "<hr>\n"
@   } else {
@     html "<tr><td class='tktDspLabel'>User Comments:</td></tr>\n"
@     html "<tr><td colspan='5' class='tktDspValue'>\n"
@     set seenRow 1
@   }
@   html "<span class='tktDspCommenter'>"
@   html "[htmlize $xlogin]"
@   if {$xlogin ne $xusername && [string length $xusername]>0} {
@     html " (claiming to be [htmlize $xusername])"
@   }
@   html " added on $xdate:"
@   html "</span>\n"
@   if {$alwaysPlaintext || $xmimetype eq "text/plain"} {
@     set r [randhex]
@     if {$xmimetype ne "text/plain"} {html "([htmlize $xmimetype])\n"}
@     wiki "<verbatim-$r>[string trimright $xcomment]</verbatim-$r>\n"
@   } elseif {$xmimetype eq "text/x-fossil-wiki"} {
@     wiki "<p>\n[string trimright $xcomment]\n</p>\n"
@   } elseif {$xmimetype eq "text/x-markdown"} {
@     html [lindex [markdown $xcomment] 1]
@   } elseif {$xmimetype eq "text/html"} {
@     wiki "<p><nowiki>\n[string trimright $xcomment]\n</nowiki>\n"
@   } else {
@     set r [randhex]
@     wiki "<verbatim-$r links>[string trimright $xcomment]</verbatim-$r>\n"
@   }
@ }
@ if {$seenRow} {html "</td></tr>\n"}
@ </th1>
@ </table>
;


/*
** Return the code used to generate the view ticket page
*/
const char *ticket_viewpage_code(void){
  return db_get("ticket-viewpage", (char*)zDefaultView);
  return db_get("ticket-viewpage", zDefaultView);
}

/*
** WEBPAGE: tktsetup_viewpage
** Administrative page used to view or edit the TH1 script that
** displays individual tickets.
*/
void tktsetup_viewpage_page(void){
  static const char zDesc[] =
  @ <p>Enter HTML with embedded TH1 script that will render the "view ticket"
  @ Enter HTML with embedded TH1 script that will render the "view ticket" page
  @ page</p>
  ;
  tktsetup_generic(
    "HTML For Viewing Tickets",
    "ticket-viewpage",
    zDefaultView,
    zDesc,
    0,
    0,
    40
  );
}

static const char zDefaultEdit[] =
@ <th1>
@   if {![info exists mutype]} {set mutype Markdown}
@   if {![info exists icomment]} {set icomment {}}
@   if {![info exists username]} {set username $login}
@   if {[info exists submit]} {
@     if {[info exists cmappnd]} {
@       if {[string length $cmappnd]>0} {
@         set ctxt "\n\n<hr><i>[htmlize $login]"
@         if {$username ne $login} {
@           set ctxt "$ctxt claiming to be [htmlize $username]"
@         }
@         set ctxt "$ctxt added on [date]:</i><br>\n$cmappnd"
@         append_field comment $ctxt
@       }
@     if {$mutype eq "Wiki"} {
@       set mimetype text/x-fossil-wiki
@     } elseif {$mutype eq "Markdown"} {
@       set mimetype text/x-markdown
@     } elseif {$mutype eq "HTML"} {
@       set mimetype text/html
@     } elseif {$mutype eq {[links only]}} {
@       set mimetype text/x-fossil-plain
@     } else {
@       set mimetype text/plain
@     }
@     submit_ticket
@     set preview 1
@   }
@ </th1>
@ <table cellpadding="5">
@ <tr><td align="right">Title:</td><td>
@ <tr><td class="tktDspLabel">Title:</td><td>
@ <input type="text" name="title" value="$<title>" size="60">
@ </td></tr>
@
@ <tr><td align="right">Status:</td><td>
@ <tr><td class="tktDspLabel">Status:</td><td>
@ <th1>combobox status $status_choices 1</th1>
@ </td></tr>
@
@ <tr><td align="right">Type:</td><td>
@ <tr><td class="tktDspLabel">Type:</td><td>
@ <th1>combobox type $type_choices 1</th1>
@ </td></tr>
@
@ <tr><td align="right">Severity:</td><td>
@ <tr><td class="tktDspLabel">Severity:</td><td>
@ <th1>combobox severity $severity_choices 1</th1>
@ </td></tr>
@
@ <tr><td align="right">Priority:</td><td>
@ <tr><td class="tktDspLabel">Priority:</td><td>
@ <th1>combobox priority $priority_choices 1</th1>
@ </td></tr>
@
@ <tr><td align="right">Resolution:</td><td>
@ <tr><td class="tktDspLabel">Resolution:</td><td>
@ <th1>combobox resolution $resolution_choices 1</th1>
@ </td></tr>
@
@ <tr><td align="right">Subsystem:</td><td>
@ <tr><td class="tktDspLabel">Subsystem:</td><td>
@ <th1>combobox subsystem $subsystem_choices 1</th1>
@ </td></tr>
@
@ <th1>enable_output [hascap e]</th1>
@   <tr><td align="right">Contact:</td><td>
@   <tr><td class="tktDspLabel">Contact:</td><td>
@   <input type="text" name="private_contact" size="40"
@    value="$<private_contact>">
@   </td></tr>
@ <th1>enable_output 1</th1>
@
@ <tr><td align="right">Version&nbsp;Found&nbsp;In:</td><td>
@ <tr><td class="tktDspLabel">Version&nbsp;Found&nbsp;In:</td><td>
@ <input type="text" name="foundin" size="50" value="$<foundin>">
@ </td></tr>
@
@ <tr><td colspan="2">
@ <th1>
@   if {![info exists eall]} {set eall 0}
@   if {[info exists aonlybtn]} {set eall 0}
@   if {[info exists eallbtn]} {set eall 1}
@   if {![hascap w]} {set eall 0}
@   if {![info exists cmappnd]} {set cmappnd {}}
@   set nline [linecount $comment 15 10]
@   enable_output $eall
@ </th1>
@   Description And Comments:<br>
@   <textarea name="comment" cols="80" rows="$nline"
@    wrap="virtual" class="wikiedit">$<comment></textarea><br>
@   Append Remark with format
@  <th1>combobox mutype {HTML {[links only]} Markdown {Plain Text} Wiki} 1</th1>
@   from
@   <input type="text" name="username" value="$<username>" size="30">:<br>
@   <textarea name="icomment" cols="80" rows="15"
@    wrap="virtual" class="wikiedit">$<icomment></textarea>
@   <input type="hidden" name="eall" value="1">
@   <input type="submit" name="aonlybtn" value="Append Remark">
@   <input type="submit" name="preview1btn" value="Preview">
@ <th1>enable_output [expr {!$eall}]</th1>
@   Append Remark from 
@   <input type="text" name="username" value="$<username>" size="30">:<br>
@   <textarea name="cmappnd" cols="80" rows="15"
@    wrap="virtual" class="wikiedit">$<cmappnd></textarea><br>
@ <th1>enable_output [expr {[hascap w] && !$eall}]</th1>
@ </td></tr>
@
@ <th1>enable_output [info exists preview]</th1>
@ <tr><td colspan="2">
@ Description Preview:<br><hr>
@ <th1>
@ if {$mutype eq "Wiki"} {
@   wiki $icomment
@ } elseif {$mutype eq "Plain Text"} {
@   set r [randhex]
@   wiki "<verbatim-$r>\n[string trimright $icomment]\n</verbatim-$r>"
@ } elseif {$mutype eq "Markdown"} {
@   html [lindex [markdown "$icomment\n"] 1]
@ } elseif {$mutype eq {[links only]}} {
@   set r [randhex]
@   wiki "<verbatim-$r links>\n[string trimright $icomment]</verbatim-$r>"
@ } else {
@   wiki "<nowiki>\n[string trimright $icomment]\n</nowiki>"
@ }
@   <input type="submit" name="eallbtn" value="Edit All">
@ <th1>enable_output [expr {!$eall}]</th1>
@ </th1>
@   <input type="submit" name="preview2btn" value="Preview">
@ <th1>enable_output 1</th1>
@ <hr>
@ </td></tr>
@ <th1>enable_output 1</th1>
@
@ <th1>enable_output [info exists preview1btn]</th1>
@ <tr><td colspan="2">
@ <tr>
@ Description Preview:<br><hr>
@ <th1>wiki $comment</th1>
@ <hr>
@ </td></tr>
@ <th1>enable_output [info exists preview2btn]</th1>
@ <tr><td colspan="2">
@ <td align="right">
@ <input type="submit" name="preview" value="Preview">
@ </td>
@ <td align="left">See how the description will appear after formatting.</td>
@ </tr>
@
@ <th1>enable_output [info exists preview]</th1>
@ <tr>
@ Description Preview:<br><hr>
@ <th1>wiki $cmappnd</th1>
@ <hr>
@ </td></tr>
@ <td align="right">
@ <input type="submit" name="submit" value="Submit">
@ </td>
@ <td align="left">Apply the changes shown above</td>
@ </tr>
@ <th1>enable_output 1</th1>
@
@ <tr>
@ <tr><td align="right"></td><td>
@ <td align="right">
@ <input type="submit" name="submit" value="Submit Changes">
@ <input type="submit" name="cancel" value="Cancel">
@ </td></tr>
@ </td>
@ <td>Abandon this edit</td>
@ </tr>
@
@ </table>
;

/*
** Return the code used to generate the edit ticket page
*/
const char *ticket_editpage_code(void){
  return db_get("ticket-editpage", (char*)zDefaultEdit);
  return db_get("ticket-editpage", zDefaultEdit);
}

/*
** WEBPAGE: tktsetup_editpage
** Administrative page for viewing or editing the TH1 script that
** drives the ticket editing page.
*/
void tktsetup_editpage_page(void){
  static const char zDesc[] =
  @ <p>Enter HTML with embedded TH1 script that will render the "edit ticket"
  @ Enter HTML with embedded TH1 script that will render the "edit ticket" page
  @ page</p>
  ;
  tktsetup_generic(
    "HTML For Editing Tickets",
    "ticket-editpage",
    zDefaultEdit,
    zDesc,
    0,
    0,
    40
  );
}

/*
** The default report list page
*/
static const char zDefaultReportList[] =
@ <th1>
@ if {[hascap n]} {
@ if {[anoncap n]} {
@   html "<p>Enter a new ticket:</p>"
@   html "<ul><li><a href='tktnew'>New ticket</a></li></ul>"
@ }
@ </th1>
@ 
@
@ <p>Choose a report format from the following list:</p>
@ <ol>
@ <th1>html $report_items</th1>
@ </ol>
@ 
@
@ <th1>
@ if {[hascap t]} {
@   html "<p>Create a new ticket display format:</p>"
@   html "<ul><li><a href='rptnew'>New report format</a></li></ul>"
@ if {[anoncap t q]} {
@   html "<p>Other options:</p>\n<ul>\n"
@   if {[anoncap t]} {
@     html "<li><a href='rptnew'>New report format</a></li>\n"
@   }
@   if {[anoncap q]} {
@     html "<li><a href='modreq'>Tend to pending moderation requests</a></li>\n"
@   }
@ }
@ </th1>
;

/*
** Return the code used to generate the report list
*/
const char *ticket_reportlist_code(void){
  return db_get("ticket-reportlist", (char*)zDefaultReportList);
  return db_get("ticket-reportlist", zDefaultReportList);
}

/*
** WEBPAGE: tktsetup_reportlist
** Administrative page used to view or edit the TH1 script that
** defines the "report list" page.
*/
void tktsetup_reportlist(void){
  static const char zDesc[] =
  @ <p>Enter HTML with embedded TH1 script that will render the "report list"
  @ Enter HTML with embedded TH1 script that will render the "report list" page
  @ page</p>
  ;
  tktsetup_generic(
    "HTML For Report List",
    "ticket-reportlist",
    zDefaultReportList,
    zDesc,
    0,
    0,
    40
  );
}

/*
** The default template ticket report format:
*/
static char zDefaultReport[] = 
static char zDefaultReport[] =
@ SELECT
@   CASE WHEN status IN ('Open','Verified') THEN '#f2dcdc'
@        WHEN status='Review' THEN '#e8e8e8'
@        WHEN status='Fixed' THEN '#cfe8bd'
@        WHEN status='Tested' THEN '#bde5d6'
@        WHEN status='Deferred' THEN '#cacae5'
@        ELSE '#c8c8c8' END AS 'bgcolor',
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*/
char *ticket_report_template(void){
  return db_get("ticket-report-template", zDefaultReport);
}

/*
** WEBPAGE: tktsetup_rpttplt
**
** Administrative page used to view or edit the ticket report
** template.
*/
void tktsetup_rpttplt_page(void){
  static const char zDesc[] =
  @ <p>Enter the default ticket report format template.  This is the
  @ the template report format that initially appears when creating a
  @ new ticket summary report.</p>
  @ Enter the default ticket report format template.  This is the
  @ template report format that initially appears when creating a
  @ new ticket summary report.
  ;
  tktsetup_generic(
    "Default Report Template",
    "ticket-report-template",
    zDefaultReport,
    zDesc,
    0,
    0,
    20
  );
}

/*
** The default template ticket key:
*/
static const char zDefaultKey[] = 
static const char zDefaultKey[] =
@ #ffffff Key:
@ #f2dcdc Active
@ #e8e8e8 Review
@ #cfe8bd Fixed
@ #bde5d6 Tested
@ #cacae5 Deferred
@ #c8c8c8 Closed
;


/*
** Return the template ticket report format:
*/
const char *ticket_key_template(void){
  return db_get("ticket-key-template", (char*)zDefaultKey);
  return db_get("ticket-key-template", zDefaultKey);
}

/*
** WEBPAGE: tktsetup_keytplt
**
** Administrative page used to view or edit the Key template
** for tickets.
*/
void tktsetup_keytplt_page(void){
  static const char zDesc[] =
  @ <p>Enter the default ticket report color-key template.  This is the
  @ Enter the default ticket report color-key template.  This is the
  @ the color-key that initially appears when creating a
  @ new ticket summary report.</p>
  @ new ticket summary report.
  ;
  tktsetup_generic(
    "Default Report Color-Key Template",
    "ticket-key-template",
    zDefaultKey,
    zDesc,
    0,
    0,
    10
  );
}

/*
** WEBPAGE: tktsetup_timeline
**
** Administrative page used ot configure how tickets are
** rendered on timeline views.
*/
void tktsetup_timeline_page(void){
  login_check_credentials();
  if( !g.okSetup ){
    login_needed();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  if( P("setup") ){
    cgi_redirect("tktsetup");
  }
  style_set_current_feature("tktsetup");
  style_header("Ticket Display On Timelines");
  db_begin_transaction();
  @ <form action="%s(g.zBaseURL)/tktsetup_timeline" method="POST">
  @ <form action="%R/tktsetup_timeline" method="post"><div>
  login_insert_csrf_secret();

  @ <hr>
  entry_attribute("Ticket Title", 40, "ticket-title-expr", "t", "title");
  entry_attribute("Ticket Title", 40, "ticket-title-expr", "t",
                  "title", 0);
  @ <p>An SQL expression in a query against the TICKET table that will
  @ return the title of the ticket for display purposes.</p>
  @ return the title of the ticket for display purposes.
  @ (Property: ticket-title-expr)</p>

  @ <hr>
  entry_attribute("Ticket Status", 40, "ticket-status-column", "s", "status");
  entry_attribute("Ticket Status", 40, "ticket-status-column", "s",
                  "status", 0);
  @ <p>The name of the column in the TICKET table that contains the ticket
  @ status in human-readable form.  Case sensitive.</p>
  @ status in human-readable form.  Case sensitive.
  @ (Property: ticket-status-column)</p>

  @ <hr>
  entry_attribute("Ticket Closed", 40, "ticket-closed-expr", "c",
                  "status='Closed'");
                  "status='Closed'", 0);
  @ <p>An SQL expression that evaluates to true in a TICKET table query if
  @ the ticket is closed.</p>
  @ the ticket is closed.
  @ (Property: ticket-closed-expr)</p>

  @ <hr>
  @ <p>
  @ <input type="submit"  name="submit" value="Apply Changes">
  @ <input type="submit" name="setup" value="Cancel">
  @ </p>
  @ </form>
  @ </div></form>
  db_end_transaction(0);
  style_footer();
  
  style_finish_page();

}
Deleted src/translate.c.
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/*
** Copyright (c) 2002 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** begin with the "@" character are translated into cgi_printf() statements
** and the translated code is written on standard output.
**
** The problem this program is attempt to solve is as follows:  When
** writing CGI programs in C, we typically want to output a lot of HTML
** text to standard output.  In pure C code, this involves doing a
** printf() with a big string containing all that text.  But we have
** to insert special codes (ex: \n and \") for many common characters,
** which interferes with the readability of the HTML.
**
** This tool allows us to put raw HTML, without the special codes, in
** the middle of a C program.  This program then translates the text
** into standard C by inserting all necessary backslashes and other
** punctuation.
*/
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

/*
** Space to hold arguments at the end of the cgi_printf()
*/
#define MX_ARG_SP 10000
static char zArg[MX_ARG_SP];
static int nArg = 0;

/*
** True if we are currently in a cgi_printf()
*/
static int inPrint = 0;

/*
** True if we are currently doing a free string
*/
static int inStr = 0;

/*
** Terminate an active cgi_printf() or free string
*/
static void end_block(FILE *out){
  if( inPrint ){
    zArg[nArg] = 0;
    fprintf(out, "%s);\n", zArg);
    nArg = 0;
    inPrint = 0;
  }
}

/*
** Translate the input stream into the output stream
*/
static void trans(FILE *in, FILE *out){
  int i, j, k;        /* Loop counters */
  char c1, c2;        /* Characters used to start a comment */
  int lastWasEq = 0;  /* True if last non-whitespace character was "=" */
  char zLine[2000];   /* A single line of input */
  char zOut[4000];    /* The input line translated into appropriate output */

  c1 = c2 = '-';
  while( fgets(zLine, sizeof(zLine), in) ){
    for(i=0; zLine[i] && isspace(zLine[i]); i++){}
    if( zLine[i]!='@' ){
      if( inPrint || inStr ) end_block(out);
      fprintf(out,"%s",zLine);
                       /* 0123456789 12345 */
      if( strncmp(zLine, "/* @-comment: ", 14)==0 ){
        c1 = zLine[14];
        c2 = zLine[15];
      }
      i += strlen(&zLine[i]);
      while( i>0 && isspace(zLine[i-1]) ){ i--; }
      lastWasEq = i>0 && zLine[i-1]=='=';
    }else if( lastWasEq ){
      /* If the last non-whitespace character before the first @ was
      ** an "=" then generate a string literal.  But skip comments
      ** consisting of all text between c1 and c2 (default "--")
      ** and end of line.
      */
      int indent, omitline;
      i++;
      if( isspace(zLine[i]) ){ i++; }
      indent = i - 2;
      if( indent<0 ) indent = 0;
      omitline = 0;
      for(j=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){
        if( zLine[i]==c1 && (c2==' ' || zLine[i+1]==c2) ){
           omitline = 1; break; 
        }
        if( zLine[i]=='"' || zLine[i]=='\\' ){ zOut[j++] = '\\'; }
        zOut[j++] = zLine[i];
      }
      while( j>0 && isspace(zOut[j-1]) ){ j--; }
      zOut[j] = 0;
      if( j<=0 && omitline ){
        fprintf(out,"\n");
      }else{
        fprintf(out,"%*s\"%s\\n\"\n",indent, "", zOut);
      }
    }else{
      /* Otherwise (if the last non-whitespace was not '=') then generate
      ** a cgi_printf() statement whose format is the text following the '@'.
      ** Substrings of the form "%C(...)" where C is any character will
      ** puts "%C" in the format and add the "..." as an argument to the
      ** cgi_printf call.
      */
      int indent;
      i++;
      if( isspace(zLine[i]) ){ i++; }
      indent = i;
      for(j=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){
        if( zLine[i]=='"' || zLine[i]=='\\' ){ zOut[j++] = '\\'; }
        zOut[j++] = zLine[i];
        if( zLine[i]!='%' || zLine[i+1]=='%' || zLine[i+1]==0 ) continue;
        if( zLine[i+2]!='(' ) continue;
        i++;
        zOut[j++] = zLine[i];
        zArg[nArg++] = ',';
        i += 2;
        k = 1;
        while( zLine[i] ){
          if( zLine[i]==')' ){
            k--;
            if( k==0 ) break;
          }else if( zLine[i]=='(' ){
            k++;
          }
          zArg[nArg++] = zLine[i++];
        }
      }
      zOut[j] = 0;
      if( !inPrint ){
        fprintf(out,"%*scgi_printf(\"%s\\n\"",indent-2,"", zOut);
        inPrint = 1;
      }else{
        fprintf(out,"\n%*s\"%s\\n\"",indent+5, "", zOut);
      }
    }      
  }
}

int main(int argc, char **argv){
  if( argc==2 ){
    FILE *in = fopen(argv[1], "r");
    if( in==0 ){
      fprintf(stderr,"can not open %s\n", argv[1]);
      exit(1);
    }
    trans(in, stdout);
    fclose(in);
  }else{
    trans(stdin, stdout);
  }
  return 0;
}
Added src/tree.js.








































































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/* Javascript to implement the file hierarchy tree.
*/
(function(){
function isExpanded(ul){
  return ul.className=='';
}

function toggleDir(ul, useInitValue){
  if( !useInitValue ){
    expandMap[ul.id] = !isExpanded(ul);
    history.replaceState(expandMap, '');
  }
  ul.className = expandMap[ul.id] ? '' : 'collapsed';
}

function toggleAll(tree, useInitValue){
  var lists = tree.querySelectorAll('.subdir > ul > li ul');
  if( !useInitValue ){
    var expand = true;  /* Default action: make all sublists visible */
    for( var i=0; lists[i]; i++ ){
      if( isExpanded(lists[i]) ){
        expand = false; /* Any already visible - make them all hidden */
        break;
      }
    }
    expandMap = {'*': expand};
    history.replaceState(expandMap, '');
  }
  var className = expandMap['*'] ? '' : 'collapsed';
  for( var i=0; lists[i]; i++ ){
    lists[i].className = className;
  }
}

function checkState(){
  expandMap = history.state || {};
  if( '*' in expandMap ) toggleAll(outer_ul, true);
  for( var id in expandMap ){
    if( id!=='*' ) toggleDir(document.getElementById(id), true);
  }
}

function belowSubdir(node){
  do{
    node = node.parentNode;
    if( node==subdir ) return true;
  } while( node && node!=outer_ul );
  return false;
}

var history = window.history || {};
if( !history.replaceState ) history.replaceState = function(){};
var outer_ul = document.querySelector('.filetree > ul');
var subdir = outer_ul.querySelector('.subdir');
var expandMap = {};
checkState();
outer_ul.onclick = function(e){
  e = e || window.event;
  var a = e.target || e.srcElement;
  if( a.nodeName!='A' ) return true;
  if( a.parentNode.parentNode==subdir ){
    toggleAll(outer_ul);
    return false;
  }
  if( !belowSubdir(a) ) return true;
  var ul = a.parentNode.nextSibling;
  while( ul && ul.nodeName!='UL' ) ul = ul.nextSibling;
  if( !ul ) return true; /* This is a file link, not a directory */
  toggleDir(ul);
  return false;
}
}())
Changes to src/undo.c.
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** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
** 
**
** This file implements the undo/redo functionality.
*/
#include "config.h"
#include "undo.h"


#if INTERFACE
/*
** Possible return values from the undo_maybe_save() routine.
*/
#define UNDO_NONE     (0) /* Placeholder only used to initialize vars. */
#define UNDO_SAVED_OK (1) /* The specified file was saved succesfully. */
#define UNDO_DISABLED (2) /* File not saved, subsystem is disabled. */
#define UNDO_INACTIVE (3) /* File not saved, subsystem is not active. */
#define UNDO_TOOBIG   (4) /* File not saved, it exceeded a size limit. */
#endif

/*
** Undo the change to the file zPathname.  zPathname is the pathname
** of the file relative to the root of the repository.  If redoFlag is
** true the redo a change.  If there is nothing to undo (or redo) then
** this routine is a noop.
*/
static void undo_one(const char *zPathname, int redoFlag){
  Stmt q;
  char *zFullname;
  db_prepare(&q,
    "SELECT content, existsflag, isExe, isLink FROM undo"
    "SELECT content, existsflag FROM undo WHERE pathname=%Q AND redoflag=%d",
    " WHERE pathname=%Q AND redoflag=%d",
     zPathname, redoFlag
  );
  if( db_step(&q)==SQLITE_ROW ){
    int old_exists;
    int new_exists;
    int old_exe;
    int new_exe;
    int new_link;
    int old_link;
    Blob current;
    Blob new;
    zFullname = mprintf("%s/%s", g.zLocalRoot, zPathname);
    new_exists = file_size(zFullname)>=0;
    zFullname = mprintf("%s%s", g.zLocalRoot, zPathname);
    old_link = db_column_int(&q, 3);
    new_exists = file_size(zFullname, RepoFILE)>=0;
    new_link = file_islink(0);
    if( new_exists ){
      blob_read_from_file(&current, zFullname);
      blob_read_from_file(&current, zFullname, RepoFILE);
      new_exe = file_isexe(0,0);
    }else{
      blob_zero(&current);
      new_exe = 0;
    }
    blob_zero(&new);
    old_exists = db_column_int(&q, 1);
    old_exe = db_column_int(&q, 2);
    if( old_exists ){
      db_ephemeral_blob(&q, 0, &new);
    }
    if( file_unsafe_in_tree_path(zFullname) ){
      /* do nothign with this unsafe file */
    if( old_exists ){
    }else if( old_exists ){
      if( new_exists ){
        printf("%s %s\n", redoFlag ? "REDO" : "UNDO", zPathname);
        fossil_print("%s   %s\n", redoFlag ? "REDO" : "UNDO", zPathname);
      }else{
        printf("NEW %s\n", zPathname);
        fossil_print("NEW    %s\n", zPathname);
      }
      if( new_exists && (new_link || old_link) ){
        file_delete(zFullname);
      }
      if( old_link ){
        symlink_create(blob_str(&new), zFullname);
      }else{
      blob_write_to_file(&new, zFullname);
        blob_write_to_file(&new, zFullname);
      }
      file_setexe(zFullname, old_exe);
    }else{
      printf("DELETE %s\n", zPathname);
      unlink(zFullname);
      fossil_print("DELETE %s\n", zPathname);
      file_delete(zFullname);
    }
    blob_reset(&new);
    free(zFullname);
    db_finalize(&q);
    db_prepare(&q, 
       "UPDATE undo SET content=:c, existsflag=%d, redoflag=NOT redoflag"
    db_prepare(&q,
       "UPDATE undo SET content=:c, existsflag=%d, isExe=%d, isLink=%d,"
             " redoflag=NOT redoflag"
       " WHERE pathname=%Q",
       new_exists, zPathname
       new_exists, new_exe, new_link, zPathname
    );
    if( new_exists ){
      db_bind_blob(&q, ":c", &current);
    }
    db_step(&q);
    blob_reset(&current);
  }
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    "CREATE TEMP TABLE undo_vmerge_2 AS SELECT * FROM vmerge;"
    "DELETE FROM vmerge;"
    "INSERT INTO vmerge SELECT * FROM undo_vmerge;"
    "DELETE FROM undo_vmerge;"
    "INSERT INTO undo_vmerge SELECT * FROM undo_vmerge_2;"
    "DROP TABLE undo_vmerge_2;"
  );
  if( db_table_exists("localdb", "undo_stash") ){
    if( redoFlag ){
      db_multi_exec(
        "DELETE FROM stash WHERE stashid IN (SELECT stashid FROM undo_stash);"
        "DELETE FROM stashfile"
        " WHERE stashid NOT IN (SELECT stashid FROM stash);"
      );
    }else{
      db_multi_exec(
        "INSERT OR IGNORE INTO stash SELECT * FROM undo_stash;"
        "INSERT OR IGNORE INTO stashfile SELECT * FROM undo_stashfile;"
      );
    }
  }
  ncid = db_lget_int("undo_checkout", 0);
  ucid = db_lget_int("checkout", 0);
  db_lset_int("undo_checkout", ucid);
  db_lset_int("checkout", ncid);
  db_set_checkout(ncid);
}

/*
** Reset the the undo memory.
** Reset the undo memory.
*/
void undo_reset(void){
  static const char zSql[] =
    @ DROP TABLE IF EXISTS undo;
    @ DROP TABLE IF EXISTS undo_vfile;
    @ DROP TABLE IF EXISTS undo_vmerge;
    @ DROP TABLE IF EXISTS undo_pending;
    @ DROP TABLE IF EXISTS undo_stash;
    @ DROP TABLE IF EXISTS undo_stashfile;
    ;
  db_multi_exec(zSql);
  db_exec_sql(zSql);
  db_lset_int("undo_available", 0);
  db_lset_int("undo_checkout", 0);
}

/*
** The following variable stores the original command-line of the
** command that is a candidate to be undone.
*/
static char *undoCmd = 0;

/*
** This flag is true if we are in the process of collecting file changes
** for undo.  When this flag is false, undo_save() is a no-op.
**
** The undoDisable flag, if set, prevents undo from being activated.
*/
static int undoActive = 0;
static int undoDisable = 0;


/*
** Capture the current command-line and store it as part of the undo
** state.  This routine is called before options are extracted from the
** command-line so that we can record the complete command-line.
*/
void undo_capture_command_line(void){
  Blob cmdline;
  int i;
  if( undoCmd!=0 || undoDisable ) return;
  blob_zero(&cmdline);
  for(i=1; i<g.argc; i++){
    if( i>1 ) blob_append(&cmdline, " ", 1);
    blob_append(&cmdline, g.argv[i], -1);
  }
  undoCmd = blob_str(&cmdline);
}

/*
** Begin capturing a snapshot that can be undone.
*/
void undo_begin(void){
  int cid;
  static const char zSql[] = 
    @ CREATE TABLE undo(
  static const char zSql[] =
    @ CREATE TABLE localdb.undo(
    @   pathname TEXT UNIQUE,             -- Name of the file
    @   redoflag BOOLEAN,                 -- 0 for undoable.  1 for redoable
    @   existsflag BOOLEAN,               -- True if the file exists
    @   isExe BOOLEAN,                    -- True if the file is executable
    @   isLink BOOLEAN,                   -- True if the file is symlink
    @   content BLOB                      -- Saved content
    @ );
    @ CREATE TABLE undo_vfile AS SELECT * FROM vfile;
    @ CREATE TABLE undo_vmerge AS SELECT * FROM vmerge;
    @ CREATE TABLE localdb.undo_vfile AS SELECT * FROM vfile;
    @ CREATE TABLE localdb.undo_vmerge AS SELECT * FROM vmerge;
    @ CREATE TABLE undo_pending(undoId INTEGER PRIMARY KEY);
  ;
  if( undoDisable ) return;
  undo_reset();
  db_multi_exec(zSql);
  db_exec_sql(zSql);
  cid = db_lget_int("checkout", 0);
  db_lset_int("undo_checkout", cid);
  db_lset_int("undo_available", 1);
  db_lset("undo_cmdline", undoCmd);
  undoActive = 1;
}

/*
** Permanently disable undo
*/
void undo_disable(void){
  undoDisable = 1;
}

/*
** This flag is true if one or more files have changed and have been
** recorded in the undo log but the undo log has not yet been committed.
**
** If a fatal error occurs and this flag is set, that means we should
** rollback all the filesystem changes.
*/
static int undoNeedRollback = 0;

/*
** Save the current content of the file zPathname so that it
** will be undoable.  The name is relative to the root of the
** tree.
*/
void undo_save(const char *zPathname){
  if( undoDisable ) return;
  if( undo_maybe_save(zPathname, -1)!=UNDO_SAVED_OK ){
    fossil_fatal("failed to save undo information for path: %s",
                 zPathname);
  }
}

/*
** Possibly save the current content of the file zPathname so
** that it will be undoable.  The name is relative to the root
** of the tree.  The limit argument may be used to specify the
** maximum size for the file to be saved.  If the size of the
** specified file exceeds this size limit (in bytes), it will
** not be saved and an appropriate code will be returned.
**
** WARNING: Please do NOT call this function with a limit
**          value less than zero, call the undo_save()
**          function instead.
**
** The return value of this function will always be one of the
** following codes:
**
** UNDO_SAVED_OK: The specified file was saved succesfully.
**
** UNDO_DISABLED: The specified file was NOT saved, because the
**                "undo subsystem" is disabled.  This error may
**                indicate that a call to undo_disable() was
**                issued.
**
** UNDO_INACTIVE: The specified file was NOT saved, because the
**                "undo subsystem" is not active.  This error
**                may indicate that a call to undo_begin() is
**                missing.
**
**   UNDO_TOOBIG: The specified file was NOT saved, because it
**                exceeded the specified size limit.  It is
**                impossible for this value to be returned if
**                the specified size limit is less than zero
**                (i.e. unlimited).
*/
int undo_maybe_save(const char *zPathname, i64 limit){
  char *zFullname;
  Blob content;
  int existsFlag;
  i64 size;
  int result;
  Stmt q;

  if( undoDisable ) return UNDO_DISABLED;
  if( !undoActive ) return;
  zFullname = mprintf("%s/%s", g.zLocalRoot, zPathname);
  existsFlag = file_size(zFullname)>=0;
  db_prepare(&q,
    "REPLACE INTO undo(pathname,redoflag,existsflag,content)"
    " VALUES(%Q,0,%d,:c)",
    zPathname, existsFlag
  );
  if( existsFlag ){
    blob_read_from_file(&content, zFullname);
    db_bind_blob(&q, ":c", &content);
  if( !undoActive ) return UNDO_INACTIVE;
  zFullname = mprintf("%s%s", g.zLocalRoot, zPathname);
  size = file_size(zFullname, RepoFILE);
  if( limit<0 || size<=limit ){
    int existsFlag = (size>=0);
    int isLink = file_islink(zFullname);
    Stmt q;
    Blob content;
    db_prepare(&q,
      "INSERT OR IGNORE INTO"
      "   undo(pathname,redoflag,existsflag,isExe,isLink,content)"
      " VALUES(%Q,0,%d,%d,%d,:c)",
      zPathname, existsFlag, file_isexe(zFullname,RepoFILE), isLink
    );
    if( existsFlag ){
      blob_read_from_file(&content, zFullname, RepoFILE);
      db_bind_blob(&q, ":c", &content);
    }
    db_step(&q);
    db_finalize(&q);
    if( existsFlag ){
      blob_reset(&content);
    }
    undoNeedRollback = 1;
    result = UNDO_SAVED_OK;
  }else{
    result = UNDO_TOOBIG;
  }
  free(zFullname);
  return result;
}
  db_step(&q);
  db_finalize(&q);
  if( existsFlag ){
    blob_reset(&content);
  }
  undoNeedRollback = 1;

/*
** Returns an error message for the undo_maybe_save() return code.
** Currently, this function assumes that the caller is using the
** returned error message in a context prefixed with "because".
*/
const char *undo_save_message(int rc){
  static char zRc[32];

  switch( rc ){
    case UNDO_NONE:     return "undo is disabled for this operation";
    case UNDO_SAVED_OK: return "the save operation was successful";
    case UNDO_DISABLED: return "the undo subsystem is disabled";
    case UNDO_INACTIVE: return "the undo subsystem is inactive";
    case UNDO_TOOBIG:   return "the file is too big";
    default: {
      sqlite3_snprintf(sizeof(zRc), zRc, "of error code %d", rc);
    }
  }
  return zRc;
}

/*
** Make the current state of stashid undoable.
*/
void undo_save_stash(int stashid){
  db_multi_exec(
    "CREATE TABLE IF NOT EXISTS localdb.undo_stash"
    "  AS SELECT * FROM stash WHERE 0;"
    "INSERT INTO undo_stash"
    " SELECT * FROM stash WHERE stashid=%d;",
    stashid
  );
  db_multi_exec(
    "CREATE TABLE IF NOT EXISTS localdb.undo_stashfile"
    "  AS SELECT * FROM stashfile WHERE 0;"
    "INSERT INTO undo_stashfile"
    " SELECT * FROM stashfile WHERE stashid=%d;",
    stashid
  );
}

/*
** Complete the undo process is one is currently in process.
*/
void undo_finish(void){
  if( undoActive ){
    if( undoNeedRollback ){
      fossil_print(" \"fossil undo\" is available to undo changes"
             " to the working checkout.\n");
    }
    undoActive = 0;
    undoNeedRollback = 0;
  }
}

/*
** This routine is called when the process aborts due to an error.
** If an undo was being accumulated but was not finished, attempt
** to rollback all of the filesystem changes.
**
** This rollback occurs, for example, if an "update" or "merge" operation
** could not run to completion because a file that needed to be written
** was locked or had permissions turned off.
*/
void undo_rollback(void){
  if( !undoNeedRollback ) return;
  assert( undoActive );
  undoNeedRollback = 0;
  undoActive = 0;
  printf("Rolling back prior filesystem changes...\n");
  fossil_print("Rolling back prior filesystem changes...\n");
  undo_all_filesystem(0);
}

/*
** COMMAND: undo
** COMMAND: redo*
**
** Usage: %fossil undo ?FILENAME...?
** Usage: %fossil undo ?OPTIONS? ?FILENAME...?
**    or: %fossil redo ?OPTIONS? ?FILENAME...?
**
** The undo command reverts the changes caused by the previous command
** if the previous command is one of the following:
** Undo the most recent update or merge or revert operation.  If FILENAME is
** specified then restore the content of the named file(s) but otherwise
** leave the update or merge or revert in effect.
**  * fossil update
**  * fossil merge
**  * fossil revert
**  * fossil stash pop
**  * fossil stash apply
**  * fossil stash drop
**  * fossil stash goto
**  * fossil clean (*see note below*)
**
** Note: The "fossil clean" command only saves state for files less than
** 10MiB in size and so if fossil clean deleted files larger than that,
** then "fossil undo" will not recover the larger files.
**
** If FILENAME is specified then restore the content of the named
** file(s) but otherwise leave the update or merge or revert in effect.
** The redo command undoes the effect of the most recent undo.
**
** A single level of undo/redo is supported.  The undo/redo stack
** is cleared by the commit and checkout commands.
*/
** If the -n|--dry-run option is present, no changes are made and instead
** the undo or redo command explains what actions the undo or redo would
** have done had the -n|--dry-run been omitted.
**
void undo_cmd(void){
  int undo_available;
  db_must_be_within_tree();
  db_begin_transaction();
  undo_available = db_lget_int("undo_available", 0);
  if( g.argc==2 ){
    if( undo_available!=1 ){
      fossil_fatal("no update or merge operation is available to undo");
    }
    undo_all(0);
    db_lset_int("undo_available", 2);
  }else if( g.argc>=3 ){
    int i;
    if( undo_available==0 ){
      fossil_fatal("no update or merge operation is available to undo");
    }
    for(i=2; i<g.argc; i++){
      const char *zFile = g.argv[i];
      Blob path;
      file_tree_name(zFile, &path, 1);
      undo_one(blob_str(&path), 0);
      blob_reset(&path);
    }
  }
  db_end_transaction(0);
}

/*
** COMMAND: redo
** If the most recent command is not one of those listed as undoable,
** then the undo command might try to restore the state to be what it was
** prior to the last undoable command, or it might be a no-op.  If in
** doubt about what the undo command will do, first run it with the -n
** option.
**
** A single level of undo/redo is supported.  The undo/redo stack
** is cleared by the commit and check-out commands.  Other commands may
** or may not clear the undo stack.
**
** Future versions of Fossil might add new commands to the set of commands
** Usage: %fossil redo ?FILENAME...?
** that are undoable.
**
** Redo the an update or merge or revert operation that has been undone
** by the undo command.  If FILENAME is specified then restore the changes
** Options:
**   -n|--dry-run   Do not make changes, but show what would be done
** associated with the named file(s) but otherwise leave the update
** or merge undone.
**
** A single level of undo/redo is supported.  The undo/redo stack
** is cleared by the commit and checkout commands.
** See also: [[commit]], [[status]]
*/
void redo_cmd(void){
void undo_cmd(void){
  int isRedo = g.argv[1][0]=='r';
  int undo_available;
  int dryRunFlag = find_option("dry-run", "n", 0)!=0;
  const char *zCmd = isRedo ? "redo" : "undo";

  if( !dryRunFlag ){
    dryRunFlag = find_option("explain", 0, 0)!=0;
  }
  db_must_be_within_tree();
  verify_all_options();
  db_begin_transaction();
  undo_available = db_lget_int("undo_available", 0);
  if( dryRunFlag ){
    if( undo_available==0 ){
      fossil_print("No undo or redo is available\n");
    }else{
      Stmt q;
      int nChng = 0;
      const char *zArticle = undo_available==1 ? "An" : "A";
      zCmd = undo_available==1 ? "undo" : "redo";
      fossil_print("%s %s is available for the following command:\n\n"
                   "   %s %s\n\n",
                   zArticle, zCmd, g.argv[0], db_lget("undo_cmdline", "???"));
      db_prepare(&q,
        "SELECT existsflag, pathname FROM undo ORDER BY pathname"
      );
      while( db_step(&q)==SQLITE_ROW ){
        if( nChng==0 ){
          fossil_print("The following file changes would occur if the "
                       "command above is %sne:\n\n", zCmd);
        }
        nChng++;
        fossil_print("%s %s\n",
           db_column_int(&q,0) ? "UPDATE" : "DELETE",
           db_column_text(&q, 1)
        );
      }
      db_finalize(&q);
      if( nChng==0 ){
        fossil_print("No file changes would occur with this undo/redo.\n");
      }
    }
  }else{
    int vid1 = db_lget_int("checkout", 0);
    int vid2;
  if( g.argc==2 ){
    if( undo_available!=2 ){
      fossil_fatal("no undone update or merge operation is available to redo");
    }
    undo_all(1);
    db_lset_int("undo_available", 1);
  }else if( g.argc>=3 ){
    int i;
    if( undo_available==0 ){
      fossil_fatal("no update or merge operation is available to redo");
    }
    for(i=2; i<g.argc; i++){
      const char *zFile = g.argv[i];
      Blob path;
      file_tree_name(zFile, &path, 1);
      undo_one(blob_str(&path), 0);
      blob_reset(&path);
    if( g.argc==2 ){
      if( undo_available!=(1+isRedo) ){
        fossil_fatal("nothing to %s", zCmd);
      }
      undo_all(isRedo);
      db_lset_int("undo_available", 2-isRedo);
    }else if( g.argc>=3 ){
      int i;
      if( undo_available==0 ){
        fossil_fatal("nothing to %s", zCmd);
      }
      for(i=2; i<g.argc; i++){
        const char *zFile = g.argv[i];
        Blob path;
        file_tree_name(zFile, &path, 0, 1);
        undo_one(blob_str(&path), isRedo);
        blob_reset(&path);
      }
    }
    vid2 = db_lget_int("checkout", 0);
    if( vid1!=vid2 ){
      fossil_print("--------------------\n");
      show_common_info(vid2, "updated-to:", 1, 0);
    }
  }
  db_end_transaction(0);
}
Added src/unicode.c.

















































































































































































































































































































































































































































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/*
** Copyright (c) 2013 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file is copied from ext/fts5/fts5_unicode2.c of SQLite3 with
** minor changes.
*/
#include "config.h"
#include "unicode.h"

/*
** Return true if the argument corresponds to a unicode codepoint
** classified as either a letter or a number. Otherwise false.
**
** The results are undefined if the value passed to this function
** is less than zero.
*/
int unicode_isalnum(int c){
  /* Each unsigned integer in the following array corresponds to a contiguous
  ** range of unicode codepoints that are not either letters or numbers (i.e.
  ** codepoints for which this function should return 0).
  **
  ** The most significant 22 bits in each 32-bit value contain the first
  ** codepoint in the range. The least significant 10 bits are used to store
  ** the size of the range (always at least 1). In other words, the value
  ** ((C<<22) + N) represents a range of N codepoints starting with codepoint
  ** C. It is not possible to represent a range larger than 1023 codepoints
  ** using this format.
  */
  static const unsigned int aEntry[] = {
    0x00000030, 0x0000E807, 0x00016C06, 0x0001EC2F, 0x0002AC07,
    0x0002D001, 0x0002D803, 0x0002EC01, 0x0002FC01, 0x00035C01,
    0x0003DC01, 0x000B0804, 0x000B480E, 0x000B9407, 0x000BB401,
    0x000BBC81, 0x000DD401, 0x000DF801, 0x000E1002, 0x000E1C01,
    0x000FD801, 0x00120808, 0x00156806, 0x00162402, 0x00163403,
    0x00164437, 0x0017CC02, 0x0018001D, 0x00187802, 0x00192C15,
    0x0019A804, 0x0019C001, 0x001B5001, 0x001B580F, 0x001B9C07,
    0x001BF402, 0x001C000E, 0x001C3C01, 0x001C4401, 0x001CC01B,
    0x001E980B, 0x001FAC09, 0x001FD804, 0x001FF403, 0x00205804,
    0x00206C09, 0x00209403, 0x0020A405, 0x0020C00F, 0x00216403,
    0x00217801, 0x00234C31, 0x0024E803, 0x0024F812, 0x00254407,
    0x00258804, 0x0025C001, 0x00260403, 0x0026F001, 0x0026F807,
    0x00271C02, 0x00272C03, 0x00275C01, 0x00278802, 0x0027C802,
    0x0027E802, 0x0027F402, 0x00280403, 0x0028F001, 0x0028F805,
    0x00291C02, 0x00292C03, 0x00294401, 0x0029C002, 0x0029D402,
    0x002A0403, 0x002AF001, 0x002AF808, 0x002B1C03, 0x002B2C03,
    0x002B8802, 0x002BC002, 0x002BE806, 0x002C0403, 0x002CF001,
    0x002CF807, 0x002D1C02, 0x002D2C03, 0x002D5403, 0x002D8802,
    0x002DC001, 0x002E0801, 0x002EF805, 0x002F1803, 0x002F2804,
    0x002F5C01, 0x002FCC08, 0x00300005, 0x0030F807, 0x00311803,
    0x00312804, 0x00315402, 0x00318802, 0x0031DC01, 0x0031FC01,
    0x00320404, 0x0032F001, 0x0032F807, 0x00331803, 0x00332804,
    0x00335402, 0x00338802, 0x00340004, 0x0034EC02, 0x0034F807,
    0x00351803, 0x00352804, 0x00353C01, 0x00355C01, 0x00358802,
    0x0035E401, 0x00360403, 0x00372801, 0x00373C06, 0x00375801,
    0x00376008, 0x0037C803, 0x0038C401, 0x0038D007, 0x0038FC01,
    0x00391C09, 0x00396802, 0x003AC401, 0x003AD009, 0x003B2006,
    0x003C041F, 0x003CD00C, 0x003DC417, 0x003E340B, 0x003E6424,
    0x003EF80F, 0x003F380D, 0x0040AC14, 0x00412806, 0x00415804,
    0x00417803, 0x00418803, 0x00419C07, 0x0041C404, 0x0042080C,
    0x00423C01, 0x00426806, 0x0043EC01, 0x004D740C, 0x004E400A,
    0x00500001, 0x0059B402, 0x005A0001, 0x005A6C02, 0x005BAC03,
    0x005C4803, 0x005CC805, 0x005D4802, 0x005DC802, 0x005ED023,
    0x005F6004, 0x005F7401, 0x0060000F, 0x00621402, 0x0062A401,
    0x0064800C, 0x0064C00C, 0x00650001, 0x00651002, 0x00677822,
    0x00685C05, 0x00687802, 0x0069540A, 0x0069801D, 0x0069FC01,
    0x006A8007, 0x006AA006, 0x006AC011, 0x006C0005, 0x006CD011,
    0x006D6823, 0x006E0003, 0x006E840D, 0x006F980E, 0x006FF004,
    0x00709014, 0x0070EC05, 0x0071F802, 0x00730008, 0x00734019,
    0x0073B401, 0x0073D001, 0x0073DC03, 0x0077003A, 0x0077EC05,
    0x007EF401, 0x007EFC03, 0x007F3403, 0x007F7403, 0x007FB403,
    0x007FF402, 0x00800065, 0x0081980A, 0x0081E805, 0x00822805,
    0x00828020, 0x00834021, 0x00840002, 0x00840C04, 0x00842002,
    0x00845001, 0x00845803, 0x00847806, 0x00849401, 0x00849C01,
    0x0084A401, 0x0084B801, 0x0084E802, 0x00850005, 0x00852804,
    0x00853C01, 0x00862802, 0x00864297, 0x0091000B, 0x0092704E,
    0x00940276, 0x009E53E0, 0x00ADD820, 0x00AE5C69, 0x00B39406,
    0x00B3BC03, 0x00B3E404, 0x00B3F802, 0x00B5C001, 0x00B5FC01,
    0x00B7804F, 0x00B8C023, 0x00BA001A, 0x00BA6C59, 0x00BC00D6,
    0x00BFC00C, 0x00C00005, 0x00C02019, 0x00C0A807, 0x00C0D802,
    0x00C0F403, 0x00C26404, 0x00C28001, 0x00C3EC01, 0x00C64002,
    0x00C6580A, 0x00C70024, 0x00C8001F, 0x00C8A81E, 0x00C94001,
    0x00C98020, 0x00CA2827, 0x00CB0140, 0x01370040, 0x02924037,
    0x0293F802, 0x02983403, 0x0299BC10, 0x029A7802, 0x029BC008,
    0x029C0017, 0x029C8002, 0x029E2402, 0x02A00801, 0x02A01801,
    0x02A02C01, 0x02A08C0A, 0x02A0D804, 0x02A1D004, 0x02A20002,
    0x02A2D012, 0x02A33802, 0x02A38012, 0x02A3E003, 0x02A3F001,
    0x02A3FC01, 0x02A4980A, 0x02A51C0D, 0x02A57C01, 0x02A60004,
    0x02A6CC1B, 0x02A77802, 0x02A79401, 0x02A8A40E, 0x02A90C01,
    0x02A93002, 0x02A97004, 0x02A9DC03, 0x02A9EC03, 0x02AAC001,
    0x02AAC803, 0x02AADC02, 0x02AAF802, 0x02AB0401, 0x02AB7802,
    0x02ABAC07, 0x02ABD402, 0x02AD6C01, 0x02ADA802, 0x02AF8C0B,
    0x03600001, 0x036DFC02, 0x036FFC02, 0x037FFC01, 0x03EC7801,
    0x03ECA401, 0x03EEC810, 0x03F4F802, 0x03F7F002, 0x03F8001A,
    0x03F88033, 0x03F95013, 0x03F9A004, 0x03FBFC01, 0x03FC040F,
    0x03FC6807, 0x03FCEC06, 0x03FD6C0B, 0x03FF8007, 0x03FFA007,
    0x03FFE405, 0x04040003, 0x0404DC09, 0x0405E411, 0x04063003,
    0x0406400D, 0x04068001, 0x0407402E, 0x040B8001, 0x040DD805,
    0x040E7C01, 0x040F4001, 0x0415BC01, 0x04215C01, 0x0421DC02,
    0x04247C01, 0x0424FC01, 0x04280403, 0x04281402, 0x04283004,
    0x0428E003, 0x0428FC01, 0x04294009, 0x0429FC01, 0x042B2001,
    0x042B9402, 0x042BC007, 0x042CE407, 0x042E6404, 0x04349004,
    0x043AAC03, 0x043D180B, 0x043D5405, 0x04400003, 0x0440E016,
    0x0441FC04, 0x0442C012, 0x04433401, 0x04440003, 0x04449C0E,
    0x04450004, 0x04451402, 0x0445CC03, 0x04460003, 0x0446CC0E,
    0x0447140B, 0x04476C01, 0x04477403, 0x0448B013, 0x044AA401,
    0x044B7C0C, 0x044C0004, 0x044CEC02, 0x044CF807, 0x044D1C02,
    0x044D2C03, 0x044D5C01, 0x044D8802, 0x044D9807, 0x044DC005,
    0x0450D412, 0x04512C05, 0x04516802, 0x04517402, 0x0452C014,
    0x04531801, 0x0456BC07, 0x0456E020, 0x04577002, 0x0458C014,
    0x0459800D, 0x045AAC0D, 0x045C740F, 0x045CF004, 0x0460B010,
    0x0464C006, 0x0464DC02, 0x0464EC04, 0x04650001, 0x04650805,
    0x04674407, 0x04676807, 0x04678801, 0x04679001, 0x0468040A,
    0x0468CC07, 0x0468EC0D, 0x0469440B, 0x046A2813, 0x046A7805,
    0x0470BC08, 0x0470E008, 0x04710405, 0x0471C002, 0x04724816,
    0x0472A40E, 0x0474C406, 0x0474E801, 0x0474F002, 0x0474FC07,
    0x04751C01, 0x04762805, 0x04764002, 0x04764C05, 0x047BCC06,
    0x047F541D, 0x047FFC01, 0x0491C005, 0x04D0C009, 0x05A9B802,
    0x05ABC006, 0x05ACC010, 0x05AD1002, 0x05BA5C04, 0x05BD3C01,
    0x05BD4437, 0x05BE3C04, 0x05BF8801, 0x05BF9001, 0x05BFC002,
    0x06F27008, 0x074000F6, 0x07440027, 0x0744A4C0, 0x07480046,
    0x074C0057, 0x075B0401, 0x075B6C01, 0x075BEC01, 0x075C5401,
    0x075CD401, 0x075D3C01, 0x075DBC01, 0x075E2401, 0x075EA401,
    0x075F0C01, 0x0760028C, 0x076A6C05, 0x076A840F, 0x07800007,
    0x07802011, 0x07806C07, 0x07808C02, 0x07809805, 0x0784C007,
    0x07853C01, 0x078BB004, 0x078BFC01, 0x07A34007, 0x07A51007,
    0x07A57802, 0x07B2B001, 0x07B2C001, 0x07B4B801, 0x07BBC002,
    0x07C0002C, 0x07C0C064, 0x07C2800F, 0x07C2C40F, 0x07C3040F,
    0x07C34425, 0x07C434A1, 0x07C7981D, 0x07C8402C, 0x07C90009,
    0x07C94002, 0x07C98006, 0x07CC03D8, 0x07DB800D, 0x07DBC00D,
    0x07DC0074, 0x07DE0059, 0x07DF800C, 0x07E0000C, 0x07E04038,
    0x07E1400A, 0x07E18028, 0x07E2401E, 0x07E2C002, 0x07E40079,
    0x07E5E852, 0x07E73487, 0x07E9800E, 0x07E9C005, 0x07E9E003,
    0x07EA0007, 0x07EA4019, 0x07EAC007, 0x07EB0003, 0x07EB4007,
    0x07EC0093, 0x07EE5037, 0x38000401, 0x38008060, 0x380400F0,
  };
  static const unsigned int aAscii[4] = {
    0xFFFFFFFF, 0xFC00FFFF, 0xF8000001, 0xF8000001,
  };

  if( (unsigned int)c<128 ){
    return ( (aAscii[c >> 5] & ((unsigned int)1 << (c & 0x001F)))==0 );
  }else if( (unsigned int)c<(1<<22) ){
    unsigned int key = (((unsigned int)c)<<10) | 0x000003FF;
    int iRes = 0;
    int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
    int iLo = 0;
    while( iHi>=iLo ){
      int iTest = (iHi + iLo) / 2;
      if( key >= aEntry[iTest] ){
        iRes = iTest;
        iLo = iTest+1;
      }else{
        iHi = iTest-1;
      }
    }
    assert( aEntry[0]<key );
    assert( key>=aEntry[iRes] );
    return (((unsigned int)c) >= ((aEntry[iRes]>>10) + (aEntry[iRes]&0x3FF)));
  }
  return 1;
}


/*
** If the argument is a codepoint corresponding to a lowercase letter
** in the ASCII range with a diacritic added, return the codepoint
** of the ASCII letter only. For example, if passed 235 - "LATIN
** SMALL LETTER E WITH DIAERESIS" - return 65 ("LATIN SMALL LETTER
** E"). The resuls of passing a codepoint that corresponds to an
** uppercase letter are undefined.
*/
static int unicode_remove_diacritic(int c, int bComplex){
  static const unsigned short aDia[] = {
        0,  1797,  1848,  1859,  1891,  1928,  1940,  1995,
     2024,  2040,  2060,  2110,  2168,  2206,  2264,  2286,
     2344,  2383,  2472,  2488,  2516,  2596,  2668,  2732,
     2782,  2842,  2894,  2954,  2984,  3000,  3028,  3336,
     3456,  3696,  3712,  3728,  3744,  3766,  3832,  3896,
     3912,  3928,  3944,  3968,  4008,  4040,  4056,  4106,
     4138,  4170,  4202,  4234,  4266,  4296,  4312,  4344,
     4408,  4424,  4442,  4472,  4488,  4504,  6148,  6198,
     6264,  6280,  6360,  6429,  6505,  6529, 61448, 61468,
    61512, 61534, 61592, 61610, 61642, 61672, 61688, 61704,
    61726, 61784, 61800, 61816, 61836, 61880, 61896, 61914,
    61948, 61998, 62062, 62122, 62154, 62184, 62200, 62218,
    62252, 62302, 62364, 62410, 62442, 62478, 62536, 62554,
    62584, 62604, 62640, 62648, 62656, 62664, 62730, 62766,
    62830, 62890, 62924, 62974, 63032, 63050, 63082, 63118,
    63182, 63242, 63274, 63310, 63368, 63390,
  };
#define HIBIT ((unsigned char)0x80)
  static const unsigned char aChar[] = {
    '\0',      'a',       'c',       'e',       'i',       'n',
    'o',       'u',       'y',       'y',       'a',       'c',
    'd',       'e',       'e',       'g',       'h',       'i',
    'j',       'k',       'l',       'n',       'o',       'r',
    's',       't',       'u',       'u',       'w',       'y',
    'z',       'o',       'u',       'a',       'i',       'o',
    'u',       'u'|HIBIT, 'a'|HIBIT, 'g',       'k',       'o',
    'o'|HIBIT, 'j',       'g',       'n',       'a'|HIBIT, 'a',
    'e',       'i',       'o',       'r',       'u',       's',
    't',       'h',       'a',       'e',       'o'|HIBIT, 'o',
    'o'|HIBIT, 'y',       '\0',      '\0',      '\0',      '\0',
    '\0',      '\0',      '\0',      '\0',      'a',       'b',
    'c'|HIBIT, 'd',       'd',       'e'|HIBIT, 'e',       'e'|HIBIT,
    'f',       'g',       'h',       'h',       'i',       'i'|HIBIT,
    'k',       'l',       'l'|HIBIT, 'l',       'm',       'n',
    'o'|HIBIT, 'p',       'r',       'r'|HIBIT, 'r',       's',
    's'|HIBIT, 't',       'u',       'u'|HIBIT, 'v',       'w',
    'w',       'x',       'y',       'z',       'h',       't',
    'w',       'y',       'a',       'a'|HIBIT, 'a'|HIBIT, 'a'|HIBIT,
    'e',       'e'|HIBIT, 'e'|HIBIT, 'i',       'o',       'o'|HIBIT,
    'o'|HIBIT, 'o'|HIBIT, 'u',       'u'|HIBIT, 'u'|HIBIT, 'y',
  };

  unsigned int key = (((unsigned int)c)<<3) | 0x00000007;
  int iRes = 0;
  int iHi = sizeof(aDia)/sizeof(aDia[0]) - 1;
  int iLo = 0;
  while( iHi>=iLo ){
    int iTest = (iHi + iLo) / 2;
    if( key >= aDia[iTest] ){
      iRes = iTest;
      iLo = iTest+1;
    }else{
      iHi = iTest-1;
    }
  }
  assert( key>=aDia[iRes] );
  if( bComplex==0 && (aChar[iRes] & 0x80) ) return c;
  return (c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c :
                                                     ((int)aChar[iRes] & 0x7F);
}


/*
** Return true if the argument interpreted as a unicode codepoint
** is a diacritical modifier character.
*/
int unicode_is_diacritic(int c){
  unsigned int mask0 = 0x08029FDF;
  unsigned int mask1 = 0x000361F8;
  if( c<768 || c>817 ) return 0;
  return (c < 768+32) ?
      (mask0 & ((unsigned int)1 << (c-768))) :
      (mask1 & ((unsigned int)1 << (c-768-32)));
}


/*
** Interpret the argument as a unicode codepoint. If the codepoint
** is an upper case character that has a lower case equivalent,
** return the codepoint corresponding to the lower case version.
** Otherwise, return a copy of the argument.
**
** The results are undefined if the value passed to this function
** is less than zero.
*/
int unicode_fold(int c, int eRemoveDiacritic){
  /* Each entry in the following array defines a rule for folding a range
  ** of codepoints to lower case. The rule applies to a range of nRange
  ** codepoints starting at codepoint iCode.
  **
  ** If the least significant bit in flags is clear, then the rule applies
  ** to all nRange codepoints (i.e. all nRange codepoints are upper case and
  ** need to be folded). Or, if it is set, then the rule only applies to
  ** every second codepoint in the range, starting with codepoint C.
  **
  ** The 7 most significant bits in flags are an index into the aiOff[]
  ** array. If a specific codepoint C does require folding, then its lower
  ** case equivalent is ((C + aiOff[flags>>1]) & 0xFFFF).
  **
  ** The contents of this array are generated by parsing the CaseFolding.txt
  ** file distributed as part of the "Unicode Character Database". See
  ** http://www.unicode.org for details.
  */
  static const struct TableEntry {
    unsigned short iCode;
    unsigned char flags;
    unsigned char nRange;
  } aEntry[] = {
    {65, 14, 26},          {181, 66, 1},          {192, 14, 23},
    {216, 14, 7},          {256, 1, 48},          {306, 1, 6},
    {313, 1, 16},          {330, 1, 46},          {376, 156, 1},
    {377, 1, 6},           {383, 144, 1},         {385, 52, 1},
    {386, 1, 4},           {390, 46, 1},          {391, 0, 1},
    {393, 44, 2},          {395, 0, 1},           {398, 34, 1},
    {399, 40, 1},          {400, 42, 1},          {401, 0, 1},
    {403, 44, 1},          {404, 48, 1},          {406, 54, 1},
    {407, 50, 1},          {408, 0, 1},           {412, 54, 1},
    {413, 56, 1},          {415, 58, 1},          {416, 1, 6},
    {422, 62, 1},          {423, 0, 1},           {425, 62, 1},
    {428, 0, 1},           {430, 62, 1},          {431, 0, 1},
    {433, 60, 2},          {435, 1, 4},           {439, 64, 1},
    {440, 0, 1},           {444, 0, 1},           {452, 2, 1},
    {453, 0, 1},           {455, 2, 1},           {456, 0, 1},
    {458, 2, 1},           {459, 1, 18},          {478, 1, 18},
    {497, 2, 1},           {498, 1, 4},           {502, 162, 1},
    {503, 174, 1},         {504, 1, 40},          {544, 150, 1},
    {546, 1, 18},          {570, 74, 1},          {571, 0, 1},
    {573, 148, 1},         {574, 72, 1},          {577, 0, 1},
    {579, 146, 1},         {580, 30, 1},          {581, 32, 1},
    {582, 1, 10},          {837, 38, 1},          {880, 1, 4},
    {886, 0, 1},           {895, 38, 1},          {902, 20, 1},
    {904, 18, 3},          {908, 28, 1},          {910, 26, 2},
    {913, 14, 17},         {931, 14, 9},          {962, 0, 1},
    {975, 4, 1},           {976, 180, 1},         {977, 182, 1},
    {981, 186, 1},         {982, 184, 1},         {984, 1, 24},
    {1008, 176, 1},        {1009, 178, 1},        {1012, 170, 1},
    {1013, 168, 1},        {1015, 0, 1},          {1017, 192, 1},
    {1018, 0, 1},          {1021, 150, 3},        {1024, 36, 16},
    {1040, 14, 32},        {1120, 1, 34},         {1162, 1, 54},
    {1216, 6, 1},          {1217, 1, 14},         {1232, 1, 96},
    {1329, 24, 38},        {4256, 70, 38},        {4295, 70, 1},
    {4301, 70, 1},         {5112, 190, 6},        {7296, 126, 1},
    {7297, 128, 1},        {7298, 130, 1},        {7299, 134, 2},
    {7301, 132, 1},        {7302, 136, 1},        {7303, 138, 1},
    {7304, 100, 1},        {7312, 142, 43},       {7357, 142, 3},
    {7680, 1, 150},        {7835, 172, 1},        {7838, 120, 1},
    {7840, 1, 96},         {7944, 190, 8},        {7960, 190, 6},
    {7976, 190, 8},        {7992, 190, 8},        {8008, 190, 6},
    {8025, 191, 8},        {8040, 190, 8},        {8072, 190, 8},
    {8088, 190, 8},        {8104, 190, 8},        {8120, 190, 2},
    {8122, 166, 2},        {8124, 188, 1},        {8126, 124, 1},
    {8136, 164, 4},        {8140, 188, 1},        {8152, 190, 2},
    {8154, 160, 2},        {8168, 190, 2},        {8170, 158, 2},
    {8172, 192, 1},        {8184, 152, 2},        {8186, 154, 2},
    {8188, 188, 1},        {8486, 122, 1},        {8490, 116, 1},
    {8491, 118, 1},        {8498, 12, 1},         {8544, 8, 16},
    {8579, 0, 1},          {9398, 10, 26},        {11264, 24, 47},
    {11360, 0, 1},         {11362, 112, 1},       {11363, 140, 1},
    {11364, 114, 1},       {11367, 1, 6},         {11373, 108, 1},
    {11374, 110, 1},       {11375, 104, 1},       {11376, 106, 1},
    {11378, 0, 1},         {11381, 0, 1},         {11390, 102, 2},
    {11392, 1, 100},       {11499, 1, 4},         {11506, 0, 1},
    {42560, 1, 46},        {42624, 1, 28},        {42786, 1, 14},
    {42802, 1, 62},        {42873, 1, 4},         {42877, 98, 1},
    {42878, 1, 10},        {42891, 0, 1},         {42893, 88, 1},
    {42896, 1, 4},         {42902, 1, 20},        {42922, 80, 1},
    {42923, 76, 1},        {42924, 78, 1},        {42925, 84, 1},
    {42926, 80, 1},        {42928, 92, 1},        {42929, 86, 1},
    {42930, 90, 1},        {42931, 68, 1},        {42932, 1, 12},
    {42946, 0, 1},         {42948, 178, 1},       {42949, 82, 1},
    {42950, 96, 1},        {42951, 1, 4},         {42997, 0, 1},
    {43888, 94, 80},       {65313, 14, 26},
  };
  static const unsigned short aiOff[] = {
   1,     2,     8,     15,    16,    26,    28,    32,
   34,    37,    38,    40,    48,    63,    64,    69,
   71,    79,    80,    116,   202,   203,   205,   206,
   207,   209,   210,   211,   213,   214,   217,   218,
   219,   775,   928,   7264,  10792, 10795, 23217, 23221,
   23228, 23229, 23231, 23254, 23256, 23275, 23278, 26672,
   30152, 30204, 35267, 54721, 54753, 54754, 54756, 54787,
   54793, 54809, 57153, 57274, 57921, 58019, 58363, 59314,
   59315, 59324, 59325, 59326, 59332, 59356, 61722, 62528,
   65268, 65341, 65373, 65406, 65408, 65410, 65415, 65424,
   65436, 65439, 65450, 65462, 65472, 65476, 65478, 65480,
   65482, 65488, 65506, 65511, 65514, 65521, 65527, 65528,
   65529,
  };

  int ret = c;

  assert( sizeof(unsigned short)==2 && sizeof(unsigned char)==1 );

  if( c<128 ){
    if( c>='A' && c<='Z' ) ret = c + ('a' - 'A');
  }else if( c<65536 ){
    const struct TableEntry *p;
    int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1;
    int iLo = 0;
    int iRes = -1;

    assert( c>aEntry[0].iCode );
    while( iHi>=iLo ){
      int iTest = (iHi + iLo) / 2;
      int cmp = (c - aEntry[iTest].iCode);
      if( cmp>=0 ){
        iRes = iTest;
        iLo = iTest+1;
      }else{
        iHi = iTest-1;
      }
    }

    assert( iRes>=0 && c>=aEntry[iRes].iCode );
    p = &aEntry[iRes];
    if( c<(p->iCode + p->nRange) && 0==(0x01 & p->flags & (p->iCode ^ c)) ){
      ret = (c + (aiOff[p->flags>>1])) & 0x0000FFFF;
      assert( ret>0 );
    }

    if( eRemoveDiacritic ){
      ret = unicode_remove_diacritic(ret, eRemoveDiacritic==2);
    }
  }

  else if( c>=66560 && c<66600 ){
    ret = c + 40;
  }
  else if( c>=66736 && c<66772 ){
    ret = c + 40;
  }
  else if( c>=68736 && c<68787 ){
    ret = c + 64;
  }
  else if( c>=71840 && c<71872 ){
    ret = c + 32;
  }
  else if( c>=93760 && c<93792 ){
    ret = c + 32;
  }
  else if( c>=125184 && c<125218 ){
    ret = c + 34;
  }

  return ret;
}
Added src/unversioned.c.





















































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2016 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to implement unversioned file interfaces.
*/
#include "config.h"
#include <assert.h>
#include <zlib.h>
#include "unversioned.h"
#include <time.h>

/*
** SQL code to implement the tables needed by the unversioned.
*/
static const char zUnversionedInit[] =
@ CREATE TABLE IF NOT EXISTS repository.unversioned(
@   uvid INTEGER PRIMARY KEY AUTOINCREMENT,  -- unique ID for this file
@   name TEXT UNIQUE,            -- Name of the uv file
@   rcvid INTEGER,               -- Where received from
@   mtime DATETIME,              -- timestamp.  Seconds since 1970.
@   hash TEXT,                   -- Content hash.  NULL if a delete marker
@   sz INTEGER,                  -- size of content after decompression
@   encoding INT,                -- 0: plaintext.  1: zlib compressed
@   content BLOB                 -- content of the file.  NULL if oversized
@ );
;

/*
** Make sure the unversioned table exists in the repository.
*/
void unversioned_schema(void){
  if( !db_table_exists("repository", "unversioned") ){
    db_multi_exec(zUnversionedInit/*works-like:""*/);
  }
}

/*
** Return a string which is the hash of the unversioned content.
** This is the hash used by repositories to compare content before
** exchanging a catalog.  So all repositories must compute this hash
** in exactly the same way.
**
** If debugFlag is set, force the value to be recomputed and write
** the text of the hashed string to stdout.
*/
const char *unversioned_content_hash(int debugFlag){
  const char *zHash = debugFlag ? 0 : db_get("uv-hash", 0);
  if( zHash ) return zHash;
  if( !db_table_exists("repository","unversioned") ){
    return "da39a3ee5e6b4b0d3255bfef95601890afd80709";
  }else{
    Stmt q;
    db_prepare(&q,
      "SELECT printf('%%s %%s %%s\n',name,datetime(mtime,'unixepoch'),hash)"
      "  FROM unversioned"
      " WHERE hash IS NOT NULL"
      " ORDER BY name"
    );
    while( db_step(&q)==SQLITE_ROW ){
      const char *z = db_column_text(&q, 0);
      if( debugFlag ) fossil_print("%s", z);
      sha1sum_step_text(z,-1);
    }
    db_finalize(&q);
    db_set("uv-hash", sha1sum_finish(0), 0);
    zHash = db_get("uv-hash",0);
  }
  return zHash;
}

/*
** Initialize pContent to be the content of an unversioned file zName.
**
** Return 0 on failures.
** Return 1 if the file is found by name.
** Return 2 if the file is found by hash.
*/
int unversioned_content(const char *zName, Blob *pContent){
  Stmt q;
  int rc = 0;
  blob_init(pContent, 0, 0);
  db_prepare(&q, "SELECT encoding, content FROM unversioned WHERE name=%Q",
                 zName);
  if( db_step(&q)==SQLITE_ROW ){
    db_column_blob(&q, 1, pContent);
    if( db_column_int(&q, 0)==1 ){
      blob_uncompress(pContent, pContent);
    }
    rc = 1;
  }
  db_finalize(&q);
  if( rc==0 && validate16(zName,-1) ){
    db_prepare(&q, "SELECT encoding, content FROM unversioned WHERE hash=%Q",
                   zName);
    if( db_step(&q)==SQLITE_ROW ){
      db_column_blob(&q, 1, pContent);
      if( db_column_int(&q, 0)==1 ){
        blob_uncompress(pContent, pContent);
      }
      rc = 2;
    }
    db_finalize(&q);
  }
  return rc;
}

/*
** Write unversioned content into the database.
*/
static void unversioned_write(
  const char *zUVFile,               /* Name of the unversioned file */
  Blob *pContent,                    /* File content */
  sqlite3_int64 mtime                /* Modification time */
){
  Stmt ins;
  Blob compressed;
  Blob hash;

  db_prepare(&ins,
    "REPLACE INTO unversioned(name,rcvid,mtime,hash,sz,encoding,content)"
    " VALUES(:name,:rcvid,:mtime,:hash,:sz,:encoding,:content)"
  );
  hname_hash(pContent, 0, &hash);
  blob_compress(pContent, &compressed);
  db_bind_text(&ins, ":name", zUVFile);
  db_bind_int(&ins, ":rcvid", g.rcvid);
  db_bind_int64(&ins, ":mtime", mtime);
  db_bind_text(&ins, ":hash", blob_str(&hash));
  db_bind_int(&ins, ":sz", blob_size(pContent));
  if( blob_size(&compressed) <= 0.8*blob_size(pContent) ){
    db_bind_int(&ins, ":encoding", 1);
    db_bind_blob(&ins, ":content", &compressed);
  }else{
    db_bind_int(&ins, ":encoding", 0);
    db_bind_blob(&ins, ":content", pContent);
  }
  db_step(&ins);
  blob_reset(&compressed);
  blob_reset(&hash);
  db_finalize(&ins);
  db_unset("uv-hash", 0);
}


/*
** Check the status of unversioned file zName.  "mtime" and "zHash" are the
** time of last change and hash of a copy of this file on a remote
** server.  Return an integer status code as follows:
**
**    0:     zName does not exist in the unversioned table.
**    1:     zName exists and should be replaced by the mtime/zHash remote.
**    2:     zName exists and is the same as zHash but has an older mtime
**    3:     zName exists and is identical to mtime/zHash in all respects.
**    4:     zName exists and is the same as zHash but has a newer mtime.
**    5:     zName exists and should override the mtime/zHash remote.
*/
int unversioned_status(
  const char *zName,
  sqlite3_int64 mtime,
  const char *zHash
){
  int iStatus = 0;
  Stmt q;
  db_prepare(&q, "SELECT mtime, hash FROM unversioned WHERE name=%Q", zName);
  if( db_step(&q)==SQLITE_ROW ){
    const char *zLocalHash = db_column_text(&q, 1);
    int hashCmp;
    sqlite3_int64 iLocalMtime = db_column_int64(&q, 0);
    int mtimeCmp = iLocalMtime<mtime ? -1 : (iLocalMtime==mtime ? 0 : +1);
    if( zLocalHash==0 ) zLocalHash = "-";
    hashCmp = strcmp(zLocalHash, zHash);
    if( hashCmp==0 ){
      iStatus = 3 + mtimeCmp;
    }else if( mtimeCmp<0 || (mtimeCmp==0 && hashCmp<0) ){
      iStatus = 1;
    }else{
      iStatus = 5;
    }
  }
  db_finalize(&q);
  return iStatus;
}

/*
** Extract command-line options for the "revert" and "sync" subcommands
*/
static int unversioned_sync_flags(unsigned syncFlags){
  if( find_option("verbose","v",0)!=0 ){
    syncFlags |= SYNC_UV_TRACE | SYNC_VERBOSE;
  }
  if( find_option("dry-run","n",0)!=0 ){
    syncFlags |= SYNC_UV_DRYRUN | SYNC_UV_TRACE | SYNC_VERBOSE;
  }
  return syncFlags;
}

/*
** Return true if the zName contains any whitespace
*/
static int contains_whitespace(const char *zName){
  while( zName[0] ){
    if( fossil_isspace(zName[0]) ) return 1;
    zName++;
  }
  return 0;
}

/*
** COMMAND: uv#
** COMMAND: unversioned
**
** Usage: %fossil unversioned SUBCOMMAND ARGS...
**    or: %fossil uv SUBCOMMAND ARGS..
**
** Unversioned files (UV-files) are artifacts that are synced and are available
** for download but which do not preserve history.  Only the most recent version
** of each UV-file is retained.  Changes to an UV-file are permanent and cannot
** be undone, so use appropriate caution with this command.
**
** Subcommands:
**
**    add FILE ...           Add or update one or more unversioned files in
**                           the local repository so that they match FILEs
**                           on disk. Changes are not pushed to other
**                           repositories until the next sync.
**
**    add FILE --as UVFILE   Add or update a single file named FILE on disk
**                           and UVFILE in the repository unversioned file
**                           namespace. This variant of the 'add' command allows
**                           the name to be different in the repository versus
**                           what appears on disk, but it only allows adding
**                           a single file at a time.
**
**    cat FILE ...           Concatenate the content of FILEs to stdout.
**
**    edit FILE              Bring up FILE in a text editor for modification.
**
**    export FILE OUTPUT     Write the content of FILE into OUTPUT on disk
**
**    list | ls              Show all unversioned files held in the local
**                           repository.
**
**                           Options:
**                              --glob PATTERN   Show only files that match
**                              --like PATTERN   Show only files that match
**                              -l               Show additional details for
**                                               files that match. Implied
**                                               when 'list' is used.
**
**    revert ?URL?           Restore the state of all unversioned files in the
**                           local repository to match the remote repository
**                           URL.
**
**                           Options:
**                              -v|--verbose     Extra diagnostic output
**                              -n|--dry-run     Show what would have happened
**
**    remove|rm|delete FILE ...
**                           Remove unversioned files from the local repository.
**                           Changes are not pushed to other repositories until
**                           the next sync.
**
**                           Options:
**                              --glob PATTERN   Remove files that match
**                              --like PATTERN   Remove files that match
**
**    sync ?URL?             Synchronize the state of all unversioned files with
**                           the remote repository URL.  The most recent version
**                           of each file is propagated to all repositories and
**                           all prior versions are permanently forgotten.
**                           The remote account requires the 'y' capability.
**
**                           Options:
**                              -v|--verbose     Extra diagnostic output
**                              -n|--dry-run     Show what would have happened
**
**    touch FILE ...         Update the TIMESTAMP on all of the listed files
**
** Options:
**   --mtime TIMESTAMP       Use TIMESTAMP instead of "now" for the "add",
**                           "edit", "remove", and "touch" subcommands.
**   -R|--repository REPO    Use REPO as the repository
*/
void unversioned_cmd(void){
  const char *zCmd;
  int nCmd;
  const char *zMtime = find_option("mtime", 0, 1);
  sqlite3_int64 mtime;
  db_find_and_open_repository(0, 0);
  unversioned_schema();
  zCmd = g.argc>=3 ? g.argv[2] : "x";
  nCmd = (int)strlen(zCmd);
  if( zMtime==0 ){
    mtime = time(0);
  }else{
    mtime = db_int(0, "SELECT strftime('%%s',%Q)", zMtime);
    if( mtime<=0 ) fossil_fatal("bad timestamp: %Q", zMtime);
  }
  if( strncmp(zCmd, "add", nCmd)==0 ){
    const char *zError = 0;
    const char *zIn;
    const char *zAs;
    Blob file;
    int i;

    zAs = find_option("as",0,1);
    verify_all_options();
    if( zAs && g.argc!=4 ) usage("add DISKFILE --as UVFILE");
    db_begin_transaction();
    content_rcvid_init("#!fossil unversioned add");
    for(i=3; i<g.argc; i++){
      zIn = zAs ? zAs : g.argv[i];
      if( zIn[0]==0 ){
        zError = "be empty string";
      }else if( zIn[0]=='/' ){
        zError = "be absolute";
      }else if ( !file_is_simple_pathname(zIn,1) ){
        zError = "contain complex paths";
      }else if( contains_whitespace(zIn) ){
        zError = "contain whitespace";
      }
      if( zError ){
        fossil_fatal("unversioned filenames may not %s: %Q", zError, zIn);
      }
      blob_init(&file,0,0);
      blob_read_from_file(&file, g.argv[i], ExtFILE);
      unversioned_write(zIn, &file, mtime);
      blob_reset(&file);
    }
    db_end_transaction(0);
  }else if( strncmp(zCmd, "cat", nCmd)==0 ){
    int i;
    verify_all_options();
    db_begin_transaction();
    for(i=3; i<g.argc; i++){
      Blob content;
      if( unversioned_content(g.argv[i], &content)!=0 ){
        blob_write_to_file(&content, "-");
      }
      blob_reset(&content);
    }
    db_end_transaction(0);
  }else if( strncmp(zCmd, "edit", nCmd)==0 ){
    const char *zEditor;    /* Name of the text-editor command */
    const char *zTFile;     /* Temporary file */
    const char *zUVFile;    /* Name of the unversioned file */
    char *zCmd;             /* Command to run the text editor */
    Blob content;           /* Content of the unversioned file */

    verify_all_options();
    if( g.argc!=4) usage("edit UVFILE");
    zUVFile = g.argv[3];
    zEditor = fossil_text_editor();
    if( zEditor==0 ){
      fossil_fatal("no text editor - set the VISUAL env variable");
    }
    zTFile = fossil_temp_filename();
    if( zTFile==0 ) fossil_fatal("cannot find a temporary filename");
    db_begin_transaction();
    content_rcvid_init("#!fossil unversioned edit");
    if( unversioned_content(zUVFile, &content)==0 ){
      fossil_fatal("no such uv-file: %Q", zUVFile);
    }
    if( looks_like_binary(&content) ){
      fossil_fatal("cannot edit binary content");
    }
#if defined(_WIN32) || defined(__CYGWIN__)
    blob_add_cr(&content);
#endif
    blob_write_to_file(&content, zTFile);
    zCmd = mprintf("%s %$", zEditor, zTFile);
    if( fossil_system(zCmd) ){
      fossil_fatal("editor aborted: %Q", zCmd);
    }
    fossil_free(zCmd);
    blob_reset(&content);
    blob_read_from_file(&content, zTFile, ExtFILE);
#if defined(_WIN32) || defined(__CYGWIN__)
    blob_to_lf_only(&content);
#endif
    file_delete(zTFile);
    if( zMtime==0 ) mtime = time(0);
    unversioned_write(zUVFile, &content, mtime);
    db_end_transaction(0);
    blob_reset(&content);
  }else if( strncmp(zCmd, "export", nCmd)==0 ){
    Blob content;
    verify_all_options();
    if( g.argc!=5 ) usage("export UVFILE OUTPUT");
    if( unversioned_content(g.argv[3], &content)==0 ){
      fossil_fatal("no such uv-file: %Q", g.argv[3]);
    }
    blob_write_to_file(&content, g.argv[4]);
    blob_reset(&content);
  }else if( strncmp(zCmd, "hash", nCmd)==0 ){  /* undocumented */
    /* Show the hash value used during uv sync */
    int debugFlag = find_option("debug",0,0)!=0;
    fossil_print("%s\n", unversioned_content_hash(debugFlag));
  }else if( strncmp(zCmd, "list", nCmd)==0 || strncmp(zCmd, "ls", nCmd)==0 ){
    Stmt q;
    int allFlag = find_option("all","a",0)!=0;
    int longFlag = find_option("l",0,0)!=0 || (nCmd>1 && zCmd[1]=='i');
    char *zPattern = sqlite3_mprintf("true");
    const char *zGlob;
    zGlob = find_option("glob",0,1);
    if( zGlob ){
      sqlite3_free(zPattern);
      zPattern = sqlite3_mprintf("(name GLOB %Q)", zGlob);
    }
    zGlob = find_option("like",0,1);
    if( zGlob ){
      sqlite3_free(zPattern);
      zPattern = sqlite3_mprintf("(name LIKE %Q)", zGlob);
    }
    verify_all_options();
    if( !longFlag ){
      if( allFlag ){
        db_prepare(&q, "SELECT name FROM unversioned WHERE %s ORDER BY name",
                   zPattern/*safe-for-%s*/);
      }else{
        db_prepare(&q, "SELECT name FROM unversioned"
                       " WHERE %s AND hash IS NOT NULL"
                       " ORDER BY name", zPattern/*safe-for-%s*/);
      }
      while( db_step(&q)==SQLITE_ROW ){
        fossil_print("%s\n", db_column_text(&q,0));
      }
    }else{
      db_prepare(&q,
        "SELECT hash, datetime(mtime,'unixepoch'), sz, length(content), name"
        "   FROM unversioned WHERE %s"
        "  ORDER BY name;", zPattern/*safe-for-%s*/
      );
      while( db_step(&q)==SQLITE_ROW ){
        const char *zHash = db_column_text(&q, 0);
        const char *zNoContent = "";
        if( zHash==0 ){
          if( !allFlag ) continue;
          zHash = "(deleted)";
        }else if( db_column_type(&q,3)==SQLITE_NULL ){
          zNoContent = " (no content)";
        }
        fossil_print("%12.12s %s %8d %8d %s%s\n",
           zHash,
           db_column_text(&q,1),
           db_column_int(&q,2),
           db_column_int(&q,3),
           db_column_text(&q,4),
           zNoContent
        );
      }
    }
    db_finalize(&q);
    sqlite3_free(zPattern);
  }else if( strncmp(zCmd, "revert", nCmd)==0 ){
    unsigned syncFlags =
        unversioned_sync_flags(SYNC_UNVERSIONED|SYNC_UV_REVERT);
    g.argv[1] = "sync";
    g.argv[2] = "--uv-noop";
    sync_unversioned(syncFlags);
  }else if( strncmp(zCmd, "remove", nCmd)==0 || strncmp(zCmd, "rm", nCmd)==0
         || strncmp(zCmd, "delete", nCmd)==0 ){
    int i;
    const char *zGlob;
    db_begin_transaction();
    while( (zGlob = find_option("glob",0,1))!=0 ){
      db_multi_exec(
        "UPDATE unversioned"
        "   SET hash=NULL, content=NULL, mtime=%lld, sz=0 WHERE name GLOB %Q",
        mtime, zGlob
      );
    }
    while( (zGlob = find_option("like",0,1))!=0 ){
      db_multi_exec(
        "UPDATE unversioned"
        "   SET hash=NULL, content=NULL, mtime=%lld, sz=0 WHERE name LIKE %Q",
        mtime, zGlob
      );
    }
    verify_all_options();
    for(i=3; i<g.argc; i++){
      db_multi_exec(
        "UPDATE unversioned"
        "   SET hash=NULL, content=NULL, mtime=%lld, sz=0 WHERE name=%Q",
        mtime, g.argv[i]
      );
    }
    db_unset("uv-hash", 0);
    db_end_transaction(0);
  }else if( strncmp(zCmd,"sync",nCmd)==0 ){
    unsigned syncFlags = unversioned_sync_flags(SYNC_UNVERSIONED);
    g.argv[1] = "sync";
    g.argv[2] = "--uv-noop";
    sync_unversioned(syncFlags);
  }else if( strncmp(zCmd, "touch", nCmd)==0 ){
    int i;
    verify_all_options();
    db_begin_transaction();
    for(i=3; i<g.argc; i++){
      db_multi_exec(
        "UPDATE unversioned SET mtime=%lld WHERE name=%Q",
        mtime, g.argv[i]
      );
    }
    db_unset("uv-hash", 0);
    db_end_transaction(0);
  }else{
    usage("add|cat|edit|export|list|revert|remove|sync|touch");
  }
}

/*
** Emit an HTML form for uploading a new unversioned file if
** the current user has WrUnver permissions, else this is
** a no-op.
**
** If this function detects that the form it emits has been submitted,
** it will add the uploaded file to the unversioned file list before
** returning.
**
** Intended only for use by /uvlist, and its form's action is that
** page.
*/
static void uvlist_upload(void){
  const char * aContent;
  if( !g.perm.WrUnver ) return;
  aContent = P("f");
  if( aContent!=0 ){
    const char * const zName = P("f:filename");
    int const nContent = atoi(PD("f:bytes","0"));
    const char * zError = 0;
    Blob content;
    if( zName[0]==0 ){
      zError = "be an empty string";
    }else if( contains_whitespace(zName) ){
      zError = "contain spaces";
    }
    if( zError ){
      fossil_fatal("Unversioned filenames may not %s: %h",
                   zError, zName);
    }
    unversioned_schema();
    db_begin_transaction();
    content_rcvid_init("#!fossil /uvlist upload");
    blob_init(&content, aContent, nContent);
    unversioned_write(zName, &content, time(0));
    blob_reset(&content);
    db_end_transaction(0);
    CX("<div>Added: %h</div>", zName);
  }
  form_begin("enctype='multipart/form-data'", "%R/uvlist");
  @ <label for='uvupload'>Upload unversioned file:</label>
  @ <input type='file' id='uvupload' name='f'/>
  @ <input type='submit' id='uvsubmit' value='Upload' disabled='disabled'/>
  @ </form>
  @ <script nonce='%h(style_nonce())'>;/* unversioned.c:%d(__LINE__) */
  @ var upl = document.getElementById('uvupload');
  @ var sbm = document.getElementById('uvsubmit');
  @ upl.onchange = function(){
  @   if (!upl.value) sbm.setAttribute('disabled', 'disabled');
  @   else sbm.removeAttribute('disabled');
  @ }  
  @ </script>
}

/*
** WEBPAGE: uvlist
**
** Display a list of all unversioned files in the repository.
** Query parameters:
**
**    byage=1          Order the initial display be decreasing age
**    showdel=0        Show deleted files
*/
void uvlist_page(void){
  Stmt q;
  sqlite3_int64 iNow;
  sqlite3_int64 iTotalSz = 0;
  int cnt = 0;
  int n = 0;
  const char *zOrderBy = "name";
  int showDel = 0;
  char zSzName[100];

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  etag_check(ETAG_DATA,0);
  style_header("Unversioned Files");
  uvlist_upload();
  if( !db_table_exists("repository","unversioned") ){
    @ No unversioned files on this server
    style_finish_page();
    return;
  }
  if( PB("byage") ) zOrderBy = "mtime DESC";
  if( PB("showdel") ) showDel = 1;
  db_prepare(&q,
    "SELECT"
    "   name,"
    "   mtime,"
    "   hash,"
    "   sz,"
    "   (SELECT login FROM rcvfrom, user"
    "     WHERE user.uid=rcvfrom.uid AND rcvfrom.rcvid=unversioned.rcvid),"
    "   rcvid"
    " FROM unversioned %s ORDER BY %s",
    showDel ? "" : "WHERE hash IS NOT NULL" /*safe-for-%s*/,
    zOrderBy/*safe-for-%s*/
  );
  iNow = db_int64(0, "SELECT strftime('%%s','now');");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    sqlite3_int64 mtime = db_column_int(&q, 1);
    const char *zHash = db_column_text(&q, 2);
    int isDeleted = zHash==0;
    const char *zAlgo;
    int fullSize = db_column_int(&q, 3);
    char *zAge = human_readable_age((iNow - mtime)/86400.0);
    const char *zLogin = db_column_text(&q, 4);
    int rcvid = db_column_int(&q,5);
    if( isDeleted ) zAlgo = "deleted";
    else zAlgo = hname_alg(strlen(zHash));
    if( zLogin==0 ) zLogin = "";
    if( (n++)==0 ){
      style_table_sorter();
      @ <div class="uvlist">
      @ <table cellpadding="2" cellspacing="0" border="1" class='sortable' \
      @  data-column-types='tkKttn' data-init-sort='1'>
      @ <thead><tr>
      @   <th> Name
      @   <th> Age
      @   <th> Size
      @   <th> User
      @   <th> Hash
      @   <th> Algo
      if( g.perm.Admin ){
        @ <th> rcvid
      }
      @ </tr></thead>
      @ <tbody>
    }
    @ <tr>
    if( isDeleted ){
      sqlite3_snprintf(sizeof(zSzName), zSzName, "<i>Deleted</i>");
      zHash = "";
      fullSize = 0;
      @ <td> %h(zName) </td>
    }else{
      approxSizeName(sizeof(zSzName), zSzName, fullSize);
      iTotalSz += fullSize;
      cnt++;
      @ <td> <a href='%R/uv/%T(zName)'>%h(zName)</a> </td>
    }
    @ <td data-sortkey='%016llx(-mtime)'> %s(zAge) </td>
    @ <td data-sortkey='%08x(fullSize)'> %s(zSzName) </td>
    @ <td> %h(zLogin) </td>
    @ <td><code> %h(zHash) </code></td>
    @ <td> %s(zAlgo) </td>
    if( g.perm.Admin ){
      if( rcvid ){
        @ <td> <a href="%R/rcvfrom?rcvid=%d(rcvid)">%d(rcvid)</a>
      }else{
        @ <td>
      }
    }
    @ </tr>
    fossil_free(zAge);
  }
  db_finalize(&q);
  if( n ){
    approxSizeName(sizeof(zSzName), zSzName, iTotalSz);
    @ </tbody>
    @ <tfoot><tr><td><b>Total for %d(cnt) files</b><td><td>%s(zSzName)
    @ <td><td>
    if( g.perm.Admin ){
      @ <td>
    }
    @ <td>
    @ </tfoot>
    @ </table></div>
  }else{
    @ No unversioned files on this server.
  }
  style_finish_page();
}

/*
** WEBPAGE: juvlist
**
** Return a complete list of unversioned files as JSON.  The JSON
** looks like this:
**
** [{"name":NAME,
**   "mtime":MTIME,
**   "hash":HASH,
**   "size":SIZE,
**   "user":USER}]
*/
void uvlist_json_page(void){
  Stmt q;
  char *zSep = "[";
  Blob json;

  login_check_credentials();
  if( !g.perm.Read ){ login_needed(g.anon.Read); return; }
  cgi_check_for_malice();
  cgi_set_content_type("application/json");
  etag_check(ETAG_DATA,0);
  if( !db_table_exists("repository","unversioned") ){
    blob_init(&json, "[]", -1);
    cgi_set_content(&json);
    return;
  }
  blob_init(&json, 0, 0);
  db_prepare(&q,
     "SELECT"
     "   name,"
     "   mtime,"
     "   hash,"
     "   sz,"
     "   (SELECT login FROM rcvfrom, user"
     "     WHERE user.uid=rcvfrom.uid AND rcvfrom.rcvid=unversioned.rcvid)"
     " FROM unversioned WHERE hash IS NOT NULL"
   );
   while( db_step(&q)==SQLITE_ROW ){
     const char *zName = db_column_text(&q, 0);
     sqlite3_int64 mtime = db_column_int(&q, 1);
     const char *zHash = db_column_text(&q, 2);
     int fullSize = db_column_int(&q, 3);
     const char *zLogin = db_column_text(&q, 4);
     if( zLogin==0 ) zLogin = "";
     blob_appendf(&json, "%s{\"name\":\"%j\",\n", zSep, zName);
     zSep = ",\n ";
     blob_appendf(&json, "  \"mtime\":%lld,\n", mtime);
     blob_appendf(&json, "  \"hash\":\"%j\",\n", zHash);
     blob_appendf(&json, "  \"size\":%d,\n", fullSize);
     blob_appendf(&json, "  \"user\":\"%j\"}", zLogin);
   }
   db_finalize(&q);
   blob_appendf(&json,"]\n");
   cgi_set_content(&json);
}
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** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to merge the changes in the current
** checkout into a different version and switch to that version.
** check-out into a different version and switch to that version.
*/
#include "config.h"
#include "update.h"
#include <assert.h>

/*
** Return true if artifact rid is a version
*/
int is_a_version(int rid){
  return db_exists("SELECT 1 FROM plink WHERE cid=%d", rid);
  return db_exists("SELECT 1 FROM event WHERE objid=%d AND type='ci'", rid);
}

/* This variable is set if we are doing an internal update.  It is clear
** when running the "update" command.
*/
static int internalUpdate = 0;
static int internalConflictCnt = 0;

/*
** Do an update to version vid.
**
** Start an undo session but do not terminate it.  Do not autosync.
*/
int update_to(int vid){
  int savedArgc;
  char **savedArgv;
  char *newArgv[3];
  newArgv[0] = g.argv[0];
  newArgv[1] = "update";
  newArgv[2] = 0;
  savedArgv = g.argv;
  savedArgc = g.argc;
  g.argc = 2;
  g.argv = newArgv;
  internalUpdate = vid;
  internalConflictCnt = 0;
  update_cmd();
  g.argc = savedArgc;
  g.argv = savedArgv;
  return internalConflictCnt;
}

/*
** COMMAND: update
**
** Usage: %fossil update ?VERSION? ?FILES...?
** Usage: %fossil update ?OPTIONS? ?VERSION? ?FILES...?
**
** Change the version of the current checkout to VERSION.  Any uncommitted
** changes are retained and applied to the new checkout.
** Change the version of the current check-out to VERSION.  Any
** uncommitted changes are retained and applied to the new check-out.
**
** The VERSION argument can be a specific version or tag or branch name.
** If the VERSION argument is omitted, then the leaf of the the subtree
** that begins at the current version is used, if there is only a single
** leaf.  VERSION can also be "current" to select the leaf of the current
** version or "latest" to select the most recent check-in.
** The VERSION argument can be a specific version or tag or branch
** name.  If the VERSION argument is omitted, then the leaf of the
** subtree that begins at the current version is used, if there is
** only a single leaf.  VERSION can also be "current" to select the
** leaf of the current version or "latest" to select the most recent
** check-in.
**
** If one or more FILES are listed after the VERSION then only the
** named files are candidates to be updated.  If FILES is omitted, all
** files in the current checkout are subject to be updated.
** named files are candidates to be updated, and any updates to them
** will be treated as edits to the current version. Using a directory
** name for one of the FILES arguments is the same as using every
** subdirectory and file beneath that directory.
**
** If FILES is omitted, all files in the current check-out are subject
** to being updated and the version of the current check-out is changed
** to VERSION. Any uncommitted changes are retained and applied to the
** new check-out.
**
** The -n or --nochange option causes this command to do a "dry run".  It
** prints out what would have happened but does not actually make any
** changes to the current checkout or the repository.
** The -n or --dry-run option causes this command to do a "dry run".
** It prints out what would have happened but does not actually make
** any changes to the current check-out or the repository.
**
** The -v or --verbose option prints status information about unchanged
** files in addition to those file that actually do change.
** The -v or --verbose option prints status information about
** unchanged files in addition to those file that actually do change.
**
** Options:
**   --case-sensitive BOOL   Override case-sensitive setting
**   --debug                 Print debug information on stdout
**   -n|--dry-run            If given, display instead of run actions
**   --force-missing         Force update if missing content after sync
**   -K|--keep-merge-files   On merge conflict, retain the temporary files
**                           used for merging, named *-baseline, *-original,
**                           and *-merge.
**   --latest                Acceptable in place of VERSION, update to
**                           latest version
**   --nosync                Do not auto-sync prior to update
**   --setmtime              Set timestamps of all files to match their
**                           SCM-side times (the timestamp of the last
**                           check-in which modified them).
**   -v|--verbose            Print status information about all files
**   -W|--width WIDTH        Width of lines (default is to auto-detect).
**                           Must be more than 20 or 0 (= no limit,
**                           resulting in a single line per entry).
**
** See also: [[revert]]
*/
void update_cmd(void){
  int vid;              /* Current version */
  int tid=0;            /* Target version - version we are changing to */
  Stmt q;
  int latestFlag;       /* --latest.  Pick the latest version if true */
  int nochangeFlag;     /* -n or --nochange.  Do a dry run */
  int dryRunFlag;       /* -n or --dry-run.  Do a dry run */
  int verboseFlag;      /* -v or --verbose.  Output extra information */
  int forceMissingFlag; /* --force-missing.  Continue if missing content */
  int debugFlag;        /* --debug option */
  int setmtimeFlag;     /* --setmtime.  Set mtimes on files */
  int keepMergeFlag;    /* True if --keep-merge-files is present */
  int nChng;            /* Number of file renames */
  int *aChng;           /* Array of file renames */
  int i;                /* Loop counter */
  int nConflict = 0;    /* Number of merge conflicts */
  int nOverwrite = 0;   /* Number of unmanaged files overwritten */
  int nUpdate = 0;      /* Number of changes of any kind */
  int bNosync = 0;      /* --nosync.  Omit the auto-sync */
  int width;            /* Width of printed comment lines */
  Stmt mtimeXfer;       /* Statement to transfer mtimes */
  const char *zWidth;   /* Width option string value */

  if( !internalUpdate ){
    undo_capture_command_line();
  url_proxy_options();
    url_proxy_options();
  }
  zWidth = find_option("width","W",1);
  if( zWidth ){
    width = atoi(zWidth);
    if( (width!=0) && (width<=20) ){
      fossil_fatal("-W|--width value must be >20 or 0");
    }
  }else{
    width = -1;
  }
  latestFlag = find_option("latest",0, 0)!=0;
  dryRunFlag = find_option("dry-run","n",0)!=0;
  if( !dryRunFlag ){
  nochangeFlag = find_option("nochange","n",0)!=0;
    dryRunFlag = find_option("nochange",0,0)!=0; /* deprecated */
  }
  verboseFlag = find_option("verbose","v",0)!=0;
  forceMissingFlag = find_option("force-missing",0,0)!=0;
  debugFlag = find_option("debug",0,0)!=0;
  setmtimeFlag = find_option("setmtime",0,0)!=0;
  keepMergeFlag = find_option("keep-merge-files", "K",0)!=0;
  bNosync = find_option("nosync",0,0)!=0;

  /* We should be done with options.. */
  verify_all_options();

  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  user_select();
  if( vid==0 ){
    fossil_fatal("cannot find current version");
  }
  if( !dryRunFlag && !internalUpdate && !bNosync ){
    if( autosync_loop(SYNC_PULL + SYNC_VERBOSE*verboseFlag, 1, "update") ){
      fossil_fatal("update abandoned due to sync failure");
    }
  if( db_exists("SELECT 1 FROM vmerge") ){
    fossil_fatal("cannot update an uncommitted merge");
  }
  if( !nochangeFlag ) autosync(AUTOSYNC_PULL);

  /* Create any empty directories now, as well as after the update,
  ** so changes in settings are reflected now */
  if( !dryRunFlag ) ensure_empty_dirs_created(0);

  if( internalUpdate ){
    tid = internalUpdate;
  if( g.argc>=3 ){
    if( strcmp(g.argv[2], "current")==0 ){
  }else if( g.argc>=3 ){
    if( fossil_strcmp(g.argv[2], "current")==0 ){
      /* If VERSION is "current", then use the same algorithm to find the
      ** target as if VERSION were omitted. */
    }else if( strcmp(g.argv[2], "latest")==0 ){
    }else if( fossil_strcmp(g.argv[2], "latest")==0 ){
      /* If VERSION is "latest", then use the same algorithm to find the
      ** target as if VERSION were omitted and the --latest flag is present.
      */
      latestFlag = 1;
    }else{
      tid = name_to_rid(g.argv[2]);
      if( tid==0 ){
        fossil_fatal("no such version: %s", g.argv[2]);
      tid = name_to_typed_rid(g.argv[2],"ci");
       if( tid==0 || !is_a_version(tid) ){
        fossil_fatal("no such check-in: %s", g.argv[2]);
      }else if( !is_a_version(tid) ){
        fossil_fatal("no such version: %s", g.argv[2]);
      }
    }
  }
  

  /* If no VERSION is specified on the command-line, then look for a
  ** descendent of the current version.  If there are multiple descendants,
  ** look for one from the same branch as the current version.  If there
  ** are still multiple descendants, show them all and refuse to update
  ** until the user selects one.
  */
  if( tid==0 ){
    int closeCode = 1;
    compute_leaves(vid, 1);
    compute_leaves(vid, closeCode);
    if( !db_exists("SELECT 1 FROM leaves") ){
      closeCode = 0;
      compute_leaves(vid, closeCode);
    }
    if( !latestFlag && db_int(0, "SELECT count(*) FROM leaves")>1 ){
      db_multi_exec(
        "DELETE FROM leaves WHERE rid NOT IN"
        "   (SELECT leaves.rid FROM leaves, tagxref"
        "     WHERE leaves.rid=tagxref.rid AND tagxref.tagid=%d"
        "       AND tagxref.value==(SELECT value FROM tagxref"
                                   " WHERE tagid=%d AND rid=%d))",
        TAG_BRANCH, TAG_BRANCH, vid
      );
      if( db_int(0, "SELECT count(*) FROM leaves")>1 ){
        compute_leaves(vid, closeCode);
      db_prepare(&q, 
        "%s "
        "   AND event.objid IN leaves"
        " ORDER BY event.mtime DESC",
        timeline_query_for_tty()
      );
      print_timeline(&q, 100);
      db_finalize(&q);
      fossil_fatal("Multiple descendants");
        db_prepare(&q,
          "%s "
          "   AND event.objid IN leaves"
          " ORDER BY event.mtime DESC",
          timeline_query_for_tty()
        );
        print_timeline(&q, -100, width, 0, 0);
        db_finalize(&q);
        fossil_fatal("Multiple descendants");
      }
    }
    tid = db_int(0, "SELECT rid FROM leaves, event"
                    " WHERE event.objid=leaves.rid"
                    " ORDER BY event.mtime DESC"); 
                    " ORDER BY event.mtime DESC");
    if( tid==0 ) tid = vid;
  }

  if( tid==0 ){
    return;
  }

  db_begin_transaction();
  db_multi_exec(
     "CREATE TEMP TABLE dir_to_delete(name TEXT %s PRIMARY KEY)WITHOUT ROWID",
     filename_collation()
  );
  vfile_check_signature(vid, 1);
  if( !nochangeFlag ) undo_begin();
  load_vfile_from_rid(tid);
  vfile_check_signature(vid, CKSIG_ENOTFILE);
  if( !dryRunFlag && !internalUpdate ) undo_begin();
  if( load_vfile_from_rid(tid) && !forceMissingFlag ){
    fossil_fatal("missing content, unable to update");
  };

  /*
  ** The record.fn field is used to match files against each other.  The
  ** FV table contains one row for each each unique filename in
  ** in the current checkout, the pivot, and the version being merged.
  ** in the current check-out, the pivot, and the version being merged.
  */
  db_multi_exec(
    "DROP TABLE IF EXISTS fv;"
    "CREATE TEMP TABLE fv("
    "  fn TEXT PRIMARY KEY,"      /* The filename relative to root */
    "  fn TEXT %s PRIMARY KEY,"   /* The filename relative to root */
    "  idv INTEGER,"              /* VFILE entry for current version */
    "  idt INTEGER,"              /* VFILE entry for target version */
    "  chnged BOOLEAN,"           /* True if current version has been edited */
    "  islinkv BOOLEAN,"          /* True if current file is a link */
    "  islinkt BOOLEAN,"          /* True if target file is a link */
    "  ridv INTEGER,"             /* Record ID for current version */
    "  ridt INTEGER "             /* Record ID for target */
    ");"
    "  ridt INTEGER,"             /* Record ID for target */
    "  isexe BOOLEAN,"            /* Does target have execute permission? */
    "  deleted BOOLEAN DEFAULT 0,"/* File marked by "rm" to become unmanaged */
    "  fnt TEXT %s"               /* Filename of same file on target version */
    ");",
    "INSERT OR IGNORE INTO fv"
    " SELECT pathname, 0, 0, 0, 0, 0 FROM vfile"
    filename_collation(), filename_collation()
  );
  db_prepare(&q,
    "SELECT id, pathname, rid FROM vfile"
    " WHERE vid=%d", tid

  /* Add files found in the current version
  */
  db_multi_exec(
    "INSERT OR IGNORE INTO fv(fn,fnt,idv,idt,ridv,ridt,isexe,chnged,deleted)"
    " SELECT pathname, pathname, id, 0, rid, 0, isexe, chnged, deleted"
    "   FROM vfile WHERE vid=%d",
    vid
  );
  while( db_step(&q)==SQLITE_ROW ){

    int id = db_column_int(&q, 0);
    const char *fn = db_column_text(&q, 1);
    int rid = db_column_int(&q, 2);
    db_multi_exec(
      "UPDATE fv SET idt=%d, ridt=%d WHERE fn=%Q",
      id, rid, fn
    );
  }
  db_finalize(&q);
  db_prepare(&q,
    "SELECT id, pathname, rid, chnged FROM vfile"
    " WHERE vid=%d", vid
  /* Compute file name changes on V->T.  Record name changes in files that
  ** have changed locally.
  */
  if( vid ){
    find_filename_changes(vid, tid, 1, &nChng, &aChng, debugFlag ? "V->T": 0);
    if( nChng ){
      for(i=0; i<nChng; i++){
        db_multi_exec(
          "UPDATE fv"
          "   SET fnt=(SELECT name FROM filename WHERE fnid=%d)"
          " WHERE fn=(SELECT name FROM filename WHERE fnid=%d) AND chnged",
          aChng[i*2+1], aChng[i*2]
        );
      }
      fossil_free(aChng);
    }
  }

  /* Add files found in the target version T but missing from the current
  ** version V.
  */
  db_multi_exec(
    "INSERT OR IGNORE INTO fv(fn,fnt,idv,idt,ridv,ridt,isexe,chnged)"
    " SELECT pathname, pathname, 0, 0, 0, 0, isexe, 0 FROM vfile"
    "  WHERE vid=%d"
    "    AND pathname %s NOT IN (SELECT fnt FROM fv)",
    tid, filename_collation()
  );

  /*
  ** Compute the file version ids for T
  */
  db_multi_exec(
    "UPDATE fv SET"
    " idt=coalesce((SELECT id FROM vfile WHERE vid=%d AND fnt=pathname),0),"
    " ridt=coalesce((SELECT rid FROM vfile WHERE vid=%d AND fnt=pathname),0)",
    tid, tid
  );

  /*
  ** Add islink information
  */
  db_multi_exec(
    "UPDATE fv SET"
    " islinkv=coalesce((SELECT islink FROM vfile"
                       " WHERE vid=%d AND fnt=pathname),0),"
    " islinkt=coalesce((SELECT islink FROM vfile"
                       " WHERE vid=%d AND fnt=pathname),0)",
    vid, tid
  );


  if( debugFlag ){
    db_prepare(&q,
       "SELECT rowid, fn, fnt, chnged, ridv, ridt, isexe,"
       "       islinkv, islinkt FROM fv"
    );
  while( db_step(&q)==SQLITE_ROW ){
    int id = db_column_int(&q, 0);
    const char *fn = db_column_text(&q, 1);
    int rid = db_column_int(&q, 2);
    int chnged = db_column_int(&q, 3);
    db_multi_exec(
    while( db_step(&q)==SQLITE_ROW ){
       fossil_print("%3d: ridv=%-4d ridt=%-4d chnged=%d isexe=%d"
                    " islinkv=%d  islinkt=%d\n",
          db_column_int(&q, 0),
          db_column_int(&q, 4),
          db_column_int(&q, 5),
          db_column_int(&q, 3),
          db_column_int(&q, 6),
      "UPDATE fv SET idv=%d, ridv=%d, chnged=%d WHERE fn=%Q",
      id, rid, chnged, fn
          db_column_int(&q, 7),
    );
  }
  db_finalize(&q);
          db_column_int(&q, 8));
       fossil_print("     fnv = [%s]\n", db_column_text(&q, 1));
       fossil_print("     fnt = [%s]\n", db_column_text(&q, 2));
    }
    db_finalize(&q);
  }

  /* If FILES appear on the command-line, remove from the "fv" table
  ** every entry that is not named on the command-line.
  ** every entry that is not named on the command-line or which is not
  ** in a directory named on the command-line.
  */
  if( g.argc>=4 ){
    Blob sql;              /* SQL statement to purge unwanted entries */
    char *zSep = "(";      /* Separator in the list of filenames */
    Blob treename;         /* Normalized filename */
    int i;                 /* Loop counter */
    const char *zSep;      /* Term separator */

    blob_zero(&sql);
    blob_append(&sql, "DELETE FROM fv WHERE fn NOT IN ", -1);
    blob_append(&sql, "DELETE FROM fv WHERE ", -1);
    zSep = "";
    for(i=3; i<g.argc; i++){
      file_tree_name(g.argv[i], &treename, 1);
      blob_appendf(&sql, "%s'%q'", zSep, blob_str(&treename));
      blob_reset(&treename);
      zSep = ",";
      file_tree_name(g.argv[i], &treename, 0, 1);
      if( file_isdir(g.argv[i], RepoFILE)==1 ){
        if( blob_size(&treename) != 1 || blob_str(&treename)[0] != '.' ){
          blob_append_sql(&sql, "%sfn NOT GLOB '%q/*' ",
                         zSep /*safe-for-%s*/, blob_str(&treename));
        }else{
          blob_reset(&sql);
          break;
        }
      }else{
        blob_append_sql(&sql, "%sfn<>%Q ",
                        zSep /*safe-for-%s*/, blob_str(&treename));
      }
      zSep = "AND ";
      blob_reset(&treename);
    }
    blob_append(&sql, ")", -1);
    db_multi_exec(blob_str(&sql));
    db_multi_exec("%s", blob_sql_text(&sql));
    blob_reset(&sql);
  }

  /*
  ** Alter the content of the check-out so that it conforms with the
  ** target
  */
  db_prepare(&q, 
    "SELECT fn, idv, ridv, idt, ridt, chnged FROM fv ORDER BY 1"
  db_prepare(&q,
    "SELECT fn, idv, ridv, idt, ridt, chnged, fnt,"
    "       isexe, islinkv, islinkt, deleted FROM fv ORDER BY 1"
  );
  db_prepare(&mtimeXfer,
    "UPDATE vfile SET mtime=(SELECT mtime FROM vfile WHERE id=:idv)"
    " WHERE id=:idt"
  );
  assert( g.zLocalRoot!=0 );
  assert( strlen(g.zLocalRoot)>1 );
  assert( strlen(g.zLocalRoot)>0 );
  assert( g.zLocalRoot[strlen(g.zLocalRoot)-1]=='/' );
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);  /* The filename from root */
    int idv = db_column_int(&q, 1);             /* VFILE entry for current */
    int ridv = db_column_int(&q, 2);            /* RecordID for current */
    int idt = db_column_int(&q, 3);             /* VFILE entry for target */
    int ridt = db_column_int(&q, 4);            /* RecordID for target */
    int chnged = db_column_int(&q, 5);          /* Current is edited */
    const char *zNewName = db_column_text(&q,6);/* New filename */
    int isexe = db_column_int(&q, 7);           /* EXE perm for new file */
    int islinkv = db_column_int(&q, 8);         /* Is current file is a link */
    int islinkt = db_column_int(&q, 9);         /* Is target file is a link */
    int deleted = db_column_int(&q, 10);        /* Marked for deletion */
    char *zFullPath;                            /* Full pathname of the file */
    char *zFullNewPath;                         /* Full pathname of dest */
    char nameChng;                              /* True if the name changed */

    zFullPath = mprintf("%s%s", g.zLocalRoot, zName);
    zFullNewPath = mprintf("%s%s", g.zLocalRoot, zNewName);
    nameChng = fossil_strcmp(zName, zNewName);
    nUpdate++;
    if( deleted ){
      db_multi_exec("UPDATE vfile SET deleted=1 WHERE id=%d", idt);
    }
    if( idv>0 && ridv==0 && idt>0 && ridt>0 ){
      /* Conflict.  This file has been added to the current checkout
      ** but also exists in the target checkout.  Use the current version.
      /* Conflict.  This file has been added to the current check-out
      ** but also exists in the target check-out.  Use the current version.
      */
      printf("CONFLICT %s\n", zName);
      fossil_print("CONFLICT %s\n", zName);
      nConflict++;
    }else if( idt>0 && idv==0 ){
      /* File added in the target. */
      if( file_isfile_or_link(zFullPath) ){
        /* Name of backup file with Original content */
        char *zOrig = file_newname(zFullPath, "original", 1);
        /* Backup previously unanaged file before to be overwritten */
        file_copy(zFullPath, zOrig);
        fossil_free(zOrig);
        fossil_print("ADD %s - overwrites an unmanaged file", zName);
        if( !dryRunFlag ) fossil_print(", original copy backed up locally");
        fossil_print("\n");
        nOverwrite++;
      }else{
      printf("ADD %s\n", zName);
      undo_save(zName);
      if( !nochangeFlag ) vfile_to_disk(0, idt, 0);
    }else if( idt>0 && idv>0 && ridt!=ridv && chnged==0 ){
        fossil_print("ADD %s\n", zName);
      }
      if( !dryRunFlag && !internalUpdate ) undo_save(zName);
      if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
    }else if( idt>0 && idv>0 && ridt!=ridv && (chnged==0 || deleted) ){
      /* The file is unedited.  Change it to the target version */
      if( deleted ){
        fossil_print("UPDATE %s - change to unmanaged file\n", zName);
      }else{
      printf("UPDATE %s\n", zName);
      undo_save(zName);
      if( !nochangeFlag ) vfile_to_disk(0, idt, 0);
    }else if( idt>0 && idv>0 && file_size(zFullPath)<0 ){
        fossil_print("UPDATE %s\n", zName);
      }
      if( !dryRunFlag && !internalUpdate ) undo_save(zName);
      if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
    }else if( idt>0 && idv>0 && !deleted && file_size(zFullPath, RepoFILE)<0 ){
      /* The file missing from the local check-out. Restore it to the
      ** version that appears in the target. */
      printf("UPDATE %s\n", zName);
      undo_save(zName);
      if( !nochangeFlag ) vfile_to_disk(0, idt, 0);
      fossil_print("UPDATE %s\n", zName);
      if( !dryRunFlag && !internalUpdate ) undo_save(zName);
      if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
    }else if( idt==0 && idv>0 ){
      if( ridv==0 ){
        /* Added in current checkout.  Continue to hold the file as
        /* Added in current check-out.  Continue to hold the file as
        ** as an addition */
        db_multi_exec("UPDATE vfile SET vid=%d WHERE id=%d", tid, idv);
      }else if( chnged ){
        /* Edited locally but deleted from the target.  Delete it. */
        printf("CONFLICT %s\n", zName);
        /* Edited locally but deleted from the target.  Do not track the
        ** file but keep the edited version around. */
        fossil_print("CONFLICT %s - edited locally but deleted by update\n",
                     zName);
        nConflict++;
      }else{
        char *zFullPath;
        printf("REMOVE %s\n", zName);
        undo_save(zName);
        fossil_print("REMOVE %s\n", zName);
        if( !dryRunFlag && !internalUpdate ) undo_save(zName);
        zFullPath = mprintf("%s/%s", g.zLocalRoot, zName);
        if( !nochangeFlag ) unlink(zFullPath);
        free(zFullPath);
        if( !dryRunFlag ){
          char *zDir;
          file_delete(zFullPath);
          zDir = file_dirname(zName);
          while( zDir!=0 ){
            char *zNext;
            db_multi_exec("INSERT OR IGNORE INTO dir_to_delete(name)"
                          "VALUES(%Q)", zDir);
            zNext = db_changes() ? file_dirname(zDir) : 0;
            fossil_free(zDir);
            zDir = zNext;
          }
        }
      }
    }else if( idt>0 && idv>0 && ridt!=ridv && chnged ){
      /* Merge the changes in the current tree into the target version */
      Blob e, r, t, v;
      Blob r, t, v;
      int rc;
      if( nameChng ){
        fossil_print("MERGE %s -> %s\n", zName, zNewName);
      }else{
      printf("MERGE %s\n", zName);
      undo_save(zName);
      content_get(ridt, &t);
      content_get(ridv, &v);
        fossil_print("MERGE %s\n", zName);
      }
      if( islinkv || islinkt ){
        fossil_print("***** Cannot merge symlink %s\n", zNewName);
        nConflict++;
      }else{
        unsigned mergeFlags = dryRunFlag ? MERGE_DRYRUN : 0;
        if(keepMergeFlag!=0) mergeFlags |= MERGE_KEEP_FILES;
        if( !dryRunFlag && !internalUpdate ) undo_save(zName);
        content_get(ridt, &t);
        content_get(ridv, &v);
      blob_zero(&e);
      blob_read_from_file(&e, zFullPath);
        rc = merge_3way(&v, zFullPath, &t, &r, mergeFlags);
      rc = blob_merge(&v, &e, &t, &r);
      if( rc>=0 ){
        if( !nochangeFlag ) blob_write_to_file(&r, zFullPath);
        if( rc>0 ){
          printf("***** %d merge conflicts in %s\n", rc, zName);
        }
      }else{
        printf("***** Cannot merge binary file %s\n", zName);
      }
        if( rc>=0 ){
          if( !dryRunFlag ){
            blob_write_to_file(&r, zFullNewPath);
            file_setexe(zFullNewPath, isexe);
          }
          if( rc>0 ){
            fossil_print("***** %d merge conflicts in %s\n", rc, zNewName);
            nConflict++;
          }
        }else{
          if( !dryRunFlag ){
            if( !keepMergeFlag ){
              /* Name of backup file with Original content */
              char *zOrig = file_newname(zFullPath, "original", 1);
              /* Backup non-mergeable binary file when --keep-merge-files is
                 not specified */
              file_copy(zFullPath, zOrig);
              fossil_free(zOrig);
            }
            blob_write_to_file(&t, zFullNewPath);
            file_setexe(zFullNewPath, isexe);
          }
          fossil_print("***** Cannot merge binary file %s", zNewName);
          if( !dryRunFlag ){
            fossil_print(", original copy backed up locally");
          }
          fossil_print("\n");
          nConflict++;
        }
      }
      if( nameChng && !dryRunFlag ) file_delete(zFullPath);
      blob_reset(&v);
      blob_reset(&e);
      blob_reset(&t);
      blob_reset(&r);
    }else{
      nUpdate--;
      if( chnged ){
    }else if( verboseFlag ){
      printf("UNCHANGED %s\n", zName);
    }
        if( verboseFlag ) fossil_print("EDITED %s\n", zName);
      }else{
        db_bind_int(&mtimeXfer, ":idv", idv);
        db_bind_int(&mtimeXfer, ":idt", idt);
        db_step(&mtimeXfer);
        db_reset(&mtimeXfer);
        if( verboseFlag ) fossil_print("UNCHANGED %s\n", zName);
      }
    }
    free(zFullPath);
    free(zFullNewPath);
  }
  db_finalize(&q);
  db_finalize(&mtimeXfer);
  fossil_print("%.79c\n",'-');
  if( nUpdate==0 ){
    show_common_info(tid, "checkout:", 1, 0);
    fossil_print("%-13s None. Already up-to-date\n", "changes:");
  }else{
    fossil_print("%-13s %.40s %s\n", "updated-from:", rid_to_uuid(vid),
                 db_text("", "SELECT datetime(mtime) || ' UTC' FROM event "
                         "  WHERE objid=%d", vid));
    show_common_info(tid, "updated-to:", 1, 0);
    fossil_print("%-13s %d file%s modified.\n", "changes:",
                 nUpdate, nUpdate>1 ? "s" : "");
  
  }

  /* Report on conflicts
  */
  if( !dryRunFlag ){
    Stmt q;
    int nMerge = 0;
    db_prepare(&q, "SELECT mhash, id FROM vmerge WHERE id<=0");
    while( db_step(&q)==SQLITE_ROW ){
      const char *zLabel = "merge";
      switch( db_column_int(&q, 1) ){
        case -1:  zLabel = "cherrypick merge"; break;
        case -2:  zLabel = "backout merge";    break;
      }
      fossil_warning("uncommitted %s against %S.",
                     zLabel, db_column_text(&q, 0));
      nMerge++;
    }
    db_finalize(&q);
    leaf_ambiguity_warning(tid, tid);

    if( nConflict ){
      if( internalUpdate ){
        internalConflictCnt = nConflict;
        nConflict = 0;
      }else{
        fossil_warning("WARNING: %d merge conflicts", nConflict);
      }
    }
    if( nOverwrite ){
      fossil_warning("WARNING: %d unmanaged files were overwritten",
                     nOverwrite);
    }
    if( nMerge ){
      fossil_warning("WARNING: %d uncommitted prior merges", nMerge);
    }
  }

  /*
  ** Clean up the mid and pid VFILE entries.  Then commit the changes.
  */
  if( nochangeFlag ){
    db_end_transaction(1);  /* With --nochange, rollback changes */
  if( dryRunFlag ){
    db_end_transaction(1);  /* With --dry-run, rollback changes */
    fossil_warning("\nREMINDER: this was a dry run -"
                   " no files were actually changed "
                   "(checkout is still %.10s).", rid_to_uuid(vid));
  }else{
    char *zPwd;
    ensure_empty_dirs_created(1);
    sqlite3_create_function(g.db, "rmdir", 1, SQLITE_UTF8|SQLITE_DIRECTONLY, 0,
                            file_rmdir_sql_function, 0, 0);
    zPwd = file_getcwd(0,0);
    db_multi_exec(
      "SELECT rmdir(%Q||name) FROM dir_to_delete"
      " WHERE (%Q||name)<>%Q ORDER BY name DESC",
      g.zLocalRoot, g.zLocalRoot, zPwd
    );
    fossil_free(zPwd);
    if( g.argc<=3 ){
      /* All files updated.  Shift the current checkout to the target. */
      /* All files updated.  Shift the current check-out to the target. */
      db_multi_exec("DELETE FROM vfile WHERE vid!=%d", tid);
      checkout_set_all_exe(tid);
      manifest_to_disk(tid);
      db_lset_int("checkout", tid);
      db_set_checkout(tid);
    }else{
      /* A subset of files have been checked out.  Keep the current
      ** checkout unchanged. */
      ** check-out unchanged. */
      db_multi_exec("DELETE FROM vfile WHERE vid!=%d", vid);
    }
    undo_finish();
    if( !internalUpdate ) undo_finish();
    if( setmtimeFlag ) vfile_check_signature(tid, CKSIG_SETMTIME);
    db_end_transaction(0);
  }
}

/*
** Create empty directories specified by the empty-dirs setting.
*/
void ensure_empty_dirs_created(int clearDirTable){
  char *zEmptyDirs = db_get("empty-dirs", 0);
  if( zEmptyDirs!=0 ){
    int i;
    Glob *pGlob = glob_create(zEmptyDirs);

    for(i=0; pGlob!=0 && i<pGlob->nPattern; i++){
      const char *zDir = pGlob->azPattern[i];
      char *zPath = mprintf("%s/%s", g.zLocalRoot, zDir);
      switch( file_isdir(zPath, RepoFILE) ){
        case 0: { /* doesn't exist */
          fossil_free(zPath);
          zPath = mprintf("%s/%s/x", g.zLocalRoot, zDir);
          if( file_mkfolder(zPath, RepoFILE, 0, 1)!=0 ) {
            fossil_warning("couldn't create directory %s as "
                           "required by empty-dirs setting", zDir);
          }
          break;
        }
        case 1: { /* exists, and is a directory */
          /* make sure this directory is not on the delete list */
          if( clearDirTable ){
            db_multi_exec(
              "DELETE FROM dir_to_delete WHERE name=%Q", zDir
            );
          }
          break;
        }
        case 2: { /* exists, but isn't a directory */
          fossil_warning("file %s found, but a directory is required "
                         "by empty-dirs setting", zDir);
        }
      }
      fossil_free(zPath);
    }
    glob_free(pGlob);
  }
}

/*
** Get the contents of a file within a given revision.
** Get the manifest record for a given revision, or the current check-out if
** zRevision is NULL.
*/
int historical_version_of_file(
Manifest *historical_manifest(
  const char *revision,    /* The baseline name containing the file */
  const char *file,        /* Full treename of the file */
  const char *zRevision    /* The check-in to query, or NULL for current */
  Blob *content,           /* Put the content here */
  int errCode              /* Error code if file not found.  Panic if 0. */
){
  Blob mfile;
  Manifest m;
  int vid;
  Manifest *pManifest;
  int i, rid=0;
  
  if( revision ){
    rid = name_to_rid(revision);

  /* Determine the check-in manifest artifact ID.  Panic on failure. */
  if( zRevision ){
    vid = name_to_typed_rid(zRevision, "ci");
  }else if( !g.localOpen ){
    vid = name_to_typed_rid(db_get("main-branch", 0), "ci");
  }else{
    rid = db_lget_int("checkout", 0);
  }
  if( !is_a_version(rid) ){
    if( errCode>0 ) return errCode;
    fossil_fatal("no such check-out: %s", revision);
  }
  content_get(rid, &mfile);
  
  if( manifest_parse(&m, &mfile) ){
    for(i=0; i<m.nFile; i++){
    vid = db_lget_int("checkout", 0);
    if( !is_a_version(vid) ){
      if( vid==0 ) return 0;
      zRevision = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
      if( zRevision ){
        fossil_fatal("check-out artifact is not a check-in: %s", zRevision);
      }else{
        fossil_fatal("invalid check-out artifact ID: %d", vid);
      }
    }
  }

  /* Parse the manifest, given its artifact ID.  Panic on failure. */
  if( !(pManifest = manifest_get(vid, CFTYPE_MANIFEST, 0)) ){
    if( zRevision ){
      fossil_fatal("could not parse manifest for check-in: %s", zRevision);
    }else{
      fossil_fatal("could not parse manifest for current check-out");
    }
  }

  /* Return the manifest pointer.  The caller must use manifest_destroy() to
   * clean up when finished using the manifest. */
  return pManifest;
}

/*
** Get the contents of a file within the check-in "zRevision".  If
** zRevision==NULL then get the file content for the current check-out.
*/
int historical_blob(
  const char *zRevision,   /* The check-in containing the file */
  const char *zFile,       /* Full treename of the file */
  Blob *pBlob,             /* Put the content here */
  int fatal                /* If nonzero, panic if file/artifact not found */
){
      if( strcmp(m.aFile[i].zName, file)==0 ){
        rid = uuid_to_rid(m.aFile[i].zUuid, 0);
        return content_get(rid, content);
      }
    }
    if( errCode<=0 ){
      fossil_fatal("file %s does not exist in baseline: %s", file, revision);
    }
  }else if( errCode<=0 ){
    fossil_panic("could not parse manifest for baseline: %s", revision);
  }
  return errCode;
}

  int result = 0;

  /* Get the manifest for the requested check-in version.  This call unavoidably
   * panics on failure even if fatal is not set. */
  Manifest *pManifest = historical_manifest(zRevision);

  /* Try to find the file record within the manifest. */
  ManifestFile *pFile = manifest_file_find(pManifest, zFile);

  if( !pFile ){
    /* Process file-not-found errors. */
    if( fatal ){
      if( zRevision ){
        fossil_fatal("file %s does not exist in check-in %s", zFile, zRevision);
      }else{
        fossil_fatal("no such file: %s", zFile);
      }
    }
  }else{
    /* Get the file's contents. */
    result = content_get(fast_uuid_to_rid(pFile->zUuid), pBlob);

    /* Process artifact-not-found errors. */
    if( !result && fatal ){
      if( zRevision ){
        fossil_fatal("missing artifact %s for file %s in check-in %s",
            pFile->zUuid, zFile, zRevision);
      }else{
        fossil_fatal("missing artifact %s for file %s", pFile->zUuid, zFile);
      }
    }
  }

  /* Deallocate the parsed manifest structure. */
  manifest_destroy(pManifest);

  /* Return 1 on success and (assuming fatal is not set) 0 if not found. */
  return result;
}

/*
** COMMAND: revert
**
** Usage: %fossil revert ?-r REVISION? FILE ...
** Usage: %fossil revert ?OPTIONS? ?FILE ...?
**
** Revert to the current repository version of FILE, or to
** the version associated with baseline REVISION if the -r flag
** appears.
** the baseline VERSION specified with -r flag.
**
** If FILE was part of a rename operation, both the original file
** and the renamed file are reverted.
**
** Using a directory name for any of the FILE arguments is the same
** as using every subdirectory and file beneath that directory.
**
** Revert all files if no file name is provided.
**
** If a file is reverted accidently, it can be restored using
** If a file is reverted accidentally, it can be restored using
** the "fossil undo" command.
**
** Options:
**   -r|--revision VERSION    Revert given FILE(s) back to given
**                            VERSION
**
** See also: [[redo]], [[undo]], [[checkout]], [[update]]
*/
void revert_cmd(void){
  Manifest *pCoManifest;          /* Manifest of current check-out */
  Manifest *pRvManifest;          /* Manifest of selected revert version */
  ManifestFile *pCoFile;          /* File within current check-out manifest */
  ManifestFile *pRvFile;          /* File within revert version manifest */
  const char *zFile;
  const char *zRevision;
  Blob record;
  const char *zFile;              /* Filename relative to check-out root */
  const char *zRevision;          /* Selected revert version, NULL if current */
  Blob record = BLOB_INITIALIZER; /* Contents of each reverted file */
  int i;
  int errCode;
  int rid = 0;
  Stmt q;
  int revertAll = 0;
  int revisionOptNotSupported = 0;
  

  undo_capture_command_line();
  zRevision = find_option("revision", "r", 1);
  verify_all_options();
  

  if( g.argc<2 ){
    usage("?OPTIONS? [FILE] ...");
  }
  if( zRevision && g.argc<3 ){
    fossil_fatal("the --revision option does not work for the entire tree");
    fossil_fatal("directories or the entire tree can only be reverted"
                 " back to current version");
  }
  db_must_be_within_tree();

  /* Get manifests of revert version and (if different) current check-out. */
  pRvManifest = historical_manifest(zRevision);
  pCoManifest = zRevision ? historical_manifest(0) : 0;

  db_begin_transaction();
  undo_begin();
  db_multi_exec("CREATE TEMP TABLE torevert(name UNIQUE);");

  if( g.argc>2 ){
    for(i=2; i<g.argc; i++){
      Blob fname;
      zFile = mprintf("%/", g.argv[i]);
      blob_zero(&fname);
      file_tree_name(zFile, &fname, 1);
      db_multi_exec("REPLACE INTO torevert VALUES(%B)", &fname);
      file_tree_name(zFile, &fname, 0, 1);
      if( blob_eq(&fname, ".") ){
        if( zRevision ){
          revisionOptNotSupported = 1;
          break;
        }
        revertAll = 1;
        break;
      }else if( db_exists(
        "SELECT pathname"
        "  FROM vfile"
        " WHERE (substr(pathname,1,length('%q/'))='%q/'"
        "    OR  substr(origname,1,length('%q/'))='%q/');",
        blob_str(&fname), blob_str(&fname),
        blob_str(&fname), blob_str(&fname)) ){
        int vid;
        vid = db_lget_int("checkout", 0);
        vfile_check_signature(vid, 0);

        if( zRevision ){
          revisionOptNotSupported = 1;
          break;
        }
        db_multi_exec(
          "INSERT OR IGNORE INTO torevert"
          " SELECT pathname"
          "   FROM vfile"
          "  WHERE (substr(pathname,1,length('%q/'))='%q/'"
          "     OR  substr(origname,1,length('%q/'))='%q/')"
          "    AND (chnged OR deleted OR rid=0 OR pathname!=origname);",
          blob_str(&fname), blob_str(&fname),
          blob_str(&fname), blob_str(&fname)
        );
      }else{
        db_multi_exec(
          "REPLACE INTO torevert VALUES(%B);"
          "INSERT OR IGNORE INTO torevert"
          " SELECT pathname"
          "   FROM vfile"
          "  WHERE origname=%B;",
          &fname, &fname
        );
      }
      blob_reset(&fname);
    }
  }else{
    revertAll = 1;
  }

  if( revisionOptNotSupported ){
    fossil_fatal("directories or the entire tree can only be reverted"
                 " back to current version");
  }

  if ( revertAll ){
    int vid;
    vid = db_lget_int("checkout", 0);
    vfile_check_signature(vid, 0);
    db_multi_exec(
      "DELETE FROM vmerge;"
      "INSERT INTO torevert "
      "SELECT pathname"
      "  FROM vfile "
      " WHERE chnged OR deleted OR rid=0 OR pathname!=origname"
      "INSERT OR IGNORE INTO torevert "
      " SELECT pathname"
      "   FROM vfile "
      "  WHERE chnged OR deleted OR rid=0 OR pathname!=origname;"
    );
  }

  db_multi_exec(
    "INSERT OR IGNORE INTO torevert"
    " SELECT origname"
    "   FROM vfile"
    "  WHERE origname!=pathname AND pathname IN (SELECT name FROM torevert);"
  );
  blob_zero(&record);
  db_prepare(&q, "SELECT name FROM torevert");
  if( zRevision==0 ){
    int vid = db_lget_int("checkout", 0);
    zRevision = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
  }
  while( db_step(&q)==SQLITE_ROW ){
    char *zFull;
    zFile = db_column_text(&q, 0);
    zFull = mprintf("%/%/", g.zLocalRoot, zFile);
    pRvFile = pRvManifest? manifest_file_find(pRvManifest, zFile) : 0;
    if( zRevision!=0 ){
      errCode = historical_version_of_file(zRevision, zFile, &record, 2);
    }else{
      rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%Q", zFile);
      if( rid==0 ){
        errCode = 2;
      }else{
    if( !pRvFile ){
      if( db_int(0, "SELECT rid FROM vfile WHERE pathname=%Q OR origname=%Q",
                 zFile, zFile)==0 ){
        fossil_print("UNMANAGE %s\n", zFile);
      }else{
        undo_save(zFile);
        file_delete(zFull);
        fossil_print("DELETE   %s\n", zFile);
      }
      db_multi_exec(
        "UPDATE OR REPLACE vfile"
        "   SET pathname=origname, origname=NULL"
        " WHERE pathname=%Q AND origname!=pathname;"
        "DELETE FROM vfile WHERE pathname=%Q",
        zFile, zFile
      );
    }else if( file_unsafe_in_tree_path(zFull) ){
      /* Ignore this file */
    }else{
        content_get(rid, &record);
        errCode = 0;
      }
    }
      sqlite3_int64 mtime;
      int rvChnged = 0;
      int rvPerm = manifest_file_mperm(pRvFile);

      /* Determine if reverted-to file is different than checked-out file. */
      if( pCoManifest && (pCoFile = manifest_file_find(pCoManifest, zFile)) ){
        rvChnged = manifest_file_mperm(pRvFile)!=rvPerm
                || fossil_strcmp(pRvFile->zUuid, pCoFile->zUuid)!=0;
      }

      /* Get contents of reverted-to file. */
      content_get(fast_uuid_to_rid(pRvFile->zUuid), &record);
    if( errCode==2 ){
      fossil_warning("file not in repository: %s", zFile);
    }else{

      undo_save(zFile);
      if( file_size(zFull, RepoFILE)>=0
       && (rvPerm==PERM_LNK || file_islink(0))
      ){
        file_delete(zFull);
      }
      if( rvPerm==PERM_LNK ){
        symlink_create(blob_str(&record), zFull);
      }else{
      char *zFull = mprintf("%//%/", g.zLocalRoot, zFile);
      undo_save(zFile);
      blob_write_to_file(&record, zFull);
      printf("REVERTED: %s\n", zFile);
      free(zFull);
        blob_write_to_file(&record, zFull);
      }
      file_setexe(zFull, rvPerm==PERM_EXE);
      fossil_print("REVERT   %s\n", zFile);
      mtime = file_mtime(zFull, RepoFILE);
      db_multi_exec(
         "UPDATE vfile"
         "   SET mtime=%lld, chnged=%d, deleted=0, isexe=%d, islink=%d,"
         "       mrid=rid, mhash=NULL"
         " WHERE pathname=%Q OR origname=%Q",
         mtime, rvChnged, rvPerm==PERM_EXE, rvPerm==PERM_LNK, zFile, zFile
      );
    }
    blob_reset(&record);
    free(zFull);
  }
  db_finalize(&q);
  undo_finish();
  db_end_transaction(0);
  printf("\"fossil undo\" is available to undo the changes shown above.\n");

  /* Deallocate parsed manifest structures. */
  manifest_destroy(pRvManifest);
  manifest_destroy(pCoManifest);
}
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**
*******************************************************************************
**
** This file contains code for parsing URLs that appear on the command-line
*/
#include "config.h"
#include "url.h"
#include <stdio.h>

#ifdef _WIN32
#include <io.h>
#endif

#if INTERFACE
/*
** Flags for url_parse()
*/
#define URL_PROMPT_PW        0x0001  /* Prompt for password if needed */
#define URL_REMEMBER         0x0002  /* Remember the url for later reuse */
#define URL_ASK_REMEMBER_PW  0x0004  /* Ask whether to remember prompted pw */
#define URL_REMEMBER_PW      0x0008  /* Should remember pw */
#define URL_PROMPTED         0x0010  /* Prompted for PW already */
#define URL_OMIT_USER        0x0020  /* Omit the user name from URL */
#define URL_USE_CONFIG       0x0040  /* Use remembered URLs from CONFIG table */
#define URL_USE_PARENT       0x0080  /* Use the URL of the parent project */
#define URL_SSH_PATH         0x0100  /* Include PATH= on SSH syncs */
#define URL_SSH_RETRY        0x0200  /* This a retry of an SSH */
#define URL_SSH_EXE          0x0400  /* ssh: URL contains fossil= query param*/

/*
** The URL related data used with this subsystem.
*/
struct UrlData {
  int isFile;           /* True if a "file:" url */
  int isHttps;          /* True if a "https:" url */
  int isSsh;            /* True if an "ssh:" url */
  int isAlias;          /* Input URL was an alias */
  char *name;           /* Hostname for http: or filename for file: */
  char *hostname;       /* The HOST: parameter on http headers */
  const char *protocol; /* "http" or "https" or "ssh" or "file" */
  int port;             /* TCP port number for http: or https: */
  int dfltPort;         /* The default port for the given protocol */
  char *path;           /* Pathname for http: */
  char *user;           /* User id for http: */
  char *passwd;         /* Password for http: */
  char *canonical;      /* Canonical representation of the URL */
  char *proxyAuth;      /* Proxy-Authorizer: string */
  char *fossil;         /* The fossil query parameter on ssh: */
  char *pwConfig;       /* CONFIG table entry that gave us the password */
  unsigned flags;       /* Boolean flags controlling URL processing */
  int useProxy;         /* Used to remember that a proxy is in use */
  int proxyOrigPort;       /* Tunneled port number for https through proxy */
  char *proxyUrlPath;      /* Remember path when proxy is use */
  char *proxyUrlCanonical; /* Remember canonical path when proxy is use */
};
#endif /* INTERFACE */


/*
** Parse the given URL.  Populate variables in the global "g" structure.
** Parse the URL in the zUrl argument. Store results in the pUrlData object.
** Populate members of pUrlData as follows:
**
**      g.urlIsFile      True if FILE:
**      g.urlIsHttps     True if HTTPS: 
**      g.urlProtocol    "http" or "https" or "file"
**      g.urlName        Hostname for HTTP: or HTTPS:.  Filename for FILE:
**      g.urlPort        TCP port number for HTTP or HTTPS.
**      g.urlDfltPort    Default TCP port number (80 or 443).
**      g.urlPath        Path name for HTTP or HTTPS.
**      g.urlUser        Userid.
**      g.urlPasswd      Password.
**      g.urlHostname    HOST:PORT or just HOST if port is the default.
**      g.urlCanonical   The URL in canonical form, omitting the password
**      isFile      True if FILE:
**      isHttps     True if HTTPS:
**      isSsh       True if SSH:
**      protocol    "http" or "https" or "file" or "ssh"
**      name        Hostname for HTTP:, HTTPS:, SSH:.  Filename for FILE:
**      port        TCP port number for HTTP or HTTPS.
**      dfltPort    Default TCP port number (80 or 443).
**      path        Path name for HTTP or HTTPS.
**      user        Userid.
**      passwd      Password.
**      hostname    HOST:PORT or just HOST if port is the default.
**      canonical   The URL in canonical form, omitting the password
**
** If URL_USECONFIG is set and zUrl is NULL or "default", then parse the
** URL stored in last-sync-url and last-sync-pw of the CONFIG table.  Or if
** URL_USE_PARENT is also set, then use parent-project-url and
** parent-project-pw from the CONFIG table instead of last-sync-url
** HTTP url format is:
** and last-sync-pw.
**
**     http://userid:password@host:port/path?query#fragment
** If URL_USE_CONFIG is set and zUrl is a symbolic name, then look up
** the URL in sync-url:%Q and sync-pw:%Q elements of the CONFIG table where
** %Q is the symbolic name.
**
** This routine differs from url_parse() in that this routine stores the
** results in pUrlData and does not change the values of global variables.
** The url_parse() routine puts its result in g.url.
*/
void url_parse(const char *zUrl){
void url_parse_local(
  const char *zUrl,
  unsigned int urlFlags,
  UrlData *pUrlData
){
  int i, j, c;
  char *zFile = 0;

  memset(pUrlData, 0, sizeof(*pUrlData));
  if( urlFlags & URL_USE_CONFIG ){
    if( zUrl==0 || strcmp(zUrl,"default")==0 ){
      const char *zPwConfig = "last-sync-pw";
      if( urlFlags & URL_USE_PARENT ){
        zUrl = db_get("parent-project-url", 0);
        if( zUrl==0 ){
          zUrl = db_get("last-sync-url",0);
        }else{
          zPwConfig = "parent-project-pw";
        }
      }else{
        zUrl = db_get("last-sync-url", 0);
      }
      if( zUrl==0 ) return;
      if( pUrlData->passwd==0 ){
        pUrlData->passwd = unobscure(db_get(zPwConfig, 0));
        pUrlData->pwConfig = fossil_strdup(zPwConfig);
      }
      pUrlData->isAlias = 1;
    }else{
      char *zKey = sqlite3_mprintf("sync-url:%q", zUrl);
      char *zAlt = db_get(zKey, 0);
      if( zAlt ){
        pUrlData->pwConfig = mprintf("sync-pw:%q", zUrl);
        pUrlData->passwd = unobscure(
          db_text(0, "SELECT value FROM config WHERE name='sync-pw:%q'",zUrl)
        );
        zUrl = zAlt;
        urlFlags |= URL_REMEMBER_PW;
        pUrlData->isAlias = 1;
      }else{
        pUrlData->isAlias = 0;
      }
      sqlite3_free(zKey);
    }
  }else{
    if( zUrl==0 ) return;
  }

  if( strncmp(zUrl, "http://", 7)==0 || strncmp(zUrl, "https://", 8)==0 ){
  if( strncmp(zUrl, "http://", 7)==0
   || strncmp(zUrl, "https://", 8)==0
   || strncmp(zUrl, "ssh://", 6)==0
  ){
    int iStart;
    char *zLogin;
    char *zExe;
    char cQuerySep = '?';
    g.urlIsFile = 0;

    if( zUrl[4]=='s' ){
      g.urlIsHttps = 1;
      g.urlProtocol = "https";
      g.urlDfltPort = 443;
      pUrlData->isHttps = 1;
      pUrlData->protocol = "https";
      pUrlData->dfltPort = 443;
      iStart = 8;
    }else if( zUrl[0]=='s' ){
      pUrlData->isSsh = 1;
      pUrlData->protocol = "ssh";
      pUrlData->dfltPort = 22;
      pUrlData->fossil = fossil_strdup("fossil");
      iStart = 6;
    }else{
      g.urlIsHttps = 0;
      g.urlProtocol = "http";
      g.urlDfltPort = 80;
      pUrlData->isHttps = 0;
      pUrlData->protocol = "http";
      pUrlData->dfltPort = 80;
      iStart = 7;
    }
    for(i=iStart; (c=zUrl[i])!=0 && c!='/' && c!='@'; i++){}
    if( c=='@' ){
      /* Parse up the user-id and password */
      for(j=iStart; j<i && zUrl[j]!=':'; j++){}
      g.urlUser = mprintf("%.*s", j-iStart, &zUrl[iStart]);
      dehttpize(g.urlUser);
      pUrlData->user = mprintf("%.*s", j-iStart, &zUrl[iStart]);
      dehttpize(pUrlData->user);
      if( j<i ){
        if( ( urlFlags & URL_REMEMBER ) && pUrlData->isSsh==0 ){
          urlFlags |= URL_ASK_REMEMBER_PW;
        }
        g.urlPasswd = mprintf("%.*s", i-j-1, &zUrl[j+1]);
        dehttpize(g.urlPasswd);
        pUrlData->passwd = mprintf("%.*s", i-j-1, &zUrl[j+1]);
        dehttpize(pUrlData->passwd);
      }
      if( pUrlData->isSsh ){
        urlFlags &= ~URL_ASK_REMEMBER_PW;
      }
      if( urlFlags & URL_OMIT_USER ){
        zLogin = mprintf("");
      }else{
        zLogin = mprintf("%t@", pUrlData->user);
      }
      for(j=i+1; (c=zUrl[j])!=0 && c!='/' && c!=':'; j++){}
      g.urlName = mprintf("%.*s", j-i-1, &zUrl[i+1]);
      pUrlData->name = mprintf("%.*s", j-i-1, &zUrl[i+1]);
      i = j;
      zLogin = mprintf("%t@", g.urlUser);
    }else{
      int inSquare = 0;
      int n;
      for(i=iStart; (c=zUrl[i])!=0 && c!='/' && c!=':'; i++){}
      g.urlName = mprintf("%.*s", i-iStart, &zUrl[iStart]);
      for(i=iStart; (c=zUrl[i])!=0 && c!='/' && (inSquare || c!=':'); i++){
        if( c=='[' ) inSquare = 1;
        if( c==']' ) inSquare = 0;
      }
      pUrlData->name = mprintf("%.*s", i-iStart, &zUrl[iStart]);
      n = strlen(pUrlData->name);
      if( pUrlData->name[0]=='[' && n>2 && pUrlData->name[n-1]==']' ){
        pUrlData->name++;
        pUrlData->name[n-2] = 0;
      }
      zLogin = mprintf("");
    }
    for(j=0; g.urlName[j]; j++){ g.urlName[j] = tolower(g.urlName[j]); }
    fossil_strtolwr(pUrlData->name);
    if( c==':' ){
      g.urlPort = 0;
      pUrlData->port = 0;
      i++;
      while( (c = zUrl[i])!=0 && isdigit(c) ){
        g.urlPort = g.urlPort*10 + c - '0';
      while( (c = zUrl[i])!=0 && fossil_isdigit(c) ){
        pUrlData->port = pUrlData->port*10 + c - '0';
        i++;
      }
      if( c!=0 && c!='/' ) fossil_fatal("url missing '/' after port number");
      g.urlHostname = mprintf("%s:%d", g.urlName, g.urlPort);
      pUrlData->hostname = mprintf("%s:%d", pUrlData->name, pUrlData->port);
    }else{
      g.urlPort = g.urlDfltPort;
      g.urlHostname = g.urlName;
    }
    g.urlPath = mprintf(&zUrl[i]);
    dehttpize(g.urlName);
    dehttpize(g.urlPath);
    if( g.urlDfltPort==g.urlPort ){
      g.urlCanonical = mprintf(
        "%s://%s%T%T", 
        g.urlProtocol, zLogin, g.urlName, g.urlPath
      pUrlData->port = pUrlData->dfltPort;
      pUrlData->hostname = pUrlData->name;
    }
    dehttpize(pUrlData->name);
    pUrlData->path = mprintf("%s", &zUrl[i]);
    for(i=0; pUrlData->path[i] && pUrlData->path[i]!='?'; i++){}
    if( pUrlData->path[i] ){
      pUrlData->path[i] = 0;
      i++;
    }
    zExe = mprintf("");
    while( pUrlData->path[i]!=0 ){
      char *zName, *zValue;
      zName = &pUrlData->path[i];
      zValue = zName;
      while( pUrlData->path[i] && pUrlData->path[i]!='=' ){ i++; }
      if( pUrlData->path[i]=='=' ){
        pUrlData->path[i] = 0;
        i++;
        zValue = &pUrlData->path[i];
        while( pUrlData->path[i] && pUrlData->path[i]!='&' ){ i++; }
      }
      if( pUrlData->path[i] ){
        pUrlData->path[i] = 0;
        i++;
      }
      if( fossil_strcmp(zName,"fossil")==0 ){
        fossil_free(pUrlData->fossil);
        pUrlData->fossil = fossil_strdup(zValue);
        dehttpize(pUrlData->fossil);
        fossil_free(zExe);
        zExe = mprintf("%cfossil=%T", cQuerySep, pUrlData->fossil);
        cQuerySep = '&';
        urlFlags |= URL_SSH_EXE;
      }
    }

    dehttpize(pUrlData->path);
    if( pUrlData->dfltPort==pUrlData->port ){
      pUrlData->canonical = mprintf(
        "%s://%s%T%T%z",
        pUrlData->protocol, zLogin, pUrlData->name, pUrlData->path, zExe
      );
    }else{
      g.urlCanonical = mprintf(
        "%s://%s%T:%d%T",
        g.urlProtocol, zLogin, g.urlName, g.urlPort, g.urlPath
      pUrlData->canonical = mprintf(
        "%s://%s%T:%d%T%z",
        pUrlData->protocol, zLogin, pUrlData->name, pUrlData->port,
        pUrlData->path, zExe
      );
    }
    if( pUrlData->isSsh && pUrlData->path[1] ){
      char *zOld = pUrlData->path;
      pUrlData->path = mprintf("%s", zOld+1);
      fossil_free(zOld);
    }
    free(zLogin);
  }else if( strncmp(zUrl, "file:", 5)==0 ){
    g.urlIsFile = 1;
    pUrlData->isFile = 1;
    if( zUrl[5]=='/' && zUrl[6]=='/' ){
      i = 7;
    }else{
      i = 5;
    }
    zFile = mprintf("%s", &zUrl[i]);
  }else if( file_isfile(zUrl) ){
    g.urlIsFile = 1;
  }else if( file_isfile(zUrl, ExtFILE) ){
    pUrlData->isFile = 1;
    zFile = mprintf("%s", zUrl);
  }else if( file_isdir(zUrl)==1 ){
  }else if( file_isdir(zUrl, ExtFILE)==1 ){
    zFile = mprintf("%s/FOSSIL", zUrl);
    if( file_isfile(zFile) ){
      g.urlIsFile = 1;
    }else{
      free(zFile);
    if( file_isfile(zFile, ExtFILE) ){
      pUrlData->isFile = 1;
    }else{
      free(zFile);
      zFile = 0;
      fossil_fatal("unknown repository: %s", zUrl);
    }
  }else{
    fossil_fatal("unknown repository: %s", zUrl);
  }
  if( urlFlags ) pUrlData->flags = urlFlags;
  if( pUrlData->isFile ){
    Blob cfile;
    dehttpize(zFile);
    file_canonical_name(zFile, &cfile, 0);
    free(zFile);
    zFile = 0;
    pUrlData->protocol = "file";
    pUrlData->path = mprintf("");
    pUrlData->name = mprintf("%b", &cfile);
    pUrlData->canonical = mprintf("file://%T", pUrlData->name);
    blob_reset(&cfile);
  }else if( pUrlData->user!=0 && pUrlData->passwd==0
         && (urlFlags & URL_PROMPT_PW)!=0 ){
    url_prompt_for_password_local(pUrlData);
  }else if( pUrlData->user!=0 && ( urlFlags & URL_ASK_REMEMBER_PW ) ){
    if( fossil_isatty(fossil_fileno(stdin))
        && ( urlFlags & URL_REMEMBER_PW )==0 ){
      if( save_password_prompt(pUrlData->passwd) ){
        pUrlData->flags = urlFlags |= URL_REMEMBER_PW;
      }else{
        pUrlData->flags = urlFlags &= ~URL_REMEMBER_PW;
      }
    }
  }
}

/*
** Construct the complete URL for a UrlData object, including the
** login name and password, into memory obtained from fossil_malloc()
** and return a pointer to that URL text.
*/
char *url_full(const UrlData *p){
  Blob x = BLOB_INITIALIZER;
  if( p->isFile || p->user==0 || p->user[0]==0 ){
    return fossil_strdup(p->canonical);
  }
  blob_appendf(&x, "%s://", p->protocol);
  if( p->user && p->user[0] ){
    blob_appendf(&x, "%t", p->user);
    if( p->passwd && p->passwd[0] ){
      blob_appendf(&x, ":%t", p->passwd);
    }
    blob_appendf(&x, "@");
  }
  blob_appendf(&x, "%T", p->name);
  if( p->dfltPort!=p->port ){
    blob_appendf(&x, ":%d", p->port);
  }
  blob_appendf(&x, "%T", p->path);
  (void)blob_str(&x);
  return x.aData;
      fossil_panic("unknown repository: %s", zUrl);
    }
  }else{
    fossil_panic("unknown repository: %s", zUrl);
}

/*
** Construct a URL for a UrlData object that omits the
** login name and password, into memory obtained from fossil_malloc()
** and return a pointer to that URL text.
*/
char *url_nouser(const UrlData *p){
  Blob x = BLOB_INITIALIZER;
  if( p->isFile || p->user==0 || p->user[0]==0 ){
    return fossil_strdup(p->canonical);
  }
  blob_appendf(&x, "%s://", p->protocol);
  blob_appendf(&x, "%T", p->name);
  if( p->dfltPort!=p->port ){
    blob_appendf(&x, ":%d", p->port);
  }
  blob_appendf(&x, "%T", p->path);
  (void)blob_str(&x);
  return x.aData;
}

/*
** SQL function to remove the username/password from a URL
*/
void url_nouser_func(
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  const char *zOrig = (const char*)sqlite3_value_text(argv[0]);
  UrlData x;
  if( g.urlIsFile ){
    Blob cfile;
    dehttpize(zFile);  
    file_canonical_name(zFile, &cfile);
    free(zFile);
    g.urlProtocol = "file";
    g.urlPath = "";
    g.urlName = mprintf("%b", &cfile);
    g.urlCanonical = mprintf("file://%T", g.urlName);
    blob_reset(&cfile);
  if( zOrig==0 ) return;
  memset(&x, 0, sizeof(x));
  url_parse_local(zOrig, URL_OMIT_USER, &x);
  sqlite3_result_text(context, x.canonical, -1, SQLITE_TRANSIENT);
  url_unparse(&x);
}

/*
** Reclaim malloced memory from a UrlData object
*/
void url_unparse(UrlData *p){
  if( p==0 ){
    p = &g.url;
  }
  fossil_free(p->canonical);
  fossil_free(p->name);
  fossil_free(p->path);
  fossil_free(p->user);
  fossil_free(p->passwd);
  fossil_free(p->fossil);
  fossil_free(p->pwConfig);
  memset(p, 0, sizeof(*p));
}

/*
** Move a URL parse from one UrlData object to another.
*/
void url_move_parse(UrlData *pTo, UrlData *pFrom){
  url_unparse(pTo);
  memcpy(pTo, pFrom, sizeof(*pTo));
  memset(pFrom, 0, sizeof(*pFrom));
}

/*
** Parse the given URL, which describes a sync server.  Populate variables
** in the global "g.url" structure as shown below.  If zUrl is NULL, then
** parse the URL given in the last-sync-url setting, taking the password
** form last-sync-pw.
**
**      g.url.isFile      True if FILE:
**      g.url.isHttps     True if HTTPS:
**      g.url.isSsh       True if SSH:
**      g.url.protocol    "http" or "https" or "file" or "ssh"
**      g.url.name        Hostname for HTTP:, HTTPS:, SSH:.  Filename for FILE:
**      g.url.port        TCP port number for HTTP or HTTPS.
**      g.url.dfltPort    Default TCP port number (80 or 443).
**      g.url.path        Path name for HTTP or HTTPS.
**      g.url.user        Userid.
**      g.url.passwd      Password.
**      g.url.hostname    HOST:PORT or just HOST if port is the default.
**      g.url.canonical   The URL in canonical form, omitting the password
**      g.url.pwConfig    Name of CONFIG table entry containing the password
**
** HTTP url format as follows (HTTPS is the same with a different scheme):
**
**     http://userid:password@host:port/path
**
** SSH url format is:
**
**     ssh://userid@host:port/path?fossil=path/to/fossil.exe
**
** If URL_USE_CONFIG is set then the URL and password might be pulled from
** the CONFIG table rather than from the zUrl parameter.  If zUrl is NULL
** or "default" then the URL is given by the "last-sync-url" setting and
** the password comes form the "last-sync-pw" setting.  If zUrl is a symbolic
** name, then the URL comes from "sync-url:NAME" and the password from
** "sync-pw:NAME" where NAME is the input zUrl string.  Whenever the
** password is taken from the CONFIG table, the g.url.pwConfig field is
** set to the CONFIG.NAME value from which that password is taken.  Otherwise,
** g.url.pwConfig is NULL.
*/
void url_parse(const char *zUrl, unsigned int urlFlags){
  url_parse_local(zUrl, urlFlags, &g.url);
}

/*
** Print the content of g.url
*/
void urlparse_print(int showPw){
  fossil_print("g.url.isFile    = %d\n", g.url.isFile);
  fossil_print("g.url.isHttps   = %d\n", g.url.isHttps);
  fossil_print("g.url.isSsh     = %d\n", g.url.isSsh);
  fossil_print("g.url.protocol  = %s\n", g.url.protocol);
  fossil_print("g.url.name      = %s\n", g.url.name);
  fossil_print("g.url.port      = %d\n", g.url.port);
  fossil_print("g.url.dfltPort  = %d\n", g.url.dfltPort);
  fossil_print("g.url.hostname  = %s\n", g.url.hostname);
  fossil_print("g.url.path      = %s\n", g.url.path);
  fossil_print("g.url.user      = %s\n", g.url.user);
  if( showPw || g.url.pwConfig==0 ){
    fossil_print("g.url.passwd    = %s\n", g.url.passwd);
  }else{
    fossil_print("g.url.passwd    = ************\n");
  }
  fossil_print("g.url.pwConfig  = %s\n", g.url.pwConfig);
  fossil_print("g.url.canonical = %s\n", g.url.canonical);
  fossil_print("g.url.fossil    = %s\n", g.url.fossil);
  fossil_print("g.url.flags     = 0x%04x\n", g.url.flags);
  fossil_print("url_full(g.url) = %z\n", url_full(&g.url));
}

/*
** COMMAND: test-urlparser
**
** Usage: %fossil test-urlparser URL ?options?
**
**    --prompt-pw     Prompt for password if missing
**    --remember      Store results in last-sync-url
**    --show-pw       Show the CONFIG-derived password in the output
**    --use-config    Pull URL and password from the CONFIG table
**    --use-parent    Use the parent project URL
*/
void cmd_test_urlparser(void){
  int i;
  unsigned fg = 0;
  int showPw = 0;
  db_must_be_within_tree();
  url_proxy_options();
  if( find_option("remember",0,0) )    fg |= URL_REMEMBER;
  if( find_option("prompt-pw",0,0) )   fg |= URL_PROMPT_PW;
  if( find_option("use-parent",0,0) )  fg |= URL_USE_PARENT|URL_USE_CONFIG;
  if( find_option("use-config",0,0) )  fg |= URL_USE_CONFIG;
  if( find_option("show-pw",0,0) )     showPw = 1;
  if( (fg & URL_USE_CONFIG)==0 )       showPw = 1;
  if( g.argc!=3 && g.argc!=4 ){
    usage("URL");
  }
  url_parse(g.argv[2]);
  url_parse(g.argv[2], fg);
  for(i=0; i<2; i++){
    printf("g.urlIsFile    = %d\n", g.urlIsFile);
    printf("g.urlIsHttps   = %d\n", g.urlIsHttps);
    printf("g.urlProtocol  = %s\n", g.urlProtocol);
    printf("g.urlName      = %s\n", g.urlName);
    printf("g.urlPort      = %d\n", g.urlPort);
    urlparse_print(showPw);
    if( g.url.isFile || g.url.isSsh ) break;
    printf("g.urlDfltPort  = %d\n", g.urlDfltPort);
    printf("g.urlHostname  = %s\n", g.urlHostname);
    printf("g.urlPath      = %s\n", g.urlPath);
    printf("g.urlUser      = %s\n", g.urlUser);
    printf("g.urlPasswd    = %s\n", g.urlPasswd);
    printf("g.urlCanonical = %s\n", g.urlCanonical);
    if( i==0 ){
      printf("********\n");
      fossil_print("********\n");
      url_enable_proxy("Using proxy: ");
    }
    url_unparse(0);
  }
}

/*
** Proxy specified on the command-line using the --proxy option.
** If there is no --proxy option on the command-line then this
** variable holds a NULL pointer.
*/
static const char *zProxyOpt = 0;

/*
** Extract any proxy options from the command-line.
**
**    --proxy URL|off
**
** The original purpose of this routine is the above.  But this
** This also happens to be a convenient function to use to look for
** the --nosync option that will temporarily disable the "autosync"
** feature.
** also happens to be a convenient place to look for other
** network-related options:
**
**    --nosync             Temporarily disable "autosync"
**
**    --ipv4               Disallow IPv6.  Use only IPv4.
**
**    --accept-any-cert    Disable server SSL cert validation. Accept
**                         any SSL cert that the server provides.
**                         WARNING: this option opens you up to
**                         forged-DNS and man-in-the-middle attacks!
*/
void url_proxy_options(void){
  zProxyOpt = find_option("proxy", 0, 1);
  if( find_option("nosync",0,0) ) g.fNoSync = 1;
  if( find_option("ipv4",0,0) ) g.fIPv4 = 1;
#ifdef FOSSIL_ENABLE_SSL
  if( find_option("accept-any-cert",0,0) ){
    ssl_disable_cert_verification();
  }
#endif /* FOSSIL_ENABLE_SSL */
}

/*
** If the "proxy" setting is defined, then change the URL settings
** (initialized by a prior call to url_parse()) so that the HTTP
** header will be appropriate for the proxy and so that the TCP/IP
** connection will be opened to the proxy rather than to the server.
**
** If zMsg is not NULL and a proxy is used, then print zMsg followed
** by the canonical name of the proxy (with userid and password suppressed).
*/
void url_enable_proxy(const char *zMsg){
  const char *zProxy;
  zProxy = zProxyOpt;
  if( zProxy==0 ){
    zProxy = db_get("proxy", 0);
    if( zProxy==0 || zProxy[0]==0 || is_truth(zProxy) ){
      zProxy = getenv("http_proxy");
    zProxy = db_get("proxy", "system");
    if( fossil_strcmp(zProxy, "system")==0 ){
      zProxy = fossil_getenv("http_proxy");
    }
  }
  if( zProxy && zProxy[0] && !is_false(zProxy) ){
    char *zOriginalUrl = g.urlCanonical;
    char *zOriginalHost = g.urlHostname;
    char *zOriginalUser = g.urlUser;
    char *zOriginalPasswd = g.urlPasswd;
    g.urlUser = 0;
    g.urlPasswd = "";
    url_parse(zProxy);
    if( zMsg ) printf("%s%s\n", zMsg, g.urlCanonical);
    g.urlPath = zOriginalUrl;
    g.urlHostname = zOriginalHost;
    if( g.urlUser ){
      char *zCredentials1 = mprintf("%s:%s", g.urlUser, g.urlPasswd);
  if( zProxy && zProxy[0] && !is_false(zProxy)
      && !g.url.isSsh && !g.url.isFile ){
    char *zOriginalUrl = g.url.canonical;
    char *zOriginalHost = g.url.hostname;
    int fOriginalIsHttps = g.url.isHttps;
    char *zOriginalUser = g.url.user;
    char *zOriginalPasswd = g.url.passwd;
    char *zOriginalUrlPath = g.url.path;
    int iOriginalPort = g.url.port;
    unsigned uOriginalFlags = g.url.flags;
    g.url.user = 0;
    g.url.passwd = "";
    url_parse(zProxy, 0);
    if( zMsg ) fossil_print("%s%s\n", zMsg, g.url.canonical);
    g.url.path = zOriginalUrl;
    g.url.hostname = zOriginalHost;
    if( g.url.user ){
      char *zCredentials1 = mprintf("%s:%s", g.url.user, g.url.passwd);
      char *zCredentials2 = encode64(zCredentials1, -1);
      g.urlProxyAuth = mprintf("Basic %z", zCredentials2);
      g.url.proxyAuth = mprintf("Basic %z", zCredentials2);
      free(zCredentials1);
    }
    g.urlUser = zOriginalUser;
    g.urlPasswd = zOriginalPasswd;
    g.url.user = zOriginalUser;
    g.url.passwd = zOriginalPasswd;
    g.url.isHttps = fOriginalIsHttps;
    g.url.useProxy = 1;
    g.url.proxyUrlCanonical = zOriginalUrl;;
    g.url.proxyUrlPath = zOriginalUrlPath;
    g.url.proxyOrigPort = iOriginalPort;
    g.url.flags = uOriginalFlags;
  }
}

#if INTERFACE
/*
** An instance of this object is used to build a URL with query parameters.
*/
struct HQuery {
  Blob url;                  /* The URL */
  const char *zBase;         /* The base URL */
  int nParam;                /* Number of parameters.  Max 10 */
  const char *azName[10];    /* Parameter names */
  const char *azValue[10];   /* Parameter values */
  int nParam;                /* Number of parameters. */
  int nAlloc;                /* Number of allocated slots */
  const char **azName;       /* Parameter names */
  const char **azValue;      /* Parameter values */
};
#endif

/*
** Initialize the URL object.
*/
void url_initialize(HQuery *p, const char *zBase){
  memset(p, 0, sizeof(*p));
  blob_zero(&p->url);
  p->zBase = zBase;
}
  p->nParam = 0;

/*
** Resets the given URL object, deallocating any memory
** it uses.
*/
void url_reset(HQuery *p){
  blob_reset(&p->url);
  fossil_free((void *)p->azName);
  fossil_free((void *)p->azValue);
  url_initialize(p, p->zBase);
}

/*
** Add a fixed parameter to an HQuery.
** Add a fixed parameter to an HQuery.  Or remove the parameters if zValue==0.
*/
void url_add_parameter(HQuery *p, const char *zName, const char *zValue){
  int i;
  for(i=0; i<p->nParam; i++){
    if( fossil_strcmp(p->azName[i],zName)==0 ){
      if( zValue==0 ){
  assert( p->nParam < count(p->azName) );
  assert( p->nParam < count(p->azValue) );
  p->azName[p->nParam] = zName;
  p->azValue[p->nParam] = zValue;
        p->nParam--;
        p->azValue[i] = p->azValue[p->nParam];
        p->azName[i] = p->azName[p->nParam];
      }else{
        p->azValue[i] = zValue;
      }
      return;
    }
  }
  assert( i==p->nParam );
  if( zValue==0 ) return;
  if( i>=p->nAlloc ){
    p->nAlloc = p->nAlloc*2 + 10;
    p->azName = fossil_realloc((void *)p->azName,
                               sizeof(p->azName[0])*p->nAlloc);
    p->azValue = fossil_realloc((void *)p->azValue,
                                sizeof(p->azValue[0])*p->nAlloc);
  }
  p->azName[i] = zName;
  p->azValue[i] = zValue;
  p->nParam++;
}

/*
** Render the URL with a parameter override.
**
** Returned memory is transient and is overwritten on the next call to this
** routine for the same HQuery, or until the HQuery object is destroyed.
*/
char *url_render(
  HQuery *p,              /* Base URL */
  const char *zName1,     /* First override */
  const char *zValue1,    /* First override value */
  const char *zName2,     /* Second override */
  const char *zValue2     /* Second override value */
){
  const char *zSep = "?";
  int i;
  

  blob_reset(&p->url);
  blob_appendf(&p->url, "%s/%s", g.zBaseURL, p->zBase);
  blob_appendf(&p->url, "%R/%s", p->zBase);
  for(i=0; i<p->nParam; i++){
    const char *z = p->azValue[i];
    if( zName1 && strcmp(zName1,p->azName[i])==0 ){
    if( zName1 && fossil_strcmp(zName1,p->azName[i])==0 ){
      zName1 = 0;
      z = zValue1;
      if( z==0 ) continue;
    }
    if( zName2 && strcmp(zName2,p->azName[i])==0 ){
    if( zName2 && fossil_strcmp(zName2,p->azName[i])==0 ){
      zName2 = 0;
      z = zValue2;
      if( z==0 ) continue;
    }
    blob_appendf(&p->url, "%s%s=%T", zSep, p->azName[i], z);
    blob_appendf(&p->url, "%s%s", zSep, p->azName[i]);
    if( z && z[0] ) blob_appendf(&p->url, "=%T", z);
    zSep = "&";
  }
  if( zName1 && zValue1 ){
    blob_appendf(&p->url, "%s%s=%T", zSep, zName1, zValue1);
    blob_appendf(&p->url, "%s%s", zSep, zName1);
    if( zValue1[0] ) blob_appendf(&p->url, "=%T", zValue1);
    zSep = "&";
  }
  if( zName2 && zValue2 ){
    blob_appendf(&p->url, "%s%s=%T", zSep, zName2, zValue2);
    blob_appendf(&p->url, "%s%s", zSep, zName2);
    if( zValue2[0] ) blob_appendf(&p->url, "=%T", zValue2);
  }
  return blob_str(&p->url);
}

/*
** Prompt the user for the password for g.urlUser.  Store the result
** in g.urlPasswd.
** Prompt the user for the password that corresponds to the "user" member of
** the provided UrlData structure.  Store the result into the "passwd" member
** of the provided UrlData structure.
*/
void url_prompt_for_password(void){
  if( isatty(fileno(stdin)) ){
void url_prompt_for_password_local(UrlData *pUrlData){
  if( pUrlData->isSsh || pUrlData->isFile ) return;
  if( fossil_isatty(fossil_fileno(stdin))
    char *zPrompt = mprintf("password for %s: ", g.urlUser);
    Blob x;
    prompt_for_password(zPrompt, &x, 0);
    free(zPrompt);
   && (pUrlData->flags & URL_PROMPT_PW)!=0
   && (pUrlData->flags & URL_PROMPTED)==0
  ){
    pUrlData->flags |= URL_PROMPTED;
    pUrlData->passwd = prompt_for_user_password(pUrlData->canonical);
    if( pUrlData->passwd[0]
     && (pUrlData->flags & (URL_REMEMBER|URL_ASK_REMEMBER_PW))!=0
    ){
      if( save_password_prompt(pUrlData->passwd) ){
    g.urlPasswd = mprintf("%b", &x);
    blob_reset(&x);
        pUrlData->flags |= URL_REMEMBER_PW;
      }else{
        pUrlData->flags &= ~URL_REMEMBER_PW;
      }
    }
  }else{
    fossil_fatal("missing or incorrect password for user \"%s\"",
                 g.urlUser);
                 pUrlData->user);
  }
}

/*
** Prompt the user for the password for g.url.user.  Store the result
** in g.url.passwd.
*/
void url_prompt_for_password(void){
  url_prompt_for_password_local(&g.url);
}

/*
** Remember the URL and password if requested.
*/
void url_remember(void){
  if( g.url.flags & URL_REMEMBER ){
    const char *url;
    if( g.url.useProxy ){
      url = g.url.proxyUrlCanonical;
    }else{
      url = g.url.canonical;
    }
    if( g.url.flags & URL_USE_PARENT ){
      db_set("parent-project-url", url, 0);
    }else{
      db_set("last-sync-url", url, 0);
    }
    if( g.url.user!=0 && g.url.passwd!=0 && ( g.url.flags & URL_REMEMBER_PW ) ){
      if( g.url.flags & URL_USE_PARENT ){
        db_set("parent-project-pw", obscure(g.url.passwd), 0);
      }else{
        db_set("last-sync-pw", obscure(g.url.passwd), 0);
      }
    }
  }
}

/* Preemptively prompt for a password if a username is given in the
** URL but no password.
*/
void url_get_password_if_needed(void){
  if( (g.url.user && g.url.user[0])
   && (g.url.passwd==0 || g.url.passwd[0]==0)
   && fossil_isatty(fossil_fileno(stdin))
  ){
    url_prompt_for_password();
  }
}

/*
** Given a URL for a remote repository clone point, try to come up with a
** reasonable basename of a local clone of that repository.
**
**    *  If the URL has a path, use the tail of the path, with any suffix
**       elided.
**
**    *  If the URL is just a domain name, without a path, then use the
**       first element of the domain name, except skip over "www." if
**       present and if there is a ".com" or ".org" or similar suffix.
**
** The string returned is obtained from fossil_malloc().  NULL might be
** returned if there is an error.
*/
char *url_to_repo_basename(const char *zUrl){
  const char *zTail = 0;
  int i;
  if( zUrl==0 ) return 0;
  for(i=0; zUrl[i]; i++){
    if( zUrl[i]=='?' ) break;
    if( (zUrl[i]=='/' || zUrl[i]=='@') && zUrl[i+1]!=0 ) zTail = &zUrl[i+1];
  }
  if( zTail==0 ) return 0;
  if( sqlite3_strnicmp(zTail, "www.", 4)==0 && strchr(zTail+4,'.')!=0 ){
    /* Remove the "www." prefix if there are more "." characters later.
    ** But don't remove the "www." prefix if what follows is the suffix.
    ** forum:/forumpost/74e111a2ee */
    zTail += 4;
  }
  if( zTail[0]==0 ) return 0;
  for(i=0; zTail[i] && zTail[i]!='.' && zTail[i]!='?' &&
           zTail[i]!=':' && zTail[i]!='/'; i++){}
  if( i==0 ) return 0;
  return mprintf("%.*s", i, zTail);
}

/*
** COMMAND: test-url-basename
** Usage: %fossil test-url-basenames URL ...
**
** This command is used for unit testing of the url_to_repo_basename()
** routine.  The command-line arguments are URL, presumably for remote
** Fossil repositories.  This command runs url_to_repo_basename() on each
** of those inputs and displays the result.
*/
void cmd_test_url_basename(void){
  int i;
  char *z;
  for(i=2; i<g.argc; i++){
    z = url_to_repo_basename(g.argv[i]);
    fossil_print("%s -> %s\n", g.argv[i], z);
    fossil_free(z);
  }
}
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**
** Commands and procedures used for creating, processing, editing, and
** querying information about users.
*/
#include "config.h"
#include "user.h"


/*
** Strip leading and trailing space from a string and add the string
** onto the end of a blob.
*/
static void strip_string(Blob *pBlob, char *z){
  int i;
  blob_reset(pBlob);
  while( isspace(*z) ){ z++; }
  while( fossil_isspace(*z) ){ z++; }
  for(i=0; z[i]; i++){
    if( z[i]=='\r' || z[i]=='\n' ){
       while( i>0 && isspace(z[i-1]) ){ i--; }
       while( i>0 && fossil_isspace(z[i-1]) ){ i--; }
       z[i] = 0;
       break;
    }
    if( z[i]<' ' ) z[i] = ' ';
    if( z[i]>0 && z[i]<' ' ) z[i] = ' ';
  }
  blob_append(pBlob, z, -1);
}

#if defined(_WIN32) || (defined(__BIONIC__) && !defined(FOSSIL_HAVE_GETPASS))
#ifdef __MINGW32__
#ifdef _WIN32
#include <conio.h>
#endif

/*
** getpass for Windows
** getpass() for Windows and Android.
*/
static char *zPwdBuffer = 0;
static size_t nPwdBuffer = 0;

static char *getpass(const char *prompt){
  static char pwd[64];
  char *zPwd;
  size_t nPwd;
  size_t i;
#if defined(_WIN32)
  int useGetch = _isatty(_fileno(stderr));
#endif

  if( zPwdBuffer==0 ){
    zPwdBuffer = fossil_secure_alloc_page(&nPwdBuffer);
    assert( zPwdBuffer );
  }else{
    fossil_secure_zero(zPwdBuffer, nPwdBuffer);
  }
  zPwd = zPwdBuffer;
  nPwd = nPwdBuffer;
  fputs(prompt,stderr);
  fflush(stderr);
  assert( zPwd!=0 );
  assert( nPwd>0 );
  for(i=0; i<sizeof(pwd)-1; ++i){
    pwd[i] = _getch();
    if(pwd[i]=='\r' || pwd[i]=='\n'){
  for(i=0; i<nPwd-1; ++i){
#if defined(_WIN32)
    zPwd[i] = useGetch ? _getch() : getc(stdin);
#else
    zPwd[i] = getc(stdin);
#endif
    if(zPwd[i]=='\r' || zPwd[i]=='\n'){
      break;
    }
    /* BS or DEL */
    else if(i>0 && (pwd[i]==8 || pwd[i]==127)){
    else if(i>0 && (zPwd[i]==8 || zPwd[i]==127)){
      i -= 2;
      continue;
    }
    /* CTRL-C */
    else if(pwd[i]==3) {
    else if(zPwd[i]==3) {
      i=0;
      break;
    }
    /* ESC */
    else if(pwd[i]==27){
    else if(zPwd[i]==27){
      i=0;
      break;
    }
    else{
#if defined(_WIN32)
      if( useGetch )
#endif
      fputc('*',stderr);
    }
  }
  pwd[i]='\0';
  zPwd[i]='\0';
  fputs("\n", stderr);
  assert( zPwd==zPwdBuffer );
  return pwd;
  return zPwd;
}
void freepass(){
  if( !zPwdBuffer ) return;
  assert( nPwdBuffer>0 );
  fossil_secure_free_page(zPwdBuffer, nPwdBuffer);
}
#endif

/*
** Scramble substitution matrix:
*/
static char aSubst[256];

/*
** Descramble the password
*/
static void userDescramble(char *z){
  int i;
  for(i=0; z[i]; i++) z[i] = aSubst[(unsigned char)z[i]];
}

/* Print a string in 5-letter groups */
static void printFive(const unsigned char *z){
  int i;
  for(i=0; z[i]; i++){
    if( i>0 && (i%5)==0 ) putchar(' ');
    putchar(z[i]);
  }
  putchar('\n');
}

/* Return a pseudo-random integer between 0 and N-1 */
static int randint(int N){
  unsigned char x;
  assert( N<256 );
  sqlite3_randomness(1, &x);
  return x % N;
}

/*
** Generate and print a random scrambling of letters a through z (omitting x)
** and set up the aSubst[] matrix to descramble.
*/
static void userGenerateScrambleCode(void){
  unsigned char zOrig[30];
  unsigned char zA[30];
  unsigned char zB[30];
  int nA = 25;
  int nB = 0;
  int i;
  memcpy(zOrig, "abcdefghijklmnopqrstuvwyz", nA+1);
  memcpy(zA, zOrig, nA+1);
  assert( nA==(int)strlen((char*)zA) );
  for(i=0; i<(int)sizeof(aSubst); i++) aSubst[i] = i;
  printFive(zA);
  while( nA>0 ){
    int x = randint(nA);
    zB[nB++] = zA[x];
    zA[x] = zA[--nA];
  }
  assert( nB==25 );
  zB[nB] = 0;
  printFive(zB);
  for(i=0; i<nB; i++) aSubst[zB[i]] = zOrig[i];
}

/*
** Return the value of the FOSSIL_SECURITY_LEVEL environment variable.
** Or return 0 if that variable does not exist.
*/
int fossil_security_level(void){
  const char *zLevel = fossil_getenv("FOSSIL_SECURITY_LEVEL");
  if( zLevel==0 ) return 0;
  return atoi(zLevel);
}


/*
** Do a single prompt for a passphrase.  Store the results in the blob.
**
**
** The return value is a pointer to a static buffer that is overwritten
** on subsequent calls to this same routine.
*/
static void prompt_for_passphrase(const char *zPrompt, Blob *pPassphrase){
  char *z;
#if 0
  */
  ** If the FOSSIL_PWREADER environment variable is set, then it will
  ** be the name of a program that prompts the user for their password/
  ** passphrase in a secure manner.  The program should take one or more
  ** arguments which are the prompts and should output the acquired
  ** passphrase as a single line on stdout.  This function will read the
  ** output using popen().
  **
  ** If FOSSIL_PWREADER is not set, or if it is not the name of an
  ** executable, then use the C-library getpass() routine.
  */
  const char *zProg = fossil_getenv("FOSSIL_PWREADER");
  if( zProg && zProg[0] ){
    static char zPass[100];
    Blob cmd;
    FILE *in;
    blob_zero(&cmd);
    blob_appendf(&cmd, "%s \"Fossil Passphrase\" \"%s\"", zProg, zPrompt);
    zPass[0] = 0;
    in = popen(blob_str(&cmd), "r");
    fgets(zPass, sizeof(zPass), in);
    pclose(in);
    blob_reset(&cmd);
    z = zPass;
  }else
#endif
  if( fossil_security_level()>=2 ){
    userGenerateScrambleCode();
  char *z = getpass(zPrompt);
    z = getpass(zPrompt);
    if( z ) userDescramble(z);
    printf("\033[3A\033[J");  /* Erase previous three lines */
    fflush(stdout);
  }else{
    z = getpass(zPrompt);
  }
  strip_string(pPassphrase, z);
}

/*
** Prompt the user for a password.  Store the result in the pPassphrase
** blob.
**
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  Blob secondTry;
  blob_zero(pPassphrase);
  blob_zero(&secondTry);
  while(1){
    prompt_for_passphrase(zPrompt, pPassphrase);
    if( verify==0 ) break;
    if( verify==1 && blob_size(pPassphrase)==0 ) break;
    prompt_for_passphrase("Again: ", &secondTry);
    prompt_for_passphrase("Retype new password: ", &secondTry);
    if( blob_compare(pPassphrase, &secondTry) ){
      printf("Passphrases do not match.  Try again...\n");
      fossil_print("Passphrases do not match.  Try again...\n");
    }else{
      break;
    }
  }
  blob_reset(&secondTry);
}

/*
** Prompt to save Fossil user password
*/
int save_password_prompt(const char *passwd){
  Blob x;
  char c;
  if( fossil_security_level()>=1 ) return 0;
  prompt_user("remember password (Y/n)? ", &x);
  c = blob_str(&x)[0];
  blob_reset(&x);
  return ( c!='n' && c!='N' );
}

/*
** Prompt for Fossil user password
*/
char *prompt_for_user_password(const char *zUser){
  char *zPrompt = mprintf("\rpassword for %s: ", zUser);
  char *zPw;
  Blob x;
  fossil_force_newline();
  prompt_for_password(zPrompt, &x, 0);
  free(zPrompt);
  zPw = mprintf("%b", &x);
  blob_reset(&x);
  return zPw;
}

/*
** Prompt the user to enter a single line of text.
*/
void prompt_user(const char *zPrompt, Blob *pIn){
  char *z;
  char zLine[1000];
  blob_zero(pIn);
  fossil_force_newline();
  printf("%s", zPrompt);
  fossil_print("%s", zPrompt);
  fflush(stdout);
  z = fgets(zLine, sizeof(zLine), stdin);
  if( z ){
    int n = (int)strlen(z);
    if( n>0 && z[n-1]=='\n' ) fossil_new_line_started();
    strip_string(pIn, z);
  }
}


/*
** COMMAND:  user
** COMMAND: user*
**
** Usage: %fossil user SUBCOMMAND ...  ?-R|--repository FILE?
** Usage: %fossil user SUBCOMMAND ...  ?-R|--repository REPO?
**
** Run various subcommands on users of the open repository or of
** the repository identified by the -R or --repository option.
**
**    %fossil user capabilities USERNAME ?STRING?
** > fossil user capabilities USERNAME ?STRING?
**
**        Query or set the capabilities for user USERNAME
**
** > fossil user contact USERNAME ?CONTACT-INFO?
**
**        Query or set contact information for user USERNAME
**
**    %fossil user default ?USERNAME?
** > fossil user default ?USERNAME?
**
**        Query or set the default user.  The default user is the
**        user for command-line interaction.
**
**    %fossil user list
** > fossil user list
** > fossil user ls
**
**        List all users known to the repository
**
**    %fossil user new ?USERNAME? ?CONTACT-INFO? ?PASSWORD?
** > fossil user new ?USERNAME? ?CONTACT-INFO? ?PASSWORD?
**
**        Create a new user in the repository.  Users can never be
**        deleted.  They can be denied all access but they must continue
**        to exist in the database.
**
**    %fossil user password USERNAME ?PASSWORD?
** > fossil user password USERNAME ?PASSWORD?
**
**        Change the web access password for a user.
*/
void user_cmd(void){
  int n;
  db_find_and_open_repository(1);
  db_find_and_open_repository(0, 0);
  if( g.argc<3 ){
    usage("capabilities|default|list|new|password ...");
    usage("capabilities|contact|default|list|new|password ...");
  }
  n = strlen(g.argv[2]);
  if( n>=2 && strncmp(g.argv[2],"new",n)==0 ){
    Blob passwd, login, contact;
    Blob passwd, login, caps, contact;
    char *zPw;
    blob_init(&caps, db_get("default-perms", 0), -1);

    if( g.argc>=4 ){
      blob_init(&login, g.argv[3], -1);
    }else{
      prompt_user("login: ", &login);
    }
    if( db_exists("SELECT 1 FROM user WHERE login=%B", &login) ){
      fossil_fatal("user %b already exists", &login);
    }
    if( g.argc>=5 ){
      blob_init(&contact, g.argv[4], -1);
    }else{
      prompt_user("contact-info: ", &contact);
    }
    if( g.argc>=6 ){
      blob_init(&passwd, g.argv[5], -1);
    }else{
      prompt_for_password("password: ", &passwd, 1);
    }
    zPw = sha1_shared_secret(blob_str(&passwd), blob_str(&login));
    zPw = sha1_shared_secret(blob_str(&passwd), blob_str(&login), 0);
    db_unprotect(PROTECT_USER);
    db_multi_exec(
      "INSERT INTO user(login,pw,cap,info)"
      "VALUES(%B,%Q,'v',%B)",
      &login, zPw, &contact
      "INSERT INTO user(login,pw,cap,info,mtime)"
      "VALUES(%B,%Q,%B,%B,now())",
      &login, zPw, &caps, &contact
    );
    db_protect_pop();
    free(zPw);
  }else if( n>=2 && strncmp(g.argv[2],"default",n)==0 ){
    user_select();
    if( g.argc==3 ){
      user_select();
      printf("%s\n", g.zLogin);
      fossil_print("%s\n", g.zLogin);
    }else{
      if( !db_exists("SELECT 1 FROM user WHERE login=%Q", g.argv[3]) ){
        fossil_fatal("no such user: %s", g.argv[3]);
      }
      if( g.localOpen ){
        db_lset("default-user", g.argv[3]);
      }else{
        db_set("default-user", g.argv[3], 0);
      }
    }
  }else if( n>=2 && strncmp(g.argv[2],"list",n)==0 ){
  }else if(( n>=2 && strncmp(g.argv[2],"list",n)==0 ) ||
           ( n>=2 && strncmp(g.argv[2],"ls",n)==0 )){
    Stmt q;
    db_prepare(&q, "SELECT login, info FROM user ORDER BY login");
    while( db_step(&q)==SQLITE_ROW ){
      printf("%-12s %s\n", db_column_text(&q, 0), db_column_text(&q, 1));
      fossil_print("%-12s %s\n", db_column_text(&q, 0), db_column_text(&q, 1));
    }
    db_finalize(&q);
  }else if( n>=2 && strncmp(g.argv[2],"password",2)==0 ){
    char *zPrompt;
    int uid;
    Blob pw;
    if( g.argc!=4 && g.argc!=5 ) usage("password USERNAME ?NEW-PASSWORD?");
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", g.argv[3]);
    if( uid==0 ){
      fossil_fatal("no such user: %s", g.argv[3]);
    }
    if( g.argc==5 ){
      blob_init(&pw, g.argv[4], -1);
    }else{
      zPrompt = mprintf("new passwd for %s: ", g.argv[3]);
      zPrompt = mprintf("New password for %s: ", g.argv[3]);
      prompt_for_password(zPrompt, &pw, 1);
    }
    if( blob_size(&pw)==0 ){
      printf("password unchanged\n");
      fossil_print("password unchanged\n");
    }else{
      char *zSecret = sha1_shared_secret(blob_str(&pw), g.argv[3]);
      db_multi_exec("UPDATE user SET pw=%Q WHERE uid=%d", zSecret, uid);
      char *zSecret = sha1_shared_secret(blob_str(&pw), g.argv[3], 0);
      db_unprotect(PROTECT_USER);
      db_multi_exec("UPDATE user SET pw=%Q, mtime=now() WHERE uid=%d",
                    zSecret, uid);
      db_protect_pop();
      free(zSecret);
    }
  }else if( n>=2 && strncmp(g.argv[2],"capabilities",2)==0 ){
    int uid;
    if( g.argc!=4 && g.argc!=5 ){
      usage("user capabilities USERNAME ?PERMISSIONS?");
      usage("capabilities USERNAME ?PERMISSIONS?");
    }
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", g.argv[3]);
    if( uid==0 ){
      fossil_fatal("no such user: %s", g.argv[3]);
    }
    if( g.argc==5 ){
      db_unprotect(PROTECT_USER);
      db_multi_exec(
        "UPDATE user SET cap=%Q, mtime=now() WHERE uid=%d",
        g.argv[4], uid
      );
      db_protect_pop();
    }
    fossil_print("%s\n", db_text(0, "SELECT cap FROM user WHERE uid=%d", uid));
  }else if( n>=2 && strncmp(g.argv[2], "contact", 2)==0 ){
    int uid;
    if( g.argc!=4 && g.argc!=5 ){
      usage("contact USERNAME ?CONTACT-INFO?");
    }
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", g.argv[3]);
    if( uid==0 ){
      fossil_fatal("no such user: %s", g.argv[3]);
    }
    if( g.argc==5 ){
      db_unprotect(PROTECT_USER);
      db_multi_exec(
        "UPDATE user SET cap=%Q WHERE uid=%d", g.argv[4],
        uid
        "UPDATE user SET info=%Q, mtime=now() WHERE uid=%d",
        g.argv[4], uid
      );
      db_protect_pop();
    }
    printf("%s\n", db_text(0, "SELECT cap FROM user WHERE uid=%d", uid));
    fossil_print("%s\n", db_text(0, "SELECT info FROM user WHERE uid=%d", uid));
  }else{
    fossil_panic("user subcommand should be one of: "
                 "capabilities default list new password");
    fossil_fatal("user subcommand should be one of: "
                 "capabilities contact default list new password");
  }
}

/*
** Attempt to set the user to zLogin
*/
static int attempt_user(const char *zLogin){
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**
**   (1)  Use the --user and -U command-line options.
**
**   (2)  If the local database is open, check in VVAR.
**
**   (3)  Check the default user in the repository
**
**   (4)  Try the FOSSIL_USER environment variable.
**
**   (4)  Try the USER environment variable.
**   (5)  Try the USER environment variable.
**
**   (6)  Try the LOGNAME environment variable.
**
**   (5)  Use the first user in the USER table.
**   (7)  Try the USERNAME environment variable.
**
**   (8)  Check if the user can be extracted from the remote URL.
**
** The user name is stored in g.zLogin.  The uid is in g.userUid.
*/
void user_select(void){
  Stmt s;

  UrlData url;
  if( g.userUid ) return;
  if( g.zLogin ){
  if( attempt_user(g.zLogin) ) return;
    if( attempt_user(g.zLogin)==0 ){
      fossil_fatal("no such user: %s", g.zLogin);
    }else{
      return;
    }
  }

  if( g.localOpen && attempt_user(db_lget("default-user",0)) ) return;

  if( attempt_user(db_get("default-user", 0)) ) return;

  if( attempt_user(fossil_getenv("FOSSIL_USER")) ) return;

  if( attempt_user(getenv("USER")) ) return;
  if( attempt_user(fossil_getenv("USER")) ) return;

  if( attempt_user(fossil_getenv("LOGNAME")) ) return;
  db_prepare(&s,
    "SELECT uid, login FROM user"
    " WHERE login NOT IN ('anonymous','nobody','reader','developer')"

  if( attempt_user(fossil_getenv("USERNAME")) ) return;

  memset(&url, 0, sizeof(url));
  url_parse_local(0, URL_USE_CONFIG, &url);
  if( url.user && attempt_user(url.user) ) return;

  fossil_print(
    "Cannot figure out who you are!  Consider using the --user\n"
    "command line option, setting your USER environment variable,\n"
    "or setting a default user with \"fossil user default USER\".\n"
  );
  if( db_step(&s)==SQLITE_ROW ){
    g.userUid = db_column_int(&s, 0);
  fossil_fatal("cannot determine user");
    g.zLogin = mprintf("%s", db_column_text(&s, 1));
  }
  db_finalize(&s);

  if( g.userUid==0 ){
}

/*
** COMMAND: test-usernames
**
** Usage: %fossil test-usernames
**
** Print details about sources of fossil usernames.
    db_prepare(&s, "SELECT uid, login FROM user");
    if( db_step(&s)==SQLITE_ROW ){
      g.userUid = db_column_int(&s, 0);
*/
void test_usernames_cmd(void){
      g.zLogin = mprintf("%s", db_column_text(&s, 1));
    }
    db_finalize(&s);
  }

  if( g.userUid==0 ){
    db_multi_exec(
      "INSERT INTO user(login, pw, cap, info)"
      "VALUES('anonymous', '', 'cfghjkmnoqw', '')"
    );
    g.userUid = db_last_insert_rowid();
    g.zLogin = "anonymous";
  }
}
  db_find_and_open_repository(0, 0);

  fossil_print("Initial g.zLogin: %s\n", g.zLogin);
  fossil_print("Initial g.userUid: %d\n", g.userUid);
  fossil_print("check-out default-user: %s\n", g.localOpen ?
               db_lget("default-user","") : "<<no open check-out>>");
  fossil_print("default-user: %s\n", db_get("default-user",""));
  fossil_print("FOSSIL_USER: %s\n", fossil_getenv("FOSSIL_USER"));
  fossil_print("USER: %s\n", fossil_getenv("USER"));
  fossil_print("LOGNAME: %s\n", fossil_getenv("LOGNAME"));
  fossil_print("USERNAME: %s\n", fossil_getenv("USERNAME"));
  url_parse(0, URL_USE_CONFIG);
  fossil_print("URL user: %s\n", g.url.user);
  user_select();
  fossil_print("Final g.zLogin: %s\n", g.zLogin);
  fossil_print("Final g.userUid: %d\n", g.userUid);
}


/*
** Make sure the USER table is up-to-date.  It should contain
** Compute the shared secret for a user.
** the "JX" column (as of version 2.21).  If it does not, add it.
**
** The "JX" column is intended to hold a JSON object containing optional
** key-value pairs.
*/
static void user_sha1_shared_secret_func(
void user_update_user_table(void){
  sqlite3_context *context,
  int argc,
  sqlite3_value **argv
){
  char *zPw;
  if( db_table_has_column("repository","user","jx")==0 ){
  char *zLogin;
  assert( argc==2 );
    db_multi_exec("ALTER TABLE repository.user"
  zPw = (char*)sqlite3_value_text(argv[0]);
  zLogin = (char*)sqlite3_value_text(argv[1]);
  if( zPw && zLogin ){ 
    sqlite3_result_text(context, sha1_shared_secret(zPw, zLogin), -1, free);
                  " ADD COLUMN jx TEXT DEFAULT '{}';");
  }
}

/*
** COMMAND: test-hash-passwords
**
** Usage: %fossil test-hash-passwords REPOSITORY
**
** Convert all local password storage to use a SHA1 hash of the password
** rather than cleartext.  Passwords that are already stored as the SHA1
** has are unchanged.
*/
void user_hash_passwords_cmd(void){
  if( g.argc!=3 ) usage("REPOSITORY");
  db_open_repository(g.argv[2]);
  sqlite3_create_function(g.db, "sha1_shared_secret", 2, SQLITE_UTF8, 0,
                          user_sha1_shared_secret_func, 0, 0);
  sqlite3_create_function(g.db, "shared_secret", 2, SQLITE_UTF8, 0,
                          sha1_shared_secret_sql_function, 0, 0);
  db_unprotect(PROTECT_ALL);
  db_multi_exec(
    "UPDATE user SET pw=sha1_shared_secret(pw,login)"
    "UPDATE user SET pw=shared_secret(pw,login), mtime=now()"
    " WHERE length(pw)>0 AND length(pw)!=40"
  );
}

/*
** Ensure that the password for a user is hashed.
*/
void hash_user_password(const char *zUser){
  sqlite3_create_function(g.db, "shared_secret", 2, SQLITE_UTF8, 0,
                          sha1_shared_secret_sql_function, 0, 0);
  db_unprotect(PROTECT_USER);
  db_multi_exec(
    "UPDATE user SET pw=shared_secret(pw,login), mtime=now()"
    " WHERE login=%Q AND length(pw)>0 AND length(pw)!=40", zUser
  );
  db_protect_pop();
}

/*
** COMMAND: test-prompt-user
**
** Usage: %fossil test-prompt-user PROMPT
**
** Prompts the user for input and then prints it verbatim (i.e. without
** a trailing line terminator).
*/
void test_prompt_user_cmd(void){
  Blob answer;
  if( g.argc!=3 ) usage("PROMPT");
  prompt_user(g.argv[2], &answer);
  fossil_print("%s\n", blob_str(&answer));
}

/*
** COMMAND: test-prompt-password
**
** Usage: %fossil test-prompt-password PROMPT VERIFY
**
** Prompts the user for a password and then prints it verbatim.
**
** Behavior is controlled by the VERIFY parameter:
**
**     0     Just ask once.
**
**     1     If the first answer is a non-empty string, ask for
**           verification.  Repeat if the two strings do not match.
**
**     2     Ask twice, repeat if the strings do not match.

*/
void test_prompt_password_cmd(void){
  Blob answer;
  int iVerify = 0;
  if( g.argc!=4 ) usage("PROMPT VERIFY");
  iVerify = atoi(g.argv[3]);
  prompt_for_password(g.argv[2], &answer, iVerify);
  fossil_print("[%s]\n", blob_str(&answer));
}

/*
** WEBPAGE: access_log
** WEBPAGE: user_log
**
** Show login attempts, including timestamp and IP address.
** Requires Admin privileges.
**
** Query parameters:
**
**    y=N      1: success only.  2: failure only.  3: both (default: 3)
**    n=N      Number of entries to show (default: 200)
**    o=N      Skip this many entries (default: 0)
*/
void user_log_page(void){
  int y = atoi(PD("y","3"));
  int n = atoi(PD("n","200"));
  int skip = atoi(PD("o","0"));
  const char *zUser = P("u");
  Blob sql;
  Stmt q;
  int cnt = 0;
  int rc;
  int fLogEnabled;

  login_check_credentials();
  if( !g.perm.Admin ){ login_needed(0); return; }
  create_accesslog_table();


  if( P("delall") && P("delallbtn") ){
    db_multi_exec("DELETE FROM accesslog");
    cgi_redirectf("%R/user_log?y=%d&n=%d&o=%o", y, n, skip);
    return;
  }
  if( P("delanon") && P("delanonbtn") ){
    db_multi_exec("DELETE FROM accesslog WHERE uname='anonymous'");
    cgi_redirectf("%R/user_log?y=%d&n=%d&o=%o", y, n, skip);
    return;
  }
  if( P("delfail") && P("delfailbtn") ){
    db_multi_exec("DELETE FROM accesslog WHERE NOT success");
    cgi_redirectf("%R/user_log?y=%d&n=%d&o=%o", y, n, skip);
    return;
  }
  if( P("delold") && P("deloldbtn") ){
    db_multi_exec("DELETE FROM accesslog WHERE rowid in"
                  "(SELECT rowid FROM accesslog ORDER BY rowid DESC"
                  " LIMIT -1 OFFSET 200)");
    cgi_redirectf("%R/user_log?y=%d&n=%d", y, n);
    return;
  }
  style_header("User Log");
  style_submenu_element("Log-Menu", "setup-logmenu");

  blob_zero(&sql);
  blob_append_sql(&sql,
    "SELECT uname, ipaddr, datetime(mtime,toLocal()), success"
    "  FROM accesslog"
  );
  if( zUser ){
    blob_append_sql(&sql, "  WHERE uname=%Q", zUser);
    n = 1000000000;
    skip = 0;
  }else if( y==1 ){
    blob_append(&sql, "  WHERE success", -1);
  }else if( y==2 ){
    blob_append(&sql, "  WHERE NOT success", -1);
  }
  blob_append_sql(&sql,"  ORDER BY rowid DESC LIMIT %d OFFSET %d", n+1, skip);
  if( skip ){
    style_submenu_element("Newer", "%R/user_log?o=%d&n=%d&y=%d",
              skip>=n ? skip-n : 0, n, y);
  }
  rc = db_prepare_ignore_error(&q, "%s", blob_sql_text(&sql));
  fLogEnabled = db_get_boolean("access-log", 0);
  @ <div align="center">User logging is %s(fLogEnabled?"on":"off").
  @ (Change this on the <a href="setup_settings">settings</a> page.)</div>
  @ <table border="1" cellpadding="5" class="sortable" align="center" \
  @  data-column-types='Ttt' data-init-sort='1'>
  @ <thead><tr><th width="33%%">Date</th><th width="34%%">User</th>
  @ <th width="33%%">IP Address</th></tr></thead><tbody>
  while( rc==SQLITE_OK && db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zIP = db_column_text(&q, 1);
    const char *zDate = db_column_text(&q, 2);
    int bSuccess = db_column_int(&q, 3);
    cnt++;
    if( cnt>n ){
      style_submenu_element("Older", "%R/user_log?o=%d&n=%d&y=%d",
                  skip+n, n, y);
      break;
    }
    if( bSuccess ){
      @ <tr>
    }else{
      @ <tr bgcolor="#ffacc0">
    }
    @ <td>%s(zDate)</td><td>%h(zName)</td><td>%h(zIP)</td></tr>
  }
  if( skip>0 || cnt>n ){
    style_submenu_element("All", "%R/user_log?n=10000000");
  }
  @ </tbody></table>
  db_finalize(&q);
  @ <hr>
  @ <form method="post" action="%R/user_log">
  @ <label><input type="checkbox" name="delold">
  @ Delete all but the most recent 200 entries</input></label>
  @ <input type="submit" name="deloldbtn" value="Delete"></input>
  @ </form>
  @ <form method="post" action="%R/user_log">
  @ <label><input type="checkbox" name="delanon">
  @ Delete all entries for user "anonymous"</input></label>
  @ <input type="submit" name="delanonbtn" value="Delete"></input>
  @ </form>
  @ <form method="post" action="%R/user_log">
  @ <label><input type="checkbox" name="delfail">
  @ Delete all failed login attempts</input></label>
  @ <input type="submit" name="delfailbtn" value="Delete"></input>
  @ </form>
  @ <form method="post" action="%R/user_log">
  @ <label><input type="checkbox" name="delall">
  @ Delete all entries</input></label>
  @ <input type="submit" name="delallbtn" value="Delete"></input>
  @ </form>
  style_table_sorter();
  style_finish_page();
}
Added src/useredit.js.






































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/* This script accompanies the /setup_uedit web page.  Its job is to keep
** the check-boxes with user capabilities up-to-date with the capability
** string.
**
** The capability string is stored in #usetupEditCapability
*/
function updateCapabilityString(){
  try {
    var inputs = document.getElementsByTagName('input');
    if( inputs && inputs.length ){
      var output = document.getElementById('usetupEditCapability');
      if( output ){
        var permsIds = [], x = 0;
        for(var i = 0; i < inputs.length; i++){
          var e = inputs[i];
          if( !e.name || !e.type ) continue;
          if( e.type.toLowerCase()!=='checkbox' ) continue;
          if( e.name.length===2 && e.name[0]==='a' ){
            // looks like a capability checkbox
            e.onchange = updateCapabilityString;
            if( e.checked ){
              // grab the second character of the element
              // name, which is the textual flag for this
              // capability, and then add it to the result
              // array.
              permsIds[x++] = e.name[1];
            }
          }
        }
        permsIds.sort();
        output.innerHTML = permsIds.join('');
      }
    }
  } catch (e) {
    /* ignore errors */
  }
}
updateCapabilityString();
Added src/utf8.c.



























































































































































































































































































































































































































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/*
** Copyright (c) 2012 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains utilities for converting text between UTF-8 (which
** is always used internally) and whatever encodings are used by the underlying
** filesystem and operating system.
*/
#include "config.h"
#include "utf8.h"
#include <sqlite3.h>
#ifdef _WIN32
# include <windows.h>
#endif
#include "cygsup.h"

#if defined(_WIN32) || defined(__CYGWIN__)
/*
** Translate MBCS to UTF-8.  Return a pointer to the translated text.
** Call fossil_mbcs_free() to deallocate any memory used to store the
** returned pointer when done.
*/
char *fossil_mbcs_to_utf8(const char *zMbcs){
  extern char *sqlite3_win32_mbcs_to_utf8(const char*);
  return sqlite3_win32_mbcs_to_utf8(zMbcs);
}

/*
** After translating from UTF-8 to MBCS, invoke this routine to deallocate
** any memory used to hold the translation
*/
void fossil_mbcs_free(char *zOld){
  sqlite3_free(zOld);
}
#endif /* _WIN32 */

/*
** Translate Unicode text into UTF-8.
** Return a pointer to the translated text.
** Call fossil_unicode_free() to deallocate any memory used to store the
** returned pointer when done.
*/
char *fossil_unicode_to_utf8(const void *zUnicode){
#if defined(_WIN32) || defined(__CYGWIN__)
  int nByte = WideCharToMultiByte(CP_UTF8, 0, zUnicode, -1, 0, 0, 0, 0);
  char *zUtf = fossil_malloc( nByte );
  WideCharToMultiByte(CP_UTF8, 0, zUnicode, -1, zUtf, nByte, 0, 0);
  return zUtf;
#else
  static Stmt q;
  char *zUtf8;
  db_static_prepare(&q, "SELECT :utf8");
  db_bind_text16(&q, ":utf8", zUnicode);
  db_step(&q);
  zUtf8 = fossil_strdup(db_column_text(&q, 0));
  db_reset(&q);
  return zUtf8;
#endif
}

/*
** Translate UTF-8 to unicode for use in system calls.  Return a pointer to the
** translated text..  Call fossil_unicode_free() to deallocate any memory
** used to store the returned pointer when done.
*/
void *fossil_utf8_to_unicode(const char *zUtf8){
#if defined(_WIN32) || defined(__CYGWIN__)
  int nByte = MultiByteToWideChar(CP_UTF8, 0, zUtf8, -1, 0, 0);
  wchar_t *zUnicode = fossil_malloc( nByte*2 );
  MultiByteToWideChar(CP_UTF8, 0, zUtf8, -1, zUnicode, nByte);
  return zUnicode;
#else
  assert( 0 );  /* Never used in unix */
  return fossil_strdup(zUtf8);  /* TODO: implement for unix */
#endif
}

/*
** Deallocate any memory that was previously allocated by
** fossil_unicode_to_utf8() or fossil_utf8_to_unicode().
*/
void fossil_unicode_free(void *pOld){
  fossil_free(pOld);
}

#if defined(__APPLE__) && !defined(WITHOUT_ICONV)
# include <iconv.h>
#endif

/*
** Translate text from the filename character set into UTF-8.
** Return a pointer to the translated text.
** Call fossil_path_free() to deallocate any memory used to store the
** returned pointer when done.
**
** This function must not convert '\' to '/' on windows/cygwin, as it is
** used in places where we are not sure it's really filenames we are handling,
** e.g. fossil_getenv() or handling the argv arguments from main().
**
** On Windows, translate some characters in the in the range
** U+F001 - U+F07F (private use area) to ASCII. Cygwin sometimes
** generates such filenames. See:
** <http://cygwin.com/cygwin-ug-net/using-specialnames.html>
*/
char *fossil_path_to_utf8(const void *zPath){
#if defined(_WIN32)
  int nByte = WideCharToMultiByte(CP_UTF8, 0, zPath, -1, 0, 0, 0, 0);
  char *zUtf = sqlite3_malloc( nByte );
  char *pUtf, *qUtf;
  if( zUtf==0 ){
    return 0;
  }
  WideCharToMultiByte(CP_UTF8, 0, zPath, -1, zUtf, nByte, 0, 0);
  pUtf = qUtf = zUtf;
  while( *pUtf ) {
    if( *pUtf == (char)0xef ){
      wchar_t c = ((pUtf[1]&0x3f)<<6)|(pUtf[2]&0x3f);
      /* Only really convert it when the resulting char is in range. */
      if( c && ((c < ' ') || wcschr(L"\"*:<>?|", c)) ){
        *qUtf++ = c; pUtf+=3; continue;
      }
    }
    *qUtf++ = *pUtf++;
  }
  *qUtf = 0;
  return zUtf;
#elif defined(__CYGWIN__)
  char *zOut;
  zOut = fossil_strdup(zPath);
  return zOut;
#elif defined(__APPLE__) && !defined(WITHOUT_ICONV)
  char *zIn = (char*)zPath;
  char *zOut;
  iconv_t cd;
  size_t n, x;
  for(n=0; zIn[n]>0 && zIn[n]<=0x7f; n++){}
  if( zIn[n]!=0 && (cd = iconv_open("UTF-8", "UTF-8-MAC"))!=(iconv_t)-1 ){
    char *zOutx;
    char *zOrig = zIn;
    size_t nIn, nOutx;
    nIn = n = strlen(zIn);
    nOutx = nIn+100;
    zOutx = zOut = fossil_malloc( nOutx+1 );
    x = iconv(cd, &zIn, &nIn, &zOutx, &nOutx);
    if( x==(size_t)-1 ){
      fossil_free(zOut);
      zOut = fossil_strdup(zOrig);
    }else{
      zOut[n+100-nOutx] = 0;
    }
    iconv_close(cd);
  }else{
    zOut = fossil_strdup(zPath);
  }
  return zOut;
#else
  return (char *)zPath;  /* No-op on non-mac unix */
#endif
}

/*
** Translate text from UTF-8 to the filename character set.
** Return a pointer to the translated text.
** Call fossil_path_free() to deallocate any memory used to store the
** returned pointer when done.
**
** On Windows, characters in the range U+0001 to U+0031 and the
** characters '"', '*', ':', '<', '>', '?' and '|' are invalid
** to be used, except in the 'extended path' prefix ('?') and
** as drive specifier (':'). Therefore, translate those to characters
** in the range U+F001 - U+F07F (private use area), so those
** characters never arrive in any Windows API. The filenames might
** look strange in Windows explorer, but in the cygwin shell
** everything looks as expected.
**
** See: <http://cygwin.com/cygwin-ug-net/using-specialnames.html>
**
*/
void *fossil_utf8_to_path(const char *zUtf8, int isDir){
#ifdef _WIN32
  int nReserved = isDir ? 12 : 0; /* For dir, need room for "FILENAME.EXT" */
  int nChar = MultiByteToWideChar(CP_UTF8, 0, zUtf8, -1, 0, 0);
  /* Overallocate 6 chars, making some room for extended paths */
  wchar_t *zUnicode = sqlite3_malloc( (nChar+6) * sizeof(wchar_t) );
  wchar_t *wUnicode = zUnicode;
  if( zUnicode==0 ){
    return 0;
  }
  MultiByteToWideChar(CP_UTF8, 0, zUtf8, -1, zUnicode, nChar);
  /*
  ** If path starts with "//?/" or "\\?\" (extended path), translate
  ** any slashes to backslashes but leave the '?' intact
  */
  if( (zUtf8[0]=='\\' || zUtf8[0]=='/') && (zUtf8[1]=='\\' || zUtf8[1]=='/')
           && zUtf8[2]=='?' && (zUtf8[3]=='\\' || zUtf8[3]=='/')) {
    wUnicode[0] = wUnicode[1] = wUnicode[3] = '\\';
    zUtf8 += 4;
    wUnicode += 4;
  }
  /*
  ** If there is no "\\?\" prefix but there is a drive or UNC
  ** path prefix and the path is larger than MAX_PATH chars,
  ** no Win32 API function can handle that unless it is
  ** prefixed with the extended path prefix. See:
  ** <http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx#maxpath>
  **/
  if( fossil_isalpha(zUtf8[0]) && zUtf8[1]==':'
           && (zUtf8[2]=='\\' || zUtf8[2]=='/') ){
    if( wUnicode==zUnicode && (nChar+nReserved)>MAX_PATH){
      memmove(wUnicode+4, wUnicode, nChar*sizeof(wchar_t));
      memcpy(wUnicode, L"\\\\?\\", 4*sizeof(wchar_t));
      wUnicode += 4;
    }
    /*
    ** If (remainder of) path starts with "<drive>:/" or "<drive>:\",
    ** leave the ':' intact but translate the backslash to a slash.
    */
    wUnicode[2] = '\\';
    wUnicode += 3;
  }else if( wUnicode==zUnicode && (nChar+nReserved)>MAX_PATH
            && (zUtf8[0]=='\\' || zUtf8[0]=='/')
            && (zUtf8[1]=='\\' || zUtf8[1]=='/') && zUtf8[2]!='?'){
    memmove(wUnicode+6, wUnicode, nChar*sizeof(wchar_t));
    memcpy(wUnicode, L"\\\\?\\UNC", 7*sizeof(wchar_t));
    wUnicode += 7;
  }
  /*
  ** In the remainder of the path, translate invalid characters to
  ** characters in the Unicode private use area. This is what makes
  ** Win32 fossil.exe work well in a Cygwin environment even when a
  ** filename contains characters which are invalid for Win32.
  */
  while( *wUnicode != '\0' ){
    if( (*wUnicode < ' ') || wcschr(L"\"*:<>?|", *wUnicode) ){
      *wUnicode |= 0xF000;
    }else if( *wUnicode == '/' ){
      *wUnicode = '\\';
    }
    ++wUnicode;
  }
  return zUnicode;
#elif defined(__CYGWIN__)
  char *zPath, *p;
  if( fossil_isalpha(zUtf8[0]) && (zUtf8[1]==':')
      && (zUtf8[2]=='\\' || zUtf8[2]=='/')) {
    /* win32 absolute path starting with drive specifier. */
    int nByte;
    wchar_t zUnicode[2000];
    wchar_t *wUnicode = zUnicode;
    MultiByteToWideChar(CP_UTF8, 0, zUtf8, -1, zUnicode, count(zUnicode));
    while( *wUnicode != '\0' ){
      if( *wUnicode == '/' ){
        *wUnicode = '\\';
      }
      ++wUnicode;
    }
    nByte = cygwin_conv_path(CCP_WIN_W_TO_POSIX, zUnicode, NULL, 0);
    zPath = fossil_malloc(nByte);
    cygwin_conv_path(CCP_WIN_W_TO_POSIX, zUnicode, zPath, nByte);
  }else{
    zPath = fossil_strdup(zUtf8);
    zUtf8 = p = zPath;
    while( (*p = *zUtf8++) != 0){
      if( *p++ == '\\' ) {
        p[-1] = '/';
      }
    }
  }
  return zPath;
#elif defined(__APPLE__) && !defined(WITHOUT_ICONV)
  return fossil_strdup(zUtf8);
#else
  return (void *)zUtf8;  /* No-op on unix */
#endif
}

/*
** Deallocate any memory that was previously allocated by
** fossil_path_to_utf8() or fossil_utf8_to_path().
*/
void fossil_path_free(void *pOld){
#if defined(_WIN32)
  sqlite3_free(pOld);
#elif (defined(__APPLE__) && !defined(WITHOUT_ICONV)) || defined(__CYGWIN__)
  fossil_free(pOld);
#else
  /* No-op on all other unix */
#endif
}

/*
** For a given index in a UTF-8 string, return the nearest index that is the
** start of a new code point. The returned index is equal or lower than the
** given index. The end of the string (the null-terminator) is considered a
** valid start index. The given index is returned unchanged if the string
** contains invalid UTF-8 (i.e. overlong runs of trail bytes).
** This function is useful to find code point boundaries for truncation, for
** example, so that no incomplete UTF-8 sequences are left at the end of the
** truncated string.
** This function does not attempt to keep logical and/or visual constructs
** spanning across multiple code points intact, that is no attempts are made
** keep combining characters together with their base characters, or to keep
** more complex grapheme clusters intact.
*/
#define IsUTF8TrailByte(c) ( (c&0xc0)==0x80 )
int utf8_nearest_codepoint(const char *zString, int maxByteIndex){
  int i,n;
  for( n=0, i=maxByteIndex; n<4 && i>=0; n++, i-- ){
    if( !IsUTF8TrailByte(zString[i]) ) return i;
  }
  return maxByteIndex;
}

/*
** Find the byte index corresponding to the given code point index in a UTF-8
** string. If the string contains fewer than the given number of code points,
** the index of the end of the string (the null-terminator) is returned.
** Incomplete, ill-formed and overlong sequences are counted as one sequence.
** The invalid lead bytes 0xC0 to 0xC1 and 0xF5 to 0xF7 are allowed to initiate
** (ill-formed) 2- and 4-byte sequences, respectively, the other invalid lead
** bytes 0xF8 to 0xFF are treated as invalid 1-byte sequences (as lone trail
** bytes).
*/
int utf8_codepoint_index(const char *zString, int nCodePoint){
  int i;       /* Counted bytes. */
  int lenUTF8; /* Counted UTF-8 sequences. */
  if( zString==0 ) return 0;
  for(i=0, lenUTF8=0; zString[i]!=0 && lenUTF8<nCodePoint; i++, lenUTF8++){
    char c = zString[i];
    int cchUTF8=1; /* Code units consumed. */
    int maxUTF8=1; /* Expected sequence length. */
    if( (c&0xe0)==0xc0 )maxUTF8=2;          /* UTF-8 lead byte 110vvvvv */
    else if( (c&0xf0)==0xe0 )maxUTF8=3;     /* UTF-8 lead byte 1110vvvv */
    else if( (c&0xf8)==0xf0 )maxUTF8=4;     /* UTF-8 lead byte 11110vvv */
    while( cchUTF8<maxUTF8 &&
            (zString[i+1]&0xc0)==0x80 ){    /* UTF-8 trail byte 10vvvvvv */
      cchUTF8++;
      i++;
    }
  }
  return i;
}

/*
** Display UTF-8 on the console.  Return the number of
** Characters written. If stdout or stderr is redirected
** to a file, -1 is returned and nothing is written
** to the console.
*/
#ifdef _WIN32
int fossil_utf8_to_console(
  const char *zUtf8,
  int nByte,
  int toStdErr
){
  int nChar, written = 0;
  wchar_t *zUnicode; /* Unicode version of zUtf8 */
  DWORD dummy;
  Blob blob;

  static int istty[2] = { -1, -1 };
  assert( toStdErr==0 || toStdErr==1 );
  if( istty[toStdErr]==-1 ){
    istty[toStdErr] = _isatty(toStdErr + 1) != 0;
  }
  if( !istty[toStdErr] ){
    /* stdout/stderr is not a console. */
    return -1;
  }

  /* If blob to be written to the Windows console is not
   * UTF-8, convert it to UTF-8 first.
   */
  blob_init(&blob, zUtf8, nByte);
  blob_to_utf8_no_bom(&blob, 1);
  nChar = MultiByteToWideChar(CP_UTF8, 0, blob_buffer(&blob),
      blob_size(&blob), NULL, 0);
  zUnicode = fossil_malloc( (nChar+1)*sizeof(zUnicode[0]) );
  if( zUnicode==0 ){
    return 0;
  }
  nChar = MultiByteToWideChar(CP_UTF8, 0, blob_buffer(&blob),
      blob_size(&blob), zUnicode, nChar);
  blob_reset(&blob);
  /* Split WriteConsoleW output into multiple chunks, if necessary.  See:
   * <https://connect.microsoft.com/VisualStudio/feedback/details/635230> */
  while( written<nChar ){
    int size = nChar-written;
    if( size>26000 ) size = 26000;
    WriteConsoleW(GetStdHandle(
        toStdErr ? STD_ERROR_HANDLE : STD_OUTPUT_HANDLE),
        zUnicode + written, size, &dummy, 0);
    written += size;
  }
  fossil_free(zUnicode);
  return nChar;
}
#endif
Added src/util.c.












































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code for miscellaneous utility routines.
*/
#include "config.h"
#include "util.h"
#if defined(USE_MMAN_H)
# include <sys/mman.h>
# include <unistd.h>
#endif
#include <math.h>

/*
** For the fossil_timer_xxx() family of functions...
*/
#ifdef _WIN32
# include <windows.h>
# include <io.h>
#else
# include <sys/time.h>
# include <sys/resource.h>
# include <sys/types.h>
# include <sys/stat.h>
# include <unistd.h>
# include <fcntl.h>
# include <errno.h>
#endif

/*
** Returns the same as the platform's isatty() or _isatty() function.
*/
int fossil_isatty(int fd){
#ifdef _WIN32
  return _isatty(fd);
#else
  return isatty(fd);
#endif
}

/*
** Returns the same as the platform's fileno() or _fileno() function.
*/
int fossil_fileno(FILE *p){
#ifdef _WIN32
  return _fileno(p);
#else
  return fileno(p);
#endif
}

/*
** Exit.  Take care to close the database first.
*/
NORETURN void fossil_exit(int rc){
  db_close(1);
#ifndef _WIN32
  if( g.fAnyTrace ){
    fprintf(stderr, "/***** Subprocess %d exit(%d) *****/\n", getpid(), rc);
    fflush(stderr);
  }
#endif
  exit(rc);
}

/*
** Malloc and free routines that cannot fail
*/
void *fossil_malloc(size_t n){
  void *p = malloc(n==0 ? 1 : n);
  if( p==0 ) fossil_fatal("out of memory");
  return p;
}
void *fossil_malloc_zero(size_t n){
  void *p = malloc(n==0 ? 1 : n);
  if( p==0 ) fossil_fatal("out of memory");
  memset(p, 0, n);
  return p;
}
void fossil_free(void *p){
  free(p);
}
void *fossil_realloc(void *p, size_t n){
  p = realloc(p, n);
  if( p==0 ) fossil_fatal("out of memory");
  return p;
}
void fossil_secure_zero(void *p, size_t n){
  volatile unsigned char *vp = (volatile unsigned char *)p;
  size_t i;

  if( p==0 ) return;
  assert( n>0 );
  if( n==0 ) return;
  for(i=0; i<n; i++){ vp[i] ^= 0xFF; }
  for(i=0; i<n; i++){ vp[i] ^= vp[i]; }
}
void fossil_get_page_size(size_t *piPageSize){
#if defined(_WIN32)
  SYSTEM_INFO sysInfo;
  memset(&sysInfo, 0, sizeof(SYSTEM_INFO));
  GetSystemInfo(&sysInfo);
  *piPageSize = (size_t)sysInfo.dwPageSize;
#elif defined(USE_MMAN_H)
  *piPageSize = (size_t)sysconf(_SC_PAGE_SIZE);
#else
  *piPageSize = 4096; /* FIXME: What for POSIX? */
#endif
}
void *fossil_secure_alloc_page(size_t *pN){
  void *p;
  size_t pageSize = 0;

  fossil_get_page_size(&pageSize);
  assert( pageSize>0 );
  assert( pageSize%2==0 );
#if defined(_WIN32)
  p = VirtualAlloc(NULL, pageSize, MEM_COMMIT|MEM_RESERVE, PAGE_READWRITE);
  if( p==NULL ){
    fossil_fatal("VirtualAlloc failed: %lu\n", GetLastError());
  }
  if( !VirtualLock(p, pageSize) ){
    fossil_fatal("VirtualLock failed: %lu\n", GetLastError());
  }
#elif defined(USE_MMAN_H)
  p = mmap(0, pageSize, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
  if( p==MAP_FAILED ){
    fossil_fatal("mmap failed: %d\n", errno);
  }
  if( mlock(p, pageSize) ){
    fossil_fatal("mlock failed: %d\n", errno);
  }
#else
  p = fossil_malloc(pageSize);
#endif
  fossil_secure_zero(p, pageSize);
  if( pN ) *pN = pageSize;
  return p;
}
void fossil_secure_free_page(void *p, size_t n){
  if( !p ) return;
  assert( n>0 );
  fossil_secure_zero(p, n);
#if defined(_WIN32)
  if( !VirtualUnlock(p, n) ){
    fossil_panic("VirtualUnlock failed: %lu\n", GetLastError());
  }
  if( !VirtualFree(p, 0, MEM_RELEASE) ){
    fossil_panic("VirtualFree failed: %lu\n", GetLastError());
  }
#elif defined(USE_MMAN_H)
  if( munlock(p, n) ){
    fossil_panic("munlock failed: %d\n", errno);
  }
  if( munmap(p, n) ){
    fossil_panic("munmap failed: %d\n", errno);
  }
#else
  fossil_free(p);
#endif
}

/*
** Duplicate a string.
*/
char *fossil_strndup(const char *zOrig, ssize_t len){
  char *z = 0;
  if( zOrig ){
    if( len<0 ) len = strlen(zOrig);
    z = fossil_malloc( len+1 );
    memcpy(z, zOrig, len);
    z[len] = 0;
  }
  return z;
}
char *fossil_strdup(const char *zOrig){
  return fossil_strndup(zOrig, -1);
}
char *fossil_strdup_nn(const char *zOrig){
  if( zOrig==0 ) return fossil_strndup("", 0);
  return fossil_strndup(zOrig, -1);
}

/*
** strcpy() workalike to squelch an unwarranted warning from OpenBSD.
*/
void fossil_strcpy(char *dest, const char *src){
  while( (*(dest++) = *(src++))!=0 ){}
}

/*
** Translate every upper-case character in the input string into
** its equivalent lower-case.
*/
char *fossil_strtolwr(char *zIn){
  char *zStart = zIn;
  if( zIn ){
    while( *zIn ){
      *zIn = fossil_tolower(*zIn);
      zIn++;
    }
  }
  return zStart;
}

/*
** This local variable determines the behavior of
** fossil_assert_safe_command_string():
**
**    0 (default)       fossil_panic() on an unsafe command string
**
**    1                 Print an error but continue process.  Used for
**                      testing of fossil_assert_safe_command_string().
**
**    2                 No-op.  Used to allow any arbitrary command string
**                      through fossil_system(), such as when invoking
**                      COMMAND in "fossil bisect run COMMAND".
*/
static int safeCmdStrTest = 0;

/*
** Check the input string to ensure that it is safe to pass into system().
** A string is unsafe for system() on unix if it contains any of the following:
**
**   *  Any occurrance of '$' or '`' except single-quoted or after \
**   *  Any of the following characters, unquoted:  ;|& or \n except
**      these characters are allowed as the very last character in the
**      string.
**   *  Unbalanced single or double quotes
**
** This routine is intended as a second line of defense against attack.
** It should never fail.  Dangerous shell strings should be detected and
** fixed before calling fossil_system().  This routine serves only as a
** safety net in case of bugs elsewhere in the system.
**
** If an unsafe string is seen, either abort (default) or print
** a warning message (if safeCmdStrTest is true).
*/
static void fossil_assert_safe_command_string(const char *z){
  int unsafe = 0;
#ifndef _WIN32
  /* Unix */
  int inQuote = 0;
  int i, c;
  for(i=0; !unsafe && (c = z[i])!=0; i++){
    switch( c ){
      case '$':
      case '`': {
        if( inQuote!='\'' ) unsafe = i+1;
        break;
      }
      case ';':
      case '|':
      case '&':
      case '\n': {
        if( inQuote!='\'' && z[i+1]!=0 ) unsafe = i+1;
        break;
      }
      case '"':
      case '\'': {
        if( inQuote==0 ){
          inQuote = c;
        }else if( inQuote==c ){
          inQuote = 0;
        }
        break;
      }
      case '\\': {
        if( z[i+1]==0 ){
          unsafe = i+1;
        }else if( inQuote!='\'' ){
          i++;
        }
        break;
      }
    }
  }
  if( inQuote ) unsafe = i;
#else
  /* Windows */
  int i, c;
  int inQuote = 0;
  for(i=0; !unsafe && (c = z[i])!=0; i++){
    switch( c ){
      case '>':
      case '<':
      case '|':
      case '&':
      case '\n': {
        if( inQuote==0 && z[i+1]!=0 ) unsafe = i+1;
        break;
      }
      case '"': {
        if( inQuote==c ){
          inQuote = 0;
        }else{
          inQuote = c;
        }
        break;
      }
      case '^': {
        if( !inQuote && z[i+1]!=0 ){
          i++;
        }
        break;
      }
    }
  }
  if( inQuote ) unsafe = i;
#endif
  if( unsafe && safeCmdStrTest<2 ){
    char *zMsg = mprintf("Unsafe command string: %s\n%*shere ----^",
                   z, unsafe+13, "");
    if( safeCmdStrTest ){
      fossil_print("%z\n", zMsg);
      fossil_free(zMsg);
    }else{
      fossil_panic("%s", zMsg);
    }
  }
}

/*
** This function implements a cross-platform "system()" interface.
*/
int fossil_system(const char *zOrigCmd){
  int rc;
#if defined(_WIN32)
  /* On windows, we have to put double-quotes around the entire command.
  ** Who knows why - this is just the way windows works.
  */
  char *zNewCmd = mprintf("\"%s\"", zOrigCmd);
  wchar_t *zUnicode = fossil_utf8_to_unicode(zNewCmd);
  if( g.fSystemTrace ) {
    fossil_trace("SYSTEM: %s\n", zNewCmd);
  }
  fossil_assert_safe_command_string(zOrigCmd);
  rc = _wsystem(zUnicode);
  fossil_unicode_free(zUnicode);
  free(zNewCmd);
#else
  /* On unix, evaluate the command directly.
  */
  if( g.fSystemTrace ) fprintf(stderr, "SYSTEM: %s\n", zOrigCmd);
  fossil_assert_safe_command_string(zOrigCmd);

  /* Unix systems should never shell-out while processing an HTTP request,
  ** either via CGI, SCGI, or direct HTTP.  The following assert verifies
  ** this.  And the following assert proves that Fossil is not vulnerable
  ** to the ShellShock or BashDoor bug.
  */
  assert( g.cgiOutput==0 );

  /* The regular system() call works to get a shell on unix */
  fossil_limit_memory(0);
  rc = system(zOrigCmd);
  fossil_limit_memory(1);
#endif
  return rc;
}

/*
** Like "fossil_system()" but does not check the command-string for
** potential security problems.
*/
int fossil_unsafe_system(const char *zOrigCmd){
  int rc;
  safeCmdStrTest = 2;
  rc = fossil_system(zOrigCmd);
  safeCmdStrTest = 0;
  return rc;
}

/*
** COMMAND: test-fossil-system
**
** Read lines of input and send them to fossil_system() for evaluation.
** Use this command to verify that fossil_system() will not run "unsafe"
** commands.
*/
void test_fossil_system_cmd(void){
  char zLine[10000];
  safeCmdStrTest = 1;
  while(1){
    size_t n;
    int rc;
    printf("system-test> ");
    fflush(stdout);
    if( !fgets(zLine, sizeof(zLine), stdin) ) break;
    n = strlen(zLine);
    while( n>0 && fossil_isspace(zLine[n-1]) ) n--;
    zLine[n] = 0;
    printf("cmd: [%s]\n", zLine);
    fflush(stdout);
    rc = fossil_system(zLine);
    printf("result: %d\n", rc);
  }
}

/*
** Like strcmp() except that it accepts NULL pointers.  NULL sorts before
** all non-NULL string pointers.  Also, this strcmp() is a binary comparison
** that does not consider locale.
*/
int fossil_strcmp(const char *zA, const char *zB){
  if( zA==0 ){
    if( zB==0 ) return 0;
    return -1;
  }else if( zB==0 ){
    return +1;
  }else{
    return strcmp(zA,zB);
  }
}
int fossil_strncmp(const char *zA, const char *zB, int nByte){
  if( zA==0 ){
    if( zB==0 ) return 0;
    return -1;
  }else if( zB==0 ){
    return +1;
  }else if( nByte>0 ){
    int a, b;
    do{
      a = *zA++;
      b = *zB++;
    }while( a==b && a!=0 && (--nByte)>0 );
    return ((unsigned char)a) - (unsigned char)b;
  }else{
    return 0;
  }
}

/*
** Case insensitive string comparison.
*/
int fossil_strnicmp(const char *zA, const char *zB, int nByte){
  if( zA==0 ){
    if( zB==0 ) return 0;
    return -1;
  }else if( zB==0 ){
    return +1;
  }
  if( nByte<0 ) nByte = strlen(zB);
  return sqlite3_strnicmp(zA, zB, nByte);
}
int fossil_stricmp(const char *zA, const char *zB){
  int nByte;
  int rc;
  if( zA==0 ){
    if( zB==0 ) return 0;
    return -1;
  }else if( zB==0 ){
    return +1;
  }
  nByte = strlen(zB);
  rc = sqlite3_strnicmp(zA, zB, nByte);
  if( rc==0 && zA[nByte] ) rc = 1;
  return rc;
}

/*
** Get user and kernel times in microseconds.
*/
void fossil_cpu_times(sqlite3_uint64 *piUser, sqlite3_uint64 *piKernel){
#ifdef _WIN32
  FILETIME not_used;
  FILETIME kernel_time;
  FILETIME user_time;
  GetProcessTimes(GetCurrentProcess(), &not_used, &not_used,
                  &kernel_time, &user_time);
  if( piUser ){
     *piUser = ((((sqlite3_uint64)user_time.dwHighDateTime)<<32) +
                         (sqlite3_uint64)user_time.dwLowDateTime + 5)/10;
  }
  if( piKernel ){
     *piKernel = ((((sqlite3_uint64)kernel_time.dwHighDateTime)<<32) +
                         (sqlite3_uint64)kernel_time.dwLowDateTime + 5)/10;
  }
#else
  struct rusage s;
  getrusage(RUSAGE_SELF, &s);
  if( piUser ){
    *piUser = ((sqlite3_uint64)s.ru_utime.tv_sec)*1000000 + s.ru_utime.tv_usec;
  }
  if( piKernel ){
    *piKernel =
              ((sqlite3_uint64)s.ru_stime.tv_sec)*1000000 + s.ru_stime.tv_usec;
  }
#endif
}

/*
** Return the resident set size for this process
*/
sqlite3_uint64 fossil_rss(void){
#ifdef _WIN32
  return 0;
#else
  struct rusage s;
  getrusage(RUSAGE_SELF, &s);
  return s.ru_maxrss*1024;
#endif
}


/*
** Internal helper type for fossil_timer_xxx().
 */
enum FossilTimerEnum {
  FOSSIL_TIMER_COUNT = 10 /* Number of timers we can track. */
};
static struct FossilTimer {
  sqlite3_uint64 u; /* "User" CPU times */
  sqlite3_uint64 s; /* "System" CPU times */
  int id; /* positive if allocated, else 0. */
} fossilTimerList[FOSSIL_TIMER_COUNT] = {{0,0,0}};

/*
** Stores the current CPU times into the shared timer list
** and returns that timer's internal ID. Pass that ID to
** fossil_timer_fetch() to get the elapsed time for that
** timer.
**
** The system has a fixed number of timers, and they can be
** "deallocated" by passing this function's return value to
** fossil_timer_stop() Adjust FOSSIL_TIMER_COUNT to set the number of
** available timers.
**
** Returns 0 on error (no more timers available), with 1+ being valid
** timer IDs.
*/
int fossil_timer_start(){
  int i;
  for( i = 0; i < FOSSIL_TIMER_COUNT; ++i ){
    struct FossilTimer * ft = &fossilTimerList[i];
    if(ft->id) continue;
    ft->id = i+1;
    fossil_cpu_times( &ft->u, &ft->s );
    break;
  }
  return (i<FOSSIL_TIMER_COUNT) ? i+1 : 0;
}

/*
** Returns the difference in CPU times in microseconds since
** fossil_timer_start() was called and returned the given timer ID (or
** since it was last reset). Returns 0 if timerId is out of range.
*/
sqlite3_uint64 fossil_timer_fetch(int timerId){
  if( timerId>0 && timerId<=FOSSIL_TIMER_COUNT ){
    struct FossilTimer * start = &fossilTimerList[timerId-1];
    if( !start->id ){
      fossil_panic("Invalid call to fetch a non-allocated "
                   "timer (#%d)", timerId);
      /*NOTREACHED*/
    }else{
      sqlite3_uint64 eu = 0, es = 0;
      fossil_cpu_times( &eu, &es );
      return (eu - start->u) + (es - start->s);
    }
  }
  return 0;
}

/*
** Resets the timer associated with the given ID, as obtained via
** fossil_timer_start(), to the current CPU time values.
*/
sqlite3_uint64 fossil_timer_reset(int timerId){
  if( timerId>0 && timerId<=FOSSIL_TIMER_COUNT ){
    struct FossilTimer * start = &fossilTimerList[timerId-1];
    if( !start->id ){
      fossil_panic("Invalid call to reset a non-allocated "
                   "timer (#%d)", timerId);
      /*NOTREACHED*/
    }else{
      sqlite3_uint64 const rc = fossil_timer_fetch(timerId);
      fossil_cpu_times( &start->u, &start->s );
      return rc;
    }
  }
  return 0;
}

/**
   "Deallocates" the fossil timer identified by the given timer ID.
   returns the difference (in uSec) between the last time that timer
   was started or reset. Returns 0 if timerId is out of range (but
   note that, due to system-level precision restrictions, this
   function might return 0 on success, too!). It is not legal to
   re-use the passed-in timerId after calling this until/unless it is
   re-initialized using fossil_timer_start() (NOT
   fossil_timer_reset()).
*/
sqlite3_uint64 fossil_timer_stop(int timerId){
  if(timerId<1 || timerId>FOSSIL_TIMER_COUNT){
    return 0;
  }else{
    sqlite3_uint64 const rc = fossil_timer_fetch(timerId);
    struct FossilTimer * t = &fossilTimerList[timerId-1];
    t->id = 0;
    t->u = t->s = 0U;
    return rc;
  }
}

/*
** Returns true (non-0) if the given timer ID (as returned from
** fossil_timer_start() is currently active.
*/
int fossil_timer_is_active( int timerId ){
  if(timerId<1 || timerId>FOSSIL_TIMER_COUNT){
    return 0;
  }else{
    const int rc = fossilTimerList[timerId-1].id;
    assert(!rc || (rc == timerId));
    return fossilTimerList[timerId-1].id;
  }
}

/*
** Return TRUE if fd is a valid open file descriptor.  This only
** works on unix.  The function always returns true on Windows.
*/
int is_valid_fd(int fd){
#ifdef _WIN32
  return 1;
#else
  return fcntl(fd, F_GETFL)!=(-1) || errno!=EBADF;
#endif
}

/*
** Returns TRUE if zSym is exactly HNAME_LEN_SHA1 or HNAME_LEN_K256
** bytes long and contains only lower-case ASCII hexadecimal values.
*/
int fossil_is_artifact_hash(const char *zSym){
  int sz = zSym ? (int)strlen(zSym) : 0;
  return (HNAME_LEN_SHA1==sz || HNAME_LEN_K256==sz) && validate16(zSym, sz);
}

/*
** Return true if the input string is NULL or all whitespace.
** Return false if the input string contains text.
*/
int fossil_all_whitespace(const char *z){
  if( z==0 ) return 1;
  while( fossil_isspace(z[0]) ){ z++; }
  return z[0]==0;
}

/*
** Return the name of the users preferred text editor.  Return NULL if
** not found.
**
** Search algorithm:
** (1) The local "editor" setting
** (2) The global "editor" setting
** (3) The VISUAL environment variable
** (4) The EDITOR environment variable
** (5) (Windows only:) "notepad.exe"
*/
const char *fossil_text_editor(void){
  const char *zEditor = db_get("editor", 0);
  if( zEditor==0 ){
    zEditor = fossil_getenv("VISUAL");
  }
  if( zEditor==0 ){
    zEditor = fossil_getenv("EDITOR");
  }
#if defined(_WIN32) || defined(__CYGWIN__)
  if( zEditor==0 ){
    zEditor = mprintf("%s\\notepad.exe", fossil_getenv("SYSTEMROOT"));
#if defined(__CYGWIN__)
    zEditor = fossil_utf8_to_path(zEditor, 0);
#endif
  }
#endif
  return zEditor;
}

/*
** Construct a temporary filename.
**
** The returned string is obtained from sqlite3_malloc() and must be
** freed by the caller.
**
** See also:  file_tempname() and file_time_timename();
*/
char *fossil_temp_filename(void){
  char *zTFile = 0;
  const char *zDir;
  char cDirSep;
  char zSep[2];
  size_t nDir;
  u64 r[2];
#ifdef _WIN32
  char *zTempDirA = NULL;
  WCHAR zTempDirW[MAX_PATH+1];
  const DWORD dwTempSizeW = sizeof(zTempDirW)/sizeof(zTempDirW[0]);
  DWORD dwTempLenW;
#else
  int i;
  static const char *azTmp[] = {"/var/tmp","/usr/tmp","/tmp"};
#endif
  if( g.db ){
    sqlite3_file_control(g.db, 0, SQLITE_FCNTL_TEMPFILENAME, (void*)&zTFile);
    if( zTFile ) return zTFile;
  }
  sqlite3_randomness(sizeof(r), &r);
#if _WIN32
  cDirSep = '\\';
  dwTempLenW = GetTempPathW(dwTempSizeW, zTempDirW);
  if( dwTempLenW>0 && dwTempLenW<dwTempSizeW
      && ( zTempDirA = fossil_path_to_utf8(zTempDirW) )){
    zDir = zTempDirA;
  }else{
    zDir = fossil_getenv("LOCALAPPDATA");
    if( zDir==0 ) zDir = ".";
  }
#else
  for(i=0; i<(int)(sizeof(azTmp)/sizeof(azTmp[0])); i++){
    struct stat buf;
    zDir = azTmp[i];
    if( stat(zDir,&buf)==0 && S_ISDIR(buf.st_mode) && access(zDir,03)==0 ){
      break;
    }
  }
  if( i>=(int)(sizeof(azTmp)/sizeof(azTmp[0])) ) zDir = ".";
  cDirSep = '/';
#endif
  nDir = strlen(zDir);
  zSep[1] = 0;
  zSep[0] = (nDir && zDir[nDir-1]==cDirSep) ? 0 : cDirSep;
  zTFile = sqlite3_mprintf("%s%sfossil%016llx%016llx", zDir,zSep,r[0],r[1]);
#ifdef _WIN32
  if( zTempDirA ) fossil_path_free(zTempDirA);
#endif
  return zTFile;
}

/*
** Turn memory limits for stack and heap on and off.  The argument
** is true to turn memory limits on and false to turn them off.
**
** Memory limits should be enabled at startup, but then turned off
** before starting subprocesses.
*/
void fossil_limit_memory(int onOff){
#if defined(__unix__)
  static sqlite3_int64 origHeap = 10000000000LL;  /* 10GB */
  static sqlite3_int64 origStack =    8000000  ;  /*  8MB */
  struct rlimit x;

#if defined(RLIMIT_DATA)
  getrlimit(RLIMIT_DATA, &x);
  if( onOff ){
    origHeap = x.rlim_cur;
    if( sizeof(void*)<8 || sizeof(x.rlim_cur)<8 ){
      x.rlim_cur =  1000000000  ;  /* 1GB on 32-bit systems */
    }else{
      x.rlim_cur = 10000000000LL;  /* 10GB on 64-bit systems */
    }
  }else{
    x.rlim_cur = origHeap;
  }
  setrlimit(RLIMIT_DATA, &x);
#endif /* defined(RLIMIT_DATA) */
#if defined(RLIMIT_STACK)
  getrlimit(RLIMIT_STACK, &x);
  if( onOff ){
    origStack = x.rlim_cur;
    x.rlim_cur =  8000000;  /* 8MB */
  }else{
    x.rlim_cur = origStack;
  }
  setrlimit(RLIMIT_STACK, &x);
#endif /* defined(RLIMIT_STACK) */
#endif /* defined(__unix__) */
}

#if defined(HAVE_PLEDGE)
/*
** Interface to pledge() on OpenBSD 5.9 and later.
**
** On platforms that have pledge(), use this routine.
** On all other platforms, this routine does not exist, but instead
** a macro defined in config.h is used to provide a no-op.
*/
void fossil_pledge(const char *promises){
  if( pledge(promises, 0) ){
    fossil_panic("pledge(\"%s\",NULL) fails with errno=%d",
      promises, (int)errno);
  }
}
#endif /* defined(HAVE_PLEDGE) */

/*
** Construct a random password and return it as a string.  N is the
** recommended number of characters for the password.
**
** Space to hold the returned string is obtained from fossil_malloc()
** and should be freed by the caller.
*/
char *fossil_random_password(int N){
  char zSrc[60];
  int nSrc;
  int i;
  char z[60];

  /* Source characters for the password.  Omit characters like "0", "O",
  ** "1" and "I"  that might be easily confused */
  static const char zAlphabet[] =
           /*  0         1         2         3         4         5       */
           /*   123456789 123456789 123456789 123456789 123456789 123456 */
              "23456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ";

  if( N<8 ) N = 8;
  nSrc = sizeof(zAlphabet) - 1;
  if( N>nSrc ) N = nSrc;
  memcpy(zSrc, zAlphabet, nSrc);

  for(i=0; i<N; i++){
    unsigned r;
    sqlite3_randomness(sizeof(r), &r);
    r %= nSrc;
    z[i] = zSrc[r];
    zSrc[r] = zSrc[--nSrc];
  }
  z[i] = 0;
  return fossil_strdup(z);
}

/*
** COMMAND: test-random-password
**
** Usage: %fossil test-random-password [N] [--entropy]
**
** Generate a random password string of approximately N characters in length.
** If N is omitted, use 12.  Values of N less than 8 are changed to 8
** and greater than 57 and changed to 57.
**
** If the --entropy flag is included, the number of bits of entropy in
** the password is show as well.
*/
void test_random_password(void){
  int N = 12;
  int showEntropy = 0;
  int i;
  char *zPassword;
  for(i=2; i<g.argc; i++){
    const char *z = g.argv[i];
    if( z[0]=='-' && z[1]=='-' ) z++;
    if( strcmp(z,"-entropy")==0 ){
      showEntropy = 1;
    }else if( fossil_isdigit(z[0]) ){
      N = atoi(z);
      if( N<8 ) N = 8;
      if( N>57 ) N = 57;
    }else{
      usage("[N] [--entropy]");
    }
  }
  zPassword = fossil_random_password(N);
  if( showEntropy ){
    double et = 57.0;
    for(i=1; i<N; i++) et *= 57-i;
    fossil_print("%s (%d bits of entropy)\n", zPassword,
                 (int)(log(et)/log(2.0)));
  }else{
    fossil_print("%s\n", zPassword);
  }
  fossil_free(zPassword);
}

/*
** Return the number of decimal digits in a nonnegative integer.  This is useful
** when formatting text.
*/
int fossil_num_digits(int n){
  return n<      10 ? 1 : n<      100 ? 2 : n<      1000 ? 3
       : n<   10000 ? 4 : n<   100000 ? 5 : n<   1000000 ? 6
       : n<10000000 ? 7 : n<100000000 ? 8 : n<1000000000 ? 9 : 10;
}

#if !defined(_WIN32)
#if !defined(__DARWIN__) && !defined(__APPLE__) && !defined(__HAIKU__)
/*
** Search for an executable on the PATH environment variable.
** Return true (1) if found and false (0) if not found.
*/
static int binaryOnPath(const char *zBinary){
  const char *zPath = fossil_getenv("PATH");
  char *zFull;
  int i;
  int bExists;
  while( zPath && zPath[0] ){
    while( zPath[0]==':' ) zPath++;
    for(i=0; zPath[i] && zPath[i]!=':'; i++){}
    zFull = mprintf("%.*s/%s", i, zPath, zBinary);
    bExists = file_access(zFull, X_OK);
    fossil_free(zFull);
    if( bExists==0 ) return 1;
    zPath += i;
  }
  return 0;
}
#endif
#endif


/*
** Return the name of a command that will launch a web-browser.
*/
const char *fossil_web_browser(void){
  const char *zBrowser = 0;
#if defined(_WIN32)
  zBrowser = db_get("web-browser", "start \"\"");
#elif defined(__DARWIN__) || defined(__APPLE__) || defined(__HAIKU__)
  zBrowser = db_get("web-browser", "open");
#else
  zBrowser = db_get("web-browser", 0);
  if( zBrowser==0 ){
    static const char *const azBrowserProg[] =
        { "xdg-open", "gnome-open", "firefox", "google-chrome" };
    int i;
    zBrowser = "echo";
    for(i=0; i<count(azBrowserProg); i++){
      if( binaryOnPath(azBrowserProg[i]) ){
        zBrowser = azBrowserProg[i];
        break;
      }
    }
  }
#endif
  return zBrowser;
}

/*
** On non-Windows systems, calls nice(2) with the given level. Errors
** are ignored. On Windows this is a no-op.
*/
void fossil_nice(int level){
#ifndef _WIN32
  /* dummy if() condition to avoid nuisance warning about unused result on
     certain compiler */
  if( nice(level) ){ /*ignored*/ }
#else
  (void)level;
#endif
}

/*
** Calls fossil_nice() with a default level.
*/
void fossil_nice_default(void){
  fossil_nice(19);
}
Changes to src/verify.c.
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**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to help verify the integrity of the
** This file contains code used to help verify the integrity of
** the repository.
**
** This file primarily implements the verify_before_commit() interface.
** Any function can call verify_before_commit() with a record id (RID)
** as an argument.  Then before the next change to the database commits,
** this routine will reach in and check that the record can be extracted
** correctly from the BLOB table.
*/
#include "config.h"
#include "verify.h"
#include <assert.h>

/*
** Load the record identify by rid.  Make sure we can reproduce it
** without error.
**
** Panic if anything goes wrong.  If this procedure returns it means
** that everything is OK.
*/
static void verify_rid(int rid){
  Blob uuid, hash, content;
  if( db_int(0, "SELECT size FROM blob WHERE rid=%d", rid)<0 ){
  Blob uuid, content;
  if( content_size(rid, 0)<0 ){
    return;  /* No way to verify phantoms */
  }
  blob_zero(&uuid);
  db_blob(&uuid, "SELECT uuid FROM blob WHERE rid=%d", rid);
  if( blob_size(&uuid)!=UUID_SIZE ){
    fossil_panic("not a valid rid: %d", rid);
  if( !hname_validate(blob_buffer(&uuid), blob_size(&uuid)) ){
    fossil_fatal("not a valid rid: %d", rid);
  }
  if( content_get(rid, &content) ){
    sha1sum_blob(&content, &hash);
    if( !hname_verify_hash(&content, blob_buffer(&uuid), blob_size(&uuid)) ){
    blob_reset(&content);
    if( blob_compare(&uuid, &hash) ){
      fossil_fatal("hash of rid %d (%b) does not match its uuid (%b)",
                    rid, &hash, &uuid);
      fossil_panic("hash of rid %d does not match its uuid (%b)",
                    rid, &uuid);
    }
    blob_reset(&hash);
    blob_reset(&content);
  }
  blob_reset(&uuid);
}

/*
** The following bag holds the rid for every record that needs
** to be verified.
*/
static Bag toVerify;
static int inFinalVerify = 0;

/*
** This routine is called just prior to each commit operation.  
** This routine is called just prior to each commit operation.
**
** Invoke verify_rid() on every record that has been added or modified
** in the repository, in order to make sure that the repository is sane.
*/
static int verify_at_commit(void){
  int rid;
  content_clear_cache();
  content_clear_cache(0);
  inFinalVerify = 1;
  rid = bag_first(&toVerify);
  while( rid>0 ){
    verify_rid(rid);
    rid = bag_next(&toVerify, rid);
  }
  bag_clear(&toVerify);
  inFinalVerify = 0;
  return 0;
}

/*
** Arrange to verify a particular record prior to committing.
** 
**
** If the record rid is less than 1, then just initialize the
** verification system but do not record anything as needing
** verification.
*/
void verify_before_commit(int rid){
  static int isInit = 0;
  if( !isInit ){
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**
** Procedures for managing the VFILE table.
*/
#include "config.h"
#include "vfile.h"
#include <assert.h>
#include <sys/types.h>
#include <dirent.h>

/*
** The input is guaranteed to be a 40- or 64-character well-formed
** artifact hash.  Find its rid.
*/
int fast_uuid_to_rid(const char *zUuid){
  static Stmt q;
  int rid;
  db_static_prepare(&q, "SELECT rid FROM blob WHERE uuid=:uuid");
  db_bind_text(&q, ":uuid", zUuid);
  if( db_step(&q)==SQLITE_ROW ){
    rid = db_column_int(&q, 0);
  }else{
    rid = 0;
  }
  db_reset(&q);
  return rid;
}

/*
** Given a UUID, return the corresponding record ID.  If the UUID
** does not exist, then return 0.
**
** For this routine, the UUID must be exact.  For a match against
** user input with mixed case, use resolve_uuid().
**
** If the UUID is not found and phantomize is 1, then attempt to 
** create a phantom record.
** If the UUID is not found and phantomize is 1 or 2, then attempt to
** create a phantom record.  A private phantom is created for 2 and
** a public phantom is created for 1.
*/
int uuid_to_rid(const char *zUuid, int phantomize){
  int rid, sz;
  static Stmt q;
  char z[UUID_SIZE+1];
  
  char z[HNAME_MAX+1];

  sz = strlen(zUuid);
  if( sz!=UUID_SIZE || !validate16(zUuid, sz) ){
    return 0;
  if( !hname_validate(zUuid, sz) ){
    return 0;  /* Not a valid hash */
  }
  strcpy(z, zUuid);
  memcpy(z, zUuid, sz+1);
  canonical16(z, sz);
  db_static_prepare(&q, "SELECT rid FROM blob WHERE uuid=:uuid");
  db_bind_text(&q, ":uuid", z);
  if( db_step(&q)==SQLITE_ROW ){
    rid = db_column_int(&q, 0);
  }else{
    rid = 0;
  rid = fast_uuid_to_rid(z);
  }
  db_reset(&q);
  if( rid==0 && phantomize ){
    rid = content_new(zUuid);
    rid = content_new(zUuid, phantomize-1);
  }
  return rid;
}


/*
** Verify that an object is not a phantom.  If the object is
** a phantom, output an error message and quick.
** Load a vfile from a record ID.  Return the number of files with
** missing content.
*/
int load_vfile_from_rid(int vid){
void vfile_verify_not_phantom(int rid, const char *zFilename){
  if( db_int(-1, "SELECT size FROM blob WHERE rid=%d", rid)<0 ){
    if( zFilename ){
  int rid, size, nMissing;
  Stmt ins, ridq;
  Manifest *p;
      fossil_fatal("content missing for %s", zFilename);
    }else{
      char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      if( zUuid ){
  ManifestFile *pFile;
        fossil_fatal("content missing for [%.10s]", zUuid);
      }else{
        fossil_panic("bad object id: %d", rid);
      }
    }
  }

  if( db_exists("SELECT 1 FROM vfile WHERE vid=%d", vid) ){
    return 0;
  }

}

  db_begin_transaction();
/*
** Build a catalog of all files in a baseline.
** We scan the baseline file for lines of the form:
**
**     F NAME UUID
**
** Each such line makes an entry in the VFILE table.
*/
void vfile_build(int vid, Blob *p){
  int rid;
  p = manifest_get(vid, CFTYPE_MANIFEST, 0);
  if( p==0 ) {
  char *zName, *zUuid;
  Stmt ins;
  Blob line, token, name, uuid;
  int seenHeader = 0;
  db_begin_transaction();
  vfile_verify_not_phantom(vid, 0);
    db_end_transaction(1);
    return 0;
  db_multi_exec("DELETE FROM vfile WHERE vid=%d", vid);
  }
  db_prepare(&ins,
    "INSERT INTO vfile(vid,rid,mrid,pathname) "
    " VALUES(:vid,:id,:id,:name)");
    "INSERT INTO vfile(vid,isexe,islink,rid,mrid,pathname,mhash) "
    " VALUES(:vid,:isexe,:islink,:id,:id,:name,NULL)");
  db_prepare(&ridq, "SELECT rid,size FROM blob WHERE uuid=:uuid");
  db_bind_int(&ins, ":vid", vid);
  while( blob_line(p, &line) ){
    char *z = blob_buffer(&line);
    if( z[0]=='-' ){
      if( seenHeader ) break;
      while( blob_line(p, &line)>2 ){}
      if( blob_line(p, &line)==0 ) break;
  manifest_file_rewind(p);
  nMissing = 0;
  while( (pFile = manifest_file_next(p,0))!=0 ){
    if( pFile->zUuid==0 || uuid_is_shunned(pFile->zUuid) ) continue;
    db_bind_text(&ridq, ":uuid", pFile->zUuid);
    if( db_step(&ridq)==SQLITE_ROW ){
      rid = db_column_int(&ridq, 0);
      size = db_column_int(&ridq, 1);
    }else{
      rid = 0;
      size = 0;
    }
    seenHeader = 1;
    if( z[0]!='F' || z[1]!=' ' ) continue;
    db_reset(&ridq);
    if( rid==0 || size<0 ){
    blob_token(&line, &token);  /* Skip the "F" token */
    if( blob_token(&line, &name)==0 ) break;
    if( blob_token(&line, &uuid)==0 ) break;
    zName = blob_str(&name);
    defossilize(zName);
      fossil_warning("content missing for %s", pFile->zName);
      nMissing++;
    zUuid = blob_str(&uuid);
    rid = uuid_to_rid(zUuid, 0);
    vfile_verify_not_phantom(rid, zName);
      continue;
    if( rid>0 && file_is_simple_pathname(zName) ){
      db_bind_int(&ins, ":id", rid);
      db_bind_text(&ins, ":name", zName);
      db_step(&ins);
      db_reset(&ins);
    }
    blob_reset(&name);
    }
    db_bind_int(&ins, ":isexe", ( manifest_file_mperm(pFile)==PERM_EXE ));
    db_bind_int(&ins, ":id", rid);
    db_bind_text(&ins, ":name", pFile->zName);
    db_bind_int(&ins, ":islink", ( manifest_file_mperm(pFile)==PERM_LNK ));
    db_step(&ins);
    db_reset(&ins);
  }
  db_finalize(&ridq);
    blob_reset(&uuid);
  }
  db_finalize(&ins);
  manifest_destroy(p);
  db_end_transaction(0);
  return nMissing;
}

#if INTERFACE
/*
** The cksigFlags parameter to vfile_check_signature() is an OR-ed
** Check the file signature of the disk image for every VFILE of vid.
**
** Set the VFILE.CHNGED field on every file that has changed.  Also 
** set VFILE.CHNGED on every folder that contains a file or folder 
** that has changed.
** combination of the following bits:
*/
#define CKSIG_ENOTFILE  0x001   /* non-file FS objects throw an error */
#define CKSIG_HASH      0x002   /* Verify file content using hashing */
#define CKSIG_SETMTIME  0x004   /* Set mtime to last check-out time */

#endif /* INTERFACE */

/*
** Look at every VFILE entry with the given vid and update VFILE.CHNGED field
** according to whether or not the file has changed.
** - 0 means no change.
** - 1 means edited.
** - 2 means changed due to a merge.
** - 3 means added by a merge.
** - 4 means changed due to an integrate merge.
** - 5 means added by an integrate merge.
** - 6 means became executable but has unmodified contents.
** - 7 means became a symlink whose target equals its old contents.
** - 8 means lost executable status but has unmodified contents.
** - 9 means lost symlink status and has contents equal to its old target.
**
** If VFILE.DELETED is null or if VFILE.RID is zero, then we can assume
** the file has changed without having the check the on-disk image.
** If VFILE.DELETED is true or if VFILE.RID is zero, then the file was either
** removed from configuration management via "fossil rm" or added via
** "fossil add", respectively, and in both cases we always know that
** the file has changed without having the check the size, mtime,
** or on-disk content.
**
** If the size of the file has changed, then we always know that the file
** changed without having to look at the mtime or on-disk content.
**
** The mtime of the file is only a factor if the mtime-changes setting
** is true (or undefined - it defaults to true) and the CKSIG_HASH
** flag is false.  If the mtime-changes setting is false or if
** CKSIG_HASH is true, then we do not trust the mtime and will examine
** the on-disk content to determine if a file really is the same.
**
** If the mtime is used, it is used only to determine if files are the same.
** If the mtime of a file has changed, we still examine the on-disk content
** to see whether or not the edit was a null-edit.
*/
void vfile_check_signature(int vid, int notFileIsFatal){
void vfile_check_signature(int vid, unsigned int cksigFlags){
  int nErr = 0;
  Stmt q;
  Blob fileCksum, origCksum;
  int checkMtime = db_get_boolean("mtime-changes", 1);
  int useMtime = (cksigFlags & CKSIG_HASH)==0
                    && db_get_boolean("mtime-changes", 1);

  db_begin_transaction();
  db_prepare(&q, "SELECT id, %Q || pathname,"
                 "       vfile.mrid, deleted, chnged, uuid, mtime"
                 "       vfile.mrid, deleted, chnged, uuid, size, mtime,"
                 "      CASE WHEN isexe THEN %d WHEN islink THEN %d ELSE %d END"
                 "  FROM vfile LEFT JOIN blob ON vfile.mrid=blob.rid"
                 " WHERE vid=%d ", g.zLocalRoot, vid);
                 " WHERE vid=%d ", g.zLocalRoot, PERM_EXE, PERM_LNK, PERM_REG,
                 vid);
  while( db_step(&q)==SQLITE_ROW ){
    int id, rid, isDeleted;
    const char *zName;
    int chnged = 0;
    int oldChnged;
#ifndef _WIN32
    int origPerm;
    int currentPerm;
#endif
    i64 oldMtime;
    i64 currentMtime;
    i64 origSize;
    i64 currentSize;

    id = db_column_int(&q, 0);
    zName = db_column_text(&q, 1);
    rid = db_column_int(&q, 2);
    isDeleted = db_column_int(&q, 3);
    oldChnged = db_column_int(&q, 4);
    oldMtime = db_column_int64(&q, 6);
    if( isDeleted ){
    oldChnged = chnged = db_column_int(&q, 4);
    oldMtime = db_column_int64(&q, 7);
    origSize = db_column_int64(&q, 6);
    currentSize = file_size(zName, RepoFILE);
    currentMtime = file_mtime(0, 0);
#ifndef _WIN32
    origPerm = db_column_int(&q, 8);
    currentPerm = file_perm(zName, RepoFILE);
#endif
    if( chnged==0 && (isDeleted || rid==0) ){
      /* "fossil rm" or "fossil add" always change the file */
      chnged = 1;
    }else if( !file_isfile(zName) && file_size(0)>=0 ){
      if( notFileIsFatal ){
    }else if( !file_isfile_or_link(0) && currentSize>=0 ){
      if( cksigFlags & CKSIG_ENOTFILE ){
        fossil_warning("not an ordinary file: %s", zName);
        nErr++;
      }
      chnged = 1;
    }else if( oldChnged>=2 ){
      chnged = oldChnged;
    }else if( rid==0 ){
      chnged = 1;
    }
    if( origSize!=currentSize ){
    if( chnged!=1 ){
      currentMtime = file_mtime(0);
    }
    if( chnged!=1 && (checkMtime==0 || currentMtime!=oldMtime) ){
      db_ephemeral_blob(&q, 5, &origCksum);
      if( sha1sum_file(zName, &fileCksum) ){
      if( chnged!=1 ){
        /* A file size change is definitive - the file has changed.  No
        ** need to check the mtime or hash */
        chnged = 1;
      }
    }else if( chnged==1 && rid!=0 && !isDeleted ){
      /* File is believed to have changed but it is the same size.
      ** Double check that it really has changed by looking at content. */
      const char *zUuid = db_column_text(&q, 5);
      int nUuid = db_column_bytes(&q, 5);
      assert( origSize==currentSize );
      if( hname_verify_file_hash(zName, zUuid, nUuid) ) chnged = 0;
    }else if( (chnged==0 || chnged==2 || chnged==4)
           && (useMtime==0 || currentMtime!=oldMtime) ){
      /* For files that were formerly believed to be unchanged or that were
      ** changed by merging, if their mtime changes, or unconditionally
      ** if --hash is used, check to see if they have been edited by
      ** looking at their artifact hashes */
      const char *zUuid = db_column_text(&q, 5);
      int nUuid = db_column_bytes(&q, 5);
      assert( origSize==currentSize );
      if( !hname_verify_file_hash(zName, zUuid, nUuid) ) chnged = 1;
        blob_zero(&fileCksum);
      }
    }
      if( blob_compare(&fileCksum, &origCksum) ){
        chnged = 1;
      }else if( currentMtime!=oldMtime ){
        db_multi_exec("UPDATE vfile SET mtime=%lld WHERE id=%d",
                      currentMtime, id);
      }
      blob_reset(&origCksum);
    if( (cksigFlags & CKSIG_SETMTIME) && (chnged==0 || chnged==2 || chnged==4)){
      i64 desiredMtime;
      if( mtime_of_manifest_file(vid,rid,&desiredMtime)==0 ){
        if( currentMtime!=desiredMtime ){
          file_set_mtime(zName, desiredMtime);
          currentMtime = file_mtime(zName, RepoFILE);
        }
      }
    }
#ifndef _WIN32
    if( origPerm!=PERM_LNK && currentPerm==PERM_LNK ){
       /* Changing to a symlink takes priority over all other change types. */
       chnged = 7;
    }else if( origPerm==PERM_LNK && currentPerm!=PERM_LNK ){
      /* Ditto, other direction */
      chnged = 9;
    }else if( chnged==0 || chnged==6 || chnged==7 || chnged==8 || chnged==9 ){
       /* Confirm metadata change types. */
      if( origPerm==currentPerm ){
      blob_reset(&fileCksum);
    }
    if( chnged!=oldChnged ){
      db_multi_exec("UPDATE vfile SET chnged=%d WHERE id=%d", chnged, id);
        chnged = 0;
      }else if( currentPerm==PERM_EXE ){
        chnged = 6;
      }else if( origPerm==PERM_EXE ){
        chnged = 8;
      }else if( origPerm==PERM_LNK ){
        chnged = 9;
      }
    }
#endif
    if( currentMtime!=oldMtime || chnged!=oldChnged ){
      db_multi_exec("UPDATE vfile SET mtime=%lld, chnged=%d WHERE id=%d",
                    currentMtime, chnged, id);
    }
  }
  db_finalize(&q);
  if( nErr ) fossil_fatal("abort due to prior errors");
  db_end_transaction(0);
}

/*
** Write all files from vid to the disk.  Or if vid==0 and id!=0
** write just the specific file where VFILE.ID=id.
*/
void vfile_to_disk(int vid, int id, int verbose){
void vfile_to_disk(
  int vid,               /* vid to write to disk */
  int id,                /* Write this one file, if not zero */
  int verbose,           /* Output progress information */
  int promptFlag         /* Prompt user to confirm overwrites */
){
  Stmt q;
  Blob content;
  int nRepos = strlen(g.zLocalRoot);

  if( vid>0 && id==0 ){
    db_prepare(&q, "SELECT id, %Q || pathname, mrid"
    db_prepare(&q, "SELECT id, %Q || pathname, mrid, isexe, islink"
                   "  FROM vfile"
                   " WHERE vid=%d AND mrid>0",
                   g.zLocalRoot, vid);
  }else{
    assert( vid==0 && id>0 );
    db_prepare(&q, "SELECT id, %Q || pathname, mrid"
    db_prepare(&q, "SELECT id, %Q || pathname, mrid, isexe, islink"
                   "  FROM vfile"
                   " WHERE id=%d AND mrid>0",
                   g.zLocalRoot, id);
  }
  while( db_step(&q)==SQLITE_ROW ){
    int id, rid;
    int id, rid, isExe, isLink;
    const char *zName;

    id = db_column_int(&q, 0);
    zName = db_column_text(&q, 1);
    rid = db_column_int(&q, 2);
    isExe = db_column_int(&q, 3);
    isLink = db_column_int(&q, 4);
    if( file_unsafe_in_tree_path(zName) ){
      continue;
    }
    content_get(rid, &content);
    if( file_is_the_same(&content, zName) ){
      blob_reset(&content);
      if( file_setexe(zName, isExe) ){
        db_multi_exec("UPDATE vfile SET mtime=%lld WHERE id=%d",
                      file_mtime(zName, RepoFILE), id);
      }
      continue;
    }
    if( promptFlag && file_size(zName, RepoFILE)>=0 ){
      Blob ans;
      char *zMsg;
      char cReply;
      zMsg = mprintf("overwrite %s (a=always/y/N)? ", zName);
      prompt_user(zMsg, &ans);
      free(zMsg);
      cReply = blob_str(&ans)[0];
      blob_reset(&ans);
      if( cReply=='a' || cReply=='A' ){
        promptFlag = 0;
      } else if( cReply!='y' && cReply!='Y' ){
        blob_reset(&content);
        continue;
      }
    }
    if( verbose ) printf("%s\n", &zName[nRepos]);
    blob_write_to_file(&content, zName);
    if( verbose ) fossil_print("%s\n", &zName[nRepos]);
    if( file_isdir(zName, RepoFILE)==1 ){
      /*TODO(dchest): remove directories? */
      fossil_fatal("%s is directory, cannot overwrite", zName);
    }
    if( file_size(zName, RepoFILE)>=0 && (isLink || file_islink(0)) ){
      file_delete(zName);
    }
    if( isLink ){
      symlink_create(blob_str(&content), zName);
    }else{
      blob_write_to_file(&content, zName);
    }
    file_setexe(zName, isExe);
    blob_reset(&content);
    db_multi_exec("UPDATE vfile SET mtime=%lld WHERE id=%d",
                  file_mtime(zName), id);
                  file_mtime(zName, RepoFILE), id);
  }
  db_finalize(&q);
}


/*
** Check to see if the directory named in zPath is the top of a check-out.
** Delete from the disk every file in VFILE vid.
** In other words, check to see if directory pPath contains a file named
** "_FOSSIL_" or ".fslckout".  Return true or false.
*/
void vfile_unlink(int vid){
  Stmt q;
  db_prepare(&q, "SELECT %Q || pathname FROM vfile"
                 " WHERE vid=%d AND mrid>0", g.zLocalRoot, vid);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName;
int vfile_top_of_checkout(const char *zPath){
  char *zFile;
  int fileFound = 0;

  zFile = mprintf("%s/_FOSSIL_", zPath);
  fileFound = file_size(zFile, ExtFILE)>=1024;
  fossil_free(zFile);
  if( !fileFound ){
    zFile = mprintf("%s/.fslckout", zPath);
    fileFound = file_size(zFile, ExtFILE)>=1024;
    fossil_free(zFile);
  }

  /* Check for ".fos" for legacy support.  But the use of ".fos" as the
  ** per-check-out database name is deprecated.  At some point, all support
  ** for ".fos" will end and this code should be removed.  This comment
  ** added on 2012-02-04.
  */
  if( !fileFound ){
    zFile = mprintf("%s/.fos", zPath);
    fileFound = file_size(zFile, ExtFILE)>=1024;
    fossil_free(zFile);
  }
  return fileFound;
}

/*
** Return TRUE if zFile is a temporary file.  Return FALSE if not.
*/
static int is_temporary_file(const char *zName){
  static const char *const azTemp[] = {
     "baseline",
     "merge",
     "original",
     "output",
  };
  int i, j, n;

  if( sqlite3_strglob("ci-comment-????????????.txt", zName)==0 ) return 1;
    zName = db_column_text(&q, 0);
    unlink(zName);
  }
  db_finalize(&q);
  for(; zName[0]!=0; zName++){
    if( zName[0]=='/'
        && sqlite3_strglob("/ci-comment-????????????.txt", zName)==0 ){
      return 1;
    }
    if( zName[0]!='-' ) continue;
    for(i=0; i<count(azTemp); i++){
      n = (int)strlen(azTemp[i]);
  db_multi_exec("UPDATE vfile SET mtime=NULL WHERE vid=%d AND mrid>0", vid);
}
      if( memcmp(azTemp[i], zName+1, n) ) continue;
      if( zName[n+1]==0 ) return 1;
      if( zName[n+1]=='-' ){
        for(j=n+2; zName[j] && fossil_isdigit(zName[j]); j++){}
        if( zName[j]==0 ) return 1;
      }
    }
  }
  return 0;
}

#if INTERFACE
/*
** Values for the scanFlags parameter to vfile_scan().
*/
#define SCAN_ALL    0x001    /* Includes files that begin with "." */
#define SCAN_TEMP   0x002    /* Only Fossil-generated files like *-baseline */
#define SCAN_NESTED 0x004    /* Scan for empty dirs in nested checkouts */
#define SCAN_MTIME  0x008    /* Populate mtime column */
#define SCAN_SIZE   0x010    /* Populate size column */
#define SCAN_ISEXE  0x020    /* Populate isexe column */
#endif /* INTERFACE */

/*
** Load into table SFILE the name of every ordinary file in
** the directory pPath.   Omit the first nPrefix characters of
** of pPath when inserting into the SFILE table.
** Subdirectories are scanned recursively.
**
** Omit files named in VFILE if eFType==RepoFILE.  Include all files
** if eFType==ExtFILE.
**
** Files whose names begin with "." are omitted unless the SCAN_ALL
** flag is set.
**
** Any files or directories that match the glob patterns pIgnore*
** are excluded from the scan.  Name matching occurs after the
** first nPrefix characters are elided from the filename.
*/
void vfile_scan(
  Blob *pPath,           /* Directory to be scanned */
  int nPrefix,           /* Number of bytes in directory name */
  unsigned scanFlags,    /* Zero or more SCAN_xxx flags */
  Glob *pIgnore1,        /* Do not add files that match this GLOB */
  Glob *pIgnore2,        /* Omit files matching this GLOB too */
  int eFType             /* ExtFILE or RepoFILE */
){
  DIR *d;
  int origSize;
  struct dirent *pEntry;
  int skipAll = 0;
  static Stmt ins;
  static int depth = 0;
  void *zNative;

  origSize = blob_size(pPath);
  if( pIgnore1 || pIgnore2 ){
    blob_appendf(pPath, "/");
    if( glob_match(pIgnore1, &blob_str(pPath)[nPrefix+1]) ) skipAll = 1;
    if( glob_match(pIgnore2, &blob_str(pPath)[nPrefix+1]) ) skipAll = 1;
    blob_resize(pPath, origSize);
  }
  if( skipAll ) return;

  if( depth==0 ){
    if( eFType==ExtFILE ){
      db_prepare(&ins,
        "INSERT OR IGNORE INTO sfile(pathname%s%s%s) VALUES(:file%s%s%s)",
        scanFlags & SCAN_MTIME ? ",mtime"  : "",
        scanFlags & SCAN_SIZE  ? ",size"   : "",
        scanFlags & SCAN_ISEXE ? ",isexe"  : "",
        scanFlags & SCAN_MTIME ? ",:mtime" : "",
        scanFlags & SCAN_SIZE  ? ",:size"  : "",
        scanFlags & SCAN_ISEXE ? ",:isexe" : ""
      );
    }else{
      db_prepare(&ins,
        "INSERT OR IGNORE INTO sfile(pathname%s%s%s) SELECT :file%s%s%s"
        "  WHERE NOT EXISTS(SELECT 1 FROM vfile WHERE"
        " pathname=:file %s)",
        scanFlags & SCAN_MTIME ? ",mtime"  : "",
        scanFlags & SCAN_SIZE  ? ",size"   : "",
        scanFlags & SCAN_ISEXE ? ",isexe"  : "",
        scanFlags & SCAN_MTIME ? ",:mtime" : "",
        scanFlags & SCAN_SIZE  ? ",:size"  : "",
        scanFlags & SCAN_ISEXE ? ",:isexe" : "",
        filename_collation()
      );
    }
  }
  depth++;

  zNative = fossil_utf8_to_path(blob_str(pPath), 1);
  d = opendir(zNative);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      char *zPath;
      char *zUtf8;
      if( pEntry->d_name[0]=='.' ){
        if( (scanFlags & SCAN_ALL)==0 ) continue;
        if( pEntry->d_name[1]==0 ) continue;
        if( pEntry->d_name[1]=='.' && pEntry->d_name[2]==0 ) continue;
      }
      zUtf8 = fossil_path_to_utf8(pEntry->d_name);
      blob_appendf(pPath, "/%s", zUtf8);
      zPath = blob_str(pPath);
      if( glob_match(pIgnore1, &zPath[nPrefix+1]) ||
          glob_match(pIgnore2, &zPath[nPrefix+1]) ){
        /* do nothing */
#ifdef _DIRENT_HAVE_D_TYPE
      }else if( (pEntry->d_type==DT_UNKNOWN || pEntry->d_type==DT_LNK)
          ? (file_isdir(zPath, eFType)==1) : (pEntry->d_type==DT_DIR) ){
#else
      }else if( file_isdir(zPath, eFType)==1 ){
#endif
        if( !vfile_top_of_checkout(zPath) ){
          vfile_scan(pPath, nPrefix, scanFlags, pIgnore1, pIgnore2, eFType);
        }
#ifdef _DIRENT_HAVE_D_TYPE
      }else if( (pEntry->d_type==DT_UNKNOWN || pEntry->d_type==DT_LNK)
          ? (file_isfile_or_link(zPath)) : (pEntry->d_type==DT_REG) ){
#else
      }else if( file_isfile_or_link(zPath) ){
#endif
        if( (scanFlags & SCAN_TEMP)==0 || is_temporary_file(zUtf8) ){
          db_bind_text(&ins, ":file", &zPath[nPrefix+1]);
          if( scanFlags & SCAN_MTIME ){
            db_bind_int(&ins, ":mtime", file_mtime(zPath, eFType));
          }
          if( scanFlags & SCAN_SIZE ){
            db_bind_int(&ins, ":size", file_size(zPath, eFType));
          }
          if( scanFlags & SCAN_ISEXE ){
            db_bind_int(&ins, ":isexe", file_isexe(zPath, eFType));
          }
          db_step(&ins);
          db_reset(&ins);
        }
      }
      fossil_path_free(zUtf8);
      blob_resize(pPath, origSize);
    }
    closedir(d);
  }
  fossil_path_free(zNative);

  depth--;
  if( depth==0 ){
    db_finalize(&ins);
  }
}

/*
** Scans the specified base directory for any directories within it, while
** keeping a count of how many files they each contains, either directly or
** indirectly.
**
** Subdirectories are scanned recursively.
** Omit files named in VFILE.vid
** Omit files named in VFILE.
**
** Directories whose names begin with "." are omitted unless the SCAN_ALL
** flag is set.
**
** Any directories that match the glob patterns pIgnore* are excluded from
** the scan.  Name matching occurs after the first nPrefix characters are
** elided from the filename.
**
** Returns the total number of files found.
*/
int vfile_dir_scan(
void vfile_scan(int vid, Blob *pPath, int nPrefix, int allFlag){
  Blob *pPath,           /* Base directory to be scanned */
  int nPrefix,           /* Number of bytes in base directory name */
  unsigned scanFlags,    /* Zero or more SCAN_xxx flags */
  Glob *pIgnore1,        /* Do not add directories that match this GLOB */
  Glob *pIgnore2,        /* Omit directories matching this GLOB too */
  int eFType             /* ExtFILE or RepoFILE */
){
  int result = 0;
  DIR *d;
  int origSize;
  const char *zDir;
  struct dirent *pEntry;
  int skipAll = 0;
  static const char *zSql = "SELECT 1 FROM vfile "
  static Stmt ins;
                            " WHERE pathname=%Q AND NOT deleted";
  static Stmt upd;
  static int depth = 0;
  void *zNative;

  origSize = blob_size(pPath);
  if( pIgnore1 || pIgnore2 ){
    blob_appendf(pPath, "/");
    if( glob_match(pIgnore1, &blob_str(pPath)[nPrefix+1]) ) skipAll = 1;
    if( glob_match(pIgnore2, &blob_str(pPath)[nPrefix+1]) ) skipAll = 1;
    blob_resize(pPath, origSize);
  }
  if( skipAll ) return result;

  if( depth==0 ){
    db_multi_exec("DROP TABLE IF EXISTS dscan_temp;"
                  "CREATE TEMP TABLE dscan_temp("
                  "  x TEXT PRIMARY KEY %s, y INTEGER)",
                  filename_collation());
    db_prepare(&ins,
       "INSERT OR IGNORE INTO dscan_temp(x, y) SELECT :file, :count"
       "  WHERE NOT EXISTS(SELECT 1 FROM vfile WHERE"
       " pathname GLOB :file || '/*' %s)", filename_collation()
    );
    db_prepare(&upd,
       "UPDATE OR IGNORE dscan_temp SET y = coalesce(y, 0) + 1"
       "  WHERE x=:file %s",
       filename_collation()
    );
  }
  depth++;

  zDir = blob_str(pPath);
  d = opendir(zDir);
  zNative = fossil_utf8_to_path(blob_str(pPath), 1);
  d = opendir(zNative);
  if( d ){
    while( (pEntry=readdir(d))!=0 ){
      char *zOrigPath;
      char *zPath;
      char *zUtf8;
      if( pEntry->d_name[0]=='.' ){
        if( !allFlag ) continue;
        if( (scanFlags & SCAN_ALL)==0 ) continue;
        if( pEntry->d_name[1]==0 ) continue;
        if( pEntry->d_name[1]=='.' && pEntry->d_name[2]==0 ) continue;
      }
      zOrigPath = mprintf("%s", blob_str(pPath));
      zUtf8 = fossil_path_to_utf8(pEntry->d_name);
      blob_appendf(pPath, "/%s", pEntry->d_name);
      blob_appendf(pPath, "/%s", zUtf8);
      zPath = blob_str(pPath);
      if( glob_match(pIgnore1, &zPath[nPrefix+1]) ||
          glob_match(pIgnore2, &zPath[nPrefix+1]) ){
        /* do nothing */
#ifdef _DIRENT_HAVE_D_TYPE
      }else if( (pEntry->d_type==DT_UNKNOWN || pEntry->d_type==DT_LNK)
          ? (file_isdir(zPath, eFType)==1) : (pEntry->d_type==DT_DIR) ){
#else
      if( file_isdir(zPath)==1 ){
        vfile_scan(vid, pPath, nPrefix, allFlag);
      }else if( file_isfile(zPath) && !db_exists(zSql, &zPath[nPrefix+1]) ){
      }else if( file_isdir(zPath, eFType)==1 ){
#endif
        if( (scanFlags & SCAN_NESTED) || !vfile_top_of_checkout(zPath) ){
          char *zSavePath = mprintf("%s", zPath);
          int count = vfile_dir_scan(pPath, nPrefix, scanFlags, pIgnore1,
                                     pIgnore2, eFType);
          db_bind_text(&ins, ":file", &zSavePath[nPrefix+1]);
          db_bind_int(&ins, ":count", count);
          db_step(&ins);
          db_reset(&ins);
          fossil_free(zSavePath);
          result += count; /* found X normal files? */
        }
#ifdef _DIRENT_HAVE_D_TYPE
      }else if( (pEntry->d_type==DT_UNKNOWN || pEntry->d_type==DT_LNK)
          ? (file_isfile_or_link(zPath)) : (pEntry->d_type==DT_REG) ){
#else
      }else if( file_isfile_or_link(zPath) ){
        db_multi_exec("INSERT INTO sfile VALUES(%Q)", &zPath[nPrefix+1]);
#endif
        db_bind_text(&upd, ":file", zOrigPath);
        db_step(&upd);
        db_reset(&upd);
        result++; /* found 1 normal file */
      }
      fossil_path_free(zUtf8);
      blob_resize(pPath, origSize);
      fossil_free(zOrigPath);
    }
    closedir(d);
  }
  fossil_path_free(zNative);
  closedir(d);
}


  depth--;
  if( depth==0 ){
    db_finalize(&upd);
    db_finalize(&ins);
  }
  return result;
}

/*
** Compute an aggregate MD5 checksum over the disk image of every
** file in vid.  The file names are part of the checksum.
** file in vid.  The file names are part of the checksum.  The resulting
** checksum is the same as is expected on the R-card of a manifest.
**
** This function operates differently if the Global.aCommitFile
** variable is not NULL. In that case, the disk image is used for
** each file in aCommitFile[] and the repository image (see
** vfile_aggregate_checksum_repository() is used for all others).
** each file in aCommitFile[] and the repository image
** is used for all others).
**
** Newly added files that are not contained in the repository are
** omitted from the checksum if they are not in Global.aCommitFile.
** omitted from the checksum if they are not in Global.aCommitFile[].
**
** Newly deleted files are included in the checksum if they are not
** part of Global.aCommitFile[]
**
** Renamed files use their new name if they are in Global.aCommitFile[]
** and their original name if they are not in Global.aCommitFile[]
**
** Return the resulting checksum in blob pOut.
*/
void vfile_aggregate_checksum_disk(int vid, Blob *pOut){
  FILE *in;
  Stmt q;
  char zBuf[4096];

  db_must_be_within_tree();
  db_prepare(&q, 
      "SELECT %Q || pathname, pathname, file_is_selected(id), rid FROM vfile"
      " WHERE NOT deleted AND vid=%d"
      " ORDER BY pathname /*scan*/",
  db_prepare(&q,
      "SELECT %Q || pathname, pathname, origname, is_selected(id), rid"
      "  FROM vfile"
      " WHERE (NOT deleted OR NOT is_selected(id)) AND vid=%d"
      " ORDER BY if_selected(id, pathname, origname) /*scan*/",
      g.zLocalRoot, vid
  );
  md5sum_init();
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFullpath = db_column_text(&q, 0);
    const char *zName = db_column_text(&q, 1);
    int isSelected = db_column_int(&q, 2);
    int isSelected = db_column_int(&q, 3);

    if( isSelected ){
      md5sum_step_text(zName, -1);
      if( file_islink(zFullpath) ){
        /* Instead of file content, use link destination path */
        Blob pathBuf;

        sqlite3_snprintf(sizeof(zBuf), zBuf, " %ld\n",
                         blob_read_link(&pathBuf, zFullpath));
        md5sum_step_text(zBuf, -1);
        md5sum_step_text(blob_str(&pathBuf), -1);
        blob_reset(&pathBuf);
      }else{
      in = fopen(zFullpath,"rb");
      if( in==0 ){
        md5sum_step_text(" 0\n", -1);
        continue;
      }
      fseek(in, 0L, SEEK_END);
      sprintf(zBuf, " %ld\n", ftell(in));
      fseek(in, 0L, SEEK_SET);
      md5sum_step_text(zBuf, -1);
      for(;;){
        int n;
        n = fread(zBuf, 1, sizeof(zBuf), in);
        if( n<=0 ) break;
        md5sum_step_text(zBuf, n);
      }
      fclose(in);
        in = fossil_fopen(zFullpath,"rb");
        if( in==0 ){
          md5sum_step_text(" 0\n", -1);
          continue;
        }
        fseek(in, 0L, SEEK_END);
        sqlite3_snprintf(sizeof(zBuf), zBuf, " %ld\n", ftell(in));
        fseek(in, 0L, SEEK_SET);
        md5sum_step_text(zBuf, -1);
        /*printf("%s %s %s",md5sum_current_state(),zName,zBuf);fflush(stdout);*/
        for(;;){
          int n;
          n = fread(zBuf, 1, sizeof(zBuf), in);
          if( n<=0 ) break;
          md5sum_step_text(zBuf, n);
        }
        fclose(in);
      }
    }else{
      int rid = db_column_int(&q, 3);
      int rid = db_column_int(&q, 4);
      const char *zOrigName = db_column_text(&q, 2);
      char zBuf[100];
      Blob file;

      if( zOrigName ) zName = zOrigName;
      if( rid>0 ){
        md5sum_step_text(zName, -1);
        blob_zero(&file);
        content_get(rid, &file);
        sprintf(zBuf, " %d\n", blob_size(&file));
        sqlite3_snprintf(sizeof(zBuf), zBuf, " %d\n", blob_size(&file));
        md5sum_step_text(zBuf, -1);
        md5sum_step_blob(&file);
        blob_reset(&file);
      }
    }
  }
  db_finalize(&q);
  md5sum_finish(pOut);
}

/*
** Write a BLOB into a random filename.  Return the name of the file.
*/
char *write_blob_to_temp_file(Blob *pBlob){
  sqlite3_uint64 r;
  char *zOut = 0;
  do{
    sqlite3_free(zOut);
    sqlite3_randomness(8, &r);
    zOut = sqlite3_mprintf("file-%08llx", r);
  }while( file_size(zOut, ExtFILE)>=0 );
  blob_write_to_file(pBlob, zOut);
  return zOut;
}

/*
** Do a file-by-file comparison of the content of the repository and
** the working check-out on disk.  Report any errors.
*/
void vfile_compare_repository_to_disk(int vid){
  sqlite3_int64 rc;
  Stmt q;
  Blob disk, repo;
  char *zOut;

  db_must_be_within_tree();
  db_prepare(&q,
      "SELECT %Q || pathname, pathname, rid FROM vfile"
      " WHERE NOT deleted AND vid=%d AND is_selected(id)"
      " ORDER BY if_selected(id, pathname, origname) /*scan*/",
      g.zLocalRoot, vid
  );
  md5sum_init();
  while( db_step(&q)==SQLITE_ROW ){
    const char *zFullpath = db_column_text(&q, 0);
    const char *zName = db_column_text(&q, 1);
    int rid = db_column_int(&q, 2);

    blob_zero(&disk);
    rc = blob_read_from_file(&disk, zFullpath, RepoFILE);
    if( rc<0 ){
      fossil_print("ERROR: cannot read file [%s]\n", zFullpath);
      blob_reset(&disk);
      continue;
    }
    blob_zero(&repo);
    content_get(rid, &repo);
    if( blob_size(&repo)!=blob_size(&disk) ){
      fossil_print("ERROR: [%s] is %d bytes on disk but %d in the repository\n",
             zName, blob_size(&disk), blob_size(&repo));
      zOut = write_blob_to_temp_file(&repo);
      fossil_print("NOTICE: Repository version of [%s] stored in [%s]\n",
                   zName, zOut);
      sqlite3_free(zOut);
      blob_reset(&disk);
      blob_reset(&repo);
      continue;
    }
    if( blob_compare(&repo, &disk) ){
      fossil_print(
          "ERROR: [%s] is different on disk compared to the repository\n",
          zName);
      zOut = write_blob_to_temp_file(&repo);
      fossil_print("NOTICE: Repository version of [%s] stored in [%s]\n",
          zName, zOut);
      sqlite3_free(zOut);
    }
    blob_reset(&disk);
    blob_reset(&repo);
  }
  db_finalize(&q);
}

/*
** Compute an aggregate MD5 checksum over the repository image of every
** file in vid.  The file names are part of the checksum.
** file in vid.  The file names are part of the checksum.  The resulting
** checksum is suitable for the R-card of a manifest.
**
** Return the resulting checksum in blob pOut.
*/
void vfile_aggregate_checksum_repository(int vid, Blob *pOut){
  Blob file;
  Stmt q;
  char zBuf[100];

  db_must_be_within_tree();
 
  db_prepare(&q, "SELECT pathname, rid FROM vfile"
                 " WHERE NOT deleted AND rid>0 AND vid=%d"
                 " ORDER BY pathname /*scan*/",

  db_prepare(&q, "SELECT pathname, origname, rid, is_selected(id)"
                 " FROM vfile"
                 " WHERE (NOT deleted OR NOT is_selected(id))"
                 "   AND rid>0 AND vid=%d"
                 " ORDER BY if_selected(id,pathname,origname) /*scan*/",
                 vid);
  blob_zero(&file);
  md5sum_init();
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    const char *zOrigName = db_column_text(&q, 1);
    int rid = db_column_int(&q, 1);
    int rid = db_column_int(&q, 2);
    int isSelected = db_column_int(&q, 3);
    if( zOrigName && !isSelected ) zName = zOrigName;
    md5sum_step_text(zName, -1);
    content_get(rid, &file);
    sprintf(zBuf, " %d\n", blob_size(&file));
    sqlite3_snprintf(sizeof(zBuf), zBuf, " %d\n", blob_size(&file));
    md5sum_step_text(zBuf, -1);
    /*printf("%s %s %s",md5sum_current_state(),zName,zBuf); fflush(stdout);*/
    md5sum_step_blob(&file);
    blob_reset(&file);
  }
  db_finalize(&q);
  md5sum_finish(pOut);
}

/*
** Compute an aggregate MD5 checksum over the repository image of every
** file in manifest vid.  The file names are part of the checksum.
** file in manifest vid.  The file names are part of the checksum.  The
** resulting checksum is suitable for use as the R-card of a manifest.
**
** Return the resulting checksum in blob pOut.
**
** If pManOut is not NULL then fill it with the checksum found in the
** "R" card near the end of the manifest.  
** "R" card near the end of the manifest.
**
** In a well-formed manifest, the two checksums computed here, pOut and
** pManOut, should be identical.
*/
void vfile_aggregate_checksum_manifest(int vid, Blob *pOut, Blob *pManOut){
  int i, fid;
  Blob file, mfile;
  Manifest m;
  int fid;
  Blob file;
  Blob err;
  Manifest *pManifest;
  ManifestFile *pFile;
  char zBuf[100];

  blob_zero(pOut);
  blob_zero(&err);
  if( pManOut ){
    blob_zero(pManOut);
  }
  db_must_be_within_tree();
  content_get(vid, &mfile);
  if( manifest_parse(&m, &mfile)==0 ){
    fossil_panic("manifest file (%d) is malformed", vid);
  pManifest = manifest_get(vid, CFTYPE_MANIFEST, &err);
  if( pManifest==0 ){
    fossil_fatal("manifest file (%d) is malformed:\n%s",
                 vid, blob_str(&err));
  }
  manifest_file_rewind(pManifest);
  while( (pFile = manifest_file_next(pManifest,0))!=0 ){
  for(i=0; i<m.nFile; i++){
    fid = uuid_to_rid(m.aFile[i].zUuid, 0);
    md5sum_step_text(m.aFile[i].zName, -1);
    if( pFile->zUuid==0 ) continue;
    fid = uuid_to_rid(pFile->zUuid, 0);
    md5sum_step_text(pFile->zName, -1);
    content_get(fid, &file);
    sprintf(zBuf, " %d\n", blob_size(&file));
    sqlite3_snprintf(sizeof(zBuf), zBuf, " %d\n", blob_size(&file));
    md5sum_step_text(zBuf, -1);
    md5sum_step_blob(&file);
    blob_reset(&file);
  }
  if( pManOut ){
    if( pManifest->zRepoCksum ){
    blob_append(pManOut, m.zRepoCksum, -1);
  }
  manifest_clear(&m);
      blob_append(pManOut, pManifest->zRepoCksum, -1);
    }else{
      blob_zero(pManOut);
    }
  }
  manifest_destroy(pManifest);
  md5sum_finish(pOut);
}

/*
** COMMAND: test-agg-cksum
**
** Display the aggregate checksum for content computed in several
** different ways.  The aggregate checksum is used during "fossil commit"
** to double-check that the information about to be committed to the
** repository exactly matches the information currently in the check-out.
*/
void test_agg_cksum_cmd(void){
  int vid;
  Blob hash, hash2;
  db_must_be_within_tree();
  vid = db_lget_int("checkout", 0);
  vfile_aggregate_checksum_disk(vid, &hash);
  printf("disk:     %s\n", blob_str(&hash));
  blob_reset(&hash);
  vfile_aggregate_checksum_repository(vid, &hash);
  printf("archive:  %s\n", blob_str(&hash));
  blob_reset(&hash);
  vfile_aggregate_checksum_manifest(vid, &hash, &hash2);
  printf("manifest: %s\n", blob_str(&hash));
  printf("recorded: %s\n", blob_str(&hash2));
}

/*
** This routine recomputes certain columns of the vfile and vmerge tables
** when the associated repository is swapped out for a clone of the same
** project, and the blob.rid value change.  The following columns are
** updated:
**
**      vmerge.merge
**      vfile.vid
**      vfile.rid
**      vfile.mrid
**
** Also:
**
**      vvar.value WHERE name='checkout'
*/
void vfile_rid_renumbering_event(int dryRun){
  int oldVid;
  int newVid;
  char *zUnresolved;

  oldVid = db_lget_int("checkout", 0);
  newVid = db_int(0, "SELECT blob.rid FROM blob, vvar"
                     " WHERE blob.uuid=vvar.value"
                     "   AND vvar.name='checkout-hash'");

  /* The idMap table will make old RID values into new ones */
  db_multi_exec(
    "CREATE TEMP TABLE idMap(oldrid INTEGER PRIMARY KEY, newrid INT);\n"
  );

  /* Add the RID value for the current check-out */
  db_multi_exec(
    "INSERT INTO idMap(oldrid, newrid) VALUES(%d,%d)",
    oldVid, newVid
  );

  /* Add the RID values for any other check-ins that have been merged into
  ** the current check-out. */
  db_multi_exec(
    "INSERT OR IGNORE INTO idMap(oldrid, newrid)"
    "  SELECT vmerge.merge, blob.rid FROM vmerge, blob"
    "   WHERE blob.uuid=vmerge.mhash;"
  );

  /* Add RID values for files in the current check-out */
  db_multi_exec(
    "CREATE TEMP TABLE hashoffile(name TEXT PRIMARY KEY, hash TEXT)"
    "WITHOUT ROWID;"

    "INSERT INTO hashoffile(name,hash)"
    "  SELECT filename, uuid FROM vvar, files_of_checkin(vvar.value)"
    "   WHERE vvar.name='checkout-hash';"

    "INSERT OR IGNORE INTO idMap(oldrid, newrid)"
    "  SELECT vfile.rid, blob.rid FROM vfile, hashoffile, blob"
    "   WHERE hashoffile.name=coalesce(vfile.origname,vfile.pathname)"
    "     AND blob.uuid=hashoffile.hash;"
  );

  /* Add RID values for merged-in files */
  db_multi_exec(
    "INSERT OR IGNORE INTO idMap(oldrid, newrid)"
    " SELECT vfile.mrid, blob.rid FROM vfile, blob"
    "  WHERE blob.uuid=vfile.mhash;"
  );

  if( dryRun ){
    Stmt q;
    db_prepare(&q, "SELECT oldrid, newrid, blob.uuid"
                   "  FROM idMap, blob WHERE blob.rid=idMap.newrid");
    while( db_step(&q)==SQLITE_ROW ){
      fossil_print("%8d -> %8d  %.25s\n",
         db_column_int(&q,0),
         db_column_int(&q,1),
         db_column_text(&q,2));
    }
    db_finalize(&q);
  }

  /* Verify that all RID values in the VFILE table and VMERGE table have
  ** been resolved. */
  zUnresolved = db_text("",
     "WITH allrid(x) AS ("
     "  SELECT rid FROM vfile"
     "  UNION SELECT mrid FROM vfile"
     "  UNION SELECT merge FROM vmerge"
     "  UNION SELECT %d"
     ")"
     "SELECT group_concat(x,' ') FROM allrid"
     " WHERE x<>0 AND x NOT IN (SELECT oldrid FROM idMap);",
     oldVid
  );
  if( zUnresolved[0] ){
    fossil_fatal("Unresolved RID values: %s\n"
        "\n"
        "Local check-out database is out of sync with repository file:\n"
        "\n"
        "    %s\n"
        "\n"
        "Has the repository file been replaced?\n",
        zUnresolved, db_repository_filename());
  }

  /* Make the changes to the VFILE and VMERGE tables */
  if( !dryRun ){
    db_multi_exec(
      "UPDATE vfile"
      "   SET rid=(SELECT newrid FROM idMap WHERE oldrid=vfile.rid)"
      " WHERE vid=%d AND rid>0;", oldVid);

    db_multi_exec(
      "UPDATE vfile"
      "   SET mrid=(SELECT newrid FROM idMap WHERE oldrid=vfile.mrid)"
      " WHERE vid=%d AND mrid>0;", oldVid);

    db_multi_exec(
      "UPDATE vfile"
      "   SET vid=%d"
      " WHERE vid=%d", newVid, oldVid);

    db_multi_exec(
      "UPDATE vmerge"
      "   SET merge=(SELECT newrid FROM idMap WHERE oldrid=vmerge.merge);");

    db_lset_int("checkout",newVid);
  }

  /* Clear out the TEMP tables we constructed */
  db_multi_exec(
    "DROP TABLE idMap;"
    "DROP TABLE hashoffile;"
  );
}
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1656


1657
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1665

1666

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1669





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1673
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1692

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1704
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1715
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1718
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1729
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1739








1740
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1754
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1763
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1777
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1831
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1836

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1849




1850
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1861
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1877
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1879
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1886







1887
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1900
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1910


1911


1912
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1914
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1961

1962
1963
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1966
1967

1968
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1975
1976
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1978
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1980


1981
1982
1983




1984
1985
1986
1987
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1989
1990
1991
1992






1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025

2026
2027
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2029
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2031


2032
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2044
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2046
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2066
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2068

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2083

2084

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2098
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2100
2101
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2107




2108
2109
2110


2111
2112
2113
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2161
2162
2163
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2165
2166
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2168
2169
2170
2171
2172
2173

2174
2175
2176
2177

2178
2179

2180
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2182


2183
2184


2185
2186
2187
2188


2189
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2208
2209
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2211
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2222
2223
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2225
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2236
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2239
2240


2241
2242


2243
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2245
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2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257

2258
2259
2260
2261
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2263


2264
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2266
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2268
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2273
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2283
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2309










2310
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2320








2321
2322
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2325
2326
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2329
2330
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2333
2334
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2340
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2356




2357
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2442
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2453
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2480
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2490
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2500
2501
2502
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2512
2513

2514
2515
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2517

2518
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2626
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2628
2629
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2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645







-
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+


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-
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-
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-
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/*
** Copyright (c) 2007 D. Richard Hipp
** Copyright (c) 2008 Stephan Beal
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to do formatting of wiki text.
*/
#include "config.h"
#include <assert.h>
#include <ctype.h>
#include "config.h"
#include "wiki.h"

/*
** Return true if the input string is a well-formed wiki page name.
**
** Well-formed wiki page names do not begin or end with whitespace,
** and do not contain tabs or other control characters and do not
** contain more than a single space character in a row.  Well-formed
** names must be between 3 and 100 chracters in length, inclusive.
** names must be between 1 and 100 characters in length, inclusive.
*/
int wiki_name_is_wellformed(const unsigned char *z){
  int i;
  if( z[0]<=0x20 ){
    return 0;
  }
  for(i=1; z[i]; i++){
    if( z[i]<0x20 ) return 0;
    if( z[i]==0x20 && z[i-1]==0x20 ) return 0;
  }
  if( z[i-1]==' ' ) return 0;
  if( i<3 || i>100 ) return 0;
  if( i<1 || i>100 ) return 0;
  return 1;
}

/*
** Output rules for well-formed wiki pages
*/
static void well_formed_wiki_name_rules(void){
  @ <ul>
  @ <li> Must not begin or end with a space.
  @ <li> Must not begin or end with a space.</li>
  @ <li> Must not contain any control characters, including tab or
  @      newline.
  @ <li> Must not have two or more spaces in a row internally.
  @ <li> Must be between 3 and 100 characters in length.
  @      newline.</li>
  @ <li> Must not have two or more spaces in a row internally.</li>
  @ <li> Must be between 1 and 100 characters in length.</li>
  @ </ul>
}

/*
** Check a wiki name.  If it is not well-formed, then issue an error
** and return true.  If it is well-formed, return false.
*/
static int check_name(const char *z){
  if( !wiki_name_is_wellformed((const unsigned char *)z) ){
    style_set_current_feature("wiki");
    style_header("Wiki Page Name Error");
    @ The wiki name "<b>%h(z)</b>" is not well-formed.  Rules for
    @ wiki page names:
    @ The wiki name "<span class="wikiError">%h(z)</span>" is not well-formed.
    @ Rules for wiki page names:
    well_formed_wiki_name_rules();
    style_footer();
    style_finish_page();
    return 1;
  }
  return 0;
}

/*
** Return the tagid associated with a particular wiki page.
*/
int wiki_tagid(const char *zPageName){
  return db_int(0, "SELECT tagid FROM tag WHERE tagname='wiki-%q'",zPageName);
}
int wiki_tagid2(const char *zPrefix, const char *zPageName){
  return db_int(0, "SELECT tagid FROM tag WHERE tagname='wiki-%q/%q'",
                zPrefix, zPageName);
}

/*
** Return the RID of the next or previous version of a wiki page.
** Return 0 if rid is the last/first version.
*/
int wiki_next(int tagid, double mtime){
  return db_int(0,
     "SELECT srcid FROM tagxref"
     " WHERE tagid=%d AND mtime>%.16g"
     " ORDER BY mtime ASC LIMIT 1",
     tagid, mtime);
}
int wiki_prev(int tagid, double mtime){
  return db_int(0,
     "SELECT srcid FROM tagxref"
     " WHERE tagid=%d AND mtime<%.16g"
     " ORDER BY mtime DESC LIMIT 1",
     tagid, mtime);
}

/*
** WEBPAGE: home
** WEBPAGE: index
** WEBPAGE: not_found
**
** The /home, /index, and /not_found pages all redirect to the homepage
** configured by the administrator.
*/
void home_page(void){
  char *zPageName = db_get("project-name",0);
  char *zIndexPage = db_get("index-page",0);
  login_check_credentials();
  cgi_check_for_malice();
  if( zIndexPage ){
    const char *zPathInfo = P("PATH_INFO");
    while( zIndexPage[0]=='/' ) zIndexPage++;
    while( zPathInfo[0]=='/' ) zPathInfo++;
    if( fossil_strcmp(zIndexPage, zPathInfo)==0 ) zIndexPage = 0;
  }
  if( zIndexPage ){
    cgi_redirectf("%R/%s", zIndexPage);
  }
  if( !g.okRdWiki ){
    cgi_redirectf("%s/login?g=%s/home", g.zBaseURL, g.zBaseURL);
  if( !g.perm.RdWiki ){
    cgi_redirectf("%R/login?g=home");
  }
  if( zPageName ){
    login_check_credentials();
    g.zExtra = zPageName;
    cgi_set_parameter_nocopy("name", g.zExtra);
    cgi_set_parameter_nocopy("name", g.zExtra, 1);
    g.isHome = 1;
    wiki_page();
    return;
  }
  style_set_current_feature("wiki");
  style_header("Home");
  @ <p>This is a stub home-page for the project.
  @ To fill in this page, first go to
  @ <a href="%s(g.zBaseURL)/setup_config">setup/config</a>
  @ %z(href("%R/setup_config"))setup/config</a>
  @ and establish a "Project Name".  Then create a
  @ wiki page with that name.  The content of that wiki page
  @ will be displayed in place of this message.
  style_footer();
  @ will be displayed in place of this message.</p>
  style_finish_page();
}

/*
** Return true if the given pagename is the name of the sandbox
*/
static int is_sandbox(const char *zPagename){
  return strcasecmp(zPagename,"sandbox")==0 ||
         strcasecmp(zPagename,"sand box")==0;
  return fossil_stricmp(zPagename,"sandbox")==0 ||
         fossil_stricmp(zPagename,"sand box")==0;
}

/*
** Formal, common and short names for the various wiki styles.
*/
static const char *const azStyles[] = {
  "text/x-fossil-wiki", "Fossil Wiki", "wiki",
  "text/x-markdown",    "Markdown",    "markdown",
  "text/plain",         "Plain Text",  "plain"
};

/*
** Only allow certain mimetypes through.
** All others become "text/x-fossil-wiki"
*/
const char *wiki_filter_mimetypes(const char *zMimetype){
  if( zMimetype!=0 ){
    int i;
    for(i=0; i<count(azStyles); i+=3){
      if( fossil_strcmp(zMimetype,azStyles[i+2])==0 ){
        return azStyles[i];
      }
    }
    if(  fossil_strcmp(zMimetype, "text/x-markdown")==0
        || fossil_strcmp(zMimetype, "text/plain")==0 ){
      return zMimetype;
    }
  }
  return "text/x-fossil-wiki";
}

/*
** Render wiki text according to its mimetype.
**
**   text/x-fossil-wiki      Fossil wiki
**   text/x-markdown         Markdown
**   text/x-pikchr           Pikchr
**   anything else...        Plain text
**
** If zMimetype is a null pointer, then use "text/x-fossil-wiki".
*/
void wiki_render_by_mimetype(Blob *pWiki, const char *zMimetype){
  if( zMimetype==0 || fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
    wiki_convert(pWiki, 0, 0);
  }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
    Blob tail = BLOB_INITIALIZER;
    markdown_to_html(pWiki, 0, &tail);
    safe_html(&tail);
    @ %s(blob_str(&tail))
    blob_reset(&tail);
  }else if( fossil_strcmp(zMimetype, "text/x-pikchr")==0 ){
    int isPopup = P("popup")!=0;
    const char *zPikchr = blob_str(pWiki);
    int w, h;
    char *zOut = pikchr(zPikchr, "pikchr", 0, &w, &h);
    if( w>0 ){
      if( isPopup ) cgi_set_content_type("image/svg+xml");
      else{
        @ <div class="pikchr-svg" style="max-width:%d(w)px">
      }
      @ %s(zOut)
      if( !isPopup){
        @ </div>
      }
    }else{
      @ <pre class='error'>
      @ %h(zOut)
      @ </pre>
    }
    free(zOut);
  }else{
    @ <pre class='textPlain'>
    @ %h(blob_str(pWiki))
    @ </pre>
  }
}

/*
** WEBPAGE: md_rules
**
** Show a summary of the Markdown wiki formatting rules.
*/
void markdown_rules_page(void){
  Blob x;
  int fTxt = P("txt")!=0;
  style_set_current_feature("wiki");
  style_header("Markdown Formatting Rules");
  if( fTxt ){
    style_submenu_element("Formatted", "%R/md_rules");
  }else{
    style_submenu_element("Plain-Text", "%R/md_rules?txt=1");
  }
  style_submenu_element("Wiki", "%R/wiki_rules");
  blob_init(&x, builtin_text("markdown.md"), -1);
  blob_materialize(&x);
  interwiki_append_map_table(&x);
  safe_html_context(DOCSRC_TRUSTED);
  wiki_render_by_mimetype(&x, fTxt ? "text/plain" : "text/x-markdown");
  blob_reset(&x);
  style_finish_page();
}

/*
** WEBPAGE: wiki_rules
**
** Show a summary of the wiki formatting rules.
*/
void wiki_rules_page(void){
  Blob x;
  int fTxt = P("txt")!=0;
  style_set_current_feature("wiki");
  style_header("Wiki Formatting Rules");
  if( fTxt ){
    style_submenu_element("Formatted", "%R/wiki_rules");
  }else{
    style_submenu_element("Plain-Text", "%R/wiki_rules?txt=1");
  }
  style_submenu_element("Markdown","%R/md_rules");
  blob_init(&x, builtin_text("wiki.wiki"), -1);
  blob_materialize(&x);
  interwiki_append_map_table(&x);
  safe_html_context(DOCSRC_TRUSTED);
  wiki_render_by_mimetype(&x, fTxt ? "text/plain" : "text/x-fossil-wiki");
  blob_reset(&x);
  style_finish_page();
}

/*
** WEBPAGE: markup_help
**
** Show links to the md_rules and wiki_rules pages.
*/
void markup_help_page(void){
  style_set_current_feature("wiki");
  style_header("Fossil Markup Styles");
  @ <ul>
  @ <li><p>%z(href("%R/wiki_rules"))Fossil Wiki Formatting Rules</a></p></li>
  @ <li><p>%z(href("%R/md_rules"))Markdown Formatting Rules</a></p></li>
  @ </ul>
  style_finish_page();
}

/*
** Returns non-zero if moderation is required for wiki changes and wiki
** attachments.
*/
int wiki_need_moderation(
  int localUser /* Are we being called for a local interactive user? */
){
  /*
  ** If the FOSSIL_FORCE_WIKI_MODERATION variable is set, *ALL* changes for
  ** wiki pages will be required to go through moderation (even those performed
  ** by the local interactive user via the command line).  This can be useful
  ** for local (or remote) testing of the moderation subsystem and its impact
  ** on the contents and status of wiki pages.
  */
  if( fossil_getenv("FOSSIL_FORCE_WIKI_MODERATION")!=0 ){
    return 1;
  }
  if( localUser ){
    return 0;
  }
  return g.perm.ModWiki==0 && db_get_boolean("modreq-wiki",0)==1;
}

/* Standard submenu items for wiki pages */
#define W_SRCH        0x00001
#define W_LIST        0x00002
#define W_HELP        0x00004
#define W_NEW         0x00008
#define W_BLOG        0x00010
#define W_SANDBOX     0x00020
#define W_ALL         0x0001f
#define W_ALL_BUT(x)  (W_ALL&~(x))

/*
** Add some standard submenu elements for wiki screens.
*/
static void wiki_standard_submenu(unsigned int ok){
  if( (ok & W_SRCH)!=0 && search_restrict(SRCH_WIKI)!=0 ){
    style_submenu_element("Search", "%R/wikisrch");
  }
  if( (ok & W_LIST)!=0 ){
    style_submenu_element("List", "%R/wcontent");
  }
  if( (ok & W_HELP)!=0 ){
    style_submenu_element("Help", "%R/wikihelp");
  }
  if( (ok & W_NEW)!=0 && g.anon.NewWiki ){
    style_submenu_element("New", "%R/wikinew");
  }
  if( (ok & W_SANDBOX)!=0 ){
    style_submenu_element("Sandbox", "%R/wikiedit?name=Sandbox");

  }
}

/*
** WEBPAGE: wikihelp
** A generic landing page for wiki.
*/
void wiki_helppage(void){
  login_check_credentials();
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  style_set_current_feature("wiki");
  style_header("Wiki Help");
  wiki_standard_submenu(W_ALL_BUT(W_HELP));
  @ <h2>Wiki Links</h2>
  @ <ul>
  @ <li> %z(href("%R/timeline?y=w"))Recent changes</a> to wiki pages.</li>
  @ <li> Formatting rules for %z(href("%R/wiki_rules"))Fossil Wiki</a> and for
  @ %z(href("%R/md_rules"))Markdown Wiki</a>.</li>
  @ <li> Use the %z(href("%R/wikiedit?name=Sandbox"))Sandbox</a>
  @      to experiment.</li>
  if( g.perm.NewWiki ){
    @ <li>  Create a %z(href("%R/wikinew"))new wiki page</a>.</li>
    if( g.perm.Write ){
      @ <li>   Create a %z(href("%R/technoteedit"))new tech-note</a>.</li>
    }
  }
  @ <li> %z(href("%R/wcontent"))List of All Wiki Pages</a>
  @      available on this server.</li>
  @ <li> %z(href("%R/timeline?y=e"))List of All Tech-notes</a>
  @      available on this server.</li>
  if( g.perm.ModWiki ){
    @ <li> %z(href("%R/modreq"))Tend to pending moderation requests</a></li>
  }
  if( search_restrict(SRCH_WIKI)!=0 ){
    @ <li> %z(href("%R/wikisrch"))Search</a> for wiki pages containing key
    @ words</li>
  }
  @ </ul>
  style_finish_page();
  return;
}

/*
** WEBPAGE: wikisrch
** Usage:  /wikisrch?s=PATTERN
**
** Full-text search of all current wiki text
*/
void wiki_srchpage(void){
  login_check_credentials();
  style_set_current_feature("wiki");
  style_header("Wiki Search");
  wiki_standard_submenu(W_HELP|W_LIST|W_SANDBOX);
  search_screen(SRCH_WIKI, 0);
  style_finish_page();
}

/* Return values from wiki_page_type() */
#if INTERFACE
# define WIKITYPE_UNKNOWN    (-1)
# define WIKITYPE_NORMAL     0
# define WIKITYPE_BRANCH     1
# define WIKITYPE_CHECKIN    2
# define WIKITYPE_TAG        3
#endif

/*
** Figure out what type of wiki page we are dealing with.
*/
int wiki_page_type(const char *zPageName){
  if( db_get_boolean("wiki-about",1)==0 ){
    return WIKITYPE_NORMAL;
  }else
  if( sqlite3_strglob("checkin/*", zPageName)==0
   && db_exists("SELECT 1 FROM blob WHERE uuid=%Q",zPageName+8)
  ){
    return WIKITYPE_CHECKIN;
  }else
  if( sqlite3_strglob("branch/*", zPageName)==0 ){
    return WIKITYPE_BRANCH;
  }else
  if( sqlite3_strglob("tag/*", zPageName)==0 ){
    return WIKITYPE_TAG;
  }
  return WIKITYPE_NORMAL;
}

/*
** Returns a JSON-friendly string form of the integer value returned
** by wiki_page_type(zPageName).
*/
const char * wiki_page_type_name(const char *zPageName){
  switch(wiki_page_type(zPageName)){
    case WIKITYPE_CHECKIN: return "checkin";
    case WIKITYPE_BRANCH: return "branch";
    case WIKITYPE_TAG: return "tag";
    case WIKITYPE_NORMAL:
    default: return "normal";
  }
}

/*
** Add an appropriate style_header() for either the /wiki or /wikiedit page
** for zPageName.  zExtra is an empty string for /wiki but has the text
** "Edit: " for /wikiedit.
**
** If the page is /wiki and the page is one of the special times (check-in,
** branch, or tag) and the "p" query parameter is omitted, then do a
** redirect to the display of the check-in, branch, or tag rather than
** continuing to the plain wiki display.
*/
static int wiki_page_header(
  int eType,                /* Page type.  Might be WIKITYPE_UNKNOWN */
  const char *zPageName,    /* Name of the page */
  const char *zExtra        /* Extra prefix text on the page header */
){
  style_set_current_feature("wiki");
  if( eType==WIKITYPE_UNKNOWN ) eType = wiki_page_type(zPageName);
  switch( eType ){
    case WIKITYPE_NORMAL: {
      style_header("%s%s", zExtra, zPageName);
      break;
    }
    case WIKITYPE_CHECKIN: {
      zPageName += 8;
      if( zExtra[0]==0 && !P("p") ){
        cgi_redirectf("%R/info/%s",zPageName);
      }else{
        style_header("Notes About Check-in %S", zPageName);
        style_submenu_element("Check-in Timeline","%R/timeline?f=%s",
                              zPageName);
        style_submenu_element("Check-in Info","%R/info/%s", zPageName);
      }
      break;
    }
    case WIKITYPE_BRANCH: {
      zPageName += 7;
      if( zExtra[0]==0 && !P("p") ){
        cgi_redirectf("%R/timeline?r=%t", zPageName);
      }else{
        style_header("Notes About Branch %h", zPageName);
        style_submenu_element("Branch Timeline","%R/timeline?r=%t", zPageName);
      }
      break;
    }
    case WIKITYPE_TAG: {
      zPageName += 4;
      if( zExtra[0]==0 && !P("p") ){
        cgi_redirectf("%R/timeline?t=%t",zPageName);
      }else{
        style_header("Notes About Tag %h", zPageName);
        style_submenu_element("Tag Timeline","%R/timeline?t=%t",zPageName);
      }
      break;
    }
  }
  return eType;
}

/*
** Wiki pages with special names "branch/...", "checkin/...", and "tag/..."
** requires perm.Write privilege in addition to perm.WrWiki in order
** to write.  This function determines whether the extra perm.Write
** is required and available.  Return true if writing to the wiki page
** may proceed, and return false if permission is lacking.
*/
static int wiki_special_permission(const char *zPageName){
  if( strncmp(zPageName,"branch/",7)!=0
   && strncmp(zPageName,"checkin/",8)!=0
   && strncmp(zPageName,"tag/",4)!=0
  ){
    return 1;
  }
  if( db_get_boolean("wiki-about",1)==0 ){
    return 1;
  }
  return g.perm.Write;
}

/*
** WEBPAGE: wiki
**
** URL: /wiki?name=PAGENAME
** Display a wiki page.  Example:  /wiki?name=PAGENAME
**
** Query parameters:
**
**    name=NAME        Name of the wiki page to display.  Required.
**    nsm              Omit the submenu if present.  (Mnemonic: No SubMenu)
**    p                Always show just the wiki page.  For special
**                     pages for check-ins, branches, or tags, there will
**                     be a redirect to the associated /info page unless
**                     this query parameter is present.
**    popup            Suppress the header and footer and other page
**                     boilerplate and only return the formatted content
**                     of the wiki page.
*/
void wiki_page(void){
  char *zTag;
  int rid = 0;
  int isSandbox;
  unsigned submenuFlags = W_HELP;
  Blob wiki;
  Manifest m;
  Manifest *pWiki = 0;
  const char *zPageName;
  const char *zMimetype = 0;
  int isPopup = P("popup")!=0;
  char *zBody = mprintf("%s","<i>Empty Page</i>");
  Stmt q;
  int cnt = 0;
  int noSubmenu = P("nsm")!=0 || g.isHome;

  login_check_credentials();
  if( !g.okRdWiki ){ login_needed(); return; }
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  zPageName = P("name");
  (void)P("s")/*for cgi_check_for_malice(). "s" == search stringy*/;
  cgi_check_for_malice();
  if( zPageName==0 ){
    style_header("Wiki");
    @ <ul>
    { char *zHomePageName = db_get("project-name",0);
      if( zHomePageName ){
    if( search_restrict(SRCH_WIKI)!=0 ){
        @ <li> <a href="%s(g.zBaseURL)/wiki?name=%t(zHomePageName)">
        @      %h(zHomePageName)</a> wiki home page.</li>
      }
      wiki_srchpage();
    }else{
    }
    @ <li> <a href="%s(g.zBaseURL)/timeline?y=w">Recent changes</a> to wiki
    @      pages. </li>
    @ <li> <a href="%s(g.zBaseURL)/wiki_rules">Formatting rules</a> for 
    @      wiki.</li>
      wiki_helppage();
    @ <li> Use the <a href="%s(g.zBaseURL)/wiki?name=Sandbox">Sandbox</a>
    @      to experiment.</li>
    if( g.okNewWiki ){
      @ <li>  Create a <a href="%s(g.zBaseURL)/wikinew">new wiki page</a>.</li>
    }
    @ <li> <a href="%s(g.zBaseURL)/wcontent">List of All Wiki Pages</a>
    @      available on this server.</li>
	@ <li> <form method="GET" action="%s(g.zBaseURL)/wfind">
	@     Search wiki titles: <input type="text" name="title"/>
        @  &nbsp; <input type="submit" />
	@ </li>
    @ </ul>
    style_footer();
    return;
  }
  if( check_name(zPageName) ) return;
  isSandbox = is_sandbox(zPageName);
  if( isSandbox ){
    submenuFlags &= ~W_SANDBOX;
    zBody = db_get("sandbox",zBody);
  }else{
    zTag = mprintf("wiki-%s", zPageName);
    rid = db_int(0, 
    zMimetype = db_get("sandbox-mimetype","text/x-fossil-wiki");
    rid = 0;
      "SELECT rid FROM tagxref"
      " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
      " ORDER BY mtime DESC", zTag
    );
    free(zTag);
    memset(&m, 0, sizeof(m));
    blob_zero(&m.content);
    if( rid ){
      Blob content;
      content_get(rid, &content);
      manifest_parse(&m, &content);
      if( m.type==CFTYPE_WIKI && m.zWiki ){
        while( isspace(m.zWiki[0]) ) m.zWiki++;
        if( m.zWiki[0] ) zBody = m.zWiki;
      }
    }
  }
  if( !g.isHome ){
    if( (rid && g.okWrWiki) || (!rid && g.okNewWiki) ){
      style_submenu_element("Edit", "Edit Wiki Page", "%s/wikiedit?name=%T",
           g.zTop, zPageName);
    }
    if( rid && g.okApndWiki && g.okAttach ){
      style_submenu_element("Attach", "Add An Attachment",
           "%s/attachadd?page=%T&from=%s/wiki%%3fname=%T",
           g.zTop, zPageName, g.zTop, zPageName);
    }
    if( rid && g.okApndWiki ){
      style_submenu_element("Append", "Add A Comment", "%s/wikiappend?name=%T",
           g.zTop, zPageName);
    }
    if( g.okHistory ){
      style_submenu_element("History", "History", "%s/whistory?name=%T",
           g.zTop, zPageName);
    }
  }
  style_header(zPageName);
  blob_init(&wiki, zBody, -1);
  wiki_convert(&wiki, 0, 0);
  blob_reset(&wiki);

  db_prepare(&q,
     "SELECT datetime(mtime,'localtime'), filename, user"
     "  FROM attachment"
     " WHERE isLatest AND src!='' AND target=%Q"
     " ORDER BY mtime DESC",
     zPageName);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zDate = db_column_text(&q, 0);
    const char *zFile = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    if( cnt==0 ){
      @ <hr><h2>Attachments:</h2>
      @ <ul>
    }
    cnt++;
    if( g.okHistory ){
      @ <li><a href="%s(g.zTop)/attachview?page=%s(zPageName)&file=%t(zFile)">
    }else{
  }else{
      @ <li>
    }
    @ %h(zFile)</a> add by %h(zUser) on
    hyperlink_to_date(zDate, ".");
    if( g.okWrWiki && g.okAttach ){
      @ [<a href="%s(g.zTop)/attachdelete?page=%s(zPageName)&file=%t(zFile)&from=%s(g.zTop)/wiki%%3fname=%s(zPageName)">delete</a>]
    }
  }
  if( cnt ){
    @ </ul>
  }
  db_finalize(&q);
 
  if( !isSandbox ){
    manifest_clear(&m);
  }
  style_footer();
}

/*
** WEBPAGE: wikiedit
** URL: /wikiedit?name=PAGENAME
*/
void wikiedit_page(void){
  char *zTag;
  int rid = 0;
  int isSandbox;
  Blob wiki;
  Manifest m;
  const char *zPageName;
  char *zHtmlPageName;
  int n;
  const char *z;
    const char *zUuid = P("id");
  char *zBody = (char*)P("w");

    if( zUuid==0 || (rid = symbolic_name_to_rid(zUuid,"w"))==0 ){
  if( zBody ){
    zBody = mprintf("%s", zBody);
  }
  login_check_credentials();
  zPageName = PD("name","");
  if( check_name(zPageName) ) return;
  isSandbox = is_sandbox(zPageName);
  if( isSandbox ){
    if( !g.okWrWiki ){
      login_needed();
      return;
    }
    if( zBody==0 ){
      zBody = db_get("sandbox","");
    }
  }else{
    zTag = mprintf("wiki-%s", zPageName);
    rid = db_int(0, 
      "SELECT rid FROM tagxref"
      " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
      " ORDER BY mtime DESC", zTag
    );
    free(zTag);
    if( (rid && !g.okWrWiki) || (!rid && !g.okNewWiki) ){
      login_needed();
      zTag = mprintf("wiki-%s", zPageName);
      rid = db_int(0,
        "SELECT rid FROM tagxref"
        " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
        " ORDER BY mtime DESC", zTag
      );
      free(zTag);
    }
    pWiki = manifest_get(rid, CFTYPE_WIKI, 0);
    if( pWiki ){
      zBody = pWiki->zWiki;
      zMimetype = pWiki->zMimetype;
    }
  }
  zMimetype = wiki_filter_mimetypes(zMimetype);
  if( !noSubmenu ){
    if( ((rid && g.perm.WrWiki) || (!rid && g.perm.NewWiki))
     && wiki_special_permission(zPageName)
    ){
      return;
      style_submenu_element("Edit", "%R/wikiedit?name=%T", zPageName);
    }else if( rid && g.perm.ApndWiki ){
      style_submenu_element("Edit", "%R/wikiappend?name=%T", zPageName);
    }
    if( g.perm.Hyperlink ){
      style_submenu_element("History", "%R/whistory?name=%T", zPageName);
    }
  }
    memset(&m, 0, sizeof(m));
    blob_zero(&m.content);
    if( rid && zBody==0 ){
      Blob content;
      content_get(rid, &content);
      manifest_parse(&m, &content);
      if( m.type==CFTYPE_WIKI ){
        zBody = m.zWiki;
      }
    }
  }
  if( P("submit")!=0 && zBody!=0 ){
    char *zDate;
    Blob cksum;
    int nrid;
    blob_zero(&wiki);
    db_begin_transaction();
    if( isSandbox ){
      db_set("sandbox",zBody,0);
  if( !isPopup ){
    style_set_current_page("%T?name=%T", g.zPath, zPageName);
    wiki_page_header(WIKITYPE_UNKNOWN, zPageName, "");
    if( !noSubmenu ){
      wiki_standard_submenu(submenuFlags);
    }
  }
  if( zBody[0]==0 ){
    @ <i>This page has been deleted</i>
  }else{
    blob_init(&wiki, zBody, -1);
    safe_html_context(DOCSRC_WIKI);
    wiki_render_by_mimetype(&wiki, zMimetype);
    blob_reset(&wiki);
  }
  manifest_destroy(pWiki);
  if( !isPopup ){
    char * zLabel = mprintf("<hr><h2><a href='%R/attachlist?name=%T'>"
                            "Attachments</a>:</h2><ul>",
                            zPageName);
    attachment_list(zPageName, zLabel);
    fossil_free(zLabel);
    document_emit_js(/*for optional pikchr support*/);
    style_finish_page();
  }
}

/*
** Write a wiki artifact into the repository
*/
int wiki_put(Blob *pWiki, int parent, int needMod){
  int nrid;
  if( !needMod ){
    nrid = content_put_ex(pWiki, 0, 0, 0, 0);
    if( parent ) content_deltify(parent, &nrid, 1, 0);
  }else{
    nrid = content_put_ex(pWiki, 0, 0, 0, 1);
    moderation_table_create();
    db_multi_exec("INSERT INTO modreq(objid) VALUES(%d)", nrid);
  }
  db_add_unsent(nrid);
  db_multi_exec("INSERT OR IGNORE INTO unclustered VALUES(%d);", nrid);
  manifest_crosslink(nrid, pWiki, MC_NONE);
  if( login_is_individual() ){
    alert_user_contact(login_name());
  }
  return nrid;
}

/*
** Output a selection box from which the user can select the
** wiki mimetype.  Arguments:
**
**     zMimetype      -     The current value of the query parameter
**     zParam         -     The name of the query parameter
*/
void mimetype_option_menu(const char *zMimetype, const char *zParam){
  unsigned i;
  @ <select name="%s(zParam)" size="1">
  for(i=0; i<count(azStyles); i+=3){
    if( fossil_strcmp(zMimetype,azStyles[i])==0 ){
      @ <option value="%s(azStyles[i])" selected>%s(azStyles[i+1])</option>
    }else{
      @ <option value="%s(azStyles[i])">%s(azStyles[i+1])</option>
    }
  }
  @ </select>
}

/*
** Given a mimetype, return its common name.
*/
static const char *mimetype_common_name(const char *zMimetype){
  int i;
  for(i=6; i>=0; i-=3){
    if( zMimetype && fossil_strcmp(zMimetype, azStyles[i])==0 ){
      return azStyles[i+1];
    }
  }
  return azStyles[1];
}

/*
 ** Tries to fetch a wiki page for the given name. If found, it
 ** returns true, else false.
 **
 ** versionsBack specifies how many versions back in the history to
 ** fetch. Use 0 for the latest version, 1 for its parent, etc.
 **
 ** If pRid is not NULL then if a result is found *pRid is set to its
 ** RID. If ppWiki is not NULL then if found *ppWiki is set to the
 ** loaded wiki object, which the caller is responsible for passing to
 ** manifest_destroy().
 */
static int wiki_fetch_by_name( const char *zPageName,
                               unsigned int versionsBack,
                               int * pRid, Manifest **ppWiki ){
  Manifest *pWiki = 0;
  char *zTag = mprintf("wiki-%s", zPageName);
  Stmt q = empty_Stmt;
  int rid = 0;

  db_prepare(&q, "SELECT rid FROM tagxref"
             " WHERE tagid=(SELECT tagid FROM tag WHERE"
             "   tagname=%Q) "
             " ORDER BY mtime DESC LIMIT -1 OFFSET %u", zTag,
             versionsBack);
  fossil_free(zTag);
  if(SQLITE_ROW == db_step(&q)){
    rid = db_column_int(&q, 0);
  }
  db_finalize(&q);
  if( rid == 0 ){
    return 0;
  }
  else if(pRid){
    *pRid = rid;
  }
  if(ppWiki){
    pWiki = manifest_get(rid, CFTYPE_WIKI, 0);
    if( pWiki==0 ){
      /* "Cannot happen." */
      return 0;
    }
    *ppWiki = pWiki;
  }
  return 1;
}

/*
** Determines whether the wiki page with the given name can be edited
** or created by the current user. If not, an AJAX error is queued and
** false is returned, else true is returned. A NULL, empty, or
** malformed name is considered non-writable, regardless of the user.
**
** If pRid is not NULL then this function writes the page's rid to
** *pRid (whether or not access is granted). On error or if the page
** does not yet exist, *pRid will be set to 0.
**
** Note that the sandbox is a special case: it is a pseudo-page with
** no rid and the /wikiajax API does not allow anyone to actually save
** a sandbox page, but it is reported as writable here (with rid 0).
*/
static int wiki_ajax_can_write(const char *zPageName, int * pRid){
  int rid = 0;
  const char * zErr = 0;

  if(pRid) *pRid = 0;
  if(!zPageName || !*zPageName
     || !wiki_name_is_wellformed((unsigned const char *)zPageName)){
    zErr = "Invalid page name.";
  }else if(is_sandbox(zPageName)){
    return 1;
  }else{
    wiki_fetch_by_name(zPageName, 0, &rid, 0);
    if(pRid) *pRid = rid;
    if(!wiki_special_permission(zPageName)){
      zErr = "Editing this page requires non-wiki write permissions.";
    }else if( (rid && g.perm.WrWiki) || (!rid && g.perm.NewWiki) ){
      return 3;
    }else if(rid && !g.perm.WrWiki){
      zErr = "Requires wiki-write permissions.";
    }else if(!rid && !g.perm.NewWiki){
      zErr = "Requires new-wiki permissions.";
    }else{
      zErr = "Cannot happen! Please report this as a bug.";
    }
  }
  ajax_route_error(403, "%s", zErr);
  return 0;
}


/*
** Emits an array of attachment info records for the given wiki page
** artifact.
**
** Output format:
**
** [{
**   "uuid": attachment artifact hash,
**   "src": hash of the attachment blob,
**   "target": wiki page name or ticket/event ID,
**   "filename": filename of attachment,
**   "mtime": ISO-8601 timestamp UTC,
**   "isLatest": true this is the latest version of this file
**               else false,
** }, ...once per attachment]
**
** If there are no matching attachments then it will emit a JSON
** null (if nullIfEmpty) or an empty JSON array.
**
** If latestOnly is true then only the most recent entry for a given
** attachment is emitted, else all versions are emitted in descending
** mtime order.
*/
static void wiki_ajax_emit_page_attachments(Manifest * pWiki,
                                            int latestOnly,
                                            int nullIfEmpty){
  int i = 0;
  Stmt q = empty_Stmt;
  db_prepare(&q,
     "SELECT datetime(mtime), src, target, filename, isLatest,"
     "  (SELECT uuid FROM blob WHERE rid=attachid) uuid"
     "  FROM attachment"
     "  WHERE target=%Q"
     "  AND (isLatest OR %d)"
     "  ORDER BY target, isLatest DESC, mtime DESC",
     pWiki->zWikiTitle, !latestOnly
  );
  while(SQLITE_ROW == db_step(&q)){
    const char * zTime = db_column_text(&q, 0);
    const char * zSrc = db_column_text(&q, 1);
    const char * zTarget = db_column_text(&q, 2);
    const char * zName = db_column_text(&q, 3);
    const int isLatest = db_column_int(&q, 4);
    const char * zUuid = db_column_text(&q, 5);
    if(!i++){
      CX("[");
    }else{
      CX(",");
    }
    CX("{");
    CX("\"uuid\": %!j, \"src\": %!j, \"target\": %!j, "
       "\"filename\": %!j, \"mtime\": %!j, \"isLatest\": %s}",
       zUuid, zSrc, zTarget,
       zName, zTime, isLatest ? "true" : "false");
  }
  db_finalize(&q);
  if(!i){
    if(nullIfEmpty){
      CX("null");
    }else{
      CX("[]");
    }
  }else{
    CX("]");
  }
}
      login_verify_csrf_secret();
      zDate = db_text(0, "SELECT datetime('now')");
      zDate[10] = 'T';
      blob_appendf(&wiki, "D %s\n", zDate);
      free(zDate);
      blob_appendf(&wiki, "L %F\n", zPageName);
      if( rid ){
        char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
        blob_appendf(&wiki, "P %s\n", zUuid);
        free(zUuid);
      }

/*
** Proxy for wiki_ajax_emit_page_attachments() which attempts to load
** the given wiki page artifact. Returns true if it can load the given
** page, else false. If it returns false then it queues up a 404 ajax
** error response.
*/
static int wiki_ajax_emit_page_attachments2(const char *zPageName,
                                            int latestOnly,
                                            int nullIfEmpty){
  Manifest * pWiki = 0;
  if( !wiki_fetch_by_name(zPageName, 0, 0, &pWiki) ){
    ajax_route_error(404, "Wiki page could not be loaded: %s",
                     zPageName);
    return 0;
  }
  wiki_ajax_emit_page_attachments(pWiki, latestOnly, nullIfEmpty);
  manifest_destroy(pWiki);
  return 1;
}


/*
** Loads the given wiki page, sets the response type to
** application/json, and emits it as a JSON object.  If zPageName is a
** sandbox page then a "fake" object is emitted, as the wikiajax API
** does not permit saving the sandbox.
**
** Returns true on success, false on error, and on error it
** queues up a JSON-format error response.
**
** Output JSON format:
**
** { name: "page name",
**   type: "normal" | "tag" | "checkin" | "branch" | "sandbox",
**   mimetype: "mimetype",
**   version: UUID string or null for a sandbox page,
**   parent: "parent uuid" or null if no parent,
**   isDeleted: true if the page has no content (is "deleted")
**              else not set (making it "falsy" in JS),
**   attachments: see wiki_ajax_emit_page_attachments(),
**   content: "page content" (only if includeContent is true)
** }
**
** If includeContent is false then the content member is elided.
*/
static int wiki_ajax_emit_page_object(const char *zPageName,
                                      int includeContent){
  Manifest * pWiki = 0;
  char * zUuid;

  if( is_sandbox(zPageName) ){
    char * zMimetype =
      db_get("sandbox-mimetype","text/x-fossil-wiki");
    char * zBody = db_get("sandbox","");
    CX("{\"name\": %!j, \"type\": \"sandbox\", "
       "\"mimetype\": %!j, \"version\": null, \"parent\": null",
       zPageName, zMimetype);
    if(includeContent){
      CX(", \"content\": %!j",
       zBody);
    }
    CX("}");
    fossil_free(zMimetype);
    fossil_free(zBody);
    return 1;
  }else if( !wiki_fetch_by_name(zPageName, 0, 0, &pWiki) ){
    ajax_route_error(404, "Wiki page could not be loaded: %s",
                     zPageName);
    return 0;
  }else{
    zUuid = rid_to_uuid(pWiki->rid);
    CX("{\"name\": %!j, \"type\": %!j, "
       "\"version\": %!j, "
       "\"mimetype\": %!j, ",
       pWiki->zWikiTitle,
       wiki_page_type_name(pWiki->zWikiTitle),
       zUuid,
       pWiki->zMimetype ? pWiki->zMimetype : "text/x-fossil-wiki");
    CX("\"parent\": ");
    if(pWiki->nParent){
      CX("%!j", pWiki->azParent[0]);
    }else{
      CX("null");
    }
    if(!pWiki->zWiki || !pWiki->zWiki[0]){
      CX(", \"isEmpty\": true");
    }
    if(includeContent){
      CX(", \"content\": %!j", pWiki->zWiki);
    }
    CX(", \"attachments\": ");
    wiki_ajax_emit_page_attachments(pWiki, 0, 1);
    CX("}");
    fossil_free(zUuid);
    manifest_destroy(pWiki);
    return 2;
  }
      if( g.zLogin ){
        blob_appendf(&wiki, "U %F\n", g.zLogin);
      }
      blob_appendf(&wiki, "W %d\n%s\n", strlen(zBody), zBody);
      md5sum_blob(&wiki, &cksum);
      blob_appendf(&wiki, "Z %b\n", &cksum);
      blob_reset(&cksum);
      nrid = content_put(&wiki, 0, 0);
      db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
      manifest_crosslink(nrid, &wiki);
      blob_reset(&wiki);
      content_deltify(rid, nrid, 0);
}

/*
** Ajax route handler for /wikiajax/save.
**
** URL params:
**
**  page = the wiki page name.
**  mimetype = content mimetype.
**  content = page content. Fossil considers an empty page to
**            be "deleted".
**  isnew = 1 if the page is to be newly-created, else 0 or
**          not send.
**
** Responds with JSON. On error, an object in the form documented by
** ajax_route_error(). On success, an object in the form documented
** for wiki_ajax_emit_page_object().
**
** The wikiajax API disallows saving of a sandbox pseudo-page, and
** will respond with an error if asked to save one. Should we want to
** enable it, it's implemented like this for any saved page for which
** is_sandbox(zPageName) is true:
**
**  db_set("sandbox",zBody,0);
**  db_set("sandbox-mimetype",zMimetype,0);
**
*/
static void wiki_ajax_route_save(void){
  const char *zPageName = P("page");
  const char *zMimetype = P("mimetype");
  const char *zContent = P("content");
  const int isNew = ajax_p_bool("isnew");
  Blob content = empty_blob;
  int parentRid = 0;
  int rollback = 0;

  if(!wiki_ajax_can_write(zPageName, &parentRid)){
    return;
  }else if(is_sandbox(zPageName)){
    ajax_route_error(403,"Saving a sandbox page is prohibited.");
    return;
  }
  /* These isNew checks are just me being pedantic. We could just as
     easily derive isNew based on whether or not the page already
     exists. */
  if(isNew){
    if(parentRid>0){
      ajax_route_error(403,"Requested a new page, "
                       "but it already exists with RID %d: %s",
                       parentRid, zPageName);
      return;
    }
  }else if(parentRid==0){
    ajax_route_error(403,"Creating new page [%s] requires passing "
                     "isnew=1.", zPageName);
    return;
  }
  blob_init(&content, zContent ? zContent : "", -1);
  cgi_set_content_type("application/json");
  db_begin_transaction();
  wiki_cmd_commit(zPageName, parentRid, &content, zMimetype, 0);
  rollback = wiki_ajax_emit_page_object(zPageName, 1) ? 0 : 1;
  db_end_transaction(rollback);
}

/*
** Ajax route handler for /wikiajax/fetch.
**
** URL params:
**
**  page = the wiki page name
**
** Responds with JSON. On error, an object in the form documented by
** ajax_route_error(). On success, an object in the form documented
** for wiki_ajax_emit_page_object().
*/
static void wiki_ajax_route_fetch(void){
  const char * zPageName = P("page");

  if( zPageName==0 || zPageName[0]==0 ){
    ajax_route_error(400,"Missing page name.");
    return;
  }
  cgi_set_content_type("application/json");
  wiki_ajax_emit_page_object(zPageName, 1);
}

/*
** Ajax route handler for /wikiajax/attachments.
**
** URL params:
**
**  page = the wiki page name
**  latestOnly = if set, only latest version of each attachment
**               is emitted.
**
** Responds with JSON: see wiki_ajax_emit_page_attachments()
**
** If there are no attachments it emits an empty array instead of null
** so that the output can be used as a top-level JSON response.
**
** On error, an object in the form documented by
** ajax_route_error(). On success, an object in the form documented
** for wiki_ajax_emit_page_attachments().
*/
static void wiki_ajax_route_attachments(void){
  const char * zPageName = P("page");
  const int fLatestOnly = P("latestOnly")!=0;
  if( zPageName==0 || zPageName[0]==0 ){
    ajax_route_error(400,"Missing page name.");
    return;
  }
  cgi_set_content_type("application/json");
  wiki_ajax_emit_page_attachments2(zPageName, fLatestOnly, 0);
}

/*
** Ajax route handler for /wikiajax/diff.
**
** URL params:
**
**  page = the wiki page name
**  content = the new/edited wiki page content
**
** Requires that the user have write access solely to avoid some
** potential abuse cases. It does not actually write anything.
*/
static void wiki_ajax_route_diff(void){
  const char * zPageName = P("page");
  Blob contentNew = empty_blob, contentOrig = empty_blob;
  Manifest * pParent = 0;
  const char * zContent = P("content");
  u64 diffFlags = DIFF_HTML | DIFF_NOTTOOBIG | DIFF_STRIP_EOLCR;
  char * zParentUuid = 0;

  if( zPageName==0 || zPageName[0]==0 ){
    ajax_route_error(400,"Missing page name.");
    return;
  }else if(!wiki_ajax_can_write(zPageName, 0)){
    return;
  }
  switch(atoi(PD("sbs","0"))){
    case 0: diffFlags |= DIFF_LINENO; break;
    default: diffFlags |= DIFF_SIDEBYSIDE;
  }
  switch(atoi(PD("ws","2"))){
    case 1: diffFlags |= DIFF_IGNORE_EOLWS; break;
    case 2: diffFlags |= DIFF_IGNORE_ALLWS; break;
    default: break;
  }
  wiki_fetch_by_name( zPageName, 0, 0, &pParent );
  if( pParent ){
    zParentUuid = rid_to_uuid(pParent->rid);
  }
  if( pParent && pParent->zWiki && *pParent->zWiki ){
    blob_init(&contentOrig, pParent->zWiki, -1);
  }else{
    blob_init(&contentOrig, "", 0);
  }
  blob_init(&contentNew, zContent ? zContent : "", -1);
  cgi_set_content_type("text/html");
  ajax_render_diff(&contentOrig, zParentUuid, &contentNew, diffFlags);
  blob_reset(&contentNew);
  blob_reset(&contentOrig);
  fossil_free(zParentUuid);
  manifest_destroy(pParent);
}

/*
** Ajax route handler for /wikiajax/preview.
**
** URL params:
**
**  mimetype = the wiki page mimetype (determines rendering style)
**  content = the wiki page content
*/
static void wiki_ajax_route_preview(void){
  const char * zContent = P("content");

  if( zContent==0 ){
    ajax_route_error(400,"Missing content to preview.");
    return;
  }else{
    Blob content = empty_blob;
    const char * zMimetype = PD("mimetype","text/x-fossil-wiki");

    blob_init(&content, zContent, -1);
    cgi_set_content_type("text/html");
    wiki_render_by_mimetype(&content, zMimetype);
    blob_reset(&content);
  }
}

/*
** Outputs the wiki page list in JSON form. If verbose is false then
** it emits an array of strings (page names). If verbose is true it outputs
** an array of objects in this form:
**
** { name: string, version: string or null of sandbox box,
**   parent: uuid or null for first version or sandbox,
**   mimetype: string,
**   type: string (normal, branch, tag, check-in, or sandbox)
** }
**
** If includeContent is true, the object contains a "content" member
** with the raw page content. includeContent is ignored if verbose is
** false.
**
*/
static void wiki_render_page_list_json(int verbose, int includeContent){
  Stmt q = empty_Stmt;
  int n = 0;
  db_begin_transaction();
  db_prepare(&q, "SELECT"
             " substr(tagname,6) AS name"
             " FROM tag JOIN tagxref USING('tagid')"
             " WHERE tagname GLOB 'wiki-*'"
             " AND TYPEOF(tagxref.value+0)='integer'"
             /* ^^^ elide wiki- tags which are not wiki pages */
             " UNION SELECT 'Sandbox' AS name"
             " ORDER BY name COLLATE NOCASE");
  CX("[");
  while( SQLITE_ROW==db_step(&q) ){
    char const * zName = db_column_text(&q,0);
    if(n++){
      CX(",");
    }
    if(verbose==0){
      CX("%!j", zName);
    }else{
      wiki_ajax_emit_page_object(zName, includeContent);
    }
  }
  CX("]");
  db_finalize(&q);
    db_end_transaction(0);
    cgi_redirectf("wiki?name=%T", zPageName);
  }
  if( P("cancel")!=0 ){
    cgi_redirectf("wiki?name=%T", zPageName);
  db_end_transaction(0);
}

/*
** Ajax route handler for /wikiajax/list.
**
** Optional parameters: verbose, includeContent (see below).
**
** Responds with JSON. On error, an object in the form documented by
** ajax_route_error().
**
** On success, it emits an array of strings (page names) sorted
** case-insensitively. If the "verbose" parameter is passed in then
** the result list contains objects in the format documented for
** wiki_ajax_emit_page_object(). The content of each object is elided
** unless the "includeContent" parameter is passed on with a
** "non-false" value..
**
** The result list always contains an entry named "Sandbox" which
** represents the sandbox pseudo-page.
*/
static void wiki_ajax_route_list(void){
  const int verbose = ajax_p_bool("verbose");
  const int includeContent = ajax_p_bool("includeContent");

  cgi_set_content_type("application/json");
  wiki_render_page_list_json(verbose, includeContent);
}

/*
** WEBPAGE: wikiajax hidden
**
** An internal dispatcher for wiki AJAX operations. Not for direct
** client use. All routes defined by this interface are app-internal,
** subject to change
*/
void wiki_ajax_page(void){
  const char * zName = P("name");
  AjaxRoute routeName = {0,0,0,0};
  const AjaxRoute * pRoute = 0;
  const AjaxRoute routes[] = {
  /* Keep these sorted by zName (for bsearch()) */
  {"attachments", wiki_ajax_route_attachments, 0, 0},
  {"diff", wiki_ajax_route_diff, 1, 1},
  {"fetch", wiki_ajax_route_fetch, 0, 0},
  {"list", wiki_ajax_route_list, 0, 0},
  {"preview", wiki_ajax_route_preview, 0, 1},
  {"save", wiki_ajax_route_save, 1, 1}
  };

  if(zName==0 || zName[0]==0){
    ajax_route_error(400,"Missing required [route] 'name' parameter.");
    return;
  }
  routeName.zName = zName;
  pRoute = (const AjaxRoute *)bsearch(&routeName, routes,
                                      count(routes), sizeof routes[0],
                                      cmp_ajax_route_name);
  if( zBody==0 ){
    zBody = mprintf("<i>Empty Page</i>");
  if(pRoute==0){
    ajax_route_error(404,"Ajax route not found.");
    return;
  }
  zHtmlPageName = mprintf("Edit: %s", zPageName);
  style_header(zHtmlPageName);
  if( P("preview")!=0 ){
    blob_zero(&wiki);
    blob_append(&wiki, zBody, -1);
    @ Preview:<hr>
    wiki_convert(&wiki, 0, 0);
    @ <hr>
    blob_reset(&wiki);
  login_check_credentials();
  if( pRoute->bWriteMode!=0 && g.perm.WrWiki==0 ){
    ajax_route_error(403,"Write permissions required.");
    return;
  }else if( pRoute->bWriteMode==0 && g.perm.RdWiki==0 ){
    ajax_route_error(403,"Read-Wiki permissions required.");
    return;
  }else if(0==cgi_csrf_safe(pRoute->bPost)){
    ajax_route_error(403,
                     "CSRF violation (make sure sending of HTTP "
                     "Referer headers is enabled for XHR "
                     "connections).");
    return;
  }
  pRoute->xCallback();
}

/*
** Emits a preview-toggle option widget for /wikiedit and /fileedit.
*/
void wikiedit_emit_toggle_preview(void){
  CX("<div class='input-with-label'>"
     "<input type='checkbox' id='edit-shift-enter-preview' "
     "></input><label for='edit-shift-enter-preview'>"
     "Shift-enter previews</label>"
     "<div class='help-buttonlet'>"
     "When enabled, shift-enter switches between preview and edit modes. "
     "Some software-based keyboards misinteract with this, so it can be "
     "disabled when needed."
     "</div>"
     "</div>");
}

/*
** WEBPAGE: wikiedit
** URL: /wikedit?name=PAGENAME
**
** The main front-end for the Ajax-based wiki editor app. Passing
** in the name of an unknown page will trigger the creation
** of a new page (which is not actually created in the database
** until the user explicitly saves it). If passed no page name,
** the user may select a page from the list on the first UI tab.
**
** When creating a new page, the mimetype URL parameter may optionally
** be used to set its mimetype to one of text/x-fossil-wiki,
** text/x-markdown, or text/plain, defaulting to the former.
*/
void wikiedit_page(void){
  const char *zPageName;
  const char * zMimetype = P("mimetype");
  int isSandbox;
  int found = 0;

  login_check_credentials();
  zPageName = PD("name","");
  if(zPageName && *zPageName){
    if( check_name(zPageName) ) return;
  }
  isSandbox = is_sandbox(zPageName);
  if( isSandbox ){
    if( !g.perm.RdWiki ){
      login_needed(g.anon.RdWiki);
      return;
    }
    found = 1;
  }else if( zPageName!=0 && zPageName[0]!=0){
    int rid = 0;
    if( !wiki_special_permission(zPageName) ){
      login_needed(0);
      return;
    }
    found = wiki_fetch_by_name(zPageName, 0, &rid, 0);
    if( (rid && !g.perm.RdWiki) || (!rid && !g.perm.NewWiki) ){
      login_needed(rid ? g.anon.RdWiki : g.anon.NewWiki);
      return;
    }
  }else{
    if( !g.perm.RdWiki ){
      login_needed(g.anon.RdWiki);
      return;
    }
  }
  style_set_current_feature("wiki");
  style_header("Wiki Editor");
  style_emit_noscript_for_js_page();
  for(n=2, z=zBody; z[0]; z++){
    if( z[0]=='\n' ) n++;
  }
  if( n<20 ) n = 20;
  if( n>40 ) n = 40;
  @ <form method="POST" action="%s(g.zBaseURL)/wikiedit">
  login_insert_csrf_secret();
  @ <input type="hidden" name="name" value="%h(zPageName)">
  @ <textarea name="w" class="wikiedit" cols="80" 
  @  rows="%d(n)" wrap="virtual">%h(zBody)</textarea>
  @ <br>
  @ <input type="submit" name="preview" value="Preview Your Changes">
  @ <input type="submit" name="submit" value="Apply These Changes">
  @ <input type="submit" name="cancel" value="Cancel">
  @ </form>
  if( !isSandbox ){
    manifest_clear(&m);

  /* Status bar */
  CX("<div id='fossil-status-bar' "
     "title='Status message area. Double-click to clear them.'>"
     "Status messages will go here.</div>\n"
     /* will be moved into the tab container via JS */);

  CX("<div id='wikiedit-edit-status''>"
     "<span class='name'></span>"
     "<span class='links'></span>"
     "</div>");

  /* Main tab container... */
  CX("<div id='wikiedit-tabs' class='tab-container'>Loading...</div>");
  /* The .hidden class on the following tab elements is to help lessen
     the FOUC effect of the tabs before JS re-assembles them. */

  /******* Page list *******/
  {
    CX("<div id='wikiedit-tab-pages' "
       "data-tab-parent='wikiedit-tabs' "
       "data-tab-label='Wiki Page List' "
       "class='hidden'"
       ">");
    CX("<div>Loading wiki pages list...</div>");
    CX("</div>"/*#wikiedit-tab-pages*/);
  }

  /******* Content tab *******/
  {
    CX("<div id='wikiedit-tab-content' "
       "data-tab-parent='wikiedit-tabs' "
       "data-tab-label='Editor' "
       "class='hidden'"
       ">");
    CX("<div class='"
       "wikiedit-options flex-container flex-row child-gap-small'>");
    CX("<div class='input-with-label'>"
       "<label>Mime type</label>");
    mimetype_option_menu("text/x-markdown", "mimetype");
    CX("</div>");
    style_select_list_int("select-font-size",
                          "editor_font_size", "Editor font size",
                          NULL/*tooltip*/,
                          100,
                          "100%", 100, "125%", 125,
                          "150%", 150, "175%", 175,
                          "200%", 200, NULL);
    CX("<div class='input-with-label'>"
       /*will get moved around dynamically*/
       "<button class='wikiedit-save'>"
       "Save</button>"
       "<button class='wikiedit-save-close'>"
       "Save &amp; Close</button>"
       "<div class='help-buttonlet'>"
       "Save edits to this page and optionally return "
       "to the wiki page viewer."
       "</div>"
       "</div>" /*will get moved around dynamically*/);
    CX("<span class='save-button-slot'></span>");

    CX("<div class='input-with-label'>"
       "<button class='wikiedit-content-reload' "
       ">Discard &amp; Reload</button>"
       "<div class='help-buttonlet'>"
       "Reload the file from the server, discarding "
       "any local edits. To help avoid accidental loss of "
       "edits, it requires confirmation (a second click) within "
       "a few seconds or it will not reload."
       "</div>"
       "</div>");
    wikiedit_emit_toggle_preview();
    CX("</div>");
    CX("<div class='flex-container flex-column stretch'>");
    CX("<textarea name='content' id='wikiedit-content-editor' "
       "class='wikiedit' rows='25'>");
    CX("</textarea>");
    CX("</div>"/*textarea wrapper*/);
    CX("</div>"/*#tab-file-content*/);
  }
  /****** Preview tab ******/
  {
    CX("<div id='wikiedit-tab-preview' "
       "data-tab-parent='wikiedit-tabs' "
       "data-tab-label='Preview' "
       "class='hidden'"
       ">");
    CX("<div class='wikiedit-options flex-container "
       "flex-row child-gap-small'>");
    CX("<button id='btn-preview-refresh' "
       "data-f-preview-from='wikiContent' "
       /* ^^^ fossil.page[methodName]() OR text source elem ID,
      ** but we need a method in order to support clients swapping out
      ** the text editor with their own. */
       "data-f-preview-via='_postPreview' "
       /* ^^^ fossil.page[methodName](content, callback) */
       "data-f-preview-to='_previewTo' "
       /* ^^^ dest elem ID or fossil.page[methodName]*/
       ">Refresh</button>");
    /* Toggle auto-update of preview when the Preview tab is selected. */
    CX("<div class='input-with-label'>"
       "<input type='checkbox' value='1' "
       "id='cb-preview-autorefresh' checked>"
       "<label for='cb-preview-autorefresh'>Auto-refresh?</label>"
       "</div>");
    CX("<span class='save-button-slot'></span>");
    CX("</div>"/*.wikiedit-options*/);
    CX("<div id='wikiedit-tab-preview-wrapper'></div>");
    CX("</div>"/*#wikiedit-tab-preview*/);
  }

  /****** Diff tab ******/
  {
    CX("<div id='wikiedit-tab-diff' "
       "data-tab-parent='wikiedit-tabs' "
       "data-tab-label='Diff' "
       "class='hidden'"
       ">");

    CX("<div class='wikiedit-options flex-container "
       "flex-row child-gap-small' "
       "id='wikiedit-tab-diff-buttons'>");
    CX("<div class='input-with-label'>"
       "<button class='sbs'>Side-by-side</button>"
       "<button class='unified'>Unified</button>"
       "</div>");
    CX("<span class='save-button-slot'></span>");
    CX("</div>");
    CX("<div id='wikiedit-tab-diff-wrapper'>"
       "Diffs will be shown here."
       "</div>");
    CX("</div>"/*#wikiedit-tab-diff*/);
  }

  /****** The obligatory "Misc" tab ******/
  {
    CX("<div id='wikiedit-tab-misc' "
       "data-tab-parent='wikiedit-tabs' "
       "data-tab-label='Misc.' "
       "class='hidden'"
       ">");
    CX("<fieldset id='attachment-wrapper'>");
    CX("<legend>Attachments</legend>");
    CX("<div>No attachments for the current page.</div>");
    CX("</fieldset>");
    CX("<h2>Wiki formatting rules</h2>");
    CX("<ul>");
    CX("<li><a href='%R/wiki_rules'>Fossil wiki format</a></li>");
    CX("<li><a href='%R/md_rules'>Markdown format</a></li>");
    CX("<li>Plain-text pages use no special formatting.</li>");
    CX("</ul>");
    CX("<h2>The \"Sandbox\" Page</h2>");
    CX("<p>The page named \"Sandbox\" is not a real wiki page. "
       "It provides a place where users may test out wiki syntax "
       "without having to actually save anything, nor pollute "
       "the repo with endless test runs. Any attempt to save the "
       "sandbox page will fail.</p>");
    CX("<h2>Wiki Name Rules</h2>");
    well_formed_wiki_name_rules();
    CX("</div>"/*#wikiedit-tab-save*/);
  }
  builtin_fossil_js_bundle_or("fetch", "dom", "tabs", "confirmer",
                              "storage", "popupwidget", "copybutton",
                              "pikchr", NULL);
  builtin_fossil_js_bundle_or("diff", NULL);
  builtin_request_js("fossil.page.wikiedit.js");
  builtin_fulfill_js_requests();
  /* Dynamically populate the editor... */
  style_script_begin(__FILE__,__LINE__);
  {
    /* Render the current page list to save us an XHR request
       during page initialization. This must be OUTSIDE of
       an onPageLoad() handler or else it does not get applied
       until after the wiki list widget is initialized. Similarly,
       it must come *after* window.fossil is initialized. */
    CX("\nfossil.page.initialPageList = ");
    wiki_render_page_list_json(1, 0);
    CX(";\n");
  }
  CX("fossil.onPageLoad(function(){\n");
  CX("const P = fossil.page;\n"
     "try{\n");
  if(!found && zPageName && *zPageName){
    /* For a new page, stick a dummy entry in the JS-side stash
       and "load" it from there. */
    CX("const winfo = {"
       "\"name\": %!j, \"mimetype\": %!j, "
       "\"type\": %!j, "
       "\"parent\": null, \"version\": null"
       "};\n",
       zPageName,
       zMimetype ? zMimetype : "text/x-fossil-wiki",
       wiki_page_type_name(zPageName));
    /* If the JS-side stash already has this page, load that
       copy from the stash, otherwise inject a new stash entry
       for it and load *that* one... */
    CX("if(!P.$stash.getWinfo(winfo)){"
       "P.$stash.updateWinfo(winfo,'');"
       "}\n");
  }
  if(zPageName && *zPageName){
    CX("P.loadPage(%!j);\n", zPageName);
  }
  CX("}catch(e){"
     "fossil.error(e); console.error('Exception:',e);"
     "}\n");
  CX("});\n"/*fossil.onPageLoad()*/);
  style_script_end();
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: wikinew
** URL /wikinew
**
** Prompt the user to enter the name of a new wiki page.  Then redirect
** to the wikiedit screen for that new page.
*/
void wikinew_page(void){
  const char *zName;
  const char *zMimetype;
  login_check_credentials();
  if( !g.okNewWiki ){
    login_needed();
  if( !g.perm.NewWiki ){
    login_needed(g.anon.NewWiki);
    return;
  }  
  }
  zName = PD("name","");
  zMimetype = wiki_filter_mimetypes(P("mimetype"));
  if( zName[0] && wiki_name_is_wellformed((const unsigned char *)zName) ){
    cgi_redirectf("wikiedit?name=%T", zName);
    cgi_redirectf("wikiedit?name=%T&mimetype=%s", zName, zMimetype);
  }
  style_set_current_feature("wiki");
  style_header("Create A New Wiki Page");
  wiki_standard_submenu(W_ALL_BUT(W_NEW));
  @ <p>Rules for wiki page names:
  @ <p>Rules for wiki page names:</p>
  well_formed_wiki_name_rules();
  @ </p>
  @ <form method="POST" action="%s(g.zBaseURL)/wikinew">
  form_begin(0, "%R/wikinew");
  @ <p>Name of new wiki page:
  @ <input type="text" width="35" name="name" value="%h(zName)">
  @ <input type="submit" value="Create">
  @ <input style="width: 35;" type="text" name="name" value="%h(zName)"><br>
  @ %z(href("%R/markup_help"))Markup style</a>:
  mimetype_option_menu("text/x-markdown", "mimetype");
  @ <br><input type="submit" value="Create">
  @ </p></form>
  if( zName[0] ){
    @ <p><b><font color="red">
    @ "%h(zName)" is not a valid wiki page name!</font></b></p>
    @ <p><span class="wikiError">
    @ "%h(zName)" is not a valid wiki page name!</span></p>
  }
  style_footer();
  style_finish_page();
}


/*
** Append the wiki text for an remark to the end of the given BLOB.
*/
static void appendRemark(Blob *p){
static void appendRemark(Blob *p, const char *zMimetype){
  char *zDate;
  const char *zUser;
  const char *zRemark;
  char *zId;

  zDate = db_text(0, "SELECT datetime('now')");
  zRemark = PD("r","");
  zUser = PD("u",g.zLogin);
  if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
  zId = db_text(0, "SELECT lower(hex(randomblob(8)))");
  blob_appendf(p, "\n\n<hr><div id=\"%s\"><i>On %s UTC %h", 
    zId, zDate, g.zLogin);
    zId = db_text(0, "SELECT lower(hex(randomblob(8)))");
    blob_appendf(p, "\n\n<hr><div id=\"%s\"><i>On %s UTC %h",
      zId, zDate, login_name());
  free(zDate);
  zUser = PD("u",g.zLogin);
  if( zUser[0] && strcmp(zUser,g.zLogin) ){
    blob_appendf(p, " (claiming to be %h)", zUser);
  }
  zRemark = PD("r","");
  blob_appendf(p, " added:</i><br />\n%s</div id=\"%s\">", zRemark, zId);
    if( zUser[0] && fossil_strcmp(zUser,login_name()) ){
      blob_appendf(p, " (claiming to be %h)", zUser);
    }
    blob_appendf(p, " added:</i><br>\n%s</div id=\"%s\">", zRemark, zId);
  }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
    blob_appendf(p, "\n\n------\n*On %s UTC %h", zDate, login_name());
    if( zUser[0] && fossil_strcmp(zUser,login_name()) ){
      blob_appendf(p, " (claiming to be %h)", zUser);
    }
    blob_appendf(p, " added:*\n\n%s\n", zRemark);
  }else{
    blob_appendf(p, "\n\n------------------------------------------------\n"
                    "On %s UTC %s", zDate, login_name());
    if( zUser[0] && fossil_strcmp(zUser,login_name()) ){
      blob_appendf(p, " (claiming to be %s)", zUser);
    }
    blob_appendf(p, " added:\n\n%s\n", zRemark);
  }
  fossil_free(zDate);
}

/*
** WEBPAGE: wikiappend
** URL: /wikiappend?name=PAGENAME
** URL: /wikiappend?name=PAGENAME&mimetype=MIMETYPE
**
** Append text to the end of a wiki page.
*/
void wikiappend_page(void){
  char *zTag;
  int rid = 0;
  int isSandbox;
  const char *zPageName;
  char *zHtmlPageName;
  const char *zUser;
  const char *zUser;
  const char *zMimetype;
  int goodCaptcha = 1;
  const char *zFormat;
  Manifest *pWiki = 0;
  int isSandbox;

  login_check_credentials();
  if( !g.perm.ApndWiki ){
    login_needed(g.anon.ApndWiki);
    return;
  }
  zPageName = PD("name","");
  zMimetype = wiki_filter_mimetypes(P("mimetype"));
  if( check_name(zPageName) ) return;
  isSandbox = is_sandbox(zPageName);
  if( !isSandbox ){
  if(!isSandbox){
    zTag = mprintf("wiki-%s", zPageName);
    rid = db_int(0, 
    rid = db_int(0,
      "SELECT rid FROM tagxref"
      " WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
      " ORDER BY mtime DESC", zTag
    );
    free(zTag);
    pWiki = rid ? manifest_get(rid, CFTYPE_WIKI, 0) : 0;
    if( !rid ){
    if( !pWiki ){
      fossil_redirect_home();
      return;
    }
  }
  if( !g.okApndWiki ){
    zMimetype = wiki_filter_mimetypes(pWiki->zMimetype)
    login_needed();
    return;
      /* see https://fossil-scm.org/forum/forumpost/0acfdaac80 */;
  }
  if( P("submit")!=0 && P("r")!=0 && P("u")!=0 ){
  if( !isSandbox && P("submit")!=0 && P("r")!=0 && P("u")!=0
   && (goodCaptcha = captcha_is_correct(0))
   && cgi_csrf_safe(2)
  ){
    char *zDate;
    Blob cksum;
    int nrid;
    Blob body;
    Blob content;
    Blob wiki;
    Manifest m;

    blob_zero(&body);
    if( isSandbox ){
      blob_appendf(&body, db_get("sandbox",""));
      appendRemark(&body);
      db_set("sandbox", blob_str(&body), 0);
    }else{
      login_verify_csrf_secret();
      content_get(rid, &content);
      manifest_parse(&m, &content);
      if( m.type==CFTYPE_WIKI ){
        blob_append(&body, m.zWiki, -1);
    blob_append(&body, pWiki->zWiki, -1);
      }
      manifest_clear(&m);
      blob_zero(&wiki);
      db_begin_transaction();
      zDate = db_text(0, "SELECT datetime('now')");
    blob_zero(&wiki);
    db_begin_transaction();
    zDate = date_in_standard_format("now");
      zDate[10] = 'T';
      blob_appendf(&wiki, "D %s\n", zDate);
      blob_appendf(&wiki, "L %F\n", zPageName);
      if( rid ){
        char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
        blob_appendf(&wiki, "P %s\n", zUuid);
        free(zUuid);
      }
      if( g.zLogin ){
        blob_appendf(&wiki, "U %F\n", g.zLogin);
      }
      appendRemark(&body);
      blob_appendf(&wiki, "W %d\n%s\n", blob_size(&body), blob_str(&body));
      md5sum_blob(&wiki, &cksum);
      blob_appendf(&wiki, "Z %b\n", &cksum);
      blob_reset(&cksum);
      nrid = content_put(&wiki, 0, 0);
    blob_appendf(&wiki, "D %s\n", zDate);
    blob_appendf(&wiki, "L %F\n", zPageName);
    if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")!=0 ){
      blob_appendf(&wiki, "N %s\n", zMimetype);
    }
    if( rid ){
      char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
      blob_appendf(&wiki, "P %s\n", zUuid);
      free(zUuid);
    }
    if( !login_is_nobody() ){
      blob_appendf(&wiki, "U %F\n", login_name());
    }
    appendRemark(&body, zMimetype);
    blob_appendf(&wiki, "W %d\n%s\n", blob_size(&body), blob_str(&body));
    md5sum_blob(&wiki, &cksum);
    blob_appendf(&wiki, "Z %b\n", &cksum);
    blob_reset(&cksum);
    wiki_put(&wiki, rid, wiki_need_moderation(0));
      db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
      manifest_crosslink(nrid, &wiki);
      blob_reset(&wiki);
      content_deltify(rid, nrid, 0);
      db_end_transaction(0);
    db_end_transaction(0);
    }
    manifest_destroy(pWiki);
    cgi_redirectf("wiki?name=%T", zPageName);
    return;
  }
  if( P("cancel")!=0 ){
  if( !isSandbox && P("cancel")!=0 ){
    manifest_destroy(pWiki);
    cgi_redirectf("wiki?name=%T", zPageName);
    return;
  }
  style_set_current_page("%T?name=%T", g.zPath, zPageName);
  style_set_current_feature("wiki");
  zHtmlPageName = mprintf("Append Comment To: %s", zPageName);
  style_header(zHtmlPageName);
  if( P("preview")!=0 ){
  style_header("Append Comment To: %s", zPageName);
  if( !goodCaptcha ){
    @ <p class="generalError">Error: Incorrect security code.</p>
  }
  if( isSandbox ){
    @ <p class="generalError">Error: the Sandbox page may not
    @ be appended to.</p>
  }
  if( !isSandbox && P("preview")!=0 ){
    Blob preview;
    blob_zero(&preview);
    appendRemark(&preview);
    appendRemark(&preview, zMimetype);
    @ Preview:<hr>
    safe_html_context(DOCSRC_WIKI);
    wiki_convert(&preview, 0, 0);
    wiki_render_by_mimetype(&preview, zMimetype);
    @ <hr>
    blob_reset(&preview);
  }
  zUser = PD("u", g.zLogin);
  @ <form method="POST" action="%s(g.zBaseURL)/wikiappend">
  form_begin(0, "%R/wikiappend");
  login_insert_csrf_secret();
  @ <input type="hidden" name="name" value="%h(zPageName)">
  @ <input type="hidden" name="mimetype" value="%h(zMimetype)">
  @ Your Name:
  @ <input type="text" name="u" size="20" value="%h(zUser)"><br>
  zFormat = mimetype_common_name(zMimetype);
  @ Comment to append:<br>
  @ <textarea name="r" class="wikiedit" cols="80" 
  @ Comment to append (formatted as %s(zFormat)):<br>
  @ <textarea name="r" class="wikiedit" cols="80"
  @  rows="10" wrap="virtual">%h(PD("r",""))</textarea>
  @ <br>
  @ <input type="submit" name="preview" value="Preview Your Comment">
  @ <input type="submit" name="submit" value="Append Your Changes">
  @ <input type="submit" name="cancel" value="Cancel">
  captcha_generate(0);
  @ </form>
  style_footer();
}

  manifest_destroy(pWiki);
/*
** Name of the wiki history page being generated
*/
static const char *zWikiPageName;

  style_finish_page();
/*
** Function called to output extra text at the end of each line in
** a wiki history listing.
*/
static void wiki_history_extra(int rid){
  if( db_exists("SELECT 1 FROM tagxref WHERE rid=%d", rid) ){
    @ <a href="%s(g.zTop)/wdiff?name=%t(zWikiPageName)&a=%d(rid)">[diff]</a>
  }
}

/*
** WEBPAGE: whistory
** URL: /whistory?name=PAGENAME
**
** Additional parameters:
**
**     showid          Show RID values
**
** Show the complete change history for a single wiki page.
*/
void whistory_page(void){
  Stmt q;
  char *zTitle;
  char *zSQL;
  const char *zPageName;
  double rNow;
  int showRid;
  char zAuthor[64];
  login_check_credentials();
  if( !g.okHistory ){ login_needed(); return; }
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  zPageName = PD("name","");
  style_set_current_feature("wiki");
  zTitle = mprintf("History Of %s", zPageName);
  style_header("History Of %s", zPageName);
  style_header(zTitle);
  free(zTitle);

  zSQL = mprintf("%s AND event.objid IN "
                 "  (SELECT rid FROM tagxref WHERE tagid="
                       "(SELECT tagid FROM tag WHERE tagname='wiki-%q')"
  showRid = P("showid")!=0;
  db_prepare(&q,
    "SELECT"
    "  event.mtime,"
    "  blob.uuid,"
    "  coalesce(event.euser,event.user),"
    "  event.objid,"
    "  datetime(event.mtime)"
    " FROM event, blob, tag, tagxref"
    " WHERE event.type='w' AND blob.rid=event.objid"
    "   AND tag.tagname='wiki-%q'"
                 "   UNION SELECT attachid FROM attachment"
                          " WHERE target=%Q)"
                 "ORDER BY mtime DESC",
                 timeline_query_for_www(), zPageName, zPageName);
    "   AND tagxref.tagid=tag.tagid AND tagxref.srcid=event.objid"
    " ORDER BY event.mtime DESC",
    zPageName
  db_prepare(&q, zSQL);
  free(zSQL);
  zWikiPageName = zPageName;
  www_print_timeline(&q, TIMELINE_ARTID, wiki_history_extra);
  );
  @ <h2>History of <a href="%R/wiki?name=%T(zPageName)">%h(zPageName)</a></h2>
  form_begin( "id='wh-form'", "%R/wdiff" );
  @   <input id="wh-pid" name="pid" type="radio" hidden>
  @   <input id="wh-id"  name="id"  type="hidden">
  @ </form>
  @ <style> .wh-clickable { cursor: pointer; } </style>
  @ <div class="brlist">
  @ <table>
  @ <thead><tr>
  @ <th>Age</th>
  @ <th>Hash</th>
  @ <th><span title="Baseline from which diffs are computed (click to unset)"
  @      id="wh-cleaner" class="wh-clickable">&#9875;</span></th>
  @ <th>User<span hidden class="wh-clickable"
  @                   id="wh-collapser">&emsp;&#9842;</span></th>
  if( showRid ){
    @ <th>RID</th>
  }
  @ <th>&nbsp;</th>
  @ </tr></thead><tbody>
  rNow = db_double(0.0, "SELECT julianday('now')");
  memset( zAuthor, 0, sizeof(zAuthor) );
  while( db_step(&q)==SQLITE_ROW ){
    double rMtime = db_column_double(&q, 0);
    const char *zUuid = db_column_text(&q, 1);
    const char *zUser = db_column_text(&q, 2);
    int wrid = db_column_int(&q, 3);
    const char *zWhen = db_column_text(&q, 4);
    /* sqlite3_int64 iMtime = (sqlite3_int64)(rMtime*86400.0); */
    char *zAge = human_readable_age(rNow - rMtime);
    if( strncmp( zAuthor, zUser, sizeof(zAuthor) - 1 ) == 0 ) {
      @ <tr class="wh-intermediate" title="%s(zWhen)">
    }
    else {
      strncpy( zAuthor, zUser, sizeof(zAuthor) - 1 );
      @ <tr class="wh-major" title="%s(zWhen)">
    }
    /* @ <td data-sortkey="%016llx(iMtime)">%s(zAge)</td> */
    @ <td>%s(zAge)</td>
    fossil_free(zAge);
    @ <td>%z(href("%R/info/%s",zUuid))%S(zUuid)</a></td>
    @ <td><input disabled type="radio" name="baseline" value="%S(zUuid)"/></td>
    @ <td>%h(zUser)<span class="wh-iterations" hidden></td>
    if( showRid ){
      @ <td>%z(href("%R/artifact/%S",zUuid))%d(wrid)</a></td>
    }
    @ <td>%z(chref("wh-difflink","%R/wdiff?id=%S",zUuid))diff</a></td>
    @ </tr>
  }
  @ </tbody></table></div>
  db_finalize(&q);
  builtin_request_js("fossil.page.whistory.js");
  /* style_table_sorter(); */
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: wdiff
** URL: /whistory?name=PAGENAME&a=RID1&b=RID2
**
** Show the difference between two wiki pages.
** Show the changes to a wiki page.
**
** Query parameters:
**
**      id=HASH           Hash prefix for the child version to be diffed.
**      rid=INTEGER       RecordID for the child version
**      pid=HASH          Hash prefix for the parent.
**
** The "id" query parameter is required.  "pid" is optional.  If "pid"
** is omitted, then the diff is against the first parent of the child.
*/
void wdiff_page(void){
  char *zTitle;
  const char *zId;
  int rid1, rid2;
  const char *zPageName;
  Blob content1, content2;
  Manifest m1, m2;
  const char *zIdFull;
  const char *zPid;
  Manifest *pW1, *pW2 = 0;
  int rid1, rid2, nextRid;
  Blob w1, w2, d;
  DiffConfig DCfg;

  login_check_credentials();
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  zId = P("id");
  if( zId==0 ){
  rid1 = atoi(PD("a","0"));
  if( !g.okHistory ){ login_needed(); return; }
  if( rid1==0 ) fossil_redirect_home();
    rid1 = atoi(PD("rid","0"));
  }else{
    rid1 = name_to_typed_rid(zId, "w");
  }
  zIdFull = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid1);
  if( zIdFull==0 ){
    if( zId ){
      webpage_notfound_error("No such wiki page: \"%s\"", zId);
    }else{
      webpage_notfound_error("No such wiki page: %d", rid1);
    }
    return;
  }
  zId = zIdFull;
  pW1 = manifest_get(rid1, CFTYPE_WIKI, 0);
  if( pW1==0 ) fossil_redirect_home();
  rid2 = atoi(PD("b","0"));
  zPageName = PD("name","");
  blob_init(&w1, pW1->zWiki, -1);
  zPid = P("pid");
  zTitle = mprintf("Changes To %s", zPageName);
  style_header(zTitle);
  free(zTitle);

  if( rid2==0 ){
    rid2 = db_int(0,
  if( ( zPid==0 || zPid[0] == 0 ) && pW1->nParent ){
    zPid = pW1->azParent[0];
  }
  cgi_check_for_malice();
  if( zPid && zPid[0] != 0 ){
    char *zDate;
    rid2 = name_to_typed_rid(zPid, "w");
      "SELECT objid FROM event JOIN tagxref ON objid=rid AND tagxref.tagid="
                        "(SELECT tagid FROM tag WHERE tagname='wiki-%q')"
      " WHERE event.mtime<(SELECT mtime FROM event WHERE objid=%d)"
      " ORDER BY event.mtime DESC LIMIT 1",
      zPageName, rid1
    );
  }
  content_get(rid1, &content1);
    pW2 = manifest_get(rid2, CFTYPE_WIKI, 0);
  manifest_parse(&m1, &content1);
  if( m1.type!=CFTYPE_WIKI ) fossil_redirect_home();
  blob_init(&w1, m1.zWiki, -1);
  blob_zero(&w2);
  if( rid2 ){
    content_get(rid2, &content2);
    manifest_parse(&m2, &content2);
    blob_init(&w2, pW2->zWiki, -1);
    @ <h2>Changes to \
    @ "%z(href("%R/whistory?name=%s",pW1->zWikiTitle))%h(pW1->zWikiTitle)</a>" \
    zDate = db_text(0, "SELECT datetime(%.16g,toLocal())",pW2->rDate);
    @ between %z(href("%R/info/%s",zPid))%z(zDate)</a> \
    zDate = db_text(0, "SELECT datetime(%.16g,toLocal())",pW1->rDate);
    @ and %z(href("%R/info/%s",zId))%z(zDate)</a></h2>
    style_submenu_element("Previous", "%R/wdiff?id=%S", zPid);
  }else{
    blob_zero(&w2);
    @ <h2>Initial version of \
    @ "%z(href("%R/whistory?name=%s",pW1->zWikiTitle))%h(pW1->zWikiTitle)</a>"\
    @ </h2>
    if( m2.type==CFTYPE_WIKI ){
      blob_init(&w2, m2.zWiki, -1);
    }
  }
  nextRid = wiki_next(wiki_tagid(pW1->zWikiTitle),pW1->rDate);
  if( nextRid ){
    style_submenu_element("Next", "%R/wdiff?rid=%d", nextRid);
  }
  style_set_current_feature("wiki");
  style_header("Changes To %s", pW1->zWikiTitle);
  blob_zero(&d);
  construct_diff_flags(1, &DCfg);
  DCfg.diffFlags |= DIFF_HTML | DIFF_LINENO;
  text_diff(&w2, &w1, &d, 5);
  text_diff(&w2, &w1, &d, &DCfg);
  @ <pre>
  @ %h(blob_str(&d))
  @ %s(blob_str(&d))
  @ </pre>
  style_footer();
  manifest_destroy(pW1);
  manifest_destroy(pW2);
  style_finish_page();
}

/*
** A query that returns information about all wiki pages.
**
**    wname         Name of the wiki page
**    wsort         Sort names by this label
**    wrid          rid of the most recent version of the page
**    wmtime        time most recent version was created
**    wcnt          Number of versions of this wiki page
**
** The wrid value is zero for deleted wiki pages.
*/
static const char listAllWikiPages[] =
@ SELECT
@   substr(tag.tagname, 6) AS wname,
@   lower(substr(tag.tagname, 6)) AS sortname,
@   tagxref.value+0 AS wrid,
@   max(tagxref.mtime) AS wmtime,
@   count(*) AS wcnt
@ FROM
@   tag,
@   tagxref
@ WHERE
@   tag.tagname GLOB 'wiki-*'
@   AND tagxref.tagid=tag.tagid
@   AND TYPEOF(wrid)='integer' -- only wiki- tags which are wiki pages
@ GROUP BY 1
@ ORDER BY 2;
;

/*
** WEBPAGE: wcontent
**
**     all=1         Show deleted pages
**     showid        Show rid values for each page.
**
** List all available wiki pages with date created and last modified.
*/
void wcontent_page(void){
  Stmt q;
  double rNow;
  int showAll = P("all")!=0;
  int showRid = P("showid")!=0;
  int showCkBr;

  login_check_credentials();
  if( !g.okRdWiki ){ login_needed(); return; }
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  style_set_current_feature("wiki");
  style_header("Available Wiki Pages");
  if( showAll ){
    style_submenu_element("Active", "Only Active Pages", "%s/wcontent", g.zTop);
    style_submenu_element("Active", "%R/wcontent");
  }else{
    style_submenu_element("All", "All", "%s/wcontent?all=1", g.zTop);
    style_submenu_element("All", "%R/wcontent?all=1");
  }
  cgi_check_for_malice();
  showCkBr = db_exists(
    "SELECT tag.tagname AS tn FROM tag JOIN tagxref USING(tagid) "
    "WHERE ( tn GLOB 'wiki-checkin/*' OR tn GLOB 'wiki-branch/*' ) "
    "  AND TYPEOF(tagxref.value+0)='integer'" );
  @ <ul>
  db_prepare(&q, 
  if( showCkBr ){
    showCkBr = P("showckbr")!=0;
    style_submenu_checkbox("showckbr", "Show associated wikis", 0, 0);
  }
  wiki_standard_submenu(W_ALL_BUT(W_LIST));
  db_prepare(&q, listAllWikiPages/*works-like:""*/);
    "SELECT"
    "  substr(tagname, 6),"
  @ <div class="brlist">
  @ <table class='sortable' data-column-types='tKN' data-init-sort='1'>
  @ <thead><tr>
    "  (SELECT value FROM tagxref WHERE tagid=tag.tagid ORDER BY mtime DESC)"
    "  FROM tag WHERE tagname GLOB 'wiki-*'"
    " ORDER BY lower(tagname) /*sort*/"
  );
  @ <th>Name</th>
  @ <th>Last Change</th>
  @ <th>Versions</th>
  if( showRid ){
    @ <th>RID</th>
  }
  @ </tr></thead><tbody>
  rNow = db_double(0.0, "SELECT julianday('now')");
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    int size = db_column_int(&q, 1);
    if( size>0 ){
      @ <li><a href="%s(g.zTop)/wiki?name=%T(zName)">%h(zName)</a></li>
    }else if( showAll ){
      @ <li><a href="%s(g.zTop)/wiki?name=%T(zName)"><s>%h(zName)</s></a></li>
    const char *zWName = db_column_text(&q, 0);
    const char *zSort = db_column_text(&q, 1);
    int wrid = db_column_int(&q, 2);
    double rWmtime = db_column_double(&q, 3);
    sqlite3_int64 iMtime = (sqlite3_int64)(rWmtime*86400.0);
    char *zAge;
    int wcnt = db_column_int(&q, 4);
    char *zWDisplayName;

    if( !showCkBr &&
        (sqlite3_strglob("checkin/*", zWName)==0 ||
         sqlite3_strglob("branch/*", zWName)==0) ){
      continue;
    }
    if( sqlite3_strglob("checkin/*", zWName)==0 ){
      zWDisplayName = mprintf("%.25s...", zWName);
    }else{
      zWDisplayName = mprintf("%s", zWName);
    }
    if( wrid==0 ){
      if( !showAll ) continue;
      @ <tr><td data-sortkey="%h(zSort)">\
      @ %z(href("%R/whistory?name=%T",zWName))<s>%h(zWDisplayName)</s></a></td>
    }else{
      @ <tr><td data-sortkey="%h(zSort)">\
      @ %z(href("%R/wiki?name=%T&p",zWName))%h(zWDisplayName)</a></td>
    }
    zAge = human_readable_age(rNow - rWmtime);
    @ <td data-sortkey="%016llx(iMtime)">%s(zAge)</td>
    fossil_free(zAge);
    @ <td>%z(href("%R/whistory?name=%T",zWName))%d(wcnt)</a></td>
    if( showRid ){
      @ <td>%d(wrid)</td>
  }
    }
    @ </tr>
    fossil_free(zWDisplayName);
  }
  @ </tbody></table></div>
  db_finalize(&q);
  @ </ul>
  style_footer();
  style_table_sorter();
  style_finish_page();
}

/*
** WEBPAGE: wfind
**
** URL: /wfind?title=TITLE
** List all wiki pages whose titles contain the search text
*/
void wfind_page(void){
  Stmt q;
  const char * zTitle;
  const char *zTitle;
  login_check_credentials();
  if( !g.okRdWiki ){ login_needed(); return; }
  if( !g.perm.RdWiki ){ login_needed(g.anon.RdWiki); return; }
  zTitle = PD("title","*");
  cgi_check_for_malice();
  style_set_current_feature("wiki");
  style_header("Wiki Pages Found");
  @ <ul>
  db_prepare(&q, 
  db_prepare(&q,
    "SELECT substr(tagname, 6, 1000) FROM tag WHERE tagname like 'wiki-%%%q%%'"
    " ORDER BY lower(tagname) /*sort*/" ,
	zTitle);
    zTitle);
  while( db_step(&q)==SQLITE_ROW ){
    const char *zName = db_column_text(&q, 0);
    @ <li><a href="%s(g.zBaseURL)/wiki?name=%T(zName)">%h(zName)</a></li>
    @ <li>%z(href("%R/wiki?name=%T",zName))%h(zName)</a></li>
  }
  db_finalize(&q);
  @ </ul>
  style_footer();
  style_finish_page();
}

/*
** WEBPAGE: wiki_rules
*/
void wikirules_page(void){
  style_header("Wiki Formatting Rules");
  @ <h2>Formatting Rule Summary</h2>
  @ <ol>
  @ <li>Blank lines are paragraph breaks</li>
  @ <li>Bullets are "*" surrounded by two spaces at the beginning of the
  @ line.</li>
  @ <li>Enumeration items are "#" surrounded by two spaces at the beginning of
  @ a line.</li>
  @ <li>Indented pargraphs begin with a tab or two spaces.</li>
  @ <li>Hyperlinks are contained with square brackets:  "[target]" or
  @ "[target|name]".</li>
  @ <li>Most ordinary HTML works.</li>
  @ <li>&lt;verbatim&gt; and &lt;nowiki&gt;.</li>
  @ </ol>
  @ <p>We call the first five rules above "wiki" formatting rules.  The
  @ last two rules are the HTML formatting rule.</p>
  @ <h2>Formatting Rule Details</h2>
  @ <ol>
  @ <li> <p><b>Paragraphs</b>.  Any sequence of one or more blank lines forms
  @ a paragraph break.  Centered or right-justified paragraphs are not
  @ supported by wiki markup, but you can do these things if you need them
  @ using HTML.</p>
  @ <li> <p><b>Bullet Lists</b>.
  @ A bullet list item is a line that begins with a single "*" character
  @ surrounded on
  @ both sides by two or more spaces or by a tab.  Only a single level
  @ of bullet list is supported by wiki.  For nested lists, use HTML.</p>
  @ <li> <p><b>Enumeration Lists</b>.
  @ An enumeration list item is a line that begins with a single "#" character
  @ surrounded on both sides by two or more spaces or by a tab.  Only a single
  @ level of enumeration list is supported by wiki.  For nested lists or for
  @ enumerations that count using letters or roman numerials, use HTML.</p>
  @ <li> <p><b>Indented Paragraphs</b>.
  @ Any paragraph that begins with two or more spaces or a tab and
  @ which is not a bullet or enumeration list item is rendered 
  @ indented.  Only a single level of indentation is supported by wiki; use
  @ HTML for deeper indentation.</p>
  @ <li> <p><b>Hyperlinks</b>.
  @ Text within square brackets ("[...]") becomes a hyperlink.  The
  @ target can be a wiki page name, the artifact ID of a check-in or ticket,
  @ the name of an image, or a URL.  By default, the target is displayed
  @ as the text of the hyperlink.  But you can specify alternative text
  @ after the target name separated by a "|" character.</p>
  @ <p>You can also link to internal anchor names using [#anchor-name], providing
  @ you have added the necessary "&lt;a name="anchor-name"&gt;&lt;/a&gt;"
  @ tag to your wiki page.</p>
  @ <li> <p><b>HTML</b>.
  @ The following standard HTML elements may be used:
  @ &lt;a&gt;
  @ &lt;address&gt;
  @ &lt;b&gt;
  @ &lt;big&gt;
  @ &lt;blockquote&gt;
  @ &lt;br&gt;
  @ &lt;center&gt;
  @ &lt;cite&gt;
  @ &lt;code&gt;
  @ &lt;dd&gt;
  @ &lt;dfn&gt;
  @ &lt;div&gt;
  @ &lt;dl&gt;
  @ &lt;dt&gt;
  @ &lt;em&gt;
  @ &lt;font&gt;
  @ &lt;h1&gt;
  @ &lt;h2&gt;
  @ &lt;h3&gt;
  @ &lt;h4&gt;
  @ &lt;h5&gt;
  @ &lt;h6&gt;
  @ &lt;hr&gt;
  @ &lt;img&gt;
  @ &lt;i&gt;
  @ &lt;kbd&gt;
  @ &lt;li&gt;
  @ &lt;nobr&gt;
  @ &lt;ol&gt;
  @ &lt;p&gt;
  @ &lt;pre&gt;
  @ &lt;s&gt;
  @ &lt;samp&gt;
  @ &lt;small&gt;
  @ &lt;strike&gt;
  @ &lt;strong&gt;
  @ &lt;sub&gt;
  @ &lt;sup&gt;
  @ &lt;table&gt;
  @ &lt;td&gt;
  @ &lt;th&gt;
  @ &lt;tr&gt;
  @ &lt;tt&gt;
  @ &lt;u&gt;
  @ &lt;ul&gt;
  @ &lt;var&gt;.
  @ In addition, there are two non-standard elements available:
  @ &lt;verbatim&gt; and &lt;nowiki&gt;.
  @ No other elements are allowed.  All attributes are checked and
  @ only a few benign attributes are allowed on each element.
  @ In particular, any attributes that specify javascript or CSS
  @ are elided.</p></li>
  @ <li><p><b>Special Markup.</b>
  @ The &lt;nowiki&gt; tag disables all wiki formatting rules
  @ through the matching &lt;/nowiki&gt; element.
  @ The &lt;verbatim&gt; tag works like &lt;pre&gt; with the addition
  @ that it also disables all wiki and HTML markup
  @ through the matching &lt;/verbatim&gt;.
  @ </ol>
  style_footer();
}

/*
** Add a new wiki page to the respository.  The page name is
** given by the zPageName parameter.  isNew must be true to create
** a new page.  If no previous page with the name zPageName exists
** Add a new wiki page to the repository.  The page name is
** given by the zPageName parameter.  rid must be zero to create
** a new page otherwise the page identified by rid is updated.
** and isNew is false, then this routine throws an error.
**
** The content of the new page is given by the blob pContent.
**
** zMimeType specifies the N-card for the wiki page. If it is 0,
** empty, or "text/x-fossil-wiki" (the default format) then it is
** ignored.
*/
int wiki_cmd_commit(char const * zPageName, int isNew, Blob *pContent){
int wiki_cmd_commit(const char *zPageName, int rid, Blob *pContent,
                    const char *zMimeType, int localUser){
  Blob wiki;              /* Wiki page content */
  Blob cksum;             /* wiki checksum */
  int rid;                /* artifact ID of parent page */
  int nrid;               /* artifact ID of new wiki page */
  char *zDate;            /* timestamp */
  char *zUuid;            /* uuid for rid */

  rid = db_int(0,
     "SELECT x.rid FROM tag t, tagxref x"
     " WHERE x.tagid=t.tagid AND t.tagname='wiki-%q'"
     " ORDER BY x.mtime DESC LIMIT 1",
     zPageName
  );
  if( rid==0 && !isNew ){
    fossil_fatal("no such wiki page: %s", zPageName);
  }
  if( rid!=0 && isNew ){
    fossil_fatal("wiki page %s already exists", zPageName);
  }

  blob_zero(&wiki);
  zDate = db_text(0, "SELECT datetime('now')");
  zDate = date_in_standard_format("now");
  zDate[10] = 'T';
  blob_appendf(&wiki, "D %s\n", zDate);
  free(zDate);
  blob_appendf(&wiki, "L %F\n", zPageName );
  if( zMimeType && *zMimeType
      && 0!=fossil_strcmp(zMimeType,"text/x-fossil-wiki") ){
    blob_appendf(&wiki, "N %F\n", zMimeType);
  }
  if( rid ){
    zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", rid);
    blob_appendf(&wiki, "P %s\n", zUuid);
    free(zUuid);
  }
  user_select();
  if( g.zLogin ){
      blob_appendf(&wiki, "U %F\n", g.zLogin);
  if( !login_is_nobody() ){
      blob_appendf(&wiki, "U %F\n", login_name());
  }
  blob_appendf( &wiki, "W %d\n%s\n", blob_size(pContent),
                blob_str(pContent) );
  md5sum_blob(&wiki, &cksum);
  blob_appendf(&wiki, "Z %b\n", &cksum);
  blob_reset(&cksum);
  db_begin_transaction();
  nrid = content_put( &wiki, 0, 0 );
  wiki_put(&wiki, 0, wiki_need_moderation(localUser));
  db_multi_exec("INSERT OR IGNORE INTO unsent VALUES(%d)", nrid);
  manifest_crosslink(nrid,&wiki);
  blob_reset(&wiki);
  content_deltify(rid,nrid,0);
  db_end_transaction(0);
  return 1;
}
  autosync(AUTOSYNC_PUSH);  
  return 1;

/*
** Determine the rid for a tech note given either its id, its timestamp,
** or its tag. Returns 0 if there is no such item and -1 if the details
** are ambiguous and could refer to multiple items.
*/
int wiki_technote_to_rid(const char *zETime) {
  int rid=0;                    /* Artifact ID of the tech note */
  int nETime = strlen(zETime);
  Stmt q;
  if( nETime>=4 && nETime<=HNAME_MAX && validate16(zETime, nETime) ){
    char zUuid[HNAME_MAX+1];
    memcpy(zUuid, zETime, nETime+1);
    canonical16(zUuid, nETime);
    db_prepare(&q,
      "SELECT e.objid"
      "  FROM event e, tag t"
      " WHERE e.type='e' AND e.tagid IS NOT NULL AND t.tagid=e.tagid"
      "   AND t.tagname GLOB 'event-%q*'",
      zUuid
    );
    if( db_step(&q)==SQLITE_ROW ){
      rid = db_column_int(&q, 0);
      if( db_step(&q)==SQLITE_ROW ) rid = -1;
    }
    db_finalize(&q);
  }
  if (!rid) {
    if (strlen(zETime)>4) {
      rid = db_int(0, "SELECT objid"
                      "  FROM event"
                      " WHERE datetime(mtime)=datetime('%q')"
                      "   AND type='e'"
                      "   AND tagid IS NOT NULL"
                      " ORDER BY objid DESC LIMIT 1",
                   zETime);
    }
  }
  if( !rid ) {
      /*
      ** At present, technote tags are prefixed with 'sym-', which shouldn't
      ** be the case, so we check for both with and without the prefix until
      ** such time as tags have the errant prefix dropped.
      */
      rid = db_int(0, "SELECT e.objid"
          "  FROM event e, tag t, tagxref tx"
          " WHERE e.type='e'"
          "   AND e.tagid IS NOT NULL"
          "   AND e.objid IN"
                      "       (SELECT rid FROM tagxref"
                      "         WHERE tagid=(SELECT tagid FROM tag"
                      "                       WHERE tagname GLOB '%q'))"
          "    OR e.objid IN"
                      "       (SELECT rid FROM tagxref"
                      "         WHERE tagid=(SELECT tagid FROM tag"
                      "                       WHERE tagname GLOB 'sym-%q'))"
          "   ORDER BY e.mtime DESC LIMIT 1",
       zETime, zETime);
  }
  return rid;
}

/*
** COMMAND: wiki
** COMMAND: wiki*
**
** Usage: %fossil wiki (export|create|commit|list) WikiName
**
** Run various subcommands to work with wiki entries.
** Run various subcommands to work with wiki entries or tech notes.
**
**     %fossil wiki export PAGENAME ?FILE?
** > fossil wiki export ?OPTIONS? PAGENAME ?FILE?
** > fossil wiki export ?OPTIONS? -t|--technote DATETIME|TECHNOTE-ID|TAG ?FILE?
**
**        Sends the latest version of the PAGENAME wiki
**        entry to the given file or standard output.
**       Sends the latest version of either a wiki page or of a tech
**       note to the given file or standard output.  A filename of "-"
**
**     %fossil wiki commit PAGENAME ?FILE?
**       writes the output to standard output.  The directory parts of
**       the output filename are created if needed.
**       If PAGENAME is provided, the named wiki page will be output.
**
**        Commit changes to a wiki page from FILE or from standard
**        input.
**       Options:
**         -t|--technote DATETIME|TECHNOTE-ID|TAG
**                    Specifies that a technote, rather than a wiki page,
**                    will be exported. If DATETIME is used, the most
**                    recently modified tech note with that DATETIME will
**                    output. If TAG is used, the most recently modified
**                    tech note with that TAG will be output.
**         -h|--html  The body (only) is rendered in HTML form, without
**                    any page header/foot or HTML/BODY tag wrappers.
**         -H|--HTML  Works like -h|-html but wraps the output in
**                    <html><body>...</body></html>.
**         -p|--pre   If -h|-H is used and the page or technote has
**                    the text/plain mimetype, its HTML-escaped output
**                    will be wrapped in <pre>...</pre>.
**
**     %fossil wiki create PAGENAME ?FILE?
** > fossil wiki (create|commit) (PAGENAME | TECHNOTE-COMMENT) ?FILE? ?OPTIONS?
**
**        Create a new wiki page with initial content taken from
**        FILE or from standard input.
**       Create a new or commit changes to an existing wiki page or
**       technote from FILE or from standard input. PAGENAME is the
**
**     %fossil wiki list
**       name of the wiki entry. TECHNOTE-COMMENT is the timeline comment of
**       the technote.
**
**        Lists all wiki entries, one per line, ordered
**        case-insentively by name.
**
** TODOs:
**
**     %fossil wiki export ?-u ARTIFACT? WikiName ?FILE?
**
**        Outputs the selected version of WikiName.
**       Options:
**         -M|--mimetype TEXT-FORMAT   The mime type of the update.
**                                     Defaults to the type used by
**                                     the previous version of the
**                                     page, or text/x-fossil-wiki.
**                                     Valid values are: text/x-fossil-wiki,
**                                     text/x-markdown and text/plain. fossil,
**                                     markdown or plain can be specified as
**                                     synonyms of these values.
**         -t|--technote DATETIME      Specifies the timestamp of
**                                     the technote to be created or
**                                     updated. The timestamp specifies when
**                                     this technote appears in the timeline
**                                     and is its permanent handle although
**                                     it may not be unique. When updating
**                                     a technote the most recently modified
**                                     tech note with the specified timestamp
**                                     will be updated.
**         -t|--technote TECHNOTE-ID   Specifies the technote to be
**                                     updated by its technote id, which is
**                                     its UUID.
**         --technote-tags TAGS        The set of tags for a technote.
**         --technote-bgcolor COLOR    The color used for the technote
**                                     on the timeline.
**
**     %fossil wiki delete ?-m MESSAGE? WikiName
** > fossil wiki list ?OPTIONS?
** > fossil wiki ls ?OPTIONS?
**
**        The same as deleting a file entry, but i don't know if fossil
**        supports a commit message for Wiki entries.
**       Lists all wiki entries, one per line, ordered
**       case-insensitively by name.  Wiki pages associated with
**
**     %fossil wiki ?-u? ?-d? ?-s=[|]? list
**       check-ins and branches are NOT shown, unless -a is given.
**
**        Lists the artifact ID and/or Date of last change along with
**        each entry name, delimited by the -s char.
**       Options:
**         --all                       Include "deleted" pages in output.
**                                     By default deleted pages are elided.
**         -t|--technote               Technotes will be listed instead of
**                                     pages. The technotes will be in order
**                                     of timestamp with the most recent
**                                     first.
**         -a|--show-associated        Show wiki pages associated with
**                                     check-ins and branches.
**         -s|--show-technote-ids      The id of the tech note will be listed
**                                     along side the timestamp. The tech note
**                                     id will be the first word on each line.
**                                     This option only applies if the
**                                     --technote option is also specified.
**
**     %fossil wiki diff ?ARTIFACT? ?-f infile[=stdin]? EntryName
** DATETIME may be "now" or "YYYY-MM-DDTHH:MM:SS.SSS". If in
** year-month-day form, it may be truncated, the "T" may be replaced by
** a space, and it may also name a timezone offset from UTC as "-HH:MM"
** (westward) or "+HH:MM" (eastward). Either no timezone suffix or "Z"
** means UTC.
**
**        Diffs the local copy of a page with a given version (defaulting
**        to the head version).
** The "Sandbox" wiki pseudo-page is a special case. Its name is
** checked case-insensitively and either "create" or "commit" may be
** used to update its contents.
*/
void wiki_cmd(void){
  int n;
  int isSandbox = 0;     /* true if dealing with sandbox pseudo-page */
  const int showAll = find_option("all", 0, 0)!=0;

  db_find_and_open_repository(1);
  db_find_and_open_repository(0, 0);
  if( g.argc<3 ){
    goto wiki_cmd_usage;
  }
  n = strlen(g.argv[2]);
  if( n==0 ){
    goto wiki_cmd_usage;
  }

  if( strncmp(g.argv[2],"export",n)==0 ){
    char const *zPageName;        /* Name of the wiki page to export */
    char const *zFile;            /* Name of the output file (0=stdout) */
    int rid;                /* Artifact ID of the wiki page */
    int i;                  /* Loop counter */
    char *zBody = 0;        /* Wiki page content */
    Manifest m;             /* Parsed wiki page content */
    if( (g.argc!=4) && (g.argc!=5) ){
      usage("export PAGENAME ?FILE?");
    }
    zPageName = g.argv[3];
    const char *zPageName = 0;    /* Name of the wiki page to export */
    const char *zFile;            /* Name of the output file (0=stdout) */
    const char *zETime;           /* The name of the technote to export */
    int rid = 0;                  /* Artifact ID of the wiki page */
    int i;                        /* Loop counter */
    char *zBody = 0;              /* Wiki page content */
    Blob body = empty_blob;       /* Wiki page content */
    Manifest *pWiki = 0;          /* Parsed wiki page content */
    int fHtml = 0;                /* Export in HTML form */
    FILE * pFile = 0;             /* Output file */
    int fPre = 0;                 /* Indicates that -h|-H should be
                                  ** wrapped in <pre>...</pre> if pWiki
                                  ** has the text/plain mimetype. */
    fHtml = find_option("HTML","H",0)!=0
      ? 2
      : (find_option("html","h",0)!=0 ? 1 : 0)
      /* 1 == -html, 2 == -HTML */;
    fPre = fHtml==0 ? 0 : find_option("pre","p",0)!=0;
    zETime = find_option("technote","t",1);
    verify_all_options();
    if( !zETime ){
      if( (g.argc!=4) && (g.argc!=5) ){
        usage("export ?-html? PAGENAME ?FILE?");
      }
      zPageName = g.argv[3];
    rid = db_int(0, "SELECT x.rid FROM tag t, tagxref x"
      " WHERE x.tagid=t.tagid AND t.tagname='wiki-%q'"
      " ORDER BY x.mtime DESC LIMIT 1",
      zPageName 
      isSandbox = is_sandbox(zPageName);
    );
    if( rid ){
      if(isSandbox){
      Blob content;
      content_get(rid, &content);
      manifest_parse(&m, &content);
      if( m.type==CFTYPE_WIKI ){
        zBody = m.zWiki;
      }
    }
    if( zBody==0 ){
      fossil_fatal("wiki page [%s] not found",zPageName);
    }
        zBody = db_get("sandbox", 0);
      }else{
        wiki_fetch_by_name(zPageName, 0, &rid, &pWiki);
        if(pWiki){
          zBody = pWiki->zWiki;
        }
      }
      if( zBody==0 ){
        fossil_fatal("wiki page [%s] not found",zPageName);
      }
    for(i=strlen(zBody); i>0 && isspace(zBody[i-1]); i--){}
    zFile  = (g.argc==4) ? 0 : g.argv[4];
      zFile = (g.argc==4) ? "-" : g.argv[4];
    if( zFile ){
      FILE * zF;
      short doClose = 0;
      if( (1 == strlen(zFile)) && ('-'==zFile[0]) ){
        zF = stdout;
      }else{
        zF = fopen( zFile, "w" );
        doClose = zF ? 1 : 0;
    }else{
      if( (g.argc!=3) && (g.argc!=4) ){
        usage("export ?-html? ?FILE? --technote "
              "DATETIME|TECHNOTE-ID");
      }
      rid = wiki_technote_to_rid(zETime);
      if ( rid==-1 ){
        fossil_fatal("ambiguous tech note id: %s", zETime);
      }
      if( (pWiki = manifest_get(rid, CFTYPE_EVENT, 0))!=0 ){
        zBody = pWiki->zWiki;
      }
      if( ! zF ){
        fossil_fatal("wiki export could not open output file for writing.");
      if( zBody==0 ){
        fossil_fatal("technote [%s] not found",zETime);
      }
      zFile = (g.argc==3) ? "-" : g.argv[3];
    }
    for(i=strlen(zBody); i>0 && fossil_isspace(zBody[i-1]); i--){}
    zBody[i] = 0;
      fprintf(zF,"%.*s\n", i, zBody);
      if( doClose ) fclose(zF);
    blob_init(&body, zBody, -1);
    if(fHtml==0){
      blob_append(&body, "\n", 1);
    }else{
      Blob html = empty_blob;   /* HTML-ized content */
      const char * zMimetype = isSandbox
        ? db_get("sandbox-mimetype", "text/x-fossil-wiki")
        : wiki_filter_mimetypes(pWiki->zMimetype);
      if( fossil_strcmp(zMimetype, "text/x-fossil-wiki")==0 ){
        wiki_convert(&body,&html,0);
      }else if( fossil_strcmp(zMimetype, "text/x-markdown")==0 ){
        markdown_to_html(&body,0,&html);
        safe_html_context(DOCSRC_WIKI);
        safe_html(&html);
      }else if( fossil_strcmp(zMimetype, "text/plain")==0 ){
	printf("%.*s\n", i, zBody);
        htmlize_to_blob(&html,zBody,i);
    }
    return;
  }else
      }else{
  if( strncmp(g.argv[2],"commit",n)==0
      || strncmp(g.argv[2],"create",n)==0 ){
    char *zPageName;
    Blob content;
        fossil_fatal("Unsupported MIME type '%s' for wiki page '%s'.",
                     zMimetype, pWiki ? pWiki->zWikiTitle : zPageName );
      }
      blob_reset(&body);
      body = html /* transfer memory */;
    }
    pFile = fossil_fopen_for_output(zFile);
    if(fHtml==2){
      fwrite("<html><body>", 1, 12, pFile);
    }
    if(fPre!=0){
      fwrite("<pre>", 1, 5, pFile);
    }
    fwrite(blob_buffer(&body), 1, blob_size(&body), pFile);
    if(fPre!=0){
      fwrite("</pre>", 1, 6, pFile);
    }
    if(fHtml==2){
      fwrite("</body></html>\n", 1, 15, pFile);
    }
    fossil_fclose(pFile);
    blob_reset(&body);
    manifest_destroy(pWiki);
    return;
  }else if( strncmp(g.argv[2],"commit",n)==0
            || strncmp(g.argv[2],"create",n)==0 ){
    const char *zPageName;        /* page name */
    Blob content;                 /* Input content */
    int rid = 0;
    Manifest *pWiki = 0;          /* Parsed wiki page content */
    const int isCreate = 'r'==g.argv[2][1] /* else "commit" */;
    const char *zMimeType = find_option("mimetype", "M", 1);
    const char *zETime = find_option("technote", "t", 1);
    const char *zTags = find_option("technote-tags", NULL, 1);
    const char *zClr = find_option("technote-bgcolor", NULL, 1);
    verify_all_options();
    if( g.argc!=4 && g.argc!=5 ){
      usage("commit PAGENAME ?FILE?");
      usage("commit|create PAGENAME ?FILE? [--mimetype TEXT-FORMAT]"
            " [--technote DATETIME] [--technote-tags TAGS]"
            " [--technote-bgcolor COLOR]");
    }
    zPageName = g.argv[3];
    if( g.argc==4 ){
      blob_read_from_channel(&content, stdin, -1);
    }else{
      blob_read_from_file(&content, g.argv[4]);
      blob_read_from_file(&content, g.argv[4], ExtFILE);
    }
    isSandbox = is_sandbox(zPageName);
    if ( !zETime ){
      if( !isSandbox ){
        wiki_fetch_by_name(zPageName, 0, &rid, &pWiki);
      }
    }else{
      rid = wiki_technote_to_rid(zETime);
      if( rid>0 ){
        pWiki = manifest_get(rid, CFTYPE_EVENT, 0);
      }
    }
    if( !zMimeType || !*zMimeType ){
      /* Try to deduce the mimetype based on the prior version. */
      if(isSandbox){
        zMimeType =
          wiki_filter_mimetypes(db_get("sandbox-mimetype",
                                       "text/x-fossil-wiki"));
      }else if( pWiki!=0 && (pWiki->zMimetype && *pWiki->zMimetype) ){
        zMimeType = pWiki->zMimetype;
      }
    }else{
      zMimeType = wiki_filter_mimetypes(zMimeType);
    }
    if( isCreate && rid>0 ){
      if ( !zETime ){
        fossil_fatal("wiki page %s already exists", zPageName);
      }else{
        /* Creating a tech note with same timestamp is permitted
           and should create a new tech note */
        rid = 0;
      }
    }else if( !isCreate && rid==0 && isSandbox==0 ){
      if ( !zETime ){
        fossil_fatal("no such wiki page: %s", zPageName);
      }else{
        fossil_fatal("no such tech note: %s", zETime);
      }
    }
    if( g.argv[2][1]=='r' ){
      wiki_cmd_commit(zPageName, 1, &content);
      printf("Created new wiki page %s.\n", zPageName);
    }else{

    if( !zETime ){
      if(isSandbox){
        db_set("sandbox",blob_str(&content),0);
        db_set("sandbox-mimetype",zMimeType,0);
        fossil_print("Updated sandbox pseudo-page.\n");
      }else{
        wiki_cmd_commit(zPageName, rid, &content, zMimeType, 1);
        if( g.argv[2][1]=='r' ){
          fossil_print("Created new wiki page %s.\n", zPageName);
        }else{
      wiki_cmd_commit(zPageName, 0, &content);
      printf("Updated wiki page %s.\n", zPageName);
    }
    blob_reset(&content);
  }else
  if( strncmp(g.argv[2],"delete",n)==0 ){
    if( g.argc!=5 ){
          fossil_print("Updated wiki page %s.\n", zPageName);
        }
      }
    }else{
      if( rid != -1 ){
        char *zMETime;          /* Normalized, mutable version of zETime */
        zMETime = db_text(0, "SELECT coalesce(datetime(%Q),datetime('now'))",
                          zETime);
        event_cmd_commit(zMETime, rid, &content, zMimeType, zPageName,
                         zTags, zClr);
        if( g.argv[2][1]=='r' ){
          fossil_print("Created new tech note %s.\n", zMETime);
        }else{
          fossil_print("Updated tech note %s.\n", zMETime);
        }
        free(zMETime);
      }else{
        fossil_fatal("ambiguous tech note id: %s", zETime);
      }
    }
    manifest_destroy(pWiki);
    blob_reset(&content);
  }else if( strncmp(g.argv[2],"delete",n)==0 ){
    if( g.argc!=4 ){
      usage("delete PAGENAME");
    }
    fossil_fatal("delete not yet implemented.");
  }else
  if( strncmp(g.argv[2],"list",n)==0 ){
  }else if(( strncmp(g.argv[2],"list",n)==0 )
          || ( strncmp(g.argv[2],"ls",n)==0 )){
    Stmt q;
    const int fTechnote = find_option("technote","t",0)!=0;
    const int showIds = find_option("show-technote-ids","s",0)!=0;
    const int showCkBr = find_option("show-associated","a",0)!=0;
    verify_all_options();
    if (fTechnote==0){
      db_prepare(&q, listAllWikiPages/*works-like:""*/);
    }else{
    db_prepare(&q, 
      "SELECT substr(tagname, 6) FROM tag WHERE tagname GLOB 'wiki-*'"
      " ORDER BY lower(tagname) /*sort*/"
    );
      db_prepare(&q,
        "SELECT datetime(e.mtime), substr(t.tagname,7), e.objid"
         " FROM event e, tag t"
        " WHERE e.type='e'"
          " AND e.tagid IS NOT NULL"
          " AND t.tagid=e.tagid"
        " ORDER BY e.mtime DESC /*sort*/"
      );
    }
    while( db_step(&q)==SQLITE_ROW ){
      const char *zName = db_column_text(&q, 0);
      const int wrid = db_column_int(&q, 2);
      if(!showAll && !wrid){
        continue;
      }
      if( !showCkBr &&
          (sqlite3_strglob("checkin/*", zName)==0 ||
           sqlite3_strglob("branch/*", zName)==0) ){
        continue;
      }
      if( showIds ){
        const char *zUuid = db_column_text(&q, 1);
        fossil_print("%s ",zUuid);
      }
      printf( "%s\n",zName);
      fossil_print( "%s\n",zName);
    }
    db_finalize(&q);
  }else
  }else{
  {
    goto wiki_cmd_usage;
  }
  return;

wiki_cmd_usage:
  usage("export|create|commit|list ...");
}

/*
** Allowed flags for wiki_render_associated
*/
#if INTERFACE
#define WIKIASSOC_FULL_TITLE  0x00001   /* Full title */
#define WIKIASSOC_MENU_READ   0x00002   /* Add submenu link to read wiki */
#define WIKIASSOC_MENU_WRITE  0x00004   /* Add submenu link to add wiki */
#define WIKIASSOC_ALL         0x00007   /* All of the above */
#endif

/*
** Show the default Section label for an associated wiki page.
*/
static void wiki_section_label(
  const char *zPrefix,   /* "branch", "tag", or "checkin" */
  const char *zName,     /* Name of the object */
  unsigned int mFlags    /* Zero or more WIKIASSOC_* flags */
){
  if( (mFlags & WIKIASSOC_FULL_TITLE)==0 ){
    @ <div class="section accordion">About</div>
  }else if( zPrefix[0]=='c' ){  /* checkin/... */
    @ <div class="section accordion">About check-in %.20h(zName)</div>
  }else{
    @ <div class="section accordion">About %s(zPrefix) %h(zName)</div>
  }
}

/*
** Add an "Wiki" button in a submenu that links to the read-wiki page.
*/
static void wiki_submenu_to_edit_wiki(
  const char *zPrefix,   /* "branch", "tag", or "checkin" */
  const char *zName,     /* Name of the object */
  unsigned int mFlags    /* Zero or more WIKIASSOC_* flags */
){
  if( g.perm.RdWiki && (mFlags & WIKIASSOC_MENU_READ)!=0 ){
    style_submenu_element("Wiki", "%R/wikiedit?name=%s/%t", zPrefix, zName);
  }
}

/*
** Check to see if there exists a wiki page with a name zPrefix/zName.
** If there is, then render a <div class='section'>..</div> and
** return true.
**
** If there is no such wiki page, return false.
*/
int wiki_render_associated(
  const char *zPrefix,   /* "branch", "tag", or "checkin" */
  const char *zName,     /* Name of the object */
  unsigned int mFlags    /* Zero or more WIKIASSOC_* flags */
){
  int rid;
  Manifest *pWiki;
  if( !db_get_boolean("wiki-about",1) ) return 0;
  rid = db_int(0,
    "SELECT rid FROM tagxref"
    " WHERE tagid=(SELECT tagid FROM tag WHERE tagname='wiki-%q/%q')"
    " ORDER BY mtime DESC LIMIT 1",
    zPrefix, zName
  );
  pWiki = rid==0 ? 0 : manifest_get(rid, CFTYPE_WIKI, 0);
  if( pWiki==0 || pWiki->zWiki==0 || pWiki->zWiki[0]==0 ){
    if( g.perm.WrWiki && g.perm.Write && (mFlags & WIKIASSOC_MENU_WRITE)!=0 ){
      style_submenu_element("Add Wiki", "%R/wikiedit?name=%s/%t",
                            zPrefix, zName);
    }
    return 0;
  }
  if( fossil_strcmp(pWiki->zMimetype, "text/x-markdown")==0 ){
    Blob tail = BLOB_INITIALIZER;
    Blob title = BLOB_INITIALIZER;
    Blob markdown;
    blob_init(&markdown, pWiki->zWiki, -1);
    markdown_to_html(&markdown, &title, &tail);
    if( blob_size(&title) ){
      @ <div class="section accordion">%h(blob_str(&title))</div>
    }else{
      wiki_section_label(zPrefix, zName, mFlags);
    }
    wiki_submenu_to_edit_wiki(zPrefix, zName, mFlags);
    @ <div class="accordion_panel">
    safe_html_context(DOCSRC_WIKI);
    safe_html(&tail);
    convert_href_and_output(&tail);
    @ </div>
    blob_reset(&tail);
    blob_reset(&title);
    blob_reset(&markdown);
  }else if( fossil_strcmp(pWiki->zMimetype, "text/plain")==0 ){
    wiki_section_label(zPrefix, zName, mFlags);
    wiki_submenu_to_edit_wiki(zPrefix, zName, mFlags);
    @ <div class="accordion_panel"><pre>
    @ %h(pWiki->zWiki)
    @ </pre></div>
  }else{
    Blob tail = BLOB_INITIALIZER;
    Blob title = BLOB_INITIALIZER;
    Blob wiki;
    Blob *pBody;
    blob_init(&wiki, pWiki->zWiki, -1);
    if( wiki_find_title(&wiki, &title, &tail) ){
      @ <div class="section accordion">%h(blob_str(&title))</div>
      pBody = &tail;
    }else{
      wiki_section_label(zPrefix, zName, mFlags);
      pBody = &wiki;
    }
    wiki_submenu_to_edit_wiki(zPrefix, zName, mFlags);
    @ <div class="accordion_panel"><div class="wiki">
    wiki_convert(pBody, 0, WIKI_BUTTONS);
    @ </div></div>
    blob_reset(&tail);
    blob_reset(&title);
    blob_reset(&wiki);
  }
  manifest_destroy(pWiki);
  builtin_request_js("accordion.js");
  return 1;
}
Added src/wiki.wiki.


























































































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<h2>Wiki Formatting Rule Summary</h2>

  #  Blank lines are paragraph breaks
  #  Bullets are "*" surrounded by two spaces at the beginning of a line
  #  Enumeration items are "#" or a digit and a "." surrounded by two
     spaces at the beginning of a line
  #  Indented paragraphs begin with a tab or two spaces
  #  Hyperlinks are contained within square brackets:
     <nowiki>"<b>[</b><i>target</i><b>]</b>"
     or "<b>[</b><i>target</i><b>|</b><i>label</i><b>]</b>"</nowiki>
  #  Most ordinary HTML works
  #  &lt;verbatim&gt; and &lt;nowiki&gt;

We call the first five rules above the "wiki" formatting rules.
The last two rules are the HTML formatting rules.

<h2>Formatting Rule Details</h2>

  1.  <b>Paragraphs.</b>
      Any sequence of one or more blank lines forms a paragraph break.
      Centered or right-justified paragraphs are not supported by wiki markup,
      but you can do these things if you need them using HTML.

  2.  <b>Bullet Lists.</b>
      A bullet list item is a line that begins with a single "*" character
      surrounded on both sides by two or more spaces or by a tab.
      Only a single level of bullet list is supported by wiki.
      For nested lists, use HTML.

  3.  <b>Enumeration Lists.</b>
      An enumeration list item is a line that begins with a single "#"
      character surrounded on both sides by two or more spaces or by a tab.
      Or it can be a number and a "." (ex:  "5.") surrounded on both sides
      by two spaces or a tab.
      Only a single level of enumeration list is supported by wiki.
      For nested lists or for enumerations that count using letters or
      roman numerals, use HTML.

  4.  <b>Indented Paragraphs.</b>
      Any paragraph that begins with two or more spaces or a tab and which
      is not a bullet or enumeration list item is rendered indented.
      Only a single level of indentation is supported by wiki.
      Use HTML for deeper indentation.

  5.  <b>Hyperlinks.</b>
      Text within square brackets <nowiki>("[...]")</nowiki> becomes a
      hyperlink. The target can be a wiki page name, the artifact ID of
      a check-in or ticket, the name of an image, a URL, or an
      [#intermap|interwiki link] of the form 
      "<i>Tag</i><b>:</b><i>PageName</i>".
      By default, the target is displayed as the text of the hyperlink.
      But you can specify alternative text after the target name
      separated by a "|" character.
      You can also link to internal anchor names using 
      <nowiki>[#anchor-name],</nowiki> providing you have added the necessary 
      "&lt;a name='anchor-name'&gt;&lt;/a&gt;" tag to your wiki page.

  6.  <b>HTML.</b>
      The following standard HTML elements may be used:
      &lt;a&gt; &lt;address&gt; &lt;article&gt; &lt;aside&gt; &lt;b&gt;
      &lt;big&gt; &lt;blockquote&gt; &lt;br&gt; &lt;center&gt; &lt;cite&gt;
      &lt;code&gt; &lt;col&gt; &lt;colgroup&gt; &lt;dd&gt; 
      &lt;del&gt; &lt;dfn&gt;
      &lt;div&gt; &lt;dl&gt; &lt;dt&gt; &lt;em&gt; &lt;font&gt; &lt;footer&gt;
      &lt;ins&gt;
      &lt;h1&gt; &lt;h2&gt; &lt;h3&gt; &lt;h4&gt; &lt;h5&gt; &lt;h6&gt;
      &lt;header&gt; &lt;hr&gt; &lt;i&gt; &lt;img&gt; &lt;kbd&gt; &lt;li&gt;
      &lt;nav&gt; &lt;nobr&gt; &lt;nowiki&gt; &lt;ol&gt; &lt;p&gt; &lt;pre&gt;
      &lt;s&gt; &lt;samp&gt; &lt;section&gt; &lt;small&gt; &lt;span&gt;
      &lt;strike&gt; &lt;strong&gt; &lt;sub&gt; &lt;sup&gt; &lt;table&gt;
      &lt;tbody&gt; &lt;td&gt; &lt;tfoot&gt; &lt;th&gt; &lt;thead&gt;
      &lt;title&gt; &lt;tr&gt; &lt;tt&gt; &lt;u&gt; &lt;ul&gt; &lt;var&gt;
      &lt;verbatim&gt;. There are two non-standard elements available:
      &lt;verbatim&gt; and &lt;nowiki&gt;. No other elements are allowed.
      All attributes are checked and only a few benign attributes are
      allowed on each element. In particular, any attributes that specify
      javascript or CSS are elided.

  7.  <b>Special Markup.</b>
      The &lt;nowiki&gt; tag disables all wiki formatting rules through
      the matching &lt;/nowiki&gt; element. The &lt;verbatim&gt; tag works
      like &lt;pre&gt; with the addition that it also disables all wiki
      and HTML markup through the matching &lt;/verbatim&gt;.
      Text within 
      <tt>&lt;verbatim&nbsp;type="pikchr"&gt;...&lt;/verbatim&gt;</tt>
      is formatted using <a href="https://pikchr.org/home">Pikchr</a>.


<a name="intermap"></a>
<h2>Interwiki Tag [/intermap|Map]</h2>
Changes to src/wikiformat.c.
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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to do formatting of wiki text.
*/
#include <assert.h>
#include "config.h"
#include <assert.h>
#include "wikiformat.h"

#if INTERFACE
/*
** Allowed wiki transformation operations
*/
#define WIKI_NOFOLLOW       0x001
#define WIKI_HTML           0x002
#define WIKI_INLINE         0x004  /* Do not surround with <p>..</p> */
#define WIKI_NOBLOCK        0x008  /* No block markup of any kind */
#define WIKI_HTMLONLY       0x001  /* HTML markup only.  No wiki */
#define WIKI_INLINE         0x002  /* Do not surround with <p>..</p> */
#define WIKI_NOBLOCK        0x004  /* No block markup of any kind */
#define WIKI_BUTTONS        0x008  /* Allow sub-menu buttons */
#define WIKI_NOBADLINKS     0x010  /* Ignore broken hyperlinks */
#define WIKI_LINKSONLY      0x020  /* No markup.  Only decorate links */
#define WIKI_NEWLINE        0x040  /* Honor \n - break lines at each \n */
#define WIKI_MARKDOWNLINKS  0x080  /* Resolve hyperlinks as in markdown */
#define WIKI_SAFE           0x100  /* Make the result safe for embedding */
#define WIKI_TARGET_BLANK   0x200  /* Hyperlinks go to a new window */
#define WIKI_NOBRACKET      0x400  /* Omit extra [..] around hyperlinks */
#endif


/*
** These are the only markup attributes allowed.
*/
enum allowed_attr_t {
#define ATTR_ALIGN              1
#define ATTR_ALT                2
#define ATTR_BGCOLOR            3
#define ATTR_BORDER             4
#define ATTR_CELLPADDING        5
#define ATTR_CELLSPACING        6
#define ATTR_CLEAR              7
#define ATTR_COLOR              8
#define ATTR_COLSPAN            9
#define ATTR_COMPACT            10
#define ATTR_FACE               11
#define ATTR_HEIGHT             12
#define ATTR_HREF               13
#define ATTR_HSPACE             14
#define ATTR_ID                 15
#define ATTR_NAME               16
#define ATTR_ROWSPAN            17
#define ATTR_SIZE               18
#define ATTR_SRC                19
#define ATTR_START              20
#define ATTR_TYPE               21
#define ATTR_VALIGN             22
#define ATTR_VALUE              23
#define ATTR_VSPACE             24
#define ATTR_WIDTH              25
#define AMSK_ALIGN              0x0000001
#define AMSK_ALT                0x0000002
#define AMSK_BGCOLOR            0x0000004
#define AMSK_BORDER             0x0000008
#define AMSK_CELLPADDING        0x0000010
#define AMSK_CELLSPACING        0x0000020
#define AMSK_CLEAR              0x0000040
#define AMSK_COLOR              0x0000080
#define AMSK_COLSPAN            0x0000100
#define AMSK_COMPACT            0x0000200
#define AMSK_FACE               0x0000400
#define AMSK_HEIGHT             0x0000800
#define AMSK_HREF               0x0001000
#define AMSK_HSPACE             0x0002000
#define AMSK_ID                 0x0004000
#define AMSK_NAME               0x0008000
#define AMSK_ROWSPAN            0x0010000
#define AMSK_SIZE               0x0020000
#define AMSK_SRC                0x0040000
#define AMSK_START              0x0080000
#define AMSK_TYPE               0x0100000
#define AMSK_VALIGN             0x0200000
#define AMSK_VALUE              0x0400000
#define AMSK_VSPACE             0x0800000
#define AMSK_WIDTH              0x1000000
  ATTR_ALIGN = 1,
  ATTR_ALT,
  ATTR_BGCOLOR,
  ATTR_BORDER,
  ATTR_CELLPADDING,
  ATTR_CELLSPACING,
  ATTR_CLASS,
  ATTR_CLEAR,
  ATTR_COLOR,
  ATTR_COLSPAN,
  ATTR_COMPACT,
  ATTR_FACE,
  ATTR_HEIGHT,
  ATTR_HREF,
  ATTR_HSPACE,
  ATTR_ID,
  ATTR_LINKS,
  ATTR_NAME,
  ATTR_ROWSPAN,
  ATTR_SIZE,
  ATTR_SRC,
  ATTR_START,
  ATTR_STYLE,
  ATTR_TARGET,
  ATTR_TITLE,
  ATTR_TYPE,
  ATTR_VALIGN,
  ATTR_VALUE,
  ATTR_VSPACE,
  ATTR_WIDTH
};

enum amsk_t {
  AMSK_ALIGN        = 0x00000001,
  AMSK_ALT          = 0x00000002,
  AMSK_BGCOLOR      = 0x00000004,
  AMSK_BORDER       = 0x00000008,
  AMSK_CELLPADDING  = 0x00000010,
  AMSK_CELLSPACING  = 0x00000020,
  AMSK_CLASS        = 0x00000040,
  AMSK_CLEAR        = 0x00000080,
  AMSK_COLOR        = 0x00000100,
  AMSK_COLSPAN      = 0x00000200,
  AMSK_COMPACT      = 0x00000400,
  AMSK_FACE         = 0x00000800,
  AMSK_HEIGHT       = 0x00001000,
  AMSK_HREF         = 0x00002000,
  AMSK_HSPACE       = 0x00004000,
  AMSK_ID           = 0x00008000,
  AMSK_LINKS        = 0x00010000,
  AMSK_NAME         = 0x00020000,
  AMSK_ROWSPAN      = 0x00040000,
  AMSK_SIZE         = 0x00080000,
  AMSK_SRC          = 0x00100000,
  AMSK_START        = 0x00200000,
  AMSK_STYLE        = 0x00400000,
  AMSK_TARGET       = 0x00800000,
  AMSK_TITLE        = 0x01000000,
  AMSK_TYPE         = 0x02000000,
  AMSK_VALIGN       = 0x04000000,
  AMSK_VALUE        = 0x08000000,
  AMSK_VSPACE       = 0x10000000,
  AMSK_WIDTH        = 0x20000000
#define AMSK_CLASS              0x2000000
};

static const struct AllowedAttribute {
  const char *zName;
  unsigned int iMask;
} aAttribute[] = {
  /* These indexes MUST line up with their
     corresponding allowed_attr_t enum values.
  */
  { 0, 0 },
  { "align",         AMSK_ALIGN,          },
  { "alt",           AMSK_ALT,            },
  { "bgcolor",       AMSK_BGCOLOR,        },
  { "border",        AMSK_BORDER,         },
  { "cellpadding",   AMSK_CELLPADDING,    },
  { "cellspacing",   AMSK_CELLSPACING,    },
  { "class",         AMSK_CLASS,          },
  { "clear",         AMSK_CLEAR,          },
  { "color",         AMSK_COLOR,          },
  { "colspan",       AMSK_COLSPAN,        },
  { "compact",       AMSK_COMPACT,        },
  { "face",          AMSK_FACE,           },
  { "height",        AMSK_HEIGHT,         },
  { "href",          AMSK_HREF,           },
  { "hspace",        AMSK_HSPACE,         },
  { "id",            AMSK_ID,             },
  { "name",          AMSK_NAME,           },
  { "rowspan",       AMSK_ROWSPAN,        },
  { "size",          AMSK_SIZE,           },
  { "src",           AMSK_SRC,            },
  { "start",         AMSK_START,          },
  { "type",          AMSK_TYPE,           },
  { "valign",        AMSK_VALIGN,         },
  { "value",         AMSK_VALUE,          },
  { "vspace",        AMSK_VSPACE,         },
  { "width",         AMSK_WIDTH,          },
  { "align",         AMSK_ALIGN          },
  { "alt",           AMSK_ALT            },
  { "bgcolor",       AMSK_BGCOLOR        },
  { "border",        AMSK_BORDER         },
  { "cellpadding",   AMSK_CELLPADDING    },
  { "cellspacing",   AMSK_CELLSPACING    },
  { "class",         AMSK_CLASS          },
  { "clear",         AMSK_CLEAR          },
  { "color",         AMSK_COLOR          },
  { "colspan",       AMSK_COLSPAN        },
  { "compact",       AMSK_COMPACT        },
  { "face",          AMSK_FACE           },
  { "height",        AMSK_HEIGHT         },
  { "href",          AMSK_HREF           },
  { "hspace",        AMSK_HSPACE         },
  { "id",            AMSK_ID             },
  { "links",         AMSK_LINKS          },
  { "name",          AMSK_NAME           },
  { "rowspan",       AMSK_ROWSPAN        },
  { "size",          AMSK_SIZE           },
  { "src",           AMSK_SRC            },
  { "start",         AMSK_START          },
  { "style",         AMSK_STYLE          },
  { "target",        AMSK_TARGET         },
  { "title",         AMSK_TITLE          },
  { "type",          AMSK_TYPE           },
  { "valign",        AMSK_VALIGN         },
  { "value",         AMSK_VALUE          },
  { "vspace",        AMSK_VSPACE         },
  { "width",         AMSK_WIDTH          },
};

/*
** Use binary search to locate a tag in the aAttribute[] table.
*/
static int findAttr(const char *z){
  int i, c, first, last;
  first = 1;
  last = sizeof(aAttribute)/sizeof(aAttribute[0]) - 1;
  last = count(aAttribute) - 1;
  while( first<=last ){
    i = (first+last)/2;
    c = strcmp(aAttribute[i].zName, z);
    c = fossil_strcmp(aAttribute[i].zName, z);
    if( c==0 ){
      return i;
    }else if( c<0 ){
      first = i+1;
    }else{
      last = i-1;
    }
  }
  return 0;
}



/*
** Allowed markup.
**
** Except for MARKUP_INVALID, this must all be in alphabetical order
** and in numerical sequence.  The first markup type must be zero.
** The value for MARKUP_XYZ must correspond to the <xyz> entry
** in aAllowedMarkup[].
** in aMarkup[].
*/
enum markup_t {
#define MARKUP_INVALID           0
#define MARKUP_A                 1
#define MARKUP_ADDRESS           2
#define MARKUP_B                 3
#define MARKUP_BIG               4
#define MARKUP_BLOCKQUOTE        5
#define MARKUP_BR                6
#define MARKUP_CENTER            7
#define MARKUP_CITE              8
#define MARKUP_CODE              9
#define MARKUP_DD               10
#define MARKUP_DFN              11
#define MARKUP_DIV              12
#define MARKUP_DL               13
#define MARKUP_DT               14
#define MARKUP_EM               15
#define MARKUP_FONT             16
#define MARKUP_H1               17
#define MARKUP_H2               18
#define MARKUP_H3               19
#define MARKUP_H4               20
#define MARKUP_H5               21
#define MARKUP_H6               22
#define MARKUP_HR               23
#define MARKUP_I                24
#define MARKUP_IMG              25
#define MARKUP_KBD              26
#define MARKUP_LI               27
#define MARKUP_NOBR             28
#define MARKUP_NOWIKI           29
#define MARKUP_OL               30
#define MARKUP_P                31
#define MARKUP_PRE              32
#define MARKUP_S                33
#define MARKUP_SAMP             34
#define MARKUP_SMALL            35
#define MARKUP_STRIKE           36
#define MARKUP_STRONG           37
#define MARKUP_SUB              38
#define MARKUP_SUP              39
#define MARKUP_TABLE            40
#define MARKUP_TD               41
#define MARKUP_TH               42
#define MARKUP_TR               43
#define MARKUP_TT               44
#define MARKUP_U                45
#define MARKUP_UL               46
#define MARKUP_VAR              47
#define MARKUP_VERBATIM         48
  MARKUP_INVALID = 0,
  MARKUP_A,
  MARKUP_ABBR,
  MARKUP_ADDRESS,
  MARKUP_HTML5_ARTICLE,
  MARKUP_HTML5_ASIDE,
  MARKUP_B,
  MARKUP_BIG,
  MARKUP_BLOCKQUOTE,
  MARKUP_BR,
  MARKUP_CENTER,
  MARKUP_CITE,
  MARKUP_CODE,
  MARKUP_COL,
  MARKUP_COLGROUP,
  MARKUP_DD,
  MARKUP_DEL,
  MARKUP_DETAILS,
  MARKUP_DFN,
  MARKUP_DIV,
  MARKUP_DL,
  MARKUP_DT,
  MARKUP_EM,
  MARKUP_FONT,
  MARKUP_HTML5_FOOTER,
  MARKUP_H1,
  MARKUP_H2,
  MARKUP_H3,
  MARKUP_H4,
  MARKUP_H5,
  MARKUP_H6,
  MARKUP_HTML5_HEADER,
  MARKUP_HR,
  MARKUP_I,
  MARKUP_IMG,
  MARKUP_INS,
  MARKUP_KBD,
  MARKUP_LI,
  MARKUP_HTML5_NAV,
  MARKUP_NOBR,
  MARKUP_NOWIKI,
  MARKUP_OL,
  MARKUP_P,
  MARKUP_PRE,
  MARKUP_S,
  MARKUP_SAMP,
  MARKUP_HTML5_SECTION,
  MARKUP_SMALL,
  MARKUP_SPAN,
  MARKUP_STRIKE,
  MARKUP_STRONG,
  MARKUP_SUB,
  MARKUP_SUMMARY,
  MARKUP_SUP,
  MARKUP_TABLE,
  MARKUP_TBODY,
  MARKUP_TD,
  MARKUP_TFOOT,
  MARKUP_TH,
  MARKUP_THEAD,
  MARKUP_TITLE,
  MARKUP_TR,
  MARKUP_TT,
  MARKUP_U,
  MARKUP_UL,
  MARKUP_VAR,
  MARKUP_VERBATIM
};

/*
** The various markup is divided into the following types:
*/
#define MUTYPE_SINGLE      0x0001   /* <img>, <br>, or <hr> */
#define MUTYPE_BLOCK       0x0002   /* Forms a new paragraph. ex: <p>, <h2> */
#define MUTYPE_FONT        0x0004   /* Font changes. ex: <b>, <font>, <sub> */
#define MUTYPE_LIST        0x0010   /* Lists.  <ol>, <ul>, or <dl> */
#define MUTYPE_LI          0x0020   /* List items.  <li>, <dd>, <dt> */
#define MUTYPE_TABLE       0x0040   /* <table> */
#define MUTYPE_TR          0x0080   /* <tr> */
#define MUTYPE_TD          0x0100   /* <td> or <th> */
#define MUTYPE_SPECIAL     0x0200   /* <nowiki> or <verbatim> */
#define MUTYPE_HYPERLINK   0x0400   /* <a> */

/* MUTYPE values for elements that require strictly nested end-tags */
#define MUTYPE_Nested      0x0656

/*
** These markup types must have an end tag.
*/
#define MUTYPE_STACK  (MUTYPE_BLOCK | MUTYPE_FONT | MUTYPE_LIST | MUTYPE_TABLE)

/*
** This markup types are allowed for "inline" text.
*/
#define MUTYPE_INLINE (MUTYPE_FONT | MUTYPE_HYPERLINK)

static const struct AllowedMarkup {
  const char *zName;       /* Name of the markup */
  char iCode;              /* The MARKUP_* code */
  short int iType;         /* The MUTYPE_* code */
  int allowedAttr;         /* Allowed attributes on this markup */
} aMarkup[] = {
 { 0,               MARKUP_INVALID,      0,                    0  },
 { "a",             MARKUP_A,            MUTYPE_HYPERLINK,
                    AMSK_HREF|AMSK_NAME|AMSK_CLASS },
 { "address",       MARKUP_ADDRESS,      MUTYPE_BLOCK,         0  },
 { "b",             MARKUP_B,            MUTYPE_FONT,          0  },
 { "big",           MARKUP_BIG,          MUTYPE_FONT,          0  },
 { "blockquote",    MARKUP_BLOCKQUOTE,   MUTYPE_BLOCK,         0  },
 { "br",            MARKUP_BR,           MUTYPE_SINGLE,        AMSK_CLEAR  },
 { "center",        MARKUP_CENTER,       MUTYPE_BLOCK,         0  },
 { "cite",          MARKUP_CITE,         MUTYPE_FONT,          0  },
 { "code",          MARKUP_CODE,         MUTYPE_FONT,          0  },
 { "dd",            MARKUP_DD,           MUTYPE_LI,            0  },
 { "dfn",           MARKUP_DFN,          MUTYPE_FONT,          0  },
 { "div",           MARKUP_DIV,          MUTYPE_BLOCK,         AMSK_ID|AMSK_CLASS      },
 { "dl",            MARKUP_DL,           MUTYPE_LIST,          AMSK_COMPACT },
 { "dt",            MARKUP_DT,           MUTYPE_LI,            0  },
 { "em",            MARKUP_EM,           MUTYPE_FONT,          0  },
                    AMSK_HREF|AMSK_NAME|AMSK_CLASS|AMSK_TARGET|AMSK_STYLE|
                    AMSK_TITLE},
 { "abbr",          MARKUP_ABBR,         MUTYPE_FONT,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE|AMSK_TITLE },
 { "address",       MARKUP_ADDRESS,      MUTYPE_BLOCK,         AMSK_STYLE },
 { "article",       MARKUP_HTML5_ARTICLE, MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "aside",         MARKUP_HTML5_ASIDE,  MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "b",             MARKUP_B,            MUTYPE_FONT,          AMSK_STYLE },
 { "big",           MARKUP_BIG,          MUTYPE_FONT,          AMSK_STYLE },
 { "blockquote",    MARKUP_BLOCKQUOTE,   MUTYPE_BLOCK,         AMSK_STYLE },
 { "br",            MARKUP_BR,           MUTYPE_SINGLE,        AMSK_CLEAR },
 { "center",        MARKUP_CENTER,       MUTYPE_BLOCK,         AMSK_STYLE },
 { "cite",          MARKUP_CITE,         MUTYPE_FONT,          AMSK_STYLE },
 { "code",          MARKUP_CODE,         MUTYPE_FONT,          AMSK_STYLE },
 { "col",           MARKUP_COL,          MUTYPE_SINGLE,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_COLSPAN|AMSK_WIDTH|AMSK_STYLE },
 { "colgroup",      MARKUP_COLGROUP,     MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_COLSPAN|AMSK_WIDTH|AMSK_STYLE},
 { "dd",            MARKUP_DD,           MUTYPE_LI,            AMSK_STYLE },
 { "del",           MARKUP_DEL,          MUTYPE_FONT,          AMSK_STYLE },
 { "details",       MARKUP_DETAILS,      MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "dfn",           MARKUP_DFN,          MUTYPE_FONT,          AMSK_STYLE },
 { "div",           MARKUP_DIV,          MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "dl",            MARKUP_DL,           MUTYPE_LIST,
                    AMSK_COMPACT|AMSK_STYLE },
 { "dt",            MARKUP_DT,           MUTYPE_LI,            AMSK_STYLE },
 { "em",            MARKUP_EM,           MUTYPE_FONT,          AMSK_STYLE },
 { "font",          MARKUP_FONT,         MUTYPE_FONT,
                    AMSK_COLOR|AMSK_FACE|AMSK_SIZE   },
 { "h1",            MARKUP_H1,           MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
 { "h2",            MARKUP_H2,           MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
 { "h3",            MARKUP_H3,           MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
 { "h4",            MARKUP_H4,           MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
 { "h5",            MARKUP_H5,           MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
 { "h6",            MARKUP_H6,           MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
                    AMSK_COLOR|AMSK_FACE|AMSK_SIZE|AMSK_STYLE },
 { "footer",        MARKUP_HTML5_FOOTER, MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "h1",            MARKUP_H1,           MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "h2",            MARKUP_H2,           MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "h3",            MARKUP_H3,           MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "h4",            MARKUP_H4,           MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "h5",            MARKUP_H5,           MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "h6",            MARKUP_H6,           MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "header",        MARKUP_HTML5_HEADER, MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "hr",            MARKUP_HR,           MUTYPE_SINGLE,
                    AMSK_ALIGN|AMSK_COLOR|AMSK_SIZE|AMSK_WIDTH|AMSK_CLASS  },
 { "i",             MARKUP_I,            MUTYPE_FONT,          0  },
                    AMSK_ALIGN|AMSK_COLOR|AMSK_SIZE|AMSK_WIDTH|
                    AMSK_STYLE|AMSK_CLASS  },
 { "i",             MARKUP_I,            MUTYPE_FONT,          AMSK_STYLE },
 { "img",           MARKUP_IMG,          MUTYPE_SINGLE,
                    AMSK_ALIGN|AMSK_ALT|AMSK_BORDER|AMSK_HEIGHT|
                    AMSK_HSPACE|AMSK_SRC|AMSK_VSPACE|AMSK_WIDTH  },
 { "kbd",           MARKUP_KBD,          MUTYPE_FONT,          0  },
                    AMSK_HSPACE|AMSK_SRC|AMSK_VSPACE|AMSK_WIDTH|AMSK_STYLE  },
 { "ins",           MARKUP_INS,          MUTYPE_FONT,          AMSK_STYLE },
 { "kbd",           MARKUP_KBD,          MUTYPE_FONT,          AMSK_STYLE },
 { "li",            MARKUP_LI,           MUTYPE_LI,
                    AMSK_TYPE|AMSK_VALUE  },
                    AMSK_TYPE|AMSK_VALUE|AMSK_STYLE  },
 { "nav",           MARKUP_HTML5_NAV,    MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "nobr",          MARKUP_NOBR,         MUTYPE_FONT,          0  },
 { "nowiki",        MARKUP_NOWIKI,       MUTYPE_SPECIAL,       0  },
 { "ol",            MARKUP_OL,           MUTYPE_LIST,
                    AMSK_START|AMSK_TYPE|AMSK_COMPACT  },
 { "p",             MARKUP_P,            MUTYPE_BLOCK,         AMSK_ALIGN|AMSK_CLASS  },
 { "pre",           MARKUP_PRE,          MUTYPE_BLOCK,         0  },
 { "s",             MARKUP_S,            MUTYPE_FONT,          0  },
 { "samp",          MARKUP_SAMP,         MUTYPE_FONT,          0  },
 { "small",         MARKUP_SMALL,        MUTYPE_FONT,          0  },
 { "strike",        MARKUP_STRIKE,       MUTYPE_FONT,          0  },
 { "strong",        MARKUP_STRONG,       MUTYPE_FONT,          0  },
 { "sub",           MARKUP_SUB,          MUTYPE_FONT,          0  },
 { "sup",           MARKUP_SUP,          MUTYPE_FONT,          0  },
                    AMSK_START|AMSK_TYPE|AMSK_COMPACT|AMSK_STYLE  },
 { "p",             MARKUP_P,            MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "pre",           MARKUP_PRE,          MUTYPE_BLOCK,         AMSK_STYLE },
 { "s",             MARKUP_S,            MUTYPE_FONT,          AMSK_STYLE },
 { "samp",          MARKUP_SAMP,         MUTYPE_FONT,          AMSK_STYLE },
 { "section",       MARKUP_HTML5_SECTION, MUTYPE_BLOCK,
                    AMSK_ID|AMSK_CLASS|AMSK_STYLE },
 { "small",         MARKUP_SMALL,        MUTYPE_FONT,          AMSK_STYLE },
 { "span",          MARKUP_SPAN,         MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "strike",        MARKUP_STRIKE,       MUTYPE_FONT,          AMSK_STYLE },
 { "strong",        MARKUP_STRONG,       MUTYPE_FONT,          AMSK_STYLE },
 { "sub",           MARKUP_SUB,          MUTYPE_FONT,          AMSK_STYLE },
 { "summary",       MARKUP_SUMMARY,      MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "sup",           MARKUP_SUP,          MUTYPE_FONT,          AMSK_STYLE },
 { "table",         MARKUP_TABLE,        MUTYPE_TABLE,
                    AMSK_ALIGN|AMSK_BGCOLOR|AMSK_BORDER|AMSK_CELLPADDING|
                    AMSK_CELLSPACING|AMSK_HSPACE|AMSK_VSPACE|AMSK_CLASS  },
                    AMSK_CELLSPACING|AMSK_HSPACE|AMSK_VSPACE|AMSK_CLASS|
                    AMSK_STYLE  },
 { "tbody",         MARKUP_TBODY,        MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "td",            MARKUP_TD,           MUTYPE_TD,
                    AMSK_ALIGN|AMSK_BGCOLOR|AMSK_COLSPAN|
                    AMSK_ROWSPAN|AMSK_VALIGN|AMSK_CLASS  },
                    AMSK_ROWSPAN|AMSK_VALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "tfoot",         MARKUP_TFOOT,        MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "th",            MARKUP_TH,           MUTYPE_TD,
                    AMSK_ALIGN|AMSK_BGCOLOR|AMSK_COLSPAN|
                    AMSK_ROWSPAN|AMSK_VALIGN|AMSK_CLASS  },
                    AMSK_ROWSPAN|AMSK_VALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "thead",         MARKUP_THEAD,        MUTYPE_BLOCK,
                    AMSK_ALIGN|AMSK_CLASS|AMSK_STYLE  },
 { "title",         MARKUP_TITLE,        MUTYPE_BLOCK, 0 },
 { "tr",            MARKUP_TR,           MUTYPE_TR,
                    AMSK_ALIGN|AMSK_BGCOLOR||AMSK_VALIGN|AMSK_CLASS  },
 { "tt",            MARKUP_TT,           MUTYPE_FONT,          0  },
 { "u",             MARKUP_U,            MUTYPE_FONT,          0  },
                    AMSK_ALIGN|AMSK_BGCOLOR|AMSK_VALIGN|AMSK_CLASS|AMSK_STYLE },
 { "tt",            MARKUP_TT,           MUTYPE_FONT,          AMSK_STYLE },
 { "u",             MARKUP_U,            MUTYPE_FONT,          AMSK_STYLE },
 { "ul",            MARKUP_UL,           MUTYPE_LIST,
                    AMSK_TYPE|AMSK_COMPACT  },
 { "var",           MARKUP_VAR,          MUTYPE_FONT,          0  },
 { "verbatim",      MARKUP_VERBATIM,     MUTYPE_SPECIAL,       AMSK_ID|AMSK_TYPE },
                    AMSK_TYPE|AMSK_COMPACT|AMSK_STYLE  },
 { "var",           MARKUP_VAR,          MUTYPE_FONT,          AMSK_STYLE },
 { "verbatim",      MARKUP_VERBATIM,     MUTYPE_SPECIAL,
                    AMSK_ID|AMSK_TYPE },
};

void show_allowed_wiki_markup( void ){
  int i; /* loop over allowedAttr */
  for( i=1 ; i<=count(aMarkup) - 1 ; i++ ){
    @ &lt;%s(aMarkup[i].zName)&gt;
  }
}

/*
** Use binary search to locate a tag in the aMarkup[] table.
*/
static int findTag(const char *z){
  int i, c, first, last;
  first = 1;
  last = sizeof(aMarkup)/sizeof(aMarkup[0]) - 1;
  last = count(aMarkup) - 1;
  while( first<=last ){
    i = (first+last)/2;
    c = strcmp(aMarkup[i].zName, z);
    c = fossil_strcmp(aMarkup[i].zName, z);
    if( c==0 ){
      assert( aMarkup[i].iCode==i );
      return i;
    }else if( c<0 ){
      first = i+1;
    }else{
      last = i-1;
    }
  }
  return MARKUP_INVALID;
}

/*
** Token types
*/
#define TOKEN_MARKUP        1    /* <...> */
#define TOKEN_CHARACTER     2    /* "&" or "<" not part of markup */
#define TOKEN_LINK          3    /* [...] */
#define TOKEN_PARAGRAPH     4    /* blank lines */
#define TOKEN_NEWLINE       5    /* A single "\n" */
#define TOKEN_BUL_LI        6    /*  "  *  " */
#define TOKEN_NUM_LI        7    /*  "  #  " */
#define TOKEN_ENUM          8    /*  "  \(?\d+[.)]?  " */
#define TOKEN_INDENT        9    /*  "   " */
#define TOKEN_RAW           10   /* Output exactly (used when wiki-use-html==1) */
#define TOKEN_TEXT          11   /* None of the above */
#define TOKEN_MARKUP        1  /* <...> */
#define TOKEN_CHARACTER     2  /* "&" or "<" not part of markup */
#define TOKEN_LINK          3  /* [...] */
#define TOKEN_PARAGRAPH     4  /* blank lines */
#define TOKEN_NEWLINE       5  /* A single "\n" */
#define TOKEN_BUL_LI        6  /*  "  *  " */
#define TOKEN_NUM_LI        7  /*  "  #  " */
#define TOKEN_ENUM          8  /*  "  \(?\d+[.)]?  " */
#define TOKEN_INDENT        9  /*  "   " */
#define TOKEN_RAW           10 /* Output exactly (used when wiki-use-html==1) */
#define TOKEN_TEXT          11 /* None of the above */

/*
** State flags
** State flags.  Save the lower 16 bits for the WIKI_* flags.
*/
#define AT_NEWLINE          0x001  /* At start of a line */
#define AT_PARAGRAPH        0x002  /* At start of a paragraph */
#define ALLOW_WIKI          0x004  /* Allow wiki markup */
#define FONT_MARKUP_ONLY    0x008  /* Only allow MUTYPE_FONT markup */
#define INLINE_MARKUP_ONLY  0x010  /* Allow only "inline" markup */
#define IN_LIST             0x020  /* Within wiki <ul> or <ol> */
#define AT_NEWLINE          0x0010000  /* At start of a line */
#define AT_PARAGRAPH        0x0020000  /* At start of a paragraph */
#define ALLOW_WIKI          0x0040000  /* Allow wiki markup */
#define ALLOW_LINKS         0x0080000  /* Allow [...] hyperlinks */
#define FONT_MARKUP_ONLY    0x0100000  /* Only allow MUTYPE_FONT markup */
#define INLINE_MARKUP_ONLY  0x0200000  /* Allow only "inline" markup */
#define IN_LIST             0x0400000  /* Within wiki <ul> or <ol> */
#define WIKI_USE_HTML       0x040  /* wiki-use-html option = on */

/*
** Current state of the rendering engine
*/
typedef struct Renderer Renderer;
struct Renderer {
  Blob *pOut;                 /* Output appended to this blob */
  int state;                  /* Flag that govern rendering */
  unsigned renderFlags;       /* Flags from the client */
  int wikiList;               /* Current wiki list type */
  int inVerbatim;             /* True in <verbatim> mode */
  int preVerbState;           /* Value of state prior to verbatim */
  int wantAutoParagraph;      /* True if a <p> is desired */
  int inAutoParagraph;        /* True if within an automatic paragraph */
  int pikchrHtmlFlags;        /* Flags for pikchr_to_html() */
  const char *zVerbatimId;    /* The id= attribute of <verbatim> */
  int nStack;                 /* Number of elements on the stack */
  int nAlloc;                 /* Space allocated for aStack */
  struct sStack {
    short iCode;                 /* Markup code */
    short allowWiki;             /* ALLOW_WIKI if wiki allowed before tag */
    const char *zId;             /* ID attribute or NULL */
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*/
static int wikiUsesHtml(void){
  static int r = -1;
  if( r<0 ) r = db_get_boolean("wiki-use-html", 0);
  return r;
}


/*
** z points to a "<" character.  Check to see if this is the start of
** a valid markup.  If it is, return the total number of characters in
** the markup including the initial "<" and the terminating ">".  If
** it is not well-formed markup, return 0.
*/
static int markupLength(const char *z){
int html_tag_length(const char *z){
  int n = 1;
  int inparen = 0;
  int c;
  if( z[n]=='/' ){ n++; }
  if( !isalpha(z[n]) ) return 0;
  while( isalnum(z[n]) ){ n++; }
  if( (c = z[n])!='>' && !isspace(c) ) return 0;
  if( !fossil_isalpha(z[n]) ) return 0;
  while( fossil_isalnum(z[n]) || z[n]=='-' ){ n++; }
  c = z[n];
  if( c=='/' && z[n+1]=='>' ){ return n+2; }
  if( c!='>' && !fossil_isspace(c) ) return 0;
  while( (c = z[n])!=0 && (c!='>' || inparen) ){
    if( c==inparen ){
      inparen = 0;
    }else if( c=='"' || c=='\'' ){
    }else if( inparen==0 && (c=='"' || c=='\'') ){
      inparen = c;
    }
    n++;
  }
  if( z[n]!='>' ) return 0;
  return n+1;
}

/*
** z points to a "\n" character.  Check to see if this newline is
** followed by one or more blank lines.  If it is, return the number
** of characters through the closing "\n".  If not, return 0.
*/
static int paragraphBreakLength(const char *z){
  int i, n;
  int nNewline = 1;
  for(i=1, n=0; isspace(z[i]); i++){
  for(i=1, n=0; fossil_isspace(z[i]); i++){
    if( z[i]=='\n' ){
      nNewline++;
      n = i;
    }
  }
  if( nNewline>=2 ){
    return n+1;
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** Interesting characters are:
**
**      <
**      &
**      \n
**      [
**
** The "[" is only considered if flags contain ALLOW_LINKS or ALLOW_WIKI.
** The "[" and "\n" are only considered interesting if the "useWiki"
** The "\n" is only considered interesting if the flags constains ALLOW_WIKI.
** flag is set.
*/
static int textLength(const char *z, int useWiki){
  int n = 0;
  int c;
static int textLength(const char *z, int flags){
  const char *zReject;
  if( flags & ALLOW_WIKI ){
    zReject = "<&[\n";
  }else if( flags & ALLOW_LINKS ){
    zReject = "<&[";
  while( (c = z[0])!=0 && c!='<' && c!='&' &&
               (useWiki==0 || (c!='[' && c!='\n')) ){
    n++;
    z++;
  }else{
    zReject = "<&";
  }
  return n;
  return strcspn(z, zReject);
}

/*
** Return true if z[] begins with an HTML character element.
*/
static int isElement(const char *z){
  int i;
  assert( z[0]=='&' );
  if( z[1]=='#' ){
    for(i=2; isdigit(z[i]); i++){}
    for(i=2; fossil_isdigit(z[i]); i++){}
    return i>2 && z[i]==';';
  }else{
    for(i=1; isalpha(z[i]); i++){}
    for(i=1; fossil_isalpha(z[i]); i++){}
    return i>1 && z[i]==';';
  }
}

/*
** Check to see if the z[] string is the beginning of a wiki list item.
** If it is, return the length of the bullet text.  Otherwise return 0.
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  n++;
  i = 0;
  while( z[n]==' ' || z[n]=='\t' ){
    if( z[n]=='\t' ) i++;
    i++;
    n++;
  }
  if( i<2 || isspace(z[n]) ) return 0;
  if( i<2 || fossil_isspace(z[n]) ) return 0;
  return n;
}

/*
** Check to see if the z[] string is the beginning of a enumeration value.
** Check to see if the z[] string is the beginning of an enumeration value.
** If it is, return the length of the bullet text.  Otherwise return 0.
**
** Syntax:
**    *  a tab or two or more spaces
**    *  one or more digits
**    *  optional "."
**    *  another tab or two ore more spaces.
**
*/
static int enumLength(const char *z){
  int i, n;
  n = 0;
  i = 0;
  while( z[n]==' ' || z[n]=='\t' ){
    if( z[n]=='\t' ) i++;
    i++;
    n++;
  }
  if( i<2 ) return 0;
  for(i=0; isdigit(z[n]); i++, n++){}
  for(i=0; fossil_isdigit(z[n]); i++, n++){}
  if( i==0 ) return 0;
  if( z[n]=='.' ){
    n++;
  }
  i = 0;
  while( z[n]==' ' || z[n]=='\t' ){
    if( z[n]=='\t' ) i++;
    i++;
    n++;
  }
  if( i<2 || isspace(z[n]) ) return 0;
  if( i<2 || fossil_isspace(z[n]) ) return 0;
  return n;
}

/*
** Check to see if the z[] string is the beginning of an indented
** paragraph.  If it is, return the length of the indent.  Otherwise
** return 0.
*/
static int indentLength(const char *z){
  int i, n;
  n = 0;
  i = 0;
  while( z[n]==' ' || z[n]=='\t' ){
    if( z[n]=='\t' ) i++;
    i++;
    n++;
  }
  if( i<2 || isspace(z[n]) ) return 0;
  if( i<2 || fossil_isspace(z[n]) ) return 0;
  return n;
}

/*
** Check to see if the z[] string is a wiki hyperlink.  If it is,
** return the length of the hyperlink.  Otherwise return 0.
*/
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**
** z points to the start of a token.  Return the number of
** characters in that token.  Write the token type into *pTokenType.
*/
static int nextWikiToken(const char *z, Renderer *p, int *pTokenType){
  int n;
  if( z[0]=='<' ){
    n = markupLength(z);
    n = html_tag_length(z);
    if( n>0 ){
      *pTokenType = TOKEN_MARKUP;
      return n;
    }else{
      *pTokenType = TOKEN_CHARACTER;
      return 1;
    }
  }
  if( z[0]=='&' && (p->inVerbatim || !isElement(z)) ){
    *pTokenType = TOKEN_CHARACTER;
    return 1;
  }
  if( (p->state & ALLOW_WIKI)!=0 ){
    if( z[0]=='\n' ){
      n = paragraphBreakLength(z);
      if( n>0 ){
        *pTokenType = TOKEN_PARAGRAPH;
        return n;
      }else if( isspace(z[1]) ){
      }else{
        *pTokenType = TOKEN_NEWLINE;
        return 1;
      }
    }
    if( (p->state & AT_NEWLINE)!=0 && isspace(z[0]) ){
    if( (p->state & AT_NEWLINE)!=0 && fossil_isspace(z[0]) ){
      n = listItemLength(z, '*');
      if( n>0 ){
        *pTokenType = TOKEN_BUL_LI;
        return n;
      }
      n = listItemLength(z, '#');
      if( n>0 ){
        *pTokenType = TOKEN_NUM_LI;
        return n;
      }
      n = enumLength(z);
      if( n>0 ){
        *pTokenType = TOKEN_ENUM;
        return n;
      }
    }
    if( (p->state & AT_PARAGRAPH)!=0 && isspace(z[0]) ){
    if( (p->state & AT_PARAGRAPH)!=0 && fossil_isspace(z[0]) ){
      n = indentLength(z);
      if( n>0 ){
        *pTokenType = TOKEN_INDENT;
        return n;
      }
    }
    if( z[0]=='[' && (n = linkLength(z))>0 ){
      *pTokenType = TOKEN_LINK;
      return n;
    }
  }else if( (p->state & ALLOW_LINKS)!=0 && z[0]=='[' && (n = linkLength(z))>0 ){
    *pTokenType = TOKEN_LINK;
    return n;
  }
  *pTokenType = TOKEN_TEXT;
  return 1 + textLength(z+1, p->state & ALLOW_WIKI);
  return 1 + textLength(z+1, p->state);
}

/*
** Parse only Wiki links, return everything else as TOKEN_RAW.
**
** z points to the start of a token.  Return the number of
** characters in that token. Write the token type into *pTokenType.
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/*
** z[] is an HTML markup element - something that begins with '<'.
** Parse this element into the p structure.
**
** The content of z[] might be modified by converting characters
** to lowercase and by inserting some "\000" characters.
*/
static void parseMarkup(ParsedMarkup *p, char *z){
static int parseMarkup(ParsedMarkup *p, char *z){
  int i, j, c;
  int iACode;
  char *zValue;
  int seen = 0;
  char zTag[100];

  if( z[1]=='/' ){
    p->endTag = 1;
    i = 2;
  }else{
    p->endTag = 0;
    i = 1;
  }
  j = 0;
  while( isalnum(z[i]) ){
    if( j<sizeof(zTag)-1 ) zTag[j++] = tolower(z[i]);
  while( fossil_isalnum(z[i]) ){
    if( j<(int)sizeof(zTag)-1 ) zTag[j++] = fossil_tolower(z[i]);
    i++;
  }
  zTag[j] = 0;
  p->iCode = findTag(zTag);
  p->iType = aMarkup[p->iCode].iType;
  p->nAttr = 0;
  c = 0;
  if( z[i]=='-' ){
    p->aAttr[0].iACode = iACode = ATTR_ID;
    i++;
    p->aAttr[0].zValue = &z[i];
    while( fossil_isalnum(z[i]) ){ i++; }
    p->aAttr[0].cTerm = c = z[i];
    z[i++] = 0;
    p->nAttr = 1;
    if( c=='>' ) return 0;
  }
  while( isspace(z[i]) ){ i++; }
  while( p->nAttr<8 && isalpha(z[i]) ){
    int attrOk;    /* True to preserver attribute.  False to ignore it */
  while( fossil_isspace(z[i]) ){ i++; }
  while( c!='>' && p->nAttr<8 && fossil_isalpha(z[i]) ){
    int attrOk;    /* True to preserve attribute.  False to ignore it */
    j = 0;
    while( isalnum(z[i]) ){
      if( j<sizeof(zTag)-1 ) zTag[j++] = tolower(z[i]);
    while( fossil_isalnum(z[i]) ){
      if( j<(int)sizeof(zTag)-1 ) zTag[j++] = fossil_tolower(z[i]);
      i++;
    }
    zTag[j] = 0;
    p->aAttr[p->nAttr].iACode = iACode = findAttr(zTag);
    attrOk = iACode!=0 && (seen & aAttribute[iACode].iMask)==0;
    while( isspace(z[i]) ){ z++; }
    while( fossil_isspace(z[i]) ){ z++; }
    if( z[i]!='=' ){
      p->aAttr[p->nAttr].zValue = 0;
      p->aAttr[p->nAttr].cTerm = 0;
      c = 0;
    }else{
      i++;
      while( isspace(z[i]) ){ z++; }
      while( fossil_isspace(z[i]) ){ z++; }
      if( z[i]=='"' ){
        i++;
        zValue = &z[i];
        while( z[i] && z[i]!='"' ){ i++; }
      }else if( z[i]=='\'' ){
        i++;
        zValue = &z[i];
        while( z[i] && z[i]!='\'' ){ i++; }
      }else{
        zValue = &z[i];
        while( !isspace(z[i]) && z[i]!='>' ){ z++; }
        while( !fossil_isspace(z[i]) && z[i]!='>' ){
          if( z[i]=='\'' || z[i]=='"' ) attrOk = 0;
          i++;
        }
      }
      if( attrOk ){
        p->aAttr[p->nAttr].zValue = zValue;
        p->aAttr[p->nAttr].cTerm = c = z[i];
        if( z[i]==0 ){
          i--;
        }else{
        z[i] = 0;
          z[i] = 0;
        }
      }
      i++;
    }
    if( attrOk ){
      seen |= aAttribute[iACode].iMask;
      p->nAttr++;
    }
    while( isspace(z[i]) ){ i++; }
    if( z[i]=='>' || (z[i]=='/' && z[i+1]=='>') ) break;
    while( fossil_isspace(z[i]) ){ i++; }
    if( z[i]==0 || z[i]=='>' || (z[i]=='/' && z[i+1]=='>') ) break;
  }
  return seen;
}

/*
** Render markup on the given blob.
*/
static void renderMarkup(Blob *pOut, ParsedMarkup *p){
  int i;
  if( p->endTag ){
    blob_appendf(pOut, "</%s>", aMarkup[p->iCode].zName);
  }else{
    blob_appendf(pOut, "<%s", aMarkup[p->iCode].zName);
    for(i=0; i<p->nAttr; i++){
      blob_appendf(pOut, " %s", aAttribute[p->aAttr[i].iACode].zName);
      if( p->aAttr[i].zValue ){
        const char *zVal = p->aAttr[i].zValue;
        if( p->aAttr[i].iACode==ATTR_SRC && zVal[0]=='/' ){
          blob_appendf(pOut, "=\"%R%s\"", zVal);
        }else{
        blob_appendf(pOut, "=\"%s\"", p->aAttr[i].zValue);
      }
    }
    blob_append(pOut, ">", 1);
          blob_appendf(pOut, "=\"%s\"", zVal);
        }
      }
    }
    if (p->iType & MUTYPE_SINGLE){
      blob_append_string(pOut, " /");
    }
    blob_append_char(pOut, '>');
  }
}

/*
** When the markup was parsed, some "\000" may have been inserted.
** This routine restores to those "\000" values back to their
** original content.
*/
static void unparseMarkup(ParsedMarkup *p){
  int i, n;
  for(i=0; i<p->nAttr; i++){
    char *z = p->aAttr[i].zValue;
    if( z==0 ) continue;
    if( p->aAttr[i].cTerm ){
    n = strlen(z);
    z[n] = p->aAttr[i].cTerm;
  }
      n = strlen(z);
      z[n] = p->aAttr[i].cTerm;
    }
  }
}

/*
** Return the value of attribute attrId.  Return NULL if there is no
** ID attribute.
*/
static const char *attributeValue(ParsedMarkup *p, int attrId){
  int i;
  for(i=0; i<p->nAttr; i++){
    if( p->aAttr[i].iACode==attrId ){
      return p->aAttr[i].zValue;
    }
  }
  return 0;
}

/*
** Return the ID attribute for markup.  Return NULL if there is no
** ID attribute.
*/
static const char *markupId(ParsedMarkup *p){
  int i;
  for(i=0; i<p->nAttr; i++){
    if( p->aAttr[i].iACode==ATTR_ID ){
      return p->aAttr[i].zValue;
    }
  }
  return 0;
  return attributeValue(p, ATTR_ID);
}

/*
** Check markup pMarkup to see if it is a hyperlink with class "button"
** that is follows by simple text and an </a> only.  Example:
**
**     <a class="button" href="../index.wiki">Index</a>
**
** If the markup matches this pattern, and if the WIKI_BUTTONS flag was
** passed to wiki_convert(), then transform this link into a submenu
** button, skip the text, and set *pN equal to the total length of the
** text through the end of </a> and return true.  If the markup does
** not match or if WIKI_BUTTONS is not set, then make no changes to *pN
** and return false.
*/
static int isButtonHyperlink(
  Renderer *p,              /* Renderer state */
  ParsedMarkup *pMarkup,    /* Potential button markup */
  const char *z,            /* Complete text of Wiki */
  int *pN                   /* Characters of z[] consumed */
){
  const char *zClass;
  const char *zHref;
  char *zTag;
  int i, j;
  if( (p->state & WIKI_BUTTONS)==0 ) return 0;
  zClass = attributeValue(pMarkup, ATTR_CLASS);
  if( zClass==0 ) return 0;
  if( fossil_strcmp(zClass, "button")!=0 ) return 0;
  zHref = attributeValue(pMarkup, ATTR_HREF);
  if( zHref==0 ) return 0;
  i = *pN;
  while( z[i] && z[i]!='<' ){ i++; }
  if( fossil_strnicmp(&z[i], "</a>",4)!=0 ) return 0;
  for(j=*pN; fossil_isspace(z[j]); j++){}
  zTag = mprintf("%.*s", i-j, &z[j]);
  j = (int)strlen(zTag);
  while( j>0 && fossil_isspace(zTag[j-1]) ){ j--; }
  if( j==0 ) return 0;
  style_submenu_element(zTag, "%s", zHref);
  *pN = i+4;
  return 1;
}

/*
** Pop a single element off of the stack.  As the element is popped,
** output its end tag if it is not a </div> tag.
*/
static void popStack(Renderer *p){
  if( p->nStack ){
    int iCode;
    p->nStack--;
    iCode = p->aStack[p->nStack].iCode;
    if( iCode!=MARKUP_DIV && p->pOut ){
    if( (iCode!=MARKUP_DIV || p->aStack[p->nStack].zId==0) && p->pOut ){
      blob_appendf(p->pOut, "</%s>", aMarkup[iCode].zName);
    }
  }
}

/*
** Push a new markup value onto the stack.  Enlarge the stack
** if necessary.
*/
static void pushStackWithId(Renderer *p, int elem, const char *zId, int w){
  if( p->nStack>=p->nAlloc ){
    p->nAlloc = p->nAlloc*2 + 100;
    p->aStack = realloc(p->aStack, p->nAlloc*sizeof(p->aStack[0]));
    p->aStack = fossil_realloc(p->aStack, p->nAlloc*sizeof(p->aStack[0]));
    if( p->aStack==0 ){
      fossil_panic("out of memory");
    }
  }
  p->aStack[p->nStack].iCode = elem;
  p->aStack[p->nStack].zId = zId;
  p->aStack[p->nStack].allowWiki = w;
  p->nStack++;
}
static void pushStack(Renderer *p, int elem){
846
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853

854
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1034
1035
1036
1037
1038
1039

1040
1041
1042
1043
1044
1045
1046
1047







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*/
static int findTagWithId(Renderer *p, int iTag, const char *zId){
  int i;
  assert( zId!=0 );
  for(i=p->nStack-1; i>=0; i--){
    if( p->aStack[i].iCode!=iTag ) continue;
    if( p->aStack[i].zId==0 ) continue;
    if( strcmp(zId, p->aStack[i].zId)!=0 ) continue;
    if( fossil_strcmp(zId, p->aStack[i].zId)!=0 ) continue;
    break;
  }
  return i;
}

/*
** Pop the stack until the top-most element of the stack
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  return p->aStack[i-1].iCode;
}

/*
** Begin a new paragraph if that something that is needed.
*/
static void startAutoParagraph(Renderer *p){
  if( p->wantAutoParagraph==0 ) return;
  if( p->state & WIKI_LINKSONLY ) return;
  if( p->wantAutoParagraph==0 || p->wikiList==MARKUP_OL || p->wikiList==MARKUP_UL ) return;
  blob_appendf(p->pOut, "<p>", -1);
  if( p->wikiList==MARKUP_OL || p->wikiList==MARKUP_UL ) return;
  blob_append_string(p->pOut, "<p>");
  pushStack(p, MARKUP_P);
  p->wantAutoParagraph = 0;
  p->inAutoParagraph = 1;
}

/*
** End a paragraph if we are in one.
*/
static void endAutoParagraph(Renderer *p){
  if( p->inAutoParagraph ){
    popStackToTag(p, MARKUP_P);
    p->inAutoParagraph = 0;
  }
}

/*
** If the input string corresponds to an existing baseline,
** return true.
*/
static int is_valid_uuid(const char *z){
static int is_valid_hname(const char *z){
  int n = strlen(z);
  if( n<4 || n>UUID_SIZE ) return 0;
  if( n<4 || n>HNAME_MAX ) return 0;
  if( !validate16(z, n) ) return 0;
  return 1;
}

/*
** Return TRUE if a hash name corresponds to an artifact in this
** repository.
*/
static int in_this_repo(const char *zUuid){
  static Stmt q;
  int rc;
  int n;
  char zU2[HNAME_MAX+1];
  db_static_prepare(&q,
     "SELECT 1 FROM blob WHERE uuid>=:u AND uuid<:u2"
  );
  db_bind_text(&q, ":u", zUuid);
  n = (int)strlen(zUuid);
  if( n>=(int)sizeof(zU2) ) n = sizeof(zU2)-1;
  memcpy(zU2, zUuid, n);
  zU2[n-1]++;
  zU2[n] = 0;
  db_bind_text(&q, ":u2", zU2);
  rc = db_step(&q);
  db_reset(&q);
  return rc==SQLITE_ROW;
}

/*
** zTarget is guaranteed to be a UUID.  It might be the UUID of a ticket.
** If it is, store in *pClosed a true or false depending on whether or not
** the ticket is closed and return true. If zTarget
** is not the UUID of a ticket, return false.
*/
static int is_ticket(
int is_ticket(
  const char *zTarget,    /* Ticket UUID */
  int *pClosed            /* True if the ticket is closed */
){
  static Stmt q;
  static int once = 1;
  int n;
  int rc;
  char zLower[UUID_SIZE+1];
  char zUpper[UUID_SIZE+1];
  char zLower[HNAME_MAX+1];
  char zUpper[HNAME_MAX+1];
  n = strlen(zTarget);
  memcpy(zLower, zTarget, n+1);
  canonical16(zLower, n+1);
  memcpy(zUpper, zLower, n+1);
  zUpper[n-1]++;
  if( once ){
    const char *zClosedExpr = db_get("ticket-closed-expr", "status='Closed'");
  if( !db_static_stmt_is_init(&q) ){
    char *zClosedExpr = db_get("ticket-closed-expr", "status='Closed'");
    db_static_prepare(&q,
      "SELECT %s FROM ticket "
      "SELECT %z FROM ticket "
      " WHERE tkt_uuid>=:lwr AND tkt_uuid<:upr",
      zClosedExpr
      zClosedExpr /*safe-for-%s*/
    );
    once = 0;
  }
  db_bind_text(&q, ":lwr", zLower);
  db_bind_text(&q, ":upr", zUpper);
  if( db_step(&q)==SQLITE_ROW ){
    rc = 1;
    *pClosed = db_column_int(&q, 0);
  }else{
    rc = 0;
  }
  db_reset(&q);
  return rc;
}

/*
** Return a pointer to the name part of zTarget (skipping the "wiki:" prefix
** if there is one) if zTarget is a valid wiki page name.  Return NULL if
** zTarget names a page that does not exist.
*/
static const char *validWikiPageName(int mFlags, const char *zTarget){
  if( strncmp(zTarget, "wiki:", 5)==0
      && wiki_name_is_wellformed((const unsigned char*)zTarget) ){
    return zTarget+5;
  }
  if( strcmp(zTarget, "Sandbox")==0 ) return zTarget;
  if( wiki_name_is_wellformed((const unsigned char *)zTarget)
   && ((mFlags & WIKI_NOBADLINKS)==0 ||
        db_exists("SELECT 1 FROM tag WHERE tagname GLOB 'wiki-%q'"
                  " AND (SELECT value FROM tagxref WHERE tagid=tag.tagid"
                  " ORDER BY mtime DESC LIMIT 1) > 0", zTarget))
  ){
    return zTarget;
  }
  return 0;
}

static const char *wikiOverrideHash = 0;

/*
** Fossil-wiki hyperlinks to wiki pages should be overridden to the
** hash value supplied.  If the value is NULL, then override is cancelled
** and all overwrites operate normally.
*/
void wiki_hyperlink_override(const char *zUuid){
  wikiOverrideHash = zUuid;
}


/*
** If links to wiki page zTarget should be redirected to some historical
** version of that page, then return the hash of the historical version.
** If no override is required, return NULL.
*/
static const char *wiki_is_overridden(const char *zTarget){
  if( wikiOverrideHash==0 ) return 0;
  /* The override should only happen if the override version is not the
  ** latest version of the wiki page. */
  if( !db_exists(
    "SELECT 1 FROM tag, blob, tagxref AS xA, tagxref AS xB "
    " WHERE tag.tagname GLOB 'wiki-%q*'"
    "   AND blob.uuid GLOB '%q'"
    "   AND xA.tagid=tag.tagid AND xA.rid=blob.rid"
    "   AND xB.tagid=tag.tagid AND xB.mtime>xA.mtime",
    zTarget, wikiOverrideHash
  ) ){
    return 0;
  }
  return wikiOverrideHash;
}

/*
** Resolve a hyperlink.  The zTarget argument is the content of the [...]
** in the wiki.  Append to the output string whatever text is approprate
** in the wiki.  Append to the output string whatever text is appropriate
** for opening the hyperlink.  Write into zClose[0...nClose-1] text that will
** close the markup.
**
** If this routine determines that no hyperlink should be generated, then
** set zClose[0] to 0.
**
** Actually, this routine might or might not append the hyperlink, depending
** on current rendering rules: specifically does the current user have
** "History" permission.
**
**    [http://www.fossil-scm.org/]
**    [https://www.fossil-scm.org/]
**    [ftp://www.fossil-scm.org/]
**    [http://fossil-scm.org/]
**    [https://fossil-scm.org/]
**    [ftp://fossil-scm.org/]
**    [mailto:fossil-users@lists.fossil-scm.org]
**
**    [/path]
**    [/path]        ->  Refers to the root of the Fossil hierarchy, not
**                       the root of the URI domain
**
**    [./relpath]
**
**    [WikiPageName]
**    [../relpath]
**
**    [0123456789abcdef]
**
**    [#fragment]
**
**    [0123456789abcdef]
**
**    [WikiPageName]
**    [wiki:WikiPageName]
**
**    [2010-02-27 07:13]
**
**    [InterMap:Link]  ->  Interwiki link
*/
static void openHyperlink(
  Renderer *p,            /* Rendering context */
  const char *zTarget,    /* Hyperlink traget; text within [...] */
void wiki_resolve_hyperlink(
  Blob *pOut,             /* Write the HTML output here */
  int mFlags,             /* Rendering option flags */
  const char *zTarget,    /* Hyperlink target; text within [...] */
  char *zClose,           /* Write hyperlink closing text here */
  int nClose              /* Bytes available in zClose[] */
  int nClose,             /* Bytes available in zClose[] */
  const char *zOrig,      /* Complete document text */
  const char *zTitle      /* Title of the link */
){
  const char *zTerm = "</a>";
  const char *z;
  char *zExtra = 0;
  const char *zExtraNS = 0;
  char *zRemote = 0;
  assert( nClose>=20 );


  if( zTitle ){
    zExtra = mprintf(" title='%h'", zTitle);
    zExtraNS = zExtra+1;
  }else if( mFlags & WIKI_TARGET_BLANK ){
    zExtra = mprintf(" target='_blank'");
    zExtraNS = zExtra+1;
  }
  assert( nClose>=20 );
  if( strncmp(zTarget, "http:", 5)==0
   || strncmp(zTarget, "https:", 6)==0
   || strncmp(zTarget, "ftp:", 4)==0
   || strncmp(zTarget, "mailto:", 7)==0
  ){
    blob_appendf(p->pOut, "<a href=\"%s\">", zTarget);
    blob_appendf(pOut, "<a href=\"%s\"%s>", zTarget, zExtra);
    /* zTerm = "&#x27FE;</a>"; // doesn't work on windows */
  }else if( zTarget[0]=='/' ){
    if( 1 /* g.okHistory */ ){
      blob_appendf(p->pOut, "<a href=\"%s%h\">", g.zBaseURL, zTarget);
    blob_appendf(pOut, "<a href=\"%R%h\"%s>", zTarget, zExtra);
    }else{
      zTerm = "";
    }
  }else if( zTarget[0]=='.' || zTarget[0]=='#' ){
    if( 1 /* g.okHistory */ ){
      blob_appendf(p->pOut, "<a href=\"%h\">", zTarget);
    }else{
  }else if( zTarget[0]=='.'
         && (zTarget[1]=='/' || (zTarget[1]=='.' && zTarget[2]=='/'))
         && (mFlags & WIKI_LINKSONLY)==0 ){
    blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
  }else if( zTarget[0]=='#' ){
      zTerm = "";
    }
  }else if( is_valid_uuid(zTarget) ){
    blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
  }else if( is_valid_hname(zTarget) ){
    int isClosed = 0;
    const char *zLB = (mFlags & WIKI_NOBRACKET)==0 ? "[" : "";
    if( is_ticket(zTarget, &isClosed) ){
    if( strlen(zTarget)<=HNAME_MAX && is_ticket(zTarget, &isClosed) ){
      /* Special display processing for tickets.  Display the hyperlink
      ** as crossed out if the ticket is closed.
      */
      if( isClosed ){
        if( g.okHistory ){
          blob_appendf(p->pOut,"<a href=\"%s/info/%s\"><s>",
              g.zBaseURL, zTarget
        if( g.perm.Hyperlink ){
          blob_appendf(pOut,
             "%z<span class=\"wikiTagCancelled\">%s",
             xhref(zExtraNS,"%R/info/%s",zTarget), zLB
          );
          zTerm = "</s></a>";
          zTerm = "]</span></a>";
        }else{
          blob_appendf(p->pOut,"<s>");
          zTerm = "</s>";
          blob_appendf(pOut,"<span class=\"wikiTagCancelled\">%s", zLB);
          zTerm = "]</span>";
        }
      }else{
        if( g.okHistory ){
          blob_appendf(p->pOut,"<a href=\"%s/info/%s\">",
              g.zBaseURL, zTarget
        if( g.perm.Hyperlink ){
          blob_appendf(pOut,"%z%s", xhref(zExtraNS,"%R/info/%s", zTarget),zLB);
          zTerm = "]</a>";
        }else{
          blob_appendf(pOut, "%s", zLB);
          zTerm = "]";
        }
      }
    }else if( !in_this_repo(zTarget) ){
          );
        }else{
          zTerm = "";
        }
      }
    }else if( g.okHistory ){
      blob_appendf(p->pOut, "<a href=\"%s/info/%s\">", g.zBaseURL, zTarget);
      if( (mFlags & (WIKI_LINKSONLY|WIKI_NOBADLINKS))!=0 ){
        zTerm = "";
      }else{
        blob_appendf(pOut, "<span class=\"brokenlink\">%s", zLB);
        zTerm = "]</span>";
      }
    }else if( g.perm.Hyperlink ){
      blob_appendf(pOut, "%z%s",xhref(zExtraNS, "%R/info/%s", zTarget), zLB);
      zTerm = "]</a>";
    }else{
      zTerm = "";
    }
    if( zTerm[0]==']' && (mFlags & WIKI_NOBRACKET)!=0 ) zTerm++;
  }else if( (zRemote = interwiki_url(zTarget))!=0 ){
    blob_appendf(pOut, "<a href=\"%z\"%s>", zRemote, zExtra);
    zTerm = "</a>";
  }else if( (z = validWikiPageName(mFlags, zTarget))!=0 ){
    /* The link is to a valid wiki page name */
    const char *zOverride = wiki_is_overridden(zTarget);
    if( zOverride ){
      blob_appendf(pOut, "<a href=\"%R/info/%S\"%s>", zOverride, zExtra);
    }else{
      blob_appendf(pOut, "<a href=\"%R/wiki?name=%T\"%s>", z, zExtra);
    }
  }else if( strlen(zTarget)>=10 && isdigit(zTarget[0]) && zTarget[4]=='-'
  }else if( strlen(zTarget)>=10 && fossil_isdigit(zTarget[0]) && zTarget[4]=='-'
            && db_int(0, "SELECT datetime(%Q) NOT NULL", zTarget) ){
    /* Dates or date-and-times in ISO8610 resolve to a link to the
    ** timeline for that date */
    blob_appendf(p->pOut, "<a href=\"%s/timeline?c=%T\">", g.zBaseURL, zTarget);
  }else if( wiki_name_is_wellformed((const unsigned char *)zTarget) ){
    blob_appendf(p->pOut, "<a href=\"%s/wiki?name=%T\">", g.zBaseURL, zTarget);
    blob_appendf(pOut, "<a href=\"%R/timeline?c=%T\"%s>", zTarget, zExtra);
  }else if( mFlags & WIKI_MARKDOWNLINKS ){
    /* If none of the above, and if rendering links for markdown, then
    ** create a link to the literal text of the target */
    blob_appendf(pOut, "<a href=\"%h\"%s>", zTarget, zExtra);
  }else if( zOrig && zTarget>=&zOrig[2]
        && zTarget[-1]=='[' && !fossil_isspace(zTarget[-2]) ){
    /* If the hyperlink markup is not preceded by whitespace, then it
    ** is probably a C-language subscript or similar, not really a
    ** hyperlink.  Just ignore it. */
    zTerm = "";
  }else if( (mFlags & (WIKI_NOBADLINKS|WIKI_LINKSONLY))!=0 ){
    /* Also ignore the link if various flags are set */
    zTerm = "";
  }else{
    blob_appendf(p->pOut, "[bad-link: %h]", zTarget);
    zTerm = "";
    blob_appendf(pOut, "<span class=\"brokenlink\">[%h]", zTarget);
    zTerm = "</span>";
  }
  if( zExtra ) fossil_free(zExtra);
  assert( strlen(zTerm)<nClose );
  strcpy(zClose, zTerm);
  assert( (int)strlen(zTerm)<nClose );
  sqlite3_snprintf(nClose, zClose, "%s", zTerm);
}

/*
** Check to see if the given parsed markup is the correct
** </verbatim> tag.
*/
static int endVerbatim(Renderer *p, ParsedMarkup *pMarkup){
  char *z;
  assert( p->inVerbatim );
  if( pMarkup->iCode!=MARKUP_VERBATIM ) return 0;
  if( !pMarkup->endTag ) return 0;
  if( p->zVerbatimId==0 ) return 1;
  if( pMarkup->nAttr!=1 ) return 0;
  z = pMarkup->aAttr[0].zValue;
  return strcmp(z, p->zVerbatimId)==0;
  return fossil_strcmp(z, p->zVerbatimId)==0;
}

/*
** z[] points to the text that immediately follows markup of the form:
**
**      <verbatim type='pikchr ...'>
**
** zClass is the argument to "type".  This routine will process the
** Pikchr text through the next matching </verbatim> (or until end-of-file)
** and append the resulting SVG output onto p.  It then returns the
** number of bytes of text processed, including the closing </verbatim>.
*/
static int wiki_process_pikchr(Renderer *p, char *z, const char *zClass){
  ParsedMarkup m;         /* Parsed closing tag */
  int i = 0;              /* For looping over z[] in search of </verbatim> */
  int iRet = 0;           /* Value  to return */
  int atEnd = 0;          /* True if se have found the </verbatim> */
  int nMarkup = 0;        /* Length of a markup we are checking */

  /* Search for the closing </verbatim> tag */
  while( z[i]!=0 ){
    char *zEnd = strchr(z+i, '<');
    if( zEnd==0 ){
      i += (int)strlen(z+i);
      iRet = i;
      break;
    }
    nMarkup = html_tag_length(zEnd);
    if( nMarkup<11 || fossil_strnicmp(zEnd, "</verbatim", 10)!=0 ){
      i = (int)(zEnd - z) + 1;
      continue;
    }
    (void)parseMarkup(&m, z+i);
    atEnd = endVerbatim(p, &m);
    unparseMarkup(&m);
    if( atEnd ){
      iRet = i + nMarkup;
      break;
    }
    i++;
  }

  /* The Pikchr source text should be i character in length and iRet is
  ** i plus the number of bytes in the </verbatim>.  Generate the reply.
  */
  assert( strncmp(zClass,"pikchr",6)==0 );
  zClass += 6;
  while( fossil_isspace(zClass[0]) ) zClass++;
  blob_append(p->pOut, "<p>", 3);
  pikchr_to_html(p->pOut, z, i, zClass, (int)strlen(zClass));
  blob_append(p->pOut, "</p>\n", 5);
  return iRet;
}

/*
** Return the MUTYPE for the top of the stack.
*/
static int stackTopType(Renderer *p){
  if( p->nStack<=0 ) return 0;
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1078
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1084


1085




1086
1087

1088
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** This routine will probably modify the content of z[].
*/
static void wiki_render(Renderer *p, char *z){
  int tokenType;
  ParsedMarkup markup;
  int n;
  int inlineOnly = (p->state & INLINE_MARKUP_ONLY)!=0;
  int wikiHtmlOnly = (p->state & (WIKI_HTMLONLY | WIKI_LINKSONLY))!=0;
  int wikiUseHtml = (p->state & WIKI_USE_HTML)!=0;
  int linksOnly = (p->state & WIKI_LINKSONLY)!=0;
  char *zOrig = z;

  /* Make sure the attribute constants and names still align
  ** following changes in the attribute list. */
  assert( fossil_strcmp(aAttribute[ATTR_WIDTH].zName, "width")==0 );

  while( z[0] ){
    if( wikiUseHtml ){
    if( wikiHtmlOnly ){
      n = nextRawToken(z, p, &tokenType);
    }else{
      n = nextWikiToken(z, p, &tokenType);
    }
    p->state &= ~(AT_NEWLINE|AT_PARAGRAPH);
    switch( tokenType ){
      case TOKEN_PARAGRAPH: {
        if( inlineOnly ){
          /* blob_append(p->pOut, " &para; ", -1); */
          blob_append(p->pOut, " &nbsp;&nbsp; ", -1);
          /* blob_append_string(p->pOut, " &para; "); */
          blob_append_string(p->pOut, " &nbsp;&nbsp; ");
        }else{
          if( p->wikiList ){
            popStackToTag(p, p->wikiList);
            p->wikiList = 0;
          }
          endAutoParagraph(p);
          blob_appendf(p->pOut, "\n\n", 1);
          blob_append_string(p->pOut, "\n\n");
          p->wantAutoParagraph = 1;
        }
        p->state |= AT_PARAGRAPH|AT_NEWLINE;
        break;
      }
      case TOKEN_NEWLINE: {
        if( p->renderFlags & WIKI_NEWLINE ){
          blob_append_string(p->pOut, "<br>\n");
        }else{
        blob_append(p->pOut, "\n", 1);
          blob_append_string(p->pOut, "\n");
        }
        p->state |= AT_NEWLINE;
        break;
      }
      case TOKEN_BUL_LI: {
        if( inlineOnly ){
          blob_append(p->pOut, " &bull; ", -1);
          blob_append_string(p->pOut, " &bull; ");
        }else{
          if( p->wikiList!=MARKUP_UL ){
            if( p->wikiList ){
              popStackToTag(p, p->wikiList);
            }
            endAutoParagraph(p);
            pushStack(p, MARKUP_UL);
            blob_append(p->pOut, "<ul>", 4);
            blob_append_string(p->pOut, "<ul>");
            p->wikiList = MARKUP_UL;
          }
          popStackToTag(p, MARKUP_LI);
          startAutoParagraph(p);
          pushStack(p, MARKUP_LI);
          blob_append(p->pOut, "<li>", 4);
          blob_append_string(p->pOut, "<li>");
        }
        break;
      }
      case TOKEN_NUM_LI: {
        if( inlineOnly ){
          blob_append(p->pOut, " # ", -1);
          blob_append_string(p->pOut, " # ");
        }else{
          if( p->wikiList!=MARKUP_OL ){
            if( p->wikiList ){
              popStackToTag(p, p->wikiList);
            }
            endAutoParagraph(p);
            pushStack(p, MARKUP_OL);
            blob_append(p->pOut, "<ol>", 4);
            blob_append_string(p->pOut, "<ol>");
            p->wikiList = MARKUP_OL;
          }
          popStackToTag(p, MARKUP_LI);
          startAutoParagraph(p);
          pushStack(p, MARKUP_LI);
          blob_append(p->pOut, "<li>", 4);
          blob_append_string(p->pOut, "<li>");
        }
        break;
      }
      case TOKEN_ENUM: {
        if( inlineOnly ){
          blob_appendf(p->pOut, " (%d) ", atoi(z));
        }else{
          if( p->wikiList!=MARKUP_OL ){
            if( p->wikiList ){
              popStackToTag(p, p->wikiList);
            }
            endAutoParagraph(p);
            pushStack(p, MARKUP_OL);
            blob_append(p->pOut, "<ol>", 4);
            blob_append_string(p->pOut, "<ol>");
            p->wikiList = MARKUP_OL;
          }
          popStackToTag(p, MARKUP_LI);
          startAutoParagraph(p);
          pushStack(p, MARKUP_LI);
          blob_appendf(p->pOut, "<li value=\"%d\">", atoi(z));
        }
        break;
      }
      case TOKEN_INDENT: {
        if( !inlineOnly ){
          assert( p->wikiList==0 );
          pushStack(p, MARKUP_BLOCKQUOTE);
          blob_append(p->pOut, "<blockquote>", -1);
          blob_append_string(p->pOut, "<blockquote>");
          p->wantAutoParagraph = 0;
          p->wikiList = MARKUP_BLOCKQUOTE;
        }
        break;
      }
      case TOKEN_CHARACTER: {
        startAutoParagraph(p);
        if( z[0]=='<' ){
          blob_append(p->pOut, "&lt;", 4);
          blob_append_string(p->pOut, "&lt;");
        }else if( z[0]=='&' ){
          blob_append(p->pOut, "&amp;", 5);
          blob_append_string(p->pOut, "&amp;");
        }
        break;
      }
      case TOKEN_LINK: {
        char *zTarget;
        char *zDisplay = 0;
        int i, j;
        int savedState;
        char zClose[20];
        char cS1 = 0;
        int iS1 = 0;

        startAutoParagraph(p);
        zTarget = &z[1];
        for(i=1; z[i] && z[i]!=']'; i++){
          if( z[i]=='|' && zDisplay==0 ){
            zDisplay = &z[i+1];
            for(j=i; j>0 && fossil_isspace(z[j-1]); j--){}
            z[i] = 0;
            for(j=i-1; j>0 && isspace(z[j]); j--){ z[j] = 0; }
            iS1 = j;
            cS1 = z[j];
            z[j] = 0;
          }
        }
        z[i] = 0;
        if( zDisplay==0 ){
          zDisplay = zTarget;
          zDisplay = zTarget + interwiki_removable_prefix(zTarget);
        }else{
          while( isspace(*zDisplay) ) zDisplay++;
          while( fossil_isspace(*zDisplay) ) zDisplay++;
        }
        wiki_resolve_hyperlink(p->pOut, p->state,
        openHyperlink(p, zTarget, zClose, sizeof(zClose));
        savedState = p->state;
        p->state &= ~ALLOW_WIKI;
        p->state |= FONT_MARKUP_ONLY;
        wiki_render(p, zDisplay);
        p->state = savedState;
        blob_append(p->pOut, zClose, -1);
                               zTarget, zClose, sizeof(zClose), zOrig, 0);
        if( linksOnly || zClose[0]==0 || p->inVerbatim ){
          if( cS1 ) z[iS1] = cS1;
          if( zClose[0]!=']' ){
            blob_appendf(p->pOut, "[%h]%s", zTarget, zClose);
          }else{
            blob_appendf(p->pOut, "%h%s", zTarget, zClose);
          }
        }else{
          savedState = p->state;
          p->state &= ~ALLOW_WIKI;
          p->state |= FONT_MARKUP_ONLY;
          wiki_render(p, zDisplay);
          p->state = savedState;
          blob_append(p->pOut, zClose, -1);
        }
        break;
      }
      case TOKEN_TEXT: {
        int i;
        for(i=0; i<n && fossil_isspace(z[i]); i++){}
        startAutoParagraph(p);
        if( i<n ) startAutoParagraph(p);
        blob_append(p->pOut, z, n);
        break;
      }
      case TOKEN_RAW: {
        if( linksOnly ){
          htmlize_to_blob(p->pOut, z, n);
        }else{
        blob_append(p->pOut, z, n);
          blob_append(p->pOut, z, n);
        }
        break;
      }
      case TOKEN_MARKUP: {
        const char *zId;
        int iDiv;
        parseMarkup(&markup, z);
        int mAttr = parseMarkup(&markup, z);

        /* Convert <title> to <h1 align='center'> */
        if( markup.iCode==MARKUP_TITLE && !p->inVerbatim ){
          markup.iCode = MARKUP_H1;
          markup.nAttr = 1;
          markup.aAttr[0].iACode = AMSK_ALIGN;
          markup.aAttr[0].zValue = "center";
          markup.aAttr[0].cTerm = 0;
        }

        /* Markup of the form </div id=ID> where there is a matching
        ** ID somewhere on the stack.  Exit the verbatim if were are in
        ** it.  Pop the stack up to the matching <div>.  Discard the
        ** ID somewhere on the stack.  Exit any contained verbatim.
        ** Pop the stack up to the matching <div>.  Discard the </div>
        ** </div>
        */
        if( markup.iCode==MARKUP_DIV && markup.endTag &&
             (zId = markupId(&markup))!=0 &&
             (iDiv = findTagWithId(p, MARKUP_DIV, zId))>=0
        ){
          if( p->inVerbatim ){
            p->inVerbatim = 0;
            p->state = p->preVerbState;
            blob_append(p->pOut, "</pre>", 6);
            blob_append_string(p->pOut, "</pre>");
          }
          while( p->nStack>iDiv+1 ) popStack(p);
          if( p->aStack[iDiv].allowWiki ){
            p->state |= ALLOW_WIKI;
          }else{
            p->state &= ~ALLOW_WIKI;
          }
          assert( p->nStack==iDiv+1 );
          p->nStack--;
        }else

        /* If within <verbatim id=ID> ignore everything other than
        ** </verbatim id=ID> and the </dev id=ID2> above.
        */
        if( p->inVerbatim ){
          if( endVerbatim(p, &markup) ){
            p->inVerbatim = 0;
            p->state = p->preVerbState;
            blob_append(p->pOut, "</pre>", 6);
            blob_append_string(p->pOut, "</pre>");
          }else{
            unparseMarkup(&markup);
            blob_append(p->pOut, "&lt;", 4);
            blob_append_string(p->pOut, "&lt;");
            n = 1;
          }
        }else

        /* Render invalid markup literally.  The markup appears in the
        ** final output as plain text.
        */
        if( markup.iCode==MARKUP_INVALID ){
          unparseMarkup(&markup);
          startAutoParagraph(p);
          blob_append(p->pOut, "&lt;", 4);
          blob_append_string(p->pOut, "&lt;");
          n = 1;
        }else

        /* If the markup is not font-change markup ignore it if the
        ** font-change-only flag is set.
        */
        if( (markup.iType&MUTYPE_FONT)==0 && (p->state & FONT_MARKUP_ONLY)!=0 ){
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        /* Generate end-tags */
        if( markup.endTag ){
          popStackToTag(p, markup.iCode);
        }else

        /* Push <div> markup onto the stack together with the id=ID attribute.
        */
        if( markup.iCode==MARKUP_DIV ){
        if( markup.iCode==MARKUP_DIV && (mAttr & ATTR_ID)!=0 ){
          pushStackWithId(p, markup.iCode, markupId(&markup),
                          (p->state & ALLOW_WIKI)!=0);
        }else

        /* Enter <verbatim> processing.  With verbatim enabled, all other
        ** markup other than the corresponding end-tag with the same ID is
        ** ignored.
        */
        if( markup.iCode==MARKUP_VERBATIM ){
          int vAttrIdx, vAttrDidAppend=0;
          int ii; //, vAttrDidAppend=0;
          const char *zClass = 0;
          p->zVerbatimId = 0;
          p->inVerbatim = 1;
          p->preVerbState = p->state;
          p->state &= ~ALLOW_WIKI;
          for (vAttrIdx = 0; vAttrIdx < markup.nAttr; vAttrIdx++){
            if( markup.aAttr[vAttrIdx].iACode == ATTR_ID ){
              p->zVerbatimId = markup.aAttr[0].zValue;
            }else if( markup.aAttr[vAttrIdx].iACode == ATTR_TYPE ){
          for(ii=0; ii<markup.nAttr; ii++){
            if( markup.aAttr[ii].iACode == ATTR_ID ){
              p->zVerbatimId = markup.aAttr[ii].zValue;
            }else if( markup.aAttr[ii].iACode==ATTR_TYPE ){
              zClass = markup.aAttr[ii].zValue;
            }else if( markup.aAttr[ii].iACode==ATTR_LINKS
              blob_appendf(p->pOut, "<pre name='code' class='%s'>",
                markup.aAttr[vAttrIdx].zValue);
                   && !is_false(markup.aAttr[ii].zValue) ){
              vAttrDidAppend=1;
              p->state |= ALLOW_LINKS;
            }
          }
          endAutoParagraph(p);
          if( !vAttrDidAppend )
            blob_append(p->pOut, "<pre class='verbatim'>",-1);
          if( zClass==0 ){
            blob_append_string(p->pOut, "<pre class='verbatim'>");
          }else if( strncmp(zClass,"pikchr",6)==0 &&
                    (fossil_isspace(zClass[6]) || zClass[6]==0) ){
            n += wiki_process_pikchr(p, z+n, zClass);
            p->inVerbatim = 0;
            p->state = p->preVerbState;
          }else{
            blob_appendf(p->pOut, "<pre name='code' class='%h'>",
               zClass);
          }
          p->wantAutoParagraph = 0;
        }else
        if( markup.iType==MUTYPE_LI ){
          if( backupToType(p, MUTYPE_LIST)==0 ){
            endAutoParagraph(p);
            pushStack(p, MARKUP_UL);
            blob_append(p->pOut, "<ul>", 4);
            blob_append_string(p->pOut, "<ul>");
          }
          pushStack(p, MARKUP_LI);
          renderMarkup(p->pOut, &markup);
        }else
        if( markup.iType==MUTYPE_TR ){
          if( backupToType(p, MUTYPE_TABLE) ){
            pushStack(p, MARKUP_TR);
            renderMarkup(p->pOut, &markup);
          }
        }else
        if( markup.iType==MUTYPE_TD ){
          if( backupToType(p, MUTYPE_TABLE|MUTYPE_TR) ){
            if( stackTopType(p)==MUTYPE_TABLE ){
              pushStack(p, MARKUP_TR);
              blob_append(p->pOut, "<tr>", 4);
              blob_append_string(p->pOut, "<tr>");
            }
            p->wantAutoParagraph = 0;
            pushStack(p, markup.iCode);
            renderMarkup(p->pOut, &markup);
          }
        }else
        if( markup.iType==MUTYPE_HYPERLINK ){
          if( !isButtonHyperlink(p, &markup, z, &n) ){
          popStackToTag(p, markup.iCode);
          startAutoParagraph(p);
          renderMarkup(p->pOut, &markup);
          pushStack(p, markup.iCode);
            popStackToTag(p, markup.iCode);
            startAutoParagraph(p);
            renderMarkup(p->pOut, &markup);
            pushStack(p, markup.iCode);
          }
        }else
        {
          if( markup.iType==MUTYPE_FONT ){
            startAutoParagraph(p);
          }else if( markup.iType==MUTYPE_BLOCK ){
          }else if( markup.iType==MUTYPE_BLOCK || markup.iType==MUTYPE_LIST ){
            p->wantAutoParagraph = 0;
          }
          if(   markup.iCode==MARKUP_HR
             || markup.iCode==MARKUP_H1
             || markup.iCode==MARKUP_H2
             || markup.iCode==MARKUP_H3
             || markup.iCode==MARKUP_H4
             || markup.iCode==MARKUP_H5
             || markup.iCode==MARKUP_P
          ){
            endAutoParagraph(p);
          }
          if( (markup.iType & MUTYPE_STACK )!=0 ){
            pushStack(p, markup.iCode);
          }
          renderMarkup(p->pOut, &markup);
        }
        break;
      }
    }
    z += n;
  }
}

/*
** Skip over the UTF-8 Byte-Order-Mark that some broken Windows
** tools add to the beginning of text files.
*/
char *skip_bom(char *z){
  static const char bom[] = { 0xEF, 0xBB, 0xBF };
  if( z && memcmp(z, bom, 3)==0 ) z += 3;
  return z;
}

/*
** Transform the text in the pIn blob.  Write the results
** into the pOut blob.  The pOut blob should already be
** initialized.  The output is merely appended to pOut.
** If pOut is NULL, then the output is appended to the CGI
** reply.
*/
void wiki_convert(Blob *pIn, Blob *pOut, int flags){
  char *z;
  Renderer renderer;

  memset(&renderer, 0, sizeof(renderer));
  renderer.renderFlags = flags;
  renderer.state = ALLOW_WIKI|AT_NEWLINE|AT_PARAGRAPH;
  renderer.state = ALLOW_WIKI|AT_NEWLINE|AT_PARAGRAPH|flags;
  if( flags & WIKI_NOBLOCK ){
    renderer.state |= INLINE_MARKUP_ONLY;
  }
  if( flags & WIKI_INLINE ){
    renderer.wantAutoParagraph = 0;
  }else{
    renderer.wantAutoParagraph = 1;
  }
  if( wikiUsesHtml() ){
    renderer.state |= WIKI_USE_HTML;
    renderer.state |= WIKI_HTMLONLY;
  }
  if( pOut ){
    renderer.pOut = pOut;
  }else{
    renderer.pOut = cgi_output_blob();
  }

  z = skip_bom(blob_str(pIn));
  wiki_render(&renderer, z);
  blob_to_utf8_no_bom(pIn, 0);
  wiki_render(&renderer, blob_str(pIn));
  endAutoParagraph(&renderer);
  while( renderer.nStack ){
    popStack(&renderer);
  }
  blob_append(renderer.pOut, "\n", 1);
  blob_append_char(renderer.pOut, '\n');
  free(renderer.aStack);
}

/*
** COMMAND: test-wiki-render
**
** Usage: %fossil test-wiki-render FILE [OPTIONS]
**
** Translate the input FILE from Fossil-wiki into HTML and write
** the resulting HTML on standard output.
**
** Options:
**    --buttons        Set the WIKI_BUTTONS flag
**    --htmlonly       Set the WIKI_HTMLONLY flag
**    --linksonly      Set the WIKI_LINKSONLY flag
**    --nobadlinks     Set the WIKI_NOBADLINKS flag
**    --inline         Set the WIKI_INLINE flag
**    --noblock        Set the WIKI_NOBLOCK flag
**    --dark-pikchr    Render pikchrs in dark mode
*/
void test_wiki_render(void){
  Blob in, out;
  int flags = 0;
  if( find_option("buttons",0,0)!=0 ) flags |= WIKI_BUTTONS;
  if( find_option("htmlonly",0,0)!=0 ) flags |= WIKI_HTMLONLY;
  if( find_option("linksonly",0,0)!=0 ) flags |= WIKI_LINKSONLY;
  if( find_option("nobadlinks",0,0)!=0 ) flags |= WIKI_NOBADLINKS;
  if( find_option("inline",0,0)!=0 ) flags |= WIKI_INLINE;
  if( find_option("noblock",0,0)!=0 ) flags |= WIKI_NOBLOCK;
  if( find_option("dark-pikchr",0,0)!=0 ){
    pikchr_to_html_add_flags( PIKCHR_PROCESS_DARK_MODE );
  }
  db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
  verify_all_options();
  if( g.argc!=3 ) usage("FILE");
  blob_zero(&out);
  blob_read_from_file(&in, g.argv[2]);
  wiki_convert(&in, &out, 0);
  blob_read_from_file(&in, g.argv[2], ExtFILE);
  wiki_convert(&in, &out, flags);
  blob_write_to_file(&out, "-");
}

/*
** COMMAND: test-markdown-render
**
** Usage: %fossil test-markdown-render FILE ...
**
** Render markdown in FILE as HTML on stdout.
** Options:
**
**    --safe            Restrict the output to use only "safe" HTML
**    --lint-footnotes  Print stats for footnotes-related issues
**    --dark-pikchr     Render pikchrs in dark mode
*/
void test_markdown_render(void){
  Blob in, out;
  int i;
  int bSafe = 0, bFnLint = 0;
  db_find_and_open_repository(OPEN_OK_NOT_FOUND|OPEN_SUBSTITUTE,0);
  bSafe = find_option("safe",0,0)!=0;
  bFnLint = find_option("lint-footnotes",0,0)!=0;
  if( find_option("dark-pikchr",0,0)!=0 ){
    pikchr_to_html_add_flags( PIKCHR_PROCESS_DARK_MODE );
  }
  verify_all_options();
  for(i=2; i<g.argc; i++){
    blob_zero(&out);
    blob_read_from_file(&in, g.argv[i], ExtFILE);
    if( g.argc>3 ){
      fossil_print("<!------ %h ------->\n", g.argv[i]);
    }
    markdown_to_html(&in, 0, &out);
    safe_html_context( bSafe ? DOCSRC_UNTRUSTED : DOCSRC_TRUSTED );
    safe_html(&out);
    blob_write_to_file(&out, "-");
    blob_reset(&in);
    blob_reset(&out);
  }
  if( bFnLint && (g.ftntsIssues[0] || g.ftntsIssues[1]
      || g.ftntsIssues[2] || g.ftntsIssues[3] )){
    fossil_fatal("There were issues with footnotes:\n"
                  " %8d misreference%s\n"
                  " %8d unreferenced\n"
                  " %8d split\n"
                  " %8d overnested",
                  g.ftntsIssues[0], g.ftntsIssues[0]==1?"":"s",
                  g.ftntsIssues[1], g.ftntsIssues[2], g.ftntsIssues[3]);
  }
}

/*
** Search for a <title>...</title> at the beginning of a wiki page.
** Return true (nonzero) if a title is found.  Return zero if there is
** not title.
**
** If a title is found, initialize the pTitle blob to be the content
** of the title and initialize pTail to be the text that follows the
** title.
*/
int wiki_find_title(Blob *pIn, Blob *pTitle, Blob *pTail){
  char *z;
  int i;
  int iStart;
  blob_to_utf8_no_bom(pIn, 0);
  z = skip_bom(blob_str(pIn));
  for(i=0; isspace(z[i]); i++){}
  z = blob_str(pIn);
  for(i=0; fossil_isspace(z[i]); i++){}
  if( z[i]!='<' ) return 0;
  i++;
  if( strncmp(&z[i],"title>", 6)!=0 ) return 0;
  iStart = i+6;
  for(iStart=i+6; fossil_isspace(z[iStart]); iStart++){}
  for(i=iStart; z[i] && (z[i]!='<' || strncmp(&z[i],"</title>",8)!=0); i++){}
  if( strncmp(&z[i],"</title>",8)!=0 ){
    blob_init(pTitle, 0, 0);
    blob_init(pTail, &z[iStart], -1);
  if( z[i]!='<' ) return 0;
  blob_init(pTitle, &z[iStart], i-iStart);
    return 1;
  }
  if( i-iStart>0 ){
    blob_init(pTitle, &z[iStart], i-iStart);
  }else{
    blob_init(pTitle, 0, 0);
  }
  blob_init(pTail, &z[i+8], -1);
  return 1;
}

/*
** Parse text looking for wiki hyperlinks in one of the formats:
**
**       [target]
**       [target|...]
**
** Where "target" can be either an artifact ID prefix or a wiki page
** name.  For each such hyperlink found, add an entry to the
** backlink table.
*/
void wiki_extract_links(
  char *z,           /* The wiki text from which to extract links */
  int srcid,         /* srcid field for new BACKLINK table entries */
  Backlink *pBklnk,  /* Backlink extraction context */
  int srctype,       /* srctype field for new BACKLINK table entries */
  double mtime,      /* mtime field for new BACKLINK table entries */
  int replaceFlag,   /* True first delete prior BACKLINK entries */
  int flags          /* wiki parsing flags */
){
  Renderer renderer;
  int tokenType;
  ParsedMarkup markup;
  int n;
  int inlineOnly;
  int wikiUseHtml = 0;
  int wikiHtmlOnly = 0;

  memset(&renderer, 0, sizeof(renderer));
  renderer.state = ALLOW_WIKI|AT_NEWLINE|AT_PARAGRAPH;
  if( flags & WIKI_NOBLOCK ){
    renderer.state |= INLINE_MARKUP_ONLY;
  }
  if( wikiUsesHtml() ){
    renderer.state |= WIKI_USE_HTML;
    wikiUseHtml = 1;
    renderer.state |= WIKI_HTMLONLY;
    wikiHtmlOnly = 1;
  }
  inlineOnly = (renderer.state & INLINE_MARKUP_ONLY)!=0;
  if( replaceFlag ){
    db_multi_exec("DELETE FROM backlink WHERE srctype=%d AND srcid=%d",
                  srctype, srcid);
  }


  while( z[0] ){
    if( wikiUseHtml ){
    if( wikiHtmlOnly ){
      n = nextRawToken(z, &renderer, &tokenType);
    }else{
      n = nextWikiToken(z, &renderer, &tokenType);
    }
    switch( tokenType ){
      case TOKEN_LINK: {
        char *zTarget;
        int i, c;
        int i;
        char zLink[42];

        zTarget = &z[1];
        for(i=0; zTarget[i] && zTarget[i]!='|' && zTarget[i]!=']'; i++){}
        while(i>1 && zTarget[i-1]==' '){ i--; }
        c = zTarget[i];
        zTarget[i] = 0;
        if( is_valid_uuid(zTarget) ){
          memcpy(zLink, zTarget, i+1);
        backlink_create(pBklnk, zTarget, i);
          canonical16(zLink, i);
          db_multi_exec(
             "REPLACE INTO backlink(target,srctype,srcid,mtime)"
             "VALUES(%Q,%d,%d,%g)", zLink, srctype, srcid, mtime
          );
        }
        zTarget[i] = c;
        break;
      }
      case TOKEN_MARKUP: {
        const char *zId;
        int iDiv;
        parseMarkup(&markup, z);

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        }else

        /* Enter <verbatim> processing.  With verbatim enabled, all other
        ** markup other than the corresponding end-tag with the same ID is
        ** ignored.
        */
        if( markup.iCode==MARKUP_VERBATIM ){
          int vAttrIdx, vAttrDidAppend=0;
          int vAttrIdx;
          renderer.zVerbatimId = 0;
          renderer.inVerbatim = 1;
          renderer.preVerbState = renderer.state;
          renderer.state &= ~ALLOW_WIKI;
          for (vAttrIdx = 0; vAttrIdx < markup.nAttr; vAttrIdx++){
            if( markup.aAttr[vAttrIdx].iACode == ATTR_ID ){
              renderer.zVerbatimId = markup.aAttr[0].zValue;
            }else if( markup.aAttr[vAttrIdx].iACode == ATTR_TYPE ){
              vAttrDidAppend=1;
            }
          }
          renderer.wantAutoParagraph = 0;
        }

        /* Restore the input text to its original configuration
        */
        unparseMarkup(&markup);
        break;
      }
      default: {
        break;
      }
    }
    z += n;
  }
  free(renderer.aStack);
}

/*
** Return the length, in bytes, of the HTML token that z is pointing to.
*/
int html_token_length(const char *z){
  int n;
  char c;
  if( (c=z[0])=='<' ){
    n = html_tag_length(z);
    if( n<=0 ) n = 1;
  }else if( fossil_isspace(c) ){
    for(n=1; z[n] && fossil_isspace(z[n]); n++){}
  }else if( c=='&' ){
    n = z[1]=='#' ? 2 : 1;
    while( fossil_isalnum(z[n]) ) n++;
    if( z[n]==';' ) n++;
  }else{
    n = 1;
    for(n=1; 1; n++){
      if( (c = z[n]) > '<' ) continue;
      if( c=='<' || c=='&' || fossil_isspace(c) || c==0 ) break;
    }
  }
  return n;
}

/*
** z points to someplace in the middle of HTML markup.  Return the length
** of the subtoken that starts on z.
*/
int html_subtoken_length(const char *z){
  int n;
  char c;
  c = z[0];
  if( fossil_isspace(c) ){
    for(n=1; z[n] && fossil_isspace(z[n]); n++){}
    return n;
  }
  if( c=='"' || c=='\'' ){
    for(n=1; z[n] && z[n]!=c && z[n]!='>'; n++){}
    if( z[n]==c ) n++;
    return n;
  }
  if( c=='>' ){
    return 0;
  }
  if( c=='=' ){
    return 1;
  }
  if( fossil_isalnum(c) || c=='/' ){
    for(n=1; (c=z[n])!=0 && (fossil_isalnum(c) || c=='-' || c=='_'); n++){}
    return n;
  }
  return 1;
}

/*
** z points to an HTML markup token:  <TAG ATTR=VALUE ...>
** This routine looks for the VALUE associated with zAttr and returns
** a pointer to the start of that value and sets *pLen to be the length
** in bytes for the value.  Or it returns NULL if no such attr exists.
*/
const char *html_attribute(const char *zMarkup, const char *zAttr, int *pLen){
  int i = 1;
  int n;
  int nAttr;
  int iMatchCnt = 0;
  assert( zMarkup[0]=='<' );
  assert( zMarkup[1]!=0 );
  n = html_subtoken_length(zMarkup+i);
  if( n==0 ) return 0;
  i += n;
  nAttr = (int)strlen(zAttr);
  while( 1 ){
    const char *zStart = zMarkup+i;
    n = html_subtoken_length(zStart);
    if( n==0 ) break;
    i += n;
    if( fossil_isspace(zStart[0]) ) continue;
    if( n==nAttr && fossil_strnicmp(zAttr,zStart,nAttr)==0 ){
      iMatchCnt = 1;
    }else if( n==1 && zStart[0]=='=' && iMatchCnt==1 ){
      iMatchCnt = 2;
    }else if( iMatchCnt==2 ){
      if( (zStart[0]=='"' || zStart[0]=='\'') && zStart[n-1]==zStart[0] ){
        zStart++;
        n -= 2;
      }
      *pLen = n;
      return zStart;
    }else{
      iMatchCnt = 0;
    }
  }
  return 0;
}

/*
** COMMAND: test-html-tokenize
**
** Tokenize an HTML file.  Return the offset and length and text of
** each token - one token per line.  Omit white-space tokens.
*/
void test_html_tokenize(void){
  Blob in;
  char *z;
  int i;
  int iOfst, n;

  for(i=2; i<g.argc; i++){
    blob_read_from_file(&in, g.argv[i], ExtFILE);
    z = blob_str(&in);
    for(iOfst=0; z[iOfst]; iOfst+=n){
      n = html_token_length(z+iOfst);
      if( fossil_isspace(z[iOfst]) ) continue;
      fossil_print("%d %d %.*s\n", iOfst, n, n, z+iOfst);
      if( z[iOfst]=='<' && n>1 ){
        int j,k;
        for(j=iOfst+1; (k = html_subtoken_length(z+j))>0; j+=k){
          if( fossil_isspace(z[j]) || z[j]=='=' ) continue;
          fossil_print("# %d %d %.*s\n", j, k, k, z+j);
        }
      }
    }
    blob_reset(&in);
  }
}

/*
** Attempt to reformat messy HTML to be easily readable by humans.
**
**    *  Try to keep lines less than 80 characters in length
**    *  Collapse white space into a single space
**    *  Put a blank line before:
**          <blockquote><center><code><hN><p><pre><table>
**    *  Put a newline after <br> and <hr>
**    *  Start each of the following elements on a new line:
**          <address><cite><dd><div><dl><dt><li><ol><samp>
**          <tbody><td><tfoot><th><thead><tr><ul>
**
** Except, do not do any reformatting inside of <pre>...</pre>
*/
void htmlTidy(const char *zIn, Blob *pOut){
  int n;
  int nPre = 0;
  int iCur = 0;
  int wantSpace = 0;
  int omitSpace = 1;
  while( zIn[0] ){
    n = html_token_length(zIn);
    if( zIn[0]=='<' && n>1 ){
      int i, j;
      int isCloseTag;
      int eTag;
      int eType;
      char zTag[32];
      isCloseTag = zIn[1]=='/';
      for(i=0, j=1+isCloseTag; i<30 && fossil_isalnum(zIn[j]); i++, j++){
         zTag[i] = fossil_tolower(zIn[j]);
      }
      zTag[i] = 0;
      eTag = findTag(zTag);
      eType = aMarkup[eTag].iType;
      if( eTag==MARKUP_PRE ){
        if( isCloseTag ){
          nPre--;
          blob_append(pOut, zIn, n);
          zIn += n;
          if( nPre==0 ){ blob_append_char(pOut, '\n'); iCur = 0; }
          continue;
        }else{
          if( iCur && nPre==0 ){ blob_append_char(pOut, '\n'); iCur = 0; }
          nPre++;
        }
      }else if( eType & (MUTYPE_BLOCK|MUTYPE_TABLE) ){
        if( !isCloseTag && nPre==0 && blob_size(pOut)>0 ){
          blob_append(pOut, "\n\n", 1 + (iCur>0));
          iCur = 0;
        }
        wantSpace = 0;
        omitSpace = 1;
      }else if( (eType & (MUTYPE_LIST|MUTYPE_LI|MUTYPE_TR|MUTYPE_TD))!=0
             || eTag==MARKUP_HR
      ){
        if( nPre==0 && (!isCloseTag || (eType&MUTYPE_LIST)!=0) && iCur>0 ){
          blob_append_char(pOut, '\n');
          iCur = 0;
        }
        wantSpace = 0;
        omitSpace = 1;
      }
      if( wantSpace && nPre==0 ){
        if( iCur+n+1>=80 ){
          blob_append_char(pOut, '\n');
          iCur = 0;
        }else{
          blob_append_char(pOut, ' ');
          iCur++;
        }
      }
      blob_append(pOut, zIn, n);
      iCur += n;
      wantSpace = 0;
      if( eTag==MARKUP_BR || eTag==MARKUP_HR ){
        blob_append_char(pOut, '\n');
        iCur = 0;
      }
    }else if( fossil_isspace(zIn[0]) ){
      if( nPre ){
        blob_append(pOut, zIn, n);
      }else{
        wantSpace = !omitSpace;
      }
    }else{
      if( wantSpace && nPre==0 ){
        if( iCur+n+1>=80 ){
          blob_append_char(pOut, '\n');
          iCur = 0;
        }else{
          blob_append_char(pOut, ' ');
          iCur++;
        }
      }
      blob_append(pOut, zIn, n);
      iCur += n;
      wantSpace = omitSpace = 0;
    }
    zIn += n;
  }
  if( iCur ) blob_append_char(pOut, '\n');
}

/*
** COMMAND: test-html-tidy
**
** Run the htmlTidy() routine on the content of all files named on
** the command-line and write the results to standard output.
*/
void test_html_tidy(void){
  Blob in, out;
  int i;

  for(i=2; i<g.argc; i++){
    blob_read_from_file(&in, g.argv[i], ExtFILE);
    blob_zero(&out);
    htmlTidy(blob_str(&in), &out);
    blob_reset(&in);
    fossil_puts(blob_buffer(&out), 0, blob_size(&out));
    blob_reset(&out);
  }
}

/*
** Remove all HTML markup from the input text.  The output written into
** pOut is pure text.
**
** Put the title on the first line, if there is any <title> markup.
** If there is no <title>, then create a blank first line.
*/
void html_to_plaintext(const char *zIn, Blob *pOut){
  int n;
  int i, j;
  int inTitle = 0;          /* True between <title>...</title> */
  int seenText = 0;         /* True after first non-whitespace seen */
  int nNL = 0;              /* Number of \n characters at the end of pOut */
  int nWS = 0;              /* True if pOut ends with whitespace */
  while( fossil_isspace(zIn[0]) ) zIn++;
  while( zIn[0] ){
    n = html_token_length(zIn);
    if( zIn[0]=='<' && n>1 ){
      int isCloseTag;
      int eTag;
      int eType;
      char zTag[32];
      isCloseTag = zIn[1]=='/';
      for(i=0, j=1+isCloseTag; i<30 && fossil_isalnum(zIn[j]); i++, j++){
         zTag[i] = fossil_tolower(zIn[j]);
      }
      zTag[i] = 0;
      eTag = findTag(zTag);
      eType = aMarkup[eTag].iType;
      if( eTag==MARKUP_INVALID && fossil_strnicmp(zIn,"<style",6)==0 ){
        zIn += n;
        while( zIn[0] ){
          n = html_token_length(zIn);
          if( fossil_strnicmp(zIn, "</style",7)==0 ) break;
          zIn += n;
        }
        if( zIn[0]=='<' ) zIn += n;
        continue;
      }
      if( eTag==MARKUP_TITLE ){
        inTitle = !isCloseTag;
      }
      if( !isCloseTag && seenText && (eType & (MUTYPE_BLOCK|MUTYPE_TABLE))!=0 ){
        if( nNL==0 ){
          blob_append_char(pOut, '\n');
          nNL++;
        }
        nWS = 1;
      }
    }else if( fossil_isspace(zIn[0]) ){
      if( seenText ){
        nNL = 0;
        if( !inTitle ){ /* '\n' -> ' ' within <title> */
          for(i=0; i<n; i++) if( zIn[i]=='\n' ) nNL++;
        }
        if( !nWS ){
          blob_append_char(pOut, nNL ? '\n' : ' ');
          nWS = 1;
        }
      }
    }else if( zIn[0]=='&' ){
      char c = '?';
      if( zIn[1]=='#' ){
        int x = atoi(&zIn[1]);
        if( x>0 && x<=127 ) c = x;
      }else{
        static const struct { int n; char c; char *z; } aEntity[] = {
           { 5, '&', "&amp;"   },
           { 4, '<', "&lt;"    },
           { 4, '>', "&gt;"    },
           { 6, ' ', "&nbsp;"  },
        };
        int jj;
        for(jj=0; jj<count(aEntity); jj++){
          if( aEntity[jj].n==n && strncmp(aEntity[jj].z,zIn,n)==0 ){
            c = aEntity[jj].c;
            break;
          }
        }
      }
      if( fossil_isspace(c) ){
        if( nWS==0 && seenText ) blob_append_char(pOut, c);
        nWS = 1;
        nNL = c=='\n';
      }else{
        if( !seenText && !inTitle ) blob_append_char(pOut, '\n');
        seenText = 1;
        nNL = nWS = 0;
        blob_append_char(pOut, c);
      }
    }else{
      if( !seenText && !inTitle ) blob_append_char(pOut, '\n');
      seenText = 1;
      nNL = nWS = 0;
      blob_append(pOut, zIn, n);
    }
    zIn += n;
  }
  if( nNL==0 ) blob_append_char(pOut, '\n');
}

/*
** COMMAND: test-html-to-text
**
** Usage: %fossil test-html-to-text FILE ...
**
** Read all files named on the command-line.  Convert the file
** content from HTML to text and write the results on standard
** output.
**
** This command is intended as a test and debug interface for
** the html_to_plaintext() routine.
*/
void test_html_to_text(void){
  Blob in, out;
  int i;

  for(i=2; i<g.argc; i++){
    blob_read_from_file(&in, g.argv[i], ExtFILE);
    blob_zero(&out);
    html_to_plaintext(blob_str(&in), &out);
    blob_reset(&in);
    fossil_puts(blob_buffer(&out), 0, blob_size(&out));
    blob_reset(&out);
  }
}

/****************************************************************************
** safe-html:
**
** An interface for preventing HTML constructs (ex: <style>, <form>, etc)
** from being inserted into Wiki and Forum posts using Markdown.   See the
** comment on safe_html_append() for additional information on what is meant
** by "safe".
**
** The safe-html restrictions only apply to Markdown, as Fossil-Wiki only
** allows safe-html by design - unsafe-HTML is never and has never been
** allowed in Fossil-Wiki.
**
** This code is in the wikiformat.c file so that it can have access to the
** white-list of acceptable HTML in the aMarkup[] array.
*/

/*
** An instance of this object keeps track of the nesting of HTML
** elements for safe_html_append().
*/
typedef struct HtmlTagStack HtmlTagStack;
struct HtmlTagStack {
  int n;                /* Current tag stack depth */
  int nAlloc;           /* Space allocated for aStack[] */
  int *aStack;          /* The stack of tags */
  int aSpace[10];       /* Initial static space, to avoid malloc() */
};

/*
** Initialize bulk memory to a valid empty tagstack.
*/
static void html_tagstack_init(HtmlTagStack *p){
  p->n = 0;
  p->nAlloc = 0;
  p->aStack = p->aSpace;
}

/*
** Push a new element onto the tag statk
*/
static void html_tagstack_push(HtmlTagStack *p, int e){
  if( p->n>=ArraySize(p->aSpace) && p->n>=p->nAlloc ){
    if( p->nAlloc==0 ){
      int *aNew;
      p->nAlloc = 50;
      aNew = fossil_malloc( sizeof(p->aStack[0])*p->nAlloc );
      memcpy(aNew, p->aStack, sizeof(p->aStack[0])*p->n );
      p->aStack = aNew;
    }else{
      p->nAlloc *= 2;
      p->aStack = fossil_realloc(p->aStack, sizeof(p->aStack[0])*p->nAlloc );
    }
  }
  p->aStack[p->n++] = e;
}

/*
** Clear a tag stack, reclaiming any memory allocations.
*/
static void html_tagstack_clear(HtmlTagStack *p){
  if( p->nAlloc ){
    fossil_free(p->aStack);
    p->nAlloc = 0;
    p->aStack = p->aSpace;
  }
  p->n = 0;
}

/*
** The HTML end-tag eEnd wants to be added to pBlob.
**
** If an open-tag for eEnd exists anywhere on the stack, then
** pop it and all prior elements from the task, issuing appropriate
** end-tags as you go.
**
** If there is no open-tag for eEnd on the stack, then this
** routine is a no-op.
*/
static void html_tagstack_pop(HtmlTagStack *p, Blob *pBlob, int eEnd){
  int i, e;
  if( eEnd!=0 ){
    for(i=p->n-1; i>=0 && p->aStack[i]!=eEnd; i--){}
    if( i<0 ){
      blob_appendf(pBlob, "<span class='error'>&lt;/%s&gt;</span>",
                   aMarkup[eEnd].zName);
      return;
    }
  }else if( p->n==0 ){
    return;
  }
  do{
    e = p->aStack[--p->n];
    if( e==eEnd || (aMarkup[e].iType & MUTYPE_Nested)!=0 ){
      blob_appendf(pBlob, "</%s>", aMarkup[e].zName);
    }
  }while( e!=eEnd && p->n>0 );
}

/*
** Return a nonce to indicate that safe_html() can allow code through
** without censoring.
**
** When safe_html() is asked to sanitize some HTML, it will ignore
** any text in between two consecutive instances of the nonce.  The
** nonce itself is an HTML comment so it is harmless to keep the
** nonce in the middle of the HTML stream.  A different nonce is
** choosen each time Fossil is run, using a lot of randomness, so
** an attacker will be unable to guess the nonce in advance.
**
** The original use-case for this mechanism is to allow Pikchr-generated
** SVG in the middle of HTML generated from Markdown.  The Markdown
** output will normally be processed by safe_html() to prevent accidental
** or malicious introduction of harmful HTML (ex: <script>) in the
** output stream.  The safe_html() only lets through HTML elements
** that are on its allow-list and SVG is not on that list.  Hence, in order
** to allow the Pikchr-generated SVG through, it must be surrounded by
** the nonce.
*/
const char *safe_html_nonce(int bGenerate){
  static char *zNonce = 0;
  if( zNonce==0 && bGenerate ){
    zNonce = db_text(0, "SELECT '<!--'||hex(randomblob(32))||'-->';");
  }
  return zNonce;
}
#define SAFE_NONCE_SIZE (4+64+3)

/*
** Append a safe translation of HTML text to a Blob object.
**
** Restriction: The input to this routine must be writable.
*  Temporary changes may be made to the input, but the input is restored
** to its original state prior to returning.  If zHtml[nHtml] is not a
** zero character, then a zero might be written in that position
** temporarily, but that slot will also be restored before this routine
** returns.
*/
static void safe_html_append(Blob *pBlob, char *zHtml, int nHtml){
  char cLast;
  int i, j, n;
  HtmlTagStack s;
  ParsedMarkup markup;
  const char *zNonce;
  char *z;

  if( nHtml<=0 ) return;
  cLast = zHtml[nHtml];
  zHtml[nHtml] = 0;
  html_tagstack_init(&s);

  i = 0;
  while( i<nHtml ){
    if( zHtml[i]=='<' ){
      j = i;
    }else{
      z = strchr(zHtml+i, '<');
      if( z==0 ){
        blob_append(pBlob, zHtml+i, nHtml-i);
        break;
      }
      j = (int)(z - zHtml);
      blob_append(pBlob, zHtml+i, j-i);
    }
    if( zHtml[j+1]=='!'
     && j+2*SAFE_NONCE_SIZE<nHtml
     && (zNonce = safe_html_nonce(0))!=0
     && strncmp(zHtml+j,zNonce,SAFE_NONCE_SIZE)==0
     && (z = strstr(zHtml+j+SAFE_NONCE_SIZE,zNonce))!=0
    ){
      i = (int)(z - zHtml) + SAFE_NONCE_SIZE;
      blob_append(pBlob, zHtml+j, i-j);
      continue;
    }
    n = html_tag_length(zHtml+j);
    if( n==0 ){
      blob_append(pBlob, "&lt;", 4);
      i = j+1;
      continue;
    }else{
      i = j + n;
    }
    parseMarkup(&markup, zHtml+j);
    if( markup.iCode==MARKUP_INVALID ){
      unparseMarkup(&markup);
      blob_appendf(pBlob, "<span class='error'>&lt;%.*s&gt;</span>",
                   n-2, zHtml+j+1);
      continue;
    }
    if( (markup.iType & MUTYPE_Nested)==0 || markup.iCode==MARKUP_P ){
      renderMarkup(pBlob, &markup);
    }else{
      if( markup.endTag ){
        html_tagstack_pop(&s, pBlob, markup.iCode);
      }else{
        renderMarkup(pBlob, &markup);
        html_tagstack_push(&s, markup.iCode);
      }
    }
    unparseMarkup(&markup);
  }
  html_tagstack_pop(&s, pBlob, 0);
  html_tagstack_clear(&s);
  zHtml[nHtml] = cLast;
}

/*
** This local variable is true if the safe_html() function is enabled.
** In other words, this is true if the output of Markdown should be
** restricted to use only "safe" HTML.
*/
static int safeHtmlEnable = 1;


#if INTERFACE
/*
** Allowed values for the eTrust parameter to safe_html_context().
*/
#define DOCSRC_FILE       1     /* Document is a checked-in file */
#define DOCSRC_FORUM      2     /* Document is a forum post */
#define DOCSRC_TICKET     3     /* Document is a ticket comment */
#define DOCSRC_WIKI       4     /* Document is a wiki page */
#define DOCSRC_TRUSTED    5     /* safe_html() is always a no-op */
#define DOCSRC_UNTRUSTED  6     /* safe_html() is always enabled */
#endif /* INTERFACE */


/*
** Specify the context in which a markdown document with potentially
** unsafe HTML will be rendered.
*/
void safe_html_context(int eTrust){
  static const char *zSafeHtmlSetting = 0;
  char cPerm = 0;
  if( eTrust==DOCSRC_TRUSTED ){
    safeHtmlEnable = 0;
    return;
  }
  if( eTrust==DOCSRC_UNTRUSTED ){
    safeHtmlEnable = 1;
    return;
  }
  if( zSafeHtmlSetting==0 ){
    zSafeHtmlSetting = db_get("safe-html", "");
  }
  switch( eTrust ){
    case DOCSRC_FILE:   cPerm = 'b';  break;
    case DOCSRC_FORUM:  cPerm = 'f';  break;
    case DOCSRC_TICKET: cPerm = 't';  break;
    case DOCSRC_WIKI:   cPerm = 'w';  break;
  }
  safeHtmlEnable = (strchr(zSafeHtmlSetting,cPerm)==0);
}

/*
** SETTING: safe-html        width=8
** This setting controls whether or not unsafe HTML elements
** (such as SCRIPT or STYLE tags) are allowed in Markdown-formatted
** documents.  Unsafe HTML is disabled by default.  If this setting
** exists and is a string, then letters in that string can enable
** unsafe HTML in various contexts:
**
**    - b         Unsafe HTML allowed in embedded documentation
**    - f         Unsafe HTML allowed in forum posts
**    - t         Unsafe HTML allowed in tickets
**    - w         Unsafe HTML allowed on wiki pages
*/
/*
** The input blob contains HTML.  If safe-html is enabled, then
** convert the input into "safe HTML".  The following modifications
** are made:
**
**    1.  Remove any elements that are not on the AllowedMarkup list.
**        (ex: <script>, <form>, etc.)
**
**    2.  Remove any attributes that are not on the AllowedMarkup list.
**        (ex: onload=, etc.)
**
**    3.  Omit any surplus close-tags.  This prevents the script from
**        terminating an <div> or similar in the outer context.
**
**    4.  Insert additional close-tags as necessary so that any
**        tag in the input that needs a close-tag has one.  This
**        prevents tags in the embedded script from affecting the
**        display of content that follows this script in the enclosing
**        context.
**
** These modifications are intended to make the generated HTML safe
** to be embedded in a larger HTML document, such that the embedded
** HTML has no influence on the formatting and operation of the
** larger document.
**
** If safe-html is disabled, then this routine is a no-op.
*/
void safe_html(Blob *in){
  Blob out;      /* Holding area for the revised text during construction */
  char *z;       /* Original input text */
  int n;         /* Number of bytes in the original input text */
  int k;

  if( safeHtmlEnable==0 ) return;
  z = blob_str(in);
  n = blob_size(in);
  blob_init(&out, 0, 0);
  while( fossil_isspace(z[0]) ){ z++; n--; }
  for(k=n-1; k>5 && fossil_isspace(z[k]); k--){}

  if( fossil_strnicmp(z, "<div",4)==0 && !fossil_isalpha(z[4])
   && fossil_strnicmp(z+k-5, "</div>",6)==0
  ){
    /* The input contains an outer <div>...</div>.  Preserve the
    ** full scope of that <div>. */
    int m = html_tag_length(z);
    k -= 5;
    blob_append(&out, z, m);
    safe_html_append(&out, z+m, k-m);
    blob_append(&out, z+k, n-k);
  }else{
    safe_html_append(&out, z, n);
  }
  blob_reset(in);
  *in = out;
}

/*
** COMMAND: test-safe-html
**
** Usage: %fossil test-safe-html FILE ...
**
** Read files named on the command-line.  Send the text of each file
** through safe_html_append() and then write the result on
** standard output.
*/
void test_safe_html_cmd(void){
  int i;
  Blob x;
  for(i=2; i<g.argc; i++){
    char *z;
    int n;
    blob_read_from_file(&x, g.argv[i], ExtFILE);
    blob_terminate(&x);
    safe_html(&x);
    z = blob_str(&x);
    n = blob_size(&x);
    while( n>0 && (z[n-1]=='\n' || z[n-1]=='\r') ) n--;
    fossil_print("%.*s\n", n, z);
    blob_reset(&x);
  }
}
Added src/winfile.c.








































































































































































































































































































































































































































































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/*
** Copyright (c) 2006 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file implements several non-trivial file handling wrapper functions
** on Windows using the Win32 API.
*/
#include "config.h"
#ifdef _WIN32
/* This code is for win32 only */
#include <sys/stat.h>
#include <windows.h>
#include "winfile.h"

#ifndef LABEL_SECURITY_INFORMATION
#   define LABEL_SECURITY_INFORMATION (0x00000010L)
#endif

/*
** Fill stat buf with information received from stat() or lstat().
** lstat() is called on Unix if eFType is RepoFile and the allow-symlinks
** setting is on.  But as windows does not support symbolic links, the
** eFType parameter is ignored here.
*/
int win32_stat(const wchar_t *zFilename, struct fossilStat *buf, int eFType){
  WIN32_FILE_ATTRIBUTE_DATA attr;
  int rc = GetFileAttributesExW(zFilename, GetFileExInfoStandard, &attr);
  if( rc ){
    ULARGE_INTEGER ull;
    ull.LowPart = attr.ftLastWriteTime.dwLowDateTime;
    ull.HighPart = attr.ftLastWriteTime.dwHighDateTime;
    buf->st_mode = (attr.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ?
                   S_IFDIR : S_IFREG;
    buf->st_size = (((i64)attr.nFileSizeHigh)<<32) | attr.nFileSizeLow;
    buf->st_mtime = ull.QuadPart / 10000000ULL - 11644473600ULL;
  }
  return !rc;
}

/*
** Wrapper around the access() system call.  This code was copied from Tcl
** 8.6 and then modified.
*/
int win32_access(const wchar_t *zFilename, int flags){
  int rc = 0;
  PSECURITY_DESCRIPTOR pSd = NULL;
  unsigned long size = 0;
  PSID pSid = NULL;
  BOOL sidDefaulted;
  BOOL impersonated = FALSE;
  SID_IDENTIFIER_AUTHORITY unmapped = {{0, 0, 0, 0, 0, 22}};
  GENERIC_MAPPING genMap;
  HANDLE hToken = NULL;
  DWORD desiredAccess = 0, grantedAccess = 0;
  BOOL accessYesNo = FALSE;
  PPRIVILEGE_SET pPrivSet = NULL;
  DWORD privSetSize = 0;
  DWORD attr = GetFileAttributesW(zFilename);

  if( attr==INVALID_FILE_ATTRIBUTES ){
    /*
     * File might not exist.
     */

    if( GetLastError()!=ERROR_SHARING_VIOLATION ){
      rc = -1; goto done;
    }
  }

  if( flags==F_OK ){
    /*
     * File exists, nothing else to check.
     */

    goto done;
  }

  if( (flags & W_OK)
      && (attr & FILE_ATTRIBUTE_READONLY)
      && !(attr & FILE_ATTRIBUTE_DIRECTORY) ){
    /*
     * The attributes say the file is not writable.  If the file is a
     * regular file (i.e., not a directory), then the file is not
     * writable, full stop.  For directories, the read-only bit is
     * (mostly) ignored by Windows, so we can't ascertain anything about
     * directory access from the attrib data.
     */

    rc = -1; goto done;
  }

  /*
   * It looks as if the permissions are ok, but if we are on NT, 2000 or XP,
   * we have a more complex permissions structure so we try to check that.
   * The code below is remarkably complex for such a simple thing as finding
   * what permissions the OS has set for a file.
   */

  /*
   * First find out how big the buffer needs to be.
   */

  GetFileSecurityW(zFilename,
      OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION |
      DACL_SECURITY_INFORMATION | LABEL_SECURITY_INFORMATION,
      0, 0, &size);

  /*
   * Should have failed with ERROR_INSUFFICIENT_BUFFER
   */

  if( GetLastError()!=ERROR_INSUFFICIENT_BUFFER ){
    /*
     * Most likely case is ERROR_ACCESS_DENIED, which we will convert to
     * EACCES - just what we want!
     */

    rc = -1; goto done;
  }

  /*
   * Now size contains the size of buffer needed.
   */

  pSd = (PSECURITY_DESCRIPTOR)HeapAlloc(GetProcessHeap(), 0, size);

  if( pSd==NULL ){
    rc = -1; goto done;
  }

  /*
   * Call GetFileSecurity() for real.
   */

  if( !GetFileSecurityW(zFilename,
          OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION |
          DACL_SECURITY_INFORMATION | LABEL_SECURITY_INFORMATION,
          pSd, size, &size) ){
    /*
     * Error getting owner SD
     */

    rc = -1; goto done;
  }

  /*
   * As of Samba 3.0.23 (10-Jul-2006), unmapped users and groups are
   * assigned to SID domains S-1-22-1 and S-1-22-2, where "22" is the
   * top-level authority.  If the file owner and group is unmapped then
   * the ACL access check below will only test against world access,
   * which is likely to be more restrictive than the actual access
   * restrictions.  Since the ACL tests are more likely wrong than
   * right, skip them.  Moreover, the unix owner access permissions are
   * usually mapped to the Windows attributes, so if the user is the
   * file owner then the attrib checks above are correct (as far as they
   * go).
   */

  if( !GetSecurityDescriptorOwner(pSd, &pSid, &sidDefaulted) ||
      memcmp(GetSidIdentifierAuthority(pSid), &unmapped,
             sizeof(SID_IDENTIFIER_AUTHORITY))==0 ){
    goto done; /* Attrib tests say access allowed. */
  }

  /*
   * Perform security impersonation of the user and open the resulting
   * thread token.
   */

  if( !ImpersonateSelf(SecurityImpersonation) ){
    /*
     * Unable to perform security impersonation.
     */

    rc = -1; goto done;
  }
  impersonated = TRUE;

  if( !OpenThreadToken(GetCurrentThread(),
      TOKEN_DUPLICATE | TOKEN_QUERY, FALSE, &hToken) ){
    /*
     * Unable to get current thread's token.
     */

    rc = -1; goto done;
  }

  /*
   * Setup desiredAccess according to the access priveleges we are
   * checking.
   */

  if( flags & R_OK ){
    desiredAccess |= FILE_GENERIC_READ;
  }
  if( flags & W_OK){
    desiredAccess |= FILE_GENERIC_WRITE;
  }

  memset(&genMap, 0, sizeof(GENERIC_MAPPING));
  genMap.GenericRead = FILE_GENERIC_READ;
  genMap.GenericWrite = FILE_GENERIC_WRITE;
  genMap.GenericExecute = FILE_GENERIC_EXECUTE;
  genMap.GenericAll = FILE_ALL_ACCESS;

  AccessCheck(pSd, hToken, desiredAccess, &genMap, 0,
                   &privSetSize, &grantedAccess, &accessYesNo);
  /*
   * Should have failed with ERROR_INSUFFICIENT_BUFFER
   */

  if( GetLastError()!=ERROR_INSUFFICIENT_BUFFER ){
    rc = -1; goto done;
  }
  pPrivSet = (PPRIVILEGE_SET)HeapAlloc(GetProcessHeap(), 0, privSetSize);

  if( pPrivSet==NULL ){
    rc = -1; goto done;
  }

  /*
   * Perform access check using the token.
   */

  if( !AccessCheck(pSd, hToken, desiredAccess, &genMap, pPrivSet,
                   &privSetSize, &grantedAccess, &accessYesNo) ){
    /*
     * Unable to perform access check.
     */

    rc = -1; goto done;
  }
  if( !accessYesNo ){
    rc = -1;
  }

done:

  if( hToken != NULL ){
    CloseHandle(hToken);
  }
  if( impersonated ){
    RevertToSelf();
    impersonated = FALSE;
  }
  if( pPrivSet!=NULL ){
    HeapFree(GetProcessHeap(), 0, pPrivSet);
  }
  if( pSd!=NULL ){
    HeapFree(GetProcessHeap(), 0, pSd);
  }
  return rc;
}

/*
** Wrapper around the chdir() system call.
*/
int win32_chdir(const wchar_t *zChDir, int bChroot){
  int rc = (int)!SetCurrentDirectoryW(zChDir);
  return rc;
}

/*
** Get the current working directory.
**
** On windows, the name is converted from unicode to UTF8 and all '\\'
** characters are converted to '/'.
*/
void win32_getcwd(char *zBuf, int nBuf){
  int i;
  char *zUtf8;
  wchar_t *zWide = fossil_malloc( sizeof(wchar_t)*nBuf );
  if( GetCurrentDirectoryW(nBuf, zWide)==0 ){
    fossil_fatal("cannot find current working directory.");
  }
  zUtf8 = fossil_path_to_utf8(zWide);
  fossil_free(zWide);
  for(i=0; zUtf8[i]; i++) if( zUtf8[i]=='\\' ) zUtf8[i] = '/';
  strncpy(zBuf, zUtf8, nBuf);
  fossil_path_free(zUtf8);
}

/* Perform case-insensitive comparison of two UTF-16 file names. Try to load the
** CompareStringOrdinal() function on Windows Vista and newer, and resort to the
** RtlEqualUnicodeString() function on Windows XP.
** The dance to invoke RtlEqualUnicodeString() is necessary because lstrcmpiW()
** performs linguistic comparison, while the former performs binary comparison.
** As an example, matching "ß" (U+00DF Latin Small Letter Sharp S) with "ss" is
** undesirable in file name comparison, so lstrcmpiW() is only invoked in cases
** that are technically impossible and contradicting all known laws of physics.
*/
int win32_filenames_equal_nocase(
  const wchar_t *fn1,
  const wchar_t *fn2
){
  static FARPROC fnCompareStringOrdinal;
  static FARPROC fnRtlInitUnicodeString;
  static FARPROC fnRtlEqualUnicodeString;
  static int loaded_CompareStringOrdinal;
  static int loaded_RtlUnicodeStringAPIs;
  if( !loaded_CompareStringOrdinal ){
    fnCompareStringOrdinal =
      GetProcAddress(GetModuleHandleA("kernel32"),"CompareStringOrdinal");
    loaded_CompareStringOrdinal = 1;
  }
  if( fnCompareStringOrdinal ){
    return fnCompareStringOrdinal(fn1,-1,fn2,-1,1)-2==0;
  }
  if( !loaded_RtlUnicodeStringAPIs ){
    fnRtlInitUnicodeString =
      GetProcAddress(GetModuleHandleA("ntdll"),"RtlInitUnicodeString");
    fnRtlEqualUnicodeString =
      GetProcAddress(GetModuleHandleA("ntdll"),"RtlEqualUnicodeString");
    loaded_RtlUnicodeStringAPIs = 1;
  }
  if( fnRtlInitUnicodeString && fnRtlEqualUnicodeString ){
    struct { /* UNICODE_STRING from <ntdef.h> */
      unsigned short Length;
      unsigned short MaximumLength;
      wchar_t *Buffer;
    } u1, u2;
    fnRtlInitUnicodeString(&u1,fn1);
    fnRtlInitUnicodeString(&u2,fn2);
    return (unsigned char)fnRtlEqualUnicodeString(&u1,&u2,1);
  }
  /* In what kind of strange parallel universe are we? */
  return lstrcmpiW(fn1,fn2)==0;
}

/* Helper macros to deal with directory separators. */
#define IS_DIRSEP(s,i) ( s[i]=='/' || s[i]=='\\' )
#define NEXT_DIRSEP(s,i) while( s[i] && s[i]!='/' && s[i]!='\\' ){i++;}

/* The Win32 version of file_case_preferred_name() from file.c, which is able to
** find case-preserved file names containing non-ASCII characters. The result is
** allocated by fossil_malloc() and *should* be free'd by the caller. While this
** function usually gets canonicalized paths, it is able to handle any input and
** figure out more cases than the original:
**
**    fossil test-case-filename C:/ .//..\WINDOWS\/.//.\SYSTEM32\.\NOTEPAD.EXE
**    → Original:   .//..\WINDOWS\/.//.\SYSTEM32\.\NOTEPAD.EXE
**    → Modified:   .//..\Windows\/.//.\System32\.\notepad.exe
**
**    md ÄÖÜ
**    fossil test-case-filename ./\ .\äöü\/[empty]\\/
**    → Original:   ./äöü\/[empty]\\/
**    → Modified:   .\ÄÖÜ\/[empty]\\/
**
** The function preserves slashes and backslashes: only single file or directory
** components without directory separators ("basenames") are converted to UTF-16
** using fossil_utf8_to_path(), so bypassing its slash ↔ backslash translations.
** Note that the original function doesn't preserve all slashes and backslashes,
** for example in the second example above.
**
** NOTE: As of Windows 10, version 1803, case sensitivity may be enabled on a
** per-directory basis, as returned by NtQueryInformationFile() with the file
** information class FILE_CASE_SENSITIVE_INFORMATION. So this function may be
** changed to act like fossil_strdup() for files located in such directories.
*/
char *win32_file_case_preferred_name(
  const char *zBase,
  const char *zPath
){
  int cchBase;
  int cchPath;
  int cchBuf;
  int cchRes;
  char *zBuf;
  char *zRes;
  int ncUsed;
  int i, j;
  if( filenames_are_case_sensitive() ){
    return fossil_strdup(zPath);
  }
  cchBase = strlen(zBase);
  cchPath = strlen(zPath);
  cchBuf = cchBase + cchPath + 2; /* + NULL + optional directory slash */
  cchRes = cchPath + 1;           /* + NULL */
  zBuf = fossil_malloc(cchBuf);
  zRes = fossil_malloc(cchRes);
  ncUsed = 0;
  memcpy(zBuf,zBase,cchBase);
  if( !IS_DIRSEP(zBuf,cchBase-1) ){
    zBuf[cchBase++]=L'/';
  }
  memcpy(zBuf+cchBase,zPath,cchPath+1);
  i = j = cchBase;
  while( 1 ){
    WIN32_FIND_DATAW fd;
    HANDLE hFind;
    wchar_t *wzBuf;
    char *zCompBuf = 0;
    char *zComp = &zBuf[i];
    int cchComp;
    char chSep;
    int fDone;
    if( IS_DIRSEP(zBuf,i) ){
      if( ncUsed+2>cchRes ){  /* Directory slash + NULL*/
        cchRes += 32;         /* Overprovisioning. */
        zRes = fossil_realloc(zRes,cchRes);
      }
      zRes[ncUsed++] = zBuf[i];
      i = j = i+1;
      continue;
    }
    NEXT_DIRSEP(zBuf,j);
    fDone = zBuf[j]==0;
    chSep = zBuf[j];
    zBuf[j] = 0;                /* Truncate working buffer. */
    wzBuf = fossil_utf8_to_path(zBuf,0);
    hFind = FindFirstFileW(wzBuf,&fd);
    if( hFind!=INVALID_HANDLE_VALUE ){
      wchar_t *wzComp = fossil_utf8_to_path(zComp,0);
      FindClose(hFind);
      /* Test fd.cFileName, not fd.cAlternateFileName (classic 8.3 format). */
      if( win32_filenames_equal_nocase(wzComp,fd.cFileName) ){
        zCompBuf = fossil_path_to_utf8(fd.cFileName);
        zComp = zCompBuf;
      }
      fossil_path_free(wzComp);
    }
    fossil_path_free(wzBuf);
    cchComp = strlen(zComp);
    if( ncUsed+cchComp+1>cchRes ){  /* Current component + NULL */
      cchRes += cchComp + 32;       /* Overprovisioning. */
      zRes = fossil_realloc(zRes,cchRes);
    }
    memcpy(zRes+ncUsed,zComp,cchComp);
    ncUsed += cchComp;
    if( zCompBuf ){
      fossil_path_free(zCompBuf);
    }
    if( fDone ){
      zRes[ncUsed] = 0;
      break;
    }
    zBuf[j] = chSep;            /* Undo working buffer truncation. */
    i = j;
  }
  fossil_free(zBuf);
  return zRes;
}
#endif /* _WIN32  -- This code is for win32 only */
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** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file implements a very simple (and low-performance) HTTP server
** for windows.
** for windows. It also implements a Windows Service which allows the HTTP
** server to be run without any user logged on.
*/
#include "config.h"
#ifdef _WIN32
#ifdef __MINGW32__           /* This code is for win32 only */
#include "config.h"
#include "winhttp.h"
/* This code is for win32 only */
# if !defined(_WIN32_WINNT)
#  define _WIN32_WINNT 0x0501
# endif
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
#include <process.h>
#include "winhttp.h"

#ifndef IPV6_V6ONLY
# define IPV6_V6ONLY 27  /* Because this definition is missing in MinGW */
#endif

/*
** The SocketAddr structure holds a SOCKADDR_STORAGE and its content size.
*/
typedef struct SocketAddr SocketAddr;
struct SocketAddr {
  SOCKADDR_STORAGE addr;
  int len;
};

static char* SocketAddr_toString(const SocketAddr* pAddr){
  SocketAddr addr;
  char* zIp;
  DWORD nIp = 50;
  assert( pAddr!=NULL );
  memcpy(&addr, pAddr, sizeof(SocketAddr));
  if( addr.len==sizeof(SOCKADDR_IN6) ){
    ((SOCKADDR_IN6*)&addr)->sin6_port = 0;
  }else{
    ((SOCKADDR_IN*)&addr)->sin_port = 0;
  }
  zIp = fossil_malloc(nIp);
  if( WSAAddressToStringA((SOCKADDR*)&addr, addr.len, NULL, zIp, &nIp)!=0 ){
    zIp[0] = 0;
  }
  return zIp;
}

/*
** The DualAddr structure holds two SocketAddr (one IPv4 and on IPv6).
*/
typedef struct DualAddr DualAddr;
struct DualAddr {
  SocketAddr a4;  /* IPv4 SOCKADDR_IN */
  SocketAddr a6;  /* IPv6 SOCKADDR_IN6 */
};

static void DualAddr_init(DualAddr* pDA){
  assert( pDA!=NULL );
  memset(pDA, 0, sizeof(DualAddr));
  pDA->a4.len = sizeof(SOCKADDR_IN);
  pDA->a6.len = sizeof(SOCKADDR_IN6);
}

/*
** The DualSocket structure holds two SOCKETs. One or both could be
** used or INVALID_SOCKET.  One is dedicated to IPv4, the other to IPv6.
*/
typedef struct DualSocket DualSocket;
struct DualSocket {
  SOCKET s4;    /* IPv4 socket or INVALID_SOCKET */
  SOCKET s6;    /* IPv6 socket or INVALID_SOCKET */
};

/*
** Initializes a DualSocket.
*/
static void DualSocket_init(DualSocket* ds){
  assert( ds!=NULL );
  ds->s4 = INVALID_SOCKET;
  ds->s6 = INVALID_SOCKET;
};

/*
** Close and reset a DualSocket.
*/
static void DualSocket_close(DualSocket* ds){
  assert( ds!=NULL );
  if( ds->s4!=INVALID_SOCKET ){
    closesocket(ds->s4);
    ds->s4 = INVALID_SOCKET;
  }
  if( ds->s6!=INVALID_SOCKET ){
    closesocket(ds->s6);
    ds->s6 = INVALID_SOCKET;
  }
};

/*
** When ip is "W", listen to wildcard address (IPv4/IPv6 as available).
** When ip is "L", listen to loopback address (IPv4/IPv6 as available).
** Else listen only the specified ip, which is either IPv4 or IPv6 or invalid.
** Returns 1 on success, 0 on failure.
*/
static int DualSocket_listen(DualSocket* ds, const char* zIp, int iPort){
  SOCKADDR_IN addr4;
  SOCKADDR_IN6 addr6;
  assert( ds!=NULL && zIp!=NULL && iPort!=0 );
  DualSocket_close(ds);
  memset(&addr4, 0, sizeof(addr4));
  memset(&addr6, 0, sizeof(addr6));
  if (strcmp(zIp, "W")==0 || strcmp(zIp, "L")==0 ){
    ds->s4 = socket(AF_INET, SOCK_STREAM, 0);
    ds->s6 = socket(AF_INET6, SOCK_STREAM, 0);
    if( ds->s4==INVALID_SOCKET && ds->s6==INVALID_SOCKET ){
      return 0;
    }
    if (ds->s4!=INVALID_SOCKET ) {
      addr4.sin_family = AF_INET;
      addr4.sin_port = htons(iPort);
      if( strcmp(zIp, "L")==0 ){
        addr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
      }else{
        addr4.sin_addr.s_addr = INADDR_ANY;
      }
    }
    if( ds->s6!=INVALID_SOCKET ) {
      DWORD ipv6only = 1; /* don't want a dual-stack socket */
      setsockopt(ds->s6, IPPROTO_IPV6, IPV6_V6ONLY, (char*)&ipv6only,
                 sizeof(ipv6only));
      addr6.sin6_family = AF_INET6;
      addr6.sin6_port = htons(iPort);
      if( strcmp(zIp, "L")==0 ){
        memcpy(&addr6.sin6_addr, &in6addr_loopback, sizeof(in6addr_loopback));
      }else{
        memcpy(&addr6.sin6_addr, &in6addr_any, sizeof(in6addr_any));
      }
    }
  }else{
    if( strstr(zIp, ".") ){
      int addrlen = sizeof(addr4);
      ds->s4 = socket(AF_INET, SOCK_STREAM, 0);
      if( ds->s4==INVALID_SOCKET ){
        return 0;
      }
      addr4.sin_family = AF_INET;
      if (WSAStringToAddress((char*)zIp, AF_INET, NULL,
                             (struct sockaddr *)&addr4, &addrlen) != 0){
        return 0;
      }
      addr4.sin_port = htons(iPort);
    }else{
      DWORD ipv6only = 1; /* don't want a dual-stack socket */
      int addrlen = sizeof(addr6);
      ds->s6 = socket(AF_INET6, SOCK_STREAM, 0);
      if( ds->s6==INVALID_SOCKET ){
        return 0;
      }
      setsockopt(ds->s6, IPPROTO_IPV6, IPV6_V6ONLY, (char*)&ipv6only,
                 sizeof(ipv6only));
      addr6.sin6_family = AF_INET6;
      if (WSAStringToAddress((char*)zIp, AF_INET6, NULL,
                             (struct sockaddr *)&addr6, &addrlen) != 0){
        return 0;
      }
      addr6.sin6_port = htons(iPort);
    }
  }
  assert( ds->s4!=INVALID_SOCKET || ds->s6!=INVALID_SOCKET );
  if( ds->s4!=INVALID_SOCKET && bind(ds->s4, (struct sockaddr*)&addr4,
                                 sizeof(addr4))==SOCKET_ERROR ){
    return 0;
  }
  if( ds->s6!=INVALID_SOCKET && bind(ds->s6, (struct sockaddr*)&addr6,
                                 sizeof(addr6))==SOCKET_ERROR ){
    return 0;
  }
  if( ds->s4!=INVALID_SOCKET && listen(ds->s4, SOMAXCONN)==SOCKET_ERROR ){
    return 0;
  }
  if( ds->s6!=INVALID_SOCKET && listen(ds->s6, SOMAXCONN)==SOCKET_ERROR ){
    return 0;
  }
  return 1;
};

/*
** Accepts connections on DualSocket.
*/
static void DualSocket_accept(DualSocket* pListen, DualSocket* pClient,
                              DualAddr* pClientAddr){
  fd_set rs;
  int rs_count = 0;
  assert( pListen!=NULL && pClient!=NULL && pClientAddr!= NULL );
  DualSocket_init(pClient);
  DualAddr_init(pClientAddr);
  FD_ZERO(&rs);
  if( pListen->s4!=INVALID_SOCKET ){
    FD_SET(pListen->s4, &rs);
    ++rs_count;
  }
  if( pListen->s6!=INVALID_SOCKET ){
    FD_SET(pListen->s6, &rs);
    ++rs_count;
  }
  if( select(rs_count, &rs, 0, 0, 0 /*blocking*/)==SOCKET_ERROR ){
    return;
  }
  if( FD_ISSET(pListen->s4, &rs) ){
    pClient->s4 = accept(pListen->s4, (struct sockaddr*)&pClientAddr->a4.addr,
                         &pClientAddr->a4.len);
  }
  if( FD_ISSET(pListen->s6, &rs) ){
    pClient->s6 = accept(pListen->s6, (struct sockaddr*)&pClientAddr->a6.addr,
                         &pClientAddr->a6.len);
  }
}

/*
** The HttpServer structure holds information about an instance of
** the HTTP server itself.
*/
typedef struct HttpServer HttpServer;
struct HttpServer {
  HANDLE hStoppedEvent; /* Event to signal when server is stopped,
                        ** must be closed by callee. */
  char *zStopper;       /* The stopper file name, must be freed by
                        ** callee. */
  DualSocket listener;  /* Sockets on which the server is listening,
                        ** may be closed by callee. */
};

/*
** The HttpRequest structure holds information about each incoming
** HTTP request.
*/
typedef struct HttpRequest HttpRequest;
struct HttpRequest {
  int id;             /* ID counter */
  SOCKET s;           /* Socket on which to receive data */
  SOCKADDR_IN addr;   /* Address from which data is coming */
  const char *zNotFound;  /* --notfound option, or an empty string */
  int id;                /* ID counter */
  SOCKET s;              /* Socket on which to receive data */
  SocketAddr addr;       /* Address from which data is coming */
  int flags;             /* Flags passed to win32_http_server() */
  const char *zOptions;  /* --baseurl, --notfound, --localauth, --th-trace */
};

/*
** Prefix for a temporary file.
*/
static char *zTempPrefix;

/*
** Look at the HTTP header contained in zHdr.  Find the content
** length and return it.  Return 0 if there is no Content-Length:
** header line.
*/
static int find_content_length(const char *zHdr){
  while( *zHdr ){
    if( zHdr[0]=='\n' ){
      if( zHdr[1]=='\r' ) return 0;
      if( strncasecmp(&zHdr[1], "content-length:", 15)==0 ){
      if( fossil_strnicmp(&zHdr[1], "content-length:", 15)==0 ){
        return atoi(&zHdr[17]);
      }
    }
    zHdr++;
  }
  return 0;
}

/*
** Issue a fatal error.
*/
static NORETURN void winhttp_fatal(
  const char *zOp,
  const char *zService,
  const char *zErr
){
  fossil_fatal("unable to %s service '%s': %s", zOp, zService, zErr);
}

/*
** Make sure the server stops as soon as possible after the stopper file
** is found.  If there is no stopper file name, do nothing.
*/
static void win32_server_stopper(void *pAppData){
  HttpServer *p = (HttpServer*)pAppData;
  if( p!=0 ){
    HANDLE hStoppedEvent = p->hStoppedEvent;
    const char *zStopper = p->zStopper;
    if( hStoppedEvent!=NULL && zStopper!=0 ){
      while( 1 ){
        DWORD dwResult = WaitForMultipleObjectsEx(1, &hStoppedEvent, FALSE,
                                                  1000, TRUE);
        if( dwResult!=WAIT_IO_COMPLETION && dwResult!=WAIT_TIMEOUT ){
          /* The event is either invalid, signaled, or abandoned.  Bail
          ** out now because those conditions should indicate the parent
          ** thread is dead or dying. */
          break;
        }
        if( file_size(zStopper, ExtFILE)>=0 ){
          /* The stopper file has been found.  Attempt to close the server
          ** listener socket now and then exit. */
          DualSocket_close(&p->listener);
          break;
        }
      }
    }
    if( hStoppedEvent!=NULL ){
      CloseHandle(hStoppedEvent);
      p->hStoppedEvent = NULL;
    }
    if( zStopper!=0 ){
      fossil_free(p->zStopper);
      p->zStopper = 0;
    }
    fossil_free(p);
  }
}

/*
** Process a single incoming HTTP request.
*/
void win32_process_one_http_request(void *pAppData){
static void win32_http_request(void *pAppData){
  HttpRequest *p = (HttpRequest*)pAppData;
  FILE *in = 0, *out = 0;
  int amt, got;
  FILE *in = 0, *out = 0, *aux = 0;
  int amt, got, i;
  int wanted = 0;
  char *z;
  char *zIp;
  void *sslConn = 0;
  char zCmdFName[MAX_PATH];
  char zRequestFName[100];
  char zReplyFName[100];
  char zRequestFName[MAX_PATH];
  char zReplyFName[MAX_PATH];
  char zCmd[2000];          /* Command-line to process the request */
  char zHdr[2000];          /* The HTTP request header */
  char zBuf[65536];         /* The HTTP request header */
  const int szHdr = 4000;   /* Reduced header size */

  sqlite3_snprintf(MAX_PATH, zCmdFName,
  sprintf(zRequestFName, "%s_in%d.txt", zTempPrefix, p->id);
  sprintf(zReplyFName, "%s_out%d.txt", zTempPrefix, p->id);
                   "%s_%06d_cmd.txt", zTempPrefix, p->id);
  sqlite3_snprintf(MAX_PATH, zRequestFName,
                   "%s_%06d_in.txt", zTempPrefix, p->id);
  sqlite3_snprintf(MAX_PATH, zReplyFName,
                   "%s_%06d_out.txt", zTempPrefix, p->id);
  amt = 0;
  if( g.httpUseSSL ){
#ifdef FOSSIL_ENABLE_SSL
    sslConn = ssl_new_server(p->s);
#endif
  }
  while( amt<sizeof(zHdr) ){
    got = recv(p->s, &zHdr[amt], sizeof(zHdr)-1-amt, 0);
    if( got==SOCKET_ERROR ) goto end_request;
  while( amt<szHdr ){
    if( sslConn ){
#ifdef FOSSIL_ENABLE_SSL
      got = ssl_read_server(sslConn, &zBuf[amt], szHdr-1-amt, 0);
#endif
    }else{
      got = recv(p->s, &zBuf[amt], szHdr-1-amt, 0);
      if( got==SOCKET_ERROR ) goto end_request;
    }
    if( got==0 ){
      wanted = 0;
      break;
    }
    amt += got;
    zHdr[amt] = 0;
    z = strstr(zHdr, "\r\n\r\n");
    zBuf[amt] = 0;
    z = strstr(zBuf, "\r\n\r\n");
    if( z ){
      wanted = find_content_length(zHdr) + (&z[4]-zHdr) - amt;
      wanted = find_content_length(zBuf) + (&z[4]-zBuf) - amt;
      break;
    }else{
      z = strstr(zBuf, "\n\n");
      if( z ){
        wanted = find_content_length(zBuf) + (&z[2]-zBuf) - amt;
        break;
    }
  }
  if( amt>=sizeof(zHdr) ) goto end_request;
  out = fopen(zRequestFName, "wb");
      }
    }
  }
  if( amt>=szHdr ) goto end_request;
  out = fossil_fopen(zRequestFName, "wb");
  if( out==0 ) goto end_request;
  fwrite(zHdr, 1, amt, out);
  fwrite(zBuf, 1, amt, out);
  while( wanted>0 ){
    if( sslConn ){
#ifdef FOSSIL_ENABLE_SSL
      got = ssl_read_server(sslConn, zBuf, min(wanted, sizeof(zBuf)), 1);
#endif
    }else{
    got = recv(p->s, zHdr, sizeof(zHdr), 0);
    if( got==SOCKET_ERROR ) goto end_request;
    if( got ){
      fwrite(zHdr, 1, got, out);
      got = recv(p->s, zBuf, sizeof(zBuf), 0);
      if( got==SOCKET_ERROR ) goto end_request;
    }
    if( got>0 ){
      fwrite(zBuf, 1, got, out);
    }else{
      break;
    }
    wanted -= got;
  }

  /*
  ** The repository name is only needed if there was no open check-out.  This
  ** is designed to allow the open check-out for the interactive user to work
  ** with the local Fossil server started via the "ui" command.
  */
  zIp = SocketAddr_toString(&p->addr);
  if( (p->flags & HTTP_SERVER_HAD_CHECKOUT)==0 ){
    assert( g.zRepositoryName && g.zRepositoryName[0] );
    sqlite3_snprintf(sizeof(zCmd), zCmd, "%s--in %s\n--out %s\n--ipaddr %s\n%s",
      get_utf8_bom(0), zRequestFName, zReplyFName, zIp, g.zRepositoryName
    );
  }else{
    sqlite3_snprintf(sizeof(zCmd), zCmd, "%s--in %s\n--out %s\n--ipaddr %s",
      get_utf8_bom(0), zRequestFName, zReplyFName, zIp
    );
  }
  fossil_free(zIp);
  aux = fossil_fopen(zCmdFName, "wb");
  if( aux==0 ) goto end_request;
  fwrite(zCmd, 1, strlen(zCmd), aux);

  sqlite3_snprintf(sizeof(zCmd), zCmd,
    "\"%s\" http -args \"%s\"%s%s",
    g.nameOfExe, zCmdFName,
    g.httpUseSSL ? "" : " --nossl", p->zOptions
  );
  in = fossil_fopen(zReplyFName, "w+b");
  fflush(out);
  fflush(aux);
  if( g.fHttpTrace ){
    fossil_print("%s\n", zCmd);
  }
  fossil_system(zCmd);
  if( in ){
    while( (got = fread(zBuf, 1, sizeof(zBuf), in))>0 ){
      if( sslConn ){
#ifdef FOSSIL_ENABLE_SSL
        ssl_write_server(sslConn, zBuf, got);
#endif
      }else{
        send(p->s, zBuf, got, 0);
      }
    }
  }

end_request:
  fclose(out);
  out = 0;
  sprintf(zCmd, "\"%s\" http \"%s\" %s %s %s%s",
    g.argv[0], g.zRepositoryName, zRequestFName, zReplyFName, 
    inet_ntoa(p->addr.sin_addr), p->zNotFound
  if( out ) fclose(out);
  if( aux ) fclose(aux);
  if( in ) fclose(in);
  /* Initiate shutdown prior to closing the socket */
  if( sslConn!=0 ){
#ifdef FOSSIL_ENABLE_SSL
    ssl_close_server(sslConn);
#endif
  }
  if( shutdown(p->s,1)==0 ) shutdown(p->s,0);
  closesocket(p->s);
  /* Make multiple attempts to delete the temporary files.  Sometimes AV
  ** software keeps the files open for a few seconds, preventing the file
  ** from being deleted on the first try. */
  if( !g.fHttpTrace ){
    for(i=1; i<=10 && file_delete(zRequestFName); i++){ Sleep(1000*i); }
    for(i=1; i<=10 && file_delete(zCmdFName); i++){ Sleep(1000*i); }
    for(i=1; i<=10 && file_delete(zReplyFName); i++){ Sleep(1000*i); }
  }
  fossil_free(p);
}

/*
** Process a single incoming SCGI request.
*/
static void win32_scgi_request(void *pAppData){
  HttpRequest *p = (HttpRequest*)pAppData;
  FILE *in = 0, *out = 0;
  int amt, got, nHdr, i;
  int wanted = 0;
  char *zIp;
  char zRequestFName[MAX_PATH];
  char zReplyFName[MAX_PATH];
  char zCmd[2000];          /* Command-line to process the request */
  char zHdr[4000];          /* The SCGI request header */

  sqlite3_snprintf(MAX_PATH, zRequestFName,
                   "%s_%06d_in.txt", zTempPrefix, p->id);
  sqlite3_snprintf(MAX_PATH, zReplyFName,
                   "%s_%06d_out.txt", zTempPrefix, p->id);
  out = fossil_fopen(zRequestFName, "wb");
  if( out==0 ) goto end_request;
  amt = 0;
  got = recv(p->s, zHdr, sizeof(zHdr), 0);
  if( got==SOCKET_ERROR ) goto end_request;
  amt = fwrite(zHdr, 1, got, out);
  nHdr = 0;
  for(i=0; zHdr[i]>='0' && zHdr[i]<='9'; i++){
    nHdr = 10*nHdr + zHdr[i] - '0';
  }
  wanted = nHdr + i + 1;
  if( strcmp(zHdr+i+1, "CONTENT_LENGTH")==0 ){
    wanted += atoi(zHdr+i+15);
  }
  while( wanted>amt ){
    got = recv(p->s, zHdr, wanted<sizeof(zHdr) ? wanted : sizeof(zHdr), 0);
    if( got<=0 ) break;
    fwrite(zHdr, 1, got, out);
    wanted += got;
  }
  assert( g.zRepositoryName && g.zRepositoryName[0] );
  zIp = SocketAddr_toString(&p->addr);
  sqlite3_snprintf(sizeof(zCmd), zCmd,
    "\"%s\" http --in \"%s\" --out \"%s\" --ipaddr %s \"%s\""
    " --scgi --nossl%s",
    g.nameOfExe, zRequestFName, zReplyFName, zIp,
    g.zRepositoryName, p->zOptions
  );
  fossil_free(zIp);
  in = fossil_fopen(zReplyFName, "w+b");
  fflush(out);
  portable_system(zCmd);
  fossil_system(zCmd);
  in = fopen(zReplyFName, "rb");
  if( in ){
    while( (got = fread(zHdr, 1, sizeof(zHdr), in))>0 ){
      send(p->s, zHdr, got, 0);
    }
  }

end_request:
  if( out ) fclose(out);
  if( in ) fclose(in);
  /* Initiate shutdown prior to closing the socket */
  if( shutdown(p->s,1)==0 ) shutdown(p->s,0);
  closesocket(p->s);
  /* Make multiple attempts to delete the temporary files.  Sometimes AV
  ** software keeps the files open for a few seconds, preventing the file
  ** from being deleted on the first try. */
  unlink(zRequestFName);
  unlink(zReplyFName);
  free(p);
  for(i=1; i<=10 && file_delete(zRequestFName); i++){ Sleep(1000*i); }
  for(i=1; i<=10 && file_delete(zReplyFName); i++){ Sleep(1000*i); }
  fossil_free(p);
}

/* forward reference */
static void win32_http_service_running(DualSocket* pS);

/*
** Start a listening socket and process incoming HTTP requests on
** that socket.
*/
void win32_http_server(
  int mnPort, int mxPort,   /* Range of allowed TCP port numbers */
  const char *zBrowser,     /* Command to launch browser.  (Or NULL) */
  const char *zStopper,     /* Stop server when this file is exists (Or NULL) */
  const char *zBaseUrl,     /* The --baseurl option, or NULL */
  const char *zNotFound     /* The --notfound option, or NULL */
  const char *zNotFound,    /* The --notfound option, or NULL */
  const char *zFileGlob,    /* The --fileglob option, or NULL */
  const char *zIpAddr,      /* Bind to this IP address, if not NULL */
  int flags                 /* One or more HTTP_SERVER_ flags */
){
  HANDLE hStoppedEvent;
  WSADATA wd;
  SOCKET s = INVALID_SOCKET;
  SOCKADDR_IN addr;
  DualSocket ds;
  int idCnt = 0;
  int iPort = mnPort;
  Blob options;
  wchar_t zTmpPath[MAX_PATH];
  char *zTempSubDirPath;
  const char *zTempSubDir = "fossil";
  char *zNotFoundOption;
  const char *zSkin;
#if USE_SEE
  const char *zSavedKey = 0;
  size_t savedKeySize = 0;
#endif

  blob_zero(&options);
  if( PB("HTTPS") ){
    blob_appendf(&options, " --https");
  }
  if( zStopper ) unlink(zStopper);
  if( zBaseUrl ){
    blob_appendf(&options, " --baseurl ");
    blob_append_escaped_arg(&options, zBaseUrl, 0);
  }
  if( zNotFound ){
    zNotFoundOption = mprintf(" --notfound %s", zNotFound);
  }else{
    zNotFoundOption = "";
    blob_appendf(&options, " --notfound ");
    blob_append_escaped_arg(&options, zNotFound, 1);
  }
  if( g.zCkoutAlias ){
    blob_appendf(&options, " --ckout-alias ");
    blob_append_escaped_arg(&options, g.zCkoutAlias, 0);
  }
  if( zFileGlob ){
    blob_appendf(&options, " --files-urlenc %T", zFileGlob);
  }
  if( g.useLocalauth ){
    blob_appendf(&options, " --localauth");
  }
  if( g.thTrace ){
    blob_appendf(&options, " --th-trace");
  }
  if( flags & HTTP_SERVER_REPOLIST ){
    blob_appendf(&options, " --repolist");
  }
  if( g.zExtRoot && g.zExtRoot[0] ){
    blob_appendf(&options, " --extroot");
    blob_append_escaped_arg(&options, g.zExtRoot, 1);
  }
  zSkin = skin_in_use();
  if( zSkin ){
    blob_appendf(&options, " --skin %s", zSkin);
  }
  if( g.zMainMenuFile ){
    blob_appendf(&options, " --mainmenu ");
    blob_append_escaped_arg(&options, g.zMainMenuFile, 1);
  }
  if( builtin_get_js_delivery_mode()!=0 /* JS_INLINE==0 may change? */ ){
    blob_appendf(&options, " --jsmode ");
    blob_append_escaped_arg(&options, builtin_get_js_delivery_mode_name(), 0);
  }
#if USE_SEE
  zSavedKey = db_get_saved_encryption_key();
  savedKeySize = db_get_saved_encryption_key_size();
  if( db_is_valid_saved_encryption_key(zSavedKey, savedKeySize) ){
    blob_appendf(&options, " --usepidkey %lu:%p:%u", GetCurrentProcessId(),
                 zSavedKey, savedKeySize);
  }
#endif
  if( WSAStartup(MAKEWORD(2,0), &wd) ){
    fossil_panic("unable to initialize winsock");
  }
  if( WSAStartup(MAKEWORD(1,1), &wd) ){
    fossil_fatal("unable to initialize winsock");
  DualSocket_init(&ds);
  }
  while( iPort<=mxPort ){
    s = socket(AF_INET, SOCK_STREAM, 0);
    if( s==INVALID_SOCKET ){
    if( zIpAddr ){
      fossil_fatal("unable to create a socket");
    }
    addr.sin_family = AF_INET;
    addr.sin_port = htons(iPort);
    addr.sin_addr.s_addr = htonl(INADDR_ANY);
    if( bind(s, (struct sockaddr*)&addr, sizeof(addr))==SOCKET_ERROR ){
      closesocket(s);
      iPort++;
      continue;
    }
    if( listen(s, SOMAXCONN)==SOCKET_ERROR ){
      closesocket(s);
      iPort++;
      continue;
      if( DualSocket_listen(&ds, zIpAddr, iPort)==0 ){
        iPort++;
        continue;
      }
    }else{
      if( DualSocket_listen(&ds,
                            (flags & HTTP_SERVER_LOCALHOST) ? "L" : "W",
                            iPort
                           )==0 ){
        iPort++;
        continue;
      }
    }
    break;
  }
  if( iPort>mxPort ){
    /* These exits are merely fatal because firewall settings can cause them. */
    if( mnPort==mxPort ){
      fossil_fatal("unable to open listening socket on ports %d", mnPort);
      fossil_fatal("unable to open listening socket on port %d", mnPort);
    }else{
      fossil_fatal("unable to open listening socket on any"
                   " port in the range %d..%d", mnPort, mxPort);
    }
  }
  if( !GetTempPathW(MAX_PATH, zTmpPath) ){
    fossil_panic("unable to get path to the temporary directory.");
  }
  /* Use a subdirectory for temp files (can then be excluded from virus scan) */
  zTempSubDirPath = mprintf("%s%s\\",fossil_path_to_utf8(zTmpPath),zTempSubDir);
  if ( !file_mkdir(zTempSubDirPath, ExtFILE, 0) ||
        file_isdir(zTempSubDirPath, ExtFILE)==1 ){
    wcscpy(zTmpPath, fossil_utf8_to_path(zTempSubDirPath, 1));
  }
  if( g.fHttpTrace ){
  zTempPrefix = mprintf("fossil_server_P%d_", iPort);
  printf("Listening for HTTP requests on TCP port %d\n", iPort);
    zTempPrefix = mprintf("httptrace");
  }else{
    zTempPrefix = mprintf("%sfossil_server_P%d",
                          fossil_unicode_to_utf8(zTmpPath), iPort);
  }
  fossil_print("Temporary files: %s*\n", zTempPrefix);
  fossil_print("Listening for %s requests on TCP port %d\n",
               (flags&HTTP_SERVER_SCGI)!=0 ? "SCGI" :
               g.httpUseSSL ? "TLS-encrypted HTTPS" : "HTTP", iPort);
  if( zBrowser ){
    zBrowser = mprintf(zBrowser, iPort);
    printf("Launch webbrowser: %s\n", zBrowser);
    portable_system(zBrowser);
    zBrowser = mprintf(zBrowser /*works-like:"%d"*/, iPort);
    fossil_print("Launch webbrowser: %s\n", zBrowser);
    fossil_system(zBrowser);
  }
  printf("Type Ctrl-C to stop the HTTP server\n");
  fossil_print("Type Ctrl-C to stop the HTTP server\n");
  /* Create an event used to signal when this server is exiting. */
  hStoppedEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
  assert( hStoppedEvent!=NULL );
  /* If there is a stopper file name, start the dedicated thread now.
  ** It will attempt to close the listener socket within 1 second of
  ** the stopper file being created. */
  if( zStopper ){
    HttpServer *pServer = fossil_malloc(sizeof(HttpServer));
    memset(pServer, 0, sizeof(HttpServer));
    DuplicateHandle(GetCurrentProcess(), hStoppedEvent,
                    GetCurrentProcess(), &pServer->hStoppedEvent,
                    0, FALSE, DUPLICATE_SAME_ACCESS);
    assert( pServer->hStoppedEvent!=NULL );
    pServer->zStopper = fossil_strdup(zStopper);
    pServer->listener = ds;
    file_delete(zStopper);
    _beginthread(win32_server_stopper, 0, (void*)pServer);
  }
  /* Set the service status to running and pass the listener socket to the
  ** service handling procedures. */
  win32_http_service_running(&ds);
  for(;;){
    SOCKET client;
    SOCKADDR_IN client_addr;
    HttpRequest *p;
    int len = sizeof(client_addr);

    client = accept(s, (struct sockaddr*)&client_addr, &len);
    if( zStopper && file_size(zStopper)>=0 ){
    DualSocket client;
    DualAddr client_addr;
    HttpRequest *pRequest;
    int wsaError;

    DualSocket_accept(&ds, &client, &client_addr);
    if( client.s4==INVALID_SOCKET && client.s6==INVALID_SOCKET ){
      /* If the service control handler has closed the listener socket,
      ** cleanup and return, otherwise report a fatal error. */
      wsaError =  WSAGetLastError();
      DualSocket_close(&ds);
      if( (wsaError==WSAEINTR) || (wsaError==WSAENOTSOCK) ){
        WSACleanup();
        return;
      }else{
        WSACleanup();
        fossil_panic("error from accept()");
      }
    }
    if( client.s4!=INVALID_SOCKET ){
      pRequest = fossil_malloc(sizeof(HttpRequest));
      pRequest->id = ++idCnt;
      pRequest->s = client.s4;
      memcpy(&pRequest->addr, &client_addr.a4, sizeof(client_addr.a4));
      pRequest->flags = flags;
      pRequest->zOptions = blob_str(&options);
      if( flags & HTTP_SERVER_SCGI ){
        _beginthread(win32_scgi_request, 0, (void*)pRequest);
      }else{
        _beginthread(win32_http_request, 0, (void*)pRequest);
      }
    }
    if( client.s6!=INVALID_SOCKET ){
      pRequest = fossil_malloc(sizeof(HttpRequest));
      pRequest->id = ++idCnt;
      pRequest->s = client.s6;
      memcpy(&pRequest->addr, &client_addr.a6, sizeof(client_addr.a6));
      pRequest->flags = flags;
      pRequest->zOptions = blob_str(&options);
      if( flags & HTTP_SERVER_SCGI ){
        _beginthread(win32_scgi_request, 0, (void*)pRequest);
      }else{
        _beginthread(win32_http_request, 0, (void*)pRequest);
      }
    }
  }
  DualSocket_close(&ds);
  WSACleanup();
  SetEvent(hStoppedEvent);
  CloseHandle(hStoppedEvent);
}

/*
** The HttpService structure is used to pass information to the service main
** function and to the service control handler function.
*/
typedef struct HttpService HttpService;
struct HttpService {
  int port;                 /* Port on which the http server should run */
  const char *zBaseUrl;     /* The --baseurl option, or NULL */
  const char *zNotFound;    /* The --notfound option, or NULL */
  const char *zFileGlob;    /* The --files option, or NULL */
  int flags;                /* One or more HTTP_SERVER_ flags */
  int isRunningAsService;   /* Are we running as a service ? */
  const wchar_t *zServiceName;/* Name of the service */
  DualSocket s;             /* Sockets on which the http server listens */
};

/*
** Variables used for running as windows service.
*/
static HttpService hsData = {8080, NULL, NULL, NULL, 0, 0, NULL,
                             {INVALID_SOCKET, INVALID_SOCKET}};
static SERVICE_STATUS ssStatus;
static SERVICE_STATUS_HANDLE sshStatusHandle;

/*
** Get message string of the last system error. Return a pointer to the
** message string. Call fossil_unicode_free() to deallocate any memory used
** to store the message string when done.
*/
static char *win32_get_last_errmsg(void){
  DWORD nMsg;
  DWORD nErr = GetLastError();
  LPWSTR tmp = NULL;
  char *zMsg = NULL;

  /* Try first to get the error text in English. */
  nMsg = FormatMessageW(
           FORMAT_MESSAGE_ALLOCATE_BUFFER |
           FORMAT_MESSAGE_FROM_SYSTEM     |
           FORMAT_MESSAGE_IGNORE_INSERTS,
           NULL,
           nErr,
           MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US),
           (LPWSTR) &tmp,
           0,
           NULL
         );
  if( !nMsg ){
    /* No english, get what the system has available. */
    nMsg = FormatMessageW(
             FORMAT_MESSAGE_ALLOCATE_BUFFER |
             FORMAT_MESSAGE_FROM_SYSTEM     |
             FORMAT_MESSAGE_IGNORE_INSERTS,
             NULL,
             nErr,
             0,
             (LPWSTR) &tmp,
             0,
             NULL
           );
  }
  if( nMsg ){
    zMsg = fossil_unicode_to_utf8(tmp);
  }else{
    fossil_panic("unable to get system error message.");
  }
  if( tmp ){
    LocalFree((HLOCAL) tmp);
  }
  return zMsg;
}

/*
** Report the current status of the service to the service control manager.
** Make sure that during service startup no control codes are accepted.
*/
static void win32_report_service_status(
  DWORD dwCurrentState,     /* The current state of the service */
  DWORD dwWin32ExitCode,    /* The error code to report */
  DWORD dwWaitHint          /* The estimated time for a pending operation */
){
  if( dwCurrentState==SERVICE_START_PENDING ){
    ssStatus.dwControlsAccepted = 0;
  }else{
    ssStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP;
  }
  ssStatus.dwCurrentState = dwCurrentState;
  ssStatus.dwWin32ExitCode = dwWin32ExitCode;
  ssStatus.dwWaitHint = dwWaitHint;

  if( (dwCurrentState==SERVICE_RUNNING) ||
      (dwCurrentState==SERVICE_STOPPED) ){
    ssStatus.dwCheckPoint = 0;
  }else{
    ssStatus.dwCheckPoint++;
  }
  SetServiceStatus(sshStatusHandle, &ssStatus);
  return ;
}

/*
** Handle control codes sent from the service control manager.
** The control dispatcher in the main thread of the service process invokes
** this function whenever it receives a control request from the service
** control manager.
*/
static void WINAPI win32_http_service_ctrl(
  DWORD dwCtrlCode
){
  switch( dwCtrlCode ){
    case SERVICE_CONTROL_STOP: {
      DualSocket_close(&hsData.s);
      win32_report_service_status(SERVICE_STOP_PENDING, NO_ERROR, 0);
      break;
    }
    default: {
      break;
    }
  }
  return;
}
    if( client==INVALID_SOCKET ){
      closesocket(s);
      fossil_fatal("error from accept()");

/*
** This is the main entry point for the service.
** When the service control manager receives a request to start the service,
** it starts the service process (if it is not already running). The main
** thread of the service process calls the StartServiceCtrlDispatcher
** function with a pointer to an array of SERVICE_TABLE_ENTRY structures.
** Then the service control manager sends a start request to the service
** control dispatcher for this service process. The service control dispatcher
** creates a new thread to execute the ServiceMain function (this function)
** of the service being started.
*/
static void WINAPI win32_http_service_main(
  DWORD argc,              /* Number of arguments in argv */
  LPWSTR *argv             /* Arguments passed */
){

  /* Update the service information. */
  hsData.isRunningAsService = 1;
  if( argc>0 ){
    hsData.zServiceName = argv[0];
  }

  /* Register the service control handler function */
  sshStatusHandle = RegisterServiceCtrlHandlerW(L"", win32_http_service_ctrl);
  if( !sshStatusHandle ){
    win32_report_service_status(SERVICE_STOPPED, NO_ERROR, 0);
    return;
  }

  /* Set service specific data and report that the service is starting. */
  ssStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
  ssStatus.dwServiceSpecificExitCode = 0;
  win32_report_service_status(SERVICE_START_PENDING, NO_ERROR, 3000);

   /* Execute the http server */
  win32_http_server(hsData.port, hsData.port,
                    NULL, NULL, hsData.zBaseUrl, hsData.zNotFound,
                    hsData.zFileGlob, 0, hsData.flags);

  /* Service has stopped now. */
  win32_report_service_status(SERVICE_STOPPED, NO_ERROR, 0);
  return;
}

/*
** When running as service, update the HttpService structure with the
** listener socket and update the service status. This procedure must be
** called from the http server when he is ready to accept connections.
*/
static void win32_http_service_running(DualSocket *pS){
  if( hsData.isRunningAsService ){
    hsData.s = *pS;
    win32_report_service_status(SERVICE_RUNNING, NO_ERROR, 0);
  }
}

/*
** Try to start the http server as a windows service. If we are running in
** an interactive console session, this routine fails and returns a non zero
** integer value. When running as service, this routine does not return until
** the service is stopped. In this case, the return value is zero.
*/
int win32_http_service(
  int nPort,                /* TCP port number */
  const char *zBaseUrl,     /* The --baseurl option, or NULL */
  const char *zNotFound,    /* The --notfound option, or NULL */
  const char *zFileGlob,    /* The --files option, or NULL */
  int flags                 /* One or more HTTP_SERVER_ flags */
){
  /* Define the service table. */
  SERVICE_TABLE_ENTRYW ServiceTable[] =
    {{L"", (LPSERVICE_MAIN_FUNCTIONW)win32_http_service_main}, {NULL, NULL}};

  /* Initialize the HttpService structure. */
  hsData.port = nPort;
  hsData.zBaseUrl = zBaseUrl;
  hsData.zNotFound = zNotFound;
  hsData.zFileGlob = zFileGlob;
  hsData.flags = flags;

  if( GetStdHandle(STD_INPUT_HANDLE)!=NULL ){ return 1; }

  /* Try to start the control dispatcher thread for the service. */
  if( !StartServiceCtrlDispatcherW(ServiceTable) ){
    if( GetLastError()==ERROR_FAILED_SERVICE_CONTROLLER_CONNECT ){
      return 1;
    }else{
      fossil_fatal("error from StartServiceCtrlDispatcher()");
    }
  }
  return 0;
}

/* Duplicate #ifdef needed for mkindex */
#ifdef _WIN32
/*
** COMMAND: winsrv*
**
** Usage: %fossil winsrv METHOD ?SERVICE-NAME? ?OPTIONS?
**
** Where METHOD is one of: create delete show start stop.
**
** The winsrv command manages Fossil as a Windows service.  This allows
** (for example) Fossil to be running in the background when no user
** is logged in.
**
** In the following description of the methods, "Fossil-DSCM" will be
** used as the default SERVICE-NAME:
**
**    %fossil winsrv create ?SERVICE-NAME? ?OPTIONS?
**
**         Creates a service. Available options include:
**
**         -D|--display DISPLAY-NAME
**
**              Sets the display name of the service. This name is shown
**              by graphical interface programs. By default, the display name
**              equals to the service name.
**
**         -S|--start TYPE
**
**              Sets the start type of the service. TYPE can be "manual",
**              which means you need to start the service yourself with the
**              'fossil winsrv start' command or with the "net start" command
**              from the operating system. If TYPE is set to "auto", the service
**              will be started automatically by the system during startup.
**
**         --username USERNAME
**
**              Specifies the user account which will be used to run the
**              service. The account needs the "Logon as a service" right
**              enabled in its profile. Specify local accounts as follows:
**              ".\\USERNAME". By default, the "LocalSystem" account will be
**              used.
**
**         -W|--password PASSWORD
**
**              Password for the user account.
    p = malloc( sizeof(*p) );
    if( p==0 ){
      fossil_fatal("out of memory");
**
**         The following options are more or less the same as for the "server"
**         command and influence the behaviour of the http server:
**
**         --baseurl URL
**
**              Use URL as the base (useful for reverse proxies)
**
**         -P|--port TCPPORT
**
**              Specifies the TCP port (default port is 8080) on which the
**              server should listen.
**
**         -R|--repository REPO
**
**              Specifies the name of the repository to be served.
**              The repository option may be omitted if the working directory
**              is within an open check-out.
**              The REPOSITORY can be a directory (aka folder) that contains
**              one or more repositories with names ending in ".fossil".
    }
    p->id = ++idCnt;
    p->s = client;
    p->addr = client_addr;
    p->zNotFound = zNotFoundOption;
    _beginthread(win32_process_one_http_request, 0, (void*)p);
  }
  closesocket(s);
  WSACleanup();
}

#endif /* __MINGW32__  -- This code is for win32 only */
**              In that case, the first element of the URL is used to select
**              among the various repositories.
**
**         --notfound URL
**
**              If REPOSITORY is a directory that contains one or more
**              repositories with names of the form "*.fossil" then the
**              first element of the URL  pathname selects among the various
**              repositories. If the pathname does not select a valid
**              repository and the --notfound option is available,
**              then the server redirects (HTTP code 302) to the URL of
**              --notfound.
**
**         --localauth
**
**              Enables automatic login if the --localauth option is present
**              and the "localauth" setting is off and the connection is from
**              localhost.
**
**         --repolist
**
**              If REPOSITORY is directory, URL "/" lists all repositories.
**
**         --scgi
**
**              Create an SCGI server instead of an HTTP server
**
**
**    %fossil winsrv delete ?SERVICE-NAME?
**
**         Deletes a service. If the service is currently running, it will be
**         stopped first and then deleted.
**
**
**    %fossil winsrv show ?SERVICE-NAME?
**
**         Shows how the service is configured and its current state.
**
**
**    %fossil winsrv start ?SERVICE-NAME?
**
**         Start the service.
**
**
**    %fossil winsrv stop ?SERVICE-NAME?
**
**         Stop the service.
**
**
** NOTE: This command is available on Windows operating systems only and
**       requires administrative rights on the machine executed.
**
*/
void cmd_win32_service(void){
  int n;
  const char *zMethod;
  const char *zSvcName = "Fossil-DSCM";    /* Default service name */

  if( g.argc<3 ){
    usage("create|delete|show|start|stop ...");
  }
  zMethod = g.argv[2];
  n = strlen(zMethod);

  if( strncmp(zMethod, "create", n)==0 ){
    SC_HANDLE hScm;
    SC_HANDLE hSvc;
    SERVICE_DESCRIPTIONW
      svcDescr = {L"Fossil - Distributed Software Configuration Management"};
    DWORD dwStartType = SERVICE_DEMAND_START;
    const char *zAltBase    = find_option("baseurl", 0, 1);
    const char *zDisplay    = find_option("display", "D", 1);
    const char *zStart      = find_option("start", "S", 1);
    const char *zUsername   = find_option("username", 0, 1);
    const char *zPassword   = find_option("password", "W", 1);
    const char *zPort       = find_option("port", "P", 1);
    const char *zNotFound   = find_option("notfound", 0, 1);
    const char *zFileGlob   = find_option("files", 0, 1);
    const char *zLocalAuth  = find_option("localauth", 0, 0);
    const char *zRepository = find_repository_option();
    int useSCGI             = find_option("scgi", 0, 0)!=0;
    int allowRepoList       = find_option("repolist",0,0)!=0;
    Blob binPath;

    verify_all_options();
    if( g.argc==4 ){
      zSvcName = g.argv[3];
    }else if( g.argc>4 ){
      fossil_fatal("too many arguments for create method.");
    }
    /* Process service creation specific options. */
    if( !zDisplay ){
      zDisplay = zSvcName;
    }
    /* Per MSDN, the password parameter cannot be NULL.  Must use empty
    ** string instead (i.e. in the call to CreateServiceW). */
    if( !zPassword ){
      zPassword = "";
    }
    if( zStart ){
      if( strncmp(zStart, "auto", strlen(zStart))==0 ){
        dwStartType = SERVICE_AUTO_START;
      }else if( strncmp(zStart, "manual", strlen(zStart))==0 ){
        dwStartType = SERVICE_DEMAND_START;
      }else{
        winhttp_fatal("create", zSvcName,
                     "specify 'auto' or 'manual' for the '-S|--start' option");
      }
    }
    /* Process options for Fossil running as server. */
    if( zPort && (atoi(zPort)<=0) ){
      winhttp_fatal("create", zSvcName,
                   "port number must be in the range 1 - 65535.");
    }
    if( !zRepository ){
      db_must_be_within_tree();
    }else if( file_isdir(zRepository, ExtFILE)==1 ){
      g.zRepositoryName = mprintf("%s", zRepository);
      file_simplify_name(g.zRepositoryName, -1, 0);
    }else{
      db_open_repository(zRepository);
    }
    db_close(0);
    /* Build the fully-qualified path to the service binary file. */
    blob_zero(&binPath);
    blob_appendf(&binPath, "\"%s\" server", g.nameOfExe);
    if( zAltBase ) blob_appendf(&binPath, " --baseurl %s", zAltBase);
    if( zPort ) blob_appendf(&binPath, " --port %s", zPort);
    if( useSCGI ) blob_appendf(&binPath, " --scgi");
    if( allowRepoList ) blob_appendf(&binPath, " --repolist");
    if( zNotFound ) blob_appendf(&binPath, " --notfound \"%s\"", zNotFound);
    if( zFileGlob ) blob_appendf(&binPath, " --files-urlenc %T", zFileGlob);
    if( zLocalAuth ) blob_append(&binPath, " --localauth", -1);
    blob_appendf(&binPath, " \"%s\"", g.zRepositoryName);
    /* Create the service. */
    hScm = OpenSCManagerW(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    if( !hScm ) winhttp_fatal("create", zSvcName, win32_get_last_errmsg());
    hSvc = CreateServiceW(
             hScm,                                    /* Handle to the SCM */
             fossil_utf8_to_unicode(zSvcName),        /* Name of the service */
             fossil_utf8_to_unicode(zDisplay),        /* Display name */
             SERVICE_ALL_ACCESS,                      /* Desired access */
             SERVICE_WIN32_OWN_PROCESS,               /* Service type */
             dwStartType,                             /* Start type */
             SERVICE_ERROR_NORMAL,                    /* Error control */
             fossil_utf8_to_unicode(blob_str(&binPath)), /* Binary path */
             NULL,                                    /* Load ordering group */
             NULL,                                    /* Tag value */
             NULL,                                    /* Service dependencies */
             zUsername ? fossil_utf8_to_unicode(zUsername) : 0, /* Account */
             fossil_utf8_to_unicode(zPassword)        /* Account password */
           );
    if( !hSvc ) winhttp_fatal("create", zSvcName, win32_get_last_errmsg());
    /* Set the service description. */
    ChangeServiceConfig2W(hSvc, SERVICE_CONFIG_DESCRIPTION, &svcDescr);
    fossil_print("Service '%s' successfully created.\n", zSvcName);
    CloseServiceHandle(hSvc);
    CloseServiceHandle(hScm);
  }else
  if( strncmp(zMethod, "delete", n)==0 ){
    SC_HANDLE hScm;
    SC_HANDLE hSvc;
    SERVICE_STATUS sstat;

    verify_all_options();
    if( g.argc==4 ){
      zSvcName = g.argv[3];
    }else if( g.argc>4 ){
      fossil_fatal("too many arguments for delete method.");
    }
    hScm = OpenSCManagerW(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    if( !hScm ) winhttp_fatal("delete", zSvcName, win32_get_last_errmsg());
    hSvc = OpenServiceW(hScm, fossil_utf8_to_unicode(zSvcName),
                        SERVICE_ALL_ACCESS);
    if( !hSvc ) winhttp_fatal("delete", zSvcName, win32_get_last_errmsg());
    QueryServiceStatus(hSvc, &sstat);
    if( sstat.dwCurrentState!=SERVICE_STOPPED ){
      fossil_print("Stopping service '%s'", zSvcName);
      if( sstat.dwCurrentState!=SERVICE_STOP_PENDING ){
        if( !ControlService(hSvc, SERVICE_CONTROL_STOP, &sstat) ){
          winhttp_fatal("delete", zSvcName, win32_get_last_errmsg());
        }
        QueryServiceStatus(hSvc, &sstat);
      }
      while( sstat.dwCurrentState==SERVICE_STOP_PENDING  ||
             sstat.dwCurrentState==SERVICE_RUNNING ){
        Sleep(100);
        fossil_print(".");
        QueryServiceStatus(hSvc, &sstat);
      }
      if( sstat.dwCurrentState==SERVICE_STOPPED ){
        fossil_print("\nService '%s' stopped.\n", zSvcName);
      }else{
        winhttp_fatal("delete", zSvcName, win32_get_last_errmsg());
      }
    }
    if( !DeleteService(hSvc) ){
      if( GetLastError()==ERROR_SERVICE_MARKED_FOR_DELETE ){
        fossil_warning("Service '%s' already marked for delete.\n", zSvcName);
      }else{
        winhttp_fatal("delete", zSvcName, win32_get_last_errmsg());
      }
    }else{
      fossil_print("Service '%s' successfully deleted.\n", zSvcName);
    }
    CloseServiceHandle(hSvc);
    CloseServiceHandle(hScm);
  }else
  if( strncmp(zMethod, "show", n)==0 ){
    SC_HANDLE hScm;
    SC_HANDLE hSvc;
    SERVICE_STATUS sstat;
    LPQUERY_SERVICE_CONFIGW pSvcConfig;
    LPSERVICE_DESCRIPTIONW pSvcDescr;
    BOOL bStatus;
    DWORD nRequired;
    static const char *const zSvcTypes[] = {
      "Driver service",
      "File system driver service",
      "Service runs in its own process",
      "Service shares a process with other services",
      "Service can interact with the desktop"
    };
    const char *zSvcType = "";
    static const char *const zSvcStartTypes[] = {
      "Started by the system loader",
      "Started by the IoInitSystem function",
      "Started automatically by the service control manager",
      "Started manually",
      "Service cannot be started"
    };
    const char *zSvcStartType = "";
    static const char *const zSvcStates[] = {
      "Stopped", "Starting", "Stopping", "Running",
      "Continue pending", "Pause pending", "Paused"
    };
    const char *zSvcState = "";

    verify_all_options();
    if( g.argc==4 ){
      zSvcName = g.argv[3];
    }else if( g.argc>4 ){
      fossil_fatal("too many arguments for show method.");
    }
    hScm = OpenSCManagerW(NULL, NULL, GENERIC_READ);
    if( !hScm ) winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    hSvc = OpenServiceW(hScm, fossil_utf8_to_unicode(zSvcName), GENERIC_READ);
    if( !hSvc ) winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    /* Get the service configuration */
    bStatus = QueryServiceConfigW(hSvc, NULL, 0, &nRequired);
    if( !bStatus && GetLastError()!=ERROR_INSUFFICIENT_BUFFER ){
      winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    }
    pSvcConfig = fossil_malloc(nRequired);
    bStatus = QueryServiceConfigW(hSvc, pSvcConfig, nRequired, &nRequired);
    if( !bStatus ) winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    /* Translate the service type */
    switch( pSvcConfig->dwServiceType ){
      case SERVICE_KERNEL_DRIVER:       zSvcType = zSvcTypes[0]; break;
      case SERVICE_FILE_SYSTEM_DRIVER:  zSvcType = zSvcTypes[1]; break;
      case SERVICE_WIN32_OWN_PROCESS:   zSvcType = zSvcTypes[2]; break;
      case SERVICE_WIN32_SHARE_PROCESS: zSvcType = zSvcTypes[3]; break;
      case SERVICE_INTERACTIVE_PROCESS: zSvcType = zSvcTypes[4]; break;
    }
    /* Translate the service start type */
    switch( pSvcConfig->dwStartType ){
      case SERVICE_BOOT_START:    zSvcStartType = zSvcStartTypes[0]; break;
      case SERVICE_SYSTEM_START:  zSvcStartType = zSvcStartTypes[1]; break;
      case SERVICE_AUTO_START:    zSvcStartType = zSvcStartTypes[2]; break;
      case SERVICE_DEMAND_START:  zSvcStartType = zSvcStartTypes[3]; break;
      case SERVICE_DISABLED:      zSvcStartType = zSvcStartTypes[4]; break;
    }
    /* Get the service description. */
    bStatus = QueryServiceConfig2W(hSvc, SERVICE_CONFIG_DESCRIPTION,
                                  NULL, 0, &nRequired);
    if( !bStatus && GetLastError()!=ERROR_INSUFFICIENT_BUFFER ){
      winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    }
    pSvcDescr = fossil_malloc(nRequired);
    bStatus = QueryServiceConfig2W(hSvc, SERVICE_CONFIG_DESCRIPTION,
                                  (LPBYTE)pSvcDescr, nRequired, &nRequired);
    if( !bStatus ) winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    /* Retrieves the current status of the specified service. */
    bStatus = QueryServiceStatus(hSvc, &sstat);
    if( !bStatus ) winhttp_fatal("show", zSvcName, win32_get_last_errmsg());
    /* Translate the current state. */
    switch( sstat.dwCurrentState ){
      case SERVICE_STOPPED:          zSvcState = zSvcStates[0]; break;
      case SERVICE_START_PENDING:    zSvcState = zSvcStates[1]; break;
      case SERVICE_STOP_PENDING:     zSvcState = zSvcStates[2]; break;
      case SERVICE_RUNNING:          zSvcState = zSvcStates[3]; break;
      case SERVICE_CONTINUE_PENDING: zSvcState = zSvcStates[4]; break;
      case SERVICE_PAUSE_PENDING:    zSvcState = zSvcStates[5]; break;
      case SERVICE_PAUSED:           zSvcState = zSvcStates[6]; break;
    }
    /* Print service information to terminal */
    fossil_print("Service name .......: %s\n", zSvcName);
    fossil_print("Display name .......: %s\n",
                 fossil_unicode_to_utf8(pSvcConfig->lpDisplayName));
    fossil_print("Service description : %s\n",
                 fossil_unicode_to_utf8(pSvcDescr->lpDescription));
    fossil_print("Service type .......: %s.\n", zSvcType);
    fossil_print("Service start type .: %s.\n", zSvcStartType);
    fossil_print("Binary path name ...: %s\n",
                 fossil_unicode_to_utf8(pSvcConfig->lpBinaryPathName));
    fossil_print("Service username ...: %s\n",
                 fossil_unicode_to_utf8(pSvcConfig->lpServiceStartName));
    fossil_print("Current state ......: %s.\n", zSvcState);
    /* Cleanup */
    fossil_free(pSvcConfig);
    fossil_free(pSvcDescr);
    CloseServiceHandle(hSvc);
    CloseServiceHandle(hScm);
  }else
  if( strncmp(zMethod, "start", n)==0 ){
    SC_HANDLE hScm;
    SC_HANDLE hSvc;
    SERVICE_STATUS sstat;

    verify_all_options();
    if( g.argc==4 ){
      zSvcName = g.argv[3];
    }else if( g.argc>4 ){
      fossil_fatal("too many arguments for start method.");
    }
    hScm = OpenSCManagerW(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    if( !hScm ) winhttp_fatal("start", zSvcName, win32_get_last_errmsg());
    hSvc = OpenServiceW(hScm, fossil_utf8_to_unicode(zSvcName),
                        SERVICE_ALL_ACCESS);
    if( !hSvc ) winhttp_fatal("start", zSvcName, win32_get_last_errmsg());
    QueryServiceStatus(hSvc, &sstat);
    if( sstat.dwCurrentState!=SERVICE_RUNNING ){
      fossil_print("Starting service '%s'", zSvcName);
      if( sstat.dwCurrentState!=SERVICE_START_PENDING ){
        if( !StartServiceW(hSvc, 0, NULL) ){
          winhttp_fatal("start", zSvcName, win32_get_last_errmsg());
        }
        QueryServiceStatus(hSvc, &sstat);
      }
      while( sstat.dwCurrentState==SERVICE_START_PENDING ||
             sstat.dwCurrentState==SERVICE_STOPPED ){
        Sleep(100);
        fossil_print(".");
        QueryServiceStatus(hSvc, &sstat);
      }
      if( sstat.dwCurrentState==SERVICE_RUNNING ){
        fossil_print("\nService '%s' started.\n", zSvcName);
      }else{
        winhttp_fatal("start", zSvcName, win32_get_last_errmsg());
      }
    }else{
      fossil_print("Service '%s' is already started.\n", zSvcName);
    }
    CloseServiceHandle(hSvc);
    CloseServiceHandle(hScm);
  }else
  if( strncmp(zMethod, "stop", n)==0 ){
    SC_HANDLE hScm;
    SC_HANDLE hSvc;
    SERVICE_STATUS sstat;

    verify_all_options();
    if( g.argc==4 ){
      zSvcName = g.argv[3];
    }else if( g.argc>4 ){
      fossil_fatal("too many arguments for stop method.");
    }
    hScm = OpenSCManagerW(NULL, NULL, SC_MANAGER_ALL_ACCESS);
    if( !hScm ) winhttp_fatal("stop", zSvcName, win32_get_last_errmsg());
    hSvc = OpenServiceW(hScm, fossil_utf8_to_unicode(zSvcName),
                        SERVICE_ALL_ACCESS);
    if( !hSvc ) winhttp_fatal("stop", zSvcName, win32_get_last_errmsg());
    QueryServiceStatus(hSvc, &sstat);
    if( sstat.dwCurrentState!=SERVICE_STOPPED ){
      fossil_print("Stopping service '%s'", zSvcName);
      if( sstat.dwCurrentState!=SERVICE_STOP_PENDING ){
        if( !ControlService(hSvc, SERVICE_CONTROL_STOP, &sstat) ){
          winhttp_fatal("stop", zSvcName, win32_get_last_errmsg());
        }
        QueryServiceStatus(hSvc, &sstat);
      }
      while( sstat.dwCurrentState==SERVICE_STOP_PENDING ||
             sstat.dwCurrentState==SERVICE_RUNNING ){
        Sleep(100);
        fossil_print(".");
        QueryServiceStatus(hSvc, &sstat);
      }
      if( sstat.dwCurrentState==SERVICE_STOPPED ){
        fossil_print("\nService '%s' stopped.\n", zSvcName);
      }else{
        winhttp_fatal("stop", zSvcName, win32_get_last_errmsg());
      }
    }else{
      fossil_print("Service '%s' is already stopped.\n", zSvcName);
    }
    CloseServiceHandle(hSvc);
    CloseServiceHandle(hScm);
  }else
  {
    fossil_fatal("METHOD should be one of:"
                 " create delete show start stop");
  }
  return;
}
#endif /* _WIN32 -- dupe needed for mkindex */
#endif /* _WIN32 -- This code is for win32 only */
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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the file transfer protocol.
*/
#include "config.h"
#include "xfer.h"

#include <time.h>

/*
** Maximum number of HTTP redirects that any http_exchange() call will
** follow before throwing a fatal error. Most browsers use a limit of 20.
*/
#define MAX_REDIRECTS 20

/*
** This structure holds information about the current state of either
** a client or a server that is participating in xfer.
*/
typedef struct Xfer Xfer;
struct Xfer {
  Blob *pIn;          /* Input text from the other side */
  Blob *pOut;         /* Compose our reply here */
  Blob line;          /* The current line of input */
  Blob aToken[5];     /* Tokenized version of line */
  Blob aToken[6];     /* Tokenized version of line */
  Blob err;           /* Error message text */
  int nToken;         /* Number of tokens in line */
  int nIGotSent;      /* Number of "igot" cards sent */
  int nPrivIGot;      /* Number of private "igot" cards */
  int nGimmeSent;     /* Number of gimme cards sent */
  int nFileSent;      /* Number of files sent */
  int nDeltaSent;     /* Number of deltas sent */
  int nFileRcvd;      /* Number of files received */
  int nDeltaRcvd;     /* Number of deltas received */
  int nDanglingFile;  /* Number of dangling deltas received */
  int mxSend;         /* Stop sending "file" with pOut reaches this size */
  int mxSend;         /* Stop sending "file" when pOut reaches this size */
  int resync;         /* Send igot cards for all holdings */
  u8 syncPrivate;     /* True to enable syncing private content */
  u8 nextIsPrivate;   /* If true, next "file" received is a private */
  u32 remoteVersion;  /* Version of fossil running on the other side */
  u32 remoteDate;     /* Date for specific client software edition */
  u32 remoteTime;     /* Time of date correspoding on remoteDate */
  time_t maxTime;     /* Time when this transfer should be finished */
};


/*
** The input blob contains a UUID.  Convert it into a record ID.
** The input blob contains an artifact.  Convert it into a record ID.
** Create a phantom record if no prior record exists and
** phantomize is true.
**
** Compare to uuid_to_rid().  This routine takes a blob argument
** and does less error checking.
*/
static int rid_from_uuid(Blob *pUuid, int phantomize){
static int rid_from_uuid(Blob *pUuid, int phantomize, int isPrivate){
  static Stmt q;
  int rid;

  db_static_prepare(&q, "SELECT rid FROM blob WHERE uuid=:uuid");
  db_bind_str(&q, ":uuid", pUuid);
  if( db_step(&q)==SQLITE_ROW ){
    rid = db_column_int(&q, 0);
  }else{
    rid = 0;
  }
  db_reset(&q);
  if( rid==0 && phantomize ){
    rid = content_new(blob_str(pUuid));
    rid = content_new(blob_str(pUuid), isPrivate);
  }
  return rid;
}

/*
** Remember that the other side of the connection already has a copy
** of the file rid.
*/
static void remote_has(int rid){
  if( rid ){
    static Stmt q;
  if( rid ) db_multi_exec("INSERT OR IGNORE INTO onremote VALUES(%d)", rid);
    db_static_prepare(&q, "INSERT OR IGNORE INTO onremote VALUES(:r)");
    db_bind_int(&q, ":r", rid);
    db_step(&q);
    db_reset(&q);
  }
}

/*
** Remember that the other side of the connection lacks a copy of
** the artifact with the given hash.
*/
static void remote_unk(Blob *pHash){
  static Stmt q;
  db_static_prepare(&q, "INSERT OR IGNORE INTO unk VALUES(:h)");
  db_bind_text(&q, ":h", blob_str(pHash));
  db_step(&q);
  db_reset(&q);
}

/*
** The aToken[0..nToken-1] blob array is a parse of a "file" line 
** The aToken[0..nToken-1] blob array is a parse of a "file" line
** message.  This routine finishes parsing that message and does
** a record insert of the file.
**
** The file line is in one of the following two forms:
**
**      file UUID SIZE \n CONTENT
**      file UUID DELTASRC SIZE \n CONTENT
**      file HASH SIZE \n CONTENT
**      file HASH DELTASRC SIZE \n CONTENT
**
** The content is SIZE bytes immediately following the newline.
** If DELTASRC exists, then the CONTENT is a delta against the
** content of DELTASRC.
**
** If any error occurs, write a message into pErr which has already
** be initialized to an empty string.
**
** Any artifact successfully received by this routine is considered to
** be public and is therefore removed from the "private" table.
*/
static void xfer_accept_file(Xfer *pXfer){
static void xfer_accept_file(
  Xfer *pXfer,
  int cloneFlag,
  char **pzUuidList,
  int *pnUuidList
){
  int n;
  int rid;
  int srcid = 0;
  Blob content, hash;
  
  if( pXfer->nToken<3 
  Blob content;
  int isPriv;
  Blob *pUuid;

  isPriv = pXfer->nextIsPrivate;
  pXfer->nextIsPrivate = 0;
  if( pXfer->nToken<3
   || pXfer->nToken>4
   || !blob_is_uuid(&pXfer->aToken[1])
   || !blob_is_hname(&pXfer->aToken[1])
   || !blob_is_int(&pXfer->aToken[pXfer->nToken-1], &n)
   || n<0
   || (pXfer->nToken==4 && !blob_is_uuid(&pXfer->aToken[2]))
   || (pXfer->nToken==4 && !blob_is_hname(&pXfer->aToken[2]))
  ){
    blob_appendf(&pXfer->err, "malformed file line");
    return;
  }
  blob_zero(&content);
  blob_zero(&hash);
  blob_extract(pXfer->pIn, n, &content);
  pUuid = &pXfer->aToken[1];
  if( uuid_is_shunned(blob_str(&pXfer->aToken[1])) ){
  if( !cloneFlag && uuid_is_shunned(blob_str(pUuid)) ){
    /* Ignore files that have been shunned */
    blob_reset(&content);
    return;
  }
  if( isPriv && !g.perm.Private ){
    /* Do not accept private files if not authorized */
    blob_reset(&content);
    return;
  }
  if( cloneFlag ){
  if( pXfer->nToken==4 ){
    Blob src;
    srcid = rid_from_uuid(&pXfer->aToken[2], 1);
    if( pXfer->nToken==4 ){
      srcid = rid_from_uuid(&pXfer->aToken[2], 1, isPriv);
      pXfer->nDeltaRcvd++;
    }else{
      srcid = 0;
      pXfer->nFileRcvd++;
    }
    rid = content_put_ex(&content, blob_str(pUuid), srcid,
                         0, isPriv);
    Th_AppendToList(pzUuidList, pnUuidList, blob_str(pUuid),
                    blob_size(pUuid));
    remote_has(rid);
    blob_reset(&content);
    return;
  }
  if( pXfer->nToken==4 ){
    Blob src, next;
    srcid = rid_from_uuid(&pXfer->aToken[2], 1, isPriv);
    if( content_get(srcid, &src)==0 ){
      rid = content_put(&content, blob_str(&pXfer->aToken[1]), srcid);
      rid = content_put_ex(&content, blob_str(pUuid), srcid,
                           0, isPriv);
      Th_AppendToList(pzUuidList, pnUuidList, blob_str(pUuid),
                      blob_size(pUuid));
      pXfer->nDanglingFile++;
      db_multi_exec("DELETE FROM phantom WHERE rid=%d", rid);
      content_make_public(rid);
      if( !isPriv ) content_make_public(rid);
      blob_reset(&src);
      blob_reset(&content);
      return;
    }
    pXfer->nDeltaRcvd++;
    blob_delta_apply(&src, &content, &content);
    blob_delta_apply(&src, &content, &next);
    blob_reset(&src);
    blob_reset(&content);
    content = next;
  }else{
    pXfer->nFileRcvd++;
  }
  sha1sum_blob(&content, &hash);
  if( hname_verify_hash(&content, blob_buffer(pUuid), blob_size(pUuid))==0 ){
  if( !blob_eq_str(&pXfer->aToken[1], blob_str(&hash), -1) ){
    blob_appendf(&pXfer->err, "content does not match sha1 hash");
    blob_appendf(&pXfer->err, "wrong hash on received artifact: %b", pUuid);
  }
  rid = content_put(&content, blob_str(&hash), 0);
  blob_reset(&hash);
  rid = content_put_ex(&content, blob_str(pUuid), 0, 0, isPriv);
  Th_AppendToList(pzUuidList, pnUuidList, blob_str(pUuid), blob_size(pUuid));
  if( rid==0 ){
    blob_appendf(&pXfer->err, "%s", g.zErrMsg);
    blob_reset(&content);
  }else{
    content_make_public(rid);
    manifest_crosslink(rid, &content);
    if( !isPriv ) content_make_public(rid);
    manifest_crosslink(rid, &content, MC_NO_ERRORS);
  }
  assert( blob_is_reset(&content) );
  remote_has(rid);
}

/*
** The aToken[0..nToken-1] blob array is a parse of a "cfile" line
** message.  This routine finishes parsing that message and does
** a record insert of the file.  The difference between "file" and
** "cfile" is that with "cfile" the content is already compressed.
**
** The file line is in one of the following two forms:
**
**      cfile HASH USIZE CSIZE \n CONTENT
**      cfile HASH DELTASRC USIZE CSIZE \n CONTENT
**
** The content is CSIZE bytes immediately following the newline.
** If DELTASRC exists, then the CONTENT is a delta against the
** content of DELTASRC.
**
** The original size of the HASH artifact is USIZE.
**
** If any error occurs, write a message into pErr which has already
** be initialized to an empty string.
**
** Any artifact successfully received by this routine is considered to
** be public and is therefore removed from the "private" table.
*/
static void xfer_accept_compressed_file(
  Xfer *pXfer,
  char **pzUuidList,
  int *pnUuidList
){
  int szC;   /* CSIZE */
  int szU;   /* USIZE */
  int rid;
  int srcid = 0;
  Blob content;
  int isPriv;

  isPriv = pXfer->nextIsPrivate;
  pXfer->nextIsPrivate = 0;
  if( pXfer->nToken<4
   || pXfer->nToken>5
   || !blob_is_hname(&pXfer->aToken[1])
   || !blob_is_int(&pXfer->aToken[pXfer->nToken-2], &szU)
   || !blob_is_int(&pXfer->aToken[pXfer->nToken-1], &szC)
   || szC<0 || szU<0
   || (pXfer->nToken==5 && !blob_is_hname(&pXfer->aToken[2]))
  ){
    blob_appendf(&pXfer->err, "malformed cfile line");
    return;
  }
  if( isPriv && !g.perm.Private ){
    /* Do not accept private files if not authorized */
    return;
  }
  blob_zero(&content);
  blob_extract(pXfer->pIn, szC, &content);
  if( uuid_is_shunned(blob_str(&pXfer->aToken[1])) ){
    /* Ignore files that have been shunned */
    blob_reset(&content);
    return;
  }
  if( pXfer->nToken==5 ){
    srcid = rid_from_uuid(&pXfer->aToken[2], 1, isPriv);
    pXfer->nDeltaRcvd++;
  }else{
    srcid = 0;
    pXfer->nFileRcvd++;
  }
  rid = content_put_ex(&content, blob_str(&pXfer->aToken[1]), srcid,
                       szC, isPriv);
  Th_AppendToList(pzUuidList, pnUuidList, blob_str(&pXfer->aToken[1]),
                  blob_size(&pXfer->aToken[1]));
  remote_has(rid);
  blob_reset(&content);
}

/*
** The aToken[0..nToken-1] blob array is a parse of a "uvfile" line
** message.  This routine finishes parsing that message and adds the
** unversioned file to the "unversioned" table.
**
** The file line is in one of the following two forms:
**
**      uvfile NAME MTIME HASH SIZE FLAGS
**      uvfile NAME MTIME HASH SIZE FLAGS \n CONTENT
**
** If the 0x0001 bit of FLAGS is set, that means the file has been
** deleted, SIZE is zero, the HASH is "-", and the "\n CONTENT" is omitted.
**
** SIZE is the number of bytes of CONTENT.  The CONTENT is uncompressed.
** HASH is the artifact hash of CONTENT.
**
** If the 0x0004 bit of FLAGS is set, that means the CONTENT is omitted.
** The sender might have omitted the content because it is too big to
** transmit, or because it is unchanged and this record exists purely
** to update the MTIME.
*/
static void xfer_accept_unversioned_file(Xfer *pXfer, int isWriter){
  sqlite3_int64 mtime;    /* The MTIME */
  Blob *pHash;            /* The HASH value */
  int sz;                 /* The SIZE */
  int flags;              /* The FLAGS */
  Blob content;           /* The CONTENT */
  Blob x;                 /* Compressed content */
  Stmt q;                 /* SQL statements for comparison and insert */
  int isDelete;           /* HASH is "-" indicating this is a delete */
  int nullContent;        /* True of CONTENT is NULL */
  int iStatus;            /* Result from unversioned_status() */

  pHash = &pXfer->aToken[3];
  if( pXfer->nToken==5
   || !blob_is_filename(&pXfer->aToken[1])
   || !blob_is_int64(&pXfer->aToken[2], &mtime)
   || (!blob_eq(pHash,"-") && !blob_is_hname(pHash))
   || !blob_is_int(&pXfer->aToken[4], &sz)
   || !blob_is_int(&pXfer->aToken[5], &flags)
   || (mtime<0 || sz<0 || flags<0)
  ){
    blob_appendf(&pXfer->err, "malformed uvfile line");
    return;
  }
  blob_init(&content, 0, 0);
  blob_init(&x, 0, 0);
  if( sz>0 && (flags & 0x0005)==0 ){
    blob_extract(pXfer->pIn, sz, &content);
    nullContent = 0;
    if( hname_verify_hash(&content, blob_buffer(pHash), blob_size(pHash))==0 ){
      blob_appendf(&pXfer->err, "in uvfile line, HASH does not match CONTENT");
      goto end_accept_unversioned_file;
    }
  }else{
    nullContent = 1;
  }

  /* The isWriter flag must be true in order to land the new file */
  if( !isWriter ){
    blob_appendf(&pXfer->err,"Write permissions for unversioned files missing");
    goto end_accept_unversioned_file;
  }

  /* Make sure we have a valid g.rcvid marker */
  content_rcvid_init(0);

  /* Check to see if current content really should be overwritten.  Ideally,
  ** a uvfile card should never have been sent unless the overwrite should
  ** occur.  But do not trust the sender.  Double-check.
  */
  iStatus = unversioned_status(blob_str(&pXfer->aToken[1]), mtime,
                               blob_str(pHash));
  if( iStatus>=3 ) goto end_accept_unversioned_file;

  /* Store the content */
  isDelete = blob_eq(pHash, "-");
  if( isDelete ){
    db_prepare(&q,
      "UPDATE unversioned"
      "   SET rcvid=:rcvid, mtime=:mtime, hash=NULL,"
      "       sz=0, encoding=0, content=NULL"
      " WHERE name=:name"
    );
    db_bind_int(&q, ":rcvid", g.rcvid);
  }else if( iStatus==2 ){
    db_prepare(&q, "UPDATE unversioned SET mtime=:mtime WHERE name=:name");
  }else{
    db_prepare(&q,
      "REPLACE INTO unversioned(name,rcvid,mtime,hash,sz,encoding,content)"
      " VALUES(:name,:rcvid,:mtime,:hash,:sz,:encoding,:content)"
    );
    db_bind_int(&q, ":rcvid", g.rcvid);
    db_bind_text(&q, ":hash", blob_str(pHash));
    db_bind_int(&q, ":sz", blob_size(&content));
    if( !nullContent ){
      blob_compress(&content, &x);
      if( blob_size(&x) < 0.8*blob_size(&content) ){
        db_bind_blob(&q, ":content", &x);
        db_bind_int(&q, ":encoding", 1);
      }else{
        db_bind_blob(&q, ":content", &content);
        db_bind_int(&q, ":encoding", 0);
      }
    }else{
      db_bind_int(&q, ":encoding", 0);
    }
  }
  db_bind_text(&q, ":name", blob_str(&pXfer->aToken[1]));
  db_bind_int64(&q, ":mtime", mtime);
  db_step(&q);
  db_finalize(&q);
  db_unset("uv-hash", 0);

end_accept_unversioned_file:
  blob_reset(&x);
  blob_reset(&content);
}

/*
** Try to send a file as a delta against its parent.
** If successful, return the number of bytes in the delta.
** If we cannot generate an appropriate delta, then send
** nothing and return zero.
**
** Never send a delta against a private artifact.
*/
static int send_delta_parent(
  Xfer *pXfer,            /* The transfer context */
  int rid,                /* record id of the file to send */
  int isPrivate,          /* True if rid is a private artifact */
  Blob *pContent,         /* The content of the file to send */
  Blob *pUuid             /* The UUID of the file to send */
  Blob *pUuid             /* The HASH of the file to send */
){
  static const char *azQuery[] = {
  static const char *const azQuery[] = {
    "SELECT pid FROM plink x"
    " WHERE cid=%d"
    "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=pid)"
    "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=pid)",
    "   AND NOT EXISTS(SELECT 1 FROM plink y"
                      " WHERE y.pid=x.cid AND y.cid=x.pid)",

    "SELECT pid FROM mlink x"
    "SELECT pid, min(mtime) FROM mlink, event ON mlink.mid=event.objid"
    " WHERE fid=%d"
    "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=pid)"
    "   AND NOT EXISTS(SELECT 1 FROM mlink y"
                     "  WHERE y.pid=x.fid AND y.fid=x.pid)"
  };
  int i;
  Blob src, delta;
  int size = 0;
  int srcId = 0;

  for(i=0; srcId==0 && i<count(azQuery); i++){
    srcId = db_int(0, azQuery[i], rid);
    srcId = db_int(0, azQuery[i] /*works-like:"%d"*/, rid);
  }
  if( srcId>0
   && (pXfer->syncPrivate || !content_is_private(srcId))
  if( srcId>0 && !content_is_private(srcId) && content_get(srcId, &src) ){
   && content_get(srcId, &src)
  ){
    char *zUuid = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", srcId);
    blob_delta_create(&src, pContent, &delta);
    size = blob_size(&delta);
    if( size>=blob_size(pContent)-50 ){
    if( size>=(int)blob_size(pContent)-50 ){
      size = 0;
    }else if( uuid_is_shunned(zUuid) ){
      size = 0;
    }else{
       if( isPrivate ) blob_append(pXfer->pOut, "private\n", -1);
      blob_appendf(pXfer->pOut, "file %b %s %d\n", pUuid, zUuid, size);
      blob_append(pXfer->pOut, blob_buffer(&delta), size);
      /* blob_appendf(pXfer->pOut, "\n", 1); */
    }
    blob_reset(&delta);
    free(zUuid);
    blob_reset(&src);
  }
  return size;
}

/*
** Try to send a file as a native delta.  
** Try to send a file as a native delta.
** If successful, return the number of bytes in the delta.
** If we cannot generate an appropriate delta, then send
** nothing and return zero.
**
** Never send a delta against a private artifact.
*/
static int send_delta_native(
  Xfer *pXfer,            /* The transfer context */
  int rid,                /* record id of the file to send */
  int isPrivate,          /* True if rid is a private artifact */
  Blob *pUuid             /* The UUID of the file to send */
  Blob *pUuid             /* The HASH of the file to send */
){
  Blob src, delta;
  int size = 0;
  int srcId;

  srcId = db_int(0, "SELECT srcid FROM delta WHERE rid=%d", rid);
  if( srcId>0 && !content_is_private(srcId) ){
  if( srcId>0
   && (pXfer->syncPrivate || !content_is_private(srcId))
  ){
    blob_zero(&src);
    db_blob(&src, "SELECT uuid FROM blob WHERE rid=%d", srcId);
    if( uuid_is_shunned(blob_str(&src)) ){
      blob_reset(&src);
      return 0;
    }
    blob_zero(&delta);
    db_blob(&delta, "SELECT content FROM blob WHERE rid=%d", rid);
    blob_uncompress(&delta, &delta);
    if( isPrivate ) blob_append(pXfer->pOut, "private\n", -1);
    blob_appendf(pXfer->pOut, "file %b %b %d\n",
                pUuid, &src, blob_size(&delta));
    blob_append(pXfer->pOut, blob_buffer(&delta), blob_size(&delta));
    size = blob_size(&delta);
    blob_reset(&delta);
    blob_reset(&src);
  }else{
    size = 0;
  }
  return size;
}

/*
** Push an error message to alert the older client that the repository
** has SHA3 content and cannot be synced or cloned.
*/
static void xfer_cannot_send_sha3_error(Xfer *pXfer){
  blob_appendf(pXfer->pOut,
    "error Fossil\\sversion\\s2.0\\sor\\slater\\srequired.\n"
  );
}


/*
** Send the file identified by rid.
**
** The pUuid can be NULL in which case the correct UUID is computed
** The pUuid can be NULL in which case the correct hash is computed
** from the rid.
**
** Try to send the file as a native delta if nativeDelta is true, or
** as a parent delta if nativeDelta is false.
**
** It should never be the case that rid is a private artifact.  But
** as a precaution, this routine does check on rid and if it is private
** this routine becomes a no-op.
*/
static void send_file(Xfer *pXfer, int rid, Blob *pUuid, int nativeDelta){
  Blob content, uuid;
  int size = 0;
  int isPriv = content_is_private(rid);

  if( isPriv && pXfer->syncPrivate==0 ){
    if( pXfer->remoteDate>=20200413 && pUuid && blob_size(pUuid)>0 ){
      /* If the artifact is private and we are not doing a private sync,
      ** at least tell the other side that the artifact exists and is
      ** known to be private.  But only do this for newer clients since
      ** older ones will throw an error if they get a private igot card
      ** and private syncing is disallowed */
      blob_appendf(pXfer->pOut, "igot %b 1\n", pUuid);
      pXfer->nIGotSent++;
      pXfer->nPrivIGot++;
    }
  if( content_is_private(rid) ) return;
    return;
  }
  if( db_exists("SELECT 1 FROM onremote WHERE rid=%d", rid) ){
     return;
  }
  blob_zero(&uuid);
  db_blob(&uuid, "SELECT uuid FROM blob WHERE rid=%d AND size>=0", rid);
  if( blob_size(&uuid)==0 ){
    return;
  }
  if( blob_size(&uuid)>HNAME_LEN_SHA1 && pXfer->remoteVersion<20000 ){
    xfer_cannot_send_sha3_error(pXfer);
    return;
  }
  if( pUuid ){
    if( blob_compare(pUuid, &uuid)!=0 ){
      blob_reset(&uuid);
      return;
    }
  }else{
    pUuid = &uuid;
  }
  if( uuid_is_shunned(blob_str(pUuid)) ){
    blob_reset(&uuid);
    return;
  }
  if( (pXfer->maxTime != -1 && time(NULL) >= pXfer->maxTime) ||
  if( pXfer->mxSend<=blob_size(pXfer->pOut) ){
    blob_appendf(pXfer->pOut, "igot %b\n", pUuid);
       pXfer->mxSend<=(int)blob_size(pXfer->pOut) ){
    const char *zFormat = isPriv ? "igot %b 1\n" : "igot %b\n";
    blob_appendf(pXfer->pOut, zFormat /*works-like:"%b"*/, pUuid);
    pXfer->nIGotSent++;
    blob_reset(&uuid);
    return;
  }
  if( nativeDelta ){
    size = send_delta_native(pXfer, rid, pUuid);
    size = send_delta_native(pXfer, rid, isPriv, pUuid);
    if( size ){
      pXfer->nDeltaSent++;
    }
  }
  if( size==0 ){
    content_get(rid, &content);

    if( !nativeDelta && blob_size(&content)>100 ){
      size = send_delta_parent(pXfer, rid, &content, pUuid);
      size = send_delta_parent(pXfer, rid, isPriv, &content, pUuid);
    }
    if( size==0 ){
      int size = blob_size(&content);
      if( isPriv ) blob_append(pXfer->pOut, "private\n", -1);
      blob_appendf(pXfer->pOut, "file %b %d\n", pUuid, size);
      blob_append(pXfer->pOut, blob_buffer(&content), size);
      pXfer->nFileSent++;
    }else{
      pXfer->nDeltaSent++;
    }
    blob_reset(&content);
  }
  remote_has(rid);
  blob_reset(&uuid);
#if 0
  if( blob_buffer(pXfer->pOut)[blob_size(pXfer->pOut)-1]!='\n' ){
    blob_append(pXfer->pOut, "\n", 1);
  }
#endif
}

/*
** Send the file identified by rid as a compressed artifact.  Basically,
** send the content exactly as it appears in the BLOB table using
** a "cfile" card.
*/
static void send_compressed_file(Xfer *pXfer, int rid){
  const char *zContent;
  const char *zUuid;
  const char *zDelta;
  int szU;
  int szC;
  int rc;
  int isPrivate;
  int srcIsPrivate;
  static Stmt q1;
  Blob fullContent;

  isPrivate = content_is_private(rid);
  if( isPrivate && pXfer->syncPrivate==0 ) return;
  db_static_prepare(&q1,
    "SELECT uuid, size, content, delta.srcid IN private,"
         "  (SELECT uuid FROM blob WHERE rid=delta.srcid)"
    " FROM blob LEFT JOIN delta ON (blob.rid=delta.rid)"
    " WHERE blob.rid=:rid"
    "   AND blob.size>=0"
    "   AND NOT EXISTS(SELECT 1 FROM shun WHERE shun.uuid=blob.uuid)"
  );
  db_bind_int(&q1, ":rid", rid);
  rc = db_step(&q1);
  if( rc==SQLITE_ROW ){
    zUuid = db_column_text(&q1, 0);
    szU = db_column_int(&q1, 1);
    szC = db_column_bytes(&q1, 2);
    zContent = db_column_raw(&q1, 2);
    srcIsPrivate = db_column_int(&q1, 3);
    zDelta = db_column_text(&q1, 4);
    if( isPrivate ) blob_append(pXfer->pOut, "private\n", -1);
    if( pXfer->remoteVersion<20000 && db_column_bytes(&q1,0)!=HNAME_LEN_SHA1 ){
      xfer_cannot_send_sha3_error(pXfer);
      db_reset(&q1);
      return;
    }
    blob_appendf(pXfer->pOut, "cfile %s ", zUuid);
    if( !isPrivate && srcIsPrivate ){
      content_get(rid, &fullContent);
      szU = blob_size(&fullContent);
      blob_compress(&fullContent, &fullContent);
      szC = blob_size(&fullContent);
      zContent = blob_buffer(&fullContent);
      zDelta = 0;
    }
    if( zDelta ){
      blob_appendf(pXfer->pOut, "%s ", zDelta);
      pXfer->nDeltaSent++;
    }else{
      pXfer->nFileSent++;
    }
    blob_appendf(pXfer->pOut, "%d %d\n", szU, szC);
    blob_append(pXfer->pOut, zContent, szC);
    if( blob_buffer(pXfer->pOut)[blob_size(pXfer->pOut)-1]!='\n' ){
      blob_append(pXfer->pOut, "\n", 1);
    }
    if( !isPrivate && srcIsPrivate ){
      blob_reset(&fullContent);
    }
  }
  db_reset(&q1);
}

/*
** Send the unversioned file identified by zName by generating the
** appropriate "uvfile" card.
**
**     uvfile NAME MTIME HASH SIZE FLAGS \n CONTENT
**
** If the noContent flag is set, omit the CONTENT and set the 0x0004
** flag in FLAGS.
*/
static void send_unversioned_file(
  Xfer *pXfer,            /* Transfer context */
  const char *zName,      /* Name of unversioned file to be sent */
  int noContent           /* True to omit the content */
){
  Stmt q1;

  if( (int)blob_size(pXfer->pOut)>=pXfer->mxSend ) noContent = 1;
  if( noContent ){
    db_prepare(&q1,
      "SELECT mtime, hash, encoding, sz FROM unversioned WHERE name=%Q",
      zName
    );
  }else{
    db_prepare(&q1,
      "SELECT mtime, hash, encoding, sz, content FROM unversioned"
      " WHERE name=%Q",
      zName
    );
  }
  if( db_step(&q1)==SQLITE_ROW ){
    sqlite3_int64 mtime = db_column_int64(&q1, 0);
    const char *zHash = db_column_text(&q1, 1);
    if( pXfer->remoteVersion<20000 && db_column_bytes(&q1,1)>HNAME_LEN_SHA1 ){
      xfer_cannot_send_sha3_error(pXfer);
      db_reset(&q1);
      return;
    }
    if( (int)blob_size(pXfer->pOut)>=pXfer->mxSend ){
      /* If we have already reached the send size limit, send a (short)
      ** uvigot card rather than a uvfile card.  This only happens on the
      ** server side.  The uvigot card will provoke the client to resend
      ** another uvgimme on the next cycle. */
      blob_appendf(pXfer->pOut, "uvigot %s %lld %s %d\n",
                   zName, mtime, zHash, db_column_int(&q1,3));
    }else{
      blob_appendf(pXfer->pOut, "uvfile %s %lld", zName, mtime);
      if( zHash==0 ){
        blob_append(pXfer->pOut, " - 0 1\n", -1);
      }else if( noContent ){
        blob_appendf(pXfer->pOut, " %s %d 4\n", zHash, db_column_int(&q1,3));
      }else{
        Blob content;
        blob_init(&content, 0, 0);
        db_column_blob(&q1, 4, &content);
        if( db_column_int(&q1, 2) ){
          blob_uncompress(&content, &content);
        }
        blob_appendf(pXfer->pOut, " %s %d 0\n", zHash, blob_size(&content));
        blob_append(pXfer->pOut, blob_buffer(&content), blob_size(&content));
        blob_reset(&content);
      }
    }
  }
  db_finalize(&q1);
}

/*
** Send a gimme message for every phantom.
**
** It should not be possible to have a private phantom.  But just to be
** sure, take care not to send any "gimme" messagse on private artifacts.
** Except: do not request shunned artifacts.  And do not request
** private artifacts if we are not doing a private transfer.
*/
static void request_phantoms(Xfer *pXfer, int maxReq){
  Stmt q;
  db_prepare(&q, 
    "SELECT uuid FROM phantom JOIN blob USING(rid)"
    " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
    "   AND NOT EXISTS(SELECT 1 FROM private WHERE rid=blob.rid)"
  db_prepare(&q,
    "SELECT uuid FROM phantom CROSS JOIN blob USING(rid) /*scan*/"
    " WHERE NOT EXISTS(SELECT 1 FROM unk WHERE unk.uuid=blob.uuid)"
    "   AND NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid) %s",
    (pXfer->syncPrivate ? "" :
         "   AND NOT EXISTS(SELECT 1 FROM private WHERE rid=blob.rid)")
  );
  while( db_step(&q)==SQLITE_ROW && maxReq-- > 0 ){
    const char *zUuid = db_column_text(&q, 0);
    blob_appendf(pXfer->pOut, "gimme %s\n", zUuid);
    pXfer->nGimmeSent++;
  }
  db_finalize(&q);
}

/*
** Compute an SHA1 hash on the tail of pMsg.  Verify that it matches the
** Compute an hash on the tail of pMsg.  Verify that it matches the
** the hash given in pHash.  Return non-zero for an error and 0 on success.
**
** The type of hash computed (SHA1, SHA3-256) is determined by
** the length of the input hash in pHash.
*/
static int check_tail_hash(Blob *pHash, Blob *pMsg){
  Blob tail;
  Blob h2;
  int rc;
  blob_tail(pMsg, &tail);
  sha1sum_blob(&tail, &h2);
  rc = hname_verify_hash(&tail, blob_buffer(pHash), blob_size(pHash));
  rc = blob_compare(pHash, &h2);
  blob_reset(&h2);
  blob_reset(&tail);
  return rc;
  return rc==HNAME_ERROR;
}

/*
** Check the signature on an application/x-fossil payload received by
** the HTTP server.  The signature is a line of the following form:
**
**        login LOGIN NONCE SIGNATURE
**
** The NONCE is the SHA1 hash of the remainder of the input.  
** SIGNATURE is the SHA1 checksum of the NONCE concatenated 
** with the users password.
** The NONCE is the SHA1 hash of the remainder of the input.
** SIGNATURE is the SHA1 checksum of the NONCE concatenated
** with the sha1_shared_secret() encoding of the users password.
**
**   SIGNATURE = sha1_sum( NONCE + sha1_shared_secret(PASSWORD) );
**
** The parameters to this routine are ephermeral blobs holding the
** The parameters to this routine are ephemeral blobs holding the
** LOGIN, NONCE and SIGNATURE.
**
** This routine attempts to locate the user and verify the signature.
** If everything checks out, the USER.CAP column for the USER table
** is consulted to set privileges in the global g variable.
**
** If anything fails to check out, no changes are made to privileges.
**
** Signature generation on the client side is handled by the 
** Signature generation on the client side is handled by the
** http_exchange() routine.
**
** Return non-zero for a login failure and zero for success.
*/
int check_login(Blob *pLogin, Blob *pNonce, Blob *pSig){
static int check_login(Blob *pLogin, Blob *pNonce, Blob *pSig){
  Stmt q;
  int rc = -1;
  char *zLogin = blob_terminate(pLogin);
  defossilize(zLogin);

  if( fossil_strcmp(zLogin, "nobody")==0
  if( strcmp(zLogin, "nobody")==0 || strcmp(zLogin,"anonymous")==0 ){
   || fossil_strcmp(zLogin,"anonymous")==0
  ){
    return 0;   /* Anybody is allowed to sync as "nobody" or "anonymous" */
  }
  if( fossil_strcmp(P("REMOTE_USER"), zLogin)==0
      && db_get_boolean("remote_user_ok",0) ){
    return 0;   /* Accept Basic Authorization */
  }
  db_prepare(&q,
     "SELECT pw, cap, uid FROM user"
     " WHERE login=%Q"
     "   AND login NOT IN ('anonymous','nobody','developer','reader')"
     "   AND length(pw)>0",
     zLogin
  );
  if( db_step(&q)==SQLITE_ROW ){
    int szPw;
    Blob pw, combined, hash;
    blob_zero(&pw);
    db_ephemeral_blob(&q, 0, &pw);
    szPw = blob_size(&pw);
    blob_zero(&combined);
    blob_copy(&combined, pNonce);
    blob_append(&combined, blob_buffer(&pw), szPw);
    sha1sum_blob(&combined, &hash);
    assert( blob_size(&hash)==40 );
    rc = blob_compare(&hash, pSig);
    rc = blob_constant_time_cmp(&hash, pSig);
    blob_reset(&hash);
    blob_reset(&combined);
    if( rc!=0 && szPw!=40 ){
      /* If this server stores cleartext passwords and the password did not
      ** match, then perhaps the client is sending SHA1 passwords.  Try
      ** again with the SHA1 password.
      */
      const char *zPw = db_column_text(&q, 0);
      char *zSecret = sha1_shared_secret(zPw, blob_str(pLogin));
      char *zSecret = sha1_shared_secret(zPw, blob_str(pLogin), 0);
      blob_zero(&combined);
      blob_copy(&combined, pNonce);
      blob_append(&combined, zSecret, -1);
      free(zSecret);
      sha1sum_blob(&combined, &hash);
      rc = blob_compare(&hash, pSig);
      rc = blob_constant_time_cmp(&hash, pSig);
      blob_reset(&hash);
      blob_reset(&combined);
    }
    if( rc==0 ){
      const char *zCap;
      zCap = db_column_text(&q, 1);
      login_set_capabilities(zCap);
      login_set_capabilities(zCap, 0);
      g.userUid = db_column_int(&q, 2);
      g.zLogin = mprintf("%b", pLogin);
      g.zNonce = mprintf("%b", pNonce);
      if( g.fHttpTrace ){
        fprintf(stderr, "# login [%s] with capabilities [%s]\n", g.zLogin,zCap);
      }
    }
  }
  db_finalize(&q);

  if( rc==0 ){
    /* If the login was successful. */
    login_set_anon_nobody_capabilities();
  }
  return rc;
}

/*
** Send the content of all files in the unsent table.
**
** This is really just an optimization.  If you clear the
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1827
1828
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1831
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1864
1865


1866
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1870
1871
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1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885




1886
1887
1888
1889
1890
1891
1892
1893

1894
1895

1896
1897

1898



1899
1900
1901
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1904
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1906
1907
1908

1909
1910
1911
1912
1913
1914
1915

1916
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1918
1919
1920

1921
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1923

1924
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1930
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1932
1933
1934
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1941
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1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965

1966
1967
1968
1969
1970
1971
1972


1973
1974




1975
1976
1977
1978
1979
1980
1981
1982
1983

1984

1985
1986
1987
1988
1989

1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019

2020


2021
2022
2023
2024
2025
2026
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2064


2065
2066





2067
2068
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2077
2078
2079
2080
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2100
2101
2102
2103
2104
2105
2106
2107
2108
2109

2110
2111
2112
2113
2114
2115



2116
2117
2118

2119
2120
2121
2122


2123
2124
2125
2126
2127
2128
2129
2130


2131
2132
2133
2134
2135
2136
2137
2138


2139
2140
2141
2142
2143
2144
2145
2146
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2148
2149
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2153
2154
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2156
2157
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2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171


2172
2173
2174
2175
2176
2177
2178


2179
2180

2181

2182
2183
2184
2185
2186

2187
2188
2189
2190
2191
2192


2193
2194
2195
2196

2197
2198
2199
2200
2201
2202
2203
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2205



2206
2207
2208
2209
2210
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2221
2222

2223
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2226
2227
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2237
2238
2239
2240
2241
2242
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2250
2251
2252
2253
2254
2255
2256
2257
2258
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2260
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2284
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2302
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2310




2311
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2321
2322
2323
2324
2325
2326
2327
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2329
2330
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2345
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2362
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2367
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2399
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2409
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2412
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2440
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2443
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2452
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2457
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2470
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2472
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2476
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2481
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2491
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2500
2501
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2563
2564
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2566
2567
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2569
2570
2571
2572
2573
2574
2575
2576
2577
2578

2579
2580
2581
2582

2583


2584
2585



2586
2587
2588
2589

2590
2591
2592

2593
2594
2595

2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610


2611
2612


























2613
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2619
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2622
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2625
2626
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2637
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2641
2642
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2647
2648
2649
2650
2651
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2661

2662
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2666
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2676

2677
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2796
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2800

2801
2802
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2804
2805
2806

2807
2808



2809
2810


2811


2812
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2814
2815
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2818


2819
2820
2821
2822
2823
2824

2825
2826

2827
2828
2829
2830
2831
2832
2833

2834
2835
2836
2837
2838

2839
2840
2841
2842
2843
2844
2845



2846


2847
2848
2849
2850
2851
2852
2853
2854

2855
2856
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2858
2859
2860


2861
2862

2863
2864
2865
2866
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2869
2870
2871
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2873
2874
2875
2876
2877
2878
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2884
2885

2886
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2893







2894
2895
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2897
2898
2899


2900
2901
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2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
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2918
2919
2920








2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
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2946
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2950
2951
2952
2953
2954
2955
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2957
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2960
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2962







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-
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/*
** Check to see if the number of unclustered entries is greater than
** 100 and if it is, form a new cluster.  Unclustered phantoms do not
** count toward the 100 total.  And phantoms are never added to a new
** cluster.
*/
static void create_cluster(void){
void create_cluster(void){
  Blob cluster, cksum;
  Blob deleteWhere;
  Stmt q;
  int nUncl;
  int nRow = 0;
  int rid;

#if 0
  /* We should not ever get any private artifacts in the unclustered table.
  ** But if we do (because of a bug) now is a good time to delete them. */
  db_multi_exec(
    "DELETE FROM unclustered WHERE rid IN (SELECT rid FROM private)"
  );
#endif

  nUncl = db_int(0, "SELECT count(*) FROM unclustered"
  nUncl = db_int(0, "SELECT count(*) FROM unclustered /*scan*/"
                    " WHERE NOT EXISTS(SELECT 1 FROM phantom"
                                      " WHERE rid=unclustered.rid)");
  if( nUncl<100 ){
  if( nUncl>=100 ){
    return;
  }
  blob_zero(&cluster);
  db_prepare(&q, "SELECT uuid FROM unclustered, blob"
                 " WHERE NOT EXISTS(SELECT 1 FROM phantom"
                 "                   WHERE rid=unclustered.rid)"
                 "   AND unclustered.rid=blob.rid"
                 "   AND NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
                 " ORDER BY 1");
  while( db_step(&q)==SQLITE_ROW ){
    blob_appendf(&cluster, "M %s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);
  md5sum_blob(&cluster, &cksum);
  blob_appendf(&cluster, "Z %b\n", &cksum);
  blob_reset(&cksum);
    blob_zero(&cluster);
    blob_zero(&deleteWhere);
    db_prepare(&q, "SELECT uuid FROM unclustered, blob"
                   " WHERE NOT EXISTS(SELECT 1 FROM phantom"
                   "                   WHERE rid=unclustered.rid)"
                   "   AND unclustered.rid=blob.rid"
                   "   AND NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
                   " ORDER BY 1");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(&cluster, "M %s\n", db_column_text(&q, 0));
      nRow++;
      if( nRow>=800 && nUncl>nRow+100 ){
        md5sum_blob(&cluster, &cksum);
        blob_appendf(&cluster, "Z %b\n", &cksum);
        blob_reset(&cksum);
        rid = content_put(&cluster);
        manifest_crosslink(rid, &cluster, MC_NONE);
        blob_reset(&cluster);
        nUncl -= nRow;
        nRow = 0;
        blob_append_sql(&deleteWhere, ",%d", rid);
      }
    }
    db_finalize(&q);
    db_multi_exec(
      "DELETE FROM unclustered WHERE rid NOT IN (0 %s)"
      "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=unclustered.rid)",
      blob_sql_text(&deleteWhere)
    );
    blob_reset(&deleteWhere);
    if( nRow>0 ){
      md5sum_blob(&cluster, &cksum);
      blob_appendf(&cluster, "Z %b\n", &cksum);
      blob_reset(&cksum);
  db_multi_exec("DELETE FROM unclustered");
  content_put(&cluster, 0, 0);
  blob_reset(&cluster);
      rid = content_put(&cluster);
      manifest_crosslink(rid, &cluster, MC_NONE);
      blob_reset(&cluster);
    }
  }
}

/*
** Send igot messages for every private artifact
*/
static int send_private(Xfer *pXfer){
  int cnt = 0;
  Stmt q;
  if( pXfer->syncPrivate ){
    db_prepare(&q, "SELECT uuid FROM private JOIN blob USING(rid)");
    while( db_step(&q)==SQLITE_ROW ){
      blob_appendf(pXfer->pOut, "igot %s 1\n", db_column_text(&q,0));
      cnt++;
    }
    db_finalize(&q);
  }
  return cnt;
}

/*
** Send an igot message for every entry in unclustered table.
** Return the number of cards sent.
**
** Except:
**    *  Do not send igot cards for shunned artifacts
**    *  Do not send igot cards for phantoms
**    *  Do not send igot cards for private artifacts
**    *  Do not send igot cards for any artifact that is in the
**       ONREMOTE table, if that table exists.
**
** If the pXfer->resync flag is set, that means we are doing a "--verily"
** sync and all artifacts that don't meet the restrictions above should
** be sent.
*/
static int send_unclustered(Xfer *pXfer){
  Stmt q;
  int cnt = 0;
  const char *zExtra;
  if( db_table_exists("temp","onremote") ){
    zExtra = " AND NOT EXISTS(SELECT 1 FROM onremote WHERE rid=blob.rid)";
  }else{
    zExtra = "";
  }
  if( pXfer->resync ){
  db_prepare(&q, 
    "SELECT uuid FROM unclustered JOIN blob USING(rid)"
    " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
    "   AND NOT EXISTS(SELECT 1 FROM private WHERE rid=blob.rid)"
    "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=blob.rid)"
  );
    db_prepare(&q,
      "SELECT uuid, rid FROM blob"
      " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
      "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=blob.rid)"
      "   AND NOT EXISTS(SELECT 1 FROM private WHERE rid=blob.rid)%s"
      "   AND blob.rid<=%d"
      " ORDER BY blob.rid DESC",
      zExtra /*safe-for-%s*/, pXfer->resync
    );
  }else{
    db_prepare(&q,
      "SELECT uuid FROM unclustered JOIN blob USING(rid) /*scan*/"
      " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
      "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=blob.rid)"
      "   AND NOT EXISTS(SELECT 1 FROM private WHERE rid=blob.rid)%s",
      zExtra /*safe-for-%s*/
    );
  }
  while( db_step(&q)==SQLITE_ROW ){
    blob_appendf(pXfer->pOut, "igot %s\n", db_column_text(&q, 0));
    cnt++;
    if( pXfer->resync && pXfer->mxSend<(int)blob_size(pXfer->pOut) ){
      pXfer->resync = db_column_int(&q, 1)-1;
  }
    }
  }
  db_finalize(&q);
  if( cnt==0 ) pXfer->resync = 0;
  return cnt;
}

/*
** Send an igot message for every artifact.
*/
static void send_all(Xfer *pXfer){
  Stmt q;
  db_prepare(&q, 
  db_prepare(&q,
    "SELECT uuid FROM blob "
    " WHERE NOT EXISTS(SELECT 1 FROM shun WHERE uuid=blob.uuid)"
    "   AND NOT EXISTS(SELECT 1 FROM private WHERE rid=blob.rid)"
    "   AND NOT EXISTS(SELECT 1 FROM phantom WHERE rid=blob.rid)"
  );
  while( db_step(&q)==SQLITE_ROW ){
    blob_appendf(pXfer->pOut, "igot %s\n", db_column_text(&q, 0));
  }
  db_finalize(&q);
}

/*
** pXfer is a "pragma uv-hash HASH" card.
**
** If HASH is different from the unversioned content hash on this server,
** then send a bunch of uvigot cards, one for each entry unversioned file
** on this server.
*/
static void send_unversioned_catalog(Xfer *pXfer){
  Stmt uvq;
  unversioned_schema();
  db_prepare(&uvq,
     "SELECT name, mtime, hash, sz FROM unversioned"
  );
  while( db_step(&uvq)==SQLITE_ROW ){
    const char *zName = db_column_text(&uvq,0);
    sqlite3_int64 mtime = db_column_int64(&uvq,1);
    const char *zHash = db_column_text(&uvq,2);
    int sz = db_column_int(&uvq,3);
    if( zHash==0 ){ sz = 0; zHash = "-"; }
    blob_appendf(pXfer->pOut, "uvigot %s %lld %s %d\n",
                 zName, mtime, zHash, sz);
  }
  db_finalize(&uvq);
}
** Send a single config card for configuration item zName

/*
** Called when there is an attempt to transfer private content to and
** from a server without authorization.
*/
static void server_private_xfer_not_authorized(void){
  @ error not\sauthorized\sto\ssync\sprivate\scontent
}

/*
** Return the common TH1 code to evaluate prior to evaluating any other
** TH1 transfer notification scripts.
*/
static void send_config_card(Xfer *pXfer, const char *zName){
const char *xfer_common_code(void){
  if( zName[0]!='@' ){
    Blob val;
    blob_zero(&val);
    db_blob(&val, "SELECT value FROM config WHERE name=%Q", zName);
    if( blob_size(&val)>0 ){
  return db_get("xfer-common-script", 0);
}

      blob_appendf(pXfer->pOut, "config %s %d\n", zName, blob_size(&val));
      blob_append(pXfer->pOut, blob_buffer(&val), blob_size(&val));
      blob_reset(&val);
      blob_append(pXfer->pOut, "\n", 1);
    }
  }else{
    Blob content;
    blob_zero(&content);
/*
** Return the TH1 code to evaluate when a push is processed.
*/
const char *xfer_push_code(void){
  return db_get("xfer-push-script", 0);
}

/*
** Return the TH1 code to evaluate when a commit is processed.
*/
const char *xfer_commit_code(void){
  return db_get("xfer-commit-script", 0);
}

    configure_render_special_name(zName, &content);
    blob_appendf(pXfer->pOut, "config %s %d\n%s\n", zName,
                 blob_size(&content), blob_str(&content));
    blob_reset(&content);
  }
}

/*
** Return the TH1 code to evaluate when a ticket change is processed.
*/
const char *xfer_ticket_code(void){
  return db_get("xfer-ticket-script", 0);
}

/*
** Reset the CGI content, roll back any pending db transaction, and
** emit an "error" xfer message. The message text gets fossil-encoded
** by this function. This is only intended for use with
** fail-fast/fatal errors, not ones which can be skipped over.
*/
static void xfer_fatal_error(const char *zMsg){
  cgi_reset_content();
  if( db_transaction_nesting_depth()>0 ){
    db_rollback_transaction();
  }
  @ error %F(zMsg)
}

/*
** Run the specified TH1 script, if any, and returns 1 on error.
*/
int xfer_run_script(
  const char *zScript,
  const char *zUuidOrList,
  int bIsList
){
  int rc = TH_OK;
  if( !zScript ) return rc;
  Th_FossilInit(TH_INIT_DEFAULT);
  Th_Store(bIsList ? "uuids" : "uuid", zUuidOrList ? zUuidOrList : "");
  rc = Th_Eval(g.interp, 0, zScript, -1);
  if( rc!=TH_OK ){
    fossil_error(1, "%s", Th_GetResult(g.interp, 0));
  }
  return rc;
}

/*
** Runs the pre-transfer TH1 script, if any, and returns its return code.
** This script may be run multiple times.  If the script performs actions
** that cannot be redone, it should use an internal [if] guard similar to
** the following:
**
** if {![info exists common_done]} {
**   # ... code here
**   set common_done 1
** }
*/
int xfer_run_common_script(void){
  return xfer_run_script(xfer_common_code(), 0, 0);
}

/*
** This routine makes a "syncwith:URL" entry in the CONFIG table to
** indicate that a sync is occuring with zUrl.
**
** Add a "syncfrom:URL" entry instead of "syncwith:URL" if bSyncFrom is true.
*/
static void xfer_syncwith(const char *zUrl, int bSyncFrom){
  UrlData x;
  memset(&x, 0, sizeof(x));
  url_parse_local(zUrl, URL_OMIT_USER, &x);
  if( x.protocol && strncmp(x.protocol,"http",4)==0
   && x.name && sqlite3_strlike("%localhost%", x.name, 0)!=0
  ){
    db_unprotect(PROTECT_CONFIG);
    db_multi_exec("REPLACE INTO config(name,value,mtime)"
                  "VALUES('sync%q:%q','{}',now())",
       bSyncFrom ? "from" : "with", x.canonical);
    db_protect_pop();
  }
  url_unparse(&x);
}

/*
** If this variable is set, disable login checks.  Used for debugging
** only.
*/
static int disableLogin = 0;

/*
** The CGI/HTTP preprocessor always redirects requests with a content-type
** of application/x-fossil or application/x-fossil-debug to this page,
** regardless of what path was specified in the HTTP header.  This allows
** clone clients to specify a URL that omits default pathnames, such
** as "http://fossil-scm.morg/" instead of "http://fossil-scm.org/index.cgi".
** as "http://fossil-scm.org/" instead of "http://fossil-scm.org/index.cgi".
**
** WEBPAGE: xfer
** WEBPAGE: xfer  raw-content  loadavg-exempt
**
** This is the transfer handler on the server side.  The transfer
** message has been uncompressed and placed in the g.cgiIn blob.
** Process this message and form an appropriate reply.
*/
void page_xfer(void){
  int isPull = 0;
  int isPush = 0;
  int nErr = 0;
  Xfer xfer;
  int deltaFlag = 0;
  int isClone = 0;
  int nGimme = 0;
  int size;
  char *zNow;
  int recvConfig = 0;
  int rc;
  const char *zScript = 0;
  char *zUuidList = 0;
  int nUuidList = 0;
  char **pzUuidList = 0;
  int *pnUuidList = 0;
  int uvCatalogSent = 0;
  int bSendLinks = 0;

  if( strcmp(PD("REQUEST_METHOD","POST"),"POST") ){
  if( fossil_strcmp(PD("REQUEST_METHOD","POST"),"POST") ){
     fossil_redirect_home();
  }
  g.zLogin = "anonymous";
  login_set_anon_nobody_capabilities();
  login_check_credentials();
  cgi_check_for_malice();
  memset(&xfer, 0, sizeof(xfer));
  blobarray_zero(xfer.aToken, count(xfer.aToken));
  cgi_set_content_type(g.zContentType);
  cgi_reset_content();
  if( db_schema_is_outofdate() ){
    @ error database\sschema\sis\sout-of-date\son\sthe\sserver.
    return;
  }
  blob_zero(&xfer.err);
  xfer.pIn = &g.cgiIn;
  xfer.pOut = cgi_output_blob();
  xfer.mxSend = db_get_int("max-download", 5000000);
  xfer.maxTime = db_get_int("max-download-time", 30);
  if( xfer.maxTime<1 ) xfer.maxTime = 1;
  xfer.maxTime += time(NULL);
  g.xferPanic = 1;

  db_begin_transaction();
  db_begin_write();
  db_multi_exec(
     "CREATE TEMP TABLE onremote(rid INTEGER PRIMARY KEY);"
     "CREATE TEMP TABLE unk(uuid TEXT PRIMARY KEY) WITHOUT ROWID;"
  );
  manifest_crosslink_begin();
  rc = xfer_run_common_script();
  if( rc==TH_ERROR ){
    cgi_reset_content();
    @ error common\sscript\sfailed:\s%F(g.zErrMsg)
    nErr++;
  }
  zScript = xfer_push_code();
  if( zScript ){ /* NOTE: Are TH1 transfer hooks enabled? */
    pzUuidList = &zUuidList;
    pnUuidList = &nUuidList;
  }
  while( blob_line(xfer.pIn, &xfer.line) ){
    if( blob_buffer(&xfer.line)[0]=='#' ) continue;
    if( blob_size(&xfer.line)==0 ) continue;
    xfer.nToken = blob_tokenize(&xfer.line, xfer.aToken, count(xfer.aToken));

    /*   file UUID SIZE \n CONTENT
    **   file UUID DELTASRC SIZE \n CONTENT
    /*   file HASH SIZE \n CONTENT
    **   file HASH DELTASRC SIZE \n CONTENT
    **
    ** Accept a file from the client.
    ** Server accepts a file from the client.
    */
    if( blob_eq(&xfer.aToken[0], "file") ){
      if( !isPush ){
        cgi_reset_content();
        @ error not\sauthorized\sto\swrite
        nErr++;
        break;
      }
      xfer_accept_file(&xfer);
      xfer_accept_file(&xfer, 0, pzUuidList, pnUuidList);
      if( blob_size(&xfer.err) ){
        cgi_reset_content();
        @ error %T(blob_str(&xfer.err))
        nErr++;
        break;
      }
    }else

    /*   cfile HASH USIZE CSIZE \n CONTENT
    **   cfile HASH DELTASRC USIZE CSIZE \n CONTENT
    **
    ** Server accepts a compressed file from the client.
    */
    if( blob_eq(&xfer.aToken[0], "cfile") ){
      if( !isPush ){
        cgi_reset_content();
        @ error not\sauthorized\sto\swrite
        nErr++;
        break;
      }
      xfer_accept_compressed_file(&xfer, pzUuidList, pnUuidList);
      if( blob_size(&xfer.err) ){
        cgi_reset_content();
        @ error %T(blob_str(&xfer.err))
        nErr++;
        break;
      }
    }else

    /*   uvfile NAME MTIME HASH SIZE FLAGS \n CONTENT
    **
    ** Server accepts an unversioned file from the client.
    */
    if( blob_eq(&xfer.aToken[0], "uvfile") ){
      xfer_accept_unversioned_file(&xfer, g.perm.WrUnver);
      if( blob_size(&xfer.err) ){
        cgi_reset_content();
        @ error %T(blob_str(&xfer.err))
        fossil_print("%%%%%%%% xfer.err: '%s'\n", blob_str(&xfer.err));
        nErr++;
        break;
      }
    }else

    /*   gimme UUID
    /*   gimme HASH
    **
    ** Client is requesting a file.  Send it.
    ** Client is requesting a file from the server.  Send it.
    */
    if( blob_eq(&xfer.aToken[0], "gimme")
     && xfer.nToken==2
     && blob_is_uuid(&xfer.aToken[1])
     && blob_is_hname(&xfer.aToken[1])
    ){
      nGimme++;
      remote_unk(&xfer.aToken[1]);
      if( isPull ){
        int rid = rid_from_uuid(&xfer.aToken[1], 0);
        int rid = rid_from_uuid(&xfer.aToken[1], 0, 0);
        if( rid ){
          send_file(&xfer, rid, &xfer.aToken[1], deltaFlag);
        }
      }
    }else

    /*   uvgimme NAME
    **
    ** Client is requesting an unversioned file from the server.  Send it.
    */
    if( blob_eq(&xfer.aToken[0], "uvgimme")
     && xfer.nToken==2
     && blob_is_filename(&xfer.aToken[1])
    ){
      send_unversioned_file(&xfer, blob_str(&xfer.aToken[1]), 0);
    }else

    /*   igot UUID
    /*   igot HASH ?ISPRIVATE?
    **
    ** Client announces that it has a particular file.
    ** Client announces that it has a particular file.  If the ISPRIVATE
    ** argument exists and is "1", then the file is a private file.
    */
    if( xfer.nToken==2
    if( xfer.nToken>=2
     && blob_eq(&xfer.aToken[0], "igot")
     && blob_is_uuid(&xfer.aToken[1])
     && blob_is_hname(&xfer.aToken[1])
    ){
      if( isPush ){
        int rid = 0;
        int isPriv = 0;
        if( xfer.nToken==2 || blob_eq(&xfer.aToken[2],"1")==0 ){
          /* Client says the artifact is public */
        rid_from_uuid(&xfer.aToken[1], 1);
      }
          rid = rid_from_uuid(&xfer.aToken[1], 1, 0);
        }else if( g.perm.Private ){
          /* Client says the artifact is private and the client has
          ** permission to push private content.  Create a new phantom
          ** artifact that is marked private. */
          rid = rid_from_uuid(&xfer.aToken[1], 1, 1);
          isPriv = 1;
        }else{
          /* Client says the artifact is private and the client is unable
          ** or unwilling to send us the artifact.  If we already hold the
          ** artifact here on the server as a phantom, make sure that
          ** phantom is marked as private so that we don't keep asking about
          ** it in subsequent sync requests. */
          rid = rid_from_uuid(&xfer.aToken[1], 0, 1);
          isPriv = 1;
        }
        if( rid ){
          remote_has(rid);
          if( isPriv ){
            content_make_private(rid);
          }else{
            content_make_public(rid);
          }
        }
      }
    }else
  
    


    /*    pull  SERVERCODE  PROJECTCODE
    **    push  SERVERCODE  PROJECTCODE
    **
    ** The client wants either send or receive.  The server should
    ** verify that the project code matches.
    ** verify that the project code matches.  The server code is ignored.
    */
    if( xfer.nToken==3
     && (blob_eq(&xfer.aToken[0], "pull") || blob_eq(&xfer.aToken[0], "push"))
     && blob_is_uuid(&xfer.aToken[1])
     && blob_is_uuid(&xfer.aToken[2])
     && blob_is_hname(&xfer.aToken[2])
    ){
      const char *zPCode;
      zPCode = db_get("project-code", 0);
      if( zPCode==0 ){
        fossil_panic("missing project code");
        fossil_fatal("missing project code");
      }
      if( !blob_eq_str(&xfer.aToken[2], zPCode, -1) ){
        cgi_reset_content();
        @ error wrong\sproject
        nErr++;
        break;
      }
      login_check_credentials();
      if( blob_eq(&xfer.aToken[0], "pull") ){
        if( !g.okRead ){
        if( !g.perm.Read ){
          cgi_reset_content();
          @ error not\sauthorized\sto\sread
          nErr++;
          break;
        }
        isPull = 1;
      }else{
        if( !g.okWrite ){
        if( !g.perm.Write ){
          if( !isPull ){
            cgi_reset_content();
            @ error not\sauthorized\sto\swrite
            nErr++;
          }else{
            @ message pull\sonly\s-\snot\sauthorized\sto\spush
          }
        }else{
          isPush = 1;
        }
      }
    }else

    /*    clone
    /*    clone   ?PROTOCOL-VERSION?  ?SEQUENCE-NUMBER?
    **
    ** The client knows nothing.  Tell all.
    */
    if( blob_eq(&xfer.aToken[0], "clone") ){
      int iVers;
      login_check_credentials();
      if( !g.okClone ){
      if( !g.perm.Clone ){
        cgi_reset_content();
        @ push %s(db_get("server-code", "x")) %s(db_get("project-code", "x"))
        @ error not\sauthorized\sto\sclone
        nErr++;
        break;
      }
      if( db_get_boolean("uv-sync",0) && !uvCatalogSent ){
        @ pragma uv-pull-only
        send_unversioned_catalog(&xfer);
        uvCatalogSent = 1;
      }
      if( xfer.nToken==3
       && blob_is_int(&xfer.aToken[1], &iVers)
       && iVers>=2
      ){
        int seqno, max;
        if( iVers>=3 ){
          cgi_set_content_type("application/x-fossil-uncompressed");
        }
        blob_is_int(&xfer.aToken[2], &seqno);
        if( seqno<=0 ){
          xfer_fatal_error("invalid clone sequence number");
          return;
        }
        max = db_int(0, "SELECT max(rid) FROM blob");
        while( xfer.mxSend>(int)blob_size(xfer.pOut) && seqno<=max){
          if( time(NULL) >= xfer.maxTime ) break;
          if( iVers>=3 ){
            send_compressed_file(&xfer, seqno);
          }else{
            send_file(&xfer, seqno, 0, 1);
          }
          seqno++;
        }
        if( seqno>max ) seqno = 0;
        @ clone_seqno %d(seqno)
      }else{
      isClone = 1;
      isPull = 1;
      deltaFlag = 1;
        isClone = 1;
        isPull = 1;
        deltaFlag = 1;
      }
      @ push %s(db_get("server-code", "x")) %s(db_get("project-code", "x"))
    }else

    /*    login  USER  NONCE  SIGNATURE
    **
    ** The client has sent login credentials to the server.
    ** Check for a valid login.  This has to happen before anything else.
    ** Validate the login.  This has to happen before anything else.
    ** The client can send multiple logins.  Permissions are cumulative.
    */
    if( blob_eq(&xfer.aToken[0], "login")
     && xfer.nToken==4
    ){
      if( disableLogin ){
        g.okRead = g.okWrite = 1;
        g.perm.Read = g.perm.Write = g.perm.Private = g.perm.Admin = 1;
      }else{
        if( check_tail_hash(&xfer.aToken[2], xfer.pIn)
         || check_login(&xfer.aToken[1], &xfer.aToken[2], &xfer.aToken[3])
        ){
          cgi_reset_content();
          @ error login\sfailed
          nErr++;
          break;
        }        
        }
      }
    }else
    

    /*    reqconfig  NAME
    **
    ** Request a configuration value
    ** Client is requesting a configuration value from the server
    */
    if( blob_eq(&xfer.aToken[0], "reqconfig")
     && xfer.nToken==2
    ){
      if( g.okRead ){
      if( g.perm.Read ){
        char *zName = blob_str(&xfer.aToken[1]);
        if( zName[0]=='/' ){
        if( configure_is_exportable(zName) ){
          send_config_card(&xfer, zName);
          /* New style configuration transfer */
          int groupMask = configure_name_to_mask(&zName[1], 0);
          if( !g.perm.Admin ) groupMask &= ~(CONFIGSET_USER|CONFIGSET_SCRIBER);
          if( !g.perm.RdAddr ) groupMask &= ~CONFIGSET_ADDR;
          configure_send_group(xfer.pOut, groupMask, 0);
        }
      }
    }else
    

    /*   config NAME SIZE \n CONTENT
    **
    ** Receive a configuration value from the client.  This is only
    ** permitted for high-privilege users.
    ** Client has sent a configuration value to the server.
    ** This is only permitted for high-privilege users.
    */
    if( blob_eq(&xfer.aToken[0],"config") && xfer.nToken==3
        && blob_is_int(&xfer.aToken[2], &size) ){
      const char *zName = blob_str(&xfer.aToken[1]);
      Blob content;
      if( size<0 ){
        xfer_fatal_error("invalid config record");
        return;
      }
      blob_zero(&content);
      blob_extract(xfer.pIn, size, &content);
      if( !g.okAdmin ){
      if( !g.perm.Admin ){
        cgi_reset_content();
        @ error not\sauthorized\sto\spush\sconfiguration
        nErr++;
        break;
      }
      if( zName[0]!='@' ){
        if( strcmp(zName, "logo-image")==0 ){
          Stmt ins;
          db_prepare(&ins,
            "REPLACE INTO config(name, value) VALUES(:name, :value)"
          );
          db_bind_text(&ins, ":name", zName);
          db_bind_blob(&ins, ":value", &content);
          db_step(&ins);
          db_finalize(&ins);
        }else{
          db_multi_exec(
              "REPLACE INTO config(name,value) VALUES(%Q,%Q)",
              zName, blob_str(&content)
          );
        }
      }else{
        /* Notice that we are evaluating arbitrary SQL received from the
        ** client.  But this can only happen if the client has authenticated
        ** as an administrator, so presumably we trust the client at this
        ** point.
        */
        if( !recvConfig ){
          configure_prepare_to_receive(0);
      configure_receive(zName, &content, CONFIGSET_ALL);
          recvConfig = 1;
        }
        db_multi_exec("%s", blob_str(&content));
      }
      blob_reset(&content);
      blob_seek(xfer.pIn, 1, BLOB_SEEK_CUR);
    }else

      

    /*    cookie TEXT
    **
    ** A cookie contains a arbitrary-length argument that is server-defined.
    ** A cookie contains an arbitrary-length argument that is server-defined.
    ** The argument must be encoded so as not to contain any whitespace.
    ** The server can optionally send a cookie to the client.  The client
    ** might then return the same cookie back to the server on its next
    ** communication.  The cookie might record information that helps
    ** the server optimize a push or pull.
    **
    ** The client is not required to return a cookie.  So the server
    ** must not depend on the cookie.  The cookie should be an optimization
    ** only.  The client might also send a cookie that came from a different
    ** server.  So the server must be prepared to distinguish its own cookie
    ** from cookies originating from other servers.  The client might send
    ** back several different cookies to the server.  The server should be
    ** prepared to sift through the cookies and pick the one that it wants.
    */
    if( blob_eq(&xfer.aToken[0], "cookie") && xfer.nToken==2 ){
      /* Process the cookie */
    }else


    /*    private
    **
    ** The client card indicates that the next "file" or "cfile" will contain
    ** private content.
    */
    if( blob_eq(&xfer.aToken[0], "private") ){
      if( !g.perm.Private ){
        server_private_xfer_not_authorized();
      }else{
        xfer.nextIsPrivate = 1;
      }
    }else


    /*    pragma NAME VALUE...
    **
    ** The client issues pragmas to try to influence the behavior of the
    ** server.  These are requests only.  Unknown pragmas are silently
    ** ignored.
    */
    if( blob_eq(&xfer.aToken[0], "pragma") && xfer.nToken>=2 ){

      /*   pragma send-private
      **
      ** The client is requesting private artifacts.
      **
      ** If the user has the "x" privilege (which must be set explicitly -
      ** it is not automatic with "a" or "s") then this pragma causes
      ** private information to be pulled in addition to public records.
      */
      if( blob_eq(&xfer.aToken[1], "send-private") ){
        login_check_credentials();
        if( !g.perm.Private ){
          server_private_xfer_not_authorized();
        }else{
          xfer.syncPrivate = 1;
        }
      }else

      /*   pragma send-catalog
      **
      ** The client wants to see igot cards for all known artifacts.
      ** This is used as part of "sync --verily" to help ensure that
      ** no artifacts have been missed on prior syncs.
      */
      if( blob_eq(&xfer.aToken[1], "send-catalog") ){
        xfer.resync = 0x7fffffff;
      }else

      /*   pragma client-version VERSION ?DATE? ?TIME?
      **
      ** The client announces to the server what version of Fossil it
      ** is running.  The DATE and TIME are a pure numeric ISO8601 time
      ** for the specific check-in of the client.
      */
      if( xfer.nToken>=3 && blob_eq(&xfer.aToken[1], "client-version") ){
        xfer.remoteVersion = atoi(blob_str(&xfer.aToken[2]));
        if( xfer.nToken>=5 ){
          xfer.remoteDate = atoi(blob_str(&xfer.aToken[3]));
          xfer.remoteTime = atoi(blob_str(&xfer.aToken[4]));
          @ pragma server-version %d(RELEASE_VERSION_NUMBER) \
          @ %d(MANIFEST_NUMERIC_DATE) %d(MANIFEST_NUMERIC_TIME)
        }
      }else

      /*   pragma uv-hash HASH
      **
      ** The client wants to make sure that unversioned files are all synced.
      ** If the HASH does not match, send a complete catalog of
      ** "uvigot" cards.
      */
      if( blob_eq(&xfer.aToken[1], "uv-hash")
       && blob_is_hname(&xfer.aToken[2])
      ){
        if( !uvCatalogSent
         && g.perm.Read
         && !blob_eq_str(&xfer.aToken[2], unversioned_content_hash(0),-1)
        ){
          if( g.perm.WrUnver ){
            @ pragma uv-push-ok
          }else if( g.perm.Read ){
            @ pragma uv-pull-only
          }
          send_unversioned_catalog(&xfer);
        }
        uvCatalogSent = 1;
      }else

      /*   pragma ci-lock CHECKIN-HASH CLIENT-ID
      **
      ** The client wants to make non-branch commit against the check-in
      ** identified by CHECKIN-HASH.  The server will remember this and
      ** subsequent ci-lock requests from different clients will generate
      ** a ci-lock-fail pragma in the reply.
      */
      if( blob_eq(&xfer.aToken[1], "ci-lock")
       && xfer.nToken==4
       && blob_is_hname(&xfer.aToken[2])
      ){
        Stmt q;
        sqlite3_int64 iNow = time(0);
        sqlite3_int64 maxAge = db_get_int("lock-timeout",60);
        int seenFault = 0;
        db_prepare(&q,
          "SELECT value->>'login',"
          "       mtime,"
          "       value->>'clientid',"
          "       (SELECT rid FROM blob WHERE uuid=substr(name,9)),"
          "       name"
          " FROM config"
          " WHERE name GLOB 'ci-lock-*'"
          "   AND json_valid(value)"
        );
        while( db_step(&q)==SQLITE_ROW ){
          int x = db_column_int(&q,3);
          const char *zName = db_column_text(&q,4);
          if( db_column_int64(&q,1)<=iNow-maxAge || !is_a_leaf(x) ){
            /* check-in locks expire after maxAge seconds, or when the
            ** check-in is no longer a leaf */
            db_unprotect(PROTECT_CONFIG);
            db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
            db_protect_pop();
            continue;
          }
          if( fossil_strcmp(zName+8, blob_str(&xfer.aToken[2]))==0 ){
            const char *zClientId = db_column_text(&q, 2);
            const char *zLogin = db_column_text(&q,0);
            sqlite3_int64 mtime = db_column_int64(&q, 1);
            if( fossil_strcmp(zClientId, blob_str(&xfer.aToken[3]))!=0 ){
              @ pragma ci-lock-fail %F(zLogin) %lld(mtime)
            }
            seenFault = 1;
          }
        }
        db_finalize(&q);
        if( !seenFault ){
          db_unprotect(PROTECT_CONFIG);
          db_multi_exec(
            "REPLACE INTO config(name,value,mtime)"
            "VALUES('ci-lock-%q',json_object('login',%Q,'clientid',%Q),now())",
            blob_str(&xfer.aToken[2]), g.zLogin,
            blob_str(&xfer.aToken[3])
          );
          db_protect_pop();
        }
        if( db_get_boolean("forbid-delta-manifests",0) ){
          @ pragma avoid-delta-manifests
        }
      }else

      /*   pragma ci-unlock CLIENT-ID
      **
      ** Remove any locks previously held by CLIENT-ID.  Clients send this
      ** pragma with their own ID whenever they know that they no longer
      ** have any commits pending.
      */
      if( blob_eq(&xfer.aToken[1], "ci-unlock")
       && xfer.nToken==3
       && blob_is_hname(&xfer.aToken[2])
      ){
        db_unprotect(PROTECT_CONFIG);
        db_multi_exec(
          "DELETE FROM config"
          " WHERE name GLOB 'ci-lock-*'"
          "   AND (NOT json_valid(value) OR value->>'clientid'==%Q)",
          blob_str(&xfer.aToken[2])
        );
        db_protect_pop();
      }else

      /*   pragma client-url URL
      **
      ** This pragma is an informational notification to the server that
      ** their relationship could, in theory, be inverted by having the
      ** server call the client at URL.
      */
      if( blob_eq(&xfer.aToken[1], "client-url")
       && xfer.nToken==3
       && g.perm.Write
      ){
        xfer_syncwith(blob_str(&xfer.aToken[2]), 1);
      }else

      /*    pragma req-links
      **
      ** The client sends this message to the server to ask the server
      ** to tell it about alternative repositories  in the reply.
      */
      if( blob_eq(&xfer.aToken[1], "req-links") ){
        bSendLinks = 1;
      }

    }else

    /* Unknown message
    */
    {
      cgi_reset_content();
      @ error bad\scommand:\s%F(blob_str(&xfer.line))
    }
    blobarray_reset(xfer.aToken, xfer.nToken);
    blob_reset(&xfer.line);
  }
  if( isPush ){
    if( rc==TH_OK ){
      rc = xfer_run_script(zScript, zUuidList, 1);
      if( rc==TH_ERROR ){
        cgi_reset_content();
        @ error push\sscript\sfailed:\s%F(g.zErrMsg)
        nErr++;
      }
    }
    request_phantoms(&xfer, 500);
  }
  if( zUuidList ){
    Th_Free(g.interp, zUuidList);
  }
  if( isClone && nGimme==0 ){
    /* The initial "clone" message from client to server contains no
    ** "gimme" cards. On that initial message, send the client an "igot"
    ** card for every artifact currently in the respository.  This will
    ** card for every artifact currently in the repository.  This will
    ** cause the client to create phantoms for all artifacts, which will
    ** in turn make sure that the entire repository is sent efficiently
    ** and expeditiously.
    */
    send_all(&xfer);
    if( xfer.syncPrivate ) send_private(&xfer);
  }else if( isPull ){
    create_cluster();
    send_unclustered(&xfer);
    if( xfer.syncPrivate ) send_private(&xfer);
  }
  hook_expecting_more_artifacts(xfer.nGimmeSent?60:0);
  db_multi_exec("DROP TABLE onremote; DROP TABLE unk;");
  manifest_crosslink_end(MC_PERMIT_HOOKS);
  if( recvConfig ){
    configure_finalize_receive();

  /* Send URLs for alternative repositories for the same project,
  ** if requested by the client. */
  if( bSendLinks && g.zBaseURL ){
    Stmt q;
    db_prepare(&q,
      "WITH remote(mtime, url, arg) AS (\n"
      "  SELECT mtime, substr(name,10), '{}' FROM config\n"
      "   WHERE name GLOB 'syncwith:http*'\n"
      "  UNION ALL\n"
      "  SELECT mtime, substr(name,10), '{}' FROM config\n"
      "   WHERE name GLOB 'syncfrom:http*'\n"
      "  UNION ALL\n"
      "  SELECT mtime, substr(name,9), '{\"type\":\"git\"}' FROM config\n"
      "   WHERE name GLOB 'gitpush:*'\n"
      ")\n"
      "SELECT url, json_insert(arg,'$.src',%Q), max(mtime)\n"
      "  FROM remote WHERE mtime>unixepoch('now','-1 month')\n"
      " GROUP BY url;",
      g.zBaseURL
    );
    while( db_step(&q)==SQLITE_ROW ){
      UrlData x;
      const char *zUrl = db_column_text(&q, 0);
      const char *zArg = db_column_text(&q, 1);
      i64 iMtime = db_column_int64(&q, 2);
      memset(&x, 0, sizeof(x));
      url_parse_local(zUrl, URL_OMIT_USER, &x);
      if( x.name!=0 && sqlite3_strlike("%localhost%", x.name, 0)!=0 ){
        @ pragma link %F(x.canonical) %F(zArg) %lld(iMtime)
      }
      url_unparse(&x);
    }
    db_finalize(&q);
  }
  manifest_crosslink_end();
  db_end_transaction(0);

  /* Send the server timestamp last, in case prior processing happened
  ** to use up a significant fraction of our time window.
  */
  zNow = db_text(0, "SELECT strftime('%%Y-%%m-%%dT%%H:%%M:%%S', 'now')");
  @ # timestamp %s(zNow) errors %d(nErr)
  fossil_free(zNow);

  db_commit_transaction();
  configure_rebuild();
}

/*
** COMMAND: test-xfer
**
** Usage: %fossil test-xfer ?OPTIONS? XFERFILE
**
** Pass the sync-protocol input file XFERFILE into the server-side sync
** protocol handler.  Generate a reply on standard output.
**
** This command is used for debugging the server.  There is a single
** argument which is the uncompressed content of an "xfer" message
** from client to server.  This command interprets that message as
** if had been received by the server.
** This command was original created to help debug the server side of
** sync messages.  The XFERFILE is the uncompressed content of an
** "xfer" HTTP request from client to server.  This command interprets
** that message and generates the content of an HTTP reply (without any
** encoding and without the HTTP reply headers) and writes that reply
** on standard output.
**
** One possible usages scenario is to capture some XFERFILE examples
** On the client side, run:
** using a command like:
**
**      fossil push http://bogus/ --httptrace
**     fossil push http://bogus/ --httptrace
**
** Or a similar command to provide the output.  The content of the
** The complete HTTP requests are stored in files named "http-request-N.txt".
** message will appear on standard output.  Capture this message
** into a file named (for example) out.txt.  Then run the
** server in gdb:
** Find one of those requests, remove the HTTP header, and make other edits
** as necessary to generate an appropriate XFERFILE test case.  Then run:
**
**     fossil test-xfer xferfile.txt
**
**     gdb fossil
**     r test-xfer out.txt
** Options:
**    --host  HOSTNAME             Supply a server hostname used to populate
**                                 g.zBaseURL and similar.
*/
void cmd_test_xfer(void){
  int notUsed;
  const char *zHost;
  db_find_and_open_repository(0,0);
  zHost = find_option("host",0,1);
  verify_all_options();
  if( g.argc!=2 && g.argc!=3 ){
    usage("?MESSAGEFILE?");
  }
  db_must_be_within_tree();
  if( zHost==0 ) zHost = "localhost:8080";
  g.zBaseURL = mprintf("http://%s", zHost);
  g.zHttpsURL = mprintf("https://%s", zHost);
  g.zTop = mprintf("");
  blob_zero(&g.cgiIn);
  blob_read_from_file(&g.cgiIn, g.argc==2 ? "-" : g.argv[2]);
  blob_read_from_file(&g.cgiIn, g.argc==2 ? "-" : g.argv[2], ExtFILE);
  disableLogin = 1;
  page_xfer();
  printf("%s\n", cgi_extract_content(&notUsed));
  fossil_print("%s", cgi_extract_content());
}

/*
** Format strings for progress reporting.
*/
static const char zLabelFormat[] = "%-10s %10s %10s %10s %10s\n";
static const char zValueFormat[] = "\r%-10s %10d %10d %10d %10d\n";
static const char zBriefFormat[] =
   "Round-trips: %d   Artifacts sent: %d  received: %d\r";

#if INTERFACE
/*
** Flag options for controlling client_sync()
*/
#define SYNC_PUSH           0x00001    /* push content client to server */
#define SYNC_PULL           0x00002    /* pull content server to client */
#define SYNC_CLONE          0x00004    /* clone the repository */
#define SYNC_PRIVATE        0x00008    /* Also transfer private content */
#define SYNC_VERBOSE        0x00010    /* Extra diagnostics */
#define SYNC_RESYNC         0x00020    /* --verily */
#define SYNC_FROMPARENT     0x00040    /* Pull from the parent project */
#define SYNC_UNVERSIONED    0x00100    /* Sync unversioned content */
#define SYNC_UV_REVERT      0x00200    /* Copy server unversioned to client */
#define SYNC_UV_TRACE       0x00400    /* Describe UV activities */
#define SYNC_UV_DRYRUN      0x00800    /* Do not actually exchange files */
#define SYNC_IFABLE         0x01000    /* Inability to sync is not fatal */
#define SYNC_CKIN_LOCK      0x02000    /* Lock the current check-in */
#define SYNC_NOHTTPCOMPRESS 0x04000    /* Do not compression HTTP messages */
#define SYNC_ALLURL         0x08000    /* The --all flag - sync to all URLs */
#define SYNC_SHARE_LINKS    0x10000    /* Request alternate repo links */
#define SYNC_XVERBOSE       0x20000    /* Extra verbose.  Network traffic */
#endif

/*
** Floating-point absolute value
*/
static double fossil_fabs(double x){
  return x>0.0 ? x : -x;
}

/*
** Sync to the host identified in g.urlName and g.urlPath.  This
** Sync to the host identified in g.url.name and g.url.path.  This
** routine is called by the client.
**
** Records are pushed to the server if pushFlag is true.  Records
** are pulled if pullFlag is true.  A full sync occurs if both are
** true.
*/
void client_sync(
  int pushFlag,           /* True to do a push (or a sync) */
int client_sync(
  unsigned syncFlags,      /* Mask of SYNC_* flags */
  int pullFlag,           /* True to do a pull (or a sync) */
  int cloneFlag,          /* True if this is a clone */
  int configRcvMask,      /* Receive these configuration items */
  int configSendMask      /* Send these configuration items */
  unsigned configRcvMask,  /* Receive these configuration items */
  unsigned configSendMask, /* Send these configuration items */
  const char *zAltPCode,   /* Alternative project code (usually NULL) */
  int *pnRcvd              /* Set to # received artifacts, if not NULL */
){
  int go = 1;             /* Loop until zero */
  int nCardSent = 0;      /* Number of cards sent */
  int nCardRcvd = 0;      /* Number of cards received */
  int nCycle = 0;         /* Number of round trips to the server */
  int size;               /* Size of a config value */
  int size;               /* Size of a config value or uvfile */
  int nFileSend = 0;
  int origConfigRcvMask;  /* Original value of configRcvMask */
  int nFileRecv;          /* Number of files received */
  int mxPhantomReq = 200; /* Max number of phantoms to request per comm */
  const char *zCookie;    /* Server cookie */
  i64 nUncSent, nUncRcvd; /* Bytes sent and received (before compression) */
  int nSent, nRcvd;       /* Bytes sent and received (after compression) */
  i64 nSent, nRcvd;       /* Bytes sent and received (after compression) */
  int cloneSeqno = 1;     /* Sequence number for clones */
  Blob send;              /* Text we are sending to the server */
  Blob recv;              /* Reply we got back from the server */
  Xfer xfer;              /* Transfer data */
  int pctDone;            /* Percentage done with a message */
  int lastPctDone = -1;   /* Last displayed pctDone */
  double rArrivalTime;    /* Time at which a message arrived */
  const char *zSCode = db_get("server-code", "x");
  const char *zPCode = db_get("project-code", 0);
  int nErr = 0;           /* Number of errors */
  int nRoundtrip= 0;      /* Number of HTTP requests */
  int nArtifactSent = 0;  /* Total artifacts sent */
  int nArtifactRcvd = 0;  /* Total artifacts received */
  int nPriorArtifact = 0; /* Artifacts received on prior round-trips */
  const char *zOpType = 0;/* Push, Pull, Sync, Clone */
  double rSkew = 0.0;     /* Maximum time skew */
  int uvHashSent = 0;     /* The "pragma uv-hash" message has been sent */
  int uvDoPush = 0;       /* Generate uvfile messages to send to server */
  int uvPullOnly = 0;     /* 1: pull-only.  2: pull-only warning issued */
  int nUvGimmeSent = 0;   /* Number of uvgimme cards sent on this cycle */
  int nUvFileRcvd = 0;    /* Number of uvfile cards received on this cycle */
  sqlite3_int64 mtime;    /* Modification time on a UV file */
  int autopushFailed = 0; /* Autopush following commit failed if true */
  const char *zCkinLock;  /* Name of check-in to lock.  NULL for none */
  const char *zClientId;  /* A unique identifier for this check-out */
  unsigned int mHttpFlags;/* Flags for the http_exchange() subsystem */
  const int bOutIsTty = fossil_isatty(fossil_fileno(stdout));

  if( pnRcvd ) *pnRcvd = 0;
  if( db_get_boolean("dont-push", 0) ) pushFlag = 0;
  if( db_get_boolean("dont-push", 0) ) syncFlags &= ~SYNC_PUSH;
  if( pushFlag + pullFlag + cloneFlag == 0 
     && configRcvMask==0 && configSendMask==0 ) return;
  if( (syncFlags & (SYNC_PUSH|SYNC_PULL|SYNC_CLONE|SYNC_UNVERSIONED))==0
     && configRcvMask==0
     && configSendMask==0
  ){
    return 0;  /* Nothing to do */
  }

  /* Compute an appropriate project code.  zPCode is the project code
  ** for the local repository.  zAltPCode will usually be NULL, but might
  ** also be an alternative project code to expect on the server.  When
  ** zAltPCode is not NULL, that means we are doing a cross-project import -
  ** in other words, reading content from one project into a different
  ** project.
  */
  if( syncFlags & SYNC_FROMPARENT ){
    const char *zPX;
    configRcvMask = 0;
    configSendMask = 0;
    syncFlags &= ~(SYNC_PUSH);
    zPX = db_get("parent-project-code", 0);
    if( zPX==0 || db_get("parent-project-name",0)==0 ){
      fossil_fatal("there is no parent project: set the 'parent-project-code'"
                   " and 'parent-project-name' config parameters in order"
                   " to pull from a parent project");
    }
    if( zPX ){
      zAltPCode = zPX;
    }
  }
  if( zAltPCode!=0 && zPCode!=0 && sqlite3_stricmp(zPCode, zAltPCode)==0 ){
    zAltPCode = 0;
  }

  transport_stats(0, 0, 1);
  socket_global_init();
  memset(&xfer, 0, sizeof(xfer));
  xfer.pIn = &recv;
  xfer.pOut = &send;
  xfer.mxSend = db_get_int("max-upload", 250000);
  xfer.maxTime = -1;
  xfer.remoteVersion = RELEASE_VERSION_NUMBER;
  if( syncFlags & SYNC_PRIVATE ){
    g.perm.Private = 1;
    xfer.syncPrivate = 1;

  assert( pushFlag | pullFlag | cloneFlag | configRcvMask | configSendMask );
  }

  db_begin_transaction();
  db_record_repository_filename(0);
  db_multi_exec(
    "CREATE TEMP TABLE onremote(rid INTEGER PRIMARY KEY);"
  );
  blobarray_zero(xfer.aToken, count(xfer.aToken));
  blob_zero(&send);
  blob_zero(&recv);
  blob_zero(&xfer.err);
  blob_zero(&xfer.line);
  origConfigRcvMask = 0;
  nUncSent = nUncRcvd = 0;

  /* Send the send-private pragma if we are trying to sync private data */
  if( syncFlags & SYNC_PRIVATE ){
    blob_append(&send, "pragma send-private\n", -1);
  }

  /* Figure out which check-in to lock */
  if( syncFlags & SYNC_CKIN_LOCK ){
    int vid = db_lget_int("checkout",0);
    zCkinLock = db_text(0, "SELECT uuid FROM blob WHERE rid=%d", vid);
  }else{
    zCkinLock = 0;
  }
  zClientId = g.localOpen ? db_lget("client-id", 0) : 0;

  /* When syncing unversioned files, create a TEMP table in which to store
  ** the names of files that need to be sent from client to server.
  **
  ** The initial assumption is that all unversioned files need to be sent
  ** to the other side.  But "uvigot" cards received back from the remote
  ** side will normally cause many of these entries to be removed since they
  ** do not really need to be sent.
  */
  if( (syncFlags & (SYNC_UNVERSIONED|SYNC_CLONE))!=0 ){
    unversioned_schema();
    db_multi_exec(
       "CREATE TEMP TABLE IF NOT EXISTS uv_tosend("
       "  name TEXT PRIMARY KEY,"  /* Name of file to send client->server */
       "  mtimeOnly BOOLEAN"       /* True to only send mtime, not content */
       ") WITHOUT ROWID;"
       "REPLACE INTO uv_tosend(name,mtimeOnly)"
       "  SELECT name, 0 FROM unversioned WHERE hash IS NOT NULL;"
    );
  }

  /*
  ** Always begin with a clone, pull, or push message
  ** The request from the client always begin with a clone, pull,
  ** or push message.
  */
  blob_appendf(&send, "pragma client-version %d %d %d\n",
               RELEASE_VERSION_NUMBER, MANIFEST_NUMERIC_DATE,
               MANIFEST_NUMERIC_TIME);
  if( cloneFlag ){
    blob_appendf(&send, "clone\n");
    pushFlag = 0;
  if( syncFlags & SYNC_CLONE ){
    blob_appendf(&send, "clone 3 %d\n", cloneSeqno);
    syncFlags &= ~(SYNC_PUSH|SYNC_PULL);
    pullFlag = 0;
    nCardSent++;
    /* TBD: Request all transferable configuration values */
    content_enable_dephantomize(0);
    zOpType = "Clone";
  }else if( pullFlag ){
    blob_appendf(&send, "pull %s %s\n", zSCode, zPCode);
  }else if( syncFlags & SYNC_PULL ){
    blob_appendf(&send, "pull %s %s\n", zSCode,
                 zAltPCode ? zAltPCode : zPCode);
    nCardSent++;
    zOpType = (syncFlags & SYNC_PUSH)?"Sync":"Pull";
    if( (syncFlags & SYNC_RESYNC)!=0 && nCycle<2 ){
      blob_appendf(&send, "pragma send-catalog\n");
      nCardSent++;
  }
  if( pushFlag ){
    }
  }
  if( syncFlags & SYNC_PUSH ){
    blob_appendf(&send, "push %s %s\n", zSCode, zPCode);
    nCardSent++;
    if( (syncFlags & SYNC_PULL)==0 ) zOpType = "Push";
    if( (syncFlags & SYNC_RESYNC)!=0 ) xfer.resync = 0x7fffffff;
  }
  manifest_crosslink_begin();
  fossil_print(zLabelFormat, "", "Bytes", "Cards", "Artifacts", "Deltas");
  if( syncFlags & SYNC_VERBOSE ){
    fossil_print(zLabelFormat /*works-like:"%s%s%s%s%d"*/,
                 "", "Bytes", "Cards", "Artifacts", "Deltas");
  }

  /* Send the client-url pragma on the first cycle if the client has
  ** a known public url.
  */
  if( zAltPCode==0 ){
    const char *zSelfUrl = public_url();
    if( zSelfUrl ){
      blob_appendf(&send, "pragma client-url %s\n", zSelfUrl);
    }
  }

  /* Request URLs of alternative repositories
  */
  if( zAltPCode==0 && (syncFlags & SYNC_SHARE_LINKS)!=0 ){
    blob_appendf(&send, "pragma req-links\n");
  }

  while( go ){
    int newPhantom = 0;
    char *zRandomness;
    db_begin_transaction();
    db_record_repository_filename(0);
    db_multi_exec(
      "CREATE TEMP TABLE onremote(rid INTEGER PRIMARY KEY);"
      "CREATE TEMP TABLE unk(uuid TEXT PRIMARY KEY) WITHOUT ROWID;"
    );
    manifest_crosslink_begin();


    /* Send make the most recently received cookie.  Let the server
    ** figure out if this is a cookie that it cares about.
    /* Client sends the most recently received cookie back to the server.
    ** Let the server figure out if this is a cookie that it cares about.
    */
    zCookie = db_get("cookie", 0);
    if( zCookie ){
      blob_appendf(&send, "cookie %s\n", zCookie);
    }
    
    /* Generate gimme cards for phantoms and leaf cards

    /* Client sends gimme cards for phantoms
    ** for all leaves.
    */
    if( pullFlag || cloneFlag ){
    if( (syncFlags & SYNC_PULL)!=0
     || ((syncFlags & SYNC_CLONE)!=0 && cloneSeqno==1)
    ){
      request_phantoms(&xfer, mxPhantomReq);
    }
    if( pushFlag ){
    if( syncFlags & SYNC_PUSH ){
      send_unsent(&xfer);
      nCardSent += send_unclustered(&xfer);
      if( syncFlags & SYNC_PRIVATE ) send_private(&xfer);
    }

    /* Send configuration parameter requests.  On a clone, delay sending
    ** this until the second cycle since the login card might fail on 
    /* Client sends configuration parameter requests.  On a clone, delay sending
    ** this until the second cycle since the login card might fail on
    ** the first cycle.
    */
    if( configRcvMask && (cloneFlag==0 || nCycle>0) ){
    if( configRcvMask && ((syncFlags & SYNC_CLONE)==0 || nCycle>0) ){
      const char *zName;
      if( zOpType==0 ) zOpType = "Pull";
      zName = configure_first_name(configRcvMask);
      while( zName ){
        blob_appendf(&send, "reqconfig %s\n", zName);
        zName = configure_next_name(configRcvMask);
        nCardSent++;
      }
      if( configRcvMask & (CONFIGSET_USER|CONFIGSET_TKT) ){
        configure_prepare_to_receive(0);
      }
      origConfigRcvMask = configRcvMask;
      configRcvMask = 0;
    }

    /* Client sends a request to sync unversioned files.
    ** On a clone, delay sending this until the second cycle since
    ** the login card might fail on the first cycle.
    */
    if( (syncFlags & SYNC_UNVERSIONED)!=0
     && ((syncFlags & SYNC_CLONE)==0 || nCycle>0)
     && !uvHashSent
    ){
      blob_appendf(&send, "pragma uv-hash %s\n", unversioned_content_hash(0));
      nCardSent++;
      uvHashSent = 1;
    }

    /* Send configuration parameters being pushed */
    /* On a "fossil config push", the client send configuration parameters
    ** being pushed up to the server */
    if( configSendMask ){
      const char *zName;
      zName = configure_first_name(configSendMask);
      while( zName ){
        send_config_card(&xfer, zName);
        zName = configure_next_name(configSendMask);
        nCardSent++;
      }
      configSendMask = 0;
      if( zOpType==0 ) zOpType = "Push";
      nCardSent += configure_send_group(xfer.pOut, configSendMask, 0);
      configSendMask = 0;
    }

    /* Send unversioned files present here on the client but missing or
    ** obsolete on the server.
    **
    ** Or, if the SYNC_UV_REVERT flag is set, delete the local unversioned
    ** files that do not exist on the server.
    **
    ** This happens on the second exchange, since we do not know what files
    ** need to be sent until after the uvigot cards from the first exchange
    ** have been processed.
    */
    if( uvDoPush ){
      assert( (syncFlags & SYNC_UNVERSIONED)!=0 );
      if( syncFlags & SYNC_UV_DRYRUN ){
        uvDoPush = 0;
      }else if( syncFlags & SYNC_UV_REVERT ){
        db_multi_exec(
          "DELETE FROM unversioned"
          " WHERE name IN (SELECT name FROM uv_tosend);"
          "DELETE FROM uv_tosend;"
        );
        uvDoPush = 0;
      }else{
        Stmt uvq;
        int rc = SQLITE_OK;
        db_prepare(&uvq, "SELECT name, mtimeOnly FROM uv_tosend");
        while( (rc = db_step(&uvq))==SQLITE_ROW ){
          const char *zName = db_column_text(&uvq, 0);
          send_unversioned_file(&xfer, zName, db_column_int(&uvq,1));
          nCardSent++;
          nArtifactSent++;
          db_multi_exec("DELETE FROM uv_tosend WHERE name=%Q", zName);
          if( syncFlags & SYNC_VERBOSE ){
            fossil_print("\rUnversioned-file sent: %s\n", zName);
          }
          if( (int)blob_size(xfer.pOut)>xfer.mxSend ) break;
        }
        db_finalize(&uvq);
        if( rc==SQLITE_DONE ) uvDoPush = 0;
      }
    }

    /* Lock the current check-out */
    if( zCkinLock ){
      if( zClientId==0 ){
        zClientId = db_text(0, "SELECT lower(hex(randomblob(20)))");
        db_lset("client-id", zClientId);
      }
      blob_appendf(&send, "pragma ci-lock %s %s\n", zCkinLock, zClientId);
      zCkinLock = 0;
    }else if( zClientId ){
      blob_appendf(&send, "pragma ci-unlock %s\n", zClientId);
    }

    /* Append randomness to the end of the message.  This makes all
    /* Append randomness to the end of the uplink message.  This makes all
    ** messages unique so that that the login-card nonce will always
    ** be unique.
    */
    zRandomness = db_text(0, "SELECT hex(randomblob(20))");
    blob_appendf(&send, "# %s\n", zRandomness);
    free(zRandomness);

    if( (syncFlags & SYNC_VERBOSE)!=0
     && (syncFlags & SYNC_XVERBOSE)==0
    ){
      fossil_print("waiting for server...");
    }
    fflush(stdout);
    /* Exchange messages with the server */
    if( (syncFlags & SYNC_CLONE)!=0 && nCycle==0 ){
      /* Do not send a login card on the first round-trip of a clone */
      mHttpFlags = 0;
    }else{
      mHttpFlags = HTTP_USE_LOGIN;
    }
    if( syncFlags & SYNC_NOHTTPCOMPRESS ){
      mHttpFlags |= HTTP_NOCOMPRESS;
    }
    if( syncFlags & SYNC_XVERBOSE ){
      mHttpFlags |= HTTP_VERBOSE;
    }
    nFileSend = xfer.nFileSent + xfer.nDeltaSent;
    fossil_print(zValueFormat, "Send:",
                 blob_size(&send), nCardSent+xfer.nGimmeSent+xfer.nIGotSent,
                 xfer.nFileSent, xfer.nDeltaSent);

    /* Do the round-trip to the server */
    if( http_exchange(&send, &recv, mHttpFlags, MAX_REDIRECTS, 0) ){
      nErr++;
      go = 2;
      break;
    }

    /* Remember the URL of the sync target in the config file on the
    ** first successful round-trip */
    if( nCycle==0 && db_is_writeable("repository") ){
      xfer_syncwith(g.url.canonical, 0);
    }

    /* Output current stats */
    if( syncFlags & SYNC_VERBOSE ){
      fossil_print(zValueFormat /*works-like:"%s%d%d%d%d"*/, "Sent:",
                   blob_size(&send), nCardSent+xfer.nGimmeSent+xfer.nIGotSent,
                   xfer.nFileSent, xfer.nDeltaSent);
    }else{
      nRoundtrip++;
      nArtifactSent += xfer.nFileSent + xfer.nDeltaSent;
      if( bOutIsTty!=0 ){
        fossil_print(zBriefFormat /*works-like:"%d%d%d"*/,
                     nRoundtrip, nArtifactSent, nArtifactRcvd);
      }
    }
    nCardSent = 0;
    nCardRcvd = 0;
    xfer.nFileSent = 0;
    xfer.nDeltaSent = 0;
    xfer.nGimmeSent = 0;
    xfer.nIGotSent = 0;
    xfer.nPrivIGot = 0;
    fflush(stdout);
    http_exchange(&send, &recv, cloneFlag==0 || nCycle>0);

    lastPctDone = -1;
    nUncSent += blob_size(&send);
    blob_reset(&send);
    blob_appendf(&send, "pragma client-version %d %d %d\n",
                 RELEASE_VERSION_NUMBER, MANIFEST_NUMERIC_DATE,
                 MANIFEST_NUMERIC_TIME);
    rArrivalTime = db_double(0.0, "SELECT julianday('now')");

    /* Send the send-private pragma if we are trying to sync private data */
    if( syncFlags & SYNC_PRIVATE ){
      blob_append(&send, "pragma send-private\n", -1);
    }

    /* Begin constructing the next message (which might never be
    ** sent) by beginning with the pull or push cards
    */
    if( pullFlag ){
      blob_appendf(&send, "pull %s %s\n", zSCode, zPCode);
    if( syncFlags & SYNC_PULL ){
      blob_appendf(&send, "pull %s %s\n", zSCode,
                   zAltPCode ? zAltPCode : zPCode);
      nCardSent++;
    }
    if( pushFlag ){
    if( syncFlags & SYNC_PUSH ){
      blob_appendf(&send, "push %s %s\n", zSCode, zPCode);
      nCardSent++;
    }
    go = 0;
    nUvGimmeSent = 0;
    nUvFileRcvd = 0;
    nPriorArtifact = nArtifactRcvd;

    /* Process the reply that came back from the server */
    while( blob_line(&recv, &xfer.line) ){
      if( blob_buffer(&xfer.line)[0]=='#' ){
        const char *zLine = blob_buffer(&xfer.line);
        if( memcmp(zLine, "# timestamp ", 12)==0 ){
          char zTime[20];
          double rDiff;
          sqlite3_snprintf(sizeof(zTime), zTime, "%.19s", &zLine[12]);
          rDiff = db_double(9e99, "SELECT julianday('%q') - %.17g",
                            zTime, rArrivalTime);
          if( rDiff>9e98 || rDiff<-9e98 ) rDiff = 0.0;
          if( rDiff*24.0*3600.0 >= -(blob_size(&recv)/5000.0 + 20) ){
            rDiff = 0.0;
          }
          if( fossil_fabs(rDiff)>fossil_fabs(rSkew) ) rSkew = rDiff;
        }
        nCardRcvd++;
        continue;
      }
      xfer.nToken = blob_tokenize(&xfer.line, xfer.aToken, count(xfer.aToken));
      nCardRcvd++;
      if( (syncFlags & SYNC_VERBOSE)!=0 && recv.nUsed>0 ){
        pctDone = (recv.iCursor*100)/recv.nUsed;
      if( !g.cgiOutput && !g.fQuiet ){
        printf("\r%d", nCardRcvd);
        fflush(stdout);
      }

      /*   file UUID SIZE \n CONTENT
      **   file UUID DELTASRC SIZE \n CONTENT
        if( pctDone!=lastPctDone ){
          fossil_print("\rprocessed: %d%%         ", pctDone);
          lastPctDone = pctDone;
          fflush(stdout);
        }
      }

      /*   file HASH SIZE \n CONTENT
      **   file HASH DELTASRC SIZE \n CONTENT
      **
      ** Receive a file transmitted from the server.
      ** Client receives a file transmitted from the server.
      */
      if( blob_eq(&xfer.aToken[0],"file") ){
        xfer_accept_file(&xfer);
        xfer_accept_file(&xfer, (syncFlags & SYNC_CLONE)!=0, 0, 0);
        nArtifactRcvd++;
      }else

      /*   cfile HASH USIZE CSIZE \n CONTENT
      **   cfile HASH DELTASRC USIZE CSIZE \n CONTENT
      **
      ** Client receives a compressed file transmitted from the server.
      */
      if( blob_eq(&xfer.aToken[0],"cfile") ){
        xfer_accept_compressed_file(&xfer, 0, 0);
        nArtifactRcvd++;
      }else

      /*   uvfile NAME MTIME HASH SIZE FLAGS \n CONTENT
      **
      ** Client accepts an unversioned file from the server.
      */
      if( blob_eq(&xfer.aToken[0], "uvfile") ){
        xfer_accept_unversioned_file(&xfer, 1);
        nArtifactRcvd++;
        nUvFileRcvd++;
        if( syncFlags & SYNC_VERBOSE ){
          fossil_print("\rUnversioned-file received: %s\n",
                       blob_str(&xfer.aToken[1]));
        }
      }else

      /*   gimme UUID
      /*   gimme HASH
      **
      ** Client receives an artifact request from the server.
      ** Server is requesting a file.  If the file is a manifest, assume
      ** that the server will also want to know all of the content files
      ** associated with the manifest and send those too.
      ** If the file is a manifest, assume that the server will also want
      ** to know all of the content artifacts associated with the manifest
      ** and send those too.
      */
      if( blob_eq(&xfer.aToken[0], "gimme")
       && xfer.nToken==2
       && blob_is_uuid(&xfer.aToken[1])
       && blob_is_hname(&xfer.aToken[1])
      ){
        remote_unk(&xfer.aToken[1]);
        if( pushFlag ){
          int rid = rid_from_uuid(&xfer.aToken[1], 0);
        if( syncFlags & SYNC_PUSH ){
          int rid = rid_from_uuid(&xfer.aToken[1], 0, 0);
          if( rid ) send_file(&xfer, rid, &xfer.aToken[1], 0);
        }
      }else
  
      /*   igot UUID

      /*   igot HASH  ?PRIVATEFLAG?
      **
      ** Server announces that it has a particular file.  If this is
      ** not a file that we have and we are pulling, then create a
      ** phantom to cause this file to be requested on the next cycle.
      ** Always remember that the server has this file so that we do
      ** not transmit it by accident.
      **
      ** If the PRIVATE argument exists and is 1, then the file is
      ** private.  Pretend it does not exists if we are not pulling
      ** private files.
      */
      if( xfer.nToken==2
      if( xfer.nToken>=2
       && blob_eq(&xfer.aToken[0], "igot")
       && blob_is_uuid(&xfer.aToken[1])
       && blob_is_hname(&xfer.aToken[1])
      ){
        int rid;
        int isPriv = xfer.nToken>=3 && blob_eq(&xfer.aToken[2],"1");
        int rid = rid_from_uuid(&xfer.aToken[1], 0);
        rid = rid_from_uuid(&xfer.aToken[1], 0, 0);
        if( rid>0 ){
          if( isPriv ){
            content_make_private(rid);
          }else{
          content_make_public(rid);
        }else if( pullFlag || cloneFlag ){
          rid = content_new(blob_str(&xfer.aToken[1]));
            content_make_public(rid);
          }
        }else if( isPriv && !g.perm.Private ){
          /* ignore private files */
        }else if( (syncFlags & (SYNC_PULL|SYNC_CLONE))!=0 ){
          rid = content_new(blob_str(&xfer.aToken[1]), isPriv);
          if( rid ) newPhantom = 1;
        }
        remote_has(rid);
      }else
    
      

      /*   uvigot NAME MTIME HASH SIZE
      **
      ** Server announces that it has a particular unversioned file.  The
      ** server will only send this card if the client had previously sent
      ** a "pragma uv-hash" card with a hash that does not match.
      **
      ** If the identified file needs to be transferred, then setup for the
      ** transfer.  Generate a "uvgimme" card in the reply if the server
      ** version is newer than the client.  Generate a "uvfile" card if
      ** the client version is newer than the server.  If HASH is "-"
      ** (indicating that the file has been deleted) and MTIME is newer,
      ** then do the deletion.
      */
      if( xfer.nToken==5
       && blob_eq(&xfer.aToken[0], "uvigot")
       && blob_is_filename(&xfer.aToken[1])
       && blob_is_int64(&xfer.aToken[2], &mtime)
       && blob_is_int(&xfer.aToken[4], &size)
       && (blob_eq(&xfer.aToken[3],"-") || blob_is_hname(&xfer.aToken[3]))
      ){
        const char *zName = blob_str(&xfer.aToken[1]);
        const char *zHash = blob_str(&xfer.aToken[3]);
        int iStatus;
        if( mtime<0 || size<0 ){
          xfer_fatal_error("invalid uvigot");
          return ++nErr;
        }
        iStatus = unversioned_status(zName, mtime, zHash);
        if( (syncFlags & SYNC_UV_REVERT)!=0 ){
          if( iStatus==4 ) iStatus = 2;
          if( iStatus==5 ) iStatus = 1;
        }
        if( syncFlags & (SYNC_UV_TRACE|SYNC_UV_DRYRUN) ){
          const char *zMsg = 0;
          switch( iStatus ){
            case 0:
            case 1: zMsg = "UV-PULL";             break;
            case 2: zMsg = "UV-PULL-MTIME-ONLY";  break;
            case 4: zMsg = "UV-PUSH-MTIME-ONLY";  break;
            case 5: zMsg = "UV-PUSH";             break;
          }
          if( zMsg ) fossil_print("\r%s: %s\n", zMsg, zName);
          if( syncFlags & SYNC_UV_DRYRUN ){
            iStatus = 99;  /* Prevent any changes or reply messages */
          }
        }
        if( iStatus<=1 ){
          if( zHash[0]!='-' ){
            blob_appendf(xfer.pOut, "uvgimme %s\n", zName);
            nCardSent++;
            nUvGimmeSent++;
            db_multi_exec("DELETE FROM unversioned WHERE name=%Q", zName);
          }else if( iStatus==1 ){
            db_multi_exec(
               "UPDATE unversioned"
               "   SET mtime=%lld, hash=NULL, sz=0, encoding=0, content=NULL"
               " WHERE name=%Q", mtime, zName
            );
            db_unset("uv-hash", 0);
          }
        }else if( iStatus==2 ){
          db_multi_exec(
            "UPDATE unversioned SET mtime=%lld WHERE name=%Q", mtime, zName
          );
          db_unset("uv-hash", 0);
        }
        if( iStatus>=4 && uvPullOnly==1 ){
          fossil_warning(
            "Warning: uv-pull-only                                       \n"
            "         Unable to push unversioned content because you lack\n"
            "         sufficient permission on the server\n"
          );
          uvPullOnly = 2;
        }
        if( iStatus<=3 || uvPullOnly ){
          db_multi_exec("DELETE FROM uv_tosend WHERE name=%Q", zName);
        }else if( iStatus==4 ){
          db_multi_exec("UPDATE uv_tosend SET mtimeOnly=1 WHERE name=%Q",zName);
        }else if( iStatus==5 ){
          db_multi_exec("REPLACE INTO uv_tosend(name,mtimeOnly) VALUES(%Q,0)",
                        zName);
        }
      }else

      /*   push  SERVERCODE  PRODUCTCODE
      **
      ** Should only happen in response to a clone.  This message tells
      ** the client what product to use for the new database.
      ** the client what product code to use for the new database.
      */
      if( blob_eq(&xfer.aToken[0],"push")
       && xfer.nToken==3
       && cloneFlag
       && (syncFlags & SYNC_CLONE)!=0
       && blob_is_uuid(&xfer.aToken[1])
       && blob_is_uuid(&xfer.aToken[2])
       && blob_is_hname(&xfer.aToken[2])
      ){
        if( blob_eq_str(&xfer.aToken[1], zSCode, -1) ){
          fossil_fatal("server loop");
        }
        if( zPCode==0 ){
          zPCode = mprintf("%b", &xfer.aToken[2]);
          db_set("project-code", zPCode, 0);
        }
        blob_appendf(&send, "clone\n");
        if( cloneSeqno>0 ) blob_appendf(&send, "clone 3 %d\n", cloneSeqno);
        nCardSent++;
      }else
      

      /*   config NAME SIZE \n CONTENT
      **
      ** Receive a configuration value from the server.
      ** Client receive a configuration value from the server.
      **
      ** The received configuration setting is silently ignored if it was
      ** not requested by a prior "reqconfig" sent from client to server.
      */
      if( blob_eq(&xfer.aToken[0],"config") && xfer.nToken==3
          && blob_is_int(&xfer.aToken[2], &size) ){
        const char *zName = blob_str(&xfer.aToken[1]);
        Blob content;
        if( size<0 ){
          xfer_fatal_error("invalid config record");
          return ++nErr;
        }
        blob_zero(&content);
        blob_extract(xfer.pIn, size, &content);
        g.okAdmin = g.okRdAddr = 1;
        if( configure_is_exportable(zName) & origConfigRcvMask ){
        g.perm.Admin = g.perm.RdAddr = 1;
        configure_receive(zName, &content, origConfigRcvMask);
          if( zName[0]!='@' ){
            if( strcmp(zName, "logo-image")==0 ){
              Stmt ins;
              db_prepare(&ins,
                "REPLACE INTO config(name, value) VALUES(:name, :value)"
              );
              db_bind_text(&ins, ":name", zName);
              db_bind_blob(&ins, ":value", &content);
              db_step(&ins);
              db_finalize(&ins);
            }else{
              db_multi_exec(
                  "REPLACE INTO config(name,value) VALUES(%Q,%Q)",
                  zName, blob_str(&content)
              );
            }
          }else{
            /* Notice that we are evaluating arbitrary SQL received from the
            ** server.  But this can only happen if we have specifically
            ** requested configuration information from the server, so
            ** presumably the operator trusts the server.
            */
            db_multi_exec("%s", blob_str(&content));
          }
        }
        nCardSent++;
        nCardRcvd++;
        nArtifactRcvd++;
        blob_reset(&content);
        blob_seek(xfer.pIn, 1, BLOB_SEEK_CUR);
      }else

      

      /*    cookie TEXT
      **
      ** The server might include a cookie in its reply.  The client
      ** The client reserves a cookie from the server.  The client
      ** should remember this cookie and send it back to the server
      ** in its next query.
      **
      ** Each cookie received overwrites the prior cookie from the
      ** same server.
      */
      if( blob_eq(&xfer.aToken[0], "cookie") && xfer.nToken==2 ){
        db_set("cookie", blob_str(&xfer.aToken[1]), 0);
      }else


      /*    private
      **
      ** The server tells the client that the next "file" or "cfile" will
      ** contain private content.
      */
      if( blob_eq(&xfer.aToken[0], "private") ){
        xfer.nextIsPrivate = 1;
      }else


      /*    clone_seqno N
      **
      ** When doing a clone, the server tries to send all of its artifacts
      ** in sequence.  This card indicates the sequence number of the next
      ** blob that needs to be sent.  If N<=0 that indicates that all blobs
      ** have been sent.
      */
      if( blob_eq(&xfer.aToken[0], "clone_seqno") && xfer.nToken==2 ){
        blob_is_int(&xfer.aToken[1], &cloneSeqno);
        if( cloneSeqno<0 ){
          xfer_fatal_error("invalid clone_seqno");
          return ++nErr;
        }
      }else

      /*   message MESSAGE
      **
      ** A message is received from the server.  Print it.
      ** Print a message.  Similar to "error" but does not stop processing.
      ** Similar to "error" but does not stop processing.
      **
      ** If the "login failed" message is seen, clear the sync password prior
      ** to the next cycle.
      */        
      */
      if( blob_eq(&xfer.aToken[0],"message") && xfer.nToken==2 ){
        char *zMsg = blob_terminate(&xfer.aToken[1]);
        defossilize(zMsg);
        if( (syncFlags & SYNC_PUSH) && zMsg
            && sqlite3_strglob("pull only *", zMsg)==0 ){
          syncFlags &= ~SYNC_PUSH;
          zMsg = 0;
        }
        if( zMsg && zMsg[0] ){
          fossil_force_newline();
        if( zMsg ) fossil_print("\rServer says: %s\n", zMsg);
          fossil_print("Server says: %s\n", zMsg);
        }
      }else

      /*    pragma NAME VALUE...
      **
      ** The server can send pragmas to try to convey meta-information to
      ** the client.  These are informational only.  Unknown pragmas are
      ** silently ignored.
      */
      if( blob_eq(&xfer.aToken[0], "pragma") && xfer.nToken>=2 ){
        /*   pragma server-version VERSION ?DATE? ?TIME?
        **
        ** The server announces to the server what version of Fossil it
        ** is running.  The DATE and TIME are a pure numeric ISO8601 time
        ** for the specific check-in of the client.
        */
        if( xfer.nToken>=3 && blob_eq(&xfer.aToken[1], "server-version") ){
          xfer.remoteVersion = atoi(blob_str(&xfer.aToken[2]));
          if( xfer.nToken>=5 ){
            xfer.remoteDate = atoi(blob_str(&xfer.aToken[3]));
            xfer.remoteTime = atoi(blob_str(&xfer.aToken[4]));
          }
        }

        /*   pragma uv-pull-only
        **   pragma uv-push-ok
        **
        ** If the server is unwilling to accept new unversioned content (because
        ** this client lacks the necessary permissions) then it sends a
        ** "uv-pull-only" pragma so that the client will know not to waste
        ** bandwidth trying to upload unversioned content.  If the server
        ** does accept new unversioned content, it sends "uv-push-ok".
        */
        else if( syncFlags & SYNC_UNVERSIONED ){
          if( blob_eq(&xfer.aToken[1], "uv-pull-only") ){
            uvPullOnly = 1;
            if( syncFlags & SYNC_UV_REVERT ) uvDoPush = 1;
          }else if( blob_eq(&xfer.aToken[1], "uv-push-ok") ){
            uvDoPush = 1;
          }
        }

        /*    pragma ci-lock-fail  USER-HOLDING-LOCK  LOCK-TIME
        **
        ** The server generates this message when a "pragma ci-lock"
        ** is attempted on a check-in for which there is an existing
        ** lock.  USER-HOLDING-LOCK is the name of the user who originated
        ** the lock, and LOCK-TIME is the timestamp (seconds since 1970)
        ** when the lock was taken.
        */
        else if( blob_eq(&xfer.aToken[1], "ci-lock-fail") && xfer.nToken==4 ){
          char *zUser = blob_terminate(&xfer.aToken[2]);
          sqlite3_int64 mtime, iNow;
          defossilize(zUser);
          iNow = time(NULL);
          if( blob_is_int64(&xfer.aToken[3], &mtime) && iNow>mtime ){
            if( mtime<0 ){
              xfer_fatal_error("invalid ci-lock-fail time");
              return ++nErr;
            }
            iNow = time(NULL);
            fossil_print("\nParent check-in locked by %s %s ago\n",
               zUser, human_readable_age((iNow+1-mtime)/86400.0));
          }else{
            fossil_print("\nParent check-in locked by %s\n", zUser);
          }
          g.ckinLockFail = fossil_strdup(zUser);
        }

        /*    pragma avoid-delta-manifests
        **
        ** Discourage the use of delta manifests.  The remote side sends
        ** this pragma when its forbid-delta-manifests setting is true.
        */
        else if( blob_eq(&xfer.aToken[1], "avoid-delta-manifests") ){
          g.bAvoidDeltaManifests = 1;
        }

        /*    pragma link URL ARG MTIME
        **
        ** The server has sent the URL for a link to another repository.
        ** Record this as a link:URL entry in the config table.
        */
        else if( blob_eq(&xfer.aToken[1], "link")
              && xfer.nToken==5
              && (syncFlags & SYNC_SHARE_LINKS)!=0
        ){
          UrlData x;
          char *zUrl = blob_str(&xfer.aToken[2]);
          char *zArg = blob_str(&xfer.aToken[3]);
          i64 iTime = strtoll(blob_str(&xfer.aToken[4]),0,0);
          memset(&x, 0, sizeof(x));
          defossilize(zUrl);
          defossilize(zArg);
          url_parse_local(zUrl, URL_OMIT_USER, &x);
          if( x.protocol
           && strncmp(x.protocol,"http",4)==0
           && iTime>0
          ){
            db_unprotect(PROTECT_CONFIG);
            db_multi_exec(
              "INSERT INTO config(name,value,mtime)\n"
              " VALUES('link:%q',%Q,%lld)\n"
              " ON CONFLICT DO UPDATE\n"
              "   SET value=excluded.value, mtime=excluded.mtime\n"
              "   WHERE mtime<excluded.mtime;",
              zUrl, zArg, iTime
            );
            db_protect_pop();
          }
          url_unparse(&x);
        }

      }else

      /*   error MESSAGE
      **
      ** The server is reporting an error.  The client will abandon
      ** Report an error and abandon the sync session.
      ** the sync session.
      **
      ** Except, when cloning we will sometimes get an error on the
      ** first message exchange because the project-code is unknown
      ** and so the login card on the request was invalid.  The project-code
      ** is returned in the reply before the error card, so second and 
      ** is returned in the reply before the error card, so second and
      ** subsequent messages should be OK.  Nevertheless, we need to ignore
      ** the error card on the first message of a clone.
      **
      ** Also ignore "not authorized to write" errors if this is an
      ** autopush following a commit.
      */        
      */
      if( blob_eq(&xfer.aToken[0],"error") && xfer.nToken==2 ){
        if( !cloneFlag || nCycle>0 ){
          char *zMsg = blob_terminate(&xfer.aToken[1]);
          defossilize(zMsg);
        char *zMsg = blob_terminate(&xfer.aToken[1]);
        defossilize(zMsg);
          if( strcmp(zMsg, "login failed")==0 ){
            if( nCycle<2 ){
        if( (syncFlags & SYNC_IFABLE)!=0
              if( !g.dontKeepUrl ) db_unset("last-sync-pw", 0);
              go = 1;
         && sqlite3_strlike("%not authorized to write%",zMsg,0)==0 ){
          autopushFailed = 1;
            }
          }else{
            blob_appendf(&xfer.err, "\rserver says: %s", zMsg);
          nErr++;
        }else if( (syncFlags & SYNC_CLONE)==0 || nCycle>0 ){
          fossil_force_newline();
          fossil_print("Error: %s\n", zMsg);
          blob_appendf(&xfer.err, "server says: %s\n", zMsg);
          }
          fossil_fatal("\rError: %s", zMsg);
          nErr++;
          break;
        }
      }else

      /* Unknown message */
      {
      if( xfer.nToken>0 ){
        if( blob_str(&xfer.aToken[0])[0]=='<' ){
          fossil_fatal(
          fossil_warning(
            "server replies with HTML instead of fossil sync protocol:\n%b",
            &recv
          );
          nErr++;
          break;
        }
        blob_appendf(&xfer.err, "unknown command: %b", &xfer.aToken[0]);
        blob_appendf(&xfer.err, "unknown command: [%b]\n", &xfer.aToken[0]);
      }

      if( blob_size(&xfer.err) ){
        fossil_force_newline();
        fossil_fatal("%b", &xfer.err);
        fossil_warning("%b", &xfer.err);
        nErr++;
        break;
      }
      blobarray_reset(xfer.aToken, xfer.nToken);
      blob_reset(&xfer.line);
    }
    if( origConfigRcvMask & (CONFIGSET_TKT|CONFIGSET_USER) ){
      configure_finalize_receive();
    }
    origConfigRcvMask = 0;
    if( nCardRcvd>0 ){
      fossil_print(zValueFormat, "Received:",
    if( nCardRcvd>0 && (syncFlags & SYNC_VERBOSE) ){
      fossil_print(zValueFormat /*works-like:"%s%d%d%d%d"*/, "Received:",
                   blob_size(&recv), nCardRcvd,
                   xfer.nFileRcvd, xfer.nDeltaRcvd + xfer.nDanglingFile);
    }else{
      if( bOutIsTty!=0 ){
        fossil_print(zBriefFormat /*works-like:"%d%d%d"*/,
                     nRoundtrip, nArtifactSent, nArtifactRcvd);
    }
      }
    }
    nUncRcvd += blob_size(&recv);
    blob_reset(&recv);
    nCycle++;

    /* If we received one or more files on the previous exchange but
    ** there are still phantoms, then go another round.
    /* Set go to 1 if we need to continue the sync/push/pull/clone for
    ** another round.  Set go to 0 if it is time to quit. */
    */
    nFileRecv = xfer.nFileRcvd + xfer.nDeltaRcvd + xfer.nDanglingFile;
    if( (nFileRecv>0 || newPhantom) && db_exists("SELECT 1 FROM phantom") ){
      go = 1;
      mxPhantomReq = nFileRecv*2;
      if( mxPhantomReq<200 ) mxPhantomReq = 200;
    }else if( xfer.nFileSent+xfer.nDeltaSent>0 || uvDoPush ){
      /* Go another round if files are queued to send */
      go = 1;
    }else if( xfer.nPrivIGot>0 && nCycle==1 ){
      go = 1;
    }else if( nUvGimmeSent>0 && (nUvFileRcvd>0 || nCycle<3) ){
      /* Continue looping as long as new uvfile cards are being received
      ** and uvgimme cards are being sent. */
      go = 1;
    }else if( (syncFlags & SYNC_CLONE)!=0 ){
      if( nCycle==1 ){
        go = 1;   /* go at least two rounds on a clone */
      }else if( nFileRecv>0 ){
        go = 1;
      }else if( cloneSeqno>0 && nArtifactRcvd>nPriorArtifact ){
        /* Continue the clone until we see the clone_seqno 0" card or
        ** until we stop receiving artifacts */
        go = 1;
    }
      }
    }

    nCardRcvd = 0;
    xfer.nFileRcvd = 0;
    xfer.nDeltaRcvd = 0;
    xfer.nDanglingFile = 0;

    db_multi_exec("DROP TABLE onremote; DROP TABLE unk;");
    /* If we have one or more files queued to send, then go
    ** another round 
    */
    if( xfer.nFileSent+xfer.nDeltaSent>0 ){
      go = 1;
    }

    if( go ){
      manifest_crosslink_end(MC_PERMIT_HOOKS);
    }else{
      manifest_crosslink_end(MC_PERMIT_HOOKS);
      content_enable_dephantomize(1);
    }
    /* If this is a clone, the go at least two rounds */
    if( cloneFlag && nCycle==1 ) go = 1;
    db_end_transaction(0);
  };
  transport_stats(&nSent, &nRcvd, 1);
  if( pnRcvd ) *pnRcvd = nArtifactRcvd;
  if( (rSkew*24.0*3600.0) > 10.0 ){
     fossil_warning("*** time skew *** server is fast by %s",
                    db_timespan_name(rSkew));
     g.clockSkewSeen = 1;
  }else if( rSkew*24.0*3600.0 < -10.0 ){
     fossil_warning("*** time skew *** server is slow by %s",
                    db_timespan_name(-rSkew));
     g.clockSkewSeen = 1;
  }
  if( bOutIsTty==0 ){
    fossil_print(zBriefFormat /*works-like:"%d%d%d"*/,
                 nRoundtrip, nArtifactSent, nArtifactRcvd);
    fossil_force_newline();
  }
  fossil_force_newline();
  if( g.zHttpCmd==0 ){
    if( syncFlags & SYNC_VERBOSE ){
  fossil_print("Total network traffic: %d bytes sent, %d bytes received\n",
               nSent, nRcvd);
  transport_close();
  transport_global_shutdown();
  db_multi_exec("DROP TABLE onremote");
  manifest_crosslink_end();
  db_end_transaction(0);
}
      fossil_print(
        "%s done, wire bytes sent: %lld  received: %lld  remote: %s%s\n",
        zOpType, nSent, nRcvd,
        (g.url.name && g.url.name[0]!='\0') ? g.url.name : "",
        (g.zIpAddr && g.zIpAddr[0]!='\0'
          && fossil_strcmp(g.zIpAddr, g.url.name))
          ? mprintf(" (%s)", g.zIpAddr) : "");
    }else{
      fossil_print(
        "%s done, wire bytes sent: %lld  received: %lld  remote: %s\n",
          zOpType, nSent, nRcvd, g.zIpAddr);
    }
  }
  if( syncFlags & SYNC_VERBOSE ){
    fossil_print(
      "Uncompressed payload sent: %lld  received: %lld\n", nUncSent, nUncRcvd);
  }
  blob_reset(&send);
  blob_reset(&recv);
  transport_close(&g.url);
  transport_global_shutdown(&g.url);
  if( nErr && go==2 ){
    db_multi_exec("DROP TABLE onremote; DROP TABLE unk;");
    manifest_crosslink_end(MC_PERMIT_HOOKS);
    content_enable_dephantomize(1);
    db_end_transaction(0);
  }
  if( nErr && autopushFailed ){
    fossil_warning(
      "Warning: The check-in was successful and is saved locally but you\n"
      "         are not authorized to push the changes back to the server\n"
      "         at %s",
      g.url.canonical
    );
    nErr--;
  }
  if( (syncFlags & SYNC_CLONE)==0 && g.rcvid && fossil_any_has_fork(g.rcvid) ){
    fossil_warning("***** WARNING: a fork has occurred *****\n"
                   "use \"fossil leaves -multiple\" for more details.");
  }
  return nErr;
}
Added src/xfersetup.c.




















































































































































































































































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/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code to implement the transfer configuration
** setup screens.
*/
#include "config.h"
#include "xfersetup.h"
#include <assert.h>

/*
** WEBPAGE: xfersetup
** Main sub-menu for configuring the transfer system.
*/
void xfersetup_page(void){
  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }

  style_header("Transfer Setup");

  @ <table class="xfersetup">
  setup_menu_entry("Common", "xfersetup_com",
    "Common TH1 code run before all transfer request processing.");
  setup_menu_entry("Push", "xfersetup_push",
    "Specific TH1 code to run after \"push\" transfer requests.");
  setup_menu_entry("Commit", "xfersetup_commit",
    "Specific TH1 code to run after processing a commit.");
  setup_menu_entry("Ticket", "xfersetup_ticket",
    "Specific TH1 code to run after processing a ticket change.");
  @ </table>

  url_parse(0, URL_USE_CONFIG);
  if( g.url.protocol ){
    unsigned syncFlags;
    const char *zButton;
    char *zWarning;

    if( db_get_boolean("dont-push", 0) ){
      syncFlags = SYNC_PULL;
      zButton = "Pull";
      zWarning = 0;
    }else{
      syncFlags = SYNC_PUSH | SYNC_PULL;
      zButton = "Synchronize";
      zWarning = mprintf("WARNING: Pushing to \"%s\" is enabled.",
                         g.url.canonical);
    }
    @ <p>Press the <strong>%h(zButton)</strong> button below to
    @ synchronize with the <em>%h(g.url.canonical)</em> repository now.<br>
    @ This may be useful when testing the various transfer scripts.</p>
    @ <p>You can use the <code>http -async</code> command in your scripts, but
    @ make sure the <code>th1-uri-regexp</code> setting is set first.</p>
    if( zWarning ){
      @
      @ <big><b>%h(zWarning)</b></big>
      free(zWarning);
    }
    @
    @ <form method="post" action="%R/%s(g.zPath)"><div>
    login_insert_csrf_secret();
    @ <input type="submit" name="sync" value="%h(zButton)">
    @ </div></form>
    @
    if( P("sync") ){
      user_select();
      url_enable_proxy(0);
      @ <pre class="xfersetup">
      client_sync(syncFlags, 0, 0, 0, 0);
      @ </pre>
    }
  }

  style_finish_page();
}

/*
** Common implementation for the transfer setup editor pages.
*/
static void xfersetup_generic(
  const char *zTitle,           /* Page title */
  const char *zDbField,         /* Configuration field being edited */
  const char *zDfltValue,       /* Default text value */
  const char *zDesc,            /* Description of this field */
  char *(*xText)(const char*),  /* Validity test or NULL */
  void (*xRebuild)(void),       /* Run after successful update */
  int height                    /* Height of the edit box */
){
  const char *z;
  int isSubmit;

  login_check_credentials();
  if( !g.perm.Setup ){
    login_needed(0);
    return;
  }
  if( P("setup") ){
    cgi_redirect("xfersetup");
  }
  isSubmit = P("submit")!=0;
  z = P("x");
  if( z==0 ){
    z = db_get(zDbField, zDfltValue);
  }
  style_set_current_feature("xfersetup");
  style_header("Edit %s", zTitle);
  if( P("clear")!=0 && cgi_csrf_safe(2) ){
    db_unset(zDbField/*works-like:"x"*/, 0);
    if( xRebuild ) xRebuild();
    z = zDfltValue;
  }else if( isSubmit && cgi_csrf_safe(2) ){
    char *zErr = 0;
    if( xText && (zErr = xText(z))!=0 ){
      @ <p class="xfersetupError">ERROR: %h(zErr)</p>
    }else{
      db_set(zDbField/*works-like:"x"*/, z, 0);
      if( xRebuild ) xRebuild();
      cgi_redirect("xfersetup");
    }
  }
  @ <form action="%R/%s(g.zPath)" method="post"><div>
  login_insert_csrf_secret();
  @ <p>%s(zDesc)</p>
  @ <textarea name="x" rows="%d(height)" cols="80">%h(z)</textarea>
  @ <p>
  @ <input type="submit" name="submit" value="Apply Changes">
  @ <input type="submit" name="clear" value="Revert To Default">
  @ <input type="submit" name="setup" value="Cancel">
  @ </p>
  @ </div></form>
  if ( zDfltValue ){
    @ <hr>
    @ <h2>Default %s(zTitle)</h2>
    @ <blockquote><pre>
    @ %h(zDfltValue)
    @ </pre></blockquote>
  }
  style_finish_page();
}

static const char *zDefaultXferCommon = 0;

/*
** WEBPAGE: xfersetup_com
** View or edit the TH1 script that runs prior to receiving a
** transfer.
*/
void xfersetup_com_page(void){
  static const char zDesc[] =
  @ Enter TH1 script that initializes variables prior to running
  @ any of the transfer request scripts.
  ;
  xfersetup_generic(
    "Transfer Common Script",
    "xfer-common-script",
    zDefaultXferCommon,
    zDesc,
    0,
    0,
    30
  );
}

static const char *zDefaultXferPush = 0;

/*
** WEBPAGE: xfersetup_push
** View or edit the TH1 script that runs after receiving a "push".
*/
void xfersetup_push_page(void){
  static const char zDesc[] =
  @ Enter TH1 script that runs after processing <strong>push</strong>
  @ transfer requests.
  ;
  xfersetup_generic(
    "Transfer Push Script",
    "xfer-push-script",
    zDefaultXferPush,
    zDesc,
    0,
    0,
    30
  );
}

static const char *zDefaultXferCommit = 0;

/*
** WEBPAGE: xfersetup_commit
** View or edit the TH1 script that runs when a transfer commit
** is processed.
*/
void xfersetup_commit_page(void){
  static const char zDesc[] =
  @ Enter TH1 script that runs when a commit is processed.
  ;
  xfersetup_generic(
    "Transfer Commit Script",
    "xfer-commit-script",
    zDefaultXferCommit,
    zDesc,
    0,
    0,
    30
  );
}

static const char *zDefaultXferTicket = 0;

/*
** WEBPAGE: xfersetup_ticket
** View or edit the TH1 script that runs when a ticket change artifact
** is processed during a transfer.
*/
void xfersetup_ticket_page(void){
  static const char zDesc[] =
  @ Enter TH1 script that runs when a ticket change is processed.
  ;
  xfersetup_generic(
    "Transfer Ticket Script",
    "xfer-ticket-script",
    zDefaultXferTicket,
    zDesc,
    0,
    0,
    30
  );
}
Changes to src/zip.c.
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**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to generate ZIP archives.
** This file contains code used to generate ZIP and SQLAR archives.
*/
#include "config.h"
#include <assert.h>
#include <zlib.h>
#include "config.h"
#include "zip.h"
#include "zip.h"

/*
** Type of archive to build.
*/
#define ARCHIVE_ZIP   0
#define ARCHIVE_SQLAR 1

/*
** Write a 16- or 32-bit integer as little-endian into the given buffer.
*/
static void put16(char *z, int v){
  z[0] = v & 0xff;
  z[1] = (v>>8) & 0xff;
}
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static int nEntry;   /* Number of files */
static int dosTime;  /* DOS-format time */
static int dosDate;  /* DOS-format date */
static int unixTime; /* Seconds since 1970 */
static int nDir;     /* Number of entries in azDir[] */
static char **azDir; /* Directory names already added to the archive */

typedef struct Archive Archive;
struct Archive {
  int eType;                      /* Type of archive (SQLAR or ZIP) */
  Blob *pBlob;                    /* Output blob */
  Blob tmp;                       /* Blob used as temp space for compression */
  sqlite3 *db;                    /* Db used to assemble sqlar archive */
  sqlite3_stmt *pInsert;          /* INSERT statement for SQLAR */
  sqlite3_vfs vfs;                /* VFS object */
};

/*
** Ensure that blob pBlob is at least nMin bytes in size.
*/
static void zip_blob_minsize(Blob *pBlob, int nMin){
  if( (int)blob_size(pBlob)<nMin ){
    blob_resize(pBlob, nMin);
  }
}

/*************************************************************************
** Implementation of "archive" VFS. A VFS designed to store the contents
** of a new database in a Blob. Used to construct sqlar archives in
** memory.
*/
typedef struct ArchiveFile ArchiveFile;
struct ArchiveFile {
  sqlite3_file base;              /* Base class */
  Blob *pBlob;
};

static int archiveClose(sqlite3_file *pFile){
  return SQLITE_OK;
}
static int archiveRead(
    sqlite3_file *pFile, void *pBuf, int iAmt, sqlite3_int64 iOfst
){
  assert( iOfst==0 || iOfst==24 );
  return SQLITE_IOERR_SHORT_READ;
}
static int archiveWrite(
    sqlite3_file *pFile, const void *pBuf, int iAmt, sqlite3_int64 iOfst
){
  ArchiveFile *pAF = (ArchiveFile*)pFile;
  int nMin = (int)iOfst + iAmt;
  char *aBlob;                    /* Output buffer */

  zip_blob_minsize(pAF->pBlob, nMin);
  aBlob = blob_buffer(pAF->pBlob);
  memcpy(&aBlob[iOfst], pBuf, iAmt);
  return SQLITE_OK;
}
static int archiveTruncate(sqlite3_file *pFile, sqlite3_int64 size){
  return SQLITE_OK;
}
static int archiveSync(sqlite3_file *pFile, int flags){
  return SQLITE_OK;
}
static int archiveFileSize(sqlite3_file *pFile, sqlite3_int64 *pSize){
  *pSize = 0;
  return SQLITE_OK;
}
static int archiveLock(sqlite3_file *pFile, int eLock){
  return SQLITE_OK;
}
static int archiveUnlock(sqlite3_file *pFile, int eLock){
  return SQLITE_OK;
}
static int archiveCheckReservedLock(sqlite3_file *pFile, int *pResOut){
  *pResOut = 0;
  return SQLITE_OK;
}
static int archiveFileControl(sqlite3_file *pFile, int op, void *pArg){
  if( op==SQLITE_FCNTL_SIZE_HINT ){
    ArchiveFile *pAF = (ArchiveFile*)pFile;
    zip_blob_minsize(pAF->pBlob, (int)(*(sqlite3_int64*)pArg));
  }
  return SQLITE_NOTFOUND;
}
static int archiveSectorSize(sqlite3_file *pFile){
  return 512;
}
static int archiveDeviceCharacteristics(sqlite3_file *pFile){
  return 0;
}

static int archiveOpen(
  sqlite3_vfs *pVfs, const char *zName,
  sqlite3_file *pFile, int flags, int *pOutFlags
){
  static struct sqlite3_io_methods methods = {
    1,             /* iVersion */
    archiveClose,
    archiveRead,
    archiveWrite,
    archiveTruncate,
    archiveSync,
    archiveFileSize,
    archiveLock,
    archiveUnlock,
    archiveCheckReservedLock,
    archiveFileControl,
    archiveSectorSize,
    archiveDeviceCharacteristics,
    0, 0, 0, 0,
    0, 0
  };

  ArchiveFile *pAF = (ArchiveFile*)pFile;
  assert( flags & SQLITE_OPEN_MAIN_DB );

  pAF->base.pMethods = &methods;
  pAF->pBlob = (Blob*)pVfs->pAppData;

  return SQLITE_OK;
}
static int archiveDelete(sqlite3_vfs *pVfs, const char *zName, int syncDir){
  return SQLITE_OK;
}
static int archiveAccess(
    sqlite3_vfs *pVfs, const char *zName, int flags, int *pResOut
){
  *pResOut = 0;
  return SQLITE_OK;
}
static int archiveFullPathname(
  sqlite3_vfs *pVfs, const char *zIn, int nOut, char *zOut
){
  int n = strlen(zIn);
  memcpy(zOut, zIn, n+1);
  return SQLITE_OK;
}
static int archiveRandomness(sqlite3_vfs *pVfs, int nByte, char *zOut){
  memset(zOut, 0, nByte);
  return SQLITE_OK;
}
static int archiveSleep(sqlite3_vfs *pVfs, int microseconds){
  return SQLITE_OK;
}
static int archiveCurrentTime(sqlite3_vfs *pVfs, double *prOut){
  return SQLITE_OK;
}
static int archiveGetLastError(sqlite3_vfs *pVfs, int nBuf, char *aBuf){
  return SQLITE_OK;
}
/*
** End of "archive" VFS.
*************************************************************************/

/*
** Initialize a new ZIP archive.
*/
void zip_open(void){
  blob_zero(&body);
  blob_zero(&toc);
  nEntry = 0;
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/*
** Set the date and time from a julian day number.
*/
void zip_set_timedate(double rDate){
  char *zDate = db_text(0, "SELECT datetime(%.17g)", rDate);
  zip_set_timedate_from_str(zDate);
  free(zDate);
  unixTime = (rDate - 2440587.5)*86400.0;
  fossil_free(zDate);
  unixTime = (int)((rDate - 2440587.5)*86400.0);
}

/*
** If the given filename includes one or more directory entries, make
** sure the directories are already in the archive.  If they are not
** in the archive, add them.
*/
void zip_add_folders(char *zName){
  int i, c;
  int j;
  for(i=0; zName[i]; i++){
    if( zName[i]=='/' ){
      c = zName[i+1];
      zName[i+1] = 0;
      for(j=0; j<nDir; j++){
        if( strcmp(zName, azDir[j])==0 ) break;
      }
      if( j>=nDir ){
        nDir++;
        azDir = realloc(azDir, sizeof(azDir[0])*nDir);
        azDir[j] = mprintf("%s", zName);
        zip_add_file(zName, 0);
      }
      zName[i+1] = c;
    }
  }
}

/*
** Append a single file to a growing ZIP archive.
**
** pFile is the file to be appended.  zName is the name
** that the file should be saved as.
*/
static void zip_add_file_to_zip(
  Archive *p,
void zip_add_file(const char *zName, const Blob *pFile){
  const char *zName,
  const Blob *pFile,
  int mPerm
){
  z_stream stream;
  int nameLen;
  int toOut = 0;
  int iStart;
  int iCRC = 0;
  unsigned long iCRC = 0;
  int nByte = 0;
  int nByteCompr = 0;
  int nBlob;                 /* Size of the blob */
  int iMethod;               /* Compression method. */
  int iMode = 0644;          /* Access permissions */
  char *z;
  char zHdr[30];
  char zExTime[13];
  char zBuf[100];
  char zOutBuf[100000];

  /* Fill in as much of the header as we know.
  */
  nameLen = (int)strlen(zName);
  if( nameLen==0 ) return;
  nBlob = pFile ? blob_size(pFile) : 0;
  if( nBlob>0 ){
    iMethod = 8;
    iMode = 0100644;
  }else{
  if( pFile ){ /* This is a file, possibly empty... */
    iMethod = (nBlob>0) ? 8 : 0; /* Cannot compress zero bytes. */
    switch( mPerm ){
      case PERM_LNK:   iMode = 0120755;   break;
      case PERM_EXE:   iMode = 0100755;   break;
      default:         iMode = 0100644;   break;
    }
  }else{       /* This is a directory, no blob... */
    iMethod = 0;
    iMode = 040755;
  }
  nameLen = strlen(zName);
  memset(zHdr, 0, sizeof(zHdr));
  put32(&zHdr[0], 0x04034b50);
  put16(&zHdr[4], 0x000a);
  put16(&zHdr[6], 0);
  put16(&zHdr[6], 0x0800);
  put16(&zHdr[8], iMethod);
  put16(&zHdr[10], dosTime);
  put16(&zHdr[12], dosDate);
  put16(&zHdr[26], nameLen);
  put16(&zHdr[28], 13);
  

  put16(&zExTime[0], 0x5455);
  put16(&zExTime[2], 9);
  zExTime[4] = 3;
  put32(&zExTime[5], unixTime);
  put32(&zExTime[9], unixTime);
  


  /* Write the header and filename.
  */
  iStart = blob_size(&body);
  blob_append(&body, zHdr, 30);
  blob_append(&body, zName, nameLen);
  blob_append(&body, zExTime, 13);
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      deflate(&stream, Z_FINISH);
      toOut = sizeof(zOutBuf) - stream.avail_out;
      blob_append(&body, zOutBuf, toOut);
    }while( stream.avail_out==0 );
    nByte = stream.total_in;
    nByteCompr = stream.total_out;
    deflateEnd(&stream);
  

    /* Go back and write the header, now that we know the compressed file size.
    */
    z = &blob_buffer(&body)[iStart];
    put32(&z[14], iCRC);
    put32(&z[18], nByteCompr);
    put32(&z[22], nByte);
  }
  

  /* Make an entry in the tables of contents
  */
  memset(zBuf, 0, sizeof(zBuf));
  put32(&zBuf[0], 0x02014b50);
  put16(&zBuf[4], 0x0317);
  put16(&zBuf[6], 0x000a);
  put16(&zBuf[8], 0);
  put16(&zBuf[8], 0x0800);
  put16(&zBuf[10], iMethod);
  put16(&zBuf[12], dosTime);
  put16(&zBuf[14], dosDate);
  put32(&zBuf[16], iCRC);
  put32(&zBuf[20], nByteCompr);
  put32(&zBuf[24], nByte);
  put16(&zBuf[28], nameLen);
  put16(&zBuf[30], 9);
  put16(&zBuf[32], 0);
  put16(&zBuf[34], 0);
  put16(&zBuf[36], 0);
  put32(&zBuf[38], ((unsigned)iMode)<<16);
  put32(&zBuf[42], iStart);
  blob_append(&toc, zBuf, 46);
  blob_append(&toc, zName, nameLen);
  put16(&zExTime[2], 5);
  blob_append(&toc, zExTime, 9);
  nEntry++;
}

static void zip_add_file_to_sqlar(
  Archive *p,
  const char *zName,
  const Blob *pFile,
  int mPerm
){
  int nName = (int)strlen(zName);

  if( p->db==0 ){
    assert( p->vfs.zName==0 );
    p->vfs.zName = (const char*)mprintf("archivevfs%p", (void*)p);
    p->vfs.iVersion = 1;
    p->vfs.szOsFile = sizeof(ArchiveFile);
    p->vfs.mxPathname = 512;
    p->vfs.pAppData = (void*)p->pBlob;
    p->vfs.xOpen = archiveOpen;
    p->vfs.xDelete = archiveDelete;
    p->vfs.xAccess = archiveAccess;
    p->vfs.xFullPathname = archiveFullPathname;
    p->vfs.xRandomness = archiveRandomness;
    p->vfs.xSleep = archiveSleep;
    p->vfs.xCurrentTime = archiveCurrentTime;
    p->vfs.xGetLastError = archiveGetLastError;
    sqlite3_vfs_register(&p->vfs, 0);
    sqlite3_open_v2("file:xyz.db", &p->db,
        SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE, p->vfs.zName
    );
    assert( p->db );
    blob_zero(&p->tmp);
    sqlite3_exec(p->db,
        "PRAGMA page_size=512;"
        "PRAGMA journal_mode = off;"
        "PRAGMA cache_spill = off;"
        "BEGIN;"
        "CREATE TABLE sqlar("
          "name TEXT PRIMARY KEY,  -- name of the file\n"
          "mode INT,               -- access permissions\n"
          "mtime INT,              -- last modification time\n"
          "sz INT,                 -- original file size\n"
          "data BLOB               -- compressed content\n"
        ");", 0, 0, 0
    );
    sqlite3_prepare(p->db,
        "INSERT INTO sqlar VALUES(?, ?, ?, ?, ?)", -1,
        &p->pInsert, 0
    );
    assert( p->pInsert );

    sqlite3_bind_int64(p->pInsert, 3, unixTime);
    blob_zero(p->pBlob);
  }

  if( nName==0 ) return;
  if( pFile==0 ){
    /* Directory. */
    if( zName[nName-1]=='/' ) nName--;
    sqlite3_bind_text(p->pInsert, 1, zName, nName, SQLITE_STATIC);
    sqlite3_bind_int(p->pInsert, 2, 040755);
    sqlite3_bind_int(p->pInsert, 4, 0);
    sqlite3_bind_null(p->pInsert, 5);
  }else{
    sqlite3_bind_text(p->pInsert, 1, zName, nName, SQLITE_STATIC);
    if( mPerm==PERM_LNK ){
      sqlite3_bind_int(p->pInsert, 2, 0120755);
      sqlite3_bind_int(p->pInsert, 4, -1);
      sqlite3_bind_text(p->pInsert, 5,
          blob_buffer(pFile), blob_size(pFile), SQLITE_STATIC
      );
    }else{
      unsigned int nIn = blob_size(pFile);
      unsigned long int nOut = nIn;
      sqlite3_bind_int(p->pInsert, 2, mPerm==PERM_EXE ? 0100755 : 0100644);
      sqlite3_bind_int(p->pInsert, 4, nIn);
      zip_blob_minsize(&p->tmp, nIn);
      compress( (unsigned char*)
          blob_buffer(&p->tmp), &nOut, (unsigned char*)blob_buffer(pFile), nIn
      );
      if( nOut>=(unsigned long)nIn ){
        sqlite3_bind_blob(p->pInsert, 5,
            blob_buffer(pFile), blob_size(pFile), SQLITE_STATIC
        );
      }else{
        sqlite3_bind_blob(p->pInsert, 5,
            blob_buffer(&p->tmp), nOut, SQLITE_STATIC
        );
      }
    }
  }

  sqlite3_step(p->pInsert);
  sqlite3_reset(p->pInsert);
}

static void zip_add_file(
  Archive *p,
  const char *zName,
  const Blob *pFile,
  int mPerm
){
  if( p->eType==ARCHIVE_ZIP ){
    zip_add_file_to_zip(p, zName, pFile, mPerm);
  }else{
    zip_add_file_to_sqlar(p, zName, pFile, mPerm);
  }
}

/*
** If the given filename includes one or more directory entries, make
** sure the directories are already in the archive.  If they are not
** in the archive, add them.
*/
static void zip_add_folders(Archive *p, char *zName){
  int i, c;
  int j;
  for(i=0; zName[i]; i++){
    if( zName[i]=='/' ){
      c = zName[i+1];
      zName[i+1] = 0;
      for(j=0; j<nDir; j++){
        if( fossil_strcmp(zName, azDir[j])==0 ) break;
      }
      if( j>=nDir ){
        nDir++;
        azDir = fossil_realloc(azDir, sizeof(azDir[0])*nDir);
        azDir[j] = mprintf("%s", zName);
        zip_add_file(p, zName, 0, 0);
      }
      zName[i+1] = c;
    }
  }
}

/*
** Free all the members of structure Archive allocated while processing
** an SQLAR request.
*/
static void free_archive(Archive *p){
  if( p->vfs.zName ){
    sqlite3_vfs_unregister(&p->vfs);
    fossil_free((char*)p->vfs.zName);
    p->vfs.zName = 0;
  }
  sqlite3_finalize(p->pInsert);
  p->pInsert = 0;
  sqlite3_close(p->db);
  p->db = 0;
}

/*
** Write the ZIP archive into the given BLOB.
*/
void zip_close(Blob *pZip){
static void zip_close(Archive *p){
  int iTocStart;
  int iTocEnd;
  int i;
  if( p->eType==ARCHIVE_ZIP ){
    int iTocStart;
    int iTocEnd;
  char zBuf[30];
    char zBuf[30];

  iTocStart = blob_size(&body);
  blob_append(&body, blob_buffer(&toc), blob_size(&toc));
  iTocEnd = blob_size(&body);
    iTocStart = blob_size(&body);
    blob_append(&body, blob_buffer(&toc), blob_size(&toc));
    iTocEnd = blob_size(&body);

  memset(zBuf, 0, sizeof(zBuf));
  put32(&zBuf[0], 0x06054b50);
  put16(&zBuf[4], 0);
  put16(&zBuf[6], 0);
  put16(&zBuf[8], nEntry);
  put16(&zBuf[10], nEntry);
  put32(&zBuf[12], iTocEnd - iTocStart);
  put32(&zBuf[16], iTocStart);
  put16(&zBuf[20], 0);
  blob_append(&body, zBuf, 22);
  blob_reset(&toc);
  *pZip = body;
  blob_zero(&body);
    memset(zBuf, 0, sizeof(zBuf));
    put32(&zBuf[0], 0x06054b50);
    put16(&zBuf[4], 0);
    put16(&zBuf[6], 0);
    put16(&zBuf[8], nEntry);
    put16(&zBuf[10], nEntry);
    put32(&zBuf[12], iTocEnd - iTocStart);
    put32(&zBuf[16], iTocStart);
    put16(&zBuf[20], 0);
    blob_append(&body, zBuf, 22);
    blob_reset(&toc);
    *(p->pBlob) = body;
    blob_zero(&body);
  }else{
    if( p->db ) sqlite3_exec(p->db, "COMMIT", 0, 0, 0);
    free_archive(p);
    blob_reset(&p->tmp);
  }

  nEntry = 0;
  for(i=0; i<nDir; i++){
    free(azDir[i]);
    fossil_free(azDir[i]);
  }
  free(azDir);
  fossil_free(azDir);
  nDir = 0;
  azDir = 0;
}

/*
** COMMAND: test-filezip
**
** Generate a ZIP archive specified by the first argument that
** contains files given in the second and subsequent arguments.
*/
void filezip_cmd(void){
  int i;
  Blob zip;
  Blob file;
  int eFType = SymFILE;
  Archive sArchive;
  memset(&sArchive, 0, sizeof(Archive));
  sArchive.eType = ARCHIVE_ZIP;
  sArchive.pBlob = &zip;
  if( g.argc<3 ){
    usage("ARCHIVE FILE....");
  }
  if( find_option("dereference","h",0)!=0 ){
    eFType = ExtFILE;
  }
  zip_open();
  for(i=3; i<g.argc; i++){
    blob_zero(&file);
    blob_read_from_file(&file, g.argv[i]);
    zip_add_file(g.argv[i], &file);
    blob_read_from_file(&file, g.argv[i], eFType);
    zip_add_file(&sArchive, g.argv[i], &file, file_perm(0,eFType));
    blob_reset(&file);
  }
  zip_close(&zip);
  zip_close(&sArchive);
  blob_write_to_file(&zip, g.argv[2]);
}

/*
** Given the RID for a manifest, construct a ZIP archive containing
** all files in the corresponding baseline.
**
** If RID is for an object that is not a real manifest, then the
** resulting ZIP archive contains a single file which is the RID
** object.
** object.  The pInclude and pExclude parameters are ignored in this case.
**
** If the RID object does not exist in the repository, then
** pZip is zeroed.
**
** zDir is a "synthetic" subdirectory which all zipped files get
** added to as part of the zip file. It may be 0 or an empty string,
** in which case it is ignored. The intention is to create a zip which
** politely expands into a subdir instead of filling your current dir
** with source files. For example, pass a UUID or "ProjectName".
** with source files. For example, pass a commit hash or "ProjectName".
**
*/
void zip_of_baseline(int rid, Blob *pZip, const char *zDir){
  int i;
  Blob mfile, file, hash;
  Manifest m;
static void zip_of_checkin(
  int eType,          /* Type of archive (ZIP or SQLAR) */
  int rid,            /* The RID of the check-in to build the archive from */
  Blob *pZip,         /* Write the archive content into this blob */
  const char *zDir,   /* Top-level directory of the archive */
  Glob *pInclude,     /* Only include files that match this pattern */
  Glob *pExclude,     /* Exclude files that match this pattern */
  int listFlag        /* Print each file on stdout */
){
  Blob mfile, hash, file;
  Manifest *pManifest;
  ManifestFile *pFile;
  Blob filename;
  int nPrefix;
  

  Archive sArchive;
  memset(&sArchive, 0, sizeof(Archive));
  sArchive.eType = eType;
  sArchive.pBlob = pZip;
  blob_zero(&sArchive.tmp);
  if( pZip ) blob_zero(pZip);

  content_get(rid, &mfile);
  if( blob_size(&mfile)==0 ){
    blob_zero(pZip);
    return;
  }
  blob_zero(&file);
  blob_zero(&hash);
  blob_set_dynamic(&hash, rid_to_uuid(rid));
  blob_copy(&file, &mfile);
  blob_zero(&filename);
  zip_open();
  if( pZip ) zip_open();

  if( zDir && zDir[0] ){
    blob_appendf(&filename, "%s/", zDir);
  }
  nPrefix = blob_size(&filename);

  pManifest = manifest_get(rid, CFTYPE_MANIFEST, 0);
  if( manifest_parse(&m, &mfile) ){
    char *zName;
    zip_set_timedate(m.rDate);
    blob_append(&filename, "manifest", -1);
    zName = blob_str(&filename);
    zip_add_folders(zName);
    zip_add_file(zName, &file);
  if( pManifest ){
    int flg, eflg = 0;
    char *zName = 0;
    zip_set_timedate(pManifest->rDate);
    flg = db_get_manifest_setting();
    if( flg ){
      /* eflg is the effective flags, taking include/exclude into account */
      if( (pInclude==0 || glob_match(pInclude, "manifest"))
       && !glob_match(pExclude, "manifest")
       && (flg & MFESTFLG_RAW) ){
        eflg |= MFESTFLG_RAW;
      }
      if( (pInclude==0 || glob_match(pInclude, "manifest.uuid"))
       && !glob_match(pExclude, "manifest.uuid")
       && (flg & MFESTFLG_UUID) ){
        eflg |= MFESTFLG_UUID;
      }
      if( (pInclude==0 || glob_match(pInclude, "manifest.tags"))
       && !glob_match(pExclude, "manifest.tags")
       && (flg & MFESTFLG_TAGS) ){
        eflg |= MFESTFLG_TAGS;
      }

      if( eflg & MFESTFLG_RAW ){
        blob_append(&filename, "manifest", -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
        if( pZip ){
          zip_add_folders(&sArchive, zName);
          zip_add_file(&sArchive, zName, &mfile, 0);
    sha1sum_blob(&file, &hash);
    blob_reset(&file);
    blob_append(&hash, "\n", 1);
    blob_resize(&filename, nPrefix);
    blob_append(&filename, "manifest.uuid", -1);
    zName = blob_str(&filename);
    zip_add_file(zName, &hash);
        }
      }
      if( eflg & MFESTFLG_UUID ){
        blob_append(&hash, "\n", 1);
        blob_resize(&filename, nPrefix);
        blob_append(&filename, "manifest.uuid", -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
    blob_reset(&hash);
    for(i=0; i<m.nFile; i++){
      int fid = uuid_to_rid(m.aFile[i].zUuid, 0);
      if( fid ){
        if( pZip ){
        content_get(fid, &file);
        blob_resize(&filename, nPrefix);
        blob_append(&filename, m.aFile[i].zName, -1);
        zName = blob_str(&filename);
        zip_add_folders(zName);
        zip_add_file(zName, &file);
          zip_add_folders(&sArchive, zName);
          zip_add_file(&sArchive, zName, &hash, 0);
        blob_reset(&file);
        }
      }
      if( eflg & MFESTFLG_TAGS ){
        blob_resize(&filename, nPrefix);
        blob_append(&filename, "manifest.tags", -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
        if( pZip ){
          Blob tagslist;
          blob_zero(&tagslist);
          get_checkin_taglist(rid, &tagslist);
          zip_add_folders(&sArchive, zName);
          zip_add_file(&sArchive, zName, &tagslist, 0);
          blob_reset(&tagslist);
    }
    manifest_clear(&m);
        }
      }
    }
    manifest_file_rewind(pManifest);
  }else{
    blob_reset(&mfile);
    blob_reset(&file);
  }
    if( pZip ) zip_add_file(&sArchive, "", 0, 0);
    while( (pFile = manifest_file_next(pManifest,0))!=0 ){
      int fid;
      if( pInclude!=0 && !glob_match(pInclude, pFile->zName) ) continue;
      if( glob_match(pExclude, pFile->zName) ) continue;
      fid = uuid_to_rid(pFile->zUuid, 0);
      if( fid ){
        blob_resize(&filename, nPrefix);
        blob_append(&filename, pFile->zName, -1);
        zName = blob_str(&filename);
        if( listFlag ) fossil_print("%s\n", zName);
        if( pZip ){
          content_get(fid, &file);
          zip_add_folders(&sArchive, zName);
          zip_add_file(&sArchive, zName, &file, manifest_file_mperm(pFile));
          blob_reset(&file);
        }
      }
    }
  }
  blob_reset(&mfile);
  manifest_destroy(pManifest);
  blob_reset(&filename);
  blob_reset(&hash);
  if( pZip ){
  zip_close(pZip);
    zip_close(&sArchive);
  }
}

/*
** COMMAND: zip
** Implementation of zip_cmd and sqlar_cmd.
**
** Usage: %fossil zip VERSION OUTPUTFILE [--name DIRECTORYNAME]
**
** Generate a ZIP archive for a specified version.  If the --name option is
** used, it argument becomes the name of the top-level directory in the
** resulting ZIP archive.  If --name is omitted, the top-level directory
** named is derived from the project name, the check-in date and time, and
** the artifact ID of the check-in.
*/
void baseline_zip_cmd(void){
static void archive_cmd(int eType){
  int rid;
  Blob zip;
  const char *zName;
  Glob *pInclude = 0;
  Glob *pExclude = 0;
  const char *zInclude;
  const char *zExclude;
  int listFlag = 0;
  const char *zOut;

  zName = find_option("name", 0, 1);
  zExclude = find_option("exclude", "X", 1);
  if( zExclude ) pExclude = glob_create(zExclude);
  zInclude = find_option("include", 0, 1);
  if( zInclude ) pInclude = glob_create(zInclude);
  listFlag = find_option("list","l",0)!=0;
  db_find_and_open_repository(1);
  db_find_and_open_repository(0, 0);

  /* We should be done with options.. */
  verify_all_options();

  if( g.argc!=4 ){
    usage("VERSION OUTPUTFILE");
  }
  g.zOpenRevision = g.argv[2];
  rid = name_to_rid(g.argv[2]);
  rid = name_to_typed_rid(g.argv[2], "ci");
  if( rid==0 ){
    fossil_fatal("Check-in not found: %s", g.argv[2]);
    return;
  }
  zOut = g.argv[3];
  if( fossil_strcmp(zOut,"")==0 || fossil_strcmp(zOut,"/dev/null")==0 ){
    zOut = 0;
  }

  if( zName==0 ){
    zName = db_text("default-name",
       "SELECT replace(%Q,' ','_') "
          " || strftime('_%%Y-%%m-%%d_%%H%%M%%S_', event.mtime) "
          " || substr(blob.uuid, 1, 10)"
       "  FROM event, blob"
       " WHERE event.objid=%d"
       "   AND blob.rid=%d",
       db_get("project-name", "unnamed"), rid, rid
    );
  }
  zip_of_baseline(rid, &zip, zName);
  blob_write_to_file(&zip, g.argv[3]);
}

  zip_of_checkin(eType, rid, zOut ? &zip : 0,
                 zName, pInclude, pExclude, listFlag);
  glob_free(pInclude);
  glob_free(pExclude);
  if( zOut ){
    blob_write_to_file(&zip, zOut);
    blob_reset(&zip);
  }
}

/*
** COMMAND: zip*
**
** Usage: %fossil zip VERSION OUTPUTFILE [OPTIONS]
**
** Generate a ZIP archive for a check-in.  If the --name option is
** used, its argument becomes the name of the top-level directory in the
** resulting ZIP archive.  If --name is omitted, the top-level directory
** name is derived from the project name, the check-in date and time, and
** the artifact ID of the check-in.
**
** The GLOBLIST argument to --exclude and --include can be a comma-separated
** list of glob patterns, where each glob pattern may optionally be enclosed
** in "..." or '...' so that it may contain commas.  If a file matches both
** --include and --exclude then it is excluded.
**
** If OUTPUTFILE is an empty string or "/dev/null" then no ZIP archive is
** actually generated.  This feature can be used in combination with
** the --list option to get a list of the filenames that would be in the
** ZIP archive had it actually been generated.
**
** Options:
**   -X|--exclude GLOBLIST   Comma-separated list of GLOBs of files to exclude
**   --include GLOBLIST      Comma-separated list of GLOBs of files to include
**   -l|--list               Show archive content on stdout
**   --name DIRECTORYNAME    The name of the top-level directory in the archive
**   -R REPOSITORY           Specify a Fossil repository
*/
void zip_cmd(void){
  archive_cmd(ARCHIVE_ZIP);
}

/*
** COMMAND: sqlar*
**
** Usage: %fossil sqlar VERSION OUTPUTFILE [OPTIONS]
**
** Generate an SQLAR archive for a check-in.  If the --name option is
** used, its argument becomes the name of the top-level directory in the
** resulting SQLAR archive.  If --name is omitted, the top-level directory
** name is derived from the project name, the check-in date and time, and
** the artifact ID of the check-in.
**
** The GLOBLIST argument to --exclude and --include can be a comma-separated
** list of glob patterns, where each glob pattern may optionally be enclosed
** in "..." or '...' so that it may contain commas.  If a file matches both
** --include and --exclude then it is excluded.
**
** If OUTPUTFILE is an empty string or "/dev/null" then no SQLAR archive is
** actually generated.  This feature can be used in combination with
** the --list option to get a list of the filenames that would be in the
** SQLAR archive had it actually been generated.
**
** Options:
**   -X|--exclude GLOBLIST   Comma-separated list of GLOBs of files to exclude
**   --include GLOBLIST      Comma-separated list of GLOBs of files to include
**   -l|--list               Show archive content on stdout
**   --name DIRECTORYNAME    The name of the top-level directory in the archive
**   -R REPOSITORY           Specify a Fossil repository
*/
void sqlar_cmd(void){
  archive_cmd(ARCHIVE_SQLAR);
}

/*
** WEBPAGE: sqlar
** WEBPAGE: zip
**
** URL: /zip/RID.zip
** URLs:
**
**     /zip/[VERSION/]NAME.zip
**     /sqlar/[VERSION/]NAME.sqlar
**
** Generate a ZIP archive for the baseline.
** Return that ZIP archive as the HTTP reply content.
** Generate a ZIP Archive or an SQL Archive for the check-in specified by
** VERSION.  The archive is called NAME.zip or NAME.sqlar and has a top-level
** directory called NAME.
**
** The optional VERSION element defaults to "trunk" per the r= rules below.
** All of the following URLs are equivalent:
**
**      /zip/release/xyz.zip
**      /zip?r=release&name=xyz.zip
**      /zip/xyz.zip?r=release
**      /zip?name=release/xyz.zip
**
** Query parameters:
**
**   name=[CKIN/]NAME    The optional CKIN component of the name= parameter
**                       identifies the check-in from which the archive is
**                       constructed.  If CKIN is omitted and there is no
**                       r= query parameter, then use "trunk".  NAME is the
**                       name of the download file.  The top-level directory
**                       in the generated archive is called by NAME with the
**                       file extension removed.
**
**   r=TAG               TAG identifies the check-in that is turned into an
**                       SQL or ZIP archive.  The default value is "trunk".
**                       If r= is omitted and if the name= query parameter
**                       contains one "/" character then the of part the
**                       name= value before the / becomes the TAG and the
**                       part of the name= value  after the / is the download
**                       filename.  If no check-in is specified by either
**                       name= or r=, then "trunk" is used.
**
**   in=PATTERN          Only include files that match the comma-separate
**                       list of GLOB patterns in PATTERN, as with ex=
**
**   ex=PATTERN          Omit any file that match PATTERN.  PATTERN is a
**                       comma-separated list of GLOB patterns, where each
**                       pattern can optionally be quoted using ".." or '..'.
**                       Any file matching both ex= and in= is excluded.
*/
void baseline_zip_page(void){
  int rid;
  const char *z;
  char *zName, *zRid;
  char *zName, *zRid, *zKey;
  int nName, nRid;
  const char *zInclude;         /* The in= query parameter */
  const char *zExclude;         /* The ex= query parameter */
  Blob cacheKey;                /* The key to cache */
  Glob *pInclude = 0;           /* The compiled in= glob pattern */
  Glob *pExclude = 0;           /* The compiled ex= glob pattern */
  Blob zip;
  Blob zip;                     /* ZIP archive accumulated here */
  int eType = ARCHIVE_ZIP;      /* Type of archive to generate */
  char *zType;                  /* Human-readable archive type */

  login_check_credentials();
  if( !g.okZip ){ login_needed(); return; }
  zName = mprintf("%s", PD("name",""));
  if( !g.perm.Zip ){ login_needed(g.anon.Zip); return; }
  if( fossil_strcmp(g.zPath, "sqlar")==0 ){
    eType = ARCHIVE_SQLAR;
    zType = "SQL";
  }else{
    eType = ARCHIVE_ZIP;
    zType = "ZIP";
  }
  fossil_nice_default();
  zName = fossil_strdup(PD("name",""));
  z = P("r");
  if( z==0 ) z = P("uuid");
  if( z==0 ) z = tar_uuid_from_name(&zName);
  if( z==0 ) z = "trunk";
  nName = strlen(zName);
  zRid = mprintf("%s", PD("uuid",""));
  g.zOpenRevision = zRid = fossil_strdup(z);
  nRid = strlen(zRid);
  zInclude = P("in");
  if( zInclude ) pInclude = glob_create(zInclude);
  zExclude = P("ex");
  if( zExclude ) pExclude = glob_create(zExclude);
  if( zInclude==0 && zExclude==0 ){
    etag_check_for_invariant_name(z);
  }
  if( eType==ARCHIVE_ZIP
   && nName>4
   && fossil_strcmp(&zName[nName-4], ".zip")==0
  ){
    /* Special case:  Remove the ".zip" suffix.  */
    nName -= 4;
    zName[nName] = 0;
  }else if( eType==ARCHIVE_SQLAR
   && nName>6
   && fossil_strcmp(&zName[nName-6], ".sqlar")==0
  ){
    /* Special case:  Remove the ".sqlar" suffix.  */
    nName -= 6;
    zName[nName] = 0;
  }else{
    /* If the file suffix is not ".zip" or ".sqlar" then just remove the
    ** suffix up to and including the last "." */
  for(nName=strlen(zName)-1; nName>5; nName--){
    if( zName[nName]=='.' ){
      zName[nName] = 0;
      break;
    }
  }
  rid = name_to_rid(nRid?zRid:zName);
  if( rid==0 ){
    for(nName=strlen(zName)-1; nName>5; nName--){
      if( zName[nName]=='.' ){
        zName[nName] = 0;
        break;
      }
    }
  }
  rid = symbolic_name_to_rid(nRid?zRid:zName, "ci");
  if( rid<=0 ){
    cgi_set_status(404, "Not Found");
    @ Not found
    return;
  }
  if( nRid==0 && nName>10 ) zName[10] = 0;
  zip_of_baseline(rid, &zip, zName);
  free( zName );
  free( zRid );

  /* Compute a unique key for the cache entry based on query parameters */
  blob_init(&cacheKey, 0, 0);
  blob_appendf(&cacheKey, "/%s/%z", g.zPath, rid_to_uuid(rid));
  blob_appendf(&cacheKey, "/%q", zName);
  if( zInclude ) blob_appendf(&cacheKey, ",in=%Q", zInclude);
  if( zExclude ) blob_appendf(&cacheKey, ",ex=%Q", zExclude);
  zKey = blob_str(&cacheKey);
  etag_check(ETAG_HASH, zKey);

  style_set_current_feature("zip");
  if( P("debug")!=0 ){
    style_header("%s Archive Generator Debug Screen", zType);
    @ zName = "%h(zName)"<br>
    @ rid = %d(rid)<br>
    if( zInclude ){
      @ zInclude = "%h(zInclude)"<br>
    }
    if( zExclude ){
      @ zExclude = "%h(zExclude)"<br>
    }
    @ zKey = "%h(zKey)"
    style_finish_page();
    return;
  }
  if( referred_from_login() ){
    style_header("%s Archive Download", zType);
    @ <form action='%R/%s(g.zPath)/%h(zName).%s(g.zPath)'>
    cgi_query_parameters_to_hidden();
    @ <p>%s(zType) Archive named <b>%h(zName).%s(g.zPath)</b>
    @ holding the content of check-in <b>%h(zRid)</b>:
    @ <input type="submit" value="Download">
    @ </form>
    style_finish_page();
    return;
  }
  cgi_check_for_malice();
  blob_zero(&zip);
  if( cache_read(&zip, zKey)==0 ){
    zip_of_checkin(eType, rid, &zip, zName, pInclude, pExclude, 0);
    cache_write(&zip, zKey);
  }
  glob_free(pInclude);
  glob_free(pExclude);
  fossil_free(zName);
  fossil_free(zRid);
  g.zOpenRevision = 0;
  blob_reset(&cacheKey);
  cgi_set_content(&zip);
  if( eType==ARCHIVE_ZIP ){
  cgi_set_content_type("application/zip");
}
    cgi_set_content_type("application/zip");
  }else{
    cgi_set_content_type("application/sqlar");
  }
}
Added test/Greek-Lipsum-1.txt.













































































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Κυο εξ υνυμ δισπυθανδο, εÏος αλιενυμ κυι θε. Îες εξ ελωκυενθιαμ
ινστÏυσθιοÏ. Î˜ÎµÎ¼Ï€Î¿Ï Î½Î¿ÏƒÎ¸ÎµÏ ÏƒÏ… εως. ΠυÏθο μωφεθ μωδεÏατιυς ατ μελ. Συ δυο
αμετ ειυς. ΠÏι δεσωÏε ινθεγÏε ασυμσαν αδ, Ï€Ïω αν Ïεβυμ εφφισιανθυÏ
νεσεσιταθιβυς.

ÎοσθÏυμ ÏƒÏ…ÏƒÎ¹Ï€Î¹Î±Î½Ï„Ï…Ï Î·Î±Ï‚ ει, οÏναθυς Ïεσυσαβο Ï€Ïι ιδ, Ï€ÎµÏ Î½Î¿Î»Ï…Î¹ÏƒÎµ οπωÏθεÏε
ιδ. Θε παÏτιενδω πεÏτινασια ινσωÏÏυπτε φις. Δισθας φαβυλας γυβεÏγÏεν εως
ιν, αλιι σολυμ ηις θε, ποσθυλανθ ασυσαμυς ετ ηας. Îο ινανι φαβυλας
θχεωπηÏαστυς ναμ, ευμ διστα ηομεÏω εα. Μαγνα φυγιθ υθ πεÏ, εσθ ατ νοσθÏυμ
δεσεÏυισε.

Φις αυδιαμ λαβοÏες παθÏιοκυε εξ, ετ φευγιαθ δεφινιεβας σιθ. Αμετ εÏιπυιτ
δελισατα υσυ ετ, σενσιβυς φολυπθατιβυς Ï€ÎµÏ ÎµÎ¾. Κυωδ ιγνωθα τιβικυε ατ εαμ,
νυλλα ηωνεσθαθις υθ νες. Φιξ αν μυτατ εξεÏσι λαβωÏε. Σεδ νονυμυ κυοδσι
δελενιτ νε, συμο φιδε εα κυι. Ποπυλω μαιοÏυμ πεÏσεκυεÏις αν Ï€Ïω.

Σολυμ σωνφενιÏε αδ ηας, αν ευμ σολυτα Ïεγιονε Ï€Ïοδεσεθ. ΦεÏο λαβοÏες
σαλυταθυς θε δυο, ηις νε φεÏο βλανδιτ Ï€Ïαεσενθ, ιδ φις σολεατ φιφενδυμ. Συ
συμ μωδω συμμο δολοÏες. Θε ναμ πωσιθ φευγιαθ τινσιδυνθ.

Υθ ιψυμ νεμωÏε σαπιενθεμ μεα, ει εφεÏτι εφφισιενδι ηας. Ευμ αλβυσιυς
Ï€Ïαεσενθ συ, δεσωÏε σεθεÏο ινδοστυμ μει ει. Ηις υθ συμμο μαλοÏυμ μανδαμυς,
κυι ιν συαφιθαθε πεÏισυλις, ιισκυε οφφισιις κυο νο. Îε νονυμυ ηαβεμυς
πχιλωσοπηια φις. Ετ ηας Ï…Ï„Î±Î¼Ï…Ï ÏεφοÏμιδανς. ΙνεÏμις δεθÏαξιθ νεγλεγενθυÏ
δυο υθ, τωÏκυαθος δισεντιυνθ φιθυπεÏατοÏιβυς φιξ νε. Εα σεδ συας μελιυς,
φιμ Ï€Ïοβο ινδοστυμ ÏεπÏιμικυε ευ.

ΠÏι ιν λυδυς αυδιÏε, συμμο πεÏτινασια ÏƒÏ‰Î½ÏƒÎµÎ¸ÎµÎ¸Ï…Ï Ï†Î¹Ï‚ ιν, σιθ εξ επισυÏι
μαλυισετ σωνσεπθαμ. Αν δετÏασθο ελειφενδ εξπλισαÏι Ï€Ïω. Ιυδισο σομμοδο συμ
αδ. Δισαμ δισυντ φυλπυτατε ιν Ï€Ïω, εξ ηις δελενιτ μαιεσθατις. Ρεβυμ νονυμυ
αππαÏεατ σιθ εα, σιθ ιδ νυλλα σολεατ πεθενθιυμ, ει οπθιων πεÏσεκυεÏις ευμ.
Υθ νισλ ινσωλενς φιξ, εσθ φεÏι ιισκυε αÏγυμενθυμ συ, σεθεÏο μολεστιε
αδιπισινγ ευ μεα.

Ετ μεα μυσιυς λατινε, μει ÏƒÎµÎ¼Ï€ÎµÏ Î´ÎµÏƒÎµÏυντ πεÏτινασια αν. Συ φενιαμ ποπυλω
αθωμωÏυμ κυο. Îο ιυς Ïεβυμ φιθυπεÏαθα δισπυτατιονι, ατ αλθεÏυμ χενδÏεÏιτ
φιθυπεÏαθα συμ. Ευμ αυτεμ αππετεÏε αδιπισινγ ετ, νο κυο συας ελειφενδ. Εαμ
θαλε δισαμ εξ.

Ετ σομμοδο λεγενδως φελ, διαμ φωλυπθαÏια νο μελ, δυο φελιτ νεμωÏε αδ. Αν
εξπετενδα συαφιθαθε φελ, ενιμ ασυμσαν Ï€ÎµÏ Î±Î´, εα φιμ μωδω υνυμ. Εα κυωδ
Ï€Ïοβο πεÏσεσυτι φελ, ευ φεÏι Ï€ÏωπÏιαε ινσιδεÏιντ νες. Εξ νες οδιο δελενιτ,
ελιτ ιυδισο ινθεγÏε δυο ιδ. Μελ αλικυιπ πεÏισυλις ετ, ατ ηας αυγυε λαβοÏες
ασεντιοÏ.

Συ νυλλα δωσενδι δεφινιτιωνες φελ. ΔωλοÏε δισεÏετ ÏεφοÏμιδανς αδ Ï€Ïω.
ΕφεÏτι Ï€Ïωβατυς Ï…Ïβανιθας νο μελ. Ιν φιξ φασεθε δεθÏαξιθ ομιθταντυÏ, ζÏιλ
υτιναμ παθÏιοκυε συ νες. Κυο ει δισενθιετ ασομμοδαÏε.

Ηας θε ομνεσκυε δελισαθισιμι. ΕξεÏσι δελισατα ινιμισυς ευμ ευ, ιδ ελιτÏ
μελιοÏε αβχοÏÏεανθ εσθ, εως οπθιων Ï€Ïοδεσεθ ÏƒÎ¿Î½ÏƒÎµÏƒÎ¸ÎµÎ¸Ï…ÎµÏ Î¹Î½. Îαμ διαμ ασυμ
τεμποÏιβυς αν. Σομμυνε δεφινιθιονεμ κυο ιν, ηας νωμιναφι φιφενδυμ ατ.
Ομνεσκυε δεφινιεβας μεα θε.

Εαμ σανστυς αλβυσιυς ευ, φελ στετ επισυÏι ιν, κυο αδ πεÏτιναξ σενσεÏιτ
τωÏκυαθος. ΛαβωÏε νυσκυαμ ιν κυι, εÏος σαεπε τιβικυε εσθ ατ. ΦεÏο υτιναμ
φελ νε, αδ απεÏιÏι Î¿Î¼Î¹Î¸Ï„Î±Î½Ï„Ï…Ï Î´ÎµÏ†Î¹Î½Î¹Ï„Î¹Ï‰Î½ÎµÏ‚ δυο. ΙνφενιÏε ελειφενδ παθÏιοκυε
εξ ναμ. Ιδ ναμ μινιμ υθÏοκυε. Αδ ναθυμ αππετεÏε σεα.

Μολλις φολυμυς κυι νο, θε φιμ υβικυε αδιπισι διγνισιμ. Îοβις νοσθÏω
μενανδÏι υσυ νο, Ï€Ïιμα ÎµÎ»Î¹Ï„Ï ÎºÏ…Î±ÎµÎºÏ…Îµ ιδ ηας. ΠÏω εα παÏτεμ δομινγ. Θε
φασεθε αυδιÏε φολυπθατιβυς ιυς. Φις δεθÏαξιθ ινφενιÏε ετ, αν ιυς πωσθεα
μεδιοσÏιθαθεμ.

Εα αδχυς Ï…Ï„Î±Î¼Ï…Ï Ï†Î¹Ï‚. Σιβω λαυδεμ υσυ αδ, φις λεγιμυς πλασεÏαθ φεÏθεÏεμ συ.
Φιμ ατ ειυς αλθεÏυμ φιθυπεÏατοÏιβυς, ατ λατινε ηαβεμυς φολυτπατ μεα. ΓÏαεσω
λυσιλιυς εα φελ.

Θε φιξ βÏυτε συμμο, φελ ωμιτθαμ ιμπεÏδιετ εξ. Μεα ιν μωδω νυμκυαμ, σεα
Ï„Ïασθατος εξπετενδα αδ. ΓÏαεσε πλαθονεμ Ïεπυδιανδαε φιξ εα, εα ετιαμ
σωνσθιτυθο ασυεφεÏιθ σιθ. Ατ πυÏθο ναθυμ σονγυε φιξ, κυι ετ δισαμ ινεÏμις
ινιμισυς.

Î ÎµÏ Ï…Î¸ διστα ινθεγÏε, Ï€ÎµÏ Ïεκυε φιεÏενθ αδ. Îε δεσεÏυντ ινφενιÏε σωνσεθεθυÏ
μει, αν ηομεÏω αÏγυμενθυμ Ïεπυδιανδαε πεÏ, ηις σωνσυλ μελιοÏε ινθελλεγαμ
υθ. Îες εα Î»Î±Î²Î¹Î¸Ï…Ï Î´Î¿Î»Î¿Ïεμ υλλαμσοÏπεÏ. Μει εσεντ νεσεσιταθιβυς ιν, αφφεÏθ
σαυσαε ινθεÏεσετ ηας αν.
Added test/Greek-Lipsum-2.txt.













































































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Κυο εξ υνυμ δισπυθανδο, εÏος αλιενυμ κυι θε. Îες εξ ελωκυενθιαμ
ινστÏυσθιοÏ. Î˜ÎµÎ¼Ï€Î¿Ï Î½Î¿ÏƒÎ¸ÎµÏ ÏƒÏ… εως. ΠυÏθο μωφεθ μωδεÏατιυς ατ μελ. Συ δυο
αμετ ειυς. ΠÏι δεσωÏε ινθεγÏε ασυμσαν αδ, Φιξ αν Ïεβυμ εφφισιανθυÏ
νεσεσιταθιβυς.

ÎοσθÏυμ ÏƒÏ…ÏƒÎ¹Ï€Î¹Î±Î½Ï„Ï…Ï Î·Î±Ï‚ ει, οÏναθυς Ïεσυσαβο Ï€Ïι ιδ, Ï€ÎµÏ Î½Î¿Î»Ï…Î¹ÏƒÎµ
οπωÏθεÏε ιδ. Θε παÏτιενδω πεÏτινασια ινσωÏÏυπτε φις. Δισθας φαβυλας
γυβεÏγÏεν εως ιν, αλιι σολυμ ηις θε, ποσθυλανθ ασυσαμυς ετ ηας. Îο ινανι
φαβυλας θχεωπηÏαστυς ναμ, ευμ διστα ηομεÏω εα. Μαγνα φυγιθ υθ πεÏ, εσθ
ατ νοσθÏυμ δεσεÏυισε.

Φις αυδιαμ λαβοÏες παθÏιοκυε εξ, ετ φευγιαθ δεφινιεβας σιθ. Αμετ εÏιπυιτ
δελισατα υσυ ετ, σενσιβυς φολυπθατιβυς Ï€ÎµÏ ÎµÎ¾. Κυωδ ιγνωθα τιβικυε ατ
εαμ, νυλλα ηωνεσθαθις υθ νες. Φιξ αν μυτατ εξεÏσι λαβωÏε. Σεδ νονυμυ
κυοδσι δελενιτ νε, συμο φιδε εα κυι. Ποπυλω μαιοÏυμ πεÏσεκυεÏις αν Ï€Ïω.

Σολυμ σωνφενιÏε αδ ηας, αν ευμ σολυτα Ïεγιονε Ï€Ïοδεσεθ. ΦεÏο λαβοÏες
σαλυταθυς θε δυο, ηις νε φεÏο βλανδιτ Ï€Ïαεσενθ, ιδ φις σολεατ φιφενδυμ.
Συ συμ μωδω συμμο δολοÏες. Θε ναμ πωσιθ φευγιαθ τινσιδυνθ.

Υθ ιψυμ νεμωÏε σαπιενθεμ μεα, ει εφεÏτι εφφισιενδι ηας. Ευμ αλβυσιυς
Ï€Ïαεσενθ συ, δεσωÏε σεθεÏο ινδοστυμ μει ει. Ηις υθ συμμο μαλοÏυμ
μανδαμυς, κυι ιν συαφιθαθε πεÏισυλις, ιισκυε οφφισιις κυο νο. Îε νονυμυ
ηαβεμυς πχιλωσοπηια φις. Ετ ηας Ï…Ï„Î±Î¼Ï…Ï ÏεφοÏμιδανς. ΙνεÏμις δεθÏαξιθ
Î½ÎµÎ³Î»ÎµÎ³ÎµÎ½Î¸Ï…Ï Î´Ï…Î¿ υθ, τωÏκυαθος δισεντιυνθ φιθυπεÏατοÏιβυς φιξ νε. Εα σεδ
συας μελιυς, φιμ Ï€Ïοβο ινδοστυμ ÏεπÏιμικυε ευ.

ΠÏι ιν λυδυς αυδιÏε, συμμο πεÏτινασια ÏƒÏ‰Î½ÏƒÎµÎ¸ÎµÎ¸Ï…Ï Ï†Î¹Ï‚ ιν, σιθ εξ επισυÏι
μαλυισετ σωνσεπθαμ. Αν δετÏασθο ελειφενδ εξπλισαÏι Ï€Ïω. Ιυδισο σομμοδο
συμ αδ. Δισαμ δισυντ φυλπυτατε ιν Ï€Ïω, εξ ηις δελενιτ μαιεσθατις. Ρεβυμ
νονυμυ αππαÏεατ σιθ εα, σιθ ιδ νυλλα σολεατ πεθενθιυμ, ει οπθιων
πεÏσεκυεÏις ευμ.  Υθ νισλ ινσωλενς φιξ, εσθ φεÏι ιισκυε αÏγυμενθυμ συ,
σεθεÏο μολεστιε αδιπισινγ ευ μεα.

Ετ μεα μυσιυς λατινε, μει ÏƒÎµÎ¼Ï€ÎµÏ Î´ÎµÏƒÎµÏυντ πεÏτινασια αν. Συ φενιαμ
ποπυλω αθωμωÏυμ κυο. Îο ιυς Ïεβυμ φιθυπεÏαθα δισπυτατιονι, ατ αλθεÏυμ
χενδÏεÏιτ φιθυπεÏαθα συμ. Ευμ αυτεμ αππετεÏε αδιπισινγ ετ, νο κυο συας
ελειφενδ. Εαμ θαλε δισαμ εξ.

Ετ σομμοδο λεγενδως φελ, διαμ φωλυπθαÏια νο μελ, δυο φελιτ νεμωÏε αδ. Αν
εξπετενδα συαφιθαθε φελ, ενιμ ασυμσαν Ï€ÎµÏ Î±Î´, εα φιμ μωδω υνυμ. Εα κυωδ
Ï€Ïοβο πεÏσεσυτι φελ, ευ φεÏι Ï€ÏωπÏιαε ινσιδεÏιντ νες. Εξ νες οδιο
δελενιτ, ελιτ ιυδισο ινθεγÏε δυο ιδ. Μελ αλικυιπ πεÏισυλις ετ, ατ ηας
αυγυε λαβοÏες ασεντιοÏ.

Συ νυλλα δωσενδι δεφινιτιωνες φελ. ΔωλοÏε δισεÏετ ÏεφοÏμιδανς αδ Ï€Ïω.
ΕφεÏτι Ï€Ïωβατυς Ï…Ïβανιθας νο μελ. Ιν φιξ φασεθε δεθÏαξιθ ομιθταντυÏ,
ζÏιλ υτιναμ παθÏιοκυε συ νες. Κυο ει δισενθιετ ασομμοδαÏε.

Ηας θε ομνεσκυε δελισαθισιμι. ΕξεÏσι δελισατα ινιμισυς ευμ ευ, ιδ ελιτÏ
μελιοÏε αβχοÏÏεανθ εσθ, εως οπθιων Ï€Ïοδεσεθ ÏƒÎ¿Î½ÏƒÎµÏƒÎ¸ÎµÎ¸Ï…ÎµÏ Î¹Î½. Îαμ διαμ
ασυμ τεμποÏιβυς αν. Σομμυνε δεφινιθιονεμ κυο ιν, ηας νωμιναφι φιφενδυμ
ατ.  Ομνεσκυε δεφινιεβας μεα θε.

Εαμ σανστυς αλβυσιυς ευ, φελ στετ επισυÏι ιν, κυο αδ πεÏτιναξ σενσεÏιτ
τωÏκυαθος. ΛαβωÏε νυσκυαμ ιν κυι, εÏος σαεπε τιβικυε εσθ ατ. ΦεÏο υτιναμ
φελ νε, αδ απεÏιÏι Î¿Î¼Î¹Î¸Ï„Î±Î½Ï„Ï…Ï Î´ÎµÏ†Î¹Î½Î¹Ï„Î¹Ï‰Î½ÎµÏ‚ δυο. ΙνφενιÏε ελειφενδ
παθÏιοκυε εξ ναμ. Ιδ ναμ μινιμ υθÏοκυε. Αδ ναθυμ αππετεÏε σεα.

Μολλις φολυμυς κυι νο, θε φιμ υβικυε αδιπισι διγνισιμ. Îοβις νοσθÏω
μενανδÏι υσυ νο, Ï€Ïιμα ÎµÎ»Î¹Ï„Ï ÎºÏ…Î±ÎµÎºÏ…Îµ ιδ ηας. ΠÏω εα παÏτεμ δομινγ. Θε
φασεθε αυδιÏε φολυπθατιβυς ιυς. Φις δεθÏαξιθ ινφενιÏε ετ, αν ιυς πωσθεα
μεδιοσÏιθαθεμ.

Εα αδχυς Ï…Ï„Î±Î¼Ï…Ï Ï†Î¹Ï‚. Σιβω λαυδεμ υσυ αδ, φις λεγιμυς πλασεÏαθ φεÏθεÏεμ
συ.  Φιμ ατ ειυς αλθεÏυμ φιθυπεÏατοÏιβυς, ατ λατινε ηαβεμυς φολυτπατ
μεα. ΓÏαεσω λυσιλιυς εα φελ.

Θε φιξ βÏυτε συμμο, φελ ωμιτθαμ ιμπεÏδιετ εξ. Μεα ιν μωδω νυμκυαμ, σεα
Ï„Ïασθατος εξπετενδα αδ. ΓÏαεσε πλαθονεμ Ïεπυδιανδαε φιξ εα, εα ετιαμ
σωνσθιτυθο ασυεφεÏιθ σιθ. Ατ πυÏθο ναθυμ σονγυε φιξ, κυι ετ δισαμ
ινεÏμις ινιμισυς.

Î ÎµÏ Ï…Î¸ διστα ινθεγÏε, Ï€ÎµÏ Ïεκυε φιεÏενθ αδ. Îε δεσεÏυντ ινφενιÏε
ÏƒÏ‰Î½ÏƒÎµÎ¸ÎµÎ¸Ï…Ï Î¼ÎµÎ¹, αν ηομεÏω αÏγυμενθυμ Ïεπυδιανδαε πεÏ, ηις σωνσυλ μελιοÏε
ινθελλεγαμ υθ. Îες εα Î»Î±Î²Î¹Î¸Ï…Ï Î´Î¿Î»Î¿Ïεμ υλλαμσοÏπεÏ. Μει εσεντ
νεσεσιταθιβυς ιν, αφφεÏθ σαυσαε ινθεÏεσετ ηας αν.
Added test/amend.test.



















































































































































































































































































































































































































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#
# Copyright (c) 2015 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests for the "amend" command.
#

proc artifact_from_timeline {res var} {
  upvar $var artid
  regexp {(?x)[0-9]{2}(?::[0-9]{2}){2}\s+\[([0-9a-f]+)]} $res m artid
}

proc manifest_comment {comment} {
  string map [list { } {\\s} \n {\\n} \r {\\r}] $comment
}

proc uuid_from_commit {res var} {
  upvar $var HASH
  regexp {^New_Version: ([0-9a-f]{40})[0-9a-f]*$} $res m HASH
}

proc uuid_from_branch {res var} {
  upvar $var HASH
  regexp {^New branch: ([0-9a-f]{40})[0-9a-f]*$} $res m HASH
}

proc uuid_from_checkout {var} {
  global RESULT
  upvar $var HASH
  fossil status
  regexp {checkout:\s+([0-9a-f]{40})[0-9a-f]*} $RESULT m HASH
}

# Make sure we are not in an open repository and initialize new repository
test_setup

########################################
# Setup: Add file and commit           #
########################################

if {![uuid_from_checkout HASHINIT]} {
  test amend-checkout-failure false
  test_cleanup_then_return
}
write_file datafile "data"
fossil add datafile
fossil commit -m "c1"
if {![uuid_from_commit $RESULT HASH]} {
  test amend-setup-failure false
  test_cleanup_then_return
}

########################################
# Test: -branch                        #
########################################
set HASHB HASHB
write_file datafile "data.file"
fossil commit -m "c2"
if {![uuid_from_commit $RESULT HASHB]} {
  test amend-branch.setup false
}
fossil amend $HASHB -branch amended-branch
test amend-branch-1.1 {[regexp {tags:\s+amended-branch} $RESULT]}
fossil branch ls
test amend-branch-1.2 {[string first "* amended-branch" $RESULT] != -1}
fossil tag list
test amend-branch-1.3 {[string first amended-branch $RESULT] != -1}
fossil tag list --raw $HASHB
test amend-branch-1.4 {[string first "branch=amended-branch" $RESULT] != -1}
test amend-branch-1.5 {[string first "sym-amended-branch" $RESULT] != -1}
fossil timeline -n 1
test amend-branch-1.6 {[string match {*Move*to*branch*amended-branch*} $RESULT]}

########################################
# Test: -bgcolor                       #
########################################
set tc 0
foreach {color result} {
  0 0
  a a
  abcdef #abcdef
  abc123 #abc123
  123efg 123efg
  abcdefg abcdefg
  abcdeg abcdeg
  blue blue
  acf #acf
  123 #123
  #1234 #1234
  1234 1234
  123456 #123456
} {
  incr tc
  fossil amend $HASH -bgcolor $color
  test amend-bgcolor-1.$tc.a {[string match "*hash:*$HASH*" $RESULT]}
  fossil tag list --raw $HASH
  test amend-bgcolor-1.$tc.b {[string first "bgcolor=$result" $RESULT] != -1}
  fossil timeline -n 1
  test amend-bgcolor-1.$tc.c {
    [string match "*Change*background*color*to*\"$result\"*" $RESULT]
  }
  if {[artifact_from_timeline $RESULT artid]} {
    fossil artifact $artid
    test amend-bgcolor-1.$tc.d {
      [string match "*T +bgcolor $HASH* $result*" $RESULT]
    }
  } else {
    if {$VERBOSE} { protOut "No artifact found in timeline output" }
    test amend-bgcolor-1.$tc.d false
  }
}
fossil amend $HASH -bgcolor {}
test amend-bgcolor-2.1 {[string match "*hash:*$HASH*" $RESULT]}
fossil tag list --raw $HASH
test amend-bgcolor-2.2 {
  [string first "bgcolor=" $RESULT] == -1 &&
  [string first "bgcolor" $RESULT] != -1
}
fossil timeline -n 1
test amend-bgcolor-2.3 {[string match "*Cancel*background*color.*" $RESULT]}
if {[artifact_from_timeline $RESULT artid]} {
  fossil artifact $artid
  test amend-bgcolor-2.4 {[string match "*T -bgcolor $HASH*" $RESULT]}
} else {
  if {$VERBOSE} { protOut "No artifact found in timeline output" }
  test amend-bgcolor-2.4 false
}

########################################
# Test: -branchcolor                   #
########################################
set HASH2 HASH2
fossil branch new brclr $HASH
if {![uuid_from_branch $RESULT HASH2]} {
  test amend-branchcolor.setup false
}
fossil update $HASH2
fossil amend $HASH2 -branchcolor yellow
test amend-branchcolor-1.1 {[string match "*hash:*$HASH2*" $RESULT]}
fossil tag ls --raw $HASH2
test amend-branchcolor-1.2 {[string first "bgcolor=yellow" $RESULT] != -1}
fossil timeline -n 1
test amend-branchcolor-1.3 {
  [string match {*Change*branch*background*color*to*"yellow".*} $RESULT]
}
if {[regexp {(?x)[0-9]{2}(?::[0-9]{2}){2}\s+\[([0-9a-f]+)]} $RESULT m artid]} {
  fossil artifact $artid
  test amend-branchcolor-1.4 {
    [string match "*T \*bgcolor $HASH2* yellow*" $RESULT]
  }
} else {
  if {$VERBOSE} { protOut "No artifact found in timeline output" }
  test amend-branchcolor-1.4 false
}

set HASHN HASHN
write_file datafile "brclr"
fossil commit -m "brclr"
if {![uuid_from_commit $RESULT HASHN]} {
  test amend-branchcolor-propagating.setup false
}
write_file datafile "bc1"
fossil commit -m "mc1"
write_file datafile "bc2"
fossil commit -m "mc2"
fossil amend $HASHN -branchcolor deadbe
test amend-branchcolor-2.1 {[string match "*hash:*$HASHN*" $RESULT]}
fossil tag ls --raw current
test amend-branchcolor-2.2 {[string first "bgcolor=#deadbe" $RESULT] != -1}
fossil timeline -n 1
test amend-branchcolor-2.3 {
  [string match {*Change*branch*background*color*to*"#deadbe".*} $RESULT]
}

########################################
# Test: -author                        #
########################################
fossil amend $HASH -author author-test
test amend-author-1.1 {[string match {*comment:*(user:*author-test)*} $RESULT]}
fossil tag ls --raw $HASH
test amend-author-1.2 {[string first "user=author-test" $RESULT] != -1}
fossil timeline -n 1
test amend-author-1.3 {[string match {*Change*user*to*"author-test".*} $RESULT]}

########################################
# Test: -date                          #
########################################
set timestamp [clock scan yesterday]
set date [clock format $timestamp -format "%Y-%m-%d" -gmt 1]
set time [clock format $timestamp -format "%H:%M:%S" -gmt 1]
set datetime "$date $time"
fossil amend $HASHINIT -date $datetime
test amend-date-1.1 {[string match "*hash:*$HASHINIT*$datetime*" $RESULT]}
fossil tag ls --raw $HASHINIT
test amend-date-1.2 {[string first "date=$datetime" $RESULT] != -1}
fossil timeline -n 1
test amend-date-1.3 {[string match "*Timestamp*$date*$time*" $RESULT]}
set badformats {
  "%+"
  "%Y-%m-%d %H:%M%:%S %Z"
  "%d/%m/%Y %H:%M%:%S %Z"
  "%d/%m/%Y %H:%M%:%S"
  "%d/%m/%Y"
}
set sc 0
foreach badformat $badformats {
  incr sc
  set datetime [clock format $timestamp -format $badformat -gmt 1]
  fossil amend $HASHINIT -date $datetime -expectError
  test amend-date-2.$sc {[string first "YYYY-MM-DD HH:MM:SS" $RESULT] != -1}
}

########################################
# Test: -hide                          #
########################################
set HASHH HASHH
fossil revert
fossil update trunk
fossil branch new tohide current
if {![uuid_from_branch $RESULT HASHH]} {
  test amend-hide-setup false
}
fossil amend $HASHH -hide
test amend-hide-1.1 {[string match "*hash:*$HASHH*" $RESULT]}
fossil tag ls --raw $HASHH
test amend-hide-1.2 {[string first "hidden" $RESULT] != -1}
fossil timeline -n 1
test amend-hide-1.3 {[string match {*Add*propagating*"hidden".*} $RESULT]}

########################################
# Test: -close                          #
########################################
set HASHC HASHC
fossil branch new cllf $HASH
if {![uuid_from_branch $RESULT HASHC]} {
  test amend-close.setup false
}
fossil update $HASHC
fossil amend $HASHC -close
test amend-close-1.1.a {[string match "*hash:*$HASHC*" $RESULT]}
test amend-close-1.1.b {
  [string match "*comment:*Create*new*branch*named*\"cllf\"*" $RESULT]
}
fossil tag ls --raw $HASHC
test amend-close-1.2 {[string first "closed" $RESULT] != -1}
fossil timeline -n 1
test amend-close-1.3 {[string match {*Mark*"Closed".*} $RESULT]}
write_file datafile "cllf"
fossil commit -m "should fail" -expectError
test amend-close-2 {[string first "closed leaf" $RESULT] != -1}

set HASH3 HASH3
fossil revert
fossil update trunk
write_file datafile "cb"
fossil commit -m "closed-branch" --branch "closebranch"
if {![uuid_from_commit $RESULT HASH3]} {
  test amend-close-3.setup false
}
write_file datafile "b1"
fossil commit -m "m1"
write_file datafile "b2"
fossil commit -m "m2"
fossil amend $HASH3 --close
test amend-close-3.1 {[string match "*hash:*$HASH3*" $RESULT]}
fossil tag ls --raw current
test amend-close-3.2 {[string first "closed" $RESULT] != -1}
fossil timeline -n 1
test amend-close-3.3 {
  [string match "*Add*propagating*\"closed\".*" $RESULT]
}
write_file datafile "changed"
fossil commit -m "should fail" -expectError
test amend-close-3.4 {[string first "closed leaf" $RESULT] != -1}

########################################
# Test: -tag/-cancel                   #
########################################
set tagtests {
  tagged tagged
  {000000 lower Upper alpha 0alpha} {000000 0alpha Upper alpha lower}
}
set tc 0
foreach {tagt result} $tagtests {
  incr tc
  set tags {}
  set cancels {}
  set t1exp [join $result ", "]
  set t2exp "*"
  set t3exp "*"
  set t5exp "*"
  foreach tag $tagt {
    lappend tags -tag $tag
    lappend cancels -cancel $tag
  }
  foreach res $result {
    append t3exp "Add*tag*\"$res\".*"
    append t5exp "Cancel*tag*\"$res\".*"
  }
  foreach res [lsort -nocase $result] {
    append t2exp "sym-$res*"
  }
  eval fossil amend $HASH $tags
  test amend-tag-$tc.1 {[string match "*hash:*$HASH*tags:*$t1exp*" $RESULT]}
  fossil tag ls --raw $HASH
  test amend-tag-$tc.2 {[string match $t2exp $RESULT]}
  fossil timeline -n 1
  test amend-tag-$tc.3 {[string match $t3exp $RESULT]}
  eval fossil amend $HASH $cancels
  test amend-tag-$tc.4 {![string match "*tags:*$t1exp*" $RESULT]}
  fossil timeline -n 1
  test amend-tag-$tc.5 {[string match $t5exp $RESULT]}
}

########################################
# Test: -comment                       #
########################################
proc prep-test {comment content} {
  global HASH RESULT

  fossil revert
  fossil update trunk
  write_file datafile $comment
  fossil commit -m $content
  if {![uuid_from_commit $RESULT HASH]} {
    set HASH ""
  }
}

proc test-comment {name HASH comment} {
  global VERBOSE RESULT

  test amend-comment-$name.1 {
    [string match "*hash:*$HASH*comment:*$comment*" $RESULT]
  }
  fossil timeline -n 1
  if {[artifact_from_timeline $RESULT artid]} {
    fossil artifact $artid
    test amend-comment-$name.2 {
      [string match "*T +comment $HASH* *[manifest_comment $comment]*" $RESULT]
    }
  } else {
    if {$VERBOSE} { protOut "No artifact found in timeline output: $RESULT" }
    test amend-comment-$name.2 false
  }
  fossil timeline -n 1
  test amend-comment-$name.3 {
    [string match "*[short_uuid $HASH]*Edit*check-in*comment.*" $RESULT]
  }
  fossil info $HASH
  test amend-comment-$name.4 {
    [string match "*hash:*$HASH*comment:*$comment*" $RESULT]
  }
}

prep-test "revision 1" "revision 1"
fossil amend $HASH -comment "revised revision 1"
test-comment 1 $HASH "revised revision 1"

prep-test "revision 2" "revision 2"
fossil amend $HASH -m "revised revision 2 with -m"
test-comment 2 $HASH "revised revision 2 with -m"

prep-test "revision 3" "revision 3"
write_file commitmsg "revision 3 revised"
fossil amend $HASH -message-file commitmsg
test-comment 3 $HASH "revision 3 revised"

prep-test "revision 4" "revision 4"
write_file commitmsg "revision 4 revised with -M"
fossil amend $HASH -M commitmsg
test-comment 4 $HASH "revision 4 revised with -M"

prep-test "final comment" "final content"
if {[catch {exec which ed} result] == 0} {
  fossil settings editor "ed -s"
  set comment "interactive edited comment"
  fossil_maybe_answer "a\n$comment\n.\nw\nq\n" amend $HASH --edit-comment
  test-comment 5 $HASH $comment
}

########################################
# Test: NULL hash                      #
########################################
fossil amend {} -close -expectError
test amend-null-uuid {$CODE && [string first "no such check-in" $RESULT] != -1}

###############################################################################

test_cleanup
Added test/clean.test.

































































































































































































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#
# Copyright (c) 2015 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the "clean" command, including the ability to undo it.
#

test_setup

###############################################################################

fossil extra
test clean-0 {[normalize_result] eq {}}

###############################################################################

write_file f1 "f1 line"
fossil add f1
fossil commit -m "base file"
fossil ls
test clean-1 {[normalize_result] eq {f1}}

###############################################################################

fossil extra
test clean-2 {[normalize_result] eq {}}

###############################################################################

write_file f2 "f2 line"
fossil extra
test clean-3 {[normalize_result] eq {f2}}

###############################################################################

# clean w/undo enabled, should not prompt, 1 file < 10MiB
fossil clean
test clean-4 {[normalize_result] eq \
{"fossil undo" is available to undo changes to the working checkout.}}

###############################################################################

fossil extra
test clean-5 {[normalize_result] eq {}}

###############################################################################

fossil undo
test clean-6 {[normalize_result] eq {NEW    f2}}
test clean-7 {[read_file f2] eq "f2 line"}

###############################################################################

fossil extra
test clean-8 {[normalize_result] eq {f2}}

###############################################################################

write_file f3 [string repeat ABCDEFGHIJK 1048576]
fossil extra
test clean-9 {[normalize_result] eq {f2
f3}}

###############################################################################

# clean w/undo enabled, no prompt, 1 file < 10MiB, 1 file > 10MiB
fossil clean --no-prompt
test clean-10 {[normalize_result] eq \
{"fossil undo" is available to undo changes to the working checkout.}}

###############################################################################

fossil extra
test clean-11 {[normalize_result] eq {f3}}

###############################################################################

fossil undo
test clean-12 {[normalize_result] eq {NEW    f2}}
test clean-13 {[read_file f2] eq "f2 line"}
test clean-14 {[read_file f3] eq [string repeat ABCDEFGHIJK 1048576]}

###############################################################################

fossil extra
test clean-15 {[normalize_result] eq {f2
f3}}

###############################################################################

# clean w/undo enabled, force, 1 file < 10MiB, 1 file > 10MiB
fossil clean --force
test clean-16 {[normalize_result] eq \
{"fossil undo" is available to undo changes to the working checkout.}}

###############################################################################

fossil extra
test clean-17 {[normalize_result] eq {}}

###############################################################################

fossil undo
test clean-18 {[normalize_result] eq {NEW    f2}}
test clean-19 {[read_file f2] eq "f2 line"}

###############################################################################

write_file f4 [string repeat KJIHGFEDCBA 1048576]
fossil extra
test clean-20 {[normalize_result] eq {f2
f4}}

###############################################################################

# clean w/undo disabled, no prompt, 1 file < 10MiB, 1 file > 10MiB
fossil clean --disable-undo --no-prompt
test clean-21 {[normalize_result] eq {}}

###############################################################################

fossil extra
test clean-22 {[normalize_result] eq {f2
f4}}

###############################################################################

fossil undo -expectError
test clean-23 {[normalize_result] eq {nothing to undo}}

###############################################################################

# clean w/undo disabled, force, 1 file < 10MiB, 1 file > 10MiB
fossil clean --disable-undo --force
test clean-24 {[normalize_result] eq {}}

###############################################################################

fossil extra
test clean-25 {[normalize_result] eq {}}

###############################################################################

fossil undo -expectError
test clean-26 {[normalize_result] eq {nothing to undo}}

###############################################################################

write_file f5 "f5 line"
fossil extra
test clean-27 {[normalize_result] eq {f5}}

###############################################################################

# clean w/undo disabled, should prompt, 1 file < 10MiB
fossil_maybe_answer Y clean --disable-undo
test clean-28 {[normalize_result] eq \
{WARNING: Deletion of this file will not be undoable via the 'undo'
         command because undo is disabled for this operation.

Remove unmanaged file "f5" (a=all/y/N)?}}

###############################################################################

fossil extra
test clean-29 {[normalize_result] eq {}}

###############################################################################

fossil undo -expectError
test clean-30 {[normalize_result] eq {nothing to undo}}

###############################################################################

fossil extra
test clean-31 {[normalize_result] eq {}}

###############################################################################

test_cleanup
Added test/cmdline.test.






















































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#
# Copyright (c) 2012 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test command line parsing
#

test_setup ""

proc cmd-line {usefile testname args} {
  set i 1
  foreach {cmdline result} $args {
    if {$usefile} {
      set cmdlinefile [file join \
          [getTemporaryPath] fossil-cmd-line-$testname.txt]

      write_file $cmdlinefile $cmdline
      fossil test-echo --args $cmdlinefile
      file delete $cmdlinefile
    } else {
      fossil test-echo $cmdline
    }

    test cmd-line-$testname.$i \
        {[lrange [split $::RESULT \n] 3 end]=="\{argv\[2\] = \[$result\]\}"}

    incr i
  }
}

cmd-line false 100 abc abc a\"bc a\"bc \"abc\" \"abc\"

#
# NOTE: Use an --args file on Windows to avoid unwanted glob expansion
#       from MinGW and/or the MSVCRT.
#
cmd-line $is_windows 101 * * *.* *.*

###############################################################################

test_cleanup
Added test/comment.test.


























































































































































































































































































































































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#
# Copyright (c) 2014 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test comment formatting and printing.
#

test_setup ""

###############################################################################

fossil test-comment-format "" ""
test comment-1 {$RESULT eq "\n(1 lines output)"}

###############################################################################

fossil test-comment-format --decode "" ""
test comment-2 {$RESULT eq "\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 26 " " "this is a short comment."
test comment-3 {$RESULT eq " this is a short comment.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --decode " " "this is a short comment."
test comment-4 {$RESULT eq " this is a short comment.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 26 "*PREFIX* " "this is a short comment."
test comment-5 {$RESULT eq "*PREFIX* this is a short c\n         omment.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --decode "*PREFIX* " "this is a short comment."
test comment-6 {$RESULT eq "*PREFIX* this is a short c\n         omment.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 "" "this\\sis\\sa\\sshort\\scomment."
test comment-7 {$RESULT eq "this\\sis\\sa\\sshort\\scommen\nt.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --decode "" "this\\sis\\sa\\sshort\\scomment."
test comment-8 {$RESULT eq "this is a short comment.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 78 --decode --trimspace "HH:MM:SS " "this is a long comment that should span multiple lines if the test is working correctly."
test comment-9 {$RESULT eq "HH:MM:SS this is a long comment that should span multiple lines if the test is\n         working correctly.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 78 --decode --trimspace "HH:MM:SS " "this is a long comment that should span multiple lines if the test is working correctly.  more text here describing the issue.\\nanother line here..................................................................................*"
test comment-10 {$RESULT eq "HH:MM:SS this is a long comment that should span multiple lines if the test is\n         working correctly.  more text here describing the issue.\n         another line here....................................................\n         ..............................*\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 78 "HH:MM:SS " "....................................................................................*"
test comment-11 {$RESULT eq "HH:MM:SS .....................................................................\n         ...............*\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 78 "HH:MM:SS " ".....................................................................*" 78
test comment-12 {$RESULT eq "HH:MM:SS .....................................................................\n         *\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 "*TEST* " "this\tis a test."
test comment-13 {$RESULT eq "*TEST* this\tis a te\n       st.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 60 "*TEST* " "this is a test......................................................................................................................."
test comment-14 {$RESULT eq "*TEST* this is a test.......................................\n       .....................................................\n       ...........................\n(3 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --wordbreak "*TEST* " "this is a test......................................................................................................................."
test comment-15 {$RESULT eq "*TEST* this is a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 "*TEST* " "this	is	a	test......................................................................................................................."
test comment-16 {$RESULT eq "*TEST* this	is	a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --wordbreak "*TEST* " "this	is	a	test......................................................................................................................."
test comment-17 {$RESULT eq "*TEST* this	is	a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 "*TEST* " "one two three four five six seven eight nine ten eleven twelve"
test comment-18 {$RESULT eq "*TEST* one two three four five six seven eight nine ten elev\n       en twelve\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --wordbreak "*TEST* " "one two three four five six seven eight nine ten eleven twelve"
test comment-19 {$RESULT eq "*TEST* one two three four five six seven eight nine ten\n       eleven twelve\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 60 "*TEST* " "one	two	three	four	five	six	seven	eight	nine	ten	eleven	twelve"
test comment-20 {$RESULT eq "*TEST* one	two	three	four	five\n       six	seven	eight	nine	ten\n       eleven	twelve\n(3 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --wordbreak "*TEST* " "one	two	three	four	five	six	seven	eight	nine	ten	eleven	twelve"
test comment-21 {$RESULT eq "*TEST* one	two	three	four	five\n       six	seven	eight	nine	ten\n       eleven	twelve\n(3 lines output)"}

###############################################################################

fossil test-comment-format --legacy "" ""
test comment-22 {$RESULT eq "\n(1 lines output)"}

###############################################################################

fossil test-comment-format --legacy --decode "" ""
test comment-23 {$RESULT eq "\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --legacy " " "this is a short comment."
test comment-24 {$RESULT eq " this is a short comment.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --legacy --decode " " "this is a short comment."
test comment-25 {$RESULT eq " this is a short comment.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 25 --legacy "*PREFIX* " "this is a short comment."
test comment-26 {$RESULT eq "*PREFIX* this is a short\n         comment.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 25 --legacy --decode "*PREFIX* " "this is a short comment."
test comment-27 {$RESULT eq "*PREFIX* this is a short\n         comment.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --legacy "" "this\\sis\\sa\\sshort\\scomment."
test comment-28 {$RESULT eq "this\\sis\\sa\\sshort\\scommen\nt.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --legacy --decode "" "this\\sis\\sa\\sshort\\scomment."
test comment-29 {$RESULT eq "this is a short comment.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 78 --legacy --decode "HH:MM:SS " "this is a long comment that should span multiple lines if the test is working correctly."
test comment-30 {$RESULT eq "HH:MM:SS this is a long comment that should span multiple lines if the test\n         is working correctly.\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 78 --legacy --decode "HH:MM:SS " "this is a long comment that should span multiple lines if the test is working correctly.  more text here describing the issue.\\nanother line here..................................................................................*"
test comment-31 {$RESULT eq "HH:MM:SS this is a long comment that should span multiple lines if the test\n         is working correctly. more text here describing the issue. another\n         line\n         here.................................................................\n         .................*\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 78 --legacy "HH:MM:SS " "....................................................................................*"
test comment-32 {$RESULT eq "HH:MM:SS .....................................................................\n         ...............*\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 78 --legacy "HH:MM:SS " ".....................................................................*"
test comment-33 {$RESULT eq "HH:MM:SS .....................................................................\n         *\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 26 --legacy "*TEST* " "this\tis a test."
test comment-34 {$RESULT eq "*TEST* this is a test.\n(1 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy "*TEST* " "this is a test......................................................................................................................."
test comment-35 {$RESULT eq "*TEST* this is a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy --wordbreak "*TEST* " "this is a test......................................................................................................................."
test comment-36 {$RESULT eq "*TEST* this is a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy "*TEST* " "this	is	a	test......................................................................................................................."
test comment-37 {$RESULT eq "*TEST* this is a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy --wordbreak "*TEST* " "this	is	a	test......................................................................................................................."
test comment-38 {$RESULT eq "*TEST* this is a\n       test.................................................\n       .....................................................\n       .................\n(4 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy "*TEST* " "one two three four five six seven eight nine ten eleven twelve"
test comment-39 {$RESULT eq "*TEST* one two three four five six seven eight nine ten\n       eleven twelve\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy --wordbreak "*TEST* " "one two three four five six seven eight nine ten eleven twelve"
test comment-40 {$RESULT eq "*TEST* one two three four five six seven eight nine ten\n       eleven twelve\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy "*TEST* " "one	two	three	four	five	six	seven	eight	nine	ten	eleven	twelve"
test comment-41 {$RESULT eq "*TEST* one two three four five six seven eight nine ten\n       eleven twelve\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 60 --legacy --wordbreak "*TEST* " "one	two	three	four	five	six	seven	eight	nine	ten	eleven	twelve"
test comment-42 {$RESULT eq "*TEST* one two three four five six seven eight nine ten\n       eleven twelve\n(2 lines output)"}

###############################################################################

set orig "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\\nxxxxxxx."
fossil test-comment-format --width 73 --decode --origbreak "" $orig
test comment-43 {$RESULT eq "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 73 --decode --origbreak "" $orig $orig
test comment-44 {$RESULT eq "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 73 --decode --origbreak "" "00:00:00 \[0000000000\] *CURRENT* $orig" $orig
test comment-45 {$RESULT eq "00:00:00 \[0000000000\] *CURRENT* \nxxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(6 lines output)"}

###############################################################################

fossil test-comment-format --width 82 --indent 9 --decode --origbreak "         " $orig
test comment-46 {$RESULT eq "         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 82 --indent 9 --decode --origbreak "         " $orig $orig
test comment-47 {$RESULT eq "         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 82 --indent 9 --decode --origbreak "00:00:00 " "\[0000000000\] *CURRENT* $orig" $orig
test comment-48 {$RESULT eq "00:00:00 \[0000000000\] *CURRENT* \n         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(6 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --decode --trimspace --origbreak "" $orig
test comment-49 {$RESULT eq "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --decode --trimspace --origbreak "" $orig $orig
test comment-50 {$RESULT eq "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --decode --trimspace --origbreak "" "00:00:00 \[0000000000\] *CURRENT* $orig" $orig
test comment-51 {$RESULT eq "00:00:00 \[0000000000\] *CURRENT* \nxxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(6 lines output)"}

###############################################################################

fossil test-comment-format --width 81 --indent 9 --decode --trimspace --origbreak "         " $orig
test comment-52 {$RESULT eq "         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 81 --indent 9 --decode --trimspace --origbreak "         " $orig $orig
test comment-53 {$RESULT eq "         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 81 --indent 9 --decode --trimspace --origbreak "00:00:00 " "\[0000000000\] *CURRENT* $orig" $orig
test comment-54 {$RESULT eq "00:00:00 \[0000000000\] *CURRENT* \n         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(6 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --decode --trimcrlf --origbreak "" $orig
test comment-55 {$RESULT eq "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --decode --trimcrlf --origbreak "" $orig $orig
test comment-56 {$RESULT eq "xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --decode --trimcrlf --origbreak "" "00:00:00 \[0000000000\] *CURRENT* $orig" $orig
test comment-57 {$RESULT eq "00:00:00 \[0000000000\] *CURRENT* \nxxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\nxxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\nxxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\nxxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\nxxxxxxx.\n(6 lines output)"}

###############################################################################

fossil test-comment-format --width 81 --indent 9 --decode --trimcrlf --origbreak "         " $orig
test comment-58 {$RESULT eq "         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 81 --indent 9 --decode --trimcrlf --origbreak "         " $orig $orig
test comment-59 {$RESULT eq "         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(5 lines output)"}

###############################################################################

fossil test-comment-format --width 81 --indent 9 --decode --trimcrlf --origbreak "00:00:00 " "\[0000000000\] *CURRENT* $orig" $orig
test comment-60 {$RESULT eq "00:00:00 \[0000000000\] *CURRENT* \n         xxxx xx xxxxxxx xxxx xxxxxx xxxxxxx, xxxxxxx, x xxxx xxxxxx xx xxxx xxxx\n         xxxxxxx xxxxx xxxx  xxxx xx xxxxxxx xxxxxxx (xxxxxx  xxxxxxxxx x xxxxx).\n         xxx'x xxx xxx xx  xxxxx xxxx xxx xxx --xxxxxxxxxxx xxxxxx  xx xx xxxx. x\n         xxxxx  x xxxxxx  xxxx xxxx  xxxx xxxx  xxxx x  xxxxx xx  xxx x  xxxxxxxx\n         xxxxxxx.\n(6 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --file "" [file join $testdir "utf8-comment.txt"]
test comment-61 {$RESULT eq "The comment formatter handles fullwidth and multi-byte \[äöü\] an\nd symbols \[☃\] and emoji \[💾\] characters!\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --wordbreak --file "" [file join $testdir "utf8-comment.txt"]
test comment-62 {$RESULT eq "The comment formatter handles fullwidth and multi-byte \[äöü\]\nand symbols \[☃\] and emoji \[💾\] characters!\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --legacy --file "" [file join $testdir "utf8-comment.txt"]
test comment-63 {$RESULT eq "The comment formatter handles fullwidth and multi-byte \[äöü\]\nand symbols \[☃\] and emoji \[💾\] characters!\n(2 lines output)"}

###############################################################################

fossil test-comment-format --width 72 --legacy --wordbreak --file "" [file join $testdir "utf8-comment.txt"]
test comment-64 {$RESULT eq "The comment formatter handles fullwidth and multi-byte \[äöü\]\nand symbols \[☃\] and emoji \[💾\] characters!\n(2 lines output)"}

###############################################################################

test_cleanup
Added test/commit-warning.test.

















































































































































































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# The focus of this file is to test pre-commit warnings.
#

test_setup

# binary
write_file binary "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"

# text with CRLF lines
write_file crlf.txt [subst -nocommands -novariables \
{ordinary text\r
cariage returns and line feeds\r
on several lines\r\n}]

# text with mixed line endings
write_file cr-only.txt "AAA\rBBB\rCCC\r"
write_file cr-lf-crlf.txt "AAA\rBBB\nCCC\r\n"

# unix plain text includes the empty file by generalization
write_file empty ""
write_file plain.txt {
Lorem ipsum
dolor sic amet
}

# try long lines
set a3 "abcdefgh"
set a4 $a3$a3
set a5 $a4$a4
set a6 $a5$a5
write_file line-0064 "$a6\n"
set a7 $a6$a6
set a8 $a7$a7
set a9 $a8$a8
set a10 $a9$a9
write_file line-1024 "$a10\n"
set a11 $a10$a10
write_file line-2048 "$a11\n"
set a12 $a11$a11
write_file line-4096 "$a12\n"
set a13 $a12$a12
write_file line-8192 "$a13\n"
set a14 $a13$a13
write_file line-16K "$a14\n"
set a15 $a14$a14
write_file line-32K "$a15\n"
set a16 $a15$a15
write_file line-64K "$a16\n"

# UTF-8 extends 7-bit ASCII using bytes 80 and above to encode
# larger character codes. Unicode uses U+0 through U+10FFFF only,
# with U+D800 through U+DFFF reserved for surrogate pairs.
# UTF-8 is valid if it is the shortest possible coding, encodes a
# valid Unicode code point. But it's complicated.
write_file utf-mod-c0-80 "11 bit NUL:\xC0\x80 is sometimes ok\n"
write_file utf-bad-e0-80-80 "16 bit NUL:\xE0\x80\x80 is bad\n"
write_file utf-bad-f0-80-80-80 "21 bit NUL:\xF0\x80\x80\x80 is bad\n"
write_file utf-bad-f8-80-80-80-80 "26 bit NUL:\xF8\x80\x80\x80\x80 is bad\n"
write_file utf-bad-fc-80-80-80-80-80 "31 bit NUL:\xFC\x80\x80\x80\x80\x80 is bad\n"
write_file utf-bad-fe-80-80-80-80-80-80 "36 bit NUL:\xFC\x80\x80\x80\x80\x80 is bad\n"
write_file utf-bad-c0-81 "overlong SOH:\xC0\x81 is bad\n"
write_file utf-bad-c0-bf "overlong '?':\xC0\xBF is bad\n"
write_file utf-bad-c1-bf "overlong DEL:\xC1\xBF is bad\n"
write_file utf-bad-f4-90-80-80 "U+110000 not allowed:\xF4\x90\x80 not unicode\n"
write_file utf-bad-f9-80-80-80-80 "U+2000000 not allowed:\xF9\x80\x80\x80\x80 not unicode\n"
write_file utf-bad-ff "no byte FF:\xFF\n"
write_file utf-ill16-lead "lead surrogate U+D800:\xED\xA0\x80 is ill formed\n"
write_file utf-ill16-trail "trail surrogate U+DC00:\xED\xB0\x80 is ill formed\n"
write_file utf-ill16-pair "surrogate pair U+10000:\xED\xA0\x80\xED\xB0\x80 is ill formed\n"
set emoji "micro-smile \xC2\xB5\xE2\x98\xBA\npale facepalm \xF0\x9F\xA4\xA6\xF0\x9F\x8F\xBB\n"
protOut $emoji
write_file utf-8-emoji $emoji
write_file utf-8-bom-emoji "\xef\xbb\xbf$emoji"

# UTF-16 uses 16-bit values to cover all valid unicode code points
# from U+0 to U+10FFFF, using surrogate pairs to escape the BMP.
# Interchange require knowing (and preserving) byte order.
set hello16LE "h\x00e\x00l\x00l\x00o\x00\n\x00"
set hello16BE "\x00h\x00e\x00l\x00l\x00o\x00\n"
write_file utf-16le-hello $hello16LE
write_file utf-16be-hello $hello16BE
set bomLE "\xff\xfe"
set bomBE "\xfe\xff"
write_file utf-16le-bomle-hello "$bomLE$hello16LE"
write_file utf-16be-bombe-hello "$bomBE$hello16BE"
write_file utf-16le-bombe-hello "$bomBE$hello16LE"
write_file utf-16be-bomle-hello "$bomLE$hello16BE"
set le16 [read_file [file join $testdir utf16le.txt]]
set be16 [read_file [file join $testdir utf16be.txt]]
write_file utf-16le.txt $le16
write_file utf-16be.txt $be16
write_file utf-nobom-16le.txt [string range $le16 2 end]
write_file utf-nobom-16be.txt [string range $be16 2 end]
#write_file [file join $::env(TEMP) utf-nobom-16le.txt] [string range $le16 2 end]
#write_file [file join $::env(TEMP) utf-nobom-16be.txt] [string range $be16 2 end]

# make all the test files known to fossil, then test
fossil addremove
fossil test-commit-warning --no-settings -v
test pre-commit-warnings-1 {[normalize_result] eq \
    [subst -nocommands -novariables [string trim {
1\tbinary\tbinary data
1\tcr-lf-crlf.txt\tmixed line endings
1\tcr-only.txt\tCR line endings
1\tcrlf.txt\tCR/LF line endings
0\tempty\t
0\tline-0064\t
0\tline-1024\t
0\tline-16K\t
0\tline-2048\t
1\tline-32K\tlong lines
0\tline-4096\t
1\tline-64K\tlong lines
0\tline-8192\t
0\tplain.txt\t
1\tutf-16be-bombe-hello\tUnicode
1\tutf-16be-bomle-hello\tUnicode
1\tutf-16be-hello\tbinary data
1\tutf-16be.txt\tUnicode
1\tutf-16le-bombe-hello\tUnicode
1\tutf-16le-bomle-hello\tUnicode
1\tutf-16le-hello\tbinary data
1\tutf-16le.txt\tUnicode
0\tutf-8-bom-emoji\t
0\tutf-8-emoji\t
1\tutf-bad-c0-81\tinvalid UTF-8
1\tutf-bad-c0-bf\tinvalid UTF-8
1\tutf-bad-c1-bf\tinvalid UTF-8
1\tutf-bad-e0-80-80\tinvalid UTF-8
1\tutf-bad-f0-80-80-80\tinvalid UTF-8
1\tutf-bad-f4-90-80-80\tinvalid UTF-8
1\tutf-bad-f8-80-80-80-80\tinvalid UTF-8
1\tutf-bad-f9-80-80-80-80\tinvalid UTF-8
1\tutf-bad-fc-80-80-80-80-80\tinvalid UTF-8
1\tutf-bad-fe-80-80-80-80-80-80\tinvalid UTF-8
1\tutf-bad-ff\tinvalid UTF-8
0\tutf-ill16-lead\t
0\tutf-ill16-pair\t
0\tutf-ill16-trail\t
0\tutf-mod-c0-80\t
1\tutf-nobom-16be.txt\tbinary data
1\tutf-nobom-16le.txt\tbinary data
1}]]}


###############################################################################

# TODO: Change to a collection of test-case crafted files
#       rather than depend on this list of files that will
#       be fragile as development progresses.
#
# Unless the real goal of this test is to document a collection
# of source files that MUST NEVER BE TEXT.
#
test_block_in_checkout pre-commit-warnings-fossil-1 {
  fossil test-commit-warning --no-settings
} {
  test pre-commit-warnings-fossil-1 {[normalize_result] eq \
      [subst -nocommands -novariables [string trim {
1\tcompat/zlib/contrib/blast/test.pk\tbinary data
1\tcompat/zlib/contrib/dotzlib/DotZLib.build\tCR/LF line endings
1\tcompat/zlib/contrib/dotzlib/DotZLib.chm\tbinary data
1\tcompat/zlib/contrib/dotzlib/DotZLib.sln\tCR/LF line endings
1\tcompat/zlib/contrib/dotzlib/DotZLib/AssemblyInfo.cs\tCR/LF line endings
1\tcompat/zlib/contrib/dotzlib/DotZLib/ChecksumImpl.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/CircularBuffer.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/Deflater.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/DotZLib.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/DotZLib.csproj\tCR/LF line endings
1\tcompat/zlib/contrib/dotzlib/DotZLib/GZipStream.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/Inflater.cs\tinvalid UTF-8
1\tcompat/zlib/contrib/dotzlib/DotZLib/UnitTests.cs\tCR/LF line endings
1\tcompat/zlib/contrib/dotzlib/LICENSE_1_0.txt\tCR/LF line endings
1\tcompat/zlib/contrib/dotzlib/readme.txt\tCR/LF line endings
1\tcompat/zlib/contrib/gcc_gvmat64/gvmat64.S\tCR/LF line endings
1\tcompat/zlib/contrib/puff/zeros.raw\tbinary data
1\tcompat/zlib/contrib/testzlib/testzlib.c\tCR/LF line endings
1\tcompat/zlib/contrib/testzlib/testzlib.txt\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/readme.txt\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/miniunz.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/miniunz.vcxproj.filters\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/minizip.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/minizip.vcxproj.filters\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/testzlib.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/testzlib.vcxproj.filters\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/testzlibdll.vcxproj.filters\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlib.rc\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlibstat.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlibstat.vcxproj.filters\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlibvc.def\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlibvc.sln\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlibvc.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc10/zlibvc.vcxproj.filters\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/miniunz.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/minizip.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/testzlib.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/testzlibdll.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/zlib.rc\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/zlibstat.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/zlibvc.def\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/zlibvc.sln\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc11/zlibvc.vcxproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc12/zlibvc.def\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc14/zlibvc.def\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/miniunz.vcproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/minizip.vcproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/testzlib.vcproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/testzlibdll.vcproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/zlib.rc\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/zlibstat.vcproj\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/zlibvc.def\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/zlibvc.sln\tCR/LF line endings
1\tcompat/zlib/contrib/vstudio/vc9/zlibvc.vcproj\tCR/LF line endings
1\tcompat/zlib/win32/zlib.def\tCR/LF line endings
1\tcompat/zlib/zlib.3.pdf\tbinary data
1\tcompat/zlib/zlib.map\tCR/LF line endings
1\textsrc/pikchr.wasm\tbinary data
1\tskins/blitz/arrow_project.png\tbinary data
1\tskins/blitz/dir.png\tbinary data
1\tskins/blitz/file.png\tbinary data
1\tskins/blitz/fossil_100.png\tbinary data
1\tskins/blitz/fossil_80_reversed_darkcyan.png\tbinary data
1\tskins/blitz/fossil_80_reversed_darkcyan_text.png\tbinary data
1\tskins/blitz/rss_20.png\tbinary data
1\tsrc/alerts/bflat2.wav\tbinary data
1\tsrc/alerts/bflat3.wav\tbinary data
1\tsrc/alerts/bloop.wav\tbinary data
1\tsrc/alerts/plunk.wav\tbinary data
1\tsrc/sounds/0.wav\tbinary data
1\tsrc/sounds/1.wav\tbinary data
1\tsrc/sounds/2.wav\tbinary data
1\tsrc/sounds/3.wav\tbinary data
1\tsrc/sounds/4.wav\tbinary data
1\tsrc/sounds/5.wav\tbinary data
1\tsrc/sounds/6.wav\tbinary data
1\tsrc/sounds/7.wav\tbinary data
1\tsrc/sounds/8.wav\tbinary data
1\tsrc/sounds/9.wav\tbinary data
1\tsrc/sounds/a.wav\tbinary data
1\tsrc/sounds/b.wav\tbinary data
1\tsrc/sounds/c.wav\tbinary data
1\tsrc/sounds/d.wav\tbinary data
1\tsrc/sounds/e.wav\tbinary data
1\tsrc/sounds/f.wav\tbinary data
1\ttest/th1-docs-input.txt\tCR/LF line endings
1\ttest/th1-hooks-input.txt\tCR/LF line endings
1\ttest/utf16be.txt\tUnicode
1\ttest/utf16le.txt\tUnicode
1\twin/buildmsvc.bat\tCR/LF line endings
1\twin/fossil.ico\tbinary data
1\twin/fossil.rc\tinvalid UTF-8
1\twww/apple-touch-icon.png\tbinary data
1\twww/background.jpg\tbinary data
1\twww/build-icons/linux.gif\tbinary data
1\twww/build-icons/linux64.gif\tbinary data
1\twww/build-icons/mac.gif\tbinary data
1\twww/build-icons/openbsd.gif\tbinary data
1\twww/build-icons/src.gif\tbinary data
1\twww/build-icons/win32.gif\tbinary data
1\twww/copyright-release.pdf\tbinary data
1\twww/encode1.gif\tbinary data
1\twww/encode2.gif\tbinary data
1\twww/encode3.gif\tbinary data
1\twww/encode4.gif\tbinary data
1\twww/encode5.gif\tbinary data
1\twww/encode6.gif\tbinary data
1\twww/encode7.gif\tbinary data
1\twww/encode8.gif\tbinary data
1\twww/encode9.gif\tbinary data
1\twww/fossil.gif\tbinary data
1\twww/fossil2.gif\tbinary data
1\twww/fossil3.gif\tbinary data
1\twww/fossil_logo_small.gif\tbinary data
1\twww/fossil_logo_small2.gif\tbinary data
1\twww/fossil_logo_small3.gif\tbinary data
1\twww/server/windows/cgi-bin-perm.png\tbinary data
1\twww/server/windows/cgi-exec-perm.png\tbinary data
1\twww/server/windows/cgi-install-iis.png\tbinary data
1\twww/server/windows/cgi-script-map.png\tbinary data
1\twww/xkcd-git.gif\tbinary data
1}]]}
}

###############################################################################

test_cleanup
Added test/contains-selector.test.























































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#
# Copyright (c) 2015 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test containsSelector() function in src/style.c
#

test_setup ""

proc contains-selector {testId css selectorResultMap} {
  set css [string trim $css]
  set filename [file join $::tempPath compare-selector.css]
  set fh [open $filename w]
  puts -nonewline $fh $css
  close $fh
  foreach {selector found} $selectorResultMap {
    set expected "$selector [expr {$found ? "found" : "not found"}]"
    set result [fossil test-contains-selector $filename $selector]
    test "contains-selector $testId $selector" {$result eq $expected}
  }
  file delete $filename
}

contains-selector 1 {
  .a.b {}
  .c .de {}
  /* comment */
  .c .d, .e /* comment */ {}
} {
  .a 0
  .b 0
  .a.b 1
  .c 0
  .d 0
  {.c.d} 0
  {.c .d} 1
  .e 1
}

###############################################################################

test_cleanup
Added test/csp1.html.


















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<!DOCTYPE html>
<html>
<head>
<title>Title: Content Security Policy Test</title>
</head>
<body>
<h1>Content Security Policy Test</h1>

<p>If the content-security-policy is ineffective, a pop-up dialog
box will appears.  If there is no dialog box, then CSP is working
correctly.</p>

<script>alert('Content Security Policy is ineffective');</script>
<img src='/' onerror='alert("CSP is ineffective")'>

<p>As a double-check, open the Developer Console in your web-browser
and verify that two CSP violations were detected and blocked.</p>
</body>
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#
# Copyright (c) 2006 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the delta mechanism.
#

test_setup ""

# Use test script files as the basis for this test.
#
# For each test, copy the file intact to "./t1".  Make
# some random changes in "./t2".  Then call test-delta on the
# two files to make sure that deltas between these two files
# work properly.
#
set filelist [glob $testdir/*]
set filelist [lsort [glob $testdir/*]]
foreach f $filelist {
  if {[file isdir $f]} continue
  set base [file root [file tail $f]]
puts "base=$base f=$f"
  set f1 [read_file $f]
  write_file t1 $f1
  for {set i 0} {$i<100} {incr i} {
    write_file t2 [random_changes $f1 1 1 0 0.1]
    fossil test-delta t1 t2
    test delta-$base-$i-1 {$RESULT=="ok"}
    test delta-$base-$i-1 {[normalize_result]=="ok"}
    write_file t2 [random_changes $f1 1 1 0 0.2]
    fossil test-delta t1 t2
    test delta-$base-$i-2 {$RESULT=="ok"}
    test delta-$base-$i-2 {[normalize_result]=="ok"}
    write_file t2 [random_changes $f1 1 1 0 0.4]
    fossil test-delta t1 t2
    test delta-$base-$i-3 {$RESULT=="ok"}
    test delta-$base-$i-3 {[normalize_result]=="ok"}
  }
}

set empties { "" "" "" a a "" }
set i 0
foreach {f1 f2} $empties {
  incr i
  write_file t1 $f1
  write_file t2 $f2
  fossil test-delta t1 t2
  test delta-empty-$i {[normalize_result]=="ok"}
}
###############################################################################

test_cleanup
Added test/diff-test-1.wiki.




























































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<title>Graph Test One</title>

This page contains list of URLs of interesting diffs.
Click on all URLs, one by one, to verify
the correct operation of the diff logic.
For correct testing, many of these require <tt>show-version-diffs</tt>
to be enabled in the [/setup_timeline|Timeline Display Preferences]
configuration page.

  *  <a href="../../../info/030035345c#chunk73" target="testwindow">
     Multiple edits on a single line.</a>  This is an SQLite version
     update diff.  It is a large diff and contains many other interesting
     features.  Scan the whole diff.
  *  <a href="../../../fdiff?v1=6da016415dc52d61&v2=af6df3466e3c4a88"
     target="testwindow">Tricky alignment and multiple edits per line</a>.
  *  <a href="../../../fdiff?v1=7108d4748b111d23&v2=2303a98525b39d19#chunk3"
     target="testwindow">Add a column to a table</a>
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     target="testwindow">Column alignment with multibyte characters.</a>
     The edit of a line with multibyte characters is the first chunk.
  *  <a href="../../../fdiff?v1=57b0d8183cab0e3d&v2=37b3ef49d73cdfe6"
     target="testwindow">Large diff of sqlite3.c</a>.  This diff was very
     slow prior to the performance enhancement change [9e15437e97].
  *  <a href="../../../info/bda00cbada#chunk49" target="testwindow">
     A difficult indentation change.</a>  UPDATE:  Notice also the improved
      multi-segment update marks on lines 122648 and 122763 on the new side.
  *  <a href="../../../fdiff?v1=bc8100c9ee01b8c2&v2=1d2acc1a2a65c2bf#chunk42"
      target="testwindow">Inverse of the previous.</a>
  *  <a href="../../../fdiff?v1=955cc67ace8fb622&v2=e2e1c87b86664b45#chunk13"
      target="testwindow">Another tricky indentation.</a>  Notice especially
      lines 59398 and 59407 on the left.
  *  <a href="../../../fdiff?v2=955cc67ace8fb622&v1=e2e1c87b86664b45#chunk13"
      target="testwindow">Inverse of the previous.</a>
  *  <a href="../../../fdiff?v1=955cc67ace8fb622&v2=e2e1c87b86664b45#chunk24"
      target="testwindow">A complex change</a> that is difficult to align, and
      hence falls back to the "delete left and insert right" strategy.
  *  <a href="../../../fdiff?v2=955cc67ace8fb622&v1=e2e1c87b86664b45#chunk24"
      target="testwindow">Inverse of the previous.</a>
  *  <a href="../../../fdiff?v1=21f9a00fe2fa4a17&v2=d5c4ff0532bd89c3#chunk5"
      target="testwindow">sqlite3.c changes</a>
      that are difficult to align.
  *  <a href="../../../fdiff?v2=21f9a00fe2fa4a17&v1=d5c4ff0532bd89c3#chunk5"
      target="testwindow">sqlite3.c changes inverted.</a>
  *  <a href="../../../fdiff?v1=4f70c682e44f&v2=55659c6e062994f"
      target="testwindow">Lorem Ipsum in Greek.</a>
  *  <a href="../../../fdiff?v2=4f70c682e44f&v1=55659c6e062994f"
      target="testwindow">Lorem Ipsum in Greek inverted.</a>

External:

  *  <a href="http://www.sqlite.org/src/fdiff?v1=aafcb21a74e41f9a&v2=a6d127dd05daf0f9#chunk3" target="testwindow">
     Code indentation change.</a>
  *  <a href="http://www.sqlite.org/src/info/52e755943f" target="testwindow">
     A complex change (chunk 1) in which the alignment becomes so complex
     that it is better for clarity to abandon it and just show the left
     and right sides contiguously.</a>
  *  <a href="http://www.sqlite.org/src/info/3d65c70343#chunk5"
     target="testwindow">
     An indentation change.  See especially lines 2313 and 2317 on the right,
     that their green indentation addition is left-justified.</a>
Added test/diff.test.


































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests for the diff command.
#

require_no_open_checkout

test_setup; set rootDir [file normalize [pwd]]

###################################
# Tests of binary file detection. #
###################################

file mkdir .fossil-settings
write_file [file join .fossil-settings binary-glob] "*"

write_file file0.dat ""; # no content.
write_file file1.dat "test file 1 (one line no term)."
write_file file2.dat "test file 2 (NUL character).\0"
write_file file3.dat "test file 3 (long line).[string repeat x 32768]"
write_file file4.dat "test file 4 (long line).[string repeat y 32768]\ntwo"
write_file file5.dat "[string repeat z 32768]\ntest file 5 (long line)."

fossil add $rootDir
fossil commit -m "c1"

###############################################################################

fossil ls
test diff-ls-1 {[normalize_result] eq \
"file0.dat\nfile1.dat\nfile2.dat\nfile3.dat\nfile4.dat\nfile5.dat"}

###############################################################################

write_file file0.dat "\0"
fossil diff file0.dat

test diff-file0-1 {[normalize_result] eq {Index: file0.dat
==================================================================
--- file0.dat
+++ file0.dat
cannot compute difference between binary files}}

###############################################################################

write_file file1.dat [string repeat z 32768]
fossil diff file1.dat

test diff-file1-1 {[normalize_result] eq {Index: file1.dat
==================================================================
--- file1.dat
+++ file1.dat
cannot compute difference between binary files}}

###############################################################################

write_file file2.dat "test file 2 (no NUL character)."
fossil diff file2.dat

test diff-file2-1 {[normalize_result] eq {Index: file2.dat
==================================================================
--- file2.dat
+++ file2.dat
cannot compute difference between binary files}}

###############################################################################

write_file file3.dat "test file 3 (not a long line)."
fossil diff file3.dat

test diff-file3-1 {[normalize_result] eq {Index: file3.dat
==================================================================
--- file3.dat
+++ file3.dat
cannot compute difference between binary files}}

###############################################################################

write_file file4.dat "test file 4 (not a long line).\ntwo"
fossil diff file4.dat

test diff-file4-1 {[normalize_result] eq {Index: file4.dat
==================================================================
--- file4.dat
+++ file4.dat
cannot compute difference between binary files}}

###############################################################################

write_file file5.dat "[string repeat 0 16]\ntest file 5 (not a long line)."
fossil diff file5.dat

test diff-file5-1 {[normalize_result] eq {Index: file5.dat
==================================================================
--- file5.dat
+++ file5.dat
cannot compute difference between binary files}}

###############################################################################

write_file file6a.dat "{\n \"abc\": {\n  \"def\": false,\n  \"ghi\": false\n }\n}\n"
write_file file6b.dat "{\n \"abc\": {\n  \"def\": false,\n  \"ghi\": false\n },\n \"jkl\": {\n  \"mno\": {\n   \"pqr\": false\n  }\n }\n}\n"
fossil xdiff -y -W 16 file6a.dat file6b.dat
test diff-file-6-1 {[normalize_result] eq {========== file6a.dat ===== versus ===== file6b.dat =====
     1 {                       1 {
     2  "abc": {               2  "abc": {
     3   "def": false,         3   "def": false,
     4   "ghi": false          4   "ghi": false
                        >      5  },
                        >      6  "jkl": {
                        >      7   "mno": {
                        >      8    "pqr": false
                        >      9   }
     5  }                     10  }
     6 }                      11 }}}

###############################################################################

fossil rm file1.dat
fossil diff -v file1.dat

test diff-deleted-file-1 {[normalize_result] eq {DELETED  file1.dat
Index: file1.dat
==================================================================
--- file1.dat
+++ /dev/null
@@ -1,1 +0,0 @@
-test file 1 (one line no term).}}

###############################################################################

write_file file6.dat "test file 6 (one line no term)."
fossil add file6.dat

fossil diff -v file6.dat

test diff-added-file-1 {[normalize_result] eq {ADDED    file6.dat
Index: file6.dat
==================================================================
--- /dev/null
+++ file6.dat
@@ -0,0 +1,1 @@
+test file 6 (one line no term).}}

###############################################################################

test_cleanup
Added test/fake-editor.tcl.


































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# This is a fake text editor for use by tests.  To customize its behavior,
# set the FAKE_EDITOR_SCRIPT environment variable prior to evaluating this
# script file.  If FAKE_EDITOR_SCRIPT environment variable is not set, the
# default behavior will be used.  The default behavior is to append the
# process identifier and the current time, in seconds, to the file data.
#

if {![info exists argv] || [llength $argv] != 1} {
  error "Usage: \"[info nameofexecutable]\" \"[info script]\" <fileName>"
}

###############################################################################

proc makeBinaryChannel { channel } {
  fconfigure $channel -encoding binary -translation binary
}

proc readFile { fileName } {
  set channel [open $fileName RDONLY]
  makeBinaryChannel $channel
  set result [read $channel]
  close $channel
  return $result
}

proc writeFile { fileName data } {
  set channel [open $fileName {WRONLY CREAT TRUNC}]
  makeBinaryChannel $channel
  puts -nonewline $channel $data
  close $channel
  return ""
}

###############################################################################

set fileName [lindex $argv 0]

if {[regexp {^CYGWIN} $::tcl_platform(os)]} {
  # Under Cygwin, we get a Windows path but must access using the unix path.
  set fileName [exec cygpath --unix $fileName]
}

if {[file exists $fileName]} {
  set data [readFile $fileName]
} else {
  set data ""
}

###############################################################################

if {[info exists env(FAKE_EDITOR_SCRIPT)]} {
  #
  # NOTE: If an error is caught while evaluating this script, catch
  #       it and return, which will also skip writing the (possibly
  #       modified) content back to the original file.
  #
  set script $env(FAKE_EDITOR_SCRIPT)
  set code [catch $script error]

  if {$code != 0} {
    if {[info exists env(FAKE_EDITOR_VERBOSE)]} {
      if {[info exists errorInfo]} {
        puts stdout "ERROR ($code): $errorInfo"
      } else {
        puts stdout "ERROR ($code): $error"
      }
    }

    return
  }
} else {
  #
  # NOTE: The default behavior is to append the process identifier
  #       and the current time, in seconds, to the file data.
  #
  append data " " [pid] " " [clock seconds]
}

###############################################################################

writeFile $fileName $data
Added test/file1.test.








































































































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#
# Copyright (c) 2011 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# File utilities
#

test_setup

proc simplify-name {testname args} {
  set i 1
  foreach {path result} $args {
    fossil test-simplify-name $path
    test simplify-name-$testname.$i {$::RESULT=="\[$path\] -> \[$result\]"}
    incr i
  }
}

proc relative-name {testname args} {
  set i 1
  foreach {subdir path result} $args {
    fossil test-relative-name --chdir $subdir $path
    test relative-name-$testname.$i {$::RESULT==$result}
    incr i
  }
}

proc relative-tree-name {testname args} {
  set i 1
  foreach {subdir path result} $args {
    fossil test-tree-name --chdir $subdir $path
    test relative-tree-name-$testname.$i {$::RESULT==$result}
    incr i
  }
}

proc absolute-tree-name {testname args} {
  set i 1
  foreach {subdir path result} $args {
    fossil test-tree-name --chdir $subdir --absolute $path
    test absolute-tree-name-$testname.$i {$::RESULT==$result}
    incr i
  }
}

simplify-name 100 . . .// . .. .. ..///// ..
simplify-name 101 {} {} / / ///////// / ././././ .
simplify-name 102 x x /x /x ///x //x
simplify-name 103 a/b a/b /a/b /a/b a///b a/b ///a///b///// //a/b
simplify-name 104 a/b/../c/ a/c /a/b/../c /a/c /a/b//../c /a/c /a/b/..///c /a/c
simplify-name 105 a/b/../../x/y x/y /a/b/../../x/y /x/y
simplify-name 106 a/b/../../../x/y ../x/y /a/b/../../../x/y /../x/y
simplify-name 107 a/./b/.././../x/y x/y a//.//b//..//.//..//x//y/// x/y

if {$::tcl_platform(os)=="Windows NT"} {
  simplify-name 108 //?/a:/a/b a:/a/b //?/UNC/a/b //a/b //?/ {}
  simplify-name 109 \\\\?\\a:\\a\\b a:/a/b \\\\?\\UNC\\a\\b //a/b \\\\?\\ {}
}

# This is needed because we are now running outside of the Fossil checkout.
file mkdir file1; set savedPwd [pwd]; cd file1

# Those directories are only needed for the testcase being able to "--chdir" to it.
file mkdir test1
file mkdir test1/test2

relative-name 100 . . . test1 [pwd] .. test1 [pwd]/ .. test1 [pwd]/test ../test
relative-name 101 test1/test2 [pwd] ../.. test1/test2 [pwd]/ ../.. test1/test2 [pwd]/test ../../test
relative-name 102 test1 [pwd]/test ../test . [pwd]/file1 ./file1 . [pwd]/file1/file2 ./file1/file2
relative-name 103 . [pwd] .

relative-tree-name 100 . . file1 test1 [pwd] file1 test1 [pwd]/ file1 test1 [pwd]/test file1/test
relative-tree-name 101 test1/test2 [pwd] file1 test1/test2 [pwd]/ file1 test1/test2 [pwd]/test file1/test
relative-tree-name 102 test1 [pwd]/test file1/test . [pwd]/file1 file1/file1 . [pwd]/file1/file2 file1/file1/file2
relative-tree-name 103 . [pwd] file1

set dirname [file normalize [file dirname [pwd]]]

absolute-tree-name 100 . . $dirname test1 [pwd] [pwd] test1 [pwd]/ $dirname/file1 test1 [pwd]/test $dirname/file1/test
absolute-tree-name 101 test1/test2 [pwd] $dirname/file1 test1/test2 [pwd]/ $dirname/file1 test1/test2 [pwd]/test $dirname/file1/test
absolute-tree-name 102 test1 [pwd]/test $dirname/file1/test . [pwd]/file1 $dirname/file1/file1 . [pwd]/file1/file2 $dirname/file1/file1/file2
absolute-tree-name 103 . [pwd] $dirname/file1

catch {file delete test1/test2}
catch {file delete test1}

if {[info exists savedPwd]} {cd $savedPwd; unset savedPwd}

###############################################################################

test_cleanup
Added test/fileStat.th1.






































































































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<th1>
  proc doSomeTclSetup {} {
    #
    # NOTE: Copy repository file name to the Tcl interpreter.  This is
    #       done first (once) because it will be necessary for almost
    #       everything else later on.
    #
    tclInvoke set repository [repository]

    #
    # NOTE: Create some procedures in the Tcl interpreter to perform
    #       useful operations.  This could also do things like load
    #       packages, etc.
    #
    tclEval {
      #
      # NOTE: Returns an [exec] command for Fossil, using the provided
      #       sub-command and arguments, suitable for use with [eval]
      #       or [catch].
      #
      proc getFossilCommand { repository user args } {
        global env

        lappend result exec [info nameofexecutable]

        if {[info exists env(GATEWAY_INTERFACE)]} then {
          #
          # NOTE: This option is required when calling
          #       out to the Fossil executable from a
          #       CGI process.
          #
          lappend result -nocgi
        }

        eval lappend result $args

        if {[string length $repository] > 0} then {
          #
          # NOTE: This is almost certainly required
          #       when calling out to the Fossil
          #       executable on the server because
          #       there is almost never an open
          #       checkout.
          #
          lappend result -R $repository
        }

        if {[string length $user] > 0} then {
          lappend result -U $user
        }

        # th1Eval [list html $result<br>]

        return $result
      }
    }
  }

  proc getLatestTrunkCheckIn {} {
    tclEval {
      #
      # NOTE: Get the unique Id of the latest check-in on trunk.
      #
      return [lindex [regexp -line -inline -nocase -- \
          {^(?:uuid|hash):\s+([0-9A-F]{40}) } [eval [getFossilCommand \
          $repository "" info trunk]]] end]
    }
  }

  proc theSumOfAllFiles { id } {
    #
    # NOTE: Copy check-in Id value to the Tcl interpreter.
    #
    tclInvoke set id $id

    tclEval {
      set count 0

      foreach line [split [eval [getFossilCommand \
          $repository "" artifact $id]] \n] {
        #
        # NOTE: Is this an "F" (file) card?
        #
        if {[string range $line 0 1] eq "F "} then {
          incr count
        }
      }

      return $count
    }
  }

  doSomeTclSetup; # perform some extra setup for the Tcl interpreter.

  set checkIn [getLatestTrunkCheckIn]
  set totalFiles [theSumOfAllFiles $checkIn]
</th1>

<br />
As of trunk check-in <th1>decorate \[$checkIn\]</th1>, this
repository contains <th1>html $totalFiles</th1> files.
<br />
Added test/fileage-test-1.wiki.














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This page contains URLs for file-age computations that have given
trouble in the past.  Shift-click on on the links, one-by-one, to verify
that the current implementation works correctly:

  *  [/fileage?name=c9df0dcdaa402] - Verify that the many
     execute permission changes that occurred about 24 hours before
     check-in c9df0dcdaa402 do not appear as file changes.

  *  [/tree?ci=c9df0dcdaa40&mtime=0&type=tree] - Verify that all
     three skin files (css.txt, footer.txt, and header.txt) appear
     in all of the skin/*/ folders.

  *  On both of the above, check for excessive computation time.
Added test/glob.test.






























































































































































































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#
# Copyright (c) 2013 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test glob pattern parsing
#

test_setup ""

proc glob-parse {testname args} {
  set i 1
  foreach {pattern string result} $args {
    fossil test-glob $pattern $string
    test glob-parse-$testname.$i {$::RESULT eq $result}
    incr i
  }
}

glob-parse 100 test test [string map [list \r\n \n] \
{SQL expression: (x GLOB 'test')
pattern[0] = [test]
1 1 test}]

glob-parse 101 "one two" one [string map [list \r\n \n] \
{SQL expression: (x GLOB 'one' OR x GLOB 'two')
pattern[0] = [one]
pattern[1] = [two]
1 1 one}]

glob-parse 102 t* test [string map [list \r\n \n] \
{SQL expression: (x GLOB 't*')
pattern[0] = [t*]
1 1 test}]

glob-parse 103 "o* two" one [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*' OR x GLOB 'two')
pattern[0] = [o*]
pattern[1] = [two]
1 1 one}]

glob-parse 104 {"o* two" "three four"} "one two" [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o* two' OR x GLOB 'three four')
pattern[0] = [o* two]
pattern[1] = [three four]
1 1 one two}]

glob-parse 105 {"o* two" "three four"} "two one" [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o* two' OR x GLOB 'three four')
pattern[0] = [o* two]
pattern[1] = [three four]
0 0 two one}]

glob-parse 106 "\"o*\ntwo\" \"three\nfour\"" "one\ntwo" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*
two' OR x GLOB 'three
four')
pattern[0] = [o*
two]
pattern[1] = [three
four]
1 1 one
two}]

glob-parse 107 "\"o*\ntwo\" \"three\nfour\"" "two\none" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*
two' OR x GLOB 'three
four')
pattern[0] = [o*
two]
pattern[1] = [three
four]
0 0 two
one}]

glob-parse 108 "\"o*\rtwo\" \"three\rfour\"" "one\rtwo" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*
two' OR x GLOB 'three
four')
pattern[0] = [o*
two]
pattern[1] = [three
four]
1 1 one
two}]

glob-parse 109 "\"o*\rtwo\" \"three\rfour\"" "two\rone" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*
two' OR x GLOB 'three
four')
pattern[0] = [o*
two]
pattern[1] = [three
four]
0 0 two
one}]

glob-parse 110 "'o*\ntwo' 'three\nfour'" "one\ntwo" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*
two' OR x GLOB 'three
four')
pattern[0] = [o*
two]
pattern[1] = [three
four]
1 1 one
two}]

glob-parse 111 "'o*\ntwo' 'three\nfour'" "two\none" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*
two' OR x GLOB 'three
four')
pattern[0] = [o*
two]
pattern[1] = [three
four]
0 0 two
one}]

glob-parse 112 "\"'o*' 'two'\" \"'three' 'four'\"" "'one' 'two'" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB '''o*'' ''two''' OR x GLOB '''three'' ''four''')
pattern[0] = ['o*' 'two']
pattern[1] = ['three' 'four']
1 1 'one' 'two'}]

glob-parse 113 "\"'o*' 'two'\" \"'three' 'four'\"" "two one" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB '''o*'' ''two''' OR x GLOB '''three'' ''four''')
pattern[0] = ['o*' 'two']
pattern[1] = ['three' 'four']
0 0 two one}]

glob-parse 114 o*,two one [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*' OR x GLOB 'two')
pattern[0] = [o*]
pattern[1] = [two]
1 1 one}]

glob-parse 115 "o*,two three,four" "one two" [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*' OR x GLOB 'two' OR x GLOB 'three' OR x GLOB 'four')
pattern[0] = [o*]
pattern[1] = [two]
pattern[2] = [three]
pattern[3] = [four]
1 1 one two}]

glob-parse 116 'o*,two' one [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*,two')
pattern[0] = [o*,two]
0 0 one}]

glob-parse 117 'o*,two' one,two [string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*,two')
pattern[0] = [o*,two]
1 1 one,two}]

glob-parse 118 "'o*,two three,four'" "one two three,four" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*,two three,four')
pattern[0] = [o*,two three,four]
0 0 one two three,four}]

glob-parse 119 "'o*,two three,four'" "one,two three,four" \
[string map [list \r\n \n] \
{SQL expression: (x GLOB 'o*,two three,four')
pattern[0] = [o*,two three,four]
1 1 one,two three,four}]

###############################################################################

test_cleanup
Added test/graph-test-1.wiki.























































































































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<title>Graph Test One</title>

This page contains examples a list of URLs of timelines with
interesting graphs.  Click on all URLs, one by one, to verify
the correct operation of the graph drawing logic.

  *  <a href="../../../timeline?n=20&y=ci&b=2010-11-08" target="testwindow">
     20-element timeline, check-ins only, before 2010-11-08</a>
  *  <a href="../../../timeline?n=20&y=ci&b=2010-11-08&ng" target="testwindow">
     20-element timeline, check-ins only, no graph, before 2010-11-08</a>
  *  <a href="../../../timeline?n=20&y=ci&b=2010-11-08&fc" target="testwindow">
     20-element timeline, check-ins only, file changes, before 2010-11-08</a>
  *  <a href="../../../timeline?n=40&y=ci&b=2010-11-08" target="testwindow">
     40-element timeline, check-ins only, before 2010-11-08</a>
  *  <a href="../../../timeline?n=1000&y=ci&b=2010-11-08" target="testwindow">
     1000-element timeline, check-ins only, before 2010-11-08</a>
  *  <a href="../../../timeline?n=10&c=2010-11-07T10:23:00" target="testwindow">
     10-elements circa 2010-11-07 10:23:00, with dividers</a>
  *  <a href="../../../timeline?n=10&c=2010-11-07T10:23:00&nd"
     target="testwindow">
     10-elements circa 2010-11-07 10:23:00, without dividers</a>
  *  <a href="../../../timeline?f=3ea66260b5555" target="testwindow">
     Parents and children of check-in 3ea66260b5555</a>
  *  <a href="../../../timeline?d=e5fe4164f74a7576&p=e5fe4164f74a7576&n=3"
     target="testwindow">multiple merge descenders from the penultimate node.
     </a>
  *  <a href="../../../timeline?y=ci&a=2010-12-20" target="testwindow">
     multiple branch risers.</a>
  *  <a href="../../../timeline?y=ci&a=2010-12-20&n=18" target="testwindow">
     multiple branch risers, n=18.</a>
  *  <a href="../../../timeline?y=ci&a=2010-12-20&n=9" target="testwindow">
     multiple branch risers, n=9.</a>
  *  <a href="../../../timeline?r=experimental&n=0" target="testwindow">
     Experimental branch with related check-ins.</a>
  *  <a href="../../../timeline?r=experimental&mionly&n=0" target="testwindow">
     Experimental branch with merge-ins only.</a>
  *  <a href="../../../timeline?t=experimental&n=0" target="testwindow">
     Experimental branch check-ins only.</a>
  *  <a href="../../../timeline?r=release&n=0" target="testwindow">
     Check-ins tagged "release" and related check-ins</a>
  *  <a href="../../../timeline?r=release&mionly&n=0" target="testwindow">
     Check-ins tagged "release" and merge-ins</a>
  *  <a href="../../../timeline?t=release&n=0" target="testwindow">
     Only check-ins tagged "release"</a>
  *  <a href="../../../finfo?name=Makefile" target="testwindow">
     History of source file "Makefile".</a>
  *  <a href="../../../timeline?n=20&a=1970-01-01" target="testwindow">
     20 elements after 1970-01-01.</a>
  *  <a href="../../../timeline?n=100000000&y=ci" target="testwindow">
     All check-ins - a huge graph.</a>
  *  <a href="../../../timeline?f=8dfed953f7530442" target="testwindow">
     This malformed commit has a
     merge parent which is not a valid checkin.</a>
  *  <a href="../../../timeline?from=e663bac6f7&to=a298a0e2f9&shortest"
     target="testwindow">
     From e663bac6f7 to a298a0e2f9 by shortest path.</a>
  *  <a href="../../../timeline?from=e663bac6f7&to=a298a0e2f9"
     target="testwindow">
     From e663bac6f7 to a298a0e2f9 without merge links.</a>
  *  <a href="../../../timeline?me=e663bac6f7&you=a298a0e2f9"
     target="testwindow">
     Common ancestor path of e663bac6f7 to a298a0e2f9.</a>
  *  <a href="../../../timeline?f=65dd90fb95a2af55" target="testwindow">
     Merge on the same branch does not result in a leaf.
     </a>
  *  <a href="../../../timeline?c=20015206bc"
     target="testwindow">
     This timeline has a hidden commit.</a> Click Unhide to reveal.
  *  <a href="../../../timeline?y=ci&n=15&b=2a4e4cf03e"
     target="testwindow">Isolated check-ins.</a>
  *  <a href="../../../timeline?b=0fa60142&n=50"
     target="testwindow">Single branch raiser from bottom of page
     up to checkins 057e4b and d3cc6d</a>
  *  <a href="../../../timeline?a=68194175&n=2"
     target="testwindow">Branch riser comes from the bottom of the screen</a>
  *  <a href="../../../timeline?a=2bc3cfeb&n=5"
     target="testwindow">Branch risers comes from the bottom of the
     screen, not from the andygoth-crlf branch.</a>
  *  <a href="../../../timeline?a=b8c7af5b&n=12"
     target="testwindow">Check-in 2de15c8e has merge arrows from two
     different trunk check-ins.  One of the merge risers also branches
     to check-in ea7f3297</a>
  *  <a href="../../../timeline?b=ae8709e2&n=25" target="testwindow">
     Cherrypick merge arrows</a>
  *  <a href="../../../timeline?r=branch-1.37" target="testwindow">Branch
     1.37 with cherry-pick merges from trunk.</a>
  *  <a href="../../../timeline?f=68bd2e7bedb8d05a" target="testwindow">
     Single check-in takes both a full merge and a cherrypick merge</a>
  *  <a href="../../../timeline?b=dc81ac70&n=14" target="testwindow">
     Mixed merge arrow, partly fully and partly cherrypick</a>
  *  <a href="../../../timeline?b=dc81ac70&n=13" target="testwindow">
     Mixed merge arrow to bottom of screen.</a>
  *  <a href="../../../timeline?b=4471e93c&n=12" target="testwindow">
     A fork on trunk keeps the longest chain of child nodes directly
     above the fork and the shorter chain off to the side.</a>
  *  <a href="../../../timeline?r=jan-manifest-tags&n=50" target="testwindow">
     The "jan-manifest-tags" branch containing a non-trunk fork</a>
  *  <a href="../../../timeline?r=diff-eolws&n=50" target="testwindow">
     The "diff-eolws" branch containing a non-trunk fork</a>
  *  <a href="../../../timeline?n=all&forks" target="testwindow">
     All forks</a>
  *  <a href="../../../leaves" target="testwindow">All leaves</a>

External:

  *  <a href="http://www.sqlite.org/src/timeline?c=2010-09-29&nd"
     target="testwindow">Timewarp due to a mis-configured system clock.</a>
  *  <a href="http://core.tcl.tk/tk/finfo?name=tests/id.test"
     target="testwindow">Show all three separate deletions of "id.test".
     (Scroll down for the third deletion.)
  *  <a href='http://core.tcl.tk/tk/timeline?y=ci&b=2015-03-07'
     target='testwindow'>Merge arrows to the left and to the right</a>
  *  <a href='http://core.tcl.tk/tk/timeline?y=ci&b=2015-03-07&railpitch=13'
     target='testwindow'>Previous, with a scrunched graph</a>
  *  <a href='http://core.tcl.tk/tk/timeline?y=ci&b=2015-03-07&railpitch=11'
     target='testwindow'>Previous, with a severely scrunched graph</a>
  *  <a href="https://sqlite.org/src/timeline?r=wal&n=1000"
     target='testwindow'>The "wal" branch SQLite repository, containing
     multiple non-trunk forks.</a>
Added test/graph-test-2.md.








































































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# Graph Test Cases

There are test cases for the merge-riser coalescing logic that
was added on 2020-06-08.

  *  [e19cfba5373369b](/info/e19cfba5373369b?diff=0)
  *  [c779b6890464cae](/info/c779b6890464cae?diff=0)
  *  [eed3946bd92a499](/info/eed3946bd92a499?diff=0)
  *  [9e1fa626e47f147](/info/9e1fa626e47f147?diff=0)
  *  [68bd2e7bedb8d05](/info/68bd2e7bedb8d05?diff=0)
  *  [8ac66ef33b464d2](/info/8ac66ef33b464d2?diff=0)
  *  [ef6979eac9abded](/info/ef6979eac9abded?diff=0)
  *  [7766e689926c703](/info/7766e689926c703?diff=0)
  *  [642f4dcfa24f1f9](/info/642f4dcfa24f1f9?diff=0)
  *  [3ea66260b5555d2](/info/3ea66260b5555d2?diff=0)
  *  [66ae70a54b20656](/info/66ae70a54b20656?diff=0)
  *  [b0f2a0ac53926c9](/info/b0f2a0ac53926c9?diff=0)
  *  [303e7af7c31866c](/info/303e7af7c31866c?diff=0)
  *  [b31afcc2cab1dc4](/info/b31afcc2cab1dc4?diff=0)
  *  [1a164e5fb76a46b](/info/1a164e5fb76a46b?diff=0)
  *  [f325b2343e6a18f](/info/f325b2343e6a18f?diff=0)
  *  [2d75e87b760c0a9](/info/2d75e87b760c0a9?diff=0)
  *  [76442af7e13267b](/info/76442af7e13267b?diff=0)


The list above was generated by the following script:

~~~~~
.mode list
SELECT printf('  *  [%s](/info/%s?diff=0)', hash, hash) FROM (
  SELECT count(*) AS cnt, sum(cherrypick=1) AS cp, sum(cherrypick=0) AS n, 
      (SELECT substr(uuid,1,15) FROM blob WHERE rid=cid) AS hash
    FROM (
      SELECT cid, 0 AS cherrypick FROM plink WHERE NOT isprim
      UNION ALL
      SELECT childid, 1 FROM cherrypick
    )
   GROUP BY cid
   HAVING (cp>0 AND n>0) OR cp>3 OR n>2
   ORDER BY cnt
);
~~~~~

Similar links to the SQLite repository:

  *  [7f72fc4f47445a2](https://sqlite.org/src/info/7f72fc4f47445a2?diff=0)
  *  [db2935473eab91c](https://sqlite.org/src/info/db2935473eab91c?diff=0)
  *  [a56506b9387a067](https://sqlite.org/src/info/a56506b9387a067?diff=0)
  *  [d59567dda231e7f](https://sqlite.org/src/info/d59567dda231e7f?diff=0)
  *  [2b750b0f74e5a11](https://sqlite.org/src/info/2b750b0f74e5a11?diff=0)
  *  [c697d2f83c2d8ea](https://sqlite.org/src/info/c697d2f83c2d8ea?diff=0)
  *  [b330c7ff6fd1230](https://sqlite.org/src/info/b330c7ff6fd1230?diff=0)
  *  [746fcd2fd412ddc](https://sqlite.org/src/info/746fcd2fd412ddc?diff=0)
  *  [71866b367f32b5a](https://sqlite.org/src/info/71866b367f32b5a?diff=0)
  *  [05418b2a4a6e6a9](https://sqlite.org/src/info/05418b2a4a6e6a9?diff=0)

Generated by a very similar script:

~~~~~
SELECT printf('  *  [%s](https://sqlite.org/src/info/%s?diff=0)', hash, hash) FROM (
  SELECT count(*) AS cnt, sum(cherrypick=1) AS cp, sum(cherrypick=0) AS n, 
      (SELECT substr(uuid,1,15) FROM blob WHERE rid=cid) AS hash
    FROM (
      SELECT cid, 0 AS cherrypick FROM plink WHERE NOT isprim
      UNION ALL
      SELECT childid, 1 FROM cherrypick
    )
   GROUP BY cid
   HAVING (cp>0 AND n>0) OR cp>2 OR n>2
   ORDER BY cnt
);
~~~~~
Added test/json.test.





























































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test JSON Support
#

# Make sure we have a build with the json command at all and that it
# is not stubbed out. This assumes the current (as of 2016-01-27)
# practice of eliminating all trace of the fossil json command when
# not configured. If that changes, these conditions might not prevent
# the rest of this file from running.
fossil test-th-eval "hasfeature json"

if {[normalize_result] ne "1"} {
  puts "Fossil was not compiled with JSON support."
  test_cleanup_then_return
}

# We need a JSON parser to effectively test the JSON produced by
# fossil. It looks like the one from tcllib is exactly what we need.
# On ActiveTcl, add it with teacup. On other platforms, YMMV.
# teacup install json
# teacup install json::write
if {[catch {package require json}] != 0} then {
  puts {
The "json" package for Tcl is not available.
Please see: https://core.tcl-lang.org/tcllib
}
  test_cleanup_then_return
}

proc json2dict {txt} {
  set rc [catch {::json::json2dict $txt} result options]
  if {$rc != 0} {
    protOut "JSON ERROR: $result"
    return {}
  }
  return $result
}

# and that the json itself smells ok and has the expected API error code in it
fossil json -expectError
set JR [json2dict $RESULT]
if {$JR eq ""} {
  puts "Fossil was not compiled with JSON support (bad JSON)."
  test_cleanup_then_return
}
test json-1 {[dict exists $JR resultCode]
             && [dict get $JR resultCode] in "FOSSIL-3002 FOSSIL-4102"}

# Use the CLI interface to execute a JSON command. Sets the global
# RESULT to the response text, and JR to a Tcl dict conversion of the
# response body.
#
# Returns "200" or "500".
proc fossil_json {args} {
  global RESULT JR
  uplevel 1 fossil json {*}$args
  set JR [json2dict $RESULT]
  return "200"
}

# Use the HTTP interface to GET a JSON API URL. Sets the globals
# RESULT to the HTTP response body, and JR to a Tcl dict conversion of
# the response body.
#
# Returns the status code from the HTTP header.
proc fossil_http_json {url {cookie "Muppet=Monster"} args} {
  global RESULT JR
  set request "GET $url HTTP/1.1\r\nHost: localhost\r\nUser-Agent: Fossil-http-json\r\nCookie: $cookie"
  set RESULT [fossil_maybe_answer $request http {*}$args --ipaddr 127.0.0.1]
  set head ""; set body ""; set status "--NO_MATCH--"
  regexp {(?w)(.*)^\s*$(.*)} $RESULT dummy head body
  regexp {^HTTP\S+\s+(\d\d\d)\s+(.*)$} $head dummy status msg
  if {$status eq "200"} {
    set JR [json2dict $body]
  }
  return $status
}


# Use the HTTP interface to POST a JSON API URL. Sets the globals
# RESULT to the HTTP response body, and JR to a Tcl dict conversion of
# the response body.
#
# Returns the status code from the HTTP header.
proc fossil_post_json {url data {cookie "Muppet=Monster"} args} {
  global RESULT JR

  # set up a full GET or POST HTTP request
  set len [string length $data]
  if {$len > 0} {
    set request [subst {POST $url HTTP/1.0\r
Host: localhost\r
User-Agent: Fossil-Test\r
Cookie: $cookie\r
Content-Type: application/json
Content-Length $len
\r
$data}]
  } else {
    set request [subst {GET $url HTTP/1.0\r
Host: localhost\r
User-Agent: Fossil-Test\r
Cookie: $cookie\r
\r
}]
  }

  # handle the actual request
  flush stdout
  #exec $fossilexe
  set RESULT [fossil_maybe_answer $request http {*}$args --ipaddr 127.0.0.1]

  # separate HTTP headers from body
  set head ""; set body ""; set status "--NO_MATCH--"
  regexp {(?w)(.*)^\s*$(.*)} $RESULT dummy head body
  regexp {^HTTP\S+\s+(\d\d\d)\s+(.*)$} $head dummy status msg
  if {$status eq "200"} {
    if {[string length $body] > 0} {
      set JR [json2dict $body]
    } else {
      set JR ""
    }
  }
  return $status
}


# Inspect a dict for keys it must have and keys it must not have
proc test_dict_keys {testname D okfields badfields} {
  if {$D eq ""} {
    test $testname-validJSON 0
    return
  }
  set i 1
  foreach f $okfields {
    test "$testname-$i" {[dict exists $D $f]}
    incr i
  }
  foreach f $badfields {
    test "$testname-$i" {![dict exists $D $f]}
    incr i
  }
}

# Inspect the envelope part of a returned JSON structure to confirm
# that it has specific fields and that it lacks specific fields.
proc test_json_envelope {testname okfields badfields} {
  test_dict_keys $testname $::JR $okfields $badfields
}

# Inspect the envelope of a normal successful result
proc test_json_envelope_ok {testname} {
  test_json_envelope $testname [concat fossil timestamp command procTimeUs \
  procTimeMs payload] [concat resultCode resultText]
}

# Inspect the payload of a successful result to confirm that it has
# specific fields and that it lacks specific fields.
proc test_json_payload {testname okfields badfields} {
  test_dict_keys $testname [dict get $::JR payload] $okfields $badfields
}

#### VERSION AKA HAI

# The JSON API generally assumes we have a respository, so let it have one.

# Set FOSSIL_USER to ensure consistent results in "json user list"
set _fossil_user ""
if [info exists env(FOSSIL_USER)] {
  set _fossil_user $env(FOSSIL_USER)
}
set ::env(FOSSIL_USER) "JSON-TEST-USER"

test_setup

# Stop backoffice from running during this test as it can cause hangs.
fossil settings backoffice-disable 1

# Check for basic envelope fields in the result with an error
fossil_json -expectError
test_json_envelope json-enverr [concat resultCode fossil timestamp \
resultText command procTimeUs procTimeMs] {}
test json-enverr-rc-1 {[dict get $JR resultCode] eq "FOSSIL-3002"}


# Check for basic envelope fields in the result with a successful
# command
set HAIfields [concat manifestUuid manifestVersion manifestDate \
manifestYear releaseVersion releaseVersionNumber \
resultCodeParanoiaLevel jsonApiVersion]

fossil_json HAI
test_json_envelope_ok json-HAI
test_json_payload json-HAI $HAIfields {}
test json-HAI-api {[dict get $JR payload jsonApiVersion] >= 20120713}

# Check for basic envelope fields in a HTTP result with a successful
# command
fossil_http_json /json/HAI
test_json_envelope_ok json-http-HAI
test_json_payload json-http-HAI $HAIfields {}
test json-http-HAI-api {[dict get $JR payload jsonApiVersion] >= 20120713}

fossil_json version
test_json_envelope_ok json-version
test_json_payload json-version $HAIfields {}
test json-version-api {[dict get $JR payload jsonApiVersion] >= 20120713}

#### ARTIFACT

# sha1 of 0 bytes and a file to match in a commit
set UUID_empty da39a3ee5e6b4b0d3255bfef95601890afd80709
# sha3 of 0 bytes and a file to match in a commit
set UUID_empty_64 a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a
write_file empty ""
fossil add empty
fossil ci -m "empty file"

# json artifact (checkin)
fossil_json [concat artifact tip]
test_json_envelope_ok json-artifact-checkin-env
test json-artifact-checkin {[dict get $JR payload type] eq "checkin"}
test_json_payload json-artifact \
[concat type uuid isLeaf timestamp user comment parents tags files] {}

# json artifact (file)
fossil_json [concat artifact $UUID_empty_64]
test_json_envelope_ok json-artifact-file-env
test json-artifact-file {[dict get $JR payload type] eq "file"}
test_json_payload json-artifact [concat type uuid size checkins] {}

# json artifact (wiki)
fossil wiki create Empty <<"-=BLANK=-"
fossil_json wiki get Empty
test json-wiki-get {[dict get $JR payload name] eq "Empty"}
set uuid [dict get $JR payload uuid]
fossil_json artifact $uuid
test_json_envelope_ok json-artifact-wiki-env
test json-artifact-wiki {[dict get $JR payload type] eq "wiki"}
test_json_payload json-artifact-wiki [list type uuid artifact] {}
set artifact [dict get $JR payload artifact]
test_dict_keys json-artifact-wiki-artifact $artifact \
  [list name uuid user timestamp size] {}
# name, uuid, parent?, user, timestamp, size?, content?


#### AUTHENTICATION
fossil_json anonymousPassword
test_json_envelope_ok json-anonymousPassword-env
test_json_payload json-anonymousPassword {seed password} {}
set seed [dict get $JR payload seed]
set pass [dict get $JR payload password]

write_file anon-1 [subst {
{
  "command":"login",
  "payload":{
    "name":"anonymous",
    "anonymousSeed":$seed,
    "password":"$pass"
  }
}
}]
fossil_json --json-input anon-1
test_json_envelope_ok json-login-a-env
test_json_payload json-login-a {authToken name capabilities loginCookieName} {}
set AuthAnon [dict get $JR payload]
proc test_hascaps {testname need caps} {
  foreach n [split $need {}] {
    test $testname-$n {[string first $n $caps] >= 0}
  }
}
test_hascaps json-login-c "hz" [dict get $AuthAnon capabilities]

fossil user new U1 User-1 Uone
fossil user capabilities U1 s
write_file u1 {
{
  "command":"login",
  "payload":{
    "name":"U1",
    "password":"Uone"
  }
}
}
fossil_json --json-input u1
test_json_envelope_ok json-login-u1-env
test_json_payload json-login-u1 {authToken name capabilities loginCookieName} {}
set AuthU1 [dict get $JR payload]
test_hascaps json-login-c "s" [dict get $AuthU1 capabilities]

set U1Cookie [dict get $AuthU1 loginCookieName]=[regsub -all {[/]} [dict get $AuthU1 authToken] {%2F} ]
set AnonCookie [dict get $AuthAnon loginCookieName]=[regsub -all {[/]} [dict get $AuthAnon authToken] {%2F} ]

# json cap
# The CLI user has all rights, and no auth token affects that. This
# is consistent with the rest of the fossil CLI, and with the
# pragmatic argument that using the CLI implies physical access to
# the repo file itself, which can be taunted with many tools
# including raw SQLite which will also ignore authentication.
write_file anon-2 [subst {
  {"command":"cap",
   "authToken":"[dict get $AuthAnon authToken]"
  }
}]
fossil_json --json-input anon-2
test_json_envelope_ok json-cap-env
test json-cap-CLI {[dict get $JR payload permissionFlags setup]}

# json cap via POST with authToken in request envelope
set anon2 [read_file anon-2]
fossil_post_json "/json/cap" $anon2
test json-cap-POSTenv-env-0 {[string length $JR] > 0}
test_json_envelope_ok json-cap-POSTenv-env
if {[catch {test json-cap-POSTenv-name \
    {[dict get $JR payload name] eq "anonymous"} knownBug} jerr]} then {
  test json-cap-POSTenv-name-threw 0
  protOut "CAUGHT: $jerr"
}
test json-cap-POSTenv-notsetup {![dict get $JR payload permissionFlags setup]}


# json cap via GET with authToken in Cookie header
fossil_post_json "/json/cap" {} $AnonCookie
test json-cap-GETcookie-env-0 {[string length $JR] > 0}
test_json_envelope_ok json-cap-GETcookie-env-0
if {[catch {test json-cap-GETcookie-name-0 \
    {[dict get $JR payload name] eq "anonymous"}} jerr]} then {
  test json-cap-GETcookie-name-0-threw 0
  protOut "CAUGHT: $jerr"
}
test json-cap-GETcookie-notsetup-0 {![dict get $JR payload permissionFlags setup]}


# json cap via GET with authToken in a parameter
fossil_post_json "/json/cap?authToken=[dict get $AuthAnon authToken]" {}
test json-cap-GETcookie-env-1 {[string length $JR] > 0}
test_json_envelope_ok json-cap-GETcookie-env-1
if {[catch {test json-cap-GETcookie-name-1 \
    {[dict get $JR payload name] eq "anonymous"}} jerr]} then {
  test json-cap-GETcookie-name-1-threw 0
  protOut "CAUGHT: $jerr"
}
test json-cap-GETcookie-notsetup-1 {![dict get $JR payload permissionFlags setup]}


# whoami
# via CLI with no auth token supplied
fossil_json whoami
test_json_envelope_ok json-whoami-cli-env
test_json_payload json-whoami-cli {name capabilities} {}
test json-whoami-cli-name {[dict get $JR payload name] eq "nobody"}
test_hascaps json-whoami-cli-cap "gjorz" [dict get $JR payload capabilities]

#### BRANCHES
# json branch list
fossil_json branch list
test_json_envelope_ok json-branch-list-env
test_json_payload json-branch-list {range current branches} {}
test json-branch-list-cur {[dict get $JR payload current] eq "trunk"}
test json-branch-list-cnt {[llength [dict get $JR payload branches]] == 1}
test json-branch-list-val {[dict get $JR payload branches] eq "trunk"}

# json branch create
fossil_json branch create alpha --basis trunk
test_json_envelope_ok json-branch-create-env
test_json_payload json-branch-create {name basis rid uuid isPrivate} {}


#### CONFIG
# json config get AREA
# AREAs are skin ticket project all skin-backup
foreach a [list skin ticket project all skin-backup] {
  fossil_json config get $a
  test_json_envelope_ok json-config-$a-env
  # payload depends on specific area and may be completely empty
}

#### DIFFS
# json diff v1 v2

write_file fish {
ABCD goldfish
}
fossil add fish
fossil ci -m "goldfish"
fossil_json finfo fish
set fishHist [dict get $JR payload checkins]
set fishV1 [dict get [lindex $fishHist 0] uuid]

write_file fish {
ABCD goldfish
LMNO goldfish
}
fossil ci -m "goldfish"
fossil_json finfo fish
set fishHist [dict get $JR payload checkins]
set fishV2 [dict get [lindex $fishHist 0] uuid]

test fossil-diff-setup {$fishV1 ne $fishV2}
fossil_json diff $fishV1 $fishV2
test_json_envelope_ok json-diff-env
test_json_payload json-diff {from to diff} {}
test json-diff-v1 {[dict get $JR payload from] eq $fishV1}
test json-diff-v2 {[dict get $JR payload to] eq $fishV2}
set diff [dict get $JR payload diff]
test json-diff-diff {[string first "+LMNO goldfish" $diff] >= 0}
protOut [dict get $JR payload diff]


#### DIRECTORY LISTING
# json dir DIRNAME
fossil_json dir
test_json_envelope_ok json-dir-env
test_json_payload json-dir {name entries} {}

#### FILE INFO
# json finfo FILENAME
fossil_json finfo empty
test_json_envelope_ok json-finfo-env
test_json_payload json-finfo {name checkins} {}

#### QUERY
# json query SQLCODE
fossil_json query {"SELECT * FROM reportfmt"}
test_json_envelope_ok json-query-env
test_json_payload json-query {columns rows} {}

#### STATS
# json stat
fossil_json stat
test_json_envelope_ok json-stat-env
test_json_payload json-stat {repositorySize ageDays ageYears projectCode compiler sqlite} \
{blobCount deltaCount uncompressedArtifactSize averageArtifactSize maxArtifactSize \
compressionRatio checkinCount fileCount wikiPageCount ticketCount}

fossil_json stat -f
test_json_envelope_ok json-stat-env
test_json_payload json-stat {repositorySize \
blobCount deltaCount uncompressedArtifactSize averageArtifactSize maxArtifactSize \
compressionRatio checkinCount fileCount wikiPageCount ticketCount \
ageDays ageYears projectCode compiler sqlite} {}


#### STATUS
# NOTE: Local checkout required
# json status
fossil_json status
test_json_envelope_ok json-status-env
test_json_payload json-status {repository localRoot checkout files errorCount} {}

#### TAGS

# json tag add NAME CHECKIN VALUE
fossil_json tag add blue trunk green
test_json_envelope_ok json-tag-add-env
test_json_payload json-tag-add {name value propagate raw appliedTo} {}


# json tag cancel NAME CHECKIN
fossil_json tag add cancel alpha
test_json_envelope_ok json-tag-cancel-env
# DOCBUG? Doc says no payload.
test_json_payload json-tag-cancel {name value propagate raw appliedTo} {}

# json tag find NAME
fossil_json tag find alpha
test_json_envelope_ok json-tag-find-env
test_json_payload json-tag-find {name raw type limit artifacts} {}
test json-tag-find-count {[llength [dict get $JR payload artifacts]] >= 1}

# json tag list CHECKIN
fossil_json tag list
test_json_envelope_ok json-tag-list-env
test_json_payload json-tag-list {raw includeTickets tags} {}
test json-tag-list-count {[llength [dict get $JR payload tags]] >= 2}


#### TICKETS
# API Docs say not yet defined, so it isn't quite fair to mark this
# category as TODO for the test cases...

#### TICKET REPORTS

# json report get NUMBER
fossil_json report get 1
test_json_envelope_ok json-report-get-env
test_json_payload json-report-get {report owner title timestamp columns sqlCode} {}

# json report list
fossil_json report list
test_json_envelope_ok json-report-list-env
#test_json_payload json-report-list {raw includeTickets tags} {}
test json-report-list-count {[llength [dict get $JR payload]] >= 1}


# json report run NUMBER
fossil_json report run 1
test_json_envelope_ok json-report-run-1-env
test_json_payload json-report-list {report title sqlcode columnNames tickets} {}
test json-report-list-count {[llength [dict get $JR payload columnNames]] >= 7}
test json-report-list-count {[llength [dict get $JR payload tickets]] >= 0}


#### TIMELINE

# json timeline checkin
fossil_json timeline checkin
test_json_envelope_ok json-timeline-checkin-env
test_json_payload json-timeline-checkin {limit timeline} {}
set i 0
foreach t [dict get $JR payload timeline] {
  # parents appears only for entries that have a parent
  # files appears only if requested by the --files parameter
  test_dict_keys json-timeline-checkin-$i $t {type uuid timestamp comment user isLeaf tags} {}
  incr i
}

# json timeline ci
# removed from documentation
#fossil_json timeline ci
#test json-timeline-ci {[dict get $JR resultCode] ne "FOSSIL-1102"} knownBug
#test_json_payload json-timeline-ci {limit timeline} {}

# json timeline ticket
fossil_json timeline ticket
test_json_envelope_ok json-timeline-ticket-env
test_json_payload json-timeline-ticket {limit timeline} {}

# json timeline wiki
fossil_json timeline wiki
test_json_envelope_ok json-timeline-wiki-env
test_json_payload json-timeline-wiki {limit timeline} {}


#### USER MANAGEMENT

# json user get
foreach u [list nobody anonymous reader developer U1] {
  fossil_json user get $u
  test_json_envelope_ok json-user-get-$u-env
  test_json_payload json-user-get-$u {uid name capabilities info timestamp} {}
}

# json user list
fossil_json user list
test_json_envelope_ok json-user-list-env
set i 0
foreach u [dict get $JR payload] {
  test_dict_keys json-user-list-$i $u {uid name capabilities info timestamp} {}
  incr i
}

# json user save
fossil_json user save --uid -1 --name U2 --password Utwo
test_json_envelope_ok json-user-save-env
test_json_payload json-user-save {uid name capabilities info timestamp} {}


# DOCBUG? Doc says payload is "same as /json/user/get" but actual
# result was an array of one user similar to /json/user/list.
#set i 0
#foreach u [dict get $JR payload] {
#  test_dict_keys json-user-save-$i $u {uid name capabilities info timestamp} {}
#  incr i
#}
#test json-user-save-count {$i == 1}



#### WIKI

# wiki list
fossil_json wiki list
test_json_envelope_ok json-wiki-list-env
set pages  [dict get $JR payload]
test json-wiki-1 {[llength $pages] == 1}
test json-wiki-2 {[lindex  $pages 0] eq "Empty"}
fossil_json wiki list --verbose
set pages  [dict get $JR payload]
test json-wiki-verbose-1 {[llength $pages] == 1}
test_dict_keys json-wiki-verbose-pages [lindex $pages 0] [list name uuid user timestamp size] {}

# wiki get
fossil_json wiki get Empty
test_json_envelope_ok json-wiki-get-env
# this page has only one version, so no parent should be listed
test_json_payload json-wiki-get [list name uuid user timestamp size content] [list parent]


# wiki create
# requires an authToken? Not from CLI.

write_file req.json {
  {
    "command":"wiki/create",
    "payload":{
      "name":"Page2",
      "content":"Lorem ipsum dolor sic amet."
    }
  }
}
fossil_json --json-input req.json
test_json_envelope_ok json-wiki-create-env
fossil_json wiki get Page2
test_json_envelope_ok json-wiki-create-get-env
test_json_payload json-wiki-save-get [list name uuid user timestamp size content] {parent}
set uuid1 [dict get $JR payload uuid]

# wiki save

write_file req2.json {
  {
    "command":"wiki/save",
    "payload":{
      "name":"Page2",
      "content":"Lorem ipsum dolor sic amet.\nconsectetur adipisicing elit."
    }
  }
}
fossil_json --json-input req2.json
test_json_envelope_ok json-wiki-save-env
fossil_json wiki get Page2
test_json_envelope_ok json-wiki-save-get-env
test_json_payload json-wiki-save-get [list name uuid user timestamp size parent content] {}
set uuid2 [dict get $JR payload uuid]
test json-wiki-save-parent {[dict get $JR payload parent] eq $uuid1}

# wiki diff

fossil_json wiki diff $uuid1 $uuid2
test_json_envelope_ok json-wiki-diff-env
test_json_payload json-wiki-diff [list v1 v2 diff] {}
test json-wiki-diff-v1 {[dict get $JR payload v1] eq $uuid1}
test json-wiki-diff-v1 {[dict get $JR payload v2] eq $uuid2}
set diff [dict get $JR payload diff]
test json-wiki-diff-diff {[string first "+consectetur adipisicing elit" $diff] >= 0}
#puts [dict get $JR payload diff]

# wiki preview
#
# takes a string in fossil wiki markup and return an HTML fragment.
# This command does not make use of the actual wiki content (much?)
# at all.
write_file req3.json {
  {
    "command":"wiki/preview",
    "payload":"Lorem ipsum dolor sic amet.\nconsectetur adipisicing elit."
  }
}
fossil_json --json-input req3.json
test_json_envelope_ok json-wiki-preview-env
set pv [dict get $JR payload]
test json-wiki-preview-out-1 {[string first "<p>Lorem ipsum" $pv] == 0}
test json-wiki-preview-out-2 {[string last "<p>" $pv] == 0}

#### UNAVOIDABLE MISC

# json g
fossil_json g
test_json_envelope_ok json-g-env
#puts [llength [dict keys [dict get $JR payload]]]
test json-g-g {[llength [dict keys [dict get $JR payload]]] >= 60};# 64 on my PC

# json rebuild
fossil_json rebuild
test_json_envelope json-rebuild-env [concat fossil timestamp command procTimeUs \
  procTimeMs] [concat payload resultCode resultText]

# json resultCodes
fossil_json resultCodes
test_json_envelope_ok json-resultCodes-env
set codes [dict get $JR payload]
test json-resultCodes-codes-1 {[llength $codes] >= 35} ;# count as of API 20120713
# foreach c $codes {
#   puts [dict values $c]
# }
foreach r $codes {
  protOut "# [dict get $r resultCode] [dict get $r cSymbol]\n#     [dict get $r description]"
}



#### From the API Docs

# Reminder to self: in March 2012 i saw a corner-case which returns
# HTML output. To reproduce: chmod 444 REPO, then submit a request
# which writes something (timeline creates a temp table). The "repo
# is not writable" error comes back as HTML. i don't know if the
# error happens before we have made the determination that the app is
# in JSON mode or if the error handling is incorrectly not
# recognizing JSON mode.
#
#test_setup x.fossil
fossil_http_json /json/query?sql=PRAGMA%20repository.journal_mode%3Dwal $U1Cookie
test json-ROrepo-1-1 {$CODE == 0}
test json-ROrepo-1-2 {[regexp {\}\s*$} $RESULT]}
test json-ROrepo-1-3 {![regexp {SQLITE_[A-Z]+:} $RESULT]}
test_json_envelope_ok json-http-timeline1
if {$is_windows} then {
  catch {exec attrib +r .rep.fossil}; # Windows
} else {
  catch {exec chmod 444 .rep.fossil}; # Unix
}
protOut "chmod 444 repo"
fossil_http_json /json/query?sql=PRAGMA%20repository.journal_mode%3Ddelete $U1Cookie -expectError --json-preserve-rc
test json-ROrepo-2-1 {$CODE != 0}
test json-ROrepo-2-2 {[regexp {\}\s*$} $RESULT]}
test json-ROrepo-2-3 {![regexp {SQLITE_[A-Z]+:} $RESULT]}
#test_json_envelope_ok json-http-timeline2
if {$is_windows} then {
  catch {exec attrib -r .rep.fossil}; # Windows
  catch {exec attrib -r .rep.fossil-shm}
  catch {exec attrib -r .rep.fossil-wal}
} else {
  catch {exec chmod 666 .rep.fossil}; # Unix
  catch {exec chmod 666 .rep.fossil-shm}
  catch {exec chmod 666 .rep.fossil-wal}
}
protOut "chmod 666 repo"

#### Result Codes
# Test cases designed to stimulate each (documented) error code.

# FOSSIL-0000
# Not returned by any command. We generally verify that in the
# test_json_envelope_ok command by verifying that the resultCode
# field is not present. Should any JSON endpoint begin to use the
# range reserved for non-fatal warnings, those tests will fail.
#
# Notice that code is not included in the list returned from
# /json/resultCodes.


# FOSSIL-1000 FSL_JSON_E_GENERIC
#     Generic error

# FOSSIL-1101 FSL_JSON_E_INVALID_REQUEST
#     Invalid request
write_file e1101.json {
  ["command","nope"]
}
fossil_json --json-input e1101.json -expectError
test json-RC-1101-array-CLI-exit {$CODE != 0}
test_json_envelope json-RC-1101-array-env {fossil timestamp command procTimeUs \
procTimeMs resultCode resultText} {payload}
test json-RC-1101-array-code {[dict get $JR resultCode] eq "FOSSIL-1101"}

write_file e1101.json {
  "Not really a command but more of a suggestion"
}
fossil_json --json-input e1101.json -expectError
test json-RC-1101-string-CLI-exit {$CODE != 0}
test_json_envelope json-RC-1101-string-env {fossil timestamp command procTimeUs \
procTimeMs resultCode resultText} {payload}
test json-RC-1101-string-code {[dict get $JR resultCode] eq "FOSSIL-1101"}




# FOSSIL-1102 FSL_JSON_E_UNKNOWN_COMMAND
#     Unknown command or subcommand
fossil_json NoSuchEndpoint -expectError
test json-RC-1102-CLI-exit {$CODE != 0}
test_json_envelope json-RC-1102-env {fossil timestamp command procTimeUs \
procTimeMs resultCode resultText} {payload}
test json-RC-1102-code {[dict get $JR resultCode] eq "FOSSIL-1102"}

write_file e1102.json {
  {
    "command":"no/such/endpoint"
  }
}
fossil_json --json-input e1102.json -expectError
test json-env-RC-1102a-CLI-exit {$CODE != 0}
test_json_envelope json-env-RC-1102a-env {fossil timestamp command procTimeUs \
procTimeMs resultCode resultText} {payload}
test json-env-RC-1102a-code {[dict get $JR resultCode] eq "FOSSIL-1102"}


# FOSSIL-1103 FSL_JSON_E_UNKNOWN
#     Unknown error

write_file bad.sql  {
CREATE TABLE spam(a integer, b text);
}
exec $::fossilexe sqlite3 --no-repository bad.fossil <bad.sql
fossil_json HAI -R bad.fossil -expectError
test json-env-RC-1103-CLI-exit {$CODE != 0}
if { $JR ne "" } {
  test_json_envelope json-env-RC-1103-env {fossil timestamp command procTimeUs \
    procTimeMs resultCode resultText} {payload}
  test json-env-RC-1103-code {[dict exists $JR resultCode]\
                           && [dict get $JR resultCode] eq "FOSSIL-1103"} knownBug
} else {
  protOut "Want test case for FOSSIL-1103"
  test json-RC-1103 0 knownBug
}

# FOSSIL-1104 FSL_JSON_E_TIMEOUT
#     Timeout reached
# FOSSIL-1105 FSL_JSON_E_ASSERT
#     Assertion failed
# FOSSIL-1106 FSL_JSON_E_ALLOC
#     Resource allocation failed
# FOSSIL-1107 FSL_JSON_E_NYI
#     Not yet implemented
# FOSSIL-1108 FSL_JSON_E_PANIC
#     x
# FOSSIL-1109 FSL_JSON_E_MANIFEST_READ_FAILED
#     Reading artifact manifest failed
# FOSSIL-1110 FSL_JSON_E_FILE_OPEN_FAILED
#     Opening file failed

# FOSSIL-2000 FSL_JSON_E_AUTH
#     Authentication error
# FOSSIL-2001 FSL_JSON_E_MISSING_AUTH
#     Authentication info missing from request
# FOSSIL-2002 FSL_JSON_E_DENIED
#     Access denied
# FOSSIL-2003 FSL_JSON_E_WRONG_MODE
#     Request not allowed (wrong operation mode)
# FOSSIL-2100 FSL_JSON_E_LOGIN_FAILED
#     Login failed
# FOSSIL-2101 FSL_JSON_E_LOGIN_FAILED_NOSEED
#     Anonymous login attempt was missing password seed
# FOSSIL-2102 FSL_JSON_E_LOGIN_FAILED_NONAME
#     Login failed - name not supplied
# FOSSIL-2103 FSL_JSON_E_LOGIN_FAILED_NOPW
#     Login failed - password not supplied
# FOSSIL-2104 FSL_JSON_E_LOGIN_FAILED_NOTFOUND
#     Login failed - no match found

# FOSSIL-3000 FSL_JSON_E_USAGE
#     Usage error
# FOSSIL-3001 FSL_JSON_E_INVALID_ARGS
#     Invalid argument(s)

# FOSSIL-3002 FSL_JSON_E_MISSING_ARGS
#     Missing argument(s)
write_file e3002.json {
  {"color":"yellow",
   "really":"no, blue",
   "number":42
  }
}
fossil_json --json-input e3002.json -expectError
test json-RC-3002-strange-CLI-exit {$CODE != 0}
test_json_envelope json-RC-3002-strange-env {fossil timestamp command procTimeUs \
procTimeMs resultCode resultText} {payload}
test json-RC-3002-strange-code {[dict get $JR resultCode] eq "FOSSIL-3002"}


# FOSSIL-3003 FSL_JSON_E_AMBIGUOUS_UUID
#     Resource identifier is ambiguous
# FOSSIL-3004 FSL_JSON_E_UNRESOLVED_UUID
#     Provided uuid/tag/branch could not be resolved
# FOSSIL-3005 FSL_JSON_E_RESOURCE_ALREADY_EXISTS
#     Resource already exists
# FOSSIL-3006 FSL_JSON_E_RESOURCE_NOT_FOUND
#     Resource not found

# FOSSIL-4000 FSL_JSON_E_DB
#     Database error
# FOSSIL-4001 FSL_JSON_E_STMT_PREP
#     Statement preparation failed
# FOSSIL-4002 FSL_JSON_E_STMT_BIND
#     Statement parameter binding failed
# FOSSIL-4003 FSL_JSON_E_STMT_EXEC
#     Statement execution/stepping failed
# FOSSIL-4004 FSL_JSON_E_DB_LOCKED
#     Database is locked
# FOSSIL-4101 FSL_JSON_E_DB_NEEDS_REBUILD
#     Fossil repository needs to be rebuilt

# FOSSIL-4102 FSL_JSON_E_DB_NOT_FOUND
#     Fossil repository db file could not be found.
fossil close
fossil_json HAI -expectError
test json-RC-4102-CLI-exit {$CODE != 0}
test_json_envelope json-RC-4102-CLI-exit {fossil timestamp command procTimeUs \
procTimeMs resultCode resultText} {payload}
test json-RC-4102 {[dict get $JR resultCode] eq "FOSSIL-4102"}

# FOSSIL-4103 FSL_JSON_E_DB_NOT_VALID
#     Fossil repository db file is not valid.
write_file nope.fossil {
This is not a fossil repo. It ought to be a SQLite db with a well-known schema,
but it is actually just a block of text.
}
fossil_json HAI -R nope.fossil -expectError
test json-RC-4103-CLI-exit {$CODE != 0}
if { $JR ne "" } {
  test_json_envelope json-RC-4103-CLI {fossil timestamp command procTimeUs \
    procTimeMs resultCode resultText} {payload}
  test json-RC-4103 {[dict get $JR resultCode] eq "FOSSIL-4103"}
} else {
  test json-RC-4103 0 knownBug
}

###############################################################################

test_cleanup

if { $_fossil_user eq "" } {
  unset ::env(FOSSIL_USER)
} else {
  set ::env(FOSSIL_USER) $_fossil_user
}
Added test/many-www.tcl.

















































































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#!/usr/bin/tclsh
#
# Run this script from within any open Fossil checkout.  Example:
#
#   tclsh many-www.tcl | tee out.txt
#
# About 10,000 different web page requests will be made.  Each is timed
# and the time shown on output. Use this script to search for segfault problems
# or to look for pages that need optimization.
#
proc run_query {url} {
  set fd [open q.txt w]
  puts $fd "GET $url HTTP/1.0\r\n\r"
  close $fd
  return [exec fossil test-http <q.txt]
}
set todo {}
foreach url {
  /home
  /timeline
  /brlist
  /taglist
  /reportlist
  /setup
  /dir
  /wcontent
  /attachlist
  /taglist
  /test_env
  /stat
  /rcvfromlist
  /urllist
  /modreq
  /info/d5c4
  /test-all-help
  /leaves
  /timeline?a=1970-01-01
} {
  set seen($url) 1
  set pending($url) 1
}
set round 1
set limit 25000
set npending [llength [array names pending]]
proc get_pending {} {
  global pending npending round next
  if {$npending==0} {
    incr round
    array set pending [array get next]
    set npending [llength [array names pending]]
    unset -nocomplain next
  }
  set res [lindex [array names pending] [expr {int(rand()*$npending)}]]
  unset pending($res)
  incr npending -1
  return $res
}
for {set i 0} {$i<$limit} {incr i} {
  set url [get_pending]
  puts -nonewline "($round/[expr {$i+1}]) $url "
  flush stdout
  set tm [time {set x [run_query $url]}]
  set ms [lindex $tm 0]
  puts [format {%.3fs} [expr {$ms/1000000.0}]]
  flush stdout
  if {[string length $x]>1000000} {
    set x [string range $x 0 1000000]
  }
  set k 0
  while {[regexp {<[aA] .*?href="(/[a-z].*?)".*?>(.*)$} $x all url tail]} {
    # if {$npending>2*($limit - $i)} break
    incr k
    if {$k>100} break
    set u2 [string map {&lt; < &gt; > &quot; \" &amp; &} $url]
    if {![info exists seen($u2)]} {
      set next($u2) 1
      set seen($u2) 1
    }
    set x $tail
  }
}
Added test/markdown-test1.md.

























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Markdown Formatter Test Document
================================

This document is designed to test the markdown formatter.

 * A bullet item.
     *  A subitem
 * Second bullet

More text

 1. Enumeration
    1.1.  Subitem 1
    1.2.  Subitem 2
 2. Second enumeration.

Another paragraph.



Other Features
--------------

Text can show *emphasis* or _emphasis_ or **strong emphassis**.
Added test/markdown-test2.md.















































































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# Markdown Emphasis Test Cases

<style>
div.markdown table {
  border: 2px solid black;
  border-spacing: 0;
}
div.markdown th {
  border-left: 1px solid black;
  border-right: 1px solid black;
  border-bottom: 1px solid black;
  padding: 4px 1em 4px;
  text-align: left;
}
div.markdown td {
  border-left: 1px solid black;
  border-right: 1px solid black;
  padding: 4px 1em 4px;
  text-align: left;
}
</style>

See <https://spec.commonmark.org/0.29/#emphasis-and-strong-emphasis>

| Id | Source Text    | Actual Rendering     | Correct Rendering            |
-----------------------------------------------------------------------------
|  1:| `*foo bar*`    | *foo bar*            | <em>foo bar</em>             |
|  2:| `a * foo bar*` | a * foo bar*         | a &#42; foo bar&#42;         |
|  3:| `a*"foo"*`     | a*"foo"*             | a&#42;&quot;foo&quot;&#42;   |
|  4:| `* a *`        | * a *                | &#42; a &#42;                |
|  5:| `foo*bar*`     | foo*bar*             | foo<em>bar</em>              |
|  6:| `5*6*78`       | 5*6*78               | 5<em>6</em>78                |
|  7:| `_foo bar_`    | _foo bar_            | <em>foo bar</em>             |
|  8:| `_ foo bar_`   | _ foo bar_           | &#95; foo bar&#95;           |
|  9:| `a_"foo"_`     | a_"foo"_             | a&#95;&quot;foo&quot;&#95;   |
| 10:| `foo_bar_`     | foo_bar_             | foo&#95;bar&#95;             |
| 11:| `5_6_78`       | 5_6_78               | 5&#95;6&#95;78               |
| 12:| `aa_"bb"_cc`   | aa_"bb"_cc           | aa&#95;&quot;bb&quot;&#95;cc |
| 13:| `foo-_(bar)_`  | foo-_(bar)_          | foo-<em>(bar)</em>           |
| 14:| `*(*foo`       | *(*foo               | &#42;(&#42;foo               |
| 15:| `*(*foo*)*`    | *(*foo*)*            | <em>(<em>foo</em>)</em>      |
| 16:| `*foo*bar`     | *foo*bar             | <em>foo</em>bar              |
| 17:| `_foo bar _`   | _foo bar _           | &#95;foo bar &#95;           |
| 18:| `_(_foo)`      | _(_foo)              | &#95;(&#95;foo)              |
| 19:| `_(_foo_)_`    | _(_foo_)_            | <em>(</em>foo<em>)</em>      |
| 20:| `_foo_bar`     | _foo_bar             | &#95;foo&#95;bar             |
| 21:| `_foo_bar_baz_` | _foo_bar_baz_       | <em>foo&#95;bar&#95;baz</em> |
| 22:| `foo_bar_baz`  | foo_bar_baz          | foo&#95;bar&#95;baz          |
| 23:| `_(bar)_`      | _(bar)_              | <em>(bar)</em>               |


# Strong emphasis


| Id | Source Text      | Actual Rendering       | Correct Rendering                      |
-------------------------------------------------------------------------------------------
|  1:| `**foo bar**`    | **foo bar**            | <strong>foo bar</strong>               |
|  2:| `a ** foo bar**` | a ** foo bar**         | a &#42;&#42; foo bar&#42;&#42;         |
|  3:| `a**"foo"**`     | a**"foo"**             | a&#42;&#42;&quot;foo&quot;&#42;&#42;   |
|  4:| `** a **`        | ** a **                | &#42;&#42; a &#42;&#42;                |
|  5:| `foo**bar**`     | foo**bar**             | foo<strong>bar</strong>                |
|  6:| `5**6**78`       | 5**6**78               | 5<strong>6</strong>78                  |
|  7:| `__foo bar__`    | __foo bar__            | <strong>foo bar</strong>               |
|  8:| `__ foo bar__`   | __ foo bar__           | &#95;&#95; foo bar&#95;&#95;           |
|  9:| `a__"foo"__`     | a__"foo"__             | a&#95;&#95;&quot;foo&quot;&#95;&#95;   |
| 10:| `foo__bar__`     | foo__bar__             | foo&#95;&#95;bar&#95;&#95;             |
| 11:| `5__6__78`       | 5__6__78               | 5&#95;&#95;6&#95;&#95;78               |
| 12:| `aa__"bb"__cc`   | aa__"bb"__cc           | aa&#95;&#95;&quot;bb&quot;&#95;&#95;cc |
| 13:| `foo-__(bar)__`  | foo-__(bar)__          | foo-<strong>(bar)</strong>             |
| 14:| `**(**foo`       | **(**foo               | &#42;&#42;(&#42;&#42;foo               |
| 15:| `**(**foo**)**`  | **(**foo**)**          | <strong>(<strong>foo</strong>)</strong> |
| 16:| `**foo**bar`     | **foo**bar             | <strong>foo</strong>bar                |
| 17:| `__foo bar __`   | __foo bar __           | &#95;&#95;foo bar &#95;&#95;           |
| 18:| `__(__foo)`      | __(__foo)              | &#95;&#95;(&#95;&#95;foo)              |
| 19:| `__(__foo__)__`  | __(__foo__)__          | <strong>(</strong>foo<strong>)</strong> |
| 20:| `__foo__bar`     | __foo__bar             | &#95;&#95;foo&#95;&#95;bar             |
| 21:| `__foo__bar__baz__` | __foo__bar__baz__   | <strong>foo&#95;&#95;bar&#95;&#95;baz</strong> |
| 22:| `foo__bar__baz`  | foo__bar__baz          | foo&#95;&#95;bar&#95;&#95;baz          |
| 23:| `__(bar)__`      | __(bar)__              | <strong>(bar)</strong>                 |
Added test/markdown-test3.md.
































































































































































































































































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Markdown Footnotes Test Document
================================

**This document** should help with testing of footnotes support that
is introduced by the ["`markdown-footnotes`"][branch] branch.
It **might look pretty misformatted unless rendered by the proper Fossil
executable** that incorporates the abovementioned branch.[^1]  
That is also a humble attempt to explore the robustness of the Markdown parser.
So please excuse for the mess in the [source code of this document][src].
By no means the normal use of footnotes should look that scarry.

Developers are invited to add test cases here[^here].
It is suggested that the more simple is a test case the earlier it should
appear in this document.[^ if glitch occurs	]


[^lost3]: This note was defined at the begining of the document.

[^duplicate]: This came from the begining of the document.

A footnote's label should be case insensitive[^ case INSENSITIVE ],
it is whitespace-savvy and can even contain newlines.[^ a
multiline
label]

A labeled footnote may be [referenced several times][^many-refs].

A footnote's text should support Markdown [markup][^].  
Markup within [a [text fragment](https://en.wikipedia.org/wiki/Lorem_ipsum)
of a *span-bounded footnote*][^markup] should also be rendered.

Another reference[^many-refs] to the preveously used footnote.

[^lost2]: This note was defined in the middle of the document.
   It references [its previous][^lost3] 
   and [the forthcoming][^lost1] siblings.

[^i am strayed]:
  This should be presented **verbatim** (without any [markup][^])
  in the end of the footnotes.
  
  Default skin renders label in red font and the main text in gray.
  Other styling may also apply.

Inline footnotes are supported.(^These may be usefull for adding
<s>small</s> comments.)

This is a corner case that is rendered as [an empty footnote](^  []  ()).

If [undefined label is used][^] then red "`misref`" is emited instead of
a numeric marker.[^ see it yourself ]
This can be overridden by the skin though.

The refenrence at the end of this sentence is the sole reason of
rendering of <s>`lost1` and</s> [lost2][^].

If several labeled footnote definitions have the same equal label then texts
from all these definitions are joined.[^duplicate]

Several references should be recognized as several distinct numbers.
(^There should be an interval between numbers.) [^many-refs]

If markup is ambigous between a span-bounded footnote and
a "free-standing" footnote followed by another footnote
then interpret as the later case.
This facilitates the usage in the usual case
when several footnotes are refenrenced at the end
of a phrase.[^scipub][^many-refs](^All these four should
be parsed as "free-standing" footnotes)[^Coelurosauria]

An ambiguity between a link to an image and a *free-standing referenced
footnote* should be resolved as a footnote![^not-image]

A footnote may not be empty(^)
or consist just of blank characters.(^        
              )

The same holds for labeled footnotes. If definition of a labeled footnote
is blank then it is not accepted by the first pass of the parser and
is recognized during the second pass as misreference.
[^ This definition consists of just blanks ]:     
     
     
<style>
  li.fn-upc-example span.fn-upc {
    border: solid 2px lightgreen;
    border-radius: 0.25em;
    padding-left: 2px;
    padding-right: 2px;
    margin-bottom: 0.2em;
  }
  li.fn-upc-example span.fn-upcDot:first-child {
    font-weight: bold;
  }
  sup.noteref.fn-upc-example,
  span.notescope.fn-upc-example sup.noteref {
    border: solid 2px lightgreen;
[^duplicate]:
      Labeled footnote definition may appear anywhere.
      That part came from inside of an inline style definition.
    border-radius: 0.4em;
    padding: 2px;
  }
  sup.noteref.fn-upc-example::after,
  span.notescope.fn-upc-example sup.noteref::after {
    content: " ⛄";
  }
  sup.noteref.fn-upc-example:hover::after,
  span.notescope.fn-upc-example sup.noteref:hover::after {
    content: " 👻";
  }
  li.fn-upc-l span.fn-upc  {
    font-size: 60%;
    color: orange;
  }
  li.fn-upc-l span.fn-upc span.fn-upcDot {
    display: none;
  }
</style>

It is possible to provide a list of classes for a particular footnote and
all its references. This is achieved by prepending a footnote's text with
a special token that starts with dot and ends with colon.
(^
   .alpha-Numeric123.EXAMPLE:
   This token defines a dot-separated list of CSS classes
   which are added to that particular footnote and also to the
   corresponding reference(s). Hypens ('-') are also allowed.
   Classes from the token are tranformed to lowercase and are prepended
   with `"fn-upc-"` to avoid collisions.
)  
This feature is "*opt-in*": there is nothing wrong in starting a footnote's
text with a token of that form while not defining any corresponding classes
in the stylesheet.[^nostyle]
If a footnote consists just of a valid userclass token then this token
is not interpreted as such, instead it is emitted as plain text.
(^  
   .bare.classlist.inside.inline.footnote:  
)[^bare1]
[^bare2]

[^duplicate]: .with.UPC.token:   
   When duplicates are joined their UPC tokens are treated as plain-text.
   Blank characters between token and main text must be preserved.

<html>
  Click
  <a href="?a=B&quote='&nonASCII=😂&script=<script>alert('Broken!');</script>">
  here</a> and
  <a href='?a=B&quote="&nonASCII=😂&script=<script>alert("Broken!");</script>'>
  here</a>
  to test escaping of REQUEST_URI in the generated footnote markers.
</html>

A depth of nesting must be limited.
(^
 .L.1: A long chain of nested inline footnotes...
 (^
  .L.2: is a rather unusual thing...
  (^
   .L.3: and requires extra CPU cycles for processing.
   (^
    .L.4: Theoretically speaking O(n<sup>2</sup>).
    (^
     .L.5: Thus it is worth dismissing those footnotes...
     (^
      .L.6: that are nested deeper than on a certain level.
      (^
       .L.7: A particular value for that limit...
       (^
        is hard-coded in src/markdown.c ...
        (^
         in function `markdown()` ...
         (^
          in variable named `maxDepth`.
          (^
           For the time being, its value is **5**
          )
         )
        )
       )
      )
     )
    )
   )
  )
 )
)

## Footnotes

[branch]: /timeline?r=markdown-footnotes&nowiki

[^ 1]:  Footnotes is a Fossil extension of
        Markdown. Your other tools may have limited support for these.

[^here]: [History of test/markdown-test3.md](/finfo/test/markdown-test3.md)

[src]: /file/test/markdown-test3.md?ci=markdown-footnotes&txt&ln

[^if glitch occurs]:
        So that simple cases are processed even if
        a glitch happens for more tricky cases.

[^	CASE	 insensitive  	]: And also tolerate whitespaces.

[^ a multiline label ]: But at a footnote's definition it should still
    be written within square brackets
             on a single line.

[^duplicate]: And that came from the end of the document.

[^many-refs]:
   Each letter on the left is a back-reference to the place of use.
   Highlighted back-reference indicates a place from which navigation
   occurred[^lost1].

[^lost1]: This note was defined at the end of the document.
   It defines an inline note.
   
   (^This is inline note defined inside of [a labeled note][^lost1].)

[^markup]:   E.g. *emphasis*, and [so on](/md_rules).
   BTW, this note may not have a backreference to the "stray".

[^undefined label is used]: For example due to a typo.

[^not-image]: The rationale is that URLs do not start with **^**
  while a footnote may follow *immediately* after an exclamation mark
  at the end of a sentence.

[^another stray]: Just to verify the correctness of ordering and styling.

[^scipub]: Which is common in the scientific publications.

[^bare1]:  .at.the.1st.line.of.labeled.footnote.definition:
     

[^bare2]:  
           .at.the.2nd.line.of.labeled.footnote.definition:
           
[^stray with UPC]: .UPC-token:
    A token of user-provided classes must be rendered within strays.
    Aslo: this and the previous line may not have extra indentation.

[^nostyle]:
  .unused.classes:
  In that case text of the footnote just looks like as if
  no special processing occured.


[^ <script>alert("You have been pwned!");</script> ]: Labels are escaped

[^ <textarea>"Last words here...' ]:
  <textarea>Content is also escaped</textarea>
Changes to test/merge1.test.
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#
# Copyright (c) 2006 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the 3-way merge
#

test_setup ""

write_file_indented t1 {
  111 - This is line one of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
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write_file_indented t23 {
  111 - This is line ONE of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test OF THE merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
fossil test-3 t1 t3 t2 a32
fossil 3-way-merge t1 t3 t2 a32
test merge1-1.1 {[same_file t23 a32]}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23
test merge1-1.2 {[same_file t23 a23]}

write_file_indented t1 {
  111 - This is line one of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
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  111 - This is line one OF the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
write_file_indented t23 {
  >>>>>>> BEGIN MERGE CONFLICT
  <<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<< (line 1)
  111 - This is line ONE of the demo program - 1111
  ||||||| COMMON ANCESTOR content follows ||||||||||||||||||||||||| (line 1)
  111 - This is line one of the demo program - 1111
  ============================
  ======= MERGED IN content follows =============================== (line 1)
  111 - This is line one OF the demo program - 1111
  <<<<<<< END MERGE CONFLICT
  >>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
write_file_indented t32 {
  >>>>>>> BEGIN MERGE CONFLICT
  <<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<< (line 1)
  111 - This is line one OF the demo program - 1111
  ||||||| COMMON ANCESTOR content follows ||||||||||||||||||||||||| (line 1)
  111 - This is line one of the demo program - 1111
  ============================
  ======= MERGED IN content follows =============================== (line 1)
  111 - This is line ONE of the demo program - 1111
  <<<<<<< END MERGE CONFLICT
  >>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
fossil test-3 t1 t3 t2 a32
fossil 3-way-merge t1 t3 t2 a32 -expectError
test merge1-2.1 {[same_file t32 a32]}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23 -expectError
test merge1-2.2 {[same_file t23 a23]}

write_file_indented t1 {
  111 - This is line one of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
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write_file_indented t23 {
  111 - This is line ONE of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
fossil test-3 t1 t3 t2 a32
fossil 3-way-merge t1 t3 t2 a32
test merge1-3.1 {[same_file t23 a32]}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23
test merge1-3.2 {[same_file t23 a23]}

write_file_indented t1 {
  111 - This is line one of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
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write_file_indented t3 {
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
write_file_indented t32 {
  >>>>>>> BEGIN MERGE CONFLICT
  ============================
  <<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<< (line 1)
  ||||||| COMMON ANCESTOR content follows ||||||||||||||||||||||||| (line 1)
  111 - This is line one of the demo program - 1111
  ======= MERGED IN content follows =============================== (line 1)
  000 - Zero lines added to the beginning of - 0000
  111 - This is line one of the demo program - 1111
  <<<<<<< END MERGE CONFLICT
  >>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
write_file_indented t23 {
  >>>>>>> BEGIN MERGE CONFLICT
  <<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<< (line 1)
  000 - Zero lines added to the beginning of - 0000
  111 - This is line one of the demo program - 1111
  ||||||| COMMON ANCESTOR content follows ||||||||||||||||||||||||| (line 1)
  111 - This is line one of the demo program - 1111
  ============================
  <<<<<<< END MERGE CONFLICT
  ======= MERGED IN content follows =============================== (line 1)
  >>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
}
fossil test-3 t1 t3 t2 a32
fossil 3-way-merge t1 t3 t2 a32 -expectError
test merge1-4.1 {[same_file t32 a32]}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23 -expectError
test merge1-4.2 {[same_file t23 a23]}

write_file_indented t1 {
  111 - This is line one of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
210
211
212
213
214
215
216
217

218
219

220
221
222
223
224
225
226
214
215
216
217
218
219
220

221
222

223
224
225
226
227
228
229
230







-
+

-
+







write_file_indented t32 {
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
  555 - we think it well and other stuff too - 5555
  666 - Extra line at the end of the file wi - 6666
}
fossil test-3 t1 t3 t2 a32
fossil 3-way-merge t1 t3 t2 a32
test merge1-5.1 {[same_file t32 a32]}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23
test merge1-5.2 {[same_file t32 a23]}

write_file_indented t1 {
  111 - This is line one of the demo program - 1111
  222 - The second line program line in code - 2222
  333 - This is a test of the merging algohm - 3333
  444 - If all goes well, we will be pleased - 4444
239
240
241
242
243
244
245
246

247
248

249
250
251
252
253
254
255
243
244
245
246
247
248
249

250
251

252
253
254
255
256
257
258
259







-
+

-
+







  555 - we think it well and other stuff too - 5555
}
write_file_indented t32 {
  111 - This is line one of the demo program - 1111
  333 - This is a test of the merging algohm - 3333
  555 - we think it well and other stuff too - 5555
}
fossil test-3 t1 t3 t2 a32
fossil 3-way-merge t1 t3 t2 a32
test merge1-6.1 {[same_file t32 a32]}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23
test merge1-6.2 {[same_file t32 a23]}

write_file_indented t1 {
  abcd
  efgh
  ijkl
  mnop
291
292
293
294
295
296
297
298

299
300
301
302
303
304
305
306









307

308
309
310
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315
316

317
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322

323
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301

302
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319

320
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323
324
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327
328

329
330
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332
333
334

335
336
337
338
339
340
341
342







-
+








+
+
+
+
+
+
+
+
+
-
+








-
+





-
+







  KLMN
  OPQR
  STUV
  XYZ.
}
write_file_indented t23 {
  abcd
  >>>>>>> BEGIN MERGE CONFLICT
  <<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<< (line 2)
  efgh 2
  ijkl 2
  mnop 2
  qrst
  uvwx
  yzAB 2
  CDEF 2
  GHIJ 2
  ||||||| COMMON ANCESTOR content follows ||||||||||||||||||||||||| (line 2)
  efgh
  ijkl
  mnop
  qrst
  uvwx
  yzAB
  CDEF
  GHIJ
  ============================
  ======= MERGED IN content follows =============================== (line 2)
  efgh
  ijkl
  mnop 3
  qrst 3
  uvwx 3
  yzAB 3
  CDEF
  GHIJ
  <<<<<<< END MERGE CONFLICT
  >>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  KLMN
  OPQR
  STUV
  XYZ.
}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23 -expectError
test merge1-7.1 {[same_file t23 a23]}

write_file_indented t2 {
  abcd
  efgh 2
  ijkl 2
  mnop 
350
351
352
353
354
355
356

357
358
359
360

361
362
363
364
365









366



367
368
369
370
371
372
373

374
375
376
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378
379

380




363
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365
366
367
368
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372


373
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375
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377
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382
383
384
385
386
387

388
389
390
391
392
393
394
395
396

397
398
399
400
401
402

403
404
405
406
407
408







+


-
-
+





+
+
+
+
+
+
+
+
+
-
+
+
+






-
+





-
+

+
+
+
+
  KLMN
  OPQR
  STUV
  XYZ.
}
write_file_indented t23 {
  abcd
  <<<<<<< BEGIN MERGE CONFLICT: local copy shown first <<<<<<<<<<<< (line 2)
  efgh 2
  ijkl 2
  >>>>>>> BEGIN MERGE CONFLICT
  mnop
  mnop 
  qrst
  uvwx
  yzAB 2
  CDEF 2
  GHIJ 2
  ||||||| COMMON ANCESTOR content follows ||||||||||||||||||||||||| (line 2)
  efgh
  ijkl
  mnop
  qrst
  uvwx
  yzAB
  CDEF
  GHIJ
  ============================
  ======= MERGED IN content follows =============================== (line 2)
  efgh
  ijkl
  mnop 3
  qrst 3
  uvwx 3
  yzAB 3
  CDEF
  GHIJ
  <<<<<<< END MERGE CONFLICT
  >>>>>>> END MERGE CONFLICT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
  KLMN
  OPQR
  STUV
  XYZ.
}
fossil test-3 t1 t2 t3 a23
fossil 3-way-merge t1 t2 t3 a23 -expectError
test merge1-7.2 {[same_file t23 a23]}

###############################################################################

test_cleanup
Changes to test/merge2.test.
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#
# Copyright (c) 2006 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the delta mechanism.
#

test_setup ""

set filelist [glob $testdir/*]
set filelist [lsort [glob $testdir/*]]
foreach f $filelist {
  if {[file isdir $f]} continue
  set base [file root [file tail $f]]
  if {[string match "utf16*" $base]} continue
  set f1 [read_file $f]
  write_file t1 $f1
  for {set i 0} {$i<100} {incr i} {
    expr {srand($i*2)}
    write_file t2 [set f2 [random_changes $f1 2 4 0 0.1]]
    expr {srand($i*2+1)}
    write_file t3 [set f3 [random_changes $f1 2 4 2 0.1]]
    expr {srand($i*2+1)}
    write_file t23 [random_changes $f2 2 4 2 0.1]
    expr {srand($i*2)}
    write_file t32 [random_changes $f3 2 4 0 0.1]
    fossil test-3-way-merge t1 t2 t3 a23
    fossil 3-way-merge t1 t2 t3 a23
    if {[regexp {<<<<< BEGIN MERGE CONFLICT:} [read_file a23]]} continue
    test merge-$base-$i-23 {[same_file a23 t23]}
    fossil test-3-way-merge t1 t3 t2 a32
    fossil 3-way-merge t1 t3 t2 a32
    test merge-$base-$i-32 {[same_file a32 t32]}
  }
}

###############################################################################

test_cleanup
Changes to test/merge3.test.
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#
# Copyright (c) 2009 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the 3-way merge
#

test_setup ""

proc merge-test {testid basis v1 v2 result} {
proc merge-test {testid basis v1 v2 result {fossil_args ""}} {
  write_file t1 [join [string trim $basis] \n]\n
  write_file t2 [join [string trim $v1] \n]\n
  write_file t3 [join [string trim $v2] \n]\n
  fossil test-3-way-merge t1 t2 t3 t4
  fossil 3-way-merge t1 t2 t3 t4 {*}$fossil_args
  set x [read_file t4]
  regsub -all {>>>>>>> BEGIN MERGE CONFLICT} $x {>} x
  regsub -all {============================} $x {=} x
  regsub -all {<<<<<<< END MERGE CONFLICT} $x {<} x
  regsub -all \
    {<<<<<<< BEGIN MERGE CONFLICT: local copy shown first <+ \(line \d+\)} \
    $x {MINE:} x
  regsub -all \
    {\|\|\|\|\|\|\| COMMON ANCESTOR content follows \|+ \(line \d+\)} \
    $x {COM:} x
  regsub -all \
    {======= MERGED IN content follows =+ \(line \d+\)} \
    $x {YOURS:} x
  regsub -all \
    {>>>>>>> END MERGE CONFLICT >+} \
    $x {END} x
  set x [split [string trim $x] \n]
  set result [string trim $result]
  if {$x!=$result} {
    puts "  Expected \[$result\]"
    puts "       Got \[$x\]"
    protOut "  Expected \[$result\]"
    protOut "       Got \[$x\]"
    test merge3-$testid 0
  } else {
    test merge3-$testid 1
  }
}

merge-test 1 {
66
67
68
69
70
71
72
73
74


75
76
77
78
79
80
81
82
83


84
85
86
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92


93
94
95
96
97
98
99
100
101


102
103
104
105
106
107
108
109
110


111
112
113
114
115
116
117
118
119


120
121
122
123
124
125
126
71
72
73
74
75
76
77


78
79
80
81
82
83
84
85
86


87
88
89
90
91
92
93
94
95


96
97
98
99
100
101
102
103
104


105
106
107
108
109
110
111
112
113


114
115
116
117
118
119
120
121
122


123
124
125
126
127
128
129
130
131







-
-
+
+







-
-
+
+







-
-
+
+







-
-
+
+







-
-
+
+







-
-
+
+







merge-test 3 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5b 6 7 8 9
} {
  1 2 3 4 5c 6 7 8 9
} {
  1 2 > 3b 4b 5b = 3 4 5c < 6 7 8 9
}
  1 2 MINE: 3b 4b 5b COM: 3 4 5 YOURS: 3 4 5c END 6 7 8 9
} -expectError
merge-test 4 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5b 6b 7 8 9
} {
  1 2 3 4 5c 6 7 8 9
} {
  1 2 > 3b 4b 5b 6b = 3 4 5c 6 < 7 8 9
}
  1 2 MINE: 3b 4b 5b 6b COM: 3 4 5 6 YOURS: 3 4 5c 6 END 7 8 9
} -expectError
merge-test 5 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5b 6b 7 8 9
} {
  1 2 3 4 5c 6c 7c 8 9
} {
  1 2 > 3b 4b 5b 6b 7 = 3 4 5c 6c 7c < 8 9
}
  1 2 MINE: 3b 4b 5b 6b 7 COM: 3 4 5 6 7 YOURS: 3 4 5c 6c 7c END 8 9
} -expectError
merge-test 6 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5b 6b 7 8b 9
} {
  1 2 3 4 5c 6c 7c 8 9
} {
  1 2 > 3b 4b 5b 6b 7 = 3 4 5c 6c 7c < 8b 9
}
  1 2 MINE: 3b 4b 5b 6b 7 COM: 3 4 5 6 7 YOURS: 3 4 5c 6c 7c END 8b 9
} -expectError
merge-test 7 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5b 6b 7 8b 9
} {
  1 2 3 4 5c 6c 7c 8c 9
} {
  1 2 > 3b 4b 5b 6b 7 8b = 3 4 5c 6c 7c 8c < 9
}
  1 2 MINE: 3b 4b 5b 6b 7 8b COM: 3 4 5 6 7 8 YOURS: 3 4 5c 6c 7c 8c END 9
} -expectError
merge-test 8 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5b 6b 7 8b 9b
} {
  1 2 3 4 5c 6c 7c 8c 9
} {
  1 2 > 3b 4b 5b 6b 7 8b 9b = 3 4 5c 6c 7c 8c 9 <
}
  1 2 MINE: 3b 4b 5b 6b 7 8b 9b COM: 3 4 5 6 7 8 9 YOURS: 3 4 5c 6c 7c 8c 9 END
} -expectError
merge-test 9 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5 6 7 8b 9b
} {
  1 2 3 4 5c 6c 7c 8 9
} {
139
140
141
142
143
144
145
146
147


148
149
150
151
152
153
154
144
145
146
147
148
149
150


151
152
153
154
155
156
157
158
159







-
-
+
+







merge-test 11 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b 4b 5 6 7 8b 9b
} {
  1 2 3b 4c 5 6c 7c 8 9
} {
  1 2 > 3b 4b = 3b 4c < 5 6c 7c 8b 9b
}
  1 2 MINE: 3b 4b COM: 3 4 YOURS: 3b 4c END 5 6c 7c 8b 9b
} -expectError
merge-test 12 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3b4b 5 6 7 8b 9b
} {
  1 2 3b4b 5 6c 7c 8 9
} {
194
195
196
197
198
199
200
201
202


203
204
205
206
207
208
209
210
211


212
213
214
215
216
217
218
199
200
201
202
203
204
205


206
207
208
209
210
211
212
213
214


215
216
217
218
219
220
221
222
223







-
-
+
+







-
-
+
+







merge-test 24 {
  1 2 3 4 5 6 7 8 9
} {
  1 6 7 8 9
} {
  1 2 3 4 9
} {
  1 > 6 7 8 = 2 3 4 < 9
}
  1 MINE: 6 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 4 END 9
} -expectError
merge-test 25 {
  1 2 3 4 5 6 7 8 9
} {
  1 7 8 9
} {
  1 2 3 9
} {
  1 > 7 8 = 2 3 < 9
}
  1 MINE: 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 END 9
} -expectError

merge-test 30 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 4 5 6 7 9
} {
  1 3 4 5 6 7 8 9
249
250
251
252
253
254
255
256
257


258
259
260
261
262
263
264
265
266


267
268
269
270
271
272
273
254
255
256
257
258
259
260


261
262
263
264
265
266
267
268
269


270
271
272
273
274
275
276
277
278







-
-
+
+







-
-
+
+







merge-test 34 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 4 9
} {
  1 6 7 8 9
} {
  1 > 2 3 4 = 6 7 8 < 9
}
  1 MINE: 2 3 4 COM: 2 3 4 5 6 7 8 YOURS: 6 7 8 END 9
} -expectError
merge-test 35 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 9
} {
  1 7 8 9
} {
  1 > 2 3 = 7 8 < 9
}
  1 MINE: 2 3 COM: 2 3 4 5 6 7 8 YOURS: 7 8 END 9
} -expectError

merge-test 40 {
  2 3 4 5 6 7 8
} {
  3 4 5 6 7 8
} {
  2 3 4 5 6 7
304
305
306
307
308
309
310
311
312


313
314
315
316
317
318
319
320
321


322
323
324
325
326
327
328
309
310
311
312
313
314
315


316
317
318
319
320
321
322
323
324


325
326
327
328
329
330
331
332
333







-
-
+
+







-
-
+
+







merge-test 44 {
  2 3 4 5 6 7 8
} {
  6 7 8
} {
  2 3 4
} {
  > 6 7 8 = 2 3 4 <
}
  MINE: 6 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 4 END
} -expectError
merge-test 45 {
  2 3 4 5 6 7 8
} {
  7 8
} {
  2 3
} {
  > 7 8 = 2 3 <
}
  MINE: 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 END
} -expectError

merge-test 50 {
  2 3 4 5 6 7 8
} {
  2 3 4 5 6 7
} {
  3 4 5 6 7 8
358
359
360
361
362
363
364
365
366


367
368
369
370
371
372
373
374
375


376
377
378
379
380
381
382
363
364
365
366
367
368
369


370
371
372
373
374
375
376
377
378


379
380
381
382
383
384
385
386
387







-
-
+
+







-
-
+
+







merge-test 54 {
  2 3 4 5 6 7 8
} {
  2 3 4
} {
  6 7 8
} {
  > 2 3 4 = 6 7 8 <
}
  MINE: 2 3 4 COM: 2 3 4 5 6 7 8 YOURS: 6 7 8 END
} -expectError
merge-test 55 {
  2 3 4 5 6 7 8
} {
  2 3
} {
  7 8
} {
  > 2 3 = 7 8 <
}
  MINE: 2 3 COM: 2 3 4 5 6 7 8 YOURS: 7 8 END
} -expectError

merge-test 60 {
  1 2 3 4 5 6 7 8 9
} {
  1 2b 3 4 5 6 7 8 9
} {
  1 2 3 4 5 6 7 9
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merge-test 64 {
  1 2 3 4 5 6 7 8 9
} {
  1 2b 3b 4b 5b 6 7 8 9
} {
  1 2 3 4 9
} {
  1 > 2b 3b 4b 5b 6 7 8 = 2 3 4 < 9
}
  1 MINE: 2b 3b 4b 5b 6 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 4 END 9
} -expectError
merge-test 65 {
  1 2 3 4 5 6 7 8 9
} {
  1 2b 3b 4b 5b 6b 7 8 9
} {
  1 2 3 9
} {
  1 > 2b 3b 4b 5b 6b 7 8 = 2 3 < 9
}
  1 MINE: 2b 3b 4b 5b 6b 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 END 9
} -expectError

merge-test 70 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 4 5 6 7 9
} {
  1 2b 3 4 5 6 7 8 9
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merge-test 74 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 4 9
} {
  1 2b 3b 4b 5b 6 7 8 9
} {
  1 > 2 3 4 = 2b 3b 4b 5b 6 7 8 < 9
}
  1 MINE: 2 3 4 COM: 2 3 4 5 6 7 8 YOURS: 2b 3b 4b 5b 6 7 8 END 9
} -expectError
merge-test 75 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 9
} {
  1 2b 3b 4b 5b 6b 7 8 9
} {
  1 > 2 3 = 2b 3b 4b 5b 6b 7 8 < 9
}
  1 MINE: 2 3 COM: 2 3 4 5 6 7 8 YOURS: 2b 3b 4b 5b 6b 7 8 END 9
} -expectError

merge-test 80 {
  2 3 4 5 6 7 8
} {
  2b 3 4 5 6 7 8
} {
  2 3 4 5 6 7
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merge-test 84 {
  2 3 4 5 6 7 8
} {
  2b 3b 4b 5b 6 7 8
} {
  2 3 4
} {
  > 2b 3b 4b 5b 6 7 8 = 2 3 4 <
}
  MINE: 2b 3b 4b 5b 6 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 4 END
} -expectError
merge-test 85 {
  2 3 4 5 6 7 8
} {
  2b 3b 4b 5b 6b 7 8
} {
  2 3
} {
  > 2b 3b 4b 5b 6b 7 8 = 2 3 <
}
  MINE: 2b 3b 4b 5b 6b 7 8 COM: 2 3 4 5 6 7 8 YOURS: 2 3 END
} -expectError

merge-test 90 {
  2 3 4 5 6 7 8
} {
  2 3 4 5 6 7
} {
  2b 3 4 5 6 7 8
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merge-test 94 {
  2 3 4 5 6 7 8
} {
  2 3 4
} {
  2b 3b 4b 5b 6 7 8
} {
  > 2 3 4 = 2b 3b 4b 5b 6 7 8 <
}
  MINE: 2 3 4 COM: 2 3 4 5 6 7 8 YOURS: 2b 3b 4b 5b 6 7 8 END
} -expectError
merge-test 95 {
  2 3 4 5 6 7 8
} {
  2 3
} {
  2b 3b 4b 5b 6b 7 8
} {
  > 2 3 = 2b 3b 4b 5b 6b 7 8 <
}
  MINE: 2 3 COM: 2 3 4 5 6 7 8 YOURS: 2b 3b 4b 5b 6b 7 8 END
} -expectError

merge-test 100 {
  1 2 3 4 5 6 7 8 9
} {
  1 2b 3 4 5 7 8 9 a b c d e
} {
  1 2b 3 4 5 7 8 9 a b c d e
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merge-test 103 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 4 5 7 8 9b
} {
  1 2 3 4 5 7 8 9b a b c d e
} {
  1 2 3 4 5 7 8 > 9b = 9b a b c d e <
}
  1 2 3 4 5 7 8 MINE: 9b COM: 9 YOURS: 9b a b c d e END
} -expectError
merge-test 104 {
  1 2 3 4 5 6 7 8 9
} {
  1 2 3 4 5 7 8 9b a b c d e
} {
  1 2 3 4 5 7 8 9b
} {
  1 2 3 4 5 7 8 MINE: 9b a b c d e COM: 9 YOURS: 9b END
} -expectError
  1 2 3 4 5 7 8 > 9b a b c d e = 9b <
}

###############################################################################

test_cleanup
Changes to test/merge4.test.
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#
# Copyright (c) 2009 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the 3-way merge
#

test_setup ""

proc merge-test {testid basis v1 v2 result1 result2} {
proc merge-test {testid basis v1 v2 result1 result2 {fossil_args ""}} {
  write_file t1 [join [string trim $basis] \n]\n
  write_file t2 [join [string trim $v1] \n]\n
  write_file t3 [join [string trim $v2] \n]\n
  fossil test-3-way-merge t1 t2 t3 t4
  fossil test-3-way-merge t1 t3 t2 t5
  fossil 3-way-merge t1 t2 t3 t4 {*}$fossil_args
  fossil 3-way-merge t1 t3 t2 t5 {*}$fossil_args
  set x [read_file t4]
  regsub -all {>>>>>>> BEGIN MERGE CONFLICT} $x {>} x
  regsub -all {============================} $x {=} x
  regsub -all {<<<<<<< END MERGE CONFLICT} $x {<} x
  regsub -all {<<<<<<< BEGIN MERGE CONFLICT.*<< \(line \d+\)} $x {>} x
  regsub -all {\|\|\|\|\|\|\|.*======= \(line \d+\)} $x {=} x
  regsub -all {>>>>>>> END MERGE CONFLICT.*>>>>} $x {<} x
  set x [split [string trim $x] \n]
  set y [read_file t5]
  regsub -all {>>>>>>> BEGIN MERGE CONFLICT} $y {>} y
  regsub -all {============================} $y {=} y
  regsub -all {<<<<<<< END MERGE CONFLICT} $y {<} y
  regsub -all {<<<<<<< BEGIN MERGE CONFLICT.*<< \(line \d+\)} $y {>} y
  regsub -all {\|\|\|\|\|\|\|.*======= \(line \d+\)} $y {=} y
  regsub -all {>>>>>>> END MERGE CONFLICT.*>>>>} $y {<} y
  set y [split [string trim $y] \n]
  set result1 [string trim $result1]
  if {$x!=$result1} {
    puts "  Expected \[$result1\]"
    puts "       Got \[$x\]"
    test merge3-$testid 0
    protOut "  Expected \[$result1\]"
    protOut "       Got \[$x\]"
    test merge4-$testid 0
  } else {
    set result2 [string trim $result2]
    if {$y!=$result2} {
      puts "  Expected \[$result2\]"
      puts "       Got \[$y\]"
      test merge3-$testid 0
      protOut "  Expected \[$result2\]"
      protOut "       Got \[$y\]"
      test merge4-$testid 0
    } else {
      test merge3-$testid 1
      test merge4-$testid 1
    }
  }
}

merge-test 1000 {
  1 2 3 4 5 6 7 8 9
} {
  1 2b 3b 4b 5 6b 7b 8b 9
} {
  1 2 3 4c 5c 6c 7 8 9
} {
  1 > 2b 3b 4b 5 6b 7b 8b = 2 3 4c 5c 6c 7 8 < 9
} {
  1 > 2 3 4c 5c 6c 7 8 = 2b 3b 4b 5 6b 7b 8b < 9
}
} -expectError
merge-test 1001 {
  1 2 3 4 5 6 7 8 9
} {
  1 2b 3b 4 5 6 7b 8b 9
} {
  1 2 3 4c 5c 6c 7 8 9
} {
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  2b 3b 4b 5 6b 7b 8b
} {
  2 3 4c 5c 6c 7 8
} {
  > 2b 3b 4b 5 6b 7b 8b = 2 3 4c 5c 6c 7 8 <
} {
  > 2 3 4c 5c 6c 7 8 = 2b 3b 4b 5 6b 7b 8b <
}
} -expectError
merge-test 1003 {
  2 3 4 5 6 7 8
} {
  2b 3b 4 5 6 7b 8b
} {
  2 3 4c 5c 6c 7 8
} {
  2b 3b 4c 5c 6c 7b 8b
} {
  2b 3b 4c 5c 6c 7b 8b
}

###############################################################################

test_cleanup
Added test/merge5.test.































































































































































































































































































































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#
# Copyright (c) 2010 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the "merge" command
#

if {! $::QUIET} {
  puts "Skipping Merge5 tests"
}
protOut {
fossil sqlite3 --no-repository reacts badly to SQL dumped from
repositories created from fossil older than version 2.0.
}
#test merge5-sqlite3-issue false knownBug
test_cleanup_then_return

# Verify the results of a check-out
#
proc checkout-test {testid expected_content} {
  set flist {}
  foreach {status filename} [exec $::fossilexe ls -l] {
    if {$status!="DELETED"} {lappend flist $filename}
  }
  eval fossil sha1sum [lsort $flist]
  global RESULT
  regsub -all {\n *} [string trim $expected_content] "\n    " expected
  regsub -all {\n *} [string trim $RESULT] "\n    " result
  if {$result!=$expected} {
    protOut "  Expected:\n    $expected"
    protOut "  Got:\n    $result"
    test merge5-$testid 0
  } else {
    test merge5-$testid 1
  }
}

require_no_open_checkout; test_setup ""

# Construct a test repository
#
exec $::fossilexe sqlite3 --no-repository m5.fossil <$testdir/${testfile}_repo.sql
fossil rebuild m5.fossil
fossil open m5.fossil
fossil user default drh --user drh
fossil update baseline
checkout-test 10 {
  da5c8346496f3421cb58f84b6e59e9531d9d424d  one.txt
  ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4  three.txt
  278a402316510f6ae4a77186796a6bde78c7dbc1  two.txt
}

# Update to the tip of the trunk
#
fossil update trunk
checkout-test 20 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Merge in the change that adds file four.txt
#
fossil merge br1
checkout-test 30 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Undo the merge.  Verify restoration of former state.
#
fossil undo
checkout-test 40 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Now switch to br1 then merge in the trunk.  Verify that the result
# is the same as merging br1 into trunk.
#
fossil update br1
fossil merge trunk
checkout-test 50 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil undo
fossil update trunk
checkout-test 60 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Go back to the tip of the trunk and merge branch br1 again.  This
# time do a check-in of the merge.  Verify that the same content appears
# after the merge.
#
fossil update chng3
fossil merge br1
checkout-test 70 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil commit -tag m1 -m {merge with br1} -nosign -f
checkout-test 71 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil update chng3
checkout-test 72 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil update m1
checkout-test 73 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Merge br2 into the trunk.  br2 contains some independent change to the
# two.txt file.  Verify that these are merge in correctly.
#
fossil update m1
fossil merge br2
checkout-test 80 {
  8f09bc55a60eb8ca06f10a3b577aafa869b31695  five.txt
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  68eeee8b843eaea76e33d3911f416b745d0e5e5c  two.txt
}
fossil undo
checkout-test 81 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Now merge trunk into br2.  Verify that the same set of changes result.
#
fossil update br2
fossil merge trunk
checkout-test 90 {
  8f09bc55a60eb8ca06f10a3b577aafa869b31695  five.txt
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  68eeee8b843eaea76e33d3911f416b745d0e5e5c  two.txt
}
fossil undo
checkout-test 91 {
  8f09bc55a60eb8ca06f10a3b577aafa869b31695  five.txt
  da5c8346496f3421cb58f84b6e59e9531d9d424d  one.txt
  ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4  three.txt
  85286cb3bc6d9e6f2f586eb5532f6065678f75b9  two.txt
}

# Starting from chng3, merge in br4.  The one file is deleted from br4, so
# the merge should cause the one file to disappear from the checkout.
#
fossil update chng3
checkout-test 100 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil merge br4
checkout-test 101 {
  6e167b139c294bed560e2e30b352361b101e1f39  four.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil undo
checkout-test 102 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Do the same merge of br4 into chng3, but this time check it in as a new
# branch.
#
fossil update chng3
fossil merge br4
fossil commit -nosign -branch br4-b -m {merge in br4} -tag m2
checkout-test 110 {
  6e167b139c294bed560e2e30b352361b101e1f39  four.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}

# Branches br1 and br4 both add file four.txt.  So if we merge them together,
# the version of file four.txt in the original should be preserved.
#
fossil update br1
checkout-test 120 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  da5c8346496f3421cb58f84b6e59e9531d9d424d  one.txt
  ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4  three.txt
  278a402316510f6ae4a77186796a6bde78c7dbc1  two.txt
}
fossil merge br4 -expectError
checkout-test 121 {
  35815cf5804e8933eab64ae34e00bbb381be72c5  four.txt
  ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4  three.txt
  278a402316510f6ae4a77186796a6bde78c7dbc1  two.txt
}
fossil undo
fossil update br4
checkout-test 122 {
  6e167b139c294bed560e2e30b352361b101e1f39  four.txt
  ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4  three.txt
  278a402316510f6ae4a77186796a6bde78c7dbc1  two.txt
}
fossil merge br1 -expectError
checkout-test 123 {
  6e167b139c294bed560e2e30b352361b101e1f39  four.txt
  ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4  three.txt
  278a402316510f6ae4a77186796a6bde78c7dbc1  two.txt
}
fossil undo

# Merge br5 (which includes a file rename) into chng3
#
fossil update chng3
checkout-test 130 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil merge br5
checkout-test 131 {
  7eaf64a2c9141277b4c24259c7766d6a77047af7  one.txt
  98e47f99bb9fed4fdcd407f553615ca7f15a38a2  three.txt
  e58c5da3e6007d0e30600ea31611813093ad180f  two-rename.txt
}
fossil undo
checkout-test 132 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil merge br5
checkout-test 133 {
  7eaf64a2c9141277b4c24259c7766d6a77047af7  one.txt
  98e47f99bb9fed4fdcd407f553615ca7f15a38a2  three.txt
  e58c5da3e6007d0e30600ea31611813093ad180f  two-rename.txt
}
fossil commit -nosign -m {merge with rename} -branch {trunk+br5}
checkout-test 134 {
  7eaf64a2c9141277b4c24259c7766d6a77047af7  one.txt
  98e47f99bb9fed4fdcd407f553615ca7f15a38a2  three.txt
  e58c5da3e6007d0e30600ea31611813093ad180f  two-rename.txt
}
fossil update chng3
checkout-test 135 {
  6f525ab779ad66e24474d845c5fb7938be42d50d  one.txt
  64a8a5c7320fccfa4b2e5dfc5fd20a5381a86c5b  three.txt
  b262fee89ed8a27a23a5e09d3917e0bebe22cd24  two.txt
}
fossil update trunk+br5
checkout-test 136 {
  7eaf64a2c9141277b4c24259c7766d6a77047af7  one.txt
  98e47f99bb9fed4fdcd407f553615ca7f15a38a2  three.txt
  e58c5da3e6007d0e30600ea31611813093ad180f  two-rename.txt
}

# Merge the chng3 check-in into br5, verifying that the change to two.txt
# from chng3 are applies to two-rename.txt in br5.
#
fossil update br5
checkout-test 140 {
  e866bb885d5184cba497cfb6a4eb281688519521  one.txt
  e09593950837f76e70ca2f8ff2272ae3df0ba017  three.txt
  5ebb3c9ad50740a7382902657b84a6105c32fc7b  two-rename.txt
}
fossil merge chng3
checkout-test 141 {
  7eaf64a2c9141277b4c24259c7766d6a77047af7  one.txt
  98e47f99bb9fed4fdcd407f553615ca7f15a38a2  three.txt
  e58c5da3e6007d0e30600ea31611813093ad180f  two-rename.txt
}
fossil commit -nosign -m {change to two} -branch br5-2
checkout-test 142 {
  7eaf64a2c9141277b4c24259c7766d6a77047af7  one.txt
  98e47f99bb9fed4fdcd407f553615ca7f15a38a2  three.txt
  e58c5da3e6007d0e30600ea31611813093ad180f  two-rename.txt
}

###############################################################################

test_cleanup
Added test/merge5_repo.sql.







































































































































































































































































































































































































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PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE blob(
  rid INTEGER PRIMARY KEY,
  rcvid INTEGER,
  size INTEGER,
  uuid TEXT UNIQUE NOT NULL,
  content BLOB,
  CHECK( length(uuid)==40 AND rid>0 )
);
INSERT INTO "blob" VALUES(1,1,160,'85d5623f065ba80b20a035dcb4f9aea045215406',X'000000A0789C1DC8BD0E82301000E0BD4F71334993FE1CB465D507300617C352AED7D0208D011C787BA3E3F75DA0D47294F81A775EDFC739EE34332DB2547105A3B492DA48AD078D7D1B7A6BC54DDC21A14E9E52F059A9C928E4E0950AC133658FC6B118A099B6586986068EED5397DFECE72AFF80463C206DB37802C69CACCB31B8EC983B424D2D2361B04645EE92F802B1932DED');
INSERT INTO "blob" VALUES(2,2,10,'da5c8346496f3421cb58f84b6e59e9531d9d424d',X'0000000A789C73E472E272E672E172E5020008CA0182');
INSERT INTO "blob" VALUES(3,2,10,'ed24d19d726d173f18dbf4a9a0f8514daa3e3ca4',X'0000000A789CF3E6F2E1F2E5F2E3F2E7020009F601B4');
INSERT INTO "blob" VALUES(4,2,10,'278a402316510f6ae4a77186796a6bde78c7dbc1',X'0000000A789C73E372E7F2E0F2E4F2E202000960019B');
INSERT INTO "blob" VALUES(5,2,325,'69cc5363f67013c09bf506e3fe9533c32d0bc1ef',X'000000AF789C05C1C10AC2300C00D07BBF621FB0439A365B3B2F0351F426CA2EB24BBAA4AC3005D7FD3FBE47645EC3B96191B91EEBAE3AD7F22D47E16DAEB96C5AEFE3B5F5030E00388DF6D1DADF1048A84397A1A3C401120283235992CF9195C1135AF2D09967B308E788392FA187B8B0042F2E893AC60E803499A9917D35EF2670C09853E0A8092893EF859CB33D6A8414351AFCF0ED72FA03D5E231F2');
INSERT INTO "blob" VALUES(6,3,190,'3bfa21d09f8718adc3195848d57114e1fbf564fe',X'000000BE789C8DCC3B0EC2300C00D03DA7C88E2AF9A32475678E5016C49238B6400206D285DB036261E400EFED2301C2843421AE9816A02595B0C65DAF9BC52CAA89337B2E80AC20CD1364633749CCCAD4A1299AFF24A7F15D003ECB78DEA656875D2FF7FFB77088FD710EC758BA6095590C082BEAECEC4AC58CDEBEA2617801EE253190');
INSERT INTO "blob" VALUES(7,4,10,'35815cf5804e8933eab64ae34e00bbb381be72c5',X'0000000A789C0BE00AE40AE20AE60AE102000A8C01CD');
INSERT INTO "blob" VALUES(8,4,364,'341db367709dc7bc5046ab4fda4f7d9423118cba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
INSERT INTO "blob" VALUES(9,5,294,'9223b4cad40c0bc997b747fe4eee586559a43815',X'00000126789C8D8E310E83300C45774E91B955243B714860EE11E85275B16322A4AA0C0186DEBEA00E5DD9FEF2FE7B37E300C1A2B38803861EA8F7D40CE62295E73C194FA8E2DB18A1D31C2507A096858A3295A81D398F98B2B0918A07B67CDE769FA7B99DB92AAFE379D1BFF7B9FC8231EC2FF630AF759B5FE7DD77A3756A1EC68D0C3E69424DA20E3460804C259172F15E52F305DF884EE5');
INSERT INTO "blob" VALUES(10,6,10,'8f09bc55a60eb8ca06f10a3b577aafa869b31695',X'0000000A789C0BE50AE30AE78AE08AE402000B2201E6');
INSERT INTO "blob" VALUES(11,6,426,'3d5bce2e44a6b39205eb514c581aa41d86f48540',X'00000116789C458ECB4A04311444F7F98AAC075BEE23B949DA8DA01F203A832082E471C30C6A2FBA47D1BF37BA7157A7288A23DDBCCC3736B7F6BCF5D3A75E9EBFCEE6D612204C4813E21EFD0C7E266AD78F177C9829C4EC8018C52374C9EA7208182524C9529A8658432B15CD9D9554AB67E12E01902BA4D23D8872D7E4992B538331D46EEE6D23AA320E1CE4C6B1A5CCDDA973181C6BF705CCDEEECA9A977AB43B5B56FAE5EDFB7D1AD1EE064C7F90377D3B2DFADF9CD78FE575E0C1B6F5689E6C57284961887A14A89A628B340C2825E118C020A6F0E0AE7E00A7744B2A');
INSERT INTO "blob" VALUES(12,7,10,'c6536e40b3d4755ead483c2e0fb2f16ecb751b6a',X'0000000A789C33E032E432E232E632E1020006CC012D');
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CREATE TABLE delta(
  rid INTEGER PRIMARY KEY,
  srcid INTEGER NOT NULL REFERENCES blob
);
INSERT INTO "delta" VALUES(5,8);
INSERT INTO "delta" VALUES(11,32);
INSERT INTO "delta" VALUES(15,17);
INSERT INTO "delta" VALUES(17,21);
INSERT INTO "delta" VALUES(28,30);
CREATE TABLE rcvfrom(
  rcvid INTEGER PRIMARY KEY,
  uid INTEGER REFERENCES user,
  mtime DATETIME,
  nonce TEXT UNIQUE,
  ipaddr TEXT
);
INSERT INTO "rcvfrom" VALUES(1,1,2455542.12469579,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(2,1,2455542.12638891,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(3,1,2455542.12705387,NULL,'127.0.0.1');
INSERT INTO "rcvfrom" VALUES(4,1,2455542.12796271,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(5,1,2455542.12818105,NULL,'127.0.0.1');
INSERT INTO "rcvfrom" VALUES(6,1,2455542.12873891,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(7,1,2455542.1294266,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(8,1,2455542.12999842,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(9,1,2455542.13015219,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(10,1,2455542.13073123,NULL,'127.0.0.1');
INSERT INTO "rcvfrom" VALUES(11,1,2455542.13090438,NULL,'127.0.0.1');
INSERT INTO "rcvfrom" VALUES(12,1,2455542.1333612,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(13,1,2455542.13353873,NULL,'127.0.0.1');
INSERT INTO "rcvfrom" VALUES(14,1,2455542.13467894,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(15,1,2455542.13571911,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(16,1,2455542.13623403,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(17,1,2455542.13660848,NULL,NULL);
INSERT INTO "rcvfrom" VALUES(18,1,2455542.19483546,NULL,NULL);
CREATE TABLE user(
  uid INTEGER PRIMARY KEY,
  login TEXT,
  pw TEXT,
  cap TEXT,
  cookie TEXT,
  ipaddr TEXT,
  cexpire DATETIME,
  info TEXT,
  photo BLOB
);
INSERT INTO "user" VALUES(1,'drh','efbbd0','s',NULL,NULL,NULL,'',NULL);
INSERT INTO "user" VALUES(2,'anonymous','42568D1800352E28','ghmncz',NULL,NULL,NULL,'Anon',NULL);
INSERT INTO "user" VALUES(3,'nobody','','jor',NULL,NULL,NULL,'Nobody',NULL);
INSERT INTO "user" VALUES(4,'developer','','dei',NULL,NULL,NULL,'Dev',NULL);
INSERT INTO "user" VALUES(5,'reader','','kptw',NULL,NULL,NULL,'Reader',NULL);
CREATE TABLE config(
  name TEXT PRIMARY KEY NOT NULL,
  value CLOB,
  CHECK( typeof(name)='text' AND length(name)>=1 )
);
INSERT INTO "config" VALUES('server-code','48d0adf1afd58dae13c5b70ff7aff208fb8b9f53');
INSERT INTO "config" VALUES('project-code','8201587e22864f2fe6b8eb623626de6f9f747058');
INSERT INTO "config" VALUES('autosync','1');
INSERT INTO "config" VALUES('localauth','0');
INSERT INTO "config" VALUES('project-name','Test Case 1');
INSERT INTO "config" VALUES('project-description','Fossil repository for testing');
INSERT INTO "config" VALUES('index-page','/timeline');
INSERT INTO "config" VALUES('content-schema','1');
INSERT INTO "config" VALUES('aux-schema','2010-11-24');
CREATE TABLE shun(uuid UNIQUE);
CREATE TABLE private(rid INTEGER PRIMARY KEY);
CREATE TABLE reportfmt(
   rn integer primary key,
   owner text,
   title text,
   cols text,
   sqlcode text
);
INSERT INTO "reportfmt" VALUES(1,NULL,'All Tickets','#ffffff Key:
#f2dcdc Active
#e8e8e8 Review
#cfe8bd Fixed
#bde5d6 Tested
#cacae5 Deferred
#c8c8c8 Closed','SELECT
  CASE WHEN status IN (''Open'',''Verified'') THEN ''#f2dcdc''
       WHEN status=''Review'' THEN ''#e8e8e8''
       WHEN status=''Fixed'' THEN ''#cfe8bd''
       WHEN status=''Tested'' THEN ''#bde5d6''
       WHEN status=''Deferred'' THEN ''#cacae5''
       ELSE ''#c8c8c8'' END AS ''bgcolor'',
  substr(tkt_uuid,1,10) AS ''#'',
  datetime(tkt_mtime) AS ''mtime'',
  type,
  status,
  subsystem,
  title
FROM ticket');
CREATE TABLE concealed(
  hash TEXT PRIMARY KEY,
  content TEXT
);
CREATE TABLE filename(
  fnid INTEGER PRIMARY KEY,
  name TEXT UNIQUE
);
INSERT INTO "filename" VALUES(1,'four.txt');
INSERT INTO "filename" VALUES(2,'one.txt');
INSERT INTO "filename" VALUES(3,'three.txt');
INSERT INTO "filename" VALUES(4,'two.txt');
INSERT INTO "filename" VALUES(5,'five.txt');
INSERT INTO "filename" VALUES(6,'six.txt');
INSERT INTO "filename" VALUES(7,'two-rename.txt');
CREATE TABLE mlink(
  mid INTEGER REFERENCES blob,
  pid INTEGER REFERENCES blob,
  fid INTEGER REFERENCES blob,
  fnid INTEGER REFERENCES filename,
  pfnid INTEGER REFERENCES filename
);
INSERT INTO "mlink" VALUES(8,0,7,1,0);
INSERT INTO "mlink" VALUES(5,0,2,2,0);
INSERT INTO "mlink" VALUES(5,0,3,3,0);
INSERT INTO "mlink" VALUES(5,0,4,4,0);
INSERT INTO "mlink" VALUES(11,0,10,5,0);
INSERT INTO "mlink" VALUES(13,0,12,6,0);
INSERT INTO "mlink" VALUES(21,3,20,3,0);
INSERT INTO "mlink" VALUES(17,4,16,4,0);
INSERT INTO "mlink" VALUES(15,2,14,2,0);
INSERT INTO "mlink" VALUES(24,0,23,1,0);
INSERT INTO "mlink" VALUES(24,2,0,2,0);
INSERT INTO "mlink" VALUES(26,2,25,2,0);
INSERT INTO "mlink" VALUES(30,4,29,7,0);
INSERT INTO "mlink" VALUES(28,3,27,3,0);
INSERT INTO "mlink" VALUES(28,4,4,7,4);
INSERT INTO "mlink" VALUES(28,4,0,4,0);
INSERT INTO "mlink" VALUES(32,4,31,4,0);
CREATE TABLE plink(
  pid INTEGER REFERENCES blob,
  cid INTEGER REFERENCES blob,
  isprim BOOLEAN,
  mtime DATETIME,
  UNIQUE(pid, cid)
);
INSERT INTO "plink" VALUES(5,8,1,2455542.12795139);
INSERT INTO "plink" VALUES(1,5,1,2455542.12638889);
INSERT INTO "plink" VALUES(5,11,1,2455542.12873843);
INSERT INTO "plink" VALUES(5,13,1,2455542.1294213);
INSERT INTO "plink" VALUES(17,21,1,2455542.13335648);
INSERT INTO "plink" VALUES(15,17,1,2455542.13015046);
INSERT INTO "plink" VALUES(5,15,1,2455542.12998843);
INSERT INTO "plink" VALUES(5,24,1,2455542.13467593);
INSERT INTO "plink" VALUES(5,26,1,2455542.13571759);
INSERT INTO "plink" VALUES(28,30,1,2455542.13659722);
INSERT INTO "plink" VALUES(26,28,1,2455542.13622685);
INSERT INTO "plink" VALUES(11,32,1,2455542.19482639);
CREATE TABLE event(
  type TEXT,
  mtime DATETIME,
  objid INTEGER PRIMARY KEY,
  tagid INTEGER,
  uid INTEGER REFERENCES user,
  bgcolor TEXT,
  euser TEXT,
  user TEXT,
  ecomment TEXT,
  comment TEXT,
  brief TEXT,
  omtime DATETIME
);
INSERT INTO "event" VALUES('ci',2455542.1246875,1,NULL,NULL,NULL,NULL,'drh',NULL,'initial empty check-in',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.12638889,5,NULL,NULL,NULL,NULL,'drh',NULL,'add three initial files',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.12795139,8,NULL,NULL,NULL,NULL,'drh',NULL,'add four.txt',NULL,2455542.12795139);
INSERT INTO "event" VALUES('ci',2455542.12873843,11,NULL,NULL,NULL,NULL,'drh',NULL,'add five.txt',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.1294213,13,NULL,NULL,NULL,NULL,'drh',NULL,'add six.txt',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.12998843,15,NULL,NULL,NULL,NULL,'drh',NULL,'changes to one.txt',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.13015046,17,NULL,NULL,NULL,NULL,'drh',NULL,'changes to two.txt',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.13335648,21,NULL,NULL,NULL,NULL,'drh',NULL,'changes to three.txt',NULL,2455542.13335648);
INSERT INTO "event" VALUES('ci',2455542.13467593,24,NULL,NULL,NULL,NULL,'drh',NULL,'drop one; add new four',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.13571759,26,NULL,NULL,NULL,NULL,'drh',NULL,'change one',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.13622685,28,NULL,NULL,NULL,NULL,'drh',NULL,'edit three; rename two',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.13659722,30,NULL,NULL,NULL,NULL,'drh',NULL,'edit two-rename',NULL,NULL);
INSERT INTO "event" VALUES('ci',2455542.19482639,32,NULL,NULL,NULL,NULL,'drh',NULL,'edit two',NULL,NULL);
CREATE TABLE phantom(
  rid INTEGER PRIMARY KEY
);
CREATE TABLE orphan(
  rid INTEGER PRIMARY KEY,
  baseline INTEGER
);
CREATE TABLE unclustered(
  rid INTEGER PRIMARY KEY
);
INSERT INTO "unclustered" VALUES(1);
INSERT INTO "unclustered" VALUES(2);
INSERT INTO "unclustered" VALUES(3);
INSERT INTO "unclustered" VALUES(4);
INSERT INTO "unclustered" VALUES(5);
INSERT INTO "unclustered" VALUES(6);
INSERT INTO "unclustered" VALUES(7);
INSERT INTO "unclustered" VALUES(8);
INSERT INTO "unclustered" VALUES(9);
INSERT INTO "unclustered" VALUES(10);
INSERT INTO "unclustered" VALUES(11);
INSERT INTO "unclustered" VALUES(12);
INSERT INTO "unclustered" VALUES(13);
INSERT INTO "unclustered" VALUES(14);
INSERT INTO "unclustered" VALUES(15);
INSERT INTO "unclustered" VALUES(16);
INSERT INTO "unclustered" VALUES(17);
INSERT INTO "unclustered" VALUES(18);
INSERT INTO "unclustered" VALUES(19);
INSERT INTO "unclustered" VALUES(20);
INSERT INTO "unclustered" VALUES(21);
INSERT INTO "unclustered" VALUES(22);
INSERT INTO "unclustered" VALUES(23);
INSERT INTO "unclustered" VALUES(24);
INSERT INTO "unclustered" VALUES(25);
INSERT INTO "unclustered" VALUES(26);
INSERT INTO "unclustered" VALUES(27);
INSERT INTO "unclustered" VALUES(28);
INSERT INTO "unclustered" VALUES(29);
INSERT INTO "unclustered" VALUES(30);
INSERT INTO "unclustered" VALUES(31);
INSERT INTO "unclustered" VALUES(32);
CREATE TABLE unsent(
  rid INTEGER PRIMARY KEY
);
INSERT INTO "unsent" VALUES(31);
INSERT INTO "unsent" VALUES(32);
CREATE TABLE tag(
  tagid INTEGER PRIMARY KEY,
  tagname TEXT UNIQUE
);
INSERT INTO "tag" VALUES(1,'bgcolor');
INSERT INTO "tag" VALUES(2,'comment');
INSERT INTO "tag" VALUES(3,'user');
INSERT INTO "tag" VALUES(4,'date');
INSERT INTO "tag" VALUES(5,'hidden');
INSERT INTO "tag" VALUES(6,'private');
INSERT INTO "tag" VALUES(7,'cluster');
INSERT INTO "tag" VALUES(8,'branch');
INSERT INTO "tag" VALUES(9,'closed');
INSERT INTO "tag" VALUES(10,'sym-trunk');
INSERT INTO "tag" VALUES(11,'sym-baseline');
INSERT INTO "tag" VALUES(12,'sym-br1');
INSERT INTO "tag" VALUES(13,'sym-br2');
INSERT INTO "tag" VALUES(14,'sym-br3');
INSERT INTO "tag" VALUES(15,'sym-chng1');
INSERT INTO "tag" VALUES(16,'sym-chng2');
INSERT INTO "tag" VALUES(17,'sym-chng3');
INSERT INTO "tag" VALUES(18,'sym-br4');
INSERT INTO "tag" VALUES(19,'sym-br5');
CREATE TABLE tagxref(
  tagid INTEGER REFERENCES tag,
  tagtype INTEGER,
  srcid INTEGER REFERENCES blob,
  origid INTEGER REFERENCES blob,
  value TEXT,
  mtime TIMESTAMP,
  rid INTEGER REFERENCE blob,
  UNIQUE(rid, tagid)
);
INSERT INTO "tagxref" VALUES(8,2,1,1,'trunk',2455542.1246875,1);
INSERT INTO "tagxref" VALUES(10,2,1,1,NULL,2455542.1246875,1);
INSERT INTO "tagxref" VALUES(4,1,6,5,'2010-12-11 15:02:00',2455542.12704861,5);
INSERT INTO "tagxref" VALUES(11,1,6,5,NULL,2455542.12704861,5);
INSERT INTO "tagxref" VALUES(8,2,0,1,'trunk',2455542.1246875,5);
INSERT INTO "tagxref" VALUES(10,2,0,1,NULL,2455542.1246875,5);
INSERT INTO "tagxref" VALUES(8,2,9,8,'br1',2455542.1281713,8);
INSERT INTO "tagxref" VALUES(12,2,9,8,NULL,2455542.1281713,8);
INSERT INTO "tagxref" VALUES(4,1,9,8,'2010-12-11 15:04:15',2455542.1281713,8);
INSERT INTO "tagxref" VALUES(10,0,9,8,NULL,2455542.1281713,8);
INSERT INTO "tagxref" VALUES(8,2,11,11,'br2',2455542.12873843,11);
INSERT INTO "tagxref" VALUES(13,2,11,11,NULL,2455542.12873843,11);
INSERT INTO "tagxref" VALUES(11,0,11,11,NULL,2455542.12873843,11);
INSERT INTO "tagxref" VALUES(10,0,11,11,NULL,2455542.12873843,11);
INSERT INTO "tagxref" VALUES(8,2,13,13,'br3',2455542.1294213,13);
INSERT INTO "tagxref" VALUES(14,2,13,13,NULL,2455542.1294213,13);
INSERT INTO "tagxref" VALUES(11,0,13,13,NULL,2455542.1294213,13);
INSERT INTO "tagxref" VALUES(10,0,13,13,NULL,2455542.1294213,13);
INSERT INTO "tagxref" VALUES(4,1,18,15,'2010-12-11 15:07:11',2455542.13072917,15);
INSERT INTO "tagxref" VALUES(15,1,18,15,NULL,2455542.13072917,15);
INSERT INTO "tagxref" VALUES(4,1,19,17,'2010-12-11 15:07:25',2455542.13090278,17);
INSERT INTO "tagxref" VALUES(16,1,19,17,NULL,2455542.13090278,17);
INSERT INTO "tagxref" VALUES(8,2,0,1,'trunk',2455542.1246875,15);
INSERT INTO "tagxref" VALUES(8,2,0,1,'trunk',2455542.1246875,17);
INSERT INTO "tagxref" VALUES(8,2,0,1,'trunk',2455542.1246875,21);
INSERT INTO "tagxref" VALUES(10,2,0,1,NULL,2455542.1246875,15);
INSERT INTO "tagxref" VALUES(10,2,0,1,NULL,2455542.1246875,17);
INSERT INTO "tagxref" VALUES(10,2,0,1,NULL,2455542.1246875,21);
INSERT INTO "tagxref" VALUES(4,1,22,21,'2010-12-11 15:12:02',2455542.13353009,21);
INSERT INTO "tagxref" VALUES(17,1,22,21,NULL,2455542.13353009,21);
INSERT INTO "tagxref" VALUES(8,2,24,24,'br4',2455542.13467593,24);
INSERT INTO "tagxref" VALUES(18,2,24,24,NULL,2455542.13467593,24);
INSERT INTO "tagxref" VALUES(11,0,24,24,NULL,2455542.13467593,24);
INSERT INTO "tagxref" VALUES(10,0,24,24,NULL,2455542.13467593,24);
INSERT INTO "tagxref" VALUES(8,2,26,26,'br5',2455542.13571759,26);
INSERT INTO "tagxref" VALUES(19,2,26,26,NULL,2455542.13571759,26);
INSERT INTO "tagxref" VALUES(11,0,26,26,NULL,2455542.13571759,26);
INSERT INTO "tagxref" VALUES(10,0,26,26,NULL,2455542.13571759,26);
INSERT INTO "tagxref" VALUES(8,2,0,26,'br5',2455542.13571759,28);
INSERT INTO "tagxref" VALUES(8,2,0,26,'br5',2455542.13571759,30);
INSERT INTO "tagxref" VALUES(19,2,0,26,NULL,2455542.13571759,28);
INSERT INTO "tagxref" VALUES(19,2,0,26,NULL,2455542.13571759,30);
INSERT INTO "tagxref" VALUES(8,2,0,11,'br2',2455542.12873843,32);
INSERT INTO "tagxref" VALUES(13,2,0,11,NULL,2455542.12873843,32);
CREATE TABLE backlink(
  target TEXT,
  srctype INT,
  srcid INT,
  mtime TIMESTAMP,
  UNIQUE(target, srctype, srcid)
);
CREATE TABLE attachment(
  attachid INTEGER PRIMARY KEY,
  isLatest BOOLEAN DEFAULT 0,
  mtime TIMESTAMP,
  src TEXT,
  target TEXT,
  filename TEXT,
  comment TEXT,
  user TEXT
);
CREATE TABLE ticket(
  -- Do not change any column that begins with tkt_
  tkt_id INTEGER PRIMARY KEY,
  tkt_uuid TEXT UNIQUE,
  tkt_mtime DATE,
  -- Add as many field as required below this line
  type TEXT,
  status TEXT,
  subsystem TEXT,
  priority TEXT,
  severity TEXT,
  foundin TEXT,
  private_contact TEXT,
  resolution TEXT,
  title TEXT,
  comment TEXT
);
CREATE INDEX delta_i1 ON delta(srcid);
CREATE INDEX mlink_i1 ON mlink(mid);
CREATE INDEX mlink_i2 ON mlink(fnid);
CREATE INDEX mlink_i3 ON mlink(fid);
CREATE INDEX mlink_i4 ON mlink(pid);
CREATE INDEX plink_i2 ON plink(cid,pid);
CREATE INDEX event_i1 ON event(mtime);
CREATE INDEX orphan_baseline ON orphan(baseline);
CREATE INDEX tagxref_i1 ON tagxref(tagid, mtime);
CREATE INDEX backlink_src ON backlink(srcid, srctype);
CREATE INDEX attachment_idx1 ON attachment(target, filename, mtime);
CREATE INDEX attachment_idx2 ON attachment(src);
COMMIT;
Added test/merge6.test.







































































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#
# Copyright (c) 2014 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests of the "merge" command
#

####################################################################
# TEST 1: Handle multiple merges each with one or more ADDED files #
####################################################################

test_setup
fossil ls

test merge_multi-0 {[normalize_result] eq {}}

write_file f1 "f1 line"
fossil add f1
fossil commit -m "base file"
fossil ls

test merge_multi-1 {[normalize_result] eq {f1}}

fossil update trunk
write_file f2 "f2 line"
fossil add f2
fossil commit -m "branch for file f2" -b branch_for_f2
fossil ls

test merge_multi-2 {[normalize_result] eq {f1
f2}}

fossil update trunk
write_file f3 "f3 line"
write_file f4 "f4 line"
fossil add f3
fossil add f4
fossil commit -m "branch for files f3 and f4" -b branch_for_f3_f4
fossil ls

test merge_multi-3 {[normalize_result] eq {f1
f3
f4}}

fossil update trunk
fossil merge branch_for_f2
fossil merge branch_for_f3_f4
fossil commit -m "new trunk files f2, f3, and f4 via merge"
fossil ls

test merge_multi-4 {[normalize_result] eq {f1
f2
f3
f4}}

###############################################################################

test_cleanup
Added test/merge_exe.test.





























































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Testing changes to a file's execute bit caused by a merge
#

if {$tcl_platform(platform) eq "unix"} {
  proc setx {fn isexe} {
    file attributes $fn -permissions [expr {$isexe ? "+" : "-"}]x
  }

  proc test_exe {fn expected} {
    test merge_exe-$fn {[file executable $fn]==$expected}
  }
} else {
  # WARNING: This is a hack for setting and testing a file's execute bit
  # on Windows. Never operate directly on Fossil database files like this
  # unless you really need to and really know what you're doing.

  proc query {sql} {
    return [exec $::fossilexe sqlite3 --no-repository _FOSSIL_ $sql]
  }

  proc setx {fn isexe} {
    set isexe [expr {bool($isexe)}]
    query "UPDATE vfile SET isexe=$isexe WHERE pathname='$fn'"
  }

  proc test_exe {fn expected} {
    set result [query "SELECT isexe FROM vfile WHERE pathname='$fn'"]
    test merge_exe-$fn {$result==$expected}
  }
}

test_setup

write_file f1 "line"
write_file f2 "line"
write_file f3 "line"
write_file f4 "line"
fossil addremove
setx f3 1
setx f4 1
fossil commit -m "add files"

write_file f0 "f0"
fossil add f0
setx f0 1
fossil mv --hard f1 f1n
setx f1n 1
write_file f2 "line\nline2"
setx f2 1
write_file f3 "line\nline2"
setx f3 0
setx f4 0
fossil commit -b b -m "changes"

fossil update trunk
write_file f3 "line3\nline"
fossil commit -m "edit f3"

fossil merge b
test_status_list merge_exe-mrg $RESULT {
  EXECUTABLE f1
  EXECUTABLE f2
  UNEXEC f3
  UNEXEC f4
  UPDATE f2
  MERGE f3
  RENAME f1 -> f1n
  ADDED f0
}
foreach {fn isexe} {f0 1 f1n 1 f2 1 f3 0 f4 0} {
  test_exe $fn $isexe
}

###############################################################################

test_cleanup
Added test/merge_renames.test.















































































































































































































































































































































































































































































































































































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#
# Tests for merging with renames
#
#

proc commit_id {version} {
  regexp -line {^artifact:\s+(\S+)} [fossil whatis $version] - id
  return $id
}

require_no_open_checkout

######################################
#  Test 1                            #
#  Reported: Ticket [554f44ee74e3d]  #
######################################

test_setup

write_file f1 "line"
fossil add f1
fossil commit -m "c1"
fossil tag add pivot current

write_file f1 "line2"
fossil commit -m "c2"

write_file f1 "line3"
fossil commit -m "c3"

write_file f1 "line4"
fossil commit -m "c4"

write_file f1 "line5"
fossil commit -m "c4"

write_file f1 "line6"
fossil commit -m "c4"

fossil update pivot
fossil mv --hard f1 f2
fossil commit -b rename -m "c5"

fossil merge trunk
fossil commit -m "trunk merged"

fossil update pivot
write_file f3 "someline"
fossil add f3
fossil commit -b branch2 -m "newbranch"

fossil merge trunk
test_status_list merge_renames-1 $RESULT {UPDATE f1}

######################################
#  Test 2                            #
#  Reported: Ticket [74413366fe5067] #
######################################

test_setup

write_file f1 "line"
fossil add f1
fossil commit -m "base file"
fossil tag add pivot current

write_file f2 "line2"
fossil add f2
fossil commit -m "newfile"

fossil mv --hard f2 f2new
fossil commit -m "rename"

fossil update pivot
write_file f1 "line3"
fossil commit -b branch -m "change"

fossil merge trunk
fossil commit -m "trunk merged"

fossil update trunk

fossil merge branch
test_status_list merge_renames-2 $RESULT {UPDATE f1}

######################################
#  Test 3                            #
#  Reported: Ticket [30b28cf351]     #
######################################

test_setup

write_file f1 "line"
fossil add f1
fossil commit -m "base file"
fossil tag add pivot current

write_file f2 "line2"
fossil add f2
fossil commit -m "newfile"

fossil mv --hard f2 f2new
fossil commit -m "rename"

fossil update pivot
write_file f1 "line3"
fossil commit -b branch -m "change"

fossil merge trunk
fossil commit -m "trunk merged"

fossil update trunk

fossil merge branch
test_status_list merge_renames-3 $RESULT {UPDATE f1}

######################################
#  Test 4                            #
#  Reported: Ticket [67176c3aa4]     #
######################################

test_setup

write_file f1 "f1"
fossil add f1
fossil commit -m "add f1"

write_file f1 "f1.1"
fossil commit --branch b -m "change f1"

fossil update trunk
fossil mv --hard f1 f2
fossil commit -m "f1 -> f2"

fossil merge b
test_status_list merge_renames-4-1 $RESULT {UPDATE f2}
test_file_contents merge_renames-4-2 f2 "f1.1"

######################################
#  Test 5                            #
#  Handle Rename/Add via Merge       #
######################################

test_setup

write_file f1 "old f1 line"
fossil add f1
fossil commit -m "base file"

write_file f3 "f3 line"
fossil add f3
fossil commit -m "branch file" -b branch_for_f3

fossil update trunk
fossil mv --hard f1 f2
write_file f1 "new f1 line"
fossil add f1
fossil commit -m "rename and add file with old name"

fossil update branch_for_f3
fossil merge trunk
test_status_list merge_renames-5-1 $RESULT {
  RENAME f1 -> f2
  ADDED f1
}

fossil commit -m "trunk merged, should have 3 files"

fossil ls

test merge_renames-5-2 {[normalize_result] eq {f1
f2
f3}}

#####################################
#  Test 6                           #
#  Merging a branch multiple times  #
#####################################

test_setup

write_file f1 "f1"
fossil add f1
fossil commit -m "add f1"

fossil mv --hard f1 f2
fossil commit -b b -m "f1 -> f2"

fossil update trunk
write_file f3 "f3"
write_file f4 "f4"
fossil add f3 f4
fossil ci -m "add f3, f4"

fossil mv --hard f3 f3-old
fossil mv --hard f4 f3
fossil mv --hard f3-old f4
fossil ci -m "swap f3 and f4"

write_file f1 "f1.1"
fossil commit -m "edit f1"

fossil update b
fossil merge trunk
fossil commit -m "merge trunk"

fossil update trunk
write_file f1 "f1.2"
write_file f3 "f3.1"
write_file f4 "f4.1"
fossil commit -m "edit f1, f4"

fossil update b
fossil merge trunk
test_status_list merge_renames-6-1 $RESULT {
  UPDATE f2
  UPDATE f3
  UPDATE f4
}
test_file_contents merge_renames-6-2 f2 "f1.2"
test_file_contents merge_renames-6-3 f3 "f3.1"
test_file_contents merge_renames-6-4 f4 "f4.1"

########################################################################
#  Test 7                                                              #
#  Merging with an uncommitted rename of a file that has been renamed  #
#  in the merged branch and adding a new file with the original name   #
########################################################################

test_setup

write_file f1 "f1"
fossil add f1
fossil commit -m "add f1"

fossil mv --hard f1 f2
write_file f2 "f2"
fossil commit -b b -m "f1 -> f2, edit f2"

fossil update trunk
fossil mv --hard f1 f3
write_file f1 "f1.1"
fossil add f1
fossil merge b
test_status_list merge_renames-7-1 $RESULT {UPDATE f3}
test_file_contents merge_renames-7-2 f1 "f1.1"
test_file_contents merge_renames-7-3 f3 "f2"

######################################################
#  Test 8                                            #
#  Merging two branches that both add the same file  #
######################################################

test_setup

write_file f1 "f1.1"
fossil add f1
fossil commit -b b1 -m "add f1"

fossil update trunk
write_file f1 "f1.2"
fossil add f1
fossil commit -b b2 -m "add f1"

fossil update trunk
fossil merge b1
fossil merge b2 -expectError
test_status_list merge_renames-8-1 $RESULT {
  MERGE f1
  WARNING: 1 merge conflicts
}

fossil revert
fossil merge --integrate b1
fossil merge b2 -expectError
test_status_list merge_renames-8-2 $RESULT {
  MERGE f1
  WARNING: 1 merge conflicts
}

#############################################
#  Test 9                                   #
#  Merging a delete/rename/add combination  #
#############################################

test_setup

write_file f1 "f1"
write_file f2 "f2"
fossil add f1 f2
fossil commit -m "add files"

fossil rm --hard f2
fossil commit -b b -m "delete f2"

fossil mv --hard f1 f2
fossil commit -m "f1 -> f2"

write_file f1 "f1.1"
fossil add f1
fossil commit -m "add new f1"

fossil update trunk
fossil merge b
set expectedMerge {
  DELETE f2
  RENAME f1 -> f2
  ADDED f1
}
test_status_list merge_renames-9-1 $RESULT $expectedMerge
fossil changes
test_status_list merge_renames-9-2 $RESULT "
  MERGED_WITH [commit_id b]
  ADDED_BY_MERGE f1
  RENAMED f1  ->  f2
  DELETED f2  ->  f2 (overwritten by rename)
"
test_file_contents merge_renames-9-3 f1 "f1.1"
test_file_contents merge_renames-9-4 f2 "f1"

# Undo and ensure a dry run merge results in no changes
fossil undo
test_status_list merge_renames-9-5 $RESULT {
  UNDO f1
  UNDO f2
}
fossil merge -n b -expectError
test_status_list merge_renames-9-6 $RESULT "
  $expectedMerge
  REMINDER: this was a dry run - no files were actually changed.
"
test merge_renames-9-7 {[fossil changes] eq ""}

###################################################################
#  Test 10                                                        #
#  Merge swapped filenames, backout the swap, then merge changes  #
###################################################################

test_setup

write_file f1 "f1"
write_file f2 "f2"
fossil add f1 f2
fossil commit -m "add files" ;# N

fossil mv --hard f1 f1-tmp
fossil mv --hard f2 f1
fossil mv --hard f1-tmp f2
fossil commit -b b -m "swap f1, f2" ;# P

fossil update trunk
fossil merge b
test_status_list merge_renames-10-1 $RESULT {
  RENAME f1 -> f2
  RENAME f2 -> f1
}
test_file_contents merge_renames-10-2 f1 "f2"
test_file_contents merge_renames-10-3 f2 "f1"
fossil commit -m "merge b"

fossil update b
write_file f1 f1.1
write_file f2 f2.1
fossil commit -m "edit" ;# M

fossil update trunk
fossil merge --backout trunk
test_status_list merge_renames-10-4 $RESULT {
  RENAME f1 -> f2
  RENAME f2 -> f1
}
test_file_contents merge_renames-10-5 f1 "f1"
test_file_contents merge_renames-10-6 f2 "f2"
test_status_list merge_renames-10-7 [fossil changes] "
  RENAMED f1  ->  f2
  RENAMED f2  ->  f1
  BACKOUT [commit_id trunk]
"
fossil commit -m "swap back" ;# V

fossil merge b
test_status_list merge_renames-10-8 $RESULT {
  UPDATE f1
  UPDATE f2
}

test_file_contents merge_renames-10-9 f1 "f2.1"
test_file_contents merge_renames-10-10 f2 "f1.1"

############################################
#  Test 11                                 #
#  Specifying a baseline                   #
############################################

test_setup

write_file f1 "line"
fossil add f1
fossil commit -m "add f1"

write_file f1 "line\nline2"
fossil commit -b b -m "edit f2" --tag p1

fossil mv --hard f1 f2
fossil commit -m "f1 -> f2"

write_file f2 "line\nline2\nline3"
fossil commit -m "edit f2" --tag p2

write_file f2 "line\nline2\nline3\nline4"
fossil commit -m "edit f2"

fossil update trunk
fossil merge --baseline p1 b
test_status_list merge_renames-11-1 $RESULT {
  MERGE f1
  RENAME f1 -> f2
}
test_file_contents merge_renames-11-2 f2 "line\nline3\nline4"
fossil revert
fossil merge --baseline p2 b
test_status_list merge_renames-11-3 $RESULT {MERGE f1}
test_file_contents merge_renames-11-4 f1 "line\nline4"

#################################################################
#  Test 12                                                      #
#  Merge involving a pivot that isn't a first-parent ancestor   #
#  of either the checked-out commit or the commit being merged  #
#################################################################

test_setup

write_file f1 "f1\n"
fossil add f1
fossil commit -m "add f1" --tag n

fossil mv --hard f1 f1n
fossil commit -m "f1 -> f1n"

fossil mv --hard f1n f1v
write_file f1v "f1v\n"
fossil commit -b v -m "f1n -> f1v, edit f1v"

fossil update trunk
fossil mv --hard f1n f1m
fossil commit -b m -m "f1n -> f1m"

fossil update n
fossil mv --hard f1 f1p
write_file f1p "f1\np"
fossil commit -b p -m "f1 -> f1p, edit f1p"

fossil update m
fossil merge p
test_status_list merge_renames-12-1 $RESULT {UPDATE f1m}
test_file_contents merge_renames-12-2 f1m "f1\np"
fossil commit -m "merge p"

write_file f1m "f1\nm"
fossil commit -m "edit f1m"

fossil update v
fossil merge p
test_status_list merge_renames-12-3 $RESULT {MERGE f1v}
test_file_contents merge_renames-12-4 f1v "f1v\np"
fossil commit -m "merge p"

fossil merge m
test_status_list merge_renames-12-5 $RESULT {MERGE f1v}
test_file_contents merge_renames-12-6 f1v "f1v\nm"
fossil commit -m "merge m"

#################################################################
#  Test 13                                                      #
#  Merge in add+rename that happened on a branch, then merged   #
#  back to branch, and again to trunk, then merge in branch.    #
#################################################################

set repoDir [test_setup]
write_file f1 "line1"
fossil add f1
fossil commit -m "add f1" --tag c1

write_file f2 "line1"
fossil add f2
fossil commit -m "add f2 on branch" -b b --tag c2
fossil update trunk
test_status_list merge_renames_13-1 $RESULT {REMOVE f2}
write_file f1 "line1\nline2\n"
fossil commit -m "edit f1 on trunk" --tag c3

fossil update b
test_status_list merge_renames_13-2 $RESULT {
  UPDATE f1
  ADD f2
}
fossil merge trunk
fossil commit -m "merge trunk" --tag c4
fossil mv --hard f2 f2n
test_status_list merge_renames-13-3 $RESULT "
  RENAME f2 f2n
  MOVED_FILE [file normalize $repoDir]/f2
"
fossil commit -m "renamed f2->f2n" --tag c5

fossil update trunk
fossil merge b
test_status_list merge_renames-13-4 $RESULT {ADDED f2n}
fossil commit -m "merge f2n" --tag m1 --tag c6

fossil update b
write_file f1 "line1\nline3\nline2"
fossil commit -m "edit f1 on b" --tag c7

fossil update trunk
write_file f1 "line1\nline3\nline2\nline4"
fossil commit -m "edit f1 on trunk" --tag c8

fossil update b
fossil merge trunk
test_status_list merge_renames-13-5 $RESULT {MERGE f1}
fossil commit -m "merge trunk" --tag c9
write_file f1 "line1\nline3\nline4"
fossil commit -m "edit f1 on b" --tag c10

fossil update m1
fossil merge b
test_status_list merge_renames-13-6 $RESULT {
  UPDATE f1
}
test_file_contents merge_renames-13-7 f2n "line1"

fossil revert
test_status_list merge_renames-13-8 $RESULT {
  REVERT f1
}
fossil update trunk
fossil merge --integrate b
test_status_list merge_renames-13-9 $RESULT {
  UPDATE f1
}
test_file_contents merge_renames-13-10 f2n "line1"

fossil revert
test_status_list merge_renames-13-11 $RESULT {
  REVERT f1
}

######################################
#
# Tests for troubles not specifically linked with renames but that I'd like to
# write:
#  [c26c63eb1b] - 'merge --backout' does not handle conflicts properly
#  [953031915f] - Lack of warning when overwriting extra files
#  [4df5f38f1e] - Troubles merging a file delete with a file change

###############################################################################

test_cleanup
Added test/merge_renames_2.test.



























































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#
# Tests for merging with renames
#
#

proc commit_id {version} {
  regexp -line {^artifact:\s+(\S+)} [fossil whatis $version] - id
  return $id
}

require_no_open_checkout

#################################################################
#  Test 1                                                       #
#  https://fossil-scm.org/forum/forumpost/549700437b            #
#################################################################

test_setup

write_file file1 "file1\n"
fossil add file1
fossil commit -m "added file1"

write_file file2 "file2\n"
fossil add file2
fossil commit -m "added file2" --branch added

write_file file2 "edit file2 on added\n"
fossil commit -m "edited file2"

fossil mv --hard file2 file2.renamed
fossil commit -m "renamed file2" --branch renamed

fossil branch new branched current

write_file file2.renamed "edit file2.renamed on renamed\n"
fossil commit -m "edited file2.renamed"

fossil update trunk
fossil merge renamed
fossil commit -m "merged from renamed"

write_file file2.renamed "edit file2.renamed on trunk (1)\n"
fossil commit -m "edited file2.renamed on trunk (1)"

fossil update branched
fossil merge trunk
test_status_list merge_renames_2-1.1 $RESULT {UPDATE file2.renamed}
fossil commit -m "merged edit from trunk (1:this merge succeeded)"

fossil update trunk
write_file file2.renamed "edit2 file2.renamed on trunk (2)\n"
fossil commit -m "edited file2.renamed on trunk (2)"

fossil update branched
fossil merge trunk
test_status_list merge_renames_2-1.2 $RESULT {UPDATE file2.renamed}

test_cleanup
Added test/merge_warn.test.




























































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Testing "merge" command warnings
#

test_setup

write_file f1 "f1"
fossil add f1
fossil commit -m "add f1" --tag pivot

write_file f2 "f2"
fossil add f2
fossil commit -m "add f2"

fossil update pivot
fossil rm --hard f1
write_file f2 "f2.1"
write_file f3 "f3"
fossil add f2 f3
fossil commit -b b -m "delete f1, add f2 and f3" --tag mrg

write_file f4 "f4"
fossil add f4
fossil commit -m "add f4"

fossil update trunk
write_file f1 "f1.1"
write_file f3 "f3.1"
fossil merge --integrate mrg -expectError
test_status_list merge_warn-1 $RESULT {
  WARNING: 1 unmanaged files were overwritten
  WARNING: 2 merge conflicts
  DELETE f1
  MERGE f2
  ADDED f3 (overwrites an unmanaged file), original copy backed up locally
  WARNING: local edits lost for f1
}
test merge_warn-2 {
  [string first "ignoring --integrate: mrg is not a leaf" $RESULT]>=0
}

###############################################################################

test_cleanup
Added test/mv-rm.test.






















































































































































































































































































































































































































































































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#
# Copyright (c) 2011 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# MV / RM Commands
#

set path [file dirname [info script]]

require_no_open_checkout

########################################
# Setup: Add Files and Commit          #
########################################

test_setup; set rootDir [file normalize [pwd]]

set undoMsg "\n \"fossil undo\" is\
available to undo changes to the\
working checkout."

write_file f1 "f1"
write_file f2 "f2"
write_file f3 "f3"
write_file f4 "f4"
write_file f5 "f5"
write_file f6 "f6"
write_file f7 "f7"
write_file f8 "f8"

file mkdir [file join $rootDir subdirA]
# NOTE: There are no files in subdirA.

file mkdir [file join $rootDir subdirB]
write_file [file join $rootDir subdirB f9] "f9"

file mkdir [file join $rootDir subdirC]
write_file [file join $rootDir subdirC f10] "f10"
write_file [file join $rootDir subdirC f11] "f11"
write_file f12 "f12"

file mkdir [file join $rootDir subdirE a]
write_file [file join $rootDir subdirE a f14] "f14"

fossil add f1 f2 f3 f4 f5 f6 f7 f8 subdirB/f9 subdirC/f10 subdirC/f11 f12
fossil add subdirE/a/f14
fossil commit -m "c1"

########################################
# Test 1: Soft Move Relative Directory #
########################################

file mkdir [file join $rootDir subdir1]
cd [file join $rootDir subdir1]

fossil mv ../f1 .
test mv-soft-relative-1 {$RESULT eq "RENAME f1 subdir1/f1"}

fossil revert
test mv-soft-relative-2 {
  [normalize_result] eq "DELETE   subdir1/f1\nREVERT   f1${undoMsg}"
}

cd $rootDir

###################################
# Test 2: Soft Move Relative File #
###################################

file mkdir [file join $rootDir subdir2]
cd [file join $rootDir subdir2]

fossil mv ../f2 ./f2
test mv-soft-relative-3 {$RESULT eq "RENAME f2 subdir2/f2"}

fossil revert
test mv-soft-relative-4 {
  [normalize_result] eq "DELETE   subdir2/f2\nREVERT   f2${undoMsg}"
}

cd $rootDir

########################################
# Test 3: Hard Move Relative Directory #
########################################

file mkdir [file join $rootDir subdir3]
cd [file join $rootDir subdir3]

fossil mv --hard ../f3 .
test mv-hard-relative-1 {
  [normalize_result] eq "RENAME f3 subdir3/f3\nMOVED_FILE ${rootDir}/f3"
}

fossil revert
test mv-hard-relative-2 {
  [normalize_result] eq "DELETE   subdir3/f3\nREVERT   f3${undoMsg}"
}

cd $rootDir

###################################
# Test 4: Hard Move Relative File #
###################################

file mkdir [file join $rootDir subdir4]
cd [file join $rootDir subdir4]

fossil mv --hard ../f4 ./f4
test mv-hard-relative-3 {
  [normalize_result] eq "RENAME f4 subdir4/f4\nMOVED_FILE ${rootDir}/f4"
}

fossil revert
test mv-hard-relative-4 {
  [normalize_result] eq "DELETE   subdir4/f4\nREVERT   f4${undoMsg}"
}

cd $rootDir

########################################
# Test 5: Soft Move Absolute Directory #
########################################

file mkdir [file join $rootDir subdir5]
cd [file join $rootDir subdir5]

fossil mv [file join $rootDir f5] [file join $rootDir subdir5]
test mv-soft-absolute-1 {$RESULT eq "RENAME f5 subdir5/f5"}

fossil revert
test mv-soft-absolute-2 {
  [normalize_result] eq "DELETE   subdir5/f5\nREVERT   f5${undoMsg}"
}

cd $rootDir

###################################
# Test 6: Soft Move Absolute File #
###################################

file mkdir [file join $rootDir subdir6]
cd [file join $rootDir subdir6]

fossil mv [file join $rootDir f6] [file join $rootDir subdir6 f6]
test mv-soft-absolute-3 {$RESULT eq "RENAME f6 subdir6/f6"}

fossil revert
test mv-soft-absolute-4 {
  [normalize_result] eq "DELETE   subdir6/f6\nREVERT   f6${undoMsg}"
}

cd $rootDir

########################################
# Test 7: Hard Move Absolute Directory #
########################################

file mkdir [file join $rootDir subdir7]
cd [file join $rootDir subdir7]

fossil mv --hard [file join $rootDir f7] [file join $rootDir subdir7]
test mv-hard-absolute-1 {
  [normalize_result] eq "RENAME f7 subdir7/f7\nMOVED_FILE ${rootDir}/f7"
}

fossil revert
test mv-hard-absolute-2 {
  [normalize_result] eq "DELETE   subdir7/f7\nREVERT   f7${undoMsg}"
}

cd $rootDir

###################################
# Test 8: Hard Move Absolute File #
###################################

file mkdir [file join $rootDir subdir8]
cd [file join $rootDir subdir8]

fossil mv --hard [file join $rootDir f8] [file join $rootDir subdir8 f8]
test mv-hard-absolute-3 {
  [normalize_result] eq "RENAME f8 subdir8/f8\nMOVED_FILE ${rootDir}/f8"
}

fossil revert
test mv-hard-absolute-4 {
  [normalize_result] eq "DELETE   subdir8/f8\nREVERT   f8${undoMsg}"
}

cd $rootDir

##########################################
# Test 9: Soft Remove Relative Directory #
##########################################

file mkdir [file join $rootDir subdir1]
cd [file join $rootDir subdir1]

fossil rm ../subdirA
test rm-soft-relative-1 {$RESULT eq ""}

fossil rm ../subdirB
test rm-soft-relative-2 {$RESULT eq "DELETED subdirB/f9"}

fossil rm ../subdirC
test rm-soft-relative-3 {
  [normalize_result] eq "DELETED subdirC/f10\nDELETED subdirC/f11"
}

fossil revert
test rm-soft-relative-4 {
  [normalize_result] eq \
  "REVERT   subdirB/f9\nREVERT   subdirC/f10\nREVERT   subdirC/f11${undoMsg}"
}

cd $rootDir

######################################
# Test 10: Soft Remove Relative File #
######################################

file mkdir [file join $rootDir subdir2]
cd [file join $rootDir subdir2]

fossil rm ../f2
test rm-soft-relative-5 {$RESULT eq "DELETED f2"}

fossil revert
test rm-soft-relative-6 {
  [normalize_result] eq "REVERT   f2${undoMsg}"
}

cd $rootDir

###########################################
# Test 11: Hard Remove Relative Directory #
###########################################

file mkdir [file join $rootDir subdir3]
cd [file join $rootDir subdir3]

fossil rm --hard ../subdirA
test rm-hard-relative-1 {
  [normalize_result] eq ""
}

fossil rm --hard ../subdirB
test rm-hard-relative-2 {
  [normalize_result] eq \
  "DELETED subdirB/f9\nDELETED_FILE ${rootDir}/subdirB/f9"
}

fossil rm --hard ../subdirC
test rm-hard-relative-3 {
  [normalize_result] eq \
  "DELETED subdirC/f10\nDELETED subdirC/f11\nDELETED_FILE\
${rootDir}/subdirC/f10\nDELETED_FILE ${rootDir}/subdirC/f11"
}

fossil revert
test rm-hard-relative-4 {
  [normalize_result] eq \
  "REVERT   subdirB/f9\nREVERT   subdirC/f10\nREVERT   subdirC/f11${undoMsg}"
}

cd $rootDir

######################################
# Test 12: Hard Remove Relative File #
######################################

file mkdir [file join $rootDir subdir4]
cd [file join $rootDir subdir4]

fossil rm --hard ../f4
test rm-hard-relative-5 {
  [normalize_result] eq "DELETED f4\nDELETED_FILE ${rootDir}/f4"
}

fossil revert
test rm-hard-relative-6 {
  [normalize_result] eq "REVERT   f4${undoMsg}"
}

cd $rootDir

###########################################
# Test 13: Soft Remove Absolute Directory #
###########################################

file mkdir [file join $rootDir subdir5]
cd [file join $rootDir subdir5]

fossil rm [file join $rootDir subdirA]
test rm-soft-absolute-1 {$RESULT eq ""}

fossil rm [file join $rootDir subdirB]
test rm-soft-absolute-2 {$RESULT eq "DELETED subdirB/f9"}

fossil rm [file join $rootDir subdirC]
test rm-soft-absolute-3 {
  [normalize_result] eq "DELETED subdirC/f10\nDELETED subdirC/f11"
}

fossil revert
test rm-soft-absolute-4 {
  [normalize_result] eq \
  "REVERT   subdirB/f9\nREVERT   subdirC/f10\nREVERT   subdirC/f11${undoMsg}"
}

cd $rootDir

######################################
# Test 14: Soft Remove Absolute File #
######################################

file mkdir [file join $rootDir subdir6]
cd [file join $rootDir subdir6]

fossil rm [file join $rootDir f6]
test rm-soft-absolute-5 {$RESULT eq "DELETED f6"}

fossil revert
test rm-soft-absolute-6 {
  [normalize_result] eq "REVERT   f6${undoMsg}"
}

cd $rootDir

###########################################
# Test 15: Hard Remove Absolute Directory #
###########################################

file mkdir [file join $rootDir subdir7]
cd [file join $rootDir subdir7]

fossil rm --hard [file join $rootDir subdirA]
test rm-hard-absolute-1 {$RESULT eq ""}

fossil rm --hard [file join $rootDir subdirB]
test rm-hard-absolute-2 {
  [normalize_result] eq \
  "DELETED subdirB/f9\nDELETED_FILE ${rootDir}/subdirB/f9"
}

fossil rm --hard [file join $rootDir subdirC]
test rm-hard-absolute-3 {
  [normalize_result] eq \
  "DELETED subdirC/f10\nDELETED subdirC/f11\nDELETED_FILE\
${rootDir}/subdirC/f10\nDELETED_FILE ${rootDir}/subdirC/f11"
}

fossil revert
test rm-hard-absolute-4 {
  [normalize_result] eq \
  "REVERT   subdirB/f9\nREVERT   subdirC/f10\nREVERT   subdirC/f11${undoMsg}"
}

cd $rootDir

######################################
# Test 16: Hard Remove Absolute File #
######################################

file mkdir [file join $rootDir subdir8]
cd [file join $rootDir subdir8]

fossil rm --hard [file join $rootDir f8]
test rm-hard-absolute-5 {
  [normalize_result] eq "DELETED f8\nDELETED_FILE ${rootDir}/f8"
}

fossil revert
test rm-hard-absolute-6 {
  [normalize_result] eq "REVERT   f8${undoMsg}"
}

cd $rootDir

#######################################
# Test 17: Move File to New Directory #
#######################################

fossil mv --hard f12 d2/f13
test mv-file-new-directory-1 {
  [normalize_result] eq "RENAME f12 d2/f13\nMOVED_FILE ${rootDir}/f12"
}

test mv-file-new-directory-2 {[file size d2/f13] == 3}
test mv-file-new-directory-3 {[read_file d2/f13] eq "f12"}

fossil revert
test mv-file-new-directory-4 {
  [normalize_result] eq "DELETE   d2/f13\nREVERT   f12${undoMsg}"
}

test mv-file-new-directory-5 {[file size f12] == 3}
test mv-file-new-directory-6 {[read_file f12] eq "f12"}

cd $rootDir

############################################
# Test 18: Move Directory to New Directory #
############################################

fossil mv --hard subdirC subdirD
test mv-file-new-directory-7 {
  [normalize_result] eq "RENAME subdirC/f10 subdirD/f10\nRENAME subdirC/f11 subdirD/f11\nMOVED_FILE ${rootDir}/subdirC/f10\nMOVED_FILE ${rootDir}/subdirC/f11"
}

test mv-file-new-directory-8 {[file size subdirD/f10] == 3}
test mv-file-new-directory-9 {[read_file subdirD/f10] eq "f10"}
test mv-file-new-directory-10 {[file size subdirD/f11] == 3}
test mv-file-new-directory-11 {[read_file subdirD/f11] eq "f11"}

fossil revert
test mv-file-new-directory-12 {
  [normalize_result] eq "DELETE   subdirD/f10\nDELETE   subdirD/f11\nREVERT   subdirC/f10\nREVERT   subdirC/f11${undoMsg}"
}

test mv-file-new-directory-13 {[file size subdirC/f10] == 3}
test mv-file-new-directory-14 {[read_file subdirC/f10] eq "f10"}
test mv-file-new-directory-15 {[file size subdirC/f11] == 3}
test mv-file-new-directory-16 {[read_file subdirC/f11] eq "f11"}

cd $rootDir

###############################################################################
# Test 19: Follow-up Soft Rename of a Directory Already Renamed on Filesystem #
###############################################################################

file rename [file join $rootDir subdirE/a] [file join $rootDir subdirE/a_renamed]

fossil mv subdirE/a subdirE/a_renamed
test mv-soft-already-renamed-directory-1 {
  [normalize_result] eq "RENAME subdirE/a/f14 subdirE/a_renamed/f14"
}

test mv-soft-already-renamed-directory-2 {[file size subdirE/a_renamed/f14] == 3}
test mv-soft-already-renamed-directory-3 {[read_file subdirE/a_renamed/f14] eq "f14"}

fossil revert
test mv-soft-already-renamed-directory-4 {
  [normalize_result] eq "DELETE   subdirE/a_renamed/f14\nREVERT   subdirE/a/f14${undoMsg}"
}

test mv-soft-already-renamed-directory-5 {[file size subdirE/a/f14] == 3}
test mv-soft-already-renamed-directory-6 {[read_file subdirE/a/f14] eq "f14"}

file delete -force [file join $rootDir subdirE/a_renamed]

cd $rootDir

###############################################################################

test_cleanup
Added test/release-checklist.wiki.

























































































































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<title>Release Checklist</title>

This file describes the testing procedures for Fossil prior to an
official release.

<ol>
<li><p>
From within a checkout of the Fossil tree, display this file with 
the command "<b>fossil ui --page doc/ckout/test/release-checklist.wiki</b>".
That is the only way the links below will work.

<li><p>
From a private directory (not the source tree) run
"<b>tclsh $SRC/test/tester.tcl $FOSSIL</b>" where $FOSSIL is the
name of the executable under test and $SRC is the source tree.
Verify that there are no errors.

<li><p>
Click on each of the links in in the
[./graph-test-1.wiki] document and verify that all graphs are
rendered correctly.

<li><p>
Click on each of the links in in the
[./graph-test-2.md] document and verify that all graphs are
rendered correctly.
<ol type="a">
<li> Also view the same check-ins on a /timeline
view by clicking on the date for each check-in in the /info
view, as the graph rendering is slightly different.
</ol>

<li><p>
Click on each of the links in in the
[./diff-test-1.wiki] document and verify that all diffs are
rendered correctly.

<li><p>
Click on the following link to verify that it works: [./test-page%2b%2b.wiki | ./test-page++.wiki]
(NB:  Many web servers automatically block
or rewrite URLs that contain "+" characters, even when those "+"
characters are encoded as "%2B".  On such web servers, the URL
above will not work.  This test is only guaranteed to work
when running "fossil ui".)

<li><p>
Shift-click on each of the links in [./fileage-test-1.wiki] and verify
correct operation of the file-age computation.

<li><p>
Verify correct name-change tracking behavior (no net changes) for:
<pre><b>fossil test-name-changes --debug  b120bc8b262ac 374920b20944b
</b></pre>

<li><p>
Compile for all of the following platforms:
<ol type="a">
<li> Linux x86
<li> Linux x86_64
<li> Mac x86
<li> Mac x86_64
<li> Windows (mingw)
<li> Windows (vc++)
<li> OpenBSD
</ol>

<li><p>
Run at least one occurrence of the following commands on every
platform:
<ol type="a">
<li> <b>fossil rebuild</b>
<li> <b>fossil sync</b>
<li> <b>fossil test-integrity</b>
</ol>

<li><p>
Run the following commands on Linux and verify no major memory leaks
and no run-time errors or warnings (except for the well-known jump on an
uninitialized value that occurs within zlib).</p>
<ol type="a">
<li> <b>valgrind fossil rebuild</b>
<li> <b>valgrind fossil sync</b>
</ol>

<p>Achtung: make sure to point valgrind to the proper fossil binary
so that it does not pick up another from the PATH.</p>


<li><p>

Inspect [http://fossil-scm.org/home/vdiff?from=release&to=trunk&sbs=1|all code changes since the previous release], paying particular
attention to the following details:
<ol type="a">
<li> Can a malicious HTTP request cause a buffer overrun.
<li> Can a malicious HTTP request expose privileged information to
     unauthorized users.
</ol>


<li><p>
Use the release candidate version of fossil in production on the
[http://fossil-scm.org/] website for at least 48 hours (without
incident) prior to making the release official.

<li><p>
Verify that the minimum SQLite version requirement is up-to-date:
<ol type="a">
<li> Check the version number in the line starting "define MINIMUM_SQLITE_VERSION" near the top of [/file?name=auto.def&ci=tip | auto.def]
<li> Check the output of <b>./configure --print-minimum-sqlite-version</b>
</ol>

<li><p>
Verify that the [../www/changes.wiki | Change Log] is correct and
up-to-date.
</ol>

<hr>

Upon successful completion of all tests above, tag the release candidate
with the "release" tag and set its background color to "#d0c0ff".  Update
the www/changes.wiki file to show the date of the release.
Added test/reserved-names.test.

























































































































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#
# Copyright (c) 2020 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests for reserved names.
#

test_setup

###############################################################################

set reserved_names_tests [list \
    {0 {}} \
    {0 a.fslckout} \
    {1 .fslckout} \
    {1 .FSlckOUT} \
    {2 a/.fslckout} \
    {0 .fslckout/b} \
    {0 fslckout} \
    {0 .fslckoutx} \
    {1 _FOSSIL_} \
    {0 _FOSSIL} \
    {0 FOSSIL_} \
    {0 FOSSIL_} \
    {0 a_FOSSIL_} \
    {0 _FOSSIL__} \
    {0 __FOSSIL__} \
    {0 __FOssIL__} \
    {0 _FOSSIL_/a} \
    {2 a/_FOSSIL_} \
    {2 _FOSSIL_/c/.fslckout} \
    {2 _FOSSIL_/c/.fslckout/_FOSSIL_} \
    {0 _FOSSIL_/c/.fslckout/._FOSSIL_t} \
    {0 _FOSSIL_/c/.fslckout/t._FOSSIL_} \
    {0 a} \
    {0 a/b} \
    {0 a/b/c} \
    {0 a/b/c/} \
    {0 a/_FOSSIL/} \
    {0 a/fslckout/} \
    {0 a/_fslckout/} \
    {0 _FOSSIL-wal} \
    {0 _FOSSIL-shm} \
    {0 _FOSSIL-journal} \
    {0 _FOSSIL_-wal/a} \
    {0 _FOSSIL_-shm/a} \
    {0 _FOSSIL_-journal/a} \
    {1 _FOSSIL_-wal} \
    {1 _FOSSIL_-shm} \
    {1 _FOSSIL_-journal} \
    {2 a/_FOSSIL_-wal} \
    {2 a/_FOSSIL_-shm} \
    {2 a/_FOSSIL_-journal} \
    {0 .fslckout-wal/a} \
    {0 .fslckout-shm/a} \
    {0 .fslckout-journal/a} \
    {1 .fslckout-wal} \
    {1 .fslckout-shm} \
    {1 .fslckout-journal} \
    {2 a/.fslckout-wal} \
    {2 a/.fslckout-shm} \
    {2 a/.fslckout-journal} \
]

###############################################################################

set testNo 0

foreach reserved_names_test $reserved_names_tests {
  incr testNo

  set reserved_result [lindex $reserved_names_test 0]
  set reserved_name [lindex $reserved_names_test 1]

  fossil test-is-reserved-name $reserved_name

  test reserved-result-$testNo {
    [lindex [normalize_result] 0] eq $reserved_result
  }

  test reserved-name-$testNo {
    [lindex [normalize_result] 1] eq $reserved_name
  }

  fossil test-is-reserved-name [string toupper $reserved_name]

  test reserved-result-upper-$testNo {
    [lindex [normalize_result] 0] eq $reserved_result
  }

  test reserved-name-upper-$testNo {
    [lindex [normalize_result] 1] eq [string toupper $reserved_name]
  }

  fossil test-is-reserved-name [string tolower $reserved_name]

  test reserved-result-lower-$testNo {
    [lindex [normalize_result] 0] eq $reserved_result
  }

  test reserved-name-lower-$testNo {
    [lindex [normalize_result] 1] eq [string tolower $reserved_name]
  }
}

###############################################################################

test_cleanup
Added test/revert.test.






































































































































































































































































































































































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#
# Copyright (c) 2013 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
#
# Tests for 'fossil revert'
#
#

# Test 'fossil revert' against expected results from 'fossil changes' and
# 'fossil addremove -n', as well as by verifying the existence of files
# on the file system. 'fossil undo' is called after each test
#
proc revert-test {testid revertArgs expectedRevertOutput args} {
  global RESULT
  set passed 1

  set args [dict merge {
    -changes {} -addremove {} -exists {} -notexists {}
  } $args]

  set result [fossil revert {*}$revertArgs]
  test_status_list revert-$testid $result $expectedRevertOutput

  set statusListTests [list -changes changes -addremove {addremove -n}]
  foreach {key fossilArgs} $statusListTests {
    set expected [dict get $args $key]
    set result [fossil {*}$fossilArgs]
    test_status_list revert-$testid$key $result $expected
  }

  set fileExistsTests [list -exists 1 does -notexists 0 should]
  foreach {key expected verb} $fileExistsTests {
    foreach path [dict get $args $key] {
      if {[file exists $path] != $expected} {
        set passed 0
        protOut "  Failure: File $verb not exist: $path"
      }
    }
    test revert-$testid$key $passed
  }

  fossil undo
}

require_no_open_checkout
test_setup

# Prepare first commit
#
write_file f1 "f1"
write_file f2 "f2"
write_file f3 "f3"
fossil add f1 f2 f3
fossil commit -m "c1"

# Make changes to be reverted
#
# Add f0
write_file f0 "f0"
fossil add f0
# Remove f1
file delete f1
fossil rm f1
# Edit f2
write_file f2 "f2.1"
# Rename f3 to f3n
file rename -force f3 f3n
fossil mv f3 f3n

# Test 'fossil revert' with no arguments
#
revert-test 1-1 {} {
  UNMANAGE f0
  REVERT   f1
  REVERT   f2
  REVERT   f3
  DELETE   f3n
} -addremove {
  ADDED f0
} -exists {f0 f1 f2 f3} -notexists f3n

# Test with a single filename argument
#
revert-test 1-2 f0 {
  UNMANAGE f0
} -changes {
  DELETED f1
  EDITED f2
  RENAMED f3  ->  f3n
} -addremove {
  ADDED f0
} -exists {f0 f2 f3n} -notexists f3

revert-test 1-3 f1 {
  REVERT   f1
} -changes {
  ADDED f0
  EDITED f2
  RENAMED f3  ->  f3n
} -exists {f0 f1 f2 f3n} -notexists f3

revert-test 1-4 f2 {
  REVERT   f2
} -changes {
  ADDED f0
  DELETED f1
  RENAMED f3  ->  f3n
} -exists {f0 f2 f3n} -notexists {f1 f3}

# Both files involved in a rename are reverted regardless of which filename
# is used as an argument to 'fossil revert'
#
revert-test 1-5 f3 {
  REVERT   f3
  DELETE   f3n
} -changes {
  ADDED f0
  DELETED f1
  EDITED f2
} -exists {f0 f2 f3} -notexists {f1 f3n}

revert-test 1-6 f3n {
  REVERT   f3
  DELETE   f3n
} -changes {
  ADDED f0
  DELETED f1
  EDITED f2
} -exists {f0 f2 f3} -notexists {f1 f3n}

# Test with multiple filename arguments
#
revert-test 1-7 {f0 f2 f3n} {
  UNMANAGE f0
  REVERT   f2
  REVERT   f3
  DELETE   f3n
} -changes {
  DELETED f1
} -addremove {
  ADDED f0
} -exists {f0 f2 f3} -notexists {f1 f3n}


# Test reverting the combination of a renamed file and an added file that
# uses the renamed file's original filename.
#
test_setup
write_file f1 "f1"
fossil add f1
fossil commit -m "add f1"

write_file f1n "f1n"
fossil mv f1 f1n
write_file f1 "f1b"
fossil add f1

revert-test 2-1 {} {
  REVERT   f1
  DELETE   f1n
} -exists {f1} -notexists {f1n}


# Test reverting a rename in the repo but not completed in the file
# system
test_setup
write_file f1 "f1"
fossil add f1
fossil commit -m "add f1"
fossil mv --soft f1 f1new
test 3-mv-1 {[file exists f1]}
test 3-mv-2 {![file exists f1new]}
revert-test 3-1 {} {
  REVERT f1
  DELETE f1new
} -exists {f1} -notexists {f1n}


# Test reverting of files under a sub-directory
test_setup
file mkdir d
write_file d/f1 "d/f1"
write_file d/f2 "d/f2"
write_file d/f3 "d/f3"
write_file d/f4 "d/f4"

fossil add d
fossil delete d/f1
fossil commit -m "d/f2 d/f3 d/f4"

## Changes to revert
fossil add d/f1
write_file d/f2 "4-1:d/f2"
fossil changes d/f2
fossil delete --soft d/f3

revert-test 4-1 {d/f1} {
  UNMANAGE   d/f1
} -changes {
  EDITED  d/f2
  DELETED d/f3
} -addremove {
  ADDED   d/f1
} -exists {d/f1 d/f2 d/f3}

revert-test 4-2 {d/f2} {
  REVERT  d/f2
} -changes {
  ADDED   d/f1
  DELETED d/f3
} -exists {d/f1 d/f2 d/f3}

revert-test 4-3 {d/f3} {
  REVERT   d/f3
} -changes {
  ADDED   d/f1
  EDITED  d/f2
} -exists {d/f1 d/f2 d/f3}

fossil mv --soft d/f4 d/f4new
test 4-4-mv-1 {[file exists d/f4]}
test 4-4-mv-2 {![file exists d/f4new]}
revert-test 4-4 {d/f4} {
  DELETE   d/f4new
  REVERT   d/f4
} -changes {
  ADDED   d/f1
  EDITED  d/f2
  DELETED d/f3
} -exists {d/f4} -notexists {d/f4new}

## Commit changes before testing reverting of directory rename,
## otherwise there're could be sequencing issues
fossil redo
fossil commit -m "4-5:setup"

fossil mv --soft d dnew
revert-test 4-5 {d/f1 d/f2 d/f3 d/f4} {
  REVERT   d/f1
  REVERT   d/f2
  UNMANAGE d/f3
  REVERT   d/f4
  DELETE   dnew/f1
  DELETE   dnew/f2
  DELETE   dnew/f4
} -addremove {
  ADDED    d/f3
} -exists {d/f1 d/f2 d/f3 d/f4} -notexists {dnew}


## Test reverting of changes in whole sub-directory tree
test_setup
file mkdir d
write_file f0 "f0"
write_file d/f1 "d/f1"
write_file d/f2 "d/f2"
write_file d/f3 "d/f3"
write_file d/f4 "d/f4"

fossil add f0 d
fossil delete d/f1
fossil commit -m "f0 d/f2 d/f3 d/f4"

## Changes to revert
fossil add d/f1
write_file d/f2 "5-1:d/f2"
fossil changes d/f2
fossil delete --soft d/f3

revert-test 5-1 {d} {
  UNMANAGE d/f1
  REVERT   d/f2
  REVERT   d/f3
} -addremove {
  ADDED    d/f1
} -exists {f0 d/f1 d/f2 d/f3}

write_file f0 "5-2:f0"
fossil changes f0
revert-test 5-2 {f0 d} {
  UNMANAGE d/f1
  REVERT   d/f2
  REVERT   d/f3
  REVERT   f0
} -addremove {
  ADDED    d/f1
} -exists {f0 d/f1 d/f2 d/f3}

## Commit changes before testing the revert of directory rename,
## otherwise there're could be sequencing issues
fossil commit -m "5-3:setup"

fossil changes

fossil mv --soft d dnew
revert-test 5-3 {d} {
  REVERT   d/f1
  REVERT   d/f2
  REVERT   d/f4
  DELETE   dnew/f1
  DELETE   dnew/f2
  DELETE   dnew/f4
} -addremove {
  ADDED    d/f3
} -exists {f0 d/f1 d/f2 d/f3 d/f4} -notexists {dnew}

## Reset/redo the undone results of revert to get to a clean checkout
fossil redo

file mkdir d/e
file mkdir d/e/f
write_file d/e/fe1 "d/e/fe1"
write_file d/e/f/ff1 "d/e/f/ff1"

file mkdir d1
file mkdir d1/e
write_file d1/e/fe1 "d1/e/fe1"
write_file d1/e/fe2 "d1/e/fe2"

fossil add d1/e/fe1
fossil commit d1/e/fe1 -m "d1/e/fe1"

write_file d1/e/fe1 "5-4:d1/e/fe1"
fossil changes d1/e/fe1
fossil add d d1

revert-test 5-4 {d d1} {
  UNMANAGE d/f3
  UNMANAGE d/e/fe1
  UNMANAGE d/e/f/ff1
  REVERT   d1/e/fe1
  UNMANAGE d1/e/fe2
} -addremove {
  ADDED    d/f3
  ADDED    d/e/fe1
  ADDED    d/e/f/ff1
  ADDED    d1/e/fe2
} -exists {d/f1 d/f2 d/f3 d/f4 d/e/fe1 d/e/fe1 d/e/f/ff1
           d1/e/fe1 d1/e/fe2}


###############################################################################

test_cleanup
Added test/rewrite-test-output.tcl.





































































































































































































































































































































































































































































































































































































































































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#!/usr/bin/env tclsh

# Script to anonymise test results for comparison.
# - Replaces hashes, pids and similar with fixed strings
# - Rewrites temporary paths to standardise them in output

# Pick up options
set EXTRA 0
set i [lsearch $argv -extra]
while { $i >= 0 } {
  incr EXTRA
  set argv [lreplace $argv $i $i]
  set i [lsearch $argv -extra]
}

# With no arguments or "-", use stdin.
set fname "-"
if { [llength $argv] > 0 } {
  set fname [lindex $argv 0]
}

# Any -options, or an empty first argument, is an error.
if { [llength $argv] > 1 || [regexp {^-.+} $fname] } {
  puts stderr "Error: argument error"
  puts stderr "usage: \[-extra\] [file tail $argv0] ?FILE"
  puts stderr "       Rewrite test output to ease comparison of outputs."
  puts stderr "       With -extra, more output is rewritten as is summaries"
  puts stderr "       to make diff(1) mor euseful across runs and platforms."
  exit 1
} elseif { $fname ne "-" && ! [file exists $fname] } {
  puts stderr "File does not exist: '$fname'"
  exit 1
}

proc common_rewrites { line testname } {
  # Normalise the fossil commands with path as just fossil
  regsub {^(?:[A-Z]:)?/.*?/fossil(?:\.exe)? } $line {fossil } line
  if {[string match "Usage: *" $line]} {
    regsub {^(Usage: )/.*?/fossil(?:\.exe)? } $line {\1fossil } line
    regsub {^(Usage: )[A-Z]:\\.*?\\fossil(?:\.exe)? } $line {\1fossil } line
  }

  # Accept 40 and 64 byte hashes as such
  regsub -all {[[:<:]][0-9a-f]{40}[[:>:]]} $line HASH line
  regsub -all {[[:<:]][0-9a-f]{64}[[:>:]]} $line HASH line

  # Date and time
  regsub -all {[[:<:]]\d{4}-\d\d-\d\d \d\d:\d\d:\d\d[[:>:]]} $line {YYYY-mm-dd HH:MM:SS} line
  if { [lsearch -exact {"amend" "wiki"} $testname] >= 0 } {
    # With embedded T and milliseconds
    regsub { \d{4}-\d\d-\d\dT\d\d:\d\d:\d\d\.\d{3}$} $line { YYYY-mm-ddTHH:MM:SS.NNN} line
  }
  if { [lsearch -exact {"amend" "th1-hooks" "wiki"} $testname] >= 0 } {
    regsub {[[:<:]]\d{4}-\d\d-\d\d[[:>:]]} $line {YYYY-mm-dd} line
  }

  # Timelines have HH:MM:SS [HASH], but don't mess with the zero'ed version.
  regsub {^(?!00:00:00 \[0000000000\])\d\d:\d\d:\d\d \[[0-9a-f]{10}\] } $line {HH:MM:SS [HASH] } line

  # Temporary directories
  regsub -all {(?:[A-Z]:)?/.*?/repo_\d+/\d+_\d+} $line {/TMP/repo_PID/SEC_SEQ} line
  # Home directories only seem present with .fossil or _fossil. Simplify to .fossil.
  regsub -all {(?:[A-Z]:)?/.*?/home_\d+/[._]fossil[[:>:]]} $line {/TMP/home_PID/.fossil} line

  # Users in output
  regsub { (\(user: )[^\)]*\)$} $line { \1USER)} line

  return $line
}

#
# tests/tests_unix/tests_windows contain tuples of
#
# 1. A regular expression to match current line
# 2. A substitution for the current line
#
# Some common patterns applicable to multiples tests are appended below.
#
# The common_rewrites procedure is run first, so use e.g. HASH as needed.
#

dict set tests "amend" {
  {^(fossil artifact) [0-9a-f]{10}}
      {\1 HASH}
  {^U [^ ]+$}
      {U USER}
  {^Z [0-9a-f]{32}$}
      {Z CHECKSUM}
  {^(ed -s \./ci-comment-).*?(\.txt)$}
      {\1UNIQ\2}
  {^(fossil amend HASH -date \{?)\d\d/\d\d/\d{4}}
      {\1dd/mm/YYYY}
  {^(fossil amend HASH -date \{.* )\d{4}(\})$}
      {\1YYYY\2}
  {^(fossil amend HASH -date \{.* )\d\d:}
      {\1HH:}
  {^(fossil amend HASH -date \{)[A-Z][a-z]{2} [A-Z][a-z]{2} [ 0-9]\d }
      {\1Day Mon dd }
  {(\] Edit \[)[0-9a-f]{16}.[0-9a-f]{10}(\]: )}
      {\1HASH1|HASH2\2}
  {(\] Edit \[.*?&dp=)[0-9a-f]{16}}
      {\1dp=HASH}
}

dict set tests "cmdline" {
  {^(fossil test-echo --args) .*/}
      {\1 /TMP/}
  {^(g\.nameOfExe =) \[[^\]]+[/\\]fossil(?:\.exe)?\]$}
      {\1 [/PATH/FOSSILCMD]}
  {^(argv\[0\] =) \[[^\]]+[/\\]fossil(?:\.exe)?\]$}
      {\1 [/PATH/FOSSILCMD]}
}

dict set tests "contains-selector" {
  {^(fossil test-contains-selector) .*?/(compare-selector.css )}
      {\1 /TMP/\2}
}

dict set tests "json" {
  {^(Content-Length) \d+$}
      {\1 LENGTH}
  {^(Cookie: fossil-)[0-9a-f]{16}(\=HASH%2F)\d+\.\d+(%2Fanonymous)$}
      {\1CODE\2NOW\3}
  {^(GET /json/cap\?authToken\=HASH)/\d+\.\d+/(anonymous )}
      {\1/NOW/\2}
  {^(Cookie: fossil-)[0-9a-f]{16}\=[0-9A-F]{50}%2F[0-9a-f]{16}%2F(.*)$}
      {\1CODE=SHA1%2FCODE%2F\2}
  {("authToken":").+?(")}
      {\1AUTHTOKEN\2}
  {("averageArtifactSize":)\d+()}
      {\1SIZE\2}
  {("compiler":").+?(")}
      {\1COMPILER\2}
  {("loginCookieName":").+?(")}
      {\1COOKIE\2}
  {("manifestVersion":"\[)[0-9a-f]{10}(\]")}
      {\1HASH\2}
  {("manifestYear":")\d{4}(")}
      {\1YYYY\2}
  {("name":").+?(")}
      {\1NAME\2}
  {("password":")[0-9a-f]+(")}
      {\1PASSWORD\2}
  {("projectCode":")[0-9a-f]{40}(")}
      {\1HASH\2}
  {("procTimeMs":)\d+}
      {\1MSEC}
  {("procTimeUs":)\d+}
      {\1USEC}
  {("releaseVersion":")\d+\.\d+(")}
      {\1VERSION\2}
  {("releaseVersionNumber":")\d+(")}
      {\1VERSION_NUMBER\2}
  {("timestamp":)\d+}
      {\1SEC}
  {("seed":)\d+()}
      {\1SEED\2}
  {("uid":)\d+()}
      {\1UID\2}
  {("uncompressedArtifactSize":)\d+()}
      {\1SIZE\2}
  {("user":").+?(")}
      {\1USER\2}
  {("version":"YYYY-mm-dd HH:MM:SS )\[[0-9a-f]{10}\] \(\d+\.\d+\.\d+\)"}
      {\1[HASH] (major.minor.patch)}
  {^(Date:) [A-Z][a-z]{2}, \d\d? [A-Z][a-z]{2} \d{4} \d\d:\d\d:\d\d [-+]\d{4}$}
      {\1 Day, dd Mon YYYY HH:MM:SS TZ}
}

dict set tests "merge_renames" {
  {^(size: {7})\d+( bytes)$}
      {\1N\2}
  {^(type: {7}Check-in by ).+?( on YYYY-mm-dd HH:MM:SS)$}
      {\1USER\2}
}

dict set tests "set-manifest" {
  {^(project-code: )[0-9a-f]{40}$}
      {\1HASH} line
}

dict set tests "stash" {
  {^(---|\+\+\+) NUL$}
      {\1 /dev/null}
  {(^    1: \[)[0-9a-f]{14}(\] on YYYY-mm-dd HH:MM:SS)$}
      {\1HASH\2}
  {(^    1: \[)[0-9a-f]{14}(\] from YYYY-mm-dd HH:MM:SS)$}
      {\1HASH\2}
}

dict set tests "th1" {
  {^(fossil test-th-source) (?:[A-Z]:)?.*?/(th1-)\d+([.]th1)$}
      {\1 /TMP/\2PID\3}
  {^(?:[A-Z]:)?[/\\].*?[/\\]fossil(?:\.exe)?$}
      {/PATH/FOSSILCMD}
  {[[:<:]](Content-Security-Policy[[:>:]].*'nonce-)[0-9a-f]{48}(';)}
      {\1NONCE\2}
  {^(<link rel="stylesheet" href="/style.css\?id=)[0-9a-f]+(" type="text/css">)$}
      {\1ID\2}
  {^\d+\.\d{3}(s by)$}
      {N.MMM\1}
  {^(Fossil) \d+\.\d+ \[[0-9a-f]{10}\] (YYYY-mm-dd HH:MM:SS)$}
      {\1 N.M [HASH] \2}
  {^(<script nonce=")[0-9a-f]{48}(">/\* style\.c:)\d+}
      {\1NONCE\2LINENO}
}

dict set tests "th1-docs" {
  {^(check-ins:    ).*}
      {\1COUNT}
  {^(local-root:   ).*}
      {\1/PATH/}
  {^(repository:   ).*}
      {\1/PATH/REPO}
  {^(comment:      ).*}
      {\1/COMMENT/}
  {^(tags:         ).*}
      {\1/TAGS/}
  {(--ipaddr 127\.0\.0\.1) .*? (--localauth)}
      {\1 REPO \2}
}

dict set tests "th1-hooks" {
  {^(?:/[^:]*/fossil|[A-Z]:\\[^:]*\\fossil\.exe): (unknown command:|use \"help\")}
      {fossil: \1}
  {^(project-code: )[0-9a-f]{40}$}
      {\1HASH}
}

dict set tests "th1-tcl" {
  {^(fossil test-th-render --open-config) \{?.*?[/\\]test[/\\]([^/\\]*?)\}?$}
      {\1 /CHECKOUT/test/\2}
  {^(fossil)(?:\.exe)?( 3 \{test-th-render --open-config )(?:\{[A-Z]:)?[/\\].*?[/\\]test[/\\](th1-tcl9.txt\})\}?$}
      {\1\2/CHECKOUT/test/\3}
  {^\d{10}$}
      {SEC}
}

dict set tests "unversioned" {
  {^(fossil user new uvtester.*) \d+$}
      {\1 PASSWORD}
  {^(fossil .*http://uvtester:)\d+(@localhost:)\d+}
      {\1PASSWORD\2PORT}
  {^(Pull from http://uvtester@localhost:)\d+}
      {\1PORT}
  {^(ERROR \(1\): Usage:) .*?[/\\]fossil(?:\.exe)? (unversioned)}
      {\1 /PATH/fossil \2}
  {^(Started Fossil server, pid \")\d+(\", port \")\d+}
      {\1PID\2PORT}
  {^(Now in client directory \")(?:[A-Z]:)?/.*?/uvtest_\d+_\d+\"}
      {\1/TMP/uvtest_SEC_SEQ}
  {^(Stopped Fossil server, pid \")\d+(\", using argument \")(?:\d+|[^\"]*\.stopper)(\")}
      {\1PID\2PID_OR_SCRIPT\3}
  {^(This is unversioned file #4\.) \d+ \d+}
      {\1 PID SEC}
  {^(This is unversioned file #4\. PID SEC) \d+ \d+}
      {\1 PID SEC}
  {^[0-9a-f]{12}( YYYY-mm-dd HH:MM:SS *)(\d+)( *)\2( unversioned4.txt)$}
      {HASH        \1SZ\3SZ\4}
  {^[0-9a-f]{40}$}
      {\1HASH}
  {^((?:Clone|Pull)? done, wire bytes sent: )\d+(  received: )\d+(  remote: )(?:127\.0.0\.1|::1)$}
      {\1SENT\2RECV\3LOCALIP}
  {^(project-id: )[0-9a-f]{40}$}
      {\1HASH}
  {^(server-id:  )[0-9a-f]{40}$}
      {\1HASH}
  {^(admin-user: uvtester \(password is ").*("\))$}
      {\1PASSWORD\2}
  {^(repository:   ).*?/uvtest_\d+_\d+/(uvrepo.fossil)$}
      {\1/TMP/uvtest_SEC_SEQ/\2}
  {^(local-root:   ).*?/uvtest_\d+_\d+/$}
      {\1/TMP/uvtest_SEC_SEQ/}
  {^(project-code: )[0-9a-f]{40}$}
      {\1HASH}
}

dict set tests "utf" {
  {^(fossil test-looks-like-utf) (?:[A-Z]:)?/.*?/([^/\\]*?)\}?$}
      {\1 /TMP/test/\2}
  {^(File ")(?:[A-Z]:)?/.*?/(utf-check-\d+-\d+-\d+-\d+.jnk" has \d+ bytes\.)$}
      {\1/TMP/\2}
}

dict set tests "wiki" {
  {^(fossil (?:attachment|wiki) .*--technote )[0-9a-f]{21}$}
      {\1HASH}
  {^(fossil (?:attachment|wiki) .* (?:a13|f15|fa) --technote )[0-9a-f]+$}
      {\1ID}
  {^[0-9a-f]{40}( YYYY-mm-dd HH:MM:SS)}
      {HASH\1}
  {(\] Add attachment \[/artifact/)[0-9a-f]{16}(|)}
      {\1HASH\2}
  { (to tech note \[/technote/)[0-9a-f]{16}\|[0-9a-f]{10}(\] \(user:)}
      {\1HASH1|HASH2\2}
  {^(ambiguous tech note id: )[0-9a-f]+$}
      {\1ID}
  {^(Attached fa to tech note )[0-9a-f]{21}(?:[0-9a-f]{19})?\.$}
      {\1HASH.}
  {^(Date:) [A-Z][a-z]{2}, \d\d? [A-Z][a-z]{2} \d{4} \d\d:\d\d:\d\d [-+]\d{4}$}
      {\1 Day, dd Mon YYYY HH:MM:SS TZ}
  {(Content-Security-Policy.*'nonce-)[0-9a-f]{48}(';)}
      {\1NONCE\2}
  {^(<link rel="stylesheet" href="/style.css\?id=)[0-9a-f]+(" type="text/css">)$}
      {\1ID\2}
  {^(added by )[^ ]*( on)$}
      {\1USER\2}
  {^(<script nonce=['\"])[0-9a-f]{48}(['\"]>/\* [a-z]+\.c:)\d+}
      {\1NONCE\2LINENO}
  {^(<script nonce=['\"])[0-9a-f]{48}(['\"]>)$}
      {\1NONCE\2}
  {^(projectCode: ")[0-9a-f]{40}(",)$}
      {\1HASH\2}
  {^\d+\.\d+(s by)$}
      {N.SUB\1}
  {^(window\.fossil.version = ")\d+\.\d+ \[[0-9a-f]{10}\] (YYYY-mm-dd HH:MM:SS(?: UTC";)?)$}
      {\1N.M [HASH] \2}
  {^(Fossil) \d+\.\d+ \[[0-9a-f]{10}\]( YYYY-mm-dd HH:MM:SS)$}
      {\1 N.M [HASH]\2}
  {^(type:       Wiki-edit by ).+?( on YYYY-mm-dd HH:MM:SS)$$}
      {\1USER\2}
  {^(size:       )\d+( bytes)$}
      {\1N\2}
  {^U [^ ]+$}
      {U USER}
  {^Z [0-9a-f]{32}$}
      {Z CHECKSUM}
}

#
# Some pattersn are used in multiple groups
#

set testnames {"th1" "th1-docs" "th1-hooks"}
set pat {^((?:ERROR \(1\): )?/[*]{5} Subprocess) \d+ (exit)}
set sub {\1 PID \2}
foreach testname $testnames {
  dict lappend tests $testname $pat $sub
}

set testnames {"th1-docs" "th1-hooks"}
set pat {(?:[A-Z]:)?/.*?/(test-http-(?:in|out))-\d+-\d+-\d+(\.txt)}
set sub {/TMP/\1-PID-SEQ-SEC\2}
foreach testname $testnames {
  dict lappend tests $testname $pat $sub
}

set testnames {"json" "th1" "wiki"}
set pat {^(Content-Length:) \d+$}
set sub {\1 LENGTH}
foreach testname $testnames {
  dict lappend tests $testname $pat $sub
}

set testnames {"th1" "wiki"}
set pat {^\d+\.\d+(s by)$}
set sub {N.SUB\1}
foreach testname $testnames {
  dict lappend tests $testname $pat $sub
}

#
# Main
#

if { $fname eq "-" } {
  set fd stdin
} else {
  set fd [open $fname r]
}

# Platforms we detect
set UNKOWN_PLATFORM 0
set UNIX 1
set WINDOWS 2
set CYGWIN 3

# One specific wiki test creates repetitive output of varying length
set wiki_f13_cmd1 "fossil wiki create {timestamp of 2399999} f13 --technote 2399999"
set wiki_f13_cmd2 "fossil wiki list --technote --show-technote-ids"
set wiki_f13_cmd3 "fossil wiki export a13 --technote ID"
set collecting_f3 0
set collecting_f3_verbose 0

# Collected lines for summaries in --extra mode
set amend_ed_lines [list]
set amend_ed_failed 0
set symlinks_lines [list]
set symlinks_failed 0
set test_simplify_name_lines [list]
set test_simplify_name_failed 0

# State information s we progress
set check_json_empty_line 0
set lineno 0
set platform $UNKOWN_PLATFORM
set prev_line ""
set testname ""

while { [gets $fd line] >= 0 } {   
  incr lineno

  if { $lineno == 1 } {
    if { [string index $line 0] in {"\UFFEF" "\UFEFF"} } {
      set line [string range $line 1 end]
    }
  }

  # Remove RESULT status while matching (inserted again in output).
  # If collecting lines of output, include $result_prefix as needed.
  regexp {^(RESULT \([01]\): )?(.*)} $line match result_prefix line

  if { [regsub {^\*{5} ([^ ]+) \*{6}$} $line {\1} new_testname] } {
    # Pick up test name for special handling below
    set testname "$new_testname"
  } elseif { [regexp {^\*{5} End of } $line] } {
    # Test done.  Handle --extra before resetting.
    if { $EXTRA } {
      if { $testname eq "symlinks" } {
        if { $symlinks_failed } {
          foreach l $symlinks_lines {
            puts "$l"
          }
        } else {
          puts "All symlinks tests OK (not run on Windows)"
        }
      }
      regsub {(: )\d+( errors so far)} $line {\1N\2} line
    }
    set testname ""
  } elseif { $testname ne "" } {
    if { $platform == $UNKOWN_PLATFORM } {
      if { [regexp {^[A-Z]:/.*?/fossil\.exe } $line] } {
        set platform $WINDOWS
      } elseif { [regexp {^/.*?/fossil\.exe } $line] } {
        # No drive, but still .exe - must be CYGWIN
        set platform $CYGWIN
      } elseif { [regexp {^/.*?/fossil } $line] } {
        set platform $UNIX
      }
    }

    # Do common and per testname rewrites
    set line [common_rewrites $line $testname]
    if { [dict exists $tests $testname] } {
      foreach {pat sub} [dict get $tests $testname] {
        regsub $pat $line $sub line
      }
    }

    # On Windows, HTTP headers may get printed with an extra newline
    if { $testname eq "json" } {
      if { $check_json_empty_line == 1 } {
        if { "$result_prefix$line" eq "" } {
          set check_json_empty_line 2
          continue
        }
        set check_json_empty_line 0
      } elseif { [regexp {^(?:$|GET |POST |[A-Z][A-Za-z]*(?:-[A-Z][A-Za-z]*)*: )} $line] } {
        set check_json_empty_line 1
      } else {
        if { $check_json_empty_line == 2 } {
          # The empty line we skipped was meant to be followed by a new
          # HTTP header or empty line, but it was not.
          puts ""
        }
        set check_json_empty_line 0
      }
    }

    # Summarise repetitive output of varying length for f13 in wiki test
    if { $testname eq "wiki" } {
      if { $collecting_f3 == 2 } {
        if { $collecting_f3_verbose == 1 && [regexp {^HASH } $line] } {
          incr collecting_f3_verbose
        } elseif { $line eq $wiki_f13_cmd3 } {
          incr collecting_f3
          puts "\[...\]"
        } else {
          continue
        }
      } elseif { $collecting_f3 == 1 } {
        if { $line eq $wiki_f13_cmd2 } {
          incr collecting_f3
        } elseif { $collecting_f3_verbose == 0 } {
          incr collecting_f3_verbose
        }
      } elseif { $line eq $wiki_f13_cmd1 } {
        incr collecting_f3
      }
    }

    if { $EXTRA } {
      if { $line eq "ERROR (0): " && $platform == $WINDOWS } {
        if { [string match "fossil http --in *" $prev_line] } {
          continue
        }
      }
      if { $testname eq "amend" } {
        # The amend-comment-5.N tests are not run on Windows
        if { $line eq "fossil amend {} -close" } {
          if { $amend_ed_failed } {
            foreach l $amend_ed_lines {
              puts "$l"
            }
          } else {
            puts "All amend tests based on ed -s OK (not run on Windows)"
          }
          set amend_ed_lines [list]
        } elseif { [llength $amend_ed_lines] } {
          if { [regexp {^test amend-comment-5\.\d+ (.*)} $line match status] } {
            lappend amend_ed_lines "$result_prefix$line"
            if { $status ne "OK" } {
              incr amend_ed_failed
            }
            continue
          } elseif { [string range $line 0 4] eq "test " } {
            # Handle change in tests by simply emitting what we got
            foreach l $amend_ed_lines {
              puts "$l"
            }
            set amend_ed_lines [list]
          } else {
            lappend amend_ed_lines "$result_prefix$line"
            continue
          }
        } elseif { $line eq "fossil settings editor {ed -s}" } {
          lappend amend_ed_lines "$result_prefix$line"
          continue
        }
      } elseif { $testname eq "cmdline" } {
        if { [regexp {^(fossil test-echo) (.*)} $line match test args] } {
          if { ($platform == $UNIX && $args in {"*" "*.*"})
               || ($platform == $WINDOWS && $args eq "--args /TMP/fossil-cmd-line-101.txt")
               || ($platform == $CYGWIN && $args in {"*" "*.*"}) } {
            set line "$test ARG_FOR_PLATFORM"
          }
        }
      } elseif { $testname eq "commit-warning" } {
        if { [regexp {^(micro-smile|pale facepalm) .*} $line match desc] } {
          set line "$desc PLATFORM_SPECIFIC_BYTES"
        }
      } elseif { $testname eq "file1" } {
        # test-simplify-name with question marks is specific to Windows
        # They all immediately preceed "fossil test-relative-name --chdir . ."
        if { $line eq "fossil test-relative-name --chdir . ." } {
          if { $test_simplify_name_failed } {
            foreach l $test_simplify_name_lines {
              puts "$l"
            }
          } else {
            puts "ALL Windows specific test-relative-name tests OK (if on Windows)"
          }
          set test_simplify_name_lines [list]
        } elseif { [regexp {^fossil test-simplify-name .*([/\\])\?\1} $line] } {
          lappend test_simplify_name_lines $line
          continue
        } elseif { [llength $test_simplify_name_lines] } {
          if { [regexp {^test simplify-name-\d+ (.*)} $line match status] } {
            if { $status ne "OK" } {
              incr test_simplify_name_failed
            }
          }
          lappend test_simplify_name_lines "$result_prefix$line"
          continue
        }
      } elseif { $testname eq "settings-repo" } {
        if { [regexp {^fossil test-th-eval (?:--open-config )?\{setting case-sensitive\}$} $prev_line] } {
          if { ($platform == $UNIX && $line eq "on")
               || ($platform == $WINDOWS && $line eq "off")
               || ($platform == $CYGWIN && $line eq "off")
               } {
            set line "EXPECTED_FOR_PLATFORM"
          }
        }
      } elseif { $testname eq "symlinks" } {
        # Collect all lines and post-process at the end
        lappend symlinks_lines "$result_prefix$line"
        if { [regexp {^test symlinks-[^ ]* (.*)} $line match status] } {
          if { $status ne "OK" } {
            #TODO: incr symlinks_failed
          }
        }
        continue
      } elseif { $testname in {"th1" "th1-docs" "th1-hooks"} } {
        # Special case that spans a couple of tests
        # "Subprocess PID exit(0)" is sent on stderr on Unix. On Windows, there is no output
        if { [regexp {^(ERROR \(1\): )?/\*{5} Subprocess PID exit\(0\) \*{5}/$} $line match prefix] } {
          if { $prefix eq "" } {
            continue
          } elseif { $prefix eq "ERROR (1): " } {
            set line "RESULT (0): "
          }
        } elseif { $testname eq "th1" } {
          if { [regexp {^fossil test-th-eval --vfs ([^ ]+) \{globalState vfs\}$} $line match vfs] } {
            if { ($platform == $UNIX && $vfs == "unix-dotfile")
                 || ($platform == $WINDOWS && $vfs == "win32-longpath")
                 || ($platform == $CYGWIN && $vfs == "win32-longpath") } {
              regsub $vfs $line {EXEPECTED_VFS} line
            }
          } elseif { $prev_line eq "fossil test-th-eval --vfs EXEPECTED_VFS {globalState vfs}" } {
            # Replace $vfs from previous line
            regsub "^$vfs\$" $line {EXEPECTED_VFS} line
          } elseif { $prev_line eq "fossil test-th-eval {set tcl_platform(platform)}" } {
            if { $platform == $UNIX } {
              regsub {^unix$} $line {EXPECTED_PLATFORM} line
            } elseif { $platform == $WINDOWS } {
              regsub {^windows$} $line {EXPECTED_PLATFORM} line
            } elseif { $platform == $CYGWIN } {
              regsub {^unix$} $line {EXPECTED_PLATFORM} line
            }
          } elseif { [string match "fossil test-th-eval --th-trace *" $prev_line] } {
            if { ($result_prefix eq "RESULT (1): " && $line eq "")
                 || ($result_prefix eq "" && $line eq "ERROR (0): ") } {
              set result_prefix ""
              set line "RESULT (0): / ERROR (1): "
            }
          }
        } elseif { $testname eq "th1-docs" } {
          # In th1-docs, the fossil check-out is exposed in various states.
          regsub {(^project-code:) CE59BB9F186226D80E49D1FA2DB29F935CCA0333} $line {\1 HASH} line
          if { [regexp {^merged-from:  HASH YYYY-mm-dd HH:MM:SS UTC$} $line] } {
            continue
          }
        }
      }
    }
  } elseif { $EXTRA } {
    # Fix up summaries to be generic and easy to diff(1)
    if { [regsub {(^\*{5} (Final|Ignored) results: )\d+} $line {\1N} line] } {
      regsub {\d+} $line {N} line
    } elseif { [regexp {^(\*{5} (?:Considered failure|Ignored failure|Skipped test))s: (.*)} $line match desc vals] } {
      if { $vals ne ""} {
        foreach val [split $vals " "] {
          puts "$desc: $val"
        }
        continue
      }
    }
  }

  # Not exactly correct if we continue'd, but OK for the purpose
  set prev_line "$result_prefix$line"
  puts "$prev_line"
}
Added test/set-manifest.test.































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test manifest setting
#

proc file_contains {fname match} {
  set fp [open $fname r]
  set contents [read $fp]
  close $fp
  set lines [split $contents "\n"]
  foreach line $lines {
    if {[regexp $match $line]} {
      return 1
    }
  }
  return 0
}

# We need SHA1 to effectively test the manifest files produced by
# fossil. It looks like the one from tcllib is exactly what we need.
# On ActiveTcl, add it with teacup. On other platforms, YMMV.
# teacup install sha1
if {[catch {package require sha1}] != 0} {
  puts "The \"sha1\" package is not available."
  test_cleanup_then_return
}

# We need a respository, so let it have one.
test_setup

#### Verify classic behavior of the manifest setting

# Setting is off by default, and there are no extra files.
fossil settings manifest
test "set-manifest-1" {[regexp {^manifest *$} $RESULT]}
set filelist [lsort [glob -nocomplain manifest*]]
test "set-manifest-1-n" {[llength $filelist] == 0}

# Classic behavior: TRUE value creates manifest and manifest.uuid
set truths [list true on 1]
foreach v $truths {
  fossil settings manifest $v
  test "set-manifest-2-$v" {$RESULT eq ""}
  fossil settings manifest
  test "set-manifest-2-$v-a" {[regexp "^manifest\\s+\\(local\\)\\s+$v\\s*$" $RESULT]}
  set filelist [lsort [glob manifest*]]
  test "set-manifest-2-$v-n" {[llength $filelist] == 2}
  foreach f $filelist {
    test "set-manifest-2-$v-f-$f" {[file isfile $f]}
  }
}

# ... and manifest.uuid is the checkout's hash
fossil info
regexp {(?m)^checkout:\s+([0-9a-f]{40,64})\s.*$} $RESULT ckoutline ckid
set uuid [string trim [read_file "manifest.uuid"]]
test "set-manifest-2-uuid" {[same_uuid $ckid $uuid]}


# ... which is also the SHA1 of the file "manifest" before it was
# sterilized by appending an extra line when writing the file. The
# extra text begins with # and is a full line, so we'll just strip
# it with a brute-force substitution. This probably has the right
# effect even if the checkin was PGP-signed, but we don't have that
# setting turned on for this manifest in any case.
#regsub {(?m)^#.*\n} [read_file "manifest"] "" manifest
#set muuid [::sha1::sha1 $manifest]
#test "set-manifest-2-manifest" {[same_uuid $muuid $uuid]}


# Classic behavior: FALSE value removes manifest and manifest.uuid
set falses [list false off 0]
foreach v $falses {
  fossil settings manifest $v
  test "set-manifest-3-$v" {$RESULT eq ""}
  fossil settings manifest
  test "set-manifest-3-$v-a" {[regexp "^manifest\\s+\\(local\\)\\s+$v\\s*$" $RESULT]}
  set filelist [lsort [glob -nocomplain manifest*]]
  test "set-manifest-3-$v-n" {[llength $filelist] == 0}
}


# Classic behavior: unset removes manifest and manifest.uuid
fossil unset manifest
test "set-manifest-4" {$RESULT eq ""}
fossil settings manifest
test "set-manifest-4-a" {[regexp {^manifest *$} $RESULT]}
set filelist [lsort [glob -nocomplain manifest*]]
test "set-manifest-4-n" {[llength $filelist] == 0}


##### Tags Manifest feature extends the manifest setting

# Manifest Tags: use letters r, u, and t to select each of manifest,
# manifest.uuid, and manifest.tags files.
set truths [list r u t ru ut rt rut]
foreach v $truths {
  fossil settings manifest $v
  test "set-manifest-5-$v" {$RESULT eq ""}
  fossil settings manifest
  test "set-manifest-5-$v-a" {[regexp "^manifest\\s+\\(local\\)\\s+$v\\s*$" $RESULT]}
  set filelist [lsort [glob manifest*]]
  test "set-manifest-5-$v-n" {[llength $filelist] == [string length $v]}
  foreach f $filelist {
    test "set-manifest-5-$v-f-$f" {[file isfile $f]}
  }
}

# Quick check for tags applied in trunk
test_file_contents "set-manifest-6" "manifest.tags" "branch trunk\ntag trunk\n"


##### Test manifest.tags file content updates after commits

# Explicitly set manifest.tags mode
fossil set manifest t
test "set-manifest-7-1" {[file isfile manifest.tags]}

# Add a tag and make sure it appears in manifest.tags
fossil tag add manifest-7-tag-1 tip
test "set-manifest-7-2" {[file_contains "manifest.tags" "^tag manifest-7-tag-1$"]}

# Add a file and make sure tag has disappeared from manifest.tags
write_file file1 "file1 contents"
fossil add file1
fossil commit -m "Added file1."
test "set-manifest-7-3" {![file_contains "manifest.tags" "^tag manifest-7-tag-1$"]}

# Add new tag and check that it is in manifest.tags
fossil tag add manifest-7-tag-2 tip
test "set-manifest-7-4" {[file_contains "manifest.tags" "^tag manifest-7-tag-2$"]}


##### Tags manifest branch= updates

# Add file, create new branch on commit and check that
# manifest.tags has been updated appropriately
write_file file3 "file3 contents"
fossil add file3
fossil commit -m "Added file3." --branch manifest-8-branch
test "set-manifest-8" {[file_contains "manifest.tags" "^branch manifest-8-branch$"]}


test_cleanup
Added test/settings-repo.test.










































































































































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# The "settings" and "unset" commands that may modify the repository.
#

set path [file dirname [info script]]

require_no_open_checkout

test_setup

###############################################################################
#
# Complete syntax as tested:
#
#     fossil settings ?PROPERTY? ?VALUE? ?OPTIONS?
#     fossil unset PROPERTY ?OPTIONS?
#
# Where the only supported options are "--global" and "--exact".
#
###############################################################################

set all_settings [get_all_settings]

foreach name $all_settings {
  #
  # HACK: Make 100% sure that there are no non-default setting values
  #       present anywhere.
  #
  if {$name eq "manifest"} {
    fossil unset $name --exact --global -expectError
  } else {
    fossil unset $name --exact --global
  }
  fossil unset $name --exact

  #
  # NOTE: Query for the hard-coded default value of this setting and
  #       save it.
  #
  fossil test-th-eval "setting $name"
  set defaults($name) [normalize_result]
}

###############################################################################

fossil settings bad-setting some_value -expectError

test settings-set-bad-local {
  [normalize_result] eq "no such setting: bad-setting"
}

fossil settings bad-setting some_value --global -expectError

test settings-set-bad-global {
  [normalize_result] eq "no such setting: bad-setting"
}

###############################################################################

fossil unset bad-setting -expectError

test settings-unset-bad-local {
  [normalize_result] eq "no such setting: bad-setting"
}

fossil unset bad-setting --global -expectError

test settings-unset-bad-global {
  [normalize_result] eq "no such setting: bad-setting"
}

###############################################################################

fossil settings ssl some_value -expectError

test settings-set-ambiguous-local {
  [normalize_result] eq
  "ambiguous setting \"ssl\" - might be: ssl-ca-location ssl-identity"
}

fossil settings ssl some_value --global -expectError

test settings-set-ambiguous-global {
  [normalize_result] eq
  "ambiguous setting \"ssl\" - might be: ssl-ca-location ssl-identity"
}

###############################################################################

fossil unset ssl -expectError

test settings-unset-ambiguous-local {
  [normalize_result] eq
  "ambiguous setting \"ssl\" - might be: ssl-ca-location ssl-identity"
}

fossil unset ssl --global -expectError

test settings-unset-ambiguous-global {
  [normalize_result] eq
  "ambiguous setting \"ssl\" - might be: ssl-ca-location ssl-identity"
}

###############################################################################

set pattern(1) {^%name%$}
set pattern(3) {^%name%[ ]+\(global\)[ ]+%value%+$}
set pattern(4) {^%name%[ ]+\(local\)[ ]+%value%+$}

foreach name $all_settings {
  if {$name ne "manifest"} {
    set value #global_for_$name
    fossil settings $name $value --exact --global
    set data [normalize_result]

    test settings-set-$name-global {
      $data eq ""
    }

    fossil settings $name --exact --global
    set data [normalize_result]

    test settings-set-check1-$name-global {
      [regexp -- [string map \
          [list %name% $name %value% $value] $pattern(3)] $data]
    }

    fossil test-th-eval --open-config "setting $name"
    set data [normalize_result]

    test settings-set-check2-$name-global {
      $data eq $value
    }

    fossil unset $name --exact --global
    set data [normalize_result]

    test settings-unset-$name-global {
      $data eq ""
    }

    fossil settings $name --exact --global
    set data [normalize_result]

    test settings-unset-check1-$name-global {
      [regexp -- [string map \
          [list %name% $name %value% $value] $pattern(1)] $data]
    }

    fossil test-th-eval --open-config "setting $name"
    set data [normalize_result]

    test settings-unset-check2-$name-global {
      $data eq $defaults($name)
    }
  }

  set value #local_for_$name
  fossil settings $name $value --exact
  set data [normalize_result]

  test settings-set-$name-local {
    $data eq ""
  }

  fossil settings $name --exact
  set data [normalize_result]

  test settings-set-check1-$name-local {
    [regexp -- [string map \
        [list %name% $name %value% $value] $pattern(4)] $data]
  }

  fossil test-th-eval --open-config "setting $name"
  set data [normalize_result]

  test settings-set-check2-$name-local {
    $data eq $value
  }

  fossil unset $name --exact
  set data [normalize_result]

  test settings-unset-$name-local {
    $data eq ""
  }

  fossil settings $name --exact
  set data [normalize_result]

  test settings-unset-check1-$name-local {
    [regexp -- [string map \
        [list %name% $name %value% $value] $pattern(1)] $data]
  }

  fossil test-th-eval --open-config "setting $name"
  set data [normalize_result]

  test settings-unset-check2-$name-local {
    $data eq $defaults($name)
  }
}

###############################################################################

set pattern(5) \
  {^%name%[ ]+\n  \(overridden by contents of file \.fossil-settings/%name%\)$}

set versionable_settings [get_versionable_settings]
file mkdir .fossil-settings

foreach name $versionable_settings {
  fossil settings $name --exact
  set data [normalize_result]

  test settings-before-versionable-$name {
    [regexp -- [string map [list %name% $name] $pattern(1)] $data]
  }

  set value #versionable_for_$name
  set fileName [file join .fossil-settings $name]
  write_file $fileName $value

  fossil settings $name --exact
  set data [normalize_result]

  test settings-set-check1-versionable-$name {
    [regexp -- [string map [list %name% $name] $pattern(5)] $data]
  }

  fossil test-th-eval --open-config "setting $name"
  set data [normalize_result]

  test settings-set-check2-versionable-$name {
    $data eq ""
  }

  file delete $fileName

  fossil settings $name --exact
  set data [normalize_result]

  test settings-after-versionable-$name {
    [regexp -- [string map [list %name% $name] $pattern(1)] $data]
  }
}

###############################################################################

test_cleanup
Added test/settings.test.










































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# The "settings" and "unset" commands.
#

set path [file dirname [info script]]; test_setup

###############################################################################
#
# Complete syntax as tested:
#
#     fossil settings ?PROPERTY? ?VALUE? ?OPTIONS?
#     fossil unset PROPERTY ?OPTIONS?
#
# Where the only supported options are "--global" and "--exact".
#
###############################################################################
#
# NOTE: The [get_all_settings] procedure from test/tester.tcl returns the list
#       of settings to test and needs to be manually updated when new settings
#       are added.
#
###############################################################################
#
# NOTE: The [extract_setting_names] procedure extracts the list of setting
#       names from the line-ending normalized output of the "fossil settings"
#       command.  It assumes that a setting name must begin with a lowercase
#       letter.  It also assumes that any output lines that start with a
#       lowercase letter contain a setting name starting at that same point.
#
proc extract_setting_names { data } {
  set names [list]

  foreach {dummy name} [regexp \
      -all -line -inline -- {^([a-z][a-z0-9\-]*) ?.*$} $data] {
    lappend names $name
  }

  return $names
}

###############################################################################

set all_settings [get_all_settings]

fossil settings
set local_settings [extract_setting_names [normalize_result_no_trim]]

fossil settings --global
set global_settings [extract_setting_names [normalize_result_no_trim]]

foreach name $all_settings {
  test settings-have-local-$name {
    [lsearch -exact $local_settings $name] != -1
  }

  test settings-have-global-$name {
    [lsearch -exact $global_settings $name] != -1
  }
}

foreach name $local_settings {
  test settings-valid-local-$name {
    [lsearch -exact $all_settings $name] != -1
  }
}

foreach name $global_settings {
  test settings-valid-global-$name {
    [lsearch -exact $all_settings $name] != -1
  }
}

###############################################################################

set pattern(1) {^%name%$}
set pattern(2) {^%name%[ ]+\((?:local|global)\)[ ]+[^ ]+$}

foreach name $all_settings {
  fossil settings $name --exact
  set data [normalize_result]

  test settings-query-local-$name {
    [regexp -- [string map [list %name% $name] $pattern(1)] $data] ||
    [regexp -- [string map [list %name% $name] $pattern(2)] $data]
  }

  if {$name eq "manifest"} {
    fossil settings $name --exact --global -expectError
  } else {
    fossil settings $name --exact --global
  }
  set data [normalize_result]

  if {$name eq "manifest"} {
    test settings-query-global-$name {
      $data eq "cannot set 'manifest' globally"
    }
  } else {
    test settings-query-global-$name {
      [regexp -- [string map [list %name% $name] $pattern(1)] $data] ||
      [regexp -- [string map [list %name% $name] $pattern(2)] $data]
    }
  }
}

###############################################################################

fossil settings bad-setting -expectError

test settings-query-bad-local {
  [normalize_result] eq "no such setting: bad-setting"
}

fossil settings bad-setting --global -expectError

test settings-query-bad-global {
  [normalize_result] eq "no such setting: bad-setting"
}

###############################################################################

test_cleanup
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#
# Copyright (c) 2013 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
#
# Tests for 'fossil stash'
#
#

proc knownBug {t tests} {
  return [expr {$t in $tests ? "knownBug" : ""}]
}

# Test 'fossil stash' against expected results from 'fossil changes' and
# 'fossil addremove -n', as well as by verifying the existence of files
# on the file system. Unlike the similar function found in
# revert.test, 'fossil undo' is not called after each test because
# many stash operations aren't undoable, and because further testing
# of the stash content is more likely to be useful.
#
# The extra list "-knownbugs" is a list of areas that should be
# marked as "knownBug" to the inner call to test. Known areas are:
#  -code       The exit status of fossil stash
#  -result     The result string didn't match
#  -changes    The changed file set didn't match
#  -addremove  The addremove result set didn't match
#  -exists     One or more listed files don't exist
#  -notexists  One or more listed files do exist
#
# Also, if the exit status of fossil stash does not match
# expectations, the rest of the areas are not tested.
proc test_result_state {testid cmdArgs expectedOutput args} {
  global RESULT
  set passed 1

  set args [dict merge {
    -changes {} -addremove {} -exists {} -notexists {} -knownbugs {}
  } $args]

  set knownbugs [dict get $args "-knownbugs"]
  set result $::RESULT
  set code $::CODE
  if {[lindex $cmdArgs end] eq "-expectError"} {
    test $testid-CODE {$code}  [knownBug "-code" $knownbugs]
    if {!$code} {
      return
    }
  } else {
    test $testid-CODE {!$code}  [knownBug "-code" $knownbugs]
    if {$code} {
      return
    }
  }
  test_status_list $testid $result $expectedOutput [knownBug "-result" $knownbugs]

  set statusListTests [list -changes changes -addremove {addremove -n}]
  foreach {key fossilArgs} $statusListTests {
    set expected [dict get $args $key]
    set result [fossil {*}$fossilArgs]
    test_status_list $testid$key $result $expected [knownBug $key $knownbugs]
  }

  set fileExistsTests [list -exists 1 does -notexists 0 should]
  foreach {key expected verb} $fileExistsTests {
    foreach path [dict get $args $key] {
      if {[file exists $path] != $expected} {
        set passed 0
        protOut "  Failure: File $verb not exist: $path"
      }
    }
    test $testid$key $passed [knownBug $key $knownbugs]
  }

  #fossil undo
}

proc stash-test {testid stashArgs expectedStashOutput args} {
  fossil stash {*}$stashArgs
  return [test_result_state stash-$testid "stash $stashArgs" $expectedStashOutput {*}$args]
}

require_no_open_checkout
test_setup

# Prepare first commit
#
write_file f1 "f1"
write_file f2 "f2"
write_file f3 "f3"
fossil add f1 f2 f3
fossil commit -m "c1" --tag c1

########
# fossil stash
# fossil stash save ?-m|--comment COMMENT? ?FILES...?

# Make simple changes to stash
# Add f0, remove f1, edit f2, rename f3 to f3n
write_file f0 "f0"
fossil add f0
file delete f1
fossil rm f1
write_file f2 "f2.1"
file rename -force f3 f3n
fossil mv f3 f3n

# Stash these changes and confirm
stash-test 1 {save -m "stash 1"} {
  UNMANAGE f0
  REVERT   f1
  REVERT   f2
  REVERT   f3
  DELETE   f3n
} -addremove {
  ADDED f0
} -exists {f0 f1 f2 f3} -notexists {f3n}

########
# fossil stash list|ls  ?-v|--verbose? ?-W|--width <num>?

# Confirm there is a stash saved
fossil stash list
#protOut "{[normalize_result]}"
#{1: [21bc64cff8c702] on 2016-02-10 19:48:44
#       stash 1}
test stash-1-list-1 {[regexp {^1: \[[0-9a-z]+\] on } [first_data_line]]}
test stash-1-list-2 {[regexp {^\s+stash 1\s*$} [second_data_line]]}

set diff_stash_1 {DELETE f1
Index: f1
==================================================================
--- f1
+++ /dev/null
@@ -1,1 +0,0 @@
-f1

CHANGED f2
--- f2
+++ f2
@@ -1,1 +1,1 @@
-f2
+f2.1

CHANGED f3n
--- f3n
+++ f3n

ADDED f0
Index: f0
==================================================================
--- /dev/null
+++ f0
@@ -0,0 +1,1 @@
+f0}

########
# fossil stash show|cat ?STASHID? ?DIFF-OPTIONS?
# fossil stash [g]diff ?STASHID? ?DIFF-OPTIONS?

#fossil stash show
#test stash-1-show {[normalize_result] eq $diff_stash_1}
#fossil stash diff
#test stash-1-diff {[normalize_result] eq $diff_stash_1} knownBug

########
# fossil stash pop

stash-test 2 pop {
  DELETE f1
  UPDATE f2
  UPDATE f3n
  ADDED  f0
} -changes {
  ADDED      f0
  MISSING    f1
  EDITED     f2
  RENAMED    f3  ->  f3n
} -addremove {
  DELETED  f1
} -exists {f0 f2 f3n} -notexists {f1 f3}

# Confirm there is no longer a stash saved
fossil stash list
test stash-2-list {[first_data_line] eq "empty stash"}


# Test stashed mv without touching the file system
# Issue reported by email to fossil-users
#   from Warren Young, dated Tue, 9 Feb 2016 01:22:54 -0700
#   with checkin [b8c7af5bd9] plus a local patch on CentOS 5
#   64 bit intel, 8-byte pointer, 4-byte integer
# Stashed renamed file said:
# fossil: ./src/delta.c:231: checksum: Assertion '...' failed.
# Should be triggered by this stash-WY-1 test.
fossil checkout --force c1
fossil clean
fossil mv --soft f1 f1new
#stash-test WY-1 {-expectError save -m "Reported 2016-02-09"} {
#  REVERT   f1
#  DELETE   f1new
#} -changes {
#} -addremove {
#} -exists {f1 f2 f3} -notexists {f1new} -knownbugs {-code -result}
# TODO: add tests that verify the saved stash is sensible. Possibly
# by applying it and checking results. But until the SQLITE_CONSTRAINT
# error is fixed, there is nothing stashed to test.



# Test stashing the combination of a renamed file and an added file that
# uses the renamed file's original filename. I expect to see the same
# behavior as fossil revert: calmly back out both the rename and the
# add, and presumably stash the content of the added file before it
# is replaced by the revert.
#
test_setup
write_file f1 "f1"
fossil add f1
fossil commit -m "add f1"

write_file f1n "f1n"
fossil mv f1 f1n
write_file f1 "f1b"
fossil add f1

stash-test 2-1 {save -m "f1b"} {
  REVERT   f1
  DELETE   f1n
} -exists {f1} -notexists {f1n} -knownbugs {-code -result}
# TODO: add tests that verify the saved stash is sensible. Possibly
# by applying it and checking results. But until the MISSING file
# error is fixed, there is nothing stashed to test.


# Test stashing a newly added (but never committed) file. As with
# fossil revert, fossil stash save unmanages the new file, but
# leaves the copy present on disk. This is undocumented, but
# probably sensible.
test_setup
write_file f1 "f1"
write_file f2 "f2"
fossil add f1 f2
fossil commit -m "baseline"

write_file f3 "f3"
fossil add f3
stash-test 3-1 {save -m f3} {
  UNMANAGE f3
} -addremove {
  ADDED f3
} -exists {f1 f2 f3} -notexists {}
#fossil status
fossil stash show
test stash-3-1-show {[normalize_result] eq {ADDED f3
Index: f3
==================================================================
--- /dev/null
+++ f3
@@ -0,0 +1,1 @@
+f3}}
stash-test 3-1-pop {pop} {
  ADDED f3
} -changes {
  ADDED f3
} -addremove {
} -exists {f1 f2 f3} -notexists {}
fossil status


# Test stashing a rename of one file with at least one file
# unchanged. This should stash (and revert) just the rename
# operation. Instead it also stores and touches the unchanged file.
test_setup
write_file f1 "f1"
write_file f2 "f2"
fossil add f1 f2
fossil commit -m "baseline"

fossil mv --hard f2 f2n
test_result_state stash-3-2-mv "mv --hard f2 f2n" [concat {
  RENAME f2 f2n
  MOVED_FILE} [file normalize f2] {
}] -changes {
  RENAMED f2  ->  f2n
} -addremove {
} -exists {f1 f2n} -notexists {f2}

fossil stash save -m f2n
#stash-test 3-2 {save -m f2n} {
#  REVERT f2
#  DELETE f2n
#} -exists {f1 f2} -notexists {f2n} -knownbugs {-result}
fossil stash show
#test stash-3-2-show-1 {![regexp {\sf1} $RESULT]} knownBug
test stash-3-2-show-2 {[regexp {\sf2n} $RESULT]}
stash-test 3-2-pop {pop} {
  UPDATE f1
  UPDATE f2n
} -changes {
  RENAMED    f2  ->  f2n
} -addremove {
} -exists {f1 f2n} -notexists {f2}



########
# fossil stash snapshot ?-m|--comment COMMENT? ?FILES...?

test_setup
write_file f1 "f1"
write_file f2 "f2"
write_file f3 "f3"
fossil add f1 f2 f3
fossil commit -m "c1" --tag c1

# Make simple changes and snapshot them
# Add f0, edit f2
write_file f0 "f0"
fossil add f0
write_file f2 "f2.1"

# Snapshot these changes and confirm
stash-test 4-1 {snapshot -m "snap 1"} {
} -changes {
  ADDED      f0
  EDITED     f2
} -addremove {
} -exists {f0 f1 f2 f3} -notexists {}
fossil stash diff
test stash-4-1-diff-CODE {!$::CODE}
fossil stash show
test stash-4-1-show-1 {[regexp {CHANGED f2} $RESULT]}
test stash-4-1-show-2 {[regexp {ADDED f0} $RESULT]}

# remove f1 and snapshot
file delete f1
fossil rm f1
stash-test 4-2 {snapshot -m "snap 2"} {
} -changes {
  ADDED      f0
  DELETED    f1
  EDITED     f2
} -addremove {
} -exists {f0 f2 f3} -notexists {f1}
fossil stash diff
test stash-4-2-diff-CODE {!$::CODE} knownBug
fossil stash show
test stash-4-2-show-1 {[regexp {DELETE f1} $RESULT]}
test stash-4-2-show-2 {[regexp {CHANGED f2} $RESULT]}
test stash-4-2-show-3 {[regexp {ADDED f0} $RESULT]}


# rename f3 to f3n and snapshot
file rename -force f3 f3n
fossil mv f3 f3n
stash-test 4-3 {snapshot -m "snap 3"} {
} -changes {
  ADDED      f0
  DELETED    f1
  EDITED     f2
  RENAMED    f3  ->  f3n
} -addremove {
} -exists {f0 f2 f3n} -notexists {f1 f3}
fossil stash diff
test stash-4-3-diff-CODE {!$::CODE} knownBug
fossil stash show
test stash-4-3-show-1 {[regexp {DELETE f1} $RESULT]}
test stash-4-3-show-2 {[regexp {CHANGED f2} $RESULT]}
test stash-4-3-show-2 {[regexp {CHANGED f3n} $RESULT]}
test stash-4-3-show-3 {[regexp {ADDED f0} $RESULT]}

# fossil stash apply ?STASHID?
# fossil stash goto ?STASHID?
# fossil stash rm|drop ?STASHID? ?-a|--all?

#fossil checkout --force c1
#fossil clean

###############################################################################

test_cleanup
Added test/subdir with spaces/filename with spaces.txt.


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This file has a name that contains spaces.  It is used to help verify
that fossil can handle filenames that contain spaces.
Added test/subdir-b/readme.txt.



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This file exists in order to create the "subdir-b" subdirectory.  There is
exists sibling directory "subdir" that is a prefix of this subdirectory.
This file exists for self-testing.
Added test/subdir/README.html.















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<h1>An Example HTML Readme</h1>

<p>
The test/subdir/ directory and its children exist purely for testing
in the self-hosting Fossil repository.  This particular file is used
to verify that a file name "README.html" is displayed correctly.
beneath the directory listing.
</p>

<center>
<table border=1>
<tr><td>This</td><td>is</td></tr>
<tr><td>a</td><td>&lt;table&gt;</td></tr>
</table>
</center>
Added test/subdir/one/readme.wiki.









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<title>Fossil Wiki Readme</title>

This is another test README file.  The point of this file is to show that
lower-case "readme" is recognized, and the Fossil-Wiki formatting is
displayed correctly.

  *   First bullet

  *   Second bullet
Added test/subdir/one/two/three/four/five/six/readme.txt.


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This file exists in order to provide Fossil with a test case of a file
that is deeply nested below many subdirectories.
Added test/symlinks.test.















































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Symbolic link tests.
#

set path [file dirname [info script]]

if {$is_windows} {
  puts "Symlinks are not supported on Windows."
  test_cleanup_then_return
}

require_no_open_checkout

###############################################################################

test_setup; set rootDir [file normalize [pwd]]

# Using tempHomePath, allow-symlinks will always be off at this point.
fossil set allow-symlinks on

fossil test-th-eval --open-config {repository}
set repository [normalize_result]

if {[string length $repository] == 0} {
  puts "Detection of the open repository file failed."
  test_cleanup_then_return
}

#######################################
# Use symbolic link to a directory... #
#######################################

file mkdir [file join $rootDir subdirA]
exec ln -s [file join $rootDir subdirA] symdirA

###############################################################################

write_file [file join $rootDir subdirA f1.txt] "f1"
write_file [file join $rootDir subdirA f2.txt] "f2"

test symlinks-dir-1 {[file exists [file join $rootDir subdirA f1.txt]] eq 1}
test symlinks-dir-2 {[file exists [file join $rootDir symdirA f1.txt]] eq 1}
test symlinks-dir-3 {[file exists [file join $rootDir subdirA f2.txt]] eq 1}
test symlinks-dir-4 {[file exists [file join $rootDir symdirA f2.txt]] eq 1}

fossil add [file join $rootDir symdirA f1.txt]
test symlinks-skip-dir-traversal {[normalize_result] eq \
"SKIP   symdirA/f1.txt"}

fossil commit -m "c1" -expectError

test symlinks-empty-commit {[normalize_result] eq \
"nothing has changed; use --allow-empty to override"}

###############################################################################

fossil ls
test symlinks-dir-5 {[normalize_result] eq ""}

###############################################################################

fossil extras
test symlinks-dir-6 {[normalize_result] eq \
"subdirA/f1.txt\nsubdirA/f2.txt\nsymdirA"}

###############################################################################

fossil close
file delete [file join $rootDir subdirA f1.txt]

test symlinks-dir-7 {[file exists [file join $rootDir subdirA f1.txt]] eq 0}
test symlinks-dir-8 {[file exists [file join $rootDir symdirA f1.txt]] eq 0}
test symlinks-dir-9 {[file exists [file join $rootDir subdirA f2.txt]] eq 1}
test symlinks-dir-10 {[file exists [file join $rootDir symdirA f2.txt]] eq 1}

###############################################################################

fossil open --force $repository
set code [catch {file readlink [file join $rootDir symdirA]} result]

test symlinks-dir-11 {$code == 0}
test symlinks-dir-12 {$result eq [file join $rootDir subdirA]}
test symlinks-dir-13 {[file exists [file join $rootDir subdirA f1.txt]] eq 0}
test symlinks-dir-14 {[file exists [file join $rootDir symdirA f1.txt]] eq 0}
test symlinks-dir-15 {[file exists [file join $rootDir subdirA f2.txt]] eq 1}
test symlinks-dir-16 {[file exists [file join $rootDir symdirA f2.txt]] eq 1}

###############################################################################
#
# TODO: Add tests for symbolic links as files here, including tests with the
#       "allow-symlinks" setting on and off.
#
###############################################################################

test_cleanup
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<title>Test Page</title>

The purpose of this page is to test Fossil's ability to deal with
embedded documentation pages that contain characters that should be
escaped in URLs.

Here is a link to the [./release-checklist.wiki | release checklist].
Changes to test/tester.tcl.
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#
# Copyright (c) 2006 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License version 2 as published by the Free Software Foundation.
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
# General Public License for more details.
# 
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA  02111-1307, USA.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# This is the main test script.  To run a regression test, do this:
#
#     tclsh ../test/tester.tcl ../bld/fossil
#
# Where ../test/tester.tcl is the name of this file and ../bld/fossil
# is the name of the executable to be tested.
#
# To run a subset of tests (i.e. only one or more of the test/*.test
# scripts), append the script base names as arguments:

set testdir [file normalize [file dir $argv0]]
#
#     tclsh ../test/tester.tcl ../bld/fossil <script-basename>...
#

# We use some things introduced in 8.6 such as lmap.  auto.def should
# have found us a suitable Tcl installation.
package require Tcl 8.6

set testfiledir [file normalize [file dirname [info script]]]
set testrundir [pwd]
set testdir [file normalize [file dirname $argv0]]
set fossilexe [file normalize [lindex $argv 0]]
set is_windows [expr {$::tcl_platform(platform) eq "windows"}]
set is_cygwin [regexp {^CYGWIN} $::tcl_platform(os)]

if {$::is_windows} {
  if {[string length [file extension $fossilexe]] == 0} {
    append fossilexe .exe
  }
  set outside_fossil_repo [expr ![file exists "$::testfiledir\\..\\_FOSSIL_"]]
} else {
  set outside_fossil_repo [expr ![file exists "$::testfiledir/../.fslckout"]]
}

catch {exec $::fossilexe changes --changed} res
set dirty_ckout [string length $res]

set argv [lrange $argv 1 end]

set i [lsearch $argv -keep]
if {$i>=0} {
  set KEEP 1
  set argv [lreplace $argv $i $i]
} else {
  set KEEP 0
}

set i [lsearch $argv -halt]
if {$i>=0} {
  set HALT 1
  set argv [lreplace $argv $i $i]
} else {
  set HALT 0
}

set i [lsearch $argv -prot]
if {$i>=0} {
  set PROT 1
  set argv [lreplace $argv $i $i]
} else {
  set PROT 0
}

set i [lsearch $argv -verbose]
if {$i>=0} {
  set VERBOSE 1
  set argv [lreplace $argv $i $i]
} else {
  set VERBOSE 0
}

set i [lsearch $argv -quiet]
if {$i>=0} {
  set QUIET 1
  set argv [lreplace $argv $i $i]
} else {
  set QUIET 0
}

set i [lsearch $argv -strict]
if {$i>=0} {
  set STRICT 1
  set argv [lreplace $argv $i $i]
} else {
  set STRICT 0
}

if {[llength $argv]==0} {
  foreach f [lsort [glob $testdir/*.test]] {
    set base [file root [file tail $f]]
    lappend argv $base
  }
}

# start protocol
#
proc protInit {cmd} {
  if {$::PROT} {
    set out [open [file join $::testrundir prot] w]
    fconfigure $out -translation platform
    puts $out "starting tests with: $cmd"
    close $out
  }
}
# Run the fossil program

# write protocol
#
proc protOut {msg {noQuiet 0}} {
  if {$noQuiet || !$::QUIET} {
    puts stdout $msg
  }
  if {$::PROT} {
    set out [open [file join $::testrundir prot] a]
    fconfigure $out -translation platform
    puts $out $msg
    close $out
  }
}

# write a dict with just enough formatting
# to make it human readable
#
proc protOutDict {dict {pattern *}} {
   set longest [tcl::mathfunc::max 0 {*}[lmap key [dict keys $dict $pattern] {string length $key}]]
   dict for {key value} $dict {
      protOut [format "%-${longest}s = %s" $key $value]
   }
}


# Run the Fossil program with the specified arguments.
#
# Consults the VERBOSE global variable to determine if
# diagnostics should be emitted when no error is seen.
# Sets the CODE and RESULT global variables for use in
# test expressions.
#
proc fossil {args} {
  return [uplevel 1 fossil_maybe_answer [list ""] $args]
}

# Run the Fossil program with the specified arguments
# and possibly answer the first prompt, if any.
#
# Consults the VERBOSE global variable to determine if
# diagnostics should be emitted when no error is seen.
# Sets the CODE and RESULT global variables for use in
# test expressions.
#
proc fossil_maybe_answer {answer args} {
  global fossilexe
  set cmd $fossilexe
  set expectError 0
  set index [lsearch -exact $args -expectError]
  if {$index != -1} {
    set expectError 1
    set args [lreplace $args $index $index]
  }
  set keepNewline 0
  set index [lsearch -exact $args -keepNewline]
  if {$index != -1} {
    set keepNewline 1
    set args [lreplace $args $index $index]
  }
  set whatIf 0
  set index [lsearch -exact $args -whatIf]
  if {$index != -1} {
    set whatIf 1
    set args [lreplace $args $index $index]
  }
  foreach a $args {
    lappend cmd $a
  }
  puts $cmd
  protOut $cmd

  flush stdout
  if {$whatIf} {
    protOut [pwd]; protOut $answer
    set result WHAT-IF-MODE; set rc 42
  } else {
    if {[string length $answer] > 0} {
      protOut $answer
      set prompt_file [file join $::tempPath fossil_prompt_answer]
      write_file $prompt_file $answer\n
      set execCmd [list eval exec]
      if {$keepNewline} {lappend execCmd -keepnewline}
      lappend execCmd $cmd <$prompt_file
  set rc [catch {eval exec $cmd} result]
      set rc [catch $execCmd result]
      file delete $prompt_file
    } else {
      set execCmd [list eval exec]
      if {$keepNewline} {lappend execCmd -keepnewline}
      lappend execCmd $cmd
      set rc [catch $execCmd result]
    }
  }
  set ab(str) {child process exited abnormally}
  set ab(len) [string length $ab(str)]
  set ab(off) [expr {$ab(len) - 1}]
  if {$rc && $expectError && \
      [string range $result end-$ab(off) end] eq $ab(str)} {
    set result [string range $result 0 end-$ab(len)]
  }
  global RESULT CODE
  set CODE $rc
  if {!$whatIf} {
    if {($rc && !$expectError) || (!$rc && $expectError)} {
      protOut "ERROR ($rc): $result" 1
    } elseif {$::VERBOSE} {
      protOut "RESULT ($rc): $result"
    }
  }
  set RESULT $result
}

# Read a file into memory. 
# Read a file into memory.
#
proc read_file {filename} {
  set in [open $filename r]
  fconfigure $in -translation binary
  set txt [read $in [file size $filename]]
  close $in
  return $txt
}

# Write a file to disk
#
proc write_file {filename txt} {
  set out [open $filename w]
  fconfigure $out -translation binary
  puts -nonewline $out $txt
  close $out
}
proc write_file_indented {filename txt} {
  write_file $filename [string trim [string map [list "\n  " \n] $txt]]\n
}

# Returns the list of all supported versionable settings.
#
proc get_versionable_settings {} {
  #
  # TODO: If the list of supported versionable settings in "db.c" is modified,
  #       this list (and procedure) most likely needs to be modified as well.
  #
  set result [list \
      binary-glob \
      clean-glob \
      crlf-glob \
      crnl-glob \
      dotfiles \
      empty-dirs \
      encoding-glob \
      ignore-glob \
      keep-glob \
      manifest]

  return [lsort -dictionary $result]
}

# Returns the list of all supported settings.
#
proc get_all_settings {} {
  #
  # TODO: If the list of supported settings in "db.c" is modified, this list
  #       (and procedure) most likely needs to be modified as well.
  #
  set result [list \
      access-log \
      admin-log \
      allow-symlinks \
      auto-captcha \
      auto-hyperlink \
      auto-hyperlink-delay \
      auto-hyperlink-mouseover \
      auto-shun \
      autosync \
      autosync-tries \
      backoffice-disable \
      backoffice-logfile \
      backoffice-nodelay \
      binary-glob \
      case-sensitive \
      chat-alert-sound \
      chat-initial-history \
      chat-inline-images \
      chat-keep-count \
      chat-keep-days \
      chat-poll-timeout \
      chat-timeline-user \
      clean-glob \
      clearsign \
      comment-format \
      crlf-glob \
      crnl-glob \
      default-csp \
      default-perms \
      default-skin \
      diff-binary \
      diff-command \
      dont-commit \
      dont-push \
      dotfiles \
      editor \
      email-admin \
      email-listid \
      email-renew-interval \
      email-self \
      email-send-command \
      email-send-db \
      email-send-dir \
      email-send-method \
      email-send-relayhost \
      email-subname \
      email-url \
      empty-dirs \
      encoding-glob \
      exec-rel-paths \
      fileedit-glob \
      forbid-delta-manifests \
      forum-close-policy \
      gdiff-command \
      gmerge-command \
      hash-digits \
      hooks \
      http-port \
      https-login \
      ignore-glob \
      keep-glob \
      large-file-size \
      localauth \
      lock-timeout \
      main-branch \
      mainmenu \
      manifest \
      max-cache-entry \
      max-loadavg \
      max-upload \
      mimetypes \
      mtime-changes \
      mv-rm-files \
      pgp-command \
      preferred-diff-type \
      proxy \
      redirect-to-https \
      relative-paths \
      repo-cksum \
      repolist-skin \
      robot-restrict \
      robots-txt \
      safe-html \
      self-pw-reset \
      self-register \
      sitemap-extra \
      ssh-command \
      ssl-ca-location \
      ssl-identity \
      tclsh \
      th1-setup \
      th1-uri-regexp \
      ticket-default-report \
      user-color-map \
      uv-sync \
      web-browser]

  fossil test-th-eval "hasfeature legacyMvRm"

  if {[normalize_result] eq "1"} {
    lappend result mv-rm-files
  }

  fossil test-th-eval "hasfeature tcl"

  if {[normalize_result] eq "1"} {
    lappend result tcl tcl-setup
  }

  fossil test-th-eval "hasfeature th1Docs"

  if {[normalize_result] eq "1"} {
    lappend result th1-docs
  }

  fossil test-th-eval "hasfeature th1Hooks"

  if {[normalize_result] eq "1"} {
    lappend result th1-hooks
  }

  return [lsort -dictionary $result]
}

# Return true if two files are the same
#
proc same_file {a b} {
  set x [read_file $a]
  regsub -all { +\n} $x \n x
  set y [read_file $b]
  regsub -all { +\n} $y \n y
  if {$x == $y} {
    return 1
  } else {
    if {$::VERBOSE} {
      protOut "NOT_SAME_FILE($a): \{\n$x\n\}"
      protOut "NOT_SAME_FILE($b): \{\n$y\n\}"
    }
    return 0
  }
}

# Return true if two strings refer to the
# same uuid. That is, the shorter is a prefix
# of the longer.
#
proc same_uuid {a b} {
  set na [string length $a]
  set nb [string length $b]
  if {$na == $nb} {
  return [expr {$x==$y}]
    return [expr {$a eq $b}]
  }
  if {$na < $nb} {
    return [string match "$a*" $b]
  }
  return [string match "$b*" $a]
}

# Return a prefix of a uuid, defaulting to 10 chars.
#
proc short_uuid {uuid {len 10}} {
  string range $uuid 0 $len-1
}


proc require_no_open_checkout {} {
  if {[info exists ::env(FOSSIL_TEST_DANGEROUS_IGNORE_OPEN_CHECKOUT)] && \
      $::env(FOSSIL_TEST_DANGEROUS_IGNORE_OPEN_CHECKOUT) eq "YES_DO_IT"} {
    return
  }
  catch {exec $::fossilexe info} res
  if {[regexp {local-root:} $res]} {
    global skipped_tests testfile
    lappend skipped_tests $testfile
    set projectName <unknown>
    set localRoot <unknown>
    regexp -line -- {^project-name: (.*)$} $res dummy projectName
    set projectName [string trim $projectName]
    regexp -line -- {^local-root: (.*)$} $res dummy localRoot
    set localRoot [string trim $localRoot]
    error "Detected an open checkout of project \"$projectName\",\
rooted at \"$localRoot\", testing halted."
  }
}

proc get_script_or_fail {} {
  set fileName [file normalize [info script]]
  if {[string length $fileName] == 0 || ![file exists $fileName]} {
    error "Failed to obtain the file name of the test being run."
  }
  return $fileName
}

proc robust_delete { path {force ""} } {
  set error "unknown error"
  for {set try 0} {$try < 10} {incr try} {
    if {$force eq "YES_DO_IT"} {
      if {[catch {file delete -force $path} error] == 0} {
        return
      }
    } else {
      if {[catch {file delete $path} error] == 0} {
        return
      }
    }
    after [expr {$try * 100}]
  }
  error "Could not delete \"$path\", error: $error"
}

proc test_cleanup_then_return {} {
  global skipped_tests testfile
  lappend skipped_tests $testfile
  uplevel 1 [list test_cleanup]
  return -code return
}

proc test_cleanup {} {
  if {$::KEEP} {
      # To avoid errors with require_no_open_checkout, cd out of here.
      if {[info exists ::tempSavedPwd]} {cd $::tempSavedPwd; unset ::tempSavedPwd}
      return
  }
  if {![info exists ::tempRepoPath]} {return}
  if {![file exists $::tempRepoPath]} {return}
  if {![file isdirectory $::tempRepoPath]} {return}
  set tempPathEnd [expr {[string length $::tempPath] - 1}]
  if {[string length $::tempPath] == 0 || \
      [string range $::tempRepoPath 0 $tempPathEnd] ne $::tempPath} {
    error "Temporary repository path has wrong parent during cleanup."
  }
  if {[info exists ::tempSavedPwd]} {cd $::tempSavedPwd; unset ::tempSavedPwd}
  # First, attempt to delete the specific temporary repository directories
  # for this test file.
  set scriptName [file tail [get_script_or_fail]]
  foreach repoSeed $::tempRepoSeeds {
    set repoPath [file join $::tempRepoPath $repoSeed $scriptName]
    robust_delete $repoPath YES_DO_IT; # FORCE, arbitrary children.
    set seedPath [file join $::tempRepoPath $repoSeed]
    robust_delete $seedPath; # NO FORCE.
  }
  # Next, attempt to gracefully delete the temporary repository directory
  # for this process.
  robust_delete $::tempRepoPath
  # Finally, attempt to gracefully delete the temporary home directory,
  # unless forbidden by external forces.
  if {![info exists ::tempKeepHome]} {delete_temporary_home}
}

proc delete_temporary_home {} {
  if {$::KEEP} {return}; # All cleanup disabled?
  if {$::is_windows || $::is_cygwin} {
    robust_delete [file join $::tempHomePath _fossil]
  } else {
    robust_delete [file join $::tempHomePath .fossil]
  }
  robust_delete $::tempHomePath
}

proc is_home_elsewhere {} {
  return [expr {[info exists ::env(FOSSIL_HOME)] && \
      $::env(FOSSIL_HOME) eq $::tempHomePath}]
}

proc set_home_to_elsewhere {} {
  #
  # Fossil will write data on $HOME (or $FOSSIL_HOME).  We need not
  # to clutter the real $HOME (or $FOSSIL_HOME) of the test caller.
  #
  if {[is_home_elsewhere]} {return}
  set ::env(FOSSIL_HOME) $::tempHomePath
}

#
# Create and open a new Fossil repository and clean the checkout
#
proc test_setup {{filename ".rep.fossil"}} {
  set_home_to_elsewhere
  if {![info exists ::tempRepoPath]} {
    set ::tempRepoPath [file join $::tempPath repo_[pid]]
  }
  set repoSeed [appendArgs [string trim [clock seconds] -] _ [getSeqNo]]
  lappend ::tempRepoSeeds $repoSeed
  set repoPath [file join \
      $::tempRepoPath $repoSeed [file tail [get_script_or_fail]]]
  if {[catch {
    file mkdir $repoPath
  } error] != 0} {
    error "Could not make directory \"$repoPath\",\
please set TEMP variable in environment, error: $error"
  }
  if {![info exists ::tempSavedPwd]} {set ::tempSavedPwd [pwd]}; cd $repoPath
  if {[string length $filename] > 0} {
    exec $::fossilexe new $filename
    exec $::fossilexe open $filename
    exec $::fossilexe set mtime-changes off
  }
  return $repoPath
}

# This procedure only returns non-zero if the Tcl integration feature was
# enabled at compile-time and is now enabled at runtime.
proc is_tcl_usable_by_fossil {} {
  fossil test-th-eval "hasfeature tcl"
  if {[normalize_result] ne "1"} {return 0}
  fossil test-th-eval "setting tcl"
  if {[normalize_result] eq "1"} {return 1}
  fossil test-th-eval --open-config "setting tcl"
  if {[normalize_result] eq "1"} {return 1}
  return [info exists ::env(TH1_ENABLE_TCL)]
}

# This procedure only returns non-zero if the TH1 hooks feature was enabled
# at compile-time and is now enabled at runtime.
proc are_th1_hooks_usable_by_fossil {} {
  fossil test-th-eval "hasfeature th1Hooks"
  if {[normalize_result] ne "1"} {return 0}
  fossil test-th-eval "setting th1-hooks"
  if {[normalize_result] eq "1"} {return 1}
  fossil test-th-eval --open-config "setting th1-hooks"
  if {[normalize_result] eq "1"} {return 1}
  return [info exists ::env(TH1_ENABLE_HOOKS)]
}

# Run the given command script inside the Fossil source repo checkout.
#
# Callers of this function must ensure two things:
#
# 1. This test run is in fact being done from within a Fossil repo
#    checkout directory.  If you are unsure, test $::outside_fossil_repo
#    or call one of the test_* wrappers below which do that for you.
#
#    As a rule, you should not be calling this function directly!
#
# 2. This test run is being done from a repo checkout directory that
#    doesn't have any uncommitted changes.  If it does, that affects the
#    output of any test based on the output of "fossil status",
#    "... diff", etc., which is likely to make the test appear to fail.
#    If you must call this function directly, test $::dirty_ckout and
#    skip the call if it's true.  The test_* wrappers do this for you.
#
# 3. The test does NOT modify the Fossil checkout tree in any way.
proc run_in_checkout { script {dir ""} } {
  if {[string length $dir] == 0} {set dir $::testfiledir}
  set savedPwd [pwd]; cd $dir
  set code [catch {
    uplevel 1 $script
  } result]
  cd $savedPwd; unset savedPwd
  return -code $code $result
}

# Wrapper for the above function pair.  The tscript parameter is an
# optional post-run test script.  Some callers choose instead to put
# the tests inline with the rscript commands.
#
# Be sure to adhere to the requirements of run_in_checkout!
proc test_block_in_checkout { name rscript {tscript ""} } {
  if {$::outside_fossil_repo || $::dirty_ckout} {
    set $::CODE 0
    set $::RESULT ""
  } else {
    uplevel 1 [list run_in_checkout $rscript]
    if {[string length $tscript] == 0} {
      return ""
    } else {
      set code [catch {
        uplevel 1 $tscript
      } result]
      return -code $code $result
    }
  }
}

# Single-test wrapper for the above.
proc test_in_checkout { name rscript tscript } {
  return test_block_in_checkout name rscript {
    test $name $tscript
  }
}

# Normalize file status lists (like those returned by 'fossil changes')
# so they can be compared using simple string comparison
#
proc normalize_status_list {list} {
  set normalized [list]
  set matches [regexp -all -inline -line {^\s*([A-Z_]+:?)\x20+(\S.*)$} $list]
  foreach {_ status file} $matches {
    lappend normalized [list $status [string trim $file]]
  }
  set normalized [lsort -index 1 $normalized]
  return $normalized
}

# Perform a test comparing two status lists
#
proc test_status_list {name result expected {constraints ""}} {
  set expected [normalize_status_list $expected]
  set result [normalize_status_list $result]
  if {$result eq $expected} {
    test $name 1 $constraints
  } else {
    protOut "  Expected:\n    [join $expected "\n    "]" 1
    protOut "  Got:\n    [join $result "\n    "]" 1
    test $name 0 $constraints
  }
}

# Perform a test on the contents of a file
#
proc test_file_contents {name path expected {constraints ""}} {
  if {[file exists $path]} {
    set result [read_file $path]
    set passed [expr {$result eq $expected}]
    if {!$passed} {
      set expectedLines [split $expected "\n"]
      set resultLines [split $result "\n"]
      protOut "  Expected:\n    [join $expectedLines "\n    "]" 1
      protOut "  Got:\n    [join $resultLines "\n    "]" 1
    }
  } else {
    set passed 0
    protOut "  File does not exist: $path" 1
  }
  test $name $passed $constraints
}

# Append all arguments into a single value and then returns it.
#
proc appendArgs {args} {
  eval append result $args
}

# Returns the value of the specified environment variable -OR- any empty
# string if it does not exist.
#
proc getEnvironmentVariable { name } {
  return [expr {[info exists ::env($name)] ? $::env($name) : ""}]
}

# Returns a usable temporary directory -OR- fails the testing process.
#
proc getTemporaryPath {} {
  #
  # NOTE: Build the list of "temporary directory" environment variables
  #       to check, including all reasonable "cases" of the environment
  #       variable names.
  #
  set names [list]

  #
  # TODO: Add more here, if necessary.
  #
  foreach name [list FOSSIL_TEST_TEMP FOSSIL_TEMP TEMP TMP] {
    lappend names [string toupper $name] [string tolower $name] \
        [string totitle $name]
  }

  #
  # NOTE: Check if we can use any of the environment variables.
  #
  foreach name $names {
    set value [getEnvironmentVariable $name]

    if {[string length $value] > 0} {
      set value [file normalize $value]

      if {[file exists $value] && [file isdirectory $value]} {
        return $value
      }
    }
  }

  #
  # NOTE: On non-Windows systems, fallback to /tmp if it is usable.
  #
  if {!$::is_windows} {
    set value /tmp

    if {[file exists $value] && [file isdirectory $value]} {
      return $value
    }
  }

  #
  # NOTE: There must be a usable temporary directory to continue testing.
  #
  error "Cannot find a usable temporary directory, testing halted."
}

# Return the name of the versioned settings file containing the TH1
# setup script.
#
proc getTh1SetupFileName {} {
  #
  # NOTE: This uses the "testdir" global variable provided by the
  #       test suite; alternatively, the root of the source tree
  #       could be obtained directly from Fossil.
  #
  return [file normalize [file join .fossil-settings th1-setup]]
}

# Return the saved name of the versioned settings file containing
# the TH1 setup script.
#
proc getSavedTh1SetupFileName {} {
  return [appendArgs [getTh1SetupFileName] . [pid]]
}

# Sets the TH1 setup script to the one provided.  Prior to calling
# this, the [saveTh1SetupFile] procedure should be called in order to
# preserve the existing TH1 setup script.  Prior to completing the test,
# the [restoreTh1SetupFile] procedure should be called to restore the
# original TH1 setup script.
#
proc writeTh1SetupFile { data } {
  set fileName [getTh1SetupFileName]
  file mkdir [file dirname $fileName]
  return [write_file $fileName $data]
}

# Saves the TH1 setup script file by renaming it, based on the current
# process ID.
#
proc saveTh1SetupFile {} {
  set oldFileName [getTh1SetupFileName]
  if {[file exists $oldFileName]} {
    set newFileName [getSavedTh1SetupFileName]
    catch {file delete $newFileName}
    file rename $oldFileName $newFileName
  }
}

# Restores the original TH1 setup script file by renaming it back, based
# on the current process ID.
#
proc restoreTh1SetupFile {} {
  set oldFileName [getSavedTh1SetupFileName]
  set newFileName [getTh1SetupFileName]
  if {[file exists $oldFileName]} {
    catch {file delete $newFileName}
    file rename $oldFileName $newFileName
  } else {
    #
    # NOTE: There was no TH1 setup script file, delete the test one.
    #
    file delete $newFileName
  }
}

# Perform a test
#
set test_count 0
proc test {name expr} {
  global bad_test
proc test {name expr {constraints ""}} {
  global bad_test ignored_test test_count RESULT
  incr test_count
  set knownBug [expr {"knownBug" in $constraints}]
  set r [uplevel 1 [list expr $expr]]
  if {$r} {
    if {$knownBug && !$::STRICT} {
      protOut "test $name OK (knownBug)?"
    } else {
    puts "test $name OK"
      protOut "test $name OK"
    }
  } else {
    if {$knownBug && !$::STRICT} {
      protOut "test $name FAILED (knownBug)!" 1
      lappend ignored_test $name
    } else {
    puts "test $name FAILED!"
    lappend bad_test $name
    if {$::HALT} exit
      protOut "test $name FAILED!" 1
      if {$::QUIET} {protOut "RESULT: $RESULT" 1}
      lappend bad_test $name
      if {$::HALT} {exit 1}
    }
  }
}
set bad_test {}
set ignored_test {}
set skipped_tests {}

# Return a random string N characters long.
#
set vocabulary 01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
append vocabulary "       ()*^!.eeeeeeeeaaaaattiioo   "
set nvocabulary [string length $vocabulary]
proc rand_str {N} {
164
165
166
167
168
169
170
171














































































































































































































172
173
174

































175
176



914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128


1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162

1163
1164
1165








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        set line [string range $line 0 $i]$stuff[string range $line $ip1 end]
      }
    }
    append out \n$line
  }
  return [string range $out 1 end]
}

# This procedure executes the "fossil server" command.  The return value
# is a list comprised of the new process identifier and the port on which
# the server started.  The varName argument refers to a variable
# where the "stop argument" is to be stored.  This value must eventually be
# passed to the [test_stop_server] procedure.
proc test_start_server { repository {varName ""} } {
  global fossilexe tempPath
  set command [list exec $fossilexe server --localhost]
  if {[string length $varName] > 0} {
    upvar 1 $varName stopArg
  }
  if {$::is_windows} {
    set stopArg [file join [getTemporaryPath] [appendArgs \
        [string trim [clock seconds] -] _ [getSeqNo] .stopper]]
    lappend command --stopper $stopArg
  }
  set outFileName [file join $tempPath [appendArgs \
      fossil_server_ [string trim [clock seconds] -] _ \
      [getSeqNo]]].out
  lappend command $repository >&$outFileName &
  set pid [eval $command]
  if {!$::is_windows} {
    set stopArg $pid
  }
  after 1000; # output might not be there yet
  set output [read_file $outFileName]
  if {![regexp {Listening.*TCP port (\d+)} $output dummy port]} {
    puts stdout "Could not detect Fossil server port, using default..."
    set port 8080; # return the default port just in case
  }
  return [list $pid $port $outFileName]
}

# This procedure stops a Fossil server instance that was previously started
# by the [test_start_server] procedure.  The value of the "stop argument"
# will vary by platform as will the exact method used to stop the server.
# The fileName argument is the name of a temporary output file to delete.
proc test_stop_server { stopArg pid fileName } {
  if {$::is_windows} {
    #
    # NOTE: On Windows, the "stop argument" must be the name of a file
    #       that does NOT already exist.
    #
    if {[string length $stopArg] > 0 && \
        ![file exists $stopArg] && \
        [catch {write_file $stopArg [clock seconds]}] == 0} {
      while {1} {
        if {[catch {
          #
          # NOTE: Using the TaskList utility requires Windows XP or
          #       later.
          #
          exec tasklist.exe /FI "PID eq $pid"
        } result] != 0 || ![regexp -- " $pid " $result]} {
          break
        }
        after 1000; # wait a bit...
      }
      file delete $stopArg
      if {[string length $fileName] > 0} {
        file delete $fileName
      }
      return true
    }
  } else {
    #
    # NOTE: On Unix, the "stop argument" must be an integer identifier
    #       that refers to an existing process.
    #
    if {[regexp {^(?:-)?\d+$} $stopArg] && \
        [catch {exec kill -TERM $stopArg}] == 0} {
      while {1} {
        if {[catch {
          #
          # TODO: Is this portable to all the supported variants of
          #       Unix?  It should be, it's POSIX.
          #
          exec ps -p $pid
        } result] != 0 || ![regexp -- "(?:^$pid| $pid) " $result]} {
          break
        }
        after 1000; # wait a bit...
      }
      if {[string length $fileName] > 0} {
        file delete $fileName
      }
      return true
    }
  }
  return false
}

# Executes the "fossil http" command.  The entire content of the HTTP request
# is read from the data file name, with [subst] being performed on it prior to
# submission.  Temporary input and output files are created and deleted.  The
# result will be the contents of the temoprary output file.
proc test_fossil_http { repository dataFileName url } {
  set suffix [appendArgs [pid] - [getSeqNo] - [clock seconds] .txt]
  set inFileName [file join $::tempPath [appendArgs test-http-in- $suffix]]
  set outFileName [file join $::tempPath [appendArgs test-http-out- $suffix]]
  set data [subst [read_file $dataFileName]]

  write_file $inFileName $data

  fossil http --in $inFileName --out $outFileName --ipaddr 127.0.0.1 \
      $repository --localauth --th-trace -expectError

  set result [expr {[file exists $outFileName] ? [read_file $outFileName] : ""}]

  if {1} {
    catch {file delete $inFileName}
    catch {file delete $outFileName}
  }

  return $result
}

# obtains and increments a "sequence number" for this test run.
proc getSeqNo {} {
  upvar #0 seqNo seqNo
  if {![info exists seqNo]} {
    set seqNo 0
  }
  return [incr seqNo]
}

# fixup the whitespace in the result to make it easier to compare.
proc normalize_result {} {
  return [string map [list \r\n \n] [string trim $::RESULT]]
}

# fixup the line-endings in the result to make it easier to compare.
proc normalize_result_no_trim {} {
  return [string map [list \r\n \n] $::RESULT]
}

# returns the first line of the normalized result.
proc first_data_line {} {
  return [lindex [split [normalize_result] \n] 0]
}

# returns the second line of the normalized result.
proc second_data_line {} {
  return [lindex [split [normalize_result] \n] 1]
}

# returns the third line of the normalized result.
proc third_data_line {} {
  return [lindex [split [normalize_result] \n] 2]
}

# returns the last line of the normalized result.
proc last_data_line {} {
  return [lindex [split [normalize_result] \n] end]
}

# returns the second to last line of the normalized result.
proc next_to_last_data_line {} {
  return [lindex [split [normalize_result] \n] end-1]
}

# returns the third to last line of the normalized result.
proc third_to_last_data_line {} {
  return [lindex [split [normalize_result] \n] end-2]
}

set tempPath [getTemporaryPath]

if {$is_windows} {
  set tempPath [string map [list \\ /] $tempPath]
}

if {[catch {
  set tempFile [file join $tempPath temporary.txt]
  write_file $tempFile [clock seconds]; file delete $tempFile
} error] != 0} {
  error "Could not write file \"$tempFile\" in directory \"$tempPath\",\
please set TEMP variable in environment, error: $error"
}

set tempHomePath [file join $tempPath home_[pid]]

# Close stdin to avoid errors on wrapped text for narrow terminals.
# Closing stdin means that terminal detection returns 0 width, in turn
# causing the relvant strings to be printed on a single line.
# However, closing stdin makes file descriptor 0 avaailable on some systems
# and/or TCL implementations, which triggers fossil to complain about opening
# databases using fd 0. Avoid this by opening the script, consuming fd 0.
close stdin
set possibly_fd0 [open [info script] r]

if {[catch {
  file mkdir $tempHomePath
} error] != 0} {
  error "Could not make directory \"$tempHomePath\",\
please set TEMP variable in environment, error: $error"
}


protInit $fossilexe
set ::tempKeepHome 1

# Start in tempHomePath to help avoid errors with require_no_open_checkout
set startPwd [pwd]
cd $tempHomePath

foreach testfile $argv {
  puts "***** $testfile ******"
  source $testdir/$testfile.test
  protOut "***** $testfile ******"
  if { [catch {source $testdir/$testfile.test} testerror testopts] } {
    test test-framework-$testfile 0
    protOut "!!!!! $testfile: $testerror"
    protOutDict $testopts"
  } else {
    test test-framework-$testfile 1
  }
  protOut "***** End of $testfile: [llength $bad_test] errors so far ******"
}
cd $startPwd
unset ::tempKeepHome; delete_temporary_home

# Clean up the file descriptor
close $possibly_fd0

set nErr [llength $bad_test]
if {$nErr>0 || !$::QUIET} {
  protOut "***** Final results: $nErr errors out of $test_count tests" 1
}
if {$nErr>0} {
  protOut "***** Considered failures: $bad_test" 1
}
set nErr [llength $ignored_test]
if {$nErr>0 || !$::QUIET} {
  protOut "***** Ignored results: $nErr ignored errors out of $test_count tests" 1
}
if {$nErr>0} {
  protOut "***** Ignored failures: $ignored_test" 1
}
set nSkipped [llength $skipped_tests]
if {$nSkipped>0} {
  protOut "***** Skipped tests: $skipped_tests" 1
}
puts "[llength $bad_test] errors: $bad_test"
if {$bad_test>0} {
  exit 1
}
Added test/th1-docs-input.txt.




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GET ${url} HTTP/1.1
Host: localhost
User-Agent: Fossil

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#
# Copyright (c) 2015 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# TH1 Docs
#

fossil test-th-eval "hasfeature th1Docs"

if {[normalize_result] ne "1"} {
  puts "Fossil was not compiled with TH1 docs support."
  test_cleanup_then_return
}

fossil test-th-eval "hasfeature tcl"

if {[normalize_result] ne "1"} {
  puts "Fossil was not compiled with Tcl support."
  test_cleanup_then_return
}

###############################################################################

test_setup

###############################################################################

set env(TH1_ENABLE_DOCS) 1; # TH1 docs must be enabled for this test.
set env(TH1_ENABLE_TCL) 1; # Tcl integration must be enabled for this test.

###############################################################################

set data [fossil info]

regexp -line -- {^repository:   (.*)$} $data dummy repository

if {[string length $repository] == 0 || ![file exists $repository]} {
  error "unable to locate repository"
}

set dataFileName [file join $::testdir th1-docs-input.txt]
set origFileStat [file join $::testdir fileStat.th1]

if {![file exists $origFileStat]} {
  error "unable to locate [$origFileStat]"
}

file copy $origFileStat fileStat.th1
fossil add fileStat.th1
fossil commit -m "Add fileStat.th1"

###############################################################################

set RESULT [test_fossil_http \
  $repository $dataFileName /doc/trunk/fileStat.th1]

test th1-docs-1a {[regexp {<title>Unnamed Fossil Project: fileStat.th1</title>} $RESULT]}
test th1-docs-1b {[regexp {>\[[0-9a-f]{40,64}\]<} $RESULT]}
test th1-docs-1c {[regexp { contains \d+ files\.} $RESULT]}

###############################################################################

test_cleanup
Added test/th1-hooks-input.txt.




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Host: localhost
User-Agent: Fossil

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#
# Copyright (c) 2011 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# TH1 Hooks
#

fossil test-th-eval "hasfeature th1Hooks"

if {[normalize_result] ne "1"} {
  puts "Fossil was not compiled with TH1 hooks support."
  test_cleanup_then_return
}

###############################################################################

test_setup

###############################################################################

write_file f1 "f1"; fossil add f1; fossil commit -m "c1"

###############################################################################

set env(TH1_ENABLE_HOOKS) 1; # TH1 hooks must be enabled for this test.

###############################################################################

set testTh1Setup {
  proc initialize_hook_log {} {
    if {![info exists ::hook_log]} {
      set ::hook_log ""
    }
  }

  proc append_hook_log { args } {
    initialize_hook_log
    if {[string length $::hook_log] > 0} {
      set ::hook_log "$::hook_log "
    }
    for {set i 0} {$i < [llength $args]} {set i [expr {$i + 1}]} {
      set ::hook_log $::hook_log[lindex $args $i]
    }
  }

  proc emit_hook_log {} {
    initialize_hook_log
    html "\n<h1><b>$::hook_log</b></h1>\n"
  }

  proc command_hook {} {
    append_hook_log command_hook " " $::cmd_name
    if {$::cmd_name eq "test1"} {
      puts [repository]; continue
    } elseif {$::cmd_name eq "test2"} {
      error "unsupported command"
    } elseif {$::cmd_name eq "test3"} {
      emit_hook_log
      break "TH_BREAK return code"
    } elseif {$::cmd_name eq "test4"} {
      emit_hook_log
      return -code 5 "TH_RETURN return code"
    } elseif {$::cmd_name eq "timeline"} {
      set length [llength $::cmd_args]
      set length [expr {$length - 1}]
      if {[lindex $::cmd_args $length] eq "custom"} {
        append_hook_log "CUSTOM TIMELINE"
        emit_hook_log
        return "custom timeline"
      } elseif {[lindex $::cmd_args $length] eq "custom2"} {
        emit_hook_log
        puts "+++ some stuff here +++"
        continue "custom2 timeline"
      } elseif {[lindex $::cmd_args $length] eq "custom3"} {
        emit_hook_log
        return -code 5 "TH_RETURN return code"
      } elseif {[lindex $::cmd_args $length] eq "now"} {
        emit_hook_log
        return "now timeline"
      } else {
        emit_hook_log
        error "unsupported timeline"
      }
    }
  }

  proc command_notify {} {
    append_hook_log command_notify " " $::cmd_name
    emit_hook_log
  }

  proc webpage_hook {} {
    append_hook_log webpage_hook " " $::web_name
    if {$::web_name eq "test1"} {
      puts [repository]; continue
    }
  }

  proc webpage_notify {} {
    append_hook_log webpage_notify " " $::web_name
    emit_hook_log
  }
}

###############################################################################

set data [fossil info]
regexp -line -- {^repository:   (.*)$} $data dummy repository

if {[string length $repository] == 0 || ![file exists $repository]} {
  error "unable to locate repository"
}

set dataFileName [file join $::testdir th1-hooks-input.txt]

###############################################################################

set savedTh1Setup [fossil settings th1-setup]
fossil settings th1-setup $testTh1Setup

###############################################################################

fossil timeline custom -expectError; # NOTE: Bad "WHEN" argument.
test th1-cmd-hooks-1a {[normalize_result] eq \
{<h1><b>command_hook timeline CUSTOM TIMELINE</b></h1>
unknown check-in or invalid date: custom}}

###############################################################################

fossil timeline custom2; # NOTE: Bad "WHEN" argument.
test th1-cmd-hooks-1b {[normalize_result] eq \
{<h1><b>command_hook timeline</b></h1>
+++ some stuff here +++
<h1><b>command_hook timeline command_notify timeline</b></h1>}}

###############################################################################

fossil timeline custom3 -expectError; # NOTE: Bad "WHEN" argument.

test th1-cmd-hooks-1c {[normalize_result] eq \
{<h1><b>command_hook timeline</b></h1>
unknown check-in or invalid date: custom3}}

###############################################################################

fossil timeline
test th1-cmd-hooks-2a {[first_data_line] eq \
    {<h1><b>command_hook timeline</b></h1>}}

test th1-cmd-hooks-2b {[second_data_line] eq {ERROR: unsupported timeline}}

###############################################################################

fossil timeline -n -1 now
test th1-cmd-hooks-3a {[first_data_line] eq \
    {<h1><b>command_hook timeline</b></h1>}}

test th1-cmd-hooks-3b \
    {[regexp -- {=== \d{4}-\d{2}-\d{2} ===} [second_data_line]]}

test th1-cmd-hooks-3c \
    {[regexp -- {--- line limit \(\d+\) reached ---} [third_to_last_data_line]]}

test th1-cmd-hooks-3d {[last_data_line] eq \
    {<h1><b>command_hook timeline command_notify timeline</b></h1>}}

###############################################################################

fossil test1
test th1-custom-cmd-1a {[next_to_last_data_line] eq $repository}

test th1-custom-cmd-1b {[last_data_line] eq \
    {<h1><b>command_hook test1 command_notify test1</b></h1>}}

###############################################################################

fossil test2
test th1-custom-cmd-2a {[first_data_line] eq {ERROR: unsupported command}}

###############################################################################

fossil test3
test th1-custom-cmd-3a {[string trim $RESULT] eq \
    {<h1><b>command_hook test3</b></h1>}}

###############################################################################

fossil test4 -expectError

test th1-custom-cmd-4a {[first_data_line] eq \
    {<h1><b>command_hook test4</b></h1>}}

test th1-custom-cmd-4b {[regexp -- \
    {: unknown command: test4$} [second_data_line]]}

test th1-custom-cmd-4d {[regexp -- \
    {: use "help" for more information$} [third_data_line]]}

###############################################################################

set RESULT [test_fossil_http $repository $dataFileName /timeline]

test th1-web-hooks-1a {[regexp \
    {<title>Unnamed Fossil Project: Timeline</title>} $RESULT]}

test th1-web-hooks-1b {[regexp [appendArgs \
    {<h1><b>command_hook http webpage_hook timeline} " " \
    {webpage_notify timeline</b></h1>}] $RESULT]}

###############################################################################

set RESULT [test_fossil_http $repository $dataFileName /test1]
test th1-custom-web-1a {[next_to_last_data_line] eq $repository}

test th1-custom-web-1b {[last_data_line] eq \
    {<h1><b>command_hook http webpage_hook test1 webpage_notify test1</b></h1>}}

###############################################################################

fossil settings th1-setup $savedTh1Setup

###############################################################################

test_cleanup
Added test/th1-repo.test.
























































































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#
# Copyright (c) 2011 D. Richard Hipp
# Copyright (c) 2015 Ch. Drexler
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
#   Chris Drexler <ckolumbus@ac-drexler.de>
#
############################################################################
#
# TH1 tests that may modify the repository
#

set path [file dirname [info script]]

require_no_open_checkout

########################################
# Setup: Add Files and Commit          #
########################################

test_setup; set rootDir [file normalize [pwd]]

write_file f1.md  "f1"
write_file f2.md  "f2"
write_file f3.txt "f3"
write_file f4.md  "f4"

file mkdir [file join $rootDir subdirA]
# NOTE: There are no files in subdirA.

file mkdir [file join $rootDir subdirB]
write_file [file join $rootDir subdirB f5.md] "f5"
write_file [file join $rootDir subdirB f6.md] "f6"
write_file [file join $rootDir subdirB f7.txt] "f7"
write_file [file join $rootDir subdirB f8.md] "f8"
write_file [file join $rootDir subdirB f9.wiki] "f9"

file mkdir [file join $rootDir subdirC]
write_file [file join $rootDir subdirC f10.md] "f10"
write_file [file join $rootDir subdirC f11t.xt] "f11"

set files_md [list subdirB/f5.md subdirB/f6.md subdirB/f8.md subdirC/f10.md]

fossil add $rootDir
fossil commit -m "c1"

###############################################################################

fossil test-th-eval --open-config "dir trunk subdir*/*.md"
test th1-dir-1 {[llength $RESULT] eq [llength $files_md]}

set n 1
foreach i $RESULT j $files_md {
   test th1-dir-2.$n {$i eq $j}
   set n [expr {$n + 1}]
}

###############################################################################

set dateTime {\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}}
fossil test-th-eval --open-config "dir trunk subdir*/*.md 1"
test th1-dir-3.1 {[lindex [lindex $RESULT 0] 0] eq "subdirB/f5.md"}
test th1-dir-3.2 {[lindex [lindex $RESULT 0] 1] == 2}
test th1-dir-3.3 {[regexp -- $dateTime [lindex [lindex $RESULT 0] 2]]}
test th1-dir-3.4 {[lindex [lindex $RESULT 1] 0] eq "subdirB/f6.md"}
test th1-dir-3.5 {[lindex [lindex $RESULT 1] 1] == 2}
test th1-dir-3.6 {[regexp -- $dateTime [lindex [lindex $RESULT 1] 2]]}
test th1-dir-3.7 {[lindex [lindex $RESULT 2] 0] eq "subdirB/f8.md"}
test th1-dir-3.8 {[lindex [lindex $RESULT 2] 1] == 2}
test th1-dir-3.9 {[regexp -- $dateTime [lindex [lindex $RESULT 2] 2]]}
test th1-dir-3.10 {[lindex [lindex $RESULT 3] 0] eq "subdirC/f10.md"}
test th1-dir-3.11 {[lindex [lindex $RESULT 3] 1] == 3}
test th1-dir-3.12 {[regexp -- $dateTime [lindex [lindex $RESULT 3] 2]]}

###############################################################################

test_cleanup
Added test/th1-tcl.test.





























































































































































































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#
# Copyright (c) 2011 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# TH1/Tcl integration
#

set path [file dirname [info script]]

###############################################################################

fossil test-th-eval "hasfeature tcl"

if {[normalize_result] ne "1"} {
  puts "Fossil was not compiled with Tcl support."
  test_cleanup_then_return
}

###############################################################################

test_setup

###############################################################################

set env(TH1_ENABLE_TCL) 1; # Tcl integration must be enabled for this test.

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl1.txt]]

test th1-tcl-1 {[regexp -- {^tclReady\(before\) = 0
tclReady\(after\) = 1
\d+
\d+
\d+
via Tcl invoke
4
4
two words
one_word
three words now
\d+
two words
4
\d+
two words
4
\d+
one_word
three words now$} [normalize_result]]}

###############################################################################

if {[catch {package require sqlite3}] == 0} {
  fossil test-th-render --open-config \
      [file nativename [file join $path th1-tcl2.txt]]

  test th1-tcl-2 {[regexp -- {^\d+$} [normalize_result]]}
} else {
  puts stderr "Skipping 'th1-tcl-2', SQLite package for Tcl not available"
}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl3.txt]]

test th1-tcl-3 {$RESULT eq {<hr><p class="thmainError">ERROR:\
invalid command name &quot;bad_command&quot;</p>}}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl4.txt]]

test th1-tcl-4 {$RESULT eq {<hr><p class="thmainError">ERROR:\
divide by zero</p>}}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl5.txt]]

test th1-tcl-5 {$RESULT eq {<hr><p class="thmainError">ERROR:\
Tcl command not found: bad_command</p>} || $RESULT eq {<hr><p\
class="thmainError">ERROR: invalid command name &quot;bad_command&quot;</p>}}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl6.txt]]

test th1-tcl-6 {$RESULT eq {<hr><p class="thmainError">ERROR:\
no such command:  bad_command</p>}}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl7.txt]]

test th1-tcl-7 {$RESULT eq {<hr><p class="thmainError">ERROR:\
syntax error in expression: &quot;2**0&quot;</p>}}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl8.txt]]

test th1-tcl-8 {$RESULT eq {<hr><p class="thmainError">ERROR:\
cannot invoke Tcl command: tailcall</p>} || $RESULT eq {<hr><p\
class="thmainError">ERROR: tailcall can only be called from a proc or\
lambda</p>} || $RESULT eq {<hr><p class="thmainError">ERROR: This test\
requires Tcl 8.6 or higher.</p>}}

###############################################################################

fossil test-th-render --open-config \
    [file nativename [file join $path th1-tcl9.txt]]

# Under cygwin, the printed name with Usage: strips the extension
if { $::is_cygwin && [file extension $fossilexe] eq ".exe" } {
  set fossilexeref [string range $fossilexe 0 end-4]
} else {
  set fossilexeref $fossilexe
}

test th1-tcl-9 {[string trim $RESULT] eq [list [file tail $fossilexeref] 3 \
[list test-th-render --open-config [file nativename [file join $path \
th1-tcl9.txt]]]]}

###############################################################################

fossil test-th-eval "tclMakeSafe a"
test th1-tcl-10 {[normalize_result] eq \
{TH_ERROR: wrong # args: should be "tclMakeSafe"}}

###############################################################################

fossil test-th-eval "list \[tclIsSafe\] \[tclMakeSafe\] \[tclIsSafe\]"
test th1-tcl-11 {[normalize_result] eq {0 {} 1}}

###############################################################################

fossil test-th-eval "tclMakeSafe; tclMakeSafe"
test th1-tcl-12 {[normalize_result] eq \
{TH_ERROR: Tcl interpreter is already 'safe'}}

###############################################################################

fossil test-th-eval "tclEval pwd; tclMakeSafe; tclEval pwd"
test th1-tcl-13 {[normalize_result] eq {TH_ERROR: invalid command name "pwd"}}

###############################################################################

fossil test-th-eval "tclMakeSafe; tclExpr {0 + \[string length \[pwd\]\]}"
test th1-tcl-14 {[normalize_result] eq {TH_ERROR: invalid command name "pwd"}}

###############################################################################

fossil test-th-eval "tclInvoke pwd; tclMakeSafe; tclInvoke pwd"
test th1-tcl-15 {[normalize_result] eq {TH_ERROR: Tcl command not found: pwd}}

###############################################################################

fossil test-th-eval "tclMakeSafe; tclEval set x 2"
test th1-tcl-16 {[normalize_result] eq {2}}

###############################################################################

fossil test-th-eval "tclMakeSafe; tclEval set x 2; tclEval info vars x"
test th1-tcl-17 {[normalize_result] eq {x}}

###############################################################################

test_cleanup
Added test/th1-tcl1.txt.





























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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}
  doOut "tclReady(before) = [tclReady]"
  set channel stdout; tclInvoke set channel $channel
  doOut "tclReady(after) = [tclReady]"
  doOut [tclEval clock seconds]
  doOut [tclEval {set x [clock seconds]}]
  tclEval {puts $channel "[clock seconds]"}
  tclInvoke puts $channel "via Tcl invoke"
  doOut [tclExpr 2+2]
  doOut [tclExpr 2 + 2]
  doOut [tclInvoke set x "two words"]
  doOut [tclInvoke eval set y one_word]
  doOut [tclInvoke eval {set z "three words now"}]
  doOut [set x [tclEval {set x [clock seconds]}]]
  doOut [tclInvoke th1Eval {set y "two words"}]
  doOut [set z [tclInvoke th1Expr {2+2}]]
  doOut $x
  doOut $y
  doOut $z
  doOut [tclEval set x]
  doOut [tclEval set y]
  doOut [tclEval set z]
</th1>
Added test/th1-tcl2.txt.



















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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  # NOTE: This test requires that the SQLite package be available for the Tcl
  #       interpreter that is linked to the Fossil executable.
  #
  tclInvoke set repository_name [repository 1]
  proc doOut {msg} {puts $msg; puts \n}
  doOut [tclEval {
    package require sqlite3
    sqlite3 db $repository_name -readonly true
    set x [db eval {SELECT COUNT(*) FROM user;}]
    db close
    return $x
  }]
</th1>
Added test/th1-tcl3.txt.









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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}
  doOut [tclEval bad_command]
</th1>
Added test/th1-tcl4.txt.









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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}
  doOut [tclExpr 2/0]
</th1>
Added test/th1-tcl5.txt.









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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}
  doOut [tclInvoke bad_command]
</th1>
Added test/th1-tcl6.txt.









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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}
  doOut [tclEval th1Eval bad_command]
</th1>
Added test/th1-tcl7.txt.



















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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}

  #
  # BUGBUG: Attempting to divide by zero will crash TH1 with the error:
  #         "child killed: floating-point exception"
  #
  # doOut [tclEval th1Expr 2/0]

  #
  # NOTE: For now, just cause an expression syntax error.
  #
  doOut [tclEval th1Expr 2**0]
</th1>
Added test/th1-tcl8.txt.














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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}

  if {[tclInvoke set tcl_version] >= 8.6} {
    doOut [tclInvoke tailcall set x 1]
  } else {
    error "This test requires Tcl 8.6 or higher."
  }
</th1>
Added test/th1-tcl9.txt.









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<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  set channel stdout; tclInvoke set channel $channel
  tclEval {puts $channel [list [file tail $argv0] $argc $argv]}
</th1>
Added test/th1.test.










































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#
# Copyright (c) 2011 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# TH1 Commands
#

set path [file dirname [info script]]; test_setup

###############################################################################

set th1Tcl [is_tcl_usable_by_fossil]
set th1Hooks [are_th1_hooks_usable_by_fossil]

###############################################################################

fossil test-th-eval --open-config "setting abc"
test th1-setting-1 {$RESULT eq ""}

###############################################################################

fossil test-th-eval --open-config "setting -- abc"
test th1-setting-2 {$RESULT eq ""}

###############################################################################

fossil test-th-eval --open-config "setting -strict abc"
test th1-setting-3 {$RESULT eq {TH_ERROR: no value for setting "abc"}}

###############################################################################

fossil test-th-eval --open-config "setting -strict -- abc"
test th1-setting-4 {$RESULT eq {TH_ERROR: no value for setting "abc"}}

###############################################################################

fossil test-th-eval --open-config "setting autosync"
test th1-setting-5 {$RESULT eq 0 || $RESULT eq 1 || $RESULT eq "on"}

###############################################################################

fossil test-th-eval --open-config "setting -strict autosync"
test th1-setting-6 {$RESULT eq 0 || $RESULT eq 1 || $RESULT eq "on"}

###############################################################################

fossil test-th-eval --open-config "setting --"
test th1-setting-7 {$RESULT eq \
{TH_ERROR: wrong # args: should be "setting ?-strict? ?--? name"}}

###############################################################################

fossil test-th-eval --open-config "setting -strict --"
test th1-setting-8 {$RESULT eq \
{TH_ERROR: wrong # args: should be "setting ?-strict? ?--? name"}}

###############################################################################

fossil test-th-eval --open-config "setting -- --"
test th1-setting-9 {$RESULT eq {}}

###############################################################################

fossil test-th-eval --open-config "setting -strict -- --"
test th1-setting-10 {$RESULT eq {TH_ERROR: no value for setting "--"}}

###############################################################################

fossil test-th-eval "expr 42/0"
test th1-divide-by-zero-1 {$RESULT eq {TH_ERROR: Divide by 0: 42}}

###############################################################################

fossil test-th-eval "expr 42/0.0"
test th1-divide-by-zero-2 {$RESULT eq {TH_ERROR: Divide by 0: 42}}

###############################################################################

fossil test-th-eval "expr 42.0/0"
test th1-divide-by-zero-3 {$RESULT eq {TH_ERROR: Divide by 0: 42.0}}

###############################################################################

fossil test-th-eval "expr 42.0/0.0"
test th1-divide-by-zero-4 {$RESULT eq {TH_ERROR: Divide by 0: 42.0}}

###############################################################################

fossil test-th-eval "expr 42%0"
test th1-modulus-by-zero-1 {$RESULT eq {TH_ERROR: Modulo by 0: 42}}

###############################################################################

fossil test-th-eval "expr 42%0.0"
test th1-modulus-by-zero-2 {$RESULT eq {TH_ERROR: expected integer, got: "0.0"}}

###############################################################################

fossil test-th-eval "expr 42.0%0"
test th1-modulus-by-zero-3 {$RESULT eq \
{TH_ERROR: expected integer, got: "42.0"}}

###############################################################################

fossil test-th-eval "expr 42.0%0.0"
test th1-modulus-by-zero-4 {$RESULT eq \
{TH_ERROR: expected integer, got: "42.0"}}

###############################################################################

fossil test-th-eval "set var 1; info exists var"
test th1-info-exists-1 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set var 1; unset var; info exists var"
test th1-info-exists-2 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "set var 1; unset var; set var 2; info exists var"
test th1-info-exists-3 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set var 1; expr {\$var+0}"
test th1-info-exists-4 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set var 1; unset var; expr {\$var+0}"
test th1-info-exists-5 {$RESULT eq {TH_ERROR: no such variable: var}}

###############################################################################

fossil test-th-eval "catch {bad}; info exists var; set th_stack_trace"
test th1-info-exists-6 {$RESULT eq {bad}}

###############################################################################

fossil test-th-eval "set var(1) 1; info exists var"
test th1-info-exists-7 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set var(1) 1; unset var(1); info exists var"
test th1-info-exists-8 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set var(1) 1; unset var; info exists var"
test th1-info-exists-9 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "set var(1) 1; info exists var(1)"
test th1-info-exists-10 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set var(1) 1; unset var(1); info exists var(1)"
test th1-info-exists-11 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "set var(1) 1; unset var; info exists var(1)"
test th1-info-exists-12 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "set var 1; unset var"
test th1-unset-1 {$RESULT eq {var}}

###############################################################################

fossil test-th-eval "unset var"
test th1-unset-2 {$RESULT eq {TH_ERROR: no such variable: var}}

###############################################################################

fossil test-th-eval "set var 1; unset var; unset var"
test th1-unset-3 {$RESULT eq {TH_ERROR: no such variable: var}}

###############################################################################

fossil test-th-eval "set gv 1; proc p {} {upvar 1 gv lv; unset lv}; p; unset gv"
test th1-unset-4 {$RESULT eq {TH_ERROR: no such variable: gv}}

###############################################################################

fossil test-th-eval "set gv 1; upvar 0 gv gv2; info exists gv2"
test th1-unset-5 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "set gv 1; upvar 0 gv gv2; unset gv; unset gv2"
test th1-unset-6 {$RESULT eq {TH_ERROR: no such variable: gv2}}

###############################################################################

fossil test-th-eval "set gv 1; upvar 0 gv gv2(1); unset gv; unset gv2(1)"
test th1-unset-7 {$RESULT eq {TH_ERROR: no such variable: gv2(1)}}

###############################################################################

fossil test-th-eval "set gv(1) 1; upvar 0 gv(1) gv2; unset gv(1); unset gv2"
test th1-unset-8 {$RESULT eq {TH_ERROR: no such variable: gv2}}

###############################################################################

fossil test-th-eval "string first {} {}"
test th1-string-first-1 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string first {} {a}"
test th1-string-first-2 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string first {a} {}"
test th1-string-first-3 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string first {a} {a}"
test th1-string-first-4 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "string first {a} {aa}"
test th1-string-first-5 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "string first {aa} {a}"
test th1-string-first-6 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string first {ab} {abc}"
test th1-string-first-7 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "string first {bc} {abc}"
test th1-string-first-8 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "string first {AB} {abc}"
test th1-string-first-9 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string last {} {}"
test th1-string-last-1 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string last {} {a}"
test th1-string-last-2 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string last {a} {}"
test th1-string-last-3 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string last {a} {a}"
test th1-string-last-4 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "string last {a} {aa}"
test th1-string-last-5 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "string last {aa} {a}"
test th1-string-last-6 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "string last {ab} {abc}"
test th1-string-last-7 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "string last {bc} {abc}"
test th1-string-last-8 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "string last {AB} {abc}"
test th1-string-last-9 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr -2147483649.0"
test th1-expr-1 {$RESULT eq {-2147483649.0}}

###############################################################################

fossil test-th-eval "expr -2147483649"
test th1-expr-2 {$RESULT eq {2147483647}}

###############################################################################

fossil test-th-eval "expr -2147483648"
test th1-expr-3 {$RESULT eq {-2147483648}}

###############################################################################

fossil test-th-eval "expr -2147483647"
test th1-expr-4 {$RESULT eq {-2147483647}}

###############################################################################

fossil test-th-eval "expr -1"
test th1-expr-5 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr 0"
test th1-expr-6 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "expr 0.0"
test th1-expr-7 {$RESULT eq {0.0}}

###############################################################################

fossil test-th-eval "expr 1"
test th1-expr-8 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "expr 2147483647"
test th1-expr-9 {$RESULT eq {2147483647}}

###############################################################################

fossil test-th-eval "expr 2147483648"
test th1-expr-10 {$RESULT eq {2147483648}}

###############################################################################

fossil test-th-eval "expr 2147483649"
test th1-expr-11 {$RESULT eq {2147483649}}

###############################################################################

fossil test-th-eval "expr +2147483649"
test th1-expr-12 {$RESULT eq {-2147483647}}

###############################################################################

fossil test-th-eval "expr +2147483649.0"
test th1-expr-13 {$RESULT eq {2147483649.0}}

###############################################################################

fossil test-th-eval "expr ~(-1)"
test th1-expr-14 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "expr ~-1"
test th1-expr-15 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "expr ~0"
test th1-expr-16 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr ~+0"
test th1-expr-17 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr ~-0"
test th1-expr-18 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr ~(+0)"
test th1-expr-19 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr ~(-0)"
test th1-expr-20 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr ~1"
test th1-expr-21 {$RESULT eq {-2}}

###############################################################################

fossil test-th-eval "expr ~+1"
test th1-expr-22 {$RESULT eq {-2}}

###############################################################################

fossil test-th-eval "expr ~(+1)"
test th1-expr-23 {$RESULT eq {-2}}

###############################################################################

fossil test-th-eval "expr 0+0b11"
test th1-expr-24 {$RESULT eq 3}

###############################################################################

fossil test-th-eval "expr 0+0o15"
test th1-expr-25 {$RESULT eq 13}

###############################################################################

fossil test-th-eval "expr 0+0x15"
test th1-expr-26 {$RESULT eq 21}

###############################################################################

fossil test-th-eval "expr 0+0b2"
test th1-expr-27 {$RESULT eq {TH_ERROR: expected number, got: "0b2"}}

###############################################################################

fossil test-th-eval "expr 0+0o8"
test th1-expr-28 {$RESULT eq {TH_ERROR: expected number, got: "0o8"}}

###############################################################################

fossil test-th-eval "expr 0+0xg"
test th1-expr-29 {$RESULT eq {TH_ERROR: syntax error in expression: "0+0xg"}}

###############################################################################

fossil test-th-eval "expr 0+0b1."
test th1-expr-30 {$RESULT eq {TH_ERROR: syntax error in expression: "0+0b1."}}

###############################################################################

fossil test-th-eval "expr 0+0o1."
test th1-expr-31 {$RESULT eq {TH_ERROR: syntax error in expression: "0+0o1."}}

###############################################################################

fossil test-th-eval "expr 0+0x1."
test th1-expr-32 {$RESULT eq {TH_ERROR: syntax error in expression: "0+0x1."}}

###############################################################################

fossil test-th-eval "expr 0ne5"
test th1-expr-33 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "expr 0b1+5"
test th1-expr-34 {$RESULT eq {6}}

###############################################################################

fossil test-th-eval "expr 0+0b"
test th1-expr-35 {$RESULT eq {TH_ERROR: expected number, got: "0b"}}

###############################################################################

fossil test-th-eval "expr (-1)+1"
test th1-expr-36 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "expr (((-1)))"
test th1-expr-37 {$RESULT eq {-1}}

###############################################################################

fossil test-th-eval "expr (((1)))"
test th1-expr-38 {$RESULT eq {1}}

###############################################################################

fossil test-th-eval "expr (((1))"
test th1-expr-39 {$RESULT eq {TH_ERROR: syntax error in expression: "(((1))"}}

###############################################################################

fossil test-th-eval "expr ((1)))"
test th1-expr-40 {$RESULT eq {TH_ERROR: syntax error in expression: "((1)))"}}

###############################################################################

fossil test-th-eval "expr (((1)*2)*2)"
test th1-expr-41 {$RESULT eq {4}}

###############################################################################

fossil test-th-eval "expr +"
test th1-expr-42 {$RESULT eq {TH_ERROR: syntax error in expression: "+"}}

###############################################################################

fossil test-th-eval "expr -"
test th1-expr-43 {$RESULT eq {TH_ERROR: syntax error in expression: "-"}}

###############################################################################

fossil test-th-eval "expr ++"
test th1-expr-44 {$RESULT eq {TH_ERROR: syntax error in expression: "++"}}

###############################################################################

fossil test-th-eval "expr --"
test th1-expr-45 {$RESULT eq {TH_ERROR: syntax error in expression: "--"}}

###############################################################################

fossil test-th-eval "lindex list +"
test th1-expr-46 {$RESULT eq {TH_ERROR: expected integer, got: "+"}}

###############################################################################

fossil test-th-eval "lindex list -"
test th1-expr-47 {$RESULT eq {TH_ERROR: expected integer, got: "-"}}

###############################################################################

fossil test-th-eval "lindex list +0x"
test th1-expr-48 {$RESULT eq {TH_ERROR: expected integer, got: "+0x"}}

###############################################################################

fossil test-th-eval "lindex list -0x"
test th1-expr-49 {$RESULT eq {TH_ERROR: expected integer, got: "-0x"}}

###############################################################################

set skip_anycap 1
if {$::outside_fossil_repo} {
  puts "Skipping th1-anycap-*-1 perm tests: not in Fossil repo checkout."
} elseif ($::dirty_ckout) {
  puts "Skipping th1-anycap-*-1 perm tests: uncommitted changes in Fossil checkout."
} else {
  set skip_anycap 0
}

# NOTE: The 'd' permission is no longer used.
foreach perm [list \
    a b c e f g h i j k l m n o p q r s t u v w x y z \
    A D \
    2 3 4 5 6 7 ] {
  if {$perm eq "u"} continue; # NOTE: Skip "reader" meta-permission.
  if {$perm eq "v"} continue; # NOTE: Skip "developer" meta-permission.

  set ::env(TH1_TEST_USER_CAPS) sxy
  fossil test-th-eval "anycap $perm"
  test th1-anycap-no-$perm-1 {$RESULT eq {0}}

  fossil test-th-eval "hascap $perm"
  test th1-hascap-no-$perm-1 {$RESULT eq {0}}

  fossil test-th-eval "anoncap $perm"
  test th1-anoncap-no-$perm-1 {$RESULT eq {0}}

  if {$skip_anycap} { continue }

  run_in_checkout {
    set ::env(TH1_TEST_USER_CAPS) sxy
    fossil test-th-eval --set-user-caps "anycap $perm"
    test th1-anycap-yes-$perm-1 {$RESULT eq {1}}

    set ::env(TH1_TEST_USER_CAPS) 1; # NOTE: Bad permission.
    fossil test-th-eval --set-user-caps "anycap $perm"
    test th1-anycap-no-$perm-1 {$RESULT eq {0}}

    set ::env(TH1_TEST_USER_CAPS) sxy
    fossil test-th-eval --set-user-caps "hascap $perm"
    test th1-hascap-yes-$perm-1 {$RESULT eq {1}}

    set ::env(TH1_TEST_USER_CAPS) 1; # NOTE: Bad permission.
    fossil test-th-eval --set-user-caps "hascap $perm"
    test th1-hascap-no-$perm-1 {$RESULT eq {0}}
    unset ::env(TH1_TEST_USER_CAPS)

    set ::env(TH1_TEST_ANON_CAPS) sxy
    fossil test-th-eval --set-anon-caps "anoncap $perm"
    test th1-anoncap-yes-$perm-1 {$RESULT eq {1}}

    set ::env(TH1_TEST_ANON_CAPS) 1; # NOTE: Bad permission.
    fossil test-th-eval --set-anon-caps "anoncap $perm"
    test th1-anoncap-no-$perm-1 {$RESULT eq {0}}
    unset ::env(TH1_TEST_ANON_CAPS)
  }
}

###############################################################################

fossil test-th-eval "anycap oh"
test th1-anycap-no-multiple-1 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "hascap oh"
test th1-hascap-no-multiple-1 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "hascap o h"
test th1-hascap-no-multiple-2 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "anoncap oh"
test th1-anoncap-no-multiple-1 {$RESULT eq {0}}

###############################################################################

fossil test-th-eval "anoncap o h"
test th1-anoncap-no-multiple-2 {$RESULT eq {0}}

###############################################################################

test_block_in_checkout "test-anoncap-*" {
  fossil test-th-eval --set-user-caps "anycap oh"
  test th1-anycap-yes-multiple-1 {$RESULT eq {1}}

  set ::env(TH1_TEST_USER_CAPS) o
  fossil test-th-eval --set-user-caps "anycap oh"
  test th1-anycap-yes-multiple-2 {$RESULT eq {1}}
  unset ::env(TH1_TEST_USER_CAPS)

  fossil test-th-eval --set-user-caps "hascap oh"
  test th1-hascap-yes-multiple-1 {$RESULT eq {1}}

  set ::env(TH1_TEST_USER_CAPS) o
  fossil test-th-eval --set-user-caps "hascap oh"
  test th1-hascap-no-multiple-3 {$RESULT eq {0}}
  unset ::env(TH1_TEST_USER_CAPS)

  fossil test-th-eval --set-user-caps "hascap o h"
  test th1-hascap-yes-multiple-2 {$RESULT eq {1}}

  set ::env(TH1_TEST_USER_CAPS) o
  fossil test-th-eval --set-user-caps "hascap o h"
  test th1-hascap-no-multiple-4 {$RESULT eq {0}}
  unset ::env(TH1_TEST_USER_CAPS)

  fossil test-th-eval --set-anon-caps "anoncap oh"
  test th1-anoncap-yes-multiple-1 {$RESULT eq {1}}

  set ::env(TH1_TEST_ANON_CAPS) o
  fossil test-th-eval --set-anon-caps "anoncap oh"
  test th1-anoncap-no-multiple-3 {$RESULT eq {0}}
  unset ::env(TH1_TEST_ANON_CAPS)

  fossil test-th-eval --set-anon-caps "anoncap o h"
  test th1-anoncap-yes-multiple-2 {$RESULT eq {1}}

  set ::env(TH1_TEST_ANON_CAPS) o
  fossil test-th-eval --set-anon-caps "anoncap o h"
  test th1-anoncap-no-multiple-4 {$RESULT eq {0}}
  unset ::env(TH1_TEST_ANON_CAPS)
}

###############################################################################

test_in_checkout th1-checkout-1 {
  # NOTE: The "1" here forces the checkout to be opened.
  fossil test-th-eval "checkout 1"
} {[string length $RESULT] > 0}

###############################################################################

test_in_checkout th1-checkout-2 {
  if {$th1Hooks} {
    fossil test-th-eval "checkout"
  } else {
    # NOTE: No TH1 hooks, force checkout to be populated.
    fossil test-th-eval --open-config "checkout"
  }
} {[string length $RESULT] > 0}

###############################################################################

set savedPwd [pwd]; cd /
fossil test-th-eval "checkout 1"
cd $savedPwd; unset savedPwd
test th1-checkout-3 {[string length $RESULT] == 0}

###############################################################################

set savedPwd [pwd]; cd /
fossil test-th-eval "checkout"
cd $savedPwd; unset savedPwd
test th1-checkout-4 {[string length $RESULT] == 0}

###############################################################################

fossil test-th-eval "render {}"
test th1-render-1 {$RESULT eq {}}

###############################################################################

fossil test-th-eval "render {$<x> before <th1>set x 123</th1> after $<x> }"
test th1-render-2 {$RESULT eq {no such variable: x before  after 123 }}

###############################################################################

fossil test-th-eval "trace {}"
test th1-trace-1 {$RESULT eq {}}

###############################################################################

fossil test-th-eval --th-trace "trace {}" -expectError
set normalized_result [normalize_result]

regsub -- {\n/\*\*\*\*\* Subprocess \d+ exit\(\d+\) \*\*\*\*\*/} \
    $normalized_result {} normalized_result

if {$th1Hooks} {
  test th1-trace-2 {$normalized_result eq \
{------------------ BEGIN TRACE LOG ------------------
th1-init 0x0 => 0x0<br>

------------------- END TRACE LOG -------------------}}
} else {
  test th1-trace-2 {$normalized_result eq \
      {------------------ BEGIN TRACE LOG ------------------
th1-init 0x0 => 0x0<br>
th1-setup {} => TH_OK<br>

------------------- END TRACE LOG -------------------}}
}

###############################################################################

fossil test-th-eval "trace {this is a trace message.}"
test th1-trace-3 {$RESULT eq {}}

###############################################################################

fossil test-th-eval --th-trace "trace {this is a trace message.}" -expectError
set normalized_result [normalize_result]

regsub -- {\n/\*\*\*\*\* Subprocess \d+ exit\(\d+\) \*\*\*\*\*/} \
    $normalized_result {} normalized_result

if {$th1Hooks} {
  test th1-trace-4 {$normalized_result eq \
      {------------------ BEGIN TRACE LOG ------------------
th1-init 0x0 => 0x0<br>
this is a trace message.
------------------- END TRACE LOG -------------------}}
} else {
  test th1-trace-4 {$normalized_result eq \
      {------------------ BEGIN TRACE LOG ------------------
th1-init 0x0 => 0x0<br>
th1-setup {} => TH_OK<br>
this is a trace message.
------------------- END TRACE LOG -------------------}}
}

###############################################################################

fossil test-th-eval "defHeader {Page Title Here}"
test th1-defHeader-1 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "defHeader"}}

###############################################################################

fossil test-th-eval "defHeader"
test th1-defHeader-2 {[string match *<body> [normalize_result]] || \
    [string match "*<body class=\"\$current_feature\
                    rpage-\$requested_page\
                    cpage-\$canonical_page\">" [normalize_result]]}

###############################################################################

fossil test-th-eval "styleHeader {Page Title Here}"
test th1-header-1 {$RESULT eq {TH_ERROR: repository unavailable}}

###############################################################################

test_in_checkout th1-header-2 {
  fossil test-th-eval --open-config "styleHeader {Page Title Here}"
} {[regexp -- {<title>Fossil: Page Title Here</title>} $RESULT]}

###############################################################################

fossil test-th-eval "styleFooter"
test th1-footer-1 {$RESULT eq {TH_ERROR: repository unavailable}}

###############################################################################

fossil test-th-eval --open-config "styleFooter"
test th1-footer-2 {$RESULT eq {}}

###############################################################################

fossil test-th-eval --open-config --cgi "styleHeader {}; styleFooter"
test th1-footer-3 {[regexp -- {</body>\n</html>} $RESULT]}

###############################################################################

fossil test-th-eval "getParameter"
test th1-get-parameter-1 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "getParameter NAME ?DEFAULT?"}}

###############################################################################

fossil test-th-eval "getParameter test1"
test th1-get-parameter-2 {$RESULT eq {}}

###############################################################################

fossil test-th-eval "getParameter test1 defValue1"
test th1-get-parameter-3 {$RESULT eq {defValue1}}

###############################################################################

fossil test-th-eval "setParameter"
test th1-set-parameter-1 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "setParameter NAME VALUE"}}

###############################################################################

fossil test-th-eval "setParameter test1 value1; getParameter test1"
test th1-set-parameter-2 {$RESULT eq {value1}}

###############################################################################

fossil test-th-eval "setParameter test2 value2; getParameter test1"
test th1-set-parameter-3 {$RESULT eq {}}

###############################################################################

fossil test-th-eval "setParameter test3 value3; getParameter test3"
test th1-set-parameter-4 {$RESULT eq {value3}}

###############################################################################

fossil test-th-eval "setParameter test3 value3; getParameter test3 defValue3"
test th1-set-parameter-5 {$RESULT eq {value3}}

###############################################################################

fossil test-th-eval "setParameter test4 value4; setParameter test4 value5; getParameter test4"
test th1-set-parameter-6 {$RESULT eq {value5}}

###############################################################################

fossil test-th-eval "setParameter test4 value4; setParameter test4 value5; getParameter test4 defValue4"
test th1-set-parameter-7 {$RESULT eq {value5}}

###############################################################################

fossil test-th-eval "artifact"
test th1-artifact-1 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "artifact ID ?FILENAME?"}}

###############################################################################

fossil test-th-eval "artifact tip"
test th1-artifact-2 {$RESULT eq {TH_ERROR: repository unavailable}}

###############################################################################

test_in_checkout th1-artifact-3 {
  fossil test-th-eval --open-config "artifact tip"
} {[regexp -- {F test/th1\.test [0-9a-f]{40,64}} $RESULT]}

###############################################################################

fossil test-th-eval "artifact 0000000000"
test th1-artifact-4 {$RESULT eq {TH_ERROR: repository unavailable}}

###############################################################################

fossil test-th-eval --open-config "artifact 0000000000"
test th1-artifact-5 {$RESULT eq {TH_ERROR: name not found}}

###############################################################################

fossil test-th-eval "artifact tip test/th1.test"
test th1-artifact-6 {$RESULT eq {TH_ERROR: repository unavailable}}

###############################################################################

test_in_checkout th1-artifact-7 {
  fossil test-th-eval --open-config "artifact tip test/th1.test"
} {[regexp -- {th1-artifact-7} $RESULT]}

###############################################################################

fossil test-th-eval "artifact 0000000000 test/th1.test"
test th1-artifact-8 {$RESULT eq {TH_ERROR: repository unavailable}}

###############################################################################

fossil test-th-eval --open-config "artifact 0000000000 test/th1.test"
test th1-artifact-9 {$RESULT eq {TH_ERROR: manifest not found}}

###############################################################################

test_in_checkout th1-globalState-1 {
  if {$th1Hooks} {
    fossil test-th-eval "globalState checkout"
  } else {
    # NOTE: No TH1 hooks, force checkout to be populated.
    fossil test-th-eval --open-config "globalState checkout"
  }
} {[string length $RESULT] > 0}

###############################################################################

test_block_in_checkout th1-globalState-2 {
  if {$th1Hooks} {
    fossil test-th-eval "globalState checkout"
    test th1-globalState-2 {$RESULT eq [fossil test-th-eval checkout]}
  } else {
    # NOTE: No TH1 hooks, force checkout to be populated.
    fossil test-th-eval --open-config "globalState checkout"

    test th1-globalState-2 {$RESULT eq \
        [fossil test-th-eval --open-config checkout]}
  }
}

###############################################################################

fossil test-th-eval "globalState configuration"
test th1-globalState-3 {[string length $RESULT] == 0}

###############################################################################

fossil test-th-eval --open-config "globalState configuration"
test th1-globalState-4 {[string length $RESULT] > 0}

###############################################################################

fossil test-th-eval "globalState executable"
test th1-globalState-5 {[file rootname [file tail $RESULT]] eq "fossil"}

###############################################################################

fossil test-th-eval "globalState log"
test th1-globalState-6 {[string length $RESULT] == 0}

###############################################################################

fossil test-th-eval --errorlog foserrors.log "globalState log"
test th1-globalState-7 {$RESULT eq "foserrors.log"}

###############################################################################

test_in_checkout th1-globalState-8 {
  if {$th1Hooks} {
    fossil test-th-eval "globalState repository"
  } else {
    # NOTE: No TH1 hooks, force repository to be populated.
    fossil test-th-eval --open-config "globalState repository"
  }
} {[string length $RESULT] > 0}

###############################################################################

test_block_in_checkout th1-globalState-9 {
  if {$th1Hooks} {
    fossil test-th-eval "globalState repository"
    test th1-globalState-9 {$RESULT eq [fossil test-th-eval repository]}
  } else {
    # NOTE: No TH1 hooks, force repository to be populated.
    fossil test-th-eval --open-config "globalState repository"

    test th1-globalState-9 {$RESULT eq \
        [fossil test-th-eval --open-config repository]}
  }
}

###############################################################################

fossil test-th-eval "globalState top"
test th1-globalState-10 {[string length $RESULT] == 0}

###############################################################################

fossil test-th-eval "globalState user"
test th1-globalState-11 {[string length $RESULT] == 0}

###############################################################################

fossil test-th-eval --user fossil-th1-test "globalState user"
test th1-globalState-12 {$RESULT eq "fossil-th1-test"}

###############################################################################

fossil test-th-eval "globalState vfs"
test th1-globalState-13 {[string length $RESULT] == 0}

###############################################################################

fossil test-th-eval "globalState vfs"
test th1-globalState-14 {[string length $RESULT] == 0}

###############################################################################

if {$is_windows || $is_cygwin} {
  set altVfs win32-longpath
} else {
  set altVfs unix-dotfile
}

###############################################################################

fossil test-th-eval --vfs $altVfs "globalState vfs"
test th1-globalState-15 {$RESULT eq $altVfs}

###############################################################################

fossil test-th-eval "globalState flags"
test th1-globalState-16 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval "reinitialize; globalState configuration"
test th1-reinitialize-1 {$RESULT eq ""}

###############################################################################

fossil test-th-eval "reinitialize 1; globalState configuration"
test th1-reinitialize-2 {$RESULT ne ""}

###############################################################################

#
# NOTE: This test will fail if the command names are added to TH1, or
#       moved from Tcl builds to plain or the reverse. Sorting the
#       command lists eliminates a dependence on order.
#
fossil test-th-eval "info commands"
set sorted_result [lsort $RESULT]
protOut "Sorted: $sorted_result"
set base_commands {anoncap anycap array artifact break breakpoint \
      builtin_request_js capexpr captureTh1 catch cgiHeaderLine checkout \
      combobox continue copybtn date decorate defHeader dir enable_htmlify \
      enable_output encode64 error expr for foreach getParameter glob_match \
      globalState hascap hasfeature html htmlize http httpize if info \
      insertCsrf lappend lindex linecount list llength lsearch markdown nonce \
      proc puts query randhex redirect regexp reinitialize rename render \
      repository return searchable set setParameter setting stime string \
      styleFooter styleHeader styleScript submenu tclReady trace unset \
      unversioned uplevel upvar utime verifyCsrf verifyLogin wiki}
set tcl_commands {tclEval tclExpr tclInvoke tclIsSafe tclMakeSafe}
if {$th1Tcl} {
  test th1-info-commands-1 {$sorted_result eq [lsort "$base_commands $tcl_commands"]}
} else {
  test th1-info-commands-1 {$sorted_result eq [lsort "$base_commands"]}
}

###############################################################################

fossil test-th-eval "info vars"

if {$th1Hooks} {
  test th1-info-vars-1 {[lsort $RESULT] eq \
      [lsort "th_stack_trace cmd_flags tcl_platform cmd_name cmd_args"]}
} else {
  test th1-info-vars-1 {$RESULT eq "tcl_platform"}
}

###############################################################################

fossil test-th-eval "set x 1; info vars"

if {$th1Hooks} {
  test th1-info-vars-2 {[lsort $RESULT] eq \
      [lsort "x th_stack_trace cmd_flags tcl_platform cmd_name cmd_args"]}
} else {
  test th1-info-vars-2 {[lsort $RESULT] eq [lsort "x tcl_platform"]}
}

###############################################################################

fossil test-th-eval "set x 1; unset x; info vars"

if {$th1Hooks} {
  test th1-info-vars-3 {[lsort $RESULT] eq \
      [lsort "th_stack_trace cmd_flags tcl_platform cmd_name cmd_args"]}
} else {
  test th1-info-vars-3 {$RESULT eq "tcl_platform"}
}

###############################################################################

fossil test-th-eval "proc foo {} {set x 1; info vars}; foo"
test th1-info-vars-4 {$RESULT eq "x"}

###############################################################################

fossil test-th-eval "set y 1; proc foo {} {set x 1; uplevel 1 {info vars}}; foo"

if {$th1Hooks} {
  test th1-info-vars-5 {[lsort $RESULT] eq \
      [lsort "th_stack_trace y cmd_flags tcl_platform cmd_name cmd_args"]}
} else {
  test th1-info-vars-5 {[lsort $RESULT] eq [lsort "y tcl_platform"]}
}

###############################################################################

fossil test-th-eval "array exists foo"
test th1-array-exists-1 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval "set foo(x) 1; array exists foo"
test th1-array-exists-2 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval "set foo(x) 1; unset foo(x); array exists foo"
test th1-array-exists-3 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval "set foo(x) 1; unset foo; array exists foo"
test th1-array-exists-4 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval "set foo 1; array exists foo"
test th1-array-exists-5 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval "array names foo"
test th1-array-names-1 {$RESULT eq ""}

###############################################################################

fossil test-th-eval "set foo 2; array names foo"
test th1-array-names-2 {$RESULT eq ""}

###############################################################################

fossil test-th-eval "set foo 2; unset foo; set foo(x) 2; array names foo"
test th1-array-names-3 {$RESULT eq "x"}

###############################################################################

fossil test-th-eval "set foo(x) 2; array names foo"
test th1-array-names-4 {$RESULT eq "x"}

###############################################################################

fossil test-th-eval "set foo(x) 2; set foo(y) 2; array names foo"
test th1-array-names-5 {$RESULT eq "x y"}

###############################################################################

fossil test-th-eval "set foo(x) 2; unset foo(x); array names foo"
test th1-array-names-6 {$RESULT eq ""}

###############################################################################

fossil test-th-eval "lsearch"
test th1-lsearch-1 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "lsearch list string"}}

###############################################################################

fossil test-th-eval "lsearch a"
test th1-lsearch-2 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "lsearch list string"}}

###############################################################################

fossil test-th-eval "lsearch a a a"
test th1-lsearch-3 {$RESULT eq \
    {TH_ERROR: wrong # args: should be "lsearch list string"}}

###############################################################################

fossil test-th-eval "lsearch {a b c} a"
test th1-lsearch-4 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval "lsearch {a b c} b"
test th1-lsearch-5 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval "lsearch {a b c} c"
test th1-lsearch-6 {$RESULT eq "2"}

###############################################################################

fossil test-th-eval "lsearch {a b c} d"
test th1-lsearch-7 {$RESULT eq "-1"}

###############################################################################

fossil test-th-eval "lsearch {a b c} aa"
test th1-lsearch-8 {$RESULT eq "-1"}

###############################################################################

fossil test-th-eval "lsearch {aa b c} a"
test th1-lsearch-9 {$RESULT eq "-1"}

###############################################################################

fossil test-th-eval "lsearch \"\{aa b c\" a"
test th1-lsearch-10 {$RESULT eq "TH_ERROR: Expected list, got: \"\{aa b c\""}

###############################################################################

fossil test-th-eval "glob_match"
test th1-glob-match-1 {$RESULT eq \
{TH_ERROR: wrong # args: should be "glob_match ?-one? ?--? patternList string"}}

###############################################################################

fossil test-th-eval "glob_match -one"
test th1-glob-match-2 {$RESULT eq \
{TH_ERROR: wrong # args: should be "glob_match ?-one? ?--? patternList string"}}

###############################################################################

fossil test-th-eval "glob_match --"
test th1-glob-match-3 {$RESULT eq \
{TH_ERROR: wrong # args: should be "glob_match ?-one? ?--? patternList string"}}

###############################################################################

fossil test-th-eval "glob_match -one --"
test th1-glob-match-4 {$RESULT eq \
{TH_ERROR: wrong # args: should be "glob_match ?-one? ?--? patternList string"}}

###############################################################################

fossil test-th-eval "glob_match -one -- 1"
test th1-glob-match-5 {$RESULT eq \
{TH_ERROR: wrong # args: should be "glob_match ?-one? ?--? patternList string"}}

###############################################################################

fossil test-th-eval "glob_match -one -- 1 2 3"
test th1-glob-match-6 {$RESULT eq \
{TH_ERROR: wrong # args: should be "glob_match ?-one? ?--? patternList string"}}

###############################################################################

fossil test-th-eval {list [glob_match a A] [glob_match A a]}
test th1-glob-match-7 {$RESULT eq "0 0"}

###############################################################################

fossil test-th-eval {list [glob_match a,b a] [glob_match a,b b]}
test th1-glob-match-8 {$RESULT eq "1 2"}

###############################################################################

fossil test-th-eval {list [glob_match -one a,b a] [glob_match -one a,b b]}
test th1-glob-match-9 {$RESULT eq "0 0"}

###############################################################################

fossil test-th-eval {list [glob_match -one a,b a,b] [glob_match -one a b,a]}
test th1-glob-match-10 {$RESULT eq "1 0"}

###############################################################################

fossil test-th-eval {list [glob_match a*c abc] [glob_match abc a*c]}
test th1-glob-match-11 {$RESULT eq "1 0"}

###############################################################################

fossil test-th-eval {list [glob_match a?c abc] [glob_match abc a?c]}
test th1-glob-match-12 {$RESULT eq "1 0"}

###############################################################################

fossil test-th-eval {list [glob_match {a[bd]c} abc] [glob_match abc {a[bd]c}]}
test th1-glob-match-13 {$RESULT eq "1 0"}

###############################################################################

fossil test-th-eval {string is}
test th1-string-is-1 {$RESULT eq \
{TH_ERROR: wrong # args: should be "string is class string"}}

###############################################################################

fossil test-th-eval {string is something}
test th1-string-is-2 {$RESULT eq \
{TH_ERROR: wrong # args: should be "string is class string"}}

###############################################################################

fossil test-th-eval {string is not something else}
test th1-string-is-3 {$RESULT eq \
{TH_ERROR: wrong # args: should be "string is class string"}}

###############################################################################

fossil test-th-eval {string is other 123}
test th1-string-is-4 {$RESULT eq \
"TH_ERROR: Expected alnum, double, integer, or list, got: other"}

###############################################################################

fossil test-th-eval {string is alnum 123}
test th1-string-is-5 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is alnum abc}
test th1-string-is-6 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is alnum 123abc}
test th1-string-is-7 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is alnum abc123}
test th1-string-is-8 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is alnum _abc123}
test th1-string-is-9 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is alnum abc.123}
test th1-string-is-10 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is alnum abc123_}
test th1-string-is-11 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is list ""}
test th1-string-is-12 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is list 1}
test th1-string-is-13 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is list "1 2 3"}
test th1-string-is-14 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is list "\{"}
test th1-string-is-15 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is list "1 2 3 \{"}
test th1-string-is-16 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is list "1 2 3 \{\}"}
test th1-string-is-17 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is list "1 2 3 \{\{\}"}
test th1-string-is-18 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is double 123}
test th1-string-is-19 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is double 123.456}
test th1-string-is-20 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is double 123abc}
test th1-string-is-21 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is double 123_456}
test th1-string-is-22 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is integer 123}
test th1-string-is-23 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is integer 123.456}
test th1-string-is-24 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is integer 123abc}
test th1-string-is-25 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is integer 0b11001001}
test th1-string-is-26 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is integer 0b11001002}
test th1-string-is-27 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is integer 0o777}
test th1-string-is-28 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is integer 0o778}
test th1-string-is-29 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string is integer 0xC0DEF00D}
test th1-string-is-30 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {string is integer 0xC0DEF00Z}
test th1-string-is-31 {$RESULT eq "0"}

###############################################################################

fossil test-th-eval {string index "" -1}
test th1-string-index-1 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index "" 0}
test th1-string-index-2 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index "" 1}
test th1-string-index-3 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index "" 2}
test th1-string-index-4 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index "" end}
test th1-string-index-5 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index A -1}
test th1-string-index-6 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index A 0}
test th1-string-index-7 {$RESULT eq "A"}

###############################################################################

fossil test-th-eval {string index A 1}
test th1-string-index-8 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index A 2}
test th1-string-index-9 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index A end}
test th1-string-index-10 {$RESULT eq "A"}

###############################################################################

fossil test-th-eval {string index ABC -1}
test th1-string-index-11 {$RESULT eq ""}

###############################################################################

fossil test-th-eval {string index ABC 0}
test th1-string-index-12 {$RESULT eq "A"}

###############################################################################

fossil test-th-eval {string index ABC 1}
test th1-string-index-13 {$RESULT eq "B"}

###############################################################################

fossil test-th-eval {string index ABC 2}
test th1-string-index-14 {$RESULT eq "C"}

###############################################################################

fossil test-th-eval {string index ABC end}
test th1-string-index-15 {$RESULT eq "C"}

###############################################################################

fossil test-th-eval {markdown}
test th1-markdown-1 {$RESULT eq \
{TH_ERROR: wrong # args: should be "markdown STRING"}}

###############################################################################

fossil test-th-eval {markdown one two}
test th1-markdown-2 {$RESULT eq \
{TH_ERROR: wrong # args: should be "markdown STRING"}}

###############################################################################

fossil test-th-eval {markdown "*This is a test.*"}
test th1-markdown-3 {[normalize_result] eq {{} {<div class="markdown">

<p><em>This is a test.</em></p>

</div>
}}}

###############################################################################

fossil test-th-eval {markdown "Test1\n=====\n*This is a test.*"}
test th1-markdown-4 {[normalize_result] eq {Test1 {<div class="markdown">

<p><em>This is a test.</em></p>

</div>
}}}

###############################################################################

set markdown [read_file [file join $path markdown-test1.md]]
fossil test-th-eval [string map \
    [list %markdown% $markdown] {markdown {%markdown%}}]
test th1-markdown-5 {[normalize_result] eq \
{{Markdown Formatter Test Document} {<div class="markdown">

<p>This document is designed to test the markdown formatter.</p>

<ul>
<li>A bullet item.

<ul>
<li>A subitem</li>
</ul></li>
<li>Second bullet</li>
</ul>

<p>More text</p>

<ol>
<li>Enumeration
1.1.  Subitem 1
1.2.  Subitem 2</li>
<li>Second enumeration.</li>
</ol>

<p>Another paragraph.</p>

<h2>Other Features</h2>
<p>Text can show <em>emphasis</em> or <em>emphasis</em> or <strong>strong emphassis</strong>.</p>

</div>
}}}

###############################################################################

# Verify that quoted delimiters like * and _ don't terminate their
# span. This was fixed by checkin [dd41f85acf].
fossil test-th-eval {markdown "*This is\\*a test.*\n_second\\_test_"}
test th1-markdown-6 {[normalize_result] eq {{} {<div class="markdown">

<p><em>This is*a test.</em>
<em>second_test</em></p>

</div>
}}}

###############################################################################

fossil test-th-eval {encode64 test}
test th1-encode64-1 {$RESULT eq "dGVzdA=="}

###############################################################################

fossil test-th-eval {encode64 test\x00}
test th1-encode64-2 {$RESULT eq "dGVzdAA="}

###############################################################################

#
# This test will fail if the Fossil source file named below changes.  Update
# the expected result string below if that happens.
#
test_in_checkout th1-encode64-3 {
  fossil test-th-eval --open-config \
      {encode64 [artifact trunk ajax/cgi-bin/fossil-json.cgi.example]}
} {
  $RESULT eq "IyEvcGF0aC90by9mb3NzaWwvYmluYXJ5CnJlcG9zaXRvcnk6IC9wYXRoL3RvL3JlcG8uZnNsCg=="
}

###############################################################################

fossil test-th-eval {array exists tcl_platform}
test th1-platform-1 {$RESULT eq "1"}

###############################################################################

fossil test-th-eval {array names tcl_platform}
test th1-platform-2 {$RESULT eq "engine platform"}

###############################################################################

fossil test-th-eval {set tcl_platform(engine)}
test th1-platform-3 {$RESULT eq "TH1"}

###############################################################################

fossil test-th-eval {set tcl_platform(platform)}
test th1-platform-4 {$RESULT eq "windows" || $RESULT eq "unix"}

###############################################################################

set th1FileName [file join $::tempPath th1-[pid].th1]

write_file $th1FileName {
  set x ""
  for {set i 0} {$i < 10} {set i [expr {$i + 1}]} {
    set x "$x $i"
  }
  return [string trim $x]
  set y; # NOTE: Never hit.
}

fossil test-th-source $th1FileName
test th1-source-1 {$RESULT eq {TH_RETURN: 0 1 2 3 4 5 6 7 8 9}}
file delete $th1FileName

###############################################################################

# Tests for the TH1 unversioned command require at least one
# unversioned file in the repository. All tests run in a freshly
# created checkout of a freshly created repo, so we can just
# create a file or two for the purpose.
write_file ten.txt "0123456789"
fossil unversioned add ten.txt
fossil unversioned list

# unversioned list
fossil test-th-eval --open-config "unversioned list"
test th1-unversioned-1 {[normalize_result] eq {ten.txt}}

# unversioned content
fossil test-th-eval --open-config \
      {string length [unversioned content ten.txt]}
test th1-unversioned-2 {$RESULT eq {10}}


###############################################################################

test_cleanup
Added test/unversioned.test.






























































































































































































































































































































































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# The "unversioned" command.
#

set path [file dirname [info script]]

if {[catch {package require sha1}] != 0} {
  puts "The \"sha1\" package is not available."
  test_cleanup_then_return
}

require_no_open_checkout

test_setup; set rootDir [file normalize [pwd]]

# Avoid delays from the backoffice.
fossil set backoffice-disable 1

fossil test-th-eval --open-config {repository}
set repository [normalize_result]

if {[string length $repository] == 0} {
  puts "Detection of the open repository file failed."
  test_cleanup_then_return
}

write_file unversioned1.txt "This is unversioned file #1."
write_file unversioned2.txt " This is unversioned file #2. "
write_file "unversioned space.txt" "\nThis is unversioned file #3.\n"
write_file unversioned4.txt "This is unversioned file #4."
write_file unversioned5.txt "This is unversioned file #5."

set env(VISUAL) [appendArgs \
    [info nameofexecutable] " " [file join $path fake-editor.tcl]]

###############################################################################

# Under cygwin, the printed name with Usage: strips the extension
if { $::is_cygwin && [file extension $fossilexe] eq ".exe" } {
  set fossilexeref [string range $fossilexe 0 end-4]
} else {
  set fossilexeref $fossilexe
}

fossil unversioned -expectError
test unversioned-1 {[normalize_result] eq \
[string map [list %fossil% [file nativename $fossilexeref]] {Usage: %fossil%\
unversioned add|cat|edit|export|list|revert|remove|sync|touch}]}

###############################################################################

fossil unversioned list
test unversioned-2 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat not-found.txt
test unversioned-3 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat unversioned1.txt
test unversioned-4 {[normalize_result] eq {}}

###############################################################################

fossil unversioned add unversioned1.txt
test unversioned-5 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat unversioned1.txt
test unversioned-6 {[normalize_result] eq {This is unversioned file #1.}}

###############################################################################

fossil unversioned list
test unversioned-7 {[regexp \
{^[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       28       28\
unversioned1\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned ls
test unversioned-8 {[normalize_result] eq {unversioned1.txt}}

###############################################################################

fossil unversioned remove unversioned1.txt
test unversioned-9 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list
test unversioned-10 {[normalize_result] eq {}}

###############################################################################

fossil unversioned ls
test unversioned-11 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list --all
test unversioned-12 {[regexp \
{^\(deleted\) \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}        0        0\
unversioned1\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned ls --all
test unversioned-13 {[normalize_result] eq {unversioned1.txt}}

###############################################################################

fossil unversioned add "unversioned space.txt" -expectError
test unversioned-14 {[normalize_result] eq \
{unversioned filenames may not contain whitespace: 'unversioned space.txt'}}

###############################################################################

fossil unversioned add "unversioned space.txt" --as unversioned3.txt
test unversioned-15 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list
test unversioned-16 {[regexp \
{^[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       30       30\
unversioned3\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned ls --l
test unversioned-17 {[regexp \
{^[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       30       30\
unversioned3\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned ls
test unversioned-18 {[normalize_result] eq {unversioned3.txt}}

###############################################################################

fossil unversioned add unversioned2.txt --mtime 2016-10-01
test unversioned-19 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list
test unversioned-20 {[regexp \
{^[0-9a-f]{12} 2016-10-01 00:00:00       30       30\
unversioned2\.txt
[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       30       30\
unversioned3\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned ls
test unversioned-21 {[normalize_result] eq {unversioned2.txt
unversioned3.txt}}

###############################################################################

fossil unversioned cat unversioned1.txt
test unversioned-22 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat unversioned2.txt
test unversioned-23 {[::sha1::sha1 $RESULT] eq \
{962f96ebd613e4fdd9aa2d20bd9fe21a64e925f2}}

###############################################################################

fossil unversioned cat unversioned3.txt -keepNewline
test unversioned-24 {[::sha1::sha1 $RESULT] eq \
{c6b95509120d9703cc4fbe5cdfcb435b5912b3e4}}

###############################################################################

fossil unversioned rm unversioned3.txt
test unversioned-25 {[normalize_result] eq {}}

###############################################################################

fossil unversioned add unversioned4.txt
test unversioned-26 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat unversioned4.txt
set hash(before) [::sha1::sha1 $RESULT]
test unversioned-27 {$hash(before) eq \
{b48ba8e2d0b498321dfd13de84867effda399af5}}

###############################################################################

fossil unversioned edit unversioned4.txt
test unversioned-28 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat unversioned4.txt
set hash(after) [::sha1::sha1 $RESULT]
test unversioned-29 {$hash(after) ne $hash(before)}
test unversioned-30 {[regexp { \d+ (?:-)?\d+$} $RESULT]}

###############################################################################

fossil unversioned edit unversioned4.txt --mtime 2016-10-01
test unversioned-31 {[normalize_result] eq {}}

###############################################################################

fossil unversioned cat unversioned4.txt
test unversioned-32 {[regexp { \d+ (?:-)?\d+ \d+ (?:-)?\d+$} $RESULT]}

###############################################################################

fossil unversioned list
test unversioned-33 {[regexp \
{^[0-9a-f]{12} 2016-10-01 00:00:00       30       30\
unversioned2\.txt
[0-9a-f]{12} 2016-10-01 00:00:00       \d+       \d+\
unversioned4\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned export unversioned2.txt unversioned2-ex.txt
test unversioned-34 {[normalize_result] eq {}}
test unversioned-35 {[::sha1::sha1 -hex -filename unversioned2-ex.txt] eq \
{962f96ebd613e4fdd9aa2d20bd9fe21a64e925f2}}

###############################################################################

fossil unversioned hash
test unversioned-36 {[regexp {^[0-9a-f]{40,64}$} [normalize_result]]}

###############################################################################

fossil unversioned hash --debug
test unversioned-37 {[regexp \
{^unversioned2\.txt 2016-10-01 00:00:00 [0-9a-f]{40,64}
unversioned4\.txt 2016-10-01 00:00:00 [0-9a-f]{40,64}
[0-9a-f]{40,64}$} [normalize_result]]}

###############################################################################

fossil unversioned remove unversioned4.txt --mtime "2016-10-02 13:47:29"
test unversioned-38 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list --all
test unversioned-39 {[regexp \
{^\(deleted\) \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}        0        0\
unversioned1\.txt
[0-9a-f]{12} 2016-10-01 00:00:00       30       30 unversioned2\.txt
   \(deleted\) \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}        0        0\
unversioned3\.txt
   \(deleted\) 2016-10-02 13:47:29        0        0 unversioned4\.txt$} \
[normalize_result]]}

###############################################################################

fossil unversioned touch unversioned1.txt --mtime "2016-10-03 23:01:44"
test unversioned-40 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list --all
test unversioned-41 {[regexp \
{^\(deleted\) 2016-10-03 23:01:44        0        0\
unversioned1\.txt
[0-9a-f]{12} 2016-10-01 00:00:00       30       30 unversioned2\.txt
   \(deleted\) \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}        0        0\
unversioned3\.txt
   \(deleted\) 2016-10-02 13:47:29        0        0 unversioned4\.txt$} \
[normalize_result]]}

###############################################################################

fossil unversioned add unversioned5.txt
test unversioned-42 {[normalize_result] eq {}}

###############################################################################

fossil unversioned touch unversioned5.txt
test unversioned-43 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list
test unversioned-44 {[regexp \
{^[0-9a-f]{12} 2016-10-01 00:00:00       30       30 unversioned2\.txt
[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       28       28\
unversioned5\.txt$} [normalize_result]]}

###############################################################################

set password [string trim [clock seconds] -]

fossil user new uvtester "Unversioned Test User" $password
fossil user capabilities uvtester oy

###############################################################################

foreach {pid port outTmpFile} [test_start_server $repository stopArg] {}
if {! $::QUIET} {
  puts [appendArgs "Started Fossil server, pid \"" $pid \" ", port \"" $port \".]
}
set remote [appendArgs http://uvtester: $password @localhost: $port /]

###############################################################################

set clientDir [file join $tempPath [appendArgs \
    uvtest_ [string trim [clock seconds] -] _ [getSeqNo]]]

set savedPwd [pwd]
file mkdir $clientDir; cd $clientDir
if {! $::QUIET} {
  puts [appendArgs "Now in client directory \"" [pwd] \".]
}
write_file unversioned-client1.txt "This is unversioned client file #1."

###############################################################################

fossil clone --save-http-password $remote uvrepo.fossil
fossil open -f uvrepo.fossil

###############################################################################

fossil unversioned list
test unversioned-45 {[normalize_result] eq {}}

###############################################################################

fossil_maybe_answer y unversioned sync $remote
test unversioned-46 {[regexp \
{Round-trips: 1   Artifacts sent: 0  received: 0
Round-trips: 1   Artifacts sent: 0  received: 0
Round-trips: 2   Artifacts sent: 0  received: 0
Round-trips: 2   Artifacts sent: 0  received: 2
\n? done, wire bytes sent: \d+  received: \d+  remote: (?:127\.0\.0\.1|::1)} \
[normalize_result]]}

###############################################################################

fossil unversioned ls
test unversioned-47 {[normalize_result] eq {unversioned2.txt
unversioned5.txt}}

###############################################################################

set env(FAKE_EDITOR_SCRIPT) "append data this_is_a_test"; # deterministic

fossil unversioned edit unversioned2.txt
test unversioned-48 {[normalize_result] eq {}}

unset env(FAKE_EDITOR_SCRIPT)

###############################################################################

fossil unversioned cat unversioned2.txt
test unversioned-49 {[::sha1::sha1 $RESULT] eq \
{e15d4b576fc04e3bb5e44a33d44d104dd5b19428}}

###############################################################################

fossil unversioned remove unversioned5.txt
test unversioned-50 {[normalize_result] eq {}}

###############################################################################

fossil unversioned list --all
test unversioned-51 {[regexp \
{^[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       44       44\
unversioned2\.txt
   \(deleted\) \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}        0        0\
unversioned5\.txt$} [normalize_result]]}

###############################################################################

fossil_maybe_answer y unversioned revert $remote
test unversioned-52 {[regexp \
{Round-trips: 1   Artifacts sent: 0  received: 0
Round-trips: 1   Artifacts sent: 0  received: 0
Round-trips: 2   Artifacts sent: 0  received: 0
Round-trips: 2   Artifacts sent: 0  received: 2
\n? done, wire bytes sent: \d+  received: \d+  remote: (?:127\.0\.0\.1|::1)} \
[normalize_result]]}

###############################################################################

fossil unversioned list
test unversioned-53 {[regexp \
{^[0-9a-f]{12} 2016-10-01 00:00:00       30       30\
unversioned2\.txt
[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       28       28\
unversioned5\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned add unversioned-client1.txt
test unversioned-54 {[normalize_result] eq {}}

###############################################################################

fossil_maybe_answer y unversioned sync $remote
test unversioned-55 {[regexp \
{Round-trips: 1   Artifacts sent: 0  received: 0
Round-trips: 1   Artifacts sent: 0  received: 0
Round-trips: 2   Artifacts sent: 1  received: 0
Round-trips: 2   Artifacts sent: 1  received: 0
\n? done, wire bytes sent: \d+  received: \d+  remote: (?:127\.0\.0\.1|::1)} \
[normalize_result]]}

###############################################################################

fossil close
test unversioned-56 {[normalize_result] eq {}}

###############################################################################

cd $savedPwd; unset savedPwd
file delete -force $clientDir
if {! $::QUIET} {
  puts [appendArgs "Now in server directory \"" [pwd] \".]
}

###############################################################################

set stopped [test_stop_server $stopArg $pid $outTmpFile]

if {! $::QUIET} {
  puts [appendArgs \
    [expr {$stopped ? "Stopped" : "Could not stop"}] \
    " Fossil server, pid \"" $pid "\", using argument \"" \
    $stopArg \".]
}

###############################################################################

fossil unversioned list
test unversioned-57 {[regexp \
{^[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       35       35\
unversioned-client1\.txt
[0-9a-f]{12} 2016-10-01 00:00:00       30       30 unversioned2\.txt
[0-9a-f]{12} \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}       28       28\
unversioned5\.txt$} [normalize_result]]}

###############################################################################

fossil unversioned cat unversioned-client1.txt
test unversioned-58 {[::sha1::sha1 $RESULT] eq \
{a34606f714afe309bb531fba6051eaf25201e8a2}}

###############################################################################

test_cleanup
Added test/update-test-1.sh.












































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#!/bin/sh
#
# Run this script in an empty directory.  A single argument is the full
# pathname of the fossil binary.  Example:
#
#     sh update-test-1.sh /home/drh/fossil/m1/fossil
#
export FOSSIL=$1
rm -rf aaa bbb update-test-1.fossil

# Create a test repository
$FOSSIL new update-test-1.fossil

# In checkout aaa, add file one.txt
mkdir aaa
cd aaa
$FOSSIL open ../update-test-1.fossil
echo one >one.txt
$FOSSIL add one.txt
$FOSSIL commit -m add-one --tag add-one

# Open checkout bbb.
mkdir ../bbb
cd ../bbb
$FOSSIL open ../update-test-1.fossil

# Back in aaa, add file two.txt
cd ../aaa
echo two >two.txt
$FOSSIL add two.txt
$FOSSIL commit -m add-two --tag add-two

# In bbb, delete file one.txt.  Then update the change from aaa that
# adds file two.  Verify that one.txt says deleted.
cd ../bbb
$FOSSIL rm one.txt
$FOSSIL changes
echo '========================================================================'
$FOSSIL update
echo '======== The previous should show "ADD two.txt" ========================'
$FOSSIL changes
echo '======== The previous should show "DELETE one.txt" ====================='
$FOSSIL commit --test -m check-in
echo '======== Only file two.txt is checked in ==============================='
Added test/update-test-2.sh.












































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#!/bin/sh
#
# Run this script in an empty directory.  A single argument is the full
# pathname of the fossil binary.  Example:
#
#     sh update-test-2.sh /home/drh/fossil/m1/fossil
#
export FOSSIL=$1
rm -rf aaa bbb update-test-2.fossil

# Create a test repository
$FOSSIL new update-test-2.fossil

# In checkout aaa, add file one.txt.
mkdir aaa
cd aaa
$FOSSIL open ../update-test-2.fossil
echo one >one.txt
$FOSSIL add one.txt
$FOSSIL commit -m add-one --tag add-one

# Create checkout bbb.
mkdir ../bbb
cd ../bbb
$FOSSIL open ../update-test-2.fossil

# Back in aaa, make changes to one.txt.  Add file two.txt.
cd ../aaa
echo change >>one.txt
echo two >two.txt
$FOSSIL add two.txt
$FOSSIL commit -m 'chng one and add two' --tag add-two

# In bbb, remove one.txt, then update.
cd ../bbb
$FOSSIL rm one.txt
$FOSSIL changes
echo '========================================================================'
$FOSSIL update
echo '======== Previous should show "ADD two.txt" and conflict on one.txt ===='
$FOSSIL changes
echo '======== The previous should show "DELETE one.txt" ====================='
$FOSSIL commit --test -m 'check-in'
echo '======== Only file two.txt is checked in ==============================='
Added test/update.test.























































































































































































































































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#
# Copyright (c) 2024 Preben Guldnerg <preben@guldberg.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests for the "update" command.
#

# Track number of tests we have set up in test_update_setup. This helps ensure
# that generated files are ordered in `fossil update --verbose` mode.
set UPDATE_TEST 0

proc test_update_setup {desc} {
    global UPDATE_TEST
    incr UPDATE_TEST
    fossil revert
    fossil update
    return [format "test-%02u-%s.txt" $UPDATE_TEST $desc]
}

# The output is in file name order, so massage $RESULT to remove initial UNCHANGED
# files. Only do this if we have the expected branch information.
proc test_update {testname message changes {fossil_args ""}} {
    fossil update --verbose {*}$fossil_args
    if { [regsub {\n-{79}\nupdated-from: [0-9a-z]{40} .*} $::RESULT {} test_result ] } {
        regsub {^(?:UNCHANGED [-a-z0-9.]+\n)*} $test_result {} test_result
    } else {
        set test_result $::RESULT
    }
    test "update-message-$testname" {$message == $test_result}
    fossil changes
    test "update-changes-$testname" {$changes == $::RESULT}
}

# Use a sequence number for file content that is not important for the test.
set UPDATE_SEQ_NO 0
proc write_seq_to_file {fname} {
    global UPDATE_SEQ_NO
    incr UPDATE_SEQ_NO
    write_file $fname "$UPDATE_SEQ_NO\n"
}

# Make sure we are not in an open repository and initialize new repository
test_setup

###############################################################################

fossil update --verbose
test update-already-up-to-date {
  [regexp {^-{79}\ncheckout: .*\nchanges: +None. Already up-to-date$} $RESULT]
}

# Remaining tests are carried out in the order update_cmd() performs checks.
#
# Common approach for tests below:
# 1. Set the testname
# 2. Set the file name, done by calling update_setup
# 3. Set message and changes, the expected message message and subsequent changes
# 3. Optionally set up and commit a common base for the next steps
# 4. Commit a change to the repository (new tip)
# 5. Update to the previous version
# 6. Make changes
# 7. Call test_update to attempt and update to tip


set testname "conflict-standard"
set fname [test_update_setup $testname]
set message "CONFLICT $fname"
set changes "EDITED     $fname"
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
fossil up previous
write_seq_to_file $fname
fossil add $fname
test_update $testname $message $changes -expectError

set testname "add-overwrites"
set fname [test_update_setup $testname]
set message "ADD $fname - overwrites an unmanaged file, original copy backed up locally"
set changes ""
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
fossil up previous
write_seq_to_file $fname
test_update $testname $message $changes -expectError

set testname "add-standard"
set fname [test_update_setup $testname]
set message "ADD $fname"
set changes ""
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
fossil up previous
test_update $testname $message $changes

set testname "update-change"
set fname [test_update_setup $testname]
set message "UPDATE $fname - change to unmanaged file"
set changes "DELETED    $fname"
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
write_seq_to_file $fname
fossil commit -m "Update $fname"
fossil up previous
fossil rm --hard $fname
test_update $testname $message $changes

set testname "update-standard"
set fname [test_update_setup $testname]
set message "UPDATE $fname"
set changes ""
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
write_seq_to_file $fname
fossil commit -m "Update $testname"
fossil up previous
test_update $testname $message $changes

set testname "update-missing"
set fname [test_update_setup $testname]
set message "UPDATE $fname"
set changes ""
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
write_seq_to_file $fname
fossil commit -m "Update $fname"
fossil up previous
file delete $fname
test_update $testname $message $changes

set testname "conflict-deleted"
set fname [test_update_setup $testname]
set message "CONFLICT $fname - edited locally but deleted by update"
set changes ""
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
fossil rm --hard $fname
fossil commit -m "Remove $fname"
fossil up previous
file delete $fname
test_update $testname $message $changes -expectError

set testname "remove"
set fname [test_update_setup $testname]
set message "REMOVE $fname"
set changes ""
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
fossil rm --hard $fname
fossil commit -m "Remove $fname"
fossil up previous
test_update $testname $message $changes

set testname "merge-renamed"
set fname [test_update_setup $testname]
set message "MERGE $fname -> $fname.renamed"
set changes "EDITED     $fname.renamed"
write_file $fname "center\n"
fossil add $fname
fossil commit -m "Add $fname"
write_file $fname "top\ncenter\n"
fossil mv --hard $fname "$fname.renamed"
fossil commit -m "Update and rename $fname"
fossil up previous
write_file $fname "center\nbelow\n"
test_update $testname $message $changes

set testname "merge-standard"
set fname [test_update_setup $testname]
set message "MERGE $fname"
set changes "EDITED     $fname"
write_file $fname "center\n"
fossil add $fname
fossil commit -m "Add $fname"
write_file $fname "top\ncenter\n"
fossil commit -m "Update $fname"
fossil up previous
write_file $fname "center\nbelow\n"
test_update $testname $message $changes

# TODO: test for "Cannot merge symlink" would be platform dependent

set testname "merge-conflict"
set fname [test_update_setup $testname]
set message "MERGE $fname\n***** 1 merge conflicts in $fname"
set changes "CONFLICT   $fname"
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
write_seq_to_file $fname
fossil commit -m "Update $fname"
fossil up previous
write_seq_to_file $fname
test_update $testname $message $changes -expectError

# TODO: test for "Cannot merge binary file"?

set testname "edited"
set fname [test_update_setup $testname]
set message "EDITED $fname\nADD $fname.other"
set changes "EDITED     $fname"
write_seq_to_file $fname
fossil add $fname
fossil commit -m "Add $fname"
write_seq_to_file "$fname.other"
fossil add $fname.other
fossil commit -m "Add $fname.other"
fossil up previous
write_seq_to_file $fname
test_update $testname $message $changes

set testname "unchanged"
set fname [test_update_setup $testname]
set message "ADD $fname\nUNCHANGED $fname.unchanged"
set changes ""
write_seq_to_file "$fname.unchanged"
fossil add "$fname.unchanged"
fossil commit -m "Add $fname.unchanged"
write_seq_to_file "$fname"
fossil add "$fname"
fossil commit -m "Add $fname"
fossil up previous
test_update $testname $message $changes

###############################################################################

test_cleanup
Added test/utf.test.

more than 10,000 changes

Added test/utf16be.txt.























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This file contains utf-16be text.
The purpose for including this file in the Fossil
repository is to provide the ability to test Fossil's
handling of UTF-16 using its own repository.

Browsing to this file in the web interface should display the file as
text on the screen.

When there are changes to this file those changes should show
up in the "diff" output and be properly displayed on the
screen.

Test procedures:

  1.  Verify that this file is correctly display using the /artifact
      webpage.

  2.  Verify that this file is correctly displayed by the /doc webpage.

  3.  Verify that changes to are correctly displayed by the /fdiff webpage.

  4.  Verify that the "fossil diff" command correctly displays changes
      in this file.  Do the same with the --tk option.
Added test/utf16le.txt.























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This file contains utf-16le text.
The purpose for including this file in the Fossil
repository is to provide the ability to test Fossil's
handling of UTF-16 using its own repository.

Browsing to this file in the web interface should display the file as
text on the screen.

When there are changes to this file those changes should show
up in the "diff" output and be properly displayed on the
screen.

Test procedures:

  1.  Verify that this file is correctly display using the /artifact
      webpage.

  2.  Verify that this file is correctly displayed by the /doc webpage.

  3.  Verify that changes to are correctly displayed by the /fdiff webpage.

  4.  Verify that the "fossil diff" command correctly displays changes
      in this file.  Do the same with the --tk option.
Added test/utf8-comment.txt.

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+
The comment formatter handles fullwidth and multi-byte [äöü] and symbols [☃] and emoji [💾] characters!
Added test/valgrind-www.tcl.

























































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#!/usr/bin/tclsh
#
# Run this script in an open Fossil checkout at the top-level with a
# fresh build of Fossil itself.  This script will run fossil on hundreds
# of different web-pages looking for memory allocation problems using
# valgrind.  Valgrind output appears on stderr.  Suggested test scenario:
#
#     make
#     tclsh valgrind-www.tcl 2>&1 | tee valgrind-out.txt
#
# Then examine the valgrind-out.txt file for issues.
#
proc run_query {url} {
  set fd [open q.txt w]
  puts $fd "GET $url HTTP/1.0\r\n\r"
  close $fd
  set msg {}
  catch {exec valgrind ./fossil test-http <q.txt 2>@ stderr} msg
  return $msg
}
set todo {}
foreach url {
  /home
  /timeline
  /brlist
  /taglist
  /reportlist
  /setup
  /dir
  /wcontent
} {
  set seen($url) 1
  set pending($url) 1
}
set limit 1000
set npending [llength [array names pending]]
proc get_pending {} {
  global pending npending
  set res [lindex [array names pending] [expr {int(rand()*$npending)}]]
  unset pending($res)
  incr npending -1
  return $res
}
for {set i 0} {$npending>0 && $i<$limit} {incr i} {
  set url [get_pending]
  puts "====== ([expr {$i+1}]) $url ======"
  set x [run_query $url]
  while {[regexp {<[aA] .*?href="(/[a-z].*?)".*?>(.*)$} $x all url tail]} {
    set u2 [string map {&lt; < &gt; > &quot; \" &amp; &} $url]
    if {![info exists seen($u2)]} {
      set pending($u2) 1
      set seen($u2) 1
      incr npending
    }
    set x $tail
  }
}
Added test/wiki.test.



























































































































































































































































































































































































































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#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Test wiki and attachment command Support
#

test_setup

# Disable backoffice for this test, otherwise its process lingers for some
# time after the test has completed.
# Perhaps, this should be done in test_setup and enabled explicitly only
# when needed.
fossil set backoffice-disable 1

# Return true if two files are similar (i.e. not only compress trailing spaces
# from a line, but remove any final LF from the file as well)
proc similar_file {a b} {
  set x ""
  if {[file exists $a]} {
    set x [read_file $a]
    regsub -all { +\n} $x \n x
    regsub -all {\n$} $x {} x
  }
  set y ""
  if {[file exists $b]} {
    set y [read_file $b]
    regsub -all { +\n} $y \n y
    regsub -all {\n$} $y {} y
  }
  return [expr {$x==$y}]
}

# Return the mime type in the manifest for a given wiki page
# Defaults to "error: some text" if the manifest can't be located and
# "text/x-fossil-wiki" (the default mimetype for rendering)
# if the N card is omitted in the manifest.
# Note: Makes fossil calls, so $CODE and $RESULT will be corrupted
proc get_mime_type {name} {
  global CODE RESULT
  fossil http << "GET /wiki?name=$name"
  if {$CODE != 0} {
    return "error: /wiki?name=$name $CODE $RESULT"
  }
  fossil whatis --type w $name
  if {$CODE != 0} {
    return "error: fossil whatis --type w $name $CODE $RESULT"
  }
  set CODE [regexp -line {^artifact:\s*([0-9a-f]+)$} $RESULT match info]
  if {$CODE == 0} {
    return "error: whatis returned no info for wiki page $name"
  }
  fossil artifact $info
  if {$CODE != 0} {
    return "error: fossil artifact $info $CODE $RESULT"
  }
  set CODE [regexp -line {^N (.*)$} $RESULT match mimetype]
  if {$CODE == 0} {
    return "text/x-fossil-wiki"
  }
  return $mimetype
}


###############################################################################
# Initially there should be no wiki entries
fossil wiki list
test wiki-0 {[normalize_result] eq {}}

###############################################################################
# Adding an entry should add it to the wiki list
write_file f1 "first wiki note"
fossil wiki create tcltest f1
test wiki-1 {$CODE == 0}
fossil wiki list
test wiki-2 {[normalize_result] eq {tcltest}}

###############################################################################
# Trying to add the same entry should fail
fossil wiki create tcltest f1 -expectError
test wiki-3 {$CODE != 0}

###############################################################################
# exporting the wiki page should give back similar text
fossil wiki export tcltest a1
test wiki-4 {[similar_file f1 a1]}

###############################################################################
# commiting a change to an existing page should replace the page on export
write_file f2 "second version of the page"
fossil wiki commit tcltest f2
test wiki-5 {$CODE == 0}
fossil wiki export tcltest a2
test wiki-6 {[similar_file f2 a2]}

###############################################################################
# But we shouldn't be able to update non-existant pages
fossil wiki commit doesntexist f1 -expectError
test wiki-7 {$CODE != 0}

###############################################################################
# There shouldn't be any tech notes at this point
fossil wiki list --technote
test wiki-8 {[normalize_result] eq {}}

###############################################################################
# Creating a tech note with a specified timestamp should add a technote
write_file f3 "A technote"
fossil wiki create technote f3 --technote {2016-01-01 12:34}
test wiki-9 {$CODE == 0}
fossil wiki list --technote
test wiki-10 {[normalize_result] eq {2016-01-01 12:34:00}}
fossil wiki list --technote --show-technote-ids
set technotelist [split $RESULT "\n"]
set veryfirsttechnoteid [lindex [split [lindex $technotelist 0]] 0]

###############################################################################
# exporting that technote should give back similar text
fossil wiki export a3 --technote {2016-01-01 12:34:00}
test wiki-11 {[similar_file f3 a3]}

###############################################################################
# Trying to add a technote with the same timestamp should succeed and create a
# second tech note
fossil wiki create 2ndnote f3 -technote {2016-01-01 12:34}
test wiki-13 {$CODE == 0}
fossil wiki list --technote
set technotelist [split $RESULT "\n"]
test wiki-13.1 {[llength $technotelist] == 2}

###############################################################################
# commiting a change to an existing technote should replace the page on export
# (this should update the tech note from wiki-13 as that the most recently
# updated one, that should also be the one exported by the export command)
write_file f4 "technote 2nd variant"
fossil wiki commit technote f4 --technote {2016-01-01 12:34}
test wiki-14 {$CODE == 0}
fossil wiki export a4 --technote {2016-01-01 12:34}
test wiki-15 {[similar_file f4 a4]}
# Also check that the tech note with the same timestamp, but modified less
# recently still has its original text
fossil wiki export a4.1 --technote $veryfirsttechnoteid
test wiki-15.1 {[similar_file f3 a4.1]}

###############################################################################
# But we shouldn't be able to update non-existant pages
fossil wiki commit doesntexist f1 -expectError
test wiki-16 {$CODE != 0}

###############################################################################
# Check specifying tags for a technote is OK
write_file f5 "technote with tags"
fossil wiki create {tagged technote} f5 --technote {2016-01-02 12:34} --technote-tags {A B}
test wiki-17 {$CODE == 0}
write_file f5.1 "editted and tagged technote"
fossil wiki commit {tagged technote} f5 --technote {2016-01-02 12:34} --technote-tags {C D}
test wiki-18 {$CODE == 0}

###############################################################################
# Check specifying a bgcolor for a technote is OK
write_file f6 "bgcolored technote"
fossil wiki create bgcolor f6 --technote {2016-01-03 12:34} --technote-bgcolor red
test wiki-19 {$CODE == 0}
write_file f6.1 "editted technote with a background color"
fossil wiki commit bgcolor f6.1 --technote {2016-01-03 12:34} --technote-bgcolor yellow
test wiki-20 {$CODE == 0}

###############################################################################
# Test adding an attachment to both a non-existant (should fail) and existing wiki page
write_file fa "This is a file to be attached"
fossil attachment add doesntexist fa -expectError
test wiki-21 {$CODE != 0}
fossil attachment add tcltest fa
test wiki-22 {$CODE == 0}

###############################################################################
# Test adding an attachment to both a non-existant (should fail) and existing tech note
fossil attachment add fa --technote {2016-07-22 12:00} -expectError
test wiki-23 {$CODE != 0}
fossil attachment add fa --technote {2016-01-03 12:34}
test wiki-24 {$CODE == 0}

###############################################################################
# Check that a wiki page with an attachment can be updated
fossil wiki commit tcltest f1
test wiki-25 {$CODE == 0}

###############################################################################
# Check that a technote with an attachment can be updated
fossil wiki commit technote f6 --technote {2016-01-03 12:34}
test wiki-26 {$CODE == 0}
fossil wiki commit technote f6 --technote {2016-01-03 12:34} --technote-tags {E F}
test wiki-27 {$CODE == 0}
fossil wiki commit technote f6 --technote {2016-01-03 12:34} --technote-bgcolor blue
test wiki-28 {$CODE == 0}

###############################################################################
# Check longest form of timestamp for the technote
write_file f7 "Different timestamps"
fossil wiki create technotenow f7 --technote {2016-01-04 12:34:56+00:00}
test wiki-29 {$CODE == 0}

###############################################################################
# Check a technote appears on the timeline
write_file f8 "Contents of a 'unique' tech note"
fossil wiki create {Unique technote} f8 --technote {2016-01-05 01:02:03}
fossil timeline
test wiki-30 {[string match *Unique*technote* $RESULT]}

###############################################################################
# Check for a collision between an attachment and a note, this was a
# bug that resulted from some code treating the attachment entry as if it
# were a technote when it isn't really.
#
# First, wait for the top of the next second so the attachment
# happens at a known time, then add an attachment to an existing note
# and a new note immediately after.

set t0 [clock seconds]
while {$t0 == [clock seconds]} {
  after 100
}
set t1 [clock format [clock seconds] -gmt 1 -format "%Y-%m-%d %H:%M:%S"]
write_file f9 "Timestamp: $t1"
fossil attachment add f9 --technote {2016-01-05 01:02:03}
test wiki-31 {$CODE == 0}
fossil wiki create {Attachment collision} f9 --technote now
test wiki-32 {$CODE == 0}
#
# Now waste time until the next second so that the remaining tests
# don't have to worry about a potential collision
set t0 [clock seconds]
while {$t0 == [clock seconds]} {
  after 100
}

###############################################################################
# Check a technote with no timestamp cannot be created, but that
# "now" is a valid stamp.
set t2 [clock format [clock seconds] -gmt 1 -format "%Y-%m-%d %H:%M:%S"]
write_file f10 "Even unstampted notes are delivered.\nStamped $t2"
fossil wiki create "Unstamped Note" f10 --technote -expectError
test wiki-33 {$CODE != 0}
fossil wiki create "Unstamped Note" f10 --technote now
test wiki-34 {$CODE == 0}
fossil wiki list -t
test wiki-35 {[string match "*$t2*" $RESULT]}

###############################################################################
# Check an attachment to it in the same second works.
write_file f11 "Time Stamp was $t2"
fossil attachment add f11 --technote $t2
test wiki-36 {$CODE == 0}
fossil timeline
test wiki-36-1 {$CODE == 0}
fossil wiki list -t
test wiki-36-2 {$CODE == 0}

###############################################################################
# Check that we have the expected number of tech notes on the list (and not
# extra ones from other events (such as the attachments) - 8 tech notes
# expected created by tests 9, 13, 17, 19, 29, 31, 32 and 34
fossil wiki list --technote
set technotelist [split $RESULT "\n"]
test wiki-37 {[llength $technotelist] == 8}

###############################################################################
# Check that using the show-technote-ids shows the same tech notes in the same
# order (with the technote id as the first word of the line)
fossil wiki list --technote --show-technote-ids
set technoteidlist [split $RESULT "\n"]
test wiki-38 {[llength $technotelist] == 8}
for {set i 0} {$i < [llength $technotelist]} {incr i} {
  set match "???????????????????????????????????????? "
  append match [lindex $technotelist $i]
  test "wiki-39-$i" {[string match $match [lindex $technoteidlist $i]]}
}

###############################################################################
# Create new tech note with a old timestamp so that it is oldest and then check that
# the contents of the oldest tech note (by tech note id, both full and short) match up
write_file f12 "A really old tech note"
fossil wiki create {Old tech note} f12 --technote {2001-07-07 09:08:07}
fossil wiki list --technote --show-technote-ids
set technotelist [split $RESULT "\n"]
set anoldtechnoteid [lindex [split [lindex $technotelist [llength $technotelist]-1]] 0]
fossil wiki export a12 --technote $anoldtechnoteid
test wiki-40 {[similar_file f12 a12]}

###############################################################################
# Also check that we can specify a prefix of the tech note id (note: with
# 9 items in the tech note at this point there is a chance of a collision.
# However with a 20 character prefix the chance of the collision is
# approximately 1 in 10^22 so this test ignores that possibility.)
fossil wiki export a12.1 --technote [string range $anoldtechnoteid 0 20]
test wiki-41 {[similar_file f12 a12.1]}

###############################################################################
# Now we need to force a collision in the first four characters of the tech
# note id if we don't already have one so we can check we get an error if the
# tech note id is ambiguous
set idcounts [dict create]
set maxcount 0
fossil wiki list --technote --show-technote-ids
set technotelist [split $RESULT "\n"]
for {set i 0} {$i < [llength $technotelist]} {incr i} {
  set fullid [lindex $technotelist $i]
  set id [string range $fullid 0 3]
  dict incr idcounts $id
  if {[dict get $idcounts $id] > $maxcount} {
    set maxid $id
    incr maxcount
  }
}
# get i so that, as a julian date, it is in the 1800s, i.e., older than
# any other tech note, but after 1 AD
set i 2400000
while {$maxcount < 2} {
  # keep getting older
  incr i -1
  write_file f13 "A tech note with timestamp of jday=$i"
  fossil wiki create "timestamp of $i" f13 --technote "$i"
  fossil wiki list --technote --show-technote-ids
  set technotelist [split $RESULT "\n"]
  set oldesttechnoteid [lindex [split [lindex $technotelist [llength $technotelist]-1]] 0]
  set id [string range $oldesttechnoteid 0 3]
  dict incr idcounts $id
  if {[dict get $idcounts $id] > $maxcount} {
    set maxid $id
    incr maxcount
  }
}
# Save the duplicate id for this and later tests
set duplicateid $maxid
fossil wiki export a13 --technote $duplicateid -expectError
test wiki-42 {$CODE != 0}

###############################################################################
# Check we can update technote by its id
write_file f14 "Updated text for the really old tech note"
fossil wiki commit {Old tech note} f14 --technote $anoldtechnoteid
fossil wiki export a14 --technote $anoldtechnoteid
test wiki-43 {[similar_file f14 a14]}

###############################################################################
# Check we can add attachments to a technote by its id
fossil attachment add fa --technote $anoldtechnoteid
test wiki-44 {$CODE == 0}

###############################################################################
# Also check that we can specify a prefix of the tech note id
write_file f15 "Updated text for the really old tech note specified by its id"
fossil wiki commit {Old tech note} f15 --technote [string range $anoldtechnoteid 0 20]
fossil wiki export a15 --technote $anoldtechnoteid
test wiki-45 {[similar_file f15 a15]}

###############################################################################
# Check we can add attachments to a technote by a prefix of its id
fossil attachment add fa --technote [string range $anoldtechnoteid 0 20]
test wiki-46 {$CODE == 0}

###############################################################################
# And we get an error for the ambiguous tech note id
fossil wiki commit {Old tech note} f15 --technote $duplicateid -expectError
test wiki-47 {$CODE != 0}
fossil attachment add fa --technote $duplicateid -expectError
test wiki-48 {$CODE != 0}

###############################################################################
# Check the default mimetype is text/x-fossil-wiki
test wiki-49 {[get_mime_type tcltest] == "text/x-fossil-wiki"}

###############################################################################
# Check long form of the mimetypes are recorded correctly
fossil wiki create tcltest-x-fossil f1 -mimetype text/x-fossil-wiki
test wiki-50 {[get_mime_type tcltest-x-fossil] == "text/x-fossil-wiki"}
fossil wiki create tcltest-x-markdown f1 -mimetype text/x-markdown
test wiki-51 {[get_mime_type tcltest-x-markdown] == "text/x-markdown"}
fossil wiki create tcltest-plain f1 -mimetype text/plain
test wiki-52 {[get_mime_type tcltest-plain] == "text/plain"}
fossil wiki create tcltest-x-random f1 -mimetype text/x-random
test wiki-53 {[get_mime_type tcltest-x-random] == "text/x-fossil-wiki"}

###############################################################################
# Check short form of the mimetypes are recorded correctly
fossil wiki create tcltest-x-fossil-short f1 -mimetype wiki
test wiki-54 {[get_mime_type tcltest-x-fossil-short] == "text/x-fossil-wiki"}
fossil wiki create tcltest-x-markdown-short f1 -mimetype markdown
test wiki-55 {[get_mime_type tcltest-x-markdown-short] == "text/x-markdown"}
fossil wiki create tcltest-plain-short f1 -mimetype plain
test wiki-56 {[get_mime_type tcltest-plain-short] == "text/plain"}
fossil wiki create tcltest-x-random-short f1 -mimetype random
test wiki-57 {[get_mime_type tcltest-x-random-short] == "text/x-fossil-wiki"}


###############################################################################
test_cleanup

Added tools/co-rsync.tcl.








































































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#!/bin/sh
#
# This is a TCL script that tries to sync the changes in a local
# Fossil checkout to another machine.  The changes are gathered into
# a tarball, then sent via ssh to the remote and unpacked.
#
# Usage:
#
#     co-rsync.tcl REMOTE
#
# Where REMOTE is the root of the remote repository into which changes
# are to be moved.
#
# Use Case:
#
# Sometimes while in the middle of an edit it is useful to transfer
# the incomplete changes to another machine for testing.  This could
# be accomplished using scp, but doing it that was is tedious if many
# files in multiple directories have changed.  This command does all
# the necessary transfer using a single command.
#
# A Tcl comment, whose contents don't matter \
exec tclsh "$0" "$@"

# Begin by changing directories to the root of the check-out.
#
set remote {}
set dryrun 0
proc usage {} {
  puts stderr "Usage: $::argv0 REMOTE"
  puts stderr "Options:"
  puts stderr "  --dryrun      No-op but print what would have happened"
  exit 1
}
foreach arg $argv {
  if {$arg=="--dryrun" || $arg=="--dry-run"} {
    set dryrun 1
    continue
  }
  if {$remote!=""} {
    usage
  }
  set remote $arg
}
if {$remote==""} usage

set in [open {|fossil status} rb]
set status [read $in]
if {[catch {close $in} msg]} {
  puts stderr $msg
  exit 1
}
set root {}
regexp {local-root: +([^\n]+)} $status all root
if {$root==""} {
  puts stderr "not in a fossil check-out"
  exit 1
}
cd $root
set tmpname filelist-
for {set i 0} {$i<3} {incr i} {
  append tmpname [format %08x [expr {int(rand()*0xffffffff)}]]
}
set out [open $tmpname wb]
puts $out [exec fossil changes --no-classify --no-merge]
close $out
set cmd "rsync -v --files-from=$tmpname . $remote"
puts $cmd
if {!$dryrun} {
  exec {*}$cmd
}
file delete $tmpname
Added tools/codecheck1.c.




























































































































































































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This program reads Fossil source code files and tries to verify that
** printf-style format strings are correct.
**
** This program implements a compile-time validation step on the Fossil
** source code.  Running this program is entirely optional.  Its role is
** similar to the -Wall compiler switch on gcc, or the scan-build utility
** of clang, or other static analyzers.  The purpose is to try to identify
** problems in the source code at compile-time.  The difference is that this
** static checker is specifically designed for the particular printf formatter
** implementation used by Fossil.
**
** Checks include:
**
**    *  Verify that vararg formatting routines like blob_printf() or
**       db_multi_exec() have the correct number of arguments for their
**       format string.
**
**    *  For routines designed to generate SQL or HTML or a URL or JSON,
**       detect and warn about possible injection attacks.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>

/*
** Debugging switch
*/
static int eVerbose = 0;

/*
** Malloc, aborting if it fails.
*/
void *safe_malloc(int nByte){
  void *x = malloc(nByte);
  if( x==0 ){
    fprintf(stderr, "failed to allocate %d bytes\n", nByte);
    exit(1);
  }
  return x;
}
void *safe_realloc(void *pOld, int nByte){
  void *x = realloc(pOld, nByte);
  if( x==0 ){
    fprintf(stderr, "failed to allocate %d bytes\n", nByte);
    exit(1);
  }
  return x;
}

/*
** Read the entire content of the file named zFilename into memory obtained
** from malloc().   Add a zero-terminator to the end.
** Return a pointer to that memory.
*/
static char *read_file(const char *zFilename){
  FILE *in;
  char *z;
  int nByte;
  int got;
  in = fopen(zFilename, "rb");
  if( in==0 ){
    return 0;
  }
  fseek(in, 0, SEEK_END);
  nByte = ftell(in);
  fseek(in, 0, SEEK_SET);
  z = safe_malloc( nByte+1 );
  got = fread(z, 1, nByte, in);
  z[got] = 0;
  fclose(in);
  return z;
}

/*
** When parsing the input file, the following token types are recognized.
*/
#define TK_SPACE      1      /* Whitespace or comments */
#define TK_ID         2      /* An identifier */
#define TK_STR        3      /* A string literal in double-quotes */
#define TK_OTHER      4      /* Any other token */
#define TK_EOF       99      /* End of file */

/*
** Determine the length and type of the token beginning at z[0]
*/
static int token_length(const char *z, int *pType, int *pLN){
  int i;
  if( z[0]==0 ){
    *pType = TK_EOF;
    return 0;
  }
  if( z[0]=='"' || z[0]=='\'' ){
    for(i=1; z[i] && z[i]!=z[0]; i++){
      if( z[i]=='\\' && z[i+1]!=0 ){
        if( z[i+1]=='\n' ) (*pLN)++;
        i++;
      }
    }
    if( z[i]!=0 ) i++;
    *pType = z[0]=='"' ? TK_STR : TK_OTHER;
    return i;
  }
  if( isalnum(z[0]) || z[0]=='_' ){
    for(i=1; isalnum(z[i]) || z[i]=='_'; i++){}
    *pType = isalpha(z[0]) || z[0]=='_' ? TK_ID : TK_OTHER;
    return i;
  }
  if( isspace(z[0]) ){
    if( z[0]=='\n' ) (*pLN)++;
    for(i=1; isspace(z[i]); i++){
      if( z[i]=='\n' ) (*pLN)++;
    }
    *pType = TK_SPACE;
    return i;
  }
  if( z[0]=='/' && z[1]=='*' ){
    for(i=2; z[i] && (z[i]!='*' || z[i+1]!='/'); i++){
      if( z[i]=='\n' ) (*pLN)++;
    }
    if( z[i] ) i += 2;
    *pType = TK_SPACE;
    return i;
  }
  if( z[0]=='/' && z[1]=='/' ){
    for(i=2; z[i] && z[i]!='\n'; i++){}
    if( z[i] ){
      (*pLN)++;
      i++;
    }
    *pType = TK_SPACE;
    return i;
  }
  if( z[0]=='\\' && (z[1]=='\n' || (z[1]=='\r' && z[2]=='\n')) ){
    *pType = TK_SPACE;
    return 1;
  }
  *pType = TK_OTHER;
  return 1;
}

/*
** Return the next non-whitespace token
*/
const char *next_non_whitespace(const char *z, int *pLen, int *pType){
  int len;
  int eType;
  int ln = 0;
  while( (len = token_length(z, &eType, &ln))>0 && eType==TK_SPACE ){
    z += len;
  }
  *pLen = len;
  *pType = eType;
  return z;
}

/*
** Return index into z[] for the first balanced TK_OTHER token with
** value cValue.
*/
static int distance_to(const char *z, char cVal){
  int len;
  int dist = 0;
  int eType;
  int nNest = 0;
  int ln = 0;
  while( z[0] && (len = token_length(z, &eType, &ln))>0 ){
    if( eType==TK_OTHER ){
      if( z[0]==cVal && nNest==0 ){
        break;
      }else if( z[0]=='(' ){
        nNest++;
      }else if( z[0]==')' ){
        nNest--;
      }
    }
    dist += len;
    z += len;
  }
  return dist;
}

/*
** Return the first non-whitespace characters in z[]
*/
static const char *skip_space(const char *z){
  while( isspace(z[0]) ){ z++; }
  return z;
}

/*
** Remove excess whitespace and nested "()" from string z.
*/
static char *simplify_expr(char *z){
  int n = (int)strlen(z);
  while( n>0 ){
    if( isspace(z[0]) ){
      z++;
      n--;
      continue;
    }
    if( z[0]=='(' && z[n-1]==')' ){
      z++;
      n -= 2;
      continue;
    }
    break;
  }
  z[n] = 0;
  return z;
}

/*
** Return true if the input is a string literal.
*/
static int is_string_lit(const char *z){
  int nu1, nu2;
  z = next_non_whitespace(z, &nu1, &nu2);
  if( strcmp(z, "NULL")==0 ) return 1;
  return z[0]=='"';
}

/*
** Return true if the input is an expression of string literals:
**
**      EXPR ? "..." : "..."
*/
static int is_string_expr(const char *z){
  int len = 0, eType;
  const char *zOrig = z;
  len = distance_to(z, '?');
  if( z[len]==0 && skip_space(z)[0]=='(' ){
    z = skip_space(z) + 1;
    len = distance_to(z, '?');
  }
  z += len;
  if( z[0]=='?' ){
    z++;
    z = next_non_whitespace(z, &len, &eType);
    if( eType==TK_STR ){
      z += len;
      z = next_non_whitespace(z, &len, &eType);
      if( eType==TK_OTHER && z[0]==':' ){
        z += len;
        z = next_non_whitespace(z, &len, &eType);
        if( eType==TK_STR ){
          z += len;
          z = next_non_whitespace(z, &len, &eType);
          if( eType==TK_EOF ) return 1;
          if( eType==TK_OTHER && z[0]==')' && skip_space(zOrig)[0]=='(' ){
            z += len;
            z = next_non_whitespace(z, &len, &eType);
            if( eType==TK_EOF ) return 1;
          }
        }
      }
    }
  }
  return 0;
}

/*
** A list of functions that return strings that are safe to insert into
** SQL using %s.
*/
static const char *azSafeFunc[] = {
  "filename_collation",
  "leaf_is_closed_sql",
  "timeline_query_for_www",
  "timeline_query_for_tty",
  "blob_sql_text",
  "glob_expr",
  "fossil_all_reserved_names",
  "configure_inop_rhs",
  "db_setting_inop_rhs",
};

/*
** Return true if the input is an argument that is safe to use with %s
** while building an SQL statement.
*/
static int is_sql_safe(const char *z){
  int len, eType;
  int i;

  /* A string literal is safe for use with %s */
  if( is_string_lit(z) ) return 1;

  /* Certain functions are guaranteed to return a string that is safe
  ** for use with %s */
  z = next_non_whitespace(z, &len, &eType);
  for(i=0; i<sizeof(azSafeFunc)/sizeof(azSafeFunc[0]); i++){
    if( eType==TK_ID
     && strncmp(z, azSafeFunc[i], len)==0
     && strlen(azSafeFunc[i])==len
    ){
      return 1;
    }
  }

  /* Expressions of the form:  EXPR ? "..." : "...." can count as
  ** a string literal. */
  if( is_string_expr(z) ) return 1;

  /* If the "safe-for-%s" comment appears in the argument, then
  ** let it through */
  if( strstr(z, "/*safe-for-%s*/")!=0 ) return 1;

  return 0;
}

/*
** Return true if the input is an argument that is never safe for use
** with %s.
*/
static int never_safe(const char *z){
  if( strstr(z,"/*safe-for-%s*/")!=0 ) return 0;
  if( z[0]=='P' ){
    if( strncmp(z,"PIF(",4)==0 ) return 0;
    if( strncmp(z,"PCK(",4)==0 ) return 0;
    return 1;
  }
  if( strncmp(z,"cgi_param",9)==0 ) return 1;
  return 0;
}

/*
** Processing flags
*/
#define FMT_SQL   0x00001     /* Generator for SQL text */
#define FMT_HTML  0x00002     /* Generator for HTML text */
#define FMT_URL   0x00004     /* Generator for URLs */
#define FMT_JSON  0x00008     /* Generator for JSON */
#define FMT_SAFE  0x00010     /* Generator for human-readable text */
#define FMT_LIT   0x00020     /* Just verify that a string literal */
#define FMT_PX    0x00040     /* Must have a literal prefix in format string */

/*
** A list of internal Fossil interfaces that take a printf-style format
** string.
*/
struct FmtFunc {
  const char *zFName;    /* Name of the function */
  int iFmtArg;           /* Index of format argument.  Leftmost is 1. */
  unsigned fmtFlags;     /* Processing flags */
} aFmtFunc[] = {
  { "admin_log",                  1, FMT_SAFE },
  { "ajax_route_error",           2, FMT_SAFE },
  { "audit_append",               3, FMT_SAFE },
  { "backofficeTrace",            1, FMT_SAFE },
  { "backoffice_log",             1, FMT_SAFE },
  { "blob_append_sql",            2, FMT_SQL },
  { "blob_appendf",               2, FMT_SAFE },
  { "cgi_debug",                  1, FMT_SAFE },
  { "cgi_panic",                  1, FMT_SAFE },
  { "cgi_printf",                 1, FMT_HTML },
  { "cgi_printf_header",          1, FMT_HTML },
  { "cgi_redirectf",              1, FMT_URL },
  { "chref",                      2, FMT_URL },
  { "CX",                         1, FMT_HTML },
  { "db_blob",                    2, FMT_SQL },
  { "db_debug",                   1, FMT_SQL },
  { "db_double",                  2, FMT_SQL },
  { "db_err",                     1, FMT_SAFE },
  { "db_exists",                  1, FMT_SQL },
  { "db_get_mprintf",             2, FMT_SAFE },
  { "db_int",                     2, FMT_SQL },
  { "db_int64",                   2, FMT_SQL },
  { "db_lset",                    1, FMT_LIT },
  { "db_lset_int",                1, FMT_LIT },
  { "db_multi_exec",              1, FMT_SQL },
  { "db_optional_sql",            2, FMT_SQL },
  { "db_prepare",                 2, FMT_SQL },
  { "db_prepare_ignore_error",    2, FMT_SQL },
  { "db_set",                     1, FMT_LIT },
  { "db_set_int",                 1, FMT_LIT },
  { "db_set_mprintf",             3, FMT_PX },
  { "db_static_prepare",          2, FMT_SQL },
  { "db_text",                    2, FMT_SQL },
  { "db_unset",                   1, FMT_LIT },
  { "db_unset_mprintf",           2, FMT_PX },
  { "emailerError",               2, FMT_SAFE },
  { "entry_attribute",            4, FMT_LIT },
  { "fileedit_ajax_error",        2, FMT_SAFE },
  { "form_begin",                 2, FMT_URL },
  { "fossil_error",               2, FMT_SAFE },
  { "fossil_errorlog",            1, FMT_SAFE },
  { "fossil_fatal",               1, FMT_SAFE },
  { "fossil_fatal_recursive",     1, FMT_SAFE },
  { "fossil_panic",               1, FMT_SAFE },
  { "fossil_print",               1, FMT_SAFE },
  { "fossil_trace",               1, FMT_SAFE },
  { "fossil_warning",             1, FMT_SAFE },
  { "gitmirror_message",          2, FMT_SAFE },
  { "href",                       1, FMT_URL },
  { "json_new_string_f",          1, FMT_SAFE },
  { "json_set_err",               2, FMT_SAFE },
  { "json_warn",                  2, FMT_SAFE },
  { "mprintf",                    1, FMT_SAFE },
  { "multiple_choice_attribute",  3, FMT_LIT },
  { "onoff_attribute",            3, FMT_LIT },
  { "pop3_print",                 2, FMT_SAFE },
  { "smtp_send_line",             2, FMT_SAFE },
  { "smtp_server_send",           2, FMT_SAFE },
  { "socket_set_errmsg",          1, FMT_SAFE },
  { "ssl_set_errmsg",             1, FMT_SAFE },
  { "style_copy_button",          5, FMT_SAFE },
  { "style_header",               1, FMT_HTML },
  { "style_set_current_page",     1, FMT_URL },
  { "style_submenu_element",      2, FMT_URL },
  { "style_submenu_sql",          3, FMT_SQL },
  { "textarea_attribute",         5, FMT_LIT },
  { "tktsetup_generic",           1, FMT_LIT },
  { "webpage_error",              1, FMT_SAFE },
  { "webpage_notfound_error",     1, FMT_SAFE },
  { "xfersetup_generic",          1, FMT_LIT },
  { "xhref",                      2, FMT_URL },
};

/*
** Comparison function for two FmtFunc entries
*/
static int fmtfunc_cmp(const void *pAA, const void *pBB){
  const struct FmtFunc *pA = (const struct FmtFunc*)pAA;
  const struct FmtFunc *pB = (const struct FmtFunc*)pBB;
  return strcmp(pA->zFName, pB->zFName);
}

/*
** Determine if the indentifier zIdent of length nIndent is a Fossil
** internal interface that uses a printf-style argument.  Return zero if not.
** Return the index of the format string if true with the left-most
** argument having an index of 1.
*/
static int isFormatFunc(const char *zIdent, int nIdent, unsigned *pFlags){
  int upr, lwr;
  lwr = 0;
  upr = sizeof(aFmtFunc)/sizeof(aFmtFunc[0]) - 1;
  while( lwr<=upr ){
    unsigned x = (lwr + upr)/2;
    int c = strncmp(zIdent, aFmtFunc[x].zFName, nIdent);
    if( c==0 ){
      if( aFmtFunc[x].zFName[nIdent]==0 ){
        *pFlags = aFmtFunc[x].fmtFlags;
        return aFmtFunc[x].iFmtArg;
      }
      c = -1;
    }
    if( c<0 ){
      upr = x - 1;
    }else{
      lwr = x + 1;
    }
  }
  *pFlags = 0;
  return 0;
}

/*
** Return the expected number of arguments for the format string.
** Return -1 if the value cannot be computed.
**
** For each argument less than nType, store the conversion character
** for that argument in cType[i].
**
** Store the number of initial literal characters of the format string
** in *pInit.
*/
static int formatArgCount(const char *z, int nType, char *cType, int *pInit){
  int nArg = 0;
  int i, k;
  int len;
  int eType;
  int ln = 0;
  *pInit = 0;
  while( z[0] ){
    len = token_length(z, &eType, &ln);
    if( eType==TK_STR ){
      for(i=1; i<len-1 && isalpha(z[i]); i++){}
      *pInit = i-1;
      for(i=1; i<len-1; i++){
        if( z[i]!='%' ) continue;
        if( z[i+1]=='%' ){ i++; continue; }
        for(k=i+1; k<len && !isalpha(z[k]); k++){
          if( z[k]=='*' || z[k]=='#' ){
            if( nArg<nType ) cType[nArg] = z[k];
            nArg++;
          }
        }
        if( z[k]!='R' ){
          if( nArg<nType ) cType[nArg] = z[k];
          nArg++;
        }
      }
    }
    z += len;
  }
  return nArg;
}

/*
** The function call that begins at zFCall[0] (which is on line lnFCall of the
** original file) is a function that uses a printf-style format string
** on argument number fmtArg.  It has processings flags fmtFlags.  Do
** compile-time checking on this function, output any errors, and return
** the number of errors.
*/
static int checkFormatFunc(
  const char *zFilename, /* Name of the file being processed */
  const char *zFCall,    /* Pointer to start of function call */
  int lnFCall,           /* Line number that holds z[0] */
  int fmtArg,            /* Format string should be this argument */
  int fmtFlags           /* Extra processing flags */
){
  int szFName;
  int eToken;
  int ln = lnFCall;
  int len;
  const char *zStart;
  char *z;
  char *zCopy;
  int nArg = 0;
  const char **azArg = 0;
  int i, k;
  int nErr = 0;
  char *acType;
  int nInit = 0;

  szFName = token_length(zFCall, &eToken, &ln);
  zStart = next_non_whitespace(zFCall+szFName, &len, &eToken);
  assert( zStart[0]=='(' && len==1 );
  len = distance_to(zStart+1, ')');
  zCopy = safe_malloc( len + 1 );
  memcpy(zCopy, zStart+1, len);
  zCopy[len] = 0;
  azArg = 0;
  nArg = 0;
  z = zCopy;
  while( z[0] ){
    char cEnd;
    len = distance_to(z, ',');
    cEnd = z[len];
    z[len] = 0;
    azArg = safe_realloc((char*)azArg, (sizeof(azArg[0])+1)*(nArg+1));
    azArg[nArg++] = simplify_expr(z);
    if( cEnd==0 ) break;
    z += len + 1;
  }
  acType = (char*)&azArg[nArg];
  if( fmtArg>nArg ){
    printf("%s:%d: too few arguments to %.*s()\n",
           zFilename, lnFCall, szFName, zFCall);
    nErr++;
  }else{
    const char *zFmt = azArg[fmtArg-1];
    const char *zOverride = strstr(zFmt, "/*works-like:");
    if( zOverride ) zFmt = zOverride + sizeof("/*works-like:")-1;
    if( fmtFlags & FMT_LIT ){
      if( !is_string_lit(zFmt) ){
        printf("%s:%d: argument %d to %.*s() should be a string literal\n",
               zFilename, lnFCall, fmtArg, szFName, zFCall);
        nErr++;
      }
    }else if( !is_string_lit(zFmt) ){
      printf("%s:%d: %.*s() has non-constant format on arg[%d]\n",
             zFilename, lnFCall, szFName, zFCall, fmtArg-1);
      nErr++;
    }else if( (k = formatArgCount(zFmt, nArg, acType, &nInit))>=0
             && nArg!=fmtArg+k ){
      printf("%s:%d: too %s arguments to %.*s() "
             "- got %d and expected %d\n",
             zFilename, lnFCall, (nArg<fmtArg+k ? "few" : "many"),
             szFName, zFCall, nArg, fmtArg+k);
      nErr++;
    }else if( (fmtFlags & FMT_PX)!=0 ){
      if( nInit==0 ){
        printf("%s:%d: format string on %.*s() should have"
               " an ASCII character prefix\n",
          zFilename, lnFCall, szFName, zFCall);
        nErr++;
      }
    }else if( (fmtFlags & FMT_SAFE)==0 ){
      for(i=0; i<nArg && i<k; i++){
        if( (acType[i]=='s' || acType[i]=='z' || acType[i]=='b') ){
          const char *zExpr = azArg[fmtArg+i];
          if( never_safe(zExpr) ){
            printf("%s:%d: Argument %d to %.*s() is not safe for"
                   " a query parameter\n",
               zFilename, lnFCall, i+fmtArg, szFName, zFCall);
             nErr++;

          }else if( (fmtFlags & FMT_SQL)!=0 && !is_sql_safe(zExpr) ){
            printf("%s:%d: Argument %d to %.*s() not safe for SQL\n",
               zFilename, lnFCall, i+fmtArg, szFName, zFCall);
             nErr++;
          }
        }
      }
    }
  }
  if( nErr ){
    for(i=0; i<nArg; i++){
      printf("   arg[%d]: %s\n", i, azArg[i]);
    }
  }else if( eVerbose>1 ){
    printf("%s:%d: %.*s() ok for %d arguments\n",
      zFilename, lnFCall, szFName, zFCall, nArg);
  }
  free((char*)azArg);
  free(zCopy);
  return nErr;
}


/*
** Do a design-rule check of format strings for the file named zName
** with content zContent.  Write errors on standard output.  Return
** the number of errors.
*/
static int scan_file(const char *zName, const char *zContent){
  const char *z;
  int ln = 0;
  int szToken;
  int eToken;
  const char *zPrev = 0;
  int ePrev = 0;
  int szPrev = 0;
  int lnPrev = 0;
  int nCurly = 0;
  int x;
  unsigned fmtFlags = 0;
  int nErr = 0;

  if( zContent==0 ){
    printf("cannot read file: %s\n", zName);
    return 1;
  }
  for(z=zContent; z[0]; z += szToken){
    szToken = token_length(z, &eToken, &ln);
    if( eToken==TK_SPACE ) continue;
    if( eToken==TK_OTHER ){
      if( z[0]=='{' ){
        nCurly++;
      }else if( z[0]=='}' ){
        nCurly--;
      }else if( nCurly>0 && z[0]=='(' && ePrev==TK_ID
            && (x = isFormatFunc(zPrev,szPrev,&fmtFlags))>0 ){
        nErr += checkFormatFunc(zName, zPrev, lnPrev, x, fmtFlags);
      }
    }
    zPrev = z;
    ePrev = eToken;
    szPrev = szToken;
    lnPrev = ln;
  }
  return nErr;
}

/*
** Check for format-string design rule violations on all files listed
** on the command-line.
**
** The eVerbose global variable is incremented with each "-v" argument.
*/
int main(int argc, char **argv){
  int i;
  int nErr = 0;
  qsort(aFmtFunc, sizeof(aFmtFunc)/sizeof(aFmtFunc[0]),
        sizeof(aFmtFunc[0]), fmtfunc_cmp);
  for(i=1; i<argc; i++){
    char *zFile;
    if( strcmp(argv[i],"-v")==0 ){
      eVerbose++;
      continue;
    }
    if( eVerbose>0 ) printf("Processing %s...\n", argv[i]);
    zFile = read_file(argv[i]);
    nErr += scan_file(argv[i], zFile);
    free(zFile);
  }
  return nErr;
}
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# individuals.  For exact contribution history, see the revision
# history and logs, available at http://fossil-scm.hwaci.com/fossil
# # ## ### ##### ######## ############# #####################

## Helper application, debugging of cvs2fossil. This application
## extracts all information about a changeset and writes it nicely
## formatted to stdout. The changeset is specified by its internal
## numerical id. 
## numerical id.

# # ## ### ##### ######## ############# #####################
## Requirements, extended package management for local packages.

lappend auto_path [file join [file dirname [info script]] lib]

package require Tcl 8.4                               ; # Required runtime.
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	foreach item [array names limits] {
	    set mins $minsa($item)
	    set maxp $maxp($item)
	    # Note that for the min successor position "" represents
	    # +infinity
	    integrity assert {
		($mins eq "") || ($maxp < $mins) 
		($mins eq "") || ($maxp < $mins)
	    } {Item <$item> is backward at file level ($maxp >= $mins)}
	}

	# Save the limits for the splitter, and compute the border at
	# which to split as the minimum of all minimal successor
	# positions.

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    # List of all known changesets of a type.
    typevariable mytchangesets -array {
	sym::branch {}
	sym::tag    {}
	rev         {}
    }
					

    typevariable myitemmap     -array {} ; # Map from items (tagged)
					   # to the list of changesets
					   # containing it. Each item
					   # can be used by only one
					   # changeset.
    typevariable myidmap   -array {} ; # Map from changeset id to
				       # changeset.
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	variable lcba
	variable lmba
	variable mid

	struct::list assign [minfo] _ _ _ cba _ mba

	set dc [expr $cba - $lcba] ; set lcba $cba	
	set dm [expr $mba - $lmba] ; set lmba $mba	
	set dc [expr $cba - $lcba] ; set lcba $cba
	set dm [expr $mba - $lmba] ; set lmba $mba

	# projection: 1          2 3          4 5         6 7          6 8         10
	return "[F [incr mid]] | [F $cba] | [F $dc] | [F $mba] | [F $dm] |=| "
    }

    proc mark {} {
	variable track ; if {!$track} return
Added tools/decode-email.c.



































































































































































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/*
** This program reads a raw email file and attempts to decode it into
** a more human-readable format.  The following decodings are done:
**
**  (1) Header values are prefixed by "| " at the left margin.
**
**  (2) Content-Transfer-Encoding is recognized and the content is
**      decoded for display.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <ctype.h>

#define BINARY 0
#define BASE64 1
#define QUOTED 2

static int decode_hex(char c){
  if( c>='0' && c<='9' ) return c - '0';
  if( c>='A' && c<='F' ) return c - 'A' + 10;
  if( c>='a' && c<='f' ) return c - 'a' + 10;
  return -1;
}

static void convert_file(const char *zFilename, FILE *in){
  int inHdr = 1;
  int n;
  int nBoundary;
  int decodeType = 0;
  int textMimetype = 1;
  char *zB;
  char zBoundary[200];
  char zLine[5000];
  char zOut[5000];
  while( fgets(zLine, sizeof(zLine), in) ){
    if( !inHdr
     && zLine[0]=='-'
     && zLine[1]=='-'
     && strncmp(zLine+2,zBoundary,nBoundary)==0
    ){
      printf("|----------------- end of body section ---------|\n");
      inHdr = 1;
    }
    if( !inHdr ){
      if( textMimetype && decodeType==BASE64 ){
        int ii, jj, c, x, y;
        int bits = 0;
        for(ii=jj=0; (c = zLine[ii])!=0; ii++){
          if( c>='A' && c<='Z' ){
            x = c - 'A';
          }else if( c>='a' && c<='z' ){
            x = c - 'a' + 26;
          }else if( c>='0' && c<='9' ){
            x = c - '0' + 52;
          }else if( c=='+' ){
            x = 62;
          }else if( c=='/' ){
            x = 63;
          }else if( c=='=' ){
            x = 0;
          }else{
            continue;
          }
          if( bits==0 ){
            y = x;
            bits = 6;
          }else if( bits==6 ){
            zOut[jj++] = ((y<<2) & 0xfc) | ((x>>4) & 0x03);
            y = x & 0xf;
            bits = 4;
          }else if( bits==4 ){
            zOut[jj++] = ((y<<4) & 0xf0) | ((x>>2) & 0x0f);
            y = x & 0x3;
            bits = 2;
          }else if( bits==2 ){
            zOut[jj++] = ((y<<6) & 0xc0) | (x & 0x3f);
            bits = 0;
          }
        }
        zOut[jj] = 0;
        printf("%s", zOut);
      }else if( textMimetype && decodeType==QUOTED ){
        int ii, jj, c;
        for(ii=jj=0; (c = zLine[ii])!=0; ii++){
          if( c=='=' ){
            int x1 = decode_hex(zLine[ii+1]);
            int x2 = decode_hex(zLine[ii+2]);
            if( x1>=0 && x2>=0 ){
              zOut[jj++] = (x1<<4) | x2;
              ii += 2;
            }else if( zLine[ii+1]=='\r' && zLine[ii+2]=='\n' ){
              ii += 2;
            }
          }else{
            zOut[jj++] = c;
          }
        }
        zOut[jj] = 0;
        printf("%s", zOut);
      }else{
        printf("%s", zLine);
      }
      continue;
    }
    n = (int)strlen(zLine);
    while( n>0 && isspace(zLine[n-1]) ){ n--; }
    zLine[n] = 0;
    if( n==0 ){
      inHdr = 0;
      printf("|----------------- end of header ---------------|\n");
      continue;
    }
    printf("| %s\n", zLine);
    if( strncasecmp(zLine,"Content-Type:", 13)==0 ){
      textMimetype = strstr(zLine, "text/")!=0;
      printf("|** %s content type **|\n",
          textMimetype ? "Text" : "Non-text");
    }
    if( strncasecmp(zLine,"Content-Transfer-Encoding:", 26)==0 ){
      if( strcasestr(zLine, "base64") ){
        decodeType = BASE64;
      }else if( strcasestr(zLine, "quoted-printable") ){
        decodeType = QUOTED;
      }else{
        decodeType = BINARY;
      }
      printf("|** Content encoding %s **|\n",
        decodeType==BASE64 ? "BASE64" :
        decodeType==QUOTED ? "QUOTED" : "BINARY");
    }
    zB = strstr(zLine, "boundary=\"");
    if( zB ){
      int kk;
      zB += 10;
      for(kk=0; zB[kk] && zB[kk]!='"' && kk<sizeof(zBoundary)-1; kk++){
        zBoundary[kk] = zB[kk];
      }
      zBoundary[kk] = 0;
      nBoundary = kk;
      printf("|** boundary [%s] **|\n", zBoundary);
    }
  }
}

int main(int argc, char **argv){
  if( argc==1 ){
    convert_file("<stdin>", stdin);
    return 0;
  }else{
    int i;
    for(i=1; i<argc; i++){
      FILE *in = fopen(argv[i], "rb");
      if( in==0 ){
        fprintf(stderr, "cannot open \"%s\"", argv[i]);
      }else{
        convert_file(argv[i], in);
        fclose(in);
      }
    }
  }
  return 0;
}
Added tools/email-monitor.tcl.



















































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#!/usr/bin/tcl
#
# Monitor the database file named on the command line for
# incoming email messages.  Print the "To:" line of each
# email on standard output as it is received.
#
# It should be relatively easy to modify this scribe to actually
# deliver the emails to a real email transfer agent such as
# Postfix.
#
# For long-term use, set the polling interval to something
# greater than the default 100 milliseconds.  Polling once
# every 10 seconds is probably sufficient.
#
set POLLING_INTERVAL 100   ;# milliseconds

set dbfile [lindex $argv 0]
if {[llength $argv]!=1} {
  puts stderr "Usage: $argv0 DBFILE"
  exit 1
}
package require sqlite3
puts "SQLite version [sqlite3 -version]"
sqlite3 db $dbfile
db timeout 2000
catch {db eval {PRAGMA journal_mode=WAL}}
db eval {
  CREATE TABLE IF NOT EXISTS email(
    emailid INTEGER PRIMARY KEY,
    msg TXT
  );
}
while {1} {
  db transaction immediate {
    set n 0
    db eval {SELECT msg FROM email} {
      set email ???
      regexp {To: \S*} $msg to
      puts "$to ([string length $msg] bytes)"
      incr n
    }
    if {$n>0} {
      db eval {DELETE FROM email}
    }
    # Hold the write lock a little longer in order to exercise
    # the SQLITE_BUSY handling logic on the writing inside of
    # Fossil.  Probably comment-out this line for production use.
    after 100
  }
  after $POLLING_INTERVAL
}
Added tools/email-sender.tcl.









































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#!/usr/bin/tcl
#
# Monitor the database file named by the DBFILE variable
# looking for email messages sent by Fossil.  Forward each
# to /usr/sbin/sendmail.
#
set POLLING_INTERVAL 10000   ;# milliseconds
set DBFILE /home/www/fossil/emailqueue.db
set PIPE "/usr/sbin/sendmail -ti"

package require sqlite3
# puts "SQLite version [sqlite3 -version]"
sqlite3 db $DBFILE
db timeout 5000
catch {db eval {PRAGMA journal_mode=WAL}}
db eval {
  CREATE TABLE IF NOT EXISTS email(
    emailid INTEGER PRIMARY KEY,
    msg TXT
  );
}
while {1} {
  db transaction immediate {
    set n 0
    db eval {SELECT msg FROM email} {
      set pipe $PIPE
      if {[regexp {\nFrom:[^\n]*<([^>]+)>} $msg all addr]} {
        append pipe " -f $addr"
      }
      set out [open |$pipe w]
      puts -nonewline $out $msg
      flush $out
      close $out
      incr n
    }
    if {$n>0} {
      db eval {DELETE FROM email}
    }
  }
  after $POLLING_INTERVAL
}
Added tools/emcc.sh.in.




























































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#!/usr/bin/bash
########################################################################
# WARNING: emcc.sh is generated from emcc.sh.in by the configure
# process. Do not edit emcc.sh directly, as it may be deleted or
# overwritten by the configure script.
#
# A wrapper around the emcc compiler which uses configure-time state
# to locate the Emscripten SDK and import the SDK's environment
# script, if needed.
########################################################################
# EMSDK_HOME comes from the configure --with-emsdk=/dir flag.
# EMSDK_ENV is ${thatDir}/emsdk_env.sh and is also set by the
# configure process.
EMSDK_HOME="@EMSDK_HOME@"
EMSDK_ENV="@EMSDK_ENV@"

emcc=$(which emcc 2>/dev/null)

if [ x = "x${emcc}" ]; then
  # If emcc is not found in the path, try to find it via an emsdk
  # installation. The SDK variant is the official installation
  # style supported by the Emscripten folks, but emcc is also
  # available via package managers on some OSes.
  if [ x = "x${EMSDK_HOME}" ]; then
    echo "EMSDK_HOME is not set. Pass --with-emsdk=/path/to/emsdk" \
         "to the configure script." 1>&2
    exit 1
  fi

  if [ x = "x${EMSDK_ENV}" ]; then
    if [ -f "${EMSDK_HOME}/emsdk_env.sh" ]; then
      EMSDK_ENV="${EMSDK_HOME}/emsdk_env.sh"
    else
      echo "EMSDK_ENV is not set. Expecting configure script to set it." 1>&2
      exit 2
    fi
  fi

  if [ ! -f "${EMSDK_ENV}" ]; then
    echo "emsdk_env script not found: $EMSDK_ENV" 1>&2
    exit 3
  fi

  # $EMSDK is part of the state set by emsdk_env.sh.
  if [ x = "x${EMSDK}" ]; then
    source "${EMSDK_ENV}" >/dev/null 2>&1 || {
      # ^^^ unfortunately outputs lots of noise to stderr
      rc=$?
      echo "Error sourcing ${EMSDK_ENV}"
      exit $rc
    }
  fi
  emcc=$(which emcc 2>/dev/null)
  if [ x = "x${emcc}" ]; then
    echo "emcc not found in PATH. Normally that's set up by EMSDK_ENV." 1>&2
    exit 4
  fi
fi

exec emcc "$@"
Added tools/fossil-autocomplete.bash.















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# Command name completion for Fossil.
# Mailing-list contribution by Stuart Rackham.
function _fossil() {
    local cur commands
    cur=${COMP_WORDS[COMP_CWORD]}
    commands=$(fossil help --all)
    if [ $COMP_CWORD -eq 1 ] || [ ${COMP_WORDS[1]} = help ]; then
        # Command name completion for 1st argument or 2nd if help command.
        COMPREPLY=( $(compgen -W "$commands" $cur) )
    else
        # File name completion for other arguments.
        COMPREPLY=( $(compgen -f $cur{}) )
    fi
}
complete -o default -F _fossil fossil f
Added tools/fossil-autocomplete.zsh.









































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#compdef fossil
# Origin: https://chiselapp.com/user/lifepillar/repository/fossil-zsh-completion
#################################################################################
#                                                                               #
# Copyright 2020 Lifepillar                                                     #
#                                                                               #
# Permission is hereby granted, free of charge, to any person obtaining a copy  #
# of this software and associated documentation files (the "Software"), to deal #
# in the Software without restriction, including without limitation the rights  #
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     #
# copies of the Software, and to permit persons to whom the Software is         #
# furnished to do so, subject to the following conditions:                      #
#                                                                               #
# The above copyright notice and this permission notice shall be included in    #
# all copies or substantial portions of the Software.                           #
#                                                                               #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    #
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      #
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   #
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        #
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, #
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE #
# SOFTWARE.                                                                     #
#                                                                               #
#################################################################################

# To reload the completion function after it has been modified:
#
# $ unfunction _fossil
# $ autoload -U _fossil
#
# See also: http://zsh.sourceforge.net/Doc/Release/Completion-System.html
# See also: https://github.com/zsh-users/zsh-completions/blob/master/zsh-completions-howto.org

################################################################################
# Functions that help build this completion file                               #
################################################################################

# This function can be used to generate scaffolding code for the options of all
# the commands. Copy and paste the result at the suitable spot in this script
# to update it. To parse all commands:
#
#     __fossil_parse_help -a
#
# To parse all test commands:
#
#     __fossil_parse_help -t
#
# NOTE: The code must be adapted manually. Diff with previous version!
function __fossil_parse_help() {
  echo '      case "$words[1]" in'
  for c in `fossil help $1 | xargs -n1 | sort`;
  do
    echo "        ($c)"
    echo '          _arguments \\'
    __fossil_format_options $c;
    echo "          '(- *)'--help'[Show help and exit]' \\"
    echo "          '*:files:_files'"
    echo ''
    echo '          ;;'
  done;
  echo '      esac'
  echo '      ;;'
}

# Extract the options of a command and format it in a way that can be used in
# a ZSH completion script.
# Use `__fossil_format_options -o` to extract the common options.
function __fossil_format_options() {
  fossil help $1 2>&1 \
    | grep '^\s\{1,3\}-' \
    | sed -E 's/^ +//' \
    | awk -F ' +' '{
    v=match($1,/\|/)
    split($1,y,"|")
    printf "          "
    if (v>0)
      printf "\"(--help %s %s)\"{%s,%s}",y[1],y[2],y[1],y[2];
    else
      printf "\"(--help %s)\"%s",y[1],y[1];
    $1=""
    gsub(/^ +| +$/,"",$0);
    gsub(/^ +| +$/,"",$0);
    gsub(/\x27/,"\x27\"\x27\"\x27",$0);
    print "\x27["$0"]\x27 \\";
  }'
}


################################################################################
# Helper functions used for completion.                                        #
################################################################################

function __fossil_commands() {
  fossil help --all
}

function __fossil_test_commands() {
  fossil help --test
}

function __fossil_all_commands() {
  __fossil_commands
  __fossil_test_commands
}

function __fossil_users() {
  fossil user ls 2>/dev/null | awk '{print $1}'
}

function __fossil_branches() {
  fossil branch ls -a 2>/dev/null | sed 's/\* *//'
}

function __fossil_tags() {
  fossil tag ls 2>/dev/null
}

function __fossil_repos() {
  ls | grep .fossil
  fossil all ls 2>/dev/null
}

function __fossil_remotes() {
  fossil remote list 2>/dev/null | awk '{print $1}'
}

function __fossil_wiki_pages() {
  fossil wiki list 2>/dev/null
}

function __fossil_areas() {
  compadd all email project shun skin ticket user alias subscriber
  return 0
}

function __fossil_settings() {
  fossil help --setting
}

function __fossil_urls() {
  local u
  u=($(__fossil_remotes))
  compadd -a u
  compadd -S '' file:// http:// https:// ssh://
  return 0
}

################################################################################
# Main                                                                         #
################################################################################

function _fossil() {
  local context state state_descr line
  typeset -A opt_args

  local -a _common_options
  # Scaffolding code for common options can be generated with `__fossil_format_options -o`.
  _common_options=(
    "(--help --args)"--args'[FILENAME Read additional arguments and options from FILENAME]:file:_files'
    "(--help --cgitrace)"--cgitrace'[Active CGI tracing]'
    "(--help --comfmtflags --comment-format)"--comfmtflags'[VALUE Set comment formatting flags to VALUE]:value:'
    "(--help --comment-format --comfmtflags)"--comment-format'[VALUE Alias for --comfmtflags]:value:'
    "(--help --errorlog)"--errorlog'[FILENAME Log errors to FILENAME]:file:_files'
    "(- --help)"--help'[Show help on the command rather than running it]'
    "(--help --httptrace)"--httptrace'[Trace outbound HTTP requests]'
    "(--help --localtime)"--localtime'[Display times using the local timezone]'
    "(--help --no-th-hook)"--no-th-hook'[Do not run TH1 hooks]'
    "(--help --quiet)"--quiet'[Reduce the amount of output]'
    "(--help --sqlstats)"--sqlstats'[Show SQL usage statistics when done]'
    "(--help --sqltrace)"--sqltrace'[Trace all SQL commands]'
    "(--help --sshtrace)"--sshtrace'[Trace SSH activity]'
    "(--help --ssl-identity)"--ssl-identity'[NAME Set the SSL identity to NAME]:name:'
    "(--help --systemtrace)"--systemtrace'[Trace calls to system()]'
    "(--help --user -U)"{--user,-U}'[USER Make the default user be USER]:user:($(__fossil_users))'
    "(--help --utc)"--utc'[Display times using UTC]'
    "(--help --vfs)"--vfs'[NAME Cause SQLite to use the NAME VFS]:name:'
  )

  local -a _fossil_clean_options
  _fossil_clean_options=(
    "(--help --allckouts)"--allckouts'[Check for empty directories within any checkouts]'
    "(--help --case-sensitive)"--case-sensitive'[BOOL Override case-sensitive setting]:bool:(yes no)'
    "(--help --dirsonly)"--dirsonly'[Only remove empty directories]'
    "(--help --disable-undo)"--disable-undo'[Disables use of the undo]'
    "(--help --dotfiles)"--dotfiles'[Include files beginning with a dot (".")]'
    "(--help --emptydirs)"--emptydirs'[Remove empty directories]'
    "(--help -f --force)"{-f,--force}'[Remove files without prompting]'
    "(--help -i --prompt)"{-i,--prompt}'[Prompt before removing each file]'
    "(--help -x --verily)"{-x,--verily}'[Remove everything that is not managed]'
    "(--help --clean)"--clean'[CSG Never prompt to delete files matching CSG glob pattern]:pattern:'
    "(--help --ignore)"--ignore'[CSG Ignore files matching CSG glob pattern]:pattern:'
    "(--help --keep)"--keep'[CSG Keep files matching CSG glob pattern]:pattern:'
    "(--help -n --dry-run)"{-n,--dry-run}'[Delete nothing, but display what would have been deleted]'
    "(--help --no-prompt)"--no-prompt'[Assume NO for every question]'
    "(--help --temp)"--temp'[Remove only Fossil-generated temporary files]'
    "(--help -v --verbose)"{-v,--verbose}'[Show all files as they are removed]'
  )

  local -a _fossil_rebuild_options
  _fossil_rebuild_options=(
    "(--help --analyze)"--analyze'[Run ANALYZE on the database after rebuilding]'
    "(--help --cluster)"--cluster'[Compute clusters for unclustered artifacts]'
    "(--help --compress)"--compress'[Strive to make the database as small as possible]'
    "(--help --compress-only)"--compress-only'[Skip the rebuilding step. Do --compress only]'
    "(--help --deanalyze)"--deanalyze'[Remove ANALYZE tables from the database]'
    "(--help --ifneeded)"--ifneeded'[Only do the rebuild if it would change the schema version]'
    "(--help --index)"--index'[Always add in the full-text search index]'
    "(--help --noverify)"--noverify'[Skip the verification of changes to the BLOB table]'
    "(--help --noindex)"--noindex'[Always omit the full-text search index]'
    "(--help --pagesize)"--pagesize'[N Set the database pagesize to N. (512..65536 and power of 2)]:number:'
    "(--help --quiet)"--quiet'[Only show output if there are errors]'
    "(--help --stats)"--stats'[Show artifact statistics after rebuilding]'
    "(--help --vacuum)"--vacuum'[Run VACUUM on the database after rebuilding]'
    "(--help --wal)"--wal'[Set Write-Ahead-Log journalling mode on the database]'
  )

  local -a _fossil_dbstat_options
  _fossil_dbstat_options=(
    "(--help --brief -b)"{--brief,-b}'[Only show essential elements]'
    "(--help --db-check)"--db-check'[Run "PRAGMA quick_check" on the repository database]'
    "(--help --db-verify)"--db-verify'[Run a full verification of the repository integrity]'
    "(--help --omit-version-info)"--omit-version-info'[Omit the SQLite and Fossil version information]'
  )

  local -a _fossil_diff_options
  _fossil_diff_options=(
    "(--help --binary)"--binary'[PATTERN Treat files that match the glob PATTERN as binary]:pattern:'
    "(--help --branch)"--branch'[BRANCH Show diff of all changes on BRANCH]:branch:($(__fossil_branches))'
    "(--help --brief)"--brief'[Show filenames only]'
    "(--help --checkin)"--checkin'[VERSION Show diff of all changes in VERSION]:version:'
    "(--help --command)"--command'[PROG External diff program - overrides "diff-command"]:program:'
    "(--help --context -c)"{--context,-c}'[N Use N lines of context]:number:'
    "(--help --diff-binary)"--diff-binary'[BOOL Include binary files when using external commands]:bool:(yes no)'
    "(--help --exec-abs-paths)"--exec-abs-paths'[Force absolute path names with external commands]'
    "(--help --exec-rel-paths)"--exec-rel-paths'[Force relative path names with external commands]'
    "(--help --from -r)"{--from,-r}'[VERSION Select VERSION as source for the diff]:version:'
    "(--help --internal -i)"{--internal,-i}'[Use internal diff logic]'
    "(--help --new-file -N)"{--new-file,-N}'[Show complete text of added and deleted files]'
    "(--help --numstat)"--numstat'[Show only the number of lines delete and added]'
    "(--help --side-by-side -y)"{--side-by-side,-y}'[Side-by-side diff]'
    "(--help --strip-trailing-cr)"--strip-trailing-cr'[Strip trailing CR]'
    "(--help --tclsh)"--tclsh'[PATH Tcl/Tk used for --tk (default: "tclsh")]'
    "(--help --tk)"--tk'[Launch a Tcl/Tk GUI for display]'
    "(--help --to)"--to'[VERSION Select VERSION as target for the diff]:version:'
    "(--help --undo)"--undo'[Diff against the "undo" buffer]'
    "(--help --unified)"--unified'[Unified diff]'
    "(--help -v --verbose)"{-v,--verbose}'[Output complete text of added or deleted files]'
    "(--help -w --ignore-all-space)"{-w,--ignore-all-space}'[Ignore white space when comparing lines]'
    "(--help -W --width)"{-W,--width}'[NUM Width of lines in side-by-side diff]:number:'
    "(--help -Z --ignore-trailing-space)"{-Z,--ignore-trailing-space}'[Ignore changes to end-of-line whitespace]'
  )

  local -a _fossil_extras_options
  _fossil_extras_options=(
    "(--help --abs-paths)"--abs-paths'[Display absolute pathnames]'
    "(--help --case-sensitive)"--case-sensitive'[BOOL Override case-sensitive setting]:bool:(yes no)'
    "(--help --dotfiles)"--dotfiles'[Include files beginning with a dot (".")]'
    "(--help --header)"--header'[Identify the repository if there are extras]'
    "(--help --ignore)"--ignore'[CSG Ignore files matching patterns from the argument]:pattern:'
    "(--help --rel-paths)"--rel-paths'[Display pathnames relative to the current working]'
  )

  local -a _fossil_server_options
  _fossil_server_options=(
    "(--help --baseurl)"--baseurl'[URL Use URL as the base]:url:__fossil_urls'
    "(--help --create)"--create'[Create a new REPOSITORY if it does not already exist]'
    "(--help --extroot)"--extroot'[DIR Document root for the /ext extension mechanism]:directory:_files -/'
    "(--help --files)"--files'[GLOBLIST Comma-separated list of glob patterns for static files]:pattern:'
    "(--help --localauth)"--localauth'[Enable automatic login for requests from localhost]'
    "(--help --localhost)"--localhost'[Listen on 126.0.0.1 only]'
    "(--help --https)"--https'[Input passes through a reverse HTTPS->HTTP proxy]'
    "(--help --jsmode)"--jsmode'[MODE Determine how JavaScript is delivered with pages]:mode:(inline separate bundled)'
    "(--help --max-latency)"--max-latency'[N Do not let any single HTTP request run for more than N seconds]:number:'
    "(--help --nocompress)"--nocompress'[Do not compress HTTP replies]'
    "(--help --nojail)"--nojail'[Drop root privileges but do not enter the chroot jail]'
    "(--help --nossl)"--nossl'[Signal that no SSL connections are available]'
    "(--help --notfound)"--notfound'[URL Redirect]:url:__fossil_urls'
    "(--help --page)"--page'[PAGE Start "ui" on PAGE. ex: --page "timeline?y=ci"]:number:'
    "(--help -P --port)"{-P,--port}'[TCPPORT Listen to request on port TCPPORT]:number:'
    "(--help --th-trace)"--th-trace'[Trace TH0 execution (for debugging purposes)]'
    "(--help --repolist)"--repolist'[If REPOSITORY is dir, URL "/" lists repos]'
    "(--help --scgi)"--scgi'[Accept SCGI rather than HTTP]'
    "(--help --skin)"--skin'[LABEL Use override skin LABEL]:label:'
    "(--help --usepidkey)"--usepidkey'[Use saved encryption key from parent process]'
  )

  _arguments -C           \
    ${_common_options[@]} \
    '1:command:->command' \
    '*::args:->args'

  case $state in
    (command)
      if [[ $line =~ '^te' ]]; then
        _arguments '*:test commands:($(__fossil_test_commands))'
      else
        _arguments '*:commands:($(__fossil_commands))'
      fi
      ;;
    (args)
      if [[ $line[1] =~ '^test-' ]]; then
        __fossil_complete_test_commands
        return 0
      fi

      case $line[1] in
        (3-way-merge)
          _arguments                            \
            '(- *)'--help'[Show help and exit]' \
            '*:files:_files'

          ;;
        (add)
          _arguments                                                                                              \
            "(--help --case-sensitive)"--case-sensitive'[BOOL Override the case-sensitive setting]:bool:(yes no)' \
            "(--help --dotfiles)"--dotfiles'[include files beginning with a dot (".")]'                           \
            "(--help -f --force)"{-f,--force}'[Add files without prompting]'                                      \
            "(--help --ignore)"--ignore'[CSG Ignore unmanaged files matching Comma Separated Glob]:pattern:'      \
            "(--help --clean)"--clean'[CSG Also ignore files matching Comma Separated Glob]:pattern:'             \
            "(--help --reset)"--reset'[Reset the ADDED state of a checkout]'                                      \
            "(--help -v --verbose)"{-v,--verbose}'[Outputs information about each --reset file]'                  \
            "(--help -n --dry-run)"{-n,--dry-run}'[Display instead of run actions]'                               \
            '(- *)'--help'[Show help and exit]'                                                                   \
            '*:files:_files'

          ;;
        (addremove)
          _arguments                                                                                              \
            "(--help --case-sensitive)"--case-sensitive'[BOOL Override the case-sensitive setting]:bool:(yes no)' \
            "(--help --dotfiles)"--dotfiles'[Include files beginning with a dot (".")]'                           \
            "(--help --ignore)"--ignore'[CSG Ignore unmanaged files matching Comma Separated Glob]:pattern:'      \
            "(--help --clean)"--clean'[CSG Also ignore files matching Comma Separated Glob]:pattern:'             \
            "(--help -n --dry-run)"{-n,--dry-run}'[If given, display instead of run actions]'                     \
            "(--help --reset)"--reset'[Reset the ADDED/DELETED state of a checkout]'                              \
            "(--help --verbose -v)"{--verbose,-v}'[Outputs information about each --reset file]'                  \
            '(- *)'--help'[Show help and exit]'                                                                   \
            '*:files:_files'

          ;;
        (alerts)
          __fossil_alerts

          ;;
        (all)
          __fossil_all

          ;;
        (amend)
          _arguments                                                                                                             \
            ':hash:'                                                                                                             \
            "(--help --author)"--author'[USER Make USER the author for check-in]:user:($(__fossil_users))'                       \
            "(--help -m --comment)"{-m,--comment}'[COMMENT Make COMMENT the check-in comment]:comment:'                          \
            "(--help -M --message-file)"{-M,--message-file}'[FILE Read the amended comment from FILE]:file:_files'               \
            "(--help -e --edit-comment)"{-e,--edit-comment}'[Launch editor to revise comment]'                                   \
            "(--help --date)"--date'[DATETIME Make DATETIME the check-in time]:datetime:(now)'                                   \
            "(--help --bgcolor)"--bgcolor'[COLOR Apply COLOR to this check-in]:color:'                                           \
            "(--help --branchcolor)"--branchcolor'[COLOR Apply and propagate COLOR to the branch]:color:'                        \
            "(--help --tag)"--tag'[TAG Add new TAG to this check-in]:tag:($(__fossil_tags))'                                     \
            "(--help --cancel)"--cancel'[TAG Cancel TAG from this check-in]:tag:($(__fossil_tags))'                              \
            "(--help --branch)"--branch'[NAME Make this check-in the start of branch NAME]:name:($(__fossil_branches))'          \
            "(--help --hide)"--hide'[Hide branch starting from this check-in]'                                                   \
            "(--help --close)"--close'[Mark this "leaf" as closed]'                                                              \
            "(--help -n --dry-run)"{-n,--dry-run}'[Print control artifact, but make no changes]'                                 \
            "(--help --date-override)"--date-override'[DATETIME Set the change time on the control artifact]:datetime:(now)'     \
            "(--help --user-override)"--user-override'[USER Set the user name on the control artifact]:user:($(__fossil_users))' \
            '(- *)'--help'[Show help and exit]'

          ;;
        (annotate|blame|praise)
          _arguments                                                                                              \
            "(--help --filevers)"--filevers'[Show file version numbers]'                                          \
            "(--help -r --revision)"{-r,--revision}'[VERSION The specific check-in containing the file]:version:' \
            "(--help -l --log)"{-l,--log}'[List all versions analyzed]'                                           \
            "(--help -n --limit)"{-n,--limit}'[LIMIT Limit versions]:limit:(none)'                                \
            "(--help -o --origin)"{-o,--origin}'[VERSION The origin check-in]:version:'                           \
            "(--help -w --ignore-all-space)"{-w,--ignore-all-space}'[Ignore white space when comparing lines]'    \
            "(--help -Z --ignore-trailing-space)"{-Z,--ignore-trailing-space}'[Ignore whitespace at line end]'    \
            '(- *)'--help'[Show help and exit]'                                                                   \
            '1:file:_files'

          ;;
        (artifact)
          _arguments                                                                                                               \
            "(--help -R --repository)"{-R,--repository}'[FILE Extract artifacts from repository FILE]:fossils:($(__fossil_repos))' \
            '(- *)'--help'[Show help and exit]'                                                                                    \
            '1:artifact id:'                                                                                                       \
            '2::output file:_files'

          ;;
        (attachment)
          _arguments                                                                                         \
            "(--help -t --technote)"{-t,--technote}'[DATETIME The timestamp of the technote]:datetime:(now)' \
            "(--help -t --technote)"{-t,--technote}'[TECHNOTE-ID The technote to be updated]:technote-id:'   \
            '(- *)'--help'[Show help and exit]'                                                              \
            '1:what:(add)'                                                                                   \
            '::pagename:($(__fossil_wiki_pages))'                                                           \
            ':file:_files'

          ;;
        (backoffice)
          _arguments                                                                                       \
            "(--help --debug)"--debug'[Show what this command is doing]'                                   \
            "(--help --logfile)"--logfile'[FILE Append a log of backoffice actions onto FILE]:file:_files' \
            "(--help --min)"--min'[N Invoke backoffice at least once every N seconds]:number:'             \
            "(--help --poll)"--poll'[N Polling frequency]:number:'                                         \
            "(--help --trace)"--trace'[Enable debugging output on stderr]'                                 \
            "(--help --nodelay)"--nodelay'[Do not queue up or wait for a backoffice job]'                  \
            "(--help --nolease)"--nolease'[Always run backoffice]'                                         \
            '(- *)'--help'[Show help and exit]'                                                            \
            '*:fossils:($(__fossil_repos))'

          ;;
        (backup)
          _arguments                                                                                 \
            "(--help --overwrite)"--overwrite'[OK to overwrite an existing file]'                    \
            "(--help -R)"-R'[NAME Filename of the repository to backup]:fossils:($(__fossil_repos))' \
            '(- *)'--help'[Show help and exit]'                                                      \
            '1:file:_files'

          ;;
        (bisect)
          __fossil_bisect

          ;;
        (branch)
          __fossil_branch

          ;;
        (bundle)
          __fossil_bundle

          ;;
        (cache)
          __fossil_cache

          ;;
        (cat)
          _arguments                                                                                                               \
            "(--help -R --repository)"{-R,--repository}'[FILE Extract artifacts from repository FILE]:fossils:($(__fossil_repos))' \
            "(--help -r)"-r'[VERSION The specific check-in containing the file]:version:'                                          \
            '(- *)'--help'[Show help and exit]'                                                                                    \
            '*:files:_files'

          ;;
        (cgi)
          _arguments                            \
            '(- *)'--help'[Show help and exit]' \
            '::cgi:'                            \
            ':file:_files'

          ;;
        (changes|status)
          _arguments                                                                                        \
          "(--help --abs-paths)"--abs-paths'[Display absolute pathnames]'                                   \
          "(--help --rel-paths)"--rel-paths'[Display pathnames relative to the current directory]'          \
          "(--help --hash)"--hash'[Verify file status using hashing]'                                       \
          "(--help --case-sensitive)"--case-sensitive'[BOOL Override case-sensitive setting]:bool:(yes no)' \
          "(--help --dotfiles)"--dotfiles'[Include unmanaged files beginning with a dot]'                   \
          "(--help --ignore)"--ignore'[CSG Ignore unmanaged files matching CSG glob patterns]:pattern:'     \
          "(--help --header)"--header'[Identify the repository if report is non-empty.]'                    \
          "(--help -v --verbose)"{-v,--verbose}'[Say "(none)" if the change report is empty]'               \
          "(--help --classify)"--classify'[Start each line with the file'"'"'s change type]'                \
          "(--help --no-classify)"--no-classify'[Do not print file change types]'                           \
          "(--help --edited)"--edited'[Display edited, merged, and conflicted files]'                       \
          "(--help --updated)"--updated'[Display files updated by merge/integrate]'                         \
          "(--help --changed)"--changed'[Combination of --edited and --updated]'                            \
          "(--help --missing)"--missing'[Display missing files]'                                            \
          "(--help --added)"--added'[Display added files]'                                                  \
          "(--help --deleted)"--deleted'[Display deleted files]'                                            \
          "(--help --renamed)"--renamed'[Display renamed files]'                                            \
          "(--help --conflict)"--conflict'[Display files having merge conflicts]'                           \
          "(--help --meta)"--meta'[Display files with metadata changes]'                                    \
          "(--help --unchanged)"--unchanged'[Display unchanged files]'                                      \
          "(--help --all)"--all'[Display all managed files]'                                                \
          "(--help --extra)"--extra'[Display unmanaged files]'                                              \
          "(--help --differ)"--differ'[Display modified and extra files]'                                   \
          "(--help --merge)"--merge'[Display merge contributors]'                                           \
          "(--help --no-merge)"--no-merge'[Do not display merge contributors]'                              \
          '(- *)'--help'[Show help and exit]'                                                               \
          '*:files:_files'

          ;;
        (checkout|co)
          _arguments                                                                             \
          "(--help --force)"--force'[Ignore edited files in the current checkout]'               \
          "(--help --keep)"--keep'[Only update the manifest and manifest.uuid files]'            \
          "(--help --force-missing)"--force-missing'[Force checkout even if content is missing]' \
          "(--help --setmtime)"--setmtime'[Set timestamps of all files to match their SCM-side]' \
          '(- *)'--help'[Show help and exit]'                                                    \
          '*:files:_files'

          ;;
        (ci|commit)
          _arguments                                                                                                         \
          "(--help --allow-conflict)"--allow-conflict'[Allow unresolved merge conflicts]'                                    \
          "(--help --allow-empty)"--allow-empty'[Allow a commit with no changes]'                                            \
          "(--help --allow-fork)"--allow-fork'[Allow the commit to fork]'                                                    \
          "(--help --allow-older)"--allow-older'[Allow a commit older than its ancestor]'                                    \
          "(--help --baseline)"--baseline'[Use a baseline manifest in the commit process]'                                   \
          "(--help --bgcolor)"--bgcolor'[COLOR Apply COLOR to this one check-in only]:color:'                                \
          "(--help --branch)"--branch'[NEW-BRANCH-NAME check in to this new branch]:new branch:'                             \
          "(--help --branchcolor)"--branchcolor'[COLOR Apply given COLOR to the branch]:color:'                              \
          "(--help --close)"--close'[Close the branch being committed]'                                                      \
          "(--help --date-override)"--date-override'[DATETIME DATE to use instead of '"'"'now'"'"']:datetime:'               \
          "(--help --delta)"--delta'[Use a delta manifest in the commit process]'                                            \
          "(--help --hash)"--hash'[Verify file status using hashing]'                                                        \
          "(--help --integrate)"--integrate'[Close all merged-in branches]'                                                  \
          "(--help -m --comment)"{-m,--comment}'[COMMENT Use COMMENT as commit comment]:comment:'                            \
          "(--help -M --message-file)"{-M,--message-file}'[FILE Read the commit comment from given file]:file:_files'        \
          "(--help --mimetype)"--mimetype'[MIMETYPE Mimetype of check-in comment]:mimetype:'                                 \
          "(--help -n --dry-run)"{-n,--dry-run}'[If given, display instead of run actions]'                                  \
          "(--help --no-prompt)"--no-prompt'[Assume NO for every question]'                                                  \
          "(--help --no-warnings)"--no-warnings'[Omit all warnings about file contents]'                                     \
          "(--help --no-verify)"--no-verify'[Do not run before-commit hooks]'                                                \
          "(--help --nosign)"--nosign'[Do not attempt to sign this commit with gpg]'                                         \
          "(--help --override-lock)"--override-lock'[Allow a check-in even though parent is locked]'                         \
          "(--help --private)"--private'[Do not sync changes and their descendants]'                                         \
          "(--help --tag)"--tag'[TAG-NAME Assign given tag TAG-NAME to the check-in]:tag:($(__fossil_tags))'                 \
          "(--help --trace)"--trace'[Debug tracing]'                                                                         \
          "(--help --user-override)"--user-override'[USER Use USER instead of the current default]:user:($(__fossil_users))' \
          '(- *)'--help'[Show help and exit]'                                                                                \
          '*:files:_files'

          ;;
        (clean)
          _arguments                    \
            ${_fossil_clean_options[@]} \
            '*:files:_files'

          ;;
        (clone)
          _arguments                                                                                                         \
            "(--help --admin-user -A)"{--admin-user,-A}'[USERNAME Make USERNAME the administrator]:user:($(__fossil_users))' \
            "(--help --httpauth -B)"{--httpauth,-B}'[USER:PASS Add HTTP Basic Authorization to requests]:user pass:'         \
            "(--help --nocompress)"--nocompress'[Omit extra delta compression]'                                              \
            "(--help --once)"--once'[Don'"'"'t remember the URI]'                                                            \
            "(--help --private)"--private'[Also clone private branches]'                                                     \
            "(--help --save-http-password)"--save-http-password'[Remember the HTTP password without asking]'                 \
            "(--help --ssh-command -c)"{--ssh-command,-c}'[SSH Use SSH as the "ssh" command]:ssh command:'                   \
            "(--help --ssl-identity)"--ssl-identity'[FILENAME Use the SSL identity if requested by the server]:file:_files'  \
            "(--help -u --unversioned)"{-u,--unversioned}'[Also sync unversioned content]'                                   \
            "(--help -v --verbose)"{-v,--verbose}'[Show more statistics in output]'                                          \
            '(- *)'--help'[Show help and exit]'                                                                              \
            '1:uri:__fossil_urls'                                                                                            \
            '2:file:_files'

          ;;
        (close)
          _arguments                                                                      \
          "(--help --force -f)"{--force,-f}'[Close a check out with uncommitted changes]' \
          '(- *)'--help'[Show help and exit]'

          ;;
        (configuration)
          __fossil_configuration

          ;;
        (dbstat)
          _arguments                   \
          ${_fossil_dbstat_options[@]} \
            '(- *)'--help'[Show help and exit]'

          ;;
        (deconstruct)
          _arguments                                                                                                           \
            "(--help -R --repository)"{-R,--repository}'[REPOSITORY Deconstruct given REPOSITORY]:fossils:($(__fossil_repos))' \
            "(--help -K --keep-rid1)"{-K,--keep-rid1}'[Save the filename of the artifact with RID=1]'                          \
            "(--help -L --prefixlength)"{-L,--prefixlength}'[N Set the length of the names of the DESTINATION]:number:'        \
            "(--help --private)"--private'[Include private artifacts]'                                                         \
            "(--help -P --keep-private)"{-P,--keep-private}'[Save the list of private artifacts to .private]'                  \
            '(- *)'--help'[Show help and exit]'                                                                                \
            '1:destination:_files -/'

          ;;
        (delete|forget|rm)
          _arguments                                                                                              \
            "(--help --soft)"--soft'[Skip removing files from the checkout]'                                      \
            "(--help --hard)"--hard'[Remove files from the checkout]'                                             \
            "(--help --case-sensitive)"--case-sensitive'[BOOL Override the case-sensitive setting]:bool:(yes no)' \
            "(--help -n --dry-run)"{-n,--dry-run}'[If given, display instead of run actions]'                     \
            "(--help --reset)"--reset'[Reset the DELETED state of a checkout]'                                    \
            "(--help --verbose -v)"{--verbose,-v}'[Outputs information about each --reset file]'                  \
            '(- *)'--help'[Show help and exit]'                                                                   \
            '*:files:_files'

          ;;
        (descendants)
          _arguments                                                                                                          \
            "(--help -R --repository)"{-R,--repository}'[FILE Extract info from repository FILE]:fossils:($(__fossil_repos))' \
            "(--help -W --width)"{-W,--width}'[NUM Width of lines]:number:'                                                   \
            '(- *)'--help'[Show help and exit]'                                                                               \
            '1::check-in:'

          ;;
        (diff|gdiff)
          _arguments                            \
            ${_fossil_diff_options[@]}          \
            '(- *)'--help'[Show help and exit]' \
            '*:files:_files'

          ;;
        (export)
          _arguments \
          '(- *)'--help'[Show help and exit]'

          ;;
        (extras)
          _arguments                            \
            ${_fossil_extras_options[@]}        \
            '(- *)'--help'[Show help and exit]' \
            '*:files:_files -/'

          ;;
        (finfo)
          _arguments                                                                                                   \
          "(--help -b --brief)"{-b,--brief}'[Display a brief (one line / revision) summary]'                           \
          "(--help --case-sensitive)"--case-sensitive'[BOOL Enable or disable case-sensitive filenames]:bool:(yes no)' \
          "(--help -l --log)"{-l,--log}'[Select log mode (the default)]'                                               \
          "(--help -n --limit)"{-n,--limit}'[N Display only the first N changes]:number:'                              \
          "(--help --offset)"--offset'[P Skip P changes]:number:'                                                      \
          "(--help -p --print)"{-p,--print}'[Select print mode]'                                                       \
          "(--help -r --revision)"{-r,--revision}'[R Print the given revision]:version:'                               \
          "(--help -s --status)"{-s,--status}'[Select status mode (print a status indicator for FILE)]'                \
          "(--help -W --width)"{-W,--width}'[NUM Width of lines]:number:'                                              \
          '(- *)'--help'[Show help and exit]'                                                                          \
          '1:file:_files'

          ;;
        (fts-config)
          __fossil_fts_config

          ;;
        (git)
          __fossil_git

          ;;
        (grep)
          _arguments                                                                                   \
          "(--help -c --count)"{-c,--count}'[Suppress normal output; print count of files]'            \
          "(--help -i --ignore-case)"{-i,--ignore-case}'[Ignore case]'                                 \
          "(--help -l --files-with-matches)"{-l,--files-with-matches}'[List only hash for each match]' \
          "(--help --once)"--once'[Stop searching after the first match]'                              \
          "(--help -s --no-messages)"{-s,--no-messages}'[Suppress error messages]'                     \
          "(--help -v --invert-match)"{-v,--invert-match}'[Invert the sense of matching]'              \
          "(--help --verbose)"--verbose'[Show each file as it is analyzed]'                            \
          '(- *)'--help'[Show help and exit]'                                                          \
          '1:pattern:'                                                                                 \
          '*:files:_files'

          ;;
        (hash-policy)
          _arguments                            \
            '(- *)'--help'[Show help and exit]' \
            '1::policy:(sha1 auto sha3 sha3-only shun-sha1)'

          ;;
        (help)
          _arguments                                                                \
          "(- :)"{-a,--all}'[List both common and auxiliary commands]'              \
          "(- :)"{-o,--options}'[List command-line options common to all commands]' \
          "(- :)"{-s,--setting}'[List setting names]'                               \
          "(- :)"{-t,--test}'[List unsupported "test" commands]'                    \
          "(- :)"{-x,--aux}'[List only auxiliary commands]'                         \
          "(- :)"{-w,--www}'[List all web pages]'                                   \
          "(- :):all commands:($(__fossil_all_commands))"                           \
          "(- *)"--html'[Format output as HTML rather than plain text]'

          ;;
        (hook)
          __fossil_hook

          ;;
        (http)
          _arguments                                                                                                          \
          "(--help --baseurl)"--baseurl'[URL Base URL (useful with reverse proxies)]:url:__fossil_urls'                       \
          "(--help --extroot)"--extroot'[DIR Document root for the /ext extension mechanism]:file:_files -/'                  \
          "(--help --files)"--files'[GLOB Comma-separate glob patterns for static file to serve]:pattern:'                    \
          "(--help --host)"--host'[NAME Specify hostname of the server]:name:'                                                \
          "(--help --https)"--https'[Signal a request coming in via https]'                                                   \
          "(--help --in)"--in'[FILE Take input from FILE instead of standard input]:file:_files'                              \
          "(--help --ipaddr)"--ipaddr'[ADDR Assume the request comes from the given IP address]:address:'                     \
          "(--help --jsmode)"--jsmode'[MODE Determine how JavaScript is delivered with pages]:mode:(inline separate bundled)' \
          "(--help --localauth)"--localauth'[Enable automatic login for local connections]'                                   \
          "(--help --nocompress)"--nocompress'[Do not compress HTTP replies]'                                                 \
          "(--help --nodelay)"--nodelay'[Omit backoffice processing if it would delay process exit]'                          \
          "(--help --nojail)"--nojail'[Drop root privilege but do not enter the chroot jail]'                                 \
          "(--help --nossl)"--nossl'[Signal that no SSL connections are available]'                                           \
          "(--help --notfound)"--notfound'[URL Use URL as "HTTP 404, object not found" page]:url:__fossil_urls'               \
          "(--help --out)"--out'[FILE Write results to FILE instead of to standard output]:file:_files'                       \
          "(--help --repolist)"--repolist'[If REPOSITORY is directory, URL "/" lists all repos]'                              \
          "(--help --scgi)"--scgi'[Interpret input as SCGI rather than HTTP]'                                                 \
          "(--help --skin)"--skin'[LABEL Use override skin LABEL]:label:'                                                     \
          "(--help --th-trace)"--th-trace'[Trace TH1 execution (for debugging purposes)]'                                     \
          "(--help --usepidkey)"--usepidkey'[Use saved encryption key from parent process]'                                   \
          '(- *)'--help'[Show help and exit]'                                                                                 \
          '1::fossils:_files'

          ;;
        (import)
          _arguments                                                                                               \
          "(--help --git)"--git'[Import from the git-fast-export file format (default)]'                           \
          "(--help --import-marks)"--import-marks'[FILE Restore marks table from FILE]:file:_files'                \
          "(--help --export-marks)"--export-marks'[FILE Save marks table to FILE]:files:_files'                    \
          "(--help --rename-master)"--rename-master'[NAME Renames the master branch to NAME]:name:'                \
          "(--help --use-author)"--use-author'[Uses author as the committer]:user:($(__fossil_users))'             \
          "(--help --svn)"--svn'[Import from the svnadmin-dump file format]'                                       \
          "(--help --trunk)"--trunk'[FOLDER Name of trunk folder]:file:_files -/'                                  \
          "(--help --branches)"--branches'[FOLDER Name of branches folder]:file:_files -/'                         \
          "(--help --tags)"--tags'[FOLDER Name of tags folder]:file:_files -/'                                     \
          "(--help --base)"--base'[PATH Path to project root in repository]:file:_files'                           \
          "(--help --flat)"--flat'[The whole dump is a single branch]'                                             \
          "(--help --rev-tags)"--rev-tags'[Tag each revision, implied by -i]'                                      \
          "(--help --no-rev-tags)"--no-rev-tags'[Disables tagging effect of -i]'                                   \
          "(--help --rename-rev)"--rename-rev'[PAT Rev tag names, default "svn-rev-%"]:pattern:'                   \
          "(--help --ignore-tree)"--ignore-tree'[DIR Ignores subtree rooted at DIR]:file:_files -/'                \
          "(--help -i --incremental)"{-i,--incremental}'[Allow importing into an existing repository]'             \
          "(--help -f --force)"{-f,--force}'[Overwrite repository if already exists]'                              \
          "(--help -q --quiet)"{-q,--quiet}'[Omit progress output]'                                                \
          "(--help --no-rebuild)"--no-rebuild'[Skip the "rebuilding metadata" step]'                               \
          "(--help --no-vacuum)"--no-vacuum'[Skip the final VACUUM of the database file]'                          \
          "(--help --rename-trunk)"--rename-trunk'[NAME use NAME as name of imported trunk branch]:name:'          \
          "(--help --rename-branch)"--rename-branch'[PAT Rename all branch names using PAT pattern]:pattern:'      \
          "(--help --rename-tag)"--rename-tag'[PAT Rename all tag names using PAT pattern]:pattern:'               \
          "(--help --admin-user -A)"{--admin-user,-A}'[NAME Use NAME for the admin user]:user:($(__fossil_users))' \
          '(- *)'--help'[Show help and exit]'                                                                      \
          '*:files:_files'

          ;;
        (info)
          _arguments                                                                                                          \
            "(--help -R --repository)"{-R,--repository}'[FILE Extract info from repository FILE]:fossils:($(__fossil_repos))' \
            "(--help -v --verbose)"{-v,--verbose}'[Show extra information about repositories]'                                \
            '(- *)'--help'[Show help and exit]'                                                                               \
            '1:fossils:($(__fossil_repos))'

          ;;
        (init|new)
          _arguments                                                                                                           \
          "(--help --template)"--template'[FILE Copy settings from repository file]:file:_files'                               \
          "(--help --admin-user -A)"{--admin-user,-A}'[USERNAME Select given USERNAME as admin user]:user:($(__fossil_users))' \
          "(--help --date-override)"--date-override'[DATETIME Use DATETIME as time of the initial check-in]:datetime:(now)'    \
          "(--help --sha1)"--sha1'[Use an initial hash policy of "sha1"]'                                                      \
          '(- *)'--help'[Show help and exit]'                                                                                  \
          '1:file:_files'

          ;;
        (json)
          __fossil_json

          ;;
        (leaves)
          _arguments                                                                                           \
            "(--help -a --all)"{-a,--all}'[Show ALL leaves]'                                                   \
            "(--help --bybranch)"--bybranch'[Order output by branch name]'                                     \
            "(--help -c --closed)"{-c,--closed}'[Show only closed leaves]'                                     \
            "(--help -m --multiple)"{-m,--multiple}'[Show only cases with multiple leaves on a single branch]' \
            "(--help --recompute)"--recompute'[Recompute the "leaf" table in the repository DB]'               \
            "(--help -W --width)"{-W,--width}'[NUM Width of lines (default is to auto-detect)]:number:'        \
            '(- *)'--help'[Show help and exit]'

          ;;
        (login-group)
          __fossil_login_group

          ;;
        (ls)
          _arguments                                                                                                          \
            "(--help --age)"--age'[Show when each file was committed]'                                                        \
            "(--help -v --verbose)"{-v,--verbose}'[Provide extra information about each file]'                                \
            "(--help -t)"-t'[Sort output in time order]'                                                                      \
            "(--help -r)"-r'[VERSION The specific check-in to list]:version:'                                                 \
            "(--help -R --repository)"{-R,--repository}'[FILE Extract info from repository FILE]:fossils:($(__fossil_repos))' \
            '(- *)'--help'[Show help and exit]'                                                                               \
            '*:files:_files'

          ;;
        (md5sum)
          _arguments                            \
            '(- *)'--help'[Show help and exit]' \
            '*:files:_files'

          ;;
        (merge)
          _arguments                                                                                                 \
            "(--help --backout)"--backout'[Do a reverse cherrypick merge against VERSION]'                           \
            "(--help --baseline)"--baseline'[BASELINE Use BASELINE as the "pivot" of the merge instead]:version:'    \
            "(--help --binary)"--binary'[GLOBPATTERN Treat files that match GLOBPATTERN as binary]:pattern:'         \
            "(--help --case-sensitive)"--case-sensitive'[BOOL Override the case-sensitive setting]:bool:(yes no)'    \
            "(--help --cherrypick)"--cherrypick'[Do a cherrypick merge VERSION into the current checkout]'           \
            "(--help -f --force)"{-f,--force}'[Force the merge even if it would be a no-op]'                         \
            "(--help --force-missing)"--force-missing'[Force the merge even if there is missing content]'            \
            "(--help --integrate)"--integrate'[Merged branch will be closed when committing]'                        \
            "(--help -K --keep-merge-files)"{-K,--keep-merge-files}'[On merge conflict, retain the temporary files]' \
            "(--help -n --dry-run)"{-n,--dry-run}'[If given, display instead of run actions]'                        \
            "(--help -v --verbose)"{-v,--verbose}'[Show additional details of the merge]'                            \
            '(- *)'--help'[Show help and exit]'                                                                      \
            '1:version:'

          ;;
        (mv|rename)
          _arguments                                                                                              \
            "(--help --soft)"--soft'[Skip moving files within the checkout]'                                      \
            "(--help --hard)"--hard'[Move files within the checkout]'                                             \
            "(--help --case-sensitive)"--case-sensitive'[BOOL Override the case-sensitive setting]:bool:(yes no)' \
            "(--help -n --dry-run)"{-n,--dry-run}'[If given, display instead of run actions]'                     \
            '(- *)'--help'[Show help and exit]'                                                                   \
            '*:files:_files'

          ;;
        (open)
          _arguments                                                                                     \
            "(--help --empty)"--empty'[Initialize checkout as being empty, but still connected]'         \
            "(--help --force)"--force'[Continue even if the directory is not empty]'                     \
            "(--help --force-missing)"--force-missing'[Force opening a repository with missing content]' \
            "(--help --keep)"--keep'[Only modify the manifest and manifest.uuid files]'                  \
            "(--help --nested)"--nested'[Allow opening a repository inside an opened checkout]'          \
            "(--help --repodir)"--repodir'[DIR Store the clone in DIR]:directory:_files -/'              \
            "(--help --setmtime)"--setmtime'[Set timestamps of all files to match their SCM-side times]' \
            "(--help --workdir)"--workdir'[DIR Use DIR as the working directory]:directory:_files -/'    \
            '(- *)'--help'[Show help and exit]'                                                          \
            '1:fossils:($(__fossil_repos))'                                                              \
            '::version:'

          ;;
        (pop3d)
          _arguments                                                                           \
            "(--help --logdir)"--logdir'[DIR Create log files inside DIR]:directory:_files -/' \
            '(- *)'--help'[Show help and exit]'                                                \
            '1:fossils:($(__fossil_repos))'

          ;;
        (publish)
          _arguments                                                                              \
            '(--help --only)'--only'[Publish only the specific artifacts identified by the tags]' \
            '(- *)'--help'[Show help and exit]'                                                   \
            '*:tags:($(__fossil_tags))'

          ;;
        (pull)
          _arguments                                                                                                      \
            "(--help -B --httpauth)"{-B,--httpauth}'[USER:PASS Credentials for the simple HTTP auth protocol]:user pass:' \
            "(--help --from-parent-project)"--from-parent-project'[Pull content from the parent project]'                 \
            "(--help --ipv4)"--ipv4'[Use only IPv4, not IPv6]'                                                            \
            "(--help --once)"--once'[Do not remember URL for subsequent syncs]'                                           \
            "(--help --private)"--private'[Pull private branches too]'                                                    \
            "(--help --project-code)"--project-code'[CODE Use CODE as the project code]:project code:'                    \
            "(--help --proxy)"--proxy'[PROXY Use the specified HTTP proxy]:proxy:'                                        \
            "(--help -R --repository)"{-R,--repository}'[REPO Local repository to pull into]:fossils:($(__fossil_repos))' \
            "(--help --ssl-identity)"--ssl-identity'[FILE Local SSL credentials]:ssl credentials:'                        \
            "(--help --ssh-command)"--ssh-command'[SSH Use SSH as the "ssh" command]:ssh command:'                        \
            "(--help -v --verbose)"{-v,--verbose}'[Additional (debugging) output]'                                        \
            "(--help --verily)"--verily'[Exchange extra information with the remote]'                                     \
            '(- *)'--help'[Show help and exit]'                                                                           \
            '1:url:__fossil_urls'

          ;;
        (purge)
          __fossil_purge

          ;;
        (push)
          _arguments                                                                                                      \
            "(--help -B --httpauth)"{-B,--httpauth}'[USER:PASS Credentials for the simple HTTP auth protocol]:user pass:' \
            "(--help --ipv4)"--ipv4'[Use only IPv4, not IPv6]'                                                            \
            "(--help --once)"--once'[Do not remember URL for subsequent syncs]'                                           \
            "(--help --proxy)"--proxy'[PROXY Use the specified HTTP proxy]'                                               \
            "(--help --private)"--private'[Push private branches too]'                                                    \
            "(--help -R --repository)"{-R,--repository}'[REPO Local repository to push from]:fossils:($(__fossil_repos))' \
            "(--help --ssl-identity)"--ssl-identity'[FILE Local SSL credentials]:ssl credentials:'                        \
            "(--help --ssh-command)"--ssh-command'[SSH Use SSH as the "ssh" command]:ssh command:'                        \
            "(--help -v --verbose)"{-v,--verbose}'[Additional (debugging) output]'                                        \
            "(--help --verily)"--verily'[Exchange extra information with the remote]'                                     \
            '(- *)'--help'[Show help and exit]'                                                                           \
            '1::url:__fossil_urls'

          ;;
        (rebuild)
          _arguments                                                                           \
            ${_fossil_rebuild_options[@]}                                                      \
            "(--help --force)"--force'[Force the rebuild to complete even if errors are seen]' \
            "(--help --randomize)"--randomize'[Scan artifacts in a random order]'              \
            '(- *)'--help'[Show help and exit]'                                                \
            '1:fossils:($(__fossil_repos))'

          ;;
        (reconstruct)
          _arguments                                                                                            \
            "(--help -K --keep-rid1)"{-K,--keep-rid1}'[Read the filename of the artifact with RID=1 from .rid]' \
            "(--help -P --keep-private)"{-P,--keep-private}'[Mark the artifacts listed in .private as private]' \
            '(- *)'--help'[Show help and exit]'                                                                 \
            '1:file:_files'                                                                                     \
            '2:directory:_files -/'

          ;;
        (redo|undo)
          _arguments                                                                                 \
            "(--help -n --dry-run)"{-n,--dry-run}'[Do not make changes but show what would be done]' \
            '(- *)'--help'[Show help and exit]'                                                      \
            '*:files:_files'

          ;;
        (remote|remote-url)
          __fossil_remote

          ;;
        (reparent)
          _arguments                                                                                                             \
            "(--help --test)"--test'[Make database entries but do not add the tag artifact]'                                     \
            "(--help -n --dryrun)"{-n,--dryrun}'[Do not actually change the database]'                                           \
            "(--help --date-override)"--date-override'[DATETIME Set the change time on the control artifact]:datetime:'          \
            "(--help --user-override)"--user-override'[USER Set the user name on the control artifact]:user:($(__fossil_users))' \
            '(- *)'--help'[Show help and exit]'                                                                                  \
            '1:check-in:'                                                                                                        \
            '*:parents:'

          ;;
        (revert)
          _arguments                                                                            \
            "(--help -r --revision)"{-r,--revision}'[VERSION Revert to given VERSION]:version:' \
            '(- *)'--help'[Show help and exit]'                                                 \
            '*:files:_files'

          ;;
        (rss)
          _arguments                                                                                             \
            "(--help -type -y)"{-type,-y}'[FLAG]:type:(all ci t w)'                                              \
            "(--help -limit -n)"{-limit,-n}'[LIMIT The maximum number of items to show]:number:'                 \
            "(--help -tkt)"-tkt'[HASH Filters for only those events for the specified ticket]:hash:'             \
            "(--help -tag)"-tag'[TAG Filters for a tag]:tag:($(__fossil_tags))'                                  \
            "(--help -wiki)"-wiki'[NAME Filters on a specific wiki page]:wiki page:($(__fossil_wiki_pages))'     \
            "(--help -name)"-name'[FILENAME filters for a specific file]:file:_files'                            \
            "(--help -url)"-url'[STRING Sets the RSS feed'"'"'s root URL to the given string]:url:__fossil_urls' \
            '(- *)'--help'[Show help and exit]'

          ;;
        (scrub)
          _arguments                                                                               \
            "(--help --force)"--force'[Do not prompt for confirmation]'                            \
            "(--help --private)"--private'[Only private branches are removed from the repository]' \
            "(--help --verily)"--verily'[Scrub real thoroughly (see above)]'                       \
            '(- *)'--help'[Show help and exit]'                                                    \
            '1::fossils:($(__fossil_repos))'

          ;;
        (search)
          _arguments                                                                              \
            "(--help -a --all)"{-a,--all}'[Output all matches, not just best matches]'            \
            "(--help -n --limit)"{-n,--limit}'[N Limit output to N matches]:number:'              \
            "(--help -W --width)"{-W,--width}'[WIDTH Set display width to WIDTH columns]:number:' \
            '(- *)'--help'[Show help and exit]'                                                   \
            '*:patterns:'

          ;;
        (server|ui)
          _arguments                     \
            ${_fossil_server_options[@]} \
            '1::fossils:($(__fossil_repos))'

          ;;
        (set|settings)
          _arguments                                                         \
            "(--global)"--global'[Set or unset the given property globally]' \
            "(--exact)"--exact'[Only consider exact name matches]'           \
            "1:setting:($(__fossil_settings))"                               \
            '2:value:'

          ;;
        (sha1sum)
          _arguments                                                                \
            "(--help -h --dereference)"{-h,--dereference}'[Resolve symbolic links]' \
            '(- *)'--help'[Show help and exit]'                                     \
            '*:files:_files'

          ;;
        (sha3sum)
          _arguments                                                                                \
            "(--help --224 --256 --384 --512 --size)"--224'[Compute a SHA3-224 hash]'               \
            "(--help --256 --224 --384 --512 --size)"--256'[Compute a SHA3-256 hash (the default)]' \
            "(--help --384 --224 --256 --512 --size)"--384'[Compute a SHA3-384 hash]'               \
            "(--help --512 --224 --256 --384 --size)"--512'[Compute a SHA3-512 hash]'               \
            "(--help --size --224 --256 --384 --512 --size)"--size'[N An N-bit hash]:number:'       \
            "(--help -h --dereference)"{-h,--dereference}'[Resolve symbolic links]'                 \
            '(- *)'--help'[Show help and exit]'                                                     \
            '*:files:_files'

          ;;
        (shell)
          _arguments \
          '(- *)'--help'[Show help and exit]'

          ;;
        (smtpd)
          _arguments                                                                            \
            "(--help --dryrun)"--dryrun'[Do not record any emails in the database]'             \
            "(--help --trace)"--trace'[Print a transcript of the conversation on stderr]'       \
            "(--help --ipaddr)"--ipaddr'[ADDR The SMTP connection originates at ADDR]:address:' \
            '(- *)'--help'[Show help and exit]'                                                 \
            '1:fossils:($(__fossil_repos))'

          ;;
        (sql|sqlite3)
          _arguments                                                                                            \
            "(--help --no-repository)"--no-repository'[Skip opening the repository database]'                   \
            "(--help --readonly)"--readonly'[Open the repository read-only]'                                    \
            "(--help -R)"-R'[REPOSITORY Use REPOSITORY as the repository database]:fossils:($(__fossil_repos))' \
            '(- *)'--help'[Show help and exit]'

          ;;
        (sqlar)
          _arguments                                                                                                     \
            "(--help -X --exclude)"{-X,--exclude}'[GLOBLIST Comma-separated list of GLOBs of files to exclude]:pattern:' \
            "(--help --include)"--include'[GLOBLIST Comma-separated list of GLOBs of files to include]:pattern:'         \
            "(--help --name)"--name'[DIR The name of the top-level directory in the archive]:directory:_files -/'        \
            "(--help -R)"-R'[REPOSITORY Specify a Fossil repository]:fossils:($(__fossil_repos))'                        \
            '(- *)'--help'[Show help and exit]'                                                                          \
            '1:version:'                                                                                                 \
            '2:output file:_files'

          ;;
        (stash)
          __fossil_stash

          ;;
        (sync)
          _arguments                                                                                                      \
            "(--help -B --httpauth)"{-B,--httpauth}'[USER:PASS Credentials for the simple HTTP auth protocol]:user pass:' \
            "(--help --ipv3)"--ipv4'[Use only IPv4, not IPv6]'                                                            \
            "(--help --once)"--once'[Do not remember URL for subsequent syncs]'                                           \
            "(--help --proxy)"--proxy'[PROXY Use the specified HTTP proxy]:proxy:'                                        \
            "(--help --private)"--private'[Sync private branches too]'                                                    \
            "(--help -R --repository)"{-R,--repository}'[REPO Local repository to sync with]:fossils:($(__fossil_repos))' \
            "(--help --ssl-identity)"--ssl-identity'[FILE Local SSL credentials]:ssl credentials:'                        \
            "(--help --ssh-command)"--ssh-command'[SSH Use SSH as the "ssh" command]:ssh command:'                        \
            "(--help -u --unversioned)"{-u,--unversioned}'[Also sync unversioned content]'                                \
            "(--help -v --verbose)"{-v,--verbose}'[Additional (debugging) output]'                                        \
            "(--help --verily)"--verily'[Exchange extra information with the remote]'                                     \
            '(- *)'--help'[Show help and exit]'                                                                           \
            '1::url:__fossil_urls'

          ;;
       (tag)
          __fossil_tag

          ;;
       (tarball)
          _arguments                                                                                                      \
             "(--help -X --exclude)"{-X,--exclude}'[GLOBLIST Comma-separated list of GLOBs of files to exclude]:pattern:' \
             "(--help --include)"--include'[GLOBLIST Comma-separated list of GLOBs of files to include]:pattern:'         \
             "(--help --name)"--name'[DIR The name of the top-level directory in the archive]:directory:_files -/'        \
             "(--help -R)"-R'[REPOSITORY Specify a Fossil repository]:fossils:($(__fossil_repos))'                        \
             '(- *)'--help'[Show help and exit]'                                                                          \
             '1:version:'                                                                                                 \
             '2:ouput file:_files'

          ;;
        (ticket)
          __fossil_ticket

          ;;
       (timeline)
          _arguments                                                                                        \
             "(--help -n --limit)"{-n,--limit}'[N Output the first N entries]:number:'                      \
             "(--help -p --path)"{-p,--path}'[PATH Output items affecting PATH only]:path:_files'           \
             "(--help --offset)"--offset'[P skip P changes]:number:'                                        \
             "(--help --sql)"--sql'[Show the SQL used to generate the timeline]'                            \
             "(--help -t --type)"{-t,--type}'[TYPE Output items from the given types only]:type:(ci e t w)' \
             "(--help -v --verbose)"{-v,--verbose}'[Output the list of files changed by each commit]'       \
             "(--help -W --width)"{-W,--width}'[NUM Width of lines (default is to auto-detect)]:number:'    \
             "(--help -R)"-R'[REPO Specifies the repository db to use]:fossils:($(__fossil_repos))'         \
             '(- *)'--help'[Show help and exit]'                                                            \
             '::when:(before after descendants children ancestors parents)'                                 \
             '::check-in:'                                                                                  \
             '::datetime:'

          ;;
        (tls-config)
          __fossil_tls_config

          ;;
        (touch)
          _arguments                                                                                                  \
            "(--help --now -c --checkin -C --checkout)"--now'[Stamp each affected file with the current time]'        \
            "(--help -c --checkin --now -C --checkout)"{-c,--checkin}'[Stamp with the last modification time]'        \
            "(--help -C --checkout -c --checkin --now)"{-C,--checkout}'[Stamp with the time of the current checkout]' \
            "(--help -g)"-g'[GLOBLIST Comma-separated list of glob patterns]:pattern:'                                \
            "(--help -G)"-G'[GLOBFILE Like -g but reads globs from glob default file]:pattern:'                       \
            "(--help -v -verbose)"{-v,-verbose}'[Outputs extra information about its globs]'                          \
            "(--help -n --dry-run)"{-n,--dry-run}'[Do not touch anything]'                                            \
            "(--help -q --quiet)"{-q,--quiet}'[Suppress warnings]'                                                    \
            '(- *)'--help'[Show help and exit]'                                                                       \
            '*:files:_files'

          ;;
        (unpublished)
          _arguments                                                      \
          "(--help --all)"--all'[Show all artifacts, not just check-ins]' \
          '(- *)'--help'[Show help and exit]'

          ;;
        (unset)
          _arguments                                                         \
            "(--global)"--global'[Set or unset the given property globally]' \
            "(--exact)"--exact'[Only consider exact name matches]'           \
            "1:setting:($(__fossil_settings))"

          ;;
        (unversioned|uv)
          __fossil_unversioned

          ;;
        (update)
          _arguments                                                                                                 \
            "(--help --case-sensitive)"--case-sensitive'[BOOL Override case-sensitive setting]:bool:(yes no)'        \
            "(--help --debug)"--debug'[Print debug information on stdout]'                                           \
            "(--help --latest)"--latest'[Update to latest version]'                                                  \
            "(--help --force-missing)"--force-missing'[Force update if missing content after sync]'                  \
            "(--help -n --dry-run)"{-n,--dry-run}'[If given, display instead of run actions]'                        \
            "(--help -v --verbose)"{-v,--verbose}'[Print status information about all files]'                        \
            "(--help -W --width)"{-W,--width}'[WIDTH Width of lines (default is to auto-detect)]:number:'            \
            "(--help --setmtime)"--setmtime'[Set timestamps of all files to match their SCM-side times]'             \
            "(--help -K --keep-merge-files)"{-K,--keep-merge-files}'[On merge conflict, retain the temporary files]' \
            '(- *)'--help'[Show help and exit]'                                                                      \
            '1::version:'                                                                                            \
            '*::files:_files'

          ;;
        (user)
          __fossil_user

          ;;
        (version)
          _arguments                                                                            \
            "(--help -v --verbose)"{-v,--verbose}'[Additional details about optional features]' \
            '(- *)'--help'[Show help and exit]'

          ;;
        (whatis)
          _arguments                                                                             \
            "(--help --type)"--type'[TYPE Only find artifacts of TYPE]:type:(ci t w g e)'        \
            "(--help -v --verbose)"{-v,--verbose}'[Provide extra information (such as the RID)]' \
            '(- *)'--help'[Show help and exit]'                                                  \
            '1:name:'

          ;;
        (wiki)
          __fossil_wiki

          ;;
        (zip)
          _arguments                                                                                                   \
          "(--help -X --exclude)"{-X,--exclude}'[GLOBLIST Comma-separated list of GLOBs of files to exclude]:pattern:' \
          "(--help --include)"--include'[GLOBLIST Comma-separated list of GLOBs of files to include]:pattern:'         \
          "(--help --name)"--name'[DIR The name of the top-level directory in the archive]:directory:_files -/'        \
          "(--help -R)"-R'[REPOSITORY Specify a Fossil repository]:fossils:($(__fossil_repos))'                        \
          '(- *)'--help'[Show help and exit]'                                                                          \
          '1:version:'                                                                                                 \
          '2:output file:_files'

          ;;
      esac
      ;;
    *)
  esac
  return 0
}

################################################################################
# Subcommands                                                                  #
################################################################################

########################################
# fossil alerts                        #
########################################
function __fossil_alerts_settings() {
  fossil alerts settings 2>/dev/null
}

function __fossil_alerts_subscribers() {
  fossil alerts subscribers 2>/dev/null
}

function __fossil_alerts() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(--help -R --repository)"{-R,--repository}'[FILE Run command on repository FILE]:fossils:($(__fossil_repos))'
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand'                             \
        pending reset send settings status subscribers \
        test-message unsubscribe

      ;;
    (options)
      case $line[1] in
        (pending|reset)
          _arguments \
           ${_common_options[@]}

          ;;
        (send)
          _arguments                                    \
            ${_common_options[@]}                       \
            "(--help --digest)"--digest'[Send digests]' \
            "(--help --test)"--test'[Write to standard output]'

          ;;
        (set|settings)
          _arguments                                \
           ${_common_options[@]}                    \
            '1::name:($(__fossil_alerts_settings))' \
            '2::value:'

          ;;
        (subscribers)
          _arguments             \
           ${_common_options[@]} \
           '1::pattern:'

          ;;
        (test-message)
          _arguments                                                  \
           ${_common_options[@]}                                      \
            "(--help --body)"--body'[FILENAME]:file:_files'           \
            "(--help --smtp-trace)"--smtp-trace'[]'                   \
            "(--help --stdout)"--stdout'[]'                           \
            "(--help --subject -S)"{--subject,-S}'[SUBJECT]:subject:' \
            '1:recipient:'

          ;;
        unsubscribe)
          _arguments             \
           ${_common_options[@]} \
            '1:email:($(__fossil_alerts_subscribers))'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil all                           #
########################################
function __fossil_all() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
    "(--help --showfile)"--showfile'[Show the repository or checkout being operated upon]'
    "(--help --dontstop)"--dontstop'[Continue with other repositories even after an error]'
    "(--help --dry-run)"--dry-run'[If given, display instead of run actions]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand'                                              \
        backup cache changes clean config dbstat extras fts-config info \
        pull push rebuild sync set unset server ui add ignore list ls

      ;;
    (options)
      case $line[1] in
        (backup)
          _arguments              \
            ${_common_options[@]} \
            '1:output directory:_files -/'

          ;;
        (cache)
          __fossil_cache

          ;;
        (clean)
          _arguments                    \
            ${_common_options[@]}       \
            ${_fossil_clean_options[@]} \
            "(--help --whatif)"--whatif'[Review the files to be deleted]'

          ;;
        (config)
          _arguments              \
            ${_common_options[@]} \
            '1:what:(pull)'       \
            '2:area:'

          ;;
        (dbstat)
          _arguments \
            ${_fossil_dbstat_options[@]}

          ;;
        (extras)
          _arguments \
            ${_fossil_extras_options[@]}

          ;;
        (fts-config)
          __fossil_fts_config

          ;;
        (pull|push)
          _arguments              \
            ${_common_options[@]} \
            "(--help -v --verbose)"{-v,--verbose}'[Additional (debugging) output]'

          ;;
        (rebuild)
          _arguments              \
            ${_common_options[@]} \
            ${_fossil_rebuild_options[@]}

          ;;
        (sync)
          _arguments                                                                       \
            ${_common_options[@]}                                                          \
            "(--help -u --unversioned)"{-u,--unversioned}'[Also sync unversioned content]' \
            "(--help -v --verbose)"{-v,--verbose}'[Additional (debugging) output]'

          ;;
        (set|unset)
          _arguments                                                                \
            ${_common_options[@]}                                                   \
            "1:setting:($(__fossil_settings))"                                      \
            '2:value:'                                                              \
            "(--help --global)"--global'[Set or unset the given property globally]' \
            "(--help --exact)"--exact'[Only consider exact name matches]'

          ;;
        (server|ui)
          _arguments              \
            ${_common_options[@]} \
            ${_fossil_server_options[@]}

          ;;
        (add)
          _arguments              \
            ${_common_options[@]} \
            '*:fossils:($(__fossil_repos))'

          ;;
        (ignore)
          _arguments                                                                            \
            ${_common_options[@]}                                                               \
            "(--help -c --ckout)"{-c,--ckout}'[Ignore local checkouts instead of repositories]' \
            '*:fossils:($(__fossil_repos))'

          ;;
        (list|ls)
          _arguments                          \
            "(-)"--help'[Show help and exit]' \
            "(--help -c --ckout)"{-c,--ckout}'[List local checkouts instead of repositories]'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}


########################################
# fossil bisect                        #
########################################
function __fossil_bisect() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        bad good log chart next options reset skip vlist ls status ui undo

      ;;
    (options)
      case $line[1] in
        (bad|good|skip)
          _arguments \
            '1:version:'

          ;;
        (options)
          _arguments \
            "1::name:($(fossil bisect options 2>/dev/null | awk '{print $1}'))" \
            '2::value:'

          ;;
        (vlist|ls|status)
          _arguments \
            "(-a --all)"{-a,--all}'[List all]'

          ;;
        (ui)
          _arguments \
            ${_fossil_server_options[@]}

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil branch                        #
########################################
function __fossil_branch() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
    "(--help -R --repository)"{-R,--repository}'[FILE Run commands on repository FILE]:fossils:($(__fossil_repos))'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        current info list ls new

      ;;
    (options)
      case $line[1] in
        (current)
          _arguments \
            ${_common_options[@]}

          ;;
        (info)
          _arguments              \
            ${_common_options[@]} \
          ':branch:($(__fossil_branches))'

          ;;
        (list|ls)
          _arguments                                                    \
            ${_common_options[@]}                                       \
            "(--help -a --all)"{-a,--all}'[List all branches]'          \
            "(--help -c --closed)"{-c,--closed}'[List closed branches]' \
            "(--help -r)"-r'[Reverse the sort order]'                   \
            "(--help -t)"-t'[Show recently changed branches first]'

          ;;
        (new)
          _arguments                                                                                                           \
            ${_common_options[@]}                                                                                              \
            "(--help --private)"--private'[Branch is private]'                                                                 \
            "(--help --bgcolor)"--bgcolor'[COLOR Use COLOR instead of automatic background]:color:'                            \
            "(--help --nosign)"--nosign'[Do not sign contents on this branch]'                                                 \
            "(--help --date-override)"--date-override'[DATE Use DATE instead of '"'"'now'"'"']:date:(now)'                     \
            "(--help --user-override)"--user-override'[USER Use USER instead of the default]:user:($(__fossil_users))'         \
            '1:branch name:'                                                                                                   \
            '2:base check-in:'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil bundle                        #
########################################
function __fossil_bundle() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        append cat export extend import ls purge

      ;;
    (options)
      case $line[1] in
        (append)
          _arguments          \
            '1:bundle:_files' \
            '*:files:_files'

          ;;
        (bundle)
          _arguments          \
            '1:what:(cat)'    \
            '2:bundle:_files' \
            '*:hashes:'

          ;;
        (export)
          _arguments                                                                                       \
            "(--branch)"--branch'[BRANCH Package all check-ins on BRANCH]:branch:($(__fossil_branches))'   \
            "(--from)"--from'[TAG1 --to TAG2 Package check-ins starting with TAG1]:tag:($(__fossil_tags))' \
            "(--to)"--to'[TAG2 Package check-ins up to TAG2]:tag:($(__fossil_tags))'                       \
            "(--checkin)"--checkin'[TAG Package the single check-in TAG]:tag:($(__fossil_tags))'           \
            "(--standalone)"--standalone'[Do no use delta-encoding against]'                               \
            '1:bundle:_files'

          ;;
        (extend|ls|purge)
          _arguments \
            '1:bundle:_files'

          ;;
        (import)
          _arguments                                                        \
            "(--publish)"--publish'[Make the import public]'                \
            "(--force)"--force'[Import even if project codes do not match]' \
            '1:bundle:_files'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil cache                         #
########################################
function __fossil_cache_subcommand {
}

function __fossil_cache() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        clear init list ls status

      ;;
    *)
      _message 'no more arguments'

      ;;
  esac
  return 0
}

########################################
# fossil configuration                 #
########################################
function __fossil_configuration() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(--help -R --repository)"{-R,--repository}'[FILE Extract info from repository FILE]:fossils:($(__fossil_repos))'
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C           \
    ${_common_options[@]} \
    '1:method:->method'   \
    '*::options:->options'

  case $state in
    (method)
      _values 'method' \
        export import merge pull push reset sync

      ;;
    (options)
      case $line[1] in
        (export)
          _arguments                \
            ${_common_options[@]}   \
            '1:area:__fossil_areas' \
            '2:file:_files'

          ;;
        (import|merge)
          _arguments              \
            ${_common_options[@]} \
            '1:file:_files'

          ;;
        (pull)
          _arguments                                                    \
            ${_common_options[@]}                                       \
            "(--help --overwrite)"--overwrite'[Replace local settings]' \
            '1:area:__fossil_areas'                                     \
            '2::url:__fossil_urls'

          ;;
        (push|sync)
          _arguments                \
            ${_common_options[@]}   \
            '1:area:__fossil_areas' \
            '2::url:__fossil_urls'

          ;;
        (reset)
          _arguments              \
            ${_common_options[@]} \
            '1:area:__fossil_areas'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil fts-config                    #
########################################
function __fossil_fts_config() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        reindex index enable disable stemmer

      ;;
    (options)
      case $line[1] in
        index|stemmer)
          _arguments \
            "(- *):setting:(on off)"

          ;;
        enable|disable)
          _arguments \
            "(- *):setting:(cdtwe)"

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil git                           #
########################################
function __fossil_git() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    subcommand)
      _values 'subcommand' \
        export import status

      ;;
    options)
      case $line[1] in
        (export)
          _arguments                                                                                              \
            ${_common_options[@]}                                                                                 \
            "(--help --autopush)"--autopush'[URL Automatically do a '"'"'git push'"'"' to URL]:url:__fossil_urls' \
            "(--help --debug)"--debug'[FILE Write fast-export text to FILE]:file:_files'                          \
            "(--help --force -f)"{--force,-f}'[Do the export even if nothing has changed]'                        \
            "(--help --limit)"--limit'[N Add no more than N new check-ins to MIRROR]:number:'                     \
            "()*"{--quiet,-q}'[Reduce output. Repeat for even less output]'                                       \
            "(--verbose -v)"{--verbose,-v}'[More output]'

          ;;
        (import)
          _arguments              \
            ${_common_options[@]} \
            ':url:__fossil_urls'

          ;;
        (status)
          _arguments              \
            ${_common_options[@]}

            ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil hook                          #
########################################
function __fossil_hook() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        add delete edit list status test

      ;;
    (options)
      case $line[1] in
        (add)
          _arguments                                          \
            ${_common_options[@]}                             \
            "(--help --command)"--command'[COMMAND]:command:' \
            "(--help --type)"--type'[TYPE]:type:'             \
            "(--help --sequence)"--sequence'[NUM]:number:'

          ;;
        (delete)
          _arguments              \
            ${_common_options[@]} \
            '*:IDs:'

          ;;
        (edit)
          _arguments                                          \
            ${_common_options[@]}                             \
            "(--help --command)"--command'[COMMAND]:command:' \
            "(--help --type)"--type'[TYPE]:type:'             \
            "(--help --sequence)"--sequence'[NUM]:number:'    \
            '*:IDs:'

          ;;
        (list|status)
          _arguments              \
            ${_common_options[@]} \

            ;;
        (test)
          _arguments                                                                                     \
            ${_common_options[@]}                                                                        \
            "(--help --dry-run)"--dry-run'[Print the script on stdout rather than run it]'               \
            "(--help --base-rcvid)"--base-rcvid'[N Pretend that the hook-last-rcvid value is N]:number:' \
            "(--help --new-rcvid)"--new-rcvid'[M Pretend that the last rcvid valud is M]:number:'        \
            "(--help --aux-file)"--aux-file'[NAME NAME is substituted for %A in the script]:name:'       \
            '1:ID:'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil json                          #
########################################
function __fossil_json_subcommands() {
  _values 'subcommand' \
    anonymousPassword artifact branch cap config diff dir g login logout \
    query rebuild report resultCodes stat tag timeline user version \
    whoami wiki
}

function __fossil_json() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
    "(--help -R --repository)"{-R,--repository}'[FILE Run commands on repository FILE]:fossils:($(__fossil_repos))'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _arguments                                                        \
        '(- *)'-json-input'[FILE Read JSON data from FILE]:file:_files' \
        '1:subcommand:__fossil_json_subcommands'

      ;;
    (options)
      case $line[1] in
        -json-input)
          _arguments              \
            ${_common_options[@]} \
            '1:file:_files'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
    *)
  esac
  return 0
}

########################################
# fossil login-group                   #
########################################
function __fossil_login_group() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        join leave

      ;;
    (options)
      case $line[1] in
        (join)
          _arguments                                                      \
            "(-name)"-name'[Specified the name of the login group]:name:' \
            ':fossils:($(__fossil_repos))'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil purge                         #
########################################
function __fossil_purge() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(--help --explain --dry-run)"--explain'[Make no changes, but show what would happen]'
    "(--help --dry-run --explain)"--dry-run'[An alias for --explain]'
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    "(-)"--help'[Show help and exit]' \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        artifacts cat checkins files list ls obliterate tickets undo wiki

      ;;
    (options)
      case $line[1] in
        (artifacts|cat)
          _arguments              \
            ${_common_options[@]} \
            '*:hashes:'

          ;;
        (checkins)
          _arguments              \
            ${_common_options[@]} \
            '*:tags:($(__fossil_tags))'

          ;;
        (files)
          _arguments              \
            ${_common_options[@]} \
            '*:files:_files'

          ;;
        (list|ls)
          _arguments              \
            ${_common_options[@]} \
            "(--help -l)"-l'[Provide more details]'

          ;;
        (obliterate)
          _arguments                                           \
            ${_common_options[@]}                              \
            "(--help --force)"--force'[Suppress confirmation prompt]' \
            '*:IDs:'

          ;;
        (tickets)
          _arguments              \
            ${_common_options[@]} \
            '*:ticket names:'

          ;;
        (undo)
          _arguments              \
            ${_common_options[@]} \
            '1:ID:'

          ;;
        (wiki)
          _arguments              \
            ${_common_options[@]} \
            '*:wiki pages:($(__fossil_wiki_pages))'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil remote                        #
########################################
function __fossil_remote() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        add delete list off

      ;;
    (options)
      case $line[1] in
        (add)
          _arguments              \
            '1:name:'             \
            '2:url:__fossil_urls'

          ;;

        (delete)
          _arguments              \
            '1:name:($(__fossil_remotes))'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil stash                         #
########################################
function __fossil_stash_ids() {
  fossil stash ls | grep '^\s*\d\+:' | awk -F ':' '{print $1}' | sed 's/^ *//'
}

function __fossil_stash() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        save snapshot list ls show gshow pop apply goto drop diff gdiff

      ;;
    (options)
      case $line[1] in
        (save|snapshot)
          _arguments                                                   \
            "(-m --comment)"{-m,--comment}'[MSG Add comment]:comment:' \
            '*:files:_files'

          ;;
        (list|ls)
          _arguments \
            "(-v --verbose)"{-v,--verbose}'[Show info about individual files]' \
            "(-W --width)"{-W,--width}'[N Set width]:number:'

          ;;
        (show|cat|diff|gdiff)
          _arguments \
            ${_fossil_diff_options[@]} \
            '1::stash ID:($(__fossil_stash_ids))'

          ;;
        (apply|goto)
          _arguments \
            '1::stash ID:($(__fossil_stash_ids))'

          ;;
        (drop|rm)
          _arguments                                                        \
            "(-a --all)"{-a,--all}'[Forget the whole stash (CANNOT UNDO!)]' \
            '1::stash ID:($(__fossil_stash_ids))'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil tag                           #
########################################
function __fossil_tag() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
         add cancel find list ls

      ;;
    (options)
      case $line[1] in
         (add)
            _arguments                                                                                              \
              ${_common_options[@]}                                                                                     \
               "(--help --raw)"--raw'[Raw tag name]'                                                                    \
               "(--help --propagate)"--propagate'[Propagating tag]'                                                     \
               "(--help --date-override)"--date-override'[DATETIME Set date and time added]:datetime:'                  \
               "(--help --user-override)"--user-override'[USER Name USER when adding the tag]:user:($(__fossil_users))' \
               "(--help --dryrun -n)"{--dryrun,-n}'[Display the tag text, but do not]'                                  \
               '1:tag name:($(__fossil_tags))'                                                                               \
               '2:check-in:'                                                                                            \
               '3::value:'

            ;;
         (cancel)
            _arguments                                                                                                    \
              ${_common_options[@]}                                                                                       \
               "(--help --raw)"--raw'[Raw tag name]'                                                                      \
               "(--help --date-override)"--date-override'[DATETIME Set date and time deleted]:datetime:'                  \
               "(--help --user-override)"--user-override'[USER Name USER when deleting the tag]:user:($(__fossil_users))' \
               "(--help --dryrun -n)"{--dryrun,-n}'[Display the control artifact, but do]'                                \
               '1:tag name:($(__fossil_tags))'                                                                                 \
               '2:check-in:'

            ;;
        (find)
           _arguments                                                          \
             ${_common_options[@]}                                             \
            "(--help --raw)"--raw'[Raw tag name]'                              \
            "(--help -t --type)"{-t,--type}'[TYPE One of "ci", or "e"]:(ci e)' \
            "(--help -n --limit)"{-n,--limit}'[N Limit to N results]:number:'  \
            '1:tag name:($(__fossil_tags))'

          ;;
       (list|ls)
          _arguments                                                                          \
            ${_common_options[@]}                                                             \
            "(--help --raw)"--raw'[List tags raw names of tags]'                              \
            "(--help --tagtype)"--tagtype'[TYPE List only tags of type TYPE]:tag type:(ci e)' \
            "(--help -v --inverse)"{-v,--inverse}'[Inverse the meaning of --tagtype TYPE]'    \
            '1::check-in:'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil ticket                        #
########################################
function __fossil_ticket() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        show list ls set change add history

      ;;
    (options)
      case $line[1] in
        (show)
          _arguments                                                                        \
            ${_common_options[@]}                                                           \
            "(--help -l --limit)"{-l,--limit}'[LIMITCHAR]:limit:'                           \
            "(--help -q --quote)"{-q,--quote}'[]'                                           \
            "(--help -R --repository)"{-R,--repository}'[FILE]:fossils:($(__fossil_repos))' \
            '1:report title/nr:'                                                            \
            '2::ticket filter:'

          ;;
       (list|ls)
          _arguments \
             ':what:(fields reports)'

          ;;
       (set|change)
          _arguments                              \
            ${_common_options[@]}                 \
            "(--help -q --quote)"{-q,--quote}'[]' \
            '1:ticket UUID:'                      \
            '*:field/value:'

          ;;
       (add)
          _arguments                              \
            ${_common_options[@]}                 \
            "(--help -q --quote)"{-q,--quote}'[]' \
            '*:field/value:'

          ;;
       (history)
          _arguments \
            ':ticket UUID:'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil tls-config                    #
########################################
function __fossil_tls_config() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        show remove-exception

      ;;
    (options)
      case $line[1] in
        (remove-exception)
          _arguments \
            '*:domains:'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil unversioned/uv                #
########################################
function __fossil_unversioned() {
  local curcontext="$curcontext" state line
  typeset -A opt_args
  local -a _common_options

  _common_options=(
    "(--help -R --repository)"{-R,--repository}'[FILE Use FILE as the repository]:fossils:($(__fossil_repos))'
    "(--help --mtime)"--mtime'[TIMESTAMP Use TIMESTAMP instead of "now"]:timestamp:'
    "(-)"--help'[Show help and exit]'
  )

  _arguments -C                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        add cat edit export list ls revert remove rm delete sync touch

      ;;
    (options)
      case $line[1] in
        (add)
          _arguments                                  \
            ${_common_options[@]}                     \
            "(--help --as)"--as'[UVFILE]:file:_files' \
            '*:files:_files'

          ;;
        (cat)
          _arguments              \
            ${_common_options[@]} \
            '*:files:_files'

          ;;
        (edit)
          _arguments              \
            ${_common_options[@]} \
            '1:file:_files'

          ;;
        (export)
          _arguments              \
            ${_common_options[@]} \
            '1:file:_files' \
            '2:output file:_files'

          ;;
        (list|ls)
          _arguments                                                               \
            ${_common_options[@]}                                                  \
            "(--help --glob)"--glob'[PATTERN Show only files that match]:pattern:' \
            "(--help --like)"--like'[PATTERN Show only files that match]:pattern:'

          ;;
        (revert)
          _arguments                                                             \
            ${_common_options[@]}                                                \
            "(--help -v --verbose)"{-v,--verbose}'[Extra diagnostic output]'     \
            "(--help -n --dryrun)"{-n,--dryrun}'[Show what would have happened]' \
            '1::url:__fossil_urls'

          ;;
        (remove|rm|delete)
          _arguments                                                            \
            ${_common_options[@]}                                               \
            "(--help --glob)"--glob'[PATTERN Remove files that match]:pattern:' \
            "(--help --like)"--like'[PATTERN Remove files that match]:pattern:' \
            '*:files:_files'

          ;;
        (sync)
          _arguments                                                             \
            ${_common_options[@]}                                                \
            "(--help -v --verbose)"{-v,--verbose}'[Extra diagnostic output]'     \
            "(--help -n --dryrun)"{-n,--dryrun}'[Show what would have happened]' \
            '1::url:__fossil_urls'

          ;;
        (touch)
          _arguments              \
            ${_common_options[@]} \
            '*:files:_files'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil user                          #
########################################
function __fossil_user() {
  local curcontext="$curcontext" state line
  typeset -a opt_args
  local -a _common_options

  _common_options=(
    "(--help -R --repository)"{-R,--repository}'[FILE Apply command to repository FILE]:fossils:($(__fossil_repos))'
    "(-)"--help'[show help and exit]'
  )

  _arguments -c                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        capabilities default list ls new password

      ;;
    (options)
      case $line[1] in
        (capabilities)
          _arguments                     \
            ${_common_options[@]}        \
            '1:user:($(__fossil_users))' \
            '2::string:'

          ;;
        (default)
          _arguments              \
            ${_common_options[@]} \
            '1::user:($(__fossil_users))'

          ;;
        (list|ls)
          _arguments \
            ${_common_options[@]}

          ;;
        (new)
          _arguments                      \
            ${_common_options[@]}         \
            '1::username:'                \
            '2::contact info:'            \
            '3::password:'

          ;;
        (password)
          _arguments                     \
            ${_common_options[@]}        \
            '1:user:($(__fossil_users))' \
            '2::password:'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}

########################################
# fossil wiki                          #
########################################
function __fossil_wiki() {
  local curcontext="$curcontext" state line
  typeset -a opt_args
  local -a _common_options

  _common_options=(
    "(-)"--help'[show help and exit]'
  )

  _arguments -c                 \
    ${_common_options[@]}       \
    '1:subcommand:->subcommand' \
    '*::options:->options'

  case $state in
    (subcommand)
      _values 'subcommand' \
        export create commit list

      ;;
    (options)
      case $line[1] in
        (export)
          _arguments                                                                                                     \
            ${_common_options[@]}                                                                                        \
            "(--help --technote -t)"{--technote,-t}'[DATETIME|TECHNOTE-ID Export a technote]:datetime/technote-id:(now)' \
            "(--help -h --html -H --HTML)"--html'[Render only HTML body]'                                                \
            "(--help -H --HTML -h --html)"--HTML'[Like -h|-html but wraps the output in <html>/</html>]'                 \
            "(--help -p --pre)"{-p,--pre}'[Wrap into <pre>...</pre>]'                                                    \
            '::pagename:($(__fossil_wiki_pages))'                                                                        \
            '::file:_files'

          ;;
        (create|commit)
          _arguments                                                                                        \
            ${_common_options[@]}                                                                           \
            "(--help -M --mimetype)"{-M,--mimetype}'[TEXT-FORMAT The mime type of the update]:mimetype:'    \
            "(--help --technote -t)"{--technote,-t}'[DATETIME|TECHNOTE-ID]:datetime/technote-id:(now)'      \
            "(--help --technote-tags)"--technote-tags'[TAGS The set of tags for a technote]:tags:'          \
            "(--help --technote-bgcolor)"--technote-bgcolor'[COLOR The color used for the technote]:color:' \
            '1:pagename:($(__fossil_wiki_pages))'                                                                                    \
            '2::file:_files'

          ;;
        (list|ls)
          _arguments                                                  \
            ${_common_options[@]}                                     \
            "(--help -t --technote)"{-t,--technote}'[List technotes]' \
            "(--help -s --show-technote-ids)"{-s,--show-technote-ids}'[The id of the tech note will be listed]'

          ;;
        *)
          _message 'no more arguments'

          ;;
      esac
      ;;
  esac
  return 0
}


########################################
# fossil test commands                 #
########################################

function __fossil_complete_test_commands() {
  case $line[1] in
    (test-add-alerts)
      _arguments                                                                                       \
        "(--help --backoffice)"--backoffice'[Run alert_backoffice() after all alerts have been added]' \
        "(--help --debug)"--debug'[Like --backoffice, but print to stdout]'                            \
        "(--help --digest)"--digest'[Process emails using SENDALERT_DIGEST]'                           \
        '(- *)'--help'[Show help and exit]'                                                            \
        '*:event IDs:'

      ;;
    (test-agg-cksum)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-alert)
      _arguments                                                                          \
        "(--help --digest)"--digest'[Generate digest alert text]'                         \
        "(--help --needmod)"--needmod'[Assume all events are pending moderator approval]' \
        '(- *)'--help'[Show help and exit]'                                               \
        '*:event IDs:'

      ;;
    (test-all-help)
      _arguments                                                                   \
        "(--help -e --everything)"{-e,--everything}'[Show all commands and pages]' \
        "(--help -t --test)"{-t,--test}'[Include test- commands]'                  \
        "(--help -w --www)"{-w,--www}'[Show WWW pages]'                            \
        "(--help -s --settings)"{-s,--settings}'[Show settings]'                   \
        "(--help -h --html)"{-h,--html}'[Transform output to HTML]'                \
        "(--help -r --raw)"{-r,--raw}'[No output formatting]'                      \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-ambiguous)
      _arguments                                                                        \
        "(--help --minsize)"--minsize'[N Show hases with N characters or more]:number:' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-ancestor-path)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:version 1:'                      \
        '2:version 2:'

      ;;
    (test-approx-match)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-backlinks)
      _arguments                                                                      \
        "(--help --mtime)"--mtime'[DATETIME Use an alternative date/time]:datetime:'  \
        "(--help --mimetype)"--mimetype'[TYPE Use an alternative mimetype]:mimetype:' \
        '(- *)'--help'[Show help and exit]'                                           \
        '1:srctype:'                                                                  \
        '2:srcid:'                                                                    \
        '3:input file:_files'

      ;;
    (test-backoffice-lease)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-builtin-get)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:name:'                           \
        '2::output file:_files'

      ;;
    (test-builtin-list)
      _arguments                                                          \
        "(--help --verbose)"--verbose'[Output total item count and size]' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-canonical-name)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-captcha)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:numbers:'

      ;;
    (test-ci-mini)
      _arguments                                                                                                         \
        "(--help --repository -R)"{--repository,-R}'[REPO The repository file to commit to]:fossils:($(__fossil_repos))' \
        "(--help --as)"--as'[FILENAME The repository-side name of the input file]:file:_files'                           \
        "(--help --comment -m)"{--comment,-m}'[COMMENT Required checkin comment]:comment:'                               \
        "(--help --comment-file -M)"{--comment-file,-M}'[FILE Reads checkin comment from the given file]:file:_files'    \
        "(--help --revision -r)"{--revision,-r}'[VERSION Commit from this version]:version:'                             \
        "(--help --allow-fork)"--allow-fork'[Allow commit against a non-leaf parent]'                                    \
        "(--help --allow-merge-conflict)"--allow-merge-conflict'[Allow checkin of a file with conflict markers]'         \
        "(--help --user-override)"--user-override'[USER User to use instead of the default]:user:($(__fossil_users))'    \
        "(--help --date-override)"--date-override'[DATETIME Date to use instead of '"'"'now'"'"']:datetime:(now)'        \
        "(--help --allow-older)"--allow-older'[Allow a commit to be older than its ancestor]'                            \
        "(--help --convert-eol-inherit)"--convert-eol-inherit'[Inherit EOL style from previous content]'                 \
        "(--help --convert-eol-unix)"--convert-eol-unix'[Convert the EOL style to Unix]'                                 \
        "(--help --convert-eol-windows)"--convert-eol-windows'[Convert the EOL style to Windows]'                        \
        "(--help --delta)"--delta'[Prefer to generate a delta manifest]'                                                 \
        "(--help --allow-new-file)"--allow-new-file'[Allow addition of a new file this way]'                             \
        "(--help --dump-manifest -d)"{--dump-manifest,-d}'[Dumps the generated manifest to stdout]'                      \
        "(--help --save-manifest)"--save-manifest'[FILE Saves the generated manifest to a file]:file:_files'             \
        "(--help --wet-run)"--wet-run'[Disables the default dry-run mode]'                                               \
        '(- *)'--help'[Show help and exit]'                                                                              \
        '1:file:_files'

      ;;
    (test-clusters)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-command-stats)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-comment-format)
      _arguments                                                                                               \
        "(--help --file)"--file'[The comment text is really just a file name to read it from]'                 \
        "(--help --decode)"--decode'[Decode the text using the same method used for a C-card from a manifest]' \
        "(--help --legacy)"--legacy'[Use the legacy comment printing algorithm]'                               \
        "(--help --trimcrlf)"--trimcrlf'[Enable trimming of leading/trailing CR/LF]'                           \
        "(--help --trimspace)"--trimspace'[Enable trimming of leading/trailing spaces]'                        \
        "(--help --wordbreak)"--wordbreak'[Attempt to break lines on word boundaries]'                         \
        "(--help --origbreak)"--origbreak'[Attempt to break when the original comment text is detected]'       \
        "(--help --indent)"--indent'[NUM Number of spaces to indent]:number:'                                  \
        "(--help -W --width)"{-W,--width}'[NUM Width of lines]:number:'                                        \
        '(- *)'--help'[Show help and exit]'                                                                    \
        '1:prefix:'                                                                                            \
        '2:text:'                                                                                              \
        '3::origtext:'

      ;;
    (test-commit-warning)
      _arguments                                                                                 \
        "(--help --no-settings)"--no-settings'[Do not consider any glob settings]'               \
        "(--help -v --verbose)"{-v,--verbose}'[Show per-file results for all pre-commit checks]' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-compress)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:input file:_files'               \
        '2:output file:_files'

      ;;
    (test-compress-2)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:input file 1:_files'             \
        '2:input file 2:_files'             \
        '3:output file:_files'

      ;;
    (test-contains-selector)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:css selector:'

      ;;
    (test-content-deltify)
      _arguments                            \
        "(--help --force)"--force'[]'       \
        '(- *)'--help'[Show help and exit]' \
        '1:rid:'                            \
        '*:src id:'

      ;;
    (test-content-erase)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:rid:'

      ;;
    (test-content-put)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'

      ;;
    (test-content-rawget)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-content-undelta)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:record id:'

      ;;
    (test-convert-stext)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:mimetype:'

      ;;
    (test-create-clusters)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-crosslink)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:record id:'

      ;;
    (test-cycle-compress)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-database-names)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-date-format)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:date string:'

      ;;
    (test-db-exec-error)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-decode-email)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'

      ;;
    (test-decode64)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:string:'

      ;;
    (test-delta)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:file:_files'

      ;;
    (test-delta-analyze)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:file:_files'

      ;;
    (test-delta-apply)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:delta:_files'

      ;;
    (test-delta-create)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:file:_files'                     \
        '3:delta:_files'

      ;;
    (test-describe-artifacts)
      _arguments                                                   \
        "(--help --from)"--from'[S An artifact]:artifact:'         \
        "(--help --count)"--count'[N Number of artifacts]:number:' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-detach)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1::fossils:($(__fossil_repos))'

      ;;
    (test-diff)
      _arguments                   \
        ${_fossil_diff_options[@]} \
        '1:file 1:_files'          \
        '2:file 2:_files'

      ;;
    (test-dir-size)
      _arguments                                                              \
        "(--help --nodots)"--nodots'[Omit files that begin with '"'"'.'"'"']' \
        '(- *)'--help'[Show help and exit]'                                   \
        '1:directory:_files -/'                                               \
        '2::glob pattern:'

      ;;
    (test-echo)
      _arguments                                                \
        "(--help --hex)"--hex'[Show the output as hexadecimal]' \
        '(- *)'--help'[Show help and exit]'                     \
        '*:args:'

      ;;
    (test-emailblob-refcheck)
      _arguments                                                                       \
        "(--help --repair)"--repair'[Fix up the enref field]'                          \
        "(--help --full)"--full'[Give a full report]'                                  \
        "(--help --clean)"--clean'[Used with --repair, removes entries with enref==0]' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-encode64)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:string:'

      ;;
    (test-escaped-arg)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:args:'

      ;;
    (test-etag)
      _arguments                                    \
        "(--help --key)"--key'[KEYNUM]:key number:' \
        "(--help --hash)"--hash'[HASH]:hash:'       \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-file-copy)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:source:_files'                   \
        '2:destination:_files'

      ;;
    (test-file-environment)
      _arguments                                                                                                 \
        "(--help --allow-symlinks)"--allow-symlinks'[BOOL Temporarily turn allow-symlinks on/off]:bool:(yes no)' \
        "(--help --open-config)"--open-config'[Open the configuration database first]'                           \
        "(--help --slash)"--slash'[Trailing slashes, if any, are retaine]'                                       \
        "(--help --reset)"--reset'[Reset cached stat() info for each file]'                                      \
        '(- *)'--help'[Show help and exit]'                                                                      \
        '*:files:_files'

      ;;
    (test-fileage)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:checkin:'

      ;;
    (test-filezip)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-find-mx)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:domain:'

      ;;
    (test-find-pivot)
      _arguments                                                                               \
        "(--help --ignore-merges)"--ignore-merges'[Ignore merges for discovering name pivots]' \
        '(- *)'--help'[Show help and exit]'                                                    \
        '*:args:'

      ;;
    (test-fingerprint)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1::rcvid:'

      ;;
    (test-forumthread)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:thread id:'

      ;;
    (test-fossil-system)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-fuzz)
      _arguments                                                      \
        "(--help --type)"--type'[TYPE]:type:(wiki markdown artifact)' \
        '(- *)'--help'[Show help and exit]'                           \
        '*:files:_files'

      ;;
    (test-glob)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:pattern:'                        \
        '2:string:'

      ;;
    (test-grep)
      _arguments                                                     \
        "(--help -i --ignore-case)"{-i,--ignore-case}'[Ignore case]' \
        '(- *)'--help'[Show help and exit]'                          \
        '1:regexp:'                                                  \
        '*:files:_files'

      ;;
    (test-gzip)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'

      ;;
    (test-hash-color)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:tags:($(__fossil_tags))'

      ;;
    (test-hash-passwords)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:fossils:($(__fossil_repos))'

      ;;
    (test-html-tidy)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-html-to-text)
      _arguments \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-html-tokenize)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-http)
      _arguments                                                                        \
        "(--help --th-trace)"--th-trace'[Trace TH1 execution (for debugging purposes)]' \
        "(--help --usercap)"--usercap'[CAP user capability string]:capability string:'  \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-httpmsg)
      _arguments                                                                  \
        "(--help --compress)"--compress'[Use ZLIB compression on the payload]'    \
        "(--help --mimetype)"--mimetype'[TYPE Mimetype of the payload]:mimetype:' \
        "(--help --out)"--out'[FILE Store the reply in FILE]:file:_files'         \
        "(--help -v)"-v'[Verbose output]'                                         \
        '(- *)'--help'[Show help and exit]'                                       \
        '1:url:__fossil_urls' \
        '2::payload:'

      ;;
    (test-integrity)
      _arguments                                                                                   \
        "(--help -d --db-only)"{-d,--db-only}'[Run "PRAGMA integrity_check" on the database only]' \
        "(--help --parse)"--parse'[Parse all manifests, wikis, tickets, events, etc]'              \
        "(--help -q --quick)"{-q,--quick}'[Run "PRAGMA quick_check" on the database only]'         \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-is-reserved-name|test-is-ckout-db)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-ishuman)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-isspace)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-leaf-ambiguity)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:names:'

      ;;
    (test-list-page)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:directory:_files -/'

      ;;
    (test-list-webpage)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-loadavg)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-looks-like-utf)
      _arguments                                                                              \
        "(--help -n --limit)"{-n,--limit}'[NUM Repeat looks-like function NUM times]:number:' \
        "(--help --utf8)"--utf8'[Ignoring BOM and file size, force UTF-8 checking]'           \
        "(--help --utf16)"--utf16'[Ignoring BOM and file size, force UTF-16 checking]'        \
        '(- *)'--help'[Show help and exit]'                                                   \
        '1:file:_files'

      ;;
    (test-mailbox-hashname)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:human name:'

      ;;
    (test-markdown-render)
      _arguments                                                               \
        "(--help --safe)"--safe'[Restrict the output to use only "safe" HTML]' \
        '(- *)'--help'[Show help and exit]'                                    \
        '*:files:_files'

      ;;
    (test-match)
      _arguments                                                                 \
        "(--help --begin)"--begin'[TEXT Text to insert before each match]:text:' \
        "(--help --end)"--end'[TEXT Text to insert after each match]:text:'      \
        "(--help --gap)"--gap'[TEXT Text to indicate elided content]:text:'      \
        "(--help --html)"--html'[Input is HTML]'                                 \
        "(--help --static)"--static'[Use the static Search object]'              \
        '(- *)'--help'[Show help and exit]'                                      \
        '1:search string:'                                                       \
        '*:files:_files'

      ;;
    (test-mimetype)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-missing)
      _arguments                                                               \
        "(--help --notshunned)"--notshunned'[Do not report shunned artifacts]' \
        "(--help --quiet)"--quiet'[Only show output if there are errors]'      \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-move-repository)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:pathname:_files'

      ;;
    (test-name-changes)
      _arguments                                      \
        "(--help --debug)"--debug'[Enable debugging]' \
        '(- *)'--help'[Show help and exit]'           \
        '1:version 1:'                                \
        '2:version 2:'

      ;;
    (test-name-to-id)
      _arguments                                                             \
        "(--help --count)"--count'[N Repeat the conversion N times]:number:' \
        '(- *)'--help'[Show help and exit]'                                  \
        '*:name:'

      ;;
    (test-obscure)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:args:'

      ;;
    (test-orphans)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-parse-all-blobs)
      _arguments \
        "(--help --limit)"--limit'[N Parse no more than N blobs]:number:' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-parse-manifest)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2::n:'

      ;;
    (test-phantoms)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-process-id)
      _arguments                                                                  \
        "(--help --sleep)"--sleep'[N Sleep for N seconds before exiting]:number:' \
        '(- *)'--help'[Show help and exit]'                                       \
        '*:process id:'

      ;;
    (test-prompt-password)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:prompt:'                         \
        '2:verify:(0 1 2)'

      ;;
    (test-prompt-user)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:prompt:'

      ;;
    (test-random-password)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1::length:'

      ;;
    (test-rawdiff)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file 1:_files'                   \
        '2:file 2:_files'

      ;;
    (test-relative-name)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-reserved-names)
      _arguments                          \
        "(--help -omitrepo)"-omitrepo'[]' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-safe-html)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-sanitize-name)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:args:'

      ;;
    (test-search-stext)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:type:(c d e t w)'                \
        '2:rid:'                            \
        '3:name:'

      ;;
    (test-set-mtime)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'                     \
        '2:date/time:'

      ;;
    (test-shortest-path)
      _arguments                                                                 \
        "(--help --no-merge)"--no-merge'[Follow only direct parent-child paths]' \
        '(- *)'--help'[Show help and exit]'                                      \
        '1:version 1:'                                                           \
        '2:version 2:'

      ;;
    (test-simplify-name)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-smtp-probe)
      _arguments                                                                    \
        "(--help --direct)"--direct'[Use DOMAIN directly without going through MX]' \
        "(--help --port)"--port'[N Talk on TCP port N]:number:'                     \
        '(- *)'--help'[Show help and exit]'                                         \
        '1:domain:'                                                                 \
        '2::me:'

      ;;
    (test-smtp-send)
      _arguments                                                                       \
        "(--help --direct)"--direct'[Bypass MX lookup]'                                \
        "(--help --relayhost)"--relayhost'[HOST Use HOST as relay for delivery]:host:' \
        "(--help --port)"--port'[Use TCP port N instead of 25]:number:'                \
        "(--help --trace)"--trace'[Show the SMTP conversation on the console]'         \
        '(- *)'--help'[Show help and exit]'                                            \
        '1:email:_files'                                                               \
        '2:from:'                                                                      \
        '*:to:'

      ;;
    (test-smtp-senddata)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:file:_files'

      ;;
    (test-subtree)
      _arguments                                                                                             \
        "(--help --branch)"--branch'[BRANCH Include only check-ins on BRANCH]:branch:($(__fossil_branches))' \
        "(--help --from)"--from'[TAG Start the subtree at TAG]:tag:($(__fossil_tags))'                       \
        "(--help --to)"--to'[TAG End the subtree at TAG]:tag:($(__fossil_tags))'                             \
        "(--help --checkin)"--checkin'[TAG The subtree is the single check-in TAG]:tag:($(__fossil_tags))'   \
        "(--help --all)"--all'[Include FILE and TAG artifacts]'                                              \
        "(--help --exclusive)"--exclusive'[Include FILES exclusively on check-ins]'                          \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-tag)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:tag:($(__fossil_tags))'          \
        '2:artifact id:'                    \
        '3::value:'

      ;;
    (test-tarball)
      _arguments                                                                                          \
        "(--help -h --dereference)"{-h,--dereference}'[Follow symlinks; archive the files they point to]' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-tempname)
      _arguments                                                                              \
        "(--help --time)"--time'[SUFFIX Generate names based on the time of the day]:suffix:' \
        "(--help --tag)"--tag'[NAME Try to use NAME as the differentiator]:name:'             \
        '(- *)'--help'[Show help and exit]'                                                   \
        '*:basename:'

      ;;
    (test-terminal-size)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-th-eval)
      _arguments                                                                      \
        "(--help --cgi)"--cgi'[Include a CGI response header in the output]'          \
        "(--help --http)"--http'[Include an HTTP response header in the output]'      \
        "(--help --open-config)"--open-config'[Open the configuration database]'      \
        "(--help --set-anon-caps)"--set-anon-caps'[Set anonymous login capabilities]' \
        "(--help --set-user-caps)"--set-user-caps'[Set user login capabilities]'      \
        "(--help --th-trace)"--th-trace'[Trace TH1 execution]'                        \
        '(- *)'--help'[Show help and exit]'                                           \
        '1:script:_files'

      ;;
    (test-th-render)
      _arguments                                                                      \
        "(--help --cgi)"--cgi'[Include a CGI response header in the output]'          \
        "(--help --http)"--http'[Include an HTTP response header in the output]'      \
        "(--help --open-config)"--open-config'[Open the configuration database]'      \
        "(--help --set-anon-caps)"--set-anon-caps'[Set anonymous login capabilities]' \
        "(--help --set-user-caps)"--set-user-caps'[Set user login capabilities]'      \
        "(--help --th-trace)"--th-trace'[Trace TH1 execution]'                        \
        '(- *)'--help'[Show help and exit]'                                           \
        '1:file:_files'

      ;;
    (test-th-source)
      _arguments                                                                      \
        "(--help --cgi)"--cgi'[Include a CGI response header in the output]'          \
        "(--help --http)"--http'[Include an HTTP response header in the output]'      \
        "(--help --open-config)"--open-config'[Open the configuration database]'      \
        "(--help --set-anon-caps)"--set-anon-caps'[Set anonymous login capabilities]' \
        "(--help --set-user-caps)"--set-user-caps'[Set user login capabilities]'      \
        "(--help --th-trace)"--th-trace'[Trace TH1 execution]'                        \
        '(- *)'--help'[Show help and exit]'                                           \
        '1:file:_files'

      ;;
    (test-ticket-rebuild)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:ticket id:(all)'

      ;;
    (test-timespan)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:timestamp:'

      ;;
    (test-timewarp-list)
      _arguments \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-topological-sort)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-tree-name)
      _arguments                                                                                                     \
        "(--help --absolute)"--absolute'[Return an absolute path instead of a relative one]'                         \
        "(--help --case-sensitive)"--case-sensitive'[BOOL Enable or disable case-sensitive filenames]:bool:(yes no)' \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-unclustered)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-uncompress)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:in:_files'                       \
        '2:out:_files'

      ;;
    (test-unsent)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-urlparser)
      _arguments                                                            \
        "(--help --remember)"--remember'[Store results in last-sync-url]'   \
        "(--help --prompt-pw)"--prompt-pw'[Prompt for password if missing]' \
        '(- *)'--help'[Show help and exit]'                                 \
        '1:url:__fossil_urls'

      ;;
    (test-usernames)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-valid-for-windows)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:files:_files'

      ;;
    (test-var-get)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:var:'                            \
        '2::file:_files'

      ;;
    (test-var-list)
      _arguments                                                               \
        "(--help --unset)"--unset'[Delete entries instead of displaying them]' \
        "(--help --mtime)"--mtime'[Show last modification time]'               \
        '(- *)'--help'[Show help and exit]'                                    \
        '1::pattern:'

      ;;
    (test-var-set)
      _arguments                                                                    \
        "(--help --blob --file)"--blob'[FILE Binary file to read from]:file:_files' \
        "(--help --file --blob)"--file'[FILE File to read from]:file:_files'        \
        '(- *)'--help'[Show help and exit]'                                         \
        '1:var:'                                                                    \
        '2::value:'

      ;;
    (test-verify-all)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-whatis-all)
      _arguments \
        '(- *)'--help'[Show help and exit]'

      ;;
    (test-which)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '*:executable name:'

      ;;
    (test-wiki-relink)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:wiki page:($(__fossil_wiki_pages))'

      ;;
    (test-wiki-render)
      _arguments                                                            \
        "(--help --buttons)"--buttons'[Set the WIKI_BUTTONS flag]'          \
        "(--help --htmlonly)"--htmlonly'[Set the WIKI_HTMLONLY flag]'       \
        "(--help --linksonly)"--linksonly'[Set the WIKI_LINKSONLY flag]'    \
        "(--help --nobadlinks)"--nobadlinks'[Set the WIKI_NOBADLINKS flag]' \
        "(--help --inline)"--inline'[Set the WIKI_INLINE flag]'             \
        "(--help --noblock)"--noblock'[Set the WIKI_NOBLOCK flag]'          \
        '(- *)'--help'[Show help and exit]'                                 \
        '1:file:_files'

      ;;
    (test-without-rowid)
      _arguments                                                            \
        "(--help -n --dryrun)"{-n,--dryrun}'[Just print what would happen]' \
        '(- *)'--help'[Show help and exit]'                                 \
        '*:files:_files'

      ;;
    (test-xfer)
      _arguments                            \
        '(- *)'--help'[Show help and exit]' \
        '1:xfer message:'

      ;;
  esac
}

################################################################################
_fossil

Added tools/fossil-diff-log.








































































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#!/usr/bin/env perl 
# Fossil emulation of the "git log --patch / -p" feature: emit a stream
# of diffs from one version to the next for each file named on the
# command line.
#
# LIMITATIONS: It does not assume "all files" if you give no args, and
# it cannot take a directory to mean "all files under this parent".
#
# PREREQUISITES: This script needs several CPAN modules to run properly.
# There are multiple methods to install them:
#
#    sudo dnf install perl-File-Which perl-IO-Interactive
#    sudo apt install libfile-which-perl libio-interactive-perl
#    sudo cpanm File::Which IO::Interactive
#    ...etc...

use strict;
use warnings;

use Carp;
use File::Which;
use IO::Interactive qw(is_interactive);

die "usage: $0 <files...>\n\n" unless @ARGV;

my $out;
if (is_interactive()) {
	my $pager = $ENV{PAGER} || which('less') || which('more');
	open $out, '|-', $pager or croak "Cannot pipe to $pager: $!";
}
else {
	$out = *STDOUT;
}

open my $bcmd, '-|', 'fossil branch current'
		or die "Cannot get branch: $!\n";
my $cbranch = <$bcmd>;
chomp $cbranch;
close $bcmd;

for my $file (@ARGV) {
	my $lastckid;
	open my $finfo, '-|', "fossil finfo --brief --limit 0 '$file'"
			or die "Failed to get file info: $!\n";
	my @filines = <$finfo>;
	close $finfo;
	
	for my $line (@filines) {
		my ($currckid, $date, $user, $branch, @cwords) = split ' ', $line;
		next unless $branch eq $cbranch;
		if (defined $lastckid and defined $branch) {
            my $comment = join ' ', @cwords;
			open my $diff, '-|', 'fossil', 'diff', $file,
					'--from', $currckid,
					'--to',   $lastckid,
					or die "Failed to diff $currckid -> $lastckid: $!\n";
			my @dl = <$diff>;
			close $diff;
			my $patch = join '', @dl;

			print $out <<"OUT"
Checkin ID $currckid to $branch by $user on $date
Comment: $comment

$patch

OUT
		}

		$lastckid = $currckid;
	}
}
Added tools/fossil-stress.tcl.
















































































































































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#!/usr/bin/tclsh
#
# Run this script, giving the url of a Fossil server instances as the
# argument, and this script will start sending HTTP requests into the
# that server instance as fast as it can, as a stress test for the
# server implementation.
#
set nthread 10
for {set i 0} {$i<[llength $argv]} {incr i} {
  set x [lindex $argv $i]
  if {[regexp {^--[a-z]} $x]} {
    set x [string range $x 1 end]
  }
  if {$x=="-threads"} {
    incr i
    set nthread [lindex $argv $i]
  } elseif {[string index $x 0]=="-"} {
    error "unknown option \"$x\""
  } elseif {[info exists url]} {
    error "unknown argument \"$x\""
  } else {
    set url $x
  }
}
if {![info exists url]} {
  error "Usage: $argv0 [-threads N] URL"
}
if {![regexp {^https?://([^/:]+)(:\d+)?(/.*)$} $url all domain port path]} {
  error "could not parse the URL [list $url] -- should be of the\
         form \"http://domain/path\""
}
set useragent {Mozilla/5.0 (fossil-stress.tcl) Gecko/20100101 Firefox/57.0}
set path [string trimright $path /]
set port [string trimleft $port :]
if {$port==""} {set port 80}

proc send_one_request {tid domain port path} {
  while {[catch {
    set x [socket $domain $port]
    fconfigure $x -translation binary -blocking 0
    puts $x "GET $path HTTP/1.0\r"
    if {$port==80} {
      puts $x "Host: $domain\r"
    } else {
      puts $x "Host: $domain:$port\r"
    }
    puts $x "User-Agent: $::useragent\r"
    puts $x "Accept: text/html,q=0.9,*/*;q=0.8\r"
    puts $x "Accept-Language: en-US,en;q=0.5\r"
    puts $x "Connection: close\r"
    puts $x "\r"
  } msg]} {
    puts "ERROR: $msg"
    after 1000
  }
  global cnt stime threadid
  set cnt($x) 0
  set stime($x) [clock seconds]
  set threadid($x) $tid
  flush $x
  fileevent $x readable [list get_reply $tid $path $x]
}

proc close_connection {x} {
  global cnt stime tid
  close $x
  unset -nocomplain cnt($x)
  unset -nocomplain stime($x)
  unset -nocomplain threadid($x)
}

proc get_reply {tid info x} {
  global cnt
  if {[eof $x]} {
    puts "[format %3d: $tid] $info ($cnt($x) bytes)"
    flush stdout
    close_connection $x
    start_another_request $tid
  } else {
    incr cnt($x) [string length [read $x]]
  }
}

set pages {
  /timeline?n=20
  /timeline?n=20&a=1970-01-01
  /home
  /brlist
  /info/trunk
  /info/2015-01-01
  /vdiff?from=2015-01-01&to=trunk&diff=0
  /wcontent
  /fileage
  /dir
  /tree
  /uvlist
  /stat
  /test_env
  /sitemap
  /hash-collisions
  /artifact_stats
  /bloblist
  /bigbloblist
  /wiki_rules
  /md_rules
  /help
  /test-all-help
  /timewarps
  /taglist
}

set pageidx 0
proc start_another_request {tid} {
  global pages pageidx domain port path
  set p [lindex $pages $pageidx]
  incr pageidx
  if {$pageidx>=[llength $pages]} {set pageidx 0}
  send_one_request $tid $domain $port $path$p
}

proc unhang_stalled_threads {} {
  global stime threadid
  set now [clock seconds]
  # puts "checking for stalled threads...."
  foreach x [array names stime] {
    # puts -nonewline " $threadid($x)=[expr {$now-$stime($x)}]"
    if {$stime($x)+0<$now-10} {
      set t $threadid($x)
      puts "RESTART thread $t"
      flush stdout
      close_connection $x
      start_another_request $t
    }
  }
  # puts ""
  flush stdout
  after 10000 unhang_stalled_threads
}

unhang_stalled_threads
for {set i 1} {$i<=$nthread} {incr i} {
  start_another_request $i
}
vwait forever
Deleted tools/fossil_chat.tcl.
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#!/home/drh/bin/tobe
#
# Simple chat client for Tcl/Tk.
#
package require Tk

set SERVERHOST fossil-scm.hwaci.com
# set SERVERHOST 127.0.0.1
#set SERVERHOST 64.5.53.192
set SERVERPORT 8615

# set to correct values if you have to use a proxy
set PROXYHOST {}
set PROXYPORT {}

# Setup the user interface
wm title . Fossil-Chat
wm iconname . [wm title .]

menu .mb -type menubar
if {$tcl_platform(platform)=="unix" && $tcl_platform(os)!="Darwin"} {
  pack .mb -side top -fill x
} else {
  . config -menu .mb
}
.mb add cascade -label File -underline 0 -menu .mb.file
menu .mb.file -tearoff 0
.mb.file add command -label Send -command send_message
.mb.file add command -label {Remove older messages} -command cleanup_record
.mb.file add separator
.mb.file add command -label {Exit} -command exit

frame .who
pack .who -side right -anchor n -fill y
label .who.title -text {Users:      }
pack .who.title -side top -anchor nw
label .who.list -anchor w -justify left -text {}
pack .who.list -side top -anchor nw -expand 1 -padx 5
label .who.time -text {} -justify right
proc update_time {} {
  after 1000 update_time
  set now [clock seconds]
  set time [clock format $now -format %H:%M -gmt 1]
  .who.time config -text "UTC: $time"
}
update_time
pack .who.time -side bottom -anchor sw

frame .input
pack .input -side bottom -fill x
text .input.t -bd 1 -relief sunken -bg white -fg black -width 60 -height 3 \
   -wrap word -yscrollcommand [list .input.sb set] -takefocus 1
bind .input.t <Key-Return> {send_message; break}
pack .input.t -side left -fill both -expand 1
scrollbar .input.sb -orient vertical -command [list .input.t yview]
pack .input.sb -side left -fill y

frame .msg
pack .msg -side top -fill both -expand 1
text .msg.t -bd 1 -relief sunken -bg white -fg black -width 60 -height 20 \
   -wrap word -yscrollcommand [list .msg.sb set] -takefocus 0
bindtags .msg.t [list .msg.t . all]
.msg.t tag config error -foreground red
.msg.t tag config meta -foreground forestgreen
.msg.t tag config norm -foreground black
pack .msg.t -side left -fill both -expand 1
scrollbar .msg.sb -orient vertical -command [list .msg.t yview]
pack .msg.sb -side left -fill y

update

# Send periodic messages to keep the TCP/IP link up
#
proc keep_alive {} {
  global TIMER SOCKET
  catch {after cancel $TIMER}
  set TIMER [after 300000 keep_alive]
  catch {puts $SOCKET noop; flush $SOCKET}
}

# Connect to the server
proc connect {} {
  global SOCKET tcl_platform
  catch {close $SOCKET}
  if {[catch {
      if {$::PROXYHOST ne {}} {
          set SOCKET [socket $::PROXYHOST $::PROXYPORT]
          puts $SOCKET "CONNECT $::SERVERHOST:$::SERVERPORT HTTP/1.1"
          puts $SOCKET "Host:  $::SERVERHOST:$::SERVERPORT" 
          puts $SOCKET ""
      } else {
          set SOCKET [socket $::SERVERHOST $::SERVERPORT]
      }
    fconfigure $SOCKET -translation binary -blocking 0
    puts $SOCKET [list login $tcl_platform(user) fact,fuzz]
    flush $SOCKET
    fileevent $SOCKET readable handle_input
    keep_alive
  } errmsg]} {
    if {[tk_messageBox -icon error -type yesno -parent . -message \
           "Unable to connect to server.  $errmsg.\n\nTry again?"]=="yes"} {
      after 100 connect
    }
  }
}
connect

# Send the message text contained in the .input.t widget to the server.
#
proc send_message {} {
  set txt [.input.t get 1.0 end]
  .input.t delete 1.0 end
  regsub -all "\[ \t\n\f\r\]+" [string trim $txt] { } txt
  if {$txt==""} return
  global SOCKET
  puts $SOCKET [list message $txt]
  flush $SOCKET
}

.mb add cascade -label "Transfer" -underline 0 -menu .mb.files
menu .mb.files -tearoff 0
.mb.files add command -label "Send file..." -command send_file
.mb.files add command -label "Delete files" -command delete_files \
    -state disabled
.mb.files add separator

# Encode a string (possibly containing binary and \000 characters) into
# single line of text.
#
proc encode {txt} {
  return [string map [list % %25 + %2b " " + \n %0a \t %09 \000 %00] $txt]
}

# Undo the work of encode.  Convert an encoded string back into its original
# form.
#
proc decode {txt} {
  return [string map [list %00 \000 %09 \t %0a \n + " " %2b + %25 %] $txt]
}

# Delete all of the downloaded files we are currently holding.
#
proc delete_files {} {
  global FILES
  .mb.files delete 3 end
  array unset FILES
  .mb.files entryconfigure 1 -state disabled 
}

# Prompt the user to select a file from the disk.  Then send that
# file to all chat participants.
#
proc send_file {} {
  global SOCKET
  set openfile [tk_getOpenFile]
  if {$openfile==""} return
  set f [open $openfile]
  fconfigure $f -translation binary
  set data [read $f]
  close $f
  puts $SOCKET [list file [file tail $openfile] [encode $data]]
  flush $SOCKET
  set time [clock format [clock seconds] -format {%H:%M} -gmt 1]
  .msg.t insert end "\[$time\] sent file [file tail $openfile]\
        - [string length $data] bytes\n" meta
  .msg.t see end
}

# Save the named file to the disk.
#
 proc save_file {filename} {
  global FILES
  set savefile [tk_getSaveFile -initialfile $filename]
  if {$savefile==""} return
  set f [open $savefile w]
  fconfigure $f -translation binary
  puts -nonewline $f [decode $FILES($filename)]
  close $f
}

# Handle a "file" message from the chat server.
#
proc handle_file {from filename data} {
  global FILES
  foreach prior [array names FILES] {
    if {$filename==$prior} break
  }
  if {![info exists prior] || $filename!=$prior} {
    .mb.files add command -label "Save \"$filename\"" \
        -command [list save_file $filename]
  }
  set FILES($filename) $data
  .mb.files entryconfigure 1 -state active 
  set time [clock format [clock seconds] -format {%H:%M} -gmt 1]
  .msg.t insert end "\[$time $from\] " meta "File: \"$filename\"\n" norm
  .msg.t see end
}

# Handle input from the server
#
proc handle_input {} {
  global SOCKET
  if {[eof $SOCKET]} {
    disconnect
    return
  }
  set line [gets $SOCKET]
  if {$line==""} return
  set cmd [lindex $line 0]
  if {$cmd=="userlist"} {
    set ulist {}
    foreach u [lrange $line 1 end] {
      append ulist $u\n
    }
    .who.list config -text [string trim $ulist]
  } elseif {$cmd=="message"} {
    set time [clock format [clock seconds] -format {%H:%M} -gmt 1]
    set from [lindex $line 1]
    .msg.t insert end "\[$time $from\] " meta [lindex $line 2]\n norm
    .msg.t see end
    bell
    wm deiconify .
    update
    raise .
  } elseif {$cmd=="noop"} {
    # do nothing
  } elseif {$cmd=="meta"} {
    set now [clock seconds]
    set time [clock format $now -format {%H:%M} -gmt 1]
    .msg.t insert end "\[$time\] [lindex $line 1]\n" meta
    .msg.t see end
  } elseif {$cmd=="file"} {
    if {[info commands handle_file]=="handle_file"} {
      handle_file [lindex $line 1] [lindex $line 2] [lindex $line 3]
    }
  }
}    

# Handle a broken socket connection
#
proc disconnect {} {
  global SOCKET
  close $SOCKET
  set q [tk_messageBox -icon error -type yesno -parent . -message \
           "TCP/IP link lost.  Try to reconnet?"]
  if {$q=="yes"} {
    connect
  } else {
    exit
  }
}

# Remove all but the most recent 100 message from the message log
#
proc cleanup_record {} {
  .msg.t delete 1.0 {end -100 lines}
}
Added tools/fossilwiki.




































































































































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#!/usr/bin/perl
# vim: cin :

$repofile = shift;
$repocmd = '';
$repocmd = "-R $repofile" if -f $repofile;
$mainpage = '';

@rep = ();
if ( ! -f $repofile )
{
	@rep = `fossil info | grep 'project-name'`;
}
else
{
	@rep = `fossil info $repofile | grep 'project-name'`;
}

$mainpage = $rep[0];
chomp $mainpage;
$mainpage =~ s/^project-name:\s+//;


@pages = `fossil wiki list $repocmd`;

%pages = ();
foreach $page ( @pages )
{
	chomp $page;
	$text = `fossil wiki export "$page" $repocmd`;
	$pages{$page} = $text;
}

@orphans = ();
@nointernals = ();
@terminals = ();
@empties = ();
%badlinks = ();
%alllinks = ();
%links = ();
foreach $page ( keys %pages )
{
	my @links = ();
	my $text = $pages{$page};
	while ( $text =~ m/\[([^][]+)\]/g )
	{
		push @links,$1;
	}

	$numlinks = $#links;

	if (@links == ())
	{
		push @terminals, $page;
	}
	else
	{
		my @internals = grep { $_ !~ /(http:)|(mailto:)|(https:)/ } @links;
		if (@internals == ())
		{
			push @nointernals, $page;
		}
		else
		{
			@{$links{$page}{'links'}} = map {my ($a,$b) = split /\|/; $a;} @internals;
			foreach $internal ( @internals )
			{
				my ($int_link, $display) = split /\|/, $internal;
				${$links{$int_link}{'refs'}}++;
				$alllinks{$int_link} = 1;
			}
		}
	}

	if ($text eq '' || $text =~ m/^<i>Empty Page<\/i>/)
	{
		chomp $tail;
		my ($head, $tail) = split /\/i>/ , $text;
		if ($tail =~ m/^\s*$/s) {
		 	push @empties, $page;
		}
	}
}
foreach $page ( keys %links )
{
	if ($page ne $mainpage &&  (${$links{$page}{'refs'}} == 0))
	{
		push @orphans, $page;
	}
}
foreach $link (keys %alllinks )
{
	if (! exists($pages{$link}) && $link !~ /^\./ && $link !~ /^\//)
	{
		$badlinks{$link} = 1;
	}
}
foreach $empty ( @empties )
{
	print ("empty: '$empty'\n");
}
foreach $nointernals ( @nointernals )
{
	print ("nointernals: '$nointernals'\n");
}
foreach $terminal ( @terminals )
{
	print ("terminal: '$terminal'\n");
}
foreach $orphan ( @orphans )
{
	print ("orphan: '$orphan'\n");
}
foreach $link ( keys %badlinks )
{
	print ("badlink: '$link'\n");
}
foreach $page ( sort keys %links )
{
	my @links = @{$links{$page}{'links'}};
	if (@links != ())
	{
		if ($page eq $mainpage)
		{
			print "links: *** '$page' *** -> ", join (", ", @links), "\n";
		}
		else
		{
			print "links: '$page' -> ", join (", ", @links), "\n";
		}
	}
}
Added tools/fslsrv.



























































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#!/bin/bash
FOSSIL=fossil
PGARGS="-P 1"
OLDPID=`pgrep -P 1 fossil`
SITE=https://example.com
PORT=12345

if [ "$1" = "-f" ] ; then PGARGS= ; shift ; fi

if [ -n "$OLDPID" ]
then
    echo "Killing running Fossil server first..."
    pkill $PGARGS fossil

    for i in $(seq 30)
    do
        if [ -n "$(pgrep $PGARGS fossil)" ]
        then
            if [ $i -eq 1 ]
            then
                echo -n "Waiting for it to die..."
            else
                echo -n .
            fi
            sleep '0.1'
        else
            break
        fi
        echo
    done

    killall -9 fossil 2> /dev/null
fi

if [ -x ./fossil ]
then
    # We're running from a build tree, so use that version instead
    FOSSIL=./fossil
fi

function start_one() {
    bn=$1
    ln="$2"

    $FOSSIL server $extra \
        --scgi \
        --localhost \
        --port $PORT \
        --jsmode bundled \
        --baseurl ${SITE}/$bn \
        --errorlog ~/log/fossil/$bn-errors.log \
        ~/museum/$bn.fossil > ~/log/fossil/$bn-stdout.log &
    echo Started $ln Fossil server, port $PORT, PID $!.
    PORT=$(($PORT + 1))
}

start_one first  "First Project"
start_one second "Second Project"
start_one third  "Third Project"
Added tools/makeheaders.c.

















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** Copyright 1993 D. Richard Hipp. All rights reserved.
**
** Redistribution and use in source and binary forms, with or
** without modification, are permitted provided that the following
** conditions are met:
**
**   1. Redistributions of source code must retain the above copyright
**      notice, this list of conditions and the following disclaimer.
**
**   2. Redistributions in binary form must reproduce the above copyright
**      notice, this list of conditions and the following disclaimer in
**      the documentation and/or other materials provided with the
**      distribution.
**
** This software is provided "as is" and any express or implied warranties,
** including, but not limited to, the implied warranties of merchantability
** and fitness for a particular purpose are disclaimed.  In no event shall
** the author or contributors be liable for any direct, indirect, incidental,
** special, exemplary, or consequential damages (including, but not limited
** to, procurement of substitute goods or services; loss of use, data or
** profits; or business interruption) however caused and on any theory of
** liability, whether in contract, strict liability, or tort (including
** negligence or otherwise) arising in any way out of the use of this
** software, even if advised of the possibility of such damage.
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <memory.h>
#include <sys/stat.h>
#include <assert.h>
#include <string.h>

#if defined( __MINGW32__) || defined(__DMC__)   || \
    defined(_MSC_VER)     || defined(__POCC__)
#  ifndef WIN32
#    define WIN32
#  endif
#else
# include <unistd.h>
#endif

/*
** Macros for debugging.
*/
#ifdef DEBUG
static int debugMask = 0;
# define debug0(F,M)       if( (F)&debugMask ){ fprintf(stderr,M); }
# define debug1(F,M,A)     if( (F)&debugMask ){ fprintf(stderr,M,A); }
# define debug2(F,M,A,B)   if( (F)&debugMask ){ fprintf(stderr,M,A,B); }
# define debug3(F,M,A,B,C) if( (F)&debugMask ){ fprintf(stderr,M,A,B,C); }
# define PARSER      0x00000001
# define DECL_DUMP   0x00000002
# define TOKENIZER   0x00000004
#else
# define debug0(Flags, Format)
# define debug1(Flags, Format, A)
# define debug2(Flags, Format, A, B)
# define debug3(Flags, Format, A, B, C)
#endif

/*
** The following macros are purely for the purpose of testing this
** program on itself.  They don't really contribute to the code.
*/
#define INTERFACE 1
#define EXPORT_INTERFACE 1
#define EXPORT

/*
** Each token in a source file is represented by an instance of
** the following structure.  Tokens are collected onto a list.
*/
typedef struct Token Token;
struct Token {
  const char *zText;      /* The text of the token */
  int nText;              /* Number of characters in the token's text */
  int eType;              /* The type of this token */
  int nLine;              /* The line number on which the token starts */
  Token *pComment;        /* Most recent block comment before this token */
  Token *pNext;           /* Next token on the list */
  Token *pPrev;           /* Previous token on the list */
};

/*
** During tokenization, information about the state of the input
** stream is held in an instance of the following structure
*/
typedef struct InStream InStream;
struct InStream {
  const char *z;          /* Complete text of the input */
  int i;                  /* Next character to read from the input */
  int nLine;              /* The line number for character z[i] */
};

/*
** Each declaration in the C or C++ source files is parsed out and stored as
** an instance of the following structure.
**
** A "forward declaration" is a declaration that an object exists that
** doesn't tell about the objects structure.  A typical forward declaration
** is:
**
**          struct Xyzzy;
**
** Not every object has a forward declaration.  If it does, thought, the
** forward declaration will be contained in the zFwd field for C and
** the zFwdCpp for C++.  The zDecl field contains the complete
** declaration text.
*/
typedef struct Decl Decl;
struct Decl {
  char *zName;       /* Name of the object being declared.  The appearance
                     ** of this name is a source file triggers the declaration
                     ** to be added to the header for that file. */
  const char *zFile; /* File from which extracted.  */
  char *zIf;         /* Surround the declaration with this #if */
  char *zFwd;        /* A forward declaration.  NULL if there is none. */
  char *zFwdCpp;     /* Use this forward declaration for C++. */
  char *zDecl;       /* A full declaration of this object */
  char *zExtra;      /* Extra declaration text inserted into class objects */
  int extraType;     /* Last public:, protected: or private: in zExtraDecl */
  struct Include *pInclude;   /* #includes that come before this declaration */
  int flags;         /* See the "Properties" below */
  Token *pComment;   /* A block comment associated with this declaration */
  Token tokenCode;   /* Implementation of functions and procedures */
  Decl *pSameName;   /* Next declaration with the same "zName" */
  Decl *pSameHash;   /* Next declaration with same hash but different zName */
  Decl *pNext;       /* Next declaration with a different name */
};

/*
** Properties associated with declarations.
**
** DP_Forward and DP_Declared are used during the generation of a single
** header file in order to prevent duplicate declarations and definitions.
** DP_Forward is set after the object has been given a forward declaration
** and DP_Declared is set after the object gets a full declarations.
** (Example:  A forward declaration is "typedef struct Abc Abc;" and the
** full declaration is "struct Abc { int a; float b; };".)
**
** The DP_Export and DP_Local flags are more permanent.  They mark objects
** that have EXPORT scope and LOCAL scope respectively.  If both of these
** marks are missing, then the object has library scope.  The meanings of
** the scopes are as follows:
**
**    LOCAL scope         The object is only usable within the file in
**                        which it is declared.
**
**    library scope       The object is visible and usable within other
**                        files in the same project.  By if the project is
**                        a library, then the object is not visible to users
**                        of the library.  (i.e. the object does not appear
**                        in the output when using the -H option.)
**
**    EXPORT scope        The object is visible and usable everywhere.
**
** The DP_Flag is a temporary use flag that is used during processing to
** prevent an infinite loop.  It's use is localized.
**
** The DP_Cplusplus, DP_ExternCReqd and DP_ExternReqd flags are permanent
** and are used to specify what type of declaration the object requires.
*/
#define DP_Forward      0x001   /* Has a forward declaration in this file */
#define DP_Declared     0x002   /* Has a full declaration in this file */
#define DP_Export       0x004   /* Export this declaration */
#define DP_Local        0x008   /* Declare in its home file only */
#define DP_Flag         0x010   /* Use to mark a subset of a Decl list
                                ** for special processing */
#define DP_Cplusplus    0x020   /* Has C++ linkage and cannot appear in a
                                ** C header file */
#define DP_ExternCReqd  0x040   /* Prepend 'extern "C"' in a C++ header.
                                ** Prepend nothing in a C header */
#define DP_ExternReqd   0x080   /* Prepend 'extern "C"' in a C++ header if
                                ** DP_Cplusplus is not also set. If DP_Cplusplus
                                ** is set or this is a C header then
                                ** prepend 'extern' */

/*
** Convenience macros for dealing with declaration properties
*/
#define DeclHasProperty(D,P)    (((D)->flags&(P))==(P))
#define DeclHasAnyProperty(D,P) (((D)->flags&(P))!=0)
#define DeclSetProperty(D,P)    (D)->flags |= (P)
#define DeclClearProperty(D,P)  (D)->flags &= ~(P)

/*
** These are state properties of the parser.  Each of the values is
** distinct from the DP_ values above so that both can be used in
** the same "flags" field.
**
** Be careful not to confuse PS_Export with DP_Export or
** PS_Local with DP_Local.  Their names are similar, but the meanings
** of these flags are very different.
*/
#define PS_Extern        0x000800    /* "extern" has been seen */
#define PS_Export        0x001000    /* If between "#if EXPORT_INTERFACE"
                                     ** and "#endif" */
#define PS_Export2       0x002000    /* If "EXPORT" seen */
#define PS_Typedef       0x004000    /* If "typedef" has been seen */
#define PS_Static        0x008000    /* If "static" has been seen */
#define PS_Interface     0x010000    /* If within #if INTERFACE..#endif */
#define PS_Method        0x020000    /* If "::" token has been seen */
#define PS_Local         0x040000    /* If within #if LOCAL_INTERFACE..#endif */
#define PS_Local2        0x080000    /* If "LOCAL" seen. */
#define PS_Public        0x100000    /* If "PUBLIC" seen. */
#define PS_Protected     0x200000    /* If "PROTECTED" seen. */
#define PS_Private       0x400000    /* If "PRIVATE" seen. */
#define PS_PPP           0x700000    /* If any of PUBLIC, PRIVATE, PROTECTED */

/*
** The following set of flags are ORed into the "flags" field of
** a Decl in order to identify what type of object is being
** declared.
*/
#define TY_Class         0x00100000
#define TY_Subroutine    0x00200000
#define TY_Macro         0x00400000
#define TY_Typedef       0x00800000
#define TY_Variable      0x01000000
#define TY_Structure     0x02000000
#define TY_Union         0x04000000
#define TY_Enumeration   0x08000000
#define TY_Defunct       0x10000000  /* Used to erase a declaration */

/*
** Each nested #if (or #ifdef or #ifndef) is stored in a stack of
** instances of the following structure.
*/
typedef struct Ifmacro Ifmacro;
struct Ifmacro {
  int nLine;         /* Line number where this macro occurs */
  char *zCondition;  /* Text of the condition for this macro */
  Ifmacro *pNext;    /* Next down in the stack */
  int flags;         /* Can hold PS_Export, PS_Interface or PS_Local flags */
};

/*
** When parsing a file, we need to keep track of what other files have
** be #include-ed.  For each #include found, we create an instance of
** the following structure.
*/
typedef struct Include Include;
struct Include {
  char *zFile;       /* The name of file include.  Includes "" or <> */
  char *zIf;         /* If not NULL, #include should be enclosed in #if */
  char *zLabel;      /* A unique label used to test if this #include has
                      * appeared already in a file or not */
  Include *pNext;    /* Previous include file, or NULL if this is the first */
};

/*
** Identifiers found in a source file that might be used later to provoke
** the copying of a declaration into the corresponding header file are
** stored in a hash table as instances of the following structure.
*/
typedef struct Ident Ident;
struct Ident {
  char *zName;        /* The text of this identifier */
  Ident *pCollide;    /* Next identifier with the same hash */
  Ident *pNext;       /* Next identifier in a list of them all */
};

/*
** A complete table of identifiers is stored in an instance of
** the next structure.
*/
#define IDENT_HASH_SIZE 2237
typedef struct IdentTable IdentTable;
struct IdentTable {
  Ident *pList;                     /* List of all identifiers in this table */
  Ident *apTable[IDENT_HASH_SIZE];  /* The hash table */
};

/*
** The following structure holds all information for a single
** source file named on the command line of this program.
*/
typedef struct InFile InFile;
struct InFile {
  char *zSrc;              /* Name of input file */
  char *zHdr;              /* Name of the generated .h file for this input.
                           ** Will be NULL if input is to be scanned only */
  int flags;               /* One or more DP_, PS_ and/or TY_ flags */
  InFile *pNext;           /* Next input file in the list of them all */
  IdentTable idTable;      /* All identifiers in this input file */
};

/*
** An unbounded string is able to grow without limit.  We use these
** to construct large in-memory strings from lots of smaller components.
*/
typedef struct String String;
struct String {
  int nAlloc;      /* Number of bytes allocated */
  int nUsed;       /* Number of bytes used (not counting nul terminator) */
  char *zText;     /* Text of the string */
};

/*
** The following structure contains a lot of state information used
** while generating a .h file.  We put the information in this structure
** and pass around a pointer to this structure, rather than pass around
** all of the information separately.  This helps reduce the number of
** arguments to generator functions.
*/
typedef struct GenState GenState;
struct GenState {
  String *pStr;          /* Write output to this string */
  IdentTable *pTable;    /* A table holding the zLabel of every #include that
                          * has already been generated.  Used to avoid
                          * generating duplicate #includes. */
  const char *zIf;       /* If not NULL, then we are within a #if with
                          * this argument. */
  int nErr;              /* Number of errors */
  const char *zFilename; /* Name of the source file being scanned */
  int flags;             /* Various flags (DP_ and PS_ flags above) */
};

/*
** The following text line appears at the top of every file generated
** by this program.  By recognizing this line, the program can be sure
** never to read a file that it generated itself.
**
** The "#undef INTERFACE" part is a hack to work around a name collision
** in MSVC 2008.
*/
const char zTopLine[] =
  "/* \aThis file was automatically generated.  Do not edit! */\n"
  "#undef INTERFACE\n";
#define nTopLine (sizeof(zTopLine)-1)

/*
** The name of the file currently being parsed.
*/
static const char *zFilename;

/*
** The stack of #if macros for the file currently being parsed.
*/
static Ifmacro *ifStack = 0;

/*
** A list of all files that have been #included so far in a file being
** parsed.
*/
static Include *includeList = 0;

/*
** The last block comment seen.
*/
static Token *blockComment = 0;

/*
** The following flag is set if the -doc flag appears on the
** command line.
*/
static int doc_flag = 0;

/*
** If the following flag is set, then makeheaders will attempt to
** generate prototypes for static functions and procedures.
*/
static int proto_static = 0;

/*
** A list of all declarations.  The list is held together using the
** pNext field of the Decl structure.
*/
static Decl *pDeclFirst;    /* First on the list */
static Decl *pDeclLast;     /* Last on the list */

/*
** A hash table of all declarations
*/
#define DECL_HASH_SIZE 3371
static Decl *apTable[DECL_HASH_SIZE];

/*
** The TEST macro must be defined to something.  Make sure this is the
** case.
*/
#ifndef TEST
# define TEST 0
#endif

#ifdef NOT_USED
/*
** We do our own assertion macro so that we can have more control
** over debugging.
*/
#define Assert(X)    if(!(X)){ CantHappen(__LINE__); }
#define CANT_HAPPEN  CantHappen(__LINE__)
static void CantHappen(int iLine){
  fprintf(stderr,"Assertion failed on line %d\n",iLine);
  *(char*)1 = 0;  /* Force a core-dump */
}
#endif

/*
** Memory allocation functions that are guaranteed never to return NULL.
*/
static void *SafeMalloc(int nByte){
  void *p = malloc( nByte );
  if( p==0 ){
    fprintf(stderr,"Out of memory.  Can't allocate %d bytes.\n",nByte);
    exit(1);
  }
  return p;
}
static void SafeFree(void *pOld){
  if( pOld ){
    free(pOld);
  }
}
static void *SafeRealloc(void *pOld, int nByte){
  void *p;
  if( pOld==0 ){
    p = SafeMalloc(nByte);
  }else{
    p = realloc(pOld, nByte);
    if( p==0 ){
      fprintf(stderr,
        "Out of memory.  Can't enlarge an allocation to %d bytes\n",nByte);
      exit(1);
    }
  }
  return p;
}
static char *StrDup(const char *zSrc, int nByte){
  char *zDest;
  if( nByte<=0 ){
    nByte = strlen(zSrc);
  }
  zDest = SafeMalloc( nByte + 1 );
  strncpy(zDest,zSrc,nByte);
  zDest[nByte] = 0;
  return zDest;
}

/*
** Return TRUE if the character X can be part of an identifier
*/
#define ISALNUM(X)  ((X)=='_' || isalnum(X))

/*
** Routines for dealing with unbounded strings.
*/
static void StringInit(String *pStr){
  pStr->nAlloc = 0;
  pStr->nUsed = 0;
  pStr->zText = 0;
}
static void StringReset(String *pStr){
  SafeFree(pStr->zText);
  StringInit(pStr);
}
static void StringAppend(String *pStr, const char *zText, int nByte){
  if( nByte<=0 ){
    nByte = strlen(zText);
  }
  if( pStr->nUsed + nByte >= pStr->nAlloc ){
    if( pStr->nAlloc==0 ){
      pStr->nAlloc = nByte + 100;
      pStr->zText = SafeMalloc( pStr->nAlloc );
    }else{
      pStr->nAlloc = pStr->nAlloc*2 + nByte;
      pStr->zText = SafeRealloc(pStr->zText, pStr->nAlloc);
    }
  }
  strncpy(&pStr->zText[pStr->nUsed],zText,nByte);
  pStr->nUsed += nByte;
  pStr->zText[pStr->nUsed] = 0;
}
#define StringGet(S) ((S)->zText?(S)->zText:"")

/*
** Compute a hash on a string.  The number returned is a non-negative
** value between 0 and 2**31 - 1
*/
static int Hash(const char *z, int n){
  int h = 0;
  if( n<=0 ){
    n = strlen(z);
  }
  while( n-- ){
    h = h ^ (h<<5) ^ *z++;
  }
  return h & 0x7fffffff;
}

/*
** Given an identifier name, try to find a declaration for that
** identifier in the hash table.  If found, return a pointer to
** the Decl structure.  If not found, return 0.
*/
static Decl *FindDecl(const char *zName, int len){
  int h;
  Decl *p;

  if( len<=0 ){
    len = strlen(zName);
  }
  h = Hash(zName,len) % DECL_HASH_SIZE;
  p = apTable[h];
  while( p && (strncmp(p->zName,zName,len)!=0 || p->zName[len]!=0) ){
    p = p->pSameHash;
  }
  return p;
}

/*
** Install the given declaration both in the hash table and on
** the list of all declarations.
*/
static void InstallDecl(Decl *pDecl){
  int h;
  Decl *pOther;

  h = Hash(pDecl->zName,0) % DECL_HASH_SIZE;
  pOther = apTable[h];
  while( pOther && strcmp(pDecl->zName,pOther->zName)!=0 ){
    pOther = pOther->pSameHash;
  }
  if( pOther ){
    pDecl->pSameName = pOther->pSameName;
    pOther->pSameName = pDecl;
  }else{
    pDecl->pSameName = 0;
    pDecl->pSameHash = apTable[h];
    apTable[h] = pDecl;
  }
  pDecl->pNext = 0;
  if( pDeclFirst==0 ){
    pDeclFirst = pDeclLast = pDecl;
  }else{
    pDeclLast->pNext = pDecl;
    pDeclLast = pDecl;
  }
}

/*
** Look at the current ifStack.  If anything declared at the current
** position must be surrounded with
**
**      #if   STUFF
**      #endif
**
** Then this routine computes STUFF and returns a pointer to it.  Memory
** to hold the value returned is obtained from malloc().
*/
static char *GetIfString(void){
  Ifmacro *pIf;
  char *zResult = 0;
  int hasIf = 0;
  String str;

  for(pIf = ifStack; pIf; pIf=pIf->pNext){
    if( pIf->zCondition==0 || *pIf->zCondition==0 ) continue;
    if( !hasIf ){
      hasIf = 1;
      StringInit(&str);
    }else{
      StringAppend(&str," && ",4);
    }
    StringAppend(&str,pIf->zCondition,0);
  }
  if( hasIf ){
    zResult = StrDup(StringGet(&str),0);
    StringReset(&str);
  }else{
    zResult = 0;
  }
  return zResult;
}

/*
** Create a new declaration and put it in the hash table.  Also
** return a pointer to it so that we can fill in the zFwd and zDecl
** fields, and so forth.
*/
static Decl *CreateDecl(
  const char *zName,       /* Name of the object being declared. */
  int nName                /* Length of the name */
){
  Decl *pDecl;

  pDecl = SafeMalloc( sizeof(Decl) + nName + 1);
  memset(pDecl,0,sizeof(Decl));
  pDecl->zName = (char*)&pDecl[1];
  memcpy(pDecl->zName, zName, nName);
  pDecl->zName[nName] = 0;
  pDecl->zFile = zFilename;
  pDecl->pInclude = includeList;
  pDecl->zIf = GetIfString();
  InstallDecl(pDecl);
  return pDecl;
}

/*
** Insert a new identifier into an table of identifiers.  Return TRUE if
** a new identifier was inserted and return FALSE if the identifier was
** already in the table.
*/
static int IdentTableInsert(
  IdentTable *pTable,       /* The table into which we will insert */
  const char *zId,          /* Name of the identifiers */
  int nId                   /* Length of the identifier name */
){
  int h;
  Ident *pId;

  if( nId<=0 ){
    nId = strlen(zId);
  }
  h = Hash(zId,nId) % IDENT_HASH_SIZE;
  for(pId = pTable->apTable[h]; pId; pId=pId->pCollide){
    if( strncmp(zId,pId->zName,nId)==0 && pId->zName[nId]==0 ){
      /* printf("Already in table: %.*s\n",nId,zId); */
      return 0;
    }
  }
  pId = SafeMalloc( sizeof(Ident) + nId + 1 );
  pId->zName = (char*)&pId[1];
  memcpy(pId->zName, zId, nId);
  pId->zName[nId] = 0;
  pId->pNext = pTable->pList;
  pTable->pList = pId;
  pId->pCollide = pTable->apTable[h];
  pTable->apTable[h] = pId;
  /* printf("Add to table: %.*s\n",nId,zId); */
  return 1;
}

/*
** Check to see if the given value is in the given IdentTable.  Return
** true if it is and false if it is not.
*/
static int IdentTableTest(
  IdentTable *pTable,       /* The table in which to search */
  const char *zId,          /* Name of the identifiers */
  int nId                   /* Length of the identifier name */
){
  int h;
  Ident *pId;

  if( nId<=0 ){
    nId = strlen(zId);
  }
  h = Hash(zId,nId) % IDENT_HASH_SIZE;
  for(pId = pTable->apTable[h]; pId; pId=pId->pCollide){
    if( strncmp(zId,pId->zName,nId)==0 && pId->zName[nId]==0 ){
      return 1;
    }
  }
  return 0;
}

/*
** Remove every identifier from the given table.   Reset the table to
** its initial state.
*/
static void IdentTableReset(IdentTable *pTable){
  Ident *pId, *pNext;

  for(pId = pTable->pList; pId; pId = pNext){
    pNext = pId->pNext;
    SafeFree(pId);
  }
  memset(pTable,0,sizeof(IdentTable));
}

#ifdef DEBUG
/*
** Print the name of every identifier in the given table, one per line
*/
static void IdentTablePrint(IdentTable *pTable, FILE *pOut){
  Ident *pId;

  for(pId = pTable->pList; pId; pId = pId->pNext){
    fprintf(pOut,"%s\n",pId->zName);
  }
}
#endif

/*
** Read an entire file into memory.  Return a pointer to the memory.
**
** The memory is obtained from SafeMalloc and must be freed by the
** calling function.
**
** If the read fails for any reason, 0 is returned.
*/
static char *ReadFile(const char *zFilename){
  struct stat sStat;
  FILE *pIn;
  char *zBuf;
  int n;

  if( stat(zFilename,&sStat)!=0
#ifndef WIN32
    || !S_ISREG(sStat.st_mode)
#endif
  ){
    return 0;
  }
  pIn = fopen(zFilename,"r");
  if( pIn==0 ){
    return 0;
  }
  zBuf = SafeMalloc( sStat.st_size + 1 );
  n = fread(zBuf,1,sStat.st_size,pIn);
  zBuf[n] = 0;
  fclose(pIn);
  return zBuf;
}

/*
** Write the contents of a string into a file.  Return the number of
** errors
*/
static int WriteFile(const char *zFilename, const char *zOutput){
  FILE *pOut;
  pOut = fopen(zFilename,"w");
  if( pOut==0 ){
    return 1;
  }
  fwrite(zOutput,1,strlen(zOutput),pOut);
  fclose(pOut);
  return 0;
}

/*
** Major token types
*/
#define TT_Space           1   /* Contiguous white space */
#define TT_Id              2   /* An identifier */
#define TT_Preprocessor    3   /* Any C preprocessor directive */
#define TT_Comment         4   /* Either C or C++ style comment */
#define TT_Number          5   /* Any numeric constant */
#define TT_String          6   /* String or character constants. ".." or '.' */
#define TT_Braces          7   /* All text between { and a matching } */
#define TT_EOF             8   /* End of file */
#define TT_Error           9   /* An error condition */
#define TT_BlockComment    10  /* A C-Style comment at the left margin that
                                * spans multiple lines */
#define TT_Other           0   /* None of the above */

/*
** Get a single low-level token from the input file.  Update the
** file pointer so that it points to the first character beyond the
** token.
**
** A "low-level token" is any token except TT_Braces.  A TT_Braces token
** consists of many smaller tokens and is assembled by a routine that
** calls this one.
**
** The function returns the number of errors.  An error is an
** unterminated string or character literal or an unterminated
** comment.
**
** Profiling shows that this routine consumes about half the
** CPU time on a typical run of makeheaders.
*/
static int GetToken(InStream *pIn, Token *pToken){
  int i;
  const char *z;
  int cStart;
  int c;
  int startLine;   /* Line on which a structure begins */
  int nlisc = 0;   /* True if there is a new-line in a ".." or '..' */
  int nErr = 0;    /* Number of errors seen */

  z = pIn->z;
  i = pIn->i;
  pToken->nLine = pIn->nLine;
  pToken->zText = &z[i];
  switch( z[i] ){
    case 0:
      pToken->eType = TT_EOF;
      pToken->nText = 0;
      break;

    case '#':
      if( i==0 || z[i-1]=='\n' || (i>1 && z[i-1]=='\r' && z[i-2]=='\n')){
        /* We found a preprocessor statement */
        pToken->eType = TT_Preprocessor;
        i++;
        while( z[i]!=0 && z[i]!='\n' ){
          if( z[i]=='\\' ){
            i++;
            if( z[i]=='\n' ) pIn->nLine++;
          }
          i++;
        }
        pToken->nText = i - pIn->i;
      }else{
        /* Just an operator */
        pToken->eType = TT_Other;
        pToken->nText = 1;
      }
      break;

    case ' ':
    case '\t':
    case '\r':
    case '\f':
    case '\n':
      while( isspace(z[i]) ){
        if( z[i]=='\n' ) pIn->nLine++;
        i++;
      }
      pToken->eType = TT_Space;
      pToken->nText = i - pIn->i;
      break;

    case '\\':
      pToken->nText = 2;
      pToken->eType = TT_Other;
      if( z[i+1]=='\n' ){
        pIn->nLine++;
        pToken->eType = TT_Space;
      }else if( z[i+1]==0 ){
        pToken->nText = 1;
      }
      break;

    case '\'':
    case '\"':
      cStart = z[i];
      startLine = pIn->nLine;
      do{
        i++;
        c = z[i];
        if( c=='\n' ){
          if( !nlisc ){
            fprintf(stderr,
              "%s:%d: (warning) Newline in string or character literal.\n",
              zFilename, pIn->nLine);
            nlisc = 1;
          }
          pIn->nLine++;
        }
        if( c=='\\' ){
          i++;
          c = z[i];
          if( c=='\n' ){
            pIn->nLine++;
          }
        }else if( c==cStart ){
          i++;
          c = 0;
        }else if( c==0 ){
          fprintf(stderr, "%s:%d: Unterminated string or character literal.\n",
             zFilename, startLine);
          nErr++;
        }
      }while( c );
      pToken->eType = TT_String;
      pToken->nText = i - pIn->i;
      break;

    case '/':
      if( z[i+1]=='/' ){
        /* C++ style comment */
        while( z[i] && z[i]!='\n' ){ i++; }
        pToken->eType = TT_Comment;
        pToken->nText = i - pIn->i;
      }else if( z[i+1]=='*' ){
        /* C style comment */
        int isBlockComment = i==0 || z[i-1]=='\n';
        i += 2;
        startLine = pIn->nLine;
        while( z[i] && (z[i]!='*' || z[i+1]!='/') ){
          if( z[i]=='\n' ){
            pIn->nLine++;
            if( isBlockComment ){
              if( z[i+1]=='*' || z[i+2]=='*' ){
                 isBlockComment = 2;
              }else{
                 isBlockComment = 0;
              }
            }
          }
          i++;
        }
        if( z[i] ){
          i += 2;
        }else{
          isBlockComment = 0;
          fprintf(stderr,"%s:%d: Unterminated comment\n",
            zFilename, startLine);
          nErr++;
        }
        pToken->eType = isBlockComment==2 ? TT_BlockComment : TT_Comment;
        pToken->nText = i - pIn->i;
      }else{
        /* A divide operator */
        pToken->eType = TT_Other;
        pToken->nText = 1 + (z[i+1]=='+');
      }
      break;

    case '0':
      if( z[i+1]=='x' || z[i+1]=='X' ){
        /* A hex constant */
        i += 2;
        while( isxdigit(z[i]) ){ i++; }
      }else{
        /* An octal constant */
        while( isdigit(z[i]) ){ i++; }
      }
      pToken->eType = TT_Number;
      pToken->nText = i - pIn->i;
      break;

    case '1': case '2': case '3': case '4':
    case '5': case '6': case '7': case '8': case '9':
      while( isdigit(z[i]) ){ i++; }
      if( (c=z[i])=='.' ){
         i++;
         while( isdigit(z[i]) ){ i++; }
         c = z[i];
         if( c=='e' || c=='E' ){
           i++;
           if( ((c=z[i])=='+' || c=='-') && isdigit(z[i+1]) ){ i++; }
           while( isdigit(z[i]) ){ i++; }
           c = z[i];
         }
         if( c=='f' || c=='F' || c=='l' || c=='L' ){ i++; }
      }else if( c=='e' || c=='E' ){
         i++;
         if( ((c=z[i])=='+' || c=='-') && isdigit(z[i+1]) ){ i++; }
         while( isdigit(z[i]) ){ i++; }
      }else if( c=='L' || c=='l' ){
         i++;
         c = z[i];
         if( c=='u' || c=='U' ){ i++; }
      }else if( c=='u' || c=='U' ){
         i++;
         c = z[i];
         if( c=='l' || c=='L' ){ i++; }
      }
      pToken->eType = TT_Number;
      pToken->nText = i - pIn->i;
      break;

    case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
    case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
    case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
    case 'v': case 'w': case 'x': case 'y': case 'z': case 'A': case 'B':
    case 'C': case 'D': case 'E': case 'F': case 'G': case 'H': case 'I':
    case 'J': case 'K': case 'L': case 'M': case 'N': case 'O': case 'P':
    case 'Q': case 'R': case 'S': case 'T': case 'U': case 'V': case 'W':
    case 'X': case 'Y': case 'Z': case '_':
      while( isalnum(z[i]) || z[i]=='_' ){ i++; };
      pToken->eType = TT_Id;
      pToken->nText = i - pIn->i;
      break;

    case ':':
      pToken->eType = TT_Other;
      pToken->nText = 1 + (z[i+1]==':');
      break;

    case '=':
    case '<':
    case '>':
    case '+':
    case '-':
    case '*':
    case '%':
    case '^':
    case '&':
    case '|':
      pToken->eType = TT_Other;
      pToken->nText = 1 + (z[i+1]=='=');
      break;

    default:
      pToken->eType = TT_Other;
      pToken->nText = 1;
      break;
  }
  pIn->i += pToken->nText;
  return nErr;
}

/*
** This routine recovers the next token from the input file which is
** not a space or a comment or any text between an "#if 0" and "#endif".
**
** This routine returns the number of errors encountered.  An error
** is an unterminated token or unmatched "#if 0".
**
** Profiling shows that this routine uses about a quarter of the
** CPU time in a typical run.
*/
static int GetNonspaceToken(InStream *pIn, Token *pToken){
  int nIf = 0;
  int inZero = 0;
  const char *z;
  int value;
  int startLine;
  int nErr = 0;

  startLine = pIn->nLine;
  while( 1 ){
    nErr += GetToken(pIn,pToken);
    /* printf("%04d: Type=%d nIf=%d [%.*s]\n",
       pToken->nLine,pToken->eType,nIf,pToken->nText,
       pToken->eType!=TT_Space ? pToken->zText : "<space>"); */
    pToken->pComment = blockComment;
    switch( pToken->eType ){
      case TT_Comment:          /*0123456789 12345678 */
       if( strncmp(pToken->zText, "/*MAKEHEADERS-STOP", 18)==0 ) return nErr;
       break;

      case TT_Space:
        break;

      case TT_BlockComment:
        if( doc_flag ){
          blockComment = SafeMalloc( sizeof(Token) );
          *blockComment = *pToken;
        }
        break;

      case TT_EOF:
        if( nIf ){
          fprintf(stderr,"%s:%d: Unterminated \"#if\"\n",
             zFilename, startLine);
          nErr++;
        }
        return nErr;

      case TT_Preprocessor:
        z = &pToken->zText[1];
        while( *z==' ' || *z=='\t' ) z++;
        if( sscanf(z,"if %d",&value)==1 && value==0 ){
          nIf++;
          inZero = 1;
        }else if( inZero ){
          if( strncmp(z,"if",2)==0 ){
            nIf++;
          }else if( strncmp(z,"endif",5)==0 ){
            nIf--;
            if( nIf==0 ) inZero = 0;
          }
        }else{
          return nErr;
        }
        break;

      default:
        if( !inZero ){
          return nErr;
        }
        break;
    }
  }
  /* NOT REACHED */
}

/*
** This routine looks for identifiers (strings of contiguous alphanumeric
** characters) within a preprocessor directive and adds every such string
** found to the given identifier table
*/
static void FindIdentifiersInMacro(Token *pToken, IdentTable *pTable){
  Token sToken;
  InStream sIn;
  int go = 1;

  sIn.z = pToken->zText;
  sIn.i = 1;
  sIn.nLine = 1;
  while( go && sIn.i < pToken->nText ){
    GetToken(&sIn,&sToken);
    switch( sToken.eType ){
      case TT_Id:
        IdentTableInsert(pTable,sToken.zText,sToken.nText);
        break;

      case TT_EOF:
        go = 0;
        break;

      default:
        break;
    }
  }
}

/*
** This routine gets the next token.  Everything contained within
** {...} is collapsed into a single TT_Braces token.  Whitespace is
** omitted.
**
** If pTable is not NULL, then insert every identifier seen into the
** IdentTable.  This includes any identifiers seen inside of {...}.
**
** The number of errors encountered is returned.  An error is an
** unterminated token.
*/
static int GetBigToken(InStream *pIn, Token *pToken, IdentTable *pTable){
  const char *zStart;
  int iStart;
  int nBrace;
  int c;
  int nLine;
  int nErr;

  nErr = GetNonspaceToken(pIn,pToken);
  switch( pToken->eType ){
    case TT_Id:
      if( pTable!=0 ){
        IdentTableInsert(pTable,pToken->zText,pToken->nText);
      }
      return nErr;

    case TT_Preprocessor:
      if( pTable!=0 ){
        FindIdentifiersInMacro(pToken,pTable);
      }
      return nErr;

    case TT_Other:
      if( pToken->zText[0]=='{' ) break;
      return nErr;

    default:
      return nErr;
  }

  iStart = pIn->i;
  zStart = pToken->zText;
  nLine = pToken->nLine;
  nBrace = 1;
  while( nBrace ){
    nErr += GetNonspaceToken(pIn,pToken);
    /* printf("%04d: nBrace=%d [%.*s]\n",pToken->nLine,nBrace,
       pToken->nText,pToken->zText); */
    switch( pToken->eType ){
      case TT_EOF:
        fprintf(stderr,"%s:%d: Unterminated \"{\"\n",
           zFilename, nLine);
        nErr++;
        pToken->eType = TT_Error;
        return nErr;

      case TT_Id:
        if( pTable ){
          IdentTableInsert(pTable,pToken->zText,pToken->nText);
        }
        break;

      case TT_Preprocessor:
        if( pTable!=0 ){
          FindIdentifiersInMacro(pToken,pTable);
        }
        break;

      case TT_Other:
        if( (c = pToken->zText[0])=='{' ){
          nBrace++;
        }else if( c=='}' ){
          nBrace--;
        }
        break;

      default:
        break;
    }
  }
  pToken->eType = TT_Braces;
  pToken->nText = 1 + pIn->i - iStart;
  pToken->zText = zStart;
  pToken->nLine = nLine;
  return nErr;
}

/*
** This routine frees up a list of Tokens.  The pComment tokens are
** not cleared by this.  So we leak a little memory when using the -doc
** option.  So what.
*/
static void FreeTokenList(Token *pList){
  Token *pNext;
  while( pList ){
    pNext = pList->pNext;
    SafeFree(pList);
    pList = pNext;
  }
}

/*
** Tokenize an entire file.  Return a pointer to the list of tokens.
**
** Space for each token is obtained from a separate malloc() call.  The
** calling function is responsible for freeing this space.
**
** If pTable is not NULL, then fill the table with all identifiers seen in
** the input file.
*/
static Token *TokenizeFile(const char *zFile, IdentTable *pTable){
  InStream sIn;
  Token *pFirst = 0, *pLast = 0, *pNew;
  int nErr = 0;

  sIn.z = zFile;
  sIn.i = 0;
  sIn.nLine = 1;
  blockComment = 0;

  while( sIn.z[sIn.i]!=0 ){
    pNew = SafeMalloc( sizeof(Token) );
    nErr += GetBigToken(&sIn,pNew,pTable);
    debug3(TOKENIZER, "Token on line %d: [%.*s]\n",
       pNew->nLine, pNew->nText<50 ? pNew->nText : 50, pNew->zText);
    if( pFirst==0 ){
      pFirst = pLast = pNew;
      pNew->pPrev = 0;
    }else{
      pLast->pNext = pNew;
      pNew->pPrev = pLast;
      pLast = pNew;
    }
    if( pNew->eType==TT_EOF ) break;
  }
  if( pLast ) pLast->pNext = 0;
  blockComment = 0;
  if( nErr ){
    FreeTokenList(pFirst);
    pFirst = 0;
  }

  return pFirst;
}

#if TEST==1
/*
** Use the following routine to test or debug the tokenizer.
*/
void main(int argc, char **argv){
  char *zFile;
  Token *pList, *p;
  IdentTable sTable;

  if( argc!=2 ){
    fprintf(stderr,"Usage: %s filename\n",*argv);
    exit(1);
  }
  memset(&sTable,0,sizeof(sTable));
  zFile = ReadFile(argv[1]);
  if( zFile==0 ){
    fprintf(stderr,"Can't read file \"%s\"\n",argv[1]);
    exit(1);
  }
  pList = TokenizeFile(zFile,&sTable);
  for(p=pList; p; p=p->pNext){
    int j;
    switch( p->eType ){
      case TT_Space:
        printf("%4d: Space\n",p->nLine);
        break;
      case TT_Id:
        printf("%4d: Id           %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Preprocessor:
        printf("%4d: Preprocessor %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Comment:
        printf("%4d: Comment\n",p->nLine);
        break;
      case TT_BlockComment:
        printf("%4d: Block Comment\n",p->nLine);
        break;
      case TT_Number:
        printf("%4d: Number       %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_String:
        printf("%4d: String       %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Other:
        printf("%4d: Other        %.*s\n",p->nLine,p->nText,p->zText);
        break;
      case TT_Braces:
        for(j=0; j<p->nText && j<30 && p->zText[j]!='\n'; j++){}
        printf("%4d: Braces       %.*s...}\n",p->nLine,j,p->zText);
        break;
      case TT_EOF:
        printf("%4d: End of file\n",p->nLine);
        break;
      default:
        printf("%4d: type %d\n",p->nLine,p->eType);
        break;
    }
  }
  FreeTokenList(pList);
  SafeFree(zFile);
  IdentTablePrint(&sTable,stdout);
}
#endif

#ifdef DEBUG
/*
** For debugging purposes, write out a list of tokens.
*/
static void PrintTokens(Token *pFirst, Token *pLast){
  int needSpace = 0;
  int c;

  pLast = pLast->pNext;
  while( pFirst!=pLast ){
    switch( pFirst->eType ){
      case TT_Preprocessor:
        printf("\n%.*s\n",pFirst->nText,pFirst->zText);
        needSpace = 0;
        break;

      case TT_Id:
      case TT_Number:
        printf("%s%.*s", needSpace ? " " : "", pFirst->nText, pFirst->zText);
        needSpace = 1;
        break;

      default:
        c = pFirst->zText[0];
        printf("%s%.*s",
          (needSpace && (c=='*' || c=='{')) ? " " : "",
          pFirst->nText, pFirst->zText);
        needSpace = pFirst->zText[0]==',';
        break;
    }
    pFirst = pFirst->pNext;
  }
}
#endif

/*
** Convert a sequence of tokens into a string and return a pointer
** to that string.  Space to hold the string is obtained from malloc()
** and must be freed by the calling function.
**
** Certain keywords (EXPORT, PRIVATE, PUBLIC, PROTECTED) are always
** skipped.
**
** If pSkip!=0 then skip over nSkip tokens beginning with pSkip.
**
** If zTerm!=0 then append the text to the end.
*/
static char *TokensToString(
  Token *pFirst,    /* First token in the string */
  Token *pLast,     /* Last token in the string */
  char *zTerm,      /* Terminate the string with this text if not NULL */
  Token *pSkip,     /* Skip this token if not NULL */
  int nSkip         /* Skip a total of this many tokens */
){
  char *zReturn;
  String str;
  int needSpace = 0;
  int c;
  int iSkip = 0;
  int skipOne = 0;

  StringInit(&str);
  pLast = pLast->pNext;
  while( pFirst!=pLast ){
    if( pFirst==pSkip ){ iSkip = nSkip; }
    if( iSkip>0 ){
      iSkip--;
      pFirst=pFirst->pNext;
      continue;
    }
    switch( pFirst->eType ){
      case TT_Preprocessor:
        StringAppend(&str,"\n",1);
        StringAppend(&str,pFirst->zText,pFirst->nText);
        StringAppend(&str,"\n",1);
        needSpace = 0;
        break;

      case TT_Id:
        switch( pFirst->zText[0] ){
          case 'E':
            if( pFirst->nText==6 && strncmp(pFirst->zText,"EXPORT",6)==0 ){
              skipOne = 1;
            }
            break;
          case 'P':
            switch( pFirst->nText ){
              case 6:  skipOne = !strncmp(pFirst->zText,"PUBLIC", 6);    break;
              case 7:  skipOne = !strncmp(pFirst->zText,"PRIVATE",7);    break;
              case 9:  skipOne = !strncmp(pFirst->zText,"PROTECTED",9);  break;
              default: break;
            }
            break;
          default:
            break;
        }
        if( skipOne ){
          pFirst = pFirst->pNext;
          skipOne = 0;
          continue;
        }
        /* Fall thru to the next case */
      case TT_Number:
        if( needSpace ){
          StringAppend(&str," ",1);
        }
        StringAppend(&str,pFirst->zText,pFirst->nText);
        needSpace = 1;
        break;

      default:
        c = pFirst->zText[0];
        if( needSpace && (c=='*' || c=='{') ){
          StringAppend(&str," ",1);
        }
        StringAppend(&str,pFirst->zText,pFirst->nText);
        /* needSpace = pFirst->zText[0]==','; */
        needSpace = 0;
        break;
    }
    pFirst = pFirst->pNext;
  }
  if( zTerm && *zTerm ){
    StringAppend(&str,zTerm,strlen(zTerm));
  }
  zReturn = StrDup(StringGet(&str),0);
  StringReset(&str);
  return zReturn;
}

/*
** This routine is called when we see one of the keywords "struct",
** "enum", "union" or "class".  This might be the beginning of a
** type declaration.  This routine will process the declaration and
** remove the declaration tokens from the input stream.
**
** If this is a type declaration that is immediately followed by a
** semicolon (in other words it isn't also a variable definition)
** then set *pReset to ';'.  Otherwise leave *pReset at 0.  The
** *pReset flag causes the parser to skip ahead to the next token
** that begins with the value placed in the *pReset flag, if that
** value is different from 0.
*/
static int ProcessTypeDecl(Token *pList, int flags, int *pReset){
  Token *pName, *pEnd;
  Decl *pDecl;
  String str;
  int need_to_collapse = 1;
  int type = 0;

  *pReset = 0;
  if( pList==0 || pList->pNext==0 || pList->pNext->eType!=TT_Id ){
    return 0;
  }
  pName = pList->pNext;

  /* Catch the case of "struct Foo;" and skip it. */
  if( pName->pNext && pName->pNext->zText[0]==';' ){
    *pReset = ';';
    return 0;
  }

  for(pEnd=pName->pNext; pEnd && pEnd->eType!=TT_Braces; pEnd=pEnd->pNext){
    switch( pEnd->zText[0] ){
      case '(':
      case ')':
      case '*':
      case '[':
      case '=':
      case ';':
        return 0;
    }
  }
  if( pEnd==0 ){
    return 0;
  }

  /*
  ** At this point, we know we have a type declaration that is bounded
  ** by pList and pEnd and has the name pName.
  */

  /*
  ** If the braces are followed immediately by a semicolon, then we are
  ** dealing a type declaration only.  There is not variable definition
  ** following the type declaration.  So reset...
  */
  if( pEnd->pNext==0 || pEnd->pNext->zText[0]==';' ){
    *pReset = ';';
    need_to_collapse = 0;
  }else{
    need_to_collapse = 1;
  }

  if( proto_static==0 && (flags & (PS_Local|PS_Export|PS_Interface))==0 ){
    /* Ignore these objects unless they are explicitly declared as interface,
    ** or unless the "-local" command line option was specified. */
    *pReset = ';';
    return 0;
  }

#ifdef DEBUG
  if( debugMask & PARSER ){
    printf("**** Found type: %.*s %.*s...\n",
      pList->nText, pList->zText, pName->nText, pName->zText);
    PrintTokens(pList,pEnd);
    printf(";\n");
  }
#endif

  /*
  ** Create a new Decl object for this definition.  Actually, if this
  ** is a C++ class definition, then the Decl object might already exist,
  ** so check first for that case before creating a new one.
  */
  switch( *pList->zText ){
    case 'c':  type = TY_Class;        break;
    case 's':  type = TY_Structure;    break;
    case 'e':  type = TY_Enumeration;  break;
    case 'u':  type = TY_Union;        break;
    default:   /* Can't Happen */      break;
  }
  if( type!=TY_Class ){
    pDecl = 0;
  }else{
    pDecl = FindDecl(pName->zText, pName->nText);
    if( pDecl && (pDecl->flags & type)!=type ) pDecl = 0;
  }
  if( pDecl==0 ){
    pDecl = CreateDecl(pName->zText,pName->nText);
  }
  if( (flags & PS_Static) || !(flags & (PS_Interface|PS_Export)) ){
    DeclSetProperty(pDecl,DP_Local);
  }
  DeclSetProperty(pDecl,type);

  /* The object has a full declaration only if it is contained within
  ** "#if INTERFACE...#endif" or "#if EXPORT_INTERFACE...#endif" or
  ** "#if LOCAL_INTERFACE...#endif".  Otherwise, we only give it a
  ** forward declaration.
  */
  if( flags & (PS_Local | PS_Export | PS_Interface)  ){
    pDecl->zDecl = TokensToString(pList,pEnd,";\n",0,0);
  }else{
    pDecl->zDecl = 0;
  }
  pDecl->pComment = pList->pComment;
  StringInit(&str);
  StringAppend(&str,"typedef ",0);
  StringAppend(&str,pList->zText,pList->nText);
  StringAppend(&str," ",0);
  StringAppend(&str,pName->zText,pName->nText);
  StringAppend(&str," ",0);
  StringAppend(&str,pName->zText,pName->nText);
  StringAppend(&str,";\n",2);
  pDecl->zFwd = StrDup(StringGet(&str),0);
  StringReset(&str);
  StringInit(&str);
  StringAppend(&str,pList->zText,pList->nText);
  StringAppend(&str," ",0);
  StringAppend(&str,pName->zText,pName->nText);
  StringAppend(&str,";\n",2);
  pDecl->zFwdCpp = StrDup(StringGet(&str),0);
  StringReset(&str);
  if( flags & PS_Export ){
    DeclSetProperty(pDecl,DP_Export);
  }else if( flags & PS_Local ){
    DeclSetProperty(pDecl,DP_Local);
  }

  /* Here's something weird.  ANSI-C doesn't allow a forward declaration
  ** of an enumeration.  So we have to build the typedef into the
  ** definition.
  */
  if( pDecl->zDecl && DeclHasProperty(pDecl, TY_Enumeration) ){
    StringInit(&str);
    StringAppend(&str,pDecl->zDecl,0);
    StringAppend(&str,pDecl->zFwd,0);
    SafeFree(pDecl->zDecl);
    SafeFree(pDecl->zFwd);
    pDecl->zFwd = 0;
    pDecl->zDecl = StrDup(StringGet(&str),0);
    StringReset(&str);
  }

  if( pName->pNext->zText[0]==':' ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }
  if( pName->nText==5 && strncmp(pName->zText,"class",5)==0 ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }

  /*
  ** Remove all but pList and pName from the input stream.
  */
  if( need_to_collapse ){
    while( pEnd!=pName ){
      Token *pPrev = pEnd->pPrev;
      pPrev->pNext = pEnd->pNext;
      pEnd->pNext->pPrev = pPrev;
      SafeFree(pEnd);
      pEnd = pPrev;
    }
  }
  return 0;
}

/*
** Given a list of tokens that declare something (a function, procedure,
** variable or typedef) find the token which contains the name of the
** thing being declared.
**
** Algorithm:
**
**   The name is:
**
**     1.  The first identifier that is followed by a "[", or
**
**     2.  The first identifier that is followed by a "(" where the
**         "(" is followed by another identifier, or
**
**     3.  The first identifier followed by "::", or
**
**     4.  If none of the above, then the last identifier.
**
**   In all of the above, certain reserved words (like "char") are
**   not considered identifiers.
*/
static Token *FindDeclName(Token *pFirst, Token *pLast){
  Token *pName = 0;
  Token *p;
  int c;

  if( pFirst==0 || pLast==0 ){
    return 0;
  }
  pLast = pLast->pNext;
  for(p=pFirst; p && p!=pLast; p=p->pNext){
    if( p->eType==TT_Id ){
      static IdentTable sReserved;
      static int isInit = 0;
      static const char *aWords[] = { "char", "class",
       "const", "double", "enum", "extern", "EXPORT", "ET_PROC",
       "float", "int", "long",
       "PRIVATE", "PROTECTED", "PUBLIC",
       "register", "static", "struct", "sizeof", "signed", "typedef",
       "union", "volatile", "virtual", "void", };

      if( !isInit ){
        int i;
        for(i=0; i<sizeof(aWords)/sizeof(aWords[0]); i++){
          IdentTableInsert(&sReserved,aWords[i],0);
        }
        isInit = 1;
      }
      if( !IdentTableTest(&sReserved,p->zText,p->nText) ){
        pName = p;
      }
    }else if( p==pFirst ){
      continue;
    }else if( (c=p->zText[0])=='[' && pName ){
      break;
    }else if( c=='(' && p->pNext && p->pNext->eType==TT_Id && pName ){
      break;
    }else if( c==':' && p->zText[1]==':' && pName ){
      break;
    }
  }
  return pName;
}

/*
** This routine is called when we see a method for a class that begins
** with the PUBLIC, PRIVATE, or PROTECTED keywords.  Such methods are
** added to their class definitions.
*/
static int ProcessMethodDef(Token *pFirst, Token *pLast, int flags){
  Token *pClass;
  char *zDecl;
  Decl *pDecl;
  String str;
  int type;

  pLast = pLast->pPrev;
  while( pFirst->zText[0]=='P' ){
    int rc = 1;
    switch( pFirst->nText ){
      case 6:  rc = strncmp(pFirst->zText,"PUBLIC",6); break;
      case 7:  rc = strncmp(pFirst->zText,"PRIVATE",7); break;
      case 9:  rc = strncmp(pFirst->zText,"PROTECTED",9); break;
      default:  break;
    }
    if( rc ) break;
    pFirst = pFirst->pNext;
  }
  pClass = FindDeclName(pFirst,pLast);
  if( pClass==0 ){
    fprintf(stderr,"%s:%d: Unable to find the class name for this method\n",
       zFilename, pFirst->nLine);
    return 1;
  }
  pDecl = FindDecl(pClass->zText, pClass->nText);
  if( pDecl==0 || (pDecl->flags & TY_Class)!=TY_Class ){
    pDecl = CreateDecl(pClass->zText, pClass->nText);
    DeclSetProperty(pDecl, TY_Class);
  }
  StringInit(&str);
  if( pDecl->zExtra ){
    StringAppend(&str, pDecl->zExtra, 0);
    SafeFree(pDecl->zExtra);
    pDecl->zExtra = 0;
  }
  type = flags & PS_PPP;
  if( pDecl->extraType!=type ){
    if( type & PS_Public ){
      StringAppend(&str, "public:\n", 0);
      pDecl->extraType = PS_Public;
    }else if( type & PS_Protected ){
      StringAppend(&str, "protected:\n", 0);
      pDecl->extraType = PS_Protected;
    }else if( type & PS_Private ){
      StringAppend(&str, "private:\n", 0);
      pDecl->extraType = PS_Private;
    }
  }
  StringAppend(&str, "  ", 0);
  zDecl = TokensToString(pFirst, pLast, ";\n", pClass, 2);
  if(strncmp(zDecl, pClass->zText, pClass->nText)==0){
    /* If member initializer list is found after a constructor,
    ** skip that part. */
    char * colon = strchr(zDecl, ':');
    if(colon!=0 && colon[1]!=0){
      *colon++ = ';';
      *colon++ = '\n';
      *colon = 0;
    }
  }
  StringAppend(&str, zDecl, 0);
  SafeFree(zDecl);
  pDecl->zExtra = StrDup(StringGet(&str), 0);
  StringReset(&str);
  return 0;
}

/*
** This routine is called when we see a function or procedure definition.
** We make an entry in the declaration table that is a prototype for this
** function or procedure.
*/
static int ProcessProcedureDef(Token *pFirst, Token *pLast, int flags){
  Token *pName;
  Decl *pDecl;
  Token *pCode;

  if( pFirst==0 || pLast==0 ){
    return 0;
  }
  if( flags & PS_Method ){
    if( flags & PS_PPP ){
      return ProcessMethodDef(pFirst, pLast, flags);
    }else{
      return 0;
    }
  }
  if( (flags & PS_Static)!=0 && !proto_static ){
    return 0;
  }
  pCode = pLast;
  while( pLast && pLast!=pFirst && pLast->zText[0]!=')' ){
    pLast = pLast->pPrev;
  }
  if( pLast==0 || pLast==pFirst || pFirst->pNext==pLast ){
    fprintf(stderr,"%s:%d: Unrecognized syntax.\n",
      zFilename, pFirst->nLine);
    return 1;
  }
  if( flags & (PS_Interface|PS_Export|PS_Local) ){
    fprintf(stderr,"%s:%d: Missing \"inline\" on function or procedure.\n",
      zFilename, pFirst->nLine);
    return 1;
  }
  pName = FindDeclName(pFirst,pLast);
  if( pName==0 ){
    fprintf(stderr,"%s:%d: Malformed function or procedure definition.\n",
      zFilename, pFirst->nLine);
    return 1;
  }
  if( strncmp(pName->zText,"main",pName->nText)==0 ){
    /* skip main() decl. */
    return 0;
  }
  /*
  ** At this point we've isolated a procedure declaration between pFirst
  ** and pLast with the name pName.
  */
#ifdef DEBUG
  if( debugMask & PARSER ){
    printf("**** Found routine: %.*s on line %d...\n", pName->nText,
       pName->zText, pFirst->nLine);
    PrintTokens(pFirst,pLast);
    printf(";\n");
  }
#endif
  pDecl = CreateDecl(pName->zText,pName->nText);
  pDecl->pComment = pFirst->pComment;
  if( pCode && pCode->eType==TT_Braces ){
    pDecl->tokenCode = *pCode;
  }
  DeclSetProperty(pDecl,TY_Subroutine);
  pDecl->zDecl = TokensToString(pFirst,pLast,";\n",0,0);
  if( (flags & (PS_Static|PS_Local2))!=0 ){
    DeclSetProperty(pDecl,DP_Local);
  }else if( (flags & (PS_Export2))!=0 ){
    DeclSetProperty(pDecl,DP_Export);
  }

  if( flags & DP_Cplusplus ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }else{
    DeclSetProperty(pDecl,DP_ExternCReqd);
  }

  return 0;
}

/*
** This routine is called whenever we see the "inline" keyword.  We
** need to seek-out the inline function or procedure and make a
** declaration out of the entire definition.
*/
static int ProcessInlineProc(Token *pFirst, int flags, int *pReset){
  Token *pName;
  Token *pEnd;
  Decl *pDecl;

  for(pEnd=pFirst; pEnd; pEnd = pEnd->pNext){
    if( pEnd->zText[0]=='{' || pEnd->zText[0]==';' ){
      *pReset = pEnd->zText[0];
      break;
    }
  }
  if( pEnd==0 ){
    *pReset = ';';
    fprintf(stderr,"%s:%d: incomplete inline procedure definition\n",
      zFilename, pFirst->nLine);
    return 1;
  }
  pName = FindDeclName(pFirst,pEnd);
  if( pName==0 ){
    fprintf(stderr,"%s:%d: malformed inline procedure definition\n",
      zFilename, pFirst->nLine);
    return 1;
  }

#ifdef DEBUG
  if( debugMask & PARSER ){
    printf("**** Found inline routine: %.*s on line %d...\n",
       pName->nText, pName->zText, pFirst->nLine);
    PrintTokens(pFirst,pEnd);
    printf("\n");
  }
#endif
  pDecl = CreateDecl(pName->zText,pName->nText);
  pDecl->pComment = pFirst->pComment;
  DeclSetProperty(pDecl,TY_Subroutine);
  pDecl->zDecl = TokensToString(pFirst,pEnd,";\n",0,0);
  if( (flags & (PS_Static|PS_Local|PS_Local2)) ){
    DeclSetProperty(pDecl,DP_Local);
  }else if( flags & (PS_Export|PS_Export2) ){
    DeclSetProperty(pDecl,DP_Export);
  }

  if( flags & DP_Cplusplus ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }else{
    DeclSetProperty(pDecl,DP_ExternCReqd);
  }

  return 0;
}

/*
** Determine if the tokens between pFirst and pEnd form a variable
** definition or a function prototype.  Return TRUE if we are dealing
** with a variable defintion and FALSE for a prototype.
**
** pEnd is the token that ends the object.  It can be either a ';' or
** a '='.  If it is '=', then assume we have a variable definition.
**
** If pEnd is ';', then the determination is more difficult.  We have
** to search for an occurrence of an ID followed immediately by '('.
** If found, we have a prototype.  Otherwise we are dealing with a
** variable definition.
*/
static int isVariableDef(Token *pFirst, Token *pEnd){
  if( pEnd && pEnd->zText[0]=='=' &&
    (pEnd->pPrev->nText!=8 || strncmp(pEnd->pPrev->zText,"operator",8)!=0)
  ){
    return 1;
  }
  while( pFirst && pFirst!=pEnd && pFirst->pNext && pFirst->pNext!=pEnd ){
    if( pFirst->eType==TT_Id && pFirst->pNext->zText[0]=='(' ){
      return 0;
    }
    pFirst = pFirst->pNext;
  }
  return 1;
}

/*
** Return TRUE if pFirst is the first token of a static assert.
*/
static int isStaticAssert(Token *pFirst){
  if( (pFirst->nText==13 && strncmp(pFirst->zText, "static_assert", 13)==0)
   || (pFirst->nText==14 && strncmp(pFirst->zText, "_Static_assert", 14)==0)
  ){
    return 1;
  }else{
    return 0;
  }
}

/*
** This routine is called whenever we encounter a ";" or "=".  The stuff
** between pFirst and pLast constitutes either a typedef or a global
** variable definition.  Do the right thing.
*/
static int ProcessDecl(Token *pFirst, Token *pEnd, int flags){
  Token *pName;
  Decl *pDecl;
  int isLocal = 0;
  int isVar;
  int nErr = 0;

  if( pFirst==0 || pEnd==0 ){
    return 0;
  }
  if( flags & PS_Typedef ){
    if( (flags & (PS_Export2|PS_Local2))!=0 ){
      fprintf(stderr,"%s:%d: \"EXPORT\" or \"LOCAL\" ignored before typedef.\n",
        zFilename, pFirst->nLine);
      nErr++;
    }
    if( (flags & (PS_Interface|PS_Export|PS_Local|DP_Cplusplus))==0 ){
      /* It is illegal to duplicate a typedef in C (but OK in C++).
      ** So don't record typedefs that aren't within a C++ file or
      ** within #if INTERFACE..#endif */
      return nErr;
    }
    if( (flags & (PS_Interface|PS_Export|PS_Local))==0 && proto_static==0 ){
      /* Ignore typedefs that are not with "#if INTERFACE..#endif" unless
      ** the "-local" command line option is used. */
      return nErr;
    }
    if( (flags & (PS_Interface|PS_Export))==0 ){
      /* typedefs are always local, unless within #if INTERFACE..#endif */
      isLocal = 1;
    }
  }else if( flags & (PS_Static|PS_Local2) ){
    if( proto_static==0 && (flags & PS_Local2)==0 ){
      /* Don't record static variables unless the "-local" command line
      ** option was specified or the "LOCAL" keyword is used. */
      return nErr;
    }
    while( pFirst!=0 && pFirst->pNext!=pEnd &&
       ((pFirst->nText==6 && strncmp(pFirst->zText,"static",6)==0)
        || (pFirst->nText==5 && strncmp(pFirst->zText,"LOCAL",6)==0))
    ){
      /* Lose the initial "static" or local from local variables.
      ** We'll prepend "extern" later. */
      pFirst = pFirst->pNext;
      isLocal = 1;
    }
    if( pFirst==0 || !isLocal ){
      return nErr;
    }
  }else if( flags & PS_Method ){
    /* Methods are declared by their class.  Don't declare separately. */
    return nErr;
  }else if( isStaticAssert(pFirst) ){
    return 0;
  }
  isVar =  (flags & (PS_Typedef|PS_Method))==0 && isVariableDef(pFirst,pEnd);
  if( isVar && (flags & (PS_Interface|PS_Export|PS_Local))!=0
  && (flags & PS_Extern)==0 ){
    fprintf(stderr,"%s:%d: Can't define a variable in this context\n",
      zFilename, pFirst->nLine);
    nErr++;
  }
  pName = FindDeclName(pFirst,pEnd->pPrev);
  if( pName==0 ){
    if( pFirst->nText==4 && strncmp(pFirst->zText,"enum",4)==0 ){
      /* Ignore completely anonymous enums.  See documentation section 3.8.1. */
      return nErr;
    }else{
      fprintf(stderr,"%s:%d: Can't find a name for the object declared here.\n",
        zFilename, pFirst->nLine);
      return nErr+1;
    }
  }

#ifdef DEBUG
  if( debugMask & PARSER ){
    if( flags & PS_Typedef ){
      printf("**** Found typedef %.*s at line %d...\n",
        pName->nText, pName->zText, pName->nLine);
    }else if( isVar ){
      printf("**** Found variable %.*s at line %d...\n",
        pName->nText, pName->zText, pName->nLine);
    }else{
      printf("**** Found prototype %.*s at line %d...\n",
        pName->nText, pName->zText, pName->nLine);
    }
    PrintTokens(pFirst,pEnd->pPrev);
    printf(";\n");
  }
#endif

  pDecl = CreateDecl(pName->zText,pName->nText);
  if( (flags & PS_Typedef) ){
    DeclSetProperty(pDecl, TY_Typedef);
  }else if( isVar ){
    DeclSetProperty(pDecl,DP_ExternReqd | TY_Variable);
    if( !(flags & DP_Cplusplus) ){
      DeclSetProperty(pDecl,DP_ExternCReqd);
    }
  }else{
    DeclSetProperty(pDecl, TY_Subroutine);
    if( !(flags & DP_Cplusplus) ){
      DeclSetProperty(pDecl,DP_ExternCReqd);
    }
  }
  pDecl->pComment = pFirst->pComment;
  pDecl->zDecl = TokensToString(pFirst,pEnd->pPrev,";\n",0,0);
  if( isLocal || (flags & (PS_Local|PS_Local2))!=0 ){
    DeclSetProperty(pDecl,DP_Local);
  }else if( flags & (PS_Export|PS_Export2) ){
    DeclSetProperty(pDecl,DP_Export);
  }
  if( flags & DP_Cplusplus ){
    DeclSetProperty(pDecl,DP_Cplusplus);
  }
  return nErr;
}

/*
** Push an if condition onto the if stack
*/
static void PushIfMacro(
  const char *zPrefix,      /* A prefix, like "define" or "!" */
  const char *zText,        /* The condition */
  int nText,                /* Number of characters in zText */
  int nLine,                /* Line number where this macro occurs */
  int flags                 /* Either 0, PS_Interface, PS_Export or PS_Local */
){
  Ifmacro *pIf;
  int nByte;

  nByte = sizeof(Ifmacro);
  if( zText ){
    if( zPrefix ){
      nByte += strlen(zPrefix) + 2;
    }
    nByte += nText + 1;
  }
  pIf = SafeMalloc( nByte );
  if( zText ){
    pIf->zCondition = (char*)&pIf[1];
    if( zPrefix ){
      int nPrefix = (int)strlen(zPrefix);
      memcpy(pIf->zCondition, zPrefix, nPrefix);
      pIf->zCondition[nPrefix] = '(';
      memcpy(&pIf->zCondition[nPrefix+1], zText, nText);
      memcpy(&pIf->zCondition[nPrefix+nText+1], ")", 2);
    }else{
      memcpy(pIf->zCondition, zText, nText);
      pIf->zCondition[nText] = 0;
    }
  }else{
    pIf->zCondition = 0;
  }
  pIf->nLine = nLine;
  pIf->flags = flags;
  pIf->pNext = ifStack;
  ifStack = pIf;
}

/*
** This routine is called to handle all preprocessor directives.
**
** This routine will recompute the value of *pPresetFlags to be the
** logical or of all flags on all nested #ifs.  The #ifs that set flags
** are as follows:
**
**        conditional                   flag set
**        ------------------------      --------------------
**        #if INTERFACE                 PS_Interface
**        #if EXPORT_INTERFACE          PS_Export
**        #if LOCAL_INTERFACE           PS_Local
**
** For example, if after processing the preprocessor token given
** by pToken there is an "#if INTERFACE" on the preprocessor
** stack, then *pPresetFlags will be set to PS_Interface.
*/
static int ParsePreprocessor(Token *pToken, int flags, int *pPresetFlags){
  const char *zCmd;
  int nCmd;
  const char *zArg;
  int nArg;
  int nErr = 0;
  Ifmacro *pIf;

  zCmd = &pToken->zText[1];
  while( isspace(*zCmd) && *zCmd!='\n' ){
    zCmd++;
  }
  if( !isalpha(*zCmd) ){
    return 0;
  }
  nCmd = 1;
  while( isalpha(zCmd[nCmd]) ){
    nCmd++;
  }

  if( nCmd==5 && strncmp(zCmd,"endif",5)==0 ){
    /*
    ** Pop the if stack
    */
    pIf = ifStack;
    if( pIf==0 ){
      fprintf(stderr,"%s:%d: extra '#endif'.\n",zFilename,pToken->nLine);
      return 1;
    }
    ifStack = pIf->pNext;
    SafeFree(pIf);
  }else if( nCmd==6 && strncmp(zCmd,"define",6)==0 ){
    /*
    ** Record a #define if we are in PS_Interface or PS_Export
    */
    Decl *pDecl;
    if( !(flags & (PS_Local|PS_Interface|PS_Export)) ){ return 0; }
    zArg = &zCmd[6];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    for(nArg=0; ISALNUM(zArg[nArg]); nArg++){}
    if( nArg==0 ){ return 0; }
    pDecl = CreateDecl(zArg,nArg);
    pDecl->pComment = pToken->pComment;
    DeclSetProperty(pDecl,TY_Macro);
    pDecl->zDecl = SafeMalloc( pToken->nText + 2 );
    memcpy(pDecl->zDecl, pToken->zText, pToken->nText);
    memcpy(&pDecl->zDecl[pToken->nText], "\n", 2);
    if( flags & PS_Export ){
      DeclSetProperty(pDecl,DP_Export);
    }else if( flags & PS_Local ){
      DeclSetProperty(pDecl,DP_Local);
    }
  }else if( nCmd==7 && strncmp(zCmd,"include",7)==0 ){
    /*
    ** Record an #include if we are in PS_Interface or PS_Export
    */
    Include *pInclude;
    char *zIf;

    if( !(flags & (PS_Interface|PS_Export)) ){ return 0; }
    zArg = &zCmd[7];
    while( *zArg && isspace(*zArg) ){ zArg++; }
    for(nArg=0; !isspace(zArg[nArg]); nArg++){}
    if( (zArg[0]=='"' && zArg[nArg-1]!='"')
      ||(zArg[0]=='<' && zArg[nArg-1]!='>')
    ){
      fprintf(stderr,"%s:%d: malformed #include statement.\n",
        zFilename,pToken->nLine);
      return 1;
    }
    zIf = GetIfString();
    if( zIf ){
      pInclude = SafeMalloc( sizeof(Include) + nArg*2 + strlen(zIf) + 10 );
      pInclude->zFile = (char*)&pInclude[1];
      pInclude->zLabel = &pInclude->zFile[nArg+1];
      memcpy(pInclude->zFile, zArg, nArg);
      pInclude->zFile[nArg] = 0;
      memcpy(pInclude->zLabel, zArg, nArg);
      pInclude->zLabel[nArg] = ':';
      memcpy(&pInclude->zLabel[nArg+1], zIf, strlen(zIf)+1);
      pInclude->zIf = &pInclude->zLabel[nArg+1];
      SafeFree(zIf);
    }else{
      pInclude = SafeMalloc( sizeof(Include) + nArg + 1 );
      pInclude->zFile = (char*)&pInclude[1];
      memcpy(pInclude->zFile, zArg, nArg);
      pInclude->zFile[nArg] = 0;
      pInclude->zIf = 0;
      pInclude->zLabel = pInclude->zFile;
    }
    pInclude->pNext = includeList;
    includeList = pInclude;
  }else if( nCmd==2 && strncmp(zCmd,"if",2)==0 ){
    /*
    ** Push an #if.  Watch for the special cases of INTERFACE
    ** and EXPORT_INTERFACE and LOCAL_INTERFACE
    */
    zArg = &zCmd[2];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    nArg = pToken->nText + (int)(pToken->zText - zArg);
    if (pToken->zText[pToken->nText-1] == '\r') { nArg--; }
    if( nArg==9 && strncmp(zArg,"INTERFACE",9)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Interface);
    }else if( nArg==16 && strncmp(zArg,"EXPORT_INTERFACE",16)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Export);
    }else if( nArg==15 && strncmp(zArg,"LOCAL_INTERFACE",15)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Local);
    }else if( nArg==15 &&
              strncmp(zArg,"MAKEHEADERS_STOPLOCAL_INTERFACE",15)==0 ){
      PushIfMacro(0,0,0,pToken->nLine,PS_Local);
    }else{
      PushIfMacro(0,zArg,nArg,pToken->nLine,0);
    }
  }else if( nCmd==5 && strncmp(zCmd,"ifdef",5)==0 ){
    /*
    ** Push an #ifdef.
    */
    zArg = &zCmd[5];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    nArg = pToken->nText + (int)(pToken->zText - zArg);
    if (pToken->zText[pToken->nText-1] == '\r') { nArg--; }
    PushIfMacro("defined",zArg,nArg,pToken->nLine,0);
  }else if( nCmd==6 && strncmp(zCmd,"ifndef",6)==0 ){
    /*
    ** Push an #ifndef.
    */
    zArg = &zCmd[6];
    while( *zArg && isspace(*zArg) && *zArg!='\n' ){
      zArg++;
    }
    if( *zArg==0 || *zArg=='\n' ){ return 0; }
    nArg = pToken->nText + (int)(pToken->zText - zArg);
    if (pToken->zText[pToken->nText-1] == '\r') { nArg--; }
    PushIfMacro("!defined",zArg,nArg,pToken->nLine,0);
  }else if( nCmd==4 && strncmp(zCmd,"else",4)==0 ){
    /*
    ** Invert the #if on the top of the stack
    */
    if( ifStack==0 ){
      fprintf(stderr,"%s:%d: '#else' without an '#if'\n",zFilename,
         pToken->nLine);
      return 1;
    }
    pIf = ifStack;
    if( pIf->zCondition ){
      ifStack = ifStack->pNext;
      PushIfMacro("!",pIf->zCondition,strlen(pIf->zCondition),pIf->nLine,0);
      SafeFree(pIf);
    }else{
      pIf->flags = 0;
    }
  }else{
    /*
    ** This directive can be safely ignored
    */
    return 0;
  }

  /*
  ** Recompute the preset flags
  */
  *pPresetFlags = 0;
  for(pIf = ifStack; pIf; pIf=pIf->pNext){
    *pPresetFlags |= pIf->flags;
  }

  return nErr;
}

/*
** Parse an entire file.  Return the number of errors.
**
** pList is a list of tokens in the file.  Whitespace tokens have been
** eliminated, and text with {...} has been collapsed into a
** single TT_Brace token.
**
** initFlags are a set of parse flags that should always be set for this
** file.  For .c files this is normally 0.  For .h files it is PS_Interface.
*/
static int ParseFile(Token *pList, int initFlags){
  int nErr = 0;
  Token *pStart = 0;
  int flags = initFlags;
  int presetFlags = initFlags;
  int resetFlag = 0;

  includeList = 0;
  while( pList ){
    switch( pList->eType ){
    case TT_EOF:
      goto end_of_loop;

    case TT_Preprocessor:
      nErr += ParsePreprocessor(pList,flags,&presetFlags);
      pStart = 0;
      presetFlags |= initFlags;
      flags = presetFlags;
      break;

    case TT_Other:
      switch( pList->zText[0] ){
      case ';':
        nErr += ProcessDecl(pStart,pList,flags);
        pStart = 0;
        flags = presetFlags;
        break;

      case '=':
        if( pList->pPrev->nText==8
            && strncmp(pList->pPrev->zText,"operator",8)==0 ){
          break;
        }
        nErr += ProcessDecl(pStart,pList,flags);
        pStart = 0;
        while( pList && pList->zText[0]!=';' ){
          pList = pList->pNext;
        }
        if( pList==0 ) goto end_of_loop;
        flags = presetFlags;
        break;

      case ':':
        if( pList->zText[1]==':' ){
          flags |= PS_Method;
        }
        break;

      default:
        break;
      }
      break;

    case TT_Braces:
      nErr += ProcessProcedureDef(pStart,pList,flags);
      pStart = 0;
      flags = presetFlags;
      break;

    case TT_Id:
       if( pStart==0 ){
          pStart = pList;
          flags = presetFlags;
       }
       resetFlag = 0;
       switch( pList->zText[0] ){
       case 'c':
         if( pList->nText==5 && strncmp(pList->zText,"class",5)==0 ){
           nErr += ProcessTypeDecl(pList,flags,&resetFlag);
         }
         break;

       case 'E':
         if( pList->nText==6 && strncmp(pList->zText,"EXPORT",6)==0 ){
           flags |= PS_Export2;
           /* pStart = 0; */
         }
         break;

       case 'e':
         if( pList->nText==4 && strncmp(pList->zText,"enum",4)==0 ){
           if( pList->pNext && pList->pNext->eType==TT_Braces ){
             pList = pList->pNext;
           }else{
             nErr += ProcessTypeDecl(pList,flags,&resetFlag);
           }
         }else if( pList->nText==6 && strncmp(pList->zText,"extern",6)==0 ){
           pList = pList->pNext;
           if( pList && pList->nText==3 && strncmp(pList->zText,"\"C\"",3)==0 ){
             pList = pList->pNext;
             flags &= ~DP_Cplusplus;
           }else{
             flags |= PS_Extern;
           }
           pStart = pList;
         }
         break;

       case 'i':
         if( pList->nText==6 && strncmp(pList->zText,"inline",6)==0
          && (flags & PS_Static)==0
         ){
           nErr += ProcessInlineProc(pList,flags,&resetFlag);
         }
         break;

       case 'L':
         if( pList->nText==5 && strncmp(pList->zText,"LOCAL",5)==0 ){
           flags |= PS_Local2;
           pStart = pList;
         }
         break;

       case 'P':
         if( pList->nText==6 && strncmp(pList->zText, "PUBLIC",6)==0 ){
           flags |= PS_Public;
           pStart = pList;
         }else if( pList->nText==7 && strncmp(pList->zText, "PRIVATE",7)==0 ){
           flags |= PS_Private;
           pStart = pList;
         }else if( pList->nText==9 && strncmp(pList->zText,"PROTECTED",9)==0 ){
           flags |= PS_Protected;
           pStart = pList;
         }
         break;

       case 's':
         if( pList->nText==6 && strncmp(pList->zText,"struct",6)==0 ){
           if( pList->pNext && pList->pNext->eType==TT_Braces ){
             pList = pList->pNext;
           }else{
             nErr += ProcessTypeDecl(pList,flags,&resetFlag);
           }
         }else if( pList->nText==6 && strncmp(pList->zText,"static",6)==0 ){
           flags |= PS_Static;
         }
         break;

       case 't':
         if( pList->nText==7 && strncmp(pList->zText,"typedef",7)==0 ){
           flags |= PS_Typedef;
         }
         break;

       case 'u':
         if( pList->nText==5 && strncmp(pList->zText,"union",5)==0 ){
           if( pList->pNext && pList->pNext->eType==TT_Braces ){
             pList = pList->pNext;
           }else{
             nErr += ProcessTypeDecl(pList,flags,&resetFlag);
           }
         }
         break;

       default:
         break;
       }
       if( resetFlag!=0 ){
         while( pList && pList->zText[0]!=resetFlag ){
           pList = pList->pNext;
         }
         if( pList==0 ) goto end_of_loop;
         pStart = 0;
         flags = presetFlags;
       }
       break;

    case TT_String:
    case TT_Number:
       break;

    default:
       pStart = pList;
       flags = presetFlags;
       break;
    }
    pList = pList->pNext;
  }
  end_of_loop:

  /* Verify that all #ifs have a matching "#endif" */
  while( ifStack ){
    Ifmacro *pIf = ifStack;
    ifStack = pIf->pNext;
    fprintf(stderr,"%s:%d: This '#if' has no '#endif'\n",zFilename,
      pIf->nLine);
    SafeFree(pIf);
  }

  return nErr;
}

/*
** If the given Decl object has a non-null zExtra field, then the text
** of that zExtra field needs to be inserted in the middle of the
** zDecl field before the last "}" in the zDecl.  This routine does that.
** If the zExtra is NULL, this routine is a no-op.
**
** zExtra holds extra method declarations for classes.  The declarations
** have to be inserted into the class definition.
*/
static void InsertExtraDecl(Decl *pDecl){
  int i;
  String str;

  if( pDecl==0 || pDecl->zExtra==0 || pDecl->zDecl==0 ) return;
  i = strlen(pDecl->zDecl) - 1;
  while( i>0 && pDecl->zDecl[i]!='}' ){ i--; }
  StringInit(&str);
  StringAppend(&str, pDecl->zDecl, i);
  StringAppend(&str, pDecl->zExtra, 0);
  StringAppend(&str, &pDecl->zDecl[i], 0);
  SafeFree(pDecl->zDecl);
  SafeFree(pDecl->zExtra);
  pDecl->zDecl = StrDup(StringGet(&str), 0);
  StringReset(&str);
  pDecl->zExtra = 0;
}

/*
** Reset the DP_Forward and DP_Declared flags on all Decl structures.
** Set both flags for anything that is tagged as local and isn't
** in the file zFilename so that it won't be printing in other files.
*/
static void ResetDeclFlags(char *zFilename){
  Decl *pDecl;

  for(pDecl = pDeclFirst; pDecl; pDecl = pDecl->pNext){
    DeclClearProperty(pDecl,DP_Forward|DP_Declared);
    if( DeclHasProperty(pDecl,DP_Local) && pDecl->zFile!=zFilename ){
      DeclSetProperty(pDecl,DP_Forward|DP_Declared);
    }
  }
}

/*
** Forward declaration of the ScanText() function.
*/
static void ScanText(const char*, GenState *pState);

/*
** The output in pStr is currently within an #if CONTEXT where context
** is equal to *pzIf.  (*pzIf might be NULL to indicate that we are
** not within any #if at the moment.)  We are getting ready to output
** some text that needs to be within the context of "#if NEW" where
** NEW is zIf.  Make an appropriate change to the context.
*/
static void ChangeIfContext(
  const char *zIf,       /* The desired #if context */
  GenState *pState       /* Current state of the code generator */
){
  if( zIf==0 ){
    if( pState->zIf==0 ) return;
    StringAppend(pState->pStr,"#endif\n",0);
    pState->zIf = 0;
  }else{
    if( pState->zIf ){
      if( strcmp(zIf,pState->zIf)==0 ) return;
      StringAppend(pState->pStr,"#endif\n",0);
      pState->zIf = 0;
    }
    ScanText(zIf, pState);
    if( pState->zIf!=0 ){
      StringAppend(pState->pStr,"#endif\n",0);
    }
    StringAppend(pState->pStr,"#if ",0);
    StringAppend(pState->pStr,zIf,0);
    StringAppend(pState->pStr,"\n",0);
    pState->zIf = zIf;
  }
}

/*
** Add to the string pStr a #include of every file on the list of
** include files pInclude.  The table pTable contains all files that
** have already been #included at least once.  Don't add any
** duplicates.  Update pTable with every new #include that is added.
*/
static void AddIncludes(
  Include *pInclude,       /* Write every #include on this list */
  GenState *pState         /* Current state of the code generator */
){
  if( pInclude ){
    if( pInclude->pNext ){
      AddIncludes(pInclude->pNext,pState);
    }
    if( IdentTableInsert(pState->pTable,pInclude->zLabel,0) ){
      ChangeIfContext(pInclude->zIf,pState);
      StringAppend(pState->pStr,"#include ",0);
      StringAppend(pState->pStr,pInclude->zFile,0);
      StringAppend(pState->pStr,"\n",1);
    }
  }
}

/*
** Add to the string pStr a declaration for the object described
** in pDecl.
**
** If pDecl has already been declared in this file, detect that
** fact and abort early.  Do not duplicate a declaration.
**
** If the needFullDecl flag is false and this object has a forward
** declaration, then supply the forward declaration only.  A later
** call to CompleteForwardDeclarations() will finish the declaration
** for us.  But if needFullDecl is true, we must supply the full
** declaration now.  Some objects do not have a forward declaration.
** For those objects, we must print the full declaration now.
**
** Because it is illegal to duplicate a typedef in C, care is taken
** to insure that typedefs for the same identifier are only issued once.
*/
static void DeclareObject(
  Decl *pDecl,        /* The thing to be declared */
  GenState *pState,   /* Current state of the code generator */
  int needFullDecl    /* Must have the full declaration.  A forward
                       * declaration isn't enough */
){
  Decl *p;               /* The object to be declared */
  int flag;
  int isCpp;             /* True if generating C++ */
  int doneTypedef = 0;   /* True if a typedef has been done for this object */

  /* printf("BEGIN %s of %s\n",needFullDecl?"FULL":"PROTOTYPE",pDecl->zName);*/
  /*
  ** For any object that has a forward declaration, go ahead and do the
  ** forward declaration first.
  */
  isCpp = (pState->flags & DP_Cplusplus) != 0;
  for(p=pDecl; p; p=p->pSameName){
    if( p->zFwd ){
      if( !DeclHasProperty(p,DP_Forward) ){
        DeclSetProperty(p,DP_Forward);
        if( strncmp(p->zFwd,"typedef",7)==0 ){
          if( doneTypedef ) continue;
          doneTypedef = 1;
        }
        ChangeIfContext(p->zIf,pState);
        StringAppend(pState->pStr,isCpp ? p->zFwdCpp : p->zFwd,0);
      }
    }
  }

  /*
  ** Early out if everything is already suitably declared.
  **
  ** This is a very important step because it prevents us from
  ** executing the code the follows in a recursive call to this
  ** function with the same value for pDecl.
  */
  flag = needFullDecl ? DP_Declared|DP_Forward : DP_Forward;
  for(p=pDecl; p; p=p->pSameName){
    if( !DeclHasProperty(p,flag) ) break;
  }
  if( p==0 ){
    return;
  }

  /*
  ** Make sure we have all necessary #includes
  */
  for(p=pDecl; p; p=p->pSameName){
    AddIncludes(p->pInclude,pState);
  }

  /*
  ** Go ahead an mark everything as being declared, to prevent an
  ** infinite loop thru the ScanText() function.  At the same time,
  ** we decide which objects need a full declaration and mark them
  ** with the DP_Flag bit.  We are only able to use DP_Flag in this
  ** way because we know we'll never execute this far into this
  ** function on a recursive call with the same pDecl.  Hence, recursive
  ** calls to this function (through ScanText()) can never change the
  ** value of DP_Flag out from under us.
  */
  for(p=pDecl; p; p=p->pSameName){
    if( !DeclHasProperty(p,DP_Declared)
     && (p->zFwd==0 || needFullDecl)
     && p->zDecl!=0
    ){
      DeclSetProperty(p,DP_Forward|DP_Declared|DP_Flag);
    }else{
      DeclClearProperty(p,DP_Flag);
    }
  }

  /*
  ** Call ScanText() recursively (this routine is called from ScanText())
  ** to include declarations required to come before these declarations.
  */
  for(p=pDecl; p; p=p->pSameName){
    if( DeclHasProperty(p,DP_Flag) ){
      if( p->zDecl[0]=='#' ){
        ScanText(&p->zDecl[1],pState);
      }else{
        InsertExtraDecl(p);
        ScanText(p->zDecl,pState);
      }
    }
  }

  /*
  ** Output the declarations.  Do this in two passes.  First
  ** output everything that isn't a typedef.  Then go back and
  ** get the typedefs by the same name.
  */
  for(p=pDecl; p; p=p->pSameName){
    if( DeclHasProperty(p,DP_Flag) && !DeclHasProperty(p,TY_Typedef) ){
      if( DeclHasAnyProperty(p,TY_Enumeration) ){
        if( doneTypedef ) continue;
        doneTypedef = 1;
      }
      ChangeIfContext(p->zIf,pState);
      if( !isCpp && DeclHasAnyProperty(p,DP_ExternReqd) ){
        StringAppend(pState->pStr,"extern ",0);
      }else if( isCpp && DeclHasProperty(p,DP_Cplusplus|DP_ExternReqd) ){
        StringAppend(pState->pStr,"extern ",0);
      }else if( isCpp && DeclHasAnyProperty(p,DP_ExternCReqd|DP_ExternReqd) ){
        StringAppend(pState->pStr,"extern \"C\" ",0);
      }
      InsertExtraDecl(p);
      StringAppend(pState->pStr,p->zDecl,0);
      if( !isCpp && DeclHasProperty(p,DP_Cplusplus) ){
        fprintf(stderr,
          "%s: C code ought not reference the C++ object \"%s\"\n",
          pState->zFilename, p->zName);
        pState->nErr++;
      }
      DeclClearProperty(p,DP_Flag);
    }
  }
  for(p=pDecl; p && !doneTypedef; p=p->pSameName){
    if( DeclHasProperty(p,DP_Flag) ){
      /* This has to be a typedef */
      doneTypedef = 1;
      ChangeIfContext(p->zIf,pState);
      InsertExtraDecl(p);
      StringAppend(pState->pStr,p->zDecl,0);
    }
  }
}

/*
** This routine scans the input text given, and appends to the
** string in pState->pStr the text of any declarations that must
** occur before the text in zText.
**
** If an identifier in zText is immediately followed by '*', then
** only forward declarations are needed for that identifier.  If the
** identifier name is not followed immediately by '*', we must supply
** a full declaration.
*/
static void ScanText(
  const char *zText,    /* The input text to be scanned */
  GenState *pState      /* Current state of the code generator */
){
  int nextValid = 0;    /* True is sNext contains valid data */
  InStream sIn;         /* The input text */
  Token sToken;         /* The current token being examined */
  Token sNext;          /* The next non-space token */

  /* printf("BEGIN SCAN TEXT on %s\n", zText); */

  sIn.z = zText;
  sIn.i = 0;
  sIn.nLine = 1;
  while( sIn.z[sIn.i]!=0 ){
    if( nextValid ){
      sToken = sNext;
      nextValid = 0;
    }else{
      GetNonspaceToken(&sIn,&sToken);
    }
    if( sToken.eType==TT_Id ){
      int needFullDecl;   /* True if we need to provide the full declaration,
                          ** not just the forward declaration */
      Decl *pDecl;        /* The declaration having the name in sToken */

      /*
      ** See if there is a declaration in the database with the name given
      ** by sToken.
      */
      pDecl = FindDecl(sToken.zText,sToken.nText);
      if( pDecl==0 ) continue;

      /*
      ** If we get this far, we've found an identifier that has a
      ** declaration in the database.  Now see if we the full declaration
      ** or just a forward declaration.
      */
      GetNonspaceToken(&sIn,&sNext);
      if( sNext.zText[0]=='*' ){
        needFullDecl = 0;
      }else{
        needFullDecl = 1;
        nextValid = sNext.eType==TT_Id;
      }

      /*
      ** Generate the needed declaration.
      */
      DeclareObject(pDecl,pState,needFullDecl);
    }else if( sToken.eType==TT_Preprocessor ){
      sIn.i -= sToken.nText - 1;
    }
  }
  /* printf("END SCANTEXT\n"); */
}

/*
** Provide a full declaration to any object which so far has had only
** a forward declaration.
*/
static void CompleteForwardDeclarations(GenState *pState){
  Decl *pDecl;
  int progress;

  do{
    progress = 0;
    for(pDecl=pDeclFirst; pDecl; pDecl=pDecl->pNext){
      if( DeclHasProperty(pDecl,DP_Forward)
       && !DeclHasProperty(pDecl,DP_Declared)
      ){
        DeclareObject(pDecl,pState,1);
        progress = 1;
        assert( DeclHasProperty(pDecl,DP_Declared) );
      }
    }
  }while( progress );
}

/*
** Generate an include file for the given source file.  Return the number
** of errors encountered.
**
** if nolocal_flag is true, then we do not generate declarations for
** objected marked DP_Local.
*/
static int MakeHeader(InFile *pFile, FILE *report, int nolocal_flag){
  int nErr = 0;
  GenState sState;
  String outStr;
  IdentTable includeTable;
  Ident *pId;
  char *zNewVersion;
  char *zOldVersion;

  if( pFile->zHdr==0 || *pFile->zHdr==0 ) return 0;
  sState.pStr = &outStr;
  StringInit(&outStr);
  StringAppend(&outStr,zTopLine,nTopLine);
  sState.pTable = &includeTable;
  memset(&includeTable,0,sizeof(includeTable));
  sState.zIf = 0;
  sState.nErr = 0;
  sState.zFilename = pFile->zSrc;
  sState.flags = pFile->flags & DP_Cplusplus;
  ResetDeclFlags(nolocal_flag ? "no" : pFile->zSrc);
  for(pId = pFile->idTable.pList; pId; pId=pId->pNext){
    Decl *pDecl = FindDecl(pId->zName,0);
    if( pDecl ){
      DeclareObject(pDecl,&sState,1);
    }
  }
  CompleteForwardDeclarations(&sState);
  ChangeIfContext(0,&sState);
  nErr += sState.nErr;
  zOldVersion = ReadFile(pFile->zHdr);
  zNewVersion = StringGet(&outStr);
  if( report ) fprintf(report,"%s: ",pFile->zHdr);
  if( zOldVersion==0 ){
    if( report ) fprintf(report,"updated\n");
    if( WriteFile(pFile->zHdr,zNewVersion) ){
      fprintf(stderr,"%s: Can't write to file\n",pFile->zHdr);
      nErr++;
    }
  }else if( strncmp(zOldVersion,zTopLine,nTopLine)!=0 ){
    if( report ) fprintf(report,"error!\n");
    fprintf(stderr,
       "%s: Can't overwrite this file because it wasn't previously\n"
       "%*s  generated by 'makeheaders'.\n",
       pFile->zHdr, (int)strlen(pFile->zHdr), "");
    nErr++;
  }else if( strcmp(zOldVersion,zNewVersion)!=0 ){
    if( report ) fprintf(report,"updated\n");
    if( WriteFile(pFile->zHdr,zNewVersion) ){
      fprintf(stderr,"%s: Can't write to file\n",pFile->zHdr);
      nErr++;
    }
  }else if( report ){
    fprintf(report,"unchanged\n");
  }
  SafeFree(zOldVersion);
  IdentTableReset(&includeTable);
  StringReset(&outStr);
  return nErr;
}

/*
** Generate a global header file -- a header file that contains all
** declarations.  If the forExport flag is true, then only those
** objects that are exported are included in the header file.
*/
static int MakeGlobalHeader(int forExport){
  GenState sState;
  String outStr;
  IdentTable includeTable;
  Decl *pDecl;

  sState.pStr = &outStr;
  StringInit(&outStr);
  /* StringAppend(&outStr,zTopLine,nTopLine); */
  sState.pTable = &includeTable;
  memset(&includeTable,0,sizeof(includeTable));
  sState.zIf = 0;
  sState.nErr = 0;
  sState.zFilename = "(all)";
  sState.flags = 0;
  ResetDeclFlags(0);
  for(pDecl=pDeclFirst; pDecl; pDecl=pDecl->pNext){
    if( forExport==0 || DeclHasProperty(pDecl,DP_Export) ){
      DeclareObject(pDecl,&sState,1);
    }
  }
  ChangeIfContext(0,&sState);
  printf("%s",StringGet(&outStr));
  IdentTableReset(&includeTable);
  StringReset(&outStr);
  return 0;
}

#ifdef DEBUG
/*
** Return the number of characters in the given string prior to the
** first newline.
*/
static int ClipTrailingNewline(char *z){
  int n = strlen(z);
  while( n>0 && (z[n-1]=='\n' || z[n-1]=='\r') ){ n--; }
  return n;
}

/*
** Dump the entire declaration list for debugging purposes
*/
static void DumpDeclList(void){
  Decl *pDecl;

  for(pDecl = pDeclFirst; pDecl; pDecl=pDecl->pNext){
    printf("**** %s from file %s ****\n",pDecl->zName,pDecl->zFile);
    if( pDecl->zIf ){
      printf("If: [%.*s]\n",ClipTrailingNewline(pDecl->zIf),pDecl->zIf);
    }
    if( pDecl->zFwd ){
      printf("Decl: [%.*s]\n",ClipTrailingNewline(pDecl->zFwd),pDecl->zFwd);
    }
    if( pDecl->zDecl ){
      InsertExtraDecl(pDecl);
      printf("Def: [%.*s]\n",ClipTrailingNewline(pDecl->zDecl),pDecl->zDecl);
    }
    if( pDecl->flags ){
      static struct {
        int mask;
        char *desc;
      } flagSet[] = {
        { TY_Class,       "class" },
        { TY_Enumeration, "enum" },
        { TY_Structure,   "struct" },
        { TY_Union,       "union" },
        { TY_Variable,    "variable" },
        { TY_Subroutine,  "function" },
        { TY_Typedef,     "typedef" },
        { TY_Macro,       "macro" },
        { DP_Export,      "export" },
        { DP_Local,       "local" },
        { DP_Cplusplus,   "C++" },
      };
      int i;
      printf("flags:");
      for(i=0; i<sizeof(flagSet)/sizeof(flagSet[0]); i++){
        if( flagSet[i].mask & pDecl->flags ){
          printf(" %s", flagSet[i].desc);
        }
      }
      printf("\n");
    }
    if( pDecl->pInclude ){
      Include *p;
      printf("includes:");
      for(p=pDecl->pInclude; p; p=p->pNext){
        printf(" %s",p->zFile);
      }
      printf("\n");
    }
  }
}
#endif

/*
** When the "-doc" command-line option is used, this routine is called
** to print all of the database information to standard output.
*/
static void DocumentationDump(void){
  Decl *pDecl;
  static struct {
    int mask;
    char flag;
  } flagSet[] = {
    { TY_Class,       'c' },
    { TY_Enumeration, 'e' },
    { TY_Structure,   's' },
    { TY_Union,       'u' },
    { TY_Variable,    'v' },
    { TY_Subroutine,  'f' },
    { TY_Typedef,     't' },
    { TY_Macro,       'm' },
    { DP_Export,      'x' },
    { DP_Local,       'l' },
    { DP_Cplusplus,   '+' },
  };

  for(pDecl = pDeclFirst; pDecl; pDecl=pDecl->pNext){
    int i;
    int nLabel = 0;
    char *zDecl;
    char zLabel[50];
    for(i=0; i<sizeof(flagSet)/sizeof(flagSet[0]); i++){
      if( DeclHasProperty(pDecl,flagSet[i].mask) ){
        zLabel[nLabel++] = flagSet[i].flag;
      }
    }
    if( nLabel==0 ) continue;
    zLabel[nLabel] = 0;
    InsertExtraDecl(pDecl);
    zDecl = pDecl->zDecl;
    if( zDecl==0 ) zDecl = pDecl->zFwd;
    printf("%s %s %s %p %d %d %d %d %d\n",
       pDecl->zName,
       zLabel,
       pDecl->zFile,
       pDecl->pComment,
       pDecl->pComment ? pDecl->pComment->nText+1 : 0,
       pDecl->zIf ? (int)strlen(pDecl->zIf)+1 : 0,
       zDecl ? (int)strlen(zDecl) : 0,
       pDecl->pComment ? pDecl->pComment->nLine : 0,
       pDecl->tokenCode.nText ? pDecl->tokenCode.nText+1 : 0
    );
    if( pDecl->pComment ){
      printf("%.*s\n",pDecl->pComment->nText, pDecl->pComment->zText);
    }
    if( pDecl->zIf ){
      printf("%s\n",pDecl->zIf);
    }
    if( zDecl ){
      printf("%s",zDecl);
    }
    if( pDecl->tokenCode.nText ){
      printf("%.*s\n",pDecl->tokenCode.nText, pDecl->tokenCode.zText);
    }
  }
}

/*
** Given the complete text of an input file, this routine prints a
** documentation record for the header comment at the beginning of the
** file (if the file has a header comment.)
*/
void PrintModuleRecord(const char *zFile, const char *zFilename){
  int i;
  static int addr = 5;
  while( isspace(*zFile) ){ zFile++; }
  if( *zFile!='/' || zFile[1]!='*' ) return;
  for(i=2; zFile[i] && (zFile[i-1]!='/' || zFile[i-2]!='*'); i++){}
  if( zFile[i]==0 ) return;
  printf("%s M %s %d %d 0 0 0 0\n%.*s\n",
    zFilename, zFilename, addr, i+1, i, zFile);
  addr += 4;
}


/*
** Given an input argument to the program, construct a new InFile
** object.
*/
static InFile *CreateInFile(char *zArg, int *pnErr){
  int nSrc;
  char *zSrc;
  InFile *pFile;
  int i;

  /*
  ** Get the name of the input file to be scanned.  The input file is
  ** everything before the first ':' or the whole file if no ':' is seen.
  **
  ** Except, on windows, ignore any ':' that occurs as the second character
  ** since it might be part of the drive specifier.  So really, the ":' has
  ** to be the 3rd or later character in the name.  This precludes 1-character
  ** file names, which really should not be a problem.
  */
  zSrc = zArg;
  for(nSrc=2; zSrc[nSrc] && zArg[nSrc]!=':'; nSrc++){}
  pFile = SafeMalloc( sizeof(InFile) );
  memset(pFile,0,sizeof(InFile));
  pFile->zSrc = StrDup(zSrc,nSrc);

  /* Figure out if we are dealing with C or C++ code.  Assume any
  ** file with ".c" or ".h" is C code and all else is C++.
  */
  if( nSrc>2 && zSrc[nSrc-2]=='.' && (zSrc[nSrc-1]=='c' || zSrc[nSrc-1]=='h')){
    pFile->flags &= ~DP_Cplusplus;
  }else{
    pFile->flags |= DP_Cplusplus;
  }

  /*
  ** If a separate header file is specified, use it
  */
  if( zSrc[nSrc]==':' ){
    int nHdr;
    char *zHdr;
    zHdr = &zSrc[nSrc+1];
    for(nHdr=0; zHdr[nHdr]; nHdr++){}
    pFile->zHdr = StrDup(zHdr,nHdr);
  }

  /* Look for any 'c' or 'C' in the suffix of the file name and change
  ** that character to 'h' or 'H' respectively.  If no 'c' or 'C' is found,
  ** then assume we are dealing with a header.
  */
  else{
    int foundC = 0;
    pFile->zHdr = StrDup(zSrc,nSrc);
    for(i = nSrc-1; i>0 && pFile->zHdr[i]!='.'; i--){
      if( pFile->zHdr[i]=='c' ){
        foundC = 1;
        pFile->zHdr[i] = 'h';
      }else if( pFile->zHdr[i]=='C' ){
        foundC = 1;
        pFile->zHdr[i] = 'H';
      }
    }
    if( !foundC ){
      SafeFree(pFile->zHdr);
      pFile->zHdr = 0;
    }
  }

  /*
  ** If pFile->zSrc contains no 'c' or 'C' in its extension, it
  ** must be a header file.   In that case, we need to set the
  ** PS_Interface flag.
  */
  pFile->flags |= PS_Interface;
  for(i=nSrc-1; i>0 && zSrc[i]!='.'; i--){
    if( zSrc[i]=='c' || zSrc[i]=='C' ){
      pFile->flags &= ~PS_Interface;
      break;
    }
  }

  /* Done!
  */
  return pFile;
}

/* Local strcpy() clone to squelch an unwarranted warning from OpenBSD. */
static void local_strcpy(char *dest, const char *src){
  while( (*(dest++) = *(src++))!=0 ){}
}

/* MS-Windows and MS-DOS both have the following serious OS bug:  the
** length of a command line is severely restricted.  But this program
** occasionally requires long command lines.  Hence the following
** work around.
**
** If the parameters "-f FILENAME" appear anywhere on the command line,
** then the named file is scanned for additional command line arguments.
** These arguments are substituted in place of the "FILENAME" argument
** in the original argument list.
**
** This first parameter to this routine is the index of the "-f"
** parameter in the argv[] array.  The argc and argv are passed by
** pointer so that they can be changed.
**
** Parsing of the parameters in the file is very simple.  Parameters
** can be separated by any amount of white-space (including newlines
** and carriage returns.)  There are now quoting characters of any
** kind.  The length of a token is limited to about 1000 characters.
*/
static void AddParameters(int index, int *pArgc, char ***pArgv){
  int argc = *pArgc;      /* The original argc value */
  char **argv = *pArgv;   /* The original argv value */
  int newArgc;            /* Value for argc after inserting new arguments */
  char **zNew = 0;        /* The new argv after this routine is done */
  char *zFile;            /* Name of the input file */
  int nNew = 0;           /* Number of new entries in the argv[] file */
  int nAlloc = 0;         /* Space allocated for zNew[] */
  int i;                  /* Loop counter */
  int n;                  /* Number of characters in a new argument */
  int c;                  /* Next character of input */
  int startOfLine = 1;    /* True if we are where '#' can start a comment */
  FILE *in;               /* The input file */
  char zBuf[1000];        /* A single argument is accumulated here */

  if( index+1==argc ) return;
  zFile = argv[index+1];
  in = fopen(zFile,"r");
  if( in==0 ){
    fprintf(stderr,"Can't open input file \"%s\"\n",zFile);
    exit(1);
  }
  c = ' ';
  while( c!=EOF ){
    while( c!=EOF && isspace(c) ){
      if( c=='\n' ){
        startOfLine = 1;
      }
      c = getc(in);
      if( startOfLine && c=='#' ){
        while( c!=EOF && c!='\n' ){
          c = getc(in);
        }
      }
    }
    n = 0;
    while( c!=EOF && !isspace(c) ){
      if( n<sizeof(zBuf)-1 ){ zBuf[n++] = c; }
      startOfLine = 0;
      c = getc(in);
    }
    zBuf[n] = 0;
    if( n>0 ){
      nNew++;
      if( nNew + argc > nAlloc ){
        if( nAlloc==0 ){
          nAlloc = 100 + argc;
          zNew = malloc( sizeof(char*) * nAlloc );
        }else{
          nAlloc *= 2;
          zNew = realloc( zNew, sizeof(char*) * nAlloc );
        }
      }
      if( zNew ){
        int j = nNew + index;
        zNew[j] = malloc( n + 1 );
        if( zNew[j] ){
          local_strcpy( zNew[j], zBuf );
        }
      }
    }
  }
  fclose(in);
  newArgc = argc + nNew - 1;
  for(i=0; i<=index; i++){
    zNew[i] = argv[i];
  }
  for(i=nNew + index + 1; i<newArgc; i++){
    zNew[i] = argv[i + 1 - nNew];
  }
  zNew[newArgc] = 0;
  *pArgc = newArgc;
  *pArgv = zNew;
}

#ifdef NOT_USED
/*
** Return the time that the given file was last modified.  If we can't
** locate the file (because, for example, it doesn't exist), then
** return 0.
*/
static unsigned int ModTime(const char *zFilename){
  unsigned int mTime = 0;
  struct stat sStat;
  if( stat(zFilename,&sStat)==0 ){
    mTime = sStat.st_mtime;
  }
  return mTime;
}
#endif

/*
** Print a usage comment for this program.
*/
static void Usage(const char *argv0, const char *argvN){
  fprintf(stderr,"%s: Illegal argument \"%s\"\n",argv0,argvN);
  fprintf(stderr,"Usage: %s [options] filename...\n"
    "Options:\n"
    "  -h          Generate a single .h to standard output.\n"
    "  -H          Like -h, but only output EXPORT declarations.\n"
    "  -v          (verbose) Write status information to the screen.\n"
    "  -doc        Generate no header files.  Instead, output information\n"
    "              that can be used by an automatic program documentation\n"
    "              and cross-reference generator.\n"
    "  -local      Generate prototypes for \"static\" functions and\n"
    "              procedures.\n"
    "  -f FILE     Read additional command-line arguments from the file named\n"
    "              \"FILE\".\n"
#ifdef DEBUG
    "  -! MASK     Set the debugging mask to the number \"MASK\".\n"
#endif
    "  --          Treat all subsequent comment-line parameters as filenames,\n"
    "              even if they begin with \"-\".\n",
    argv0
  );
}

/*
** The following text contains a few simple #defines that we want
** to be available to every file.
*/
static const char zInit[] =
  "#define INTERFACE 0\n"
  "#define EXPORT_INTERFACE 0\n"
  "#define LOCAL_INTERFACE 0\n"
  "#define EXPORT\n"
  "#define LOCAL static\n"
  "#define PUBLIC\n"
  "#define PRIVATE\n"
  "#define PROTECTED\n"
;

#if TEST==0
int main(int argc, char **argv){
  int i;                /* Loop counter */
  int nErr = 0;         /* Number of errors encountered */
  Token *pList;         /* List of input tokens for one file */
  InFile *pFileList = 0;/* List of all input files */
  InFile *pTail = 0;    /* Last file on the list */
  InFile *pFile;        /* for looping over the file list */
  int h_flag = 0;       /* True if -h is present.  Output unified header */
  int H_flag = 0;       /* True if -H is present.  Output EXPORT header */
  int v_flag = 0;       /* Verbose */
  int noMoreFlags;      /* True if -- has been seen. */
  FILE *report;         /* Send progress reports to this, if not NULL */

  noMoreFlags = 0;
  for(i=1; i<argc; i++){
    if( argv[i][0]=='-' && !noMoreFlags ){
      switch( argv[i][1] ){
        case 'h':   h_flag = 1;   break;
        case 'H':   H_flag = 1;   break;
        case 'v':   v_flag = 1;   break;
        case 'd':   doc_flag = 1; proto_static = 1; break;
        case 'l':   proto_static = 1; break;
        case 'f':   AddParameters(i, &argc, &argv); break;
        case '-':   noMoreFlags = 1;   break;
#ifdef DEBUG
        case '!':   i++;  debugMask = strtol(argv[i],0,0); break;
#endif
        default:    Usage(argv[0],argv[i]); return 1;
      }
    }else{
      pFile = CreateInFile(argv[i],&nErr);
      if( pFile ){
        if( pFileList ){
          pTail->pNext = pFile;
          pTail = pFile;
        }else{
          pFileList = pTail = pFile;
        }
      }
    }
  }
  if( h_flag && H_flag ){
    h_flag = 0;
  }
  if( v_flag ){
    report = (h_flag || H_flag) ? stderr : stdout;
  }else{
    report = 0;
  }
  if( nErr>0 ){
    return nErr;
  }
  for(pFile=pFileList; pFile; pFile=pFile->pNext){
    char *zFile;

    zFilename = pFile->zSrc;
    if( zFilename==0 ) continue;
    zFile = ReadFile(zFilename);
    if( zFile==0 ){
      fprintf(stderr,"Can't read input file \"%s\"\n",zFilename);
      nErr++;
      continue;
    }
    if( strncmp(zFile,zTopLine,nTopLine)==0 ){
      pFile->zSrc = 0;
    }else{
      if( report ) fprintf(report,"Reading %s...\n",zFilename);
      pList = TokenizeFile(zFile,&pFile->idTable);
      if( pList ){
        nErr += ParseFile(pList,pFile->flags);
        FreeTokenList(pList);
      }else if( zFile[0]==0 ){
        fprintf(stderr,"Input file \"%s\" is empty.\n", zFilename);
        nErr++;
      }else{
        fprintf(stderr,"Errors while processing \"%s\"\n", zFilename);
        nErr++;
      }
    }
    if( !doc_flag ) SafeFree(zFile);
    if( doc_flag ) PrintModuleRecord(zFile,zFilename);
  }
  if( nErr>0 ){
    return nErr;
  }
#ifdef DEBUG
  if( debugMask & DECL_DUMP ){
    DumpDeclList();
    return nErr;
  }
#endif
  if( doc_flag ){
    DocumentationDump();
    return nErr;
  }
  zFilename = "--internal--";
  pList = TokenizeFile(zInit,0);
  if( pList==0 ){
    return nErr+1;
  }
  ParseFile(pList,PS_Interface);
  FreeTokenList(pList);
  if( h_flag || H_flag ){
    nErr += MakeGlobalHeader(H_flag);
  }else{
    for(pFile=pFileList; pFile; pFile=pFile->pNext){
      if( pFile->zSrc==0 ) continue;
      nErr += MakeHeader(pFile,report,0);
    }
  }
  return nErr;
}
#endif
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<html>
<head><title>The Makeheaders Program</title></head>
<body bgcolor=white>
<h1 align=center>The Makeheaders Program</h1>


<p>
This document describes <em>makeheaders</em>,
a tool that automatically generates &#8220;<code>.h</code>&#8221;
files for a C or C++ programming project.
</p>


<h2>Table Of Contents</h2>

<ul>
<li><a href="#H0002">1,0 Background</a>
<ul>
<li><a href="#H0003">1.1 Problems With The Traditional Approach</a>

<li><a href="#H0004">1.2 The Makeheaders Solution</a>
</ul>
<li><a href="#H0005">2.0 Running The Makeheaders Program</a>

<li><a href="#H0006">3.0 Preparing Source Files For Use With Makeheaders</a>
<ul>
<li><a href="#H0007">3.1 The Basic Setup</a>

<li><a href="#H0008">3.2 What Declarations Get Copied</a>

<li><a href="#H0009">3.3 How To Avoid Having To Write Any Header Files</a>

<li><a href="#H0010">3.4 Designating Declarations For Export</a>

<li><a href="#H0011">3.5 Local declarations processed by makeheaders</a>

<li><a href="#H0012">3.6 Using Makeheaders With C++ Code</a>

<li><a href="#H0013">3.7 Conditional Compilation</a>

<li><a href="#H0014">3.8 Caveats</a>
</ul>
<li><a href="#H0015">4.0 Using Makeheaders To Generate Documentation</a>

<li><a href="#H0016">5.0 Compiling The Makeheaders Program</a>

<li><a href="#H0017">6.0 History</a>

<li><a href="#H0018">7.0 Summary And Conclusion</a>
</ul><a name="H0002"></a>
<h2>1.0 Background</h2>

<p>
A piece of C source code can be one of two things:
a <em>declaration</em> or a <em>definition</em>.
A declaration is source text that gives information to the
compiler but doesn't directly result in any code being generated.
A definition is source text that results in executable machine
instructions or initialization data.
(These two terms are sometimes used inconsistently by other authors.
In particular, many people reverse the meanings of these words when
discussing Pascal or Ada code.
The meanings described here are the same as used in the ANSI-C
standards document.)
</p>

<p>
Declarations in C include things such as the following:
<ul>
<li> Typedefs.
<li> Structure, union and enumeration declarations.
<li> Function and procedure prototypes.
<li> Preprocessor macros and #defines.
<li> &#8220;<code>extern</code>&#8221; variable declarations.
</ul>
</p>

<p>
Definitions in C, on the other hand, include these kinds of things:
<ul>
<li> Variable definitions.
<li> The bodies of functions and procedures.
<li> Initialization data.
</ul>
</p>

<p>
The distinction between a declaration and a definition is common in
modern software engineering.
Another way of looking at the difference is that the declaration
is the <em>interface</em> and the definition is the <em>implementation</em>.
</p>

<p>
In C programs, it has always been the tradition that declarations are
put in files with the &#8220;<code>.h</code>&#8221; suffix and definitions are
placed in &#8220;<code>.c</code>&#8221; files.
The .c files contain &#8220;<code>#include</code>&#8221; preprocessor statements
that cause the contents of .h files to be included as part of the
source code when the .c file is compiled.
In this way, the .h files define the interface to a subsystem and
the .c files define how the subsystem is implemented.
</p>

<a name="H0003"></a>
<h3>1.1 Problems With The Traditional Approach</h3>

<p>
As the art of computer programming continues to advance, and the size
and complexity of programs continues to swell, the traditional C
approach of placing declarations and definitions in separate files begins
to present the programmer with logistics and
maintenance problems.
To wit:
</p>

<p>
<ol>
<p><li>
In large codes with many source files, it becomes difficult to determine
which .h files should be included in which .c files.
<p><li>
It is typically the case that a .h file will be forced to include
another .h files, which in turn might include other .h files,
and so forth.
The .c file must be recompiled when any of the .h files in this chain
are altered, but it can be difficult to determine what .h files are found
in the include chain.
A frequent Makefile error is to omit some .h files from a dependency
list even though those files are on the include file chain.
<p><li>
Some information is common to both the declaration and the definition of
an object in C, and so must be repeated in both the .h and the .c files
for that object.
In a large project, it can become increasingly difficult to keep the two
files in sync.
<p><li>
When a .c file includes a .h file and the .h files changes, the .c file
must be recompiled, even if the part of the .h file that changed is not
actually used by the .c file.
In a large program, it is generally the case that almost every .c file ends up
depending on one or two of the more important .h files, and so when those .h
files change, the entire program must be recompiled.
It also happens that those important .h files tend to be the ones that
change most frequently.
This means that the entire program must be recompiled frequently,
leading to a lengthy modify-compile-test cycle and a corresponding
decrease in programmer productivity.
<p><li>
The C programming language requires that declarations depending upon
each other must occur in a particular order.
In a program with complex, interwoven data structures, the correct
declaration order can become very difficult to determine manually,
especially when the declarations involved are spread out over several
files.
</ol>
</p>

<a name="H0004"></a>
<h3>1.2 The Makeheaders Solution</h3>

<p>
The makeheaders program is designed to ameliorate the problems associated
with the traditional C programming model by automatically generating
the interface information in the .h files from
interface information contained in other .h files and
from implementation information in the .c files.
When the makeheaders program is run, it scans the source
files for a project,
then generates a series of new .h files, one for each .c file.
The generated .h files contain exactly those declarations required by the
corresponding .c files, no more and no less.
</p>

<p>
The makeheaders programming model overcomes all of the objections to the
traditional C programming model.
<ol>
<p><li>
Because all declarations needed by a .c file are contained in a
single .h file, there is never any question about what .h files
a .c will need to include.  If the .c file is named
<code>alpha.c</code> then it must include only the single .h file
named <code>alpha.h</code>.
(The .c file might also use some include files from the standard
library, such as <code>&lt;stdio.h&gt</code>, but that is another matter.)
<p><li>
The generated .h files do not include other .h files, and so there
are no include chains to worry about.
The file <code>alpha.c</code> depends on <code>alpha.h</code> and
nothing more.
<p><li>
There is still duplication in the .h and the .c file, but because
the duplicate information is automatically generated, it is no longer
a problem.
Simply rerun makeheaders to resynchronize everything.
<p><li>
The generated .h file contains the minimal set of declarations needed
by the .c file.
This means that when something changes, a minimal amount of recompilation
is required to produce an updated executable.
Experience has shown that this gives a dramatic improvement
in programmer productivity by facilitating a rapid modify-compile-test
cycle during development.
<p><li>
The makeheaders program automatically sorts declarations into the
correct order, completely eliminating the wearisome and error-prone
task of sorting declarations by hand.
</ol>
<p>

<p>
In addition, the makeheaders program is fast and unintrusive.
It is a simple matter to incorporate makeheaders into a Makefile
so that makeheaders will be run automatically whenever the project
is rebuilt.
And the burden of running makeheaders is light.
It will easily process tens of thousands of lines of source
code per second.
</p>

<a name="H0005"></a>
<h2>2.0 Running The Makeheaders Program</h2>

<p>
The makeheaders program is very easy to run.
If you have a collection of C source code and include files in the working
directory, then you can run makeheaders to generate appropriate .h
files using the following command:
<pre>
   makeheaders *.[ch]
</pre>
That's really all there is to it!
This command will generate one .h file for every .c file.
Any .h files that were generated by a prior run of makeheaders
are ignored,
but manually entered .h files
that contain structure declarations and so forth will be scanned and
the declarations will be copied into the generated .h files as
appropriate.
But if makeheaders sees that the .h file that it has generated is no
different from the .h file it generated last time, it doesn't update
the file.
This prevents the corresponding .c files from having to
be needlessly recompiled.
</p>

<p>
There are several options to the makeheaders program that can
be used to alter its behavior.
The default behavior is to write a single .h file for each .c file and
to give the .h file the same base name as the .c file.
Instead of generating a whole mess of .h files, you can, if you choose,
generate a single big .h file that contains all declarations needed
by all the .c files.  Do this using the -h option to makeheaders.
As follows:
<pre>
   makeheaders -h *.[ch] >common.h
</pre>
With the -h option, the .h file is not actually written to a disk file but
instead appears on standard output, where you are free to redirect it
into the file of your choice.
</p>

<p>
A similar option is -H.  Like the lower-case -h option, big -H
generates a single include file on standard output.  But unlike
small -h, the big -H only emits prototypes and declarations that
have been designated as &#8220;exportable&#8221;.
The idea is that -H will generate an include file that defines
the interface to a library.
More will be said about this in section 3.4.
</p>

<p>
Sometimes you want the base name of the .c file and the .h file to
be different.
For example, suppose you want the include file for <code>alpha.c</code>
to be called <code>beta.h</code>.
In this case, you would invoke makeheaders as follows:
<pre>
   makeheaders alpha.c:beta.h
</pre>
Any time a filename argument contains a colon, the name before the
colon is taken to be the name of the .c file and the name after the
colon is taken to be the name of the .h file.
You can't use the shell's wildcard mechanism with this approach, but that
normally isn't a problem in Makefiles, which is where this stuff
comes in handy.
</p>

<p>
If you want a particular file to be scanned by makeheaders but you
don't want makeheaders to generate a header file for that file,
then you can supply an empty header filename, like this:
<pre>
   makeheaders alpha.c beta.c gamma.c:
</pre>
In this example, makeheaders will scan the three files named
&#8220;<code>alpha.c</code>&#8221;,
&#8220;<code>beta.c</code>&#8221; and
&#8220;<code>gamma.c</code>&#8221;
but because of the colon on the end of third filename
it will only generate headers for the first two files.
Unfortunately,
it is not possible to get makeheaders to process any file whose
name contains a colon.
</p>

<p>
In a large project, the length of the command line for makeheaders
can become very long.
If the operating system doesn't support long command lines
(example: DOS and Win32) you may not be able to list all of the
input files in the space available.
In that case, you can use the &#8220;<code>-f</code>&#8221; option followed
by the name of a file to cause makeheaders to read command line
options and filename from the file instead of from the command line.
For example, you might prepare a file named &#8220;<code>mkhdr.dat</code>&#8221;
that contains text like this:
<pre>
  src/alpha.c:hdr/alpha.h
  src/beta.c:hdr/beta.h
  src/gamma.c:hdr/gamma.h
  ...
</pre>
Then invoke makeheaders as follows:
<pre>
  makeheaders -f mkhdr.dat
</pre>
</p>

<p>
The &#8220;<code>-local</code>&#8221; option causes makeheaders to
generate of prototypes for &#8220;<code>static</code>&#8221; functions and
procedures.
Such prototypes are normally omitted.
</p>

<p>
Finally, makeheaders also includes a &#8220;<code>-doc</code>&#8221; option.
This command line option prevents makeheaders from generating any
headers at all.
Instead, makeheaders will write to standard output
information about every definition and declaration that it encounters
in its scan of source files.
The information output includes the type of the definition or
declaration and any comment that precedes the definition or
declaration.
The output is in a format that can be easily parsed, and is
intended to be read by another program that will generate
documentation about the program.
We'll talk more about this feature later.
</p>

<p>
If you forget what command line options are available, or forget
their exact name, you can invoke makeheaders using an unknown
command line option (like &#8220;<code>--help</code>&#8221; or
&#8220;<code>-?</code>&#8221;)
and it will print a summary of the available options on standard
error.
If you need to process a file whose name begins with
&#8220;<code>-</code>&#8221;,
you can prepend a &#8220;<code>./</code>&#8221; to its name in order to get it
accepted by the command line parser.
Or, you can insert the special option &#8220;<code>--</code>&#8221; on the
command line to cause all subsequent command line arguments to be treated as
filenames even if their names begin with &#8220;<code>-</code>&#8221;.
</p>

<a name="H0006"></a>
<h2>3.0 Preparing Source Files For Use With Makeheaders</h2>

<p>
Very little has to be done to prepare source files for use with
makeheaders since makeheaders will read and understand ordinary
C code.
But it is important that you structure your files in a way that
makes sense in the makeheaders context.
This section will describe several typical uses of makeheaders.
</p>

<a name="H0007"></a>
<h3>3.1 The Basic Setup</h3>

<p>
The simplest way to use makeheaders is to put all definitions in
one or more .c files and all structure and type declarations in
separate .h files.
The only restriction is that you should take care to chose basenames
for your .h files that are different from the basenames for your
.c files.
Recall that if your .c file is named (for example)
&#8220;<code>alpha.c</code>&#8221;
makeheaders will attempt to generate a corresponding header file
named &#8220;<code>alpha.h</code>&#8221;.
For that reason, you don't want to use that name for
any of the .h files you write since that will prevent makeheaders
from generating the .h file automatically.
</p>

<p>
The structure of a .c file intended for use with makeheaders is very
simple.
All you have to do is add a single &#8220;<code>#include</code>&#8221; to the
top of the file that sources the header file that makeheaders will generate.
Hence, the beginning of a source file named &#8220;<code>alpha.c</code>&#8221;
might look something like this:
</p>

<pre>
   /*
    * Introductory comment...
    */
   #include "alpha.h"

   /* The rest of your code... */
</pre>

<p>
Your manually generated header files require no special attention at all.
Code them as you normally would.
However, makeheaders will work better if you omit the
&#8220;<code>#if</code>&#8221; statements people often put around the outside of
header files that prevent the files from being included more than once.
For example, to create a header file named &#8220;<code>beta.h</code>&#8221;,
many people will habitually write the following:

<pre>
   #ifndef BETA_H
   #define BETA_H

   /* declarations for beta.h go here */

   #endif
</pre>

You can forego this cleverness with makeheaders.
Remember that the header files you write will never really be
included by any C code.
Instead, makeheaders will scan your header files to extract only
those declarations that are needed by individual .c files and then
copy those declarations to the .h files corresponding to the .c files.
Hence, the &#8220;<code>#if</code>&#8221; wrapper serves no useful purpose.
But it does make makeheaders work harder, forcing it to put
the statements

<pre>
   #if !defined(BETA_H)
   #endif
</pre>

around every declaration that it copies out of your header file.
No ill effect should come of this, but neither is there any benefit.
</p>

<p>
Having prepared your .c and .h files as described above, you can
cause makeheaders to generate its .h files using the following simple
command:

<pre>
   makeheaders *.[ch]
</pre>

The makeheaders program will scan all of the .c files and all of the
manually written .h files and then automatically generate .h files
corresponding to all .c files.
</p>

<p>
Note that
the wildcard expression used in the above example,
&#8220;<code>*.[ch]</code>&#8221;,
will expand to include all .h files in the current directory, both
those entered manually be the programmer and others generated automatically
by a prior run of makeheaders.
But that is not a problem.
The makeheaders program will recognize and ignore any files it
has previously generated that show up on its input list.
</p>

<a name="H0008"></a>
<h3>3.2 What Declarations Get Copied</h3>

<p>
The following list details all of the code constructs that makeheaders
will extract and place in
the automatically generated .h files:
</p>

<ul>
<p><li>
When a function is defined in any .c file, a prototype of that function
is placed in the generated .h file of every .c file that
calls the function.</p>

<P>If the &#8220;<code>static</code>&#8221; keyword of C appears at the
beginning of the function definition, the prototype is suppressed.
If you use the &#8220;<code>LOCAL</code>&#8221; keyword where you would normally
say &#8220;<code>static</code>&#8221;, then a prototype is generated, but it
will only appear in the single header file that corresponds to the
source file containing the function.  For example, if the file
<code>alpha.c</code> contains the following:
<pre>
  LOCAL int testFunc(void){
    return 0;
  }
</pre>
Then the header file <code>alpha.h</code> will contain
<pre>
  #define LOCAL static
  LOCAL int testFunc(void);
</pre>
However, no other generated header files will contain a prototype for
<code>testFunc()</code> since the function has only file scope.</p>

<p>When the &#8220;<code>LOCAL</code>&#8221; keyword is used, makeheaders will
also generate a #define for LOCAL, like this:
<pre>
   #define LOCAL static
</pre>
so that the C compiler will know what it means.</p>

<p>If you invoke makeheaders with a &#8220;<code>-local</code>&#8221;
command-line option, then it treats the &#8220;<code>static</code>&#8221;
keyword like &#8220;<code>LOCAL</code>&#8221; and generates prototypes in the
header file that corresponds to the source file containing the function
definition.</p>

<p><li>
When a global variable is defined in a .c file, an
&#8220;<code>extern</code>&#8221;
declaration of that variable is placed in the header of every
.c file that uses the variable.
</p>

<p><li>
When a structure, union or enumeration declaration or a
function prototype or a C++ class declaration appears in a
manually produced .h file, that declaration is copied into the
automatically generated
.h files of all .c files that use the structure, union, enumeration,
function or class.
But declarations that appear in a
.c file are considered private to that .c file and are not copied into
any automatically generated files.
</p>

<p><li>
All #defines and typedefs that appear in manually produced .h files
are copied into automatically generated .h files as needed.
Similar constructs that appear in .c files are considered private to
those files and are not copied.
</p>

<p><li>
When a structure, union or enumeration declaration appears in a .h
file, makeheaders will automatically
generate a typedef that allows the declaration to be referenced without
the &#8220;<code>struct</code>&#8221;, &#8220;<code>union</code>&#8221; or
&#8220;<code>enum</code>&#8221; qualifier.
In other words, if makeheaders sees the code:
<pre>
  struct Examp { /* ... */ };
</pre>
it will automatically generate a corresponding typedef like this:
<pre>
  typedef struct Examp Examp;
</pre>
</p>

<p><li>
Makeheaders generates an error message if it encounters a function or
variable definition within a .h file.
The .h files are supposed to contain only interface, not implementation.
C compilers will not enforce this convention, but makeheaders does.
</ul>

<p>
As a final note, we observe that automatically generated declarations
are ordered as required by the ANSI-C programming language.
If the declaration of some structure &#8220;<code>X</code>&#8221; requires a
prior declaration of another structure &#8220;<code>Y</code>&#8221;, then Y will
appear first in the generated headers.
</p>

<a name="H0009"></a>
<h3>3.3 How To Avoid Having To Write Any Header Files</h3>

<p>
In my experience, large projects work better if all of the manually
written code is placed in .c files and all .h files are generated
automatically.
This is slightly different from the traditional C method of placing
the interface in .h files and the implementation in .c files, but
it is a refreshing change that brings a noticeable improvement to the
coding experience.
Others, I believe, share this view since I've
noticed recent languages (ex: java, tcl, perl, awk) tend to
support the one-file approach to coding as the only option.
</p>

<p>
The makeheaders program supports putting both
interface and implementation into the same source file.
But you do have to tell makeheaders which part of the source file is the
interface and which part is the implementation.
Makeheaders has to know this in order to be able to figure out whether or
not structures declarations, typedefs, #defines and so forth should
be copied into the generated headers of other source files.
</p>

<p>
You can instruct makeheaders to treat any part of a .c file as if
it were a .h file by enclosing that part of the .c file within:
<pre>
   #if INTERFACE
   #endif
</pre>
Thus any structure definitions that appear after the
&#8220;<code>#if INTERFACE</code>&#8221; but before the corresponding
&#8220;<code>#endif</code>&#8221; are eligible to be copied into the
automatically generated
.h files of other .c files.
</p>

<p>
If you use the &#8220;<code>#if INTERFACE</code>&#8221; mechanism in a .c file,
then the generated header for that .c file will contain a line
like this:
<pre>
   #define INTERFACE 0
</pre>
In other words, the C compiler will never see any of the text that
defines the interface.
But makeheaders will copy all necessary definitions and declarations
into the .h file it generates, so .c files will compile as if the
declarations were really there.
This approach has the advantage that you don't have to worry with
putting the declarations in the correct ANSI-C order -- makeheaders
will do that for you automatically.
</p>

<p>
Note that you don't have to use this approach exclusively.
You can put some declarations in .h files and others within the
&#8220;<code>#if INTERFACE</code>&#8221; regions of .c files.
Makeheaders treats all declarations alike, no matter where they
come from.
You should also note that a single .c file can contain as many
&#8220;<code>#if INTERFACE</code>&#8221; regions as desired.
</p>

<a name="H0010"></a>
<h3>3.4 Designating Declarations For Export</h3>

<p>
In a large project, one will often construct a hierarchy of
interfaces.
For example, you may have a group of 20 or so files that form
a library used in several other parts of the system.
Each file in this library will present two interfaces.
One interface will be the routines and data structures it is
willing to share with other files in the same library, and the
second interface is those routines and data structures it wishes
to make available to other subsystems.
(The second interface is normally a subset of the first.)
Ordinary C does not provide support for a tiered interface
like this, but makeheaders does.
</p>

<p>
Using makeheaders, it is possible to designate routines and data
structures as being for &#8220;<code>export</code>&#8221;.
Exported objects are visible not only to other files within the
same library or subassembly but also to other
libraries and subassemblies in the larger program.
By default, makeheaders only makes objects visible to other members
of the same library.
</p>

<p>
That isn't the complete truth, actually.
The semantics of C are such that once an object becomes visible
outside of a single source file, it is also visible to any user
of the library that is made from the source file.
Makeheaders can not prevent outsiders from using non-exported resources,
but it can discourage the practice by refusing to provide prototypes
and declarations for the services it does not want to export.
Thus the only real effect of the making an object exportable is
to include it in the output makeheaders generates when it is run
using the -H command line option.
This is not a perfect solution, but it works well in practice.
</p>

<p>
But trouble quickly arises when we attempt to devise a mechanism for
telling makeheaders which prototypes it should export and which it should
keep local.
The built-in &#8220;<code>static</code>&#8221; keyword of C works well for
prohibiting prototypes from leaving a single source file, but because C doesn't
support a linkage hierarchy, there is nothing in the C language to help us.
We'll have to invite our own keyword: &#8220;<code>EXPORT</code>&#8221;
</p>

<p>
Makeheaders allows the EXPORT keyword to precede any function or
procedure definition.
The routine following the EXPORT keyword is then eligable to appear
in the header file generated using the -H command line option.
Note that if a .c file contains the EXPORT keyword, makeheaders will
put the macro
<pre>
   #define EXPORT
</pre>
in the header file it generates for the .c file so that the EXPORT keyword
will never be seen by the C compiler.
</p>

<p>
But the EXPORT keyword only works for function and procedure definitions.
For structure, union and enum definitions, typedefs, #defines and
class declarations, a second mechanism is used.
Just as any declarations or definition contained within
<pre>
   #if INTERFACE
   #endif
</pre>
are visible to all files within the library, any declarations
or definitions within
<pre>
   #if EXPORT_INTERFACE
   #endif
</pre>
will become part of the exported interface.
The &#8220;<code>#if EXPORT_INTERFACE</code>&#8221; mechanism can be used in
either .c or .h files.
(The &#8220;<code>#if INTERFACE</code>&#8221; can also be used in both .h and
.c files, but since it's use in a .h file would be redundant, we haven't
mentioned it before.)
</p>

<a name="H0011"></a>
<h3>3.5 Local declarations processed by makeheaders</h3>

<p>
Structure declarations and typedefs that appear in .c files are normally
ignored by makeheaders.
Such declarations are only intended for use by the source file in which
they appear and so makeheaders doesn't need to copy them into any
generated header files.
We call such declarations &#8220;<code>private</code>&#8221;.
</p>

<p>
Sometimes it is convenient to have makeheaders sort a sequence
of private declarations into the correct order for us automatically.
Or, we could have static functions and procedures for which we would like
makeheaders to generate prototypes, but the arguments to these
functions and procedures uses private declarations.
In both of these cases, we want makeheaders to be aware of the
private declarations and copy them into the local header file,
but we don't want makeheaders to propagate the
declarations outside of the file in which they are declared.
</p>

<p>
When this situation arises, enclose the private declarations
within
<pre>
  #if LOCAL_INTERFACE
  #endif
</pre>
A &#8220;<code>LOCAL_INTERFACE</code>&#8221; block works very much like the
&#8220;<code>INTERFACE</code>&#8221; and
&#8220;<code>EXPORT_INTERFACE</code>&#8221;
blocks described above, except that makeheaders insures that the
objects declared in a LOCAL_INTERFACE are only visible to the
file containing the LOCAL_INTERFACE.
</p>

<a name="H0012"></a>
<h3>3.6 Using Makeheaders With C++ Code</h3>

<p>
You can use makeheaders to generate header files for C++ code, in
addition to C.
Makeheaders will recognize and copy both &#8220;<code>class</code>&#8221;
declarations
and inline function definitions, and it knows not to try to generate
prototypes for methods.
</p>

<p>
In fact, makeheaders is smart enough to be used in projects that employ
a mixture of C and C++.
For example, if a C function is called from within a C++ code module,
makeheaders will know to prepend the text
<pre>
   extern "C"
</pre>
to the prototype for that function in the C++ header file.
Going the other way,
if you try to call a C++ function from within C, an
appropriate error message is issued, since C++ routines can not
normally be called by C code (due to fact that most C++ compilers
use name mangling to facilitate type-safe linkage.)
</p>

<p>
No special command-line options are required to use makeheaders with
C++ input.  Makeheaders will recognize that its source code is C++
by the suffix on the source code filename.  Simple ".c" or ".h" suffixes
are assumed to be ANSI-C.  Anything else, including ".cc", ".C" and
".cpp" is assumed to be C++.
The name of the header file generated by makeheaders is derived from
the name of the source file by converting every "c" to "h" and
every "C" to "H" in the suffix of the filename.
Thus the C++ source
file &#8220;<code>alpha.cpp</code>&#8221; will induce makeheaders to
generate a header file named &#8220;<code>alpha.hpp</code>&#8221;.
</p>

<p>
Makeheaders augments class definitions by inserting prototypes to
methods where appropriate.  If a method definition begins with one
of the special keywords <b>PUBLIC</b>, <b>PROTECTED</b>, or
<b>PRIVATE</b> (in upper-case to distinguish them from the regular
C++ keywords with the same meaning) then a prototype for that
method will be inserted into the class definition.  If none of
these keywords appear, then the prototype is not inserted.  For
example, in the following code, the constructor is not explicitly
declared in the class definition but makeheaders will add it there
because of the PUBLIC keyword that appears before the constructor
definition.
</p>

<blockquote><pre>
#if INTERFACE
class Example1 {
private:
  int v1;
};
#endif
PUBLIC Example1::Example1(){
  v1 = 0;
}
</pre></blockquote>

<p>
The code above is equivalent to the following:
</p>

<blockquote><pre>
#if INTERFACE
class Example1 {
private:
  int v1;
public:
  Example1();
};
#endif
Example1::Example1(){
  v1 = 0;
}
</pre></blockquote>

<p>
The first form is preferred because only a single declaration of
the constructor is required.  The second form requires two declarations,
one in the class definition and one on the definition of the constructor.
</p>

<h4>3.6.1 C++ Limitations</h4>

<p>
Makeheaders does not understand more recent
C++ syntax such as templates and namespaces.
Perhaps these issues will be addressed in future revisions.
</p>

<a name="H0013"></a>
<h3>3.7 Conditional Compilation</h3>

<p>
The makeheaders program understands and tracks the conditional
compilation constructs in the source code files it scans.
Hence, if the following code appears in a source file
<pre>
  #ifdef UNIX
  #  define WORKS_WELL 1
  #else
  #  define WORKS_WELL 0
  #endif
</pre>
then the next patch of code will appear in the generated header for
every .c file that uses the WORKS_WELL constant:
<pre>
  #if defined(UNIX)
  #  define WORKS_WELL 1
  #endif
  #if !defined(UNIX)
  #  define WORKS_WELL 0
  #endif
</pre>
The conditional compilation constructs can be nested to any depth.
Makeheaders also recognizes the special case of
<pre>
  #if 0
  #endif
</pre>
and treats the enclosed text as a comment.
</p>

<a name="H0014"></a>
<h3>3.8 Caveats</h3>

<p>
The makeheaders system is designed to be robust
but it is possible for a devious programmer to fool the system,
usually with unhelpful consequences.
This subsection is a guide to helping you avoid trouble.
</p>

<p>
Makeheaders does not understand the old K&amp;R style of function
and procedure definitions.
It only understands the modern ANSI-C style, and will probably
become very confused if it encounters an old K&amp;R function.
Therefore you should take care to avoid putting K&amp;R function definitions
in your code.
</p>

<p>
Makeheaders does not understand when you define more than one
global variable with the same type separated by a comma.
In other words, makeheaders does not understand this:
<pre>
   int a = 4, b = 5;
</pre>
The makeheaders program wants every variable to have its own
definition.  Like this:
<pre>
   int a = 4;
   int b = 5;
</pre>
Notice that this applies to global variables only, not to variables
you declare inside your functions.
Since global variables ought to be exceedingly rare, and since it is
good style to declare them separately anyhow, this restriction is
not seen as a terrible hardship.
</p>

<p>
Makeheaders does not support defining an enumerated or aggregate type in
the same statement as a variable declaration.  None of the following
statements work completely:
<pre>
struct {int field;} a;
struct Tag {int field;} b;
struct Tag c;
</pre>
Instead, define types separately from variables:
<pre>
#if INTERFACE
struct Tag {int field;};
#endif
Tag a;
Tag b; /* No more than one variable per declaration. */
Tag c; /* So must put each on its own line. */
</pre>
See <a href="#H0008">3.2 What Declarations Get Copied</a> for details,
including on the automatic typedef.
</p>

<p>
The makeheaders program processes its source file prior to sending
those files through the C preprocessor.
Hence, if you hide important structure information in preprocessor defines,
makeheaders might not be able to successfully extract the information
it needs from variables, functions and procedure definitions.
For example, if you write this:
<pre>
  #define BEGIN {
  #define END }
</pre>
at the beginning of your source file, and then try to create a function
definition like this:
<pre>
  char *StrDup(const char *zSrc)
    BEGIN
      /* Code here */
    END
</pre>
then makeheaders won't be able to find the end of the function definition
and bad things are likely to happen.
</p>

<p>
For most projects the code constructs that makeheaders cannot
handle are very rare.
As long as you avoid excessive cleverness, makeheaders will
probably be able to figure out what you want and will do the right
thing.
</p>

<p>
Makeheaders has limited understanding of enums.  In particular, it does
not realize the significance of enumerated values, so the enum is not
emitted in the header files when its enumerated values are used unless
the name associated with the enum is also used.  Moreover, enums can be
completely anonymous, e.g. &#8220;<code>enum {X, Y, Z};</code>&#8221;.
Makeheaders ignores such enums so they can at least be used within a
single source file.  Makeheaders expects you to use #define constants
instead.  If you want enum features that #define lacks, and you need the
enum in the interface, bypass makeheaders and write a header file by
hand, or teach makeheaders to emit the enum definition when any of the
enumerated values are used, rather than only when the top-level name (if
any) is used.
</p>

<a name="H0015"></a>
<h2>4.0 Using Makeheaders To Generate Documentation</h2>

<p>
Many people have observed the advantages of generating program
documentation directly from the source code:
<ul>
<li> Less effort is involved.  It is easier to write a program than
     it is to write a program and a document.
<li> The documentation is more likely to agree with the code.
     When documentation is derived directly from the code, or is
     contained in comments immediately adjacent to the code, it is much
     more likely to be correct than if it is contained in a separate
     unrelated file in a different part of the source tree.
<li> Information is kept in only one place.  When a change occurs
     in the code, it is not necessary to make a corresponding change
     in a separate document.  Just rerun the documentation generator.
</ul>
The makeheaders program does not generate program documentation itself.
But you can use makeheaders to parse the program source code, extract
the information that is relevant to the documentation and to pass this
information to another tool to do the actual documentation preparation.
</p>

<p>
When makeheaders is run with the &#8220;<code>-doc</code>&#8221; option, it
emits no header files at all.
Instead, it does a complete dump of its internal tables to standard
output in a form that is easily parsed.
This output can then be used by another program (the implementation
of which is left as an exercise to the reader) that will use the
information to prepare suitable documentation.
</p>

<p>
The &#8220;<code>-doc</code>&#8221; option causes makeheaders to print
information to standard output about all of the following objects:
<ul>
<li> C++ class declarations
<li> Structure and union declarations
<li> Enumerations
<li> Typedefs
<li> Procedure and function definitions
<li> Global variables
<li> Preprocessor macros (ex: &#8220;<code>#define</code>&#8221;)
</ul>
For each of these objects, the following information is output:
<ul>
<li> The name of the object.
<li> The type of the object.  (Structure, typedef, macro, etc.)
<li> Flags to indicate if the declaration is exported (contained within
     an EXPORT_INTERFACE block) or local (contained with LOCAL_INTERFACE).
<li> A flag to indicate if the object is declared in a C++ file.
<li> The name of the file in which the object was declared.
<li> The complete text of any block comment that precedes the declarations.
<li> If the declaration occurred inside a preprocessor conditional
     (&#8220;<code>#if</code>&#8221;) then the text of that conditional is
     provided.
<li> The complete text of a declaration for the object.
</ul>
The exact output format will not be described here.
It is simple to understand and parse and should be obvious to
anyone who inspects some sample output.
</p>

<a name="H0016"></a>
<h2>5.0 Compiling The Makeheaders Program</h2>

<p>
The source code for makeheaders is a single file of ANSI-C code,
approximately 3000 lines in length.
The program makes only modest demands of the system and C library
and should compile without alteration on most ANSI C compilers
and on most operating systems.
It is known to compile using several variations of GCC for Unix
as well as Cygwin32 and MSVC 5.0 for Win32.
</p>

<a name="H0017"></a>
<h2>6.0 History</h2>

<p>
The makeheaders program was first written by D. Richard Hipp
(also the original author of
<a href="https://sqlite.org/">SQLite</a> and
<a href="https://fossil-scm.org/">Fossil</a>) in 1993.
Hipp open-sourced the project immediately, but it never caught
on with any other developers and it continued to be used mostly
by Hipp himself for over a decade.  When Hipp was first writing
the Fossil version control system in 2006 and 2007, he used
makeheaders on that project to help simplify the source code.
As the popularity of Fossil increased, the makeheaders
that was incorporated into the Fossil source tree became the
"official" makeheaders implementation.
</p>

<p>
As this paragraph is being composed (2016-11-05), Fossil is the
only project known to Hipp that is still using makeheaders.  On
the other hand, makeheaders has served the Fossil project well and
there are no plans remove it.
</p>

<a name="H0018"></a>
<h2>7.0 Summary And Conclusion</h2>

<p>
The makeheaders program will automatically generate a minimal header file
for each of a set of C source and header files, and will
generate a composite header file for the entire source file suite,
for either internal or external use.
It can also be used as the parser in an automated program
documentation system.
</p>

<p>
The makeheaders program has been in use since 1994,
in a wide variety of projects under both UNIX and Win32.
In every project where it has been used, makeheaders has proven
to be a very helpful aid
in the construction and maintenance of large C codes.
In at least two cases, makeheaders has facilitated development
of programs that would have otherwise been all but impossible
due to their size and complexity.
</p>
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#!/usr/bin/tclsh
#
#    ### Run this Tcl script EVERY time you modify it in any way! ###
#    ### It must be run from the directory it lives in so that    ###
#    ### directories resolve properly!                            ###
#
# This Tcl script generates make files for various platforms. The makefiles
# then need to be committed.
#
# If you modify this file then:
#
#     1. cd tools; tclsh makemake.tcl
#
#     2. if errors are reported, fix them and go to step 1
#
#     3. if "fossil diff" reports changes in any of the generated
#        files, commit the changed files to the repo
#
# Files generated include:
#
#     src/main.mk           # makefile for all unix systems
#     win/Makefile.mingw    # makefile for mingw on windows
#     win/Makefile.*        # makefiles for other windows compilers
#
# Add new source files by listing the files (without their .c suffix)
# in the "src" variable.  Add new resource files to the "extra_files"
# variable.  There are other variables that you can alter, down to
# the "STOP HERE" comment.  The stuff below "STOP HERE" should rarely need
# to change. After modification, go to step 1 above.
#
# Delete unused source files in the "src" variable, then go to step 1 above.
#
#############################################################################

# $srcDir is used to set the target source dir in several places. Not
# all code-generation bits use $srcDir and instead hard-code, so
# replacing it only here (should it ever changes) is not sufficient.
#
set srcDir ../src
# Directory $srcDirExt houses single-file source code solutions which
# are imported directly into the fossil source tree.
set srcDirExt ../extsrc

# Basenames of all source files that get preprocessed using
# "translate" and "makeheaders".  To add new C-language source files to the
# project, simply add the basename to this list and rerun this script.
#
# Set the separate extra_files variable further down for how to add non-C
# files, such as string and BLOB resources.
#

set src {
  add
  ajax
  alerts
  allrepo
  attach
  backlink
  backoffice
  bag
  bisect
  blob
  branch
  browse
  builtin
  bundle
  cache
  capabilities
  captcha
  cgi
  chat
  checkin
  checkout
  clearsign
  clone
  color
  comformat
  configure
  content
  cookies
  db
  delta
  deltacmd
  deltafunc
  descendants
  diff
  diffcmd
  dispatch
  doc
  encode
  etag
  event
  extcgi
  export
  file
  fileedit
  finfo
  foci
  forum
  fshell
  fusefs
  fuzz
  glob
  graph
  gzip
  hname
  hook
  http
  http_socket
  http_transport
  import
  info
  interwiki
  json
  json_artifact
  json_branch
  json_config
  json_diff
  json_dir
  json_finfo
  json_login
  json_query
  json_report
  json_status
  json_tag
  json_timeline
  json_user
  json_wiki
  leaf
  loadctrl
  login
  lookslike
  main
  manifest
  markdown
  markdown_html
  md5
  merge
  merge3
  moderate
  name
  patch
  path
  piechart
  pikchrshow
  pivot
  popen
  pqueue
  printf
  publish
  purge
  rebuild
  regexp
  repolist
  report
  rss
  schema
  search
  security_audit
  setup
  setupuser
  sha1
  sha1hard
  sha3
  shun
  sitemap
  skins
  smtp
  sqlcmd
  stash
  stat
  statrep
  style
  sync
  tag
  tar
  terminal
  th_main
  timeline
  tkt
  tktsetup
  undo
  unicode
  unversioned
  update
  url
  user
  utf8
  util
  verify
  vfile
  wiki
  wikiformat
  winfile
  winhttp
  xfer
  xfersetup
  zip
  http_ssl
}

# Source files which live under $srcDirExt, but only those for which
# we need to run makeheaders. External sources which have their own
# header files must not be in this list.
set src_ext {
  pikchr
}

# Additional resource files that get built into the executable.
# These paths are all resolved from the src/ directory, so must
# be relative to that.
set extra_files {
  diff.tcl
  markdown.md
  wiki.wiki
  *.js
  default.css
  style.*.css
  ../skins/*/*.txt
  sounds/*.wav
  alerts/*.wav
  ../extsrc/pikchr.wasm
  ../extsrc/pikchr*.js
}

# Options used to compile the included SQLite library.
#
set SQLITE_OPTIONS {
  -DNDEBUG=1
  -DSQLITE_DQS=0
  -DSQLITE_THREADSAFE=0
  -DSQLITE_DEFAULT_MEMSTATUS=0
  -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1
  -DSQLITE_LIKE_DOESNT_MATCH_BLOBS
  -DSQLITE_OMIT_DECLTYPE
  -DSQLITE_OMIT_DEPRECATED
  -DSQLITE_OMIT_PROGRESS_CALLBACK
  -DSQLITE_OMIT_SHARED_CACHE
  -DSQLITE_OMIT_LOAD_EXTENSION
  -DSQLITE_MAX_EXPR_DEPTH=0
  -DSQLITE_ENABLE_LOCKING_STYLE=0
  -DSQLITE_DEFAULT_FILE_FORMAT=4
  -DSQLITE_ENABLE_EXPLAIN_COMMENTS
  -DSQLITE_ENABLE_FTS4
  -DSQLITE_ENABLE_DBSTAT_VTAB
  -DSQLITE_ENABLE_FTS5
  -DSQLITE_ENABLE_STMTVTAB
  -DSQLITE_HAVE_ZLIB
  -DSQLITE_ENABLE_DBPAGE_VTAB
  -DSQLITE_TRUSTED_SCHEMA=0
  -DHAVE_USLEEP
}
#lappend SQLITE_OPTIONS -DSQLITE_ENABLE_FTS3=1
#lappend SQLITE_OPTIONS -DSQLITE_ENABLE_STAT4
#lappend SQLITE_OPTIONS -DSQLITE_WIN32_NO_ANSI
#lappend SQLITE_OPTIONS -DSQLITE_WINNT_MAX_PATH_CHARS=4096

# Options used to compile the Pikchr library.
#
set PIKCHR_OPTIONS {
  -DPIKCHR_TOKEN_LIMIT=10000
}

# Options used to compile the included SQLite shell.
#
set SHELL_OPTIONS [concat $SQLITE_OPTIONS {
  -Dmain=sqlite3_shell
  -DSQLITE_SHELL_IS_UTF8=1
  -DSQLITE_OMIT_LOAD_EXTENSION=1
  -DUSE_SYSTEM_SQLITE=$(USE_SYSTEM_SQLITE)
  -DSQLITE_SHELL_DBNAME_PROC=sqlcmd_get_dbname
  -DSQLITE_SHELL_INIT_PROC=sqlcmd_init_proc
}]

# Options used to compile the included SQLite shell on Windows.
#
set SHELL_WIN32_OPTIONS $SHELL_OPTIONS
lappend SHELL_WIN32_OPTIONS -Daccess=file_access
lappend SHELL_WIN32_OPTIONS -Dsystem=fossil_system
lappend SHELL_WIN32_OPTIONS -Dgetenv=fossil_getenv
lappend SHELL_WIN32_OPTIONS -Dfopen=fossil_fopen

# STOP HERE.
# Unless the build procedures changes, you should not have to edit anything
# below this line.
#############################################################################

# Name of the final application
#
set name fossil

# The "writeln" command sends output to the target makefile.
#
proc writeln {args} {
  global output_file
  if {[lindex $args 0]=="-nonewline"} {
    puts -nonewline $output_file [lindex $args 1]
  } else {
    puts $output_file [lindex $args 0]
  }
}

# Expand any wildcards in "extra_files"
set new_extra_files {}
foreach file $extra_files {
  # we need $file to resolve from $srcDir, but simply prepending
  # $srcDir to each name breaks how the names are stringified and
  # looked up from C.
  set cwd [pwd]
  cd $srcDir
  foreach x [glob $file] { # -nocomplain flag?
    lappend new_extra_files $x
  }
  cd $cwd
}
set extra_files $new_extra_files

##############################################################################
##############################################################################
##############################################################################
# Start by generating the "main.mk" makefile used for all unix systems.
#
set mainMk $srcDir/main.mk
puts "building $mainMk"
set output_file [open $mainMk w]
fconfigure $output_file -translation binary

writeln {#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
# This file is included by primary Makefile.
#

XBCC = $(BCC) $(BCCFLAGS)
XTCC = $(TCC) $(CFLAGS_INCLUDE) -I$(OBJDIR) $(TCCFLAGS)

TESTFLAGS := -quiet
}
writeln -nonewline "SRC ="
foreach s [lsort $src] {
  writeln -nonewline " \\\n  \$(SRCDIR)/$s.c"
}
writeln "\n"
writeln -nonewline "EXTRA_FILES ="
foreach s [lsort $extra_files] {
  writeln -nonewline " \\\n  \$(SRCDIR)/$s"
}
writeln "\n"
writeln -nonewline "TRANS_SRC ="
foreach s [lsort $src] {
  writeln -nonewline " \\\n  \$(OBJDIR)/${s}_.c"
}
writeln "\n"
writeln -nonewline "OBJ ="
foreach s [lsort $src] {
  writeln -nonewline " \\\n \$(OBJDIR)/$s.o"
}

writeln [string map [list \
    <<<SQLITE_OPTIONS>>> [join $SQLITE_OPTIONS " \\\n                 "] \
    <<<SHELL_OPTIONS>>> [join $SHELL_OPTIONS " \\\n                "] \
    <<<PIKCHR_OPTIONS>>> [join $PIKCHR_OPTIONS " \\\n                "] \
    <<<NEXT_LINE>>> \\] {
all:	$(OBJDIR) $(APPNAME)

install:	all
	mkdir -p $(INSTALLDIR)
	cp $(APPNAME) $(INSTALLDIR)

codecheck:	$(TRANS_SRC) $(OBJDIR)/codecheck1
	$(OBJDIR)/codecheck1 $(TRANS_SRC)

$(OBJDIR):
	-mkdir $(OBJDIR)

$(OBJDIR)/translate:	$(SRCDIR_tools)/translate.c
	$(XBCC) -o $(OBJDIR)/translate $(SRCDIR_tools)/translate.c

$(OBJDIR)/makeheaders:	$(SRCDIR_tools)/makeheaders.c
	$(XBCC) -o $(OBJDIR)/makeheaders $(SRCDIR_tools)/makeheaders.c

$(OBJDIR)/mkindex:	$(SRCDIR_tools)/mkindex.c
	$(XBCC) -o $(OBJDIR)/mkindex $(SRCDIR_tools)/mkindex.c

$(OBJDIR)/mkbuiltin:	$(SRCDIR_tools)/mkbuiltin.c
	$(XBCC) -o $(OBJDIR)/mkbuiltin $(SRCDIR_tools)/mkbuiltin.c

$(OBJDIR)/mkversion:	$(SRCDIR_tools)/mkversion.c
	$(XBCC) -o $(OBJDIR)/mkversion $(SRCDIR_tools)/mkversion.c

$(OBJDIR)/codecheck1:	$(SRCDIR_tools)/codecheck1.c
	$(XBCC) -o $(OBJDIR)/codecheck1 $(SRCDIR_tools)/codecheck1.c

# Run the test suite.
# Other flags that can be included in TESTFLAGS are:
#
#  -halt     Stop testing after the first failed test
#  -keep     Keep the temporary workspace for debugging
#  -prot     Write a detailed log of the tests to the file ./prot
#  -verbose  Include even more details in the output
#  -quiet    Hide most output from the terminal
#  -strict   Treat known bugs as failures
#
# TESTFLAGS can also include names of specific test files to limit
# the run to just those test cases.
#
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME) $(TESTFLAGS)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION $(OBJDIR)/mkversion $(OBJDIR)/phony.h
	$(OBJDIR)/mkversion $(SRCDIR)/../manifest.uuid <<<NEXT_LINE>>>
		$(SRCDIR)/../manifest <<<NEXT_LINE>>>
		$(SRCDIR)/../VERSION >$(OBJDIR)/VERSION.h

$(OBJDIR)/phony.h:
	# Force rebuild of VERSION.h every time we run "make"

# Setup the options used to compile the included SQLite library.
SQLITE_OPTIONS = <<<SQLITE_OPTIONS>>>

# Setup the options used to compile the included SQLite shell.
SHELL_OPTIONS = <<<SHELL_OPTIONS>>>

# Setup the options used to compile the included Pikchr formatter.
PIKCHR_OPTIONS = <<<PIKCHR_OPTIONS>>>

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0 or 1.
# If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system SQLite will be linked
# using -lsqlite3.
#
# Closely related is SQLITE3_ORIGIN, with the same numeric mapping plus
# a value of 2 means that we are building a client-provided sqlite3.c.
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o
SQLITE3_OBJ.1 = $(OBJDIR)/sqlite3-see.o
# SQLITE3_OBJ.2 is set by the configure process
SQLITE3_OBJ.  = $(SQLITE3_OBJ.0)
SQLITE3_OBJ   = $(SQLITE3_OBJ.$(SQLITE3_ORIGIN))

# The USE_LINENOISE variable may be undefined, set to 0, or set
# to 1. If it is set to 0, then there is no need to build or link
# the linenoise.o object.
LINENOISE_DEF.0 =
LINENOISE_DEF.1 = -DHAVE_LINENOISE=2
LINENOISE_DEF.  = $(LINENOISE_DEF.0)
LINENOISE_OBJ.0 =
LINENOISE_OBJ.1 = $(OBJDIR)/linenoise.o
LINENOISE_OBJ.  = $(LINENOISE_OBJ.0)

# The USE_SEE variable may be undefined, 0 or 1.  If undefined or 0,
# in-tree SQLite is used.  If 1, then sqlite3-see.c (not part of the
# source tree) is used and extra flags are provided to enable the
# SQLite Encryption Extension.
SQLITE3_SRC.0 = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC.1 = $(SRCDIR_extsrc)/sqlite3-see.c
# SQLITE3_SRC.2 is set by top-level configure/makefile process.
SQLITE3_SRC. = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC = $(SQLITE3_SRC.$(SQLITE3_ORIGIN))
SQLITE3_SHELL_SRC.0 = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC.1 = $(SRCDIR_extsrc)/shell-see.c
# SQLITE3_SHELL_SRC.2 comes from the configure process
SQLITE3_SHELL_SRC. = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC = $(SQLITE3_SHELL_SRC.$(SQLITE3_ORIGIN))
SEE_FLAGS.0 =
SEE_FLAGS.1 = -DSQLITE_HAS_CODEC -DSQLITE_SHELL_DBKEY_PROC=fossil_key
SEE_FLAGS. =
SEE_FLAGS = $(SEE_FLAGS.$(USE_SEE))
}]

writeln [string map [list <<<NEXT_LINE>>> \\] {
EXTRAOBJ = <<<NEXT_LINE>>>
 $(SQLITE3_OBJ.$(SQLITE3_ORIGIN)) <<<NEXT_LINE>>>
 $(LINENOISE_OBJ.$(USE_LINENOISE)) <<<NEXT_LINE>>>
 $(OBJDIR)/pikchr.o <<<NEXT_LINE>>>
 $(OBJDIR)/shell.o <<<NEXT_LINE>>>
 $(OBJDIR)/th.o <<<NEXT_LINE>>>
 $(OBJDIR)/th_lang.o <<<NEXT_LINE>>>
 $(OBJDIR)/th_tcl.o <<<NEXT_LINE>>>
 $(OBJDIR)/cson_amalgamation.o
}]

writeln {
$(APPNAME):	$(OBJDIR)/headers $(OBJDIR)/codecheck1 $(EXTRAOBJ) $(OBJ)
	$(OBJDIR)/codecheck1 $(TRANS_SRC)
	$(TCC) $(TCCFLAGS) -o $(APPNAME) $(EXTRAOBJ) $(OBJ) $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:
	# noop

clean:
	-rm -rf $(OBJDIR)/* $(APPNAME)

}

set mhargs {}
foreach s [lsort $src] {
  append mhargs "\$(OBJDIR)/${s}_.c:\$(OBJDIR)/$s.h <<<NEXT_LINE>>>"
  set extra_h($s) { }
}
foreach s [lsort $src_ext] {
  append mhargs "\$(SRCDIR_extsrc)/${s}.c:\$(OBJDIR)/$s.h <<<NEXT_LINE>>>"
  set extra_h($s) { }
}
append mhargs "\$(SRCDIR_extsrc)/sqlite3.h <<<NEXT_LINE>>>"
append mhargs "\$(SRCDIR)/th.h <<<NEXT_LINE>>>"
#append mhargs "\$(SRCDIR_extsrc)/cson_amalgamation.h <<<NEXT_LINE>>>"
append mhargs "\$(OBJDIR)/VERSION.h "
set mhargs [string map [list <<<NEXT_LINE>>> \\\n\t] $mhargs]
writeln "\$(OBJDIR)/page_index.h: \$(TRANS_SRC) \$(OBJDIR)/mkindex"
writeln "\t\$(OBJDIR)/mkindex \$(TRANS_SRC) >\$@\n"

writeln "\$(OBJDIR)/builtin_data.h: \$(OBJDIR)/mkbuiltin \$(EXTRA_FILES)"
writeln "\t\$(OBJDIR)/mkbuiltin --prefix \$(SRCDIR)/ \$(EXTRA_FILES) >\$@\n"

writeln "\$(OBJDIR)/headers:\t\$(OBJDIR)/page_index.h \$(OBJDIR)/builtin_data.h \$(OBJDIR)/makeheaders \$(OBJDIR)/VERSION.h"
writeln "\t\$(OBJDIR)/makeheaders $mhargs"
writeln "\ttouch \$(OBJDIR)/headers"
writeln "\$(OBJDIR)/headers: Makefile"
writeln "\$(OBJDIR)/json.o \$(OBJDIR)/json_artifact.o \$(OBJDIR)/json_branch.o \$(OBJDIR)/json_config.o \$(OBJDIR)/json_diff.o \$(OBJDIR)/json_dir.o \$(OBJDIR)/json_finfo.o \$(OBJDIR)/json_login.o \$(OBJDIR)/json_query.o \$(OBJDIR)/json_report.o \$(OBJDIR)/json_status.o \$(OBJDIR)/json_tag.o \$(OBJDIR)/json_timeline.o \$(OBJDIR)/json_user.o \$(OBJDIR)/json_wiki.o : \$(SRCDIR)/json_detail.h"

writeln "Makefile:"
set extra_h(dispatch) " \$(OBJDIR)/page_index.h "
set extra_h(builtin) " \$(OBJDIR)/builtin_data.h "

foreach s [lsort $src] {
  writeln "\$(OBJDIR)/${s}_.c:\t\$(SRCDIR)/$s.c \$(OBJDIR)/translate"
  writeln "\t\$(OBJDIR)/translate \$(SRCDIR)/$s.c >\$@\n"
  writeln "\$(OBJDIR)/$s.o:\t\$(OBJDIR)/${s}_.c \$(OBJDIR)/$s.h$extra_h($s)\$(SRCDIR)/config.h"
  writeln "\t\$(XTCC) -o \$(OBJDIR)/$s.o -c \$(OBJDIR)/${s}_.c\n"
  writeln "\$(OBJDIR)/$s.h:\t\$(OBJDIR)/headers\n"
}

writeln "\$(SQLITE3_OBJ):\t\$(SQLITE3_SRC)"
writeln "\t\$(XTCC) \$(SQLITE_OPTIONS) \$(SQLITE_CFLAGS) \$(SEE_FLAGS) \\"
writeln "\t\t-c \$(SQLITE3_SRC) -o \$@"

writeln "\$(OBJDIR)/shell.o:\t\$(SQLITE3_SHELL_SRC) \$(SRCDIR_extsrc)/sqlite3.h"
writeln "\t\$(XTCC) \$(SHELL_OPTIONS) \$(SHELL_CFLAGS) \$(SEE_FLAGS) \$(LINENOISE_DEF.\$(USE_LINENOISE)) -c \$(SQLITE3_SHELL_SRC) -o \$@\n"

writeln "\$(OBJDIR)/linenoise.o:\t\$(SRCDIR_extsrc)/linenoise.c \$(SRCDIR_extsrc)/linenoise.h"
writeln "\t\$(XTCC) -c \$(SRCDIR_extsrc)/linenoise.c -o \$@\n"

writeln "\$(OBJDIR)/th.o:\t\$(SRCDIR)/th.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th.c -o \$@\n"

writeln "\$(OBJDIR)/th_lang.o:\t\$(SRCDIR)/th_lang.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th_lang.c -o \$@\n"

writeln "\$(OBJDIR)/th_tcl.o:\t\$(SRCDIR)/th_tcl.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th_tcl.c -o \$@\n"

writeln [string map [list <<<NEXT_LINE>>> \\] {
$(OBJDIR)/pikchr.o:	$(SRCDIR_extsrc)/pikchr.c
	$(XTCC) $(PIKCHR_OPTIONS) -c $(SRCDIR_extsrc)/pikchr.c -o $@

$(OBJDIR)/cson_amalgamation.o: $(SRCDIR_extsrc)/cson_amalgamation.c
	$(XTCC) -c $(SRCDIR_extsrc)/cson_amalgamation.c -o $@

$(SRCDIR_extsrc)/pikchr.js: $(SRCDIR_extsrc)/pikchr.c
	$(EMCC_WRAPPER) -o $@ $(EMCC_OPT) --no-entry <<<NEXT_LINE>>>
        -sEXPORTED_RUNTIME_METHODS=cwrap,setValue,getValue,stackSave,stackRestore <<<NEXT_LINE>>>
        -sEXPORTED_FUNCTIONS=_pikchr $(SRCDIR_extsrc)/pikchr.c <<<NEXT_LINE>>>
        -sENVIRONMENT=web <<<NEXT_LINE>>>
        -sMODULARIZE <<<NEXT_LINE>>>
        -sEXPORT_NAME=initPikchrModule <<<NEXT_LINE>>>
        --minify 0
	@chmod -x $(SRCDIR_extsrc)/pikchr.wasm
wasm: $(SRCDIR_extsrc)/pikchr.js

#
# compile_commands.json support...
#
# We have to avoid applying compile_commands support to the in-tree
# tools, as those compile with BCC, which may differ from TCC.
# e.g. BCC might be gcc (which does not support -MJ ...) while TCC is
# clang (which does).
#
# What follows is more verbose than strictly necessary because we're
# limited to POSIX make syntax.
all:
compile-commands-dir.yes = $(OBJDIR)
compile-commands-dir.no =
compile-commands-dir = $(compile-commands-dir.$(MAKE_COMPILATION_DB))
compile-command-args.yes = -MJ $(TOPDIR)/$(compile-commands-dir)/$(@F:.o=.o.json)
compile-command-args.no =
TCCFLAGS += $(compile-command-args.$(MAKE_COMPILATION_DB))
compile_commands.json = $(TOPDIR)/compile_commands.json
# compile_commands.json is a concatenation of the .o.json files
# generated by the compilation process via TCCFLAGS. We have a
# potential race condition in parallel builds, where a .o.json file is
# not yet written to completion before compile_commands.json is
# processed. How to resolve that in a way compatible with POSIX make
# is unclear.
#
# This obscure sed bit ensures that the resulting JSON array does not
# have a trailing comma.
$(compile_commands.json): $(OBJ)
	@-rm -f $@
	@{ echo '['; cat $(compile-commands-dir)/*.o.json | tr '\n' ' ' | sed -e 's/, $$//'; echo ']'; } > $@
	@echo "Generated $@"
compile-commands.no:
compile-commands.yes: $(compile_commands.json)
all: compile-commands.$(MAKE_COMPILATION_DB)
clean: compile-commands-clean
compile-commands-clean:
	rm -fr $(compile_commands.json)

#
# End compile_commands.json support
#

#
# The list of all the targets that do not correspond to real files. This stops
# 'make' from getting confused when someone makes an error in a rule.
#

.PHONY: all install test clean
.PHONY: compile-commands-clean compile-commands-dir
}]

close $output_file
#
# End of the main.mk output
##############################################################################
##############################################################################
##############################################################################
# Begin win/Makefile.mingw output
#
puts "building ../win/Makefile.mingw"
set output_file [open ../win/Makefile.mingw w]
fconfigure $output_file -translation binary

writeln {#!/usr/bin/make
#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
# This is a makefile for use on Cygwin/Darwin/FreeBSD/Linux/Windows using
# MinGW or MinGW-w64.
#
# Some of the special options which can be passed to make
#   USE_WINDOWS=1    if building under a windows command prompt
#   X64=1            if using an unprefixed 64-bit mingw compiler
#

#### Select one of MinGW, MinGW-w64 (32-bit) or MinGW-w64 (64-bit) compilers.
#    By default, this is an empty string (i.e. use the native compiler).
#
PREFIX =
# PREFIX = mingw32-
# PREFIX = i686-pc-mingw32-
# PREFIX = i686-w64-mingw32-
# PREFIX = x86_64-w64-mingw32-

#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = src
SRCDIR_extsrc = extsrc
SRCDIR_tools = tools

#### The directory into which object code files should be written.
#
OBJDIR = wbld

#### C compiler for use in building executables that will run on
#    the platform that is doing the build.  This is used to compile
#    code-generator programs as part of the build process.  See TCC
#    and TCCEXE below for the C compiler for building the finished
#    binary.
#
BCCEXE = gcc

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = $(BCCEXE)

#### Enable compiling with debug symbols (much larger binary)
#
# FOSSIL_ENABLE_SYMBOLS = 1

#### Enable JSON (https://www.json.org) support using "cson"
#
# FOSSIL_ENABLE_JSON = 1

#### Enable HTTPS support via OpenSSL (links to libssl and libcrypto)
#
# FOSSIL_ENABLE_SSL = 1

#### Automatically build OpenSSL when building Fossil (causes rebuild
#    issues when building incrementally).
#
# FOSSIL_BUILD_SSL = 1

#### Enable relative paths in external diff/gdiff
#
# FOSSIL_ENABLE_EXEC_REL_PATHS = 1

#### Enable TH1 scripts in embedded documentation files
#
# FOSSIL_ENABLE_TH1_DOCS = 1

#### Enable hooks for commands and web pages via TH1
#
# FOSSIL_ENABLE_TH1_HOOKS = 1

#### Enable scripting support via Tcl/Tk
#
# FOSSIL_ENABLE_TCL = 1

#### Load Tcl using the stubs library mechanism
#
# FOSSIL_ENABLE_TCL_STUBS = 1

#### Load Tcl using the private stubs mechanism
#
# FOSSIL_ENABLE_TCL_PRIVATE_STUBS = 1

#### Use 'system' SQLite
#
# USE_SYSTEM_SQLITE = 1

#### Use POSIX memory APIs from "sys/mman.h"
#
# USE_MMAN_H = 1

#### Use the SQLite Encryption Extension
#
# USE_SEE = 1

#### Use the Tcl source directory instead of the install directory?
#    This is useful when Tcl has been compiled statically with MinGW.
#
FOSSIL_TCL_SOURCE = 1

#### Check if the workaround for the MinGW command line handling needs to
#    be enabled by default.  This check may be somewhat fragile due to the
#    use of "findstring".
#
ifndef MINGW_IS_32BIT_ONLY
ifeq (,$(findstring w64-mingw32,$(PREFIX)))
MINGW_IS_32BIT_ONLY = 1
endif
endif

#### The directories where the zlib include and library files are located.
#
ZINCDIR = $(SRCDIR)/../compat/zlib
ZLIBDIR = $(SRCDIR)/../compat/zlib

#### Make an attempt to detect if Fossil is being built for the x64 processor
#    architecture.  This check may be somewhat fragile due to "findstring".
#
ifndef X64
ifneq (,$(findstring x86_64-w64-mingw32,$(PREFIX)))
X64 = 1
endif
endif

#### Determine if the optimized assembly routines provided with zlib should be
#    used, taking into account whether zlib is actually enabled and the target
#    processor architecture.
#
ifndef X64
SSLCONFIG = mingw
ZLIBCONFIG =
ZLIBTARGETS =
else
SSLCONFIG = mingw64
ZLIBCONFIG =
ZLIBTARGETS =
endif

#### Disable creation of the OpenSSL shared libraries.  Also, disable support
#    for SSLv3 (i.e. thereby forcing the use of TLS).
#
SSLCONFIG += no-ssl3 no-weak-ssl-ciphers no-shared

#### When using zlib, make sure that OpenSSL is configured to use the zlib
#    that Fossil knows about (i.e. the one within the source tree).
#
SSLCONFIG +=  --with-zlib-lib=$(PWD)/$(ZLIBDIR) --with-zlib-include=$(PWD)/$(ZLIBDIR) zlib

#### The directories where the OpenSSL include and library files are located.
#
OPENSSLDIR = $(SRCDIR)/../compat/openssl
OPENSSLINCDIR = $(OPENSSLDIR)/include
OPENSSLLIBDIR = $(OPENSSLDIR)

#### Either the directory where the Tcl library is installed or the Tcl
#    source code directory resides (depending on the value of the macro
#    FOSSIL_TCL_SOURCE).  If this points to the Tcl install directory,
#    this directory must have "include" and "lib" sub-directories.  If
#    this points to the Tcl source code directory, this directory must
#    have "generic" and "win" sub-directories.  The recommended usage
#    here is to use the Sysinternals junction tool to create a hard
#    link between a "tcl-8.x" sub-directory of the Fossil source code
#    directory and the target Tcl directory.  This removes the need to
#    hard-code the necessary paths in this Makefile.
#
TCLDIR = $(SRCDIR)/../compat/tcl-8.6

#### The Tcl source code directory.  This defaults to the same value as
#    TCLDIR macro (above), which may not be correct.  This value will
#    only be used if the FOSSIL_TCL_SOURCE macro is defined.
#
TCLSRCDIR = $(TCLDIR)

#### The Tcl include and library directories.  These values will only be
#    used if the FOSSIL_TCL_SOURCE macro is not defined.
#
TCLINCDIR = $(TCLDIR)/include
TCLLIBDIR = $(TCLDIR)/lib

#### Tcl: Which Tcl library do we want to use (8.4, 8.5, 8.6, etc)?
#
ifdef FOSSIL_ENABLE_TCL_STUBS
ifndef FOSSIL_ENABLE_TCL_PRIVATE_STUBS
LIBTCL = -ltclstub86
endif
TCLTARGET = libtclstub86.a
else
LIBTCL = -ltcl86
TCLTARGET = binaries
endif

#### C compiler for use in building executables that will run on the
#    target platform.  This is usually the same as BCCEXE, unless you
#    are cross-compiling.  This C compiler builds the finished binary
#    for fossil.  See BCC and BCCEXE above for the C compiler for
#    building intermediate code-generator tools.
#
TCCEXE = gcc

#### C compiler and options for use in building executables that will
#    run on the target platform.  This is usually the almost the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
TCC = $(PREFIX)$(TCCEXE) -Wall -Wdeclaration-after-statement
TCC += -I$(SRCDIR_extsrc)

#### Add the necessary command line options to build with debugging
#    symbols, if enabled.
#
ifdef FOSSIL_ENABLE_SYMBOLS
TCC += -g
else
TCC += -Os
endif

TCC += -L$(ZLIBDIR) -I$(ZINCDIR)

#### Compile resources for use in building executables that will run
#    on the target platform.
#
RCC = $(PREFIX)windres -I$(SRCDIR) -I$(ZINCDIR)
RCC += -I$(SRCDIR_extsrc)

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -L$(OPENSSLLIBDIR) -I$(OPENSSLINCDIR)
RCC += -I$(OPENSSLINCDIR)
endif

# With Tcl support
ifdef FOSSIL_ENABLE_TCL
ifdef FOSSIL_TCL_SOURCE
TCC += -L$(TCLSRCDIR)/win -I$(TCLSRCDIR)/generic -I$(TCLSRCDIR)/win
RCC += -I$(TCLSRCDIR)/generic -I$(TCLSRCDIR)/win
else
TCC += -L$(TCLLIBDIR) -I$(TCLINCDIR)
RCC += -I$(TCLINCDIR)
endif
endif

# With MinGW command line handling workaround
ifdef MINGW_IS_32BIT_ONLY
TCC += -DBROKEN_MINGW_CMDLINE=1
RCC += -DBROKEN_MINGW_CMDLINE=1
endif

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -DFOSSIL_ENABLE_SSL=1
RCC += -DFOSSIL_ENABLE_SSL=1
endif

# With relative paths in external diff/gdiff
ifdef FOSSIL_ENABLE_EXEC_REL_PATHS
TCC += -DFOSSIL_ENABLE_EXEC_REL_PATHS=1
RCC += -DFOSSIL_ENABLE_EXEC_REL_PATHS=1
endif

# With TH1 embedded docs support
ifdef FOSSIL_ENABLE_TH1_DOCS
TCC += -DFOSSIL_ENABLE_TH1_DOCS=1
RCC += -DFOSSIL_ENABLE_TH1_DOCS=1
endif

# With TH1 hook support
ifdef FOSSIL_ENABLE_TH1_HOOKS
TCC += -DFOSSIL_ENABLE_TH1_HOOKS=1
RCC += -DFOSSIL_ENABLE_TH1_HOOKS=1
endif

# With Tcl support
ifdef FOSSIL_ENABLE_TCL
TCC += -DFOSSIL_ENABLE_TCL=1
RCC += -DFOSSIL_ENABLE_TCL=1
# Either statically linked or via stubs
ifdef FOSSIL_ENABLE_TCL_STUBS
TCC += -DFOSSIL_ENABLE_TCL_STUBS=1 -DUSE_TCL_STUBS
RCC += -DFOSSIL_ENABLE_TCL_STUBS=1 -DUSE_TCL_STUBS
ifdef FOSSIL_ENABLE_TCL_PRIVATE_STUBS
TCC += -DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
RCC += -DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
endif
else
TCC += -DSTATIC_BUILD
RCC += -DSTATIC_BUILD
endif
endif

# With JSON support
ifdef FOSSIL_ENABLE_JSON
TCC += -DFOSSIL_ENABLE_JSON=1
RCC += -DFOSSIL_ENABLE_JSON=1
endif

# With "sys/mman.h" support
ifdef USE_MMAN_H
TCC += -DUSE_MMAN_H=1
RCC += -DUSE_MMAN_H=1
endif

# With SQLite Encryption Extension support
ifdef USE_SEE
TCC += -DUSE_SEE=1
RCC += -DUSE_SEE=1
endif

#### The option -static has no effect on MinGW(-w64), only dynamic
#    executables can be built when linking with MSVCRT.  OpenSSL
#    (optional) and zlib (required) however are always linked in
#    statically.  Therefore, the FOSSIL_DYNAMIC_BUILD option does
#    not really apply to MinGW (i.e. since ALL external libraries
#    are NOT linked dynamically).
#
# LIB = -static

#### MinGW: If available, use the Unicode capable runtime startup code.
#
ifndef MINGW_IS_32BIT_ONLY
LIB += -municode
endif

#### SQLite: If enabled, use the system SQLite library.
#
ifdef USE_SYSTEM_SQLITE
LIB += -lsqlite3
endif

#### OpenSSL: Add the necessary libraries required, if enabled.
#
ifdef FOSSIL_ENABLE_SSL
LIB += -lssl -lcrypto -lgdi32 -lcrypt32
endif

#### Tcl: Add the necessary libraries required, if enabled.
#
ifdef FOSSIL_ENABLE_TCL
LIB += $(LIBTCL)
endif

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other mandatory dependencies.
#
LIB += -lmingwex

#### zlib is required.
#
LIB += -lz

#### These libraries MUST appear in the same order as they do for Tcl
#    or linking with it will not work (exact reason unknown).
#
ifdef FOSSIL_ENABLE_TCL
ifdef FOSSIL_ENABLE_TCL_STUBS
LIB += -lkernel32 -lws2_32
else
LIB += -lnetapi32 -lkernel32 -luser32 -ladvapi32 -lws2_32
endif
else
LIB += -lkernel32 -lws2_32
endif

#### Library required for DNS lookups.
#
LIB += -ldnsapi

#### Tcl shell for use in running the fossil test suite.  This is only
#    used for testing.
#
TCLSH = tclsh

#### Nullsoft installer MakeNSIS location
#
MAKENSIS = "$(PROGRAMFILES)\NSIS\MakeNSIS.exe"

#### Inno Setup executable location
#
INNOSETUP = "$(PROGRAMFILES)\Inno Setup 5\ISCC.exe"

#### Include a configuration file that can override any one of these settings.
#
-include config.w32

# STOP HERE
# You should not need to change anything below this line
#--------------------------------------------------------
XBCC = $(BCC) $(CFLAGS)
XTCC = $(TCC) $(CFLAGS) -I. -I$(SRCDIR)
}
writeln -nonewline "SRC ="
foreach s [lsort $src] {
  writeln -nonewline " \\\n  \$(SRCDIR)/$s.c"
}
writeln "\n"
writeln -nonewline "EXTRA_FILES ="
foreach s [lsort $extra_files] {
  writeln -nonewline " \\\n  \$(SRCDIR)/$s"
}
writeln "\n"
writeln -nonewline "TRANS_SRC ="
foreach s [lsort $src] {
  writeln -nonewline " \\\n  \$(OBJDIR)/${s}_.c"
}
writeln "\n"
writeln -nonewline "OBJ ="
foreach s [lsort $src] {
  writeln -nonewline " \\\n \$(OBJDIR)/$s.o"
}
writeln "\n"
writeln "APPNAME    = ${name}.exe"
writeln "APPTARGETS ="
writeln {
#### If the USE_WINDOWS variable exists, it is assumed that we are building
#    inside of a Windows-style shell; otherwise, it is assumed that we are
#    building inside of a Unix-style shell.  Note that the "move" command is
#    broken when attempting to use it from the Windows shell via MinGW make
#    because the SHELL variable is only used for certain commands that are
#    recognized internally by make.
#
ifdef USE_WINDOWS
TRANSLATE   = $(subst /,\,$(OBJDIR)/translate.exe)
MAKEHEADERS = $(subst /,\,$(OBJDIR)/makeheaders.exe)
MKINDEX     = $(subst /,\,$(OBJDIR)/mkindex.exe)
MKBUILTIN   = $(subst /,\,$(OBJDIR)/mkbuiltin.exe)
MKVERSION   = $(subst /,\,$(OBJDIR)/mkversion.exe)
CODECHECK1  = $(subst /,\,$(OBJDIR)/codecheck1.exe)
CAT         = type
CP          = copy
GREP        = find
MV          = copy
RM          = del /Q
MKDIR       = -mkdir
RMDIR       = rmdir /S /Q
else
TRANSLATE   = $(OBJDIR)/translate.exe
MAKEHEADERS = $(OBJDIR)/makeheaders.exe
MKINDEX     = $(OBJDIR)/mkindex.exe
MKBUILTIN   = $(OBJDIR)/mkbuiltin.exe
MKVERSION   = $(OBJDIR)/mkversion.exe
CODECHECK1  = $(OBJDIR)/codecheck1.exe
CAT         = cat
CP          = cp
GREP        = grep
MV          = mv
RM          = rm -f
MKDIR       = -mkdir -p
RMDIR       = rm -rf
endif}

writeln {
all:	$(OBJDIR) $(APPNAME)

$(OBJDIR)/fossil.o:	$(SRCDIR)/../win/fossil.rc $(OBJDIR)/VERSION.h
ifdef USE_WINDOWS
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.rc) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.ico) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.exe.manifest) $(subst /,\,$(OBJDIR))
else
	$(CP) $(SRCDIR)/../win/fossil.rc $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.ico $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.exe.manifest $(OBJDIR)
endif
	$(RCC) $(OBJDIR)/fossil.rc -o $(OBJDIR)/fossil.o

install:	$(OBJDIR) $(APPNAME)
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(INSTALLDIR))
	$(CP) $(subst /,\,$(APPNAME)) $(subst /,\,$(INSTALLDIR))
else
	$(MKDIR) $(INSTALLDIR)
	$(CP) $(APPNAME) $(INSTALLDIR)
endif

$(OBJDIR):
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(OBJDIR))
else
	$(MKDIR) $(OBJDIR)
endif

$(TRANSLATE):	$(SRCDIR_tools)/translate.c
	$(XBCC) -o $@ $(SRCDIR_tools)/translate.c

$(MAKEHEADERS):	$(SRCDIR_tools)/makeheaders.c
	$(XBCC) -o $@ $(SRCDIR_tools)/makeheaders.c

$(MKINDEX):	$(SRCDIR_tools)/mkindex.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkindex.c

$(MKBUILTIN):	$(SRCDIR_tools)/mkbuiltin.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkbuiltin.c

$(MKVERSION): $(SRCDIR_tools)/mkversion.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkversion.c

$(CODECHECK1):	$(SRCDIR_tools)/codecheck1.c
	$(XBCC) -o $@ $(SRCDIR_tools)/codecheck1.c

# WARNING. DANGER. Running the test suite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(MKVERSION) $(OBJDIR)/phony.h
	$(MKVERSION) $(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION >$@

$(OBJDIR)/phony.h:
	# Force rebuild of VERSION.h every time "make" is run

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0 or 1.
# If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system SQLite will be linked
# using -lsqlite3.
#
# Closely related is SQLITE3_ORIGIN, with the same 0/1 mapping,
# plus a value of 2 means that we are building a client-provided
# sqlite3.c.
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o
SQLITE3_OBJ.1 = $(OBJDIR)/sqlite3-see.o
# SQLITE3_OBJ.2 is set by the configure process
SQLITE3_OBJ.  = $(SQLITE3_OBJ.0)
SQLITE3_OBJ   = $(SQLITE3_OBJ.$(SQLITE3_ORIGIN))

# The USE_SEE variable may be undefined, 0 or 1.  If undefined or 0,
# in-tree SQLite is used.  If 1, then sqlite3-see.c (not part of the
# source tree) is used and extra flags are provided to enable the
# SQLite Encryption Extension.
SQLITE3_SRC.0 = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC.1 = $(SRCDIR_extsrc)/sqlite3-see.c
# SQLITE3_SRC.2 is set by top-level configure/makefile process.
SQLITE3_SRC. = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC = $(SQLITE3_SRC.$(SQLITE3_ORIGIN))
SQLITE3_SHELL_SRC.0 = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC.1 = $(SRCDIR_extsrc)/shell-see.c
# SQLITE3_SHELL_SRC.2 comes from the configure process
SQLITE3_SHELL_SRC. = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC = $(SQLITE3_SHELL_SRC.$(SQLITE3_ORIGIN))
SEE_FLAGS.0 =
SEE_FLAGS.1 = -DSQLITE_HAS_CODEC -DSQLITE_SHELL_DBKEY_PROC=fossil_key
SEE_FLAGS. =
SEE_FLAGS = $(SEE_FLAGS.$(USE_SEE))
}

writeln [string map [list <<<NEXT_LINE>>> \\] {
EXTRAOBJ = <<<NEXT_LINE>>>
 $(SQLITE3_OBJ.$(SQLITE3_ORIGIN)) <<<NEXT_LINE>>>
 $(OBJDIR)/pikchr.o <<<NEXT_LINE>>>
 $(OBJDIR)/shell.o <<<NEXT_LINE>>>
 $(OBJDIR)/th.o <<<NEXT_LINE>>>
 $(OBJDIR)/th_lang.o <<<NEXT_LINE>>>
 $(OBJDIR)/th_tcl.o <<<NEXT_LINE>>>
 $(OBJDIR)/cson_amalgamation.o
}]

writeln {
zlib:	$(ZLIBTARGETS)
	$(MAKE) -C $(ZLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) $(ZLIBCONFIG) -f win32/Makefile.gcc libz.a

clean-zlib:
	$(MAKE) -C $(ZLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) -f win32/Makefile.gcc clean

BLDTARGETS = zlib

openssl:	$(BLDTARGETS)
	cd $(OPENSSLLIBDIR);./Configure --cross-compile-prefix=$(PREFIX) $(SSLCONFIG)
	sed -i -e 's/^PERL=C:\\.*$$/PERL=perl.exe/i' $(OPENSSLLIBDIR)/Makefile
	$(MAKE) -C $(OPENSSLLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) build_libs

clean-openssl:
	$(MAKE) -C $(OPENSSLLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) clean

tcl:
	cd $(TCLSRCDIR)/win;./configure
	$(MAKE) -C $(TCLSRCDIR)/win PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) $(TCLTARGET)

clean-tcl:
	$(MAKE) -C $(TCLSRCDIR)/win PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) distclean

APPTARGETS += $(BLDTARGETS)

ifdef FOSSIL_BUILD_SSL
APPTARGETS += openssl
endif

$(APPNAME):	$(APPTARGETS) $(OBJDIR)/headers $(CODECHECK1) $(EXTRAOBJ) $(OBJ) $(OBJDIR)/fossil.o
	$(CODECHECK1) $(TRANS_SRC)
	$(TCC) -o $@ $(EXTRAOBJ) $(OBJ) $(OBJDIR)/fossil.o $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:
	# noop

clean:
ifdef USE_WINDOWS
	$(RM) $(subst /,\,$(APPNAME))
	$(RMDIR) $(subst /,\,$(OBJDIR))
else
	$(RM) $(APPNAME)
	$(RMDIR) $(OBJDIR)
endif

setup: $(OBJDIR) $(APPNAME)
	$(MAKENSIS) ./setup/fossil.nsi

innosetup: $(OBJDIR) $(APPNAME)
	$(INNOSETUP) ./setup/fossil.iss -DAppVersion=$(shell $(CAT) ./VERSION)
}

set mhargs {}
foreach s [lsort $src] {
  if {[string length $mhargs] > 0} {append mhargs " <<<NEXT_LINE>>>"}
  append mhargs "\$(OBJDIR)/${s}_.c:\$(OBJDIR)/$s.h"
  set extra_h($s) { }
}
foreach s [lsort $src_ext] {
  if {[string length $mhargs] > 0} {append mhargs " <<<NEXT_LINE>>>"}
  append mhargs "\$(SRCDIR_extsrc)/${s}.c:\$(OBJDIR)/$s.h"
  set extra_h($s) { }
}
append mhargs " <<<NEXT_LINE>>>\$(SRCDIR_extsrc)/sqlite3.h"
append mhargs " <<<NEXT_LINE>>>\$(SRCDIR)/th.h"
append mhargs " <<<NEXT_LINE>>>\$(OBJDIR)/VERSION.h"
set mhargs [string map [list <<<NEXT_LINE>>> \\\n\t] $mhargs]
writeln "\$(OBJDIR)/page_index.h: \$(TRANS_SRC) \$(MKINDEX)"
writeln "\t\$(MKINDEX) \$(TRANS_SRC) >\$@\n"

writeln "\$(OBJDIR)/builtin_data.h:\t\$(MKBUILTIN) \$(EXTRA_FILES)"
writeln "\t\$(MKBUILTIN) --prefix \$(SRCDIR)/ \$(EXTRA_FILES) >\$@\n"

writeln "\$(OBJDIR)/headers:\t\$(OBJDIR)/page_index.h \$(OBJDIR)/builtin_data.h \$(MAKEHEADERS) \$(OBJDIR)/VERSION.h"
writeln "\t\$(MAKEHEADERS) $mhargs"
writeln "\techo Done >\$(OBJDIR)/headers\n"
writeln "\$(OBJDIR)/headers: Makefile\n"
writeln "Makefile:\n"
set extra_h(main) " \$(OBJDIR)/page_index.h "
set extra_h(builtin) " \$(OBJDIR)/builtin_data.h "

foreach s [lsort $src] {
  writeln "\$(OBJDIR)/${s}_.c:\t\$(SRCDIR)/$s.c \$(TRANSLATE)"
  writeln "\t\$(TRANSLATE) \$(SRCDIR)/$s.c >\$@\n"
  writeln "\$(OBJDIR)/$s.o:\t\$(OBJDIR)/${s}_.c \$(OBJDIR)/$s.h$extra_h($s)\$(SRCDIR)/config.h"
  writeln "\t\$(XTCC) -o \$(OBJDIR)/$s.o -c \$(OBJDIR)/${s}_.c\n"
  writeln "\$(OBJDIR)/${s}.h:\t\$(OBJDIR)/headers\n"
}

writeln {MINGW_OPTIONS = -D_HAVE__MINGW_H
}

set SQLITE_WIN32_OPTIONS $SQLITE_OPTIONS
lappend SQLITE_WIN32_OPTIONS -DSQLITE_WIN32_NO_ANSI

set MINGW_SQLITE_OPTIONS $SQLITE_WIN32_OPTIONS
lappend MINGW_SQLITE_OPTIONS {$(MINGW_OPTIONS)}
lappend MINGW_SQLITE_OPTIONS -DSQLITE_USE_MALLOC_H
lappend MINGW_SQLITE_OPTIONS -DSQLITE_USE_MSIZE

set MINGW_PIKCHR_OPTIONS $PIKCHR_OPTIONS

set j " \\\n                 "
writeln "SQLITE_OPTIONS = [join $MINGW_SQLITE_OPTIONS $j]\n"
writeln "SHELL_OPTIONS = [join $SHELL_WIN32_OPTIONS $j]\n"
writeln "PIKCHR_OPTIONS = [join $MINGW_PIKCHR_OPTIONS $j]\n"

writeln "\$(SQLITE3_OBJ):\t\$(SQLITE3_SRC) \$(SRCDIR)/../win/Makefile.mingw"
writeln "\t\$(XTCC) \$(SQLITE_OPTIONS) \$(SQLITE_CFLAGS) \$(SEE_FLAGS) \\"
writeln "\t\t-c \$(SQLITE3_SRC) -o \$@\n"

writeln "\$(OBJDIR)/cson_amalgamation.o:\t\$(SRCDIR_extsrc)/cson_amalgamation.c"
writeln "\t\$(XTCC) -c \$(SRCDIR_extsrc)/cson_amalgamation.c -o \$@\n"
writeln "\$(OBJDIR)/json.o \$(OBJDIR)/json_artifact.o \$(OBJDIR)/json_branch.o \$(OBJDIR)/json_config.o \$(OBJDIR)/json_diff.o \$(OBJDIR)/json_dir.o \$(OBJDIR)/jsos_finfo.o \$(OBJDIR)/json_login.o \$(OBJDIR)/json_query.o \$(OBJDIR)/json_report.o \$(OBJDIR)/json_status.o \$(OBJDIR)/json_tag.o \$(OBJDIR)/json_timeline.o \$(OBJDIR)/json_user.o \$(OBJDIR)/json_wiki.o : \$(SRCDIR)/json_detail.h\n"

writeln "\$(OBJDIR)/shell.o:\t\$(SQLITE3_SHELL_SRC) \$(SRCDIR_extsrc)/sqlite3.h \$(SRCDIR)/../win/Makefile.mingw"
writeln "\t\$(XTCC) \$(SHELL_OPTIONS) \$(SHELL_CFLAGS) \$(SEE_FLAGS) -c \$(SQLITE3_SHELL_SRC) -o \$@\n"

writeln "\$(OBJDIR)/th.o:\t\$(SRCDIR)/th.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th.c -o \$@\n"

writeln "\$(OBJDIR)/th_lang.o:\t\$(SRCDIR)/th_lang.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th_lang.c -o \$@\n"

writeln "\$(OBJDIR)/th_tcl.o:\t\$(SRCDIR)/th_tcl.c"
writeln "\t\$(XTCC) -c \$(SRCDIR)/th_tcl.c -o \$@\n"

writeln "\$(OBJDIR)/pikchr.o:\t\$(SRCDIR_extsrc)/pikchr.c"
writeln "\t\$(XTCC) \$(PIKCHR_OPTIONS) -c \$(SRCDIR_extsrc)/pikchr.c -o \$@\n"

close $output_file
#
# End of the win/Makefile.mingw output
##############################################################################
##############################################################################
##############################################################################
# Begin win/Makefile.dmc output
#
puts "building ../win/Makefile.dmc"
set output_file [open ../win/Makefile.dmc w]
fconfigure $output_file -translation binary

writeln {#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
B      = ..
SRCDIR = $B\src
SRCDIR_extsrc = $B\extsrc
SRCDIR_tools = $B\tools
OBJDIR = .
O      = .obj
E      = .exe


# Maybe DMDIR, SSL or INCL needs adjustment
DMDIR  = c:\DM
INCL   = -I. -I$(SRCDIR) -I$(SRCDIR_extsrc) -I$B\win\include -I$(DMDIR)\extra\include

#SSL   =  -DFOSSIL_ENABLE_SSL=1
SSL    =

CFLAGS = -o
BCC    = $(DMDIR)\bin\dmc $(CFLAGS)
TCC    = $(DMDIR)\bin\dmc $(CFLAGS) $(DMCDEF) $(SSL) $(INCL)
LIBS   = $(DMDIR)\extra\lib\ zlib wsock32 advapi32 dnsapi
}
writeln "SQLITE_OPTIONS = [join $SQLITE_OPTIONS { }]\n"
writeln "SHELL_OPTIONS = [join $SHELL_WIN32_OPTIONS { }]\n"
writeln "PIKCHR_OPTIONS = [join $PIKCHR_OPTIONS { }]\n"
writeln -nonewline "SRC   ="
foreach s [lsort $src] {
  writeln -nonewline " ${s}_.c"
}
writeln "\n"
writeln -nonewline "OBJ   = "
foreach s [lsort $src] {
  writeln -nonewline "\$(OBJDIR)\\$s\$O "
}
writeln "\$(OBJDIR)\\shell\$O \$(OBJDIR)\\sqlite3\$O \$(OBJDIR)\\th\$O \$(OBJDIR)\\th_lang\$O"
writeln {

RC=$(DMDIR)\bin\rcc
RCFLAGS=-32 -w1 -I$(SRCDIR) /D__DMC__

APPNAME = $(OBJDIR)\fossil$(E)

all: $(APPNAME)

$(APPNAME) : translate$E mkindex$E codecheck1$E headers  $(OBJ) $(OBJDIR)\link
	cd $(OBJDIR)
	codecheck1$E $(SRC)
	$(DMDIR)\bin\link @link

$(OBJDIR)\fossil.res:	$B\win\fossil.rc
	$(RC) $(RCFLAGS) -o$@ $**

$(OBJDIR)\link: $B\win\Makefile.dmc $(OBJDIR)\fossil.res}
writeln -nonewline "\t+echo "
foreach s [lsort $src] {
  writeln -nonewline "$s "
}
writeln "shell sqlite3 th th_lang > \$@"
writeln "\t+echo fossil >> \$@"
writeln "\t+echo fossil >> \$@"
writeln "\t+echo \$(LIBS) >> \$@"
writeln "\t+echo. >> \$@"
writeln "\t+echo fossil >> \$@"

writeln {
translate$E: $(SRCDIR_tools)\translate.c
	$(BCC) -o$@ $**

makeheaders$E: $(SRCDIR_tools)\makeheaders.c
	$(BCC) -o$@ $**

mkindex$E: $(SRCDIR_tools)\mkindex.c
	$(BCC) -o$@ $**

mkbuiltin$E: $(SRCDIR_tools)\mkbuiltin.c
	$(BCC) -o$@ $**

mkversion$E: $(SRCDIR_tools)\mkversion.c
	$(BCC) -o$@ $**

codecheck1$E: $(SRCDIR_tools)\codecheck1.c
	$(BCC) -o$@ $**

$(OBJDIR)\shell$O : $(SRCDIR_extsrc)\shell.c
	$(TCC) -o$@ -c $(SHELL_OPTIONS) $(SQLITE_OPTIONS) $(SHELL_CFLAGS) $**

$(OBJDIR)\sqlite3$O : $(SRCDIR_extsrc)\sqlite3.c
	$(TCC) -o$@ -c $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $**

$(OBJDIR)\th$O : $(SRCDIR)\th.c
	$(TCC) -o$@ -c $**

$(OBJDIR)\th_lang$O : $(SRCDIR)\th_lang.c
	$(TCC) -o$@ -c $**

$(OBJDIR)\cson_amalgamation.h : $(SRCDIR_extsrc)\cson_amalgamation.h
	cp $@ $@

VERSION.h : mkversion$E $B\manifest.uuid $B\manifest $B\VERSION
	+$** > $@

page_index.h: mkindex$E $(SRC)
	+$** > $@

builtin_data.h:	mkbuiltin$E $(EXTRA_FILES)
	mkbuiltin$E --prefix $(SRCDIR)/ $(EXTRA_FILES) > $@

clean:
	-del $(OBJDIR)\*.obj
	-del *.obj *_.c *.h *.map

realclean:
	-del $(APPNAME) translate$E mkindex$E makeheaders$E mkversion$E codecheck1$E mkbuiltin$E

$(OBJDIR)\json$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_artifact$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_branch$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_config$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_diff$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_dir$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_finfo$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_login$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_query$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_report$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_status$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_tag$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_timeline$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_user$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_wiki$O : $(SRCDIR)\json_detail.h

}
foreach s [lsort $src] {
  writeln "\$(OBJDIR)\\$s\$O : ${s}_.c ${s}.h"
  writeln "\t\$(TCC) -o\$@ -c ${s}_.c\n"
  writeln "${s}_.c : \$(SRCDIR)\\$s.c"
  writeln "\t+translate\$E \$** > \$@\n"
}

writeln -nonewline "headers: makeheaders\$E page_index.h builtin_data.h VERSION.h\n\t +makeheaders\$E "
foreach s [lsort $src] {
  writeln -nonewline "${s}_.c:$s.h "
}
foreach s [lsort $src_ext] {
  writeln -nonewline "\$(SRCDIR_extsrc)\\${s}.c:$s.h "
}
writeln "\$(SRCDIR_extsrc)\\sqlite3.h \$(SRCDIR)\\th.h VERSION.h \$(SRCDIR_extsrc)\\cson_amalgamation.h"
writeln "\t@copy /Y nul: headers"

close $output_file
#
# End of the win/Makefile.dmc output
##############################################################################
##############################################################################
##############################################################################
# Begin win/Makefile.msc output
#
puts "building ../win/Makefile.msc"
set output_file [open ../win/Makefile.msc w]
fconfigure $output_file -translation binary

writeln {#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
B       = ..
SRCDIR  = $(B)\src
SRCDIR_extsrc = $(B)\extsrc
SRCDIR_tools = $(B)\tools
T       = .
OBJDIR  = $(T)
OX      = $(OBJDIR)
O       = .obj
E       = .exe
P       = .pdb
DBGOPTS = /Od

INSTALLDIR = .
!ifdef DESTDIR
INSTALLDIR = $(DESTDIR)\$(INSTALLDIR)
!endif

# When building out of source, this Makefile needs to know the path to the base
# top-level directory for this project. Pass it on NMAKE command line via make
# variable B:
#   NMAKE /f "path\to\this\Makefile" B="path/to/fossil/root"
#
# NOTE: Make sure B path has no trailing backslash, UNIX-style path is OK too.
#
!if !exist("$(B)\.fossil-settings")
!error Please specify path to project base directory: B="path/to/fossil"
!endif

# Perl is only necessary if OpenSSL support is enabled and it is built from
# source code.  The PERLDIR environment variable, if it exists, should point
# to the directory containing the main Perl executable specified here (i.e.
# "perl.exe").
PERL    = perl.exe

# Enable use of available compiler optimizations?
!ifndef OPTIMIZATIONS
OPTIMIZATIONS = 2
!endif

# Enable debugging symbols?
!ifndef DEBUG
DEBUG = 0
!endif
!ifdef FOSSIL_DEBUG
DEBUG = 1
!endif

# Build the OpenSSL libraries?
!ifndef FOSSIL_BUILD_SSL
FOSSIL_BUILD_SSL = 0
!endif

# Build the included zlib library?
!ifndef FOSSIL_BUILD_ZLIB
FOSSIL_BUILD_ZLIB = 1
!endif

# Link everything except SQLite dynamically?
!ifndef FOSSIL_DYNAMIC_BUILD
FOSSIL_DYNAMIC_BUILD = 0
!endif

# Enable relative paths in external diff/gdiff?
!ifndef FOSSIL_ENABLE_EXEC_REL_PATHS
FOSSIL_ENABLE_EXEC_REL_PATHS = 0
!endif

# Enable the JSON API?
!ifndef FOSSIL_ENABLE_JSON
FOSSIL_ENABLE_JSON = 0
!endif

# Enable OpenSSL support?
!ifndef FOSSIL_ENABLE_SSL
FOSSIL_ENABLE_SSL = 0
!endif

# Enable the Tcl integration subsystem?
!ifndef FOSSIL_ENABLE_TCL
FOSSIL_ENABLE_TCL = 0
!endif

# Enable TH1 scripts in embedded documentation files?
!ifndef FOSSIL_ENABLE_TH1_DOCS
FOSSIL_ENABLE_TH1_DOCS = 0
!endif

# Enable TH1 hooks for commands and web pages?
!ifndef FOSSIL_ENABLE_TH1_HOOKS
FOSSIL_ENABLE_TH1_HOOKS = 0
!endif

# Enable support for Windows XP with Visual Studio 201x?
!ifndef FOSSIL_ENABLE_WINXP
FOSSIL_ENABLE_WINXP = 0
!endif

# Enable support for the SQLite Encryption Extension?
!ifndef USE_SEE
USE_SEE = 0
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
SSLDIR    = $(B)\compat\openssl
SSLINCDIR = $(SSLDIR)\include
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLLIBDIR = $(SSLDIR)
!else
SSLLIBDIR = $(SSLDIR)
!endif
SSLLIB    = libssl.lib libcrypto.lib user32.lib gdi32.lib crypt32.lib
!if "$(PLATFORM)"=="amd64" || "$(PLATFORM)"=="x64"
!message Using 'x64' platform for OpenSSL...
SSLCONFIG = VC-WIN64A no-asm no-ssl3 no-weak-ssl-ciphers
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLCONFIG = $(SSLCONFIG) shared
!else
SSLCONFIG = $(SSLCONFIG) no-shared
!endif
!elseif "$(PLATFORM)"=="ia64"
!message Using 'ia64' platform for OpenSSL...
SSLCONFIG = VC-WIN64I no-asm no-ssl3 no-weak-ssl-ciphers
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLCONFIG = $(SSLCONFIG) shared
!else
SSLCONFIG = $(SSLCONFIG) no-shared
!endif
!else
!message Assuming 'x86' platform for OpenSSL...
SSLCONFIG = VC-WIN32 no-asm no-ssl3 no-weak-ssl-ciphers
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLCONFIG = $(SSLCONFIG) shared
!else
SSLCONFIG = $(SSLCONFIG) no-shared
!endif
!endif
!endif

!if $(FOSSIL_ENABLE_TCL)!=0
TCLDIR    = $(B)\compat\tcl-8.6
TCLSRCDIR = $(TCLDIR)
TCLINCDIR = $(TCLSRCDIR)\generic
!endif

# zlib options
ZINCDIR   = $(B)\compat\zlib
ZLIBDIR   = $(B)\compat\zlib

!if $(FOSSIL_DYNAMIC_BUILD)!=0
ZLIB      = zdll.lib
!else
ZLIB      = zlib.lib
!endif

INCL      = /I. /I"$(OX)" /I"$(SRCDIR)" /I"$(SRCDIR_extsrc)" /I"$(B)\win\include"

INCL      = $(INCL) /I"$(ZINCDIR)"

!if $(FOSSIL_ENABLE_SSL)!=0
INCL      = $(INCL) /I"$(SSLINCDIR)"
!endif

!if $(FOSSIL_ENABLE_TCL)!=0
INCL      = $(INCL) /I"$(TCLINCDIR)"
!endif

CFLAGS    = /nologo /W2 /WX /utf-8
LDFLAGS   =

CFLAGS    = $(CFLAGS) /D_CRT_SECURE_NO_DEPRECATE /D_CRT_SECURE_NO_WARNINGS
CFLAGS    = $(CFLAGS) /D_CRT_NONSTDC_NO_DEPRECATE /D_CRT_NONSTDC_NO_WARNINGS

!if $(FOSSIL_DYNAMIC_BUILD)!=0
LDFLAGS   = $(LDFLAGS) /MANIFEST
!else
LDFLAGS   = $(LDFLAGS) /NODEFAULTLIB:msvcrt /MANIFEST:NO
!endif

!if $(FOSSIL_ENABLE_WINXP)!=0
XPCFLAGS  = $(XPCFLAGS) /D_WIN32_WINNT=0x0501 /D_USING_V110_SDK71_=1
CFLAGS    = $(CFLAGS) $(XPCFLAGS)
#
# NOTE: For regular builds, /OSVERSION defaults to the /SUBSYSTEM version and
# explicit initialization is redundant, but is required for post-built edits.
#
!if "$(PLATFORM)"=="amd64" || "$(PLATFORM)"=="x64"
XPLDFLAGS = $(XPLDFLAGS) /OSVERSION:5.02 /SUBSYSTEM:CONSOLE,5.02
!else
XPLDFLAGS = $(XPLDFLAGS) /OSVERSION:5.01 /SUBSYSTEM:CONSOLE,5.01
!endif
LDFLAGS   = $(LDFLAGS) $(XPLDFLAGS)
#
# NOTE: Only XPCFLAGS is forwarded to the OpenSSL configuration, and XPLDFLAGS
# is applied in a separate post-build step, see below for more information.
#
!if $(FOSSIL_ENABLE_SSL)!=0
SSLCONFIG = $(SSLCONFIG) $(XPCFLAGS)
!endif
!endif

!if $(FOSSIL_DYNAMIC_BUILD)!=0
!if $(DEBUG)!=0
CRTFLAGS = /MDd
!else
CRTFLAGS = /MD
!endif
!else
!if $(DEBUG)!=0
CRTFLAGS = /MTd
!else
CRTFLAGS = /MT
!endif
!endif

!if $(OPTIMIZATIONS)>3
RELOPTS = /Os
!elseif $(OPTIMIZATIONS)>2
RELOPTS = /Ox
!elseif $(OPTIMIZATIONS)>1
RELOPTS = /O2
!elseif $(OPTIMIZATIONS)>0
RELOPTS = /O1
!else
RELOPTS =
!endif

!if $(DEBUG)!=0
CFLAGS    = $(CFLAGS) /Zi $(CRTFLAGS) $(DBGOPTS) /DFOSSIL_DEBUG /DTH_MEMDEBUG
LDFLAGS   = $(LDFLAGS) /DEBUG
!else
CFLAGS    = $(CFLAGS) $(CRTFLAGS) $(RELOPTS)
!endif

BCC       = $(CC) $(CFLAGS)
TCC       = $(CC) /c $(CFLAGS) $(MSCDEF) $(INCL)
RCC       = $(RC) /D_WIN32 /D_MSC_VER $(MSCDEF) $(INCL)
MTC       = mt
LIBS      = ws2_32.lib advapi32.lib dnsapi.lib
LIBDIR    =

!if $(FOSSIL_DYNAMIC_BUILD)!=0
TCC       = $(TCC) /DFOSSIL_DYNAMIC_BUILD=1
RCC       = $(RCC) /DFOSSIL_DYNAMIC_BUILD=1
!endif

LIBS      = $(LIBS) $(ZLIB)
LIBDIR    = $(LIBDIR) /LIBPATH:"$(ZLIBDIR)"

!if $(FOSSIL_ENABLE_JSON)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_JSON=1
RCC       = $(RCC) /DFOSSIL_ENABLE_JSON=1
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_SSL=1
RCC       = $(RCC) /DFOSSIL_ENABLE_SSL=1
LIBS      = $(LIBS) $(SSLLIB)
LIBDIR    = $(LIBDIR) /LIBPATH:"$(SSLLIBDIR)"
!endif

!if $(FOSSIL_ENABLE_EXEC_REL_PATHS)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_EXEC_REL_PATHS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_EXEC_REL_PATHS=1
!endif

!if $(FOSSIL_ENABLE_TH1_DOCS)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_TH1_DOCS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TH1_DOCS=1
!endif

!if $(FOSSIL_ENABLE_TH1_HOOKS)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_TH1_HOOKS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TH1_HOOKS=1
!endif

!if $(FOSSIL_ENABLE_TCL)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_TCL=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TCL=1
TCC       = $(TCC) /DFOSSIL_ENABLE_TCL_STUBS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TCL_STUBS=1
TCC       = $(TCC) /DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
TCC       = $(TCC) /DUSE_TCL_STUBS=1
RCC       = $(RCC) /DUSE_TCL_STUBS=1
!endif

!if $(USE_SEE)!=0
TCC       = $(TCC) /DUSE_SEE=1
RCC       = $(RCC) /DUSE_SEE=1
!endif
}
regsub -all {[-]D} [join $SQLITE_WIN32_OPTIONS { }] {/D} MSC_SQLITE_OPTIONS
set j " \\\n                 "
writeln "SQLITE_OPTIONS = [join $MSC_SQLITE_OPTIONS $j]\n"

regsub -all {[-]D} [join $SHELL_WIN32_OPTIONS { }] {/D} MSC_SHELL_OPTIONS
set j " \\\n                "
writeln "SHELL_OPTIONS = [join $MSC_SHELL_OPTIONS $j]\n"

regsub -all {[-]D} [join $PIKCHR_OPTIONS { }] {/D} MSC_PIKCHR_OPTIONS
set j " \\\n                "
writeln "PIKCHR_OPTIONS = [join $MSC_PIKCHR_OPTIONS $j]\n"

writeln -nonewline "SRC   = "
set i 0
foreach s [lsort $src] {
  if {$i > 0} {
    writeln " \\"
    writeln -nonewline "        "
  }
  writeln -nonewline "\"\$(OX)\\${s}_.c\""; incr i
}
foreach s [lsort $src_ext] {
  writeln " \\"
  writeln -nonewline "        "
  writeln -nonewline "\"\$(SRCDIR_extsrc)\\${s}.c\""; incr i
}
writeln "\n"
writeln -nonewline "EXTRA_FILES   = "
set i 0
foreach s [lsort $extra_files] {
  if {$i > 0} {
    writeln " \\"
    writeln -nonewline "        "
  }
  set s [regsub -all / $s \\]
  writeln -nonewline "\"\$(SRCDIR)\\${s}\""; incr i
}
writeln "\n"
set AdditionalObj [list shell sqlite3 th th_lang th_tcl cson_amalgamation pikchr]
writeln -nonewline "OBJ   = "
set i 0
foreach s [lsort [concat $src $AdditionalObj]] {
  if {$i > 0} {
    writeln " \\"
    writeln -nonewline "        "
  }
  writeln -nonewline "\"\$(OX)\\$s\$O\""; incr i
}
if {$i > 0} {
  writeln " \\"
}
writeln -nonewline "        \"\$(OX)\\fossil.res\"\n\n"
writeln [string map [list <<<NEXT_LINE>>> \\] {
!ifndef BASEAPPNAME
BASEAPPNAME = fossil
!endif

APPNAME     = $(OX)\$(BASEAPPNAME)$(E)
PDBNAME     = $(OX)\$(BASEAPPNAME)$(P)
APPTARGETS  =

all: "$(OX)" "$(APPNAME)"

$(BASEAPPNAME): "$(APPNAME)"

$(BASEAPPNAME)$(E): "$(APPNAME)"

install: "$(APPNAME)"
	echo F | xcopy /Y "$(APPNAME)" "$(INSTALLDIR)"\*
!if $(DEBUG)!=0
	echo F | xcopy /Y "$(PDBNAME)" "$(INSTALLDIR)"\*
!endif

$(OX):
	@-mkdir $@

zlib:
	@echo Building zlib from "$(ZLIBDIR)"...
!if $(FOSSIL_ENABLE_WINXP)!=0
	@pushd "$(ZLIBDIR)" && $(MAKE) /f win32\Makefile.msc $(ZLIB) "CC=cl $(XPCFLAGS)" "LD=link $(XPLDFLAGS)" && popd
!else
	@pushd "$(ZLIBDIR)" && $(MAKE) /f win32\Makefile.msc $(ZLIB) && popd
!endif

clean-zlib:
	@pushd "$(ZLIBDIR)" && $(MAKE) /f win32\Makefile.msc clean && popd

!if $(FOSSIL_ENABLE_SSL)!=0
openssl:
	@echo Building OpenSSL from "$(SSLDIR)"...
!if $(FOSSIL_ENABLE_WINXP)!=0
	@echo Passing XPCFLAGS = [ $(XPCFLAGS) ] to the OpenSSL configuration...
!endif
!ifdef PERLDIR
	@pushd "$(SSLDIR)" && "$(PERLDIR)\$(PERL)" Configure $(SSLCONFIG) && popd
!else
	@pushd "$(SSLDIR)" && "$(PERL)" Configure $(SSLCONFIG) && popd
!endif
	@pushd "$(SSLDIR)" && $(MAKE) && popd
!if $(FOSSIL_ENABLE_WINXP)!=0 && $(FOSSIL_DYNAMIC_BUILD)!=0
#
# NOTE: Appending custom linker flags to the OpenSSL default linker flags is
# somewhat difficult, as summarized in this Fossil Forum post:
#
#   https://fossil-scm.org/forum/forumpost/a9a2d6af28b
#
# Therefore the custom linker flags required for Windows XP dynamic builds are
# applied in a separate post-build step.
#
# If the build stops here, or if the custom linker flags are outside the scope
# of `editbin` or `link /EDIT` (i.e. additional libraries), consider tweaking
# the OpenSSL makefile by hand.
#
# Also note that this step changes the subsystem for the OpenSSL DLLs from
# WINDOWS to CONSOLE, but which has no effect on DLLs.
#
	@echo Applying XPLDFLAGS = [ $(XPLDFLAGS) ] to the OpenSSL DLLs...
	@for /F "usebackq delims=" %F in (`dir /A:-D/B "$(SSLDIR)\*.dll" 2^>nul`) <<<NEXT_LINE>>>
		do @( <<<NEXT_LINE>>>
			echo %F & <<<NEXT_LINE>>>
			link /EDIT /NOLOGO $(XPLDFLAGS) "$(SSLDIR)\%F" || exit 1 <<<NEXT_LINE>>>
		)
!endif

clean-openssl:
	@pushd "$(SSLDIR)" && $(MAKE) clean && popd
!endif

!if $(FOSSIL_BUILD_ZLIB)!=0
APPTARGETS = $(APPTARGETS) zlib
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
!if $(FOSSIL_BUILD_SSL)!=0
APPTARGETS = $(APPTARGETS) openssl
!endif
!endif

"$(APPNAME)" : $(APPTARGETS) "$(OBJDIR)\translate$E" "$(OBJDIR)\mkindex$E" "$(OBJDIR)\codecheck1$E" "$(OX)\headers" $(OBJ) "$(OX)\linkopts"
	"$(OBJDIR)\codecheck1$E" $(SRC)
	link $(LDFLAGS) /OUT:$@ /PDB:$(@D)\ $(LIBDIR) Wsetargv.obj "$(OX)\fossil.res" @"$(OX)\linkopts"
	if exist "$(B)\win\fossil.exe.manifest" <<<NEXT_LINE>>>
		$(MTC) -nologo -manifest "$(B)\win\fossil.exe.manifest" -outputresource:$@;1

"$(OX)\linkopts": "$(B)\win\Makefile.msc"}]
set redir {>}
foreach s [lsort [concat $src $AdditionalObj]] {
  writeln "\techo \"\$(OX)\\$s.obj\" $redir \$@"
  set redir {>>}
}
set redir {>>}
writeln "\techo \$(LIBS) $redir \$@"
writeln {
"$(OBJDIR)\translate$E": "$(SRCDIR_tools)\translate.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\makeheaders$E": "$(SRCDIR_tools)\makeheaders.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\mkindex$E": "$(SRCDIR_tools)\mkindex.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\mkbuiltin$E": "$(SRCDIR_tools)\mkbuiltin.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\mkversion$E": "$(SRCDIR_tools)\mkversion.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\codecheck1$E": "$(SRCDIR_tools)\codecheck1.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

!if $(USE_SEE)!=0
SEE_FLAGS = /DSQLITE_HAS_CODEC=1 /DSQLITE_SHELL_DBKEY_PROC=fossil_key
SQLITE3_SHELL_SRC = $(SRCDIR)\shell-see.c
SQLITE3_SRC = $(SRCDIR_extsrc)\sqlite3-see.c
!else
SEE_FLAGS =
SQLITE3_SHELL_SRC = $(SRCDIR_extsrc)\shell.c
SQLITE3_SRC = $(SRCDIR_extsrc)\sqlite3.c
!endif

"$(OX)\shell$O" : "$(SQLITE3_SHELL_SRC)" "$(B)\win\Makefile.msc"
	$(TCC) /Fo$@ /Fd$(@D)\ $(SHELL_OPTIONS) $(SQLITE_OPTIONS) $(SHELL_CFLAGS) $(SEE_FLAGS) -c "$(SQLITE3_SHELL_SRC)"

"$(OX)\sqlite3$O" : "$(SQLITE3_SRC)" "$(B)\win\Makefile.msc"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $(SEE_FLAGS) "$(SQLITE3_SRC)"

"$(OX)\th$O" : "$(SRCDIR)\th.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\th_lang$O" : "$(SRCDIR)\th_lang.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\th_tcl$O" : "$(SRCDIR)\th_tcl.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\pikchr$O" : "$(SRCDIR_extsrc)\pikchr.c"
	$(TCC) $(PIKCHR_OPTIONS) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\VERSION.h" : "$(OBJDIR)\mkversion$E" "$(B)\manifest.uuid" "$(B)\manifest" "$(B)\VERSION" "$(B)\phony.h"
	"$(OBJDIR)\mkversion$E" "$(B)\manifest.uuid" "$(B)\manifest" "$(B)\VERSION" > $@

"$(B)\phony.h" :
	rem Force rebuild of VERSION.h whenever nmake is run

"$(OX)\cson_amalgamation$O" : "$(SRCDIR_extsrc)\cson_amalgamation.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\page_index.h": "$(OBJDIR)\mkindex$E" $(SRC)
	$** > $@

"$(OX)\builtin_data.h":	"$(OBJDIR)\mkbuiltin$E" "$(OX)\builtin_data.reslist"
	"$(OBJDIR)\mkbuiltin$E" --prefix "$(SRCDIR)/" --reslist "$(OX)\builtin_data.reslist" > $@

cleanx:
	-del "$(OX)\*.obj" 2>NUL
	-del "$(OBJDIR)\*.obj" 2>NUL
	-del "$(OX)\*_.c" 2>NUL
	-del "$(OX)\*.h" 2>NUL
	-del "$(OX)\*.ilk" 2>NUL
	-del "$(OX)\*.map" 2>NUL
	-del "$(OX)\*.res" 2>NUL
	-del "$(OX)\*.reslist" 2>NUL
	-del "$(OX)\headers" 2>NUL
	-del "$(OX)\linkopts" 2>NUL
	-del "$(OX)\vc*.pdb" 2>NUL

clean: cleanx
	-del "$(APPNAME)" 2>NUL
	-del "$(PDBNAME)" 2>NUL
	-del "$(OBJDIR)\translate$E" 2>NUL
	-del "$(OBJDIR)\translate$P" 2>NUL
	-del "$(OBJDIR)\mkindex$E" 2>NUL
	-del "$(OBJDIR)\mkindex$P" 2>NUL
	-del "$(OBJDIR)\makeheaders$E" 2>NUL
	-del "$(OBJDIR)\makeheaders$P" 2>NUL
	-del "$(OBJDIR)\mkversion$E" 2>NUL
	-del "$(OBJDIR)\mkversion$P" 2>NUL
	-del "$(OBJDIR)\mkcss$E" 2>NUL
	-del "$(OBJDIR)\mkcss$P" 2>NUL
	-del "$(OBJDIR)\codecheck1$E" 2>NUL
	-del "$(OBJDIR)\codecheck1$P" 2>NUL
	-del "$(OBJDIR)\mkbuiltin$E" 2>NUL
	-del "$(OBJDIR)\mkbuiltin$P" 2>NUL

realclean: clean

"$(OBJDIR)\json$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_artifact$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_branch$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_config$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_diff$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_dir$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_finfo$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_login$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_query$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_report$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_status$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_tag$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_timeline$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_user$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_wiki$O" : "$(SRCDIR)\json_detail.h"
}

writeln {"$(OX)\builtin_data.reslist": $(EXTRA_FILES) "$(B)\win\Makefile.msc"}
set redir {>}
foreach s [lsort $extra_files] {
  writeln "\techo \"\$(SRCDIR)\\${s}\" $redir \$@"
  set redir {>>}
}

foreach s [lsort $src] {
  set extra_h($s) {}
}
set extra_h(builtin) " \"\$(OX)\\builtin_data.h\""
set extra_h(dispatch) " \"\$(OX)\\page_index.h\""

writeln ""
foreach s [lsort $src] {
  writeln "\"\$(OX)\\$s\$O\" : \"\$(OX)\\${s}_.c\" \"\$(OX)\\${s}.h\"$extra_h($s)"
  writeln "\t\$(TCC) /Fo\$@ /Fd\$(@D)\\ -c \"\$(OX)\\${s}_.c\"\n"
  writeln "\"\$(OX)\\${s}_.c\" : \"\$(SRCDIR)\\$s.c\""
  writeln "\t\"\$(OBJDIR)\\translate\$E\" \$** > \$@\n"
}

writeln "\"\$(OX)\\fossil.res\" : \"\$(B)\\win\\fossil.rc\""
writeln "\t\$(RCC) /fo \$@ \$**\n"

writeln "\"\$(OX)\\headers\": \"\$(OBJDIR)\\makeheaders\$E\" \"\$(OX)\\page_index.h\" \"\$(OX)\\builtin_data.h\" \"\$(OX)\\VERSION.h\""
writeln -nonewline "\t\"\$(OBJDIR)\\makeheaders\$E\" "
set i 0
foreach s [lsort $src] {
  if {$i > 0} {
    writeln " \\"
    writeln -nonewline "\t\t\t"
  }
  writeln -nonewline "\"\$(OX)\\${s}_.c\":\"\$(OX)\\$s.h\""; incr i
}
foreach s [lsort $src_ext] {
  writeln " \\"
  writeln -nonewline "\t\t\t"
  writeln -nonewline "\"\$(SRCDIR_extsrc)\\${s}.c\":\"\$(OX)\\$s.h\""; incr i
}
writeln " \\\n\t\t\t\"\$(SRCDIR_extsrc)\\sqlite3.h\" \\"
writeln "\t\t\t\"\$(SRCDIR)\\th.h\" \\"
writeln "\t\t\t\"\$(OX)\\VERSION.h\" \\"
writeln "\t\t\t\"\$(SRCDIR_extsrc)\\cson_amalgamation.h\""
writeln "\t@copy /Y nul: $@"


close $output_file
#
# End of the win/Makefile.msc output
##############################################################################
##############################################################################
Added tools/man_page_command_list.tcl.




































































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#!/usr/bin/env tclsh
# man_page_command_list.tcl - generates common command list for fossil.1

# Tunable configuration.
set columns 5
set width 15

# The only supported command-line argument is the optional output filename.
if {[llength $argv] == 1} {
    set file [lindex $argv 0]
}

# Get list of common commands.
set commands [exec fossil help]
regsub -nocase {.*?\nfrequently used commands:.*\n} $commands {} commands
regsub -nocase {\nthis is fossil version.*} $commands {} commands
regsub -all {\s+} $commands " " commands
set commands [lsort $commands]

# Compute number of rows.
set rows [expr {([llength $commands] + $columns - 1) / $columns}]

# Generate text one line at a time.
set text {}
for {set row 0} {$row < $rows} {incr row} {
    # Separate rows with line break.
    if {$row} {
        append text .br\n
    }

    # Generate the row of commands.
    for {set col 0} {$col < $columns} {incr col} {
        set i [expr {$col * $rows + $row}]
        if {$i < [llength $commands]} {
            append text [format %-*s $width [lindex $commands $i]]
        }
    }
    append text \n
}

# Strip trailing whitespace from each line.
regsub -all {\s+\n} $text \n text

# Output text.
if {[info exists file]} {
    # If a filename was specified, read the file for use as a template.
    set chan [open $file]
    set data [read $chan]
    close $chan

    # Locate the part of the file to replace.
    if {[regexp -indices {\n\.SH Common COMMANDs:\n\n(.*?)\n\.SH} $data\
            _ range]} {
        # If found, replace with the updated command list.
        set chan [open $file w]
        puts -nonewline $chan [string replace $data\
                [lindex $range 0] [lindex $range 1] $text]
        close $chan
    } else {
        # If not found, abort.
        error "could not find command list in man file \"$file\""
    }
} else {
    # If no filename was specified, write to stdout.
    puts $text
}

# vim: set sts=4 sw=4 tw=80 et ft=tcl:
Added tools/mkbuiltin.c.































































































































































































































































































































































































































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/*
** Copyright (c) 2014 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This is a stand-alone utility program that is part of the Fossil build
** process.  This program reads files named on the command line and converts
** them into ANSI-C static char array variables.  Output is written onto
** standard output.
**
** Additionally, the input files may be listed in a separate list file (one
** resource name per line, optionally enclosed in double quotes). Pass the list
** via '--reslist <the-list-file>' option. Both lists, from the command line and
** the list file, are merged; duplicate file names skipped from processing.
** This option is useful to get around the command line length limitations
** under some OS, like Windows.
**
** The makefiles use this utility to package various resources (large scripts,
** GIF images, etc) that are separate files in the source code as byte
** arrays in the resulting executable.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

/*
** Read the entire content of the file named zFilename into memory obtained
** from malloc() and return a pointer to that memory.  Write the size of the
** file into *pnByte.
*/
static unsigned char *read_file(const char *zFilename, int *pnByte){
  FILE *in;
  unsigned char *z;
  int nByte;
  int got;
  in = fopen(zFilename, "rb");
  if( in==0 ){
    return 0;
  }
  fseek(in, 0, SEEK_END);
  *pnByte = nByte = ftell(in);
  fseek(in, 0, SEEK_SET);
  z = malloc( nByte+1 );
  if( z==0 ){
    fprintf(stderr, "failed to allocate %d bytes\n", nByte+1);
    exit(1);
  }
  got = fread(z, 1, nByte, in);
  fclose(in);
  z[got] = 0;
  return z;
}

#ifndef FOSSIL_DEBUG
/*
** Try to compress a javascript file by removing unnecessary whitespace.
**
** Warning:  This compression routine does not necessarily work for any
** arbitrary Javascript source file.  But it should work ok for the
** well-behaved source files in this project.
*/
static void compressJavascript(unsigned char *z, int *pn){
  int n = *pn;
  int i, j, k;
  for(i=j=0; i<n; i++){
    unsigned char c = z[i];
    if( c=='/' && (i==0 || z[i-1]!=':')){
      if( z[i+1]=='*' ){
        while( j>0 && (z[j-1]==' ' || z[j-1]=='\t') ){ j--; }
        for(k=i+3; k<n && (z[k]!='/' || z[k-1]!='*'); k++){}
        i = k;
        continue;
      }else if( z[i+1]=='/' ){
        while( j>0 && (z[j-1]==' ' || z[j-1]=='\t') ){ j--; }
        for(k=i+2; k<n && z[k]!='\n'; k++){}
        i = k-1;
        continue;
      }
    }
    if( c=='\n' ){
      if( j==0 ) continue;
      while( j>0 && isspace(z[j-1]) ) j--;
      z[j++] = '\n';
      while( i+1<n && isspace(z[i+1]) ) i++;
      continue;
    }
    z[j++] = c;
  }
  z[j] = 0;
  *pn = j;
}
#endif /* FOSSIL_DEBUG */

/*
** There is an instance of the following for each file translated.
*/
typedef struct Resource Resource;
struct Resource {
  char *zName;
  int nByte;
  int idx;
};

typedef struct ResourceList ResourceList;
struct ResourceList {
    Resource *aRes;
    int nRes;
    char *buf;
    long bufsize;
};


Resource *read_reslist(char *name, ResourceList *list){
#define RESLIST_BUF_MAXBYTES (1L<<20)  /* 1 MB of text */
  FILE *in;
  long filesize = 0L;
  long linecount = 0L;
  char *p = 0;
  char *pb = 0;

  memset(list, 0, sizeof(*list));

  if( (in = fopen(name, "rb"))==0 ){
    return list->aRes;
  }
  fseek(in, 0L, SEEK_END);
  filesize = ftell(in);
  rewind(in);

  if( filesize > RESLIST_BUF_MAXBYTES ){
    fprintf(stderr, "List file [%s] must be smaller than %ld bytes\n", name,
            RESLIST_BUF_MAXBYTES);
    return list->aRes;
  }
  list->bufsize = filesize;
  list->buf = (char *)calloc((list->bufsize + 2), sizeof(list->buf[0]));
  if( list->buf==0 ){
    fprintf(stderr, "failed to allocated %ld bytes\n", list->bufsize + 1);
    list->bufsize = 0L;
    return list->aRes;
  }
  filesize = fread(list->buf, sizeof(list->buf[0]),list->bufsize, in);
  if ( filesize!=list->bufsize ){
    fprintf(stderr, "failed to read [%s]\n", name);
    return list->aRes;
  }
  fclose(in);

  /*
  ** append an extra newline (if missing) for a correct line count
  */
  if( list->buf[list->bufsize-1]!='\n' ) list->buf[list->bufsize]='\n';

  linecount = 0L;
  for( p = strchr(list->buf, '\n');
       p && p <= &list->buf[list->bufsize-1];
       p = strchr(++p, '\n') ){
    ++linecount;
  }

  list->aRes = (Resource *)calloc(linecount+1, sizeof(list->aRes[0]));
  for( pb = list->buf, p = strchr(pb, '\n');
       p && p <= &list->buf[list->bufsize-1];
       pb = ++p, p = strchr(pb, '\n') ){

    char *path = pb;
    char *pe = p - 1;

    /* strip leading and trailing whitespace */
    while( path < p && isspace(*path) ) ++path;
    while( pe > path && isspace(*pe) ){
      *pe = '\0';
      --pe;
    }

    /* strip outer quotes */
    while( path < p && *path=='\"') ++path;
    while( pe > path && *pe=='\"' ){
      *pe = '\0';
      --pe;
    }
    *p = '\0';

    /* skip empty path */
    if( *path ){
      list->aRes[list->nRes].zName = path;
      ++(list->nRes);
    }
  }
  return list->aRes;
}

void free_reslist(ResourceList *list){
  if( list ){
    if( list->buf ) free(list->buf);
    if( list->aRes) free(list->aRes);
    memset(list, 0, sizeof(*list));
  }
}

/*
** Compare two Resource objects for sorting purposes.  They sort
** in zName order so that Fossil can search for resources using
** a binary search.
*/
typedef int (*QsortCompareFunc)(const void *, const void*);

static int compareResource(const Resource *a, const Resource *b){
  return strcmp(a->zName, b->zName);
}

int remove_duplicates(ResourceList *list){
  char dupNameAsc[64] = "\255";
  char dupNameDesc[64] = "";
  Resource dupResAsc;
  Resource dupResDesc;
  Resource *pDupRes;
  int dupcount = 0;
  int i;

  if( list->nRes==0 ){
    return list->nRes;
  }

  /*
  ** scan for duplicates and assign their names to a string that would sort to
  ** the bottom, then re-sort and truncate the duplicates
  */
  memset(dupNameAsc, dupNameAsc[0], sizeof(dupNameAsc)-2);
  memset(dupNameDesc, dupNameDesc[0], sizeof(dupNameDesc)-2);
  memset(&dupResAsc, 0, sizeof(dupResAsc));
  dupResAsc.zName = dupNameAsc;
  memset(&dupResDesc, 0, sizeof(dupResDesc));
  dupResDesc.zName = dupNameDesc;
  pDupRes = (compareResource(&dupResAsc, &dupResDesc) > 0
             ? &dupResAsc : &dupResDesc);

  qsort(list->aRes, list->nRes, sizeof(list->aRes[0]),
       (QsortCompareFunc)compareResource);
  for( i=0; i<list->nRes-1 ; ++i){
    Resource *res = &list->aRes[i];

    while( i<list->nRes-1
           && compareResource(res, &list->aRes[i+1])==0 ){
      fprintf(stderr, "Skipped a duplicate file [%s]\n", list->aRes[i+1].zName);
      memcpy(&list->aRes[i+1], pDupRes, sizeof(list->aRes[0]));
      ++dupcount;

      ++i;
    }
  }
  if( dupcount == 0){
    return list->nRes;
  }
  qsort(list->aRes, list->nRes, sizeof(list->aRes[0]),
       (QsortCompareFunc)compareResource);
  list->nRes -= dupcount;
  memset(&list->aRes[list->nRes], 0, sizeof(list->aRes[0]));

  return list->nRes;
}

int main(int argc, char **argv){
  int i, sz;
  int j, n;
  ResourceList resList;
  Resource *aRes;
  int nRes;
  unsigned char *pData;
  int nErr = 0;
  int nSkip;
  int nPrefix = 0;
#ifndef FOSSIL_DEBUG
  int nName;
#endif

  if( argc==1 ){
    fprintf(stderr, "usage\t:%s "
      "[--prefix path] [--reslist file] [resource-file1 ...]\n",
       argv[0]
    );
    return 1;
  }
  if( argc>3 && strcmp(argv[1],"--prefix")==0 ){
    nPrefix = (int)strlen(argv[2]);
    argc -= 2;
    argv += 2;
  }

  memset(&resList, 0, sizeof(resList));
  if( argc>2 && strcmp(argv[1],"--reslist")==0 ){
    if( read_reslist(argv[2], &resList)==0 ){
      fprintf(stderr, "Failed to load resource list from [%s]", argv[2]);
      free_reslist(&resList);
      return 1;
    }
    argc -= 2;
    argv += 2;
  }

  if( argc>1 ){
    aRes = realloc(resList.aRes, (resList.nRes+argc-1)*sizeof(resList.aRes[0]));
    if( aRes==0 || aRes==resList.aRes ){
      fprintf(stderr, "realloc failed\n");
      free_reslist(&resList);
      return 1;
    }
    resList.aRes = aRes;

    for(i=0; i<argc-1; i++){
      resList.aRes[resList.nRes].zName = argv[i+1];
      ++resList.nRes;
    }
  }

  if( resList.nRes==0 ){
      fprintf(stderr,"No resource files to process\n");
      free_reslist(&resList);
      return 1;
  }
  remove_duplicates(&resList);

  nRes = resList.nRes;
  aRes = resList.aRes;
  qsort(aRes, nRes, sizeof(aRes[0]), (QsortCompareFunc)compareResource);

  printf("/* Automatically generated code:  Do not edit.\n**\n"
         "** Rerun the \"mkbuiltin.c\" program or rerun the Fossil\n"
         "** makefile to update this source file.\n"
         "*/\n");
  for(i=0; i<nRes; i++){
    pData = read_file(aRes[i].zName, &sz);
    if( pData==0 ){
      fprintf(stderr, "Cannot open file [%s]\n", aRes[i].zName);
      nErr++;
      continue;
    }

    /* Skip initial lines beginning with # */
    nSkip = 0;
    while( pData[nSkip]=='#' ){
      while( pData[nSkip]!=0 && pData[nSkip]!='\n' ){ nSkip++; }
      if( pData[nSkip]=='\n' ) nSkip++;
    }

#ifndef FOSSIL_DEBUG
    /* Compress javascript source files */
    nName = (int)strlen(aRes[i].zName);
    if( (nName>3 && strcmp(&aRes[i].zName[nName-3],".js")==0)
     || (nName>7  && strcmp(&aRes[i].zName[nName-7], "/js.txt")==0)
    ){
      int x = sz-nSkip;
      compressJavascript(pData+nSkip, &x);
      sz = x + nSkip;
    }
#endif

    aRes[i].nByte = sz - nSkip;
    aRes[i].idx = i;
    printf("/* Content of file %s */\n", aRes[i].zName);
    printf("static const unsigned char bidata%d[%d] = {\n  ",
           i, sz+1-nSkip);
    for(j=nSkip, n=0; j<=sz; j++){
      printf("%3d", pData[j]);
      if( j==sz ){
        printf(" };\n");
      }else if( n==14 ){
        printf(",\n  ");
        n = 0;
      }else{
        printf(", ");
        n++;
      }
    }
    free(pData);
  }
  printf("typedef struct BuiltinFileTable BuiltinFileTable;\n");
  printf("struct BuiltinFileTable {\n");
  printf("  const char *zName;\n");
  printf("  const unsigned char *pData;\n");
  printf("  int nByte;\n");
  printf("};\n");
  printf("static const BuiltinFileTable aBuiltinFiles[] = {\n");
  for(i=0; i<nRes; i++){
    char *z = aRes[i].zName;
    if( strlen(z)>=nPrefix ) z += nPrefix;
    while( z[0]=='.' || z[0]=='/' || z[0]=='\\' ){ z++; }
    aRes[i].zName = z;
    while( z[0] ){
      if( z[0]=='\\' ) z[0] = '/';
      z++;
    }
  }
  qsort(aRes, nRes, sizeof(aRes[0]), (QsortCompareFunc)compareResource);
  for(i=0; i<nRes; i++){
    printf("  { \"%s\", bidata%d, %d },\n",
           aRes[i].zName, aRes[i].idx, aRes[i].nByte);
  }
  printf("};\n");
  free_reslist(&resList);
  return nErr;
}
Added tools/mkindex.c.





















































































































































































































































































































































































































































































































































































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/*
** Copyright (c) 2002 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This utility program scans Fossil source text looking for specially
** formatted comments and generates C source code for constant tables
** that define the behavior of commands, webpages, and settings.
**
** The source code is scanned for comment lines of the form:
**
**       WEBPAGE:  /abc/xyz
**       COMMAND:  cmdname
**       SETTING:  access-log
**
** The WEBPAGE and COMMAND comments should be followed by a function that
** implements the webpage or command.  The form of this function is:
**
**       void function_name(void){
**
** Command names can divided into three classes:  1st-tier, 2nd-tier,
** and test.  1st-tier commands are the most frequently used and the
** ones that show up with "fossil help".  2nd-tier are seldom-used and/or
** legacy commands.  Test commands are unsupported commands used for testing
** and analysis only.
**
** Commands are 1st-tier by default.  If the command name begins with
** "test-" or if the command name has a "test" argument, then it becomes
** a test command.  If the command name has a "2nd-tier" argument or ends
** with a "*" character, it is second tier.  If the command name has an "alias"
** argument or ends with a "#" character, it is an alias: another name
** (a one-to-one replacement) for a command.  Examples:
**
**        COMMAND:  abcde*
**        COMMAND:  fghij        2nd-tier
**        COMMAND:  mnopq#
**        COMMAND:  rstuv        alias
**        COMMAND:  test-xyzzy
**        COMMAND:  xyzzy        test
**
** A SETTING: may be followed by arguments that give additional attributes
** to that setting:
**
**        SETTING:  clean-blob   versionable width=40 block-text
**        SETTING:  auto-shun    boolean default=on
**
** New arguments may be added in future releases that set additional
** bits in the eCmdFlags field.
**
** Additional lines of comment after the COMMAND: or WEBPAGE: or SETTING:
** become the built-in help text for that command or webpage or setting.
** Backslashes must be escaped ("\\" in comment yields "\" in the help text.)
**
** Multiple COMMAND: entries can be attached to the same command, thus
** creating multiple aliases for that command.  Similarly, multiple
** WEBPAGE: entries can be attached to the same webpage function, to give
** that page aliases.
**
** For SETTING: entries, the default value for the setting can be specified
** using a default=VALUE argument if the default contains no spaces.  If the
** default value does contain spaces, use a separate line like this:
**
**        SETTING: pgp-command
**        DEFAULT: gpg --clearsign -o
**
** If no default is supplied, the default is assumed to be an empty string
** or "off" in the case of a boolean.
*/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>

/***************************************************************************
** These macros must match similar macros in dispatch.c.
**
** Allowed values for CmdOrPage.eCmdFlags. */
#define CMDFLAG_1ST_TIER     0x0001     /* Most important commands */
#define CMDFLAG_2ND_TIER     0x0002     /* Obscure and seldom used commands */
#define CMDFLAG_TEST         0x0004     /* Commands for testing only */
#define CMDFLAG_WEBPAGE      0x0008     /* Web pages */
#define CMDFLAG_COMMAND      0x0010     /* A command */
#define CMDFLAG_SETTING      0x0020     /* A setting */
#define CMDFLAG_VERSIONABLE  0x0040     /* A versionable setting */
#define CMDFLAG_BLOCKTEXT    0x0080     /* Multi-line text setting */
#define CMDFLAG_BOOLEAN      0x0100     /* A boolean setting */
#define CMDFLAG_RAWCONTENT   0x0200     /* Do not interpret webpage content */
#define CMDFLAG_SENSITIVE    0x0400     /* Security-sensitive setting */
#define CMDFLAG_HIDDEN       0x0800     /* Elide from most listings */
#define CMDFLAG_LDAVG_EXEMPT 0x1000     /* Exempt from load_control() */
#define CMDFLAG_ALIAS        0x2000     /* Command aliases */
#define CMDFLAG_KEEPEMPTY    0x4000     /* Do not unset empty settings */
/**************************************************************************/

/*
** Each entry looks like this:
*/
typedef struct Entry {
  int eType;        /* CMDFLAG_* values */
  char *zIf;        /* Enclose in #if */
  char *zFunc;      /* Name of implementation */
  char *zPath;      /* Webpage or command name */
  char *zHelp;      /* Help text */
  char *zDflt;      /* Default value for settings */
  char *zVar;       /* config.name for settings, if different from zPath */
  int iHelp;        /* Index of Help text */
  int iWidth;       /* Display width for SETTING: values */
} Entry;

/*
** Maximum number of entries
*/
#define N_ENTRY 5000

/*
** Maximum size of a help message
*/
#define MX_HELP 250000

/*
** Table of entries
*/
Entry aEntry[N_ENTRY];

/*
** Current help message accumulator
*/
char zHelp[MX_HELP];
int nHelp;

/*
** Most recently encountered #if
*/
char zIf[2000];

/*
** How many entries are used
*/
int nUsed;
int nFixed;

/*
** Current filename and line number
*/
char *zFile;
int nLine;

/*
** Number of errors
*/
int nErr = 0;

/*
** Duplicate N characters of a string.
*/
char *string_dup(const char *zSrc, int n){
  char *z;
  if( n<0 ) n = strlen(zSrc);
  z = malloc( n+1 );
  if( z==0 ){ fprintf(stderr,"Out of memory!\n"); exit(1); }
  strncpy(z, zSrc, n);
  z[n] = 0;
  return z;
}

/*
** Safe isspace macro.  Works with signed characters.
*/
int fossil_isspace(char c){
  return c==' ' || (c<='\r' && c>='\t');
}

/*
** Safe isident macro.  Works with signed characters.
*/
int fossil_isident(char c){
  if( c>='a' && c<='z' ) return 1;
  if( c>='A' && c<='Z' ) return 1;
  if( c>='0' && c<='9' ) return 1;
  if( c=='_' ) return 1;
  return 0;
}

/*
** Scan a line looking for comments containing zLabel.  Make
** new entries if found.
*/
void scan_for_label(const char *zLabel, char *zLine, int eType){
  int i, j;
  int len = strlen(zLabel);
  if( nUsed>=N_ENTRY ) return;
  for(i=0; fossil_isspace(zLine[i]) || zLine[i]=='*'; i++){}
  if( zLine[i]!=zLabel[0] ) return;
  if( strncmp(&zLine[i],zLabel, len)==0 ){
    i += len;
  }else{
    return;
  }
  while( fossil_isspace(zLine[i]) ){ i++; }
  if( zLine[i]=='/' ) i++;
  for(j=0; zLine[i+j] && !fossil_isspace(zLine[i+j]); j++){}
  aEntry[nUsed].eType = eType;
  if( eType & CMDFLAG_WEBPAGE ){
    aEntry[nUsed].zPath = string_dup(&zLine[i-1], j+1);
    aEntry[nUsed].zPath[0] = '/';
  }else{
    aEntry[nUsed].zPath = string_dup(&zLine[i], j);
  }
  aEntry[nUsed].zFunc = 0;
  if( (eType & CMDFLAG_COMMAND)!=0 ){
    if( strncmp(&zLine[i], "test-", 5)==0 ){
      /* Commands that start with "test-" are test-commands */
      aEntry[nUsed].eType |= CMDFLAG_TEST;
    }else if( zLine[i+j-1]=='*' ){
      /* If the command name ends in '*', remove the '*' from the name
      ** but move the command into the second tier */
      aEntry[nUsed].zPath[j-1] = 0;
      aEntry[nUsed].eType |= CMDFLAG_2ND_TIER;
    }else if( zLine[i+j-1]=='#' ){
      /* If the command name ends in '#', remove the '#' from the name
      ** but move the command into aliases */
      aEntry[nUsed].zPath[j-1] = 0;
      aEntry[nUsed].eType |= CMDFLAG_ALIAS;
    }else{
      /* Otherwise, this is a first-tier command */
      aEntry[nUsed].eType |= CMDFLAG_1ST_TIER;
    }
  }

  /* Process additional flags that might follow the command name */
  while( zLine[i+j]!=0 ){
    i += j;
    while( fossil_isspace(zLine[i]) ){ i++; }
    if( zLine[i]==0 ) break;
    for(j=0; zLine[i+j] && !fossil_isspace(zLine[i+j]); j++){}
    if( j==8 && strncmp(&zLine[i], "1st-tier", j)==0 ){
      aEntry[nUsed].eType &= ~(CMDFLAG_2ND_TIER|CMDFLAG_TEST|CMDFLAG_ALIAS);
      aEntry[nUsed].eType |= CMDFLAG_1ST_TIER;
    }else if( j==8 && strncmp(&zLine[i], "2nd-tier", j)==0 ){
      aEntry[nUsed].eType &= ~(CMDFLAG_1ST_TIER|CMDFLAG_TEST|CMDFLAG_ALIAS);
      aEntry[nUsed].eType |= CMDFLAG_2ND_TIER;
    }else if( j==4 && strncmp(&zLine[i], "test", j)==0 ){
      aEntry[nUsed].eType &= ~(CMDFLAG_1ST_TIER|CMDFLAG_2ND_TIER|CMDFLAG_ALIAS);
      aEntry[nUsed].eType |= CMDFLAG_TEST;
    }else if( j==5 && strncmp(&zLine[i], "alias", j)==0 ){
      aEntry[nUsed].eType &= ~(CMDFLAG_1ST_TIER|CMDFLAG_2ND_TIER|CMDFLAG_TEST);
      aEntry[nUsed].eType |= CMDFLAG_ALIAS;
    }else if( j==11 && strncmp(&zLine[i], "raw-content", j)==0 ){
      aEntry[nUsed].eType |= CMDFLAG_RAWCONTENT;
    }else if( j==7 && strncmp(&zLine[i], "boolean", j)==0 ){
      aEntry[nUsed].eType &= ~(CMDFLAG_BLOCKTEXT);
      aEntry[nUsed].iWidth = 0;
      aEntry[nUsed].eType |= CMDFLAG_BOOLEAN;
    }else if( j==10 && strncmp(&zLine[i], "block-text", j)==0 ){
      aEntry[nUsed].eType &= ~(CMDFLAG_BOOLEAN);
      aEntry[nUsed].eType |= CMDFLAG_BLOCKTEXT;
    }else if( j==10 && strncmp(&zLine[i], "keep-empty", j)==0 ){
      aEntry[nUsed].eType |= CMDFLAG_KEEPEMPTY;
    }else if( j==11 && strncmp(&zLine[i], "versionable", j)==0 ){
      aEntry[nUsed].eType |= CMDFLAG_VERSIONABLE;
    }else if( j==9 && strncmp(&zLine[i], "sensitive", j)==0 ){
      aEntry[nUsed].eType |= CMDFLAG_SENSITIVE;
    }else if( j>6 && strncmp(&zLine[i], "width=", 6)==0 ){
      aEntry[nUsed].iWidth = atoi(&zLine[i+6]);
    }else if( j>8 && strncmp(&zLine[i], "default=", 8)==0 ){
      aEntry[nUsed].zDflt = string_dup(&zLine[i+8], j-8);
    }else if( j>9 && strncmp(&zLine[i], "variable=", 9)==0 ){
      aEntry[nUsed].zVar = string_dup(&zLine[i+9], j-9);
    }else if( j==6 && strncmp(&zLine[i], "hidden", 6)==0 ){
      aEntry[nUsed].eType |= CMDFLAG_HIDDEN;
    }else if( j==14 && strncmp(&zLine[i], "loadavg-exempt", 14)==0 ){
      aEntry[nUsed].eType |= CMDFLAG_LDAVG_EXEMPT;
    }else{
      fprintf(stderr, "%s:%d: unknown option: '%.*s'\n",
              zFile, nLine, j, &zLine[i]);
      nErr++;
    }
  }

  nUsed++;
  return;
}

/*
** Check to see if the current line is an #if and if it is, add it to
** the zIf[] string.  If the current line is an #endif or #else or #elif
** then cancel the current zIf[] string.
*/
void scan_for_if(const char *zLine){
  int i;
  int len;
  if( zLine[0]!='#' ) return;
  for(i=1; fossil_isspace(zLine[i]); i++){}
  if( zLine[i]==0 ) return;
  len = strlen(&zLine[i]);
  if( strncmp(&zLine[i],"if",2)==0 ){
    zIf[0] = '#';
    memcpy(&zIf[1], &zLine[i], len+1);
  }else if( zLine[i]=='e' ){
    zIf[0] = 0;
  }
}

/*
** Check to see if the current line is a "** DEFAULT: ..." line for a
** SETTING definition.  If so, remember the default value.
*/
void scan_for_default(const char *zLine){
  int len;
  const char *z;
  if( nUsed<1 ) return;
  if( (aEntry[nUsed-1].eType & CMDFLAG_SETTING)==0 ) return;
  if( strncmp(zLine, "** DEFAULT: ", 12)!=0 ) return;
  z = zLine + 12;
  while( fossil_isspace(z[0]) ) z++;
  len = (int)strlen(z);
  while( len>0 && fossil_isspace(z[len-1]) ){ len--; }
  aEntry[nUsed-1].zDflt = string_dup(z,len);
}

/* Local strcpy() clone to squelch an unwarranted warning from OpenBSD. */
static void local_strcpy(char *dest, const char *src){
  while( (*(dest++) = *(src++))!=0 ){}
}

/*
** Scan a line for a function that implements a web page or command.
*/
void scan_for_func(char *zLine){
  int i,j,k;
  char *z;
  int isSetting;
  if( nUsed<=nFixed ) return;
  if( strncmp(zLine, "**", 2)==0
   && fossil_isspace(zLine[2])
   && strlen(zLine)<sizeof(zHelp)-nHelp-1
   && nUsed>nFixed
   && strncmp(zLine,"** COMMAND:",11)!=0
   && strncmp(zLine,"** WEBPAGE:",11)!=0
   && strncmp(zLine,"** SETTING:",11)!=0
   && strncmp(zLine,"** DEFAULT:",11)!=0
  ){
    if( zLine[2]=='\n' ){
      zHelp[nHelp++] = '\n';
    }else{
      if( strncmp(&zLine[3], "Usage: ", 6)==0 ) nHelp = 0;
      local_strcpy(&zHelp[nHelp], &zLine[3]);
      nHelp += strlen(&zHelp[nHelp]);
    }
    return;
  }
  for(i=0; fossil_isspace(zLine[i]); i++){}
  if( zLine[i]==0 ) return;
  isSetting = (aEntry[nFixed].eType & CMDFLAG_SETTING)!=0;
  if( !isSetting ){
    if( strncmp(&zLine[i],"void",4)!=0 ){
      if( zLine[i]!='*' ) goto page_skip;
      return;
    }
    i += 4;
    if( !fossil_isspace(zLine[i]) ) goto page_skip;
    while( fossil_isspace(zLine[i]) ){ i++; }
    for(j=0; fossil_isident(zLine[i+j]); j++){}
    if( j==0 ) goto page_skip;
  }else{
    j = 0;
  }
  for(k=nHelp-1; k>=0 && fossil_isspace(zHelp[k]); k--){}
  nHelp = k+1;
  zHelp[nHelp] = 0;
  for(k=0; k<nHelp && fossil_isspace(zHelp[k]); k++){}
  if( k<nHelp ){
    z = string_dup(&zHelp[k], nHelp-k);
  }else{
    z = "";
  }
  for(k=nFixed; k<nUsed; k++){
    aEntry[k].zIf = zIf[0] ? string_dup(zIf, -1) : 0;
    aEntry[k].zFunc = isSetting ? "0" : string_dup(&zLine[i], j);
    aEntry[k].zHelp = z;
    z = 0;
    aEntry[k].iHelp = nFixed;
  }
  if( !isSetting ){
    i+=j;
    while( fossil_isspace(zLine[i]) ){ i++; }
    if( zLine[i]!='(' ) goto page_skip;
  }
  nFixed = nUsed;
  nHelp = 0;
  return;

page_skip:
   for(i=nFixed; i<nUsed; i++){
      fprintf(stderr,"%s:%d: skipping page \"%s\"\n",
         zFile, nLine, aEntry[i].zPath);
   }
   nUsed = nFixed;
}

/*
** Compare two entries
*/
int e_compare(const void *a, const void *b){
  const Entry *pA = (const Entry*)a;
  const Entry *pB = (const Entry*)b;
  return strcmp(pA->zPath, pB->zPath);
}

/*
** Build the binary search table.
*/
void build_table(void){
  int i;
  int nWeb = 0;
  int mxLen = 0;

  qsort(aEntry, nFixed, sizeof(aEntry[0]), e_compare);

  printf(
    "/* Automatically generated code\n"
    "** DO NOT EDIT!\n"
    "**\n"
    "** This file was generated by the mkindex.exe program based on\n"
    "** comments in other Fossil source files.\n"
    "*/\n"
  );

  /* Output declarations for all the action functions */
  for(i=0; i<nFixed; i++){
    if( aEntry[i].eType & CMDFLAG_SETTING ) continue;
    if( aEntry[i].zIf ) printf("%s", aEntry[i].zIf);
    printf("extern void %s(void);\n", aEntry[i].zFunc);
    if( aEntry[i].zIf ) printf("#endif\n");
  }

  /* Output strings for all the help text */
  for(i=0; i<nFixed; i++){
    char *z = aEntry[i].zHelp;
    if( z==0 ) continue;
    if( aEntry[i].zIf ) printf("%s", aEntry[i].zIf);
    printf("static const char zHelp%03d[] =\n  \"", aEntry[i].iHelp);
    while( *z ){
      if( *z=='\n' ){
        printf("\\n\"\n  \"");
      }else if( *z=='"' ){
        printf("\\\"");
      }else{
        putchar(*z);
      }
      z++;
    }
    printf("\";\n");
    if( aEntry[i].zIf ) printf("#endif\n");
  }

  /* Generate the aCommand[] table */
  printf("static const CmdOrPage aCommand[] = {\n");
  for(i=0; i<nFixed; i++){
    const char *z = aEntry[i].zPath;
    int n = strlen(z);
    if( n>mxLen ) mxLen = n;
    if( aEntry[i].zIf ){
      printf("%s", aEntry[i].zIf);
    }else if( (aEntry[i].eType & CMDFLAG_WEBPAGE)!=0 ){
      nWeb++;
    }
    printf("  { \"%.*s\",%*s%s,%*szHelp%03d, %3d, 0x%03x },\n",
      n, z,
      25-n, "",
      aEntry[i].zFunc,
      (int)(29-strlen(aEntry[i].zFunc)), "",
      aEntry[i].iHelp,
      aEntry[i].iHelp,
      aEntry[i].eType
    );
    if( aEntry[i].zIf ) printf("#endif\n");
  }
  printf("};\n");
  printf("#define FOSSIL_FIRST_CMD %d\n", nWeb);
  printf("#define FOSSIL_MX_CMDNAME %d /* max length of any command name */\n",
         mxLen);
  printf("#define FOSSIL_MX_CMDIDX %d /* max index for commands */\n", nFixed);

  /* Generate the aSetting[] table */
  printf("const Setting aSetting[] = {\n");
  for(i=0; i<nFixed; i++){
    const char *z;
    const char *zVar;
    const char *zDef;
    if( (aEntry[i].eType & CMDFLAG_SETTING)==0 ) continue;
    z = aEntry[i].zPath;
    zVar = aEntry[i].zVar;
    zDef = aEntry[i].zDflt;
    if( zDef==0 ) zDef = "";
    if( aEntry[i].zIf ){
      printf("%s", aEntry[i].zIf);
    }
    printf("  { \"%s\",%*s", z, (int)(20-strlen(z)), "");
    if( zVar ){
      printf(" \"%s\",%*s", zVar, (int)(15-strlen(zVar)), "");
    }else{
      printf(" 0,%*s", 16, "");
    }
    printf(" %3d, %d, %d, %d, \"%s\"%*s },\n",
      aEntry[i].iWidth,
      (aEntry[i].eType & CMDFLAG_VERSIONABLE)!=0,
      (aEntry[i].eType & CMDFLAG_BLOCKTEXT)!=0,
      (aEntry[i].eType & CMDFLAG_SENSITIVE)!=0,
      zDef, (int)(10-strlen(zDef)), ""
    );
    if( aEntry[i].zIf ){
      printf("#endif\n");
    }
  }
  printf("{0,0,0,0,0,0,0}};\n");

}

/*
** Process a single file of input
*/
void process_file(void){
  FILE *in = fopen(zFile, "r");
  char zLine[2000];
  if( in==0 ){
    fprintf(stderr,"%s: cannot open\n", zFile);
    return;
  }
  nLine = 0;
  while( fgets(zLine, sizeof(zLine), in) ){
    nLine++;
    scan_for_if(zLine);
    scan_for_label("WEBPAGE:",zLine,CMDFLAG_WEBPAGE);
    scan_for_label("COMMAND:",zLine,CMDFLAG_COMMAND);
    scan_for_func(zLine);
    scan_for_label("SETTING:",zLine,CMDFLAG_SETTING);
    scan_for_default(zLine);
  }
  fclose(in);
  nUsed = nFixed;
}

int main(int argc, char **argv){
  int i;
  memset(aEntry, 0, sizeof(Entry) * N_ENTRY);
  for(i=1; i<argc; i++){
    zFile = argv[i];
    process_file();
  }
  build_table();
  return nErr;
}
Added tools/mkversion.c.


























































































































































































































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/*
** This C program generates the "VERSION.h" header file from information
** extracted out of the "manifest", "manifest.uuid", and "VERSION" files.
** Call this program with three arguments:
**
**     ./a.out manifest.uuid manifest VERSION
**
** Note that the manifest.uuid and manifest files are generated by Fossil.
**
** The output becomes the "VERSION.h" file.  The output is a C-language
** header that contains #defines for various properties of the build:
**
**   MANIFEST_UUID              These values are text strings that
**   MANIFEST_VERSION           identify the Fossil check-in to which
**                              the source tree belongs.  They do not
**                              take into account any uncommitted edits.
**
**   FOSSIL_BUILD_HASH          A hexadecimal string that is a strong hash
**                              of the MANIFEST_UUID together with the
**                              current time of the build.  We normally want
**                              this to be different on each build, as the
**                              value is used to expire ETag: fields in
**                              HTTP requests.  But if you need to do
**                              repeatable byte-for-byte identical builds,
**                              add the -DFOSSIL_BUILD_EPOCH=n option.
**
**   MANIFEST_DATE              The date/time of the source-code check-in
**   MANIFEST_YEAR              in various formats.
**   MANIFEST_NUMERIC_DATE
**   MANIFEST_NUMERIC_TIME
**
**   RELEASE_VERSION            The version number (from the VERSION source
**   RELEASE_VERSION_NUMBER     file) in various format.
**   RELEASE_RESOURCE_VERSION
**
** New #defines may be added in the future.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>

#if defined(_MSC_VER) && (_MSC_VER < 1800) /* MSVS 2013 */
#  define strtoll _strtoi64
#endif

static FILE *open_for_reading(const char *zFilename){
  FILE *f = fopen(zFilename, "r");
  if( f==0 ){
    fprintf(stderr, "cannot open \"%s\" for reading\n", zFilename);
    exit(1);
  }
  return f;
}

/*
** Given an arbitrary-length input string key zIn, generate
** an N-byte hexadecimal hash of that string into zOut.
*/
static void hash(const char *zIn, int N, char *zOut){
  unsigned char i, j, t;
  int m, n;
  unsigned char s[256];
  for(m=0; m<256; m++){ s[m] = m; }
  for(j=0, m=n=0; m<256; m++, n++){
    j += s[m] + zIn[n];
    if( zIn[n]==0 ){ n = -1; }
    t = s[j];
    s[j] = s[m];
    s[m] = t;
  }
  i = j = 0;
  for(n=0; n<N-2; n+=2){
    i++;
    t = s[i];
    j += t;
    s[i] = s[j];
    s[j] = t;
    t += s[i];
    zOut[n] = "0123456789abcdef"[(t>>4)&0xf];
    zOut[n+1] = "0123456789abcdef"[t&0xf];
  }
  zOut[n] = 0;
}

/* Local strcpy() clone to squelch an unwarranted warning from OpenBSD. */
static void local_strcpy(char *dest, const char *src){
  while( (*(dest++) = *(src++))!=0 ){}
}

int main(int argc, char *argv[]){
    FILE *m,*u,*v;
    char *z;
#if defined(__DMC__)            /* e.g. 0x857 */
    int i = 0;
#endif
    int j = 0, x = 0, d = 0;
    size_t n;
    int vn[3];
    char b[1000];
    char vx[1000];
    if( argc!=4 ){
      fprintf(stderr, "Usage: %s manifest.uuid manifest VERSION\n", argv[0]);
      exit(1);
    }
    memset(b,0,sizeof(b));
    memset(vx,0,sizeof(vx));
    u = open_for_reading(argv[1]);
    if( fgets(b, sizeof(b)-1,u)==0 ){
      fprintf(stderr, "malformed manifest.uuid file: %s\n", argv[1]);
      exit(1);
    }
    fclose(u);
    for(z=b; z[0] && z[0]!='\r' && z[0]!='\n'; z++){}
    *z = 0;
    printf("#define MANIFEST_UUID \"%s\"\n",b);
    printf("#define MANIFEST_VERSION \"[%10.10s]\"\n",b);
    n = strlen(b);
    if( n + 50 < sizeof(b) ){
#ifdef FOSSIL_BUILD_EPOCH
#define str(s) #s
      snprintf(b+n, sizeof(b)-n,
               "%d", (int)strtoll(str(FOSSIL_BUILD_EPOCH), 0, 10));
#else
      const char *zEpoch = getenv("SOURCE_DATE_EPOCH");
      if( zEpoch && isdigit(zEpoch[0]) ){
        snprintf(b+n, sizeof(b)-n, "%d", (int)strtoll(zEpoch, 0, 10));
      }else{
        snprintf(b+n, sizeof(b)-n, "%d", (int)time(0));
      }
#endif
      hash(b,33,vx);
      printf("#define FOSSIL_BUILD_HASH \"%s\"\n", vx);
    }
    m = open_for_reading(argv[2]);
    while(b ==  fgets(b, sizeof(b)-1,m)){
      if(0 == strncmp("D ",b,2)){
        int k, n;
        char zDateNum[30];
        printf("#define MANIFEST_DATE \"%.10s %.8s\"\n",b+2,b+13);
        printf("#define MANIFEST_YEAR \"%.4s\"\n",b+2);
        n = 0;
        for(k=0; k<10; k++){
          if( isdigit(b[k+2]) ) zDateNum[n++] = b[k+2];
        }
        zDateNum[n] = 0;
        printf("#define MANIFEST_NUMERIC_DATE %s\n", zDateNum);
        n = 0;
        for(k=0; k<8; k++){
          if( isdigit(b[k+13]) ) zDateNum[n++] = b[k+13];
        }
        zDateNum[n] = 0;
        for(k=0; zDateNum[k]=='0'; k++){}
        printf("#define MANIFEST_NUMERIC_TIME %s\n", zDateNum+k);
      }
    }
    fclose(m);
    v = open_for_reading(argv[3]);
    if( fgets(b, sizeof(b)-1,v)==0 ){
      fprintf(stderr, "malformed VERSION file: %s\n", argv[3]);
      exit(1);
    }
    fclose(v);
    for(z=b; z[0] && z[0]!='\r' && z[0]!='\n'; z++){}
    *z = 0;
    printf("#define RELEASE_VERSION \"%s\"\n", b);
    z=b;
    vn[0] = vn[1] = vn[2] = 0;
    while(1){
      if( z[0]>='0' && z[0]<='9' ){
        x = x*10 + z[0] - '0';
      }else{
        if( j<3 ) vn[j++] = x;
        x = 0;
        if( z[0]==0 ) break;
      }
      z++;
    }
    for(z=vx; z[0]=='0'; z++){}
    printf("#define RELEASE_VERSION_NUMBER %d%02d%02d\n", vn[0], vn[1], vn[2]);
    memset(vx,0,sizeof(vx));
    local_strcpy(vx,b);
    for(z=vx; z[0]; z++){
      if( z[0]=='-' ){
        z[0] = 0;
        break;
      }
      if( z[0]!='.' ) continue;
      if ( d<3 ){
        z[0] = ',';
        d++;
      }else{
        z[0] = '\0';
        break;
      }
    }
    printf("#define RELEASE_RESOURCE_VERSION %s", vx);
    while( d<3 ){ printf(",0"); d++; }
    printf("\n");
#if defined(__DMC__)            /* e.g. 0x857 */
    d = (__DMC__ & 0xF00) >> 8; /* major */
    x = (__DMC__ & 0x0F0) >> 4; /* minor */
    i = (__DMC__ & 0x00F);      /* revision */
    printf("#define COMPILER_VERSION \"%d.%d.%d\"\n", d, x, i);
#elif defined(__POCC__)   /* e.g. 700 */
    d = (__POCC__ / 100); /* major */
    x = (__POCC__ % 100); /* minor */
    printf("#define COMPILER_VERSION \"%d.%02d\"\n", d, x);
#elif defined(_MSC_VER)   /* e.g. 1800 */
    /* _MSC_FULL_VER also defined, e.g. 193030709 */
    d = (_MSC_VER / 100); /* major */
    x = (_MSC_VER % 100); /* minor */
    printf("#define COMPILER_VERSION \"%d.%02d.", d, x);
    printf("%05d\"\n",(int)(_MSC_FULL_VER % 100000)); /* build (patch) */
#endif
    return 0;
}
Added tools/skintxt2config.c.



























































































































































































































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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*
** Copyright (c) 2021 Stephan Beal (https://wanderinghorse.net/home/stephan/)
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
*******************************************************************************
**
** This application reads in Fossil SCM skin configuration files and emits
** them in a form suitable for importing directly into a fossil database
** using the (fossil config import) command.
**
** As input it requires one or more skin configuration files (css.txt,
** header.txt, footer.txt, details.txt, js.txt) and all output goes to
** stdout unless redirected using the -o FILENAME flag.
**
** Run it with no arguments or one of (help, --help, -?) for help text.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <stdarg.h>

static struct App_ {
  const char * argv0;
  time_t now;
  FILE * ostr;
} App = {
0, 0, 0
};

static void err(const char *zFmt, ...){
  va_list vargs;
  va_start(vargs, zFmt);
  fputs("ERROR: ",stderr);
  vfprintf(stderr, zFmt, vargs);
  fputc('\n', stderr);
  va_end(vargs);
}

static void app_usage(int isErr){
  FILE * const ios = isErr ? stderr : stdout;
  fprintf(ios, "Usage: %s ?OPTIONS? input-filename...\n\n",
          App.argv0);
  fprintf(ios, "Each filename must be one file which is conventionally "
          "part of a Fossil SCM skin set:\n"
          "  css.txt, header.txt, footer.txt, details.txt, js.txt\n");
  fprintf(ios, "\nOptions:\n");
  fprintf(ios, "\n\t-o FILENAME = send output to the given file. "
          "'-' means stdout (the default).\n");
  fputc('\n', ios);
}

/*
** Reads file zFilename, stores its contents in *zContent, and sets the
** length of its contents to *nContent.
**
** Returns 0 on success. On error, *zContent and *nContent are not
** modified and it may emit a message describing the problem.
*/
int read_file(char const *zFilename, unsigned char ** zContent,
              int * nContent){
  long fpos;
  int rc = 0;
  unsigned char * zMem = 0;
  FILE * f = fopen(zFilename, "rb");
  if(!f){
    err("Cannot open file %s. Errno=%d", zFilename, errno);
    return errno;
  }
  fseek(f, 0L, SEEK_END);
  rc = errno;
  if(rc){
    err("Cannot seek() file %s. Errno=%d", zFilename, rc);
    goto end;
  }
  fpos = ftell(f);
  fseek(f, 0L, SEEK_SET);
  zMem = (unsigned char *)malloc((size_t)fpos + 1);
  if(!zMem){
    err("Malloc failed.");
    rc = ENOMEM;
    goto end;
  }
  zMem[fpos] = 0;
  if(fpos && (size_t)1 != fread(zMem, (size_t)fpos, 1, f)){
    rc = EIO;
    err("Error #%d reading file %s", rc, zFilename);
    goto end;
  }
  end:
  fclose(f);
  if(rc){
    free(zMem);
  }else{
    *zContent = zMem;
    *nContent = fpos;
  }
  return rc;
}

/*
** Expects zFilename to be one of the conventional skin filename
** parts. This routine converts it to config format and emits it to
** App.ostr.
*/
int dispatch_file(char const *zFilename){
  const char * zKey = 0;
  int nContent = 0, nContent2 = 0, nOut = 0, nTime = 0, rc = 0;
  time_t theTime = App.now;
  unsigned char * zContent = 0;
  unsigned char * z = 0;
  if(strstr(zFilename, "css.txt")){
    zKey = "css";
  }else if(strstr(zFilename, "header.txt")){
    zKey = "header";
  }else if(strstr(zFilename, "footer.txt")){
    zKey = "footer";
  }else if(strstr(zFilename, "details.txt")){
    zKey = "details";
  }else if(strstr(zFilename, "js.txt")){
    zKey = "js";
  }else {
    err("Cannot determine skin part from filename: %s", zFilename);
    return 1;
  }
  rc = read_file(zFilename, &zContent, &nContent);
  if(rc) return rc;
  for( z = zContent; z < zContent + nContent; ++z ){
    /* Count file content length with ' characters doubled */
    nContent2 += ('\'' == *z) ? 2 : 1;
  }
  while(theTime > 0){/* # of digits in time */
    ++nTime;
    theTime /= 10;
  }
  fprintf(App.ostr, "config /config %d\n",
          (int)(nTime + 12/*"value"+spaces+quotes*/
                + (int)strlen(zKey) + nContent2));
  fprintf(App.ostr, "%d '%s' value '", (int)App.now, zKey);
  for( z = zContent; z < zContent + nContent; ++z ){
    /* Emit file content with ' characters doubled */
    if('\'' == (char)*z){
      fputc('\'', App.ostr);
    }
    fputc((char)*z, App.ostr);
  }
  free(zContent);
  fprintf(App.ostr, "'\n");
  return 0;
}

int main(int argc, char const * const * argv){
  int rc = 0, i ;
  App.argv0 = argv[0];
  App.ostr = stdout;
  if(argc<2){
    app_usage(1);
    rc = 1;
    goto end;
  }
  App.now = time(0);
  for( i = 1; i < argc; ++i ){
    const char * zArg = argv[i];
    if(0==strcmp(zArg,"help") ||
       0==strcmp(zArg,"--help") ||
       0==strcmp(zArg,"-?")){
      app_usage(0);
      rc = 0;
      break;
    }else if(0==strcmp(zArg,"-o")){
      /* -o OUTFILE (- == stdout) */
      ++i;
      if(i==argc){
        err("Missing filename for -o flag");
        rc = 1;
        break;
      }else{
        const char *zOut = argv[i];
        if(App.ostr != stdout){
          err("Cannot specify -o more than once.");
          rc = 1;
          break;
        }
        if(0!=strcmp("-",zOut)){
          FILE * o = fopen(zOut, "wb");
          if(!o){
            err("Could not open file %s for writing. Errno=%d",
                zOut, errno);
            rc = errno;
            break;
          }
          App.ostr = o;
        }
      }
    }else if('-' == zArg[0]){
      err("Unhandled argument: %s", zArg);
      rc = 1;
      break;
    }else{
      rc = dispatch_file(zArg);
      if(rc) break;
    }
  }
  end:
  if(App.ostr != stdout){
    fclose(App.ostr);
  }
  return rc ? EXIT_FAILURE : EXIT_SUCCESS;
}
Added tools/sqlcompattest.c.

























































































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/*
** Copyright (c) 2019 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file is NOT part of the Fossil executable. It is called from
** auto.def in the autosetup system.
**
** This file contains a test program used by ../configure with the
** the --disable-internal-sqlite option to determine whether or
** not the system SQLite library is sufficient to support Fossil.
**
** This must be compiled with -D MINIMUM_SQLITE_VERSION set in auto.def.
**
** It is preferred to statically link Fossil with the sqlite3.c source
** file that is part of the source tree and not use any SQLite shared
** library that is included with the system.  But some packagers do not
** like to do this.  Hence, we provide the option to link Fossil against
** the system SQLite shared library.  But Fossil is very particular about
** the version and build options for SQLite.  Unless a recent version of
** SQLite is available, and unless that SQLite is built using some
** non-default features, the system library won't meet the needs of
** Fossil.  This program attempts to determine if the system library
** SQLite is sufficient for Fossil.
**
** Compile this program, linking it against the system SQLite library,
** and run it.  If it returns with a zero exit code, then all is well.
** But if it returns a non-zero exit code, then the system SQLite library
** lacks some capability that Fossil uses.  A message on stdout describes
** the missing feature.
*/
#include "sqlite3.h"
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv){

#if !defined(MINIMUM_SQLITE_VERSION)
#error "Must set -DMINIMUM_SQLITE_VERSION=nn.nn.nn in auto.def"
#endif

#define QUOTE(VAL) #VAL
#define STR(MACRO_VAL) QUOTE(MACRO_VAL)

  char zMinimumVersionNumber[8]="nn.nn.nn";
  strncpy((char *)&zMinimumVersionNumber,STR(MINIMUM_SQLITE_VERSION),
          sizeof(zMinimumVersionNumber));

  long major, minor, release, version;
  sscanf(zMinimumVersionNumber, "%li.%li.%li", &major, &minor, &release);
  version=(major*1000000)+(minor*1000)+release;

  int i;
  static const char *zRequiredOpts[] = {
    "ENABLE_FTS4",        /* Required for repository search */
    "ENABLE_DBSTAT_VTAB", /* Required by /repo-tabsize page */
  };

  /* Check minimum SQLite version number */
  if( sqlite3_libversion_number()<version ){
    printf("found system SQLite version %s but need %s or later, "
           "consider removing --disable-internal-sqlite\n",
            sqlite3_libversion(),STR(MINIMUM_SQLITE_VERSION));
    return 1;
  }

  for(i=0; i<sizeof(zRequiredOpts)/sizeof(zRequiredOpts[0]); i++){
    if( !sqlite3_compileoption_used(zRequiredOpts[i]) ){
      printf("system SQLite library omits required build option -DSQLITE_%s\n",
             zRequiredOpts[i]);
      return 1;
    }
  }

  /* Success! */
  return 0;
}
Added tools/translate.c.



































































































































































































































































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/*
** Copyright (c) 2002 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)
**
** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** SYNOPSIS:
**
** Input lines that begin with the "@" character are translated into
** either cgi_printf() statements or string literals and the
** translated code is written on standard output.
**
** The problem this program is attempt to solve is as follows:  When
** writing CGI programs in C, we typically want to output a lot of HTML
** text to standard output.  In pure C code, this involves doing a
** printf() with a big string containing all that text.  But we have
** to insert special codes (ex: \n and \") for many common characters,
** which interferes with the readability of the HTML.
**
** This tool allows us to put raw HTML, without the special codes, in
** the middle of a C program.  This program then translates the text
** into standard C by inserting all necessary backslashes and other
** punctuation.
**
** Enhancement #1:
**
** If the last non-whitespace character prior to the first "@" of a
** @-block is "=" or "," then the @-block is a string literal initializer
** rather than text that is to be output via cgi_printf().  Render it
** as such.
**
** Enhancement #2:
**
** Comments of the form:  "|* @-comment: CC" (where "|" is really "/")
** cause CC to become a comment character for the @-substitution.
** Typical values for CC are "--" (for SQL text) or "#" (for Tcl script)
** or "//" (for C++ code).  Lines of subsequent @-blocks that begin with
** CC are omitted from the output.
**
** Enhancement #3:
**
** If a non-enhancement #1 line ends in backslash, the backslash and the
** newline (\n) are not included in the argument to cgi_printf().  This
** is used to split one long output line across multiple source lines.
*/
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>

/*
** Space to hold arguments at the end of the cgi_printf()
*/
#define MX_ARG_SP 10000
static char zArg[MX_ARG_SP];
static int nArg = 0;

/*
** True if we are currently in a cgi_printf()
*/
static int inPrint = 0;

/*
** True if we are currently doing a free string
*/
static int inStr = 0;

/*
** Name of files being processed
*/
static const char *zInFile = "(stdin)";

/*
** Terminate an active cgi_printf() or free string
*/
static void end_block(FILE *out){
  if( inPrint ){
    zArg[nArg] = 0;
    fprintf(out, "%s);\n", zArg);
    nArg = 0;
    inPrint = 0;
  }
}

/*
** Translate the input stream into the output stream
*/
static void trans(FILE *in, FILE *out){
  int i, j, k;          /* Loop counters */
  char c1, c2;          /* Characters used to start a comment */
  int lastWasEq = 0;    /* True if last non-whitespace character was "=" */
  int lastWasComma = 0; /* True if last non-whitespace character was "," */
  int lineNo = 0;       /* Line number */
  char zLine[2000];     /* A single line of input */
  char zOut[4000];      /* The input line translated into appropriate output */

  c1 = c2 = '-';
  while( fgets(zLine, sizeof(zLine), in) ){
    lineNo++;
    for(i=0; zLine[i] && isspace(zLine[i]); i++){}
    if( zLine[i]!='@' ){
      if( inPrint || inStr ) end_block(out);
      fprintf(out,"%s",zLine);
                       /* 0123456789 12345 */
      if( strncmp(zLine, "/* @-comment: ", 14)==0 ){
        c1 = zLine[14];
        c2 = zLine[15];
      }
      i += strlen(&zLine[i]);
      while( i>0 && isspace(zLine[i-1]) ){ i--; }
      lastWasEq    = i>0 && zLine[i-1]=='=';
      lastWasComma = i>0 && zLine[i-1]==',';
    }else if( lastWasEq || lastWasComma){
      /* If the last non-whitespace character before the first @ was
      ** an "="(var init/set) or a ","(const definition in list) then
      ** generate a string literal.  But skip comments
      ** consisting of all text between c1 and c2 (default "--")
      ** and end of line.
      */
      int indent, omitline;
      char *zNewline = "\\n";
      i++;
      if( isspace(zLine[i]) ){ i++; }
      indent = i - 2;
      if( indent<0 ) indent = 0;
      omitline = 0;
      for(j=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){
        if( zLine[i]==c1 && (c2==' ' || zLine[i+1]==c2) ){
           omitline = 1; break;
        }
        if( zLine[i]=='\\' && (zLine[i+1]==0 || zLine[i+1]=='\r'
                                 || zLine[i+1]=='\n') ){
          zLine[i] = 0;
          zNewline = "";
          /* fprintf(stderr, "%s:%d: omit newline\n", zInFile, lineNo); */
          break;
        }
        if( zLine[i]=='\\' || zLine[i]=='"' ){ zOut[j++] = '\\'; }
        zOut[j++] = zLine[i];
      }
      if( zNewline[0] ) while( j>0 && isspace(zOut[j-1]) ){ j--; }
      zOut[j] = 0;
      if( j<=0 && omitline ){
        fprintf(out,"\n");
      }else{
        fprintf(out,"%*s\"%s%s\"\n",indent, "", zOut, zNewline);
      }
    }else{
      /* Otherwise (if the last non-whitespace was not '=') then generate a
      ** cgi_printf() statement whose format is the text following the '@'.
      ** Substrings of the form "%C(...)" (where C is any sequence of characters
      ** other than \000 and '(') will put "%C" in the format and add the
      ** "(...)" as an argument to the cgi_printf call.  Each '*' character
      ** present in C (max two) causes one more "(...)" sequence to be consumed.
      ** For example, "%*.*d(4)(2)(1)" converts to "%*.*d" with arguments "4",
      ** "2", and "1", which will be used as the field width, precision, and
      ** value, respectively, producing a final formatted result of "  01".
      */
      const char *zNewline = "\\n";
      int indent;
      int nC;
      int nParam;
      char c;
      i++;
      if( isspace(zLine[i]) ){ i++; }
      indent = i;
      for(j=0; zLine[i] && zLine[i]!='\r' && zLine[i]!='\n'; i++){
        if( zLine[i]=='\\' && (!zLine[i+1] || zLine[i+1]=='\r'
                                           || zLine[i+1]=='\n') ){
          zNewline = "";
          break;
        }
        if( zLine[i]=='"' || zLine[i]=='\\' ){ zOut[j++] = '\\'; }
        zOut[j++] = zLine[i];
        if( zLine[i]!='%' || zLine[i+1]=='%' || zLine[i+1]==0 ) continue;
        nParam=1;
        for(nC=1; zLine[i+nC] && zLine[i+nC]!='('; nC++){
          if( zLine[i+nC]=='*' && nParam < 3 ) nParam++;
        }
        if( zLine[i+nC]!='(' || !isalpha(zLine[i+nC-1]) ) continue;
        while( --nC ) zOut[j++] = zLine[++i];
        do{
          zArg[nArg++] = ',';
          k = 0; i++;
          if( zLine[i]!='(' ) break;
          while( (c = zLine[i])!=0 ){
            zArg[nArg++] = c;
            if( c==')' ){
              k--;
              if( k==0 ) break;
            }else if( c=='(' ){
              k++;
            }
            i++;
          }
        }while( --nParam );
      }
      zOut[j] = 0;
      if( !inPrint ){
        fprintf(out,"%*scgi_printf(\"%s%s\"",indent-2,"", zOut, zNewline);
        inPrint = 1;
      }else{
        fprintf(out,"\n%*s\"%s%s\"",indent+5, "", zOut, zNewline);
      }
    }
  }
}

static void print_source_ref(const char *zSrcFile, FILE *out){
/* Set source line reference to the original source file.
 * This makes compiler show the original file name in the compile error
 * messages, instead of referring to the translated file.
 * NOTE: This somewhat complicates stepping in debugger, as the resuling
 * code would not match the referenced sources.
 */
#ifndef FOSSIL_DEBUG
  const char *arg;
  if( !*zSrcFile ){
    return;
  }
  fprintf(out,"#line 1 \"");
  for(arg=zSrcFile; *arg; arg++){
    if( *arg!='\\' ){
      fprintf(out,"%c", *arg);
    }else{
      fprintf(out,"\\\\");
    }
  }
  fprintf(out,"\"\n");
#endif
}

int main(int argc, char **argv){
  if( argc==2 ){
    FILE *in = fopen(argv[1], "r");
    if( in==0 ){
      fprintf(stderr,"can not open %s\n", argv[1]);
      exit(1);
    }
    zInFile = argv[1];
    print_source_ref(zInFile, stdout);
    trans(in, stdout);
    fclose(in);
  }else{
    trans(stdin, stdout);
  }
  return 0;
}
Added win/Makefile.dmc.























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
B      = ..
SRCDIR = $B\src
SRCDIR_extsrc = $B\extsrc
SRCDIR_tools = $B\tools
OBJDIR = .
O      = .obj
E      = .exe


# Maybe DMDIR, SSL or INCL needs adjustment
DMDIR  = c:\DM
INCL   = -I. -I$(SRCDIR) -I$(SRCDIR_extsrc) -I$B\win\include -I$(DMDIR)\extra\include

#SSL   =  -DFOSSIL_ENABLE_SSL=1
SSL    =

CFLAGS = -o
BCC    = $(DMDIR)\bin\dmc $(CFLAGS)
TCC    = $(DMDIR)\bin\dmc $(CFLAGS) $(DMCDEF) $(SSL) $(INCL)
LIBS   = $(DMDIR)\extra\lib\ zlib wsock32 advapi32 dnsapi

SQLITE_OPTIONS = -DNDEBUG=1 -DSQLITE_DQS=0 -DSQLITE_THREADSAFE=0 -DSQLITE_DEFAULT_MEMSTATUS=0 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS -DSQLITE_OMIT_DECLTYPE -DSQLITE_OMIT_DEPRECATED -DSQLITE_OMIT_PROGRESS_CALLBACK -DSQLITE_OMIT_SHARED_CACHE -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_MAX_EXPR_DEPTH=0 -DSQLITE_ENABLE_LOCKING_STYLE=0 -DSQLITE_DEFAULT_FILE_FORMAT=4 -DSQLITE_ENABLE_EXPLAIN_COMMENTS -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_DBSTAT_VTAB -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_STMTVTAB -DSQLITE_HAVE_ZLIB -DSQLITE_ENABLE_DBPAGE_VTAB -DSQLITE_TRUSTED_SCHEMA=0 -DHAVE_USLEEP

SHELL_OPTIONS = -DNDEBUG=1 -DSQLITE_DQS=0 -DSQLITE_THREADSAFE=0 -DSQLITE_DEFAULT_MEMSTATUS=0 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS -DSQLITE_OMIT_DECLTYPE -DSQLITE_OMIT_DEPRECATED -DSQLITE_OMIT_PROGRESS_CALLBACK -DSQLITE_OMIT_SHARED_CACHE -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_MAX_EXPR_DEPTH=0 -DSQLITE_ENABLE_LOCKING_STYLE=0 -DSQLITE_DEFAULT_FILE_FORMAT=4 -DSQLITE_ENABLE_EXPLAIN_COMMENTS -DSQLITE_ENABLE_FTS4 -DSQLITE_ENABLE_DBSTAT_VTAB -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_STMTVTAB -DSQLITE_HAVE_ZLIB -DSQLITE_ENABLE_DBPAGE_VTAB -DSQLITE_TRUSTED_SCHEMA=0 -DHAVE_USLEEP -Dmain=sqlite3_shell -DSQLITE_SHELL_IS_UTF8=1 -DSQLITE_OMIT_LOAD_EXTENSION=1 -DUSE_SYSTEM_SQLITE=$(USE_SYSTEM_SQLITE) -DSQLITE_SHELL_DBNAME_PROC=sqlcmd_get_dbname -DSQLITE_SHELL_INIT_PROC=sqlcmd_init_proc -Daccess=file_access -Dsystem=fossil_system -Dgetenv=fossil_getenv -Dfopen=fossil_fopen

PIKCHR_OPTIONS = -DPIKCHR_TOKEN_LIMIT=10000

SRC   = add_.c ajax_.c alerts_.c allrepo_.c attach_.c backlink_.c backoffice_.c bag_.c bisect_.c blob_.c branch_.c browse_.c builtin_.c bundle_.c cache_.c capabilities_.c captcha_.c cgi_.c chat_.c checkin_.c checkout_.c clearsign_.c clone_.c color_.c comformat_.c configure_.c content_.c cookies_.c db_.c delta_.c deltacmd_.c deltafunc_.c descendants_.c diff_.c diffcmd_.c dispatch_.c doc_.c encode_.c etag_.c event_.c export_.c extcgi_.c file_.c fileedit_.c finfo_.c foci_.c forum_.c fshell_.c fusefs_.c fuzz_.c glob_.c graph_.c gzip_.c hname_.c hook_.c http_.c http_socket_.c http_ssl_.c http_transport_.c import_.c info_.c interwiki_.c json_.c json_artifact_.c json_branch_.c json_config_.c json_diff_.c json_dir_.c json_finfo_.c json_login_.c json_query_.c json_report_.c json_status_.c json_tag_.c json_timeline_.c json_user_.c json_wiki_.c leaf_.c loadctrl_.c login_.c lookslike_.c main_.c manifest_.c markdown_.c markdown_html_.c md5_.c merge_.c merge3_.c moderate_.c name_.c patch_.c path_.c piechart_.c pikchrshow_.c pivot_.c popen_.c pqueue_.c printf_.c publish_.c purge_.c rebuild_.c regexp_.c repolist_.c report_.c rss_.c schema_.c search_.c security_audit_.c setup_.c setupuser_.c sha1_.c sha1hard_.c sha3_.c shun_.c sitemap_.c skins_.c smtp_.c sqlcmd_.c stash_.c stat_.c statrep_.c style_.c sync_.c tag_.c tar_.c terminal_.c th_main_.c timeline_.c tkt_.c tktsetup_.c undo_.c unicode_.c unversioned_.c update_.c url_.c user_.c utf8_.c util_.c verify_.c vfile_.c wiki_.c wikiformat_.c winfile_.c winhttp_.c xfer_.c xfersetup_.c zip_.c

OBJ   = $(OBJDIR)\add$O $(OBJDIR)\ajax$O $(OBJDIR)\alerts$O $(OBJDIR)\allrepo$O $(OBJDIR)\attach$O $(OBJDIR)\backlink$O $(OBJDIR)\backoffice$O $(OBJDIR)\bag$O $(OBJDIR)\bisect$O $(OBJDIR)\blob$O $(OBJDIR)\branch$O $(OBJDIR)\browse$O $(OBJDIR)\builtin$O $(OBJDIR)\bundle$O $(OBJDIR)\cache$O $(OBJDIR)\capabilities$O $(OBJDIR)\captcha$O $(OBJDIR)\cgi$O $(OBJDIR)\chat$O $(OBJDIR)\checkin$O $(OBJDIR)\checkout$O $(OBJDIR)\clearsign$O $(OBJDIR)\clone$O $(OBJDIR)\color$O $(OBJDIR)\comformat$O $(OBJDIR)\configure$O $(OBJDIR)\content$O $(OBJDIR)\cookies$O $(OBJDIR)\db$O $(OBJDIR)\delta$O $(OBJDIR)\deltacmd$O $(OBJDIR)\deltafunc$O $(OBJDIR)\descendants$O $(OBJDIR)\diff$O $(OBJDIR)\diffcmd$O $(OBJDIR)\dispatch$O $(OBJDIR)\doc$O $(OBJDIR)\encode$O $(OBJDIR)\etag$O $(OBJDIR)\event$O $(OBJDIR)\export$O $(OBJDIR)\extcgi$O $(OBJDIR)\file$O $(OBJDIR)\fileedit$O $(OBJDIR)\finfo$O $(OBJDIR)\foci$O $(OBJDIR)\forum$O $(OBJDIR)\fshell$O $(OBJDIR)\fusefs$O $(OBJDIR)\fuzz$O $(OBJDIR)\glob$O $(OBJDIR)\graph$O $(OBJDIR)\gzip$O $(OBJDIR)\hname$O $(OBJDIR)\hook$O $(OBJDIR)\http$O $(OBJDIR)\http_socket$O $(OBJDIR)\http_ssl$O $(OBJDIR)\http_transport$O $(OBJDIR)\import$O $(OBJDIR)\info$O $(OBJDIR)\interwiki$O $(OBJDIR)\json$O $(OBJDIR)\json_artifact$O $(OBJDIR)\json_branch$O $(OBJDIR)\json_config$O $(OBJDIR)\json_diff$O $(OBJDIR)\json_dir$O $(OBJDIR)\json_finfo$O $(OBJDIR)\json_login$O $(OBJDIR)\json_query$O $(OBJDIR)\json_report$O $(OBJDIR)\json_status$O $(OBJDIR)\json_tag$O $(OBJDIR)\json_timeline$O $(OBJDIR)\json_user$O $(OBJDIR)\json_wiki$O $(OBJDIR)\leaf$O $(OBJDIR)\loadctrl$O $(OBJDIR)\login$O $(OBJDIR)\lookslike$O $(OBJDIR)\main$O $(OBJDIR)\manifest$O $(OBJDIR)\markdown$O $(OBJDIR)\markdown_html$O $(OBJDIR)\md5$O $(OBJDIR)\merge$O $(OBJDIR)\merge3$O $(OBJDIR)\moderate$O $(OBJDIR)\name$O $(OBJDIR)\patch$O $(OBJDIR)\path$O $(OBJDIR)\piechart$O $(OBJDIR)\pikchrshow$O $(OBJDIR)\pivot$O $(OBJDIR)\popen$O $(OBJDIR)\pqueue$O $(OBJDIR)\printf$O $(OBJDIR)\publish$O $(OBJDIR)\purge$O $(OBJDIR)\rebuild$O $(OBJDIR)\regexp$O $(OBJDIR)\repolist$O $(OBJDIR)\report$O $(OBJDIR)\rss$O $(OBJDIR)\schema$O $(OBJDIR)\search$O $(OBJDIR)\security_audit$O $(OBJDIR)\setup$O $(OBJDIR)\setupuser$O $(OBJDIR)\sha1$O $(OBJDIR)\sha1hard$O $(OBJDIR)\sha3$O $(OBJDIR)\shun$O $(OBJDIR)\sitemap$O $(OBJDIR)\skins$O $(OBJDIR)\smtp$O $(OBJDIR)\sqlcmd$O $(OBJDIR)\stash$O $(OBJDIR)\stat$O $(OBJDIR)\statrep$O $(OBJDIR)\style$O $(OBJDIR)\sync$O $(OBJDIR)\tag$O $(OBJDIR)\tar$O $(OBJDIR)\terminal$O $(OBJDIR)\th_main$O $(OBJDIR)\timeline$O $(OBJDIR)\tkt$O $(OBJDIR)\tktsetup$O $(OBJDIR)\undo$O $(OBJDIR)\unicode$O $(OBJDIR)\unversioned$O $(OBJDIR)\update$O $(OBJDIR)\url$O $(OBJDIR)\user$O $(OBJDIR)\utf8$O $(OBJDIR)\util$O $(OBJDIR)\verify$O $(OBJDIR)\vfile$O $(OBJDIR)\wiki$O $(OBJDIR)\wikiformat$O $(OBJDIR)\winfile$O $(OBJDIR)\winhttp$O $(OBJDIR)\xfer$O $(OBJDIR)\xfersetup$O $(OBJDIR)\zip$O $(OBJDIR)\shell$O $(OBJDIR)\sqlite3$O $(OBJDIR)\th$O $(OBJDIR)\th_lang$O


RC=$(DMDIR)\bin\rcc
RCFLAGS=-32 -w1 -I$(SRCDIR) /D__DMC__

APPNAME = $(OBJDIR)\fossil$(E)

all: $(APPNAME)

$(APPNAME) : translate$E mkindex$E codecheck1$E headers  $(OBJ) $(OBJDIR)\link
	cd $(OBJDIR)
	codecheck1$E $(SRC)
	$(DMDIR)\bin\link @link

$(OBJDIR)\fossil.res:	$B\win\fossil.rc
	$(RC) $(RCFLAGS) -o$@ $**

$(OBJDIR)\link: $B\win\Makefile.dmc $(OBJDIR)\fossil.res
	+echo add ajax alerts allrepo attach backlink backoffice bag bisect blob branch browse builtin bundle cache capabilities captcha cgi chat checkin checkout clearsign clone color comformat configure content cookies db delta deltacmd deltafunc descendants diff diffcmd dispatch doc encode etag event export extcgi file fileedit finfo foci forum fshell fusefs fuzz glob graph gzip hname hook http http_socket http_ssl http_transport import info interwiki json json_artifact json_branch json_config json_diff json_dir json_finfo json_login json_query json_report json_status json_tag json_timeline json_user json_wiki leaf loadctrl login lookslike main manifest markdown markdown_html md5 merge merge3 moderate name patch path piechart pikchrshow pivot popen pqueue printf publish purge rebuild regexp repolist report rss schema search security_audit setup setupuser sha1 sha1hard sha3 shun sitemap skins smtp sqlcmd stash stat statrep style sync tag tar terminal th_main timeline tkt tktsetup undo unicode unversioned update url user utf8 util verify vfile wiki wikiformat winfile winhttp xfer xfersetup zip shell sqlite3 th th_lang > $@
	+echo fossil >> $@
	+echo fossil >> $@
	+echo $(LIBS) >> $@
	+echo. >> $@
	+echo fossil >> $@

translate$E: $(SRCDIR_tools)\translate.c
	$(BCC) -o$@ $**

makeheaders$E: $(SRCDIR_tools)\makeheaders.c
	$(BCC) -o$@ $**

mkindex$E: $(SRCDIR_tools)\mkindex.c
	$(BCC) -o$@ $**

mkbuiltin$E: $(SRCDIR_tools)\mkbuiltin.c
	$(BCC) -o$@ $**

mkversion$E: $(SRCDIR_tools)\mkversion.c
	$(BCC) -o$@ $**

codecheck1$E: $(SRCDIR_tools)\codecheck1.c
	$(BCC) -o$@ $**

$(OBJDIR)\shell$O : $(SRCDIR_extsrc)\shell.c
	$(TCC) -o$@ -c $(SHELL_OPTIONS) $(SQLITE_OPTIONS) $(SHELL_CFLAGS) $**

$(OBJDIR)\sqlite3$O : $(SRCDIR_extsrc)\sqlite3.c
	$(TCC) -o$@ -c $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $**

$(OBJDIR)\th$O : $(SRCDIR)\th.c
	$(TCC) -o$@ -c $**

$(OBJDIR)\th_lang$O : $(SRCDIR)\th_lang.c
	$(TCC) -o$@ -c $**

$(OBJDIR)\cson_amalgamation.h : $(SRCDIR_extsrc)\cson_amalgamation.h
	cp $@ $@

VERSION.h : mkversion$E $B\manifest.uuid $B\manifest $B\VERSION
	+$** > $@

page_index.h: mkindex$E $(SRC)
	+$** > $@

builtin_data.h:	mkbuiltin$E $(EXTRA_FILES)
	mkbuiltin$E --prefix $(SRCDIR)/ $(EXTRA_FILES) > $@

clean:
	-del $(OBJDIR)\*.obj
	-del *.obj *_.c *.h *.map

realclean:
	-del $(APPNAME) translate$E mkindex$E makeheaders$E mkversion$E codecheck1$E mkbuiltin$E

$(OBJDIR)\json$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_artifact$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_branch$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_config$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_diff$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_dir$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_finfo$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_login$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_query$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_report$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_status$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_tag$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_timeline$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_user$O : $(SRCDIR)\json_detail.h
$(OBJDIR)\json_wiki$O : $(SRCDIR)\json_detail.h


$(OBJDIR)\add$O : add_.c add.h
	$(TCC) -o$@ -c add_.c

add_.c : $(SRCDIR)\add.c
	+translate$E $** > $@

$(OBJDIR)\ajax$O : ajax_.c ajax.h
	$(TCC) -o$@ -c ajax_.c

ajax_.c : $(SRCDIR)\ajax.c
	+translate$E $** > $@

$(OBJDIR)\alerts$O : alerts_.c alerts.h
	$(TCC) -o$@ -c alerts_.c

alerts_.c : $(SRCDIR)\alerts.c
	+translate$E $** > $@

$(OBJDIR)\allrepo$O : allrepo_.c allrepo.h
	$(TCC) -o$@ -c allrepo_.c

allrepo_.c : $(SRCDIR)\allrepo.c
	+translate$E $** > $@

$(OBJDIR)\attach$O : attach_.c attach.h
	$(TCC) -o$@ -c attach_.c

attach_.c : $(SRCDIR)\attach.c
	+translate$E $** > $@

$(OBJDIR)\backlink$O : backlink_.c backlink.h
	$(TCC) -o$@ -c backlink_.c

backlink_.c : $(SRCDIR)\backlink.c
	+translate$E $** > $@

$(OBJDIR)\backoffice$O : backoffice_.c backoffice.h
	$(TCC) -o$@ -c backoffice_.c

backoffice_.c : $(SRCDIR)\backoffice.c
	+translate$E $** > $@

$(OBJDIR)\bag$O : bag_.c bag.h
	$(TCC) -o$@ -c bag_.c

bag_.c : $(SRCDIR)\bag.c
	+translate$E $** > $@

$(OBJDIR)\bisect$O : bisect_.c bisect.h
	$(TCC) -o$@ -c bisect_.c

bisect_.c : $(SRCDIR)\bisect.c
	+translate$E $** > $@

$(OBJDIR)\blob$O : blob_.c blob.h
	$(TCC) -o$@ -c blob_.c

blob_.c : $(SRCDIR)\blob.c
	+translate$E $** > $@

$(OBJDIR)\branch$O : branch_.c branch.h
	$(TCC) -o$@ -c branch_.c

branch_.c : $(SRCDIR)\branch.c
	+translate$E $** > $@

$(OBJDIR)\browse$O : browse_.c browse.h
	$(TCC) -o$@ -c browse_.c

browse_.c : $(SRCDIR)\browse.c
	+translate$E $** > $@

$(OBJDIR)\builtin$O : builtin_.c builtin.h
	$(TCC) -o$@ -c builtin_.c

builtin_.c : $(SRCDIR)\builtin.c
	+translate$E $** > $@

$(OBJDIR)\bundle$O : bundle_.c bundle.h
	$(TCC) -o$@ -c bundle_.c

bundle_.c : $(SRCDIR)\bundle.c
	+translate$E $** > $@

$(OBJDIR)\cache$O : cache_.c cache.h
	$(TCC) -o$@ -c cache_.c

cache_.c : $(SRCDIR)\cache.c
	+translate$E $** > $@

$(OBJDIR)\capabilities$O : capabilities_.c capabilities.h
	$(TCC) -o$@ -c capabilities_.c

capabilities_.c : $(SRCDIR)\capabilities.c
	+translate$E $** > $@

$(OBJDIR)\captcha$O : captcha_.c captcha.h
	$(TCC) -o$@ -c captcha_.c

captcha_.c : $(SRCDIR)\captcha.c
	+translate$E $** > $@

$(OBJDIR)\cgi$O : cgi_.c cgi.h
	$(TCC) -o$@ -c cgi_.c

cgi_.c : $(SRCDIR)\cgi.c
	+translate$E $** > $@

$(OBJDIR)\chat$O : chat_.c chat.h
	$(TCC) -o$@ -c chat_.c

chat_.c : $(SRCDIR)\chat.c
	+translate$E $** > $@

$(OBJDIR)\checkin$O : checkin_.c checkin.h
	$(TCC) -o$@ -c checkin_.c

checkin_.c : $(SRCDIR)\checkin.c
	+translate$E $** > $@

$(OBJDIR)\checkout$O : checkout_.c checkout.h
	$(TCC) -o$@ -c checkout_.c

checkout_.c : $(SRCDIR)\checkout.c
	+translate$E $** > $@

$(OBJDIR)\clearsign$O : clearsign_.c clearsign.h
	$(TCC) -o$@ -c clearsign_.c

clearsign_.c : $(SRCDIR)\clearsign.c
	+translate$E $** > $@

$(OBJDIR)\clone$O : clone_.c clone.h
	$(TCC) -o$@ -c clone_.c

clone_.c : $(SRCDIR)\clone.c
	+translate$E $** > $@

$(OBJDIR)\color$O : color_.c color.h
	$(TCC) -o$@ -c color_.c

color_.c : $(SRCDIR)\color.c
	+translate$E $** > $@

$(OBJDIR)\comformat$O : comformat_.c comformat.h
	$(TCC) -o$@ -c comformat_.c

comformat_.c : $(SRCDIR)\comformat.c
	+translate$E $** > $@

$(OBJDIR)\configure$O : configure_.c configure.h
	$(TCC) -o$@ -c configure_.c

configure_.c : $(SRCDIR)\configure.c
	+translate$E $** > $@

$(OBJDIR)\content$O : content_.c content.h
	$(TCC) -o$@ -c content_.c

content_.c : $(SRCDIR)\content.c
	+translate$E $** > $@

$(OBJDIR)\cookies$O : cookies_.c cookies.h
	$(TCC) -o$@ -c cookies_.c

cookies_.c : $(SRCDIR)\cookies.c
	+translate$E $** > $@

$(OBJDIR)\db$O : db_.c db.h
	$(TCC) -o$@ -c db_.c

db_.c : $(SRCDIR)\db.c
	+translate$E $** > $@

$(OBJDIR)\delta$O : delta_.c delta.h
	$(TCC) -o$@ -c delta_.c

delta_.c : $(SRCDIR)\delta.c
	+translate$E $** > $@

$(OBJDIR)\deltacmd$O : deltacmd_.c deltacmd.h
	$(TCC) -o$@ -c deltacmd_.c

deltacmd_.c : $(SRCDIR)\deltacmd.c
	+translate$E $** > $@

$(OBJDIR)\deltafunc$O : deltafunc_.c deltafunc.h
	$(TCC) -o$@ -c deltafunc_.c

deltafunc_.c : $(SRCDIR)\deltafunc.c
	+translate$E $** > $@

$(OBJDIR)\descendants$O : descendants_.c descendants.h
	$(TCC) -o$@ -c descendants_.c

descendants_.c : $(SRCDIR)\descendants.c
	+translate$E $** > $@

$(OBJDIR)\diff$O : diff_.c diff.h
	$(TCC) -o$@ -c diff_.c

diff_.c : $(SRCDIR)\diff.c
	+translate$E $** > $@

$(OBJDIR)\diffcmd$O : diffcmd_.c diffcmd.h
	$(TCC) -o$@ -c diffcmd_.c

diffcmd_.c : $(SRCDIR)\diffcmd.c
	+translate$E $** > $@

$(OBJDIR)\dispatch$O : dispatch_.c dispatch.h
	$(TCC) -o$@ -c dispatch_.c

dispatch_.c : $(SRCDIR)\dispatch.c
	+translate$E $** > $@

$(OBJDIR)\doc$O : doc_.c doc.h
	$(TCC) -o$@ -c doc_.c

doc_.c : $(SRCDIR)\doc.c
	+translate$E $** > $@

$(OBJDIR)\encode$O : encode_.c encode.h
	$(TCC) -o$@ -c encode_.c

encode_.c : $(SRCDIR)\encode.c
	+translate$E $** > $@

$(OBJDIR)\etag$O : etag_.c etag.h
	$(TCC) -o$@ -c etag_.c

etag_.c : $(SRCDIR)\etag.c
	+translate$E $** > $@

$(OBJDIR)\event$O : event_.c event.h
	$(TCC) -o$@ -c event_.c

event_.c : $(SRCDIR)\event.c
	+translate$E $** > $@

$(OBJDIR)\export$O : export_.c export.h
	$(TCC) -o$@ -c export_.c

export_.c : $(SRCDIR)\export.c
	+translate$E $** > $@

$(OBJDIR)\extcgi$O : extcgi_.c extcgi.h
	$(TCC) -o$@ -c extcgi_.c

extcgi_.c : $(SRCDIR)\extcgi.c
	+translate$E $** > $@

$(OBJDIR)\file$O : file_.c file.h
	$(TCC) -o$@ -c file_.c

file_.c : $(SRCDIR)\file.c
	+translate$E $** > $@

$(OBJDIR)\fileedit$O : fileedit_.c fileedit.h
	$(TCC) -o$@ -c fileedit_.c

fileedit_.c : $(SRCDIR)\fileedit.c
	+translate$E $** > $@

$(OBJDIR)\finfo$O : finfo_.c finfo.h
	$(TCC) -o$@ -c finfo_.c

finfo_.c : $(SRCDIR)\finfo.c
	+translate$E $** > $@

$(OBJDIR)\foci$O : foci_.c foci.h
	$(TCC) -o$@ -c foci_.c

foci_.c : $(SRCDIR)\foci.c
	+translate$E $** > $@

$(OBJDIR)\forum$O : forum_.c forum.h
	$(TCC) -o$@ -c forum_.c

forum_.c : $(SRCDIR)\forum.c
	+translate$E $** > $@

$(OBJDIR)\fshell$O : fshell_.c fshell.h
	$(TCC) -o$@ -c fshell_.c

fshell_.c : $(SRCDIR)\fshell.c
	+translate$E $** > $@

$(OBJDIR)\fusefs$O : fusefs_.c fusefs.h
	$(TCC) -o$@ -c fusefs_.c

fusefs_.c : $(SRCDIR)\fusefs.c
	+translate$E $** > $@

$(OBJDIR)\fuzz$O : fuzz_.c fuzz.h
	$(TCC) -o$@ -c fuzz_.c

fuzz_.c : $(SRCDIR)\fuzz.c
	+translate$E $** > $@

$(OBJDIR)\glob$O : glob_.c glob.h
	$(TCC) -o$@ -c glob_.c

glob_.c : $(SRCDIR)\glob.c
	+translate$E $** > $@

$(OBJDIR)\graph$O : graph_.c graph.h
	$(TCC) -o$@ -c graph_.c

graph_.c : $(SRCDIR)\graph.c
	+translate$E $** > $@

$(OBJDIR)\gzip$O : gzip_.c gzip.h
	$(TCC) -o$@ -c gzip_.c

gzip_.c : $(SRCDIR)\gzip.c
	+translate$E $** > $@

$(OBJDIR)\hname$O : hname_.c hname.h
	$(TCC) -o$@ -c hname_.c

hname_.c : $(SRCDIR)\hname.c
	+translate$E $** > $@

$(OBJDIR)\hook$O : hook_.c hook.h
	$(TCC) -o$@ -c hook_.c

hook_.c : $(SRCDIR)\hook.c
	+translate$E $** > $@

$(OBJDIR)\http$O : http_.c http.h
	$(TCC) -o$@ -c http_.c

http_.c : $(SRCDIR)\http.c
	+translate$E $** > $@

$(OBJDIR)\http_socket$O : http_socket_.c http_socket.h
	$(TCC) -o$@ -c http_socket_.c

http_socket_.c : $(SRCDIR)\http_socket.c
	+translate$E $** > $@

$(OBJDIR)\http_ssl$O : http_ssl_.c http_ssl.h
	$(TCC) -o$@ -c http_ssl_.c

http_ssl_.c : $(SRCDIR)\http_ssl.c
	+translate$E $** > $@

$(OBJDIR)\http_transport$O : http_transport_.c http_transport.h
	$(TCC) -o$@ -c http_transport_.c

http_transport_.c : $(SRCDIR)\http_transport.c
	+translate$E $** > $@

$(OBJDIR)\import$O : import_.c import.h
	$(TCC) -o$@ -c import_.c

import_.c : $(SRCDIR)\import.c
	+translate$E $** > $@

$(OBJDIR)\info$O : info_.c info.h
	$(TCC) -o$@ -c info_.c

info_.c : $(SRCDIR)\info.c
	+translate$E $** > $@

$(OBJDIR)\interwiki$O : interwiki_.c interwiki.h
	$(TCC) -o$@ -c interwiki_.c

interwiki_.c : $(SRCDIR)\interwiki.c
	+translate$E $** > $@

$(OBJDIR)\json$O : json_.c json.h
	$(TCC) -o$@ -c json_.c

json_.c : $(SRCDIR)\json.c
	+translate$E $** > $@

$(OBJDIR)\json_artifact$O : json_artifact_.c json_artifact.h
	$(TCC) -o$@ -c json_artifact_.c

json_artifact_.c : $(SRCDIR)\json_artifact.c
	+translate$E $** > $@

$(OBJDIR)\json_branch$O : json_branch_.c json_branch.h
	$(TCC) -o$@ -c json_branch_.c

json_branch_.c : $(SRCDIR)\json_branch.c
	+translate$E $** > $@

$(OBJDIR)\json_config$O : json_config_.c json_config.h
	$(TCC) -o$@ -c json_config_.c

json_config_.c : $(SRCDIR)\json_config.c
	+translate$E $** > $@

$(OBJDIR)\json_diff$O : json_diff_.c json_diff.h
	$(TCC) -o$@ -c json_diff_.c

json_diff_.c : $(SRCDIR)\json_diff.c
	+translate$E $** > $@

$(OBJDIR)\json_dir$O : json_dir_.c json_dir.h
	$(TCC) -o$@ -c json_dir_.c

json_dir_.c : $(SRCDIR)\json_dir.c
	+translate$E $** > $@

$(OBJDIR)\json_finfo$O : json_finfo_.c json_finfo.h
	$(TCC) -o$@ -c json_finfo_.c

json_finfo_.c : $(SRCDIR)\json_finfo.c
	+translate$E $** > $@

$(OBJDIR)\json_login$O : json_login_.c json_login.h
	$(TCC) -o$@ -c json_login_.c

json_login_.c : $(SRCDIR)\json_login.c
	+translate$E $** > $@

$(OBJDIR)\json_query$O : json_query_.c json_query.h
	$(TCC) -o$@ -c json_query_.c

json_query_.c : $(SRCDIR)\json_query.c
	+translate$E $** > $@

$(OBJDIR)\json_report$O : json_report_.c json_report.h
	$(TCC) -o$@ -c json_report_.c

json_report_.c : $(SRCDIR)\json_report.c
	+translate$E $** > $@

$(OBJDIR)\json_status$O : json_status_.c json_status.h
	$(TCC) -o$@ -c json_status_.c

json_status_.c : $(SRCDIR)\json_status.c
	+translate$E $** > $@

$(OBJDIR)\json_tag$O : json_tag_.c json_tag.h
	$(TCC) -o$@ -c json_tag_.c

json_tag_.c : $(SRCDIR)\json_tag.c
	+translate$E $** > $@

$(OBJDIR)\json_timeline$O : json_timeline_.c json_timeline.h
	$(TCC) -o$@ -c json_timeline_.c

json_timeline_.c : $(SRCDIR)\json_timeline.c
	+translate$E $** > $@

$(OBJDIR)\json_user$O : json_user_.c json_user.h
	$(TCC) -o$@ -c json_user_.c

json_user_.c : $(SRCDIR)\json_user.c
	+translate$E $** > $@

$(OBJDIR)\json_wiki$O : json_wiki_.c json_wiki.h
	$(TCC) -o$@ -c json_wiki_.c

json_wiki_.c : $(SRCDIR)\json_wiki.c
	+translate$E $** > $@

$(OBJDIR)\leaf$O : leaf_.c leaf.h
	$(TCC) -o$@ -c leaf_.c

leaf_.c : $(SRCDIR)\leaf.c
	+translate$E $** > $@

$(OBJDIR)\loadctrl$O : loadctrl_.c loadctrl.h
	$(TCC) -o$@ -c loadctrl_.c

loadctrl_.c : $(SRCDIR)\loadctrl.c
	+translate$E $** > $@

$(OBJDIR)\login$O : login_.c login.h
	$(TCC) -o$@ -c login_.c

login_.c : $(SRCDIR)\login.c
	+translate$E $** > $@

$(OBJDIR)\lookslike$O : lookslike_.c lookslike.h
	$(TCC) -o$@ -c lookslike_.c

lookslike_.c : $(SRCDIR)\lookslike.c
	+translate$E $** > $@

$(OBJDIR)\main$O : main_.c main.h
	$(TCC) -o$@ -c main_.c

main_.c : $(SRCDIR)\main.c
	+translate$E $** > $@

$(OBJDIR)\manifest$O : manifest_.c manifest.h
	$(TCC) -o$@ -c manifest_.c

manifest_.c : $(SRCDIR)\manifest.c
	+translate$E $** > $@

$(OBJDIR)\markdown$O : markdown_.c markdown.h
	$(TCC) -o$@ -c markdown_.c

markdown_.c : $(SRCDIR)\markdown.c
	+translate$E $** > $@

$(OBJDIR)\markdown_html$O : markdown_html_.c markdown_html.h
	$(TCC) -o$@ -c markdown_html_.c

markdown_html_.c : $(SRCDIR)\markdown_html.c
	+translate$E $** > $@

$(OBJDIR)\md5$O : md5_.c md5.h
	$(TCC) -o$@ -c md5_.c

md5_.c : $(SRCDIR)\md5.c
	+translate$E $** > $@

$(OBJDIR)\merge$O : merge_.c merge.h
	$(TCC) -o$@ -c merge_.c

merge_.c : $(SRCDIR)\merge.c
	+translate$E $** > $@

$(OBJDIR)\merge3$O : merge3_.c merge3.h
	$(TCC) -o$@ -c merge3_.c

merge3_.c : $(SRCDIR)\merge3.c
	+translate$E $** > $@

$(OBJDIR)\moderate$O : moderate_.c moderate.h
	$(TCC) -o$@ -c moderate_.c

moderate_.c : $(SRCDIR)\moderate.c
	+translate$E $** > $@

$(OBJDIR)\name$O : name_.c name.h
	$(TCC) -o$@ -c name_.c

name_.c : $(SRCDIR)\name.c
	+translate$E $** > $@

$(OBJDIR)\patch$O : patch_.c patch.h
	$(TCC) -o$@ -c patch_.c

patch_.c : $(SRCDIR)\patch.c
	+translate$E $** > $@

$(OBJDIR)\path$O : path_.c path.h
	$(TCC) -o$@ -c path_.c

path_.c : $(SRCDIR)\path.c
	+translate$E $** > $@

$(OBJDIR)\piechart$O : piechart_.c piechart.h
	$(TCC) -o$@ -c piechart_.c

piechart_.c : $(SRCDIR)\piechart.c
	+translate$E $** > $@

$(OBJDIR)\pikchrshow$O : pikchrshow_.c pikchrshow.h
	$(TCC) -o$@ -c pikchrshow_.c

pikchrshow_.c : $(SRCDIR)\pikchrshow.c
	+translate$E $** > $@

$(OBJDIR)\pivot$O : pivot_.c pivot.h
	$(TCC) -o$@ -c pivot_.c

pivot_.c : $(SRCDIR)\pivot.c
	+translate$E $** > $@

$(OBJDIR)\popen$O : popen_.c popen.h
	$(TCC) -o$@ -c popen_.c

popen_.c : $(SRCDIR)\popen.c
	+translate$E $** > $@

$(OBJDIR)\pqueue$O : pqueue_.c pqueue.h
	$(TCC) -o$@ -c pqueue_.c

pqueue_.c : $(SRCDIR)\pqueue.c
	+translate$E $** > $@

$(OBJDIR)\printf$O : printf_.c printf.h
	$(TCC) -o$@ -c printf_.c

printf_.c : $(SRCDIR)\printf.c
	+translate$E $** > $@

$(OBJDIR)\publish$O : publish_.c publish.h
	$(TCC) -o$@ -c publish_.c

publish_.c : $(SRCDIR)\publish.c
	+translate$E $** > $@

$(OBJDIR)\purge$O : purge_.c purge.h
	$(TCC) -o$@ -c purge_.c

purge_.c : $(SRCDIR)\purge.c
	+translate$E $** > $@

$(OBJDIR)\rebuild$O : rebuild_.c rebuild.h
	$(TCC) -o$@ -c rebuild_.c

rebuild_.c : $(SRCDIR)\rebuild.c
	+translate$E $** > $@

$(OBJDIR)\regexp$O : regexp_.c regexp.h
	$(TCC) -o$@ -c regexp_.c

regexp_.c : $(SRCDIR)\regexp.c
	+translate$E $** > $@

$(OBJDIR)\repolist$O : repolist_.c repolist.h
	$(TCC) -o$@ -c repolist_.c

repolist_.c : $(SRCDIR)\repolist.c
	+translate$E $** > $@

$(OBJDIR)\report$O : report_.c report.h
	$(TCC) -o$@ -c report_.c

report_.c : $(SRCDIR)\report.c
	+translate$E $** > $@

$(OBJDIR)\rss$O : rss_.c rss.h
	$(TCC) -o$@ -c rss_.c

rss_.c : $(SRCDIR)\rss.c
	+translate$E $** > $@

$(OBJDIR)\schema$O : schema_.c schema.h
	$(TCC) -o$@ -c schema_.c

schema_.c : $(SRCDIR)\schema.c
	+translate$E $** > $@

$(OBJDIR)\search$O : search_.c search.h
	$(TCC) -o$@ -c search_.c

search_.c : $(SRCDIR)\search.c
	+translate$E $** > $@

$(OBJDIR)\security_audit$O : security_audit_.c security_audit.h
	$(TCC) -o$@ -c security_audit_.c

security_audit_.c : $(SRCDIR)\security_audit.c
	+translate$E $** > $@

$(OBJDIR)\setup$O : setup_.c setup.h
	$(TCC) -o$@ -c setup_.c

setup_.c : $(SRCDIR)\setup.c
	+translate$E $** > $@

$(OBJDIR)\setupuser$O : setupuser_.c setupuser.h
	$(TCC) -o$@ -c setupuser_.c

setupuser_.c : $(SRCDIR)\setupuser.c
	+translate$E $** > $@

$(OBJDIR)\sha1$O : sha1_.c sha1.h
	$(TCC) -o$@ -c sha1_.c

sha1_.c : $(SRCDIR)\sha1.c
	+translate$E $** > $@

$(OBJDIR)\sha1hard$O : sha1hard_.c sha1hard.h
	$(TCC) -o$@ -c sha1hard_.c

sha1hard_.c : $(SRCDIR)\sha1hard.c
	+translate$E $** > $@

$(OBJDIR)\sha3$O : sha3_.c sha3.h
	$(TCC) -o$@ -c sha3_.c

sha3_.c : $(SRCDIR)\sha3.c
	+translate$E $** > $@

$(OBJDIR)\shun$O : shun_.c shun.h
	$(TCC) -o$@ -c shun_.c

shun_.c : $(SRCDIR)\shun.c
	+translate$E $** > $@

$(OBJDIR)\sitemap$O : sitemap_.c sitemap.h
	$(TCC) -o$@ -c sitemap_.c

sitemap_.c : $(SRCDIR)\sitemap.c
	+translate$E $** > $@

$(OBJDIR)\skins$O : skins_.c skins.h
	$(TCC) -o$@ -c skins_.c

skins_.c : $(SRCDIR)\skins.c
	+translate$E $** > $@

$(OBJDIR)\smtp$O : smtp_.c smtp.h
	$(TCC) -o$@ -c smtp_.c

smtp_.c : $(SRCDIR)\smtp.c
	+translate$E $** > $@

$(OBJDIR)\sqlcmd$O : sqlcmd_.c sqlcmd.h
	$(TCC) -o$@ -c sqlcmd_.c

sqlcmd_.c : $(SRCDIR)\sqlcmd.c
	+translate$E $** > $@

$(OBJDIR)\stash$O : stash_.c stash.h
	$(TCC) -o$@ -c stash_.c

stash_.c : $(SRCDIR)\stash.c
	+translate$E $** > $@

$(OBJDIR)\stat$O : stat_.c stat.h
	$(TCC) -o$@ -c stat_.c

stat_.c : $(SRCDIR)\stat.c
	+translate$E $** > $@

$(OBJDIR)\statrep$O : statrep_.c statrep.h
	$(TCC) -o$@ -c statrep_.c

statrep_.c : $(SRCDIR)\statrep.c
	+translate$E $** > $@

$(OBJDIR)\style$O : style_.c style.h
	$(TCC) -o$@ -c style_.c

style_.c : $(SRCDIR)\style.c
	+translate$E $** > $@

$(OBJDIR)\sync$O : sync_.c sync.h
	$(TCC) -o$@ -c sync_.c

sync_.c : $(SRCDIR)\sync.c
	+translate$E $** > $@

$(OBJDIR)\tag$O : tag_.c tag.h
	$(TCC) -o$@ -c tag_.c

tag_.c : $(SRCDIR)\tag.c
	+translate$E $** > $@

$(OBJDIR)\tar$O : tar_.c tar.h
	$(TCC) -o$@ -c tar_.c

tar_.c : $(SRCDIR)\tar.c
	+translate$E $** > $@

$(OBJDIR)\terminal$O : terminal_.c terminal.h
	$(TCC) -o$@ -c terminal_.c

terminal_.c : $(SRCDIR)\terminal.c
	+translate$E $** > $@

$(OBJDIR)\th_main$O : th_main_.c th_main.h
	$(TCC) -o$@ -c th_main_.c

th_main_.c : $(SRCDIR)\th_main.c
	+translate$E $** > $@

$(OBJDIR)\timeline$O : timeline_.c timeline.h
	$(TCC) -o$@ -c timeline_.c

timeline_.c : $(SRCDIR)\timeline.c
	+translate$E $** > $@

$(OBJDIR)\tkt$O : tkt_.c tkt.h
	$(TCC) -o$@ -c tkt_.c

tkt_.c : $(SRCDIR)\tkt.c
	+translate$E $** > $@

$(OBJDIR)\tktsetup$O : tktsetup_.c tktsetup.h
	$(TCC) -o$@ -c tktsetup_.c

tktsetup_.c : $(SRCDIR)\tktsetup.c
	+translate$E $** > $@

$(OBJDIR)\undo$O : undo_.c undo.h
	$(TCC) -o$@ -c undo_.c

undo_.c : $(SRCDIR)\undo.c
	+translate$E $** > $@

$(OBJDIR)\unicode$O : unicode_.c unicode.h
	$(TCC) -o$@ -c unicode_.c

unicode_.c : $(SRCDIR)\unicode.c
	+translate$E $** > $@

$(OBJDIR)\unversioned$O : unversioned_.c unversioned.h
	$(TCC) -o$@ -c unversioned_.c

unversioned_.c : $(SRCDIR)\unversioned.c
	+translate$E $** > $@

$(OBJDIR)\update$O : update_.c update.h
	$(TCC) -o$@ -c update_.c

update_.c : $(SRCDIR)\update.c
	+translate$E $** > $@

$(OBJDIR)\url$O : url_.c url.h
	$(TCC) -o$@ -c url_.c

url_.c : $(SRCDIR)\url.c
	+translate$E $** > $@

$(OBJDIR)\user$O : user_.c user.h
	$(TCC) -o$@ -c user_.c

user_.c : $(SRCDIR)\user.c
	+translate$E $** > $@

$(OBJDIR)\utf8$O : utf8_.c utf8.h
	$(TCC) -o$@ -c utf8_.c

utf8_.c : $(SRCDIR)\utf8.c
	+translate$E $** > $@

$(OBJDIR)\util$O : util_.c util.h
	$(TCC) -o$@ -c util_.c

util_.c : $(SRCDIR)\util.c
	+translate$E $** > $@

$(OBJDIR)\verify$O : verify_.c verify.h
	$(TCC) -o$@ -c verify_.c

verify_.c : $(SRCDIR)\verify.c
	+translate$E $** > $@

$(OBJDIR)\vfile$O : vfile_.c vfile.h
	$(TCC) -o$@ -c vfile_.c

vfile_.c : $(SRCDIR)\vfile.c
	+translate$E $** > $@

$(OBJDIR)\wiki$O : wiki_.c wiki.h
	$(TCC) -o$@ -c wiki_.c

wiki_.c : $(SRCDIR)\wiki.c
	+translate$E $** > $@

$(OBJDIR)\wikiformat$O : wikiformat_.c wikiformat.h
	$(TCC) -o$@ -c wikiformat_.c

wikiformat_.c : $(SRCDIR)\wikiformat.c
	+translate$E $** > $@

$(OBJDIR)\winfile$O : winfile_.c winfile.h
	$(TCC) -o$@ -c winfile_.c

winfile_.c : $(SRCDIR)\winfile.c
	+translate$E $** > $@

$(OBJDIR)\winhttp$O : winhttp_.c winhttp.h
	$(TCC) -o$@ -c winhttp_.c

winhttp_.c : $(SRCDIR)\winhttp.c
	+translate$E $** > $@

$(OBJDIR)\xfer$O : xfer_.c xfer.h
	$(TCC) -o$@ -c xfer_.c

xfer_.c : $(SRCDIR)\xfer.c
	+translate$E $** > $@

$(OBJDIR)\xfersetup$O : xfersetup_.c xfersetup.h
	$(TCC) -o$@ -c xfersetup_.c

xfersetup_.c : $(SRCDIR)\xfersetup.c
	+translate$E $** > $@

$(OBJDIR)\zip$O : zip_.c zip.h
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zip_.c : $(SRCDIR)\zip.c
	+translate$E $** > $@

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	@copy /Y nul: headers
Added win/Makefile.mingw.

































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#!/usr/bin/make
#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
# This is a makefile for use on Cygwin/Darwin/FreeBSD/Linux/Windows using
# MinGW or MinGW-w64.
#
# Some of the special options which can be passed to make
#   USE_WINDOWS=1    if building under a windows command prompt
#   X64=1            if using an unprefixed 64-bit mingw compiler
#

#### Select one of MinGW, MinGW-w64 (32-bit) or MinGW-w64 (64-bit) compilers.
#    By default, this is an empty string (i.e. use the native compiler).
#
PREFIX =
# PREFIX = mingw32-
# PREFIX = i686-pc-mingw32-
# PREFIX = i686-w64-mingw32-
# PREFIX = x86_64-w64-mingw32-

#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = src
SRCDIR_extsrc = extsrc
SRCDIR_tools = tools

#### The directory into which object code files should be written.
#
OBJDIR = wbld

#### C compiler for use in building executables that will run on
#    the platform that is doing the build.  This is used to compile
#    code-generator programs as part of the build process.  See TCC
#    and TCCEXE below for the C compiler for building the finished
#    binary.
#
BCCEXE = gcc

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = $(BCCEXE)

#### Enable compiling with debug symbols (much larger binary)
#
# FOSSIL_ENABLE_SYMBOLS = 1

#### Enable JSON (https://www.json.org) support using "cson"
#
# FOSSIL_ENABLE_JSON = 1

#### Enable HTTPS support via OpenSSL (links to libssl and libcrypto)
#
# FOSSIL_ENABLE_SSL = 1

#### Automatically build OpenSSL when building Fossil (causes rebuild
#    issues when building incrementally).
#
# FOSSIL_BUILD_SSL = 1

#### Enable relative paths in external diff/gdiff
#
# FOSSIL_ENABLE_EXEC_REL_PATHS = 1

#### Enable TH1 scripts in embedded documentation files
#
# FOSSIL_ENABLE_TH1_DOCS = 1

#### Enable hooks for commands and web pages via TH1
#
# FOSSIL_ENABLE_TH1_HOOKS = 1

#### Enable scripting support via Tcl/Tk
#
# FOSSIL_ENABLE_TCL = 1

#### Load Tcl using the stubs library mechanism
#
# FOSSIL_ENABLE_TCL_STUBS = 1

#### Load Tcl using the private stubs mechanism
#
# FOSSIL_ENABLE_TCL_PRIVATE_STUBS = 1

#### Use 'system' SQLite
#
# USE_SYSTEM_SQLITE = 1

#### Use POSIX memory APIs from "sys/mman.h"
#
# USE_MMAN_H = 1

#### Use the SQLite Encryption Extension
#
# USE_SEE = 1

#### Use the Tcl source directory instead of the install directory?
#    This is useful when Tcl has been compiled statically with MinGW.
#
FOSSIL_TCL_SOURCE = 1

#### Check if the workaround for the MinGW command line handling needs to
#    be enabled by default.  This check may be somewhat fragile due to the
#    use of "findstring".
#
ifndef MINGW_IS_32BIT_ONLY
ifeq (,$(findstring w64-mingw32,$(PREFIX)))
MINGW_IS_32BIT_ONLY = 1
endif
endif

#### The directories where the zlib include and library files are located.
#
ZINCDIR = $(SRCDIR)/../compat/zlib
ZLIBDIR = $(SRCDIR)/../compat/zlib

#### Make an attempt to detect if Fossil is being built for the x64 processor
#    architecture.  This check may be somewhat fragile due to "findstring".
#
ifndef X64
ifneq (,$(findstring x86_64-w64-mingw32,$(PREFIX)))
X64 = 1
endif
endif

#### Determine if the optimized assembly routines provided with zlib should be
#    used, taking into account whether zlib is actually enabled and the target
#    processor architecture.
#
ifndef X64
SSLCONFIG = mingw
ZLIBCONFIG =
ZLIBTARGETS =
else
SSLCONFIG = mingw64
ZLIBCONFIG =
ZLIBTARGETS =
endif

#### Disable creation of the OpenSSL shared libraries.  Also, disable support
#    for SSLv3 (i.e. thereby forcing the use of TLS).
#
SSLCONFIG += no-ssl3 no-weak-ssl-ciphers no-shared

#### When using zlib, make sure that OpenSSL is configured to use the zlib
#    that Fossil knows about (i.e. the one within the source tree).
#
SSLCONFIG +=  --with-zlib-lib=$(PWD)/$(ZLIBDIR) --with-zlib-include=$(PWD)/$(ZLIBDIR) zlib

#### The directories where the OpenSSL include and library files are located.
#
OPENSSLDIR = $(SRCDIR)/../compat/openssl
OPENSSLINCDIR = $(OPENSSLDIR)/include
OPENSSLLIBDIR = $(OPENSSLDIR)

#### Either the directory where the Tcl library is installed or the Tcl
#    source code directory resides (depending on the value of the macro
#    FOSSIL_TCL_SOURCE).  If this points to the Tcl install directory,
#    this directory must have "include" and "lib" sub-directories.  If
#    this points to the Tcl source code directory, this directory must
#    have "generic" and "win" sub-directories.  The recommended usage
#    here is to use the Sysinternals junction tool to create a hard
#    link between a "tcl-8.x" sub-directory of the Fossil source code
#    directory and the target Tcl directory.  This removes the need to
#    hard-code the necessary paths in this Makefile.
#
TCLDIR = $(SRCDIR)/../compat/tcl-8.6

#### The Tcl source code directory.  This defaults to the same value as
#    TCLDIR macro (above), which may not be correct.  This value will
#    only be used if the FOSSIL_TCL_SOURCE macro is defined.
#
TCLSRCDIR = $(TCLDIR)

#### The Tcl include and library directories.  These values will only be
#    used if the FOSSIL_TCL_SOURCE macro is not defined.
#
TCLINCDIR = $(TCLDIR)/include
TCLLIBDIR = $(TCLDIR)/lib

#### Tcl: Which Tcl library do we want to use (8.4, 8.5, 8.6, etc)?
#
ifdef FOSSIL_ENABLE_TCL_STUBS
ifndef FOSSIL_ENABLE_TCL_PRIVATE_STUBS
LIBTCL = -ltclstub86
endif
TCLTARGET = libtclstub86.a
else
LIBTCL = -ltcl86
TCLTARGET = binaries
endif

#### C compiler for use in building executables that will run on the
#    target platform.  This is usually the same as BCCEXE, unless you
#    are cross-compiling.  This C compiler builds the finished binary
#    for fossil.  See BCC and BCCEXE above for the C compiler for
#    building intermediate code-generator tools.
#
TCCEXE = gcc

#### C compiler and options for use in building executables that will
#    run on the target platform.  This is usually the almost the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
TCC = $(PREFIX)$(TCCEXE) -Wall -Wdeclaration-after-statement
TCC += -I$(SRCDIR_extsrc)

#### Add the necessary command line options to build with debugging
#    symbols, if enabled.
#
ifdef FOSSIL_ENABLE_SYMBOLS
TCC += -g
else
TCC += -Os
endif

TCC += -L$(ZLIBDIR) -I$(ZINCDIR)

#### Compile resources for use in building executables that will run
#    on the target platform.
#
RCC = $(PREFIX)windres -I$(SRCDIR) -I$(ZINCDIR)
RCC += -I$(SRCDIR_extsrc)

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -L$(OPENSSLLIBDIR) -I$(OPENSSLINCDIR)
RCC += -I$(OPENSSLINCDIR)
endif

# With Tcl support
ifdef FOSSIL_ENABLE_TCL
ifdef FOSSIL_TCL_SOURCE
TCC += -L$(TCLSRCDIR)/win -I$(TCLSRCDIR)/generic -I$(TCLSRCDIR)/win
RCC += -I$(TCLSRCDIR)/generic -I$(TCLSRCDIR)/win
else
TCC += -L$(TCLLIBDIR) -I$(TCLINCDIR)
RCC += -I$(TCLINCDIR)
endif
endif

# With MinGW command line handling workaround
ifdef MINGW_IS_32BIT_ONLY
TCC += -DBROKEN_MINGW_CMDLINE=1
RCC += -DBROKEN_MINGW_CMDLINE=1
endif

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -DFOSSIL_ENABLE_SSL=1
RCC += -DFOSSIL_ENABLE_SSL=1
endif

# With relative paths in external diff/gdiff
ifdef FOSSIL_ENABLE_EXEC_REL_PATHS
TCC += -DFOSSIL_ENABLE_EXEC_REL_PATHS=1
RCC += -DFOSSIL_ENABLE_EXEC_REL_PATHS=1
endif

# With TH1 embedded docs support
ifdef FOSSIL_ENABLE_TH1_DOCS
TCC += -DFOSSIL_ENABLE_TH1_DOCS=1
RCC += -DFOSSIL_ENABLE_TH1_DOCS=1
endif

# With TH1 hook support
ifdef FOSSIL_ENABLE_TH1_HOOKS
TCC += -DFOSSIL_ENABLE_TH1_HOOKS=1
RCC += -DFOSSIL_ENABLE_TH1_HOOKS=1
endif

# With Tcl support
ifdef FOSSIL_ENABLE_TCL
TCC += -DFOSSIL_ENABLE_TCL=1
RCC += -DFOSSIL_ENABLE_TCL=1
# Either statically linked or via stubs
ifdef FOSSIL_ENABLE_TCL_STUBS
TCC += -DFOSSIL_ENABLE_TCL_STUBS=1 -DUSE_TCL_STUBS
RCC += -DFOSSIL_ENABLE_TCL_STUBS=1 -DUSE_TCL_STUBS
ifdef FOSSIL_ENABLE_TCL_PRIVATE_STUBS
TCC += -DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
RCC += -DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
endif
else
TCC += -DSTATIC_BUILD
RCC += -DSTATIC_BUILD
endif
endif

# With JSON support
ifdef FOSSIL_ENABLE_JSON
TCC += -DFOSSIL_ENABLE_JSON=1
RCC += -DFOSSIL_ENABLE_JSON=1
endif

# With "sys/mman.h" support
ifdef USE_MMAN_H
TCC += -DUSE_MMAN_H=1
RCC += -DUSE_MMAN_H=1
endif

# With SQLite Encryption Extension support
ifdef USE_SEE
TCC += -DUSE_SEE=1
RCC += -DUSE_SEE=1
endif

#### The option -static has no effect on MinGW(-w64), only dynamic
#    executables can be built when linking with MSVCRT.  OpenSSL
#    (optional) and zlib (required) however are always linked in
#    statically.  Therefore, the FOSSIL_DYNAMIC_BUILD option does
#    not really apply to MinGW (i.e. since ALL external libraries
#    are NOT linked dynamically).
#
# LIB = -static

#### MinGW: If available, use the Unicode capable runtime startup code.
#
ifndef MINGW_IS_32BIT_ONLY
LIB += -municode
endif

#### SQLite: If enabled, use the system SQLite library.
#
ifdef USE_SYSTEM_SQLITE
LIB += -lsqlite3
endif

#### OpenSSL: Add the necessary libraries required, if enabled.
#
ifdef FOSSIL_ENABLE_SSL
LIB += -lssl -lcrypto -lgdi32 -lcrypt32
endif

#### Tcl: Add the necessary libraries required, if enabled.
#
ifdef FOSSIL_ENABLE_TCL
LIB += $(LIBTCL)
endif

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other mandatory dependencies.
#
LIB += -lmingwex

#### zlib is required.
#
LIB += -lz

#### These libraries MUST appear in the same order as they do for Tcl
#    or linking with it will not work (exact reason unknown).
#
ifdef FOSSIL_ENABLE_TCL
ifdef FOSSIL_ENABLE_TCL_STUBS
LIB += -lkernel32 -lws2_32
else
LIB += -lnetapi32 -lkernel32 -luser32 -ladvapi32 -lws2_32
endif
else
LIB += -lkernel32 -lws2_32
endif

#### Library required for DNS lookups.
#
LIB += -ldnsapi

#### Tcl shell for use in running the fossil test suite.  This is only
#    used for testing.
#
TCLSH = tclsh

#### Nullsoft installer MakeNSIS location
#
MAKENSIS = "$(PROGRAMFILES)\NSIS\MakeNSIS.exe"

#### Inno Setup executable location
#
INNOSETUP = "$(PROGRAMFILES)\Inno Setup 5\ISCC.exe"

#### Include a configuration file that can override any one of these settings.
#
-include config.w32

# STOP HERE
# You should not need to change anything below this line
#--------------------------------------------------------
XBCC = $(BCC) $(CFLAGS)
XTCC = $(TCC) $(CFLAGS) -I. -I$(SRCDIR)

SRC = \
  $(SRCDIR)/add.c \
  $(SRCDIR)/ajax.c \
  $(SRCDIR)/alerts.c \
  $(SRCDIR)/allrepo.c \
  $(SRCDIR)/attach.c \
  $(SRCDIR)/backlink.c \
  $(SRCDIR)/backoffice.c \
  $(SRCDIR)/bag.c \
  $(SRCDIR)/bisect.c \
  $(SRCDIR)/blob.c \
  $(SRCDIR)/branch.c \
  $(SRCDIR)/browse.c \
  $(SRCDIR)/builtin.c \
  $(SRCDIR)/bundle.c \
  $(SRCDIR)/cache.c \
  $(SRCDIR)/capabilities.c \
  $(SRCDIR)/captcha.c \
  $(SRCDIR)/cgi.c \
  $(SRCDIR)/chat.c \
  $(SRCDIR)/checkin.c \
  $(SRCDIR)/checkout.c \
  $(SRCDIR)/clearsign.c \
  $(SRCDIR)/clone.c \
  $(SRCDIR)/color.c \
  $(SRCDIR)/comformat.c \
  $(SRCDIR)/configure.c \
  $(SRCDIR)/content.c \
  $(SRCDIR)/cookies.c \
  $(SRCDIR)/db.c \
  $(SRCDIR)/delta.c \
  $(SRCDIR)/deltacmd.c \
  $(SRCDIR)/deltafunc.c \
  $(SRCDIR)/descendants.c \
  $(SRCDIR)/diff.c \
  $(SRCDIR)/diffcmd.c \
  $(SRCDIR)/dispatch.c \
  $(SRCDIR)/doc.c \
  $(SRCDIR)/encode.c \
  $(SRCDIR)/etag.c \
  $(SRCDIR)/event.c \
  $(SRCDIR)/export.c \
  $(SRCDIR)/extcgi.c \
  $(SRCDIR)/file.c \
  $(SRCDIR)/fileedit.c \
  $(SRCDIR)/finfo.c \
  $(SRCDIR)/foci.c \
  $(SRCDIR)/forum.c \
  $(SRCDIR)/fshell.c \
  $(SRCDIR)/fusefs.c \
  $(SRCDIR)/fuzz.c \
  $(SRCDIR)/glob.c \
  $(SRCDIR)/graph.c \
  $(SRCDIR)/gzip.c \
  $(SRCDIR)/hname.c \
  $(SRCDIR)/hook.c \
  $(SRCDIR)/http.c \
  $(SRCDIR)/http_socket.c \
  $(SRCDIR)/http_ssl.c \
  $(SRCDIR)/http_transport.c \
  $(SRCDIR)/import.c \
  $(SRCDIR)/info.c \
  $(SRCDIR)/interwiki.c \
  $(SRCDIR)/json.c \
  $(SRCDIR)/json_artifact.c \
  $(SRCDIR)/json_branch.c \
  $(SRCDIR)/json_config.c \
  $(SRCDIR)/json_diff.c \
  $(SRCDIR)/json_dir.c \
  $(SRCDIR)/json_finfo.c \
  $(SRCDIR)/json_login.c \
  $(SRCDIR)/json_query.c \
  $(SRCDIR)/json_report.c \
  $(SRCDIR)/json_status.c \
  $(SRCDIR)/json_tag.c \
  $(SRCDIR)/json_timeline.c \
  $(SRCDIR)/json_user.c \
  $(SRCDIR)/json_wiki.c \
  $(SRCDIR)/leaf.c \
  $(SRCDIR)/loadctrl.c \
  $(SRCDIR)/login.c \
  $(SRCDIR)/lookslike.c \
  $(SRCDIR)/main.c \
  $(SRCDIR)/manifest.c \
  $(SRCDIR)/markdown.c \
  $(SRCDIR)/markdown_html.c \
  $(SRCDIR)/md5.c \
  $(SRCDIR)/merge.c \
  $(SRCDIR)/merge3.c \
  $(SRCDIR)/moderate.c \
  $(SRCDIR)/name.c \
  $(SRCDIR)/patch.c \
  $(SRCDIR)/path.c \
  $(SRCDIR)/piechart.c \
  $(SRCDIR)/pikchrshow.c \
  $(SRCDIR)/pivot.c \
  $(SRCDIR)/popen.c \
  $(SRCDIR)/pqueue.c \
  $(SRCDIR)/printf.c \
  $(SRCDIR)/publish.c \
  $(SRCDIR)/purge.c \
  $(SRCDIR)/rebuild.c \
  $(SRCDIR)/regexp.c \
  $(SRCDIR)/repolist.c \
  $(SRCDIR)/report.c \
  $(SRCDIR)/rss.c \
  $(SRCDIR)/schema.c \
  $(SRCDIR)/search.c \
  $(SRCDIR)/security_audit.c \
  $(SRCDIR)/setup.c \
  $(SRCDIR)/setupuser.c \
  $(SRCDIR)/sha1.c \
  $(SRCDIR)/sha1hard.c \
  $(SRCDIR)/sha3.c \
  $(SRCDIR)/shun.c \
  $(SRCDIR)/sitemap.c \
  $(SRCDIR)/skins.c \
  $(SRCDIR)/smtp.c \
  $(SRCDIR)/sqlcmd.c \
  $(SRCDIR)/stash.c \
  $(SRCDIR)/stat.c \
  $(SRCDIR)/statrep.c \
  $(SRCDIR)/style.c \
  $(SRCDIR)/sync.c \
  $(SRCDIR)/tag.c \
  $(SRCDIR)/tar.c \
  $(SRCDIR)/terminal.c \
  $(SRCDIR)/th_main.c \
  $(SRCDIR)/timeline.c \
  $(SRCDIR)/tkt.c \
  $(SRCDIR)/tktsetup.c \
  $(SRCDIR)/undo.c \
  $(SRCDIR)/unicode.c \
  $(SRCDIR)/unversioned.c \
  $(SRCDIR)/update.c \
  $(SRCDIR)/url.c \
  $(SRCDIR)/user.c \
  $(SRCDIR)/utf8.c \
  $(SRCDIR)/util.c \
  $(SRCDIR)/verify.c \
  $(SRCDIR)/vfile.c \
  $(SRCDIR)/wiki.c \
  $(SRCDIR)/wikiformat.c \
  $(SRCDIR)/winfile.c \
  $(SRCDIR)/winhttp.c \
  $(SRCDIR)/xfer.c \
  $(SRCDIR)/xfersetup.c \
  $(SRCDIR)/zip.c

EXTRA_FILES = \
  $(SRCDIR)/../extsrc/pikchr-worker.js \
  $(SRCDIR)/../extsrc/pikchr.js \
  $(SRCDIR)/../extsrc/pikchr.wasm \
  $(SRCDIR)/../skins/ardoise/css.txt \
  $(SRCDIR)/../skins/ardoise/details.txt \
  $(SRCDIR)/../skins/ardoise/footer.txt \
  $(SRCDIR)/../skins/ardoise/header.txt \
  $(SRCDIR)/../skins/black_and_white/css.txt \
  $(SRCDIR)/../skins/black_and_white/details.txt \
  $(SRCDIR)/../skins/black_and_white/footer.txt \
  $(SRCDIR)/../skins/black_and_white/header.txt \
  $(SRCDIR)/../skins/blitz/css.txt \
  $(SRCDIR)/../skins/blitz/details.txt \
  $(SRCDIR)/../skins/blitz/footer.txt \
  $(SRCDIR)/../skins/blitz/header.txt \
  $(SRCDIR)/../skins/blitz/ticket.txt \
  $(SRCDIR)/../skins/darkmode/css.txt \
  $(SRCDIR)/../skins/darkmode/details.txt \
  $(SRCDIR)/../skins/darkmode/footer.txt \
  $(SRCDIR)/../skins/darkmode/header.txt \
  $(SRCDIR)/../skins/default/css.txt \
  $(SRCDIR)/../skins/default/details.txt \
  $(SRCDIR)/../skins/default/footer.txt \
  $(SRCDIR)/../skins/default/header.txt \
  $(SRCDIR)/../skins/eagle/css.txt \
  $(SRCDIR)/../skins/eagle/details.txt \
  $(SRCDIR)/../skins/eagle/footer.txt \
  $(SRCDIR)/../skins/eagle/header.txt \
  $(SRCDIR)/../skins/etienne/css.txt \
  $(SRCDIR)/../skins/etienne/details.txt \
  $(SRCDIR)/../skins/etienne/footer.txt \
  $(SRCDIR)/../skins/etienne/header.txt \
  $(SRCDIR)/../skins/khaki/css.txt \
  $(SRCDIR)/../skins/khaki/details.txt \
  $(SRCDIR)/../skins/khaki/footer.txt \
  $(SRCDIR)/../skins/khaki/header.txt \
  $(SRCDIR)/../skins/original/css.txt \
  $(SRCDIR)/../skins/original/details.txt \
  $(SRCDIR)/../skins/original/footer.txt \
  $(SRCDIR)/../skins/original/header.txt \
  $(SRCDIR)/../skins/plain_gray/css.txt \
  $(SRCDIR)/../skins/plain_gray/details.txt \
  $(SRCDIR)/../skins/plain_gray/footer.txt \
  $(SRCDIR)/../skins/plain_gray/header.txt \
  $(SRCDIR)/../skins/xekri/css.txt \
  $(SRCDIR)/../skins/xekri/details.txt \
  $(SRCDIR)/../skins/xekri/footer.txt \
  $(SRCDIR)/../skins/xekri/header.txt \
  $(SRCDIR)/accordion.js \
  $(SRCDIR)/alerts/bflat2.wav \
  $(SRCDIR)/alerts/bflat3.wav \
  $(SRCDIR)/alerts/bloop.wav \
  $(SRCDIR)/alerts/plunk.wav \
  $(SRCDIR)/ci_edit.js \
  $(SRCDIR)/copybtn.js \
  $(SRCDIR)/default.css \
  $(SRCDIR)/diff.js \
  $(SRCDIR)/diff.tcl \
  $(SRCDIR)/forum.js \
  $(SRCDIR)/fossil.bootstrap.js \
  $(SRCDIR)/fossil.confirmer.js \
  $(SRCDIR)/fossil.copybutton.js \
  $(SRCDIR)/fossil.diff.js \
  $(SRCDIR)/fossil.dom.js \
  $(SRCDIR)/fossil.fetch.js \
  $(SRCDIR)/fossil.numbered-lines.js \
  $(SRCDIR)/fossil.page.brlist.js \
  $(SRCDIR)/fossil.page.chat.js \
  $(SRCDIR)/fossil.page.fileedit.js \
  $(SRCDIR)/fossil.page.forumpost.js \
  $(SRCDIR)/fossil.page.pikchrshow.js \
  $(SRCDIR)/fossil.page.pikchrshowasm.js \
  $(SRCDIR)/fossil.page.whistory.js \
  $(SRCDIR)/fossil.page.wikiedit.js \
  $(SRCDIR)/fossil.pikchr.js \
  $(SRCDIR)/fossil.popupwidget.js \
  $(SRCDIR)/fossil.storage.js \
  $(SRCDIR)/fossil.tabs.js \
  $(SRCDIR)/fossil.wikiedit-wysiwyg.js \
  $(SRCDIR)/graph.js \
  $(SRCDIR)/hbmenu.js \
  $(SRCDIR)/href.js \
  $(SRCDIR)/login.js \
  $(SRCDIR)/markdown.md \
  $(SRCDIR)/menu.js \
  $(SRCDIR)/scroll.js \
  $(SRCDIR)/skin.js \
  $(SRCDIR)/sorttable.js \
  $(SRCDIR)/sounds/0.wav \
  $(SRCDIR)/sounds/1.wav \
  $(SRCDIR)/sounds/2.wav \
  $(SRCDIR)/sounds/3.wav \
  $(SRCDIR)/sounds/4.wav \
  $(SRCDIR)/sounds/5.wav \
  $(SRCDIR)/sounds/6.wav \
  $(SRCDIR)/sounds/7.wav \
  $(SRCDIR)/sounds/8.wav \
  $(SRCDIR)/sounds/9.wav \
  $(SRCDIR)/sounds/a.wav \
  $(SRCDIR)/sounds/b.wav \
  $(SRCDIR)/sounds/c.wav \
  $(SRCDIR)/sounds/d.wav \
  $(SRCDIR)/sounds/e.wav \
  $(SRCDIR)/sounds/f.wav \
  $(SRCDIR)/style.admin_log.css \
  $(SRCDIR)/style.chat.css \
  $(SRCDIR)/style.fileedit.css \
  $(SRCDIR)/style.pikchrshow.css \
  $(SRCDIR)/style.uvlist.css \
  $(SRCDIR)/style.wikiedit.css \
  $(SRCDIR)/tree.js \
  $(SRCDIR)/useredit.js \
  $(SRCDIR)/wiki.wiki

TRANS_SRC = \
  $(OBJDIR)/add_.c \
  $(OBJDIR)/ajax_.c \
  $(OBJDIR)/alerts_.c \
  $(OBJDIR)/allrepo_.c \
  $(OBJDIR)/attach_.c \
  $(OBJDIR)/backlink_.c \
  $(OBJDIR)/backoffice_.c \
  $(OBJDIR)/bag_.c \
  $(OBJDIR)/bisect_.c \
  $(OBJDIR)/blob_.c \
  $(OBJDIR)/branch_.c \
  $(OBJDIR)/browse_.c \
  $(OBJDIR)/builtin_.c \
  $(OBJDIR)/bundle_.c \
  $(OBJDIR)/cache_.c \
  $(OBJDIR)/capabilities_.c \
  $(OBJDIR)/captcha_.c \
  $(OBJDIR)/cgi_.c \
  $(OBJDIR)/chat_.c \
  $(OBJDIR)/checkin_.c \
  $(OBJDIR)/checkout_.c \
  $(OBJDIR)/clearsign_.c \
  $(OBJDIR)/clone_.c \
  $(OBJDIR)/color_.c \
  $(OBJDIR)/comformat_.c \
  $(OBJDIR)/configure_.c \
  $(OBJDIR)/content_.c \
  $(OBJDIR)/cookies_.c \
  $(OBJDIR)/db_.c \
  $(OBJDIR)/delta_.c \
  $(OBJDIR)/deltacmd_.c \
  $(OBJDIR)/deltafunc_.c \
  $(OBJDIR)/descendants_.c \
  $(OBJDIR)/diff_.c \
  $(OBJDIR)/diffcmd_.c \
  $(OBJDIR)/dispatch_.c \
  $(OBJDIR)/doc_.c \
  $(OBJDIR)/encode_.c \
  $(OBJDIR)/etag_.c \
  $(OBJDIR)/event_.c \
  $(OBJDIR)/export_.c \
  $(OBJDIR)/extcgi_.c \
  $(OBJDIR)/file_.c \
  $(OBJDIR)/fileedit_.c \
  $(OBJDIR)/finfo_.c \
  $(OBJDIR)/foci_.c \
  $(OBJDIR)/forum_.c \
  $(OBJDIR)/fshell_.c \
  $(OBJDIR)/fusefs_.c \
  $(OBJDIR)/fuzz_.c \
  $(OBJDIR)/glob_.c \
  $(OBJDIR)/graph_.c \
  $(OBJDIR)/gzip_.c \
  $(OBJDIR)/hname_.c \
  $(OBJDIR)/hook_.c \
  $(OBJDIR)/http_.c \
  $(OBJDIR)/http_socket_.c \
  $(OBJDIR)/http_ssl_.c \
  $(OBJDIR)/http_transport_.c \
  $(OBJDIR)/import_.c \
  $(OBJDIR)/info_.c \
  $(OBJDIR)/interwiki_.c \
  $(OBJDIR)/json_.c \
  $(OBJDIR)/json_artifact_.c \
  $(OBJDIR)/json_branch_.c \
  $(OBJDIR)/json_config_.c \
  $(OBJDIR)/json_diff_.c \
  $(OBJDIR)/json_dir_.c \
  $(OBJDIR)/json_finfo_.c \
  $(OBJDIR)/json_login_.c \
  $(OBJDIR)/json_query_.c \
  $(OBJDIR)/json_report_.c \
  $(OBJDIR)/json_status_.c \
  $(OBJDIR)/json_tag_.c \
  $(OBJDIR)/json_timeline_.c \
  $(OBJDIR)/json_user_.c \
  $(OBJDIR)/json_wiki_.c \
  $(OBJDIR)/leaf_.c \
  $(OBJDIR)/loadctrl_.c \
  $(OBJDIR)/login_.c \
  $(OBJDIR)/lookslike_.c \
  $(OBJDIR)/main_.c \
  $(OBJDIR)/manifest_.c \
  $(OBJDIR)/markdown_.c \
  $(OBJDIR)/markdown_html_.c \
  $(OBJDIR)/md5_.c \
  $(OBJDIR)/merge_.c \
  $(OBJDIR)/merge3_.c \
  $(OBJDIR)/moderate_.c \
  $(OBJDIR)/name_.c \
  $(OBJDIR)/patch_.c \
  $(OBJDIR)/path_.c \
  $(OBJDIR)/piechart_.c \
  $(OBJDIR)/pikchrshow_.c \
  $(OBJDIR)/pivot_.c \
  $(OBJDIR)/popen_.c \
  $(OBJDIR)/pqueue_.c \
  $(OBJDIR)/printf_.c \
  $(OBJDIR)/publish_.c \
  $(OBJDIR)/purge_.c \
  $(OBJDIR)/rebuild_.c \
  $(OBJDIR)/regexp_.c \
  $(OBJDIR)/repolist_.c \
  $(OBJDIR)/report_.c \
  $(OBJDIR)/rss_.c \
  $(OBJDIR)/schema_.c \
  $(OBJDIR)/search_.c \
  $(OBJDIR)/security_audit_.c \
  $(OBJDIR)/setup_.c \
  $(OBJDIR)/setupuser_.c \
  $(OBJDIR)/sha1_.c \
  $(OBJDIR)/sha1hard_.c \
  $(OBJDIR)/sha3_.c \
  $(OBJDIR)/shun_.c \
  $(OBJDIR)/sitemap_.c \
  $(OBJDIR)/skins_.c \
  $(OBJDIR)/smtp_.c \
  $(OBJDIR)/sqlcmd_.c \
  $(OBJDIR)/stash_.c \
  $(OBJDIR)/stat_.c \
  $(OBJDIR)/statrep_.c \
  $(OBJDIR)/style_.c \
  $(OBJDIR)/sync_.c \
  $(OBJDIR)/tag_.c \
  $(OBJDIR)/tar_.c \
  $(OBJDIR)/terminal_.c \
  $(OBJDIR)/th_main_.c \
  $(OBJDIR)/timeline_.c \
  $(OBJDIR)/tkt_.c \
  $(OBJDIR)/tktsetup_.c \
  $(OBJDIR)/undo_.c \
  $(OBJDIR)/unicode_.c \
  $(OBJDIR)/unversioned_.c \
  $(OBJDIR)/update_.c \
  $(OBJDIR)/url_.c \
  $(OBJDIR)/user_.c \
  $(OBJDIR)/utf8_.c \
  $(OBJDIR)/util_.c \
  $(OBJDIR)/verify_.c \
  $(OBJDIR)/vfile_.c \
  $(OBJDIR)/wiki_.c \
  $(OBJDIR)/wikiformat_.c \
  $(OBJDIR)/winfile_.c \
  $(OBJDIR)/winhttp_.c \
  $(OBJDIR)/xfer_.c \
  $(OBJDIR)/xfersetup_.c \
  $(OBJDIR)/zip_.c

OBJ = \
 $(OBJDIR)/add.o \
 $(OBJDIR)/ajax.o \
 $(OBJDIR)/alerts.o \
 $(OBJDIR)/allrepo.o \
 $(OBJDIR)/attach.o \
 $(OBJDIR)/backlink.o \
 $(OBJDIR)/backoffice.o \
 $(OBJDIR)/bag.o \
 $(OBJDIR)/bisect.o \
 $(OBJDIR)/blob.o \
 $(OBJDIR)/branch.o \
 $(OBJDIR)/browse.o \
 $(OBJDIR)/builtin.o \
 $(OBJDIR)/bundle.o \
 $(OBJDIR)/cache.o \
 $(OBJDIR)/capabilities.o \
 $(OBJDIR)/captcha.o \
 $(OBJDIR)/cgi.o \
 $(OBJDIR)/chat.o \
 $(OBJDIR)/checkin.o \
 $(OBJDIR)/checkout.o \
 $(OBJDIR)/clearsign.o \
 $(OBJDIR)/clone.o \
 $(OBJDIR)/color.o \
 $(OBJDIR)/comformat.o \
 $(OBJDIR)/configure.o \
 $(OBJDIR)/content.o \
 $(OBJDIR)/cookies.o \
 $(OBJDIR)/db.o \
 $(OBJDIR)/delta.o \
 $(OBJDIR)/deltacmd.o \
 $(OBJDIR)/deltafunc.o \
 $(OBJDIR)/descendants.o \
 $(OBJDIR)/diff.o \
 $(OBJDIR)/diffcmd.o \
 $(OBJDIR)/dispatch.o \
 $(OBJDIR)/doc.o \
 $(OBJDIR)/encode.o \
 $(OBJDIR)/etag.o \
 $(OBJDIR)/event.o \
 $(OBJDIR)/export.o \
 $(OBJDIR)/extcgi.o \
 $(OBJDIR)/file.o \
 $(OBJDIR)/fileedit.o \
 $(OBJDIR)/finfo.o \
 $(OBJDIR)/foci.o \
 $(OBJDIR)/forum.o \
 $(OBJDIR)/fshell.o \
 $(OBJDIR)/fusefs.o \
 $(OBJDIR)/fuzz.o \
 $(OBJDIR)/glob.o \
 $(OBJDIR)/graph.o \
 $(OBJDIR)/gzip.o \
 $(OBJDIR)/hname.o \
 $(OBJDIR)/hook.o \
 $(OBJDIR)/http.o \
 $(OBJDIR)/http_socket.o \
 $(OBJDIR)/http_ssl.o \
 $(OBJDIR)/http_transport.o \
 $(OBJDIR)/import.o \
 $(OBJDIR)/info.o \
 $(OBJDIR)/interwiki.o \
 $(OBJDIR)/json.o \
 $(OBJDIR)/json_artifact.o \
 $(OBJDIR)/json_branch.o \
 $(OBJDIR)/json_config.o \
 $(OBJDIR)/json_diff.o \
 $(OBJDIR)/json_dir.o \
 $(OBJDIR)/json_finfo.o \
 $(OBJDIR)/json_login.o \
 $(OBJDIR)/json_query.o \
 $(OBJDIR)/json_report.o \
 $(OBJDIR)/json_status.o \
 $(OBJDIR)/json_tag.o \
 $(OBJDIR)/json_timeline.o \
 $(OBJDIR)/json_user.o \
 $(OBJDIR)/json_wiki.o \
 $(OBJDIR)/leaf.o \
 $(OBJDIR)/loadctrl.o \
 $(OBJDIR)/login.o \
 $(OBJDIR)/lookslike.o \
 $(OBJDIR)/main.o \
 $(OBJDIR)/manifest.o \
 $(OBJDIR)/markdown.o \
 $(OBJDIR)/markdown_html.o \
 $(OBJDIR)/md5.o \
 $(OBJDIR)/merge.o \
 $(OBJDIR)/merge3.o \
 $(OBJDIR)/moderate.o \
 $(OBJDIR)/name.o \
 $(OBJDIR)/patch.o \
 $(OBJDIR)/path.o \
 $(OBJDIR)/piechart.o \
 $(OBJDIR)/pikchrshow.o \
 $(OBJDIR)/pivot.o \
 $(OBJDIR)/popen.o \
 $(OBJDIR)/pqueue.o \
 $(OBJDIR)/printf.o \
 $(OBJDIR)/publish.o \
 $(OBJDIR)/purge.o \
 $(OBJDIR)/rebuild.o \
 $(OBJDIR)/regexp.o \
 $(OBJDIR)/repolist.o \
 $(OBJDIR)/report.o \
 $(OBJDIR)/rss.o \
 $(OBJDIR)/schema.o \
 $(OBJDIR)/search.o \
 $(OBJDIR)/security_audit.o \
 $(OBJDIR)/setup.o \
 $(OBJDIR)/setupuser.o \
 $(OBJDIR)/sha1.o \
 $(OBJDIR)/sha1hard.o \
 $(OBJDIR)/sha3.o \
 $(OBJDIR)/shun.o \
 $(OBJDIR)/sitemap.o \
 $(OBJDIR)/skins.o \
 $(OBJDIR)/smtp.o \
 $(OBJDIR)/sqlcmd.o \
 $(OBJDIR)/stash.o \
 $(OBJDIR)/stat.o \
 $(OBJDIR)/statrep.o \
 $(OBJDIR)/style.o \
 $(OBJDIR)/sync.o \
 $(OBJDIR)/tag.o \
 $(OBJDIR)/tar.o \
 $(OBJDIR)/terminal.o \
 $(OBJDIR)/th_main.o \
 $(OBJDIR)/timeline.o \
 $(OBJDIR)/tkt.o \
 $(OBJDIR)/tktsetup.o \
 $(OBJDIR)/undo.o \
 $(OBJDIR)/unicode.o \
 $(OBJDIR)/unversioned.o \
 $(OBJDIR)/update.o \
 $(OBJDIR)/url.o \
 $(OBJDIR)/user.o \
 $(OBJDIR)/utf8.o \
 $(OBJDIR)/util.o \
 $(OBJDIR)/verify.o \
 $(OBJDIR)/vfile.o \
 $(OBJDIR)/wiki.o \
 $(OBJDIR)/wikiformat.o \
 $(OBJDIR)/winfile.o \
 $(OBJDIR)/winhttp.o \
 $(OBJDIR)/xfer.o \
 $(OBJDIR)/xfersetup.o \
 $(OBJDIR)/zip.o

APPNAME    = fossil.exe
APPTARGETS =

#### If the USE_WINDOWS variable exists, it is assumed that we are building
#    inside of a Windows-style shell; otherwise, it is assumed that we are
#    building inside of a Unix-style shell.  Note that the "move" command is
#    broken when attempting to use it from the Windows shell via MinGW make
#    because the SHELL variable is only used for certain commands that are
#    recognized internally by make.
#
ifdef USE_WINDOWS
TRANSLATE   = $(subst /,\,$(OBJDIR)/translate.exe)
MAKEHEADERS = $(subst /,\,$(OBJDIR)/makeheaders.exe)
MKINDEX     = $(subst /,\,$(OBJDIR)/mkindex.exe)
MKBUILTIN   = $(subst /,\,$(OBJDIR)/mkbuiltin.exe)
MKVERSION   = $(subst /,\,$(OBJDIR)/mkversion.exe)
CODECHECK1  = $(subst /,\,$(OBJDIR)/codecheck1.exe)
CAT         = type
CP          = copy
GREP        = find
MV          = copy
RM          = del /Q
MKDIR       = -mkdir
RMDIR       = rmdir /S /Q
else
TRANSLATE   = $(OBJDIR)/translate.exe
MAKEHEADERS = $(OBJDIR)/makeheaders.exe
MKINDEX     = $(OBJDIR)/mkindex.exe
MKBUILTIN   = $(OBJDIR)/mkbuiltin.exe
MKVERSION   = $(OBJDIR)/mkversion.exe
CODECHECK1  = $(OBJDIR)/codecheck1.exe
CAT         = cat
CP          = cp
GREP        = grep
MV          = mv
RM          = rm -f
MKDIR       = -mkdir -p
RMDIR       = rm -rf
endif

all:	$(OBJDIR) $(APPNAME)

$(OBJDIR)/fossil.o:	$(SRCDIR)/../win/fossil.rc $(OBJDIR)/VERSION.h
ifdef USE_WINDOWS
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.rc) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.ico) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.exe.manifest) $(subst /,\,$(OBJDIR))
else
	$(CP) $(SRCDIR)/../win/fossil.rc $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.ico $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.exe.manifest $(OBJDIR)
endif
	$(RCC) $(OBJDIR)/fossil.rc -o $(OBJDIR)/fossil.o

install:	$(OBJDIR) $(APPNAME)
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(INSTALLDIR))
	$(CP) $(subst /,\,$(APPNAME)) $(subst /,\,$(INSTALLDIR))
else
	$(MKDIR) $(INSTALLDIR)
	$(CP) $(APPNAME) $(INSTALLDIR)
endif

$(OBJDIR):
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(OBJDIR))
else
	$(MKDIR) $(OBJDIR)
endif

$(TRANSLATE):	$(SRCDIR_tools)/translate.c
	$(XBCC) -o $@ $(SRCDIR_tools)/translate.c

$(MAKEHEADERS):	$(SRCDIR_tools)/makeheaders.c
	$(XBCC) -o $@ $(SRCDIR_tools)/makeheaders.c

$(MKINDEX):	$(SRCDIR_tools)/mkindex.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkindex.c

$(MKBUILTIN):	$(SRCDIR_tools)/mkbuiltin.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkbuiltin.c

$(MKVERSION): $(SRCDIR_tools)/mkversion.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkversion.c

$(CODECHECK1):	$(SRCDIR_tools)/codecheck1.c
	$(XBCC) -o $@ $(SRCDIR_tools)/codecheck1.c

# WARNING. DANGER. Running the test suite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(MKVERSION) $(OBJDIR)/phony.h
	$(MKVERSION) $(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION >$@

$(OBJDIR)/phony.h:
	# Force rebuild of VERSION.h every time "make" is run

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0 or 1.
# If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system SQLite will be linked
# using -lsqlite3.
#
# Closely related is SQLITE3_ORIGIN, with the same 0/1 mapping,
# plus a value of 2 means that we are building a client-provided
# sqlite3.c.
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o
SQLITE3_OBJ.1 = $(OBJDIR)/sqlite3-see.o
# SQLITE3_OBJ.2 is set by the configure process
SQLITE3_OBJ.  = $(SQLITE3_OBJ.0)
SQLITE3_OBJ   = $(SQLITE3_OBJ.$(SQLITE3_ORIGIN))

# The USE_SEE variable may be undefined, 0 or 1.  If undefined or 0,
# in-tree SQLite is used.  If 1, then sqlite3-see.c (not part of the
# source tree) is used and extra flags are provided to enable the
# SQLite Encryption Extension.
SQLITE3_SRC.0 = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC.1 = $(SRCDIR_extsrc)/sqlite3-see.c
# SQLITE3_SRC.2 is set by top-level configure/makefile process.
SQLITE3_SRC. = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC = $(SQLITE3_SRC.$(SQLITE3_ORIGIN))
SQLITE3_SHELL_SRC.0 = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC.1 = $(SRCDIR_extsrc)/shell-see.c
# SQLITE3_SHELL_SRC.2 comes from the configure process
SQLITE3_SHELL_SRC. = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC = $(SQLITE3_SHELL_SRC.$(SQLITE3_ORIGIN))
SEE_FLAGS.0 =
SEE_FLAGS.1 = -DSQLITE_HAS_CODEC -DSQLITE_SHELL_DBKEY_PROC=fossil_key
SEE_FLAGS. =
SEE_FLAGS = $(SEE_FLAGS.$(USE_SEE))


EXTRAOBJ = \
 $(SQLITE3_OBJ.$(SQLITE3_ORIGIN)) \
 $(OBJDIR)/pikchr.o \
 $(OBJDIR)/shell.o \
 $(OBJDIR)/th.o \
 $(OBJDIR)/th_lang.o \
 $(OBJDIR)/th_tcl.o \
 $(OBJDIR)/cson_amalgamation.o


zlib:	$(ZLIBTARGETS)
	$(MAKE) -C $(ZLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) $(ZLIBCONFIG) -f win32/Makefile.gcc libz.a

clean-zlib:
	$(MAKE) -C $(ZLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) -f win32/Makefile.gcc clean

BLDTARGETS = zlib

openssl:	$(BLDTARGETS)
	cd $(OPENSSLLIBDIR);./Configure --cross-compile-prefix=$(PREFIX) $(SSLCONFIG)
	sed -i -e 's/^PERL=C:\\.*$$/PERL=perl.exe/i' $(OPENSSLLIBDIR)/Makefile
	$(MAKE) -C $(OPENSSLLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) build_libs

clean-openssl:
	$(MAKE) -C $(OPENSSLLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) clean

tcl:
	cd $(TCLSRCDIR)/win;./configure
	$(MAKE) -C $(TCLSRCDIR)/win PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) $(TCLTARGET)

clean-tcl:
	$(MAKE) -C $(TCLSRCDIR)/win PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) distclean

APPTARGETS += $(BLDTARGETS)

ifdef FOSSIL_BUILD_SSL
APPTARGETS += openssl
endif

$(APPNAME):	$(APPTARGETS) $(OBJDIR)/headers $(CODECHECK1) $(EXTRAOBJ) $(OBJ) $(OBJDIR)/fossil.o
	$(CODECHECK1) $(TRANS_SRC)
	$(TCC) -o $@ $(EXTRAOBJ) $(OBJ) $(OBJDIR)/fossil.o $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:
	# noop

clean:
ifdef USE_WINDOWS
	$(RM) $(subst /,\,$(APPNAME))
	$(RMDIR) $(subst /,\,$(OBJDIR))
else
	$(RM) $(APPNAME)
	$(RMDIR) $(OBJDIR)
endif

setup: $(OBJDIR) $(APPNAME)
	$(MAKENSIS) ./setup/fossil.nsi

innosetup: $(OBJDIR) $(APPNAME)
	$(INNOSETUP) ./setup/fossil.iss -DAppVersion=$(shell $(CAT) ./VERSION)

$(OBJDIR)/page_index.h: $(TRANS_SRC) $(MKINDEX)
	$(MKINDEX) $(TRANS_SRC) >$@

$(OBJDIR)/builtin_data.h:	$(MKBUILTIN) $(EXTRA_FILES)
	$(MKBUILTIN) --prefix $(SRCDIR)/ $(EXTRA_FILES) >$@

$(OBJDIR)/headers:	$(OBJDIR)/page_index.h $(OBJDIR)/builtin_data.h $(MAKEHEADERS) $(OBJDIR)/VERSION.h
	$(MAKEHEADERS) $(OBJDIR)/add_.c:$(OBJDIR)/add.h \
	$(OBJDIR)/ajax_.c:$(OBJDIR)/ajax.h \
	$(OBJDIR)/alerts_.c:$(OBJDIR)/alerts.h \
	$(OBJDIR)/allrepo_.c:$(OBJDIR)/allrepo.h \
	$(OBJDIR)/attach_.c:$(OBJDIR)/attach.h \
	$(OBJDIR)/backlink_.c:$(OBJDIR)/backlink.h \
	$(OBJDIR)/backoffice_.c:$(OBJDIR)/backoffice.h \
	$(OBJDIR)/bag_.c:$(OBJDIR)/bag.h \
	$(OBJDIR)/bisect_.c:$(OBJDIR)/bisect.h \
	$(OBJDIR)/blob_.c:$(OBJDIR)/blob.h \
	$(OBJDIR)/branch_.c:$(OBJDIR)/branch.h \
	$(OBJDIR)/browse_.c:$(OBJDIR)/browse.h \
	$(OBJDIR)/builtin_.c:$(OBJDIR)/builtin.h \
	$(OBJDIR)/bundle_.c:$(OBJDIR)/bundle.h \
	$(OBJDIR)/cache_.c:$(OBJDIR)/cache.h \
	$(OBJDIR)/capabilities_.c:$(OBJDIR)/capabilities.h \
	$(OBJDIR)/captcha_.c:$(OBJDIR)/captcha.h \
	$(OBJDIR)/cgi_.c:$(OBJDIR)/cgi.h \
	$(OBJDIR)/chat_.c:$(OBJDIR)/chat.h \
	$(OBJDIR)/checkin_.c:$(OBJDIR)/checkin.h \
	$(OBJDIR)/checkout_.c:$(OBJDIR)/checkout.h \
	$(OBJDIR)/clearsign_.c:$(OBJDIR)/clearsign.h \
	$(OBJDIR)/clone_.c:$(OBJDIR)/clone.h \
	$(OBJDIR)/color_.c:$(OBJDIR)/color.h \
	$(OBJDIR)/comformat_.c:$(OBJDIR)/comformat.h \
	$(OBJDIR)/configure_.c:$(OBJDIR)/configure.h \
	$(OBJDIR)/content_.c:$(OBJDIR)/content.h \
	$(OBJDIR)/cookies_.c:$(OBJDIR)/cookies.h \
	$(OBJDIR)/db_.c:$(OBJDIR)/db.h \
	$(OBJDIR)/delta_.c:$(OBJDIR)/delta.h \
	$(OBJDIR)/deltacmd_.c:$(OBJDIR)/deltacmd.h \
	$(OBJDIR)/deltafunc_.c:$(OBJDIR)/deltafunc.h \
	$(OBJDIR)/descendants_.c:$(OBJDIR)/descendants.h \
	$(OBJDIR)/diff_.c:$(OBJDIR)/diff.h \
	$(OBJDIR)/diffcmd_.c:$(OBJDIR)/diffcmd.h \
	$(OBJDIR)/dispatch_.c:$(OBJDIR)/dispatch.h \
	$(OBJDIR)/doc_.c:$(OBJDIR)/doc.h \
	$(OBJDIR)/encode_.c:$(OBJDIR)/encode.h \
	$(OBJDIR)/etag_.c:$(OBJDIR)/etag.h \
	$(OBJDIR)/event_.c:$(OBJDIR)/event.h \
	$(OBJDIR)/export_.c:$(OBJDIR)/export.h \
	$(OBJDIR)/extcgi_.c:$(OBJDIR)/extcgi.h \
	$(OBJDIR)/file_.c:$(OBJDIR)/file.h \
	$(OBJDIR)/fileedit_.c:$(OBJDIR)/fileedit.h \
	$(OBJDIR)/finfo_.c:$(OBJDIR)/finfo.h \
	$(OBJDIR)/foci_.c:$(OBJDIR)/foci.h \
	$(OBJDIR)/forum_.c:$(OBJDIR)/forum.h \
	$(OBJDIR)/fshell_.c:$(OBJDIR)/fshell.h \
	$(OBJDIR)/fusefs_.c:$(OBJDIR)/fusefs.h \
	$(OBJDIR)/fuzz_.c:$(OBJDIR)/fuzz.h \
	$(OBJDIR)/glob_.c:$(OBJDIR)/glob.h \
	$(OBJDIR)/graph_.c:$(OBJDIR)/graph.h \
	$(OBJDIR)/gzip_.c:$(OBJDIR)/gzip.h \
	$(OBJDIR)/hname_.c:$(OBJDIR)/hname.h \
	$(OBJDIR)/hook_.c:$(OBJDIR)/hook.h \
	$(OBJDIR)/http_.c:$(OBJDIR)/http.h \
	$(OBJDIR)/http_socket_.c:$(OBJDIR)/http_socket.h \
	$(OBJDIR)/http_ssl_.c:$(OBJDIR)/http_ssl.h \
	$(OBJDIR)/http_transport_.c:$(OBJDIR)/http_transport.h \
	$(OBJDIR)/import_.c:$(OBJDIR)/import.h \
	$(OBJDIR)/info_.c:$(OBJDIR)/info.h \
	$(OBJDIR)/interwiki_.c:$(OBJDIR)/interwiki.h \
	$(OBJDIR)/json_.c:$(OBJDIR)/json.h \
	$(OBJDIR)/json_artifact_.c:$(OBJDIR)/json_artifact.h \
	$(OBJDIR)/json_branch_.c:$(OBJDIR)/json_branch.h \
	$(OBJDIR)/json_config_.c:$(OBJDIR)/json_config.h \
	$(OBJDIR)/json_diff_.c:$(OBJDIR)/json_diff.h \
	$(OBJDIR)/json_dir_.c:$(OBJDIR)/json_dir.h \
	$(OBJDIR)/json_finfo_.c:$(OBJDIR)/json_finfo.h \
	$(OBJDIR)/json_login_.c:$(OBJDIR)/json_login.h \
	$(OBJDIR)/json_query_.c:$(OBJDIR)/json_query.h \
	$(OBJDIR)/json_report_.c:$(OBJDIR)/json_report.h \
	$(OBJDIR)/json_status_.c:$(OBJDIR)/json_status.h \
	$(OBJDIR)/json_tag_.c:$(OBJDIR)/json_tag.h \
	$(OBJDIR)/json_timeline_.c:$(OBJDIR)/json_timeline.h \
	$(OBJDIR)/json_user_.c:$(OBJDIR)/json_user.h \
	$(OBJDIR)/json_wiki_.c:$(OBJDIR)/json_wiki.h \
	$(OBJDIR)/leaf_.c:$(OBJDIR)/leaf.h \
	$(OBJDIR)/loadctrl_.c:$(OBJDIR)/loadctrl.h \
	$(OBJDIR)/login_.c:$(OBJDIR)/login.h \
	$(OBJDIR)/lookslike_.c:$(OBJDIR)/lookslike.h \
	$(OBJDIR)/main_.c:$(OBJDIR)/main.h \
	$(OBJDIR)/manifest_.c:$(OBJDIR)/manifest.h \
	$(OBJDIR)/markdown_.c:$(OBJDIR)/markdown.h \
	$(OBJDIR)/markdown_html_.c:$(OBJDIR)/markdown_html.h \
	$(OBJDIR)/md5_.c:$(OBJDIR)/md5.h \
	$(OBJDIR)/merge_.c:$(OBJDIR)/merge.h \
	$(OBJDIR)/merge3_.c:$(OBJDIR)/merge3.h \
	$(OBJDIR)/moderate_.c:$(OBJDIR)/moderate.h \
	$(OBJDIR)/name_.c:$(OBJDIR)/name.h \
	$(OBJDIR)/patch_.c:$(OBJDIR)/patch.h \
	$(OBJDIR)/path_.c:$(OBJDIR)/path.h \
	$(OBJDIR)/piechart_.c:$(OBJDIR)/piechart.h \
	$(OBJDIR)/pikchrshow_.c:$(OBJDIR)/pikchrshow.h \
	$(OBJDIR)/pivot_.c:$(OBJDIR)/pivot.h \
	$(OBJDIR)/popen_.c:$(OBJDIR)/popen.h \
	$(OBJDIR)/pqueue_.c:$(OBJDIR)/pqueue.h \
	$(OBJDIR)/printf_.c:$(OBJDIR)/printf.h \
	$(OBJDIR)/publish_.c:$(OBJDIR)/publish.h \
	$(OBJDIR)/purge_.c:$(OBJDIR)/purge.h \
	$(OBJDIR)/rebuild_.c:$(OBJDIR)/rebuild.h \
	$(OBJDIR)/regexp_.c:$(OBJDIR)/regexp.h \
	$(OBJDIR)/repolist_.c:$(OBJDIR)/repolist.h \
	$(OBJDIR)/report_.c:$(OBJDIR)/report.h \
	$(OBJDIR)/rss_.c:$(OBJDIR)/rss.h \
	$(OBJDIR)/schema_.c:$(OBJDIR)/schema.h \
	$(OBJDIR)/search_.c:$(OBJDIR)/search.h \
	$(OBJDIR)/security_audit_.c:$(OBJDIR)/security_audit.h \
	$(OBJDIR)/setup_.c:$(OBJDIR)/setup.h \
	$(OBJDIR)/setupuser_.c:$(OBJDIR)/setupuser.h \
	$(OBJDIR)/sha1_.c:$(OBJDIR)/sha1.h \
	$(OBJDIR)/sha1hard_.c:$(OBJDIR)/sha1hard.h \
	$(OBJDIR)/sha3_.c:$(OBJDIR)/sha3.h \
	$(OBJDIR)/shun_.c:$(OBJDIR)/shun.h \
	$(OBJDIR)/sitemap_.c:$(OBJDIR)/sitemap.h \
	$(OBJDIR)/skins_.c:$(OBJDIR)/skins.h \
	$(OBJDIR)/smtp_.c:$(OBJDIR)/smtp.h \
	$(OBJDIR)/sqlcmd_.c:$(OBJDIR)/sqlcmd.h \
	$(OBJDIR)/stash_.c:$(OBJDIR)/stash.h \
	$(OBJDIR)/stat_.c:$(OBJDIR)/stat.h \
	$(OBJDIR)/statrep_.c:$(OBJDIR)/statrep.h \
	$(OBJDIR)/style_.c:$(OBJDIR)/style.h \
	$(OBJDIR)/sync_.c:$(OBJDIR)/sync.h \
	$(OBJDIR)/tag_.c:$(OBJDIR)/tag.h \
	$(OBJDIR)/tar_.c:$(OBJDIR)/tar.h \
	$(OBJDIR)/terminal_.c:$(OBJDIR)/terminal.h \
	$(OBJDIR)/th_main_.c:$(OBJDIR)/th_main.h \
	$(OBJDIR)/timeline_.c:$(OBJDIR)/timeline.h \
	$(OBJDIR)/tkt_.c:$(OBJDIR)/tkt.h \
	$(OBJDIR)/tktsetup_.c:$(OBJDIR)/tktsetup.h \
	$(OBJDIR)/undo_.c:$(OBJDIR)/undo.h \
	$(OBJDIR)/unicode_.c:$(OBJDIR)/unicode.h \
	$(OBJDIR)/unversioned_.c:$(OBJDIR)/unversioned.h \
	$(OBJDIR)/update_.c:$(OBJDIR)/update.h \
	$(OBJDIR)/url_.c:$(OBJDIR)/url.h \
	$(OBJDIR)/user_.c:$(OBJDIR)/user.h \
	$(OBJDIR)/utf8_.c:$(OBJDIR)/utf8.h \
	$(OBJDIR)/util_.c:$(OBJDIR)/util.h \
	$(OBJDIR)/verify_.c:$(OBJDIR)/verify.h \
	$(OBJDIR)/vfile_.c:$(OBJDIR)/vfile.h \
	$(OBJDIR)/wiki_.c:$(OBJDIR)/wiki.h \
	$(OBJDIR)/wikiformat_.c:$(OBJDIR)/wikiformat.h \
	$(OBJDIR)/winfile_.c:$(OBJDIR)/winfile.h \
	$(OBJDIR)/winhttp_.c:$(OBJDIR)/winhttp.h \
	$(OBJDIR)/xfer_.c:$(OBJDIR)/xfer.h \
	$(OBJDIR)/xfersetup_.c:$(OBJDIR)/xfersetup.h \
	$(OBJDIR)/zip_.c:$(OBJDIR)/zip.h \
	$(SRCDIR_extsrc)/pikchr.c:$(OBJDIR)/pikchr.h \
	$(SRCDIR_extsrc)/sqlite3.h \
	$(SRCDIR)/th.h \
	$(OBJDIR)/VERSION.h
	echo Done >$(OBJDIR)/headers

$(OBJDIR)/headers: Makefile

Makefile:

$(OBJDIR)/add_.c:	$(SRCDIR)/add.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/add.c >$@

$(OBJDIR)/add.o:	$(OBJDIR)/add_.c $(OBJDIR)/add.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/add.o -c $(OBJDIR)/add_.c

$(OBJDIR)/add.h:	$(OBJDIR)/headers

$(OBJDIR)/ajax_.c:	$(SRCDIR)/ajax.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/ajax.c >$@

$(OBJDIR)/ajax.o:	$(OBJDIR)/ajax_.c $(OBJDIR)/ajax.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/ajax.o -c $(OBJDIR)/ajax_.c

$(OBJDIR)/ajax.h:	$(OBJDIR)/headers

$(OBJDIR)/alerts_.c:	$(SRCDIR)/alerts.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/alerts.c >$@

$(OBJDIR)/alerts.o:	$(OBJDIR)/alerts_.c $(OBJDIR)/alerts.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/alerts.o -c $(OBJDIR)/alerts_.c

$(OBJDIR)/alerts.h:	$(OBJDIR)/headers

$(OBJDIR)/allrepo_.c:	$(SRCDIR)/allrepo.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/allrepo.c >$@

$(OBJDIR)/allrepo.o:	$(OBJDIR)/allrepo_.c $(OBJDIR)/allrepo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/allrepo.o -c $(OBJDIR)/allrepo_.c

$(OBJDIR)/allrepo.h:	$(OBJDIR)/headers

$(OBJDIR)/attach_.c:	$(SRCDIR)/attach.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/attach.c >$@

$(OBJDIR)/attach.o:	$(OBJDIR)/attach_.c $(OBJDIR)/attach.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/attach.o -c $(OBJDIR)/attach_.c

$(OBJDIR)/attach.h:	$(OBJDIR)/headers

$(OBJDIR)/backlink_.c:	$(SRCDIR)/backlink.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/backlink.c >$@

$(OBJDIR)/backlink.o:	$(OBJDIR)/backlink_.c $(OBJDIR)/backlink.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/backlink.o -c $(OBJDIR)/backlink_.c

$(OBJDIR)/backlink.h:	$(OBJDIR)/headers

$(OBJDIR)/backoffice_.c:	$(SRCDIR)/backoffice.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/backoffice.c >$@

$(OBJDIR)/backoffice.o:	$(OBJDIR)/backoffice_.c $(OBJDIR)/backoffice.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/backoffice.o -c $(OBJDIR)/backoffice_.c

$(OBJDIR)/backoffice.h:	$(OBJDIR)/headers

$(OBJDIR)/bag_.c:	$(SRCDIR)/bag.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/bag.c >$@

$(OBJDIR)/bag.o:	$(OBJDIR)/bag_.c $(OBJDIR)/bag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bag.o -c $(OBJDIR)/bag_.c

$(OBJDIR)/bag.h:	$(OBJDIR)/headers

$(OBJDIR)/bisect_.c:	$(SRCDIR)/bisect.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/bisect.c >$@

$(OBJDIR)/bisect.o:	$(OBJDIR)/bisect_.c $(OBJDIR)/bisect.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bisect.o -c $(OBJDIR)/bisect_.c

$(OBJDIR)/bisect.h:	$(OBJDIR)/headers

$(OBJDIR)/blob_.c:	$(SRCDIR)/blob.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/blob.c >$@

$(OBJDIR)/blob.o:	$(OBJDIR)/blob_.c $(OBJDIR)/blob.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/blob.o -c $(OBJDIR)/blob_.c

$(OBJDIR)/blob.h:	$(OBJDIR)/headers

$(OBJDIR)/branch_.c:	$(SRCDIR)/branch.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/branch.c >$@

$(OBJDIR)/branch.o:	$(OBJDIR)/branch_.c $(OBJDIR)/branch.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/branch.o -c $(OBJDIR)/branch_.c

$(OBJDIR)/branch.h:	$(OBJDIR)/headers

$(OBJDIR)/browse_.c:	$(SRCDIR)/browse.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/browse.c >$@

$(OBJDIR)/browse.o:	$(OBJDIR)/browse_.c $(OBJDIR)/browse.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/browse.o -c $(OBJDIR)/browse_.c

$(OBJDIR)/browse.h:	$(OBJDIR)/headers

$(OBJDIR)/builtin_.c:	$(SRCDIR)/builtin.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/builtin.c >$@

$(OBJDIR)/builtin.o:	$(OBJDIR)/builtin_.c $(OBJDIR)/builtin.h $(OBJDIR)/builtin_data.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/builtin.o -c $(OBJDIR)/builtin_.c

$(OBJDIR)/builtin.h:	$(OBJDIR)/headers

$(OBJDIR)/bundle_.c:	$(SRCDIR)/bundle.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/bundle.c >$@

$(OBJDIR)/bundle.o:	$(OBJDIR)/bundle_.c $(OBJDIR)/bundle.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/bundle.o -c $(OBJDIR)/bundle_.c

$(OBJDIR)/bundle.h:	$(OBJDIR)/headers

$(OBJDIR)/cache_.c:	$(SRCDIR)/cache.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/cache.c >$@

$(OBJDIR)/cache.o:	$(OBJDIR)/cache_.c $(OBJDIR)/cache.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cache.o -c $(OBJDIR)/cache_.c

$(OBJDIR)/cache.h:	$(OBJDIR)/headers

$(OBJDIR)/capabilities_.c:	$(SRCDIR)/capabilities.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/capabilities.c >$@

$(OBJDIR)/capabilities.o:	$(OBJDIR)/capabilities_.c $(OBJDIR)/capabilities.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/capabilities.o -c $(OBJDIR)/capabilities_.c

$(OBJDIR)/capabilities.h:	$(OBJDIR)/headers

$(OBJDIR)/captcha_.c:	$(SRCDIR)/captcha.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/captcha.c >$@

$(OBJDIR)/captcha.o:	$(OBJDIR)/captcha_.c $(OBJDIR)/captcha.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/captcha.o -c $(OBJDIR)/captcha_.c

$(OBJDIR)/captcha.h:	$(OBJDIR)/headers

$(OBJDIR)/cgi_.c:	$(SRCDIR)/cgi.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/cgi.c >$@

$(OBJDIR)/cgi.o:	$(OBJDIR)/cgi_.c $(OBJDIR)/cgi.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cgi.o -c $(OBJDIR)/cgi_.c

$(OBJDIR)/cgi.h:	$(OBJDIR)/headers

$(OBJDIR)/chat_.c:	$(SRCDIR)/chat.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/chat.c >$@

$(OBJDIR)/chat.o:	$(OBJDIR)/chat_.c $(OBJDIR)/chat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/chat.o -c $(OBJDIR)/chat_.c

$(OBJDIR)/chat.h:	$(OBJDIR)/headers

$(OBJDIR)/checkin_.c:	$(SRCDIR)/checkin.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/checkin.c >$@

$(OBJDIR)/checkin.o:	$(OBJDIR)/checkin_.c $(OBJDIR)/checkin.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/checkin.o -c $(OBJDIR)/checkin_.c

$(OBJDIR)/checkin.h:	$(OBJDIR)/headers

$(OBJDIR)/checkout_.c:	$(SRCDIR)/checkout.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/checkout.c >$@

$(OBJDIR)/checkout.o:	$(OBJDIR)/checkout_.c $(OBJDIR)/checkout.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/checkout.o -c $(OBJDIR)/checkout_.c

$(OBJDIR)/checkout.h:	$(OBJDIR)/headers

$(OBJDIR)/clearsign_.c:	$(SRCDIR)/clearsign.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/clearsign.c >$@

$(OBJDIR)/clearsign.o:	$(OBJDIR)/clearsign_.c $(OBJDIR)/clearsign.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/clearsign.o -c $(OBJDIR)/clearsign_.c

$(OBJDIR)/clearsign.h:	$(OBJDIR)/headers

$(OBJDIR)/clone_.c:	$(SRCDIR)/clone.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/clone.c >$@

$(OBJDIR)/clone.o:	$(OBJDIR)/clone_.c $(OBJDIR)/clone.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/clone.o -c $(OBJDIR)/clone_.c

$(OBJDIR)/clone.h:	$(OBJDIR)/headers

$(OBJDIR)/color_.c:	$(SRCDIR)/color.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/color.c >$@

$(OBJDIR)/color.o:	$(OBJDIR)/color_.c $(OBJDIR)/color.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/color.o -c $(OBJDIR)/color_.c

$(OBJDIR)/color.h:	$(OBJDIR)/headers

$(OBJDIR)/comformat_.c:	$(SRCDIR)/comformat.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/comformat.c >$@

$(OBJDIR)/comformat.o:	$(OBJDIR)/comformat_.c $(OBJDIR)/comformat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/comformat.o -c $(OBJDIR)/comformat_.c

$(OBJDIR)/comformat.h:	$(OBJDIR)/headers

$(OBJDIR)/configure_.c:	$(SRCDIR)/configure.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/configure.c >$@

$(OBJDIR)/configure.o:	$(OBJDIR)/configure_.c $(OBJDIR)/configure.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/configure.o -c $(OBJDIR)/configure_.c

$(OBJDIR)/configure.h:	$(OBJDIR)/headers

$(OBJDIR)/content_.c:	$(SRCDIR)/content.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/content.c >$@

$(OBJDIR)/content.o:	$(OBJDIR)/content_.c $(OBJDIR)/content.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/content.o -c $(OBJDIR)/content_.c

$(OBJDIR)/content.h:	$(OBJDIR)/headers

$(OBJDIR)/cookies_.c:	$(SRCDIR)/cookies.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/cookies.c >$@

$(OBJDIR)/cookies.o:	$(OBJDIR)/cookies_.c $(OBJDIR)/cookies.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/cookies.o -c $(OBJDIR)/cookies_.c

$(OBJDIR)/cookies.h:	$(OBJDIR)/headers

$(OBJDIR)/db_.c:	$(SRCDIR)/db.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/db.c >$@

$(OBJDIR)/db.o:	$(OBJDIR)/db_.c $(OBJDIR)/db.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/db.o -c $(OBJDIR)/db_.c

$(OBJDIR)/db.h:	$(OBJDIR)/headers

$(OBJDIR)/delta_.c:	$(SRCDIR)/delta.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/delta.c >$@

$(OBJDIR)/delta.o:	$(OBJDIR)/delta_.c $(OBJDIR)/delta.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/delta.o -c $(OBJDIR)/delta_.c

$(OBJDIR)/delta.h:	$(OBJDIR)/headers

$(OBJDIR)/deltacmd_.c:	$(SRCDIR)/deltacmd.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/deltacmd.c >$@

$(OBJDIR)/deltacmd.o:	$(OBJDIR)/deltacmd_.c $(OBJDIR)/deltacmd.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/deltacmd.o -c $(OBJDIR)/deltacmd_.c

$(OBJDIR)/deltacmd.h:	$(OBJDIR)/headers

$(OBJDIR)/deltafunc_.c:	$(SRCDIR)/deltafunc.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/deltafunc.c >$@

$(OBJDIR)/deltafunc.o:	$(OBJDIR)/deltafunc_.c $(OBJDIR)/deltafunc.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/deltafunc.o -c $(OBJDIR)/deltafunc_.c

$(OBJDIR)/deltafunc.h:	$(OBJDIR)/headers

$(OBJDIR)/descendants_.c:	$(SRCDIR)/descendants.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/descendants.c >$@

$(OBJDIR)/descendants.o:	$(OBJDIR)/descendants_.c $(OBJDIR)/descendants.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/descendants.o -c $(OBJDIR)/descendants_.c

$(OBJDIR)/descendants.h:	$(OBJDIR)/headers

$(OBJDIR)/diff_.c:	$(SRCDIR)/diff.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/diff.c >$@

$(OBJDIR)/diff.o:	$(OBJDIR)/diff_.c $(OBJDIR)/diff.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/diff.o -c $(OBJDIR)/diff_.c

$(OBJDIR)/diff.h:	$(OBJDIR)/headers

$(OBJDIR)/diffcmd_.c:	$(SRCDIR)/diffcmd.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/diffcmd.c >$@

$(OBJDIR)/diffcmd.o:	$(OBJDIR)/diffcmd_.c $(OBJDIR)/diffcmd.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/diffcmd.o -c $(OBJDIR)/diffcmd_.c

$(OBJDIR)/diffcmd.h:	$(OBJDIR)/headers

$(OBJDIR)/dispatch_.c:	$(SRCDIR)/dispatch.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/dispatch.c >$@

$(OBJDIR)/dispatch.o:	$(OBJDIR)/dispatch_.c $(OBJDIR)/dispatch.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/dispatch.o -c $(OBJDIR)/dispatch_.c

$(OBJDIR)/dispatch.h:	$(OBJDIR)/headers

$(OBJDIR)/doc_.c:	$(SRCDIR)/doc.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/doc.c >$@

$(OBJDIR)/doc.o:	$(OBJDIR)/doc_.c $(OBJDIR)/doc.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/doc.o -c $(OBJDIR)/doc_.c

$(OBJDIR)/doc.h:	$(OBJDIR)/headers

$(OBJDIR)/encode_.c:	$(SRCDIR)/encode.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/encode.c >$@

$(OBJDIR)/encode.o:	$(OBJDIR)/encode_.c $(OBJDIR)/encode.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/encode.o -c $(OBJDIR)/encode_.c

$(OBJDIR)/encode.h:	$(OBJDIR)/headers

$(OBJDIR)/etag_.c:	$(SRCDIR)/etag.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/etag.c >$@

$(OBJDIR)/etag.o:	$(OBJDIR)/etag_.c $(OBJDIR)/etag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/etag.o -c $(OBJDIR)/etag_.c

$(OBJDIR)/etag.h:	$(OBJDIR)/headers

$(OBJDIR)/event_.c:	$(SRCDIR)/event.c $(TRANSLATE)
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$(OBJDIR)/rss_.c:	$(SRCDIR)/rss.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/rss.c >$@

$(OBJDIR)/rss.o:	$(OBJDIR)/rss_.c $(OBJDIR)/rss.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/rss.o -c $(OBJDIR)/rss_.c

$(OBJDIR)/rss.h:	$(OBJDIR)/headers

$(OBJDIR)/schema_.c:	$(SRCDIR)/schema.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/schema.c >$@

$(OBJDIR)/schema.o:	$(OBJDIR)/schema_.c $(OBJDIR)/schema.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/schema.o -c $(OBJDIR)/schema_.c

$(OBJDIR)/schema.h:	$(OBJDIR)/headers

$(OBJDIR)/search_.c:	$(SRCDIR)/search.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/search.c >$@

$(OBJDIR)/search.o:	$(OBJDIR)/search_.c $(OBJDIR)/search.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/search.o -c $(OBJDIR)/search_.c

$(OBJDIR)/search.h:	$(OBJDIR)/headers

$(OBJDIR)/security_audit_.c:	$(SRCDIR)/security_audit.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/security_audit.c >$@

$(OBJDIR)/security_audit.o:	$(OBJDIR)/security_audit_.c $(OBJDIR)/security_audit.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/security_audit.o -c $(OBJDIR)/security_audit_.c

$(OBJDIR)/security_audit.h:	$(OBJDIR)/headers

$(OBJDIR)/setup_.c:	$(SRCDIR)/setup.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/setup.c >$@

$(OBJDIR)/setup.o:	$(OBJDIR)/setup_.c $(OBJDIR)/setup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/setup.o -c $(OBJDIR)/setup_.c

$(OBJDIR)/setup.h:	$(OBJDIR)/headers

$(OBJDIR)/setupuser_.c:	$(SRCDIR)/setupuser.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/setupuser.c >$@

$(OBJDIR)/setupuser.o:	$(OBJDIR)/setupuser_.c $(OBJDIR)/setupuser.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/setupuser.o -c $(OBJDIR)/setupuser_.c

$(OBJDIR)/setupuser.h:	$(OBJDIR)/headers

$(OBJDIR)/sha1_.c:	$(SRCDIR)/sha1.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/sha1.c >$@

$(OBJDIR)/sha1.o:	$(OBJDIR)/sha1_.c $(OBJDIR)/sha1.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha1.o -c $(OBJDIR)/sha1_.c

$(OBJDIR)/sha1.h:	$(OBJDIR)/headers

$(OBJDIR)/sha1hard_.c:	$(SRCDIR)/sha1hard.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/sha1hard.c >$@

$(OBJDIR)/sha1hard.o:	$(OBJDIR)/sha1hard_.c $(OBJDIR)/sha1hard.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha1hard.o -c $(OBJDIR)/sha1hard_.c

$(OBJDIR)/sha1hard.h:	$(OBJDIR)/headers

$(OBJDIR)/sha3_.c:	$(SRCDIR)/sha3.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/sha3.c >$@

$(OBJDIR)/sha3.o:	$(OBJDIR)/sha3_.c $(OBJDIR)/sha3.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sha3.o -c $(OBJDIR)/sha3_.c

$(OBJDIR)/sha3.h:	$(OBJDIR)/headers

$(OBJDIR)/shun_.c:	$(SRCDIR)/shun.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/shun.c >$@

$(OBJDIR)/shun.o:	$(OBJDIR)/shun_.c $(OBJDIR)/shun.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/shun.o -c $(OBJDIR)/shun_.c

$(OBJDIR)/shun.h:	$(OBJDIR)/headers

$(OBJDIR)/sitemap_.c:	$(SRCDIR)/sitemap.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/sitemap.c >$@

$(OBJDIR)/sitemap.o:	$(OBJDIR)/sitemap_.c $(OBJDIR)/sitemap.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sitemap.o -c $(OBJDIR)/sitemap_.c

$(OBJDIR)/sitemap.h:	$(OBJDIR)/headers

$(OBJDIR)/skins_.c:	$(SRCDIR)/skins.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/skins.c >$@

$(OBJDIR)/skins.o:	$(OBJDIR)/skins_.c $(OBJDIR)/skins.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/skins.o -c $(OBJDIR)/skins_.c

$(OBJDIR)/skins.h:	$(OBJDIR)/headers

$(OBJDIR)/smtp_.c:	$(SRCDIR)/smtp.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/smtp.c >$@

$(OBJDIR)/smtp.o:	$(OBJDIR)/smtp_.c $(OBJDIR)/smtp.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/smtp.o -c $(OBJDIR)/smtp_.c

$(OBJDIR)/smtp.h:	$(OBJDIR)/headers

$(OBJDIR)/sqlcmd_.c:	$(SRCDIR)/sqlcmd.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/sqlcmd.c >$@

$(OBJDIR)/sqlcmd.o:	$(OBJDIR)/sqlcmd_.c $(OBJDIR)/sqlcmd.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sqlcmd.o -c $(OBJDIR)/sqlcmd_.c

$(OBJDIR)/sqlcmd.h:	$(OBJDIR)/headers

$(OBJDIR)/stash_.c:	$(SRCDIR)/stash.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/stash.c >$@

$(OBJDIR)/stash.o:	$(OBJDIR)/stash_.c $(OBJDIR)/stash.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/stash.o -c $(OBJDIR)/stash_.c

$(OBJDIR)/stash.h:	$(OBJDIR)/headers

$(OBJDIR)/stat_.c:	$(SRCDIR)/stat.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/stat.c >$@

$(OBJDIR)/stat.o:	$(OBJDIR)/stat_.c $(OBJDIR)/stat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/stat.o -c $(OBJDIR)/stat_.c

$(OBJDIR)/stat.h:	$(OBJDIR)/headers

$(OBJDIR)/statrep_.c:	$(SRCDIR)/statrep.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/statrep.c >$@

$(OBJDIR)/statrep.o:	$(OBJDIR)/statrep_.c $(OBJDIR)/statrep.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/statrep.o -c $(OBJDIR)/statrep_.c

$(OBJDIR)/statrep.h:	$(OBJDIR)/headers

$(OBJDIR)/style_.c:	$(SRCDIR)/style.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/style.c >$@

$(OBJDIR)/style.o:	$(OBJDIR)/style_.c $(OBJDIR)/style.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/style.o -c $(OBJDIR)/style_.c

$(OBJDIR)/style.h:	$(OBJDIR)/headers

$(OBJDIR)/sync_.c:	$(SRCDIR)/sync.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/sync.c >$@

$(OBJDIR)/sync.o:	$(OBJDIR)/sync_.c $(OBJDIR)/sync.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/sync.o -c $(OBJDIR)/sync_.c

$(OBJDIR)/sync.h:	$(OBJDIR)/headers

$(OBJDIR)/tag_.c:	$(SRCDIR)/tag.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/tag.c >$@

$(OBJDIR)/tag.o:	$(OBJDIR)/tag_.c $(OBJDIR)/tag.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tag.o -c $(OBJDIR)/tag_.c

$(OBJDIR)/tag.h:	$(OBJDIR)/headers

$(OBJDIR)/tar_.c:	$(SRCDIR)/tar.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/tar.c >$@

$(OBJDIR)/tar.o:	$(OBJDIR)/tar_.c $(OBJDIR)/tar.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tar.o -c $(OBJDIR)/tar_.c

$(OBJDIR)/tar.h:	$(OBJDIR)/headers

$(OBJDIR)/terminal_.c:	$(SRCDIR)/terminal.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/terminal.c >$@

$(OBJDIR)/terminal.o:	$(OBJDIR)/terminal_.c $(OBJDIR)/terminal.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/terminal.o -c $(OBJDIR)/terminal_.c

$(OBJDIR)/terminal.h:	$(OBJDIR)/headers

$(OBJDIR)/th_main_.c:	$(SRCDIR)/th_main.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/th_main.c >$@

$(OBJDIR)/th_main.o:	$(OBJDIR)/th_main_.c $(OBJDIR)/th_main.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/th_main.o -c $(OBJDIR)/th_main_.c

$(OBJDIR)/th_main.h:	$(OBJDIR)/headers

$(OBJDIR)/timeline_.c:	$(SRCDIR)/timeline.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/timeline.c >$@

$(OBJDIR)/timeline.o:	$(OBJDIR)/timeline_.c $(OBJDIR)/timeline.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/timeline.o -c $(OBJDIR)/timeline_.c

$(OBJDIR)/timeline.h:	$(OBJDIR)/headers

$(OBJDIR)/tkt_.c:	$(SRCDIR)/tkt.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/tkt.c >$@

$(OBJDIR)/tkt.o:	$(OBJDIR)/tkt_.c $(OBJDIR)/tkt.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tkt.o -c $(OBJDIR)/tkt_.c

$(OBJDIR)/tkt.h:	$(OBJDIR)/headers

$(OBJDIR)/tktsetup_.c:	$(SRCDIR)/tktsetup.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/tktsetup.c >$@

$(OBJDIR)/tktsetup.o:	$(OBJDIR)/tktsetup_.c $(OBJDIR)/tktsetup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tktsetup.o -c $(OBJDIR)/tktsetup_.c

$(OBJDIR)/tktsetup.h:	$(OBJDIR)/headers

$(OBJDIR)/undo_.c:	$(SRCDIR)/undo.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/undo.c >$@

$(OBJDIR)/undo.o:	$(OBJDIR)/undo_.c $(OBJDIR)/undo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/undo.o -c $(OBJDIR)/undo_.c

$(OBJDIR)/undo.h:	$(OBJDIR)/headers

$(OBJDIR)/unicode_.c:	$(SRCDIR)/unicode.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/unicode.c >$@

$(OBJDIR)/unicode.o:	$(OBJDIR)/unicode_.c $(OBJDIR)/unicode.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/unicode.o -c $(OBJDIR)/unicode_.c

$(OBJDIR)/unicode.h:	$(OBJDIR)/headers

$(OBJDIR)/unversioned_.c:	$(SRCDIR)/unversioned.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/unversioned.c >$@

$(OBJDIR)/unversioned.o:	$(OBJDIR)/unversioned_.c $(OBJDIR)/unversioned.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/unversioned.o -c $(OBJDIR)/unversioned_.c

$(OBJDIR)/unversioned.h:	$(OBJDIR)/headers

$(OBJDIR)/update_.c:	$(SRCDIR)/update.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/update.c >$@

$(OBJDIR)/update.o:	$(OBJDIR)/update_.c $(OBJDIR)/update.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/update.o -c $(OBJDIR)/update_.c

$(OBJDIR)/update.h:	$(OBJDIR)/headers

$(OBJDIR)/url_.c:	$(SRCDIR)/url.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/url.c >$@

$(OBJDIR)/url.o:	$(OBJDIR)/url_.c $(OBJDIR)/url.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/url.o -c $(OBJDIR)/url_.c

$(OBJDIR)/url.h:	$(OBJDIR)/headers

$(OBJDIR)/user_.c:	$(SRCDIR)/user.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/user.c >$@

$(OBJDIR)/user.o:	$(OBJDIR)/user_.c $(OBJDIR)/user.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/user.o -c $(OBJDIR)/user_.c

$(OBJDIR)/user.h:	$(OBJDIR)/headers

$(OBJDIR)/utf8_.c:	$(SRCDIR)/utf8.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/utf8.c >$@

$(OBJDIR)/utf8.o:	$(OBJDIR)/utf8_.c $(OBJDIR)/utf8.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/utf8.o -c $(OBJDIR)/utf8_.c

$(OBJDIR)/utf8.h:	$(OBJDIR)/headers

$(OBJDIR)/util_.c:	$(SRCDIR)/util.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/util.c >$@

$(OBJDIR)/util.o:	$(OBJDIR)/util_.c $(OBJDIR)/util.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/util.o -c $(OBJDIR)/util_.c

$(OBJDIR)/util.h:	$(OBJDIR)/headers

$(OBJDIR)/verify_.c:	$(SRCDIR)/verify.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/verify.c >$@

$(OBJDIR)/verify.o:	$(OBJDIR)/verify_.c $(OBJDIR)/verify.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/verify.o -c $(OBJDIR)/verify_.c

$(OBJDIR)/verify.h:	$(OBJDIR)/headers

$(OBJDIR)/vfile_.c:	$(SRCDIR)/vfile.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/vfile.c >$@

$(OBJDIR)/vfile.o:	$(OBJDIR)/vfile_.c $(OBJDIR)/vfile.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/vfile.o -c $(OBJDIR)/vfile_.c

$(OBJDIR)/vfile.h:	$(OBJDIR)/headers

$(OBJDIR)/wiki_.c:	$(SRCDIR)/wiki.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/wiki.c >$@

$(OBJDIR)/wiki.o:	$(OBJDIR)/wiki_.c $(OBJDIR)/wiki.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wiki.o -c $(OBJDIR)/wiki_.c

$(OBJDIR)/wiki.h:	$(OBJDIR)/headers

$(OBJDIR)/wikiformat_.c:	$(SRCDIR)/wikiformat.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/wikiformat.c >$@

$(OBJDIR)/wikiformat.o:	$(OBJDIR)/wikiformat_.c $(OBJDIR)/wikiformat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wikiformat.o -c $(OBJDIR)/wikiformat_.c

$(OBJDIR)/wikiformat.h:	$(OBJDIR)/headers

$(OBJDIR)/winfile_.c:	$(SRCDIR)/winfile.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/winfile.c >$@

$(OBJDIR)/winfile.o:	$(OBJDIR)/winfile_.c $(OBJDIR)/winfile.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winfile.o -c $(OBJDIR)/winfile_.c

$(OBJDIR)/winfile.h:	$(OBJDIR)/headers

$(OBJDIR)/winhttp_.c:	$(SRCDIR)/winhttp.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/winhttp.c >$@

$(OBJDIR)/winhttp.o:	$(OBJDIR)/winhttp_.c $(OBJDIR)/winhttp.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winhttp.o -c $(OBJDIR)/winhttp_.c

$(OBJDIR)/winhttp.h:	$(OBJDIR)/headers

$(OBJDIR)/xfer_.c:	$(SRCDIR)/xfer.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/xfer.c >$@

$(OBJDIR)/xfer.o:	$(OBJDIR)/xfer_.c $(OBJDIR)/xfer.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfer.o -c $(OBJDIR)/xfer_.c

$(OBJDIR)/xfer.h:	$(OBJDIR)/headers

$(OBJDIR)/xfersetup_.c:	$(SRCDIR)/xfersetup.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/xfersetup.c >$@

$(OBJDIR)/xfersetup.o:	$(OBJDIR)/xfersetup_.c $(OBJDIR)/xfersetup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfersetup.o -c $(OBJDIR)/xfersetup_.c

$(OBJDIR)/xfersetup.h:	$(OBJDIR)/headers

$(OBJDIR)/zip_.c:	$(SRCDIR)/zip.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/zip.c >$@

$(OBJDIR)/zip.o:	$(OBJDIR)/zip_.c $(OBJDIR)/zip.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/zip.o -c $(OBJDIR)/zip_.c

$(OBJDIR)/zip.h:	$(OBJDIR)/headers

MINGW_OPTIONS = -D_HAVE__MINGW_H

SQLITE_OPTIONS = -DNDEBUG=1 \
                 -DSQLITE_DQS=0 \
                 -DSQLITE_THREADSAFE=0 \
                 -DSQLITE_DEFAULT_MEMSTATUS=0 \
                 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                 -DSQLITE_OMIT_DECLTYPE \
                 -DSQLITE_OMIT_DEPRECATED \
                 -DSQLITE_OMIT_PROGRESS_CALLBACK \
                 -DSQLITE_OMIT_SHARED_CACHE \
                 -DSQLITE_OMIT_LOAD_EXTENSION \
                 -DSQLITE_MAX_EXPR_DEPTH=0 \
                 -DSQLITE_ENABLE_LOCKING_STYLE=0 \
                 -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 -DSQLITE_ENABLE_FTS4 \
                 -DSQLITE_ENABLE_DBSTAT_VTAB \
                 -DSQLITE_ENABLE_FTS5 \
                 -DSQLITE_ENABLE_STMTVTAB \
                 -DSQLITE_HAVE_ZLIB \
                 -DSQLITE_ENABLE_DBPAGE_VTAB \
                 -DSQLITE_TRUSTED_SCHEMA=0 \
                 -DHAVE_USLEEP \
                 -DSQLITE_WIN32_NO_ANSI \
                 $(MINGW_OPTIONS) \
                 -DSQLITE_USE_MALLOC_H \
                 -DSQLITE_USE_MSIZE

SHELL_OPTIONS = -DNDEBUG=1 \
                 -DSQLITE_DQS=0 \
                 -DSQLITE_THREADSAFE=0 \
                 -DSQLITE_DEFAULT_MEMSTATUS=0 \
                 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                 -DSQLITE_OMIT_DECLTYPE \
                 -DSQLITE_OMIT_DEPRECATED \
                 -DSQLITE_OMIT_PROGRESS_CALLBACK \
                 -DSQLITE_OMIT_SHARED_CACHE \
                 -DSQLITE_OMIT_LOAD_EXTENSION \
                 -DSQLITE_MAX_EXPR_DEPTH=0 \
                 -DSQLITE_ENABLE_LOCKING_STYLE=0 \
                 -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 -DSQLITE_ENABLE_FTS4 \
                 -DSQLITE_ENABLE_DBSTAT_VTAB \
                 -DSQLITE_ENABLE_FTS5 \
                 -DSQLITE_ENABLE_STMTVTAB \
                 -DSQLITE_HAVE_ZLIB \
                 -DSQLITE_ENABLE_DBPAGE_VTAB \
                 -DSQLITE_TRUSTED_SCHEMA=0 \
                 -DHAVE_USLEEP \
                 -Dmain=sqlite3_shell \
                 -DSQLITE_SHELL_IS_UTF8=1 \
                 -DSQLITE_OMIT_LOAD_EXTENSION=1 \
                 -DUSE_SYSTEM_SQLITE=$(USE_SYSTEM_SQLITE) \
                 -DSQLITE_SHELL_DBNAME_PROC=sqlcmd_get_dbname \
                 -DSQLITE_SHELL_INIT_PROC=sqlcmd_init_proc \
                 -Daccess=file_access \
                 -Dsystem=fossil_system \
                 -Dgetenv=fossil_getenv \
                 -Dfopen=fossil_fopen

PIKCHR_OPTIONS = -DPIKCHR_TOKEN_LIMIT=10000

$(SQLITE3_OBJ):	$(SQLITE3_SRC) $(SRCDIR)/../win/Makefile.mingw
	$(XTCC) $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $(SEE_FLAGS) \
		-c $(SQLITE3_SRC) -o $@

$(OBJDIR)/cson_amalgamation.o:	$(SRCDIR_extsrc)/cson_amalgamation.c
	$(XTCC) -c $(SRCDIR_extsrc)/cson_amalgamation.c -o $@

$(OBJDIR)/json.o $(OBJDIR)/json_artifact.o $(OBJDIR)/json_branch.o $(OBJDIR)/json_config.o $(OBJDIR)/json_diff.o $(OBJDIR)/json_dir.o $(OBJDIR)/jsos_finfo.o $(OBJDIR)/json_login.o $(OBJDIR)/json_query.o $(OBJDIR)/json_report.o $(OBJDIR)/json_status.o $(OBJDIR)/json_tag.o $(OBJDIR)/json_timeline.o $(OBJDIR)/json_user.o $(OBJDIR)/json_wiki.o : $(SRCDIR)/json_detail.h

$(OBJDIR)/shell.o:	$(SQLITE3_SHELL_SRC) $(SRCDIR_extsrc)/sqlite3.h $(SRCDIR)/../win/Makefile.mingw
	$(XTCC) $(SHELL_OPTIONS) $(SHELL_CFLAGS) $(SEE_FLAGS) -c $(SQLITE3_SHELL_SRC) -o $@

$(OBJDIR)/th.o:	$(SRCDIR)/th.c
	$(XTCC) -c $(SRCDIR)/th.c -o $@

$(OBJDIR)/th_lang.o:	$(SRCDIR)/th_lang.c
	$(XTCC) -c $(SRCDIR)/th_lang.c -o $@

$(OBJDIR)/th_tcl.o:	$(SRCDIR)/th_tcl.c
	$(XTCC) -c $(SRCDIR)/th_tcl.c -o $@

$(OBJDIR)/pikchr.o:	$(SRCDIR_extsrc)/pikchr.c
	$(XTCC) $(PIKCHR_OPTIONS) -c $(SRCDIR_extsrc)/pikchr.c -o $@

Added win/Makefile.mingw.mistachkin.




























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#!/usr/bin/make
#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
# This is a makefile for use on Cygwin/Darwin/FreeBSD/Linux/Windows using
# MinGW or MinGW-w64.
#
# Some of the special options which can be passed to make
#   USE_WINDOWS=1    if building under a windows command prompt
#   X64=1            if using an unprefixed 64-bit mingw compiler
#

#### Select one of MinGW, MinGW-w64 (32-bit) or MinGW-w64 (64-bit) compilers.
#    By default, this is an empty string (i.e. use the native compiler).
#
PREFIX =
# PREFIX = mingw32-
# PREFIX = i686-pc-mingw32-
# PREFIX = i686-w64-mingw32-
# PREFIX = x86_64-w64-mingw32-

#### The toplevel directory of the source tree.  Fossil can be built
#    in a directory that is separate from the source tree.  Just change
#    the following to point from the build directory to the src/ folder.
#
SRCDIR = src
SRCDIR_extsrc = extsrc
SRCDIR_tools = tools

#### The directory into which object code files should be written.
#
OBJDIR = wbld

#### C compiler for use in building executables that will run on
#    the platform that is doing the build.  This is used to compile
#    code-generator programs as part of the build process.  See TCC
#    and TCCEXE below for the C compiler for building the finished
#    binary.
#
BCCEXE = gcc

#### C Compiler and options for use in building executables that
#    will run on the platform that is doing the build.  This is used
#    to compile code-generator programs as part of the build process.
#    See TCC below for the C compiler for building the finished binary.
#
BCC = $(BCCEXE)

#### Enable compiling with debug symbols (much larger binary)
#
# FOSSIL_ENABLE_SYMBOLS = 1

#### Enable JSON (https://www.json.org) support using "cson"
#
FOSSIL_ENABLE_JSON = 1

#### Enable HTTPS support via OpenSSL (links to libssl and libcrypto)
#
FOSSIL_ENABLE_SSL = 1

#### Automatically build OpenSSL when building Fossil (causes rebuild
#    issues when building incrementally).
#
# FOSSIL_BUILD_SSL = 1

#### Enable relative paths in external diff/gdiff
#
# FOSSIL_ENABLE_EXEC_REL_PATHS = 1

#### Enable TH1 scripts in embedded documentation files
#
FOSSIL_ENABLE_TH1_DOCS = 1

#### Enable hooks for commands and web pages via TH1
#
FOSSIL_ENABLE_TH1_HOOKS = 1

#### Enable scripting support via Tcl/Tk
#
FOSSIL_ENABLE_TCL = 1

#### Load Tcl using the stubs library mechanism
#
FOSSIL_ENABLE_TCL_STUBS = 1

#### Load Tcl using the private stubs mechanism
#
FOSSIL_ENABLE_TCL_PRIVATE_STUBS = 1

#### Use 'system' SQLite
#
# USE_SYSTEM_SQLITE = 1

#### Use POSIX memory APIs from "sys/mman.h"
#
# USE_MMAN_H = 1

#### Use the SQLite Encryption Extension
#
# USE_SEE = 1

#### Use the Tcl source directory instead of the install directory?
#    This is useful when Tcl has been compiled statically with MinGW.
#
FOSSIL_TCL_SOURCE = 1

#### Check if the workaround for the MinGW command line handling needs to
#    be enabled by default.  This check may be somewhat fragile due to the
#    use of "findstring".
#
ifndef MINGW_IS_32BIT_ONLY
ifeq (,$(findstring w64-mingw32,$(PREFIX)))
MINGW_IS_32BIT_ONLY = 1
endif
endif

#### The directories where the zlib include and library files are located.
#
ZINCDIR = $(SRCDIR)/../compat/zlib
ZLIBDIR = $(SRCDIR)/../compat/zlib

#### Make an attempt to detect if Fossil is being built for the x64 processor
#    architecture.  This check may be somewhat fragile due to "findstring".
#
ifndef X64
ifneq (,$(findstring x86_64-w64-mingw32,$(PREFIX)))
X64 = 1
endif
endif

#### Determine if the optimized assembly routines provided with zlib should be
#    used, taking into account whether zlib is actually enabled and the target
#    processor architecture.
#
ifndef X64
SSLCONFIG = mingw
ZLIBCONFIG =
ZLIBTARGETS =
else
SSLCONFIG = mingw64
ZLIBCONFIG =
ZLIBTARGETS =
endif

#### Disable creation of the OpenSSL shared libraries.  Also, disable support
#    for SSLv3 (i.e. thereby forcing the use of TLS).
#
SSLCONFIG += no-ssl3 no-weak-ssl-ciphers no-shared

#### When using zlib, make sure that OpenSSL is configured to use the zlib
#    that Fossil knows about (i.e. the one within the source tree).
#
SSLCONFIG +=  --with-zlib-lib=$(PWD)/$(ZLIBDIR) --with-zlib-include=$(PWD)/$(ZLIBDIR) zlib

#### The directories where the OpenSSL include and library files are located.
#
OPENSSLDIR = $(SRCDIR)/../compat/openssl
OPENSSLINCDIR = $(OPENSSLDIR)/include
OPENSSLLIBDIR = $(OPENSSLDIR)

#### Either the directory where the Tcl library is installed or the Tcl
#    source code directory resides (depending on the value of the macro
#    FOSSIL_TCL_SOURCE).  If this points to the Tcl install directory,
#    this directory must have "include" and "lib" sub-directories.  If
#    this points to the Tcl source code directory, this directory must
#    have "generic" and "win" sub-directories.  The recommended usage
#    here is to use the Sysinternals junction tool to create a hard
#    link between a "tcl-8.x" sub-directory of the Fossil source code
#    directory and the target Tcl directory.  This removes the need to
#    hard-code the necessary paths in this Makefile.
#
TCLDIR = $(SRCDIR)/../compat/tcl-8.6

#### The Tcl source code directory.  This defaults to the same value as
#    TCLDIR macro (above), which may not be correct.  This value will
#    only be used if the FOSSIL_TCL_SOURCE macro is defined.
#
TCLSRCDIR = $(TCLDIR)

#### The Tcl include and library directories.  These values will only be
#    used if the FOSSIL_TCL_SOURCE macro is not defined.
#
TCLINCDIR = $(TCLDIR)/include
TCLLIBDIR = $(TCLDIR)/lib

#### Tcl: Which Tcl library do we want to use (8.4, 8.5, 8.6, etc)?
#
ifdef FOSSIL_ENABLE_TCL_STUBS
ifndef FOSSIL_ENABLE_TCL_PRIVATE_STUBS
LIBTCL = -ltclstub86
endif
TCLTARGET = libtclstub86.a
else
LIBTCL = -ltcl86
TCLTARGET = binaries
endif

#### C compiler for use in building executables that will run on the
#    target platform.  This is usually the same as BCCEXE, unless you
#    are cross-compiling.  This C compiler builds the finished binary
#    for fossil.  See BCC and BCCEXE above for the C compiler for
#    building intermediate code-generator tools.
#
TCCEXE = gcc

#### C compiler and options for use in building executables that will
#    run on the target platform.  This is usually the almost the same
#    as BCC, unless you are cross-compiling.  This C compiler builds
#    the finished binary for fossil.  The BCC compiler above is used
#    for building intermediate code-generator tools.
#
TCC = $(PREFIX)$(TCCEXE) -Wall -Wdeclaration-after-statement
TCC += -I$(SRCDIR_extsrc)

#### Add the necessary command line options to build with debugging
#    symbols, if enabled.
#
ifdef FOSSIL_ENABLE_SYMBOLS
TCC += -g
else
TCC += -Os
endif

TCC += -L$(ZLIBDIR) -I$(ZINCDIR)

#### Compile resources for use in building executables that will run
#    on the target platform.
#
RCC = $(PREFIX)windres -I$(SRCDIR) -I$(ZINCDIR)
RCC += -I$(SRCDIR_extsrc)

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -L$(OPENSSLLIBDIR) -I$(OPENSSLINCDIR)
RCC += -I$(OPENSSLINCDIR)
endif

# With Tcl support
ifdef FOSSIL_ENABLE_TCL
ifdef FOSSIL_TCL_SOURCE
TCC += -L$(TCLSRCDIR)/win -I$(TCLSRCDIR)/generic -I$(TCLSRCDIR)/win
RCC += -I$(TCLSRCDIR)/generic -I$(TCLSRCDIR)/win
else
TCC += -L$(TCLLIBDIR) -I$(TCLINCDIR)
RCC += -I$(TCLINCDIR)
endif
endif

# With MinGW command line handling workaround
ifdef MINGW_IS_32BIT_ONLY
TCC += -DBROKEN_MINGW_CMDLINE=1
RCC += -DBROKEN_MINGW_CMDLINE=1
endif

# With HTTPS support
ifdef FOSSIL_ENABLE_SSL
TCC += -DFOSSIL_ENABLE_SSL=1
RCC += -DFOSSIL_ENABLE_SSL=1
endif

# With relative paths in external diff/gdiff
ifdef FOSSIL_ENABLE_EXEC_REL_PATHS
TCC += -DFOSSIL_ENABLE_EXEC_REL_PATHS=1
RCC += -DFOSSIL_ENABLE_EXEC_REL_PATHS=1
endif

# With TH1 embedded docs support
ifdef FOSSIL_ENABLE_TH1_DOCS
TCC += -DFOSSIL_ENABLE_TH1_DOCS=1
RCC += -DFOSSIL_ENABLE_TH1_DOCS=1
endif

# With TH1 hook support
ifdef FOSSIL_ENABLE_TH1_HOOKS
TCC += -DFOSSIL_ENABLE_TH1_HOOKS=1
RCC += -DFOSSIL_ENABLE_TH1_HOOKS=1
endif

# With Tcl support
ifdef FOSSIL_ENABLE_TCL
TCC += -DFOSSIL_ENABLE_TCL=1
RCC += -DFOSSIL_ENABLE_TCL=1
# Either statically linked or via stubs
ifdef FOSSIL_ENABLE_TCL_STUBS
TCC += -DFOSSIL_ENABLE_TCL_STUBS=1 -DUSE_TCL_STUBS
RCC += -DFOSSIL_ENABLE_TCL_STUBS=1 -DUSE_TCL_STUBS
ifdef FOSSIL_ENABLE_TCL_PRIVATE_STUBS
TCC += -DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
RCC += -DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
endif
else
TCC += -DSTATIC_BUILD
RCC += -DSTATIC_BUILD
endif
endif

# With JSON support
ifdef FOSSIL_ENABLE_JSON
TCC += -DFOSSIL_ENABLE_JSON=1
RCC += -DFOSSIL_ENABLE_JSON=1
endif

# With "sys/mman.h" support
ifdef USE_MMAN_H
TCC += -DUSE_MMAN_H=1
RCC += -DUSE_MMAN_H=1
endif

# With SQLite Encryption Extension support
ifdef USE_SEE
TCC += -DUSE_SEE=1
RCC += -DUSE_SEE=1
endif

#### The option -static has no effect on MinGW(-w64), only dynamic
#    executables can be built when linking with MSVCRT.  OpenSSL
#    (optional) and zlib (required) however are always linked in
#    statically.  Therefore, the FOSSIL_DYNAMIC_BUILD option does
#    not really apply to MinGW (i.e. since ALL external libraries
#    are NOT linked dynamically).
#
# LIB = -static

#### MinGW: If available, use the Unicode capable runtime startup code.
#
ifndef MINGW_IS_32BIT_ONLY
LIB += -municode
endif

#### SQLite: If enabled, use the system SQLite library.
#
ifdef USE_SYSTEM_SQLITE
LIB += -lsqlite3
endif

#### OpenSSL: Add the necessary libraries required, if enabled.
#
ifdef FOSSIL_ENABLE_SSL
LIB += -lssl -lcrypto -lgdi32 -lcrypt32
endif

#### Tcl: Add the necessary libraries required, if enabled.
#
ifdef FOSSIL_ENABLE_TCL
LIB += $(LIBTCL)
endif

#### Extra arguments for linking the finished binary.  Fossil needs
#    to link against the Z-Lib compression library.  There are no
#    other mandatory dependencies.
#
LIB += -lmingwex

#### zlib is required.
#
LIB += -lz

#### These libraries MUST appear in the same order as they do for Tcl
#    or linking with it will not work (exact reason unknown).
#
ifdef FOSSIL_ENABLE_TCL
ifdef FOSSIL_ENABLE_TCL_STUBS
LIB += -lkernel32 -lws2_32
else
LIB += -lnetapi32 -lkernel32 -luser32 -ladvapi32 -lws2_32
endif
else
LIB += -lkernel32 -lws2_32
endif

#### Library required for DNS lookups.
#
LIB += -ldnsapi

#### Tcl shell for use in running the fossil test suite.  This is only
#    used for testing.
#
TCLSH = tclsh

#### Nullsoft installer MakeNSIS location
#
MAKENSIS = "$(PROGRAMFILES)\NSIS\MakeNSIS.exe"

#### Inno Setup executable location
#
INNOSETUP = "$(PROGRAMFILES)\Inno Setup 5\ISCC.exe"

#### Include a configuration file that can override any one of these settings.
#
-include config.w32

# STOP HERE
# You should not need to change anything below this line
#--------------------------------------------------------
XBCC = $(BCC) $(CFLAGS)
XTCC = $(TCC) $(CFLAGS) -I. -I$(SRCDIR)

SRC = \
  $(SRCDIR)/add.c \
  $(SRCDIR)/ajax.c \
  $(SRCDIR)/alerts.c \
  $(SRCDIR)/allrepo.c \
  $(SRCDIR)/attach.c \
  $(SRCDIR)/backlink.c \
  $(SRCDIR)/backoffice.c \
  $(SRCDIR)/bag.c \
  $(SRCDIR)/bisect.c \
  $(SRCDIR)/blob.c \
  $(SRCDIR)/branch.c \
  $(SRCDIR)/browse.c \
  $(SRCDIR)/builtin.c \
  $(SRCDIR)/bundle.c \
  $(SRCDIR)/cache.c \
  $(SRCDIR)/capabilities.c \
  $(SRCDIR)/captcha.c \
  $(SRCDIR)/cgi.c \
  $(SRCDIR)/chat.c \
  $(SRCDIR)/checkin.c \
  $(SRCDIR)/checkout.c \
  $(SRCDIR)/clearsign.c \
  $(SRCDIR)/clone.c \
  $(SRCDIR)/color.c \
  $(SRCDIR)/comformat.c \
  $(SRCDIR)/configure.c \
  $(SRCDIR)/content.c \
  $(SRCDIR)/cookies.c \
  $(SRCDIR)/db.c \
  $(SRCDIR)/delta.c \
  $(SRCDIR)/deltacmd.c \
  $(SRCDIR)/deltafunc.c \
  $(SRCDIR)/descendants.c \
  $(SRCDIR)/diff.c \
  $(SRCDIR)/diffcmd.c \
  $(SRCDIR)/dispatch.c \
  $(SRCDIR)/doc.c \
  $(SRCDIR)/encode.c \
  $(SRCDIR)/etag.c \
  $(SRCDIR)/event.c \
  $(SRCDIR)/export.c \
  $(SRCDIR)/extcgi.c \
  $(SRCDIR)/file.c \
  $(SRCDIR)/fileedit.c \
  $(SRCDIR)/finfo.c \
  $(SRCDIR)/foci.c \
  $(SRCDIR)/forum.c \
  $(SRCDIR)/fshell.c \
  $(SRCDIR)/fusefs.c \
  $(SRCDIR)/fuzz.c \
  $(SRCDIR)/glob.c \
  $(SRCDIR)/graph.c \
  $(SRCDIR)/gzip.c \
  $(SRCDIR)/hname.c \
  $(SRCDIR)/hook.c \
  $(SRCDIR)/http.c \
  $(SRCDIR)/http_socket.c \
  $(SRCDIR)/http_ssl.c \
  $(SRCDIR)/http_transport.c \
  $(SRCDIR)/import.c \
  $(SRCDIR)/info.c \
  $(SRCDIR)/interwiki.c \
  $(SRCDIR)/json.c \
  $(SRCDIR)/json_artifact.c \
  $(SRCDIR)/json_branch.c \
  $(SRCDIR)/json_config.c \
  $(SRCDIR)/json_diff.c \
  $(SRCDIR)/json_dir.c \
  $(SRCDIR)/json_finfo.c \
  $(SRCDIR)/json_login.c \
  $(SRCDIR)/json_query.c \
  $(SRCDIR)/json_report.c \
  $(SRCDIR)/json_status.c \
  $(SRCDIR)/json_tag.c \
  $(SRCDIR)/json_timeline.c \
  $(SRCDIR)/json_user.c \
  $(SRCDIR)/json_wiki.c \
  $(SRCDIR)/leaf.c \
  $(SRCDIR)/loadctrl.c \
  $(SRCDIR)/login.c \
  $(SRCDIR)/lookslike.c \
  $(SRCDIR)/main.c \
  $(SRCDIR)/manifest.c \
  $(SRCDIR)/markdown.c \
  $(SRCDIR)/markdown_html.c \
  $(SRCDIR)/md5.c \
  $(SRCDIR)/merge.c \
  $(SRCDIR)/merge3.c \
  $(SRCDIR)/moderate.c \
  $(SRCDIR)/name.c \
  $(SRCDIR)/patch.c \
  $(SRCDIR)/path.c \
  $(SRCDIR)/piechart.c \
  $(SRCDIR)/pikchrshow.c \
  $(SRCDIR)/pivot.c \
  $(SRCDIR)/popen.c \
  $(SRCDIR)/pqueue.c \
  $(SRCDIR)/printf.c \
  $(SRCDIR)/publish.c \
  $(SRCDIR)/purge.c \
  $(SRCDIR)/rebuild.c \
  $(SRCDIR)/regexp.c \
  $(SRCDIR)/repolist.c \
  $(SRCDIR)/report.c \
  $(SRCDIR)/rss.c \
  $(SRCDIR)/schema.c \
  $(SRCDIR)/search.c \
  $(SRCDIR)/security_audit.c \
  $(SRCDIR)/setup.c \
  $(SRCDIR)/setupuser.c \
  $(SRCDIR)/sha1.c \
  $(SRCDIR)/sha1hard.c \
  $(SRCDIR)/sha3.c \
  $(SRCDIR)/shun.c \
  $(SRCDIR)/sitemap.c \
  $(SRCDIR)/skins.c \
  $(SRCDIR)/smtp.c \
  $(SRCDIR)/sqlcmd.c \
  $(SRCDIR)/stash.c \
  $(SRCDIR)/stat.c \
  $(SRCDIR)/statrep.c \
  $(SRCDIR)/style.c \
  $(SRCDIR)/sync.c \
  $(SRCDIR)/tag.c \
  $(SRCDIR)/tar.c \
  $(SRCDIR)/terminal.c \
  $(SRCDIR)/th_main.c \
  $(SRCDIR)/timeline.c \
  $(SRCDIR)/tkt.c \
  $(SRCDIR)/tktsetup.c \
  $(SRCDIR)/undo.c \
  $(SRCDIR)/unicode.c \
  $(SRCDIR)/unversioned.c \
  $(SRCDIR)/update.c \
  $(SRCDIR)/url.c \
  $(SRCDIR)/user.c \
  $(SRCDIR)/utf8.c \
  $(SRCDIR)/util.c \
  $(SRCDIR)/verify.c \
  $(SRCDIR)/vfile.c \
  $(SRCDIR)/wiki.c \
  $(SRCDIR)/wikiformat.c \
  $(SRCDIR)/winfile.c \
  $(SRCDIR)/winhttp.c \
  $(SRCDIR)/xfer.c \
  $(SRCDIR)/xfersetup.c \
  $(SRCDIR)/zip.c

EXTRA_FILES = \
  $(SRCDIR)/../extsrc/pikchr-worker.js \
  $(SRCDIR)/../extsrc/pikchr.js \
  $(SRCDIR)/../extsrc/pikchr.wasm \
  $(SRCDIR)/../skins/ardoise/css.txt \
  $(SRCDIR)/../skins/ardoise/details.txt \
  $(SRCDIR)/../skins/ardoise/footer.txt \
  $(SRCDIR)/../skins/ardoise/header.txt \
  $(SRCDIR)/../skins/black_and_white/css.txt \
  $(SRCDIR)/../skins/black_and_white/details.txt \
  $(SRCDIR)/../skins/black_and_white/footer.txt \
  $(SRCDIR)/../skins/black_and_white/header.txt \
  $(SRCDIR)/../skins/blitz/css.txt \
  $(SRCDIR)/../skins/blitz/details.txt \
  $(SRCDIR)/../skins/blitz/footer.txt \
  $(SRCDIR)/../skins/blitz/header.txt \
  $(SRCDIR)/../skins/blitz/ticket.txt \
  $(SRCDIR)/../skins/darkmode/css.txt \
  $(SRCDIR)/../skins/darkmode/details.txt \
  $(SRCDIR)/../skins/darkmode/footer.txt \
  $(SRCDIR)/../skins/darkmode/header.txt \
  $(SRCDIR)/../skins/default/css.txt \
  $(SRCDIR)/../skins/default/details.txt \
  $(SRCDIR)/../skins/default/footer.txt \
  $(SRCDIR)/../skins/default/header.txt \
  $(SRCDIR)/../skins/eagle/css.txt \
  $(SRCDIR)/../skins/eagle/details.txt \
  $(SRCDIR)/../skins/eagle/footer.txt \
  $(SRCDIR)/../skins/eagle/header.txt \
  $(SRCDIR)/../skins/khaki/css.txt \
  $(SRCDIR)/../skins/khaki/details.txt \
  $(SRCDIR)/../skins/khaki/footer.txt \
  $(SRCDIR)/../skins/khaki/header.txt \
  $(SRCDIR)/../skins/original/css.txt \
  $(SRCDIR)/../skins/original/details.txt \
  $(SRCDIR)/../skins/original/footer.txt \
  $(SRCDIR)/../skins/original/header.txt \
  $(SRCDIR)/../skins/plain_gray/css.txt \
  $(SRCDIR)/../skins/plain_gray/details.txt \
  $(SRCDIR)/../skins/plain_gray/footer.txt \
  $(SRCDIR)/../skins/plain_gray/header.txt \
  $(SRCDIR)/../skins/xekri/css.txt \
  $(SRCDIR)/../skins/xekri/details.txt \
  $(SRCDIR)/../skins/xekri/footer.txt \
  $(SRCDIR)/../skins/xekri/header.txt \
  $(SRCDIR)/accordion.js \
  $(SRCDIR)/alerts/bflat2.wav \
  $(SRCDIR)/alerts/bflat3.wav \
  $(SRCDIR)/alerts/bloop.wav \
  $(SRCDIR)/alerts/plunk.wav \
  $(SRCDIR)/ci_edit.js \
  $(SRCDIR)/copybtn.js \
  $(SRCDIR)/default.css \
  $(SRCDIR)/diff.js \
  $(SRCDIR)/diff.tcl \
  $(SRCDIR)/forum.js \
  $(SRCDIR)/fossil.bootstrap.js \
  $(SRCDIR)/fossil.confirmer.js \
  $(SRCDIR)/fossil.copybutton.js \
  $(SRCDIR)/fossil.diff.js \
  $(SRCDIR)/fossil.dom.js \
  $(SRCDIR)/fossil.fetch.js \
  $(SRCDIR)/fossil.numbered-lines.js \
  $(SRCDIR)/fossil.page.brlist.js \
  $(SRCDIR)/fossil.page.chat.js \
  $(SRCDIR)/fossil.page.fileedit.js \
  $(SRCDIR)/fossil.page.forumpost.js \
  $(SRCDIR)/fossil.page.pikchrshow.js \
  $(SRCDIR)/fossil.page.pikchrshowasm.js \
  $(SRCDIR)/fossil.page.whistory.js \
  $(SRCDIR)/fossil.page.wikiedit.js \
  $(SRCDIR)/fossil.pikchr.js \
  $(SRCDIR)/fossil.popupwidget.js \
  $(SRCDIR)/fossil.storage.js \
  $(SRCDIR)/fossil.tabs.js \
  $(SRCDIR)/fossil.wikiedit-wysiwyg.js \
  $(SRCDIR)/graph.js \
  $(SRCDIR)/hbmenu.js \
  $(SRCDIR)/href.js \
  $(SRCDIR)/login.js \
  $(SRCDIR)/markdown.md \
  $(SRCDIR)/menu.js \
  $(SRCDIR)/scroll.js \
  $(SRCDIR)/skin.js \
  $(SRCDIR)/sorttable.js \
  $(SRCDIR)/sounds/0.wav \
  $(SRCDIR)/sounds/1.wav \
  $(SRCDIR)/sounds/2.wav \
  $(SRCDIR)/sounds/3.wav \
  $(SRCDIR)/sounds/4.wav \
  $(SRCDIR)/sounds/5.wav \
  $(SRCDIR)/sounds/6.wav \
  $(SRCDIR)/sounds/7.wav \
  $(SRCDIR)/sounds/8.wav \
  $(SRCDIR)/sounds/9.wav \
  $(SRCDIR)/sounds/a.wav \
  $(SRCDIR)/sounds/b.wav \
  $(SRCDIR)/sounds/c.wav \
  $(SRCDIR)/sounds/d.wav \
  $(SRCDIR)/sounds/e.wav \
  $(SRCDIR)/sounds/f.wav \
  $(SRCDIR)/style.admin_log.css \
  $(SRCDIR)/style.chat.css \
  $(SRCDIR)/style.fileedit.css \
  $(SRCDIR)/style.pikchrshow.css \
  $(SRCDIR)/style.wikiedit.css \
  $(SRCDIR)/tree.js \
  $(SRCDIR)/useredit.js \
  $(SRCDIR)/wiki.wiki

TRANS_SRC = \
  $(OBJDIR)/add_.c \
  $(OBJDIR)/ajax_.c \
  $(OBJDIR)/alerts_.c \
  $(OBJDIR)/allrepo_.c \
  $(OBJDIR)/attach_.c \
  $(OBJDIR)/backlink_.c \
  $(OBJDIR)/backoffice_.c \
  $(OBJDIR)/bag_.c \
  $(OBJDIR)/bisect_.c \
  $(OBJDIR)/blob_.c \
  $(OBJDIR)/branch_.c \
  $(OBJDIR)/browse_.c \
  $(OBJDIR)/builtin_.c \
  $(OBJDIR)/bundle_.c \
  $(OBJDIR)/cache_.c \
  $(OBJDIR)/capabilities_.c \
  $(OBJDIR)/captcha_.c \
  $(OBJDIR)/cgi_.c \
  $(OBJDIR)/chat_.c \
  $(OBJDIR)/checkin_.c \
  $(OBJDIR)/checkout_.c \
  $(OBJDIR)/clearsign_.c \
  $(OBJDIR)/clone_.c \
  $(OBJDIR)/color_.c \
  $(OBJDIR)/comformat_.c \
  $(OBJDIR)/configure_.c \
  $(OBJDIR)/content_.c \
  $(OBJDIR)/cookies_.c \
  $(OBJDIR)/db_.c \
  $(OBJDIR)/delta_.c \
  $(OBJDIR)/deltacmd_.c \
  $(OBJDIR)/deltafunc_.c \
  $(OBJDIR)/descendants_.c \
  $(OBJDIR)/diff_.c \
  $(OBJDIR)/diffcmd_.c \
  $(OBJDIR)/dispatch_.c \
  $(OBJDIR)/doc_.c \
  $(OBJDIR)/encode_.c \
  $(OBJDIR)/etag_.c \
  $(OBJDIR)/event_.c \
  $(OBJDIR)/export_.c \
  $(OBJDIR)/extcgi_.c \
  $(OBJDIR)/file_.c \
  $(OBJDIR)/fileedit_.c \
  $(OBJDIR)/finfo_.c \
  $(OBJDIR)/foci_.c \
  $(OBJDIR)/forum_.c \
  $(OBJDIR)/fshell_.c \
  $(OBJDIR)/fusefs_.c \
  $(OBJDIR)/fuzz_.c \
  $(OBJDIR)/glob_.c \
  $(OBJDIR)/graph_.c \
  $(OBJDIR)/gzip_.c \
  $(OBJDIR)/hname_.c \
  $(OBJDIR)/hook_.c \
  $(OBJDIR)/http_.c \
  $(OBJDIR)/http_socket_.c \
  $(OBJDIR)/http_ssl_.c \
  $(OBJDIR)/http_transport_.c \
  $(OBJDIR)/import_.c \
  $(OBJDIR)/info_.c \
  $(OBJDIR)/interwiki_.c \
  $(OBJDIR)/json_.c \
  $(OBJDIR)/json_artifact_.c \
  $(OBJDIR)/json_branch_.c \
  $(OBJDIR)/json_config_.c \
  $(OBJDIR)/json_diff_.c \
  $(OBJDIR)/json_dir_.c \
  $(OBJDIR)/json_finfo_.c \
  $(OBJDIR)/json_login_.c \
  $(OBJDIR)/json_query_.c \
  $(OBJDIR)/json_report_.c \
  $(OBJDIR)/json_status_.c \
  $(OBJDIR)/json_tag_.c \
  $(OBJDIR)/json_timeline_.c \
  $(OBJDIR)/json_user_.c \
  $(OBJDIR)/json_wiki_.c \
  $(OBJDIR)/leaf_.c \
  $(OBJDIR)/loadctrl_.c \
  $(OBJDIR)/login_.c \
  $(OBJDIR)/lookslike_.c \
  $(OBJDIR)/main_.c \
  $(OBJDIR)/manifest_.c \
  $(OBJDIR)/markdown_.c \
  $(OBJDIR)/markdown_html_.c \
  $(OBJDIR)/md5_.c \
  $(OBJDIR)/merge_.c \
  $(OBJDIR)/merge3_.c \
  $(OBJDIR)/moderate_.c \
  $(OBJDIR)/name_.c \
  $(OBJDIR)/patch_.c \
  $(OBJDIR)/path_.c \
  $(OBJDIR)/piechart_.c \
  $(OBJDIR)/pikchrshow_.c \
  $(OBJDIR)/pivot_.c \
  $(OBJDIR)/popen_.c \
  $(OBJDIR)/pqueue_.c \
  $(OBJDIR)/printf_.c \
  $(OBJDIR)/publish_.c \
  $(OBJDIR)/purge_.c \
  $(OBJDIR)/rebuild_.c \
  $(OBJDIR)/regexp_.c \
  $(OBJDIR)/repolist_.c \
  $(OBJDIR)/report_.c \
  $(OBJDIR)/rss_.c \
  $(OBJDIR)/schema_.c \
  $(OBJDIR)/search_.c \
  $(OBJDIR)/security_audit_.c \
  $(OBJDIR)/setup_.c \
  $(OBJDIR)/setupuser_.c \
  $(OBJDIR)/sha1_.c \
  $(OBJDIR)/sha1hard_.c \
  $(OBJDIR)/sha3_.c \
  $(OBJDIR)/shun_.c \
  $(OBJDIR)/sitemap_.c \
  $(OBJDIR)/skins_.c \
  $(OBJDIR)/smtp_.c \
  $(OBJDIR)/sqlcmd_.c \
  $(OBJDIR)/stash_.c \
  $(OBJDIR)/stat_.c \
  $(OBJDIR)/statrep_.c \
  $(OBJDIR)/style_.c \
  $(OBJDIR)/sync_.c \
  $(OBJDIR)/tag_.c \
  $(OBJDIR)/tar_.c \
  $(OBJDIR)/terminal_.c \
  $(OBJDIR)/th_main_.c \
  $(OBJDIR)/timeline_.c \
  $(OBJDIR)/tkt_.c \
  $(OBJDIR)/tktsetup_.c \
  $(OBJDIR)/undo_.c \
  $(OBJDIR)/unicode_.c \
  $(OBJDIR)/unversioned_.c \
  $(OBJDIR)/update_.c \
  $(OBJDIR)/url_.c \
  $(OBJDIR)/user_.c \
  $(OBJDIR)/utf8_.c \
  $(OBJDIR)/util_.c \
  $(OBJDIR)/verify_.c \
  $(OBJDIR)/vfile_.c \
  $(OBJDIR)/wiki_.c \
  $(OBJDIR)/wikiformat_.c \
  $(OBJDIR)/winfile_.c \
  $(OBJDIR)/winhttp_.c \
  $(OBJDIR)/xfer_.c \
  $(OBJDIR)/xfersetup_.c \
  $(OBJDIR)/zip_.c

OBJ = \
 $(OBJDIR)/add.o \
 $(OBJDIR)/ajax.o \
 $(OBJDIR)/alerts.o \
 $(OBJDIR)/allrepo.o \
 $(OBJDIR)/attach.o \
 $(OBJDIR)/backlink.o \
 $(OBJDIR)/backoffice.o \
 $(OBJDIR)/bag.o \
 $(OBJDIR)/bisect.o \
 $(OBJDIR)/blob.o \
 $(OBJDIR)/branch.o \
 $(OBJDIR)/browse.o \
 $(OBJDIR)/builtin.o \
 $(OBJDIR)/bundle.o \
 $(OBJDIR)/cache.o \
 $(OBJDIR)/capabilities.o \
 $(OBJDIR)/captcha.o \
 $(OBJDIR)/cgi.o \
 $(OBJDIR)/chat.o \
 $(OBJDIR)/checkin.o \
 $(OBJDIR)/checkout.o \
 $(OBJDIR)/clearsign.o \
 $(OBJDIR)/clone.o \
 $(OBJDIR)/color.o \
 $(OBJDIR)/comformat.o \
 $(OBJDIR)/configure.o \
 $(OBJDIR)/content.o \
 $(OBJDIR)/cookies.o \
 $(OBJDIR)/db.o \
 $(OBJDIR)/delta.o \
 $(OBJDIR)/deltacmd.o \
 $(OBJDIR)/deltafunc.o \
 $(OBJDIR)/descendants.o \
 $(OBJDIR)/diff.o \
 $(OBJDIR)/diffcmd.o \
 $(OBJDIR)/dispatch.o \
 $(OBJDIR)/doc.o \
 $(OBJDIR)/encode.o \
 $(OBJDIR)/etag.o \
 $(OBJDIR)/event.o \
 $(OBJDIR)/export.o \
 $(OBJDIR)/extcgi.o \
 $(OBJDIR)/file.o \
 $(OBJDIR)/fileedit.o \
 $(OBJDIR)/finfo.o \
 $(OBJDIR)/foci.o \
 $(OBJDIR)/forum.o \
 $(OBJDIR)/fshell.o \
 $(OBJDIR)/fusefs.o \
 $(OBJDIR)/fuzz.o \
 $(OBJDIR)/glob.o \
 $(OBJDIR)/graph.o \
 $(OBJDIR)/gzip.o \
 $(OBJDIR)/hname.o \
 $(OBJDIR)/hook.o \
 $(OBJDIR)/http.o \
 $(OBJDIR)/http_socket.o \
 $(OBJDIR)/http_ssl.o \
 $(OBJDIR)/http_transport.o \
 $(OBJDIR)/import.o \
 $(OBJDIR)/info.o \
 $(OBJDIR)/interwiki.o \
 $(OBJDIR)/json.o \
 $(OBJDIR)/json_artifact.o \
 $(OBJDIR)/json_branch.o \
 $(OBJDIR)/json_config.o \
 $(OBJDIR)/json_diff.o \
 $(OBJDIR)/json_dir.o \
 $(OBJDIR)/json_finfo.o \
 $(OBJDIR)/json_login.o \
 $(OBJDIR)/json_query.o \
 $(OBJDIR)/json_report.o \
 $(OBJDIR)/json_status.o \
 $(OBJDIR)/json_tag.o \
 $(OBJDIR)/json_timeline.o \
 $(OBJDIR)/json_user.o \
 $(OBJDIR)/json_wiki.o \
 $(OBJDIR)/leaf.o \
 $(OBJDIR)/loadctrl.o \
 $(OBJDIR)/login.o \
 $(OBJDIR)/lookslike.o \
 $(OBJDIR)/main.o \
 $(OBJDIR)/manifest.o \
 $(OBJDIR)/markdown.o \
 $(OBJDIR)/markdown_html.o \
 $(OBJDIR)/md5.o \
 $(OBJDIR)/merge.o \
 $(OBJDIR)/merge3.o \
 $(OBJDIR)/moderate.o \
 $(OBJDIR)/name.o \
 $(OBJDIR)/patch.o \
 $(OBJDIR)/path.o \
 $(OBJDIR)/piechart.o \
 $(OBJDIR)/pikchrshow.o \
 $(OBJDIR)/pivot.o \
 $(OBJDIR)/popen.o \
 $(OBJDIR)/pqueue.o \
 $(OBJDIR)/printf.o \
 $(OBJDIR)/publish.o \
 $(OBJDIR)/purge.o \
 $(OBJDIR)/rebuild.o \
 $(OBJDIR)/regexp.o \
 $(OBJDIR)/repolist.o \
 $(OBJDIR)/report.o \
 $(OBJDIR)/rss.o \
 $(OBJDIR)/schema.o \
 $(OBJDIR)/search.o \
 $(OBJDIR)/security_audit.o \
 $(OBJDIR)/setup.o \
 $(OBJDIR)/setupuser.o \
 $(OBJDIR)/sha1.o \
 $(OBJDIR)/sha1hard.o \
 $(OBJDIR)/sha3.o \
 $(OBJDIR)/shun.o \
 $(OBJDIR)/sitemap.o \
 $(OBJDIR)/skins.o \
 $(OBJDIR)/smtp.o \
 $(OBJDIR)/sqlcmd.o \
 $(OBJDIR)/stash.o \
 $(OBJDIR)/stat.o \
 $(OBJDIR)/statrep.o \
 $(OBJDIR)/style.o \
 $(OBJDIR)/sync.o \
 $(OBJDIR)/tag.o \
 $(OBJDIR)/tar.o \
 $(OBJDIR)/terminal.o \
 $(OBJDIR)/th_main.o \
 $(OBJDIR)/timeline.o \
 $(OBJDIR)/tkt.o \
 $(OBJDIR)/tktsetup.o \
 $(OBJDIR)/undo.o \
 $(OBJDIR)/unicode.o \
 $(OBJDIR)/unversioned.o \
 $(OBJDIR)/update.o \
 $(OBJDIR)/url.o \
 $(OBJDIR)/user.o \
 $(OBJDIR)/utf8.o \
 $(OBJDIR)/util.o \
 $(OBJDIR)/verify.o \
 $(OBJDIR)/vfile.o \
 $(OBJDIR)/wiki.o \
 $(OBJDIR)/wikiformat.o \
 $(OBJDIR)/winfile.o \
 $(OBJDIR)/winhttp.o \
 $(OBJDIR)/xfer.o \
 $(OBJDIR)/xfersetup.o \
 $(OBJDIR)/zip.o

APPNAME    = fossil.exe
APPTARGETS =

#### If the USE_WINDOWS variable exists, it is assumed that we are building
#    inside of a Windows-style shell; otherwise, it is assumed that we are
#    building inside of a Unix-style shell.  Note that the "move" command is
#    broken when attempting to use it from the Windows shell via MinGW make
#    because the SHELL variable is only used for certain commands that are
#    recognized internally by make.
#
ifdef USE_WINDOWS
TRANSLATE   = $(subst /,\,$(OBJDIR)/translate.exe)
MAKEHEADERS = $(subst /,\,$(OBJDIR)/makeheaders.exe)
MKINDEX     = $(subst /,\,$(OBJDIR)/mkindex.exe)
MKBUILTIN   = $(subst /,\,$(OBJDIR)/mkbuiltin.exe)
MKVERSION   = $(subst /,\,$(OBJDIR)/mkversion.exe)
CODECHECK1  = $(subst /,\,$(OBJDIR)/codecheck1.exe)
CAT         = type
CP          = copy
GREP        = find
MV          = copy
RM          = del /Q
MKDIR       = -mkdir
RMDIR       = rmdir /S /Q
else
TRANSLATE   = $(OBJDIR)/translate.exe
MAKEHEADERS = $(OBJDIR)/makeheaders.exe
MKINDEX     = $(OBJDIR)/mkindex.exe
MKBUILTIN   = $(OBJDIR)/mkbuiltin.exe
MKVERSION   = $(OBJDIR)/mkversion.exe
CODECHECK1  = $(OBJDIR)/codecheck1.exe
CAT         = cat
CP          = cp
GREP        = grep
MV          = mv
RM          = rm -f
MKDIR       = -mkdir -p
RMDIR       = rm -rf
endif

all:	$(OBJDIR) $(APPNAME)

$(OBJDIR)/fossil.o:	$(SRCDIR)/../win/fossil.rc $(OBJDIR)/VERSION.h
ifdef USE_WINDOWS
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.rc) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.ico) $(subst /,\,$(OBJDIR))
	$(CP) $(subst /,\,$(SRCDIR)\..\win\fossil.exe.manifest) $(subst /,\,$(OBJDIR))
else
	$(CP) $(SRCDIR)/../win/fossil.rc $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.ico $(OBJDIR)
	$(CP) $(SRCDIR)/../win/fossil.exe.manifest $(OBJDIR)
endif
	$(RCC) $(OBJDIR)/fossil.rc -o $(OBJDIR)/fossil.o

install:	$(OBJDIR) $(APPNAME)
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(INSTALLDIR))
	$(CP) $(subst /,\,$(APPNAME)) $(subst /,\,$(INSTALLDIR))
else
	$(MKDIR) $(INSTALLDIR)
	$(CP) $(APPNAME) $(INSTALLDIR)
endif

$(OBJDIR):
ifdef USE_WINDOWS
	$(MKDIR) $(subst /,\,$(OBJDIR))
else
	$(MKDIR) $(OBJDIR)
endif

$(TRANSLATE):	$(SRCDIR_tools)/translate.c
	$(XBCC) -o $@ $(SRCDIR_tools)/translate.c

$(MAKEHEADERS):	$(SRCDIR_tools)/makeheaders.c
	$(XBCC) -o $@ $(SRCDIR_tools)/makeheaders.c

$(MKINDEX):	$(SRCDIR_tools)/mkindex.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkindex.c

$(MKBUILTIN):	$(SRCDIR_tools)/mkbuiltin.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkbuiltin.c

$(MKVERSION): $(SRCDIR_tools)/mkversion.c
	$(XBCC) -o $@ $(SRCDIR_tools)/mkversion.c

$(CODECHECK1):	$(SRCDIR_tools)/codecheck1.c
	$(XBCC) -o $@ $(SRCDIR_tools)/codecheck1.c

# WARNING. DANGER. Running the test suite modifies the repository the
# build is done from, i.e. the checkout belongs to. Do not sync/push
# the repository after running the tests.
test:	$(OBJDIR) $(APPNAME)
	$(TCLSH) $(SRCDIR)/../test/tester.tcl $(APPNAME)

$(OBJDIR)/VERSION.h:	$(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(MKVERSION) $(OBJDIR)/phony.h
	$(MKVERSION) $(SRCDIR)/../manifest.uuid $(SRCDIR)/../manifest $(SRCDIR)/../VERSION >$@

$(OBJDIR)/phony.h:
	# Force rebuild of VERSION.h every time "make" is run

# The USE_SYSTEM_SQLITE variable may be undefined, set to 0 or 1.
# If it is set to 1, then there is no need to build or link
# the sqlite3.o object. Instead, the system SQLite will be linked
# using -lsqlite3.
#
# Closely related is SQLITE3_ORIGIN, with the same 0/1 mapping,
# plus a value of 2 means that we are building a client-provided
# sqlite3.c.
SQLITE3_OBJ.0 = $(OBJDIR)/sqlite3.o
SQLITE3_OBJ.1 = $(OBJDIR)/sqlite3-see.o
# SQLITE3_OBJ.2 is set by the configure process
SQLITE3_OBJ.  = $(SQLITE3_OBJ.0)
SQLITE3_OBJ   = $(SQLITE3_OBJ.$(SQLITE3_ORIGIN))

# The USE_SEE variable may be undefined, 0 or 1.  If undefined or 0,
# in-tree SQLite is used.  If 1, then sqlite3-see.c (not part of the
# source tree) is used and extra flags are provided to enable the
# SQLite Encryption Extension.
SQLITE3_SRC.0 = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC.1 = $(SRCDIR_extsrc)/sqlite3-see.c
# SQLITE3_SRC.2 is set by top-level configure/makefile process.
SQLITE3_SRC. = $(SRCDIR_extsrc)/sqlite3.c
SQLITE3_SRC = $(SQLITE3_SRC.$(SQLITE3_ORIGIN))
SQLITE3_SHELL_SRC.0 = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC.1 = $(SRCDIR_extsrc)/shell-see.c
# SQLITE3_SHELL_SRC.2 comes from the configure process
SQLITE3_SHELL_SRC. = $(SRCDIR_extsrc)/shell.c
SQLITE3_SHELL_SRC = $(SQLITE3_SHELL_SRC.$(SQLITE3_ORIGIN))
SEE_FLAGS.0 =
SEE_FLAGS.1 = -DSQLITE_HAS_CODEC -DSQLITE_SHELL_DBKEY_PROC=fossil_key
SEE_FLAGS. =
SEE_FLAGS = $(SEE_FLAGS.$(USE_SEE))


EXTRAOBJ = \
 $(SQLITE3_OBJ.$(SQLITE3_ORIGIN)) \
 $(OBJDIR)/pikchr.o \
 $(OBJDIR)/shell.o \
 $(OBJDIR)/th.o \
 $(OBJDIR)/th_lang.o \
 $(OBJDIR)/th_tcl.o \
 $(OBJDIR)/cson_amalgamation.o


zlib:	$(ZLIBTARGETS)
	$(MAKE) -C $(ZLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) $(ZLIBCONFIG) -f win32/Makefile.gcc libz.a

clean-zlib:
	$(MAKE) -C $(ZLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) -f win32/Makefile.gcc clean

BLDTARGETS = zlib

openssl:	$(BLDTARGETS)
	cd $(OPENSSLLIBDIR);./Configure --cross-compile-prefix=$(PREFIX) $(SSLCONFIG)
	sed -i -e 's/^PERL=C:\\.*$$/PERL=perl.exe/i' $(OPENSSLLIBDIR)/Makefile
	$(MAKE) -C $(OPENSSLLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) build_libs

clean-openssl:
	$(MAKE) -C $(OPENSSLLIBDIR) PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) clean

tcl:
	cd $(TCLSRCDIR)/win;./configure
	$(MAKE) -C $(TCLSRCDIR)/win PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) $(TCLTARGET)

clean-tcl:
	$(MAKE) -C $(TCLSRCDIR)/win PREFIX=$(PREFIX) CC=$(PREFIX)$(TCCEXE) distclean

APPTARGETS += $(BLDTARGETS)

ifdef FOSSIL_BUILD_SSL
APPTARGETS += openssl
endif

$(APPNAME):	$(APPTARGETS) $(OBJDIR)/headers $(CODECHECK1) $(EXTRAOBJ) $(OBJ) $(OBJDIR)/fossil.o
	$(CODECHECK1) $(TRANS_SRC)
	$(TCC) -o $@ $(EXTRAOBJ) $(OBJ) $(OBJDIR)/fossil.o $(LIB)

# This rule prevents make from using its default rules to try build
# an executable named "manifest" out of the file named "manifest.c"
#
$(SRCDIR)/../manifest:
	# noop

clean:
ifdef USE_WINDOWS
	$(RM) $(subst /,\,$(APPNAME))
	$(RMDIR) $(subst /,\,$(OBJDIR))
else
	$(RM) $(APPNAME)
	$(RMDIR) $(OBJDIR)
endif

setup: $(OBJDIR) $(APPNAME)
	$(MAKENSIS) ./setup/fossil.nsi

innosetup: $(OBJDIR) $(APPNAME)
	$(INNOSETUP) ./setup/fossil.iss -DAppVersion=$(shell $(CAT) ./VERSION)

$(OBJDIR)/page_index.h: $(TRANS_SRC) $(MKINDEX)
	$(MKINDEX) $(TRANS_SRC) >$@

$(OBJDIR)/builtin_data.h:	$(MKBUILTIN) $(EXTRA_FILES)
	$(MKBUILTIN) --prefix $(SRCDIR)/ $(EXTRA_FILES) >$@

$(OBJDIR)/headers:	$(OBJDIR)/page_index.h $(OBJDIR)/builtin_data.h $(MAKEHEADERS) $(OBJDIR)/VERSION.h
	$(MAKEHEADERS) $(OBJDIR)/add_.c:$(OBJDIR)/add.h \
	$(OBJDIR)/ajax_.c:$(OBJDIR)/ajax.h \
	$(OBJDIR)/alerts_.c:$(OBJDIR)/alerts.h \
	$(OBJDIR)/allrepo_.c:$(OBJDIR)/allrepo.h \
	$(OBJDIR)/attach_.c:$(OBJDIR)/attach.h \
	$(OBJDIR)/backlink_.c:$(OBJDIR)/backlink.h \
	$(OBJDIR)/backoffice_.c:$(OBJDIR)/backoffice.h \
	$(OBJDIR)/bag_.c:$(OBJDIR)/bag.h \
	$(OBJDIR)/bisect_.c:$(OBJDIR)/bisect.h \
	$(OBJDIR)/blob_.c:$(OBJDIR)/blob.h \
	$(OBJDIR)/branch_.c:$(OBJDIR)/branch.h \
	$(OBJDIR)/browse_.c:$(OBJDIR)/browse.h \
	$(OBJDIR)/builtin_.c:$(OBJDIR)/builtin.h \
	$(OBJDIR)/bundle_.c:$(OBJDIR)/bundle.h \
	$(OBJDIR)/cache_.c:$(OBJDIR)/cache.h \
	$(OBJDIR)/capabilities_.c:$(OBJDIR)/capabilities.h \
	$(OBJDIR)/captcha_.c:$(OBJDIR)/captcha.h \
	$(OBJDIR)/cgi_.c:$(OBJDIR)/cgi.h \
	$(OBJDIR)/chat_.c:$(OBJDIR)/chat.h \
	$(OBJDIR)/checkin_.c:$(OBJDIR)/checkin.h \
	$(OBJDIR)/checkout_.c:$(OBJDIR)/checkout.h \
	$(OBJDIR)/clearsign_.c:$(OBJDIR)/clearsign.h \
	$(OBJDIR)/clone_.c:$(OBJDIR)/clone.h \
	$(OBJDIR)/color_.c:$(OBJDIR)/color.h \
	$(OBJDIR)/comformat_.c:$(OBJDIR)/comformat.h \
	$(OBJDIR)/configure_.c:$(OBJDIR)/configure.h \
	$(OBJDIR)/content_.c:$(OBJDIR)/content.h \
	$(OBJDIR)/cookies_.c:$(OBJDIR)/cookies.h \
	$(OBJDIR)/db_.c:$(OBJDIR)/db.h \
	$(OBJDIR)/delta_.c:$(OBJDIR)/delta.h \
	$(OBJDIR)/deltacmd_.c:$(OBJDIR)/deltacmd.h \
	$(OBJDIR)/deltafunc_.c:$(OBJDIR)/deltafunc.h \
	$(OBJDIR)/descendants_.c:$(OBJDIR)/descendants.h \
	$(OBJDIR)/diff_.c:$(OBJDIR)/diff.h \
	$(OBJDIR)/diffcmd_.c:$(OBJDIR)/diffcmd.h \
	$(OBJDIR)/dispatch_.c:$(OBJDIR)/dispatch.h \
	$(OBJDIR)/doc_.c:$(OBJDIR)/doc.h \
	$(OBJDIR)/encode_.c:$(OBJDIR)/encode.h \
	$(OBJDIR)/etag_.c:$(OBJDIR)/etag.h \
	$(OBJDIR)/event_.c:$(OBJDIR)/event.h \
	$(OBJDIR)/export_.c:$(OBJDIR)/export.h \
	$(OBJDIR)/extcgi_.c:$(OBJDIR)/extcgi.h \
	$(OBJDIR)/file_.c:$(OBJDIR)/file.h \
	$(OBJDIR)/fileedit_.c:$(OBJDIR)/fileedit.h \
	$(OBJDIR)/finfo_.c:$(OBJDIR)/finfo.h \
	$(OBJDIR)/foci_.c:$(OBJDIR)/foci.h \
	$(OBJDIR)/forum_.c:$(OBJDIR)/forum.h \
	$(OBJDIR)/fshell_.c:$(OBJDIR)/fshell.h \
	$(OBJDIR)/fusefs_.c:$(OBJDIR)/fusefs.h \
	$(OBJDIR)/fuzz_.c:$(OBJDIR)/fuzz.h \
	$(OBJDIR)/glob_.c:$(OBJDIR)/glob.h \
	$(OBJDIR)/graph_.c:$(OBJDIR)/graph.h \
	$(OBJDIR)/gzip_.c:$(OBJDIR)/gzip.h \
	$(OBJDIR)/hname_.c:$(OBJDIR)/hname.h \
	$(OBJDIR)/hook_.c:$(OBJDIR)/hook.h \
	$(OBJDIR)/http_.c:$(OBJDIR)/http.h \
	$(OBJDIR)/http_socket_.c:$(OBJDIR)/http_socket.h \
	$(OBJDIR)/http_ssl_.c:$(OBJDIR)/http_ssl.h \
	$(OBJDIR)/http_transport_.c:$(OBJDIR)/http_transport.h \
	$(OBJDIR)/import_.c:$(OBJDIR)/import.h \
	$(OBJDIR)/info_.c:$(OBJDIR)/info.h \
	$(OBJDIR)/interwiki_.c:$(OBJDIR)/interwiki.h \
	$(OBJDIR)/json_.c:$(OBJDIR)/json.h \
	$(OBJDIR)/json_artifact_.c:$(OBJDIR)/json_artifact.h \
	$(OBJDIR)/json_branch_.c:$(OBJDIR)/json_branch.h \
	$(OBJDIR)/json_config_.c:$(OBJDIR)/json_config.h \
	$(OBJDIR)/json_diff_.c:$(OBJDIR)/json_diff.h \
	$(OBJDIR)/json_dir_.c:$(OBJDIR)/json_dir.h \
	$(OBJDIR)/json_finfo_.c:$(OBJDIR)/json_finfo.h \
	$(OBJDIR)/json_login_.c:$(OBJDIR)/json_login.h \
	$(OBJDIR)/json_query_.c:$(OBJDIR)/json_query.h \
	$(OBJDIR)/json_report_.c:$(OBJDIR)/json_report.h \
	$(OBJDIR)/json_status_.c:$(OBJDIR)/json_status.h \
	$(OBJDIR)/json_tag_.c:$(OBJDIR)/json_tag.h \
	$(OBJDIR)/json_timeline_.c:$(OBJDIR)/json_timeline.h \
	$(OBJDIR)/json_user_.c:$(OBJDIR)/json_user.h \
	$(OBJDIR)/json_wiki_.c:$(OBJDIR)/json_wiki.h \
	$(OBJDIR)/leaf_.c:$(OBJDIR)/leaf.h \
	$(OBJDIR)/loadctrl_.c:$(OBJDIR)/loadctrl.h \
	$(OBJDIR)/login_.c:$(OBJDIR)/login.h \
	$(OBJDIR)/lookslike_.c:$(OBJDIR)/lookslike.h \
	$(OBJDIR)/main_.c:$(OBJDIR)/main.h \
	$(OBJDIR)/manifest_.c:$(OBJDIR)/manifest.h \
	$(OBJDIR)/markdown_.c:$(OBJDIR)/markdown.h \
	$(OBJDIR)/markdown_html_.c:$(OBJDIR)/markdown_html.h \
	$(OBJDIR)/md5_.c:$(OBJDIR)/md5.h \
	$(OBJDIR)/merge_.c:$(OBJDIR)/merge.h \
	$(OBJDIR)/merge3_.c:$(OBJDIR)/merge3.h \
	$(OBJDIR)/moderate_.c:$(OBJDIR)/moderate.h \
	$(OBJDIR)/name_.c:$(OBJDIR)/name.h \
	$(OBJDIR)/patch_.c:$(OBJDIR)/patch.h \
	$(OBJDIR)/path_.c:$(OBJDIR)/path.h \
	$(OBJDIR)/piechart_.c:$(OBJDIR)/piechart.h \
	$(OBJDIR)/pikchrshow_.c:$(OBJDIR)/pikchrshow.h \
	$(OBJDIR)/pivot_.c:$(OBJDIR)/pivot.h \
	$(OBJDIR)/popen_.c:$(OBJDIR)/popen.h \
	$(OBJDIR)/pqueue_.c:$(OBJDIR)/pqueue.h \
	$(OBJDIR)/printf_.c:$(OBJDIR)/printf.h \
	$(OBJDIR)/publish_.c:$(OBJDIR)/publish.h \
	$(OBJDIR)/purge_.c:$(OBJDIR)/purge.h \
	$(OBJDIR)/rebuild_.c:$(OBJDIR)/rebuild.h \
	$(OBJDIR)/regexp_.c:$(OBJDIR)/regexp.h \
	$(OBJDIR)/repolist_.c:$(OBJDIR)/repolist.h \
	$(OBJDIR)/report_.c:$(OBJDIR)/report.h \
	$(OBJDIR)/rss_.c:$(OBJDIR)/rss.h \
	$(OBJDIR)/schema_.c:$(OBJDIR)/schema.h \
	$(OBJDIR)/search_.c:$(OBJDIR)/search.h \
	$(OBJDIR)/security_audit_.c:$(OBJDIR)/security_audit.h \
	$(OBJDIR)/setup_.c:$(OBJDIR)/setup.h \
	$(OBJDIR)/setupuser_.c:$(OBJDIR)/setupuser.h \
	$(OBJDIR)/sha1_.c:$(OBJDIR)/sha1.h \
	$(OBJDIR)/sha1hard_.c:$(OBJDIR)/sha1hard.h \
	$(OBJDIR)/sha3_.c:$(OBJDIR)/sha3.h \
	$(OBJDIR)/shun_.c:$(OBJDIR)/shun.h \
	$(OBJDIR)/sitemap_.c:$(OBJDIR)/sitemap.h \
	$(OBJDIR)/skins_.c:$(OBJDIR)/skins.h \
	$(OBJDIR)/smtp_.c:$(OBJDIR)/smtp.h \
	$(OBJDIR)/sqlcmd_.c:$(OBJDIR)/sqlcmd.h \
	$(OBJDIR)/stash_.c:$(OBJDIR)/stash.h \
	$(OBJDIR)/stat_.c:$(OBJDIR)/stat.h \
	$(OBJDIR)/statrep_.c:$(OBJDIR)/statrep.h \
	$(OBJDIR)/style_.c:$(OBJDIR)/style.h \
	$(OBJDIR)/sync_.c:$(OBJDIR)/sync.h \
	$(OBJDIR)/tag_.c:$(OBJDIR)/tag.h \
	$(OBJDIR)/tar_.c:$(OBJDIR)/tar.h \
	$(OBJDIR)/terminal_.c:$(OBJDIR)/terminal.h \
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$(OBJDIR)/th_main_.c:	$(SRCDIR)/th_main.c $(TRANSLATE)
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$(OBJDIR)/th_main.o:	$(OBJDIR)/th_main_.c $(OBJDIR)/th_main.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/th_main.o -c $(OBJDIR)/th_main_.c

$(OBJDIR)/th_main.h:	$(OBJDIR)/headers

$(OBJDIR)/timeline_.c:	$(SRCDIR)/timeline.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/timeline.c >$@

$(OBJDIR)/timeline.o:	$(OBJDIR)/timeline_.c $(OBJDIR)/timeline.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/timeline.o -c $(OBJDIR)/timeline_.c

$(OBJDIR)/timeline.h:	$(OBJDIR)/headers

$(OBJDIR)/tkt_.c:	$(SRCDIR)/tkt.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/tkt.c >$@

$(OBJDIR)/tkt.o:	$(OBJDIR)/tkt_.c $(OBJDIR)/tkt.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tkt.o -c $(OBJDIR)/tkt_.c

$(OBJDIR)/tkt.h:	$(OBJDIR)/headers

$(OBJDIR)/tktsetup_.c:	$(SRCDIR)/tktsetup.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/tktsetup.c >$@

$(OBJDIR)/tktsetup.o:	$(OBJDIR)/tktsetup_.c $(OBJDIR)/tktsetup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/tktsetup.o -c $(OBJDIR)/tktsetup_.c

$(OBJDIR)/tktsetup.h:	$(OBJDIR)/headers

$(OBJDIR)/undo_.c:	$(SRCDIR)/undo.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/undo.c >$@

$(OBJDIR)/undo.o:	$(OBJDIR)/undo_.c $(OBJDIR)/undo.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/undo.o -c $(OBJDIR)/undo_.c

$(OBJDIR)/undo.h:	$(OBJDIR)/headers

$(OBJDIR)/unicode_.c:	$(SRCDIR)/unicode.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/unicode.c >$@

$(OBJDIR)/unicode.o:	$(OBJDIR)/unicode_.c $(OBJDIR)/unicode.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/unicode.o -c $(OBJDIR)/unicode_.c

$(OBJDIR)/unicode.h:	$(OBJDIR)/headers

$(OBJDIR)/unversioned_.c:	$(SRCDIR)/unversioned.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/unversioned.c >$@

$(OBJDIR)/unversioned.o:	$(OBJDIR)/unversioned_.c $(OBJDIR)/unversioned.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/unversioned.o -c $(OBJDIR)/unversioned_.c

$(OBJDIR)/unversioned.h:	$(OBJDIR)/headers

$(OBJDIR)/update_.c:	$(SRCDIR)/update.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/update.c >$@

$(OBJDIR)/update.o:	$(OBJDIR)/update_.c $(OBJDIR)/update.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/update.o -c $(OBJDIR)/update_.c

$(OBJDIR)/update.h:	$(OBJDIR)/headers

$(OBJDIR)/url_.c:	$(SRCDIR)/url.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/url.c >$@

$(OBJDIR)/url.o:	$(OBJDIR)/url_.c $(OBJDIR)/url.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/url.o -c $(OBJDIR)/url_.c

$(OBJDIR)/url.h:	$(OBJDIR)/headers

$(OBJDIR)/user_.c:	$(SRCDIR)/user.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/user.c >$@

$(OBJDIR)/user.o:	$(OBJDIR)/user_.c $(OBJDIR)/user.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/user.o -c $(OBJDIR)/user_.c

$(OBJDIR)/user.h:	$(OBJDIR)/headers

$(OBJDIR)/utf8_.c:	$(SRCDIR)/utf8.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/utf8.c >$@

$(OBJDIR)/utf8.o:	$(OBJDIR)/utf8_.c $(OBJDIR)/utf8.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/utf8.o -c $(OBJDIR)/utf8_.c

$(OBJDIR)/utf8.h:	$(OBJDIR)/headers

$(OBJDIR)/util_.c:	$(SRCDIR)/util.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/util.c >$@

$(OBJDIR)/util.o:	$(OBJDIR)/util_.c $(OBJDIR)/util.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/util.o -c $(OBJDIR)/util_.c

$(OBJDIR)/util.h:	$(OBJDIR)/headers

$(OBJDIR)/verify_.c:	$(SRCDIR)/verify.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/verify.c >$@

$(OBJDIR)/verify.o:	$(OBJDIR)/verify_.c $(OBJDIR)/verify.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/verify.o -c $(OBJDIR)/verify_.c

$(OBJDIR)/verify.h:	$(OBJDIR)/headers

$(OBJDIR)/vfile_.c:	$(SRCDIR)/vfile.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/vfile.c >$@

$(OBJDIR)/vfile.o:	$(OBJDIR)/vfile_.c $(OBJDIR)/vfile.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/vfile.o -c $(OBJDIR)/vfile_.c

$(OBJDIR)/vfile.h:	$(OBJDIR)/headers

$(OBJDIR)/wiki_.c:	$(SRCDIR)/wiki.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/wiki.c >$@

$(OBJDIR)/wiki.o:	$(OBJDIR)/wiki_.c $(OBJDIR)/wiki.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wiki.o -c $(OBJDIR)/wiki_.c

$(OBJDIR)/wiki.h:	$(OBJDIR)/headers

$(OBJDIR)/wikiformat_.c:	$(SRCDIR)/wikiformat.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/wikiformat.c >$@

$(OBJDIR)/wikiformat.o:	$(OBJDIR)/wikiformat_.c $(OBJDIR)/wikiformat.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/wikiformat.o -c $(OBJDIR)/wikiformat_.c

$(OBJDIR)/wikiformat.h:	$(OBJDIR)/headers

$(OBJDIR)/winfile_.c:	$(SRCDIR)/winfile.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/winfile.c >$@

$(OBJDIR)/winfile.o:	$(OBJDIR)/winfile_.c $(OBJDIR)/winfile.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winfile.o -c $(OBJDIR)/winfile_.c

$(OBJDIR)/winfile.h:	$(OBJDIR)/headers

$(OBJDIR)/winhttp_.c:	$(SRCDIR)/winhttp.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/winhttp.c >$@

$(OBJDIR)/winhttp.o:	$(OBJDIR)/winhttp_.c $(OBJDIR)/winhttp.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/winhttp.o -c $(OBJDIR)/winhttp_.c

$(OBJDIR)/winhttp.h:	$(OBJDIR)/headers

$(OBJDIR)/xfer_.c:	$(SRCDIR)/xfer.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/xfer.c >$@

$(OBJDIR)/xfer.o:	$(OBJDIR)/xfer_.c $(OBJDIR)/xfer.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfer.o -c $(OBJDIR)/xfer_.c

$(OBJDIR)/xfer.h:	$(OBJDIR)/headers

$(OBJDIR)/xfersetup_.c:	$(SRCDIR)/xfersetup.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/xfersetup.c >$@

$(OBJDIR)/xfersetup.o:	$(OBJDIR)/xfersetup_.c $(OBJDIR)/xfersetup.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/xfersetup.o -c $(OBJDIR)/xfersetup_.c

$(OBJDIR)/xfersetup.h:	$(OBJDIR)/headers

$(OBJDIR)/zip_.c:	$(SRCDIR)/zip.c $(TRANSLATE)
	$(TRANSLATE) $(SRCDIR)/zip.c >$@

$(OBJDIR)/zip.o:	$(OBJDIR)/zip_.c $(OBJDIR)/zip.h $(SRCDIR)/config.h
	$(XTCC) -o $(OBJDIR)/zip.o -c $(OBJDIR)/zip_.c

$(OBJDIR)/zip.h:	$(OBJDIR)/headers

MINGW_OPTIONS = -D_HAVE__MINGW_H

SQLITE_OPTIONS = -DNDEBUG=1 \
                 -DSQLITE_DQS=0 \
                 -DSQLITE_THREADSAFE=0 \
                 -DSQLITE_DEFAULT_MEMSTATUS=0 \
                 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                 -DSQLITE_OMIT_DECLTYPE \
                 -DSQLITE_OMIT_DEPRECATED \
                 -DSQLITE_OMIT_PROGRESS_CALLBACK \
                 -DSQLITE_OMIT_SHARED_CACHE \
                 -DSQLITE_OMIT_LOAD_EXTENSION \
                 -DSQLITE_MAX_EXPR_DEPTH=0 \
                 -DSQLITE_ENABLE_LOCKING_STYLE=0 \
                 -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 -DSQLITE_ENABLE_FTS4 \
                 -DSQLITE_ENABLE_DBSTAT_VTAB \
                 -DSQLITE_ENABLE_FTS5 \
                 -DSQLITE_ENABLE_STMTVTAB \
                 -DSQLITE_HAVE_ZLIB \
                 -DSQLITE_ENABLE_DBPAGE_VTAB \
                 -DSQLITE_TRUSTED_SCHEMA=0 \
                 -DHAVE_USLEEP \
                 -DSQLITE_WIN32_NO_ANSI \
                 $(MINGW_OPTIONS) \
                 -DSQLITE_USE_MALLOC_H \
                 -DSQLITE_USE_MSIZE

SHELL_OPTIONS = -DNDEBUG=1 \
                 -DSQLITE_DQS=0 \
                 -DSQLITE_THREADSAFE=0 \
                 -DSQLITE_DEFAULT_MEMSTATUS=0 \
                 -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                 -DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                 -DSQLITE_OMIT_DECLTYPE \
                 -DSQLITE_OMIT_DEPRECATED \
                 -DSQLITE_OMIT_PROGRESS_CALLBACK \
                 -DSQLITE_OMIT_SHARED_CACHE \
                 -DSQLITE_OMIT_LOAD_EXTENSION \
                 -DSQLITE_MAX_EXPR_DEPTH=0 \
                 -DSQLITE_ENABLE_LOCKING_STYLE=0 \
                 -DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 -DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 -DSQLITE_ENABLE_FTS4 \
                 -DSQLITE_ENABLE_DBSTAT_VTAB \
                 -DSQLITE_ENABLE_FTS5 \
                 -DSQLITE_ENABLE_STMTVTAB \
                 -DSQLITE_HAVE_ZLIB \
                 -DSQLITE_ENABLE_DBPAGE_VTAB \
                 -DSQLITE_TRUSTED_SCHEMA=0 \
                 -DHAVE_USLEEP \
                 -Dmain=sqlite3_shell \
                 -DSQLITE_SHELL_IS_UTF8=1 \
                 -DSQLITE_OMIT_LOAD_EXTENSION=1 \
                 -DUSE_SYSTEM_SQLITE=$(USE_SYSTEM_SQLITE) \
                 -DSQLITE_SHELL_DBNAME_PROC=sqlcmd_get_dbname \
                 -DSQLITE_SHELL_INIT_PROC=sqlcmd_init_proc \
                 -Daccess=file_access \
                 -Dsystem=fossil_system \
                 -Dgetenv=fossil_getenv \
                 -Dfopen=fossil_fopen

PIKCHR_OPTIONS = -DPIKCHR_TOKEN_LIMIT=10000

$(SQLITE3_OBJ):	$(SQLITE3_SRC) $(SRCDIR)/../win/Makefile.mingw.mistachkin
	$(XTCC) $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $(SEE_FLAGS) \
		-c $(SQLITE3_SRC) -o $@

$(OBJDIR)/cson_amalgamation.o:	$(SRCDIR_extsrc)/cson_amalgamation.c
	$(XTCC) -c $(SRCDIR_extsrc)/cson_amalgamation.c -o $@

$(OBJDIR)/json.o $(OBJDIR)/json_artifact.o $(OBJDIR)/json_branch.o $(OBJDIR)/json_config.o $(OBJDIR)/json_diff.o $(OBJDIR)/json_dir.o $(OBJDIR)/jsos_finfo.o $(OBJDIR)/json_login.o $(OBJDIR)/json_query.o $(OBJDIR)/json_report.o $(OBJDIR)/json_status.o $(OBJDIR)/json_tag.o $(OBJDIR)/json_timeline.o $(OBJDIR)/json_user.o $(OBJDIR)/json_wiki.o : $(SRCDIR)/json_detail.h

$(OBJDIR)/shell.o:	$(SQLITE3_SHELL_SRC) $(SRCDIR_extsrc)/sqlite3.h $(SRCDIR)/../win/Makefile.mingw.mistachkin
	$(XTCC) $(SHELL_OPTIONS) $(SHELL_CFLAGS) $(SEE_FLAGS) -c $(SQLITE3_SHELL_SRC) -o $@

$(OBJDIR)/th.o:	$(SRCDIR)/th.c
	$(XTCC) -c $(SRCDIR)/th.c -o $@

$(OBJDIR)/th_lang.o:	$(SRCDIR)/th_lang.c
	$(XTCC) -c $(SRCDIR)/th_lang.c -o $@

$(OBJDIR)/th_tcl.o:	$(SRCDIR)/th_tcl.c
	$(XTCC) -c $(SRCDIR)/th_tcl.c -o $@

$(OBJDIR)/pikchr.o:	$(SRCDIR_extsrc)/pikchr.c
	$(XTCC) $(PIKCHR_OPTIONS) -c $(SRCDIR_extsrc)/pikchr.c -o $@

Added win/Makefile.msc.






















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#
##############################################################################
# WARNING: DO NOT EDIT, AUTOMATICALLY GENERATED FILE (SEE "tools/makemake.tcl")
##############################################################################
#
#
# This file is automatically generated.  Instead of editing this
# file, edit "makemake.tcl" then run "tclsh makemake.tcl"
# to regenerate this file.
#
B       = ..
SRCDIR  = $(B)\src
SRCDIR_extsrc = $(B)\extsrc
SRCDIR_tools = $(B)\tools
T       = .
OBJDIR  = $(T)
OX      = $(OBJDIR)
O       = .obj
E       = .exe
P       = .pdb
DBGOPTS = /Od

INSTALLDIR = .
!ifdef DESTDIR
INSTALLDIR = $(DESTDIR)\$(INSTALLDIR)
!endif

# When building out of source, this Makefile needs to know the path to the base
# top-level directory for this project. Pass it on NMAKE command line via make
# variable B:
#   NMAKE /f "path\to\this\Makefile" B="path/to/fossil/root"
#
# NOTE: Make sure B path has no trailing backslash, UNIX-style path is OK too.
#
!if !exist("$(B)\.fossil-settings")
!error Please specify path to project base directory: B="path/to/fossil"
!endif

# Perl is only necessary if OpenSSL support is enabled and it is built from
# source code.  The PERLDIR environment variable, if it exists, should point
# to the directory containing the main Perl executable specified here (i.e.
# "perl.exe").
PERL    = perl.exe

# Enable use of available compiler optimizations?
!ifndef OPTIMIZATIONS
OPTIMIZATIONS = 2
!endif

# Enable debugging symbols?
!ifndef DEBUG
DEBUG = 0
!endif
!ifdef FOSSIL_DEBUG
DEBUG = 1
!endif

# Build the OpenSSL libraries?
!ifndef FOSSIL_BUILD_SSL
FOSSIL_BUILD_SSL = 0
!endif

# Build the included zlib library?
!ifndef FOSSIL_BUILD_ZLIB
FOSSIL_BUILD_ZLIB = 1
!endif

# Link everything except SQLite dynamically?
!ifndef FOSSIL_DYNAMIC_BUILD
FOSSIL_DYNAMIC_BUILD = 0
!endif

# Enable relative paths in external diff/gdiff?
!ifndef FOSSIL_ENABLE_EXEC_REL_PATHS
FOSSIL_ENABLE_EXEC_REL_PATHS = 0
!endif

# Enable the JSON API?
!ifndef FOSSIL_ENABLE_JSON
FOSSIL_ENABLE_JSON = 0
!endif

# Enable OpenSSL support?
!ifndef FOSSIL_ENABLE_SSL
FOSSIL_ENABLE_SSL = 0
!endif

# Enable the Tcl integration subsystem?
!ifndef FOSSIL_ENABLE_TCL
FOSSIL_ENABLE_TCL = 0
!endif

# Enable TH1 scripts in embedded documentation files?
!ifndef FOSSIL_ENABLE_TH1_DOCS
FOSSIL_ENABLE_TH1_DOCS = 0
!endif

# Enable TH1 hooks for commands and web pages?
!ifndef FOSSIL_ENABLE_TH1_HOOKS
FOSSIL_ENABLE_TH1_HOOKS = 0
!endif

# Enable support for Windows XP with Visual Studio 201x?
!ifndef FOSSIL_ENABLE_WINXP
FOSSIL_ENABLE_WINXP = 0
!endif

# Enable support for the SQLite Encryption Extension?
!ifndef USE_SEE
USE_SEE = 0
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
SSLDIR    = $(B)\compat\openssl
SSLINCDIR = $(SSLDIR)\include
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLLIBDIR = $(SSLDIR)
!else
SSLLIBDIR = $(SSLDIR)
!endif
SSLLIB    = libssl.lib libcrypto.lib user32.lib gdi32.lib crypt32.lib
!if "$(PLATFORM)"=="amd64" || "$(PLATFORM)"=="x64"
!message Using 'x64' platform for OpenSSL...
SSLCONFIG = VC-WIN64A no-asm no-ssl3 no-weak-ssl-ciphers
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLCONFIG = $(SSLCONFIG) shared
!else
SSLCONFIG = $(SSLCONFIG) no-shared
!endif
!elseif "$(PLATFORM)"=="ia64"
!message Using 'ia64' platform for OpenSSL...
SSLCONFIG = VC-WIN64I no-asm no-ssl3 no-weak-ssl-ciphers
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLCONFIG = $(SSLCONFIG) shared
!else
SSLCONFIG = $(SSLCONFIG) no-shared
!endif
!else
!message Assuming 'x86' platform for OpenSSL...
SSLCONFIG = VC-WIN32 no-asm no-ssl3 no-weak-ssl-ciphers
!if $(FOSSIL_DYNAMIC_BUILD)!=0
SSLCONFIG = $(SSLCONFIG) shared
!else
SSLCONFIG = $(SSLCONFIG) no-shared
!endif
!endif
!endif

!if $(FOSSIL_ENABLE_TCL)!=0
TCLDIR    = $(B)\compat\tcl-8.6
TCLSRCDIR = $(TCLDIR)
TCLINCDIR = $(TCLSRCDIR)\generic
!endif

# zlib options
ZINCDIR   = $(B)\compat\zlib
ZLIBDIR   = $(B)\compat\zlib

!if $(FOSSIL_DYNAMIC_BUILD)!=0
ZLIB      = zdll.lib
!else
ZLIB      = zlib.lib
!endif

INCL      = /I. /I"$(OX)" /I"$(SRCDIR)" /I"$(SRCDIR_extsrc)" /I"$(B)\win\include"

INCL      = $(INCL) /I"$(ZINCDIR)"

!if $(FOSSIL_ENABLE_SSL)!=0
INCL      = $(INCL) /I"$(SSLINCDIR)"
!endif

!if $(FOSSIL_ENABLE_TCL)!=0
INCL      = $(INCL) /I"$(TCLINCDIR)"
!endif

CFLAGS    = /nologo /W2 /WX /utf-8
LDFLAGS   =

CFLAGS    = $(CFLAGS) /D_CRT_SECURE_NO_DEPRECATE /D_CRT_SECURE_NO_WARNINGS
CFLAGS    = $(CFLAGS) /D_CRT_NONSTDC_NO_DEPRECATE /D_CRT_NONSTDC_NO_WARNINGS

!if $(FOSSIL_DYNAMIC_BUILD)!=0
LDFLAGS   = $(LDFLAGS) /MANIFEST
!else
LDFLAGS   = $(LDFLAGS) /NODEFAULTLIB:msvcrt /MANIFEST:NO
!endif

!if $(FOSSIL_ENABLE_WINXP)!=0
XPCFLAGS  = $(XPCFLAGS) /D_WIN32_WINNT=0x0501 /D_USING_V110_SDK71_=1
CFLAGS    = $(CFLAGS) $(XPCFLAGS)
#
# NOTE: For regular builds, /OSVERSION defaults to the /SUBSYSTEM version and
# explicit initialization is redundant, but is required for post-built edits.
#
!if "$(PLATFORM)"=="amd64" || "$(PLATFORM)"=="x64"
XPLDFLAGS = $(XPLDFLAGS) /OSVERSION:5.02 /SUBSYSTEM:CONSOLE,5.02
!else
XPLDFLAGS = $(XPLDFLAGS) /OSVERSION:5.01 /SUBSYSTEM:CONSOLE,5.01
!endif
LDFLAGS   = $(LDFLAGS) $(XPLDFLAGS)
#
# NOTE: Only XPCFLAGS is forwarded to the OpenSSL configuration, and XPLDFLAGS
# is applied in a separate post-build step, see below for more information.
#
!if $(FOSSIL_ENABLE_SSL)!=0
SSLCONFIG = $(SSLCONFIG) $(XPCFLAGS)
!endif
!endif

!if $(FOSSIL_DYNAMIC_BUILD)!=0
!if $(DEBUG)!=0
CRTFLAGS = /MDd
!else
CRTFLAGS = /MD
!endif
!else
!if $(DEBUG)!=0
CRTFLAGS = /MTd
!else
CRTFLAGS = /MT
!endif
!endif

!if $(OPTIMIZATIONS)>3
RELOPTS = /Os
!elseif $(OPTIMIZATIONS)>2
RELOPTS = /Ox
!elseif $(OPTIMIZATIONS)>1
RELOPTS = /O2
!elseif $(OPTIMIZATIONS)>0
RELOPTS = /O1
!else
RELOPTS =
!endif

!if $(DEBUG)!=0
CFLAGS    = $(CFLAGS) /Zi $(CRTFLAGS) $(DBGOPTS) /DFOSSIL_DEBUG /DTH_MEMDEBUG
LDFLAGS   = $(LDFLAGS) /DEBUG
!else
CFLAGS    = $(CFLAGS) $(CRTFLAGS) $(RELOPTS)
!endif

BCC       = $(CC) $(CFLAGS)
TCC       = $(CC) /c $(CFLAGS) $(MSCDEF) $(INCL)
RCC       = $(RC) /D_WIN32 /D_MSC_VER $(MSCDEF) $(INCL)
MTC       = mt
LIBS      = ws2_32.lib advapi32.lib dnsapi.lib
LIBDIR    =

!if $(FOSSIL_DYNAMIC_BUILD)!=0
TCC       = $(TCC) /DFOSSIL_DYNAMIC_BUILD=1
RCC       = $(RCC) /DFOSSIL_DYNAMIC_BUILD=1
!endif

LIBS      = $(LIBS) $(ZLIB)
LIBDIR    = $(LIBDIR) /LIBPATH:"$(ZLIBDIR)"

!if $(FOSSIL_ENABLE_JSON)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_JSON=1
RCC       = $(RCC) /DFOSSIL_ENABLE_JSON=1
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_SSL=1
RCC       = $(RCC) /DFOSSIL_ENABLE_SSL=1
LIBS      = $(LIBS) $(SSLLIB)
LIBDIR    = $(LIBDIR) /LIBPATH:"$(SSLLIBDIR)"
!endif

!if $(FOSSIL_ENABLE_EXEC_REL_PATHS)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_EXEC_REL_PATHS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_EXEC_REL_PATHS=1
!endif

!if $(FOSSIL_ENABLE_TH1_DOCS)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_TH1_DOCS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TH1_DOCS=1
!endif

!if $(FOSSIL_ENABLE_TH1_HOOKS)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_TH1_HOOKS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TH1_HOOKS=1
!endif

!if $(FOSSIL_ENABLE_TCL)!=0
TCC       = $(TCC) /DFOSSIL_ENABLE_TCL=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TCL=1
TCC       = $(TCC) /DFOSSIL_ENABLE_TCL_STUBS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TCL_STUBS=1
TCC       = $(TCC) /DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
RCC       = $(RCC) /DFOSSIL_ENABLE_TCL_PRIVATE_STUBS=1
TCC       = $(TCC) /DUSE_TCL_STUBS=1
RCC       = $(RCC) /DUSE_TCL_STUBS=1
!endif

!if $(USE_SEE)!=0
TCC       = $(TCC) /DUSE_SEE=1
RCC       = $(RCC) /DUSE_SEE=1
!endif

SQLITE_OPTIONS = /DNDEBUG=1 \
                 /DSQLITE_DQS=0 \
                 /DSQLITE_THREADSAFE=0 \
                 /DSQLITE_DEFAULT_MEMSTATUS=0 \
                 /DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                 /DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                 /DSQLITE_OMIT_DECLTYPE \
                 /DSQLITE_OMIT_DEPRECATED \
                 /DSQLITE_OMIT_PROGRESS_CALLBACK \
                 /DSQLITE_OMIT_SHARED_CACHE \
                 /DSQLITE_OMIT_LOAD_EXTENSION \
                 /DSQLITE_MAX_EXPR_DEPTH=0 \
                 /DSQLITE_ENABLE_LOCKING_STYLE=0 \
                 /DSQLITE_DEFAULT_FILE_FORMAT=4 \
                 /DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                 /DSQLITE_ENABLE_FTS4 \
                 /DSQLITE_ENABLE_DBSTAT_VTAB \
                 /DSQLITE_ENABLE_FTS5 \
                 /DSQLITE_ENABLE_STMTVTAB \
                 /DSQLITE_HAVE_ZLIB \
                 /DSQLITE_ENABLE_DBPAGE_VTAB \
                 /DSQLITE_TRUSTED_SCHEMA=0 \
                 /DHAVE_USLEEP \
                 /DSQLITE_WIN32_NO_ANSI

SHELL_OPTIONS = /DNDEBUG=1 \
                /DSQLITE_DQS=0 \
                /DSQLITE_THREADSAFE=0 \
                /DSQLITE_DEFAULT_MEMSTATUS=0 \
                /DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 \
                /DSQLITE_LIKE_DOESNT_MATCH_BLOBS \
                /DSQLITE_OMIT_DECLTYPE \
                /DSQLITE_OMIT_DEPRECATED \
                /DSQLITE_OMIT_PROGRESS_CALLBACK \
                /DSQLITE_OMIT_SHARED_CACHE \
                /DSQLITE_OMIT_LOAD_EXTENSION \
                /DSQLITE_MAX_EXPR_DEPTH=0 \
                /DSQLITE_ENABLE_LOCKING_STYLE=0 \
                /DSQLITE_DEFAULT_FILE_FORMAT=4 \
                /DSQLITE_ENABLE_EXPLAIN_COMMENTS \
                /DSQLITE_ENABLE_FTS4 \
                /DSQLITE_ENABLE_DBSTAT_VTAB \
                /DSQLITE_ENABLE_FTS5 \
                /DSQLITE_ENABLE_STMTVTAB \
                /DSQLITE_HAVE_ZLIB \
                /DSQLITE_ENABLE_DBPAGE_VTAB \
                /DSQLITE_TRUSTED_SCHEMA=0 \
                /DHAVE_USLEEP \
                /Dmain=sqlite3_shell \
                /DSQLITE_SHELL_IS_UTF8=1 \
                /DSQLITE_OMIT_LOAD_EXTENSION=1 \
                /DUSE_SYSTEM_SQLITE=$(USE_SYSTEM_SQLITE) \
                /DSQLITE_SHELL_DBNAME_PROC=sqlcmd_get_dbname \
                /DSQLITE_SHELL_INIT_PROC=sqlcmd_init_proc \
                /Daccess=file_access \
                /Dsystem=fossil_system \
                /Dgetenv=fossil_getenv \
                /Dfopen=fossil_fopen

PIKCHR_OPTIONS = /DPIKCHR_TOKEN_LIMIT=10000

SRC   = "$(OX)\add_.c" \
        "$(OX)\ajax_.c" \
        "$(OX)\alerts_.c" \
        "$(OX)\allrepo_.c" \
        "$(OX)\attach_.c" \
        "$(OX)\backlink_.c" \
        "$(OX)\backoffice_.c" \
        "$(OX)\bag_.c" \
        "$(OX)\bisect_.c" \
        "$(OX)\blob_.c" \
        "$(OX)\branch_.c" \
        "$(OX)\browse_.c" \
        "$(OX)\builtin_.c" \
        "$(OX)\bundle_.c" \
        "$(OX)\cache_.c" \
        "$(OX)\capabilities_.c" \
        "$(OX)\captcha_.c" \
        "$(OX)\cgi_.c" \
        "$(OX)\chat_.c" \
        "$(OX)\checkin_.c" \
        "$(OX)\checkout_.c" \
        "$(OX)\clearsign_.c" \
        "$(OX)\clone_.c" \
        "$(OX)\color_.c" \
        "$(OX)\comformat_.c" \
        "$(OX)\configure_.c" \
        "$(OX)\content_.c" \
        "$(OX)\cookies_.c" \
        "$(OX)\db_.c" \
        "$(OX)\delta_.c" \
        "$(OX)\deltacmd_.c" \
        "$(OX)\deltafunc_.c" \
        "$(OX)\descendants_.c" \
        "$(OX)\diff_.c" \
        "$(OX)\diffcmd_.c" \
        "$(OX)\dispatch_.c" \
        "$(OX)\doc_.c" \
        "$(OX)\encode_.c" \
        "$(OX)\etag_.c" \
        "$(OX)\event_.c" \
        "$(OX)\export_.c" \
        "$(OX)\extcgi_.c" \
        "$(OX)\file_.c" \
        "$(OX)\fileedit_.c" \
        "$(OX)\finfo_.c" \
        "$(OX)\foci_.c" \
        "$(OX)\forum_.c" \
        "$(OX)\fshell_.c" \
        "$(OX)\fusefs_.c" \
        "$(OX)\fuzz_.c" \
        "$(OX)\glob_.c" \
        "$(OX)\graph_.c" \
        "$(OX)\gzip_.c" \
        "$(OX)\hname_.c" \
        "$(OX)\hook_.c" \
        "$(OX)\http_.c" \
        "$(OX)\http_socket_.c" \
        "$(OX)\http_ssl_.c" \
        "$(OX)\http_transport_.c" \
        "$(OX)\import_.c" \
        "$(OX)\info_.c" \
        "$(OX)\interwiki_.c" \
        "$(OX)\json_.c" \
        "$(OX)\json_artifact_.c" \
        "$(OX)\json_branch_.c" \
        "$(OX)\json_config_.c" \
        "$(OX)\json_diff_.c" \
        "$(OX)\json_dir_.c" \
        "$(OX)\json_finfo_.c" \
        "$(OX)\json_login_.c" \
        "$(OX)\json_query_.c" \
        "$(OX)\json_report_.c" \
        "$(OX)\json_status_.c" \
        "$(OX)\json_tag_.c" \
        "$(OX)\json_timeline_.c" \
        "$(OX)\json_user_.c" \
        "$(OX)\json_wiki_.c" \
        "$(OX)\leaf_.c" \
        "$(OX)\loadctrl_.c" \
        "$(OX)\login_.c" \
        "$(OX)\lookslike_.c" \
        "$(OX)\main_.c" \
        "$(OX)\manifest_.c" \
        "$(OX)\markdown_.c" \
        "$(OX)\markdown_html_.c" \
        "$(OX)\md5_.c" \
        "$(OX)\merge_.c" \
        "$(OX)\merge3_.c" \
        "$(OX)\moderate_.c" \
        "$(OX)\name_.c" \
        "$(OX)\patch_.c" \
        "$(OX)\path_.c" \
        "$(OX)\piechart_.c" \
        "$(OX)\pikchrshow_.c" \
        "$(OX)\pivot_.c" \
        "$(OX)\popen_.c" \
        "$(OX)\pqueue_.c" \
        "$(OX)\printf_.c" \
        "$(OX)\publish_.c" \
        "$(OX)\purge_.c" \
        "$(OX)\rebuild_.c" \
        "$(OX)\regexp_.c" \
        "$(OX)\repolist_.c" \
        "$(OX)\report_.c" \
        "$(OX)\rss_.c" \
        "$(OX)\schema_.c" \
        "$(OX)\search_.c" \
        "$(OX)\security_audit_.c" \
        "$(OX)\setup_.c" \
        "$(OX)\setupuser_.c" \
        "$(OX)\sha1_.c" \
        "$(OX)\sha1hard_.c" \
        "$(OX)\sha3_.c" \
        "$(OX)\shun_.c" \
        "$(OX)\sitemap_.c" \
        "$(OX)\skins_.c" \
        "$(OX)\smtp_.c" \
        "$(OX)\sqlcmd_.c" \
        "$(OX)\stash_.c" \
        "$(OX)\stat_.c" \
        "$(OX)\statrep_.c" \
        "$(OX)\style_.c" \
        "$(OX)\sync_.c" \
        "$(OX)\tag_.c" \
        "$(OX)\tar_.c" \
        "$(OX)\terminal_.c" \
        "$(OX)\th_main_.c" \
        "$(OX)\timeline_.c" \
        "$(OX)\tkt_.c" \
        "$(OX)\tktsetup_.c" \
        "$(OX)\undo_.c" \
        "$(OX)\unicode_.c" \
        "$(OX)\unversioned_.c" \
        "$(OX)\update_.c" \
        "$(OX)\url_.c" \
        "$(OX)\user_.c" \
        "$(OX)\utf8_.c" \
        "$(OX)\util_.c" \
        "$(OX)\verify_.c" \
        "$(OX)\vfile_.c" \
        "$(OX)\wiki_.c" \
        "$(OX)\wikiformat_.c" \
        "$(OX)\winfile_.c" \
        "$(OX)\winhttp_.c" \
        "$(OX)\xfer_.c" \
        "$(OX)\xfersetup_.c" \
        "$(OX)\zip_.c" \
        "$(SRCDIR_extsrc)\pikchr.c"

EXTRA_FILES   = "$(SRCDIR)\..\extsrc\pikchr-worker.js" \
        "$(SRCDIR)\..\extsrc\pikchr.js" \
        "$(SRCDIR)\..\extsrc\pikchr.wasm" \
        "$(SRCDIR)\..\skins\ardoise\css.txt" \
        "$(SRCDIR)\..\skins\ardoise\details.txt" \
        "$(SRCDIR)\..\skins\ardoise\footer.txt" \
        "$(SRCDIR)\..\skins\ardoise\header.txt" \
        "$(SRCDIR)\..\skins\black_and_white\css.txt" \
        "$(SRCDIR)\..\skins\black_and_white\details.txt" \
        "$(SRCDIR)\..\skins\black_and_white\footer.txt" \
        "$(SRCDIR)\..\skins\black_and_white\header.txt" \
        "$(SRCDIR)\..\skins\blitz\css.txt" \
        "$(SRCDIR)\..\skins\blitz\details.txt" \
        "$(SRCDIR)\..\skins\blitz\footer.txt" \
        "$(SRCDIR)\..\skins\blitz\header.txt" \
        "$(SRCDIR)\..\skins\blitz\ticket.txt" \
        "$(SRCDIR)\..\skins\darkmode\css.txt" \
        "$(SRCDIR)\..\skins\darkmode\details.txt" \
        "$(SRCDIR)\..\skins\darkmode\footer.txt" \
        "$(SRCDIR)\..\skins\darkmode\header.txt" \
        "$(SRCDIR)\..\skins\default\css.txt" \
        "$(SRCDIR)\..\skins\default\details.txt" \
        "$(SRCDIR)\..\skins\default\footer.txt" \
        "$(SRCDIR)\..\skins\default\header.txt" \
        "$(SRCDIR)\..\skins\eagle\css.txt" \
        "$(SRCDIR)\..\skins\eagle\details.txt" \
        "$(SRCDIR)\..\skins\eagle\footer.txt" \
        "$(SRCDIR)\..\skins\eagle\header.txt" \
        "$(SRCDIR)\..\skins\etienne\css.txt" \
        "$(SRCDIR)\..\skins\etienne\details.txt" \
        "$(SRCDIR)\..\skins\etienne\footer.txt" \
        "$(SRCDIR)\..\skins\etienne\header.txt" \
        "$(SRCDIR)\..\skins\khaki\css.txt" \
        "$(SRCDIR)\..\skins\khaki\details.txt" \
        "$(SRCDIR)\..\skins\khaki\footer.txt" \
        "$(SRCDIR)\..\skins\khaki\header.txt" \
        "$(SRCDIR)\..\skins\original\css.txt" \
        "$(SRCDIR)\..\skins\original\details.txt" \
        "$(SRCDIR)\..\skins\original\footer.txt" \
        "$(SRCDIR)\..\skins\original\header.txt" \
        "$(SRCDIR)\..\skins\plain_gray\css.txt" \
        "$(SRCDIR)\..\skins\plain_gray\details.txt" \
        "$(SRCDIR)\..\skins\plain_gray\footer.txt" \
        "$(SRCDIR)\..\skins\plain_gray\header.txt" \
        "$(SRCDIR)\..\skins\xekri\css.txt" \
        "$(SRCDIR)\..\skins\xekri\details.txt" \
        "$(SRCDIR)\..\skins\xekri\footer.txt" \
        "$(SRCDIR)\..\skins\xekri\header.txt" \
        "$(SRCDIR)\accordion.js" \
        "$(SRCDIR)\alerts\bflat2.wav" \
        "$(SRCDIR)\alerts\bflat3.wav" \
        "$(SRCDIR)\alerts\bloop.wav" \
        "$(SRCDIR)\alerts\plunk.wav" \
        "$(SRCDIR)\ci_edit.js" \
        "$(SRCDIR)\copybtn.js" \
        "$(SRCDIR)\default.css" \
        "$(SRCDIR)\diff.js" \
        "$(SRCDIR)\diff.tcl" \
        "$(SRCDIR)\forum.js" \
        "$(SRCDIR)\fossil.bootstrap.js" \
        "$(SRCDIR)\fossil.confirmer.js" \
        "$(SRCDIR)\fossil.copybutton.js" \
        "$(SRCDIR)\fossil.diff.js" \
        "$(SRCDIR)\fossil.dom.js" \
        "$(SRCDIR)\fossil.fetch.js" \
        "$(SRCDIR)\fossil.numbered-lines.js" \
        "$(SRCDIR)\fossil.page.brlist.js" \
        "$(SRCDIR)\fossil.page.chat.js" \
        "$(SRCDIR)\fossil.page.fileedit.js" \
        "$(SRCDIR)\fossil.page.forumpost.js" \
        "$(SRCDIR)\fossil.page.pikchrshow.js" \
        "$(SRCDIR)\fossil.page.pikchrshowasm.js" \
        "$(SRCDIR)\fossil.page.whistory.js" \
        "$(SRCDIR)\fossil.page.wikiedit.js" \
        "$(SRCDIR)\fossil.pikchr.js" \
        "$(SRCDIR)\fossil.popupwidget.js" \
        "$(SRCDIR)\fossil.storage.js" \
        "$(SRCDIR)\fossil.tabs.js" \
        "$(SRCDIR)\fossil.wikiedit-wysiwyg.js" \
        "$(SRCDIR)\graph.js" \
        "$(SRCDIR)\hbmenu.js" \
        "$(SRCDIR)\href.js" \
        "$(SRCDIR)\login.js" \
        "$(SRCDIR)\markdown.md" \
        "$(SRCDIR)\menu.js" \
        "$(SRCDIR)\scroll.js" \
        "$(SRCDIR)\skin.js" \
        "$(SRCDIR)\sorttable.js" \
        "$(SRCDIR)\sounds\0.wav" \
        "$(SRCDIR)\sounds\1.wav" \
        "$(SRCDIR)\sounds\2.wav" \
        "$(SRCDIR)\sounds\3.wav" \
        "$(SRCDIR)\sounds\4.wav" \
        "$(SRCDIR)\sounds\5.wav" \
        "$(SRCDIR)\sounds\6.wav" \
        "$(SRCDIR)\sounds\7.wav" \
        "$(SRCDIR)\sounds\8.wav" \
        "$(SRCDIR)\sounds\9.wav" \
        "$(SRCDIR)\sounds\a.wav" \
        "$(SRCDIR)\sounds\b.wav" \
        "$(SRCDIR)\sounds\c.wav" \
        "$(SRCDIR)\sounds\d.wav" \
        "$(SRCDIR)\sounds\e.wav" \
        "$(SRCDIR)\sounds\f.wav" \
        "$(SRCDIR)\style.admin_log.css" \
        "$(SRCDIR)\style.chat.css" \
        "$(SRCDIR)\style.fileedit.css" \
        "$(SRCDIR)\style.pikchrshow.css" \
        "$(SRCDIR)\style.uvlist.css" \
        "$(SRCDIR)\style.wikiedit.css" \
        "$(SRCDIR)\tree.js" \
        "$(SRCDIR)\useredit.js" \
        "$(SRCDIR)\wiki.wiki"

OBJ   = "$(OX)\add$O" \
        "$(OX)\ajax$O" \
        "$(OX)\alerts$O" \
        "$(OX)\allrepo$O" \
        "$(OX)\attach$O" \
        "$(OX)\backlink$O" \
        "$(OX)\backoffice$O" \
        "$(OX)\bag$O" \
        "$(OX)\bisect$O" \
        "$(OX)\blob$O" \
        "$(OX)\branch$O" \
        "$(OX)\browse$O" \
        "$(OX)\builtin$O" \
        "$(OX)\bundle$O" \
        "$(OX)\cache$O" \
        "$(OX)\capabilities$O" \
        "$(OX)\captcha$O" \
        "$(OX)\cgi$O" \
        "$(OX)\chat$O" \
        "$(OX)\checkin$O" \
        "$(OX)\checkout$O" \
        "$(OX)\clearsign$O" \
        "$(OX)\clone$O" \
        "$(OX)\color$O" \
        "$(OX)\comformat$O" \
        "$(OX)\configure$O" \
        "$(OX)\content$O" \
        "$(OX)\cookies$O" \
        "$(OX)\cson_amalgamation$O" \
        "$(OX)\db$O" \
        "$(OX)\delta$O" \
        "$(OX)\deltacmd$O" \
        "$(OX)\deltafunc$O" \
        "$(OX)\descendants$O" \
        "$(OX)\diff$O" \
        "$(OX)\diffcmd$O" \
        "$(OX)\dispatch$O" \
        "$(OX)\doc$O" \
        "$(OX)\encode$O" \
        "$(OX)\etag$O" \
        "$(OX)\event$O" \
        "$(OX)\export$O" \
        "$(OX)\extcgi$O" \
        "$(OX)\file$O" \
        "$(OX)\fileedit$O" \
        "$(OX)\finfo$O" \
        "$(OX)\foci$O" \
        "$(OX)\forum$O" \
        "$(OX)\fshell$O" \
        "$(OX)\fusefs$O" \
        "$(OX)\fuzz$O" \
        "$(OX)\glob$O" \
        "$(OX)\graph$O" \
        "$(OX)\gzip$O" \
        "$(OX)\hname$O" \
        "$(OX)\hook$O" \
        "$(OX)\http$O" \
        "$(OX)\http_socket$O" \
        "$(OX)\http_ssl$O" \
        "$(OX)\http_transport$O" \
        "$(OX)\import$O" \
        "$(OX)\info$O" \
        "$(OX)\interwiki$O" \
        "$(OX)\json$O" \
        "$(OX)\json_artifact$O" \
        "$(OX)\json_branch$O" \
        "$(OX)\json_config$O" \
        "$(OX)\json_diff$O" \
        "$(OX)\json_dir$O" \
        "$(OX)\json_finfo$O" \
        "$(OX)\json_login$O" \
        "$(OX)\json_query$O" \
        "$(OX)\json_report$O" \
        "$(OX)\json_status$O" \
        "$(OX)\json_tag$O" \
        "$(OX)\json_timeline$O" \
        "$(OX)\json_user$O" \
        "$(OX)\json_wiki$O" \
        "$(OX)\leaf$O" \
        "$(OX)\loadctrl$O" \
        "$(OX)\login$O" \
        "$(OX)\lookslike$O" \
        "$(OX)\main$O" \
        "$(OX)\manifest$O" \
        "$(OX)\markdown$O" \
        "$(OX)\markdown_html$O" \
        "$(OX)\md5$O" \
        "$(OX)\merge$O" \
        "$(OX)\merge3$O" \
        "$(OX)\moderate$O" \
        "$(OX)\name$O" \
        "$(OX)\patch$O" \
        "$(OX)\path$O" \
        "$(OX)\piechart$O" \
        "$(OX)\pikchr$O" \
        "$(OX)\pikchrshow$O" \
        "$(OX)\pivot$O" \
        "$(OX)\popen$O" \
        "$(OX)\pqueue$O" \
        "$(OX)\printf$O" \
        "$(OX)\publish$O" \
        "$(OX)\purge$O" \
        "$(OX)\rebuild$O" \
        "$(OX)\regexp$O" \
        "$(OX)\repolist$O" \
        "$(OX)\report$O" \
        "$(OX)\rss$O" \
        "$(OX)\schema$O" \
        "$(OX)\search$O" \
        "$(OX)\security_audit$O" \
        "$(OX)\setup$O" \
        "$(OX)\setupuser$O" \
        "$(OX)\sha1$O" \
        "$(OX)\sha1hard$O" \
        "$(OX)\sha3$O" \
        "$(OX)\shell$O" \
        "$(OX)\shun$O" \
        "$(OX)\sitemap$O" \
        "$(OX)\skins$O" \
        "$(OX)\smtp$O" \
        "$(OX)\sqlcmd$O" \
        "$(OX)\sqlite3$O" \
        "$(OX)\stash$O" \
        "$(OX)\stat$O" \
        "$(OX)\statrep$O" \
        "$(OX)\style$O" \
        "$(OX)\sync$O" \
        "$(OX)\tag$O" \
        "$(OX)\tar$O" \
        "$(OX)\terminal$O" \
        "$(OX)\th$O" \
        "$(OX)\th_lang$O" \
        "$(OX)\th_main$O" \
        "$(OX)\th_tcl$O" \
        "$(OX)\timeline$O" \
        "$(OX)\tkt$O" \
        "$(OX)\tktsetup$O" \
        "$(OX)\undo$O" \
        "$(OX)\unicode$O" \
        "$(OX)\unversioned$O" \
        "$(OX)\update$O" \
        "$(OX)\url$O" \
        "$(OX)\user$O" \
        "$(OX)\utf8$O" \
        "$(OX)\util$O" \
        "$(OX)\verify$O" \
        "$(OX)\vfile$O" \
        "$(OX)\wiki$O" \
        "$(OX)\wikiformat$O" \
        "$(OX)\winfile$O" \
        "$(OX)\winhttp$O" \
        "$(OX)\xfer$O" \
        "$(OX)\xfersetup$O" \
        "$(OX)\zip$O" \
        "$(OX)\fossil.res"


!ifndef BASEAPPNAME
BASEAPPNAME = fossil
!endif

APPNAME     = $(OX)\$(BASEAPPNAME)$(E)
PDBNAME     = $(OX)\$(BASEAPPNAME)$(P)
APPTARGETS  =

all: "$(OX)" "$(APPNAME)"

$(BASEAPPNAME): "$(APPNAME)"

$(BASEAPPNAME)$(E): "$(APPNAME)"

install: "$(APPNAME)"
	echo F | xcopy /Y "$(APPNAME)" "$(INSTALLDIR)"\*
!if $(DEBUG)!=0
	echo F | xcopy /Y "$(PDBNAME)" "$(INSTALLDIR)"\*
!endif

$(OX):
	@-mkdir $@

zlib:
	@echo Building zlib from "$(ZLIBDIR)"...
!if $(FOSSIL_ENABLE_WINXP)!=0
	@pushd "$(ZLIBDIR)" && $(MAKE) /f win32\Makefile.msc $(ZLIB) "CC=cl $(XPCFLAGS)" "LD=link $(XPLDFLAGS)" && popd
!else
	@pushd "$(ZLIBDIR)" && $(MAKE) /f win32\Makefile.msc $(ZLIB) && popd
!endif

clean-zlib:
	@pushd "$(ZLIBDIR)" && $(MAKE) /f win32\Makefile.msc clean && popd

!if $(FOSSIL_ENABLE_SSL)!=0
openssl:
	@echo Building OpenSSL from "$(SSLDIR)"...
!if $(FOSSIL_ENABLE_WINXP)!=0
	@echo Passing XPCFLAGS = [ $(XPCFLAGS) ] to the OpenSSL configuration...
!endif
!ifdef PERLDIR
	@pushd "$(SSLDIR)" && "$(PERLDIR)\$(PERL)" Configure $(SSLCONFIG) && popd
!else
	@pushd "$(SSLDIR)" && "$(PERL)" Configure $(SSLCONFIG) && popd
!endif
	@pushd "$(SSLDIR)" && $(MAKE) && popd
!if $(FOSSIL_ENABLE_WINXP)!=0 && $(FOSSIL_DYNAMIC_BUILD)!=0
#
# NOTE: Appending custom linker flags to the OpenSSL default linker flags is
# somewhat difficult, as summarized in this Fossil Forum post:
#
#   https://fossil-scm.org/forum/forumpost/a9a2d6af28b
#
# Therefore the custom linker flags required for Windows XP dynamic builds are
# applied in a separate post-build step.
#
# If the build stops here, or if the custom linker flags are outside the scope
# of `editbin` or `link /EDIT` (i.e. additional libraries), consider tweaking
# the OpenSSL makefile by hand.
#
# Also note that this step changes the subsystem for the OpenSSL DLLs from
# WINDOWS to CONSOLE, but which has no effect on DLLs.
#
	@echo Applying XPLDFLAGS = [ $(XPLDFLAGS) ] to the OpenSSL DLLs...
	@for /F "usebackq delims=" %F in (`dir /A:-D/B "$(SSLDIR)\*.dll" 2^>nul`) \
		do @( \
			echo %F & \
			link /EDIT /NOLOGO $(XPLDFLAGS) "$(SSLDIR)\%F" || exit 1 \
		)
!endif

clean-openssl:
	@pushd "$(SSLDIR)" && $(MAKE) clean && popd
!endif

!if $(FOSSIL_BUILD_ZLIB)!=0
APPTARGETS = $(APPTARGETS) zlib
!endif

!if $(FOSSIL_ENABLE_SSL)!=0
!if $(FOSSIL_BUILD_SSL)!=0
APPTARGETS = $(APPTARGETS) openssl
!endif
!endif

"$(APPNAME)" : $(APPTARGETS) "$(OBJDIR)\translate$E" "$(OBJDIR)\mkindex$E" "$(OBJDIR)\codecheck1$E" "$(OX)\headers" $(OBJ) "$(OX)\linkopts"
	"$(OBJDIR)\codecheck1$E" $(SRC)
	link $(LDFLAGS) /OUT:$@ /PDB:$(@D)\ $(LIBDIR) Wsetargv.obj "$(OX)\fossil.res" @"$(OX)\linkopts"
	if exist "$(B)\win\fossil.exe.manifest" \
		$(MTC) -nologo -manifest "$(B)\win\fossil.exe.manifest" -outputresource:$@;1

"$(OX)\linkopts": "$(B)\win\Makefile.msc"
	echo "$(OX)\add.obj" > $@
	echo "$(OX)\ajax.obj" >> $@
	echo "$(OX)\alerts.obj" >> $@
	echo "$(OX)\allrepo.obj" >> $@
	echo "$(OX)\attach.obj" >> $@
	echo "$(OX)\backlink.obj" >> $@
	echo "$(OX)\backoffice.obj" >> $@
	echo "$(OX)\bag.obj" >> $@
	echo "$(OX)\bisect.obj" >> $@
	echo "$(OX)\blob.obj" >> $@
	echo "$(OX)\branch.obj" >> $@
	echo "$(OX)\browse.obj" >> $@
	echo "$(OX)\builtin.obj" >> $@
	echo "$(OX)\bundle.obj" >> $@
	echo "$(OX)\cache.obj" >> $@
	echo "$(OX)\capabilities.obj" >> $@
	echo "$(OX)\captcha.obj" >> $@
	echo "$(OX)\cgi.obj" >> $@
	echo "$(OX)\chat.obj" >> $@
	echo "$(OX)\checkin.obj" >> $@
	echo "$(OX)\checkout.obj" >> $@
	echo "$(OX)\clearsign.obj" >> $@
	echo "$(OX)\clone.obj" >> $@
	echo "$(OX)\color.obj" >> $@
	echo "$(OX)\comformat.obj" >> $@
	echo "$(OX)\configure.obj" >> $@
	echo "$(OX)\content.obj" >> $@
	echo "$(OX)\cookies.obj" >> $@
	echo "$(OX)\cson_amalgamation.obj" >> $@
	echo "$(OX)\db.obj" >> $@
	echo "$(OX)\delta.obj" >> $@
	echo "$(OX)\deltacmd.obj" >> $@
	echo "$(OX)\deltafunc.obj" >> $@
	echo "$(OX)\descendants.obj" >> $@
	echo "$(OX)\diff.obj" >> $@
	echo "$(OX)\diffcmd.obj" >> $@
	echo "$(OX)\dispatch.obj" >> $@
	echo "$(OX)\doc.obj" >> $@
	echo "$(OX)\encode.obj" >> $@
	echo "$(OX)\etag.obj" >> $@
	echo "$(OX)\event.obj" >> $@
	echo "$(OX)\export.obj" >> $@
	echo "$(OX)\extcgi.obj" >> $@
	echo "$(OX)\file.obj" >> $@
	echo "$(OX)\fileedit.obj" >> $@
	echo "$(OX)\finfo.obj" >> $@
	echo "$(OX)\foci.obj" >> $@
	echo "$(OX)\forum.obj" >> $@
	echo "$(OX)\fshell.obj" >> $@
	echo "$(OX)\fusefs.obj" >> $@
	echo "$(OX)\fuzz.obj" >> $@
	echo "$(OX)\glob.obj" >> $@
	echo "$(OX)\graph.obj" >> $@
	echo "$(OX)\gzip.obj" >> $@
	echo "$(OX)\hname.obj" >> $@
	echo "$(OX)\hook.obj" >> $@
	echo "$(OX)\http.obj" >> $@
	echo "$(OX)\http_socket.obj" >> $@
	echo "$(OX)\http_ssl.obj" >> $@
	echo "$(OX)\http_transport.obj" >> $@
	echo "$(OX)\import.obj" >> $@
	echo "$(OX)\info.obj" >> $@
	echo "$(OX)\interwiki.obj" >> $@
	echo "$(OX)\json.obj" >> $@
	echo "$(OX)\json_artifact.obj" >> $@
	echo "$(OX)\json_branch.obj" >> $@
	echo "$(OX)\json_config.obj" >> $@
	echo "$(OX)\json_diff.obj" >> $@
	echo "$(OX)\json_dir.obj" >> $@
	echo "$(OX)\json_finfo.obj" >> $@
	echo "$(OX)\json_login.obj" >> $@
	echo "$(OX)\json_query.obj" >> $@
	echo "$(OX)\json_report.obj" >> $@
	echo "$(OX)\json_status.obj" >> $@
	echo "$(OX)\json_tag.obj" >> $@
	echo "$(OX)\json_timeline.obj" >> $@
	echo "$(OX)\json_user.obj" >> $@
	echo "$(OX)\json_wiki.obj" >> $@
	echo "$(OX)\leaf.obj" >> $@
	echo "$(OX)\loadctrl.obj" >> $@
	echo "$(OX)\login.obj" >> $@
	echo "$(OX)\lookslike.obj" >> $@
	echo "$(OX)\main.obj" >> $@
	echo "$(OX)\manifest.obj" >> $@
	echo "$(OX)\markdown.obj" >> $@
	echo "$(OX)\markdown_html.obj" >> $@
	echo "$(OX)\md5.obj" >> $@
	echo "$(OX)\merge.obj" >> $@
	echo "$(OX)\merge3.obj" >> $@
	echo "$(OX)\moderate.obj" >> $@
	echo "$(OX)\name.obj" >> $@
	echo "$(OX)\patch.obj" >> $@
	echo "$(OX)\path.obj" >> $@
	echo "$(OX)\piechart.obj" >> $@
	echo "$(OX)\pikchr.obj" >> $@
	echo "$(OX)\pikchrshow.obj" >> $@
	echo "$(OX)\pivot.obj" >> $@
	echo "$(OX)\popen.obj" >> $@
	echo "$(OX)\pqueue.obj" >> $@
	echo "$(OX)\printf.obj" >> $@
	echo "$(OX)\publish.obj" >> $@
	echo "$(OX)\purge.obj" >> $@
	echo "$(OX)\rebuild.obj" >> $@
	echo "$(OX)\regexp.obj" >> $@
	echo "$(OX)\repolist.obj" >> $@
	echo "$(OX)\report.obj" >> $@
	echo "$(OX)\rss.obj" >> $@
	echo "$(OX)\schema.obj" >> $@
	echo "$(OX)\search.obj" >> $@
	echo "$(OX)\security_audit.obj" >> $@
	echo "$(OX)\setup.obj" >> $@
	echo "$(OX)\setupuser.obj" >> $@
	echo "$(OX)\sha1.obj" >> $@
	echo "$(OX)\sha1hard.obj" >> $@
	echo "$(OX)\sha3.obj" >> $@
	echo "$(OX)\shell.obj" >> $@
	echo "$(OX)\shun.obj" >> $@
	echo "$(OX)\sitemap.obj" >> $@
	echo "$(OX)\skins.obj" >> $@
	echo "$(OX)\smtp.obj" >> $@
	echo "$(OX)\sqlcmd.obj" >> $@
	echo "$(OX)\sqlite3.obj" >> $@
	echo "$(OX)\stash.obj" >> $@
	echo "$(OX)\stat.obj" >> $@
	echo "$(OX)\statrep.obj" >> $@
	echo "$(OX)\style.obj" >> $@
	echo "$(OX)\sync.obj" >> $@
	echo "$(OX)\tag.obj" >> $@
	echo "$(OX)\tar.obj" >> $@
	echo "$(OX)\terminal.obj" >> $@
	echo "$(OX)\th.obj" >> $@
	echo "$(OX)\th_lang.obj" >> $@
	echo "$(OX)\th_main.obj" >> $@
	echo "$(OX)\th_tcl.obj" >> $@
	echo "$(OX)\timeline.obj" >> $@
	echo "$(OX)\tkt.obj" >> $@
	echo "$(OX)\tktsetup.obj" >> $@
	echo "$(OX)\undo.obj" >> $@
	echo "$(OX)\unicode.obj" >> $@
	echo "$(OX)\unversioned.obj" >> $@
	echo "$(OX)\update.obj" >> $@
	echo "$(OX)\url.obj" >> $@
	echo "$(OX)\user.obj" >> $@
	echo "$(OX)\utf8.obj" >> $@
	echo "$(OX)\util.obj" >> $@
	echo "$(OX)\verify.obj" >> $@
	echo "$(OX)\vfile.obj" >> $@
	echo "$(OX)\wiki.obj" >> $@
	echo "$(OX)\wikiformat.obj" >> $@
	echo "$(OX)\winfile.obj" >> $@
	echo "$(OX)\winhttp.obj" >> $@
	echo "$(OX)\xfer.obj" >> $@
	echo "$(OX)\xfersetup.obj" >> $@
	echo "$(OX)\zip.obj" >> $@
	echo $(LIBS) >> $@

"$(OBJDIR)\translate$E": "$(SRCDIR_tools)\translate.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\makeheaders$E": "$(SRCDIR_tools)\makeheaders.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\mkindex$E": "$(SRCDIR_tools)\mkindex.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\mkbuiltin$E": "$(SRCDIR_tools)\mkbuiltin.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\mkversion$E": "$(SRCDIR_tools)\mkversion.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

"$(OBJDIR)\codecheck1$E": "$(SRCDIR_tools)\codecheck1.c"
	$(BCC) /Fe$@ /Fo$(@D)\ /Fd$(@D)\ $**

!if $(USE_SEE)!=0
SEE_FLAGS = /DSQLITE_HAS_CODEC=1 /DSQLITE_SHELL_DBKEY_PROC=fossil_key
SQLITE3_SHELL_SRC = $(SRCDIR)\shell-see.c
SQLITE3_SRC = $(SRCDIR_extsrc)\sqlite3-see.c
!else
SEE_FLAGS =
SQLITE3_SHELL_SRC = $(SRCDIR_extsrc)\shell.c
SQLITE3_SRC = $(SRCDIR_extsrc)\sqlite3.c
!endif

"$(OX)\shell$O" : "$(SQLITE3_SHELL_SRC)" "$(B)\win\Makefile.msc"
	$(TCC) /Fo$@ /Fd$(@D)\ $(SHELL_OPTIONS) $(SQLITE_OPTIONS) $(SHELL_CFLAGS) $(SEE_FLAGS) -c "$(SQLITE3_SHELL_SRC)"

"$(OX)\sqlite3$O" : "$(SQLITE3_SRC)" "$(B)\win\Makefile.msc"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $(SQLITE_OPTIONS) $(SQLITE_CFLAGS) $(SEE_FLAGS) "$(SQLITE3_SRC)"

"$(OX)\th$O" : "$(SRCDIR)\th.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\th_lang$O" : "$(SRCDIR)\th_lang.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\th_tcl$O" : "$(SRCDIR)\th_tcl.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\pikchr$O" : "$(SRCDIR_extsrc)\pikchr.c"
	$(TCC) $(PIKCHR_OPTIONS) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\VERSION.h" : "$(OBJDIR)\mkversion$E" "$(B)\manifest.uuid" "$(B)\manifest" "$(B)\VERSION" "$(B)\phony.h"
	"$(OBJDIR)\mkversion$E" "$(B)\manifest.uuid" "$(B)\manifest" "$(B)\VERSION" > $@

"$(B)\phony.h" :
	rem Force rebuild of VERSION.h whenever nmake is run

"$(OX)\cson_amalgamation$O" : "$(SRCDIR_extsrc)\cson_amalgamation.c"
	$(TCC) /Fo$@ /Fd$(@D)\ -c $**

"$(OX)\page_index.h": "$(OBJDIR)\mkindex$E" $(SRC)
	$** > $@

"$(OX)\builtin_data.h":	"$(OBJDIR)\mkbuiltin$E" "$(OX)\builtin_data.reslist"
	"$(OBJDIR)\mkbuiltin$E" --prefix "$(SRCDIR)/" --reslist "$(OX)\builtin_data.reslist" > $@

cleanx:
	-del "$(OX)\*.obj" 2>NUL
	-del "$(OBJDIR)\*.obj" 2>NUL
	-del "$(OX)\*_.c" 2>NUL
	-del "$(OX)\*.h" 2>NUL
	-del "$(OX)\*.ilk" 2>NUL
	-del "$(OX)\*.map" 2>NUL
	-del "$(OX)\*.res" 2>NUL
	-del "$(OX)\*.reslist" 2>NUL
	-del "$(OX)\headers" 2>NUL
	-del "$(OX)\linkopts" 2>NUL
	-del "$(OX)\vc*.pdb" 2>NUL

clean: cleanx
	-del "$(APPNAME)" 2>NUL
	-del "$(PDBNAME)" 2>NUL
	-del "$(OBJDIR)\translate$E" 2>NUL
	-del "$(OBJDIR)\translate$P" 2>NUL
	-del "$(OBJDIR)\mkindex$E" 2>NUL
	-del "$(OBJDIR)\mkindex$P" 2>NUL
	-del "$(OBJDIR)\makeheaders$E" 2>NUL
	-del "$(OBJDIR)\makeheaders$P" 2>NUL
	-del "$(OBJDIR)\mkversion$E" 2>NUL
	-del "$(OBJDIR)\mkversion$P" 2>NUL
	-del "$(OBJDIR)\mkcss$E" 2>NUL
	-del "$(OBJDIR)\mkcss$P" 2>NUL
	-del "$(OBJDIR)\codecheck1$E" 2>NUL
	-del "$(OBJDIR)\codecheck1$P" 2>NUL
	-del "$(OBJDIR)\mkbuiltin$E" 2>NUL
	-del "$(OBJDIR)\mkbuiltin$P" 2>NUL

realclean: clean

"$(OBJDIR)\json$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_artifact$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_branch$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_config$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_diff$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_dir$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_finfo$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_login$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_query$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_report$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_status$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_tag$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_timeline$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_user$O" : "$(SRCDIR)\json_detail.h"
"$(OBJDIR)\json_wiki$O" : "$(SRCDIR)\json_detail.h"

"$(OX)\builtin_data.reslist": $(EXTRA_FILES) "$(B)\win\Makefile.msc"
	echo "$(SRCDIR)\../extsrc/pikchr-worker.js" > $@
	echo "$(SRCDIR)\../extsrc/pikchr.js" >> $@
	echo "$(SRCDIR)\../extsrc/pikchr.wasm" >> $@
	echo "$(SRCDIR)\../skins/ardoise/css.txt" >> $@
	echo "$(SRCDIR)\../skins/ardoise/details.txt" >> $@
	echo "$(SRCDIR)\../skins/ardoise/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/ardoise/header.txt" >> $@
	echo "$(SRCDIR)\../skins/black_and_white/css.txt" >> $@
	echo "$(SRCDIR)\../skins/black_and_white/details.txt" >> $@
	echo "$(SRCDIR)\../skins/black_and_white/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/black_and_white/header.txt" >> $@
	echo "$(SRCDIR)\../skins/blitz/css.txt" >> $@
	echo "$(SRCDIR)\../skins/blitz/details.txt" >> $@
	echo "$(SRCDIR)\../skins/blitz/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/blitz/header.txt" >> $@
	echo "$(SRCDIR)\../skins/blitz/ticket.txt" >> $@
	echo "$(SRCDIR)\../skins/darkmode/css.txt" >> $@
	echo "$(SRCDIR)\../skins/darkmode/details.txt" >> $@
	echo "$(SRCDIR)\../skins/darkmode/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/darkmode/header.txt" >> $@
	echo "$(SRCDIR)\../skins/default/css.txt" >> $@
	echo "$(SRCDIR)\../skins/default/details.txt" >> $@
	echo "$(SRCDIR)\../skins/default/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/default/header.txt" >> $@
	echo "$(SRCDIR)\../skins/eagle/css.txt" >> $@
	echo "$(SRCDIR)\../skins/eagle/details.txt" >> $@
	echo "$(SRCDIR)\../skins/eagle/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/eagle/header.txt" >> $@
	echo "$(SRCDIR)\../skins/etienne/css.txt" >> $@
	echo "$(SRCDIR)\../skins/etienne/details.txt" >> $@
	echo "$(SRCDIR)\../skins/etienne/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/etienne/header.txt" >> $@
	echo "$(SRCDIR)\../skins/khaki/css.txt" >> $@
	echo "$(SRCDIR)\../skins/khaki/details.txt" >> $@
	echo "$(SRCDIR)\../skins/khaki/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/khaki/header.txt" >> $@
	echo "$(SRCDIR)\../skins/original/css.txt" >> $@
	echo "$(SRCDIR)\../skins/original/details.txt" >> $@
	echo "$(SRCDIR)\../skins/original/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/original/header.txt" >> $@
	echo "$(SRCDIR)\../skins/plain_gray/css.txt" >> $@
	echo "$(SRCDIR)\../skins/plain_gray/details.txt" >> $@
	echo "$(SRCDIR)\../skins/plain_gray/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/plain_gray/header.txt" >> $@
	echo "$(SRCDIR)\../skins/xekri/css.txt" >> $@
	echo "$(SRCDIR)\../skins/xekri/details.txt" >> $@
	echo "$(SRCDIR)\../skins/xekri/footer.txt" >> $@
	echo "$(SRCDIR)\../skins/xekri/header.txt" >> $@
	echo "$(SRCDIR)\accordion.js" >> $@
	echo "$(SRCDIR)\alerts/bflat2.wav" >> $@
	echo "$(SRCDIR)\alerts/bflat3.wav" >> $@
	echo "$(SRCDIR)\alerts/bloop.wav" >> $@
	echo "$(SRCDIR)\alerts/plunk.wav" >> $@
	echo "$(SRCDIR)\ci_edit.js" >> $@
	echo "$(SRCDIR)\copybtn.js" >> $@
	echo "$(SRCDIR)\default.css" >> $@
	echo "$(SRCDIR)\diff.js" >> $@
	echo "$(SRCDIR)\diff.tcl" >> $@
	echo "$(SRCDIR)\forum.js" >> $@
	echo "$(SRCDIR)\fossil.bootstrap.js" >> $@
	echo "$(SRCDIR)\fossil.confirmer.js" >> $@
	echo "$(SRCDIR)\fossil.copybutton.js" >> $@
	echo "$(SRCDIR)\fossil.diff.js" >> $@
	echo "$(SRCDIR)\fossil.dom.js" >> $@
	echo "$(SRCDIR)\fossil.fetch.js" >> $@
	echo "$(SRCDIR)\fossil.numbered-lines.js" >> $@
	echo "$(SRCDIR)\fossil.page.brlist.js" >> $@
	echo "$(SRCDIR)\fossil.page.chat.js" >> $@
	echo "$(SRCDIR)\fossil.page.fileedit.js" >> $@
	echo "$(SRCDIR)\fossil.page.forumpost.js" >> $@
	echo "$(SRCDIR)\fossil.page.pikchrshow.js" >> $@
	echo "$(SRCDIR)\fossil.page.pikchrshowasm.js" >> $@
	echo "$(SRCDIR)\fossil.page.whistory.js" >> $@
	echo "$(SRCDIR)\fossil.page.wikiedit.js" >> $@
	echo "$(SRCDIR)\fossil.pikchr.js" >> $@
	echo "$(SRCDIR)\fossil.popupwidget.js" >> $@
	echo "$(SRCDIR)\fossil.storage.js" >> $@
	echo "$(SRCDIR)\fossil.tabs.js" >> $@
	echo "$(SRCDIR)\fossil.wikiedit-wysiwyg.js" >> $@
	echo "$(SRCDIR)\graph.js" >> $@
	echo "$(SRCDIR)\hbmenu.js" >> $@
	echo "$(SRCDIR)\href.js" >> $@
	echo "$(SRCDIR)\login.js" >> $@
	echo "$(SRCDIR)\markdown.md" >> $@
	echo "$(SRCDIR)\menu.js" >> $@
	echo "$(SRCDIR)\scroll.js" >> $@
	echo "$(SRCDIR)\skin.js" >> $@
	echo "$(SRCDIR)\sorttable.js" >> $@
	echo "$(SRCDIR)\sounds/0.wav" >> $@
	echo "$(SRCDIR)\sounds/1.wav" >> $@
	echo "$(SRCDIR)\sounds/2.wav" >> $@
	echo "$(SRCDIR)\sounds/3.wav" >> $@
	echo "$(SRCDIR)\sounds/4.wav" >> $@
	echo "$(SRCDIR)\sounds/5.wav" >> $@
	echo "$(SRCDIR)\sounds/6.wav" >> $@
	echo "$(SRCDIR)\sounds/7.wav" >> $@
	echo "$(SRCDIR)\sounds/8.wav" >> $@
	echo "$(SRCDIR)\sounds/9.wav" >> $@
	echo "$(SRCDIR)\sounds/a.wav" >> $@
	echo "$(SRCDIR)\sounds/b.wav" >> $@
	echo "$(SRCDIR)\sounds/c.wav" >> $@
	echo "$(SRCDIR)\sounds/d.wav" >> $@
	echo "$(SRCDIR)\sounds/e.wav" >> $@
	echo "$(SRCDIR)\sounds/f.wav" >> $@
	echo "$(SRCDIR)\style.admin_log.css" >> $@
	echo "$(SRCDIR)\style.chat.css" >> $@
	echo "$(SRCDIR)\style.fileedit.css" >> $@
	echo "$(SRCDIR)\style.pikchrshow.css" >> $@
	echo "$(SRCDIR)\style.uvlist.css" >> $@
	echo "$(SRCDIR)\style.wikiedit.css" >> $@
	echo "$(SRCDIR)\tree.js" >> $@
	echo "$(SRCDIR)\useredit.js" >> $@
	echo "$(SRCDIR)\wiki.wiki" >> $@

"$(OX)\add$O" : "$(OX)\add_.c" "$(OX)\add.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\add_.c"

"$(OX)\add_.c" : "$(SRCDIR)\add.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\ajax$O" : "$(OX)\ajax_.c" "$(OX)\ajax.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\ajax_.c"

"$(OX)\ajax_.c" : "$(SRCDIR)\ajax.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\alerts$O" : "$(OX)\alerts_.c" "$(OX)\alerts.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\alerts_.c"

"$(OX)\alerts_.c" : "$(SRCDIR)\alerts.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\allrepo$O" : "$(OX)\allrepo_.c" "$(OX)\allrepo.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\allrepo_.c"

"$(OX)\allrepo_.c" : "$(SRCDIR)\allrepo.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\attach$O" : "$(OX)\attach_.c" "$(OX)\attach.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\attach_.c"

"$(OX)\attach_.c" : "$(SRCDIR)\attach.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\backlink$O" : "$(OX)\backlink_.c" "$(OX)\backlink.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\backlink_.c"

"$(OX)\backlink_.c" : "$(SRCDIR)\backlink.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\backoffice$O" : "$(OX)\backoffice_.c" "$(OX)\backoffice.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\backoffice_.c"

"$(OX)\backoffice_.c" : "$(SRCDIR)\backoffice.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\bag$O" : "$(OX)\bag_.c" "$(OX)\bag.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\bag_.c"

"$(OX)\bag_.c" : "$(SRCDIR)\bag.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\bisect$O" : "$(OX)\bisect_.c" "$(OX)\bisect.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\bisect_.c"

"$(OX)\bisect_.c" : "$(SRCDIR)\bisect.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\blob$O" : "$(OX)\blob_.c" "$(OX)\blob.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\blob_.c"

"$(OX)\blob_.c" : "$(SRCDIR)\blob.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\branch$O" : "$(OX)\branch_.c" "$(OX)\branch.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\branch_.c"

"$(OX)\branch_.c" : "$(SRCDIR)\branch.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\browse$O" : "$(OX)\browse_.c" "$(OX)\browse.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\browse_.c"

"$(OX)\browse_.c" : "$(SRCDIR)\browse.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\builtin$O" : "$(OX)\builtin_.c" "$(OX)\builtin.h" "$(OX)\builtin_data.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\builtin_.c"

"$(OX)\builtin_.c" : "$(SRCDIR)\builtin.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\bundle$O" : "$(OX)\bundle_.c" "$(OX)\bundle.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\bundle_.c"

"$(OX)\bundle_.c" : "$(SRCDIR)\bundle.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\cache$O" : "$(OX)\cache_.c" "$(OX)\cache.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\cache_.c"

"$(OX)\cache_.c" : "$(SRCDIR)\cache.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\capabilities$O" : "$(OX)\capabilities_.c" "$(OX)\capabilities.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\capabilities_.c"

"$(OX)\capabilities_.c" : "$(SRCDIR)\capabilities.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\captcha$O" : "$(OX)\captcha_.c" "$(OX)\captcha.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\captcha_.c"

"$(OX)\captcha_.c" : "$(SRCDIR)\captcha.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\cgi$O" : "$(OX)\cgi_.c" "$(OX)\cgi.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\cgi_.c"

"$(OX)\cgi_.c" : "$(SRCDIR)\cgi.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\chat$O" : "$(OX)\chat_.c" "$(OX)\chat.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\chat_.c"

"$(OX)\chat_.c" : "$(SRCDIR)\chat.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\checkin$O" : "$(OX)\checkin_.c" "$(OX)\checkin.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\checkin_.c"

"$(OX)\checkin_.c" : "$(SRCDIR)\checkin.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\checkout$O" : "$(OX)\checkout_.c" "$(OX)\checkout.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\checkout_.c"

"$(OX)\checkout_.c" : "$(SRCDIR)\checkout.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\clearsign$O" : "$(OX)\clearsign_.c" "$(OX)\clearsign.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\clearsign_.c"

"$(OX)\clearsign_.c" : "$(SRCDIR)\clearsign.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\clone$O" : "$(OX)\clone_.c" "$(OX)\clone.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\clone_.c"

"$(OX)\clone_.c" : "$(SRCDIR)\clone.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\color$O" : "$(OX)\color_.c" "$(OX)\color.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\color_.c"

"$(OX)\color_.c" : "$(SRCDIR)\color.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\comformat$O" : "$(OX)\comformat_.c" "$(OX)\comformat.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\comformat_.c"

"$(OX)\comformat_.c" : "$(SRCDIR)\comformat.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\configure$O" : "$(OX)\configure_.c" "$(OX)\configure.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\configure_.c"

"$(OX)\configure_.c" : "$(SRCDIR)\configure.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\content$O" : "$(OX)\content_.c" "$(OX)\content.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\content_.c"

"$(OX)\content_.c" : "$(SRCDIR)\content.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\cookies$O" : "$(OX)\cookies_.c" "$(OX)\cookies.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\cookies_.c"

"$(OX)\cookies_.c" : "$(SRCDIR)\cookies.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\db$O" : "$(OX)\db_.c" "$(OX)\db.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\db_.c"

"$(OX)\db_.c" : "$(SRCDIR)\db.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\delta$O" : "$(OX)\delta_.c" "$(OX)\delta.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\delta_.c"

"$(OX)\delta_.c" : "$(SRCDIR)\delta.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\deltacmd$O" : "$(OX)\deltacmd_.c" "$(OX)\deltacmd.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\deltacmd_.c"

"$(OX)\deltacmd_.c" : "$(SRCDIR)\deltacmd.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\deltafunc$O" : "$(OX)\deltafunc_.c" "$(OX)\deltafunc.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\deltafunc_.c"

"$(OX)\deltafunc_.c" : "$(SRCDIR)\deltafunc.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\descendants$O" : "$(OX)\descendants_.c" "$(OX)\descendants.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\descendants_.c"

"$(OX)\descendants_.c" : "$(SRCDIR)\descendants.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\diff$O" : "$(OX)\diff_.c" "$(OX)\diff.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\diff_.c"

"$(OX)\diff_.c" : "$(SRCDIR)\diff.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\diffcmd$O" : "$(OX)\diffcmd_.c" "$(OX)\diffcmd.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\diffcmd_.c"

"$(OX)\diffcmd_.c" : "$(SRCDIR)\diffcmd.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\dispatch$O" : "$(OX)\dispatch_.c" "$(OX)\dispatch.h" "$(OX)\page_index.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\dispatch_.c"

"$(OX)\dispatch_.c" : "$(SRCDIR)\dispatch.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\doc$O" : "$(OX)\doc_.c" "$(OX)\doc.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\doc_.c"

"$(OX)\doc_.c" : "$(SRCDIR)\doc.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\encode$O" : "$(OX)\encode_.c" "$(OX)\encode.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\encode_.c"

"$(OX)\encode_.c" : "$(SRCDIR)\encode.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\etag$O" : "$(OX)\etag_.c" "$(OX)\etag.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\etag_.c"

"$(OX)\etag_.c" : "$(SRCDIR)\etag.c"
	"$(OBJDIR)\translate$E" $** > $@

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"$(OX)\loadctrl$O" : "$(OX)\loadctrl_.c" "$(OX)\loadctrl.h"
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"$(OX)\markdown$O" : "$(OX)\markdown_.c" "$(OX)\markdown.h"
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"$(OX)\md5$O" : "$(OX)\md5_.c" "$(OX)\md5.h"
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"$(OX)\name$O" : "$(OX)\name_.c" "$(OX)\name.h"
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"$(OX)\piechart$O" : "$(OX)\piechart_.c" "$(OX)\piechart.h"
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"$(OX)\pivot$O" : "$(OX)\pivot_.c" "$(OX)\pivot.h"
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"$(OX)\popen$O" : "$(OX)\popen_.c" "$(OX)\popen.h"
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"$(OX)\terminal_.c" : "$(SRCDIR)\terminal.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\th_main$O" : "$(OX)\th_main_.c" "$(OX)\th_main.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\th_main_.c"

"$(OX)\th_main_.c" : "$(SRCDIR)\th_main.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\timeline$O" : "$(OX)\timeline_.c" "$(OX)\timeline.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\timeline_.c"

"$(OX)\timeline_.c" : "$(SRCDIR)\timeline.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\tkt$O" : "$(OX)\tkt_.c" "$(OX)\tkt.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\tkt_.c"

"$(OX)\tkt_.c" : "$(SRCDIR)\tkt.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\tktsetup$O" : "$(OX)\tktsetup_.c" "$(OX)\tktsetup.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\tktsetup_.c"

"$(OX)\tktsetup_.c" : "$(SRCDIR)\tktsetup.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\undo$O" : "$(OX)\undo_.c" "$(OX)\undo.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\undo_.c"

"$(OX)\undo_.c" : "$(SRCDIR)\undo.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\unicode$O" : "$(OX)\unicode_.c" "$(OX)\unicode.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\unicode_.c"

"$(OX)\unicode_.c" : "$(SRCDIR)\unicode.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\unversioned$O" : "$(OX)\unversioned_.c" "$(OX)\unversioned.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\unversioned_.c"

"$(OX)\unversioned_.c" : "$(SRCDIR)\unversioned.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\update$O" : "$(OX)\update_.c" "$(OX)\update.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\update_.c"

"$(OX)\update_.c" : "$(SRCDIR)\update.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\url$O" : "$(OX)\url_.c" "$(OX)\url.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\url_.c"

"$(OX)\url_.c" : "$(SRCDIR)\url.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\user$O" : "$(OX)\user_.c" "$(OX)\user.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\user_.c"

"$(OX)\user_.c" : "$(SRCDIR)\user.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\utf8$O" : "$(OX)\utf8_.c" "$(OX)\utf8.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\utf8_.c"

"$(OX)\utf8_.c" : "$(SRCDIR)\utf8.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\util$O" : "$(OX)\util_.c" "$(OX)\util.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\util_.c"

"$(OX)\util_.c" : "$(SRCDIR)\util.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\verify$O" : "$(OX)\verify_.c" "$(OX)\verify.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\verify_.c"

"$(OX)\verify_.c" : "$(SRCDIR)\verify.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\vfile$O" : "$(OX)\vfile_.c" "$(OX)\vfile.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\vfile_.c"

"$(OX)\vfile_.c" : "$(SRCDIR)\vfile.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\wiki$O" : "$(OX)\wiki_.c" "$(OX)\wiki.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\wiki_.c"

"$(OX)\wiki_.c" : "$(SRCDIR)\wiki.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\wikiformat$O" : "$(OX)\wikiformat_.c" "$(OX)\wikiformat.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\wikiformat_.c"

"$(OX)\wikiformat_.c" : "$(SRCDIR)\wikiformat.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\winfile$O" : "$(OX)\winfile_.c" "$(OX)\winfile.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\winfile_.c"

"$(OX)\winfile_.c" : "$(SRCDIR)\winfile.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\winhttp$O" : "$(OX)\winhttp_.c" "$(OX)\winhttp.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\winhttp_.c"

"$(OX)\winhttp_.c" : "$(SRCDIR)\winhttp.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\xfer$O" : "$(OX)\xfer_.c" "$(OX)\xfer.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\xfer_.c"

"$(OX)\xfer_.c" : "$(SRCDIR)\xfer.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\xfersetup$O" : "$(OX)\xfersetup_.c" "$(OX)\xfersetup.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\xfersetup_.c"

"$(OX)\xfersetup_.c" : "$(SRCDIR)\xfersetup.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\zip$O" : "$(OX)\zip_.c" "$(OX)\zip.h"
	$(TCC) /Fo$@ /Fd$(@D)\ -c "$(OX)\zip_.c"

"$(OX)\zip_.c" : "$(SRCDIR)\zip.c"
	"$(OBJDIR)\translate$E" $** > $@

"$(OX)\fossil.res" : "$(B)\win\fossil.rc"
	$(RCC) /fo $@ $**

"$(OX)\headers": "$(OBJDIR)\makeheaders$E" "$(OX)\page_index.h" "$(OX)\builtin_data.h" "$(OX)\VERSION.h"
	"$(OBJDIR)\makeheaders$E" "$(OX)\add_.c":"$(OX)\add.h" \
			"$(OX)\ajax_.c":"$(OX)\ajax.h" \
			"$(OX)\alerts_.c":"$(OX)\alerts.h" \
			"$(OX)\allrepo_.c":"$(OX)\allrepo.h" \
			"$(OX)\attach_.c":"$(OX)\attach.h" \
			"$(OX)\backlink_.c":"$(OX)\backlink.h" \
			"$(OX)\backoffice_.c":"$(OX)\backoffice.h" \
			"$(OX)\bag_.c":"$(OX)\bag.h" \
			"$(OX)\bisect_.c":"$(OX)\bisect.h" \
			"$(OX)\blob_.c":"$(OX)\blob.h" \
			"$(OX)\branch_.c":"$(OX)\branch.h" \
			"$(OX)\browse_.c":"$(OX)\browse.h" \
			"$(OX)\builtin_.c":"$(OX)\builtin.h" \
			"$(OX)\bundle_.c":"$(OX)\bundle.h" \
			"$(OX)\cache_.c":"$(OX)\cache.h" \
			"$(OX)\capabilities_.c":"$(OX)\capabilities.h" \
			"$(OX)\captcha_.c":"$(OX)\captcha.h" \
			"$(OX)\cgi_.c":"$(OX)\cgi.h" \
			"$(OX)\chat_.c":"$(OX)\chat.h" \
			"$(OX)\checkin_.c":"$(OX)\checkin.h" \
			"$(OX)\checkout_.c":"$(OX)\checkout.h" \
			"$(OX)\clearsign_.c":"$(OX)\clearsign.h" \
			"$(OX)\clone_.c":"$(OX)\clone.h" \
			"$(OX)\color_.c":"$(OX)\color.h" \
			"$(OX)\comformat_.c":"$(OX)\comformat.h" \
			"$(OX)\configure_.c":"$(OX)\configure.h" \
			"$(OX)\content_.c":"$(OX)\content.h" \
			"$(OX)\cookies_.c":"$(OX)\cookies.h" \
			"$(OX)\db_.c":"$(OX)\db.h" \
			"$(OX)\delta_.c":"$(OX)\delta.h" \
			"$(OX)\deltacmd_.c":"$(OX)\deltacmd.h" \
			"$(OX)\deltafunc_.c":"$(OX)\deltafunc.h" \
			"$(OX)\descendants_.c":"$(OX)\descendants.h" \
			"$(OX)\diff_.c":"$(OX)\diff.h" \
			"$(OX)\diffcmd_.c":"$(OX)\diffcmd.h" \
			"$(OX)\dispatch_.c":"$(OX)\dispatch.h" \
			"$(OX)\doc_.c":"$(OX)\doc.h" \
			"$(OX)\encode_.c":"$(OX)\encode.h" \
			"$(OX)\etag_.c":"$(OX)\etag.h" \
			"$(OX)\event_.c":"$(OX)\event.h" \
			"$(OX)\export_.c":"$(OX)\export.h" \
			"$(OX)\extcgi_.c":"$(OX)\extcgi.h" \
			"$(OX)\file_.c":"$(OX)\file.h" \
			"$(OX)\fileedit_.c":"$(OX)\fileedit.h" \
			"$(OX)\finfo_.c":"$(OX)\finfo.h" \
			"$(OX)\foci_.c":"$(OX)\foci.h" \
			"$(OX)\forum_.c":"$(OX)\forum.h" \
			"$(OX)\fshell_.c":"$(OX)\fshell.h" \
			"$(OX)\fusefs_.c":"$(OX)\fusefs.h" \
			"$(OX)\fuzz_.c":"$(OX)\fuzz.h" \
			"$(OX)\glob_.c":"$(OX)\glob.h" \
			"$(OX)\graph_.c":"$(OX)\graph.h" \
			"$(OX)\gzip_.c":"$(OX)\gzip.h" \
			"$(OX)\hname_.c":"$(OX)\hname.h" \
			"$(OX)\hook_.c":"$(OX)\hook.h" \
			"$(OX)\http_.c":"$(OX)\http.h" \
			"$(OX)\http_socket_.c":"$(OX)\http_socket.h" \
			"$(OX)\http_ssl_.c":"$(OX)\http_ssl.h" \
			"$(OX)\http_transport_.c":"$(OX)\http_transport.h" \
			"$(OX)\import_.c":"$(OX)\import.h" \
			"$(OX)\info_.c":"$(OX)\info.h" \
			"$(OX)\interwiki_.c":"$(OX)\interwiki.h" \
			"$(OX)\json_.c":"$(OX)\json.h" \
			"$(OX)\json_artifact_.c":"$(OX)\json_artifact.h" \
			"$(OX)\json_branch_.c":"$(OX)\json_branch.h" \
			"$(OX)\json_config_.c":"$(OX)\json_config.h" \
			"$(OX)\json_diff_.c":"$(OX)\json_diff.h" \
			"$(OX)\json_dir_.c":"$(OX)\json_dir.h" \
			"$(OX)\json_finfo_.c":"$(OX)\json_finfo.h" \
			"$(OX)\json_login_.c":"$(OX)\json_login.h" \
			"$(OX)\json_query_.c":"$(OX)\json_query.h" \
			"$(OX)\json_report_.c":"$(OX)\json_report.h" \
			"$(OX)\json_status_.c":"$(OX)\json_status.h" \
			"$(OX)\json_tag_.c":"$(OX)\json_tag.h" \
			"$(OX)\json_timeline_.c":"$(OX)\json_timeline.h" \
			"$(OX)\json_user_.c":"$(OX)\json_user.h" \
			"$(OX)\json_wiki_.c":"$(OX)\json_wiki.h" \
			"$(OX)\leaf_.c":"$(OX)\leaf.h" \
			"$(OX)\loadctrl_.c":"$(OX)\loadctrl.h" \
			"$(OX)\login_.c":"$(OX)\login.h" \
			"$(OX)\lookslike_.c":"$(OX)\lookslike.h" \
			"$(OX)\main_.c":"$(OX)\main.h" \
			"$(OX)\manifest_.c":"$(OX)\manifest.h" \
			"$(OX)\markdown_.c":"$(OX)\markdown.h" \
			"$(OX)\markdown_html_.c":"$(OX)\markdown_html.h" \
			"$(OX)\md5_.c":"$(OX)\md5.h" \
			"$(OX)\merge_.c":"$(OX)\merge.h" \
			"$(OX)\merge3_.c":"$(OX)\merge3.h" \
			"$(OX)\moderate_.c":"$(OX)\moderate.h" \
			"$(OX)\name_.c":"$(OX)\name.h" \
			"$(OX)\patch_.c":"$(OX)\patch.h" \
			"$(OX)\path_.c":"$(OX)\path.h" \
			"$(OX)\piechart_.c":"$(OX)\piechart.h" \
			"$(OX)\pikchrshow_.c":"$(OX)\pikchrshow.h" \
			"$(OX)\pivot_.c":"$(OX)\pivot.h" \
			"$(OX)\popen_.c":"$(OX)\popen.h" \
			"$(OX)\pqueue_.c":"$(OX)\pqueue.h" \
			"$(OX)\printf_.c":"$(OX)\printf.h" \
			"$(OX)\publish_.c":"$(OX)\publish.h" \
			"$(OX)\purge_.c":"$(OX)\purge.h" \
			"$(OX)\rebuild_.c":"$(OX)\rebuild.h" \
			"$(OX)\regexp_.c":"$(OX)\regexp.h" \
			"$(OX)\repolist_.c":"$(OX)\repolist.h" \
			"$(OX)\report_.c":"$(OX)\report.h" \
			"$(OX)\rss_.c":"$(OX)\rss.h" \
			"$(OX)\schema_.c":"$(OX)\schema.h" \
			"$(OX)\search_.c":"$(OX)\search.h" \
			"$(OX)\security_audit_.c":"$(OX)\security_audit.h" \
			"$(OX)\setup_.c":"$(OX)\setup.h" \
			"$(OX)\setupuser_.c":"$(OX)\setupuser.h" \
			"$(OX)\sha1_.c":"$(OX)\sha1.h" \
			"$(OX)\sha1hard_.c":"$(OX)\sha1hard.h" \
			"$(OX)\sha3_.c":"$(OX)\sha3.h" \
			"$(OX)\shun_.c":"$(OX)\shun.h" \
			"$(OX)\sitemap_.c":"$(OX)\sitemap.h" \
			"$(OX)\skins_.c":"$(OX)\skins.h" \
			"$(OX)\smtp_.c":"$(OX)\smtp.h" \
			"$(OX)\sqlcmd_.c":"$(OX)\sqlcmd.h" \
			"$(OX)\stash_.c":"$(OX)\stash.h" \
			"$(OX)\stat_.c":"$(OX)\stat.h" \
			"$(OX)\statrep_.c":"$(OX)\statrep.h" \
			"$(OX)\style_.c":"$(OX)\style.h" \
			"$(OX)\sync_.c":"$(OX)\sync.h" \
			"$(OX)\tag_.c":"$(OX)\tag.h" \
			"$(OX)\tar_.c":"$(OX)\tar.h" \
			"$(OX)\terminal_.c":"$(OX)\terminal.h" \
			"$(OX)\th_main_.c":"$(OX)\th_main.h" \
			"$(OX)\timeline_.c":"$(OX)\timeline.h" \
			"$(OX)\tkt_.c":"$(OX)\tkt.h" \
			"$(OX)\tktsetup_.c":"$(OX)\tktsetup.h" \
			"$(OX)\undo_.c":"$(OX)\undo.h" \
			"$(OX)\unicode_.c":"$(OX)\unicode.h" \
			"$(OX)\unversioned_.c":"$(OX)\unversioned.h" \
			"$(OX)\update_.c":"$(OX)\update.h" \
			"$(OX)\url_.c":"$(OX)\url.h" \
			"$(OX)\user_.c":"$(OX)\user.h" \
			"$(OX)\utf8_.c":"$(OX)\utf8.h" \
			"$(OX)\util_.c":"$(OX)\util.h" \
			"$(OX)\verify_.c":"$(OX)\verify.h" \
			"$(OX)\vfile_.c":"$(OX)\vfile.h" \
			"$(OX)\wiki_.c":"$(OX)\wiki.h" \
			"$(OX)\wikiformat_.c":"$(OX)\wikiformat.h" \
			"$(OX)\winfile_.c":"$(OX)\winfile.h" \
			"$(OX)\winhttp_.c":"$(OX)\winhttp.h" \
			"$(OX)\xfer_.c":"$(OX)\xfer.h" \
			"$(OX)\xfersetup_.c":"$(OX)\xfersetup.h" \
			"$(OX)\zip_.c":"$(OX)\zip.h" \
			"$(SRCDIR_extsrc)\pikchr.c":"$(OX)\pikchr.h" \
			"$(SRCDIR_extsrc)\sqlite3.h" \
			"$(SRCDIR)\th.h" \
			"$(OX)\VERSION.h" \
			"$(SRCDIR_extsrc)\cson_amalgamation.h"
	@copy /Y nul: $@
Added win/buildmsvc.bat.





























































































































































































































































































































































































































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@ECHO OFF

::
:: buildmsvc.bat --
::
:: This batch file attempts to build Fossil using the latest version of
:: Microsoft Visual Studio installed on this machine.
::
:: For VS 2017 and later, it uses the x64 build tools by default;
:: pass "x86" as the first argument to use the x86 tools.
::

SETLOCAL

REM SET __ECHO=ECHO
REM SET __ECHO2=ECHO
IF NOT DEFINED _AECHO (SET _AECHO=REM)
IF NOT DEFINED _CECHO (SET _CECHO=REM)
IF NOT DEFINED _VECHO (SET _VECHO=REM)

REM
REM NOTE: Setup local environment variables that point to the root directory
REM       of the Fossil source checkout and to the directory containing this
REM       build tool.
REM
SET ROOT=%~dp0\..
SET ROOT=%ROOT:\\=\%

%_VECHO% Root = '%ROOT%'

SET TOOLS=%~dp0
SET TOOLS=%TOOLS:~0,-1%

%_VECHO% Tools = '%TOOLS%'

REM
REM Visual C++ ????
REM
IF DEFINED VCINSTALLDIR IF EXIST "%VCINSTALLDIR%" (
  %_AECHO% Build environment appears to be set up.
  GOTO skip_setupVisualStudio
)

REM
REM Visual Studio ????
REM
IF DEFINED VSVARS32 IF EXIST "%VSVARS32%" (
  %_AECHO% Build environment batch file manually overridden to "%VSVARS32%"...
  GOTO skip_detectVisualStudio
)

REM
REM Visual Studio 2017 / 2019 / 2022
REM
CALL :fn_TryUseVsWhereExe
IF NOT DEFINED VSWHEREINSTALLDIR GOTO skip_detectVisualStudio2017
SET VSVARS32=%VSWHEREINSTALLDIR%\VC\Auxiliary\Build\vcvars64.bat
IF "%~1" == "x86" (
  SET VSVARS32=%VSWHEREINSTALLDIR%\VC\Auxiliary\Build\vcvars32.bat
)
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2017 / 2019 / 2022...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2017

REM
REM Visual Studio 2015
REM
IF NOT DEFINED VS140COMNTOOLS GOTO skip_detectVisualStudio2015
SET VSVARS32=%VS140COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2015...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2015

REM
REM Visual Studio 2013
REM
IF NOT DEFINED VS120COMNTOOLS GOTO skip_detectVisualStudio2013
SET VSVARS32=%VS120COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2013...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2013

REM
REM Visual Studio 2012
REM
IF NOT DEFINED VS110COMNTOOLS GOTO skip_detectVisualStudio2012
SET VSVARS32=%VS110COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2012...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2012

REM
REM Visual Studio 2010
REM
IF NOT DEFINED VS100COMNTOOLS GOTO skip_detectVisualStudio2010
SET VSVARS32=%VS100COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2010...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2010

REM
REM Visual Studio 2008
REM
IF NOT DEFINED VS90COMNTOOLS GOTO skip_detectVisualStudio2008
SET VSVARS32=%VS90COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2008...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2008

REM
REM Visual Studio 2005
REM
IF NOT DEFINED VS80COMNTOOLS GOTO skip_detectVisualStudio2005
SET VSVARS32=%VS80COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2005...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2005

REM
REM Visual Studio 2003
REM
IF NOT DEFINED VS71COMNTOOLS GOTO skip_detectVisualStudio2003
SET VSVARS32=%VS71COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2003...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2003

REM
REM Visual Studio 2002
REM
IF NOT DEFINED VS70COMNTOOLS GOTO skip_detectVisualStudio2002
SET VSVARS32=%VS70COMNTOOLS%\vsvars32.bat
IF EXIST "%VSVARS32%" (
  %_AECHO% Using Visual Studio 2002...
  GOTO skip_detectVisualStudio
)
:skip_detectVisualStudio2002

REM
REM NOTE: If we get to this point, no Visual Studio build environment batch
REM       files were found.
REM
ECHO No Visual Studio build environment batch files were found.
GOTO errors

REM
REM NOTE: At this point, the appropriate Visual Studio version should be
REM       selected.
REM
:skip_detectVisualStudio

REM
REM NOTE: Remove any double-backslash sequences that may be present in the
REM       selected Visual Studio common tools path.  This is not strictly
REM       necessary; however, it makes reading the output easier.
REM
SET VSVARS32=%VSVARS32:\\=\%

%_VECHO% VsVars32 = '%VSVARS32%'

REM
REM NOTE: After this point, a clean ERRORLEVEL is required; therefore, make
REM       sure it is reset now.
REM
CALL :fn_ResetErrorLevel

REM
REM NOTE: Attempt to call the selected batch file to setup the environment
REM       variables for building with MSVC.
REM
%__ECHO3% CALL "%VSVARS32%"

IF ERRORLEVEL 1 (
  ECHO Visual Studio build environment batch file "%VSVARS32%" failed.
  GOTO errors
)

REM
REM NOTE: After this point, the environment should already be setup for
REM       building with MSVC.
REM
:skip_setupVisualStudio

%_VECHO% VcInstallDir = '%VCINSTALLDIR%'

REM
REM NOTE: Attempt to create the build output directory, if necessary.
REM       In order to build using the current directory as the build
REM       output directory, use the following command before executing
REM       this tool:
REM
REM       SET BUILDDIR=%CD%
REM
IF DEFINED BUILDDIR (
  IF DEFINED BUILDSUFFIX (
    CALL :fn_FindVarInVar BUILDSUFFIX BUILDDIR

    IF ERRORLEVEL 1 (
      REM
      REM NOTE: The build suffix is already present, do nothing.
      REM
    ) ELSE (
      REM
      REM NOTE: The build suffix is not present, add it now.
      REM
      SET BUILDDIR=%BUILDDIR%%BUILDSUFFIX%
    )

    CALL :fn_ResetErrorLevel
  )
) ELSE (
  REM
  REM NOTE: By default, when BUILDDIR is unset, build in the "msvcbld"
  REM       sub-directory relative to the root of the source checkout.
  REM       This retains backward compatibility with third-party build
  REM       scripts, etc,
  REM
  SET BUILDDIR=%ROOT%\msvcbld%BUILDSUFFIX%
)

%_VECHO% BuildSuffix = '%BUILDSUFFIX%'
%_VECHO% BuildDir = '%BUILDDIR%'

IF NOT EXIST "%BUILDDIR%" (
  %__ECHO% MKDIR "%BUILDDIR%"

  IF ERRORLEVEL 1 (
    ECHO Could not make directory "%BUILDDIR%".
    GOTO errors
  )
)

REM
REM NOTE: Attempt to change to the created build output directory so that
REM       the generated files will be placed there, if needed.
REM
%__ECHO2% PUSHD "%BUILDDIR%"

IF ERRORLEVEL 1 (
  ECHO Could not change to directory "%BUILDDIR%".
  GOTO errors
)

SET NEED_POPD=1

REM
REM NOTE: If requested, setup the build environment to refer to the Windows
REM       SDK v7.1A, which is required if the binaries are being built with
REM       Visual Studio 201x and need to work on Windows XP.
REM
IF DEFINED USE_V110SDK71A (
  %_AECHO% Forcing use of the Windows SDK v7.1A...
  CALL :fn_UseV110Sdk71A
)

%_VECHO% Path = '%PATH%'
%_VECHO% Include = '%INCLUDE%'
%_VECHO% Lib = '%LIB%'
%_VECHO% Tools = '%TOOLS%'
%_VECHO% Root = '%ROOT%'
%_VECHO% NmakeArgs = '%NMAKE_ARGS%'

REM
REM NOTE: Attempt to execute NMAKE for the Fossil MSVC makefile, passing
REM       anything extra from our command line along (e.g. extra options).
REM       Also, pass the base directory of the Fossil source tree as this
REM       allows an out-of-source-tree build.
REM
%__ECHO% nmake /f "%TOOLS%\Makefile.msc" B="%ROOT%" %NMAKE_ARGS% %*

IF ERRORLEVEL 1 (
  GOTO errors
)

REM
REM NOTE: Attempt to restore the previously saved directory, if needed.
REM
IF DEFINED NEED_POPD (
  %__ECHO2% POPD

  IF ERRORLEVEL 1 (
    ECHO Could not restore directory.
    GOTO errors
  )

  CALL :fn_UnsetVariable NEED_POPD
)

GOTO no_errors

:fn_UseV110Sdk71A
  IF "%PROCESSOR_ARCHITECTURE%" == "x86" GOTO set_v110Sdk71A_x86
  SET PFILES_SDK71A=%ProgramFiles(x86)%
  GOTO set_v110Sdk71A_done
  :set_v110Sdk71A_x86
  SET PFILES_SDK71A=%ProgramFiles%
  :set_v110Sdk71A_done
  SET PATH=%PFILES_SDK71A%\Microsoft SDKs\Windows\7.1A\Bin;%PATH%
  SET INCLUDE=%PFILES_SDK71A%\Microsoft SDKs\Windows\7.1A\Include;%INCLUDE%
  IF "%PLATFORM%" == "x64" GOTO set_v110Sdk71A_lib_x64
  SET LIB=%PFILES_SDK71A%\Microsoft SDKs\Windows\7.1A\Lib;%LIB%
  GOTO set_v110Sdk71A_lib_done
  :set_v110Sdk71A_lib_x64
  SET LIB=%PFILES_SDK71A%\Microsoft SDKs\Windows\7.1A\Lib\x64;%LIB%
  :set_v110Sdk71A_lib_done
  CALL :fn_UnsetVariable PFILES_SDK71A
  SET NMAKE_ARGS=%NMAKE_ARGS% FOSSIL_ENABLE_WINXP=1
  GOTO :EOF

:fn_FindVarInVar
  IF NOT DEFINED %1 GOTO :EOF
  IF NOT DEFINED %2 GOTO :EOF
  SETLOCAL
  CALL :fn_UnsetVariable VALUE
  SET __ECHO_CMD=ECHO %%%2%% ^^^| FIND /I "%%%1%%"
  FOR /F "delims=" %%V IN ('%__ECHO_CMD%') DO (
    SET VALUE=%%V
  )
  IF DEFINED VALUE (
    CALL :fn_SetErrorLevel
  ) ELSE (
    CALL :fn_ResetErrorLevel
  )
  ENDLOCAL
  GOTO :EOF

:fn_UnsetVariable
  SETLOCAL
  SET VALUE=%1
  IF DEFINED VALUE (
    SET VALUE=
    ENDLOCAL
    SET %VALUE%=
  ) ELSE (
    ENDLOCAL
  )
  CALL :fn_ResetErrorLevel
  GOTO :EOF

:fn_ResetErrorLevel
  VERIFY > NUL
  GOTO :EOF

:fn_SetErrorLevel
  VERIFY MAYBE 2> NUL
  GOTO :EOF

:fn_TryUseVsWhereExe
  IF DEFINED VSWHERE_EXE GOTO skip_setVsWhereExe
  SET VSWHERE_EXE=%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe
  IF NOT EXIST "%VSWHERE_EXE%" SET VSWHERE_EXE=%ProgramFiles%\Microsoft Visual Studio\Installer\vswhere.exe
  :skip_setVsWhereExe
  IF NOT EXIST "%VSWHERE_EXE%" (
    %_AECHO% The "VsWhere" tool does not appear to be installed.
    GOTO :EOF
  )
  SET VS_WHEREIS_CMD="%VSWHERE_EXE%" -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath -latest
  IF DEFINED __ECHO (
    %__ECHO% %VS_WHEREIS_CMD%
    REM
    REM NOTE: This will not be executed, any reasonable fake path will work.
    REM
    SET VSWHEREINSTALLDIR=C:\Program Files\Microsoft Visual Studio\2017\Community
    GOTO skip_setVsWhereInstallDir
  )
  FOR /F "delims=" %%D IN ('%VS_WHEREIS_CMD%') DO (SET VSWHEREINSTALLDIR=%%D)
  :skip_setVsWhereInstallDir
  %_VECHO% VsWhereInstallDir = '%VSWHEREINSTALLDIR%'
  IF NOT DEFINED VSWHEREINSTALLDIR (
    %_AECHO% Visual Studio 2017 / 2019 / 2022 is not installed.
    GOTO :EOF
  )
  %_AECHO% Visual Studio 2017 / 2019 / 2022 is installed.
  GOTO :EOF

:usage
  ECHO.
  ECHO Usage: %~nx0 [...]
  ECHO.
  GOTO errors

:errors
  CALL :fn_SetErrorLevel
  ENDLOCAL
  ECHO.
  ECHO Build failure, errors were encountered.
  GOTO end_of_file

:no_errors
  CALL :fn_ResetErrorLevel
  ENDLOCAL
  ECHO.
  ECHO Build success, no errors were encountered.
  GOTO end_of_file

:end_of_file
%__ECHO% EXIT /B %ERRORLEVEL%
Added win/fossil.exe.manifest.











































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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"
          xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
  <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="fossil"
                    type="win32" />
  <description>
    Simple, high-reliability, distributed software configuration management system.
  </description>
  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
    <security>
      <requestedPrivileges>
        <requestedExecutionLevel level="asInvoker" uiAccess="false" />
      </requestedPrivileges>
    </security>
  </trustInfo>
  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
    <application>
      <!-- Windows 10 -->
      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
      <!-- Windows 8.1 -->
      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
      <!-- Windows 8 -->
      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
      <!-- Windows 7 -->
      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
      <!-- Windows Vista -->
      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
    </application>
  </compatibility>
  <asmv3:application>
    <asmv3:windowsSettings
           xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
      <dpiAware>true</dpiAware>
    </asmv3:windowsSettings>
  </asmv3:application>
  <dependency>
    <dependentAssembly>
      <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls"
                        version="6.0.0.0" processorArchitecture="*"
                        publicKeyToken="6595b64144ccf1df" language="*" />
    </dependentAssembly>
  </dependency>
</assembly>
Added win/fossil.ico.

cannot compute difference between binary files

Added win/fossil.rc.


































































































































































































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/*
** Copyright (c) 2012 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the Simplified BSD License (also
** known as the "2-Clause License" or "FreeBSD License".)

** This program is distributed in the hope that it will be useful,
** but without any warranty; without even the implied warranty of
** merchantability or fitness for a particular purpose.
**
** Author contact information:
**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains resource information for the executable on Windows.
*/

#if !defined(_WIN32_WCE)
#include "winresrc.h"
#else
#include "windows.h"
#endif /* !defined(_WIN32_WCE) */

#if !defined(VS_FF_NONE)
#  define VS_FF_NONE            0x00000000L
#endif /* !defined(VS_FF_NONE) */

#include "VERSION.h"
#define _RC_COMPILE_
#include "config.h"
#include "sqlite3.h"
#include "zlib.h"

#if defined(FOSSIL_ENABLE_SSL)
#include "openssl/opensslv.h"
#endif /* defined(FOSSIL_ENABLE_SSL) */

#if defined(FOSSIL_ENABLE_TCL)
#include "tcl.h"
#endif /* defined(FOSSIL_ENABLE_TCL) */

#if defined(FOSSIL_ENABLE_JSON)
#include "json_detail.h"
#endif /* defined(FOSSIL_ENABLE_JSON) */

/*
 * English (U.S.) resources
 */

#if defined(_WIN32)
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
#pragma code_page(1252)
#endif /* defined(_WIN32) */

/*
 * Icon
 */

#define IDI_FOSSIL 8001

IDI_FOSSIL ICON "fossil.ico"

/*
 * Version
 */

VS_VERSION_INFO VERSIONINFO
  FILEVERSION RELEASE_RESOURCE_VERSION
  PRODUCTVERSION RELEASE_RESOURCE_VERSION
  FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
#if defined(_DEBUG)
  FILEFLAGS VS_FF_DEBUG
#else
  FILEFLAGS VS_FF_NONE
#endif /* defined(_DEBUG) */
  FILEOS VOS__WINDOWS32
  FILETYPE VFT_APP
  FILESUBTYPE VFT2_UNKNOWN
BEGIN
  BLOCK "StringFileInfo"
  BEGIN
    BLOCK "040904b0"
    BEGIN
      VALUE "CompanyName", "Fossil Development Team\0"
      VALUE "FileDescription", "Fossil is a simple, high-reliability, distributed software configuration management system.\0"
      VALUE "ProductName", "Fossil\0"
      VALUE "ProductVersion", "Fossil " RELEASE_VERSION " " MANIFEST_VERSION " " MANIFEST_DATE " UTC\0"
      VALUE "FileVersion", "Fossil " RELEASE_VERSION " " MANIFEST_VERSION " " MANIFEST_DATE " UTC\0"
      VALUE "InternalName", "fossil\0"
      VALUE "LegalCopyright", "Copyright © " MANIFEST_YEAR " by D. Richard Hipp.  All rights reserved.\0"
      VALUE "OriginalFilename", "fossil.exe\0"
      VALUE "CompilerName", COMPILER_NAME "\0"
      VALUE "SQLiteVersion", "SQLite " SQLITE_VERSION " " SQLITE_SOURCE_ID "\0"
#if defined(FOSSIL_DYNAMIC_BUILD)
      VALUE "DynamicBuild", "Yes\0"
#else
      VALUE "DynamicBuild", "No\0"
#endif
      VALUE "ZlibVersion", "zlib " ZLIB_VERSION "\0"
#if defined(BROKEN_MINGW_CMDLINE)
      VALUE "CommandLineIsUnicode", "No\0"
#else
      VALUE "CommandLineIsUnicode", "Yes\0"
#endif /* defined(BROKEN_MINGW_CMDLINE) */
#if defined(FOSSIL_ENABLE_SSL)
      VALUE "SslEnabled", "Yes, " OPENSSL_VERSION_TEXT "\0"
#endif /* defined(FOSSIL_ENABLE_SSL) */
      VALUE "LegacyMvRm", "Yes\0"
#if defined(FOSSIL_ENABLE_EXEC_REL_PATHS)
      VALUE "ExecRelPaths", "Yes\0"
#else
      VALUE "ExecRelPaths", "No\0"
#endif /* defined(FOSSIL_ENABLE_EXEC_REL_PATHS) */
#if defined(FOSSIL_ENABLE_TH1_DOCS)
      VALUE "Th1Docs", "Yes\0"
#else
      VALUE "Th1Docs", "No\0"
#endif /* defined(FOSSIL_ENABLE_TH1_DOCS) */
#if defined(FOSSIL_ENABLE_TH1_HOOKS)
      VALUE "Th1Hooks", "Yes\0"
#else
      VALUE "Th1Hooks", "No\0"
#endif /* defined(FOSSIL_ENABLE_TH1_HOOKS) */
#if defined(FOSSIL_ENABLE_TCL)
      VALUE "TclEnabled", "Yes, Tcl " TCL_PATCH_LEVEL "\0"
#if defined(USE_TCL_STUBS)
      VALUE "UseTclStubsEnabled", "Yes\0"
#else
      VALUE "UseTclStubsEnabled", "No\0"
#endif /* defined(USE_TCL_STUBS) */
#if defined(FOSSIL_ENABLE_TCL_STUBS)
      VALUE "TclStubsEnabled", "Yes\0"
#else
      VALUE "TclStubsEnabled", "No\0"
#endif /* defined(FOSSIL_ENABLE_TCL_STUBS) */
#if defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS)
      VALUE "TclPrivateStubsEnabled", "Yes\0"
#else
      VALUE "TclPrivateStubsEnabled", "No\0"
#endif /* defined(FOSSIL_ENABLE_TCL_PRIVATE_STUBS) */
#endif /* defined(FOSSIL_ENABLE_TCL) */
#if defined(FOSSIL_ENABLE_JSON)
      VALUE "JsonEnabled", "Yes, cson " FOSSIL_JSON_API_VERSION "\0"
#endif /* defined(FOSSIL_ENABLE_JSON) */
#if defined(USE_MMAN_H)
      VALUE "UseMmanEnabled", "Yes\0"
#else
      VALUE "UseMmanEnabled", "No\0"
#endif /* defined(USE_MMAN_H) */
#if defined(USE_SEE)
      VALUE "UseSeeEnabled", "Yes\0"
#else
      VALUE "UseSeeEnabled", "No\0"
#endif /* defined(USE_SEE) */
      VALUE "MarkdownEnabled", "Yes\0"
#if defined(FOSSIL_DEBUG)
      VALUE "Debug", "Yes\0"
#else
      VALUE "Debug", "No\0"
#endif /* defined(FOSSIL_DEBUG) */
#if defined(FOSSIL_OMIT_DELTA_CKSUM_TEST)
      VALUE "OmitDeltaCksumTest", "Yes\0"
#else
      VALUE "OmitDeltaCksumTest", "No\0"
#endif /* defined(FOSSIL_OMIT_DELTA_CKSUM_TEST) */
#if defined(FOSSIL_ALLOW_OUT_OF_ORDER_DATES)
      VALUE "AllowOutOfOrderDates", "Yes\0"
#else
      VALUE "AllowOutOfOrderDates", "No\0"
#endif /* defined(FOSSIL_ALLOW_OUT_OF_ORDER_DATES) */
    END
  END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x409, 0x4b0
  END
END

/*
 * This embedded manifest is needed for Windows 8.1.
 */

#ifndef RT_MANIFEST
#define RT_MANIFEST     24
#endif /* RT_MANIFEST */

#ifndef CREATEPROCESS_MANIFEST_RESOURCE_ID
#define CREATEPROCESS_MANIFEST_RESOURCE_ID 1
#endif /* CREATEPROCESS_MANIFEST_RESOURCE_ID */

CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "fossil.exe.manifest"
Added win/include/dirent.h.








































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * Dirent interface for Microsoft Visual Studio
 * Version 1.23.1
 *
 * Copyright (C) 2006-2012 Toni Ronkko
 * This file is part of dirent.  Dirent may be freely distributed
 * under the MIT license.  For all details and documentation, see
 * https://github.com/tronkko/dirent
 */
#ifndef DIRENT_H
#define DIRENT_H

/*
 * Include windows.h without Windows Sockets 1.1 to prevent conflicts with
 * Windows Sockets 2.0.
 */
#ifndef WIN32_LEAN_AND_MEAN
#   define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>

#include <stdio.h>
#include <stdarg.h>
#include <wchar.h>
#include <string.h>
#include <stdlib.h>
#include <malloc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>

/* Indicates that d_type field is available in dirent structure */
#define _DIRENT_HAVE_D_TYPE

/* Indicates that d_namlen field is available in dirent structure */
#define _DIRENT_HAVE_D_NAMLEN

/* Entries missing from MSVC 6.0 */
#if !defined(FILE_ATTRIBUTE_DEVICE)
#   define FILE_ATTRIBUTE_DEVICE 0x40
#endif

/* File type and permission flags for stat(), general mask */
#if !defined(S_IFMT)
#   define S_IFMT _S_IFMT
#endif

/* Directory bit */
#if !defined(S_IFDIR)
#   define S_IFDIR _S_IFDIR
#endif

/* Character device bit */
#if !defined(S_IFCHR)
#   define S_IFCHR _S_IFCHR
#endif

/* Pipe bit */
#if !defined(S_IFFIFO)
#   define S_IFFIFO _S_IFFIFO
#endif

/* Regular file bit */
#if !defined(S_IFREG)
#   define S_IFREG _S_IFREG
#endif

/* Read permission */
#if !defined(S_IREAD)
#   define S_IREAD _S_IREAD
#endif

/* Write permission */
#if !defined(S_IWRITE)
#   define S_IWRITE _S_IWRITE
#endif

/* Execute permission */
#if !defined(S_IEXEC)
#   define S_IEXEC _S_IEXEC
#endif

/* Pipe */
#if !defined(S_IFIFO)
#   define S_IFIFO _S_IFIFO
#endif

/* Block device */
#if !defined(S_IFBLK)
#   define S_IFBLK 0
#endif

/* Link */
#if !defined(S_IFLNK)
#   define S_IFLNK 0
#endif

/* Socket */
#if !defined(S_IFSOCK)
#   define S_IFSOCK 0
#endif

/* Read user permission */
#if !defined(S_IRUSR)
#   define S_IRUSR S_IREAD
#endif

/* Write user permission */
#if !defined(S_IWUSR)
#   define S_IWUSR S_IWRITE
#endif

/* Execute user permission */
#if !defined(S_IXUSR)
#   define S_IXUSR 0
#endif

/* Read group permission */
#if !defined(S_IRGRP)
#   define S_IRGRP 0
#endif

/* Write group permission */
#if !defined(S_IWGRP)
#   define S_IWGRP 0
#endif

/* Execute group permission */
#if !defined(S_IXGRP)
#   define S_IXGRP 0
#endif

/* Read others permission */
#if !defined(S_IROTH)
#   define S_IROTH 0
#endif

/* Write others permission */
#if !defined(S_IWOTH)
#   define S_IWOTH 0
#endif

/* Execute others permission */
#if !defined(S_IXOTH)
#   define S_IXOTH 0
#endif

/* Maximum length of file name */
#if !defined(PATH_MAX)
#   define PATH_MAX MAX_PATH
#endif
#if !defined(FILENAME_MAX)
#   define FILENAME_MAX MAX_PATH
#endif
#if !defined(NAME_MAX)
#   define NAME_MAX FILENAME_MAX
#endif

/* File type flags for d_type */
#define DT_UNKNOWN 0
#define DT_REG S_IFREG
#define DT_DIR S_IFDIR
#define DT_FIFO S_IFIFO
#define DT_SOCK S_IFSOCK
#define DT_CHR S_IFCHR
#define DT_BLK S_IFBLK
#define DT_LNK S_IFLNK

/* Macros for converting between st_mode and d_type */
#define IFTODT(mode) ((mode) & S_IFMT)
#define DTTOIF(type) (type)

/*
 * File type macros.  Note that block devices, sockets and links cannot be
 * distinguished on Windows and the macros S_ISBLK, S_ISSOCK and S_ISLNK are
 * only defined for compatibility.  These macros should always return false
 * on Windows.
 */
#if !defined(S_ISFIFO)
#   define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
#endif
#if !defined(S_ISDIR)
#   define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#endif
#if !defined(S_ISREG)
#   define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
#endif
#if !defined(S_ISLNK)
#   define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
#endif
#if !defined(S_ISSOCK)
#   define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
#endif
#if !defined(S_ISCHR)
#   define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
#endif
#if !defined(S_ISBLK)
#   define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
#endif

/* Return the exact length of the file name without zero terminator */
#define _D_EXACT_NAMLEN(p) ((p)->d_namlen)

/* Return the maximum size of a file name */
#define _D_ALLOC_NAMLEN(p) ((PATH_MAX)+1)


#ifdef __cplusplus
extern "C" {
#endif


/* Wide-character version */
struct _wdirent {
    /* Always zero */
    long d_ino;

    /* File position within stream */
    long d_off;

    /* Structure size */
    unsigned short d_reclen;

    /* Length of name without \0 */
    size_t d_namlen;

    /* File type */
    int d_type;

    /* File name */
    wchar_t d_name[PATH_MAX+1];
};
typedef struct _wdirent _wdirent;

struct _WDIR {
    /* Current directory entry */
    struct _wdirent ent;

    /* Private file data */
    WIN32_FIND_DATAW data;

    /* True if data is valid */
    int cached;

    /* Win32 search handle */
    HANDLE handle;

    /* Initial directory name */
    wchar_t *patt;
};
typedef struct _WDIR _WDIR;

/* Multi-byte character version */
struct dirent {
    /* Always zero */
    long d_ino;

    /* File position within stream */
    long d_off;

    /* Structure size */
    unsigned short d_reclen;

    /* Length of name without \0 */
    size_t d_namlen;

    /* File type */
    int d_type;

    /* File name */
    char d_name[PATH_MAX+1];
};
typedef struct dirent dirent;

struct DIR {
    struct dirent ent;
    struct _WDIR *wdirp;
};
typedef struct DIR DIR;


/* Dirent functions */
static DIR *opendir (const char *dirname);
static _WDIR *_wopendir (const wchar_t *dirname);

static struct dirent *readdir (DIR *dirp);
static struct _wdirent *_wreaddir (_WDIR *dirp);

static int readdir_r(
    DIR *dirp, struct dirent *entry, struct dirent **result);
static int _wreaddir_r(
    _WDIR *dirp, struct _wdirent *entry, struct _wdirent **result);

static int closedir (DIR *dirp);
static int _wclosedir (_WDIR *dirp);

static void rewinddir (DIR* dirp);
static void _wrewinddir (_WDIR* dirp);

static int scandir (const char *dirname, struct dirent ***namelist,
    int (*filter)(const struct dirent*),
    int (*compare)(const struct dirent**, const struct dirent**));

static int alphasort (const struct dirent **a, const struct dirent **b);

static int versionsort (const struct dirent **a, const struct dirent **b);


/* For compatibility with Symbian */
#define wdirent _wdirent
#define WDIR _WDIR
#define wopendir _wopendir
#define wreaddir _wreaddir
#define wclosedir _wclosedir
#define wrewinddir _wrewinddir


/* Internal utility functions */
static WIN32_FIND_DATAW *dirent_first (_WDIR *dirp);
static WIN32_FIND_DATAW *dirent_next (_WDIR *dirp);

static int dirent_mbstowcs_s(
    size_t *pReturnValue,
    wchar_t *wcstr,
    size_t sizeInWords,
    const char *mbstr,
    size_t count);

static int dirent_wcstombs_s(
    size_t *pReturnValue,
    char *mbstr,
    size_t sizeInBytes,
    const wchar_t *wcstr,
    size_t count);

static void dirent_set_errno (int error);


/*
 * Open directory stream DIRNAME for read and return a pointer to the
 * internal working area that is used to retrieve individual directory
 * entries.
 */
static _WDIR*
_wopendir(
    const wchar_t *dirname)
{
    _WDIR *dirp = NULL;
    int error;

    /* Must have directory name */
    if (dirname == NULL  ||  dirname[0] == '\0') {
        dirent_set_errno (ENOENT);
        return NULL;
    }

    /* Allocate new _WDIR structure */
    dirp = (_WDIR*) malloc (sizeof (struct _WDIR));
    if (dirp != NULL) {
        DWORD n;

        /* Reset _WDIR structure */
        dirp->handle = INVALID_HANDLE_VALUE;
        dirp->patt = NULL;
        dirp->cached = 0;

        /* Compute the length of full path plus zero terminator
         *
         * Note that on WinRT there's no way to convert relative paths
         * into absolute paths, so just assume it is an absolute path.
         */
#       if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
            n = wcslen(dirname);
#       else
            n = GetFullPathNameW (dirname, 0, NULL, NULL);
#       endif

        /* Allocate room for absolute directory name and search pattern */
        dirp->patt = (wchar_t*) malloc (sizeof (wchar_t) * n + 16);
        if (dirp->patt) {

            /*
             * Convert relative directory name to an absolute one.  This
             * allows rewinddir() to function correctly even when current
             * working directory is changed between opendir() and rewinddir().
             *
             * Note that on WinRT there's no way to convert relative paths
             * into absolute paths, so just assume it is an absolute path.
             */
#           if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
                wcsncpy_s(dirp->patt, n+1, dirname, n);
#           else
                n = GetFullPathNameW (dirname, n, dirp->patt, NULL);
#           endif
            if (n > 0) {
                wchar_t *p;

                /* Append search pattern \* to the directory name */
                p = dirp->patt + n;
                if (dirp->patt < p) {
                    switch (p[-1]) {
                    case '\\':
                    case '/':
                    case ':':
                        /* Directory ends in path separator, e.g. c:\temp\ */
                        /*NOP*/;
                        break;

                    default:
                        /* Directory name doesn't end in path separator */
                        *p++ = '\\';
                    }
                }
                *p++ = '*';
                *p = '\0';

                /* Open directory stream and retrieve the first entry */
                if (dirent_first (dirp)) {
                    /* Directory stream opened successfully */
                    error = 0;
                } else {
                    /* Cannot retrieve first entry */
                    error = 1;
                    dirent_set_errno (ENOENT);
                }

            } else {
                /* Cannot retrieve full path name */
                dirent_set_errno (ENOENT);
                error = 1;
            }

        } else {
            /* Cannot allocate memory for search pattern */
            error = 1;
        }

    } else {
        /* Cannot allocate _WDIR structure */
        error = 1;
    }

    /* Clean up in case of error */
    if (error  &&  dirp) {
        _wclosedir (dirp);
        dirp = NULL;
    }

    return dirp;
}

/*
 * Read next directory entry.
 *
 * Returns pointer to static directory entry which may be overwritten by
 * subsequent calls to _wreaddir().
 */
static struct _wdirent*
_wreaddir(
    _WDIR *dirp)
{
    struct _wdirent *entry;

    /*
     * Read directory entry to buffer.  We can safely ignore the return value
     * as entry will be set to NULL in case of error.
     */
    (void) _wreaddir_r (dirp, &dirp->ent, &entry);

    /* Return pointer to statically allocated directory entry */
    return entry;
}

/*
 * Read next directory entry.
 *
 * Returns zero on success.  If end of directory stream is reached, then sets
 * result to NULL and returns zero.
 */
static int
_wreaddir_r(
    _WDIR *dirp,
    struct _wdirent *entry,
    struct _wdirent **result)
{
    WIN32_FIND_DATAW *datap;

    /* Read next directory entry */
    datap = dirent_next (dirp);
    if (datap) {
        size_t n;
        DWORD attr;

        /*
         * Copy file name as wide-character string.  If the file name is too
         * long to fit in to the destination buffer, then truncate file name
         * to PATH_MAX characters and zero-terminate the buffer.
         */
        n = 0;
        while (n < PATH_MAX  &&  datap->cFileName[n] != 0) {
            entry->d_name[n] = datap->cFileName[n];
            n++;
        }
        entry->d_name[n] = 0;

        /* Length of file name excluding zero terminator */
        entry->d_namlen = n;

        /* File type */
        attr = datap->dwFileAttributes;
        if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
            entry->d_type = DT_CHR;
        } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
            entry->d_type = DT_DIR;
        } else {
            entry->d_type = DT_REG;
        }

        /* Reset dummy fields */
        entry->d_ino = 0;
        entry->d_off = 0;
        entry->d_reclen = sizeof (struct _wdirent);

        /* Set result address */
        *result = entry;

    } else {

        /* Return NULL to indicate end of directory */
        *result = NULL;

    }

    return /*OK*/0;
}

/*
 * Close directory stream opened by opendir() function.  This invalidates the
 * DIR structure as well as any directory entry read previously by
 * _wreaddir().
 */
static int
_wclosedir(
    _WDIR *dirp)
{
    int ok;
    if (dirp) {

        /* Release search handle */
        if (dirp->handle != INVALID_HANDLE_VALUE) {
            FindClose (dirp->handle);
            dirp->handle = INVALID_HANDLE_VALUE;
        }

        /* Release search pattern */
        if (dirp->patt) {
            free (dirp->patt);
            dirp->patt = NULL;
        }

        /* Release directory structure */
        free (dirp);
        ok = /*success*/0;

    } else {

        /* Invalid directory stream */
        dirent_set_errno (EBADF);
        ok = /*failure*/-1;

    }
    return ok;
}

/*
 * Rewind directory stream such that _wreaddir() returns the very first
 * file name again.
 */
static void
_wrewinddir(
    _WDIR* dirp)
{
    if (dirp) {
        /* Release existing search handle */
        if (dirp->handle != INVALID_HANDLE_VALUE) {
            FindClose (dirp->handle);
        }

        /* Open new search handle */
        dirent_first (dirp);
    }
}

/* Get first directory entry (internal) */
static WIN32_FIND_DATAW*
dirent_first(
    _WDIR *dirp)
{
    WIN32_FIND_DATAW *datap;

    /* Open directory and retrieve the first entry */
    dirp->handle = FindFirstFileExW(
        dirp->patt, FindExInfoStandard, &dirp->data,
        FindExSearchNameMatch, NULL, 0);
    if (dirp->handle != INVALID_HANDLE_VALUE) {

        /* a directory entry is now waiting in memory */
        datap = &dirp->data;
        dirp->cached = 1;

    } else {

        /* Failed to re-open directory: no directory entry in memory */
        dirp->cached = 0;
        datap = NULL;

    }
    return datap;
}

/*
 * Get next directory entry (internal).
 *
 * Returns 
 */
static WIN32_FIND_DATAW*
dirent_next(
    _WDIR *dirp)
{
    WIN32_FIND_DATAW *p;

    /* Get next directory entry */
    if (dirp->cached != 0) {

        /* A valid directory entry already in memory */
        p = &dirp->data;
        dirp->cached = 0;

    } else if (dirp->handle != INVALID_HANDLE_VALUE) {

        /* Get the next directory entry from stream */
        if (FindNextFileW (dirp->handle, &dirp->data) != FALSE) {
            /* Got a file */
            p = &dirp->data;
        } else {
            /* The very last entry has been processed or an error occurred */
            FindClose (dirp->handle);
            dirp->handle = INVALID_HANDLE_VALUE;
            p = NULL;
        }

    } else {

        /* End of directory stream reached */
        p = NULL;

    }

    return p;
}

/*
 * Open directory stream using plain old C-string.
 */
static DIR*
opendir(
    const char *dirname) 
{
    struct DIR *dirp;
    int error;

    /* Must have directory name */
    if (dirname == NULL  ||  dirname[0] == '\0') {
        dirent_set_errno (ENOENT);
        return NULL;
    }

    /* Allocate memory for DIR structure */
    dirp = (DIR*) malloc (sizeof (struct DIR));
    if (dirp) {
        wchar_t wname[PATH_MAX + 1];
        size_t n;

        /* Convert directory name to wide-character string */
        error = dirent_mbstowcs_s(
            &n, wname, PATH_MAX + 1, dirname, PATH_MAX + 1);
        if (!error) {

            /* Open directory stream using wide-character name */
            dirp->wdirp = _wopendir (wname);
            if (dirp->wdirp) {
                /* Directory stream opened */
                error = 0;
            } else {
                /* Failed to open directory stream */
                error = 1;
            }

        } else {
            /*
             * Cannot convert file name to wide-character string.  This
             * occurs if the string contains invalid multi-byte sequences or
             * the output buffer is too small to contain the resulting
             * string.
             */
            error = 1;
        }

    } else {
        /* Cannot allocate DIR structure */
        error = 1;
    }

    /* Clean up in case of error */
    if (error  &&  dirp) {
        free (dirp);
        dirp = NULL;
    }

    return dirp;
}

/*
 * Read next directory entry.
 */
static struct dirent*
readdir(
    DIR *dirp)
{
    struct dirent *entry;

    /*
     * Read directory entry to buffer.  We can safely ignore the return value
     * as entry will be set to NULL in case of error.
     */
    (void) readdir_r (dirp, &dirp->ent, &entry);

    /* Return pointer to statically allocated directory entry */
    return entry;
}

/*
 * Read next directory entry into called-allocated buffer.
 *
 * Returns zero on success.  If the end of directory stream is reached, then
 * sets result to NULL and returns zero.
 */
static int
readdir_r(
    DIR *dirp,
    struct dirent *entry,
    struct dirent **result)
{
    WIN32_FIND_DATAW *datap;

    /* Read next directory entry */
    datap = dirent_next (dirp->wdirp);
    if (datap) {
        size_t n;
        int error;

        /* Attempt to convert file name to multi-byte string */
        error = dirent_wcstombs_s(
            &n, entry->d_name, PATH_MAX + 1, datap->cFileName, PATH_MAX + 1);

        /*
         * If the file name cannot be represented by a multi-byte string,
         * then attempt to use old 8+3 file name.  This allows traditional
         * Unix-code to access some file names despite of unicode
         * characters, although file names may seem unfamiliar to the user.
         *
         * Be ware that the code below cannot come up with a short file
         * name unless the file system provides one.  At least
         * VirtualBox shared folders fail to do this.
         */
        if (error  &&  datap->cAlternateFileName[0] != '\0') {
            error = dirent_wcstombs_s(
                &n, entry->d_name, PATH_MAX + 1,
                datap->cAlternateFileName, PATH_MAX + 1);
        }

        if (!error) {
            DWORD attr;

            /* Length of file name excluding zero terminator */
            entry->d_namlen = n - 1;

            /* File attributes */
            attr = datap->dwFileAttributes;
            if ((attr & FILE_ATTRIBUTE_DEVICE) != 0) {
                entry->d_type = DT_CHR;
            } else if ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) {
                entry->d_type = DT_DIR;
            } else {
                entry->d_type = DT_REG;
            }

            /* Reset dummy fields */
            entry->d_ino = 0;
            entry->d_off = 0;
            entry->d_reclen = sizeof (struct dirent);

        } else {

            /*
             * Cannot convert file name to multi-byte string so construct
             * an erroneous directory entry and return that.  Note that
             * we cannot return NULL as that would stop the processing
             * of directory entries completely.
             */
            entry->d_name[0] = '?';
            entry->d_name[1] = '\0';
            entry->d_namlen = 1;
            entry->d_type = DT_UNKNOWN;
            entry->d_ino = 0;
            entry->d_off = -1;
            entry->d_reclen = 0;

        }

        /* Return pointer to directory entry */
        *result = entry;

    } else {

        /* No more directory entries */
        *result = NULL;

    }

    return /*OK*/0;
}

/*
 * Close directory stream.
 */
static int
closedir(
    DIR *dirp)
{
    int ok;
    if (dirp) {

        /* Close wide-character directory stream */
        ok = _wclosedir (dirp->wdirp);
        dirp->wdirp = NULL;

        /* Release multi-byte character version */
        free (dirp);

    } else {

        /* Invalid directory stream */
        dirent_set_errno (EBADF);
        ok = /*failure*/-1;

    }
    return ok;
}

/*
 * Rewind directory stream to beginning.
 */
static void
rewinddir(
    DIR* dirp)
{
    /* Rewind wide-character string directory stream */
    _wrewinddir (dirp->wdirp);
}

/*
 * Scan directory for entries.
 */
static int
scandir(
    const char *dirname,
    struct dirent ***namelist,
    int (*filter)(const struct dirent*),
    int (*compare)(const struct dirent**, const struct dirent**))
{
    struct dirent **files = NULL;
    size_t size = 0;
    size_t allocated = 0;
    const size_t init_size = 1;
    DIR *dir = NULL;
    struct dirent *entry;
    struct dirent *tmp = NULL;
    size_t i;
    int result = 0;

    /* Open directory stream */
    dir = opendir (dirname);
    if (dir) {

        /* Read directory entries to memory */
        while (1) {

            /* Enlarge pointer table to make room for another pointer */
            if (size >= allocated) {
                void *p;
                size_t num_entries;

                /* Compute number of entries in the enlarged pointer table */
                if (size < init_size) {
                    /* Allocate initial pointer table */
                    num_entries = init_size;
                } else {
                    /* Double the size */
                    num_entries = size * 2;
                }

                /* Allocate first pointer table or enlarge existing table */
                p = realloc (files, sizeof (void*) * num_entries);
                if (p != NULL) {
                    /* Got the memory */
                    files = (dirent**) p;
                    allocated = num_entries;
                } else {
                    /* Out of memory */
                    result = -1;
                    break;
                }

            }

            /* Allocate room for temporary directory entry */
            if (tmp == NULL) {
                tmp = (struct dirent*) malloc (sizeof (struct dirent));
                if (tmp == NULL) {
                    /* Cannot allocate temporary directory entry */
                    result = -1;
                    break;
                }
            }

            /* Read directory entry to temporary area */
            if (readdir_r (dir, tmp, &entry) == /*OK*/0) {

                /* Did we get an entry? */
                if (entry != NULL) {
                    int pass;

                    /* Determine whether to include the entry in result */
                    if (filter) {
                        /* Let the filter function decide */
                        pass = filter (tmp);
                    } else {
                        /* No filter function, include everything */
                        pass = 1;
                    }

                    if (pass) {
                        /* Store the temporary entry to pointer table */
                        files[size++] = tmp;
                        tmp = NULL;

                        /* Keep up with the number of files */
                        result++;
                    }

                } else {

                    /*
                     * End of directory stream reached => sort entries and
                     * exit.
                     */
                    qsort (files, size, sizeof (void*),
                        (int (*) (const void*, const void*)) compare);
                    break;

                }

            } else {
                /* Error reading directory entry */
                result = /*Error*/ -1;
                break;
            }

        }

    } else {
        /* Cannot open directory */
        result = /*Error*/ -1;
    }

    /* Release temporary directory entry */
    if (tmp) {
        free (tmp);
    }

    /* Release allocated memory on error */
    if (result < 0) {
        for (i = 0; i < size; i++) {
            free (files[i]);
        }
        free (files);
        files = NULL;
    }

    /* Close directory stream */
    if (dir) {
        closedir (dir);
    }

    /* Pass pointer table to caller */
    if (namelist) {
        *namelist = files;
    }
    return result;
}

/* Alphabetical sorting */
static int
alphasort(
    const struct dirent **a, const struct dirent **b)
{
    return strcoll ((*a)->d_name, (*b)->d_name);
}

/* Sort versions */
static int
versionsort(
    const struct dirent **a, const struct dirent **b)
{
    /* FIXME: implement strverscmp and use that */
    return alphasort (a, b);
}


/* Convert multi-byte string to wide character string */
static int
dirent_mbstowcs_s(
    size_t *pReturnValue,
    wchar_t *wcstr,
    size_t sizeInWords,
    const char *mbstr,
    size_t count)
{
    int error;

#if defined(_MSC_VER)  &&  _MSC_VER >= 1400

    /* Microsoft Visual Studio 2005 or later */
    error = mbstowcs_s (pReturnValue, wcstr, sizeInWords, mbstr, count);

#else

    /* Older Visual Studio or non-Microsoft compiler */
    size_t n;

    /* Convert to wide-character string (or count characters) */
    n = mbstowcs (wcstr, mbstr, sizeInWords);
    if (!wcstr  ||  n < count) {

        /* Zero-terminate output buffer */
        if (wcstr  &&  sizeInWords) {
            if (n >= sizeInWords) {
                n = sizeInWords - 1;
            }
            wcstr[n] = 0;
        }

        /* Length of resulting multi-byte string WITH zero terminator */
        if (pReturnValue) {
            *pReturnValue = n + 1;
        }

        /* Success */
        error = 0;

    } else {

        /* Could not convert string */
        error = 1;

    }

#endif

    return error;
}

/* Convert wide-character string to multi-byte string */
static int
dirent_wcstombs_s(
    size_t *pReturnValue,
    char *mbstr,
    size_t sizeInBytes, /* max size of mbstr */
    const wchar_t *wcstr,
    size_t count)
{
    int error;

#if defined(_MSC_VER)  &&  _MSC_VER >= 1400

    /* Microsoft Visual Studio 2005 or later */
    error = wcstombs_s (pReturnValue, mbstr, sizeInBytes, wcstr, count);

#else

    /* Older Visual Studio or non-Microsoft compiler */
    size_t n;

    /* Convert to multi-byte string (or count the number of bytes needed) */
    n = wcstombs (mbstr, wcstr, sizeInBytes);
    if (!mbstr  ||  n < count) {

        /* Zero-terminate output buffer */
        if (mbstr  &&  sizeInBytes) {
            if (n >= sizeInBytes) {
                n = sizeInBytes - 1;
            }
            mbstr[n] = '\0';
        }

        /* Length of resulting multi-bytes string WITH zero-terminator */
        if (pReturnValue) {
            *pReturnValue = n + 1;
        }

        /* Success */
        error = 0;

    } else {

        /* Cannot convert string */
        error = 1;

    }

#endif

    return error;
}

/* Set errno variable */
static void
dirent_set_errno(
    int error)
{
#if defined(_MSC_VER)  &&  _MSC_VER >= 1400

    /* Microsoft Visual Studio 2005 and later */
    _set_errno (error);

#else

    /* Non-Microsoft compiler or older Microsoft compiler */
    errno = error;

#endif
}


#ifdef __cplusplus
}
#endif
#endif /*DIRENT_H*/

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#ifndef _UNISTD_H
#define _UNISTD_H	 1

/* This file intended to serve as a drop-in replacement for
 *  unistd.h on Windows
 *  Please add functionality as neeeded
 */

#include <stdlib.h>
#include <io.h>
#define srandom srand
#define random rand
#if defined(__DMC__)
#endif

#if defined(_WIN32)
#define _CRT_SECURE_NO_WARNINGS 1

#ifndef F_OK
#define F_OK 0
#endif /* not F_OK */

#ifndef X_OK
#define X_OK 1
#endif /* not X_OK */

#ifndef W_OK
#define W_OK 2
#endif /* not W_OK */

#ifndef R_OK
#define R_OK 4
#endif /* not R_OK */

#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)



#endif

#define access _access
#define ftruncate _chsize

#define ssize_t int

#endif /* unistd.h  */
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<title>How CGI Works In Fossil</title>

<h2>Introduction</h2>

CGI or "Common Gateway Interface" is a venerable yet reliable technique for
generating dynamic web content.  This article gives a quick background on how
CGI works and describes how Fossil can act as a CGI service.

This is a "how it works" guide.  This document provides background
information on the CGI protocol so that you can better understand what
is going on behind the scenes.  If you just want to set up Fossil
as a CGI server, see the [./server/ | Fossil Server Setup] page.  Or
if you want to develop CGI-based extensions to Fossil, see
the [./serverext.wiki|CGI Server Extensions] page.

<h2>A Quick Review Of CGI</h2>

An HTTP request is a block of text that is sent by a client application
(usually a web browser) and arrives at the web server over a network
connection.  The HTTP request contains a URL that describes the information
being requested.  The URL in the HTTP request is typically the same URL
that appears in the URL bar at the top of the web browser that is making
the request.  The URL might contain a "?" character followed by
query parameters.  The HTTP will usually also contain other information
such as the name of the application that made the request, whether or
not the requesting application can accept a compressed reply, POST
parameters from forms, and so forth.

The job of the web server is to interpret the HTTP request and formulate
an appropriate reply.
The web server is free to interpret the HTTP request in any way it wants,
but most web servers follow a similar pattern, described below.
(Note: details may vary from one web server to another.)

Suppose the filename component of the URL in the HTTP request looks like this:

<pre>/one/two/timeline/four</pre>

Most web servers will search their content area for files that match
some prefix of the URL.  The search starts with <b>/one</b>, then goes to
<b>/one/two</b>, then <b>/one/two/timeline</b>, and finally
<b>/one/two/timeline/four</b> is checked.  The search stops at the first
match.

Suppose the first match is <b>/one/two</b>.  If <b>/one/two</b> is an
ordinary file in the content area, then that file is returned as static
content.  The "<b>/timeline/four</b>" suffix is silently ignored.

If <b>/one/two</b> is a CGI script (or program), then the web server
executes the <b>/one/two</b> script.  The output generated by
the script is collected and repackaged as the HTTP reply.

Before executing the CGI script, the web server will set up various
environment variables with information useful to the CGI script:
<table>
<tr><th>Variable<th>Meaning
<tr><td>GATEWAY_INTERFACE<td>Always set to "CGI/1.0"
<tr><td>REQUEST_URI
    <td>The input URL from the HTTP request.
<tr><td>SCRIPT_NAME
    <td>The prefix of the input URL that matches the CGI script name.
    In this example: "/one/two".
<tr><td>PATH_INFO
    <td>The suffix of the URL beyond the name of the CGI script.
    In this example: "timeline/four".
<tr><td>QUERY_STRING
    <td>The query string that follows the "?" in the URL, if there is one.
</table>

There are other CGI environment variables beyond those listed above.
Many Fossil servers implement the
[https://fossil-scm.org/home/test_env/two/three?abc=xyz|test_env]
webpage that shows some of the CGI environment
variables that Fossil pays attention to.

In addition to setting various CGI environment variables, if the HTTP
request contains POST content, then the web server relays the POST content
to standard input of the CGI script.

In summary, the task of the
CGI script is to read the various CGI environment variables and
the POST content on standard input (if any), figure out an appropriate
reply, then write that reply on standard output.
The web server will read the output from the CGI script, reformat it
into an appropriate HTTP reply, and relay the result back to the
requesting application.
The CGI script exits as soon as it generates a single reply.
The web server will (usually) persist and handle multiple HTTP requests,
but a CGI script handles just one HTTP request and then exits.

The above is a rough outline of how CGI works.
There are many details omitted from this brief discussion.
See other on-line CGI tutorials for further information.

<h2>How Fossil Acts As A CGI Program</h2>

An appropriate CGI script for running Fossil will look something
like the following:

<pre>
#!/usr/bin/fossil
repository: /home/www/repos/project.fossil
</pre>

The first line of the script is a
"[https://en.wikipedia.org/wiki/Shebang_%28Unix%29|shebang]"
that tells the operating system what program to use as the interpreter
for this script.  On unix, when you execute a script that starts with
a shebang, the operating system runs the program identified by the
shebang with a single argument that is the full pathname of the script
itself.
In our example, the interpreter is Fossil, and the argument might
be something like "/var/www/cgi-bin/one/two" (depending on how your
particular web server is configured).

The Fossil program that is run as the script interpreter
is the same Fossil that runs when
you type ordinary Fossil commands like "fossil sync" or "fossil commit".
But in this case, as soon as it launches, the Fossil program
recognizes that the GATEWAY_INTERFACE environment variable is
set to "CGI/1.0" and it therefore knows that it is being used as
CGI rather than as an ordinary command-line tool, and behaves accordingly.

When Fossil recognizes that it is being run as CGI, it opens and reads
the file identified by its sole argument (the file named by
<code>argv&#91;1&#93;</code>).  In our example, the second line of that file
tells Fossil the location of the repository it will be serving.
Fossil then starts looking at the CGI environment variables to figure
out what web page is being requested, generates that one web page,
then exits.

Usually, the webpage being requested is the first term of the
PATH_INFO environment variable.  (Exceptions to this rule are noted
in the sequel.)  For our example, the first term of PATH_INFO
is "timeline", which means that Fossil will generate
the [/help?cmd=/timeline|/timeline] webpage.

With Fossil, terms of PATH_INFO beyond the webpage name are converted into
the "name" query parameter.  Hence, the following two URLs mean
exactly the same thing to Fossil:
<ol type='A'>
<li> [https://fossil-scm.org/home/info/c14ecc43]
<li> [https://fossil-scm.org/home/info?name=c14ecc43]
</ol>

In both cases, the CGI script is called "/fossil".  For case (A),
the PATH_INFO variable will be "info/c14ecc43" and so the
"[/help?cmd=/info|/info]" webpage will be generated and the suffix of
PATH_INFO will be converted into the "name" query parameter, which
identifies the artifact about which information is requested.
In case (B), the PATH_INFO is just "info", but the same "name"
query parameter is set explicitly by the URL itself.

<h2>Serving Multiple Fossil Repositories From One CGI Script</h2>

The previous example showed how to serve a single Fossil repository
using a single CGI script.
On a website that wants to serve multiple repositories, one could
simply create multiple CGI scripts, one script for each repository.
But it is also possible to serve multiple Fossil repositories from
a single CGI script.

If the CGI script for Fossil contains a "directory:" line instead of
a "repository:" line, then the argument to "directory:" is the name
of a directory that contains multiple repository files, each ending
with ".fossil".  For example:

<pre>
#!/usr/bin/fossil
directory: /home/www/repos
</pre>

Suppose the /home/www/repos directory contains files named
<b>one.fossil</b>, <b>two.fossil</b>, and <b>subdir/three.fossil</b>.
Further suppose that the name of the CGI script (relative to the root
of the webserver document area) is "cgis/example2".  Then to
see the timeline for the "three.fossil" repository, the URL would be:

<pre>
http://example.com/cgis/example2/subdir/three/timeline
</pre>

Here is what happens:
<ol>
<li> The input URI on the HTTP request is
     <b>/cgis/example2/subdir/three/timeline</b>
<li> The web server searches prefixes of the input URI until it finds
     the "cgis/example2" script.  The web server then sets
     PATH_INFO to the "subdir/three/timeline" suffix and invokes the
     "cgis/example2" script.
<li> Fossil runs and sees the "directory:" line pointing to
     "/home/www/repos".  Fossil then starts pulling terms off the
     front of the PATH_INFO looking for a repository.  It first looks
     at "/home/www/resps/subdir.fossil" but there is no such repository.
     So then it looks at "/home/www/repos/subdir/three.fossil" and finds
     a repository.  The PATH_INFO is shortened by removing
     "subdir/three/" leaving it at just "timeline".
<li> Fossil looks at the rest of PATH_INFO to see that the webpage
     requested is "timeline".
</ol>
<a id="cgivar"></a>

The web server sets many environment variables in step 2 in addition
to just PATH_INFO.  The following diagram shows a few of these variables
and their relationship to the request URL:

<verbatim type="pikchr">
charwid = 0.075
thickness = 0

SCHEME: box "https://" mono fit
DOMAIN: box "example.com" mono fit
SCRIPT: box "/cgis/example2" mono fit
PATH:   box "/subdir/three/timeline" mono fit
QUERY:  box "?c=55d7e1" mono fit

thickness = 0.01

DB: box at 0.3 below DOMAIN "HTTP_HOST"    mono fit invis
SB: box at 0.3 below SCRIPT "SCRIPT_NAME"  mono fit invis
PB: box at 0.3 below PATH   "PATH_INFO"    mono fit invis
QB: box at 0.3 below QUERY  "QUERY_STRING" mono fit invis
RB: box at 0.5 above PATH   "REQUEST_URI"  mono fit invis

color = lightgray

box at SCHEME width SCHEME.width height SCHEME.height
line fill 0x7799CC behind QUERY \
  from SCRIPT.nw \
    to RB.sw \
    to RB.se \
    to QUERY.ne \
  close
line fill 0x99CCFF behind DOMAIN \
  from DOMAIN.nw \
    to DOMAIN.sw \
    to DB.n \
    to DOMAIN.se \
    to DOMAIN.ne \
  close
line fill 0xCCEEFF behind SCRIPT \
  from SCRIPT.nw \
    to SCRIPT.sw \
    to SB.n \
    to SCRIPT.se \
    to SCRIPT.ne \
  close
line fill 0x99CCFF behind PATH \
  from PATH.nw \
    to PATH.sw \
    to PB.n \
    to PATH.se \
    to PATH.ne \
  close
line fill 0xCCEEFF behind QUERY \
  from QUERY.nw \
    to QUERY.sw \
    to QB.n \
    to QUERY.se \
    to QUERY.ne \
  close
</verbatim>

<h2>Additional CGI Script Options</h2>

The CGI script can have additional options used to fine-tune
Fossil's behavior.  See the [./cgi.wiki|CGI script documentation]
for details.

<h2>Additional Observations</h2>
<ol type="I">
<li><p>
Fossil does not distinguish between the various HTTP methods (GET, PUT,
DELETE, etc).  Fossil figures out what it needs to do purely from the
webpage term of the URI.</p></li>
<li><p>
Fossil does not distinguish between query parameters that are part of the
URI, application/x-www-form-urlencoded or multipart/form-data encoded
parameter that are part of the POST content, and cookies.  Each information
source is seen as a space of key/value pairs which are loaded into an
internal property hash table.  The code that runs to generate the reply
can then reference various properties values.
Fossil does not care where the value of each property comes from (POST
content, cookies, or query parameters) only that the property exists
and has a value.</p></li>
<li><p>
The "[/help?cmd=ui|fossil ui]" and "[/help?cmd=server|fossil server]" commands
are implemented using a simple built-in web server that accepts incoming HTTP
requests, translates each request into a CGI invocation, then creates a
separate child Fossil process to handle each request.  In other words, CGI
is used internally to implement "fossil ui/server".
<br><br>
SCGI is processed using the same built-in web server, just modified
to parse SCGI requests instead of HTTP requests.  Each SCGI request is
converted into CGI, then Fossil creates a separate child Fossil
process to handle each CGI request.</p></li>
<li><p>
Fossil is itself often launched using CGI.  But Fossil can also then
turn around and launch [./serverext.wiki|sub-CGI scripts to implement
extensions].</p></li>
</ol>
Added www/aboutdownload.wiki.





































































































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<title>How The Fossil Download Page Works</title>

<h2>1.0 Overview</h2>

The [/uv/download.html|Download] page for the Fossil self-hosting
repository is implemented using [./unvers.wiki|unversioned files].
The "download.html" screen itself, and the various build products
are all stored as unversioned content.  The download.html page
uses XMLHttpRequest() to retrieve the [/help?cmd=/juvlist|/juvlist] webpage
for a list of all unversioned files.  Javascript in the
[/uv/download.js?mimetype=text/plain|download.js] file (which is
sourced by "download.html") then figures out which unversioned files are
build products and paints appropriate icons on the displayed
download page.

Except, the "Source Tarball" download products are not stored as
unversioned files.  They are computed on-demand by the
[/help?cmd=/tarball|/tarball web page].

When a new version is generated, the developers use the
[/help?cmd=uv|fossil uv edit] command to make minor changes
to the "[/uv/download.js?mimetype=text/plain|download.js]"
file so that it knows about the
new version number.  Then the developers run
the [/help?cmd=uv|fossil uv add] command for each
build product.  Finally, the
[/help?cmd=uv|fossil uv sync] command is run to push all
the content up to servers.  All
[./selfhost.wiki|three self-hosting repositories] for Fossil
are updated automatically.

<h2>2.0 Details</h2>

The current text of the "download.html" and "download.js" files can
be seen at:

   *   [/uv/download.html?mimetype=text/plain]
   *   [/uv/download.js?mimetype=text/plain]

Notice how the hyperlinks above use the "mimetype=text/plain"
query parameter in order to display the file as plain text
instead of the usual HTML or Javascript.

The default mimetype for "download.html" is
text/html.  But because the entire page is enclosed within

<verbatim><div class='fossil-doc' data-title='Download Page'>...</div></verbatim>

Fossil knows to add its standard header and footer information to the
document, making it look just like any other page.  See
"[./embeddeddoc.wiki|embedded documentation]" for further details on
how this &lt;div class='fossil-doc'&gt; markup works.

With each new release, the "releases" variable in the javascript on
the [/uv/download.js?mimetype=text/plain|download.js] page is
edited (using "[/help?cmd=uv|fossil uv edit download.js]") to add
details of the release.

When the JavaScript in the "download.js" file runs, it requests
a listing of all unversioned content using the /juvlist URL.
([/juvlist|sample /juvlist output]).  The content of the download page is
constructed by matching unversioned files against regular expressions
in the "releases" variable.

Build products need to be constructed on different machines.  The precompiled
binary for Linux is compiled on Linux, the precompiled binary for Windows
is compiled on Windows11, and so forth.  After a new release is tagged,
the release manager goes around to each of the target platforms, checks
out the release and compiles it, then runs
[/help?cmd=uv|fossil uv add] for the build product followed by
[/help?cmd=uv|fossil uv sync] to push the new build product to the
[./selfhost.wiki|various servers].  This process is repeated for
each build product.

When older builds are retired from the download page, the
[/uv/download.js?mimetype=text/plain|download.js] page is again
edited to remove the corresponding entry from the "release" variable
and the edit is synced using
[/help?cmd=uv|fossil uv sync].  This causes the build products to
disappear from the download page immediately.  But those build products
are still taking up space in the unversioned content table of the
server repository.  To purge the obsolete build products, one or
more [/help?cmd=uv|fossil uv rm] commands are run, followed by
another [/help?cmd=uv|fossil uv sync].  It is important to purge
obsolete build products since they take up a lot of space.
At [/repo-tabsize] you can see that the unversioned table takes up
a substantial fraction of the repository.

<h2>3.0 Security</h2>

Only users with the [/setup_ulist_notes|"y" permission] are allowed
to push unversioned content up to the servers.  Having the ability
to push check-ins (the [/setup_ulist_notes|"i" permission]) is not
sufficient.

On the Fossil project there are (as of 2023-07-31) 71 people who have
check-in privileges.  But only the project lead can push unversioned
content and thus change the build products on the download page.
Minimizing the number of people who can change the build products
helps to ensure that rogue binaries do not slip onto the download page
unnoticed.
Added www/adding_code.wiki.




































































































































































































































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<title>Adding Features To Fossil</title>

<h2>1.0 Introduction</h2>

This article provides a brief overview of how to write new C-code code that
extends or enhances the core Fossil binary.

New features can be added to a Fossil server using
[./serverext.wiki|external CGI programs],
but that is not what this article is about.
This article focuses on how to make changes
to Fossil itself.

<h2>2.0 Programming Language</h2>

Fossil is written in C-89.  There are specific [./style.wiki | style guidelines]
that are required for any new code that will be accepted into the Fossil core.
But, of course, if you are writing an extension just for yourself, you can
use any programming style you want.

The source code for Fossil is not sent directly into the C compiler.
There are three separate code [./makefile.wiki#preprocessing|preprocessors]
that run over the code first.

  1.  The <b>mkindex</b> preprocessor scans all regular source files looking
      for special comments that contain "help" text and which identify routines
      that implement specific commands or which generate particular web pages.

  2.  The <b>makeheaders</b> preprocessor generates all the ".h" files
      automatically.  Fossil programmers write ".c" files only and let the
      makeheaders preprocessor create the ".h" files.

  3.  The <b>translate</b> preprocessor converts source code lines that
      begin with "@" into string literals, or into print statements that
      generate web page output, depending on context.

The [./makefile.wiki|Makefile] for Fossil takes care of running these
preprocessors with all the right arguments and in the right order.  So it is
not necessary to understand the details of how these preprocessors work.
(Though, the sources for all three preprocessors are included in the source
tree and are well commented, if you want to dig deeper.)  It is only necessary
to know that these preprocessors exist and hence will affect the way you
write code.

<h2>3.0 Adding New Source Code Files</h2>

New source code files are added in the "src/" subdirectory of the Fossil
source tree.  Suppose one wants to add a new source code file named
"xyzzy.c".  The first step is to add this file to the various makefiles.
Do so by editing the file tools/makemake.tcl and adding "xyzzy" (without
the final ".c") to the list of source modules at the top of that script.
Save the result and then run the makemake.tcl script using a TCL
interpreter.  The command to run the makemake.tcl script is:

<verbatim>
tclsh makemake.tcl
</verbatim>

The working directory must be src/ when the command above is run.
Note that TCL is not normally required to build Fossil, but
it is required for this step.  If you do not have a TCL interpreter on
your system already, they are easy to install.  A popular choice is the
[http://www.activestate.com/activetcl|Active Tcl] installation from
ActiveState.

After the makefiles have been updated, create the xyzzy.c source file
from the following template:

<verbatim>
/*
** Copyright boilerplate goes here.
*****************************************************
** High-level description of what this module goes
** here.
*/
#include "config.h"
#include "xyzzy.h"

#if INTERFACE
/* Exported object (structure) definitions or #defines
** go here */
#endif /* INTERFACE */

/* New code goes here */
</verbatim>

Note in particular the <b>#include "xyzzy.h"</b> line near the top.
The "xyzzy.h" file is automatically generated by makeheaders.  Every
normal Fossil source file must have a #include at the top that imports
its private header file.  (Some source files, such as "sqlite3.c" are
exceptions to this rule.  Don't worry about those exceptions.  The
files you write will require this #include line.)

The "#if INTERFACE ... #endif" section is optional and is only needed
if there are structure definitions or typedefs or macros that need to
be used by other source code files.  The makeheaders preprocessor
uses definitions in the INTERFACE section to help it generate header
files.  See [../tools/makeheaders.html | makeheaders.html] for additional
information.

After creating a template file such as shown above, and after updating
the makefiles, you should be able to recompile Fossil and have it include
your new source file, even before your source file contains any code.
It is recommended that you try this.

Be sure to [/help/add|fossil add] your new source file to the self-hosting
Fossil repository and then [/help/commit|commit] your changes!

<h2 id="newcmd">4.0 Creating A New Command</h2>

By "commands" we mean the keywords that follow "fossil" when invoking
Fossil from the command-line.  So, for example, in

<verbatim>
fossil diff xyzzy.c
</verbatim>

The "command" is "diff".  Commands may optionally be followed by
arguments and/or options.  To create new commands in Fossil, add code
(either to an existing source file, or to a new source file created as
described above) according to the following template:

<verbatim>
/*
** COMMAND: xyzzy
**
** Help text goes here.  Backslashes must be escaped.
*/
void xyzzy_cmd(void){
  /* Implement the command here */
  fossil_print("Hello, World!\n");
}
</verbatim>

The example above creates a new command named "xyzzy" that prints the
message "Hello, World!" on the console.  This command is a normal command
that will show up in the list of command from [/help/help|fossil help].
If you add an asterisk to the end of the command name, like this:

<verbatim>
** COMMAND: xyzzy*
</verbatim>

Then the command will only show up if you add the "--all" option to
[/help/help|fossil help].  Or, if the command name starts with
"test" then the command will be considered experimental and will only
show up when the --test option is used with [/help/help|fossil help].

The example above is a fully functioning Fossil command.  You can add
the text shown to an existing Fossil source file, recompiling then test
it out by typing:

<verbatim>
./fossil xyzzy
./fossil help xyzzy
./fossil xyzzy --help
</verbatim>

The name of the C function that implements the command can be anything
you like (as long as it does not collide with some other symbol in the
Fossil code) but it is traditional to name the function
"<i>commandname</i><b>_cmd</b>", as is done in the example.

You could also use "printf()" instead of "fossil_print()" to generate
the output text, if desired.  But "fossil_print()" is recommended as
it has extra logic to insert \r characters at the right times on
Windows systems.

Once you have the command running, you can then start adding code to
make it do useful things.  There are lots of utility functions in
Fossil for parsing command-line options and for
opening and accessing and manipulating the repository and
the working check-out.  Study implementations of existing commands
to get an idea of how things are done.  You can easily find the implementations
of existing commands by searching for "COMMAND: <i>name</i>" in the
files of the "src/" directory.

<h2 id="newpage">5.0 Creating A New Web Page</h2>

As with commands, new webpages can be added simply by inserting a function
that generates the webpage together with a special header comment.  A
template follows:

<verbatim>
/*
** WEBPAGE: helloworld
*/
void helloworld_page(void){
  style_header("Hello World!");
  @ <p>Hello, World!</p>
  style_footer();
}
</verbatim>

Add the code above to a new or existing Fossil source code file, then
recompile fossil and run [/help/ui|fossil ui] then enter
"http://localhost:8080/helloworld" in your web browser and the routine
above will generate a web page that says "Hello World."
It really is that simple.

The special "WEBPAGE:" comment is picked up by the "mkindex" preprocessor
and used to generate a table that maps the "helloworld" webpage name
into a pointer to the "helloworld_page()" function.  The function that
implements a webpage can be named anything you like (as long as it does
not collide with another name) but the traditional name is
"<i>pagename</i><b>_page</b>".

HTML pages begin with a call to style_header() and end with the call to
style_footer().  Content is generated by the "@" lines that are translated
(by the "translate" preprocessor) into printf-like code that generates the
content of the webpage.  Different techniques are used to generate
non-HTML content.  In the unlikely event that you need to generate
non-HTML content, look at existing webpage implementations
(ex: "logo" or "style.css") to see how that is done.

There are lots of other things that a real web-page implementation will
need to do, such as verifying user credentials, parsing query parameters,
and interacting with the repository.  But now that you have the general
idea of how webpages are implemented, you can look at the many other
webpage implementations already built into Fossil to see how all that
works.

<h2>6.0 See Also</h2>

  *  [./makefile.wiki|The Fossil Build Process]
  *  [./tech_overview.wiki|A Technical Overview Of Fossil]
  *  [./contribute.wiki|Contributing To The Fossil Project]
  *  [./serverext.wiki|Adding CGI Extensions To A Fossil Server]
Added www/alerts.md.























































































































































































































































































































































































































































































































































































































































































































































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# Email Alerts

## Overview

Beginning with version 2.7, Fossil can send email messages to
subscribers to alert them to changes in the repository:

  *  New [checkins](/help?cmd=ci)
  *  [Ticket](./tickets.wiki) changes
  *  [Wiki](./wikitheory.wiki) page changes
  *  New and edited [forum](./forum.wiki) posts
  *  Announcements

Subscribers can elect to receive emails as soon as these events happen,
or they can receive a daily digest of the events instead.

Email alerts are sent by a [Fossil server](./server/), which must be
[set up](#quick) by the Fossil administrator to send email.

Email alerts do not currently work if you are only using Fossil from the
command line.

A bit of terminology: Fossil uses the terms "email alerts" and
"notifications" interchangeably. We stick to the former term in this
document except when referring to parts of the Fossil UI still using the
latter term.


## Setup Prerequisites

Much of this document describes how to set up Fossil's email alert
system. To follow this guide, you will need a Fossil UI browser window
open to the [Admin → Notification](/setup_notification) Fossil UI screen
on the Fossil server that will be sending these email alerts, logged
in as a user with [**Admin** capability](./caps/ref.html#a). It is not possible to work on a
clone of the server's repository and push the configuration changes up
to that repo as an Admin user, [on purpose](#backup).

**Important:** Do not confuse that screen with Admin → Email-Server,
which sets up a different subsystem within Fossil. That feature is
related to this document's topic, but it is currently incomplete, so we
do not cover it at this time.

<a id="cd"></a>
You will also need a CLI window open with its working directory changed
to a checkout directory of the Fossil repository you are setting up to
send email.  If you don't `cd` to such a checkout directory first,
you'll need to add `-R /path/to/repo.fossil` to each `fossil` command
below to tell Fossil which repository you mean it to apply the command
to.

There are other prerequisites for email service, but since they vary
depending on the configuration you choose, we'll cover these inline
below.


<a id="quick"></a>
## Quick Email Service Setup

If you've already got a working Postfix, Exim, or Sendmail server on the
machine running your Fossil instance(s), and you aren't using Fossil's
`chroot` feature to wall Fossil off from the rest of the machine, it's
fairly simple to set up email alerts.

(Otherwise, skip [ahead](#advanced) to the sections on advanced email
service setup.)

This is our "quick setup" option even though setting up an SMTP mail
server is not trivial, because there are many other reasons to have such
a server set up already: internal project email service, `cron`
notifications, server status monitoring notifications...

With that out of the way, the Fossil-specific steps are easy:

1.  Go to [Admin → Notification](/setup_notification) and fill out all
    of the **Required** fields:

    * **Canonical server URL** — Use the suggested URL

    * **"From" email address** — `forum-bounces@example.com` is
      traditional, but suit yourself

    * **Repository nickname** — See the suggested examples on the web page.

2.  Set "Email Send Method" to "Pipe to a command"

3.  Set the "Administrator email address" to a suitable valid email
    address on that machine.  It could be the same value you used for
    the "From" address above, or it could be a different value like
    `admin@example.com`.

Save your changes.

At the command line, say

    $ fossil set email-send-command

If that gives a blank value instead of `sendmail -ti`, say

    $ fossil set email-send-command "sendmail -ti"

to force the setting. That works around a [known
bug](https://fossil-scm.org/forum/forumpost/840b676410) which may be
squished by the time you read this.

If you're running Postfix or Exim, you might think that command is
wrong, since you aren't running Sendmail. These mail servers provide a
`sendmail` command for compatibility with software like Fossil that has
no good reason to care exactly which SMTP server implementation is
running at a given site. There may be other SMTP servers that also
provide a compatible `sendmail` command, in which case they may work
with Fossil using the same steps as above.

<a id="status"></a>
If you reload the Admin → Notification page, the Status section at the
top should show:

    Outgoing Email: Piped to command "sendmail -ti"
    Pending Alerts: 0 normal, 0 digest
    Subscribers:    0 active, 0 total

Before you move on to the next section, you might like to read up on
[some subtleties](#pipe) with the "pipe to a command" method that we did
not cover above.


<a id="usage"></a>
## Usage and Testing

Now that email service from Fossil is set up, you can test it and begin
using it.


<a id="sub" name="subscribe"></a>
### Subscribing to Alerts

In the Status output above, we saw that there are no subscribers, so the
next step is to add the first one.

Go to the `/subscribe` page on your Fossil instance to sign up for email
alerts.  At the very least, you will need to sign up for "Forum Posts"
and "Announcements" to complete the testing steps below.

If you're logged in with a Fossil repository user account and put the
same user name and email address into this forum as you used for your
user information under Admin → Users, Fossil will simply tie your alert
preferences to your login record, and the email address in your user's
Contact Info field will be considered already-verified.  Otherwise,
Fossil will create an alert-only record, and you will have to verify the
email address before Fossil will send alerts to it.

This shows a key aspect of the way Fossil's email alerts system works,
by the way: a user can be signed up for email alerts without having a
full-fledged Fossil user account. Only when both user names are the same
are the two records tied together under the hood. For more on this, see
[Users vs Subscribers below](#uvs).

If you are seeing the following complaint from Fossil:

> Use a different login with greater privilege than FOO to access /subscribe

...then the repository's administrator forgot to give the
[**EmailAlert** capability][cap7]
to that user or to a user category that the user is a member of.

After a subscriber signs up for alerts for the first time, a single
verification email is sent to that subscriber's given email address.
The new subscriber must click a link in that email in order to activate
the subscription.

Subscription verification emails are only sent once.  This is a defense
against malicious robots that try to harass innocent Internet users by
having subscription pages send multiple verification emails.  If the
initial subscription verification does not go through correctly, an
administrator must [intervene](#admin) to reset the subscription.

Every subscriber-only email address has a [long random hexadecimal
security code](#scode) that serves in place of a password.  All email
alerts contain a link in their footer back to the Fossil server,
incorporating this security code, which allows the subscriber to adjust
their subscription options.  If a user doesn't have any of those emails,
they can request a link via email by visiting the `/alerts` or
`/unsubscribe` page on the repository.

Those with Fossil repository logins can adjust their email alert
settings by visiting the `/alerts` page on the repository.  With the
default skin, you can get there by clicking the "Logout" link in the
upper right corner of any Fossil UI page then clicking the "Email
Alerts" link.  That link is also available via the Sitemap (`/sitemap`)
and via the default skin's hamburger menu (&#9776;).

[cap7]: ./caps/ref.html#7


<a id="unsub" name="unsubscribe"></a>
### Unsubscribing

To unsubscribe from alerts, visit the `/alerts` page on the repository,
click the "Unsubscribe" button, then check the "Unsubscribe" checkbox to
verify your action and press the "Unsubscribe" button a second time.

This interlock is intended to prevent accidental unsubscription.


<a id="test"></a>
### Test Email Service

The easiest way to test email sending from Fossil is via the "[Send
Announcement](/announce)" link at the top of the "Email Notification
Setup" page.  Put your email address in the "To:" line and a test
message below, then press "Send Message" to verify that outgoing email
is working.

Another method is from the command line:

    $ fossil alerts test-message you@example.com --body README.md --subject Test

That should send you an email with "Test" in the subject line and the
contents of your project's `README.md` file in the body.

That command assumes that your project contains a "readme" file, but of
course it does, because you have followed the [Programming Style Guide
Checklist][cl], right? Right.

[cl]: https://sendgrid.com/blog/programming-style-guide-checklist/


<a id="cap7" name="ucap"></a>
### User Capabilities

Once email alerts are working, you may need to [adjust the default user
capabilities](./caps/) to give "[Email Alerts][cap7]" capability to any
[user category](./caps/#ucat) or [individual user](./caps/#ucap) that
needs to use the subscription setup pages, `/subscribe` and `/alerts`.
[**Admin**][capa] and [**Setup**][caps] users always have this
capability.

To allow any passer-by on the Internet to subscribe, give the "Email
Alerts" capability to the "nobody" user category.  To require that a
person solve a simple CAPTCHA first, give that capability to the
"anonymous" user category instead.

[capa]: ./caps/ref.html#a
[caps]: ./caps/ref.html#s


<a id="first" name="frist"></a>
### First Post

I suggest taking the time to compose a suitable introductory message
especially for your project's forum, one which a new user would find
helpful.

Wait a few seconds, and you should receive an email alert with the
post's subject and body text in the email.


<a id="trouble"></a>
### Troubleshooting

If email alerts aren't working, there are several useful commands you
can give to figure out why.

(Be sure to [`cd` into a repo checkout directory](#cd) first!)

    $ fossil alerts status

This should give much the same information as you saw [above](#status).
One difference is that, since you've created a forum post, the
`pending-alerts` value should only be zero if you did in fact get the
requested email alert. If it's zero, check your mailer's spam folder. If
it's nonzero, continue with these troubleshooting steps.

    $ fossil backoffice

That forces Fossil to run its ["back office" process](./backoffice.md).
Its only purpose at the time of this writing is to push out alert
emails, but it might do other things later. Sometimes it can get stuck
and needs to be kicked. For that reason, you might want to set up a
crontab entry to make sure it runs occasionally.

    $ fossil alerts send

This should also kick off the backoffice processing, if there are any
pending alerts to send out.

    $ fossil alert pending

Show any pending alerts. The number of lines output here should equal
the [status output above](#status).

    $ fossil test-add-alerts f5900
    $ fossil alert send

Manually create an email alert and push it out immediately.

The `f` in the first command's final parameter means you're scheduling a
"forum" alert. The integer is the ID of a forum post, which you can find
by visiting `/timeline?showid` on your Fossil instance.

The second command above is necessary because the `test-add-alerts`
command doesn't kick off a backoffice run.

    $ fossil ale send

This only does the same thing as the final command above, rather than
send you an ale, as you might be hoping. Sorry.


<a id="advanced"></a>
## Advanced Email Setups

Fossil offers several methods of sending email:

  1.  Pipe the email message text into a command.
  2.  Store email messages as entries in an SQLite database.
  3.  Store email messages as individual files in a directory.
  4.  Send emails to an SMTP relay.
  5.  Send emails directly to the recipients via SMTP.

This wide range of options allows Fossil to talk to pretty much any
SMTP setup.

The first four options let Fossil delegate email handling to an existing
[MTA] so that Fossil does not need to implement the [roughly two
dozen][mprotos] separate [RFCs][rfcs] required in order to properly
support SMTP email in this complex world we've built.  As well, this
design choice means you do not need to do duplicate configuration, such
as to point Fossil at your server's TLS certificate in order to support
users behind mail servers that require STARTTLS encryption.

[mprotos]: http://sqlite.1065341.n5.nabble.com/Many-ML-emails-going-to-GMail-s-SPAM-tp98685p98722.html
[rfcs]:    https://en.wikipedia.org/wiki/Request_for_Comments


<a id="pipe"></a>
### Method 1: Pipe to a Command

This is our ["quick setup" option](#quick) above, but there are some
details we ignored which we'll cover now.

Fossil pipes the email message in [RFC 822 format][rfc822] to the
standard input of the command you gave as the "Email Send Method",
defaulting to `sendmail -ti`. This constitutes a protocol between Fossil
and the SMTP [message transfer agent (MTA)][MTA]. Any other MTA which
speaks the same protocol can be used in place of the most common
options: Sendmail, Exim, and Postfix.

The `-t` option tells the command to expect the list of email recipients
in a `To` header in the RFC 822 message presented on its standard input.
Without this option, the `sendmail` command expects to receive the
recipient list on the command line, but that's not possible with the
current design of this email sending method. Therefore, if you're
attempting to use a less common MTA which cannot parse the recipient
list from the `To` header in the email message, you might need to look
for a different MTA.

The `-i` option is only needed for MTAs that take a dot/period at the
beginning of a line of standard input text as "end of message." Fossil
doesn't attempt to escape such dots, so if the line wrapping happens to
occur such that a dot or period in an alert message is at the beginning
of a line, you'll get a truncated email message without this option.
Statistically, this will happen about once every 70 or so messages, so
it is important to give this option if your MTA treats leading dots on a
line this way.

<a id="msmtp"></a>
The [`msmtp`][msmtp] SMTP client is compatible with this
protocol if you give it the `-t` option. It’s a useful option on a server
hosting a Fossil repository which doesn't otherwise require a separate
SMTP server for other purposes, such as because you’ve got a separate
provider for your email and merely need a way to let Fossil feed
messages into it.

It is probably also possible to configure [`procmail`][pmdoc] to work
with this protocol. If you know how to do it, a patch to this document
or a how-to on [the Fossil forum][ff] would be appreciated.

[ff]:     https://fossil-scm.org/forum/
[msmtp]:  https://marlam.de/msmtp/
[MTA]:    https://en.wikipedia.org/wiki/Message_transfer_agent
[pmdoc]:  http://pm-doc.sourceforge.net/doc/
[rfc822]: https://www.w3.org/Protocols/rfc822/


<a id="db"></a>
### Method 2: Store in a Database

The self-hosting Fossil repository at <https://fossil-scm.org/>
currently uses this method rather than [the pipe method](#pipe) because
it is running inside of a restrictive [chroot jail][cj] which is unable
to hand off messages to the local MTA directly.

When you configure a Fossil server this way, it adds outgoing email
messages to an SQLite database file.  A separate daemon process can then
extract those messages for further disposition.

Fossil includes a copy of [the daemon](/file/tools/email-sender.tcl)
used on `fossil-scm.org`: it is just a short Tcl script that
continuously monitors this database for new messages and hands any that
it finds off to a local MTA using the same [pipe to MTA protocol](#pipe)
as above.

In this way, outbound email alerts escape the chroot jail without
requiring that we insert a separate MTA configuration inside that jail.
We only need to arrange that the same SQLite DB file be visible both
inside and outside the chroot jail, which we do by naming the database
file in the "Store Emails In This Database" setting under Admin →
Notification.  The Tcl script has this path hard-coded as
`/home/www/fossil/emailqueue.db`, but you will probably need to adjust
that for your local purposes.

This method may work with other similar technologies besides `chroot`:
Docker containers, LXC containers, BSD jails, Solaris zones, etc.

With suitable file share mappings, this method may even work with
virtual machine or distributed computing setups where the MTA and Fossil
servers are not on the same machine, though beware the [risk of DB
corruption][rdbc] if used with a file sharing technology that doesn't
use proper file locking.

You can start this Tcl script as a daemon automatically on most Unix and
Unix-like systems by adding the following line to the `/etc/rc.local`
file of the server that hosts the repository sending email alerts:

    /usr/bin/tclsh /home/www/fossil/email-sender.tcl &

[cj]:   https://en.wikipedia.org/wiki/Chroot
[rdbc]: https://www.sqlite.org/howtocorrupt.html#_filesystems_with_broken_or_missing_lock_implementations


<a id="dir"></a>
### Method 3: Store in a Directory

This method is functionally very similar to [the DB method](#db),
differing only in that messages are written to a directory in the
filesystem.  You should therefore read that section and make the minor
adjustments required by the storage method.

This method may work over a file sharing mechanism that doesn't do file
locking properly, as long as the reading process is somehow restricted
from reading a message file as it's being written.

It might be useful in testing and debugging to temporarily switch to
this method, since you can easily read the generated email messages
without needing to involve an [MTA].


<a id="relay"></a>
### Method 4: SMTP Relay

In this configuration, the Fossil server contacts an open SMTP relay and
sends the messages to it. This method is only appropriate when:

1. You have a local MTA that doesn't accept [the pipe
   protocol](#pipe).

2. The MTA is willing to accept anonymous submissions, since Fossil
   currently has no way to authenticate itself to the MTA.  This is [an
   unsafe configuration][omr] in most cases, but some SMTP servers make
   an exception for connections coming from a `localhost` or LAN
   address, choosing to accept such submissions as inherently safe.

If you have a local MTA meeting criterion #1 but not #2, we'd suggest
using a more powerful SMTP client such as [msmtp](#msmtp) along with one
of the other methods above.

[omr]: https://en.wikipedia.org/wiki/Open_mail_relay


<a id="direct"></a>
### Method 5: Direct SMTP Send

As of Fossil 2.7, the code to support this method is incomplete, so you
cannot currently select it as an option in Admin → Notification.


<a id="uvs"></a>
## Users vs Subscribers

Fossil makes a distinction between "users" and "subscribers".  A user is
someone with a username and password: that is, someone who can log into
the Fossil repository.  A subscriber is someone who receives email
alerts.  Users can also be subscribers and subscribers can be users, but
that does not have to be the case.  It is possible to be a user without
being a subscriber and to be a subscriber without being a user.

In the repository database file, users are tracked with the `user` table
and subscribers are tracked via the `subscriber` table.


<a id="admin"></a>
## Administrator Activities

The "[List Subscribers](/subscribers)" button at the top of the Admin →
Notification screen gives a list of subscribers, which gives a Fossil
server administrator a lot of power over those subscriptions.

Clicking an email address in this subscriber list opens the same
`/alerts` page that the user can see for their own subscription, but
with more information and functionality than normal users get:

*  Subscription creation and modification timestamps.

*  The IP address the user had when they last made a change via either
   `/subscribe` or `/alert`.

*  The user's login name, if they are not [a mere subscriber](#uvs).  A
   Fossil Admin user is allowed to modify this, either to tie a
   subscription-only record to an existing Fossil user account or to
   break that tie.

*  The "Do not call" checkbox allows a Fossil Admin user to mark a given
   email address so that Fossil never sends email to that address.  This
   is distinct from unsubscribing that email address because it prevents
   Fossil from accepting a new subscription for that address.

*  The Verified checkbox is initially unchecked for subscriber-only
   email addresses until the user clicks the link in the verification
   email. This checkbox lets the Fossil Admin user manually verify the
   user, such as in the case where the verification email message got
   lost.  Unchecking this box does not cause another verification email
   to be sent.

This screen also allows a Fossil Admin user to perform other activities
on behalf of a subscriber which they could do themselves, such as to
[unsubscribe](#unsub) them.


<a id="backup"></a>
## Cloning, Syncing, and Backups

That’s [covered elsewhere](./backup.md#alerts).


<a id="pages" name="commands"></a>
## Controlling the Email Alert System

This section collects the list of Fossil UI pages and CLI commands that
control the email alert system, some of which have not been mentioned so
far:

Commands:

   *  The [`alerts`](/help?cmd=alerts) command
   *  The [`test-alert`](/help?cmd=test-alert) command
   *  The [`test-add-alerts`](/help?cmd=test-add-alerts) command

Web pages available to users and subscribers:

   *  The [`/subscribe`](/help?cmd=/subscribe) page
   *  The [`/alerts`](/help?cmd=/alerts) page
   *  The [`/unsubscribe`](/help?cmd=/unsubscribe) page
   *  The [`/renew`](/help?cmd=/renew) page
   *  The [`/contact_admin`](/help?cmd=/contact_admin) page

Administrator-only web pages:

   *  The [`/setup_notification`](/help?cmd=/setup_notification) page
   *  The [`/subscribers`](/help?cmd=/subscribers) page


<a id="design"></a>
## Design of Email Alerts

This section describes the low-level design of the email alert system in
Fossil.  This expands on the high-level administration focused material
above with minimal repetition.

This section assumes expert-level systems knowledge. If the material
above sufficed for your purposes, feel free to skip this section, which
runs to the end of this document.


<a id="datades"></a>
### Data Design

There are two new tables in the repository database, starting with
Fossil 2.7.  These tables are not created in new repositories by
default.  The tables only come into existence as needed when email
alerts are configured and used.

  *  <b>SUBSCRIBER</b> →
     The subscriber table records the email address for people who
     want to receive email notifications.  Each subscriber has a
     `subscriberCode` which is a random 32-byte blob that uniquely
     identifies the subscriber.  There are also fields to indicate
     what kinds of notifications the subscriber wishes to receive,
     whether or not the email address of the subscriber has been
     verified, etc.

  *  <b>PENDING\_ALERT</b> →
     The PENDING\_ALERT table contains records that define events
     about which alert emails might need to be sent.
     A pending\_alert always refers to an entry in the
     EVENT table.  The EVENT table is part of the standard schema
     and records timeline entries.  In other words, there is one
     row in the EVENT table for each possible timeline entry.  The
     PENDING\_ALERT table refers to EVENT table entries for which
     we might need to send alert emails.

As pointed out above, ["subscribers" are distinct from "users"](#uvs).
The SUBSCRIBER.SUNAME field is the optional linkage between users and
subscribers.


<a id="stdout"></a>
### The "stdout" Method

The [list of mail sending methods](#advanced) above left out an
internal-only method called "stdout" which simply writes the text of the
email message on standard output.  The "stdout" method is used for
testing and debugging.  If you need something similar and can't modify
your local Fossil instance to use this method, you might temporarily
switch to [the "dir" method](#dir) instead.


<a id="msgfmt"></a>
### Message Format

The email messages generated by Fossil have a [well-formed
header][rfc822].  The downstream processing is expected to extract the
"To:", "From:", "Subject:" and whatever other attributes it needs from
the email header text.

These emails use the `text/plain` MIME type with the UTF-8 character
set.  We currently use a transfer encoding of `quoted-printable`, but
there is commented-out code in Fossil to switch to `base64` encoding,
which Fossil used in the early days leading up to the 2.7 release.

If you switch Fossil back to `base64` mode, you may want to build a
utility program that ships in the Fossil source tree named
["tools/decode-email.c"](/file/tools/decode-email.c) which can decode
these messages into a human-readable format.


<a id="inbound" name="bounces"></a>
### Dealing with Inbound Email

Inbound email messages — for example, bounces from failed alert emails —
should be relayed to the `fossil email inbound` command.  That command
is currently a no-op place-holder.  At some point, we will need to
design and write a bounce-message processing system for Fossil.


<a id="password" name="scode" name="verification"></a>
### Passwords vs Subscriber Codes

When anonymous passers-by on the Internet sign up for email alerts,
their email address must first be verified.  An email message is sent to
the address supplied inviting the user to click on a link.  The link
includes a pseudorandom 128-bit blob encoded as 32 hexadecimal digits,
which serves in place of a password for that email address.  (This is
stored in the database as `subscriber.subscriberCode`.) If anyone visits
the link, the email address is verified.

Knowledge of the `subscriberCode` is sufficient to control a
subscription.

Because this code is included in plain text in email alert messages, it
is not as secure as a separate password, but it has several virtues:

*   It is easier for the average subscriber to deal with in that they
    don't have to come up with yet another password and store it safely.

*   If the `subscriberCode` is stolen, the worst that can happen is that
    the thief can change that email address's subscription settings.
    Contrast a password which may be shared with other services, which
    then compromises those other services.

*   No PII other than the subscriber's email address is available to an
    attacker with the `subscriberCode`.  Nor can knowledge of the
    `subscriberCode` lead to an email flood or other annoyance attack, as
    far as I can see.

If the `subscriberCodes` for a Fossil repository are ever compromised,
new ones can be generated as follows:

    UPDATE subscriber SET subscriberCode=randomblob(32);

Since this then affects all new email alerts going out from Fossil, your
end users may never even realize that they're getting new codes, as long
as they don't click on the URLs in the footer of old alert messages.

With that in mind, a Fossil server administrator could choose to
randomize the `subscriberCodes` periodically, such as just before the
daily digest emails are sent out each day.

**Important:** All of the above is distinct from the passwords for users
with a Fossil repository login. Such users also have subscriber codes,
but those codes can only be used to modify the user's email alert
settings. That code cannot allow a user to log into the user's Fossil
repository account.


<a id="processing"></a>
### Internal Processing Flow

Almost all of the email alert code is found in the
[`src/alerts.c`](/file/src/alerts.c) source file.

When email alerts are enabled, a trigger is created in the schema
(`email_trigger1`) that adds a new entry to the `PENDING_ALERT` table
every time a row is added to the `EVENT` table.  During a 
`fossil rebuild`, the `EVENT` table is rebuilt from scratch; since we do not
want users to get alerts for every historical check-in, the trigger is
disabled during `rebuild`.

Email alerts are sent out by the `alert_send_alerts()` function, which
is normally called automatically due to the `email-autoexec` setting,
which defaults to enabled. If that setting is disabled or if the user
simply wants to force email alerts to be sent immediately, they can give
a `fossil alert send` command, such as via a `cron` script.  Each time
this function is called, the alert messages are moved further down the
chain, so you cannot cause duplicate alerts by calling it too often.

Digests are handled by recording the time of the last digest in the
`email-last-digest` setting, and only sending a new digest if the
current time is one day or later after the last digest.

Individual emails are sent to each subscriber.  I (drh) ran tests and
found that I could send about 1200 emails/second, which is fast enough
that I do not need to resort to trying to notify multiple subscribers
with a single email.  Because each subscriber gets a separate email, the
system can include information in the email that is unique to the
subscriber, such as a link to the page to edit their subscription.  That
link includes the `subscriberCode`.
Added www/antibot.wiki.



















































































































































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<title>Defense Against Robots</title>

A typical Fossil website can have millions of pages, and many of
those pages (for example diffs and annotations and tarballs) can
be expensive to compute.
If a robot walks a Fossil-generated website,
it can present a crippling bandwidth and CPU load.

A Fossil website is intended to be used
interactively by humans, not walked by robots.  This article
describes the techniques used by Fossil to try to welcome human
users while keeping out robots.

<h2>The Hyperlink User Capability</h2>

Every Fossil web session has a "user".  For random passers-by on the internet
(and for robots) that user is "nobody".  The "anonymous" user is also
available for humans who do not wish to identify themselves.  The difference
is that "anonymous" requires a login (using a password supplied via
a CAPTCHA) whereas "nobody" does not require a login.
The site administrator can also create logins with
passwords for specific individuals.

Users without the <b>[./caps/ref.html#h | Hyperlink]</b> capability
do not see most Fossil-generated hyperlinks. This is
a simple defense against robots, since [./caps/#ucat | the "nobody"
user category] does not have this capability by default.
Users must log in (perhaps as
"anonymous") before they can see any of the hyperlinks.  A robot
that cannot log into your Fossil repository will be unable to walk
its historical check-ins, create diffs between versions, pull zip
archives, etc. by visiting links, because there are no links.

A text message appears at the top of each page in this situation to
invite humans to log in as anonymous in order to activate hyperlinks.

But requiring a login, even an anonymous login, can be annoying.
Fossil provides other techniques for blocking robots which
are less cumbersome to humans.

<h2>Automatic Hyperlinks Based on UserAgent</h2>

Fossil has the ability to selectively enable hyperlinks for users
that lack the <b>Hyperlink</b> capability based on their UserAgent string in the
HTTP request header and on the browsers ability to run Javascript.

The UserAgent string is a text identifier that is included in the header
of most HTTP requests that identifies the specific maker and version of
the browser (or robot) that generated the request.  Typical UserAgent
strings look like this:

<ul>
<li> Mozilla/5.0 (Windows NT 6.1; rv:19.0) Gecko/20100101 Firefox/19.0
<li> Mozilla/4.0 (compatible; MSIE 8.0; Windows_NT 5.1; Trident/4.0)
<li> Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
<li> Wget/1.12 (openbsd4.9)
</ul>

The first two UserAgent strings above identify Firefox 19 and
Internet Explorer 8.0, both running on Windows NT.  The third
example is the robot used by Google to index the internet.
The fourth example is the "wget" utility running on OpenBSD.
Thus the first two UserAgent strings above identify the requester
as human whereas the second two identify the requester as a robot.
Note that the UserAgent string is completely under the control
of the requester and so a malicious robot can forge a UserAgent
string that makes it look like a human.  But most robots want
to "play nicely" on the internet and are quite open
about the fact that they are a robot.  And so the UserAgent string
provides a good first-guess about whether or not a request originates
from a human or a robot.

In Fossil, under the Admin/Robot-Defense menu, there is a setting entitled
"<b>Enable hyperlinks based on User-Agent and/or Javascript</b>".
If this setting is set to "UserAgent only" or "UserAgent and Javascript",
and if the UserAgent string looks like a human and not a robot, then
Fossil will enable hyperlinks even if the <b>Hyperlink</b> capability
is omitted from the user permissions.  This setting gives humans easy
access to the hyperlinks while preventing robots
from walking the billions of pages on a typical Fossil site.

If the setting is "UserAgent only", then the hyperlinks are simply
enabled and that is all.  But if the setting is "UserAgent and Javascript",
then the hyperlinks are not enabled directly.
Instead, the HTML code that is generated contains anchor tags ("&lt;a&gt;")
with "href=" attributes that point to [/honeypot] rather than the correct
link.  JavaScript code is added to the end of the page that goes back and
fills in the correct "href=" attributes of
the anchor tags with the true hyperlink targets, thus enabling the hyperlinks.
This extra step of using JavaScript to enable the hyperlink targets
is a security measure against robots that forge a human-looking
UserAgent string.  Most robots do not bother to run JavaScript and
so to the robot the empty anchor tag will be useless.  But all modern
web browsers implement JavaScript, so hyperlinks will show up
normally for human users.

<h2>Further Defenses</h2>

Recently (as of this writing, in the spring of 2013) the Fossil server
on the SQLite website ([http://www.sqlite.org/src/]) has been hit repeatedly
by Chinese robots that use forged UserAgent strings to make them look
like normal web browsers and which interpret JavaScript.  We do not
believe these attacks to be nefarious since SQLite is public domain
and the attackers could obtain all information they ever wanted to
know about SQLite simply by cloning the repository.  Instead, we
believe these "attacks" are coming from "script kiddies".  But regardless
of whether or not malice is involved, these attacks do present
an unnecessary load on the server which reduces the responsiveness of
the SQLite website for well-behaved and socially responsible users.
For this reason, additional defenses against
robots have been put in place.

On the Admin/Robot-Defense page of Fossil, just below the
"<b>Enable hyperlinks using User-Agent and/or Javascript</b>"
setting, there are now two additional sub-settings that can be optionally
enabled to control hyperlinks.

The first new sub-setting is a delay (in milliseconds) before setting
the "href=" attributes on anchor tags.  The default value for this
delay is 10 milliseconds.  The idea here is that a robots will try to
interpret the links on the page immediately, and will not wait for delayed
scripts to be run, and thus will never enable the true links.

The second sub-setting waits to run the
JavaScript that sets the "href=" attributes on anchor tags until after
at least one "mousedown" or "mousemove" event has been detected on the
&lt;body&gt; element of the page.  The thinking here is that robots will not be
simulating mouse motion and so no mouse events will ever occur and
hence the hyperlinks will never become enabled for robots.

See also [./loadmgmt.md|Managing Server Load] for a description
of how expensive pages can be disabled when the server is under heavy
load.

<h2>The Ongoing Struggle</h2>

Fossil currently does a very good job of providing easy access to humans
while keeping out troublesome robots.  However, robots
continue to grow more sophisticated, requiring ever more advanced
defenses.  This "arms race" is unlikely to ever end.  The developers of
Fossil will continue to try improve the robot defenses of Fossil so
check back from time to time for the latest releases and updates.

Readers of this page who have suggestions on how to improve the robot
defenses in Fossil are invited to submit your ideas to the Fossil Users
forum:
[https://fossil-scm.org/forum].
Added www/apple-touch-icon.png.

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Added www/background.jpg.

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Added www/backoffice.md.

































































































































































































































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Backoffice
==========

This is technical documentation about the internal workings of Fossil.
Ordinary Fossil users do not need to know about anything covered by this
document.  The information here is intended for people who want to enhance
or extend the Fossil code, or who just want a deeper understanding of
the internal workings of Fossil.

What Is The Backoffice
----------------------

The backoffice is a mechanism used by a
[Fossil server](./server/) to do low-priority
background work that is not directly related to the user interface.  Here
are some examples of the kinds of work that backoffice performs:

  1.  Sending email alerts and notifications
  2.  Sending out daily digests of email notifications
  3.  Other background email handling chores
  4.  Automatic syncing of peer repositories
  5.  Repository maintenance and optimization

(As of 2018-08-07, only items 1 and 2 have actually been implemented.)
The idea is that the backoffice handles behind-the-scenes work that does
not have tight latency requirements.

When Backoffice Runs
--------------------

A backoffice process is usually launched automatically by a webpage
request.  After each webpage is generated, Fossil checks to see if any
backoffice work needs to be done. If there is work to do, and no other
process is already assigned to do the work, then a new backoffice process
is started to do the work.

This happens for every webpage, regardless of how that webpage is launched,
and regardless of the purpose of the webpage.  This also happens on the
server for "[fossil sync](/help?cmd=sync)" and
[fossil clone](/help?cmd=clone)" commands which are implemented as
web requests - albeit requests that the human user never sees.
Web requests can arrive at the Fossil server via direct TCP/IP (for example
when Fossil is started using commands like "[fossil server](/help?cmd=server)")
or via [CGI](./server/any/cgi.md) or
[SCGI](./server/any/scgi.md) or via SSH.
A backoffice process might be started regardless of the origin of the
request.

The backoffice is not a daemon.  Each backoffice process runs for a short
while and then exits.  This helps keep Fossil easy to manage, since there
are no daemons to start and stop.  To upgrade Fossil to a new version,
you simply replace the older "fossil" executable with the newer one, and
the backoffice processes will (within a minute or so) start using the new
one.  (Upgrading the executable on Windows is more complicated, since on
Windows it is not possible to replace an executable file that is in active
use.  But Windows users probably already know this.)

The backoffice is serialized and rate limited.  No more than a single
backoffice process will be running at once, and backoffice runs will not
occur more frequently than once every 60 seconds.  (The 60-second spacing
is controlled by the BKOFCE_LEASE_TIME macro in the 
[backoffice.c](/file/src/backoffice.c) source file.)

If a Fossil server is idle, then no backoffice processes will be running.
That means there are no extra processes sitting around taking up memory
and process table slots for seldom accessed repositories.
The backoffice is an on-demand system.
A busy repository will usually have a backoffice
running at all times.  But an infrequently accessed repository will only have
backoffice processes running for a minute or two following the most recent
access.

Manually Running The Backoffice
-------------------------------

The automatic backoffice runs are sufficient for most installations.
However, the daily digest of email notifications is handled by the
backoffice.  If a Fossil server can sometimes go more than a day without
being accessed, then the automatic backoffice will never run, and the
daily digest might not go out until somebody does visit a webpage.
If this is a problem, an administrator can set up a cron job to
periodically run:

    fossil backoffice _REPOSITORY_

That command will cause backoffice processing to occur immediately.
Note that this is almost never necessary for an internet-facing
Fossil repository, since most repositories will get multiple accesses
per day from random robots, which will be sufficient to kick off the
daily digest emails.  And even for a private server, if there is very
little traffic, then the daily digests are probably a no-op anyhow
and won't be missed.

Automatic Backoffice Does Not Work On Some Systems
--------------------------------------------------

We have observed that the automatic backoffice does not work on
some system - OpenBSD in particular.  We still do not understand why
this is.  (If you have insights, please share them on the
[Fossil Forum](https://fossil-scm.org/forum) so that we can perhaps
fix the problem.)  For now, the backoffice must be run manually
on OpenBSD systems.

To set up fully-manual backoffice, first disable the automatic backoffice
using the "[backoffice-disable](/help?cmd=backoffice-disable)" setting.

    fossil setting backoffice-disable on

Then arrange to invoke the backoffice separately using a command
like this:

    fossil backoffice --poll 30 _REPOSITORY-LIST_

Multiple repositories can be named.  This one command will handle
launching the backoffice for all of them.  There are additional useful
command-line options.  See the "[fossil backoffice](/help?cmd=backoffice)"
documentation for details.

The backoffice processes run manually using the "fossil backoffice"
command do not normally use a lease.  That means that if you run the
"fossil backoffice" command with --poll and you forget to disable
automatic backoffice by setting the "backoffice-disable" flag, then
you might have one backoffice running due to a command and another due
to a webpage access, both at the same time.  This is harmless.  The
only downside is that it uses extra CPU time.

How Backoffice Is Implemented
-----------------------------

The backoffice is implemented by the 
"[backoffice.c](/file/src/backoffice.c)" source file.

Serialization and rate limiting is handled by a single entry in the
repository database CONFIG table named "backoffice".  This entry is
called "the lease".  The value of the lease
is a text string representing four integers, which
are respectively:

  1.  The process id of the "current" backoffice process
  2.  The lease expiration time of the current backoffice process
  3.  The process id of the "next" backoffice process
  4.  The lease expiration time for the next backoffice process

Times are expressed in seconds since 1970.  A process id of zero means
"no process".  Sometimes the process id will be non-zero even if there
is no corresponding process. Fossil knows how to figure out whether or
not a process still exists.

You can print out a decoded copy of the current backoffice lease using
this command:

    fossil test-backoffice-lease -R _REPOSITORY_

If a system has been idle for a long time, then there will be no
backoffice processes.  (Either the process id entries in the lease
will be zero, or there will exist no process associated with the
process id.) When a new web request comes in, the system
sees that no backoffice process is active and so it kicks off a separate
process to run backoffice.

The new backoffice process becomes the "current" process.  It sets a
lease expiration time for itself to be 60 seconds in the future.
Then it does the backoffice processing and exits.  Note that usually
the backoffice process will exit long before its lease expires.  That
is ok.  The lease is there to limit the rate at which backoffice processes
run.

If a new backoffice process starts up and sees that the "current" lease has
yet to expire, the new process makes itself the "next" backoffice process
and sets its expiration time to be 60 seconds past the expiration time of
the "current" backoffice process.  The "next" process then puts itself to
sleep until the "current" lease expires.  After the "current"
lease expires and the "current" process has itself exited, then
the "next" process promotes itself to the new "current" process.  It
sets the current lease expiration to be 60 seconds in the future, runs
whatever backoffice work is needed, then exits.

If a new backoffice process starts up and finds that there is already
a "current" lease and a "next" process, it exits without doing anything.
This should happen only rarely, since the lease information is checked
prior to spawning the backoffice process, so a conflict will only happen
in a race.

Because the "backoffice" entry of the CONFIG table is in the repository
database, access to the lease is serialized.  The lease prevents more
than one backoffice process from running at a time.  It prevents
backoffice processes from running more frequently than once every 60 seconds.
And, it guarantees (assuming processes are not killed out-of-band) that
every web request will be followed within 60 seconds by a backoffice
run.

Debugging The Backoffice
------------------------

The backoffice should "just work".  It should not require administrator
attention.  However, if you suspect that something is not working right,
there are some debugging aids.

We have already mentioned the command that shows the backoffice lease
for a repository:

    fossil test-backoffice-lease -R _REPOSITORY_

Running that command every few seconds should show what is going on with
backoffice processing in a particular repository.

There are also settings that control backoffice behavior.  The
"backoffice-nodelay" setting prevents the "next" process from taking a
lease and sleeping.  If "backoffice-nodelay" is set, that causes all
backoffice processes to exit either immediately or after doing whatever
backoffice works needs to be done.  If something is going wrong and
backoffice leases are causing delays in webpage processing, then setting
"backoffice-nodelay" to true can work around the problem until the bug
can be fixed.  The "backoffice-logfile" setting is the name of a log
file onto which is appended a short message every time a backoffice
process actually starts to do the backoffice work.  This log file can
be used to verify that backoffice really is running, if there is any
doubt.  The "backoffice-disable" setting prevents automatic backoffice
processing, if true.  Use this to completely disable backoffice processing
that occurs automatically after each HTTP request.  The "backoffice-disable"
setting does not affect the operation of the manual
"fossil backoffice" command.
Most installations should leave "backoffice-nodelay" and "backoffice-disable"
set to their default values of off and
leave "backoffice-logfile" unset or set to an empty string.
Added www/backup.md.
















































































































































































































































































































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# Backing Up a Remote Fossil Repository

One of the great benefits of Fossil and other [distributed version control systems][dvcs]
is that cloning a repository makes a backup. If you are running a project with multiple
developers who share their work using a [central server][server] and the server hardware
catches fire, the clones of the repository on each developer
workstation *may* serve as a suitable backup.

[dvcs]: wikipedia:/wiki/Distributed_version_control
[server]: ./server/whyuseaserver.wiki

We say “may†because
it turns out not everything in a Fossil repository is copied when cloning. You
don’t even always get copies of all historical file artifacts. More than
that, a Fossil repository typically contains
other useful information that is not always shared as part of a clone, which might need
to be backed up separately.  To wit:


## <a id="pii"></a> Sensitive Information

Fossil purposefully does not clone certain sensitive information unless
you’re logged in as a user with [Setup] capability. As an example, a local clone
may have a different `user` table than the remote, because only a
Setup user is allowed to see the full version for privacy and security
reasons.


## <a id="config"></a> Configuration Drift

Fossil allows the local configuration to differ in several areas from
that of the remote. You get a copy
of *some* of these configuration areas on initial clone — not all! — but after that,
remote configuration changes mostly do not sync down automatically.


#### <a id="skin"></a> Skin

Changes to the remote’s skin don’t sync down, on purpose, since you may
want to have a different skin on the local clone than on the remote. You
can ask for updates with [`fossil config pull skin`][cfg], but that does
not happen automatically during the course of normal development.


#### <a id="alerts"></a> Email Alerts

The Admin → Notification settings do not get copied on clone or sync,
and it is not possible to push such settings from one repository to
another. We did this on purpose because you may have a network of peer
repositories, and you only want one repository sending email alerts. If
Fossil were to automatically replicate the email alert settings to a
separate repository, subscribers would get multiple alerts for each
event, which would be *bad.*

The only element of the email alert configuration that can be pulled
over the sync protocol on demand is the subscriber list, via
[`fossil config pull subscriber`][cfg].


#### <a id="project"></a> Project Configuration

This is normally generated once during `fossil init` and never changed,
so Fossil doesn’t pull this information without being forced, on
purpose. You could accidentally merge two separate Fossil repos by
pushing one repo’s project config up to another, for example.


#### <a id="other-cfg"></a> Others

A repo’s URL aliases, [interwiki configuration](./interwiki.md), and
[ticket customizations](./custom_tcket.wiki) also do not normally sync.

[cfg]: /help?cmd=configuration



## <a id="private"></a> Private Branches

The very nature of Fossil’s [private branch feature][pbr] ensures that
remote clones don’t get a copy of those branches. Normally this is
exactly what you want, but in the case of making backups, you probably
want to back up these branches as well. One of the two backup methods below
provides this.


## <a id="shun"></a> Shunned Artifacts

Fossil purposefully doesn’t sync [shunned artifacts][shun]. If you want
your local clone to be a precise match to the remote, it needs to track
changes to the shun table as well.


## <a id="uv"></a> Unversioned Artifacts

Data in Fossil’s [unversioned artifacts table][uv] doesn’t sync down by
default unless you specifically ask for it. Like local configuration
data, it doesn’t get pulled as part of a normal `fossil sync`, but
*unlike* the config data, you don’t get unversioned files as part of the
initial clone unless you ask for it by passing the `--unversioned/-u`
flag.


## <a id="ait"></a>Autosync Is Intransitive

If you’re using Fossil in a truly distributed mode, rather than the
simple central-and-clones model that is more common, there may be no
single source of truth in the network because Fossil’s autosync feature
isn’t transitive.

That is, if you cloned from server A, and then you stand that up on a
server B, then if I clone from your server as my repository C, your changes to B
autosync up to A, but not down to me on C until I do something locally
that triggers autosync. The inverse is also true: if I commit something
on C, it will autosync up to B, but A won’t get a copy until someone on
B does something to trigger a sync there.

An easy way to run into this problem is to set up failover servers
`svr1` thru `svr3.example.com`, then set `svr2` and `svr3` up to sync
with the first.  If all of the users normally clone from `svr1`, their
commits don’t get to `svr2` and `svr3` until something on one of the
servers pushes or pulls the changes down to the next server in the sync
chain.

Likewise, if `svr1` falls over and all of the users re-point their local
clones at `svr2`, then `svr1` later reappears, `svr1` is likely to
remain a stale copy of the old version of the repository until someone
causes it to sync with `svr2` or `svr3` to catch up again.  And then if
you originally designed the sync scheme to treat `svr1` as the primary
source of truth, those users still syncing with `svr2` won’t have their
commits pushed up to `svr1` unless you’ve set up bidirectional sync,
rather than have the two backup servers do `pull` only.


# <a id="sync-solution"></a> Solution 1: Explicit Pulls

The following script solves most of the above problems for the use case
where you want a *nearly-complete* clone of the remote repository using nothing
but the normal Fossil sync protocol. It only does so if you are logged into
the remote as a user with Setup capability, however.

``` shell
#!/bin/sh
fossil sync --unversioned
fossil configuration pull all
fossil rebuild
```

The last step is needed to ensure that shunned artifacts on the remote
are removed from the local clone. The second step includes
`fossil conf pull shun`, but until those artifacts are actually rebuilt
out of existence, your backup will be “more than complete†in the sense
that it will continue to have information that the remote says should
not exist any more. That would be not so much a “backup†as an
“archive,†which might not be what you want.


# <a id="sql-solution"></a> Solution 2: SQL-Level Backup

The first method doesn’t get you a copy of the remote’s
[private branches][pbr], on purpose. It may also miss other info on the
remote, such as SQL-level customizations that the sync protocol can’t
see. (Some [ticket system customization][tkt] schemes rely on this ability, for example.) You can
solve such problems if you have access to the remote server, which
allows you to get a SQL-level backup by delegating handling of locking
and transaction isolation to
[the `backup` command][bu], allowing the user to safely back up an in-use
repository.

If you have SSH access to the remote server, something like this will work:

``` shell
#!/bin/bash
bf=repo-$(date +%Y-%m-%d).fossil
ssh example.com "cd museum ; fossil backup -R repo.fossil backups/$bf" &&
    scp example.com:museum/backups/$bf ~/museum/backups
```

Beware that this method does not solve [the intransitive sync
problem](#ait), in and of itself: if you do a SQL-level backup of a
stale repo DB, you have a *stale backup!* You should therefore run this
on every node that may need to serve as a backup so that at least *one*
of the backups is also up-to-date.


# <a id="enc"></a> Encrypted Off-Site Backups

A useful refinement that you can apply to both methods above is
encrypted off-site backups. You may wish to store backups of your
repositories off-site on a service such as Dropbox, Google Drive, iCloud,
or Microsoft OneDrive, where you don’t fully trust the service not to
leak your information. This addition to the prior scripts will encrypt
the resulting backup in such a way that the cloud copy is a useless blob
of noise to anyone without the key:

```shell
iter=152830
pass="h8TixP6Mt6edJ3d6COaexiiFlvAM54auF2AjT7ZYYn"
gd="$HOME/Google Drive/Fossil Backups/$bf.xz.enc"
fossil sql -R ~/museum/backups/"$bf" .dump | xz -9 |
    openssl enc -e -aes-256-cbc -pbkdf2 -iter $iter -pass pass:"$pass" -out "$gd"
```

If you’re adding this to the first script above, remove the
“`-R repo-name`†bit so you get a dump of the repository backing the
current working directory.

Change the `pass` value to some other long random string, and change the
`iter` value to something in the hundreds of thousands range. A good source for
the first is [here][grcp], and for the second, [here][rint].

You may find posts online written by people recommending millions of
iterations for PBKDF2, but they’re generally talking about this in the
context of memorizable passwords, where adding even one more character
to the password is a significant burden. Given our script’s purely
random maximum-length passphrase, there isn’t much more that increasing
the key derivation iteration count can do for us.

Conversely, if you were to reduce the passphrase to 41 characters, that
would drop the key strength by roughly 2â¶, being the entropy value per
character for using most of printable ASCII in our passphrase. To make
that lost strength up on the PBKDF2 end, you’d have to multiply your
iterations by 2â¶Â = 64 times. It’s easier to use a max-length passphrase
in this situation than get crazy with key derivation iteration counts.

(This, by the way, is why the example passphrase above is 42 characters:
with 6 bits of entropy per character, that gives you a key size of 252,
as close as we can get to our chosen encryption algorithm’s 256-bit key
size without going over. If it pleases you to give it 43 random
characters for a passphrase in order to pick up those last four bits of
security, you’re welcome to do so.)

Compressing the data before encrypting it removes redundancies that can
make decryption easier, and it results in a smaller backup than you get
with the previous script alone, at the expense of a lot of CPU time
during the backup. You may wish to switch to a less space-efficient
compression algorithm that takes less CPU power, such as [`lz4`][lz4].
Changing up the compression algorithm also provides some
security-thru-obscurity, which is useless on its own, but it *is* a
useful adjunct to strong encryption.

This requires OpenSSL 1.1 or higher. If you’re on 1.0 or older, you
won’t have the `-pbkdf2` and `-iter` options, and you may have to choose
a different cipher algorithm; both changes are likely to weaken the
encryption significantly, so you should install a newer version rather
than work around the lack of these features.

Beware that macOS ships a fork of OpenSSL called [LibreSSL][lssl] that
lacked this capability until Ventura (13.0). If you’re on Monterey (12)
or older, we recommend use of the [Homebrew][hb] OpenSSL package rather
than give up on the security afforded by use of configurable-iteration
PBKDF2. To avoid a conflict with the platform’s `openssl` binary,
Homebrew’s installation is [unlinked][hbul] by default, so you have to
give an explicit path to it, one of:

    /usr/local/opt/openssl/bin/openssl ...     # Intel x86 Macs
    /opt/homebrew/opt/openssl/bin/openssl ...  # ARM Macs (“Apple siliconâ€)

[lssl]: https://www.libressl.org/


## <a id="rest"></a> Restoring From An Encrypted Backup

The “restore†script for the above fragment is basically an inverse of
it, but it’s worth showing it because there are some subtleties to take
care of. If all variables defined in earlier scripts are available, then
restoration is:

```
openssl enc -d -aes-256-cbc -pbkdf2 -iter $iter -pass pass:"$pass" -in "$gd" |
    xz -d | fossil sql --no-repository ~/museum/restored-repo.fossil
```

We changed the `-e` to `-d` on the `openssl` command to get decryption,
and we changed the `-out` to `-in` so it reads from the encrypted backup
file and writes the result to stdout.

The decompression step is trivial.

The last change is tricky: we used `fossil sql` above to ensure that
we’re using the same version of SQLite to write the encrypted backup DB
as was used to maintain the repository. We must also do that on
restoration:
Fossil serves as a dogfooding project for SQLite,
often making use of the latest features, so it is quite likely that a given
random `sqlite3` binary in your `PATH` will be unable to understand the
file created by “`fossil sql .dump`â€! The tricky bit is, you can’t just
pipe the decrypted SQL dump into `fossil sql`, because on startup, Fossil
normally goes looking for tables created by `fossil init`, and it won’t
find them in a newly-created repo DB. We get around this by passing
the `--no-repository` flag, which suppresses this behavior. Doing it
this way saves you from needing to go and build a matching version of
`sqlite3` just to restore the backup.

[bu]:    /help?cmd=backup
[grcp]:  https://www.grc.com/passwords.htm
[hb]:    https://brew.sh
[hbul]:  https://docs.brew.sh/FAQ#what-does-keg-only-mean
[lz4]:   https://lz4.github.io/lz4/
[pbr]:   ./private.wiki
[rint]:  https://www.random.org/integers/?num=1&min=100000&max=1000000&col=5&base=10&format=html&rnd=new
[Setup]: ./caps/admin-v-setup.md#apsu
[shun]:  ./shunning.wiki
[tkt]:   ./tickets.wiki
[uv]:    ./unvers.wiki
Added www/blame.wiki.






























































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<title>The Annotate Algorithm</title>

<h2>1.0 Introduction</h2>

The [/help?cmd=annotate|fossil annotate],
[/help?cmd=blame|fossil blame], and
[/help?cmd=praise|fossil praise] commands, and the
[/help?cmd=/annotate|/annotate],
[/help?cmd=/blame|/blame], and
[/help?cmd=/praise|/praise] web pages are all used to show the most
recent check-in that modified each line of a particular file.
This article overviews the algorithm used to compute the annotation
for a file in Fossil.

<h2>2.0 Algorithm</h2>

<ol type='1'>
<li>Locate the check-in that contains the file that is to be
    annotated.  Call this check-in C0.
<li>Find all direct ancestors of C0.  A direct ancestor is the closure
    of the primary parent of C0.  Merged in branches are not part of
    the direct ancestors of C0.
<li>Prune the list of ancestors of C0 so that it contains only
    check-ins in which the file to be annotated was modified.
<li>Load the complete text of the file to be annotated from check-in C0.
    Call this version of the file F0.
<li>Parse F0 into lines.  Mark each line as "unchanged".
<li>For each ancestor of C0 on the pruned list (call the ancestor CX),
    beginning with the most
    recent ancestor and moving toward the oldest ancestor, do the
    following steps:
<ol type='a'>
<li>Load the text for the file to be annotated as it existed in check-in CX.
    Call this text FX.
<li>Compute a diff going from FX to F0.
<li>For each line of F0 that is changed in the diff and which was previously
    marked "unchanged", update the mark to indicated that line
    was modified by CX.
</ol>
<li>Show each line of F0 together with its change mark, appropriately
    formatted.
</ol>

<h2>3.0 Discussion and Notes</h2>

The time-consuming part of this algorithm is step 6b - computing the
diff from all historical versions of the file to the version of the file
under analysis.  For a large file that has many historical changes, this
can take several seconds.  For this reason, the default
[/help?cmd=/annotate|/annotate] webpage only shows those lines that were
changed by the 20 most recent modifications to the file.  This allows
the loop on step 6 to terminate after only 19 diffs instead of the hundreds
or thousands of diffs that might be required for a frequently modified file.

As currently implemented (as of 2015-12-12) the annotate algorithm does not
follow files across name changes.  File name change information is
available in the database, and so the algorithm could be enhanced to follow
files across name changes by modifications to step 3.

Step 2 is interesting in that it is
[/artifact/6cb824a0417?ln=196-201 | implemented] using a
[https://www.sqlite.org/lang_with.html#recursivecte|recursive common table expression].
Added www/blockchain.md.






























































































































































































































































































































































































































































































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# Is Fossil A Blockchain?

The Fossil version control system shares a lot of similarities with
other blockchain based technologies, but it also differs from the more common
sorts of blockchains. This document will discuss the term’s
applicability, so you can decide whether applying the term to Fossil
makes sense to you.


## The Dictionary Argument

The [Wikipedia definition of "blockchain"][bcwp] begins:

>
  "A blockchain…is a growing list of records, called blocks, which are linked using
   cryptography… Each block contains a cryptographic hash of the previous
   block, a timestamp, and transaction data (generally represented as a Merkle tree)."

Point-for-point, Fossil follows this partial definition.
The blocks
are Fossil’s ["manifest" artifacts](./fileformat.wiki#manifest). Each
manifest has a cryptographically-strong [SHA-1] or [SHA-3] hash linking it to
one or more “parent†blocks. The manifest also contains a timestamp and
the transactional data needed to express a commit to the repository.
To traverse the Fossil repository from the tips of its [DAG] to the
root by following the parent hashes in each manifest is to traverse
a Merkle tree.
Every change in Fossil starts by adding one or more manifests to
the repository, extending this Merkle tree.

[bcwp]:  https://en.wikipedia.org/wiki/Blockchain
[DAG]:   https://en.wikipedia.org/wiki/Directed_acyclic_graph
[SHA-1]: https://en.wikipedia.org/wiki/SHA-1
[SHA-3]: https://en.wikipedia.org/wiki/SHA-3



<a id="currency"></a>
## Cryptocurrency

Because blockchain technology was first popularized as Bitcoin, many
people associate the term with cryptocurrency.  Fossil has nothing to do
with cryptocurrency, so a claim that “Fossil is a blockchain†may fail
to communicate the speaker’s concepts clearly due to conflation with
cryptocurrency.

Cryptocurrency has several features and requirements that Fossil doesn’t
provide, either because it doesn’t need them or because we haven’t
gotten around to creating the feature. Whether these are essential to
the definition of “blockchain†and thus disqualify Fossil as a blockchain
is for you to decide.

Cryptocurrencies must prevent three separate types of fraud to be useful:

*   **Type 1** is modification of existing currency. To draw an analogy
    to paper money, we wish to prevent someone from using green and
    black markers to draw extra zeroes on a US $10 bill so that it
    claims to be a $100 bill.

*   **Type 2** is creation of new fraudulent currency that will pass
    in commerce.  To extend our analogy, it is the creation of new
    US $10 bills. There are two sub-types to this fraud. In terms of
    our analogy, they are:

    *  **Type 2a**: copying an existing legitimate $10 bill<br><br>

    *  **Type 2b**: printing a new $10 bill that is unlike an existing
       legitimate one, yet which will still pass in commerce

*   **Type 3** is double-spending existing legitimate cryptocurrency.
    There is no analogy in paper money due to its physical form; it is a
    problem unique to digital currency due to its infinitely-copyable
    nature.

How does all of this compare to Fossil?

1.  <a id="signatures"></a>**Signatures.** Cryptocurrencies use a chain
    of [digital signatures][dsig] to prevent Type 1 and Type 3 frauds. This
    chain forms an additional link between the blocks, separate from the
    hash chain that applies an ordering and lookup scheme to the blocks.
    [_Blockchain: Simple Explanation_][bse] explains this “hash chainâ€
    vs. “block chain†distinction in more detail.

    These signatures prevent modification of the face value of each
    transaction (Type 1 fraud) by ensuring that only the one signing a
    new block has the private signing key that could change an issued
    block after the fact.

    The fact that these signatures are also *chained* prevents Type
    3 frauds by making the *prior* owner of a block sign it over to
    the new owner. To avoid an O(n²) auditing problem as a result,
    cryptocurrencies add a separate chain of hashes to make checking
    for double-spending quick and easy.

    Fossil has [a disabled-by-default feature][cs] to call out to an
    external copy of [PGP] or [GPG] to sign commit manifests before
    inserting them into the repository. You can couple that with
    a server-side [after-receive hook][arh] to reject unsigned commits.

    Although there are several distinctions you can draw between the way
    Fossil’s commit signing scheme works and the way block signing works
    in cryptocurrencies, only one is of material interest for our
    purposes here: Fossil commit signatures apply only to a single
    commit. Fossil does not sign one commit over to the next “owner†of
    that commit in the way that a blockchain-based cryptocurrency must
    when transferring currency from one user to another, beacuse there
    is no useful analog to the double-spending problem in Fossil.  The
    closest you can come to this is double-insert of commits into the
    blockchain, which we’ll address shortly.

    What Fossil commit signatures actually do is provide in-tree forgery
    prevention, both Type 1 and Type 2. You cannot modify existing
    commits (Type 1 forgery) because you do not have the original
    committer’s private signing key, and you cannot forge new commits
    attesting to come from some other trusted committer (Type 2) because
    you don’t have any of their private signing keys, either.
    Cryptocurrencies use the work problem to prevent Type 2
    forgeries, but the application of that to Fossil is a matter we get
    to [later](#work).

    Although you have complete control over the contents of your local
    Fossil repository clone, you cannot perform Type 1 forgery on its
    contents short of executing a [preimage attack][prei] on the hash
    algorithm. ([SHA3-256][SHA-3] by default in the current version of
    Fossil.) Even if you could, Fossil’s sync protocol will prevent the
    modification from being pushed into another repository: the remote
    Fossil instance says, “I’ve already got that one, thanks,†and
    ignores the push.  Thus, short of breaking into the remote server
    and modifying the repository in place, you couldn’t make use of
    a preimage attack even if you had that power. Further, that would be an attack on the
    server itself, not on Fossil’s data structures, so while it is
    useful to think through this problem, it is not helpful in answering
    our questions here.

    The Fossil sync protocol’s duplication detection also prevents the closest analog to Type 3
    frauds in Fossil: copying a commit manifest in your local repo clone
    won’t result in a double-commit on sync.

    In the absence of digital signatures, Fossil’s [RBAC system][caps]
    restricts Type 2 forgery to trusted committers. Thus once again
    we’re reduced to an infosec problem, not a data structure design
    question.

    (Inversely, enabling commit clearsigning is a good idea
    if you have committers on your repo whom you don’t trust not to
    commit Type 2 frauds. But let us be clear: your choice of setting
    does not answer the question of whether Fossil is a blockchain.)

    If Fossil signatures prevent Type 1 and Type 2 frauds, you
    may wonder why they are not enabled by default. It is because
    they are defense-in-depth measures, not the minimum sufficient
    measures needed to prevent repository fraud, unlike the equivalent
    protections in a cryptocurrency blockchain. Fossil provides its
    primary protections through other means, so it doesn’t need to
    mandate signatures.

    Also, Fossil is not itself a [PKI], and there is no way for regular
    users of Fossil to link it to a PKI, since doing so would likely
    result in an unwanted [PII] disclosure.  There is no email address
    in a Fossil commit manifest that you could use to query one of the
    public PGP keyservers, for example. It therefore becomes a local
    policy matter as to whether you even *want* to have signatures,
    because they’re not without their downsides.

2.  <a id="work"></a>**Work Contests.** Cryptocurrencies prevent Type 2b forgeries
    by setting up some sort of contest that ensures that new coins can come
    into existence only by doing some difficult work task. This “miningâ€
    activity results in a coin that took considerable work to create,
    which thus has economic value by being a) difficult to re-create,
    and b) resistant to [debasement][dboc].

    Fossil repositories are most often used to store the work product of
    individuals, rather than cryptocoin mining machines. There is
    generally no contest in trying to produce the most commits. There
    may be an implicit contest to produce the “best†commits, but that
    is a matter of project management, not something that can be
    automatically mediated through objective measures.

    Incentives to commit to the repository come from outside of Fossil;
    they are not inherent to its nature, as with cryptocurrencies.
    Moreover, there is no useful sense in which we could say that one
    commit “re-creates†another. Commits are generally products of
    individual human intellect, thus necessarily unique in all but
    trivial cases. This is foundational to copyright law.

3.  <a id="lcr"></a>**Longest Chain Rule.** Cryptocurrencies generally
    need some way to distinguish which blocks are legitimate and which
    not.  They do this in part by identifying the linear chain with the
    greatest cumulative [work time](#work) as the legitimate chain. All
    blocks not on that linear chain are considered “orphans†and are
    ignored by the cryptocurrency software.

    Its inverse is sometimes called the “51% attack†because a single
    actor would have to do slightly more work than the entire rest of
    the community using a given cryptocurrency in order for their fork
    of the currency to be considered the legitimate fork. This argument
    soothes concerns that a single bad actor could take over the
    network.

    The closest we can come to that notion in Fossil is the default
    “trunk†branch, but there’s nothing in Fossil that delegitimizes
    other branches just because they’re shorter, nor is there any way in
    Fossil to score the amount of work that went into a commit. Indeed,
    [forks and branches][fb] are *valuable and desirable* things in
    Fossil.

This much is certain: Fossil is definitely not a cryptocurrency. Whether
this makes it “not a blockchain†is a subjective matter.

[arh]:  ./hooks.md
[bse]:  https://www.researchgate.net/publication/311572122_What_is_Blockchain_a_Gentle_Introduction
[caps]: ./caps/
[cs]:   /help?cmd=clearsign
[dboc]: https://en.wikipedia.org/wiki/Debasement
[dsig]: https://en.wikipedia.org/wiki/Digital_signature
[fb]:   ./branching.wiki
[GPG]:  https://gnupg.org/
[PGP]:  https://www.openpgp.org/
[PII]:  https://en.wikipedia.org/wiki/Personal_data
[PKI]:  https://en.wikipedia.org/wiki/Public_key_infrastructure
[pow]:  https://en.wikipedia.org/wiki/Proof_of_work
[prei]: https://en.wikipedia.org/wiki/Preimage_attack



<a id="dlt"></a>
## Distributed Ledgers

Cryptocurrencies are an instance of [distributed ledger technology][dlt]. If
we can convince ourselves that Fossil is also a distributed
ledger, then we might think of Fossil as a peer technology,
having at least some qualifications toward being considered a blockchain.

A key tenet of DLT is that records be unmodifiable after they’re
committed to the ledger, which matches quite well with Fossil’s design
and everyday use cases. Fossil puts up multiple barriers to prevent
modification of existing records and injection of incorrect records.

Yet, Fossil also has [purge] and [shunning][shun]. Doesn’t that mean
Fossil cannot be a distributed ledger?

These features only remove existing commits from the repository. If you want a
currency analogy, they are ways to burn a paper bill or to melt a [fiat
coin][fc] down to slag. In a cryptocurrency, you can erase your “walletâ€
file, effectively destroying money in a similar way. These features
do not permit forgery of either type described above: you can’t use them
to change the value of existing commits (Type 1) or add new commits to
the repository (Type 2).

What if we removed those features from Fossil, creating an append-only
Fossil variant? Is it a DLT then? Arguably still not, because [today’s Fossil
is an AP-mode system][ctap], which means
there can be no guaranteed consensus on the content of the ledger at any
given time. An AP-mode accounts receivable system would allow
different bottom-line totals at different sites, because you’ve
cast away “C†to get AP-mode operation. (See the prior link or
[Wikipedia’s article on the CAP theorem][cap] if you aren’t following
this terminology.)

By the same token, you cannot guarantee that the command
“`fossil info tip`†gives the same result everywhere. You would need to
recast Fossil as a CA or CP-mode system to solve that.
(Everyone not
partitioned away from the majority of the network at any rate, in the CP
case.)

What are the prospects for CA-mode or CP-mode Fossil? [We don’t want
CA-mode Fossil][ctca], but [CP-mode could be useful][ctcp]. Until the latter
exists, this author believes Fossil is not a distributed ledger in a
technologically defensible sense.

The most common technologies answering to the label “blockchain†are all
DLTs, so if Fossil is not a DLT, then it is not a blockchain in that
sense.

[ctap]:   ./cap-theorem.md#ap
[ctca]:   ./cap-theorem.md#ca
[ctcp]:   ./cap-theorem.md#cp
[cap]:    https://en.wikipedia.org/wiki/CAP_theorem
[dlt]:    https://en.wikipedia.org/wiki/Distributed_ledger
[DVCS]:   https://en.wikipedia.org/wiki/Distributed_version_control
[fc]:     https://en.wikipedia.org/wiki/Fiat_money
[purge]:  /help?cmd=purge
[shun]:   ./shunning.wiki


<a id="dpc"></a>
## Distributed Partial Consensus

If we can’t get DLT, can we at least get some kind of distributed
consensus at the level of individual Fossil’s commits?

Many blockchain based technologies have this property: given some
element of the blockchain, you can make certain proofs that it either is
a legitimate part of the whole blockchain, or it is not.

Unfortunately, this author doesn’t see a way to do that with Fossil.
Given only one “block†in Fossil’s putative “blockchain†— a commit, in
Fossil terminology — all you can prove is whether it is internally
consistent, that it is not corrupt. That then points you at the parent(s) of that
commit, which you can repeat the exercise on, back to the root of the
DAG. This is what the enabled-by-default [`repo-cksum` setting][rcks]
does.

If cryptocurrencies worked this way, you wouldn’t be able to prove that
a given cryptocoin was legitimate without repeating the proof-of-work
calculations for the entire cryptocurrency scheme! Instead, you only
need to check a certain number of signatures and proofs-of-work in order
to be reasonably certain that you are looking at a legitimate section of
the whole blockchain.

What would it even mean to prove that a given Fossil commit “*belongs*â€
to the repository you’ve extracted it from? For a software project,
isn’t that tantamount to automatic code review, where the server would
be able to reliably accept or reject a commit based solely on its
content? That sounds nice, but this author believes we’ll need to invent
[AGI] first.

A better method to provide distributed consensus for Fossil would be to
rely on the *natural* intelligence of its users: that is, distributed
commit signing, so that a commit is accepted into the blockchain only
once some number of users countersign it. This amounts to a code review
feature, which Fossil doesn’t currently have.

Solving that problem basically requires solving the [PKI] problem first,
since you can’t verify the proofs of these signatures if you can’t first
prove that the provided signatures belong to people you trust. This is a
notoriously hard problem in its own right.

A future version of Fossil could instead provide [consensus in the CAP
sense][ctcp]. For instance, you could say that if a quorum of servers
all have a given commit, it “belongs.†Fossil’s strong hashing tech
would mean that querying whether a given commit is part of the
“blockchain†would be as simple as going down the list of servers and
sending each an HTTP GET `/info` query for the artifact ID, concluding
that the commit is legitimate once you get enough HTTP 200 status codes back. All of this is
hypothetical, because Fossil doesn’t do this today.

[AGI]:  https://en.wikipedia.org/wiki/Artificial_general_intelligence
[rcks]: /help?cmd=repo-cksum



<a id="anon"></a>
## Anonymity

Many blockchain based technologies go to extraordinary lengths to
allow anonymous use of their service.

As typically configured, Fossil does not: commits synced between servers
always at least have a user name associated with them, which the remote
system must accept through its [RBAC system][caps]. That system can run
without having the user’s email address, but it’s needed if [email
alerts][alert] are enabled on the server. The remote server logs the IP
address of the commit for security reasons. That coupled with the
timestamp on the commit could sufficiently deanonymize users in many
common situations.

It is possible to configure Fossil so it doesn’t do this:

* You can give [Write capability][capi] to user category “nobody,†so
  that anyone that can reach your server can push commits into its
  repository.

* You could give that capability to user category “anonymous†instead,
  which requires that the user log in with a CAPTCHA, but which doesn’t
  require that the user otherwise identify themselves.

* You could enable [the `self-register` setting][sreg] and choose not to
  enable [commit clear-signing][cs] so that anonymous users could push
  commits into your repository under any name they want.

On the server side, you can also [scrub] the logging that remembers
where each commit came from.

Commit source info isn’t transmitted from the remote server on clone or pull:
the size of the `rcvfrom` table after initial clone is 1, containing
only the remote server’s IP address. On each pull containing new
artifacts, your local `fossil` instance adds another entry to this
table, likely with the same IP address unless the server has moved or
you’re using [multiple remotes][mrep]. This table is far more
interesting on the server side, containing the IP addresses of all
contentful pushes; thus [the `scrub` command][scrub].

Because Fossil doesn’t
remember IP addresses in commit manifests or require commit signing, it
allows at least *pseudonymous* commits. When someone clones a remote
repository, they don’t learn the email address, IP address, or any other
sort of [PII] of prior committers, on purpose.

Some people say that private, permissioned blockchains (as you may
imagine Fossil to be) are inherently problematic by the very reason that
they don’t bake anonymous contribution into their core. The very
existence of an RBAC is a moving piece that can break. Isn’t it better,
the argument goes, to have a system that works even in the face of
anonymous contribution, so that you don’t need an RBAC? Cryptocurrencies
do this, for example: anyone can “mine†a new coin and push it into the
blockchain, and there is no central authority restricting the transfer
of cryptocurrency from one user to another.

We can draw an analogy to encryption, where an algorithm is
considered inherently insecure if it depends on keeping any information
from an attacker other than the key. Encryption schemes that do
otherwise are derided as “security through obscurity.â€

You may be wondering what any of this has to do with whether Fossil is a
blockchain, but that is exactly the point: all of this is outside
Fossil’s core hash-chained repository data structure. If you take the
position that you don’t have a “blockchain†unless it allows anonymous
contribution, with any needed restrictions provided only by the very
structure of the managed data, then Fossil does not qualify.

Why do some people care about this distinction? Consider Bitcoin,
wherein an anonymous user cannot spam the blockchain with bogus coins
because its [proof-of-work][pow] protocol allows such coins to be
rejected immediately. There is no equivalent in Fossil: it has no
technology that allows the receiving server to look at the content of a
commit and automatically judge it to be “good.†Fossil relies on its
RBAC system to provide such distinctions: if you have a commit bit, your
commits are *ipso facto* judged “good,†insofar as any human work
product can be so judged by a blob of compiled C code. This takes us
back to the [digital ledger question](#dlt), where we can talk about
what it means to later correct a bad commit that got through the RBAC
check.

We may be willing to accept pseudonymity, rather than full anonymity.
If we configure Fossil as above, either bypassing the RBAC or abandoning
human control over it, scrubbing IP addresses, etc., is it then a public
permissionless blockchain in that sense?

We think not, because there is no [longest chain rule](#lcr) or anything
like it in Fossil.

For a fair model of how a Fossil repository might behave under such
conditions, consider GitHub: here one user can fork another’s repository
and make an arbitrary number of commits to their public fork.  Imagine
this happens 10 times. How does someone come along later and
*automatically* evaluate which of the 11 forks of the code (counting the
original repository among their number) is the “best†one? For a
computer software project, the best we could do to approximate this
devolves to a [software project cost estimation problem][scost]. These
methods are rather questionable in their own right, being mathematical
judgement values on human work products, but even if we accept their
usefulness, then we still cannot say which fork is better based solely
on their scores under these metrics. We may well prefer to use the fork
of a software program that took *less* effort, being smaller, more
self-contained, and with a smaller attack surface.


[alert]: ./alerts.md
[capi]:  ./caps/ref.html#i
[mrep]:  /help?cmd=remote
[scost]: https://en.wikipedia.org/wiki/Software_development_effort_estimation
[scrub]: /help?cmd=scrub
[sreg]:  /help?cmd=self-register


# Conclusion

This author believes it is technologically indefensible to call Fossil a
“blockchain†in any sense likely to be understood by a majority of those
you’re communicating with. Using a term in a nonstandard way just because you can
defend it means you’ve failed any goal that requires clear communication.
The people you’re communicating your ideas to must have the
same concept of the terms you use.

What term should you use instead? Fossil stores a DAG of hash-chained
commits, so an indisputably correct term is a [Merkle tree][mt], named
after [its inventor][drrm].  You could also use the more generic term
“hash tree.â€

Fossil is a technological peer to many common sorts of blockchain
technology. There is a lot of overlap in concepts and implementation
details, but when speaking of what most people understand as
“blockchain,†Fossil is not that.

[drrm]: https://en.wikipedia.org/wiki/Ralph_Merkle
[mt]:   https://en.wikipedia.org/wiki/Merkle_tree
Deleted www/branch01.gif.

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<title>Fossil Documentation</title>
<h1 align="center">
Branching, Forking, Merging, and Tagging
</h1>
<title>Branching, Forking, Merging, and Tagging</title>
<h2>Background</h2>

In a simple and perfect world, the development of a project would proceed
linearly, as shown in figure 1.
linearly, as shown in Figure 1.

<center><table border=1 cellpadding=10 hspace=10 vspace=10>
<tr><td align="center">
<img src="branch01.gif" width=280 height=68><br>
Figure 1
</td></tr></table></center>
<verbatim type="pikchr center toggle">
ALL: [circle rad 0.1in thickness 1.5px "1"
arrow right 40%
circle same "2"
arrow same
circle same "3"
arrow same
circle same "4"]
box invis "Figure 1" big fit with .n at .3cm below ALL.s
</verbatim>

Each circle represents a check-in.  For the sake of clarity, the check-ins
are given small consecutive numbers.  In a real system, of course, the
check-in numbers would be 40-character SHA1 hashes since it is not possible
to allocate collision-free sequential numbers is a distributed system.
But sequential numbers are easier to read, so we will substitute them for
the 40-character SHA1 hashes in this document.
check-in numbers would be long hexadecimal hashes since it is not possible
to allocate collision-free sequential numbers in a distributed system.
But as sequential numbers are easier to read, we will substitute them for
the long hashes in this document.

The arrows in figure 1 show evolution of the project.  The initial
The arrows in Figure 1 show the evolution of a project.  The initial
check-in is 1.  Check-in 2 is derived from 1.  In other words, check-in 2
was created by making edits to check-in 1 and then committing those edits.
We say that 2 is a <i>child</i> of 1
and that 1 is a <i>parent</i> of 2.  
and that 1 is a <i>parent</i> of 2.
Check-in 3 is derived from check-in 2, making
3 a child of 2.  We say that 3 is a <i>descendant</i> of both 1 and 2 and that 1
and 2 are both <i>ancestors</i> of 3.  
and 2 are both <i>ancestors</i> of 3.

<h2 id="dag">DAGs</h2>

The graph of check-ins is a
[http://en.wikipedia.org/wiki/Directed_acyclic_graph | directed acyclic graph],
We call the graph of check-ins a <i>tree</i>.  Check-in 1 is the <i>root</i>
since it has no ancestors.  Check-in 4 is a <i>leaf</i> of the tree since
it has no descendants.  (We will give a more precise in the definition of
"leaf" later.)
commonly shortened to <i>DAG</i>.  Check-in 1 is the <i>root</i> of the DAG
since it has no ancestors.  Check-in 4 is a <i>leaf</i> of the DAG since
it has no descendants.  (We will give a more precise definition later of
"leaf.")

Alas, reality often interferes with the simple linear development of a
project.  Suppose two programmers make independent modifications to check-in 2.
After both changes are checked in, we have a check-in graph that looks 
After both changes are committed, the check-in graph looks like Figure 2:
like figure 2:

<center><table border=1 cellpadding=10 hspace=10 vspace=10>
<tr><td align="center">
<img src="branch02.gif" width=210 height=140><br>
Figure 2
</td></tr></table></center>
<verbatim type="pikchr center toggle">
ALL: [circle rad 0.1in thickness 1.5px "1"
arrow right 40%
circle same "2"
circle same "3" at 2nd circle+(.4,.3)
arrow from 2nd circle to 3rd circle chop
circle same "4" at 2nd circle+(.4,-.3)
arrow from 2nd circle to 4th circle chop]
box invis "Figure 2" big fit with .n at .3cm below ALL.s
</verbatim>

The graph in figure 2 has two leaves: check-ins 3 and 4.  Check-in 2 has
two children, check-ins 3 and 4.  We call this stituation a <i>fork</i>.
The graph in Figure 2 has two leaves: check-ins 3 and 4.  Check-in 2 has
two children, check-ins 3 and 4.  We call this state a <i>fork</i>.

Fossil tries to prevent forks.  Suppose the two programmers who were
editing check-in 2 are named Alice and Bob.  Suppose Alice finished her
edits first and did a commit, resulting in check-in 3.  Later, when Bob
tried to commit his changes, fossil would try to verify that check-in 2
was still a leaf.  Fossil would see that check-in 3 had occurred and would
abort Bob's commit attempt with a message "would fork".  This allows Bob
to do a "fossil update" which would pull in Alices changes and merge them
together with his own changes.  After merging, Bob could then commit
check-in 4 as a child of check-in 3 and the result would be a linear graph
as shown in figure 1.  This is how CVS works.  This is also how fossil
works in "autosync" mode.
Fossil tries to prevent forks, primarily through its
"[./concepts.wiki#workflow | autosync]" mechanism.

Suppose two programmers named Alice and
Bob are each editing check-in 2 separately. Alice finishes her edits
and commits her changes first, resulting in check-in 3. When Bob later
attempts to commit his changes, Fossil verifies that check-in 2 is still
a leaf. Fossil sees that check-in 3 has occurred and aborts Bob's commit
attempt with a message "would fork." This allows Bob to do a "fossil
update" to pull in Alice's changes, merging them into his own
changes. After merging, Bob commits check-in 4 as a child of check-in 3.
The result is a linear graph as shown in Figure 1. This is how CVS
works. This is also how Fossil works in autosync mode.

But perhaps Bob is off-network when he does his commit, so he has no way
of knowing that Alice has already committed her changes.  Or, it could
be that Bob has turned off "autosync" mode in Fossil.  Or, maybe Bob
just doesn't want to merge in Alice's changes before he has saved his
own, so he forces the commit to occur using the "--allow-fork" option to
the <b>[/help?cmd=commit | fossil commit]</b> command.  For any of these
reasons, two commits against check-in 2 have occurred, so the DAG now
has two leaves.

In such a condition, a person working with this repository has a
dilemma: which version of the project is the "latest" in the sense of
having the most features and the most bug fixes?  When there is more
than one leaf in the graph, you don't really know, which is why we
would ideally prefer to have linear check-in graphs.

Fossil resolves such problems using the check-in time on the leaves to
decide which leaf to use as the parent of new leaves.  When a branch is
forked as in Figure 2, Fossil will choose check-in 4 as the parent for a
later check-in 5, but <i>only</i> if it has sync'd that check-in down
into the local repository. If autosync is disabled or the user is
off-network when that fifth check-in occurs so that check-in 3 is the
latest on that branch at the time within that clone of the repository,
Fossil will make check-in 3 the parent of check-in 5! We show practical
consequences of this [#bad-fork | later in this article].

But it might be that Bob is off-network when he does his commit, so he
has no way of knowing that Alice has already committed her changes.
Or, it could be that Bob has turned off "autosync" mode in SQLite.  Or,
maybe Bob just doesn't want to merge in Alices changes before he has
saved his own, so he forces the commit to occur using the "--force" option
to the fossil <b>commit</b> command.  For whatever reason, two commits against
check-in 2 have occurred and now the tree has two leaves.
Fossil also uses a forked branch's leaf check-in timestamps when
checking out that branch: it gives you the fork with the latest
check-in, which in turn selects which parent your next check-in will be
a child of.  This situation means development on that branch can fork
into two independent lines of development, based solely on which branch
tip is newer at the time the next user starts his work on it.

So which version of the project is the "latest" in the sense of having
Because of these potential problems, we strongly recommend that you do
the most features and the most bug fixes?  When there is more than
one leaf in the graph, you don't really know.  So we like to have
graphs with a single leaf.
not intentionally create forks on long-lived shared working branches
with "--allow-fork".  (Prime example: trunk.) The inverse case —
intentional forks on short-lived single-developer branches — is far
easier to justify, since presumably the lone developer is never confused
about why there are two or more leaves on that branch. Further
justifications for intentional forking are [#forking | given below].

Let us return to Figure 2. To resolve such situations before they can
To resolve this situation, Alice can use the fossil <b>merge</b> command
to merge in Bob's changes in her local copy of check-in 3.  Then she
can commit the results as check-in 5.  This results in a tree as shown
in figure 3.
become a real problem, Alice can use the <b>[/help?cmd=merge | fossil
merge]</b> command to merge Bob's changes into her local copy of
check-in 3. Without arguments, that command merges all leaves on the
current branch. Alice can then verify that the merge is sensible and if
so, commit the results as check-in 5.  This results in a DAG as shown in
Figure 3.

<center><table border=1 cellpadding=10 hspace=10 vspace=10>
<tr><td align="center">
<img src="branch03.gif" width=282 height=152><br>
Figure 3
</td></tr></table></center>
<verbatim type="pikchr center toggle">
ALL: [circle rad 0.1in thickness 1.5px "1"
arrow right 40%
circle same "2"
circle same "3" at 2nd circle+(.4,.3)
arrow from 2nd circle to 3rd circle chop
circle same "4" at 2nd circle+(.4,-.3)
arrow from 2nd circle to 4th circle chop
circle same "5" at 3rd circle+(.4,-.3)
arrow from 3rd circle to 5th circle chop
arrow dashed .03 from 4th circle to 5th circle chop]
box invis "Figure 3" big fit with .n at .2cm below ALL.s
</verbatim>

Check-in 5 is a child of check-in 3 because it was created by editing
check-in 3.  But check-in 5 also inherits the changes from check-in 4 by
virtue of the merge.  So we say that check-in 5 is a <i>merge child</i>
of check-in 4 and that it is a <i>direct child</i> of check-in 3.  
The graph is now back to a single leaf (check-in 5).
check-in 3, but since check-in 5 also inherits the changes from check-in 4 by
virtue of the merge, we say that check-in 5 is a <i>merge child</i>
of check-in 4 and that it is a <i>direct child</i> of check-in 3.
The graph is now back to a single leaf, check-in 5.

We have already seen that if fossil is in autosync mode then Bob would
We have already seen that if Fossil is in autosync mode then Bob would
have been warned about the potential fork the first time he tried to
commit check-in 4.  If Bob had updated his local check-out to merge in
Alice's check-in 3 changes, then committed, then the fork would have
Alice's check-in 3 changes, then committed, the fork would have
never occurred.  The resulting graph would have been linear, as shown
in Figure 1.
in figure 1.  Really the graph of figure 1 is a subset of figure 3.
Hold your hand over the check-in 4 circle of figure 3 and then figure
3 looks exactly like figure 1 (except that the leaf has a different check-in
number, but that is just a notational difference - the two check-ins have
exactly the same content).  In other words, figure 3 is really a superset
of figure 1.  The check-in 4 of figure 3 captures addition state which
is omitted from figure 1.  Check-in 4 of figure 3 holds a copy
of Bob's local checkout before he merged in Alice's changes.  That snapshot
of Bob's changes independent of Alice's changes is omitted from figure 1.
Some people say that the approach taken in figure 3 is better because it
preserves this extra intermediate state.  Others say that the approach
taken in figure 1 is better because it is much easier to visualize a
linear line of development and because the the merging happens automatically
instead of as a separate manual step.  We will not take sides in that
debate.  We will simply point out that fossil enables you to do it either way.

Realize that the graph of Figure 1 is a subset of Figure 3. If you hold your
hand over the â‘£ in Figure 3, it looks
exactly like Figure 1 except that the leaf has a different check-in
number. That is just a notational difference: the two check-ins
have exactly the same content.

Inversely, Figure 3 is a
superset of Figure 1.  The check-in 4 of Figure 3 captures additional
state which is omitted from Figure 1.  Check-in 4 of Figure 3 holds a
copy of Bob's local checkout before he merged in Alice's changes.  That
snapshot of Bob's changes, which is independent of Alice's changes, is
omitted from Figure 1.

Some people say that the development approach taken in
Figure 3 is better because it preserves this extra intermediate state.
Others say that the approach taken in Figure 1 is better because it is
much easier to visualize linear development and because the
merging happens automatically instead of as a separate manual step.  We
will not take sides in that debate.  We will simply point out that
Fossil enables you to do it either way.

<h2>Forking Versus Branching</h2>
<h2 id="branching">The Alternative to Forking: Branching</h2>

Having more than one leaf in the check-in tree is usually
considered undesirable, and so forks are usually either avoided entirely,
as in figure 1, or else quickly resolved as shown in figure 3.
Having more than one leaf in the check-in DAG is called a "fork." This
is usually undesirable and either avoided entirely,
as in Figure 1, or else quickly resolved as shown in Figure 3.
But sometimes, one does want to have multiple leaves.  For example, a project
might have one leaf that is the latest version of the project under
development and another leaf that is the latest version that has been
tested.
When multiple leaves are desirable, we call the phenomenon <i>branching</i>
instead of <i>forking</i>.
When multiple leaves are desirable, we call this <i>branching</i>
instead of <i>forking</i>:

Figure 4 shows an example of a project where there are two branches, one
for development work and another for testing.

<center><table border=1 cellpadding=10 hspace=10 vspace=10>
<tr><td align="center">
<verbatim type="pikchr center toggle">
ALL: [circle rad 0.1in thickness 1.5px fill white "1"
arrow 40%
C2: circle same "2"
arrow same
circle same "3"
arrow same
C5: circle same "5"
arrow same
C7: circle same "7"
arrow same
C8: circle same "8"
arrow same
C10: circle same "10"
C4: circle same at 3rd circle-(0,.35) "4"
C6: circle same at (1/2 way between C5 and C7,C4) "6"
C9: circle same at (1/2 way between C8 and C10,C4) "9"
arrow from C2 to C4 chop
arrow from C4 to C6 chop
arrow from C6 to C9 chop
arrow dashed 0.03 from C6 to C7 chop
arrow same from C9 to C10
layer = 0
<img src="branch04.gif" width=426 height=123><br>
Figure 4
</td></tr></table></center>
box fill 0x9bcdfc color 0x9bcdfc wid (C10.e.x - C2.w.x) ht C6.height*1.5 at C6.c
box invis "test" fit with .sw at last box.sw]
box invis "Figure 4" big with .n at 0 below ALL.s
</verbatim>

The hypothetical scenario of figure 4 is this:  The project starts and
progresses to a point where (at check-in 2) 
Figure 4 diagrams the following scenario: the project starts and
progresses to a point where (at check-in 2)
it is ready to enter testing for its first release.
In a real project, of course, there might be hundreds or thousands of
check-ins before a project reaches this point, but for simplicity of
presentation we will say that the project is ready after check-in 2.
The project then splits into two branches that are used by separate
teams.  The testing team, using the blue branch, finds and fixes a few
bugs.  This is shown by check-ins 6 and 9.  Meanwhile the development
team, working on the top uncolored branch, 
bugs with check-ins 6 and 9.  Meanwhile, the development
team, working on the top uncolored branch,
is busy adding features for the second
release.  Of course, the development team would like to take advantage of
the bug fixes implemented by the testing team.  So periodically, the
the bug fixes implemented by the testing team, so periodically the
changes in the test branch are merged into the dev branch.  This is
shown by the dashed merge arrows between check-ins 6 and 7 and between
check-ins 9 and 10.

In both figures 2 and 4, check-in 2 has two children.  In figure 2,
we called this a "fork".  In diagram 4, we call it a "branch".  What is
the difference?  As far as the internal fossil data structures are
In both Figures 2 and 4, check-in 2 has two children.  In Figure 2,
we call this a "fork."  In diagram 4, we call it a "branch."  What is
the difference?  As far as the internal Fossil data structures are
concerned, there is no difference.  The distinction is in the intent.
In figure 2, the fact that check-in 2 has multiple children is an
accident that stems from concurrent development.  In figure 4, giving
check-in 2 multiple children is a deliberate act.  So, to a good
In Figure 2, the fact that check-in 2 has multiple children is an
accident that stems from concurrent development.  In Figure 4, giving
check-in 2 multiple children is a deliberate act.  To a good
approximation, we define forking to be by accident and branching to
be by intent.  Apart from that, they are the same.

When the fork is intentional, it helps humans to understand what is
going on if we <i>name</i> the forks. This is not essential to Fossil's
internal data model, but humans have trouble working with long-lived
branches identified only by the commit ID currently at its tip, being a
long string of hex digits.  Therefore, Fossil conflates two concepts:
branching as intentional forking and the naming of forks as branches.
They are in fact separate concepts, but since Fossil is intended to be
used primarily by humans, we combine them in Fossil's human user
interfaces.

<p class="blockquote">
<b>Key Distinction:</b> A branch is a <i>named, intentional</i> fork.
</p>

Unnamed forks <i>may</i> be intentional, but most of the time, they're
accidental and left unnamed.

Fossil offers two primary ways to create named, intentional forks,
a.k.a. branches. First:

<pre>
$ fossil commit --branch my-new-branch-name
</pre>

This is the method we recommend for most cases: it creates a branch as
part of a check-in using the version in the current checkout directory
as its basis. (This is normally the tip of the current branch, though
it doesn't have to be. You can create a branch from an ancestor check-in
on a branch as well.) After making this branch-creating
check-in, your local working directory is switched to that branch, so
that further check-ins occur on that branch as well, as children of the
tip check-in on that branch.

The second, more complicated option is:

<pre>
$ fossil branch new my-new-branch-name trunk
$ fossil update my-new-branch-name
$ fossil commit
</pre>

Not only is this three commands instead of one, the first of which is
longer than the entire simpler command above, you must give the second command
before creating any check-ins, because until you do, your local working
directory remains on the same branch it was on at the time you issued
the command, so that the commit would otherwise put the new material on
the original branch instead of the new one.

In addition to those problems, the second method is a violation of the
[https://en.wikipedia.org/wiki/You_aren%27t_gonna_need_it|YAGNI
Principle]. We recommend that you wait until you actually need the
branch before you create it using the first command above.

The "trunk" is just another named branch in Fossil. It is simply
the default branch name for the first check-in and every check-in made as
one of its direct descendants. It is special only in that it is Fossil's
default when it has no better idea of which branch you mean.


<h2 id="forking">Justifications For Forking</h2>

The primary cases where forking is justified over branching are all when
it is done purely in software in order to avoid losing information:

<ol>
    <li><p id="offline">By Fossil itself when two users check in children to the same
    leaf of a branch, as in Figure 2.
    <br><br>
    If the fork occurs because
    autosync is disabled on one or both of the repositories or because
    the user doing the check-in has no network connection at the moment
    of the commit, Fossil has no way of knowing that it is creating a
    fork until the two repositories are later synchronized.</p></li>

    <li><p id="dist-clone">By Fossil when the cloning hierarchy is more
    than 2 levels deep.
    <br><br>
    [./sync.wiki|Fossil's synchronization protocol] is a two-party
    negotiation; syncs don't automatically propagate up the clone tree
    beyond that. Because of that, if you have a master repository and
    Alice clones it, then Bobby clones from Alice's repository, a
    check-in by Bobby that autosyncs with Alice's repo will <i>not</i>
    also autosync with the master repo. The master doesn't get a copy of
    Bobby's check-in until Alice <i>separately</i> syncs with the master.
    If Carol cloned from the master repo and checks something in that
    creates a fork relative to Bobby's check-in, the master repo won't
    know about that fork until Alice syncs her repo with the master.
    Even then, realize that Carol still won't know about the fork until
    she subsequently syncs with the master repo.
    <br><br>
    One way to deal with this is to just accept it as a fact of using a
    [https://en.wikipedia.org/wiki/Distributed_version_control|Distributed
    Version Control System] like Fossil.
    <br><br>
    Another option, which we recommend you consider carefully, is to
    make it a local policy that check-ins be made only directly against the master
    repo or one of its immediate child clones so that the autosync
    algorithm can do its job most effectively. Any clones deeper than
    that should be treated as read-only and thus get a copy of the new
    state of the world only once these central repos have negotiated
    that new state. This policy avoids a class of inadvertent fork you
    might not need to tolerate.  Since [#bad-fork|forks on long-lived
    shared working branches can end up dividing a team's development
    effort], a team may easily justify this restriction on distributed
    cloning.</p></li>

    <li><p id="automation">You've automated Fossil, so you use
    <b>fossil commit --allow-fork</b> commands to prevent Fossil from
    refusing the check-in simply because it would create a fork.
    <br><br>
    If you are writing such a tool — e.g. a shell script to make
    multiple manipulations on a Fossil repo — it's better to make it
    smart enough to detect this condition and cope with it, such as
    by making a call to <b>[/help?cmd=update | fossil update]</b>
    and checking for a merge conflict. That said, if the alternative is
    losing information, you may feel justified in creating forks that an
    interactive user must later manually clean up with <b>fossil merge</b>
    commands.</p></li>
</ol>

That leaves only one case where we can recommend use of "--allow-fork"
by interactive users: when you're working on a personal branch so that
creating a dual-tipped branch isn't going to cause any other user an
inconvenience or risk [#bad-fork | inadvertently forking the development
effort]. In such a case, the lone developer working on that branch is
not confused, since the fork in development is intentional. Sometimes it
simply makes no sense to bother creating a name, cluttering the global
branch namespace, simply to convert an intentional fork into a "branch."
This is especially the case when the fork is short-lived.

There's a common generalization of that case: you're a solo developer,
so that the problems with branching vs forking simply don't matter. In
that case, feel free to use "--allow-fork" as much as you like.


<h2 id="fix">Fixing Forks</h2>

If your local checkout is on a forked branch, you can usually fix a fork
automatically with:

<pre>
$ fossil merge
</pre>

Normally you need to pass arguments to <b>fossil merge</b> to tell it
what you want to merge into the current basis view of the repository,
but without arguments, the command seeks out and fixes forks.


<h2>Tags And Properties</h2>
<h2 id="tags">Tags And Properties</h2>

Tags and properties are used in fossil to help express the intent, and
Tags and properties are used in Fossil to help express the intent, and
thus to distinguish between forks and branches.  Figure 5 shows the
same scenario as figure 4 but with tags and properties added:
same scenario as Figure 4 but with tags and properties added:

<center><table border=1 cellpadding=10 hspace=10 vspace=10>
<tr><td align="center">
<img src="branch05.gif" width=485 height=177><br>
Figure 5
</td></tr></table></center>
<verbatim type="pikchr center toggle">
ALL: [arrowht = 0.07
C1: circle rad 0.1in thickness 1.5px fill white "1"
arrow 40%
C2: circle same "2"
arrow same
circle same "3"
arrow same
C5: circle same "5"
arrow same
C7: circle same "7"
arrow same
C8: circle same "8"
arrow same
C10: circle same "10"
C4: circle same at 3rd circle-(0,.35) "4"
C6: circle same at (1/2 way between C5 and C7,C4) "6"
C9: circle same at (1/2 way between C8 and C10,C4) "9"
arrow from C2 to C4 chop
arrow from C4 to C6 chop
arrow from C6 to C9 chop
arrow dashed 0.03 from C6 to C7 chop
arrow same from C9 to C10
layer = 0
box fill 0x9bcdfc color 0x9bcdfc wid (C10.e.x - C2.w.x) ht C6.height*1.5 at C6.c
text " test" above ljust at last box.sw
box fill lightgray "branch=trunk" "sym-trunk" fit with .ne at C1-(0.05,0.3);
line color gray from last box.ne to C1 chop
box same "branch=test" "sym-test" "bgcolor=blue" "cancel=sym-trunk" fit \
   with .n at C4-(0,0.3)
line color gray from last box.n to C4 chop
box same "sym-release-1.0" "closed" fit with .n at C9-(0,0.3)
line color gray from last box.n to C9 chop]
box invis "Figure 5" big fit with .n at 0.2cm below ALL.s
</verbatim>

A <i>tag</i> is a name that is attached to a check-in.  A
<i>property</i> is a name/value pair.  Internally, fossil implements
<i>property</i> is a name/value pair.  Internally, Fossil implements
tags as properties with a NULL value.  So, tags and properties really
are much the same thing, and henceforth we will use the word "tag"
to mean either a tag or a property. 
to mean either a tag or a property.

A tag can be a one-time tag, a propagating tag or a cancellation tag. 
A tag can be a one-time tag, a propagating tag or a cancellation tag.
A one-time tag only applies to the check-in to which it is attached.  A
propagating tag applies to the check-in to which it is attached and also
to all direct descendants of that check-in.  A <i>direct descendant</i>
is a descendant through direct children.  Tags propagation does not
is a descendant through direct children.  Tag propagation does not
cross merges.  Tag propagation also stops as soon
as it encounters another check-in with the same tag.  A cancellation tag
is attached to a single check-in in order to either override a one-time
tag that was previously placed on that same check-in, or to block
tag propagation from an ancestor.

Every repository is created with a single empty check-in that has two
propagating tags.  In figure 5, that initial empty check-in is check-in 1.
The <b>branch</b> tag tells (by its value) 
what branch the check-in is a member of.
The default branch is called "trunk".  All tags that begin with "<b>sym-</b>"
The initial check-in of every repository has two propagating tags.  In
Figure 5, that initial check-in is check-in 1.  The <b>branch</b> tag
tells (by its value)  what branch the check-in is a member of.
The default branch is called "trunk."  All tags that begin with "<b>sym-</b>"
are symbolic name tags.  When a symbolic name tag is attached to a
check-in, that allows you to refer to that check-in by its symbolic
name rather than by its 40-character SHA1 hash name.  When a symbolic name
name rather than by its hexadecimal hash name.  When a symbolic name
tag propagates (as does the <b>sym-trunk</b> tag) then referring to that
name is the same as referring to the most recent check-in with that name.
Thus the two tags on check-in one cause all decendents to be in the
"trunk" branch and to have the symbolic name "trunk".
Thus the two tags on check-in 1 cause all descendants to be in the
"trunk" branch and to have the symbolic name "trunk."

Check-in 4 has a <b>branch</b> tag which changes the name of the branch
to "test".  The branch tag on check-in 4 propagates to check-ins 6 and 9.
to "test."  The branch tag on check-in 4 propagates to check-ins 6 and 9.
But because tag propagation does not follow merge links, the <b>branch=test</b>
tag does not propagate to check-ins 7, 8, or 10.  Note also that the
<b>branch</b> tag on check-in 4 blocks the propagation of <b>branch=trunk</b>
so that it cannot reach check-ins 6 or 9.  This causes check-ins 4, 6, and
9 to be in the "test" branch and all others to be in the "trunk" branch.

Check-in 4 also has a <b>sym-test</b> tag, which gives the symbolic name
"test" to check-ins 4, 6, and 9.  Because tags do not propagate across
merges, check-ins 7, 8, and 10 do not inherit the <b>sym-test</b> tag and
are hence not known by the name "test".
To prevent the <b>sym-trunk</b> tag from propagating from check-in 1 
into check-ins 4, 6, and 9, there is a cancellation tag for 
<b>sym-trunk</b> on check-in 4.  The net effect of all of this is that
are hence not known by the name "test."
To prevent the <b>sym-trunk</b> tag from propagating from check-in 1
into check-ins 4, 6, and 9, there is a cancellation tag for
<b>sym-trunk</b> on check-in 4.  The net effect is that
check-ins on the trunk go by the symbolic name of "trunk" and check-ins
that are on the test branch go by the symbolic name "test".
on the test branch go by the symbolic name "test."

The <b>bgcolor=blue</b> tag on check-in 4 causes the background color
of timelines to be blue for check-in 4 and its direct descendants.

Figure 5 also shows two one-time tags on check-in 9.  (The diagram does
not make a graphical distinction between one-time and propagating tags.)
The <b>sym-release-1.0</b> tag means that check-in 9 can be referred to
using the more meaningful name "release-1.0".  The <b>closed</b> tag means
that check-in 9 is a "closed leaf".  A closed leaf is a leaf that intended
to never have any direct children.
using the more meaningful name "release-1.0."  The <b>closed</b> tag means
that check-in 9 is a "closed leaf."  A closed leaf is a leaf that should
never have direct children.

<h2 id="bad-fork">How Can Forks Divide Development Effort?</h2>

[#dist-clone|Above], we stated that forks carry a risk that development
effort on a branch can be divided among the forks. It might not be
immediately obvious why this is so. To see it, consider this swim lane
diagram:

<verbatim type="pikchr center toggle">
    $laneh = 0.75

ALL: [
    # Draw the lanes
    down
    box width 3.5in height $laneh fill 0xacc9e3
    box same fill 0xc5d8ef
    box same as first box
    box same as 2nd box
    line from 1st box.sw+(0.2,0) up until even with 1st box.n \
      "Alan" above aligned
    line from 2nd box.sw+(0.2,0) up until even with 2nd box.n \
      "Betty" above aligned
    line from 3rd box.sw+(0.2,0) up until even with 3rd box.n \
      "Charlie" above aligned
    line from 4th box.sw+(0.2,0) up until even with 4th box.n \
       "Darlene" above aligned

    # fill in content for the Alice lane
    right
A1: circle rad 0.1in at end of first line + (0.2,-0.2) \
       fill white thickness 1.5px "1" 
    arrow right 50%
    circle same "2"
    arrow right until even with first box.e - (0.65,0.0)
    ellipse "future" fit fill white height 0.2 width 0.5 thickness 1.5px
A3: circle same at A1+(0.8,-0.3) "3" fill 0xc0c0c0
    arrow from A1 to last circle chop "fork!" below aligned

    # content for the Betty lane
B1: circle same as A1 at A1-(0,$laneh) "1"
    arrow right 50%
    circle same "2"
    arrow right until even with first ellipse.w
    ellipse same "future"
B3: circle same at A3-(0,$laneh) "3"
    arrow right 50%
    circle same as A3 "4"
    arrow from B1 to 2nd last circle chop

    # content for the Charlie lane
C1: circle same as A1 at B1-(0,$laneh) "1"
    arrow 50%
    circle same "2"
    arrow right 0.8in "goes" "offline"
C5: circle same as A3 "5"
    arrow right until even with first ellipse.w \
      "back online" above "pushes 5" below "pulls 3 &amp; 4" below 
    ellipse same "future"

    # content for the Darlene lane
D1: circle same as A1 at C1-(0,$laneh) "1"
    arrow 50%
    circle same "2"
    arrow right until even with C5.w
    circle same "5"
    arrow 50%
    circle same as A3 "6"
    arrow right until even with first ellipse.w
    ellipse same "future"
D3: circle same as B3 at B3-(0,2*$laneh) "3"
    arrow 50%
    circle same "4"
    arrow from D1 to D3 chop
]
box invis "Figure 6" big fit with .n at 0.2cm below ALL.s
</verbatim>

This is a happy, cooperating team. That is an important restriction on
our example, because you must understand that this sort of problem can
arise without any malice, selfishness, or willful ignorance in sight.
All users on this diagram start out with the same view of the
repository, cloned from the same master repo, and all of them are
working toward their shared vision of a unified future.

All users, except possibly Alan, start out with the same two initial
check-ins in their local working clones, 1 & 2. It might be that Alan
starts out with only check-in 1 in his local clone, but we'll deal with
that detail later.

It doesn't matter which branch this happy team is working on, only that
our example makes the most sense if you think of it as a long-lived shared
working branch like trunk. Each user makes
only one check-in, shaded light gray in the diagram.

<h3 id="bf-alan">Step 1: Alan</h3>

Alan sets the stage for this problem by creating a
fork from check-in 1 as check-in 3. How and why Alan did this doesn't
affect what happens next, though we will walk through the possible cases
and attempt to assign blame [#post-mortem|in the <i>post mortem</i>].
For now, you can assume that Alan did this out of unavoidable ignorance.

<h3 id="bf-betty">Step 2: Betty</h3>

Because Betty's local clone is autosyncing with
the same upstream repository as Alan's clone, there are a number of ways
she can end up seeing Alan's check-in 3 as the latest on that branch:

<ol>
    <li><p>The working check-out directory she's using at the moment was
    on a different branch at the time Alan made check-in 3, so Fossil
    sees that as the tip at the time she switches her working directory
    to that branch with a <b>fossil update $BRANCH</b> command. (There is an
    implicit autosync in that command, if the option was enabled at the
    time of the update.)</p></li>

    <li><p>The same thing, only in a fresh checkout directory with a
    <b>[/help?cmd=open | fossil open $REPO $BRANCH]</b> command.</p></li>

    <li><p>Alan makes his check-in 3 while Betty has check-in 1 or 2 as
    the tip in her local clone, but because she's working with an
    autosync'd connection to the same upstream repository as Alan, on
    attempting what will become check-in 4, she gets the "would fork"
    message from <b>fossil commit</b>, so she dutifully updates her clone
    and tries again, moving her work to be a child of the new tip,
    check-in 3. (If she doesn't update, she creates a <i>second</i>
    fork, which simply complicates matters beyond what we need here for
    our illustration.)</p></li>
</ol>

For our purposes here, it doesn't really matter which one happened. All
that matters is that Alan's check-in 3 becomes the parent of Betty's
check-in 4 because it was the newest tip of the working branch at the
time Betty does her check-in.

<h3 id="bf-charlie">Step 3: Charlie</h3>

Meanwhile, Charlie went offline after syncing
his repo with check-in 2 as the latest on that branch. When he checks
his changes in, it is as a child of 2, not of 4, because Charlie doesn't
know about check-ins 3 & 4 yet.  He does this at an absolute wall clock
time <i>after</i> Alan and Betty made their check-ins, so when Charlie
comes back online and pushes his check-in 5 to the master repository and
learns about check-ins 3 and 4 during Fossil sync, Charlie inadvertently
revives the other side of the fork.

<h3 id="bf-darlene">Step 4: Darlene</h3>

Darlene sees all of this, because she joins in
on the work on this branch after Alan, Betty, and Charlie made their
check-ins and pushed them to the master repository. She's taking one of
the same three steps as we [#bf-betty|outlined for Betty above].
Regardless of her path to this view, it happens after Charlie pushed his
check-in 5 to the master repo, so Darlene sees that as the latest on the
branch, causing her work to be saved as a child of check-in 5, not of
check-in 4, as it would if Charlie didn't come back online and sync
before Darlene started work on that branch.

<h3 id="post-mortem">Post Mortem</h3>

The end result of all of this is that even though everyone makes only one check-in
and no one disables autosync without genuine need,
half of the check-ins end up on one side of the fork and half on
the other.

A future user — his mother calls him Edward, but please call him Eddie —
can then join in on the work on this branch and end up on <i>either</i> side of
the fork. If Eddie joins in with the state of the repository as drawn
above, he'll end up on the top side of the fork, because check-in 6 is
the latest, but if Alan or Betty makes a seventh check-in to that branch
first, it will be as a child of check-in 4 since that's the version in
their local check-out directories. Since that check-in 7 will then be the latest,
Eddie will end up on the bottom side of the fork instead.

In all of this, realize that neither side of the fork is obviously
"correct." Every participant was doing the right thing by their own
lights at the time they made their lone check-in.

Who, then, is to blame?

We can only blame the consequences of creating the fork on Alan if he
did so on purpose, as by passing "--allow-fork" when creating a check-in
on a shared working branch. Alan might have created it inadvertently by
going offline while check-in 1 was the tip of the branch in his local
clone, so that by the time he made his check-in 3, check-in 2 had
arrived at the shared parent repository from someone else. (Francine?)
When Alan rejoins the network and does an autosync, he learns about
check-in 2. Since his #3 is already checked into his local clone because
autosync was off or blocked, the sync creates an unavoidable fork.  We
can't blame either Alan or Francine here: they were both doing the right
thing given their imperfect view of the state of the global situation.

The same is true of Betty, Charlie, and Darlene. None of them tried to
create a fork, and none of them chose a side in this fork to participate
in. They just took Fossil's default and assumed it was correct.

The only blame I can assign here is on any of these users who believed
forks couldn't happen before this did occur, and I blame them only for
their avoidable ignorance. (You, dear reader, have been ejected from
that category by reading this very document.) Any time someone can work
without getting full coordination from every other clone of the repo,
forks are possible.  Given enough time, they're all but inevitable. This
is a general property of DVCSes, not just of Fossil.

This sort of consequence is why forks on shared working branches are
bad, which is why [./concepts.wiki#workflow|Fossil tries so hard to avoid them], why it warns you
about it when they do occur, and why it makes it relatively [#fix|quick and
painless to fix them] when they do occur.


<h2>Review Of Terminology</h2>

Here is a list of definitions of key terms:


<blockquote><dl>
<dl>
<dt><b>Branch</b></dt>
<dd><p>A branch is a set of check-ins that have the same value for their
branch property.</p></dd>
<dd><p>A branch is a set of check-ins with the same value for their
"branch" property.</p></dd>
<dt><b>Leaf</b></dt>
<dd><p>A leaf is a check-in that has no children in the same branch.</p></dd>
<dd><p>A leaf is a check-in with no children in the same branch.</p></dd>
<dt><b>Closed Leaf</b></dt>
<dd><p>A closed leaf is leaf that has the <b>closed</b> tag.  Such leaves
are intented to never be extended with descendents and hence are omitted
<dd><p>A closed leaf is any leaf with the <b>closed</b> tag.  These leaves
are intended to never be extended with descendants and hence are omitted
from lists of leaves in the command-line and web interface.</p></dd>
<dt><b>Open Leaf</b></dt>
<dd><p>A open leaf is a leaf that is not closed.</p></dd>
<dt><b>Fork</b></dt>
<dd><p>A fork occurs when a check-in has two or more direct (non-merge)
<dd><p>A fork is when a check-in has two or more direct (non-merge)
children in the same branch.</p></dd>
<dt><b>Branch Point</b></dt>
<dd><p>A branch point occurs when a check-in has two or more direct (non-merge)
children in the different branches.  A branch point is similar to a fork,
children in different branches.  A branch point is similar to a fork,
except that the children are in different branches.</p></dd>
</dl></blockquote>
</dl>

Check-in 4 of figure 3 is not a leaf because it has a child (check-in 5)
in the same branch.  Check-in 9 of figure 5 also has a child (check-in 10)
Check-in 4 of Figure 3 is not a leaf because it has a child (check-in 5)
in the same branch.  Check-in 9 of Figure 5 also has a child (check-in 10)
but that child is in a different branch, so check-in 9 is a leaf.  Because
of the <b>closed</b> tag check-in 9, it is a closed leaf.
of the <b>closed</b> tag on check-in 9, it is a closed leaf.

Check-in 2 of figure 3 is considered a "fork"
because it has two children in the same branch.  Check-in 2 of figure 5
Check-in 2 of Figure 3 is considered a "fork"
because it has two children in the same branch.  Check-in 2 of Figure 5
also has two children, but each child is in a different branch, hence in
figure 5, check-in 2 is considered a "branch point".
Figure 5, check-in 2 is considered a "branch point."

<h2>Differences With Other DVCSes</h2>

<h3 id="single">Single DAG</h3>

Fossil keeps all check-ins on a single DAG.  Branches are identified with
tags.  This means that check-ins can be freely moved between branches
simply by altering their tags.

Most other DVCSes maintain a separate DAG for each branch.

<h3 id="unique">Branch Names Need Not Be Unique</h3>

Fossil does not require that branch names be unique, as in some VCSes,
most notably Git. Just as with unnamed branches (which we call forks)
Fossil resolves such ambiguities using the timestamps on the latest
check-in in each branch. If you have two branches named "foo" and you say
<b>fossil update foo</b>, you get the tip of the "foo" branch with the most
recent check-in.

This fact is helpful because it means you can reuse branch names, which
is especially useful with utility branches.  There are several of these
in the SQLite and Fossil repositories: "broken-build," "declined,"
"mistake," etc. As you might guess from these names, such branch names
are used in renaming the tip of one branch to shunt it off away from the
mainline of that branch due to some human error. (See
<b>[/help?cmd=amend | fossil
amend]</b> and the Fossil UI check-in amendment features.) This is a
workaround for Fossil's [./shunning.wiki|normal inability to forget
history]: we usually don't want to actually <i>remove</i> history, but
would like to sometimes set some of it aside under a new label.

Because some VCSes can't cope with duplicate branch names, Fossil
collapses such names down on export using the same time stamp based
arbitration logic, so that only the branch with the newest check-in gets
the branch name in the export.

All of the above is true of tags in general, not just branches.
Changes to www/bugtheory.wiki.
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<title>Fossil Documentation</title>
<h1>Bug-Tracking In <a href="index.wiki">Fossil</a></h1>
<title>Bug-Tracking In Fossil</title>
<h2>Introduction</h2>

A bug-report in fossil is called a "ticket".  Tickets are tracked
separately from code check-ins.

Some other distributed bug-tracking systems store tickets as files within
the source tree and thereby leverage the syncing and merging capabilities
of the versioning system to sync and merge tickets.  This approach is
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      be permitted to create tickets.

Recall that a fossil repository consists of an
unordered collection of <i>artifacts</i>.  (See the
<a href="fileformat.wiki">file format document</a> for details.)
Some artifacts have a special format, and among those are
<a href="fileformat.wiki#tktchng">Ticket Change Artifacts</a>.
One or more ticket change artifacts are associated with each 
One or more ticket change artifacts are associated with each
ticket.  A ticket is created by a ticket change artifact.
Each subsequent modification of the ticket is a separate artifact.

The "push", "pull", and "sync" algorithms share ticket change artifacts
between repositories in the same way as every other artifact.  In fact,
the sync algorithm has no knowledge of the meaning of the artifacts it
is syncing.  As far as the sync algorithm is concerned, all artifacts are
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to repopulate the table using the new column names.  Note that the TICKET
table schema and content is part of the local state of a repository
and is not shared with other repositories during a sync, push, or pull.

Each repository also defines scripts used to generate web pages for
creating new tickets, viewing existing tickets, and modifying an
existing ticket.  These scripts consist of HTML with an embedded
scripts written an a Tcl-like language called "TH1".  Every new fossil
repository is created with default scripts.  Paul Ruizendaal has written
scripts written in a Tcl-like language called "[./th1.md|TH1]".  Every
new fossil repository is created with default scripts. Administrators
documentation on the TH1 language that is available at
[http://www.sqliteconcepts.org/THManual.pdf].  Administrators wishing to
customize their ticket entry, viewing, and editing screens should
modify the default scripts to suit their needs.  These screen generator
scripts are part of the local state of a repository and are not shared
with other repositories during a sync, push, or pull.
wishing to customize their ticket entry, viewing, and editing screens
should modify the default scripts to suit their needs.  These screen
generator scripts are part of the local state of a repository and are
not shared with other repositories during a sync, push, or pull.

<i>To be continued...</i>
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<title>Building and Installing Fossil</title>
<nowiki>
<title>Compiling and Installing Fossil</title>

<h2>0.0 Using A Pre-compiled Binary</h2>

[/uv/download.html|Pre-compiled binaries] are available for recent
releases. Just download
the appropriate executable for your platform
and put it on your $PATH.
To uninstall, simply delete the executable.
To upgrade from an older release, just overwrite the older binary with
the newer one.
<p>This page describes how to build and install Fossil.  The
whole process is designed to be very easy.</p>

For details about how those binaries are built, see
[/wiki?name=Release+Build+How-To | the Release Build How-To wiki page].


<h2>0.0 Using A Pre-compiled Binary</h2>
<h2>0.1 Executive Summary</h2>

Building and installing is very simple.  Three steps:
<p>You can skip steps 1.0 and 2.0 below by downloading
a <a href="http://www.fossil-scm.org/download.html">pre-compiled binary</a>
appropriate for your platform.  If you use a pre-compiled binary
jump immediate to step 3.0.</p>

<ol>
<li> Download and unpack a source tarball or ZIP.
<li> <b>./configure; make</b>
<li> Move the resulting "fossil" or "fossil.exe" executable to someplace on
your $PATH.
</ol>

<hr>

<h2>1.0 Obtaining The Source Code</h2>

<p>Fossil is self-hosting, so you can obtain a ZIP archive containing
a snapshot of the latest version directly from fossil's own fossil
repository.  Follow these steps:</p>
Fossil is self-hosting, so you can obtain a ZIP archive or tarball
containing a snapshot of the <em>latest</em> version directly from
Fossil's own fossil repository. Additionally, source archives of
<em>released</em> versions of
fossil are available from the [/uv/download.html|downloads page].
To obtain a development version of fossil, follow these steps:

<ol>
<li><p>Pointer your web browser at
<li>Point your web browser to [https://fossil-scm.org/]</li>
<a href="http://www.fossil-scm.org/">
http://www.fossil-scm.org/</a>.  Click on the "Login" menu button.</p></li>

<li><p>Log in as anonymous.  The password is shown on screen.
The reason for requiring this login is to prevent spiders from
walking the entire website, downloading ZIP archives
of every historical version, and thereby soaking up all our bandwidth.</p></li>

<li><p>Click on the 
<li>Click on the [/timeline|Timeline]
<a href="http://www.fossil-scm.org/fossil/timeline">Timeline</a> or
<a href="http://www.fossil-scm.org/fossil/leaves">Leaves</a> link at
the top of the page.</p></li>
link at the top of the page.</li>

<li><p>Select a version of of fossil you want to download.  Click on its
link.  Note that you must successfully log in as "anonymous" in step 1
<li>Select a version of Fossil you want to download.  The latest
version on the trunk branch is usually a good choice.  Click on its
link.</li>
above in order to see the link to the detailed version information.</p></li>

<li><p>Finally, click on the
"Zip Archive" link.  This link will build a ZIP archive of the 
complete source code and download it to your browser.
<li>Finally, click on one of the
"Zip Archive" or "Tarball" links, according to your preference.
These links will build a ZIP archive or a gzip-compressed tarball of the
complete source code and download it to your computer.</li>
</ol>

<h2>Aside: Is it really safe to use an unreleased development version of
the Fossil source code?</h2>

Yes!  Any check-in on the
[/timeline?t=trunk | trunk branch] of the Fossil
[https://fossil-scm.org/ | self-hosting repository]
will work fine.  (Dodgy code is always on a branch.)  In the unlikely
event that you pick a version with a serious bug, it still won't
clobber your files.  Fossil uses several
[./selfcheck.wiki | self-checks] prior to committing any
repository change that prevent loss-of-work due to bugs.

The Fossil [./selfhost.wiki | self-hosting repositories], especially
the one at [https://fossil-scm.org/home], usually run a version
of trunk that is less than a week or two old.  Look at the bottom
left-hand corner of this screen (to the right of "This page was
generated in...") to see exactly which version of Fossil is
rendering this page.  It is always safe to use whatever version
of the Fossil code you find running on the main Fossil website.

<h2>2.0 Compiling</h2>

<p>Follow these steps to compile:</p>

<ol>
<li value="6">
<p>Create a directory to hold the source code.  Then unzip the
ZIP archive you downloaded into that directory.  You should be
in the top-level folder of that directory</p></li>
<li value="5">
Unpack the ZIP or tarball you downloaded then
<b>cd</b> into the directory created.</li>

<li><i>(Optional, Debian-compatible Linux only)</i>
Make sure you have all the necessary tools and libraries at hand by running:
<b>sudo apt install tcl-dev tk libssl-dev zlib1g-dev</b>.

<li><i>(Optional, Unix only)</i>
Run <b>./configure</b> to construct a makefile.

<ol type="a">
<li>
The build system for Fossil on Unix-like systems assumes that the
OpenSSL development and runtime files are available on your system,
because unprotected repositories are trivial to attack otherwise.
Indeed, some public Fossil repositories — including Fossil's own — today
run in an HTTPS-only mode, so that you can't even do an anonymous clone
from them without using the TLS features added to Fossil by OpenSSL. To
weaken that stance could allow a
[https://en.wikipedia.org/wiki/Man-in-the-middle_attack|man in the
middle attack], such as one that substitutes malicious code into your
Fossil repository clone.

You can force the Fossil build system to avoid searching for, building
against, and linking to the OpenSSL library by passing
<b>--with-openssl=none</b> to the <tt>configure</tt> script.

If you do not have the OpenSSL development libraries on your system,
we recommend that you install them, typically via your OS's package
manager. The Fossil build system goes to a lot of effort to seek these
out wherever they may be found, so that is typically all you need to
do.

For more advanced use cases, see the [./ssl.wiki#openssl-bin|OpenSSL
discussion in the "TLS and Fossil" document].
</li>

<li>
To build a statically linked binary, you can <i>try</i> adding
the <b>--static</b> option, but
[https://stackoverflow.com/questions/3430400/linux-static-linking-is-dead
| it may well not work]. If your platform of choice is affected by this,
the simplest workaround we're aware of is to build a Fossil container,
then [./containers.md#static | extract the static executable from it].
</li>

<li>
To enable the native [./th1.md#tclEval | Tcl integration feature] feature,
add the <b>--with-tcl=1</b> and <b>--with-tcl-private-stubs=1</b> options.
</li>

<li>
Other configuration options can be seen by running
<b>./configure --help</b>
</li>
</ol>

<li>Run "<b>make</b>" to build the "fossil" or "fossil.exe" executable.
The details depend on your platform and compiler.</li>

<ol type="a">
<li><i>Unix</i> → the configure-generated Makefile should work on
all Unix and Unix-like systems.  Simply type "<b>make</b>".</li>

<li><i>Unix without running "configure"</i> → if you prefer to avoid
running configure, you can also use: <b>make -f Makefile.classic</b>.  You may
want to make minor edits to Makefile.classic to configure the build for your
system.</li>

<li><i>MinGW / MinGW-w64</i> → The best-supported path is to build
via the MinGW specific Makefile under a POSIX build of GNU make:
"<b>make -f win/Makefile.mingw</b>".</li>

There is limited support for building under MinGW's native Windows port
of GNU Make instead by defining the <tt>USE_WINDOWS=1</tt> variable, but
it's better to build under MSYS, Cygwin, or WSL on Windows since this
mode doesn't take care of cases such as the "openssl" target, which
depends on <tt>sed</tt>. We've gone as far down this path as is
practical short of breaking cross-compilation under Linux, macOS, and so
forth, as we'd have to do to make everything work under
<tt>cmd.exe</tt>.
<li><p><b>(Optional:)</b>
Edit the Makefile to set it up like you want.  You probably do not
need to do anything.  Do not be intimidated:  There are less than 10
variables in the makefile that can be changed.  The whole Makefile
is only a few dozen lines long and most of those lines are comments.</p>

Unless you're building under MSYS where commands like "<tt>gcc</tt>"
give MinGW's GCC and not some other version, you will need to make minor
edits to win/Makefile.mingw to configure the cross-compilation
environment. It should suffice to switch to one of the predefined
<tt>PREFIX</tt> values, causing the build to be done using
"<tt>x86_64-w64-mingw32-gcc</tt>" for example, yielding a 64-bit native
Windows binary.

To enable the native [./th1.md#tclEval | Tcl integration feature], use a
command line like the following (all on one line):

<b>make -f win/Makefile.mingw FOSSIL_ENABLE_TCL=1 FOSSIL_ENABLE_TCL_STUBS=1 FOSSIL_ENABLE_TCL_PRIVATE_STUBS=1</b>

Alternatively, running <b>./configure</b> under MSYS should give a
suitable top-level Makefile. However, options passed to configure that are
not applicable on Windows may cause the configuration or compilation to fail
(e.g. fusefs, internal-sqlite, etc).

<li><i>MSVC</i> → Use the MSVC makefile.</li>

<em>NB:</em> Run the following <code>nmake</code> commands from a "x64 Native
Tools Command Prompt"; <code>buildmsvc.bat</code> is able to automatically load
the build tools (x64 by default, pass "x86" as the first argument to use the
x86 tools), so it can be called from a normal command prompt.
<li><p>Type "<b>make</b>"

First, change to the "win/" subdirectory ("<b>cd win</b>"), then run
"<b>nmake /f Makefile.msc</b>".<br><br>Alternatively, the batch
file "<b>win\buildmsvc.bat</b>" may be used and it will attempt to
detect and use the latest installed version of MSVC.<br><br>To enable
the optional <a href="https://www.openssl.org/">OpenSSL</a> support,
first <a href="https://www.openssl.org/source/">download the official
source code for OpenSSL</a> and extract it to an appropriately named
"<b>openssl</b>" subdirectory within the local
[/tree?ci=trunk&name=compat | compat] directory then make sure that some recent
<a href="http://www.perl.org/">Perl</a> binaries are installed locally,
and finally run one of the following commands:
<pre>
nmake /f Makefile.msc FOSSIL_ENABLE_SSL=1 FOSSIL_BUILD_SSL=1 PERLDIR=C:\full\path\to\Perl\bin
</pre>
<pre>
buildmsvc.bat FOSSIL_ENABLE_SSL=1 FOSSIL_BUILD_SSL=1 PERLDIR=C:\full\path\to\Perl\bin
</pre>
To enable the optional native [./th1.md#tclEval | Tcl integration feature],
run one of the following commands or add the &quot;FOSSIL_ENABLE_TCL=1&quot;
argument to one of the other NMAKE command lines:
<pre>
nmake /f Makefile.msc FOSSIL_ENABLE_TCL=1
</pre>
<pre>
buildmsvc.bat FOSSIL_ENABLE_TCL=1
</pre>

<li><i>Cygwin</i> → The same as other Unix-like systems. It is
recommended to configure using: "<b>configure --disable-internal-sqlite</b>",
making sure you have the "libsqlite3-devel" , "zlib-devel" and
"openssl-devel" packages installed first.</li>
</ol>
</ol>

<h2>3.0 Installing</h2>

<ol>
<li value="9">
<p>The finished binary is named "fossil".  Put this binary in a 
The finished binary is named "fossil" (or "fossil.exe" on Windows).
Put this binary in a
directory that is somewhere on your PATH environment variable.
It does not matter where.</p>
It does not matter where.
</li>

<li>
<b>(Optional:)</b>
To uninstall, just delete the binary.
</li>
</ol>

<h2>4.0 Additional Considerations</h2>

<ul>
<li>
  If the makefiles that come with Fossil do not work for
  you, or for some other reason you want to know how to build
  Fossil manually, then refer to the
  [./makefile.wiki | Fossil Build Process] document which describes
  in detail what the makefiles do behind the scenes.
</li>

<li>
  The fossil executable is self-contained and stand-alone and usually
  requires no special libraries or other software to be installed.  However,
  the "--tk" option to the [/help/diff|diff command] requires that Tcl/Tk
  be installed on the local machine.  You can get Tcl/Tk from
  [http://www.activestate.com/activetcl|ActiveState].
</li>

<li>
  To build on older Macs (circa 2002, MacOS 10.2) edit the Makefile
  generated by configure to add the following lines:
  <pre>
  TCC += -DSQLITE_WITHOUT_ZONEMALLOC
  TCC += -D_BSD_SOURCE
  TCC += -DWITHOUT_ICONV
  TCC += -Dsocketlen_t=int
  TCC += -DSQLITE_MAX_MMAP_SIZE=0
  </pre>
</li>
</ul>
<p><b>(Optional:)</b>
To uninstall, just delete the binary.</p>
</ol>


<h2 id="docker" name="oci">5.0 Building a Docker Container</h2>

The information on building Fossil inside an
[https://opencontainers.org/ | OCI container] is now in
[./containers.md | a separate document].

This includes the instructions on using the OCI container as an
expedient intermediary for building a statically-linked Fossil binary on
modern Linux platforms, which otherwise make this difficult.


<h2>6.0 Building on/for Android</h2>

<h3>6.1 Cross-compiling from Linux</h3>

The following instructions for building Fossil for Android via Linux,
without requiring a rooted OS, are adapted from
[forum:/forumpost/e0e9de4a7e | a forum post].

On the development machine, from the fossil source tree:

<pre><code>export CC=$NDK_PATH/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi21-clang
./configure --with-openssl=none
make
</code></pre>


On the Android device, enable the <em>USB debugging</em> option from
Developer menu in Device Options. Connect the device to the development
system with USB. If it's configured and connected properly,
the device should show up in the output of <code>adb devices</code>:

<pre><code>sudo adb devices
</code></pre>

Copy the resulting fossil binary onto the device...

<pre><code>sudo adb push fossil /data/local/tmp
</code></pre>

And run it from an <code>adb</code> shell:

<pre><code>sudo adb shell
&gt; cd /data/local/tmp
# Fossil requires a HOME directory to work with:
&gt; export HOME=$PWD
&gt; export PATH=$PWD:$PATH
&gt; fossil version
This is fossil version 2.11 &#91;e5653a4ceb] 2020-03-26 18:54:02 UTC
</code></pre>

The output might, or might not, include warnings such as:

<pre><code>WARNING: linker: ./fossil: unused DT entry: type 0x6ffffef5 arg 0x1464
WARNING: linker: ./fossil: unused DT entry: type 0x6ffffffe arg 0x1ba8
WARNING: linker: ./fossil: unused DT entry: type 0x6fffffff arg 0x2
</code></pre>

The source of such warnings is not 100% certain.
Some information about these (reportedly harmless) warnings can
be found
[https://stackoverflow.com/a/41900551 | on this StackOverflow post].


<a id='fuzzer'></a>
<h2>7.0 Building for Fuzz Testing</h2>

This feature is primarily intended for fossil's developers and may
change at any time. It is only known to work on Linux systems and has
been seen to work on x86/64 and ARM.

Fossil has builtin support for processing specific features using
<tt>libfuzzer</tt>. The features which can be tested this way are
found in the help text for the [/help?cmd=test-fuzz|test-fuzz
command].

Fuzzing requires:

  *  Customizing the build of fossil a small bit.
  *  The clang C compiler.
  *  libfuzzer. On Ubuntu-derived systems, it can be installed with
     <tt>apt install libfuzzer-XYZ</tt>, where XYZ is a version number
     (several versions may be available on any given system)


First, modify the top-level <tt>Makefile.in</tt>:

  *  Extend the <tt>TCCFLAGS</tt> variable with: <tt>-fsanitize=fuzzer
   -DFOSSIL_FUZZ</tt> (and see [/finfo/src/fuzz.c | src/fuzz.c] for
   more options).
  *  Rename <tt>APPNAME</tt> from <tt>fossil</tt> to <tt>fossil-fuzz</tt>.

Then rebuild:

<pre></code>$ make clean
$ ./configure CC=/path/to/clang
$ make
</code></pre>

If clang is your default compiler, the <tt>CC</tt> configure option is
not required.

The resulting <tt>fossil-fuzz</tt> binary differs from the standard
one primarily in that it runs the <tt>test-fuzz</tt> command by
default. It needs to be told what to fuzz and needs to be given a
directory of input files to seed the fuzzer with:


<pre></code>$ mkdir cases
  # Copy input files into ./cases. e.g. when fuzzing the markdown
  # processor, copy any to-be-tested .md files into that directory.
  # Then start the fuzzer:
$ ./fossil-fuzz --fuzztype markdown cases
</code></pre>

As it works, it writes its mutated test files into the test-input
directory, each one named in the form of a hash. When it finds a
problem it will produce a stack trace for the offending code, will
output the name of the file which triggered the crash (named
<tt>cases/SOME_HASH</tt>) and may, depending on the nature of the
problem, produce a file named <tt>crash-SOMETHING</tt>.  In theory the
crash file can be fed directly back into the fuzzer to reproduce the
problem:

<pre></code>$ ./fossil-fuzz --fuzztype markdown crash-SOMETHING
</code></pre>

But whether or not it will genuinely crash may depend on static
app-level state which might not trigger the crash when running an
individual test.

For a detailed information about the fuzzer's flags and features, see:

  *  [https://llvm.org/docs/LibFuzzer.html]
  *  [https://github.com/google/fuzzing/blob/master/tutorial/libFuzzerTutorial.md]
 
Flags for the fuzzer can be passed directly to fossil,
e.g. <tt>-jobs=4</tt> to start four fuzzer jobs in parallel, but doing
so may cause the fuzzer to <em>strip the --fuzztype flag</em>, leading
to it testing the wrong thing. When passing on fuzzer-specific flags
along with <tt>--fuzztype</tt>, be sure to check your system's process
list to ensure that your <tt>--fuzztype</tt> flag is there.


<a id='wasm'></a>
<h2>8.0 Building WebAssembly Components</h2>

Fossil uses one component built as
[https://developer.mozilla.org/en-US/docs/WebAssembly | WebAssembly]
a.k.a. WASM. Because compiling WASM code requires non-trivial
client-side tooling, the repository includes compiled copies of these
pieces. Most Fossil hackers should never need to concern themselves
with the WASM parts, but this section describes how to for those who
want or need to do so.

<strong>The bits described in this section are necessary when updating
<tt>extsrc/pikchr.c</tt></strong> from the upstream source, or the
fossil binary will use a different version of pikchr than
[/pikchrshow] does (as the latter runs the WASM build of pikchr).

These instructions have only ever been tested on Linux systems. They
"should" work on any Unix-like system supported by Emscripten. The
fossil makefiles for Windows builds <em>do not</em> include any of the
WASM-related components (patches to add that would be welcomed, of
course).

The first step is to configure the tree with support for
[https://emscripten.org/|Emscripten]. This requires that the system
has the Emscripten SDK (a.k.a. emsdk) installed, as documented at:

[https://emscripten.org/docs/getting_started/downloads.html]

For instructions on keeping the SDK up to date, see:

[https://emscripten.org/docs/tools_reference/emsdk.html]

<div class="sidebar">Getting Emscripten up and running is trivial and
painless, at least on Linux systems, but the installer downloads
many hundreds of megabytes of tools and dependencies, all of which
will be installed under the single SDK directory (as opposed to
being installed at the system level). It does, however, require
that python3 be installed at the system level and it can
optionally make use of a system-level cmake for certain tasks
unrelated to how fossil uses the SDK.</div>

After installing the SDK, configure the fossil tree with emsdk
support:

<pre><code>$ ./configure --with-emsdk=/path/to/emsdk \
  --and-other-options...
</code></pre>

If the <tt>--with-emsdk</tt> flag is not provided, the configure
script will check for the environment variable <tt>EMSDK</tt>, which
is one of the standard variables the SDK environment uses. If that
variable is found, its value will implicitly be used in place of the
missing <tt>--with-emsdk</tt> flag. Thus, if the <tt>emsdk_env.sh</tt>
script is sourced into the shell before running the configure script,
the SDK will be detected even without the config flag.

The configure script installs some makefile variables which tell the
build where to find the SDK and it generates a script named
<tt>tools/emcc.sh</tt> (from the template file
<tt>[/file/tools/emcc.sh.in|/tools/emcc.sh.in]</tt>), which is a
wrapper around the Emscripten C compiler (<tt>emcc</tt>). The wrapper
script uses the configure-time state to attempt to set up the various
environment variables which are required by <tt>emcc</tt> and will
fail if it cannot do so. Once it's set up the environment, it passes
on all of its arguments to <tt>emcc</tt>.

The WASM-related build parts are set up such that none of them should
ever trigger implicitly (e.g. via dependencies resolution) in a normal
build cycle. They are instead explicitly built as described below.

From the top of the source tree, all WASM-related components can be
built with:

<pre><code>$ make wasm</code></pre>

<div class="sidebar">The file
<tt>[/file/extsrc/pikcher-worker.js|extsrc/pikcher-worker.js]</tt>
is hand-coded and intended to be loaded as a "Worker" in
JavaScript. That file loads the main module and provides an
interface via which a main JavaScript thread can communicate with
pikchr running in a Worker thread. The file
<tt>[/file/src/fossil.page.pikchrshowasm.js|src/fossil.page.pikchrshowasm.js]</tt>
implements the [/pikchrshow] app and demonstrates how
<tt>pikchr-worker.js</tt> is used.</div>

As of this writing, those parts include:

   *  <tt>extsrc/pikchr.wasm</tt> is a WASM-compiled form of
      <tt>extsrc/pikchr.c</tt>.
   *  <tt>extsrc/pikchr.js</tt> is JS/WASM glue code generated by Emscripten
      to give JS code access to the API exported by the WASM file.

When a new version of <tt>extsrc/pikchr.c</tt> is installed, the
files <tt>pikchr.{js,wasm}</tt> will need to be recompiled to account
for that. Running <tt>make wasm</tt> will, if the build is set up for
the emsdk, recompile those:

<pre><code>$ make wasm
./tools/emcc.sh -o extsrc/pikchr.js ...
$ ls -la extsrc/pikchr.{js,wasm}
-rw-rw-r-- 1 stephan stephan 17263 Jun  8 03:59 extsrc/pikchr.js
-rw-rw-r-- 1 stephan stephan 97578 Jun  8 03:59 extsrc/pikchr.wasm
</code></pre>

<div class="sidebar">If that fails with a message along the lines of
“<code>setting `EXPORTED_RUNTIME_METHODS` expects `<class 'list'>` but
got `<class 'str'>`</code>†then the emcc being invoked is too old: emcc
changed the format of list-type arguments at some point.  The required
minimum version is unknown, but any SDK version from May 2022 or later
"should" (as of this writing) suffice. Any older version may or may not
work.</div>

After that succeeds, we need to run the normal build so that those
generated files can be compiled in to the fossil binary, accessible
via the [/help?cmd=/builtin|/builtin page]:

<pre><code>$ make</code></pre>

Before checking in those newly-built files, they need to be tested by
running the [/pikchrshow] page. If that page loads, the compilation
process fundamentally worked (a load failure will be made obvious to
the viewer). If it fails to load then the browser's dev tools console
likely provides at least a small hint (and <em>sometimes</em> a useful
hint) about the nature of the problem. Don't check those files in
until [/pikchrshow] runs, though!

Should pikchr's C interface ever change, <tt>pikchr-worker.js</tt>
will need to be updated to accommodate it, but such modification is
typically trivial.

<h3>8.1 Solutions other than Emscripten?</h3>

Emscripten is not the only option for building C as WASM, but it
provides a complete toolchain which eliminates many other steps which
must otherwise be accounted for on a per-project basis.  Despite its
convenience, it behooves us to explore other build options for the
sake of portability and avoiding what amounts to vendor lock-in.

For later refererence, here are articles specifically covering
building WASM projects without using Emscripten:

   *  [https://surma.dev/things/c-to-webassembly/]
   *  [https://schellcode.github.io/webassembly-without-emscripten]
Added www/cap-theorem.md.













































































































































































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# Fossil and the CAP Theorem

[The CAP theorem][cap] is a fundamental mathematical proof about
distributed systems.  A software system can no more get around it than a
physical system can get past *c*, the [speed of light][sol] constant.

Fossil is a distributed system, so it can be useful to think about it in
terms of the CAP theorem. We won’t discuss the theorem itself or how you
reason using its results here. For that, we recommend [this article][tut].

[cap]: https://en.wikipedia.org/wiki/CAP_theorem
[sol]: https://en.wikipedia.org/wiki/Speed_of_light
[tut]: https://www.ibm.com/cloud/learn/cap-theorem


<a id="ap"></a>
## Fossil Is an AP-Mode System

As with all common [DVCSes][dvcs], Fossil is an AP-mode system, meaning
that your local clone isn’t necessarily consistent with all other clones
(C), but the system is always available for use (A) and
partition-tolerant (P). This is what allows you to turn off Fossil’s
autosync mode, go off-network, and continue working with Fossil, even
though only a single node (your local repo clone) is accessible at the
time.

You may consider that going back online restores “Câ€, because upon sync,
you’re now consistent with the repo you cloned from. But, if another
user has gone offline in the meantime, and they’ve made commits to their
disconnected repo, *you* aren’t consistent with *them.* Besides which,
if another user commits to the central repo, that doesn’t push the
change down to you automatically: even if all users of a Fossil system
are online at the same instant, and they’re all using autosync, Fossil
doesn’t guarantee consistency across the network.

There’s no getting around the CAP theorem!

[dvcs]: https://en.wikipedia.org/wiki/Distributed_version_control


<a id="ca"></a>
## CA-Mode Fossil

What would it mean to redesign Fossil to be CA-mode?

It means we get a system that is always consistent (C) and available (A)
as long as there are no partitions (P).

That’s basically [CVS] and [Subversion][svn]: you can only continue
working with the repository itself as long as your connection to the central repo server functions.

It’s rather trivial to talk about single-point-of-failure systems like
CVS or Subversion as
CA-mode. Another common example used this way is a classical RDBMS, but
aren’t we here to talk about distributed systems? What’s a good example
of a *distributed* CA-mode system?

A better example is [Kafka], which in its default configuration assumes
it being run on a corporate LAN in a single data center, so network
partitions are exceedingly rare. It therefore sacrifices partition
tolerance to get the advantages of CA-mode operation. In its particular application of
this mode, a
message isn’t “committed†until all running brokers have a copy of it,
at which point the message becomes visible to the client(s). In that
way, all clients always see the same message store as long as all of the
Kafka servers are up and communicating.

How would that work in Fossil terms?

If there is only one central server and I clone it on my local laptop,
then CA mode means I can only commit if the remote Fossil is available,
so in that sense, it devolves to the old CVS model.

What if there are three clones? Perhaps there is a central server *A*,
the clone *B* on my laptop, and the clone *C* on your laptop. Doesn’t CA
mode now mean that my commit on *B* doesn’t exist after I commit it to
the central repo *A* until you, my coworker, *also* pull down the copy
of that commit to your laptop *C*, validating the commit through the
network?

That’s one way to design the system, but another way would be to scope
the system to only talk about proper *servers*, not about the clients.
In that model, a CA-mode Fossil alternative might require 2+ servers to
be running for proper replication. When I make a commit, if all of the
configured servers aren’t online, I can’t commit. This is basically CVS
with replication, but without any useful amount of failover.

[CVS]:   https://en.wikipedia.org/wiki/Concurrent_Versions_System
[Kafka]: https://engineering.linkedin.com/kafka/intra-cluster-replication-apache-kafka
[svn]:   https://en.wikipedia.org/wiki/Apache_Subversion


<a id="cp"></a>
## CP-Mode Fossil

What if we modify our CA-mode system above with “warm spares�  We can
say that commits must go to all of the spares as well as the active
servers, but a loss of one active server requires that one warm spare
come into active state, and all of the clients learn that the spare is
now considered “active.†At this point, you have a CP-mode system, not a
CA-mode system, because it’s now partition-tolerant (P) but it becomes
unavailable when there aren’t enough active servers or warm
spares to promote to active status.

CP is your classical [BFT] style distributed consensus system, where the
system is available only if the client can contact a *majority* of the
servers. This is a formalization of the warm spare concept above: with
*N* server nodes, you need at least ⌊*N* / 2⌋ + 1 of them to be online
for a commit to succeed.

Many distributed database systems run in CP mode because consistency (C) and
partition-tolerance (P) is a useful combination. What you lose is
always-available (A) operation: with a suitably bad partition, the
system goes down for users on the small side of that partition.

An optional CP mode for Fossil would be attractive in some ways since in
some sense Fossil is a distributed DBMS, but in practical terms, it
means Fossil would then not be a [DVCS] in the most useful sense, being
that you could work while your client is disconnected from the remote
Fossil it cloned from.

A fraught question is whether the non-server Fossil clones count as
“nodes†in this sense.

If they do count, then if there are only two systems, the central server
and the clone on my laptop, then it stands to reason from the formula
above that I can only commit if the central server is available. In that
scheme, a CP-mode Fossil is basically like CVS.

But what happens if my company hires a coworker to help me with the
project, and this person makes their own clone of the central repo? The
equation says I still need 2 nodes to be available for a commit, so if
my new coworker goes off-network, that doesn’t affect whether I can make
commits. Likewise, if I go off-network, my coworker can make commits to
the central server.

But what happens if the central server goes down? The equation says we
still have 2 nodes, so we should be able to commit, right? Sure, but
only if my laptop and communicate directly to my coworker’s laptop! If
it can’t, that’s also a network partition, so *N=1* on both sides in
that case. The implication is that for a true CP-mode Fossil, we’d need
some kind of peer-to-peer networking layer so that our laptops can
accept commits from the other, so that when the central server comes
online, one of us can send the results up to it to get it caught up.

But doesn’t that then mean there is no security? How does [Fossil’s RBAC
system][caps] work if peer-to-peer commits are allowed?

You can instead reconceptualize the system as “node†meaning only server
nodes, so that client-only systems don’t count. This allows you to have
an RBAC system again.

With just one central server, ⌊1/2⌋+1=1, so you get CVS-like behavior:
if the server’s up, you can commit.

If you set up 2 servers for redundancy, both must be up for commits to
be allowed, since otherwise you could end up with half the commits going
to the server on one side of a network partition, half going to the
other, and no way to arbitrate among the two once the partition is
lifted.

(Today’s AP-mode Fossil has this capability, but the necessary cost is
“Câ€, consistency! Once again, you can’t get around the CAP theorem.)

3 servers is more sensible: any client that can see at least 2 of them
can commit.

Will there ever be a CP-mode Fossil? This author doubts it, but as I’ve
shown, it would be useful in contexts where you’d rather have a
guarantee of consistency than availability.

[BFT]:    https://en.wikipedia.org/wiki/Byzantine_fault
[caps]:   ./caps/
Added www/caps/admin-v-setup.md.













































































































































































































































































































































































































































































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# Differences Between Setup and Admin Users

This document explains the distinction between [Setup users][caps] and
[Admin users][capa]. For other information about use types, see:

* [Administering User Capabilities](./)
* [How Moderation Works](../forum.wiki#moderation)
* [Users vs Subscribers](../alerts.md#uvs)
* [Defense Against Spiders](../antibot.wiki)


## <a id="philosophy"></a>Philosophical Core

The Setup user "owns" the Fossil repository and may delegate a subset of
that power to one or more Admin users.

The Setup user can grant Admin capability and take it away, but Admin
users cannot grant themselves Setup capability, either directly via the
Admin → Users UI page or via any indirect means. (If you discover
indirect means to elevate Admin privilege to Setup, it's a bug, so
please [report it][forum]!)

It is common for the Setup user to have administrative control over the
host system running the Fossil repository, whereas it makes no sense for
Admin users to have that ability. If an Admin-only user had `root`
access on a Linux box running the Fossil instance they are an Admin on,
they could elevate their capability to Setup in several ways. (The
`fossil user` command, the `fossil sql` command, editing the repository
DB file directly, etc.) Therefore, if you wish to grant someone
Setup-like capability on a Fossil repository but you're unwilling to
give them a login on the host system, you probably want to grant
them Admin capability instead.

Admin power is delegated from Setup. When a Setup user grants Admin
capability, it is an expression of trust in that user's judgement.

Admin-only users must not fight against the policies of the Setup user.
Such a rift would be just cause for the Setup user to strip the Admin
user's capabilities. This may then create a fork in the project’s
development effort as the ex-Admin takes their clone and stands it up
elsewhere, so they may become that fork’s Setup user.

A useful rule of thumb here is that Admin users should only change
things that the Setup user has not changed from the stock configuration.
In this way, an Admin-only user can avoid overriding the Setup user's
choices.

You can also look at the role of Admin from the other direction, up
through the [user power hierarchy][ucap] rather than down from Setup. An
Admin user is usually a “super-developer†role, given full control over
the repository’s managed content: versioned artifacts in [the hash tree][bc],
[unversioned content][uv], forum posts, wiki articles,
tickets, etc.

We’ll explore these distinctions in the rest of this document.

[bc]:   ../blockchain.md
[ucap]: ./index.md#ucap
[uv]:   ../unvers.wiki


## <a id="binary"></a>No Granularity

Fossil doesn’t make any distinction between these two user types beyond
this binary choice: Setup or Admin.

A few features of Fossil are broken down so that only part of the
feature is accessible to Admin, with the rest left only to Setup users,
but for the most part each feature affected by this distinction is
either Admin + Setup or Setup-only.

We could add more capability letters to break down individual
sub-features, but we’d run out of ASCII alphanumerics pretty quickly,
and we might even run out of ASCII punctuation and symbols. Then would
we need to shift to Unicode?

Consider the Admin → Settings page, which is currently restricted to
Setup users only: you might imagine breaking this up into several
subsets so that some settings can be changed by Admin users.  Is that a
good idea? Maybe, but it should be done only after due consideration. It
would definitely be wrong to assign a user capability bit to *each*
setting on that page.

Now consider the opposite sort of case, Admin → Skins.  Fossil grants
Admin users full access to this page so that the Admins can maintain and
extend the skin as the repository evolves, not so Admins can switch the
entire skin to another without consulting with the Setup user first. How
would Fossil decide, using user capabilities only, which skin changes
the Admin user is allowed to do, and which must be left to Setup? Do we
assign a separate capability letter to each step in `/setup_skin`? Do we
assign one more each to the five sections of a skin? (Header, Footer,
CSS, JavaScript, and Details.) It quickly becomes unmanageable.



## <a id="capgroups"></a>Capability Groups

We can break up the set of powers the Admin user capability grants into
several groups, then defend each group as a coherent whole.


### <a id="security"></a>Security

While establishing the Fossil repository's security policy is a task for
the Setup user, *maintaining* that policy is something that Fossil
allows a Setup user to delegate to trustworthy users via the Admin user
capability:

*   **Manage users**: The only thing an Admin-only user cannot do on the
    Admin → Users page is grant Setup capability, either to themselves
    or to other users. The intent is that Admin users be able to take
    some of the load of routine user management tasks off the shoulders
    of the Setup user: delete accounts created by spammers, fix email
    alert subscriptions, reset passwords, etc.

*   **Security audit**: The Admin → Security-Audit page runs several
    tests on the Fossil repository's configuration, then reports
    potential problems it found and offers canned solutions. Those
    canned solutions do not do anything that an Admin-user could not do
    via other means, so this page offers the Admin-only user no more
    power than they otherwise had. For example, this page's "Take it
    Private" feature can also be done manually via Admin → Users. This
    page is a convenience, not a grant of new power to the Admin-only
    user.

*   **Logging**:<a id="log"></a> Admin-only users get to see the various
    Fossil logs in case they need to use them to understand a problem
    they're empowered to solve. An obvious example is a spam attack: the
    Admin might want to find the user's last-used IP, see if they cloned
    the repository, see if they attempted to brute-force an existing
    login before self-registering, etc.

Some security-conscious people might be bothered by the fact that
Admin-only users have these abilities. Think of a large IT organization:
if the CIO hires a [tiger team][tt] to test the company's internal IT
defenses, the line grunts fix the reported problems, not the CIO.


### <a id="administrivia"></a>Administrivia

It is perfectly fine for a Fossil repository to only have Setup users,
no Admin users. The smaller the repository, the more likely the
repository has no Admin-only users. If the Setup user neither needs nor
wants to grant Admin power to others, there is no requirement in Fossil
to do so. [Setup capability is a pure superset of Admin capability.][sia]

As the number of users on a Fossil repository grows, the value in
delegating administrivia also grows, because the Setup user typically
has other time sinks they consider more important.

Admin users can take over the following routine tasks on behalf of the
Setup user:

*   **Shunning**: After user management, this is one of the greatest
    powers of an Admin-only user. Fossil grants access to the Admin →
    Shunned page to Admin users rather than reserve it to Setup users
    because one of the primary purposes of [the Fossil shunning
    system][shun] is to clean up after a spammer, and that's
    exactly the sort of administrivia we wish to delegate to Admin users.

    Coupled with the Rebuild button on the same page, an Admin user has
    the power to delete the repository's entire
    [hash tree][bc]! This makes this feature a pretty good
    razor in deciding whether to grant someone Admin capability: do you
    trust that user to shun Fossil artifacts responsibly?

    Realize that shunning is cooperative in Fossil. As long as there are
    surviving repository clones, an Admin-only user who deletes the
    whole hash tree has merely caused a nuisance. An Admin-only user
    cannot permanently destroy the repository unless the Setup user has
    been so silly as to have no up-to-date clones.

*   **Moderation**: According to [the user power hierarchy][ucap],
    Admins are greater than Moderators, so control over
    what Moderators can do clearly belongs to both Admins and to the
    Setup user(s).

*   **Status**: Although the Fossil `/stat` page is visible to every
    user with Read capability, there are several additional things this
    page gives access to when a user also has the Admin capability:

    *   <p>[Email alerts][ale] and [backoffice](../backoffice.md)
        status. Admin-only users cannot modify the email alerts setup,
        but they can see some details about its configuration and
        current status.</p>

    *   <p>The `/urllist` page, which is a read-only page showing the
        ways the repository can be accessed and how it has been accessed
        in the past. Logically, this is an extension to logging,
        [covered above](#log).</p>

    *   <p>The Fossil repository SQL schema. This is not particularly
        sensitive information, since you get more or less the same
        information when you clone the repository. It's restricted to
        Admin because it's primarily useful in debugging SQL errors,
        which happen most often when Fossil itself is in flux and the
        schema isn't being automatically updated correctly. That puts
        this squarely into the "administrivia" category.</p>

    *   <p>Web cache status, environment, and logging: more
        administrivia meant to help the Admin debug problems.</p>

*   **Configure search**

[ale]:  ../alerts.md
[shun]: ../shunning.wiki


### <a id="cosmetics"></a>Cosmetics

While the Setup user is responsible for setting up the initial "look" of
a Fossil repository, the Setup user entrusts Admin users with
*maintaining* that look. An Admin-only user therefore has the following
special abilities:

*   Modify the repository skin

*   Create and modify URL aliases

*   Manage the "ad units" feature, if enabled.

*   Adjust the `/timeline` display preferences.

*   Change the "logo" element displayed by some skins.

These capabilities allow an Admin-only user to affect the branding and
possibly even the back-end finances of a project. This is why we began
this document with a philosophical discussion: if you cannot entrust a
user with these powers, you should not grant that user Admin capability.


## <a id="clones"></a>Clones and Backups

Fossil is a *distributed* version control system, which has direct
effects on the “Setup user†concept in the face of clones. When you
clone a repository, your local user becomes a Setup user on the local
clone even if you are not one on the remote repository. This may be
surprising to you, but it should also be sensible once you realize that
your operating system will generally give you full control over the
local repository file.  What use trying to apply remote restrictions on
the local file, then?

The distinctions above therefore are intransitive: they apply only
within a single repository instance.

Fossil behaves differently when you do a clone as a user with Setup
capability on the remote repository, which primarily has effects on the
fidelity of clone-as-backup, which we cover [elsewhere](../backup.md).
We strongly encourage you to read that document if you expect to use a
clone as a complete replacement for the remote repository.


## <a id="apsu"></a>The All-Powerful Setup User

Setup users get [every user capability](./ref.html) of Fossil except for
[two exceptionally dangerous capabilities](#dcap), which they can later
grant to themselves or to others.

In addition, Setup users can use every feature of the Fossil UI. If Fossil can do a
thing, a Setup user on that repo can make Fossil do it.

Setup users can do many things that Admin users cannot. They may not
only use all of the Admin UI features, they may also:

*   See record IDs (RIDs) on screens that show them
*   See the MIME type of attachments on [`/ainfo` pages](/help?cmd=/ainfo)
*   See a remote repo’s HTTP [cache status](/help?cmd=/cachestat)
    and [pull cache entries](/help?cmd=/cacheget)
*   Edit a Setup user’s account!

The “Admin†feature of Fossil UI is so-named because Admin users can use
about half of its functions, but only Setup can use these pages:

*   **Access**: This page falls under the [Security](#security)
    category above, but like Configuration, it's generally something set
    up once and never touched, so only Setup users should change it.

*   **Configuration**: This page nominally falls
    under [Cosmetics](#cosmetics) above, but it's such a core part of the Fossil
    configuration — something every Setup user is expected to fully
    specify on initial repository setup — that we have trouble
    justifying any case where an Admin-only user would have good cause
    to modify any of it. This page is generally set up once and then
    never touched again.

*   **Email-Server**: This is an experimental SMTP server feature which
    is currently unused in Fossil. Should we get it working, it will
    likely remain Setup-only, since it will likely be used as a
    replacement for the platform’s default SMTP server, a powerful
    position for a piece of software to take.
  
*   **Login-Group**: [Login groups][lg] allow one Fossil repository to
    delegate user access to another. Since an Admin-only user on one
    repo might not have such access to another repo on the same host
    system, this must be a Setup-only task.

*   **Notification**: This is the main UI for setting up integration
    with a platform’s SMTP service, for use in sending out [email
    notifications][ale]. Because this screen can set commands to execute
    on the host, and because finishing the configuration requires a
    login on the Fossil host system, it is not appropriate to give Admin
    users access to it.

*   **Settings**: The [repository settings][rs] available via Admin →
    Settings have too wide a range of power to allow modification by
    Admin-only users:

    *   <p><b>Harmless</b>: Admin-only users on a repository may well
        have checkin rights on the repository, so the fact that
        versionable settings like `crlf-glob` can also be set at the
        repository level seems like a thing we might want to allow
        Admin-only users the ability to change. Since Fossil currently
        has no way to allow only some settings to be changed by
        Admin-only users and some not, we can't just show these harmless
        settings to Admin-only users.</p>

    *   <p><b>Low-Risk</b>: The <tt>admin-log</tt> setting controls
        whether the Fossil admin log is generated. Since we've <a
        href="#log">already decided</a> that Admin-only users can see
        this log, it seems fine that the Admin users can choose whether
        this log gets generated in the first place.</p>

        <p>There's a small risk that a rogue Admin user could disable
        the log before doing something evil that the log would capture,
        so ideally, we'd want to restrict changing this setting from 1
        to 0 to Setup only while allowing Admin-only users to change it
        from 0 to 1. Fossil doesn't currently allow that.</p>

    *   <p><b>Risky</b>: The <tt>https-login</tt> setting falls under
        the "Security" section above, but it should probably never be
        adjusted by Admin-only users. Sites that want it on will never
        want it to be disabled without a very good reason.</p>

        <p>There is also an inverse risk: if the site has a front-end
        HTTPS proxy that uses HTTP to communicate over localhost to
        Fossil, enabling this setting will create an infinite redirect
        loop! (Ask me how I know.)</p>

    *   <p><b>Dangerous</b>: The <tt>email-send-command</tt> setting
        could allow a rogue Admin to run arbitrary commands on the host
        system, unless it's prevented via some kind of host-specific
        restriction.  (chroot, jails, SELinux, VMs, etc.) Since it makes
        no sense to trust Admin-only users with <tt>root</tt> level
        access on the host system, we almost certainly don't want to
        allow them to change such settings.</p>

*   **SQL**: The Admin → SQL feature allows the Setup user to enter raw
    SQL queries against the Fossil repository via Fossil UI. This not
    only allows arbitrary ability to modify the repository hash tree
    and its backing data tables, it can probably also be used to damage
    the host such as via `PRAGMA temp_store = FILE`.

*   **Tickets**: This section allows input of arbitrary TH1 code that
    runs on the server, affecting the way the Fossil ticketing system
    works. The justification in the **TH1** section below therefore
    applies.

*   **TH1**: The [TH1 language][th1] is quite restricted relative to the
    Tcl language it descends from, so this author does not believe there
    is a way to damage the Fossil repository or its host via the Admin →
    TH1 feature, which allows execution of arbitrary TH1 code within the
    repository's execution context. Nevertheless, interpreters are a
    well-known source of security problems, so it seems best to restrict
    this feature to Setup-only users as long as we lack a good reason
    for Admin-only users to have access to it.

*   **Transfers**: This is for setting up TH1 hooks on various actions,
    so the justification in the **TH1** section above applies.

*   **Wiki**: These are mainly cosmetic and usability settings. We might
    open this up to Admin users in the future.

Just remember, [user caps affect Fossil’s web interfaces only][webo].  A
user is a Setup user by default on their local clone of a repo, and
Fossil’s ability to protect itself against malicious (or even simply
incorrect) pushes is limited. Someone with clone and push capability on
your repo could clone it, modify their local repo, and then push the
changes back to your repo. Be careful who you give that combination of
capabilities to!

When you run [`fossil ui`][fui], you are the Setup user on that repo
through that UI instance, regardless of the capability set defined in
the repo’s user table. This is true even if you cloned a remote repo
where you do not have Setup caps. This is why `ui` always binds to
`localhost` without needing the `--localhost` flag: in this mode, anyone
who can connect to that repo’s web UI has full power over that repo.


## <a id="dcap"></a>Dangerous Capabilities Initially Denied to Everyone

There are two capabilities that Fossil doesn’t grant by default to Setup
or Admin users automatically. They are exceptionally dangerous, so
Fossil makes these users grant themselves (or others) these capabilities
deliberately, hopefully after careful consideration.


### <a id="y"></a>Write Unversioned

Fossil currently doesn’t distinguish the sub-operations of
[`fossil uv`](/help?cmd=uv); they’re all covered by [**WrUnver**][capy]
(“yâ€) capability. Since some of these operations are unconditionally
destructive due to the nature of unversioned content, and since this
goes against Fossil’s philosophy of immutable history, nobody gets cap
“y†on a Fossil repo by default, not even the Setup or Admin users.  A
Setup or Admin user must grant cap “y†to someone — not necessarily
themselves! — before modifications to remote
unversioned content are possible.

Operations on unversioned content made without this capability affect
your local clone only. In this way, your local unversioned file table
can have different content from that in its parent repo. This state of
affairs will continue until your user either gets cap “y†and syncs that
content with its parent or you say `fossil uv revert` to make your local
unversioned content table match that of its parent repo.


### <a id="x"></a>Private Branch Push

For private branches to remain private, they must never be accidentally
pushed to a public repository. It can be [difficult to impossible][shun]
to recover from such a mistake, so nobody gets [**Private**][capx] (“xâ€)
capability on a Fossil repo by default, not even Admin or Setup users.

There are two common uses for private branches.

One use is part of a local social contract allowing individual
developers to work on some things in private until they’re ready to push
them up to the parent repository. This goes against [a core tenet][fdp]
of Fossil’s design philosophy, but Fossil allows it, so some development
organizations do this. If yours is one of these, you might give cap “xâ€
to the “developer†category.

The other use is in development organizations that follow the Fossil
philosophy, where you do not work in private unless you absolutely must.
You may have a public-facing project — let’s call it “SQLite†for the
sake of argument — but then someone comes along and commissions a custom
modification to your project which they wish to keep proprietary.  You
do your work on a private branch, which you absolutely must never push
to the public repo, because that would be illegal.  (Breach of contract,
copyright violation on a work-for-hire agreement, etc.) If you are using
Fossil in this way, we recommend that you give “x†capability to a
special developer account only, if at all, to minimize the chance of an
accidental push.


[capa]: ./ref.html#a
[caps]: ./ref.html#s
[capx]: ./ref.html#x
[capy]: ./ref.html#y

[fcp]:   https://fossil-scm.org/home/help?cmd=configuration
[fdp]:   ../fossil-v-git.wiki#devorg
[forum]: https://fossil-scm.org/forum/
[fui]:   /help?cmd=ui
[lg]:    ./login-groups.md
[rs]:    https://fossil-scm.org/home/doc/trunk/www/settings.wiki
[sia]:   https://fossil-scm.org/home/artifact?ln=1259-1260&name=0fda31b6683c206a
[snoy]:  https://fossil-scm.org/forum/forumpost/00e1c4ecff
[th1]:   ../th1.md
[tt]:    https://en.wikipedia.org/wiki/Tiger_team#Security
[webo]:  ./#webonly
Added www/caps/impl.md.















































































































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# Implementation Details of User Capabilities

## <a id="choices"></a>Capability Letter Choices

We [assigned][ref] user capability characters using only lowercase ASCII
letters at first, so those are the most important within Fossil: they
control the functions most core to Fossil’s operation. Once we used up
most of the lowercase letters, we started using uppercase, and then
during the development of the [forum feature][for] we assigned most of
the decimal numerals. All of the lowercase ASCII letters are now
assigned. Eventually, we might have to start using ASCII
punctuation and symbols. We expect to run out of reasons to define new caps before
we’re forced to switch to Unicode, though the possibilities for [mnemonic][mn]
assignments with emoji are intriguing. <span style="vertical-align:
bottom">😉</span>

The existing caps are usually mnemonic, especially among the
earliest and therefore most central assignments, made when we still had
lots of letters to choose from.  There is still hope for good future
mnemonic assignments among the uppercase letters, which are mostly still
unused.


## <a id="bitfield"></a>Why Not Bitfields?

Some may question the use of ASCII character strings for [capability
sets][ucap] instead of bitfields, which are more efficient, both in
terms of storage and processing time.

Fossil handles these character strings in one of two ways. For most HTTP
hits, Fossil [expands][sexp] the string into a [`struct` full of
flags][sff] so that later code can just do simple Boolean tests. In a
minority of cases, where Fossil only needs to check for the presence of
a single flag, it just does a [`strchr()` call][sc] on the string
instead.

Both methods are slower than bit testing in a bitfield, but keep the
execution context in mind: at the front end of an HTTP request handler,
where the nanosecond differences in such implementation details are
completely swamped by the millisecond scale ping time of that repo’s
network connection, followed by the required I/O to satisfy the request.
Either method is plenty fast in that context.

In exchange for this immeasurable cost per hit, we get human-readable
capability sets.


## <a id="filter"></a>Why Doesn’t Fossil Filter “Bad†Artifacts on Sync?

Fossil is more trusting about the content it receives from a remote
clone during sync than you might expect. Common manifestations of this
design choice are:

1.  A user may be able to impersonate other users. This can be
    [accidental](./index.md#defuser) as well as purposeful.

2.  If your local system clock is out-of-sync with absolute time,
    artifacts committed to that repo will appear with the “wrong†time
    when sync’d. If the time sync error is big enough, it can make
    check-ins appear to go back in time and other bad effects.

3.  You can purposely overwrite good timestamps with bad ones and push
    those changes up to the remote with no interference, even though
    Fossil tries to make that a Setup-only operation.

All of this falls out of two of Fossil’s design choices: sync is
all-or-nothing, and [the Fossil hash tree][bc] is immutable. Fossil
would have to violate one or both of these principles to filter such
problems out of incoming syncs.

We have considered auto-[shunning][shun] “bad†content on sync, but this
is [difficult][asd] due to [the design of the sync protocol][dsp]. This
is not an impossible set of circumstances, but implementing a robust
filter on this input path would be roughly as difficult as writing a
basic [inter-frame video codec][ifvc]: do-able, but still a lot of
work. Patches to do this will be thoughtfully considered.

We can’t simply change content as it arrives. Such manipulations would
change the artifact manifests, which would change the hashes, which
would require rewriting all parts of the block chain from that point out
to the tips of those branches. The local Fossil repo must then go
through the same process as the remote one on subsequent syncs in order
to build up a sync sequence that the remote can understand.  Even if
you’re willing to accept all of that, this would break all references to
the old artifact IDs in forum posts, wiki articles, check-in comments,
tickets, etc.

The bottom line here is that [**Clone**](./ref.html#g) and
[**Write**](./ref.html#i) are a potent combination of user capabilities.
Be careful who you give that pair to!


-----

*[Back to Administering User Capabilities](./)*

<!-- add padding so anchor links always scroll ref’d section to top -->
<div style="height: 75em"></div>

[asd]:  https://fossil-scm.org/forum/forumpost/ce4a3b5f3e
[bc]:   ../blockchain.md
[dsp]:  https://fossil-scm.org/fossil/doc/trunk/www/sync.wiki
[for]:  ./forum.wiki
[ifvc]: https://en.wikipedia.org/wiki/Inter_frame
[mn]:   https://en.wikipedia.org/wiki/Mnemonic
[ref]:  ./ref.html
[sexp]: /artifact?ln=1223-1298&name=889d6724
[sff]:  /artifact?ln=80-117&name=52d2860f
[sc]:   https://en.cppreference.com/w/c/string/byte/strchr
[shun]: ../shunning.wiki
[ucap]: ./index.md#ucap
Added www/caps/index.md.





















































































































































































































































































































































































































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# Administering User Capabilities (a.k.a. Permissions)

Fossil includes a powerful [role-based access control system][rbac]
which affects which users have which capabilities(^Some parts of the
Fossil code call these “permissions†instead, but since there is [a
clear and present risk of confusion](#webonly) with operating system
level file permissions in this context, we avoid using that term for
Fossil’s RBAC capability flags in these pages.) within a given
[served][svr] Fossil repository. We call this the “caps†system for
short.

Fossil stores a user’s caps as an unordered string of ASCII characters,
one capability per, [currently](./impl.md#choices) limited to
[alphanumerics][an]. Caps are case-sensitive: “**A**†and “**a**†are
different user capabilities.

This is a complex topic, so some sub-topics have their own documents:

1.  [Login Groups][lg]
2.  [Implementation Details](./impl.md)
3.  [User Capability Reference](./ref.html)

[an]:   https://en.wikipedia.org/wiki/Alphanumeric
[avs]:  ./admin-v-setup.md
[lg]:   ./login-groups.md
[rbac]: https://en.wikipedia.org/wiki/Role-based_access_control


## <a id="ucat"></a>User Categories

Before we explain individual user capabilities and their proper
administration, we want to talk about an oft-overlooked and
misunderstood feature of Fossil: user categories.

Fossil defines four user categories. Two of these apply based on the
user’s login status: **nobody** and **anonymous**. The other two act
like Unix or LDAP user groups: **reader** and **developer**. Because we
use the word “group†for [another purpose][lg] in Fossil, we will
avoid using it that way again in this document. The correct term in
Fossil is “category.â€

Fossil user categories give you a way to define capability sets for four
hard-coded situations within the Fossil C source code. Logically
speaking:

> *(developer* &or; *reader)* &ge; *anonymous* &ge; *nobody*

When a user visits a [served Fossil repository][svr] via its web UI,
they initially get the capabilities of the “nobody†user category. This
category would be better named “everybody†because it applies whether
you’re logged in or not.

When a user logs in as “anonymous†via [`/login`](/help?name=/login) they
get all of the “nobody†category’s caps plus those assigned to the
“anonymous†user category. It would be better named “user†because it
affects all logged-in users, not just those logged in via Fossil’s
anonymous user feature.

When a user with either the “reader†([**u**][u]) or “developerâ€
([**v**][v]) capability letter logs in, they get their [individual user
caps](#ucap) plus those assigned to this special user category. They
also get those assigned to the “anonymous†and “nobody†categories.

Because “developer†users do not automatically inherit “reader†caps,
it is standard practice to give both letters to your “developer†users:
**uv**. You could instead just assign cap **u** to the “developerâ€
category.

Fossil shows how these capabilities apply hierarchically in the user
editing screen (Admin → Users → name) with the `[N]` `[A]` `[D]` `[R]`
tags next to each capability check box. If a user gets a capability from
one of the user categories already assigned to it, there is no value in
redundantly assigning that same cap to the user explicitly. For example,
with the default **ei** cap set for the “developer†category, the cap
set **ve** is redundant because **v** grants **ei**, which includes
**e**.

We suggest that you lean heavily on these fixed user categories when
setting up new users. Ideally, your users will group neatly into one of
the predefined categories, but if not, you might be able to shoehorn
them into our fixed scheme. For example, the administrator of a
wiki-only Fossil repo for non-developers could treat the “developerâ€
user category as if it were called “author,†and a forum-only repo could
treat the same category as if it were called “member.â€

There is currently no way to define custom user categories.

[svr]: ../server/


## <a id="ucap"></a>Individual User Capabilities

When one or more users need to be different from the basic capabilities
defined in user categories, you can assign caps to individual users. You
may want to have the [cap reference][ref] open when doing such work.

It is useful at this time to expand on the logical
expression [above](#cat), which covered only the four fixed user categories.
When we bring the individual user capabilities into it, the complete
expression of the way Fossil implements user power becomes:

> *setup* &ge; *admin* &ge; *moderator* &ge; *(developer* &or; *reader)* &ge; *[subscriber]* &ge; *anonymous* &ge; *nobody*

The two additions at the top are clear: [setup is all-powerful][apsu],
and since  admin users have [all capabilities][ref] except for Setup
capability, they are [subordinate only to the setup user(s)][avsp].

The moderator insertion could go anywhere from where it’s shown now down
to above the “anonymous†level, depending on what other caps you give to
your moderators. Also, there is not just one type of moderator: Fossil
has [wiki][l], [ticket][q], and [forum][5] moderators, each
independent of the others. Usually your moderators are fairly
high-status users, with developer capabilities or higher, but Fossil
does allow the creation of low-status moderators.

The placement of “subscriber†in that hierarchy is for the
sort of subscriber who has registered an account on the repository
purely to [receive email alerts and announcements][7]. Users with
additional caps can also be subscribers, but not all users *are* in fact
subscribers, which is why we show it in square brackets.  (See [Users vs
Subscribers](../alerts.md#uvs).)

[apsu]: ./admin-v-setup.md#apsu
[avsp]: ./admin-v-setup.md#philosophy


## <a id="new"></a>New Repository Defaults

Fossil creates one user account in new repos, which is named after your
OS user name [by default](#defuser).

Fossil gives the initial repository user the [all-powerful Setup
capability][apsu].

Users who visit a [served repository][svr] without logging in get the
“nobody†user category’s caps which default to
**[g][g][j][j][o][o][r][r][z][z]**: clone the repo, read the wiki,
check-out files via the web UI, view tickets, and pull version archives.
This default is suited to random passers-by on a typical FOSS project’s
public web site and its code repository.

Users who [prove they are not a bot][bot] by logging in — even if only
as “anonymous†— get the “nobody†capability set plus
**[h][h][m][m][n][n][c][c]**: see internal hyperlinks, append to
existing wiki articles, file new tickets, and comment on existing
tickets. We chose these additional capabilities as those we don’t want
bots to have, but which a typical small FOSS project would be happy to
give anonymous humans visiting the project site.

The “reader†user category is typically assigned to users who want to be
identified within the repository but who primarily have a passive role
in the project. The default capability set on a Fossil repo adds
**[k][k][p][p][t][t][w][w]** caps to those granted by “nobody†and
“anonymousâ€. This category is not well-named, because the default caps
are all about modifying repository content: edit existing wiki pages,
change one’s own password, create new ticket report formats, and modify
existing tickets. This category would be better named “participantâ€.

Those in the “developer†category get the “nobody†and “anonymous†cap
sets plus **[e][e][i][i]**: view
sensitive user material and check in changes.

[bot]: ../antibot.wiki


## <a id="pvt"></a>Consequences of Taking a Repository Private

When you click Admin → Security-Audit → “Take it private,†one of the
things it does is set the user capabilities for the “nobody†and
“anonymous†user categories to blank, so that users who haven’t logged
in can’t even see your project’s home page, and the option to log in as
“anonymous†isn’t even offered. Until you log in with a user name, all
you see is the repository’s skin and those few UI elements that work
without any user capability checks at all, such as the “Login†link.

Beware: Fossil does not reassign the capabilities these users had to
other users or to the “reader†or “developer†user category! All users
except those with Setup capability will lose all capabilities they
inherited from “nobody†and “anonymous†categories. Setup is the [lone
exception][apsu].

If you will have non-Setup users in your private repo, you should parcel
out some subset of the capability set the “nobody†and “anonymousâ€
categories had to other categories or to individual users first.


## <a id="read-v-clone"></a>Reading vs. Cloning

Fossil has two capabilities that are often confused:
[**Read**](./ref.html#o) and [**Clone**](./ref.html#g).

The **Read** capability has nothing to do with reading data from a local
repository, because [caps affect Fossil’s web interfaces
only](#webonly). Once you’ve cloned a remote repository to your local
machine, you can do any reading you want on that repository irrespective
of whether your local user within that repo has <b>Read</b> capability.
The repo clone is completely under your user’s power at that point,
affected only by OS file permissions and such. If you need to prevent
that, you want to deny **Clone** capability instead.

Withholding the **Read** capability has a different effect: it
prevents a web client from viewing [embedded documentation][edoc],
using [the file browser](/help?name=/dir),
exploring the [history](/help?name=/timeline) of check-ins,
and pulling file content via the [`/artifact`](/help?name=/artifact),
[`/file`](/help?name=/file), and [`/raw`](/help?name=/raw) URLs.
It is common to withhold **Read** capability from low-status visitors
on private or semi-private repos to prevent them from pulling individual
elements of the repo over the web one at a time, as someone may do when
denied the bulk **Clone** capability.

[edoc]: ../embeddeddoc.wiki


## <a id="defuser"></a>Default User Name

By default, Fossil assumes your OS user account name is the same as the
one you use in any Fossil repository. It is the [default for a new
repository](#new), though you can override this with [the `--admin-user`
option][auo]. Fossil has other ways of overriding this in other contexts
such as the `name@` syntax in clone URLs.

It’s simplest to stick with the default; a mismatch can cause problems.
For example, if you clone someone else’s repo anonymously, turn off
autosync, and make check-ins to that repository, they will be assigned
to your OS user name by default. If you later get a login on the remote
repository under a different name and sync your repo with it, your
earlier “private†check-ins will get synced to the remote under your OS
user name!

When such problems occur, you can amend the check-in to hide the
incorrect name from Fossil reports, but the original values remain in
the repository [forever][shun]. It is [difficult enough][fos] to fix
such problems automatically during sync that we are unlikely to ever do
so.

[auo]:  /help?name=new
[fos]:  ./impl.md#filter
[shun]: ../shunning.wiki



## <a id="utclone"></a>Cloning the User Table

When cloning over HTTP, the initial user table in the local clone is set
to its “[new state:](#new)†only one user with Setup capability, named
after either  your OS user account, per the default above, or after the
user given in the clone URL.

There is one exception: if you clone as a named Setup user, you get a
complete copy of the user information. This restriction keeps the user
table private except for the only user allowed to make absolutely
complete clones of a remote repo, such as for failover or backup
purposes. Every other user’s clone is missing this and a few other
items, either for information security or PII privacy reasons.

When cloning with file system paths, `file://` URLs, or over SSH, you
get a complete clone, including the parent repo’s complete user table.

All of the above applies to [login groups][lg] as well.


## <a id="webonly"></a>Caps Affect Web Interfaces Only

Fossil’s user capability system only affects accesses over `http[s]://`
URLs. This includes clone, sync/push/pull, the [UI pages][wp], and [the
JSON API][japi].  For everything else, the user caps aren’t consulted at
all.

The only checks made when working directly with a local repository are
the operating system’s file system permissions.  This should strike you
as sensible, since if you have read access to the repository file, you
can do anything you want to that repo DB including giving your user’s
record the [**Setup**][s] capability, after which Fossil’s user
capability system is effectively bypassed. (Or, create another Setup
user, with the same end effect.) If you’re objecting that you need
*write* access to the DB file to achieve this, realize that you can copy
a read-only file to another location, giving yourself write access to
it.

This is why the `fossil ui` command
gives you Setup permissions within Fossil UI: it can’t usefully prevent
you from doing anything through the UI since only the local file system
permissions actually matter, and you can’t start `fossil ui` without
having at least read access to that file.

What may be more surprising to you is that this is also true when
working on a *clone* done over a local file path, except that there are
then two sets of file system permission checks: once to modify the
working check-out’s repo clone DB file, then again on [sync][sync] with
the parent DB file. The Fossil capability checks are effectively
defeated because your user has [**Setup**][s] capability on both sides
of the sync. Be aware that those file checks do still matter, however:
Fossil requires write access to a repo DB while cloning from it, so you
can’t clone from a read-only repo DB file over a local file path.

Even more surprising to you may be the fact that user caps do not affect
cloning and syncing over SSH! (Not unless you go [out of your way][sshfc]
to patch around it, at any rate.) When you make a change to such a
repository, the stock Fossil behavior is that the change first goes to the
local repo clone where file system
permissions are all that matter, but then upon sync, the situation is
effectively the same as when the parent repo is on the local file
system. The reason behind this is that if you can log into the remote
system over SSH and that user has the necessary file system permissions
on that remote repo DB file to allow clone and sync operations, then
we’re back in the same situation as with local files: there’s no point
trying to enforce the Fossil user capabilities when you can just modify
the remote DB directly, so the operation proceeds unimpeded by any user
capability settings on the remote repo.

Where this gets confusing is that *all* Fossil syncs are done over the
HTTP protocol, including those done over `file://` and `ssh://` URLs,
not just those done over `http[s]://` URLs:

*   For `ssh://` URLs, Fossil pipes the HTTP conversation through a
    local SSH client to a remote instance of Fossil running the
    [`test-http`](/help?name=test-http) command to receive the tunneled
    HTTP connection. [This interface is intentionally permissionless][sxycap].

*   For `file://` URLs — as opposed to plain local file paths —
    the “sending†Fossil instance writes its side of
    the HTTP conversation out to a temporary file in the same directory
    as the local repo clone and then calls itself on the “receivingâ€
    repository to read that same HTTP transcript file back in to apply
    those changes to that repository. Presumably Fossil does this
    instead of using a pipe to ease portability to Windows.

Despite use of HTTP for these URL types, the fact remains that 
checks for capabilities like [**Read**][o] and [**Write**][i] within the
HTTP conversation between two Fossil instances only have a useful effect
when done over an `http[s]://` URL.

[sshfc]:  ../server/any/http-over-ssh.md
[sxycap]: /file?ci=ec5efceb8aac6cb4&name=src/main.c&ln=2748-2752


## <a id="pubpg"></a>Public Pages

In Admin → Access, there is an option for giving a list of [globs][glob]
to name URLs which get treated as if the visitor had [the default cap
set](#defcap). For example, you could take the [**Read**][o] capability
away from the “nobody†user category, who has it by default, to prevent
users without logins from pulling down your repository contents one
artifact at a time, yet give those users the ability to read the project
documentation by setting the glob to match your [embedded
documentation][edoc]’s URL root.


## <a id="defcap"></a>Default User Capability Set

In Admin → Access, you can define a default user capability set, which
is used as:

1.  the default caps for users newly created by an Admin or Setup user
2.  the default caps for self-registered users, an option in that same UI
3.  the effective caps for URIs considered [public pages](#pubpg)

This defaults to [**Reader**][u].


<!-- add padding so anchor links always scroll ref’d section to top -->
<div style="height: 75em"></div>

[ref]: ./ref.html

[a]:   ./ref.html#a
[b]:   ./ref.html#b
[c]:   ./ref.html#c
[d]:   ./ref.html#d
[e]:   ./ref.html#e
[f]:   ./ref.html#f
[g]:   ./ref.html#g
[h]:   ./ref.html#h
[i]:   ./ref.html#i
[j]:   ./ref.html#j
[k]:   ./ref.html#k
[l]:   ./ref.html#l
[m]:   ./ref.html#m
[n]:   ./ref.html#n
[o]:   ./ref.html#o
[p]:   ./ref.html#p
[q]:   ./ref.html#q
[r]:   ./ref.html#r
[s]:   ./ref.html#s
[t]:   ./ref.html#t
[u]:   ./ref.html#u
[v]:   ./ref.html#v
[w]:   ./ref.html#w
[x]:   ./ref.html#x
[y]:   ./ref.html#y
[z]:   ./ref.html#z

[2]:   ./ref.html#2
[3]:   ./ref.html#3
[4]:   ./ref.html#4
[5]:   ./ref.html#5
[6]:   ./ref.html#6
[7]:   ./ref.html#7

[glob]: https://en.wikipedia.org/wiki/Glob_(programming)
[japi]: https://docs.google.com/document/d/1fXViveNhDbiXgCuE7QDXQOKeFzf2qNUkBEgiUvoqFN4/view#heading=h.6k0k5plm18p1
[sp]:  ../sync.wiki
[sync]: /help?name=sync
[wp]:  /help#webpages
Added www/caps/login-groups.md.
































































































































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# Login Groups

The Admin → Login-Groups UI feature and its corresponding [`login-group`
command][lg] solve a common problem with Fossil: you’ve created multiple
repositories that some subset of users need access to, and you
don’t want to redundantly administer the user credentials for each
repository.


## Restrictions

This feature ties changes to the “`user`†table in one repo to that in
one or more other repos, keyed by the user’s name. The interactions are
non-obvious because although the goal is for the end result to “just
work,†there are practical security and administration matters that
complicate things:

1.  Login group handling only works between joined repositories for the
    subset of users with the same name.

1.  If you’re logged in on one repo in a group, any other repo in that
    group that has a matching user record will accept your valid login.

1.  When you set up a login group between two repos, the user tables
    aren’t merged, so even though you may have users that appear in
    both, they will retain their initial passwords, credentials, and so
    forth.

1.  The same is true after the login group is created: changes you make
    to the user table in one repo in the group only propagate to the
    other repos in the group when you check the “Apply changes to all
    repositories“ box in the “Scope†section of the user edit screen.
    Otherwise, user changes remain local to the repo you made them on.

1.  Login groups only affect [the HTTP interfaces][wo]. Contrast things
    like `ssh://` clones, where unless you [go out of your way][sh] to
    force them to run over one of the HTTP interfaces that pays
    attention to Fossil’s RBAC system, login groups aren’t consulted.


## Interactions

These restrictions combine in subtle and interesting ways. Examples:

*   **#1 and #2**: If you are logged into repo C as “charlie†and then
    try to visit joined repo A where “charlie†doesn’t exist, your valid
    login on C won’t get you into A.

*   **#2 and #3**: If “alice†exists in both of these same repos,
    logging in on A gets her into C, but if she has different user
    capabilities on each from the time before the two repos joined the
    login group, her caps on A don’t apply to C, nor vice versa.

    Let us say F is a forum-only repo, and W is a wiki-only repo, and
    that Alice has forum-posting rights on F and wiki-editing rights on
    W. If both repos are joined by a login group, Alice can log in on F
    and then access W without logging in on it separately, but she
    cannot then post a forum message on W even though she could on F.

*   **#3 and #4**: If you change the caps for user “alice†on one repo
    in a group and tell Fossil to apply the changes to all repos in the
    group, the new caps will *overwrite* those on the other repos, not
    merge with them.

    To extend the practical example from the prior point, let us say you
    wish to grant Alice the “write unversioned†capability on both F and
    W. If you check that single user cap box on F plus the “apply to
    all†option, then “Apply Changes,†she will end up with forum +
    unversioned caps on repo W, losing her wiki-editing caps in the
    process.

    If you want user caps to differ on each repo, you must administer
    them separately even if there is a common subset of caps between all
    repos in the group for that user. Remember: selecting the “apply to
    all†box calls for an overwrite operation, not a merge.

*   **#4 and #1**: If you make a change to an existing user “bob†in
    repo B and select the “apply to all†option, it will only affect
    other repos in the group that have a user “bob†configured.

    But, if you are instead creating user “bob†for the first time and
    select that option, that user *will* be created in all repos.  The
    same is true of user deletion: that destructive action will
    propagate through the group if you request it.

*   **#5 and #1**: If you have a user “daisy†on both repos A and B in a
    login group, logging in over the web to A doesn’t let you push
    changes into B over SSH. Without the workaround linked above, SSH
    only pays attention to the operating system’s user authentication
    system, not Fossil’s.

    Inversely, if Daisy successfully logs in over SSH to repo B, she
    gains no access to any of the other repos in that group. She needs
    at least one valid login over HTTP to one of the group’s repos.


## Discussion

The end result of all of this is that you can have a subset of users
with credentials only on repo A, a different subset only on B, and a
third subset common to both. The only thing selecting which case applies
is restriction #1 above.

Login groups have names. A repo can be in only one of these named login
groups at a time.

Trust in login groups is transitive within a single server. Consider
this sequence:

    $ cd /path/to/A/checkout
    $ fossil login-group join --name G ~/museum/B.fossil
    $ cd /path/to/C/checkout
    $ fossil login-group join ~/museum/B.fossil

That creates login group G joining repo A to B, then joins C to B.
Although we didn’t explicitly tie C to A, a successful login on C gets
you into both A and B, within the restrictions set out above.

Changes are transitive in the same way, provided you check that “apply
to all†box on the user edit screen.

[lg]: /help?cmd=login-group
[sh]: ../server/any/http-over-ssh.md
[wo]: ./index.md#webonly

-----

*[Back to Administering User Capabilities](./)*
Added www/caps/ref.html.





























































































































































































































































































































































































































































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<div class='fossil-doc' data-title="User Capability Reference">

<style type="text/css">
  p#backlink {
    /* Make empty space below the table so hyperlinks to named anchors
       near the bottom of the table still scroll that row to the top of
       the user's browser, even on tall screens. */
    margin-bottom: 75em;
  }

  tr > th {
    background-color: #e8e8e8;
    vertical-align: top;
  }
  body.fossil-dark-style tr > th {
    color: #000;
    opacity: 0.85;
  }

  tr.cols th {
    white-space: nowrap;
  }

  td, th {
    padding: 0.4em;
  }
</style>

<p>Here we document each currently-defined user capability character in
more detail than the brief summary on the <a
href="/setup_ucap_list">“key†page</a> in the Fossil user editor. Each
row gives the capability letter used in the Fossil user editor followed
by the C code’s name for that cap within the <tt>FossilUserPerms</tt>
object, so you can use this reference both from the UI down and from the
C code up.</p>

<p>The <a href="https://en.wikipedia.org/wiki/Mnemonic">mnemonics</a>
given here vary from obviously-correct to <i>post facto</i>
rationalizations to the outright fanciful. To <a
href="./impl.md#choices">some extent</a>, this is unavoidable.</p>


<h2>Reference</h2>

<table>
  <tr class="cols">
    <th>?</th>
    <th>Name</th>
    <th style="text-align: left">Description</th>
  </tr>

  <tr id="a">
    <th>a</th>
    <th>Admin</th>
    <td>
      Admin users have <em>all</em> of the capabilities below except for
      <a href="#s">setup</a>, <a herf="#x">Private</a>, and <a href="#y">WrUnver</a>.
      See <a href="admin-v-setup.md">Admin vs.  Setup</a> for a more
      nuanced discussion.  Mnemonic: <b>a</b>dministrate.
    </td>
  </tr> 

  <tr id="b">
    <th>b</th>
    <th>Attach</th>
    <td>
      Add attachments to wiki articles or tickets.  Mnemonics: <b>b</b>ind,
      <b>b</b>utton, <b>b</b>ond, or <b>b</b>olt.
    </td>
  </tr> 

  <tr id="c">
    <th>c</th>
    <th>ApndTkt</th>
    <td>
      Append comments to existing tickets. Mnemonic: <b>c</b>omment.
    </td>
  </tr> 

  <tr id="d">
    <th>d</th>
    <th>n/a</th>
    <td>
      Legacy capability letter from Fossil's forebear <a
      href="http://cvstrac.org/">CVSTrac</a>, which has no useful
      meaning in Fossil due to the nature of its durable Merkle tree design.
      We recommend that you remove it in case we
      ever reuse this letter for another purpose. See <a
      href="https://fossil-scm.org/forum/forumpost/43c78f4bef">this
      post</a> for details.
    </td>
  </tr>

  <tr id="e">
    <th>e</th>
    <th>RdAddr</th>
    <td>
      View <a
      href="https://en.wikipedia.org/wiki/Personal_data">personal
      identifying information</a> (PII) about other users such as email
      addresses. Mnemonics: show <b>e</b>mail addresses; or
      <b>E</b>urope, home of <a
      href="https://en.wikipedia.org/wiki/General_Data_Protection_Regulation">GDPR</a>.
    </td>
  </tr> 

  <tr id="f">
    <th>f</th>
    <th>NewWiki</th>
    <td>
      Create new wiki articles. Mnemonic: <b>f</b>ast, English
      translation of the Hawaiian word <a
      href="https://en.wikipedia.org/wiki/History_of_wikis#WikiWikiWeb,_the_first_wiki"><i>wiki</i></a>.
    </td>
  </tr> 

  <tr id="g">
    <th>g</th>
    <th>Clone</th>
    <td>
      Clone the repository. Note that this is distinct from <a
      href="#o">check-out capability, <b>o</b></a>; and that upon cloning
      not just files, but also tickets, wikis, technotes and forum posts
      are tranferred. Mnemonic: <b>g</b>et.
    </td>
  </tr> 

  <tr id="h">
    <th>h</th>
    <th>Hyperlink</th>
    <td>
      Get hyperlinks in generated HTML which link you to other parts of
      the repository. This capability exists so we can deny it to the
      “nobody†category, to <a href="../antibot.wiki">prevent bots from
      wandering around aimlessly</a> in the site’s hyperlink web, <a
      href="../loadmgmt.md">chewing up server resources</a> to little
      good purpose. Mnemonic: <b>h</b>yperlink.
    </td>
  </tr> 

  <tr id="i">
    <th>i</th>
    <th>Write</th>
    <td>
      Check changes into the repository. Note that a lack of this
      capability does not prevent you from checking changes into your
      local clone, only from syncing those changes up to the parent
      repo, and then <a href="./basics.md#webonly">only over HTTP</a>.
      Also note that not just files, but also tickets, wikis, technotes
      and forum posts will be accepted from clones upon syncronization.
      Granting this capability also grants <b>o (Read)</b>  Mnemonics:
      <b>i</b>nput, check <b>i</b>n changes.
    </td>
  </tr> 

  <tr id="j">
    <th>j</th>
    <th>RdWiki</th>
    <td>
      View wiki articles. Mnemonic: in<b>j</b>est page content.  (All
      right, you critics, you do better, then.)
    </td>
  </tr> 

  <tr id="k">
    <th>k</th>
    <th>WrWiki</th>
    <td>
      Edit wiki articles. Granting this capability also grants <a
      href="#j"><b>RdWiki</b></a> and <a href="#m"><b>ApndWiki</b></a>,
      but it does <em>not</em> grant <a href="#f"><b>NewWiki</b></a>!
      Mnemonic: <b>k</b>ontribute.
    </td>
  </tr> 

  <tr id="l">
    <th>l</th>
    <th>ModWiki</th>
    <td>
      Moderate <a href="#m">wiki article appends</a>. Appends do not get
      saved permanently to the receiving repo’s block chain until <a
      href="#s">Setup</a> or someone with this cap approves it.
      Mnemonic: a<b>l</b>low.
    </td>
  </tr> 

  <tr id="m">
    <th>m</th>
    <th>ApndWiki</th>
    <td>
      Append content to existing wiki articles.  Mnemonic: a<b>m</b>end
      wiki
    </td>
  </tr> 

  <tr id="n">
    <th>n</th>
    <th>NewTkt</th>
    <td>
      File new tickets. Mnemonic: <b>n</b>ew ticket.
    </td>
  </tr> 

  <tr id="o">
    <th>o</th>
    <th>Read</th>
    <td>
      Read content and history of files from a remote Fossil instance over
      HTTP. See <a href="index.md#read-v-clone">Reading vs.
      Cloning</a>. Mnemonic: check <b>o</b>ut remote repo contents.
    </td>
  </tr> 

  <tr id="p">
    <th>p</th>
    <th>Password</th>
    <td>
      Change one’s own password. Mnemonic: <b>p</b>assword.
    </td>
  </tr> 

  <tr id="q">
    <th>q</th>
    <th>ModTkt</th>
    <td>
      Moderate tickets: delete comments appended to tickets. Mnemonic:
      <b>q</b>uash noise commentary.
    </td>
  </tr> 

  <tr id="r">
    <th>r</th>
    <th>RdTkt</th>
    <td>
      View existing tickets. Mnemonic: <b>r</b>ead tickets.
    </td>
  </tr> 

  <tr id="s">
    <th>s</th>
    <th>Setup</th>
    <td>
      The <a href="./admin-v-setup.md#apsu">all-powerful Setup user</a>.
      Mnemonics: <b>s</b>etup or <b>s</b>uperuser.
    </td>
  </tr>

  <tr id="t">
    <th>t</th>
    <th>TktFmt</th>
    <td>
      Create new ticket report formats. Note that although this allows
      the user to provide SQL code to be run in the server’s context,
      and this capability is given to the untrusted “anonymous†user
      category by default, this is a safe capability to give to users
      because it is internally restricted to read-only queries on the
      tickets table only. (This restriction is done with an SQLite
      authorization hook, not by any method so weak as SQL text
      filtering.) Mnemonic: new <b>t</b>icket report.
    </td>
  </tr> 

  <tr id="u">
    <th>u</th>
    <th>n/a</th>
    <td>
      Inherit all capabilities of the “reader†user category; does not
      have a dedicated flag internally within Fossil. Mnemonic:
      <a href="./index.md#ucat"><b>u</b>ser</a>
    </td>
  </tr> 

  <tr id="v">
    <th>v</th>
    <th>n/a</th>
    <td>
      Inherit all capabilities of the “developer†user category; does
      not have a dedicated flag internally within Fossil.  Mnemonic:
      de<b>v</b>eloper.
    </td>
  </tr> 

  <tr id="w">
    <th>w</th>
    <th>WrTkt</th>
    <td>
      Edit existing tickets. Granting this capability also grants <a
      href="#r"><b>RdTkt</b></a>, <a href="#c"><b>ApndTkt</b></a>, and
      <a href="#n"><b>NewTkt</b></a>. Mnemonic: <b>w</b>rite to ticket.
    </td>
  </tr> 

  <tr id="x">
    <th>x</th>
    <th>Private</th>
    <td>
      Push or pull <a href="../private.wiki">private branches</a>.
      Mnemonic: e<b>x</b>clusivity; “x†connotes unknown material in
      many Western languages due to its <a
      href="https://en.wikipedia.org/wiki/La_Géométrie#The_text">traditional
      use in mathematics</a>.
    </td>
  </tr> 

  <tr id="y">
    <th>y</th>
    <th>WrUnver</th>
    <td>
      Push <a href="../unvers.wiki">unversioned content</a>. Mnemonic:
      <b>y</b>ield, <a href="https://en.wiktionary.org/wiki/yield">sense
      4</a>: “hand over.â€
    </td>
  </tr> 

  <tr id="z">
    <th>z</th>
    <th>Zip</th>
    <td>
      Pull archives of particular repository versions via <a
      href="/help?cmd=/zip"><tt>/zip</tt></a>, <a
      href="/help?cmd=/tarball"><tt>/tarball</tt></a>, and <a
      href="/help?cmd=/sqlar"><tt>/sqlar</tt></a> URLs. This is an
      expensive capability to grant, because creating such archives can
      put a large load on <a href="../server/">a Fossil server</a> which
      you may then need to <a href="../loadmgmt.md">manage</a>.
      Mnemonic: <b>z</b>ip file download.
    </td>
  </tr> 

  <tr id="2">
    <th>2</th>
    <th>RdForum</th>
    <td>
      Read <a href="../forum.wiki">forum posts</a> by other users.
      Mnemonic: from thee <b>2</b> me.
    </td>
  </tr> 

  <tr id="3">
    <th>3</th>
    <th>WrForum</th>
    <td>
      Create new forum threads, reply to threads created by others, and
      edit one’s own posts. New posts are <a
      href="../forum.wiki#moderation">held for moderation</a> and do
      not appear in repo clones or syncs. Granting this capability also
      grants <a href="#2"><b>RdForum</b></a>.   Mnemonic: post for
      <b>3</b> audiences: me, <a href="#5">the mods</a>, and <a
      href="https://en.wikipedia.org/wiki/The_Man">the Man</a>.
    </td>
  </tr> 

  <tr id="4">
    <th>4</th>
    <th>WrTForum</th>
    <td>
      Extends <a href="#3"><b>WrForum</b></a>, bypassing the moderation
      and sync restrictions. Mnemonic: post <b>4</b> immediate release.
    </td>
  </tr> 

  <tr id="5">
    <th>5</th>
    <th>ModForum</th>
    <td>
      <a href="../forum.wiki#moderation">Moderate forum posts</a>.
      Granting this capability also grants <a
      href="#4"><b>WrTForum</b></a> and <a href="#2"><b>RdForum</b></a>,
      so a user with this cap never has to moderate their own posts.
      Mnemonic: “May I have <b>5</b> seconds of your time, honored
      Gatekeeper?â€
    </td>
  </tr> 

  <tr id="6">
    <th>6</th>
    <th>AdminForum</th>
    <td>
      Users with this capability see a checkbox on unmoderated forum
      posts labeled “Trust user X so that future posts by user X do not
      require moderation.†Checking that box and then clicking the
      moderator-only “Approve†button on that post grants <a
      href="#4"><b>WrTForum</b></a> capability to that post’s author.
      There is currently no UI for a user with this cap to
      <em>revoke</em> trust from a user once it is granted; only <a
      href="#a"><b>Admin</b></a> and <a href="#s"><b>Setup</b></a> can
      currently revoke granted caps.  Granting this capability also
      grants <a href="#5"><b>ModForum</b></a> and those it in turn
      grants.  Mnemonic: “I’m <b>6</b> [sick] of hitting Approve on your
      posts!â€
    </td>
  </tr> 

  <tr id="7">
    <th>7</th>
    <th>EmailAlert</th>
    <td>
      User can sign up for <a href="../alerts.md">email alerts</a>.
      Mnemonic: <a href="https://en.wikipedia.org/wiki/Heaven_Can_Wait">Seven can
      wait</a>, I’ve got email to read now.
    </td>
  </tr> 

  <tr id="A">
    <th>A</th>
    <th>Announce</th>
    <td>
      Send email announcements to users <a href="#7">signed up to
      receive them</a>. Mnemonic: <b>a</b>nnounce.
    </td>
  </tr> 

  <tr id="C">
    <th>C</th>
    <th>Chat</th>
    <td>
      Allow access to the <tt>/chat</tt> room.
    </td>
  </tr> 

  <tr id="D">
    <th>D</th>
    <th>Debug</th>
    <td>
      Enable debugging features. Mnemonic: <b>d</b>ebug.
    </td>
  </tr> 

  <tr id="L">
    <th>L</th>
    <th>Is-logged-in</th>
    <td>
      This is not a real capability, but is used in certain capability
      checks, e.g. via <a href="../th1.md#capexpr">capexpr</a>. It
      resolves to true if the current user is logged in.
      Mnemonic: <b>L</b>ogged in.
    </td>
  </tr> 

</table>

<hr/>

<p id="backlink"><a href="./"><em>Back to Administering User
Capabilities</em></a></p>
Added www/cgi.wiki.









































































































































































































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<title>CGI Script Configuration Options</title>

<h1>Summary</h1>

It is not necessary to have a central server in order to use Fossil.
But a central server can help a project run more smoothly by giving developers
a common point of rendezvous for syncing, and by providing a web-based
portal where developers and non-developers alike can learn about the
project and its current state.

Setting up a server using Fossil is easy.
A [./server/|separate document] talks about all of the many different methods for
setting up a Fossil server, one of which is [./server/any/cgi.md | as a CGI
script].  CGI is the technique that the three
[./selfhost.wiki|self-hosting Fossil repositories] all use.

Setting up a Fossil server using CGI is mostly about writing a short
script (usually just 2 lines) in the cgi-bin folder of an ordinary
web-server.  But there are a lot of extra options that can be added
to this script, to customize the configuration.  This article describes
those options.

<h1>CGI Script Options</h1>

The CGI script used to launch a Fossil server will usually look something
like this:

<verbatim>
#!/usr/bin/fossil
repository: /home/www/fossils/myproject.fossil
</verbatim>

Of course, pathnames will likely be different.  The first line 
(the "[wikipedia:/wiki/Shebang_(Unix)|shebang]")
always gives the name of the Fossil executable.  Subsequent lines are of
the form "<b>property:&nbsp;argument&nbsp;...</b>".
The remainder of this document describes the available properties and
their arguments.

<hr>

<h2 id="repository">repository: <i>PATH</i></h2>

This property defines the Fossil repository that the server will use.
Every Fossil CGI requires either this property or the
[#directory|<b>directory:</b>] property (but not both).
Many Fossil CGI scripts have this one property and no other.


<h2 id="directory">directory: <i>PATH</i></h2>

The PATH is the name of a directory that contains one or more Fossil
repository files having the suffix ".fossil".  If this property is
used instead of [#repository|<b>repository:</b>], then the Fossil
server is able to serve all of the repositories in the directory.  The
specific repository used is selected by a prefix on the PATH_INFO. See
the notes for the [#repolist|<b>repolist</b>] option regarding name
collisions between subdirectories and repository files.


<h2 id="notfound">notfound: <i>URL</i></h2>

If the [#directory|<b>directory:</b>] option is used and if the PATH_INFO
of the HTTP request does not correspond to any Fossil repository, then
the request redirects to URL.


<h2 id="repolist">repolist</h2>

This is a Boolean property.
If it is present, and if the [#directory:|<b>directory:</b>] option is used,
and if the PATH_INFO string is empty, then Fossil will show a list
of available Fossil repositories.

The "skin" of the reply is determined by the first
repository in the list that has a non-zero
[/help?cmd=repolist-skin|repolist-skin] setting.
If no repository has such a non-zero repolist-skin setting, then
the repository list is generic HTML without any decoration.

The repolist-generated page recurses into subdirectories and will list
all <tt>*.fossil</tt> files found, with the following exceptions:

   *  Filenames starting with a period are treated as "hidden" and skipped.

   *  Subdirectory names which match the base name of a fossil file in
      the same directory are listed in the resulting page but are not
      hyperlinked because the links would be ambiguous and the
      repositories in the subdirectories would be unreachable to
      clients. For example, any repositories under subdirectory
      <tt>XYZ</tt> are unreachable if <tt>XYZ.fossil</tt> exists in
      the same directory as <tt>XYZ</tt>, noting that this particular
      name check is case-insensitive. The entries for such
      repositories are clearly marked in the repolist page's output to
      make the user aware of the problem. To make them accessible,
      move them into a directory which does not share a base name with
      a repository file.


<h2 id="localauth">localauth</h2>

This is a Boolean property.
If it is present, [./caps/ref.html#s | setup capability]
is granted to any HTTP request that
comes in over a loopback interface, such as 127.0.0.1.


<h2 id="skin">skin: <i>NAME</i></h2>

If NAME is the name of one of the built-in skins supported by Fossil,
then this option causes Fossil to display using that built-in skin,
and to ignore any custom skin that might be configured in the repository
itself.

So, if you wanted to set up a server for a single Fossil project, but
also give users the option to use several of the different built-in
skins, you could create multiple CGI scripts, each with a different
"<b>skin:</b>" property, but all pointing to the same <b>repository:</b>.
Then users can select which skin to use by using the appropriate CGI.


<h2 id="files">files: </i>GLOBLIST</i></h2>

The GLOBLIST argument is a comma-separate list of "globs" that specify
filenames.  In [#directory|<b>directory:</b> mode], if the PATH_INFO
does not identify any Fossil repository, but it does refer some other
file in the directory, and that filename matches one of the glob patterns
in the GLOBLIST, then the file is returned as static content.


<h2 id="setenv">setenv: <i>NAME VALUE</i></h2>

This parameter causes additional environment variable NAME to have VALUE.
This parameter can be repeated as many times as necessary.


<h2 id="HOME">HOME: <i>PATH</i></h2>

This parameter is a short-hand for "<b>setenv HOME <i>PATH</i></b>".


<h2 id="cgi-debug">cgi-debug: <i>FILE</i></h2>

Cause CGI-related debugging information to be appended in <i>FILE</i>.  Use
this to help debug CGI problems.


<h2 id="errorlog">errorlog: <i>FILENAME</i></h2>

This setting causes the server to log any errors in FILENAME.
It is ok for multiple Fossil CGIs to share the same error log.

Setting up an error log for Fossil servers is not required, but it
is recommended.


<h2 id="timeout">timeout: <i>N</i></h2>

This property changes the timeout on each CGI request to N seconds.
If N is zero, then there is no timeout.  If this property is omitted,
then the default timeout is 300 seconds (5 minutes).


<h2 id="extroot">extroot: <i>PATH</i></h2>

This property defines the DOCUMENT_ROOT for the
[./serverext.wiki|CGI Server Extensions].  If this property
is present, then CGI Server Extensions are enabled.  When this
property is omitted, CGI Server Extensions are disabled.

A cascade of CGI invocations can occur here.  Fossil itself is
started as CGI, then Fossil can turn around and invoke a sub-CGI
extension.  The sub-CGI extension outputs reply text, when Fossil
then (optionally) augments with its own header and footer and returns
to the original requestor.  The property controls the DOCUMENT_ROOT
of the sub-CGI.


<h2 id="redirect">redirect: <i>REPO URL</i></h2>

Extract the "name" query parameter and search REPO for a check-in or
ticket that matches the value of "name", then redirect to URL.  There
can be multiple "redirect:" lines that are processed in order.  If the
repo name is "*", then an unconditional redirect to URL is taken.


<h2 id="jsmode">jsmode: <i>VALUE</i></h2>

Specifies the delivery mode for JavaScript files. See "[/help?cmd=http |
http --jsmode]" for the allowed values and their meanings.


<h2 id="mainmenu">mainmenu: <i>FILE</i></h2>

This parameter causes the contents of the given file to override the
site's <tt>mainmenu</tt> configuration setting, in much the same way
that the <tt>skin</tt> setting overrides the skin. This can be used to
apply a common main menu to a number of sites, and centrally maintain
it, without having to copy its contents into each site. Note, however,
that the contents of this setting are not stored in the repository and
will not be cloned along with the repository.
Added www/changes.wiki.



























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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<title>Change Log</title>

<h2 id='v2_25'>Changes for version 2.25 (2024-11-06)</h2>

  *  The "[/help?cmd=ui|fossil ui /]" command now works even for repositories
     that have non-ASCII filenames
  *  Add the [/help?cmd=tree|fossil tree] command.
  *  On case-insensitive filesystems, store files using the filesystem's
     preferred case rather than the case typed in by the user.
  *  Change the name "fossil cherry-pick" command to "fossil cherrypick",
     which is more familiar to Git users.  Retain the legacy name for
     compatibility.
  *  Add new query parameters to the [/help?cmd=/timeline|/timeline page]:
     d2=, p2=, and dp2=.
  *  Add options to the [/help?cmd=tag|fossil tag] command that will list tag values.
  *  Add the -b|--brief option to the [/help?cmd=status|fossil status] command.
  *  Add ability to upload unversioned files via the [/help?cmd=/uvlist|/uvlist page].
  *  Add history search to the [/help?cmd=/chat|/chat page].
  *  Add Unix socket support to the [/help?cmd=server|server command].
  *  On Windows, use the root certificates managed by the operating system
     (requires OpenSSL 3.2.0 or greater).
  *  Take into account zero-width and double-width unicode characters when
     formatting the command-line timeline.
  *  Update the built-in SQLite to version 3.47.0.  Precompiled binaries are
     linked against OpenSSL 3.4.0.
  *  Numerous minor fixes and additions.


<h2 id='v2_24'>Changes for version 2.24 (2024-04-23)</h2>

  *  Apache change work-around &rarr; As part of a security fix, the Apache webserver
     mod_cgi module has stopped relaying the Content-Length field of the HTTP
     reply header from the CGI programs back to the client in cases where the
     connection is to be closed and the client is able to read until end-of-file.
     The HTTP and CGI specs allow for this, though it does seem rude.
     Older versions of Fossil were depending on the Content-Length header field
     being set.  To work around the change to Apache, Fossil has
     been enhanced to cope with a missing Content-Length in the reply header.  See
     [forum:/forumpost/12ac403fd29cfc89|forum thread 12ac403fd29cfc89].
  *  [./customskin.md|Skin] enhancements:
     <ul>
     <li>  Reworked the default skin to make everything more readable: larger
           fonts, more whitespace, deeper indents to show hierarchy and to
           offset command examples, etc.  Adjusted colors slightly to bring
           things into better accord with the WCAG accessibility guidelines.
           This constitutes a <strong>breaking change</strong> for those with
           custom skins; see [./customskin.md#version-2.24 | this section of
           the docs] for migration advice.
     <li>  Add a new link added to the [/login] page that allows the user to
           [/skins|select their preferred skin]. This preference is stored in
           the [/fdscookie|fossil display_settings cookie].
     <li>  The /setup_skin_admin page is simplified to let administrators easily
           select one of the built-in skins as a default, or to specify a
           custom skin.
     </ul>
  *  If an "ssh:" sync fails in a way that suggests that the fossil executable
     could not be found on the remote host, then retry after adding a PATH=
     prefix to the command.  This helps "ssh:" to "just work" when the server
     is a Mac.
  *  Enhancements to the [/help?cmd=/timeline|/timeline page]:
     <ul>
     <li> Add the x= query paramater
     <li> Add the shortcut tl= and rl= query parameters
     <li> Add support for from=,ft= and from=,bt= query parameter combinations
     <li> Automatically highlight the endpoints for from=,to= queries.
     <li> Add the to2=Z query parameter to augment from=X,to=Y so that the
          path from X to Z is shown if Y cannot be found.
     </ul>
  *  Moved the /museum/repo.fossil file referenced from the Dockerfile from
     the ENTRYPOINT to the CMD part to allow use of --repolist mode.
  *  The [/uvlist] page now shows the hash algorithm used so that
     viewers don't have to guess.  The hash is shown in a fixed-width
     font for a more visually pleasing display.
  *  If the [/help?cmd=autosync|autosync setting] contains keyword "all",
     the automatic sync occurs against all defined remote repositories, not
     just the default.
  *  Markdown formatter: improved handling of indented fenced code blocks
     that contain blank lines.
  *  When doing a "[/help?cmd=add|fossil add]" on a system with case-insensitive
     but case-preserving filenames (Mac and Windows) try to use the filename
     case as it is known to the filesystem, not the case entered by the
     user on the command-line.  See
     [forum:/forumpost/30d9c0d131610f53|forum thread 30d9c0d131610f53].
  *  Fix problems with one-click unsubscribe on email notifications.
  *  Import the latest [/doc/trunk/www/pikchr.md|Pikchr] containing support
     for "diamond" objects.
  *  Add ability to render committed Pikchr files to SVG via
     <samp>/doc/…/foo.pikchr?popup</samp> URLs.
  *  Update Fossil's internal robot detection logic so that it correctly
     identifies the new GoogleOther crawler as a robot.

<h2 id='v2_23'>Changes for version 2.23 (2023-11-01)</h2>

  *  Add ability to "close" forum threads, such that unprivileged users
     may no longer respond to them. Only administrators can close
     threads or respond to them by default, and the
     [/help?cmd=forum-close-policy|forum-close-policy setting] can be
     used to add that capability to moderators.
  *  Add the [/help?cmd=all|fossil all whatis] command.
  *  The [/help?cmd=status|fossil status] command and relevant UI pages now
     correctly report files which were both renamed <b>and</b> edited as such.
  *  Show default value of settings that have a default in
     [/help?cmd=help|fossil help SETTING] output.
  *  On timeline graphs, show closed check-ins using an X in the middle of the
     node circle or box.
  *  New options for email notification:  Get email only for the first
     post in each new thread, and/or posts that are in reply to my posts.
  *  Fix a regression bug introduced in version 2.22 that caused FTS5 searches
     to fail for terms containing non-ASCII characters.
  *  Improved defense-in-depth against malicious attack:
     <ul>
     <li> When an attempted SQL injection attack is detected, return
          HTTP result code 418, which can signal the web server to sanction
          the attacking IP address.
     <li> Better defense against cross-site request forgery (CSRF)
          attacks.
     <li> Improvements to static analysis of source code (the codecheck1.c
          file in the source tree).
     </ul>
  *  Enhance the [/help?cmd=/dir|treeview file listings]
     ([/dir?type=tree&ci=trunk|example]) by displaying file sizes
     and adding the option to sort by file size.
  *  The [/help?cmd=fts-config|fossil fts-config] command now shows how much
     repository space is used by the full-text index.
  *  Changing a setting to an empty string is now the same as deleting the
     setting, in most cases.  There are a few exceptions, indicated by the
     keep-empty flag on the setting definition.
  *  The [/help?cmd=branch|fossil branch list] command can now filter branches
     that have/have not been merged into the current branch.
  *  Improvements to interactions with remote repositories over SSH:
     <ul>
     <li> Print the text of the SSH command that is run to do remote interaction,
          for full disclosure to the operator.
     <li> Add a PATH= argument to the [/help?cmd=ui|fossil ui remote:/] and
          [/help?cmd=patch|fossil patch push/pull remote:...] commands so that
          they work when the "remote" machine is a Mac and the "fossil"
          executable is in the $HOME/bin directory.
     </ul>
  *  Update built-in libraries SQLite, ZLib, Pikchr to their latest versions.
  *  Documentation enhancements and typo fixes.


<h2 id='v2_22'>Changes for version 2.22 (2023-05-31)</h2>
  *  Enhancements to the [/help?cmd=/timeline|/timeline webpage]: <ol type="a">
     <li> Add the ft=TAG query parameter which in combination with d=Y
          shows all descendants of Y up to TAG
     <li> Enhance the s=PATTERN (search) query parameter so that forum post
          text is also searched when the "vfx" query parameter is used
     <li> Fix the u= (user) query parameter so that it works with a= and b=
     <li> Add the oldestfirst query parameter to show the events in reverse order.
          Useful in combination with y=f and vfs and perhaps also u= to show all
          forum events in chronological order
     <li> For the p=X and bt=Y query parameter combination, if Y is a tag that
          identifies multiple check-ins, search backwards in time for Y beginning
          at X
     </ol>
  *  Administrators can select to skip sending notifications about new forum
     posts.
  *  If the value N is negative in "--context N" or "-c N" to the various diff
     commands, then treat it as infinite and show the complete file content.
  *  The stock OCI container no longer includes BusyBox, thus no longer
     needs to start as root to chroot that power away. That in turn
     frees us from needing to build and install the container as root,
     since it no longer has to create a private <tt>/dev</tt> tree
     inside the jail for Fossil's use.
  *  Add support for the trigram tokenizer for FTS5 search to enable
     searching in Chinese.
  *  Comment lines (starting with a '#') are now supported inside
     [./settings.wiki#versionable|versioned settings].
  *  Default permissions for anonymous users in new repositories are
     changed to "hz".
  *  The [/help?cmd=status|fossil status] command now detects when a
     file used to be a symlink and has been replaced by a regular file.
     (It previously checked for the inverse case only.)
  *  The [/help?cmd=empty-dirs|empty-dirs setting] now reuses the same
     parser as the *-glob settings instead of its prior idiosyncratic
     parser, allowing quoted whitespace in patterns.
  *  Enhancements to the [/help?cmd=/reports|/reports webpage]:
     <ol type="a">
     <li> The by-week, by-month, and by-year options now show an estimated
          size of the current week, month, or year as a dashed box.
     <li> New sub-categories "Merge Check-ins" and "Non-Merge Check-ins".
     </ol>

<h2 id='v2_21'>Changes for version 2.21 (2023-02-25)</h2>
  *  Users can request a password reset.  This feature is disabled by default.
     Use the new [/help?cmd=self-pw-reset|self-pw-reset property] to enable it.
     New web pages [/help?cmd=/resetpw|/resetpw] and
     [/help?cmd=/reqpwreset|/reqpwreset] added.
  *  Add the [/help?cmd=repack|fossil repack] command (together with
     [/help?cmd=all|fossil all repack]) as a convenient way to optimize the
     size of one or all of the repositories on a system.
  *  Add the ability to put text descriptions on ticket report formats.
  *  Upgrade the test-find-pivot command to the [/help/merge-base|merge-base command].
  *  The [/help?cmd=/chat|/chat page] can now embed fossil-rendered
     views of wiki/markdown/pikchr file attachments with the caveat that such
     embedding happens in an iframe and thus does not inherit styles and such
     from the containing browser window.
  *  The [/help?cmd=all|fossil all remote] subcommand added to "fossil all".
  *  Passwords for remembered remote repositories are now stored as irreversible
     hashes rather than obscured clear-text, for improved security.
  *  Add the "nossl" and "nocompress" options to CGI.
  *  Update search infrastructure from FTS4 to FTS5.
  *  Add the [/help?cmd=/deltachain|/deltachain] page for debugging purposes.
  *  Writes to the database are disabled by default if the HTTP request
     does not come from the same origin.  This enhancement is a defense in depth
     measure only; it does not address any known vulnerabilities.
  *  Improvements to automatic detection and mitigation of attacks from
     malicious robots.

<h2 id='v2_20'>Changes for version 2.20 (2022-11-16)</h2>
  *  Added the [/help?cmd=chat-timeline-user|chat-timeline-user setting].  If
     it is not an empty string, then any changes that would appear on the timeline
     are announced in [./chat.md|the chat room].
  *  The /unsubscribe page now requests confirmation. [./alerts.md|Email notifications]
     now contain only an "Unsubscribe" link, and not a link to subscription management.
  *  Added the "[/help?cmd=branch|fossil branch lsh]" subcommand to list the
     most recently modified branches.
  *  More elements of the /info page are now inside of an accordion.
  *  Replace the <tt>--dryrun</tt> flag with <tt>--dry-run</tt> in all
     commands which still used the former name, for consistency.
  *  Rebuilt [/file/Dockerfile | the stock Dockerfile] to create a "from scratch"
     Busybox based container image via an Alpine Linux intermediary
  *  Added [/doc/trunk/www/containers.md | a new document] describing how to
     customize, use, and run that container.
  *  Added "by hour of day" report to [/reports?view=byhour|the /reports page].
  *  Improved correctness, usability, and efficiency for the case
     [/timeline?r=deltify-tkt-blobs|when values in a TICKET's column
     tend to be long and volatile].
  *  Fixed a bug [/info/ea5afad31f478396 | introduced in 2.17] that
     prevented <tt>clone --unversioned</tt> from completing the
     retrieval of UV files from the remote repo. While fixing that, enabled
     UV tracing output with <tt>clone --unversioned --verbose</tt>, making it
     consonant with <tt>uv sync --verbose</tt>.

<h2 id='v2_19'>Changes for version 2.19 (2022-07-21)</h2>
  *  On file listing pages, sort filenames using the "uintnocase" collating
     sequence, so that filenames that contains embedded integers sort in
     numeric order even if they contain a different number of digits.
     (Example:  "fossil_80_..." comes before "fossil_100.png" in the
     [/dir?ci=92fd091703a28c07&name=skins/blitz|/skins/blitz] directory listing.)
  *  Enhancements to the graph layout algorithm design to improve readability
     and promote better situational awareness.
  *  Performance enhancement for the
     [./checkin_names.wiki#root|"root:BRANCHNAME" style of tag],
     accomplished using a Common Table Expression in the underlying SQL.
  *  Sort tag listings (command line and webpage) by taking numbers into
     consideration so as to cater for tags that follow semantic versioning.
  *  On the wiki listings, omit by default wiki pages that are associated with
     check-ins and branches.
  *  Add the new "[/help?cmd=describe|fossil describe]" command.
  *  Markdown subsystem extended with [../src/markdown.md#ftnts|footnotes support].
     See corresponding [../test/markdown-test3.md|test cases],
     [/wiki?name=branch/markdown-footnotes#il|known limitations] and
     [forum:/forumthread/ee1f1597e46ec07a|discussion].
  *  Add the new special name "start:BRANCH" to refer to the first check-in of
     the branch.
  *  Support [/wiki?name=branch/generated-tkt-mimetype&p|generated "mimetype"]
     columns in the <var>TICKET</var> and <var>TICKETCHNG</var> tables.
  *  Fix [/timeline?r=fix_remote_url_overwrite_with_proxy|remote-url-overwrite]
     bug where remote-url is overwritten by the proxy setting during sync
     operation. Also require explicit "system" proxy setting to use
     "http_proxy" environment variable.
  *  Reimplemented the [/pikchrshow] app to use a WebAssembly build of
     pikchr so that it can render pikchrs on the client instead of requiring
     a server round-trip.
  *  Add the [/help?cmd=email-listid|email-listid setting]. If set, it is
     used as the List-ID header for all outbound notification emails.
  *  Add the "--branch" option to the "[/help?cmd=timeline|timeline]" command
     to restrict the displayed items to a specific branch.
  *  Add the "--versions" option to "[/help?cmd=diff|fossil diff]"
     to display details about the compared versions into the patch header.
  *  Numerous other minor enhancements.

<h2 id='v2_18'>Changes for version 2.18 (2022-02-23)</h2>
  *  Added support for [./ssl-server.md|SSL/TLS server mode] for commands
     like "[/help?cmd=server|fossil server]" and "[/help?cmd=http|fossil http]"
  *  The new [/help?cmd=cherry-pick|cherry-pick command] is an alias for
     [/help?cmd=merge|merge --cherrypick].
  *  Add new setting "[/help?cmd=large-file-size|large-file-size]".  If the size
     of any file in a commit exceeds this size, a warning is issued.
  *  Query parameter "year=YYYY" is now accepted by [/help?cmd=/timeline|/timeline].
  *  The [/help?cmd=tar|tar] and [/help?cmd=zip|zip commands] no longer
     sterilize the manifest file.
  *  Further improvement to diff alignment in cases that involve both
     edits and indentation changes.
  *  [/doc/trunk/www/chat.md|Chat] improvements:<ul>
     <li>  [/help?cmd=/chat|The /chat page] input options have been reworked
           again for better cross-browser portability.
     <li>  When sending a [/help?cmd=/chat|/chat] message fails, it is no longer
           immediately lost and sending may optionally be retried.
     <li>  [/help?cmd=/chat|/chat] can now optionally embed attachments of certain
           types directly into message bodies via an iframe.
     <li>  Add the "--as FILENAME" option to the "[/help?cmd=chat|fossil chat send]"
           command.
     <li>  Added the "[/help?cmd=chat|fossil chat pull]" command, available to
           administrators only, for backing up the chat conversation.
     </ul>
  *  Promote the test-detach command into the [/help?cmd=detach|detach command].
  *  For "[/help?cmd=pull|fossil pull]" with the --from-parent-project option,
     if no URL is specified then use the last URL from the most recent prior
     "fossil pull --from-parent-project".
  *  Add options --project-name and --project-desc to the
     "[/help?cmd=init|fossil init]" command.
  *  The [/help?cmd=/ext|/ext page] generates the SERVER_SOFTWARE environment
     variable for clients.
  *  Fix the REQUEST_URI [/doc/trunk/www/aboutcgi.wiki#cgivar|CGI variable] such
     that it includes the query string.  This is how most other systems understand
     REQUEST_URI.
  *  Added the --transport-command option to [/help?cmd=sync|fossil sync]
     and similar.

<h2 id='v2_17'>Changes for version 2.17 (2021-10-09)</h2>

  *  Major improvements to the "diff" subsystem, including: <ul>
     <li> Added new [/help?cmd=diff|formatting options]: --by, -b, --webpage, --json, --tcl.
     <li> Partial-line matching for unified diffs
     <li> Better partial-line matching for side-by-side diffs
     <li> Buttons on web-based diffs to show more context
     <li> Performance improvements
     </ul>
  *  The --branchcolor option on [/help?cmd=commit|fossil commit] and
     [/help?cmd=amend|fossil amend] can now take the value "auto" to
     force Fossil to use its built-in automatic color choosing algorithm.
  *  Fossil now [./concepts.wiki#workflow|autosyncs] prior to running
     [/help?cmd=open|fossil open].
  *  Add the [/help?cmd=ticket-default-report|ticket-default-report setting],
     which if set to the title of a ticket report causes that ticket report
     to be displayed below the search box in the /ticket page.
  *  The "nc" query parameter to the [/help?cmd=/timeline|/timeline] page
     causes all graph coloring to be omitted.
  *  Improvements and bug fixes to the new "[/help?cmd=ui|fossil ui REMOTE]"
     feature so that it works better on a wider variety of platforms.
  *  In [/help?cmd=/wikiedit|/wikiedit], show the list of attachments for
     the current page and list URLs suitable for pasting them into the page.
  *  Add the --no-http-compression option to [/help?cmd=sync|fossil sync]
     and similar.
  *  Print total payload bytes on a [/help?cmd=sync|fossil sync] when using
     the --verbose option.
  *  Add the <tt>close</tt>, <tt>reopen</tt>, <tt>hide</tt>, and
     </tt>unhide</tt> subcommands to [/help?cmd=branch|the branch command].
  *  The "-p" option to [/help?cmd=branch|fossil branch list] shows only
     private branches.
  *  The [/md_rules|Markdown formatter] now interprets the content of
     block HTML markup (such as &lt;table&gt;) in most cases.  Only content
     of &lt;pre&gt; and &lt;script&gt; is passed through verbatim.
  *  The [/help?cmd=wiki|wiki list command] no longer lists "deleted"
     pages by default. Use the new <tt>--all</tt> option to include deleted
     pages in the output.
  *  The [/help?cmd=all|fossil all git status] command only shows reports for
     the subset of repositories that have a configured Git export.
  *  The [/help?cmd=/chat|/chat] configuration was reimplemented and
     provides new options, including the ability for a repository
     administrator to
     [./chat.md#notifications|extend the selection of notification sounds]
     using unversioned files.
  *  Chat now uses fossil's full complement of markdown features,
     instead of the prior small subset of markup it previously supported.
     This retroactively applies to all chat messages, as they are
     markdown-processed when they are sent instead of when they
     are saved.
  *  Added a chat message preview mode so messages can be previewed
     before being sent. Similarly, added a per-message ability to view
     the raw un-parsed message text.
  *  The hotkey to activate preview mode in [/help?cmd=/wikiedit|/wikiedit],
     [/help?cmd=/fileedit|/fileedit], and [/help?cmd=/pikchrshow|/pikchrshow]
     was changed from ctrl-enter to shift-enter in order to align with
     [/help?cmd=/chat|/chat]'s new preview feature and related future
     changes.

<h2 id='v2_16'>Changes for Version 2.16 (2021-07-02)</h2>
  *  <b>Security:</b> Fix the client-side TLS so that it verifies that the
     server hostname matches its certificate.
  *  The default "ssh" command on Windows is changed to "ssh" instead of the
     legacy "plink", as ssh is now generally available on Windows systems.
     Installations that still need to use the legacy "plink" can make that
     happen by running: '<tt>fossil set ssh-command "plink -ssh" --global</tt>'.
  *  Added the [./patchcmd.md|fossil patch] command.
  *  The [/help?cmd=ui|fossil ui] command is enhanced in multiple ways:<ol>
     <li> The REPOSITORY argument can be the name of a check-out directory.
     <li> If the REPOSITORY argument is prefixed by "HOST:" or "USER@HOST:"
          then the ui is run on the remote machine and tunnelled back to the local
          machine using ssh.  (The latest version of fossil must be installed on
          both the local and the remote for this to work correctly.)
     <li> The new --nobrowser and --fossilcmd options is provided.
     </ol>
  *  The [/brlist|/brlist web page] allows the user to
     select multiple branches to be displayed together in a single
     timeline.
  *  The [./forum.wiki|Forum] provides a hyperlink on the author of each
     post that goes to a timeline of recent posts by that same author.
  *  Added the "[/help?cmd=bisect|fossil bisect run]" command for improved
     automation of bisects.
  *  The [/help?cmd=merge|fossil merge] command now does a better job merging
     branches where files have been renamed between the current branch and the
     branch being merged.
  *  The [/help?cmd=open|fossil open] command allows the repository file
     to be inside the working directory without requiring the --force flag.
  *  The [/help?cmd=/wikiedit|/wikiedit] and [/help?cmd=/wikinew|/wikinew]
     pages now default to markdown format.
  *  The [/help?cmd=/login|/login] page now links to a user's forum post
     timeline if the repository has forum posts.
  *  Tags may now be propagated for forum posts, wiki pages, and technotes.
     The [/help?cmd=tag|tag command] can now manipulate and list such tags.
  *  [./caps/login-groups.md|Login-Groups] are now shown on the repository
     list of the "[/help?cmd=all|fossil all ui]" command.
  *  Administrators can configure [./alerts.md|email alerts] to expire
     a specific number of days (ex: 365) after the last user contact with
     the Fossil server. This prevents alert emails being sent to
     abandoned email accounts forever.
  *  SQL that defines [/tktsetup_tab|database objects for tickets] now
     [/timeline?c=c717f1ef9a1a4c91|can DROP] a VIEW or an INDEX provided
     that its name starts with '<code>ticket</code>' or '<code>fx_</code>'.
  *  Update the built-in SQLite to version 3.36.0.
  *  Numerous other minor enhancements.

<h2 id='v2_15'>Changes for Version 2.15 (2021-03-26) and Patch 2.15.1 on (2021-04-07)
    and 2.15.2 on (2021-06-15)</h2>
  *  <b>Patch 2.15.2:</b> Fix the client-side TLS so that it verifies that the
     server hostname matches its certificate. <b>Upgrading to
     the patch is recommended.</b>
  *  <b>Patch 2.15.1:</b> Fix a data exfiltration bug in the server.  <b>Upgrading to
     the patch is recommended.</b>
  *  The [./defcsp.md|default CSP] has been relaxed slightly to allow
     images to be loaded from any URL.  All other resources are still
     locked down by default.
  *  The built-in skins all use the "[/help?cmd=mainmenu|mainmenu]"
     setting to determine the content of the main menu.
     The ability to edit the
     "mainmenu" setting is added on the /Admin/Configuration page.
  *  The hamburger menu is now available on most of the built-in skins.
  *  Any built-in skin named "X" can be used instead of the standard
     repository skin by adding the URL parameter <tt>skin=X</tt> to the
     request.  The selection is persisted using the display
     preferences cookie unless the "once" query parameter is also
     included.  The [/skins] page may be used to select a skin.
  *  The [/cookies] page now gives the user an opportunity to delete
     individual cookies.  And the /cookies page is linked from the
     /sitemap, so that it appears in hamburger menus.
  *  The [/sitemap] extensions are now specified by a single new
     "[/help?cmd=sitemap-extra|sitemap-extra setting]",
     rather than a cluster of various
     "sitemap-*" settings.  The older settings are no longer used.
     <b>This change might require minor server configuration
     adjustments on servers that use /sitemap extensions.</b>
     The /Admin/Configuration page provides the ability to edit
     the new "sitemap-extra" setting.
  *  Added the "--ckout-alias NAME" option to
     [/help?cmd=ui|fossil ui], [/help?cmd=server|fossil server], and
     [/help?cmd=http|fossil http].  This option causes Fossil to
     understand URIs of the form "/doc/NAME/..." as if they were
     "[/help?cmd=/doc|/doc/ckout/...]", to facilitate testing of
     [./embeddeddoc.wiki|embedded documentation] changes prior to
     check-in.
  *  For diff web pages, if the diff type (unified versus side-by-side)
     is not specified by a query parameter, and if the
     "[/help?cmd=preferred-diff-type|preferred-diff-type]"
     setting is omitted or less than 1, then select the diff type based
     on a guess of whether or not the request is coming from a mobile
     device.  Mobile gets unified and desktop gets side-by-side.
  *  The various pages which show diffs now have toggles to show/hide
     individual diffs.
  *  Add the "[/help?cmd=preferred-diff-type|preferred-diff-type]"
     setting to allow an admin to force a default diff type.
  *  The "pikchr-background" setting is now available in
     "detail.txt" skin files, for better control of Pikchr
     colors in inverted color schemes.
  *  Add the <tt>--list</tt> option to the
     [/help?cmd=tarball|tarball],
     [/help?cmd=zip|zip], and [/help?cmd=sqlar|sqlar]
     commands.
  *  The javascript used to implement the hamburger menu on the
     default built-in skin has been made generic so that it is usable
     by a variety of skins, and promoted to an ordinary built-in
     javascript file.
  *  New TH1 commands:
     "[/doc/trunk/www/th1.md#bireqjs|builtin_request_js]",
     "[/doc/trunk/www/th1.md#capexpr|capexpr]",
     "foreach", "lappend", and "string match"
  *  The [/help/leaves|leaves command] now shows the branch point
     of each leaf.
  *  The [/help?cmd=add|fossil add] command refuses to add files whose
     names are reserved by Windows (ex: "aux") unless the --allow-reserved
     option is included.  This helps prevent Unix users from accidentally
     creating check-ins that are unreadable by Windows users.
  *  Add the "re=" query parameter to the [/help?cmd=/dir|/dir] webpage,
     for symmetry with the [/help?cmd=/tree|/tree] page.
  *  Update the built-in SQLite to version 3.35.0.
  *  The ./configure script now has the --print-minimum-sqlite-version option
     that prints the minimum SQLite version required by the current version
     of Fossil.  This might be used by integrators who insist on building
     Fossil to link against the system SQLite library rather than the
     built-in copy of SQLite, to verify that their system SQLite library
     is recent enough.
  *  Webpage that shows [/help?cmd=/whistory|history of a wiki page]
     gained client-side UI to help with comparison between two arbitrary
     versions of a wiki (by the means of anchoring a "baseline" version)
     and the ability to squeeze several sequential edits made by the same
     user into a single "recycled" row (the latest edit in that sequence).

<h2 id='v2_14'>Changes for Version 2.14 (2021-01-20) and Patch 2.14.1 on (2021-04-07)
    and 2.14.2 on (2021-06-15)</h2>
  *  <b>Patch 2.14.2:</b> Fix the client-side TLS so that it verifies that the
     server hostname matches its certificate. <b>Upgrading to
     the patch is recommended.</b>
  *  <b>Patch 2.14.1:</b> Fix a data exfiltration bug in the server.
     <b>Upgrading to the patch is recommended.</b>
  *  <b>Schema Update Notice #1:</b>
     This release drops a trigger from the database schema (replacing
     it with a TEMP trigger that is created as needed).  This
     change happens automatically the first time you
     add content to a repository using Fossil 2.14 or later.  No
     action is needed on your part. However, if you upgrade to
     version 2.14 and then later downgrade or otherwise use an earlier
     version of Fossil, the email notification mechanism may fail
     to send out notifications for some events, due to the missing
     trigger.  If you want to
     permanently downgrade an installation, then you should run
     "[/help?cmd=rebuild|fossil rebuild]" after the downgrade
     to get email notifications working again.  If you are not using
     email notification, then the schema change will not affect you in
     any way.
  *  <b>Schema Update Notice #2:</b>
     This release changes how the descriptions of wiki edits are stored
     in the EVENT table, for improved display on timelines.  You must
     run "[/help?cmd=rebuild|fossil rebuild]" to take advantage of
     this enhancement.  Everything will still work without
     "fossil rebuild", except you will get goofy descriptions of
     wiki updates in the timeline.
  *  Add support for [./chat.md|Fossil chat].
  *  The "[/help?cmd=clone|fossil clone]" command is enhanced so that
     if the repository filename is omitted, an appropriate name is derived
     from the remote URL and the newly cloned repo is opened.  This makes
     the clone command work more like Git, thus making it easier for
     people transitioning from Git.
  *  Added the --mainbranch option to the [/help?cmd=git|fossil git export]
     command.
  *  Added the --format option to the
     "[/help?cmd=timeline|fossil timeline]" command.
  *  Enhance the --numstat option on the
     "[/help?cmd=diff|fossil diff]" command so that it shows a total
     number of lines added and deleted and total number of files
     modified.
  *  Add the "contact" sub-command to [/help?cmd=user|fossil user].
  *  Added commands "[/help?cmd=all|fossil all git export]" and
     "[/help?cmd=all|fossil all git status]".
  *  Added the "df=CHECKIN" query parameter to the
     [/help?cmd=/timeline|/timeline page].
  *  Improvements to the "[/sitemap]" page.  Add subpages
     [/sitemap-timeline] and [/sitemap-test].
  *  Better text position in cylinder objects of Pikchr diagrams.
  *  New "details.txt" settings available to custom skins to better control
     the rendering of Pikchr diagrams:
     <ul>
     <li> pikchr-foreground
     <li> pikchr-scale
     <li> pikchr-fontscale
     </ul>
  *  Allow the use of SQL functions inside the ticket table definition
     for custom ticket configurations.
  *  The built-in SQLite is updated to version 3.35.0 alpha containing
     performance optimizations, especially performance associated with
     startup, and minor improvements to the CLI.
  *  Performance optimizations to Fossil itself.
  *  Countless improvements and enhancements to the documentation

<h2 id='v2_13'>Changes for Version 2.13 (2020-11-01)</h2>

  *  Added support for [./interwiki.md|interwiki links].
  *  Enable &lt;del&gt; and &lt;ins&gt; markup in  wiki.
  *  Improvements to the Forum threading display.
  *  Added support for embedding [./pikchr.md|pikchr]
     markup in markdown and fossil-wiki content.
  *  The new "[/help?cmd=pikchr|pikchr]" command can render
     pikchr scripts, optionally pre-processed with
     [/doc/trunk/www/th1.md|TH1] blocks and variables exactly like
     site skins are.
  *  The new [/help?cmd=/pikchrshow|pikchrshow] page provides an
     editor and previewer for pikchr markup.
  *  In [/help?cmd=/wikiedit|/wikiedit] and
     [/help?cmd=/fileedit|/fileedit], Ctrl-Enter can now be used
     initiate a preview and to toggle between the editor and preview
     tabs.
  *  The <tt>/artifact</tt> and <tt>/file</tt> views, when in
     line-number mode, now support interactive selection of a range
     of lines to hyperlink to.
  *  Enhance the [/help?cmd=/finfo|/finfo] webpage so that when query
     parameters identify both a filename and a checkin, the resulting
     graph tracks the identified file across renames.
  *  The built-in SQLite is updated to an alpha of version 3.34.0, and
     the minimum SQLite version is increased to 3.34.0 because the
     /finfo change in the previous bullet depends on enhancements to
     recursive common table expressions that are only available in
     SQLite 3.34.0 and later.
  *  Countless other minor refinements and documentation improvements.

<h2 id='v2_12'>Changes for Version 2.12.1 (2020-08-20)</h2>

  *  (2.12.1): Fix client-side vulnerabilities discovered by Max Justicz.
  *  Security fix in the "[/help?cmd=git|fossil git export]" command.
     The same fix is also backported to version 2.10.1 and 2.11.1.
     New "safety-net" features were added to prevent similar problems
     in the future.
  *  Enhancements to the graph display for cases when there are
     many cherry-pick merges into a single check-in.
     [/timeline?f=2d75e87b760c0a9|Example]
  *  Enhance the [/help?cmd=open|fossil open] command with the new
     --workdir option and the ability to accept a URL as the repository
     name, causing the remote repository to be cloned automatically.
     Do not allow "fossil open" to open in a non-empty working directory
     unless the --keep option or the new --force option is used.
  *  Enhance the markdown formatter to more closely follow the
     [https://spec.commonmark.org/0.29/#emphasis-and-strong-emphasis|CommonMark specification]
     with regard to text highlighting.
     Underscores in the middle of identifiers (ex: fossil_printf())
     no longer need to be escaped.
  *  The markdown-to-html translator can prevent unsafe HTML
     (for example: &lt;script&gt;) on user-contributed pages like forum and
     tickets and wiki.  The admin can adjust this behavior using
     the [/help?cmd=safe-html|safe-html setting] on the Admin/Wiki page.
     The default is to disallow unsafe HTML everywhere.
     [https://fossil-scm.org/forum/forumpost/3714e6568f|Example].
  *  Added the "collapse" and "expand" capability for long forum posts.
     [https://fossil-scm.org/forum/forumpost/9297029862|Example]
  *  The "[/help?cmd=remote-url|fossil remote]" command now has options for
     specifying multiple persistent remotes with symbolic names.  Currently
     only one remote can be used at a time, but that might change in the
     future.
  *  Add the "Remember me?" checkbox on the login page.  Use a session
     cookie for the login if it is not checked.
  *  Added the experimental "[/help?cmd=hook|fossil hook]" command for
     managing "hook scripts" that run before checkin or after a push.
  *  Enhance the [/help?cmd=revert|fossil revert] command so that it
     is able to revert all files beneath a directory.
  *  Add the [/help?cmd=bisect|fossil bisect skip] command.
  *  Add the [/help?cmd=backup|fossil backup] command.
  *  Enhance [/help?cmd=bisect|fossil bisect ui] so that it shows all unchecked
     check-ins in between the innermost "good" and "bad" check-ins.
  *  Added the <tt>--reset</tt> flag to the "[/help?cmd=add|fossil add]",
     "[/help?cmd=rm|fossil rm]", and
     "[/help?cmd=addremove|fossil addremove]" commands.
  *  Added the "<tt>--min</tt> <i>N</i>" and "<tt>--logfile</tt> <i>FILENAME</i>"
     flags to the [/help?cmd=backoffice|backoffice] command, as well as other
     enhancements to make the backoffice command a viable replacement for
     automatic backoffice.  Other incremental backoffice improvements.
  *  Added the [/help?cmd=/fileedit|/fileedit page], which allows
     editing of text files online. Requires explicit activation by
     a setup user.
  *  Translate built-in help text into HTML for display on web pages.
     [/help?cmd=help|Example].
  *  On the [/help?cmd=/timeline|/timeline] webpage, the combination
     of query parameters "p=CHECKIN" and "bt=ANCESTOR" draws all
     ancestors of CHECKIN going back to ANCESTOR.  For example,
     [/timeline?p=202006271506&bt=version-2.11] shows all ancestors
     of the checkin that occurred on 2020-06-27 15:06 going back to
     the 2.11 release.
  *  Update the built-in SQLite so that the
     "[/help?cmd=sql|fossil sql]" command supports new output
     modes ".mode box" and ".mode json".
  *  Add the "<tt>obscure()</tt>" SQL function to the
     "[/help?cmd=sql|fossil sql]" command.
  *  Added virtual tables "<tt>helptext</tt>" and "<tt>builtin</tt>" to
     the "[/help?cmd=sql|fossil sql]" command, providing access to the
     dispatch table including all help text, and the builtin data files,
     respectively.
  *  [./delta_format.wiki|Delta compression] is now applied to forum edits.
  *  The [/help?cmd=/wikiedit|wiki editor] has been modernized and is
     now Ajax-based. The WYSIWYG editing option for Fossil-format wiki
     pages was removed. (Please let us know, via the site's Forum menu,
     if that removal unduly impacts you.) This also changes the semantics
     of the wiki "Sandbox": that pseudo-page may be freely edited but
     no longer saved via the UI (the [/help?cmd=wiki|wiki CLI command]
     can, though).
  *  The [/help?cmd=allow-symlinks|allow-symlinks setting] no longer
     syncs. It must be activated individually on any clones which require
     symlinks.
  *  Countless documentation enhancements.

<h2 id='v2_11'>Changes for Version 2.11 (2020-05-25)</h2>

  *  (2.11.2): Backport security fixes from 2.12.1
  *  (2.11.1): Backport security fix for the "fossil git export" command.
  *  Support [/md_rules|Markdown] in the default ticket configuration.
  *  Timestamp strings in [./checkin_names.wiki|object names]
     can now omit punctation.  So, for example, "202004181942" and
     "2020-04-18 19:42" mean the same thing.
  *  Enhance backlink processing so that it works with Markdown-formatted
     tickets and so that it works for wiki pages.
     Ticket [a3572c6a5b47cd5a].
     <ul><li> "[/help?cmd=rebuild|fossil rebuild]" is needed to
     take full advantage of this fix.  Fossil will continue
     to work without the rebuild, but the new backlinks will be missing.</ul>
  *  The algorithm for finding the
     [./tech_overview.wiki#configloc|location of the configuration database]
     is enhanced to be XDG-compliant.
  *  Add a hide/show feature to
     [./wikitheory.wiki#assocwiki|associated wiki] display on
     check-in and branch information pages.
  *  Enhance the "[/help?cmd=info|fossil info]" command so that it
     works with no arguments even if not within an open check-out.
  *  Many improvements to the forum and especially email notification
     of forum posts, in response to community feedback after switching
     SQLite support from a mailing list over to the forum.
  *  Minimum length of a self-registered user ID increased from 3 to 6
     characters.
  *  When the "vfx" query parameter is used on the
     "[/help?cmd=/timeline|/timeline]" page, it causes the complete
     text of forum posts to be displayed.
  *  Rework the "[/help?cmd=grep|fossil grep]" command to be more useful.
  *  Expose the [/help?cmd=redirect-to-https|redirect-to-https]
     setting to the [/help?cmd=settings|settings] command.
  *  Improve support for CGI on IIS web servers.
  *  The [./serverext.wiki|/ext page] can now render index files,
     in the same way as the embedded docs.
  *  Most commands now support the Unix-conventional "<tt>--</tt>"
     flag to treat all following arguments as filenames
     instead of flags.
  *  Added the [/help?cmd=mimetypes|mimetypes config setting]
     (versionable) to enable mimetype overrides and custom definitions.
  *  Add an option on the /Admin/Timeline setup page to set a default
     timeline style other than "Modern".
  *  In [./embeddeddoc.wiki|embedded documentation], hyperlink URLs
     of the form "/doc/$CURRENT/..." the "$CURRENT" text is translated
     into the check-in hash for the document currently being viewed.
  *  Added the [/help?cmd=/phantoms|/phantoms] webpage that shows all
     phantom artifacts.
  *  Enhancements to phantom processing to try to reduce
     bandwidth-using chatter about phantoms on the sync protocol.
  *  Security: Fossil now assumes that the schema of every
     database it opens has been tampered with by an adversary and takes
     extra precautions to ensure that such tampering is harmless.
  *  Security: Fossil now puts the Content-Security-Policy in the
     HTTP reply header, in addition to also leaving it in the
     HTML &lt;head&gt; section, so that it is always available, even
     if a custom skin overrides the HTML &lt;head&gt; and omits
     the CSP in the process.
  *  Output of the [/help?cmd=diff|fossil diff -y] command automatically
     adjusts according to the terminal width.
  *  The Content-Security-Policy is now set using the
     [/help?cmd=default-csp|default-csp setting].
  *  Merge conflicts caused via the [/help?cmd=merge|merge] and
     [/help?cmd=update|update] commands no longer leave temporary
     files behind unless the new <tt>--keep-merge-files</tt> flag
     is used.
  *  The [/help?cmd=/artifact_stats|/artifact_stats page] is now accessible
     to all users if the new "artifact_stats_enable" setting is turned
     on.  There is a new checkbox under the /Admin/Access menu to turn
     that capability on and off.
  *  Add the [/help?cmd=tls-config|fossil tls-config] command for viewing
     the TLS configuration and the list of SSL Cert exceptions.
  *  Captchas all include a button to read the captcha using an audio
     file, so that they can be completed by the visually impaired.
  *  Stop using the IP address as part of the login cookie.
  *  Bug fix: fix the SSL cert validation logic so that if an exception
     is allowed for particular site, the exception expires as soon as the
     cert changes values.
  *  Bug fix: the FTS search into for forum posts is now kept up-to-date
     correctly.
  *  Bug fix: the "fossil git export" command is now working on Windows
  *  Bug fix: display Technote items on the timeline correctly
  *  Bug fix: fix the capability summary matrix of the Security Audit
     page so that it does not add "anonymous" capabilities to the
     "nobody" user.
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 12.1 to 13.
  *  Many documentation enhancements.
  *  Many minor enhancements to existing features.

<h2 id='v2_10'>Changes for Version 2.10 (2019-10-04)</h2>

  *  (2.10.2): backport security fixes from 2.12.1
  *  (2.10.1): backport security fix for the "fossil git export" command.
  *  Added support for [./serverext.wiki|CGI-based Server Extensions].
  *  Added the [/help?cmd=repolist-skin|repolist-skin] setting used to
     add style to repository list pages.
  *  Enhance the hierarchical display of Forum threads to do less
     indentation and to provide links back to the previous message
     in the thread.  Provide sequential numbers for all messages in
     a forum thread.
  *  Add support for fenced code blocks and improved hyperlink
     processing to the [/md_rules|markdown formatter].
  *  Add support for hyperlinks to wiki pages in the
     [/md_rules|markdown formatter].
  *  Enhance the [/help?cmd=/stat|/stat] page so that it gives the
     option to show a breakdown of forum posts.
  *  The special check-in name "merge-in:BRANCH" means the source of
     the most recent merge-in from the parent branch of BRANCH.
  *  Add hyperlinks to branch-diffs on the /info page and from
     timelines of a branch.
  *  Add graphical context on the [/help?cmd=/vdiff|/vdiff] page.
  *  Uppercase query parameters, POST parameters, and cookie names are
     converted to all lowercase and entered into the parameter set,
     instead of being discarded.
  *  Change the default [./hashpolicy.wiki|hash policy] to SHA3.
  *  Timeout [./server/any/cgi.md|CGI requests] after 300 seconds, or
     some other value set by the
     [./cgi.wiki#timeout|"timeout:" property] in the CGI script.
  *  The check-in lock interval is reduced from 24 hours to 60 seconds,
     though the interval is now configurable using a setting.
     An additional check for conflicts is added after interactive
     check-in comment entry, to compensate for the reduced lock interval.
  *  Performance optimizations.
  *  Many documentation improvements.

<h2 id='v2_9'>Changes for Version 2.9 (2019-07-13)</h2>

  *  Added the [/help?cmd=git|fossil git export] command and instructions
     for [./mirrortogithub.md|creating a GitHub mirror of a Fossil project].
  *  Improved handling of relative hyperlinks on the
     [/help?cmd=/artifact|/artifact] pages for wiki. For example,
     hyperlinks and the lizard &lt;img&gt; now work correctly
     for both [/artifact/2ff24ab0887cf522] and
     [/doc/0d7ac90d575004c2415/www/index.wiki].
  *  Enhancements to the timeline graph layout, to show more information
     with less clutter.
  *  Added tool-tips to the /timeline graph.  On by default but can be
     disabled by setting the "Tooltip dwell time" to 0 in the timeline
     configuration.
  *  Copy buttons added to various check-in hash and branch name links.
  *  Double-clicking on a /timeline graph node now jumps to the /info page
     for the check-in.  So, repurpose the timestamp hyperlink to show all
     activity around that check-in in time.
  *  Added the [/help?cmd=touch|fossil touch] command, and the --setmtime
     option on the [/help?cmd=open|fossil open] and
     [/help?cmd=update|fossil update] commands.
  *  Many documentation enhancements.
  *  For the "[/help?cmd=update|fossil update]" and
     "[/help?cmd=checkout|fossil checkout]" commands, if a
     managed file is removed because it is no longer part of the target
     check-in and the directory containing the file is empty after the
     file is removed and the directory is not the current working
     directory and is not on the [/help?cmd=empty-dirs|empty-dirs]
     list, then also remove the directory.
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 11.0 to 12.1.
  *  In "[/help?cmd=regexp|fossil regexp]", "[/help?cmd=grep|fossil grep]"
     and the TH1 "regexp" command, the -nocase option now removes multiple
     diacritics from the same character (derived from SQLite's
     remove_diacritics=2)
  *  Added the [/help?cmd=/secureraw|/secureraw] page that requires the
     complete SHA1 or SHA3 hash, not just a prefix, before it will deliver
     content.
  *  Accept purely numeric ISO8601 date/time strings as long as they
     do not conflict with a hash.  Example: "20190510134217" instead of
     "2019-05-10 13:42:17".  This helps keep URLs shorter and less
     complicated
  *  Support both "1)" and "1." for numbered lists in markdown, as
     commonmark does.
  *  The sync and clone HTTP requests omit the extra /xfer path element
     from the end of the request URI. All servers since 2010 know that
     the HTTP request is for a sync or clone from the mimetype so the
     extra path element is not needed.
  *  If an automatic sync gets a permanent redirect request, then update
     the saved remote URL to the new address.
  *  Temporary filenames (for example used for external "diff" commands)
     try to preserve the suffix of the original file.
  *  Added the [/help?cmd=/thisdayinhistory|/thisdayinhistory] web page.
  *  Enhanced parsing of [/help?cmd=/timeline|/timeline] query parameters
     "ymd=", "ym=", and "yw=".  All arguments are option (in which case they
     default to the current time) and all accept ISO8601 date/times without
     punctuation.
  *  Automatically disapprove pending moderation requests for a user when
     that user is deleted.  This helps in dealing with spam-bots.
  *  Improvements to the "Capability Summary" section in the
     [/help?cmd=/secaudit0|Security Audit] web-page.
  *  Use new "ci-lock" and "ci-lock-failed" pragmas in the
     [./sync.wiki|sync protocol] to try to prevent accident forks
     caused by concurrent commits when operating in auto-sync mode.
  *  Fix a bug ([https://fossil-scm.org/forum/forumpost/c51b9a1169|details])
     that can cause repository databases to be overwritten with debugging
     output, thus corrupting the repository. This is only a factor when
     CGI debugging is enabled, and even then is a rare occurrence, but it is
     obviously an important fix.

<h2 id='v2_8'>Changes for Version 2.8 (2019-02-20)</h2>

  *  Show cherry-pick merges as dotted lines on the timeline graph.
     &rarr; The "fossil rebuild" command must be run to create and
     populate the new "cherrypick" table in the repository in order
     for this feature to operate.
  *  Add the ability to associate branches, check-ins, and tags with
     specially-named Wiki pages. This gives the ability to better
     document branches and tags, and provide more documentation on
     check-ins beyond the check-in comment.  The associated Wiki is
     automatically displayed on /info pages for check-ins, and on
     /timeline?r=BRANCH and /timeline?t=TAG pages for branches and
     tags. This feature is on by default, but can be disabled in on
     the Admin/Wiki page.
  *  Enhance the repository list page (shown for example by
     "fossil all ui") so that it shows the name and last check-in
     time for each project.  The implementation of the repository
     list page is now broken out into a separate source file (repolist.c).
  *  Allow users with Forum Supervisor permission ('6') to add Forum
     Write Trusted permission ('4') to users as they are approving a
     forum post by that user.
  *  When running a bisect, report the number of check-ins still in
     the search range and the estimated number of bisect steps remaining.
     Do this at each step of the bisect.
  *  Provide a permanent link to a bisect timeline using the bid= query
     parameter.
  *  Make the chronological forum display feature available to all users,
     and make it the default format on mobile devices.
  *  Break out Wiki setup into a separate /setup_wiki page, accessible
     on the standard menus through Admin/Wiki.
  *  Add "Next" and "Previous" buttons on the /wdiff page, allowing
     the user to step through the versions of a wiki page.
  *  Improve the display of the /whistory page.
  *  Omit the "HH:MM" timestamps on timeline graphs on narrow-screen
     devices, to improve horizontal space uses.  This helps make Fossil
     more mobile-friendly.
  *  Enhance /wcontent to show a sortable list of Wiki pages together
     with the number of revisions and the most recent change time for
     each page.
  *  Hyperlinks to Wiki pages on the /timeline go to the specific
     version of the Wiki page named in the timeline, not to the latest
     version.
  *  Enhancements to the "amend", "tag", and "reparent" commands, including
     adding options --override-date, --override-user, and --dry-run.
  *  Add the global --comment-format command-line option and the
     comment-format setting to control the display of the command-line
     timeline.
  *  Change the "fossil reparent" command so that it only works from
     within an active checkout.
  *  On the /setup_ucap_list, show administrators how many users have
     each capability.  The counts are a hyperlink to the /setup_ulist
     page showing the subset of users that have that capability.
  *  Provide the ability to redirect all HTTP pages to HTTPS.  Formerly
     one could cause this to occur for the /login page only.  That option
     still exists, but the redirect can now also be done for all pages.
  *  "Compress" the built-in javascript by omitting comments and
     leading and trailing whitespace.
  *  Detect when the repository used by a checkout is swapped out for
     a clone that uses different RID values, and make appropriate adjustments
     to the checkout database to avoid any problems.
  *  Add the backoffice-disable setting to completely disable the
     backoffice feature.
  *  Update the built-in SQLite to version 3.27.1.
  *  Various other small enhancements to webpages and documentation.


<h2 id='v2_7'>Changes for Version 2.7 (2018-09-22)</h2>

  *  Add the [./alerts.md|email alerts] feature for commits, ticket
     changes, wiki changes, forum posts, and announcements.  This is
     still a work in progress.  It is functional, but it is not as easy to
     setup and use as it ought to be.
  *  Add the [./forum.wiki|discussion forum] feature.
  *  Add new user capabilities letters needed to support alerts and forum.
     Formerly, user capabilities were letters from &#91;a-z&#93;, but with the
     enhancements, the supply of lower case letters was exhausted.
     User capabilities are now letters in &#91;a-zA-Z0-9&#93;.
  *  The built-in skins are now responsive, providing better layout on
     small screens, including mobile devices.
  *  The default skin now includes a hamburger menu that is generated
     by the [/sitemap] page.
  *  All of the built-in skins now use a
     [https://en.wikipedia.org/wiki/Content_Security_Policy|Content Security Policy (CSP)]
     to help prevent cross-site injection and forgery attacks.  There are no known
     vulnerabilities in Fossil.  The added CSP does not fix anything; it merely adds
     another layer of defense.
  *  The [/sitemap] and other list pages show as multiple columns if
     the viewing window is wide enough.
  *  There is an optional "js" file for each skin that can be used to
     hold javascript.  This file can be loaded by reference or can be
     included in the header or footer.
  *  Add the [./backoffice.md|backoffice].
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 10.0 to 11.0.
  *  Improvements to the "Security Audit" administration page
  *  Add the [/help?cmd=branch|fossil branch current] command.
  *  Add the [./grep.md|grep] command.
  *  Update the built-in SQLite to version 3.25.1.
  *  Some code and interfaces are in place to support sending and
     receiving email directly via SMTP, but this feature is not yet
     complete or ready for production use.
  *  The `mv-rm-files` setting is now compiled into Fossil in the
     default Fossil configuration; no longer must you say
     <tt>./configure --with-legacy-mv-rm</tt> to make it available.  The
     setting remains disabled by default, however, so you must still say
     <tt>fossil set mv-rm-files 1</tt> to enable it on each repository
     where you want hard <tt>mv/rm</tt> behavior.

<h2 id='v2_6'>Changes for Version 2.6 (2018-05-04)</h2>

  *  Fix a bug that was causing crashes while trying to clone the TCL
     repository.  This fix is the main reason for the current release.
  *  Added the new "Classic" timeline viewing mode.  "Classic" is the
     same as "Verbose" in the previous release.  The "Verbose" mode is
     now like "Compact" except the extra check-in details are shown by
     default.
  *  Add support for ETags:, Last-Modified:, and If-Modified-Since:
     cache control mechanisms.
  *  Enhance the [/help?cmd=/tarball|/tarball],
     [/help?cmd=/zip|/zip], and
     [/help?cmd=/sqlar|/sqlar] pages so that the checkin
     name to be downloaded can be expressed as part of the URI,
     and without the need for query parameters.
  *  On the [/help?cmd=/timeline|/timeline] webpage, add the days=N
     query parameter and enhance the ymd=DATE and yw=DATE query parameters
     to accept 'now' as an argument to show the latest day or week.
  *  In the web page that comes up in response to the
     [/help?cmd=all|fossil all ui] command, show the last modification
     time for each repository, and allow click-to-sort on the modification
     time column.
  *  In the tarball cache replacement algorithm, give extra weight to
     tarballs that have been accessed more than once.
  *  Additional defenses against web-based attacks.  There have not been
     any known vulnerabilities.  We are just being paranoid.
  *  Update the built-in SQLite to an alpha version of 3.24.0.

<h2 id='v2_5'>Changes for Version 2.5 (2018-02-07)</h2>

  *  Numerous enhancements to the look and feel of the web interface.
     Especially:  Added separate "Modern", "Compact", "Verbose", and
     "Columnar" view options on timelines.
  *  Common display settings (such as the "view" option and the number
     of rows in a timeline) are held in a cookie and thus persist
     across multiple pages.
  *  Rework the skin editing process so that changes are implemented
     on one of nine /draft pages, evaluated, then merged back to the
     default.
  *  Added the [https://fossil-scm.org/skins/ardoise/timeline|Ardoise]
     skin.
  *  Fix the "fossil server" command on Unix to be much more responsive
     to multiple simultaneous web requests.
  *  Use the IPv6 stack for the "fossil ui" and "fossil server"
     commands on Windows.
  *  Support for [https://sqlite.org/sqlar|SQL Archives] as a download
     option.
  *  Fossil now automatically generates the
     &lt;html&gt;&lt;head&gt;...&lt;/head&gt;&lt;body&gt;
     at the beginning of each web page if the configurable header
     lacks a &lt;body&gt; tag.
  *  Added the /artifact_stats page, currently accessible only by
     the administrator.
  *  Upgrade to the latest versions of SQLite and OpenSSL.
  *  Improved key bindings on the Tk diff screen generated by
     "fossil diff --tk".
  *  Begin factoring out in-line javascript into separately loaded
     script files.  This is a step along the
     road toward supporting a strict Content Security Policy.  More work
     is to be done.
  *  Initial infrastructure is in place to make use of the pledge()
     system call in OpenBSD.  More work is to be done.

<h2 id='v2_4'>Changes for Version 2.4 (2017-11-03)</h2>

  *  New feature: URL Aliases.  URL Aliases allow an administrator
     to define their own URLs on the web interface that are rewritten to
     built-in URLs with specific parameters.  Create and configure URL Aliases
     using the /Setup/URL_Aliases menu option in the web interface.
  *  Add tech-note search capability.
  *  Add the -r|--revision and -o|--origin options to the
     [/help?cmd=annotate|annotate] command.
  *  Add the origin= query parameter to the [/help?cmd=/annotate|/annotate]
     webpage.
  *  The [/help?cmd=annotate|fossil annotate] command and the
     [/help?cmd=/annotate|/annotate] web page go backwards in time as far
     as can be computed in 30 milliseconds by default, rather than stopping
     after 20 steps.  The new limit= query parameter or the --limit command-line
     option can be used to alter this timeout.
  *  Provide separate [/help#settings|on-line help screens for each setting].
  *  Back out support for the --no-dir-symlinks option
  *  Remove support from the legacy configuration sync protocol.  The only
     way now to do a configuration push or pull is to use the new protocol that
     was added in 2011.
  *  Add the from= and to= query parameters to [/help?cmd=/fdiff|/fdiff]
     in order to get a diff of two files in the same check-in.
  *  Fix the "ssh://" protocol to prevent an attack whereby the attacker convinces
     a victim to run a "clone" with a dodgy URL and thereby gains access to their
     system.
  *  Provide a checkbox that will temporarily disable all ad-units.
  *  Improvements to the [/help?cmd=/stat|/stat] page
  *  Various new hyperlinks to the [/help?cmd=/bloblist|/bloblist]
     and [/help?cmd=/bigbloblist|/bigbloblist] pages.
  *  Correct the [/help?cmd=/doc|/doc] page to support read-only repositories.
  *  Correct [/help?cmd=/zip|/zip], [/help?cmd=/tarball|/tarball],
     [/help?cmd=zip|zip], and [/help?cmd=tarball|tarball] pages and commands to
     honor the versioned manifest setting when outside of an open checkout
     directory.
  *  The admin-log and access-log settings are now on by default for
     new repositories.
  *  Update the built-in SQLite to version 3.21.0.

<h2 id='v2_3'>Changes for Version 2.3 (2017-07-21)</h2>

  *  Update the built-in SQLite to version 3.20.0 (beta).
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 9.0 to 10.0.
  *  Show the last-sync-URL on the [/help?cmd=/urllist|/urllist] page.
  *  Added the "Event Summary" activity report.
     [/reports?type=ci&view=lastchng|example]
  *  Added the "Security Audit" page, available to administrators only
  *  Added the Last Login time to the user list page, for administrators only
  *  Added the --numstat option to the [/help?cmd=diff|fossil diff] command
  *  Limit the size of the heap and stack on unix systems, as a proactive
     defense against the
     [https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt|Stack Clash]
     attack.
  *  Fix "database locked" warnings caused by "PRAGMA optimize".
  *  Fix a potential XSS vulnerability on the
     [/help?cmd=/help|/help] webpage.
  *  Documentation updates

<h2 id='v2_2'>Changes for Version 2.2 (2017-04-11)</h2>

  *  GIT comment tags are now handled by Fossil during import/export.
  *  Show the content of README files on directory listings.
     ([/file/skins|example])
  *  Support for Basic Authentication if enabled (default off).
  *  Show the hash algorithms used on the
     [/help?cmd=/rcvfromlist|/rcvfromlist] page.
  *  The [/help?cmd=/tarball|/tarball] and [/help?cmd=/zip|/zip] pages
     now use the the r= query parameter
     to select which check-in to deliver.  The uuid= query parameter
     is still accepted for backwards compatibility.
  *  Update the built-in SQLite to version 3.18.0.
  *  Run "[https://www.sqlite.org/pragma.html#pragma_optimize|PRAGMA optimize]"
     on the database connection as it is closing.

<h2 id='v2_1'>Changes for Version 2.1 (2017-03-10)</h2>

  *  Add support for [./hashpolicy.wiki|hash policies] that control which
     of the Hardened-SHA1 or SHA3-256 algorithms is used to name new
     artifacts.
  *  Add the "gshow" and "gcat" subcommands to [/help?cmd=stash|fossil stash].
  *  Add the [/help?cmd=/juvlist|/juvlist] web page and use it to construct
     the [/uv/download.html|Download Page] of the Fossil self-hosting website
     using Ajax.

<h2 id='v2_0'>Changes for Version 2.0 (2017-03-03)</h2>

  *  Use the
     [https://github.com/cr-marcstevens/sha1collisiondetection|hardened SHA1]
     implementation by Marc Stevens and Dan Shumow.
  *  Add the ability to read and understand
     [./fileformat.wiki#names|artifact names] that are based on SHA3-256
     rather than SHA1, but do not actually generate any such names.
  *  Added the [/help?cmd=sha3sum|sha3sum] command.
  *  Update the built-in SQLite to version 3.17.0.

<h2 id='v1_37'>Changes for Version 1.37 (2017-01-16)</h2>

  *  Add checkbox widgets to various web pages.  See [/technote/8d18bf27e9|
     this technote] for more information.  To get the checkboxes to look as
     intended, you must update the CSS in your repository and all clones.
  *  Add the [/help/all|fossil all ui] command
  *  Add the [/help?cmd=/file|/file] webpage
  *  Enhance the [/help?cmd=/brlist|/brlist] webpage to make use of branch colors.
  *  Add support for the ms=EXACT|LIKE|GLOB|REGEXP query parameter on the
     [/help?cmd=/timeline|/timeline] webpage, with associated form widgets.
  *  Enhance the [/help/changes|changes] and [/help/status|status] commands
     with many new filter options so that specific kinds of changes can be
     found without having to pipe through grep or sed.
  *  Enhanced the [/help/sqlite3|fossil sql] command so that it opens the
     [./tech_overview.wiki#localdb|checkout database] and the
     [./tech_overview.wiki#configdb|configuration database] in addition to the
     repository database.
  *  TH1 enhancements:
     <ul><li>Add <nowiki>[unversioned content]</nowiki> command.</li>
     <li>Add <nowiki>[unversioned list]</nowiki> command.</li>
     <li>Add project_description variable.</li>
     </ul>
  *  Rename crnl-glob [/help/settings|setting] to crlf-glob, but keep
     crnl-glob as a compatibility alias.
  *  Added the --command option to the [/help/diff|diff] command.
  *  Fix a C99-ism that prevents the 1.36 release from building with MSVC.
  *  Fix [/help?cmd=ticket|ticket set] when using the "+" prefix with fields
     from the "ticketchng" table.
  *  Remove the "fusefs" command from builds that do not have the underlying
     support enabled.
  *  Fixes for incremental git import/export.
  *  Minor security enhancements to
     [./encryptedrepos.wiki|encrypted repositories].
  *  Update the built-in SQLite to version 3.16.2.
  *  Update the built-in Zlib to version 1.2.11.


<h2 id='v1_36'>Changes for Version 1.36 (2016-10-24)</h2>

  *  Add support for [./unvers.wiki|unversioned content],
     the [/help?cmd=unversioned|fossil unversioned] command and the
     [/help?cmd=/uv|/uv] and [/uvlist] web pages.
  *  The [/uv/download.html|download page] is moved into
     [./unvers.wiki|unversioned content] so that the self-hosting Fossil
     websites no longer uses any external content.
  *  Added the "Search" button to the graphical diff generated by
     the --tk option on the [/help?cmd=diff|diff] command.
  *  Added the "--checkin VERSION" option to the
     [/help?cmd=diff|diff] command.
  *  Various performance enhancements to the [/help?cmd=diff|diff] command.
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 8.0 to 9.0.
  *  Update the built-in SQLite to version 3.15. Fossil now requires
     the SQLITE_DBCONFIG_MAINDBNAME interface of SQLite which is only available
     in SQLite version 3.15 and later and so Fossil will not work with
     earlier SQLite versions.
  *  Fix [https://www.mail-archive.com/fossil-users@lists.fossil-scm.org/msg23618.html|multi-line timeline bug]
  *  Enhance the [/help?cmd=purge|fossil purge] command.
  *  New command [/help?cmd=shell|fossil shell].
  *  SQL parameters whose names are all lower-case in Ticket Report SQL
     queries are filled in using HTTP query parameter values.
  *  Added support for [./childprojects.wiki|child projects] that are
     able to pull from their parent but not push.
  *  Added the -nocomplain option to the TH1 "query" command.
  *  Added support for the chng=GLOBLIST query parameter on the
     [/help?cmd=/timeline|/timeline] webpage.

<h2 id='v1_35'>Changes for Version 1.35 (2016-06-14)</h2>

  *  Enable symlinks by default on all non-Windows platforms.
  *  Enhance the [/md_rules|Markdown formatting] so that hyperlinks that begin
     with "/" are relative to the root of the Fossil repository.
  *  Rework the [/help?cmd=/setup_ulist|/setup_list page] (the User List page)
     to display all users in a click-to-sort table.
  *  Fix backslash-octal escape on filenames while importing from git
  *  When markdown documents begin with &lt;h1&gt; HTML elements, use that
     header at the document title.
  *  Added the [/help?cmd=/bigbloblist|/bigbloblist page].
  *  Enhance the [/help?cmd=/finfo|/finfo page] so that when it is showing
     the ancestors of a particular file version, it only shows direct
     ancestors and omits changes on branches, thus making it show the same set
     of ancestors that are used for [/help?cmd=/blame|/blame].
  *  Added the --page option to the [/help?cmd=ui|fossil ui] command
  *  Added the [/help?cmd=bisect|fossil bisect ui] command
  *  Enhanced the [/help?cmd=diff|fossil diff] command so that it accepts
     directory names as arguments and computes diffs on all files contained
     within those directories.
  *  Fix the [/help?cmd=add|fossil add] command so that it shows "SKIP" for
     files added that were already under management.
  *  TH1 enhancements:
     <ul><li>Add <nowiki>[array exists]</nowiki> command.</li>
     <li>Add minimal <nowiki>[array names]</nowiki> command.</li>
     <li>Add tcl_platform(engine) and tcl_platform(platform) array
     elements.</li>
     </ul>
  *  Get autosetup working with MinGW.
  *  Fix autosetup detection of zlib in the source tree.
  *  Added autosetup detection of OpenSSL when it may be present under the
     "compat" subdirectory of the source tree.
  *  Added the [/help?cmd=reparent|fossil reparent] command
  *  Added --include and --exclude options to [/help?cmd=tarball|fossil tarball]
     and [/help?cmd=zip|fossil zip] and the in= and ex= query parameters to the
     [/help?cmd=/tarball|/tarball] and [/help?cmd=/zip|/zip] web pages.
  *  Add support for [./encryptedrepos.wiki|encrypted Fossil repositories].
  *  If the FOSSIL_PWREADER environment variable is set, then use the program it
     names in place of getpass() to read passwords and passphrases
  *  Option --baseurl now works on Windows.
  *  Numerous documentation improvements.
  *  Update the built-in SQLite to version 3.13.0.

<h2 id='v1_34'>Changes for Version 1.34 (2015-11-02)</h2>

  *  Make the [/help?cmd=clean|fossil clean] command undoable for files less
     than 10MiB.
  *  Update internal Unicode character tables, used in regular expression
     handling, from version 7.0 to 8.0.
  *  Add the new [/help?cmd=amend|amend] command which is used to modify
     tags of a "check-in".
  *  Fix bug in [/help?cmd=import|import] command, handling version 3 of
     the svndump format for subversion.
  *  Add the [/help?cmd=all|all cache] command.
  *  TH1 enhancements:
     <ul><li>Add minimal <nowiki>[lsearch]</nowiki> command. Only exact
     case-sensitive matching is supported.</li>
     <li>Add the <nowiki>[glob_match]</nowiki>, <nowiki>[markdown]</nowiki>,
     <nowiki>[dir]</nowiki>, and <nowiki>[encode64]</nowiki> commands.</li>
     <li>Add the <nowiki>[tclIsSafe] and [tclMakeSafe]</nowiki> commands to
     the Tcl integration subsystem.</li>
     <li>Add 'double', 'integer', and 'list' classes to the
     <nowiki>[string is]</nowiki> command.</li>
     </ul>
  *  Add the --undo option to the [/help?cmd=diff|diff] command.
  *  Build-in Antirez's "linenoise" command-line editing library for use with
     the [/help?cmd=sqlite3|fossil sql] command on Unix platforms.
  *  Add [/help?cmd=stash|stash cat] as an alias for the
     [/help?cmd=stash|stash show] command.
  *  Automatically pull before [/help?cmd=merge|fossil merge] when auto-sync
     is enabled.
  *  Fix --hard option to [/help?cmd=mv|fossil mv] and [/help?cmd=rm|fossil rm]
     to enable them to work properly with certain relative paths.
  *  Change the mimetype for ".n" and ".man" files to text/plain.
  *  Display improvements in the [/help?cmd=bisect|fossil bisect chart] command.
  *  Updated the built-in SQLite to version 3.9.1 and activated JSON1 and FTS5
     support (both currently unused within Fossil).

<h2 id='v1_33'>Changes for Version 1.33 (2015-05-23)</h2>
  *  Improved fork detection on [/help?cmd=update|fossil update],
     [/help?cmd=status|fossil status] and related commands.
  *  Change the default skin to what used to be called "San Francisco Modern".
  *  Add the [/repo-tabsize] web page
  *  Add [/help?cmd=import|fossil import --svn], for importing a subversion
     repository into fossil which was exported using "svnadmin dump".
  *  Add the "--compress-only" option to [/help?cmd=rebuild|fossil rebuild].
  *  Use a pie chart on the [/reports?view=byuser] page.
  *  Enhanced [/help?cmd=clean|fossil clean --verily] so that it ignores
     keep-glob and ignore-glob settings.  Added the -x alias for --verily.
  *  Add the --soft and --hard options to [/help?cmd=rm|fossil rm] and
     [/help?cmd=mv|fossil mv].  The default is still --soft, but that is
     now configurable at compile-time or by the mv-rm-files setting.
  *  Improved ability to [./customgraph.md|customize the timeline graph].
  *  Improvements to the [/sitemap] page.
  *  Automatically adjust the [/help?cmd=timeline|CLI timeline] to the terminal
     width on Linux.
  *  Added <nowiki>[info commands] and [info vars]</nowiki> commands to TH1.
     These commands perform the same function as their Tcl counterparts,
     except they do not accept a pattern argument.
  *  Fix some obscure issues with TH1 expression processing.
  *  Fix titles in search results for documents that are not wiki, markdown,
     or HTML.
  *  Formally translate TH1 to Tcl return codes and vice-versa, where
     necessary, in the Tcl integration subsystem.
  *  Add [/help?cmd=leaves|fossil leaves -multiple], for finding multiple
     leaves on the same branch.
  *  Added the "Blitz" skin option.
  *  Removed the ".fossil-settings/keep-glob" file.  It should not have been
     checked into the repository.
  *  Update the built-in SQLite to version 3.8.10.2.
  *  Make [/help?cmd=open|fossil open] honor ".fossil-settings/allow-symlinks".
  *  Allow [/help?cmd=add|fossil add] to be used on symlinks to nonexistent or
     unreadable files in the same way as [/help?cmd=addremove|fossil addremove].
  *  Added fork warning to be issued if sync produced a fork
  *  Update the [/help?cmd=/info|info] page to report when a file becomes a
     symlink.  Additionally show the UUID for files whose types have changed
     without changing contents or symlink target.
  *  Have [/help?cmd=changes|fossil changes] and
     [/help?cmd=status|fossil status] report when executable or symlink status
     changes on otherwise unmodified files.
  *  Permit filtering weekday and file [/help?cmd=/reports|reports] by user.
     Also ensure the user parameter is preserved when changing types.  Add a
     field for direct entry of the user name to each applicable report.
  *  Create parent directories of [/help?cmd=settings|empty-dirs] if they don't
     already exist.
  *  Inhibit timeline links to wiki pages that have been deleted.

<h2 id='v1_33'>Changes for Version 1.32 (2015-03-14)</h2>
  *  When creating a new repository using [/help?cmd=init|fossil init], ensure
     that the new repository is fully compatible with historical versions of
     Fossil by having a valid manifest as RID 1.
  *  Anti-aliased rendering of arrowheads on timeline graphs.
  *  Added vi/less-style key bindings to the --tk diff GUI.
  *  Documentation updates to fix spellings and changes all "checkins" to
     "check-ins".
  *  Add the --repolist option to server commands such as
     [/help?cmd=server|fossil server] or [/help?cmd=http|fossil http].
  *  Added the "Xekri" skin.
  *  Enhance the "ln=" query parameter on artifact displays to accept multiple
     ranges, separate by spaces (or "+" when URL-encoded).
  *  Added [/help?cmd=forget|fossil forget] as an alias for
     [/help?cmd=rm|fossil rm].

<h2 id='v1_31'>Changes For Version 1.31 (2015-02-23)</h2>
  *  Change the auxiliary schema by adding columns MLINK.ISAUX and MLINK.PMID
     columns to the schema, to support better drawing of file change graphs.
     A [/help?cmd=rebuild|fossil rebuild] is recommended but is not required.
     so that the new graph drawing logic can work effectively.
  *  Added [/search|search] over Check-in comments, Documents, Tickets and
     Wiki.  Disabled by default.  The search can be either a full-scan or it
     can use an index that is kept up-to-date automatically.  The new
     /srchsetup web-page and the [/help?cmd=fts-config|fts-config] command
     were added to help configure the search capability.  Expect further
     enhancements to the search capabilities in subsequent releases.
  *  Added form elements to some submenus (in particular the /timeline)
     for easier operation.
  *  Added the --ifneeded option to [/help?cmd=rebuild|fossil rebuild].
  *  Added "override skins" using the "skin:" line of the CGI script or
     using the --skin LABEL option on the [/help?cmd=server|server],
     [/help?cmd=ui|ui], or [/help?cmd=http|http] commands.
  *  Embedded html documents that begin with
     &lt;doc class="fossil-doc"&gt; are displayed with standard
     headers and footers added.
  *  Allow &lt;div style='...'&gt; markup in [/wiki_rules|wiki].
  *  Renamed "Events" to "Technical Notes", while updating the technote
     display and control pages.  Add support for technotes as plain text
     or as Markdown.
  *  Added the [/md_rules] pages containing summary instructions on the
     Markdown format.
  *  Added the --repolist and --nojail options to the various server commands
     (ex: [/help?cmd=server|fossil server]).
  *  Added the [/help?cmd=all|fossil all add] subcommand to "fossil all".
  *  Improvements to the /login page.  Some hyperlinks to pages that require
     "anonymous" privileges are displayed even if the current user is "nobody"
     but automatically redirect to /login.
  *  The [/help?cmd=/doc|/doc] web-page will now try to deliver the file
     "404.md" from the top-level directory (if such a file exists) in
     place of its built-in 404 text.
  *  Download of Tarballs and ZIP Archives by user "nobody" is now enabled
     by default in new repositories.
  *  Enhancements to the table sorting controls.  More display tables
     are now sortable.
  *  Add IPv6 support to [/help?cmd=sync|fossil sync] and
     [/help?cmd=clone|fossil clone]
  *  Add more skins such as "San Francisco Modern" and "Eagle".
  *  During shutdown, check to see if the check-out database (".fslckout")
     contains a lot of free space, and if it does, VACUUM it.
  *  Added the [/mimetype_list] page.
  *  Added the [/hash-collisions] page.
  *  Allow the user of Common Table Expressions in the SQL that defaults
     ticket reports.
  *  Break out the components (css, footer, and header) for the
     various built-in skins into separate files in the source tree.

<h2 id='v1_30'>Changes For Version 1.30 (2015-01-19)</h2>
  *  Added the [/help?cmd=bundle|fossil bundle] command.
  *  Added the [/help?cmd=purge|fossil purge] command.
  *  Added the [/help?cmd=publish|fossil publish] command.
  *  Added the [/help?cmd=unpublished|fossil unpublished] command.
  *  Enhance the [/tree] webpage to show the age of each file with the option
     to sort by age.
  *  Enhance the [/brlist] webpage to show additional information about each branch
     and to be sortable by clicking on column headers.
  *  Add support for Docker. Just install docker and type
     "sudo docker run -d -p 8080:8080 nijtmans/fossil" to get it running.
  *  Add the [/help/fusefs|fossil fusefs DIRECTORY] command that mounts a
     Fuse Filesystem at the given DIRECTORY and populates it with read-only
     copies of all historical check-ins. This only works on systems that
     support FuseFS.
  *  Add the administrative log that records all configuration.
  *  Added the [/sitemap] webpage.
  *  Added the [/bloblist] web page.
  *  Let [/help?cmd=new|fossil new] no longer create an initial empty commit
     by default. The first commit after checking out an empty repository will
     become the initial commit.
  *  Added the [/help?cmd=all|fossil all dbstat] and
     [/help?cmd=all|fossil all info] commands.
  *  Update SQLite to version 3.8.8.
  *  Added the --verily option to the [/help?cmd=clean|fossil clean] command.
  *  Add the "autosync-tries" setting to control the number of autosync attempts
     before returning an error.
  *  Added a compile-time option (--with-miniz) to build using miniz instead
     of zlib.  Disabled by default.
  *  Support customization of commands and webpages, including the ability to
     add new ones, via the "TH1 hooks" feature.  Disabled by default. Enabled
     via a compile-time option.
  *  Add the <nowiki>[checkout], [render], [styleHeader], [styleFooter],
     [trace], [getParameter], [setParameter], [artifact], and
     [globalState]</nowiki> commands to TH1, primarily for use by TH1 hooks.
  *  Automatically adjust the width of command-line timeline output according to the
     detected width of the terminal.
  *  Prompt the user to optionally fix invalid UTF-8 at check-in.
  *  Added a line-number toggle option to the [/help?cmd=/info|/info]
     and [/help?cmd=/artifact|/artifact] pages.
  *  Most commands now issue errors rather than silently ignoring unrecognized
     command-line options.
  *  Use full 40-character SHA1 hashes (instead of abbreviations) in most
     internal URLs.
  *  The "ssh:" sync method on Windows now uses "plink.exe" instead of "ssh" as
     the secure-shell client program.
  *  Prevent a partial clone when the connection is lost.
  *  Make the distinction between 301 and 302 redirects.
  *  Allow commits against a closed check-in as long as the commit goes onto
     a different branch.
  *  Improved cache control in the web interface reduces unnecessary requests
     for common resources like the page logo and CSS.
  *  Fix a rare and long-standing sync protocol bug
     that would silently prevent the sync from running to completion.  Before
     this bug-fix it was sometimes necessary to do "fossil sync --verily" to
     get two repositories in sync.
  *  Add the [/finfo?name=src/foci.c|files_of_checkin] virtual table - useful
     for ad hoc queries in the [/help?cmd=sqlite3|fossil sql] interface,
     and also used internally.
  *  Added the "$secureurl" TH1 variable for use in headers and footers.
  *  (Internal:) Add the ability to include resources as separate files in the
     source tree that are converted into constant byte arrays in the compiled
     binary.  Use this feature to store the Tk script that implements the --tk
     diff option in a separate file for easier editing.
  *  (Internal:) Implement a system of compile-time checks to help ensure
     the correctness of printf-style formatting strings.
  *  Fix CVE-2014-3566, also known as the POODLE SSL 3.0 vulnerability.
  *  Numerous documentation fixes and improvements.
  *  Other obscure and minor bug fixes - see the timeline for details.

<h2 id='v1_29'>Changes For Version 1.29 (2014-06-12)</h2>
  *  Add the ability to display content, diffs and annotations for UTF16
     text files in the web interface.
  *  Add the "SaveAs..." and "Invert" buttons
     to the graphical diff display that results
     from using the --tk option with the [/help/diff | fossil diff] command.
  *  The [/reports] page now requires Read ("o") permissions. The "byweek"
     report now properly propagates the selected year through the event type
     filter links.
  *  The [/help/info | info command] now shows leaf status of the checkout.
  *  Add support for tunneling https through a http proxy (Ticket [e854101c4f]).
  *  Add option --empty to the "[/help?cmd=open | fossil open]" command.
  *  Enhanced [/help?cmd=/fileage|the fileage page] to support a glob parameter.
  *  Add -w|--ignore-all-space and -Z|--ignore-trailing-space options to
     [/help?cmd=annotate|fossil annotate], [/help?cmd=blame|fossil blame],
     [/help?cmd=diff|fossil (g)diff], [/help?cmd=stash|fossil stash diff].
  *  Add --strip-trailing-cr option to [/help?cmd=diff|fossil (g)diff] and
     [/help?cmd=stash|fossil stash diff].
  *  Add button "Ignore Whitespace" to /annotate, /blame, /ci, /fdiff
     and /vdiff UI pages.
  *  Enhance [/reports?view=byweekday|/reports] with a "byweekday" view.
  *  Enhance the [/help?cmd=cat|fossil cat] command so that it works outside
     of a checkout when using the -R command-line option.
  *  Use full-length SHA1 hashes, not abbreviations, in most hyperlinks.
  *  Correctly render the &lt;title&gt; markup on wiki pages in the
     [/help?cmd=/artifact|/artifact] webpage.
  *  Enhance the [/help?cmd=whatis|fossil whatis] command to report on attachments
     and cluster artifacts.  Added the [/help?cmd=test-whatis-all] command for
     testing purposes.
  *  Add support for HTTP Basic Authentication on [/help?cmd=clone|clone] and
     [/help?cmd=sync|sync].
  *  Fix the [/help?cmd=stash|stash] so that it remembers added files and re-adds
     them when the stash is applied.
  *  Fix the server so that it avoids writing to the database (and thus avoids
     database locking issues) on a
     [/help?cmd=pull|pull] or [/help?cmd=clone|clone].
  *  Add support for [./server.wiki#loadmgmt|server load management] using both
     a cache of expensive pages (the [/help?cmd=cache|fossil cache] command)
     and by rejecting expensive page requests when the server load average is too
     high.
  *  Add the [/help?cmd=praise|fossil praise] command as an alias for
     [/help?cmd=blame|fossil blame] for subversion compatibility.
  *  Enhance the [/help?cmd=test-diff|fossil test-diff] command with -y or --tk
     options so that it shows both filenames above their respective columns in
     the side-by-side diff output.
  *  Issue a warning if a [/help?cmd=add|fossil add] command tries to add a file
     that matches the ignore-glob.
  *  Add option -W|--width to "[/help?cmd=stash|fossil stash ls]"
     and "[/help?cmd=leaves|fossil leaves]" commands.
  *  Enhance support for running as the root user. Now works on Haiku.
  *  Added the <tt>-empty</tt> option to [/help?cmd=new|fossil new], which
     causes it to not create an initial empty commit. The first commit after
     checking out a repo created this way will become the initial commit.
  *  Enhance sync operations by committing each round-trip to minimize number
     of retransmits when autosync fails. Include option for
     [/help?cmd=update| fossil update] and [/help?cmd=merge| fossil merge] to
     continue even if missing content.
  *  Minor portability fixes for platforms where the char type is unsigned
     by default.

<h2>Changes For Version 1.28 (2014-01-27)</h2>
  *  Enhance [/help?cmd=/reports | /reports] to support event type filtering.
  *  When cloning a repository, the user name passed via the URL (if any)
     is now used as the default local admin user's name.
  *  Enhance the SSH transport mechanism so that it runs a single instance of
     the "fossil" executable on the remote side, obviating the need for a shell
     on the remote side.  Some users may need to add the "?fossil=/path/to/fossil"
     query parameter to "ssh:" URIs if their fossil binary is not in a standard
     place.
  *  Add the "[/help?cmd=blame | fossil blame]" command that works just like
     "fossil annotate" but uses a different output format that includes the
     user who made each change and omits line numbers.
  *  Add the "Tarball and ZIP-archive Prefix" configuration parameter under
     Admin/Configuration.
  *  Fix CGI processing so that it works on web servers that do not
     supply REQUEST_URI.
  *  Add options --dirsonly, --emptydirs, and --allckouts to the
     "[/help?cmd=clean | fossil clean]" command.
  *  Ten-fold performance improvement in large "fossil blame" or
     "fossil annotate" commands.
  *  Add option -W|--width and --offset to "[/help?cmd=timeline | fossil timeline]"
     and  "[/help?cmd=finfo | fossil finfo]" commands.
  *  Option -n|--limit of "[/help?cmd=timeline | fossil timeline]" now
     specifies the number of entries, just like all other commands which
     have the -n|--limit option. The various timeline-related functions
     now output "--- ?? limit (??) reached ---" at the end whenever
     appropriate. Use "-n 0" if no limit is desired.
  *  Fix handling of password embedded in Fossil URL.
  *  New <tt>--once</tt> option to [/help?cmd=clone | fossil clone] command
     which does not store the URL or password when cloning.
  *  Modify [/help?cmd=ui | fossil ui] to respect "default user" in an open
     repository.
  *  Fossil now hides check-ins that have the "hidden" tag in timeline webpages.
  *  Enhance <tt>/ci_edit</tt> page to add the "hidden" tag to check-ins.
  *  Advanced possibilities for commit and ticket change notifications over
     http using TH1 scripting.
  *  Add --sha1sum and --integrate options
     to the "[/help?cmd=commit | fossil commit]" command.
  *  Add the "clean" and "extra" subcommands to the
     "[/help?cmd=all | fossil all]" command
  *  Add the --whatif option to "[/help?cmd=clean|fossil clean]" that works the
     same as "--dry-run",
     so that the name does not collide with the --dry-run option of "fossil all".
  *  Provide a configuration option to show dates on the web timeline
     as "YYMMMDD HH:MM"
  *  Add an option to the "stats" webpage that allows an administrator to see
     the current repository schema.
  *  Enhancements to the "[/help?cmd=/vdiff|/vdiff]" webpage for more difference
     display options.
  *  Added the "[/tree?ci=trunk&expand | /tree]" webpage as an alternative
     to "/dir" and make it the default way of showing file lists.
  *  Send gzipped HTTP responses to clients that support it.

<h2>Changes For Version 1.27 (2013-09-11)</h2>
  *  Enhance the [/help?cmd=changes | fossil changes],
     [/help?cmd=clean | fossil clean], [/help?cmd=extras | fossil extras],
     [/help?cmd=ls | fossil ls] and [/help?cmd=status | fossil status] commands
     to restrict operation to files and directories named on the command-line.
  *  New --integrate option to [/help?cmd=merge | fossil merge], which
     automatically closes the merged branch when committing.
  *  Renamed <tt>/stats_report</tt> page to [/reports]. Graph width is now
     relative, not absolute.
  *  Added <tt>yw=YYYY-WW</tt> (year-week) filter to timeline to limit the results
     to a specific year and calendar week number, e.g. [/timeline?yw=2013-01].
  *  Updates to SQLite to prevent opening a repository file using file descriptors
     1 or 2 on Unix.  This fixes a bug under which an assertion failure could
     overwrite part of a repository database file, corrupting it.
  *  Added support for unlimited line lengths in side-by-side diffs.
  *  New --close option to [/help?cmd=commit | fossil commit], which
     immediately closes the branch being committed.
  *  Added <tt>chart</tt> option to [/help?cmd=bisect | fossil bisect].
  *  Improvements to the "human or bot?" determination.
  *  Reports errors about missing CGI-standard environment variables for HTTP
     servers which do not support them.
  *  Minor improvements to sync support on Windows.
  *  Added <tt>--scgi</tt> option to [/help?cmd=server | fossil server].
  *  Internal improvements to the sync process.
  *  The internals of the JSON API are now MIT-licensed, so downstream
     users/packagers are no longer affected by the "do no evil" license
     clause.

<h2>Changes For Version 1.26 (2013-06-18)</h2>
  *  The argument to the --port option for the [/help?cmd=ui | fossil ui] and
     [/help?cmd=server | fossil server] commands can take an IP address in addition
     to the port number, causing Fossil to bind to just that one IP address.
  *  After prompting for a password, also ask if that password should be
     remembered.
  *  Performance improvements to the diff engine.
  *  Fix the side-by-side diff engine to work better with multi-byte Unicode text.
  *  Color-coding in the web-based annotation (blame) display.  Fix the annotation
     engine so that it is no longer confused by time-warps.
  *  The markdown formatter is now available by default and can be used for
     tickets, wiki, and embedded documentation.
  *  Add subcommands "fossil bisect log" and "fossil bisect status" to the
     [/help?cmd=bisect | fossil bisect] command, as well as other bisect enhancements.
  *  Enhanced defenses that prevent spiders from using excessive CPU and bandwidth.
  *  Consistent use of the -n or --dry-run command line options.
  *  Win32: Fossil now understands Cygwin paths containing one or more of
     the characters <nowiki>"*:<>?|</nowiki>. Those are normally forbidden in
     win32. This means that the win32 fossil.exe is better usable in a Cygwin
     environment. See
     [http://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-specialchars].
  *  Cygwin: Fossil now understands win32 absolute paths starting with a drive
     letter everywhere. The default value of the "case-sensitive" setting is
     now FALSE, except when case-sensitivity is enabled in the Windows kernel.
     See
     [http://cygwin.com/cygwin-ug-net/using-specialnames.html#pathnames-casesensitive]
  *  Enhancements to /timeline.rss, adding more flags for filtering
     results, including the ability to subscribe to changes made
     to individual tickets. For example: [/timeline.rss?y=t&tkt=12fceeec82].
  *  Improved handling of the differences between case-sensitive and
     case-insensitive filesystems.
  *  JSON API: added the 'status' command to report local checkout status.
  *  Fixes to the <tt>--args</tt> support and documented this feature in the help.
  *  Added [/stats_report] page.
  *  Added <tt>ym=YYYY-MM</tt> filter to the [/timeline?ym=2013-06].
  *  Fixed: <tt>config reset</tt> now re-installs default ticket report format.
  *  <tt>ssh://</tt> and <tt>file://</tt> protocols now ignore proxy settings.
  *  Added [/hash-color-test] web page.
  *  Cherry-pick merges are recorded internally (though no yet displayed on the
     timeline graph.)
  *  Bring in the latest versions of SQLite, zlib, and autosetup from upstream.

<h2>Changes For Version 1.25 (2013-02-16)</h2>
  *  Enhancements to ticket processing. There are now two tables: TICKET and
     TICKETCHNG. There is one row in TICKETCHNG for each ticket artifact.
     Fields from ticket artifacts go into either or both of TICKET and
     TICKETCHNG, whichever contain matching column names. Default ticket
     edit and viewing scripts are updated to use TICKETCHNG. The TH1
     scripting language is enhanced to support this, including the new
     "query" command for doing SQL queries against the repository database.
     All changes should be backwards compatible.
  *  Add the ability to moderate ticket and wiki changes.  Unmoderated changes
     do not sync and may be deleted by the moderator if found to contain spam
     or other objectionable content.
  *  Add javascript so that clicking on a node of the timeline graph selects
     that node.  Then clicking on a second node shows a diff between the
     two nodes.  Clicking on the selected node unselects it.
  *  Warn of unresolved merge conflicts in "fossil status" and disallow
     commits of unresolved conflicts unless the --allow-conflict option
     is used.
  *  Add javascript so that clicking on column headers in a ticket report
     sorts by the indicated column.
  *  Add the "fossil cat" command which is basically an alias for
     "fossil finfo -p".
  *  Hyperlinks with the class "button" are rendered as submenu buttons
     on embedded documentation.
  *  The check-in comment editor on Windows now defaults to NotePad.exe.
  *  Correctly deal with BOMs in check-in comments.  Also attempt to convert
     check-in comments to UTF8 from other encodings.
  *  Allow the deletion of multiple stash entries using multiple arguments
     to the "fossil stash rm" command.
  *  Enhance the "fossil server DIRECTORY" command to serve static content
     files contained in DIRECTORY.  For security, only files with a
     recognized suffix (such as *.html, *.jpg, *.txt, etc) will be delivered
     as static content, and *.fossil files are not on the list of recognized
     suffixes.  There are additional restrictions on the names of the files.
  *  Allow the "fossil ui" command to specify a directory as long as the
     the --notfound option is used.
  *  Add a configuration option that causes timeline messages to be rendered
     as text/x-fossil-plain (which is the same as text/plain except that
     hyperlinks inside of <nowiki>[...]</nowiki> are decorated.)
  *  Only decorate <nowiki>[...]</nowiki> in check-in comments and tickets
     if the contented text really is a valid hyperlink target.
  *  Improvements to the side-by-side diff algorithm, for a more
     human-friendly display in some complex cases.
  *  Added <nowiki>[utime] and [stime]</nowiki> commands to TH1.  These
     commands can be used for things such as displaying the page rendering
     time in the footer.
  *  Add the ability to pass command-line options of "fossil rebuild" to
     "fossil all rebuild".
  *  Add the --deanalyze option to "fossil rebuild" (and "fossil all rebuild")
  *  Do not run the graphical merging tool nor leave merge-droppings after a
     dry-run merge.  Display an improved merge-summary message at the end of
     the merge.
  *  Add options to "fossil commit" to override the various sanity checks.
     Options added: --allow-empty, --allow-fork, --allow-older, and
     --allow-conflict.
  *  Optionally require a CAPTCHA (controlled by a setting on the
     Admin/Access webpage) when a user who is not logged in tries to
     edit wiki, or a ticket, or an attachment.
  *  Improvements to the "ssh://" sync protocol, to help it move past
     noisy motd comments.
  *  Add the uf=FILE-SHA1-HASH query parameter to the timeline, causing the
     timeline to show only check-ins that contain the specific file identified
     by FILE-SHA1-HASH.  ("uf" stands for "uses file".)
  *  Enhance the file change annotator so that it follows the file across
     name changes.
  *  Fix the server-side of the sync protocol so that it will not generate
     a delta loop when a file changes from its original state, through two
     or more intermediate states, and back to the original state, all within
     a single sync.
  *  Show much less output during a sync operation, unless the --verbose
     option is used.
  *  Set the action= attribute of &lt;form&gt; elements using javascript,
     as an addition defense against spam-bots.
  *  Disallow invalid UTF8 characters (such as characters in the surrogate
     pair range) in filenames.
  *  Judge the UserAgent strings issued by the NetSurf webbrowser to be
     coming from a human, not from a bot.
  *  Add the zlib sources to the Fossil source tree (under compat/zlib) and
     use those sources when compiling on (Windows) systems that do not have
     a zlib library installed by default.
  *  Prompt the user with the option to convert non-UTF8 files into UTF8
     when committing.
  *  Allow the characters <nowiki>*[]?</nowiki> in filenames.
  *  Allow the --context option on diff commands to have a value of 0.
  *  Added the "dbstat" command.
  *  Enhanced "fossil merge" so that if the VERSION argument is omitted, Fossil
     tries to merge any forks of the current branch.
  *  Improved detection of forks in a commit race.
  *  Added the --analyze option to "fossil rebuild".

<h2>Changes For Version 1.24 (2012-10-22)</h2>
  *  Added support for WYSIWYG editing of wiki pages. WYSIWYG is turned off
     by default and can be turned on by setting a configuration option.
  *  Allow style= attribute to occur in HTML markup on wiki pages.
  *  Added the --tk option to the "fossil diff" and "fossil stash diff"
     commands, causing color-coded diff output to be displayed in a Tcl/Tk
     GUI window.  This option only works if Tcl/Tk is installed on the
     host.
  *  On Windows, make the "gdiff" command default to use WinDiff.exe.
  *  Update the "fossil stash" command so that it always prompts for a
     comment if the -m option is omitted.
  *  Enhance the timeline webpages so that a=, b=, c=, d=, p=, and dp=
     query parameters (and others) can all accept any valid check-in name
     (such as branch names or labels) instead of just SHA1 hashes.
  *  Added the "fossil stash show" command.
  *  Added the "fileage" webpage with links to this page from the check-in
     information page and from the file browser.
  *  Added --age and -t options to the "fossil ls" command.
  *  Added the --setmtime option to "fossil update".  When used, the mtime
     of all managed files is set to the time when the most recent version of
     the file was checked in.
  *  Changed the "vdiff" webpage to show the complete text of files that
     were added or removed (the equivalent of using the -N or --newfile
     options with the "fossil diff" command-line.)
  *  Added the --temp option to "fossil clean" and "fossil extra", causing
     those commands to only look at temporary files generated by Fossil,
     such as merge-conflict reports or aborted check-in messages.
  *  Enhance the raw page download so that it can guess the mimetype of
     attachments based on the filename.
  *  Change the behavior of the from= and to= query parameters on the
     timeline page so that by default the path between the two specified
     check-ins avoids merges.
  *  Add the --baseurl option to "fossil server" and "fossil http" commands,
     so that those commands can be used with reverse proxies.
  *  If unable to determine the command-line user, do not guess.  Instead
     issue an error message.  This helps prevent check-ins from accidentally
     occurring under the wrong username.
  *  Include branch information in the output of file change listings
     (the "finfo" webpage).
  *  Make the simplified view of file history, rather than the full view,
     the default.
  *  In the "fossil configuration" command, allow the "css" option for
     synchronizing, importing, or exporting just the CSS file.  This makes
     it easier to share CSS files across repositories by exporting from
     one and importing to another.
  *  Add the (unsupported) "fossil test-orphans" command.
  *  Add the --template option to the "fossil init" command, to facilitate
     creating new repositories based on a template repository.
  *  Add the diff-binary setting, which if enabled causes binary files to
     be passed to the "gdiff" command for it to deal with, rather than simply
     printing a "cannot diff binary files" error.
  *  Add the --unified option to the "fossil diff" command to force a unified
     diff even if the --tk option (which normally implies a side-by-side diff)
     is used.
  *  Present a choice of nearby branches and versions to diff against on the
     check-in information page.
  *  Add the --force option to the "fossil merge" command that will force the
     merge to occur even if it would be a no-op.  This is sometimes useful for
     documentation purposes.
  *  Add another built-in skin:  "Enhanced Default".  Other minor tweaks to
     the existing skins.
  *  Add the "urllist" webpage, showing a list of URLs by which a server
     instance of Fossil has been accessed.  Requires "Administrator" privileges.
     A link is on the "Setup" main page.
  *  Enable dynamic loading of the Tcl runtime for installations that want
     to use Tcl as part of their configuration.  This reduces the size of
     the Fossil binary and allows any version of Tcl 8.4 or later to be used.
  *  Merge the latest SQLite changes from upstream.
  *  Lots of minor bug fixes.

<h2>Changes For Version 1.23 (2012-08-08)</h2>
  *  The default checkout database name is now ".fslckout" instead of
     "_FOSSIL_" on Unix.  Both names continue to work.
  *  Added the "fossil all changes" command
  *  Added the --ckout option to the "fossil all list" command
  *  Added the "public-pages" glob pattern that can be configured to allow
     anonymous users to see embedded documentation on sites where source
     code should not be accessible to anonymous users.
  *  Allow multiple --tag options on the same "fossil commit" command.
  *  Change the meaning of the --bgcolor option for "fossil commit" to only
     change the color for that one commit.  The new --branchcolor option
     is available to set a persistent background color.
  *  Add the branch= query parameter to the vdiff page and the --branch option
     to the "fossil diff" command.
  *  Check-in names of the form "root:BRANCH" now refer to the origin of
     the branch.  Hence to see all changes in a branch, use
     "fossil diff --from root:BRANCH --to BRANCH".  The --branch option on
     the diff command is an alias for the same.
  *  Add the ability to configure ad-units to be displayed between the menu
     bar and the content.
  *  Add the ability to set a background image as part of server configuration.
  *  Allow partial commits of cherrypick merges.
  *  Updates against an uncommitted merge are now a warning, not a fatal error.
  *  Prompt the user to continue if a check-in comment is unedited.
  *  Fixes to case sensitivity settings with the /dir webpage.
  *  Repositories now try to remember the locations of all checkouts and
     web-access URLs and display this information with the
     "fossil info $REPO" command.
  *  Improved defense against spiders:  The src= attribute of
     &lt;a&gt; elements is set using javascript after the page loads.
  *  Enhanced formatting of the user list page.
  *  If a file named in "fossil add" is missing, that is now a warning instead
     of a fatal error.
  *  Fix side-by-side diff so that it displays correctly with
     multi-byte UTF8 characters.
  *  Performance improvements in the diff logic.
  *  Other performance tweaks and documentation updates.

<h2>Changes For Version 1.22 (2012-03-17)</h2>
  *  Greatly improved "diff" processing including the new --brief option,
     partial line matching, colorized in-line diffs, and better performance.
  *  Promote "allow-symlinks" to a versionable setting
  *  Harden the CGI processing logic against DOS attacks
  *  Add the ability to run TH1 scripts after sync requests
  *  Store the repository name in _FOSSIL_ as it is type in the "open" command,
     possibly as a relative pathname.
  *  Make ".fslckout" the alternative name for the "_FOSSIL_" file.
  *  Change the "ssh:" transfer method to allow all access regardless of
     user permission.
  *  Improvements to the timeline messages associated with tag changes.
     (Requires a "[/help/rebuild | fossil rebuild]" to take effect.)
  *  Various additions and fixes for the JSON API.
  *  Improved merge-with-rename handling.
  *  --cherrypick merges use their origin's commit message by default.
  *  Added support for multiple concurrent logins per user.
  *  Update to use SQLite version 3.7.11.
  *  Various minor bug fixes.

<h2>Changes For Version 1.21 (2011-12-13)</h2>
  *  Added side-by-side diffs in the command-line interface
  *  Automatically enable hyperlinks if the UserAgent string in the
     HTTP header suggests that the requestor is a human and not a bot.
  *  Show only commonly used commands with "fossil help".  Use
     "fossil help --all" to see the complete list now.
  *  Improvements to the "stash" command:  (1) Stash all files, not just
     those below the working directory. (2) Add the --detail option to
     "list". (3) Confirm before "drop --all". (4) Add the "help"
     subcommand.
  *  Add an Admin/Access setting to change the number of octets of the
     IP address that are saved in login cookies - allowing this setting
     to be changed to zero
  *  Promote the "test-md5sum" command to "md5sum".
  *  Added the "whatis" command.
  *  Stop showing the server-code in status outputs - it is no longer used
     for anything.
  *  Added a compile-time option (--with-tcl) to build in full Tcl scripting
     support via integration with TH1.
  *  Merged the JSON branch into trunk.  Disabled by default.  Enabled
     by a compile-time option.  Probably it will be enabled by default
     in some future release.
  *  Update to use SQLite version 3.7.9 plus the alignment fix for Sparc.
     align

<h2>Changes For Version 1.20 (2011-10-21)</h2>
  *  Added side-by-side diffs in HTML interface. [0bde74ea1e]
  *  Added support for symlinks. (Controlled by "allow-symlinks" setting,
     off by default). [e4f1c1fe95]
  *  Fixed CLI annotate to show the proper file version in case there
     are multiple equal versions in history. [e161670939]
  *  Timeline now shows tag changes (requires rebuild).[87540ed6e6]
  *  Fixed annotate to show "more relevant" versions of lines in
     some cases. [e161670939]
  *  New command: ticket history. [98a855c508]
  *  Disabled SSLv2 in HTTPS client.[ea1d369d23]
  *  Fixed constant prompting regarding previously-saved SSL
     certificates. [636804745b]
  *  Other SSL improvements.
  *  Added -R REPOFILE support to several more CLI commands. [e080560378]
  *  Generated tarballs now have constant timestamps, so they are
     always identical for any given check-in. [e080560378]
  *  A number of minor HTML-related tweaks and fixes.
  *  Added --args FILENAME global CLI argument to import arbitrary
     CLI arguments from a file (e.g. long file lists). [e080560378]
  *  Fixed significant memory leak in annotation of files with long
     histories.[9929bab702]
  *  Added warnings when a merge operation overwrites local copies
     (UNDO is available, but previously this condition normally went
     silently unnoticed). [39f979b08c]
  *  Improved performance when adding many files. [a369dc7721]
  *  Improve merges which contain many file renames. [0b93b0f958]
  *  Added protection against timing attacks. [d4a341b49d]
  *  Firefox now remembers filled fields when returning to forms. [3fac77d7b0]
  *  Added the --stats option to the rebuild command. [f25e5e53c4]
  *  RSS feed now passes validation. [ce354d0a9f]
  *  Show overridden user when entering commit comment. [ce354d0a9f]
  *  Made rebuilding from web interface silent. [ce354d0a9f]
  *  Now works on MSVC with repos >2GB. [6092935ff2]
  *  A number of code cleanups to resolve warnings from various compilers.
  *  Update the built-in SQLite to version 3.7.9 beta.

<h2>Changes For Version 1.19 (2011-09-02)</h2>
  *  Added a ./configure script based on autosetup.
  *  Added the "[/help/winsrv | fossil winsrv]" command
     for creating a Fossil service on Windows systems.
  *  Added "versionable settings" where settings that affect
     the local tree can be stored in versioned files in the
     .fossil-settings directory.
  *  Background colors for branches are chosen automatically if no
     color is specified by the user.
  *  The status, changes and extras commands now show
     pathnames relative to the current working directory,
     unless overridden by command line options or the
     "relative-paths" setting.<br><b>WARNING:</b> This
     change will break scripts which rely on the current
     output when the current working directory is not the
     repository root.
  *  Added "empty-dirs" versionable setting.
  *  Added support for client-side SSL certificates with "ssl-identity"
     setting and --ssl-identity option.
  *  Added "ssl-ca-location" setting to specify trusted root
     SSL certificates.
  *  Added the --case-sensitive BOOLEAN command-line option to many commands.
     Default to true for Unix and false for Windows.
  *  Added the "Color-Test" submenu button on the branch list web page.
  *  Compatibility improvements to the git-export feature.
  *  Performance improvements on SHA1 checksums
  *  Update to the latest SQLite version 3.7.8 alpha.
  *  Fix the tarball generator to work with very log pathnames

<h2>Changes For Version 1.18 (2011-07-14)</h2>
  *  Added this Change Log
  *  Added sequential version numbering
  *  Added an optional configure script - the Makefile still works for most
     systems.
  *  Improvements to the "annotate" algorithm: only search primary
     ancestors and ignore branches.
  *  Update the "scrub" command to remove traces of login-groups and
     subrepositories.
  *  Added the --type option to the "fossil tag find" command.
  *  In contexts where only a check-in makes sense, resolve branch and
     tag names to checkins only, never events or other artifacts.
  *  Improved display of file renames on a diff.  A rebuild is required
     to take full advantage of this change.
  *  Update the built-in SQLite to version 3.7.7.
Added www/chat.md.




















































































































































































































































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# Fossil Chat

## Introduction

Fossil’s developer chatroom feature provides an
ephemeral discussion venue for insiders.  Design goals include:

  *  **Simple but functional** &rarr;
     Fossil chat is designed to provide a convenient real-time
     communication mechanism for geographically dispersed developers.
     Fossil chat is *not* intended as a replacement or competitor for
     IRC, Slack, Discord, Telegram, Google Hangouts, etc.

  *  **Low administration** &rarr;
     You can activate the chatroom in seconds without having to
     mess with configuration files or install new software.
     In an existing [server setup](./server/),
     simply enable the [C capability](/setup_ucap_list) for users
     whom you want to give access to the chatroom.

  *  **Ephemeral** &rarr;
     Chat messages do not sync to peer repositories, and they are
     automatically deleted after a configurable delay (default: 7 days).
     Individual messages or the entire conversation
     can be deleted at any time without impacting any other part
     of the system.

Fossil chat is designed for use by insiders - people with check-in
privileges or higher.  It is not intended as a general-purpose gathering
place for random passers-by on the internet. 
Fossil chat seeks to provide a communication venue for discussion
that does *not* become part of the permanent record for the project.
For persistent and durable discussion, use the [Forum](./forum.wiki).
Because the conversation is intended to be ephemeral, the chat messages
are local to a single repository.  Chat content does not sync.


## Setup

A Fossil repository must be functioning as a [server](./server/) in order
for chat to work.
To activate chat, simply add the [C capability](/setup_ucap_list)
to every user who is authorized to participate.  Anyone who can read chat
can also post to chat.

Setup ("s") and Admin ("a") users always have access to chat, without needing
the "C" capability.  A common configuration is to add the "C" capability
to "Developer" so that any individual user who has the "v" capability will
also have access to chat.

There are also some settings under /Admin/Chat that control the
behavior of chat, though the default settings are reasonable so in most
cases those settings can be ignored.  The settings control things like
the amount of time that chat messages are retained before being purged
from the repository database.

## <a id="usage"></a>Usage

For users with appropriate permissions, simply browse to the
[/chat](/help?cmd=/chat) to start up a chat session.  The default
skin includes a "Chat" entry on the menu bar on wide screens for
people with chat privilege.  There is also a "Chat" option on
the [Sitemap page](/sitemap), which means that chat will appear
as an option under the hamburger menu for many [skins](./customskin.md).

Chat messages are subject to [Fossil's
full range of Markdown processing](/md_rules). Because chat messages are
stored as-is when they arrive from a client, this change applies
retroactively to messages stored by previous fossil versions.

Files may be sent via chat using the file selection element at the
bottom of the page. If the desktop environment system supports it,
files may be dragged and dropped onto that element. Files are not
automatically sent - selection of a file can be cancelled using the
Cancel button which appears only when a file is selected. When the
Send button is pressed, any pending text is submitted along with the
selected file. Image files sent this way will, by default, appear
inline in messages, but each user may toggle that via the settings
popup menu, such that images instead appear as downloadable links.
Non-image files always appear in messages as download links.

### Deletion of Messages

<div class="sidebar">Message deletion is itself a type of message, which
is why deletions count towards updates in the recent activity list.  (It
is counted for the person who performed the deletion, not the author of
the deleted comment.) That can potentially lead to odd corner cases
where a user shows up in the list but has no messages which are
currently visible because they were deleted, or an admin user who has
not posted anything but deleted a message. That is a known minor
cosmetic-only bug with a resolution of "will not fix."</div>

Any user may *locally* delete a given message by clicking on the "tab"
at the top of the message and clicking the button which appears. Such
deletions are local-only, and the messages will reappear if the page
is reloaded. The user who posted a given message, or any Admin users,
may additionally choose to globally delete a message from the chat
record, which deletes it not only from their own browser but also
propagates the removal to all connected clients the next time they
poll for new messages.

### <a id='notifications'></a>Customizing New-message Notification Sounds

By default, the list of new-message notification sounds is limited to
a few built in to the fossil binary. In addition, any
[unversioned files](./unvers.wiki) named `alert-sounds/*.{mp3,wav,ogg}`
will be included in that list. To switch sounds, tap the "settings"
button.

### <a id='connection'></a> Who's Online?

Because the chat app has to be able to work over transient CGI-based
connections, as opposed to a stable socket connection to the server,
real-time tracking of "who's online" is not feasible.
Chat offers an optional feature, toggleable in the settings,
which can list users who have posted messages in the client's current
list of loaded messages. This is not the same thing as tracking who's
online, but it gives an overview of which users have been active most
recently, noting that "lurkers" (people who post no messages) will not
show up in that list, nor does the chat infrastructure have a way to
track and present those. That list can be used to filter messages on a
specific user by tapping on that user's name, tapping a second time to
remove the filter.

### <a id="cli"></a> The `fossil chat` Command

Type [fossil chat](/help?cmd=chat) from within any open check-out
to bring up a chatroom for the project that is in that checkout.
The new chat window will attempt to connect to the default sync
target for that check-out (the server whose URL is shown by the
[fossil remote](/help?cmd=remote) command).

### <a id="robots"></a> Chat Messages From Robots

The [fossil chat send](/help?cmd=chat) can be used by project-specific
robots to send notifications to the chatroom.  For example, on the
[SQLite project](https://sqlite.org/) (for which the Fossil chatroom
feature, and indeed all of Fossil, was invented) there are long-running
fuzz servers that sometimes run across obscure problems.  Whenever this
happens, a message is sent to the SQLite developers chatroom alerting
them to the problem.

The recommended way to allow robots to send chat messages is to create
a new user on the server for each robot.  Give each such robot account
the "C" privilege only.  That means that the robot user account will be 
able to send chat messages, but not do anything else.  Then, in the
program or script that runs the robot, when it wants to send a chat
message, have it run a command like this:

~~~~
fossil chat send --remote https://robot:PASSWORD@project.org/fossil \
  --message 'MESSAGE TEXT' --file file-to-attach.txt
~~~~

Substitute the appropriate project URL, robot account
name and password, message text and file attachment, of course.

### <a id="chat-robot"></a> Chat Messages For Timeline Events

If the [chat-timeline-user setting](/help?cmd=chat-timeline-user) is not an
empty string, then any change to the repository that would normally result
in a new timeline entry is announced in the chatroom.  The announcement
appears to come from a user whose name is given by the chat-timeline-user
setting.

This mechanism is similar to [email notification](./alerts.md) except that
the notification is sent via chat instead of via email.


## Implementation Details

*You do not need to understand how Fossil chat works in order to use it.
But many developers prefer to know how their tools work.
This section is provided for the benefit of those curious developers.*

The [/chat](/help?cmd=/chat) webpage downloads a small amount of HTML
and a small amount of javascript to run the chat session.  The
javascript uses XMLHttpRequest (XHR) to download chat content, post
new content, or delete historical messages.  The following web
interfaces are used by the XHR:

  *  [/chat-poll](/help?name=/chat-poll) &rarr;
     Downloads chat content as JSON.
     Chat messages are numbered sequentially.
     The client tells the server the largest chat message it currently
     holds, and the server sends back subsequent messages.  If there
     are no subsequent messages, the /chat-poll page blocks until new
     messages are available.

  *  [/chat-send](/help?name=/chat-send) &rarr;
     Sends a new chat message to the server.

  *  [/chat-delete](/help?name=/chat-delete) &rarr;
     Deletes a chat message.

Fossil chat uses the venerable "hanging GET" or 
"[long polling](wikipedia:/wiki/Push_technology#Long_polling)"
technique to receive asynchronous notification of new messages.
This is done because long polling works well with CGI and SCGI,
which are the usual mechanisms for setting up a Fossil server.
More advanced notification techniques such as 
[Server-sent events](wikipedia:/wiki/Server-sent_events) and especially
[WebSockets](wikipedia:/wiki/WebSocket) might seem more appropriate for
a chat system, but those technologies are not compatible with CGI.

Downloading of posted files and images uses a separate, non-XHR interface:

  * [/chat-download](/help?name=/chat-download) &rarr;
    Fetches the file content associated with a post (one file per
    post, maximum). In the UI, this is accessed via links to uploaded
    files and via inlined image tags.

Chat messages are stored on the server-side in the CHAT table of
the repository.

~~~
CREATE TABLE repository.chat(
  msgid INTEGER PRIMARY KEY AUTOINCREMENT,
  mtime JULIANDAY,  -- Time for this entry - Julianday Zulu
  lmtime TEXT,      -- Client YYYY-MM-DDZHH:MM:SS when message originally sent
  xfrom TEXT,       -- Login of the sender
  xmsg  TEXT,       -- Raw, unformatted text of the message
  fname TEXT,       -- Filename of the uploaded file, or NULL
  fmime TEXT,       -- MIMEType of the upload file, or NULL
  mdel INT,         -- msgid of another message to delete
  file  BLOB        -- Text of the uploaded file, or NULL
);
~~~

The CHAT table is not cross-linked with any other tables in the repository
schema.  An administrator can "DROP TABLE chat;" at any time, without
harm (apart from deleting all chat history, of course).  The CHAT table
is dropped when running [fossil scrub --verily](/help?cmd=scrub).

On the server-side, message text is stored exactly as entered by the
users.  The /chat-poll page queries the CHAT table and constructs a
JSON reply described in the [/chat-poll
documentation](/help?cmd=/chat-poll).  The message text is translated
into HTML before being converted to JSON so that the text can be
safely added to the display using assignment to `innerHTML`. Though
`innerHTML` assignment is generally considered unsafe, it is only so
with untrusted content from untrusted sources. The chat content goes
through sanitization steps which eliminate any potential security
vulnerabilities of assigning that content to `innerHTML`.
Added www/checkin.wiki.

























































































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<title>Check-in Checklist</title>

<h2><u>Always</u> run the following checklist prior to <u>every</u>
check-in or commit to the Fossil repository:</h2>

Before every check-in:

  0.   <b>fossil user default</b> → your username is correct.

  1.   <b>fossil diff</b> →
       <ol type="a">
       <li> No stray changes
       <li> All changes comply with the license
       <li> All inputs are scrubbed before use
       <li> No injection attacks via %s formats
       </ol>

  2.   <b>fossil extra</b> → no unmanaged files need to be added.

  3.   The check-in will go onto the desired branch.
       →  Check-ins to trunk normally require approval from
       the lead programmer (drh).

  4.   auto-sync is on, or the system clock is verified

  5.   If sources files have been added or removed, ensure all makefiles
       and configure scripts have been updated accordingly.

Before every check-in to <b>trunk</b>:

  6.   No compiler warnings on the development machine.

  7.   The fossil executable that results from a build actually works.


<hr>
<h2>Commentary</h2>

Before you go ahead and push content back to the servers, make sure
that the username you are using by default matches your username
within the project. Also remember to enable the localauth setting
if you intend to make changes via a locally served web UI.

Item 1 is the most important step.  Consider using <b>gdiff</b>
instead of <b>diff</b> if you have a graphical differ configured.  Or
use the command-line option <b>--tk</b>.  Also consider the <b>-v</b>
command-line option to show the complete text of newly added files.
The recommended command for completing checklist item 1 is:

   <b>fossil diff --tk -v</b>

Look carefully at every changed line in item 1.
Make sure that you are not about to commit unrelated changes.
If there are two or more unrelated changes present, consider
breaking up the commit into two or more separate commits.
Always make 100% sure that all changes are compatible with the
BSD license, that you have the authority to commit the code in accordance
with the [/doc/trunk/www/copyright-release.html | CLA] that you have
signed and have on file, and that
no NDAs, copyrights, patents, or trademarks are infringed by the check-in.
Also check very carefully to make sure that
you are not introducing security vulnerabilities.  Pay particular attention
to the possibility of SQL or HTML injection attacks.

Item 2 verifies that you have not added source files but failed to
do the necessary "<b>fossil add</b>" to manage them.  If you commit
without bringing the new file under source control, the check-in will
be broken.  That, in turn, can cause complications far in the future
when we are bisecting for a bug.

For item 3, Run "<b>fossil status</b>" or the equivalent to
make sure your changes are going into the branch you think they are.
Also double-check the branch name when entering change comments.
Never check into trunk unless you are expressly authorized to do so.

For Item 4, if you are on-network, make sure auto-sync is enabled.  This
will minimize the risk of an unintended fork.  It will also give you a
warning if you system clock is set incorrectly.  If you are off-network,
make sure that your system clock is correct or at least close to correct
so that your check-in does not appear out-of-sequence on timelines.
On-network commits are preferred, especially for trunk commits.

Items 6 and 7 help to ensure that check-ins on the trunk always work.
Knowing that the trunk always works makes bisecting much easier.  Items
6 and 7 are recommended for all check-ins, even those that are on a branch.
But they are especially important for trunk check-ins.  We desire that
all trunk check-ins work at all times.  Any experimental, unstable, or
questionable changes should go on a branch and be merged into trunk after
further testing.
Added www/checkin_names.wiki.




























































































































































































































































































































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<title>Check-in Names</title>

<div class="sidebar no-label">
<b>Quick Reference</b>
<ul>
<li> Hash prefix
<li> Branch name
<li> Tag name
<li> Timestamp:  <i>YYYY-MM-DD HH:MM:SS</i>
<li> <i>tag-name</i> <big><b>:</b></big> <i>timestamp</i>
<li> <b>root <big>:</big></b> <i>branchname</i>
<li> <b>start <big>:</big></b> <i>branchname</i>
<li> <b>merge-in <big>:</big></b> <i>branchname</i>
<li> Special names:
<ul>
<li> <b>tip</b>
<li> <b>current</b>
<li> <b>next</b>
<li> <b>previous</b> or <b>prev</b>
<li> <b>ckout</b> (<a href='./embeddeddoc.wiki'>embedded docs</a> only)
</ul>
</ul>
</div>

Many Fossil [/help|commands] and [./webui.wiki | web interface] URLs accept
check-in names as an argument.  For example, the "[/help/info|info]" command
accepts an optional check-in name to identify the specific check-in
about which information is desired:

<pre style="white-space: pre-wrap">
fossil info <i>checkin-name</i>
</pre>

You are perhaps reading this page from the following URL:

<verbatim>
https://fossil-scm.org/home/doc/trunk/www/checkin_names.wiki
</verbatim>

This is an example of an [./embeddeddoc.wiki | embedded documentation]
page URL.  The "trunk" element of the pathname is a
[./glossary.md#check-in | check-in] name that
determines which version of the documentation to display.

Fossil provides a variety of ways to specify a check-in.  This
document describes the various methods.

<h2 id="canonical">Canonical Check-in Name</h2>

The canonical name of a check-in is the hash of its
[./fileformat.wiki#manifest | manifest] expressed as a
[./hashes.md | long lowercase hexadecimal number].  For example:

<pre>
fossil info e5a734a19a9826973e1d073b49dc2a16aa2308f9
</pre>

The full 40 or 64 character hash is unwieldy to remember and type, though,
so Fossil also accepts a unique prefix of the hash, using any combination
of upper and lower case letters, as long as the prefix is at least 4
characters long.  Hence the following commands all
accomplish the same thing as the above:

<pre>
fossil info e5a734a19a9
fossil info E5a734A
fossil info e5a7
</pre>

Fossil uses this feature itself, identifying check-ins by 8 to 16-character
prefixes of the canonical name in places where it doesn't want to chew
up the screen real estate required to display the whole hash.

<h2 id="tags">Tags And Branch Names</h2>

Using a tag or branch name where a check-in name is expected causes
Fossil to choose the most recent check-in with that tag or branch name.
So for example, the most recent check-in that
is tagged with "release" as of this writing is [b98ce23d4fc].
The command:

<pre>
fossil info release
</pre>

…results in the following output:

<pre>
hash:         b98ce23d4fc3b734cdc058ee8a67e6dad675ca13 2020-08-20 13:27:04 UTC
parent:       40feec329163103293d98dfcc2d119d1a16b227a 2020-08-20 13:01:51 UTC
tags:         release, branch-2.12, version-2.12.1
comment:      Version 2.12.1 (user: drh)
</pre>

There are multiple check-ins that are tagged with "release" but
(as of this writing) the [b98ce23d4fc]
check-in is the most recent so it is the one that is selected.

Note that unlike some other version control systems, a "branch" in Fossil
is not anything special: it is simply a sequence of check-ins that
share a common tag, so the same mechanism that resolves tag names
also resolves branch names.

<a id="tagpfx"></a>
Note also that there can — in theory, if rarely in practice — be an ambiguity
between tag names and canonical names.  Suppose, for example, you had a
check-in with the canonical name deed28aa99… and you
also happened to have tagged a different check-in with "deed2".  If
you use the "deed2" name, does it choose the canonical name or the tag
name?  In such cases, you can prefix the tag name with "tag:".
For example:

<pre>
fossil info tag:deed2
</pre>

The "tag:deed2" name will refer to the most recent check-in
tagged with "deed2" rather than the
check-in whose canonical name begins with "deed2".

<h2 id="whole-branches">Whole Branches</h2>

Usually when a branch name is specified, it means the latest check-in on
that branch, but for some commands (ex: [/help/purge|purge]) a branch name
on the argument means the earliest connected check-in on the branch.  This
seems confusing when being explained here, but it works out to be intuitive
in practice.

For example, the command "fossil purge XYZ" means to purge the check-in XYZ
and all of its descendants.  But when XYZ is in the form of a branch name, one
generally wants to purge the entire branch, not just the last check-in on the
branch.  And so for this reason, commands like purge will interpret a branch
name to be the first check-in of the branch rather than the last.  If there
are two or more branches with the same name, then these commands will select
the first check-in of the branch that has the most recent check-in.  What
happens is that Fossil searches for the most recent check-in with the given
tag, just as it always does.  But if that tag is a branch name, it then walks
back down the branch looking for the first check-in of that branch.

Again, this behavior only occurs on a few commands where it make sense.

<h2 id="timestamps">Timestamps</h2>

A timestamp in one of the formats shown below means the most recent
check-in that occurs no later than the timestamp given:

  1.   <i>YYYY-MM-DD</i>
  2.   <i>YYYY-MM-DD HH:MM</i>
  3.   <i>YYYY-MM-DD HH:MM:SS</i>
  4.   <i>YYYY-MM-DD HH:MM:SS.SSS</i>
  5.   <i>YYYYMMDD</i>
  6.   <i>YYYYMMDDHHMM</i>
  7.   <i>YYYYMMDDHHMMSS</i>

In the second through the fourth forms,
the space between the day and the year can optionally be
replaced by an uppercase <b>T</b>, and the entire timestamp can
optionally be followed by "<b>z</b>" or "<b>Z</b>".  In the fourth
form with fractional seconds, any number of digits may follow the
decimal point, though due to precision limits only the first three
digits will be significant.  The final three pure-digit forms 
without punctuation are only valid if the number they encode is
not also the prefix of an artifact hash.

In its default configuration, Fossil interprets and displays all dates
in Universal Coordinated Time (UTC).  This tends to work the best for
distributed projects where participants are scattered around the globe.
But there is an option on the Admin/Timeline page of the web interface to
switch to local time.  The "<b>Z</b>" suffix on a timestamp check-in
name is meaningless if Fossil is in the default mode of using UTC for
everything, but if Fossil has been switched to local time mode, then the
"<b>Z</b>" suffix means to interpret that particular timestamp using
UTC instead of local time.

You may prefix a timestamp with the string “date:â€, in which case
processing stops immediately, whether the string is parsed correctly and
refers to anything within the repository or not. The prefix is therefore
useful when the date could be misinterpreted as a tag. For example, a
repo could have release tags like “2020-04-01â€, the date the release was
cut, but you could force Fossil to interpret that string as a date
rather than as a tag by passing “date:2020-04-01â€.

For an example of how timestamps are useful,
consider the homepage for the Fossil website itself:

<pre>
https://fossil-scm.org/home/doc/<b>trunk</b>/www/index.wiki
</pre>

The bold component of that URL is a check-in name.  To see the stored content
of the Fossil website repository as of January 1, 2009, one has merely to change
the URL to the following:

<pre>
https://fossil-scm.org/home/doc/<b>2009-01-01</b>/www/index.wiki
</pre>

(Note that this won't roll you back to the <i>skin</i> and other
cosmetic configurations as of that date. It also won't change screens
like the timeline, which has an independent date selector.)

<h2 id="tag-ts">Tag And Timestamp</h2>

A check-in name can also take the form of a tag or branch name followed by
a colon and then a timestamp.  The combination means to take the most
recent check-in with the given tag or branch which is not more recent than
the timestamp.  So, for example:

<pre>
fossil update trunk:2010-07-01T14:30
</pre>

Would cause Fossil to update the working check-out to be the most recent
check-in on the trunk that is not more recent than 14:30 (UTC) on
July 1, 2010.

<h2 id="root">Root Of A Branch</h2>

A branch name that begins with the "<tt>root:</tt>" prefix refers to the
last check-in on the parent branch prior to the beginning of the branch.
Such a label is useful, for example, in computing all diffs for a single
branch.  The following example will show all changes in the hypothetical
branch "xyzzy":

<pre>
fossil diff --from root:xyzzy --to xyzzy
</pre>

<a id="merge-in"></a>
That doesn't do what you might expect after you merge the parent
branch's changes into the child branch: the above command will include
changes made on the parent branch as well.

You can solve this by using the prefix "<tt>merge-in:</tt>" instead of
"<tt>root:</tt>" to tell Fossil to find
the most recent merge-in point for that branch.
The resulting diff will then show only the changes in
the branch itself, omitting
any changes that have already been merged in from the parent branch.

<a id="start"></a>
The prefix "<tt>start:</tt>" gives the first check-in of the named branch.

The prefixes "<tt>root:</tt>", "<tt>start:</tt>", and  "<tt>merge-in:</tt>"
can be chained: one can say for example 

<pre>
fossil info merge-in:xyzzy:2022-03-01
</pre>

to get information about the most recent merge-in point on the branch 
"xyzzy" that happened on or before March 1, 2022.

<h2 id="special">Special Tags</h2>

The tag "tip" means the most recent check-in.  The "tip" tag is practically
equivalent to the timestamp "9999-12-31".

This special name works anywhere you can pass a "NAME", such as with
<tt>/info</tt> URLs:

<pre>
http://localhost:8080/info/tip
</pre>

There are several other special names, but they only work from within a
check-out directory because they are relative to the current checked-out
version:

  *  "current": the current checked-out version
  *  "next": the youngest child of the current checked-out version
  *  "previous" or "prev": the primary (non-merge) parent of "current"

Therefore, you can use these names in a <tt>fossil info</tt> command,
but not in an <tt>/info</tt> URL, for example.

For embedded documentation URLs only, there is one more special name,
"ckout". See [./embeddeddoc.wiki#ckout | its coverage elsewhere] for
more details. You cannot currently use "ckout" anywhere other than in
<tt>/doc</tt> URLs.


<h2 id="examples">Additional Examples</h2>

To view the changes in the most recent check-in prior to the version currently
checked out:

<pre>
fossil diff --from previous --to current
</pre>

Suppose you are of the habit of tagging each release with a "release" tag.
Then to see everything that has changed on the trunk since the last release:

<pre>
fossil diff --from release --to trunk
</pre>


<h2 id="order">Resolution Order</h2>

Fossil currently resolves name strings to artifact hashes in the
following order:

  #  Exact matches on [#special | the special names]
  #  [#timestamps | Timestamps], with preference to ISO8601 forms
  #  [#tagpfx | tag:TAGNAME]
  #  [#root | root:BRANCH]
  #  [#start | start:BRANCH]
  #  [#merge-in | merge-in:BRANCH]
  #  [#tag-ts | TAGNAME:timestamp]
  #  Full artifact hash or hash prefix.
  #  Any other type of symbolic name that Fossil extracts from
     artifacts.

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
Added www/childprojects.wiki.

























































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<title>Child Projects</title>

<h2>Background</h2>

The default behavior of Fossil is to share everything (all check-ins,
tickets, wiki, etc) between all clients and all servers.  Such a policy
helps to promote a cohesive design for a cathedral-style project run
by a small cliche of developers - the sort of project for which Fossil
was designed.

But sometimes it is desirable to branch off a side project that does not
sync back to the master but does continue to track changes in the master.
For example, the master project might be an open-source project like
[https://www.sqlite.org/|SQLite] and a team might want to do a proprietary
closed-source enhancement to that master project in a separate repository.
All changes in the master project should flow forward into the derived
project, but care must be taken to prevent proprietary content from the
derived project from leaking back into the master.

<h2>Child Projects</h2>

A scenario such as the above can be accomplished in Fossil by creating
a child project.  The child project is able to freely pull from the parent,
but the parent cannot push or pull from the child nor is the child able to
push to the parent.  Content flows from parent to child only, and then only
at the request of the child.

<h2>Creating a Child Project</h2>

To create a new child project, first clone the parent.  Then make manual
SQL changes to the child repository as follows:

<verbatim>
UPDATE config SET name='parent-project-code' WHERE name='project-code';
UPDATE config SET name='parent-project-name' WHERE name='project-name';
INSERT INTO config(name,value)
   VALUES('project-code',lower(hex(randomblob(20))));
INSERT INTO config(name,value)
   VALUES('project-name','CHILD-PROJECT-NAME');
</verbatim>

Modify the CHILD-PROJECT-NAME in the last statement to be the name of
the child project, of course.

The repository is now a separate project, independent from its parent.
Clone the new project to the developers as needed.

The child project and the parent project will not normally be able to sync
with one another, since they are now separate projects with distinct
project codes.  However, if the
"--from-parent-project" command-line option is provided to the
"[/help?cmd=pull|fossil pull]" command in the child, and the URL of
parent repository is also provided on the command-line, then updates to
the parent project that occurred after the child was created will be added
to the child repository.  Thus, by periodically doing a
pull --from-parent-project, the child project is able to stay up to date
with all the latest changes in the parent.
Added www/chroot.md.










































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# The Server Chroot Jail

If you run Fossil as root in any mode that [serves data on the
network][srv], and you're running it on Unix or a compatible OS, Fossil
will drop itself into a [`chroot(2)` jail][cj] shortly after starting
up, once it's done everything that requires root access. Most commonly,
you run Fossil as root to allow it to bind to TCP port 80 for HTTP
service, since normal users are restricted to ports 1024 and up on OSes
where this behavior occurs.

Fossil uses the owner of the Fossil repository file as its new user
ID when dropping root privileges.

When this happens, Fossil needs to have all of its dependencies inside
the chroot jail in order to continue work.  There are several things you
typically need in order to make things work properly:

*   the repository file(s)

*   `/dev/null` — create it with `mknod(8)` inside the jail directory
    ([Linux example][mnl], [OpenBSD example][obsd])

*   `/dev/urandom` — ditto

*   `/proc` — you might need to mount this virtual filesystem inside the
    jail on Linux systems that make use of [Fossil’s server load
    shedding feature][fls]

*   any shared libraries your `fossil` binary is linked to, unless you
    [configured Fossil with `--static`][bld] to avoid it

Fossil does all of this in order to protect the host OS. You can make it
bypass the jail part of this by passing <tt>--nojail</tt> to <tt>fossil server</tt>,
but you cannot make it skip the dropping of root privileges, on purpose.


[bld]: https://fossil-scm.org/home/doc/trunk/www/build.wiki
[cj]:  https://en.wikipedia.org/wiki/Chroot
[fls]: ./loadmgmt.md
[mnl]: https://fossil-scm.org/forum/forumpost/90caff30cb
[srv]: ./server/
[obsd]: ./server/openbsd/fastcgi.md#chroot
Added www/ckout-workflows.md.














































































































































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# Check-Out Workflows

Because Fossil separates the concept of “check-out directory†from
“repository DB file,†it gives you the freedom to choose from several
working styles. Contrast Git, where the two concepts are normally
intermingled in a single working directory, which strongly encourages
the “update in place†working style.


## <a id="mcw"></a> Multiple-Checkout Workflow

With Fossil, it is routine to have multiple check-outs from the same
repository:

    fossil clone https://example.com/repo /path/to/repo.fossil

    mkdir -p ~/src/my-project/trunk
    cd ~/src/my-project/trunk
    fossil open /path/to/repo.fossil    # implicitly opens “trunkâ€

    mkdir ../release
    cd ../release
    fossil open /path/to/repo.fossil release

    mkdir ../my-other-branch
    cd ../my-other-branch
    fossil open /path/to/repo.fossil my-other-branch

    mkdir ../scratch
    cd ../scratch
    fossil open /path/to/repo.fossil abcd1234

    mkdir ../test
    cd ../test
    fossil open /path/to/repo.fossil 2019-04-01

Now you have five separate check-out directories: one each for:

*   trunk
*   the latest tagged public release
*   an alternate branch you’re working on
*   a “scratch†directory for experiments you don’t want to do in the
    other check-out directories; and
*   a “test†directory where you’re currently running a long-running
    test to evaluate a user bug report against the version as of last
    April Fool’s Day.

Each check-out operates independently of the others.

This multiple-checkouts working style is especially useful when Fossil stores source code in programming languages
where there is a “build†step that transforms source files into files
you actually run or distribute. Contrast a switch-in-place workflow,
where you have to rebuild all outputs from the source files
that differ between those versions whenever you switch versions. In the above model,
you switch versions with a “`cd`†command instead, so that you only have
to rebuild outputs from files you yourself change.

This style is also useful when a check-out directory may be tied up with
some long-running process, as with the “test†example above, where you
might need to run an hours-long brute-force replication script to tickle
a [Heisenbug][hb], forcing it to show itself. While that runs, you can
open a new terminal tab, “`cd ../trunk`â€, and get back
to work.

[hb]:     https://en.wikipedia.org/wiki/Heisenbug



## <a id="scw"></a> Single-Checkout Workflows

Nevertheless, it is possible to work in a more typical Git sort of
style, switching between versions in a single check-out directory.

#### <a id="idiomatic"></a> The Idiomatic Fossil Way

The most idiomatic way is as follows:

    fossil clone https://example.com/repo /path/to/repo.fossil
    mkdir work-dir
    cd work-dir
    fossil open /path/to/repo.fossil
    ...work on trunk...

    fossil update my-other-branch
    ...work on your other branch in the same directory...

Basically, you replace the `cd` commands in the multiple checkouts
workflow above with `fossil up` commands.


#### <a id="open"></a> Opening a Repository by URI

You can instead open the repo’s URI directly:

    mkdir work-dir
    cd work-dir
    fossil open https://example.com/repo

Now you have “trunk†open in `work-dir`, with the repo file stored as
`repo.fossil` in that same directory.

Users of Git may be surprised that it doesn’t create a directory for you
and that you `cd` into it *before* the clone-and-open step, not after.
This is because we’re overloading the “open†command, which already had
the behavior of opening into the current working directory. Changing it
to behave like `git clone` would therefore make the behavior surprising
to Fossil users. (See [our discussions][caod] if you want the full
details.)


#### <a id="clone"></a> Git-Like Clone-and-Open

Fossil also supports a more Git-like alternative:

    fossil clone https://fossil-scm.org/fossil
    cd fossil

This results in a `fossil.fossil` repo DB file and a `fossil/` working
directory.

Note that our `clone URI` behavior does not commingle the repo and
check-out, solving our major problem with the Git design.

If you want the repo to be named something else, adjust the URL:

    fossil clone https://fossil-scm.org/fossil/fsl

That gets you `fsl.fossil` checked out into `fsl/`.

For sites where the repo isn’t served from a subdirectory like this, you
might need another form of the URL. For example, you might have your
repo served from `dev.example.com` and want it cloned as `my-project`:

    fossil clone https://dev.example.com/repo/my-project

The `/repo` addition is the key: whatever comes after is used as the
repository name. [See the docs][clone] for more details.

[caod]:  https://fossil-scm.org/forum/forumpost/3f143cec74
[clone]: /help?cmd=clone

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
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<h2>foo</h2>

The <code>foo</code> command is informational, it doesn't do anything to
a checked-out project, but it tells you something about it.

The <code>foo</code> command <<allows you | helps> to> | <ensures that> bar.

The flibenglookners that the foo command <operates on> | <displays> bar.

Typing <code>fossil foo</code> will gonkulate any flibenglookners, but baz.

What we going to exemplify.

Example.

Raison d'etre.

Compare <code>foo</code> to this here other <code>thingy</code>.

See also: [./cmd_bar.wiki | fossil bar],
[./cmd_baz.wiki | fossil baz],
[./reference.wiki | Reference]
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<h2>add</h2>

The often used <code>add</code> command is how you tell <b>fossil</b> to
include a (usually new) file in the repository.

<b>fossil</b> is designed to manage artifacts whose role is being
"source" for something, most probably software program code or other
text.  One can imagine all kinds of ways to let fossil know just what
constitutes a source; the simplest and most direct way it
<i>actually</i> finds out is when you give it the
<code> fossil add <i>path</i> </code> command.

It's reasonable to think of
the [./cmd_import.wiki | <code>import</code>]
and [./cmd_clone.wiki | <code>clone</code>]
commands as very high-powered versions of the <code>add</code>
command that are combined with system level file movement and
networking functions.  Not particularly accurate, but reasonable.

Typing <code>&nbsp;fossil add myfile</code> causes fossil to put
<i>myfile</i> into the repository at the next
<code>commit</code>&#8212;provided you issue it from within the source
tree, of course.

By contrast, <code>&nbsp;fossil add mydirectory</code> will add
<em><strong>all</strong></em> of the files in <i>mydirectory</i>, and
all of its sub-directories.  In other words, adding a directory will
recursively add all of the directory's file system descendants to the
repository.  This was an oft-requested feature, recently implemented.
It is very flexible.  Only when you add a directory do you get the
recursive behavior.  If you are globbing a subset of files, you won't
get the recursion.

Realize that the repository is <u>not</u> changed by the
<code>add</code> command, but by the <code>&nbsp;commit</code> command.
<code>add</code> <i>myfile</i> tells <b>fossil</b> to "mark"
<i>myfile</i> as part of the repository.  Only commands which actually
manipulate the content of the repository can physically put source
artifacts into (or remove them from) the repository.

Just to keep things symmetric, there are also commands that can
manipulate the repository without affecting the checked-out sources
(see [./cmd_pull.wiki | fossil pull], for instance.)

It's worthwhile reiterating that <b>fossil</b> is storing the content
of source artifacts and the names of the artifacts in their "native
habitat", a sequence of "temporal slices" (aka "versions") of the
state of the whole system, and a set of unique identifiers.  When you
add a file to a repository, the <i>path</i> to the file is a part of
the <i>name</i> of the file.  There is a mis-match between the file
system's idea of a directory (a file containing pointers to files) and
fossil's idea (a substring of the name of the artifact.)  The names of
the artifacts specify their relative locations because of the way the
file system interprets them.  If you don't keep this in mind, you may
fool yourself into thinking <b>fossil</b> somehow "stores
directories."  It doesn't, and believing it does will eventually
confuse you.

See also: [./cmd_rm.wiki | fossil rm],
[./cmd_import.wiki | fossil import],
[./cmd_clone.wiki | fossil clone],
[./cmd_commit.wiki | fossil commit],
[./cmd_pull.wiki | fossil pull],
[./cmd_settings.wiki | fossil setting] (async),
[./reference.wiki | Reference]
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<h2>all</h2>

The <code>all</code> command will let you perform (some) commands on
<em>all</em> of your repositories, and provides a way of finding all
of your repositories as well.

There are some commands you might especially want to perform on every
repository you've got, once in a while.  <code> fossil&nbsp;all
</code> includes four of the most likely as sub-commands:
[./cmd_pull.wiki | <code>pull</code>],
[./cmd_push.wiki | <code>push</code>],
[./cmd_rebuild.wiki | <code>rebuild</code>] and
[./cmd_sync.wiki | <code>sync</code>].

Follow the links to find out what each of those do, and then a moment
of thought will tell you why you might want to have them available for
all repositories.

Certainly you'll want your repositories all rebuilt when you upgrade
<b>fossil</b> after there has been a change in the repository
structure.  For the others, it depends.  Usually you would want
across-the-board versions if you've been "off Net" for a while, and
have commits to multiple repositories than you need to share, or want
to get the repository changes that have been made by others, or both.

The last sub-command provided by <code>all</code> is "<code>list</code>."

While the other sub-commands give you a way to conveniently take care
of all of your repositories for some common tasks, the
<code>list</code> provides a way to take care of any subset of your
repositories in any way you want.  It provides a list of all of your
repositories' locations.  <code>fossil&nbsp;all&nbsp;list</code>
outputs a one-per-line listing of the path for each of your
repositories.  With that in hand, you can easily script just about any
repository manipulations you want.

Or, you could just jog your memory.

The <code>all</code> command uses the <i>.fossil</i> file in the home
directory to find all of your repositories, so you can mess it up by
moving your repositories around.  This is easy to do inadvertently if
you have a cavalier attitude about repos, but you'll know pretty
quickly that you've done it&#8212;many commands you try to use from
inside of a checkout won't work correctly.  The <i>.fossil</i> file is
an <b>sqlite</b> db file which fossil uses to keeping track of
repository locations. Advice: if you move your repositories around,
let fossil know you did;
[./cmd_close.wiki | <code>close</code>] them before you move
them, and then [./cmd_open.wiki | <code>open</code>] them from
their new locations.

See also: [./cmd_pull.wiki | fossil pull],
[./cmd_push.wiki | fossil push],
[./cmd_rebuild.wiki | fossil rebuild],
[./cmd_sync.wiki | fossil sync],
[./cmd_open.wiki | fossil open],
[./cmd_close.wiki | fossil close],
[./reference.wiki | Reference],
[http://www.sqlite.org | <b>SQLite</b>]
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<h2>cgi</h2>

<code>cgi</code> is the command that tells fossil it is running as a
web-page supplier for an external http server.  (For you web-miesters,
the "cgi" is actually unnecessary if your web environment is set up in
a normal fashion.)

This is the command you will probably use if you want to make a
moderate-to-high hit rate public repository (like the <b>fossil</b>
project's self-hosted repository) but you'll be using it in the
shebang line.

If you need lower level access to the pages <b>fossil</b> generates,
you'll want to look at the [./cmd_http.wiki | <code>http</code>]
command.

See also: [./cmd_http.wiki | fossil http],
[./concepts.wiki#saserv | <i>Concepts (setting up a server)</i>],
[./reference.wiki | Reference]
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<h2>changes</h2>

The <code>changes</code> command is informational, it doesn't do
anything to a checked-out project, but it tells you something about
it.

This is simply a quick way to get a list of the files which are
different in the source tree (the checkout) and the repository.

There is a bit more information (was a file edited, added or
removed?, for instance).

The same information will be displayed if you
[./cmd_status.wiki | <code>&nbsp;fossil&nbsp;status&nbsp;</code>],
except there will be some additional repository information displayed
first.

See also: [./cmd_status.wiki | fossil status],
[./reference.wiki | Reference]
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<h2>checkout</h2>

The <code>checkout</code> command is how a project version goes from
the repository to the chosen project directory.

Without going into detail about getting/opening a repository, once you
have a repository and a place in which the repository has been
opened, you can "check out" a "version" of the files which make up the
repository at somewhen.

The term "checkout" is traditional in source management systems, but a
bit of an anachronism in a distributed system like <b>fossil</b>.
"Checking out" a version of a project means getting all of the source
artifacts out into the standard environment---currently the
shell/file-system.

Traditionally, the version is some "incrementing" code like
v1.3.2rcQuink or f451 or something.  In distributed SCM systems it's
some absolutely unique identifier, usually the result of a one-way
hash (SHA1, in fossil's case.)  The <b>fossil</b> term for these is
<em>artifact IDs</em>.

<code>fossil&nbsp;checkout&nbsp;</code> <i>id</i> will check out the
version corresponding to <i>id</i> into the source tree.

<code>checkout</code> requires you to pick a precise version to put into
the "on-disk" source tree, and leaves any edited files which are already
in the tree intact.

<code>update</code>, on the other hand, <em>merges</em> edits into the
version you choose (if you choose one; you can default the version.)

Since a version is required, and <b>fossil</b>'s artifact IDs are
fairly long, there are two good ways to refer to the version.  You can
use a unique proper prefix of the version (six or eight characters is
more than enough in most cases) <em>or</em> you can [./cmd_tag.wiki |
tag] your check-ins and use the tags for checkouts, reverting,
branching (tags are the best way to branch) and so forth.  Both
methods work throughout fossil.

See also [./cmd_tag.wiki | fossil tag],
[./cmd_revert.wiki | fossil revert],
[./cmd_update.wiki | fossil update],
[./cmd_push.wiki | fossil push],
[./cmd_pull.wiki | fossil pull],
[./cmd_clone.wiki | fossil clone],
[./cmd_open.wiki | fossil open],
[./cmd_close.wiki | fossil close],
[./cmd_new.wiki | fossil new],
[./reference.wiki | Reference]
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<h2>extra</h2>

The <code>extra</code> command is informational, it doesn't do anything to
a checked-out project, but it tells you something about it.

Extra files are files that exist in a checked-out project, but don't belong to
the repository.

The <code>fossil extra</code> command will get you a list of these files.

This is convenient for figuring out if you've <code>
[./cmd_add.wiki | add]</code>ed every file that needs to be

in the repository before you do a commit.  It will also tell you what
will be removed if you [./cmd_clean.wiki | <code>clean</code>]
the project.

Suppose, for example, you have a "noodle.src" file as a scratch pad
for source code, and you don't want to include your latest
hare-brained ideas in the repository?  You don't <code>add</code> it
to the repository, of course&#8212;though there are ways you might add
it unintentionally.  If your project is big, and you want to find
noodle.src, and anything else that isn't under source control within
the project directories, then<code> fossil&nbsp;extra </code> will
give you a list.

If you don't think this is all that useful, then you've never had to write
a shell script that only affects project files and leaves everything
else alone.  ;)

The <code>extra</code> command is almost, but not quite entirely, the exact
opposite of the [./cmd_ls.wiki | <code>ls</code>] command.

See also: [./cmd_status.wiki | fossil status],
[./cmd_ls.wiki | fossil ls],
[./cmd_changes.wiki | fossil changes],
[./cmd_clean.wiki | fossil clean],
[./reference.wiki | Reference]
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<h2>ls</h2>

The <code>ls</code><a href="#notes">*</a> command is informational, it doesn't do anything to
a checked-out project, but it tells you something about it.

A project consists of a "source tree" of "artifacts" (see [./concepts.wiki | Fossil concepts].)
From a practical standpoint this is a set of files and directories rooted
at a main project directory.  The files that are under source control aren't
particularly distinguishable from those that aren't.  The <code>ls</code> and
<code>extra</code> commands provide this information.

<code>fossil ls</code> produces a listing of the files which are under source
control <i>and</i> their status within the repository.  The output is a simple
list of STATUS/filepath pairs on separate lines.  The status of a file will
likely be one of ADDED, UNCHANGED, UPDATED, or DELETED. <a href="#notes">*</a>

It's important to realize that this is the status <i>relative to the repository</i>,
it's the status as <b>fossil</b> sees it and has nothing to do with
filesystem status.  If you're new to source-management/version-control
systems, you'll probably get bit by this concept-bug at least once.

To really see the difference, issue an <code>ls</code> before and after doing
a [./cmd_commit.wiki | <code>commit</code>].  Before, the status of files may be any of the three,
but after <code>commit</code>ting changes the status will be UNCHANGED "across
the board."

By way of example, here's what I see if I <code>fossil ls</code> in the
directory where I have checked out my testing repository:
<nowiki><pre>
    $ fossil ls
    ADDED     feegboing
    UNCHANGED fossil_docs.txt
    DELETED   nibcrod
</pre></nowiki>
But if I do a simple ls, what I get is
<nowiki><pre>
    $ ls
    feegboing  fossil_docs.txt  manifest.uuid  noodle.txt
    _FOSSIL_   manifest         nibcrod
</pre></nowiki>

The <code>ls</code> command is almost, but not quite entirely, the exact
opposite of the
[./cmd_extra.wiki | <code>extra</code> command].

<a name="notes">Notes:</a>
  *  If you come from the <b>Windows</b> world, it will help to know that 'ls' is the usual <b>unix</b> command for listing a directory.
  *  There are more states for a file to be in than those listed, including MISSING, EDITED, RENAMED and a couple of others.

See also: [./cmd_add.wiki | fossil add],
[./rm.wiki | fossil rm],
[./cmd_extra.wiki | fossil extra],
[./cmd_commit.wiki | fossil commit],
[./concepts.wiki | Fossil concepts],
[./reference.wiki | Reference]
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<h2>mv | rename</h2>

The <code>mv</code> (alias "<code>rename</code>") command tells
<b>fossil</b> that a file has gone from one external name to another
without changing content.

You could do this by renaming the file in the file system,
[./cmd_rm.wiki | deleting] the old name from the project, and
[./cmd_add.wiki | adding] the new name.  But you would lose the
continuity of the <u>content's</u> history that way.  Using
<code>mv</code> makes the name change a part of the history
maintained by <b>fossil</b>.  You will, of course, need a good
comment somewhere (say, the commit comment) if you want to
remember <em>why</em> you changed the name...  <b>fossil</b>
only maintains history, it doesn't (yet) explain it.

<code>mv</code> is much like the [./cmd_rm.wiki | <code>rm</code>]
command, in that it manipulates <b>fossil</b>'s "idea" of what is
part of the project.  The difference is that <code>mv</code> assumes
you have actually made some change to the file system.

See also: [./cmd_rm.wiki | fossil rm],
[./cmd_add.wiki | fossil add],
[./reference.wiki | Reference]
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<h2>new</h2>

The <code>new</code> command allows you to create a brand new
repository.

Pragmatically, this means that an SQLite database is created with
whatever name you specified, and set up with the appropriate tables
and initial data.

There's not much to <code>new</code>, it's what happens afterward that
gets a project going:

  Once you have a new repository file, you need to create and cd to a
  directory in which you will store your files, or move into an
  existing directory which contains the files for a project.

  Then, you need to [./cmd_open.wiki | <code>open</code>] the new
  repository, and get the server running so you can set up the project
  name and so forth.

  Finally, you'll [./cmd_add.wiki | <code>add</code>] files to it.  If
  you are adding exisiting files, you can add them individually, via
  globbing from the shell, or by adding the directory (which will add
  all of the directory's file-system descendants recursively.)

But you can't do all that until you create a repository file with
<code>new</code>.

See also:
[./cmd_open.wiki | fossil open],
[./cmd_add.wiki | fossil add],
[./cmd_server.wiki | fossil ui],
[./reference.wiki | Reference]
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<h2>del | rm</h2>

The <code>del</code> (alias <code>rm</code>) command takes a "file"
<em>out</em> of a project.

It does <u>not</u> delete the file from the repository, it does
<u>not</u> remove the file from the file system on disk.  It tells
<b>fossil</b> that the file is no longer a part of the project for
which <b>fossil</b> is maintaining the sources.

For example, if you have a nice, clean source tree and use the
[./cmd_extra.wiki | <code>extra</code>] command on it, you won't
get any output.  If you then <code>rm</code> some file and commit
the change, that file will be listed by the <code>extra</code>
command.

The file is still on the disk, and it is still in the repository.
<strong>But</strong> the file <em>is not part of the project</em>
anymore.  Further changes to the file will not be checked in unless
you [./cmd_add.wiki | <code>add</code>] the file again.

It can initially be confusing to see a file that's been "deleted"
still showing up in the files list in the repository, but remember
that the files list currently<a href="#vnote"><sup>*</sup></a> shows
all of the files that have ever been in the repository <em>because
<b>fossil</b> is a source control system and therefore keeps a record
of the history of a project.</em>

To get a list of the files <em>only in the current version</em> of the
project, use the [./cmd_ls.wiki | <code>ls</code>] command.

The <code>del</code> command is the logical opposite of the
[./cmd_add.wiki | <code>add</code>] command, in its single-file-add
form.

<font size="-1"><a name="vnote"><sup>*</sup></a>version 7c281b629a on 20081220</font>

See also: [./cmd_add.wiki | fossil add],
[./cmd_ls.wiki | fossil ls],
[./reference.wiki | Reference]
Deleted www/cmd_status.wiki.
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<h2>status</h2>

The <code>status</code> command is informational, it doesn't do anything to
a checked-out project, but it tells you something about it.

Running <code>&nbsp;fossil&nbsp;status&nbsp;</code> currently prefixes
the output of the <code>[./cmd_changes.wiki | changes]</code> command
with information about the repository and checkout.  The information
is in the form of the [./concepts.wiki#aidex | Artifact ID]s of the
server code, the checkout, and the parent (of, I <em>think</em> the
checkout.)

This is useful for getting an at-a-glance view of the state of your
project, especially in a situation where you need the artifact IDs.

Here is what I get when I issue a <code>status</code> on my local
version of the <b>fossil</b> repository as I write this:

<nowiki><pre>
   $ fossil status
   repository:   /home/me/myclone.fossil
   local-root:   /home/me/fossil/
   server-code:  99d6c9cf3f262720579db177503812814d712fc7
   checkout:     a8c3a7ea9249281e0a1fb55fb31d2ad57844f848
   parent:       21cecd209f7201f17e8a784c0d8f735603d440ae
   EDITED   www/cmd_.wiki-template
   EDITED   www/cmd_add.wiki
   EDITED   www/cmd_all.wiki
   EDITED   www/cmd_extra.wiki
   EDITED   www/cmd_ls.wiki
   EDITED   www/cmd_update.wiki
   EDITED   www/index.wiki
   $
</pre></nowiki>

Once I actually make changes to the repository (say, a
[./cmd_commit.wiki | commit]) most of that will change&#8212;all
of those files showing as "EDITED" will be checked in and won't
show up, and the artifact IDs will reflect the new state of the
repository.

If the only thing you want to see is which files in the checked-out
source tree have changed in some way, use the
[./cmd_changes.wiki | <code>changes</code>] command.

If what you want is the files in the checked-out source tree which are
<em>not</em> part of the project, use the
[./cmd_extra.wiki | <code>extra</code>] command.

See also: [./cmd_changes.wiki | fossil changes],
[./cmd_extra.wiki | fossil extra],
[./concepts.wiki | <i>Fossil concepts</i>],
[./reference.wiki | Reference]
Deleted www/cmd_sync.wiki.
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<h2>sync</h2>

The <code>sync</code> command [./cmd_pull.wiki | <code>pull</code>]s and
[./cmd_push.wiki | <code>push</code>]es repository changes simultaneously.

This applies to repositories available via a URL, of course.  If your
project is strictly local you can do all of the distributed stuff as
long as you are "serving" the repository via http in some fashion, but
it's probably pointless to do so.

Assuming you aren't running <b>fossil</b> as a high-powered version of
[http://www.gnu.org/software/rcs | RCS], your use of <code>sync</code>
in your projects is up to you.  <b>fossil</b> defaults to using a
[./cmd_setting.wiki | setting] of <code>autosync</code>
If you have cloned a repository you will automatically sync with the
original if you [./cmd_commit.wiki | commit] changes to your local
version <em>unless</em> you customize your configuration.

See also: [./cmd_pull.wiki | fossil pull],
[./cmd_push.wiki | fossil push],
[./cmd_setting.wiki | fossil setting],
[./reference.wiki | Reference]
Deleted www/cmd_update.wiki.
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<h2>update</h2>

What do you do if you have changes out on a repository and
you want them merged with your checkout?

You use the <code>update</code> command.

<b>fossil</b> can [./about_checkout.wiki | overwrite] any
changes you've made to your checkout, or it can
[./about_merge.wiki | merge] whatever changes have occurred
in the repo into your checkout.

Update <em>merges</em> changes from the repository into your checkout.

<b>fossil</b> uses a simple conflict resolution strategy for merges:
the latest change wins.

Local intranet <code>[./cmd_commit.wiki | commit]</code>s
(by someone else)
or Net <code>[./cmd_pull.wiki | pull]</code>s from a server
will usually require a <code>fossil&nbsp;update</code> afterward.

Local commits are likely to be made with
[./cmd_settings.wiki#autosync | automatic syncing]
set to "on", however, so if you don't use <b>fossil</b> for Net-wide
projects you may never have to use <code>update</code>.

See also: [./cmd_pull.wiki | fossil pull],
[./cmd_commit.wiki | fossil commit],
[./cmd_settings.wiki#autosync | fossil setting] (autosync),
[./about_checkout.wiki | <i>checkouts</i>],
[./about_merge.wiki | <i>merging</i>],
[./reference.wiki | Reference]
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<h2>version</h2>

The <code>version</code> command is informational, it doesn't do
anything to a checked-out project, but it tells you something about
it.

Issuing the version command will print out the short-form of the
artifact ID for the fossil executable.

See also: [./cmd_status.wiki | fossil status],
[./cmd_info.wiki | fossil info],
[./reference.wiki | Reference]
Added www/co-vs-up.md.































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# Checkout vs Update

Fossil has two commands that look like they do the same thing on initial
examination, [`fossil update`][up] and [`fossil checkout`][co], but
there are several key differences:

1.  `fossil checkout` aborts if there are changed files in the local
    directory unless you give the `--force` option, whereas
    `fossil update` merges upstream changes with your local changes.
    Since Fossil tends to follow the CVS command design, and CVS
    popularized the [merge on update][cvsmu] workflow, we expect that
    Fossil’s update behavior is more likely to be what you want.

2.  Update triggers an autosync attempt; checkout does not.

3.  Several features in `fossil update` do not exist in
    `fossil checkout`, so developing a habit to type `fossil up` 
    means you’re more likely to have the features you want at hand.

4.  Inversely, the `fossil checkout --keep` feature doesn’t exist in
    `fossil update`, but it’s a rarely-needed operation, so it doesn’t
    provide a good reason to develop a habit of using `fossil checkout`
    instead.

In summary, these are two separate commands; neither is an alias for the
other. They overlap enough that they can be used interchangeably for
some use cases, but `update` is more powerful and more broadly useful.

[co]:    /help?cmd=checkout
[cvsmu]: http://web.mit.edu/gnu/doc/html/cvs_7.html#SEC37
[up]:    /help?cmd=update
Added www/collisions.ipynb.











































































































































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{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "*Pull in the packages we need:*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "require(stats)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Parameters\n",
    "\n",
    "* **cpd** - Checkins per day. Defaults to 20.\n",
    "\n",
    "* **days** - Number of days to simulate.  Defaults to 10000, or roughly\n",
    "    40 working years.\n",
    "\n",
    "* **winSz** - Size of the commit window as a fraction of `workSec`. Defaults\n",
    "    to 0.01%, which is roughly 3 seconds for the default 8-hour work day, a\n",
    "    a long-ish commit time for Fossil.\n",
    "\n",
    "* **workSec** - Seconds in working day, defaulting to 8 hours.  This value\n",
    "    only affects the reporting output, not the results of the underlying\n",
    "    simulation.  It's a scaling parameter to humanize the results.\n",
    "    \n",
    "* **spread** - Adjustment factor in computing the standard deviation for our \n",
    "    normally-distributed random numbers. The default gives \"nice\" distributions,\n",
    "    spread over the working day with a low chance of generating values outside\n",
    "    the working day.\n",
    "    \n",
    "    The smaller this value gets (&lt;4), the more spread out the checkins, and\n",
    "    so the lower the chance of collisions.  You might want to decrease it a bit\n",
    "    to simulate early and late workers.\n",
    "    \n",
    "    As you increase this value (&gt;4) you're simulating a work environment\n",
    "    where people tend to check their work in closer and closer to mid-day,\n",
    "    which increases the chance of collision."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "collisions <- function(\n",
    "        cpd = 20,\n",
    "        days = 10000,\n",
    "        winSz = 0.01 / 100,\n",
    "        workSec = 8 * 60 * 60,\n",
    "        spread = 4)\n",
    "{\n",
    "    cat(\"Running simulation...\\n\")\n",
    "\n",
    "    day = 0\n",
    "    collisions = 0\n",
    "    winSec = workSec * winSz\n",
    "    mean = workSec / 2\n",
    "    sd = workSec / spread\n",
    "\n",
    "    while (day < days) {\n",
    "        # Create the commit time vector as random values in a normal\n",
    "        # distribution.\n",
    "        times = sort(rnorm(cpd, mean, sd))\n",
    "\n",
    "        # Are there any pairs in the time vector that are within the\n",
    "        # passed window size?  If so, that's a Fossil checkin collision.\n",
    "        i = 1\n",
    "        while (i < cpd) {\n",
    "            if (abs(times[i] - times[i + 1]) < winSec) {\n",
    "                collisions = collisions + 1\n",
    "            }\n",
    "            i = i + 1\n",
    "        }\n",
    "        \n",
    "        day = day + 1\n",
    "    }\n",
    "    \n",
    "    cat(\"Found\", collisions, \"collisions in\", days, (workSec / 3600),\n",
    "        \"hour working days with\", winSec, \"second windows.\\n\")\n",
    "}"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "*Run the following cell, possibly changing parameters documented above:*"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Running simulation...\n",
      "Found 422 collisions in 10000 8 hour working days with 2.88 second windows.\n"
     ]
    }
   ],
   "source": [
    "collisions()"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "R",
   "language": "R",
   "name": "ir"
  },
  "language_info": {
   "codemirror_mode": "r",
   "file_extension": ".r",
   "mimetype": "text/x-r-source",
   "name": "R",
   "pygments_lexer": "r",
   "version": "3.3.2"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}
Added www/colordiff.md.








































































































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# Colorized Diffs

The oldest and most widely compatible method to get colorized diffs in
Fossil is to use its web UI:

    fossil ui --page '/vdiff?from=2024-04-01&to=trunk'

That syntax is admittedly awkward, and it doesn’t work where “from†is
the current checkout.  Fortunately, there are many other methods to get
colorized `diff` output from Fossil.


<a id="ui"></a>
## `fossil diff -b`

This produces a graphical diff in HTML format and sends it to the
user’s default web browser for viewing.



<a id="ui"></a>
## `fossil diff -tk`

You may be surprised to learn that the prior feature doesn’t use any of
the skinning or chrome from Fossil UI. This is because it is meant as a
functional replacement for an older method of getting colorized diffs,
“`fossil diff -tk`â€. The feature was added after Apple stopped shipping
Tcl/Tk in macOS, and the third-party replacements often failed to work
correctly. It’s useful on other platforms as well.


<a id="git"></a>
## Delegate to Git

It may be considered sacrilege by some, but the most direct method for
those who want Git-like diff behavior may be to delegate diff behavior
to Git:

    fossil set --global diff-command 'git diff --no-index'

The flag permits it to diff files that aren’t inside a Git repository.


<a id="diffutils"></a>
## GNU Diffutils

If your system is from 2016 or later, it may include [GNU Diffutils][gd]
3.4 or newer, which lets you say:

    fossil set --global diff-command 'diff -dwu --color=always'

You might think you could give `--color=auto`, but that fails with
commands like “`fossil diff | less`†since the pipe turns the output
non-interactive from the perspective of the underlying `diff` instance.

This use of unconditional colorization means you will then have to
remember to add the `-i` option to `fossil diff` commands when producing
`patch(1)` files or piping diff output to another command that doesn’t
understand ANSI escape sequences, such as [`diffstat`][ds].

[ds]: https://invisible-island.net/diffstat/
[gd]: https://www.gnu.org/software/diffutils/


<a id="bat"></a>
## Bat, the Cat with Wings

We can work around the `--color=auto` problem by switching from GNU less
as our pager to [`bat`][bat], as it can detect GNU diff output and
colorize it for you:

    fossil set --global diff-command 'diff -dwu --color=auto'
    fossil diff | bat

In this author’s experience, that works a lot more reliably than GNU
less’s ANSI color escape code handling, even when you set `LESS=-R` in
your environment.

The reason we don’t leave the `diff-command` unset in this case is that
Fossil produces additional lines at the start which confuse the diff
format detection in `bat`. Forcing output through an external diff
command solves that. It also means that if you forget to pipe the output
through `bat`, you still get colorized output from GNU diff.

[bat]: https://github.com/sharkdp/bat


<a id="colordiff"></a>
## Colordiff

A method that works on systems predating GNU diffutils 3.4 or the
widespread availability of `bat` is to install [`colordiff`][cdurl], as
it is included in [many package systems][cdpkg], including ones for
outdated OSes. That then lets you say:

    fossil set --global diff-command 'colordiff -dwu'

The main reason we list this alternative last is that it has the same
limitation of unconditional color as [above](#diffutils).

[cdurl]: https://www.colordiff.org/
[cdpkg]: https://repology.org/project/colordiff/versions

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
Deleted www/concept1.gif.

cannot compute difference between binary files

Deleted www/concept2.gif.

cannot compute difference between binary files

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<title>Fossil Concepts</title>
<h1 align="center">Fossil Concepts</h1>

<h2>1.0 Introduction</h2>

[./index.wiki | Fossil] is a
[http://en.wikipedia.org/wiki/Software_configuration_management | software configuration management] system.
Fossil is software that is designed to control and track the
development of a software project and to record the history
of the project.
There are many such systems in use today.  Fossil strives to
distinguish itself from the others by being extremely simple
to setup and operate.

This document is intended as a quick introduction to the concepts
behind fossil.
behind Fossil.

See also:

  *  [./glossary.md | Glossary]
  *  [./quickstart.wiki | Quick start guide]

<h2>2.0 Composition Of A Project</h2>
<img src="concept1.gif" align="right" hspace="10">

<verbatim type="pikchr float-right">
R1: cylinder "Remote" "Repository" fill 0xadd8e6 rad 70%
R2: cylinder same "Remote" "Repository" at 2.5*R1.wid right of R1
    spline <-> from R1.e to 0.6<R1.se,R2.sw> then to 0.4<R1.ne,R2.nw> then to R2.w
    text "HTTPS" at .5<R1.ne,R2.nw>
R3: cylinder same "Local" "Repository" fill 0x90ee90 \
    at dist(R1.e,R2.w) below .5<R1,R2>
    spline <-> from .5<R1.s,R1.se> to 0.6<R1.s,R3.w> to 0.5<R1.se,R3.n> to .5<R3.nw,R3.n> \
      "HTTPS" above behind R1
    spline <-> from R2.sw to .6<R2.sw,R3.n> to .5<R2.s,R3.e> to R3.ne "HTTPS" ljust
T1: line from 1.0cm heading 200 from R3.sw go 2.2cm heading 150 then 2.2cm west close \
       fill 0xffff00 "Local" below "Source Tree" below
T2: line from 1.0cm heading 160 from R3.se same "Local" below "Source Tree" below
    line <-> from R3.sw to T1.start
    line <-> from R3.se to T2.start
</verbatim>

A software project normally consists of a "source tree".
A source tree is a hierarchy of files that are used to generate
the end product.  The source tree changes over time as the
software grows and expands and as features are added and bugs
are fixed.  A snapshot of the source tree at any point in time
is called a "version" or "revision" or a "baseline" of the product.
In fossil, we use the name "check-in".
In Fossil, we use the name "check-in".

A "repository" is a database that contains copies of all historical
check-ins for a project.  Check-ins are normally stored in the
repository in a highly space-efficient compressed format (delta encoding).
But that is an implementation detail that you the user need not worry over.
Think of the repository as a safe place where all your old check-ins are
securely stored away and available for retrieval whenever you need
them.

A repository in fossil is a single file on your disk.  This file
A repository in Fossil is a single file on your disk.  This file
might be rather large (dozens or hundreds of megabytes for a large
or long running project) but it is nevertheless just a file.  You
can move it around, rename it, write it out to a memory stick, or
do anything else you normally do with files.

Each source tree that is controlled by fossil is associated with
Each source tree that is controlled by Fossil is associated with
a single repository on the local disk drive.  You can tie two or more
source trees to a single repository if you want (though one
tree per repository is the most common configuration.)  So a
single repository can be associated with many source trees, but
each source tree is associated with only one repository.

Fossil source trees may not overlap.  A fossil source tree is identified
by a file named "_FOSSIL_" in the root directory of the source tree.  Every
Fossil source trees may not overlap.  A Fossil source tree is identified
by a file named "_FOSSIL_" (or ".fslckout", but this article will always
use the name "_FOSSIL_") in the root directory of the source tree.  Every
file that is a sibling of _FOSSIL_ and every file in every subfolder is
considered potentially a part of the source tree.  The _FOSSIL_ file
contains (among other things) the pathname of the repository with which
the source tree is associated.  On the other hand, the repository has
no record of its source trees.  So you are free to delete a source tree
or move it around without consequence.  But if you move or rename or
delete a repository, then any source trees associated with that repository
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remote repository into a local repository.  Or one can do a "sync"
which is a shortcut for doing both a push and a pull at the same time.
Fossil also has the concept of "cloning".  A "clone" is like a "pull",
except that instead of beginning with an existing local repository,
a clone begins with nothing and creates a new local repository that
is a duplicate of a remote repository.

Communication between repositories is via HTTP.  Remote
Communication between repositories is normally via HTTPS.  (SSH is also
supported, as is unencrypted HTTP.) Remote
repositories are identified by URL.  You can also point a web browser
at a repository and get human-readable status, history, and tracking
information about the project.

<h3>2.1 Identification Of Artifacts</h3>
<h3 id="artifacts">2.1 Identification Of Artifacts</h3>

A particular version of a particular file is called an "artifact".
Each artifact has a universally unique name which is the
<a href="http://en.wikipedia.org/wiki/SHA">SHA1</a> hash of the content
of that file expressed as 40 characters of lower-case hexadecimal.  Such
a hash is referred to as the Artifact Identifier or Artifact ID
A particular version of a particular file is called an "artifact".  Each
artifact has a universally unique name which is the <a
href="http://en.wikipedia.org/wiki/SHA1">SHA1</a> or <a
href="http://en.wikipedia.org/wiki/SHA3">SHA3-256</a> hash of the
content of that file expressed as either 40 or 64 characters of
lower-case hexadecimal. (See the [./hashpolicy.wiki|hash policy
document] for information on which algorithm is used, when.) Such a hash
is referred to as the Artifact ID. These hash algorithms were created
for the artifact.  The SHA1 algorithm is created with the purpose of
providing a highly forgery-resistant identifier for a file.  Given any
file it is simple to find the artifact ID for that file.  But given a
artifact ID it is computationally intractable to generate a file that will
have that Artifact ID.
with Fossil's purpose in mind: to provide a highly forgery-resistant
identifier for a blob of data, such as a file. Given any file, it is
simple to find the artifact ID for that file. But given an artifact ID,
it is computationally intractable to generate a file that will have that
same artifact ID.

Artifact IDs look something like this:

<blockquote><b>
6089f0b563a9db0a6d90682fe47fd7161ff867c8<br>
59712614a1b3ccfd84078a37fa5b606e28434326<br>
19dbf73078be9779edd6a0156195e610f81c94f9<br>
b4104959a67175f02d6b415480be22a239f1f077<br>
<pre>
6089f0b563a9db0a6d90682fe47fd7161ff867c8
59712614a1b3ccfd84078a37fa5b606e28434326
19dbf73078be9779edd6a0156195e610f81c94f9
b4104959a67175f02d6b415480be22a239f1f077
997c9d6ae03ad114b2b57f04e9eeef17dcb82788
</b></blockquote>
</pre>

When referring to an artifact using fossil, you can use a unique
When referring to an artifact using Fossil, you can use a unique
prefix of the artifact ID that is four characters or longer.  This saves
a lot of typing.  When displaying artifact IDs, fossil will usually only
a lot of typing.  When displaying artifact IDs, Fossil will usually only
show the first 10 digits since that is normally enough to uniquely
identify a file.

Changing (or adding or removing) a single byte in a file results
in a completely different artifact ID.  And since the artifact ID is the name of
the artifact, making any change to a file results in a new artifact.
In this way, artifacts are immutable.
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such a way that it can be handed a set of artifacts in any
order and it can figure out the relationship between those
artifacts and reconstruct the complete development history of
a software project.

<h3>2.2 Manifests</h3>

At the root of a source tree is a special file called the
"manifest".  The manifest is a listing of all other files in
that source tree.  The manifest contains the (complete) artifact ID 
Associated with every check-in is a special file called the
[./fileformat.wiki#manifest| "manifest"].  The manifest is a
listing of all other files in
that source tree.  The manifest contains the (complete) artifact ID
of the file and the name of the file as it appears on disk,
and thus serves as a mapping from artifact ID to disk name.  The artifact ID
of the manifest is the identifier for the entire check-in.  When
you look at a "timeline" of changes in fossil, the ID associated
you look at a "timeline" of changes in Fossil, the ID associated
with each check-in or commit is really just the artifact ID of the
manifest for that check-in.

The manifest file is not normally a real file on disk.  Instead,
the manifest is computed in memory by Fossil whenever it needs it.
However, the "fossil setting manifest on" command will cause the
manifest file to be materialized to disk, if desired.  Both Fossil
itself, and SQLite cause the manifest file to be materialized to disk
so that the makefiles for these projects can read the manifest and
embed version information in generated binaries.

<p>Fossil automatically generates a manifest whenever you "commit" 
Fossil automatically generates a manifest whenever you "commit"
a new check-in.  So this is not something that you, the developer,
need to worry with.  The format of a manifest is intentionally
designed to be simple to parse, so that if
you want to read and interpret a manifest, either by hand or
with a script, that is easy to do.  But you will probably never
need to do so.</p>
need to do so.

<p>In addition to identifying all files in the check-in, a
In addition to identifying all files in the check-in, a
manifest also contains a check-in comment, the date and time
when the check-in was established, who created the check-in,
and links to other check-ins from which the current check-in
is derived.  There is also a couple of checksums used to verify
is derived.  There are also a couple of checksums used to verify
the integrity of the check-in.  And the whole manifest might
be PGP clearsigned.</p>
be PGP clearsigned.

<a name="keyconc"></a>
<h3>2.3 Key concepts</h3>
<h3 id="keyconc">2.3 Key concepts</h3>

<ul>
<li>A <b>check-in</b> is a set of files arranged
    in a hierarchy.</li>
<li>A <b>repository</b> keeps a record of historical check-ins.</li>
<li>Repositories share their changes using <b>push</b>, <b>pull</b>,
    <b>sync</b>, and <b>clone</b>.</li>
<li>A particular <u>version</u> of a particular file is an <b>artifact</b>
    that is identified by an <b>artifact ID</b>.</li>
<li>Artifacts tracked by fossil are inherently immutable.</li>
<li>Artifacts tracked by Fossil are inherently immutable.</li>
<li>Fossil automatically generates a <b>manifest</b> file that identifies
    every artifact in a check-in.</li>
<li>The artifact ID of the manifest is the identifier of the check-in.</li>
</ul>

<h2>3.0 Fossil - The Program</h2>

Fossil is software.  The implementation of fossil is in the form
of a single executable named "fossil" (or "fossil.exe" on windows).
To install fossil on your system,
Fossil is software.  The implementation of Fossil is in the form
of a single executable named "fossil" (or "fossil.exe" on Windows).
To install Fossil on your system,
all you have to do is obtain a copy of this one executable file (either
by downloading a
<a href="http://www.fossil-scm.org/download.html">pre-compiled version</a>
<a href="https://fossil-scm.org/home/uv/download.html">pre-compiled version</a>
or [./build.wiki | compiling it yourself]) and then
putting that file somewhere on your PATH.

Fossil is completely self-contained.  It is not necessary to
install any other software in order to use fossil.  You do <u>not</u> need
CVS, gzip, diff, rsync, Python, Perl, Tcl, Java, apache, PostgreSQL, MySQL,
install any other software in order to use Fossil.  You do <u>not</u> need
CVS, gzip, diff, rsync, Python, Perl, Tcl, Java, Apache, PostgreSQL, MySQL,
SQLite, patch, or any similar software on your system in order to use
fossil effectively.  You will want to have some kind of text editor
Fossil effectively.  You will want to have some kind of text editor
for entering check-in comments.  Fossil will use whatever text editor
is identified by your VISUAL environment variable.  Fossil will also
use GPG to clearsign your manifests if you happen to have it installed,
but fossil will skip that step if GPG missing from your system.
You can optionally set up fossil to use external "diff" programs, 
though fossil has an excellent built-in "diff" algorithm that works
fine for most people.
but Fossil will skip that step if GPG is missing from your system.
You can optionally set up Fossil to use external "diff" programs,
though Fossil has an excellent built-in "diff" algorithm that works
fine for most people.  If you happen to have Tcl/Tk installed on your
system, Fossil will use it to generate a graphical "diff" display when
you use the --tk option to the "diff" command, but this too is entirely
optional.


To uninstall fossil, simply delete the executable.
To uninstall Fossil, simply delete the executable.

To upgrade an older version of fossil to a newer version, just
replace the old executable with the new one.  You might need to 
To upgrade an older version of Fossil to a newer version, just
replace the old executable with the new one.  You might need to
run "<b>fossil all rebuild</b>" to restructure your repositories after
an upgrade.  Running "all rebuild" never hurts, so when upgrading it
is a good policy to run it even if it is not strictly necessary.

To use fossil, simply type the name of the executable in your
To use Fossil, simply type the name of the executable in your
shell, followed by one of the various built-in commands and
arguments appropriate for that command.  For example:

<blockquote><b>
fossil help
<pre>fossil help</pre>
</b></blockquote>

In the next section, when we say things like "use the <b>help</b>
command" we mean to use the command name "help" as the first
token after the name of the fossil executable, as shown above.
token after the name of the Fossil executable, as shown above.

<a name="workflow"></a>
<h2>4.0 Workflow</h2>
<h2 id="workflow">4.0 Workflow</h2>

<verbatim type="pikchr float-right">
    down
R1: cylinder "Remote" "Repository" fill 0xadd8e6 rad 70%
    move 150%
R2: cylinder same "Local" "Repository" fill 0x90ee90
    move 120%
T1: line go 2.2cm heading 150 then 2.2cm west close \
       fill 0xffff00 "Local" below "Source Tree" below
    arrow from R2.n+(-0.25cm,+0.25cm) to R1.s+(-0.25cm,-0.25cm) \
       "push " rjust
    arrow from R1.s+(+0.25cm,-0.25cm) to R2.n+(+0.25cm,+0.25cm) \
       " pull" ljust " clone" ljust
    arrow from T1.start+(-0.25cm,+0cm) to R2.s+(-0.25cm,-0.25cm) \
       "commit " rjust
    arrow from R2.s+(+0.25cm,-0.25cm) to T1.start+(+0.25cm,+0cm) \
       " open" ljust " update" ljust " merge" ljust
</verbatim>
<img src="concept2.gif" align="right" hspace="10">


Fossil has two modes of operation: <i>"autosync"</i> and
<i>"manual-merge"</i>
Autosync mode is reminiscent of CVS or SVN in that it automatically
keeps your changes in synchronization with your co-workers through
the use of a central server.  The manual-merge mode is the standard workflow
for GIT or Mercurial in that your local repository develops
independently of your coworkers and you share and merge your changes manually.
An interesting feature of fossil is that it supports both autosync
An interesting feature of Fossil is that it supports both autosync
and manual-merge work flows.

The default setting for fossil is to be in autosync mode.  You
The default setting for Fossil is to be in autosync mode.  You
can change the autosync setting or check the current autosync
setting using commands like:

<blockquote>
<b>fossil setting autosync on<br>
fossil setting autosync off<br>
<b>fossil settings</b>
</blockquote>
<pre>
fossil setting autosync on
fossil setting autosync off
fossil settings
</pre>

By default, fossil runs with autosync mode turned on.  The
authors finds that projects run more smoothly in autosync mode since
autosync helps to prevent pointless forking and merge and helps keeps
By default, Fossil runs with autosync mode turned on.  The
authors find that projects run more smoothly in autosync mode since
autosync helps to prevent pointless forking and merging and helps keeps
all collaborators working on exactly the same code rather than on their
own personal forks of the code.  In the author's view, manual-merge mode
should be reserved for disconnected operation.

<h3>4.1 Autosync Workflow</h3>

<ol>
<li>
Establish a local repository using either the <b>new</b> command
to start a new project, or the <b>clone</b> command to make a clone
of a repository for an existing project. 
of a repository for an existing project.
</li>

<li>
Establish one or more source trees using
the <b>open</b> command with the name of the repository file as its
argument.
</li>

<li>
The <b>open</b> command in the previous step populates your local source
tree with a copy of the latest check-in.  Usually this is what you want.
In the rare cases where it is not, use the <b>update</b> command to
switch to a different check-in.  
switch to a different check-in.
Use the <b>timeline</b> or <b>leaves</b> commands
to identify alternative check-ins to switch to.
</li>

<li>
Edit the code.  Add new files to the source tree using the <b>add</b>
command.  Omit files from future check-ins using the <b>rm</b> command.
(Even when you remove files from future check-ins, those files continue
to exist in historical check-ins.)  Test your changes.
</li>

<li>
Create a new check-in using the <b>commit</b> command.  You will be prompted
for a check-in comment and also for your GPG key if you have GPG installed.
The commit copies the edits you have made in your local source
tree into your local repository.  After your commit completes, fossil will
tree into your local repository.  After your commit completes, Fossil will
automatically <b>push</b> your changes back to the server
you cloned from or whatever server you most recently synced with.
</li>

<li>
When your coworkers make their own changes, you can merge those changes
into your local local source tree using the <b>update</b> command.  
into your local local source tree using the <b>update</b> command.
In autosync mode, <b>update</b> will first go back to the server you
cloned from or with which you most recently synced, and pull down all
recent changes into your local repository.  Then it will merge recent
changes into your local source tree.  If you do an <b>update</b> and
find that it messes something up in your source tree (perhaps a co-worker
checked in incompatible changes) you can use the <b>undo</b> command 
checked in incompatible changes) you can use the <b>undo</b> command
to back out the changes.
</li>

<li>
Repeat all of the above until you have generated great software.
</li>
</ol>
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to pull those changes into your local repository.  Note that <b>pull</b>
does not move the changes into your local source tree, only into your
local repository.
</li>

<li>
Once changes are in your local repository, use
use the <b>update</b> command to merge them to your local source tree.
the <b>update</b> command to merge them to your local source tree.
If you merge in some changes and find that the changes do not work out
or are not to your liking, you can back out the changes using the
<b>undo</b> command.
</li>

<li>
If two or more people ran "commit" against the same check-in, this will
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</ol>

<h2>5.0 Setting Up A Fossil Server</h2>

With other configuration management software, setting up a server is
a lot of work and normally takes time, patience, and a lot of system
knowledge.  Fossil is designed to avoid this frustration.  Setting up
a server with fossil is ridiculously easy.  You have three options:</p>
a server with Fossil is ridiculously easy.  You have four options:

<ol>
<li><b><a name="saserv"></a>Setting up a stand-alone server</b>

  #  <b>Stand-alone server.</b>
     Simply run the [/help?cmd=server|fossil server] or
From within your source tree just use the <b>server</b> command and
fossil will start listening for incoming requests on TCP port 8080.
     [/help?cmd=ui|fossil ui] command from the command-line.
You can point your web browser at <a href="http://localhost:8080/">
http://localhost:8080/</a> and begin exploring.  Or your coworkers
can do pushes or pulls against your server.  Use the <b>--port</b>
option to the server command to specify a different TCP port.  If
you do not have a local source tree, use the <b>-R</b> command-line
option to specify the repository file.

     <br><br>
A stand-alone server is a great way to set of transient connections
between coworkers for doing quick pushes or pulls.  But you can also
set up a permanent stand-alone server if you prefer.  Just make
arrangements for fossil to be launched with appropriate arguments
after every reboot.

  #  <b>CGI.</b>
If you just want a server to browse the built-in fossil website
locally, use the <b>ui</b> command in place of <b>server</b>.  The
<b>ui</b> command starts up a local server too, but it also takes
the additional step of automatically launching your webbrowser and
pointing at the new server.
</li>

<li><b>Setting up a CGI server</b>

If you have a web-server running on your machine already, you can
set up fossil to be run from CGI.  Simply create an executable script
     Install a 2-line CGI script on a CGI-enabled web-server like Apache.
     <br><br>
  #  <b>SCGI.</b>
     Start an SCGI server using the
     [/help?cmd=server| fossil server --scgi] command for handling
     SCGI requests from web-servers like Nginx.
     <br><br>
  #  <b>Inetd or Stunnel.</b>
     Configure programs like inetd, xinetd, or stunnel to hand off HTTP requests
     directly to the [/help?cmd=http|fossil http] command.
that looks something like this:

<blockquote><pre>
#!/usr/local/bin/fossil
repository: /home/me/bigproject.fossil
</pre></blockquote>

See the [./server/ | How To Configure A Fossil Server] document
Edit this script to use whatever pathnames are appropriate for
your project.  Then point your web browser at the script and off you
go.  The [./selfhost.wiki | self-hosting fossil repositories] are
all set up this way.</li>

for details.
<li><b>Setting up an inetd server</b>

If you have inetd or xinetd running on your system, you can set
those services up to launch fossil to deal with inbound TCP/IP connections
on whatever port you want.  Set up inetd or xinetd to launch fossil
like this:

<blockquote><pre>
/usr/local/bin/fossil http /home/me/bigproject.fossil
</pre></blockquote>

As before, change the filenames to whatever is appropriate for
your system.  You can have fossil run as any user that has write
permission on the repository and on the directory that contains the
repository.  But it is safer to run fossil as root.  When fossil
sees that it is running as root, it automatically puts itself into
a <a href="http://en.wikipedia.org/wiki/Chroot">chroot jail</a> and
drops all privileges prior to reading any information from the client.
Since fossil is a stand-alone program, you do not need to put anything
in the chroot jail with fossil in order for it to do its job.
</li>
</ol>

<h2>6.0 Review Of Key Concepts</h2>

<ul>
<li>The <b>fossil</b> program is a self-contained stand-alone executable.
    Just put it somewhere on your PATH to install it.</li>
<li>Use the <b>clone</b> or <b>new</b> commands to create a new repository.</li>
Added www/contact.md.














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# Contact Information

## Questions, Suggestions, and Bug Reports

The developers for Fossil monitor the [Fossil Forum][1].  Post there
with questions, improvement suggestions, and/or bug reports.

[1]: https://fossil-scm.org/forum/forum

## Security Problems and Vulnerabilities

If you think you have discovered a security vulnerability in Fossil
and want to report the problem privately, send
email to "drh&nbsp;at&nbsp;sqlite&nbsp;dot&nbsp;org".
Added www/containers.md.





































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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# OCI Containers

This document shows how to build Fossil into [OCI] compatible containers
and how to use those containers in interesting ways. We start off using
the original and still most popular container development and runtime
platform, [Docker], but since you have more options than that, we will
show some of these options later on.

[Docker]: https://www.docker.com/
[OCI]:    https://opencontainers.org/


## 1. Quick Start

Fossil ships a `Dockerfile` at the top of its source tree,
[here][DF], which you can build like so:

    $ docker build -t fossil .

If the image built successfully, you can create a container from it and
test that it runs:

    $ docker run --name fossil -p 9999:8080/tcp fossil

This shows us remapping the internal TCP listening port as 9999 on the
host. This feature of OCI runtimes means there’s little point to using
the “`fossil server --port`†feature inside the container. We can let
Fossil default to 8080 internally, then remap it to wherever we want it
on the host instead.

Our stock `Dockerfile` configures Fossil with the default feature set,
so you may wish to modify the `Dockerfile` to add configuration options,
add APK packages to support those options, and so forth.

The Fossil `Makefile` provides two convenience targets,
“`make container-image`†and “`make container-run`â€. The first creates a
versioned container image, and the second does that and then launches a
fresh container based on that image. You can pass extra arguments to the
first command via the Makefile’s `DBFLAGS` variable and to the second
with the `DCFLAGS` variable. (DB is short for “`docker build`â€, and DC
is short for “`docker create`â€, a sub-step of the “run†target.)
To get the custom port setting as in
second command above, say:

    $ make container-run DCFLAGS='-p 9999:8080/tcp'

Contrast the raw “`docker`†commands above, which create an
_unversioned_ image called `fossil:latest` and from that a container
simply called `fossil`. The unversioned names are more convenient for
interactive use, while the versioned ones are good for CI/CD type
applications since they avoid a conflict with past versions; it lets you
keep old containers around for quick roll-backs while replacing them
with fresh ones.

[DF]: /file/Dockerfile


## 2. <a id="storage"></a>Repository Storage Options

If you want the container to serve an existing repository, there are at
least two right ways to do it.

The wrong way is to use the `Dockerfile COPY` command, because by baking
the repo into the image at build time, it will become one of the image’s
base layers. The end result is that each time you build a container from
that image, the repo will be reset to its build-time state. Worse,
restarting the container will do the same thing, since the base image
layers are immutable. This is almost certainly not what you
want.

The correct ways put the repo into the _container_ created from the
_image_, not in the image itself.


### <a id="repo-inside"></a> 2.1 Storing the Repo Inside the Container

The simplest method is to stop the container if it was running, then
say:

    $ docker cp /path/to/my-project.fossil fossil:/museum/repo.fossil
    $ docker start fossil
    $ docker exec fossil chown -R 499 /museum

That copies the local Fossil repo into the container where the server
expects to find it, so that the “start†command causes it to serve from
that copied-in file instead. Since it lives atop the immutable base
layers, it persists as part of the container proper, surviving restarts.

Notice that the copy command changes the name of the repository
database. The container configuration expects it to be called
`repo.fossil`, which it almost certainly was not out on the host system.
This is because there is only one repository inside this container, so
we don’t have to name it after the project it contains, as is
traditional. A generic name lets us hard-code the server start command.

If you skip the “chown†command above and put “`http://localhost:9999/`â€
into your browser, expecting to see the copied-in repo’s home page, you
will get an opaque “Not Found†error. This is because the user and group
ID of the file will be that of your local user on the container’s host
machine, which is unlikely to map to anything in the container’s
`/etc/passwd` and `/etc/group` files, effectively preventing the server
from reading the copied-in repository file. 499 is the default “`fossil`â€
user ID inside the container, causing Fossil to run with that user’s
privileges after it enters the chroot. (See [below](#args) for how to
change this default.) You don’t have to restart the server after fixing
this with `chmod`: simply reload the browser, and Fossil will try again.


### 2.2 <a id="bind-mount"></a>Storing the Repo Outside the Container

The simple storage method above has a problem: containers are
designed to be killed off at the slightest cause, rebuilt, and
redeployed. If you do that with the repo inside the container, it gets
destroyed, too. The solution is to replace the “run†command above with
the following:

    $ docker run \
      --publish 9999:8080 \
      --name fossil-bind-mount \
      --volume ~/museum:/museum \
      fossil

Because this bind mount maps a host-side directory (`~/museum`) into the
container, you don’t need to `docker cp` the repo into the container at
all. It still expects to find the repository as `repo.fossil` under that
directory, but now both the host and the container can see that repo DB.

Instead of a bind mount, you could instead set up a separate
[volume](https://docs.docker.com/storage/volumes/), at which point you
_would_ need to `docker cp` the repo file into the container.

Either way, files in these mounted directories have a lifetime
independent of the container(s) they’re mounted into. When you need to
rebuild the container or its underlying image — such as to upgrade to a
newer version of Fossil — the external directory remains behind and gets
remapped into the new container when you recreate it with `--volume/-v`.


#### 2.2.1 <a id="wal-mode"></a>WAL Mode Interactions

You might be aware that OCI containers allow mapping a single file into
the repository rather than a whole directory.  Since Fossil repositories
are specially-formatted SQLite databases, you might be wondering why we
don’t say things like:

    --volume ~/museum/my-project.fossil:/museum/repo.fossil

That lets us have a convenient file name for the project outside the
container while letting the configuration inside the container refer to
the generic “`/museum/repo.fossil`†name. Why should we have to name
the repo generically on the outside merely to placate the container?

The reason is, you might be serving that repo with [WAL mode][wal]
enabled. If you map the repo DB alone into the container, the Fossil
instance inside the container will write the `-journal` and `-wal` files
alongside the mapped-in repository inside the container.  That’s fine as
far as it goes, but if you then try using the same repo DB from outside
the container while there’s an active WAL, the Fossil instance outside
won’t know about it. It will think it needs to write *its own*
`-journal` and `-wal` files *outside* the container, creating a high
risk of [database corruption][dbcorr].

If we map a whole directory, both sides see the same set of WAL files.
[Testing](https://tangentsoft.com/sqlite/dir/walbanger?ci=trunk)
gives us a reasonable level of confidence that using WAL across a
container boundary is safe when used in this manner.

[dbcorr]: https://www.sqlite.org/howtocorrupt.html#_deleting_a_hot_journal
[wal]:    https://www.sqlite.org/wal.html


## 3. <a id="security"></a>Security

### 3.1 <a id="chroot"></a>Why Not Chroot?

Prior to 2023.03.26, the stock Fossil container relied on [the chroot
jail feature](./chroot.md) to wall away the shell and other tools
provided by [BusyBox]. It included that as a bare-bones operating system
inside the container on the off chance that someone might need it for
debugging, but the thing is, Fossil is self-contained, needing none of
that power in the main-line use cases.

Our weak “you might need it†justification collapsed when we realized
you could restore this basic shell environment with a one-line change to
the `Dockerfile`, as shown [below](#run).

[BusyBox]: https://www.busybox.net/BusyBox.html


### 3.2 <a id="caps"></a>Dropping Unnecessary Capabilities

The example commands above create the container with [a default set of
Linux kernel capabilities][defcap]. Although Docker strips away almost
all of the traditional root capabilities by default, and Fossil doesn’t
need any of those it does take away, Docker does leave some enabled that
Fossil doesn’t actually need. You can tighten the scope of capabilities
by adding “`--cap-drop`†options to your container creation commands.

Specifically:

*   **`AUDIT_WRITE`**: Fossil doesn’t write to the kernel’s auditing
    log, and we can’t see any reason you’d want to be able to do that as
    an administrator shelled into the container, either. Auditing is
    something done on the host, not from inside each individual
    container.

*   **`CHOWN`**: The Fossil server never even calls `chown(2)`, and our
    image build process sets up all file ownership properly, to the
    extent that this is possible under the limitations of our
    automation.

    Curiously, stripping this capability doesn’t affect your ability to
    run commands like “`chown -R fossil:fossil /museum`†when
    you’re using bind mounts or external volumes — as we recommend
    [above](#bind-mount) — because it’s the host OS’s kernel
    capabilities that affect the underlying `chown(2)` call in that
    case, not those of the container.

    If for some reason you did have to change file ownership of
    in-container files, it’s best to do that by changing the
    `Dockerfile` to suit, then rebuilding the container, since that
    bakes the need for the change into your reproducible build process.
    If you had to do it without rebuilding the container, [there’s a
    workaround][capchg] for the fact that capabilities are a create-time
    change, baked semi-indelibly into the container configuration.

*    **`FSETID`**: Fossil doesn’t use the SUID and SGID bits itself, and
    our build process doesn’t set those flags on any of the files.
    Although the second fact means we can’t see any harm from leaving
    this enabled, we also can’t see any good reason to allow it, so we
    strip it.

*    **`KILL`**: The only place Fossil calls `kill(2)` is in the
    [backoffice], and then only for processes it created on earlier
    runs; it doesn’t need the ability to kill processes created by other
    users. You might wish for this ability as an administrator shelled
    into the container, but you can pass the “`docker exec --user`â€
    option to run commands within your container as the legitimate owner
    of the process, removing the need for this capability.

*   **`MKNOD`**: As of 2023.03.26, the stock container uses the
    runtime’s default `/dev` node tree. Prior to this, we had to create
    `/dev/null` and `/dev/urandom` inside [the chroot jail](#chroot),
    but even then, these device nodes were created at build time and
    were never changed at run time, so we didn’t need this run-time
    capability even then.

*    **`NET_BIND_SERVICE`**: With containerized deployment, Fossil never
    needs the ability to bind the server to low-numbered TCP ports, not
    even if you’re running the server in production with TLS enabled and
    want the service bound to port 443. It’s perfectly fine to let the
    Fossil instance inside the container bind to its default port (8080)
    because you can rebind it on the host with the
    “`docker create --publish 443:8080`†option. It’s the container’s
    _host_ that needs this ability, not the container itself.

    (Even the container runtime might not need that capability if you’re
    [terminating TLS with a front-end proxy](./ssl.wiki#server). You’re
    more likely to say something like “`-p localhost:12345:8080`†and then
    configure the reverse proxy to translate external HTTPS calls into
    HTTP directed at this internal port 12345.)

*   **`NET_RAW`**: Fossil itself doesn’t use raw sockets, and while
    you could [swap out the run layer](#run) for something more
    functional that *does* make use of raw sockets, there’s little call
    for it. The best reason I can come up with is to be able to run
    utilities like `ping` and `traceroute`, but since we aren’t doing
    anything clever with the networking configuration, there’s no
    particularly compelling reason to run these from inside the
    container. If you need to ping something, do it on the host.

    If we did not take this hard-line stance, an attacker that broke
    into the container and gained root privileges might use raw sockets
    to do a wide array of bad things to any network the container is
    bound to.

*    **`SETFCAP, SETPCAP`**: There isn’t much call for file permission
    granularity beyond the classic Unix ones inside the container, so we
    drop root’s ability to change them.

All together, we recommend adding the following options to your
“`docker run`†commands, as well as to any “`docker create`†command
that will be followed by “`docker start`â€:

    --cap-drop AUDIT_WRITE \
    --cap-drop CHOWN \
    --cap-drop FSETID \
    --cap-drop KILL \
    --cap-drop MKNOD \
    --cap-drop NET_BIND_SERVICE \
    --cap-drop NET_RAW \
    --cap-drop SETFCAP \
    --cap-drop SETPCAP

In the next section, we’ll show a case where you create a container
without ever running it, making these options pointless.

[backoffice]: ./backoffice.md
[defcap]:     https://docs.docker.com/engine/security/#linux-kernel-capabilities
[capchg]:     https://stackoverflow.com/a/45752205/142454



## 4. <a id="static"></a>Extracting a Static Binary

Our 2-stage build process uses Alpine Linux only as a build host. Once
we’ve got everything reduced to a single static Fossil binary,
we throw all the rest of it away.

A secondary benefit falls out of this process for free: it’s arguably
the easiest way to build a purely static Fossil binary for Linux. Most
modern Linux distros make this [surprisingly difficult][lsl], but Alpine’s
back-to-basics nature makes static builds work the way they used to,
back in the day. If that’s all you’re after, you can do so as easily as
this:

    $ docker build -t fossil .
    $ docker create --name fossil-static-tmp fossil
    $ docker cp fossil-static-tmp:/bin/fossil .
    $ docker container rm fossil-static-tmp

The result is six or seven megs, depending on the CPU architecture you
build for. It’s built stripped.

[lsl]: https://stackoverflow.com/questions/3430400/linux-static-linking-is-dead


## 5. <a id="custom" name="args"></a>Customization Points

### <a id="pkg-vers"></a> 5.1 Fossil Version

The default version of Fossil fetched in the build is the version in the
checkout directory at the time you run it.  You could override it to get
a release build like so:

    $ docker build -t fossil --build-arg FSLVER=version-2.20 .

Or equivalently, using Fossil’s `Makefile` convenience target:

    $ make container-image DBFLAGS='--build-arg FSLVER=version-2.20'

While you could instead use the generic
“`release`†tag here, it’s better to use a specific version number
since container builders cache downloaded files, hoping to
reuse them across builds. If you ask for “`release`†before a new
version is tagged and then immediately after, you might expect to get
two different tarballs, but because the underlying source tarball URL
remains the same when you do that, you’ll end up reusing the
old tarball from cache. This will occur
even if you pass the “`docker build --no-cache`†option.

This is why we default to pulling the Fossil tarball by checkin ID
rather than let it default to the generic “`trunk`†tag: so the URL will
change each time you update your Fossil source tree, forcing the builder to
pull a fresh tarball.


### 5.2 <a id="uids"></a>User & Group IDs

The “`fossil`†user and group IDs inside the container default to 499.
Why? Regular user IDs start at 500 or 1000 on most Unix type systems,
leaving those below it for system users like this Fossil daemon owner.
Since it’s typical for these to start at 0 and go upward, we started at
500 and went *down* one instead to reduce the chance of a conflict to as
close to zero as we can manage.

To change it to something else, say:

    $ make container-image DBFLAGS='--build-arg UID=501'

This is particularly useful if you’re putting your repository on a
separate volume since the IDs “leak†out into the host environment via
file permissions. You may therefore wish them to mean something on both
sides of the container barrier rather than have “499†appear on the host
in “`ls -l`†output.


### 5.3 <a id="cengine"></a>Container Engine

Although the Fossil container build system defaults to Docker, we allow
for use of any OCI container system that implements the same interfaces.
We go into more details about this [below](#light), but
for now, it suffices to point out that you can switch to Podman while
using our `Makefile` convenience targets unchanged by saying:

    $ make CENGINE=podman container-run


### 5.4 <a id="config"></a>Fossil Configuration Options

You can use this same mechanism to enable non-default Fossil
configuration options in your build. For instance, to turn on
the JSON API and the TH1 docs extension:

    $ make container-image \
      DBFLAGS='--build-arg FSLCFG="--json --with-th1-docs"'

If you also wanted [the Tcl evaluation extension](./th1.md#tclEval),
that brings us to [the next point](#run).


### 5.5 <a id="run"></a>Elaborating the Run Layer

If you want a basic shell environment for temporary debugging of the
running container, that’s easily added. Simply change this line in the
`Dockerfile`…

    FROM scratch AS run

…to this:

    FROM busybox AS run

Rebuild and redeploy to give your Fossil container a [BusyBox]-based
shell environment that you can get into via:

    $ docker exec -it -u fossil $(make container-version) sh

That command assumes you built it via “`make container`†and are
therefore using its versioning scheme.

You will likely want to remove the `PATH` override in the “RUN†stage
when doing this since it’s written for the case where everything is in
`/bin`, and that will no longer be the case with a more full-featured
“`run`†layer. As long as the parent layer’s `PATH` value contains
`/bin`, delegating to it is more likely the correct thing.

Another useful case to consider is that you’ve installed a [server
extension](./serverext.wiki) and you need an interpreter for that
script. The first option above won’t work except in the unlikely case that
it’s written for one of the bare-bones script interpreters that BusyBox
ships.(^[BusyBox]’s `/bin/sh` is based on the old 4.4BSD Lite Almquist
shell, implementing little more than what POSIX specified in 1989, plus
equally stripped-down versions of `awk` and `sed`.)

Let’s say the extension is written in Python. Because this is one of the
most popular programming languages in the world, we have many options
for achieving this. For instance, there is a whole class of
“[distroless]†images that will do this efficiently by changing
“`STAGE 2`†in the `Dockefile` to this:

    ## ---------------------------------------------------------------------
    ## STAGE 2: Pare that back to the bare essentials, plus Python.
    ## ---------------------------------------------------------------------
    FROM cgr.dev/chainguard/python:latest
    USER root
    ARG UID=499
    ENV PATH "/sbin:/usr/sbin:/bin:/usr/bin"
    COPY --from=builder /tmp/fossil /bin/
    COPY --from=builder /bin/busybox.static /bin/busybox
    RUN [ "/bin/busybox", "--install", "/bin" ]
    RUN set -x                                                              \
        && echo "fossil:x:${UID}:${UID}:User:/museum:/false" >> /etc/passwd \
        && echo "fossil:x:${UID}:fossil"                     >> /etc/group  \
        && install -d -m 700 -o fossil -g fossil log museum

You will also have to add `busybox-static` to the APK package list in
STAGE 1 for the `RUN` script at the end of that stage to work, since the
[Chainguard Python image][cgimgs] lacks a shell, on purpose. The need to
install root-level binaries is why we change `USER` temporarily here.

Build it and test that it works like so:

    $ make container-run &&
      docker exec -i $(make container-version) python --version 
    3.11.2

The compensation for the hassle of using Chainguard over something more
general purpose like changing the `run` layer to Alpine and then adding
a “`apk add python`†command to the `Dockerfile`
is huge: we no longer leave a package manager sitting around inside the
container, waiting for some malefactor to figure out how to abuse it.

Beware that there’s a limit to this über-jail’s ability to save you when
you go and provide a more capable runtime layer like this. The container
layer should stop an attacker from accessing any files out on the host
that you haven’t explicitly mounted into the container’s namespace, but
it can’t stop them from making outbound network connections or modifying
the repo DB inside the container.

[cgimgs]:     https://github.com/chainguard-images/images/tree/main/images
[distroless]: https://www.chainguard.dev/unchained/minimal-container-images-towards-a-more-secure-future
[MTA]:        https://en.wikipedia.org/wiki/Message_transfer_agent


### 5.6 <a id="alerts"></a>Email Alerts

The nature of our single static binary container precludes two of the
options for [sending email alerts](./alerts.md) from Fossil:

*   pipe to a command
*   SMTP relay host

There is no `/usr/sbin/sendmail` inside the container, and the container
cannot connect out to a TCP service on the host by default.

While it is possible to get around the first lack by [elaborating the
run layer](#run), to inject a full-blown Sendmail setup into the
container would go against the whole idea of containerization.
Forwarding an SMTP relay port into the container isn’t nearly as bad,
but it’s still bending the intent behind containers out of shape.

A far better option in this case is the “store emails in databaseâ€
method since the containerized Fossil binary knows perfectly well how to
write SQLite DB files without relying on any external code. Using the
paths in the configuration recommended above, the database path should
be set to something like `/museum/mail.db`. This, along with the use of
[bind mounts](#bind-mount) means you can have a process running outside
the container that passes the emails along to the host-side MTA.

The included [`email-sender.tcl`](/file/tools/email-sender.tcl) script
works reasonably well for this, though in my own usage, I had to make
two changes to it:

1.  The shebang line at the top has to be `#!/usr/bin/tclsh` on my server.
2.  I parameterized the `DBFILE` variable at the top thus:

        set DBFILE [lindex $argv 0]

I then wanted a way to start this Tcl script on startup and keep it
running, which made me reach for systemd. My server is set to allow user
services to run at boot(^â€Desktop†class Linuxes tend to disable that by
default under the theory that you don’t want those services to run until
you’ve logged into the GUI as that user. If you find yourself running
into this, [enable linger
mode](https://www.freedesktop.org/software/systemd/man/loginctl.html).)
so I was able to create a unit file called
`~/.local/share/systemd/user/alert-sender@.service` with these contents:

    [Unit]
    Description=Fossil email alert sender for %I

    [Service]
    WorkingDirectory=/home/fossil/museum
    ExecStart=/home/fossil/bin/alert-sender %I/mail.db
    Restart=always
    RestartSec=3

    [Install]
    WantedBy=default.target

I was then able to enable email alert forwarding for select repositories
after configuring them per [the docs](./alerts.md) by saying:

    $ systemctl --user daemon-reload
    $ systemctl --user enable alert-sender@myproject
    $ systemctl --user start  alert-sender@myproject

Because this is a parameterized script and we’ve set our repository
paths predictably, you can do this for as many repositories as you need
to by passing their names after the “`@`†sign in the commands above.


## 6. <a id="light"></a>Lightweight Alternatives to Docker

Those afflicted with sticker shock at seeing the size of a [Docker
Desktop][DD] installation — 1.65 GB here — might’ve immediately
“noped†out of the whole concept of containers. The first thing to
realize is that when it comes to actually serving simple containers like
the ones shown above is that [Docker Engine][DE] suffices, at about a
quarter of the size.

Yet on a small server — say, a $4/month ten gig Digital Ocean droplet —
that’s still a big chunk of your storage budget. It takes ~60:1 overhead
merely to run a Fossil server container? Once again, I wouldn’t
blame you if you noped right on out of here, but if you will be patient,
you will find that there are ways to run Fossil inside a container even
on entry-level cloud VPSes. These are well-suited to running Fossil; you
don’t have to resort to [raw Fossil service][srv] to succeed,
leaving the benefits of containerization to those with bigger budgets.

For the sake of simple examples in this section, we’ll assume you’re
integrating Fossil into a larger web site, such as with our [Debian +
nginx + TLS][DNT] plan. This is why all of the examples below create
the container with this option:

    --publish 127.0.0.1:9999:8080

The assumption is that there’s a reverse proxy running somewhere that
redirects public web hits to localhost port 9999, which in turn goes to
port 8080 inside the container.  This use of port
publishing effectively replaces the use of the
“`fossil server --localhost`†option.

For the nginx case, you need to add `--scgi` to these commands, and you
might also need to specify `--baseurl`.

Containers are a fine addition to such a scheme as they isolate the
Fossil sections of the site from the rest of the back-end resources,
thus greatly reducing the chance that they’ll ever be used to break into
the host as a whole.

(If you wanted to be double-safe, you could put the web server into
another container, restricting it to reading from the static web
site directory and connecting across localhost to back-end dynamic
content servers such as Fossil. That’s way outside the scope of this
document, but you can find ready advice for that elsewhere. Seeing how
we do this with Fossil should help you bridge the gap in extending
this idea to the rest of your site.)

[DD]:  https://www.docker.com/products/docker-desktop/
[DE]:  https://docs.docker.com/engine/
[DNT]: ./server/debian/nginx.md
[srv]: ./server/


### 6.1 <a id="nerdctl" name="containerd"></a>Stripping Docker Engine Down

The core of Docker Engine is its [`containerd`][ctrd] daemon and the
[`runc`][runc] container runtime. Add to this the out-of-core CLI program
[`nerdctl`][nerdctl] and you have enough of the engine to run Fossil
containers. The big things you’re missing are:

*   **BuildKit**: The container build engine, which doesn’t matter if
    you’re building elsewhere and shipping the images to the target.
    A good example is using a container registry as an
    intermediary between the build and deployment hosts.

*   **SwarmKit**: A powerful yet simple orchestrator for Docker that you
    probably aren’t using with Fossil anyway.

In exchange, you get a runtime that’s about half the size of Docker
Engine. The commands are essentially the same as above, but you say
“`nerdctl`†instead of “`docker`â€. You might alias one to the other,
because you’re still going to be using Docker to build and ship your
container images.

[ctrd]:    https://containerd.io/
[nerdctl]: https://github.com/containerd/nerdctl
[runc]:    https://github.com/opencontainers/runc


### 6.2 <a id="podman"></a>Podman

A lighter-weight [rootless][rl] [drop-in replacement][whatis] that
doesn’t give up the image builder is [Podman]. Initially created by
Red Hat and thus popular on that family of OSes, it will run on
any flavor of Linux. It can even be made to run [on macOS via Homebrew][pmmac]
or [on Windows via WSL2][pmwin].

On Ubuntu 22.04, the installation size is about 38&nbsp;MiB, roughly a
tenth the size of Docker Engine.

For our purposes here, the only thing that changes relative to the
examples at the top of this document are the initial command:

    $ podman build -t fossil .
    $ podman run --name fossil -p 9999:8080/tcp fossil

Your Linux package repo may have a `podman-docker` package which
provides a “`docker`†script that calls “`podman`†for you, eliminating
even the command name difference. With that installed, the `make`
commands above will work with Podman as-is.

The only difference that matters here is that Podman doesn’t have the
same [default Linux kernel capability set](#caps) as Docker, which
affects the `--cap-drop` flags recommended above to:

    $ podman create \
      --name fossil \
      --cap-drop CHOWN \
      --cap-drop FSETID \
      --cap-drop KILL \
      --cap-drop NET_BIND_SERVICE \
      --cap-drop SETFCAP \
      --cap-drop SETPCAP \
      --publish 127.0.0.1:9999:8080 \
      localhost/fossil
    $ podman start fossil

[pmmac]:  https://podman.io/getting-started/installation.html#macos
[pmwin]:  https://github.com/containers/podman/blob/main/docs/tutorials/podman-for-windows.md
[Podman]: https://podman.io/
[rl]:     https://github.com/containers/podman/blob/main/docs/tutorials/rootless_tutorial.md
[whatis]: https://podman.io/whatis.html


### 6.3 <a id="nspawn"></a>`systemd-container`

If even the Podman stack is too big for you, the next-best option I’m
aware of is the `systemd-container` infrastructure on modern Linuxes,
available since version 239 or so.  Its runtime tooling requires only
about 1.4 MiB of disk space:

    $ sudo apt install systemd-container btrfs-tools

That command assumes the primary test environment for
this guide, Ubuntu 22.04 LTS with `systemd` 249.  For best
results, `/var/lib/machines` should be a btrfs volume, because
[`$REASONS`][mcfad]. For CentOS Stream 9 and other Red Hattish
systems, you will have to make several adjustments, which we’ve
collected [below](#nspawn-centos) to keep these examples clear.

We’ll assume your Fossil repository stores something called
“`myproject`†within `~/museum/myproject/repo.fossil`, named according
to the reasons given [above](#repo-inside). We’ll make consistent use of
this naming scheme in the examples below so that you will be able to
replace the “`myproject`†element of the various file and path names.

If you use [the stock `Dockerfile`][DF] to generate your
base image, `nspawn` won’t recognize it as containing an OS unless you
change the “`FROM scratch AS os`†line at the top of the second stage
to something like this:

    FROM gcr.io/distroless/static-debian11 AS os

Using that as a base image provides all the files `nspawn` checks for to
determine whether the container is sufficiently close to a Linux VM for
the following step to proceed:

    $ make container
    $ docker container export $(make container-version) |
      machinectl import-tar - myproject

Next, create `/etc/systemd/nspawn/myproject.nspawn`:

----

    [Exec]
    WorkingDirectory=/
    Parameters=bin/fossil server                \
        --baseurl https://example.com/myproject \
        --create                                \
        --jsmode bundled                        \
        --localhost                             \
        --port 9000                             \
        --scgi                                  \
        --user admin                            \
        museum/repo.fossil
    DropCapability=          \
        CAP_AUDIT_WRITE      \
        CAP_CHOWN            \
        CAP_FSETID           \
        CAP_KILL             \
        CAP_MKNOD            \
        CAP_NET_BIND_SERVICE \
        CAP_NET_RAW          \
        CAP_SETFCAP          \
        CAP_SETPCAP
    ProcessTwo=yes
    LinkJournal=no
    Timezone=no

    [Files]
    Bind=/home/fossil/museum/myproject:/museum

    [Network]
    VirtualEthernet=no

----

If you recognize most of that from the `Dockerfile` discussion above,
congratulations, you’ve been paying attention. The rest should also
be clear from context.

Some of this is expected to vary:

*   The references to `example.com` and `myproject` are stand-ins for
    your actual web site and repository name.

*   The command given in the `Parameters` directive assumes you’re
    setting up [SCGI proxying via nginx][DNT], but with adjustment,
    it’ll work with the other repository service methods we’ve
    [documented][srv].

*   The path in the host-side part of the `Bind` value must point at the
    directory containing the `repo.fossil` file referenced in said
    command so that `/museum/repo.fossil` refers to your repo out
    on the host for the reasons given [above](#bind-mount).

That being done, we also need a generic `systemd` unit file called
`/etc/systemd/system/fossil@.service`, containing:

----

    [Unit]
    Description=Fossil %i Repo Service
    Wants=modprobe@tun.service modprobe@loop.service
    After=network.target systemd-resolved.service modprobe@tun.service modprobe@loop.service

    [Service]
    ExecStart=systemd-nspawn --settings=override --read-only --machine=%i bin/fossil

    [Install]
    WantedBy=multi-user.target

----

You shouldn’t have to change any of this because we’ve given the
`--setting=override` flag, meaning any setting in the nspawn file
overrides the setting passed to `systemd-nspawn`.  This arrangement
not only keeps the unit file simple, it allows multiple services to
share the base configuration, varying on a per-repo level through
adjustments to their individual `*.nspawn` files.

You may then start the service in the normal way:

    $ sudo systemctl enable fossil@myproject
    $ sudo systemctl start  fossil@myproject

You should then find it running on localhost port 9000 per the nspawn
configuration file above, suitable for proxying Fossil out to the
public using nginx via SCGI. If you aren’t using a front-end proxy
and want Fossil exposed to the world via HTTPS, you might say this instead in
the `*.nspawn` file:

    Parameters=bin/fossil server \
        --cert /path/to/cert.pem \
        --create                 \
        --jsmode bundled         \
        --port 443               \
        --user admin             \
        museum/repo.fossil

You would also need to un-drop the `CAP_NET_BIND_SERVICE` capability
to allow Fossil to bind to this low-numbered port.

We use the `systemd` template file feature to allow multiple Fossil
servers running on a single machine, each on a different TCP port,
as when proxying them out as subdirectories of a larger site.
To add another project, you must first clone the base “machine†layer:

    $ sudo machinectl clone myproject otherthing

That will not only create a clone of `/var/lib/machines/myproject`
as `../otherthing`, it will create a matching `otherthing.nspawn` file for you
as a copy of the first one.  Adjust its contents to suit, then enable
and start it as above.

[mcfad]: https://www.freedesktop.org/software/systemd/man/machinectl.html#Files%20and%20Directories


### 6.3.1 <a id="nspawn-rhel"></a>Getting It Working on a RHEL Clone

The biggest difference between doing this on OSes like CentOS versus
Ubuntu is that RHEL (thus also its clones) doesn’t ship btrfs in
its kernel, thus ships with no package repositories containing `mkfs.btrfs`, which
[`machinectl`][mctl] depends on for achieving its various purposes.

Fortunately, there are workarounds.

First, the `apt install` command above becomes:

    $ sudo dnf install systemd-container

Second, you have to hack around the lack of `machinectl import-tar`:

    $ rootfs=/var/lib/machines/fossil
    $ sudo mkdir -p $rootfs
    $ docker container export fossil | sudo tar -xf -C $rootfs -

The parent directory path in the `rootfs` variable is important,
because although we aren’t able to use `machinectl` on such systems, the
`systemd-nspawn` developers assume you’re using them together; when you give
`--machine`, it assumes the `machinectl` directory scheme.  You could
instead use `--directory`, allowing you to store the rootfs wherever
you like, but why make things difficult?  It’s a perfectly sensible
default, consistent with the [LHS] rules.

The final element &mdash; the machine name &mdash; can be anything
you like so long as it matches the nspawn file’s base name.

Finally, since you can’t use `machinectl clone`, you have to make
a wasteful copy of `/var/lib/machines/myproject` when standing up
multiple Fossil repo services on a single machine.  (This is one
of the reasons `machinectl` depends on `btrfs`: cheap copy-on-write
subvolumes.)  Because we give the `--read-only` flag, you can simply
`cp -r` one machine to a new name rather than go through the
export-and-import dance you used to create the first one.

[LHS]:  https://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html
[mctl]: https://www.freedesktop.org/software/systemd/man/machinectl.html


### 6.3.2 <a id="nspawn-weaknesses"></a>What Am I Missing Out On?

For all the runtime size savings in this method, you may be wondering
what you’re missing out on relative to Podman, which takes up
roughly 27× more disk space.  Short answer: lots.  Long answer:

1.  **Build system.**  You’ll have to build and test your containers
    some other way.  This method is only suitable for running them
    once they’re built.

2.  **Orchestration.**  All of the higher-level things like
    “compose†files, Docker Swarm mode, and Kubernetes are
    unavailable to you at this level.  You can run multiple
    instances of Fossil, but on a single machine only and with a
    static configuration.

3.  **Image layer sharing.**  When you update an image using one of the
    above methods, Docker and Podman are smart enough to copy only
    changed layers.  Furthermore, when you base multiple containers
    on a single image, they don’t make copies of the base layers;
    they can share them, because base layers are immutable, thus
    cannot cross-contaminate.

    Because we use `systemd-nspawn --read-only`, we get *some*
    of this benefit, particularly when using `machinectl` with
    `/var/lib/machines` as a btrfs volume.  Even so, the disk space
    and network I/O optimizations go deeper in the Docker and Podman
    worlds.

4.  **Tooling.** Hand-creating and modifying those `systemd`
    files sucks compared to “`podman container create ...`† This
    is but one of many affordances you will find in the runtimes
    aimed at daily-use devops warriors.

5.  **Network virtualization.** In the scheme above, we turn off the
    `systemd` private networking support because in its default mode, it
    wants to hide containerized services entirely. While there are
    [ways][ndcmp] to expose Fossil’s single network service port under
    that scheme, it adds a lot of administration complexity. In the
    big-boy container runtimes, `docker create --publish` fixes all this
    up in a single option, whereas `systemd-nspawn --port` does
    approximately *none* of that despite the command’s superficial
    similarity.

    From a purely functional point of view, this isn’t a huge problem if
    you consider the inbound service direction only, being external
    connections to the Fossil service we’re providing. Since we do want
    this Fossil service to be exposed — else why are we running it? — we
    get all the control we need via `fossil server --localhost` and
    similar options.

    The complexity of the `systemd` networking infrastructure’s
    interactions with containers make more sense when you consider the
    outbound path.  Consider what happens if you enable Fossil’s
    optional TH1 docs feature plus its Tcl evaluation feature. That
    would enable anyone with the rights to commit to your repository the
    ability to make arbitrary network connections on the Fossil host.
    Then, let us say you have a client-server DBMS server on that same
    host, bound to localhost for private use by other services on the
    machine. Now that DBMS is open to access by a rogue Fossil committer
    because the host’s loopback interface is mapped directly into the
    container’s network namespace.

    Proper network virtualization would protect you in this instance.

This author expects that the set of considerations is broader than
presented here, but that it suffices to make our case as it is: if you
can afford the space of Podman or Docker, we strongly recommend using
either of them over the much lower-level `systemd-container`
infrastructure. You’re getting a considerable amount of value for the
higher runtime cost; it isn’t pointless overhead.

(Incidentally, these are essentially the same reasons why we no longer
talk about the `crun` tool underpinning Podman in this document. It’s
even more limited than `nspawn`, making it even more difficult to administer while
providing no runtime size advantage. The `runc` tool underpinning
Docker is even worse on this score, being scarcely easier to use than
`crun` while having a much larger footprint.)

[ndcmp]:  https://wiki.archlinux.org/title/systemd-networkd#Usage_with_containers


### 6.3.3 <a id="nspawn-assumptions"></a>Violated Assumptions

The `systemd-container` infrastructure has a bunch of hard-coded
assumptions baked into it.  We papered over these problems above,
but if you’re using these tools for other purposes on the machine
you’re serving Fossil from, you may need to know which assumptions
our container violates and the resulting consequences.

Some of it we discussed above already, but there’s one big class of
problems we haven’t covered yet. It stems from the fact that our stock
container starts a single static executable inside a bare-bones container
rather than “boot†an OS image. That causes a bunch of commands to fail:

*   **`machinectl poweroff`** will fail because the container
    isn’t running dbus.

*   **`machinectl start`** will try to find an `/sbin/init`
    program in the rootfs, which we haven’t got.  We could
    rename `/bin/fossil` to `/sbin/init` and then hack
    the chroot scheme to match, but ick.  (This, incidentally,
    is why we set `ProcessTwo=yes` above even though Fossil is
    perfectly capable of running as PID 1, a fact we depend on
    in the other methods above.)

*   **`machinectl shell`** will fail because there is no login
    daemon running, which we purposefully avoided adding by
    creating a “`FROM scratch`†container. (If you need a
    shell, say: `sudo systemd-nspawn --machine=myproject /bin/sh`)

*   **`machinectl status`** won’t give you the container logs
    because we disabled the shared journal, which was in turn
    necessary because we don’t run `systemd` *inside* the
    container, just outside.

If these are problems for you, you may wish to build a
fatter container using `debootstrap` or similar. ([External
tutorial][medtut].)

[medtut]: https://medium.com/@huljar/setting-up-containers-with-systemd-nspawn-b719cff0fb8d

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
Added www/contribute.wiki.
































































































































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<title>Contributing To Fossil</title>

Fossil users are encouraged to contribute enhancements back to the
project.  This note outlines some of the procedures for making
useful contributions.

<h2>1.0 Contributor Agreement</h2>

In order to accept non-trivial contributions, we <u>must</u> have a
[./copyright-release.pdf | Contributor Agreement (PDF)]
(or [./copyright-release.html | as HTML]) on file for you.  We require
this in order to maintain clear title to the Fossil code and prevent
the introduction of code with incompatible licenses or other entanglements
that might cause legal problems for Fossil users.  Many
lawyer-rich organizations require this as a precondition to using
Fossil.

If you do not wish to submit a Contributor Agreement, we would still
welcome your suggestions and example code, but we will not use your code
directly: we will be forced to re-implement your changes from scratch, which
might take longer.

We've made exceptions for "trivial" changes in the past, but the
definition of that term is up to the project leader.

<h2>2.0 Submitting Patches</h2>

Suggested changes or bug fixes can be submitted by creating a patch
against the current source tree:

<pre>fossil diff -i > my-change.patch</pre>

Alternatively, you can create a binary patch:

<pre>fossil patch create my-change.db</pre>

Post patches to
[https://fossil-scm.org/forum | the forum] or email them to
<a href="mailto:drh@sqlite.org">drh@sqlite.org</a>.  Be sure to
describe in detail what the patch does and which version of Fossil
it is written against. It's best to make patches against tip-of-trunk
rather than against past releases.

If your change is more complicated than a patch can properly encode, you
may submit [/help?cmd=bundle | a Fossil bundle] instead. Unlike patches,
bundles can contain multiple commits, check-in comments, file renames,
file deletions, branching decisions, and more which <tt>patch(1)</tt>
files cannot. It's best to make a bundle of a new branch so the change
can be integrated, tested, enhanced, and merged down to trunk in a
controlled fashion.

A contributor agreement is not strictly necessary to submit a patch or bundle,
but without a contributor agreement on file, your contribution will be
used for reference only: it will not be applied to the code.  This
may delay acceptance of your contribution.

Your contribution might not be accepted even if you do have
a contributor agreement on file.  Please do not take this personally
or as an affront to your coding ability.  Sometimes contributions are rejected
because they seem to be taking the project in a direction that the
architect does not want to go.  In other cases, there might be an alternative
implementation of the same feature being prepared separately.

<h2>3.0 Check-in Privileges</h2>

Check-in privileges are granted on a case-by-case basis.   Your chances
of getting check-in privileges are much improved if you have a history
of submitting quality patches and/or making thoughtful posts on
[https://fossil-scm.org/forum | the forum].
A signed contributor agreement is, of course, a prerequisite for check-in
privileges.</p>

Contributors are asked to make all non-trivial changes on a branch.  The
Fossil Architect (Richard Hipp) will merge changes onto the trunk.</p>

Contributors are required to follow the
[./checkin.wiki | pre-checkin checklist] prior to every check-in to
the Fossil self-hosting repository.  This checklist is short and succinct
and should only require a few seconds to follow.  Contributors
should print out a copy of the pre-checkin checklist and keep
it on a note card beside their workstations for quick reference.

Contributors should review the
[./style.wiki | Coding Style Guidelines] and mimic the coding style
used through the rest of the Fossil source code.  Your code should
blend in.  A third-party reader should be unable to distinguish your
code from any other code in the source corpus.

<h2>4.0 Testing</h2>

Fossil's [../test/release-checklist.wiki | release checklist] is of
primary benefit to the project leader, followed by him at release time,
but contributors are encouraged to run through its steps when making
major changes, since if the change doesn't pass this checklist, it won't
be included in the next release.

<h2>5.0 UI and Documentation Language</h2>

The Fossil project uses American English in its web interface and
documentation. Until there is some provision for translating the UI and
docs into other languages and dialects, we ask that you do not commit
changes that conflict with this.

We aren't opposed to such a project, but it would be a huge amount of
work, which no one's stepped up to do yet. Not only is each individual
translation a large ongoing job its own right, there is no
infrastructure for it yet, so the first few translations will be harder
than any future translation built on that infrastructure.

More immediately, we're likely to reject, revert, or rework commits that
use other English dialects. One example that comes up occasionally is
"artefact" versus "artifact." The UI and docs use the American English
spelling pervasively, so you have poor options if you insist on
"artefact:"

  *  attempt to slip one-off changes by your peers
  *  attempt to change all American English usages to Commonwealth English
  *  make the Fossil UI and docs translatable, then contribute a
     Commonwealth English translation

Only the latter is likely to succeed.

<h2>6.0 See Also</h2>

  *  [./build.wiki | How To Compile And Install Fossil]
  *  [./makefile.wiki | The Fossil Build Process]
  *  [./tech_overview.wiki | A Technical Overview of Fossil]
  *  [./adding_code.wiki | Adding Features To Fossil]
Changes to www/copyright-release.html.
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<h1 align="center">
Assignment of Copyright for<br>
Contributions To The Fossil SCM
Fossil SCM Contributor Agreement
</h1>

<p>
This agreement applies to your contribution of material to the
Fossil Software Configuration Management System ("Fossil") that is
This Agreement is made between Hipp, Wyrick &amp; Company, Inc., a
managed by Hipp, Wyrick &amp; Company, Inc. ("Hwaci") and
Georgia corporation with headquarters at 6200 Maple Cove Lane, Charlotte, NC,
(hereafter "Hwaci")
sets out the intellectual property rights you grant to Hwaci in the
and <font color="blue">NAME AND ADDRESS OF PROGRAMMER</font> (hereafter
"Programmer").
contributed material.
</p>

<p>For valuable consideration, receipt and sufficiency of which are hereby
acknowledged, Programmer and Hwaci agree as follows:
The terms "contribution" and "contributed material" mean any source code,
object code, patch, tool, sample, graphic, specification, manual,
documentation, or any other material posted, submitted, or uploaded by
you to the Fossil project.
 The term "you" means the person identified
</p>
and signing at the bottom of this document.  If your contribution
is on behalf of a company, the term "you" also means the company
identified in the signature area below.

<ol>
<li><p>
With respect to any worldwide copyrights, or copyright applications and
registrations, in your contribution:
<ul>
Programmer does hereby sell, assign, and transfer to Hwaci, its successors
and assigns, the entire right, title and interest in and to the copyright
<li> You hereby assign to Hwaci joint ownership, and to the extent that
     such assignment is or becomes invalid, ineffective or unenforceable,
in Fossil Software Configuration Management System (hereafter "Fossil")
or any portions thereof whether created before or after this agreement
and any registrations and copyright applications relating thereto and any
renewals and extensions thereof, and in and to all works based upon,
derived from, or incorporating Fossil, and in and to all income,
royalties, damages, claims and payments now or hereafter due or payable 
with respect thereto, and in and to all causes of action, either in law 
or in equity for past, present, or future infringement based on the
copyrights, and in and to all rights corresponding to the foregoing
throughout the world.
     you hereby grant to Hwaci a perpetual, irrevocable, non-exclusive,
     worldwide, no-charge, royalty-free, unrestricted license to exercise
     all rights under those copyrights, including the right to sublicense.
<li> You agree that both you and Hwaci can do all things in relation to your
     contribution as if each of us were the sole owners, and if one of us
     makes a derivative work of your contribution, the one who makes
     (or has made) the derivative work will be the sole owner of that
     derivative work.
<li> You agree that you will not assert any moral rights in your
     contribution against Hwaci, Hwaci's licensees or transferees, or
     any other user or consumer of your contribution.
<li> You agree that Hwaci may register a copyright in your contribution and
     exercise all ownership rights associated with it.
<li> You agree that neither you nor Hwaci has any duty to consult with,
     obtain the consent of, or pay or render an accounting to the other
     for any use or distribution of your contribution.
</ul>

<li><p>
With respect to any patents you own, or that you can license without payment
to any third party, and which are relevant to your contribution, you hereby
grant to Hwaci a perpetual, irrevocable, non-exclusive, worldwide, no-charge,
royalty-free license to
make, have made, use, sell, offer to sell, import, and otherwise
transfer your contribution in whole or in part, alone or in
combination with or included in any product, work or materials arising
out of the Fossil project, and to sublicense these same rights.

<li><p>
Except as set out above, you keep all right, title, and interest in your
contribution.  The rights that you grant to Hwaci under this agreement
are effective on the date that you first submitted your contribution to the
Fossil project, even if your submission took place before the date that
you sign this agreement.

<li><p>
Programmer hereby represents and
You represent and warrant the following:
warrants to Licensee that Programmer is the owner of those portions of
the Fossil software developed and produced by Programmer or
otherwise has the right to grant to Hwaci the rights set forth in
this Agreement.
<ul>
<li> Your contribution is an original work and that you can legally
     grant the rights set out in this agreement.
<li> Your contribution does not, to the best of your knowledge and belief,
     violate any third party's copyrights, trademarks, patents,
     or other intellectual property rights.
<li> You are authorized to sign this agreement on behalf of your
     company (if applicable).
</ul>
</ol>

<p>
In witness whereof, the parties have executed this Agreement, 
effective this <font color="blue">YYYY-MM-DD</font>
<p>By filling in the following information and signing your name,
you agree to be bound by all of the terms
set forth in this agreement.  Please print clearly.</p>

<p><table width="80%" border="1" cellpadding="0" cellspacing="0" align="center">
<tr><td width="20%" valign="top">Your name &amp; email:</td><td width="80%">

    <!-- Replace this line with your name and email --> &nbsp;<p>&nbsp;
<p><table width="100%" border="0">
<tr><td valign="top">
HWACI<br>
By:<hr>
<p>&nbsp;</p>
Print Name:<hr>
<p>&nbsp;</p>
Title:<hr>

</td></tr>
<tr><td valign="top">Company name:<br>(if applicable)</td><td>

    <!-- Replace this line with your company name --> &nbsp;<p>&nbsp;

&nbsp;</td></tr>
<tr><td valign="top">Postal address:</td><td>

    <!-- Replace this line and the next line with your postal address -->
    <p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p>

<p>&nbsp;</p>
</td><td width="10%"></td>
<td valign="top">
</td></tr>
<tr><td valign="top">Signature:</td><td>&nbsp;<p>&nbsp;</td></tr>
PROGRAMMER<br>
By:<hr>
<p>&nbsp;</p>
Print Name:<hr>
<p>&nbsp;</p>
Title:<hr>
<p>&nbsp;</p>
<tr><td valign="top">Date:</td><td>&nbsp;<p>&nbsp;</td></tr>
</table>

<p>Send completed forms to:
<blockquote>
Hipp, Wyrick &amp; Company, Inc.<br>
6200 Maple Cove Lane<br>
Charlotte, NC 28269-1086<br>
USA
</p>
</td></tr></table>
Added www/copyright-release.pdf.

cannot compute difference between binary files

Added www/css-tricks.md.










































































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# Fossil CSS Tips and Tricks

Many aspects of Fossil's appearance can be customized by
[customizing the site skin](customskin.md). This document
details certain specific CSS tweaks which users have asked
about via the forums.

This is a "living document" - please feel free to suggest
additions via [the Fossil forum](https://fossil-scm.org/forum/).

This document is *not* an introduction to CSS - the web is
full of tutorials on that topic. It covers only the specifics
of customizing certain CSS-based behaviors in a Fossil UI. That said...

## Is it Really `!important`?

By and large, CSS's `!important` qualifier is not needed when
customizing Fossil's CSS. On occasion, however, particular styles may
be set directly on DOM elements when Fossil generates its HTML, and
such cases require the use of `!important` to override them.


<!-- ============================================================ -->
# Main UI CSS

## Number of Columns in `/dir` View

The width of columns on the [`/dir` page](/dir) is calculated
dynamically as the page is generated, to attempt to fit the widest
name in a given directory. The number of columns is determined
automatically by CSS. To modify the number of columns and/or the entry width:

```css
div.columns {
  columns: WIDTH COLUMN_COUNT !important;
  /* Examples:
    columns: 20ex 3 !important
    columns: auto auto !important
  */
}
/* The default rule uses div.columns, but it can also be selected using: */
div.columns.files { ... }
```

The `!important` qualifier is required here because the style values are dynamically
calculated and applied when the HTML is emitted.

The file list itself can be further customized via:

```css
div.columns > ul {
 ...
}
ul.browser {
 ...
}
```


<!-- ============================================================ -->
# Forum-specific CSS

## Limiting Display Length of Long Posts

Excessively long posts can make scrolling through threads problematic,
especially on mobile devices. The amount of a post which is visible can
be configured using:

```css
div.forumPostBody {
  max-height: 25em; /* change to the preferred maximum effective height */
  overflow: auto; /* tells the browser to add scrollbars as needed */
}
```
Added www/css/diff.md.
















































































































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Notes On Diff Formatting
========================

There are two main kinds of diff display for the web interface:
unified and side-by-side.  Both displays are implemented using
a &lt;table&gt;.  The unified diff is a 4-column table, and the
side-by-side diff is a 5-column table.  In a page like /info that
might show multiple file diffs, each file diff is in a separate
&lt;table&gt;.  For side-by-side diffs, a small amount of Javascript
code is used to resize the text columns so that they fill the screen
width and to keep horizontal scrollbars in sync.

For the unified diff, the basic structure
is like this:

> ~~~~
<table class='diff udiff'>
<tr>
  <td class='diffln difflnl'><pre>
     Line numbers for the left-hand file
  </pre></td>
  <td class='diffln difflnr'><pre>
     Line numbers for the right-hand file
  </pre></td>
  <td class='diffsep'><pre>
     Change marks.  "+" or "=" or nothing
  </pre></td>
  <td class='difftxt difftxtu'><pre>
     The text
  </pre></td>
</tr>
</table>
~~~~

The structure for a side-by-side diff follows the
same basic pattern, though with 5 columns instead of
4, and slightly different class names:

> ~~~~
<table class='diff splitdiff'>
<tr>
  <td class='diffln difflnl'><pre>
     Line numbers for the left-hand file
  </pre></td>
  <td class='difftxt difftxtl'><pre>
     The text for the left side
  </pre></td>
  <td class='diffsep'><pre>
     Change marks.  "+" or "=" or nothing
  </pre></td>
  <td class='diffln difflnr'><pre>
     Line numbers for the right-hand file
  </pre></td>
  <td class='difftxt difftxtr'><pre>
     The text on the right-hand side
  </pre></td>
</tr>
</table>
~~~~

The outer &lt;table&gt; always has class "diff".  The "diffu" class
is added for unified diffs and the "splitdiff" class is added for
side-by-side diffs.

All line-number columns have the "diffln" class.  They also always
have one of "difflnl" or "difflnr" depending on whether they hold
line numbers for the left or right files, respectively.

Text is always kept in a separate column so that it can be scraped
and copied by the user.  All text columns have the "difftxt" class.
One additional class "difftxtu", "difftxtl", or "difftxtr" is added
depending on if the text is for a unified diff, the left column of
a side-by-side diff, or the right column of a side-by-side diff.

The content of all columns is a single &lt;pre&gt; that contains the
appropriate diff-text for that column.  Scrolling is done on the
&lt;pre&gt; element.

Within text columns, highlighting is done with &lt;del&gt; and
&lt;ins&gt; markup.  All text on a line that contains an isert or
delete is surrounded by &lt;ins&gt;...&lt;/ins&gt; or
&lt;del&gt;..&lt;/del&gt;.  Within that line, specific characters
of text that specifically inserted deleted have an additional
layer of &lt;ins&gt; or &lt;del&gt; markup.  Thus CSS like the
following is appropriate:

> ~~~~
td.difftxt ins {
  background-color: #dafbe1;  /* Light green for the whole line */
  text-decoration: none;
}
td.difftxt ins > ins {
  background-color: #a0e4b2;  /* Dark green for specific characters that change */
  text-decoration: none;
}
~~~~

In a side-by-side diff, if an interior &lt;ins&gt; or &lt;del&gt; that mark
specific characters that change correspond to a delete/insert on the other
side, they they have the "edit" class tag.  (ex:  &lt;ins&nbsp;class='edit'&gt;
or &lt;del&nbsp;class='edit'&gt;).  Some skins choose to paint these "modified"
regions blue:

> ~~~~
td.difftxt ins > ins.edit {
  background-color: #c0c0ff;  /* Blue for "modified" text region */
  text-decoration: none;
}
~~~~

Line number text also has &lt;ins&gt; and &lt;del&gt; tags for lines which
are pure insert or pure delete.  But the tags do not nest for line numbers.
Added www/css/index.md.












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Cascading Style Sheet Notes
===========================

This is a collection of technical notes that document the design of
the Document Object Model (DOM) and corresponding Cascading Style Sheet (CSS)
attributes used for customing the look-and-feel of Fossil.  These notes
are of interest to people who want to customize the Fossil skin or
enhance the internal display logic.

This is a collection of documents that we hope will grow over time.

  *  [Diff styling](./diff.md)
Changes to www/custom_ticket.wiki.
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<nowiki>
<h1 align="center">Customizing The Ticket System</h1>
<p>
<title>Customizing The Ticket System</title>

<h2>Introduction</h2>

This guide will explain how to add the "assigned_to" and "submitted_by" fields
to the ticket system in Fossil, as well as making the system more useful.  You
must have "admin" access to the repository to implement these instructions.
</p>

<h2>First modify the TICKET table</h2><blockquote>
<p>
<h2>First modify the TICKET table</h2>

Click on the "Admin" menu, then "Tickets", then "Table".  After the other fields
and before the final ")", insert:
<pre>
  ,
  assigned_to TEXT,
  opened_by TEXT
</pre>

And "Apply Changes".  You have just added two more fields to the ticket
database!  NOTE: I won't tell you to "Apply Changes" after each step from here
on out.  Now, how do you use these fields?
</p>
</blockquote>

<h2>Next add assignees</h2><blockquote>
<p>
<h2>Next add assignees</h2>

Back to the "Tickets" admin page, and click "Common".  Add something like this:
<pre>
set assigned_choices {
  unassigned
  tom
  dick
  harriet
}
</pre>

Obviously, choose names corresponding to the logins on your system.  The
'unassigned' entry is important, as it prevents you from having a NULL in that
field (which causes problems later when editing).
</p>
</blockquote>

<h2>Now modify the 'new ticket' page</h2><blockquote>
<p>
<h2>Now modify the 'new ticket' page</h2>

Back to the "Tickets" admin page, and click "New Ticket Page".  This is a little
more tricky.  Edit the top part:
<pre>
  if {[info exists submit]} {
     set status Open
     set opened_by $login
	 set assigned_to "unassigned"
     submit_ticket
  }
</pre>

<verbatim>
if {[info exists submit]} {
  set status Open
  set opened_by $login
  set assigned_to "unassigned"
  submit_ticket
}
</verbatim>

Note the "set opened_by" bit -- that will automatically set the "opened_by"
field to the login name of the bug reporter.  Now, skip to the part with "EMail"
and modify it like so:
<pre>
&lt;th1>enable_output [expr { "$login" eq "anonymous"}]&lt;/th1>
&lt;tr>
&lt;td align="right">EMail:
&lt;input type="text" name="private_contact" value="$&lt;private_contact>" size="30">
&lt;/td>
&lt;td>&lt;u>Not publicly visible&lt;/u>. Used by developers to contact you with
questions.&lt;/td>
&lt;/tr>
&lt;th1>enable_output 1&lt;/th1>
</pre>

<verbatim>
<th1>enable_output expr { "$login" eq "anonymous"}</th1>
<tr>
<td align="right">
  EMail:
  <input type="text" name="private_contact" value="$<private_contact>" size="30">
</td>
<td>
  <u>Not publicly visible</u>. Used by developers to contact you with questions.
</td>
</tr>
<th1>enable_output 1</th1>
</verbatim>

This bit of code will get rid of the "email" field entry for logged-in users.
Since we know the user's information, we don't have to ask for it. NOTE: it
might be good to automatically scoop up the user's email and put it here. 
</p>
</blockquote>
might be good to automatically scoop up the user's email and put it here.

You might also want to enable people to actually assign the ticket to a specific
person during creation. For this to work, you need to add the code
for "assigned_to" as shown below under the heading "Modify the 'edit ticket' page".
This will give you an additional combobox where you can choose a person during
ticket creation.

<h2>Modify the 'view ticket' page</h2><blockquote>
<p>
<h2>Modify the 'view ticket' page</h2>

Look for the text "Contact:" (about halfway through).  Then insert these lines
after the closing tr tag and before the "enable_output" line:
<pre>

<verbatim>
<tr>
  &lt;td align="right">Assigned to:&lt;/td>&lt;td bgcolor="#d0d0d0">
  $&lt;assigned_to>
  &lt;/td>
  &lt;td align="right">Opened by:&lt;/td>&lt;td bgcolor="#d0d0d0">
  $&lt;opened_by>
  &lt;/td>
</pre>
  <td align="right">Assigned to:</td><td bgcolor="#d0d0d0">
    $<assigned_to>
  </td>
  <td align="right">Opened by:</td><td bgcolor="#d0d0d0">
    $<opened_by>
  </td>
</tr>
</verbatim>

This will add a row which displays these two fields, in the event the user has
"edit" capability.  
<a href="./caps/ref.html#w">ticket "edit" capability</a>.
</p>
</blockquote>

<h2>Modify the 'edit ticket' page</h2><blockquote>
<p>
<h2>Modify the 'edit ticket' page</h2>

Before the "Severity:" line, add this:
<pre>
&lt;tr>&lt;td align="right">Assigned to:&lt;/td>&lt;td>
&lt;th1>combobox assigned_to $assigned_choices 1&lt;/th1>
&lt;/td>&lt;/tr>
</pre>
That will give you a drop-down list of assignees.  Now, similar to the previous

<verbatim>
<tr>
  <td align="right">Assigned to:</td>
  <td>
      <th1>combobox assigned_to $assigned_choices 1</th1>
  </td>
</tr>
</verbatim>

That will give you a drop-down list of assignees. The first argument to the TH1
command 'combobox' is the database field which the combobox is associated to.
The next argument is the list of choices you want to show in the combobox (and
that you specified in the second step above.) The last argument should be 1 for
a true combobox (see the <a href="th1.md#combobox">TH1 documentation</a> for
details).

Now, similar to the previous
section, look for "Contact:" and add this:
<pre>
  &lt;tr>&lt;td align="right">Reported by:&lt;/td>&lt;td>
  &lt;input type="text" name="opened_by" size="40"

<verbatim>
<tr>
  <td align="right">Reported by:</td>
  <td>
    <input type="text" name="opened_by" size="40" value="$<opened_by>">
   value="$&lt;opened_by>">
  &lt;/td>&lt;/tr>
</pre>
</p>
  </td>
</tr>
</verbatim>
</blockquote>

<h2>What next?</h2><blockquote>
<p>
<h2>What next?</h2>

Now you can add custom reports which select based on the person to whom the
ticket is assigned.  For example, an "Assigned to me" report could be:
<pre>

<verbatim>
SELECT
  CASE WHEN status IN ('Open','Verified') THEN '#f2dcdc'
       WHEN status='Review' THEN '#e8e8e8'
       WHEN status='Fixed' THEN '#cfe8bd'
       WHEN status='Tested' THEN '#bde5d6'
       WHEN status='Deferred' THEN '#cacae5'
       ELSE '#c8c8c8' END AS 'bgcolor',
  substr(tkt_uuid,1,10) AS '#',
  datetime(tkt_mtime) AS 'mtime',
  type,
  status,
  subsystem,
  title
FROM ticket
WHERE assigned_to=user()
</pre>
</p>
</verbatim>
</blockquote>
</nowiki>
Added www/customgraph.md.




































































































































































































































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# Customizing the Timeline Graph

Beginning with version 1.33, Fossil gives users and skin authors significantly
more control over the look and feel of the timeline graph.

## <a id="basic-style"></a>Basic Style Options

Fossil includes several options for changing the graph's style without having
to delve into CSS. These can be found in the details.txt file of your skin or
under Admin/Skins/Details in the web UI.

*   **`timeline-arrowheads`**

    Set this to `0` to hide arrowheads on primary child lines.

*   **`timeline-circle-nodes`**

    Set this to `1` to make check-in nodes circular instead of square.

*   **`timeline-color-graph-lines`**

    Set this to `1` to colorize primary child lines.

*   **`white-foreground`**

    Set this to `1` if your skin uses white (or any light color) text.
    This tells Fossil to generate darker background colors for branches.


## <a id="adv-style"></a>Advanced Styling

If the above options aren't enough for you, it's time to get your hands dirty
with CSS. To get started, I recommend first copying all the [graph-related CSS
rules](#default-css) to your stylesheet. Then it's simply a matter of making
the necessary changes to achieve the look you want. So, next, let's look at the
various graph elements and what purpose they serve.

Each element used to construct the timeline graph falls into one of two
categories: visible elements and positioning elements. We'll start with the
latter, less obvious type.

## <a id="pos-elems"></a>Positioning Elements

These elements aren't intended to be seen. They're only used to help position
the graph and its visible elements.

*   <a id="tl-canvas"></a>**`.tl-canvas`**

    Set the left and right margins on this class to give the desired amount
    of space between the graph and its adjacent columns in the timeline.

    **Additional Classes**

    * `.sel`: See [`.tl-node`](#tl-node) for more information.

*   <a id="tl-rail"></a>**`.tl-rail`**

    Think of rails as invisible vertical lines on which check-in nodes are
    placed. The more simultaneous branches in a graph, the more rails required
    to draw it. Setting the `width` property on this class determines the
    maximum spacing between rails. This spacing is automatically reduced as
    the number of rails increases. If you change the `width` of `.tl-node`
    elements, you'll probably need to change this value, too.

*   <a id="tl-mergeoffset"></a>**`.tl-mergeoffset`**

    A merge line often runs vertically right beside a primary child line. This
    class's `width` property specifies the maximum spacing between the two.
    Setting this value to `0` will eliminate the vertical merge lines.
    Instead, the merge arrow will extend directly off the primary child line.
    As with rail spacing, this is also adjusted automatically as needed.

*   <a id="tl-nodemark"></a>**`.tl-nodemark`**

    In the timeline table, the second cell in each check-in row contains an
    invisible div with this class. These divs are used to determine the
    vertical position of the nodes. By setting the `margin-top` property,
    you can adjust this position.

## <a id="vis-elems"></a>Visible Elements

These are the elements you can actually see on the timeline graph: the nodes,
arrows, and lines. Each of these elements may also have additional classes
attached to them, depending on their context.

*   <a id="tl-node"></a>**`.tl-node`**

    A node exists for each check-in in the timeline.

    **Additional Classes**

    *   `.leaf`: Specifies that the check-in is a leaf (i.e. that it has no
        children in the same branch).

    *   `.merge`: Specifies that the check-in contains a merge.

    *   `.sel`: When the user clicks a node to designate it as the beginning
        of a diff, this class is added to both the node itself and the
        [`.tl-canvas`](#tl-canvas) element. The class is removed from both
        elements when the node is clicked again.

*   <a id="tl-arrow"></a>**`.tl-arrow`**

    Arrows point from parent nodes to their children. Technically, this
    class is just for the arrowhead. The rest of the arrow is composed
    of [`.tl-line`](#tl-line) elements.

    There are six additional classes that are used to distinguish the different
    types of arrows. However, only these combinations are valid:

    *   `.u`: Up arrow that points to a child from its primary parent.

    *   `.u.sm`: Smaller up arrow, used when there is limited space between
        parent and child nodes.

    *   `.merge.l` or `.merge.r`: Merge arrow pointing either to the left or
        right.

    *   `.warp`: A timewarped arrow (always points to the right), used when a
        misconfigured clock makes a check-in appear to have occurred before its
        parent ([example](https://www.sqlite.org/src/timeline?c=2010-09-29&nd)).

*   <a id="tl-line"></a>**`.tl-line`**

    Along with arrows, lines connect parent and child nodes. Line thickness is
    determined by the `width` property, regardless of whether the line is
    horizontal or vertical. You can also use borders to create special line
    styles. Here's a CSS snippet for making dotted merge lines:

        .tl-line.merge {
          width: 0;
          background: transparent;
          border: 0 dotted #000;
        }
        .tl-line.merge.h {
          border-top-width: 1px;
        }
        .tl-line.merge.v {
          border-left-width: 1px;
        }

    **Additional Classes**

    *   `.merge`: A merge line.

    *   `.h` or `.v`: Horizontal or vertical.

    *   `.warp`: A timewarped line.


## <a id="default-css"></a>Default Timeline Graph CSS

    .tl-canvas {
      margin: 0 6px 0 10px;
    }
    .tl-rail {
      width: 18px;
    }
    .tl-mergeoffset {
      width: 2px;
    }
    .tl-nodemark {
      margin-top: 5px;
    }
    .tl-node {
      width: 10px;
      height: 10px;
      border: 1px solid #000;
      background: #fff;
      cursor: pointer;
    }
    .tl-node.leaf:after {
      content: '';
      position: absolute;
      top: 3px;
      left: 3px;
      width: 4px;
      height: 4px;
      background: #000;
    }
    .tl-node.sel:after {
      content: '';
      position: absolute;
      top: 2px;
      left: 2px;
      width: 6px;
      height: 6px;
      background: red;
    }
    .tl-arrow {
      width: 0;
      height: 0;
      transform: scale(.999);
      border: 0 solid transparent;
    }
    .tl-arrow.u {
      margin-top: -1px;
      border-width: 0 3px;
      border-bottom: 7px solid #000;
    }
    .tl-arrow.u.sm {
      border-bottom: 5px solid #000;
    }
    .tl-line {
      background: #000;
      width: 2px;
    }
    .tl-arrow.merge {
      height: 1px;
      border-width: 2px 0;
    }
    .tl-arrow.merge.l {
      border-right: 3px solid #000;
    }
    .tl-arrow.merge.r {
      border-left: 3px solid #000;
    }
    .tl-line.merge {
      width: 1px;
    }
    .tl-arrow.warp {
      margin-left: 1px;
      border-width: 3px 0;
      border-left: 7px solid #600000;
    }
    .tl-line.warp {
      background: #600000;
    }
Added www/customskin.md.
























































































































































































































































































































































































































































































































































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# Skinning the Fossil Web Interface

The Fossil web interface comes with a pre-configured look and feel.  The default
look and feel works fine in many situations.  However, you may want to change
the look and feel (the "skin") of Fossil to better suite your own individual tastes.
This document provides background information to aid you in that task.

## <a id="builtin"></a>Built-in Skins

Fossil comes with [multiple built-in skins](/skins).  If the default skin does not
suite your tastes, perhaps one of the other built-in skins will work better.
If nothing else, the built-in skins can serve as examples or templates that
you can use to develop your own custom skin.

The sources to these built-ins can
be found in the Fossil source tree under the skins/ folder.  The 
[skins/](/dir?ci=trunk&name=skins)
folder contains a separate subfolder for each built-in skin, with each
subfolders holding at least these five files:

   * css.txt
   * details.txt
   * footer.txt
   * header.txt
   * js.txt

Try out the built-in skins by using the --skin option on the
[fossil ui](/help?cmd=ui) or [fossil server](/help?cmd=server) commands.

## <a id="sharing"></a>Sharing Skins

The skin of a repository is not part of the versioned state and does not
"push" or "pull" like checked-in files.  The skin is local to the
repository.  However, skins can be shared between repositories using
the [fossil config](/help?cmd=configuration) command.
The "fossil config push skin" command will send the local skin to a remote
repository and the "fossil config pull skin" command will import a skin
from a remote repository.  The "fossil config export skin FILENAME"
will export the skin for a repository into a file FILENAME.  This file
can then be imported into a different repository using the
"fossil config import FILENAME" command.  Unlike "push" and "pull",
the "export" and "import" commands are able to move skins between
repositories for different projects.  So, for example, if you have a
group of related repositories, you can develop a skin for one of them,
then get a consistent look across all the repositories by exporting
the skin from the first repository and importing into all the others.

The file generated by "fossil config export" could be checked into
one of your repositories and versioned, if desired.  This will not
automatically change the skin when looking backwards in time, but it
will provide an historical record of what the skin used to be and
allow the historical look of the repositories to be recreated if
necessary.

When cloning a repository, the skin of the new repository is initialized to
the skin of the repository from which it was cloned.

# Structure Of A Fossil Web Page

Every HTML page generated by Fossil has the same basic structure:

| Fossil-Generated HTML Header |
| Skin Header                  |
| Fossil-Generated Content     |
| Skin Footer                  |
| Fossil-Generated HTML Footer |

By default, Fossil starts every generated HTML page with this:

    <html>
    <head>
    <base href="...">
    <meta http-equiv="Content-Security-Policy" content="....">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>....</title>
    <link rel="stylesheet" href="..." type="text/css">
    </head>
    <body class="FEATURE">

Fossil used to require a static version of this in every skin’s Header
area, but over time, we have found good cause to generate multiple
elements at runtime.

One such is the `FEATURE` element, being either the top-level HTTP
request routing element (e.g. `doc`) or an aggregate feature class that
groups multiple routes under a single name. A prime example is `forum`,
which groups the `/forummain`, `/forumpost`, and `/forume2` routes,
allowing per-feature CSS. For instance, to style `<blockquote>` tags
specially for forum posts written in Markdown, leaving all other block
quotes alone, you could say:

    body.forum div.markdown blockquote {
      margin-left: 10px;
    }

You can [override this generated HTML header](#override) by including a
“`<body>`†tag somewhere in the Header area of the skin, but it is
almost always best to limit a custom skin’s Header section to something
like this:

<div class="sidebar" id="version-2.24">Prior to Fossil 2.24, we used
generic `<div>` elements to mark up these sections of the header, but we
switched to these semantic tag names to give browser accessibility
features more freedom to do intelligent things with the page content.
Those who made custom skins based on the old way of doing things will
need to track this change when upgrading, else the corresponding CSS
will mistarget the page header elements. Also, if you’re using Fossil’s
chat feature, failing to track this change will cause it to miscalculate
the message area size, resulting in double scrollbars. Simply diffing
your custom header in the skin editor against the stock version should
be sufficient to show what you need to change.</div>


    <header>
      ...
    </header>
    <nav class="mainmenu" title="Main Menu">
      ...
    </nav>
    <nav id="hbdrop" class="hbdrop" title="sitemap"></nav>

See the stock skins’ headers for ideas of what to put in place of the
ellipses.

The Fossil-generated Content section immediately follows this Header.
It will look like this:

    <div class="content">
      ... Fossil-generated content here ...
    </div>

After the Content is the custom Skin Footer section which should
follow this template:

    <footer>
      ... skin-specific stuff here ...
    </footer>

As with the `<header>` change called out above, this, too, is a breaking
change in Fossil 2.24.

Finally, Fossil always adds its own footer (unless overridden)
to close out the generated HTML:

    </body>
    </html>

## <a id="mainmenu"></a>Changing the Main Menu Contents

The actual text content of the skin’s main menu is not
part of the skin proper if you’re using one of the stock skins.
If you look at the Header section of the skin, you’ll find a
`<div class="mainmenu">` element whose contents are set by a short
[TH1](./th1.md) script from the contents of the **Main Menu** section of
the Setup → Configuration screen.

This feature allows the main menu contents to stay the same across
different skins, so you no longer have to reapply menu customizations
when trying different skins.

See the [`capexpr`](./th1.md#capexpr) section of the TH1 docs for help
on interpreting the default contents of this block.


## <a id="override"></a>Overriding the HTML Header and Footer

Notice that the `<html>`, `<head>`, and opening `<body>` 
elements at the beginning of the document,
and the closing `</body>` and `</html>` elements at the end are automatically
generated by Fossil.  This is recommended.

However, for maximum design flexibility, Fossil allows those elements to be
supplied as part of the configurable Skin Header and Skin Footer.
If the Skin Header contains the text "`<body`", then Fossil assumes that
the Skin Header and Skin Footer will handle all of the `<html>`,
`<head>`, and `<body>` text itself, and the Fossil-generated header and
footer will be blank.

When overriding the HTML Header in this way, you will probably want to use some
of the [TH1 variables documented below](#vars) such as `$stylesheet_url`
to avoid hand-writing code that Fossil can generate for you.

# Designing, Debugging, and Installing A Custom Skin

It is possible to develop a new skin from scratch.  But a better and easier
approach is to use one of the existing built-in skins as a baseline and
make incremental modifications, testing after each step, to obtain the
desired result.

The skin is controlled by five files:

<dl>
<dt><b>css.txt</b></dt>

<dd>The css.txt file is the text of the CSS for Fossil.
Fossil might add additional CSS elements after
the css.txt file, if it sees that the css.txt omits some
CSS components that Fossil needs.  But for the most part,
the content of the css.txt is the CSS for the page.</dd>

<dt><b>details.txt</b><dt>

<dd>The details.txt file is short list of settings that control
the look and feel, mostly of the timeline.  The default
details.txt file looks like this:

<pre>
pikchr-background:          ""
pikchr-fontscale:           ""
pikchr-foreground:          ""
pikchr-scale:               ""
timeline-arrowheads:        1
timeline-circle-nodes:      1
timeline-color-graph-lines: 1
white-foreground:           0
</pre>

The three "timeline-" settings in details.txt control the appearance
of certain aspects of the timeline graph.  The number on the
right is a boolean - "1" to activate the feature and "0" to
disable it.  The "white-foreground:" setting should be set to
"1" if the page color has light-color text on a darker background,
and "0" if the page has dark text on a light-colored background.

If the "pikchr-foreground" setting
is defined and is not an empty string then it specifies a
foreground color to use for [pikchr diagrams](./pikchr.md).  The
default pikchr foreground color is black, or white if the
"white-foreground" boolean is set.  The "pikchr-background"
settings does the same for the pikchr diagram background color.
If the "pikchr-fontscale" and "pikchr-scale" values are not
empty strings, then they should be floating point values (close
to 1.0) that specify relative scaling of the fonts in pikchr
diagrams and other elements of the diagrams, respectively.
</dd>

<dt><b>footer.txt</b> and <b>header.txt</b></dt>

<dd>The footer.txt and header.txt files contain the Skin Footer
and Skin Header respectively.  Of these, the Skin Header is
the most important, as it contains the markup used to generate
the banner and menu bar for each page.

Both the footer.txt and header.txt file are 
[processed using TH1](#headfoot) prior to being output as 
part of the overall web page.</dd>

<dt><b>js.txt</b></dt>

<dd>The js.txt file is optional.  It is intended to be javascript.
The complete text of this javascript might be inserted into
the Skin Footer, after being processed using TH1, using
code like the following in the "footer.txt" file:

<pre>
&lt;script nonce="$nonce"&gt;
  &lt;th1&gt;styleScript&lt;/th1&gt;
&lt;/script&gt;
</pre>

The js.txt file was originally used to insert javascript
that controls the hamburger menu in the default skin.  More
recently, the javascript for the hamburger menu was moved into
a separate built-in file.  Skins that use the hamburger menu
typically cause the javascript to be loaded by including the
following TH1 code in the "header.txt" file:

<pre>
&lt;th1&gt;builtin_request_js hbmenu.js&lt;/th1&gt;
</pre>

The difference between `styleScript` and `builtin_request_js`
is that the `styleScript` command interprets the file
using TH1 and injects the content directly into the output
stream, whereas the `builtin_request_js` command inserts the
Javascript verbatim and does so at some unspecified future time
down inside the Fossil-generated footer.
You can use either
approach in custom skins that you create.

Note that the "js.txt" file is *not* automatically inserted into
the generate HTML for a page.  You, the skin designer, must
cause the javascript to be inserted by issuing appropriate
TH1 commands in the "header.txt" or "footer.txt" files.</dd>
</dl>

Developing a new skin is simply a matter of creating appropriate
versions of these five control files.

### Skin Development Using The Web Interface

Users with admin privileges can use the Admin/Skin configuration page
on the web interface to develop a new skin.  The development of a new
skin occurs without disrupting the existing skin.  So you can work on
a new skin for a Fossil instance while the existing skin is still in
active use.

The new skin is a "draft" skin.  You initialize one of 9 draft skins
to either the current skin or to one of the built-in skins.  Then
use forms to edit the 5 control files described above.  The new
skin can be tested after each edit.  Finally, once the new skin is
working as desired, the draft skin is "published" and becomes the
new live skin that most users see.

### Skin Development Using A Local Text Editor

An alternative approach is to copy the five control files for your
baseline skin into a temporary working directory (here called
"./newskin") and then launch the [fossil ui](/help?cmd=ui) command
with the "--skin ./newskin" option.  If the argument to the --skin
option contains a "/" character, then the five control files are
read out of the directory named.  You can then edit the control
files in the ./newskin folder using you favorite text editor, and
press "Reload" on your browser to see the effects.

### Disabling The Web Browser Cache During Development

Fossil is aggressive about asking the web browser to cache 
resources.  While developing a new skin, it is often helpful to
put your web browser into developer mode and disable the cache.
If you fail to do this, then you might make some change to your skin
under development and press "Reload" only to find that the display
did not change.  After you have finished work your skin, the
caches should synchronize with your new design and you can reactivate
your web browser's cache and take it out of developer mode.

## <a id="headfoot"></a>Header and Footer Processing

The `header.txt` and `footer.txt` control files of a skin are the HTML text
of the Skin Header and Skin Footer, except that before being inserted
into the output stream, the text is run through a
[TH1 interpreter](./th1.md) that might adjust the text as follows:

  *  All text within &lt;th1&gt;...&lt;/th1&gt; is omitted from the
     output and is instead run as a TH1 script.  That TH1
     script has the opportunity to insert new text in place of itself,
     or to inhibit or enable the output of subsequent text.

  *  Text of the form "$NAME" or "$&lt;NAME&gt;" is replaced with
     the value of the TH1 variable NAME.

For example, first few lines of a typical Skin Header will look
like this:

    <div class="header">
      <div class="title"><h1>$<project_name></h1>$<title>/div>

After variables are substituted by TH1, that will look more like this:

    <div class="header">
      <div class="title"><h1>Project Name</h1>Page Title</div>

As you can see, two TH1 variable substitutions were done.

The same TH1 interpreter is used for both the header and the footer
and for all scripts contained within them both.  Hence, any global
TH1 variables that are set by the header are available to the footer.

## <a id="menu"></a>Customizing the ≡ Hamburger Menu

The menu bar of the default skin has an entry to open a drop-down menu with
additional navigation links, represented by the ≡ button (hence the name
"hamburger menu"). The Javascript logic to open and close the hamburger menu
when the button is clicked is usually handled by a script named
"hbmenu.js" that is one of the [built-in resource files](/test-builtin-files)
that are part of Fossil.

The ≡ button for the hamburger menu is added to the menu bar by the following
TH1 commands in the `header.txt` file, right before the menu bar links:

    html "<a id='hbbtn' href='$home/sitemap'>&#9776;</a>"
    builtin_request_js hbmenu.js

The hamburger button can be repositioned between the other menu links (but the
drop-down menu is always left-aligned with the menu bar), or it can be removed
by deleting the above statements.  The "html" statement inserts the appropriate
`<a>` for the hamburger menu button (some skins require something slightly
different - for example the ardoise skins wants "`<li><a>`").  The
"builtin_request_js hbmenu.js" asks Fossil to include the "hbmenu.js" 
resource files in the Fossil-generated footer.

The hbmenu.js script requires
the following `<div>` element somewhere in your header, in which to build
the hamburger menu.

    <div id='hbdrop'></div>

Out of the box, the contents of the panel is populated with the [Site
Map](/sitemap), but only if the panel does not already contain any HTML
elements (that is, not just comments, plain text or non-presentational white
space). So the hamburger menu can be customized by replacing the empty `<div
id='hbdrop'></div>` element with a menu structure knitted according to the
following template:

    <div id="hbdrop" data-anim-ms="400">
     <ul class="columns" style="column-width: 20em; column-count: auto">
      <!-- NEW GROUP WITH HEADING LINK -->
      <li>
       <a href="$home$index_page">Link: Home</a>
       <ul>
        <li><a href="$home/timeline">Link: Timeline</a></li>
        <li><a href="$home/dir?ci=tip">Link: File List</a></li>
       </ul>
      </li>
      <!-- NEW GROUP WITH HEADING TEXT -->
      <li>
       Heading Text
       <ul>
        <li><a href="$home/doc/trunk/www/customskin.md">Link: Theming</a></li>
        <li><a href="$home/doc/trunk/www/th1.md">Link: TH1 Scripts</a></li>
       </ul>
      </li>
      <!-- NEXT GROUP GOES HERE -->
     </ul>
    </div>

The custom `data-anim-ms` attribute can be added to the panel element to direct
the Javascript logic to override the default menu animation duration of 400 ms.
A faster animation duration of 80-200 ms may be preferred for smaller menus. The
animation is disabled by setting the attribute to `"0"`.


## <a id="vars"></a>TH1 Variables

Before expanding the TH1 within the header and footer, Fossil first
initializes a number of TH1 variables to values that depend on
repository settings and the specific page being generated.

   *   **`project_name`** - The project_name variable is filled with the
       name of the project as configured under the Admin/Configuration
       menu.

   *   **`project_description`** - The project_description variable is
       filled with the description of the project as configured under
       the Admin/Configuration menu.

   *   **`title`** - The title variable holds the title of the page being
       generated.

       The title variable is special in that it is deleted after
       the header script runs and before the footer script.  This is
       necessary to avoid a conflict with a variable by the same name used
       in my ticket-screen scripts.

   *   **`baseurl`** - The root of the URL namespace for this server.

   *   **`secureurl`** - The same as $baseurl except that if the scheme is
                       "http:" it is changed to "https:"

   *   **`home`** - The $baseurl without the scheme and hostname.  For example,
       if the $baseurl is "http://projectX.com/cgi-bin/fossil" then the
       $home will be just "/cgi-bin/fossil".

   *   **`index_page`** - The landing page URI as
       specified by the Admin/Configuration setup page.

   *   **`current_page`** - The name of the page currently being processed,
       without the leading "/" and without query parameters.
       Examples:  "timeline", "doc/trunk/README.txt", "wiki".

   *   **`csrf_token`** - A token used to prevent cross-site request forgery.

   *   **`default_csp`** - [Fossil’s default CSP](./defcsp.md) unless
       [overridden by custom TH1 code](./defcsp.md#th1). Useful within
       the skin for inserting the CSP into a `<meta>` tag within [a
       custom `<head>` element](#headfoot).

   *   **`nonce`** - The value of the cryptographic nonce for the request
       being processed.

   *   **`release_version`** - The release version of Fossil.  Ex: "1.31"

   *   **`manifest_version`** - A prefix on the check-in hash of the
       specific version of fossil that is running.  Ex: "\[47bb6432a1\]"

   *   **`manifest_date`** - The date of the source-code check-in for the
       version of fossil that is running.

   *   **`compiler_name`** - The name and version of the compiler used to
       build the fossil executable.

   *   **`login`** - This variable only exists if the user has logged in.
       The value is the username of the user.

   *   **`stylesheet_url`** - A URL for the internal style-sheet maintained
       by Fossil.

   *   **`logo_image_url`** - A URL for the logo image for this project, as
       configured on the Admin/Logo page.

   *   **`background_image_url`** - A URL for a background image for this
       project, as configured on the Admin/Logo page.

All of the above are variables in the sense that either the header or the
footer is free to change or erase them.  But they should probably be treated
as constants.  New predefined values are likely to be added in future
releases of Fossil.


## <a id="procedure"></a>Suggested Skin Customization Procedure

Developers are free, of course, to develop new skins using any method they
want, but the following is a technique that has worked well in the past and
can serve as a starting point for future work:

   1.  Select a built-in skin that is closest to the desired look.  Make
       copies of the css, footer, and header into files name "css.txt",
       "details.txt",
       "footer.txt", and "header.txt" in some temporary directory.

       If the Fossil source code is available, then these three files can
       be copied directly out of one of the subdirectories under skins.  If
       sources are not easily at hand, then a copy/paste out of the
       CSS, footer, and header editing screens under the Admin menu will
       work just as well.  The important point is that the three files
       be named exactly "css.txt", "footer.txt", and "header.txt" and that
       they all be in the same directory.

   2.  Run the [fossil ui](/help?cmd=ui) command with an extra
       option "--skin SKINDIR" where SKINDIR is the name of the directory
       in which the three txt files were stored in step 1.   This will bring
       up the Fossil website using the tree files in SKINDIR.

   3.  Edit the *.txt files in SKINDIR.  After making each small change,
       press Reload on the web browser to see the effect of that change.
       Iterate until the desired look is achieved.

   4.  Copy/paste the resulting css.txt, details.txt,
       header.txt, and footer.txt files
       into the CSS, details, header, and footer configuration screens
       under the Admin/Skins menu.


## See Also

*   [Customizing the Timeline Graph](customgraph.md)
Added www/defcsp.md.










































































































































































































































































































































































































































































































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# The Default Content Security Policy (CSP)

When Fossil’s web interface generates an HTML page, it normally includes
a [Content Security Policy][csp] (CSP) in the `<head>`.  The CSP specifies
allowed sources for external resources such as images,
CSS, javascript, and so forth.
The purpose of CSP is to provide an extra layer of protection against
[cross-site scripting][xss] (XSS) and code injection
attacks.  Compatible web browsers will not use external resources unless
they are specifically allowed by the CSP, which dramatically reduces
the attack surface of the application.

Fossil does not rely on CSP for security.
A Fossil server should be secure from attack even without CSP.
Fossil includes built-in server-side content filtering logic.
For example, Fossil purposely breaks `<script>` tags when it finds
them in Markdown and Fossil Wiki documents.  And the Fossil build
process scans the source code for potential injection vulnerabilities
and refuses to compile if any problems are found.
However, CSP provides an additional layer of defense against undetected
bugs that might lead to a vulnerability.

## The Default Restrictions

The default CSP used by Fossil is as follows:

<pre>
default-src 'self' data:;
script-src 'self' 'nonce-$nonce';
style-src 'self' 'unsafe-inline';
img-src * data:;
</pre>

The default is recommended for most installations.  However,
the site administrators can overwrite this default CSP using the
[default-csp setting](/help?cmd=default-csp).  For example,
CSP restrictions can be completely disabled by setting the default-csp to:

    default-src *;

The following sections detail the maining of the default CSP setting.

### <a id="base"></a> default-src 'self' data:

This policy means mixed-origin content isn’t allowed, so you can’t refer
to resources on other web domains. Browsers will ignore a link like the
one in the following Markdown under our default CSP:

    ![fancy 3D Fossil logotype](https://i.imgur.com/HalpMgt.png)

If you look in the browser’s developer console, you should see a CSP
error when attempting to render such a page.

The default policy does allow inline `data:` URIs, which means you could
[data-encode][de] your image content and put it inline within the
document:

    ![small inline image](data:image/gif;base64,R0lGODlh...)

That method is best used for fairly small resources. Large `data:` URIs
are hard to read and edit. There are secondary problems as well: if you
put a large image into a Fossil forum post this way, anyone subscribed
to email alerts will get a copy of the raw URI text, which can amount to
pages and pages of [ugly Base64-encoded text][b64].

For inline images within [embedded documentation][ed], it suffices to
store the referred-to files in the repo and then refer to them using
repo-relative URLs:

    ![large inline image](./inlineimage.jpg)

This avoids bloating the doc text with `data:` URI blobs:

There are many other cases, [covered below](#serving).

[b64]: https://en.wikipedia.org/wiki/Base64
[svr]: ./server/


### <a id="img"></a> img-src * data:

It was not always thus, but after careful consideration, we’ve chosen to
leave the source of inline images unrestricted by default in Fossil.
This allows you to pull them in from remote systems, to pull them from
within the Fossil repository itself, or to use `data:` URIs.

If you are certain all images come from only within the repository, you
can close off certain risks — tracking pixels, broken image format
decoders, system dialog box spoofing, etc. — by changing this to
“`img-src 'self'`†possibly followed by “`data:`†if you will also use
`data:` URIs.


### <a id="style"></a> style-src 'self' 'unsafe-inline'

This policy allows CSS information to come from separate files hosted
under the Fossil repo server’s Internet domain. It also allows inline CSS
`<style>` tags within the document text.

The `'unsafe-inline'` declaration allows CSS within individual HTML
elements:

    <p style="margin-left: 4em">Indented text.</p>

As the "`unsafe-`" prefix on the name implies, the `'unsafe-inline'`
feature is suboptimal for security.  However, there are
a few places in the Fossil-generated HTML that benefit from this
flexibility and the work-arounds are verbose and difficult to maintain.
Furthermore, the harm that can be done with style injections is far
less than the harm possible with injected javascript.  And so the
`'unsafe-inline'` compromise is accepted for now, though it might
go away in some future release of Fossil.


### <a id="script"></a> script-src 'self' 'nonce-%s'

This policy disables in-line JavaScript and only allows `<script>`
elements if the `<script>` includes a `nonce` attribute that matches the
one declared by the CSP. That nonce is a large random number, unique for
each HTTP page generated by Fossil, so an attacker cannot guess the
value, so the browser will ignore an attacker’s injected JavaScript.

That nonce can only come from one of three sources, all of which should
be protected at the system administration level on the Fossil server:

*   **Fossil server C code:** All code paths in Fossil that emit
    `<script>` elements include the `nonce` attribute. There are several
    cases, such as the “JavaScript†section of a [custom skin][cs].
    That text is currently inserted into each HTML page generated by
    Fossil,¹ which means it needs to include a `nonce` attribute to
    allow it to run under this default CSP.  We consider JavaScript
    emitted via these paths to be safe because it’s audited by the
    Fossil developers. We assume that you got your Fossil server’s code
    from a trustworthy source and that an attacker cannot replace your
    Fossil server binary.

*   **TH1 code:** The Fossil TH1 interpreter pre-defines the
    [`$nonce` variable](./th1.md#nonce) for use in [custom skins][cs].  For
    example, some of the stock skins that ship with Fossil include a
    wall clock feature up in the corner that updates once a minute.
    These paths are safe in the default Fossil configuration because
    only the [all-powerful Setup user][su] can write TH1 code that
    executes in the server’s running context.

    There is, however, [a default-disabled path](#xss) to beware of,
    covered in the next section.

*   **[CGI server extensions][ext]:** Fossil exports the nonce to the
    CGI in the `FOSSIL_NONCE` environment variable, which it can then
    use in `<script>` elements it generates. Because these extensions
    can only be installed by the Fossil server’s system administrator,
    this path is also considered safe.

[ext]: ./serverext.wiki
[su]:  ./caps/admin-v-setup.md#apsu


#### <a id="xss"></a>Cross-Site Scripting via Ordinary User Capabilities

We’re so restrictive about how we treat JavaScript because it can lead
to difficult-to-avoid scripting attacks. If we used the same CSP for
`<script>` tags [as for `<style>` tags](#style), anyone with check-in
rights on your repository could add a JavaScript file to your repository
and then refer to it from other content added to the site.  Since
JavaScript code can access any data from any URI served under its same
Internet domain, and many Fossil users host multiple Fossil repositories
under a single Internet domain, such a CSP would only be safe if all of
those repositories are trusted equally.

Consider [the Chisel hosting service](http://chiselapp.com/), which
offers free Fossil repository hosting to anyone on the Internet, all
served under the same `http://chiselapp.com/user/$NAME/$REPO` URL
scheme. Any one of those hundreds of repositories could trick you into
visiting their repository home page, set to [an HTML-formatted embedded
doc page][hfed] via Admin → Configuration → Index&nbsp;Page, with this
content:

    <script src="/doc/trunk/bad.js"></script>

That script can then do anything allowed in JavaScript to *any other*
Chisel repository your browser can access. The possibilities for mischief
are *vast*. For just one example, if you have login cookies on four
different Chisel repositories, your attacker could harvest the login
cookies for all of them through this path if we allowed Fossil to serve
JavaScript files under the same CSP policy as we do for CSS files.

This is why the default configuration of Fossil has no way for [embedded
docs][ed], [wiki articles][wiki], [tickets][tkt], [forum posts][fp], or
[tech notes][tn] to automatically insert a nonce into the page content.
This is all user-provided content, which could link to user-provided
JavaScript via check-in rights, effectively giving all such users a
capability that is usually reserved to the repository’s administrator.

The default-disabled [TH1 documents feature][edtf] is the only known
path around this restriction.  If you are serving a Fossil repository
that has any user you do not implicitly trust to a level that you would
willingly run any JavaScript code they’ve provided, blind, you **must
not** give the `--with-th1-docs` option when configuring Fossil, because
that allows substitution of the [pre-defined `$nonce` TH1
variable](./th1.md#nonce) into [HTML-formatted embedded docs][hfed]:

    <script src="/doc/trunk/bad.js" nonce="$nonce"></script>

Even with this feature enabled, you cannot put `<script>` tags into
Fossil Wiki or Markdown-formatted content, because our HTML generators
for those formats purposely strip or disable such tags in the output.
Therefore, if you trust those users with check-in rights to provide
JavaScript but not those allowed to file tickets, append to wiki
articles, etc., you might justify enabling TH1 docs on your repository,
since the only way to create or modify HTML-formatted embedded docs is
through check-ins.

[ed]:   ./embeddeddoc.wiki
[edtf]: ./embeddeddoc.wiki#th1
[hfed]: ./embeddeddoc.wiki#html


## <a id="serving"></a>Serving Files Within the Limits

There are several ways to serve files within the above restrictions,
avoiding the need to [override the default CSP](#override). In
decreasing order of simplicity and preference:

1.  Within [embedded documentation][ed] (only!) you can refer to files
    stored in the repo using document-relative file URLs:

         ![inline image](./inlineimage.jpg)

2.  Relative file URLs don’t work from [wiki articles][wiki],
    [tickets][tkt], [forum posts][fp], or [tech notes][tn], but you can
    still refer to them inside the repo with [`/doc`][du] or
    [`/raw`][ru] URLs:

         ![inline image](/doc/trunk/images/inlineimage.jpg)
         <img src="/raw/logo.png" style="float: right; margin-left: 2em">

3.  Store the files as [unversioned content][uv], referred to using
    [`/uv`][uu] URLs instead:

         ![logo](/uv/logo.png)

4.  Use the [optional CGI server extensions feature](./serverext.wiki)
    to serve such content via `/ext` URLs.

5.  Put Fossil behind a [front-end proxy server][svr] as a virtual
    subdirectory within the site, so that our default CSP’s “self†rules
    match static file routes on that same site. For instance, your repo
    might be at `https://example.com/code`, allowing documents in that
    repo to refer to:

    *   images as `/image/foo.png`
    *   JavaScript files  as `/js/bar.js`
    *   CSS style sheets as `/style/qux.css`

    Although those files are all outside the Fossil repo at `/code`,
    keep in mind that it is the browser’s notion of “self†that matters
    here, not Fossil’s. All resources come from the same Internet
    domain, so the browser cannot distinguish Fossil-provided content
    from static content served directly by the proxy server.

    This method opens up many other potential benefits, such as
    [TLS encryption][tls], high-performance tuning via custom HTTP
    headers, integration with other web technologies like PHP, etc.

You might wonder why we rank in-repo content as most preferred above. It
is because the first two options are the only ones that cause such
resources to be included in an initial clone or in subsequent repo
syncs. The methods further down the list have a number of undesirable
properties:

1.  Relative links to out-of-repo files break in `fossil ui` when run on
    a clone.

2.  Absolute links back to the public repo instance solve that:

        ![inline image](https://example.com/images/logo.png)

    ...but using them breaks some types of failover and load-balancing
    schemes, because it creates a [single point of failure][spof].

3.  Absolute links fail when one’s purpose in using a clone is to
    recover from the loss of a project web site by standing that clone
    up [as a server][svr] elsewhere. You probably forgot to copy such
    external resources in the backup copies, so that when the main repo
    site disappears, so do those files.

Unversioned content is in the middle of the first list above — between
fully-external content and fully in-repo content — because it isn’t
included in a clone unless you give the `--unversioned` flag. If you
then want updates to the unversioned content to be included in syncs,
you have to give the same flag to [a `sync` command](/help?cmd=sync).
There is no equivalent with other commands such as `up` and `pull`, so
you must then remember to give `fossil uv` commands when necessary to
pull new unversioned content down.

Thus our recommendation that you refer to in-repo resources exclusively.

[du]:   /help?cmd=/doc
[fp]:   ./forum.wiki
[ru]:   /help?cmd=/raw
[spof]: https://en.wikipedia.org/wiki/Single_point_of_failure
[tkt]:  ./tickets.wiki
[tn]:   ./event.wiki
[tls]:  ./server/debian/nginx.md 
[uu]:   /help?cmd=/uv
[uv]:   ./unvers.wiki
[wiki]: ./wikitheory.wiki


## <a id="override"></a>Overriding the Default CSP

If you wish to relax the default CSP’s restrictions or to tighten them
further, there are multiple ways to accomplish that.

The following methods are listed in top-down order to give the simplest
and most straightforward method first.  Further methods dig down deeper
into the stack, which is helpful to understand even if you end up using
a higher-level method.


### <a id="cspsetting"></a>The `default-csp` Setting

If the [`default-csp` setting](/help?cmd=default-csp) is defined and is
not an empty string, its value is injected into the page using
[TH1](./th1.md) via one or more of the methods below, depending on the
skin you’re using and local configuration.

Changing this setting is the easiest way to set a nonstandard CSP on
your site.

Because a blank setting tells Fossil to use its hard-coded default CSP,
you have to say something like the following to get a repository without
content security policy restrictions:

    $ fossil set -R /path/to/served/repo.fossil default-csp 'default-src *'

We recommend that instead of using the command line to change this
setting that you do it via the repository’s web interface, in
Admin → Settings.  Write your CSP rules in the edit box marked
"`default-csp`". Do not add hard newlines in that box: the setting needs
to be on a single long line. Beware that changes take effect
immediately, so be careful with your edits: you could end up locking
yourself out of the repository with certain CSP changes!

There are a few reasons why changing this setting via the command line
is inadvisable, except for very short settings like the example above:

1.  You have to be sure to set it on the repository where you want the
    CSP to apply.  Changing this setting on your local clone doesn’t
    affect the remote repo you cloned from, which is most likely where
    you want the CSP restrictions.

2.  For more complicated CSPs, the quoting rules for your shell and the
    CSP syntax may interact, making it difficult or impossible to set
    your desired CSP via the command line.  Setting it via the web UI
    doesn’t have this problem.



### <a id="th1"></a>TH1 Setup Hook

Fossil sets [the TH1 variable `$default_csp`][thvar] from the
`default-csp` setting and uses *that* to inject the value into generated
HTML pages in its stock configuration.

This means that another way you can override this value is to use
the [`th1-setup` hook script](./th1-hooks.md), which runs before TH1
processing happens during skin processing:

    $ fossil set th1-setup "set default_csp {default-src 'self'}"

After [the above](#admin-ui), this is the cleanest method.

[thvar]: ./customskin.md#vars



### <a id="csrc"></a>Fossil C Source Code

When you do neither of the above things, Fossil uses
[a hard-coded default](/info?ln=527-530&name=65a555d0d4fb846b).

We tell you about this not to suggest that you hack the Fossil C source
code to change the CSP but simply to document the next step before we
move down-stack.



### <a id="header"></a>Skin Header

[In the normal case](./customskin.md#override), Fossil injects the CSP
retrieved by one of the above methods into the header of all HTML
documents it generates:

```HTML
<head>...
  <meta http-equiv="Content-Security-Policy" content="...">
  ...
```

Fossil skips this when you’re using a custom skin *and* its
[Header section](./customskin.md#headfoot) includes a `<body>` tag. This
is because prior to Fossil 2.5, the Header for a custom skin normally
contained everything from the opening `<html>` tag through the leading
`<body>` tag. From that version onward, Fossil now generates that header
when possible, so that the skin’s Header normally provides only the
opening tags of the document body, rather than the HTML header.

When we added CSP support in Fossil 2.7, we made use of that mechanism
to inject the CSP into the generated HTML document header.

For backwards compatibility, Fossil skips this when the skin’s Header
includes a `<body>` tag. Fossil takes that as a hint that it’s dealing
with a skin made in the pre-Fossil-2.5 days and doesn’t try to blindly
override it.

The problem then is that you may be a Fossil user from the days before
Fossil 2.5, and you may be using a custom skin. This includes users who
selected one of the stock skins, since for the purposes of this section,
there is no difference between the cases. If you go into Admin → Skins →
Header and find a `<body>` tag, none of the above will apply to your
repo since Fossil will not be injecting its CSP into your pages.

If you selected one of the stock skins (e.g. Khaki) prior to upgrading
to Fossil 2.5+ and didn’t make any changes to it since that time, you
can take the simplest option, which is to simply revert to the stock
version of the skin, so your pages will have the CSP injected, at which
point this document will begin describing what Fossil does with that
repo.

If you’re using a customized version of one of the stock skins, the
skinning mechanism has a diff feature to make it easier to fold your
local changes into the stock version.

If you’re using a fully customized skin, we recommend replicating the
method that [the Bootstrap skin uses][dcinj].² Alone among the stock
Fossil skins, Bootstrap still does old-style Header processing,
providing the entire HTML header and the start of the document body.

We do *not* recommend injecting an explicit `Content-Security-Policy`
meta tag into a header to override Fossil’s default CSP. That means you
have to edit the skin every time you want to change the CSP. Use the TH1
`$default_csp` variable like the Bootstrap skin does so you can use one
of the methods above with your custom skin, so the CSP can vary
independently of the skin.

[dcinj]: /info?ln=7&name=bef080a6929a3e6f


### <a id="fep"></a>Front-End Proxy

If your Fossil repo is behind some sort of HTTP [front-end proxy][svr],
the [preferred method][pmcsp] for setting the CSP is via a custom HTTP
header, which most HTTP reverse proxy programs allow.

Beware that if you have a CSP set via both the HTTP and HTML headers
that the two CSPs [merge](https://stackoverflow.com/a/51153816/142454),
taking the most restrictive elements of each CSP. If you wish the proxy
layer’s setting to completely override Fossil’s setting, you will need
to combine that with one of the methods above to either remove the
Fossil-provided CSP or to make Fossil provide a no-restrictions CSP
which the front-end proxy can then tighten down.

[pmcsp]: https://developers.google.com/web/fundamentals/security/csp/#the_meta_tag



------------


**Asides and Digressions:**

1.  Fossil might someday switch to serving the “JavaScript†section of a
    custom skin as a virtual text file, allowing it to be cached by the
    browser, reducing page load times.

2.  The stock Bootstrap skin *did* provide redundant CSP text from
    Fossil 2.7 through Fossil 2.9, so setting the CSP via the higher
    level methods did not work with that skin. We fixed this in Fossil
    2.10, but if you selected the Bootstrap skin prior to that, you’re
    now running on a *copy* of it stored in your repo settings table, so
    the change to the stock version of the skin won’t affect that repo
    automatically. You will have to either merge the diffs in with your
    local changes or revert to the stock version of the skin.


[cs]:    ./customskin.md
[csp]:   https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
[de]:    https://dopiaza.org/tools/datauri/index.php
[xss]:   https://en.wikipedia.org/wiki/Cross-site_scripting
Added www/delta-manifests.md.






















































































































































































































































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# Delta Manifests

<div class="sidebar">Do not confuse these with the core [Fossil delta
format](./delta_format.wiki). This document describes an optional
feature not enabled by default.</div>

This article describes "delta manifests," a special-case form of
checkin manifest which is intended to take up far less space than
a normal checkin manifest, in particular for repositories with
many files. We'll see, however, that the space savings, if indeed
there are any, come with some caveats.

This article assumes that the reader is at least moderately familiar
with Fossil's [artifact file format](./fileformat.wiki), in particular
the structure of checkin manifests, and it won't make much sense to
readers unfamiliar with that topic.

# Background and Motivation of Delta Manifests

A checkin manifest includes a list of every file in that checkin.  A
moderately-sized project can easily have a thousand files, and every
checkin manifest will include those thousand files. As of this writing
Fossil's own checkins contain 989 files and the manifests are 80kb
each. Thus a checkin which changes only 2 bytes of source code
ostensibly costs another 80kb of storage for the manifest for that
change.

Delta manifests were conceived as a mechanism to help combat that
storage overhead.

# Makeup of a Delta Manifest

A delta manifest is structured like a normal manifest (called a
"baseline" manifest) except that it has *two types of parents*: the
P-card which is part of (nearly) every manifest and a so-called
baseline (denoted by a B-card). The P-card tells us which artifact(s)
is/are the parents for purposes of the SCM version DAG. The B-card
tells us which manifest to use as a basis for this delta. The B-card
need not be, and often is not, the same as the P-card. Here's an
example:

```
B c04ce8aaf1170966c6f8abcce8b57e72a0fa2b81
C Minor\sdoc\supdates...
D 2021-03-11T18:56:24.686
F bindings/s2/shell_extend.c 6d8354c693120a48cfe4798812cd24499be174b2
<15 F-cards snipped for brevity>
F src/repo.c 2f224cb0e59ccd90ba89c597e40b8e8d87506638
P 61d3e64e6fb1a93d4a7b0182e4c6b94d178d66d9
R a84ec2e8e1eb37ff0d94cac262795e23
U stephan
Z 536e6d26dd8dbe2779d9e5f52a15518e
```

The B-card names another manifest, by its unique ID, the same way that
a P-card does. A manifest may have multiple P-card parents (the second
and subsequent ones denoting merge parents) but B-cards always refer
to exactly one parent.

What unambiguously distinguishes this as a delta is the existence of
the B-card. All deltas have a B-card and no other type of artifact has
one. What also, but not unambiguously, distinguishes it as a delta is
that it has only 17 F-cards, whereas a baseline manifest in that same
repository has (as of this writing) 291 F-cards. In this particular
case, the delta manifest is 1363 bytes, compared to 20627 bytes for
the next checkin - a baseline manifest. That's a significant saving in
F-cards, especially if a repository contains thousands of files. That
savings, however, comes with caveats which we'll address below.

Trivia regarding the B-card:

- The B-card always refers to a baseline manifest, not another delta.
- Deltas may not chain with another delta, but any number of deltas
  may have the same B-card. It is quite common for a series of delta
  manifest checkins, each of which derives (in the P-card sense) from
  the one before it, to have the same B-card.

A delta manifest is functionally identical to a normal manifest except
that it has a B-card and how it records F-cards. Namely, it only
records F-cards which have changed at some point between this delta
and the version represented by the delta's B-card. This recording of
F-card *differences* also means that delta manifests, unlike normal
manifests, have to explicitly record deleted F-cards. Baseline
manifests do not record deletions. Instead, they include a list of
every file which is part of that checkin. Deltas, however, record the
differences between their own version and a baseline version, and thus
have to record deletions. They do this by including F-cards which have
only a file name and no hash.

Iterating over F-cards in a manifest is something several important
internal parts of Fossil have to do. Iterating over a baseline
manifest, e.g. when performing a checkout, is straightforward: simply
walk through the list in the order the cards are listed. A delta,
however, introduces a significant wrinkle to that process. In short,
when iterating over a delta's F-cards, code has to compare the delta's
list to the baseline's list. If the delta has an entry the parent does
not have, or which is a newer entry for the same file, the delta's
entry is used. If the delta is missing an entry which the baseline
has, the baseline's entry is used. When a deletion F-card is
discovered in the delta (recall that baselines do not record
deletions), iteration over that card is skipped - the internal
algorithms which iterate over F-cards never report deletions to the
code iterating over those cards. The reason for that is consistency:
only deltas record file deletions, but the fact that it's a delta is
an internal detail, not something which higher-level code should
concern itself with. If higher-level iteration code were shown file
deletions, they would effectively be dealing with a leaky abstraction
and special-case handling which only applies to delta manifests. The
F-card iteration API hides such details from its users (other
Fossil-internal APIs).


# When does Fossil Create Deltas?

By default, Fossil never creates delta manifests. It can be told to do
so using the `--delta` flag to the [`commit`
command](/help/commit). (Before doing so in your own repositories,
please read the section below about the caveats!) When a given
repository gets a delta manifest for the first time, Fossil records
that fact in the repository's `config` table with an entry named
`seen-delta-manifest`. If, in later sessions, Fossil sees that that
setting has a true value, it will *consider* creating delta manifests
by default.

Conversely, the [`forbid-delta-manifests` repository config
setting](/help/forbid-delta-manifests) may be used to force Fossil to
*never* create deltas. That setting will propagate to other repository
clones via the sync process, to try to ensure that no clone introduces
a delta manifests. We'll cover reasons why one might want to use that
setting later on.

After creating a delta manifest during the commit process, Fossil
examines the size of the delta. If, in Fossil's opinion, the space
savings are not significant enough to warrant the delta's own
overhead, it will discard the delta and create a new baseline manifest
instead. (The heuristic it uses for that purpose is tucked away in
Fossil's checkin algorithm.)


# Caveats

Delta manifests may appear, on the surface, to be a great way to save
a few bytes of repository space. There are, however, caveats...

## Space Savings?

Though deltas were conceived as a way to save storage space, that
benefit is *not truly achieved* because...

When a manifest is created, Fossil stores its parent version as a
[fossil delta](./delta_format.wiki) (as opposed to a delta manifest)
which succinctly descibes the differences between the parent and its
new child. This form of compression is extremely space-efficient and
can reduce the real storage space requirements of a manifest from tens
or hundreds of kilobytes down to a kilobyte or less for checkins which
modify only a few files. As an example, as of this writing, Fossil's
[tip checkin baseline manifest](/artifact/decd537016bf) is 80252 bytes
(uncompressed), and the delta-compressed baseline manifest of the
[previous checkin](/artifact/2f7c93f49c0e) is stored as a mere 726
bytes of Fossil-delta'd data (not counting the z-lib compression which
gets applied on top of that). In this case, the tip version modified 7
files compared to its parent version.

Thus delta manifests do not *actually* save much storage space. They
save *some*, in particular in the tip checkin version: Fossil
delta-compresses *older* versions of checkins against the child
versions, as opposed to delta-compressing the children against the
parents. The reason is to speed up access for the most common case -
the latest version. Thus tip-version delta manifests are more
storage-space efficient than tip-version baseline manifests. Once the
next version is committed, though, and Fossil deltification is applied
to those manifests, that difference in space efficiency shrinks
tremendously, often to the point of insignificance.

We can observe the Fossil-delta compression savings using a bit of
3rd-party code which can extract Fossil-format blobs both with and
without applying their deltas:

```
$ f-acat tip > A        # tip version's manifest
$ f-acat prev --raw > B # previous manifest in its raw fossil-deltified form
$ f-acat prev > C       # previous manifest fossil-undelta'd
$ ls -la A B C
-rw-rw-r-- 1 user user 80252 Mar 12 07:09 A  # tip
-rw-rw-r-- 1 user user   726 Mar 12 07:09 B  # previous: delta'd
-rw-rw-r-- 1 user user 80256 Mar 12 07:09 C  # previous: undelta'd
```

For comparison's sake, when looking at a separate repository which
uses delta manifests, a delta-compressed delta manifest takes up
approximately the same space as a delta-compressed baseline manifest
(to within 10 bytes for the test samples).

i.e. delta manifests may not save any storage space except for the tip
version! (*Surprise!*)

In terms of RAM costs, deltas usually cost more memory than baseline
manifests. The reason is because traversing a delta requires having
not only that delta in memory, but also its baseline version. Delta
manifests are seldom used in ways which do not require also loading
their baselines. Thus Fossil internally requires two manifest objects
for most operations with a delta manifest, whereas a baseline has but
one. The difference in RAM cost is directly proportional to the size
of the delta manifest.

## Manifests as Proof of Code Integrity

Delta manifests have at least one more notable caveat, this one
arguably more significant than an apparent lack of space savings:
they're useless for purposes of publishing a manifest which downstream
clients can use to verify the integrity of their copy of the software.

Consider this use case: [the SQLite project](https://sqlite.org)
publishes source code to many thousands of downstream consumers, many
of whom would like to be able to verify that the copy they have
downloaded is actually the copy published by the project. This is
easily achieved by providing a copy of the downloaded version's
manifest, as it contains a hash of every single file the project
published and the manifest itself has a well-known hash and is
cryptographically tamper-proof. It's mathematically extremely improbable for a
malicious party to modify such a manifest and re-publish it as an
"official" one, as the various hashes (F-cards, R-card, Z-card, *and*
the hash of the manifest itself) would not line up. A collision-based
attack would have to defeat *all four of those hashes*, which is
practically impossible to do. Thus a Fossil checkin manifest can be used
to provide strong assurances that a given copy of the software has not
been tampered with since being exported by Fossil.

*However*, that use case is *only possible with baseline manifests*.
A delta manifest is *essentially useless* for that purpose. The
algorithm for traversing F-cards of a delta manifest is not trivial
for arbitrary clients to reproduce, e.g. using a shell script. While
it *could* be done in any higher-level programming language (or some
truly unsightly shell code), it would be an onerous burden on
downstream consumers and would not be without risks of having bugs
which invalidate the strong guarantees provided by the manifest.

It's worth noting that the core Fossil project repository does not use
delta manifests, at least in part for the same reason the SQLite
project does not: the ability to provide a manifest which clients can
easily use to verify the integrity of the code they've downloaded. The
[`forbid-delta-manifests` config
setting](/help/forbid-delta-manifests) is used to ensure that none are
introduced into the repository beyond the few which were introduced
solely for testing purposes.

Deleted www/delta1.gif.

cannot compute difference between binary files

Deleted www/delta2.gif.

cannot compute difference between binary files

Deleted www/delta3.gif.

cannot compute difference between binary files

Deleted www/delta4.gif.

cannot compute difference between binary files

Deleted www/delta5.gif.

cannot compute difference between binary files

Deleted www/delta6.gif.

cannot compute difference between binary files

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<nowiki>
<h1 align="center">
Fossil Delta Encoding Algorithm
</h1>
<title>Fossil Delta Encoding Algorithm</title>

<h2>Abstract</h2>

<p>A key component for the efficient storage of multiple revisions of
a file in fossil repositories is the use of delta-compression, i.e. to
store only the changes between revisions instead of the whole
file.</p>

<p>This document describes the encoding algorithm used by Fossil to
generate deltas. It is targeted at developers working on either
<a href="index.wiki">fossil</a> itself, or on tools compatible with
it. The exact format of the generated byte-sequences, while in general
not necessary to understand encoder operation, can be found in the
companion specification titled "<a href="delta_format.wiki">Fossil
Delta Format</a>".
</p>

<p>The algorithm is inspired
by <a href="http://samba.anu.edu.au/rsync/">rsync</a>.</p>

<a name="argresparam"></a><h2>1.0 Arguments, Results, and Parameters</h2>
<h2 id="argresparam">1.0 Arguments, Results, and Parameters</h2>

<p>The encoder takes two byte-sequences as input, the "original", and
the "target", and returns a single byte-sequence containing the
"delta" which transforms the original into the target upon its
application.</p>

<p>Note that the data of a "byte-sequence" includes its length,
i.e. the number of bytes contained in the sequence.</p>

<p>The algorithm has one parameter named "NHASH", the size of the
"sliding window" for the "rolling hash", in bytes. These two terms are
explained in the next section. The value of this parameter has to be a
power of two for the algorithm to work. For Fossil the value of this
parameter is set to "16".</p>

<a name="operation"></a><h2>2.0 Operation</h2>
<h2 id="operation">2.0 Operation</h2>

<p>The algorithm is split into three phases which generate
the <a href="delta_format.wiki#header">header</a>,
<a href="delta_format.wiki#slist">segment list</a>,
and <a href="delta_format.wiki#trailer">trailer</a> of the delta, per
its general <a href="delta_format.wiki#structure">structure</a>.</p>

<p>The two phases generating header and trailer are not covered here
as their implementation trivially follows directly from the
specification of the <a href="delta_format.wiki">delta format</a>.</p>

<p>This leaves the segment-list. Its generation is done in two phases,
a pre-processing step operating on the "original" byte-sequence,
followed by the processing of the "target" byte-sequence using the
information gathered by the first step.</p>

<a name="preprocessing"></a><h3>2.1 Preprocessing the original</h3>
<h3 id="preprocessing">2.1 Preprocessing the original</h3>

<p>A major part of the processing of the "target" is to find a range
in the "original" which contains the same content as found at the
current location in the "target".</p>

<p>A naive approach to this would be to search the whole "original"
for such content. This however is very inefficient as it would search
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computed.
</li>
<li>A hash table is filled, mapping from the hashes of the chunks to
the list of chunk locations having this hash.
</li>
</ol>

<a name="processing"></a><h3>2.1 Processing the target</h3>
<h3 id="processing">2.2 Processing the target</h3>

<p>This, the main phase of the encoder, processes the target in a loop
from beginning to end. The state of the encoder is captured by two
locations, the "base" and the "slide". "base" points to the first byte
of the target for which no delta output has been generated yet, and
"slide" is the location of the window used to look in the "origin" for
commonalities. This window is NHASH bytes long.</p>
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to <a href="delta_format.wiki#copyrange">copy a range</a>, or
</li>
<li>move the window forward one byte.
</li>
</ul>
</p>

<verbatim type="pikchr float-right">
TARGET: [
       scale = 0.8
       down
       "Target" bold
       box fill palegreen width 150% height 200% "Processed"
   GI: box same as first box fill yellow height 25% "Gap → Insert"
   CC: box same fill orange height 200% "Common → Copy"
    W: box same as GI fill lightgray width 125% height 200% "Window" bold
       box same as CC height 125% ""
       box same fill white ""
]
<img src="encode10.gif" align="right" hspace="10">

[ "Base"  bold ; right ; arrow 33% ] with .e at TARGET.GI.nw
[ "Slide" bold ; right ; arrow 33% ] with .e at TARGET.W.nw

ORIGIN: [
       down
       "Origin" bold
   B1: box fill white
   B2: box fill orange height 200%
   B3: box fill white  height 200%
] with .nw at 0.75 right of TARGET.ne

arrow from TARGET.W.e to ORIGIN.B2.w "Signature" aligned above
</verbatim>

<p>To make this decision the encoder first computes the hash value for
the NHASH bytes in the window and then looks at all the locations in
the "origin" which have the same signature. This part uses the hash
table created by the pre-processing step to efficiently find these
locations.</p>

<p>For each of the possible candidates the encoder finds the maximal
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needed more bytes to encode the range than there were bytes in the
range, then no instructions are emitted and the window is moved one
byte forward. The "base" is left unchanged in that case.</p>

<p>The processing loop stops at one of two conditions:
<ol>
<li>The encoder decided to move the window forward, but the end of the
window reached the end of the "target". 
window reached the end of the "target".
</li>
<li>After the emission of instructions the new "base" location is
within NHASH bytes of end of the "target", i.e. there are no more than
at most NHASH bytes left.
</li>
</ol>
</p>

<p>If the processing loop left bytes unencoded, i.e. "base" not
exactly at the end of the "target", as is possible for both end
conditions, then one last insert instruction is emitted to put these
bytes into the delta.<p>

<a name="exceptions"></a><h2>3.0 Exceptions</h2>
<h2 id="exceptions">3.0 Exceptions</h2>

<p>If the "original" is at most NHASH bytes long no compression of
changes is possible, and the segment-list of the delta consists of a
single literal which contains the entire "target".</p>

<p>This is actually equivalent to the second end condition of the
processing loop described in the previous section, just checked before
actually entering the loop.</p>

<a name="rollhash"></a><h2>4.0 The rolling hash</h2>
<h2 id="rollhash">4.0 The rolling hash</h2>

<p>The rolling hash described below and used to compute content
signatures was chosen not only for good hashing properties, but also
to enable the easy (incremental) recalculation of its value for a
sliding window, i.e. where the oldest byte is removed from the window
and a new byte is shifted in.<p>

<a name="rhdef"></a><h3>4.1 Definition</h3>
<h3 id="rhdef">4.1 Definition</h3>

<p>Assuming an array Z of NHASH bytes (indexing starting at 0) the
hash V is computed via</p>

<p align=center><table><tr><td>
<p><img src="encode1.gif" align="center"></p>
<p><img src="encode2.gif" align="center"></p>
<p><img src="encode3.gif" align="center"></p>
<div align="center"><img src="encode1.gif"></div>
<div align="center"><img src="encode2.gif"></div>
<div align="center"><img src="encode3.gif"></div>
</td></tr></table></p>

where A and B are unsigned 16-bit integers (hence the <u>mod</u>), and
V is a 32-bit unsigned integer with B as MSB, A as LSB.

<a name="rhincr"></a><h3>4.2 Incremental recalculation</h3>
<h3 id="rhincr">4.2 Incremental recalculation</h3>

<p>Assuming an array Z of NHASH bytes (indexing starting at 0) with
hash V (and components A and B), the dropped
byte <img src="encode4.gif" align="center">, and the new byte
<img src="encode5.gif" align="center"> , the new hash can
be computed incrementally via: </p>

<p align=center><table><tr><td>
<p><img src="encode6.gif" align="center"></p>
<p><img src="encode7.gif" align="center"></p>
<p><img src="encode8.gif" align="center"></p>
<div align="center"><img src="encode6.gif"></div>
<div align="center"><img src="encode7.gif"></div>
<div align="center"><img src="encode8.gif"></div>
</td></tr></table></p>

<p>For A, the regular sum, it can be seen easily that this the correct
way recomputing that component.</p>

<p>For B, the weighted sum, note first that <img src="encode4.gif"
align="center"> has the weight NHASH in the sum, so that is what has
to be removed. Then adding in <img src="encode9.gif" align="center">
adds one weight factor to all the other values of Z, and at last adds
in <img src="encode5.gif" align="center"> with weight 1, also
generating the correct new sum</p>
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<nowiki>
<h1 align="center">
Fossil Delta Format
</h1>
<title>Fossil Delta Format</title>
<h1>1.0 Overview</h1>

<p>Fossil achieves efficient storage and low-bandwidth synchronization
Fossil achieves efficient storage and low-bandwidth synchronization
through the use of delta-compression.  Instead of storing
or transmitting the complete content of an artifact, fossil stores or
or transmitting the complete content of an artifact, Fossil stores or
transmits only the changes relative to a related artifact.
</p>

<p>This document describes the delta-encoding format used by fossil.
This document describes the delta-encoding format used by Fossil.
The intended audience is developers working on either
<a href="index.wiki">fossil</a> itself, or on tools compatible with
fossil.</p>
<a href="index.wiki">Fossil</a> itself, or on tools compatible with
Fossil. Understanding of this document is <em>not</em> required for
ordinary users of Fossil.  This document is an implementation detail.

This document only describes the delta file format.  A 
[./delta_encoder_algorithm.wiki|separate document] describes one possible
algorithm for generating deltas in this format.
<p>Note that the delta-encoding is not a fundamental element of the
state of a fossil repository.  A state of a fossil repository is
defined by the uncompressed and undeltaed content of all artifacts.
The fact the artifacts
are stored on disk using this delta-encoding format is merely an
optimization.  One could, in theory, create an entirely new and
compatible implementation of fossil that used a different delta-encoding
or did no delta-encoding at all.  However, experience has shown that
the delta-encoding described here is both efficient to compute and
results in very small deltas, so its continued use is recommended.</p>

<h2>1.1 Sample Software And Analysis Tools</h2>

The core routines used to generate and apply deltas in this format
are contained in the [../src/delta.c|delta.c] source file.  Interface
logic, including "test-*" commands to directly manipulate deltas are
contained in the [../src/deltacmd.c|deltacmd.c] source file.  SQL functions
to create, apply, and analyze deltas are implemented by code in the
[../src/deltafunc.c|deltafunc.c] source file.

The following command-line tools are available to create and apply
deltas and to test the delta logic:

   *   [/help?cmd=test-delta|fossil test-delta] &rarr; Run self-tests of
       the delta logic

   *   [/help?cmd=test-delta-create|fossil test-delta-create X Y] &rarr; compute
       a delta that converts file X into file Y.  Output that delta.

   *   [/help?cmd=test-delta-apply|fossil test-delta-apply X D] &rarr; apply
       delta D to input file X and output the result.

   *   [/help?cmd=test-delta-analyze|fossil test-delta-analyze X Y] &rarr; compute
       and delta that converts file X into file Y but instead of writing the
       delta to output, write performance information about the delta.

When running the [/help?cmd=sqlite3|fossil sql] command to get an
interactive SQL session connected to the repository, the following
additional SQL functions are provided:
<a name="structure"></a><h2>1.0 Structure</h2>
<img src="delta1.gif" align="left" hspace="10">

   *   <b>delta_create(</b><i>X</i><b>,</b><i>Y</i><b>)</b> &rarr;
       Compute a data that carries blob X into blob Y and return that delta
       as a blob.

   *   <b>delta_apply(</b><i>X</i><b>,</b><i>D</i><b>)</b> &rarr;
       Apply delta D to input blob X return a new blob which is the result.


   *   <b>delta_output_size(</b><i>D</i>)</b> &rarr;
       Return the size of the output that would result from applying delta D.

   *   <b>delta_parse(</b><i>D</i>)</b> &rarr; This is a table-valued function
       that returns one row for the header, for the trailer, and for each segment
       in delta D.


<h1 id="structure">2.0 Structure</h1>
<verbatim type="pikchr">
    leftmargin = 0.1
    box height 50% "Header"
    box same "Segments"
    box same "Trailer"
</verbatim>

<p>A delta consists of three parts, a "header", a "trailer", and a
"segment-list" between them.</p>
A delta consists of three parts, a "header", a "trailer", and a
"segment-list" between them.

<p>Both header and trailer provide information about the target
Both header and trailer provide information about the target
helping the decoder, and the segment-list describes how the target can
be constructed from the original.</p>
be constructed from the original.

<a name="header"></a><h3>1.1 Header</h3>
<img src="delta6.gif" align="left" hspace="10">
<h2 id="header">2.1 Header</h2>
<verbatim type="pikchr">
    leftmargin = 0.1
    box height 50% "Size"
    box same "\"\\n\""
</verbatim>

<p>The header consists of a single number followed by a newline
The header consists of a single number followed by a newline
character (ASCII 0x0a). The number is the length of the target in
bytes.</p>
bytes.

<p>This means that, given a delta, the decoder can compute the size of
This means that, given a delta, the decoder can compute the size of
the target (and allocate any necessary memory based on that) by simply
reading the first line of the delta and decoding the number found
there. In other words, before it has to decode everything else.</p>
there. In other words, before it has to decode everything else.

<a name="trailer"></a><h3>1.2 Trailer</h3>
<img src="delta5.gif" align="left" hspace="10">
<h2 id="trailer">2.2 Trailer</h2>
<verbatim type="pikchr">
    leftmargin = 0.1
    box height 50% "Checksum"
    box same "\";\""
</verbatim>

<p>The trailer consists of a single number followed by a semicolon (ASCII
The trailer consists of a single number followed by a semicolon (ASCII
0x3b). This number is a checksum of the target and can be used by a
decoder to verify that the delta applied correctly, reconstructing the
target from the original.</p>
target from the original.

<p>The checksum is computed by treating the target as a series of
The checksum is computed by treating the target as a series of
32-bit integer numbers (MSB first), and summing these up, modulo
2^32-1. A target whose length is not a multiple of 4 is padded with
0-bytes (ASCII 0x00) at the end.</p>
0-bytes (ASCII 0x00) at the end.

<p>By putting this information at the end of the delta a decoder has
By putting this information at the end of the delta a decoder has
it available immediately after the target has been reconstructed
fully.</p>
fully.

<a name="slist"></a><h3>1.3 Segment-List</h3>
<img src="delta2.gif" align="left" hspace="10">

<p>The segment-list of a delta describes how to create the target from
<h2 id="slist">2.3 Segment-List</h2>
<verbatim type="pikchr">
    leftmargin = 0.1
    PART1: [
        B1: box height 50% width 15% ""
        B2: box same ""
        B3: box same ""
            "***"
            box height 50% width 15% ""
        I1: line down 50% from B2 .s
            arrow right until even with B3.e
            box "Insert Literal" height 50%
            line down 75% from I1 .s
            arrow right until even with B3.e
            box "Copy Range" height 50%
    ]
    down
    PART2: [
        ""
        box "Length" height 50%
        right
        box "\":\"" same
        box "Bytes" same
    ] with .nw at previous.sw
</verbatim>

The segment-list of a delta describes how to create the target from
the original by a combination of inserting literal byte-sequences and
copying ranges of bytes from the original. This is there the
copying ranges of bytes from the original. This is where the
compression takes place, by encoding the large common parts of
original and target in small copy instructions.</p>
original and target in small copy instructions.

<p>The target is constructed from beginning to end, with the data
The target is constructed from beginning to end, with the data
generated by each instruction appended after the data of all previous
instructions, with no gaps.</p>
instructions, with no gaps.

<a name="insertlit"></a><h4>1.3.1 Insert Literal</h4>
<h3 id="insertlit">2.3.1 Insert Literal</h3>

<p>A literal is specified by two elements, the size of the literal in
bytes, and the bytes of the literal itself.</p>
A literal is specified by two elements, the size of the literal in
bytes, and the bytes of the literal itself.

<verbatim type="pikchr">
    leftmargin = 0.1
    box "Length" height 50%
    box "\":\"" same
    box "Bytes" same
</verbatim>
<img src="delta4.gif" align="left" hspace="10">
<p>The length is written first, followed by a colon character (ASCII
0x3a), followed by the bytes of the literal.</p>

The length is written first, followed by a colon character (ASCII
0x3a), followed by the bytes of the literal.

<a name="copyrange"></a><h4>1.3.2 Copy Range</h4>
<h3 id="copyrange">2.3.2 Copy Range</h3>

<p>A range to copy is specified by two numbers, the offset of the
A range to copy is specified by two numbers, the offset of the
first byte in the original to copy, and the size of the range, in
bytes. The size zero is special, its usage indicates that the range
extends to the end of the original.</p>
extends to the end of the original.

<verbatim type="pikchr">
    leftmargin = 0.1
    box "Length" height 50%
    box "\"@\"" same
    box "Offset" same
    box "\",\"" same
</verbatim>
<img src="delta3.gif" align="left" hspace="10">
<p>The length is written first, followed by an "at" character (ASCII
0x40), then the offset, followed by a comma (ASCII 0x2c).</p>


The length is written first, followed by an "at" character (ASCII
0x40), then the offset, followed by a comma (ASCII 0x2c).

<a name="intcoding"></a><h2>2.0 Encoding of integers</h2>
<h1 id="intcoding">3.0 Encoding of integers</h1>

<p>
The format currently handles only 32 bit integer numbers. They are
written base-64 encoded, MSB first, and without leading
"0"-characters, except if they are significant (i.e. 0 => "0").
</p>

The base-64 encoding uses one character for each 6 bits of
the integer to be encoded.  The encoding characters are:

<p>
<pre>
The base-64 coding is described in
<a href="http://www.ietf.org/rfc/rfc3548.txt">RFC 3548</a>.
</p>
0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz~
</pre>

The least significant 6 bits of the integer are encoded by
the first character, followed by
the next 6 bits, and so on until all non-zero bits of the integer
are encoded.  The minimum number of encoding characters is used.
Note that for integers less than 10, the base-64 coding is a
ASCII decimal rendering of the number itself.

<a name="examples"></a><h2>3.0 Examples</h2>
<h1 id="examples">4.0 Examples</h1>

<a name="examplesint"></a><h3>3.1 Integer encoding</h3>
<h2 id="examplesint">4.1 Integer encoding</h2>

<table border=1>
<table>
<tr>
<th>Value</th>
<th>Encoding</th>
</tr>
<tr>
<td>0</td>
<td>0</td>
</tr>
<tr>
<td>6246</td>
<td>1Xb</td>
</tr>
<tr>
<td>-1101438770</td>
<td>2zMM3E</td>
</tr>
</table>

<a name="examplesdelta"></a><h3>3.2 Delta encoding</h3>
<h2 id="examplesdelta">4.2 Delta encoding</h2>

<p>An example of a delta using the specified encoding is:</p>
An example of a delta using the specified encoding is:

<table border=1><tr><td><pre>
<pre>
1Xb
4E@0,2:thFN@4C,6:scenda1B@Jd,6:scenda5x@Kt,6:pieces79@Qt,F: Example: eskil~E@Y0,2zMM3E;</pre>
</td></tr></table>
</pre>

<p>This can be taken apart into the following parts:</p>
This can be taken apart into the following parts:

<table border=1>
<table>
<tr><th>What  </th> <th>Encoding         </th><th>Meaning </th><th>Details</th></tr>
<tr><td>Header</td> <td>1Xb              </td><td>Size    </td><td> 6246	     </td></tr>
<tr><td>S-List</td> <td>4E@0,	         </td><td>Copy    </td><td> 270 @ 0	     </td></tr>
<tr><td>&nbsp;</td> <td>2:th	         </td><td>Literal </td><td> 2 'th'	     </td></tr>
<tr><td>&nbsp;</td> <td>FN@4C,	         </td><td>Copy    </td><td> 983 @ 268	     </td></tr>
<tr><td>&nbsp;</td> <td>6:scenda         </td><td>Literal </td><td> 6 'scenda'	     </td></tr>
<tr><td>&nbsp;</td> <td>1B@Jd,	         </td><td>Copy    </td><td> 75 @ 1256	     </td></tr>
<tr><td>&nbsp;</td> <td>6:scenda         </td><td>Literal </td><td> 6 'scenda'	     </td></tr>
<tr><td>&nbsp;</td> <td>5x@Kt,	         </td><td>Copy    </td><td> 380 @ 1336	     </td></tr>
<tr><td>&nbsp;</td> <td>6:pieces	 </td><td>Literal </td><td> 6 'pieces'	     </td></tr>
<tr><td>&nbsp;</td> <td>79@Qt,	         </td><td>Copy    </td><td> 457 @ 1720     </td></tr>
<tr><td>Header</td> <td>1Xb              </td><td>Size    </td><td> 6246         </td></tr>
<tr><td>S-List</td> <td>4E@0,            </td><td>Copy    </td><td> 270 @ 0      </td></tr>
<tr><td>&nbsp;</td> <td>2:th             </td><td>Literal </td><td> 2 'th'       </td></tr>
<tr><td>&nbsp;</td> <td>FN@4C,           </td><td>Copy    </td><td> 983 @ 268        </td></tr>
<tr><td>&nbsp;</td> <td>6:scenda         </td><td>Literal </td><td> 6 'scenda'       </td></tr>
<tr><td>&nbsp;</td> <td>1B@Jd,           </td><td>Copy    </td><td> 75 @ 1256        </td></tr>
<tr><td>&nbsp;</td> <td>6:scenda         </td><td>Literal </td><td> 6 'scenda'       </td></tr>
<tr><td>&nbsp;</td> <td>5x@Kt,           </td><td>Copy    </td><td> 380 @ 1336       </td></tr>
<tr><td>&nbsp;</td> <td>6:pieces     </td><td>Literal </td><td> 6 'pieces'       </td></tr>
<tr><td>&nbsp;</td> <td>79@Qt,           </td><td>Copy    </td><td> 457 @ 1720     </td></tr>
<tr><td>&nbsp;</td> <td>F: Example: eskil</td><td>Literal </td><td> 15 ' Example: eskil'</td></tr>
<tr><td>&nbsp;</td> <td>~E@Y0,           </td><td>Copy    </td><td>  4046 @ 2176        </td></tr>
<tr><td>Trailer</td><td>2zMM3E           </td><td>Ckecksum</td><td> -1101438770         </td></tr>
<tr><td>Trailer</td><td>2zMM3E           </td><td>Checksum</td><td> -1101438770         </td></tr>
</table>

<p>The unified diff behind the above delta is</p>
The unified diff behind the above delta is

<table border=1><tr><td><pre>
bluepeak:(761) ~/Projects/Tcl/Fossil/Devel/devel > diff -u ../DELTA/old ../DELTA/new 
<verbatim>
bluepeak:(761) ~/Projects/Tcl/Fossil/Devel/devel > diff -u ../DELTA/old ../DELTA/new
--- ../DELTA/old        2007-08-23 21:14:40.000000000 -0700
+++ ../DELTA/new        2007-08-23 21:14:33.000000000 -0700
@@ -5,7 +5,7 @@
 

  *  If the server does not have write permission on the database
     file, or on the directory containing the database file (and 
     file, or on the directory containing the database file (and
-    it is thus unable to update database because it cannot create
+    it is thus unable to update the database because it cannot create
     a rollback journal) then it currently fails silently on a push.
     It needs to return a helpful error.
 

@@ -27,8 +27,8 @@
  *  Additional information displayed for the "vinfo" page:
 

      +  All leaves of this version that are not included in the
-        descendant list.  With date, user, comment, and hyperlink.
-        Leaves in the descendant table should be marked as such.
+        descendant list.  With date, user, comment, and hyperlink.
+        Leaves in the descendant table should be marked as such.
         See the compute_leaves() function to see how to find all
         leaves.
      +  Add file diff links to the file change list.
@@ -37,7 +37,7 @@
 

  *  The /xfer handler (for push, pull, and clone) does not do
     delta compression.  This results in excess bandwidth usage.
-    There are some code in xfer.c that are sketches of ideas on
+    There are some pieces in xfer.c that are sketches of ideas on
     how to do delta compression, but nothing has been implemented.
 

  *  Enhancements to the diff and tkdiff commands in the cli.
@@ -45,7 +45,7 @@
     single file.  Allow diffs against any two arbitrary versions,
     not just diffs against the current check-out.  Allow 
     not just diffs against the current check-out.  Allow
     configuration options to replace tkdiff with some other
-    visual differ of the users choice.
+    visual differ of the users choice. Example: eskil.
 

  *  Ticketing interface (expand this bullet)

</verbatim>
</pre></td></tr></table>



<a name="notes"></a><h2>Notes</h2>
<h1 id="notes">Notes</h1>

<ul>
<li>Pure text files generate a pure text delta.
</li>
<li>Binary files generate a delta that may contain some binary data.
</li>
<li>The delta encoding does not attempt to compress the content
<li>The delta encoding does not attempt to compress the content.
It was considered to be much
more sensible to do compression using a separate general-purpose
compression library, like <a href="http://www.zlib.net">zlib</a>.
</li>
</ul>
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<title>Managing Project Documentation</title>
<title>Project Documentation</title>
<h1 align="center">Managing Project Documentation</h1>

Fossil provides a built-in <a href="wikitheory.wiki">wiki</a>
that can be used to store the
documentation for a project.  This is sufficient for many projects.
If your project is well-served by wiki documentation, then you
need read no further.

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  3.  Only people with check-in privileges can modify the documentation.
      (This might be either an advantage or disadvantage, depending
      on the nature of your project.)

We will call documentation that is included as files in the source tree
"embedded documentation".

<h2>Fossil Support For Embedded Documentation</h2>
<h1>1.0 Fossil Support For Embedded Documentation</h1>

The fossil web interface supports embedded documentation using
the "/doc" page.  To access embedded documentation, one points
a web browser to a fossil URL of the following form:

<blockquote>
<pre>
<i>&lt;baseurl&gt;</i><big><b>/doc/</b></big><i>&lt;version&gt;</i><big><b>/</b></big><i>&lt;filename&gt;</i>
</blockquote>
</pre>

The <i>&lt;baseurl&gt;</i> is the main URL used to access the fossil web server.
For example, the <i>&lt;baseurl&gt;</i> for the fossil project itself is
either <b>http://www.fossil-scm.org/fossil</b> or
[https://fossil-scm.org/home].
<b>http://www.hwaci.com/cgi-bin/fossil</b>.
If you launch the web server using the "<b>fossil server</b>" command line,
If you launch the web server using the "[/help?cmd=ui|fossil ui]" command line,
then the <i>&lt;baseurl&gt;</i> is usually
<b>http://localhost:8080/</b>.

The <i>&lt;version&gt;</i> is any unique prefix of the check-in ID for 
the check-in containing the documentation you want to access.
Or <i>&lt;version&gt;</i> can be the name of a 
[./branching.wiki | branch] in order to show
the documentation for the latest version of that branch.
Or <i>&lt;version&gt;</i> can be one of the keywords "<b>tip</b>" or
"<b>ckout</b>".  The "<b>tip</b>" keyword means to use the most recent
The <i>&lt;version&gt;</i> is the
[./checkin_names.wiki|name of a check-in]
that contains the embedded document.  This might be a hash prefix for
the check-in, or it might be the name of a branch or tag, or it might
be a timestamp.  See the prior link
for more possibilities and examples.

The <i id="ckout">&lt;version&gt;</i> can
also be the special identifier "<b>ckout</b>".
check-in.  This is useful if you want to see the very latest
version of the documentation.  The "<b>ckout</b>" keywords means to
The "<b>ckout</b>" keywords means to
pull the documentation file from the local source tree on disk, not
from the any check-in.  The "<b>ckout</b>" keyword normally
only works when you start your server using the "<b>fossil server</b>"
or "<b>fossil ui</b>"
command line and is intended to show what the documentation you are currently
editing looks like before you check it in.
from the any check-in.  The "<b>ckout</b>" keyword
only works when you start your server using the 
"[/help?cmd=server|fossil server]" or "[/help?cmd=ui|fossil ui]"
commands.  The "/doc/ckout" URL is intended to show a preview of
the documentation you are currently editing but have not yet checked in.

The original designed purpose of the "ckout" feature is to allow the
user to preview local changes to documentation before committing the
change.  This is an important facility, since unlike other document
languages like HTML, there is still a lot of variation among rendering
engines for Fossil's markup languages, Markdown and Fossil Wiki.  Your
changes may look fine in your whizzy GUI Markdown editor, but what
actually matters is how <i>Fossil</i> will interpret your Markdown text.
Therefore, you should always preview your edits before committing them.

To help make "ckout" easier to use, the "[/help?cmd=ui|fossil ui]"
command has the "--ckout-alias NAME" option that makes NAME an
alias for "ckout".  If you are editing a collection of documents
that have hardcoded links to one another in the form of
"/doc/trunk/...", for example, you can test your changes by
running "fossil ui --ckout-alias trunk" and all of the links will
point to your uncommitted edits rather than to the latest trunk
check-in.

Finally, the <i>&lt;filename&gt;</i> element of the URL is the
pathname of the documentation file relative to the root of the source
tree.

The mimetype (and thus the rendering) of documentation files is 
determined by the file suffix.  Fossil currently understands 192
different file suffixes, including all the popular ones such as
".css", ".gif", ".htm", ".html", ".jpg", ".jpeg", ".png", and ".txt".
The mimetype (and thus the rendering) of documentation files is
determined by the file suffix.  Fossil currently understands
[/mimetype_list|many different file suffixes],
including all the popular ones such as ".css", ".gif", ".htm",
".html", ".jpg", ".jpeg", ".png", and ".txt".

Documentation files whose names end in ".wiki" use the 
[/wiki_rules | same markup as wiki pages] -
Documentation files whose names end in ".wiki" use the
[/wiki_rules | fossil wiki markup] -
a safe subset of HTML together with some wiki rules for paragraph
breaks, lists, and hyperlinks.  The ".wiki" and ".txt" pages
breaks, lists, and hyperlinks.
Documentation files ending in ".md" or ".markdown" use the
[/md_rules  | Markdown markup language].
Documentation files ending in ".txt" are plain text.
Wiki, markdown, and plain text documentation files
are rendered with the standard fossil header and footer added.
All other mimetypes are delivered directly to the requesting
Most other mimetypes are delivered directly to the requesting
web browser without interpretation, additions, or changes.

<h2 id="html">1.1 HTML Rendering With Fossil Headers And Footers</h2>

Files with the mimetype "text/html" (the .html or .htm suffix) are
usually rendered directly to the browser without interpretation.
However, if the file begins with a &lt;div&gt; element like this:

    <b>&lt;div class='fossil-doc' data-title='<i>Title Text</i>'&gt;</b>

Then the standard Fossil header and footer are added to the document
prior to being displayed.  The "class='fossil-doc'" attribute is
required for this to occur.  The "data-title='...'" attribute is
optional, but if it is present the text will become the title displayed
in the Fossil header.  An example of this can be seen in Fossil
Documentation Index www/permutedindex.html:

  *  [/file/www/permutedindex.html?txt|source text for <b>www/permutedindex.html</b>]
  *  [/doc/trunk/www/permutedindex.html|<b>www/permutedindex.html</b> rendered as HTML]

Beware that such HTML files render in the same browser security context
as all other embedded documentation served from Fossil; they are not
fully-independent web pages. One practical consequence of this is that
embedded <tt>&lt;script&gt;</tt> tags will cause a
[https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP | Content
Security Policy] error in your browser with the default CSP as served by
Fossil. See the documentation on [./customskin.md#headfoot | Header and
Footer Processing] and [./defcsp.md | The Default CSP].


<h1>2.0 Server-Side Text Substitution</h1>

Fossil can do a few types of substitution of server-side information
into the embedded document.

<h2>2.1 "$ROOT" In HTML and Markdown Hyperlinks</h2>

Hyperlinks in Markdown and HTML embedded documents can reference 
the root of the Fossil repository using the special text "$ROOT"
at the beginning of a URL. For example, a Markdown hyperlink to
the Markdown formatting rules might be
written in the embedded document like this:

<verbatim>
[Markdown formatting rules]($ROOT/wiki_rules)
</verbatim>

Depending on how the how the Fossil server is configured, that hyperlink
might be renderer like one of the following:

<verbatim>
<a href="/wiki_rules">Wiki formatting rule</a>
<a href="/cgi-bin/fossil/wiki_rules">Wiki formatting rules</a>
</verbatim>

So, in other words, the "$ROOT" text is converted into whatever
the "&lt;baseurl&gt;" is for the document.

This substitution works for HTML and Markdown documents.
It does not work for Wiki embedded documents, since with
Wiki you can just begin a URL with "/" and it automatically knows
to prepend the $ROOT.

<h2>2.2 "$CURRENT" In "/doc/" Hyperlinks</h2>

Similarly, URLs of the form "/doc/$CURRENT/..." have the check-in
hash of the check-in currently being viewed substituted in place of
the "$CURRENT" text.  This feature, in combination with the "$ROOT"
substitution above, allows an absolute path to be used for hyperlinks.

For example, if an embedded document documented wanted to reference
some other document in a separate file named "www/otherdoc.md",
it could use a URL like this:

<verbatim>
[Other Document]($ROOT/doc/$CURRENT/www/otherdoc.md)
</verbatim>

As with "$ROOT", this substitution only works for Markdown and HTML
documents.  For Wiki documents, you would need to use a relative URL.

<h2 id="th1">2.3 TH1 Documents</h2>

Enabling TH1 document support requires the following:

   *  Configure the build with the <code>--with-th1-docs</code> flag.
   *  Enable the <code>th1-docs</code> setting, which is only available
      after building with <code>--with-th1-docs</code>.
   *  Affected files must have a <code>.th1</code> file extension.
   *  The code to run must be embedded in blocks of
      <code>&lt;th1>...&lt;/th1></code>.

Fossil will substitute the value of [./th1.md | TH1 expressions]
within the <code>&lt;th1>...&lt;/th1></code> blocks into
the output HTML.

Since TH1 is a full scripting language, this feature essential grants
the ability to execute code on the server to anyone with check-in
privilege for the project.
This is a security risk that needs to be carefully managed.
The feature is off by default.
Administrators should understand and carefully assess the risks
before enabling the use of TH1 within embedded documentation.


<h2>Examples</h2>
<h1>3.0 Examples</h1>

This file that you are currently reading is an example of
embedded documentation.  The name of this file in the fossil
source tree is "<b>www/embeddeddoc.wiki</b>".
You are perhaps looking at this
file using the URL:

   [http://www.fossil-scm.org/index.html/doc/tip/www/embeddeddoc.wiki].
<pre>[https://fossil-scm.org/home/doc/trunk/www/embeddeddoc.wiki]</pre>

The first part of this path, the "[http://www.fossil-scm.org/index.html]",
The first part of this path, the "[https://fossil-scm.org/home]",
is the base URL.  You might have originally typed:
[http://www.fossil-scm.org/].  The web server at the www.fossil-scm.org
site automatically redirects such links by appending "index.html".  The
"index.html" file on www.fossil-scm.org is really a CGI script
(do not be mislead by the name) which runs the fossil web service in
CGI mode.  The "index.html" CGI script looks like this:
[https://fossil-scm.org/].  The web server at the fossil-scm.org
site automatically redirects such links by appending "home".  The
"home" file on fossil-scm.org is really a [./server/any/cgi.md|CGI script]
which runs the fossil web service in CGI mode.
The "home" CGI script looks like this:

<blockquote><pre>
<pre>
#!/usr/bin/fossil
repository: /fossil/fossil.fossil
</pre></blockquote>
</pre>

This is one of three ways to set up a 
<a href="quickstart.wiki#serversetup">fossil web server</a>.
This is one of the many ways to set up a
<a href="./server/">Fossil server</a>.

The "<b>/tip/</b>" part of the URL tells fossil to use
the documentation files from the check-in that was checked in most
recently.  If you wanted to see an historical version of this document,
you could substitute the name of a check-in for "<b>/tip/</b>".
The "<b>/trunk/</b>" part of the URL tells fossil to use
the documentation files from the most recent trunk check-in.
If you wanted to see an historical version of this document,
you could substitute the name of a check-in for "<b>/trunk/</b>".
For example, to see the version of this document associated with
check-in [9be1b00392], simply replace the "<b>/tip/</b>" with
check-in [9be1b00392], simply replace the "<b>/trunk/</b>" with
"<b>/9be1b00392/</b>".  You can also substitute the symbolic name
for a particular version or branch.  For example, you might
replace "<b>/tip/</b>" with "<b>/trunk/</b>" to get the latest
version of this document in the "trunk" branch.  The symbolic name
replace "<b>/trunk/</b>" with "<b>/experimental/</b>" to get the latest
version of this document in the "experimental" branch.  The symbolic name
can also be a date and time string in any of the following formats:</p>

<ul>
<li> <i>YYYY-MM-DD</i>
<li> <i>YYYY-MM-DD</i><b>T</b><i>HH:MM</i>
<li> <i>YYYY-MM-DD</i><b>T</b><i>HH:MM:SS</i>
<li> <i>YYYY-MM-DD<b>T</b>HH:MM</i>
<li> <i>YYYY-MM-DD<b>T</b>HH:MM:SS</i>
</ul>

When the symbolic name is a date and time, fossil shows the version 
When the symbolic name is a date and time, fossil shows the version
of the document that was most recently checked in as of the date
and time specified.  So, for example, to see what the fossil website
looked like at the beginning of 2010, enter:

<blockquote>
<a href="http://www.fossil-scm.org/index.html/doc/2010-01-01/www/index.wiki">
http://www.fossil-scm.org/index.html/doc/<b>2010-01-01</b>/www/index.wiki
</a>
<pre><a href="https://fossil-scm.org/home/doc/2010-01-01/www/index.wiki">https://fossil-scm.org/home/doc/<b>2010-01-01</b>/www/index.wiki
</a></pre>
</blockquote>

The file that encodes this document is stored in the fossil source tree under
the name "<b>www/embeddeddoc.wiki</b>" and so that name forms the
last part of the URL for this document.

As I sit writing this documentation file, I am testing my work by
running the "<b>fossil server</b>" command line and viewing
running the "<b>fossil ui</b>" command line and viewing
<b>http://localhost:8080/doc/ckout/www/embeddeddoc.wiki</b> in
Firefox.  I am doing this even though I have not yet checked in
the "<b>www/embeddeddoc.wiki</b>" file for the first time.  Using
the special "<b>ckout</b>" version identifier on the "<b>/doc</b>" page
it is easy to make multiple changes to multiple files and see how they all
look together before committing anything to the repository.
Deleted www/encode10.gif.

cannot compute difference between binary files

Added www/encryptedrepos.wiki.


















































































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<title>How To Use Encrypted Repositories</title>

<h2>Introduction</h2>

Fossil can be compiled so that it works with encrypted repositories using
the [https://www.sqlite.org/see/doc/trunk/www/readme.wiki|SQLite Encryption Extension].
This technical note explains the process.

<h2>Building An Encryption-Enabled Fossil</h2>

The SQLite Encryption Extension (SEE) is proprietary software and requires
[https://sqlite.org/purchase/see|purchasing a license].

Assuming you have an SEE license, the first step of compiling Fossil to
use SEE is to create an SEE-enabled version of the SQLite database source code.
This alternative SQLite database source file should be called "sqlite3-see.c"
and should be placed in the extsrc/ subfolder of the Fossil sources, right beside
the public-domain "sqlite3.c" source file.  Also make a copy of the SEE-enabled
"shell.c" file, renamed as "shell-see.c", and place it in the extsrc/ subfolder
beside the original "shell.c".

Add the --with-see command-line option to the configuration script to enable
the use of SEE on unix-like systems.

<pre>
./configure --with-see; make
</pre>

To build for Windows using MSVC, add
the "USE_SEE=1" argument to the "nmake" command line.

<pre>
nmake -f makefile.msc USE_SEE=1
</pre>

<h2>Using Encrypted Repositories</h2>

Any Fossil repositories whose filename ends with ".efossil" is taken to be
an encrypted repository.  Fossil will prompt for the encryption password and
attempt to open the repository database using that password.

Every invocation of fossil on an encrypted repository requires retyping the
encryption password.
To avoid excess password typing, consider using the "fossil shell"
command which prompts for the password just once, then reuses it for each
subsequent Fossil command entered at the prompt.

On Windows, the "fossil server", "fossil ui", and "fossil shell" commands do not
(currently) work on an encrypted repository.

<h2>Additional Security</h2>

Use the FOSSIL_SECURITY_LEVEL environment for additional protection.

<pre>
export FOSSIL_SECURITY_LEVEL=1
</pre>

A setting of 1 or greater
prevents fossil from trying to remember the previous sync password.

<pre>
export FOSSIL_SECURITY_LEVEL=2
</pre>

A setting of 2 or greater
causes all password prompts to be preceded by a random translation matrix similar
to the following:

<pre>
abcde fghij klmno pqrst uvwyz
qresw gjymu dpcoa fhkzv inlbt
</pre>

When entering the password, the user must substitute the letter on the second
line that corresponds to the letter on the first line.  Uppercase substitutes
for uppercase inputs, and lowercase substitutes for lowercase inputs.  Letters
that are not in the translation matrix (digits, punctuation, and "x") are not
modified.  For example, given the
translation matrix above, if the password is "pilot-9crazy-xube", then the user
must type "fmpav-9ekqtb-xirw".  This simple substitution cypher helps prevent
password capture by keyloggers.
Added www/env-opts.md.








































































































































































































































































































































































































































































































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Environment Variables and Global Options
========================================

Fossil uses a number of environment variables and supports a number
of global options. Most of these seem to be primarily documented in
the source code, with the primary exception of `--args` which is
described in the usage text printed by running fossil with no
arguments at all.



Global Options
--------------

The following options are understood by the fossil command itself, and
are collected before any subcommand begins processing.

`--args FILENAME`: Read the file `FILENAME` and replace these two
arguments with its content. Each line of the file is assumed to be an
argument unless it starts with '-' and contains a space, in which case
it is assumed to be another flag and is treated as such. `--args
FILENAME` may be used in conjunction with any other flags.

`--case-sensitive BOOL`: Override the `case-sensitive` setting, which
can override the native preferences of the platform for case sensitive
file names: insensitive on Windows, sensitive on Unix. There are
probably odd interactions possible if you mix case sensitive and case
insensitive file systems on any single platform. This option or the
global setting should be used to force the case sensitivity to the
most sensible condition.

`--cgitrace`: Active CGI tracing.

`--chdir DIRECTORY`: Change to the named directory before processing
any commands.


`--comfmtflags NUMBER`: Specify flags that control how check-in comments
and certain other text outputs are formatted for display. The flags are
individual bits in `NUMBER`, which must be specified in base 10:

  * _0_ &mdash; Uses the revised algorithm with no special handling.

  * _1_ &mdash; Uses the legacy algorithm, other flags are ignored.

  * _2_ &mdash; Trims leading and trailing carriage-returns and line-feeds
        where they do not materially impact pre-existing formatting
        (i.e. at the start of the comment string _and_ right before
        line indentation).

  * _4_ &mdash; Trims leading and trailing spaces where they do not materially
        impact the pre-existing formatting (i.e. at the start of the
        comment string _and_ right before line indentation).

  * _8_ &mdash; Attempts to break lines on word boundaries while honoring the
        logical line length.

  * _16_ &mdash; Looks for the original comment text within the text being
         printed.  Upon matching, a new line will be emitted, thus
         preserving more of the pre-existing formatting.


`--comment-format NUMBER`: Alias for `--comfmtflags NUMBER`.


`--errorlog ERRLOG`: Name a file to which fossil will log panics,
errors, and warnings.


`--help`: If `--help` is found anywhere on the command line, translate
the command to `fossil help cmdname` where `cmdname` is the first
argument that does not begin with a `-` character.  If all arguments
start with `-`, translate to `fossil help argv[1] argv[2]...`.

`--httptrace`: (Sets `g.fHttpTrace`.) Trace outbound HTTP requests.

`--localtime`: Override the `timeline-utc` option to explicitly use
local time.

`--nocgi`: Prevent fossil from acting as a CGI by default even if the
`GATEWAY_INTERFACE` environment variable is set.

`--no-th-hook`: (Sets `g.fNoThHook`.) Override the `th1-hooks` setting
and prevent any TH1 hooks from being executed.

`--quiet`: (Sets `g.fQuiet`.) Cause fossil to suppress various messages and progress
indicators that would otherwise be printed.

`--sqltrace`: (Sets `g.SqlTrace`.) Implies `--sqlstats`. Trace certain
SQLite database activity, especially showing every SQL query
processed.

`--sqlstats`: (Sets `g.fSqlStats`.) Print a number of performance
statistics about each SQLite database used when it is closed.

`--sshtrace`: (Sets `g.fSshTrace`.)

`--ssl-identity`: The fully qualified name of the file containing the client
certificate and private key to use, in PEM format.  It can be created by
concatenating the client certificate and private key files.  This identity will
be presented to SSL servers to authenticate the client, in addition to the
normal password authentication.

`--systemtrace`: (Sets `g.fSystemTrace`.) Trace all commands launched
as sub processes.

`--user LOGIN`: (Sets `g.zLogin`) Also `-U LOGIN`. Set the user name
used with the repository.

`--utc`: Override the `timeline-utc` option to explicitly use
UTC time.

`--vfs VFSNAME`: Load the named VFS into SQLite.


Environment Variables
---------------------

The location of the user's account-wide [configuration database][configdb]
depends on the operating system and on the existence of various 
environment variables and/or files.  See the discussion of the
[configuration database location algorithm][configloc] for details.

`EDITOR`: Name the editor to use for check-in and stash comments.
Overridden by the local or global `editor` setting or the `VISUAL`
environment variable.

`FOSSIL_BREAK`: If set, an opportunity will be created to attach a
debugger to the Fossil process prior to any significant work being
performed.

`FOSSIL_FORCE_TICKET_MODERATION`: If set, *ALL* changes for tickets
will be required to go through moderation (even those performed by the
local interactive user via the command line).  This can be useful for
local (or remote) testing of the moderation subsystem and its impact
on the contents and status of tickets.

`FOSSIL_FORCE_WIKI_MODERATION`: If set, *ALL* changes for wiki pages
will be required to go through moderation (even those performed by the
local interactive user via the command line).  This can be useful for
local (or remote) testing of the moderation subsystem and its impact
on the contents and status of wiki pages.


`FOSSIL_HOME`: Location of [configuration database][configdb].
See the [configuration database location][configloc] description
for additional information.

`FOSSIL_USE_SEE_TEXTKEY`: If set, treat the encryption key string for
SEE as text to be hashed into the actual encryption key.  This has no
effect if Fossil was not compiled with SEE support enabled.


`FOSSIL_USER`: Name of the default user account if the checkout, local
or global `default-user` setting is not present. The first environment
variable found in the environment from the list `FOSSIL_USER`, `USER`,
`LOGNAME`, and `USERNAME` is the user name. If none of those are set,
then the default user name is "root". See the discussion of Fossil
Username below for a lot more detail.


`FOSSIL_SECURITY_LEVEL`: If set to any of the values listed below,
additional measures for password security will be enabled (also see
[How To Use Encrypted Repositories][encryptedrepos.wiki]):

[encryptedrepos.wiki]: /doc/trunk/www/encryptedrepos.wiki

  * _≥1_ &mdash; Do not remember passwords.

  * _≥2_ &mdash; Use a scrambled matrix for password input.


`FOSSIL_TCL_PATH`: When Tcl stubs support is configured, point to a
specific file or folder containing the version of Tcl to load at run
time.

`FOSSIL_TEST_DANGEROUS_IGNORE_OPEN_CHECKOUT`: When set to the literal
value `YES_DO_IT`, the test suite will relax the constraint that some
tests may not run within an open checkout.  This is subject to removal
in the future.

`FOSSIL_VFS`: Name a VFS to load into SQLite.

`GATEWAY_INTERFACE`: If present and the `--nocgi` option is not, assume
fossil is invoked from a web server as a CGI command, and act
accordingly.

`HOME`: Potential location of the [configuration database][configdb].
See the [configuration database location][configloc] description for details.

`HOMEDRIVE`, `HOMEPATH`: (Windows) Location of the `~/.fossil` file.
The first environment variable found in the environment from the list
`FOSSIL_HOME`, `LOCALAPPDATA` (Windows), `APPDATA` (Windows),
`HOMEDRIVE` and `HOMEPATH` (Windows, used together), and `HOME` is
used as the location of the `~/.fossil` file.

`HTTP_HOST`: If defined, included in error log messages.

`http_proxy`: If the global or local settings `proxy` is not set, this
is used as the default value for the `proxy` setting.


`HTTP_USER_AGENT`: If defined, included in error log messages.


`LOCALAPPDATA`: (Windows) Location of the `~/.fossil` file. The first
environment variable found in the environment from the list
`FOSSIL_HOME`, `LOCALAPPDATA` (Windows), `APPDATA` (Windows),
`HOMEDRIVE` and `HOMEPATH` (Windows, used together), and `HOME` is
used as the location of the `~/.fossil` file.

`LOGNAME`: Name of the logged in user on many Unix-like platforms.
Used as the fossil user name if `FOSSIL_USER` is not specified. See
the discussion of Fossil Username below for a lot more detail.

`PATH`: Used by most platforms to locate programs invoked without a
fully qualified name. Explicitly used by `fossil ui` on certain platforms
to choose the browser to launch.

`PATH_INFO`: If defined, included in error log messages.

`QUERY_STRING`: If defined, included in error log messages.

`REMOTE_ADDR`: If defined, included in error log messages.

`REMOTE_HOST`: Used by `fossil http` run from `stunnel` to identify
the remote host.

`REQUEST_METHOD`: If defined, included in error log messages.

`REQUEST_URI`: If defined, included in error log messages.

`SCRIPT_NAME`: If defined, included in error log messages.

`SSH_CONNECTION`: Informs CGI processing if the remote client is SSH.

`SSL_CERT_FILE`, `SSL_CERT_DIR`: Override the [`ssl-ca-location`]
(/help?cmd=ssl-ca-location) setting.

`SQLITE_FORCE_PROXY_LOCKING`: From `sqlite3.c`, 1 means force always
use proxy, 0 means never use proxy, and undefined means use proxy for
non-local files only.

`SQLITE_TMPDIR`: Names the temporary file location for SQLite.  When
set, this will be used instead of `TMPDIR`.


`SYSTEMROOT`: (Windows) Used to locate `notepad.exe` as a
fall back comment editor.

`TERM`: If the linenoise library is used (almost certainly not on
Windows), it will check `TERM` to verify that the interactive terminal
is not named on a short list on terminals known to not work with
linenoise. Linenoise is a library that provides command history and
command line editing to interactive programs, and can be used in the
`fossil sqlite3` command.

`TH1_DELETE_INTERP`: Set this variable to ask fossil to explicitly
delete the TH1 interpreter, if it is loaded, then check that it
released all of its allocated memory, when exiting fossil. This is not
strictly necessary, but makes debugging memory leaks easier. See
[main.c near line 386](/artifact/e75796be5338a81c?ln=386,391) for the
code.

`TH1_ENABLE_DOCS`: Override the local or global setting `tcl-docs`
to enable TH1 documents in fossil.

`TH1_ENABLE_HOOKS`: Override the local or global setting `tcl-hooks`
to enable TH1 hooks in fossil.

`TH1_ENABLE_TCL`: Override the local or global setting `tcl` to enable
Tcl in fossil.

`TH1_TEST_ANON_CAPS`: Override the default anonymous permissions used
when processing the `--set-anon-caps` option for the `test-th-eval`,
`test-th-render`, and `test-th-source` test commands.

`TH1_TEST_USER_CAPS`: Override the default user permissions used when
processing the `--set-user-caps` option for the `test-th-eval`,
`test-th-render`, and `test-th-source` test commands.

`TMPDIR`: Names the temporary file location for SQLite.


`USER`: Name of the logged in user on many Unix-like platforms.
Used as the fossil user name if `FOSSIL_USER` is not specified. See
the discussion of Fossil Username below for a lot more detail.

`USERNAME`: Name of the logged in user on Windows platforms.
Used as the fossil user name if `FOSSIL_USER` is not specified. See
the discussion of Fossil Username below for a lot more detail.

`VISUAL`: Name the editor to use for check-in and stash comments.
Overrides the `EDITOR` environment variable. Overridden by the local
or global `editor` setting.



Notes on Related Values
-----------------------

### CGI and JSON Parameters


The JSON API implementation looks up many values in the first of
several places searched. This unifies the parameter handling logic,
allows the caller to choose whether to prefer URL parameters, request
headers, or the POST payload, and allows the `fossil json` command to
share most of the same logic as the `/json` API path. The search order
is a POST payload, GET/COOKIE/non-JSON POST, JSON POST, the system
environment.

See the comment above the implementation of [`json_getenv`][json.c]
for some further discussion.

[json.c]: /artifact/6df1d80dece8968b?ln=277,290

### Comment Editor

The editor used to edit a check-in or stash comment is named by the
local or global setting `editor`. If neither is set, then the environment
variables `VISUAL`, and `EDITOR` are checked in that order.

On Windows, if no editor is named, then Notepad is used. Note that the
operation will be aborted if `notepad.exe` is not found in the Windows
folder.

On Unix-like platforms, if no editor is named, then a message is
displayed on stdout, and stdin is read until a single line containing
only a dot is seen.


### Error logging

If logging errors to a file, fossil will include the values of the
following environment variables in the error log entry if they are
defined: `HTTP_HOST`, `HTTP_USER_AGENT`, `PATH_INFO`, `QUERY_STRING`,
`REMOTE_ADDR`, `REQUEST_METHOD`, `REQUEST_URI`, and `SCRIPT_NAME`.



### Fossil Username

In absence of any explicit setting, fossil will use the same name you
logged in to your platform with, as the user name when interacting
with local and remote repositories. Note that only the name is shared,
fossil makes no attempt to share or leverage any platform's
authentication mechanisms or passwords.

When logging in to a repository, it tries a series of sources for the
user name, and the first non-blank name that succeeds is the logged in
user. The order is:

1.  The --user and -U command-line options.
2.  If running within an open checkout (the local database is open),
    check in its table of values stored per open checkout for the
    value stored by `fossil user default USERNAME`.
3.  The default user in the repository (setting `default-user`)
4.  The `FOSSIL_USER` environment variable.
5.  The `USER` environment variable.
6.  The `LOGNAME` environment variable.
7.  The `USERNAME` environment variable.
8.  Check if the user can be extracted from the remote URL, if
    there is a remote URL.

Items 2 and 3 are both set by `fossil user default USERNAME`, the
first within an open checkout, the second outside and using the `-R
REPOSITORY` option to identify the repository. Both cases require that
the named user be present in the repository when the default user is
assigned. Although the default user is internally stored as if it were
a setting named `default-user`, it is not accessible through
the `fossil set` command.

Items 5, 6, and 7 cover most of the names of an environment variable
set automatically by the platform with the name of the platform's
logged in user for use by programs. Historically, `USER` comes from
Unix System-V, `LOGNAME` from BSD, and `USERNAME` from Windows, but
many Linux distributions will set both `USER` and `LOGNAME` for broad
compatibility.

When creating a new repository, fossil needs a user name for the admin
user granted the "s" permission. But since fossil generally expects
that `fossil new` or `fossil clone` are used outside of any checkout
(especially when run for the first time without any checkouts at all
or the users's global settings database), it looks in a shorter list
of places for a non-blank name. In the special case of a clone,
`default-user` can be copied from the original, and so it can be set
in the clone even before any users have been created, and in that case
it will be the new admin user. If `default-user` is not set, then the
first found environment variable from the list `FOSSIL_USER`, `USER`,
`LOGNAME`, and `USERNAME`, is the user name. As a final fallback, if
none of those are set, then the default user name is "root".


### Configuration Database Location

Fossil keeps some information pertinent to each user in the user's
[configuration database file][configdb]. 
The configuration database file includes the global settings
and the list of repositories and checkouts used by `fossil all`.

The location of the configuration database file depends on the
operating system and on the existence of various environment
variables and/or files.  In brief, the configuration database is
usually:

  *  Traditional unix &rarr; "`$HOME/.fossil`"
  *  Windows &rarr; "`%LOCALAPPDATA%/_fossil`"
  *  [XDG-unix][xdg] &rarr; "`$HOME/.config/fossil.db`"

[xdg]: https://www.freedesktop.org/wiki/

See the [configuration database location
algorithm][configloc] discussion for full information.

### SQLite VFS to use

See [the SQLite documentation](http://www.sqlite.org/vfs.html) for an
explanation of what a VFS actually is and what it does.

If the default VFS underneath SQLite is not suitable, an alternative
can be selected with either the `--vfs VFSNAME` option or the
`FOSSIL_VFS` environment variable. The `--vfs` option takes
precedence.


### <a id="temp"></a>Temporary File Location

Fossil places some temporary files in the checkout directory. Most notably,
supporting files related to merge conflicts are placed in the same
folder as the merge result.

Other temporary files need a different home. The rules for choosing one are
complicated.

Fossil-specific code uses `FOSSIL_TEMP`, `TEMP`, and `TMP`, in that
order. Fossil’s own test suite prepends `FOSSIL_TEST_TEMP` to that list.

The underlying SQLite code uses several different path sets for its temp
files, depending on the platform type.

On Unix-like platforms, excepting Cygwin, SQLite first checks the
environment variables `SQLITE_TMPDIR` and `TMPDIR`, in that order. If
neither is defined, it falls back to a hard-coded list of paths:
`/var/tmp`, `/usr/tmp`, and `/tmp`. If all of that fails, it uses the
current working directory.

For Cygwin builds, SQLite instead uses the first defined variable in
this list: `SQLITE_TMPDIR`, `TMPDIR`, `TMP`, `TEMP`, and `USERPROFILE`.

For native Windows builds, SQLite simply calls the OS’s [`GetTempPath()`
API][gtp].  See that reference page for details.

[gtp]: https://msdn.microsoft.com/en-us/library/windows/desktop/aa364992%28v=vs.85%29.aspx



That said, it is not unusual for utilities on all platforms to assume
that `TEMP` or `TMP` point somewhere safe for temporary files.

If the identified temporary folder is not writable, then weird things
will happen on all platforms.


### Web browser

Occasionally, fossil wants to launch a web browser for the user, most
obviously as part of the `fossil ui` command. In that specific case,
the browser is launched pointing at the web server started by `fossil
ui` listening on a private TCP port.

On all platforms, if the local or global settings `web-browser` is
set, that is the command used to open a URL.

Otherwise, the specific actions vary by platform.

On Unix-like platforms other than Apple's, it looks for the first
program from the list `xdg-open`, `gnome-open`, `firefox`, and
`google-chrome` that it can find on the `PATH`.

On Apple platforms, it assumes that `open` is the command to open a
URL in the user's configured default browser.

On Windows platforms, it assumes that `start` is the command to open
a URL in the user's configured default browser.

[configdb]: ./tech_overview.wiki#configdb
[configloc]: ./tech_overview.wiki#configloc
Added www/event.wiki.
























































































































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<title>Technical Notes</title>

<h2>What Is A "Technote"?</h2>

In Fossil, a "technical note" or "technote" (formerly called an "event")
is a special kind of [./wikitheory.wiki | wiki page]
that is associated with a point in time rather than having a page name.
Each technote causes a single entry to appear on the
[/timeline?y=e | Timeline Page].
Clicking on the timeline link will display the text of the technote.
The wiki content, the timeline entry text, the
time of the technote, and the timeline background color can all be edited.

As with check-ins, wiki, and tickets, all technotes automatically synchronize
to other repositories.  Hence, technotes can be viewed, created, and edited
off-line.  And the complete edit history for technotes is maintained
for auditing purposes.

Possible uses for technotes include:

  *  <b>Milestones</b>.  Project milestones, such as releases or beta-test
      cycles, can be recorded as technotes.  The timeline entry for the technote
      can be something simple like "Version 1.2.3" perhaps with a bright
      color background to draw attention to the entry and the wiki content
      can contain release notes, for example.

  *  <b>Blog Entries</b>.  Blog entries from developers describing the current
     state of a project, or rationale for various design decisions, or
     roadmaps for future development, can be entered as technotes.

  *  <b>Process Checkpoints</b>.  For projects that have a formal process,
     technotes can be used to record the completion or the initiation of
     various process steps.  For example, a technote can be used to record
     the successful completion of a long-running test, perhaps with
     performance results and details of where the test was run and who
     ran it recorded in the wiki content. The technote can be added
     from a script.

  *  <b>News Articles</b>.  Significant occurrences in the life cycle of
     a project can be recorded as news articles using technotes.  Perhaps the
     domain name of the canonical website for a project changes, or new
     server hardware is obtained.  Such happenings are appropriate for
     reporting as news.

  *  <b>Announcements</b>.  Changes to the composition of the development
     team or acquisition of new project sponsors can be communicated as
     announcements which can be implemented as technotes.

  *  <b>Signed Checksums</b>.  Technotes containing cryptographically signed
     checksums can be linked to repository artifacts, thereby creating a
     traceable, auditable chain so that users can readily verify the integrity
     and authenticity of project deliverables. And the command line interface
     to technotes enables embedding such processes in scripts.

No project is required to use technotes.  But technotes can help many projects
stay better organized and provide a better historical record of the
development progress.

<h2>Viewing Technotes</h2>

Because technotes are considered a special kind of wiki,
users must have permission to read wiki in order read technotes.
Enable the "j" permission under the /Setup/Users menu in order
to give specific users or user classes the ability to view wiki
and technotes.

Technotes show up on the timeline.  Click on the hyperlink beside the
technote title to see the complete text.

<h2>Creating, Editing and Viewing Technotes</h2>

There is a hyperlink under the /wikihelp menu that can be used to create
new technotes.  And there is a submenu hyperlink on technote displays for
editing existing technotes.

Technotes can also be created using the <b>wiki create</b> command:

<verbatim>
fossil wiki create TestTechnote -t now --technote-bgcolor lightgreen technote.md
Created new tech note 2021-03-15 13:05:56
</verbatim>

This command inserts a light green technote in the timeline at 2021-03-15 13:05:56, with 
the contents of file <b>technote.md</b> and comment "TestTechnote". Specifying a different time using
<b>-t DATETIME</b> will insert the technote at the specified timestamp location in the timeline.
Different technotes can have the same timestamp.

The first argument to create, <b>TECHNOTE-COMMENT</b>, is the title text for the technote
that appears in the timeline. 

To view all technotes, use the <b>wiki ls</b> command:

<verbatim>
fossil wiki ls --technote --show-technote-ids
z739263a134bf0da1d28e939f4c4367f51ef4c51 2020-12-19 13:20:19
e15a918a8bed71c2ac091d74dc397b8d3340d5e1 2018-09-22 17:40:10
</verbatim>

A technote ID is the UUID of the technote.

To view an individual technote, use the <b>wiki export</b> command:

<verbatim>
fossil wiki export --technote version-2.16
Release Notes 2021-07-02

This note describes changes in the Fossil snapshot for ...
</verbatim>

The <b>-t|--technote</b> option to the <b>export</b> subcommand takes one of
three identifiers: <b>DATETIME</b>; <b>TECHNOTE-ID</b>; and <b>TAG</b>.
See the [/help?cmd=wiki | wiki help] for specifics.

Users must have check-in privileges (permission "i") in order to
create or edit technotes.  In addition, users must have create-wiki
privilege (permission "f") to create new technotes and edit-wiki
privilege (permission "k") in order to edit existing technotes.

Technote content may be formatted as [/wiki_rules | Fossil wiki],
[/md_rules | Markdown], or plain text.
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#!/usr/bin/tclsh
#
# Run this to generate the FAQ
#
set cnt 1
proc faq {question answer} {
  set ::faq($::cnt) [list [string trim $question] [string trim $answer]]
  incr ::cnt
}

faq {
  What GUIs are available for fossil?
} {
  The fossil executable comes with a web-based GUI built in.  Just run:
  The fossil executable comes with a [./webui.wiki | web-based GUI] built in.
  Just run:

  <blockquote>
  <b>fossil ui</b> <i>REPOSITORY-FILENAME</i>
  </blockquote>
  <pre>
  <b>fossil [/help/ui|ui]</b> <i>REPOSITORY-FILENAME</i>
  </pre>

  And your default web browser should pop up and automatically point to
  the fossil interface.  (Hint:  You can omit the <i>REPOSITORY-FILENAME</i>
  if you are within an open check-out.)
}

faq {
  What is the difference between a "branch" and a "fork"?
} {
  This is a big question - too big to answer in a FAQ.  Please
  read the <a href="branching.wiki">Branching, Forking, Merging,
  and Tagging</a> document.
}


faq {
  How do I create a new branch in fossil?
  How do I create a new branch?
} {
  There are lots of ways:

  When you are checking in a new change using the <b>commit</b>
  When you are checking in a new change using the <b>[/help/commit|commit]</b>
  command, you can add the option  "--branch <i>BRANCH-NAME</i>" to
  make the change be the founding check-in for a new branch.  You can
  make the new check-in be the first check-in for a new branch.
  also add the "--bgcolor <i>COLOR</i>" option to give the branch a
  specific background color on timelines.

  If you want to create a new branch whose founding check-in is the
  If you want to create a new branch whose initial content is the
  same as an existing check-in, use this command:

  <blockquote>
  <b>fossil branch new</b> <i>BRANCH-NAME BASIS</i>
  </blockquote>
  <pre>
  <b>fossil [/help/branch|branch] new</b> <i>BRANCH-NAME BASIS</i>
  </pre>

  The <i>BRANCH-NAME</i> argument is the name of the new branch and the
  <i>BASIS</i> argument is the name of the check-in that the branch splits
  off from.

  If you already have a fork in your check-in tree and you want to convert
  that fork to a branch, you can do this from the web interface.
  First locate the check-in that you want to be
  the founding check-in of your branch on the timeline and click on its
  the initial check-in of your branch on the timeline and click on its
  link so that you are on the <b>ci</b> page.  Then find the "<b>edit</b>"
  link (near the "Commands:" label) and click on that.  On the 
  "Edit Check-in" page, check the box beside "Branching:" and fill in 
  link (near the "Commands:" label) and click on that.  On the
  "Edit Check-in" page, check the box beside "Branching:" and fill in
  the name of your new branch to the right and press the "Apply Changes"
  button.
}

faq {
  How do I tag a check-in?
} {
  There are several ways:

  When you are checking in a new change using the <b>[/help/commit|commit]</b>
  command, you can add a tag to that check-in using the
  "--tag <i>TAGNAME</i>" command-line option.  You can repeat the --tag
  option to give a check-in multiple tags.  Tags need not be unique.  So,
  for example, it is common to give every released version a "release" tag.

  If you want to add a tag to an existing check-in, you can use the
  <b>[/help/tag|tag]</b> command.  For example:

  <pre>
  <b>fossil [/help/branch|tag] add</b> <i>TAGNAME</i> <i>CHECK-IN</i>
  </pre>

  The CHECK-IN in the previous line can be any
  [./checkin_names.wiki | valid check-in name format].

  You can also add (and remove) tags from a check-in using the
  [./webui.wiki | web interface].  First locate the check-in that you
  want to tag on the timeline, then click on the link to go the detailed
  information page for that check-in.  Then find the "<b>edit</b>"
  link (near the "Commands:" label) and click on that.  There are
  controls on the edit page that allow new tags to be added and existing
  tags to be removed.
}

faq {
  How do I create a private branch that won't get pushed back to the
  main repository.
} {
  Use the <b>--private</b> command-line option on the 
  <b>commit</b> command.  The result will be a check-in which exists on
  your local repository only and is never pushed to other repositories.  
  All descendents of a private check-in are also private.
  
  Use the <b>--private</b> command-line option on the
  <b>commit</b> command.  The result will be a check-in which exists in
  your local repository only and is never pushed to other repositories.
  All descendants of a private check-in are also private.

  Unless you specify something different using the <b>--branch</b> and/or
  <b>--bgcolor</b> options, the new private check-in will be put on a branch
  named "private" with an orange background color.
  

  You can merge from the trunk into your private branch in order to keep
  your private branch in sync with the latest changes on the trunk.  Once
  you have everything in your private branch the way you want it, you can
  then merge your private branch back into the trunk and push.  Only the
  final merge operation will appear in other repositories.  It will seem
  as if all the changes that occurred on your private branch occurred in
  a single check-in.
  Of course, you can also keep your branch private forever simply
  by not merging the changes in the private branch back into the trunk.

  [./private.wiki | Additional information]
}

faq {
  How can I delete inappropriate content from my fossil repository?
} {
  See the article on [./shunning.wiki | "shunning"] for details.
}

faq {
  How do I make a clone of the fossil self-hosting repository?
} {
  Any of the following commands should work:

  <blockquote><pre>
  fossil  clone  http://www.fossil-scm.org/  fossil.fossil<br>
  fossil  clone  http://www2.fossil-scm.org/  fossil.fossil<br>
  fossil  clone  http://www.hwaci.com/cgi-bin/fossil  fossil.fossil
  </pre></blockquote>
  <pre>
  fossil [/help/clone|clone]  https://fossil-scm.org/  fossil.fossil
  fossil [/help/clone|clone]  https://www2.fossil-scm.org/  fossil.fossil
  fossil [/help/clone|clone]  https://www3.fossil-scm.org/site.cgi  fossil.fossil
  </pre>

  Once you have the repository cloned, you can open a local check-out
  as follows:

  <blockquote><pre>
  mkdir src; cd src; fossil open ../fossil.fossil
  </pre></blockquote>
  <pre>
  mkdir src; cd src; fossil [/help/open|open] ../fossil.fossil
  </pre>

  Thereafter you should be able to keep your local check-out up to date
  with the latest code in the public repository by typing:

  <blockquote><pre>
  fossil update
  </pre></blockquote>
  <pre>
  fossil [/help/update|update]
  </pre>
}

faq {
  How do I import or export content from and to other version control systems?
} {
  Please see [./inout.wiki | Import And Export]
}



#############################################################################
# Code to actually generate the FAQ
#
puts "<title>Fossil FAQ</title>"
puts "<title>Fossil FAQ</title>\n"
puts "<h1 align=\"center\">Frequently Asked Questions</h1>\n"
puts "<p>Note: See also <a href=\"qandc.wiki\">Questions and Criticisms</a>.\n"
puts "Note: See also <a href=\"qandc.wiki\">Questions and Criticisms</a>.\n"

puts {<ol>}
for {set i 1} {$i<$cnt} {incr i} {
  puts "<li><a href=\"#q$i\">[lindex $faq($i) 0]</a></li>"
}
puts {</ol>}
puts {<hr>}

for {set i 1} {$i<$cnt} {incr i} {
  puts "<a name=\"q$i\"></a>"
  puts "<p><b>($i) [lindex $faq($i) 0]</b></p>\n"
  puts "<p id=\"q$i\"><b>($i) [lindex $faq($i) 0]</b></p>\n"
  set body [lindex $faq($i) 1]
  regsub -all "\n *" [string trim $body] "\n" body
  puts "<blockquote>$body</blockquote></li>\n"
  puts "$body</li>\n"
}
puts {</ol>}
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<title>Fossil FAQ</title>
<h1 align="center">Frequently Asked Questions</h1>

<p>Note: See also <a href="qandc.wiki">Questions and Criticisms</a>.
Note: See also <a href="qandc.wiki">Questions and Criticisms</a>.

<ol>
<li><a href="#q1">What GUIs are available for fossil?</a></li>
<li><a href="#q2">What is the difference between a "branch" and a "fork"?</a></li>
<li><a href="#q3">How do I create a new branch in fossil?</a></li>
<li><a href="#q4">How do I create a private branch that won't get pushed back to the
<li><a href="#q3">How do I create a new branch?</a></li>
<li><a href="#q4">How do I tag a check-in?</a></li>
<li><a href="#q5">How do I create a private branch that won't get pushed back to the
  main repository.</a></li>
<li><a href="#q5">How can I delete inappropriate content from my fossil repository?</a></li>
<li><a href="#q6">How do I make a clone of the fossil self-hosting repository?</a></li>
<li><a href="#q6">How can I delete inappropriate content from my fossil repository?</a></li>
<li><a href="#q7">How do I make a clone of the fossil self-hosting repository?</a></li>
<li><a href="#q8">How do I import or export content from and to other version control systems?</a></li>
</ol>
<hr>
<a name="q1"></a>
<p><b>(1) What GUIs are available for fossil?</b></p>
<p id="q1"><b>(1) What GUIs are available for fossil?</b></p>

<blockquote>The fossil executable comes with a web-based GUI built in.  Just run:
The fossil executable comes with a [./webui.wiki | web-based GUI] built in.
Just run:

<blockquote>
<b>fossil ui</b> <i>REPOSITORY-FILENAME</i>
</blockquote>
<pre>
<b>fossil [/help/ui|ui]</b> <i>REPOSITORY-FILENAME</i>
</pre>

And your default web browser should pop up and automatically point to
the fossil interface.  (Hint:  You can omit the <i>REPOSITORY-FILENAME</i>
if you are within an open check-out.)</blockquote></li>
if you are within an open check-out.)</li>

<a name="q2"></a>
<p><b>(2) What is the difference between a "branch" and a "fork"?</b></p>
<p id="q2"><b>(2) What is the difference between a "branch" and a "fork"?</b></p>

<blockquote>This is a big question - too big to answer in a FAQ.  Please
This is a big question - too big to answer in a FAQ.  Please
read the <a href="branching.wiki">Branching, Forking, Merging,
and Tagging</a> document.</blockquote></li>
and Tagging</a> document.</li>

<a name="q3"></a>
<p><b>(3) How do I create a new branch in fossil?</b></p>
<p id="q3"><b>(3) How do I create a new branch?</b></p>

<blockquote>There are lots of ways:
There are lots of ways:

When you are checking in a new change using the <b>commit</b>
When you are checking in a new change using the <b>[/help/commit|commit]</b>
command, you can add the option  "--branch <i>BRANCH-NAME</i>" to
make the change be the founding check-in for a new branch.  You can
make the new check-in be the first check-in for a new branch.
also add the "--bgcolor <i>COLOR</i>" option to give the branch a
specific background color on timelines.

If you want to create a new branch whose founding check-in is the
If you want to create a new branch whose initial content is the
same as an existing check-in, use this command:

<blockquote>
<b>fossil branch new</b> <i>BRANCH-NAME BASIS</i>
</blockquote>
<pre>
<b>fossil [/help/branch|branch] new</b> <i>BRANCH-NAME BASIS</i>
</pre>

The <i>BRANCH-NAME</i> argument is the name of the new branch and the
<i>BASIS</i> argument is the name of the check-in that the branch splits
off from.

If you already have a fork in your check-in tree and you want to convert
that fork to a branch, you can do this from the web interface.
First locate the check-in that you want to be
the founding check-in of your branch on the timeline and click on its
the initial check-in of your branch on the timeline and click on its
link so that you are on the <b>ci</b> page.  Then find the "<b>edit</b>"
link (near the "Commands:" label) and click on that.  On the 
"Edit Check-in" page, check the box beside "Branching:" and fill in 
link (near the "Commands:" label) and click on that.  On the
"Edit Check-in" page, check the box beside "Branching:" and fill in
the name of your new branch to the right and press the "Apply Changes"
button.</blockquote></li>
button.</li>

<p id="q4"><b>(4) How do I tag a check-in?</b></p>
<a name="q4"></a>
<p><b>(4) How do I create a private branch that won't get pushed back to the

There are several ways:

When you are checking in a new change using the <b>[/help/commit|commit]</b>
command, you can add a tag to that check-in using the
"--tag <i>TAGNAME</i>" command-line option.  You can repeat the --tag
option to give a check-in multiple tags.  Tags need not be unique.  So,
for example, it is common to give every released version a "release" tag.

If you want to add a tag to an existing check-in, you can use the
<b>[/help/tag|tag]</b> command.  For example:

<pre>
<b>fossil [/help/branch|tag] add</b> <i>TAGNAME</i> <i>CHECK-IN</i>
</pre>

The CHECK-IN in the previous line can be any
[./checkin_names.wiki | valid check-in name format].

You can also add (and remove) tags from a check-in using the
[./webui.wiki | web interface].  First locate the check-in that you
want to tag on the timeline, then click on the link to go the detailed
information page for that check-in.  Then find the "<b>edit</b>"
link (near the "Commands:" label) and click on that.  There are
controls on the edit page that allow new tags to be added and existing
tags to be removed.</li>

<p id="q5"><b>(5) How do I create a private branch that won't get pushed back to the
  main repository.</b></p>

<blockquote>Use the <b>--private</b> command-line option on the 
<b>commit</b> command.  The result will be a check-in which exists on
your local repository only and is never pushed to other repositories.  
All descendents of a private check-in are also private.
Use the <b>--private</b> command-line option on the
<b>commit</b> command.  The result will be a check-in which exists in
your local repository only and is never pushed to other repositories.
All descendants of a private check-in are also private.

Unless you specify something different using the <b>--branch</b> and/or
<b>--bgcolor</b> options, the new private check-in will be put on a branch
named "private" with an orange background color.

You can merge from the trunk into your private branch in order to keep
your private branch in sync with the latest changes on the trunk.  Once
you have everything in your private branch the way you want it, you can
then merge your private branch back into the trunk and push.  Only the
final merge operation will appear in other repositories.  It will seem
as if all the changes that occurred on your private branch occurred in
a single check-in.
Of course, you can also keep your branch private forever simply
by not merging the changes in the private branch back into the trunk.</blockquote></li>
by not merging the changes in the private branch back into the trunk.

[./private.wiki | Additional information]</li>
<a name="q5"></a>
<p><b>(5) How can I delete inappropriate content from my fossil repository?</b></p>

<p id="q6"><b>(6) How can I delete inappropriate content from my fossil repository?</b></p>

<blockquote>See the article on [./shunning.wiki | "shunning"] for details.</blockquote></li>
See the article on [./shunning.wiki | "shunning"] for details.</li>

<a name="q6"></a>
<p><b>(6) How do I make a clone of the fossil self-hosting repository?</b></p>
<p id="q7"><b>(7) How do I make a clone of the fossil self-hosting repository?</b></p>

<blockquote>Any of the following commands should work:
<blockquote><pre>
fossil  clone  http://www.fossil-scm.org/  fossil.fossil<br>
fossil  clone  http://www2.fossil-scm.org/  fossil.fossil<br>
fossil  clone  http://www.hwaci.com/cgi-bin/fossil  fossil.fossil
</pre></blockquote>
Any of the following commands should work:

<pre>
fossil [/help/clone|clone]  https://fossil-scm.org/  fossil.fossil
fossil [/help/clone|clone]  https://www2.fossil-scm.org/  fossil.fossil
fossil [/help/clone|clone]  https://www3.fossil-scm.org/site.cgi  fossil.fossil
</pre>

Once you have the repository cloned, you can open a local check-out
as follows:

<blockquote><pre>
mkdir src; cd src; fossil open ../fossil.fossil
</pre></blockquote>
<pre>
mkdir src; cd src; fossil [/help/open|open] ../fossil.fossil
</pre>

Thereafter you should be able to keep your local check-out up to date
with the latest code in the public repository by typing:

<blockquote><pre>
fossil update
</pre></blockquote></blockquote></li>
<pre>
fossil [/help/update|update]
</pre></li>

<p id="q8"><b>(8) How do I import or export content from and to other version control systems?</b></p>

Please see [./inout.wiki | Import And Export]</li>

</ol>
Added www/fileedit-page.md.





























































































































































































































































































































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# The fileedit Page

This document describes the limitations of, caveats for, and
disclaimers for the [](/fileedit) page, which provides users with
 basic editing features for files via the web interface when they
 have [checkin privileges](./caps/index.md).

# Important Caveats and Disclaimers

Predictably, the ability to edit files in a repository from a web
browser halfway around the world comes with several obligatory caveats
and disclaimers...

## <a id="cap"></a> `/fileedit` Does *Nothing* by Default.

In order to "activate" it, a user with [the "setup"
permission](./caps/index.md) must set the
[fileedit-glob](/help?cmd=fileedit-glob) repository setting to a
comma- or newline-delimited list of globs representing a whitelist of
files which may be edited online. Any user with commit access may then
edit files matching one of those globs. Certain pages within the UI
get an "edit" link added to them when the current user's permissions
and the whitelist both permit editing of that file.

## <a id="csrf"></a> CSRF & HTTP Referrer Headers

In order to protect against [Cross-site Request Forgery (CSRF)][csrf]
attacks, Fossil UI features which write to the database require that
the browser send the so-called [HTTP `Referer` header][referer]
(noting that the misspelling of "referrer" is a historical accident
which has long-since been standardized!). Modern browsers, by default,
include such information automatically for *interactive* actions which
lead to a request, e.g. clicking on a link back to the same
server. However, `/fileedit` uses asynchronous ["XHR"][xhr]
connections, which browsers *may* treat differently than strictly
interactive elements.

- **Firefox**: configuration option `network.http.sendRefererHeader`
  specifies whether the `Referer` header is sent. It must have a value
  of 2 (which is the default) for XHR requests to get the `Referer`
  header. Purely interactive Fossil features, in which users directly
  activate links or forms, work with a level of 1 or higher.
- **Chrome**: apparently requires an add-on in order to change this
  policy, so Chrome without such an add-on will not suppress this
  header.
- **Safari**: ???
- **Other browsers**: ???

If `/fileedit` shows an error message saying "CSRF violation," the
problem is that the browser is not sending a `Referer` header to XHR
connections. Fossil does not offer a way to disable its CSRF
protections.

[referer]: https://en.wikipedia.org/wiki/HTTP_referer
[csrf]: https://en.wikipedia.org/wiki/Cross-site_request_forgery
[xhr]: https://en.wikipedia.org/wiki/XMLHttpRequest

## <a id="commit"></a> `/fileedit` **Works by Creating Commits**

Thus any edits made via that page become a normal part of the
repository.

## <a id="intent"></a> `/fileedit` is *Intended* for use with Embedded Docs

... and similar text files, and is most certainly
**not intended for editing code**.

Editing files with unusual syntax requirements, e.g. hard tabs in
makefiles, may break them. *You Have Been Warned.*

Similarly, though every effort is made to retain the end-of-line
style used by being-edited files, the round-trip through an HTML
textarea element may change the EOLs. The Commit section of the page
offers three different options for how to treat newlines when saving
changes. **Files with mixed EOL styles** *will be normalized to a single
EOL style* when modified using `/fileedit`. When "inheriting" the EOL
style from a previous version which has mixed styles, the first EOL
style detected in the previous version of the file is used.

## <a id="checkout"></a> `/fileedit` **is Not a Replacement for a Checkout**

A full-featured checkout allows far more possibilities than this basic
online editor permits, and the feature scope of `/fileedit` is
intentionally kept small, implementing only the bare necessities
needed for performing basic edits online. It *is not, and will never
be, a replacement for a checkout.*

It is to be expected that users will want to do "more" with this
page, and we generally encourage feature requests, but be aware that
certain types of ostensibly sensible feature requests *will be
rejected* for `/fileedit`. These include, but are not limited to:

- Features which are already provided by other pages, e.g.
the ability to create a new named branch or add tags.
- Features which would require re-implementing significant
capabilities provided only within a checkout (e.g. merging files).
- The ability to edit/manipulate files which are in a local
checkout. (If you have a checkout, use your local editor, not
`/fileedit`.)
- Editing of non-text files, e.g. images. Use a checkout and your
preferred graphics editor.
- Support for syncing/pulling/pushing of a repository before and/or
after edits. Those features cannot be *reliably* provided via a web
interface for several reasons.

Similarly, some *potential* features have significant downsides,
abuses, and/or implementation hurdles which make the decision of
whether or not to implement them subject to notable contributor
debate. e.g. the ability to add new files or remove/rename older
files.


## <a id="storage"></a> `/fileedit` **Stores Only Limited Local Edits While Working**

When changes are made to a given checkin/file combination,
`/fileedit` will, if possible, store them in [`window.localStorage`
or `window.sessionStorage`][html5storage], if available, but...

- Which storage is used is unspecified and may differ across
  environments.
- If neither of those is available, the storage is transient and
  will not survive a page reload. In this case, the UI issues a clear
  warning in the editor tab.
- It stores only the most recent checkin/file combinations which have
  been modified (exactly how many may differ - the number will be
  noted somewhere in the UI). Note that changing the "executable bit"
  is counted as a modification, but the checkin *comment* is *not*
  and is reset after a commit.
- If its internal limit on the number of modified files is exceeded,
  it silently discards the oldest edits to keep the list at its limit.

Edits are saved whenever the editor component fires its "change"
event, which essentially means as soon as it loses input focus. Thus
to force the browser to save any pending changes, simply click
somwhere on the page outside of the editor.

Exactly how long `localStorage` will survive, and how much it or
`sessionStorage` can hold, is environment-dependent. `sessionStorage`
will survive until the current browser tab is closed, but it survives
across reloads of the same tab.

If `/fileedit` determines that no persistent storage is available a
warning is displayed on the editor page.

[html5storage]: https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API

## <a id="power"></a> The Power is Yours, but...

> "With great power comes great responsibility."

**Use this feature judiciously, *if at all*.**

Now, with those warnings and caveats out of the way...

-----

# <a id="tips"></a> Tips and Tricks

## <a id="global-js"></a> `fossil` Global-scope JS Object

`/fileedit` is largely implemented in JavaScript, and makes heavy use
of the global-scope `fossil` object, which provides
infrastructure-level features intended for use by Fossil UI pages.
(That said, that infrastructure was introduced with `/fileedit`, and
most pages do not use it.)

The `fossil.page` object represents the UI's current page (on pages
which make use of this API - most do not). That object supports
listening to page-specific events so that JS code installed via
[client-side edits to the site skin's footer](customskin.md) may react
to those changes somehow. The next section describes one such use for
such events...

## <a id="syn-hl"></a> Integrating Syntax Highlighting

Assuming a repository has integrated a 3rd-party syntax highlighting
solution, it can probably (depending on its API) be told how to
highlight `/fileedit`'s wiki/markdown-format previews. Here are
instructions for doing so with [highlightjs](https://highlightjs.org/):

At the very bottom of the [site skin's footer](customskin.md), add a
script tag similar to the following:

```javascript
<script nonce="$<nonce>">
if(window.fossil && fossil.page && fossil.page.name==='fileedit'){
  fossil.page.addEventListener(
    'fileedit-preview-updated',
    (ev)=>{
     if(ev.detail.previewMode==='wiki'){
       ev.detail.element.querySelectorAll(
         'code[class^=language-]'
        ).forEach((e)=>hljs.highlightBlock(e));
     }
    }
  );
}
</script>
```

Note that the `nonce="$<nonce>"` part is intended to be entered
literally as shown above. It will be expanded to contain the current
request's nonce value when the page is rendered.

The first line of the script just ensures that the expected JS-level
infrastructure is loaded. It's only loaded in the `/fileedit` page and
possibly pages added or "upgraded" since `/fileedit`'s introduction.

The part in the `if` block adds an event listener to the `/fileedit`
app which gets called when the preview is refreshed. That event
contains 3 properties:

- `previewMode`: a string describing the current preview mode: `wiki`
  (which includes Fossil-native wiki and markdown), `text`,
  `htmlInline`, `htmlIframe`. We should "probably" only highlight wiki
  text, and thus the example above limits its work to that type of
  preview. It won't work with `htmlIframe`, as that represents an
  iframe element which contains a complete HTML document.
- `element`: the DOM element in which the preview is rendered.
- `mimetype`: the mimetype of the being-previewed content, as determined
  by Fossil (by its file extension).

The event listener callback shown above doesn't use the `mimetype`,
but makes use of the other two. It fishes all `code` blocks out of
the preview which explicitly have a CSS class named
`language-`something, and then asks highlightjs to highlight them.

## <a id="editor"></a> Integrating a Custom Editor Widget

(These instructions also work for the `/wikiedit` page by replacing
"fileedit" with "wikiedit" in any strings or symbol names!)

It is possible to replace `/fileedit`'s basic text-editing widget (a
`textarea` element) with a fancy 3rd-party editor widget by following
these instructions...

All JavaScript code which follows is assumed to be in a script tag
similar to the one shown in the previous section:

```javascript
<script nonce="$<nonce>">
if(window.fossil && fossil.page && fossil.page.name==='fileedit'){
  // code specific to the fileedit page goes here
}
</script>
```

First, install proxy functions so that `fossil.page.fileContent()`
can get and set your content:

```
fossil.page.setContentMethods(
  function(){ return text-form content of your widget },
  function(content){ set text-form content of your widget }
};
```

Secondly, we need to alert the editor app when there are changes so
that it can do things like store edits locally so that they are not
lost on a page reload. How that is done is completely dependent on the
3rd-party editor widget, but it generically looks something like:

```
myCustomWidget.on('eventName', ()=>fossil.page.notifyOfChange());
```

Lastly, if the 3rd-party editor does *not* hide or remove the native
editor widget, and does not inject itself into the DOM on the caller's
behalf, we can replace the native widget with the 3rd-party one with:

```javascript
fossil.page.replaceEditorWidget(yourNewWidgetElement);
```

That method must be passed a DOM element and may only be called once:
it *removes itself* the first time it is called.

That should be all there is to it. When `fossil.page` needs to get the
being-edited content, it will call the installed content-getter
function with no arguments, and when it sets the content (immediately
after (re)loading a file or grabbing local edits), it will pass that
content to the installed content-setter method. Those, in turn will
trigger the installed proxies and fire any relevant events.

Below is an example of Fossil skin footer content which plugs in the
TinyMCE HTML editor into the `/wikiedit` page, but the process is
identical for `/fileedit` (noting that `/fileedit` may need to be able
to edit multiple types of files for which a special-purpose editor
like TinyMCE may not be suitable). Note that any paths to CSS and JS
resources of course need to be modified to suit one's own
installation.

```
<!-- TinyMCE CSS and JS: -->
<link href="$<home>/doc/ckout/skin.min.css" rel="stylesheet" type="text/css">
<link href="$<home>/doc/ckout/content.min.css" rel="stylesheet" type="text/css">
<script src='$<home>/doc/ckout/tinymce.min.js'></script>
<script src='$<home>/doc/ckout/theme.min.js'></script>
<script src='$<home>/doc/ckout/icons.min.js'></script>
<!-- Integrate TinyMCE into /wikiedit: -->
<script nonce="$<nonce>">
if(window.fossil && window.fossil.page.name==='wikiedit'){
  window.fossil.onPageLoad( function(){
    const elemId = 'wikiedit-content-editor';
    tinymce.init({selector: 'textarea#'+elemId});
    const widget = tinymce.get(elemId);
    fossil.page.setContentMethods(
      function(){return widget.getContent()},
      function(content){widget.setContent(content)}
    );
    widget.on('change', function(){
      if(widget.isDirty()) fossil.page.notifyOfChange();
    });
  });
}
</script>
```
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<title>Fossil File Formats</title>
<h1 align="center">
Fossil File Formats
</h1>

The global state of a fossil repository is kept simple so that it can
endure in useful form for decades or centuries. 
endure in useful form for decades or centuries.
A fossil repository is intended to be readable,
searchable, and extensible by people not yet born.

The global state of a fossil repository is an unordered
set of <i>artifacts</i>.
An artifact might be a source code file, the text of a wiki page,
part of a trouble ticket, or one of several special control artifacts
used to show the relationships between other artifacts within the
project.  Each artifact is normally represented on disk as a separate
file.  Artifacts can be text or binary.
part of a trouble ticket, a description of a check-in including all
the files in that check-in with the check-in comment and so forth.
Artifacts are broadly grouped into two types: content artifacts and
structural artifacts.  Content artifacts are the raw project source-code
files that are checked into the repository.  Structural artifacts have
special formatting rules and are used to show the relationships between
other artifacts in the repository.  It is possible for an artifact to
be both a structure artifact and a content artifact, though this is
rare. Artifacts can be text or binary.

In addition to the global state, 
In addition to the global state,
each fossil repository also contains local state.
The local state consists of web-page formatting
preferences, authorized users, ticket display and reporting formats,
and so forth.  The global state is shared in common among all
repositories for the same project, whereas the local state is often
different in separate repositories.
The local state is not versioned and is not synchronized
with the global state.
The local state is not composed of artifacts and is not intended to be enduring.
This document is concerned with global state only.  Local state is only
mentioned here in order to distinguish it from global state.

<h2 id="names">1.0 Artifact Names</h2>

Each artifact in the repository is named by its SHA1 hash.
No prefixes or meta information is added to a artifact before
its hash is computed.  The name of a artifact in the repository
is exactly the same SHA1 hash that is computed by sha1sum 
on the file as it exists in your source tree.</p>
Each artifact in the repository is named by a hash of its content.
No prefixes, suffixes, or other information is added to an artifact before
the hash is computed.  The artifact name is just the (lower-case
hexadecimal) hash of the raw artifact.

Fossil currently computes artifact names using either SHA1 or SHA3-256.  It
is relatively easy to add new algorithms in the future, but there are no
plans to do so at this time.

When referring to artifacts in using tty commands or webpage URLs, it is
sufficient to specify a unique prefix for the artifact name.  If the input
prefix is not unique, Fossil will show an error.  Within a structural
artifact, however, all references to other artifacts must be the complete
hash.

Prior to Fossil version 2.0, all names were formed from the SHA1 hash of
the artifact.  The key innovation in Fossil 2.0 was adding support for
alternative hash algorithms.
Some artifacts have a particular format which gives them special
meaning to fossil.  Fossil recognizes:

<h2 id="structural">2.0 Structural Artifacts</h2>

A structural artifact is an artifact with a particular format
that is used to define the relationships between other artifacts in the
repository.
Fossil recognizes the following kinds of structural
artifacts:

<ul>
<li> [#manifest | Manifests] </li>
<li> [#cluster | Clusters] </li>
<li> [#ctrl | Control Artifacts] </li>
<li> [#wikichng | Wiki Pages] </li>
<li> [#tktchng | Ticket Changes] </li>
<li> [#attachment | Attachments] </li>
<li> [#event | TechNotes] </li>
<li> [#artifact | Artifacts] </li>
<li> [#forum | Forum Posts] </li>
</ul>

These five artifact types are described in the sequel.
These eight structural artifact types are described in subsections below.

Structural artifacts are UTF-8 text.  The artifact may be PGP clearsigned.
After removal of the PGP clearsign header and suffix (if any) a structural
artifact consists of one or more "cards" separated by a single newline
(ASCII: 0x0a) character. Each card begins with a single
character "card type".  Zero or more arguments may follow
the card type.  All arguments are separated from each other
and from the card-type character by a single space
character.  There is no surplus white space between arguments
and no leading or trailing whitespace except for the newline
character that acts as the card separator.  All cards must be in strict
lexicographical order (except for an
[./fileformat.wiki#outofordercards|historical bug compatibility]).
There may not be any duplicate cards.

In the current implementation (as of 2009-01-25) the artifacts that
make up a fossil repository are stored in in as delta- and zlib-compressed
In the current implementation (as of 2017-02-27) the artifacts that
make up a fossil repository are stored as delta- and zlib-compressed
blobs in an <a href="http://www.sqlite.org/">SQLite</a> database.  This
is an implementation detail and might change in a future release.  For
the purpose of this article "file format" means the format of the artifacts,
not how the artifacts are stored on disk.  It is the artifact format that
is intended to be enduring.  The specifics of how artifacts are stored on
disk, though stable, is not intended to live as long as the
artifact format.

<a name="manifest"></a>
<h2>1.0 The Manifest</h2>
<h3 id="manifest">2.1 The Manifest</h3>

A manifest defines a check-in or version of the project
source tree.  The manifest contains a list of artifacts for
A manifest defines a check-in.
A manifest contains a list of artifacts for
each file in the project and the corresponding filenames, as
well as information such as parent check-ins, the name of the
well as information such as parent check-ins, the username of the
programmer who created the check-in, the date and time when
the check-in was created, and any check-in comments associated
with the check-in.

Any artifact in the repository that follows the syntactic rules
of a manifest is a manifest.  Note that a manifest can
be both a real manifest and also a content file, though this
is rare.

A manifest is a text file.  Newline characters
(ASCII 0x0a) separate the file into "cards".
Each card begins with a single
character "card type".  Zero or more arguments may follow
the card type.  All arguments are separated from each other
and from the card-type character by a single space
character.  There is no surplus white space between arguments
and no leading or trailing whitespace except for the newline 
character that acts as the card separator.

All cards of the manifest occur in strict sorted lexicographical order.
No card may be duplicated.
The entire manifest may be PGP clear-signed, but otherwise it
may contain no additional text or data beyond what is described here.

Allowed cards in the manifest are as follows:

<blockquote>
<div class="indent">
<b>B</b> <i>baseline-manifest</i><br>
<b>C</b> <i>checkin-comment</i><br>
<b>D</b> <i>time-and-date-stamp</i><br>
<b>F</b> <i>filename</i> <i>SHA1-hash</i> <i>permissions</i> <i>old-name</i><br>
<b>P</b> <i>SHA1-hash</i>+<br>
<b>F</b> <i>filename</i> ?<i>hash</i>? ?<i>permissions</i>? ?<i>old-name</i>?<br>
<b>N</b> <i>mimetype</i><br>
<b>P</b> <i>artifact-hash</i>+<br>
<b>Q</b> (<b>+</b>|<b>-</b>)<i>artifact-hash</i> ?<i>artifact-hash</i>?<br>
<b>R</b> <i>repository-checksum</i><br>
<b>T</b> (<b>+</b>|<b>-</b>|<b>*</b>)<i>tag-name  <b>*</b> ?value?</i><br>
<b>T</b> (<b>+</b>|<b>-</b>|<b>*</b>)<i>tag-name</i> <b>*</b> ?<i>value</i>?<br>
<b>U</b> <i>user-login</i><br>
<b>Z</b> <i>manifest-checksum</i>
</div>
</blockquote>

A manifest may optionally have a single <b>B</b> card.  The <b>B</b> card specifies
another manifest that serves as the "baseline" for this manifest.  A
manifest that has a <b>B</b> card is called a delta-manifest and a manifest
that omits the <b>B</b> card is a baseline-manifest.  The other manifest
identified by the argument of the <b>B</b> card must be a baseline-manifest.
A baseline-manifest records the complete contents of a check-in.
A delta-manifest records only changes from its baseline.

A manifest must have exactly one C-card.  The sole argument to
the C-card is a check-in comment that describes the check-in that
A manifest must have exactly one <b>C</b> card.  The sole argument to
the <b>C</b> card is a check-in comment that describes the check-in that
the manifest defines.  The check-in comment is text.  The following
escape sequences are applied to the text:
A space (ASCII 0x20) is represented as "\s" (ASCII 0x5C, 0x73).  A
newline (ASCII 0x0a) is "\n" (ASCII 0x6C, x6E).  A backslash 
newline (ASCII 0x0a) is "\n" (ASCII 0x5C, x6E).  A backslash
(ASCII 0x5C) is represented as two backslashes "\\".  Apart from
space and newline, no other whitespace characters are allowed in
the check-in comment.  Nor are any unprintable characters allowed
in the comment.

A manifest must have exactly one D-card.  The sole argument to
the D-card is a date-time stamp in the ISO8601 format.  The
A manifest must have exactly one <b>D</b> card.  The sole argument to
the <b>D</b> card is a date-time stamp in the ISO8601 format.  The
date and time should be in coordinated universal time (UTC).
The format is:
The format one of:

<blockquote>
<i>YYYY</i><b>-</b><i>MM</i><b>-</b><i>DD</i><b>T</b><i>HH</i><b>:</b><i>MM</i><b>:</b><i>SS</i>
</blockquote>
<pre class="indent"><i>YYYY-MM-DD<b>T</b>HH:MM:SS
YYYY-MM-DD<b>T</b>HH:MM:SS.SSS</i></pre>

A manifest has zero or more F-cards.  Each F-card defines a file
(other than the manifest itself) which is part of the check-in that
A manifest has zero or more <b>F</b> cards.  Each <b>F</b> card identifies a file
that is part of the check-in.  There are one, two, three, or four
the manifest defines.  There are two, three, or four arguments.
The first argument
is the pathname of the file in the check-in relative to the root
of the project file hierarchy.  No ".." or "." directories are allowed
within the filename.  Space characters are escaped as in C-card
comment text.  Backslash characters and newlines are not allowed
within filenames.  The directory separator character is a forward
slash (ASCII 0x2F).  The second argument to the F-card is the
full 40-character lower-case hexadecimal SHA1 hash of the content
artifact.  The optional 3rd argument defines any special access 
permissions associated with the file.  The only special code currently
defined is "x" which means that the file is executable.  All files are
always readable and writable.  This can be expressed by "w" permission
if desired but is optional.
The optional 4th argument is the name of the same file as it existed in
the parent check-in.  If the name of the file is unchanged from its
parent, then the 4th argument is omitted.
arguments.  The first argument is the pathname of the file in the
check-in relative to the root of the project file hierarchy.  No ".."
or "." directories are allowed within the filename.  Space characters
are escaped as in <b>C</b> card comment text.  Backslash characters and
newlines are not allowed within filenames.  The directory separator
character is a forward slash (ASCII 0x2F).  The second argument to the
<b>F</b> card is the lower-case hexadecimal artifact hash of
the content artifact.  The second argument is required for baseline
manifests but is optional for delta manifests.  When the second
argument to the <b>F</b> card is omitted, it means that the file has been
deleted relative to the baseline (files removed in baseline manifests
versions are <em>not</em> added as <b>F</b> cards). The optional 3rd argument
defines any special access permissions associated with the file.  This
can be defined as "x" to mean that the file is executable or "l"
(small letter ell) to mean a symlink.  All files are always readable
and writable.  This can be expressed by "w" permission if desired but
is optional.  The file format might be extended with new permission
letters in the future.  The optional 4th argument is the name of the
same file as it existed in the parent check-in.  If the name of the
file is unchanged from its parent, then the 4th argument is omitted.

A manifest has zero or one <b>N</b> cards.  The <b>N</b> card specifies the mimetype for the
text in the comment of the <b>C</b> card.  If the <b>N</b> card is omitted, a default mimetype
is used.

A manifest has zero or one P-cards.  Most manifests have one P-card.
The P-card has a varying number of arguments that
defines other manifests from which the current manifest
is derived.  Each argument is an 40-character lowercase 
hexadecimal SHA1 of the predecessor manifest.  All arguments
to the P-card must be unique to that line.
The first predecessor is the direct ancestor of the manifest.
A manifest has zero or one <b>P</b> cards.  Most manifests have one <b>P</b> card.
The <b>P</b> card has a varying number of arguments that
define other manifests from which the current manifest
is derived.  Each argument is a lowercase
hexadecimal artifact hash of a predecessor manifest.  All arguments
to the <b>P</b> card must be unique within that card.
The first argument is the artifact hash of the direct ancestor of the manifest.
Other arguments define manifests with which the first was
merged to yield the current manifest.  Most manifests have
a P-card with a single argument.  The first manifest in the
project has no ancestors and thus has no P-card.
a <b>P</b> card with a single argument.  The first manifest in the
project has no ancestors and thus has no <b>P</b> card or (depending
on the Fossil version) an empty <b>P</b> card (no arguments).

A manifest has zero or more <b>Q</b> cards.  A <b>Q</b> card is similar to a <b>P</b> card
in that it defines a predecessor to the current check-in.  But
whereas a <b>P</b> card defines the immediate ancestor or a merge
ancestor, the <b>Q</b> card is used to identify a single check-in or a small
range of check-ins which were cherry-picked for inclusion in or
exclusion from the current manifest.  The first argument of
the <b>Q</b> card is the artifact ID of another manifest (the "target")
which has had its changes included or excluded in the current manifest.
The target is preceded by "+" or "-" to show inclusion or
exclusion, respectively.  The optional second argument to the
<b>Q</b> card is another manifest artifact ID which is the "baseline"
for the cherry-pick.  If omitted, the baseline is the primary
parent of the target.  The
changes included or excluded consist of all changes moving from
the baseline to the target.

The <b>Q</b> card was added to the interface specification on 2011-02-26.
Older versions of Fossil will reject manifests that contain <b>Q</b> cards.

A manifest may optionally have a single R-card.  The R-card has
a single argument which is the MD5 checksum of all files in 
A manifest may optionally have a single <b>R</b> card.  The <b>R</b> card has
a single argument which is the MD5 checksum of all files in
the check-in except the manifest itself.  The checksum is expressed
as 32-characters of lowercase hexadecimal.   The checksum is
as 32 characters of lowercase hexadecimal.   The checksum is
computed as follows:  For each file in the check-in (except for
the manifest itself) in strict sorted lexicographical order, 
the manifest itself) in strict sorted lexicographical order,
take the pathname of the file relative to the root of the
repository, append a single space (ASCII 0x20), the
size of the file in ASCII decimal, a single newline
character (ASCII 0x0A), and the complete text of the file.
Compute the MD5 checksum of the the result.
Compute the MD5 checksum of the result.

A manifest might contain one or more T-cards used to set tags or
properties on the check-in.  The format of the T-card is the same as
A manifest might contain one or more <b>T</b> cards used to set
[./branching.wiki#tags | tags or properties]
on the check-in.  The format of the <b>T</b> card is the same as
described in <i>Control Artifacts</i> section below, except that the
second argument is the single characcter "<b>*</b>" instead of an
second argument is the single character "<b>*</b>" instead of an
artifact ID.  The <b>*</b> in place of the artifact ID indicates that
the tag or property applies to the current artifact.  It is not
possible to encode the current artifact ID as part of an artifact,
since the act of inserting the artifact ID would change the artifact ID,
hence a <b>*</b> is used to represent "self".  T-cards are typically
hence a <b>*</b> is used to represent "self".  <b>T</b> cards are typically
added to manifests in order to set the <b>branch</b> property and a
symbolic name when the check-in is intended to start a new branch.

Each manifest has a single U-card.  The argument to the U-card is
Each manifest has a single <b>U</b> card.  The argument to the <b>U</b> card is
the login of the user who created the manifest.  The login name
is encoded using the same character escapes as is used for the
check-in comment argument to the C-card.
check-in comment argument to the <b>C</b> card.

A manifest has an option Z-card as its last line.  The argument
to the Z-card is a 32-character lowercase hexadecimal MD5 hash
of all prior lines of the manifest up to and including the newline 
character that immediately precedes the "Z".  The Z-card is just
A manifest must have a single <b>Z</b> card as its last line.  The argument
to the <b>Z</b> card is a 32-character lowercase hexadecimal MD5 hash
of all prior lines of the manifest up to and including the newline
character that immediately precedes the "Z", excluding any PGP
clear-signing prefix.  The <b>Z</b> card is
a sanity check to prove that the manifest is well-formed and
consistent.

A sample manifest from Fossil itself can be seen
[/artifact/28987096ac | here].

<a name="cluster"></a>
<h2>2.0 Clusters</h2>
<h3 id="cluster">2.2 Clusters</h3>

A cluster is a artifact that declares the existence of other artifacts.
Clusters are used during repository synchronization to help 
A cluster is an artifact that declares the existence of other artifacts.
Clusters are used during repository synchronization to help
reduce network traffic.  As such, clusters are an optimization and
may be removed from a repository without loss or damage to the
underlying project code.

Clusters follow a syntax that is very similar to manifests.
A Cluster is a line-oriented text file.  Newline characters
(ASCII 0x0a) separate the artifact into cards.  Each card begins with a single
character "card type".  Zero or more arguments may follow
the card type.  All arguments are separated from each other
and from the card-type character by a single space
character.  There is no surplus white space between arguments
and no leading or trailing whitespace except for the newline 
character that acts as the card separator.
All cards of a cluster occur in strict sorted lexicographical order.
No card may be duplicated.
The cluster may not contain additional text or data beyond 
what is described here.
Unlike manifests, clusters are never PGP signed.

Allowed cards in the cluster are as follows:

<blockquote>
<div class="indent">
<b>M</b> <i>artifact-id</i><br />
<b>Z</b> <i>checksum</i>
</blockquote>
</div>

A cluster contains one or more "M" cards followed by a single "Z"
line.  Each M card has a single argument which is the artifact ID of 
another artifact in the repository.  The Z card work exactly like
the Z card of a manifest.  The argument to the Z card is the
A cluster contains one or more <b>M</b> cards followed by a single <b>Z</b> card.
Each <b>M</b> card has a single argument which is the artifact ID of
another artifact in the repository.  The <b>Z</b> card works exactly like
the <b>Z</b> card of a manifest.  The argument to the <b>Z</b> card is the
lower-case hexadecimal representation of the MD5 checksum of all
prior cards in the cluster.  Note that the Z card is required
prior cards in the cluster.  The <b>Z</b> card is required.
on a cluster.

An example cluster from Fossil can be seen
[/artifact/d03dbdd73a2a8 | here].

<a name="ctrl"></a>
<h2>3.0 Control Artifacts</h2>
<h3 id="ctrl">2.3 Control Artifacts</h3>

Control artifacts are used to assign properties to other artifacts
within the repository.  The basic format of a control artifact is
within the repository.
the same as a manifest or cluster.  A control artifact is a text
files divided into cards by newline characters.  Each card has a
single-character card type followed by arguments.  Spaces separate
the card type and the arguments.  No surplus whitespace is allowed.
All cards must occur in strict lexigraphical order.

Allowed cards in a control artifact are as follows:

<blockquote>
<div class="indent">
<b>D</b> <i>time-and-date-stamp</i><br />
<b>T</b> (<b>+</b>|<b>-</b>|<b>*</b>)<i>tag-name  artifact-id  ?value?</i><br />
<b>T</b> (<b>+</b>|<b>-</b>|<b>*</b>)<i>tag-name</i> <i>artifact-id</i> ?<i>value</i>?<br />
<b>U</b> <i>user-name</i><br />
<b>Z</b> <i>checksum</i><br />
</blockquote>
</div>

A control artifact must have one D card and one Z card and
one or more T cards.  No other cards or other text is
A control artifact must have one <b>D</b> card, one <b>U</b> card, one <b>Z</b> card and
one or more <b>T</b> cards.  No other cards or other text is
allowed in a control artifact.  Control artifacts might be PGP
clearsigned.

The D card and the Z card of a control artifact are the same
The <b>D</b> card and the <b>Z</b> card of a control artifact are the same
as in a manifest.

The <b>T</b> card represents a [./branching.wiki#tags | tag or property]
The T card represents a "tag" or property that is applied to
some other artifact.  The T card has two or three values.  The
second argument is the 40 character lowercase artifact ID of the artifact
that is applied to
some other artifact.  The <b>T</b> card has two or three values.  The
second argument is the lowercase artifact ID of the artifact
to which the tag is to be applied. The
first value is the tag name.  The first character of the tag
is either "+", "-", or "*".  A "+" means the tag should be added
is either "+", "-", or "*".  The "+" means the tag should be added
to the artifact.  The "-" means the tag should be removed.
The "*" character means the tag should be added to the artifact
and all direct descendants (but not branches) of the artifact down
to but not including the first descendant that contains a 
more recent "-" tag with the same name.
and all direct descendants (but not descendants through a merge) down
to but not including the first descendant that contains a
more recent "-", "*", or "+" tag with the same name.
The optional third argument is the value of the tag.  A tag
without a value is a boolean.
without a value is a Boolean.

When two or more tags with the same name are applied to the
same artifact, the tag with the latest (most recent) date is
used.

Some tags have special meaning.  The "comment" tag when applied
to a check-in will override the check-in comment of that check-in
for display purposes.  The "user" tag overrides the name of the
check-in user.  The "date" tag overrides the check-in date.
The "branch" tag sets the name of the branch that at check-in
belongs to.  Symbolic tags begin with the "sym-" prefix.

The U card is the name of the user that created the control 
artifact.  The Z card is the usual artifact checksum.
The <b>U</b> card is the name of the user that created the control
artifact.  The <b>Z</b> card is the usual required artifact checksum.

An example control artifacts can be seen [/info/9d302ccda8 | here].
An example control artifact can be seen [/info/9d302ccda8 | here].


<a name="wikichng"></a>
<h2>4.0 Wiki Pages</h2>
<h3 id="wikichng">2.4 Wiki Pages</h3>

A wiki artifact defines a single version of a
A wiki page is an artifact with a format similar to manifests,
single wiki page.
clusters, and control artifacts.  The artifact is divided into
cards by newline characters.  The format of each card is as in
manifests, clusters, and control artifacts.  Wiki artifacts accept
Wiki artifacts accept
the following card types:

<blockquote>
<div class="indent">
<b>C</b> <i>change-comment</i><br>
<b>D</b> <i>time-and-date-stamp</i><br />
<b>L</b> <i>wiki-title</i><br />
<b>N</b> <i>mimetype</i><br />
<b>P</b> <i>parent-artifact-id</i>+<br />
<b>U</b> <i>user-name</i><br />
<b>W</b> <i>size</i> <b>\n</b> <i>text</i> <b>\n</b><br />
<b>Z</b> <i>checksum</i>
</blockquote>
</div>

The D card is the date and time when the wiki page was edited.
The P card specifies the parent wiki pages, if any.  The L card
gives the name of the wiki page.  The U card specifies the login
of the user who made this edit to the wiki page.  The Z card is
the usual checksum over the either artifact.
The <b>D</b> card is the date and time when the wiki page was edited.
The <b>P</b> card specifies the parent wiki pages, if any.  The <b>L</b> card
gives the name of the wiki page.  The optional <b>N</b> card specifies
the mimetype of the wiki text.  If the <b>N</b> card is omitted, the
mimetype is assumed to be text/x-fossil-wiki.
The <b>U</b> card specifies the login
of the user who made this edit to the wiki page.  The <b>Z</b> card is
the usual checksum over the entire artifact and is required.

The W card is used to specify the text of the wiki page.  The
argument to the W card is an integer which is the number of bytes
The <b>W</b> card is used to specify the text of the wiki page.  The
argument to the <b>W</b> card is an integer which is the number of bytes
of text in the wiki page.  That text follows the newline character
that terminates the W card.  The wiki text is always followed by one
that terminates the <b>W</b> card.  The wiki text is always followed by one
extra newline.

The <b>C</b> card on a wiki page is optional.  The argument is a comment
that explains why the changes were made.  The ability to have a <b>C</b>
card on a wiki page artifact was added on 2019-12-02 at the suggestion
of user George Krivov and is not currently used or generated by the 
implementation. Older versions of Fossil will reject a wiki-page
artifact that includes a <b>C</b> card.

An example wiki artifact can be seen
[/artifact/7b2f5fd0e0 | here].
[/artifact?name=7b2f5fd0e0&txt=1 | here].

<a name="tktchng"></a>
<h2>5.0 Ticket Changes</h2>
<h3 id="tktchng">2.5 Ticket Changes</h3>

A ticket-change artifact represents a change to a trouble ticket.
The following cards are allowed on a ticket change artifact:

<blockquote>
<div class="indent">
<b>D</b> <i>time-and-date-stamp</i><br />
<b>J</b> ?<b>+</b>?<i>name</i> ?<i>value</i>?<br />
<b>K</b> <i>ticket-id</i><br />
<b>U</b> <i>user-name</i><br />
<b>Z</b> <i>checksum</i>
</blockquote>
</div>

The D card is the usual date and time stamp and represents the point
in time when the change was entered.  The U card is the login of the
programmer who entered this change.  The Z card is the checksum over
The <b>D</b> card is the usual date and time stamp and represents the point
in time when the change was entered.  The <b>U</b> card is the login of the
programmer who entered this change.  The <b>Z</b> card is the required checksum over
the entire artifact.

Every ticket has a unique ID.  The ticket to which this change is applied
is specified by the K card.  A ticket exists if it contains one or
Every ticket has a distinct ticket-id:
40-character lower-case hexadecimal number.
The ticket-id is given in the <b>K</b> card.  A ticket exists if it contains one or
more changes.  The first "change" to a ticket is what brings the
ticket into existence.

J cards specify changes to the "value" of "fields" in the ticket.
If the <i>value</i> parameter of the J card is omitted, then the
<b>J</b> cards specify changes to the "value" of "fields" in the ticket.
If the <i>value</i> parameter of the <b>J</b> card is omitted, then the
field is set to an empty string.
Each fossil server has a ticket configuration which specifies the fields its
Each fossil server has a ticket configuration which specifies the fields it
understands.  The ticket configuration is part of the local state for
the repository and thus can vary from one repository to another.
Hence a J card might specify a <i>field</i> that do not exist in the 
local ticket configuration.  If a J card specifies a <i>field</i> that
is not in the local configuration, then that J card
Hence a <b>J</b> card might specify a <i>field</i> that does not exist in the
local ticket configuration.  If a <b>J</b> card specifies a <i>field</i> that
is not in the local configuration, then that <b>J</b> card
is simply ignored.

The first argument of the J card is the field name.  The second
The first argument of the <b>J</b> card is the field name.  The second
value is the field value.  If the field name begins with "+" then
the value is appended to the prior value.  Otherwise, the value
on the J card replaces any previous value of the field.
on the <b>J</b> card replaces any previous value of the field.
The field name and value are both encoded using the character
escapes defined for the C card of a manifest.
escapes defined for the <b>C</b> card of a manifest.

An example ticket-change artifact can be seen
[/artifact/91f1ec6af053 | here].

<a name="attachment"></a>
<h3 id="attachment">2.6 Attachments</h3>
<h2>6.0 Attachments</h2>

An attachment artifact associates some other artifact that is the
attachment (the source artifact) with a ticket or wiki page to which
attachment (the source artifact) with a ticket or wiki page or
technical note to which
the attachment is connected (the target artifact).
The following cards are allowed on an attachment artifact:

<blockquote>
<b>A</b> <i>filename target</i> ?<i>source</i>?
<b>C</b> <i>comment</i><br>
<div class="indent">
<b>A</b> <i>filename target</i> ?<i>source</i>?<br />
<b>C</b> <i>comment</i><br />
<b>D</b> <i>time-and-date-stamp</i><br />
<b>N</b> <i>mimetype</i><br />
<b>U</b> <i>user-name</i><br />
<b>Z</b> <i>checksum</i>
</blockquote>
</div>

The A card specifies a filename for the attachment in its first argument.
The second argument to the A card is the name
of the wiki page or ticket to which the attachment is connected.  The
third argument is either missing or else it is the 40-character artifact 
The <b>A</b> card specifies a filename for the attachment in its first argument.
The second argument to the <b>A</b> card is the name of the wiki page or
ticket or technical note to which the attachment is connected.  The
third argument is either missing or else it is the lower-case artifact
ID of the attachment itself.  A missing third argument means that the
attachment should be deleted.

The C card is an optional comment describing what the attachment is about.
The C card is optional, but there can only be one.
The <b>C</b> card is an optional comment describing what the attachment is about.
The <b>C</b> card is optional, but there can only be one.

A single D card is required to give the date and time when the attachment
A single <b>D</b> card is required to give the date and time when the attachment
was applied.

There may be zero or one <b>N</b> cards.  The <b>N</b> card specifies the mimetype of the
comment text provided in the <b>C</b> card.  If the <b>N</b> card is omitted, the <b>C</b> card
mimetype is taken to be text/plain.

A single U card gives the name of the user to added the attachment.
If an attachment is added anonymously, then the U card may be omitted.
A single <b>U</b> card gives the name of the user who added the attachment.
If an attachment is added anonymously, then the <b>U</b> card may be omitted.

The Z card is the usual checksum over the rest of the attachment artifact.
The <b>Z</b> card is the usual checksum over the rest of the attachment artifact.
The <b>Z</b> card is required.


<h3 id="event">2.7 Technical Notes</h3>
<a name="summary"></a>
<h2>7.0 Card Summary</h2>

A technical note or "technote" artifact (formerly known as an "event" artifact)
associates a timeline comment and a page of text
(similar to a wiki page) with a point in time.  Technotes can be used
to record project milestones, release notes, blog entries, process
checkpoints, or news articles.
The following cards are allowed on a technote artifact:

<div class="indent">
<b>C</b> <i>comment</i><br>
<b>D</b> <i>time-and-date-stamp</i><br />
<b>E</b> <i>technote-time</i> <i>technote-id</i><br />
<b>N</b> <i>mimetype</i><br />
<b>P</b> <i>parent-artifact-id</i>+<br />
<b>T</b> <b>+</b><i>tag-name</i> <b>*</b> ?<i>value</i>?<br />
<b>U</b> <i>user-name</i><br />
<b>W</b> <i>size</i> <b>\n</b> <i>text</i> <b>\n</b><br />
<b>Z</b> <i>checksum</i>
</div>

The <b>C</b> card contains text that is displayed on the timeline for the
technote.  The <b>C</b> card is optional, but there can only be one.

A single <b>D</b> card is required to give the date and time when the
technote artifact was created.  This is different from the time at which
the technote appears on the timeline.

A single <b>E</b> card gives the time of the technote (the point on the timeline
where the technote is displayed) and a unique identifier for the technote.
When there are multiple artifacts with the same technote-id, the one with
the most recent <b>D</b> card is the only one used.  The technote-id must be a
40-character lower-case hexadecimal string.

The optional <b>N</b> card specifies the mimetype of the text of the technote
that is contained in the <b>W</b> card.  If the <b>N</b> card is omitted, then the
<b>W</b> card text mimetype is assumed to be text/x-fossil-wiki, which is the
Fossil wiki format.

The optional <b>P</b> card specifies a prior technote with the same technote-id
from which the current technote is an edit.  The <b>P</b> card is a hint to the
system that it might be space efficient to store one technote as a delta of
the other.

A technote might contain one or more <b>T</b> cards used to set
[./branching.wiki#tags | tags or properties]
on the technote.  The format of the <b>T</b> card is the same as
described in [#ctrl | Control Artifacts] section above, except that the
second argument is the single character "<b>*</b>" instead of an
artifact ID and the name is always prefaced by "<b>+</b>".
The <b>*</b> in place of the artifact ID indicates that
the tag or property applies to the current artifact.  It is not
possible to encode the current artifact ID as part of an artifact,
since the act of inserting the artifact ID would change the artifact ID,
hence a <b>*</b> is used to represent "self".  The "<b>+</b>" on the
name means that tags can only be "add" and they can only be non-propagating
tags.  In a technote, <b>T</b> cards are normally used to set the background
display color for timelines.

The optional <b>U</b> card gives the name of the user who entered the technote.

A single <b>W</b> card provides wiki text for the document associated with the
technote.  The format of the <b>W</b> card is exactly the same as for a
[#wikichng | wiki artifact].

The <b>Z</b> card is the required checksum over the rest of the artifact.

<h3 id="forum">2.8 Forum Posts</h3>

Forum posts are intended as a mechanism for users and developers to
discuss a project.  Forum posts are like messages on a mailing list.

The following cards are allowed on an forum post artifact:
The following table summaries the various kinds of cards that
appear on Fossil artifacts:

<div class="indent">
<b>D</b> <i>time-and-date-stamp</i><br />
<b>G</b> <i>thread-root</i><br />
<b>H</b> <i>thread-title</i><br />
<b>I</b> <i>in-reply-to</i><br />
<b>N</b> <i>mimetype</i><br />
<b>P</b> <i>parent-artifact-id</i><br />
<b>U</b> <i>user-name</i><br />
<b>W</b> <i>size</i> <b>\n</b> <i>text</i> <b>\n</b><br />
<b>Z</b> <i>checksum</i>
</div>

Every forum post must have either one <b>I</b> card and one <b>G</b> card
or one <b>H</b> card.
Forum posts are organized into topic threads.  The initial
post for a thread (the root post) has an <b>H</b> card giving the title or
subject for that thread.  The argument to the <b>H</b> card is a string
in the same format as a comment string in a <b>C</b> card.
All follow-up posts have an <b>I</b> card that
indicates which prior post in the same thread the current forum
post is replying to, and a <b>G</b> card specifying the root post for
the entire thread.  The argument to <b>G</b> and <b>I</b> cards is the
artifact hash for the prior forum post to which the card refers.

In theory, it is sufficient for follow-up posts to have only an
<b>I</b> card, since the <b>G</b> card value could be computed by following a
chain of <b>I</b> cards.  However, the <b>G</b> card is required in order to
associate the artifact with a forum thread in the case where an
intermediate artifact in the <b>I</b> card chain is shunned or otherwise
becomes unreadable.
<table border=1 width="100%">
<tr>
<th rowspan=2 valign=bottom>Card Format</th>
<th colspan=6>Used By</th>
</tr>

A single <b>D</b> card is required to give the date and time when the
forum post was created.

The optional <b>N</b> card specifies the mimetype of the text of the technote
that is contained in the <b>W</b> card.  If the <b>N</b> card is omitted, then the
<b>W</b> card text mimetype is assumed to be text/x-fossil-wiki, which is the
Fossil wiki format.

The optional <b>P</b> card specifies a prior forum post for which this
forum post is an edit.  For display purposes, only the child post
is shown, though the historical post is retained as a record.
If <b>P</b> cards are used and there exist multiple versions of the same
forum post, then <b>I</b> cards for other artifacts refer to whichever
version of the post was current at the time the reply was made,
but <b>G</b> cards refer to the initial, unedited root post for the thread.
Thus, following the chain of <b>I</b> cards back to the root of the thread
may land on a different post than the one given in the <b>G</b> card.
However, following the chain of <b>I</b> cards back to the thread root,
then following <b>P</b> cards back to the initial version of the thread
root must give the same artifact as is provided by the <b>G</b> card,
otherwise the artifact containing the <b>G</b> card is considered invalid
and should be ignored.

In general, <b>P</b> cards may contain multiple arguments, indicating a
merge.  But since forum posts cannot be merged, the
<b>P</b> card of a forum post may only contain a single argument.

The <b>U</b> card gives name of the user who entered the forum post.

A single <b>W</b> card provides wiki text for the forum post.
The format of the <b>W</b> card is exactly the same as for a
[#wikichng | wiki artifact].

The <b>Z</b> card is the required checksum over the rest of the artifact.


<h2 id="summary">3.0 Card Summary</h2>

The following table summarizes the various kinds of cards that appear
on Fossil artifacts. A blank entry means that combination of card and
artifact is not legal. A number or range of numbers indicates the number
of times a card may (or must) appear in the corresponding artifact type.
e.g. a value of 1 indicates a required unique card and 1+ indicates that one
or more such cards are required.

<table>
<tr>
<th>⇩ Card Format / Used By ⇨</th>
<th>Manifest</th>
<th>Cluster</th>
<th>Control</th>
<th>Wiki</th>
<th>Ticket</th>
<th>Attachment</th>
<th>Technote</th>
<th>Forum</th>
</tr>
<tr>
<td><b>A</b> <i>filename target source</i></td>
<td><b>A</b> <i>filename</i> <i>target</i> ?<i>source</i>?</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>C</b> <i>coment-text</i></td>
<td align=center><b>X</b></td>
<td><b>B</b> <i>baseline</i></td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>C</b> <i>comment-text</i></td>
<td align=center><b>X</b></td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>D</b> <i>date-time-stamp</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
</tr>
<tr>
<td><b>F</b> <i>filename uuid permissions oldname</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td><b>E</b> <i>technote-time technote-id</i></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>F</b> <i>filename</i> ?<i>uuid</i>? ?<i>permissions</i>? ?<i>oldname</i>?</td>
<td align=center><b>0+</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>G</b> <i>thread-root</i></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
</tr>
<tr>
<td><b>H</b> <i>thread-title</i></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b><sup><nowiki>[4]</nowiki></sup></td>
</tr>
<tr>
<td><b>I</b> <i>in-reply-to</i></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b><sup><nowiki>[4]</nowiki></sup></td>
</tr>
<tr>
<td><b>J</b> <i>name value</i></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td><b>J</b> <i>name</i> ?<i>value</i>?</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>1+</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>K</b> <i>ticket-uuid</i></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>L</b> <i>wiki-title</i></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>M</b> <i>uuid</i></td>
<td>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>1+</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>N</b> <i>mimetype</i></td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td align=center><b>0-1</b></td>
<td align=center><b>0-1</b></td>
</tr>
<tr>
<td><b>P</b> <i>uuid ...</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td align=center><b>0-1</b><sup><nowiki>[5]</nowiki></sup></td>
</tr>
<tr>
<td><b>Q</b> (<b>+</b>|<b>-</b>)<i>uuid</i> ?<i>uuid</i>?</td>
<td align=center><b>0+</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>R</b> <i>md5sum</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>0-1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td><b>T</b> (<b>+</b>|<b>*</b>|<b>-</b>)<i>tagname uuid value</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td><b>T</b> (<b>+</b>|<b>*</b>|<b>-</b>)<i>tagname</i> <i>uuid</i> ?<i>value</i>?<sup><nowiki>[1]</nowiki></sup></td>
<td align=center><b>0+</b></td>
<td>&nbsp;</td>
<td align=center><b>1+</b><sup><nowiki>[2]</nowiki></sup></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>0+</b><sup><nowiki>[3]</nowiki></sup></td>
<td>&nbsp;</td>
</tr>
<tr>
<td><b>U</b> <i>username</i></td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>0-1</b></td>
<td align=center><b>0-1</b></td>
<td align=center><b>1</b></td>
</tr>
<tr>
<td><b>W</b> <i>size</i></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td align=center><b>X</b></td>
<td align=center>&nbsp;</td>
<td align=center>&nbsp;</td>
<td><b>W</b> <i>size</i> <b>\n</b> <i>text</i> <b>\n</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
</tr>
<tr>
<td><b>Z</b> <i>md5sum</i></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>X</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
<td align=center><b>1</b></td>
</tr>
</table>

Footnotes:

1) T-card names may not be made up of only hexadecimal characters, as
   they would be indistinguishable from a hash prefix.

2) Tags in [#ctrl | Control Artifacts] may not be
   self-referential. i.e. their target hash may not be <tt>*</tt>.

3) Tags in [#event | Technotes] must be self-referential. i.e. their
   target hash must be <tt>*</tt>. Similarly, technote tags may only
   be non-propagating "add" tags. i.e. their name prefix must be
   <tt>+</tt>.

4) [#forum | Forum Posts] must have either one H-card or one
   I-card, not both.

5) [#forum | Forum Post] P-cards may have only a single parent
   hash. i.e. they may not have merge parents.

<h2 id="addenda">4.0 Addenda</h2>

This section contains additional information which may be useful when
implementing algorithms described above.

<h3 id="outofordercards">4.1 Relaxed Card Ordering Due To An Historical Bug</h3>

All cards of a structural artifact should be in lexicographical order.
The Fossil implementation verifies this and rejects any structural
artifact which has out-of-order cards.  Futhermore, when Fossil is
generating new structural artifacts, it runs the generated artifact
through the parser to confirm that all cards really are in the correct
order before committing the transaction.  In this way, Fossil prevents
bugs in the code from accidentally inserting misformatted artifacts.
The test parse of newly created artifacts is part of the
[./selfcheck.wiki|self-check strategy] of Fossil.  It takes a
few more CPU cycles to double check each artifact before inserting it.
The developers consider those CPU cycles well-spent.

However, the card-order safety check was accidentally disabled due to
[15d04de574383d61|a bug].
And while that bug was lurking undetected in the code,
[5e67a7f4041a36ad|another bug] caused the N cards of Technical Notes
to occur after the P card rather than before.
Thus for a span of several years, Technical Note artifacts were being
inserted into Fossil repositories that had their N and P cards in the
wrong order.

Both bugs have now been fixed.  However, to prevent historical
Technical Note artifacts that were inserted by users in good faith
from being rejected by newer Fossil builds, the card ordering
requirement is relaxed slightly.  The actual implementation is this:

<p class=blockquote>
"All cards must be in strict lexicographic order, except that the
N and P cards of a Technical Note artifact are allowed to be
interchanged."
</p>

Future versions of Fossil might strengthen this slightly to only allow
the out of order N and P cards for Technical Notes entered before
a certain date.

<h3>4.2 R-Card Hash Calculation</h3>

Given a manifest file named <tt>MF</tt>, the following Bash shell code
demonstrates how to compute the value of the <b>R</b> card in that manifest.
This example uses manifest [28987096ac]. Lines starting with <tt>#</tt> are
shell input and other lines are output. This demonstration assumes that the
file versions represented by the input manifest are checked out
under the current directory.

<nowiki><pre>
# head MF
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

C Make\sthe\s"clearsign"\sPGP\ssigning\sdefault\sto\soff.
D 2010-02-23T15:33:14
F BUILD.txt 4f7988767e4e48b29f7eddd0e2cdea4555b9161c
F COPYRIGHT-GPL2.txt 06877624ea5c77efe3b7e39b0f909eda6e25a4ec
...

# grep '^R ' MF
R c0788982781981c96a0d81465fec7192

# for i in $(awk '/^F /{print $2}' MF); do \
  echo $i $(stat -c '%s' $i); \
  cat $i; \
done | md5sum
c0788982781981c96a0d81465fec7192  -
</pre></nowiki>

Minor caveats: the above demonstration will work only when none of the
filenames in the manifest are "fossilized" (encoded) because they contain
spaces. In that case the shell-generated hash would differ because the
<tt>stat</tt> calls will fail to find such files (which are output in encoded
form here). That approach also won't work for delta manifests. Calculating
the <b>R</b> card for delta manifests requires traversing both the delta and its baseline in
lexical order of the files, preferring the delta's copy if both contain
a given file.
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<title>Up and running in 5 minutes as a single user</title>

<p align="center"><b><i>
The following document was contributed by Gilles Ganault on 2013-01-08.
</i></b>
</p><hr>

<h1>Up and running in 5 minutes as a single user</h1>

This short document explains the main basic Fossil commands for a single
user, i.e. with no additional users, with no need to synchronize with some remote
repository, and no need for branching/forking.

<h2>Create a new repository</h2>

<tt>fossil new c:\test.repo</tt>

This will create the new SQLite binary file that holds the repository, i.e.
files, tickets, wiki, etc. It can be located anywhere, although it's considered
best practice to keep it outside the work directory where you will work on files
after they've been checked out of the repository.

<h2>Open the repository</h2>

<tt>cd c:\temp\test.fossil
<br>
fossil open c:\test.repo</tt>

This will check out the last revision of all the files in the repository,
if any, into the current work directory. In addition, it will create a binary
file _FOSSIL_ to keep track of changes (on non-Windows systems it is called
<tt>.fslckout</tt>).

<h2>Add new files</h2>

<tt>fossil add .</tt>

To tell Fossil to add new files to the repository. The files aren't actually
added until you run "<tt>fossil commit</tt>. When using ".", it tells Fossil
to add all the files in the current directory recursively, i.e. including all
the files in all the subdirectories.

Note: To tell Fossil to ignore some extensions:

<tt>fossil settings ignore-glob "*.o,*.obj,*.exe" --global</tt>

<h2>Remove files that haven't been committed yet</h2>

<tt>fossil delete myfile.c</tt>

This will simply remove the item from the list of files that were previously
added through "<tt>fossil add</tt>".

<h2>Check current status</h2>

<tt>fossil changes</tt>

This shows the list of changes that have been done and will be committed the
next time you run "<tt>fossil commit</tt>". It's a useful command to run before
running "<tt>fossil commit</tt>" just to check that things are OK before proceeding.

<h2>Commit changes</h2>

To actually apply the pending changes to the repository, e.g. new files marked
for addition, checked-out files that have been edited and must be checked-in,
etc.

<tt>fossil commit -m "Added stuff"</tt>

If no file names are provided on the command-line then all changes will be checked in,
otherwise just the listed file(s) will be checked in.

<h2>Compare two revisions of a file</h2>

If you wish to compare the last revision of a file and its checked out version
in your work directory:

<tt>fossil gdiff myfile.c</tt>

If you wish to compare two different revisions of a file in the repository:

<tt>fossil finfo myfile</tt>

Note the first hash, which is the hash of the commit
when the file was committed.

<tt>fossil gdiff --from HASH#1 --to HASH#2 myfile.c</tt>

<h2>Cancel changes and go back to previous revision</h2>

<tt>fossil revert myfile.c</tt>

Fossil does not prompt when reverting a file. It simply reminds the user about the
"undo" command, just in case the revert was a mistake.
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<title>Fossil Forums</title>

<h2>Introduction</h2>

Fossil includes a built-in discussion forum, designed to substitute
for a mailing list.  Email notification is available to receive posts,
but the web-based UI must be used to enter new posts.  Advantages of
the forum include:

  *  <b>Easy to Administer:</b> If you have already set up a
     [./server/|Fossil server] with [./alerts.md|email alerts]
     then turning on the forum feature
     is just a matter of flipping some permission bits.  There is
     no new software to install and configure, and the same logins
     and passwords work.

  *  <b>Consistent Display:</b>  Forum posts can be in [/md_rules|Markdown],
     [/wiki_rules|Fossil Wiki], or plain text.  Whichever format is used, the result is
     displayed consistently across all platforms and operating systems and
     between mobile devices and desktops.

  *  <b>Editable:</b>  Forum posts can be amended after they are sent,
     to fix typos or provide updates.  The original posts are preserved
     as part of the historical record, but only the amended posts are
     displayed by default.

  *  <b>Built-in Full-Text Search:</b> Forum posts can be included in
     the index used by the built-in Fossil search logic.

  *  <b>Off-Line Access:</b> Because forum posts are synced along with
     all other artifacts, you can search the forum, or add new posts, or
     edit existing posts, all while off-line.

  *  <b>Automatically Cross-Referenced To Other Fossil Artifacts:</b> Because forum
     posts are normal Fossil artifacts, you can link from them to
     other Fossil artifacts (check-ins, wiki, tickets) and from those other 
     artifacts to forum posts.  The reverse links are recognized and
     displayed automatically on the receiver.

  *  <b>Malefactor Resistant:</b> Because Fossil accepts forum posts
     only via the web UI, it is more resistent to spam.  Passers-by
     can post to the forum anonymously (subject to moderation), without
     the hassle of a sign-up process.

  *  <b>Distributed and Tamper-Proof:</b> Posts are stored in the Fossil
     repository using the same [./fileformat.wiki | DAG/Merkle-tree design]
     that Fossil uses to store your check-ins, wiki documents, etc.
     Forum posts sync to cloned repositories.

<h2>Example Installations</h2>

Both the [forum:/forum|Fossil project itself] and the
[https://sqlite.org/forum/forum|SQLite project] use the Fossil forum in place
of mailing lists.  The forum has worked well on both projects.  The ability
to post anonymously provides a low-resistance path for people to report
problems, resulting in more problems being reported and fixed.
The ability to moderate and amend forum posts means that the 
forums contain better information.  And backups and archives
are as easy as running "clone".

Both Fossil and SQLite keep their forums as separate repositories.
But there is no requirement to do this.  A forum can be coresident in
the same repository with the source code.

<h2 id="setup">Setting up a Fossil Forum</h2>

<h3 id="caps">Capabilities</h3>

By default, no Fossil user has permission to use the forums except for
users with Setup and Admin capabilities, which get these as part of the
large package of other capabilities they get.

For public Fossil repositories that wish to accept new users without
involving a human, go into Admin &rarr; Access and enable the "Allow
users to register themselves" setting. You may also wish to give users
in [./caps/#ucat | the <tt>anonymous</tt> user category] the
<b>[./caps/ref.html#2 | RdForum]</b> and
<b>[./caps/ref.html#3 | WrForum]</b>
capabilities: this allows people to post without creating an account
simply by solving [./antibot.wiki | a simple CAPTCHA].

For a private repository, you probably won't want to give the
<tt>anonymous</tt> user any forum access, but you may wish to give the
<b>RdForum</b> capability to users in the <tt>reader</tt> category.

For either type of repository, you are likely to want to give at least
the <b>[./caps/ref.html#4 | WrTForum]</b> capability to users in the <tt>developer</tt>
category. If you did not give the <b>RdForum</b> capability to
<tt>anonymous</tt> above, you should give <tt>developer</tt> that
capability here if you choose to give it <b>WrForum</b> or
<b>WrTForum</b> capability.

If you want to use the email alert feature, by default only those
users in the Setup and Admin user categories can make use of it. Grant
the <b>[./caps/ref.html#7 | EmailAlert]</b> capability to give others access to this feature.
Alternately, you can handle alert signups outside of Fossil, with
a Setup or Admin users manually signing users up via Admin &rarr;
Notification. You'll want to grant this capability to the
<tt>nobody</tt> user category if you want anyone to sign up without any
restrictions.  Give it to <tt>anonymous</tt> instead if you want the
user to solve a simple CAPTCHA before signing up. Or, give it to
<tt>reader</tt> or <tt>developer</tt> if you want only users with Fossil
logins to have this ability. (That's assuming you give one or both of
these capabilities to every user on your Fossil repository.)

By following this advice, you should not need to tediously add
capabilities to individual accounts except in atypical cases, such as
to grant the <b>[./caps/ref.html#5 | ModForum]</b> capability to an uncommonly
highly-trusted user.


<h3 id="skin">Skin Setup</h3>

If you create a new Fossil repository with version 2.7 or newer, its
default skin is already set up correctly for typical forum
configurations.

If you have an existing repository, you have two choices if you want its
skin to be upgraded to support forums:

<ol>
  <li>Go into Admin &rarr; Skins and switch from your current skin to
  one of the stock skins.  If you were on a stock skin, just switch away
  from your current one to the actual stock skin, since they will be
  different after the upgrade.</li>

  <li>If you have local customization that you do not want to throw
  away, you can use the diff feature of Fossil's skin editor to show how
  the skins differ.</li>
</ol>

The remainder of this section summarizes the differences you're expected
to see when taking option #2.

The first thing is that you'll need to add something like the following
to the Header part of the skin to create the navbar link:

<verbatim>
if {[anycap 23456] || [anoncap 2] || [anoncap 3]} {
  menulink /forum Forum
}
</verbatim>

These rules say that any logged-in user with any [./caps/ref.html#2 |
forum-related capability] or an anonymous user <b>RdForum</b> or
<b>WrForum</b> capability will see the "Forum" navbar
link, which just takes you to <tt>/forum</tt>.

The exact code you need here varies depending on which skin you're
using. Follow the style you see for the other navbar links.

The new forum feature also brings many new CSS styles to the table. If
you're using the stock skin or something sufficiently close, the changes
may work with your existing skin as-is. Otherwise, you might need to
adjust some things, such as the background color used for the selected
forum post:

<verbatim>
div.forumSel {
  background-color: rgba(0, 0, 0, 0.05);
}
</verbatim>

That overrides the default — a hard-coded light cyan — with a 95%
transparent black overlay instead, which simply darkens your skin's
normal background color underneath the selected post. That should work
with almost any background color except for very dark background colors.
For dark skins, an inverse of the above trick will work better:

<verbatim>
div.forumSel {
  background-color: rgba(255, 255, 255, 0.05);
}
</verbatim>

That overlays the background with 5% white to lighten it slightly.

Another new forum-related CSS style you might want to reflect into your
existing skin is:

<verbatim>
div.forumPosts a:visited {
  color: #6A7F94;
}
</verbatim>

This changes the clicked-hyperlink color for the forum post links on the
main <tt>/forum</tt> page only, which allows your browser's history
mechanism to show which threads a user has read and which not. The link
color will change back to the normal link color — indicating "unread" —
when a reply is added to an existing thread because that changes where
the link from the <tt>/forum</tt> page points, taking you to the newest
post in the thread.

The color given above is suitable for the stock skin.

Beware that when changing this example, there are some
[https://hacks.mozilla.org/2010/03/privacy-related-changes-coming-to-css-vistited/
| stringent restrictions] in modern browsers to prevent snoopy web sites
from brute-forcing your browsing history. (See the link for the method,
which explains the restrictions.)


<h3 id="search">Enable Forum Search</h3>

One of the underlying assumptions of the forum feature is that you will
want to be able to search the forum archives, so the <tt>/forum</tt>
page always includes a search box. Since that depends on search being
enabled on the Fossil repository, Fossil warns that search is disabled
until you go into Admin &rarr; Search and enable the "Search Forum"
setting.

You may want to enable some of the other Fossil search features while
you're in there. All of this does come at some CPU and I/O cost, which
is why it's disabled by default.


<h3 id="sso">Single Sign-On</h3>

If you choose to host your discussion forums within the same repository
as your project's other Fossil-managed content, you inherently have a
single sign-on system. Contrast third-party mailing list and forum
software where you either end up with two separate user tables and
permission sets, or you must go to significant effort to integrate the
two login systems.

You may instead choose to host your forums in a Fossil repository
separate from your project's main Fossil repository. A good reason to do
this is that you have a public project where very few of those
participating in the forum have special capability bits for project
assets managed by Fossil, so you wish to segregate the two user sets.

Yet, what of the users who will have logins on both repositories? Some
users will be trusted with access to the project's main Fossil
repository, and these users will probably also participate in the
project's Fossil-hosted forum. Fossil has a feature to solve this
problem: [./caps/login-groups.md | login groups].


<h3 id="alerts">Email Alerts (a.k.a. Notifications)</h3>

Internet email service has become rather complicated since its initial
simple and insecure implementation decades ago. Fossil's role in all of
this is rather small at the moment, but the details of the integration
are complex enough to justify [./alerts.md | a separate document].

(The other reason that document is separate is that Fossil's email
alerts system also gets used by features of Fossil other than the
forum.)


<h2 id="access">Accessing the Forum</h2>

There are many paths to a repository's Fossil forum:

<ul>
  <li>
    If you're using the default Fossil skin as shipped with Fossil
    2.7+ or one [#skin | updated] to support it, there
    is a Forum button in the navbar which appears for users able to
    access the forum. With the default skin, that button will only
    appear if the user's browser window is at least
    1200 pixels wide.  The
    Fossil admin can adjust this limit in the skin's CSS section, down
    near the bottom in the definition of the `wideonly` style.
  </li>

  <li>The other stock skins have this button in them as of 2.7 as well,
  without the screen width restriction, since the navbar in those skins
  wraps on narrow screens more gracefully than the default skin
  does.</li>

  <li>Users who set up their Fossil repository under prior versions and
  who now have local skin changes they don't want to overwrite by
  reverting to the stock 2.7 version of the skin they chose to start
  with can easily [#skin | edit their skin] to include these links.</li>

  <li>A "Forum" link appears in the drop-down panel when you click the
  default skin's hamburger menu (&#9776;) while logged in as any user
  with one or more of the [#caps | user capabilities listed above].</li>

  <li>That same link also appears on the repository's <tt>/sitemap</tt>
  page, since it provides the content for the hamburger menu's
  panel.</li>
</ul>


<h2 id="moderation">How Moderation Works</h2>

In this section, we're going to call all of the following a "forum
update:"

  *  create a new post
  *  reply to an existing post
  *  edit a post or reply

When a person with the normal <b>WrForum</b> capability
updates the forum, Fossil saves the update in its block chain, but this
update is impermanent because of two other table updates made at the
same time:

<ol>
    <li>Fossil saves the update artifact's ID in its <tt>private</tt>
    table, preventing Fossil from sending such artifacts to any of the
    repository's clones.  (This is the same mechanism behind
    [./private.wiki | private branches].)</li>

    <li>Fossil also adds a reference to that artifact in the
    <tt>modreq</tt> table, which backs the moderation feature.  This is
    what causes Fossil to leave out the Reply button when rendering that
    post's HTML in the forum's web interface.</li>
</ol>

When a moderator approves an update, Fossil deletes these table entries,
making the update [./shunning.wiki | semi-permanent]. This changes how Fossil renders the
HTML for that update. It also means the artifact will now sync to
users with <b>[./caps/ref.html#g | Clone]</b> capability.

When a forum user edits a moderator-approved artifact, what actually
happens under the hood is that Fossil writes another artifact to the
repository which refers to the original version as its parent, causing
Fossil UI to present the new version instead of the original. The
original version remains in the repository, just as with historical
checkins. The parent must remain in the repository for referential
integrity purposes.

When you "Delete" a moderator-approved post or reply through Fossil UI,
it's actually an edit with blank replacement content. The only way to
truly delete such artifacts is through [./shunning.wiki | shunning].

When a user with <b>WrTForum</b> capability
updates the forum, it happens in the same way except that Fossil skips
the <tt>private</tt> and <tt>modreq</tt> table insertions.

When a moderator rejects an update, that artifact is unceremoniously
removed from the tip of the block chain. This is safe because Fossil
prevents replies to a reply or post awaiting moderator approval, so
referential integrity cannot be harmed.  Rejecting an edit is even
safer, since the original post remains behind, so that replies continue
to refer to that original post.


<h2 id="mod-user">Using the Moderation Feature</h2>

Having described all of the work that Fossil performs under the hood on
behalf of its users, we can now give the short list of work left for the
repository's administrators and moderators:

<ol>
    <li>Add the <b>[./caps/ref.html#5 | ModForum]</b> capability to any of
    your users who should have this ability. You don't need to do this
    for any user with <b>[./caps/ref.html#s | Setup]</b> or
    <b>[./caps/ref.html#a | Admin]</b> capability; it's
    [/artifact/b16221ffb736caa2?ln=1246-1257 | already included].</li>

    <li>When someone updates the forum, an entry will appear in the
    timeline if the type filter is set to "Forum" or "Any Type". If that
    user has only the <b>WrForum</b> capability, any
    other user with the <b>ModForum</b> capability
    will see a conditional link appear at the top of the main forum
    page: "Moderation Requests".  Clicking this takes the moderator to
    the <tt>/modreq</tt> page. A moderator may wish to keep the main
    forum page open in a browser tab, reloading it occasionally to see
    when the "Moderation Requests" link reappears.</li>

    <li>A moderator viewing an update pending moderation sees two
    buttons at the bottom, "Approve" and "Reject" in place of the
    "Delete" button that the post's creator sees. Beware that both
    actions are durable and have no undo. Be careful!</li>
</ol>

<h2 id="close-post">Closing Forum Posts</h2>

As of version 2.23, the forum interface supports the notion of
"closing" posts. By default, only users with the [./caps/index.md|'s'
and 'a' capabilities] may close or re-open posts, or reply to closed
posts. If the [/help?cmd=forum-close-policy|forum-close-policy
configuration option] is enabled then users with
[./caps/index.md|forum-moderator permissions] may also perform those
actions.

Closing a post has the following implications:

  *  Only authorized users may edit or respond to such posts, recursively
     through all responses of that post.
  *  Only authorized users may re-open a closed post.

A forum thread may be closed at any given point in the conversation,
not just the starting point of the thread, and affects that specific
post and all existing responses to it.

Note that closing a post is effectively an "advisory lock" and may be
bypassed. Any user, admin or otherwise, who can push changes to a
repository may bypass closure of a post by setting the appropriate
artifact tags on a local copy and pushing those changes to a remote
copy of the forum.

The option to close a post, permissions permitting, appears as a
"Close" button on the currently-selected post. If the selected post is
alread closed, a "Re-open" button will be shown instead. In order to
re-open a post, <em>the closed post itself</em> must be
selected. Selecting a response to that post, which is implicitly
closed by the closure of its parent, will <em>not</em> offer a re-open
option.

Though forum users are permitted to delete their own posts, they are
not permitted, without appropriate permissions, to close their own
posts. This is intentional, as closing one's own post can be used to
antagonize other forum users. For example, by posting something
trollish or highly controversial in nature and closing the post to
further responses.
Added www/foss-cklist.wiki.
















































































































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<title>Checklist For Successful Open-Source Projects</title>
<nowiki>

This checklist is loosely derived from Tom "Spot" Callaway's Fail Score
blog post <a href="http://spot.livejournal.com/308370.html">
http://spot.livejournal.com/308370.html</a> (see also
<a href="http://www.theopensourceway.org/book/The_Open_Source_Way-How_to_tell_if_a_FLOSS_project_is_doomed_to_FAIL.html">[1]</a>).
Tom's original post assigned point scores to the various elements and
by adding together the individual points, the reader is supposed to be able
to judge the likelihood that the project will fail.
The point scores, and the items on the list, clearly reflect Tom's
biases and are not necessarily those of the larger open-source community.
Nevertheless, the policy of the Fossil shall be to strive for a perfect
score.

This checklist is an inversion of Tom's original post in that it strives to
say what the project should do in order to succeed rather than what it
should not do to avoid failure.  The point values are omitted.

See also:
<ul>
<li><a href="http://offog.org/articles/packaging/">
http://offog.org/articles/packaging/</a>
<li>
<a href="http://www.gnu.org/prep/standards/standards.html#Managing-Releases">
http://www.gnu.org/prep/standards/standards.html#Managing-Releases</a>
</ul>

<hr>

<ol>
<li>The source code size is less than 100 MB, uncompressed.

<li>The project uses a Version Control System (VCS).
<ol type="a">
<li>The VCS has a working web interface.
<li>There is documentation on how to use the VCS.
<li>The VCS is general-purpose, not something hacked together for this
    one project.
</ol>

<li>The project comes with documentation on how to build from source
and that documentation is lucid, correct, and up-to-date.

<li>The project is configurable using an autoconf-generated configure
script, or the equivalent, and does not require:
<ol type="a">
<li>Manually editing flat files
<li>Editing code header files
</ol>

<li>The project should be buildable using commonly available and
       standard tools like "make".

<li>The project does not depend on 3rd-party proprietary build tools.

<li>The project is able to dynamically link against standard libraries
      such as zlib and libjpeg.
<ol type="a">
<li>The project does not ship with the sources to standard libraries.
    <i>(On the Fossil project, we will allow the SQLite library sources
    to be included in the source tree as long as a system-installed
    SQLite library can be used in its stead.)</i>
<li>The project does not use slightly modified versions of standard
    libraries.  Any required bug fixes in standard libraries are pushed
    back upstream.
</ol>


<li>"make install" works and can be configured to target any
       directory of the installer's choosing.
<ol type="a">
<li>The project contains no unconfigurable hard-coded pathnames like
    "/opt" or "/usr/local".
<li>After installation, the source tree can be moved or deleted and
    the application will continue working.
</ol>


<li>The source code uses only \n for line endings, not \r\n.

<li>The code does not depend on any special compiler features or bugs.

<li>The project has a mailing list and announces releases on
       the mailing list.

<li>The project has a bug tracker.

<li>The project has a website.

<li>Release version numbers are in the traditional X.Y or X.Y.Z format.

<li>Releases can be downloaded as tarball using
       gzip or bzip2 compression.

<li>Releases unpack into a versioned top-level directory.
       (ex:  "projectname-1.2.3/").

<li>A statement of license appears at the top of every source code file
       and the complete text of the license is included in the source code
       tarball.

<li>There are no incompatible licenses in the code.

<li>The project has not been blithely proclaimed "public domain" without
having gone through the tedious and exacting legal steps to actually put it
in the public domain.

<li>There is an accurate change log in the code and on the website.

<li>There is documentation in the code and on the website.
</ol>
Added www/fossil-from-msvc.wiki.



















































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<h1>Integrating Fossil in the Microsoft Express 2010 IDE</h1>

<i>Contributed by Gilles Ganault on 2013-05-24.</i>

The Express version of Visual Studio doesn't support add-in's and plug-in's,
but it's not an issue since it's still possible to use Fossil through the
External Tools menu and Fossil is a CLI application anyway:

<ol type="1">
    <li>Tools &gt; Settings &gt; Expert Settings</li>
    <li>Tools &gt; External Tools, where the items in this list map
        to "External Tool X" that we'll add to our own Fossil
        menu later: </li>
    <ol type="1">
        <li>Rename the default "&#91;New Tool 1&#93;" to eg.
        "Commit"&nbsp;&nbsp;&nbsp;2.
        </li>
        <li>Change Command to where Fossil is located eg.
            "c:\fossil.exe"</li>
        <li>Change Arguments to the required command, eg.
            "commit -m".
        The user will be prompted to type the comment that Commit expects</li>
        <li>Set "Initial Directory" to point it to the work directory
        where the source files are currently checked out
        by Fossil (eg. c:\Workspace). It's also possible to use system
        variables such as "$(ProjectDir)" instead of hard-coding the path</li>
        <li>Check "Prompt for arguments", since Commit
        requires typing a comment. Useless for commands like Changes
        that don't require arguments</li>
        <li>Uncheck "Close on Exit", so we can see what Fossil says
        before closing the DOS box. Note that "Use Output Window"
        will display the output in a child window within the IDE instead of
        opening a DOS box</li>
        <li>Click on OK</li>
    </ol>
    <li>Tools &gt; Customize &gt; Commands</li>
    <ol type="1">
        <li>With "Menu bar = Menu Bar" selected, click on "Add
        New Menu". A new "Fossil" menu is displayed in the
        IDE's menu bar</li>
        <li>Click on "Modify Selection" to rename it
        "Fossil", and...</li>
        <li>Use the "Move Down" button to move it lower in
        the list</li>
    </ol>
    <li>Still in Customize dialog: In the "Menu bar" combo, select
    the new Fossil menu you just created, and Click on "Add Command...":
    From Categories, select Tools, and select "External Command 1".
    Click on Close. It's unfortunate that the IDE doesn't say which command
    maps to "External Command X".</li>
</ol>
Added www/fossil-is-not-relational.md.






















































































































































































































































































































































































































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# Fossil is not Relational

***An Introduction to the Fossil Data Model***

Upon hearing that Fossil is based on sqlite, it's natural for people
unfamiliar with its internals to assume that Fossil stores its
SCM-relevant data in a database-friendly way and that the SCM history
can be modified via SQL. The truth, however, is *far stranger than
that.*

This document introduces, at a relatively high level:

1) The underlying enduring and immutable data format, which is
  independent of any specific storage engine.

2) The `blob` table: Fossil's single point of SCM-relevant data
  storage.

3) The transformation of (1) from its immutable raw form to a
  *transient* database-friendly form.

4) Some of the consequences of this model.


# Part 1: Artifacts

```pikchr center
AllObjects: [
A: file "Artifacts" fill lightskyblue;
down; move to A.s; move 50%;
F: file "Client" "files";
right; move 1; up; move 50%;
B: cylinder "blob table"
right;
arrow from A.e to B.w;
arrow from F.e to B.w;
arrow dashed from B.e;
C: box rad 0.1 "Crosslink" "process";
arrow
AUX: cylinder "Auxiliary" "tables"
arc -> cw dotted from AUX.s to B.s;
] # end of AllObjects
```


The centerpiece of Fossil's architecture is a data format which
describes what we call "artifacts." Each artifact represents the state
of one atomic unit of SCM-relevant data, such as a single checkin, a
single wiki page edit, a single modification to a ticket, creation or
cancellation of tags, and similar SCM constructs. In the cases of
checkins and ticket updates, an artifact may record changes to
multiple files resp. ticket fields, but the change as a whole
is atomic. Though we often refer to both fossil-specific SCM data
and client-side content as artifacts, this document uses the term
artifact solely for the former purpose.

From [the data format's main documentation][dataformat]:

> The global state of a fossil repository is kept simple so that it
> can endure in useful form for decades or centuries. A fossil
> repository is intended to be readable, searchable, and extensible by
> people not yet born.

[dataformat]: ./fileformat.wiki

This format has the following major properties:

- It is <u>**syntactically simple**</u>, easily and efficiently
  parsable in any programming language. It is also entirely
  human-readable.

- It is <u>**immutable**</u>. An artifact is identified by its unique
  hash value. Any modification to an artifact changes that hash,
  thereby changing its identity.

- It is <u>**not generic**</u>. It is custom-made for its purpose and
  makes no attempt at providing a generic format. It contains *only*
  what it *needs* to function, with zero bloat.

- It <u>**holds all SCM-relevant data except for client-level file
  content**</u>, the latter instead being referenced by their unique
  hash values. Storage of the client-side content is an implementation
  detail delegated to higher-level applications.
 
- <u>**Auditability**</u>. By following the hash references in
  artifacts it is possible to unambiguously trace the origin of any
  modification to the SCM state. Combined with higher-level tools
  (specifically, Fossil's database), this audit trail can easily be
  traced both backwards and forwards in time, using any given version
  in the SCM history as a starting point.

Notably, the artifact file format <u>does not</u>...

- Specify any specific storage mechanism for the SCM's raw bytes,
  which includes both artifacts themselves and client-side file
  content. The file format refers to all such content solely by its
  unique hash value.

- Specify any optimimizations such as storing file-level changes as
  deltas between two versions of that content.

Such aspects are all considered to be implementation details of
higher-level applications (be they in the main fossil binary or a
hypothetical 3rd-party application), and have no effect on the
underlying artifact data model. That said, in Fossil:

- All raw byte content (artifacts and client files) is stored in
  the `blob` database table.

- Fossil uses delta and zlib compression to keep the storage size of
  changes from one version of a piece of content to the next to a
  minimum.


## Sidebar: SCM-relevant vs Non-SCM-relevant State

Certain data in Fossil are "SCM-relevant" and certain data are not. In
short, SCM-relevant data are managed in a way consistent with
controlled versioning of that data. Conversely, non-SCM-relevant data
are essentially any state neither specified by nor unambiguously
refererenced by the artifact file format and are therefore not
versioned.

SCM-relevant state includes:

- Any and all data stored in the bodies of artifacts. This includes,
  but is not limited to: wiki/ticket/forum content, tags, file names
  and Fossil-side permissions, the name of each user who introduces
  any given artifact into the data store, the timestamp of each such
  change, the inheritance tree of checkins, and many other pieces of
  metadata.

- Raw file content of versioned files. These data are external to
  artifacts, which refer to them by their hashes. How they are stored
  is not the concern of the data model, but (spoiler alert!) Fossil
  stores them in an SQLite database, one record per distinct hash, in
  its `blob` table (which we will cover more very soon).

Non-SCM-relevant state includes:

- Fossil's list of users and their metadata (permissions, email
  address, etc.). Artifacts themselves reference users only by their
  user names. Artifacts neither care whether, nor guarantee that, user
  "drh" in one artifact is in fact the same "drh" referenced in
  another artifact.

- All Fossil UI configuration, e.g. the site's skin, config settings,
  and project name.

- In short, any tables in a Fossil repository file except for the
  `blob` table. Most, but not all, of these tables are transient
  caches for the data specified by the artifact files (which are
  stored in the `blob` table), and can safely be destroyed and rebuilt
  from the collection of artifacts with no loss of state to the
  repository. *All* of them, except for `blob` and `delta`, can be
  destroyed with no loss of *SCM-relevant* data.

## Terminology Hair-splitting: Manifest vs. Artifact

We sometimes refer to artifacts as "manifests," which is technically a
term for artifacts which record checkins. The various other artifact
types are arguably not "manifests," but are sometimes referred to as
such because the internal APIs use that term.


## A Very Basic Example

The following artifact, truncated for brevity, represents a typical
checkin artifact (a.k.a. a manifest):

```
C Bug\sfix\sin\sthe\slocal\sdatabase\sfinder.
D 2007-07-30T13:01:08
F src/VERSION 24bbb3aad63325ff33c56d777007d7cd63dc19ea
F src/add.c 1a5dfcdbfd24c65fa04da865b2e21486d075e154
F src/blob.c 8ec1e279a6cd0cfd5f1e3f8a39f2e9a1682e0113
<SNIP>
F www/selfcheck.html 849df9860df602dc2c55163d658c6b138213122f
P 01e7596a984e2cd2bc12abc0a741415b902cbeea
R 74a0432d81b956bfc3ff5a1a2bb46eb5
U drh
Z c9dcc06ecead312b1c310711cb360bc3
```

Each line is a single data record called a "card." The first letter of
each line tells us the type of data stored on that line and the
following space-separated tokens contain the data for that
line. Tokens which themselves contain spaces (notably the checkin
comment) have those escaped as `\s`. The raw text of wiki
pages/comments, forum posts, and ticket bodies/comments is stored
directly in the corresponding artifact, but is stored in a way which
makes such escaping unnecessary.

The hashes seen above are a critical component of the architecture:

- The `F` (file) records refer to the content of those files by the
hash of that content. Where that content is stored is *not* specified
by the data model.

- The `P` (parent) line is the hash code of the parent version (itself
  an artifact).

- The `Z` line is a hash of all of the content of *this artifact*
  which precedes the `Z` line. Thus any change to the content of an
  artifact changes both the artifact's identity (its hash) and its `Z`
  value, making it impossible to inject modified artifacts into an
  existing artifact tree.

- The `R` line is yet another consistency-checking hash which we won't
  go into here except to say that it's an internal consistency
  check/line of defense against modification of file content
  referenced by the artifact.

# Part 2: The `blob` Table

```pikchr center
AllObjects: [
A: file "Artifacts";
down; move to A.s; move 50%;
F: file "Client" "files" fill lightskyblue;
right; move 1; up; move 50%;
B: cylinder "blob table" fill lightskyblue;
right;
arrow from A.e to B.w;
arrow from F.e to B.w;
arrow dashed from B.e;
C: box rad 0.1 "Crosslink" "process";
arrow
AUX: cylinder "Auxiliary" "tables"
arc -> cw dotted from AUX.s to B.s;
] # end of AllObjects
```


The `blob` table is the core-most storage of a Fossil repository
database, storing all SCM-relevant data (and *only* SCM-relevant
data). Each row of this table holds a single artifact or the content
for a single version of a single client-side file. Slightly truncated
for clarity, its schema contains the following fields:

- **`uuid`**: the hash code of the blob's contents.
- **`rid`**: a unique integer key for this record. This is how the
  blob table is mapped to other (transient) tables, but the RIDs are
  specific to one given copy of a repository and must not be used for
  cross-repository referencing. The RID is a private/internal value of
  no use to a user unless they're building SQL queries for use with
  the Fossil db schema.
- **`size`**: the size, in bytes, of the blob's contents, or -1 for
  "phantom" blobs (those which Fossil knows should exist because it's
  seen them referenced somewhere, but for which it has not been given
  any content).
- **`content`**: the blob's raw content bytes, with the caveat that
  Fossil is free to store it in an "alternate representation."
  Specifically, the `content` field often holds a zlib-compressed
  delta from a previous version of the blob's content (a separate
  entry in the `blob` table), and an auxiliary table named `delta`
  maps such blobs to their previous versions, such that Fossil can
  reconstruct the real content from them by applying the delta to its
  previous version (and such deltas may be chained). Thus extraction
  of the content from this field cannot be performed via vanilla SQL,
  and requires a Fossil-specific function which knows how to convert
  any internal representations of the content to its original form.


## Sidebar: How does `blob` Distinguish Between Artifacts and Client Content?

Notice that the `blob` table has no flag saying "this record is an
artifact" or "this record is client data." Similarly, there is no
place in the database dedicated to keeping track of which `blob`
records are artifacts and which are file content.

That said, (A) the type of a blob can be implied via certain table
relationships and (B) the `event` table (the `/timeline`'s main data
source) incidentally has a list of artifacts and their sub-types
(checkin, wiki, tag, etc.). However, given that all of those
relationships, including the timeline, are *transient*, how can Fossil
distinguish between the two types of data?

Fossil's artifact format is extremely rigid and is *strictly* enforced
internally, with zero room provided for leniency. Every artifact which
is internally created is re-parsed for validity before it is committed
to the database, making it impossible that Fossil can inject an
invalid artifact into the repository. Because of the strictness of the
artifact parser, the chances that any given piece of arbitrary client
data could be successfully parsed as an artifact, even if it is
syntactically 99% similar to an artifact, are *effectively zero*.

Thus Fossil's rule of interpreting the contents of the blob table is:
if it can be parsed as an artifact, it *is* an artifact, else it is
opaque client-side data.

That rule is most often relevant in operations like `rebuild` and
`reconstruct`, both of which necessarily have to sort out artifacts
and non-artifact blobs from arbitrary collections of blobs.

It is, in fact, possible to store an artifact unrelated to the current
repository in that repository, and it *will be parsed and processed as
an artifact* (see below), but it likely refers to other artifacts or
blobs which are not part of the current repository, thereby possibly
introducing "strange" data into the UI. If this happens, it's
potentially slightly confusing but is functionally harmless.


# Part 3: Crosslinking

```pikchr center
AllObjects: [
A: file "Artifacts";
down; move to A.s; move 50%;
F: file "Client" "files";
right; move 1; up; move 50%;
B: cylinder "blob table"
right;
arrow from A.e to B.w;
arrow from F.e to B.w;
arrow dashed from B.e;
C: box rad 0.1 "Crosslink" "process" fill lightskyblue;
arrow
AUX: cylinder "Auxiliary" "tables" fill lightskyblue;
arc -> cw dotted from AUX.s to B.s;
] # end of AllObjects
```

Once an artifact is stored in the `blob` table, how does one perform
SQL queries against its plain-text format? In short: *One Does Not
Simply Query the Artifacts*.

Crosslinking, as its colloquially known, is a one-way processing step
which transforms an immutable artifact's state into something
database-friendly. Crosslinking happens automatically every time
Fossil generates, or is given, a new artifact. Crosslinking of any
given artifact may update many different auxiliary tables, *all* of
which are transient in the sense that they may be destroyed and then
recreated by crosslinking all artifacts from the `blob` table (which
is exactly what the `rebuild` command does). The overwhelming majority
of individual database records in any Fossil repository are found in
these transient auxiliary tables, though the `blob` table tends to
account for the overwhelming majority of a repository's disk space.

This approach to mapping data from artifacts to the db gives Fossil
the freedom to change its database model, effectively at will, with
minimal client-side disruption (at most, a call to `rebuild`). This
allows, for example, Fossil to take advantage of new improvements in
sqlite without affecting compatibility with older repositories.

Auxiliary tables hold data mappings such as:

- Child/parent relationships of checkins. (The `plink` table.)
- Records of file names and changes to files. (The `mlink` and `filename` tables.)
- Timeline entries. (The `event` table.)

And numerous other bits and pieces.

The many auxiliary tables maintained by the app-level code reference
the `blob` table via its RID field, as that's far more efficient than
using hashes (`blob.uuid`) as foreign keys. The contexts of those
auxiliary data unambiguously tell us whether the referenced blobs are
artifacts or file content, so there is no efficiency penalty there for
hosting both opaque blobs and artifacts in the `blob` table.

The complete SQL schemas for the core-most auxiliary tables can be found
at:

[](/finfo/src/schema.c?ci=trunk)

Noting, however, that all database tables are effectively internal
APIs, with no API stability guarantees and subject to change at any
time. Thus their structures generally should not be relied upon in
client-side scripts.


# Part 4: Implications and Consequences of the Model

*Some* of the implications and consequences of Fossil's data model
combined with the higher-level access via SQL include:

- **Provable immutability of history.** Fossil offers only one option
  for modifying history: "shunning" is the forceful removal of an
  artifact from the `blob` table and the creation of a db record
  stating that the shunned hash may no longer be synced into this
  repository. Shunning effectively leaves a hole in the SCM history,
  and is only intended to be used for removal of illegal, dangerous,
  or private information which should never have been added to the
  repository.

- **Complete separation of SCM-relevant data and app-level data
  structures**. This allows the application to update its structures
  at will without significant backwards-compatibility concerns. In
  Fossil's case, "data structures" primarily refers to the SQL
  schema. Bringing a given repository schema up to date vis a vis a
  given fossil binary version simply means rebuilding the repository
  with that fossil binary. There are exceptionally rare cases, namely
  the switch from SHA1 to SHA3-256 ushered in with Fossil 2.0, which
  can lead to true incompatibility. e.g. a Fossil 1.x client cannot
  use a repository database which contains SHA3 hashes, regardless of
  a rebuild.

- **Two-way compatibility with other hypothetical clients** which also
  implement the same underlying data model. So far there are none, but
  it's conceivably possible.

- **Provides a solid basis for reporting.** Fossil's real-time metrics
  and reporting options are arguably the most powerful and flexible
  yet seen in an SCM.

- Very probably several more things.
Added www/fossil-v-git.wiki.

































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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<title>Fossil Versus Git</title>

<h2>1.0 Don't Stress!</h2>

The feature sets of Fossil and [http://git-scm.com | Git] overlap in
many ways. Both are
[https://en.wikipedia.org/wiki/Distributed_version_control | distributed
version control systems] which store a tree of check-in objects to a
local repository clone. In both systems, the local clone starts out as a
full copy of the remote parent. New content gets added to the local
clone and then later optionally pushed up to the remote, and changes to
the remote can be pulled down to the local clone at will. Both systems
offer diffing, patching, branching, merging, cherry-picking, bisecting,
private branches, a stash, etc.

Fossil has inbound and outbound Git conversion features, so if you start
out using one DVCS and later decide you like the other better, you can
easily [./inout.wiki | move your version-controlled file content].¹

In this document, we set all of that similarity and interoperability
aside and focus on the important differences between the two, especially
those that impact the user experience.

Keep in mind that you are reading this on a Fossil website, and though
we try to be fair, the information here
might be biased in favor of Fossil, if only because we spend most of our
time using Fossil, not Git.  Ask around for second opinions from
people who have used <em>both</em> Fossil and Git.

If you want a more practical, less philosophical guide to moving from
Git to Fossil, see our [./gitusers.md | Git to Fossil Translation Guide].


<h2>2.0 Differences Between Fossil And Git</h2>

Differences between Fossil and Git are summarized by the following table,
with further description in the text that follows.

<table style="width: fit-content">
<tr><th>GIT</th><th>FOSSIL</th><th>more</th></tr>
<tr>
    <td>File versioning only</td>
    <td>
      VCS, tickets, wiki, docs, notes, forum, chat, UI,
      [https://en.wikipedia.org/wiki/Role-based_access_control|RBAC]
    </td>
    <td><a href="#features">2.1&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>A federation of many small programs</td>
    <td>One self-contained, stand-alone executable</td>
    <td><a href="#selfcontained">2.2&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Custom key/value data store</td>
    <td>[https://sqlite.org/mostdeployed.html|The most used SQL database in the world]</td>
    <td><a href="#durable">2.3&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Runs natively on POSIX systems</td>
    <td>Runs natively on both POSIX and Windows</td>
    <td><a href="#portable">2.4&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Bazaar-style development</td>
    <td>Cathedral-style development</td>
    <td><a href="#devorg">2.5.1&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Designed for Linux kernel development</td>
    <td>Designed for SQLite development</td>
    <td><a href="#scale">2.5.2&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Focus on individual branches</td>
    <td>Focus on the entire tree of changes</td>
    <td><a href="#branches">2.5.3&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>One check-out per repository</td>
    <td>Many check-outs per repository</td>
    <td><a href="#checkouts">2.6&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Remembers what you should have done</td>
    <td>Remembers what you actually did</td>
    <td><a href="#history">2.7&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>Commit first</td>
    <td>Test first</td>
    <td><a href="#testing">2.8&nbsp;&darr;</a></td>
</tr>
<tr>
    <td>SHA-1 or SHA-2</td>
    <td>SHA-1 and/or SHA-3, in the same repository</td>
    <td><a href="#hash">2.9&nbsp;&darr;</a></td>
</tr>
</table>

<h3 id="features">2.1 Featureful</h3>

Git provides file versioning services only, whereas Fossil adds
an integrated [./wikitheory.wiki | wiki],
[./bugtheory.wiki | ticketing &amp; bug tracking],
[./embeddeddoc.wiki | embedded documentation], 
[./event.wiki | technical notes], a [./forum.wiki | web forum],
and a [./chat.md | chat service],
all within a single nicely-designed [./customskin.md|skinnable] web
[/help?cmd=ui|UI],
protected by [./caps/ | a fine-grained role-based
access control system].
These additional capabilities are available for Git as 3rd-party
add-ons, but with Fossil they are integrated into
the design, to the point that it approximates
"[https://github.com/ | GitHub]-in-a-box."

Even if you only want straight version control, Fossil has affordances
not available in Git.

For instance, Fossil can do operations over all local repo clones and
check-out directories with a single command. You can say "<tt>fossil
all sync</tt>" on a laptop prior to taking it off the network hosting
those repos, as before going on a trip.  It doesn't matter if those
repos are private and restricted to your company network or public
Internet-hosted repos, you get synced up with everything you need while
off-network.

You get the same capability with several other Fossil
sub-commands as well, such as "<tt>fossil all changes</tt>" to get a list of files
that you forgot to commit prior to the end of your working day, across
all repos.

Whenever Fossil is told to modify the local checkout in some destructive
way ([/help?cmd=rm|fossil rm], [/help?cmd=update|fossil update],
[/help?cmd=revert|fossil revert], etc.) Fossil remembers the prior state
and is able to return the check-out directory to that state with a
<tt>fossil undo</tt> command. While you cannot undo a commit in Fossil
— [#history | on purpose!] — as long as the change remains confined to
the local check-out directory only, Fossil makes undo
[https://git-scm.com/book/en/v2/Git-Basics-Undoing-Things|easier than in
Git].

For developers who choose to self-host projects rather than rely on a
3rd-party service such as GitHub, Fossil is much easier to set up:
the stand-alone Fossil executable together with a [./server/any/cgi.md|2-line CGI script]
suffice to instantiate a full-featured developer website.  To accomplish
the same using Git requires locating, installing, configuring, integrating,
and managing a wide assortment of separate tools.  Standing up a developer
website using Fossil can be done in minutes, whereas doing the same using
Git requires hours or days.

Fossil is small, complete, and self-contained.  If you clone
[https://github.com/git/git|Git's self-hosting repository], you get just
Git's source code.  If you clone Fossil's self-hosting repository, you
get the entire Fossil website — source code, documentation, ticket
history, and so forth.² That means you get a copy of this very article
and all of its historical versions, plus the same for all of the other
public content on this site.


<h3 id="selfcontained" name="selfcontained">2.2 Self Contained</h3>

Git is actually a collection of many small tools, each doing one small
part of the job, which can be recombined (by experts) to perform
powerful operations. Git has a lot of complexity and many dependencies,
so that most people end up installing it via some kind of package
manager, simply because the creation of complicated binary packages is
best delegated to people skilled in their creation. Normal Git users are
not expected to build Git from source and install it themselves.

Fossil is a single self-contained stand-alone executable which
depends only on common platform libraries in its default configuration.
To install one of [https://fossil-scm.org/home/uv/download.html | our
precompiled binaries], unpack the executable from the archive and put it
somewhere in your <tt>PATH</tt>. To uninstall it, delete the executable.

This policy is particularly useful when running Fossil inside a
restrictive container, anything from [./chroot.md | classic chroot
jails] to modern [https://en.wikipedia.org/wiki/OS-level_virtualization
| OS-level virtualization mechanisms] such as
[https://en.wikipedia.org/wiki/Docker_(software) | Docker].
Our [./containers.md | stock container image] is under 8&nbsp;MB when
uncompressed and running. It contains nothing but a single
statically-linked binary.

If you build a dynamically linked binary instead, Fossil's on-disk size
drops to around 6&nbsp;MB, and it's dependent only on widespread
platform libraries with stable ABIs such as glibc, zlib, and openssl.

Full static linking is easier on Windows, so our precompiled Windows
binaries are just a ZIP archive
containing only "<tt>fossil.exe</tt>".  There is no "<tt>setup.exe</tt>"
to run.

Fossil is easy to build from sources. Just run
"<tt>./configure && make</tt>" on POSIX systems and
"<tt>nmake /f Makefile.msc</tt>" on Windows.

Contrast a basic installation of Git, which takes up about
15&nbsp;MiB on Debian 10 across 230 files, not counting the contents of
<tt>/usr/share/doc</tt> or <tt>/usr/share/locale</tt>. If you need to
deploy to any platform where you cannot count on facilities like the POSIX
shell, Perl interpreter, and Tcl/Tk platform needed to fully use Git
as part of the base platform, the full footprint of a Git installation
extends to more like 45&nbsp;MiB and thousands of files. This complicates
several common scenarios: Git for Windows, chrooted Git servers,
Docker images...

Some say that Git more closely adheres to the Unix philosophy,
summarized as "many small tools, loosely joined," but we have many
examples of other successful Unix software that violates that principle
to good effect, from Apache to Python to ZFS. We can infer from that
that this is not an absolute principle of good software design.
Sometimes "many features, tightly-coupled" works better. What actually
matters is effectiveness and efficiency. We believe Fossil achieves
this.

The above size comparisons aren't apples-to-apples anyway. We've
compared the size of Fossil with all of its [#features | many built-in
features] to a fairly minimal Git installation. You must add a lot of
third-party software to Git to give it a Fossil-equivalent feature set.
Consider [https://about.gitlab.com/|GitLab], a third-party extension to
Git wrapping it in many features, making it roughly Fossil-equivalent,
though [https://docs.gitlab.com/ee/install/requirements.html|much more
resource hungry] and hence more costly to run than the equivalent Fossil
setup. [https://hub.docker.com/r/gitlab/gitlab-ce/ | The official GitLab
Community Edition container] currently clocks in at 2.66 GiB!

GitLab's requirements are easy to accept when you're dedicating
a local rack server or blade to it, since its minimum requirements are
more or less a description of the smallest
thing you could call a "server" these days, but when you go to host that
in the cloud, you can expect to pay about 8 times as much to comfortably host
GitLab as for Fossil.³ This difference is largely due to basic
technology choices: Ruby and PostgreSQL vs C and SQLite.

The Fossil project itself is [./selfhost.wiki|hosted on a small and
inexpensive VPS].  A bare-bones $5/month VPS or a
spare Raspberry Pi is sufficient to run a full-up project
site, complete with tickets, wiki, chat, and forum, in addition to
being a code repository.

<h3 id="durable" name="database">2.3 Query Language</h3>

The baseline data structures for Fossil and Git are the same, modulo
formatting details. Both systems manage a
[https://en.wikipedia.org/wiki/Directed_acyclic_graph | directed acyclic
graph] (DAG) of [https://en.wikipedia.org/wiki/Merkle_tree | Merkle
tree] structured check-in objects.
Check-ins are identified by a cryptographic hash of the check-in
contents, and each check-in refers to its parent via the parent's hash.

The difference is that Git stores its objects as individual files in the
<tt>.git</tt> folder or compressed into bespoke key/value
[https://git-scm.com/book/en/v2/Git-Internals-Packfiles|pack-files],
whereas Fossil stores its objects in a [https://www.sqlite.org/|SQLite]
database file which provides ACID transactions and a high-level query
language.
This difference is more than an implementation detail. It has important
practical consequences.

One notable consequence is that it is difficult to find the descendants
of check-ins in Git.
One can easily locate the ancestors of a particular Git check-in
by following the pointers embedded in the check-in object, but it is
difficult to go the other direction and locate the descendants of a
check-in.  It is so difficult, in fact, that neither native Git nor
GitHub provide this capability short of crawling the
[https://www.git-scm.com/docs/git-log|commit log].  With Fossil,
on the other hand, finding descendants is a simple SQL query.
It is common in Fossil to ask to see
[/timeline?df=release&y=ci|all check-ins since the last release].
Git lets you see "what came before".  Fossil makes it just as
easy to also see "what came after".

Leaf check-ins in Git that lack a "ref" become "detached," making them
difficult to locate and subject to garbage collection. This
[http://gitfaq.org/1/01/what-is-a-detached-head/|detached head
state] problem has caused grief for
[https://www.google.com/search?q=git+detached+head+state | many
Git users]. With
Fossil, detached heads are simply impossible because we can always find
our way back into the Merkle tree using one or more of the relations
in the SQL database.

The SQL query capabilities of Fossil make it easier to track the
changes for one particular file within a project.  For example,
you can easily find
[/finfo/www/fossil-v-git.wiki|the complete edit history of this one document],
or even 
[/finfo/www/fossil-v-git.wiki?ubg|the same history color-coded by committer],
Both questions are simple SQL query in Fossil, with procedural code
only being used to format the result for display.
The same result could be obtained from Git, but because the data is
in a key/value store, much more procedural code has to be written to
walk the data and compute the result. And since that is a lot more
work, the question is seldom asked.

The ease of querying Fossil data using SQL means that status or
history information about the project under management is easier
to obtain. Being easier means that it is more likely to happen.
Fossil reports tend to be more detailed and useful.
Compare [/timeline?c=6df7a853ec16865b|this Fossil timeline] 
to
[https://github.com/drhsqlite/fossil-mirror/commits/master?after=f720c106d297ca1f61bccb30c5c191b88a626d01+34 |
its closest equivalent in GitHub].  Judge for yourself: which of those
reports is more useful to a developer trying to understand what happened?

The bottom line is that even though Fossil and Git are built around
the same low-level data structure, the use of SQL
to query this data makes the data more accessible in Fossil, resulting
in more detailed information being available to the user.  This
improves situational awareness and makes working on the project
easier.

<h3 id="portable">2.4 Portable</h3>

Fossil is largely written in ISO C, almost purely conforming to the
original 1989 standard. We make very little use of
[https://en.wikipedia.org/wiki/C99|C99], and we do not knowingly make
any use of
[https://en.wikipedia.org/wiki/C11_(C_standard_revision)|C11]. Fossil
does call POSIX and Windows APIs where necessary, but it's about
as portable as you can ask given that ISO C doesn't define all of the
facilities Fossil needs to do its thing. (Network sockets, file locking,
etc.) There are certainly well-known platforms Fossil hasn't been ported
to yet, but that's most likely due to lack of interest rather than
inherent difficulties in doing the port. We believe the most stringent
limit on its portability is that it assumes at least a 32-bit CPU and
several megs of flat-addressed memory.â´ Fossil isn't quite as
[https://www.sqlite.org/custombuild.html|portable as SQLite], but it's
close.

Over half of the C code in Fossil is actually an embedded copy of the
current version of SQLite. Much of what is Fossil-specific after you set
SQLite itself aside is SQL code calling into SQLite. The number of lines
of SQL code in Fossil isn't large by percentage, but since SQL is such
an expressive, declarative language, it has an outsized contribution to
Fossil's user-visible functionality.

Fossil isn't entirely C and SQL code. Its web UI [./javascript.md |
uses JavaScript where
necessary]. The server-side
UI scripting uses a custom minimal
[https://en.wikipedia.org/wiki/Tcl|Tcl] dialect called
[https://fossil-scm.org/xfer/doc/trunk/www/th1.md|TH1], which is
embedded into Fossil itself. Fossil's build system and test suite are
largely based on Tcl.âµ All of this is quite portable.

About half of Git's code is POSIX C, and about a third is POSIX shell
code. This is largely why the so-called "Git for Windows" distributions
(both [https://git-scm.com/download/win|first-party] and
[https://gitforwindows.org/|third-party]) are actually an
[https://www.msys2.org/wiki/Home/|MSYS POSIX portability environment] bundled
with all of the Git stuff, because it would be too painful to port Git
natively to Windows. Git is a foreign citizen on Windows, speaking to it
only through a translator.â¶

While Fossil does lean toward POSIX norms when given a choice — LF-only
line endings are treated as first-class citizens over CR+LF, for example
— the Windows build of Fossil is truly native.

The third-party extensions to Git tend to follow this same pattern.
[https://docs.gitlab.com/ee/install/install_methods.html#microsoft-windows | 
GitLab isn't portable to Windows at all],
for example. For that matter, GitLab isn't even officially supported on
macOS, the BSDs, or uncommon Linuxes! We have many users who regularly
build and run Fossil on all of these systems.


<h3 id="vs-linux">2.5 Linux vs. SQLite</h3>

Fossil and Git promote different development styles because each one was
specifically designed to support the creator's main software
development project: [https://en.wikipedia.org/wiki/Linus_Torvalds|Linus
Torvalds] designed Git to support development of
[https://www.kernel.org/|the Linux kernel], and
[https://en.wikipedia.org/wiki/D._Richard_Hipp|D. Richard Hipp] designed
Fossil to support the development of [https://sqlite.org/|SQLite].
Both projects must rank high on any objective list of "most
important FOSS projects," yet these two projects are almost entirely unlike
one another, so it is natural that the DVCSes created to support these
projects also differ in many ways.

In the following sections, we will explain how four key differences
between the Linux and SQLite software development projects dictated the
design of each DVCS's low-friction usage path.

When deciding between these two DVCSes, you should ask yourself, "Is my
project more like Linux or more like SQLite?"


<h4 id="devorg">2.5.1 Development Organization</h4>

Eric S. Raymond's seminal essay-turned-book
"[https://en.wikipedia.org/wiki/The_Cathedral_and_the_Bazaar|The
Cathedral and the Bazaar]" details the two major development
organization styles found in
[https://en.wikipedia.org/wiki/Free_and_open-source_software|FOSS]
projects. As it happens, Linux and SQLite fall on opposite sides of this
dichotomy. Differing development organization styles dictate a different
design and low-friction usage path in the tools created to support each
project.

Git promotes the Linux kernel's bazaar development style, in which a
loosely-associated mass of developers contribute their work through
[https://git-scm.com/book/en/v2/Distributed-Git-Distributed-Workflows#_dictator_and_lieutenants_workflow|a
hierarchy of lieutenants] who manage and clean up these contributions
for consideration by Linus Torvalds, who has the power to cherry-pick
individual contributions into his version of the Linux kernel. Git
allows an anonymous developer to rebase and push specific locally-named
private branches, so that a Git repo clone often isn't really a clone at
all: it may have an arbitrary number of differences relative to the
repository it originally cloned from. Git encourages siloed development.
Select work in a developer's local repository may remain private
indefinitely.

All of this is exactly what one wants when doing bazaar-style
development.

Fossil's normal mode of operation differs on every one of these points,
with the specific designed-in goal of promoting SQLite's cathedral
development model:

  *  <b>Personal engagement:</b> SQLite's developers know each
     other by name and work together daily on the project.
 
  *  <b>Trust over hierarchy:</b> SQLite's developers check
     changes into their local repository, and these are immediately and
     automatically synchronized up to the central repository; there is no
     "[https://git-scm.com/book/en/v2/Distributed-Git-Distributed-Workflows#_dictator_and_lieutenants_workflow|dictator
     and lieutenants]" hierarchy as with Linux kernel contributions.  D.
     Richard Hipp rarely overrides decisions made by those he has trusted
     with commit access on his repositories. Fossil allows you to give
     [./caps/admin-v-setup.md|some users] more power over what
     they can do with the repository, but Fossil [./caps/index.md#ucap |
     only loosely supports] the enforcement of a development organization's
     social and power hierarchies. Fossil is a great fit for
     [https://en.wikipedia.org/wiki/Flat_organization|flat
     organizations].
 
  *  <b>No easy drive-by contributions:</b> Git
     [https://www.git-scm.com/docs/git-request-pull|pull requests] offer
     a low-friction path to accepting
     [https://www.jonobacon.com/2012/07/25/building-strong-community-structural-integrity/|drive-by
     contributions]. Fossil's closest equivalents are its unique
     [/help?cmd=bundle|bundle] and [/help?cmd=patch|patch] features, which require higher engagement
     than firing off a PR.â· This difference comes directly from the
     initial designed purpose for each tool: the SQLite project doesn't
     accept outside contributions from previously-unknown developers, but
     the Linux kernel does.
 
  *  <b>No rebasing:</b> When your local repo clone syncs changes
     up to its parent, those changes are sent exactly as they were
     committed locally. [#history|There is no rebasing mechanism in
     Fossil, on purpose.]
 
  *  <b>Sync over push:</b> Explicit pushes are uncommon in
     Fossil-based projects: the default is to rely on
     [/help?cmd=autosync|autosync mode] instead, in which each commit
     syncs immediately to its parent repository. This is a mode so you
     can turn it off temporarily when needed, such as when working
     offline. Fossil is still a truly distributed version control system;
     it's just that its starting default is to assume you're rarely out
     of communication with the parent repo.
     <br><br>
     This is not merely a reflection of modern always-connected computing
     environments. It is a conscious decision in direct support of
     SQLite's cathedral development model: we don't want developers going
     dark, then showing up weeks later with a massive bolus of changes
     for us to integrate all at once.
     [https://en.wikipedia.org/wiki/Jim_McCarthy_(author)|Jim McCarthy]
     put it well in his book on software project management,
     <i>[https://www.amazon.com/dp/0735623198/|Dynamics of Software
     Development]</i>: "[https://www.youtube.com/watch?v=oY6BCHqEbyc|Beware
     of a guy in a room]."
 
  *  <b>Branch names sync:</b> Unlike in Git, branch names in
     Fossil are not purely local labels. They sync along with everything
     else, so everyone sees the same set of branch names. Fossil's design
     choice here is a direct reflection of the Linux vs. SQLite project
     outlook: SQLite's developers collaborate closely on a single
     coherent project, whereas Linux's developers go off on tangents and
     occasionally send selected change sets to each other.
 
  *  <b>Private branches are rare:</b>
     [/doc/trunk/www/private.wiki|Private branches exist in Fossil], but
     they're normally used to handle rare exception cases, whereas in
     many Git projects, they're part of the straight-line development
     process.
 
  *  <b>Identical clones:</b> Fossil's autosync system tries to
     keep each local clone identical to the repository it cloned
     from.

Where Git encourages siloed development, Fossil fights against it.
Fossil places a lot of emphasis on synchronizing everyone's work and on
reporting on the state of the project and the work of its developers, so
that everyone — especially the project leader — can maintain a better
mental picture of what is happening, leading to better situational
awareness.

By contrast, "…[https://docs.github.com/en/get-started/quickstart/contributing-to-projects|forking is
at the core of social coding at GitHub]".  As of January 2022,
[https://github.com/search?q=is:public|Github hosts 47 million distinct
software projects], most of which were created by forking a
previously-existing project. Since this is
[https://evansdata.com/reports/viewRelease.php?reportID=9 | roughly
twice the number of developers in the world], it beggars belief that
most of these forks are still under active development.  The vast bulk
of these must be abandoned one-off efforts. This is part of the nature
of bazaar style development.

You can think about this difference in terms of
[https://en.wikipedia.org/wiki/Feedback | feedback loop size], which we
know from the mathematics of
[https://en.wikipedia.org/wiki/Control_theory | control theory] to
directly affect the speed at which any system can safely make changes.
The larger the feedback loop, the slower the whole system must run in
order to avoid loss of control. The same concept shows up in other
contexts, such as in the [https://en.wikipedia.org/wiki/OODA_loop | OODA
loop] concept.
Committing your changes to private branches in order to delay a public
push to the parent repo increases the size of your collaborators'
control loops, either causing them to slow their work in order to safely
react to your work, or to over-correct in response to each change.

Each DVCS can be used in the opposite style, but doing so works against
their low-friction paths.


<h4 id="scale">2.5.2 Scale</h4>

The Linux kernel has a far bigger developer community than that of
SQLite: there are thousands and thousands of contributors to Linux, most
of whom do not know each other's names. These thousands are responsible
for producing roughly 89× more code than is in SQLite. (10.7
[https://en.wikipedia.org/wiki/Source_lines_of_code|MLOC] vs. 0.12 MLOC
according to [https://dwheeler.com/sloccount/|SLOCCount].) The Linux
kernel and its development process were already uncommonly large back in
2005 when Git was designed, specifically to support the consequences of
having such a large set of developers working on such a large code base.

95% of the code in SQLite comes from just four programmers, and 64% of
it is from the lead developer alone. The SQLite developers know each
other well and interact daily. Fossil was designed for this development
model.

When choosing your DVCS, we think you should ask yourself whether the
scale of your software configuration management problems is closer to
those Linus Torvalds designed Git to cope with or whether your work's
scale is closer to that of SQLite, for which D. Richard Hipp designed
Fossil. An [https://en.wikipedia.org/wiki/Impact_wrench|automotive air
impact wrench] running at 8000 RPM driving an M8 socket-cap bolt at 16
cm/s is not the best way to hang a picture on the living room wall.

Fossil works well for projects several times the size of SQLite,
[https://core.tcl-lang.org/tcl/ | such as Tcl], with a repository over
twice the size and with many more core committers.


<h4 id="branches">2.5.3 Individual Branches vs. The Entire Change History</h4>

Both Fossil and Git store history as a directed acyclic graph (DAG)
of changes, but Git tends to focus more on individual branches of
the DAG, whereas Fossil puts more emphasis on the entire DAG.

For example, the default behavior in Git is to only synchronize
a single branch, whereas with Fossil the only sync option is to
sync the entire DAG.  Git commands,
GitHub, and GitLab tend to show only a single branch at
a time, whereas Fossil usually shows all parallel branches at
once.  Git has commands like "rebase" that help keep all relevant
changes on a single branch, whereas Fossil encourages a style of
many concurrent branches constantly springing into existence,
undergoing active development in parallel for a few days or weeks, then
merging back into the main line and disappearing.

This difference in emphasis arises from the different purposes of
the two systems.  Git focuses on individual branches, because that
is exactly what you want for a highly-distributed bazaar-style project
such as Linux.  Linus Torvalds does not want to see every check-in
by every contributor to Linux: such extreme visibility does not scale
well.  Contrast Fossil, which was written for the cathedral-style SQLite project
and its handful of active committers.  Seeing all
changes on all branches all at once helps keep the whole team
up-to-date with what everybody else is doing, resulting in a more 
tightly focused and cohesive implementation.

Parts of this section are [https://fossil-scm.org/forum/forumpost/5961e969fa|disputed]
by [https://github.com/olorin37|Jakub A. G.].


<h3 id="checkouts">2.6 One vs. Many Check-outs per Repository</h3>

Because Git commingles the repository data with the initial checkout of
that repository, the default mode of operation in Git is to stick to that
single work/repo tree, even when that's a shortsighted way of working.

Fossil doesn't work that way. A Fossil repository is an SQLite database
file which is normally stored outside the working checkout directory. You can
[/help?cmd=open | open] a Fossil repository any number of times into
any number of working directories. A common usage pattern is to have one
working directory per active working branch, so that switching branches
is done with a <tt>cd</tt> command rather than by checking out the
branches successively in a single working directory.

Fossil does allow you to switch branches within a working checkout
directory, and this is also often done. It is simply that there is no
inherent penalty to either choice in Fossil as there is in Git. The
standard advice is to use a switch-in-place workflow in Fossil when
the disturbance from switching branches is small, and to use multiple
checkouts when you have long-lived working branches that are different
enough that switching in place is disruptive.

While you can [./gitusers.md#worktree | use Git in the Fossil style],
Git's default tie between working directory and
repository means the standard method for working with a Git repo is to
have one working directory only. Most Git tutorials teach this style, so
it is how most people learn to use Git. Because relatively few people
use Git with multiple working directories per repository, there are
[https://duckduckgo.com/?q=git+worktree+problem | several known
problems] with that way of working, problems which don't happen in Fossil because of
the clear [./ckout-workflows.md | separation] between a Fossil repository and
each working directory.

This distinction matters because switching branches inside a single working directory loses local context
on each switch.

For instance, in any software project where the runnable program must be
built from source files, you invalidate build objects on each switch,
artificially increasing the time required to switch versions. Most obviously, this
affects software written in statically-compiled programming languages
such as C, Java, and Haskell, but it can even affect programs written in
dynamic languages like JavaScript. A typical
[https://en.wikipedia.org/wiki/Single-page_application | SPA] build
process involves several passes: [http://browserify.org/ | Browserify] to convert
[https://nodejs.org/ | Node] packages so they'll run in a web browser,
[https://sass-lang.com | SASS] to CSS translation,
transpilation of [https://www.typescriptlang.org | Typescript] to JavaScript,
[https://github.com/mishoo/UglifyJS | uglification], etc.
Once all that processing work is done for a given input
file in a given working directory, why re-do that work just to switch
versions? If most of the files that differ between versions don't change
very often, you can save substantial time by switching branches with
<tt>cd</tt> rather than swapping versions in-place within a working
checkout directory.

For another example, you might have an active long-running test grinding
away in a working directory, then get a call from a customer requiring
that you switch to a stable branch to answer questions in terms of the
version that customer is running. You don't want to stop the test in
order to switch your lone working directory to the stable branch.

Disk space is cheap. Having several working directories — each with its
own local state — makes switching versions cheap and fast.

Plus,
<tt>cd</tt> is faster to type than <tt>git checkout</tt> or <tt>fossil
update</tt>.

Parts of this section are [https://fossil-scm.org/forum/forumpost/5961e969fa|disputed]
by [https://github.com/olorin37|Jakub A. G.].

<h3 id="history">2.7 What you should have done vs. What you actually did</h3>

Git puts a lot of emphasis on maintaining
a "clean" check-in history.  Extraneous and experimental branches by
individual developers often never make it into the main repository.
Branches may be rebased before being pushed to make
it appear as if development had been linear, or "squashed" to make it
appear that multiple commits were made as a single commit.
There are [https://git-scm.com/book/en/v2/Git-Tools-Rewriting-History |
other history rewriting mechanisms in Git] as well. Git strives to record what
the development of a project should have looked like had there been no
mistakes.

Fossil, in contrast, puts more emphasis on recording exactly what happened,
including all of the messy errors, dead-ends, experimental branches, and
so forth.  One might argue that this
makes the history of a Fossil project "messy," but another point of view
is that this makes the history "accurate."  In actual practice, the
superior reporting tools available in Fossil mean that this incidental mess
is not a factor.

Like Git, Fossil has an [/help?cmd=amend|amend command] for modifying
prior commits, but unlike in Git, this works not by replacing data in
the repository, but by adding a correction record to the repository that
affects how later Fossil operations present the corrected data. The old
information is still there in the repository, it is just overridden from
the amendment point forward.

Fossil lacks almost every other history rewriting mechanism listed on
the Git documentation page linked above. [./rebaseharm.md | There is no
rebase] in Fossil, on purpose, thus no way to reorder or copy commits
around in the commit hash tree. There is no commit squashing, dropping,
or interactive patch-based cherry-picking of commit elements in Fossil.
There is nothing like Git's <tt>filter-branch</tt> in Fossil.

The lone exception is deleting commits. Fossil has two methods for doing
that, both of which have stringent limitations, on purpose.

The first is [/doc/trunk/www/shunning.wiki | shunning]. See that
document for details, but briefly, you only get mandatory compliance
for shun requests within a single repository. Shun requests do not
propagate automatically between repository clones. A Fossil repository
administrator can <i>cooperatively</i> pull another repo's shun requests
across a sync boundary, so that two admins can get together and agree to
shun certain committed artifacts, but a person cannot force their local
shun requests into another repo without having admin-level control over
the receiving repo as well. Fossil's shun feature isn't for fixing up
everyday bad commits, it's for dealing with extreme situations: public
commits of secret material, ticket/wiki/forum spam, law enforcement
takedown demands, etc.

There is also the experimental [/help?cmd=purge | <tt>purge</tt>
command], which differs from shunning in ways that aren't especially
important in the context of this document. At a 30000 foot level, you
can think of purging as useful only when you've turned off Fossil's
autosync feature and want to pluck artifacts out of its hash tree before
they get pushed. In that sense, it's approximately the same as
<tt>git rebase -i, drop</tt>. However, given that Fossil defaults to
having autosync enabled [#devorg | for good reason], the purge command
isn't very useful in practice: once a commit has been pushed into
another repo, shunning is more useful if you need to delete it from
history.

If these accommodations strike you as incoherent with respect to
Fossil's philosophy of durable, unchanging commits, realize that if
shunning and purging were removed from Fossil, you could still remove
artifacts from the repository with SQL <tt>DELETE</tt> statements; the
repository database file is, after all, directly modifiable, being
writable by your user. Where the Fossil philosophy really takes hold is
in making it difficult to violate the integrity of the hash tree.
It's somewhat tangential, but the document [./blockchain.md | "Is Fossil
a Blockchain?"] touches on this and related topics.

One commentator characterized Git as recording history according to
the victors, whereas Fossil records history as it actually happened.


<h3 id="testing">2.8 Test Before Commit</h3>

One of the things that falls out of Git's default separation of commit
from push is that there are several Git sub-commands that jump straight
to the commit step before a change could possibly be tested. Fossil, by
contrast, makes the equivalent change to the local working check-out
only, requiring a separate check-in step to commit the change. This
design difference falls naturally out of Fossil's default-enabled
autosync feature and its philosophy of [#history | not offering history
rewriting features].

The prime example in Git is rebasing: the change happens to the local
repository immediately if successful, even though you haven't tested the
change yet. It's possible to argue for such a design in a tool like Git
since it lacks an autosync feature, because you can still test the
change before pushing local changes to the parent repo, but in the
meantime you've made a durable change to your local Git repository. You
must do something drastic like <tt>git reset --hard</tt> to revert that
rebase or rewrite history before pushing it if the rebase causes a
problem. If you push your rebased local repo up to the parent without
testing first, you cannot fix it without violating
[https://www.atlassian.com/git/tutorials/merging-vs-rebasing#the-golden-rule-of-rebasing
| the golden rule of rebasing].

Lesser examples are the Git <tt>merge</tt>, <tt>cherry-pick</tt>, and
<tt>revert</tt> commands, all of which apply work from one branch onto
another, and all of which commit their change to the local repository
immediately without giving you
an opportunity to test the change first unless you give the
<tt>--no-commit</tt> option. Otherwise, you're back in the same boat:
reset the local repository or rewrite history to fix things, then maybe
retry.

Fossil cannot sensibly work that way because of its default-enabled
autosync feature and its purposeful paucity of commands for modifying
commits, as discussed in [#history | the prior section].

Instead of jumping straight to the commit step, Fossil
applies the proposed merge to the local working directory only,
requiring a separate check-in step before the change is committed to the
repository. This gives you a chance to test the change first,
either manually or by running your software's automatic tests. (Ideally,
both!) Thus, Fossil doesn't need rebase, squashing,
<tt>reset --hard</tt>, or other Git commit mutating mechanisms.

Because Fossil requires an explicit commit for a merge, it has the nice
side benefit that it makes you give an explicit commit <i>message</i>
for each merge, whereas Git writes that commit message itself by default
unless you give the optional <tt>--edit</tt> flag to override it.

We don't look at this difference as a workaround in Fossil for autosync,
but instead as a test-first philosophical difference:
<tt>fossil commit</tt> is a <i>commitment</i>. When every commit is
pushed to the parent repo by default, it encourages a working style in
which every commit is tested first. It encourages thinking before
acting. We believe this is an inherently good thing.

Incidentally, this is a good example of Git's messy command design.
These three commands:

<pre>
$ git merge HASH 
$ git cherry-pick HASH 
$ git revert HASH
</pre>

...are all the same command in Fossil:

<pre>
$ fossil merge HASH
$ fossil merge --cherrypick HASH
$ fossil merge --backout HASH
</pre>

If you think about it, they're all the same function: apply work done on
one branch to another. All that changes between these commands is how
much work gets applied — just one check-in or a whole branch — and the
merge direction.  This is the sort of thing we mean when we point out
that Fossil's command interface is simpler than Git's: there are fewer
concepts to keep track of in your mental model of Fossil's internal
operation.

Fossil's implementation of the feature is also simpler to describe. The
brief online help for <tt>[/help?cmd=merge | fossil merge]</tt> is
currently 41 lines long, to which you want to add the 600 lines of
[./branching.wiki | the branching document]. The equivalent
documentation in Git is the aggregation of the man pages for the above
three commands, which is over 1000 lines, much of it mutually redundant.
(e.g.  Git's <tt>--edit</tt> and <tt>--no-commit</tt> options get
described three times, each time differently.) Fossil's
documentation is not only more concise, it gives a nice split of brief
online help and full online documentation.


<h3 id="hash">2.9 Hash Algorithm: SHA-3 vs SHA-2 vs SHA-1</h3>

Fossil started out using 160-bit SHA-1 hashes to identify check-ins,
just as in Git. That changed in early 2017 when news of the
[https://shattered.io/|SHAttered attack] broke, demonstrating that SHA-1
collisions were now practical to create. Two weeks later, the creator of
Fossil delivered a new release allowing a clean migration to
[https://en.wikipedia.org/wiki/SHA-3|256-bit SHA-3] with
[./hashpolicy.wiki|full backwards compatibility] to old SHA-1 based
repositories.

In October 2019, after the last of the major binary
package repos offering Fossil upgraded to Fossil 2.<i>x</i>,
we switched the default hash mode so that
the conversion to SHA-3 is fully automatic.
This not
only solves the SHAttered problem, it should prevent a reoccurrence of
similar problems for the foreseeable future.

Meanwhile, the Git community took until August 2018 to publish
[https://git-scm.com/docs/hash-function-transition/|their first plan]
for solving the same problem by moving to SHA-256, a variant of the
[https://en.wikipedia.org/wiki/SHA-2 | older SHA-2 algorithm].  As of
this writing in February 2020, that plan hasn't been implemented, as far
as this author is aware, but there is now
[https://lwn.net/ml/git/20200113124729.3684846-1-sandals@crustytoothpaste.net/
| a competing SHA-256 based plan] which requires complete repository
conversion from SHA-1 to SHA-256, breaking all public hashes in the
repo. One way to characterize such a massive upheaval in Git terms is a
whole-project rebase, which violates the
[https://www.atlassian.com/git/tutorials/merging-vs-rebasing#the-golden-rule-of-rebasing|Golden Rule of Rebasing].

Regardless of the eventual implementation details, we fully expect Git
to move off SHA-1 eventually and for the changes to take years more to
percolate through the community.

Almost three years after Fossil solved this problem, the
[https://sha-mbles.github.io/ | SHAmbles attack] was published, further
weakening the case for continuing to use SHA-1.

The practical impact of attacks like SHAttered and SHAmbles on the
Git and Fossil Merkle trees isn't clear, but you want to have your repositories
moved over to a stronger hash algorithm before someone figures out how
to make use of the weaknesses in the old one. Fossil has had this covered
for years now, so that the solution is now almost universally deployed.

<hr/>

<h3>Asides and Digressions</h3>

<i><small><ol>
    <li><p>[./mirrorlimitations.md|Many
    things are lost] in making a Git mirror of a Fossil repo due to
    limitations of Git relative to Fossil. GitHub adds some of these
    missing features to stock
    Git, but because they're not part of Git proper,
    [./mirrortogithub.md|exporting a Fossil repository to GitHub] will
    still not include them; Fossil tickets do not become GitHub issues,
    for example.

    <li><p>The <tt>fossil-scm.org</tt> web site is actually hosted in
    several parts, so that it is not strictly true that "everything" on
    it is in the self-hosting Fossil project repo. The web forum is
    hosted as [https://fossil-scm.org/forum/|a separate Fossil repo]
    from the [https://fossil-scm.org/home/|main Fossil self-hosting
    repo] for administration reasons, and the Download page content
    isn't normally synchronized with a "<tt>fossil clone</tt>" command unless
    you add the "-u" option.  (See "[./aboutdownload.wiki|How the
    Download Page Works]" for details.)
    Chat history is deliberately not synced as
    chat messages are intended to be ephemeral.
    There may also be some purely
    static elements of the web site served via D. Richard Hipp's own
    lightweight web server,
    <tt>[https://sqlite.org/althttpd/|althttpd]</tt>,
    which is configured as a front end to Fossil running in CGI mode on
    these sites.

    <li><p>That estimate is based on pricing at Digital Ocean in
    mid-2019: Fossil will run just fine on the smallest instance they
    offer, at US $5/month, but the closest match to GitLab's minimum
    requirements among Digital Ocean's offerings currently costs
    $40/month.

    <li><p>This means you can give up waiting for Fossil to be ported to
    the PDP-11, but we remain hopeful that someone may eventually port
    it to [https://en.wikipedia.org/wiki/Z/OS|z/OS].

    <li><p>"Why is there all this Tcl in and around Fossil?" you may
    ask. It is because D. Richard Hipp is a long-time Tcl user and
    contributor. SQLite started out as an embedded database for Tcl
    specifically. ([https://sqlite.org/tclsqlite.html | [Reference]])
    When he then created Fossil to manage the development of SQLite, it
    was natural for him to use Tcl-based tools for its scripting, build
    system, test system, etc. It came full circle in 2011 when
    [https://www.reddit.com/r/programming/comments/fwrx5/tcl_and_tk_move_away_from_cvs_to_fossil/
    | the Tcl and Tk projects moved from CVS to Fossil].

    <li><p>A minority of the pieces of the Git core software suite are
    written in other languages, primarily Perl, Python, and Tcl. (e.g.
    <tt>git-send-mail</tt>, <tt>git-p4</tt>, and <tt>gitk</tt>,
    respectively.)  Although these interpreters are quite portable, they
    aren't installed by default everywhere, and on some platforms you
    can't count on them at all. (Not just Windows, but also the BSDs and
    many other non-Linux platforms.) This expands the dependency
    footprint of Git considerably. It is why the current Git for Windows
    distribution is 44.7&nbsp;MiB but the current <tt>fossil.exe</tt>
    zip file for Windows is 2.24&nbsp;MiB. Fossil is much smaller
    despite using a roughly similar amount of high-level scripting code
    because its interpreters are compact and built into Fossil itself.

    <li><p>Both Fossil and Git support
    [https://en.wikipedia.org/wiki/Patch_(Unix)|<tt>patch(1)</tt>
    files] — unified diff formatted output — for accepting drive-by contributions, but it's a
    lossy contribution path for both systems. Unlike Git PRs and Fossil
    bundles, patch files collapse multiple checkins together, they don't
    include check-in comments, and they cannot encode changes made above
    the individual file content layer: you lose branching decisions,
    tag changes, file renames, and more when using patch files. The
    [./patchcmd.md | <tt>fossil patch</tt> command]
    also solves these problems, but it is because it works like a Fossil
    bundle, only for uncommitted changes; it doesn't use Larry Wall's
    <tt>patch</tt> tool to apply unified diff output to the receiving
    Fossil checkout.</p></li>
</ol></i></small>
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12410 11353 m  12365 11314 12499 11087 12709 10847 ct 12920 10607 13126 10444 13171 10483 ct 
13216 10522 13082 10749 12872 10989 ct 12662 11230 12455 11392 12410 11353 ct 
12410 11353 m  12365 11314 12499 11087 12709 10847 ct 12920 10607 13126 10444 13171 10483 ct
13216 10522 13082 10749 12872 10989 ct 12662 11230 12455 11392 12410 11353 ct
p ef
7901 12525 m  7790 12525 7700 12212 7700 11826 ct 7700 11440 7790 11127 7901 11127 ct 
7901 12525 m  7790 12525 7700 12212 7700 11826 ct 7700 11440 7790 11127 7901 11127 ct
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7826 12575 m  7765 12668 7415 12547 7044 12306 ct 6672 12064 6420 11793 6480 11700 ct
6541 11607 6891 11728 7262 11970 ct 7634 12211 7886 12482 7826 12575 ct p ef
6460 11694 m  6435 11723 6333 11673 6234 11584 ct 6134 11494 6073 11399 6099 11371 ct 
6460 11694 m  6435 11723 6333 11673 6234 11584 ct 6134 11494 6073 11399 6099 11371 ct
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13183 10437 m  13129 10414 13185 10157 13309 9863 ct 13433 9569 13579 9350 13633 9373 ct 
13183 10437 m  13129 10414 13185 10157 13309 9863 ct 13433 9569 13579 9350 13633 9373 ct
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9900 11524 m  9790 11524 9701 11211 9701 10825 ct 9701 10439 9790 10126 9900 10126 ct
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p ef
9828 11574 m  9767 11667 9417 11546 9046 11305 ct 8674 11063 8422 10792 8482 10699 ct 
9828 11574 m  9767 11667 9417 11546 9046 11305 ct 8674 11063 8422 10792 8482 10699 ct
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0 10008 t 
0 10008 t
pom
count op_count sub {pop} repeat countdictstack dict_count sub {end} repeat b4_inc_state restore
%%PageTrailer
%%Trailer
%%EOF
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%%EndProlog
%%BeginSetup
%%EndSetup
%%Page: 1 1
%%BeginPageSetup
%%EndPageSetup
pum
0.02833 0.02833 s 
0.02833 0.02833 s
0 -25940 t
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1 1 s 
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1 1 s
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count op_count sub {pop} repeat countdictstack dict_count sub {end} repeat b4_inc_state restore
%%PageTrailer
%%Trailer
%%EOF
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#-------------------------------------------------------------------------
#   get_fossil_data()
#
# If the current directory is part of a fossil checkout, then populate
# a series of global variables based on the current state of that
# checkout. Variables are populated based on the output of the [fossil info]
# command.
#
# If the current directory is not part of a fossil checkout, set global
# variable $fossil_info_project_name to an empty string and return.
#
function get_fossil_data() {
  fossil_info_project_name=""
  eval `get_fossil_data2`
}
function get_fossil_data2() {
  fossil info 2> /dev/null |tr '\042\047\140' _|grep "^[^ ]*:" |
  while read LINE ; do
    local field=`echo $LINE | sed 's/:.*$//' | sed 's/-/_/'`
    local value=`echo $LINE | sed 's/^[^ ]*: *//'`
    echo fossil_info_${field}=\"${value}\"
  done
}

#-------------------------------------------------------------------------
#   set_prompt()
#
# Set the PS1 variable. If the current directory is part of a fossil
# checkout then the prompt contains information relating to the state
# of the checkout. 
#
# Otherwise, if the current directory is not part of a fossil checkout, it
# is set to a fairly standard bash prompt containing the host name, user
# name and current directory.
#
function set_prompt() {
  get_fossil_data
  if [ -n "$fossil_info_project_name" ] ; then 
    # Color the path part of the prompt blue if this is a clean checkout
    # Or red if it has been edited in any way at all. Set $c1 to the escape
    # sequence required to change the type to the required color. And $c2
    # to the sequence that changes it back.
    #
    if [ -n "`fossil chang`" ] ; then
      c1="\[\033[1;31m\]"           # red
    else
      c1="\[\033[1;34m\]"           # blue
    fi
    c2="\[\033[0m\]"
    PS1="\[\033[01;32m\]\u@\h\[\033[00m\]:$c1\w\$$c2 "
  else
    PS1="\[\033[01;32m\]\u@\h\[\033[00m\]:\w\$ "
  fi
}

PROMPT_COMMAND=set_prompt
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<title>Fossilized Bash Prompt</title>

Dan Kennedy has contributed a
[./fossil_prompt.sh?mimetype=text/plain | bash script]
that manipulates the bash prompt to show the status of
the Fossil repository that the user is currently visiting.
The prompt shows the branch, version, and time stamp for the
current checkout, and the prompt changes colors from blue to
red when there are uncommitted changes.

To try out this script, simply download it from the link above, then
type:

<pre>
. fossil_prompt.sh
</pre>

For a permanent installation, you can graft the code into your
<tt>.bashrc</tt> file in your home directory.

The code is very simple (only 32 non-comment lines, as of this writing)
and hence easy to customize.
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# Git to Fossil Translation Guide

## Introduction

Fossil shares many similarities with Git.  In many cases, the
sub-commands are identical: [`fossil bisect`][fbis] does essentially the
same thing as [`git bisect`][gbis], for example.

Yet, Fossil is not merely Git with a bunch of commands misspelled. If
that were the case, we could give you a two-column translation table
which would tell you [how to say things like “`git reset --hard HEAD`â€](#reset) in
this funny ol’ Fossil dialect of Git and be done. The purpose of this
document is to cover all the cases where there is no simple 1:1 mapping,
usually because of intentional design differences in Fossil that prevent
it from working exactly like Git. We choose to explain these differences
since to understand the conversion, you need to know why each difference
exists.

We focus on practical command examples here, leaving discussions of the
philosophical underpinnings that drive these command differences to [another
document][fvg]. The [case studies](#cs1) do get a bit philosophical, but
it is with the aim of illustrating how these Fossil design differences
cause Fossil to behave materially differently from Git in everyday
operation.

We present this from the perspective of Git users moving to Fossil, but
it is also possible to read this document as a Fossil user who speaks
only pidgin Git, who may often have questions of the form, “Now how do I
do X in Git again?â€

This document’s authors are intimately familiar with Fossil, so it is
difficult for us to anticipate the perspective of people who are
intimately familiar with Git. If you have a lot of prior Git
experience, we welcome your contributions and questions on the [Fossil
Forum][ffor].

While we do try to explain Fossil-specific terminology inline here
as-needed, you may find it helpful to skim [the Fossil glossary][gloss].
It will give you another take on our definitions here, and it may help
you to understand some of the other Fossil docs better.

[fbis]:  /help?cmd=bisect
[gbis]:  https://git-scm.com/docs/git-bisect
[ffor]:  https://fossil-scm.org/forum
[fvg]:   ./fossil-v-git.wiki


<a id="mwd"></a>
## Repositories and Checkouts Are Distinct

A repository and a check-out are distinct in Fossil, allowing them to be
stored in separate directory trees, whereas the two are commingled by
default with Git, with the repository stored in a `.git` subdirectory
underneath your working directory. This difference shows up in several
separate places when it comes to moving from Git to Fossil.



#### <a id="cwork" name="scw"></a> Checkout Workflows

A Fossil repository is an SQLite database storing the entire history of a
project. It is not normally stored inside the working tree.
A Fossil working tree — [also called a check-out](./glossary.md#check-out) — is a directory
that contains a snapshot of your project that you are currently working
on, extracted for you from the repository database file by the `fossil`
program.

There are ways to
[emulate the Fossil working style in Git](#worktree), but because they’re not
designed into the core concept of the tool, Git tutorials usually
advocate a switch-in-place working mode instead, so that is how most
users end up working with Git. Contrast [Fossil’s check-out workflow
document][ckwf] to see the practical differences.

There is one Git-specific detail we wish to add beyond what that
document already covers. This command:

    git checkout some-branch

…is best given as:

    fossil update some-branch

…in Fossil. There is a [`fossil checkout`][co] command, but it has
[several differences](./co-vs-up.md) that make it less broadly useful
than [`fossil update`][up] in everyday operation, so we recommend that
Git users moving to Fossil develop a habit of typing `fossil up` rather
than `fossil checkout`. That said, one of those differences does match
up with Git users’ expectations: `fossil checkout` doesn’t pull changes
from the remote repository into the local clone as `fossil update` does.
We think this is less broadly useful, but that’s the subject of the next
section.

[ckwf]: ./ckout-workflows.md
[co]:   /help?cmd=checkout


#### <a id="pullup"></a> Update vs Pull

The closest equivalent to [`git pull`][gpull] is not
[`fossil pull`][fpull], but in fact [`fossil up`][up].

This is because
Fossil tends to follow the CVS command design: `cvs up` pulls
changes from the central CVS repository and merges them into the local
working directory, so that’s what `fossil up` does, too. (This design
choice also tends to make Fossil feel comfortable to Subversion
expatriates.)

The `fossil pull` command is simply the reverse of
`fossil push`, so that `fossil sync` [is functionally equivalent
to](./sync.wiki#sync):

    fossil push ; fossil pull

There is no implicit “and update the local working directory†step in Fossil’s
push, pull, or sync commands, as there is with `git pull`.

Someone coming from the Git perspective may perceive that `fossil up`
has two purposes:

*   Without the optional `VERSION` argument, it updates the working
    check-out to the tip of the current branch, as `git pull` does.

*   Given a `VERSION` argument, it updates to the named version. If that’s the
    name of a branch, it updates to the *tip* of that branch, as
    `git checkout BRANCH` does.

In fact, these are the same operation, so they’re the same command in
Fossil. The first form simply allows the `VERSION` to be implicit: the
tip of the current branch.

We think this is a more sensible command design than `git pull` vs
`git checkout`. ([…vs `git checkout` vs `git checkout`!][gcokoan])

[fpull]:   /help?cmd=pull
[gpull]:   https://git-scm.com/docs/git-pull
[gcokoan]: https://stevelosh.com/blog/2013/04/git-koans/#s2-one-thing-well


#### <a id="close" name="dotfile"></a> Closing a Check-Out

The [`fossil close`][close] command dissociates a check-out directory from the
Fossil repository database, _nondestructively_ inverting [`fossil open`][open].
(Contrast Git’s [closest alternative](#worktree), `git worktree remove`, which *is*
destructive!) This Fossil command does not
remove the managed files, and unless you give the `--force`
option, it won’t let you close the check-out with uncommitted changes to
those managed files.

The `close` command also refuses to run without `--force` when you have
certain other precious per-checkout data that Fossil stores in the
`.fslckout` file at the root of a check-out directory. This is an SQLite
database that keeps track of local state such as what version you have
checked out, the contents of the [stash] for that working directory, the
[undo] buffers, per-checkout [settings][set], and so forth. The stash
and undo buffers are considered precious uncommitted changes,
so you have to force Fossil to discard these as part of closing the
check-out.

Thus, `.fslckout` is not the same thing as `.git`!

In native Windows builds of Fossil — that is, excluding Cygwin and WSL
builds, which follow POSIX conventions —  this file is called `_FOSSIL_`
instead to get around the historical 3-character extension limit with
certain legacy filesystems.

Closing a check-out directory is a rare operation. One use case
is that you’re about to delete the directory, so you want Fossil to forget about it
for the purposes of commands like [`fossil all`][all]. Even that isn’t
necessary, because Fossil will detect that this has happened and forget
the working directory for you.

[all]: /help?cmd=all


#### <a id="worktree"></a> Git Worktrees

There are at least three different ways to get [Fossil-style multiple
check-out directories][mcw] with Git.

The old way is to simply symlink the `.git` directory between working
trees:

    mkdir ../foo-branch
    ln -s ../actual-clone-dir/.git .
    git checkout foo-branch

The symlink trick has a number of problems, the largest being that
symlinks weren’t available on Windows until Vista, and until the Windows
10 Creators Update was released in spring of 2017, you had to be an
Administrator to use the feature besides. ([Source][wsyml]) Git 2.5 solved
this problem back when Windows XP was Microsoft’s current offering
by adding the `git-worktree` command:

    git worktree add ../foo-branch foo-branch
    cd ../foo-branch

That is approximately equivalent to this in Fossil:

    mkdir ../foo-branch
    cd ../foo-branch
    fossil open /path/to/repo.fossil foo-branch

The Fossil alternative is wordier, but since this tends to be one-time setup,
not something you do everyday, the overhead is insignificant. This author keeps a “scratch†check-out
for cases where it’s inappropriate to reuse the “trunk†check-out,
isolating all of my expedient switch-in-place actions to that one
working directory. Since the other peer check-outs track long-lived
branches, and that set rarely changes once a development machine is set
up, I rarely pay the cost of these wordier commands.

That then leads us to the closest equivalent in Git to [closing a Fossil
check-out](#close):

    git worktree remove .

Note, however, that unlike `fossil close`, once the Git command
determines that there are no uncommitted changes, it blows away all of
the checked-out files! Fossil’s alternative is shorter, easier to
remember, and safer.

There’s another way to get Fossil-like separate worktrees in Git:

    git clone --separate-git-dir repo.git https://example.com/repo

This allows you to have your Git repository directory entirely separate
from your working tree, with `.git` in the check-out directory being a
file that points to `../repo.git`, in this example.

[mcw]:   ./ckout-workflows.md#mcw
[wsyml]: https://blogs.windows.com/windowsdeveloper/2016/12/02/symlinks-windows-10/


#### <a id="iip"></a> Init in Place

To illustrate the differences that Fossil’s separation of repository
from working directory creates in practice, consider this common Git “init in placeâ€
method for creating a new repository from an existing tree of files,
perhaps because you are placing that project under version control for
the first time:

    cd long-established-project
    git init
    git add *
    git commit -m "Initial commit of project."

The closest equivalent in Fossil is:

    cd long-established-project
    fossil init .fsl
    fossil open --force .fsl
    fossil add *
    fossil ci -m "Initial commit of project."

Note that unlike in Git, you can abbreviate the “`commit`†command in
Fossil as “`ci`†for compatibility with CVS, Subversion, etc.

This creates a `.fsl` repo DB at the root of the project check-out to
emulate the `.git` repo dir. We have to use the `--force` flag on
opening the new repo because Fossil expects you to open a repo into an
empty directory in order to avoid spamming the contents of a repo over
an existing directory full of files. Here, we know the directory
contains files that will soon belong in the repository, though, so we
override this check. From then on, Fossil works like Git, for the
purposes of this example.

We’ve drawn this example to create a tight parallel between Fossil and
Git, not to commend this `.fsl`-at-project-root trick to you. A better
choice would be `~/museum/home/long-established-project.fossil`, if
you’re following [the directory scheme exemplified in the glossary](./glossary.md#repository). That said, it
does emphasize an earlier point: Fossil doesn’t care where you put the
repo DB file or what you name it.


[clone]:  /help?cmd=clone
[close]:  /help?cmd=close
[gloss]:  ./glossary.md
[open]:   /help?cmd=open
[set]:    /help?cmd=setting
[server]: /help?cmd=server
[stash]:  /help?cmd=stash
[undo]:   /help?cmd=undo


## <a id="log"></a> Fossil’s Timeline Is the “Logâ€

Git users often need to use the `git log` command to dig linearly through
commit histories due to its [weak data model][wdm], giving [O(n)
performance][ocomp].

Fossil parses a huge amount of information out of commits that allow it
to produce its [timeline CLI][tlc] and [its `/timeline` web view][tlw]
using indexed SQL lookups, which generally have the info you would have
to manually extract from `git log`, produced much more quickly than Git
can, all else being equal: operations over [SQLite’s B-tree data structures][btree]
generally run in O(log n) time, faster than O(n) for equal *n* when the
constants are equal.

Yet the constants are *not* equal because Fossil
reads from a single disk file rather than visit potentially many
files in sequence as Git must, so the OS’s buffer cache can result in
[still better performance][35pct].

Unlike Git’s log, Fossil’s timeline shows info across all branches by
default, a feature for maintaining better situational awareness.
It is possible to restrict the timeline to a single branch using `fossil timeline -b`.
Similarly, to restrict the timeline using the web UI equivalent,
click the name of a branch on the `/timeline` or `/brlist` page. (Or
manually, by adding the `r=` query parameter.) Note that even in this
case, the Fossil timeline still shows other branches where they interact
with the one you’ve referenced in this way; again, better situational
awareness.


#### <a id="emu-log"></a> Emulating `git log`

If you truly need a backwards-in-time-only view of history in Fossil to
emulate `git log`, this is as close as you can currently come:

    fossil timeline parents current

Again, though, this isn’t restricted to a single branch, as `git log`
is.

Another useful rough equivalent is:

    git log --raw
    fossil time -v

This shows what changed in each version, though Fossil’s view is more a
summary than a list of raw changes. To dig deeper into single commits,
you can use Fossil’s [`info` command][infoc] or its [`/info` view][infow].

Inversely, you may more exactly emulate the default `fossil timeline`
output with `git log --name-status`.


#### <a id="whatchanged"></a> What Changed?

A related — though deprecated — command is `git whatchanged`, which gives results similar to
`git log --raw`, so we cover it here.

Though there is no `fossil whatchanged` command, the same sort of
information is available. For example, to pull the current changes from
the remote repository and then inspect them before updating the local
working directory, you might say this in Git:

    git fetch
    git whatchanged ..@{u}

…which you can approximate in Fossil as:

    fossil pull
    fossil up -n
    fossil diff --from tip

To invert the `diff` to show a more natural patch, the command needs to
be a bit more complicated, since you can’t currently give `--to`
without `--from`.

    fossil diff --from current --to tip

Rather than use the “dry run†form of [the `update` command][up], you can
say:

    fossil timeline after current

…or if you want to restrict the output to the current branch:

    fossil timeline descendants current


#### <a id="ckin-names"></a> Symbolic Check-In Names

Note the use of [human-readable symbolic version names][scin] in Fossil
rather than [Git’s cryptic notations][gcn].

For a more dramatic example of this, let us ask Git, “What changed since the
beginning of last month?†being October 2020 as I write this:

    git log master@{2020-10-01}..HEAD

That’s rather obscure! Fossil answers the same question with a simpler
command:

    fossil timeline after 2020-10-01

You may need to add `-n 0` to bypass the default output limit of
`fossil timeline`, 20 entries. Without that, this command reads
almost like English.

Some Git users like to write commands like the above so:

    git log @{2020-10-01}..@

Is that better? “@†now means two different things: an at-time reference
and a shortcut for `HEAD`!

If you are one of those that like short commands, Fossil’s method is
less cryptic: it lets you shorten words in most cases up to the point
that they become ambiguous. For example, you may abbreviate the last
`fossil` command in the prior section:

    fossil tim d c

…beyond which the `timeline` command becomes ambiguous with `ticket`.

Some Fossil users employ shell aliases, symlinks, or scripts to shorten
the command still further:

    alias f=fossil
    f tim d c

Granted, that’s rather obscure, but you you can also choose something
intermediate like “`f time desc curr`â€, which is reasonably clear.

[35pct]: https://www.sqlite.org/fasterthanfs.html
[btree]: https://sqlite.org/btreemodule.html
[gcn]:   https://git-scm.com/docs/gitrevisions
[infoc]: /help?cmd=info
[infow]: /help?cmd=/info
[ocomp]: https://www.bigocheatsheet.com/
[tlc]:   /help?cmd=timeline
[tlw]:   /help?cmd=/timeline
[up]:    /help?cmd=update
[wdm]:   ./fossil-v-git.wiki#durable


## <a id="dhead"></a> Detached HEAD State

The SQL indexes in Fossil which we brought up above have a useful
side benefit: you cannot have a [detached HEAD state][gdh] in Fossil,
the source of untold pain and data loss in Git. It simply cannot be done
in Fossil, because the indexes always let us find our way back into the
hash tree.


## <a id="slcom"></a> Summary Line Convention in Commit Comments

The Git convention of a [length-limited summary line][lsl] at the start
of commit comments is not enforced or obeyed by default in Fossil.
However, there is a setting under Admin → Timeline → “Truncate comment
at first blank line (Git-style)†to change this for `/timeline`
displays.  Alternately, you could enable the “Allow block-markup in
timeline†setting under Admin → Timeline, then apply [local skin
customizations][cskin] to put that first comment in bold or whatever
suits.

Because this isn’t a typical Fossil convention, you’re likely to find
other odd differences between it and Git-based infrastructure.  For
instance, Vim doesn’t ship with syntax support for Fossil commit
messages if you set `EDITOR=vim` in your shell environment, so you won’t
get over-limit highlighting for first-line text beyond the 50th
character and such, because it doesn’t recognize Fossil commit messages
and apply similar rules as to Git commit messages.

[cskin]: ./customskin.md
[lsl]:   https://chris.beams.io/posts/git-commit/#limit-50


<a id="autocommit"></a>
## Fossil Never Auto-Commits

There are several features in Git besides its `commit` command that
produce a new commit to the repository, and by default, they do it
without prompting or even asking for a commit message. These include
Git’s [`rebase`](#rebase), `merge`, and [`cherrypick`](#cpickrev)
commands, plus the [commit splitting](#comsplit) sub-feature
“`git commit -p`â€.

Fossil never does this, on firm philosophical grounds: we wish to be
able to test that each potentially repository-changing command does not
break anything _before_ freezing it immutably into the [Merkle
tree](./blockchain.md). Where Fossil has equivalent commands, they
modify the checkout tree alone, requiring a separate `commit` command
afterward, withheld until the user has satisfied themselves that the
command’s result is correct.

We believe this is the main reason Git lacks an [autosync](#autosync)
feature: making push a manual step gives the user a chance to rewrite
history after triggering one of these autocommits locally, should the
automatic commit fail to work out as expected.  Fossil chooses the
inverse path under the philosophy that commits are *commitments,* not
something you’re allowed to go back and rewrite later.

This is also why there is no automatic commit message writing feature in
Fossil, as in these autocommit-triggering Git commands. The user is
meant to write the commit message by hand after they are sure it’s
correct, in clear-headed retrospective fashion.  Having the tool do it
prospectively before one can test the result is simply backwards.


<a id="staging"></a>
## There Is No Staging Area

Fossil omits the "Git index" or "staging area" concept.  When you
type "`fossil commit`" _all_ changes in your check-out are committed,
by default.  There is no need for the "-a" option as with Git.

If you only want to commit _some_ of the changes, list the names
of the files or directories you want to commit as arguments, like this:

    fossil commit src/feature.c doc/feature.md examples/feature

Note that the last element is a directory name, meaning “any changed
file under the `examples/feature` directory.â€


<a id="comsplit"></a>
## Commit Splitting

[Git’s commit splitting features][gcspl] rely on
other features of Git that Fossil purposefully lacks, as covered in the
prior two sections: [autocommit](#autocommit) and [the staging
area](#staging).

While there is no direct Fossil equivalent for
`git add -p`, `git commit -p`, or `git rebase -i`, you can get the same
effect by converting an uncommitted change set to a patch and then
running it through [Patchouli].

Rather than use `fossil diff -i` to produce such a patch, a safer and
more idiomatic method would be:

    fossil stash save -m 'my big ball-o-hackage'
    fossil stash diff > my-changes.patch

That stores your changes in the stash, then lets you operate on a copy
of that patch. Each time you re-run the second command, it will take the
current state of the working directory into account to produce a
potentially different patch, likely smaller because it leaves out patch
hunks already applied.

In this way, the combination of working tree and stash replaces the need
for Git’s index feature.

We believe we know how to do commit splitting in a way compatible with
the Fossil philosophy, without following Git’s ill-considered design
leads. It amounts to automating the above process through an interactive
variant of [`fossil stash apply`][stash], as currently prototyped in the
third-party tool [`fnc`][fnc] and [its interactive `stash`
command][fncsta]. We merely await someone’s [contribution][ctrb] of this
feature into Fossil proper.

[ctrb]:      https://fossil-scm.org/fossil/doc/trunk/www/contribute.wiki
[fnc]:       https://fnc.bsdbox.org/
[fncsta]:    https://fnc.bsdbox.org/uv/doc/fnc.1.html#stash
[gcspl]:     https://git-scm.com/docs/git-rebase#_splitting_commits
[Patchouli]: https://pypi.org/project/patchouli/


<a id="bneed"></a>
## Create Branches at Point of Need, Rather Than Ahead of Need

Fossil prefers that you create new branches as part of the first commit
on that branch:

    fossil commit --branch my-branch

If that commit is successful, your local check-out directory is then
switched to the tip of that branch, so subsequent commits don’t need the
“`--branch`†option. You simply say `fossil commit` again to continue
adding commits to the tip of that branch.

To switch back to the parent branch, say something like:

    fossil update trunk

(This is approximately equivalent to `git checkout master`.)

Fossil does also support the Git style, creating the branch ahead of
need:

    fossil branch new my-branch
    fossil up my-branch
    ...work on first commit...
    fossil commit

This is more verbose, giving the same overall effect though the initial
actions are inverted: create a new branch for the first commit, switch
the check-out directory to that branch, and make that first commit. As
above, subsequent commits are descendants of that initial branch commit.
We think you’ll agree that creating a branch as part of the initial
commit is simpler.

Fossil also allows you to move a check-in to a different branch
*after* you commit it, using the "`fossil amend`" command.
For example:

    fossil amend current --branch my-branch

This works by inserting a tag into the repository that causes the web UI
to relabel commits from that point forward with the new name. Like Git,
Fossil’s fundamental data structure is the interlinked DAG of commit
hashes; branch names are supplemental data for making it easier for the
humans to understand this DAG, so this command does not change the core
history of the project, only annotate it for better display to the
humans.

(The version string “current†is one of the [special check-in names][scin] in Fossil. See
that document for the many other names you can give to “`amend`â€, or
indeed to any other Fossil command documented to accept a `VERSION` or
`NAME` string.)

[scin]: ./checkin_names.wiki


<a id="syncall"></a>
## Sync Is All-or-Nothing

Fossil does not support the concept of syncing, pushing, or pulling
individual branches.  When you sync/push/pull in Fossil, it
processes all artifacts in its hash tree:
branches, tags, wiki articles, tickets, forum posts, technotes…
This is [not quite “everything,†full stop][bu], but it’s close.
[Fossil is an AP-mode system][capt], which in this case means it works
*very hard* to ensure that all repos are as close to identical as it can
make them under this eventually-consistent design philosophy.

Branch *names* sync automatically in Fossil, not just the
content of those branches. That means this common Git command:

    git push origin master

…is simply this in Fossil:

    fossil push

Fossil doesn’t need to be told what to push or where to push it: it just
keeps using the same remote server URL you gave it last
until you [tell it to do something different][rem]. It pushes all
branches, not just one named local branch.

[capt]: ./cap-theorem.md
[rem]:  /help?cmd=remote


<a id="autosync"></a>
## Autosync

Fossil’s [autosync][wflow] feature, normally enabled, has no
equivalent in Git. If you want Fossil to behave like Git, you can turn
it off:

    fossil set autosync 0

Let’s say that you have a typical server-and-workstations model with two
working clones on different machines, that you have disabled autosync,
and that this common sequence then occurs:

1.  Alice commits to her local clone and *separately* pushes the change
    up to Condor — their central server — in typical Git fashion.
2.  Bob does the same.
3.  Alice brings Bob’s changes down from Condor with “`fossil pull`,†sees
    what he did to their shared working branch, and becomes most wrathful.
    (Tsk, tsk.)

We’ll get to what you do about this situation [below](#reset), but for
now let us focus on the fact that disabling autosync makes it easier for
[forks] to occur in the development history. If all three machines had
been online and syncing at the time the sequence above began, Bob would
have been warned in step 2 that committing to the central repo would
create a fork and would be invited to fix it before committing.
Likewise, it would allow Fossil to warn Alice about the new
tip-of-branch commit the next time she triggers an implicit autosync at
step 3, giving her a chance to bring Bob’s changes down in a
non-conflicting manner, allowing work to proceed with minimal fuss.

Fossil, being a distributed version control system, cannot guarantee
that sequence of events. Because it allows Alice’s work to proceed
asynchronously, it gives her the chance to create *another* inadvertent
fork before she can trigger an autosync. This is not a serious problem;
Fossil resolves it the same way as with Bob, by inviting her to fix this
second fork in the same manner as it did with Bob. It gets both parties
back onto a single track as expeditiously as possible by moving the
synchronization point out of the expensive human-time workflow and into
the software system, where it’s cheapest to resolve.

Autosync provides Fossil with most of the advantages of a centralized
version control system while retaining the advantages of distributed
version control:

1.  Your work stays synced up with your coworkers’ efforts as long as your
    machine can connect to the remote repository. At need, you can go
    off-network and continue work atop the last version you synced with
    the remote.

2.  You get implicit off-machine backup of your commits. Unlike
    centralized version control, though, you can still work while
    disconnected; your changes will sync up with the remote once you get
    back online.

3.  Because there is [little distinction][bu] between the clones in the Fossil
    model — unlike in Git, where clones often quickly diverge from each
    other, quite possibly on purpose — the backup advantage applies in inverse
    as well: if the remote server falls over dead, one of those with a
    clone of that repository can stand it back up, and everyone can get
    back to work simply by re-pointing their local repo at the new
    remote.  If the failed remote comes back later, it can sync with the
    new central version, then perhaps take over as the primary source of
    truth once again.

[bu]:    ./backup.md
[forks]: ./branching.wiki
[setup]: ./caps/admin-v-setup.md#apsu
[wflow]: ./concepts.wiki#workflow


<a id="reset"></a>
## Resetting the Repository

Extending from [the prior item](#syncall), you may correctly infer that
“[delete the project and download a fresh copy][x1597]†has no part in
the Fossil Way. Ideally, you should never find yourself forced into
desperate measures like this:(^Parsing the output of `fossil status` is
usually a mistake since it relies on a potentially unstable interface.
We make no guarantee that there will always be a line beginning with
“`repo`†and that it will be separated from the repository’s file name
by a colon. The simplified example above is also liable to become
confused by whitespace in file names.)


```
$ repo=$(fossil status | grep ^repo | cut -f2 -d:)
$ url=$(fossil remote)
$ fossil close             # Stop here and think if it warns you!
$ mv $repo ${repo}.old
$ fossil clone $url $repo
$ fossil open --force $repo
```

What, then, should you as a Git transplant do instead when you find
yourself reaching for “`git reset`�

Since the correct answer to that depends on why you think it’s a good
solution to your immediate problem, we’ll take our motivating scenario
from the problem setup above, where we discussed Fossil’s [autosync]
feature.  Let us further say Alice’s pique results from a belief that
Bob’s commit is objectively wrong-headed and should be expunged
henceforth. Since Fossil goes out of its way to ensure that [commits are
durable][wdm], it should be no further surprise that there is no easier
method to reset Bob’s clone in favor of Alice’s than the above sequence
in Fossil’s command set. Except in extreme situations, we believe that
sort of thing is unnecessary.

Instead, Bob can say something like this:

```
fossil amend --branch MISTAKE --hide --close -m "mea culpa" tip
fossil up trunk
fossil push
```

Unlike in Git, the “`amend`†command doesn’t modify prior committed
artifacts. Bob’s first command doesn’t delete anything, merely tells
Fossil to hide his mistake from timeline views by inserting a few new
records into the local repository to change how the client interprets
the data it finds there henceforth.(^One to change the tag marking this
commit’s branch name to “`MISTAKE`,†one to mark that branch as hidden,
and one to close it to further commits.)

Bob’s second command switches his working directory back to the prior
commit on that branch. We’re presuming it was “`trunk`†for the sake of
the example, but it works for any parent branch name. The command works
because the name “`trunk`†now means something different to Fossil by
virtue of the first command.

Bob’s third command pushes the changes up to the central machine to
inform everyone else of his amendment.(^Amendments don’t autosync in
Fossil because they don’t change any previous commits, allowing the
other clones to continue working safely with their existing commit
hashes.)

In this scheme, Alice then needs to say “`fossil update trunk`†in order
to return her check-out’s parent commit to the previous version lest her
next attempted commit land atop this mistake branch. The fact that Bob
marked the branch as closed will prevent that from going through, cluing
Alice into what she needs to do to remedy the situation, but that merely
shows why it’s a better workflow if Alice makes the amendment herself:

```
fossil amend --branch MISTAKE --hide --close \
  -m "shunt Bob’s erroneous commit off" tip
fossil up trunk
fossil push
```

Then she can fire off an email listing Bob’s assorted failings and go
about her work. This asynchronous workflow solves the problem without
requiring explicit coordination with Bob. When he gets his email, he can
then say “`fossil up trunk`†himself, which by default will trigger an
autosync, pulling down Alice’s amendments and getting him back onto her
development track.

Remember that [branch names need not be unique](#btnames) in Fossil. You
are free to reuse this “`MISTAKE`†branch name as often as you need to.

[autosync]: #autosync
[x1597]:    https://xkcd.com/1597/


<a id="trunk"></a>
## The Main Branch Is Called "`trunk`"

In Fossil, the default name for the main branch
is "`trunk`".  The "`trunk`" branch in Fossil corresponds to the
"`master`" branch in stock Git or to [the “`main`†branch in GitHub][mbgh].

Because the `fossil git export` command has to work with both stock Git
and with GitHub, Fossil uses Git’s traditional default rather than
GitHub’s new default: your Fossil repo’s “trunk†branch becomes “masterâ€
when [mirroring to GitHub][mirgh] unless you give the `--mainbranch`
option.

We do not know what happens on subsequent exports if you later rename
this branch on the GitHub side.

[mbgh]:  https://github.com/github/renaming
[mirgh]: ./mirrortogithub.md


<a id="unmanaged"></a>
## Status Does Not Show Unmanaged Files

The "`fossil status`" command shows you what files in your check-out have
been edited and scheduled for adding or removing at the next commit.
But unlike "`git status`", the "`fossil status`" command does not warn
you about unmanaged files in your local check-out.  There is a separate
"`fossil extras`" command for that.


<a id="rebase"></a>
## There Is No Rebase

Fossil does not support rebase, [on purpose][3].

This is a deliberate design decision that the Fossil community has
thought about carefully and discussed many times, resulting in the
linked document. If you are fond of rebase, you should read it carefully
before expressing your views: it not only answers many of the common
arguments in favor of rebase known at the time the document’s first
draft was written, it’s been revised multiple times to address less
common objections as well. Chances are not good that you are going to
come up with a new objection that we haven’t already considered and
addressed there.

There is only one sub-feature of `git rebase` that is philosophically
compatible with Fossil yet which currently has no functional equivalent.
We [covered this and the workaround for its lack](#comsplit) above.

[3]: ./rebaseharm.md


<a id="cdiff"></a>
## Colorized Diffs

When you run `git diff` on an ANSI X3.64 capable terminal, it uses color
to distinguish insertions, deletions, and replacements, but as of this
writing, `fossil diff` produces traditional uncolored [unified diff
format][udiff] output, suitable for producing a [patch file][pfile].

There are [many methods](./colordiff.md) for solving this.
Viewed this way, Fossil doesn’t lack colorized diffs, it simply has
*one* method where they *aren’t* colorized.

[pfile]: https://en.wikipedia.org/wiki/Patch_(Unix)
[udiff]: https://en.wikipedia.org/wiki/Diff#Unified_format


## <a id="show"></a> Showing Information About Commits

While there is no direct equivalent to Git’s “`show`†command, similar
functionality is present in Fossil under other commands:


#### <a id="patch"></a> Show a Patch for a Commit

    git show -p COMMIT_ID

…gives much the same output as

    fossil diff --checkin COMMIT_ID

…only without the patch email header. Git comes out of the [LKML] world,
where emailing a patch is a normal thing to do. Fossil is [designed for
cohesive teams][devorg] where drive-by patches are rarer.

You can use any of [Fossil’s special check-in names][scin] in place of
the `COMMIT_ID` in this and later examples. Fossil docs usually say
“`VERSION`†or “`NAME`†where this is allowed, since the version string
or name might not refer to a commit ID, but instead to a forum post, a
wiki document, etc. For instance, the following command answers the question “What did
I just commit?â€

    fossil diff --checkin tip

…or equivalently using a different symbolic commit name:

    fossil diff --from prev

[devorg]: ./fossil-v-git.wiki#devorg
[LKML]:   https://lkml.org/


#### <a id="cmsg"></a> Show a Specific Commit Message

    git show -s COMMIT_ID


…is

    fossil time -n 1 COMMIT_ID

…or with a shorter, more obvious command, though with more verbose output:

    fossil info COMMIT_ID

The `fossil info` command isn’t otherwise a good equivalent to
`git show`; it just overlaps its functionality in some areas. Much of
what’s missing is present in the corresponding [`/info` web
view][infow], though.


#### <a id="dstat"></a> Diff Statistics

Fossil’s closest internal equivalent to commands like
`git show --stat` is:

    fossil diff -i --from 2020-04-01 --numstat

The `--numstat` output is a bit cryptic, so we recommend delegating
this task to [the widely-available `diffstat` tool][dst], which gives
a histogram in its default output mode rather than bare integers:

    fossil diff -i -v --from 2020-04-01 | diffstat

We gave the `-i` flag in both cases to force Fossil to use its internal
diff implementation, bypassing [your local `diff-command` setting][dcset]
since the `--numstat` option has no effect when you have an external diff
command set.

If you leave off the `-v` flag in the second example, the `diffstat`
output won’t include info about any newly-added files.

[dcset]: https://fossil-scm.org/home/help?cmd=diff-command
[dst]:   https://invisible-island.net/diffstat/diffstat.html


<a id="btnames"></a>
## Branch and Tag Names

Fossil has no special restrictions on the names of tags and branches,
though you might want to keep [Git's tag and branch name restrictions][gcrf]
in mind if you plan on [mirroring your Fossil repository to GitHub][mirgh].

Fossil does not require tag and branch names to be unique.  It is
common, for example, to put a “`release`†tag on every release for a
Fossil-hosted project. This does not create a conflict in Fossil, since
Fossil resolves the ambiguity in a predictable way: the newest match
wins. Therefore, “`fossil up release`†always gets you the current
release in a project that uses this tagging convention.

[The `fossil git export` command][fge] squashes repeated tags down to a
single instance to avoid confusing Git, exporting only the newest tag,
emulating Fossil’s own ambiguity resolution rule as best it can within
Git’s limitations.

[fge]:  /help?cmd=git
[gcrf]: https://git-scm.com/docs/git-check-ref-format




<a id="cpickrev"></a>
## Cherry-Picking and Reverting Commits

Git’s separate "`git cherry-pick`" and “`git revert`†commands are
options to the [`fossil merge` command][merge]: `--cherrypick` and
`--backout`, respectively. We view this as sensible, since these are
both merge operations, and the two actions differ only in direction.

Unlike in Git, the Fossil file format remembers cherrypicks and backouts
and can later show them as dashed lines on the graphical timeline.

[merge]: /help?cmd=merge



<a id="mvrm"></a>
## File Moves and Renames Are Soft by Default

The "[`fossil mv`][mv]" and "[`fossil rm`][rm]" commands work like they
do in CVS in that they schedule the changes for the next commit by
default: they do not actually rename or delete the files in your
check-out.

If you don’t like that default, you can change it globally:

    fossil setting --global mv-rm-files 1

Now these commands behave like in Git in any Fossil repository where
this setting hasn’t been overridden locally.

If you want to keep Fossil’s soft `mv/rm` behavior most of the time, you
can cast it away on a per-command basis:

    fossil mv --hard old-name new-name

[mv]: /help?cmd=mv
[rm]: /help?cmd=rm


----


## <a id="cvdate" name="cs1"></a> Case Study 1: Checking Out a Version by Date

Let’s get into something a bit more complicated: a case study showing
how the concepts lined out above cause Fossil to materially differ in
day-to-day operation from Git.

Why would you want to check out a version of a project by date?  Perhaps
your customer gave you a vague bug report referencing only a
date rather than a version. Or, you may be poking semi-randomly through
history to find a “good†version to anchor the start point of a
[`fossil bisect`][fbis] operation.

My search engine’s first result for “git checkout by date†is [this
highly-upvoted accepted Stack Overflow answer][gcod]. The first command
it gives is based on Git’s [`rev-parse` feature][grp]:

    git checkout master@{2020-03-17}

There are a number of weaknesses in this command. From least to most
critical:

1.  It’s a bit cryptic. Leave off the refname or punctuation, and it
    means something else. You cannot simplify the cryptic incantation in
    the typical use case.

2.  A date string in Git without a time will be interpreted as
    “[at the local wall clock time on the given date][gapxd],†so the
    command means something different from one second to the next! This
    can be a serious problem if there are multiple commits on that date, because
    the command will give different results depending on the time of
    day you run it.

3.  It gives misleading output if there is no close match for the date
    in the local [reflog]. It starts out empty after a fresh clone, and
    while it does build up as you use that clone, Git [automatically
    prunes][gle] the reflog to 90 days of history by default. This means
    the command above can give different results from one machine to the
    next, or even from one day to the next on the same clone.

    The command won’t fail outright if the reflog can’t resolve the
    given date: it simply gives the closest commit it can come up with,
    even if it’s months or years out from your target! Sometimes it
    gives a warning about the reflog not going back far enough to give a
    useful result, and sometimes it doesn’t. If you’re on a fresh clone,
    you are likely to get the “tip†commit’s revision ID no matter what
    date value you give.

    Git tries its best, but because it’s working from a purgeable and
    possibly-stale local cache, you cannot trust its results.

Consequently, we cannot recommend this command at all. It’s unreliable even in the
best case.

That same Stack Overflow answer therefore goes on to recommend an
entirely different command:

    git checkout $(git rev-list -n 1 --first-parent --before="2020-03-17" master)

We believe you get such answers to Git help requests in part
because of its lack of an always-up-to-date [index into its log](#log) and in
part because of its “small tools loosely joined†design philosophy. This
sort of command is therefore composed piece by piece:

<p style="text-align:center">◆  ◆  ◆</p>

“Oh, I know, I’ll search the rev-list, which outputs commit IDs by
parsing the log backwards from `HEAD`! Easy!â€

    git rev-list --before=2020-03-17

“Blast! Forgot the commit ID!â€

    git rev-list --before=2020-03-17 master

“Double blast! It just spammed my terminal with revision IDs! I need to
limit it to the single closest match:

    git rev-list -n 1 --before=2020-03-17 master

“Okay, it gives me a single revision ID now, but is it what I’m after?
Let’s take a look…â€

    git show $(git rev-list -n 1 --before=2020-03-17 master)

“Oops, that’s giving me a merge commit, not what I want.
Off to search the web… Okay, it says I need to give either the
`--first-parent` or `--no-merges` flag to show only regular commits,
not merge-commits. Let’s try the first one:â€

    git show $(git rev-list -n 1 --first-parent --before=2020-03-17 master)

“Better. Let’s check it out:â€

    git checkout $(git rev-list -n 1 --first-parent --before=2020-03-17 master)

“Success, I guess?â€

<p style="text-align:center">◆  ◆  ◆</p>

This vignette is meant to explain some of Git’s popularity: it rewards
the sort of people who enjoy puzzles, many of whom are software
developers and thus need a tool like Git. Too bad if you’re just a
normal user.

And too bad if you’re a Windows user who doesn’t want to use [Git
Bash][gbash], since neither of the stock OS command shells have a
command interpolation feature needed to run that horrid command.

This alternative command still has weakness #2 above: if you run the
second `git show` command above on [Git’s own repository][gitgh], your
results may vary because there were four non-merge commits to Git on the
17th of March, 2020.

You may be asking with an exasperated huff, “What is your *point*, man?â€
The point is that the equivalent in Fossil is simply:

    fossil up 2020-03-17

…which will *always* give the commit closest to midnight UTC on the 17th
of March, 2020, no matter whether you do it on a fresh clone or a stale
one.  The answer won’t shift about from one clone to the next or from
one local time of day to the next. We owe this reliability and stability
to three Fossil design choices:

*  Parse timestamps from all commits on clone into a local commit index,
   then maintain that index through subsequent commits and syncs.

*  Use an indexed SQL `ORDER BY` query to match timestamps to commit
   IDs for a fast and consistent result.

*  Round incomplete timestamp strings up using [rules][frud] consistent across
   computers and local time of day.

[frud]:   https://fossil-scm.org/home/file/src/name.c?ci=d2a59b03727bc3&ln=122-141
[gbash]:  https://appuals.com/what-is-git-bash/
[gapxd]:  https://github.com/git/git/blob/7f7ebe054a/date.c#L1298-L1300
[gcod]:   https://stackoverflow.com/a/6990682/142454
[gdh]:    https://www.git-tower.com/learn/git/faq/detached-head-when-checkout-commit/
[gitgh]:  https://github.com/git/git/
[gle]:    https://git-scm.com/docs/git-reflog#_options_for_expire
[gmc]:    https://github.com/git/git/commit/67b0a24910fbb23c8f5e7a2c61c339818bc68296
[grp]:    https://git-scm.com/docs/git-rev-parse
[reflog]: https://git-scm.com/docs/git-reflog

----

## <a id="morigin" name="cs2"></a> Case Study 2: Multiple "origin" Servers

Now let us consider a common use case at the time of this writing — during the
COVID-19 pandemic — where you’re working from home a lot, going into the
office one part-day a week only to do things that have to be done
on-site at the office.  Let us also say you have no remote
access back into the work LAN, such as because your site IT is paranoid
about security. You may still want off-machine backups of your commits
while working from home,
so you need the ability to quickly switch between the “home†and
“work†remote repositories, with your laptop acting as a kind of
[sneakernet][sn] link between the big development server at the office
and your family’s home NAS.

#### Git Method

We first need to clone the work repo down to our laptop, so we can work on it
at home:

    git clone https://dev-server.example.com/repo
    cd repo
    git remote rename origin work

The last command is optional, strictly speaking. We could continue to
use Git’s default name for the work repo’s origin — sensibly enough
called “`origin`†— but it makes later commands harder to understand, so
we rename it here. This will also make the parallel with Fossil easier
to draw.

The first time we go home after this, we have to reverse-clone the work
repo up to the NAS:

    ssh my-nas.local 'git init --bare /SHARES/dayjob/repo.git'
    git push --all ssh://my-nas.local//SHARES/dayjob/repo.git

Realize that this is carefully optimized down to these two long
commands. In practice, we’d expect a user typing these commands by hand from memory
to need to give four or more commands here instead.
Packing the “`git init`†call into the “`ssh`†call is something more
often done in scripts and documentation examples than done interactively,
which then necessitates a third command before the push, “`exit`â€.
There’s also a good chance that you’ll forget the need for the `--bare`
option here to avoid a fatal complaint from Git that the laptop can’t
push into a non-empty repo. If you fall into this trap, among the many
that Git lays for newbies, you have to nuke the incorrectly initted
repo, search the web or Git man pages to find out about `--bare`, and try again.

Having navigated that little minefield,
we can tell Git that there is a second origin, a “home†repo in
addition to the named “work†repo we set up earlier:

    git remote add home ssh://my-nas.local//SHARES/dayjob/repo.git
    git config master.remote home

We don’t have to push or pull because the remote repo is a complete
clone of the repo on the laptop at this point, so we can just get to
work now, committing along the way to get our work safely off-machine
and onto our home NAS, like so:

    git add
    git commit
    git push

We didn’t need to give a remote name on the push because we told it the
new upstream is the home NAS earlier.

Now Friday comes along, and one of your office-mates needs a feature
you’re working on. You agree to come into the office later that
afternoon to sync up via the dev server:

    git push work master      # send your changes from home up
    git pull work master      # get your coworkers’ changes

Alternately, we could add “`--set-upstream/-u work`†to the first
command if we were coming into work long enough to do several Git-based things, not just pop in and sync.
That would allow the second to be just “`git pull`â€, but the cost is
that when returning home, you’d have to manually reset the upstream
again.

This example also shows a consequence of that fact that
[Git doesn’t sync branch names](#syncall): you have to keep repeating
yourself like an obsequious supplicant: “Master, master.†Didn’t we
invent computers to serve humans, rather than the other way around?


#### Fossil Method

Now we’re going to do the same thing using Fossil, with
the commands arranged in blocks corresponding to those above for comparison.

We start the same way, cloning the work repo down to the laptop:

    fossil clone https://dev-server.example.com/repo
    cd repo
    fossil remote add work https://dev-server.example.com/repo

We’ve chosen the new “`fossil clone URI`†syntax rather than separate
`clone` and `open` commands to make the parallel with Git clearer. [See
above](#mwd) for more on that topic.

Our [`remote` command][rem] is longer than the Git equivalent because
Fossil currently has no short command
to rename an existing remote. Worse, unlike with Git, we can’t just keep
using the default remote name because Fossil uses that slot in its
configuration database to store the *current* remote name, so on
switching from work to home, the home URL will overwrite the work URL if
we don’t give it an explicit name first.

Although the Fossil commands are longer, so far, keep it in perspective:
they’re one-time setup costs,
easily amortized to insignificance by the shorter day-to-day commands
below.

On first beginning to work from home, we reverse-clone the Fossil repo
up to the NAS:

    rsync repo.fossil my-nas.local:/SHARES/dayjob/

Now we’re beginning to see the advantage of Fossil’s simpler model,
relative to the tricky “`git init && git push`†sequence above.
Fossil’s alternative is almost impossible to get
wrong: copy this to that.  *Done.*

We’re relying on the `rsync` feature that creates up to one level of
missing directory (here, `dayjob/`) on the remote. If you know in
advance that the remote directory already exists, you could use a
slightly shorter `scp` command instead. Even with the extra 2 characters
in the `rsync` form, it’s much shorter because a Fossil repository is a
single SQLite database file, not a tree containing a pile of assorted
files.  Because of this, it works reliably without any of [the caveats
inherent in using `rsync` to clone a Git repo][grsync].

Now we set up the second remote, which is again simpler in the Fossil
case:

    fossil remote add home ssh://my-nas.local//SHARES/dayjob/repo.fossil
    fossil remote home

The first command is nearly identical to the Git version, but the second
is considerably simpler. And to be fair, you won’t find the
“`git config`†command above in all Git tutorials. The more common
alternative we found with web searches is even longer:
“`git push --set-upstream home master`â€.

Where Fossil really wins is in the next step, making the initial commit
from home:

    fossil ci

It’s one short command for Fossil instead of three for Git — or two if
you abbreviate it as “`git commit -a && git push`†— because of Fossil’s
[autosync] feature and deliberate omission of a
[staging feature](#staging).

The “Friday afternoon sync-up†case is simpler, too:

    fossil remote work
    fossil sync

Back at home, it’s simpler still: we may be able to do away with the second command,
saying just “`fossil remote home`†because the sync will happen as part
of the next commit, thanks once again to Fossil’s autosync feature. If
the working branch now has commits from other developers after syncing
with the central repository, though, you’ll want to say “`fossil up`†to
avoid creating an inadvertent fork in the branch.

(Which is easy to fix if it occurs: `fossil merge` without arguments
means “merge open tips on the current branch.â€)

[grsync]: https://stackoverflow.com/q/1398018/142454
[qs]:     ./quickstart.wiki
[shwmd]:  ./fossil-v-git.wiki#checkouts
[sn]:     https://en.wikipedia.org/wiki/Sneakernet
Added www/globs.md.










































































































































































































































































































































































































































































































































































































































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# File Name Glob Patterns

A [glob pattern][glob] is a text expression that matches one or more
file names using wildcards familiar to most users of a command line.
For example, `*` is a glob that matches any name at all, and
`Readme.txt` is a glob that matches exactly one file. For purposes of
Fossil's globs, a complete path name is just a string,
and the globs do not apply any special meaning to the directory part
of the name. Thus, the glob `*` matches any name, including any
directory prefix, and `*/*` matches a name with _one or more_
directory components.

A glob should not be confused with a [regular expression][regexp] (RE)
even though they use some of the same special characters for similar
purposes. [They are not fully compatible][greinc] pattern
matching languages. Fossil uses globs when matching file names with the
settings described in this document, not REs.

[glob]:   https://en.wikipedia.org/wiki/Glob_(programming)
[greinc]: https://unix.stackexchange.com/a/57958/138
[regexp]: https://en.wikipedia.org/wiki/Regular_expression

[Fossil’s `*-glob` settings](#settings) hold one or more patterns to cause Fossil to
give matching named files special treatment.  Glob patterns are also
accepted in options to certain commands and as query parameters to
certain Fossil UI web pages. For consistency, settings such as
`empty-dirs` are parsed as a glob even though they aren’t then *applied*
as a glob since it allows [the same syntax rules](#syntax) to apply.

Where Fossil also accepts globs in commands, this handling may interact
with your OS’s command shell or its C runtime system, because they may
have their own glob pattern handling. We will detail such interactions
below.


## <a id="syntax"></a>Syntax

Where Fossil accepts glob patterns, it will usually accept a *list* of
individual patterns separated from the others by whitespace or commas.

The parser allows whitespace and commas in a pattern by quoting _the
entire pattern_ with either single or double quotation marks. Internal
quotation marks are treated literally. Moreover, a pattern that begins
with a quote mark ends when the first instance of the same mark occurs,
_not_ at a whitespace or comma. Thus, this:

    "foo bar"qux

…constitutes _two_ patterns rather than one with an embedded space, in
contravention of normal shell quoting rules.

A list matches a file when any pattern in that list matches.

A pattern must consume and
match the *entire* file name to succeed. Partial matches are failed matches.

Most characters in a glob pattern consume a single character of the file
name and must match it exactly. For instance, “a†in a glob simply
matches the letter “a†in the file name unless it is inside a special
character sequence.

Other characters have special meaning, and they may include otherwise
normal characters to give them special meaning:

:Pattern |:Effect
---------------------------------------------------------------------
`*`      | Matches any sequence of zero or more characters
`?`      | Matches exactly one character
`[...]`  | Matches one character from the enclosed list of characters
`[^...]` | Matches one character *not* in the enclosed list

Note that unlike [POSIX globs][pg], these special characters and
sequences are allowed to match `/` directory separators as well as the
initial `.` in the name of a hidden file or directory. This is because
Fossil file names are stored as complete path names. The distinction
between file name and directory name is “underneath†Fossil in this sense.

[pg]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_13

The bracket expressions above require some additional explanation:

 *  A range of characters may be specified with `-`, so `[a-f]` matches
    exactly the same characters as `[abcdef]`. Ranges reflect Unicode
    code points without any locale-specific collation sequence.
    Therefore, this particular sequence never matches the Unicode
    pre-composed character `é`, for example. (U+00E9)

 *  This dependence on character/code point ordering may have other
    effects to surprise you. For example, the glob `[A-z]` not only
    matches upper and lowercase ASCII letters, it also matches several
    punctuation characters placed between `Z` and `a` in both ASCII and
    Unicode: `[`, `\`, `]`, `^`, `_`, and <tt>\`</tt>.

 *  You may include a literal `-` in a list by placing it last, just
    before the `]`.

 *  You may include a literal `]` in a list by making the first
    character after the `[` or `[^`. At any other place, `]` ends the list.

 *  You may include a literal `^` in a list by placing it anywhere
    except after the opening `[`.

 *  Beware that a range must be specified from low value to high
    value: `[z-a]` does not match any character at all, preventing the
    entire glob from matching.

Some examples of character lists:

:Pattern |:Effect
---------------------------------------------------------------------
`[a-d]`  | Matches any one of `a`, `b`, `c`, or `d` but not `ä`
`[^a-d]` | Matches exactly one character other than `a`, `b`, `c`, or `d`
`[0-9a-fA-F]` | Matches exactly one hexadecimal digit
`[a-]`   | Matches either `a` or `-`
`[][]`   | Matches either `]` or `[`
`[^]]`   | Matches exactly one character other than `]`
`[]^]`   | Matches either `]` or `^`
`[^-]`   | Matches exactly one character other than `-`

White space means the specific ASCII characters TAB, LF, VT, FF, CR,
and SPACE.  Note that this does not include any of the many additional
spacing characters available in Unicode such as
U+00A0, NO-BREAK SPACE.

Because both LF and CR are white space and leading and trailing spaces
are stripped from each glob in a list, a list of globs may be broken
into lines between globs when the list is stored in a file, as for a
versioned setting.

Note that 'single quotes' and "double quotes" are the ASCII straight
quote characters, not any of the other quotation marks provided in
Unicode and specifically not the "curly" quotes preferred by
typesetters and word processors.


## File Names to Match

Before it is compared to a glob pattern, each file name is transformed
to a canonical form:

  *  all directory separators are changed to `/`
  *  redundant slashes are removed
  *  all `.` path components are removed
  *  all `..` path components are resolved

(There are additional details we are ignoring here, but they cover rare
edge cases and follow the principle of least surprise.)

The glob must match the *entire* canonical file name to be considered a
match.

The goal is to have a name that is the simplest possible for each
particular file, and that will be the same regardless of the platform
you run Fossil on. This is important when you have a repository cloned
from multiple platforms and have globs in versioned settings: you want
those settings to be interpreted the same way everywhere.

Beware, however, that all glob matching in Fossil is case sensitive
regardless of host platform and file system. This will not be a surprise
on POSIX platforms where file names are usually treated case
sensitively. However, most Windows file systems are case preserving but
case insensitive. That is, on Windows, the names `ReadMe` and `README`
are usually names of the same file. The same is true in other cases,
such as by default on macOS file systems and in the file system drivers
for Windows file systems running on non-Windows systems. (e.g. exfat on
Linux.) Therefore, write your Fossil glob patterns to match the name of
the file as checked into the repository.

Some example cases:

:Pattern     |:Effect
--------------------------------------------------------------------------------
`README`     | Matches only a file named `README` in the root of the tree. It does not match a file named `src/README` because it does not include any characters that consume (and match) the `src/` part.
`*/README`   | Matches `src/README`. Unlike Unix file globs, it also matches `src/library/README`. However it does not match the file `README` in the root of the tree.
`*README`    | Matches `src/README` as well as the file `README` in the root of the tree as well as `foo/bar/README` or any other file named `README` in the tree. However, it also matches `A-DIFFERENT-README` and `src/DO-NOT-README`, or any other file whose name ends with `README`.
`src/README` | Matches `src\README` on Windows because all directory separators are rewritten as `/` in the canonical name before the glob is matched. This makes it much easier to write globs that work on both Unix and Windows.
`*.[ch]`     | Matches every C source or header file in the tree at the root or at any depth. Again, this is (deliberately) different from Unix file globs and Windows wild cards.


## Where Globs are Used

### <a id="settings"></a>Settings that are Globs

These settings are all lists of glob patterns:

:Setting        |:Description
--------------------------------------------------------------------------------
`binary-glob`   | Files that should be treated as binary files for committing and merging purposes
`clean-glob`    | Files that the [`clean`][] command will delete without prompting or allowing undo
`crlf-glob`     | Files in which it is okay to have `CR`, `CR`+`LF` or mixed line endings.  Set to "`*`" to disable CR+LF checking
`crnl-glob`     | Alias for the `crlf-glob` setting
`encoding-glob` | Files that the [`commit`][] command will ignore when issuing warnings about text files that may use another encoding than ASCII or UTF-8.  Set to "`*`" to disable encoding checking
`ignore-glob`   | Files that the [`add`][], [`addremove`][], [`clean`][], and [`extras`][] commands will ignore
`keep-glob`     | Files that the [`clean`][] command will keep

All may be [versioned, local, or global](settings.wiki). Use `fossil
settings` to manage local and global settings, or a file in the
repository's `.fossil-settings/` folder at the root of the tree named
for each for versioned setting.

Using versioned settings for these not only has the advantage that
they are tracked in the repository just like the rest of your project,
but you can more easily keep longer lists of more complicated glob
patterns than would be practical in either local or global settings.

The `ignore-glob` is an example of one setting that frequently grows
to be an elaborate list of files that should be ignored by most
commands. This is especially true when one (or more) IDEs are used in
a project because each IDE has its own ideas of how and where to cache
information that speeds up its browsing and building tasks but which
need not be preserved in your project's history.

Although the `empty-dirs` setting is not a list of glob patterns as
such, it is *parsed* that way for consistency among the settings,
allowing [the list parsing rules above](#syntax) to apply.


### <a id="commands"></a>Commands that Refer to Globs

Many of the commands that respect the settings containing globs have
options to override some or all of the settings. These options are
usually named to correspond to the setting they override, such as
`--ignore` to override the `ignore-glob` setting. These commands are:

 *  [`add`][]
 *  [`addremove`][]
 *  [`changes`][]
 *  [`clean`][]
 *  [`commit`][]
 *  [`extras`][]
 *  [`merge`][]
 *  [`settings`][]
 *  [`status`][]
 *  [`touch`][]
 *  [`unset`][]

The commands [`tarball`][] and [`zip`][] produce compressed archives of a
specific checkin. They may be further restricted by options that
specify glob patterns that name files to include or exclude rather
than archiving the entire checkin.

The commands [`http`][], [`cgi`][], [`server`][], and [`ui`][] that
implement or support with web servers provide a mechanism to name some
files to serve with static content where a list of glob patterns
specifies what content may be served.

[`add`]:       /help?cmd=add
[`addremove`]: /help?cmd=addremove
[`changes`]:   /help?cmd=changes
[`clean`]:     /help?cmd=clean
[`commit`]:    /help?cmd=commit
[`extras`]:    /help?cmd=extras
[`merge`]:     /help?cmd=merge
[`settings`]:  /help?cmd=settings
[`status`]:    /help?cmd=status
[`touch`]:     /help?cmd=touch
[`unset`]:     /help?cmd=unset

[`tarball`]:   /help?cmd=tarball
[`zip`]:       /help?cmd=zip

[`http`]:      /help?cmd=http
[`cgi`]:       /help?cmd=cgi
[`server`]:    /help?cmd=server
[`ui`]:        /help?cmd=ui


### Web Pages that Refer to Globs

The [`/timeline`][] page supports the query parameter `chng=GLOBLIST` that
names a list of glob patterns defining which files to focus the
timeline on. It also has the query parameters `t=TAG` and `r=TAG` that
names a tag to focus on, which can be configured with `ms=STYLE` to
use a glob pattern to match tag names instead of the default exact
match or a couple of other comparison styles.

The pages [`/tarball`][] and [`/zip`][] generate compressed archives
of a specific checkin. They may be further restricted by query
parameters that specify glob patterns that name files to include or
exclude rather than taking the entire checkin.

[`/timeline`]: /help?cmd=/timeline
[`/tarball`]:  /help?cmd=/tarball
[`/zip`]:      /help?cmd=/zip


## Platform Quirks

Fossil glob patterns are based on the glob pattern feature of POSIX
shells. Fossil glob patterns also have a quoting mechanism, discussed
[above](#syntax). Because other parts of your operating system may interpret glob
patterns and quotes separately from Fossil, it is often difficult to
give glob patterns correctly to Fossil on the command line. Quotes and
special characters in glob patterns are likely to be interpreted when
given as part of a `fossil` command, causing unexpected behavior.

These problems do not affect [versioned settings files](settings.wiki)
or Admin &rarr; Settings in Fossil UI. Consequently, it is better to
set long-term `*-glob` settings via these methods than to use `fossil
settings` commands.

That advice does not help you when you are giving one-off glob patterns
in `fossil` commands. The remainder of this section gives remedies and
workarounds for these problems.


### <a id="posix"></a>POSIX Systems

If you are using Fossil on a system with a POSIX-compatible shell
&mdash; Linux, macOS, the BSDs, Unix, Cygwin, WSL etc. &mdash; the shell
may expand the glob patterns before passing the result to the `fossil`
executable.

Sometimes this is exactly what you want.  Consider this command for
example:

    $ fossil add RE*

If you give that command in a directory containing `README.txt` and
`RELEASE-NOTES.txt`, the shell will expand the command to:

    $ fossil add README.txt RELEASE-NOTES.txt

…which is compatible with the `fossil add` command's argument list,
which allows multiple files.

Now consider what happens instead if you say:

    $ fossil add --ignore RE* src/*.c

This *does not* do what you want because the shell will expand both `RE*`
and `src/*.c`, causing one of the two files matching the `RE*` glob
pattern to be ignored and the other to be added to the repository. You
need to say this in that case:

    $ fossil add --ignore 'RE*' src/*.c

The single quotes force a POSIX shell to pass the `RE*` glob pattern
through to Fossil untouched, which will do its own glob pattern
matching. There are other methods of quoting a glob pattern or escaping
its special characters; see your shell's manual.

Beware that Fossil's `--ignore` option does not override explicit file
mentions:

    $ fossil add --ignore 'REALLY SECRET STUFF.txt' RE*

You might think that would add everything beginning with `RE` *except*
for `REALLY SECRET STUFF.txt`, but when a file is both given
explicitly to Fossil and also matches an ignore rule, Fossil asks what
you want to do with it in the default case; and it does not even ask
if you gave the `-f` or `--force` option along with `--ignore`.

The spaces in the ignored file name above bring us to another point:
such file names must be quoted in Fossil glob patterns, lest Fossil
interpret it as multiple glob patterns, but the shell interprets
quotation marks itself.

One way to fix both this and the previous problem is:

    $ fossil add --ignore "'REALLY SECRET STUFF.txt'" READ*

The nested quotation marks cause the inner set to be passed through to
Fossil, and the more specific glob pattern at the end &mdash; that is,
`READ*` vs `RE*` &mdash; avoids a conflict between explicitly-listed
files and `--ignore` rules in the `fossil add` command.

Another solution would be to use shell escaping instead of nested
quoting:

    $ fossil add --ignore "\"REALLY SECRET STUFF.txt\"" READ*

It bears repeating that the two glob patterns here are not interpreted
the same way when running this command from a *subdirectory* of the top
checkout directory as when running it at the top of the checkout tree.
If these files were in a subdirectory of the checkout tree called `doc`
and that was your current working directory, the command would instead
have to be:

    $ fossil add --ignore "'doc/REALLY SECRET STUFF.txt'" READ*

The Fossil glob pattern still needs the `doc/` prefix because
Fossil always interprets glob patterns from the base of the checkout
directory, not from the current working directory as POSIX shells do.

When in doubt, use `fossil status` after running commands like the
above to make sure the right set of files were scheduled for insertion
into the repository before checking the changes in. You never want to
accidentally check something like a password, an API key, or the
private half of a public cryptographic key into Fossil repository that
can be read by people who should not have such secrets.


### <a id="windows"></a>Windows

Before we get into Windows-specific details here, beware that this
section does not apply to the several Microsoft Windows extensions that
provide POSIX semantics to Windows, for which you want to use the advice
in [the POSIX section above](#posix) instead:

  *  the ancient and rarely-used [Microsoft POSIX subsystem][mps];
  *  its now-discontinued replacement feature, [Services for Unix][sfu]; or
  *  their modern replacement, the [Windows Subsystem for Linux][wsl]

[mps]: https://en.wikipedia.org/wiki/Microsoft_POSIX_subsystem
[sfu]: https://en.wikipedia.org/wiki/Windows_Services_for_UNIX
[wsl]: https://en.wikipedia.org/wiki/Windows_Subsystem_for_Linux

(The latter is sometimes incorrectly called "Bash on Windows" or "Ubuntu
on Windows," but the feature provides much more than just Bash or Ubuntu
for Windows.)

Neither standard Windows command shell &mdash; `cmd.exe` or PowerShell
&mdash; expands glob patterns the way POSIX shells do. Windows command
shells rely on the command itself to do the glob pattern expansion. The
way this works depends on several factors:

 *  the version of Windows you are using
 *  which OS upgrades have been applied to it
 *  the compiler that built your Fossil executable
 *  whether you are running the command interactively
 *  whether the command is built against a runtime system that does this
    at all
 *  whether the Fossil command is being run from a file named `*.BAT` vs
    being named `*.CMD`

Usually (but not always!) the C runtime library that your `fossil.exe`
executable is built against does this glob expansion on Windows so the
program proper does not have to. This may then interact with the way the
Windows command shell you’re using handles argument quoting. Because of
these differences, it is common to find perfectly valid Fossil command
examples that were written and tested on a POSIX system which then fail
when tried on Windows.

The most common problem is figuring out how to get a glob pattern passed
on the command line into `fossil.exe` without it being expanded by the C
runtime library that your particular Fossil executable is linked to,
which tries to act like [the POSIX systems described above](#posix). Windows is
not strongly governed by POSIX, so it has not historically hewed closely
to its strictures.

For example, consider how you would set `crlf-glob` to `*` in order to
get normal Windows text files with CR+LF line endings past Fossil's
"looks like a binary file" check. The na&iuml;ve approach will not work:

    C:\...> fossil setting crlf-glob *

The C runtime library will expand that to the list of all files in the
current directory, which will probably cause a Fossil error because
Fossil expects either nothing or option flags after the setting's new
value, not a list of file names. (To be fair, the same thing will happen
on POSIX systems, only at the shell level, before `.../bin/fossil` even
gets run by the shell.)

Let's try again:

    C:\...> fossil setting crlf-glob '*'

Quoting the argument like that will work reliably on POSIX, but it may
or may not work on Windows. If your Windows command shell interprets the
quotes, it means `fossil.exe` will see only the bare `*` so the C
runtime library it is linked to will likely expand the list of files in
the current directory before the `setting` command gets a chance to
parse the command line arguments, causing the same failure as above.
This alternative only works if you’re using a Windows command shell that
passes the quotes through to the executable *and* you have linked Fossil
to a C runtime library that interprets the quotes properly itself,
resulting in a bare `*` getting clear down to Fossil’s `setting` command
parser.

An approach that *will* work reliably is:

    C:\...> echo * | fossil setting crlf-glob --args -

This works because the built-in Windows command `echo` does not expand its
arguments, and the `--args -` option makes Fossil read further command
arguments from its standard input, which is connected to the output
of `echo` by the pipe. (`-` is a common Unix convention meaning
"standard input," which Fossil obeys.) A [batch script][fng.cmd] to automate this trick was
posted on the now-inactive Fossil Mailing List.

[fng.cmd]: https://www.mail-archive.com/fossil-users@lists.fossil-scm.org/msg25099.html

(Ironically, this method will *not* work on POSIX systems because it is
not up to the command to expand globs. The shell will expand the `*` in
the `echo` command, so the list of file names will be passed to the
`fossil` standard input, just as with the first example above!)

Another (usually) correct approach which will work on both Windows and
POSIX systems:

    C:\...> fossil setting crlf-glob *,

This works because the trailing comma prevents the glob pattern from
matching any files, unless you happen to have files named with a
trailing comma in the current directory. If the pattern matches no
files, it is passed into Fossil's `main()` function as-is by the C
runtime system. Since Fossil uses commas to separate multiple glob
patterns, this means "all files from the root of the Fossil checkout
directory downward and nothing else," which is of course equivalent to
"all managed files in this repository," our original goal.


## Experimenting

To preview the effects of command line glob pattern expansion for
various glob patterns (unquoted, quoted, comma-terminated), for any
combination of command shell, OS, C run time, and Fossil version,
precede the command you want to test with [`test-echo`][] like so:

    $ fossil test-echo setting crlf-glob "*"
    C:\> echo * | fossil test-echo setting crlf-glob --args -

The [`test-glob`][] command is also handy to test if a string
matches a glob pattern.

[`test-echo`]: /help?cmd=test-echo
[`test-glob`]: /help?cmd=test-glob


## Converting `.gitignore` to `ignore-glob`

Many other version control systems handle the specific case of
ignoring certain files differently from Fossil: they have you create
individual "ignore" files in each folder, which specify things ignored
in that folder and below. Usually some form of glob patterns are used
in those files, but the details differ from Fossil.

In many simple cases, you can just store a top level "ignore" file in
`.fossil-settings/ignore-glob`. But as usual, there will be lots of
edge cases.

[Git has a rich collection of ignore files][gitignore] which
accumulate rules that affect the current command. There are global
files, per-user files, per workspace unmanaged files, and fully
version controlled files. Some of the files used have no set name, but
are called out in configuration files.

[gitignore]: https://git-scm.com/docs/gitignore

In contrast, Fossil has a global setting and a local setting, but the local setting
overrides the global rather than extending it. Similarly, a Fossil
command's `--ignore` option replaces the `ignore-glob` setting rather
than extending it.

With that in mind, translating a `.gitignore` file into
`.fossil-settings/ignore-glob` may be possible in many cases. Here are
some of features of `.gitignore` and comments on how they relate to
Fossil:

 *  "A blank line matches no files...": same in Fossil.
 *  "A line starting with # serves as a comment...": same in Fossil, including
    the possibility of escaping an initial `#` with a backslash to allow globs
    beginning with a hash.
 *  "Trailing spaces are ignored unless they are quoted..." is similar
    in Fossil. All whitespace before and after a glob is trimmed in
    Fossil unless quoted with single or double quotes. Git uses
    backslash quoting instead, which Fossil does not.
 *  "An optional prefix "!" which negates the pattern...": not in
    Fossil.
 *  Git's globs are relative to the location of the `.gitignore` file:
    Fossil's globs are relative to the root of the workspace.
 *  Git's globs and Fossil's globs treat directory separators
    differently. Git includes a notation for zero or more directories
    that is not needed in Fossil.

### Example

In a project with source and documentation:

    work
      +-- doc
      +-- src

The file `doc/.gitignore` might contain:

    # Finished documents by pandoc via LaTeX
    *.pdf
    # Intermediate files
    *.tex
    *.toc
    *.log
    *.out
    *.tmp

Entries in `.fossil-settings/ignore-glob` with similar effect, also
limited to the `doc` folder:

    doc/*.pdf
    doc/*.tex, doc/*.toc, doc/*.log, doc/*.out, doc/*.tmp





## Implementation and References

The implementation of the Fossil-specific glob pattern handling is here:

:File            |:Description
--------------------------------------------------------------------------------
[`src/glob.c`][] | pattern list loading, parsing, and generic matching code
[`src/file.c`][] | application of glob patterns to file names

[`src/glob.c`]: https://fossil-scm.org/home/file/src/glob.c
[`src/file.c`]: https://fossil-scm.org/home/file/src/file.c

See the [Adding Features to Fossil][aff] document for broader details
about finding and working with such code.

The actual pattern matching leverages the `GLOB` operator in SQLite, so
you may find [its documentation][gdoc], [source code][gsrc] and [test
harness][gtst] helpful.

[aff]:  ./adding_code.wiki
[gdoc]: https://sqlite.org/lang_expr.html#like
[gsrc]: https://www.sqlite.org/src/artifact?name=9d52522cc8ae7f5c&ln=570-768
[gtst]: https://www.sqlite.org/src/artifact?name=66a2c9ac34f74f03&ln=586-673
Added www/glossary.md.


















































































































































































































































































































































































































































































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# Glossary

There are several terms-of-art in Fossil that have specific meanings
which are either not immediately obvious to an outsider or which have
technical associations that can lead someone to either use the terms
incorrectly or to get the wrong idea from someone using those terms
correctly. We hope to teach users how to properly “speak Fossil†with
this glossary.

The bullet-point lists following each definition are meant to be
clarifying and illustrative. They are not part of the definitions
themselves.


## <a id="project"></a>Project

A collection of one or more computer files that serve some conceptually
unified purpose, which purpose changes and evolves over time, with the
history of that project being a valuable record.

*   We qualify the Fossil definition of this common word like this to
    set aside cases where a zip file or tarball would suffice. If you
    can pack your project up into such an archive once and be done with
    it, Fossil is overkill.

    And yet that is often just the beginning, since there is often a
    need for something to be changed, so now you have “version 2†of the
    archive file. If you can foresee yourself creating versioned archive
    files for your project, then you probably should be using Fossil for
    it instead, then using Fossil’s [zip] or [tarball] command to
    automatically produce archives of the latest version rather than
    manually produce and track versions of the archive. The web version
    of these commands ([`/zip`][zw] and [`/tarball`][tw]) are
    particularly useful for public distribution of the latest version of
    a project’s files.

*   Fossil was designed to host the SQLite software project, which is
    comprised of source code, makefiles, scripts, documentation files,
    and so forth. Fossil is also useful for many other purposes, such as
    a fiction book project where each chapter is held in a separate file
    and assembled into a finished whole deliverable.

*   We speak of projects being more than one file because even though
    Fossil can be made to track the history of a single file, it is far
    more often the case that when you get to something of a scale
    sufficient to be called a “project,†there is more than one
    version-tracked file involved, if not at the start, then certainly
    by the end of the project.

    To take the example of a fiction book above, instead of putting each
    chapter in a separate file, you could use a single AsciiDoc file for
    the entire book project rather than make use of its [include
    facility][AIF] to assemble it from chapter files, since that does at
    least solve the [key problems][IFRS] inherent in version-tracking
    something like Word’s DOCX format with Fossil instead.

    While Fossil will happily track the single file containing the prose
    of your book project for you, you’re still likely to want separate
    files for the cover artwork, a style sheet for use in converting the
    source document to HTML, scripts to convert that intermediate output
    to PDF and ePub in a reliably repeatable fashion, a `README` file
    containing instructions to the printing house, and so forth.

*   Fossil requires that all the files for a project be collected into a
    single directory hierarchy, owned by a single user with full rights
    to modify those files. Fossil is not a good choice for managing a
    project that has files scattered hither and yon all over the file
    system, nor of collections of files with complicated ownership and
    access rights.

    A project made of an operating system
    installation’s configuration file set is not a good use of Fossil,
    because you’ll have all of your OS’s *other* files intermixed.
    Worse, Fossil doesn’t track OS permissions, so even if you were to
    try to use Fossil as a system deployment tool by archiving versions
    of the OS configuration files and then unpacking them on a new
    system, the extracted project files would have read/write access by
    the user who did the extraction, which probably isn’t what you were
    wanting.

    Even with these problems aside, do you really want a `.fslckout`
    SQLite database at the root of your filesystem? Are you prepared for
    the consequences of saying `fossil clean --verily` on such a system?
    You can constrain that with [the `ignore-glob` setting][IGS], but
    are you prepared to write and maintain all the rules needed to keep
    Fossil from blowing away the untracked portions of the file system?
    We believe Fossil is a poor choice for a whole-system configuration
    backup utility.

    As a counterexample, a project tracking your [Vim] configuration
    history is a much better use of Fossil, because it’s all held within
    `~/.vim`, and your user has full rights to that subdirectory.

[AIF]:     https://docs.asciidoctor.org/asciidoc/latest/directives/include/
[IGS]:     /help?cmd=ignore-glob
[IFRS]:    ./image-format-vs-repo-size.md
[tarball]: /help?cmd=tarball
[tw]:      /help?cmd=/tarball
[Vim]:     https://www.vim.org/
[zip]:     /help?cmd=zip
[zw]:      /help?cmd=/zip


## Repository <a id="repository" name="repo"></a>

A single file that contains all historical versions of all files in a
project, which can be [cloned] to other machines and
[synchronized][sync] with them. Jargon: repo.

*   A Fossil repo is similar to an archive file in that it is a single
    file that stores compressed versions of one or more files.  Files can be
    extracted from the repo, and new files can be added to the repo,
    but a Fossil repo has other capabilities
    above and beyond what simple archive formats can do.

*   Fossil does not care what you name your repository files, though
    we do suggest “`.fossil`†as a standard extension. There is
    only one place in Fossil where that convention is required, being the
    [`fossil server DIRECTORY`][svrcmd] command, since it serves up
    `*.fossil` files from `DIRECTORY`. If you don’t use that feature,
    you can name your repo files anything you like.

*   Cloned and synced repos redundantly store all available information
    about that project, so if any one repo is lost, all of the cloned
    historical content of the project as of the last sync is preserved
    in each surviving repo.

    Each user generally clones the project repository down to each
    computer they use to participate in that project, and there is
    usually at least one central host for the project as well, so there
    is usually plenty of redundancy in any given Fossil-based project.

    That said, a Fossil repository clone is a backup only in a limited
    sense, because some information can’t be cloned, some doesn’t sync
    by default, and some data is neither clonable nor syncable. We cover
    these limitations and the workarounds for them in a separate
    document, [Backing Up a Remote Fossil Repository][backup].

*   Rather than be a backup, a Fossil repository clone is a
    communication method for coordinating work on the project among
    multiple machines and users: local work done against one repository
    is communicated up to its parent repository on the next sync, and
    work done on other repositories that were previously synced up to
    that parent get pulled down into the local repo clone.

    This bidirectional sync is automatic and on by default in Fossil.
    You can [disable it][asdis], or you can [push] or [pull]
    unidirectionally, if you wish.

    The Fossil philosophy is that all project information resides in
    each clone of the repository. In the ideal world, this would occur
    instantly and automatically, but in actual use, Fossil falls
    somewhat short of that mark. Some limitations are simply
    technological: a given clone may be temporarily out of communication
    with its parent repository, network delays exist, and so forth.
    Fossil is [an AP mode system][CAP]. (This is sometimes called
    “eventual consistency.â€) Other cases come down to administrative
    necessity, as covered in [the backup doc][backup].

*   Fossil doesn’t require that you have redundant clones. Whether you
    do or not is a local decision based on usage needs, communication
    requirements, desire for backups, and so forth.

*   Fossil doesn’t care where the repositories are stored, but we
    recommend keeping them all in a single subdirectory such as
    "`~/fossils`" or "`%USERPROFILE%\Fossils`". A flat set of files
    suffices for simple purposes, but you may have use for something
    more complicated. This author uses a scheme like the following on
    mobile machines that shuttle between home and the office:

``` pikchr toggle indent
box "~/museum/" fit
move right 0.1
line right dotted
move right 0.05
box invis "where one stores valuable fossils" ljust

arrow down 50% from first box.s then right 50%
box "work/" fit
move right 0.1
line dotted
move right 0.05
box invis "projects from $DAYJOB" ljust

arrow down 50% from 2nd vertex of previous arrow then right 50%
box "home/" fit
move right 0.1
line dotted right until even with previous line.end
move right 0.05
box invis "personal at-home projects" ljust

arrow down 50% from 2nd vertex of previous arrow then right 50%
box "other/" fit
move right 0.1
line dotted right until even with previous line.end
move right 0.05
box invis "clones of Fossil itself, SQLite, etc." ljust
```

[asdis]:   /help?cmd=autosync
[backup]:  ./backup.md
[CAP]:     ./cap-theorem.md
[cloned]:  /help?cmd=clone
[pull]:    /help?cmd=pull
[push]:    /help?cmd=push
[svrcmd]:  /help?cmd=server
[sync]:    /help?cmd=sync

[repository]:   #repo
[repositories]: #repo


## Version / Revision / Hash / UUID <a id="version" name="hash"></a>

These terms all mean the same thing: a long hexadecimal
[SHA hash value](./hashes.md) that uniquely identifies a particular
[check-in](#ci).

We’ve listed the alternatives in decreasing preference order:

*   **Version** and **revision** are near-synonyms in common usage.
    Fossil’s code and documentation use both interchangeably because
    Fossil was created to manage the development of the SQLite project,
    which formerly used [CVS], the Concurrent Versions System. CVS in
    turn started out as a front-end to [RCS], the Revision Control
    System, but even though CVS uses “version†in its name, it numbers
    check-ins using a system derived from RCS’s scheme, which it calls
    “Revisions†in user-facing output. Fossil inherits this confusion
    honestly.

*   **Hash** refers to the [SHA1 or SHA3-256 hash](./hashes.md) of the
    content of the checked-in data, uniquely identifying that version of
    the managed files. It is a strictly correct synonym, used more often
    in low-level contexts than the term “version.â€

*   **UUID** is a deprecated term still found in many parts of the
    Fossil internals and (decreasingly) its documentation. The problem
    with using this as a synonym for a Fossil-managed version of the
    managed files is that there are [standards][UUID] defining the
    format of a “UUID,†none of which Fossil follows, not even the
    [version 4][ruuid] (random) format, the type of UUID closest in
    meaning and usage to a Fossil hash.(^A pre-Fossil 2.0 style SHA1
    hash is 160 bits, not the 128 bits many people expect for a proper
    UUID, and even if you truncate it to 128 bits to create a “good
    enough†version prefix, the 6 bits reserved in the UUID format for
    the variant code cannot make a correct declaration except by a
    random 1:64 chance. The SHA3-256 option allowed in Fossil 2.0 and
    higher doesn’t help with this confusion, making a Fossil version
    hash twice as large as a proper UUID. Alas, the term will never be
    fully obliterated from use since there are columns in the Fossil
    repository format that use the obsolete term; we cannot change this
    without breaking backwards compatibility.)

You will find all of these synonyms used in the Fossil documentation.
Some day we may settle on a single term, but it doesn’t seem likely.

[CVS]:     https://en.wikipedia.org/wiki/Concurrent_Versions_System
[hash]:    #version
[RCS]:     https://en.wikipedia.org/wiki/Revision_Control_System
[ruuid]:   https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)
[snfs]:    https://en.wikipedia.org/wiki/Snapshot_(computer_storage)#File_systems
[UUID]:    https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_4_(random)
[version]: #version


## Check-in <a id="check-in" name="ci"></a>

A [version] of the project’s files that have been committed to the
[repository]; as such, it is sometimes called a “commit†instead.  A
check-in is a snapshot of the project at an instant in time, as seen from
a single [check-out’s](#co) perspective. It is sometimes styled
“`CHECKIN`â€, especially in command documentation where any
[valid check-in name][ciname] can be used.

*   There is a harmless conflation of terms here: any of the various
    synonyms for [version] may be used where “check-in†is more accurate,
    and vice versa, because there is a 1:1 relation between them. A
    check-in *has* a version, but a version suffices to uniquely look up
    a particular commit.[^snapshot]

*   Combining both sets of synonyms results in a list of terms that is
    confusing to new Fossil users, but it’s easy
    enough to internalize the concepts. [Committing][commit] creates a
    *commit.*  It may also be said to create a checked-in *version* of a
    particular *revision* of the project’s files, thus creating an
    immutable *snapshot* of the project’s state at the time of the
    commit.  Fossil users find each of these different words for the
    same concept useful for expressive purposes among ourselves, but to
    Fossil proper, they all mean the same thing.

*   Check-ins are immutable.

*   Check-ins exist only inside the repository. Contrast a
    [check-out](#co).

*   Check-ins may have [one or more names][ciname], but only the
    [hash] is globally unique, across all time; we call it the check-in’s
    canonical name. The other names are either imprecise, contextual, or
    change their meaning over time and across [repositories].

[^snapshot]: You may sometimes see the term “snapshot†used as a synonym
  for a check-in or the version number identifying said check-in. We
  must warn against this usage because there is a potential confusion
  here: [the `stash` command][stash] uses the term “snapshot,†as does
  [the `undo` system][undo] to make a distinction with check-ins.
  Nevertheless, there is a conceptual overlap here between Fossil and
  systems that do use the term “snapshot,†the primary distinction being
  that Fossil will capture only changes to files you’ve [added][add] to
  the [repository], not to everything in [the check-out directory](#co)
  at the time of the snapshot. (Thus [the `extras` command][extras].)
  Contrast a snapshot taken by a virtual machine system or a
  [snapshotting file system][snfs], which captures changes to everything
  on the managed storage volume.

[add]:    /help?cmd=add
[ciname]: ./checkin_names.wiki
[extras]: /help?cmd=extras
[stash]:  /help?cmd=stash
[undo]:   /help?cmd=undo



## Check-out <a id="check-out" name="co"></a>

A set of files extracted from a [repository] that represent a
particular [check-in](#ci) of the [project](#project).

*   Unlike a check-in, a check-out is mutable. It may start out as a
    version of a particular check-in extracted from the repository, but
    the user is then free to make modifications to the checked-out
    files. Once those changes are formally [committed][commit], they
    become a new immutable check-in, derived from its parent check-in.

*   You can switch from one check-in to another within a check-out
    directory by passing those names to [the `fossil update`
    command][update].

*   Check-outs relate to repositories in a one-to-many fashion: it is
    common to have a single repo clone on a machine but to have it
    [open] in [multiple working directories][mwd]. Check-out directories
    are associated with the repos they were created from by settings
    stored in the check-out directory. This is in the `.fslckout` file on
    POSIX type systems, but for historical compatibility reasons, it’s
    called `_FOSSIL_` by native Windows builds of Fossil.

    (Contrast the Cygwin and WSL Fossil binaries, which use POSIX file
    naming rules.)

*   In the same way that one cannot extract files from a zip archive
    without having a copy of that zip file, one cannot make check-outs
    without access to the repository file or a clone thereof.

*   Because a Fossil repository is an SQLite database file, the same
    rules for avoiding data corruption apply to it. In particular, it is
    [nearly a hard requirement][h2cflp] that the repository clone be on
    the same machine as the one where you make check-outs and the
    subsequent check-ins.

    That said, the relative locations of the repo and the check-out
    within the local file system are arbitrary.  The repository may be
    located inside the folder holding the check-out, but it certainly
    does not have to be, and it usually is not. As an example, [the
    Fossil plugin for Visual Studio Code][fpvsc] defaults to storing the
    repo clone within the project directory as a file called `.fsl`, but
    this is because VSCode’s version control features assume it’s being
    used with Git, where the repository is the `.git` subdirectory
    contents. With Fossil, [different check-out workflows][cwork] are
    preferred.

[commit]: /help?cmd=commit
[cwork]:  ./ckout-workflows.md
[h2cflp]: https://www.sqlite.org/howtocorrupt.html#_file_locking_problems
[fpvsc]:  https://marketplace.visualstudio.com/items?itemName=koog1000.fossil
[open]:   /help?cmd=open
[mwd]:    ./ckout-workflows.md#mcw
[update]: /help?cmd=update


## <a id="docs"></a>Embedded Documentation

Serving as an alternative to Fossil’s built-in [wiki], the [embedded
documentation feature][edoc] stores the same type of marked-up text
files, but under Fossil’s powerful version control features.

*   The simple rule for determining whether to use the wiki or embedded
    docs for any given document is whether the content is considered
    “evergreen,†as with a Wikipedia article.

    While Fossil’s wiki feature does store the history of each
    document’s changes, Fossil always presents the current version of
    the document unless you manually go out of your way to dig back into
    the history.  Then, having done so, links from that historical
    version of the wiki document take you to the current versions of the
    target documents, not to the version contemporaneous with the source
    document.

    The consequence is that if you say something like…

          $ fossil up 2020-04-01
          $ fossil ui --page wcontent

    …you will **not** see the list of wiki articles as of April Fool’s Day in 2020, but
    instead the list of *current* wiki article versions, the same as if you ran it
    from a check-out of the tip-of-trunk.

    Contrast embedded docs, which are not only version-controlled as
    normal files are in Fossil, they participate in all the tagging,
    branching, and other versioning features. There are several
    consequences of this, such as that Fossil’s [special check-in
    names][ciname] work with embedded doc URLs:

    *   <p>If you visit an embedded doc as `/doc/release/file.md` and
        then click on a relative link from that document, you will remain on
        the release branch. This lets you see not only the release
        version of a software project but also the documentation as of
        that release.</p>

    *   <p>If you visit `/doc/2020-04-01/file.md`, you will not only
        pull up the version of `file.md` as of that date, relative links
        will take you to contemporaneous versions of those embedded docs
        as well.</p>

    *   <p>If you say `fossil up 2020-04-01 && fossil ui` and then visit
        `/doc/ckout/file.md`, you’ll not only see the checked-out
        version of the file as of that date, relative links will show
        you other files within that checkout.</p>

*   Fossil’s wiki presents a flat list of articles, while embedded docs
    are stored in the repository’s file hierarchy, a powerful
    organizational tool well-suited to complicated documentation.

*   Your repository’s Home page is a good candidate for the wiki, as is
    documentation meant for use only with the current version of the
    repository’s contents.

*   If you are at all uncertain whether to use the wiki or the embedded
    documentation feature, prefer the latter, since it is inherently
    more powerful, and when you use the [`/fileedit` feature][fef], the
    workflow is scarcely different from using the wiki.

    (This very file is embedded documentation: clone
    [Fossil’s self-hosting repository][fshr] and you will find it as
    `www/glossary.md`.)

[edoc]: ./embeddeddoc.wiki
[fef]:  ./fileedit-page.md
[fshr]: ./selfhost.wiki
[wiki]: ./wikitheory.wiki


## <a id="cap"></a>Capability

Fossil includes a powerful [role-based access control system][rbac]
which affects which users have permission to do certain things within a given
[repository]. You can read more about this complex topic
[here](./caps/).

Some people — and indeed certain parts of Fossil’s own code — use the
term “permissions†instead, but since [operating system file permissions
also play into this](./caps/#webonly), we prefer the term “capabilitiesâ€
(or “caps†for short) when talking about Fossil’s RBAC system to avoid a
confusion here.

[rbac]: https://en.wikipedia.org/wiki/Role-based_access_control

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
Added www/grep.md.



























































































































































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# Fossil grep vs POSIX grep

As of Fossil 2.7, there is a `grep` command which acts roughly like
POSIX's `grep -E` over all historical versions of one or more managed files.
This document explains the commonalities and divergences between [POSIX
`grep`](http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html)
and Fossil `grep`.


## Options

Fossil `grep` implements about half of the options specified for
POSIX `grep`:

| Option | Meaning
|--------|-------------------------------------------------------------
| `-c`   | report the count of matches rather than the matched text
| `-i`   | ignore case in matches
| `-l`   | list a checkin ID prefix for matching historical versions of the file
| `-q`   | no output; return only a status code indicating the success of the match
| `-s`   | suppress error output about missing files
| `-v`   | invert the sense of the match

That leaves several divergences at the option level from POSIX `grep`:

*   You cannot give more than one pattern, as with `grep -e` or
    `grep -f`.

*   There is no equivalent of `grep -F` to do literal fixed-string
    matches only.

*   There is no `-x` option for doing a whole-line match.

*   `fossil grep -l` does not do precisely the same thing as POSIX
    `grep -l`: it lists checkin ID prefixes, not file names.

*   Fossil always gives the line number in its output, which is to say
    that it acts like `grep -n`.  There is no way to disable the line
    number in `fossil grep` output.

Patches to remove those limitations will be thoughtfully considered.

Fossil `grep` doesn’t support any of the GNU and BSD `grep` extensions.
For instance, it doesn’t support the common `-R` extension to POSIX,
which would presumably search a subtree of managed files. If Fossil does
one day get this feature, it would have a different option letter, since
`-R` in Fossil has a different meaning, by convention. Until then, you
can get the same effect on systems with a POSIX shell like so:

    $ fossil grep COMMAND: $(fossil ls src)

If you run that in a check-out of the [Fossil self-hosting source
repository][fshsr], that returns the first line of the built-in
documentation for each Fossil command, across all historical versions.

Fossil `grep` has extensions relative to these other `grep` standards,
such as `--verbose` to print each checkin ID considered, regardless of
whether it matches. This one is noteworthy here because the behavior
used to be under `-v` before we reassigned it to give POSIX-like `grep
-v` behavior.

[fshsr]: ./selfhost.wiki


## Regular Expression Dialect

Fossil contains a built-in regular expression engine implementing a
subset of the [POSIX extended regular expression][ere] dialect:

[ere]: https://en.wikipedia.org/wiki/Regular_expression#POSIX_extended

| Atom    | Meaning
|---------|-------------------------------------------------------------
| `X*`    | zero or more occurrences of X
| `X+`    | one or more occurrences of X
| `X?`    | zero or one occurrences of X
| `X{p,q}`| between p and q occurrences of X, inclusive
| `(X)`   | match X
| <tt>X\|Y</tt>| X or Y
| `^X`    | X occurring at the beginning of a line
| `X$`    | X occurring at the end of a line
| `.`     | Match any single character
| `\c`    | Character `c` where `c` is one of <tt>{}()[]\|\*+?.\\</tt>
| `\c`    | C-language escapes for `c` in `afnrtv`.  ex: `\t` or `\n`
| `\uXXXX`| Where XXXX is exactly 4 hex digits, Unicode value XXXX
| `\xXX`  | Where XX is exactly 2 hex digits, Unicode value XX
| `[abc]` | Any single character from the set `abc`
| `[^abc]`| Any single character not in the set `abc`
| `[a-z]` | Any single character in the range `a-z`
| `[^a-z]`| Any single character not in the range `a-z`
| `\b`    | Word boundary
| `\w`    | Word character: `[A-Za-z0-9_]`
| `\W`    | Non-word character: `[^A-Za-z0-9_]`
| `\d`    | Digit: `[0-9]`
| `\D`    | Non-digit: `[^0-9]`
| `\s`    | Whitespace character: `[ \t\r\n\v\f]`
| `\S`    | Non-whitespace character: `[^ \t\r\n\v\f]`

There are several restrictions in Fossil `grep` relative to a fully
POSIX compatible regular expression engine. Among them are:

*   There is currently no support for POSIX character classes such as
    `[:lower:]`.

*   Fossil `grep` does not currently attempt to take your operating
    system's locale settings into account when doing this match.  Since
    Fossil has no way to mark a given file as having a particular
    encoding, Fossil `grep` assumes the input files are in UTF-8 format.

    This means Fossil `grep` will not work correctly if the files in
    your repository are in an encoding that is not backwards-compatible
    with ASCII, such as UTF-16.  Partially compatible encodings such as
    ISO 8859 should work with Fossil `grep` as long as you stick to
    their ASCII-compatible subset.

The Fossil `grep` language is not a strict subset of POSIX extended
regular expressions.  Some of the features documented above are
well-understood extensions to it, such as the "word" features `\b`, `\w`
and `\W`.

Fossil `grep` is based on the Unicode engine from [SQLite's FTS5
feature][fts5].  This means it does do things like Unicode-aware case
folding. Therefore, it is usually a user error to attempt to substitute
`[a-z]` for a lack of the POSIX character class `[:lower:]` if you are
grepping over pretty much any human written language other than English.
Use `fossil grep -i` instead, which does Unicode case folding.

[fts5]: https://www.sqlite.org/fts5.html


## Algorithm Details

Fossil `grep` uses a [nondeterministic finite automaton][nfa] for
matching, so the performance is bounded by ***O(nm)*** where ***n*** is
the size of the regular expression and ***m*** is the size of the input
string.

[nfa]: https://en.wikipedia.org/wiki/Nondeterministic_finite_automaton

In order to avoid [ReDoS attacks][redos], the Fossil regular expression
matcher was purposely written to avoid [implementation choices][rei]
which have the potential to require exponential evaluation time. This
constrains the possible feature set we can support in the Fossil `grep`
dialect. For instance, we are unlikely to ever add support for
[backtracking][bt].

[redos]: https://en.wikipedia.org/wiki/ReDoS
[rei]:   https://en.wikipedia.org/wiki/Regular_expression#Implementations_and_running_times
[bt]:    https://en.wikipedia.org/wiki/Backtracking

The `X{p,q}` operator expands to `p` copies of `X` followed by `q-p`
copies of `X?` before RE evaluation. The ***O(nm)*** performance bound
above remains true for this case, but realize that it applies to the RE
*after* this expansion, not to the form as given by the user.  In other
words, as `q-p` increases, so does the RE evaluation time.
Added www/gsoc-ideas.md.

















































































































































































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# List of Projects and Tasks

This list was made for the Fossil project's application for [Google Summer of Code](https://summerofcode.withgoogle.com/) in 2021. That application was
unsuccessful, but still this list is a starting point for anyone looking
for a place to start. We welcome newcomers, and invite developers to follow the simple
[procedures for contributing to Fossil](./contribute.wiki). The
[hacker how-to](./hacker-howto.wiki) is recommended reading.

There are two implementations of the Fossil data model:

* [the classic Fossil project](https://fossil-scm.org) , which is where this file is maintained and 
  which is as of 2021 how everyone interacts with Fossil objects 
* [libfossil](https://fossil.wanderinghorse.net/r/libfossil), which is an independent project to manipulate Fossil objects from a library, or using commandline tools which are thin wrappers to the library

As of 2021 the two implementations have an identical implementation of the
Fossil data model, are 100% compatible in terms of data access since they use
the same SQL, and are 100% binary compatible in terms of on-disk storage.

The projects listed here are grouped by functionality - User Interface, Integration, Email,
etc. If you are looking for something easy to start with, then depending where
your interests lie, there are some small libfossil tasks and small
features to work on in the UI.

# UI, Look and Feel

Tasks for those interested in graphic/web design:

* Add a quote button to the Forum, such as [discussed in this thread](https://fossil-scm.org/forum/forumpost/7ad03cd73d)
* Improve the documentation history-browsing page to enable selection of 2 arbitrary versions to diff, similar to the [Mediawiki history feature enabled on Wikipedia](https://en.wikipedia.org/w/index.php?title=Fossil_(software)&action=history)
* Allow diffing of Forum posts
* General touch-ups in the existing skins. This may, depending on how deep one
  cares to dig, require digging into C code to find, and potentially modify, how
  the HTML is generated.
* Creation of one or more new skins. This does not specifically require any C
  know-how.
* Complete per-feature CSS facilities in [the Inskinerator](https://tangentsoft.com/inskinerator/dir) and add features to the Inskinerator

# Projects Relating to Fossil Integration

* Fossil hooks for pipelines with CI/CD such as static analysis, Buildbot, Gerrit, Travis and Jenkins are not well-documented and may need some further development. Make this work better, with configuration examples
* Create a [Pandoc](https://pandoc.org) filter that handles Fossil-style Markdown
* Create a [Pandoc filter that handles Pikchr](https://groups.google.com/g/pandoc-discuss/c/zZSspnHHsg0?pli=1) (Pikchr can be used with many kinds of layout, not just Markdown)
* Editor integration: [improve the Fossil VSCode plugin](https://marketplace.visualstudio.com/items?itemName=koog1000.fossil) or [create a Fossil plugin for Eclipse](https://marketplace.eclipse.org/taxonomy/term/26%2C31)
* Develop a test suite for the draft JSON API in libfossil. This JSON API is a way of integrating many kinds of systems with Fossil
* Re-implement the draft JSON API in libfossil to use the JSON capability in SQLite, now that SQLite has JSON. This is a large project and would start with feasibility analysis

# Adding Inbound (Receiving) Email to Fossil

This task involves designing a new feature and working with Fossil developers to 
see how it can be feasible in practice.

Fossil can [send email alerts](./alerts.md), but cannot receive email at all.
That is a good thing, because a complete [SMTP
MTA](https://en.wikipedia.org/wiki/MTA) is complicated and requires constant
maintenance, so Fossil should not try to be an MTA or ever listen to mail ports
on the Internet. 

There is one specific type of email reception that make sense for Fossil to
handle.  When there is inbound mail related to a message that Fossil has
previously generated with a unique hash, Fossil already knows the context of
that message.  An unknown sender cannot guess a valid hash although a malicious
sender could of course find a way to receive a valid hash and then use that to
gain access.  The risk of automatic and non-specific spam is very low. 

A proposal to handle that would be to implement a Fossil command like this:

```
fossil email -R repo receive -t TYPE-OF-EMAIL -h HASH
```

Where the type of email would be one of a list something like this:

* mail_bounce
* ticket_reply
* forum_reply

This command is a non-network-aware [Mail Delivery
Agent](https://en.wikipedia.org/wiki/Mail_delivery_agent), and would be called
by an SMTP MTA such as Postfix, Courier or Exim. The MTA would need to be
configured to recognise that this is an email intended for Fossil, and what
type of email, and to extract its hash.  People who configure MTAs are used to
doing this sort of thing, but no doubt Fossil would include a sample
[Postfix mail filter](http://www.postfix.org/FILTER_README.html#simple_filter) and 
an equivalent driver for Exim.

The Fossil command would reject anything that doesn't look like a bounce it is expecting.

It is not certain that this design is the best one to address the inbound mail
problem. That is why the first part of this task is to find a workable design.

# Work relating to the ticketing system in Fossil

The Fossil SCM project uses tickets in a [somewhat unusual manner](https://fossil-scm.org/home/reportlist)
because the social programming
model has evolved to often use the Forum instead of ticketing.  Other Fossil-using projects
use tickets in a more traditional report-a-bug manner. So this means that the
Fossil ticketing system user interface is underdeveloped.

On the other hand, pretty much every software developer uses a ticketing system
at some point in their workflow, and Fossil is intended to be usable by most
developers. That means the ticketing system really needs to be further
developed. The underlying technology for the Fossil ticketing system is
guaranteed, so to improve it requires only user interface changes.

Projects relating to the ticketing system include:

* Improving the [Fossil cli for tickets](https://fossil-scm.org/forum/forumpost/d8e8a1cf92) which is confusing, as pointed out in that ticket. This is still classified as a "user interface" even though it isn't graphical.
* Alternatively, instead of improving Fossil's cli, implement a comprehensive ticket commandline with [libfossil's primitives](https://fossil.wanderinghorse.net/r/libfossil/wiki/home), look under the f-apps/ directory.
* Improving the Fossil web UI for ticketing, which is clunky to say the least. Fossil tries not be a heavy user of Javascript and Javascript libraries, but the wikiedit, chat and Forum code are all more advanced than ticketing, 
and have UI features that would improve ticketing
* If there is an inbound email system as per the previous section "Adding Inbound (Receiving) Email to Fossil", then implement this system for ticketing

# Tasks Requiring Fossil Data Model Knowledge

The Fossil data model concepts are simple, but the implications are quite subtle and impressive. The data model
is designed to [endure for centuries](./fileformat.wiki),
be [easily accessible](./fossil-v-git.wiki#durable), and is [non-relational](./fossil-is-not-relational.md).
You will need to understand the data model to work on the following tasks:

* Add the ability to tag non-checkin artifacts, something supported by
  the data model but not the current CLI and UIs. This would open the
  door to numerous new features, such as "sticky" forum posts and
  per-file extended attributes. This could also relate to the RBAC
  system.
* Implement "merge" and "stash" in libfossil
* Analyse the different kinds of [split/export/shallow clone](https://fossil-scm.org/forum/forumpost/1aa4f8ea8c6f96) use cases for Fossil including [complete bifurcation](https://fossil-scm.org/forum/forumpost/6434a06871). There are many proposals, relating to many different use cases, and a good analysis would help us to work out what should be implemented, and what should be implemented in Fossil and what is instead a libfossil wrapper

# Fossil is cool

There are many reasons why Fossil is just plain cool:

* Fossil is symbiotically connected with [SQL and SQLite](5631123d66d96)
* Fossil is highly portable accross different operating systems
* Fossil is the [only credible alternative to Git](./fossil-v-git.wiki)
* Fossil is both ultra-long-term stable and has a high rate of development and new features
* Fossil has thought deeply about Comp Sci principles including [CAP Theorem](./cap-theorem.md) and [whether Fossil is a blockchain](./blockchain.md)
* Fossil has two independent implementations of the same data model: Fossil and libfossil

and a lot, lot more, in the source, docs, forum and more.




``` pikchr center toggle 
// Click to see the rendered diagram this describes,
// written in Fossil's built-in pikchr language, see https://pikchr.org
// 
// based on pikchr script by Kees Nuyt, licensed
// https://creativecommons.org/licenses/by-nc-sa/4.0/

scale = 1.0
eh = 0.5cm
ew = 0.2cm
ed = 2 * eh
er = 0.4cm
lws = 4.0cm
lwm = lws + er
lwl = lwm + er

ellipse height eh width ew fill Bisque color CadetBlue 
L1: line width lwl from last ellipse.n
line "click for" bold above width lwm from last ellipse.s
LV: line height eh down

move right er down ed from last ellipse.n
ellipse height eh width ew fill Bisque color CadetBlue 
L3: line "example of Fossil" bold width lws right from last ellipse.n to LV.end then down eh right ew
line width lwm right from last ellipse.s then to LV.start

move right er down ed from last ellipse.n
ellipse height eh width ew fill Bisque color CadetBlue 
line width lwl right from last ellipse.n then to L1.end
line "coolness" bold width lwl right from last ellipse.s then up eh

```


Added www/hacker-howto.wiki.

















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<title>Fossil Developer How-To</title>

The following links are of interest to programmers who want to modify
or enhance Fossil itself.  Ordinary users can safely ignore this information.

  *  [./build.wiki | How To Compile And Install Fossil]
  *  [./customskin.md | Theming Fossil]
  *  [./adding_code.wiki#newcmd | Adding New Commands To Fossil]
  *  [./makefile.wiki | The Fossil Build Process]
  *  [./tech_overview.wiki | A Technical Overview of Fossil]
  *  [./contribute.wiki|Contributing Code Or Enhancements To The Fossil Project]
  *  [./fileformat.wiki|Fossil Artifact File Format]
  *  [./sync.wiki|The Sync Protocol]
  *  [./style.wiki | Coding Style Guidelines]
  *  [./checkin.wiki | Pre-checkin Checklist]
  *  [../test/release-checklist.wiki | Release Checklist]
  *  [./backoffice.md | The "backoffice" subsystem]
Added www/hashes.md.


























































































































































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# Hashes: Fossil Artifact Identification

All artifacts in Fossil are identified by a unique hash, currently using
[the SHA3 algorithm by default][hpol], but historically using the SHA1
algorithm:

| Algorithm | Raw Bits | Hexadecimal digits |
|-----------|----------|--------------------|
| SHA3-256  | 256      | 64                 |
| SHA1      | 160      | 40                 |

There are many types of artifacts in Fossil: commits (a.k.a. check-ins),
tickets, ticket comments, wiki articles, forum postings, file data
belonging to check-ins, etc. ([More info...](./concepts.wiki#artifacts)).

There is a loose hierarchy of terms used instead of “hash†in various
parts of the Fossil UI, which we cover in the sections below.


## Names

Several Fossil interfaces accept [a wide variety of check-in
names][cin]: commit artifact hashes, ISO8601 date strings, branch names,
etc. Fossil interfaces that accept any of these options usually
document the parameter as “NAMEâ€, so we will use that form to refer to
this specialized use.

Artifact hashes are only one of many different types of NAME.  We use
the broad term “NAME†to refer to the whole class of options. We use
more specific terms when we mean one particular type of NAME.


## Versions

When an artifact hash refers to a specific commit, Fossil sometimes
calls it a “VERSION,†a “commit ID,†or a “check-in ID.â€
We may eventually settle on one of these terms, but all three are
currently in common use within Fossil’s docs, UI, and programming
interfaces.

A VERSION is a specific type of artifact hash, distinct
from, let us say, a wiki article artifact hash.

A unique prefix of a VERSION hash is itself a VERSION. That is, if your
repository has exactly one commit artifact with a hash prefix of
“abc123â€, then that is a valid version string as long as it remains
unambiguous.



## <a id="uvh"></a>UUIDs

Fossil uses the term “UUID†as a short alias for “artifact hash†in its
internals. There are a few places where this leaks out into external
interfaces, which we cover in the sections below. Going forward, we
prefer one of the terms above in public interfaces instead.

Whether this short alias is correct is debateable.

One argument is that since "UUID" is an acronym for “Universally Unique
Identifier,†and both SHA1 and SHA3-256 are larger and stronger than the
128-bit algorithms used by “proper†UUIDs, Fossil artifact hashes are
*more universally unique*. It is therefore quibbling to say that Fossil
UUIDs are not actually UUIDs. One wag suggested that Fossil artifact
hashes be called MUIDs: multiversally unique IDs.

The common counterargument is that the acronym “UUID†was created for [a
particular type of universally-unique ID][uuid], with particular ASCII
and bitfield formats, and with particular meaning given to certain of
its bits. In that sense, no Fossil “UUID†can be used as a proper UUID.

Be warned: attempting to advance the second position on the Fossil
discussion forum will get you nowhere at this late date. We’ve had the
debates, we’ve done the engineering, and we’ve made our evaluation. It’s
a settled matter: internally within Fossil, “UUID†is defined as in this
section’s leading paragraph.

To those who remain unconvinced, “fixing†this would require touching
almost every source code file in Fossil in a total of about a thousand
separate locations. (Not exaggeration, actual data.) This would be a
massive undertaking simply to deal with a small matter of terminology,
with a high risk of creating bugs and downstream incompatibilities.
Therefore, we are highly unlikely to change this ourselves, and we are
also unlikely to accept a patch that attempts to fix it.


### Repository DB Schema

The primary place where you find "UUID" in Fossil is in the `blob.uuid`
table column, in code dealing with that column, and in code manipulating
*other* data that *refers* to that column. This is a key lookup column
in the most important Fossil DB table, so it influences broad swaths of
the Fossil internals.

For example, C code that refers to SQL result data on `blob.uuid`
usually calls the variable `zUuid`. That value may then be inserted into
a table like `ticket.tkt_uuid`, creating a reference back to
`blob.uuid`, and then be passed to a function like `uuid_to_rid()`.
There is no point renaming a single one of these in isolation: it would
create needless terminology conflicts, making the code hard to read and
understand, risking the creation of new bugs.

You may have local SQL code that digs into the repository DB using these
column names. While you may rest easy, assured now that we are highly
unlikely to ever rename these columns, the Fossil repository DB schema
is not considered an external user interface, and internal interfaces
are subject to change at any time. We suggest switching to a more stable
API: [the JSON API][japi], [`timeline.rss`][trss], [TH1][th1], etc.


### TH1 Scripting Interfaces

Some [TH1][th1] interfaces expose Fossil internals flowing from
`blob.uuid`, so “UUID†is a short alias for “artifact hash†in TH1.  For
example, the `$tkt_uuid` variable &mdash; available when [customizing
the ticket system][ctkt] &mdash; is a ticket artifact hash, exposing the
`ticket.tkt_uuid` column, which has a SQL relation to `blob.uuid`.

TH1 is a longstanding public programming interface. We cannot rename its
interfaces without breaking existing TH1 Fossil customizations. We are
also unlikely to provide a parallel set of variables with “betterâ€
names, since that would create a mismatch with respect to the internals
they expose, creating a different sort of developer confusion in its
place.


### JSON API Parameters and Outputs

[The JSON API][japi] frequently uses the term “UUID†in the same sort of way,
most commonly in [artifact][jart] and [timeline][jtim] APIs. As with
TH1, we can’t change this without breaking code that uses the JSON
API as originally designed, so we take the same stance.


### `manifest.uuid`

If you have [the `manifest` setting][mset] enabled, Fossil writes a file
called `manifest.uuid` at the root of the check-out tree containing the
commit hash for the current checked-out version. Because this is a
public interface that existing code depends on, we are unwilling to
rename the file.


[cin]:  ./checkin_names.wiki
[ctkt]: ./custom_ticket.wiki
[hpol]: ./hashpolicy.wiki
[japi]: ./json-api/
[jart]: ./json-api/api-artifact.md
[jtim]: ./json-api/api-timeline.md
[mset]: /help?cmd=manifest
[th1]:  ./th1.md
[trss]: /help?cmd=/timeline.rss
[tvb]:  ./branching.wiki
[uuid]: https://en.wikipedia.org/wiki/Universally_unique_identifier
Added www/hashpolicy.wiki.







































































































































































































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<title>Hash Policy</title>

<h2>Executive Summary</h2>

<b>Or: How To Avoid Reading This Article</b>

There was much angst over the [http://www.shattered.io|SHAttered attack]
against SHA1 when it was announced in early 2017.  If you are concerned
about this and its implications for Fossil, simply
[./quickstart.wiki#install|upgrade to Fossil 2.1 or later], and the
problem will go away.  Everything will continue to work as before.

  *  Legacy repositories will continue working just as
     they always have, without any conversions or upgrades.
  *  Historical check-ins will keep their same historical
     SHA1 names.
  *  New check-ins will get more secure SHA3-256 hash names.
  *  Everything will continue as if nothing happened.
  *  Your workflow will be unchanged.

But if you are curious and want a deeper understanding of what is
going on, read on...


<h2>Introduction</h2>

The first snapshot-based distributed version control system
was [http://www.monotone.ca|Monotone].  Many of the ideas behind the design
of Fossil were copied from Monotone, including the use of a SHA1 hash to
assign names to artifacts.  Git and Mercurial did the same thing.

The SHA1 hash algorithm is used only to create names for artifacts in Fossil
(and in Git, Mercurial, and Monotone).  It is not used for security.
Nevertheless, when the [http://www.shattered.io|SHAttered attack] found
two different PDF files with the same SHA1 hash, many users learned that
"SHA1 is broken".  They see that Fossil (and Git, Mercurial, and Monotone)
use SHA1 and they therefore conclude that "Fossil is broken".  This is
not true, but it is a public relations problem.  So the decision
was made to migrate Fossil away from SHA1.

This article describes how that migration is occurring.

<h2>Use Of Hardened SHA1</h2>

In Fossil version 2.0 ([/timeline?c=version-2.0|2017-03-03]),
the internal SHA1 implementation was changed from a generic
FIPS PUB 180-4 SHA1 implementation to a "Hardened SHA1"
&#91;[https://github.com/cr-marcstevens/sha1collisiondetection|1]&#93;
&#91;[https://marc-stevens.nl/research/papers/C13-S.pdf|2]&#93;.

The Hardened SHA1 algorithm automatically detects when the artifact
being hashed is specifically designed to exploit the known weaknesses
in the SHA1 algorithm, and when it detects such an attack it changes
the hash algorithm (by increasing the number of rounds in the compression
function) to make the algorithm secure again.  If the attack detection
gets a false-positive, that means that Hardened SHA1 will get a different
answer than the standard FIPS PUB 180-4 SHA1, but the creators of
Hardened SHA1 (see the second paper
&#91;[https://marc-stevens.nl/research/papers/C13-S.pdf|2]&#93;)
report that the probability of a false-positive is vanishingly small -
less than 1 false positive out of 10<sup><font size=1>27</font></sup>
hashes.

Hardened SHA1 is slower (and a lot bigger) but Fossil does not do that
much hashing, so performance is not really an issue.

All versions of Fossil moving forward will use Hardened SHA1.  So if
someone says "SHA1 is broken, and Fossil uses SHA1, therefore Fossil is
broken," you can rebut the argument by pointing out that Fossil uses
<em>Hardened SHA1</em>, not generic SHA1, and Hardened SHA1 is <em>not</em>
broken.

<h2>Support For SHA3-256</h2>

Prior to Fossil version 2.0 ([/timeline?c=version-2.0|2017-03-03]),
all artifacts in all Fossil repositories were named
by only a SHA1 hash.
Version 2.0 extended the [./fileformat.wiki|Fossil file format]
to allow artifacts to be named by either SHA1 or SHA3-256 hashes.
(SHA3-256 is the only variant of SHA3 that
Fossil uses for artifact naming, so for the remainder of this article
it will be called simply "SHA3".  Similarly, "Hardened SHA1" will
be shortened to "SHA1" in the remaining text.)

To be clear: Fossil (version 2.0 and later)
allows the SHA1 and SHA3 hashes to be mixed within
the same repository.  Older check-ins, created years ago,
continue to be named using their legacy SHA1 hashes while
newer check-ins are named using modern SHA3 hashes.  There
is no need to "convert" a repository from SHA1 over to SHA3.
You can see this in Fossil itself.  The recent
[9d9ef82234f63758] check-in uses a SHA3 hash whereas the older
[1669115ab9d05c18] check-in uses a SHA1 hash.

Other than permitting the use of SHA3 in addition to SHA1, there
were no file format changes in Fossil version 2.0 relative
to the previous version 1.37.  Both Fossil 2.0 and Fossil 1.37 read
and write all the same repositories and sync with one another, as long
as none of the repositories contain artifacts named using SHA3.  If
a repository does contain artifacts named using SHA3, Fossil 1.37 will
not know how to interpret those artifacts and will generate various warnings
and errors.

<h2>How Fossil Decides Which Hash Algorithm To Use For New Artifacts</h2>

If newer versions of Fossil are able to use either SHA1 or SHA3 to
name artifacts, which hash algorithm is actually used?  That question
is answered by the "hash policy".  These are the supported hash policies:

<table cellpadding=10>
<tr>
<td valign='top'>sha1</td>
<td>Name all new artifacts using the (Hardened) SHA1 hash algorithm.</td>
</tr>
<tr>
<td valign='top'>auto</td>
<td>Name new artifacts using the SHA1 hash algorithm, but if any
artifacts are encountered which are already named using SHA3, then
automatically switch the hash policy to "sha3"</td>
</tr>
<tr>
<td valign='top'>sha3</td>
<td>Name new artifacts using the SHA3 hash algorithm if the artifact
does not already have a SHA1 name.  If the artifact already has a SHA1
name, then continue to use the older SHA1 name.  Use SHA3 for new
artifacts that have never before been encountered.</td>
</tr>
<tr>
<td valign='top'>sha3-only</td>
<td>Name new artifacts using the SHA3 hash algorithm even if the artifact
already has a SHA1 name.  In other words, force the use of SHA3.  This can
cause some artifacts to be added to the repository twice, once under their
SHA1 name and again under their SHA3 name, but delta compression will
prevent that from causing repository size problems.</td>
</tr>
<tr>
<td valign='top'>shun-sha1</td>
<td>Like "sha3-only" but at this level do not accept a push of SHA1-named
artifacts.  If another Fossil instance tries to push a SHA1-named artifact,
that artifact is discarded and ignored.
</tr>
</table>

For Fossil 2.0, and obviously also for Fossil 1.37 and before, the
only hash policy supported was the one now called "sha1", meaning that
all new artifacts were named
using a SHA1 hash.
Even though Fossil 2.0 added the capability of understanding SHA3 hashes, it
never actually generates any SHA3 hashes.

From Fossil 2.1 through 2.9, the default hash policy for legacy repositories
changed to "auto", meaning that
Fossil continued to generate only SHA1 hashes until it
encountered one artifact with a SHA3 hash.  Once those older versions of
Fossil saw a single SHA3 hash, they
automatically switched to "sha3" mode and thereafter generated
only SHA3 hashes.

When a new repository is created by cloning, the hash policy is copied
from the parent.

For new repositories created using the
[/help?cmd=new|fossil new] command the default hash policy is "sha3".
That means new repositories
will normally hold nothing except SHA3 hashes.  The hash policy for new
repositories can be overridden using the "--sha1" option to the
"fossil new" command.

If you are still on Fossil 2.1 through 2.9 but you want Fossil to go
ahead and start using SHA3 hashes, change the hash policy to
"sha3" using a command like this:

<verbatim>
fossil hash-policy sha3
</verbatim>

The next check-in will use a SHA3 hash, so that when that check-in is pushed
to colleagues, their clones will include the new SHA3-named artifact, so
their local Fossil instances will automatically convert their clones to
"sha3" mode as well.

Of course, if some members of your team stubbornly refuse to upgrade past
Fossil 1.37, you should avoid changing the hash policy and creating
artifacts with SHA3 names, because once you do that your recalcitrant
coworkers will no longer be able to collaborate.

<h2>A Pure SHA3 Future</h2>

Fossil 2.10 changed the default hash policy to "sha3" mode even for
legacy repositories, so if you
upgrade to the latest version of Fossil, all of your new artifacts will
use a SHA3 hash.  Legacy SHA1 artifacts continue to use their original
names, but new artifacts will use SHA3 names. You might not even notice
this automatic change over to stronger hashes.

We decided to make the change to pure SHA3 since the last known distributor 
of Fossil 1.x binaries — Debian 9 — was finally replaced in June 2019 
by Debian 10, which included Fossil 2.8. All other known sources of 
Fossil 1.x binaries upgraded well before that point.
Added www/hints.wiki.










































































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<title>Fossil Tips And Usage Hints</title>

A collection of useful hints and tricks in no particular order:

  1.  Click on two nodes of any timeline graph in succession
      to see a diff between the two versions.

  2.  Add the "--tk" option to "[/help?cmd=diff | fossil diff]" commands
      to get a pop-up
      window containing a complete side-by-side diff.  (NB:  The pop-up
      window is run as a separate Tcl/Tk process, so you will need to
      have Tcl/Tk installed on your machine for this to work.  Visit
      [http://www.activestate.com/activetcl] for a quick download of
      Tcl/Tk if you do not already have it on your system.)

  3.  The "[/help/clean | fossil clean -x]" command is a great
      alternative to "make clean". You can use "[/help/clean | fossil clean -f]"
      as a slightly safer alternative if the "ignore-glob" setting is
      not set. WARNING: make sure you did a "fossil add" for all source-files
      you plan to commit, otherwise those files will be deleted without warning.

  4.  Use "[/help?cmd=all | fossil all changes]" to look for any uncommitted
      edits in any of your Fossil projects.  Use
      "[/help?cmd=all | fossil all pull]" on your laptop
      prior to going off network (for example, on a long plane ride)
      to make sure you have all the latest content locally.  Then run
      "[/help/all|fossil all push]" when you get back online to upload
      your changes.

  5.  To see an entire timeline, type "all" into the "Max:" entry box.

  6.  You can manually add a "c=CHECKIN" query parameter to the timeline
      URL to get a snapshot of what was going on about the time of some
      check-in.  The "CHECKIN" can be
      [./checkin_names.wiki | any valid check-in or version name], including
      tags, branch names, and dates.  For example, to see what was going
      on in the Fossil repository on 2008-01-01, visit
      [/timeline?c=2008-01-01].

  7.  Further to the previous two hints, there are lots of query parameters
      that you can add to timeline pages.  The available query parameters
      are tersely documented [/help?cmd=/timeline | here].

  8.  You can run "[/help?cmd=xdiff | fossil xdiff --tk $file1 $file2]"
      to get a Tk pop-up window with side-by-side diffs of two files, even if
      neither of the two files is part of any Fossil repository.  Note that
      this command is "xdiff", not "diff".  Change <nobr>--tk</nobr> to
      <nobr>--by</nobr> to see the diff in your web browser.

  9.  On web pages showing the content of a file (for example
      [/artifact/c7dd1de9f]) you can manually
      add a query parameter of the form "ln=FROM,TO" to the URL that
      will cause the range of lines indicated to be highlighted.  This
      is useful in pointing out a few lines of code using a hyperlink
      in an email or text message.  Example:
      [/artifact/c7dd1de9f?ln=28,30].
      Adding the "ln" query parameter without any argument simply turns
      on line numbers.   This feature only works right with files with
      a mimetype of text/plain, of course.

  10.  When editing documentation to be checked in as managed files, you can
       preview what the documentation will look like by using the special
       "ckout" branch name in the "doc" URL while running "fossil ui".
       See the [./embeddeddoc.wiki | embedded documentation] for details.

  11.  Use the "[/help?cmd=ui|fossil ui /]" command to bring up a menu of
       all of your local Fossil repositories in your web browser.

  12.  If you have a bunch of Fossil repositories living on a remote machine
       that you are able to access using ssh using a command like
       "ssh login@remote", then you can bring up a user interface for all
       those remote repositories using the command:
       "[/help?cmd=ui|fossil ui login@remote:/]".  This works by tunneling
       all HTTP traffic through SSH to the remote machine.
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# The History And Purpose Of Fossil

Fossil is a [distributed version control system (DVCS)][100] written
beginning in [2007][105] by the [architect of SQLite][110] for the
purpose of managing the [SQLite project][115].

[100]: https://en.wikipedia.org/wiki/Distributed_version_control
[105]: /timeline?a=1970-01-01&n1=10
[110]: https://sqlite.org/crew.html
[115]: https://sqlite.org/

Though Fossil was originally written specifically to support SQLite,
it is now also used by countless other projects.  The SQLite architect (drh)
is still the top committer to Fossil, but there are also
[many other contributors][120].

[120]: /reports?type=ci&view=byuser

## History

The SQLite project started out using [CVS][300], as CVS was the most
commonly used version control system in that era (circa 2000).  CVS
was an amazing version control system for its day in that it allowed
multiple developers to be editing the same file at the same time.

[300]: https://en.wikipedia.org/wiki/Concurrent_Versions_System

Though innovative and much loved in its time, CVS was not without problems.
Among those was a lack of visibility into the project history and the
lack of integrated bug tracking.  To address these deficiencies,
the SQLite author developed the [CVSTrac][305] wrapper for CVS beginning
in [2002][310].

[305]: http://cvstrac.org/
[310]: http://cvstrac.org/fossil/timeline?a=19700101&n1=10

CVSTrac greatly improved the usability of CVS and was adopted by
other projects.  CVSTrac also [inspired the design][315] of [Trac][320],
which was a similar system that was (and is) far more widely used.

[315]: https://trac.edgewall.org/wiki/TracHistory
[320]: https://trac.edgewall.org/

Historians can see the influence of CVSTrac on the development of
SQLite.  [Early SQLite check-ins][325] that happened before CVSTrac
often had a check-in comment that was just a "smiley".
That was not an unreasonable check-in comment, as check-in comments
were scarcely seen and of questionable utility in raw CVS.  CVSTrac
changed that, making check-in comments more visible and more useful.
The SQLite developers reacted by creating [better check-in comments][330].

[325]: https://sqlite.org/src/timeline?a=19700101&n1=10
[330]: https://sqlite.org/src/timeline?c=20030101&n1=10&nd

At about this same time, the [Monotone][335] system appeared.
Monotone was one of the first distributed version control systems. As far as
this author is aware, Monotone was the first VCS to make use of
SHA1 to identify artifacts.  Monotone stored its content in an SQLite
database, which is what brought it to the attention of the SQLite architect.
These design choices were a major source of inspiration for Fossil.

[335]: https://www.monotone.ca/

Beginning around 2005, the need for a better version control system
for SQLite began to become evident.  The SQLite architect looked
around for a suitable replacement.  Monotone, Git, and Mercurial were
all considered.  But at that time, none of these supported sync
over ordinary HTTP, none could be run from an inexpensive shell
account on a leased server (this was before the widespread availability
of affordable virtual private servers), and none of them supported anything 
resembling the wiki and ticket features of CVSTrac that had been 
found to be so useful.  And so, the SQLite architect began writing
his own DVCS.

Early prototypes were done in [TCL][340].  As experiments proceeded,
however, it was found that the low-level byte manipulates needed for
things like delta compression and computing diffs
were better implemented in plain old C.
Experiments continued.  Finally, a prototype capable of self-hosting
was devised on [2007-07-16][345].

[340]: https://www.tcl.tk/
[345]: https://fossil-scm.org/fossil/timeline?c=200707211410&n1=10

The first project hosted by Fossil was Fossil itself.  After a
few months of development work, the code was considered stable enough
to begin hosting the [SQLite documentation repository][350] which was
split off from the main SQLite CVS repository on [2007-11-12][355].
After two years of development work on Fossil, the
SQLite source code itself was transferred to Fossil on
[2009-08-11][360].

[350]: https://www.sqlite.org/docsrc/doc/trunk/README.md
[355]: https://www.sqlite.org/docsrc/timeline?c=200711120345&n1=10
[360]: https://sqlite.org/src/timeline?c=b0848925babde524&n1=12&y=ci
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# Hooks

Hooks are short scripts that Fossil runs at defined points of processing.
Administrators can use hooks to help enforce policy or connect Fossil to
a continuous integration (CI) system.

## Interim Documentation.

  *  This is a work-in-progress.  The interface is in flux.
     For the time being, the documentation is a list of
     bullet points.  We hope to transform this into a proper document
     later, after things settle down.

  *  Contributions and suggestions to the hook system and/or the
     documentation are welcomed.

## General Notes.

  *  Each hooks has a "type", a "sequence", and a "command".  The command
     is a shell command that runs at the appropriate time.  The type
     is currently one of "after-receive", "before-commit", "commit-msg",
     or "disabled". The sequence is an arbitrary integer.

  *  There can be multiple hooks of the same type.  When that is the
     case, the hooks are run in order of ascending sequence.

  *  Use the "fossil hook" command to create, edit, and delete hooks.

  *  Use the "fossil hook test" command to test new hooks.

## Hook Scripts

  *  All scripts are expected to run relatively quickly.  If a long-running
     process is started by a hook, it should be run in the background so
     that the original script can return.

  *  The "%F" sequence inside the script is translated into the
     name of the fossil executable.

  *  The "%R" sequence in the script is translated into the name of
     the repository.

  *  The "%A" sequence becomes the name of an auxiliary input file,
     the meaning of which depends on the hook type.  The auxiliary filename
     might be an empty string.  Take care to use appropriate quoting!

## Disabled Hooks

  *  Hooks with type "disabled" never run.  They are a place-holder for
     scripts that might be converted to some other hook-type later.
     For example, the command "fossil hook edit --type disabled ID"
     can be used to temporarily disable the hook named ID, and then
     "fossil hook edit --type after-receive ID" can be used to reenable
     it later.

## After-Receive Hooks

  *  The "after-receive" hook is run by [the backoffice](./backoffice.md)
     whenever new artifacts are received into the repository.  The artifacts
     have already been committed and so there is nothing that the
     after-receive hook can do to block them.

  *  The after-receive hooks are intended to be run on a server to start
     up a background testing or CI process.  But they can also be run
     on the client side.  The key point is that after-receive hooks are
     invoked by backoffice, so backoffice must be running in order to
     fire after-receive hooks.

  *  The exit code from the after-receive script is ignored.

  *  The standard input to the after-receive hook is a list of
     new artifacts, one per line.  The first token on each line is the
     hash of the new artifact.  After the hash is a human-readable text
     description of what the artifact represents.

  *  Sometimes the same artifact can represent two or more things.
     For example, the same artifact might represent two or more files
     in the check-out (assuming the files hold identical content).  In
     that case, the text description that is input to the after-receive
     hook only shows one of the possible uses for the artifact.

  *  If two or more pushes occur against a repository at about the same
     time, then the set of artifacts added by both pushes might be
     combined into a single after-receive callback.

  *  Fossil holds a write transaction on the repository while the
     after-receive hook is running.  If the script needs to access the
     database, then the database will need to be in WAL mode so that
     readers can co-exist with the writer.  Or the script might just
     launch a background process that waits until the hook script finishes
     and the transaction commits before it tries to access the repository
     database.

  *  A push might not deliver all of the artifacts for a checkin.  If
     Fossil knows that a /xfer HTTP request is incomplete, it will defer
     running the after-receive push for 60 seconds, or until a complete
     /xfer request is received.  This helps to prevent after-receive hooks
     from running when incomplete checkins exist in the repository, but
     it does not provide hard guarantees, as there is no way to do that
     in a distributed system.

  *  The list of artifacts delivered to standard input of the
     after-receive hook will not contain more than 24-hours worth
     of artifacts.  If the backoffice has been shut down for a while
     such that after-receive hooks have not been running, and more
     than 24-hours of changes have accumulated since the last run
     of an after-receive hook, then only the most recent 24-hours
     is included in the input.

## Before-Commit Hooks

  *  Before-commit hooks run during the "fossil commit" command before
     the user is prompted for the check-in comment.  Fossil holds
     a write-transaction on the repository when the before-commit
     hook is running, so the repository needs to be in WAL mode if the
     script needs to access the repository.

  *  The %A substitution is the name of a "commit description file" that
     shows the details of the commit in progress.  To see what a
     "commit description file" looks like, set a before-commit hook
     with a command of "cat %Q" and then run a sample commit with
     the --dry-run option.

  *  If any before-commit hook returns a non-zero exit code, then
     the commit is abandoned.  All
     before-commit hooks must exit(0) in order for the commit to
     proceed.

  *  The --no-validate flag to the "fossil commit" command prevents any
     before-commit hooks from running.

  *  The --trace flag to the "fossil commit" command shows each
     before-commit hook as it is run.

  *  If a before-commit hook fails, it should print an error message
     on standard output or standard error.  Otherwise, the user won't
     know what went wrong, because Fossil won't tell them.

  *  Nothing is written to standard input of the before-commit hook.
     The information transmitted to the before-commit hook is contained
     in the "%A" auxiliary file.  The before-commit hook must open and
     read that file if it wants access to the commit information.

## Commit-Msg Hooks

  *  Commit-msg hooks are not yet implemented.

  *  The commit-msg hooks run during "fossil commit" after the check-in
     message has been entered by the user.  The "%A" argument to the
     commit-msg hook is the text of the commit message.  The intent
     of the commit-msg hook is to validate the text of the commit
     message to (for example) check for typos or ensure that it
     conforms to standards.

  *  If any commit-msg hook returns a non-zero exit code, then
     the commit is abandoned.  All
     commit-msg hooks must exit(0) in order for the commit to
     proceed.

  *  Commit-msg hooks are advisory only.  Each developer is in total
     control of the local repository and can easily bypass the hooks
     to cause a non-conforming checkin to be committed.
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   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Image Format vs Fossil Repository Size\n",
    "\n",
    "## Prerequisites\n",
    "\n",
    "This notebook was originally developed with standalone [JupyterLab] and Python 2 but was later moved to JupyterLab under [Anaconda] with Python 3. Backporting to Python 2 may require manual adjustment. Getting it running under stock JupyterLab or plain-old-Jupyter should be straightforward for one familiar with the tools. We will assume you're following in my footsteps, using Anaconda.\n",
    "\n",
    "One of the reasons we switched to Anaconda is that it comes with all but one of this notebook's prerequisites, that last remaining one of which you install so:\n",
    "\n",
    "    $ pip install wand\n",
    "\n",
    "That should be done in a shell where \"`pip`\" is the version that came with Anaconda. Otherwise, the package will likely end up in some *other* Python package tree, which Anaconda's Python kernel may not be smart enough to find on its own.\n",
    "\n",
    "Note that you do *not* use `conda` for this: as of this writing, [Wand] is not available in a form that installs via `conda`.\n",
    "\n",
    "This notebook was written and tested on a macOS system where `/tmp` exists. Other platforms may require adjustments to the scripts below.\n",
    "\n",
    "[Anaconda]:   https://www.anaconda.com/distribution/\n",
    "[JupyterLab]: https://github.com/jupyterlab/\n",
    "[Wand]:       http://wand-py.org/\n",
    "\n",
    "\n",
    "## Running\n",
    "\n",
    "The next cell generates the test repositories. This takes about 3 seconds to run on my machine. If you have to uncomment the \"`sleep`\" call in the inner loop, this will go up to about 45 seconds.\n",
    "\n",
    "The next cell produces the bar chart from the collected data, all but instantaneously.\n",
    "\n",
    "This split allows you to generate the expensive experimental data in a single pass, then play as many games as you like with the generated data.\n",
    "\n",
    "\n",
    "## Discussion\n",
    "\n",
    "That is kept in [a separate document](image-format-vs-repo-size.md) so we can share that document with Fossil's Markdown renderer."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Created test directory /tmp/image-format-vs-repo-size\n",
      "Created ../test-jpeg.fossil for format JPEG.\n",
      "Created ../test-bmp.fossil for format BMP.\n",
      "Created ../test-tiff.fossil for format TIFF.\n",
      "Created ../test-png.fossil for format PNG.\n",
      "Experiment completed in 3.0627901554107666 seconds.\n"
     ]
    }
   ],
   "source": [
    "import os\n",
    "import random\n",
    "import subprocess\n",
    "import time\n",
    "\n",
    "from wand.color import Color\n",
    "from wand.drawing import Drawing\n",
    "from wand.image import Image\n",
    "\n",
    "import pandas as pd\n",
    "\n",
    "size = 256\n",
    "iterations = 10\n",
    "start = time.time()\n",
    "repo_sizes = []\n",
    "fossil = '/usr/local/bin/fossil'\n",
    "\n",
    "if not os.path.isfile(fossil): raise RuntimeError(\"No such executable \" + fossil)\n",
    "if not os.access(fossil, os.X_OK): raise RuntimeError(\"Cannot execute \" + fossil)\n",
    "\n",
    "tdir = os.path.join('/tmp', 'image-format-vs-repo-size')\n",
    "if not os.path.isdir(tdir): os.mkdir(tdir, 0o700)\n",
    "print(\"Created test directory \" + tdir)\n",
    "    \n",
    "formats = ['JPEG', 'BMP', 'TIFF', 'PNG']\n",
    "for f in formats:\n",
    "    ext = f.lower()\n",
    "    wdir = os.path.join(tdir, 'work-' + ext)\n",
    "    if not os.path.isdir(wdir): os.mkdir(wdir, 0o700)\n",
    "    os.chdir(wdir)\n",
    "    repo = '../test-' + ext + '.fossil'\n",
    "    ifn = 'test.' + ext\n",
    "    ipath = os.path.join(wdir, ifn)\n",
    "    rs = []\n",
    "    \n",
    "    def add_repo_size():\n",
    "        rs.append(os.path.getsize(repo) / 1024.0 / 1024.0)\n",
    "        \n",
    "    def set_repo_page_size(n):\n",
    "        subprocess.run([\n",
    "            fossil,\n",
    "            'rebuild',\n",
    "            '--compress',\n",
    "            '--pagesize',\n",
    "            str(n),\n",
    "            '--vacuum'\n",
    "        ])\n",
    "\n",
    "    try:\n",
    "        # Create test repo\n",
    "        subprocess.run([fossil, 'init', repo])\n",
    "        subprocess.run([fossil, 'open', repo])\n",
    "        subprocess.run([fossil, 'set', 'binary-glob', \"*.{0}\".format(ext)])\n",
    "        set_repo_page_size(512)    # minimum\n",
    "        add_repo_size()\n",
    "        set_repo_page_size(8192)   # default\n",
    "        print(\"Created \" + repo + \" for format \" + f + \".\")\n",
    "\n",
    "        # Create test image and add it to the repo\n",
    "        img = Image(width = size, height = size, depth = 8,\n",
    "                    background = 'white')\n",
    "        img.alpha_channel = 'remove'\n",
    "        img.evaluate('gaussiannoise', 1.0)\n",
    "        img.save(filename = ipath)\n",
    "        subprocess.run([fossil, 'add', ifn])\n",
    "        subprocess.run([fossil, 'ci', '-m', 'initial'])\n",
    "        #print(\"Added initial \" + f + \" image.\")\n",
    "        add_repo_size()\n",
    "\n",
    "        # Change a random pixel to a random RGB value and check it in\n",
    "        # $iterations times.\n",
    "        for i in range(iterations - 1):\n",
    "            with Drawing() as draw:\n",
    "                x = random.randint(0, size - 1)\n",
    "                y = random.randint(0, size - 1)\n",
    "\n",
    "                r = random.randint(0, 255)\n",
    "                g = random.randint(0, 255)\n",
    "                b = random.randint(0, 255)\n",
    "                \n",
    "                draw.fill_color = Color('rgb({0},{1},{2})'.format(\n",
    "                    r, g, b\n",
    "                ))\n",
    "                draw.color(x, y, 'point')\n",
    "                draw(img)\n",
    "                img.save(filename = ipath)\n",
    "                \n",
    "                # You might need to uncomment the next line if you find that\n",
    "                # the repo size doesn't change as expected.  In some versions\n",
    "                # of Wand (or is it the ImageMagick underneath?) we have seen\n",
    "                # what appear to be asynchronous saves, with a zero-length file\n",
    "                # here if you don't wait for the save to complete.\n",
    "                #time.sleep(1.0)\n",
    "  \n",
    "                subprocess.run([fossil, 'ci', '-m', '\"change {0} step {1}'.format(\n",
    "                    f, i\n",
    "                )])\n",
    "                add_repo_size()\n",
    "                \n",
    "        # Repo complete for this format\n",
    "        repo_sizes.append(pd.Series(rs, name=f))\n",
    "\n",
    "    finally:\n",
    "        if os.path.exists(ipath): os.remove(ipath)\n",
    "        if os.path.exists(tdir):\n",
    "            if os.path.isfile(repo):\n",
    "                subprocess.run([fossil, 'close', '-f'])\n",
    "                os.unlink(repo)\n",
    "            os.chdir(tdir);\n",
    "            os.rmdir(wdir)\n",
    "        if os.path.exists(repo): os.remove(repo)\n",
    "            \n",
    "print(\"Experiment completed in \" + str(time.time() - start) + \" seconds.\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
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       "L 55.421875 11.921875 \n",
       "L 55.421875 72.90625 \n",
       "L 64.984375 72.90625 \n",
       "L 64.984375 0 \n",
       "L 51.703125 0 \n",
       "L 19.390625 60.984375 \n",
       "L 19.390625 0 \n",
       "L 9.8125 0 \n",
       "z\n",
       "\" id=\"DejaVuSans-78\"/>\n",
       "     </defs>\n",
       "     <g transform=\"translate(80.78125 67.832812)scale(0.1 -0.1)\">\n",
       "      <use xlink:href=\"#DejaVuSans-80\"/>\n",
       "      <use x=\"60.302734\" xlink:href=\"#DejaVuSans-78\"/>\n",
       "      <use x=\"135.107422\" xlink:href=\"#DejaVuSans-71\"/>\n",
       "     </g>\n",
       "    </g>\n",
       "   </g>\n",
       "  </g>\n",
       " </g>\n",
       " <defs>\n",
       "  <clipPath id=\"p70301a0bed\">\n",
       "   <rect height=\"217.44\" width=\"334.8\" x=\"43.78125\" y=\"7.2\"/>\n",
       "  </clipPath>\n",
       " </defs>\n",
       "</svg>\n"
      ],
      "text/plain": [
       "<Figure size 432x288 with 1 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "%config InlineBackend.figure_formats = ['svg']\n",
    "\n",
    "import matplotlib as mpl\n",
    "import matplotlib.pyplot as plt\n",
    "import pandas as pd\n",
    "\n",
    "os.chdir(tdir)\n",
    "\n",
    "# Merge per-format test data into a single DataFrame without the first\n",
    "# first row, being the boring initial empty repo state.\n",
    "data = pd.concat(repo_sizes, axis=1).drop(range(1))\n",
    "\n",
    "mpl.rcParams['figure.figsize'] = (6, 4)\n",
    "ax = data.plot(kind = 'bar', colormap = 'coolwarm',\n",
    "          grid = False, width = 0.8,\n",
    "          edgecolor = 'white', linewidth = 2)\n",
    "ax.axes.set_xlabel('Checkin index')\n",
    "ax.axes.set_ylabel('Repo size (MiB)')\n",
    "plt.savefig('image-format-vs-repo-size.svg', transparent=True)\n",
    "plt.show()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.6"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 4
}
Added www/image-format-vs-repo-size.md.














































































































































































































































































































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# Image Format vs Fossil Repo Size

## The Problem

Fossil has a [delta compression][dc] feature which removes redundant
information from a file relative to its parent on check-in.[^delta-prgs]
That delta is then [zlib][zl]-compressed before being stored
in the Fossil repository database file.

Storing pre-compressed data files in a Fossil repository defeats both of
these space-saving measures:

1.  Binary data compression algorithms turn the file data into
    pseudorandom noise.[^prn]
    
    Typical data compression algorithms are not [hash functions][hf],
    where the goal is that a change to each bit in the input has a
    statistically even chance of changing every bit in the output, but
    because they do approach that pathological condition, pre-compressed
    data tends to defeat Fossil’s delta compression algorithm, there
    being so little correlation between two different outputs from the
    binary data compression algorithm.

2.  An ideal lossless binary data compression algorithm cannot be
    applied more than once to make the data even smaller, since random
    noise is incompressible.  The consequence for our purposes here is
    that pre-compressed data doesn’t benefit from Fossil’s zlib
    compression.

You might then ask, what does it matter if the space savings comes from
the application file format (e.g. JPEG, DOCX, Zip, etc.) or from Fossil
itself? It really doesn’t, as far as point 2 above goes, but point 1
causes the Fossil repository to balloon out of proportion to the size of
the input data change on each checkin. This article will illustrate that
problem, quantify it, and give a solution to it.

[dc]:  ./delta_format.wiki
[hf]:  https://en.wikipedia.org/wiki/Hash_function
[zl]:  http://www.zlib.net/


## <a id="formats"></a>Affected File Formats

In this article’s core experiment, we use 2D image file formats, but
this article’s advice also applies to many other file types. For just a
few examples out of what must be thousands:

*   **Microsoft Office**: The [OOXML document format][oox] used from
    Office 2003 onward (`.docx`, `.xlsx`, `.pptx`, etc.) are Zip files
    containing an XML document file and several collateral files.

*   **Libre Office**: For the purposes of this article, its
    [OpenDocument Format][odf] is designed the same basic way as OOXML.

*   **Java**: A Java [`.jar` file][jcl] is a Zip file containing JVM
    `.class` files, manifest files, and more.

*   **Windows Installer:** An [`*.msi` file][wi] is a proprietary
    database format that contains, among other things, [Microsoft
    Cabinet][cab]-compressed files, which in turn may hold Windows
    executables, which [may themselves be compressed][exc].

*   **SVG, PDF, TIFF, etc.**: Many file formats are available in both
    compressed and uncompressed forms. You should use the uncompressed
    form with Fossil wherever practical, as we will show below.


[cab]: https://en.wikipedia.org/wiki/Cabinet_(file_format)
[exc]: https://en.wikipedia.org/wiki/Executable_compression
[jcl]: https://en.wikipedia.org/wiki/Java_(programming_language)
[odf]: https://en.wikipedia.org/wiki/OpenDocument
[oox]: https://en.wikipedia.org/wiki/Office_Open_XML
[wi]:  https://en.wikipedia.org/wiki/Windows_Installer



## <a id="demo"></a>Demonstration

The companion `image-format-vs-repo-size.ipynb` file ([download][nbd],
[preview][nbp]) is a [JupyterLab][jl] notebook implementing the following
experiment:

1.  Create a new minimum-size Fossil repository. Save this initial size.

2.  Use [ImageMagick][im] via [Wand][wp] to generate a JPEG file of a
    particular size — currently 256 px² — filled with Gaussian noise to
    make data compression more difficult than with a solid-color image.

3.  Check that image into the new Fossil repo, and remember that size.

4.  Change a random pixel in the image to a random RGB value, save that
    image, check it in, and remember the new Fossil repo size.

5.  Iterate on step 4 some number of times — currently 10 — and remember
    the Fossil repo size at each step.

6.  Repeat the above steps for BMP, PNG, and TIFF.[^tiff-cmp]

7.  Create a bar chart showing how the Fossil repository size changes
    with each checkin.

We chose to use JupyterLab for this because it makes it easy for you to
modify the notebook to try different things.  Want to see how the
results change with a different image size?  Easy, change the `size`
value in the second cell of the notebook.  Want to try more image
formats?  You can put anything ImageMagick can recognize into the
`formats` list. Want to find the break-even point for images like those
in your own repository?  Easily done with a small amount of code.

[im]:  https://www.imagemagick.org/
[jl]:  https://jupyter.org/
[nbd]: ./image-format-vs-repo-size.ipynb
[nbp]: https://nbviewer.jupyter.org/urls/fossil-scm.org/fossil/doc/trunk/www/image-format-vs-repo-size.ipynb
[wp]:  http://wand-py.org/


## <a id="results"></a>Results

Running the notebook gives a bar chart something like[^variance] this:

![results bar chart](./image-format-vs-repo-size.svg)

There are a few key things we want to draw your attention to in that
chart:

*   BMP and uncompressed TIFF are nearly identical in size for all
    checkins, and the repository growth rate is negligible past the
    first commit.[^size-jump] We owe this economy to Fossil’s delta compression
    feature: it is encoding each of those single-pixel changes in a very
    small amount of repository space.

*   The JPEG and PNG bars increase by large amounts on most checkins
    even though each checkin *also* encodes only a *single-pixel change*.

*   The size of the first checkin in the BMP and TIFF cases is roughly
    the same as that for the PNG case, because both PNG and Fossil use
    the zlib binary data compression algorithm. This shows that for
    repos where the image files are committed only once, there is
    virtually no penalty to using BMP or TIFF over PNG. The file sizes
    likely differ only because of differences in zlib settings between
    the cases.

*   Because JPEG’s lossy nature allows it to start smaller and have
    smaller size increases than PNG, the crossover point with
    BMP/TIFF isn’t until 7-9 checkins in typical runs of this [Monte
    Carlo experiment][mce].  Given a choice among these four file
    formats and a willingness to use lossy image compression, a rational
    tradeoff is to choose JPEG for repositories where each image will
    change fewer than that number of times.


[mce]: https://en.wikipedia.org/wiki/Monte_Carlo_method


## <a id="makefile"></a>Automated Recompression

Since programs that produce and consume binary-compressed data files
often make it either difficult or impossible to work with the
uncompressed form, we want an automated method for producing the
uncompressed form to make Fossil happy while still having the compressed
form to keep our content creation applications happy.  This `Makefile`
should[^makefile] do that for BMP, PNG, SVG, and XLSX files:

    .SUFFIXES: .bmp .png .svg .svgz

    .svgz.svg:
        gzip -dc < $< > $@

    .svg.svgz:
        gzip -9c < $< > $@

    .bmp.png:
        convert -quality 95 $< $@

    .png.bmp:
        convert $< $@

    SS_FILES := $(wildcard spreadsheet/*)


    all: $(SS_FILES) illus.svg image.bmp doc-big.pdf

    reconstitute: illus.svgz image.png
        ( cd spreadsheet ; zip -9 ../spreadsheet.xlsx) * )
        qpdf doc-big.pdf doc-small.pdf


    $(SS_FILES): spreadsheet.xlsx
        unzip $@ -d $<

    doc-big.pdf: doc-small.pdf
        qpdf --stream-data=uncompress $@ $<

This `Makefile` allows you to treat the compressed version as the
process input, but to actually check in only the changes against the
uncompressed version by typing “`make`†before “`fossil ci`â€. This is
not actually an extra step in practice, since if you’ve got a
`Makefile`-based project, you should be building — and testing — it
before checking each change in anyway!

Because this technique is based on dependency rules, only the necessary
files are generated on each `make` command.

You only have to run “`make reconstitute`†*once* after opening a fresh
Fossil checkout to produce those compressed sources. After that, you
work with the compressed files in your content creation programs. Your
build system might include some kind of bootstrapping or
auto-configuration step that you could attach this to, so that it
doesn’t need to be run by hand.

This `Makefile` illustrates two primary strategies:


### Input and Output File Formats Differ by Extension

In the case of SVG and the bitmap image formats, the file name extension
differs between the cases, so we can use `make` suffix rules to get the
behavior we want.  The top half of the `Makefile` just tells `make` how
to map from `*.svg` to `*.svgz` and vice versa, and the same for `*.bmp`
to/from `*.png`.


### Input and Output Use the Same Extension

We don’t have that luxury for Excel and PDF files, each for a different
reason:

*   **Excel:** Excel has no way to work with the unpacked Zip file
    contents at all, so we have to unpack it into a subdirectory, which
    is what we check into Fossil.  On making a fresh Fossil checkout, we
    have to pack that subdirectory’s contents back up into an `*.xlsx`
    file with “`make reconstitute`†so we can edit it with Excel again.

*   **PDF:** All PDF readers can display an uncompressed PDF file, but
    many PDF-*producing* programs have no option for uncompressed
    output.  Since the file name extension is the same either way, we
    treat the compressed PDF as the source to the process, yielding an
    automatically-uncompressed PDF for the benefit of Fossil.  Unlike
    with the Excel case, there is no simple “file base name to directory
    name†mapping, so we just created the `-big` to `-small` name scheme
    here.


[^delta-prgs]:
    This problem is not Fossil-specific.  Several other programs also do
    delta compression, so they’ll also be affected by this problem:
    [rsync][rs], [Unison][us], [Git][git], etc. You should take this
    article’s advice when using all such programs, not just Fossil.
    When using file copying and synchronization programs *without* delta
    compression, on the other hand, it’s best to use the most
    highly-compressed file format you can tolerate, since they copy the
    whole file any time any bit of it changes.

[^prn]:
    In fact, a good way to gauge the effectiveness of a given
    compression scheme is to run its output through the same sort of
    tests we use to gauge how “random†a given [PRNG][prng] is.  Another
    way to look at it is that if there is a discernible pattern in the
    output of a compression scheme, that constitutes *information* (in
    [the technical sense of that word][ith]) that could be further
    compressed.

[^tiff-cmp]:
    We're using *uncompressed* TIFF here, not [LZW][lzw]- or
    Zip-compressed TIFF, either of which would give similar results to
    PNG, which is always zlib-compressed.

[^variance]:
    The raw data changes somewhat from one run to the next due to the
    use of random noise in the image to make the zlib/PNG compression
    more difficult, and the random pixel changes.  Those test design
    choices make this a [Monte Carlo experiment][mce].  We’ve found that
    the overall character of the results doesn’t change from one run to
    the next.

[^size-jump]:
    It’s not clear to me why there is a one-time jump in size for BMP
    and TIFF past the first commit. I suspect it is due to the SQLite
    indices being initialized for the first time.
    Page size inflation might have something to do with it as well,
    though we tried to control that by rebuilding the initial DB with a
    minimal page size. If you re-run the program often enough, you will
    sometimes see the BMP or TIFF bar jump higher than the other, again
    likely due to one of the repos crossing a page boundary.
    Another curious artifact in the data is that the BMP is slightly
    larger than for the TIFF. This goes against expectation because a
    low-tech format like BMP should have a small edge in this test
    because TIFF metadata includes the option for multiple timestamps,
    UUIDs, etc., which bloat the checkin size by creating many small
    deltas.

[^makefile]:
    The `Makefile` above is not battle-tested.  Please report bugs and
    needed extensions [on the forum][for].

[for]:  https://fossil-scm.org/forum/forumpost/15e677f2c8
[git]:  https://git-scm.com/
[ith]:  https://en.wikipedia.org/wiki/Information_theory
[lzw]:  https://en.wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch
[prng]: https://en.wikipedia.org/wiki/Pseudorandom_number_generator
[rs]:   https://rsync.samba.org/
[us]:   http://www.cis.upenn.edu/~bcpierce/unison/
Added www/image-format-vs-repo-size.svg.
































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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<title>Fossil Home Page</title>

<title>A Coherent Software Configuration Management System</title>

<p align="center">
<font size="5">
<b>Fossil:</b>
<i>Simple, high-reliability, distributed software configuration management</i>
</font>
</p>

<h3>What Is It?</h3>

<h3>Why Use Fossil?</h3>

<div class="nomargins" style='float:right;border:2px solid #446979;padding:0 15px 10px 0;margin:0 50px 0 10px'>
<table border="0" cellpadding="1" bgcolor="#558195" align="right" hspace="10">
<tr><td>
<table border="0" cellpadding="10" bgcolor="white">
<tr><td>
<h3>Quick Links</h3>
<ul>
<li> [/uv/download.html | Download]
<li> [./quickstart.wiki | Quick Start]
<li> [http://www.fossil-scm.org/download.html | Download]
<li> [./build.wiki | Install]
<li> [https://fossil-scm.org/forum | Support/Forum ]
<li> [./hints.wiki | Tips &amp; Hints]
<li> [./changes.wiki | Change Log]
<li> [../COPYRIGHT-GPL2.txt | License]
<li> [/timeline | Recent changes]
<li> [./faq.wiki | FAQ]
<li> Mailing list
<li> [../COPYRIGHT-BSD2.txt | License]
<li> [./userlinks.wiki | User Links]
<li> [./hacker-howto.wiki | Hacker How-To]
<li> [./fossil-v-git.wiki | Fossil vs. Git]
     <ul>
     <li> [http://lists.fossil-scm.org:8080/cgi-bin/mailman/listinfo/fossil-users | sign-up]
<li> [./permutedindex.html | Doc Index]
     <li> [http://www.mail-archive.com/fossil-users@lists.fossil-scm.org | archives]
     <ul>
</ul>
</td></tr>
<tr><td>
<center><img src="fossil3.gif"></center>
<p style="text-align:center"><img src="fossil3.gif" alt="Fossil logo"></p>
</td></tr>
</table>
</div>
</table>

There are plenty of open-source version control systems available on the
internet these days. What makes Fossil worthy of attention?
Fossil is a simple, high-reliability, distributed
[https://en.wikipedia.org/wiki/Software_configuration_management | SCM]
system with these advanced features:

  1.  <b>Bug Tracking And Wiki</b> -
  1.  <b>Project Management</b> —
      In addition to doing [./concepts.wiki | distributed version control]
      like Git and Mercurial,
      Fossil also supports [./bugtheory.wiki | distributed bug tracking] and
      [./wikitheory.wiki | distributed wiki] all in a single
      integrated package.
      Fossil also supports [./bugtheory.wiki | bug tracking],
      [./wikitheory.wiki | wiki], [./forum.wiki | forum],
      [./alerts.md|email alerts], [./chat.md | chat], and
      [./event.wiki | technotes].

  2.  <b>Web Interface</b> - 
      Fossil has a built-in and easy-to-use [./webui.wiki | web interface]
      that simplifies project tracking and promotes situational awareness.
      Simply type "fossil&nbsp;ui" from within any check-out and Fossil
      automatically opens your web browser in a page that gives detailed
      history and status information on that project.
  2.  <b>Built-in Web Interface</b> —
      Fossil has a built-in, [/skins | themeable], [./serverext.wiki | extensible],
      and intuitive [./webui.wiki | web interface]
      with a rich variety of information pages
      ([./webpage-ex.md|examples]) promoting situational awareness.
      <br><br>
      This entire website is just a running instance of Fossil.
      The pages you see here are all [./wikitheory.wiki | wiki] or
      [./embeddeddoc.wiki | embedded documentation] or (in the case of
      the [/uv/download.html|download] page)
      [./unvers.wiki | unversioned files].
      When you clone Fossil from one of its
      [./selfhost.wiki | self-hosting repositories],
      you get more than just source code — you get this entire website.

  3.  <b>All-in-one</b> —
      Fossil is a single self-contained, stand-alone executable.
      To install, simply download a
      [/uv/download.html | precompiled binary]
      for Linux, Mac, or Windows and put it on your $PATH.
      [./build.wiki | Easy-to-compile source code] is also available.


  4.  <b>Self-host Friendly</b> — Stand up a project website
      in minutes using [./server/ | a variety of techniques].
      Fossil is CPU and memory efficient. Most projects can be
      hosted comfortably on a $5/month VPS or a Raspberry Pi.
      You can also set up an automatic
      [./mirrortogithub.md | GitHub mirror].

  5.  <b>Simple Networking</b> —
      Fossil uses ordinary HTTPS (or SSH if you prefer)
      for network communications, so it works fine from behind
      firewalls and [./quickstart.wiki#proxy|proxies].
      The protocol is
      [./stats.wiki | bandwidth efficient] to the point that Fossil can be
      used comfortably over dial-up, weak 3G, or airliner Wifi.

  3.  <b>Autosync</b> -
  6.  <b>Autosync</b> —
      Fossil supports [./concepts.wiki#workflow | "autosync" mode]
      which helps to keep projects moving
      forward by reducing the amount of needless 
      forward by reducing the amount of needless
      [./branching.wiki | forking and merging] often
      associated with distributed projects.

  4.  <b>Self-Contained</b> -
      Fossil is a single stand-alone executable that contains everything
      needed to do configuration management.
      Installation is trivial: simply download a 
      <a href="http://www.fossil-scm.org/download.html">precompiled binary</a>
      for Linux, Mac, or Windows and put it on your $PATH.
      [./build.wiki | Easy-to-compile source code] is available for
      users on other platforms.  Fossil sources are also mostly self-contained,
      requiring only the "zlib" library and the standard C library to build.

  5.  <b>Simple Networking</b> -
      Fossil uses plain old HTTP (with
      [./quickstart.wiki#proxy | proxy support])
      for all network communications, meaning that it works fine from behind
      restrictive firewalls.  The protocol is
      [./stats.wiki | bandwidth efficient] to the point that Fossil can be
      used comfortably over a dial-up internet connection.

  6.  <b>CGI Enabled</b> -
      No server is required to use fossil.  But a
      server does make collaboration easier.  Fossil supports three different
      yet simple [./quickstart.wiki#serversetup | server configurations].
      The most popular is a 2-line CGI script.  This is the approach
      used by the [./selfhost.wiki | self-hosting fossil repositories].

  7.  <b>Robust &amp; Reliable</b> -
      Fossil stores content in an SQLite database so that transactions are
      atomic even if interrupted by a power loss or system crash.  Furthermore,
      automatic [./selfcheck.wiki | self-checks] verify that all aspects of
      the repository are consistent prior to each commit.  In over two years
      of operation, no work has ever been lost after having been committed to
      a Fossil repository.
  7.  <b>Robust &amp; Reliable</b> —
      Fossil stores content using an [./fileformat.wiki | enduring file format]
      in an SQLite database so that transactions are
      atomic even if interrupted by a power loss or system crash.
      Automatic [./selfcheck.wiki | self-checks] verify that all aspects of
      the repository are consistent prior to each commit.

  8.  <b>Free and Open-Source</b> — [../COPYRIGHT-BSD2.txt|2-clause BSD license].

<hr>
<h3>Latest Release: 2.25 ([/timeline?c=version-2.25|2024-11-06])</h3>

  *  [/uv/download.html|Download]
  *  [./changes.wiki#v2_25|Change Summary]
  *  [/timeline?p=version-2.25&bt=version-2.24&y=ci|Check-ins in version 2.25]
  *  [/timeline?df=version-2.25&y=ci|Check-ins derived from the 2.25 release]
  *  [/timeline?t=release|Timeline of all past releases]

<hr>
<h3>Links For Fossil Users:</h3>
<h3>Quick Start</h3>

  *  [./reviews.wiki | Testimonials] from satisfied fossil users.
  1.  [/uv/download.html|Download] or install using a package manager or
  *  [./faq.wiki | FAQ]
  *  The [./concepts.wiki | concepts] behind fossil
  *  [./quickstart.wiki | Quick Start] guide to using fossil
  *  [./qandc.wiki | Questions &amp; Criticisms] directed at fossil.
  *  [./build.wiki | Building And Installing]
  *  Fossil supports [./embeddeddoc.wiki | embedded documentation]
      [./build.wiki|compile from sources].
  2.  <tt>fossil init</tt> <i>REPOSITORY-DIR/new-repository</i>
     that is versioned along with project source code.
  *  Fossil uses an [./fileformat.wiki | enduring file format] that is 
     designed to be readable, searchable, and extensible by people
     not yet born.
  *  A tutorial on [./branching.wiki | branching], what it means and how
     to do it using fossil.
  3.  <tt>fossil open</tt> <i>REPOSITORY-DIR/new-repository</i>
  *  The [./selfcheck.wiki | automatic self-check] mechanism
     helps insure project integrity.
  *  Fossil contains a [./wikitheory.wiki | built-in wiki].
  4.  <tt>fossil add</tt> <i>files-or-directories</i>
  *  There is a
    [http://lists.fossil-scm.org:8080/cgi-bin/mailman/listinfo/fossil-users | mailing list] (with publically readable
     [http://www.mail-archive.com/fossil-users@lists.fossil-scm.org | archives]
     available for discussing fossil issues.
  5.  <tt>fossil commit -m</tt> "<i>commit message</i>"
  *  [./stats.wiki | Performance statistics] taken from real-world projects
     hosted on fossil.
  6.  <tt>fossil ui</tt>
  *  How to [./shunning.wiki | delete content] from a fossil repository.
  *  How Fossil does [./password.wiki | password management].
  *  Some (unfinished but expanding) extended
      [./reference.wiki | reference documentation] for the fossil command line.
  *  Documentation on the
     [http://www.sqliteconcepts.org/THManual.pdf | TH1 Script Language] used
     to configure the ticketing subsystem.
  *  How to [./server.wiki | set up a server] for your repository.
  *  Customizing the [./custom_ticket.wiki | ticket system].

  7.  Repeat steps 4, 5, and 6, in any order, as necessary.
<h3>Links For Fossil Developer:</h3>

      See the [./quickstart.wiki|Quick Start Guide] for more detail.
  *  [./theory1.wiki | Thoughts On The Design Of Fossil].
  *  [./pop.wiki | Principles Of Operation]
  *  The [./fileformat.wiki | file format] used by every content
     file stored in the repository.
  *  The [./delta_format.wiki | format of deltas] used to
     efficiently store changes between file revisions.
  *  The [./delta_encoder_algorithm.wiki | encoder algorithm] used to
     efficiently generate deltas.
  *  The [./sync.wiki | synchronization protocol].
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<title>Import And Export</title>

Fossil has the ability to import and export repositories from and to
[http://git-scm.com/ | Git].  And since most other version control
systems will also import/export from Git, that means that you can
import/export a Fossil repository to most version control systems using
Git as an intermediary.

<h2>Git → Fossil</h2>

To import a Git repository into Fossil, say something like:

<pre>
cd git-repo
git fast-export --all | fossil import --git new-repo.fossil
</pre>

The 3rd argument to the "fossil import"
command is the name of a new Fossil repository that is created to hold the Git
content.

The --git option is not actually required.  The git-fast-export file format
is currently the only VCS interchange format that Fossil understands.  But
future versions of Fossil might be enhanced to understand other VCS
interchange formats, and so for compatibility, use of the
--git option is recommended.

<a id="fx_git"></a>
Note that in new imports, Fossil defaults to using the email component of the
Git <em>committer</em> (or <em>author</em> if <code>--use-author</code> is
passed) to attribute check-ins in the imported repository. Alternatively, the
[/help?cmd=import | <code>--attribute</code>] option can be passed to have all
commits by a given committer attributed to a desired username. This will create
and populate the new <code>fx_git</code> table in the repository database to
maintain a record of correspondent usernames and email addresses that can be
used in subsequent exports or incremental imports.

<h3>Converting Repositories on Windows</h3>

The above commands work best on proper POSIX systems like Linux, macOS,
and the BSDs, where everything <tt>git</tt> sends is consumed by
<tt>fossil</tt> as soon as it can manage, with both programs working
concurrently.

For some reason, the current version of PowerShell included with Windows
chokes on the conversion when the in-flight repository size exceeds
available memory. We do not know why it buffers the entire stream
emitted by "<tt>git fast-export</tt>" before sending it along to Fossil,
but we've seen the problem recur on multiple machines.

While one workaround is to fall back to <tt>cmd.exe</tt> — which doesn't
seem to be affected by this problem — we instead recommend using
Microsoft's own [https://learn.microsoft.com/en-us/windows/wsl/ | Windows
Subsystem for Linux] or either of the two popular "Git for Windows"
distributions based on MSYS2. They handle pipes the POSIX way, avoiding
any dependency on the amount of data involved.

<h2>Fossil → Git</h2>

To convert a Fossil repository into a Git repository, run commands like
this:

<pre>
git init new-repo
cd new-repo
fossil export --git ../repo.fossil | git fast-import
</pre>

In other words, create a new Git repository, then pipe the output from the
"fossil export --git" command into the "git fast-import" command.

Note that the "fossil export --git" command only exports the versioned files.
Tickets and wiki and events are not exported, since Git does not understand
those concepts.

As with the "import" command, the --git option is not required
since the git-fast-export file format is currently the only VCS interchange
format that Fossil will generate.  However,
future versions of Fossil might add the ability to generate other
VCS interchange formats, and so for compatibility, the use of the --git
option is recommended.

<h2>Mirror A Fossil Repository In Git</h2>

Fossil version 2.9 and later supports a simple mechanism for
doing a Git or
[./mirrortogithub.md|GitHub mirror of a Fossil repository].
See that separate document for details.  Fossil is self-hosting,
but a [https://github.com/drhsqlite/fossil-mirror|GitHub mirror of Fossil]
is available as a proof-of-concept.

<h2>Bidirectional Synchronization</h2>
Fossil also has the ability to synchronize with a Git repository via repeated
imports and/or exports.  To do this, it uses marks files to store a record of
artifacts which are known by both Git and Fossil to exist at a given point in
time.

To illustrate, consider the example of a remote Fossil repository that a
user wants to import into a local Git repository.  First, the user would clone
the remote repository and import it into a new Git repository:

<pre>
fossil clone /path/to/remote/repo.fossil repo.fossil
mkdir repo
cd repo
fossil open ../repo.fossil
mkdir ../repo.git
cd ../repo.git
git init .
fossil export --git --export-marks ../repo/fossil.marks  \
       ../repo.fossil | git fast-import                  \
       --export-marks=../repo/git.marks
</pre>

Once the import has completed, the user would need to <tt>git checkout
trunk</tt>.  At any point after this, new changes can be imported from the
remote Fossil repository:

<pre>
cd ../repo
fossil pull
cd ../repo.git
fossil export --git --import-marks ../repo/fossil.marks  \
       --export-marks ../repo/fossil.marks               \
       ../repo.fossil | git fast-import                  \
       --import-marks=../repo/git.marks                  \
       --export-marks=../repo/git.marks
</pre>

Changes in the Git repository can be exported to the Fossil repository and then
pushed to the remote:

<pre>
git fast-export --import-marks=../repo/git.marks                  \
    --export-marks=../repo/git.marks --all | fossil import --git  \
    --incremental --import-marks ../repo/fossil.marks             \
    --export-marks ../repo/fossil.marks ../repo.fossil
cd ../repo
fossil push
</pre>
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# Interwiki Links

Interwiki links are a short-hand notation for links that target
external wikis or websites.  For example, the following two
hyperlinks mean the same thing (assuming an appropriate [intermap](#intermap)
configuration):

  * [](wikipedia:MediaWiki#Interwiki_links)
  * [](https://en.wikipedia.org/wiki/MediaWiki#Interwiki_links)

Another example:  The Fossil Forum is hosted in a separate repository
from the Fossil source code.  This page is part of the
source code repository.  Interwiki links can be used to more easily
refer to the forum repository:

  * [](forum:d5508c3bf44c6393df09c)
  * [](https://fossil-scm.org/forum/info/d5508c3bf44c6393df09c)

## Advantages Over Full URL Targets

  *  Interwiki links are easier to write.  There is less typing,
     and fewer opportunities to make mistakes.

  *  Interwiki links are easier to read.  With well-chosen
     intermap tags, the links are easier to understand.

  *  Interwiki links continue to work after a domain change on the
     target.  If the target of a link moves to a different domain,
     an interwiki link will continue to work, if the intermap is adjusted,
     but a hard-coded link will be permanently broken.

  *  Interwiki links allow clones to use a different target domain from the
     original repository.

## Details

Fossil supports interwiki links in both the 
[Fossil Wiki](/wiki_rules) and [Markdown](/md_rules) markup
styles. An interwiki link consists of a tag followed by a colon
and the link target:

> <i>Tag</i><b>:</b><i>PageName</i>

The Tag must consist of ASCII alphanumeric characters only - no
punctuation or whitespace or characters greater than U+007A.
The PageName is the link notation on the target wiki.
Three different classes of PageNames are recognized by Fossil:

  1.  <b>Path Links</b> &rarr; the PageName begins with the "/" character
      or is an empty string.

  2.  <b>Hash Links</b> &rarr; the PageName is a hexadecimal number with
      at least four digits.

  3.  <b>Wiki Links</b> &rarr; A PageName that is not a Path or Hash.

The Intermap defines a base URL for each Tag.  Path links are appended
directly to the URL contained in the Intermap.  The Intermap can define
additional text to put in between the base URL and the PageName for
Hash and Wiki links, respectively.

<a id="intermap"></a>
## Intermap

The intermap defines a mapping from interwiki Tags to full URLs.  The
Intermap can be viewed and managed using the [fossil interwiki][iwiki]
command or the [/intermap][imap] webpage.

[iwiki]: /help?cmd=interwiki
[imap]: /intermap

The current intermap for a server is seen on the [/intermap][imap] page
(which is read-only for non-Setup users) and at the bottom of the built-in
[Fossil Wiki rules](/wiki_rules) and [Markdown rules](/md_rules)
documentation pages.

Each intermap entry stores, at a minimum, the base URL for the remote
wiki.  The intermap entry might also store additional path text that
is used for Hash and Wiki links.  If only the base URL is provided,
then the intermap will only allow Path style interwiki links.  The
Hash and Wiki style interwiki links are only allowed if the necessary
extensions are provided in the intermap.


## Disadvantages and Limitations

  *  Configuration is required.  The intermap must be set up correctly
     before interwiki links will work.  This contrasts with ordinary
     links that just work without any configuration.  Cloning a repository
     copies the intermap, but normal syncs do not keep the intermap in
     sync.  Use the "[fossil config pull interwiki][fcfg]" command to
     synchronize the intermap.

  *  The is no backlink tracking.  For ordinary intrawiki links, Fossil keeps
     track of both the source and target, and when displaying targets it
     commonly shows links to that target.  For example, if you mention a
     check-in as part of a comment of another check-in, that new check-in
     shows up in the "References" section of the target check-in.
     ([example](31af805348690958).  In other words, Fossil tracks not just
     "_source&rarr;target_", but it also tracks "_target&rarr;source_".
     But backtracking does not work for interwiki links, since the Fossil
     running on the target has no way of scanning the source text and
     hence has no way of knowing that it is a target of a link from the source.

[fcfg]: /help?cmd=config

## Intermap Storage Details

The intermap is stored in the CONFIG table of the repository database,
in entries with names of the form "<tt>interwiki:</tt><i>Tag</i>".  The
value for each such entry is a JSON string that defines the base URL
and extensions for Hash and Wiki links.

## See Also

  1. [](https://www.mediawiki.org/wiki/Manual:Interwiki)
  2. [](https://duckduckgo.com/?q=interwiki+links&ia=web)
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# Use of JavaScript in Fossil

## Philosophy & Policy

The Fossil development project’s policy is to use JavaScript where it
helps make its web UI better, but to offer graceful fallbacks wherever
practical. The intent is that the UI be usable with JavaScript
entirely disabled. In almost all places where Fossil uses JavaScript,
it is an enhancement to provided functionality, and there is always
another way to accomplish a given end without using JavaScript.

This is not to say that Fossil’s fall-backs for such cases are always as
elegant and functional as a no-JS purist might wish. That is simply
because [the vast majority of web users leave JavaScript unconditionally
enabled](#stats), and of the small minority of those that do not, a
large chunk use some kind of [conditional blocking](#block) instead,
rather than disable JavaScript entirely.
Fossil’s active developers do not deviate from that
norm enough that we have many no-JS purists among us, so the no-JS case
doesn’t get as much attention as some might want. We do [accept code
contributions][cg], and we are philosophically in favor of graceful
fall-backs, so you are welcome to appoint yourself the position of no-JS
czar for the Fossil project!

Evil is in actions, not in objects: we do not believe JavaScript *can*
be evil. It is an active technology, but the actions that matter here
are those of writing the code and checking it into the Fossil project
repository. None of the JavaScript code in Fossil is evil, a fact we
enforce by being careful about who we give check-in rights on the
repository to and by policing what code does get contributed. The Fossil
project does not accept non-trivial outside contributions.

We think it’s better to ask not whether Fossil requires JavaScript but
whether Fossil uses JavaScript *well*, so that [you can decide](#block)
to block or allow Fossil’s use of JavaScript.

The Fossil developers want to see the project thrive, and we achieve
that best by making it usable and friendly to a wider audience than the
minority of static web app purists.  Modern users generally expect a
smoother experience than was available with 1990s style HTTP
POST-and-response `<form>` based interaction. We also increase the set
of potential Fossil developers if we do not restrict them to such
antiquated methods.

JavaScript is not perfect, but it's what we have, so we will use it
where we find it advantageous.

[cg]: ./contribute.wiki


## <a id="debate"></a>Arguments Against JavaScript & Our Rebuttals

There are many common arguments against the use of JavaScript. Rather than
rehash these same arguments on the [forum][ffor], we distill the common
ones we’ve heard before and give our stock answers to them here:

1.  “**It increases the size of the page download.**â€

    The heaviest such pages served by Fossil only have about 15 kB of
    compressed JavaScript. (You have to go out of your way to get Fossil
    to serve uncompressed pages.) This is negligible, even over very
    slow data connections. If you are still somehow on a 56 kbit/sec
    analog telephone modem, this extra script code would download in
    a few seconds.

    Most JavaScript-based Fossil pages use less code than that.

    Atop that, Fossil sends HTTP headers to the browser that allow it
    to perform aggressive caching so that typical page loads will skip
    re-loading this content on subsequent loads. These features are
    currently optional: you must either set the new
    [`fossil server --jsmode bundle` option][fsrv] or the corresponding
    `jsmode` control line
    in your [`fossil cgi`][fcgi] script when setting up your
    [Fossil server][fshome]. That done, Fossil’s JavaScript files will
    load almost instantly from the browser’s cache after the initial
    page load, rather than be re-transferred over the network.

    Between the improved caching and the fact that it’s quicker to
    transfer a partial Ajax page load than reload the entire page, the
    aggregate cost of such pages is typically *lower* than the older
    methods based on HTTP POST with a full server round-trip. You can
    expect to recover the cost of the initial page load in 1-2
    round-trips. If we were to double the amount of JavaScript code in
    Fossil, the payoff time would increase to 2-4 round-trips.

2.  “**JavaScript is slow.**â€

    It *was*, before September 2008. Google's introduction of [their V8
    JavaScript engine][v8] taught the world that JavaScript need not be
    slow. This competitive pressure caused the other common JavaScript
    interpreters to either improve or be replaced by one of the engines
    that did improve to approach V8’s speed.

    Nowadays JavaScript is, as a rule, astoundingly fast. As the world
    continues to move more and more to web-based applications and
    services, JavaScript engine developers have ample motivation to keep
    their engines fast and competitive.

    Ajax partial page updates are faster than
    the no-JS alternative, a full HTTP POST round-trip to submit new
    data to the remote server, retrieve an entire new HTML document,
    and re-render the whole thing client-side.

3.  <a id="3pjs"></a>“**Third-party JavaScript cannot be trusted.**â€

    Fossil does not use any third-party JavaScript libraries, not even
    very common ones like jQuery. Every bit of JavaScript served by the
    stock version of Fossil was written specifically for the Fossil
    project and is stored [in its code repository][fsrc].

    Therefore, if you want to hack on the JavaScript code served by
    Fossil and mechanisms like [skin editing][cskin] don’t suffice for your
    purposes, you can hack on the JavaScript in your local instance
    directly, just as you can hack on its C, SQL, and Tcl code. Fossil
    is free and open source software, under [a single license][2cbsd].

4.  <a id="snoop"></a>“**JavaScript and cookies are used to snoop on web users.**â€

    There is no tracking or other snooping technology in Fossil other than
    that necessary for basic security, such as IP address logging on
    check-ins. (This is in part why we have no [comprehensive user
    statistics](#stats)!)

    Fossil attempts to set two cookies on all web clients: a login session
    cookie and a display preferences cookie. These cookies are restricted to
    the Fossil instance, so even this limited data cannot leak between
    Fossil instances or into other web sites.

5.  “**JavaScript is fundamentally insecure.**â€

    JavaScript is certainly sometimes used for nefarious ends, but if we
    wish to have more features in Fossil, the alternative is to add more
    code to the Fossil binary, [most likely in C][fslpl], a language
    implicated in [over 4× more security vulnerabilities][whmsl].

    Therefore, does it not make sense to place approximately four times
    as much trust in Fossil’s JavaScript code as in its C code?

    The question is not whether JavaScript is itself evil, it is whether
    its *authors* are evil. *Every byte* of JavaScript code used within
    the Fossil UI is:

    *   ...written by the Fossil developers, vetted by their peers.

    *   ...[open source][flic] and [available][fsrc] to be inspected,
        audited, and changed by its users.

    *   ...compiled directly into the `fossil` binary in a
        non-obfuscated form during the build process, so there are no
        third-party servers delivering mysterious, obfuscated JavaScript
        code blobs to the user.

    Local administrators can [modify the repository’s skin][cskin] to
    inject additional JavaScript code into pages served by their Fossil
    server. A typical case is to add a syntax highlighter like
    [Prism.js][pjs] or [highlightjs][hljs] to the local repository. At
    that point, your trust concern is not with Fossil’s use of
    JavaScript, but with your trust in that repository’s administrator.

    Fossil's [default content security policy][dcsp] (CSP)
    prohibits execution of JavaScript code which is delivered from
    anywhere but the Fossil server which delivers the page. A local
    administrator can change this CSP, but again this comes down to a
    matter of trust with the administrator, not with Fossil itself.

6.  “**Cross-browser compatibility is poor.**â€

    It most certainly was in the first decade or so of JavaScript’s
    lifetime, resulting in the creation of powerful libraries like
    jQuery to patch over the incompatibilities. Over time, the need for
    such libraries has dropped as browser vendors have fixed the
    incompatibilities.  Cross-browser JavaScript compatibility issues
    which affect web developers are, by and large, a thing of the past.

7.  “**Fossil UI works fine today without JavaScript. Why break it?**â€

    While this is true today, and we have no philosophical objection to
    it remaining true, we do not intend to limit ourselves to only those
    features that can be created without JavaScript. The mere
    availability of alternatives is not a good justification for holding
    back on notable improvements when they're within easy reach.

    The no-JS case is a [minority position](#stats), so those that want
    Fossil to have no-JS alternatives and graceful fallbacks will need
    to get involved with the development if they want this state of
    affairs to continue.

8.  <a id="stats"></a>“**A large number of users run without JavaScript enabled.**â€
  
    That’s not what web audience measurements say:

    * [What percentage of browsers with javascript disabled?][s1]
    * [How many people are missing out on JavaScript enhancement?][s2]
    * [Just how many web users really disable cookies or JavaScript?][s3]

    Our sense of this data is that only about 0.2% of web users had
    JavaScript disabled while participating in these studies.

    The Fossil user community is not typical of the wider web, but if we
    were able to comprehensively survey our users, we’d expect to find
    an interesting dichotomy. Because Fossil is targeted at software
    developers, who in turn are more likely to be power-users, we’d
    expect to find Fossil users to be more in favor of some amount of
    JavaScript blocking than the average web user. Yet, we’d also expect
    to find that our user base has a disproportionately high number who
    run [powerful conditional blocking plugins](#block) in their
    browsers, rather than block JavaScript entirely. We suspect that
    between these two forces, the number of no-JS purists among Fossil’s
    user base is still a tiny minority.

9.  <a id="block"></a>“**I block JavaScript entirely in my browser. That breaks Fossil.**â€

    First, see our philosophy statements above. Briefly, we intend that
    there always be some other way to get any given result without using
    JavaScript, developer interest willing.

    But second, it doesn’t have to be all-or-nothing. We recommend that
    those interested in blocking problematic uses of JavaScript use
    tools like [NoScript][ns] or [uBlock Origin][ubo] to *selectively*
    block JavaScript so the rest of the web can use the technology
    productively, as it was intended.

    There are doubtless other useful tools of this sort. We recommend
    these two only from our limited experience, not out of any wish to
    exclude other tools.

    The primary difference between these two for our purposes is that
    NoScript lets you select scripts to run on a page on a case-by-case
    basis, whereas uBlock Origin delegates those choices to a group of
    motivated volunteers who maintain allow/block lists to control all
    of this; you can then override UBO’s stock rules as needed.

10. “**My browser doesn’t even *have* a JavaScript interpreter.**â€

    The Fossil open source project has no full-time developers, and only
    a few of these part-timers are responsible for the bulk of the code
    in Fossil. If you want Fossil to support such niche use cases, then
    you will have to [get involved with its development][cg]: it’s
    *your* uncommon itch.

11. <a id="compat"></a>“**Fossil’s JavaScript code isn’t compatible with my browser.**â€

    The Fossil project’s developers aim to remain compatible with
    the largest portions of the client-side browser base. We use only
    standards-defined JavaScript features which are known to work in the
    overwhelmingly vast majority of browsers going back approximately 5
    years, at minimum, as documented by [Can I Use...?][ciu] We avoid use of
    features added to the language more recently or those which are still in
    flux in standards committees.

    We set this threshold based on the amount of time it typically takes for
    new standards to propagate through the installed base.

    As of this writing, this means we are only using features defined in
    [ECMAScript 2015][es2015], colloquially called “JavaScript 6.†That
    is a sufficiently rich standard that it more than suffices for our
    purposes, and it is [widely deployed][es6dep]. The biggest single
    outlier remaining is MSIE 11, and [even Microsoft is moving their
    own products off of it][ie11x].

[2cbsd]:  https://fossil-scm.org/home/doc/trunk/COPYRIGHT-BSD2.txt
[ciu]:    https://caniuse.com/
[cskin]:  ./customskin.md
[dcsp]:   ./defcsp.md
[es2015]: https://ecma-international.org/ecma-262/6.0/
[es6dep]: https://caniuse.com/#feat=es6
[fcgi]:   /help?cmd=cgi
[ffor]:   https://fossil-scm.org/forum/
[flic]:   /doc/trunk/COPYRIGHT-BSD2.txt
[fshome]: /doc/trunk/www/server/
[fslpl]:  /doc/trunk/www/fossil-v-git.wiki#portable
[fsrc]:   https://fossil-scm.org/home/file/src
[fsrv]:   /help?cmd=server
[hljs]:   https://fossil-scm.org/forum/forumpost/9150bc22ca
[ie11x]:  https://techcommunity.microsoft.com/t5/microsoft-365-blog/microsoft-365-apps-say-farewell-to-internet-explorer-11-and/ba-p/1591666
[ns]:     https://noscript.net/
[pjs]:    https://fossil-scm.org/forum/forumpost/1198651c6d
[s1]:     https://blockmetry.com/blog/javascript-disabled
[s2]:     https://gds.blog.gov.uk/2013/10/21/how-many-people-are-missing-out-on-javascript-enhancement/
[s3]:     https://w3techs.com/technologies/overview/client_side_language/all
[ubo]:    https://github.com/gorhill/uBlock/
[v8]:     https://en.wikipedia.org/wiki/V8_(JavaScript_engine)
[whmsl]:  https://www.whitesourcesoftware.com/most-secure-programming-languages/


----

## <a id="uses"></a>Places Where Fossil’s Web UI Uses JavaScript

This section documents the areas where Fossil currently uses JavaScript
and what it does when these uses are blocked. It also gives common
workarounds where necessary.


### <a id="timeline"></a>Timeline Graph

Fossil’s [web timeline][wt] uses JavaScript to render the graph
connecting the visible check-ins to each other, so you can visualize
parent/child relationships, merge actions, etc. We’re not sure it’s even
possible to render this in static HTML, even with the aid of SVG, due to
the vagaries of web layout among browser engines, screen sizes, etc.

Fossil also uses JavaScript to handle clicks on the graph nodes to allow
diffs between versions, to display tooltips showing local context, etc.

_Graceful Fallback:_ When JavaScript is disabled, this column of the
timeline simply collapses to zero width. All of the information you can
get from the timeline can be retrieved from Fossil in other ways not
using JavaScript: the “`fossil timeline`†command, the “`fossil info`â€
command, by clicking around within the web UI, etc.

_Potential Workaround:_ The timeline could be enhanced with `<noscript>`
tags that replace the graph with a column of checkboxes that control
what a series of form submit buttons do when clicked, replicating the
current JavaScript-based features of the graph using client-server round-trips.
For example, you could click two of those checkboxes and then a button
labeled “Diff Selected†to replicate the current “click two nodes to
diff them†feature.

[wt]: https://fossil-scm.org/home/timeline


### <a id="wedit"></a>The New Wiki Editor

The [new wiki editor][fwt] has many new features, a
few of which are impossible to get without use of JavaScript.

First, it allows in-browser previews without losing client-side editor
state, such as where your cursor is. With the old editor, you had to
re-locate the place you were last editing on each preview, which would
reduce the incentive to use the preview function. In the new wiki
editor, you just click the Preview tab to see how Fossil interprets your
markup, then click back to the Editor tab to resume work with the prior
context undisturbed.

Second, it continually saves your document state in client-side storage
in the background while you’re editing it so that if the browser closes
without saving the changes back to the Fossil repository, you can resume
editing from the stored copy without losing work. This feature is not so
much about saving you from crashes of various sorts, since computers are
so much more reliable these days. It is far more likely to save you from
the features of mobile OSes like Android and iOS which aggressively shut
down and restart apps to save on RAM. That OS design philosophy assumes
that there is a way for the app to restore its prior state from
persistent media when it’s restarted, giving the illusion that it was
never shut down in the first place. This feature of Fossil’s new wiki
editor provides that.

With this change, we lost the old WYSIWYG wiki editor, available since
Fossil version 1.24. It hadn’t been maintained for years, it was
disabled by default, and no one stepped up to defend its existence when
this new editor was created, replacing it. If someone rescues that
feature, merging it in with the new editor, it will doubtless require
JavaScript in order to react to editor button clicks like the “**B**â€
button, meaning “make \[selected\] text boldface.†There is no standard
WYSIWYG editor component in browsers, doubtless because it’s relatively
straightforward to create one using JavaScript.

_Graceful Fallback:_ Fossil’s lack of
a script-free wiki editor mode is not from lack of
desire, but because the person who wrote the new wiki editor didn’t
want to maintain three different editors. (New Ajaxy editor, old
script-free HTML form based editor, and the old WYSIWYG JavaScript-based
editor.) If someone wants to implement a `<noscript>` alternative to the
new wiki editor, we will likely accept that [contribution][cg] as long
as it doesn’t interfere with the new editor. (The same goes for adding
a WYSIWYG mode to the new Ajaxy wiki editor.)

_Workaround:_ You don’t have to use the browser-based wiki editor to
maintain your repository’s wiki at all. Fossil’s [`wiki` command][fwc]
lets you manipulate wiki documents from the command line. For example,
consider this Vi based workflow:

```shell
$ vi 'My Article.wiki'                   # begin work on new article
  ...write, write, write...
:w                                       # save changes to disk copy
:!fossil wiki create 'My Article' '%'    # current file (%) to new article
  ...write, write, write some more...
:w                                       # save again
:!fossil wiki commit 'My Article' '%'    # update article from disk
:q                                       # done writing for today

  ....days later...
$ vi                                     # work sans named file today
:r !fossil wiki export 'My Article' -    # pull article text into vi buffer
  ...write, write, write yet more...
:w !fossil wiki commit -                 # vi buffer updates article
```

Extending this concept to other text editors is an exercise left to the
reader.

[fwc]: /help?cmd=wiki
[fwt]: ./wikitheory.wiki


### <a id="fedit"></a>The File Editor

Fossil’s [optional file editor feature][fedit] works
much like [the new wiki editor](#wedit), only on files committed to the
repository.

The original designed purpose for this feature is to allow [embedded
documentation][edoc] to be interactively edited in the same way that
wiki articles can be. (Indeed, the associated `fileedit-glob` feature
allows you to restrict the editor to working *only* on files that can be
treated as embedded documentation.) This feature operates in much the
same way as the new wiki editor, so most of what we said above applies.

_Workaround:_ This feature is an alternative to Fossil’s traditional
mode of file management: clone the repository, open it somewhere, edit a
file locally, and commit the changes.

_Graceful Fallback:_ There is no technical reason why someone could not
write a `<noscript>` wrapped alternative to the current JavaScript based
`/fileedit` implementation. It would have all of the same downsides as
the old wiki editor: the users would lose their place on each save, they
would have no local backup if something crashes, etc. Still, we are
likely to accept such a [contribution][cg] as long as it doesn’t
interfere with the new editor.

[edoc]:  /doc/trunk/www/embeddeddoc.wiki
[fedit]: /doc/trunk/www/fileedit-page.md


### <a id="ln"></a>Line Numbering

When viewing source files, Fossil offers to show line numbers in some
cases. ([Example][mainc].) Toggling them on and off is currently handled
in JavaScript, rather than forcing a page-reload via a button click.

_Workaround:_ Manually edit the URL to give the “`ln`†query parameter
per [the `/file` docs](/help?cmd=/file).

_Potential Better Workaround:_ Someone sufficiently interested could
[provide a patch][cg] to add a `<noscript>` wrapped HTML button that
would reload the page with this parameter included/excluded to implement
the toggle via a server round-trip.

A related feature is Fossil’s JavaScript-based interactive method
for selecting a range of lines by clicking the line numbers when they’re
visible. JavaScript lets us copy the resulting URL to the clipboard
to share your selection with others.

_Workaround:_ These interactive features would be difficult and
expensive (in terms of network I/O) to implement without JavaScript.  A
far simpler alternative is to manually edit the URL, per above.

[mainc]: https://fossil-scm.org/home/artifact?ln&name=87d67e745


### <a id="sxsdiff"></a>Side-by-Side Diff Mode

The default “diff†view is a side-by-side mode. If either of the boxes
of output — the “from†and “to†versions of the repo contents for that
check-in — requires a horizontal scroll bar given the box content, font
size, browser window width, etc., both boxes will usually end up needing
to scroll since they should contain roughly similar content. Fossil
therefore scrolls both boxes when you drag the scroll bar on one because
if you want to examine part of a line scrolled out of the HTML element
in one box, you probably want to examine the same point on that line in
the other box.

_Graceful Fallback:_ Manually scroll both boxes to sync their views.

### <a id="diffcontext"></a>Diff Context Loading

Fossil’s diff views can
dynamically load more lines of context around changed blocks. The UI
controls for this feature are injected using JavaScript when the page
initializes and make use of XHR requests to fetch data from the
fossil instance.

_Graceful Fallback:_ The UI controls for this feature do not appear
when JS is unavailable, leaving the user with the "legacy" static diff
view.


### <a id="sort"></a>Table Sorting

On pages showing a data table, the column headers may be clickable to do
a client-side sort of the data on that column.

_Potential Workaround:_ This feature could be enhanced to do the sort on
the server side using a page re-load.


### <a id="tree"></a>File Browser Tree View

The [file browser’s tree view mode][tv] uses JavaScript to handle clicks
on folders so they fold and unfold without needing to reload the entire
page.

_Graceful Fallback:_ When JavaScript is disabled, clicks on folders
reload the page showing the folder contents instead. You then have to
use the browser’s Back button to return to the higher folder level.

[tv]: https://fossil-scm.org/home/dir?type=tree


### <a id="hash"></a>Version Hashes

In several places where the Fossil web UI shows a check-in hash or
similar, hovering over that check-in shows a tooltip with details about
the type of artifact the hash refers to and allows you to click to copy
the hash to the clipboard.

_Graceful Fallback:_ When JavaScript is disabled, these tooltips simply
don’t appear, but you can still select and copy the hash using your
platform’s “copy selected text†feature.


### <a id="bots"></a>Anti-Bot Defenses

Fossil has [anti-bot defenses][abd], and it has some JavaScript code
that, if run, can drop some of these defenses if it decides a given page
was loaded on behalf of a human, rather than a bot.

_Graceful Fallback:_ You can use Fossil’s anonymous login feature to
convince the remote Fossil instance that you are not a bot. Coupled with
[the Fossil user capability system][caps], you can restore all
functionality that Fossil’s anti-bot defenses deny to random web clients
by default.

[abd]:  ./antibot.wiki
[caps]: ./caps/


### <a id="hbm"></a>Hamburger Menu

Several of the stock skins (including the default) include a “hamburger menu†(&#9776;) which uses
JavaScript to show a simplified version of the Fossil UI site map using
an animated-in dropdown.

_Graceful Fallback:_ Clicking the hamburger menu button with JavaScript
disabled will take you to the `/sitemap` page instead of showing a
simplified version of that page’s content in a drop-down.

_Workaround:_ You can remove this button by [editing the skin][cskin]
header.


### <a id="clock"></a>Clock

Some stock Fossil skins include JavaScript-based features such as the
current time of day. The Xekri skin includes this in its header, for
example. A clock feature requires JavaScript to get the time on initial
page load and then to update it once a minute.

You may observe that the server could provide the current time when
generating the page, but the client and server may not be in the same
time zone, and there is no reliably-provided information from the client
that would let the server give the page load time in the client’s local
time zone. The server could only tell you *its* local time at page
request time, not the client’s time. That still wouldn’t be a “clock,â€
since without client-side JavaScript code running, that part of the page
couldn’t update once a second.

_Potential Graceful Fallback:_ You may consider showing the server’s
page generation time rather than the client’s wall clock time in the
local time zone to be a useful fallback for the current feature, so [a
patch to do this][cg] may well be accepted. Since this is not a
*necessary* Fossil feature, an interested user is unlikely to get the
core developers to do this work for them.


### <a id="chat"></a>Chat

The [chat feature](./chat.md) is deeply dependent
on JavaScript. There is no obvious way to do this sort of thing without
active client-side code of some sort.

_Potential Workaround:_ It would not be especially difficult for someone
sufficiently motivated to build a Fossil chat gateway, connecting to
IRC, Jabber, etc. The messages are stored in the repository’s `chat`
table with monotonically increasing IDs, so a poller that did something
like

    SELECT xfrom, xmsg FROM chat WHERE msgid > 1234;

…would pull the messages submitted since the last poll. Making the
gateway bidirectional should be possible as well, as long as it properly
uses SQLite transactions.

### <a id="brlist"></a>List of branches

The [`/brlist`](/brlist) page uses JavaScript to enable
selection of several branches for further study via `/timeline`.
Client-side script interactively responds to checkboxes' events
and constructs a special hyperlink in the submenu.
Clicking this hyperlink loads a `/timeline` page that shows
only these selected branches (and the related check-ins).

_Potential Workaround:_ A user can manually construct an appropriate
regular expession and put it into the "Tag Filter" entry of the
`/timeline` page (in its advanced mode).

----

## <a id="future"></a>Future Plans for JavaScript in Fossil

As of mid-2020, the informal provisional plan is to increase Fossil
UI's use of JavaScript considerably compared to its historically minimal
uses. To that end, a framework of Fossil-centric APIs is being developed
in conjunction with new features to consolidate Fossil's historical
hodgepodge of JavaScript snippets into a coherent code base.

When deciding which features to port to JavaScript, the rules of thumb
for this ongoing effort are:

-  Pages which primarily display data (e.g. the timeline) will remain
   largely static HTML with graceful fallbacks for all places they do
   use JavaScript. Though JavaScript can be used effectively to power
   all sorts of wonderful data presentation, Fossil currently doesn't
   benefit greatly from doing so. We use JavaScript on these pages only
   to improve their usability, not to define their primary operations.

-  Pages which act as editors of some sort (e.g. the `/info` page) are
   prime candidates for getting the same treatment as the old wiki
   editor: reimplemented from the ground up in JavaScript using Ajax
   type techniques. Similarly, a JS-driven overhaul is planned for the
   forum’s post editor.

These are guidelines, not immutable requirements. Our development
direction is guided by our priorities:

1) Features the developers themselves want to have and/or work on.

2) Features end users request which catch the interest of one or more
developers, provided the developer(s) in question are in a position to
expend the effort.

3) Features end users and co-contributors can convince a developer into
coding even when they really don't want to.

In all of this, Fossil's project lead understandably has the final
say-so in whether any given feature indeed gets merged into the mainline
trunk. Development of any given feature, no matter how much effort was
involved, does not guarantee its eventual inclusion into the public
releases.
Added www/json-api/_template.md.






















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# JSON API: X
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Foo](#foo)
* [Bar](#bar)
* [Baz](#baz)

---

<a id="foo"></a>
# Foo

<a id="bar"></a>
# Bar

<a id="baz"></a>
# Baz


# Footnotes
Added www/json-api/api-artifact.md.



























































































































































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# JSON API: /artifact
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Checkin Artifacts (Commits)](#checkin)
* [File Artifacts](#file)
* [Wiki Artifacts](#wiki)

---

<a id="checkin"></a>
# Checkin Artifacts (Commits)

Returns information about checkin artifacts (commits).

**Status:** implemented 201110xx

**Request:** `/json/artifact/COMMIT_HASH`

**Required permissions:** "o" (was "h" prior to 20120408)

**Response payload example: (CHANGED SIGNIFICANTLY ON 20120713)**

```json
{
"type":"checkin",
"name":"18dd383e5e7684e", // as given on CLI
"uuid":"18dd383e5e7684ecee327d3de7d3ff846069d1b2",
"isLeaf":false,
"user":"drh",
"comment":"Merge wideAnnotateUser and jsonWarnings into trunk.",
"timestamp":1330090810,
"parents":[
  // 1st entry is primary parent hash:
  "3a44f95f40a193739aaafc2409f155df43e74a6f",
  // Remaining entries are merged-in branch hashes:
  "86f6e675eb3f8761d70d8b82b052ce2b297fffd2",\
  "dbf4ecf414881c9aad6f4f125dab9762589ef3d7"\
],
"tags":["trunk"],
"files":[{
    "name":"src/diff.c",
    // BLOB hashes, NOT commit hashes:
    "uuid":"78c74c3b37e266f8f7e570d5cf476854b7af9d76",
    "parent":"b1fa7e636cf4e7b6ed20bba2d2680397f80c096a",
    "state":"modified",
    "downloadPath":"/raw/src/diff.c?name=78c74c3b37e266f8f7e570d5cf476854b7af9d76"
  },
  ...]
}
```

The "parents" property lists the parent hashes of the checkin. The
"parent" property of file entries refers to the parent hash of that
file. In the case of a merge there may be essentially an arbitrary
number. The first entry in the list is the "primary" parent. The primary
parent is the parent which was not pulled in via a merge operation. The
ordering of remaining entries is unspecified and may even change between
calls. For example: if, from branch C, we merge in A and B and then
commit, then in the artifact response for that commit the hash of branch
C will be in the first (primary) position, with the hashes for branches A
and B in the following entries (in an unspecified, and possibly
unstable, order).

Note that the "uuid" and "parent" properties of the "files" entries
refer to raw blob hashes, not commit (a.k.a. check-in) hashes. See also
[the UUID vs. Hash discussion][uvh].

<a id="file"></a>
# File Artifacts

Fetches information about file artifacts.

**FIXME:** the content type guessing is currently very primitive, and
may (but I haven't seen this) mis-diagnose some non-binary files as
binary. Fossil doesn't yet have a mechanism for mime-type mappings.

**Status:** implemented 20111020

**Required permissions:** "o"

**Request:** `/json/artifact/FILE_HASH`

**Request options:**

-   `format=(raw|html|none)` (default=none). If set, the contents of the
    artifact are included if they are text, else they are not (JSON does
    not do binary). The "html" flag runs it through the wiki parser. The
    results of doing so are unspecified for non-embedded-doc files. The
    "raw" format means to return the content as-is. "none" is the same
    as not specifying this flag, and elides the content from the
    response.
-   DEPRECATED (use format instead): `includeContent=bool` (=false) (CLI:
    `--content|-c`). If true, the full content of the artifact is returned
    for text-only artifacts (but not for non-text artifacts). As of
    20120713 this option is only inspected if "format" is not specified.

**Response payload example: (CHANGED SIGNIFICANTLY ON 20120713)**

```json
{
"type":"file",
"name":"same name specified as FILE_HASH argument",
"size": 12345, // in bytes, independent of format=...
"parent": "hash of parent file blob. Not set for first generation.",
"checkins":[{
  "name":"src/json_detail.h",
  "timestamp":1319058803,
  "comment":"...",
  "user":"stephan",
  "checkin":"d2c1ae23a90b24f6ca1d7637193a59d5ecf3e680",
  "branch":"json",
  "state":"added|modified|removed"
  },
  ...],
/* The following "content" properties are only set if format=raw|html */
"content": "file contents",
"contentSize": "size of content field, in bytes. Affected by the format option!",
"contentType": "text/plain", /* currently always text/plain */
"contentFormat": "html|raw"
}
```

The "checkins" array lists all checkins which include this file, and a
file might have different names across different branches. The size and
hash, however, are the same across all checkins for a given blob.

<a id="wiki"></a>
# Wiki Artifacts

Returns information about wiki artifacts.

**Status:** implemented 20111020, fixed to return the requested version
(instead of the latest) on 20120302.

**Request:** `/json/artifact/WIKI_HASH`

**Required permissions:** "j"

**Options:**

-   DEPRECATED (use format instead): `bool includeContent` (=false). If
    true then the raw content is returned with the wiki page, else no
    content is returned.\  
    CLI: `--includeContent|-c`
-   The `--format` option works as for
    [`/json/wiki/get`](api-wiki.md#get), and if set then it
    implies the `includeContent` option.

**Response payload example:**

Currently the same as [`/json/wiki/get`](api-wiki.md#get).

[uvh]: ../hashes.md#uvh
Added www/json-api/api-auth.md.















































































































































































































































































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# JSON API: X
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Introduction](#intro)
* [Capabilities (Access Rights)](#capabilities)
* [Login](#login)
    * [Anonymous User Logins](#login-anonymous)
* [Logout](#logout)
* [Whoami](#whoami)

---

<a id="intro"></a>
# Introduction

**FIXME:** Ross found a bug:
[](/info/479aadb1d2645601)
(sending the authToken via `POST.envelope` isn't working. It should be.)

The authentication-related operations are described in this section
(ordered alphabetically by operation name).

The JSON API ties in to/piggybacks on fossil's existing cookie-based
login mechanism, but we must also keep in mind that not all JSON-using
clients support cookies. Cookie-capable clients can rely on cookies for
authentication, whereas non-cookie-aware clients will need to keep track
of the so-called "auth token" which is created via a login request, and
pass it in with each request (either as a GET parameter or a property of
the top-level POST request envelope) to prove to fossil that they are
authorized to access the requested resources. For most intents and
purposes, the "auth token" and the "login cookie" are the same thing (or
serve the same purpose), and the auth token is in fact just the value
part of the login cookie (which has a project-specific key).

Note that fossil has two conventional user names which can show up in
various responses but do not refer to specific people: nobody and
anonymous. The nobody user is anyone who is not logged in. The anonymous
user is logged in but has no persistent user data (no associated user
name, email address, or similar). Normally the guest (nobody) user has
more access restrictions. The distinction between the two is largely
historical - it is a mechanism to keep bots from following the
multitudes of links generated by the HTML interface (especially the ZIP
files), while allowing interested users to do so by logging in as the
anonymous user (which bots have (or *had*, at the time) a harder time
doing because the password is randomly generated and protected from
brute-force attacks by hashing). In the JSON API, the distinction
between anonymous and nobody is not expected to be as prominent as it is
in the HTML interface because the reasons for the distinction don't
apply in *quite* the same ways to the JSON interface. It is possible,
however, that a given repo locks out guest access to, e.g. the wiki or
tickets, while still allowing anonymous (logged in) access.

<a id="capabilities"></a>
# Capabilities (Access Rights)

The "cap" request returns information about the so-called "capabilities"
(access rights) of the currently logged in user. This command is
basically the same as the "whoami" command, but returns capabilities in
a more exanded form (same data, different representation) and does not
include the authToken in the response.

TODO: consider combining this and [whoami](#whoami) into a single
whoami response.  We don't need both. We also don't really need the
permissionFlags member - the same info is already \[in a more cryptic form\]
in the capabilities string.

**Status:** implemented 201109xx.

**Required privileges:** none

**Request:** `/json/cap`

In CLI mode, permissions are not used/honored, and this command will
report that the caller has all permissions (which he effectively does).

**Response payload example:**

```json
{
"userName":"json-demo",
"capabilities":"hgjorxz", /* raw fossil permissions list */
"permissionFlags":{ /* Same info in a somewhat friendlier form */
 "setup": false,
 "admin": false,
 "delete": false,
 "password": false,
 "query": false,
 "checkin": false,
 "checkout": true,
 "history": true,
 "clone": false,
 "readWiki": true,
 "createWiki": false,
 "appendWiki": false,
 "editWiki": false,
 "readTicket": true,
 "createTicket": false,
 "appendTicket": false,
 "editTicket": false,
 "attachFile": false,
 "createTicketReport": false,
 "readPrivate": false,
 "zip": true,
 "xferPrivate": false
 }
}
```

**FIXME:** several new permissions have been added to fossil since
this API was implemented.


<a id="login"></a>
# Login

**Status:** implemented 20110915 (anonymous login 20110918)

**Required privileges:** none

**Request:** (see below for Anonymous user special case)

- `/json/login?name=...&password=...`
- `/json/login?n=...&p=...` (for symmetry with existing login mechanism)

Or `POST.payload`: `{ "name": ..., "password": ...}`

(POST is highly preferred because it keeps the password out of web
server logs!)

**Response payload example:** (structure changed 20111001)

```json
{
"authToken":"...",
"name":"json-demo",
"capabilities":"hgjorxz",
"loginCookieName": "fossil-XXXXX" /*project-specific cookie name*/
/* TODO: add authTokenExpiry timestamp (cookie expiry time) */
}
```

We "should" be able to inherit fossil's `REMOTE_USER` handling without
any special support, but that is untested so far. (If you happen to test
this, please update this doc with (or otherwise report) your results!)

The response *also* sets the conventional fossil login cookie (for
clients which can make use of cookies), using fossil's existing
mechanism for this.

Further requests which require authentication must include the
`authToken` (from the returned payload value) in the request (or it must
be available via fossil's standard cookie) or access may (depending on
the request) be denied. The `authToken` may optionally be set in the
request envelope or as a GET parameter, and it *must* be given if the
request requires restricted access to a resource. e.g. if reading
tickets is disabled for the guest user then all non-guest users must
send authentication info in their requests in order to be able to fetch
ticket info.

Cookie-aware clients should send the login-generated cookie with each
request, in which case they do not need to explicitly include the
`authToken` in the JSON envelope/GET arguments. If submitted, the
`authToken` is used, otherwise the cookie, if set, is used. Note that
fossil uses a project-dependent cookie name in order to help thwart
attacks, so there is no simple mapping of cookie *name* to auth
token. That said, the cookie's *value* is also the auth token's value.

> Special case: when accessing fossil over a local server instance
which was started with the `--localauth` flag, the `authToken` is ignored
(neither validated nor used for any form of authentication).


<a id="login-anonymous"></a>
## Anonymous User Logins

The Anonymous user requires special handling because he has a random
password.

First fetch the password and the so-called "captcha seed" via this
request:

`/json/anonymousPassword`

It will return a payload in the form:

```json
{
"seed": a_32_bit_unsigned_integer,
"password": "1234abcd" /*hexadecimal STRING*/
}
```

The "seed" and "password" values of the response payload must be set as
the "anonymousSeed" and "password" fields (respectively) of the
subsequent login request. The login request is identical to
non-anonymous login except that extra "anonymousSeed" property is
required.

The password value *may* be time-limited, and *may* eventually become
invalidated due to old age. This is unspecified.

***Potential***** (low-probability) bug regarding the seed value:** from
what I hear, some unusual JSON platforms don't support full 32-bit
precision. If absolutely necessary we could chop off a bit or two from
the seed value (*if* it ever becomes a problem and if DRH blesses it).
Or we could just make it a double.


<a id="logout"></a>
# Logout

**Status:** implemented 20110916

**Required privileges:** none, but must be logged in

**Request:**

  - `/json/logout?authToken=...token fetched by /login`

Or: set the `authToken` property of the POST envelope (as opposed to the
`POST.payload`)

Or: fossil's normal cookie mechanism is the fallback for the auth token.

**Response payload:** The same as the "whoami" response, containing the
info for the "nobody" user.

This request requires the authentication token, and subsequent logouts
without an intervening login will fail with the "auth token not
provided" error. In effect this request removes the login entry from the
user account, making the token invalid for future requests. In HTTP
mode, on success fossil's login cookie is unset by this call.


<a id="whoami"></a>
# Whoami

This request fetches the current user's login name, capabilities, and
auth token. This can be used to check whether a login is active when the
client has not explicitly logged in (e.g. was logged in automatically
via a pre-existing cookie).

**Status:** implemented 20110922

**Required privileges:** none

**Request:** `/json/whoami`

**Response payload example:**

```json
{
"name": "nobody",
"capabilities": "o",
"authToken": "fossil auth token (only for logged-in users)"
}
```

The reason authToken is included in the response is because it gives
client-side JavaScript code a way of fetching/checking for the auth
token at app startup. The token is normally sent as a cookie but parsing
the cookies in the browser is tedious, and fossil has a
project-dependent cookie name (which complicates parsing a bit). If
client code digs the cookie out of the browser, the app still wouldn't
know if the token is still valid, whereas whoami won't (or shouldn't!)
return an expired auth token. If the request does not include
authentication info (via the cookie, GET param, or request envelope)
then the response will not contain the authToken property and the user's
name will be "nobody".
Added www/json-api/api-branch.md.






















































































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# JSON API: /branch
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Branch List](#list)
* [Create Branch](#create)

---

<a id="list"></a>
# Branch List

**Status:** implemented, at least in draft form, on 20110921.

**Required privileges:** "o"

**Request:** `/json/branch/list`

**Response payload example:**

```json
{
"range":"closed",
"current":"json", /* only when there is a local opened checkout */
"branches":[
  "artifact_description",
  "bch",
  "ben-changes-report",
  "ben-safe-make",
  "ben-security",
  "ben-testing",
  …
]
}
```

*Potential* TODO: add "tip" property which names the most recently
modified branch? (How to get this?)

HTTP GET/`POST.payload` options:

-   `range`: a string in the set ("open", "closed", "all"),
    case-sensitive, but only the first letter is actually evaluated.
    Default="open". Only branches with this state are returned.

CLI mode options (same semantics as HTTP equivalents), must come last on
the CLI:

-   `-r|--range all|closed|open`
-   `-a` (equivalent to `-r all`)
-   `-c` (equivalent to `-r closed`). Only one of `-a`/`-c` may be specified,
    and if both are specified then which one takes precedence is
    unspecified.


<a id="create"></a>
# Create Branch

**Status:** implemented 20111002

**Required privileges:** "w"

**Request:** `/json/branch/create`

**Request options:**

-   `name=string` (REQUIRED) Name of new branch
-   `basis=string` (default=trunk) Name of parent branch to branch from.
-   `bgColor=string` (default=something ugly) In `#RRGGBB` form. (FIXME:
    change the default to use fossil's random bgcolor technique.)
-   `private=bool` (default=false) Determines whether the branch is
    private or not.

**Response payload example:**

```json
{
"name":"my-branch",
"basis":"my-other-branch",
"uuid":"de8115db4ce388ed8d0af666ae7d90e1410be4ca",
"isPrivate":true,
"bgColor":"#ff0000"
}
```

Added www/json-api/api-checkout.md.






















































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# JSON API: /status
([&#x2b11;JSON API Index](index.md))

# Status of Local Checkout

**Status:** implemented 20130223

**Required permissions:** n/a (local access only)

**Request:** `/json/status`

This command requires a local checkout and is the analog to the "fossil
status" command.

**Request Options:** currently none.

Payload example:

```json
{
"repository":"/home/stephan/cvs/fossil/fossil.fsl",
"localRoot":"/home/stephan/cvs/fossil/fossil/",
"checkout":{
  "uuid":"b38bb4f9bd27d0347b62ecfac63c4b8f57b5c93b",
  "tags":["trunk"],
  "datetime":"2013-02-22 17:34:19 UTC",
  "timestamp":1361554459
 },
/* "parent" info is currently missing. */
"files":[
  {"name":"src/checkin.c", "status":"edited"}
  ...],
"errorCount":0 /* see notes below */
}
```

Notes:

-   The `checkout.tags` property follows the framework-wide convention
    that the first tag in the list is the primary branch and any others
    are secondary.
-   `errorCount` is +1 for each missing file. Conflicts are not treated as
    errors because the CLI 'status' command does not treat them as such.
-   The `"status"` entry for each of the `"files"` entries will be either a
    single string containing a single description of the status change, or
    an array of strings if more than one change was made, e.g. `"edited"`
    and `"renamed"`. The status strings include:\  
    `deleted`, `new`, `notAFile`, `missing`, `updatedByMerge`,
    `updatedByIntegrate`, `addedBymerge`, `addedByIntegrate`,
    `conflict`, `edited`, `renamed`
-   File objects with a `"renamed"` status will contain a `"priorName"`
    property in addition to the `"name"` property reported in all cases.
-   TODO: Info for the parent version is currently missing.
-   TODO: "merged with" info for the checkout is currently missing.
Added www/json-api/api-config.md.




































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# JSON API: /config
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Get Config](#get)
* [Set Config](#set)

---

<a id="get"></a>
# Fetch Config

**Status:** Implemented 20120217

**Required permissions:** "s"

**Request:** `/json/config/get/Area[/Area2/...AreaN]`

Where "Area" can be any combination of: *skin*, *ticket*, *project*,
*all*, or *skin-backup* (which is not included in "all" by default).

**Response payload example:**

```json
{
"ignore-glob":"*~",
"project-description":"For testing Fossil's JSON API.",
"project-name":"fossil-json-tests"
}
```

<a id="set"></a>
# Set/Modify Config

Not implemented.
Added www/json-api/api-diff.md.












































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# JSON API: /diff
([&#x2b11;JSON API Index](index.md))

# Diffs

**Status:** implemented 20111007

**Required permissions:** "o"

**Request:** `/json/diff[/version1[/version2]]`

**Request options:**

-   `v1=string` Is the "from" version. It may optionally be the first
    positional parameter/path element after the command name.
-   `v2=string` Is the "to" version. It may optionally be the first
    positional parameter/path element after the v1 part.
-   `context=integer` (default=unspecified) Defines the number of context
    lines to display in the diff.\  
    CLI: `--context|-c`
-   `sbs=bool` (default=false) Generates "side-by-side" diffs, but their
    utility in JSON mode is questionable.
-   `html=bool` (default=false) causes the output to be marked up with
    HTML in the same manner as it is in the HTML interface.

**Response payload example:**

```json
{
"from":"7a83a5cbd0424cefa2cdc001de60153aede530f5",
"to":"96920e7c04746c55ceed6e24fc82879886cb8197",
"diff":"@@ -1,7 +1,7 @@\\n-C factored\\\\sout..."
}
```

TODOs:

-   Unlike the standard diff command, which apparently requires a commit
    hash, this one diffs individual file versions. If a commit hash is
    provided, a diff of the manifests is returned. (That should be
    considered a bug - we should return a combined diff in that case.)
-   If hashes from two different types of artifacts are given, results
    are unspecified. Garbage in, garbage out, and all that.
-   For file diffs, add the file name(s) to the response payload.
Added www/json-api/api-dir.md.





















































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# JSON API: /dir
([&#x2b11;JSON API Index](index.md))

# Directory Listing

**Status:** implemented 20120316

**Required privileges:** "o". Was "h" prior to 20120720, but the HTML
version of /dir changed permissions and this API was modified to match
it.

**Request:** `/json/dir`

Options:

-   `checkin=commit` (use "tip" for the latest). If checkin is not set
    then all files from all versions of the tree are returned (but only
    once per file - not with complete version info for each file in all
    branches).\  
    CLI: `--checkin|-ci CHECKIN`
-   `name=subdirectory` name. To fetch the root directory, don't pass this
    option, or use an empty value or "/".\  
    CLI: use `--name|-n NAME` or pass it as the first argument after
    the `dir` subcommand.

**Response payload example:**

```json
{
 "name":"/", /* dir name */
 "uuid":"ac6366218035ed62254c8d458f30801273e5d4fc",
 "checkin":"tip",
 "entries":[{
  "name": "ajax", /* file name/dir name fragment */
  "isDir": true, /* only set for directories */
  /* The following properties are ONLY set if
   the 'checkin' parameter is provided.
  */
  "uuid": "..." /*only for files, not dirs*/,
  "size": number,
  "timestamp": number
 },...]
}
```

The checkin property is only set if the request includes it. The
entry-specific uuid and size properties (e.g. `entries[0].uuid`) are
only set if the checkin request property is set and they refer to the
latest version of that file for the given checkin. The `isDir` property is
only set on directory entries.

This command does not recurse into subdirectories, though it "should be"
simple enough to add the option to do so.
Added www/json-api/api-finfo.md.





















































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# JSON API: /finfo
([&#x2b11;JSON API Index](index.md))

# File Information

**Status:** implemented 2012-something, but output structure is likely
to change.

**Required privileges:** "o"

**Request:** `/json/finfo?name=path/to/file`

Options:

-   `name=string`. Required. Use the absolute name of the file, including
    any directory parts, and without a leading slash. e.g.
    `"path/to/my.c"`.\  
    CLI mode: `--name` or positional argument.
-   `checkin=string`. Only return info related to this specific checkin,
    as opposed to listing all checkins. If set, neither "before" nor
    "after" have any effect.\  
    CLI mode: `--checkin|-ci`
-   `before=DATETIME` only lists checkins from on or before this time.\  
    CLI mode: `--before|-b`
-   `after=DATETIME` only lists checkins from on or after this time.
    Using this option swaps the sort order, to provide reasonable
    behaviour in conjunction with the limit option.\  
    Only one of "before" and "after" may be specified, and if both are
    specified then which one takes precedence is unspecified.\  
    CLI mode: `--after|-a`
-   `limit=integer` limits the output to (at most) the given number of
    associated checkins.\  
    CLI mode: `--limit|-n`

**Response payload example (very likely to change!):**

```json
{
"name":"ajax/i-test/rhino-shell.js",
"checkins":[{
  "checkin":"6b7ddfefbfb871f793378d8f276fe829106ca49b",
  "uuid":"2b735676d55e3d06d670ffbc643e5d3f748b95ea",
  "timestamp":1329514170,
  "user":"viriketo",
  "comment":"<...snip...>",
  "size":6293,
  "state":"added|modified|removed"
  },…]
}
```

**FIXME:** there is a semantic discrepancy between `/json/artifact`'s
`payload.checkins[N].uuid` and this command's.
Added www/json-api/api-misc.md.




























































































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# JSON API: Misc. APIs
([&#x2b11;JSON API Index](index.md))

Some operations simply don't fit into a specific category (well, none
except "misc")...

Jump to:

* [Global State ("g")](#g)
* [Rebuild Repository](#rebuild)
* [Result Code Descriptions](#result-codes)

---

<a id="g"></a>
# Global State ("g")

Fossil's internal state is maintained in a global object called "g". And
thus this command is named "g"...

**Status:** implemented 20111009

**Required permissions:** "a" or "s"

**Request:** `/json/g`

**Response payload example:** this is a debugging-only request, and has
no stable response payload structure. The result object contains all
kinds of details gleaned from the fossil environment.

Easter egg: this output can be added to ANY response by passing the
`debugFossilG` boolean in the POST envelope or GET parameters, or as the
`--json-debug-g` flag in CLI mode. This requires admin or setup
privileges, though, and it is silently ignored for other users.


<a id="rebuild"></a>
# Rebuild Repository

This request does the same as the "fossil rebuild" command, rebuilding
the repo-internal structure. This is often required after upgrading the
fossil binary on a system. There "are very probably" cases where calling
this over HTTP will not work (e.g. if the user table has changed enough
that the access rights cannot be validated without a rebuild, i.e. a
chicken/egg scenario). Another consideration is that this request can
take a long time to run - rebuilding the fossil repo on my laptop takes
about 21 seconds, which is likely longer than the timeout set on an XHR
request, meaning that the rebuild transaction will fail. It can safely
be run in CLI mode, where timeouts are not normally a concern. As a
preliminary benchmark: rebuilding the fossil repo (as of late 2011)
takes just over 21 seconds on my 32-bit 1.6GHz netbook. That said, most
repos are much smaller and rebuild in under a few seconds.

**Status:** implemented 20110929

**Required privileges:** "a"

**Request:** `/json/rebuild`

Requires admin access rights.

**Response payload:** none (response envelope `resultCode` reports failure).
Potential TODO: return the amount of time it took to rebuild.


<a id="result-codes"></a>
# Result Code Descriptions

This request returns the full list of result codes documented for
Fossil's JSON API. Each result code is returned as an object containing
metadata about the result code.

**Status:** implemented 20111006

**Required permissions:** none

**Request:** `/json/resultCodes`

**Response payload example:**

```json
[{
  "resultCode":"FOSSIL-1000",
  "cSymbol":"FSL_JSON_E_GENERIC",
  "number":1000,
  "description":"Generic error"
 },
 … many more objects with the same structure …
]
```


Added www/json-api/api-query.md.





















































































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# JSON API: /query
([&#x2b11;JSON API Index](index.md))

# SQL Query

**Status:** implemented 20111008

**Required privileges:** "a" or "s"

**Request:** `/json/query`

Potential FIXME: restrict this to queries which return results, as opposed
to those which may modify data.

Options:

-   `sql=string` The SQL code to run. It is expected that it be a SELECT
    statement, but that is not enforced. This parameter may be set as a
    POST.payload property, as the POST.payload itself, GET, or as a
    positional parameter coming after the command name (CLI and HTTP
    modes, though the escaping would be unsightly in HTTP mode).
-   `format=string` (default="o"). "o" specifies that each result row
    should be in the form of key/value pairs (o=object). "a" means each
    row should be an array of values.

**Example request:**

POST to: `/json/query`

```json
{
"authToken": "...",
"payload": {
  "sql": "SELECT * FROM reportfmt",
  "format": "o"
  }
}
```

**Response payload example:** (assuming the above example)


```
{
"columns":[
  "rn",
  "owner",
  "title",
  "mtime",
  "cols",
  "sqlcode"
 ],
  "rows":[
   {
    "rn":1,
    "owner":"drh",
    "title":"All Tickets",
    "mtime":1303870798,
   },
  …
  ]
}
```

The column names are provided in a separate field because their order
is guaranteed to match the order of the query columns, whereas object
key/value pairs might get reordered (typically sorted by key) when
travelling through different JSON implementations. In this manner,
clients can e.g. be sure to render the columns in the proper
(query-specified) order.

When in "array" mode the "rows" results will be an array of arrays. For
example, the above "rows" property would instead look like:

`[ [1, "drh", "All Tickets", 1303870798, … ], … ]`

Note the column *names* are never *guaranteed* to be exactly as they
appear in the SQL *unless* they are qualified with an AS, e.g. `SELECT
foo AS foo...`. When generating reports which need fixed column names, it
is highly recommended to use an AS qualifier for every column, even if
they use the same name as the column. This is the only way to guarantee
that the result column names will be stable. (FYI: that behaviour comes
from sqlite3, not the JSON bits, and this behaviour *has* been known to
change between sqlite3 versions (so this is not just an idle threat of
*potential* future incompatibility).)
Added www/json-api/api-settings.md.































































































































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# JSON API: /settings
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Fetch Settings](#get)
* [Set Settings](#set)

---

<a id="get"></a>
# Fetch Settings

**Status:** Implemented 20230120

**Required permissions:** "o"

**Request:** `/json/settings/get[?version=X]`

**Response payload example:**

```json
{
    "access-log":{
      "versionable":false,
      "sensitive":false,
      "defaultValue":"off",
      "valueSource":null,
      "value":null
    },
...
    "binary-glob":{
      "versionable":true,
      "sensitive":false,
      "defaultValue":null,
      "valueSource":"versioned",
      "value":"*.gif\n*.ico\n*.jpg\n*.odp\n*.dia\n*.pdf\n*.png\n*.wav..."
    },
...
    "web-browser":{
      "versionable":false,
      "sensitive":true,
      "defaultValue":null,
      "valueSource":"repo",
      "value":"firefox"
    }
}
```

Each key in the payload is the name of a fossil-recognized setting,
modeled as an object. The keys of that are:


- `defaultValue`: the setting's default value, or `null` if no default
  is defined.
- `value`: The current value of that setting.
- `valueSource`: one of (`"repo"`, `"checkout"`, `"versioned"`, or
  `null`), specifying the data source where the setting was found. The
  settings sources are checked in this order and the first one found
  is the result:
    - If `version=X` is provided, check-in `X` is searched for a
      versionable-settings file. If found, its value is used and
      `valueSource` will be `"versioned"`. If `X` is not a checkin, an
      error response is produced with code `FOSSIL-3006`.
    - If a versionable setting is found in the current checkout, its
      value is used and `valueSource` will be `"versioned"`
    - If the setting is found in checkout database's `vvar` table, its
      value is used and `valueSource` will be `"checkout"`.
    - If the setting is found in repository's `config` table, its
      value is used and `valueSource` will be `"repo"`.
    - If no value is found, `null` is used for both the `value` and
      `valueSource` results. Note that _global settings are never
      checked_ because they can leak information which have nothing
      specifically to do with the given repository.
- `sensitive`: a value which fossil has flagged as sensitive can only
  be fetched by a Setup user.  For other users, they will always have
  a `value` and `valueSource` of `null`.
- `versionable`: `true` if the setting is tagged as versionable, else
  `false`.

Note that settings are internally stored as strings, even if they're
semantically treated as numbers. The way settings are stored and
handled does not give us enough information to recognize their exact
data type here so they are passed on as-is.


<a id="set"></a>
# Set Settings

**Status:** Implemented 20230120

**Required permissions:** "s"

**Request:** `/json/settings/set`

This call requires that the input payload be an object containing a
mapping of fossil-known configuration keys (case-sensitive) to
values. For example:

```json
{
  "editor": "emacs",
  "admin-log": true,
  "auto-captcha": false
}
```

It iterates through each property, which must have a data type of
`null`, boolean, number, or string. A value of `null` _unsets_
(deletes) the setting.  Boolean values are stored as integer 0
or 1. All other types are stored as-is. It only updates the
`repository.config` database and never updates a checkout or global
config database, nor is it capable of updating versioned settings
(^Updating versioned settings requires creating a full check-in.).

It has no result payload but this may be changed in the future it
practice shows that it should return something specific.

Error responses include:

- `FOSSIL-2002`: called without "setup" permissions.
- `FOSSIL-3002`: called without a payload object.
- `FOSSIL-3001`: passed an unknown config option.
- `FOSSIL-3000`: a value has an unsupported data type.

If an error is triggered, any settings made by this call up until that
point are discarded.
Added www/json-api/api-stat.md.



























































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# JSON API: /stat
([&#x2b11;JSON API Index](index.md))

# Repository Stats

**Status:** implemented

**Required privileges:** "o"

**Request:** `/json/stat`

**Response payload example:** (fields marked with `*` are omitted in
"brief" mode)

```json
{
"projectName":"Fossil",
"projectDescription":"Fossil SCM", /* added 20120217 */
"repositorySize":24464384,
* "blobCount":13612,
* "deltaCount":9348,
* "uncompressedArtifactSize":589205834,
* "averageArtifactSize":43292,
* "maxArtifactSize":4620758,
* "compressionRatio":"24:1",
* "checkinCount":3150,
* "fileCount":456,
* "wikiPageCount":23,
* "ticketCount":940,
"ageDays":1512,
"ageYears":4.139744,
"projectCode":"25d3a4b83202c0d616a5ed17334f180dac4434dc",
"compiler":"gcc-4.1.2 20080704 (Red Hat 4.1.2-50)",
"sqlite":{
  "version":"2011-09-04 01:27:00 [6b657ae750] (3.7.8)",
  "pageCount":23891,
  "pageSize":1024,
  "freeList":2705,
  "encoding":"UTF-8",
  "journalMode":"delete"
}
}
```

**Options:**

-   "Full detail" mode:\  
    **HTTP/payload parameter:** full=bool\  
    **CLI MODE:** -f|--full with no value.\  
    If true then all properties are included, else certain properties
    are omitted from the payload (because they take a relatively long
    time to calculate).\
    **TODO:** rename this to verbose, for consistency.\  
    **Default=false**. *This is in contrast to the HTML interface*,
    which defaults to full detail mode. Testing shows stat to have a
    relatively high per-call cost/run time, so it defaults
    to "brief" mode by default. Full-detail mode can, on slow hardware,
    take half a minute to respond, whereas non-full mode takes well
    under one second.
Added www/json-api/api-tag.md.





































































































































































































































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# JSON API: /tag
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Add](#add)
* [Cancel](#cancel)
* [Find](#find)
* [List](#list)

---

<a id="add"></a>
# Add Tag

**Status:** implemented 20111006

**Required permissions:** "i"

**Request:** `/json/tag/add[/name[/checkin[/value]]]`

**Request options:**

-   `name=string` The tag name.
-   `checkin=string` The checkin to tag. May be a symbolic branch name.
-   raw=bool (=false) If true, then the name is set as it is provided by
    the client, else it gets "sym-" prefixed to it. Do not use this
    unless you really know what you're doing.
-   `value=string` (=null) An optional value. While tags *may* have values
    in fossil, it is unusual for them to have a value. (This probably
    has some interesting uses in custom UIs.)
-   `propagate=bool` (=false) Sets the tag to propagate to all descendants
    of the given checkin.

In CLI modes, the name, checkin, and value parameters may optionally be
supplied as positional parameters (in that order, after the command
name). In HTTP mode they may optionally be the 4th-6th path elements or
specified via GET/`POST.envelope` parameters.

**Response payload example:**

```json
{
"name":"my-tag",
"value":"abc",
"propagate":true,
"raw":false,
"appliedTo":"626ab2f3743543122cc11bc082a0603d2b5b2b1b"
}
```

The `appliedTo` property is the hash of the check-in to which the tag was
applied. This is the "resolved" version of the check-in name provided by
the client.

<a id="cancel"></a>
# Cancel Tag

**Status:** implemented 20111006

**Required permissions:** "i"

**Request:** `/json/tag/cancel[/name[/checkin]]`

**Request options:**

-   `name=string` The tag name. May optionally be provided as the 4th path
    element.
-   `checkin=string` The checkin to untag. May be a symbolic branch name.
    May optionally be provided as the 5th path element.

In CLI modes, the name and checkin parameters may optionally be supplied
as positional parameters (in that order, after the command name) or
using the `-name NAME` and `-checkin NAME` options. In HTTP mode they may
optionally be the 4th and 5th path elements.

**Response payload:** none (resultCode indicates failure)


<a id="find"></a>
# Find Tag

Fetches information about artifacts having a particular tag.

Achtung: the output of this response is based on the HTML-mode
implementation, but it's not yet certain that it's exactly what we want
for JSON mode. The request options and response format may change.

**Status:** implemented 20111006

**Required permissions:** "o"

**Request:** `/json/tag/find[/tagName]`

The response format differs somewhat depending on the options:

-   `name=string` The tag name to search for. Can optionally be the 3rd
    path element.
-   `limit=int` (defalt=0) Limits the number of results (0=no limit).
    Since they are ordered from oldest to newest, the newest N results
    will be returned.
-   `type=string` (default=`*`) Searches only for the given type of
    artifact (using fossil's conventional type naming: ci, e, t, w.)
-   `raw=bool` (=false) If enabled, the response is an array of hashes
    of the requested artifact type; otherwise,
    it is an array of higher-level objects. If this is
    true, the "name" property is interpreted as-is. If it is false, the
    name is automatically prepended with "sym-" (meaning a branch).
    (FIXME: the current semantics are confusing and hard to remember.
    Re-do them.)

**Response payload example, in RAW mode: (expect this format to change
at some point!)**

```json
{
"name":"sym-trunk"
"raw":true,
"type":"*",
"limit":2,
"artifacts":[
  "a28c83647dfa805f05f3204a7e146eb1f0d90505",
  "dbda8d6ce9ddf01a16f6c81db2883f546298efb7"
 ]
}
```

Very likely todo: return more information with that (at least the
artifact type and timestamp). Once the `/json/artifact` family of bits is
finished we could use that to return artifact-type-dependent values
here.

**Response payload example, in non-raw mode:**

```
{
"name":"trunk",
"raw":false,
"type":"*",
"limit":1,
"artifacts":[{
  "uuid":"4b0f813b8c59ac8f7fbbe33c0a369acc65407841",
  "timestamp":1317833899,
  "comment":"fixed [fc825dcf52]",
  "user":"ron",
  "eventType":"checkin"
 }]
}
```

<a id="list"></a>
# List Tags

**Status:** implemented 20111006

**Required permissions:** "o"

**Request:** `/json/tag/list[/checkinName]`

Potential fixme: we probably have too many different response formats
here. We should probably break this into multiple subcommands.

The response format differs somewhat depending on the options:

-   `checkin=string` Lists the tags only for the given CHECKIN (can be a
    branch name). If set, includeTickets is ignored (meaningless in this
    combination). This option can be set as either a GET/`POST.payload`
    option, as the last element of the request path, e.g.
    `/json/tag/list/MYBRANCH` *or* with `POST.payload` set to a string
    value.
-   `raw=bool` (default=false) uses "raw" tag names
-   `includeTickets=bool` (default=false) Determines whether `tkt-` tags
    are included. There is one of these for each ticket, so there can be
    many of them (over 900 in the main fossil repo as of this writing).

**Response format when raw=false and no checkin is specified:**

```json
{
"raw":false,
"includeTickets":false,
"tags":[
  "bgcolor",
  "branch",
  "closed",
  …all tag names...
 ]
}
```

Enabling the `raw` option will leave the internal `sym-` prefix on tags
which have them but will not change the structure. If `includeTickets` is
true then `tkt-` entries (possibly very many!) will be included in the
output, else they are elided.

**General notes:**

The `tags` property will be null if there are no tags, every non-empty
repo has at least one tag (for the trunk branch).

**Response format when raw=false and checkin is specified:**

```json
{
"raw":false,
"tags":{
  "json":null,
  "json-multitag-test":null
 }
}
```

The `null`s there are the tag values (most tags don't have values).

If `raw=true` then the tags property changes slightly:

```json
{
"raw":true,
"tags":{
  "branch":"json",
  "sym-json":null,
  "sym-json-multitag-test":null
 }
}
```

TODO?: change the tag values to objects in the form
`{value:..., tipUuid:string, propagating:bool}`.
Added www/json-api/api-ticket.md.








































































































































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# JSON API: Tickets
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Ticket Reports](#reports)
  * [Fetch a Report](#report-get)
  * [List Reports](#report-list)
  * [Run a Report](#report-run)


---

# Tickets

This API is incomplete. It is missing at least the following features:

-   Content for a given ticket ID
-   History for a given ticket ID?
-   An option to enable/disable the generation of hyperlinks, as links
    won't be useful in most non-browser clients.


<a id="reports"></a>
# Ticket Reports

<a id="report-get"></a>
## Fetch a Report

**Status:** implemented 20111008

**Required privileges:** "t" (the thinking being that only those
permitted to create reports should be able to read their SQL code)

**Request:** `/json/report/get[/REPORT_NUMBER]`

**Request options:**

-   `report=number` The report number to fetch.\  
    CLI: `-report|-r` \  
    (Design note: `--number/-n` was not used because that parameter has a
    different meaning (limit response count) in several commands.) May
    optionally be defined via the 4th GET path element or CLI arg.

**Response payload example:**

```json
{
"report":1,
"owner":"drh",
"title":"All Tickets",
"timestamp":"112443570187200",
"columns":"#ffffff Key:\r\n#f2dcdc Active\r\n...",
"sqlCode":"..."
}
```

<a id="report-list"></a>
## List Reports

**Status:** implemented 20111008

**Required privileges:** "r" or "n"

**Request:** `/json/report/list`

**Response payload example:**

```json
[
 {
  "report":1,
  "title":"All Tickets",
  "owner":"drh"
  },
  …
]
```

<a id="report-run"></a>
## Run a Report

**Status:** implemented 20111008

**Required privileges:** "r" or "n"

**Request:** `/json/report/run[/REPORT_NUMBER]`

Request options:

-   `report|-r=int` Specifies which report to run. May optionally be
    supplied as the 4th CLI arg or URL path element.
-   `format|-f=string` (default="o") Specifies "array" or "object" output
    format.

**Response payload example:**

```json
{
  "report":1,
  "title":"All Tickets",
  "sqlcode": "only set if requester has 't' privileges.",
  "columnNames":[ … list of column names … ],
  "tickets":[
    {
      "bgcolor":"#cfe8bd",
      "#":"fc825dcf52",
      "timestamp":"112443570187200",
      "type":"Code_Defect",
      "status":"Fixed",
      "subsystem":null,
      "title":"\"config pull all\" asks to approve ssl cert"
    },
    …
  ]
}
```

Note that the column names of ticket reports are determined by the
reports themselves, and not C code. That means that we cannot return a
standard set of column names here. Fossil requires certain column naming
conventions for purposes of styling the HTML interface, e.g. the "\#"
column is always the uuid of the record and "bgcolor" (note the
different casing than bgColor used throughout the rest of this API!) has
a specific meaning to the HTML report browser. Fossil also allows the
tickets to be extended with client-specified fields, so we cannot
generically make these results fit into the API-wide naming scheme. Full
details are here:

[](/doc/trunk/www/custom_ticket.wiki)

and:

[](/rptsql?rn=1)

(That one may require non-default permission.)
Added www/json-api/api-timeline.md.






















































































































































































































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# JSON API: /timeline
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Introduction](#intro)
* [Branch Timeline](#branch)
* [Technote (formerly Event) Timeline](#technote)
* [Ticket Timeline](#ticket)
* [Wiki Timeline](#wiki)

---

<a id="intro"></a>
# Introduction

These requests return overview-level information about various types of
changes. The response payload differs for each artifact type, and the
current structures are almost certainly not "final" (e.g. we are still
undecided on how/whether to handle artifact links within commit messages
and whatnot).

By default the entries are returned in chronological order from newest
to oldest, but some options might change that.

FIXME (20120623): we have some inconsistent `type` vs. `eventType` in
the result sets. `type` is the current preferred choice (and it seems
unlikely that `eventType` is actually used in any client code). We
don't actually need either one (but a use for `type` is easily
envisioned), and we may get rid of both.

**Common request options (via CLI, GET or POST.payload):**

-   `limit=integer` limits the number of entries in the response. Default
    is unspecified (but is "quite possibly 20 or so"). A limit value of
    0 disables any limit, fetching all entries (which can take a really
    long time and might overload clients which have very limited
    memory).\  
    CLI mode: `--limit|-n #`
-   `after="YYYY-MM-DD[ HH:mm:ss]"` limits the search to items on or
    after the given date string. Reverses the normal timeline sort
    order. Alias: "a". Only one of "after" or "before" can be used, and
    if both are specified then which one takes precedence is
    unspecified.\  
    CLI mode: `--after|-a "DATE[ TIME]"`
-   `before="YYYY-MM-DD[ HH:mm:ss]"` limits the search to items on or
    before the given date string.\  
    CLI mode: `--before|-b "DATE[ TIME]"
-   TODOs, still to be ported from the HTML-mode timeline:
    -   circa=DATETIME
    -   tag=string
    -   related=tag name
    -   string=search string

<a id="branch"></a>
# Branch Timeline

**Status:** partially implemented but undocumented because the utility
of the current impl is under question. It also doesn't understand most
of the common timeline options.

<a id="checkin"></a>
# Checkin Timeline

**Status:** implemented 201109xx

**Required privileges:** "o"

**Request:** `/json/timeline/checkin`

**Response payload example:**

```json
{
"limit": number, /* if not set, all records are returned */
"timeline":[{
  "uuid":"be700e84336941ef1bcd08d676310b75b9070f43",
  "timestamp":1317094090,
  "comment":"Added /json/timeline/ci showFiles to ajax test page.",
  "user":"stephan",
  "isLeaf":true,
  "bgColor":null, /* not quite sure why this is null? */
  "type":"ci",
  "parents": ["primary parent hash", "...other parent hashes"],
  "tags":["json"],
  "files":[{
    "name":"ajax/index.html",
    "uuid":"9f00773a94cea6191dc3289aa24c0811b6d0d8fe",
    "parent":"50e337c33c27529e08a7037a8679fb84b976ad0b",
    "state":"modified"
   }]
 },...]
}
```

(Achtung: the `parents` property was called `prevUuid` prior to 20120316.)

The `parents` property lists the checkins which were parents of this
commit. The first entry in the array is the "primary parent" - the one
which was not involved in a merge with the child.

**Request options:**

-   `files=bool` toggles the addition of a "files" array property which
    contains objects describing the files changed by the commit,
    including their hash, previous hash, and state change type
    (modified, added, or removed). ([“uuid†here means hash][uvh])\  
    CLI mode: `--show-files|-f`
-   `tag|branch=string` selects only entries with the given tag or "close
    to" the given branch. Only one of these may be specified and if both
    are specified, which one takes precedence is unspecified. If the
    given tag/branch does not exist, an error response is generated. The
    difference between the two is subtle - tag filters only on the given
    tag (analog to the HTML interface's "r" option) whereas branch can
    also return entries from other branches which were merged into the
    requested branch (analog to the HTML interface's "b" option). If one
    of these is specified, the response payload will contain a "tag"
    *or* "branch" property with the tag/branch name given by the client.

<a id="technote"></a>
# Technote (formerly Event) Timeline

**Status:** implemented 20180803

**Required privileges:** "j"

**Request:**

- `/json/timeline/technote`
- DEPRECATED: `/json/timeline/event` (technotes were formerly called `events`)

**Response payload example:**

```json
{
"limit": number, /* if not set, all records are returned */
"timeline":[{
  "name":"8d18bf27e9f9ff8b9017edd55afc35701407d418",
  "uuid":"b23962c88c123924a77fd663e91af094780d920a",
  "timestamp":1478376113,
  "comment":"Style update due to [8d880f0bb4]",
  "user":"andygoth",
  "eventType":"e"
 },...]
}
```

The `uuid` of each entry can be passed to `/json/artifact` to fetch the raw
event content.

<a id="ticket"></a>
# Ticket Timeline

**Status:** implemented 201109xx

**Required privileges:** "r" or "o"

**Request:** `/json/timeline/ticket`

**Response payload example:**

```json
{
  "limit": number, /* if not set, all records are returned */
  "timeline":[{
    "uuid":"5065a5da060e181da49a618f8ae5dc245215e95b",
    "timestamp":1316511322,
    "user":"stephan",
    "eventType":"t",
    "comment":"Ticket [b64435dba9] &lt;i&gt;How to...&lt;/i&gt;",
    "briefComment":"Ticket [b64435dba9]: 2 changes",
    "ticketUuid":"b64435dba9cceb709bd54fbc5883884d73f93491"
  },...]
}
```

**Notice that there are two [hashes][uvh] for tickets** - `uuid` is the change
hash and `ticketUuid` is the actual ticket’s hash. This is an unfortunate
discrepancy vis-a-vis the other timeline entries, which only have one
hash. We may want to swap `uuid` to mean the ticket hash and change `uuid`
to `commitHash`.

<a id="wiki"></a>
# Wiki Timeline

**Status:** implemented 201109xx

**Required privileges:** "j" or "o"

**Requests:**

-   `/json/timeline/wiki`
-   `/json/wiki/timeline` (alias)

**Response payload example:**

```json
{
"limit": number, /* if not set, all records are returned */
"timeline":[{
  "uuid":"4b2026f06eb48eaf187209fcb05ba5438c3b0ef0",
  "timestamp":1331351121,
  "comment":"Changes to wiki page [Page3]",
  "user":"stephan",
  "eventType":"w"
 },...]
}
```

The `uuid` of each entry can be passed to `/json/artifact` or
`/json/wiki/get?uuid=...` to fetch the raw page and the hash of the
parent version.

[uvh]: ../hashes.md#uvh
Added www/json-api/api-user.md.














































































































































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# JSON API: /user
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Get User Info](#get)
* [List Users](#list)
* [Save User](#save)

---

<a id="get"></a>
# Get User Info

**Status:** implemented 20110927.

**Required privileges:** "a" or "s"

**Request:**

-   POST `/json/user/get`\  
    with `POST.payload.name=USERNAME`
-   `/json/user/get?name=USERNAME`

**Response payload example:**

```json
{
  "uid":1,
  "name":"stephan",
  "capabilities":"abcdefhgijkmnopqrstuvwxz",
  "info":"https://wanderinghorse.net/home/stephan/",
  "timestamp":1316122562
}
```

(What does that timestamp field represent, anyway?)

<a id="list"></a>
# List Users

**Status:** implemented 20110927.

**Required privileges:** "a" or "s"

**Request:** `/json/user/list`

**Response payload example:**

```json
[
 {
  "uid":1,
  "name":"stephan",
  "capabilities":"abcdefhgijkmnoprstuvwxz",
  "info":"",
  "timestamp":1316122562
 },
 ... more users...
]
```


<a id="save"></a>
# Save User

Only admin/setup users may modify accounts other than their own.

**Status:** implemented 20111021 *but* it is missing "login group"
support, so changes do not yet propagate to other repos within a group.

**Required privileges:** 'p' or 'a' or 's', depending on the context.

**Request:** `/json/user/save`

All request options must come from the `POST.payload` and/or GET/CLI
parameters (exception: "name" must come from POST.payload or CLI).
GET/CLI parameters take precedence over those in `POST.payload`, the
intention being to use an input file as a template and overriding the
template's defaults via the CLI. The options include:

-   `name=string` Specifies the user name to change. When changing a
    user's name, the current uid and the new name must be specified.\  
    **Achtung:** due to fossil-internal ambiguity in the handling of the
    "name" parameter, this parameter must come from the `POST.payload`
    data or it will not be recognized. In CLI mode it may be specified
    with the `--name` flag.
-   `uid=int` Specifies the uid to change. At least one of uid or name are
    required. A uid of -1 means to create a new user, in which case the
    name must be provided.
-   `password=string` Optionally changes the user's password. When
    renaming existing or creating new users, be sure to always provide a
    new password because any old password hash is invalidated by the
    name change.
-   `info=string` Optionally changes the user's info field.
-   `capabilities=string` Optionally changes the user's capabilities
    field.
-   `forceLogout=bool` (=false, or true when renaming) Optionally clears
    any current login info for the current user, which will invalidate
    any active session. Requires 'a' or 's' privileges. Intended to be
    used when disabling a user account, to ensure that any open session
    is invalidated. When a user is renamed this option is implied (and
    cannot be disabled) because renaming invalidates any currently
    stored auth token (because the old name is part of the hash
    equation).

Fields which are not provided in the request will not be modified.
Non-admin/setup users cannot edit other users and may only change their
own data if they have the 'p' (password) privilege.

As of 20120217, users who do not have the setup privilege may neither
change the setup privilege for any user nor edit another user who has
that privilege. That is, only users with setup access may propagate or
remove setup status and accounts with the setup privilege may only be
edited by themselves and other setup users.

**Response payload:** Same as user/get, using the new/saved state of the
modified user.

Example usage from the command line:

```console
$ fossil json user save --name drh --password sqlite3 \
 --capabilities "as" --info "DRH"
$ fossil json user save --uid 1 --name richard \
 --password fossil \
 --info "Previously known as drh"
```

**Warnings:**

-   When creating a new user or renaming a user, if no (new) password is
    specified in the save request then the user will not be able to log
    in because the previous password (for existing users) is hashed
    against the old name.
-   Renaming a user invalidates any active login token because his old
    name is a part of the hash. i.e. the user must log back in with the
    new name after being renamed.

**TODOs:**

-   Login group support.
Added www/json-api/api-version.md.
































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# JSON API: /version
([&#x2b11;JSON API Index](index.md))

# Version (a.k.a. HAI)

**Status:** implemented

**Required privileges:** none

**Requests:**

-   `/json/version`
-   `/json/HAI` (alias borrowed from LOLCATZ jargon)

**Response payload example:**

```json
{
"manifestUuid":"20ff808f9809541d2eca6c49a17d5cbd16e1b93f",
"manifestVersion":"[20ff808f98]",
"manifestDate":"2011-09-09 16:49:23",
"manifestYear":"2011",
"releaseVersion":"1.19",
"releaseVersionNumber":119,
"jsonApiVersion": "YYYYMMDD" // added 20120409
}
```

Those particular payload fields were chosen only because they're defined
in `VERSION.h`. We may want to add other information, but nothing comes to
mind at this time.

Added www/json-api/api-wiki.md.





















































































































































































































































































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# JSON API: /wiki
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Page List](#list)
* [Fetch a Page](#get)
* [Create or Save Page](#create-save)
* [Wiki Diffs](#diffs)
* [Preview](#preview)
* [Notes and TODOs](#todo)

---

<a id="list"></a>
# Page List

Returns a list of all pages, not including their content (which can be
arbitrarily large).

**Status:** implemented 201109xx

**Required privileges:** "j" or "o"

**Request:** `/json/wiki/list`

**Options:**

-   `bool verbose` (=false) Changes the results to return much more
    information. Added 20120219.
-   `glob=wildcard` string (default=`*`). If set, only page names
    matching the given wildcard are returned. Added 20120325.\  
    CLI: `--glob|-g STRING`
-   `like=SQL LIKE string` (default=`%`). If set, only page names matching
    the given SQL LIKE string are returned. Note that this match is
    case-INsensitive. If both glob and like are given then only one will
    work and which one takes precedence is unspecified. Added 20120325.\  
    CLI: `--like|-l STRING`
-   `invert=bool` (default=false). If set to a true value, the glob/like
    filter has a reverse meaning (pages *not* matching the wildcard are
    returned). Added 20120329.\  
    CLI: `-i/--invert`

**Response payload: format depends on "verbose" option**

Non-verbose mode:

```json
["PageName1",..."PageNameN"]
```

In verbose mode:

```json
[{
"name":"Apache On Windows XP",
"uuid":"a7e68df71b95d35321b9d9aeec3c8068f991926c",
"user":"jeffrimko",
"timestamp":1310227825,
"size":793 /* in bytes */
},...]
```

The verbose-mode output is the same as the [`/json/wiki/get`](#get) output, but
without the content. The size property of each reflects the *byte*
length of the raw (non-HTMLized) page content.

**Potential TODOs:**

-   Allow specifying (in the request) a list/array of names, as opposed
    to listing all pages. The page count is rarely very high, though, so
    an "overload" is very unlikely. (i have one wiki with about 47 pages
    in it.)

<a id="get"></a>
# Fetch a Page

Fetches a single wiki page, including content and significant metadata.

**Status:** implemented 20110922, but response format may change.

**Required privileges:** "j" or "o"

**Request:**

-   GET: `/json/wiki/get?name=PageName`
-   GET: `/json/wiki/get/PageName`
-   POST: `/json/wiki/get` with page name as `POST.payload` or
    `POST.payload.name`.

**Response payload example:**

```json
{
"name": "Fossil",
"uuid": "...hex string...",
"parent": "uuid of parent (not set for first version of page)",
"user": "anonymous",
"timestamp": 1286143975,
"size": 1906, /* In bytes, not UTF8 characters!
                 Affected by format option! */
"content": "..."
}
```

**FIXME:** it's missing the mimetype (that support was added to fossil
after this was implemented).

If given no page to load, or if asked to get a page which does not
exist, an error response is generated (a usage- or resource-not-found
error, respectively).

**Options (via CLI/GET/`POST.payload`):**

- `name=string`. The page to fetch. The latest version is fetched
unless the uuid paramter is supplied (in which case name is ignored). \  
CLI: `--name|-n string`\  
Optionally, the name may be the 4th positional argument/request path element.
- `uuid=string`. Fetches a specific version. The name parameter is
ignored when this is specified.\  
CLI: `--uid|-u string`
- `format=string ("raw"|"html"|"none")` (default="raw"). Specifies the
format of the "content" payload value.\  
CLI: `--format|-f string` \  
The "none" format means to return no content. In that case the size
refers to the same size as the "raw" format.

**TODOs:**

-   Support passing an array of names in the request (and change
    response to return an array).

<a id="create-save"></a>
# Create or Save Page

**Status:** implemented 20110922.

**Required privileges:** "k" (save) or "f" (create)

**Request:**

-   `/json/wiki/create`
-   `/json/wiki/save`

These work only in HTTP mode, not CLI mode. (FIXME: now that we can
simulate POST from a file, these could be used in CLI mode.)

The semantic differences between save and create are:

-   Save will fail if the page doesn't already exist whereas create will
    fail if it does. The createIfNotExists option (described below) can
    be used to create new pages using the save operation.
-   The content property is optional for the create request, whereas it
    is required to be a string for save requests (but it *may* be an
    empty string). This requirement for save is *almost* arbitrary, and
    is intended to prevent accidental erasing of existing page content
    via API misuse.

**Response payload example:**

The same as for [`/json/wiki/get`](#get) but the page content is not
included in the response (only the metadata).

**Request options** (via GET or `POST.payload` object):

-   `name=string` specifies the page name.
-   `content=string` is the body text.\  
    Content is required for save (unless `createIfNotExists` is true *and*
    the page does not exist), optional for create. It *may* be an empty
    string.
-   `mimetype=string` specifies the mimetype for the body, noting any any
    unrecognized/unsupported mimetype is silently treated as
    `text/x-fossil-wiki`.
-   Save (not create) supports a `createIfNotExists` boolean option which
    makes it a functional superset of the create/save features. i.e. it
    will create if needed, else it will update. If createIfNotExists is
    false (the default) then save will fail if given a page name which
    does not refer to an existing page.
-   **TODO:** add `commitMessage` string property. The fossil internals
    don't have a way to do this at the moment (they can as of late 2019).
    Since fossil wiki commits have always had the same default commit message, this is not a
    high-priority addition. See:\  
    [](/doc/trunk/www/fileformat.wiki#wikichng)
-   **Potential TODO:** we *could* optionally also support
    multi-page saving using an array of pages in the request payload:\  
    `[… page objects … ]`



<a id="diffs"></a>
# Wiki Diffs

**Status:** implemented 20120304

**Required privileges:** "h"

**Request:**

-   `/json/wiki/diff[/version1_UUID/version2_UUID]`

**Response payload example:**

```json
{
  "v1":"e32ccdcda59e930c77c1e01cebace5d71253f621",
  "v2":"e15992f475760cdf3a9564d8f88cacb659ab4b07",
  "diff":"@@ -1,4 +1,9 @@...<SNIP>..."
}
```

**Options:**

-   `v1=uuid` and `v2=uuid` specify the two versions to diff, and are
    required parameters. They may optionally be specified as the two
    URL/CLI parameters following the "diff" sub-command/path.

This command does not verify that both UUIDs actually refer to the same
page name, but do verify that they refer to wiki content.

Trivia: passing the same UUIDs to the `/json/diff` command will produce
very different results - that one diffs the manifests of the commits.

**TODOs:**

-   Add options for changing the format of the diff, e.g. side-by-side
    and enabling the HTML markup supported by the main fossil HTML GUI.
-   Potentially do a name comparison to verify that the diff is against
    the same page. That said, when "renaming" pages it might be useful
    to diff two different pages.

<a id="preview"></a>
# Preview

**Status:** implemented 20120310

**Required privileges:** "k" (to limit its use to only those who can
edit wiki pages). This limitation is up for debate/reconsideration.

**Request:**

-   `/json/wiki/preview`

This command wiki-processes arbitrary text sent from the client. To help
curb potential abuse, its use is restricted to those with "k" access
rights.

The `POST.payload` property must be either:

1) A string containing Fossil wiki markup.

2) An Object with a `body` property holding the text to render and a
   `mimetype` property describing the wiki format:
   `text/x-fossil-wiki` (the default), `text/x-markdown`, or
   `text/plain`. Any unknown type is treated as `text/x-fossil-wiki`.

The response payload is a string containing the rendered page. Whether
or not "all HTML" is allowed depends on site-level configuration
options, and that changes how the input is processed.

Note that the links in the generated page are for the HTML interface,
and will not work as-is for arbitrary JSON clients. In order to
integrate the parsed content with JSON-based clients the HTML will
probably need to be post-processed, e.g. using jQuery to fish out the
links and re-map wiki page links to a JSON-capable page handler.


<a id="todo"></a>
# Notes and TODOs

-   When server-parsing the wiki content, the generated
    intra-wiki/intra-site links will only be useful in the context of
    the original fossil UI (or a work-alike), not arbitrary JSON
    client apps.

Potential TODOs:

-   `/wiki/history` analog to the [](/whistory) page.
Added www/json-api/conventions.md.









































































































































































































































































































































































































































































































































































































































































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# JSON API: General Conventions
([&#x2b11;JSON API Index](index.md))

Jump to:

* [JSON Property Naming](#property-names)
* [HTTP GET Requests](#http-get)
* [HTTP POST Requests](#http-post)
    * [POST Request Envelope](#request-envelope)
* [Request Parameter Data Types](#request-param-types)
* [Response Envelope](#response-envelope)
* [HTTP Response Headers](#http-response-header)
* [CLI vs. HTTP Mode](#cli-vs-http)
* [Simulating POSTed data](#simulating-post-data)
* [Indentation/Formatting of JSON Output](#json-indentation)
* [JSONP](#jsonp)
* [API Result Codes](#result-codes)

---

<a id="property-names"></a>
# JSON Property Naming

Since most JSON usage conventionally happens in JavaScript
environments, this API has (without an explicit decision ever having
been made) adopted the ubiquitous JavaScript convention of
`camelCaseWithStartingLower` for naming properties in JSON objects.

<a id="http-get"></a>
# HTTP GET Requests

Many (if not most) requests can be made via simple GET requests, e.g. we
*could* use any of the following patterns for a hypothetical JSON-format
timeline:

- `https://..../timeline/json`
- `/timeline?format=json`
- `/timeline?json=1`
- `/timeline.json`
- `/json/timeline?...options...`

The API settled on the `/json/...` convention, primarily because it
simplifies dispatching and argument-handling logic compared to the
`/[.../]foo.json` approach. Using `/json/...` allows us to unify that
logic for all JSON sub-commands, for both CLI and HTTP modes.

<a id="http-post"></a>
# HTTP Post Requests

Certain requests, mainly things like editing checkin messages and
committing new files entirely, require POST data. This is fundamentally
very simple to do - clients post plain/unencoded JSON using a common
wrapper envelope which contains the request-specific data to submit as
well as some request-independent information (like authentication data).

<a id="request-envelope"></a>
## POST Request Envelope

POST requests are sent to the same URL as their GET counterpart (if any,
else their own path), and are sent as plain-text/unencoded JSON wrapped
in a common request envelope with the following properties:

- `requestId`: Optional arbitrary JSON value, not used by fossil, but
  returned as-is in responses.
- `command`: Provides a secondary mechanism for specifying which JSON
  command should be run. A request path of /json/foo/bar is equivalent
  to a request with path=/json and command=foo/bar. Note that subpaths
  do not work this way. e.g. path=/json/foo, command=bar will not
  work, but path=/json, command=foo/bar will.  This option is
  particularly useful when generating JSON for piping in to CLI mode,
  but it also has some response-dispatching uses on the client side.
- `authToken`: Authentication token. Created by a login
  request. Determines what access rights the user has, and any given
  request may require specific rights. In principle this is required
  by any request which needs non-guest privileges, but cookie-aware
  clients do not manually need to track this (it is managed as a
  cookie by the agent/browser).
    - Note that when accessing fossil over a local server instance
    which was started with the `--localauth` flag, the `authToken`
    will be ignored and need not be sent with any requests. The user
    will automatically be given full privileges, as if they were
    using CLI mode.
- `payload`: Command-specific parameters. Most can optionally come in
  via GET parameters, but those taking complex structures expect them
  to be placed here.
- `indent`: Optionally specifies indentation for the output. 0=no
  indention. 1=a single TAB character for each level of
  indentation. >1 means that many spaces per level. e.g. indent=7
  means to indent 7 spaces per object/array depth level. cson also
  supports other flags for fine-tuning the output spacing, and adding
  them to this interface might be interesting at some
  point. e.g. whether or not to add a newline to the output.  CLI mode
  adds extra indentation by default, whereas CGI/server modes produce
  unindented output by default.
- `jsonp`: Optional String (client function name). Requests which
  include this will be returned with `Content-Type
  application/javascript` and will be wrapped up in a function call
  using the given name. e.g. if `jsonp=foo` then the result would look like:\  
`foo( {...the response envelope...} )`

The API allows most of those (normally all but the payload) to come in
as either GET parameters or properties of the top-level POSTed request
JSON envelope, with GET taking priority over POST. (Reminder to self: we
could potentially also use values from cookies. Fossil currently only
uses 1 cookie (the login token), and I'd prefer to keep it that way.)

POST requests without such an envelope will be rejected, generating a
Fossil/JSON error response (as opposed to an HTTP error response). GET
requests, by definition, never have an envelope.

POSTed client requests *must* send a Content-Type header of either
`application/json` , `application/javascript`, or `text/plain`, or the
JSON-handling code will never see the POST data. The POST handler
optimistically assumes that type `text/plain` "might be JSON", since
`application/json` is a newer convention which many existing clients
do not use (as of the time these docs were written, back in 2011).

## POST Envelope vs. `POST.payload`


When this document refers to POST data, it is referring to top-level
object in JSON-format POSTed input data. When we say `POST.payload` we
refer to the "payload" property of the POST data. While fossil's core
handles *form-urlencoded* POST data, if such data is sent in then
parsing it as JSON cannot succeed, which means that (at worst) the
JSON-mode bits will "not see" any POST data. Data POSTed to the JSON API
must be sent non-form-urlencoded (i.e. as plain text).

Framework-level configuration options are always set via the top-level
POST envelope object or GET parameters. Request-specific options are set
either in `POST.payload` or GET parameters (though the former is required
in some cases). Here is an example which demonstrates the possibly
not-so-obvious difference between the two types of options (framework
vs. request-specific):

```json
{
"requestId":"my request", // standard envelope property (optional)
"command": "timeline/wiki", // also standard
"indent":2, // output indention is a framework-level option
"payload":{ // *anything* in the payload is request-specific
   "limit":1
}
}
```

When a given parameter is set in two places, e.g. GET and POST, or
POST-from-a-file and CLI parameters, which one takes precedence
depends on the concrete command handler (and may be unspecified). Most
will give precedence to CLI and GET parameters, but POSTed values are
technically preferred for non-string data because no additional "type
guessing" or string-to-whatever conversion has to be made (GET/CLI
parameters are *always* strings, even if they look like a number or
boolean).


<a id="request-param-types"></a>
# Request Parameter Data Types

When parameters are sent in the form of GET or CLI arguments, they are
inherently strings. When they come in from JSON they keep their full
type (boolean, number, etc.). All parameters in this API specify what
*type* (or types) they must (or may) be. For strings, there is no
internal conversion/interpretation needed for GET- or CLI-provided
parameters, but for other types we sometimes have to convert strings to
other atomic types. This section describes how those string-to-whatever
conversions behave.

No higher-level constructs, e.g. JSON **arrays** or **objects**, are
accepted in string form. Such parameters must be set in the POST
envelope or payload, as specified by the specific API.

This API does not currently use any **floating-point** parameters, but
does return floating-point results in a couple of places.

For **integer** parameters we use a conventional string-to-int algorithm
and assume base 10 (analog to atoi(3)). The API may err on the side of
usability when given technically invalid values. e.g. "123abc" will
likely be interpreted as the integer 123. No APIs currently rely on
integer parameters with more than 32 bits (signedness is call-dependent
but few, if any, use negative values).

**Boolean** parameters are a bit schizophrenic...

In **CLI mode**, boolean flags do not have a value, per se, and thus
require no string-to-bool conversion. e.g.
`fossil foo -aBoolOpt -non-bool-opt value`.

Those which arrive as strings via **GET parameters** treat any of the
following as true: a string starting with a character in the set
`[1-9tT]`. All other string values are considered to be false for this
purpose.

Those which are part of the **POST data** are normally (but not always -
it depends on the exact context) evaluated as the equivalent of
JavaScript booleans. e.g. if we have `POST.envelope.foo="f"`, and evaluate
it as a JSON boolean (as opposed to a string-to-bool conversion), the
result will be true because the underlying JSON API follows JavaScript
semantics for any-type-to-bool conversions. As long as clients always
send "proper" booleans in their POST data, the difference between
GET/CLI-provided booleans should never concern them.

TODO: consider changing the GET-value-to-bool semantics to match the JS
semantics, for consistency (within the JSON API at least, but that might
cause inconsistencies vis-a-vis the HTML interface).

<a id="response-envelope"></a>
# Response Envelope

Every response comes in the form of an HTTP response or (in CLI mode)
JSON sent to stdout. The body of the response is a JSON object following
a common envelope format. The envelope has the following properties:


- `fossil`: Fossil server version string. This property is basically
  "the official response envelope marker" - if it is set, clients can
  "probably safely assume" that the object indeed came from one of the
  Fossil/JSON APIs. This API never creates responses which do not
  contain this property.
- `requestId`: Only set if the request contained it, and then it is
  echoed back to the caller as-is. This can be used to determine
  (client-side) which request a given response is coming in for
  (assuming multiple asynchronous requests are pending). In practice
  this generally isn’t needed because response handling tends to be
  done by closures associated with the original request object (at
  least in JavaScript code). In languages without closures it might
  have some use. It may be any legal JSON value - it need not be
  confined to a string or number.
- `resultCode`: Standardized result code string in the form
  `FOSSIL-####`. Only error responses contain a `resultCode`.
- `resultText`: Possibly a descriptive string, possibly
  empty. Supplements the resultCode, but can also be set on success
  responses (but normally isn't). Clients must not rely on any
  specific values being set here.
- `payload`: Request-specific response payload (data type/structure is
  request-specific).  The payload is never set for error responses,
  only for success responses (and only those which actually have a
  payload - not all do).
- `timestamp`: Response timestamp (GMT Unix Epoch). We use seconds
  precision because I did not know at the time that Fossil actually
  records millisecond precision.
- `payloadVersion`: Not initially needed, but reserved for future use
  in maintaining version compatibility when the format of a given
  response type's payload changes. If needed, the "first version"
  value is assumed to be 0, for semantic [near-]compatibility with the
  undefined value clients see when this property is not set.
- `command`: Normalized form of the command being run. It consists of
  the "command" (non-argument) parts of the request path (or CLI
  positional arguments), excluding the initial "/json/" part. e.g. the
  "command" part of "/json/timeline/checkin?a=b" (CLI: json timeline
  checkin...)  is "timeline/checkin" (both in CLI and HTTP modes).
- `apiVersion`: Not yet used, but reserved for a numeric value which
  represents the JSON API's version (which can be used to determine if
  it has a given feature or not). This will not be implemented until
  it's needed.
- `warnings`: Reserved for future use as a standard place to put
  non-fatal warnings in responses. Will be an array but the warning
  structure/type is not yet specified. Intended primarily as a
  debugging tool, and will "probably not" become part of the public
  client interface.
- `g`: Fossil administrators (those with the "a" or "s" permissions)
  may set the `debugFossilG` boolean request parameter (CLI:
  `--json-debug-g`) to enable this property for any given response. It
  contains a good deal of the server-side internal state at the time
  the response was generated, which is often useful in debuggering
  problems. Trivia: it is called "g" because that's the name of
  fossil's internal global state object.
- `procTimeMs`: For debugging only - generic clients must not rely on
  this property. Contains the number of milliseconds the JSON command
  processor needed to dispatch and process the command. TODO: move the
  timer into the fossil core so that we can generically time its
  responses and include the startup overhead in the time calculation.



<a id="http-response-header"></a>
# HTTP Response Headers

The Content-Type HTTP header of a response will be either
application/json, application/javascript, or text/plain, depending on
whether or not we are in JSONP mode or (failing that) the contents of
the "Accept" header sent in the request. The response type will be
text/plain if it cannot figure out what to do. The response's
Content-Type header *may* contain additional metadata, e.g. it might
look like: application/json; charset=utf-8

Apropos UTF-8: note that JSON is, by definition, Unicode and recommends
UTF-8 encoding (which is what we use). That means if your console cannot
handle UTF-8 then using this API in CLI mode might (depending on the
content) render garbage on your screen.


<a id="cli-vs-http"></a>
# CLI vs. HTTP Mode

CLI (command-line interface) and HTTP modes (CGI and standalone server)
are consolidated in the same implementations and behave essentially
identically, with only minor exceptions.

An HTTP path of `/json/foo` translates to the CLI command `fossil json
foo`. CLI mode takes options in the fossil-convention forms (e.g. `--foo 3`
or `-f 3`) whereas HTTP mode takes them via GET/POST data (e.g. `?foo=1`).
(Note that per long-standing fossil convention CLI parameters taking a
value do not use an equal sign before the value!)

For example:

-   HTTP: `/json/timeline/wiki?after=2011-09-01&limit=3`
-   CLI: `fossil json timeline wiki --after 2011-09-01 --limit 3`

Some commands may only work in one mode or the other (for various
reasons). In CLI mode the user automatically has full setup/admin
access.

In HTTP mode, request-specific options can also be specified in the
`POST.payload` data, and doing so actually has an advantage over
specifying them as URL parameters: posting JSON data retains the full
type information of the values, whereas GET-style parameters are always
strings and must be explicitly type-checked/converted (which may produce
unpredictable results when given invalid input). That said, oftentimes
it is more convenient to pass the options via URL parameters, rather
than generate the request envelope and payload required by POST
requests, and the JSON API makes some extra effort to treat GET-style
parameters type-equivalent to their POST counterparts. If a property
appears in both GET and `POST.payload`, GET-style parameters *typically*
take precedence over `POST.payload` by long-standing convention (=="PHP
does it this way by default").

(That is, however, subject to eventual reversal because of the
stronger type safety provided by POSTed JSON. Philosophically
speaking, though, GET *should* take precedence, in the same way that
CLI-provided options conventionally override app-configuration-level
options.)

One notable functional difference between CLI and HTTP modes is that in
CLI mode error responses *might* be accompanied by a non-0 exit status
(they "should" always be, but there might be cases where that does not
yet happen) whereas in HTTP mode we always try to exit with code 0 to
avoid generating an HTTP 500 ("internal server error"), which could keep
the JSON response from being delivered. The JSON code only intentionally
allows an HTTP 500 when there is a serious internal error like
allocation or assertion failure. HTTP clients are expected to catch
errors by evaluating the response object, not the HTTP result code.

<a id="simulating-post-data"></a>
# Simulating POSTed data

We have a mechanism to feed request data to CLI mode via
files (simulating POSTed data), as demonstrated in this example:

```console
$ cat in.json
{ "command": "timeline/wiki", "indent":2, "payload":{"limit":1}}
$ fossil json --json-input in.json # use filename - for stdin
```

The above is equivalent to:

```console
$ echo '{"indent":2, "payload":{"limit":1}}' \
 | fossil json timeline wiki --json-input -
```

Note that the "command" JSON parameter is only checked when no json
subcommand is provided on the CLI or via the HTTP request path. Thus we
cannot pass the CLI args "json timeline" in conjunction with a "command"
string of "wiki" this way.

***HOWEVER...***

Much of the existing JSON code was written before the `--json-input`
option was possible. Because of this, there might be some
"misinteractions" when providing request-specific options via *both*
CLI options and simulated POST data. Those cases will eventually be
ironed out (with CLI options taking precedence). Until then, when
"POSTing" data in CLI mode, for consistent/predictible results always
provide any options via the JSON request data, not CLI arguments. That
said, there "should not" be any blatant incompatibilities, but some
routines will prefer `POST.payload` over CLI/GET arguments, so there
are some minor inconsistencies across various commands with regards to
which source (POST/GET/CLI) takes precedence for a given option. The
precedence "should always be the same," but currently cannot be due to
core fossil implementation details (the internal consolidation of
GET/CLI/POST vars into a single set).


<a id="json-indentation"></a>
# Indentation/Formatting of JSON Output

CLI mode accepts the `--indent|-I #` option to set the indention level
and HTTP mode accepts `indent=#` as a GET/POST parameter. The semantics
of the indention level are derived from the underlying JSON library and
have the following meanings: 0 (zero) or less disables all superfluous
indentation (this is the default in HTTP mode). A value of 1 uses 1 hard
TAB character (ASCII 0x09) per level of indention (the default in CLI
mode). Values greater than 1 use that many whitespaces (ASCII 32d) per
level of indention. e.g. a value of 7 uses 7 spaces per level of
indention. There is no way to specify one whitespace per level, but if
you *really* want one whitespace instead of one tab (same data size) you
can filter the output to globally replace ASCII 9dec (TAB) with ASCII
32dec (space). Because JSON string values *never* contain hard tabs
(they are represented by `\t`) there is no chance that such a global
replacement will corrupt JSON string contents - only the formatting will
be affected.

Potential TODO: because extraneous indention "could potentially" be used
as a form of DoS, the option *might* be subject to later removal from HTTP
mode (in CLI it's fine).

In HTTP mode no trailing newline is added to the output, whereas in CLI
mode one is normally appended (exception: in JSONP mode no newline is
appended, to (rather pedantically and arbitraily) allow the client to
add a semicolon at the end if he likes). There is currently no option to
control the newline behaviour, but the underlying JSON code supports
this option, so adding it to this API is just a matter of adding the
CLI/HTTP args for it.

Pedantic note: internally the indention level is stored as a single
byte, so giving large indention values will cause harmless numeric
overflow (with only cosmetic effects), meaning, e.g., 257 will overflow
to the value 1.

Potential TODO: consider changing cson's indention mechanism to use a
*signed* number, using negative values for tabs and positive for
whitespace count (or the other way around). This would require more
doc changes than code changes :/.


<a id="jsonp"></a>
# JSONP

The API supports JSONP-style output. The caller specifies the callback
name and the JSON response will be wrapped in a function call to that
name. For HTTP mode pass the `jsonp=string` option (via GET or POST
envelope) and for CLI use `--jsonp string`.

For example, if we pass the JSONP name `myCallback` then a response will
look like:

```js
myCallback({...response...})
```

Note that fossil does not evaluate the callback name itself, other than
to verify that it is-a string, so "garbage in, garbage out," and all
that. (Remember that CLI and GET parameters are *always* strings, even
if they *look* like numbers.)


<a id="result-codes"></a>
# API Result Codes

Result codes are strings which tell the client whether or not a given
API call succeeded or failed, and if it failed *perhaps* some hint as to
why it failed.

The result code is available via the resultCode property of every
*error* response envelope. Since having a result code value for success
responses is somewhat redundant, success responses contain no resultCode
property. In practice this simplifies error checking on the client side.

The codes are strings in the form `FOSSIL-####`, where `####` is a
4-digit integral number, left-padded with zeros. The numbers follow
these conventions:

-   The number 0000 is reserved for the "not an error" (OK) case. Since
    success responses do not contain a result code, clients won't see
    this value (except in documentation).
-   All numbers with a leading 0 are reserved for *potential* future use
    in reporting non-fatal warnings.
-   Despite *possibly* having leading zeros, the numbers are decimal,
    not octal. Script code which uses eval() or similar to produce
    integers from them may need to take that into account.
-   The 1000ths and 100ths places of the number describe the general
    category of the error, e.g. authentication- vs. database- vs. usage
    errors. The 100ths place is more specific than the 1000ths place,
    allowing two levels of sub-categorization (which "should be enough"
    for this purpose). This separation allows the server administrator
    to configure the level of granularity of error reporting. e.g. some
    admins consider error messages to be security-relevant and like to
    "dumb them down" on their way to the client, whereas developers
    normally want to see very specific error codes when tracking down a
    problem. We can offer a configuration option to "dumb down" error
    codes to their generic category by simply doing a modulo 100
    (or 1000) against the native error code number. e.g. FOSSIL-1271
    could (via a simple modulo) be reduced to FOSSIL-1200 or
    FOSSIL-1000, depending on the paranoia level of the sysadmin. I have
    tried to order the result code numbers so that a dumb-down level of
    2 provides reasonably usable results without giving away too much
    detail to malicious clients.\
    (**TODO:** `g.json.errorDetailParanoia` is used to set the
    default dumb-down level, but it is currently set at compile-time.
    It needs to be moved to a config option. We have a chicken/egg scenario
    with error reporting and db access there (where the config is
    stored).)
-   Once a number is assigned to a given error condition (and actually
    used somewhere), it may not be changed/redefined. JSON clients need
    to be able to rely on stable result codes in order to provide
    adequate error reporting to their clients, and possibly for some
    error recovery logic as well (i.e. to decide whether to abort or
    retry).

The *tentative* list of result codes is shown in the following table.
These numbers/ranges are "nearly arbitrarily" chosen except for the
"special" value 0000.

**Maintenance reminder:** these codes are defined in
[`src/json_detail.h`](/finfo/src/json_detail.h) (enum
`FossilJsonCodes`) and assigned default `resultText` values in
[`src/json.c:json_err_cstr()`](/finfo/src/json.c). Changes there need
to be reflected here (and vice versa). Also, we have assertions in
place to ensure that C-side codes are in the range 1000-9999, so do
not just go blindly change the numeric ranges used by the enum.


**`FOSSIL-0###`: Non-error Category**

- `FOSSIL-0000`: Success/not an error. Succesful responses do not
  contain a resultCode, so clients should never see this.
- `FOSSIL-0###`: Reserved for potential future use in reporting
  non-fatal warnings.



**`FOSSIL-1000`: Generic Errors Category**

- `FOSSIL-1101`: Invalid request. Request envelope is invalid or
  missing.
- `FOSSIL-1102`: Unknown JSON command.
- `FOSSIL-1103`: Unknown/unspecified error
- `FOSSIL-1104`: RE-USE
- `FOSSIL-1105`: A server-side timeout was reached. (i’m not sure we
  can actually implement this one, though.)
- `FOSSIL-1106`: Assertion failed (or would have had we
  continued). Note: if an `assert()` fails in CGI/server modes, the HTTP
  response will be code 500 (Internal Server Error). We want to avoid
  that and return a JSON response instead. All of that said - there seems
  to be little reason to implement this, since assertions are "truly
  serious" errors.
- `FOSSIL-1107`: Allocation/out of memory error. This cannot be reasonably
  reported because fossil aborts if an allocation fails.
- `FOSSIL-1108`: Requested API is not yet implemented.
- `FOSSIL-1109`: Panic! Fossil's `fossil_panic()` or `cgi_panic()` was
  called. In non-JSON HTML mode this produces an HTTP 500
  error. Clients "should" report this as a potential bug, as it
  "possibly" indicates that the C code has incorrect argument- or
  error handling somewhere.
- `FOSSIL-1110`: Reading of artifact manifest failed. Time to contact
  your local fossil guru.
- `FOSSIL-1111`: Opening of file failed (e.g. POST data provided to
  CLI mode).


**`FOSSIL-2000`: Authentication/Access Error Category**

- `FOSSIL-2001`: Privileged request was missing authentication
  token/cookie.
- `FOSSIL-2002`: Access to requested resource was denied. Oftentimes
  the `resultText` property will contain a human-language description of
  the access rights needed for the given command.
- `FOSSIL-2003`: Requested command is not available in the current
  operating mode. Returned in CLI mode by commands which require HTTP
  mode (e.g. login), and vice versa. FIXME: now that we can simulate
  POST in CLI mode, we can get rid of this distinction for some of the
  commands.
- `FOSSIL-2100`: Login Failed.
- `FOSSIL-2101`: Anonymous login attempt is missing the
  "anonymousSeed" property (fetched via [the `/json/anonymousPassword`
  request](api-auth.md#login-anonymous)). Note that this is more
  specific form of `FOSSIL-3002`.


ONLY FOR TESTING purposes should the remaning 210X sub-codes be
enabled (they are potentially security-relevant, in that the client
knows which part of the request was valid/invalid):

- `FOSSIL-2102`: Name not supplied in login request
- `FOSSIL-2103`: Password not supplied in login request
- `FOSSIL-2104`: No name/password match found


**`FOSSIL-3000`: Usage Error Category**

- `FOSSIL-3001`: Invalid argument/parameter type(s) or value(s) in
  request
- `FOSSIL-3002`: Required argument(s)/parameter(s) missing from
  request
- `FOSSIL-3003`: Requested resource identifier is ambiguous (e.g. a
  shortened hash that matches multiple artifacts, an abbreviated
  date that matches multiple commits, etc.)
- `FOSSIL-3004`: Unresolved resource identifier. A branch/tag/uuid
  provided by client code could not be resolved. This is a special
  case of #3006.
- `FOSSIL-3005`: Resource already exists and overwriting/replacing is
  not allowed. e.g. trying to create a wiki page or user which already
  exists. FIXME? Consolidate this and resource-not-found into a
  separate category for dumb-down purposes?
- `FOSSIL-3006`: Requested resource not found. e.g artifact ID, branch
  name, etc.


**`FOSSIL-4000`: Database-related Error Category**

- `FOSSIL-4001`: Statement preparation failed.
- `FOSSIL-4002`: Parameter binding failed.
- `FOSSIL-4003`: Statement execution failed.
- `FOSSIL-4004`: Database locked (this is not used anywhere, but
  reserved for future use).

Special-case DB-related errors...

- `FOSSIL-4101`: Fossil Schema out of date (repo rebuild required).
- `FOSSIL-4102`: Fossil repo db could not be found.
- `FOSSIL-4103`: Repository db is not valid (possibly corrupt).
- `FOSSIL-4104`: Check-out not found. This is similar to FOSSIL-4102
  but indicates that a local checkout is required (but was not
  found). Note that the 4102 gets triggered earlier than this one, and
  so can appear in cases when a user might otherwise expect a 4104
  error.


Some of those error codes are of course "too detailed" for the client to
do anything with (e.g.. 4001-4004), but their intention is to make it
easier for Fossil developers to (A) track down problems and (B) support
clients who report problems. If a client reports, "I get a FOSSIL-4000,
how can I fix it?" then the developers/support personnel can't say much
unless they know if it's a 4001, 4002, 4003, 4004, or 4101 (in which
case they can probably zero in on the problem fairly quickly, since they
know which API call triggered it and they know (from the error code) the
general source of the problem).

## Why Standard/Immutable Result Codes are Important

-   They are easily internationalized (i.e. associated with non-English
    error text)
-   Clients may be able to add automatic retry strategies for certain
    problem types by examining the result code. e.g. if fossil returns a
    locking or timeout error \[it currently does no special
    timeout/locking handling, by the way\] the client could re-try,
    whereas a usage error cannot be sensibly retried with the same
    inputs.
-   The "category" structure described above allows us some degree of
    flexibility in how detailed the reported errors are reported.
-   While the string prefix "FOSSIL-" on the error codes may seem
    superfluous, it has one minor *potential* advantage on the client
    side: when managing several unrelated data sources, these error
    codes can be immediately identified (by higher-level code which may
    be ignorant of the data source) as having come from the fossil API.
    Think "ORA-111" vs. "111".
Added www/json-api/hacking.md.

































































































































































































































































































































































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# JSON API: Hacker's Guide
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Before Committing Changes](#before-committing)
* [JSON C API](#json-c-api)
* [Reporting Errors](#reporting-errors)
* [Getting Command Arguments](#command-args)
* [Creating JSON Data](#creating-json)
    * [Creating JSON Values](#creating-json-values)
    * [Converting SQL Query Results to JSON](#query-to-json)

This section will only be of interest to those wanting to work on the
Fossil/JSON code. That said...

If you happen to hack on the code and find something worth noting here
for others, please feel free to expand this section. It will only
improve via feedback from those working on the code.

---

<a id="before-committing"></a>
# Before Committing Changes...

Because this code lives in the trunk, there are certain
guidelines which must be followed before committing any changes:

1.  Read the [checkin preparation list](/doc/trunk/www/checkin.wiki).
2.  Changes to the files `src/json_*.*`, and its related support code
    (e.g. `ajax/*.*`), may be made freely without affecting mainline
    users. Changes to other files, unless they are trivial or made for
    purposes outside the JSON API (e.g. an unrelated bug fix), must be
    reviewed carefully before committing. When in doubt, create a branch
    and post a request for a review.
3.  The Golden Rule is: *do not break the trunk build*.


<a id="json-c-api"></a>
# JSON C API

libcson, the underlying JSON API, is a separate project, included in
fossil in "amalgamation" form: see `extsrc/cson_amalgamation.[ch]`. It has
thorough API docs and a good deal of information is in its wiki:

[](https://fossil.wanderinghorse.net/wikis/cson/)

In particular:

[](https://fossil.wanderinghorse.net/wikis/cson/?page=CsonArchitecture)

gives an overview of its architecture. Occasionally new versions of it
are pulled into the Fossil tree, but other developers generally need not
concern themselves with that.

(Trivia: the cson wiki's back-end is fossil using this very JSON API,
living on top of a custom JavaScript+HTML5 application.)

Only a small handful of low-level fossil routines actually input or
output JSON text (only for reading in POST data and sending the
response). In the C code we work with the higher-level JSON value
abstractions provided by cson (conceptually similar to an XML DOM). All
of the JSON-defined data types are supported, and we can construct JSON
output of near arbitrary complexity with the caveat that *cyclic data
structures are strictly forbidden*, and *will* cause memory corruption,
crashes, double free()'s, or other undefined behaviour. Because JSON
cannot, without client-specific semantic extensions to JSON, represent
cyclic structures, it is not anticipated that this will be a
problem/limitation when generating output for fossil.



<a id="json-commands"></a>
# Architecture of JSON Commands

In order to consolidate CLI/HTTP modes for JSON handling, this code
foregoes fossil's conventional command/path dispatching mechanism. Only
the top-most "json" command/path is dispatched directly by fossil's
core. The disadvantages of this are that we lose fossil's conventional
help text mechanism (which is based on code comments in the
command/path's dispatcher impl) and the ability to write abbreviated
command names in CLI mode ("json" itself may be abbreviated, but not the
subcommands). The advantages are that we can handle CLI/HTTP modes
almost identically (there are a couple of minor differences) by unifying
them under the same callback functions much more easily.

The top-level "json" command/path uses its own dispatching mechanism
which uses either the path (in HTTP mode) or CLI positional arguments to
dispatch commands (stopping at the first "flag option" (e.g. -foo) in
CLI mode). The command handlers are simply callback functions which
return a cson\_value pointer (the C representation of an arbitrary JSON
value), representing the "payload" of the response (or NULL - not all
responses need a payload). On error these callbacks set the internal
JSON error state (detailed in a subsection below) and return NULL. The
top-level dispatcher then creates a response envelope and returns the
"payload" from the command (if any) to the caller. If a callback sets
the error state, the top-level dispatcher takes care to set the error
information in the response envelope. In summary:

-   The top-level dispatchers (`json_page_top()` and `json_cmd_top()`)
    are called by fossil's core when the "json" command/path is called.
    They initialize the JSON-mode global state, dispatch the requested
    command, and handle the creation of the response envelope. They
    prepare all the basic things which the individual subcommands need
    in order to function.
-   The command handlers (most are named `json_page_something()`)
    implement the `fossil_json_f()` callback interface (see
    [`src/json_detail.h`](/finfo/src/json_detail.h)). They are
    responsible for permissions checking, setting any error state, and
    passing back a payload (if needed - not all commands return a
    payload). It is strictly forbidden for these callbacks to produce
    any output on stdout/stderr, and doing so effectively corrupts the
    out-bound JSON and HTTP headers.

There is a wrench in all of that, however: the vast majority of fossil's
commands "fail fast" - they will `exit()` if they encounter an error. To
handle that, the fossil core error reporting routines have been
refactored a small bit to operate differently when we are running in
JSON mode. Instead of the conventional output, they generate a JSON
error response. In HTTP mode they exit with code 0 to avoid causing an
HTTP 500 error, whereas in CLI mode they will exit with a non-0 code.
Those routines still `exit()`, as in the conventional CLI/HTTP modes, but
they will exit differently. Because of this, it is perfectly fine for a
command handler to exit via one of fossil's conventional mechanisms
(e.g. `db_prepare()` can be fatal, and callbacks may call `fossil_panic()`
if they really want to). One exception is `fossil_exit()`, which does
_not_ generate any extra output and will `exit()` the app. In the JSON
API, as a rule of thumb, `fossil_exit()` is only used when we *want* a
failed request to cause an HTTP 500 error, and it is reserved for
allocation errors and similar truly catastrophic failures. That said...
libcson has been hacked to use `fossil_alloc()` and friends for memory
management, and those routines exit on error, so alloc error handling in
the JSON command handler code can afford to be a little lax (the
majority of *potential* errors clients get from the cson API have
allocation failure as their root cause).

As a side-note: the vast majority (if not all) of the cson API calls are
"NULL-safe", meaning that will return an error code (or be a no-op) if
passed NULL arguments. e.g. the following chain of calls will not crash
if the value we're looking for does not exist, is-not-a String (see
`cson_value_get_string()` for important details), or if `myObj` is NULL:

```c
const char * str =
 cson_string_cstr( // get the C-string form of a cson_string
   cson_value_get_string( // get its cson_string form
     cson_object_get(myObj,"foo") // search for key in an Object
   )
 );
```

If `"foo"` is not found in `myObj` (or if `myObj` is NULL) then v will be
NULL, as opposed to stepping on a NULL pointer somewhere in that call
chain.

Note that all cson JSON values except Arrays and Objects are *immutable*
- you cannot change a string's or number's value, for example. They also
use reference counting to manage ownership, as documented and
demonstrated on this page:

[](https://fossil.wanderinghorse.net/wikis/cson/?page=TipsAndTricks)

In short, after creating a new value you must eventually *either* add it
to a container (Object or Array) to transfer ownership *or* call
`cson_value_free()` to clean it up (exception: the Fossil/JSON command
callbacks *return* a value to transfer ownership to the dispatcher).
Sometimes it's more complex than that, but not normally. Any given value
may legally be stored in any number of containers (or multiple times
within one container), as long as *no cycles* are introduced (cycles
*will* cause undefined behaviour). Ownership is shared using reference
counting and the value will eventually be freed up when its last
remaining reference is freed (e.g. when the last container holding it is
cleaned up). For many examples of using cson in the context of fossil,
see the existing `json_page_xxx()` functions in `json_*.c`.

<a id="reporting-errors"></a>
# Reporting Errors

To report an error from a command callback, one abstractly needs to:

-   Set g.json.resultCode to one of the `FSL_JSON_E_xxx` values
    (defined in [`src/json_detail.h`](/finfo/src/json_detail.h)).
-   *Optionally* set `g.zErrMsg` to contain the (dynamically-allocated!)
    error string to be sent to the client. If no error string is set
    then a standard/generic string is used for the given error code.
-   Clean up any resources created so far by the handler.
-   Return NULL. If it returns non-NULL, the dispatcher will destroy the
    value and not include it in the error response.

That normally looks something like this:

```
if(!g.perm.Read){
  json_set_err(FSL_JSON_E_DENIED, "Requires 'o' permissions.");
  return NULL;
}
```

`json_set_err()` is a variadic printf-like function, and can use the
printf extensions supported by mprintf() and friends (e.g. `%Q` and `%q`)
(but they are normally not needed in the context of JSON). If the error
string is NULL or empty then `json_err_cstr(errorCode)` is used to fetch
the standard/generic error string for the given code.

When control returns to the top-level dispatching function it will check
`g.json.resultCode` and, if it is not 0, create an error response using
the `g.json.resultCode` and `g.zErrMsg` to construct the response's
`resultCode` and `resultText` properties.

If a function wants to output an error and exit by itself, as opposed
to returning to the dispatcher, then it must behave slightly
differently.  See the docs for `json_err()` (in
[`src/json.c`](/finfo/src/json.c)) for details, and search that file
for various examples of its usage. It is also used by fossil's core
error-reporting APIs, e.g. `fossil_panic()` (defined in [`src/main.c`](/finfo/src/main.c)).
That said, it would be "highly unusual" for a callback to need to do
this - it is *far* simpler (and more consistent/reliable) to set the
error state and return to the dispatcher.

<a id="command-args"></a>
# Getting Command Arguments

Positional parameters can be fetched usinig `json_command_arg(N)`, where
N is the argument position, with position 0 being the "json"
command/path. In CLI mode positional arguments have their obvious
meaning. In HTTP mode the request path (or the "command" request
property) is used to build up the "command path" instead. For example:

CLI: `fossil json a b c`

HTTP: `/json/a/b/c`

HTTP POST or CLI with `--json-input`: /json with POSTed envelope
`{"command": "a/b/c" …}`

Those will have identical "command paths," and `json_command_path(2)`
would return the "b" part.

Caveat: a limitation of this support is that all CLI flags must come
*after* all *non-flag* positional arguments (e.g. file names or
subcommand names). Any argument starting with a dash ("-") is considered
by this code to be a potential "flag" argument, and all arguments after
it are ignored (because the generic handling cannot know if a flag
requires an argument, which changes how the rest of the arguments need
to be interpreted).

To get named parameters, there are several approaches (plus some special
cases). Named parameters can normally come from any of the following
sources:

-   CLI arguments, e.g. `--foo bar`
-   GET parameters: `/json/...?foo=bar`
-   Properties of the POST envelope
-   Properties of the `POST.payload` object (if any).

To try to simplify the guessing process the API has a number of
functions which behave ever so slightly differently. A summary:

-   `json_getenv()` and `json_getenv_TYPE()` search the so-called "JSON
    environment," which is a superset of the GET/POST/`POST.payload` (if
    `POST.payload` is-a Object).
-   `json_find_option_TYPE()`: searches the CLI args (only when in CLI
    mode) and the JSON environment.
-   The use of fossil's `P()` and `PD()` macros is discouraged in JSON
    callbacks because they can only handle String data from the CLI or
    GET parameters (not POST/`POST.payload`). (Note that `P()` and `PD()`
    *normally* also handle POSTed keys, but they only "see" values
    posted as form-urlencoded fields, and not JSON format.)
-   `find_option()` (from `src/main.c`) "should" also be avoided in
    JSON API handlers because it removes flag from the g.argv
    arguments list. That said, the JSON API does use `find_option()` in
    several of its option-finding convenience wrappers.

For example code: the existing command callbacks demonstrate all kinds
of uses and the various styles of parameter/option inspection. Check out
any of the functions named `json_page_SOMETHING()`.

<a href="creating-json"></a>
# Creating JSON Data

<a href="creating-json-values"></a>
## Creating JSON Values

cson has a fairly rich API for creating and manipulating the various
JSON-defined value types. For a detailed overview and demonstration I
recommend reading:

[](https://fossil.wanderinghorse.net/wikis/cson/?page=HowTo)

That said, the Fossil/JSON API has several convenience wrappers to save
a few bytes of typing:

-   `json_new_string("foo")` is easier to use than
    `cson_value_new_string("foo", 3)`, and
    `json_new_string_f("%s","foo")` is more flexible.
-   `json_new_int()` is easier to type than `cson_value_new_integer()`.
-   `cson_output_Blob()` and `cson_parse_Blob()` can write/read JSON
    to/from fossil `Blob`-type objects.

It also provides several lower-level JSON features which aren't of
general utility but provide necessary functionality for some of the
framework-level code (e.g. `cson_data_dest_cgi()`), which is only used
by the deepest of the JSON internals).


<a href="query-to-json"></a>
## Converting SQL Query Results to JSON

The `cson_sqlite3_xxx()` family of functions convert `sqlite3_stmt` rows
to Arrays or Objects, or convert single columns to a JSON-compatible
form. See `json_stmt_to_array_of_obj()`,
`json_stmt_to_array_of_array()` (both in `src/json.c`), and
`cson_sqlite3_column_to_value()` and friends (in
`extsrc/cson_amalgamation.h`). They work in an intuitive way for numeric
types, but they optimistically/naively *assume* that any fields of type
TEXT or BLOB are actually UTF8 data, and treat them as such. cson's
string class only handles UTF8 data and it is semantically illegal to
feed them anything but UTF8. Violating this will likely result in
down-stream errors (e.g. when emitting the JSON string output). **The
moral of this story is:** *do not use these APIs to fetch binary data*.
JSON doesn't do binary and the `cson_string` class does not
protect itself against clients feeding it non-UTF8 data.

Here's a basic example of using these features:

```c
Stmt q = empty_Stmt;
cson_value * rows = NULL;
db_prepare(&q, "SELECT a AS a, b AS b, c AS c FROM foo");
rows = json_stmt_to_array_of_obj( &sql, NULL );
db_finalize(&q);
// side note: if db_prepare()/finalize() fail (==they exit())
// then a JSON-format error reponse will be generated.
```

On success (and if there were results), `rows` is now an Array value,
each entry of which contains an Object containing the fields (key/value
pairs) of each row. `json_stmt_to_array_of_array()` returns each row
as an Array containing the column values (with no column name
information).

**Note the seemingly superfluous use of the "AS" clause in the above
SQL.** Having them is actually significant! If a query does *not* use AS
clauses, the row names returned by the db driver *might* be different
than they appear in the query (this is documented behaviour of sqlite3).
Because the JSON API needs to return stable field names, we need to use
AS clauses to be guaranteed that the db driver will return the column
names we want. Note that the AS clause is often used to translate column
names into something more JSON-conventional or user-friendly, e.g.
"SELECT cap AS capabilities...". Alternately, we can convert the
individual `sqlite3_stmt` column values to JSON using
`cson_sqlite3_column_to_value()`, without referring directly to the
db-reported column name.
Added www/json-api/index.md.








































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# JSON API Index

This is the client-side documentation of Fossil's JSON API.  The JSON
API aims to provide access to many of the primary fossil features via
AJAX-style interfaces.

* [Introduction](intro.md)
* [General API Conventions](conventions.md)
* [Tips &amp; Tricks](tips.md)
* [Hacking Guide](hacking.md)

General warnings regarding the APIs linked to in the following list:

- **NOTE** that request/response examples shown in the individual API
pages do not show [the standard request/response envelope](conventions.md)
(for brevity and sanity).
- **Achtung:** just because a given feature is described as being
implemented does not mean that the implementation is "final" - it may be
changed at any time until we find/implement useful APIs.

The APIs, alphabetically by category:

* [Artifact Info](api-artifact.md)
* [Authentication](api-auth.md)
* [Branches](api-branch.md)
* [Checkout Status](api-checkout.md)
* [Config](api-config.md)
* [Diffs](api-diff.md)
* [Directory Listing](api-dir.md)
* [File Info](api-finfo.md)
* [The Obligatory Misc. Category](api-misc.md)
* [Repository Stats](api-stat.md)
* [Settings](api-settings.md)
* [SQL Query](api-query.md)
* [Tags](api-tag.md)
* [Tickets](api-ticket.md)
* [Timeline](api-timeline.md)
* [User Management](api-user.md)
* [Version](api-version.md)
* [Wiki](api-wiki.md)
Added www/json-api/intro.md.












































































































































































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# JSON API Introduction
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Why?](#why)
* [Building JSON Support](#builing)
* [Goals & Non-goals](#goals)
* [Potential Client-side Uses](#potential-uses)
* [Technical Problems and Considerations](#considerations)

---

<a id="why"></a>
# Why?

In September, 2011, Fossil contributor Stephan Beal had the great
pleasure of meeting D. Richard Hipp, Fossil's author, for lunch in
Munich, Germany. During the conversation Richard asked, "what does
Fossil need next?" Stephan's first answer was, "refactoring into a
library/client, as opposed to a monolithic app." We very quickly
agreed that the effort required would be "herculean," and second
choice was voiced, "a JSON API." They briefly discussed the idea and
Richard gave his blessing.  That night work began.

Why a JSON API? Because it is the next best thing to the
"librification" of Fossil, in that it makes Fossil's features
available to near-arbitrary applications using a simple, globally
available data format.

<a id="building"></a>
# Building JSON Support

In environments supported by fossil's `configure` script,
simply pass `--enable-json` to it:

```
$ ./configure --prefix=$HOME --enable-json ...
```

When built without that option, JSON support is disabled. **When
reconfiguring the source tree**, ***always be sure to do a "make
clean"*** (or equivalent for your platform) between builds (preferably
*before* reconfiguring), to ensure that everything is rebuilt properly.
If you fail to do that after enabling JSON on a tree which has already
been built, most of the sources will not be rebuilt properly. The reason
is that the JSON files are actually unconditionally compiled, but when
built without `--enable-json` they compile to empty object files. Thus
after a reconfigure the (empty) object files are still up-to-date
vis-a-vis the sources, and won't be rebuilt.

To build Fossil with JSON support on Windows using the Microsoft C
compiler:

```
cd win
nmake -f Makefile.msc FOSSIL_ENABLE_JSON=1
```

It has been seen to compile in VC versions 6 and higher.

<a id="goals"></a>
# Goals & Non-goals

The API described here is most certainly not
[*REST*](http://en.wikipedia.org/wiki/Representational_state_transfer)-conformant,
but is instead JSON over HTTP. The error reporting techniques of the
REST conventions (using HTTP error codes) "does not mesh" with my ideas
of separation of transport- vs. app-side errors. Additionally, REST
requires HTTP methods which are not specified by CGI (namely PUT and
DELETE), which means we can't possibly implement a REST-compatible
interface on top of fossil (which uses CGI mode even for its built-in
server).

The **overall goals** of this effort include:

-   A JSON-based API off of which clients can build customized Fossil
    UIs and special-purpose applications. e.g. a desktop notification
    applet which polls for new timeline data.
-   Arbitrary JSON-using clients should be able to use it. Though JSON
    originates from JavaScript, it is truly a cross-platform data format
    with a very high adoption rate. (There’s even a JSON implementation
    for Oracle PL/SQL.)
-   Fossil’s CGI and Server modes are the main targets and should be
    supported equally. CLI JSON mode is of secondary concern (but is in
    practice easier to test, so it’s generally implemented first).

The ***non-goals*** include:

-   We won’t be able to implement *every* feature of Fossil via a JSON
    interface, and we won’t try to.
-   Binary data (e.g. commits of binary files or downloading ZIP files)
    is not an initial goal, but "might be interesting" once the overall
    infrastructure is in place and working well. See below for more
    details about binary data in JSON.
-   A "pure REST" interface is seemingly not possible due to REST
    relying on HTTP methods not specified in the CGI standard (PUT and
    DELETE). Additionally, REST-style error reporting cannot be used by
    non-HTTP clients (which this code supports).

Adding JSON support also gives us a framework off of which to
build/enhance other features. Some examples include:

-   **Internationalization**. Errors are reported via standard codes and
    the raw artifact data is language-independent.
-   The ability to author **special-case clients**, e.g. a ticket
    poller.
-   Use **arbitrary HTTP-capable languages** to implement such tools.
    Programming languages which can execute programs and intercept their
    stdout output can use the JSON API via a local fossil binary.
-   **Automatable tests.** Many of fossil's test results currently have
    to be "visually reviewed" for correctness after changes (e.g.
    changes in the HTML interface). JSON structures can be
    programmatically checked for correctness. Artifacts are immutable,
    which allows us to be very specific in what data to expect as output
    (for artifact-specific requests the payload data will often (but not
    always) be the same across all requests and all time).

<a id="potential-uses"></a>
# Potential Client-side Uses

Some of the potential client-side uses of this API include...

-   Custom apps/applets to fetch timeline/ticket/etc. information from
    arbitrary repositories. There are many possibilities here, including
    "dashboard" sites which monitor several repositories.
-   Custom post-commit triggers, by polling for changes and reacting to
    them (e.g. sending mails).
-   A custom wiki front-end which uses fossil as the back-end storage,
    inheriting its versioning and user access support while providing a
    completely custom wiki-centric UI. Such a wiki need not have, on the
    surface, anything to do with fossil or source control, as fossil
    would just become a glorified wiki back-end. This approach also
    allows clients to serve wiki pages in a format of their choice -
    since all rendering would be done client-side, they could use
    whatever format they like.


<a id="considerations"></a>
# Technical Problems and Considerations

A random list of considerations which need to be made and potential
problem areas...

-   **Binary data:** JSON is a text serialization method, and it takes
    up the “payload†area of each HTTP request, so there is no
    reasonable way to include binary data in the JSON message without
    some sort of codec like Base64, for which there is no provision in
    the current JSON API. You will therefore find no JSON API for
    committing changes to a file in the repository, for example. Other
    Fossil APIs such as [`/raw`](/help?cmd=/raw) or
    [`/fileedit`](../fileedit-page.md) may serve you better.
-   **64-bit integers:** The JSON standard does not specify integer precision,
    because it targets many different platforms, and not all of
    them can support more than 32 bits. JavaScript (from which JSON
    derives) supports 53 bits of integer precision, which may affect how
    a given client-side JSON implementation sends large integers to Fossil’s JSON
    API. Our JSON parser can cope with integers larger than 32 bits on input, and it
    can emit them, but it requires platform support. If you’re running
    Fossil on a 64-bit host, you should not run into problems in
    this area, but if you’re on a legacy 32-bit only or a mixed 32/64-bit
    system, it’s possible that some integers in the API could be
    clipped. Realize however that this is a rare case: Fossil currently
    cannot store files large enough to exceed a 32-bit `size_t` value,
    and `time_t` won’t roll past 32-bit integers until 2038. We’re aware
    of no other uses of integers in this API that could even in
    principle exceed the range of a 32-bit integer.
-   **Timestamps:** For portability, this API uses UTC Unix epoch
    timestamps. (`time_t`) They are the most portable time representation out
    there, easily usable in most programming environments. (In
    hindsight, we might better have used a higher-precision time format,
    but changing that now would break API compatibility.)
Added www/json-api/tips.md.






































































































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# JSON API: Tips and Tricks
([&#x2b11;JSON API Index](index.md))

Jump to:

* [Beware of Content-Type and Encoding...](#content-type)
  * [Using `curl` and `wget`](#curl-wget)
* [Example JavaScript](#javascript)
* [Demo Apps](#demo-apps)

---

<a id="content-type"></a>
# Beware of Content-Type and Encoding...

When posting data to fossil, make sure that the request sends:

-   **Content-Type** of `application/json`. Fossil also (currently)
    accepts `application/javascript` and `text/plain` as JSON input,
    but `application/json` is preferred. The client may optionally
    send `;charset=utf-8` with the Content-Type, but any other
    encoding produces undefined results. Behaviour without the charset
    or with `;charset=utf-8` suffix is identical.
-   **POST data must be an non-form-encoded JSON string**
    (ASCII or UTF-8). jQuery, by default, form-urlencodes it, which the
    fossil json bits cannot read. e.g. post the result of
    `JSON.stringify(requestObject)`, without any additional encoding on
    top of it.
-   **When POSTing via jQuery**, set these AJAX options:
    -   `contentType:'application/json'`
    -   `dataType:'text'`
    -   `data:JSON.stringify(requestObject)`
-   **When POSTing via XMLHttpRequest** (XHR), be sure to:
    -   `xhr.open( … )`
    -   `xhr.setRequestHeader("Content-Type", "application/json")`
    -   `xhr.send( JSON.stringify( requestObject ) )`

The response will be (except in the case of an HTTP 500 error or
similar) a JSON or JSONP string, ready to be parsed by your favourite
`JSON.parse()` implementation or `eval()`'d directly.

<a id="curl-wget"></a>
## Using `curl` and `wget`

Both [curl](https://curl.haxx.se/) and
[wget](https://www.gnu.org/software/wget/) can be used to post data to
this API from the command line or scripts, but both require an extra
parameter to set the request encoding.

Example:

```console
$ cat x.json
{
"payload": {
  "sql": "SELECT * FROM reportfmt limit 1",
  "format": "o"
  }
}

# Fossil has been started locally with:
#   fossil server --localauth
# which allows the following requests to work without extra
# authenticaion:

$ wget -q -O- \
  --post-file=x.json \
  --header="Content-Type: application/json" \
  'http://localhost:8080/json/query'

$ curl \
  --data-binary @x.json \
  --header 'Content-Type: application/json' \
  'http://localhost:8080/json/query'
```

The relevant parts for encoding are the `--header` flag for `wget` and
`curl`, noting that they have different syntaxes for each
(`--header=X` vs `--header X`).

<a id="javascript"></a>
# Example JavaScript (Browser and Shell)

In the fossil source tree, [in the ajax directory](/dir/ajax), is test/demo code
implemented in HTML+JavaScript. While it is still quite experimental, it
demonstrates one approach to creating client-side wrapper APIs for
remote Fossil/JSON repositories.

There is some additional JS test code, which uses the Rhino JS engine
(i.e. from the console, not the browser), under
[`ajax/i-test`](/dir/ajax/-itest). That adds a Rhino-based connection
back-end to the AJAJ API and uses it for running integration-style
tests against an arbitrary JSON-capable repository.


<a id="demo-apps"></a>
# Demo Apps

Known in-the-wild apps using this API:

-   The wiki browsers/editors at [](https://fossil.wanderinghorse.net/wikis/)

Added www/loadmgmt.md.
































































































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# Managing Server Load

A Fossil server is very efficient and normally presents a very light
load on the server.  The Fossil [self-hosting server][sh] is a 1/24th
slice VM at [Linode.com][lin] hosting 65 other repositories in addition
to Fossil, including some very high-traffic sites such as
<http://www.sqlite.org> and <http://system.data.sqlite.org>. This small
VM has a typical load of 0.05 to 0.1. A single HTTP request to Fossil
normally takes less than 10 milliseconds of CPU time to complete, so
requests can be arriving at a continuous rate of 20 or more per second,
and the CPU can still be mostly idle.

However, there are some Fossil web pages that can consume large amounts
of CPU time, especially on repositories with a large number of files or
with long revision histories.  High CPU usage pages include
[`/zip`](/help/zip), [`/tarball`](/help/tarball),
[`/annotate`](/help/annotate), and others.  On very large repositories,
these commands can take 15 seconds or more of CPU time.  If these kinds
of requests arrive too quickly, the load average on the server can grow
dramatically, making the server unresponsive.

Fossil provides two capabilities to help avoid server overload problems
due to excessive requests to expensive pages:

1.  An optional cache is available that remembers the 10 most recently
    requested `/zip` or `/tarball` pages and returns the precomputed
    answer if the same page is requested again.

2.  Page requests can be configured to fail with a
    “[503 Server Overload][503]†HTTP error if any request is
    received while the host load average is too high.

Both of these load-control mechanisms are turned off by default, but
they are recommended for high-traffic sites. Users with [admin
permissions](caps/index.md) are exempt from these restrictions,
provided they are logged in before the load gets too high (login is
disabled under high load).

The webpage cache is activated using the [`fossil cache init`](/help/cache)
command-line on the server.  Add a `-R` option to
specify the specific repository for which to enable caching.  If running
this command as root, be sure to “`chown`†the cache database to give
the Fossil server write permission for the user ID of the web server;
this is a separate file in the same directory and with the same name as
the repository but with the “`.fossil`†suffix changed to “`.cache`â€.

To activate the server load control feature visit the Admin → Access
setup page in the administrative web interface; in the “**Server Load
Average Limit**†box enter the load average threshold above which “503
Server Overload†replies will be issued for expensive requests.  On the
self-hosting Fossil server, that value is set to 1.5, but you could
easily set it higher on a multi-core server.

The maximum load average can also be set on the command line using
commands like this:

    fossil setting max-loadavg 1.5
    fossil all setting max-loadavg 1.5

The second form is especially useful for changing the maximum load
average simultaneously on a large number of repositories.

Note that this load-average limiting feature is only available on
operating systems that support the [`getloadavg()`][gla] API.  Most
modern Unix systems have this interface, but Windows does not, so the
feature will not work on Windows.

Because Linux implements `getloadavg()` by accessing the `/proc/loadavg`
virtual file, you will need to make sure `/proc` is available to the
Fossil server. The most common reason for it to not be available is that
you are running a Fossil instance [inside a `chroot(2)`
jail](./chroot.md) and you have not mounted the `/proc` virtual file
system inside that jail. On the [self-hosting Fossil repositories][sh],
this was accomplished by adding a line to the `/etc/fstab` file:

    chroot_jail_proc /home/www/proc proc ro 0 0

The `/home/www/proc` pathname should be adjusted so that the `/proc`
component is at the root of the chroot jail, of course.

To see if the load-average limiter is functional, visit the
[`/test_env`][hte] page of the server to view the current load average.
If the value for the load average is greater than zero, that means that
it is possible to activate the load-average limiter on that repository.
If the load average shows exactly "0.0", then that means that Fossil is
unable to find the load average. This can either be because it is in a
`chroot(2)` jail without `/proc` access, or because it is running on a
system that does not support `getloadavg()` and so the load-average
limiter will not function.


[503]: http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.4
[hte]: /help?cmd=/test_env
[gla]: https://linux.die.net/man/3/getloadavg
[lin]: http://www.linode.com
[sh]:  ./selfhost.wiki
Added www/makefile.wiki.







































































































































































































































































































































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<title>The Fossil Build Process</title>

<h1>1.0 Introduction</h1>

The build process for Fossil is tricky in that the source code
needs to be processed by three different preprocessor programs
before it is compiled.  Most users will download a
[https://fossil-scm.org/home/uv/download.html | precompiled binary]
so this is of no consequence to them, and even those who
want to compile the code themselves can use one of the
[./build.wiki | existing makefiles].
So most people do not need to be concerned with the
build complexities of Fossil.  But hard-core developers who desire
a deep understanding of how Fossil is put together can benefit
from reviewing this article.

<h1 id="srctour">2.0 Source Code Tour</h1>

The source code for Fossil is found in the
[/dir?ci=trunk&name=src | src/] subdirectory of the
source tree.  The src/ subdirectory contains all code, including
the code for the separate preprocessor programs.

Each preprocessor program is a separate C program implemented in
a single file of C source code.  The three preprocessor programs
are:

  1.  [/file/tools/mkindex.c | mkindex.c]
  2.  [/file/tools/translate.c | translate.c]
  3.  [/file/tools/makeheaders.c | makeheaders.c]

Fossil uses [http://www.sqlite.org/ | SQLite] for on-disk
storage.  The SQLite implementation is contained in three source
code files that do not participate in the preprocessing steps.
These three files that implement SQLite are:

  4.  sqlite3.c
  5.  sqlite3.h
  6.  shell.c

All three SQLite source files are byte-for-byte copies of files by
the same name in the
standard [http://www.sqlite.org/amalgamation.html | amalgamation].
The sqlite3.c file implements the database engine.  The shell.c file
implements the command-line shell, which is accessed in fossil using
the [/help?cmd=sqlite3 | fossil sql] command.

The shell.c command-line shell uses the [https://github.com/antirez/linenoise |
linenoise] library to implement line editing.  linenoise comprises two
source files which were copied from the upstream repository with only
very minor portability edits:

  7.  linenoise.c
  8.  linenoise.h

The TH1 script engine is implemented using files:

  9.  th.c
  10.  th.h

The preprocessing steps are omitted for all of these imported
files.

The VERSION.h header file is generated from other information sources
using a small program called:

  11.  [/file/tools/mkversion.c | mkversion.c]

The builtin_data.h header file contains the definitions of C-language
byte-array constants that contain various resources such as scripts and
images.  The builtin_data.h header file is generated from the original
resource files using a small program called:

  12   [/file/tools/mkbuiltin.c | mkbuiltin.c]

Examples of built-in resources include the [/file/src/diff.tcl | diff.tcl]
script used to implement the --tk option to [/help?cmd=diff| fossil diff],
the [/file/src/markdown.md | markdown documentation], and the various
CSS scripts, headers, and footers used to implement built-in skins.  New
resources files are added to the "extra_files" variable in
[/file/tools/makemake.tcl | makemake.tcl].

The src/ subdirectory also contains documentation about the
makeheaders preprocessor program:

  13.  [../tools/makeheaders.html | makeheaders.html]

Click on the link to read this documentation.  In addition there is
a [http://www.tcl-lang.org/ | Tcl] script used to build the various makefiles:

  14.  makemake.tcl

Running this Tcl script will automatically regenerate all makefiles.
In order to add a new source file to the Fossil implementation, simply
edit makemake.tcl to add the new filename, then rerun the script, and
all of the makefiles for all targets will be rebuilt.

There is an optional code verification step implemented using

  15.  [/file/tools/codecheck1.c | codecheck1.c]

This file implements a small utility program ("codecheck1")
that scans other Fossil source files looking for errors in printf-style
format strings.
The codecheck1 utility detects missing or surplus arguments on
printf-like functions and dangerous uses of "%s" that might
permit SQL injection or cross-site scripting attacks.  This code
check step is run automatically on each build of Fossil, and can
also be run separately by typing "make codecheck".  Note that the
built-in printf format checking of GCC does not function for Fossil
since Fossil implements its own printf (in the
[/file/src/printf.c | printf.c] source file) that includes special
features and formatting letters that are useful to Fossil.  The
codecheck1 utility can be seen as an enhanced application-specific
replacement for the GCC printf format checker.

Finally, there is one of the makefiles generated by makemake.tcl:

  16.  main.mk

The main.mk makefile is invoked from the Makefile in the top-level
directory.  The main.mk is generated by makemake.tcl and should not
be hand edited.  Other makefiles generated by makemake.tcl are in
other subdirectories (currently all in the win/ subdirectory).

All the other files in the src/ subdirectory (79 files at the time of
this writing) are C source code files that are subject to the
preprocessing steps described below.  In the sequel, we will call these
other files "src.c" in order to have a convenient name.   The reader
should understand that whenever "src.c" or "src.h" is used in the text
that follows, we really mean all (79) other source files other than
the exceptions described above.

<h1>3.0 Automatically generated files</h1>

The "VERSION.h" header file contains some C preprocessor macros that
identify the version of Fossil that is to be built.  The VERSION.h file is
generated automatically from information extracted from the "manifest",
"manifest.uuid", and "VERSION" source files in the root directory of the
source tree.
(The "manifest" and "manifest.uuid" files are automatically generated and
updated by Fossil itself.  See the [/help/setting | fossil set manifest]
command for additional information.)

The VERSION.h header file is generated by
a C program: tools/mkversion.c.
To run the VERSION.h generator, first compile the tools/mkversion.c
 source file into a command-line program (named "mkversion.exe")
then run:

<pre>
mkversion.exe manifest.uuid manifest VERSION &gt;VERSION.h
</pre>

The pathnames in the above command might need to be adjusted to get the
directories right.  The point is that the manifest.uuid, manifest, and
VERSION files
in the root of the source tree are the three arguments and
the generated VERSION.h file appears on standard output.

The builtin_data.h header file is generated by a C program: tools/mkbuiltin.c.
The builtin_data.h file contains C-language byte-array definitions for
the content of resource files used by Fossil.  To generate the
builtin_data.h file, first compile the mkbuiltin.c program, then run:

<pre>
mkbuiltin.exe diff.tcl <i>OtherFiles...</i> &gt;builtin_data.h
</pre>

At the time of this writing, the "diff.tcl" script (a Tcl/Tk script used
to generate implement --tk option on the diff command) is the only resource
file processed using mkbuiltin.exe.  However, new resources will likely be
added using this facility in future versions of Fossil.

<h1 id="preprocessing">4.0 Preprocessing</h1>

There are three preprocessors for the Fossil sources.  The mkindex
and translate preprocessors can be run in any order.  The makeheaders
preprocessor must be run after translate.

<h2>4.1 The mkindex preprocessor</h2>

The mkindex program scans the "src.c" source files looking for special
comments that identify routines that implement various Fossil commands,
web interface methods, and help text comments.  The mkindex program
generates some C code that Fossil uses in order to dispatch commands and
HTTP requests and to show on-line help.  Compile the mkindex program
from the mkindex.c source file.  Then run:

<pre>
./mkindex src.c >page_index.h
</pre>

Note that "src.c" in the above is a stand-in for the (79) regular source
files of Fossil - all source files except for the exceptions described in
section 2.0 above.

The output of the mkindex program is a header file that is #include-ed by
the main.c source file during the final compilation step.

<h2>4.2 The translate preprocessor</h2>

The translate preprocessor looks for lines of source code that begin
with "@" and converts those lines into string constants or (depending on
context) into special "printf" operations for generating the output of
an HTTP request.  The translate preprocessor is a simple C program whose
sources are in the translate.c source file.  The translate preprocess
is run on each of the other ordinary source files separately, like this:

<pre>
./translate src.c >src_.c
</pre>

In this case, the "src.c" file represents any single source file from the
set of ordinary source files as described in section 2.0 above.  Note that
each source file is translated separately.  By convention, the names of
the translated source files are the names of the input sources with a
single "_" character at the end.  But a new makefile can use any naming
convention it wants - the "_" is not critical to the build process.

After being translated, the output files (the "src_.c" files) should be
used for all subsequent preprocessing and compilation steps.

<h2>4.3 The makeheaders preprocessor</h2>

For each C source module "src.c", there is an automatically generated
header module "src.h" that contains all of the datatype and procedure
declarations needed by the source module.  These header files are generated
automatically by the makeheaders program.  The sources to makeheaders
are contained in a single file "makeheaders.c".  Additional documentation
on makeheaders can be found in [../tools/makeheaders.html | tools/makeheaders.html].

The makeheaders program is run once.  It scans all inputs source files and
generates header files for each one.  Note that the sqlite3.c and shell.c
source files are not scanned by makeheaders.  Makeheaders only runs over
"ordinary" source files, not the exceptional source files.  However,
makeheaders also uses some extra header files as input.  The general format
is like this:

<pre>
makeheaders src_.c:src.h sqlite3.h th.h VERSION.h
</pre>

In the example above the "src_.c" and "src.h" names represent all of the
(79) ordinary C source files, each as a separate argument.

<h1>5.0 Compilation</h1>

After all generated files have been created and all ordinary source files
have been preprocessed, the generated and preprocessed files can be
combined into a single executable using a C compiler.  This can be done
all at once, or each preprocessed source file can be compiled into a
separate object code file and the resulting object code files linked
together in a final step.

Some files require special C-preprocessor macro definitions.
When compiling sqlite.c, the following macros are recommended:

  *  -DSQLITE_OMIT_LOAD_EXTENSION=1
  *  -DSQLITE_ENABLE_DBSTAT_VTAB=1
  *  -DSQLITE_ENABLE_FTS4=1
  *  -DSQLITE_ENABLE_LOCKING_STYLE=0
  *  -DSQLITE_LIKE_DOESNT_MATCH_BLOBS=1
  *  -DSQLITE_THREADSAFE=0
  *  -DSQLITE_DEFAULT_FILE_FORMAT=4
  *  -DSQLITE_ENABLE_EXPLAIN_COMMENTS=1

The first three symbol definitions above are required; the others are merely
recommended.  Extension loading is omitted as a security measure. The dbstat
virtual table is needed for the [/help?cmd=/repo-tabsize|/repo-tabsize] page.
FTS4 is needed for the search feature.  Fossil is single-threaded so mutexing
is disabled in SQLite as a performance enhancement.  The
SQLITE_ENABLE_EXPLAIN_COMMENTS option makes the output of "EXPLAIN" queries
in the  "[/help?cmd=sqlite3|fossil sql]" command much more readable.

When compiling the shell.c source file, these macros are required:

  *  -Dmain=sqlite3_main
  *  -DSQLITE_OMIT_LOAD_EXTENSION=1

The "main()" routine in the shell must be changed into sqlite3_main()
to prevent it from colliding with the real main() in Fossil, and to give
Fossil an entry point to jump to when the
[/help/sqlite3 | fossil sql] command is invoked.

All the other source code files can be compiled without any special
options.

<h1>6.0 Linkage</h1>

Fossil needs to be linked against [http://www.zlib.net | zlib].  If
the HTTPS option is enabled, then it will also need to link against
the appropriate SSL implementation.  And, of course, Fossil needs to
link against the standard C library.  No other libraries or external
dependences are used.

<h1>7.0 Debugging</h1>

Debug mode is controlled via a FOSSIL_DEBUG preprocessor macro. This can be
set explicitly with the make command for the target platform.

However, in practice it is instead recommended to add a respective configure
option for the target platform and then perform a clean build. This way the
Debug flags are consistently applied across the whole build process. For
example, use these Debug flags in addition to other flags passed to the
configure scripts:

On Linux, *NIX and similar platforms:
<pre>
./configure --fossil-debug
</pre>

On Windows:
<pre>
win\buildmsvc.bat FOSSIL_DEBUG=1
</pre>

The resulting fossil binary can then be loaded into a platform-specific
debugger. Source files displayed in the debugger correspond to the ones
generated from the translation stage of the build process, as that is what
was actually compiled into the respective object files that make up the
fossil binary.

<h1>8.0 See Also</h1>

  *  [./tech_overview.wiki | A Technical Overview Of Fossil]
  *  [./adding_code.wiki | How To Add Features To Fossil]
Added www/mdtest/test1.md.



























































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# Markdown Link-test

This document exists solely as a test for some of the hyperlinking
capabilities of Markdown as implemented by Fossil.

## Relative-Path Links

  *   The index: [](../index.wiki)

  *   Load management: [](../loadmgmt.md)

  *   Site-map:  [](../../../../sitemap)

  *   Windows CGI: [](../server/windows/cgi.md)

## The Magic $ROOT Path Prefix

In text of the form `href="$ROOT/..."` in the HTML that markdown
generates, the $ROOT is replaced by the complete URI for the root 
of the document tree.
Note that the $ROOT translation only occurs within the `<a href="...">`
element, not within the text of the hyperlink.  So you should see the
$ROOT text on this page, but if you mouse-over the hyperlink the $ROOT
value should have been expanded to the actual document root.

  *   Timeline: []($ROOT/timeline)

  *   Site-map:  []($ROOT/sitemap)

The $ROOT prefix on markdown links is superfluous.  The same link
works without the $ROOT prefix.  (Though: the $ROOT prefix is required
for HTML documents.)

  *   Timeline:  [](/timeline)

  *   Help: [](/help?cmd=help)

  *   Site-map:  [](/sitemap)

## The Magic $CURRENT Document Version Translation

In URI text of the form `.../doc/$CURRENT/...` the
$CURRENT value is converted to the version number of the document
currently being displayed.  This conversion happens after translation
into HTML and only occurs on href='...' attributes so it does not occur
for plain text.

  *   Document index:  [](/doc/$CURRENT/www/index.wiki)

Both the $ROOT and the $CURRENT conversions can occur on the same link.

  *   Document index:  []($ROOT/doc/$CURRENT/www/index.wiki)

The translations must be contained within HTML markup in order to work.
They do not work for ordinary text that appears to be an href= attribute.

  *   `x href='$ROOT/timeline'`
  *   `x action="$ROOT/whatever"`
  *   `x href="https://some-other-site.com/doc/$CURRENT/tail"`
Added www/mirrorlimitations.md.





























































































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# Limitations On Git Mirrors

The "<tt>[fossil git export](/help?cmd=git)</tt>" command can be used to
mirror a Fossil repository to Git.
([Setup instructions](./mirrortogithub.md) and an
[example](https://github.com/drhsqlite/fossil-mirror).)
But the export to Git is not perfect. Some information is lost during
export due to limitations in Git.  This page describes what content of
Fossil is not included in an export to Git.

## (1) Wiki, Tickets, Technotes, Forum

Git only supports version control. The additional features of Fossil such
as Wiki, Tickets, Technotes, and the Forum are not supported in Git,
so those features are not included in an export.

Third-party Git based tooling may add some of these features (e.g.
GitHub, GitLab) but because their data are not stored in the Git
repository, there is no single destination for Fossil to convert its
equivalent data *to*. For instance, Fossil tickets do not become GitHub
issues, because that is a proprietary feature of GitHub separate from
Git proper, stored outside the repository on the GitHub servers.

You can also see the problem in its inverse case: you do not get a copy
of your GitHub issues when cloning the Git repository. You *do* get the
Fossil tickets, wiki, forum posts, etc. when cloning a remote Fossil
repo.

## (2) Cherrypick Merges

The Git client supports cherrypick merges but does not record the
cherrypick parent(s).

Fossil tracks cherrypick merges in its repository and displays
cherrypicks in its timeline. (As an example, the dashed lines
[here](/timeline?c=0a9f12ce6655b7a5) are cherrypicks.) Because Git does
not have a way to represent this same information in its repository, the
history of Fossil cherrypicks cannot be exported to Git, only their
direct effects on the managed file data.

## (3) Named Branches

Git has only limited support for named branches.  Git identifies the head
check-in of each branch.  Depending on the check-in graph topology, this
is sufficient to infer the branch for many historical check-ins as well.
However, complex histories with lots of cross-merging
can lead to ambiguities.  Fossil keeps
track of historical branch names unambiguously, 
but the extra details about branch names that Fossil keeps
at hand cannot be exported to Git.

## (4) Non-unique Tags

Git requires tags to be unique: each tag must refer to exactly one
check-in.  Fossil does not have this restriction, and so it is common
in Fossil to tag multiple check-ins with the same name.  For example,
it is common in Fossil to tag each check-in creating a release both
with a unique version tag *and* a common tag like "release"
so that all historical releases can be found at once.
([Example](/timeline?t=release).)

Git does not allow this.  The "release" tag must refer to just one
check-in.  The work-around is that the non-unique tag in the Git export is 
made to refer to only the most recent check-in with that tag.

This is why the ["release" tag view][ghrtv] in the GitHub mirror of this
repository shows only the latest release version; contrast the prior
example. Both URLs are asking the repository the same question, but
because of Git's relatively impoverished data model, it cannot give the
same answer that Fossil does.

[ghrtv]: https://github.com/drhsqlite/fossil-mirror/tree/release

## (5) Amendments To Check-ins

Check-ins are immutable in both Fossil and Git.
However, Fossil has a mechanism by which tags can be added to
its repository to provide after-the-fact corrections to prior check-ins.

For example, tags can be added to check-ins that correct typos in the
check-in comment.  The original check-in is immutable and so the
original comment is preserved in addition to the correction. But
software that displays the check-ins knows to look for the comment-change
tag and if present displays the corrected comment rather than the original.
([Example](/info/8ed91bbe44d0d383) changing the typo "os" into "so".)

Git has no mechanism for providing corrections or clarifications to
historical check-ins.

When exporting from Fossil to Git, the latest corrections to a Fossil check-in
are used to generate the corresponding Git check-in.  But once the Git
check-in has been created, any subsequent corrections are omitted as there
is no way to transfer them to Git.
Added www/mirrortogithub.md.






































































































































































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# How To Mirror A Fossil Repository On GitHub

Beginning with Fossil version 2.9, you can mirror a Fossil-based
project on GitHub (with [limitations](./mirrorlimitations.md))
by following these steps:

1.  Create an account on GitHub if you do not have one already.  Log
    into that account.

2.  Create a new project.  GitHub will ask you if you want to prepopulate
    your project with various things like a README file.  Answer "no" to
    everything.  You want a completely blank project.  GitHub will then
    supply you with a URL for your project that will look something
    like this:

          https://github.com/username/project.git

3.  Back on your workstation, move to a checkout for your Fossil
    project and type:

    <blockquote>
    <pre>
    $ fossil git export /path/to/git/repo --autopush &bsol;
      https://<font color="orange">username</font>:<font color="red">password</font>@github.com/username/project.git
    </pre>
    </blockquote>

    In place of the <code>/path/to...</code> argument above, put in
    some directory name that is <i>outside</i> of your Fossil checkout. If
    you keep multiple Fossil checkouts in a directory of their own,
    consider using <code>../git-mirror</code> to place the Git export
    mirror alongside them, for example.  Fossil will create this
    directory if necessary.  This directory will become a Git
    repository that holds a translation of your Fossil repository.

    The <code>--autopush</code> option tells Fossil that you want to
    push the Git translation up to GitHub every time it is updated.
    
    The URL parameter is the same as the one GitHub gave you, but with
    your GitHub <font color="orange">username</font> and <font
    color="red">password</font> added.
    
    If your GitHub account uses two-factor authentication (2FA), you
    will have to <a href="https://github.com/settings/tokens">generate
    a personal access token</a> and use that in place of your actual
    password in the URL. This token should have “repo†scope enabled,
    only.

    You can also run the command above outside of any open checkout of
    your project by supplying the “<code>-R&nbsp;repository</code>â€
    option.

4.  Get some coffee.  Depending on the size of your project, the
    initial "<code>fossil git export</code>" command in the previous
    step might run for several minutes.

5.  And you are done!  Assuming everything worked, your project is now
    mirrored on GitHub.

6.  Whenever you update your project, simply run this command to update
    the mirror:

          $ fossil git export

    Unlike with the first time you ran that command, you don’t need
    the remaining arguments, because Fossil remembers those things.
    Subsequent mirror updates should usually happen in a fraction of
    a second.

7.  To see the status of your mirror, run:

          $ fossil git status

## Notes:

  *  Unless you specify --force, the mirroring only happens if the Fossil
     repo has changed, with Fossil reporting "no changes", because Fossil 
     does not care about the success or failure of the mirror run. If a mirror
     run failed (for example, due to an incorrect password, or a transient
     error at github.com), Fossil will not retry until there has been a repo
     change or --force is supplied.

  *  The mirroring is one-way.  If you check in changes on GitHub, those
     changes will not be reabsorbed by Fossil.  There are technical problems
     that make a two-way mirror all but impossible. (This is not to be 
     confused with the ability to import a Fossil mirror from Github back
     into a Fossil repository. That works, but it is not a mirror.)

     This also means that you cannot accept pull requests on GitHub.

  *  The "`fossil git export`" command creates subprocesses that run "`git`"
     commands, so you must have Git installed on your machine for any
     of this to work.

  *  The Git repository will have an extra unmanaged top-level directory named
     "`.mirror_state`" that contains one or more files.  Those files are
     used to store the intermediate state of the translation so that
     subsequent invocations of "`fossil git export`" will know where you
     left off the last time and what new content needs to be moved over into
     Git.  Be careful not to mess with the `.mirror_state` directory or
     any of its contents.  Do not put those files under Git management.  Do
     not edit or delete them.

  *  The name of the "trunk" branch is automatically translated into "master"
     in the Git mirror unless you give the `--mainbranch` option.

  *  Only check-ins and simple tags are translated to Git.  Git does not
     support wiki or tickets or unversioned content or any of the other
     features of Fossil that make it so convenient to use, so those other
     elements cannot be mirrored in Git.

  *  In Git, all tags must be unique.  If your Fossil repository has the
     same tag on two or more check-ins, the tag will only be preserved on
     the chronologically newest check-in.

  *  There is a 
     [long list of restrictions](https://git-scm.com/docs/git-check-ref-format)
     on tag and branch names in Git.  If any of your Fossil tag or branch names
     violate these rules, then the names are translated prior to being exported
     to Git.  The translation usually involves converting the offending characters
     into underscores.
  
  *  If your Fossil user contact info is not set and this repository was not
     initially [imported from Git](./inout.wiki), `fossil git export` will
     construct a generic `user@noemail.net` for the Git *committer* and *author*
     email fields of each commit. However, Fossil will first attempt to parse an
     email address from your user contact info, which can be set through a
     Fossil [UI][ui] browser window or with the [`user contact`][usercmd]
     subcommand on the command line. Alternatively, if this repository was
     previously imported from Git using the [`--attribute`][attr] option, the
     [`fx_git`][fxgit] table will be queried for correspondent email addresses.
     Only if neither of these methods produce a user specified email will the
     abovementioned generic address be used.

[attr]: /help?cmd=import
[fxgit]: ./inout.wiki#fx_git
[ui]: /help?cmd=ui
[usercmd]: /help?cmd=user


## <a id='ex1'></a>Example GitHub Mirrors

As of this writing (2019-03-16) Fossil’s own repository is mirrored
on GitHub at:

> <https://github.com/drhsqlite/fossil-mirror>

In addition, an official Git mirror of SQLite is available:

> <https://github.com/sqlite/sqlite>

The Fossil source repositories for these mirrors are at
<https://www2.fossil-scm.org/fossil> and <https://www2.sqlite.org/src>,
respectively.  Both repositories are hosted on the same VM at
[Linode](https://www.linode.com).  On that machine, there is a 
[cron job](https://linux.die.net/man/8/cron)
that runs at 17 minutes after the hour, every hour that does:

    /usr/bin/fossil sync -u -R /home/www/fossil/fossil.fossil
    /usr/bin/fossil sync -R /home/www/fossil/sqlite.fossil
    /usr/bin/fossil git export -R /home/www/fossil/fossil.fossil
    /usr/bin/fossil git export -R /home/www/fossil/sqlite.fossil

The initial two "sync" commands pull in changes from the primary
Fossil repositories for Fossil and SQLite.  The last two lines
export the changes to Git and push the results up to GitHub.
Deleted www/mkdownload.tcl.
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#!/usr/bin/tclsh
#
# Run this script to build the "download" page on standard output.
#
#
puts \
{<html>
<head>
<title>Fossil: Downloads</title>
<link rel="stylesheet" href="/fossil/style.css" type="text/css"
      media="screen">
</head>
<body>
<div class="header">
  <div class="logo">
    <img src="/fossil/doc/tip/www/fossil_logo_small.gif" alt="logo">
  </div>
  <div class="title">Fossil Downloads</div>
</div>
<div class="mainmenu"><a href='/fossil/doc/tip/www/index.wiki'>Home</a><a href='/fossil/leaves'>Leaves</a><a href='/fossil/timeline'>Timeline</a><a href='/fossil/brlist'>Branches</a><a href='/fossil/taglist'>Tags</a><a href='/fossil/reportlist'>Tickets</a><a href='/fossil/wiki'>Wiki</a><a href='/fossil/login'>Login</a></div>
<div class="content">
<p>

<p>
Click on links below to download prebuilt binaries and source tarballs for 
recent versions of <a href="/fossil">Fossil</a>.
The historical source code is also available in the
<a href="/fossil/doc/tip/www/selfhost.wiki">self-hosting
Fossil repositories</a>.
</p>

<p>
<u>Important Note:</u>
After upgrading to a newer version of fossil, it is always a good idea
to run:
<blockquote><pre>
<b><big><tt>fossil all rebuild</tt></big></b>
</pre></blockquote>
Running "rebuild" this way is not always necessary, but it never hurts.
</p>

<table cellpadding="10">
}

# Find all all unique timestamps.
#
foreach file [glob -nocomplain download/fossil-*.zip] {
  if {[regexp {(\d+).zip$} $file all datetime]
       && [string length $datetime]==14} {
    set adate($datetime) 1
  }
}

# Do all dates from newest to oldest
#
foreach datetime [lsort -decr [array names adate]] {
  set dt [string range $datetime 0 3]-[string range $datetime 4 5]-
  append dt "[string range $datetime 6 7] "
  append dt "[string range $datetime 8 9]:[string range $datetime 10 11]:"
  append dt "[string range $datetime 12 13]"
  set link [string map {{ } +} $dt]
  set hr http://www.fossil-scm.org/fossil/timeline?c=$link&y=ci
  puts "<tr><td colspan=5 align=center><hr>"
  puts "<b>Fossil snapshot as of <a href=\"$hr\">$dt</a><td width=30></b>"
  puts "</td></tr>"
  
  foreach {prefix suffix img desc} {
    fossil-linux-x86 zip linux.gif {Linux x86}
    fossil-linux-amd64 zip linux64.gif {Linux x86_64}
    fossil-macosx-x86 zip mac.gif {Mac 10.5 x86}
    fossil-w32 zip win32.gif {Windows}
    fossil-src tar.gz src.gif {Source Tarball}
  } {
    set filename download/$prefix-$datetime.$suffix
    if {[file exists $filename]} {
      set size [file size $filename]
      set units bytes
      if {$size>1024*1024} {
        set size [format %.2f [expr {$size/(1024.0*1024.0)}]]
        set units MiB
      } elseif {$size>1024} {
        set size [format %.2f [expr {$size/(1024.0)}]]
        set units KiB
      }
      puts "<td align=center valign=bottom><a href=\"$filename\">"
      puts "<img src=\"build-icons/$img\" border=0><br>$desc</a><br>"
      puts "$size $units</td>"
    } else {
      puts "<td>&nbsp;</td>"
    }
  }
  puts "</tr>"
}
puts "<tr><td colspan=5><hr></td></tr>"

puts {</table>
</body>
</html>
}
Added www/mkindex.tcl.


























































































































































































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#!/usr/bin/env tclsh
#
# Run this TCL script to generate a WIKI page that contains a
# permuted index of the various documentation files.
#
#    tclsh mkindex.tcl
#
# 2021-02-26:  The permuted index feature has been removed because
# moderns don't understand such things, and seeing so many entries
# confuses them.
#

set doclist {
  aboutcgi.wiki {How CGI Works In Fossil}
  aboutdownload.wiki {How The Download Page Works}
  adding_code.wiki {Adding New Features To Fossil}
  adding_code.wiki {Hacking Fossil}
  alerts.md {Email Alerts And Notifications}
  antibot.wiki {Defense against Spiders and Robots}
  backoffice.md {The "Backoffice" mechanism of Fossil}
  backup.md {Backing Up a Remote Fossil Repository}
  blame.wiki {The Annotate/Blame Algorithm Of Fossil}
  blockchain.md {Is Fossil A Blockchain?}
  branching.wiki {Branching, Forking, Merging, and Tagging}
  bugtheory.wiki {Bug Tracking In Fossil}
  build.wiki {Compiling and Installing Fossil}
  cap-theorem.md {Fossil and the CAP Theorem}
  caps/ {Administering User Capabilities (a.k.a. Permissions)}
  caps/admin-v-setup.md {Differences Between Setup and Admin Users}
  caps/ref.html {User Capability Reference}
  cgi.wiki {CGI Script Configuration Options}
  changes.wiki {Fossil Changelog}
  chat.md {Fossil Chat}
  checkin_names.wiki {Check-in And Version Names}
  checkin.wiki {Check-in Checklist}
  childprojects.wiki {Child Projects}
  chroot.md {Server Chroot Jail}
  ckout-workflows.md {Check-Out Workflows}
  co-vs-up.md {Checkout vs Update}
  colordiff.md {Colorized Diffs}
  copyright-release.html {Contributor License Agreement}
  concepts.wiki {Fossil Core Concepts}
  contact.md {Developer Contact Information}
  containers.md {OCI Containers}
  contribute.wiki {Contributing Code or Documentation To The Fossil Project}
  css-tricks.md {Fossil CSS Tips and Tricks}
  customgraph.md {Theming: Customizing the Timeline Graph}
  customskin.md {Theming: Customizing The Appearance of Web Pages}
  customskin.md {Custom Skins}
  custom_ticket.wiki {Customizing The Ticket System}
  defcsp.md {The Default Content Security Policy}
  delta-manifests.md {Delta Manifests}
  delta_encoder_algorithm.wiki {Fossil Delta Encoding Algorithm}
  delta_format.wiki {Fossil Delta Format}
  embeddeddoc.wiki {Embedded Project Documentation}
  encryptedrepos.wiki {How To Use Encrypted Repositories}
  env-opts.md {Environment Variables and Global Options}
  event.wiki {Events}
  faq.wiki {Frequently Asked Questions}
  fileedit-page.md {The fileedit Page}
  fileformat.wiki {Fossil File Format}
  fiveminutes.wiki {Up and Running in 5 Minutes as a Single User}
  forum.wiki {Fossil Forums}
  foss-cklist.wiki {Checklist For Successful Open-Source Projects}
  fossil-from-msvc.wiki {Integrating Fossil in the Microsoft Express 2010 IDE}
  fossil-is-not-relational.md {Introduction to the (Non-relational) Fossil Data Model}
  fossil_prompt.wiki {Fossilized Bash Prompt}
  fossil-v-git.wiki {Fossil Versus Git}
  gitusers.md {Git to Fossil Translation Guide}
  globs.md {File Name Glob Patterns}
  glossary.md {Glossary}
  grep.md {Fossil grep vs POSIX grep}
  hacker-howto.wiki {Hacker How-To}
  hacker-howto.wiki {Fossil Developers Guide}
  hashes.md {Hashes: Fossil Artifact Identification}
  hashpolicy.wiki {Hash Policy: Choosing Between SHA1 and SHA3-256}
  /help {Lists of Commands and Webpages}
  hints.wiki {Fossil Tips And Usage Hints}
  history.md {The Purpose And History Of Fossil}
  index.wiki {Home Page}
  inout.wiki {Import And Export To And From Git}
  interwiki.md {Interwiki Links}
  image-format-vs-repo-size.md {Image Format vs Fossil Repo Size}
  javascript.md {Use of JavaScript in Fossil}
  json-api/index.md {JSON API}
  loadmgmt.md {Managing Server Load}
  makefile.wiki {The Fossil Build Process}
  mirrorlimitations.md {Limitations On Git Mirrors}
  mirrortogithub.md {How To Mirror A Fossil Repository On GitHub}
  /md_rules {Markdown Formatting Rules}
  newrepo.wiki {How To Create A New Fossil Repository}
  patchcmd.md {The "fossil patch" Command}
  password.wiki {Password Management And Authentication}
  pikchr.md {The Pikchr Diagram Language}
  pop.wiki {Principles Of Operation}
  private.wiki {Creating, Syncing, and Deleting Private Branches}
  qandc.wiki {Questions And Criticisms}
  quickstart.wiki {Fossil Quick Start Guide}
  quotes.wiki
      {Quotes: What People Are Saying About Fossil, Git, and DVCSes in General}
  ../test/release-checklist.wiki {Pre-Release Testing Checklist}
  rebaseharm.md {Rebase Considered Harmful}
  reviews.wiki {Reviews}
  selfcheck.wiki {Fossil Repository Integrity Self Checks}
  selfhost.wiki {Fossil Self Hosting Repositories}
  server/ {How To Configure A Fossil Server}
  serverext.wiki {CGI Server Extensions}
  serverext.wiki {Adding Extensions To A Fossil Server Using CGI Scripts}
  settings.wiki {Fossil Settings}
  /sitemap {Site Map}
  shunning.wiki {Shunning: Deleting Content From Fossil}
  stats.wiki {Performance Statistics}
  style.wiki {Source Code Style Guidelines}
  ssl.wiki {Using SSL with Fossil}
  ssl-server.md {SSL/TLS Server Mode}
  sync.wiki {The Fossil Sync Protocol}
  tech_overview.wiki {A Technical Overview Of The Design And Implementation
                      Of Fossil}
  tech_overview.wiki {SQLite Databases Used By Fossil}
  th1.md {The TH1 Scripting Language}
  theory1.wiki {Thoughts On The Design Of The Fossil DVCS}
  tickets.wiki {The Fossil Ticket System}
  unvers.wiki {Unversioned Files}
  webpage-ex.md {Webpage Examples}
  webui.wiki {The Fossil Web Interface}
  whyallinone.md {Why Bundle Forum, Wiki, and other Web Software With Your DVCS?}
  whyusefossil.wiki {Why You Should Use Fossil}
  whyusefossil.wiki {Benefits Of Version Control}
  wikitheory.wiki {Wiki In Fossil}
  /wiki_rules {Wiki Formatting Rules}
}

set permindex {}
set stopwords {
   a about against and are as by for fossil from in of on or should the to use
   used with
}
foreach {file title} $doclist {
  set n [llength $title]
  regsub -all {\s+} $title { } title
  lappend permindex [list $title $file 1]

# Disable the permutations.
#  for {set i 0} {$i<$n-1} {incr i} {
#    set prefix [lrange $title 0 $i]
#    set suffix [lrange $title [expr {$i+1}] end]
#    set firstword [string tolower [lindex $suffix 0]]
#    if {[lsearch $stopwords $firstword]<0} {
#      lappend permindex [list "$suffix &mdash; $prefix" $file 0]
#    }
#  }
}
set permindex [lsort -dict -index 0 $permindex]
set out [open permutedindex.html w]
fconfigure $out -encoding utf-8 -translation lf
puts $out \
"<div class='fossil-doc' data-title='Index Of Fossil Documentation'>"
puts $out {
<form action='$ROOT/docsrch' method='GET' style="text-align:center">
<input type="text" name="s" size="40" autofocus>
<input type="submit" value="Search Docs">
</form>
<h2>Primary Documents:</h2>
<ul>
<li> <a href='quickstart.wiki'>Quick-start Guide</a>
<li> <a href='$ROOT/help'>Built-in help for commands and webpages</a>
<li> <a href='history.md'>Purpose and History of Fossil</a>
<li> <a href='build.wiki'>Compiling and installing Fossil</a>
<li> <a href='../COPYRIGHT-BSD2.txt'>License</a>
<li> <a href='userlinks.wiki'>Miscellaneous Docs for Fossil Users</a>
<li> <a href='hacker-howto.wiki'>Fossil Developer's Guide</a>
<li><a href='$ROOT/wiki?name=Release Build How-To'>Release Build How-To</a>,
a.k.a.  how deliverables are built</li>
</li>
<li> <a href='$ROOT/wiki?name=To+Do+List'>To Do List (Wiki)</a>
<li> <a href='https://fossil-scm.org/fossil-book/'>Fossil book</a>
</ul>
<h2 id="pindex">Other Documents:</h2>
<ul>}
foreach entry $permindex {
  foreach {title file bold} $entry break
#  if {$bold} {set title <b>$title</b>}
  if {[string match /* $file]} {set file ../../..$file}
  puts $out "<li><a href=\"$file\">$title</a></li>"
}
puts $out "</ul></div>"
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<h1>HOWTO: creating a new repository</h1>
<title>How To Create A New Fossil Repository</title>

<p> The [/doc/tip/www/quickstart.wiki|quickstart guide] explains how
The [/doc/tip/www/quickstart.wiki|quickstart guide] explains how
to get up and running with fossil. But once you're running, what can
you do with it? This document will walk you through the process of
creating a fossil repository, populating it with files, and then
sharing it over the web.</p>
sharing it over the web.

The first thing we need to do is create a fossil repository file:

<verbatim>
stephan@ludo:~/fossil$ fossil new demo.fossil
$ fossil new demo.fossil
project-id: 9d8ccff5671796ee04e60af6932aa7788f0a990a
server-id:  145fe7d71e3b513ac37ac283979d73e12ca04bfe
admin-user: stephan (initial password is ******)
</verbatim>

The numbers it spits out are unimportant (they are version
numbers).

Now we have an empty repository file named <tt>demo.fossil</tt>.
There is nothing magical about the extension <tt>.fossil</tt> - it's
just a convention. You may name your files anything you like.

The first thing we normally want to do is to run fossil as a local server so
that you can configure the access rights to the repo:

<verbatim>
stephan@ludo:~/fossil$ fossil ui demo.fossil
$ fossil ui demo.fossil
</verbatim>

The <tt>ui</tt> command starts up a server (with an optional <tt>-port
NUMBER</tt> argument) and launches a web browser pointing at the
fossil server. From there it takes just a few moments to configure the
repo. Most importantly, go to the Admin menu, then the Users link, and
set your account name and password, and grant your account all access
priviledges. (I also like to grant Clone access to the anonymous user,
privileges. (I also like to grant Clone access to the anonymous user,
but that's personal preference.)

Once you are done, kill the fossil server (with Ctrl-C or equivalent)
and close the browser window.

<blockquote>
Tip: it is not strictly required to configure a repository
<div class="sidebar">
It is not strictly required to configure a repository
this way, but if you are going to share a repo over the net then it
is highly recommended. If you are only going to work with the repo
locally, you can skip the configuration step and do it later if
you decide you want to share your repo.
</blockquote>
</div>

The next thing we need to do is <em>open</em> the repository. To do so
we create a working directory and then <tt>cd</tt> to it:

<verbatim>
stephan@ludo:~/fossil$ mkdir demo
stephan@ludo:~/fossil$ cd demo
stephan@ludo:~/fossil/demo$ fossil open ../demo.fossil
$ mkdir demo
$ cd demo
$ fossil open ../demo.fossil
stephan@ludo:~/fossil/demo$  
</verbatim>

That creates a file called <tt>_FOSSIL_</tt> in the current
directory, and this file contains all kinds of fossil-related
information about your local repository. You can ignore it
information about your local repository. Under Linux, the BSDs or
macOS, this will instead be called <tt>.fslckout</tt>. You can ignore it
for all purposes, but be sure not to accidentally remove it
or otherwise damage it - it belongs to fossil, not you.

The next thing we need to do is add files to our repository.  As it
happens, we have a few C source files laying around, which we'll
happens, we have a few C source files lying around, which we'll
simply copy into our working directory.

<verbatim>
stephan@ludo:~/fossil/demo$ cp ../csnip/*.{c,h} .
stephan@ludo:~/fossil/demo$ ls
clob.c  clob.h  clobz.c  _FOSSIL_  mkdep.c  test-clob.c
$ cp ../csnip/*.{c,h} .
$ ls
clob.c  clob.h  clobz.c  mkdep.c  test-clob.c
tokenize_path.c tokenize_path.h  vappendf.c  vappendf.h
</verbatim>

Fossil doesn't know about those files yet. Telling fossil about
a new file is a two-step process. First we <em>add</em> the file
to the repo, then we <em>commit</em> the file. This is a familiar
to the repository, then we <em>commit</em> the file. This is a familiar
process for anyone who's worked with SCM systems before:

<verbatim>
stephan@ludo:~/fossil/demo$ fossil add *.{c,h}
stephan@ludo:~/fossil/demo$ fossil commit -m "egg"
$ fossil add *.{c,h}
$ fossil commit -m "egg"
New_Version: d1296b4a08b9f8b943bb6c73698e51eed23f8f91
</verbatim>

We now have a working repository! The file <tt>demo.fossil</tt>
is the central storage, and we can share it amongst an arbitrary
number of trees. As a silly example:

<verbatim>
stephan@ludo:~/fossil/demo$ cd ~/fossil
stephan@ludo:~/fossil$ mkdir demo2
stephan@ludo:~/fossil$ cd demo2
stephan@ludo:~/fossil/demo2$ fossil open ../demo.fossil
$ cd ~/fossil
$ mkdir demo2
$ cd demo2
$ fossil open ../demo.fossil
ADD clob.c
ADD clob.h
ADD clobz.c
ADD mkdep.c
ADD test-clob.c
ADD tokenize_path.c
ADD tokenize_path.h
ADD vappendf.c
</verbatim>

You may modify the repository (e.g. add, remove, or commit files) from
both working directories, and doing so might be useful when working on
a branch or experimental code.

Making your repository available over the web is trivial to do. We
assume you have some web space where you can store your fossil file
and run a CGI script. If not, then this option is not for you. If
you do, then here's how...

Copy copy the fossil repository file to your web server (it doesn't
matter where, really).
Copy the fossil repository file to your web server (it doesn't matter
where, really, but it "should" be unreachable by web browser traffic).

In your <tt>cgi-bin</tt> (or equivalent) directory, create a file
which looks like this:

<verbatim>
#!/path/to/fossil
repository: /path/to/my_repo.fossil
</verbatim>

Make that script executable, and you're all ready to go:

<verbatim>
~/www/cgi-bin> chmod +x myrepo.cgi
$ chmod +x ~/www/cgi-bin/myrepo.cgi
</verbatim>

Now simply point your browser to
<tt>http://my.domain/cgi-bin/myrepo.cgi</tt> and you should
<tt>https://my.domain/cgi-bin/myrepo.cgi</tt> and you should
be able to manage the repository from there.

To check out a copy of your remote repository, use the
<em>clone</em> command:

<verbatim>
stephan@ludo:~/fossil$ fossil clone \
  http://MyAccountName:MyAccountPassword@my.domain/cgi-bin/myrepo.cgi
$ fossil clone \
  https://MyAccountName:MyAccountPassword@my.domain/cgi-bin/myrepo.cgi
</verbatim>

Note that you should pass your fossil login name and password (as set
If you do not provide your password in the URL, fossil will
via local server mode) during the clone - that ensures that fossil
won't ask you for it on each commit!
interactively prompt you for it.

A clone is a local copy of a remote repository, and can be opened just
like a local one (as shown above). It is treated identically to your
local repository, with one very important difference.  When you commit
changes to a cloned remote repository, they will be pushed back to the
remote repository. If you have <tt>autosync</tt> on then this sync
happens automatically, otherwise you will need to use the
<em>pull</em> command to get remote changes and the <em>push</em>
command to push your local commits to the remote repository. You must
of course have authorization to commit changes (access is configured
via the Admin/Users page mentioned above).

You may always use the <em>server</em> or <em>ui</em> commands to
browse a cloned repository. You can even edit create or wiki entries,
etc., and they will be pushed to the remote side the next time you
push data to the the remote.
push data to the remote.
Changes to www/password.wiki.
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<title>Fossil Password Management</title>
<h1 align="center">Password Management</h1>

Fossil handles user authentication using passwords.
Passwords are unique to each repository.  Passwords are not part of the
persistent state of a project.  Passwords are not versioned and
are not transmitted from one repository to another during a sync.
Passwords are local configuration information that can (and usually does)
vary from one repository to the next within the same project.

Passwords are stored in the PW field of the USER table.
In older versions of Fossil (prior to 
[/timeline?c=2010-01-10+20:56:30 | 2010-01-11]) the password 
In older versions of Fossil (prior to
[/timeline?c=2010-01-10T20:56:30 | 2010-01-11]) the password
is stored as cleartext.  In newer versions of Fossil, the password
can be either cleartext or an SHA1 hash (written as a 40-character
lower-case hexadecimal number).  If the USER.PW field contains
a 40-character string, that string is assumed to be a SHA1 hash.
If the size of USER.PW is anything other than 40 characters, then
it is understood as a plain-text password.

The SHA1 hash in the USER.PW field is a hash of a string composed of
the project-code, the user login, and the user cleartext password.
Suppose user "alice" with password "asdfg" had an account on the
Fossil self-hosting repository.  Then the value of USER.PW
for alice would be the SHA1 hash of

<blockquote>
<pre>
CE59BB9F186226D80E49D1FA2DB29F935CCA0333/alice/asdfg
</blockquote>
</pre>

That hash value is "f1b699cc9af3eeb98e5de244ca7802ae38e77bae".  Note
that by including the project-code and the login as part of the hash,
a different USER.PW value results even if two or more users on the
repository select the same "asdfg" password or if user alice reuses the
same password on multiple projects.
Note that by including the project-code and the login as part of the
hash, a different USER.PW value results even if two or more users on
the repository select the same "asdfg" password or if user alice
reuses the same password on multiple projects.

Whenever a password is changed using the web interface or using the
"user" command-line method, the new password is stored using the SHA1
encoding.  Thus, cleartext passwords will gradually migrate to become
SHA1 passwords.  All remaining cleartext passwords can be converted to
SHA1 passwords using the following command:

<blockquote><pre>
<pre>
fossil test-hash-passwords <i>REPOSITORY-NAME</i>
</pre></blockquote>
</pre>

Remember that converting from cleartext to SHA1 passwords is an
irreversible operation.

The only way to insert a new cleartext password into the USER table
is to do so manually using SQL commands.  For example:

<blockquote><pre>
<pre>
UPDATE user SET pw='asdfg' WHERE login='alice';
</pre></blockquote>
</pre>

Note that an password that is an empty string or NULL will disable
all login for that user.   Thus, to lock a user out of the system,
one has only to set their password to an empty string, using either
the web interface or direct SQL manipulation of the USER table.
Note also that the password field is
essentially ignored for the special users named "anonymous", "developer",
"reader", and "nobody".  It is not possible to authenticate as users
"developer", "reader", or "nobody" and the authentication protocol
for "anonymous" use one-time captchas not persistent passwords.
for "anonymous" uses one-time captchas not persistent passwords.

<h2>Web Interface Authentication</h2>

When a user logs into Fossil using the web interface, the login name
and password are sent in the clear to the server.  The server then
and password are sent in the clear to the server.  For most modern fossil
server setups with [/help?cmd=redirect-to-https|redirect-to-https] enabled,
this will be protected by the
SSL connection over HTTPS so it cannot be easily viewed. The server then
hashes the password and compares it against the value stored in USER.PW.
If they match, the server sets a cookie on the client to record the
login.  This cookie contains a large amount of high-quality randomness
and is thus impossible to guess.  The value of the cookie and the IP
and is thus intractable to guess.  The value of the cookie and the IP
address of the client is stored in the USER.COOKIE and USER.IPADDR fields
of the USER table on the server.  
of the USER table on the server.

The USER.CEXPIRE field holds an expiration date
for the cookie, encoded as a julian day number.  On all subsequent
HTTP requests, the cookie value is matched against the USER table to 
for the cookie, encoded as a Julian day number.  On all subsequent
HTTP requests, the cookie value is matched against the USER table to
enable access to the repository.

A login cookie will only work if the IP address matches.  This feature
is designed to make it more difficult for an attacker to sniff the cookie
and take over the connection.  A cookie-sniffing attack will only work
if the attacker is able to send and receive from the same IP address as
the original login.  However, we found that doing an exact IP match
caused problems for some users who are behind proxy firewalls where the proxy
might use a different IP address for each query.  To work around this
problem, newer versions of fossil only check the first 16 bits of the
32-bit IP address.  This makes a cookie sniffing attack easier since now
the attacker only has to send and receive from any IP address in a range
of IPs that are similar to the initial login.  But that is seen as an
acceptable compromise in exchange for ease of use.  If higher security
is really needed, then HTTPS can be used instead of HTTP.

Note that in order to log into a Fossil server, it is necessary to
write information into the repository database.  Hence, login is not
possible on a Fossil repository with a read-only database file.

The user password is sent over the wire as cleartext on the initial
login attempt.  The plan moving forward is to compute the SHA1 hash of
the password on the client using javascript and then send only the hash
the password on the client using JavaScript and then send only the hash
over the wire, but that plan has not yet been set in code.

<h2>Sync Protocol Authentication</h2>

A different authentication mechanism is used when one repository wants
to sync (or push or pull or clone) another respository.  When two
respositories are syncing, the one that initiates the transaction is
to sync (or push or pull or clone) another repository.  When two
repositories are syncing, the one that initiates the transaction is
the client and the repository that responds is the server.  The client
works by sending HTTP requests to the server with a method of "xfer"
and a content-type of "application/x-fossil".  The content is Zlib-compressed
text consisting of "cards" of instructions.  The first card of this content
is a "login" card responsible for authentication.  The login card contains
the login name of the user and a "signature" where the signature is the
SHA1 hash of a nonce and the value of USER.PW.  The nonce is the
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This means that when USER.PW holds a cleartext password, the login card
will work for both older and newer clients.  If the USER.PW on the server
only holds the SHA1 hash of the password, then only newer clients will be
able to authenticate to the server.

The client normally gets the login and password from the "remote URL".

<blockquote><pre>
http://<font color="blue">login:password</font>@servername.org/path
</pre></blockquote>
<pre>
http://<span style="color:blue">login:password</span>@servername.org/path
</pre>

For older clients, the password is used for the shared secret as stated
in the URL and with no encoding.  
For newer clients, the shared secret is derived from the password 
by transformed the password using the SHA1 hash encoding
in the URL and with no encoding.
For newer clients, the shared secret is derived from the password
by transforming the password using the SHA1 hash encoding
described above.  However, if the first character of the password is
"*" (ASCII 0x2a) then the "*" is skipped and the rest of the password
is used directly as the share secret without the SHA1 encoding.

<blockquote><pre>
http://<font color="blue">login:*password</font>@servername.org/path
</pre></blockquote>
<pre>
http://<span style="color:blue">login:*password</span>@servername.org/path
</pre>

This *-before-the-password trick can be used by newer clients to
sync against a legacy server that does not understand the new SHA1
password encoding.
Added www/patchcmd.md.
















































































































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# The "fossil patch" command

The "[fossil patch](/help?cmd=patch)" command is designed to transfer
uncommitted changes from one check-out to another, including transfering
those changes to other machines.

For example, if you are working on a Windows desktop and you want to
test your changes on a Linux server before you commit, you can use the
"fossil patch push" command to make a copy of all your changes on the
remote Linux server:

   fossil patch push linuxserver:/path/to/checkout

In the previous line "linuxserver" is the name of the remote machine and
"/path/to/checkout" is an existing checkout directory for the same project
on the remote machine.

The "fossil patch push" command works by first creating a patch file,
then transfering that patch file to the remote machine using "ssh", then
applying the patch.  If you do not have ssh available, you can break these
steps apart as follows:

  1.  On the local machine: `fossil patch create mypatch.patch`
  2.  Move "mypatch.patch" to the remote machine.
  3.  On the remote machine: `fossil patch apply mypatch.patch`

Step 2 can be accomplished by a variety of means including
posting the mypatch.patch file on [chat](./chat.md) or sending
it as an email attachment.

## Setup

The "fossil patch push" and "fossil patch pull" commands will only work if you have
"ssh" available on the local machine and if "fossil" is on the default
PATH on the remote machine.

To check if Fossil is installed correctly on the remote, try a command
like this:

    ssh -T remote "fossil version"

If the command above shows a recent version of Fossil, then you should be
set to go.  If you get "fossil not found", or if the version shown is too
old, put a newer fossil executable on the default PATH.  The default PATH
can be shown using:

    ssh -T remote 'echo $PATH'

### Custom PATH Caveat

On Unix-like systems, the init script for the user's login shell
(e.g. `~/.profile` or `~/.bash_profile`) may be configured to *not do
anything* when running under a non-interactive shell. Thus a fossil
binary installed to a custom directory might not be found. To allow
the patch command to use a fossil binary installed in a directory
which is normally added to the PATH via the interactive shell's init
script, it may be useful to disable that check. For example,
Ubuntu-derived systems sometimes start their default `.bashrc` with
something like:

```
# If not running interactively, don't do anything:
[ -z "$PS1" ] && return
# Or:
case $- in
    *i*) ;;
    *) return;;
esac
```

Commenting out that check will allow the patch command to run, for
example, `~/bin/fossil` if `~/bin` is added to the PATH via the init
script. To disable that check *only* when the shell is *not* running
over an SSH connection, something like the following should suffice:

```
if [ -z "$SSH_CONNECTION" ]; then
  # ... the is-interactive check goes here ...
fi
```


## Implementation Details

The "fossil patch create" command records all of the local, uncommitted
changes in an SQLite database file.  If the argument to "fossil patch create"
is a filename, then the patch-file database is written into that file.
If the argument is "-" then the database is written on standard output.

The "fossil patch apply" command reads the patch-file database 
and applies it to the local check-out.  If a filename is given as an
argument, then the database is read from that file.  If the argument is "-"
then the database is read from standard input.

Hence the command:

    fossil patch push remote:projectA

Is equivalent to:

    fossil patch create - | ssh -T remote 'cd projectA;fossil patch apply -'

Likewise, a command like this:

    fossil patch pull remote:projB

could be entered like this:

    ssh -T remote 'cd projB;fossil patch create -' | fossil patch apply -

The "fossil patch view" command just opens the patch-file database and prints
a summary of its contents on standard output.
Added www/permutedindex.html.











































































































































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<div class='fossil-doc' data-title='Index Of Fossil Documentation'>

<form action='$ROOT/docsrch' method='GET' style="text-align:center">
<input type="text" name="s" size="40" autofocus>
<input type="submit" value="Search Docs">
</form>
<h2>Primary Documents:</h2>
<ul>
<li> <a href='quickstart.wiki'>Quick-start Guide</a>
<li> <a href='$ROOT/help'>Built-in help for commands and webpages</a>
<li> <a href='history.md'>Purpose and History of Fossil</a>
<li> <a href='build.wiki'>Compiling and installing Fossil</a>
<li> <a href='../COPYRIGHT-BSD2.txt'>License</a>
<li> <a href='userlinks.wiki'>Miscellaneous Docs for Fossil Users</a>
<li> <a href='hacker-howto.wiki'>Fossil Developer's Guide</a>
<li><a href='$ROOT/wiki?name=Release Build How-To'>Release Build How-To</a>,
a.k.a.  how deliverables are built</li>
</li>
<li> <a href='$ROOT/wiki?name=To+Do+List'>To Do List (Wiki)</a>
<li> <a href='https://fossil-scm.org/fossil-book/'>Fossil book</a>
</ul>
<h2 id="pindex">Other Documents:</h2>
<ul>
<li><a href="tech_overview.wiki">A Technical Overview Of The Design And Implementation Of Fossil</a></li>
<li><a href="serverext.wiki">Adding Extensions To A Fossil Server Using CGI Scripts</a></li>
<li><a href="adding_code.wiki">Adding New Features To Fossil</a></li>
<li><a href="caps/">Administering User Capabilities (a.k.a. Permissions)</a></li>
<li><a href="backup.md">Backing Up a Remote Fossil Repository</a></li>
<li><a href="whyusefossil.wiki">Benefits Of Version Control</a></li>
<li><a href="branching.wiki">Branching, Forking, Merging, and Tagging</a></li>
<li><a href="bugtheory.wiki">Bug Tracking In Fossil</a></li>
<li><a href="cgi.wiki">CGI Script Configuration Options</a></li>
<li><a href="serverext.wiki">CGI Server Extensions</a></li>
<li><a href="checkin_names.wiki">Check-in And Version Names</a></li>
<li><a href="checkin.wiki">Check-in Checklist</a></li>
<li><a href="ckout-workflows.md">Check-Out Workflows</a></li>
<li><a href="foss-cklist.wiki">Checklist For Successful Open-Source Projects</a></li>
<li><a href="co-vs-up.md">Checkout vs Update</a></li>
<li><a href="childprojects.wiki">Child Projects</a></li>
<li><a href="colordiff.md">Colorized Diffs</a></li>
<li><a href="build.wiki">Compiling and Installing Fossil</a></li>
<li><a href="contribute.wiki">Contributing Code or Documentation To The Fossil Project</a></li>
<li><a href="copyright-release.html">Contributor License Agreement</a></li>
<li><a href="private.wiki">Creating, Syncing, and Deleting Private Branches</a></li>
<li><a href="customskin.md">Custom Skins</a></li>
<li><a href="custom_ticket.wiki">Customizing The Ticket System</a></li>
<li><a href="antibot.wiki">Defense against Spiders and Robots</a></li>
<li><a href="delta-manifests.md">Delta Manifests</a></li>
<li><a href="contact.md">Developer Contact Information</a></li>
<li><a href="caps/admin-v-setup.md">Differences Between Setup and Admin Users</a></li>
<li><a href="alerts.md">Email Alerts And Notifications</a></li>
<li><a href="embeddeddoc.wiki">Embedded Project Documentation</a></li>
<li><a href="env-opts.md">Environment Variables and Global Options</a></li>
<li><a href="event.wiki">Events</a></li>
<li><a href="globs.md">File Name Glob Patterns</a></li>
<li><a href="cap-theorem.md">Fossil and the CAP Theorem</a></li>
<li><a href="changes.wiki">Fossil Changelog</a></li>
<li><a href="chat.md">Fossil Chat</a></li>
<li><a href="concepts.wiki">Fossil Core Concepts</a></li>
<li><a href="css-tricks.md">Fossil CSS Tips and Tricks</a></li>
<li><a href="delta_encoder_algorithm.wiki">Fossil Delta Encoding Algorithm</a></li>
<li><a href="delta_format.wiki">Fossil Delta Format</a></li>
<li><a href="hacker-howto.wiki">Fossil Developers Guide</a></li>
<li><a href="fileformat.wiki">Fossil File Format</a></li>
<li><a href="forum.wiki">Fossil Forums</a></li>
<li><a href="grep.md">Fossil grep vs POSIX grep</a></li>
<li><a href="quickstart.wiki">Fossil Quick Start Guide</a></li>
<li><a href="selfcheck.wiki">Fossil Repository Integrity Self Checks</a></li>
<li><a href="selfhost.wiki">Fossil Self Hosting Repositories</a></li>
<li><a href="settings.wiki">Fossil Settings</a></li>
<li><a href="hints.wiki">Fossil Tips And Usage Hints</a></li>
<li><a href="fossil-v-git.wiki">Fossil Versus Git</a></li>
<li><a href="fossil_prompt.wiki">Fossilized Bash Prompt</a></li>
<li><a href="faq.wiki">Frequently Asked Questions</a></li>
<li><a href="gitusers.md">Git to Fossil Translation Guide</a></li>
<li><a href="glossary.md">Glossary</a></li>
<li><a href="hacker-howto.wiki">Hacker How-To</a></li>
<li><a href="adding_code.wiki">Hacking Fossil</a></li>
<li><a href="hashpolicy.wiki">Hash Policy: Choosing Between SHA1 and SHA3-256</a></li>
<li><a href="hashes.md">Hashes: Fossil Artifact Identification</a></li>
<li><a href="index.wiki">Home Page</a></li>
<li><a href="aboutcgi.wiki">How CGI Works In Fossil</a></li>
<li><a href="aboutdownload.wiki">How The Download Page Works</a></li>
<li><a href="server/">How To Configure A Fossil Server</a></li>
<li><a href="newrepo.wiki">How To Create A New Fossil Repository</a></li>
<li><a href="mirrortogithub.md">How To Mirror A Fossil Repository On GitHub</a></li>
<li><a href="encryptedrepos.wiki">How To Use Encrypted Repositories</a></li>
<li><a href="image-format-vs-repo-size.md">Image Format vs Fossil Repo Size</a></li>
<li><a href="inout.wiki">Import And Export To And From Git</a></li>
<li><a href="fossil-from-msvc.wiki">Integrating Fossil in the Microsoft Express 2010 IDE</a></li>
<li><a href="interwiki.md">Interwiki Links</a></li>
<li><a href="fossil-is-not-relational.md">Introduction to the (Non-relational) Fossil Data Model</a></li>
<li><a href="blockchain.md">Is Fossil A Blockchain?</a></li>
<li><a href="json-api/index.md">JSON API</a></li>
<li><a href="mirrorlimitations.md">Limitations On Git Mirrors</a></li>
<li><a href="../../../help">Lists of Commands and Webpages</a></li>
<li><a href="loadmgmt.md">Managing Server Load</a></li>
<li><a href="../../../md_rules">Markdown Formatting Rules</a></li>
<li><a href="containers.md">OCI Containers</a></li>
<li><a href="password.wiki">Password Management And Authentication</a></li>
<li><a href="stats.wiki">Performance Statistics</a></li>
<li><a href="../test/release-checklist.wiki">Pre-Release Testing Checklist</a></li>
<li><a href="pop.wiki">Principles Of Operation</a></li>
<li><a href="qandc.wiki">Questions And Criticisms</a></li>
<li><a href="quotes.wiki">Quotes: What People Are Saying About Fossil, Git, and DVCSes in General</a></li>
<li><a href="rebaseharm.md">Rebase Considered Harmful</a></li>
<li><a href="reviews.wiki">Reviews</a></li>
<li><a href="chroot.md">Server Chroot Jail</a></li>
<li><a href="shunning.wiki">Shunning: Deleting Content From Fossil</a></li>
<li><a href="../../../sitemap">Site Map</a></li>
<li><a href="style.wiki">Source Code Style Guidelines</a></li>
<li><a href="tech_overview.wiki">SQLite Databases Used By Fossil</a></li>
<li><a href="ssl-server.md">SSL/TLS Server Mode</a></li>
<li><a href="backoffice.md">The "Backoffice" mechanism of Fossil</a></li>
<li><a href="patchcmd.md">The "fossil patch" Command</a></li>
<li><a href="blame.wiki">The Annotate/Blame Algorithm Of Fossil</a></li>
<li><a href="defcsp.md">The Default Content Security Policy</a></li>
<li><a href="fileedit-page.md">The fileedit Page</a></li>
<li><a href="makefile.wiki">The Fossil Build Process</a></li>
<li><a href="sync.wiki">The Fossil Sync Protocol</a></li>
<li><a href="tickets.wiki">The Fossil Ticket System</a></li>
<li><a href="webui.wiki">The Fossil Web Interface</a></li>
<li><a href="pikchr.md">The Pikchr Diagram Language</a></li>
<li><a href="history.md">The Purpose And History Of Fossil</a></li>
<li><a href="th1.md">The TH1 Scripting Language</a></li>
<li><a href="customskin.md">Theming: Customizing The Appearance of Web Pages</a></li>
<li><a href="customgraph.md">Theming: Customizing the Timeline Graph</a></li>
<li><a href="theory1.wiki">Thoughts On The Design Of The Fossil DVCS</a></li>
<li><a href="unvers.wiki">Unversioned Files</a></li>
<li><a href="fiveminutes.wiki">Up and Running in 5 Minutes as a Single User</a></li>
<li><a href="javascript.md">Use of JavaScript in Fossil</a></li>
<li><a href="caps/ref.html">User Capability Reference</a></li>
<li><a href="ssl.wiki">Using SSL with Fossil</a></li>
<li><a href="webpage-ex.md">Webpage Examples</a></li>
<li><a href="whyallinone.md">Why Bundle Forum, Wiki, and other Web Software With Your DVCS?</a></li>
<li><a href="whyusefossil.wiki">Why You Should Use Fossil</a></li>
<li><a href="../../../wiki_rules">Wiki Formatting Rules</a></li>
<li><a href="wikitheory.wiki">Wiki In Fossil</a></li>
</ul></div>
Added www/pikchr.md.











































































































































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# The Pikchr Diagram Language

Pikchr (pronounced "picture") is a [PIC][1]-like markup language for creating
diagrams in technical documentation.  Source text for Pikchr diagrams 
can be embedded directly in either [Markdown][2] or [Fossil Wiki][3].
Fossil translates the Pikchr source text into SVG which is displayed as
part of the rendered wiki.

[1]: wikipedia:/wiki/Pic_language
[2]: /md_rules
[3]: /wiki_rules

For example, this document is written in Markdown.  The following
is a sample Pikchr diagram:

``` pikchr
arrow right 200% "Markdown" "Source"
box rad 10px "Markdown" "Formatter" "(markdown.c)" fit
arrow right 200% "HTML+SVG" "Output"
arrow <-> down 70% from last box.s
box same "Pikchr" "Formatter" "(pikchr.c)" fit
```

The diagram above was generated by the following lines of Markdown:

~~~~~
``` pikchr
arrow right 200% "Markdown" "Source"
box rad 10px "Markdown" "Formatter" "(markdown.c)" fit
arrow right 200% "HTML+SVG" "Output"
arrow <-> down 70% from last box.s
box same "Pikchr" "Formatter" "(pikchr.c)" fit
```
~~~~~

See the [original Markdown source text of this document][4] for an
example of Pikchr in operation.  

[4]: ./pikchr.md?mimetype=text/plain

Fossil allows Pikchr diagrams to appear anywhere that Markdown or
Fossil Wiki markup or used, including:

   *  [Embedded documentation](./embeddeddoc.wiki)
   *  Stand-alone wiki pages
   *  [Wiki pages associated with particular branches or check-ins](./wikitheory.wiki#assocwiki)
   *  Check-in comments
   *  [Technical notes](./event.wiki)
   *  [Forum posts](./forum.wiki)
   *  [Bug reports and trouble tickets](./bugtheory.wiki)

## Pikchr Is A Separate Project

Even though the original author of Pikchr is the same as the original
creator of Fossil, the sources to the Pikchr formatter are maintained
as a [separate project named "pikchr.org"](https://pikchr.org).
Pikchr is a delivered as a single file of C code.  The "pikchr.c" file
from the Pikchr project is periodically copied into the Fossil source
tree.  Pikchr is maintained as a project distinct from Fossil so that it
can be used independently of Fossil.

### Pikchr User Manual And Tutorials

Complete documentation on the Pikchr language can be found on the
Pikchr project page:

   *  <https://pikchr.org/>

That website contains a user manual, tutorials, a language specification,
a summary of differences between Pikchr and legacy PIC,
and it hosts copies of historical PIC documentation.

## How To Include Pikchr Diagrams In Fossil Documents

To illustrate how to include Pikchr in Fossil markup, we will use the
following one-line Pikchr.  Click to see the code:

~~~ pikchr toggle
arrow; box "Hello" "World!" fit; arrow
~~~

For Markdown, the Pikchr code is put inside of a
[fenced code block][fcb].  A fenced code block is the text in between
&#96;&#96;&#96; ... &#96;&#96;&#96; or between
&#126;&#126;&#126; ... &#126;&#126;&#126; using three or
more &#96; or &#126; characters.  The fenced code block normally
displays its content verbatim, but if an "info string"  of "pikchr"
follows the opening &#96;&#96;&#96; or &#126;&#126;&#126;, then the
content is interpreted as Pikchr script and is replaced by the
equivalent SVG.
So either of these work:

[fcb]: https://spec.commonmark.org/0.29/#fenced-code-blocks

~~~~~~
~~~ pikchr
arrow; box "Hello" "World!" fit; arrow
~~~

``` pikchr
arrow; box "Hello" "World!" fit; arrow
```
~~~~~~

For Fossil Wiki, the Pikchr code goes within 
`<verbatim type="pikchr"> ... </verbatim>`.  Normally `<verbatim>`
content is displayed verbatim.  The extra `type="pikchr"` attribute
causes the content to be interpreted as Pikchr and replaced by SVG.

~~~~~~
<verbatim type="pikchr">
arrow; box "Hello" "World!" fit; arrow
</verbatim>
~~~~~~

## Extra Arguments In "Pikchr" Code Blocks

Extra formatting arguments can be included in the fenced code block start
tag, or in the "`type=`" attribute of `<verbatim>`, to change the formatting
of the diagram.

  *  **indent**  &rarr;  The diagram is indented from the left margin.

  *  **center**  &rarr;  The diagram is centered

  *  **toggle**  &rarr;  Clicking on the diagram toggles between showing
     the rendered SVG and the original Pikchr source text.  You can always
     do this by holding down the Ctrl or Alt keys and clicking.  The
     "toggle" option just means you can toggle without holding down any
     extra keys.

  *  **float-left** &rarr;  The diagram is shown at the left margin and
     text fills in around the diagram.

  *  **float-right** &rarr;  The diagram is shown at the right margin and
     text fills in around the diagram.

  *  **source** &rarr;  The display starts out showing the Pikchr source text.
     The reader must click (or Alt-click or Ctrl-click) to show the diagram.
Changes to www/pop.wiki.
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<h1>Principles Of Operation</h1>
<title>Principles Of Operation</title>

<p>
This page attempts to define the foundational principals upon
which Fossil is built.
</p>

<ul>
<li><p>A project consists of source files, wiki pages, and 
trouble tickets, and control files (collectively "artifacts").
All historical copies of all artifacts
are saved.  The project maintains an audit
trail.</p></li>

<li><p>A project resides in one or more repositories.  Each
repository is administered and operates independently 
of the others.</p></li>

<li><p>Each repository has both global and local state.  The
global state is common to all repositories (or at least
has the potential to be shared in common when the
repositories are fully synchronized).  The local state
for each repository is private to that repository.
The global state represents the content of the project.
The local state identifies the authorized users and
access policies for a particular repository.</p></li>

<li><p>The global state of a repository is an unordered
collection of artifacts.  Each artifact is named by 
its SHA1 hash encoded in lowercase hexadecimal.
In many contexts, the name can be
abbreviated to a unique prefix.  A five- or six-character
prefix usually suffices to uniquely identify a file.</p></li>

<li><p>Because artifacts are named by their SHA1 hash, all artifacts
are immutable.  Any change to the content of a artifact also 
changes the hash that forms the artifacts name, thus
creating a new artifact.  Both the old original version of the
artifact and the new change are preserved under different names.</p></li>

<li><p>It is theoretically possible for two artifacts with different
content to share the same hash.  But finding two such
artifacts is so incredibly difficult and unlikely that we
consider it to be an impossibility.</p></li>

<li><p>The signature of an artifact is the SHA1 hash of the 
artifact itself, exactly as it would appear in a disk file.  No prefix
or meta-information about the artifact is added before computing
the hash.  So you can
always find the SHA1 signature of a file by using the
"sha1sum" command-line utility.</p></li>

<li><p>The artifacts that comprise the global state of a repository
are the complete global state of that repository.  The SQLite
database that holds the repository contains additional information
about linkages between artifacts, but all of that added information
can be discarded and reconstructed by rescanning the content
artifacts.</p></li>

<li><p>Two repositories for the same project can synchronize
their global states simply by sharing artifacts.  The local
state of repositories is not normally synchronized or
shared.</p></li>

<li><p>Every check-in has a special file at the top-level
named "manifest" which is an index of all other files in
that check-in.  The manifest is automatically created and
maintained by the system.</p></li>

<li><p>The <a href="fileformat.wiki">file formats</a>
used by Fossil are all very simple so that with access
to the original content files, one can easily reconstruct
the content of a check-in without the need for any
special tools or software.</p></li>
  *  A project consists of source files, wiki pages, and
     trouble tickets, and control files (collectively "artifacts").
     All historical copies of all artifacts
     are saved.  The project maintains an audit
     trail.
     
  *  A project resides in one or more repositories.  Each
     repository is administered and operates independently
     of the others.
     
  *  Each repository has both global and local state.  The
     global state is common to all repositories (or at least
     has the potential to be shared in common when the
     repositories are fully synchronized).  The local state
     for each repository is private to that repository.
     The global state represents the content of the project.
     The local state identifies the authorized users and
     access policies for a particular repository.
     
  *  The global state of a repository is an unordered
     collection of artifacts.  Each artifact is named by a
     cryptographic hash (SHA1 or SHA3-256) encoded in
     lowercase hexadecimal.
     In many contexts, the name can be
     abbreviated to a unique prefix.  A five- or six-character
     prefix usually suffices to uniquely identify a file.
     
  *  Because artifacts are named by a cryptographic hash, all artifacts
     are immutable.  Any change to the content of an artifact also
     changes the hash that forms the artifacts name, thus
     creating a new artifact.  Both the old original version of the
     artifact and the new change are preserved under different names.
     
  *  It is theoretically possible for two artifacts with different
     content to share the same hash.  But finding two such
     artifacts is so incredibly difficult and unlikely that we
     consider it to be an impossibility.
     
  *  The signature of an artifact is the cryptographic hash of the
     artifact itself, exactly as it would appear in a disk file.  No prefix
     or meta-information about the artifact is added before computing
     the hash.  So you can
     always find the signature of a file by using the
     "sha1sum" or "sha3sum" or similar command-line utilities.
     
  *  The artifacts that comprise the global state of a repository
     are the complete global state of that repository.  The SQLite
     database that holds the repository contains additional information
     about linkages between artifacts, but all of that added information
     can be discarded and reconstructed by rescanning the content
     artifacts.
     
  *  Two repositories for the same project can synchronize
     their global states simply by sharing artifacts.  The local
     state of repositories is not normally synchronized or
     shared.
     
  *  Every check-in has a special file at the top-level
     named "manifest" which is an index of all other files in
     that check-in.  The manifest is automatically created and
     maintained by the system.
     
  *  The <a href="fileformat.wiki">file formats</a>
     used by Fossil are all very simple so that with access
     to the original content files, one can easily reconstruct
     the content of a check-in without the need for any
     special tools or software.
Added www/private.wiki.

























































































































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<title>Private Branches</title>

By default, everything you check into a Fossil repository is shared
to all clones of that repository.  In Fossil, you don't push and pull
individual branches; you push and pull everything all at once.

But sometimes users want to keep some private work that is not
shared with others.  This might be a preliminary or experimental change
that needs further refinement before it is shared and which might never
be shared at all.  To do this in Fossil, simply commit the change with
the --private command-line option:

<pre>
fossil commit --private
</pre>

The --private option causes Fossil to put the check-in in a new branch
named "private".  That branch will not participate in subsequent clone,
sync, push, or pull operations.  The branch will remain on the one local
repository where it was created.  Note that you only use the --private
option for the first check-in that creates the private branch.
Additional checkins into the private branch remain private automatically.

<h2>Publishing Private Changes</h2>

After additional work, one might desire to publish the changes associated
with a private branch.  The usual way to do this is to merge those
changes into a public branch.  For example:

<pre>
fossil update trunk
fossil merge private
fossil commit
</pre>

The private branch remains private and is not recorded as a parent
in the merge manifest's P-card, but all of the changes associated with
the private branch are now folded into the public branch and are hence
visible to other users of the project.

A private branch created with Fossil version 1.30 or newer can also be
converted into a public branch using the <code>fossil publish</code>
command.  However, there is no way to convert a private branch created with
older versions of Fossil into a public branch.

<div class="sidebar">
To avoid generating a missing artifact
reference on peer repositories without the private branch, the merge parent
is not recorded when merging the private branch into a public branch.  As a
consequence, the web UI timeline does not draw a merge line from the private
merge parent to the public merge child.  Moreover, repeat private-to-public
merge operations (without the [/help?cmd=merge | --force option]) with files
added on the private branch may only work once, but later abort with
"WARNING: no common ancestor for FILE", as the parent-child relationship is
not recorded. (See the [/doc/trunk/www/branching.wiki | Branching, Forking,
Merging, and Tagging] document for more information.)
</div>

The <code>--integrate</code> option of <code>fossil merge</code> (to close
the merged branch when committing) is ignored for a private branch -- or the
check-in manifest of the resulting merge child would include a
<code>+close</code> tag referring to the leaf check-in on the private branch,
and generate a missing artifact reference on repository clones without that
private branch.  It's still possible to close the leaf of the private branch
(after committing the merge child) with the <code>fossil amend --close</code>
command.

<h2>Syncing Private Branches</h2>

A private branch normally stays on the one repository where it was
originally created.  But sometimes you want to share private branches
with another repository.  For example, you might be building a cross-platform
application and have separate repositories on your Windows laptop,
your Linux desktop, and your iMac.  You can transfer private branches
between these machines by using the --private option on the "sync",
"push", "pull", and "clone" commands.  For example, if you are running
"fossil server" on your Linux box and you want to clone that repository
to your Mac, including all private branches, use:

<verbatim>
fossil clone --private http://user@linux.localnetwork:8080/ mac-clone.fossil
</verbatim>

You'll have to supply a username and password in order for this to work.
Fossil will not clone (or sync) private branches anonymously.

By default, there are no users that can do private branch syncing.  You
will have to give a user
the "Private" capability ("x") if you want them to be able to do this.
We deny such capability for normal users by default to add a barrier to
accidental syncing of a private branch to a public server. It is highly recommended that
you leave the "x" capability turned off on all repositories used for
collaboration (repositories to which many people push and pull) and
only enable "x" for local repositories when you need to share private
branches.

Private branch sync only works if you use the --private command-line option.
Private branches are never synced via the auto-sync mechanism.  Once
again, this restriction is designed to make it hard to accidentally
push private branches beyond their intended audience.

<h2>Purging Private Branches</h2>

You can remove all private branches from a repository using this command:

<pre>
fossil scrub --private
</pre>

Note that the above is a permanent and irreversible change.  You will
be asked to confirm before continuing.  Once the private branches are
removed, they cannot be retrieved (unless you have synced them to another
repository.)  So be careful with the command.

<h2>Additional Notes</h2>

All of the features above apply to <u>all</u> private branches in a
single repository at once.  There is no mechanism in Fossil (currently)
that allows you to push, pull, clone, sync, or scrub an individual
private branch within a repository that contains multiple private
branches.
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<nowiki>
<h1 align="center">Questions And Criticisms</h1>
<title>Questions And Criticisms</title>

<p>This page is a collection of real questions and criticisms that have been
raised against fossil together with responses from the program's author.</p>

This page is a collection of real questions and criticisms that were
raised against Fossil early in its history (circa 2008).
This page is old and has not been kept up-to-date.  See the
<p>Note: See also the <a href="faq.wiki">Frequently Asked Questions</a>.</p>
[/finfo?name=www/qandc.wiki|change history of this page].

<b>Fossil sounds like a lot of reinvention of the wheel.
Why create your own DVCS when you could have reused mercurial?</b>

<blockquote>
  <p>I wrote fossil because none of the
<div class="indent">
  I wrote fossil because none of the
  other available DVCSes met my needs.  If the other DVCSes do
  meet your needs, then you might not need fossil.  But they
  don't meet mine, and so fossil is necessary for me.</p>
  don't meet mine, and so fossil is necessary for me.

  <p>Features provided by fossil that one does not get with other
  DVCSes include:</p>
  Features provided by fossil that one does not get with other
  DVCSes include:

  <ol>
  <li> Integrated <a href="wikitheory.wiki">wiki</a>. </li>
  <li> Integrated <a href="bugtheory.wiki">bug tracking</a> </li>
  <li> Immutable artifacts </li>
  <li> Self-contained, stand-alone executable that can be run in
       a <a href="http://en.wikipedia.org/wiki/Chroot">chroot jail</a> </li>
  <li> Simple, well-defined, 
  <li> Simple, well-defined,
       <a href="fileformat.wiki">enduring file format</a> </li>
  <li> Integrated <a href="webui.wiki">web interface</a> </li>
  </ol>
</blockquote>
</div>

<b>Why should I use this rather than Trac?</b>

<blockquote>
<div class="indent">
  <ol>
  <li> Fossil is distributed.  You can view and/or edit tickets, wiki, and
       code while off network, then sync your changes later.  With Trac, you
       can only view and edit tickets and wiki while you are connected to
       the server. </li>
  <li> Fossil is lightweight and fully self-contained.  It is very easy 
  <li> Fossil is lightweight and fully self-contained.  It is very easy
       to setup on a low-resource machine. Fossil does not require an
       administator.</li>
       administrator.</li>
  <li> Fossil integrates code versioning into the same repository with
       wiki and tickets.  There is nothing extra to add or install.
       Fossil is an all-in-one turnkey solution. </li>
  </ol>
</blockquote>
</div>

<b>Love the concept here. Anyone using this for real work yet?</b>

<blockquote>
Fossil is <a href="http://www.fossil-scm.org/">self-hosting</a>. 
<div class="indent">
Fossil is <a href="https://fossil-scm.org/">self-hosting</a>.
In fact, this page was probably delivered
to your web-browser via a working fossil instance.  The same virtual
machine that hosts http://www.fossil-scm.org/
machine that hosts https://fossil-scm.org/
(a <a href="http://www.linode.com/">Linode 720</a>)
also hosts 24 other fossil repositories for various small projects.
The documentation files for 
The documentation files for
<a href="http://www.sqlite.org/">SQLite</a> are hosted in a
fossil repository <a href="http://www.sqlite.org/docsrc/">here</a>,
for example.
Other projects are also adopting fossil.  But fossil does not yet have
the massive user base of git or mercurial.
</blockquote>
</div>

<b>Fossil looks like the bug tracker that would be in your 
Linksys Router's administration screen.</p>
<b>Fossil looks like the bug tracker that would be in your
Linksys Router's administration screen.</b>

<blockquote>
<p>I take a pragmatic approach to software: form follows function.
<div class="indent">
I take a pragmatic approach to software: form follows function.
To me, it is more important to have a reliable, fast, efficient,
enduring, and simple DVCS than one that looks pretty.</p>
enduring, and simple DVCS than one that looks pretty.

<p>On the other hand, if you have patches that improve the apparance
of Fossil without seriously compromising its reliablity, performance,
On the other hand, if you have patches that improve the appearance
of Fossil without seriously compromising its reliability, performance,
and/or maintainability, I will be happy to accept them.  Fossil is
self-hosting.  Send email to request a password that will let
you push to the main fossil repository.</p>
</blockquote>
you push to the main fossil repository.
</div>

<b>It would be useful to have a separate application that
keeps the bug-tracking database in a versioned file. That file can
then be pushed and pulled along with the rest repository.</b>

<blockquote>
<p>Fossil already <u>does</u> push and pull bugs along with the files
in your repository.  
<div class="indent">
Fossil already <u>does</u> push and pull bugs along with the files
in your repository.
But fossil does <u>not</u> track bugs as files in the source tree.
That approach to bug tracking was rejected for three reasons:</p>
That approach to bug tracking was rejected for three reasons:

<ol>
<li>  Check-ins in fossil are immutable.  So if
      tickets were part of the check-in, then there would be no way to add
      new tickets to a check-in as new bugs are discovered.

<li>  Any project of reasonable size and complexity will generate thousands
      and thousands of tickets, and we do not want all those ticket files
      cluttering the source tree.

<li>  We want tickets to be managed from the web interface and to have a
      permission system that is distinct from check-in permissions.
      In other words, we do not want to restrict the creation and editing
      of tickets to developers with check-in privileges and an installed
      copy of the fossil executable.  Casual passers-by on the internet should
      be permitted to create tickets.
</ol>

<p>These points are reiterated in the opening paragraphs of
the <a href="bugtheory.wiki">Bug-Tracking In Fossil</a> document.</p>
</blockquote>
These points are reiterated in the opening paragraphs of
the <a href="bugtheory.wiki">Bug-Tracking In Fossil</a> document.
</div>

<b>Fossil is already the name of a plan9 versioned 
<b>Fossil is already the name of a plan9 versioned
append-only filesystem.</b>

<blockquote>
<div class="indent">
I did not know that.  Perhaps they selected the name for the same reason that
I did: because a repository with immutable artifacts preserves
an excellent fossil record of a long-running project.
</blockquote>
</div>

<b>The idea of storing a repository in a binary blob like an
SQLite database terrifies me.</b>

<blockquote>
<div class="indent">
The use of SQLite to store the database is likely more stable and secure
than any other approach, due to the fact that SQLite is transactional.
Fossil also implements several internal
<a href="selfcheck.wiki">self-checks</a> to insure that no information
is ever lost.
</blockquote>
</div>


<b>I am dubious of the benefits of including wikis and bug trackers
directly in the VCS - either they are under-featured compared to full
software like Trac, or the VCS is massively bloated compared to
Subversion or Bazaar.</b>

<blockquote>
<p>I have no doubt that Trac has many features that fossil lacks.  But that
<div class="indent">
I have no doubt that Trac has many features that fossil lacks.  But that
is not the point.  Fossil has several key features that Trac lacks and that
I need:  most notably the fact that 
fossil supports disconnected operation.</p>
I need:  most notably the fact that
fossil supports disconnected operation.

<p>As for bloat:  Fossil is a single self-contained executable.
You do not need any other packages 
As for bloat:  Fossil is a single self-contained executable.
You do not need any other packages
(diff, patch, merge, cvs, svn, rcs, git, python, perl, tcl, apache,
sqlite, and so forth)
SQLite, and so forth)
in order to run fossil.  Fossil runs just fine in a chroot jail all
by itself.  And the self-contained fossil
executable is much less than 1MB in size.
Fossil is the very opposite of bloat.</p>
executable is much less than 1MB in size.  (Update 2015-01-12: Fossil has
grown in the years since the previous sentence was written but is still
much less than 2MB according to "size" when compiled using -Os on x64 Linux.)
Fossil is the very opposite of bloat.
</blockquote>

</div>

</nowiki>
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<title>Fossil Quick Start Guide</title>
<nowiki>
<h1 align="center">Fossil Quick Start</h1>

<p>This is a guide to get you started using fossil quickly
and painlessly.</p>
This is a guide to help you get started using the Fossil [https://en.wikipedia.org/wiki/Distributed_version_control|Distributed Version Control System] quickly
and painlessly.

<h2>Installing</h2><blockquote>
<h2 id="install">Installing</h2>

    <p>Fossil is a single self-contained C program.  You need to
    either download a 
    <a href="http://www.fossil-scm.org/download.html">precompiled binary</a>
    or <a href="build.wiki">build it yourself</a> from sources.
    Install fossil by putting the fossil binary
    someplace on your PATH environment variable.</p>
    
</blockquote>
<a name="fslclone"></a>
<h2>Cloning An Existing Repository</h2><blockquote>
Fossil is a single self-contained C program.  You need to
either download a
[https://fossil-scm.org/home/uv/download.html|precompiled
binary]
or <a href="build.wiki">compile it yourself</a> from sources.
Install Fossil by putting the fossil binary
someplace on your $PATH.

You can test that Fossil is present and working like this:

<pre><b>fossil version
This is fossil version 2.13 [309af345ab] 2020-09-28 04:02:55 UTC
</b></pre>

<h2 id="workflow" name="fslclone">General Work Flow</h2>

Fossil works with repository files (a database in a single file with the project's
complete history) and with checked-out local trees (the working directory
you use to do your work). 
(See [./glossary.md | the glossary] for more background.)
The workflow looks like this:

<ul>
    <li>Create or clone a repository file.  ([/help/init|fossil init] or
        [/help/clone | fossil clone])
    <li>Check out a local tree.  ([/help/open | fossil open])
    <li>Perform operations on the repository (including repository
        configuration).
</ul>

Fossil can be entirely driven from the command line. Many features
can also be conveniently accessed from the built-in web user interface.

The following sections give a brief overview of these
operations.

<h2 id="new">Starting A New Project</h2>

To start a new project with fossil create a new empty repository
this way: ([/help/init | more info])

<pre><b>fossil init</b> <i>repository-filename</i>
</pre>

You can name the database anything you like, and you can place it anywhere in the filesystem.
The <tt>.fossil</tt> extension is traditional but only required if you are going to use the 
<tt>[/help/server | fossil server DIRECTORY]</tt> feature.â€

<h2 id="clone">Cloning An Existing Repository</h2>

    <p>Most fossil operations interact with a repository that is on the
    local disk drive, not on a remote system.  Hence, before accessing
    a remote repository it is necessary to make a local copy of that
    repository.  Making a local copy of a remote repository is called
    "cloning".</p>
    
    <p>Clone a remote repository as follows:</p>
    
Most fossil operations interact with a repository that is on the
local disk drive, not on a remote system.  Hence, before accessing
a remote repository it is necessary to make a local copy of that
repository.  Making a local copy of a remote repository is called
"cloning".

Clone a remote repository as follows: ([/help/clone | more info])

    <blockquote>
    <b>fossil clone</b> <i>URL  repository-filename</i>
    </blockquote>
    
    <p>The <i>URL</i> above is the http URL for the fossil repository
<pre><b>fossil clone</b> <i>URL repository-filename</i>
</pre>

The <i>URL</i> specifies the fossil repository
    you want to clone, and it may include a "user:password" part, e.g.
    <tt>http://drh:secret@www.fossil-scm.org/fossil</tt>. You can
    call the new repository anything you want - there are no naming
    restrictions.  As an example, you can clone the fossil repository
    this way:</p>
    
you want to clone.  The <i>repository-filename</i> is the new local
filename into which the cloned repository will be written.  For
example, to clone the source code of Fossil itself:

    <blockquote>
    <b>fossil clone http://www.fossil-scm.org/ myclone.fossil</b>
    </blockquote>
<pre><b>fossil clone https://fossil-scm.org/ myclone.fossil</b></pre>

If your logged-in username is 'exampleuser', you should see output something like this:

<pre><b>Round-trips: 8   Artifacts sent: 0  received: 39421
Clone done, sent: 2424  received: 42965725  ip: 10.10.10.0
Rebuilding repository meta-data...
100% complete...
Extra delta compression... 
Vacuuming the database... 
project-id: 94259BB9F186226D80E49D1FA2DB29F935CCA0333
server-id:  016595e9043054038a9ea9bc526d7f33f7ac0e42
admin-user: exampleuser (password is "yoWgDR42iv")>
</b></pre>
    <p>The new local copy of the respository is stored in a single file,
    which in the example above is named "myclone.fossil".
    You can name your repositories anything you want.  The ".fossil" suffix
    is not required.</p>

If the remote repository requires a login, include a
userid in the URL like this:

<pre><b>fossil clone https://</b><i>remoteuserid</i><b>@www.example.org/ myclone.fossil</b></pre>

You will be prompted separately for the password.
Use [https://en.wikipedia.org/wiki/Percent-encoding#Percent-encoding_reserved_characters|"%HH"] escapes for special characters in the userid.
For example "/" would be replaced by "%2F" meaning that a userid of "Projects/Budget" would become "Projects%2FBudget")

    <p>Note: If you are behind a restrictive firewall, you might need
    to <a href="#proxy">specify an HTTP proxy</a> to use.</p>
    
If you are behind a restrictive firewall, you might need
to <a href="#proxy">specify an HTTP proxy</a>.

</blockquote><h2>Starting A New Project</h2><blockquote>

    <p>To start a new project with fossil, create a new empty repository
A Fossil repository is a single disk file.  Instead of cloning,
you can just make a copy of the repository file (for example, using
    this way:</p>
    
    <blockquote>
    <b>fossil new </b><i> repository-filename</i>
    </blockquote>
    
</blockquote><h2>Configuring Your Local Repository</h2><blockquote>
    
"scp").  Note, however, that the repository file contains auxiliary
information above and beyond the versioned files, including some
sensitive information such as password hashes and email addresses.  If you
want to share Fossil repositories directly by copying, consider running the
[/help/scrub|fossil scrub] command to remove sensitive information
before transmitting the file.

<h2 id="import">Importing From Another Version Control System</h2>

Rather than start a new project, or clone an existing Fossil project,
you might prefer to
<a href="./inout.wiki">import an existing Git project</a>
into Fossil using the [/help/import | fossil import] command. 

You can even decide to export your project back into git using the
[/help/git | fossil git] command, which is how the Fossil project maintains
[https://github.com/drhsqlite/fossil-mirror | its public GitHub mirror]. There
is no limit to the number of times a tree can be imported and exported between
Fossil and git.

The [https://git-scm.com/docs/git-fast-export|Git fast-export format] has become
a popular way to move files between version management systems, including from
[https://www.mercurial-scm.org/|Mercurial].
Fossil can also import [https://subversion.apache.org/|Subversion projects] directly.

<h2 id="checkout">Checking Out A Local Tree</h2>

    <p>When you create a new repository, either by cloning an existing
    project or create a new project of your own, you usually want to do some
To work on a project in fossil, you need to check out a local
    local configuration.  This is easily accomplished using the webserver
    that is built into fossil.  Start the fossil webserver like this:</p>
    
copy of the source tree.  Create the directory you want to be
the root of your tree and cd into that directory.  Then
do this: ([/help/open | more info])

    <blockquote>
    <b>fossil ui </b><i> repository-filename</i>
<pre><b>fossil open</b> <i>repository-filename</i></pre>
    </blockquote>

    <p>This starts a web server then automatically launches your
    web browser and makes it point to this web server.  If your system
    has an unusual configuration, fossil might not be able to figure out
    how to start your web browser.  In that case, first tell fossil
    where to find your web browser using a command like this:</p>
for example:

    <blockquote>
    <b>fossil setting web-browser </b><i>  path-to-web-browser</i>
    </blockquote>
   
    <p>By default, fossil does not require a login for HTTP connections
    coming in from the IP loopback address 127.0.0.1.  You can, and perhaps
<pre><b>fossil open ../myclone.fossil
    BUILD.txt
    COPYRIGHT-BSD2.txt
    README.md
      ︙
</tt></b></pre>

(or "fossil open ..\myclone.fossil" on Windows).

    should, change this after you create a few users.</p>
    
This leaves you with the newest version of the tree
checked out.
From anywhere underneath the root of your local tree, you
can type commands like the following to find out the status of
your local tree:

    <p>When you are finished configuring, just press Control-C or use
    the <b>kill</b> command to shut down the mini-server.</p>
<pre>
<b>[/help/info | fossil info]</b>
<b>[/help/status | fossil status]</b>
<b>[/help/changes | fossil changes]</b>
<b>[/help/diff | fossil diff]</b>
<b>[/help/timeline | fossil timeline]</b>
<b>[/help/ls | fossil ls]</b>
<b>[/help/branch | fossil branch]</b>
</pre>

</blockquote><h2>Checking Out A Local Tree</h2><blockquote>
If you created a new repository using "fossil init" some commands will not
produce much output.

    <p>To work on a project in fossil, you need to check out a local
    copy of the source tree.  Create the directory you want to be
    the root of your tree and cd into that directory.  Then
    do this:</p>
    
    <blockquote>
    <b>fossil open </b><i> repository-filename</i>
    </blockquote>
    
    <p>This leaves you with the newest version of the tree
    checked out.    
    From anywhere underneath the root of your local tree, you
    can type commands like the following to find out the status of
    your local tree:</p>
Note that Fossil allows you to make multiple check-outs in
separate directories from the same repository.  This enables you,
for example, to do builds from multiple branches or versions at
the same time without having to generate extra clones.

To switch a checkout between different versions and branches,
use:<

<pre>
<b>[/help/update | fossil update]</b>
<b>[/help/checkout | fossil checkout]</b>
</pre>

[/help/update | update] honors the "autosync" option and
does a "soft" switch, merging any local changes into the target
version, whereas [/help/checkout | checkout] does not
automatically sync and does a "hard" switch, overwriting local
changes if told to do so.

<h2 id="changes">Making and Committing Changes</h2>

To add new files to your project or remove existing ones, use these
commands:

    <blockquote>
    <b>fossil info</b><br>
    <b>fossil status</b><br>
    <b>fossil changes</b><br>
    <b>fossil timeline</b><br>
    <b>fossil leaves</b><br>
    <b>fossil ls</b><br>
<pre>
<b>[/help/add | fossil add]</b> <i>file...</i>
<b>[/help/rm | fossil rm]</b> <i>file...</i>
<b>[/help/addremove | fossil addremove]</b> <i>file...</i>
</pre>

The command:

<pre><b>[/help/changes | fossil changes]</b></pre>

lists files that have changed since the last commit to the repository. For
example, if you edit the file "README.md":

<pre><b>fossil changes
    <b>fossil branch list</b><br>
    </blockquote>
EDITED     README.md
</b></pre>

</blockquote><h2>Making Changes</h2><blockquote>
To see exactly what change was made you can use the command
<b>[/help/diff | fossil diff]</b>:

<pre><b>fossil diff
Index: README.md
============================================================
--- README.md
+++ README.md
@@ -1,5 +1,6 @@
    <p>To add new files to your project, or remove old files, use these
    commands:</p>
+Made some changes to the project
# Original text
</b></pre>

    <blockquote>
    <b>fossil add</b> <i>file...</i><br>
    <b>fossil rm</b> <i>file...</i>
"fossil diff" shows the difference between your tree on disk now and as
the tree was when you last committed changes. If you haven't committed
yet, then it shows the difference relative to the tip-of-trunk commit in
the repository, being what you get when you "fossil open" a repository
    </blockquote>
without specifying a version, populating the working directory.

    <p>You can also edit files freely.  Once you are ready to commit
    your changes, type:</p>
To see the most recent changes made to the repository by other users, use "fossil timeline" to
find out the most recent commit, and then "fossil diff" between that commit and the
current tree:

    <blockquote>
    <b>fossil commit</b>
    </blockquote>
<pre><b>fossil timeline
=== 2021-03-28 === 
03:18:54 [ad75dfa4a0] *CURRENT* Added details to frobnicate command (user: user-one tags: trunk) 
=== 2021-03-27 === 
23:58:05 [ab975c6632] Update README.md. (user: user-two tags: trunk) 
     â‹® 

fossil diff --from current --to ab975c6632
Index: frobnicate.c
============================================================
--- frobnicate.c
+++ frobnicate.c
@@ -1,10 +1,11 @@
+/* made a change to the source file */
# Original text
</b></pre>

"current" is an alias for the checkout version, so the command
"fossil diff --from ad75dfa4a0 --to ab975c6632" gives identical results.
    <p>You will be prompted for check-in comments using whatever editor

    is specified by your VISUAL or EDITOR environment variable.  If you
    have GPG installed, you may be prompted for your GPG passphrase so
    that the check-in can be signed with your GPG signature.  After
    this your changes will be checked in.</p>
To commit your changes to a local-only repository:

</blockquote><h2>Sharing Changes</h2><blockquote>

<pre><b>fossil commit</b>     <i>(... Fossil will start your editor, if defined)</i><b>
# Enter a commit message for this check-in. Lines beginning with # are ignored.
#
    <p>The changes you <b>commit</b> are only on your local repository.
    To share those changes with other repositories, do:</p>

# user: exampleuser
# tags: trunk
#
    <blockquote>
    <b>fossil push</b> <i>URL</i>
    </blockquote>
# EDITED     README.md
Edited file to add description of code changes
New_Version: 7b9a416ced4a69a60589dde1aedd1a30fde8eec3528d265dbeed5135530440ab
</b></pre>

    <p>Where <i>URL</i> is the http: URL of the server repository you
    want to share your changes with.  If you omit the <i>URL</i> argument,
    fossil will use whatever server you most recently synced with.</p>
You will be prompted for check-in comments using whatever editor
is specified by your VISUAL or EDITOR environment variable. If none is
specified Fossil uses line-editing in the terminal.

    <p>The <b>push</b> command only sends your changes to others.  To
To commit your changes to a repository that was cloned from a remote
    Receive changes from others, use <b>pull</b>.  Or go both ways at
    once using <b>sync</b>:</p>
repository, you give the same command, but the results are different.
Fossil defaults to [./concepts.wiki#workflow|autosync] mode, a
single-stage commit that sends all changes committed to the local
repository immediately on to the remote parent repository. This only
works if you have write permission to the remote respository.

<h2 id="naming">Naming of Files, Checkins, and Branches</h2>
    <blockquote>
    <b>fossil pull</b> <i>URL</i><br>
    <b>fossil sync</b> <i>URL</i>
    </blockquote>

Fossil deals with information artifacts. This Quickstart document only deals
with files and collections of files, but be aware there are also tickets, wiki pages and more. 
Every artifact in Fossil has a universally-unique hash id, and may also have a
human-readable name.

    <p>When you pull in changes from others, they go into your repository,
    not into your checked-out local tree.  To get the changes into your
The following are all equivalent ways of identifying a Fossil file,
checkin or branch artifact:
    local tree, use <b>update</b>:</p>

    <blockquote>
<ul>
    <b>fossil update</b> <i>AID</i>
    </blockquote>
<li> the full unique SHA-256 hash, such as be836de35a821523beac2e53168e135d5ebd725d7af421e5f736a28e8034673a
<li> an abbreviated hash prefix, such as the first ten characters: be836de35a . This won't be universally unique, but it is usually unique within any one repository. As an example, the [https://fossil-scm.org/home/hash-collisions|Fossil project hash collisions] showed at the time of writing that there are no artifacts with identical first 8 characters
<li> a branch name, such as "special-features" or "juliet-testing". Each branch also has a unique SHA-256 hash
</ul>

    <p>The <i>AID</i> is some unique abbreviation to the 40-character
    artifact identifier (AID) for a particular check-in.  If you omit
    the <i>AID</i> fossil moves you to the
    leaf version of the branch your are currently on.  If your branch
    has multiple leaves, you get an error - you'll have to specify the
    leaf you want using a <i>AID</i> argument.</p>
A special convenience branch is "trunk", which is Fossil's default branch name for
the first checkin, and the default for any time a branch name is needed but not
specified.

This will get you started on identifying checkins. The
<a href="./checkin_names.wiki">Checkin Names document</a> is a complete reference, including
how timestamps can also be used.

<h2 id="config">Configuring Your Local Repository</h2>

When you create a new repository, either by cloning an existing
project or create a new project of your own, you usually want to do some
local configuration.  This is easily accomplished using the web-server
that is built into fossil.  Start the fossil web server like this:
([/help/ui | more info])

<pre>
<b>fossil ui</b> <i>repository-filename</i>
</pre>

</blockquote><h2>Branching And Merging</h2><blockquote>
You can omit the <i>repository-filename</i> from the command above
if you are inside a checked-out local tree.

    <p>You can create branches by doing multiple commits off of the
    same base version.  To merge to branches back together, first
    <b>update</b> to the leaf of one branch.  Then do a <b>merge</b>
    of the leaf of the other branch:</p>
This starts a web server then automatically launches your
web browser and makes it point to this web server.  If your system
has an unusual configuration, fossil might not be able to figure out
how to start your web browser.  In that case, first tell fossil
where to find your web browser using a command like this:

<pre>
<b>fossil setting web-browser</b> <i>path-to-web-browser</i>
</pre>

    <blockquote>
    <b>fossil merge</b> <i>AID</i>
    </blockquote>
By default, fossil does not require a login for HTTP connections
coming in from the IP loopback address 127.0.0.1.  You can, and perhaps
should, change this after you create a few users.

When you are finished configuring, just press Control-C or use
the <b>kill</b> command to shut down the mini-server.

<h2 id="sharing">Sharing Changes</h2>
    <p>Test to make sure your merge didn't mess up the code, then
    <b>commit</b> and possibly also <b>push</b> your changes.   Remember
    that nobody else can see your changes until you <b>commit</b> and
    if other are using a different repository you will also need to
    <b>push</b>.</p>

<a name="serversetup"></a>

When [./concepts.wiki#workflow|autosync] is turned off,
the changes you [/help/commit | commit] are only
on your local repository.
To share those changes with other repositories, do:

<pre>
<b>[/help/push | fossil push]</b> <i>URL</i>
</pre>

Where <i>URL</i> is the http: URL of the server repository you
want to share your changes with.  If you omit the <i>URL</i> argument,
fossil will use whatever server you most recently synced with.
</blockquote><h2>Setting Up A Server</h2><blockquote>

    <p>The easiest way to set up a server is:</p>
The [/help/push | push] command only sends your changes to others.  To
Receive changes from others, use [/help/pull | pull].  Or go both ways at
once using [/help/sync | sync]:

    <blockquote>
    <b>fossil server</b> <i>repository-filename</i>
    </blockquote>
<pre>
<b>[/help/pull | fossil pull]</b> <i>URL</i>
<b>[/help/sync | fossil sync]</b> <i>URL</i>
</pre>

    <p>Or</b>
When you pull in changes from others, they go into your repository,
not into your checked-out local tree.  To get the changes into your
local tree, use [/help/update | update]:

    <blockquote>
    <b>fossil ui</b> <i>repository-filename</i>
    </blockquote>
<pre>
<b>[/help/update | fossil update]</b> <i>VERSION</i>
</pre>

    <p>The difference between these two command is that <b>ui</b>
    attempts to automatically start your web browser pointing at the
The <i>VERSION</i> can be the name of a branch or tag or any
abbreviation to the 40-character
artifact identifier for a particular check-in, or it can be a
date/time stamp.  ([./checkin_names.wiki | more info])
If you omit
    server whereas <b>server</b> does not.
    You can omit the <i>repository-filename</i> if you are within
    a checked-out local tree.  This server uses port 8080 by default
the <i>VERSION</i>, then fossil moves you to the
latest version of the branch you are currently on.

    but you can specify a different port using the <b>-port</b> command.</p>
The default behavior is for [./concepts.wiki#workflow|autosync] to
be turned on.  That means that a [/help/pull|pull] automatically occurs
when you run [/help/update|update] and a [/help/push|push] happens
automatically after you [/help/commit|commit].  So in normal practice,
the push, pull, and sync commands are rarely used.  But it is important
to know about them, all the same.

    <p>Command-line servers like this are useful when two people want
    to share a repository on temporary or ad-hoc basis.  For a more
    permanent installation, you should use either the CGI server or the
    inetd server.
    <a name="cgiserver"></a>
    To use the CGI server, create a CGI script that
    looks something like this:</p>
<pre>
<b>[/help/checkout | fossil checkout]</b> <i>VERSION</i>
</pre>

Is similar to update except that it does not honor the autosync
setting, nor does it merge in local changes - it prefers to overwrite
them and fails if local changes exist unless the <tt>--force</tt>
flag is used.

<h2 id="branch" name="merge">Branching And Merging</h2>

Use the --branch option to the [/help/commit | commit] command
to start a new branch.  Note that in Fossil, branches are normally
created when you commit, not before you start editing.  You can
use the [/help/branch | branch new] command to create a new branch
before you start editing, if you want, but most people just wait
until they are ready to commit.

To merge two branches back together, first
[/help/update | update] to the branch you want to merge into.
Then do a [/help/merge|merge] of the other branch that you want to incorporate
the changes from.  For example, to merge "featureX" changes into "trunk"
do this:

<pre>
    <blockquote><b>
    #!/usr/local/bin/fossil<br>
    repository: /home/proj1/repos1.fossil
    </b></blockquote>
<b>fossil [/help/update|update] trunk</b>
<b>fossil [/help/merge|merge] featureX</b>
<i># make sure the merge didn't break anything...</i>
<b>fossil [/help/commit|commit]
</pre>

    <p>Adjust the paths in this CGI script to match your installation
    and make sure both repository file and the directory that contains it
    are readable and writable by the user that CGI scripts run as.
    Then point clients at the CGI script.  That's all there is to it!</p>
The argument to the [/help/merge|merge] command can be any of the
version identifier forms that work for [/help/update|update].
([./checkin_names.wiki|more info].)
The merge command has options to cherry-pick individual
changes, or to back out individual changes, if you don't want to
do a full merge.

The merge command puts all changes in your working check-out.
No changes are made to the repository.
You must run [/help/commit|commit] separately
to add the merge changes into your repository to make them persistent
and so that your coworkers can see them.
But before you do that, you will normally want to run a few tests
to verify that the merge didn't cause logic breaks in your code.
    <a name="inetdserver"></a>
    <p>You can also run fossil from inetd or xinetd.  For an inetd
    installation, make an entry in /etc/inetd.conf that looks something

The same branch can be merged multiple times without trouble. Fossil
automatically keeps up with things and avoids conflicts when doing
multiple merges.  So even if you have merged the featureX branch
into trunk previously, you can do so again and Fossil will automatically
know to pull in only those changes that have occurred since the previous
merge.

If a merge or update doesn't work out (perhaps something breaks or
    like this:</p>
there are many merge conflicts) then you back up using:

    <blockquote><b>
<pre>
    80 stream tcp nowait.1000 root /usr/bin/fossil \<br>
        /usr/bin/fossil http /home/proj1/repos1.fossil
    </b></blockquote>
<b>[/help/undo | fossil undo]</b>
</pre>

This will back out the changes that the merge or update made to the
working checkout.  There is also a [/help/redo|redo] command if you undo by
mistake.  Undo and redo only work for changes that have
not yet been checked in using commit and there is only a single
level of undo/redo.
    <p>Adjust the paths to suit your installation, of course.  Notice that

    fossil runs as root.  This is not required - you can run it as an
    unprivileged user.  But it is more secure to run fossil as root.
    When you do run fossil as root, it automatically puts itself in a
    chroot jail in the same directory as the repository, then drops
    root privileges prior to reading any information from the request.</p>

</blockquote><a name="proxy"></a><h2>HTTP Proxies</h2><blockquote>
<h2 id="server">Setting Up A Server</h2>

    <p>If you are behind a restrictive firewall that requires you to use
Fossil can act as a stand-alone web server using one of these
    an HTTP proxy to reach the internet, then you can configure the proxy
    in three different ways.  You can tell fossil about your proxy using
    a command-line option on commands that use the network,
commands:
    <b>sync</b>, <b>clone</b>, <b>push</b>, and <b>pull</b>.</p>

    <blockquote>
    <b>fossil clone </b><i>URL</i>  <b>--proxy</b> <i>Proxy-URL</i>
    </blockquote>
<pre>
<b>[/help/server | fossil server]</b> <i>repository-filename</i>
<b>[/help/ui | fossil ui]</b> <i>repository-filename</i>
</pre>

The <i>repository-filename</i> can be omitted when these commands
are run from within an open check-out, which is a particularly useful
    <p>It is annoying to have to type in the proxy URL every time you
    sync your project, though, so you can make the proxy configuration
    persistent using the <b>setting</b> command:</p>
shortcut with the <b>fossil ui</b> command.

The <b>ui</b> command is intended for accessing the web user interface
from a local desktop. (We sometimes call this mode "Fossil UI.")
The <b>ui</b> command differs from the
<b>server</b> command by binding to the loopback IP
address only (thus making the web UI visible only on the
local machine) and by automatically starting your default web browser,
pointing it at the running UI
server. The localhost restriction exists because it also gives anyone
who can access the resulting web UI full control over the
repository. (This is the [./caps/admin-v-setup.md#apsu | all-powerful
Setup capabliity].)

For cross-machine collaboration, use the <b>server</b> command instead,
which binds on all IP addresses, does not try to start a web browser,
and enforces [./caps/ | Fossil's role-based access control system].
    <blockquote>
    <b>fossil setting proxy </b><i>Proxy-URL</i>
    </blockquote>

Servers are also easily configured as:

<ul>
<li>[./server/any/inetd.md|inetd]
<li>[./server/debian/service.md|systemd]
<li>[./server/any/cgi.md|CGI]
<li>[./server/any/scgi.md|SCGI]
</ul>

…along with [./server/#matrix | several other options].
    <p>Or, you can set the "<b>http_proxy</b>" environment variable:</p>

The [./selfhost.wiki | self-hosting fossil repositories] use
CGI.

You might <i>need</i> to set up a server, whether you know it yet or
not.  See the [./server/whyuseaserver.wiki | Benefits of a Fossil Server]
article for details.
    <blockquote>
    <b>export http_proxy=</b><i>Proxy-URL</i>

<h2 id="proxy">HTTP Proxies</h2>
    </blockquote>

If you are behind a restrictive firewall that requires you to use
an HTTP proxy to reach the internet, then you can configure the proxy
    <p>To stop using the proxy, do:</p>
in three different ways.  You can tell fossil about your proxy using
a command-line option on commands that use the network,
<b>sync</b>, <b>clone</b>, <b>push</b>, and <b>pull</b>.

    <blockquote>
    <b>fossil setting proxy off</b>
    </blockquote>
<pre>
<b>fossil clone </b><i>URL</i> <b>--proxy</b> <i>Proxy-URL</i>
</pre>

    <p>Or unset the environment variable.  The fossil setting for the
    HTTP proxy takes precedence over the environment variable and the
    command-line option overrides both.  If you have an persistent
    proxy setting that you want to override for a one-time sync, that
It is annoying to have to type in the proxy URL every time you
sync your project, though, so you can make the proxy configuration
persistent using the [/help/setting | setting] command:

    is easily done on the command-line.  For example, to sync with
    a co-workers repository on your LAN, you might type:</p>   
<pre>
<b>fossil setting proxy </b><i>Proxy-URL</i>
</pre>

Or, you can set the "<b>http_proxy</b>" environment variable:
    <blockquote>
    <b>fossil sync http://192.168.1.36:8080/ --proxy off</b>
    </blockquote>

<pre>
<b>export http_proxy=</b><i>Proxy-URL</i>
</pre>

</blockquote><h2>More Hints</h2><blockquote>
To stop using the proxy, do:

<pre>
<b>fossil setting proxy off</b>
    <p>Try these commands:</p>
</pre>

    <blockquote><b>
    fossil help<br>
    fossil test-commands
Or unset the environment variable.  The fossil setting for the
HTTP proxy takes precedence over the environment variable and the
command-line option overrides both.  If you have a persistent
    </b></blockquote>
proxy setting that you want to override for a one-time sync, that
is easily done on the command-line.  For example, to sync with
a co-worker's repository on your LAN, you might type:

<pre>
<b>fossil sync http://192.168.1.36:8080/ --proxy off</b>
    <p>Explore and have fun!</p>
</pre>

<h2 id="links">Other Resources</h2>

</blockquote>
</nowiki>
<ul>
<li> <a href="./gitusers.md">Hints For Users With Prior Git Experience</a>
<li> <a href="./whyusefossil.wiki">Why You Should Use Fossil</a>
<li> <a href="./history.md">The History and Purpose of Fossil</a>
<li> <a href="./branching.wiki">Branching, Forking, and Tagging</a>
<li> <a href="./hints.wiki">Fossil Tips and Usage Hints</a>
<li> <a href="./permutedindex.html">Comprehensive Fossil Doc Index</a>
</ul>
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<title>What People Are Saying</title>

The following are collected quotes from various forums and blogs about
Fossil, Git, and DVCSes in general.  This collection is put together
by the creator of Fossil, so of course there is selection bias...

<h2>On The Usability Of Git</h2>

<ol>
<li>Git approaches the usability of iptables, which is to say, utterly
unusable unless you have the manpage tattooed on you arm.

<p class="local-indent">
<i>by mml at [http://news.ycombinator.com/item?id=1433387]</i>
</p>

<li><nowiki>It's simplest to think of the state of your [git] repository
as a point in a high-dimensional "code-space",  in which branches are
represented as n-dimensional membranes, mapping the spatial loci of
successive commits onto the projected manifold of each cloned
repository.</nowiki>

<p class="local-indent">
<i>by Jonathan Hartley at
[https://www.tartley.com/posts/a-guide-to-git-using-spatial-analogies];
<br>Quoted here: [https://lwn.net/Articles/420152/].</i>
</p>

<li>Git is not a Prius. Git is a Model T.
Its plumbing and wiring sticks out all over the place.
You have to be a mechanic to operate it successfully or you'll be
stuck on the side of the road when it breaks down.
And it <b>will</b> break down.

<p class="local-indent">
<i>Nick Farina at [http://nfarina.com/post/9868516270/git-is-simpler]</i>
</p>

<li>Initial revision of "git", The information manager from hell

<p class="local-indent">
<i>Linus Torvalds - 2005-04-07 22:13:13<br>
Commit comment on the very first source-code check-in for git
</p>

<li>I've been experimenting a lot with git at work.
Damn, it's complicated.
It has things to trip you up with that sane people just wouldn't ever both with
including the ability to allow you to commit stuff in such a way that you can't find
it again afterwards (!!!)
Demented workflow complexity on acid?
<p>* dkf really wishes he could use fossil instead</p>
<p class="local-indent">
<i>by Donal K. Fellow (dkf) on the Tcl/Tk chatroom, 2013-04-09.</i>
</p>

<li>&#91;G&#93;it is <i>designed</i> to forget things.

<p class="local-indent">
<i>[http://www.cs.cmu.edu/~davide/howto/git_lose.html]
</p>

<li>&#91;I&#93;n nearly 31 years of using a computer i have, in total, lost more data to git
(while following the instructions!!!) than any other single piece of software.

<p class="local-indent">
<i>Stephan Beal on the [http://www.mail-archive.com/fossil-users@lists.fossil-scm.org/msg17181.html|Fossil mailing list]
   2014-09-01.</i>
</p>

<li>If programmers _really_ wanted to help scientists, they'd build a version control
system that was more usable than Git.

<p class="local-indent">
<i>Tweet by Greg Wilson @gvwilson on 2015-02-22 17:47</i>
</p>

<li><img src='xkcd-git.gif' align='top'>

<p class="local-indent"><i>Randall Munroe.  [http://xkcd.com/1597/]</i><p>

</ol>

<h2>On The Usability Of Fossil</h2>

<ol>
<li value=11>
Fossil mesmerizes me with simplicity especially after I struggled to
get a bug-tracking system to work with mercurial.

<p class="local-indent">
<i>rawjeev at [https://stackoverflow.com/a/2100469/142454]</i>
</p>

<li>Fossil is the best thing to happen
to my development workflow this year, as I am pretty sure that using
Git has resulted in the premature death of too many of my brain cells.
I'm glad to be able to replace Git in every place that I possibly can
with Fossil.

<p class="local-indent">
<i>Joe Prostko at [http://www.mail-archive.com/fossil-users@lists.fossil-scm.org/msg16716.html]
</p>

<li>This is my favourite VCS. I can carry it on a USB. And it's a complete system, with it's own
server, ticketing system, Wiki pages, and a very, very helpful timeline visualization. And
the entire program in a single file!

<p class="local-indent">
<i>thunderbong commenting on hacker news: [https://news.ycombinator.com/item?id=9131619]</i>
</p>


</ol>


<h2>On Git Versus Fossil</h2>

<ol>
<li value=14>
After prolonged exposure to fossil, i tend to get the jitters when I work with git...

<p class="local-indent">
<i>sriku - at [https://news.ycombinator.com/item?id=16104427]</i>
</p>


<li>
Just want to say thanks for fossil making my life easier....
Also <nowiki>[for]</nowiki> not having a misanthropic command line interface.

<p class="local-indent">
<i>Joshua Paine at [http://www.mail-archive.com/fossil-users@lists.fossil-scm.org/msg02736.html]</i>
</p>

<li>We use it at a large university to manage code that small teams write.
The runs everywhere, ease of installation and portability is something that
seems to be a good fit with the environment we have (highly ditrobuted,
sometimes very restrictive firewalls, OSX/Win/Linux).  We are happy with it
and teaching a Msc/Phd student (read complete novice) fossil has just
been a smoother ride than Git was.

<p class="local-indent">
<i>viablepanic at [https://www.reddit.com/r/programming/comments/bxcto/why_not_fossil_scm/c0p30b4?utm_source=share&utm_medium=web2x&context=3]</i>
</p>

<li>In the fossil community - and hence in fossil itself - development history
is pretty much sacrosanct. The very name "fossil" was to chosen to
reflect the unchanging nature of things in that history.
<br><br>
In git (or rather, the git community), the development history is part of
the published aspect of the project, so it provides tools for rearranging
that history so you can present what you "should" have done rather
than what you actually did.

<p class="local-indent">
<i>Mike Meyer on the Fossil mailing list, 2011-10-04</i>
</p>

<li>github is such a pale shadow of what fossil does.

<p class="local-indent">
<i>dkf on the Tcl chatroom, 2013-12-06</i>
</p>

<li>&#91;With fossil&#93; I actually enjoy keeping track of source files again.

<p class="local-indent">
<a href="https://wholesomedonut.prose.sh/using-fossil-not-git">https://wholesomedonut.prose.sh/using-fossil-not-git</a>
</p>
</ol>
Added www/rebaseharm.md.










































































































































































































































































































































































































































































































































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# Rebase Considered Harmful

Fossil deliberately omits a "rebase" command because the original
designer of Fossil (and [original author][vhist] of this article) considers rebase to be 
an anti-pattern to be avoided. This article attempts to
explain that point of view.

[vhist]: /finfo?name=www/rebaseharm.md&ubg

## 1.0 Rebasing is dangerous

Most people, even strident advocates of rebase, agree that rebase can
cause problems when misused. The Git rebase documentation talks about the
[golden rule of rebasing][golden]: never rebase on a public
branch.  Horror stories of misused rebase abound, and the rebase 
documentation devotes considerable space toward explaining how to
recover from rebase errors and/or misuse.

## <a id="cap-loss"></a>2.0 Rebase provides no new capabilities

Sometimes sharp and dangerous tools are justified,
because they accomplish things that cannot be
done otherwise, or at least cannot be done easily.
Rebase does not fall into that category,
because it provides no new capabilities.

### <a id="orphaning"></a>2.1 A rebase is just a merge with historical references omitted

A rebase is really nothing more than a merge (or a series of merges)
that deliberately forgets one of the parents of each merge step.
To help illustrate this fact,
consider the first rebase example from the 
[Git documentation][gitrebase].  The merge looks like this:

~~~ pikchr toggle center
scale = 0.8
circle "C0" fit
arrow right 50%
circle same "C1"
arrow same
circle same "C2"
arrow same
circle same "C3"
arrow same
circle same "C5"
circle same "C4" at 1cm above C3
arrow from C2 to C4 chop
arrow from C4 to C5 chop
~~~

And the rebase looks like this:

~~~ pikchr toggle center
scale = 0.8
circle "C0" fit
arrow right 50%
circle same "C1"
arrow same
circle same "C2"
arrow same
circle same "C3"
arrow same
circle same "C4'"
circle same "C4" at 1cm above C3
arrow from C2 to C4 chop
~~~

As the [Git documentation][gitrebase] points out, check-ins C4\' and C5
are identical.  The only difference between C4\' and C5 is that C5
records the fact that C4 is its merge parent but C4\' does not.

Thus, a rebase is just a merge that forgets where it came from.

The Git documentation acknowledges this fact (in so many words) and
justifies it by saying "rebasing makes for a cleaner history."  I read
that sentence as a tacit admission that the Git history display 
capabilities are weak and need active assistance from the user to 
keep things manageable.
Surely a better approach is to record
the complete ancestry of every check-in but then fix the tool to show
a "clean" history in those instances where a simplified display is
desirable and edifying, but retain the option to show the real,
complete, messy history for cases where detail and accuracy are more
important.

So, another way of thinking about rebase is that it is a kind of
merge that intentionally forgets some details in order to
not overwhelm the weak history display mechanisms available in Git.
Wouldn't it be better, less error-prone, and easier on users
to enhance the history display mechanisms in Git so that rebasing 
for a clean, linear history became unnecessary?

### <a id="clean-diffs"></a>2.2 Rebase does not actually provide better feature-branch diffs

Another argument, often cited, is that rebasing a feature branch
allows one to see just the changes in the feature branch without
the concurrent changes in the main line of development. 
Consider a hypothetical case:

~~~ pikchr toggle center
scale = 0.8
circle "C0" fit fill white
arrow right 50%
circle same "C1"
arrow same
circle same "C2"
arrow same
circle same "C4"
arrow same
circle same "C6"
circle same "C3" at last arrow.width + C0.rad*2 heading 30 from C2
arrow right 50%
circle same "C5"
arrow from C2 to C3 chop
box ht C3.y-C2.y wid C6.e.x-C0.w.x+1.5*C1.rad at C2 behind C0 fill 0xc6e2ff color 0xaac5df
box ht previous.ht wid previous.wid*0.55 with .se at previous.ne \
   behind C0 fill 0x9accfc color 0xaac5df
text "feature" with .s at previous.n
text "main" with .n at first box.s
~~~

In the above, a feature branch consisting of check-ins C3 and C5 is
run concurrently with the main line in check-ins C4 and C6.  Advocates
for rebase say that you should rebase the feature branch to the tip
of main in order to remove main-line development differences from
the feature branch's history:

~~~ pikchr toggle center
# Duplicated below in section 5.0
scale = 0.8
circle "C0" fit fill white
arrow right 50%
circle same "C1"
arrow same
circle same "C2"
arrow same
circle same "C4"
arrow same
circle same "C6"
circle same "C3" at last arrow.width + C0.rad*2 heading 30 from C2
arrow right 50%
circle same "C5"
arrow from C2 to C3 chop
C3P: circle same "C3'" at first arrow.width + C0.rad*2 heading 30 from C6
arrow right 50% from C3P.e
C5P: circle same "C5'"
arrow from C6 to C3P chop

box ht C3.y-C2.y wid C5P.e.x-C0.w.x+1.5*C1.rad with .w at 0.5*(first arrow.wid) west of C0.w \
   behind C0 fill 0xc6e2ff color 0xaac5df
box ht previous.ht wid previous.e.x - C2.w.x with .se at previous.ne \
   behind C0 fill 0x9accfc color 0xaac5df
~~~


You could choose to collapse C3\' and C5\' into a single check-in
as part of this rebase, but that's a side issue we'll deal with
[separately](#collapsing).

Because Fossil purposefully lacks rebase, the closest you can get to this same check-in
history is the following merge:

~~~ pikchr toggle center
scale = 0.8
circle "C0" fit fill white
arrow right 50%
circle same "C1"
arrow same
circle same "C2"
arrow same
circle same "C4"
arrow same
circle same "C6"
circle same "C3" at last arrow.width + C0.rad*2 heading 30 from C2
arrow right 50%
circle same "C5"
arrow same
circle same "C7"
arrow from C2 to C3 chop
arrow from C6 to C7 chop

box ht C3.y-C2.y wid C7.e.x-C0.w.x+1.5*C1.rad with .w at 0.5*(first arrow.wid) west of C0.w \
   behind C0 fill 0xc6e2ff color 0xaac5df
box ht previous.ht wid previous.e.x - C2.w.x with .se at previous.ne \
   behind C0 fill 0x9accfc color 0xaac5df
~~~


Check-ins C5\' and C7 check-ins hold identical code.  The only
difference is in their history.  

The argument from rebase advocates
is that with merge it is difficult to see only the changes associated
with the feature branch without the commingled mainline changes.
In other words, diff(C2,C7) shows changes from both the feature
branch and from the mainline, whereas in the rebase case
diff(C6,C5\') shows only the feature branch changes.

But that argument is comparing apples to oranges, since the two diffs
do not have the same baseline.  The correct way to see only the feature
branch changes in the merge case is not diff(C2,C7) but rather diff(C6,C7).

<div align=center>

| Rebase        | Merge       | What You See                           |
|---------------|-------------|----------------------------------------|
| diff(C2,C5\') | diff(C2,C7) | Commingled branch and mainline changes |
| diff(C6,C5\') | diff(C6,C7) | Branch changes only                    |

</div>

Remember: C7 and C5\' are bit-for-bit identical, so the output of the
diff is not determined by whether you select C7 or C5\' as the target
of the diff, but rather by your choice of the diff source, C2 or C6.

So, to help with the problem of viewing changes associated with a feature
branch, perhaps what is needed is not rebase but rather better tools to 
help users identify an appropriate baseline for their diffs.

## <a id="siloing"></a>3.0 Rebase encourages siloed development

The [golden rule of rebasing][golden] is that you should never do it
on public branches, so if you are using rebase as intended, that means
you are keeping private branches.  Or, to put it another way, you are
doing siloed development.  You are not sharing your intermediate work
with collaborators.  This is not good for product quality.

[Nagappan, et. al][nagappan] studied bugs in Windows Vista and found
that the best predictor of bugs is the distance on the org-chart between
the stake-holders. The bug rate is inversely related to the
amount of communication among the engineers.
Similar findings arise in other disciplines.  Keeping
private branches does not prove that developers are communicating
insufficiently, but it is a key symptom of that problem.

[Weinberg][weinberg] argues programming should be "egoless."  That
is to say, programmers should avoid linking their code with their sense of
self, as that makes it more difficult for them to find and respond
to bugs, and hence makes them less productive.  Many developers are
drawn to private branches out of sense of ego.  "I want to get the
code right before I publish it."  I sympathize with this sentiment,
and am frequently guilty of it myself.  It is humbling to display
your stupid mistake to the whole world on an Internet that
never forgets.  And yet, humble programmers generate better code.

What is the fastest path to solid code? Is it to continue staring at
your private branch to seek out every last bug, or is it to publish it
as-is, whereupon the many eyeballs will immediately see that last stupid
error in the code? Testing and development are often done by separate
groups within a larger software development organization, because
developers get too close to their own code to see every problem in it.

Given that, is it better for those many eyeballs to find your problems
while they're still isolated on a feature branch, or should that vetting
wait until you finally push a collapsed version of a private working
branch to the parent repo? Will the many eyeballs even see those errors
when they’re intermingled with code implementing some compelling new feature?

## <a id="timestamps"></a>4.0 Rebase causes timestamp confusion

Consider the earlier example of rebasing a feature branch:

~~~ pikchr toggle center
# Copy of second diagram in section 2.2 above
scale = 0.8
circle "C0" fit fill white
arrow right 50%
circle same "C1"
arrow same
circle same "C2"
arrow same
circle same "C4"
arrow same
circle same "C6"
circle same "C3" at last arrow.width + C0.rad*2 heading 30 from C2
arrow right 50%
circle same "C5"
arrow from C2 to C3 chop
C3P: circle same "C3'" at first arrow.width + C0.rad*2 heading 30 from C6
arrow right 50% from C3P.e
C5P: circle same "C5'"
arrow from C6 to C3P chop

box ht C3.y-C2.y wid C5P.e.x-C0.w.x+1.5*C1.rad with .w at 0.5*(first arrow.wid) west of C0.w \
   behind C0 fill 0xc6e2ff color 0xaac5df
box ht previous.ht wid previous.e.x - C2.w.x with .se at previous.ne \
   behind C0 fill 0x9accfc color 0xaac5df
~~~

What timestamps go on the C3\' and C5\' check-ins?  If you choose
the same timestamps as the original C3 and C5, then you have the
odd situation C3' is older than its parent C6.  We call that a
"timewarp" in Fossil.  Timewarps can also happen due to misconfigured
system clocks, so they are not unique to rebase, but they are very
confusing and so best avoided.  The other option is to provide new
unique timestamps for C3' and C5' but then you lose the information
about when those check-ins were originally created, which can make
historical analysis of changes more difficult. It might also
complicate the legal defense of prior art claims.

## <a id="lying"></a>5.0 Rebase misrepresents the project history

By discarding parentage information, rebase attempts to deceive the
reader about how the code actually came together.

Git’s rebase feature is more than just an
alternative to merging: it also provides mechanisms for changing the
project history in order to make editorial changes.  Fossil shows that
you can get similar effects without modifying historical records,
allowing users to:

  1.  Edit check-in comments to fix typos or enhance clarity
  2.  Attach supplemental notes to check-ins or whole branches
  3.  Hide ill-conceived or now-unused branches from routine display
  4.  Fix faulty check-in date/times resulting from misconfigured
      system clocks
  5.  Cross-reference check-ins with each other, or with
      wiki, tickets, forum posts, and/or embedded documentation
 
…and so forth.

Fossil allows all of this not by removing or modifying existing
repository entries, but rather by adding new supplemental records.
Fossil keeps the original incorrect or unclear inputs and makes them
readily accessible, preserving the original historical record. Fossil
doesn’t make the user tell counter-factual “stories,†it only allows the
user to provide annotations to provide a more readable edited
presentation for routine display purposes.

Git needs rebase because it lacks these annotation facilities.  Rather
than consider rebase a desirable feature missing in Fossil, ask instead
why Git lacks support for making editorial changes to check-ins without
modifying history?  Wouldn't it be better to fix the version control
tool rather than requiring users to fabricate a fictitious project
history?

## <a id="collapsing"></a>6.0 Collapsing check-ins throws away valuable information

One of the oft-cited advantages of rebasing in Git is that it lets you
collapse multiple check-ins down to a single check-in to make the
development history “clean.†The intent is that development appear as
though every feature were created in a single step: no multi-step
evolution, no back-tracking, no false starts, no mistakes. This ignores
actual developer psychology: ideas rarely spring forth from fingers to
files in faultless finished form. A wish for collapsed, finalized
check-ins is a wish for a counterfactual situation.

The common counterargument is that collapsed check-ins represent a
better world, the ideal we're striving for. What that argument overlooks
is that we must throw away valuable information to get there.

### <a id="empathy"></a>6.1 Individual check-ins support mutual understanding

Ideally, future developers of our software can understand every feature
in it using only context available in the version of the code they start
work with. Prior to widespread version control, developers had no choice
but to work that way.  Pre-existing codebases could only be understood
as-is or not at all.  Developers in that world had an incentive to
develop software that was easy to understand retrospectively, even if
they were selfish people, because they knew they might end up being
those future developers!

Yet, sometimes we come upon a piece of code that we simply cannot
understand. If you have never asked yourself, "What was this code's
developer thinking?" you haven't been developing software for very long.

When a developer can go back to the individual check-ins leading up to
the current code, they can work out the answers to such questions using
only the level of personal brilliance necessary to be a good developer. To
understand such code using only the finished form, you are asking future
developers to make intuitive leaps that the original developer was
unable to make. In other words, you are asking your future maintenance
developers to be smarter than the original developers!  That's a
beautiful wish, but there's a sharp limit to how far you can carry it.
Eventually you hit the limits of human brilliance.

When the operation of some bit of code is not obvious, both Fossil and
Git let you run a [`blame`](/help?cmd=blame) on the code file to get
information about each line of code, and from that which check-in last
touched a given line of code. If you squash the check-ins on a branch
down to a single check-in, you throw away the information leading up to
that finished form. Fossil not only preserves the check-ins surrounding
the one that included the line of code you're trying to understand, its
[superior data model][sdm] lets you see the surrounding check-ins in
both directions; not only what lead up to it, but what came next. Git
can't do that short of crawling the block-chain backwards from the tip
of the branch to the check-in you’re looking at, an expensive operation.

We believe it is easier to understand a line of code from the 10-line
check-in it was a part of — and then to understand the surrounding
check-ins as necessary — than it is to understand a 500-line check-in
that collapses a whole branch's worth of changes down to a single
finished feature.

[sdm]: ./fossil-v-git.wiki#durable

### <a id="bisecting"></a>6.2 Bisecting works better on small check-ins

Git lets a developer write a feature in ten check-ins but collapse it
down to an eleventh check-in and then deliberately push only that final
collapsed check-in to the parent repo. Someone else may then do a bisect
that blames the merged check-in as the source of the problem they’re
chasing down; they then have to manually work out which of the 10 steps
the original developer took to create it to find the source of the
actual problem.

An equivalent push in Fossil will send all 11 check-ins to the parent
repository so that a later investigator doing the same sort of bisect
sees the complete check-in history. That bisect will point the
investigator at the single original check-in that caused the problem.

### <a id="comments"></a>6.3 Multiple check-ins require multiple check-in comments

The more comments you have from a given developer on a given body of
code, the more concise documentation you have of that developer's
thought process. To resume the bisecting example, a developer trying to
work out what the original developer was thinking with a given change
will have more success given a check-in comment that explains what the
one check-in out of ten blamed by the "bisect" command was trying to
accomplish than if they must work that out from the eleventh check-in's
comment, which only explains the "clean" version of the collapsed
feature.

### <a id="cherrypicking"></a>6.4 Cherry-picks work better with small check-ins

While working on a new feature in one branch, you may come across a bug
in the pre-existing code that you need to fix in order for work on that
feature to proceed. You could choose to switch briefly back to the
parent branch, develop the fix there, check it in, then merge the parent
back up to the feature branch in order to continue work, but that's
distracting. If the fix isn't for a critical bug, fixing it on the
parent branch can wait, so it's better to maintain your mental working
state by fixing the problem in place on the feature branch, then check
the fix in on the feature branch, resume work on the feature, and later
merge that fix down into the parent branch along with the feature.

But now what happens if another branch *also* needs that fix? Let us say
our code repository has a branch for the current stable release, a
development branch for the next major version, and feature branches off
of the development branch. If we rebase each feature branch down into
the development branch as a single check-in, pushing only the rebase
check-in up to the parent repo, only that fix's developer has the
information locally to perform the cherry-pick of the fix onto the
stable branch.

Developers working on new features often do not care about old stable
versions, yet that stable version may have an end user community that
depends on that version, who either cannot wait for the next stable
version or who wish to put off upgrading to it for some time. Such users
want backported bug fixes, yet the developers creating those fixes have
poor incentives to provide those backports.  Thus the existence of
maintenance and support organizations, who end up doing such work.
(There is [a famous company][rh] that built a multi-billion dollar
enterprise on such work.)

This work is far easier when each cherry-pick transfers completely and
cleanly from one branch to another, and we increase the likelihood of
achieving that state by working from the smallest check-ins that remain
complete. If a support organization must manually disentangle a fix from
a feature check-in, they are likely to introduce new bugs on the stable
branch. Even if they manage to do their work without error, it takes
them more time to do the cherry-pick that way.

[rh]: https://en.wikipedia.org/wiki/Red_Hat

### <a id="backouts"></a>6.5 Back-outs also work better with small check-ins

The inverse of the cherry-pick merge is the back-out merge. If you push
only a collapsed version of a private working branch up to the parent
repo, those working from that parent repo cannot automatically back out
any of the individual check-ins that went into that private branch.
Others must either manually disentangle the problematic part of your
merge check-in or back out the entire feature.

## <a id="better-plan"></a>7.0 Cherry-pick merges work better than rebase

Perhaps there are some cases where a rebase-like transformation
is actually helpful, but those cases are rare, and when they do
come up, running a series of cherry-pick merges achieves the same
topology with several advantages:

  1.  In Fossil, cherry-pick merges preserve an honest and clear record
      of history.  Fossil remembers where a cherry-pick came from, and
      it shows this in its timeline, so other developers can understand
      how a cherry-pick based commit came together.

      Git lacks the ability to remember the source of a cherry-pick as
      part of the commit. This fact has no direct bearing on this
      document’s thesis, but we can make a few observations. First, Git
      forgets history in more cases than in rebasing. Second, if Git
      remembered the source of cherry-picks in commits, Git users might
      have a better argument for avoiding rebase, because they’d have an
      alternative that *didn’t* lose history.

  2.  Fossil’s [test before commit philosophy][tbc] means you can test a
      cherry-pick before committing it. Because Fossil allows multiple
      cherry-picks in a single commit and it remembers them all, you can
      do this for a complicated merge in step-wise fashion.

      Git commits cherry-picks straight to the repository, so that if it
      results in a bad state, you have to do something drastic like
      `git reset --hard` to repair the damage.

  3.  Cherry-picks keep both the original and the revised check-ins,
      so both timestamps are preserved.

[tbc]: ./fossil-v-git.wiki#testing

## <a id="conclusion"></a>8.0 Summary and conclusion

Rebasing is an anti-pattern.  It is dishonest.  It deliberately
omits historical information.  It causes problems for collaboration.
And it has no offsetting benefits.

For these reasons, rebase is intentionally and deliberately omitted
from the design of Fossil.


[golden]: https://www.atlassian.com/git/tutorials/merging-vs-rebasing#the-golden-rule-of-rebasing
[gitrebase]: https://git-scm.com/book/en/v2/Git-Branching-Rebasing
[nagappan]: https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/tr-2008-11.pdf
[weinberg]: https://books.google.com/books?id=76dIAAAAMAAJ
Deleted www/reference.wiki.
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  <h2>Command Line Interface Reference</h2>

  This is an easy introduction to the fossil command line interface
  (cli).  It assumes some familiarity with using the command line, and
  with Source Code Maintenence (SCM) systems&#8212;but not <i>too</i>
  much.

  If you are trying to find information about fossil's web
  capabilities, see the <a href="index.wiki">Fossil Home</a> and
  <a href="wikitheory.wiki">Fossil Wiki</a> pages for pointers.

  <h3>Things to note</h3>
  * Fossil cli commands do not use special delimeters, they use
  spaces.  This is traditional with VCS/SCM.  Some <i>options</i> to
  fossil commands <i>do</i> use special delimiters, particularly the
  '-' (hyphen, or dash) character.  This is very similar to Tcl.
  Think of fossil as a shell you invoke and feed a command to,
  including any options, and it will make more sense.

  * Any fossil command is acceptable once enough of it has been
  entered to make the intent unambiguous.  'clo' is a proper prefix of
  both the 'clone' and 'close' commands, for instance, but 'clon' is
  enough to make the intent&#8212;the 'clone'
  command&#8212;unambiguous.

  * Pragmatically, a [./concepts.wiki#keyconc | <u>version</u>]
  in <b>fossil</b> is a 40-character long string of hexadecimal.
  <b>fossil</b> will be able to figure out which version you want
  with any <i>distinct</i> prefix of that string which is at
  least four characters long.  <em>Commands which require a
  version are looking for the string, a distinct prefix of the
  string, or a <code>tag</code>.</em>

  * SCM in a distributed environment can be a bit confusing with
  regard to branching, merging, and versions in general.  See the
  [./branching.wiki | explanation of branching] and it will all make
  much more sense.

  * <i>Op.Ed.</i> An excellent way to learn to use <b>fossil</b>
    effectively is to
    [./quickstart.wiki#fslclone | clone the repository for fossil]
    itself.  You can then poke around using the <code>fossil ui</code>
    command, and look things up with no connection worries.  You can
    set up test repositories and try things out on-the-fly to see how
    they work, using their own ui's.  The CLI will far easier to
    understand if you can run a repository, watch it in a browser, and
    hack around with it in a simplified environment (your tests) with
    guaranteed and fast access to the sources & docs (your cloned fossil
    repository).
<br /><br /> <br />
  <b>You should</b> probably start interacting with fossil at the command
  line by asking it what it can
  do:&nbsp;&nbsp;&nbsp;&nbsp;<a name="tof">&#710;</a>

  <code>$ fossil help</code><nowiki><pre>
Usage: fossil help COMMAND.
Available COMMANDs:</pre><table width="80%"
                          style="font-family: fixed, courier, monospace;">
  <tr>
    <td><a href="#add">add</a>*</td>
    <td><a href="#checkout">co</a>*</td>
    <td><a href="#http">http</a></td>
    <td><a href="#rebuild">rebuild</a></td>
    <td><a href="#sync">sync</a>*</td>
  </tr>
  <tr>
    <td><a href="#all">all</a>*</td>
    <td><a href="#commit">commit</a></td>
    <td><a href="#info">info</a></td>
    <td><a href="#reconstruct">reconstruct</a></td>
    <td><a href="#tag">tag</a></td>
  </tr>
  <tr>
    <td><a href="#branch">branch</a></td>
    <td><a href="#configuration">configuration</a></td>
    <td><a href="#leaves">leaves</a></td>
    <td><a href="#redo">redo</a></td>
    <td><a href="#timeline">timeline</a></td>
  </tr>
  <tr>
    <td><a href="#cgi">cgi</a>*</td>
    <td><a href="#deconstruct">deconstruct</a></td>
    <td><a href="#ls">ls</a>*</td>
    <td><a href="#mv">rename</a>*</td>
    <td><a href="#server">ui</a></td>
  </tr>
  <tr>
    <td><a href="#changes">changes</a>*</td>
    <td><a href="#rm">del</a>*</td>
    <td><a href="#merge">merge</a></td>
    <td><a href="#revert">revert</a></td>
    <td><a href="#undo">undo</a></td>
  </tr>
  <tr>
    <td><a href="#checkout">checkout</a>*</td>
    <td><a href="#descendants">descendants</a></td>
    <td><a href="#mv">mv</a>*</td>
    <td><a href="#rm">rm</a>*</td>
    <td><a href="#setting">unset</a></td>
  </tr>
  <tr>
    <td><a href="#commit">ci</a></td>
    <td><a href="#diff">diff</a></td>
    <td><a href="#new">new</a>*</td>
    <td><a href="#rstats">rstats</a></td>
    <td><a href="#update">update</a>*</td>
  </tr>
  <tr>
    <td><a href="#clean">clean</a></td>
    <td><a href="#extra">extra</a>*</td>
    <td><a href="#open">open</a></td>
    <td><a href="#server">server</a></td>
    <td><a href="#user">user</a></td>
  </tr>
  <tr>
    <td><a href="#clone">clone</a></td>
    <td><a href="#diff">gdiff</a></td>
    <td><a href="#pull">pull</a></td>
    <td><a href="#setting">settings</a></td>
    <td><a href="#version">version</a>*</td>
  </tr>
  <tr>
    <td><a href="#close">close</a></td>
    <td><a href="#help">help</a></td>
    <td><a href="#push">push</a></td>
    <td><a href="#status">status</a>*</td>
    <td><a href="#wiki">wiki</a></td>
  </tr>
</table><nowiki><pre>
This is fossil version [a89b436bc9] 2009-02-11 05:00:02 UTC
</pre>
<b>What follows</b> is a survey of what you get if you type<code>
fossil&nbsp;help&nbsp;<i>command</i> </code>for all of the
commands listed above.  There are links to individual pages for each
of them; pages with content (commands marked with a '*' are done) go
into the reason for a command in a bit more depth than the program help.
<pre>
<hr><a href="#tof">&#710;</a>
    <a name="add">Usage: </a><code><a href="cmd_add.wiki">fossil add</a></code> FILE...
    Make arrangements to add one or more files to the current checkout
    at the next commit.

<hr><a href="#tof">&#710;</a>
    <a name="all">Usage: </a><code><a href="cmd_all.wiki">fossil all</a></code> (list|pull|push|rebuild|sync)
    The ~/.fossil file records the location of all repositories for a
    user.  This command performs certain operations on all repositories
    that can be useful before or after a period of disconnection operation.
    Available operations are:

    list       Display the location of all repositories

    pull       Run a "pull" operation on all repositories

    push       Run a "push" on all repositories

    rebuild    Rebuild on all repositories

    sync       Run a "sync" on all repositories

    Respositories are automatically added to the set of known repositories
    when one of the following commands against the repository: clone, info,
    pull, push, or sync

<hr><a href="#tof">&#710;</a>
    <a name="branch">Usage: </a><code><a href="cmd_branch.wiki">fossil branch</a></code> SUBCOMMAND ... ?-R|--repository FILE?

Run various subcommands on the branches of the open repository or
of the repository identified by the -R or --repository option.

   fossil branch new BRANCH-NAME BASIS ?-bgcolor COLOR?

       Create a new branch BRANCH-NAME off of check-in BASIS.
       You can optionally give the branch a default color.

   fossil branch list

       List all branches

<hr><a href="#tof">&#710;</a>
    <a name="cgi">Usage: </a><a href="cmd_cgi.wiki">fossil cgi</a> SCRIPT
    The SCRIPT argument is the name of a file that is the CGI script
    that is being run.  The command name, "cgi", may be omitted if
    the GATEWAY_INTERFACE environment variable is set to "CGI" (which
    should always be the case for CGI scripts run by a webserver.)  The
    SCRIPT file should look something like this:

    #!/usr/bin/fossil
    repository: /home/somebody/project.db

    The second line defines the name of the repository.  After locating
    the repository, fossil will generate a webpage on stdout based on
    the values of standard CGI environment variables.

<hr><a href="#tof">&#710;</a>
    <a name="changes">Usage: </a><a href="cmd_changes.wiki">fossil changes</a>
    Report on the edit status of all files in the current checkout.
    See also the "status" and "extra" commands.

<hr><a href="#tof">&#710;</a>
    <a name="checkout">Usage: </a><a href="cmd_checkout.wiki">fossil checkout</a> VERSION ?-f|--force?
    Check out a version specified on the command-line.  This command
    will not overwrite edited files in the current checkout unless
    the --force option appears on the command-line.

    See also the "update" command.

<hr><a href="#tof">&#710;</a>
    <a name="commit">Usage: </a><a href="cmd_commit.wiki">fossil commit</a> ?-m COMMENT? ?--nosign? ?FILE...?    fossil ci  ...  (as above)

    Create a new version containing all of the changes in the current
    checkout.  You will be prompted to enter a check-in comment unless
    the "-m" option is used to specify a comment line.  You will be
    prompted for your GPG passphrase in order to sign the new manifest
    unless the "--nosign" options is used.  All files that have
    changed will be committed unless some subset of files is specified
    on the command line.

<hr><a href="#tof">&#710;</a>
    <a name="clean">Usage: </a><a href="cmd_clean.wiki">fossil clean</a> ?-all?
    Delete all "extra" files in the source tree.  "Extra" files are
    files that are not officially part of the checkout.  See also
    the "extra" command. This operation cannot be undone.

    You will be prompted before removing each file. If you are
    sure you wish to remove all "extra" files you can specify the
    optional -all flag.

<hr><a href="#tof">&#710;</a>
    <a name="clone">Usage: </a><a href="cmd_clone.wiki">fossil clone</a> URL FILENAME
    Make a clone of a repository specified by URL in the local
    file named FILENAME.

<hr><a href="#tof">&#710;</a>
    <a name="close">Usage: </a><a href="cmd_close.wiki">fossil close</a> ?-f|--force?
    The opposite of "open".  Close the current database connection.
    Require a -f or --force flag if there are unsaved changed in the
    current check-out.

<hr><a href="#tof">&#710;</a>
    <a name="configuration">Usage: </a><a href="cmd_configure.wiki">fossil configuration</a> METHOD ...
    Where METHOD is one of: export import merge pull push reset.  All methods
    accept the -R or --repository option to specific a repository.

    fossil configuration export AREA FILENAME

    Write to FILENAME exported configuraton information for AREA.
    AREA can be one of:  all ticket skin project

    fossil configuration import FILENAME

    Read a configuration from FILENAME, overwriting the current
    configuration.

    fossil configuration merge FILENAME

    Read a configuration from FILENAME and merge its values into
    the current configuration.  Existing values take priority over
    values read from FILENAME.

    fossil configuration pull AREA ?URL?

    Pull and install the configuration from a different server
    identified by URL.  If no URL is specified, then the default
    server is used.
    fossil configuration push AREA ?URL?

    Push the local configuration into the remote server identified
    by URL.  Admin privilege is required on the remote server for
    this to work.

    fossil configuration reset AREA

    Restore the configuration to the default.  AREA as above.

    WARNING: Do not import, merge, or pull configurations from an untrusted
    source.  The inbound configuration is not checked for safety and can
    introduce security vulnerabilities.

<hr><a href="#tof">&#710;</a>
    COMMAND: deconstruct
    <a name="deconstruct">Usage: </a><a href="cmd_deconstruct.wiki">fossil deconstruct</a> ?-R|--repository REPOSITORY? DESTINATION
    Populates the indicated DESTINATION directory with copies of all
    artifcats contained within the repository.  Artifacts are named AA/bbbbb
    where AA is the first 2 characters of the artifact ID and bbbbb is the
    remaining 38 characters.

<hr><a href="#tof">&#710;</a>
    <a name="rm">Usage: </a><a href="cmd_rm.wiki">fossil rm</a> FILE...    or: fossil del FILE...
    Remove one or more files from the tree.

<hr><a href="#tof">&#710;</a>
    <a name="descendants">Usage: </a><a href="cmd_descendants.wiki">fossil descendants</a> ?CHECKIN-ID?
    Find all leaf descendants of the check-in specified or if the argument
    is omitted, of the check-in currently checked out.

<hr><a href="#tof">&#710;</a>
    <a name="diff">Usage: </a><a href="cmd_diff.wiki">fossil diff</a>|gdiff ?-i? ?-r REVISION? FILE...
    Show the difference between the current version of a file (as it
    exists on disk) and that same file as it was checked out.

    diff will show a textual diff while gdiff will attempt to run a
    graphical diff command that you have setup. If the choosen command
    is not yet configured, the internal textual diff command will be
    used.

    If -i is supplied for either diff or gdiff, the internal textual
    diff command will be executed.

    Here are a few external diff command settings, for example:

    fossil setting diff-command diff

    fossil setting gdiff-command tkdiff
    fossil setting gdiff-command eskill22
    fossil setting gdiff-command tortoisemerge
    fossil setting gdiff-command meld
    fossil setting gdiff-command xxdiff
    fossil setting gdiff-command kdiff3

<hr><a href="#tof">&#710;</a>
    <a name="extra">Usage: </a><a href="cmd_extra.wiki">fossil extra</a>
    Print a list of all files in the source tree that are not part of
    the current checkout.  See also the "clean" command.

<hr><a href="#tof">&#710;</a>
    <a name="help">Usage: </a><a href="cmd_help.wiki">fossil help</a> COMMAND
    Display information on how to use COMMAND

<hr><a href="#tof">&#710;</a>
    <a name="http">Usage: </a><a href="cmd_http.wiki">fossil http</a> REPOSITORY
    Handle a single HTTP request appearing on stdin.  The resulting webpage
    is delivered on stdout.  This method is used to launch an HTTP request
    handler from inetd, for example.  The argument is the name of the    repository.

<hr><a href="#tof">&#710;</a>
    <a name="info">Usage: </a><a href="cmd_info.wiki">fossil info</a> ?ARTIFACT-ID|FILENAME?
    With no arguments, provide information about the current tree.
    If an argument is specified, provide information about the object
    in the respository of the current tree that the argument refers
    to.  Or if the argument is the name of a repository, show
    information about that repository.

<hr><a href="#tof">&#710;</a>
    <a name="leaves">Usage: </a><a href="cmd_leaves.wiki">fossil leaves</a>
    Find leaves of all branches.

<hr><a href="#tof">&#710;</a>
    <a name="ls">Usage: </a><a href="cmd_ls.wiki">fossil ls</a>
    Show the names of all files in the current checkout

<hr><a href="#tof">&#710;</a>
    <a name="merge">Usage: </a><a href="cmd_merge.wiki">fossil merge</a> VERSION
    The argument is a version that should be merged into the current
    checkout.
    Only file content is merged.  The result continues to use the
    file and directory names from the current check-out even if those
    names might have been changed in the branch being merged in.

<hr><a href="#tof">&#710;</a>
    <a name="mv">Usage: </a><a href="cmd_mv.wiki">fossil mv|rename</a> OLDNAME NEWNAME       or: fossil mv|rename OLDNAME... DIR

    Move or rename one or more files within the tree

    This command does not rename the files on disk.  All this command does is
    record the fact that filenames have changed so that appropriate notations
    can be made at the next commit/checkin.

<hr><a href="#tof">&#710;</a>
    <a name="new">Usage: </a><a href="cmd_new.wiki">fossil new</a> FILENAME

    Create a repository for a new project in the file named FILENAME.
    This command is distinct from "clone".  The "clone" command makes
    a copy of an existing project.  This command starts a new project.

<hr><a href="#tof">&#710;</a>
    <a name="open">Usage: </a><a href="cmd_open.wiki">fossil open</a> FILENAME
    Open a connection to the local repository in FILENAME.  A checkout
    for the repository is created with its root at the working directory.
    See also the "close" command.

<hr><a href="#tof">&#710;</a>
    <a name="rstats">Usage: </a><a href="cmd_rstats.wiki">fossil rstats</a>

    Deliver a report of the repository statistics for the
    current checkout.

<hr><a href="#tof">&#710;</a>
    <a name="pull">Usage: </a><a href="cmd_pull.wiki">fossil pull</a> ?URL? ?-R|--respository REPOSITORY?
    Pull changes in a remote repository into the local repository.
    The repository is identified by the -R or --repository option.
    If there is no such option then the open repository is used.
    The URL of the remote server is specified on the command line
    If no URL is specified then the URL used by the most recent
    "pull", "push", or "sync" command is used.

    The URL is of the following form:

    http://USER@HOST:PORT/PATH

    The "USER@" and ":PORT" substrings are optional.
    The "USER" substring specifies the login user.  You will be
    prompted for the password on the command-line.  The PORT
    specifies the TCP port of the server.  The default port is
    80.

<hr><a href="#tof">&#710;</a>
    <a name="push">Usage: </a><a href="cmd_push.wiki">fossil push</a> ?URL? ?-R|--repository REPOSITORY?
    Push changes in the local repository over into a remote repository.
    See the "pull" command for additional information.

<hr><a href="#tof">&#710;</a>
    <a name="rebuild">Usage: </a><a href="cmd_rebuild.wiki">fossil rebuild</a> REPOSITORY
    Reconstruct the named repository database from the core
    records.  Run this command after updating the fossil
    executable in a way that changes the database schema.

<hr><a href="#tof">&#710;</a>
    COMMAND: reconstruct
    <a name="reconstruct">Usage: </a><a href="cmd_reconstruct.wiki">fossil reconstruct</a> REPOSITORY ORIGIN
    Creates the REPOSITORY and populates it with the artifacts in the
    indicated ORIGIN directory.

<hr><a href="#tof">&#710;</a>
    <a name="redo">Usage: </a><a href="cmd_redo.wiki">fossil redo</a> ?FILENAME...?
    Redo the an update or merge operation that has been undone by the
    undo command.  If FILENAME is specified then restore the changes
    associated with the named file(s) but otherwise leave the update
    or merge undone.

    A single level of undo/redo is supported.  The undo/redo stack
    is cleared by the commit and checkout commands.

<hr><a href="#tof">&#710;</a>
    <a name="revert">Usage: </a><a href="cmd_revert.wiki">fossil revert</a> ?--yes? ?-r CHECKIN? FILE
    Revert to the current repository version of FILE, or to
    the version associated with check-in CHECKIN if the -r flag
    appears.  This command will confirm your operation unless the
    file is missing or the --yes option is used.

<hr><a href="#tof">&#710;</a>
    <a name="server">Usage: </a><a href="cmd_server.wiki">fossil server</a> ?-P|--port TCPPORT? ?REPOSITORY?    Or: fossil ui ?-P|--port TCPPORT? ?REPOSITORY?

    Open a socket and begin listening and responding to HTTP requests on
    TCP port 8080, or on any other TCP port defined by the -P or
    --port option.  The optional argument is the name of the repository.
    The repository argument may be omitted if the working directory is
    within an open checkout.

    The "ui" command automatically starts a web browser after initializing
    the web server.

<hr><a href="#tof">&#710;</a>
    COMMAND: settings
    COMMAND: unset
    <a name="setting">Usage: </a><a href="cmd_setting.wiki">fossil setting</a> ?PROPERTY? ?VALUE? ?-global?
    fossil unset PROPERTY ?-global?

    The "setting" command with no arguments lists all properties and their
    values.  With just a property name it shows the value of that property.
    With a value argument it changes the property for the current repository.

    The "unset" command clears a property setting.

       autosync         If enabled, automatically pull prior to
		        commit or update and automatically push
		        after commit or tag or branch creation.

       diff-command     External command to run when performing a diff.
		        If undefined, the internal text diff will be used.

       editor           Text editor command used for check-in comments.

       http-port        The TCP/IP port number to use by the "server"
		        and "ui" commands.  Default: 8080

       gdiff-command    External command to run when performing a graphical
		        diff. If undefined, text diff will be used.

       localauth        If enabled, require that HTTP connections from
		        127.0.0.1 be authenticated by password.  If
		        false, all HTTP requests from localhost have
		        unrestricted access to the repository.

       clearsign        When enabled (the default), fossil will attempt to
		        sign all commits with gpg.  When disabled, commits will
		        be unsigned.

       pgp-command      Command used to clear-sign manifests at check-in.
		        The default is "gpg --clearsign -o ".

       mtime-changes    Use file modification times (mtimes) to detect when
		        files have been modified.

       proxy            URL of the HTTP proxy.  If undefined or "on" then
		        the "http_proxy" environment variable is consulted.
		        If the http_proxy environment variable is undefined
		        then a direct HTTP connection is used.

       web-browser      A shell command used to launch your preferred
		        web browser when given a URL as an argument.
		        Defaults to "start" on windows, "open" on Mac,
		        and "firefox" on Unix.

<hr><a href="#tof">&#710;</a>
    <a name="status">Usage: </a><a href="cmd_status.wiki">fossil status</a>
    Report on the status of the current checkout.

<hr><a href="#tof">&#710;</a>
    <a name="sync">Usage: </a><a href="cmd_sync.wiki">fossil sync</a> ?URL? ?-R|--repository REPOSITORY?
    Synchronize the local repository with a remote repository.  This is
    the equivalent of running both "push" and "pull" at the same time.
    See the "pull" command for additional information.

<hr><a href="#tof">&#710;</a>
    <a name="tag">Usage: </a><a href="cmd_tag.wiki">fossil tag</a> SUBCOMMAND ...
    Run various subcommands to control tags and properties

    fossil tag add ?--raw? TAGNAME CHECK-IN ?VALUE?

    Add a new tag or property to CHECK-IN. The tag will
    be usable instead of a CHECK-IN in commands such as
    update and merge.

    fossil tag branch ?--raw? ?--nofork? TAGNAME CHECK-IN ?VALUE?

    A fork will be created so that the new checkin
    is a sibling of CHECK-IN and identical to it except
    for a generated comment. Then the new tag will
    be added to the new checkin and propagated to
    all direct children.  Additionally all symbolic
    tags of that checkin inherited from CHECK-IN will
    be cancelled.

    However, if the option --nofork is given, no
    fork will be created and the tag/property will be
    added to CHECK-IN directly. No tags will be canceled.

    fossil tag cancel ?--raw? TAGNAME CHECK-IN

    Remove the tag TAGNAME from CHECK-IN, and also remove
    the propagation of the tag to any descendants.

    fossil tag find ?--raw? TAGNAME

    List all check-ins that use TAGNAME

    fossil tag list ?--raw? ?CHECK-IN?

    List all tags, or if CHECK-IN is supplied, list
    all tags and their values for CHECK-IN.

    The option --raw allows the manipulation of all types of
    tags used for various internal purposes in fossil. You
    should not use this option to make changes unless you are
    sure what you are doing.

    If you need to use a tagname that might be confused with
    a hexadecimal check-in or artifact ID, you can explicitly
    disambiguate it by prefixing it with "tag:". For instance:

    fossil update decaf

    will be taken as an artifact or check-in ID and fossil will
    probably complain that no such revision was found. However

    fossil update tag:decaf

    will assume that "decaf" is a tag/branch name.

<hr><a href="#tof">&#710;</a>
    <a name="timeline">Usage: </a><a href="cmd_timeline.wiki">fossil timeline</a> ?WHEN? ?CHECK-IN|DATETIME? ?-n|--count N?
    Print a summary of activity going backwards in date and time
    specified or from the current date and time if no arguments
    are given.  Show as many as N (default 20) check-ins.  The
    WHEN argument can be any unique abbreviation of one of these
    keywords:

    before
    after
    descendants | children
    ancestors | parents

    The CHECK-IN can be any unique prefix of 4 characters or more.
    The DATETIME should be in the ISO8601 format.  For
    examples: "2007-08-18 07:21:21".  You can also say "current"
    for the current version or "now" for the current time.

<hr><a href="#tof">&#710;</a>
    <a name="undo">Usage: </a><a href="cmd_undo.wiki">fossil undo</a> ?FILENAME...?
    Undo the most recent update or merge operation.  If FILENAME is
    specified then restore the content of the named file(s) but otherwise
    leave the update or merge in effect.

    A single level of undo/redo is supported.  The undo/redo stack
    is cleared by the commit and checkout commands.

<hr><a href="#tof">&#710;</a>
    <a name="update">Usage: </a><a href="cmd_update.wiki">fossil update</a> ?VERSION? ?--latest?
    The optional argument is a version that should become the current
    version.  If the argument is omitted, then use the leaf of the
    tree that begins with the current version, if there is only a    single leaf.  If there are a multiple leaves, the latest is used
    if the --latest flag is present.

    This command is different from the "checkout" in that edits are
    not overwritten.  Edits are merged into the new version.

<hr><a href="#tof">&#710;</a>
    <a name="user">Usage: </a><a href="cmd_user.wiki">fossil user</a> SUBCOMMAND ...  ?-R|--repository FILE?
    Run various subcommands on users of the open repository or of
    the repository identified by the -R or --repository option.

    fossil user capabilities USERNAME ?STRING?

    Query or set the capabilities for user USERNAME

    fossil user default ?USERNAME?

    Query or set the default user.  The default user is the
    user for command-line interaction.

    fossil user list

    List all users known to the repository

    fossil user new ?USERNAME?

    Create a new user in the repository.  Users can never be
    deleted.  They can be denied all access but they must continue
    to exist in the database.

    fossil user password USERNAME

    Change the web access password for a user.

<hr><a href="#tof">&#710;</a>
    <a name="version">Usage: </a><a href="cmd_version.wiki">fossil version</a>
    Print the source code version number for the fossil executable.

<hr><a href="#tof">&#710;</a>
    <a name="wiki">Usage: </a><a href="cmd_wiki.wiki">fossil wiki</a> (export|create|commit|list) WikiName
    Run various subcommands to fetch wiki entries.

    fossil wiki export PAGENAME ?FILE?

    Sends the latest version of the PAGENAME wiki
    entry to the given file or standard output.

    fossil wiki commit PAGENAME ?FILE?

    Commit changes to a wiki page from FILE or from standard.

    fossil wiki create PAGENAME ?FILE?

    Create a new wiki page with initial content taken from
    FILE or from standard input.

    fossil wiki list

    Lists all wiki entries, one per line, ordered
    case-insentively by name.

    TODOs:

    fossil wiki export ?-u ARTIFACT? WikiName ?FILE?

    Outputs the selected version of WikiName.

    fossil wiki delete ?-m MESSAGE? WikiName

    The same as deleting a file entry, but i don't know if fossil
    supports a commit message for Wiki entries.

    fossil wiki ?-u? ?-d? ?-s=[|]? list

    Lists the artifact ID and/or Date of last change along with
    each entry name, delimited by the -s char.

    fossil wiki diff ?ARTIFACT? ?-f infile[=stdin]? EntryName

    Diffs the local copy of a page with a given version (defaulting
    to the head version).

  </pre></nowiki>

  <hr><a href="#tof">&#710;</a>

    <h3>Caveats</h3>
    This is not actually a reference, it's the start of a reference.
    There are wikilinks to uncreated pages for the commands.  This was
    created by running the fossil help for each command listed by running
    fossil help...  Duplicate commands are only listed once (I
    <i>think</i>).  There are several bits of <b>fossil</b> that are not addressed
    in the help for commands (special wiki directories, special users, etc.)
    so they are (currently) not addressed here.  Clarity and brevity may be
    sacrificed for expediency at the authors indiscretion.  All spelling and
    grammatical mistakes are somebody elses fault.<code>  void * </code>
    prohibited where<code> __C_PLUS_PLUS__ </code>. Title and taxes extra.
    Not valid in Hooptigonia.
Added www/relatedwork.md.





























































































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# Related Work

## Support Projects

* [SQLite]: C-language library that implements a small, fast,
  self-contained, high-reliability, full-featured, SQL database engine
* [pikchr]: PIC-like markup language for diagrams in technical
  documentation
* [althttpd]: simple, secure, and low resource usage webserver
  that has run the https://sqlite.org/ website since 2004
* [Lemon Parser Generator][lemon]: re-entrant and thread-safe
  LALR(1) parser with a less error-prone grammar syntax than YACC or BISON
* [Makeheaders]: automatically generate header files for C/C++ projects

## Fossil Inspired Projects

* [libfossil]: 3rd party Fossil SCM Library API
* [fnc]: interactive text-based user interface for Fossil
* [ChiselApp]: Free Fossil SCM hosting!
* [Inskinerator]: The Fossil Skin Generator
* [Fuel]: cross-platform GUI front-end for the excellent Fossil SCM
* [fsl]: Tcl/Expect wrapper script extending Fossil functionality


## Editor Plugins

* [Emacs-Fossil][emacsfsl]: GNU Emacs VC backend for the Fossil version
  control system
* [VS Code][vscode]: Integrated Fossil source control in Visual Studio Code
* [Qt Creator Plugin][qtfsl]: Fossil SCM plugin for the Qt Creator IDE
* [Jetbrains IDE Plugin][jetbrains]: Fossil SCM plugin for [CLion], [IntelliJ],
  [GoLand], and more
* [NetBeans Plugin][netbeans]: NetBeans plugin module to use Fossil SCM

## Version Control/Software Configuration Management

* [Git]: Free and open source distributed version control system
* [Subversion]: Apache's open source version control system
* [Mercurial]: free, distributed source control management tool
* [Game of Trees][got]: version control which prioritizes ease of use and
  simplicity over flexibility
* [Darcs]: free and open source, cross-platform version control system
* [Pijul]: patch-based distributed version control system
* [Sapling]: A Scalable, User-Friendly Source Control System

## Podcasts

* [Corecursive #066][corec66]: The Untold Story of SQLite
* [The Changelog #454][changelog454]: Richard Hipp returns
* [The Changelog #201][changelog201]: Why SQLite succeeded as a database
* [bsdtalk194][bsdtalk]: Interview with D. Richard Hipp
* [Two Weeks of Databases][db2w]: Richard Hipp interviewed by Federico Razzoli
* [Software Engineering Daily][swed]: SQLite with D. Richard Hipp
* [Floss Weekly 26][floss26]: Interview with D. Richard Hipp, creator of SQLite

## Miscellany

* [Tcl]: a simple-to-learn yet very powerful programming language

[althttpd]:      https://sqlite.org/althttpd/doc/trunk/althttpd.md
[bsdtalk]:       https://bsdtalk.blogspot.com/2010/07/bsdtalk194-fossil-scm-with-d-richard.html
[changelog201]:  https://changelog.com/podcast/201
[changelog454]:  https://changelog.com/podcast/454
[ChiselApp]:     https://chiselapp.com/
[CLion]:         https://www.jetbrains.com/clion/
[corec66]:       https://corecursive.com/066-sqlite-with-richard-hipp/
[Darcs]:         http://darcs.net/
[db2w]:          https://youtu.be/2eaQzahCeh4
[emacsfsl]:      https://chiselapp.com/user/venks/repository/emacs-fossil/doc/tip/README.md
[floss26]:       https://twit.tv/shows/floss-weekly/episodes/26
[fnc]:           https://fnc.bsdbox.org
[fsl]:           http://fossil.0branch.com/fsl
[Fuel]:          https://fuel-scm.org/fossil/index
[Git]:           https://git-scm.com
[GoLand]:        https://www.jetbrains.com/go/
[got]:           https://gameoftrees.org
[Inskinerator]:  https://tangentsoft.com/inskinerator
[IntelliJ]:      https://www.jetbrains.com/idea/
[jetbrains]:     https://plugins.jetbrains.com/plugin/7479-fossil-integration
[lemon]:         https://www.hwaci.com/sw/lemon/
[libfossil]:     https://fossil.wanderinghorse.net/r/libfossil/wiki/home
[Makeheaders]:   https://fossil-scm.org/home/doc/trunk/tools/makeheaders.html
[Mercurial]:     https://www.mercurial-scm.org/
[netbeans]:      https://chiselapp.com/user/backendzeit/repository/netbeans-fossil-plugin/index
[Pijul]:         https://pijul.org
[pikchr]:        https://pikchr.org
[qtfsl]:         https://code.qt.io/cgit/qt-creator/plugin-fossil-scm.git/
[Sapling]:       https://sapling-scm.com
[SQLite]:        https://sqlite.org/index.html
[Subversion]:    https://subversion.apache.org/
[swed]:          https://softwareengineeringdaily.com/2015/11/13/sqlite-with-d-richard-hipp/
[Tcl]:           https://core.tcl-lang.org/tcl/wiki?name=Index
[VSCode]:        https://marketplace.visualstudio.com/items?itemName=koog1000.fossil
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<title>Reviews</title>
<b>External links:</b>
<h2 align="center">What People Are Saying About Fossil</h2>

  *  [https://www.nixtu.info/2010/03/fossil-dvcs-on-go-first-impressions.html |
     Fossil DVCS on the Go - First Impressions]

<b>See Also:</b>

  *  [./quotes.wiki | Short Quotes on Fossil, Git, And DVCSes]

<b>Daniel writes on 2009-01-06:</b>

<blockquote>
<div class="indent">
The reasons I use fossil are that it's the only version control I
have found that I can get working through the VERY annoying MS
firewalls at work.. (albeit through an ntlm proxy) and I just love
single .exe applications!
</div>
</blockquote>


<b>Joshua Paine on 2010-10-22:</b>

<div class="indent">
With one of my several hats on, I'm in a small team using git. Another
team member just checked some stuff into trunk that should have been on
a branch. Nothing else had happened since, so in fossil I would have
just edited that commit and put it on a new branch. In git that can't
actually be done without danger once other people have pulled, so I had
to create a new commit rolling back the changes, then branch and cherry
pick the earlier changes, then figure out how to make my new branch
shared instead of private. Just want to say thanks for fossil making my
life easier on most of my projects, and being able to move commits to
another branch after the fact and shared-by-default branches are good
features. Also not having a misanthropic command line interface.
</div>

<b>Stephen Beal writes on 2009-01-11:</b>
<b>Stephan Beal writes on 2009-01-11:</b>

<blockquote>
Sometime in late 2007 I came across a link to fossil on 
<div class="indent">
Sometime in late 2007 I came across a link to fossil on
<a href="http://www.sqlite.org/">sqlite.org</a>. It
was a good thing I bookmarked it, because I was never able to find the
link again (it might have been in a bug report or something). The
reasons I first took a close look at it were (A) it stemmed from the
sqlite project, which I've held in high regards for years (e.g. I
wrote JavaScript bindings for it:
<a href="http://spiderape.sourceforge.net/plugins/sqlite/">
http://spiderape.sourceforge.net/plugins/sqlite/</a>), and (B) it could
run as a CGI. That second point might seem a bit archaic, but in
practice CGI is the only way most hosted sites can set up a shared
source repository with multiple user IDs. (i'm not about to give out
my only account password or SSH key for my hosted sites, no matter how
much I trust the other developers, and none of my hosters allow me to
run standalone servers or add Apache modules.)

So I tried it out. The thing which bugged me most about it was having
to type "commit" or "com" instead of "ci" for checking in (as is
custom in all other systems I've used), despite the fact that fossil
uses "ci" as a filter in things like the timeline view. Looking back
now, I have used fossil for about about 95% of my work in the past
year (http://blog.s11n.net/?p=71), in over 15 source trees, and I now
get tripped up when I have to use svn or cvs.
year (<a href="http://blog.s11n.net/?p=71"><i>dead link</i></a>), in 
over 15 source trees, and I now get tripped up when I have to use svn or cvs.

So, having got over typing "fossil com -m ...", here's why I love it so much...

Point #1: CGI

Again, this sounds archaic, but fossil has allowed me to share source
trees which I cannot justifiably host in other projects I work on
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Firefox, or the Linux Kernel), but 99.9% of projects never reach
anywhere near that size or complexity.


In summary:

I remember my first reaction to fossil being, "this will be an
excellent solution for small projects [like the dozens we've all got
excellent solution for small projects (like the dozens we've all got
sitting on our hard drives but which don't justify the hassle of
version control]." A year of daily use in over 15 source trees has
version control)." A year of daily use in over 15 source trees has
confirmed that, and I continue to heartily recommend fossil to other
developers I know who also have their own collection of "unhosted" pet
projects.
</blockquote>
</div>
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<title>Fossil SCGI</title>

To run Fossil using SCGI, start the [/help/server|fossil server] command
with the --scgi command-line option.  You will probably also want to
specific an alternative TCP/IP port using --port.  For example:

<pre>
fossil server $REPOSITORY --port 9000 --scgi
</pre>

Then configure your SCGI-aware web-server to send SCGI requests to port
9000 on the machine where Fossil is running.  A typical configuration for
this in Nginx is:

<pre>
location ~ ^/demo_project/ {
    include scgi_params;
    scgi_pass localhost:9000;
    scgi_param SCRIPT_NAME "/demo_project";
    scgi_param HTTPS "on";
}
</pre>

Note that Nginx does not normally send either the PATH_INFO or SCRIPT_NAME
variables via SCGI, but Fossil needs one or the other.  So the configuration
above needs to add SCRIPT_NAME.  If you do not do this, Fossil returns an
error.
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<title>Fossil Repository Integrity Self-Checks</title>

<h1 align="center">Fossil Repository Integrity Self-Checks</h1>

Fossil is designed with features to give it a high level
of integrity so that users can have confidence that content will
never be mangled or lost by Fossil.
This note describes the defensive measures that
Fossil uses to help prevent information loss due to bugs.

Fossil has been hosting itself and many other projects for
years now.  Many bugs have been encountered.  But, thanks in large
part to the defensive measures described here, no data has been
lost.  The integrity checks are doing their job well.</p>

<h2>Atomic Check-ins With Rollback</h2>

The fossil repository is an
<a href="http://www.sqlite.org/">SQLite version 3</a> database file.  
The Fossil repository is stored in an
<a href="http://www.sqlite.org/">SQLite</a> database file.
([./tech_overview.wiki | Additional information] about the repository
file format.)
SQLite is very mature and stable and has been in wide-spread use for many
years, so we are confident it will not cause repository
corruption.  SQLite
databases do not corrupt even if a program or system crash or power
failure occurs in the middle of the update.  If some kind of crash
does occur in the middle of a change, then all the changes are rolled
back the next time that the database is accessed.

A check-in operation in fossil makes many changes to the repository
A check-in operation in Fossil makes many changes to the repository
database.  But all these changes happen within a single transaction.
If something goes wrong in the middle of the commit, then the transaction
If something goes wrong in the middle of the commit, even if that something
is a power failure or OS crash, then the transaction
is rolled back and the database is unchanged.

<h2>Verification Of Delta Encodings Prior To Transaction Commit</h2>

The content files that comprise the global state of a fossil respository
The content files that comprise the global state of a Fossil repository
are stored in the repository as a tree.  The leaves of the tree are
stored as zlib-compressed BLOBs.  Interior nodes are deltas from their
decendants.  A lot of encoding is going on.  There is
descendants.  A lot of encoding is going on.  There is
zlib-compression which is relatively well-tested but still might
cause corruption if used improperly.  And there is the relatively
new delta-encoding mechanism designed expressly for fossil.  We want
new [./delta_encoder_algorithm.wiki | delta-encoding mechanism] designed expressly for Fossil.  We want
to make sure that bugs in these encoding mechanisms do not lead to
loss of data.

To increase our confidence that everything in the repository is
recoverable, fossil makes sure it can extract an exact replicate
recoverable, Fossil makes sure it can extract an exact replica
of every content file that it changes just prior to transaction
commit.  So during the course of check-in (or other repository
operation) many different files
in the repository might be modified.  Some files are simply
compressed.  Other files are delta encoded and then compressed.
While all this is going on, fossil makes a record of every file
that is encoded and the SHA1 hash of the original content of that
file.  Then just before transaction commit, fossil re-extracts
the original content of all files that were written, computes
the SHA1 checksum again, and verifies that the checksums match.
While all this is going on, Fossil makes a record of every file
and the SHA1 or SHA3-256 hash of the original content of that
file.  Then just before transaction commit, Fossil re-extracts
the original content of all files that were written, recomputes
the hash, and verifies that the recomputed hash still matches.
If anything does not match up, an error
message is printed and the transaction rolls back.

So, in other words, fossil always checks to make sure it can
So, in other words, Fossil always checks to make sure it can
re-extract a file before it commits a change to that file.
Hence bugs in fossil are unlikely to corrupt the repository in
a way that prevents us from extracting historical versions of 
Hence bugs in Fossil are unlikely to corrupt the repository in
a way that prevents us from extracting historical versions of
files.

<h2>Checksum Over All Files In A Check-in</h2>

Manifest artifacts that define a check-in have two fields (the
R-card and Z-card) that record MD5 hashs of the manifest itself
R-card and Z-card) that record MD5 hashes of the manifest itself
and of all other files in the manifest.  Prior to any check-in
commit, these checksums are verified to ensure that the check-in
checked in agrees exactly with what is on disk.  Similarly,
agrees exactly with what is on disk.  Similarly,
the repository checksum is verified after a checkout to make
sure that the entire repository was checked out correctly.
Note that these added checks use a different hash (MD5 instead
of SHA1) in order to avoid common-mode failures in the hash
Note that these added checks use a different hash algorithm (MD5)
in order to avoid common-mode failures in the hash
algorithm implementation.


<h2>Checksums On Control Artifacts And Deltas</h2>
<h2>Checksums On Structural Artifacts And Deltas</h2>

Every [./fileformat.wiki | control artifact] in a fossil repository
Every [./fileformat.wiki | structural artifact] in a Fossil repository
contains a "Z-card" bearing an MD5 checksum over the rest of the
artifact.  Any mismatch causes the control artifact to be ignored.
artifact.  Any mismatch causes the structural artifact to be ignored.

The [./delta_format.wiki | file delta format] includes a 32-bit
checksum of the target file.  Whenever a file is reconstructed from
a delta, that checksum is verified to make sure the reconstruction
was done correctly.

<h2>Reliability Versus Performance</h2>

Some version control systems make a big deal out of being "high performance"
or the "fastest version control system".  Fossil makes no such claims and has
no such ambition.  Indeed, profiling indicates that fossil bears a
no such ambition.  Indeed, profiling indicates that Fossil bears a
substantial performance cost for
doing all of the checksumming and verification outlined above.
Fossil takes the philosophy of the
<a href="http://en.wikipedia.org/wiki/The_Tortoise_and_the_Hare">tortoise</a>:
reliability is more important than raw speed.  The developers of
fossil see no merit in getting the wrong answer quickly.
Fossil see no merit in getting the wrong answer quickly.

Fossil may not be the fastest versioning system, but it is "fast enough".
Fossil runs quickly enough to stay out of the developers way.  
Most operations complete in under a second.
Fossil may not be the fastest versioning system, but it is <i>fast enough</i>.
Fossil runs quickly enough to stay out of the developer's way.
Most operations complete in milliseconds, faster than you can press
the "Enter" key.
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<title>Fossil Self-Hosting Repositories</title>
<h1 align="center">Fossil Self-Hosting Repositories</h1>

Fossil has self-hosted since 2007-07-21.  As of this writing (2009-08-24)
Fossil has self-hosted since 2007-07-21.  As of 2017-07-25
there are three publicly accessible repositories for the Fossil source code:

  1.  [http://www.fossil-scm.org/]
  1.  [https://fossil-scm.org/]
  2.  [http://www.hwaci.com/cgi-bin/fossil]
  3.  [http://www2.fossil-scm.org/]

  2.  [https://www2.fossil-scm.org/]
  3.  [https://www3.fossil-scm.org/site.cgi]

The canonical repository is (1).  Repositories (2) and (3) automatically
stay in synchronization with (1) via a 
stay in synchronization with (1) via a
<a href="http://en.wikipedia.org/wiki/Cron">cron job</a> that invokes
"fossil sync" at regular intervals.
Repository (2) also publishes a
[https://github.com/drhsqlite/fossil-mirror|GitHub mirror of Fossil]
as a demonstration of [./mirrortogithub.md|how that can be done].

Note that the two secondary repositories are more than just read-only mirrors.
All three servers support full read/write capabilities.
Changes (such as new tickets or wiki or check-ins) can be implemented 
Changes (such as new tickets or wiki or check-ins) can be implemented
on any of the three servers and those changes automatically propagate to the
other two servers.

Server (1) runs as a CGI script on a
<a href="http://www.linode.com/">Linode 720</a> located in Dallas, TX
- on the same virtual machine that 
Server (1) runs as a [./aboutcgi.wiki|CGI script] on a
<a href="http://www.linode.com/">Linode 8192</a> located in Dallas, TX
- on the same virtual machine that
hosts <a href="http://www.sqlite.org/">SQLite</a> and over a
dozen other smaller projects.  This demonstrates that Fossil does not
require much server power.
dozen other smaller projects.  This demonstrates that Fossil can run on
a low-power host processor.
Multiple fossil-based projects can easily be hosted on the same machine,
even if that machine is itself one of several dozen virtual machines on
single physical box.  The CGI script that runs the canonical Fossil
a single physical box.  The CGI script that runs the canonical Fossil
self-hosting repository is as follows:

<blockquote><pre>
<pre>
#!/usr/bin/fossil
repository: /fossil/fossil.fossil
</pre></blockquote>
</pre>

Server (2) runs as a CGI script on a shared hosting account at
<a href="http://www.he.net/">Hurricane Electric</a> in San Jose and
Fremont, CA.  This server demonstrates the ability of
Server (3) ran for 10 years as a CGI script on a shared hosting account at
<a href="http://www.he.net/">Hurricane Electric</a> in Fremont, CA.
This server demonstrated the ability of
Fossil to run on an economical shared-host web account with no
privileges beyond port 80 HTTP access and CGI.  It is not necessary
to have a dedicated computer with administrator privileges to run Fossil.
to have a dedicated server to run Fossil.  As far as we are aware, 
Fossil is the only full-featured configuration management system 
As far as we are aware,
Fossil is the only full-featured configuration management system
that can run in
such a restricted environment.  The CGI script that runs on the
Hurricane Electric server is the same as the CGI script shown above,
except that the pathnames are modified to suite the environment:
such a restricted environment.  The CGI script that ran on the
Hurricane Electric server was the same as the CGI script shown above,
except that the pathnames are modified to suit the environment:

<blockquote><pre>
<pre>
#!/home/hwaci/bin/fossil
repository: /home/hwaci/fossil/fossil.fossil
</pre></blockquote>
</pre>

In recent years, virtual private servers have become a more flexible and
less expensive hosting option compared to shared hosting accounts.
So on 2017-07-25, server (3) was moved
onto a $5/month "droplet" [https://en.wikipedia.org/wiki/Virtual_private_server|VPS]
from [https://www.digitalocean.com|Digital Ocean]
located in San Francisco.

Server (2) is synchronized with the canonical server (1) by running
the following command via cron:
Server (3) is synchronized with the canonical server (1) by running
a command similar to the following via cron:

<blockquote><pre>
/home/hwaci/bin/fossil sync -R /home/hwaci/fossil/fossil.fossil
</pre></blockquote>
<pre>
/usr/local/bin/fossil all sync -u
</pre>

Server (3) is a
<a href="http://www.linode.com/">Linode 360</a> located in Atlanta, GA
Server (2) is a
<a href="http://www.linode.com/">Linode 4096</a> located in Newark, NJ
and set up just like the canonical server (1) with the addition of a
cron job for synchronization as in server (2).
cron job for synchronization.  The same cron job also runs the
[/help?cmd=git|fossil git export] command after each sync in order to
[./mirrortogithub.md#ex1|mirror all changes to GitHub].
Deleted www/server.wiki.
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<nowiki>
<h1 align="center">Server Setup Guide</h1>
<p>This guide is intended to help guide you in setting up a Fossil server.</p>

<h2>Standalone server</h2><blockquote>
The easiest way to set up a Fossil server is to use the <tt>server</tt> or
<tt>ui</tt> command.  Assuming the repository you are interested in serving is
in the file "<tt>repo.fossil</tt>", you can use either of these commands to
start Fossil as a server:
<ul>
<li><tt>fossil server repo.fossil</tt>
<li><tt>fossil ui repo.fossil</tt>
</ul>

<p>
Both of these commands start a Fossil server on port 8080 on the local machine,
which can be accessed with the URL: <tt>http://localhost:8080/</tt> using any
handy web browser.  The difference between the two commands is that "ui", in
addition to starting the Fossil server, also starts a web browser and points it
to the URL mentioned above.
</p>
<p>
NOTES:
<ol>
<li>The option "--port NNN" will start the server on port "NNN" instead of 8080.  
<li>If port 8080 is already being used (perhaps by another Fossil server), then
Fossil will use the next available port number.
<li>Starting either command from within an "open" Fossil checkout will start a
server using the repository corresponding to the checkout.
<li>This is an excellent option for quickly sharing with coworkers on a small network.
<li>A huge advantage to this deployment scenario is that no special "root" or "administrator" access is required in order to share the repository.
</ol>
</p>
</blockquote>

<h2>Fossil as an ''inetd'' service</h2><blockquote>
<p>
Modify your <tt>/etc/inetd.conf</tt> (on Linux, modify as appropriate for your platform) so it contains a line like this:
<blockquote>
<tt>
12345 stream tcp nowait.1000 root /path-to/fossil /path-to/fossil http /other-path-to/repository
</tt>
</blockquote>
In this example, you are telling "inetd" that when an incoming connection on port "12345" happens, it should launch the binary "/path-to/fossil".  Obviously you will need to modify the "path-to" parts as appropriate for your particular setup.
</p>
<p>
This is a more complex setup than the "standalone" server, but it has the advantage of only using system resources when an actual connection is attempted.  If no-one ever connects to that port, a Fossil server will not (automatically) run.  It has the disadvantage of requiring "root" access and therefore may not normally be available to lower-priced "shared" servers on the internet.
</p>
</blockquote>

<h2>Fossil as a ''CGI script''</h2><blockquote>
<p>
This is the most flexible and most likely to be widely usable of these deployment scenarios.  In order for it to work, you must have the ability to install "CGI scripts" on the server you are interested in using. 
</p>
</blockquote>

<h3>One script per repository</h3><blockquote>
<p>
Create a script (let's call it 'repo') in your CGI directory which has content like this:
<blockquote><tt>
#!/path-to/fossil
repository: /path-to-repo/repository
</tt></blockquote>
</p>
<p>
It may be necessary to set permissions properly, or to modify an ".htaccess" file or other server-specific things like that.  Consult with your server provider if you need that sort of assistance.
</p>
<p>
Once the script is set up correctly, and assuming your server is also set correctly, you should be able to access your repository with a URL like: <tt>http://mydomain.org/cgi-bin/repo</tt> (assuming the "repo" script is accessible under "cgi-bin", which would be a typical deployment on Apache for instance).
</p>
</blockquote>

<h3>Serving multiple repositories with one script</h3><blockquote>
<p>
This scenario is almost identical to the previous one.  However, here we will assume you have multiple repositories, in one directory (call it 'fossils').  So as before, create a script (again, 'repo'):
<blockquote><tt>
#!/path-to/fossil
directory: /path-to-repo/fossils
notfound: http://url-to-go-to-if-repo-not-found/
</tt></blockquote>
</p>
<p>
Once deployed, a URL like: <tt>http://mydomain.org/cgi-bin/repo/XYZ</tt> will serve up the repository "fossils/XYX" (if it exists).  This makes serving multiple projects on one server pretty painless.
</p>
</blockquote>

<h2>Securing a repository with SSL</h2><blockquote>
<p>
Using either of the CGI script approaches, it is trivial to use SSL to secure the server.  Simply set up the Fossil CGI scripts etc. as above, but modify the Apache (or IIS, etc.) server to require SSL (that is, a URL with "https://") in order to access the CGI script directory.  This may also be accomplished (on Apache, at least) using appropriate ".htaccess" rules.
</p>
<p>
If you are using "inetd" to serve your repository, then you simply need to add "/usr/bin/stunnel" (perhaps on a different path, depending on your setup) before the command line to launch Fossil.
</p>
<p>
At this stage, the standalone server (e.g. "fossil server") does not support SSL.
</p>
</blockquote>

<h2>Various security concerns with hosted repositories</h2><blockquote>
<p>
There are two main concerns relating to usage of Fossil for sharing sensitive information (source or any other data):
<ul>
<li>Interception of the Fossil synchronization stream, thereby capturing data, and
</ul>Direct access to the Fossil repository on the server
</p>
<p>
Regarding the first, it is adequate to secure the server using SSL, and disallowing any non-SSL access.  The data stream will be encrypted by the HTTPS protocol, rendering the data reasonably secure.  The truly paranoid may wish to deploy <i>ssh</i> encrypted tunnels, but that is quite a bit more difficult and cumbersome to set up (particularly for a larger number of users).
</p>
<p>
As far as direct access to the repository, the same steps must be taken as for any other internet-facing data-store.  Access passwords to any disk-accessing accounts should be strong (and preferably changed from time to time).  However, the data in the repository itself are <i>not</i> encrypted (unless you save encrypted data yourself), and so the system administrators of your server will be able to access your data (as with any hosting service setup).  The only workaround in this case is to host the server yourself, in which case you will need to allocate resources to deal with administration issues.
</p>

</blockquote>

</nowiki>
Added www/server/any/althttpd.md.










































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# Serving via althttpd

[Althttpd][althttpd]
is a light-weight web server that has been used to implement the SQLite and
Fossil websites for well over a decade. Althttpd strives for simplicity,
security, ease of configuration, and low resource usage.

To set up a Fossil server as CGI on a host running the althttpd web
server, follow these steps.
<ol>
<li>Get the althttpd webserver running on the host.  This is easily
done by following the [althttpd documentation][althttpd].

<li>Create a CGI script for your Fossil repository.  The script will
be typically be two lines of code that look something like this:

~~~
    #!/usr/bin/fossil
    repository: /home/yourlogin/fossils/project.fossil
~~~

Modify the filenames to conform to your system, of course.  The
CGI script accepts [other options][cgi] besides the
repository:" line.  You can add in other options as you desire,
but the single "repository:" line is normally all that is needed
to get started.

<li>Make the CGI script executable.

<li>Verify that the fossil repository file and the directory that contains
the repository are both writable by whatever user the web server is
running and.
</ol>

And you are done.  Visit the URL that corresponds to the CGI script
you created to start using your Fossil server.

*[Return to the top-level Fossil server article.](../)*


[althttpd]:  https://sqlite.org/althttpd/
[cgi]:       ../../cgi.wiki
Added www/server/any/cgi.md.



















































































































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# Serving via CGI

A Fossil server can be run from most ordinary web servers as a CGI
program.  This feature allows Fossil to seamlessly integrate into a
larger website.  The [self-hosting Fossil repository web
site](../../selfhost.wiki) is implemented using CGI.  See the
[How CGI Works](../../aboutcgi.wiki) page for background information
on the CGI protocol.

To run Fossil as CGI, create a CGI script (here called "repo") in the
CGI directory of your web server with content like this:

    #!/usr/bin/fossil
    repository: /home/fossil/repo.fossil

Adjust the paths appropriately.  It may be necessary to set certain
permissions on this file or to modify an `.htaccess` file or make other
server-specific changes.  Consult the documentation for your particular
web server. The following permissions are *normally* required, but,
again, may be different for a particular configuration:

*   The Fossil binary (`/usr/bin/fossil` in the example above)
    must be readable/executable.

*   *All* directories leading up to the Fossil binary must be readable
    by the process which executes the CGI.

*   The CGI script must be executable for the user under which it will
    run, which often differs from the one running the web server.
    Consult your site's documentation or the web server’s system
    administrator.

*   *All* directories leading to the CGI script must be readable by the
    web server.

*   The repository file *and* the directory containing it must be
    writable by the same account which executes the Fossil binary.
    (This might differ from the user the web server normally runs
    under.) The directory holding the repository file(s) needs to be
    writable so that SQLite can write its journal files. When using
    another access control system, such as AppArmor or SELinux, it may
    be necessary to explicitly permit that account to read and write
    the necessary files.

*   Fossil must be able to create temporary files in a
    [directory that varies by host OS](../../env-opts.md#temp). When the
    CGI process is operating [within a chroot](../../chroot.md),
    ensure that this directory exists and is readable/writeable by the
    user who executes the Fossil binary.

Once the CGI script is set up correctly, and assuming your server is
also set correctly, you should be able to access your repository with a
URL like: <b>http://mydomain.org/cgi-bin/repo</b> This is assuming you
are running a web server like Apache that uses a “`cgi-bin`†directory
for scripts like our “`repo`†example.

To serve multiple repositories from a directory using CGI, use the
"directory:" tag in the CGI script rather than "repository:".  You
might also want to add a "notfound:" tag to tell where to redirect if
the particular repository requested by the URL is not found:

    #!/usr/bin/fossil
    directory: /home/fossil/repos
    notfound: http://url-to-go-to-if-repo-not-found/

Once deployed, a URL like: <b>http://mydomain.org/cgi-bin/repo/XYZ</b>
will serve up the repository `/home/fossil/repos/XYZ.fossil` if it
exists.

Additional options available to the CGI script are [documented
separately](../../cgi.wiki).

#### CGI with Apache behind an Nginx proxy

For the case where the Fossil repositories live on a computer, itself behind
an Internet-facing machine that employs Nginx to reverse proxy HTTP(S) requests
and take care of the TLS part of the connections in a transparent manner for
the downstream web servers, the CGI parameter `HTTPS=on` might not be set.
However, Fossil in CGI mode needs it in order to generate the correct links.

Apache can be instructed to pass this parameter further to the CGI scripts for
TLS connections with a stanza like

    SetEnvIf X-Forwarded-Proto "https" HTTPS=on

in its config file section for CGI, provided that

    proxy_set_header  X-Forwarded-Proto $scheme;

has been be added in the relevant proxying section of the Nginx config file.

*[Return to the top-level Fossil server article.](../)*

#### Apache mod_cgi and `CONTENT_LENGTH`

At some point in its 2.4.x family, Apache's `mod_cgi` stopped relaying
the Content-Length header in the HTTP reply from CGIs back to clients.
However, Fossil clients prior to 2024-04-17 depended on seeing the
Content-Length header and were unable to handle HTTP replies without
one.  The change in Apache behavior caused "fossil clone" and "fossil
sync" to stop working.  There are two possible fixes to this problem:

  1.  Restore legacy behavior in Apache by adding
      the following to the Apache configuration, scoped to the `<Directory>`
      entry or entries in which fossil is being served via CGI:
      <blockquote><pre>
      &lt;Directory ...&gt;
         SetEnv ap_trust_cgilike_cl "yes"
      &lt;/Directory&gt;
      </pre></blockquote>

  2.  Upgrade your Fossil client to any trunk check-in after 2024-04-17,
      as Fossil was upgraded to be able to deal with the missing
      Content-Length field by
      [check-in a8e33fb161f45b65](/info/a8e33fb161f45b65).
Added www/server/any/http-over-ssh.md.













































































































































































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# Forcing Use of Fossil’s RBAC over SSH

Andy Bradford posted a [clever solution][sshfc] to the problem of
Fossil’s RBAC system [being ignored](../../caps/#webonly) over `ssh://`
URLs: use OpenSSH’s `ForceCommand` feature to route the sync transfer
protocol data over `fossil http` rather than `fossil test-http`.

The setup for this is complicated, but it’s a worthy option when you
need encrypted communications between the client and server, you already
have SSH set up, and [the HTTPS alternative](../../ssl.wiki) is
unworkable for some reason.


## 1. Force remote Fossil access through a wrapper script <a id="sshd"></a>

Put something like the following into the `sshd_config` file on the
Fossil repository server:

``` ssh-config
Match Group fossil
    X11Forwarding no
    AllowTcpForwarding no
    AllowAgentForwarding no
    ForceCommand /home/fossil/bin/wrapper
```

This file is usually found in `/etc/ssh`, but some OSes put it
elsewhere.

The first line presumes that we will put all users who need to use our
Fossil repositories into the `fossil` group, as we will do
[below](#perms). You could instead say something like:

``` ssh-config
Match User alice,bob,carol,dave
```

You have to list the users allowed to use Fossil in this case because
your system likely has a system administrator that uses SSH for remote
shell access, so you want to *exclude* that user from the list. For the
same reason, you don’t want to put the `ForceCommand` directive outside
a `Match` block of some sort.

You could instead list the exceptions:

``` ssh-config
Match User !evi
```

This would permit only [Evi the System Administrator][evi] to bypass this
mechanism.

[evi]: https://en.wikipedia.org/wiki/Evi_Nemeth

If you have a user that needs both interactive SSH shell access *and*
Fossil access, exclude that user from the `Match` rule and use Fossil’s
normal `ssh://` URL scheme for those cases. This user will bypass the
Fossil RBAC, but they effectively have Setup capability on those
repositories anyway by having full read/write access to the DB files via
the shell.


## 2. Rewrite the sync command with that wrapper <a id="wrapper"></a>

When Fossil syncs over SSH, it attempts to launch a remote Fossil
instance with certain parameters in order to set up the HTTP-based sync
protocol over that SSH tunnel. We need to preserve some of this command
and rewrite other parts to make this work.

Here is a simpler variant of Andy’s original wrapper script:

``` sh
#!/bin/bash
set -- $SSH_ORIGINAL_COMMAND
while [ $# -gt 1 ] ; do shift ; done
export REMOTE_USER="$USER"
ROOT=/home/fossil
exec "$ROOT/bin/fossil" http "$ROOT/museum/$(/bin/basename "$1")"
```

The substantive changes are:

1.  Move the command rewriting bits to the start.

2.  Be explicit about executable paths.  You might extend this idea by
    using chroot, BSD jails, Linux containers, etc.

3.  Restrict the Fossil repositories to a single flat subdirectory under
    the `fossil` user’s home directory. This scheme is easier to secure
    than one allowing subdirectories, since you’d need to take care of
    `../` and such to prevent a sandbox escape.

4.  Don’t take the user name via the SSH command; to this author’s mind,
    the user should not get to override their Fossil user name on the
    remote server, as that permits impersonation.  The identity you
    present to the SSH server must be the same identity that the Fossil
    repository you’re working with knows you by.  Since the users
    selected by “`Match`†block above are dedicated to using only Fossil
    in this setup, this restriction shouldn’t present a practical problem.

The script’s shebang line assumes `/bin/sh` is POSIX-compliant, but that
is not the case everywhere. If the script fails to run on your system,
try changing this line to point at `bash`, `dash`, `ksh`, or `zsh`. Also
check the absolute paths for local correctness: is `/bin/basename`
installed on your system, for example?

Under this scheme, you clone with a command like:

    $ fossil clone ssh://HOST/repo.fossil

This will clone the remote `/home/fossil/museum/repo.fossil` repository
to your local machine under the same name and open it into a “`repo/`â€
subdirectory. Notice that we didn’t have to give the `museum/` part of
the path: it’s implicit per point #3 above.

This presumes your local user name matches the remote user name.  Unlike
with `http[s]://` URLs, you don’t have to provide the `USER@` part to
get authenticated access
since this scheme doesn’t permit anonymous cloning. Only
if these two user names are different do you need to add the `USER@` bit to the
URL.


## 3. Set permissions <a id="perms"></a>

This scheme assumes that the users covered by the `Match` rule can read
the wrapper script from where you placed it and execute it, and that
they have read/write access on the directory where the Fossil
repositories are stored.

You can achieve all of this on a Linux box with:

``` shell
sudo adduser fossil
for u in alice bob carol dave ; do 
    sudo adduser $u
    sudo gpasswd -a fossil $u
done
sudo -i -u fossil
chmod 710 .
mkdir -m 750 bin
mkdir -m 770 museum
ln -s /usr/local/bin/fossil bin
```

You then need to copy the Fossil repositories into `~fossil/museum` and
make them readable and writable by group `fossil`. These repositories
presumably already have Fossil users configured, with the necessary
[user capabilities](../../caps/), the point of this article being to
show you how to make Fossil-over-SSH pay attention to those caps.

You must also permit use of `REMOTE_USER` on each shared repository.
Fossil only pays attention to this environment variable in certain
contexts, of which “`fossil http`†is not one. Run this command against
each repo to allow that:

``` shell
echo "INSERT OR REPLACE INTO config VALUES ('remote_user_ok',1,strftime('%s','now'));" |
fossil sql -R museum/repo.fossil
```

Now you can configure SSH authentication for each user. Since Fossil’s
password-saving feature doesn’t work in this case, I suggest setting up
SSH keys via `~USER/.ssh/authorized_keys` since the SSH authentication
occurs on each sync, which Fossil’s default-enabled autosync setting
makes frequent.

Equivalent commands for other OSes should be readily discerned from the
script above.

[sshfc]: forum:/forumpost/0d7d6c3df41fcdfd

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
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# Portable Fossil Service Options

- [Fossil as a standalone HTTP server](./none.md)
- [SCGI under your web server of choice](./scgi.md)
- [CGI under your web server of choice](./cgi.md)
- [CGI under `althttpd`](./althttpd.md)
- [Behind `stunnel` to get TLS encryption](./stunnel.md)
- [`inetd`](./inetd.md)
- [`xinetd`](./xinetd.md)

*[Return to the top-level Fossil server article.](../)*
Added www/server/any/inetd.md.




















































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# Serving via inetd

A Fossil server can be launched on-demand by `inetd` by  using the
[`fossil http`](/help/http) command. To do so, add a line like the
following to its configuration file, typically `/etc/inetd.conf`:

    80 stream tcp nowait.1000 root /usr/bin/fossil /usr/bin/fossil http /home/fossil/repo.fossil

In this example, you are telling `inetd` that when an incoming
connection appears on TCP port 80 that it should launch the program
`/usr/bin/fossil` with the arguments shown.  Obviously you will need to
modify the pathnames for your particular setup.  The final argument is
either the name of the fossil repository to be served or a directory
containing multiple repositories.

If you use a non-standard TCP port on systems where the port
specification must be a symbolic name and cannot be numeric, add the
desired name and port to `/etc/services`.  For example, if you want your
Fossil server running on TCP port 12345 instead of 80, you will need to
add:

    fossil          12345/tcp  # fossil server

and use the symbolic name “`fossil`†instead of the numeric TCP port
number (“12345†in the above example) in `inetd.conf`.

Notice that we configured `inetd` to launch Fossil as root. See the
top-level section on “[The Fossil Chroot
Jail](../../chroot.md)†for the consequences of this and
alternatives to it.

You can instead configure `inetd` to bind to a higher-numbered TCP port,
allowing Fossil to be run as a normal user. In that case, Fossil will
not put itself into a chroot jail, because it assumes you have set up
file permissions and such on the server appropriate for that user.

The `inetd` daemon must be enabled for this to work, and it must be
restarted whenever its configuration file changes.

This is a more complicated method than the [standalone HTTP server
method](./none.md), but it has the advantage of only using system
resources when an actual connection is attempted.  If no one ever
connects to that port, a Fossil server will not (automatically) run. It
has the disadvantage of requiring "root" access, which may not be
available to you, either due to local IT policy or because of
restrictions at your shared Internet hosting service.

For further details, see the relevant section in your system's
documentation. The FreeBSD Handbook covers `inetd` in [this
chapter](https://www.freebsd.org/doc/en/books/handbook/network-inetd.html).

*[Return to the top-level Fossil server article.](../)*
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# Standalone HTTP Server

The easiest way to set up a Fossil server is to use either the
[`server`](/help/server) or [`ui`](/help/ui) command:

*  **fossil server** _REPOSITORY_
*  **fossil ui** _REPOSITORY_

The _REPOSITORY_ argument is either the name of the repository file or a
directory containing many repositories named “`*.fossil`â€.  Both of these
commands start a Fossil server, usually on TCP port 8080, though a
higher numbered port will be used instead if 8080 is already occupied.

You can access these using URLs of the form **http://localhost:8080/**,
or if _REPOSITORY_ is a directory, URLs of the form
**http://localhost:8080/**_repo_**/** where _repo_ is the base name of
the repository file without the “`.fossil`†suffix.

There are several key differences between “`ui`†and “`server`â€:

*   “`ui`†always binds the server to the loopback IP address (127.0.0.1)
    so that it cannot serve to other machines.

*   Anyone who visits this URL is treated as the all-powerful Setup
    user, which is why the first difference exists.
  
*   “`ui`†launches a local web browser pointed at this URL.

You can omit the _REPOSITORY_ argument if you run one of the above
commands from within a Fossil checkout directory to serve that
repository:

    $ fossil ui          # or...
    $ fossil server

You can abbreviate Fossil sub-commands as long as they are unambiguous.
“`server`†can currently be as short as “`ser`â€.

You can serve a directory containing multiple `*.fossil` files like so:

    $ fossil server --port 9000 --repolist /path/to/repo/dir

There is an [example script](/file/tools/fslsrv) in the Fossil
distribution that wraps `fossil server` to produce more complicated
effects. Feel free to take it, study it, and modify it to suit your
local needs.

See the [online documentation](/help/server) for more information on the
options and arguments you can give to these commands.

*[Return to the top-level Fossil server article.](../)*
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# Serving via SCGI

There is an alternative to running Fossil as a [standalone HTTP
server](./none.md), which is to run it in SimpleCGI (a.k.a. SCGI) mode,
which uses the same [`fossil server`](/help/server) command as for HTTP
service. Simply add the `--scgi` command-line option and the stand-alone
server will speak the SCGI protocol rather than raw HTTP.

This can be used with a web server such as [nginx](http://nginx.org)
which does not support [Fossil’s CGI mode](./cgi.md).

A basic nginx configuration to support SCGI with Fossil looks like this:

    location /code/ {
        include scgi_params;
        scgi_param SCRIPT_NAME "/code";
        scgi_pass localhost:9000;
    }

The `scgi_params` file comes with nginx, and it simply translates nginx
internal variables to `scgi_param` directives to create SCGI environment
variables for the proxied program; in this case, Fossil. Our explicit
`scgi_param` call to define `SCRIPT_NAME` adds one more variable to this
set, which is necessary for this configuration to work properly, because
our repo isn’t at the root of the URL hierarchy. Without it, when Fossil
generates absolute URLs, they’ll be missing the `/code` part at the
start, which will typically cause [404 errors][404].

The final directive simply tells nginx to proxy all calls to URLs under
`/code` down to an SCGI program on TCP port 9000. We can temporarily
set Fossil up as a server on that port like so:

    $ fossil server /path/to/repo.fossil --scgi --localhost --port 9000 &

The `--scgi` option switches Fossil into SCGI mode from its default,
which is [stand-alone HTTP server mode](./none.md). All of the other
options discussed in that linked document — such as the ability to serve
a directory full of Fossil repositories rather than just a single
repository — work the same way in SCGI mode.

The `--localhost` option is simply good security: we’re using nginx to
expose Fossil service to the outside world, so there is no good reason
to allow outsiders to contact this Fossil SCGI server directly.

Giving an explicit non-default TCP port number via `--port` is a good
idea to avoid conflicts with use of Fossil’s default TCP service port,
8080, which may conflict with local uses of `fossil ui` and such.

We characterized the SCGI service start command above as “temporaryâ€
because running Fossil in the background like that means it won’t start
back up on a reboot of the server. A simple solution to that is to add
that command to `/etc/rc.local` on systems that have it. However, you
might want to consider setting Fossil up as an OS service instead, so
that you get the benefits of the platform’s service management
framework:

*   [Linux (systemd)](../debian/service.md)
*   [Windows service](../windows/service.md)
*   [macOS (launchd)](../macos/service.md)
*   [xinetd](../any/xinetd.md)
*   [inetd](../any/inetd.md)

We go into more detail on nginx service setup with Fossil in our
[Debian/Ubuntu specific guide](../debian/nginx.md), which also
gets you TLS service.

Similarly, our [OpenBSD specific guide](../openbsd/fastcgi.md) details how
to setup a Fossil server using httpd and FastCGI on OpenBSD.

*[Return to the top-level Fossil server article.](../)*

[404]: https://en.wikipedia.org/wiki/HTTP_404
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# Serving via stunnel

[`stunnel`](https://www.stunnel.org/) is a TLS/SSL proxy for programs
that themselves serve only via HTTP, such as Fossil. (Fossil *can* speak
HTTPS, but only as a client.) `stunnel` decodes the HTTPS data from the
outside world as HTTP before passing it to Fossil, and it encodes the
HTTP replies from Fossil as HTTPS before sending them to the remote host
that made the request.

You can run `stunnel` in one of two modes: socket listener — much like
in our [`inetd` doc](./inetd.md) — and as an HTTP reverse proxy. We’ll
cover both cases here, separately.


## <a id="sa"></a>Socket Activation

The following `stunnel.conf` configuration configures it to run Fossil
in socket listener mode, launching Fossil only when an HTTPS hit comes
in, then shutting it back down as soon as the transaction is complete:

```dosini
    [fossil]
    accept       = 443
    TIMEOUTclose = 0
    exec         = /usr/bin/fossil
    execargs     = /usr/bin/fossil http /home/fossil/ubercool.fossil --https
    cert         = /etc/letsencrypt/live/ubercool-project.org/fullchain.pem
    key          = /etc/letsencrypt/live/ubercool-project.org/privkey.pem
    ciphers      = ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:AES256-GCM-SHA384:AES128-GCM-SHA256:AES256-SHA256:AES128-SHA256:AES128-SHA:DES-CBC3-SHA
    options      = CIPHER_SERVER_PREFERENCE
```

This configuration shows the TLS certificate generated by the [Let’s
Encrypt](https://letsencrypt.org) [Certbot](https://certbot.eff.org) in
[certonly mode](https://certbot.eff.org/lets-encrypt/debianbuster-other).
There are other ways to get TLS certificates, but this is a popular and
free option.

You will need to adjust the site names and paths in this example. Where
this file goes varies by OS type, so check the man pages on your system
to find out where it should be locally.

See the `stunnel` documentation for further details about this
configuration file.

It is important that the [`fossil http`](/help/http) command in that
configuration include the `--https` option to let Fossil know to use
“`https://`†instead of “`http://`†in generated hyperlinks.



## <a id="proxy"></a>Reverse Proxy

You can instead have Fossil running in the background in [standalone
HTTP server mode](./none.md), bound to a high random TCP port number on
localhost via the `--localhost` and `--port` flags, then configure
`stunnel` to reverse proxy public HTTPS connections down to it via HTTP.

The configuration is the same as the above except that you drop the
`exec` and `execargs` directives and add this instead:

```dosini
    connect      = 9000
```

That tells `stunnel` to connect to an already-running process listening
on the given TCP port number.

There are a few advantages to this mode:

1.  At the cost of some server memory and a tiny bit of idle CPU time,
    Fossil remains running so that hits can be served a smidge faster
    than in socket listener mode, where the Fossil binary has to be
    loaded and re-initialized on each HTTPS hit.

2.  The socket listener mode doesn’t work on all platforms that
    `stunnel` runs on, particularly [on Windows](../windows/stunnel.md).

*[Return to the top-level Fossil server article.](../)*

<div style="height:50em" id="this-space-intentionally-left-blank"></div>
Added www/server/any/xinetd.md.



























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# Serving via xinetd

Some operating systems have replaced the old Unix `inetd` daemon with
`xinetd`, which has a similar mission but with a very different
configuration file format.

The typical configuration file is either `/etc/xinetd.conf` or a subfile
in the `/etc/xinetd.d` directory. You need a configuration something
like this for Fossil:

    service http
    {
      port = 80
      socket_type = stream
      wait = no
      user = root
      server = /usr/bin/fossil
      server_args = http /home/fossil/repos/
    }

This example configures Fossil to serve multiple repositories under the
`/home/fossil/repos/` directory.

Beyond this, see the general commentary in our article on [the `inetd`
method](./inetd.md) as they also apply to service via `xinetd`.

*[Return to the top-level Fossil server article.](../)*
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# Debian/Ubuntu Specific Fossil Service Options

- [SCGI under nginx](./nginx.md)
- [`systemd`](./service.md)

*[Return to the top-level Fossil server article.](../)*
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# Serving via nginx on Debian and Ubuntu

This document is an extension of [the platform-independent SCGI
instructions][scgii], which may suffice for your purposes if your needs
are simple.

Here, we add more detailed information on nginx itself, plus details
about running it on Debian type OSes. This document was originally
written for and tested on Debian 10 (Buster) and Ubuntu 20.04, which
were common Tier 1 OS offerings for [virtual private servers][vps]
at the time. The same configuration appears to run on Ubuntu 22.04
LTS without change. This material may not work for older OSes. It is
known in particular to not work as given for Debian 9 and older!

We also cover [adding TLS](#tls) to the basic configuration, because several
details depend on the host OS and web stack details. Besides, TLS is
widely considered part of the baseline configuration these days.

[scgii]: ../any/scgi.md
[vps]:   https://en.wikipedia.org/wiki/Virtual_private_server


## <a id="benefits"></a>Benefits

This scheme is considerably more complicated than the [standalone HTTP
server](../any/none.md) and [CGI options](../any/cgi.md). Even with the
benefit of this guide and pre-built binary packages, it requires quite a
bit of work to set it up. Why should you put up with this complexity?
Because it gives many benefits that are difficult or impossible to get
with the less complicated options:

*   **Power** — nginx is one of the most powerful web servers in the
    world. The chance that you will run into a web serving wall that you
    can’t scale with nginx is very low.

    To give you some idea of the sort of thing you can readily
    accomplish with nginx, your author runs a single public web server
    that provides transparent name-based virtual hosting for four
    separate domains:

    *   <p>One is entirely static, not involving any dynamic content or
        Fossil integration at all.</p>

    *   <p>Another is served almost entirely by Fossil, with a few select
        static content exceptions punched past Fossil, which are handled
        entirely via nginx.</p>

    *   <p>The other two domains are aliases for one another — e.g.
        `example.com` and `example.net` — with most of the content being
        static.  This pair of domains has several unrelated Fossil repo
        proxies attached to various sections of the URI hierarchy.</p>

    By using nginx, I was able to do all of the above with minimal
    repetition between the site configurations.

*   **Integration** — Because nginx is so popular, it integrates with
many different technologies, and many other systems integrate with it in
turn.  This makes it great middleware, sitting between the outer web
world and interior site services like Fossil. It allows Fossil to
participate seamlessly as part of a larger web stack.

*   **Availability** — nginx is already in most operating system binary
package repositories, so you don’t need to go out of your way to get it.


## <a id="modes"></a>Fossil Service Modes

Fossil provides four major ways to access a repository it’s serving
remotely, three of which are straightforward to use with nginx:

*   **HTTP** — Fossil has [a built-in HTTP server](../any/none.md).
    While this method is efficient and it’s
    possible to use nginx to proxy access to another HTTP server, we
    don’t see any particularly good reason to make nginx reinterpret
    Fossil’s own implementation of HTTP when we have a better option.
    (But see [below](#http).)

*   **SSH** — This method exists primarily to avoid the need for HTTPS,
    but we *want* HTTPS. (We’ll get to that [below](#tls).)
    There is probably a way to get nginx to proxy Fossil to HTTPS via
    SSH, but it would be pointlessly complicated.

*   **CGI** — This method is simple but inefficient, because it launches
    a separate Fossil instance on every HTTP hit.
    Since Fossil is a relatively small self-contained program, and it’s
    designed to start up quickly, this method can work well in a
    surprisingly large number of cases.
    Nevertheless, we will avoid this option in this document because
    we’re already buying into a certain amount of complexity here in
    order to gain power.  There’s no sense in throwing away any of that
    hard-won performance on CGI overhead.

*   **SCGI** — The [SCGI protocol][scgip] provides the simplicity of CGI
    without its performance problems.

SCGI it is, then.

[scgip]: https://en.wikipedia.org/wiki/Simple_Common_Gateway_Interface


## <a id="deps"></a>Installing the Dependencies

The first step is to install some non-default packages we’ll need. SSH into
your server, then say:

    $ sudo apt install fossil nginx

You can leave “`fossil`†out of that if you’re building Fossil from
source to get a more up-to-date version than is shipped with the host
OS.


## <a id="scgi"></a>Running Fossil in SCGI Mode

For the following nginx configuration to work, it needs to contact a
background Fossil instance speaking the SCGI protocol. There are
[many ways](../) to set that up, such as [with `systemd`](./service.md)
on mainstream Linux distros.  Another way is to [containerize][ctz] your
repository servers, then use the [`fslsrv` wrapper for Podman][fspm] to
generate `systemd` units for use by the front-end proxy.

However you do it, you need to match up the TCP port numbers between it
and those in the nginx configuration below.

[ctz]:  ../../containers.md
[fspm]: https://tangentsoft.com/fossil/dir/bin


## <a id="config"></a>Configuration

On Debian and Ubuntu systems the primary user-level configuration file
for nginx is `/etc/nginx/sites-enabled/default`. I recommend that this
file contain only a list of include statements, one for each site that
server hosts:

    include local/example.com
    include local/foo.net

Those files then each define one domain’s configuration.  Here,
`/etc/nginx/local/example.com` contains the configuration for
`*.example.com` and its alias `*.example.net`; and `local/foo.net`
contains the configuration for `*.foo.net`.

The configuration for our `example.com` web site, stored in
`/etc/nginx/sites-enabled/local/example.com` is:

----

    server {
        server_name .example.com .example.net "";
        include local/generic;
        include local/code;

        access_log /var/log/nginx/example.com-https-access.log;
        error_log /var/log/nginx/example.com-https-error.log;

        # Bypass Fossil for the static documentation generated from
        # our source code by Doxygen, so it merges into the embedded
        # doc URL hierarchy at Fossil’s $ROOT/doc without requiring that
        # these generated files actually be stored in the repo.  This
        # also lets us set aggressive caching on these docs, since
        # they rarely change.
        location /code/doc/html {
            root /var/www/example.com/code/doc/html;

            location ~* \.(html|ico|css|js|gif|jpg|png)$ {
                add_header Vary Accept-Encoding;
                access_log off;
                expires 7d;
            }
        }

        # Redirect everything under /code to the Fossil instance
        location /code {
            include local/code;

            # Extended caching for URLs that include unique IDs
            location ~ "/(artifact|doc|file|raw)/[0-9a-f]{40,64}" {
                add_header Cache-Control "public, max-age=31536000, immutable";
                include local/code;
                access_log off;
            }

            # Lesser caching for URLs likely to be quasi-static
            location ~* \.(css|gif|ico|js|jpg|png)$ {
                add_header Vary Accept-Encoding;
                include local/code;
                access_log off;
                expires 7d;
            }
        }
    }

----

As you can see, this is a pure extension of [the basic nginx service
configuration for SCGI][scgii], showing off a few ideas you might want to
try on your own site, such as static asset proxying.

You also need a `local/code` file containing:

    include scgi_params;
    scgi_pass 127.0.0.1:12345;
    scgi_param SCRIPT_NAME "/code";

We separate that out because nginx refuses to inherit certain settings
between nested location blocks, so rather than repeat them, we extract
them to this separate file and include it from both locations where it’s
needed. You see this above where we set far-future expiration dates on
files served by Fossil via URLs that contain hashes that change when the
content changes. It tells your browser that the content of these URLs
can never change without the URL itself changing, which makes your
Fossil-based site considerably faster.

Similarly, the `local/generic` file referenced above helps us reduce unnecessary
repetition among the multiple sites this configuration hosts:

    root /var/www/$host;

    listen 80;
    listen [::]:80;

    charset utf-8;

There are some configuration directives that nginx refuses to substitute
variables into, citing performance considerations, so there is a limit
to how much repetition you can squeeze out this way. One such example
are the `access_log` and `error_log` directives, which follow an obvious
pattern from one host to the next. Sadly, you must tolerate some
repetition across `server { }` blocks when setting up multiple domains
on a single server.

The configuration for `foo.net` is similar.

See [the nginx docs](https://nginx.org/en/docs/) for more ideas.


## <a id="http"></a>Proxying HTTP Anyway

[Above](#modes), we argued that proxying SCGI is a better option than
making nginx reinterpret Fossil’s own implementation of HTTP.  If you
want Fossil to speak HTTP, just [set Fossil up as a standalone
server](../any/none.md). And if you want nginx to [provide TLS
encryption for Fossil](#tls), proxying HTTP instead of SCGI provides no
benefit.

However, it is still worth showing the proper method of proxying
Fossil’s HTTP server through nginx if only to make reading nginx
documentation on other sites easier:

    location /code {
        rewrite ^/code(/.*) $1 break;
        proxy_pass http://127.0.0.1:12345;
    }

The most common thing people get wrong when hand-rolling a configuration
like this is to get the slashes wrong. Fossil is sensitive to this. For
instance, Fossil will not collapse double slashes down to a single
slash, as some other HTTP servers will.


## <a id="large-uv"></a> Allowing Large Unversioned Files

By default, nginx only accepts HTTP messages [up to a
meg](http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size)
in size. Fossil chunks its sync protocol such that this is not normally
a problem, but when sending [unversioned content][uv], it uses a single
message for the entire file. Therefore, if you will be storing files
larger than this limit as unversioned content, you need to raise the
limit. Within the `location` block:

    # Allow large unversioned file uploads, such as PDFs
    client_max_body_size 20M;

[uv]: ../../unvers.wiki


## <a id="fail2ban"></a> Integrating `fail2ban`

One of the nice things that falls out of proxying Fossil behind nginx is
that it makes it easier to configure `fail2ban` to recognize attacks on
Fossil and automatically block them. Fossil logs the sorts of errors we
want to detect, but it does so in places like the repository’s admin
log, a SQL table, which `fail2ban` doesn’t know how to query. By putting
Fossil behind an nginx proxy, we convert these failures to log file
form, which `fail2ban` is designed to handle.

First, install `fail2ban`, if you haven’t already:

    sudo apt install fail2ban

We’d like `fail2ban` to react to Fossil `/login` failures.  The stock
configuration of `fail2ban` only detects a few common sorts of SSH
attacks by default, and its included (but disabled) nginx attack
detectors don’t include one that knows how to detect an attack on
Fossil.  We have to teach it by putting the following into
`/etc/fail2ban/filter.d/nginx-fossil-login.conf`:

    [Definition]
    failregex = ^<HOST> - .*POST .*/login HTTP/..." 401

That teaches `fail2ban` how to recognize the errors logged by Fossil.

Then in `/etc/fail2ban/jail.local`, add this section:

    [nginx-fossil-login]
    enabled = true
    logpath = /var/log/nginx/*-https-access.log

The last line is the key: it tells `fail2ban` where we’ve put all of our
per-repo access logs in the nginx config above.

There’s a [lot more you can do][dof2b], but that gets us out of scope of
this guide.


[dof2b]: https://www.digitalocean.com/community/tutorials/how-to-protect-an-nginx-server-with-fail2ban-on-ubuntu-14-04


## <a id="tls"></a> Adding TLS (HTTPS) Support

One of the [many ways](../../ssl.wiki) to provide TLS-encrypted HTTP
access (a.k.a. HTTPS) to Fossil is to run it behind a web proxy that
supports TLS. Because one such option is nginx, it’s best to delegate
TLS to it if you were already using nginx for some other reason, such as
static content serving, with only part of the site being served by
Fossil.

The simplest way by far to do this is to use [Let’s Encrypt][LE]’s
[Certbot][CB], which can configure nginx for you and keep its
certificates up to date. You need but follow their [nginx on Ubuntu 20
guide][CBU]. We had trouble with this in the past, but either Certbot
has gotten smarter or our nginx configurations have gotten simpler, so
we have removed the manual instructions we used to have here.

You may wish to include something like this from each `server { }`
block in your configuration to enable TLS in a common, secure way:

```
# Tell nginx to accept TLS-encrypted HTTPS on the standard TCP port.
listen 443 ssl;
listen [::]:443 ssl;

# Reference the TLS cert files produced by Certbot.
ssl_certificate     /etc/letsencrypt/live/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;

# Load the Let's Encrypt Diffie-Hellman parameters generated for
# this server.  Without this, the server is vulnerable to Logjam.
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

# Tighten things down further, per Qualys’ and Certbot’s advice.
ssl_session_cache shared:le_nginx_SSL:1m;
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers on;
ssl_session_timeout 1440m;

# Offer OCSP certificate stapling.
ssl_stapling on;
ssl_stapling_verify on;

# Enable HSTS.
include local/enable-hsts;
```

The [HSTS] step is optional and should be applied only after due
consideration, since it has the potential to lock users out of your
site if you later change your mind on the TLS configuration.
The `local/enable-hsts` file it references is simply:

    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

It’s a separate file because nginx requires that headers like this be
applied separately for each `location { }` block. We’ve therefore
factored this out so you can `include` it everywhere you need it.

The [OCSP] step is optional, but recommended.

You may find [Qualys’ SSL Server Test][QSLT] helpful in verifying that
you have set all this up correctly, and that the configuration is
strong. We’ve found their [best practices doc][QSLC] to be helpful.  As
of this writing, the above configuration yields an A+ rating when run on
Ubuntu 22.04.01 LTS.

[CB]:   https://certbot.eff.org/
[CBU]:  https://certbot.eff.org/instructions?ws=nginx&os=ubuntufocal
[LE]:   https://letsencrypt.org/
[HSTS]: https://www.nginx.com/blog/http-strict-transport-security-hsts-and-nginx/
[OCSP]: https://en.wikipedia.org/wiki/OCSP_stapling
[QSLC]: https://github.com/ssllabs/research/wiki/SSL-and-TLS-Deployment-Best-Practices
[QSLT]: https://www.ssllabs.com/ssltest/

<div style="height:50em" id="this-space-intentionally-left-blank"></div>

*[Return to the top-level Fossil server article.](../)*
Added www/server/debian/service.md.



































































































































































































































































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# Serving via systemd on Debian and Ubuntu

[`systemd`][sdhome] is the service management framework in all major
in-support versions of Linux.  There are multiple ways to run Fossil
under `systemd`.

[sdhome]: https://www.freedesktop.org/wiki/Software/systemd/
[wpa]:    https://en.wikipedia.org/wiki/Systemd#Adoption


## Containerized Service

Two of the methods for running [containerized Fossil][cntdoc] integrate
with `systemd`, potentially obviating the more direct methods below:

*   If you take [the Podman method][podman] of running containerized
    Fossil, it opens the `podman generate systemd` option for you, as
    exemplified in [the `fslsrv` script][fslsrv] used on this author’s
    public Fossil-based web site. That script pulls its container images
    from [my Docker Hub repo][dhrepo] to avoid the need for my public
    Fossil server to have build tools and a copy of the Fossil source
    tree. You’re welcome to use my images as-is, or you may use these
    tools to bounce custom builds up through a separate container image
    repo you manage.

*   If you’re willing to give up [a lot of features][nsweak] relative to
    Podman, and you’re willing to tolerate a lot more manual
    administrivia, [the nspawn method][nspawn] has a lot less overhead,
    being a direct feature of `systemd` itself.

Both of these options provide [better security][cntsec] than running
Fossil directly under `systemd`, among [other benefits][cntdoc].

[cntdoc]: ../../containers.md
[cntsec]: ../../containers.md#security
[dhrepo]: https://hub.docker.com/r/tangentsoft/fossil
[fslsrv]: https://tangentsoft.com/fossil/dir?name=bin
[nspawn]: ../../containers.md#nspawn
[nsweak]: ../../containers.md#nspawn-weaknesses
[podman]: ../../containers.md#podman


## User Service

A fun thing you can easily do with `systemd` that you can’t directly do
with older technologies like `inetd` and `xinetd` is to set a server up
as a “user†service.

You can’t listen on TCP port 80 with this method due to security
restrictions on TCP ports in every OS where `systemd` runs, but you can
create a listener socket on a high-numbered (&ge; 1024) TCP port,
suitable for sharing a Fossil repo to a workgroup on a private LAN.

To do this, write the following in
`~/.local/share/systemd/user/fossil.service`:

```dosini
[Unit]
Description=Fossil user server
After=network-online.target

[Service]
WorkingDirectory=/home/fossil/museum
ExecStart=/home/fossil/bin/fossil server --port 9000 repo.fossil
Restart=always
RestartSec=3

[Install]
WantedBy=multi-user.target
```

Unlike with `inetd` and `xinetd`, we don’t need to tell `systemd` which
user and group to run this service as, because we’ve installed it
under the account we’re logged into, which `systemd` will use as the
service’s owner.

The result is essentially [the standalone server method](../any/none.md)
coupled with an intelligent service manager that will start it
automatically in the background on system boot, perform automatic
service restarts with back-off logic, and more, making this much more
robust than the by-hand launches of `fossil` in the platform-independent
Fossil server instructions.  The service will stay up until we
explicitly tell it to shut down.

This scheme couples well with [the generic SCGI instructions][scgi] as
it requires a way to run the underlying repository server in the
background. Given that its service port is then proxied by SCGI, it
follows that it doesn’t need to run as a system service. A user service
works perfectly well for this.

Because we’ve set this up as a user service, the commands you give to
manipulate the service vary somewhat from the sort you’re more likely to
find online:

    $ systemctl --user daemon-reload
    $ systemctl --user enable fossil
    $ systemctl --user start fossil
    $ systemctl --user status fossil -l
    $ systemctl --user stop fossil

That is, we don’t need to talk to `systemd` with `sudo` privileges, but
we do need to tell it to look at the user configuration rather than the
system-level configuration.

This scheme isolates the permissions needed by the Fossil server, which
reduces the amount of damage it can do if there is ever a
remotely-triggerable security flaw found in Fossil.

On some `systemd` based OSes, user services only run while that user is
logged in interactively. This is common on systems aiming to provide
desktop environments, where this is the behavior you often want. To
allow background services to continue to run after logout, say:

    $ sudo loginctl enable-linger $USER

You can paste the command just like that into your terminal, since
`$USER` will expand to your login name.

[scgi]: ../any/scgi.md



### System Service Alternative

There are some common reasons that you’d have good cause to install
Fossil as a system-level service rather than the prior user-level one:

*   You’re using [the new `fossil server --cert` feature][sslsrv] to get
    TLS service and want it to listen directly on port 443, rather than be
    proxied, as one had to do before Fossil got the ability to act as a
    TLS server itself.  That requires root privileges, so you can’t run
    it as a user-level service.

*   You’re proxying Fossil with [nginx](./nginx.md) or similar, allowing
    it to bind to high-numbered ports, but because it starts as a system
    service, you can’t get Fossil into the same dependency chain to
    ensure things start up and shut down in the proper order unless it
    *also* runs as a system service.

*   You want to make use of Fossil’s [chroot jail feature][cjail], which
    requires the server to start as root.

There are just a small set of changes required:

1.  Install the unit file to one of the persistent system-level unit
    file directories. Typically, these are:

        /etc/systemd/system
        /lib/systemd/system

2.  Add `User` and `Group` directives to the `[Service]` section so
    Fossil runs as a normal user, preferably one with access only to
    the Fossil repo files, rather than running as `root`.

[sslsrv]: ../../ssl-server.md
[cjail]:  ../../chroot.md


## Socket Activation

Another useful method to serve a Fossil repo via `systemd` is via a
socket listener, which `systemd` calls “[socket activation][sa],â€
roughly equivalent to [the ancient `inetd` method](../any/inetd.md).
It’s more complicated, but it has some nice properties.

We first need to define the privileged socket listener by writing
`/etc/systemd/system/fossil.socket`:

```dosini
[Unit]
Description=Fossil socket

[Socket]
Accept=yes
ListenStream=80
NoDelay=true

[Install]
WantedBy=sockets.target
```

Note the change of configuration directory from the `~/.local` directory
to the system level. We need to start this socket listener at the root
level because of the low-numbered TCP port restriction we brought up
above.

This configuration says more or less the same thing as the socket part
of an `inetd` entry [exemplified elsewhere in this
documentation](../any/inetd.md).

Next, create the service definition file in that same directory as
`fossil@.service`:

```dosini
[Unit]
Description=Fossil socket server
After=network-online.target

[Service]
WorkingDirectory=/home/fossil/museum
ExecStart=/home/fossil/bin/fossil http repo.fossil
StandardInput=socket

[Install]
WantedBy=multi-user.target
```

Notice that we haven’t told `systemd` which user and group to run Fossil
under. Since this is a system-level service definition, that means it
will run as root, which then causes Fossil to [automatically drop into a
`chroot(2)` jail](../../chroot.md) rooted at the `WorkingDirectory`
we’ve configured above, shortly after each `fossil http` call starts.

The `Restart*` directives we had in the user service configuration above
are unnecessary for this method, since Fossil isn’t supposed to remain
running under it. Each HTTP hit starts one Fossil instance, which
handles that single client’s request and then immediately shuts down.

Next, you need to tell `systemd` to reload its system-level
configuration files and enable the listening socket:

    $ sudo systemctl daemon-reload
    $ sudo systemctl enable fossil.socket

And now you can manipulate the socket listener:

    $ sudo systemctl start fossil.socket
    $ sudo systemctl status -l fossil.socket
    $ sudo systemctl stop fossil.socket

Notice that we’re working with the *socket*, not the *service*. The fact
that we’ve given them the same base name and marked the service as an
instantiated service with the “`@`†notation allows `systemd` to
automatically start an instance of the service each time a hit comes in
on the socket that `systemd` is monitoring on Fossil’s behalf. To see
this service instantiation at work, visit a long-running Fossil page
(e.g. `/tarball`) and then give a command like this:

    $ sudo systemctl --full | grep fossil

This will show information about the `fossil` socket and service
instances, which should show your `/tarball` hit handler, if it’s still
running:

    fossil@20-127.0.0.1:80-127.0.0.1:38304.service

You can feed that service instance description to a `systemctl kill`
command to stop that single instance without restarting the whole
`fossil` service, for example.

In all of this, realize that we’re able to manipulate a single socket
listener or single service instance at a time, rather than reload the
whole externally-facing network configuration as with the far more
primitive `inetd` service.

[sa]: http://0pointer.de/blog/projects/socket-activation.html


*[Return to the top-level Fossil server article.](../)*
Added www/server/index.html.




























































































































































































































































































































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<div class='fossil-doc' data-title="How To Configure A Fossil Server">

<style type="text/css">
  .doc > .content th.fep {
    font-family: "Helvetica Neue", "Arial Narrow", "Myriad Pro", "Avenir Next Condensed";
    font-stretch: condensed;
    min-width: 3em;
    padding: 0.4em;
    white-space: nowrap;
  }

  .doc > .content th.host {
    font-family: "Helvetica Neue", "Arial Narrow", "Myriad Pro", "Avenir Next Condensed";
    font-stretch: condensed;
    padding: 0.4em;
    text-align: right;
  }

  .doc > .content td.doc {
    text-align: center;
  }
</style>


<h2>No Server Required</h2>

<p>Fossil does not require a central server, but <a
href="whyuseaserver.wiki">a server can be useful</a>.</p>

<p>A Fossil server does not require much memory, CPU, or disk space
and can run comfortably on a generic $5/month virtual host 
or on a small device like a Raspberry Pi, or it can co-exist 
on a host running other services without getting in the way.

<p>This article is a quick-reference guide for setting up your own
Fossil server, with links to more detailed instructions specific to
particular systems, should you want extra help.</p>


<h2 id="prep">Repository Prep</h2>

<p>Prior to serving a Fossil repository to others, consider running <a
href="$ROOT/help?cmd=ui"><tt>fossil ui</tt></a> locally and taking these
minimum recommended preparation steps:</p>

<ol>
  <li><p>Fossil creates only one user in a <a
  href="$ROOT/help?cmd=new">new repository</a> and gives it the <a
  href="../caps/admin-v-setup.md#apsu">all-powerful Setup capability</a>.
  The 10-digit random password generated for that user is fairly strong
  against remote attack, even without explicit password guess rate
  limiting, but because that user has so much power, you may want to
  give it a much stronger password under Admin → Users.</a></li>

  <li><p>Run the Admin → Security-Audit tool to verify that other
  security-related permissions and settings are as you want them.
  Consider clicking the “Take it private†link on that page to lock down
  the security on that site to a level appropriate to a private
  repository, even if you will eventually want some public service. It's
  better to start from a secure position and open up service
  feature-by-feature as necessary than it is to start from a fully open
  position and lock down features one by one to achieve a secure
  stance.</p></li>
</ol>

<p>With the repository secured, it is safe to upload a copy of the
repository file to your server and proceed with server setup, below.
Further configuration steps can wait until <a href="#postsetup">after
the server is running</a>.</p>


<h2 id="methods">Activation Methods</h2>

<p>There are basically five ways to run a Fossil server:</p>

<ol>
  <li><a href="any/cgi.md">CGI</a>
  <li><a href="#slist">Socket listener</a>
  <li><a href="any/none.md">Stand-alone HTTP server</a>
  <li><a href="any/scgi.md">SCGI</a>
  <li><a href="#ssh">SSH</a>
</ol>

<p>All of these methods can serve either a single repository or a
directory hierarchy containing multiple repositories.</p>

<p>You are not restricted to a single server setup. The same Fossil
repository can be served using two or more of the above techniques at
the same time. These methods use clean, well-defined, standard
interfaces (CGI, SCGI, and HTTP) which allow you to easily migrate from
one method to another in response to changes in hosting providers or
administrator preferences.</p>

<h3 id="cgi">CGI</h3>

<p>Most ordinary web servers can <a href="any/cgi.md">run Fossil as a
CGI script</a>. This method is known to work with Apache,
<tt>lighttpd</tt>, and <a
href="any/althttpd.md"><tt>althttpd</tt></a>.  The Fossil server
administrator places a <a href="$ROOT/help?cmd=cgi">short CGI script</a> in
the web server's document hierarchy and when a client requests the URL
that corresponds to that script, Fossil runs and generates the
response.</p>

<p>CGI is a good choice for merging Fossil into an existing web site,
particularly on hosts that have CGI set up and working.
The Fossil <a href="../selfhost.wiki">self-hosting repositories</a> are
implemented with CGI underneath <tt>althttpd</tt>.</p>

<h3 id="slist">Socket Listener</h3>

<p>Socket listener daemons such as
<a id="inetd" href="any/inetd.md"><tt>inetd</tt></a>, <a id="xinetd"
href="any/xinetd.md"><tt>xinetd</tt></a>, <a id="stunnel"
href="any/stunnel.md"><tt>stunnel</tt></a>, <a
href="macos/service.md"><tt>launchd</tt></a>, and <a
href="debian/service.md"><tt>systemd</tt></a>
can be configured to invoke the the
<a href="$ROOT/help?cmd=http"><tt>fossil http</tt></a> command to handle
each incoming HTTP request.  The "<tt>fossil http</tt>" command reads
the HTTP request off of standard input, computes an appropriate
reply, and writes the reply on standard output.  There is a separate
invocation of the "<tt>fossil http</tt>" command for each HTTP request.
The socket listener daemon takes care of relaying content to and from
the client, and (in the case of <a href="any/stunnel.md">stunnel</a>) 
handling TLS decryption and encryption.

<h3 id="standalone">Stand-alone HTTP Server</h3>

<p>This is the <a href="any/none.md">easiest method</a>.
A stand-alone server uses the
<a href="$ROOT/help?cmd=server"><tt>fossil server</tt></a> command to run a
process that listens for incoming HTTP requests on a socket and then
dispatches a copy of itself to deal with each incoming request. You can
expose Fossil directly to the clients in this way or you can interpose a
<a href="https://en.wikipedia.org/wiki/Reverse_proxy">reverse proxy</a>
layer between the clients and Fossil.</p>

<h3 id="scgi">SCGI</h3>

<p>The Fossil standalone server can also handle <a href="any/scgi.md">SCGI</a>.
When the <a href="$ROOT/help?cmd=server"><tt>fossil server</tt></a> command is
run with the extra <tt>--scgi</tt> option, it listens for incoming
SCGI requests rather than HTTP requests. This allows Fossil to
respond to requests from web servers <a href="debian/nginx.md">such as
nginx</a> that don't support CGI. SCGI is a simpler protocol to proxy
than HTTP, since the HTTP doesn't have to be re-interpreted in terms of
the proxy's existing HTTP implementation, but it's more complex to set
up because you also have to set up an SCGI-to-HTTP proxy for it. It is
worth taking on this difficulty only when you need to integrate Fossil
into an existing web site already being served by an SCGI-capable web
server.</p>

<h3 id="ssh">SSH</h3>

<p>Fossil supports <tt>ssh://</tt> URLs, but there are <a
href="../caps/#webonly">practical limitations</a> with the default
behavior. You can get the full power of <a href="../caps/">Fossil's RBAC
system</a> over SSH <a href="any/http-over-ssh.md">with a bit of clever
configuration</a>.</p>

<h2 id="matrix">Activation Tutorials</h2>

<p>We've broken the configuration for each method out into a series of
sub-articles. Some of these are generic, while others depend on
particular operating systems or front-end software:</p>

<div class="indent"><table>
    <tr>
        <th class="host">⇩ OS / Method ⇨</th>
        <th class="fep">direct</th>
        <th class="fep">inetd</th>
        <th class="fep">stunnel</th>
        <th class="fep">CGI</th>
        <th class="fep">SCGI</th>
        <th class="fep">FastCGI</th>
        <th class="fep">althttpd</th>
        <th class="fep">proxy</th>
        <th class="fep">service</th>
    </tr>

    <tr>
        <th class="host"><a href="any/">Any</a></th>
        <td class="doc"><a href="any/none.md">✅</a></td>
        <td class="doc"><a href="any/inetd.md">✅</a></td>
        <td class="doc"><a href="any/stunnel.md">✅</a></td>
        <td class="doc"><a href="any/cgi.md">✅</a></td>
        <td class="doc"><a href="any/scgi.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="any/althttpd.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc">âŒ</td>
    </tr>

    <tr>
        <th class="host"><a href="debian/">Debian/Ubuntu</a></th>
        <td class="doc"><a href="any/none.md">✅</a></td>
        <td class="doc"><a href="any/inetd.md">✅</a></td>
        <td class="doc"><a href="any/stunnel.md">✅</a></td>
        <td class="doc"><a href="any/cgi.md">✅</a></td>
        <td class="doc"><a href="any/scgi.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="any/althttpd.md">✅</a></td>
        <td class="doc"><a href="debian/nginx.md">✅</a></td>
        <td class="doc"><a href="debian/service.md">✅</a></td>
    </tr>

    <tr>
        <th class="host"><a href="macos/">macOS</a></th>
        <td class="doc"><a href="any/none.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="any/stunnel.md">✅</a></td>
        <td class="doc"><a href="any/cgi.md">✅</a></td>
        <td class="doc"><a href="any/scgi.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="any/althttpd.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="macos/service.md">✅</a></td>
    </tr>

    <tr>
        <th class="host"><a href="openbsd/">OpenBSD</a></th>
        <td class="doc"><a href="any/none.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="any/stunnel.md">✅</a></td>
        <td class="doc"><a href="any/cgi.md">✅</a></td>
        <td class="doc"><a href="any/scgi.md">✅</a></td>
        <td class="doc"><a href="openbsd/fastcgi.md">✅</a></td>
        <td class="doc"><a href="any/althttpd.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="openbsd/service.wiki">✅</a></td>
    </tr>

    <tr>
        <th class="host"><a href="windows/">Windows</a></th>
        <td class="doc"><a href="windows/none.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="windows/stunnel.md">✅</a></td>
        <td class="doc"><a href="windows/cgi.md">✅</a></td>
        <td class="doc">âŒ</td>
        <td class="doc">âŒ</td>
        <td class="doc">âŒ</td>
        <td class="doc"><a href="windows/iis.md">✅</a></td>
        <td class="doc"><a href="windows/service.md">✅</a></td>
    </tr>
</table></div>

<p>Where there is a check mark in the "<b>Any</b>" row, the method for that is
generic enough that it works across OSes that Fossil is known to work
on. The check marks below that usually just link to this generic
documentation.</p>

<p>The method in the "<b>proxy</b>" column is for the platform's default
web server configured as a <a
href="https://en.wikipedia.org/wiki/Reverse_proxy">reverse proxy</a> for
Fossil's built-in HTTP server: <a href="debian/nginx.md">nginx</a>, <a
href="windows/iis.md">IIS</a>, Apache, etc.</p>

<p>We welcome <a href="../contribute.wiki">contributions</a> to fill gaps
(<font size="-2">âŒ</font>) in the table above.</p>
</noscript>


<h2 id="postsetup">Post-Activation Configuration</h2>

<p>After the server is up and running, log into it as the Setup user and
visit the Admin menu to finish configuring that repository for
service:</p>

<ol>
  <li><p>Add user accounts for your other team members. Use <a
  href="../caps/index.md#ucat">categories</a> to define access policies
  rather than redundantly give each new user the same <a
  href="../caps/index.md#ucap">individual capabilities</a>.</p></li>

  <li><p>Test access to the repository from each category of non-Setup
  user that you created. You may have to give your user categories some
  overlooked capabilities, particularly if you followed <a
  href="#prep">our earlier advice</a> to take the repository private
  prior to setting up the server.</p></li>

  <li><p>Modify the repository's look and feel by <a
  href="../customskin.md">customizing the skin</a>.</p></li>

  <li><p>If the repository includes <a
  href="../embeddeddoc.wiki">embedded documentation</a>, consider
  activating the search feature (Admin → Search) so that visitors can do
  full-text search on your documentation.</p></li>

  <li><p>Now that others can be making changes to the repository,
  consider monitoring them via <a href="../alerts.md">email alerts</a>
  or the <a href="$ROOT/help?cmd=/timeline.rss">timeline RSS
  feed</a>.</p></li>

  <li><p>Turn on the various logging features.</p></li>
</ol>

<p>Reload the Admin → Security-Audit page occasionally during this
process to double check that you have not mistakenly configured the
server in a way that might expose information that you want to keep
private.</p>


<h2 id="more">Further Details</h2>

<ul>
  <li><a id="chroot"   href="../chroot.md"     >The Server Chroot Jail</a>
  <li><a id="loadmgmt" href="../loadmgmt.md"   >Managing Server Load</a>
  <li><a id="bkofc"    href="../backoffice.md" >The Backoffice</a>
  <li><a id="tls"      href="../ssl.wiki"      >Securing a Repository with TLS</a>
  <li><a id="ext"      href="../serverext.wiki">CGI Server Extensions</a>
  <li><a id="about"    href="../aboutcgi.wiki" >How CGI Works In Fossil</a>
  <li><a id="sync"     href="../sync.wiki"     >The Fossil Sync Protocol</a>
</ul>

</div>
Added www/server/macos/index.md.





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# macOS Specific Fossil Service Options

- [Running Fossil under `launchd`](./service.md)

*[Return to the top-level Fossil server article.](../)*
Added www/server/macos/service.md.





















































































































































































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# Serving via launchd on macOS

[`launchd`][ldhome] is the default service management framework on macOS
[since the release of Tiger in 2005][wpa]. If you want a Fossil server
to launch in the background on a Mac, it’s the way Apple wants you to do
it. `launchd` is to macOS as `systemd` is to most modern Linux desktop
systems. (Indeed, `systemd` arguably reinvented the perfectly good,
pre-existing `launchd` wheel.)

Unlike in [our `systemd` article](../debian/service.md), we’re not going
to show the per-user method here, because those so-called
[LaunchAgents][la] only start when a user is logged into the GUI, and
they stop when that user logs out. This does not strike us as proper
“server†behavior, so we’ll stick to system-level LaunchDaemons instead.

However, we will still give two different configurations, just as in the
`systemd` article: one for a standalone HTTP server, and one using
socket activation.

For more information on `launchd`, the single best resource we’ve found
is [launchd.info](https://launchd.info). The next best is:

    $ man launchd.plist

[la]:     http://www.grivet-tools.com/blog/2014/launchdaemons-vs-launchagents/
[ldhome]: https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPSystemStartup/Chapters/CreatingLaunchdJobs.html
[wpa]:    https://en.wikipedia.org/wiki/Launchd



## Standalone HTTP Server

To configure `launchd` to start Fossil as a standalone HTTP server,
write the following as `com.example.dev.FossilHTTP.plist`:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
    "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.example.dev.FossilHTTP</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/bin/fossil</string>
        <string>server</string>
        <string>--port</string>
        <string>9000</string>
        <string>repo.fossil</string>
    </array>
    <key>WorkingDirectory</key>
    <string>/Users/you/museum</string>
    <key>KeepAlive</key>
    <true/>
    <key>RunAtLoad</key>
    <true/>
    <key>StandardErrorPath</key>
    <string>/tmp/fossil-error.log</string>
    <key>StandardOutPath</key>
    <string>/tmp/fossil-info.log</string>
    <key>UserName</key>
    <string>you</string>
    <key>GroupName</key>
    <string>staff</string>
    <key>InitGroups</key>
    <true/>
</dict>
</plist>
```

In this example, we’re assuming your development organization uses the
domain name “`dev.example.org`â€, that your short macOS login name is
“`you`â€, and that you store your Fossils in “`~/museum`â€. Adjust these
elements of the plist file to suit your local situation.

You might be wondering about the use of `UserName`: isn’t Fossil
supposed to drop privileges and enter [a `chroot(2)`
jail](../../chroot.md) when it’s started as root like this? Why do we
need to give it a user name? Won’t Fossil use the owner of the
repository file to set that? All I can tell you is that in testing here,
if you leave the user and group configuration at the tail end of that
plist file out, Fossil will remain running as root!

Install that file and set it to start with:

    $ sudo install -o root -g wheel -m 644 com.example.dev.FossilHTTP.plist \
      /Library/LaunchDaemons/
    $ sudo launchctl load -w /Library/LaunchDaemons/com.example.dev.FossilHTTP.plist

Because we set the `RunAtLoad` key, this will also launch the daemon.

Stop the daemon with:

    $ sudo launchctl unload -w /Library/LaunchDaemons/com.example.dev.FossilHTTP.plist


## Socket Listener

Another useful method to serve a Fossil repo via `launchd` is by setting
up a socket listener:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
    "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.example.dev.FossilSocket</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/bin/fossil</string>
        <string>http</string>
        <string>repo.fossil</string>
    </array>
    <key>Sockets</key>
    <dict>
        <key>Listeners</key>
        <dict>
            <key>SockServiceName</key>
            <string>9001</string>
            <key>SockType</key>
            <string>stream</string>
            <key>SockProtocol</key>
            <string>TCP</string>
            <key>SockFamily</key>
            <string>IPv4</string>
        </dict>
    </dict>
    <key>inetdCompatibility</key>
    <dict>
        <key>Wait</key>
        <false/>
    </dict>
    <key>WorkingDirectory</key>
    <string>/Users/you/museum</string>
    <key>UserName</key>
    <string>you</string>
    <key>GroupName</key>
    <string>staff</string>
    <key>InitGroups</key>
    <true/>
</dict>
</plist>
```

Save it as “`com.example.dev.FossilSocket.plist`†and install and load
it into `launchd` as above.

This version differs in several key ways:

1.  We’re calling Fossil as `fossil http` rather than `fossil server` to
    make it serve a single request and then shut down immediately.

2.  We’ve told `launchd` to listen on our TCP port number instead of
    passing it to `fossil`.

3.  We’re running the daemon in `inetd` compatibility mode of `launchd`
    with “wait†mode off, which tells it to attach the connected socket
    to the `fossil` process’s stdio handles.

4.  We’ve removed the `Standard*Path` keys because they interfere with
    our use of stdio handles for HTTP I/O. You might therefore want to
    start with the first method and then switch over to this one only
    once you’ve got the daemon launching debugged, since once you tie up
    stdio this way, you won’t be able to get logging information from
    Fossil via that path. (Fossil does have some internal logging
    mechanisms, but you can’t get at them until Fossil is launching!)

5.  We’ve removed the `KeepAlive` and `RunAtLoad` keys because those
    options aren’t appropriate to this type of service.

6.  Because we’re running it via a socket listener instead of as a
    standalone HTTP server, the Fossil service only takes system
    resources when it’s actually handling an HTTP hit.  If your Fossil
    server is mostly idle, this method will be a bit more efficient than
    the first option.


*[Return to the top-level Fossil server article.](../)*
Added www/server/openbsd/fastcgi.md.














































































































































































































































































































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# Serving via httpd on OpenBSD

[`httpd`][httpd] is the default web server that is included in the base
install on OpenBSD. It's minimal and lightweight but secure and capable,
and provides a clean interface for setting up a Fossil server using
FastCGI.

This article will detail the steps required to setup a TLS-enabled
`httpd` configuration that serves multiple Fossil repositories out of
a single directory within a chroot, and allow `ssh` access to create
new repositories remotely.

**NOTE:** The following instructions assume an OpenBSD 6.7 installation.

[httpd]: https://www.openbsd.org/papers/httpd-asiabsdcon2015.pdf

## <a id="fslinstall"></a>Install Fossil

Use the OpenBSD package manager `pkg_add` to install Fossil, making sure
to select the statically linked binary.

```console
$ doas pkg_add fossil
quirks-3.325 signed on 2020-06-12T06:24:53Z
Ambiguous: choose package for fossil
      0: <None>
      1: fossil-2.10v0
      2: fossil-2.10v0-static
Your choice: 2
fossil-2.10v0-static: ok
```

This installs Fossil into the chroot. To facilitate local use, create a
symbolic link of the fossil executable into `/usr/local/bin`.

```console
$ doas ln -s /var/www/bin/fossil /usr/local/bin/fossil
```

As a privileged user, create the file `/var/www/cgi-bin/scm` with the
following contents to make the CGI script that `httpd` will execute in
response to `fsl.domain.tld` requests; all paths are relative to the
`/var/www` chroot.

```sh
#!/bin/fossil
directory: /htdocs/fsl.domain.tld
notfound: https://domain.tld
repolist
errorlog: /logs/fossil.log
```

The `directory` directive instructs Fossil to serve all repositories
found in `/var/www/htdocs/fsl.domain.tld`, while `errorlog` sets logging
to be saved to `/var/www/logs/fossil.log`; create the repository
directory and log file—making the latter owned by the `www` user, and
the script executable.

```console
$ doas mkdir /var/www/htdocs/fsl.domain.tld
$ doas touch /var/www/logs/fossil.log
$ doas chown www /var/www/logs/fossil.log
$ doas chmod 660 /var/www/logs/fossil.log
$ doas chmod 755 /var/www/cgi-bin/scm
```

## <a id="chroot"></a>Setup chroot

Fossil needs both `/dev/random` and `/dev/null`, which aren't accessible
from within the chroot, so need to be constructed; `/var`, however, is
mounted with the `nodev` option. Rather than removing this default
setting, create a small memory filesystem and then mount it on to
`/var/www/dev` with [`mount_mfs(8)`][mfs] so that the `random` and
`null` device files can be created. In order to avoid necessitating a
startup script to recreate the device files at boot, create a template
of the needed ``/dev`` tree to automatically populate the memory
filesystem.

```console
$ doas mkdir /var/www/dev
$ doas install -d -g daemon /template/dev
$ cd /template/dev
$ doas /dev/MAKEDEV urandom
$ doas mknod -m 666 null c 2 2
$ doas mount_mfs -s 1M -P /template/dev /dev/sd0b /var/www/dev
$ ls -l
total 0
crw-rw-rw-  1 root  daemon    2,   2 Jun 20 08:56 null
lrwxr-xr-x  1 root  daemon         7 Jun 18 06:30 random@ -> urandom
crw-r--r--  1 root  wheel    45,   0 Jun 18 06:30 urandom
```

[mfs]: https://man.openbsd.org/mount_mfs.8

To make the mountable memory filesystem permanent, open `/etc/fstab` as
a privileged user and add the following line to automate creation of the
filesystem at startup:

```console
swap /var/www/dev mfs rw,-s=1048576,-P=/template/dev 0 0
```

The same user that executes the fossil binary must have writable access
to the repository directory that resides within the chroot; on OpenBSD
this is `www`. In addition, grant repository directory ownership to the
user who will push to, pull from, and create repositories.

```console
$ doas chown -R user:www /var/www/htdocs/fsl.domain.tld
$ doas chmod 770 /var/www/htdocs/fsl.domain.tld
```

## <a id="httpdconfig"></a>Configure httpd

On OpenBSD, [httpd.conf(5)][httpd] is the configuration file for
`httpd`. To setup the server to serve all Fossil repositores within the
directory specified in the CGI script, and automatically redirect
standard HTTP requests to HTTPS—apart from [Let's Encrypt][LE]
challenges issued in response to [acme-client(1)][acme] certificate
requests—create `/etc/httpd.conf` as a privileged user with the
following contents.

[LE]: https://letsencrypt.org
[acme]: https://man.openbsd.org/acme-client.1
[httpd.conf(5)]: https://man.openbsd.org/httpd.conf.5

```apache
server "fsl.domain.tld" {
    listen on * port http
    root "/htdocs/fsl.domain.tld"
    location "/.well-known/acme-challenge/*" {
        root "/acme"
        request strip 2
    }
    location * {
        block return 301 "https://$HTTP_HOST$REQUEST_URI"
    }
    location  "/*" {
        fastcgi { param SCRIPT_FILENAME "/cgi-bin/scm" }
    }
}

server "fsl.domain.tld" {
    listen on * tls port https
    root "/htdocs/fsl.domain.tld"
    tls {
        certificate "/etc/ssl/domain.tld.fullchain.pem"
        key "/etc/ssl/private/domain.tld.key"
    }
    hsts {
        max-age 15768000
        preload
        subdomains
    }
    connection max request body 104857600
    location  "/*" {
        fastcgi { param SCRIPT_FILENAME "/cgi-bin/scm" }
    }
    location "/.well-known/acme-challenge/*" {
        root "/acme"
        request strip 2
    }
}
```

[The default limit][dlim] for HTTP messages in OpenBSD’s `httpd` server
is 1 MiB. Fossil chunks its sync protocol such that this is not
normally a problem, but when sending [unversioned content][uv], it uses
a single message for the entire file. Therefore, if you will be storing
files larger than this limit as unversioned content, you need to raise
the limit as we’ve done above with the “`connection max request body`â€
setting, raising the limit to 100 MiB.

[dlim]: https://man.openbsd.org/httpd.conf.5#connection
[uv]:   ../../unvers.wiki

**NOTE:** If not already in possession of an HTTPS certificate, comment
out the `https` server block and proceed to securing a free
[Let's Encrypt Certificate](#letsencrypt); otherwise skip to
[Start `httpd`](#starthttpd).


## <a id="letsencrypt"></a>Let's Encrypt Certificate

In order for `httpd` to serve HTTPS, secure a free certificate from
Let's Encrypt using `acme-client`. Before issuing the request, however,
ensure you have a zone record for the subdomain with your registrar or
nameserver. Then open `/etc/acme-client.conf` as a privileged user to
configure the request.

```dosini
authority letsencrypt {
    api url "https://acme-v02.api.letsencrypt.org/directory"
    account key "/etc/acme/letsencrypt-privkey.pem"
}

authority letsencrypt-staging {
    api url "https://acme-staging.api.letsencrypt.org/directory"
    account key "/etc/acme/letsencrypt-staging-privkey.pem"
}

domain domain.tld {
    alternative names { www.domain.tld fsl.domain.tld }
    domain key "/etc/ssl/private/domain.tld.key"
    domain certificate "/etc/ssl/domain.tld.crt"
    domain full chain certificate "/etc/ssl/domain.tld.fullchain.pem"
    sign with letsencrypt
}
```

Start `httpd` with the new configuration file, and issue the certificate
request.

```console
$ doas rcctl start httpd
$ doas acme-client -vv domain.tld
acme-client: /etc/acme/letsencrypt-privkey.pem: account key exists (not creating)
acme-client: /etc/acme/letsencrypt-privkey.pem: loaded RSA account key
acme-client: /etc/ssl/private/domain.tld.key: generated RSA domain key
acme-client: https://acme-v01.api.letsencrypt.org/directory: directories
acme-client: acme-v01.api.letsencrypt.org: DNS: 172.65.32.248
...
N(Q????Z???j?j?>W#????b???? H????eb??T??*? DNosz(???n{L}???D???4[?B] (1174 bytes)
acme-client: /etc/ssl/domain.tld.crt: created
acme-client: /etc/ssl/domain.tld.fullchain.pem: created
```

A successful result will output the public certificate, full chain of
trust, and private key into the `/etc/ssl` directory as specified in
`acme-client.conf`.

```console
$ doas ls -lR /etc/ssl
-r--r--r--   1 root  wheel   2.3K Mar  2 01:31:03 2018 domain.tld.crt
-r--r--r--   1 root  wheel   3.9K Mar  2 01:31:03 2018 domain.tld.fullchain.pem

/etc/ssl/private:
-r--------  1 root  wheel   3.2K Mar  2 01:31:03 2018 domain.tld.key
```

Make sure to reopen `/etc/httpd.conf` to uncomment the second server
block responsible for serving HTTPS requests before proceeding.

## <a id="starthttpd"></a>Start `httpd`

With `httpd` configured to serve Fossil repositories out of
`/var/www/htdocs/fsl.domain.tld`, and the certificates and key in place,
enable and start `slowcgi`—OpenBSD's FastCGI wrapper server that will
execute the above Fossil CGI script—before checking that the syntax of
the `httpd.conf` configuration file is correct, and (re)starting the
server (if still running from requesting a Let's Encrypt certificate).

```console
$ doas rcctl enable slowcgi
$ doas rcctl start slowcgi
slowcgi(ok)
$ doas httpd -vnf /etc/httpd.conf
configuration OK
$ doas rcctl start httpd
httpd(ok)
```

## <a id="clientconfig"></a>Configure Client

To facilitate creating new repositories and pushing them to the server,
add the following function to your `~/.cshrc` or `~/.zprofile` or the
config file for whichever shell you are using on your development box.

```sh
finit() {
    fossil init $1.fossil && \
    chmod 664 $1.fossil && \
    fossil open $1.fossil && \
    fossil user password $USER $PASSWD && \
    fossil remote-url https://$USER:$PASSWD@fsl.domain.tld/$1 && \
    rsync --perms $1.fossil $USER@fsl.domain.tld:/var/www/htdocs/fsl.domain.tld/ >/dev/null && \
    chmod 644 $1.fossil && \
    fossil ui
}
```

This enables a new repository to be made with `finit repo`, which will
create the fossil repository file `repo.fossil` in the current working
directory; by default, the repository user is set to the environment
variable `$USER`. It then opens the repository and sets the user
password to the `$PASSWD` environment variable (which you can either set
with `export PASSWD 'password'` on the command line or add to a
*secured* shell environment file), and the `remote-url` to
`https://fsl.domain.tld/repo` with the credentials of `$USER` who is
authenticated with `$PASSWD`. Finally, it `rsync`'s the file to the
server before opening the local repository in your browser where you can
adjust settings such as anonymous user access, and set pertinent
repository details. Thereafter, you can add files with `fossil add`, and
commit with `fossil ci -m 'commit message'` where Fossil, by default,
will push to the `remote-url`. It's suggested you read the
[Fossil documentation][documentation]; with a sane and consistent
development model, the system is much more efficient and cohesive than
`git`—so the learning curve is not steep at all.

[documentation]: https://fossil-scm.org/home/doc/trunk/www/permutedindex.html

*[Return to the top-level Fossil server article.](../)*
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# Debian/Ubuntu Specific Fossil Service Options

- [Serving Fossil under OpenBSD’s `httpd` via FastCGI](./fastcgi.md)
- [Running Fossil as a service on OpenBSD](./service.wiki)

*[Return to the top-level Fossil server article.](../)*
Added www/server/openbsd/service.wiki.






















































































































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<title>Serving via rc on OpenBSD</title>

OpenBSD provides [https://man.openbsd.org/rc.subr.8|rc.subr(8)],
a framework for writing [https://man.openbsd.org/rc.8|rc(8)] scripts.

<h2>Creating the daemon</h2>

Create the file /etc/rc.d/fossil with contents like the following.

<pre>
#!/bin/ksh
daemon="/usr/local/bin/fossil" # fossil executable
daemon_user="_fossil" # user to run fossil as
daemon_flags="server /home/_fossil/example --repolist --port 8888" # fossil command

. /etc/rc.d/rc.subr
# pexp="$daemon server .*" # See below.
rc_reload=NO # Unsupported by Fossil; 'rcctl reload fossil' kills the process.
rc_bg=YES # Run in the background, since fossil serve does not daemonize itself
rc_cmd $1
</pre>

<h3>pexp</h3>

You may need to uncomment the "pexp=". rc.subr typically
finds the daemon process based by matching the process name and argument list.
Without the "pexp=" line, rc.subr would look for this exact command:

<pre>
/usr/local/bin/fossil server /home/_fossil/example --repolist --port 8888
</pre>

Depending on the arguments and their order, fossil may rewrite the arguments
for display in the process listing ([https://man.openbsd.org/ps.1|ps(1)]),
so rc.subr may fail to find the process through the default match. The example
above does not get rewritten, but the same commands in a different order can
be rewritten.
For example, when I switch the order of the arguments in "daemon_flags",

<pre>
/usr/local/bin/fossil server --repolist --port 8888 /home/_fossil/example
</pre>

the process command is changed to this.

<pre>
/usr/local/bin/fossil server /home/_fossil/example /home/_fossil/example 8888 /home/_fossil/example
</pre>

The commented "pexp=" line instructs rc.subr to choose the process whose
command and arguments text starts with this:

<pre>
/usr/local/bin/fossil server 
</pre>

<h2>Enabling the daemon</h2>

Once you have created /etc/rc.d/fossil, run these commands.

<pre>
rcctl enable fossil # add fossil to pkg_scripts in /etc/rc.conf.local
rcctl start fossil # start the daemon now
</pre>

The daemon should now be running and set to start at boot.

<h2>Multiple daemons</h2>

You may want to serve multiple fossil instances with different options.
For example,

  *  If different users own different repositories, you may want different users
     to serve different repositories.
  *  You may want to serve different repositories on different ports so you can
     control them differently with, for example, HTTP reverse proxies or
     [https://man.openbsd.org/pf.4|pf(4)].

To run multiple fossil daemons, create multiple files in /etc/rc.d, and
enable each of them. Here are two approaches for creating
the files in /etc/rc.d: Symbolic links and copies.

<h3>Symbolic links</h3>

Suppose you want to run one fossil daemon as user "user1" on port 8881
and another as user "user2" on port 8882. Create the files with
[https://man.openbsd.org/ln.1|ln(1)], and configure them to run different
fossil commands.

<pre>
cd /etc/rc.d
ln -s fossil fossil1
ln -s fossil fossil2
rcctl enable fossil1 fossil2
rcctl set fossil1 user user1
rcctl set fossil2 user user2
rcctl set fossil1 flags 'server /home/user1/repo1.fossil --port 8881'
rcctl set fossil2 flags 'server /home/user2/repo2.fossil --port 8882'
rcctl start fossil1 fossil2
</pre>

<h3>Copies</h3>

You may want to run fossil daemons that are too different to configure
just with [https://man.openbsd.org/rcctl.8|rcctl(8)].
In particular, you can't change the "pexp" with rcctl.

If you want to run fossil commands that are more different,
you may prefer to create separate files in /etc/rc.d.
Replace "ln -s" above with "cp" to accomplish this.

<pre>
cp /etc/rc.d/fossil /etc/rc.d/fossil-user1
cp /etc/rc.d/fossil /etc/rc.d/fossil-user2
</pre>

You can still use commands like "rcctl set fossil-user1 flags", but you
can also edit the "/etc/rc.d/fossil-user1" file.
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<title>Benefits of a Fossil Server</title>

<h2>No Server Required</h2>

Fossil does not require a central server.
Data sharing and synchronization can be entirely peer-to-peer.
Fossil uses 
[https://en.wikipedia.org/wiki/Conflict-free_replicated_data_type |
conflict-free replicated data types]
to ensure that (in the limit) all participating peers see the same content.

<h2>But, a Server Can Be Useful</h2>

Fossil does not require a server, but a server can be very useful.
Here are a few reasons to set up a Fossil server for your project:

  1.  <b>A server works as a complete project website.</b>

      Fossil does more than just version control.  It also supports
      [../tickets.wiki|trouble-tickets], 
      [../wikitheory.wiki|wiki], 
      a [../chat.md|developer chat room], and a [../forum.wiki|forum].
      The [../embeddeddoc.wiki|embedded documentation]
      feature provides  a great mechanism for providing project documentation.
      The [../unvers.wiki|unversioned files] feature is a convenient way
      to host builds and downloads on the project website.

  2.  <b>A server gives developers a common point of rendezvous for
      syncing their work.</b>

      It is possible for developers to synchronize peer-to-peer but
      that requires the developers coordinate the sync, which in turn
      requires that the developers both want to sync at the same moment.
      A server alleviates this time dependency by allowing each developer
      to sync whenever it is convenient. For example, a developer may
      choose to automatically sync
      after each commit and before each update.  Developers all stay
      in sync with each other without having to interrupt each other
      constantly to set up a peer-to-peer sync.

  3.  <b>A server provides project leaders with up-to-date status.</b>

      Project coordinators and BDFLs can click on a link or two at the
      central Fossil server for a project and quickly tell what is
      going on.  They can do this from anywhere — even from their phones
      — without needing to actually sync to the device they are using.

  4.  <b>A server provides automatic off-site backups.</b>

      A Fossil server is an automatic remote backup for all the work
      going into a project. ([../backup.md | Within limits].)
      You can even set up multiple servers at
      multiple sites with automatic synchronization between them for
      added redundancy.  Such a setup means that no work is lost due
      to a single machine failure.

  5.  <b>A server consolidates [https://www.sqlite.org/howtocorrupt.html
      | SQLite corruption risk mitigation] to a single point.</b>

      The concerns in section 1 of that document assume you have direct
      access to the central DB files, which isn't the case when the
      server is remote and secure against tampering.

      Section 2 is about file locking, which concerns disappear when Fossil's
      on the other side of an HTTP boundary and your server is set up
      properly.

      Sections 3.1, 4 thru 6, and 8 apply to all Fossil configurations,
      but setting up a server lets you address the risks
      in a single place. Once a given commit is
      sync'd to the server, you can be reasonably sure any client-side
      corruption can be fixed with a fresh clone. Ultimately, this
      is an argument for off-machine backups, which returns us to reason
      #4 above.

      Sections 3.2 and the entirety of section 7 are no concern with
      Fossil at all, since it's primarily written by the creator and
      primary maintainer of SQLite, so you can be certain Fossil doesn't
      actively pursue coding strategies known to risk database corruption.

      For another take on this topic, see the article
      "[https://sqlite.org/useovernet.html | SQLite Over a Network,
      Caveats and Considerations]". Fossil runs in rollback mode by
      default per recommendation #3 at the end of that article, and a
      Fossil server operates as a network proxy for the underlying
      SQLite repository DB per recommendation #2. This <i>may</i> permit
      you to safely switch it into WAL mode (<b>fossil rebuild --wal</b>)
      depending on the underlying storage used by the server itself.

  6.  <b>A server allows [../caps/ | Fossil's RBAC system] to work.</b>

      The role-based access control (RBAC) system in Fossil only works
      when the remote system is on the other side of an HTTP barrier.
      ([../caps/#webonly | Details].) If you want its benefits, you need
      a Fossil server setup of some kind.
Added www/server/windows/cgi-bin-perm.png.

cannot compute difference between binary files

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cannot compute difference between binary files

Added www/server/windows/cgi-install-iis.png.

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# Serving via IIS + CGI

## This Is Not the Method You Are Looking For

Setting up CGI service under IIS is surprisingly complicated compared to
running Fossil as a CGI under most other operating systems. We recommend
that you use the simpler [reverse proxying method](./iis.md) instead
unless there is some compelling reason why that method cannot work for
you, such as its dependence on non-stock IIS extensions. (Keep in mind
that both extensions it requires are by Microsoft, not third parties!)

Once you’ve got this scheme working, it gives the same benefits as those
listed at the top of the linked-to document.

There is a small benefit you get from using CGI over reverse proxying on
other OSes, which is that the Fossil program only runs briefly in order
to serve each HTTP hit.  Once the request is done, that Fossil instance
shuts back down, releasing all of its resources. You don’t need to keep
a background Fossil HTTP server running full-time to provide CGI-based
Fossil service.

You lose a lot of that benefit on Windows:

1.  It only matters to start with on servers that are highly RAM
    constrained.  (Roughly &le; 128 MiB.)  Our configuration steps below
    assume you’re using the Windows and IIS GUIs, which have RAM
    requirements well in excess of this, making Fossil’s resource
    requirements a drop in the bucket next to them. On the [Azure
    B1s][b1s] virtual machine I used to prepare these instructions, the
    Windows Server Manager GUI kept filling the VM’s 1&nbsp;GiB of RAM
    during feature installation and crashing. I had to upgrade the VM’s
    RAM to 2&nbsp;GiB just to get useful work done!

2.  Process creation on Windows is [much more expensive][cp] than on the
    other OSes Fossil runs on, so the benefits of firing up a Fossil
    executable to process each HTTP request are partially swamped by the
    overhead of doing so.

Therefore, unless you’re willing to replace all of the GUI configuration
steps below with command line equivalents, or shut the GUI down entirely
after configuring IIS, CGI is a much less compelling option on Windows.

**WARNING:** The following tutorial appears to fail with the current
(2019-08-17) version of Fossil, [apparently][fbug] due to an inability
of Fossil to detect that it’s being run in CGI mode.

[b1s]:  https://azure.microsoft.com/en-us/blog/introducing-b-series-our-new-burstable-vm-size/
[cp]:   https://stackoverflow.com/a/48244/142454
[fbug]: https://fossil-scm.org/forum/forumpost/de18dc32c0


## Install IIS with CGI Support

The steps for this are identical to those for the [reverse proxying IIS
setup](./iis.md#install) except that you need to enable CGI in the last
step, since it isn’t installed by default. For Windows Server, the path
is:

![Install CGI in IIS](./cgi-install-iis.png)

The path is similar on the consumer-focused versions of Windows, once
you get to that last step.


## Setup

1.  Install the Fossil executable to `c:\inetpub\wwwroot\bin` on the web
    server. We can’t use an executable you might already have because IIS
    runs under a separate user account, so we need to give that
    executable special permissions, and that’s easiest to do under the
    IIS tree:

    ![IIS fossil.exe execute permission](./cgi-bin-perm.png)

2.  In IIS Manager (a.k.a. `INETMGR`) drill down into the Sites folder
    in the left-side pane and right-click your web site’s
    configuration. (e.g. “Default Web Siteâ€)

3.  On that menu say “Add Virtual Directory.†Give it the alias “`cgi`â€
    and point it at a suitable directory, such as
    “`c:\inetpub\wwwroot\cgi`â€.

4.  Double-click the “Handler Mappings†icon, then in the right-side
    pane, click “Add Script Map...†Apply the following settings:

    ![IIS script map dialog](./cgi-script-map.png)

    The Executable path must point to the path we set up in step 1, not
    to some other `fossil.exe` you may have elsewhere on your system.
    You will need to change the default “`*.dll`†filter in the Open
    dialog to “`*.exe`†in order to see it when browsing via the “`...`â€
    button.

5.  Create a file called `repo.fslcgi` within the CGI directory you
    chose in step 3, with a single line like this:

        repository: c:\Users\SOMEONE\museum\repo.fossil

    Give the actual path to the repository, of course.

6.  Up at the top level of IIS Manager, double-click the “ISAPI and CGI
    Restrictions†icon, then click “Add...†in the right-side pane.
    Give the script you just created permission to execute:

    ![IIS CGI execute permission](./cgi-exec-perm.png)

7.  In the right-side pane, click “Restart†to apply this configuration,
    then test it by visiting the newly-available URL in a browser:

        http://localhost/cgi/repo.fslcgi

For more complicated setups such as “directory†mode, see [the generic
CGI instructions](../any/cgi.md).

*[Return to the top-level Fossil server article.](../)*
Added www/server/windows/iis.md.






































































































































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# Serving via IIS

## Why Bother?

The first part of the scheme below sets Fossil up as an HTTP server, so
you might be wondering why you wouldn’t just modify that to make it
listen on all network interfaces on TCP port 80, so you can avoid the
need for IIS entirely. For simple use cases, you can indeed do without
IIS, but there are several use cases where adding it is helpful:

1.  Proxying Fossil with IIS lets you [add TLS encryption][tls], which
    [Fossil does not currently speak](../../ssl.wiki) in its server role.

2.  The URL rewriting we do below allows Fossil to be part of a larger
    site already being served with IIS.

3.  You can have a mixed-mode site, with Fossil acting as a powerful
    dynamic content management service and IIS as a fast static content
    server.  The pure-Fossil alternative requires that you check all of
    your static content into Fossil as versioned or unversioned
    artifacts.

This article shows how you can get any combination of those benefits by
using IIS as a reverse proxy for `fossil server`.

There are other ways to use IIS to serve Fossil, such as [via
CGI](./cgi.md).


## Background Fossil Service Setup

You will need to have the Fossil HTTP server running in the background,
serving some local repository, bound to localhost on a fixed
high-numbered TCP port. For the purposes of testing, simply start it by
hand in your command shell of choice:

    fossil serve --port 9000 --localhost repo.fossil

That command assumes you’ve got `fossil.exe` in your `%PATH%` and you’re
in a directory holding `repo.fossil`. See [the platform-independent
instructions](../any/none.md) for further details.

For a more robust setup, we recommend that you [install Fossil as a
Windows service](./service.md), which will allow Fossil to start at
system boot, before anyone has logged in interactively.


## <a id="install"></a>Install IIS

IIS might not be installed in your system yet, so follow the path
appropriate to your host OS.  We’ve tested only the latest Microsoft
OSes as of the time of this writing, but the basic process should be
similar on older OSes.


### Windows Server 2019

1.  Start “Server Managerâ€
2.  Tell it you want to “Add roles and featuresâ€
3.  Select “Role-based or feature-based installationâ€
4.  Select your local server
5.  In the Server Roles section, enable “Web Server (IIS)â€

### Windows 

1.  Open Control Panel
2.  Go to “Programsâ€
3.  Select “Turn Windows features on or off†in the left-side pane
4.  In the “Windows Features†dialog, enable “Internet Information
    Servicesâ€

The default set of IIS features there will suffice for this tutorial,
but you might want to enable additional features.


## Setting up the Proxy

The stock IIS setup doesn’t have reverse proxying features, but they’re
easily added through extensions. You will need to install the
[Application Request Routing][arr] and [URL Rewrite][ure] extensions. In
my testing here, URL Rewrite showed up immediately after installing it,
but I had to reboot the server to get ARR to show up. (Yay Windows.)

You can install these things through the direct links above, or you can
do it via the Web Platform Installer feature of IIS Manager (a.k.a.
`INETMGR`).

Set these extensions up in IIS Manager like so:

1.  Double-click the “Application Request Routing Cache†icon.

2.  Right-click in the window that results, and select “Server Proxy
    Settings...â€

3.  Check the “Enable Proxy†box in the dialog. Click the “Apply†text
    in the right-side pane.

4.  Return to the top server-level configuration area of IIS Manager and
    double-click the “URL Rewrite†icon. Alternately, you might find
    “URL Rewrite†in the right-side pane from within the ARR settings.

5.  Right click in the window that results, and click “Add Rule(s)...â€
    Tell it you want a “Blank rule†under “Inbound rulesâ€.

6.  In the dialog that results, create a new rule called “Fossil repo
    proxy.†Set the “Pattern†to “`^(.*)$`†and “Rewrite URL†set to
    “`http://localhost:9000/{R:1}`â€. That tells it to take everything in
    the path part of the URL and send it down to localhost:9000, where
    `fossil server` is listening.

7.  Click “Apply†in the right-side pane, then get back to the top level
    configuration for the server, and click “Restart†in that same pane.

At this point, if you go to `http://localhost/` in your browser, you
should see your Fossil repository’s web interface instead of the default
IIS web site, as before you did all of the above.

This is a very simple configuration. You can do more complicated and
interesting things with this, such as redirecting only `/code` URLs to
Fossil by setting the Pattern in step 6 to “`^/code(.*)$`â€. (You would
also need to pass `--baseurl http://example.com/code` in the `fossil
server` command to make this work properly.) IIS would then directly
serve all other URLs. You could also intermix ASP.NET applications in
the URL scheme in this way.

See the documentation on [URL Rewrite rules][urr] for more ideas.

*[Return to the top-level Fossil server article.](../)*


[arr]: https://www.iis.net/downloads/microsoft/application-request-routing
[tls]: https://docs.microsoft.com/en-us/iis/manage/configuring-security/understanding-iis-url-authorization
[ure]: https://www.iis.net/downloads/microsoft/url-rewrite
[urr]: https://docs.microsoft.com/en-us/iis/extensions/url-rewrite-module/creating-rewrite-rules-for-the-url-rewrite-module
Added www/server/windows/index.md.








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# Using Windows as a Fossil Server

- [Fossil server command](./none.md)
- [Fossil as CGI (IIS)](./iis.md)
- [Fossil as a Service](./service.md)
- [Using stunnel with Fossil on Windows](./stunnel.md)

*[Return to the top-level Fossil server article.](../)*
Added www/server/windows/none.md.





































































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# Serving as a Standalone Server on Windows

On Windows, this method works more or less identically to how it’s
documented in [the generic instructions](../any/none.md).

...but only while `fossil.exe` is actually running, which is the source
of much trouble on Windows. This problem has two halves:


## No App Startup Without Desktop

The easy methods for starting a program in Windows at system start all
require an interactive desktop.  There is no *easy* way to start an arbitrary
program on Windows at boot before anyone has logged in. In Unix
terms, Windows has no simple equivalent to [the `/etc/rc.local` file][rcl].

You can partially get around the first problem by setting your `fossil
server` call up as one of the user’s interactive startup items. Windows
10 has its own [idiosyncratic way of doing this][si10], and in older
systems you have [several alternatives to this][si7]. Regardless of the
actual mechanism, these will cause the Fossil standalone HTTP server to
start on an *interactive desktop login* only. While you’re sitting at
the Windows login screen, the Fossil server is *down*.

[rcl]:  http://nixdoc.net/man-pages/FreeBSD/man8/rc.local.8.html
[si10]: https://www.tenforums.com/tutorials/2944-add-delete-enable-disable-startup-items-windows-10-a.html
[si7]:  https://www.wikihow.com/Change-Startup-Programs-in-Windows-7



## No Simple Background Mode

Windows also lacks a direct equivalent of the Bourne shell’s “`&`†control operator to
run a program in the background, which you can give in Unix’s `rc.local`
file, which is just a normal Bourne shell script.

By “background,†I mean
“not attached to any interactive user’s login session.†When the
`rc.local` script exits in Unix, any program it backgrounded *stays
running*. There is no simple and direct equivalent to this mechanism in
Windows.

If you set `fossil server` to run on interactive login, as above, it
will shut right back down again when that user logs back out.

With Windows 10, it’s especially problematic because you can no longer
make the OS put off updates arbitrarily: your Fossil server will go down
every time Windows Update decides it needs to reboot your computer, and
then Fossil service will *stay* down until someone logs back into that
machine interactively.


## Better Solutions

Because of these problems, we only recommend setting `fossil server` up
on Windows this way when
you’re a solo developer or you work in a small office where everyone
arrives more or less at the same time each day, and everyone goes home
about the same time each day, so that one user can keep the Fossil
server up through the working day.

If your needs go at all beyond this, you should expect proper “serverâ€
behavior, which you can get on Windows by [registering Fossil as a
Windows service](./service.md), which solves the interactive startup and
shutdown problems above, at a bit of complexity over the Startup Items
method. You may also want to consider putting that service behind [an
IIS front-end proxy](./iis.md) to add additional web serving features.

*[Return to the top-level Fossil server article.](../)*
Added www/server/windows/service.md.
























































































































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# Fossil as a Windows Service

If you need Fossil to start automatically on Windows, it is suggested to install
Fossil as a Windows Service.

## Assumptions

1. You have Administrative access to a Windows 2012r2 or above server.
2. You have PowerShell 5.1 or above installed.

## Place Fossil on Server

However you obtained your copy of Fossil, it is recommended that you follow
Windows conventions and place it within `\Program Files\FossilSCM`, the
proper location for the official 64-bit binary.
This way Fossil is at an expected location and you will have minimal issues with
Windows interfering in your ability to run Fossil as a service.  You will need
Administrative rights to place fossil at the recommended location.  If you will
only be running Fossil as a service, you do not need to add this location to the
path, though you may do so if you wish.

## Installing Fossil as a Service

Luckily the hard work to use Fossil as a Windows Service has been done by the
Fossil team.  We simply have to install it with the proper command line options.
Fossil on Windows has a command `fossil winsrv` to allow installing Fossil as a
service on Windows.  This command is only documented on the windows executable
of Fossil.  You must also run the command as administrator for it to be
successful.

### Fossil winsrv Example

The simplest form of the command is:

```
fossil winsrv create --repository D:/Path/to/Repo.fossil
```

This will create a windows service named 'Fossil-DSCM' running under the local
system account and accessible on port 8080 by default.  `fossil winsrv` can also
start, stop, and delete the service.  For all available options, please execute
`fossil help winsrv` on a windows install of Fossil.

If you wish to serve a directory of repositories, the `fossil winsrv` command
requires a slightly different set of options vs. `fossil server`:

```
fossil winsrv create --repository D:/Path/to/Repos --repolist
```

### Choice of Directory Considerations

When the Fossil server will be used at times that files may be locked
during virus scanning, it is prudent to arrange that its directory used
for temporary files is exempted from such scanning. Ordinarily, this
will be a subdirectory named "fossil" in the temporary directory given
by the Windows GetTempPath(...) API, [namely](https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-gettemppathw#remarks)
the value of the first existing environment variable from `%TMP%`, `%TEMP%`,
`%USERPROFILE%`, and `%SystemRoot%`; you can look for their actual values in
your system by accessing the `/test_env` webpage. 
Excluding this subdirectory will avoid certain rare failures where the
fossil.exe process is unable to use the directory normally during a scan.

### <a id='PowerShell'></a>Advanced service installation using PowerShell

As great as `fossil winsrv` is, it does not have one to one reflection of all of
the `fossil server` [options](/help?cmd=server).  When you need to use some of
the more advanced options, such as `--https`, `--skin`, or `--extroot`, you will
need to use PowerShell to configure and install the Windows service.

PowerShell provides the [New-Service](https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/new-service?view=powershell-5.1)
command, which we can use to install and configure Fossil as a service.  The
below should all be entered as a single line in an Administrative PowerShell
console.

```PowerShell
New-Service -Name fossil -DisplayName fossil -BinaryPathName '"C:\Program Files\FossilSCM\fossil.exe" server --port 8080 --repolist "D:/Path/to/Repos"' -StartupType Automatic
```

Please note the use of forward slashes in the repolist path passed to Fossil.
Windows will accept either back slashes or forward slashes in path names, but
Fossil has a preference for forward slashes.  The use of `--repolist` will make
this a multiple repository server.  If you want to serve only a single
repository, then leave off the `--repolist` parameter and provide the full path
to the proper repository file. Other options are listed in the
[fossil server](/help?cmd=server) documentation.

The service will be installed by default to use the Local Service account.
Since Fossil only needs access to local files, this is fine and causes no
issues.  The service will not be running once installed.  You will need to start
it to proceed (the `-StartupType Automatic` parameter to `New-Service` will
result in the service auto-starting on boot).  This can be done by entering

```PowerShell
Start-Service -Name fossil
```

in the PowerShell console.

Congratulations, you now have a base http accessible Fossil server running on
Windows.

### Removing the Windows Service

If you want to remove the Fossil service, execute the following from an
Administrative PowerShell or Command Prompt console:

```
sc.exe delete fossil
```

If you have Powershell version 6.0 or later, you can use:

```PowerShell
Remove-Service -Name fossil
```

with the same effect.

*[Return to the top-level Fossil server article.](../)*
Added www/server/windows/stunnel.md.




























































































































































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# Using stunnel with Fossil on Windows

While there are many ways to configure Fossil as a server using various web
servers (Apache, IIS, nginx, etc.), this document will focus on setting up a
minimal Fossil server using only Fossil's native [server
capabilities](../any/none.md) and [stunnel](https://www.stunnel.org/)
to provide a TLS proxy.  It is recommended for public repositories to go to the
extra step of configuring stunnel to provide a proper HTTPS setup.

## Assumptions

1. You have Administrative access to a Windows 2012r2 or above server.
2. You have PowerShell 5.1 or above installed.
3. You have acquired a certificate either from a Public CA or an Internal CA.

## Configure Fossil Service for https

Due to the need for the `--https` option for successfully using Fossil with
stunnel, we will use [Advanced service installation using PowerShell](./service.md#PowerShell).
We will need to change the command to install the Fossil Service to configure
it properly for use with stunnel as an https proxy.  Run the following:

```PowerShell
New-Service -Name fossil-secure -DisplayName fossil-secure -BinaryPathName '"C:\Program Files\FossilSCM\fossil.exe" server --localhost --port 9000 --https --repolist "D:/Path/to/Repos"' -StartupType Automatic
```

The use of `--localhost` means Fossil will only listen for traffic on the local
host on the designated port - 9000 in this case - and will not respond to
network traffic.  Using `--https` will tell Fossil to generate HTTPS URLs rather
than HTTP ones.

`New-Service` does not automatically start a service on install, so you will
need to enter the following to avoid rebooting the server:

```PowerShell
Start-Service -Name fossil-secure
```

To remove the service, run the following in a Powershell or cmd console:

```
sc.exe delete fossil
```

or (in a Powershell console)

```PowerShell
Remove-Service -Name fossil
```

if your version of Powershell is 6.0 or above.

## Install stunnel 5.55

Download stunnel from the [downloads](https://www.stunnel.org/downloads.html)
page.  Select the latest stunnel windows package (at the time of writing this is
`stunnel-5.55-win64-installer.exe`).  Execute the installer and make sure you
install openSSL tools when you install stunnel.  You will need this to convert
your certificate from PFX to PEM format.

Even though the installer says it is for win64, it installs stunnel by default
to `\Program Files (x86)\stunnel`.

## Get your certificate ready for Stunnel

Whether you use a Public Certificate Authority or Internal Certificate
Authority, the next step is exporting the certificate from Windows into a format
useable by Stunnel.

### Export Certificate from Windows

If your certificate is installed via Windows Certificate Management, you will
need to export the certificate into a usable format.  You can do this either
using the Windows Certificate Management Console, or PowerShell.

#### Certificate Management Console

Start `mmc.exe` as an Administrator.  Select 'File>Add/Remove Snapin', select
'Certificates' from the list, and click 'Add'.  Select 'Computer Account',
'Next', 'Local Computer', and then 'Finish'.  In the Console Root, expand
'Certificates', then 'Personal', and select 'Certificates'.  In the middle pane
find and select your certificate.  Right click the certificate and select
'All Tasks>Export'.  You want to export as PFX the Private Key, include all
certificates in the certification path, and use a password only to secure the
file.  Enter a path and file name to a working directory and complete the
export.

Continue with [Convert Certificate from PFX to PEM](#convert).

#### PowerShell

If you know the Friendly
Name of the Certificate this is relatively easy.  Since you need to export
the private key as well, you must run the following from an Administrative
PowerShell console.

```PowerShell
$passwd = ConvertTo-SecureString -string "yourpassword" -Force -AsPlainText

Get-ChildItem Cert:\LocalMachine\My | Where{$_.FriendlyName -eq "FriendlyName"} |
Export-PfxCertificate -FilePath fossil-scm.pfx -Password $passwd
```

You will now have your certificate stored as a PFX file.

<a id="convert"></a>
### Convert Certificate from PFX to PEM

For this step you will need the openssl tools that were installed with stunnel.

```PowerShell
# Add stunnel\bin directory to path for this session.
$env:PATH += ";${env:ProgramFiles(x86)}\stunnel\bin"
# Export Private Key
openssl.exe pkcs12 -in fossil-scm.pfx -out fossil-scm.key -nocerts -nodes
# Export the Certificate
openssl.exe pkcs12 -in fossil-scm.pfx -out fossil-scm.pem -nokeys
```

Now move `fossil-scm.key` and `fossil-scm.pem` to your stunnel config directory
(by default this should be located at `\Program Files (x86)\stunne\config`).

## stunnel Configuration

Use the reverse proxy configuration given in the generic [Serving via
stunnel document](../any/stunnel.md#proxy). On Windows, the
`stunnel.conf` file is located at `\Program Files (x86)\stunnel\config`.

You will need to modify it to point at the PEM and key files generated
above.

After completing the above configuration restart the stunnel service in Windows
with the following:

```PowerShell
Restart-Service -Name stunnel
```

## Open up port 443 in the Windows Firewall

The following instructions are for the [Windows Advanced
Firewall](https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-firewall/windows-firewall-with-advanced-security).
If you are using a different Firewall, please consult your Firewall
documentation for how to open port 443 for inbound traffic.

The following command should be entered all on one line.

```PowerShell
New-NetFirewallRule -DisplayName "Allow Fossil Inbound" -Description "Allow Fossil inbound on port 443 using Stunnel as TLS Proxy."
  -Direction Inbound -Protocol TCP -LocalPort 443 -Action Allow -Program "C:\Program Files (x86)\Stunnel\bin\stunnel.exe"
```

You should now be able to access your new Fossil Server via HTTPS.


*[Return to the top-level Fossil server article.](../)*
Added www/serverext.wiki.




















































































































































































































































































































































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<title>CGI Server Extensions</title>

<h2>1.0 Introduction</h2>

If you have a [./server/|Fossil server] for your project,
you can add [./aboutcgi.wiki|CGI]
extensions to that server.  These extensions work like
any other CGI program, except that they also have access to the Fossil
login information and can (optionally) leverage the "[./customskin.md|skins]"
of Fossil so that they appear to be more tightly integrated into the project.

An example of where this is useful is the 
[https://sqlite.org/src/ext/checklist|checklist application] on
the [https://sqlite.org/|SQLite] project.  The checklist
helps the SQLite developers track which release tests have passed,
or failed, or are still to be done.  The checklist program began as a
stand-alone CGI which kept its own private user database and implemented
its own permissions and login system and provided its own CSS.  By
converting checklist into a Fossil extension, the same login that works 
for the [https://sqlite.org/src|main SQLite source repository] also works
for the checklist.  Permission to change elements of the checklist
is tied on permission to check-in to the main source repository.  And
the standard Fossil header menu and footer appear on each page of
the checklist.

<h2>2.0 How It Works</h2>

CGI Extensions are disabled by default.
An administrator activates the CGI extension mechanism by specifying
an "Extension Root Directory" or "extroot" as part of the 
[./server/index.html|server setup].
If the Fossil server is itself run as 
[./server/any/cgi.md|CGI], then add a line to the 
[./cgi.wiki#extroot|CGI script file] that says:

<pre>
extroot: <i>DIRECTORY</i>
</pre>

Or, if the Fossil server is being run using the 
"[./server/any/none.md|fossil server]" or
"[./server/any/none.md|fossil ui]" or 
"[./server/any/inetd.md|fossil http]" commands, then add an extra 
"--extroot <i>DIRECTORY</i>" option to that command.

The <i>DIRECTORY</i> is the DOCUMENT_ROOT for the CGI.
Files in the DOCUMENT_ROOT are accessed via URLs like this:

<pre>
https://example-project.org/ext/<i>FILENAME</i>
</pre>

In other words, access files in DOCUMENT_ROOT by appending the filename
relative to DOCUMENT_ROOT to the [/help?cmd=/ext|/ext]
page of the Fossil server.
Files that are readable but not executable are returned as static
content.  Files that are executable are run as CGI.

<h3>2.1 Example #1</h3>

The source code repository for SQLite is a Fossil server that is run
as CGI.  The URL for the source code repository is [https://sqlite.org/src].
The CGI script looks like this:

<verbatim>
#!/usr/bin/fossil
repository: /fossil/sqlite.fossil
errorlog: /logs/errors.txt
extroot: /sqlite-src-ext
</verbatim>

The "extroot: /sqlite-src-ext" line tells Fossil that it should look for
extension CGIs in the /sqlite-src-ext directory.  (All of this is happening
inside of a chroot jail, so putting the document root in a top-level
directory is a reasonable thing to do.)

When a URL like "https://sqlite.org/src/ext/checklist" is received by the
main webserver, it figures out that the /src part refers to the main
Fossil CGI script and so it runs that script.  Fossil gets the remainder
of the URL to work with: "/ext/checklist".  Fossil extracts the "/ext"
prefix and uses that to determine that this a CGI extension request.
Then it takes the leftover "/checklist" part and appends it to the
"extroot" to get the filename "/sqlite-src-ext/checklist".  Fossil finds
that file to be executable, so it runs it as CGI and returns the result.

The /sqlite-src-ext/checklist file is a
[https://wapp.tcl.tk|Wapp program].  The current source code to the
this program can be seen at
[https://www.sqlite.org/src/ext/checklist/3070700/self] and
recent historical versions are available at
[https://sqlite.org/docsrc/finfo/misc/checklist.tcl] with
older legacy at [https://sqlite.org/checklistapp/timeline?n1=all]

There is a cascade of CGIs happening here.  The web server that receives
the initial HTTP request runs Fossil as a CGI based on the
"https://sqlite.org/src" portion of the URL.  The Fossil instance then
runs the checklist sub-CGI based on the "/ext/checklists" suffix.  The
output of the sub-CGI is read by Fossil and then relayed on to the
main web server which in turn relays the result back to the original client.

<h3>2.2 Example #2</h3>

The [https://fossil-scm.org/home|Fossil self-hosting repository] is also
a CGI that looks like this:

<verbatim>
#!/usr/bin/fossil
repository: /fossil/fossil.fossil
errorlog: /logs/errors.txt
extroot: /fossil-extroot
</verbatim>

The extroot for this Fossil server is /fossil-extroot and in that directory
is an executable file named "fileup1" - another [https://wapp.tcl.tk|Wapp]
script.  (The extension mechanism is not required to use Wapp.  You can use
any kind of program you like.  But the creator of SQLite and Fossil is fond
of [https://www.tcl.tk|Tcl/Tk] and so he tends to gravitate toward Tcl-based
technologies like Wapp.)  The fileup1 script is a demo program that lets
the user upload a file using a form, and then displays that file in the reply.
There is a link on the page that causes the fileup1 script to return a copy
of its own source-code, so you can see how it works.

<h2 id="cgi-inputs">3.0 CGI Inputs</h2>

The /ext extension mechanism is an ordinary CGI interface.  Parameters
are passed to the CGI program using environment variables.  The following
standard CGI environment variables are supported:

  *  AUTH_TYPE
  *  AUTH_CONTENT
  *  CONTENT_LENGTH
  *  CONTENT_TYPE
  *  DOCUMENT_ROOT
  *  GATEWAY_INTERFACE
  *  HTTPS
  *  HTTP_ACCEPT
  *  HTTP_ACCEPT_ENCODING
  *  HTTP_COOKIE
  *  HTTP_HOST
  *  HTTP_IF_MODIFIED_SINCE
  *  HTTP_IF_NONE_MATCH
  *  HTTP_REFERER
  *  HTTP_USER_AGENT
  *  PATH_INFO
  *  QUERY_STRING
  *  REMOTE_ADDR
  *  REMOTE_USER
  *  REQUEST_METHOD
  *  REQUEST_SCHEME
  *  REQUEST_URI
  *  SCRIPT_DIRECTORY
  *  SCRIPT_FILENAME
  *  SCRIPT_NAME
  *  SERVER_NAME
  *  SERVER_PORT
  *  SERVER_PROTOCOL
  *  SERVER_SOFTWARE

Do a web search for
"[https://duckduckgo.com/?q=cgi+environment_variables|cgi environment variables]"
to find more detail about what each of the above variables mean and how
they are used.
Live listings of the values of some or all of these environment variables
can be found at links like these:

  *  [https://fossil-scm.org/home/test_env]
  *  [https://sqlite.org/src/ext/checklist/top/env]

In addition to the standard CGI environment variables listed above, 
Fossil adds the following:

  *  FOSSIL_CAPABILITIES
  *  FOSSIL_NONCE
  *  FOSSIL_REPOSITORY
  *  FOSSIL_URI
  *  FOSSIL_USER

The FOSSIL_USER string is the name of the logged-in user.  This variable
is missing or is an empty string if the user is not logged in.  The
FOSSIL_CAPABILITIES string is a list of 
[./caps/ref.html|Fossil capabilities] that
indicate what permissions the user has on the Fossil repository.
The FOSSIL_REPOSITORY environment variable gives the filename of the
Fossil repository that is running.  The FOSSIL_URI variable shows the
prefix of the REQUEST_URI that is the Fossil CGI script, or is an
empty string if Fossil is being run by some method other than CGI.

The [https://sqlite.org/src/ext/checklist|checklist application] uses the
FOSSIL_USER environment variable to determine the name of the user and
the FOSSIL_CAPABILITIES variable to determine if the user is allowed to
mark off changes to the checklist.  Only users with check-in permission
to the Fossil repository are allowed to mark off checklist items.  That
means that the FOSSIL_CAPABILITIES string must contain the letter "i".
Search for "FOSSIL_CAPABILITIES" in the
[https://sqlite.org/src/ext/checklist/top/self|source listing] to see how
this happens.

If the CGI output is one of the forms for which Fossil inserts its own
header and footer, then the inserted header will include a
Content Security Policy (CSP) restriction on the use of javascript within
the webpage.  Any &lt;script&gt;...&lt;/script&gt; elements within the 
CGI output must include a nonce or else they will be suppressed by the
web browser.  The FOSSIL_NONCE variable contains the value of that nonce.
So, in other words, to get javascript to work, it must be enclosed in:

<verbatim>
<script nonce='$FOSSIL_NONCE'>...</script>
</verbatim>

Except, of course, the $FOSSIL_NONCE is replaced by the value of the
FOSSIL_NONCE environment variable.

<h3>3.1 Input Content</h3>

If the HTTP request includes content (for example if this is a POST request)
then the CONTENT_LENGTH value will be positive and the data for the content
will be readable on standard input.


<h2>4.0 CGI Outputs</h2>

CGI programs construct a reply by writing to standard output.  The first
few lines of output are parameters intended for the web server that invoked
the CGI.  These are followed by a blank line and then the content.

Typical parameter output looks like this:

<verbatim>
Status: 200 OK
Content-Type: text/html
</verbatim>

CGI programs can return any content type they want - they are not restricted
to text replies.  It is OK for a CGI program to return (for example)
image/png.

The fields of the CGI response header can be any valid HTTP header fields.
Those that Fossil does not understand are simply relayed back to up the
line to the requester.

Fossil takes special action with some content types.  If the Content-Type
is "text/x-fossil-wiki" or "text/x-markdown" then Fossil
converts the content from [/wiki_rules|Fossil-Wiki] or 
[/md_rules|Markdown] into HTML, adding its
own header and footer text according to the repository skin.  Content
of type "text/html" is normally passed straight through
unchanged.  However, if the text/html content is of the form:

<verbatim>
<div class='fossil-doc' data-title='DOCUMENT TITLE'>
... HTML content there ...
</div>
</verbatim>

In other words, if the outer-most markup of the HTML is a &lt;div&gt;
element with a single class of "fossil-doc", 
then Fossil will adds its own header and footer to the HTML.  The
page title contained in the added header will be extracted from the
"data-title" attribute.

Except for the three cases noted above, Fossil makes no changes or
additions to the CGI-generated content.  Fossil just passes the verbatim
content back up the stack towards the requester.

<h3>4.1 <tt>GATEWAY_INTERFACE</tt> and Recursive Calls to fossil</h3>

Like many CGI-aware applications, if fossil sees the environment
variable <tt>GATEWAY_INTERFACE</tt> when it starts up, it assumes it
is running in a CGI environment and behaves differently than when it
is run in a non-CGI interactive session. If you intend to run fossil
itself from within an extension CGI script, e.g. to run a query
against the repository or simply fetch the fossil binary version, make
sure to <em>unset</em> the <tt>GATEWAY_INTERFACE</tt> environment
variable before doing so, otherwise the invocation will behave as if
it's being run in CGI mode.

<h2>5.0 Filename Restrictions</h2>

For security reasons, Fossil places restrictions on the names of files
in the extroot directory that can participate in the extension CGI
mechanism:

  1.  Filenames must consist of only ASCII alphanumeric characters,
      ".", "_", and "-", and of course "/" as the file separator.
      Files with names that includes spaces or
      other punctuation or special characters are ignored.

  2.  No element of the pathname can begin with "." or "-".  Files or
      directories whose names begin with "." or "-" are ignored.

If a CGI program requires separate data files, it is safe to put those
files in the same directory as the CGI program itself as long as the names
of the data files contain special characters that cause them to be ignored
by Fossil.

<h2>6.0 Access Permissions</h2>

CGI extension files and programs are accessible to everyone.

When CGI extensions have been enabled (using either "extroot:" in the
CGI file or the --extroot option for other server methods) all files
in the extension root directory hierarchy, except special filenames
identified previously, are accessible to all users.  Users do not
have to have "Read" privilege, or any other privilege, in order to
access the extensions.

This is by design.  The CGI extension mechanism is intended to operate
in the same way as a traditional web-server.

CGI programs that want to restrict access 
can examine the FOSSIL_CAPABILITIES and/or FOSSIL_USER environment variables.
In other words, access control is the responsibility of the individual
extension programs.


<h2>7.0 Trouble-Shooting Hints</h2>

Remember that the /ext will return any file in the extroot directory
hierarchy as static content if the file is readable but not executable.
When initially setting up the /ext mechanism, it is sometimes helpful
to verify that you are able to receive static content prior to starting
work on your CGIs.  Also remember that CGIs must be
executable files.

Fossil likes to run inside a chroot jail, and will automatically put
itself inside a chroot jail if it can.  The sub-CGI program will also
run inside this same chroot jail.  Make sure all embedded pathnames
have been adjusted accordingly and that all resources needed by the
CGI program are available within the chroot jail.

If anything goes wrong while trying to process an /ext page, Fossil
returns a 404 Not Found error with no details.  However, if the requester
is logged in as a user that has <b>[./caps/ref.html#D | Debug]</b> capability 
then additional diagnostic information may be included in the output.

If the /ext page has a "fossil-ext-debug=1" query parameter and if
the requester is logged in as a user with Debug privilege, then the
CGI output is returned verbatim, as text/plain and with the original
header intact.  This is useful for diagnosing problems with the
CGI script.
Added www/settings.wiki.





























































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<title>Fossil Settings</title>

<h2>Using Fossil Settings</h2>

Settings control the behaviour of fossil. They are set with the
<tt>fossil settings</tt> command, or through the web interface in
the Settings page in the Admin section.

For a list of all settings, view the Settings page, or type
<tt>fossil help settings</tt> from the command line.


<h3 id="repo">Repository settings</h3>

Settings are set on a per-repository basis. When you clone a repository,
a subset of settings are copied to your local repository.

If you make a change to a setting on your local repository, it is not
synced back to the server when you <tt>push</tt> or <tt>sync</tt>. If
you make a change on the server, you need to manually make the change on
all repositories which are cloned from this repository.

You can also set a setting globally on your local machine. The value
will be used for all repositories cloned to your machine, unless
overridden explicitly in a particular repository. Global settings can be
set by using the <tt>-global</tt> option on the <tt>fossil settings</tt>
command.

<h3 id="versionable">"Versionable" settings</h3>

Most of the settings control the behaviour of fossil on your local
machine, largely acting to reflect your preference on how you want to
use Fossil, how you communicate with the server, or options for hosting
a repository on the web.

However, for historical reasons, some settings affect how you work with
versioned files. These are <tt>clean-glob</tt>, <tt>binary-glob</tt>,
<tt>crlf-glob</tt> (and its alias <tt>crnl-glob</tt>), <tt>empty-dirs</tt>,
<tt>encoding-glob</tt>, <tt>ignore-glob</tt>, <tt>keep-glob</tt>,
<tt>manifest</tt>, and <tt>mimetypes</tt>. The most important is
<tt>ignore-glob</tt> which specifies which files should be ignored when
looking for unmanaged files with the <tt>extras</tt> command.

Because these options can change over time, and the inconvenience of
replicating changes, these settings are "versionable". As well as being
able to be set using the <tt>settings</tt> command or the web interface,
you can create versioned files in the <tt>.fossil-settings</tt>
subdirectory of the check-out root, named with the setting name.
Each file holds the value of a setting, and these files are checked in,
committed, merged, and so on, as with any other file.

Where a setting is a list of values, such as <tt>ignore-glob</tt>, you
can use a newline as a separator as well as a comma.

For example, to set the list of ignored files, create a
<tt>.fossil-settings/ignore-glob</tt> file where each line contains a
glob for ignored files.

If you set the value of a setting using the <tt>settings</tt> command as
well as a versioned file, the versioned setting will take precedence. A
warning will be displayed.
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<title>Deleting Content From Fossil</title>
<h1 align="center">Deleting Content From Fossil</h1>

<h2>Good Reasons for Removing Content from a Fossil Repository</h2>

Fossil is designed to keep all historical content forever.  Users
Fossil is designed to keep all historical content forever. Fossil
of Fossil are discouraged from "deleting" content simply because it
has become obsolete.  Old content is part of the historical record
(part of the "fossil record") and should be maintained indefinitely.  
purposely makes it difficult for users to delete content.  Old content
is part of the project's <i>*ahem*</i> fossil record and should be
maintained indefinitely to maintain an accurate history of the project.
Such is the design intent of Fossil.

Nevertheless, there may occasionally arise legitimate reasons for
deleting content.  Such reasons might include:
deleting content.  Such reasons include:

  *  Spammers have inserted inappropriate content into a wiki page
     or ticket that needs to be removed.
  *  Spammers inserted inappropriate content into a wiki page, forum post,
     or ticket. Fossil lets you easily hide or amend such content, but
     since it is not a legitimate part of the project's history, there
     is no value in keeping it, so it is best removed permanently.

  *  A file that contains trade secrets or that is under copyright
     may have been accidentally committed and needs to be backed
  *  A file that contains trade secrets or that is under someone else's
     copyright was accidentally committed and needs to be backed out.
     out.

  *  A malformed control artifact may have been inserted and is
     disrupting the operation of Fossil.
  *  A malformed control artifact was inserted and is disrupting the
     operation of Fossil.

  *  A legitimate legal request was received requiring content to
     be removed. This would most likely be related to the accidental 
     intellectual property error or spam cases listed above. Some countries 
     recognise software patents, and so allow legal claims targetting code 
     commits. Some countries can require publicly-available encryption 
     software to be taken down if it is committed to the DAG without 
     the correct government authorisation.

<h2>Alternatives</h2>

All of these are rare cases: Fossil is [./antibot.wiki | designed to
foil spammers up front], legally problematic check-ins should range from
rare to nonexistent, and you have to go way out of your way to force
Fossil to insert bad control artifacts. Therefore, before we get to
methods of permanently deleting content from a Fossil repo, let's give
some alternatives that usually suffice, which don't damage the project's
fossil record:

  *  When a forum post or wiki article is "deleted," what actually
     happens is that a new empty version is added to the Fossil repository.
     The web interface interprets this
     as "deleted," but the prior version remains available if you go
     digging for it.
 
  *  When you close a ticket, it's marked in a way that causes it
     to not show up in the normal ticket reports. You usually want to
     give it a Resolution such as "Rejected" when this happens, plus
     possibly a comment explaining why you're closing it. This is all new
     information added to the ticket, not deletion.
 
  *  When you <tt>fossil rm</tt> a file, a new manifest is
     checked into the repository with the same file list as for the prior
     version minus the "removed" file. The file is still present in the
     repository; it just isn't part of that version forward on that
     branch.
 
  *  If you make a bad check-in, you can shunt it off to the side
     by amending it to put it on a different branch, then continuing
     development on the prior branch:
     <br><br>
     <code>$ fossil amend abcd1234 --branch BOGUS --hide<br>
     $ fossil up trunk</code>
     <br><br>
     The first command moves check-in ID <tt>abcd1234</tt> (and any
     subsequent check-ins on that branch!) to a branch called
     <tt>BOGUS</tt>, then hides it so it doesn't show up on the
     timeline. You can call this branch anything you like, and you can
     re-use the same name as many times as you like. No content is
     actually deleted: it's just shunted off to the side and hidden away.
     You might find it easier to do this from the Fossil web UI in
     the "edit" function for a check-in.
     <br><br>
     The second command returns to the last good check-in on that branch
     so you can continue work from that point.
 
  *  When the check-in you want to remove is followed by good
     check-ins on the same branch, you can't use the previous method,
     because it will move the good check-ins, too. The solution is:
     <br><br>
     <tt>$ fossil merge --backout abcd1234</tt>
     <br><br>
     That creates a diff in the check-out directory that backs out the
     bad check-in <tt>abcd1234</tt>. You then fix up any merge conflicts,
     build, test, etc., then check the reverting change into the
     repository. Again, nothing is actually deleted; you're just adding
     more information to the repository which corrects a prior
     check-in.

<h2>Exception: Non-versioned Content</h2>

It is normal and expected to delete data which is not versioned, such as
usernames and passwords in the user table. The [/help/scrub|fossil scrub]
command will remove all sensitive non-versioned data from a repository.

The scrub command will remove user 'bertina', along with their password,
any supplied IP address, any concealed email address etc. However, in the 
DAG, commits by 'bertina' will continue to be visible unchanged even though
there is no longer any such user in Fossil.

<h2>Shunning</h2>

Fossil provides a mechanism called "shunning" for removing content from
a repository.  
a repository.

Every Fossil repository maintains a list of the SHA1 hash names of
Every Fossil repository maintains a list of the hash names of
"shunned" artifacts.
Fossil will refuse to push or pull any shunned artifact.  
Fossil will refuse to push or pull any shunned artifact.
Furthermore, all shunned artifacts (but not the shunning list
itself) are removed from the
repository whenever the repository is reconstructed using the
"rebuild" command.

<h3>Shunning lists are local state</h3>

The shunning list is part of the local state of a Fossil repository.
In other words, shunning does not propagate using the normal "sync"
mechanism.  An artifact can be
In other words, shunning does not propagate to a remote repository
using the normal "sync" mechanism.  An artifact can be
shunned from one repository but be allowed to exist in another.  The fact that
the shunning list does not propagate is a security feature.  If the
shunning list propagated then a malecious user (or
shunning list propagated then a malicious user (or
a bug in the fossil code) might introduce a shun record that would
propagate through all respositories in a network and permanently 
propagate through all repositories in a network and permanently
destroy vital information.  By refusing to propagate the shunning list,
Fossil insures that no remote user will ever be able to remove 
Fossil ensures that no remote user will ever be able to remove
information from your personal repositories without your permission.

The shunning list does not propagate by the normal "sync" mechanism,
The shunning list does not propagate to a remote repository
by the normal "sync" mechanism,
but it is still possible to copy shuns from one repository to another
using the "configuration" command:

    <b>fossil configuration pull shun</b> <i>remote-url</i><br>
    <b>fossil configuration push shun</b> <i>remote-url</i>

The two command above will pull or push shunning lists from or to
The two commands above will pull or push shunning lists from or to
the <i>remote-url</i> indicated and merge the lists on the receiving
end.  "Admin" privilege on the remote server is required in order to
push a shun list.  
push a shun list.  In contrast, the shunning list will be automatically
received by default as part of a normal client "pull" operation unless
disabled by the "<tt>auto-shun</tt>" setting.

Note that the shunning list remains in the respository even after the
Note that the shunning list remains in the repository even after the
shunned artifact has been removed.  This is to prevent the artifact
from being reintroduced into the repository the next time it syncs with
another repository that has not shunned the artifact.

<h3>Managing the shunning list</h3>

The complete shunning list for a repository can be viewed by a user
with "admin" privilege on the "/shunned" URL of the web interface to Fossil.  
with "admin" privilege on the "/shun" URL of the web interface to Fossil.
That URL is accessible under the "Admin" button on the default menu
bar.  Items can be added to or removed from the shunning list.  "Sync"
operations are inhibited as soon as the artifact is added to the
shunning list, but the content of the artifact is not actually removed
from the responstory until the next time the repository is rebuilt.
from the repository until the next time the repository is rebuilt.

When viewing individual artifacts with the web interface, "admin"
users will usually see a "Shun" option in the submenu that will take
them directly to the shunning page and enable that artifact to be
shunned with a single additional mouse click.
Added www/ssl-server.md.




















































































































































































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# SSL/TLS Server Mode

## History

Fossil has supported [client-side SSL/TLS][0] since [2010][1].  This means
that commands like "[fossil sync](/help?cmd=sync)" could use SSL/TLS when
contacting a server.  But on the server side, commands like
"[fossil server](/help?cmd=server)" operated in clear-text only.  To implement
an encrypted server, you had to put Fossil behind a web server or reverse
proxy that handled the SSL/TLS decryption/encryption and passed cleartext
down to Fossil.

[0]: ./ssl.wiki
[1]: /timeline?c=b05cb4a0e15d0712&y=ci&n=13

Beginning in [late December 2021](/timeline?c=f6263bb64195b07f&y=a&n=13),
this has been fixed.  Commands like

  * "[fossil server](/help?cmd=server)"
  * "[fossil ui](/help?cmd=ui)", and
  * "[fossil http](/help?cmd=http)"

now all handle server-mode SSL/TLS encryption natively.  It is now possible
to run a secure Fossil server without having to put Fossil behind an encrypting
web server or reverse proxy.  Hence, it is now possible to stand up a complete
Fossil project website on an inexpensive VPS with no added software other than
Fossil itself and something like [certbot](https://certbot.eff.org) for
obtaining a CA-signed certificate.

## Usage

To put any of the Fossil server commands into SSL/TLS mode, simply
add the "--cert" command-line option.

    fossil ui --cert unsafe-builtin

The --cert option is what tells Fossil to use TLS encryption.
Normally, the argument to --cert is the name of a file containing
the certificate (the "fullchain.pem" file) for the website.  In this
example, the magic name "unsafe-builtin" is used, which causes Fossil
to use a self-signed cert rather than a real cert obtained from a
[Certificate Authority](https://en.wikipedia.org/wiki/Certificate_authority)
or "CA".  As the name implies, this self-signed cert is not secure and
should only be used for testing.  Your web-browser will complain bitterly 
and will refuse to display the pages using the "unsafe-builtin" cert.
Firefox will allow you to click an "I know the risks" button and continue.
Other web browsers will stubornly refuse to display the page, under the theory
that weak encryption is worse than no encryption at all.  Continue reading
to see how to solve this.

## About Certs

Certs are based on public-key or asymmetric cryptography.  To create a cert,
you first create a new "key pair" consisting of a public key and a private key.
The public key can be freely shared with the world, but you must keep the
private key secret.  If anyone gains access to your private key then he will be
able to impersonate you and break into your system.

To obtain a cert, you send your public key and the name of the domain you
want to protect to a certificate authority.  The CA then digitally signs
the combination of those two things using their own private key and sends
the signed combination back to you.  The CA's digital signature of your
public key and domain name is the cert.

SSL/TLS servers need two things in order to prove their identity to clients:

  1.  The cert that was signed by a CA
  2.  The private key

The SSL/TLS servers send the cert to each client, so that the client
can verify it.  But the private key is kept strictly private and is never
shared with anyone.

## How To Tell Fossil About Your Cert And Private Key

If you do not have your own cert and private key, you can ask Fossil
to use "unsafe-builtin", which is a self-signed cert that is built into
Fossil.  This is wildly insecure, since the private key is not really private - 
it is [in plain sight](/info/c2a7b14c3f541edb96?ln=89-116) in the Fossil
source tree for anybody to read.  <b>Never add the private key that is
built into Fossil to your OS's trust store</b> as doing so will severely
compromise your computer.  The built-in cert is only useful for testing.
If you want actual security, you will need to come up with your own private
key and cert.

Fossil wants to read certs and public keys in the 
[PEM format](https://en.wikipedia.org/wiki/Privacy-Enhanced_Mail).
PEM is a pure ASCII text format.  The private key consists of text
like this:

    -----BEGIN PRIVATE KEY-----
    *base-64 encoding of the private key*  
    -----END PRIVATE KEY-----

Similarly, a PEM-encoded cert will look like this:

    -----BEGIN CERTIFICATE-----
    *base-64 encoding of the certificate*  
    -----END CERTIFICATE-----

In both formats, text outside of the delimiters is ignored.  That means
that if you have a PEM-formatted private key and a separate PEM-formatted
certificate, you can concatenate the two into a single file and the
individual components will still be easily accessible.

If you have a single file that holds both your private key and your
cert, you can hand it off to the "[fossil server](/help?cmd=server)"
command using the --cert option.  Like this:

    fossil server --port 443 --cert mycert.pem /home/www/myproject.fossil

The command above is sufficient to run a fully-encrypted web site for
the "myproject.fossil" Fossil repository.  This command must be run as
root, since it wants to listen on TCP port 443, and only root processes are
allowed to do that.  This is safe, however, since before reading any
information off of the wire, Fossil will put itself inside a chroot jail
at /home/www and drop all root privileges.

### Keeping The Cert And Private Key In Separate Files

If you do not want to combine your cert and private key into a single
big PEM file, you can keep them separate using the --pkey option to
Fossil.

    fossil server --port 443 --cert fullchain.pem --pkey privkey.pem /home/www/myproject.fossil

## The ACME Protocol

The [ACME Protocol][2] is used to prove to a CA that you control a
website.  CAs require proof that you control a domain before they
will issue a cert for that domain.  The usual means of dealing
with ACME is to run the separate [certbot](https://certbot.eff.org) tool.
Here is, in a nutshell, what certbot will do to obtain your cert:

  1.  Certbot sends your "signing request" (the document that contains
      your public key and your domain name) to the CA.

  2.  After receiving the signing request, the CA needs to verify that you
      control the domain of the cert.  To do this (or, one common
      way of doing this, at least) the CA sends a secret token back to
      certbot through a secure backchannel, and instructs certbot to make
      that token accessible on the (unencrypted, ordinary "http:") web site
      for the domain in a particular file under the ".well-known" subdirectory.

  3.  Certbot puts the token where the CA requested it, then notifies the
      CA that it is there.

  4.  The CA accesses the token to confirm that you do indeed control the
      website.  It then creates the cert and sends it back to certbot.

  5.  Certbot stores your cert and deletes the ".well-known" token.

In order for all of this to happen, certbot needs to be able to create
a subdirectory named ".well-known", within a directory you specify, and
then populate that subdirectory with a token file of some kind.  To support
this, the "[fossil server](/help?cmd=server)" and
"[fossil http](/help?cmd=http)" commands have the --acme option.
When the --acme option is specified and Fossil sees a URL where the path
begins with ".well-known", then instead of doing its normal processing, it
looks for a file with that pathname and returns it to the client.  If
the "server" or "http" command is referencing a single Fossil repository,
then the ".well-known" sub-directory should be in the same directory as
the repository file.  If the "server" or "http" command are run against
a directory full of Fossil repositories, then the ".well-known" sub-directory
should be in that top-level directory.

Thus, to set up a project website, you should first run Fossil in ordinary
unencrypted HTTP mode like this:

    fossil server --port 80 --acme /home/www/myproject.fossil

Then you create your public/private key pair and run certbot, giving it
a --webroot of /home/www.  Certbot will create the sub-directory
named "/home/www/.well-known" and put token files there, which the CA
will verify.  Then certbot will store your new cert in a particular file.

Once certbot has obtained your cert, then you can concatenate that
cert with your private key and run Fossil in SSL/TLS mode as shown above.

[2]: https://en.wikipedia.org/wiki/Automated_Certificate_Management_Environment
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<title>Securing a Repository with TLS</title>

<h2>Using TLS-Encrypted Communications with Fossil</h2>

If you are storing sensitive information in a repository accessible over
a network whose integrity you do not fully trust, you should use TLS to
encrypt all communications with it. This is most true for repositories
accessed over the Internet, especially if they will be accessed from
edge networks you do not control, since that admits of various forms of
[https://en.wikipedia.org/wiki/Man-in-the-middle_attack|man in the
middle attack].

TLS protects the credentials used to access the server, prevents
eavesdropping, prevents in-flight data modification, prevents server
identify spoofing, and more.

There are two major aspects to this, both of which have to be addressed
in different ways. Those are the subjects of the next two major
sections.


<h2 id="client">Client-Side Configuration</h2>

You can build Fossil against [https://www.openssl.org/ |
OpenSSL] to allow it to clone and sync with a remote
Fossil repository via <tt>https</tt> URIs.


<h3 id="openssl-bin">Building Against OpenSSL Automatically</h3>

The <tt>configure</tt> script will attempt to find OpenSSL on your
system automatically. It first tries asking the <tt>pkg-config</tt>
system where the OpenSSL development files are, and if that fails, it
falls back to looking through a list of likely directories.

If it can't find the files it needs, the most common solution is to
install the OpenSSL development package on your system via your OS's
package manager. Examples:

  *  <b>RHEL & Fedora</b>: <tt>sudo dnf install openssl-devel</tt>
  *  <b>Debian & Ubuntu</b>: <tt>sudo apt install libssl-dev</tt>
  *  <b>FreeBSD</b>: <tt>su -c 'pkg install openssl'</tt>
  *  <b>macOS</b>: <tt>sudo brew install openssl</tt>
  *  <b>Cygwin</b>: Install <tt>openssl-devel</tt> via Cygwin's
     <tt>setup-*.exe</tt> program

The macOS case requires explanation. Apple last shipped OpenSSL
develpoment files in OS X 10.6 (Snow Leopard), choosing to deprecate it
from that point forward. (Apple wants you to use their proprietary
platform-specific encryption methods instead.) Since macOS has no
built-in package manager, a number have sprung up out of the FOSS world.
It is not known to this author whether Fossil's current build system can
find OpenSSL as installed with any of these other package managers, so
unless you have a particular reason to avoid it, we recomend that you
use [https://brew.sh|Homebrew] on macOS to install OpenSSL as above.
Fossil's build system will seek it out and use it automatically.


<h3 id="openssl-src">Building Against a Non-Platform Version of
OpenSSL</h3>

The Fossil build system has a few other methods for finding OpenSSL when
the automatic methods fail or when you'd prefer that Fossil use a
different version of OpenSSL than the one Fossil's build system picks on
its own.

A good reason to do this is when the Fossil build system finds a
functioning version of OpenSSL which is nevertheless unsuitable. One
common case is that your OS is sufficiently outdated that the platform
version of OpenSSL can no longer communicate with remote systems
adhering to the latest advice on secure communications. An old OpenSSL
might not support any of the
[https://en.wikipedia.org/wiki/Cipher_suite|cipher suites] the remote
Fossil repository's HTTPS proxy is willing to offer, for example, so
that even though both sides are speaking a variant of TLS/SSL, the peers
cannot come to an agreement on the cryptography.

If you've installed the OpenSSL development files somewhere that
Fossil's build system cannot find on its own, you can clue it in by
passing the <tt>--with-openssl</tt> option to the <tt>configure</tt>
script. Type <tt>./configure --help</tt> for details.

Another option is to download the source code to OpenSSL and build
Fossil against that private version of OpenSSL:

<pre>
cd compat             # relative to the Fossil source tree root
tar xf /path/to/openssl-*.tar.gz
ln -fs openssl-x.y.z openssl
cd openssl
./config              # or, e.g. ./Configure darwin64-x86_64-cc
make -j11
cd ../..
./configure --with-openssl=tree
make -j11
</pre>

That will get you a Fossil binary statically linked to this in-tree
version of OpenSSL.

Beware, taking this path typically opens you up to new problems, which
are conveniently covered in the next section!


<h3 id="certs">Certificates</h3>

To verify the identify of a server, TLS uses
[https://en.wikipedia.org/wiki/X.509#Certificates|X.509 certificates], a
scheme that depends on a trust hierarchy of so-called
[https://en.wikipedia.org/wiki/Certificate_authority | Certificate
Authorities]. The tree of trust relationships ultimately ends in the
CA roots, which are considered the ultimate arbiters of who to trust in
this scheme.

The question then is, what CA roots does Fossil trust?

If you are using a self-signed certificate, Fossil will initially not
know that it can trust your certificate, so you'll be asked if you want
to accept the certificate the first time you communicate with the
server. Verify the certificate fingerprint is correct, then answer
"always" if you want Fossil to remember your decision.

If you are cloning from or syncing to Fossil servers that use a
certificate signed by a well-known CA or one of its delegates, Fossil
still has to know which CA roots to trust. When this fails, you get an
error message that looks like this:

<pre>
Unable to verify SSL cert from fossil-scm.org
  subject: CN = sqlite.org
  issuer:  C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3
  sha256:  bf26092dd97df6e4f7bf1926072e7e8d200129e1ffb8ef5276c1e5dd9bc95d52
accept this cert and continue (y/N)?
</pre>

In older versions, the message was much longer and began with this line:

<pre>
SSL verification failed: unable to get local issuer certificate
</pre>

Fossil relies on the OpenSSL library to have some way to check a trusted
list of CA signing keys. There are two common ways this fails:

  #  The OpenSSL library Fossil is linked to doesn't have a CA
     signing key set at all, so that it initially trusts no certificates
     at all.

  #  The OpenSSL library does have a CA cert set, but your Fossil server's
     TLS certificate was signed by a CA that isn't in that set.

A common reason to fall into the second trap is that you're using
certificates signed by a local private CA, as often happens in large
enterprises.  You can solve this sort of problem by getting your local
CA's signing certificate in PEM format and pointing OpenSSL at it:

<pre>
fossil set --global ssl-ca-location /path/to/local-ca.pem
</pre>

The use of <tt>--global</tt> with this option is common, since you may
have multiple repositories served under certificates signed by that same
CA. However, if you have a mix of publicly-signed and locally-signed
certificates, you might want to drop the <tt>--global</tt> flag and set
this option on a per-repository basis instead.

A common way to run into the broader first problem is that you're on
FreeBSD, which does not install a CA certificate set by default, even as
a dependency of the OpenSSL library.  If you're using a certificate
signed by one of the major public CAs, you can solve this by installing
the <tt>ca_root_nss</tt> package. That package contains the Mozilla NSS
certificate bundle, which gets installed in a location that OpenSSL
checks by default, so you don't need to change any Fossil settings.
(This is the same certificate set that ships with Firefox, by the way.)

The same sort of thing happens with the Windows build of OpenSSL, but
for a different core reason: Windows does ship with a stock CA
certificate set, but it's not in a format that OpenSSL understands how
to use.  Rather than try to find a way to convert the data format, you
may find it acceptable to use the same Mozilla NSS cert set.  I do not
know of a way to easily get this from Mozilla themselves, but I did find
a [https://curl.se/docs/caextract.html | third party source] for the
<tt>cacert.pem</tt> file. I suggest placing the file into your Windows
user home directory so that you can then point Fossil at it like so:

<pre>
fossil set --global ssl-ca-location %userprofile%\cacert.pem
</pre>

This can also happen if you've linked Fossil to a version of OpenSSL
[#openssl-src|built from source]. That same <tt>cacert.pem</tt> fix can
work in that case, too.

<blockquote>
OpenSSL 3.2.0 or greater is able to use the stock CA certificates
managed by Windows, and Fossil 2.25 (still in development as of
2024-07-15) takes advantage of this feature. This <em>possibly</em>
eliminates the need to manually install the Mozilla certificate package,
for example when connecting to Fossil servers secured by the widely-used
Let's Encrypt certificates. Run the following command to check if the
feature is supported:

<pre>
fossil tls-config show -v
</pre>

(See the "OpenSSL-winstore" section, requires Fossil 2.25 or greater.)
</blockquote>

When you build Fossil on Linux platforms against the binary OpenSSL
package provided with the OS, you typically get a root cert store along
with the platform OpenSSL package, either built-in or as a hard
dependency.


<h4>Client-Side Certificates</h4>

You can also use client side certificates to add an extra layer of
authentication, over and above Fossil's built in user management. If you
are particularly paranoid, you'll want to use this to remove the ability
of anyone on the internet from making any request to Fossil. Without
presenting a valid client side certificate, the web server won't invoke
the Fossil CGI handler.

Configure your server to request a client side certificate, and set up a
certificate authority to sign your client certificates. For each person
who needs to access the repository, create a private key and certificate
signed with that CA.

The PEM encoded private key and certificate should be stored in a single
file, simply by concatenating the key and certificate files. Specify the
location of this file with the <tt>ssl-identity</tt> setting, or the
<tt>--ssl-identity</tt> option to the <tt>clone</tt> command.

If you've password protected the private key, the password will be
requested every time you connect to the server. This password is not
stored by fossil, as doing so would defeat the purpose of having a
password.

If you attempt to connect to a server which requests a client
certificate, but don't provide one, fossil will show an error message
which explains what to do to authenticate with the server.


<h2 id="server">Server-Side Configuration</h2>

Before Fossil's built-in HTTP server gained [./ssl-server.md | TLS support],
system administrators that wanted to add this
had to put it behind a reverse proxy that would do the translation.
Since advantages remain for delegating TLS to another layer in the
stack, instructions for doing so continue to be included in our
documentation, such as:

  *  <a id="stunnel"  href="./server/any/stunnel.md">Serving via stunnel</a>
  *  <a id="althttpd" href="./server/any/althttpd.md">Serving via stunnel + althttpd</a>
  *  <a id="nginx"    href="./server/debian/nginx.md#tls">Serving via SCGI with nginx on Debian</a>


<h2 id="enforcing">Enforcing TLS Access</h2>

To use TLS encryption in cloning and syncing to a remote Fossil
repository, be sure to use the <tt>https:</tt> URI scheme in
<tt>clone</tt> and <tt>sync</tt> commands.  If your server is configured
to serve the repository via both HTTP and HTTPS, it's easy to
accidentally use unencrypted HTTP if you forget the all-important 's'.

As of Fossil 2.9, using an <tt>http://</tt> URI with <tt>fossil
clone</tt> or <tt>sync</tt> on a site that forwards to HTTPS will cause
Fossil to remember the secure URL. However, there's a
[https://en.wikipedia.org/wiki/Trust_on_first_use | TOFU problem] with
this: it's still better to use <tt>https://</tt> from the start.

As of Fossil 2.8, there is a setting in the Fossil UI under Admin &rarr;
Access called "Redirect to HTTPS," which is set to "Off" by default.
Changing this only affects web UI access to the Fossil repository. It
doesn't affect clones and syncs done via the <tt>http</tt> URI scheme.

In Fossil 2.7 and earlier, there was a much weaker form of this setting
affecting the <tt>/login</tt> page only. If you're using this setting,
you should migrate to the new setting as soon as possible, because the
old setting allows multiple ways of defeating it.

<b id="rloop">WARNING:</b> Enabling HTTPS redirects at the Fossil repo
level while running Fossil behind an HTTPS proxy can result in an
infinite redirect loop.  It happens when the proxy mechanism presents
"<tt>http</tt>" URIs to Fossil, so Fossil issues a redirect, so the browser
fetches the page again, causing Fossil to see an "<tt>http</tt>" URI again, so
it issues a redirect...'round and 'round it goes until the web browser
detects it's in a redirect loop and gives up. This problem prevents you
from getting back into the Admin UI to fix it, but there are several
ways to fix it:

  #  <b>Reset via CLI.</b> You can turn the setting back off from the
     CLI with the command "<tt>fossil -R /path/to/repo.fossil set
     redirect-to-https 0</tt>". (Currently doesn't work.)

  #  <b>Backup first.</b> This setting is stored in the Fossil
     repository, so if you make a backup first <i>on the server</i>, you
     can restore the repo file if enabling this feature creates a
     redirect loop.

  #  <b>Download, fix, and restore.</b> You can copy the remote
     repository file down to a local machine, use <tt>fossil ui</tt> to
     fix the setting, and then upload it to the repository server
     again.

It's best to enforce TLS-only access at the front-end proxy level
anyway. It not only avoids the problem entirely, it can be significantly
more secure.  The [./server/debian/nginx.md#tls | nginx-on-Debian proxy guide] shows one way
to achieve this.


<h2>Terminology Note</h2>

This document is called <tt>ssl.wiki</tt> for historical reasons. The
TLS protocol was originally called SSL, and it went through several
revisions before being replaced by TLS. Years before this writing, SSL
finally became entirely obsolete due to weaknesses in the protocol fixed
in the later TLS series of protocols.

Some people still use the term "SSL" when they actually mean "TLS," but
in the Fossil project, we always use "TLS" except when we must preserve
some sort of historical compatibility, as with this document's name in
order to avoid broken external URLs.  The Fossil TLS-related settings
also often use "<tt>ssl</tt>" in their names for the same reason.

This series of protocols is also called "HTTPS" after the URI scheme
used to specify "HTTP over TLS."
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<title>Fossil Performance</title>
<h1 align="center">Performance Statistics</h1>

The questions will inevitably arise:  How does Fossil perform? 
The questions will inevitably arise:  How does Fossil perform?
Does it use a lot of disk space or bandwidth?  Is it scalable?

In an attempt to answers these questions, this report looks at five
In an attempt to answer these questions, this report looks at several
projects that use fossil for configuration management and examines how
well they are working.  The following table is a summary of the results.
(Last updated on 2018-06-04.)
Explanation and analysis follows the table.

<table border=1>
<table>
<tr>
<th>Project</th>
<th>Number Of Artifacts</th>
<th>Number Of Check-ins</th>
<th>Project&nbsp;Duration<br>(as of 2009-08-23)</th>
<th>Project&nbsp;Duration<br>(as of 2018-06-04)</th>
<th>Average Check-ins Per Day</th>
<th>Uncompressed Size</th>
<th>Repository Size</th>
<th>Compression Ratio</th>
<th>Clone Bandwidth</th>
</tr>

<tr align="center">
<td>[http://www.sqlite.org/src/timeline | SQLite]
<td>SQLite
<td>28643
<td>6755
<td>3373&nbsp;days<br>9.24&nbsp;yrs
<td>2.00
<td>1.27&nbsp;GB
<td>35.4&nbsp;MB
<td>35:1
<td>982&nbsp;KB&nbsp;up<br>12.4&nbsp;MB&nbsp;down
<td>77492
<td>20686
<td>6580&nbsp;days<br>18.02&nbsp;years
<td>5.6&nbsp;GB
<td>70.0&nbsp;MB
<td>80:1
<td>51.1&nbsp;MB
</tr>

<tr align="center">
<td>[http://core.tcl.tk/tcl/timeline | TCL]
<td>161991
<td>23146
<td>7375&nbsp;days<br>20.19&nbsp;years
<td>8.0&nbsp;GB
<td>222.0&nbsp;MB
<td>36:1
<td>150.5&nbsp;MB
</tr>

<tr align="center">
<td>Fossil
<td>4981
<td>1272
<td>764&nbsp;days<br>2.1&nbsp;yrs
<td>1.66
<td>144&nbsp;MB
<td>[/timeline | Fossil]
<td>39148
<td>11266
<td>3971&nbsp;days<br>10.87&nbsp;years
<td>3.8&nbsp;GB
<td>42.0&nbsp;MB
<td>8.74&nbsp;MB
<td>16:1
<td>128&nbsp;KB&nbsp;up<br>4.49&nbsp;MB&nbsp;down
<td>90:1
<td>27.4&nbsp;MB
</tr>

<tr align="center">
<td>SLT
<td>2062
<td>67
<td>266&nbsp;days
<td>0.25
<td>1.76&nbsp;GB
<td>147&nbsp;MB
<td>11:1
<td>[http://www.sqlite.org/slt/timeline | SLT]
<td>2384
<td>169
<td>3474&nbsp;days<br>9.51&nbsp;years
<td>2.1&nbsp;GB
<td>145.9&nbsp;MB
<td>14:1
<td>143.4&nbsp;MB
<td>1.1&nbsp;MB&nbsp;up<br>141&nbsp;MB&nbsp;down
</tr>

<tr align="center">
<td>TH3
<td>1999
<td>429
<td>331&nbsp;days
<td>[http://www.sqlite.org/th3.html | TH3]
<td>12406
<td>3718
<td>3539&nbsp;days<br>9.69&nbsp;years
<td>1.30
<td>70.5&nbsp;MB
<td>6.3&nbsp;MB
<td>11:1
<td>55&nbsp;KB&nbsp;up<br>4.66&nbsp;MB&nbsp;down
<td>544&nbsp;MB
<td>18.0&nbsp;MB
<td>30:1
<td>14.7&nbsp;MB
</tr>

<tr align="center">
<td>SQLite Docs
<td>1787
<td>444
<td>650&nbsp;days<br>1.78&nbsp;yrs
<td>[http://www.sqlite.org/docsrc/timeline | SQLite Docs]
<td>8752
<td>2783
<td>3857&nbsp;days<br>10.56&nbsp;years
<td>0.68
<td>43&nbsp;MB
<td>4.9&nbsp;MB
<td>8:1
<td>46&nbsp;KB&nbsp;up<br>3.35&nbsp;MB&nbsp;down
<td>349.9&nbsp;MB
<td>16.3&nbsp;MB
<td>21:1
<td>13.57&nbsp;MB
</tr>

</table>

<h2>The Five Projects</h2>

The five projects listed above were chosen because they have been in
existance for a long time (relative to the age of fossil) or because
they have larges amounts of content.  The most important project using
fossil is SQLite.  Fossil itself
is built on top of SQLite and so obviously SQLite has to predate fossil.
SQLite was originally versioned using CVS, but recently the entire 9-year
and 320-MB CVS history of SQLite was converted over to Fossil.  This is
an important datapoint because it demonstrates fossil's ability to manage
a significant and long-running project.
The next-longest running fossil project is fossil itself, at 2.1 years.
The documentation for SQLite
(identified above as "SQLite Docs") was split off of the main SQLite 
source tree and into its own fossil repository about 1.75 years ago.
The "SQL Logic Test" or "SLT" project is a massive
collection of SQL statements and their output used to compare the 
processing of SQLite against MySQL, PostgreSQL, Microsoft SQL Server,
and Oracle.  
Finally "TH3" is a proprietary set of test cases for SQLite used to give
100% branch test coverage of SQLite on embedded platforms.  All projects
except for TH3 are open-source.

<h2>Measured Attributes</h2>

In fossil, every version of every file, every wiki page, every change to
In Fossil, every version of every file, every wiki page, every change to
every ticket, and every check-in is a separate "artifact".  One way to
think of a fossil project is as a bag of artifacts.  Of course, there is
a lot more than this going on in fossil.  Many of the artifacts have meaning
think of a Fossil project is as a bag of artifacts.  Of course, there is
a lot more than this going on in Fossil.  Many of the artifacts have meaning
and are related to other artifacts.  But at a low level (for example when
synchronizing two instances of the same project) the only thing that matters
is the unordered collection of artifacts.  In fact, one of the key 
characteristics of fossil is that the entire project history can be
is the unordered collection of artifacts.  In fact, one of the key
characteristics of Fossil is that the entire project history can be
reconstructed simply by scanning the artifacts in an arbitrary order.

The number of check-ins is the number of times that the "commit" command
has been run.  A single check-in might change a 3 or 4 files, or it might
change several dozen different files.  Regardless of the number of files
has been run.  A single check-in might change 3 or 4 files, or it might
change dozens or hundreds of files.  Regardless of the number of files
changed, it still only counts as one check-in.

The "Uncompressed Size" is the total size of all the artifacts within
the fossil repository assuming they were all uncompressed and stored 
the repository assuming they were all uncompressed and stored
separately on the disk.  Fossil makes use of delta compression between related
versions of the same file, and then uses zlib compression on the resulting
deltas.  The total resulting repository size is shown after the uncompressed
size.  
size.

On the right end of the table, we show the "Clone Bandwidth".  This is the
total number of bytes sent from client to server ("uplink") and from server
back to client ("downlink") in order to clone a repository.  These byte counts
include HTTP protocol overhead.
total number of bytes sent from server back to the client.  The number of
bytes sent from client to server is negligible in comparison.
These byte counts include HTTP protocol overhead.

In the table and throughout this article,
"GB" means gigabytes (10<sup><small>9</small></sup> bytes)
not <a href="http://en.wikipedia.org/wiki/Gibibyte">gibibytes</a>
(2<sup><small>30</small></sup> bytes).  Similarly, "MB" and "KB"
means megabytes and kilobytes, not mebibytes and kibibytes.

<h2>Analysis And Supplimental Data</h2>
<h2>Analysis And Supplemental Data</h2>

Perhaps the two most interesting datapoints in the above table are SQLite
Perhaps the two most interesting data points in the above table are SQLite
and SLT.  SQLite is a long-running project with long revision chains.
Some of the files in SQLite have been edited close to a thousand times.
Some of the files in SQLite have been edited over a thousand times.
Each of these edits is stored as a delta, and hence the SQLite project
gets excellent 35:1 compression.  SLT, on the other hand, consists of
gets excellent 80:1 compression.  SLT, on the other hand, consists of
many large (megabyte-sized) SQL scripts that have one or maybe two
versions.  There is very little delta compression occurring and so the
edits each.  There is very little delta compression occurring and so the
overall repository compression ratio is much lower.  Note also that
quite a bit more bandwidth is required to clone SLT than SQLite.

For the first nine years of its development, SQLite was versioned by CVS.
The resulting CVS repository measured over 320MB in size.  So, the
developers were
pleasently surprised to see that this entire project could be cloned in
fossil using only about 13MB of network traffic.  The "sync" protocol
developers were surprised to see that the equivalent Fossil project (the
first nine years on SQLite) would clone with only 13MB of bandwidth.
The "sync" protocol
used by fossil has turned out to be surprisingly efficient.  A typical
check-in on SQLite might use 3 or 4KB of network bandwidth total.  Hardly
worth measuring.  The sync protocol is efficient enough that, once cloned,
fossil could easily be used over a dial-up connection.
check-in on SQLite might use 3 or 4KB of network bandwidth.
For example, the [04eef9522386a59e] check-in used a single HTTP request
of 2099 bytes and got back a reply of 1116 bytes.
The sync protocol is efficient enough that, once cloned,
Fossil can easily be used over a dial-up connection.
Added www/style.wiki.































































































































































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<title>Coding Style</title>

Fossil source code should follow the style guidelines below.

<em> The Fossil source tree includes a few files taken from external
sources
(examples: [https://github.com/antirez/linenoise|linenoise] and
[http://zlib.net/|zLib])
and this externally sourced code might not comply with these style guidelines.
</em>

<b>1. General points</b>:

<ol>
  <li value=10>  No line of code exceeds 80 characters in length.  (Occasional
       exceptions are made for HTML text on @-lines.)

  <li>  There are no tab characters.

  <li>  Line terminators are \n only.  Do not use a \r\n line terminator.

  <li>  2-space indentation is used.  Remember:  No tabs.

  <li>  Comments contain no spelling or grammatical errors.  (Abbreviations
       and sentence fragments are acceptable when trying to fit a comment
       on a single line as long as the meaning is clear.)

  <li>  The tone of comments is professional and courteous.  Comments
       contain no profanity, obscenity, or innuendo.

  <li>  All C-code conforms to ANSI C-89.
        Three well-defined existing exceptions are:
    <ol type="a">

      <li>  -Wno-overlength-strings: The Fossil build system converts (some of the) source code comments
        into strings, which may exceed the 509 character limit defined by ANSI.
        (example: bld/page_index.h)

      <li>  -Wno-long-long: Fossil uses the 'long long' integer type, which is not strictly ANSI C-89 (defined in C99).
        The use of 'long long' resolves many problems with 64-bit arithmetics, especially on 32-bit machines.
        (http_ssl.c, sha3.c, shell.c, util.c)

      <li>  alloca(): By default, sqlite3.c was compiled with the -DSQLITE_USE_ALLOCA flag to use the alloca() function.
        This is no longer the case as of 20220119.  alloca() is not considered ANSI C, and normally not
        recommended due to portability issues, but performance and/or memory consumption
        improvement may have been a stronger argument in favor of its usage.
        (sqlite3.c)
     </ol>

  <li>  All comments and identifiers are in English.

  <li>  The program is single-threaded.  Do not use threads.
       (One exception to this is the HTTP server implementation for Windows,
       which we do not know how to implement without the use of threads.)

</ol>

<b>2. C preprocessor macros</b>:

<ol>

  <li value=20>  The purpose of every preprocessor macros is clearly explained in a
       comment associated with its definition.

  <li>  Every preprocessor macro is used at least once.

  <li>  The names of preprocessor macros clearly reflect their use.

  <li>  Assumptions about the relative values of related macros are
       verified by asserts.  Example: <tt>assert(READ_LOCK+1==WRITE_LOCK);</tt>

</ol>


<b>3. Function header comments</b>:

<ol>
  <li value=30>  Every function has a header comment describing the purpose and use
       of the function.

  <li> A function header comment defines the behavior of the function in
       sufficient detail to allow the function to be re-implemented from
       scratch without reference to the original code.

  <li>  Functions that perform dynamic memory allocation (either directly
       or indirectly via subfunctions) say so in their header comments.

</ol>


<b>4. Function bodies</b>:

<ol>
  <li value=40>  The name of a function clearly reflects its purpose.

  <li> Automatic variables are small, not large objects or arrays.  Avoid
       excessive stack usage.

  <li>  The check-list items for functions also apply to major subsections
     within a function.

  <li>  All code subblocks are enclosed in {...}.


  <li> <b>assert() macros are used as follows</b>:
    <ol type="a">

  <li>  Function preconditions are clearly stated and verified by asserts.

  <li>  Invariants are identified by asserts.
    </ol>

</ol>


<b>5. Class (struct) declarations</b>:

<ol>
  <li value=50>  The purpose and use of every class (a.k.a. structure) is clearly defined
     in the header comment of its declaration.

  <li>  The purpose and use of every class member is clearly defined either
     in the header comment of the class declaration or when the member is
     declared or both.

  <li>  The names of class members clearly reflect their use.

  <li>  Invariants for classes are clearly defined.

</ol>

<b>6. Variables and class instances</b>:

<ol>
  <li value=60>  The purpose and use of every variable is defined by a comment at the
     variable definition.

  <li>  The names of variables clearly reflect their use.

  <li>  Related variables have related names. (ex: aSavepoint and nSavepoint.)

  <li>  Variables have minimum practical scope.

  <li>  Automatic variables are small, not large objects or arrays.

  <li>  Constants are "const".

  <li>  Invariants on variables or groups of variables are defined and
     tested by asserts.

  <li>  When a variable that refers to the same value is used within
     multiple scopes, the same name is used in all cases.

  <li>  When variables refer to different values, different names are used
     even when the names are in different scopes.

  <li>  Variable names with wide scope are sufficiently distinctive to allow
     searching for them using grep.
</ol>
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<h1 align="center">The Fossil Sync Protocol</h1>
<title>The Fossil Sync Protocol</title>

<p>Fossil supports commands <b>push</b>, <b>pull</b>, and <b>sync</b>
for transferring information from one repository to another.  The
command is run on the client repository.  A URL for the server repository
is specified as part of the command.  This document describes what happens
This document describes the wire protocol used to synchronize
behind the scenes in order to synchronize the information on the two
repositories.</p>
content between two Fossil repositories.

<h2>1.0 Overview</h2>

<p>The global state of a fossil repository consists of an unordered
collection of artifacts.  Each artifact is identified by its SHA1 hash
expressed as a 40-character lower-case hexadecimal string.
Synchronization is simply the process of sharing artifacts between
servers so that all servers have copies of all artifacts.  Because
The global state of a fossil repository consists of an unordered
[./fileformat.wiki|collection of artifacts].  Each artifact is 
identified by a cryptographic
hash of its content, expressed as a lower-case hexadecimal string.
Synchronization is the process of sharing artifacts between
repositories so that all repositories have copies of all artifacts.  Because
artifacts are unordered, the order in which artifacts are received
at a server is inconsequential.  It is assumed that the SHA1 hashes
of artifacts are unique - that every artifact has a different SHA1 hash.
To a first approximation, synchronization proceeds by sharing lists 
SHA1 hashes of available artifacts, then sharing those artifacts that
are not found on one side or the other of the connection.  In practice,
a repository might contain millions of artifacts.  The list of
SHA1 hashes for this many artifacts can be large.  So optimizations are
employed that usually reduce the number of SHA1 hashes that need to be
shared to a few hundred.</p>
is unimportant.  It is assumed that the hash names
of artifacts are unique - that every artifact has a different hash.
To a first approximation, synchronization proceeds by sharing lists
of hashes for available artifacts, then sharing the content of artifacts
whose names are missing from one side or the other of the connection.
In practice, a repository might contain millions of artifacts.  The list of
hash names for this many artifacts can be large.  So optimizations are
employed that usually reduce the number of hashes that need to be
shared to a few dozen.

<p>Each repository also has local state.  The local state determines
Each repository also has local state.  The local state determines
the web-page formatting preferences, authorized users, ticket formats,
and similar information that varies from one repository to another.
The local state is not transfered by the <b>push</b>, <b>pull</b>,
and <b>sync</b> command, though some local state is transfered during
a <b>clone</b> in order to initialize the local state of the new
repository.  The <b>configuration push</b> and <b>configuration pull</b>
commands can be used to send or receive local state.</p>
The local state is not usually transferred during a sync.  Except,
some local state is transferred during a [/help?cmd=clone|clone]
in order to initialize the local state of the new repository.  Also,
an administrator can sync local state using
the [/help?cmd=configuration|config push] and
[/help?cmd=configuration|config pull]
commands.

<h3 id="crdt">1.1 Conflict-Free Replicated Datatypes</h3>

The "bag of artifacts" data model used by Fossil is apparently an
implementation of a particular
[https://en.wikipedia.org/wiki/Conflict-free_replicated_data_type|Conflict-Free
Replicated Datatype (CRDT)] called a "G-Set" or "Grow-only Set".  The
academic literature on CRDTs only began to appear in about 2011, and
Fossil predates that research by at least 4 years.  But it is nice to
know that theorists have now proven that the underlying data model of
Fossil can provide strongly-consistent replicas using only
peer-to-peer communication and without any kind of central
authority.

If you are already familiar with CRDTs and were wondering if Fossil
used them, the answer is "yes".  We just don't call them by that name.


<h2>2.0 Transport</h2>
<h2 id="transport">2.0 Transport</h2>

<p>All communication between client and server is via HTTP requests.
All communication between client and server is via HTTP requests.
The server is listening for incoming HTTP requests.  The client
issues one or more HTTP requests and receives replies for each
request.</p>
request.

<p>The server might be running as an independent server
using the <b>server</b> command, or it might be launched from
inetd or xinetd using the <b>http</b> command.  Or the server might
be launched from CGI.  The details of how the server is configured
to "listen" for incoming HTTP requests is immaterial.  The important
point is that the server is listening for requests and the client
is the issuer of the requests.</p>
The server might be running as an independent server
using the [/help?cmd=server|"fossil server" command], or it
might be launched from inetd or xinetd using the
["fossil http" command|/help?cmd=http].  Or the server might
be [./server/any/cgi.md|launched from CGI] or from
[./server/any/scgi.md|SCGI].
(See "[./server/|How To Configure A Fossil Server]" for details.)
The specifics of how the server listens
for incoming HTTP requests is immaterial to this protocol.
The important point is that the server is listening for requests and
the client is the issuer of the requests.

A single [/help?cmd=push|push], 
[/help?cmd=pull|pull], or [/help?cmd=sync|sync]
<p>A single push, pull, or sync might involve multiple HTTP requests.
might involve multiple HTTP requests.
The client maintains state between all requests.  But on the server
side, each request is independent.  The server does not preserve
any information about the client from one request to the next.</p>
any information about the client from one request to the next.

Note: Throughout this article, we use the terms "server" and "client"
to represent the listener and initiator of the interaction, respectively.
<h3>2.1 Server Identification</h3>
Nothing in this protocol requires that the server actually be a back-room
processor housed in a datacenter, nor does the client need to be a desktop
or handheld device.  For the purposes of this article "client" simply means
the repository that initiates the conversation and "server" is the repository
that responds.  Nothing more.

<h4 id="https">2.0.1 HTTPS Transport</h4>

HTTPS differs from HTTP only in that the HTTPS protocol is
encrypted as it travels over the wire.  The underlying protocol
is the same.  This document describes only the underlying, unencrypted
messages that go client to server and back to client.
Whether or not those messages are encrypted does not come into play
in this document.

Fossil includes built-in 
[./ssl-server.md|support for HTTPS encryption] in both client and server.

<h4 id="ssh">2.0.2 SSH Transport</h4>

When doing a sync using an "<code>ssh:…</code>" URL, the same HTTP transport protocol
is used.  Fossil simply uses [https://en.wikipedia.org/wiki/Secure_Shell|ssh]
to start an instance of the [/help?cmd=test-http|fossil test-http] command
running on the remote machine.  It then sends HTTP requests and gets back HTTP
replies over the SSH connection, rather than sending and receiving over an
internet socket.  To see the specific "ssh" command that the Fossil client
runs in order to set up a connection, add either of the the "--httptrace" or
"--sshtrace" options to the "fossil sync" command line.

This method is dependent on the remote <var>PATH</var> set by the SSH
daemon, which may not be the same as your interactive shell's
<var>PATH</var> on that same server. It is common to find
<var>$HOME/bin</var> in the latter but not the former, for instance,
leading to failures to sync over <code>ssh:…</code> URLs when you
install the <code>fossil</code> binary in a nonstandard location, as
with

<verbatim>./configure --prefix=$HOME && make install</verbatim>

The simpler of the two solutions to this problem is to install Fossil
where sshd expects to find it, but when that isn't an option, you can
instead give a URL like this:

<verbatim>fossil clone ssh://myserver.example.com/path/to/repo.fossil?fossil=/home/me/bin/fossil</verbatim>

That gives the local Fossil instance the absolute path to the binary on
the remote machine for use when calling that Fossil instance through the
SSH tunnel.

<h4 id="file">2.0.3 FILE Transport</h4>

When doing a sync using a "file:..." URL, the same HTTP protocol is
still used.  But instead of sending each HTTP request over a socket or
via SSH, the HTTP request is written into a temporary file.  The client
then invokes the [/help?cmd=http|fossil http] command in a subprocess
to process the request and and generate a reply.  The client then reads
the HTTP reply out of a temporary file on disk, and deletes the two
temporary files.  To see the specific "fossil http" command that is run
in order to implement the "file:" transport, add the "--httptrace"
option to the "fossil sync" command.

<h3 id="srv-id">2.1 Server Identification</h3>

<p>The server is identified by a URL argument that accompanies the
The server is identified by a URL argument that accompanies the
push, pull, or sync command on the client.  (As a convenience to
users, the URL can be omitted on the client command and the same URL
from the most recent push, pull, or sync will be reused.  This saves
typing in the common case where the client does multiple syncs to
the same server.)</p>
the same server.)

<p>The client modifies the URL by appending the method name "<b>/xfer</b>"
The client modifies the URL by appending the method name "<b>/xfer</b>"
to the end.  For example, if the URL specified on the client command
line is</p>
line is

<blockquote>
http://fossil-scm.hwaci.com/fossil
<pre>https://fossil-scm.org/fossil</pre>
</blockquote>

<p>Then the URL that is really used to do the synchronization will
be:</p>
Then the URL that is really used to do the synchronization will
be:

<blockquote>
http://fossil-scm.hwaci.com/fossil/xfer
<pre>https://fossil-scm.org/fossil/xfer</pre>
</blockquote>

<h3>2.2 HTTP Request Format</h3>
<h3 id="req-format">2.2 HTTP Request Format</h3>

<p>The client always sends a POST request to the server.  The
general format of the POST request is as follows:</p>
The client always sends a POST request to the server.  The
general format of the POST request is as follows:

<blockquote><pre>
<pre>
POST /fossil/xfer HTTP/1.0
Host: fossil-scm.hwaci.com:80
Content-Type: application/x-fossil
Content-Length: 4216
</pre>

<i>content...</i>
<i><pre>content...</pre></i>
</pre></blockquote>

<p>In the example above, the pathname given after the POST keyword
In the example above, the pathname given after the POST keyword
on the first line is a copy of the URL pathname.  The Host: parameter
is also taken from the URL.  The content type is always either
"application/x-fossil" or "application/x-fossil-debug".  The "x-fossil"
content type is the default.  The only difference is that "x-fossil"
content is compressed using zlib whereas "x-fossil-debug" is sent
uncompressed.</p>
uncompressed.

<p>A typical reply from the server might look something like this:</p>
A typical reply from the server might look something like this:

<blockquote><pre>
<pre>
HTTP/1.0 200 OK
Date: Mon, 10 Sep 2007 12:21:01 GMT
Connection: close
Cache-control: private
Content-Type: application/x-fossil; charset=US-ASCII
Content-Length: 265
</pre>

<i>content...</i>
<i><pre>content...</pre></i>
</pre></blockquote>

<p>The content type of the reply is always the same as the content type
of the request.</p>
The content type of the reply is always the same as the content type
of the request.

<h2>3.0 Fossil Synchronization Content</h2>
<h2 id="content">3.0 Fossil Synchronization Content</h2>

<p>A synchronization request between a client and server consists of
A synchronization request between a client and server consists of
one or more HTTP requests as described in the previous section.  This
section details the "x-fossil" content type.</p>
section details the "x-fossil" content type.

<h3>3.1 Line-oriented Format</h3>
<h3 id="lines">3.1 Line-oriented Format</h3>

<p>The x-fossil content type consists of zero or more "cards".  Cards
are separate by the newline character ("\n").  Leading and trailing
whitespace on a card is ignored.  Blank cards are ignored.</p>
The x-fossil content type consists of zero or more "cards".  Cards
are separated by the newline character ("\n").  Leading and trailing
whitespace on a card is ignored.  Blank cards are ignored.

<p>Each card is divided into zero or more space separated tokens.
Each card is divided into zero or more space separated tokens.
The first token on each card is the operator.  Subsequent tokens
are arguments.  The set of operators understood by servers is slightly
different from the operators understood by clients, though the two
are very similar.</p>
are very similar.

<h3>3.2 Login Cards</h3>
<h3 id="login">3.2 Login Cards</h3>

<p>Every message from client to server begins with one or more login
cards.  Each login card has the following format:</p>
Every message from client to server begins with one or more login
cards.  Each login card has the following format:

<blockquote>
<b>login</b>  <i>userid  nonce  signature</i>
<pre><b>login</b>  <i>userid  nonce  signature</i></pre>
</blockquote>

<p>The userid is the name of the user that is requesting service
The userid is the name of the user that is requesting service
from the server.  The nonce is the SHA1 hash of the remainder of
the message - all text that follows the newline character that
terminates the login card.  The signature is the SHA1 hash of
the concatenation of the nonce and the users password.</p>
the concatenation of the nonce and the users password.

<p>For each login card, the server looks up the user and verifies
For each login card, the server looks up the user and verifies
that the nonce matches the SHA1 hash of the remainder of the
message.  It then checks the signature hash to make sure the 
message.  It then checks the signature hash to make sure the
signature matches.  If everything
checks out, then the client is granted all privileges of the
specified user.</p>
specified user.

<p>Privileges are cumulative.  There can be multiple successful
login cards.  The session privileges are the bit-wise OR of the
privileges of each individual login.</p>
Privileges are cumulative.  There can be multiple successful
login cards.  The session privilege is the union of all
privileges from all login cards.

<h3>3.3 File Cards</h3>
<h3 id="file">3.3 File Cards</h3>

<p>Artifacts are transferred using "file" cards.  (The name "file"
card comes from the fact that most artifacts correspond to files.)
File cards come in two different formats depending
on whether the artifact is sent directly or as a delta from some
other artifact.</p>
Artifacts are transferred using either "file" cards, or "cfile"
or "uvfile" cards.
The name "file" card comes from the fact that most artifacts correspond to
files that are under version control.
The "cfile" name is an abbreviation for "compressed file".
The "uvfile" name is an abbreviation for "unversioned file".

<h4 id="ordinary-fc">3.3.1 Ordinary File Cards</h4>

For sync protocols, artifacts are transferred using "file"
cards.  File cards come in two different formats depending
on whether the artifact is sent directly or as a 
[./delta_format.wiki|delta] from some
other artifact.

<blockquote>
<b>file</b> <i>artifact-id size</i> <b>\n</b> <i>content</i><br>
<pre>
<b>file</b> <i>artifact-id size</i> <b>\n</b> <i>content</i>
<b>file</b> <i>artifact-id delta-artifact-id size</i> <b>\n</b> <i>content</i>
</blockquote>
</pre>

<p>File cards are different from all other cards in that they
followed by in-line "payload" data.  The content of the artifact
or the artifact delta consists of the first <i>size</i> bytes of the
File cards are followed by in-line "payload" data.
The content of the artifact
or the artifact delta is the first <i>size</i> bytes of the
x-fossil content that immediately follow the newline that
terminates the file card.  No other cards have this characteristic.
</p>
terminates the file card.


<p>The first argument of a file card is the ID of the artifact that
The first argument of a file card is the ID of the artifact that
is being transferred.  The artifact ID is the lower-case hexadecimal
representation of the SHA1 hash of the artifact.
representation of the name hash for the artifact.
The last argument of the file card is the number of bytes of
payload that immediately follow the file card.  If the file
card has only two arguments, that means the payload is the
complete content of the artifact.  If the file card has three
arguments, then the payload is a delta and second argument is
the ID of another artifact that is the source of the delta.</p>
arguments, then the payload is a 
[./delta_format.wiki|delta] and the second argument is
the ID of another artifact that is the source of the delta.

<p>File cards are sent in both directions: client to server and
File cards are sent in both directions: client to server and
server to client.  A delta might be sent before the source of
the delta, so both client and server should remember deltas
and be able to apply them when their source arrives.</p>
and be able to apply them when their source arrives.

<h4 id="compressed-fc">3.3.2 Compressed File Cards</h4>

A client that sends a clone protocol version "3" or greater will
receive artifacts as "cfile" cards while cloning.  This card was
introduced to improve the speed of the transfer of content by sending the
compressed artifact directly from the server database to the client.

Compressed File cards are similar to File cards, sharing the same
in-line "payload" data characteristics and also the same treatment of
direct content or delta content.  Cfile cards come in two different formats
depending on whether the artifact is sent directly or as a delta from
some other artifact.

<pre>
<b>cfile</b> <i>artifact-id usize csize</i> <b>\n</b> <i>content</i>
<b>cfile</b> <i>artifact-id delta-artifact-id usize csize</i> <b>\n</b> <i>content</i>
</pre>

The first argument of the cfile card is the ID of the artifact that
is being transferred.  The artifact ID is the lower-case hexadecimal
representation of the name hash for the artifact.  The second argument of
the cfile card is the original size in bytes of the artifact.  The last
argument of the cfile card is the number of compressed bytes of payload
that immediately follow the cfile card.  If the cfile card has only
three arguments, that means the payload is the complete content of the
artifact.  If the cfile card has four arguments, then the payload is a
delta and the second argument is the ID of another artifact that is the
source of the delta and the third argument is the original size of the
delta artifact.

Unlike file cards, cfile cards are only sent in one direction during a
clone from server to client for clone protocol version "3" or greater.

<h4 id="private">3.3.3 Private artifacts</h4>

"Private" content consist of artifacts that are not normally synced.
However, private content will be synced when the
the [/help?cmd=sync|fossil sync] command includes the "--private" option.

Private content is marked by a "private" card:

<pre><b>private</b></pre>

The private card has no arguments and must directly precede a
file card that contains the private content.

<h4 id="uv-fc">3.3.4 Unversioned File Cards</h4>

Unversioned content is sent in both directions (client to server and
server to client) using "uvfile" cards in the following format:

<pre><b>uvfile</b> <i>name mtime hash size flags</i> <b>\n</b> <i>content</i></pre>

The <i>name</i> field is the name of the unversioned file.  The
<i>mtime</i> is the last modification time of the file in seconds
since 1970.  The <i>hash</i> field is the hash of the content
for the unversioned file, or "<b>-</b>" for deleted content.
The <i>size</i> field is the (uncompressed) size of the content
in bytes.  The <i>flags</i> field is an integer which is interpreted
as an array of bits.  The 0x0004 bit of <i>flags</i> indicates that
the <i>content</i> is to be omitted.  The content might be omitted if
it is too large to transmit, or if the sender merely wants to update the
modification time of the file without changing the files content.
The <i>content</i> is the (uncompressed) content of the file.

The receiver should only accept the uvfile card if the hash and
size match the content and if the mtime is newer than any existing
instance of the same file held by the receiver.  The sender will not
normally transmit a uvfile card unless all these constraints are true,
but the receiver should double-check.

A server will only accept uvfile cards if the login user has
the "y" write-unversioned permission.

Servers send uvfile cards in response to uvgimme cards received from
the client.  Clients send uvfile cards when they determine that the server
needs the content based on uvigot cards previously received from the server.

<h3>3.4 Push and Pull Cards</h3>
<h3 id="push" name="pull">3.4 Push and Pull Cards</h3>

<p>Among of the first cards in a client-to-server message are
the push and pull cards.  The push card tell the server that
the client is pushing content.  The pull card tell the server
Among the first cards in a client-to-server message are
the push and pull cards.  The push card tells the server that
the client is pushing content.  The pull card tells the server
that the client wants to pull content.  In the event of a sync,
both cards are sent.  The format is as follows:</p>
both cards are sent.  The format is as follows:

<blockquote>
<b>push</b> <i>servercode projectcode</i><br>
<pre>
<b>push</b> <i>servercode projectcode</i>
<b>pull</b> <i>servercode projectcode</i>
</blockquote>
</pre>

<p>The <i>servercode</i> argument is the repository ID for the
The <i>servercode</i> argument is the repository ID for the
client.  The server will only allow the transaction to proceed
if the servercode is different from its own servercode.  This
prevents a sync-loop.  The <i>projectcode</i> is the identifier
client.  The <i>projectcode</i> is the identifier
of the software project that the client repository contains.
The projectcode for the client and server must match in order
for the transaction to proceed.</p>
for the transaction to proceed.

<p>The server will also send a push card back to the client
The server will also send a push card back to the client
during a clone.  This is how the client determines what project
code to put in the new repository it is constructing.</p>
code to put in the new repository it is constructing.

The <i>servercode</i> argument is currently unused.

<h3>3.5 Clone Cards</h3>
<h3 id="clones">3.5 Clone Cards</h3>

<p>A clone card works like a pull card in that it is sent from
A clone card works like a pull card in that it is sent from
client to server in order to tell the server that the client
wants to pull content.  But unlike the pull card, the clone
card has no arguments.</p>
wants to pull content.  The clone card comes in two formats.  Older
clients use the no-argument format and newer clients use the
two-argument format.

<blockquote>
<pre>
<b>clone</b>
<b>clone</b> <i>protocol-version sequence-number</i>
</blockquote>
</pre>

<h4>3.5.1 Protocol 3</h4>

The latest clients send a two-argument clone message with a
protocol version of "3".   (Future versions of Fossil might use larger
protocol version numbers.)  Version "3" of the protocol enhanced version
"2" by introducing the "cfile" card which is intended to speed up clone
operations.  Instead of sending "file" cards, the server will send "cfile"
cards

<h4>3.5.2 Protocol 2</h4>

The sequence-number sent is the number
of artifacts received so far.  For the first clone message, the
sequence number is 0.  The server will respond by sending file
cards for some number of artifacts up to the maximum message size.

The server will also send a single "clone_seqno" card to the client
so that the client can know where the server left off.

<pre>
<b>clone_seqno</b>  <i>sequence-number</i>
</pre>

The clone message in subsequent HTTP requests for the same clone
operation will use the sequence-number from the
clone_seqno of the previous reply.

<p>In response to a clone message, the server also sends the client
In response to an initial clone message, the server also sends the client
a push message so that the client can discover the projectcode for
this project.</p>
this project.

<h4>3.5.3 Legacy Protocol</h4>

Older clients send a clone card with no argument.  The server responds
to a blank clone card by sending an "igot" card for every artifact in the
repository.  The client will then issue "gimme" cards to pull down all the
content it needs.

The legacy protocol works well for smaller repositories (50MB with 50,000
artifacts) but is too slow and unwieldy for larger repositories.
The version 2 protocol is an effort to improve performance.  Further
performance improvements with higher-numbered clone protocols are
possible in future versions of Fossil.

<h3>3.6 Igot Cards</h3>
<h3 id="igot">3.6 Igot Cards</h3>

<p>An igot card can be sent from either client to server or from
An igot card can be sent from either client to server or from
server to client in order to indicate that the sender holds a copy
of a particular artifact.  The format is:</p>
of a particular artifact.  The format is:

<blockquote>
<b>igot</b> <i>artifact-id</i>
</blockquote>
<pre>
<b>igot</b> <i>artifact-id</i> ?<i>flag</i>?
</pre>

<p>The argument of the igot card is the ID of the artifact that
The first argument of the igot card is the ID of the artifact that
the sender possesses.
The receiver of an igot card will typically check to see if
it also holds the same artifact and if not it will request the artifact
using a gimme card in either the reply or in the next message.</p>
using a gimme card in either the reply or in the next message.

If the second argument exists and is "1", then the artifact
identified by the first argument is private on the sender and should
be ignored unless a "--private" [/help?cmd=sync|sync] is occurring.

The name "igot" comes from the English slang expression "I got" meaning
"I have".

<h4>3.6.1 Unversioned Igot Cards</h4>

Zero or more "uvigot" cards are sent from server to client when
synchronizing unversioned content.  The format of a uvigot card is
as follows:

<pre>
<b>uvigot</b> <i>name mtime hash size</i>
</pre>

The <i>name</i> argument is the name of an unversioned file.
The <i>mtime</i> is the last modification time of the unversioned file
in seconds since 1970.
The <i>hash</i> is the SHA1 or SHA3-256 hash of the unversioned file
content, or "<b>-</b>" if the file has been deleted.
The <i>size</i> is the uncompressed size of the file in bytes.

When the server sees a "pragma uv-hash" card for which the hash
does not match, it sends uvigot cards for every unversioned file that it
holds.  The client will use this information to figure out which
unversioned files need to be synchronized.
The server might also send a uvigot card when it receives a uvgimme card
but its reply message size is already oversized and hence unable to hold
the usual uvfile reply.

When a client receives a "uvigot" card, it checks to see if the
file needs to be transferred from client to server or from server to client.
If a client-to-server transmission is needed, the client schedules that
transfer to occur on a subsequent HTTP request.  If a server-to-client
transfer is needed, then the client sends a "uvgimme" card back to the
server to request the file content.

<h3>3.7 Gimme Cards</h3>
<h3 id="gimme">3.7 Gimme Cards</h3>

<p>A gimme card is sent from either client to server or from server
A gimme card is sent from either client to server or from server
to client.  The gimme card asks the receiver to send a particular
artifact back to the sender.  The format of a gimme card is this:</p>
artifact back to the sender.  The format of a gimme card is this:

<blockquote>
<pre>
<b>gimme</b> <i>artifact-id</i>
</blockquote>
</pre>

<p>The argument to the gimme card is the ID of the artifact that
The argument to the gimme card is the ID of the artifact that
the sender wants.  The receiver will typically respond to a
gimme card by sending a file card in its reply or in the next
message.</p>
message.

<h3>3.8 Cookie Cards</h3>
The "gimme" name means "give me".  The imperative "give me" is
pronounced as if it were a single word "gimme" in some dialects of 
English (including the dialect spoken by the original author of Fossil).

<h4>3.7.1 Unversioned Gimme Cards</h4>

When synchronizing unversioned content, the client may send "uvgimme"
cards to the server.  A uvgimme card requests that the server send
unversioned content to the client.  The format of a uvgimme card is
as follows:

<pre>
<b>uvgimme</b> <i>name</i>
</pre>

The <i>name</i> is the name of the unversioned file found on the
server that the client would like to have.  When a server sees a
uvgimme card, it normally responses with a uvfile card, though it might
also send another uvigot card if the HTTP reply is already oversized.

<h3 id="cookie">3.8 Cookie Cards</h3>

<p>A cookie card can be used by a server to record a small amount
A cookie card can be used by a server to record a small amount
of state information on a client.  The server sends a cookie to the
client.  The client sends the same cookie back to the server on
its next request.  The cookie card has a single argument which
is its payload.</p>
is its payload.

<blockquote>
<pre>
<b>cookie</b> <i>payload</i>
</blockquote>
</pre>

<p>The client is not required to return the cookie to the server on
The client is not required to return the cookie to the server on
its next request.  Or the client might send a cookie from a different
server on the next request.  So the server must not depend on the
cookie and the server must structure the cookie payload in such
a way that it can tell if the cookie it sees is its own cookie or
a cookie from another server.  (Typically the server will embed
its servercode as part of the cookie.)</p>
its servercode as part of the cookie.)

<h3>3.9 Request-Configuration Cards</h3>
<h3 id="reqconfig">3.9 Request-Configuration Cards</h3>

A request-configuration or "reqconfig" card is sent from client to
server in order to request that the server send back "configuration"
data.  "Configuration" data is information about users or website
appearance or other administrative details which are not part of the
persistent and versioned state of the project.  For example, the "name"
of the project, the default Cascading Style Sheet (CSS) for the web-interface,
and the project logo displayed on the web-interface are all configuration
data elements.
<i>TBD...</i>

The reqconfig card is normally sent in response to the
"fossil configuration pull" command.  The format is as follows:

<pre>
<b>reqconfig</b> <i>configuration-name</i>
</pre>

As of 2024-10-22, the configuration-name must be one of the
following values:

<table border=0 align="center">
<tr><td valign="top">
<ul>
<li> css
<li> header
<li> mainmenu
<li> footer
<li> details
<li> js
<li> default-skin
<li> logo-mimetype
<li> logo-image
<li> background-mimetype
<li> background-image
<li> icon-mimetype
<li> icon-image
<li> timeline-block-markup
<li> timeline-date-format
<li> timeline-default-style
<ul></td><td valign="top"><ul>
<li> timeline-dwelltime
<li> timeline-closetime
<li> timeline-hard-newlines
<li> timeline-max-comment
<li> timeline-plaintext
<li> timeline-truncate-at-blank
<li> timeline-tslink-info
<li> timeline-utc
<li> adunit
<li> adunit-omit-if-admin
<li> adunit-omit-if-user
<li> default-csp
<li> sitemap-extra
<li> safe-html
<li> th1-hooks
<li> th1-uri-regexp
<li> project-name
<ul></td><td valign="top"><ul>
<li> short-project-name
<li> project-description
<li> index-page
<li> manifest
<li> binary-glob
<li> clean-glob
<li> ignore-glob
<li> keep-glob
<li> crlf-glob
<li> crnl-glob
<li> encoding-glob
<li> empty-dirs
<li> <s title="removed 2020-08, version 2.12.1">allow-symlinks</s>
<li> dotfiles
<li> parent-project-code
<li> parent-project-name
<ul></td><td valign="top"><ul>
<li> hash-policy
<li> comment-format
<li> mimetypes
<li> forbid-delta-manifests
<li> mv-rm-files
<li> ticket-table
<li> ticket-common
<li> ticket-change
<li> ticket-newpage
<li> ticket-viewpage
<li> ticket-editpage
<li> ticket-reportlist
<li> ticket-report-template
<li> ticket-key-template
<li> ticket-title-expr
<li> ticket-closed-expr
<ul></td><td valign="top"><ul>
<li> user-color-map
<li> xfer-common-script
<li> xfer-push-script
<li> xfer-commit-script
<li> xfer-ticket-script
<li> @reportfmt
<li> @user
<li> @concealed
<li> @shun
<li> @alias
<li> @subscriber
<li> @interwiki
</ul></td></tr>
</table>

New configuration-names are likely to be added in future releases of
Fossil.  If the server receives a configuration-name that it does not
understand, the entire reqconfig card is silently ignored.  The reqconfig
card might also be ignored if the user lacks sufficient privilege to
access the requested information.

The configuration-names that begin with an alphabetic character refer
to values in the "config" table of the server database.  For example,
the "logo-image" configuration item refers to the project logo image
that is configured on the Admin page of the [./webui.wiki | web-interface].
The value of the configuration item is returned to the client using a
"config" card.

If the configuration-name begins with "@", that refers to a class of
values instead of a single value.  The content of these configuration items
is returned in a "config" card that contains pure SQL text that is
intended to be evaluated by the client.

The @user and @concealed configuration items contain sensitive information
and are ignored for clients without sufficient privilege.

<h3>3.10 Configuration Cards</h3>
<h3 id="config">3.10 Configuration Cards</h3>

A "config" card is used to send configuration information from client
to server (in response to a "fossil configuration push" command) or
from server to client (in response to a "fossil configuration pull" or
"fossil clone" command).  The format is as follows:
<i>TBD...</i>

<pre>
<b>config</b> <i>configuration-name size</i> <b>\n</b> <i>content</i>
</pre>

The server will only accept a config card if the user has
"Admin" privilege.  A client will only accept a config card if
it had sent a corresponding reqconfig card in its request.

The content of the configuration item is used to overwrite the
corresponding configuration data in the receiver.

<h3 id="pragma">3.11 Pragma Cards</h3>

The client may try to influence the behavior of the server by
issuing a pragma card:

<pre>
<b>pragma</i> <i>name value...</i>
</pre>

The "pragma" card has at least one argument which is the pragma name.
The pragma name defines what the pragma does.
A pragma might have zero or more "value" arguments
depending on the pragma name.

New pragma names may be added to the protocol from time to time
in order to enhance the capabilities of Fossil.
Unknown pragmas are silently ignored, for backwards compatibility.

The following are the known pragma names as of 2019-06-30:

<ol>
<li><b>send-private</b> The send-private pragma instructs the server to send all of its
private artifacts to the client.  The server will only obey this
request if the user has the "x" or "Private" privilege.

<li><b>send-catalog</b> The send-catalog pragma instructs the server to transmit igot
cards for every known artifact.  This can help the client and server
to get back in synchronization after a prior protocol error.  The
"--verily" option to the [/help?cmd=sync|fossil sync] command causes
the send-catalog pragma to be transmitted.

<li><b>uv-hash</b> <i>HASH</i> The uv-hash pragma is sent from client to server to provoke a
synchronization of unversioned content.  The <i>HASH</i> is a SHA1
hash of the names, modification times, and individual hashes of all
unversioned files on the client.  If the unversioned content hash
from the client does not match the unversioned content hash on the
server, then the server will reply with either a "pragma uv-push-ok"
or "pragma uv-pull-only" card followed by one "uvigot" card for
each unversioned file currently held on the server.  The collection
of "uvigot" cards sent in response to a "uv-hash" pragma is called
the "unversioned catalog".  The client will used the unversioned
catalog to figure out which files (if any) need to be synchronized
between client and server and send appropriate "uvfile" or "uvgimme"
cards on the next HTTP request.

If a client sends a uv-hash pragma and does not receive back
either a uv-pull-only or uv-push-ok pragma, that means that the
content on the server exactly matches the content on the client and
no further synchronization is required.

<li><b>uv-pull-only</b></i> A server sends the uv-pull-only pragma to the client in response
to a uv-hash pragma with a mismatched content hash argument.  This
pragma indicates that there are differences in unversioned content
between the client and server but that content can only be transferred
from server to client.  The server is unwilling to accept content from
the client because the client login lacks the "write-unversioned"
permission.

<li><b>uv-push-ok</b></i> A server sends the uv-push-ok pragma to the client in response
to a uv-hash pragma with a mismatched content hash argument.  This
pragma indicates that there are differences in unversioned content
between the client and server and that content can be transferred
in either direction.  The server is willing to accept content from
the client because the client login has the "write-unversioned"
permission.

<li><b>ci-lock</b> <i>CHECKIN-HASH CLIENT-ID</i> A client sends the "ci-lock" pragma to the server to indicate
that it is about to add a new check-in as a child of the
CHECKIN-HASH check-in and on the same branch as CHECKIN-HASH.
If some other client has already indicated that it was also
trying to commit against CHECKIN-HASH, that indicates that a
fork is about to occur, and the server will reply with
a "ci-lock-fail" pragma (see below).  Check-in locks
automatically expire when the check-in actually occurs, or
after a timeout (currently one minute but subject to change).

<li><b>ci-lock-fail</b> <i>LOGIN MTIME</i> When a server receives two or more "ci-lock" pragma messages
for the same check-in but from different clients, the second a
subsequent ci-lock will provoke a ci-lock-fail pragma in the
reply to let the client know that it if continues with the
check-in it will likely generate a fork.  The LOGIN and MTIME
arguments are intended to provide information to the client to
help it generate a more useful error message.

<li><b>ci-unlock</b> <i>CLIENT-ID</i> A client sends the "ci-unlock" pragma to the server after
a successful commit.  This instructs the server to release
any lock on any check-in previously held by that client.
The ci-unlock pragma helps to avoid false-positive lock warnings
that might arise if a check-in is aborted and then restarted
on a branch.
</ol>

<h3 id="comment">3.12 Comment Cards</h3>

Any card that begins with "#" (ASCII 0x23) is a comment card and
is silently ignored.

<h3>3.11 Error Cards</h3>
<h3 id="error">3.13 Message and Error Cards</h3>

<p>If the server discovers anything wrong with a request, it generates
If the server discovers anything wrong with a request, it generates
an error card in its reply.  When the client sees the error card,
it displays an error message to the user and aborts the sync
operation.  An error card looks like this:</p>
operation.  An error card looks like this:

<blockquote>
<pre>
<b>error</b> <i>error-message</i>
</blockquote>
</pre>

<p>The error message is English text that is encoded in order to
The error message is English text that is encoded in order to
be a single token.
A space (ASCII 0x20) is represented as "\s" (ASCII 0x5C, 0x73).  A
newline (ASCII 0x0a) is "\n" (ASCII 0x6C, x6E).  A backslash 
newline (ASCII 0x0a) is "\n" (ASCII 0x6C, x6E).  A backslash
(ASCII 0x5C) is represented as two backslashes "\\".  Apart from
space and newline, no other whitespace characters nor any
unprintable characters are allowed in
the error message.</p>
the error message.

<h3>3.12 Comment Cards</h3>
The server can also send a message card that also prints a
message on the client console, but which is not an error:

<pre>
<b>message</b> <i>message-text</i>
</pre>
<p>Any card that begins with "#" (ASCII 0x23) is a comment card and

is silently ignored.</p>
The message-text uses the same format as an error message.

<h3>3.13 Unknown Cards</h3>
<h3 id="unknown">3.14 Unknown Cards</h3>

<p>If either the client or the server sees a card that is not
described above, then it generates an error and aborts.</p>
If either the client or the server sees a card that is not
described above, then it generates an error and aborts.

<h2>4.0 Phantoms And Clusters</h2>
<h2 id="phantoms" name="clusters">4.0 Phantoms And Clusters</h2>

<p>When a repository knows that a artifact exists and knows the ID of
When a repository knows that an artifact exists and knows the ID of
that artifact, but it does not know the artifact content, then it stores that
artifact as a "phantom".  A repository will typically create a phantom when
it receives an igot card for a artifact that it does not hold or when it
it receives an igot card for an artifact that it does not hold or when it
receives a file card that references a delta source that it does not
hold.  When a server is generating its reply or when a client is
generating a new request, it will usually send gimme cards for every
phantom that it holds.</p>
phantom that it holds.

<p>A cluster is a special artifact that tells of the existence of other
A cluster is a special artifact that tells of the existence of other
artifacts.  Any artifact in the repository that follows the syntactic rules
of a cluster is considered a cluster.</p>
of a cluster is considered a cluster.

<p>A cluster is line oriented.  Each line of a cluster
A cluster is line oriented.  Each line of a cluster
is a card.  The cards are separated by the newline ("\n") character.
Each card consists of a single character card type, a space, and a
single argument.  No extra whitespace and no trailing or leading
whitespace is allowed.  All cards in the cluster must occur in
strict lexicographical order.</p>
strict lexicographical order.

<p>A cluster consists of one or more "M" cards followed by a single
"Z" card.  Each M card holds an argument which is a artifact ID for an
A cluster consists of one or more "M" cards followed by a single
"Z" card.  Each M card holds an argument which is an artifact ID for an
artifact in the repository.  The Z card has a single argument which is the
lower-case hexadecimal representation of the MD5 checksum of all
preceding M cards up to and included the newline character that
occurred just before the Z that starts the Z card.</p>
occurred just before the Z that starts the Z card.

<p>Any artifact that does not match the specifications of a cluster
Any artifact that does not match the specifications of a cluster
exactly is not a cluster.  There must be no extra whitespace in
the artifact.  There must be one or more M cards.  There must be a
single Z card with a correct MD5 checksum.  And all cards must
be in strict lexicographical order.</p>
be in strict lexicographical order.

<h3>4.1 The Unclustered Table</h3>
<h3 id="unclustered">4.1 The Unclustered Table</h3>

<p>Every repository maintains a table named "<b>unclustered</b>"
Every repository maintains a table named "<b>unclustered</b>"
which records the identity of every artifact and phantom it holds that is not
mentioned in a cluster.  The entries in the unclustered table can
be thought of as leaves on a tree of artifacts.  Some of the unclustered
artifacts will be other clusters.  Those clusters may contain other clusters,
which might contain still more clusters, and so forth.  Beginning
with the artifacts in the unclustered table, one can follow the chain
of clusters to find every artifact in the repository.</p>
of clusters to find every artifact in the repository.

<h2>5.0 Synchronization Strategies</h2>
<h2 id="strategies">5.0 Synchronization Strategies</h2>

<h3>5.1 Pull</h3>
<h3 id="pull-strategy">5.1 Pull</h3>

<p>A typical pull operation proceeds as shown below.  Details
of the actual implementation may very slightly but the gist of
a pull is captured in the following steps:</p>
A typical pull operation proceeds as shown below.  Details
of the actual implementation may vary slightly but the gist of
a pull is captured in the following steps:

<ol>
<li>The client sends login and pull cards.
<li>The client sends a cookie card if it has previously received a cookie.
<li>The client sends gimme cards for every phantom that it holds.
<hr>
<li>The server checks the login password and rejects the session if
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<li>The client adds the content of file cards to its repository.
<li>The client creates a phantom for every igot card in the server reply
that mentions an artifact that the client does not possess.
<li>The client creates a phantom for the delta source of file cards when
the delta source is an artifact that the client does not possess.
</ol>

<p>These ten steps represent a single HTTP round-trip request.
These ten steps represent a single HTTP round-trip request.
The first three steps are the processing that occurs on the client
to generate the request.  The middle four steps are processing
that occurs on the server to interpret the request and generate a
reply.  And the last three steps are the processing that the
client does to interpret the reply.</p>
client does to interpret the reply.

<p>During a pull, the client will keep sending HTTP requests
until it holds all artifacts that exist on the server.</p>
During a pull, the client will keep sending HTTP requests
until it holds all artifacts that exist on the server.

<p>Note that the server tries
Note that the server tries
to limit the size of its reply message to something reasonable
(usually about 1MB) so that it might stop sending file cards as
described in step (6) if the reply becomes too large.</p>
described in step (6) if the reply becomes too large.

<p>Step (5) is the only way in which new clusters can be created.
Step (5) is the only way in which new clusters can be created.
By only creating clusters on the server, we hope to minimize the
amount of overlap between clusters in the common configuration where
there is a single server and many clients.  The same synchronization
protocol will continue to work even if there are multiple servers
or if servers and clients sometimes change roles.  The only negative
effects of these unusual arrangements is that more than the minimum
number of clusters might be generated.</p>
number of clusters might be generated.

<h3>5.2 Push</h3>
<h3 id="push-stragegy">5.2 Push</h3>

<p>A typical push operation proceeds roughly as shown below.  As
with a pull, the actual implementation may vary slightly.</p>
A typical push operation proceeds roughly as shown below.  As
with a pull, the actual implementation may vary slightly.

<ol>
<li>The client sends login and push cards.
<li>The client sends file cards for any artifacts that it holds that have
never before been pushed - artifacts that come from local check-ins.
<li>If this is the second or later cycle in a push, then the
client sends file cards for any gimme cards that the server sent
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it does not possess.
<li>The server issues gimme cards for all phantoms.
<hr>
<li>The client remembers the gimme cards from the server so that it
can generate file cards in reply on the next cycle.
</ol>

<p>As with a pull, the steps of a push operation repeat until the
As with a pull, the steps of a push operation repeat until the
server knows all artifacts that exist on the client.  Also, as with
pull, the client attempts to keep the size of the request from
growing too large by suppressing file cards once the
size of the request reaches 1MB.</p>
size of the request reaches 1MB.

<h3>5.3 Sync</h3>
<h3 id="sync-strategy">5.3 Sync</h3>

<p>A sync is just a pull and a push that happen at the same time.
A sync is just a pull and a push that happen at the same time.
The first three steps of a pull are combined with the first five steps
of a push.  Steps (4) through (7) of a pull are combined with steps
(5) through (8) of a push.  And steps (8) through (10) of a pull
are combined with step (9) of a push.</p>
are combined with step (9) of a push.

<h3 id="uv-strategy">5.4 Unversioned File Sync</h3>

"Unversioned files" are files held in the repository
where only the most recent version of the file is kept rather than
the entire change history.  Unversioned files are intended to be
used to store ephemeral content, such as compiled binaries of the
most recent release.

Unversioned files are identified by name and timestamp (mtime).
Only the most recent version of each file (the version with
the largest mtime value) is retained.

Unversioned files are synchronized using the
[/help?cmd=unversioned|fossil unversioned sync] command.

A schematic of an unversioned file synchronization is as follows:

<ol>
<li>The client sends a "pragma uv-hash" card to the server.  The argument
    to the uv-hash pragma is a hash of all filesnames, mtimes, and
    content hashes for the unversioned files held by the client.
    <hr>
<li>If the unversioned content hash from the client matches the unversioned
    content hash on the server, then nothing needs to be done and the
    server no-ops.  But if the hashes are different, then the server
    replies with either a uv-pull-only or a uv-push-ok pragma followed by
    uvigot cards for all unversioned files held on the server.
    <hr>
<li>The client examines the uvigot cards received from the server and
    determines which unversioned files need to be exchanged in order
    to bring the client and server into synchronization.  The client
    then sends appropriate "uvgimme" or "uvfile" cards back to the
    server.
    <hr>
<li>The server updates its unversioned file store with received "uvfile"
    cards and answers "uvgimme" cards with "uvfile" cards in its reply.
</ol>

The last two steps might be repeated multiple
times if there is more unversioned content to be transferred than will
fit comfortably in a single HTTP request.

<h2>6.0 Summary</h2>
<h2 id="summary">6.0 Summary</h2>

<p>Here are the key points of the synchronization protocol:</p>
Here are the key points of the synchronization protocol:

<ol>
<li>The client sends one or more PUSH HTTP requests to the server.
    The request and reply content type is "application/x-fossil".
<li>HTTP request content is compressed using zlib.
<li>The content of request and reply consists of cards with one
    card per line.  
    card per line.
<li>Card formats are:
    <ul>
    <li> <b>login</b> <i>userid nonce signature</i>
    <li> <b>push</b> <i>servercode projectcode</i>
    <li> <b>pull</b> <i>servercode projectcode</i>
    <li> <b>clone</b>
    <li> <b>clone_seqno</b> <i>sequence-number</i>
    <li> <b>file</b> <i>artifact-id size</i> <b>\n</b> <i>content</i>
    <li> <b>file</b> <i>artifact-id delta-artifact-id size</i> <b>\n</b> <i>content</i>
    <li> <b>cfile</b> <i>artifact-id size</i> <b>\n</b> <i>content</i>
    <li> <b>cfile</b> <i>artifact-id delta-artifact-id size</i> <b>\n</b> <i>content</i>
    <li> <b>uvfile</b> <i>name mtime hash size flags</i> <b>\n</b> <i>content</i>
    <li> <b>private</b>
    <li> <b>igot</b> <i>artifact-id</i>
    <li> <b>igot</b> <i>artifact-id</i> ?<i>flag</i>?
    <li> <b>uvigot</b> <i>name mtime hash size</i>
    <li> <b>gimme</b> <i>artifact-id</i>
    <li> <b>uvgimme</b> <i>name</i>
    <li> <b>cookie</b>  <i>cookie-text</i>
    <li> <b>reqconfig</b> <i>parameter-name</i>
    <li> <b>config</b> <i>parameter-name size</i> <b>\n</b> <i>content</i>
    <li> <b>#</b> <i>arbitrary-text...</i>
    <li> <b>pragma</b> <i>name</i> <i>value...</i>
    <li> <b>error</b> <i>error-message</i>
    <li> <b>message</b> <i>text-messate</i>
    <li> <b>#</b> <i>arbitrary-text...</i>
    </ul>
<li>Phantoms are artifacts that a repository knows exist but does not possess.
<li>Clusters are artifacts that contain IDs of other artifacts.
<li>Clusters are created automatically on the server during a pull.
<li>Repositories keep track of all artifacts that are not named in any
cluster and send igot messages for those artifacts.
<li>Repositories keep track of all the phantoms they hold and send
gimme messages for those artifacts.
</ol>

<h2 id="troubleshooting">7.0 Troubleshooting And Debugging Hints</h2>

If you run the [/help?cmd=sync|fossil sync] command
(or [/help?cmd=pull|pull] or [/help?cmd=push|push] or
[/help?cmd=clone|clone]) with the --httptrace option, Fossil
will keep a copy of each HTTP request and reply in files
named:
<ul>
<li> <tt>http-request-</tt><i>N</i><tt>.txt</tt>
<li> <tt>http-reply-</tt><i>N</i><tt>.txt</tt>
</ul>

In the above, <i>N</i> is an integer that increments with each
round-trip.  If you are having trouble on the server side,
you can run the "[/help?cmd=test-http|fossil test-http]" command in a
debugger using one the "http-request-N.txt" files as input and
single step through the processing performed by the server.

The "--transport-command CMD" option on [/help?cmd=sync|fossil sync]
(and similar) causes the external program "CMD" to be used to move
the sync message to the server and retrieve the sync reply.  The
CMD is given three arguments:
<ol>
<li> The URL of the server
<li> The name of a temporary file that contains the output-bound sync
     protocol text, with the HTTP headers
<li> The name of a temporary file into which the CMD should write the
     reply sync protocol text, again without any HTTP headers
</ol>

In a complex debugging situation, you can run the command
"fossil sync --transport-command ./debugging_script" where
"debugging_script" is some script of your own that invokes
the anomalous behavior you are trying to debug.
Added www/tech_overview.wiki.


























































































































































































































































































































































































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<title>A Technical Overview of Fossil's Design & Implementation</title>

<h2>1.0 Introduction</h2>

At its lowest level, a Fossil repository consists of an unordered set
of immutable "artifacts".  You might think of these artifacts as "files",
since in many cases the artifacts are exactly that.
But other "structural artifacts" are also included in the mix.
These structural artifacts define the relationships
between artifacts - which files go together to form a particular
version of the project, who checked in that version and when, what was
the check-in comment, what wiki pages are included with the project, what
are the edit histories of each wiki page, what bug reports or tickets are
included, who contributed to the evolution of each ticket, and so forth.
This low-level file format is called the "global state" of
the repository, since this is the information that is synced to peer
repositories using push and pull operations.   The low-level file format
is also called "enduring" since it is intended to last for many years.
The details of the low-level, enduring, global file format
are [./fileformat.wiki | described separately].

This article is about how Fossil is currently implemented.  Instead of
dealing with vague abstractions of "enduring file formats" as the
[./fileformat.wiki | other document] does, this article provides
some detail on how Fossil actually stores information on disk.

<h2>2.0 Three Databases</h2>

Fossil stores state information in
[http://www.sqlite.org/ | SQLite] database files.
SQLite keeps an entire relational database, including multiple tables and
indices, in a single disk file.  The SQLite library allows the database
files to be efficiently queried and updated using the industry-standard
SQL language.  SQLite updates are atomic, so even in the event of
a system crashes or power failure the repository content is protected.

Fossil uses three separate classes of SQLite databases:

<ol>
<li>The configuration database
<li>Repository databases
<li>Checkout databases
</ol>

The configuration database is a one-per-user database that holds
global configuration information used by Fossil.  There is one
repository database per project.  The repository database is the
file that people are normally referring to when they say
"a Fossil repository".  The checkout database is found in the working
checkout for a project and contains state information that is unique
to that working checkout.

Fossil does not always use all three database files.  The web interface,
for example, typically only uses the repository database.  And the
[/help/settings | fossil settings] command only opens the configuration database
when the --global option is used.  But other commands use all three
databases at once.  For example, the [/help/status | fossil status]
command will first locate the checkout database, then use the checkout
database to find the repository database, then open the configuration
database.  Whenever multiple databases are used at the same time,
they are all opened on the same SQLite database connection using
SQLite's [http://www.sqlite.org/lang_attach.html | ATTACH] command.

The chart below provides a quick summary of how each of these
database files are used by Fossil, with detailed discussion following.

<table align="center">
<tr valign="bottom">
<th style="text-align:center">Configuration&nbsp;Database<br>"~/.fossil" or<br>
"~/.config/fossil.db"
<th style="text-align:center">Repository Database<br>"<i>project</i>.fossil"
<th style="text-align:center">Checkout Database<br>"_FOSSIL_" or ".fslckout"
<tr valign="top">
<td><ul>
<li>Global [/help/settings |settings]
<li>List of active repositories used by the [/help/all | all] command
</ul></td>
<td><ul>
<li>[./fileformat.wiki | Global state of the project]
    encoded using delta-compression
<li>Local [/help/settings|settings]
<li>Web interface display preferences
<li>User credentials and permissions
<li>Metadata about the global state to facilitate rapid
    queries
</ul></td>
<td><ul>
<li>The repository database used by this checkout
<li>The version currently checked out
<li>Other versions [/help/merge | merged] in but not
    yet [/help/commit | committed]
<li>Changes from the [/help/add | add], [/help/delete | delete],
    and [/help/rename | rename] commands that have not yet been committed
<li>"mtime" values and other information used to efficiently detect
     local edits
<li>The "[/help/stash | stash]"
<li>Information needed to "[/help/undo|undo]" or "[/help/redo|redo]"
</ul></td>
</tr>
</table>

<h3 id="configdb">2.1 The Configuration Database</h3>

The configuration database holds cross-repository preferences and a list of all
repositories for a single user.

The [/help/settings | fossil settings] command can be used to specify various
operating parameters and preferences for Fossil repositories.  Settings can
apply to a single repository, or they can apply globally to all repositories
for a user.  If both a global and a repository value exists for a setting,
then the repository-specific value takes precedence.  All of the settings
have reasonable defaults, and so many users will never need to change them.
But if changes to settings are desired, the configuration database provides
a way to change settings for all repositories with a single command, rather
than having to change the setting individually on each repository.

The configuration database also maintains a list of repositories.  This
list is used by the [/help/all | fossil all] command in order to run various
operations such as "sync" or "rebuild" on all repositories managed by a user.

<h4 id="configloc">2.1.1 Location Of The Configuration Database</h4>

On Unix systems, the configuration database is named by the following
algorithm:

<table>
<tr><td>1. if environment variable FOSSIL_HOME exists
     <td>&nbsp;&rarr;&nbsp;<td>$FOSSIL_HOME/.fossil
<tr><td>2. if file ~/.fossil exists
     <td>&nbsp;&rarr;<td>~/.fossil
<tr><td>3. if environment variable XDG_CONFIG_HOME exists
    <td>&nbsp;&rarr;<td>$XDG_CONFIG_HOME/fossil.db
<tr><td>4. if the directory ~/.config exists
    <td>&nbsp;&rarr;<td>~/.config/fossil.db
<tr><td>5. Otherwise<td>&nbsp;&rarr;<td>~/.fossil
</table>

Another way of thinking of this algorithm is the following:

  *  Use "$FOSSIL_HOME/.fossil" if the FOSSIL_HOME variable is defined
  *  Use the XDG-compatible name (usually ~/.config/fossil.db) on XDG systems
     if the ~/.fossil file does not already exist
  *  Otherwise, use the traditional unix name of "~/.fossil"

This algorithm is complex due to the need for historical compatibility.
Originally, the database was always just "~/.fossil".  Then support
for the FOSSIL_HOME environment variable was added.  Later, support for the
[https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html|XDG-compatible configation filenames]
was added.  Each of these changes needed to continue to support legacy
installations.

On Windows, the configuration database is the first of the following
for which the corresponding environment variables exist:

  *  %FOSSIL_HOME%/_fossil
  *  %LOCALAPPDATA%/_fossil
  *  %APPDATA%/_fossil
  *  %USERPROFILES%/_fossil
  *  %HOMEDRIVE%%HOMEPATH%/_fossil

The second case is the one that usually determines the name. Note that the
FOSSIL_HOME environment variable can always be set to determine the 
location of the configuration database.  Note also that the configuration
database file itself is called ".fossil" or "fossil.db" on unix but
"_fossil" on windows.

The [/help?cmd=info|fossil info] command will show the location of
the configuration database on a line that starts with "config-db:".

<h3>2.2 Repository Databases</h3>

The repository database is the file that is commonly referred to as
"the repository".  This is because the repository database contains,
among other things, the complete revision, ticket, and wiki history for
a project.  It is customary to name the repository database after the
name of the project, with a ".fossil" suffix.  For example, the repository
database for the self-hosting Fossil repository is called "fossil.fossil"
and the repository database for SQLite is called "sqlite.fossil".

<h4>2.2.1 Global Project State</h4>

The bulk of the repository database (typically 75 to 85%) consists
of the artifacts that comprise the
[./fileformat.wiki | enduring, global, shared state] of the project.
The artifacts are stored as BLOBs, compressed using
[http://www.zlib.net/ | zlib compression] and, where applicable,
using [./delta_encoder_algorithm.wiki | delta compression].
The combination of zlib and delta compression results in a considerable
space savings.  For the SQLite project (when this paragraph was last
updated on 2020-02-08)
the total size of all artifacts is over 7.1 GB but thanks to the
combined zlib and delta compression, that content only takes less than
97 MB of space in the repository database, for a compression ratio
of about 74:1.  The median size of all content BLOBs after delta
and zlib compression have been applied is 156 bytes.
The median size of BLOBs without compression is 45,312 bytes.

Note that the zlib and delta compression is not an inherent part of the
Fossil file format; it is just an optimization.
The enduring file format for Fossil is the unordered
set of artifacts. The compression techniques are just a detail of
how the current implementation of Fossil happens to store these artifacts
efficiently on disk.

All of the original uncompressed and un-delta'd artifacts can be extracted
from a Fossil repository database using
the [/help/deconstruct | fossil deconstruct]
command. Individual artifacts can be extracted using the
[/help/artifact | fossil artifact] command.
When accessing the repository database using raw SQL and the
[/help/sqlite3 | fossil sql] command, the extension function
"<tt>content()</tt>" with a single argument which is the SHA1 or
SHA3-256 hash
of an artifact will return the complete uncompressed
content of that artifact.

Going the other way, the [/help/reconstruct | fossil reconstruct]
command will scan a directory hierarchy and add all files found to
a new repository database.  The [/help/import | fossil import] command
works by reading the input git-fast-export stream and using it to construct
corresponding artifacts which are then written into the repository database.

<h4>2.2.2 Project Metadata</h4>

The global project state information in the repository database is
supplemented by computed metadata that makes querying the project state
more efficient.  Metadata includes information such as the following:

  *  The names for all files found in any check-in.
  *  All check-ins that modify a given file
  *  Parents and children of each check-in.
  *  Potential timeline rows.
  *  The names of all symbolic tags and the check-ins they apply to.
  *  The names of all wiki pages and the artifacts that comprise each
     wiki page.
  *  Attachments and the wiki pages or tickets they apply to.
  *  Current content of each ticket.
  *  Cross-references between tickets, check-ins, and wiki pages.

The metadata is held in various SQL tables in the repository database.
The metadata is designed to facilitate queries for the various timelines and
reports that Fossil generates.
As the functionality of Fossil evolves,
the schema for the metadata can and does change.
But schema changes do not invalidate the repository.  Remember that the
metadata contains no new information - only information that has been
extracted from the canonical artifacts and saved in a more useful form.
Hence, when the metadata schema changes, the prior metadata can be discarded
and the entire metadata corpus can be recomputed from the canonical
artifacts.  That is what the
[/help/rebuild | fossil rebuild] command does.

<h4>2.2.3 Display And Processing Preferences</h4>

The repository database also holds information used to help format
the display of web pages and configuration settings that override the
global configuration settings for the specific repository.  All of
this information (and the user credentials and privileges too) is
local to each repository database; it is not shared between repositories
by [/help/sync | fossil sync].  That is because it is entirely reasonable
that two different websites for the same project might have completely
different display preferences and user communities.  One instance of the
project might be a fork of the other, for example, which pulls from the
other but never pushes and extends the project in ways that the keepers of
the other website disapprove of.

Display and processing information includes the following:

  *  The name and description of the project
  *  The CSS file, header, and footer used by all web pages
  *  The project logo image
  *  Fields of tickets that are considered "significant" and which are
     therefore collected from artifacts and made available for display
  *  Templates for screens to view, edit, and create tickets
  *  Ticket report formats and display preferences
  *  Local values for [/help/settings | settings] that override the
     global values defined in the per-user configuration database.

Though the display and processing preferences do not move between
repository instances using [/help/sync | fossil sync], this information
can be shared between repositories using the
[/help/config | fossil config push] and
[/help/config | fossil config pull] commands.
The display and processing information is also copied into new
repositories when they are created using
[/help/clone | fossil clone].

<h4>2.2.4 User Credentials And Privileges</h4>

Just because two development teams are collaborating on a project and allow
push and/or pull between their repositories does not mean that they
trust each other enough to share passwords and access privileges.
Hence the names and emails and passwords and privileges of users are
considered private information that is kept locally in each repository.

Each repository database has a table holding the username, privileges,
and login credentials for users authorized to interact with that particular
database.  In addition, there is a table named "concealed" that maps the
SHA1 hash of each users email address back into their true email address.
The concealed table allows just the SHA1 hash of email addresses to
be stored in tickets, and thus prevents actual email addresses from falling
into the hands of spammers who happen to clone the repository.

The content of the user and concealed tables can be pushed and pulled using the
[/help/config | fossil config push] and
[/help/config | fossil config pull] commands with the "user" and
"email" as the AREA argument, but only if you have administrative
privileges on the remote repository.

<h4>2.2.5 Shunned Artifact List</h4>

The set of canonical artifacts for a project - the global state for the
project - is intended to be an append-only database.  In other words,
new artifacts can be added but artifacts can never be removed.  But
it sometimes happens that inappropriate content is mistakenly or
maliciously added to a repository.  The only way to get rid of
the undesired content is to [./shunning.wiki | "shun"] it.
The "shun" table in the repository database records the hash values for
all shunned artifacts.

The shun table can be pushed or pulled using
the [/help/config | fossil config] command with the "shun" AREA argument.
The shun table is also copied during a [/help/clone | clone].

<h3 id="localdb">2.3 Checkout Databases</h3>

Fossil allows a single repository
to have multiple working checkouts.  Each working checkout has a single
database in its root directory that records the state of that checkout.
The checkout database is named "_FOSSIL_" or ".fslckout".
The checkout database records information such as the following:

  *  The name of the repository database file.
  *  The version that is currently checked out.
  *  Files that have been [/help/add | added],
     [/help/rm | removed], or [/help/mv | renamed] but not
     yet committed.
  *  The mtime and size of files as they were originally checked out,
     in order to expedite checking which files have been edited.
  *  Other check-ins that have been [/help/merge | merged] into the
     working checkout but not yet committed.
  *  Copies of files prior to the most recent undoable operation - needed to
     implement the [/help/undo | undo] and [/help/redo | redo] commands.
  *  The [/help/stash | stash].
  *  State information for the [/help/bisect | bisect] command.

For Fossil commands that run from within a working checkout, the
first thing that happens is that Fossil locates the checkout database.
Fossil first looks in the current directory.  If not found there, it
looks in the parent directory.  If not found there, the parent of the
parent.  And so forth until either the checkout database is found
or the search reaches the root of the file system.  (In the latter case,
Fossil returns an error, of course.)  Once the checkout database is
located, it is used to locate the repository database.

Notice that the checkout database contains a pointer to the repository
database but that the repository database has no record of the checkout
databases.  That means that a working checkout directory tree can be
freely renamed or copied or deleted without consequence.  But the
repository database file, on the other hand, has to stay in the same
place with the same name or else the open checkout databases will not
be able to find it.

A checkout database is created by the [/help/open | fossil open] command.
A checkout database is deleted by [/help/close | fossil close].  The
fossil close command really isn't needed; one can accomplish the same
thing simply by deleting the checkout database.

Note that the stash, the undo stack, and the state of the bisect command
are all contained within the checkout database.  That means that the
fossil close command will delete all stash content, the undo stack, and
the bisect state.  The close command is not undoable.  Use it with care.

<h2>3.0 See Also</h2>

  *  [./makefile.wiki | The Fossil Build Process]
  *  [./contribute.wiki | How To Contribute Code To Fossil]
  *  [./adding_code.wiki | Adding New Features To Fossil]
Added www/th1-hooks.md.






































































































































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TH1 Hooks
=========

<big><big><big><font color="red">** DRAFT **</font></big></big></big>

The **TH1 hooks** feature allows <a href="th1.md">TH1</a> scripts to be
configured that can monitor, create, alter, or cancel the execution of
Fossil commands and web pages.

This feature requires the TH1 hooks feature to be enabled at compile-time.
Additionally, the "th1-hooks" repository setting must be enabled at runtime
in order to successfully make use of this feature.

TH1 Hook Related User-Defined Procedures
----------------------------------------

In order to activate TH1 hooks, one or more of the following user-defined
procedures should be defined, generally from within the "th1-setup" script
(setting) for a repository.  The following bullets summarize the available
TH1 hooks:

  *  command\_hook -- _Called before execution of a command._
  *  command\_notify -- _Called after execution of a command._
  *  webpage\_hook -- _Called before rendering of a web page._
  *  webpage\_notify -- _Called after rendering of a web page._

TH1 Hook Related Variables for Commands
---------------------------------------

  *  cmd\_name -- _Name of command being executed._
  *  cmd\_args -- _Current command line arguments._
  *  cmd\_flags -- _Bitmask of CMDFLAG values for the command being executed._

TH1 Hook Related Variables for Web Pages
----------------------------------------

  *  web\_name -- _Name of web page being rendered._
  *  web\_args -- _Current web page arguments._
  *  web\_flags -- _Bitmask of CMDFLAG values for the web page being rendered._

<a id="cmdReturnCodes"></a>TH1 Hook Related Return Codes for Commands
-----------------------------------------------------------------------

  *  TH\_OK -- _Command will be executed, notification will be executed._
  *  TH\_ERROR -- _Command will be skipped, notification will be skipped,
                  error message will be emitted._
  *  TH\_BREAK -- _Command will be skipped, notification will be skipped._
  *  TH\_RETURN -- _Command will be executed, notification will be skipped._
  *  TH\_CONTINUE -- _Command will be skipped, notification will be executed._

For commands that are not included in the Fossil binary, allowing their
execution will cause the standard "unknown command" error message to be
generated, which will typically exit the process.  Therefore, adding a
new command generally requires using the TH_CONTINUE return code.

<a id="webReturnCodes"></a>TH1 Hook Related Return Codes for Web Pages
------------------------------------------------------------------------

  *  TH\_OK -- _Web page will be rendered, notification will be executed._
  *  TH\_ERROR -- _Web page will be skipped, notification will be skipped,
                  error message will be emitted._
  *  TH\_BREAK -- _Web page will be skipped, notification will be skipped._
  *  TH\_RETURN -- _Web page will be rendered, notification will be skipped._
  *  TH\_CONTINUE -- _Web page will be skipped, notification will be executed._

For web pages that are not included in the Fossil binary, allowing their
rendering will cause the standard "Not Found" error message to be generated,
which will cause an HTTP 404 status code to be sent.  Therefore, adding a
new web page generally requires using the TH_CONTINUE return code.

<a id="triggerReturnCodes"></a>Triggering TH1 Return Codes from a Script
--------------------------------------------------------------------------

  *  TH\_OK -- _This is the default return code, nothing special needed._
  *  TH\_ERROR -- _Use the **error** command._
  *  TH\_BREAK -- _Use the **break** command._
  *  TH\_RETURN -- _Use the **return -code 5** command._
  *  TH\_CONTINUE -- _Use the **continue** command._

<a id="command_hook"></a>TH1 command_hook Procedure
-----------------------------------------------------

  *  command\_hook

This user-defined procedure, if present, is called just before the
execution of a command.  The name of the command being executed will
be stored in the "cmd\_name" global variable.  The arguments to the
command being executed will be stored in the "cmd\_args" global variable.
The associated CMDFLAG value will be stored in the "cmd\_flags" global
variable.  Before exiting, the procedure should trigger the return
<a href="#cmdReturnCodes">code</a> that corresponds to the desired action
to take next.

<a id="command_notify"></a>TH1 command_notify Procedure
---------------------------------------------------------

  *  command\_notify

This user-defined procedure, if present, is called just after the
execution of a command.  The name of the command being executed will
be stored in the "cmd\_name" global variable.  The arguments to the
command being executed will be stored in the "cmd\_args" global variable.
The associated CMDFLAG value will be stored in the "cmd\_flags" global
variable.  Before exiting, the procedure should trigger the return
<a href="#cmdReturnCodes">code</a> that corresponds to the desired action
to take next.

<a id="webpage_hook"></a>TH1 webpage_hook Procedure
-----------------------------------------------------

  *  webpage\_hook

This user-defined procedure, if present, is called just before the
rendering of a web page.  The name of the web page being rendered will
be stored in the "web\_name" global variable.  The arguments to the
web page being rendered will be stored in the "web\_args" global variable.
The associated CMDFLAG value will be stored in the "web\_flags" global
variable.  Before exiting, the procedure should trigger the return
<a href="#webReturnCodes">code</a> that corresponds to the desired action
to take next.

<a id="webpage_notify"></a>TH1 webpage_notify Procedure
---------------------------------------------------------

  *  webpage\_notify

This user-defined procedure, if present, is called just after the
rendering of a web page.  The name of the web page being rendered will
be stored in the "web\_name" global variable.  The arguments to the
web page being rendered will be stored in the "web\_args" global variable.
The associated CMDFLAG value will be stored in the "web\_flags" global
variable.  Before exiting, the procedure should trigger the return
<a href="#webReturnCodes">code</a> that corresponds to the desired action
to take next.
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TH1 Scripts
===========

TH1 is a very small scripting language used to help generate web-page
content in Fossil.

Origins
-------

TH1 began as a minimalist re-implementation of the Tcl scripting language.
There was a need to test the SQLite library on Symbian phones, but at that
time all of the test cases for SQLite were written in Tcl and Tcl could not
be easily compiled on the SymbianOS.  So TH1 was developed as a cut-down
version of Tcl that would facilitate running the SQLite test scripts on
SymbianOS.

Fossil was first being designed at about the same time that TH1 was
being developed for testing SQLite on SymbianOS.
Early prototypes of Fossil were written in pure Tcl.  But as the development
shifted toward the use of C-code, the need arose to have a Tcl-like
scripting language to help with code generation.  TH1 was small and
light-weight and used minimal resources and seemed ideally suited for the
task.

The name "TH1" stands "Test Harness 1", since that was its original purpose.

Overview
--------

TH1 is a string-processing language.  All values are strings.  Any numerical
operations are accomplished by converting from string to numeric, performing
the computation, then converting the result back into a string.  (This might
seem inefficient, but it is faster than people imagine, and numeric
computations do not come up very often for the kinds of work that TH1 does,
so it has never been a factor.)

A TH1 script consists of a sequence of commands.
Each command is terminated by the first *unescaped* newline or ";" character.
The text of the command (excluding the newline or semicolon terminator)
is broken into space-separated tokens.  The first token is the command
name and subsequent tokens are the arguments.  In this sense, TH1 syntax
is similar to the familiar command-line shell syntax.

A token is any sequence of characters other than whitespace and semicolons.
Text inside double-quotes is a single token even if it includes
whitespace and semicolons. Text within {...} pairs is also a
single token, which is useful because curly braces are easier to “pairâ€
and nest properly than double-quotes.

The nested {...} form of tokens is important because it allows TH1 commands
to have an appearance similar to C/C++.  It is important to remember, though,
that a TH1 script is really just a list of text commands, not a context-free
language with a grammar like C/C++.  This can be confusing to long-time
C/C++ programmers because TH1 does look a lot like C/C++, but the semantics
of TH1 are closer to FORTH or Lisp than they are to C.

Consider the `if` command in TH1.

    if {$current eq "dev"} {
      puts "hello"
    } else {
      puts "world"
    }

The example above is a single command.  The first token, and the name
of the command, is `if`.
The second token is `$current eq "dev"` - an expression.  (The outer {...}
are removed from each token by the command parser.)  The third token
is the `puts "hello"`, with its whitespace and newlines.  The fourth token
is `else` and the fifth and last token is `puts "world"`.

The `if` command evaluates its first argument (the second token)
as an expression, and if that expression is true, evaluates its
second argument (the third token) as a TH1 script.
If the expression is false and the third argument is `else`, then
the fourth argument is evaluated as a TH1 expression.

So, you see, even though the example above spans five lines, it is really
just a single command.

All of this also explains the emphasis on *unescaped* characters above:
the curly braces `{ }` are string quoting characters in Tcl/TH1, not
block delimiters as in C. This is how we can have a command that extends
over multiple lines. It is also why the `else` keyword must be cuddled
up with the closing brace for the `if` clause's scriptlet. The following
is invalid Tcl/TH1:

    if {$current eq "dev"} {
      puts "hello"
    }
    else {
      puts "world"
    }

If you try to run this under either Tcl or TH1, the interpreter will
tell you that there is no `else` command, because with the newline on
the third line, you terminated the `if` command.

Occasionally in Tcl/TH1 scripts, you may need to use a backslash at the
end of a line to allow a command to extend over multiple lines without
being considered two separate commands. Here's an example from one of
Fossil's test scripts:

    return [lindex [regexp -line -inline -nocase -- \
        {^uuid:\s+([0-9A-F]{40}) } [eval [getFossilCommand \
        $repository "" info trunk]]] end]

Those backslashes allow the command to wrap nicely within a standard
terminal width while telling the interpreter to consider those three
lines as a single command.


Summary of Core TH1 Commands
----------------------------

The original Tcl language (after which TH1 is modeled) has a very rich
repertoire of commands.  TH1, as it is designed to be minimalist and
embedded has a greatly reduced command set.  The following bullets
summarize the commands available in TH1:

  *  array exists VARNAME
  *  array names VARNAME
  *  break
  *  catch SCRIPT ?VARIABLE?
  *  continue
  *  error ?STRING?
  *  expr EXPR
  *  for INIT-SCRIPT TEST-EXPR NEXT-SCRIPT BODY-SCRIPT
  *  foreach VARIABLE-LIST VALUE-LIST BODY-SCRIPT
  *  if EXPR SCRIPT (elseif EXPR SCRIPT)* ?else SCRIPT?
  *  info commands
  *  info exists VARNAME
  *  info vars
  *  lappend VARIABLE TERM ...
  *  lindex LIST INDEX
  *  list ARG ...
  *  llength LIST
  *  lsearch LIST STRING
  *  proc NAME ARG-LIST BODY-SCRIPT
  *  rename OLD NEW
  *  return ?-code CODE? ?VALUE?
  *  set VARNAME VALUE
  *  string compare STR1 STR2
  *  string first NEEDLE HAYSTACK ?START-INDEX?
  *  string index STRING INDEX
  *  string is CLASS STRING
  *  string last NEEDLE HAYSTACK ?START-INDEX?
  *  string match PATTERN STRING
  *  string length STRING
  *  string range STRING FIRST LAST
  *  string repeat STRING COUNT
  *  unset VARNAME
  *  uplevel ?LEVEL? SCRIPT
  *  upvar ?FRAME? OTHERVAR MYVAR ?OTHERVAR MYVAR?

All of the above commands work as in the original Tcl.  Refer to the
<a href="https://www.tcl-lang.org/man/tcl/contents.htm">Tcl documentation</a>
for details.

Summary of Core TH1 Variables
-----------------------------

  *  tcl\_platform(engine) -- _This will always have the value "TH1"._
  *  tcl\_platform(platform) -- _This will have the value "windows" or "unix"._
  *  th\_stack\_trace -- _This will contain error stack information._

TH1 Extended Commands
---------------------

There are many new commands added to TH1 and used to access the special
features of Fossil.  The following is a summary of the extended commands:

  *  [anoncap](#anoncap)
  *  [anycap](#anycap)
  *  [artifact](#artifact)
  *  [builtin_request_js](#bireqjs)
  *  [capexpr](#capexpr)
  *  [captureTh1](#captureTh1)
  *  [cgiHeaderLine](#cgiHeaderLine)
  *  [checkout](#checkout)
  *  [combobox](#combobox)
  *  [copybtn](#copybtn)
  *  [date](#date)
  *  [decorate](#decorate)
  *  [defHeader](#defHeader)
  *  [dir](#dir)
  *  [enable\_htmlify](#enable_htmlify)
  *  [enable\_output](#enable_output)
  *  [encode64](#encode64)
  *  [getParameter](#getParameter)
  *  [glob\_match](#glob_match)
  *  [globalState](#globalState)
  *  [hascap](#hascap)
  *  [hasfeature](#hasfeature)
  *  [html](#html)
  *  [htmlize](#htmlize)
  *  [http](#http)
  *  [httpize](#httpize)
  *  [insertCsrf](#insertCsrf)
  *  [linecount](#linecount)
  *  [markdown](#markdown)
  *  [nonce](#nonce)
  *  [puts](#puts)
  *  [query](#query)
  *  [randhex](#randhex)
  *  [redirect](#redirect)
  *  [regexp](#regexp)
  *  [reinitialize](#reinitialize)
  *  [render](#render)
  *  [repository](#repository)
  *  [searchable](#searchable)
  *  [setParameter](#setParameter)
  *  [setting](#setting)
  *  [stime](#stime)
  *  [styleHeader](#styleHeader)
  *  [styleFooter](#styleFooter)
  *  [styleScript](#styleScript)
  *  [submenu](#submenu)
  *  [tclEval](#tclEval)
  *  [tclExpr](#tclExpr)
  *  [tclInvoke](#tclInvoke)
  *  [tclIsSafe](#tclIsSafe)
  *  [tclMakeSafe](#tclMakeSafe)
  *  [tclReady](#tclReady)
  *  [trace](#trace)
  *  [unversioned content](#unversioned_content)
  *  [unversioned list](#unversioned_list)
  *  [utime](#utime)
  *  [verifyCsrf](#verifyCsrf)
  *  [verifyLogin](#verifyLogin)
  *  [wiki](#wiki)

Each of the commands above is documented by a block comment above their
implementation in the th\_main.c or th\_tcl.c source files.

All commands starting with "tcl", with the exception of "tclReady",
require the Tcl integration subsystem be included at compile-time.
Additionally, the "tcl" repository setting must be enabled at runtime
in order to successfully make use of these commands.

<a id="anoncap"></a>TH1 anoncap Command
-----------------------------------------

Deprecated: prefer [capexpr](#capexpr) instead.

  *  anoncap STRING...

Returns true if the anonymous user has all of the capabilities listed
in STRING.

<a id="anycap"></a>TH1 anycap Command
---------------------------------------

Deprecated: prefer [capexpr](#capexpr) instead.

  *  anycap STRING

Returns true if the current user user has any one of the capabilities
listed in STRING.

<a id="artifact"></a>TH1 artifact Command
-------------------------------------------

  *  artifact ID ?FILENAME?

Attempts to locate the specified artifact and return its contents.  An
error is generated if the repository is not open or the artifact cannot
be found.


<a id="bireqjs"></a>TH1 builtin_request_js Command
--------------------------------------------------

  *  builtin_request_js NAME

NAME must be the name of one of the 
[built-in javascript source files](/dir?ci=trunk&type=flat&name=src&re=js$).
This command causes that javascript file to be appended to the delivered
document.



<a id="capexpr"></a>TH1 capexpr Command
-----------------------------------------------------

  *  capexpr CAPABILITY-EXPR

The capability expression is a list. Each term of the list is a
cluster of [capability letters](./caps/ref.html). 
The overall expression is true if any
one term is true. A single term is true if all letters within that
term are true. Or, if the term begins with "!", then the term is true
if none of the terms are true. Or, if the term begins with "@" then
the term is true if all of the capability letters in that term are
available to the "anonymous" user. Or, if the term is "*" then it is
always true.

Examples:

```
capexpr {j o r}               True if any one of j, o, or r are available
capexpr {oh}                  True if both o and h are available
capexpr {@2 @3 4 5 6}         2 or 3 available for anonymous or one of
                              4, 5 or 6 is available for the user
capexpr L                     True if the user is logged in
capexpr !L                    True if the user is not logged in
```

The `L` pseudo-capability is intended only to be used on its own or with
the `!` prefix for implementing login/logout menus via the `mainmenu`
site configuration option:

```
Login     /login        !L  {}
Logout    /logout        L  {}
```

i.e. if the user is logged in, show the "Logout" link, else show the
"Login" link.

<a id="captureTh1"></a>TH1 captureTh1 Command
-----------------------------------------------------

  *  captureTh1 STRING

Executes its single argument as TH1 code and captures any
TH1-generated output as a string, which becomes the result of the
function call. e.g. any `puts` calls made from that block will not
generate any output, and instead their output will become part of the
result string.


<a id="cgiHeaderLine"></a>TH1 cgiHeaderLine Command
-----------------------------------------------------

  *  cgiHeaderLine line

Adds the specified line to the CGI header.

<a id="checkout"></a>TH1 checkout Command
-------------------------------------------

  *  checkout ?BOOLEAN?

Return the fully qualified directory name of the current checkout or an
empty string if it is not available.  Optionally, it will attempt to find
the current checkout, opening the configuration ("user") database and the
repository as necessary, if the boolean argument is non-zero.

<a id="combobox"></a>TH1 combobox Command
-------------------------------------------

  *  combobox NAME TEXT-LIST NUMLINES

Generates and emits an HTML combobox.  NAME is both the name of the
CGI parameter and the name of a variable that contains the currently
selected value.  TEXT-LIST is a list of possible values for the
combobox.  NUMLINES is 1 for a true combobox.  If NUMLINES is greater
than one then the display is a listbox with the number of lines given.

<a id="copybtn"></a>TH1 copybtn Command
-----------------------------------------

  *  copybtn TARGETID FLIPPED TEXT ?COPYLENGTH?

Output TEXT with a click-to-copy button next to it. Loads the copybtn.js
Javascript module, and generates HTML elements with the following IDs:

  *  TARGETID:       The `<span>` wrapper around TEXT.
  *  copy-TARGETID:  The `<span>` for the copy button.

If the FLIPPED argument is non-zero, the copy button is displayed after TEXT.

The optional COPYLENGTH argument defines the length of the substring of TEXT
copied to clipboard:

  *  <= 0:   No limit (default if the argument is omitted).
  *  >= 3:   Truncate TEXT after COPYLENGTH (single-byte) characters.
  *     1:   Use the "hash-digits" setting as the limit.
  *     2:   Use the length appropriate for URLs as the limit (defined at
             compile-time by `FOSSIL_HASH_DIGITS_URL`, defaults to 16).

<a id="date"></a>TH1 date Command
-----------------------------------

  *  date ?-local?

Return a string which is the current time and date.  If the -local
option is used, the date appears using localtime instead of UTC.

<a id="decorate"></a>TH1 decorate Command
-------------------------------------------

  *  decorate STRING

Renders STRING as wiki content; however, only links are handled.  No
other markup is processed.

<a id="defHeader"></a>TH1 defHeader Command
---------------------------------------------

  *  defHeader

Returns the default page header.

<a id="dir"></a>TH1 dir Command
---------------------------------

  * dir CHECKIN ?GLOB? ?DETAILS?

Returns a list containing all files in CHECKIN. If GLOB is given only
the files matching the pattern GLOB within CHECKIN will be returned.
If DETAILS is non-zero, the result will be a list-of-lists, with each
element containing at least three elements: the file name, the file
size (in bytes), and the file last modification time (relative to the
time zone configured for the repository).

<a id="enable_htmlify"></a>TH1 enable\_htmlify Command
------------------------------------------------------

  *  enable\_htmlify
  *  enable\_htmlify ?TRACE-LABEL? BOOLEAN

By default, certain output from `puts` and similar commands is escaped
for HTML. The first call form returns the current state of that
feature: `1` for on and `0` for off. The second call form enables
(non-0) or disables (0) that feature and returns the *pre-call* state
of that feature (so that a second call can pass that value to restore
it to its previous state). The optional `TRACE-LABEL` argument causes
the TH1 tracing output (if enabled) to add a marker when the second
form of this command is invoked, and includes that label and the
boolean argument's value in the trace. If tracing is disabled, that
argument has no effect.


<a id="enable_output"></a>TH1 enable\_output Command
------------------------------------------------------

  *  enable\_output BOOLEAN

Enable or disable sending output when the combobox, copybtn, puts, or wiki
commands are used.

<a id="encode64"></a>TH1 encode64 Command
-------------------------------------------

  *  encode64 STRING

Encode the specified string using Base64 and return the result.

<a id="getParameter"></a>TH1 getParameter Command
---------------------------------------------------

  *  getParameter NAME ?DEFAULT?

Returns the value of the specified query parameter or the specified
default value when there is no matching query parameter.

<a id="glob_match"></a>TH1 glob\_match Command
------------------------------------------------

  *  glob\_match ?-one? ?--? patternList string

Checks the string against the specified glob pattern -OR- list of glob
patterns and returns non-zero if there is a match.

<a id="globalState"></a>TH1 globalState Command
-------------------------------------------------

  *  globalState NAME ?DEFAULT?

Returns a string containing the value of the specified global state
variable -OR- the specified default value.  The supported items are:

  1. **checkout** -- _Active local checkout directory, if any._
  1. **configuration** -- _Active configuration database file name, if any._
  1. **executable** -- _Fully qualified executable file name._
  1. **flags** -- _TH1 initialization flags._
  1. **log** -- _Error log file name, if any._
  1. **repository** -- _Active local repository file name, if any._
  1. **top** -- _Base path for the active server instance, if applicable._
  1. **user** -- _Active user name, if any._
  1. **vfs** -- _SQLite VFS in use, if overridden._

Attempts to query for unsupported global state variables will result
in a script error.  Additional global state variables may be exposed
in the future.

<a id="hascap"></a>TH1 hascap Command
---------------------------------------

Deprecated: prefer [capexpr](#capexpr) instead.

  *  hascap STRING...

Returns true if the current user has all of the capabilities listed
in STRING.

<a id="hasfeature"></a>TH1 hasfeature Command
-----------------------------------------------

  *  hasfeature STRING

Returns true if the binary has the given compile-time feature enabled.
The possible features are:

  1. **ssl** -- _Support for the HTTPS transport._
  1. **legacyMvRm** -- _Support for legacy mv/rm command behavior._
  1. **execRelPaths** -- _Use relative paths with external diff/gdiff._
  1. **th1Docs** -- _Support for TH1 in embedded documentation._
  1. **th1Hooks** -- _Support for TH1 command and web page hooks._
  1. **tcl** -- _Support for Tcl integration._
  1. **useTclStubs** -- _Tcl stubs enabled in the Tcl headers._
  1. **tclStubs** -- _Uses Tcl stubs (i.e. linking with stubs library)._
  1. **tclPrivateStubs** -- _Uses Tcl private stubs (i.e. header-only)._
  1. **json** -- _Support for the JSON APIs._
  1. **markdown** -- _Support for Markdown documentation format._
  1. **unicodeCmdLine** -- _The command line arguments are Unicode._
  1. **dynamicBuild** -- _Dynamically linked to libraries._
  1. **mman** -- _Uses POSIX memory APIs from "sys/mman.h"._
  1. **see** -- _Uses the SQLite Encryption Extension._

Specifying an unknown feature will return a value of false, it will not
raise a script error.

<a id="html"></a>TH1 html Command
-----------------------------------

  *  html STRING

Outputs the STRING escaped for HTML.

<a id="htmlize"></a>TH1 htmlize Command
-----------------------------------------

  *  htmlize STRING

Escape all characters of STRING which have special meaning in HTML.
Returns the escaped string.

<a id="http"></a>TH1 http Command
-----------------------------------

  *  http ?-asynchronous? ?--? url ?payload?

Performs an HTTP or HTTPS request for the specified URL.  If a
payload is present, it will be interpreted as text/plain and
the POST method will be used; otherwise, the GET method will
be used.  Upon success, if the -asynchronous option is used, an
empty string is returned as the result; otherwise, the response
from the server is returned as the result.  Synchronous requests
are not currently implemented.

<a id="httpize"></a>TH1 httpize Command
-----------------------------------------

  *  httpize STRING

Escape all characters of STRING which have special meaning in URI
components.  Returns the escaped string.

<a id="insertCsrf"></a>TH1 insertCsrf Command
-----------------------------------------------

  *  insertCsrf

While rendering a form, call this command to add the Anti-CSRF token
as a hidden element of the form.

<a id="linecount"></a>TH1 linecount Command
---------------------------------------------

  *  linecount STRING MAX MIN

Returns one more than the number of `\n` characters in STRING.  But
never returns less than MIN or more than MAX.

<a id="markdown"></a>TH1 markdown Command
-------------------------------------------

  *  markdown STRING

Renders the input string as markdown.  The result is a two-element list.
The first element contains the body, rendered as HTML.  The second element
is the text-only title string.

<a id="nonce"></a>TH1 nonce Command
-------------------------------------

  *  nonce

Returns the value of the cryptographic nonce for the request being processed.

<a id="puts"></a>TH1 puts Command
-----------------------------------

  *  puts STRING

Outputs the STRING unchanged, where "unchanged" might, depending on
the context, mean "with some characters escaped for HTML."

<a id="query"></a>TH1 query Command
-------------------------------------

  *  query ?-nocomplain? SQL CODE

Runs the SQL query given by the SQL argument.  For each row in the result
set, run CODE.

In SQL, parameters such as $var are filled in using the value of variable
"var".  Result values are stored in variables with the column name prior
to each invocation of CODE.

<a id="randhex"></a>TH1 randhex Command
-----------------------------------------

  *  randhex N

Returns a string of N*2 random hexadecimal digits with N<50.  If N is
omitted, use a value of 10.

<a id="redirect"></a>TH1 redirect Command
-------------------------------------------

  *  redirect URL ?withMethod?

Issues an HTTP redirect to the specified URL and then exits the process.
By default, an HTTP status code of 302 is used.  If the optional withMethod
argument is present and non-zero, an HTTP status code of 307 is used, which
should force the user agent to preserve the original method for the request
(e.g. GET, POST) instead of (possibly) forcing the user agent to change the
method to GET.

<a id="regexp"></a>TH1 regexp Command
---------------------------------------

  *  regexp ?-nocase? ?--? exp string

Checks the string against the specified regular expression and returns
non-zero if it matches.  If the regular expression is invalid or cannot
be compiled, an error will be generated.

<a id="reinitialize"></a>TH1 reinitialize Command
---------------------------------------------------

  *  reinitialize ?FLAGS?

Reinitializes the TH1 interpreter using the specified flags.

<a id="render"></a>TH1 render Command
---------------------------------------

  *  render STRING

Renders the TH1 template and writes the results.

<a id="repository"></a>TH1 repository Command
-----------------------------------------------

  *  repository ?BOOLEAN?

Returns the fully qualified file name of the open repository or an empty
string if one is not currently open.  Optionally, it will attempt to open
the repository if the boolean argument is non-zero.

<a id="searchable"></a>TH1 searchable Command
-----------------------------------------------

  *  searchable STRING...

Return true if searching in any of the document classes identified
by STRING is enabled for the repository and user has the necessary
capabilities to perform the search.  The possible document classes
are:

  1. **c** -- _Check-in comments_
  1. **d** -- _Embedded documentation_
  1. **t** -- _Tickets_
  1. **w** -- _Wiki_

To be clear, only one of the document classes identified by each STRING
needs to be searchable in order for that argument to be true.  But all
arguments must be true for this routine to return true.  Hence, to see
if ALL document classes are searchable:

    if {[searchable c d t w]} {...}

But to see if ANY document class is searchable:

    if {[searchable cdtw]} {...}

This command is useful for enabling or disabling a "Search" entry on the
menu bar.

<a id="setParameter"></a>TH1 setParameter Command
---------------------------------------------------

  *  setParameter NAME VALUE

Sets the value of the specified query parameter.

<a id="setting"></a>TH1 setting Command
-----------------------------------------

  *  setting name

Gets and returns the value of the specified setting.

<a id="stime"></a>TH1 stime Command
-------------------------------------

  *  stime

Returns the number of microseconds of CPU time consumed by the current
process in system space.

<a id="styleHeader"></a>TH1 styleHeader Command
-------------------------------------------------

  *  styleHeader TITLE

Render the configured style header for the selected skin.

<a id="styleFooter"></a>TH1 styleFooter Command
-------------------------------------------------

  *  styleFooter

Render the configured style footer for the selected skin.

<a id="styleScript"></a>TH1 styleScript Command
-------------------------------------------------

  *  styleScript

Render the configured JavaScript for the selected skin.

<a id="submenu"></a>TH1 submenu Command
-----------------------------------------

  *  submenu link LABEL URL

Add hyperlink to the submenu of the current page.

<a id="tclEval"></a>TH1 tclEval Command
-----------------------------------------

**This command requires the Tcl integration feature.**

  *  tclEval arg ?arg ...?

Evaluates the Tcl script and returns its result verbatim.  If a Tcl script
error is generated, it will be transformed into a TH1 script error.  The
Tcl interpreter will be created automatically if it has not been already.

<a id="tclExpr"></a>TH1 tclExpr Command
-----------------------------------------

**This command requires the Tcl integration feature.**

  *  tclExpr arg ?arg ...?

Evaluates the Tcl expression and returns its result verbatim.  If a Tcl
script error is generated, it will be transformed into a TH1 script
error.  The Tcl interpreter will be created automatically if it has not
been already.

<a id="tclInvoke"></a>TH1 tclInvoke Command
---------------------------------------------

**This command requires the Tcl integration feature.**

  *  tclInvoke command ?arg ...?

Invokes the Tcl command using the supplied arguments.  No additional
substitutions are performed on the arguments.  The Tcl interpreter
will be created automatically if it has not been already.

<a id="tclIsSafe"></a>TH1 tclIsSafe Command
---------------------------------------------

**This command requires the Tcl integration feature.**

  *  tclIsSafe

Returns non-zero if the Tcl interpreter is "safe".  The Tcl interpreter
will be created automatically if it has not been already.

<a id="tclMakeSafe"></a>TH1 tclMakeSafe Command
-------------------------------------------------

**This command requires the Tcl integration feature.**

  *  tclMakeSafe

Forces the Tcl interpreter into "safe" mode by removing all "unsafe"
commands and variables.  This operation cannot be undone.  The Tcl
interpreter will remain "safe" until the process terminates.  The Tcl
interpreter will be created automatically if it has not been already.

<a id="tclReady"></a>TH1 tclReady Command
-------------------------------------------

  *  tclReady

Returns true if the binary has the Tcl integration feature enabled and it
is currently available for use by TH1 scripts.

<a id="trace"></a>TH1 trace Command
-------------------------------------

  *  trace STRING

Generates a TH1 trace message if TH1 tracing is enabled.

<a id="unversioned_content"></a>TH1 unversioned content Command
-----------------------------------------------------------------

  *  unversioned content FILENAME

Attempts to locate the specified unversioned file and return its contents.
An error is generated if the repository is not open or the unversioned file
cannot be found.

<a id="unversioned_list"></a>TH1 unversioned list Command
-----------------------------------------------------------

  *  unversioned list

Returns a list of the names of all unversioned files held in the local
repository.  An error is generated if the repository is not open.

<a id="utime"></a>TH1 utime Command
-------------------------------------

  *  utime

Returns the number of microseconds of CPU time consumed by the current
process in user space.

<a id="verifyCsrf"></a>TH1 verifyCsrf Command
-----------------------------------------------

  *  verifyCsrf

Before using the results of a form, first call this command to verify
that the Anti-CSRF token is present and is valid.  If the Anti-CSRF token
is missing or is incorrect, that indicates a cross-site scripting attack.
If the event of an attack is detected, an error message is generated and
all further processing is aborted.

<a id="verifyLogin"></a>TH1 verifyLogin Command
-------------------------------------------------

  *  verifyLogin

Returns non-zero if the specified user name and password represent a
valid login for the repository.

<a id="wiki"></a>TH1 wiki Command
-----------------------------------

  *  wiki STRING

Renders STRING as wiki content.

Tcl Integration Commands
------------------------

When the Tcl integration subsystem is enabled, several commands are added
to the Tcl interpreter.  They are used to allow Tcl scripts access to the
Fossil functionality provided via TH1.  The following is a summary of the
Tcl commands:

  *  th1Eval
  *  th1Expr

<a id="th1Eval"></a>Tcl th1Eval Command
-----------------------------------------

**This command requires the Tcl integration feature.**

  *  th1Eval arg

Evaluates the TH1 script and returns its result verbatim.  If a TH1 script
error is generated, it will be transformed into a Tcl script error.

<a id="th1Expr"></a>Tcl th1Expr Command
-----------------------------------------

**This command requires the Tcl integration feature.**

  *  th1Expr arg

Evaluates the TH1 expression and returns its result verbatim.  If a TH1
script error is generated, it will be transformed into a Tcl script error.
Changes to www/theory1.wiki.
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<title>Thoughts On The Design Of The Fossil DVCS</title>
<h1 align="center">Thoughts On The Design Of The Fossil DVCS</h1>

Two questions (or criticisms) that arise frequently regarding Fossil
can be summarized as follows:

  1.  Why is Fossil based on SQLite instead of a distributed NoSQL database?

  2.  Why is Fossil written in C instead of a modern high-level language?

Neither question can be answered directly because they are both
based on false assumptions.  We claim that Fossil is not based on SQLite
at all and that Fossil is not based on a distributed NoSQL database
because Fossil is a distributed NoSQL database.  And, Fossil does use
a modern high-level language for its implementation, namely SQL.

<h2>Fossil Is A NoSQL Database</h2>

We begin with the first question:  Fossil is not based on a distributed
NoSQL database because Fossil <u><i>is</i></u> a distributed NoSQL database.
Fossil is <u>not</u> based on SQLite. 
Fossil is <u>not</u> based on SQLite.
The current implementation of Fossil uses
SQLite as a local store for the content of the distributed database and as
a cache for meta-information about the distributed database that is precomputed
for quick and easy presentation.  But the use of SQLite in this role is an
implementation detail and is not fundamental to the design.  Some future
version of Fossil might do away with SQLite and substitute a pile-of-files or
a key/value database in place of SQLite.  
a key/value database in place of SQLite.
(Actually, that is very unlikely
to happen since SQLite works amazingly well in its current role, but the point
is that omitting SQLite from Fossil is a theoretical possibility.)

The underlying database that Fossil implements has nothing to do with
SQLite, or SQL, or even relational database theory.  The underlying
database is very simple:  it is an unordered collection of "artifacts".
An artifact is a list of bytes - a "file" in the usual manner of thinking.
Many artifacts are simply the content of source files that have
been checked into the Fossil repository.  Call these "content artifacts".
Other artifacts, known as
"control artifacts", contain ASCII text in a particular format that
defines relationships between other artifacts, such as which
content artifacts that go together to form a particular version of the
project.  Each artifact is named by its SHA1 hash and is thus immutable.
project.  Each artifact is named by its SHA1 or SHA3-256 hash and is
thus immutable.
Artifacts can be added to the database but not removed (if we ignore
the exceptional case of [./shunning.wiki | shunning].)  Repositories
synchronize by computing the union of their artifact sets.  SQL and
relation theory play no role in any of this.

SQL enters the picture only in the implementation details.  The current
implementation of Fossil stores each artifact as a BLOB in an SQLite
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So really, Fossil works with two separate databases.  There is the
bag-of-artifacts database which is non-relational and distributed (like
a NoSQL database) and there is the local relational database.  The
bag-of-artifacts database has a fixed format and is what defines a Fossil
repository.  Fossil will never modify the file format of the bag-of-artifacts
database in an incompatible way because to do so would be to make something
that is no longer "Fossil".  The local relational database, on the other hand,
is a cache that contains information derived from the bag-of-artifacts.  
is a cache that contains information derived from the bag-of-artifacts.
The schema of the local relational database changes from time to time as
the Fossil implementation is enhanced, and the content is recomputed from
the unchanging bag of artifacts.  The local relational database is an
implementation detail which currently happens to use SQLite.

Another way to think of the relational tables in a Fossil repository is
as an index for the artifacts.  Without the relational tables,
to generate a report like a timeline would require scanning every artifact -
the equivalent of a full table scan.  The relational tables hold pointers
the the relevant artifacts in presorted order so that generating a timeline
the equivalent of a full table scan.  The relational tables hold pointers to
the relevant artifacts in presorted order so that generating a timeline
is much more efficient.  So like an index in a relational database, the
relational tables in an Fossil repository do not add any new information,
relational tables in a Fossil repository do not add any new information,
they merely make the information in the artifacts faster and easier to
look up.

Fossil is not "based" on SQLite.  Fossil simply exploits SQLite as
a powerful tool to make the implementation easier.
And Fossil doesn't use a distributed
NoSQL database because Fossil is a distributed NoSQL database.  That answers
the first question.

<h2>SQL Is A High-Level Scripting Language</h2>

The second concern states that Fossil does not use a high-level scripting
language.  But that is not true.  Fossil uses SQL (as implemented by SQLite) 
language.  But that is not true.  Fossil uses SQL (as implemented by SQLite)
as its scripting language.

This misunderstanding likely arises because people fail
to appreciate that SQL is a programming language.  People are taught that SQL
is a "query language" as if that were somehow different from a
"programming language".  But they really are two different favors of the
"programming language".  But they really are two different flavors of the
same thing.  I find that people do better with SQL if they think of
SQL as a programming language and each statement
of SQL is a separate program.  SQL is a peculiar programming language
in that one uses SQL to specify <i>what</i> to compute whereas in
most other programming languages one specifies <i>how</i>
to carry out the computation.
This difference means that SQL
is an extraordinary high-level programming language, but it is still
just a programming language.

For certain types of problems, SQL has a huge advantage over other
programming languages because it is so high level and because it allows
programmers to focus more on the <i>what</i> and less of the <i>how</i>
programmers to focus more on the <i>what</i> and less on the <i>how</i>
of a computation.  In other words,
programmers tend to think about problems at a much higher level when
using SQL; this can result in better applications.
SQL is also very dense.
In practice, this often means that a few
lines of SQL can often replace hundreds or thousands of lines of
procedural code, with a corresponding decrease in programming effort
and opportunities to introduce bugs.
Fossil happens to be one of those problems for which SQL is well suited.

Much of the "heavy lifting" within the Fossil implementation is carried
out using SQL statements.  It is true that these SQL statements are glued
together with C code, but it turns out that C works surprisingly well in
that role.  Several early prototypes of Fossil were written in a scripting
language (TCL).  We normally find that TCL programs are shorter than the
equivalent C code by a factor of 10 or more.  But in the case of Fossil,
the use of TCL was actually making the code longer and more difficult to 
the use of TCL was actually making the code longer and more difficult to
understand.
And so in the final design, we switched from TCL to C in order to make
the code easier to implement and debug.

Without the advantages of having SQLite built in, the design might well
have followed a different path.  Most reports generated by Fossil involve
a complex set of queries against the relational tables of the repository
database.  These queries are normally implemented in only a few dozen
lines of SQL code.  But if those queries had been implemented procedurally
using a key/value or pile-of-files database, it
may have well been the case that a high-level scripting language such as
Tcl, Python, or Ruby may have worked out better than C.
Added www/tickets.wiki.







































































































































































































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<title>The Fossil Ticket System</title>

<h2>1.0 File Format</h2>

At its lowest level, the tickets of Fossil consist solely of
[./fileformat.wiki#tktchng | ticket change artifacts].
Each ticket change artifact corresponds to a single change
to a ticket.  The act of creating a ticket is considered a
change.

Each ticket change artifact contains the following information:

<ul>
<li>The ID of the ticket that was changed
<li>The time stamp for when the change occurred
<li>The user who made the change
<li>A list of key/value pairs that show what changed in the ticket
</ul>

To determine the current state of a particular ticket, Fossil orders
the change artifacts for that ticket from oldest to most recent,
then applies each change in time stamp order.

On each change artifact, there are one or more key/value pairs that
implement the change.  The key corresponds to a field of the ticket
that is modified.  The value may either replace the earlier value for
that key, or the value may be appended to the prior value.

<h2>2.0 Ticket Tables</h2>

The low-level artifact format for ticket content is tedious and
cumbersome to access in real time.  To facilitate reporting and display
of tickets, the low-level artifact information is collected and
summarized in a pair of SQL tables in each local repository.  Display
and reporting of tickets is accomplished by querying these two tables.

Note that only the low-level ticket change artifacts are synced.  The
content of the two ticket tables can always be reconstructed from the
ticket change artifacts.  And, indeed, the reconstruction of the ticket
tables from low-level artifacts happens automatically whenever new
ticket change artifacts are received by the system.  The important point
to remember is that display of tickets is accomplished using SQL tables
but that recording and syncing of ticket information is accomplished using
ticket change artifacts.

<h3>2.1 Ticket Table Schema</h3>

The two ticket tables are called TICKET and TICKETCHNG.
The default schema (as of this writing) for these two tables is shown
below:

<verbatim>
CREATE TABLE ticket(
  -- Do not change any column that begins with tkt_
  tkt_id INTEGER PRIMARY KEY,
  tkt_uuid TEXT UNIQUE,
  tkt_mtime DATE,
  tkt_ctime DATE,
  -- Add as many fields as required below this line
  type TEXT,
  status TEXT,
  subsystem TEXT,
  priority TEXT,
  severity TEXT,
  foundin TEXT,
  private_contact TEXT,
  resolution TEXT,
  title TEXT,
  comment TEXT
);
CREATE TABLE ticketchng(
  -- Do not change any column that begins with tkt_
  tkt_id INTEGER REFERENCES ticket,
  tkt_rid INTEGER REFERENCES blob,
  tkt_mtime DATE,
  -- Add as many fields as required below this line
  login TEXT,
  username TEXT,
  mimetype TEXT,
  icomment TEXT
);
CREATE INDEX ticketchng_idx1 ON ticketchng(tkt_id, tkt_mtime);
</verbatim>

Generally speaking, there is one row in the TICKETCHNG table for each
change to each ticket.  In other words, there is one row in the
TICKETCHNG table for each low-level ticket change artifact.  The
TICKET table, on the other hand, contains a summary of the current
status of each ticket.

Fields of the TICKET and TICKETCHNG tables that begin with "tkt_" are
used internally by Fossil.  The logic inside of Fossil that converts
ticket change artifacts into row data for the two ticket tables expects
the "tkt_" fields to always be present.  All of the other fields of the
TICKET and TICKETCHNG tables are "user defined" in the sense that they
can be anything the administrator of the system wants them to be.  The
user-defined fields should correspond to keys in the key/value pairs of
the ticket change artifacts.

The <b>tkt_id</b> fields of TICKET and TICKETCHNG are an integer key
used to uniquely identify the ticket to which the row belongs.  These
keys are for internal use only and may change when doing a "fossil rebuild".

The <b>tkt_uuid</b> field is the unique hexadecimal identifier for the ticket.
Ticket identifiers appear to be SHA1 hash strings, but they
are not really the hash of any identifiable artifact.  They are
just random hexadecimal numbers.  When creating a new ticket, Fossil uses
a (high-quality) pseudo-random number generator to create the ticket
number.  The ticket numbers are large so that the chance of collision
between any two tickets is vanishingly small.

The <b>tkt_mtime</b> field of TICKET shows the time (as a Julian day number)
of the most recent ticket change artifact for that ticket.  The
<b>tkt_mtime</b> field of TICKETCHNG shows the timestamp on the ticket
change artifact that the TICKETCHNG row refers to.  The
<b>tkt_ctime</b> field of TICKET is the time of the oldest ticket change
artifact for that ticket, thus holding the time that the ticket was
created.

The <b>tkt_rid</b> field of TICKETCHNG is the integer primary key in the
BLOB table of the ticket change artifact that gave rise to the row in the
TICKETCHNG table.

All the other fields of the TICKET and TICKETCHNG tables are available
for customization for individual projects.  None of the remaining fields
are required, but all of them are needed in order to use the default
ticket creating, viewing, and editing scripts.  It is recommended that
the other fields be retained and that customizations be restricted to
adding new fields above and beyond the default.

<h3>2.2 Translating Artifacts To Tables</h3>

Each row in the TICKETCHNG table corresponds to a single ticket change
artifact.  The tkt_id field is the integer primary key of the TICKET
table entry for the corresponding ticket.  The tkt_rid field is the
integer primary key for the BLOB table entry that contains the low-level
artifact text.  The tkt_mtime field is the time stamp on the ticket
change artifact, expressed as a Julian day number.  If the ticket
change artifact contains a key/value pair where the key is "login",
then the corresponding value is stored in the login field of the
TICKETCHNG table.  The same it true for "username", "mimetype", and
"icomment" fields.  Any time there is a key/value pair in the ticket
change artifact and the key corresponds to the name of a field in the
TICKETCHNG table, then the value of that key/value pair is stored in
the TICKETCHNG table.  If the TICKETCHNG table has a field for which there
is no corresponding key/value pair in the artifact, then that field of
the TICKETCHNG table is NULL.  If there are key/value pairs in the
artifact that have no corresponding field in the TICKETCHNG table, those
key/value pairs are silently ignored.

Each row in the TICKET table records the overall status of a ticket.
The tkt_id field is a unique integer primary key for the ticket.
the tkt_uuid field is the global ticket identifier - a larger random
hexadecimal constant.  The tkt_mtime and tkt_ctime fields hold the
times of the most recent and the oldest ticket change artifacts for
this ticket, respectively.

To reconstruct the TICKET table, the ticket change
artifacts are visited in time stamp order.  As each ticket change artifact is
visited, its key/value pairs are examined.  For any key/value pair in
which the key is the same as a field in the TICKET table, the value
of that pair either replaces or is appended to the previous value
of the corresponding field in the TICKET table.  Whether a value is
replaced or appended is determined by markings in the ticket change
artifact itself.  Most fields are usually replaced. (For example, to change
the status from "Open" to "Fixed" would involve a key value pair
"status/Fixed" with the replace attribute set).  The main exception
is the "comment" field, which is usually appended with new comment
text.

Note that the replace-or-append mark on ticket change artifacts is
only used by the TICKET table.  Since the initial value of all fields
in the TICKETCHNG table is NULL, the replace-or-append mark makes no
difference there.

<h3>2.3 Old-Style versus New-Style Tickets</h3>

Older versions of Fossil
(before [/timeline?c=2012-11-27T16:26:29 | 2012-11-27])
only supported the TICKET table.
In this older style, new comments were added to tickets by using
the append-value feature on the comment field.  Thus the TICKET.COMMENT
field contains the complete text of all user comments already appended
together and ready for display.

A problem with the old approach is that all comment text had to
be in the same format.  In other words, the all comment text had to be
either plaintext or wiki or HTML.  It was not possible for some comments
to be in HTML and others to be plaintext.  Some site administrators wanted the
ability to mix plaintext, wiki, and HTML comments and display each
comment according to its chosen format.  Hence, Fossil was enhanced to
support the "new-style" tickets.

The TICKETCHNG table was added to support new-style tickets.  In the new
style, comment text is stored with the "icomment" (for "Incremental Comment")
key and appears separately, and with its own mimetype, in multiple rows
of the TICKETCHNG table.  It then falls to the TH1 script code on the
View Ticket Page to query the TICKETCHNG table and extract and format
the various comments in time stamp order.
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# Proxying Fossil via HTTPS with nginx

This document has [moved](./server/debian/nginx.md#tls).
Added www/uitest.html.

































































































































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<html>
<head>
<title>Fossil UI Test</title>
</head>
<body>
<script>
  var aTest = [
///////////////////////////////////////////////////////////////////////////
///  Add pages to be tested below:
//////////////////////////////////////////////////////////////////////////
{
 url: "timeline",
 desc:
   "Simple timeline of most recent check-ins. Verify that all submenus work."
},
{
 url: "timeline?n1=125",
 desc:
   "Timeline with 125 entries.  Verify that submenus preserve the entry count."
},
{
 url: "wiki",
 desc:
   "The wiki homepage"
}
//////////////////////////////////////////////////////////////////////////////
///  End of testing data
/////////////////////////////////////////////////////////////////////////////
  ];
  var iTest = 0;
  var nTest = aTest.length;
  var totalTest = nTest;
  var firstTest = aTest[0];
  function gebi(x){ return document.getElementById(x); }
</script>
<style type="text/css">
  a {
    padding-top:5px;
    padding-bottom:5px;
    padding-left:10px;
    padding-right:10px;
    text-align: right;
    color: #000;
    background-color: #eef;
    vertical-align:middle;
    box-shadow: 0px 3px 4px #999;
    border-radius: 10px;
  }
</style>
<p>Test frame for the Fossil server at <span id="x1">???</span>.</p>
<ul>
<li> <span id="x2">0</span> of <span id="x3">0</span> pages checked so far.
<li> Current page: <b><span id="x5"></span></b>
<li> <span id="x6">Press "Begin" to begin testing</span>
</ul>
<a id="x-start" target="fossiltest" onclick="startTest()">Begin</a>
<a id="x-prev" target="fossiltest" onclick="prevTest()">Previous</a>
<a id="x-next" target="fossiltest" onclick="nextTest()">Next</a>
<a id="x-pass" target="fossiltest" onclick="passTest()">Test Passes</a>
<p id="x-done" style="color:green;">Testing Complete!</p>
<script>
  var re = new RegExp("/doc/[^/]+/www/.*$");
  var baseURI = document.location.href.replace(re,"/");
  gebi("x1").innerHTML = '"' + baseURI + '"';
  gebi("x3").innerHTML = nTest;
  var xprev = gebi("x-prev");
  var xnext = gebi("x-next");
  var xpass = gebi("x-pass");
  var xstart = gebi("x-start");
  gebi("x-done").hidden = 1;
  function loadPage(){
    var x = aTest[iTest];
    gebi("x5").innerHTML = x.url;
    gebi("x6").innerHTML = x.desc;
    gebi("x2").innerHTML = totalTest-nTest;
    xstart.hidden = 1;
    xpass.hidden = 0;
    if( iTest>0 ){
      var y = aTest[iTest-1];
      xprev.href = baseURI + y.url;
      xprev.hidden = 0;
    }else{
      xprev.hidden = 1;
    }
    if( iTest+1<nTest ){
      var z = aTest[iTest+1];
      xnext.href = baseURI + z.url;
      xpass.href = baseURI + z.url;
      xnext.hidden = 0;
    }else{
      xnext.hidden = 1;
      if( nTest>1 ) xpass.href = xprev.href;
    }
  }
  gebi("x3").innerHTML = nTest;
  xprev.hidden = 1;
  xnext.hidden = 1;
  xpass.hidden = 1;
  xstart.hidden = 0;
  xstart.href = baseURI + aTest[0].url;
  function startTest(){
    setTimeout(loadPage,1);
  }
  function prevTest(){
    if( iTest<=0 ) return false;
    iTest--;
    setTimeout(loadPage,1);
  }
  function nextTest(){
    if( iTest+1>=nTest ) return false;
    iTest++;
    setTimeout(loadPage,1);
  }
  function passTest(){
    if( nTest==1 ){
      xpass.hidden = 1;
      xnext.hidden = 1;
      xprev.hidden = 1;
      gebi("x2").innerHTML = totalTest;
      gebi("x-done").hidden = 0;
      return false;
    }else{
      aTest.splice(iTest, 1);
      nTest--;
      if( iTest>=nTest ) iTest = nTest-1;
      setTimeout(loadPage,1);
    }
  }
</script>
Added www/unvers.wiki.



















































































































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<title>Unversioned Content</title>

"Unversioned content" or "unversioned files" are
files stored in a Fossil repository without history, meaning
it retains the newest version of each such file, and that alone.
Unversioned files may have an optional directory name prefix.

Though it omits history, Fossil does sync unversioned content between
repositories.  In the event of a conflict during a sync, it retains
the most recent version of each unversioned file, discarding
older versions.

Unversioned files are useful for storing ephemeral content such as
builds or frequently changing web pages. We store the
[https://fossil-scm.org/home/uv/download.html|download] page of the
self-hosting Fossil repository as unversioned content, for
example.

<h2>Accessing Unversioned Files</h2>

Unversioned files are <u>not</u> a part of a check-out.
Unversioned files are intended to be accessible as web pages using
URLs of the form: "<tt>https://example.com/cgi-script/<b>uv</b>/<i>FILENAME</i></tt>".
In other words, the URI method "<b>uv</b>" (short for "unversioned")
followed by the name of the unversioned file will retrieve the content
of the file.  The MIME type is inferred from the filename suffix.

The content of unversioned files can also be retrieved using the
[/help?cmd=unversioned|fossil unvers cat <i>FILENAME...</i>]
or [/help?cmd=unversioned|fossil unvers export <i>FILENAME</i>] commands.

A list of all unversioned files on a server can be seen using
the [/help?cmd=/uvlist|/uvlist] URL.  ([/uvlist|example].)

<h2>Syncing Unversioned Files</h2>

Unversioned content does not sync between repositories by default.
One must request it via commands such as:

<pre>
fossil sync <b>-u</b>
fossil clone <b>-u</b> <i>URL local-repo-name</i>
fossil unversioned sync
</pre>

The [/help?cmd=sync|fossil sync] and [/help?cmd=clone|fossil clone]
commands will synchronize unversioned content if and only if they're
given the "-u" (or "--unversioned") command-line option.  The
[/help?cmd=unversioned|fossil unversioned sync] command synchronizes the
unversioned content without synchronizing anything else.

Notice that the "-u" option does not work on
[/help?cmd=push|fossil push] or [/help?cmd=pull|fossil pull].
The "-u" option is only available on "sync" and "clone".
A rough equivalent of an unversioned pull would be the
[/help?cmd=unversioned|fossil unversioned revert] command.  The
"unversioned revert"
command causes the unversioned content on the local repository to be
overwritten by the unversioned content found on the remote repository.

Beware that because unversioned file sync is an uncommonly dangerous
capability — there being no history to revert to in the case of human
error — even the all-powerful Fossil "setup" user does not get
unversioned file sync capability by default.  See
[./caps/admin-v-setup.md#dcap | this] for the full details, but the
short-and-sweet takeaway is that a user needs the "y" capability on the
remote before they can sync unversioned content. Until then, you're
allowed to add such files to your local repo, but they will not sync.

<h2>Implementation Details</h2>

<i>(This section outlines the current implementation of unversioned
files.  This is not an interface spec and hence subject to change.)</i>

Unversioned content is stored in the repository in the
"unversioned" table:

<pre>
CREATE TABLE unversioned(
  uvid INTEGER PRIMARY KEY AUTOINCREMENT,  -- unique ID for this file
  name TEXT UNIQUE,       -- Name of the file
  rcvid INTEGER,          -- From whence this file was received
  mtime DATETIME,         -- Last change (seconds since 1970)
  hash TEXT,              -- SHA1 or SHA3-256 hash of uncompressed content
  sz INTEGER,             -- Size of uncompressed content
  encoding INT,           -- 0: plaintext  1: zlib compressed
  content BLOB            -- File content
);
</pre>

Fossil does not create the table ahead of need.
If there are no unversioned files in the repository, the
"unversioned" table will not exist. Consequently,
one simple way to purge all unversioned content from a repository
is to run:

<pre>
fossil sql "DROP TABLE unversioned; VACUUM;"
</pre>

Lacking history for unversioned files, Fossil does not attempt delta
compression on them.

Fossil servers exchange unversioned content whole; it does not attempt
to "diff" your local version against the remote and send only the
changes. We point this out because one use-case for unversioned content
is to send large, frequently-changing files. Appreciate the consequences
before making each change.

There are two bandwidth-saving measures in "<tt>fossil uv sync</tt>".
The first is the regular HTTP payload compression step, done on all
syncs. The second is that Fossil sends hash exchanges to determine
when it can avoid sending duplicate content over the wire unnecessarily.
See the [./sync.wiki|synchronization protocol documentation] for further
information.
Added www/userlinks.wiki.




















































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<title>Links For Fossil Users:</title>

  *  [./relatedwork.md | Related Work]: projects and links related to
     Fossil and version control.
  *  [./permutedindex.html | Documentation index] with [/search?c=d | full text search].
  *  [./reviews.wiki | Testimonials] from satisfied Fossil users and
     [./quotes.wiki | Quotes] about Fossil and other DVCSes.
  *  [./faq.wiki | Frequently Asked Questions]
  *  The [./concepts.wiki | concepts] behind Fossil.
     [./glossary.md | Another viewpoint].
  *  [./quickstart.wiki | Quick Start] guide to using Fossil.
  *  [./qandc.wiki | Questions &amp; Criticisms] directed at Fossil.
  *  [./build.wiki | Compiling and Installing]
  *  Fossil supports [./embeddeddoc.wiki | embedded documentation]
     that is versioned along with project source code.
  *  Fossil uses an [./fileformat.wiki | enduring file format] that is
     designed to be readable, searchable, and extensible by people
     not yet born.
  *  A tutorial on [./branching.wiki | branching], what it means and how
     to do it using Fossil.
  *  The [./selfcheck.wiki | automatic self-check] mechanism
     helps insure project integrity.
  *  Fossil contains a [./wikitheory.wiki | built-in wiki].
  *  An [./event.wiki | Event] is a special kind of wiki page associated
     with a point in time rather than a name.
  *  [./settings.wiki | Settings] control the behaviour of Fossil.
  *  [./ssl.wiki | Use SSL] to encrypt communication with the server.
  *  The [https://fossil-scm.org/forum|Fossil forum] is, as of late-2024,
     the project's central communication channel. The
     [https://www.mail-archive.com/fossil-users@lists.fossil-scm.org
     | read-only mailing list archives] house discussions spanning Fossil's
     first decade.
  *  [./stats.wiki | Performance statistics] taken from real-world projects
     hosted on Fossil.
  *  How to [./shunning.wiki | delete content] from a Fossil repository.
  *  How Fossil does [./password.wiki | password management].
  *  On-line [/help | help].
  *  List of [./th1.md | TH1 commands provided by Fossil itself] that expose
     its key functionality to TH1 scripts.
  *  List of [./th1-hooks.md | TH1 hooks exposed by Fossil] that enable
     customization of commands and web pages.
  *  A free hosting server for Fossil repositories is available at
     [http://chiselapp.com/].
  *  How to [./server/ | set up a server] for your repository.
  *  Customizing the [./custom_ticket.wiki | ticket system].
  *  Methods to [./checkin_names.wiki | identify a specific check-in].
  *  [./inout.wiki | Import and export] from and to Git.
  *  [./fossil-v-git.wiki | Fossil versus Git].
  *  [./fiveminutes.wiki | Up and running in 5 minutes as a single user]
     (contributed by Gilles Ganault on 2013-01-08).
  *  [./antibot.wiki | How Fossil defends against abuse by spiders and bots].
  *  [./wsl_caveats.wiki | Using Fossil on WSL], caveats and guidance.
Added www/webpage-ex.md.































































































































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Web-Page Examples
=================

Here are just a few examples of the many web pages supported
by Fossil.  Follow hyperlinks on the examples below to see many
other examples.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?y=ci&n1=100'>(Example)</a> &rarr;
     100 most recent check-ins.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/finfo?name=src/file.c'>(Example)</a> &rarr;
     All changes to the <b>src/file.c</b> source file.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=200&uf=0c3c2d086a'>(Example)</a> &rarr;
     All check-ins using a particular version of the <b>src/file.c</b>
     source file.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=11&y=ci&c=2014-01-01'>(Example)</a> &rarr;
     Check-ins proximate to an historical point in time (2014-01-01).

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?df=release&y=ci'>(Example)</a> &rarr;
     All check-ins derived from the most recent release.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=11&y=ci&c=2014-01-01&v=1'>(Example)</a> &rarr;
     The previous example augmented with file changes.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=25&y=ci&a=1970-01-01'>(Example)</a> &rarr;
     First 25 check-ins after 1970-01-01.  (The first 25 check-ins of
     the project.)

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=200&r=svn-import'>(Example)</a> &rarr;
     All check-ins of the "svn-import" branch together with check-ins
     that merge with that branch.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=200&t=svn-import'>(Example)</a> &rarr;
     All check-ins of the "svn-import" branch only.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?n1=100&y=ci&ubg'>(Example)</a> &rarr;
     100 most recent check-ins color coded by committer rather than by branch.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?from=version-1.27&to=version-1.28'>(Example)</a> &rarr;
     All check-ins on the most direct path from
     version-1.27 to version-1.28

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?namechng'>(Example)</a> &rarr;
     Show check-ins that contain file name changes

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?u=drh&c=2014-01-08&y=ci'>(Example)</a> &rarr;
     Show check-ins circa 2014-01-08 by user "drh".

  *  <a target='_blank' class='exbtn'
     href='$ROOT/timeline?from=version-1.34&to=version-1.35&chng=src/timeline.c,src/doc.c'>(Example)</a> &rarr;
     Show all check-ins between version-1.34 and version-1.35 that make
     changes to either of the files src/timeline.c or src/doc.c.

     <big><b>&rarr;</b></big> (Hint:  In the pages above, click the graph nodes
     for any two check-ins or files to see a diff.)
     <big><b>&larr;</b></big>

  *  <a target='_blank' class='exbtn'
     href='$ROOT/search?s=interesting+pages'>(Example)</a> &rarr;
     Full-text search for "interesting pages".

  *  <a target='_blank' class='exbtn'
     href='$ROOT/tree?ci=daff9d20621&type=tree'>(Example)</a> &rarr;
     All files for a particular check-in (daff9d20621480)

  *  <a target='_blank' class='exbtn'
     href='$ROOT/tree?ci=trunk&type=tree&mtime=1'>(Example)</a> &rarr;
     All files for the latest check-in on a branch (trunk) sorted by
     last modification time.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/fileage?name=svn-import'>(Example)</a> &rarr;
     Age of all files in the latest checking for branch "svn-import".

  *  <a target='_blank' class='exbtn'
     href='$ROOT/brlist'>(Example)</a> &rarr;
     Table of branches.  (Click on column headers to sort.)

  *  <a target='_blank' class='exbtn'
     href='$ROOT/stat'>(Example)</a> &rarr;
     Overall repository status.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/reports?type=ci&view=byuser'>(Example)</a> &rarr;
     Number of check-ins per committer.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/reports?view=byfile'>(Example)</a> &rarr;
     Number of check-ins for each source file.
     (Click on column headers to sort.)

  *  <a target='_blank' class='exbtn'
     href='$ROOT/blame?checkin=5260fbf63287&filename=src/rss.c&limit=-1'>
       (Example)</a> &rarr;
     Most recent change to each line of a particular source file in a
     particular check-in.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/taglist'>(Example)</a> &rarr;
     List of tags on check-ins.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/bigbloblist'>(Example)</a> &rarr;
     The largest objects in the repository.

  *  <a target='_blank' class='exbtn'
     href='$ROOT/hash-collisions'>(Example)</a> &rarr;
     Hash prefix collisions

  *  <a target='_blank' class='exbtn'
     href='$ROOT/sitemap'>(Example)</a> &rarr;
     The "sitemap" containing links to many other pages
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<h1 align="center">The Fossil Web Interface</h1>
<title>The Fossil Web Interface</title>

One of the innovative features of fossil is its built-in web interface.
One of the innovative features of Fossil is its built-in web interface.
This web interface provides everything you need to run a software
development project:

  *  [./bugtheory.wiki | Ticketing and bug tracking]
  *  [./wikitheory.wiki | Wiki]
  *  [./embeddeddoc.wiki | On-line documentation]
  *  [./event.wiki | Technical notes]
  *  Status information
  *  [./forum.wiki | Forum]
  *  [./chat.md | Chatroom]
  *  Timelines
  *  Full text search over all of the above
  *  Status information
  *  Graphs of revision and branching history
  *  File and version lists and differences
  *  Download historical versions as ZIP archives
  *  Historical change data
  *  Links to download historical versions as ZIP archives
  *  Add and remove tags on check-ins
  *  Move check-ins between branches
  *  Revise check-in comments
  *  Manage user credentials and access permissions
  *  And so forth... (some [./webpage-ex.md|examples])

You get all of this, and more, for free when you use fossil. 
You get all of this, and more, for free when you use Fossil.
There are no extra programs to install or setup.
Everything you need is already pre-configured and built into the
self-contained, stand-alone fossil executable.
self-contained, stand-alone Fossil executable.

As an example of how useful this web interface can be,
the entire [./index.wiki | fossil website] (except for the
the entire [./index.wiki | Fossil website],
[http://www.fossil-scm.org/download.html | precompiled binary download page]),
including the document you are now reading,
is rendered using the stock fossil web interface, with no enhancements,
is rendered using the Fossil web interface, with no enhancements,
and little customization.

<div class="indent">
<b>Key point:</b> <i>The Fossil website is just a running instance
of Fossil!
</div>

Note also that because fossil is a distribute system, you can run
Note also that because Fossil is a distributed system, you can run
the web interface on your local machine while off network (for example,
while on an airplane) including
making changes to wiki pages and/or trouble ticket, then synchronize with your
co-workers after you reconnect.
co-workers after you reconnect.  When you clone a Fossil repository, you
don't just get the project source code, you get the entire project
management website.

<h2>Drop-Dead Simple Startup</h2>
<h2>Very Simple Startup</h2>

To start using the built-in fossil web interface on an existing fossil
To start using the built-in Fossil web interface on an existing Fossil
repository, simply type this:

   <b>fossil ui existing-repository.fossil</b>
<pre>fossil ui existing-repository.fossil</pre>

Substitute the name of your repository, of course.
The "ui" command will start a webserver running (it figures out an
available TCP port to use on its own) and then automatically launches 
The "ui" command will start a web server running (it figures out an
available TCP port to use on its own) and then automatically launches
your web browser to point at that server.  If you run the "ui" command
from within an open check-out, you can omit the repository name:

  <b>fossil ui</b>
<pre>fossil ui</pre>

The latter case is a very useful short-cut when you are working on a
fossil project and you want to quickly do some work with the web interface.
Notice that fossil automatically finds an unused TCP port to run the
server own and automatically points your web browser to the correct
Fossil project and you want to quickly do some work with the web interface.
Notice that Fossil automatically finds an unused TCP port to run the
server on and automatically points your web browser to the correct
URL.  So there is never any fumbling around trying to find an open
port or to type arcane strings into your browser URL entry box.
The interface just pops right up, ready to run.

The fossil web interface is also very easy to setup and run on a
network server, as either a CGI program or from inetd.  Details on how
The Fossil web interface is also very easy to setup and run on a
network server, as either a CGI program or from inetd, or as an
SCGI server.  Details on how
to do that are described further below.

<h2>Things To Do Using The Web Interface</h2>

You can view <b>timelines</b> of changes to the project.  The default
"Timeline" link on the menu bar takes you to a page that shows the 20
most recent check-ins, wiki page edits, and ticket/bug-report changes.
most recent check-ins, wiki page edits, ticket/bug-report changes,
and/or blog entries.
This gives a very useful snapshot of what has been happening lately on the
project.  You can click to go further back in time, if needed.  Or
follow hyperlinks to see details, including diffs and annotated diffs,
of individual check-ins, wiki page edits, or ticket changes.
of individual check-ins, wiki page edits, ticket changes, and
blog edits.

You can view and edit <b>tickets and bug reports</b> by following the
"Tickets" link on the menu bar.
Fossil is backed by an SQL database, so users with appropriate permissions
can write new ticket report formats based on SQL query statements.
Fossil is careful to prevent ticket report formats from doing any mischief
on the database (it only allows SELECT statements to run) and it restricts
access to sensitive data such as user passwords.  So it is actually safe
to let anonymous users on the internet write their own ticket formats if
you like.  In addition to viewing and/or creating report formats, you can
also create new tickets or look at summaries or complete histories of
existing tickets.  Any changes you make will automatically merge with
changes from your co-workers the next time your repository is synchronized.

You can view and edit <b>wiki</b> by following the "Wiki" link on the
menu bar.  Fossil uses simple and easy-to-remember
[/wiki_rules | wiki formatting rules] so you won't have to spend a lot
of time learning a new markup language.  And, as with tickets, all of
menu bar.  Fossil has its own easy-to-remember
[/wiki_rules | markup rules], or if you prefer,  it also
supports [/md_rules | Markdown]. And, as with tickets, all of
your edits will automatically merge with those of your co-workers when
your repository synchronizes.

You can view summary reports of <b>leaves and branches</b> in the
check-in graph by visiting the "Leaves" or "Branches" links on the
You can view summary reports of <b>branches</b> in the
check-in graph by visiting the "Branches" link on the
menu bar.  From those pages you can follow hyperlinks to get additional
details.  These screens allow you to easily keep track of what is going
on with separate subteams within your project team.
on with separate sub-teams within your project team.

The "Files" link on the menu allows you to browse though the <b>file
The "Files" link on the menu allows you to browse through the <b>file
hierarchy</b> of the project and to view complete changes histories on
individual files, with hyperlinks to the check-ins that made those
changes, and with diffs and annotated diffs between versions.

The web interface supports [./embeddeddoc.wiki | embedded documentation].
Embedded documentation is documentation files (usually in wiki format)
that are checked into project as part of the source tree.  Such files
can be viewed as if they were ordinary web pages.  This document that
you are now reading is an example of embedded documentation.
The web interface supports [./embeddeddoc.wiki | embedded documentation]
files (usually in wiki format) that are checked into the project as
part of the source tree.  Such files can be viewed as if they were
ordinary web pages.  This document that you are now reading is an
example of embedded documentation.

<h2>Customizing The Web Interface Appearance</h2>

Users with appropriate permissions can customize the look and feel of
the web interface using the "Admin" link on the main menu of the web
interface.  Templates
for the header and footer of each page can be edited, as can the CSS
for the entire page.  You can even change around the main menu.
Timeline display preferences can be edited.  The page that is brought
up as the "Home" page can be changed.  It is often useful to set the
"Home" page to be a wiki page or an embedded document.
"Home" page to be a wiki page or an embedded document. The built-in
pages <b>/home</b> and <b>/index</b> can be used as the "Home" page.
They have identical effect, which is to instruct Fossil to find and
display a wiki page with the same name as the project, or if that
does not exist, <b>/README.md</b> or <b>/index.wiki</b>.

An embedded document link such as <b>doc/trunk/README.md</b> can be
used for the "Home" page. If you specify one of the built-in keywords
<b>/home</b> or <b>/index</b>, the page will not be treated as an 
embedded document.

<h2>Installing On A Network Server</h2>

When you create a new fossil project and after you have configured it
When you create a new Fossil project and after you have configured it
like you want it using the web interface, you can make the project
available to a distributed team by simply copying the single
repository file up to a web server that supports CGI.  Just put the
repository file up to a web server that supports CGI or SCGI.  To
run Fossil as CGI, just put the
<b>sample-project.fossil</b> file in a directory where CGI scripts
have both read and write permission on the file and the directory that
contains the file, then add a CGI script that looks something like this:

  <verbatim>
  #!/usr/local/bin/fossil
  repository: /home/www/sample-project.fossil
<verbatim>#!/usr/local/bin/fossil
repository: /home/www/sample-project.fossil</verbatim>
  </verbatim>

Adjust the script above so that the paths are correct for your system,
of course, and also make sure the fossil binary is installed on the server.
of course, and also make sure the Fossil binary is installed on the server.
But that is <u>all</u> you have to do.  You now have everything you need to host
a distributed software development project in less than five minutes using a 
a distributed software development project in less than five minutes using a
two-line CGI script.

Instructions for setting up an SCGI server are
[./scgi.wiki | available separately].

You don't have a CGI-capable web server running on your server machine?
Not a problem.  The fossil interface can also be launched via inetd or
xinetd.  An inetd configuration line sufficient to launch the fossil
You don't have a CGI- or SCGI-capable web server running on your
server machine?
Not a problem.  The Fossil interface can also be launched via inetd or
xinetd.  An inetd configuration line sufficient to launch the Fossil
web interface looks like this:

  <verbatim>
  80 stream tcp nowait.1000 root /usr/local/bin/fossil \
  /usr/local/bin/fossil http /home/www/sample-project.fossil 
<verbatim>80 stream tcp nowait.1000 root /usr/local/bin/fossil \
/usr/local/bin/fossil http /home/www/sample-project.fossil</verbatim>
  </verbatim>

As always, you'll want to adjust the pathnames to whatever is appropriate
for your system.  The xinetd setup uses a different syntax but follows
the same idea.
Added www/whyallinone.md.











































































































































































































































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# Why Add Forum, Wiki, and Web Software To Your DVCS?

One notable feature of Fossil is that it bundles
[bug tracking](./bugtheory.wiki),
[wiki](./wikitheory.wiki),
[forum](./forum.wiki),
[chat](./chat.md), and
[technotes](./event.wiki)
with distributed version control to give you an
all-in-one software project management system.

A commenter on [Hacker News](https://news.ycombinator.com/item?id=27437895)
takes exception to this idea, writing:

>  *I don't want forum/web software built into my dvcs.*
>  *I don't see how this improves over git.*

This commenter may hold whatever opinions he wishes, of course.
However, there are many good reasons why bundling other project management
features with the DVCS might be useful for a given project:

  1.  There is a single software package to install and manage for the
      project website.
      The alternative is to select, install, configure, learn about,
      manage, and maintain separate DVCS, wiki,
      ticketing, forum,
      chat, documentation, and whatever other software packages your project needs.
      Less time spent on project administration details means more
      time available to spend on the project itself.

  2.  Fossil’s autosync feature gives you an implicit backup of the
      wiki, tickets, forum, and so forth simply by cloning the
      repository to another machine and using that clone regularly.
      Since the typical Fossil usage pattern is to stand the repo up on a
      central server and have the developers clone that repository down
      to their personal machines, if the server falls over, the last
      developer to do anything that resulted in an autosync has a
      functional and up-to-date backup.

      There are [limitations to relying on Fossil’s autosync feature for
      backup purposes](./backup.md), but that document gives two methods
      for more complete backups, both of which are easily automated. The
      Fossil project itself is distributed across three data centers in
      this manner via cron.

  3.  Remote workers get more than just the source code:
      they get the entire website including versioned documentation,
      wiki articles, tickets, forum posts, and so forth. This supports
      off-network development when traveling, when riding out Internet
      service failures, and when workers must sync with multiple remote
      servers, as when working alternately from home and in some central
      office.

      Feature-competitive Fossil alternatives typically solve this same
      problem with centralization, which generally means that only the
      DVCS piece still works in these situations where the developer is
      unable to contact the central server. Why accept the limitation of
      having a distributed clone of the code repo alone?

      Centralization doesn’t work for every project. If you enjoy the
      benefits of truly distributed (read: non-centralized) version
      control, you may also benefit from distributed forums, distributed
      ticket tracking, distributed wiki article publishing, and so
      forth.

  4.  Integration of all of these features allows easy hyperlinks between 
      check-in comments, wiki pages, forum posts, and tickets. More,
      because the software sees both sides of the link, referrer and
      referent, it can provide automatic back-references.

      A common situation in a Fossil project is that:

      * a forum post refers to a versioned project document that shows
        that the software isn’t behaving as documented;
      * a developer triages that forum report as a verified bug, filing
        a ticket to prioritize and track the resolution;
      * developers chat about the problem, referring to the ticket and
        thereby indirectly referring to the forum post, plus perhaps to
        other Fossil-managed resources such as a wiki document giving
        design principles that guide the proper fix; and finally
      * the commit message resolving the ticket includes a reference to
        the ticket it resolves.

      Since Fossil sees that the commit refers to a ticket, the ticket
      page automatically also refers back to the commit, closing the
      loop. A latecomer may arrive at the ticket via a web search, and
      from that see that it was closed following a commit. They can
      follow the link from the initial ticket message to the forum
      thread to catch up on the discussion leading to the fix and likely
      find a follow-up post from the initial reporting user saying
      whether the fix worked for them. If further work was needed, the
      latecomer can likely find it from that forum thread.

      This works even in a remote off-network clone: the developer can
      pull up the project web site via an `http://localhost` link and
      follow these links around the loop.

      Fossil allows breaking some of these project facilities out into
      separate repositories, as when the public forum is kept separate
      from the actual software development repository for administration
      reasons. By using Fossil’s [interwiki link
      feature](./interwiki.md), you can get this same internal linking
      from ticket to commit to forum to wiki even across these
      administrative  boundaries, even with remote off-network clones,
      simply by adjusting the interwiki map to match the remote clone’s
      network configuration.

  5.  Bundling all of these services gives [single sign-on][SSO] (SSO) for all
      aspects of the project.  The same username/password works for code,
      wiki, forum, tickets, and chat.

      If you choose to administratively separate some of these features
      by setting up multiple cooperating Fossil repositories, its [login
      groups feature](./caps/login-groups.md) allows asymmetric SSO
      across these administrative boundaries so that, for example, users
      allowed to commit to the code repository also get a forum
      repository login, but self-registered forum users don’t
      automatically get the ability to commit to the code repo.

  6.  Bundling all of these features reduces the number of external
      dependencies for the project.

      Take the first two points above: standing up a Fossil repo backup
      on a new server may be as simple as copying the backup to the new
      server and [configuring its stock HTTP server to point at the
      backup repository via CGI](./server/any/cgi.md).

      Consider: If you had good backups for all of the elements in a
      Git + [Jira] + [Discord] + [MediaWiki] + [Sphinx] lash-up, how long
      would it take you to stand up a replacement? That lash-up
      certainly has more features combined than Fossil alone, but are
      they worth the administration and hosting costs they impose?
      Fossil’s feature set suffices for the SQLite project it was
      created to serve, as well as for many others; is your project
      sufficiently more complex, such that it *needs* all of those extra
      features and their concomitant complexity?

      Considerations such as these push many into centralized hosting
      services such as GitHub, GitLab, Bitbucket, and so forth, but that
      just takes you back to point 3 above.

  7.  Hosting all of these elements within a single service gives a
      consistent look-and-feel across all aspects of the project.

      Skinning independent software packages’ web interfaces to make
      them appear unified is more work than [skinning] everything once, as
      in Fossil, and even then, you can’t make independently-developed
      software look like it was produced by a single entity without
      resorting to heroic levels of customization. If you use a separate
      DVCS web front end, chat system, forum manager, documentation
      system, ticket tracker, and so on, you are likely to be relegated
      to simply matching colors and fonts; you *might* also get the
      ability to add a common logo to the header of all of these
      independent pieces. The pieces won’t look unified, because they
      weren’t developed that way.

      The Fossil project’s
      skinning system lets you affect all of its elements globally from the
      single skin editor.

      Or not: there’s a feature in Fossil that lets skin customizations
      apply to only *some* Fossil features. The initial impetus behind
      this feature was that one of our users wanted Markdown to be
      rendered with different indentation in forum posts than in
      [embedded documentation][edoc] owing to the inherent differences between
      the two presentation modalities.

      A user taking advantage of this per-feature CSS capability who
      wishes to change a UI element common to all Fossil features — say,
      to change the font for literal code blocks — may still make such a
      change globally. Opting into this per-feature CSS doesn’t fork all
      skinning efforts: UI elements not explicitly reskinned on a
      per-feature basis inherit the global skinning.

      But it goes futher. Fossil has a feature for [project-specific
      extensions](./serverext.wiki), which backs the [SQLite Release
      Checklist][srckl], for instance. You wouldn’t know by looking at
      that page that it’s produced by software that isn’t actually part
      of Fossil: the extension only delivers the core of the page,
      and Fossil’s skining wraps it in a way that lets it inherit all of
      the project-level skinning customizations.

  8.  Unifying all of these features within Fossil
      means we have a single Markdown interpreter common to all
      elements. If you lash multiple software systems together, even if
      they can all agree on Markdown as a common document markup
      language — hardly a given, as shown by the MediaWiki and Sphinx
      elements in point 6’s example above — they’re likely to render your text
      using different — possibly even incompatibly-different — Markdown
      dialects.

      This costs you in mental gear-switching when moving from the code
      repository to the documentation system to the forums to the ticket
      tracker.

      More than that, though, a developer might write a forum post that later gets
      promoted to a wiki article or to an embedded version-controlled
      project document. A developer on a Fossil-backed project may simply copy-paste the forum post
      text into the new document and save it, not needing to carefully
      check that it still renders properly under the second Markdown
      rendering engine. Similarly, if a user reports a potential bug via
      the forum, the developer can copy interesting pieces of the
      Markdown from the post into a ticket comment, again without
      needing to fiddle with dialect incompatibilities.

  9.  Fossil is [free, open-source software](../COPYRIGHT-BSD2.txt),
      through and through. Git-backed lash-ups tend to incorporate
      either proprietary add-ons or proprietary hosting systems that
      produce vendor lock-in. Fossil gives you the freedom to take your
      complete backup (point 2) of the project including its
      idiosyncratic customizations and stand it up elsewhere on
      commodity hardware and software stacks.

All of this having been said, the non-DVCS features of Fossil are
optional. Its forum and chat features are disabled by default, and you
can disable the ticket-tracking and wiki features with a quick
configuration change to its [role-based access control system](./caps/).
When you’re ready to turn these additional features on, you can do so
with a few mouse clicks.

Because Fossil is web-native out of the box, if you’ve delegated these
features to outside systems to flesh out Git’s DVCS-only nature, you are
free to do the same with Fossil. One of the many things the [skinning]
facility allows is replacing the built-in links to the wiki, forum,
ticket system, etc. with links to external systems. How easy those
systems make it to link back into Fossil is up to their developers.

[Discord]:   https://discord.com/
[edoc]:      ./embeddeddoc.wiki
[Jira]:      https://www.atlassian.com/software/jira
[MediaWiki]: https://www.mediawiki.org/
[skinning]:  ./customskin.md
[Sphinx]:    https://www.sphinx-doc.org/en/master/
[SSO]:       https://en.wikipedia.org/wiki/Single_sign-on
[srckl]:     https://www.sqlite.org/src/ext/checklist/top/index
Added www/whyusefossil.wiki.




































































































































































































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<title>Why You Should Use Fossil</title>

<h4>(Or if not Fossil, at least some kind of modern
version control such as Git, Mercurial, or Subversion.)</h4>

<h5>I. Benefits of Version Control</h5>

  <ol type='A'>
  <li><p><b>Immutable file and version identification</b>
     <ol type='i'>
     <li>Simplified and unambiguous communication between developers
     <li>Detect accidental or surreptitious changes
     <li>Locate the origin of discovered files
     </ol>
  <li><p><b>Parallel development</b>
     <ol type='i'>
     <li>Multiple developers on the same project
     <li>Single developer with multiple subprojects
     <li>Experimental features do not contaminate the main line
     <li>Development/Testing/Release branches
     <li>Incorporate external changes into the baseline
     </ol>
  <li><p><b>Historical record</b>
     <ol type='i'>
     <li>Exactly reconstruct historical builds
     <li>Locate when and by whom faults were injected
     <li>Find when and why content was added or removed
     <li>Team members see the big picture
     <li>Research the history of project features or subsystems
     <li>Copyright and patent documentation
     <li>Regulatory compliance
     </ol>
   <li><p><b>Automatic replication and backup</b>
     <ol type='i'>
     <li>Everyone always has the latest code
     <li>Failed disk-drives cause no loss of work
     <li>Avoid wasting time doing manual file copying
     <li>Avoid human errors during manual backups
     </ol>
  </ol>

<h5 id="definitions">II. Definitions</h5>

<div class="indent">Moved to [./glossary.md | a separate document].</div>

<h5>III. Basic Fossil commands</h5>

 <ul>
 <li><p><b>clone</b> &rarr;
     Make a copy of a repository.  The original repository
     is usually (but not always) on a remote machine and the copy is on
     the local machine.  The copy remembers the network location from
     which it was copied and (by default) tries to keep itself synchronized
     with the original.
 <li><p><b>open</b> &rarr;
     Create a new check-out from a repository on the local machine.
 <li><p><b>update</b> &rarr;
     Modify an existing check-out so that it is derived from a
     different version of the same project.
 <li><p><b>commit</b> &rarr;
     Create a new version (a new check-in) of the project that
     is a snapshot of the current check-out.
 <li><p><b>revert</b> &rarr;
     Undo all local edits on a check-out.  Make the check-out
     be an exact copy of its associated check-in.
 <li><p><b>push</b> &rarr;
     Copy content found in a local repository over to a remote
     repository.  (Fossil usually does this automatically in response to
     a "commit" and so this command is seldom used, but it is important
     to understand it.)
 <li><p><b>pull</b> &rarr;
     Copy new content found in a remote repository into a local
     repository.  A "pull" by itself does not modify any check-out.  The
     "pull" command only moves content between repositories.  However,
     the "update" command will (often) automatically do a "pull" before
     attempting to update the local check-out.
 <li><p><b>sync</b> &rarr;
     Do both a "push" and a "pull" at the same time.
 <li><p><b>add</b> &rarr;
     Add a new file to the local check-out.  The file must already be
     on disk.  This command tells Fossil to start tracking and managing
     the file.  This command affects only the local check-out and does
     not modify any repository.  The new file is inserted into the
     repository at the next "commit" command.
 <li><p><b>rm/mv</b> &rarr;
     Short for 'remove' and 'move', these commands are like "add"
     in that they specify pending changes to the structure of the check-out.
     As with "add", no changes are made to the repository until the next
     "commit".
 </ul>

<h5>IV. The history of a project is a Directed Acyclic Graph (DAG)</h5>

 <ul>
 <li><p>Fossil (and other distributed VCSes like Git and Mercurial, but
     not Subversion) represent
     the history of a project as a directed acyclic graph (DAG).
     <ul>
     <li><p>Each check-in is a node in the graph
     <li><p>If check-in Y is derived from check-in X then there is
         an arc in the graph from node X to node Y.
     <li><p>The older check-in (X) is call the "parent" and the newer
         check-in (Y) is the "child".  The child is derived from
         the parent.
     </ul>
 <li><p>Two users (or the same user working in different check-outs)
     might commit different changes against the same check-in.  This
     results in one parent node having two or more children.
 <li><p>Command: <b>merge</b> &rarr;
     combines the work of multiple check-ins into
     a single check-out.  That check-out can then be committed to create
     a new check-in that has two (or more) parents.
     <ul>
     <li><p>Most check-ins have just one parent, and either zero or
         one child.
     <li><p>When a check-in has two or more parents, one of those parents
         is the "primary parent". All the other parent nodes are "secondary"
         or "merge" parents.
         Conceptually, the primary parent shows the main line of
         development.  Content from the merge parents is added
         into the main line.
     <li><p>The "direct children" of a check-in X are all children that
         have X as their primary parent.
     <li><p>A check-in node with no direct children is sometimes called
         a "leaf".
     <li><p>The "merge" command changes only the check-out.
         The "commit" command must be run subsequently to make the merge
         a permanent part of project.
     </ul>
 <li><p>Definition: <b>branch</b> &rarr;
     a sequence of check-ins that are all linked
     together in the DAG through the primary parent.
      <ul>
      <li><p>Branches are often given names which propagate to direct children.
          The tradition in Fossil is to call the main branch "trunk".  In
          Git, it's called "master" by default, though some call it
          something else, like "main".
      <li><p>It is possible to have multiple branches with the same name.
         Fossil has no problem with this, but it can be confusing to
         humans, so best practice is to give each branch a unique name.
      <li><p>The name of a branch can be changed by adding special tags
         to the first check-in of a branch.  The name assigned by this
         special tag automatically propagates to all direct children.
      </ul>
 </ul>

<h5>V. Why version control is important (reprise)</h5>

 <ol>
 <li><p>Every check-in and every individual file has a unique name - its
     SHA1 or SHA3-256 hash.  Team members can unambiguously identify
     any specific
     version of the overall project or any specific version of an
     individual file.
 <li><p>Any historical version of the whole project or of any individual
     file can be easily recreated at any time and by any team member.
 <li><p>Accidental changes to files can be detected by recomputing their
     cryptographic hash.
 <li><p>Files of unknown origin can be identified using their hash.
 <li><p>Developers are able to work in parallel, review each others work,
     and easily merge their changes together.  External revisions to
     the baseline can be easily incorporated into the latest changes.
 <li><p>Developers can follow experimental lines of development,  then
     revert back to an earlier stable version if the experiment does
     not work out.  Creativity is enhanced by allowing crazy ideas to
     be investigated without destabilizing the project.
 <li><p>Developers can work on several independent subprojects, flipping
     back and forth from one subproject to another at will, and merge
     patches together or back into the main line of development as they
     mature.
 <li><p>Older changes can be easily backed out of recent revisions, for
     example if bugs are found long after the code was committed.
 <li><p>Enhancements in a branch can be easily copied into other branches,
     or into the trunk.
 <li><p>The complete history of all changes is plainly visible to
     all team members.  Project leaders can easily keep track of what
     all team members are doing.  Check-in comments help everyone to
     understand and/or remember the reason for each change.
 <li><p>New team members can be brought up-to-date with all of the historical
     code, quickly and easily.
 <li><p>New developers, interns, or inexperienced staff members who still
     do not understand all the details of the project or who are otherwise
     prone to making mistakes can be assigned significant subprojects to
     be carried out in branches without risking main line stability.
 <li><p>Code is automatically synchronized across all machines.  No human
     effort is wasted copying files from machine to machine.  The risk
     of human errors during file transfer and backup is eliminated.
 <li><p>A hardware failure results in minimal lost work because
     all previously committed changes will have been automatically
     replicated on other machines.
 <li><p>The complete work history of the project is conveniently archived
     in a single file, simplifying long-term record keeping.
 <li><p>A precise historical record is maintained which can be used to
     support copyright and patent claims or regulatory compliance.
 </ol>
</ol>
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<h1>Wiki In [./index.wiki  | Fossil]</h1>
<title>Wiki In Fossil</title>
<h2>Introduction</h2>

Fossil uses [/wiki_rules | wiki markup] for many things:
Fossil uses [/wiki_rules | Fossil wiki markup] and/or
[/md_rules | Markdown markup] for many things:

   *  Stand-alone wiki pages.
   *  Description and comments in [./bugtheory.wiki | bug reports].
   *  Check-in comments.
   *  Check-in comments.  (For historical reasons, these must
      currently be in fossil-wiki text format.)
   *  [./embeddeddoc.wiki | Embedded documentation] files whose
      name ends in "wiki".
      name ends in ".wiki" or ".md" or ".markdown".
   *  [./event.wiki | Technical notes].
   *  [./forum.wiki | Forum messages].
   *  Auxiliary notes on check-ins and branches.

The [/wiki_rules | formatting rules] for fossil wiki
The [/wiki_rules | formatting rules for fossil wiki]
are designed to be simple and intuitive.  The idea is that wiki provides
paragraph breaks, numbered and bulletted lists, and hyperlinking for
paragraph breaks, numbered and bulleted lists, and hyperlinking for
simple documents together with a safe subset of HTML for more complex
formatting tasks.

Some commentators feel that the use of HTML is a mistake and that
fossil should use the markup language of the
<i>fill-in-your-favorite</i> wiki engine instead.  That approach
was considered but was rejected for the following reasons:

The [/md_rules | Markdown formatting rules] are more complex, but
  1.  There is no standard wiki markup language.  Every wiki engine does
      it a little differently.

are also more widely known, and are thus provided as an alternative.
  2.  The wiki markup used by fossil, though limited, is common to most
      other wiki engines, is intuitive, and is sufficient for 90% of
      all formatting tasks.

  3.  Where the fossil wiki markup language is insufficient, HTML is
      used.  HTML is a standard language familiar to most programmers so
      there is nothing new to learn.  And, though cumbersome, the HTML
      does not need to be used very often so is not a burden.


<h2>Stand-alone Wiki Pages</h2>

Each wiki page has its own revision history which is independent of
the sequence of check-ins (check-ins).  Wiki pages can branch and merge
just like check-ins, though as of this writing (2008-07-29) there is
no mechanism in the user interface to support branching and merging.
The current implementation of the wiki shows the version of the wiki
page that has the most recent timestamp.
page that has the most recent time stamp.

In other words, if two users make unrelated changes to the same wiki
page on separate repositories and those repositories are synced,
the wiki page will fork.  The web interface will display whichever edit
was checked in last.  The other edit can be found in the history.  The
file format will support merging the branches back together, but there
is no mechanism in the user interface (yet) to perform the merge.

Every change to a wiki page is a separate 
Every change to a wiki page is a separate
[./fileformat.wiki | control artifact]
of type [./fileformat.wiki#wikichng | "Wiki Page"].

<h2>Embedded Documentation</h2>

Files in the source tree that use the ".wiki" suffix can be accessed
and displayed using special URLs to the fossil server.  This allows
project documentation to be stored in the source tree and accessed 
online.  (Details are descripted [./embeddeddoc.wiki | separately].)
Files in the source tree that use the ".wiki", ".md", or ".markdown" suffixes
can be accessed and displayed using special URLs to the fossil server.
This allows
project documentation to be stored in the source tree and accessed
online.  (Details are described [./embeddeddoc.wiki | separately].)

Some project prefer to store their documentation in wiki.  There is nothing
Some projects prefer to store their documentation in wiki.  There is nothing
wrong with that.  But other projects prefer to keep documentation as part
of the source tree, so that it is versioned along with the source tree and
so that only developers with check-in privileges can change it.  
so that only developers with check-in privileges can change it.
Embedded documentation serves this latter purpose.  Both forms of documentation
use the exact same wiki markup language.  Some projects may choose to
use the exact same markup.  Some projects may choose to
use both forms of documentation at the same time.  Because the same
format is used, it is trival to move file from wiki to embedded documentation
format is used, it is trivial to move a file from wiki to embedded documentation
or back again as the project evolves.

<h2>Bug-reports and check-in comments</h2>
<h2>Bug-reports and check-in comments and Forum messages</h2>

The comments on check-ins and the text in the descriptions of bug reports
both use wiki formatting.  Exactly the same set of formatting rules apply.
There is never a need to learn one formatting language for documentation
and a different markup for bugs or for check-in comments.
The comments on check-ins, forum posts, and the text in the
descriptions of bug reports both use wiki formatting.  Exactly the
same set of formatting rules apply.  There is never a need to learn
one formatting language for documentation and a different markup for
bugs or for check-in comments.

Minor caveat: check-in messages are currently limited to the
fossil-wiki format.

<h2 id="assocwiki">Auxiliary notes attached to check-ins or branches</h2>

Stand-alone wiki pages with special names "branch/<i>BRANCHNAME</i>"
or "checkin/<i>HASH</i>" are associated with the corresponding
branch or check-in.  The wiki text appears in an "About" section of
timelines and info screens.  Examples:

   *  [/timeline?r=graph-test-branch] shows the text of the
      [/wiki?name=branch/graph-test-branch&p|branch/graph-test-branch]
      wiki page at the top of the timeline
   *  [/info/19c60b7fc9e2] shows the text of the
      [/wiki?name=checkin/19c60b7fc9e2400e56a6f938bbad0e34ca746ca2eabdecac10945539f1f5e8c6&p|checkin/19c60b7fc9e2...]
      wiki page in the "About" section.

These special wiki pages are very useful for recording historical
notes.
Added www/wsl_caveats.wiki.
















































































































































































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<title>Caveats and Precautions for Fossil Usage with Windows Subsystem for Linux</title>

<h2>When These Issues Matter</h2>

The discussion following is relevant to those who:

  *  Are using the Windows Subsystem for Linux (aka "WSL");
  *  Create a Fossil checkout in a directory accessible from WSL and Windows;
  *  Use both Linux Fossil and Windows tools to modify files in a checkout;
  *  Desire to or must preserve execute permissions set for repository files;
  *  and Use Linux Fossil to commit changes made within the checkout.

Note that these criteria apply conjunctively; if any are not met,
then the consequences of the issues below are at worst annoying
and otherwise harmless or absent.

<h2>What Can Go Wrong (Why It Matters)</h2>

The most readily seen manifestation of the problem occurs when
"<tt>fossil status</tt>" or "<tt>fossil changes</tt>" is run,
using Linux Fossil from WSL after Windows tools (including
fossil.exe) have been used to modify files within a checkout.
Unless filter options block it, those subcommands will tag
some (and often many) checkout files with <b>EXECUTABLE</b>
or <b>NOEXEC</b>, indicating that the file's user execute permission
has been altered such that it differs from what is recorded
in the repository for that version of the file.

This "user execute permission" is referred to as "the X-bit"
hereafter, referring to either the recorded version state
or a checkout file attributes state.

This is merely annoying and distracting if the altered X-bit
will never be committed using Linux Fossil. It can be quite
distracting because those tags tend to mask the presence or
absence of other changes whose detection is the usual
reason for using Fossil's changes or status subcommands.

However, in the problematic usage scenario, those tags will
most often represent inadvertant toggling of the X-bit on the
affected file. The X-bit is kept in the repository for good
reason (usually), and arbitrary changes to it by means of a
commit when that change is not intended is virtually always
a bad result. (At best, the change causes useless churn; at
worst it frustrates the intended purpose of having an X-bit.)

<h2>Technical Discusion of the Problem</h2>

The genesis of altered X-bits, while not obvious at first glance,
involves obvious facts. The Windows OS does not deal with the
triple of user/group/other executable permissions the way that
Unix and similar operating systems do. Hence, tools which run
on Windows, including Fossil built for Windows, do not manage
the X-bit; it may not even exist yet for files which have not
had their permissions set by any Linux program running in WSL.
When such tools modify a file which has had its X-bit set (or
cleared) by a program in WSL, an existing X-bit value may not
be preserved depending upon how the modification is effected.

The WSL infrastructure (or virtual system) compensates for the
absence of an X-bit in Windows filesystems with two stratagems:
(1) Establishing a default for its value when no Linux program
has yet set it; and (2) stashing Linux "mode" bits in a "special"
place for each file once it has been subject to a chmod() call.
That default's default can be changed by way of /etc/wsl.conf
content. However, this default cannot be right for files which
are tracked in a Fossil repository as having the other value.
And Windows tools generally are not written to deal with "mode"
bits in that "special" place. (They are kept in a NTFS extended
file attribute named $LXMOD, not accessible through the WIN32
API; the OS layer below WIN32 must be used to get at them.)
Hence, inadvertant X-bit changes are unavoidable, or avoided
only by luck, in the general usage case noted above.

<h2>Problematic Usage Scenarios</h2>

<h3>A Simple Example</h3>

  *  Open a checkout in Windows (using fossil.exe) from a project
whose files have a mixture of executable and non-executable files.
Use a checkout directory visible when running under WSL.

  *  Navigate to the same directory in a Linux shell on WSL, then
run "fossil status".

  *  Depending upon /etc/wsl.conf content (or defaults in its absence),
the status ouput will tag checkout files as EXECUTABLE or NOEXEC.

<h3>Continuation of Simple Example</h3>

  *  In the same checkout as above "Simple Example", on WSL,
run "fossil revert" to correct all those errant X-bit values.

  *  Run "fossil status" again in WSL to verify absence of toggled X-bits.

  *  Run "ls -l" from WSL to find two files, one with its X-bit set
and the other with it clear.

  *  From Windows, perform these steps on each of those files:<br>
&nbsp;&nbsp;(1) read the_file content into a buffer<br>
&nbsp;&nbsp;(2) rename the_file the_file.bak<br>
&nbsp;&nbsp;(3) write buffer content to new file, the_file<br>
&nbsp;&nbsp;(4) del the_file.bak (or leave it)<br>
&nbsp;&nbsp;(Note that this sequence is similar to what many editors do when
a user modifies a file then uses undo to reverse the changes.)

  *  Run "fossil status" again in WSL and observe that one of the
two files has had its X-bit toggled.

<h3>A Fossil-Only Example</h3>

  *  In the another (different) checkout of the same version,
somehow cause "legitimate" X-bit toggles of two files whose
X-bits differ. (This "somehow" probably will involve WSL to
toggle file bits and fossil on WSL to commit the toggles.)

  *  In the Simple Example checkout, use fossil.exe on Windows
to update the checkout, ostensibly bringing the X-bit toggles
into the affected checkout files.

  *  In the Simple Example checkout, use fossil on WSL to run
"fossil status", and observe at least one X-bit discrepancy.

<h2>Recommended Workflow</h2>

There are two simple approaches for dealing with this issue when
one wishes to continue using the same checkout directory from
Windows and WSL. Either one is effective. These are:

  *  Do not use fossil on WSL for any operations which will modify
the repository. Instead, block those operations in some manner.

  *  Do not use any tools on Windows, (including certain subcommands
of fossil.exe,) which may modify the X-bits on files within the
shared checkout, instead restricting use of Windows tools to those
which are known to only (and actually) modify file content in place
while preserving X-bit values. (The "actually" proviso emphasizes
that tools which only simulate in-place file modification, but do
so via create combined with delete and rename, are to be avoided.
A simulation which works flawlessly on Windows may not preserve
the WSL X-bit.)

There are more complex ways to deal with this issue, involving
use of fossil on WSL to fix (or revert) toggled X-bits prior
to any commit, together with actions needed to preserve all
intended changes to the checkout as fossil revert is done.
Such methods are overly clever or fragile for elaboration here.

Another way to deal with this issue is to correct any toggled
X-bits within a checkout before using "fossil commit" on WSL
by means other than "fossil revert".

<h2>Corrective Measures or Mitigation</h2>

It is possible, by either manual or automated means, to perform
a pre-commit check and/or correction for mis-toggled X-bits.

The X-bit states are available from the repository for whatever
versions it has stored. And several Linux tools are able to read
or alter the X-bit state of files. With these components, a tool
can be readily built to aid avoidance of a commit (via fossil on
WSL) that would record mis-toggled X-bits into the repository.

Fossil itself on WSL will detect mis-toggled X-bits for files
which have not been otherise modified, but altered file content
masks such detection, and it is just such modification that is
among the problematic scenarios. So Fossil alone cannot yet
reliably do the detection or correction needed to avoid or
remedy the mis-toggled X-bit commit problem.

It is also feasible to detect or correct the mis-toggled X-bit
problem within Windows with a special-purpose tool which can
read, create or modify the X-bits stored by WSL for any file
which has been subject to the Linux chmod(...) system call.

Creation of these tools is beyond the scope of this document.
Added www/xkcd-git.gif.

cannot compute difference between binary files